diff options
Diffstat (limited to 'drivers/net/ethernet/pensando/ionic')
25 files changed, 14456 insertions, 0 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/Makefile b/drivers/net/ethernet/pensando/ionic/Makefile new file mode 100644 index 000000000..4e7642a2d --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/Makefile @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 +# Copyright(c) 2017 - 2019 Pensando Systems, Inc + +obj-$(CONFIG_IONIC) := ionic.o + +ionic-y := ionic_main.o ionic_bus_pci.o ionic_devlink.o ionic_dev.o \ + ionic_debugfs.o ionic_lif.o ionic_rx_filter.o ionic_ethtool.o \ + ionic_txrx.o ionic_stats.o ionic_fw.o +ionic-$(CONFIG_PTP_1588_CLOCK) += ionic_phc.o diff --git a/drivers/net/ethernet/pensando/ionic/ionic.h b/drivers/net/ethernet/pensando/ionic/ionic.h new file mode 100644 index 000000000..602f4d45d --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic.h @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_H_ +#define _IONIC_H_ + +struct ionic_lif; + +#include "ionic_if.h" +#include "ionic_dev.h" +#include "ionic_devlink.h" + +#define IONIC_DRV_NAME "ionic" +#define IONIC_DRV_DESCRIPTION "Pensando Ethernet NIC Driver" + +#define PCI_VENDOR_ID_PENSANDO 0x1dd8 + +#define PCI_DEVICE_ID_PENSANDO_IONIC_ETH_PF 0x1002 +#define PCI_DEVICE_ID_PENSANDO_IONIC_ETH_VF 0x1003 + +#define DEVCMD_TIMEOUT 5 +#define IONIC_ADMINQ_TIME_SLICE msecs_to_jiffies(100) + +#define IONIC_PHC_UPDATE_NS 10000000000 /* 10s in nanoseconds */ +#define NORMAL_PPB 1000000000 /* one billion parts per billion */ +#define SCALED_PPM (1000000ull << 16) /* 2^16 million parts per 2^16 million */ + +struct ionic_vf { + u16 index; + u8 macaddr[6]; + __le32 maxrate; + __le16 vlanid; + u8 spoofchk; + u8 trusted; + u8 linkstate; + dma_addr_t stats_pa; + struct ionic_lif_stats stats; +}; + +struct ionic { + struct pci_dev *pdev; + struct device *dev; + struct devlink_port dl_port; + struct ionic_dev idev; + struct mutex dev_cmd_lock; /* lock for dev_cmd operations */ + struct dentry *dentry; + struct ionic_dev_bar bars[IONIC_BARS_MAX]; + unsigned int num_bars; + struct ionic_identity ident; + struct ionic_lif *lif; + unsigned int nnqs_per_lif; + unsigned int neqs_per_lif; + unsigned int ntxqs_per_lif; + unsigned int nrxqs_per_lif; + unsigned int nintrs; + DECLARE_BITMAP(intrs, IONIC_INTR_CTRL_REGS_MAX); + struct work_struct nb_work; + struct notifier_block nb; + struct rw_semaphore vf_op_lock; /* lock for VF operations */ + struct ionic_vf *vfs; + int num_vfs; + struct timer_list watchdog_timer; + int watchdog_period; +}; + +struct ionic_admin_ctx { + struct completion work; + union ionic_adminq_cmd cmd; + union ionic_adminq_comp comp; +}; + +int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx); +int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx, + const int err, const bool do_msg); +int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx); +int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx); +void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode, + u8 status, int err); + +int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_wait); +int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_wait); +void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status, + int err); +int ionic_set_dma_mask(struct ionic *ionic); +int ionic_setup(struct ionic *ionic); + +int ionic_identify(struct ionic *ionic); +int ionic_init(struct ionic *ionic); +int ionic_reset(struct ionic *ionic); + +int ionic_port_identify(struct ionic *ionic); +int ionic_port_init(struct ionic *ionic); +int ionic_port_reset(struct ionic *ionic); + +const char *ionic_vf_attr_to_str(enum ionic_vf_attr attr); + +#endif /* _IONIC_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus.h b/drivers/net/ethernet/pensando/ionic/ionic_bus.h new file mode 100644 index 000000000..2f4d08c64 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_bus.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_BUS_H_ +#define _IONIC_BUS_H_ + +int ionic_bus_get_irq(struct ionic *ionic, unsigned int num); +const char *ionic_bus_info(struct ionic *ionic); +int ionic_bus_alloc_irq_vectors(struct ionic *ionic, unsigned int nintrs); +void ionic_bus_free_irq_vectors(struct ionic *ionic); +int ionic_bus_register_driver(void); +void ionic_bus_unregister_driver(void); +void __iomem *ionic_bus_map_dbpage(struct ionic *ionic, int page_num); +void ionic_bus_unmap_dbpage(struct ionic *ionic, void __iomem *page); + +#endif /* _IONIC_BUS_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c new file mode 100644 index 000000000..ce436e973 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c @@ -0,0 +1,418 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/pci.h> + +#include "ionic.h" +#include "ionic_bus.h" +#include "ionic_lif.h" +#include "ionic_debugfs.h" + +/* Supported devices */ +static const struct pci_device_id ionic_id_table[] = { + { PCI_VDEVICE(PENSANDO, PCI_DEVICE_ID_PENSANDO_IONIC_ETH_PF) }, + { PCI_VDEVICE(PENSANDO, PCI_DEVICE_ID_PENSANDO_IONIC_ETH_VF) }, + { 0, } /* end of table */ +}; +MODULE_DEVICE_TABLE(pci, ionic_id_table); + +int ionic_bus_get_irq(struct ionic *ionic, unsigned int num) +{ + return pci_irq_vector(ionic->pdev, num); +} + +const char *ionic_bus_info(struct ionic *ionic) +{ + return pci_name(ionic->pdev); +} + +int ionic_bus_alloc_irq_vectors(struct ionic *ionic, unsigned int nintrs) +{ + return pci_alloc_irq_vectors(ionic->pdev, nintrs, nintrs, + PCI_IRQ_MSIX); +} + +void ionic_bus_free_irq_vectors(struct ionic *ionic) +{ + if (!ionic->nintrs) + return; + + pci_free_irq_vectors(ionic->pdev); +} + +static int ionic_map_bars(struct ionic *ionic) +{ + struct pci_dev *pdev = ionic->pdev; + struct device *dev = ionic->dev; + struct ionic_dev_bar *bars; + unsigned int i, j; + + bars = ionic->bars; + ionic->num_bars = 0; + + for (i = 0, j = 0; i < IONIC_BARS_MAX; i++) { + if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM)) + continue; + bars[j].len = pci_resource_len(pdev, i); + + /* only map the whole bar 0 */ + if (j > 0) { + bars[j].vaddr = NULL; + } else { + bars[j].vaddr = pci_iomap(pdev, i, bars[j].len); + if (!bars[j].vaddr) { + dev_err(dev, + "Cannot memory-map BAR %d, aborting\n", + i); + return -ENODEV; + } + } + + bars[j].bus_addr = pci_resource_start(pdev, i); + bars[j].res_index = i; + ionic->num_bars++; + j++; + } + + return 0; +} + +static void ionic_unmap_bars(struct ionic *ionic) +{ + struct ionic_dev_bar *bars = ionic->bars; + unsigned int i; + + for (i = 0; i < IONIC_BARS_MAX; i++) { + if (bars[i].vaddr) { + iounmap(bars[i].vaddr); + bars[i].bus_addr = 0; + bars[i].vaddr = NULL; + bars[i].len = 0; + } + } +} + +void __iomem *ionic_bus_map_dbpage(struct ionic *ionic, int page_num) +{ + return pci_iomap_range(ionic->pdev, + ionic->bars[IONIC_PCI_BAR_DBELL].res_index, + (u64)page_num << PAGE_SHIFT, PAGE_SIZE); +} + +void ionic_bus_unmap_dbpage(struct ionic *ionic, void __iomem *page) +{ + iounmap(page); +} + +static void ionic_vf_dealloc_locked(struct ionic *ionic) +{ + struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_STATSADDR }; + struct ionic_vf *v; + int i; + + if (!ionic->vfs) + return; + + for (i = ionic->num_vfs - 1; i >= 0; i--) { + v = &ionic->vfs[i]; + + if (v->stats_pa) { + vfc.stats_pa = 0; + (void)ionic_set_vf_config(ionic, i, &vfc); + dma_unmap_single(ionic->dev, v->stats_pa, + sizeof(v->stats), DMA_FROM_DEVICE); + v->stats_pa = 0; + } + } + + kfree(ionic->vfs); + ionic->vfs = NULL; + ionic->num_vfs = 0; +} + +static void ionic_vf_dealloc(struct ionic *ionic) +{ + down_write(&ionic->vf_op_lock); + ionic_vf_dealloc_locked(ionic); + up_write(&ionic->vf_op_lock); +} + +static int ionic_vf_alloc(struct ionic *ionic, int num_vfs) +{ + struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_STATSADDR }; + struct ionic_vf *v; + int err = 0; + int i; + + down_write(&ionic->vf_op_lock); + + ionic->vfs = kcalloc(num_vfs, sizeof(struct ionic_vf), GFP_KERNEL); + if (!ionic->vfs) { + err = -ENOMEM; + goto out; + } + + for (i = 0; i < num_vfs; i++) { + v = &ionic->vfs[i]; + v->stats_pa = dma_map_single(ionic->dev, &v->stats, + sizeof(v->stats), DMA_FROM_DEVICE); + if (dma_mapping_error(ionic->dev, v->stats_pa)) { + v->stats_pa = 0; + err = -ENODEV; + goto out; + } + + ionic->num_vfs++; + + /* ignore failures from older FW, we just won't get stats */ + vfc.stats_pa = cpu_to_le64(v->stats_pa); + (void)ionic_set_vf_config(ionic, i, &vfc); + } + +out: + if (err) + ionic_vf_dealloc_locked(ionic); + up_write(&ionic->vf_op_lock); + return err; +} + +static int ionic_sriov_configure(struct pci_dev *pdev, int num_vfs) +{ + struct ionic *ionic = pci_get_drvdata(pdev); + struct device *dev = ionic->dev; + int ret = 0; + + if (ionic->lif && + test_bit(IONIC_LIF_F_FW_RESET, ionic->lif->state)) + return -EBUSY; + + if (num_vfs > 0) { + ret = pci_enable_sriov(pdev, num_vfs); + if (ret) { + dev_err(dev, "Cannot enable SRIOV: %d\n", ret); + goto out; + } + + ret = ionic_vf_alloc(ionic, num_vfs); + if (ret) { + dev_err(dev, "Cannot alloc VFs: %d\n", ret); + pci_disable_sriov(pdev); + goto out; + } + + ret = num_vfs; + } else { + pci_disable_sriov(pdev); + ionic_vf_dealloc(ionic); + } + +out: + return ret; +} + +static int ionic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct device *dev = &pdev->dev; + struct ionic *ionic; + int num_vfs; + int err; + + ionic = ionic_devlink_alloc(dev); + if (!ionic) + return -ENOMEM; + + ionic->pdev = pdev; + ionic->dev = dev; + pci_set_drvdata(pdev, ionic); + mutex_init(&ionic->dev_cmd_lock); + + /* Query system for DMA addressing limitation for the device. */ + err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(IONIC_ADDR_LEN)); + if (err) { + dev_err(dev, "Unable to obtain 64-bit DMA for consistent allocations, aborting. err=%d\n", + err); + goto err_out_clear_drvdata; + } + + ionic_debugfs_add_dev(ionic); + + /* Setup PCI device */ + err = pci_enable_device_mem(pdev); + if (err) { + dev_err(dev, "Cannot enable PCI device: %d, aborting\n", err); + goto err_out_debugfs_del_dev; + } + + err = pci_request_regions(pdev, IONIC_DRV_NAME); + if (err) { + dev_err(dev, "Cannot request PCI regions: %d, aborting\n", err); + goto err_out_pci_disable_device; + } + + pcie_print_link_status(pdev); + + err = ionic_map_bars(ionic); + if (err) + goto err_out_pci_release_regions; + + /* Configure the device */ + err = ionic_setup(ionic); + if (err) { + dev_err(dev, "Cannot setup device: %d, aborting\n", err); + goto err_out_unmap_bars; + } + pci_set_master(pdev); + + err = ionic_identify(ionic); + if (err) { + dev_err(dev, "Cannot identify device: %d, aborting\n", err); + goto err_out_teardown; + } + ionic_debugfs_add_ident(ionic); + + err = ionic_init(ionic); + if (err) { + dev_err(dev, "Cannot init device: %d, aborting\n", err); + goto err_out_teardown; + } + + /* Configure the ports */ + err = ionic_port_identify(ionic); + if (err) { + dev_err(dev, "Cannot identify port: %d, aborting\n", err); + goto err_out_reset; + } + + err = ionic_port_init(ionic); + if (err) { + dev_err(dev, "Cannot init port: %d, aborting\n", err); + goto err_out_reset; + } + + /* Allocate and init the LIF */ + err = ionic_lif_size(ionic); + if (err) { + dev_err(dev, "Cannot size LIF: %d, aborting\n", err); + goto err_out_port_reset; + } + + err = ionic_lif_alloc(ionic); + if (err) { + dev_err(dev, "Cannot allocate LIF: %d, aborting\n", err); + goto err_out_free_irqs; + } + + err = ionic_lif_init(ionic->lif); + if (err) { + dev_err(dev, "Cannot init LIF: %d, aborting\n", err); + goto err_out_free_lifs; + } + + init_rwsem(&ionic->vf_op_lock); + num_vfs = pci_num_vf(pdev); + if (num_vfs) { + dev_info(dev, "%d VFs found already enabled\n", num_vfs); + err = ionic_vf_alloc(ionic, num_vfs); + if (err) + dev_err(dev, "Cannot enable existing VFs: %d\n", err); + } + + err = ionic_devlink_register(ionic); + if (err) { + dev_err(dev, "Cannot register devlink: %d\n", err); + goto err_out_deinit_lifs; + } + + err = ionic_lif_register(ionic->lif); + if (err) { + dev_err(dev, "Cannot register LIF: %d, aborting\n", err); + goto err_out_deregister_devlink; + } + + mod_timer(&ionic->watchdog_timer, + round_jiffies(jiffies + ionic->watchdog_period)); + + return 0; + +err_out_deregister_devlink: + ionic_devlink_unregister(ionic); +err_out_deinit_lifs: + ionic_vf_dealloc(ionic); + ionic_lif_deinit(ionic->lif); +err_out_free_lifs: + ionic_lif_free(ionic->lif); + ionic->lif = NULL; +err_out_free_irqs: + ionic_bus_free_irq_vectors(ionic); +err_out_port_reset: + ionic_port_reset(ionic); +err_out_reset: + ionic_reset(ionic); +err_out_teardown: + pci_clear_master(pdev); + /* Don't fail the probe for these errors, keep + * the hw interface around for inspection + */ + return 0; + +err_out_unmap_bars: + ionic_unmap_bars(ionic); +err_out_pci_release_regions: + pci_release_regions(pdev); +err_out_pci_disable_device: + pci_disable_device(pdev); +err_out_debugfs_del_dev: + ionic_debugfs_del_dev(ionic); +err_out_clear_drvdata: + mutex_destroy(&ionic->dev_cmd_lock); + ionic_devlink_free(ionic); + + return err; +} + +static void ionic_remove(struct pci_dev *pdev) +{ + struct ionic *ionic = pci_get_drvdata(pdev); + + del_timer_sync(&ionic->watchdog_timer); + + if (ionic->lif) { + ionic_lif_unregister(ionic->lif); + ionic_devlink_unregister(ionic); + ionic_lif_deinit(ionic->lif); + ionic_lif_free(ionic->lif); + ionic->lif = NULL; + ionic_bus_free_irq_vectors(ionic); + } + + ionic_port_reset(ionic); + ionic_reset(ionic); + pci_clear_master(pdev); + ionic_unmap_bars(ionic); + pci_release_regions(pdev); + pci_disable_device(pdev); + ionic_debugfs_del_dev(ionic); + mutex_destroy(&ionic->dev_cmd_lock); + ionic_devlink_free(ionic); +} + +static struct pci_driver ionic_driver = { + .name = IONIC_DRV_NAME, + .id_table = ionic_id_table, + .probe = ionic_probe, + .remove = ionic_remove, + .sriov_configure = ionic_sriov_configure, +}; + +int ionic_bus_register_driver(void) +{ + return pci_register_driver(&ionic_driver); +} + +void ionic_bus_unregister_driver(void) +{ + pci_unregister_driver(&ionic_driver); +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c new file mode 100644 index 000000000..c58217027 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c @@ -0,0 +1,300 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/pci.h> +#include <linux/netdevice.h> + +#include "ionic.h" +#include "ionic_bus.h" +#include "ionic_lif.h" +#include "ionic_debugfs.h" + +#ifdef CONFIG_DEBUG_FS + +static struct dentry *ionic_dir; + +void ionic_debugfs_create(void) +{ + ionic_dir = debugfs_create_dir(IONIC_DRV_NAME, NULL); +} + +void ionic_debugfs_destroy(void) +{ + debugfs_remove_recursive(ionic_dir); +} + +void ionic_debugfs_add_dev(struct ionic *ionic) +{ + ionic->dentry = debugfs_create_dir(ionic_bus_info(ionic), ionic_dir); +} + +void ionic_debugfs_del_dev(struct ionic *ionic) +{ + debugfs_remove_recursive(ionic->dentry); + ionic->dentry = NULL; +} + +static int identity_show(struct seq_file *seq, void *v) +{ + struct ionic *ionic = seq->private; + struct ionic_identity *ident; + + ident = &ionic->ident; + + seq_printf(seq, "nlifs: %d\n", ident->dev.nlifs); + seq_printf(seq, "nintrs: %d\n", ident->dev.nintrs); + seq_printf(seq, "ndbpgs_per_lif: %d\n", ident->dev.ndbpgs_per_lif); + seq_printf(seq, "intr_coal_mult: %d\n", ident->dev.intr_coal_mult); + seq_printf(seq, "intr_coal_div: %d\n", ident->dev.intr_coal_div); + + seq_printf(seq, "max_ucast_filters: %d\n", ident->lif.eth.max_ucast_filters); + seq_printf(seq, "max_mcast_filters: %d\n", ident->lif.eth.max_mcast_filters); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(identity); + +void ionic_debugfs_add_ident(struct ionic *ionic) +{ + debugfs_create_file("identity", 0400, ionic->dentry, + ionic, &identity_fops); +} + +void ionic_debugfs_add_sizes(struct ionic *ionic) +{ + debugfs_create_u32("nlifs", 0400, ionic->dentry, + (u32 *)&ionic->ident.dev.nlifs); + debugfs_create_u32("nintrs", 0400, ionic->dentry, &ionic->nintrs); + + debugfs_create_u32("ntxqs_per_lif", 0400, ionic->dentry, + (u32 *)&ionic->ident.lif.eth.config.queue_count[IONIC_QTYPE_TXQ]); + debugfs_create_u32("nrxqs_per_lif", 0400, ionic->dentry, + (u32 *)&ionic->ident.lif.eth.config.queue_count[IONIC_QTYPE_RXQ]); +} + +static int q_tail_show(struct seq_file *seq, void *v) +{ + struct ionic_queue *q = seq->private; + + seq_printf(seq, "%d\n", q->tail_idx); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(q_tail); + +static int q_head_show(struct seq_file *seq, void *v) +{ + struct ionic_queue *q = seq->private; + + seq_printf(seq, "%d\n", q->head_idx); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(q_head); + +static int cq_tail_show(struct seq_file *seq, void *v) +{ + struct ionic_cq *cq = seq->private; + + seq_printf(seq, "%d\n", cq->tail_idx); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(cq_tail); + +static const struct debugfs_reg32 intr_ctrl_regs[] = { + { .name = "coal_init", .offset = 0, }, + { .name = "mask", .offset = 4, }, + { .name = "credits", .offset = 8, }, + { .name = "mask_on_assert", .offset = 12, }, + { .name = "coal_timer", .offset = 16, }, +}; + +void ionic_debugfs_add_qcq(struct ionic_lif *lif, struct ionic_qcq *qcq) +{ + struct dentry *qcq_dentry, *q_dentry, *cq_dentry; + struct dentry *intr_dentry, *stats_dentry; + struct ionic_dev *idev = &lif->ionic->idev; + struct debugfs_regset32 *intr_ctrl_regset; + struct ionic_intr_info *intr = &qcq->intr; + struct debugfs_blob_wrapper *desc_blob; + struct device *dev = lif->ionic->dev; + struct ionic_queue *q = &qcq->q; + struct ionic_cq *cq = &qcq->cq; + + qcq_dentry = debugfs_create_dir(q->name, lif->dentry); + if (IS_ERR_OR_NULL(qcq_dentry)) + return; + qcq->dentry = qcq_dentry; + + debugfs_create_x64("q_base_pa", 0400, qcq_dentry, &qcq->q_base_pa); + debugfs_create_x32("q_size", 0400, qcq_dentry, &qcq->q_size); + debugfs_create_x64("cq_base_pa", 0400, qcq_dentry, &qcq->cq_base_pa); + debugfs_create_x32("cq_size", 0400, qcq_dentry, &qcq->cq_size); + debugfs_create_x64("sg_base_pa", 0400, qcq_dentry, &qcq->sg_base_pa); + debugfs_create_x32("sg_size", 0400, qcq_dentry, &qcq->sg_size); + + q_dentry = debugfs_create_dir("q", qcq->dentry); + + debugfs_create_u32("index", 0400, q_dentry, &q->index); + debugfs_create_u32("num_descs", 0400, q_dentry, &q->num_descs); + debugfs_create_u32("desc_size", 0400, q_dentry, &q->desc_size); + debugfs_create_u32("pid", 0400, q_dentry, &q->pid); + debugfs_create_u32("qid", 0400, q_dentry, &q->hw_index); + debugfs_create_u32("qtype", 0400, q_dentry, &q->hw_type); + debugfs_create_u64("drop", 0400, q_dentry, &q->drop); + + debugfs_create_file("tail", 0400, q_dentry, q, &q_tail_fops); + debugfs_create_file("head", 0400, q_dentry, q, &q_head_fops); + + desc_blob = devm_kzalloc(dev, sizeof(*desc_blob), GFP_KERNEL); + if (!desc_blob) + return; + desc_blob->data = q->base; + desc_blob->size = (unsigned long)q->num_descs * q->desc_size; + debugfs_create_blob("desc_blob", 0400, q_dentry, desc_blob); + + if (qcq->flags & IONIC_QCQ_F_SG) { + desc_blob = devm_kzalloc(dev, sizeof(*desc_blob), GFP_KERNEL); + if (!desc_blob) + return; + desc_blob->data = q->sg_base; + desc_blob->size = (unsigned long)q->num_descs * q->sg_desc_size; + debugfs_create_blob("sg_desc_blob", 0400, q_dentry, + desc_blob); + } + + cq_dentry = debugfs_create_dir("cq", qcq->dentry); + + debugfs_create_x64("base_pa", 0400, cq_dentry, &cq->base_pa); + debugfs_create_u32("num_descs", 0400, cq_dentry, &cq->num_descs); + debugfs_create_u32("desc_size", 0400, cq_dentry, &cq->desc_size); + debugfs_create_bool("done_color", 0400, cq_dentry, &cq->done_color); + + debugfs_create_file("tail", 0400, cq_dentry, cq, &cq_tail_fops); + + desc_blob = devm_kzalloc(dev, sizeof(*desc_blob), GFP_KERNEL); + if (!desc_blob) + return; + desc_blob->data = cq->base; + desc_blob->size = (unsigned long)cq->num_descs * cq->desc_size; + debugfs_create_blob("desc_blob", 0400, cq_dentry, desc_blob); + + if (qcq->flags & IONIC_QCQ_F_INTR) { + intr_dentry = debugfs_create_dir("intr", qcq->dentry); + + debugfs_create_u32("index", 0400, intr_dentry, + &intr->index); + debugfs_create_u32("vector", 0400, intr_dentry, + &intr->vector); + debugfs_create_u32("dim_coal_hw", 0400, intr_dentry, + &intr->dim_coal_hw); + + intr_ctrl_regset = devm_kzalloc(dev, sizeof(*intr_ctrl_regset), + GFP_KERNEL); + if (!intr_ctrl_regset) + return; + intr_ctrl_regset->regs = intr_ctrl_regs; + intr_ctrl_regset->nregs = ARRAY_SIZE(intr_ctrl_regs); + intr_ctrl_regset->base = &idev->intr_ctrl[intr->index]; + + debugfs_create_regset32("intr_ctrl", 0400, intr_dentry, + intr_ctrl_regset); + } + + if (qcq->flags & IONIC_QCQ_F_NOTIFYQ) { + stats_dentry = debugfs_create_dir("notifyblock", qcq->dentry); + + debugfs_create_u64("eid", 0400, stats_dentry, + (u64 *)&lif->info->status.eid); + debugfs_create_u16("link_status", 0400, stats_dentry, + (u16 *)&lif->info->status.link_status); + debugfs_create_u32("link_speed", 0400, stats_dentry, + (u32 *)&lif->info->status.link_speed); + debugfs_create_u16("link_down_count", 0400, stats_dentry, + (u16 *)&lif->info->status.link_down_count); + } +} + +static int netdev_show(struct seq_file *seq, void *v) +{ + struct net_device *netdev = seq->private; + + seq_printf(seq, "%s\n", netdev->name); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(netdev); + +static int lif_filters_show(struct seq_file *seq, void *v) +{ + struct ionic_lif *lif = seq->private; + struct ionic_rx_filter *f; + struct hlist_head *head; + struct hlist_node *tmp; + unsigned int i; + + seq_puts(seq, "id flow state type filter\n"); + spin_lock_bh(&lif->rx_filters.lock); + for (i = 0; i < IONIC_RX_FILTER_HLISTS; i++) { + head = &lif->rx_filters.by_id[i]; + hlist_for_each_entry_safe(f, tmp, head, by_id) { + switch (le16_to_cpu(f->cmd.match)) { + case IONIC_RX_FILTER_MATCH_VLAN: + seq_printf(seq, "0x%04x 0x%08x 0x%02x vlan 0x%04x\n", + f->filter_id, f->flow_id, f->state, + le16_to_cpu(f->cmd.vlan.vlan)); + break; + case IONIC_RX_FILTER_MATCH_MAC: + seq_printf(seq, "0x%04x 0x%08x 0x%02x mac %pM\n", + f->filter_id, f->flow_id, f->state, + f->cmd.mac.addr); + break; + case IONIC_RX_FILTER_MATCH_MAC_VLAN: + seq_printf(seq, "0x%04x 0x%08x 0x%02x macvl 0x%04x %pM\n", + f->filter_id, f->flow_id, f->state, + le16_to_cpu(f->cmd.vlan.vlan), + f->cmd.mac.addr); + break; + case IONIC_RX_FILTER_STEER_PKTCLASS: + seq_printf(seq, "0x%04x 0x%08x 0x%02x rxstr 0x%llx\n", + f->filter_id, f->flow_id, f->state, + le64_to_cpu(f->cmd.pkt_class)); + break; + } + } + } + spin_unlock_bh(&lif->rx_filters.lock); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(lif_filters); + +void ionic_debugfs_add_lif(struct ionic_lif *lif) +{ + struct dentry *lif_dentry; + + lif_dentry = debugfs_create_dir(lif->name, lif->ionic->dentry); + if (IS_ERR_OR_NULL(lif_dentry)) + return; + lif->dentry = lif_dentry; + + debugfs_create_file("netdev", 0400, lif->dentry, + lif->netdev, &netdev_fops); + debugfs_create_file("filters", 0400, lif->dentry, + lif, &lif_filters_fops); +} + +void ionic_debugfs_del_lif(struct ionic_lif *lif) +{ + debugfs_remove_recursive(lif->dentry); + lif->dentry = NULL; +} + +void ionic_debugfs_del_qcq(struct ionic_qcq *qcq) +{ + debugfs_remove_recursive(qcq->dentry); + qcq->dentry = NULL; +} + +#endif diff --git a/drivers/net/ethernet/pensando/ionic/ionic_debugfs.h b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.h new file mode 100644 index 000000000..c44ebde17 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_DEBUGFS_H_ +#define _IONIC_DEBUGFS_H_ + +#include <linux/debugfs.h> + +#ifdef CONFIG_DEBUG_FS + +void ionic_debugfs_create(void); +void ionic_debugfs_destroy(void); +void ionic_debugfs_add_dev(struct ionic *ionic); +void ionic_debugfs_del_dev(struct ionic *ionic); +void ionic_debugfs_add_ident(struct ionic *ionic); +void ionic_debugfs_add_sizes(struct ionic *ionic); +void ionic_debugfs_add_lif(struct ionic_lif *lif); +void ionic_debugfs_add_qcq(struct ionic_lif *lif, struct ionic_qcq *qcq); +void ionic_debugfs_del_lif(struct ionic_lif *lif); +void ionic_debugfs_del_qcq(struct ionic_qcq *qcq); +#else +static inline void ionic_debugfs_create(void) { } +static inline void ionic_debugfs_destroy(void) { } +static inline void ionic_debugfs_add_dev(struct ionic *ionic) { } +static inline void ionic_debugfs_del_dev(struct ionic *ionic) { } +static inline void ionic_debugfs_add_ident(struct ionic *ionic) { } +static inline void ionic_debugfs_add_sizes(struct ionic *ionic) { } +static inline void ionic_debugfs_add_lif(struct ionic_lif *lif) { } +static inline void ionic_debugfs_add_qcq(struct ionic_lif *lif, struct ionic_qcq *qcq) { } +static inline void ionic_debugfs_del_lif(struct ionic_lif *lif) { } +static inline void ionic_debugfs_del_qcq(struct ionic_qcq *qcq) { } +#endif + +#endif /* _IONIC_DEBUGFS_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c new file mode 100644 index 000000000..344a39246 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c @@ -0,0 +1,752 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/etherdevice.h> +#include "ionic.h" +#include "ionic_dev.h" +#include "ionic_lif.h" + +static void ionic_watchdog_cb(struct timer_list *t) +{ + struct ionic *ionic = from_timer(ionic, t, watchdog_timer); + struct ionic_lif *lif = ionic->lif; + struct ionic_deferred_work *work; + int hb; + + mod_timer(&ionic->watchdog_timer, + round_jiffies(jiffies + ionic->watchdog_period)); + + if (!lif) + return; + + hb = ionic_heartbeat_check(ionic); + dev_dbg(ionic->dev, "%s: hb %d running %d UP %d\n", + __func__, hb, netif_running(lif->netdev), + test_bit(IONIC_LIF_F_UP, lif->state)); + + if (hb >= 0 && + !test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + ionic_link_status_check_request(lif, CAN_NOT_SLEEP); + + if (test_bit(IONIC_LIF_F_FILTER_SYNC_NEEDED, lif->state) && + !test_bit(IONIC_LIF_F_FW_RESET, lif->state)) { + work = kzalloc(sizeof(*work), GFP_ATOMIC); + if (!work) { + netdev_err(lif->netdev, "rxmode change dropped\n"); + return; + } + + work->type = IONIC_DW_TYPE_RX_MODE; + netdev_dbg(lif->netdev, "deferred: rx_mode\n"); + ionic_lif_deferred_enqueue(&lif->deferred, work); + } +} + +static void ionic_watchdog_init(struct ionic *ionic) +{ + struct ionic_dev *idev = &ionic->idev; + + timer_setup(&ionic->watchdog_timer, ionic_watchdog_cb, 0); + ionic->watchdog_period = IONIC_WATCHDOG_SECS * HZ; + + /* set times to ensure the first check will proceed */ + atomic_long_set(&idev->last_check_time, jiffies - 2 * HZ); + idev->last_hb_time = jiffies - 2 * ionic->watchdog_period; + /* init as ready, so no transition if the first check succeeds */ + idev->last_fw_hb = 0; + idev->fw_hb_ready = true; + idev->fw_status_ready = true; + idev->fw_generation = IONIC_FW_STS_F_GENERATION & + ioread8(&idev->dev_info_regs->fw_status); +} + +void ionic_init_devinfo(struct ionic *ionic) +{ + struct ionic_dev *idev = &ionic->idev; + + idev->dev_info.asic_type = ioread8(&idev->dev_info_regs->asic_type); + idev->dev_info.asic_rev = ioread8(&idev->dev_info_regs->asic_rev); + + memcpy_fromio(idev->dev_info.fw_version, + idev->dev_info_regs->fw_version, + IONIC_DEVINFO_FWVERS_BUFLEN); + + memcpy_fromio(idev->dev_info.serial_num, + idev->dev_info_regs->serial_num, + IONIC_DEVINFO_SERIAL_BUFLEN); + + idev->dev_info.fw_version[IONIC_DEVINFO_FWVERS_BUFLEN] = 0; + idev->dev_info.serial_num[IONIC_DEVINFO_SERIAL_BUFLEN] = 0; + + dev_dbg(ionic->dev, "fw_version %s\n", idev->dev_info.fw_version); +} + +int ionic_dev_setup(struct ionic *ionic) +{ + struct ionic_dev_bar *bar = ionic->bars; + unsigned int num_bars = ionic->num_bars; + struct ionic_dev *idev = &ionic->idev; + struct device *dev = ionic->dev; + u32 sig; + + /* BAR0: dev_cmd and interrupts */ + if (num_bars < 1) { + dev_err(dev, "No bars found, aborting\n"); + return -EFAULT; + } + + if (bar->len < IONIC_BAR0_SIZE) { + dev_err(dev, "Resource bar size %lu too small, aborting\n", + bar->len); + return -EFAULT; + } + + idev->dev_info_regs = bar->vaddr + IONIC_BAR0_DEV_INFO_REGS_OFFSET; + idev->dev_cmd_regs = bar->vaddr + IONIC_BAR0_DEV_CMD_REGS_OFFSET; + idev->intr_status = bar->vaddr + IONIC_BAR0_INTR_STATUS_OFFSET; + idev->intr_ctrl = bar->vaddr + IONIC_BAR0_INTR_CTRL_OFFSET; + + idev->hwstamp_regs = &idev->dev_info_regs->hwstamp; + + sig = ioread32(&idev->dev_info_regs->signature); + if (sig != IONIC_DEV_INFO_SIGNATURE) { + dev_err(dev, "Incompatible firmware signature %x", sig); + return -EFAULT; + } + + ionic_init_devinfo(ionic); + + /* BAR1: doorbells */ + bar++; + if (num_bars < 2) { + dev_err(dev, "Doorbell bar missing, aborting\n"); + return -EFAULT; + } + + ionic_watchdog_init(ionic); + + idev->db_pages = bar->vaddr; + idev->phy_db_pages = bar->bus_addr; + + return 0; +} + +/* Devcmd Interface */ +bool ionic_is_fw_running(struct ionic_dev *idev) +{ + u8 fw_status = ioread8(&idev->dev_info_regs->fw_status); + + /* firmware is useful only if the running bit is set and + * fw_status != 0xff (bad PCI read) + */ + return (fw_status != 0xff) && (fw_status & IONIC_FW_STS_F_RUNNING); +} + +int ionic_heartbeat_check(struct ionic *ionic) +{ + unsigned long check_time, last_check_time; + struct ionic_dev *idev = &ionic->idev; + struct ionic_lif *lif = ionic->lif; + bool fw_status_ready = true; + bool fw_hb_ready; + u8 fw_generation; + u8 fw_status; + u32 fw_hb; + + /* wait a least one second before testing again */ + check_time = jiffies; + last_check_time = atomic_long_read(&idev->last_check_time); +do_check_time: + if (time_before(check_time, last_check_time + HZ)) + return 0; + if (!atomic_long_try_cmpxchg_relaxed(&idev->last_check_time, + &last_check_time, check_time)) { + /* if called concurrently, only the first should proceed. */ + dev_dbg(ionic->dev, "%s: do_check_time again\n", __func__); + goto do_check_time; + } + + fw_status = ioread8(&idev->dev_info_regs->fw_status); + + /* If fw_status is not ready don't bother with the generation */ + if (!ionic_is_fw_running(idev)) { + fw_status_ready = false; + } else { + fw_generation = fw_status & IONIC_FW_STS_F_GENERATION; + if (idev->fw_generation != fw_generation) { + dev_info(ionic->dev, "FW generation 0x%02x -> 0x%02x\n", + idev->fw_generation, fw_generation); + + idev->fw_generation = fw_generation; + + /* If the generation changed, the fw status is not + * ready so we need to trigger a fw-down cycle. After + * the down, the next watchdog will see the fw is up + * and the generation value stable, so will trigger + * the fw-up activity. + * + * If we had already moved to FW_RESET from a RESET event, + * it is possible that we never saw the fw_status go to 0, + * so we fake the current idev->fw_status_ready here to + * force the transition and get FW up again. + */ + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + idev->fw_status_ready = false; /* go to running */ + else + fw_status_ready = false; /* go to down */ + } + } + + dev_dbg(ionic->dev, "fw_status 0x%02x ready %d idev->ready %d last_hb 0x%x state 0x%02lx\n", + fw_status, fw_status_ready, idev->fw_status_ready, + idev->last_fw_hb, lif->state[0]); + + /* is this a transition? */ + if (fw_status_ready != idev->fw_status_ready && + !test_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { + bool trigger = false; + + idev->fw_status_ready = fw_status_ready; + + if (!fw_status_ready && + !test_bit(IONIC_LIF_F_FW_RESET, lif->state) && + !test_and_set_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { + dev_info(ionic->dev, "FW stopped 0x%02x\n", fw_status); + trigger = true; + + } else if (fw_status_ready && + test_bit(IONIC_LIF_F_FW_RESET, lif->state)) { + dev_info(ionic->dev, "FW running 0x%02x\n", fw_status); + trigger = true; + } + + if (trigger) { + struct ionic_deferred_work *work; + + work = kzalloc(sizeof(*work), GFP_ATOMIC); + if (work) { + work->type = IONIC_DW_TYPE_LIF_RESET; + work->fw_status = fw_status_ready; + ionic_lif_deferred_enqueue(&lif->deferred, work); + } + } + } + + if (!idev->fw_status_ready) + return -ENXIO; + + /* Because of some variability in the actual FW heartbeat, we + * wait longer than the DEVCMD_TIMEOUT before checking again. + */ + last_check_time = idev->last_hb_time; + if (time_before(check_time, last_check_time + DEVCMD_TIMEOUT * 2 * HZ)) + return 0; + + fw_hb = ioread32(&idev->dev_info_regs->fw_heartbeat); + fw_hb_ready = fw_hb != idev->last_fw_hb; + + /* early FW version had no heartbeat, so fake it */ + if (!fw_hb_ready && !fw_hb) + fw_hb_ready = true; + + dev_dbg(ionic->dev, "%s: fw_hb %u last_fw_hb %u ready %u\n", + __func__, fw_hb, idev->last_fw_hb, fw_hb_ready); + + idev->last_fw_hb = fw_hb; + + /* log a transition */ + if (fw_hb_ready != idev->fw_hb_ready) { + idev->fw_hb_ready = fw_hb_ready; + if (!fw_hb_ready) + dev_info(ionic->dev, "FW heartbeat stalled at %d\n", fw_hb); + else + dev_info(ionic->dev, "FW heartbeat restored at %d\n", fw_hb); + } + + if (!fw_hb_ready) + return -ENXIO; + + idev->last_hb_time = check_time; + + return 0; +} + +u8 ionic_dev_cmd_status(struct ionic_dev *idev) +{ + return ioread8(&idev->dev_cmd_regs->comp.comp.status); +} + +bool ionic_dev_cmd_done(struct ionic_dev *idev) +{ + return ioread32(&idev->dev_cmd_regs->done) & IONIC_DEV_CMD_DONE; +} + +void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp) +{ + memcpy_fromio(comp, &idev->dev_cmd_regs->comp, sizeof(*comp)); +} + +void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd) +{ + memcpy_toio(&idev->dev_cmd_regs->cmd, cmd, sizeof(*cmd)); + iowrite32(0, &idev->dev_cmd_regs->done); + iowrite32(1, &idev->dev_cmd_regs->doorbell); +} + +/* Device commands */ +void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver) +{ + union ionic_dev_cmd cmd = { + .identify.opcode = IONIC_CMD_IDENTIFY, + .identify.ver = ver, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_init(struct ionic_dev *idev) +{ + union ionic_dev_cmd cmd = { + .init.opcode = IONIC_CMD_INIT, + .init.type = 0, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_reset(struct ionic_dev *idev) +{ + union ionic_dev_cmd cmd = { + .reset.opcode = IONIC_CMD_RESET, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +/* Port commands */ +void ionic_dev_cmd_port_identify(struct ionic_dev *idev) +{ + union ionic_dev_cmd cmd = { + .port_init.opcode = IONIC_CMD_PORT_IDENTIFY, + .port_init.index = 0, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_port_init(struct ionic_dev *idev) +{ + union ionic_dev_cmd cmd = { + .port_init.opcode = IONIC_CMD_PORT_INIT, + .port_init.index = 0, + .port_init.info_pa = cpu_to_le64(idev->port_info_pa), + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_port_reset(struct ionic_dev *idev) +{ + union ionic_dev_cmd cmd = { + .port_reset.opcode = IONIC_CMD_PORT_RESET, + .port_reset.index = 0, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state) +{ + union ionic_dev_cmd cmd = { + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR, + .port_setattr.index = 0, + .port_setattr.attr = IONIC_PORT_ATTR_STATE, + .port_setattr.state = state, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed) +{ + union ionic_dev_cmd cmd = { + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR, + .port_setattr.index = 0, + .port_setattr.attr = IONIC_PORT_ATTR_SPEED, + .port_setattr.speed = cpu_to_le32(speed), + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable) +{ + union ionic_dev_cmd cmd = { + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR, + .port_setattr.index = 0, + .port_setattr.attr = IONIC_PORT_ATTR_AUTONEG, + .port_setattr.an_enable = an_enable, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type) +{ + union ionic_dev_cmd cmd = { + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR, + .port_setattr.index = 0, + .port_setattr.attr = IONIC_PORT_ATTR_FEC, + .port_setattr.fec_type = fec_type, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type) +{ + union ionic_dev_cmd cmd = { + .port_setattr.opcode = IONIC_CMD_PORT_SETATTR, + .port_setattr.index = 0, + .port_setattr.attr = IONIC_PORT_ATTR_PAUSE, + .port_setattr.pause_type = pause_type, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +/* VF commands */ +int ionic_set_vf_config(struct ionic *ionic, int vf, + struct ionic_vf_setattr_cmd *vfc) +{ + union ionic_dev_cmd cmd = { + .vf_setattr.opcode = IONIC_CMD_VF_SETATTR, + .vf_setattr.attr = vfc->attr, + .vf_setattr.vf_index = cpu_to_le16(vf), + }; + int err; + + memcpy(cmd.vf_setattr.pad, vfc->pad, sizeof(vfc->pad)); + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_go(&ionic->idev, &cmd); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + + return err; +} + +int ionic_dev_cmd_vf_getattr(struct ionic *ionic, int vf, u8 attr, + struct ionic_vf_getattr_comp *comp) +{ + union ionic_dev_cmd cmd = { + .vf_getattr.opcode = IONIC_CMD_VF_GETATTR, + .vf_getattr.attr = attr, + .vf_getattr.vf_index = cpu_to_le16(vf), + }; + int err; + + if (vf >= ionic->num_vfs) + return -EINVAL; + + switch (attr) { + case IONIC_VF_ATTR_SPOOFCHK: + case IONIC_VF_ATTR_TRUST: + case IONIC_VF_ATTR_LINKSTATE: + case IONIC_VF_ATTR_MAC: + case IONIC_VF_ATTR_VLAN: + case IONIC_VF_ATTR_RATE: + break; + case IONIC_VF_ATTR_STATSADDR: + default: + return -EINVAL; + } + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_go(&ionic->idev, &cmd); + err = ionic_dev_cmd_wait_nomsg(ionic, DEVCMD_TIMEOUT); + memcpy_fromio(comp, &ionic->idev.dev_cmd_regs->comp.vf_getattr, + sizeof(*comp)); + mutex_unlock(&ionic->dev_cmd_lock); + + if (err && comp->status != IONIC_RC_ENOSUPP) + ionic_dev_cmd_dev_err_print(ionic, cmd.vf_getattr.opcode, + comp->status, err); + + return err; +} + +/* LIF commands */ +void ionic_dev_cmd_queue_identify(struct ionic_dev *idev, + u16 lif_type, u8 qtype, u8 qver) +{ + union ionic_dev_cmd cmd = { + .q_identify.opcode = IONIC_CMD_Q_IDENTIFY, + .q_identify.lif_type = cpu_to_le16(lif_type), + .q_identify.type = qtype, + .q_identify.ver = qver, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver) +{ + union ionic_dev_cmd cmd = { + .lif_identify.opcode = IONIC_CMD_LIF_IDENTIFY, + .lif_identify.type = type, + .lif_identify.ver = ver, + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index, + dma_addr_t info_pa) +{ + union ionic_dev_cmd cmd = { + .lif_init.opcode = IONIC_CMD_LIF_INIT, + .lif_init.index = cpu_to_le16(lif_index), + .lif_init.info_pa = cpu_to_le64(info_pa), + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index) +{ + union ionic_dev_cmd cmd = { + .lif_init.opcode = IONIC_CMD_LIF_RESET, + .lif_init.index = cpu_to_le16(lif_index), + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq, + u16 lif_index, u16 intr_index) +{ + struct ionic_queue *q = &qcq->q; + struct ionic_cq *cq = &qcq->cq; + + union ionic_dev_cmd cmd = { + .q_init.opcode = IONIC_CMD_Q_INIT, + .q_init.lif_index = cpu_to_le16(lif_index), + .q_init.type = q->type, + .q_init.ver = qcq->q.lif->qtype_info[q->type].version, + .q_init.index = cpu_to_le32(q->index), + .q_init.flags = cpu_to_le16(IONIC_QINIT_F_IRQ | + IONIC_QINIT_F_ENA), + .q_init.pid = cpu_to_le16(q->pid), + .q_init.intr_index = cpu_to_le16(intr_index), + .q_init.ring_size = ilog2(q->num_descs), + .q_init.ring_base = cpu_to_le64(q->base_pa), + .q_init.cq_ring_base = cpu_to_le64(cq->base_pa), + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +int ionic_db_page_num(struct ionic_lif *lif, int pid) +{ + return (lif->hw_index * lif->dbid_count) + pid; +} + +int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq, + struct ionic_intr_info *intr, + unsigned int num_descs, size_t desc_size) +{ + unsigned int ring_size; + + if (desc_size == 0 || !is_power_of_2(num_descs)) + return -EINVAL; + + ring_size = ilog2(num_descs); + if (ring_size < 2 || ring_size > 16) + return -EINVAL; + + cq->lif = lif; + cq->bound_intr = intr; + cq->num_descs = num_descs; + cq->desc_size = desc_size; + cq->tail_idx = 0; + cq->done_color = 1; + + return 0; +} + +void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa) +{ + struct ionic_cq_info *cur; + unsigned int i; + + cq->base = base; + cq->base_pa = base_pa; + + for (i = 0, cur = cq->info; i < cq->num_descs; i++, cur++) + cur->cq_desc = base + (i * cq->desc_size); +} + +void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q) +{ + cq->bound_q = q; +} + +unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do, + ionic_cq_cb cb, ionic_cq_done_cb done_cb, + void *done_arg) +{ + struct ionic_cq_info *cq_info; + unsigned int work_done = 0; + + if (work_to_do == 0) + return 0; + + cq_info = &cq->info[cq->tail_idx]; + while (cb(cq, cq_info)) { + if (cq->tail_idx == cq->num_descs - 1) + cq->done_color = !cq->done_color; + cq->tail_idx = (cq->tail_idx + 1) & (cq->num_descs - 1); + cq_info = &cq->info[cq->tail_idx]; + + if (++work_done >= work_to_do) + break; + } + + if (work_done && done_cb) + done_cb(done_arg); + + return work_done; +} + +int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev, + struct ionic_queue *q, unsigned int index, const char *name, + unsigned int num_descs, size_t desc_size, + size_t sg_desc_size, unsigned int pid) +{ + unsigned int ring_size; + + if (desc_size == 0 || !is_power_of_2(num_descs)) + return -EINVAL; + + ring_size = ilog2(num_descs); + if (ring_size < 2 || ring_size > 16) + return -EINVAL; + + q->lif = lif; + q->idev = idev; + q->index = index; + q->num_descs = num_descs; + q->desc_size = desc_size; + q->sg_desc_size = sg_desc_size; + q->tail_idx = 0; + q->head_idx = 0; + q->pid = pid; + + snprintf(q->name, sizeof(q->name), "L%d-%s%u", lif->index, name, index); + + return 0; +} + +void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa) +{ + struct ionic_desc_info *cur; + unsigned int i; + + q->base = base; + q->base_pa = base_pa; + + for (i = 0, cur = q->info; i < q->num_descs; i++, cur++) + cur->desc = base + (i * q->desc_size); +} + +void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa) +{ + struct ionic_desc_info *cur; + unsigned int i; + + q->sg_base = base; + q->sg_base_pa = base_pa; + + for (i = 0, cur = q->info; i < q->num_descs; i++, cur++) + cur->sg_desc = base + (i * q->sg_desc_size); +} + +void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb, + void *cb_arg) +{ + struct ionic_desc_info *desc_info; + struct ionic_lif *lif = q->lif; + struct device *dev = q->dev; + + desc_info = &q->info[q->head_idx]; + desc_info->cb = cb; + desc_info->cb_arg = cb_arg; + + q->head_idx = (q->head_idx + 1) & (q->num_descs - 1); + + dev_dbg(dev, "lif=%d qname=%s qid=%d qtype=%d p_index=%d ringdb=%d\n", + q->lif->index, q->name, q->hw_type, q->hw_index, + q->head_idx, ring_doorbell); + + if (ring_doorbell) { + ionic_dbell_ring(lif->kern_dbpage, q->hw_type, + q->dbval | q->head_idx); + + q->dbell_jiffies = jiffies; + + if (q_to_qcq(q)->napi_qcq) + mod_timer(&q_to_qcq(q)->napi_qcq->napi_deadline, + jiffies + IONIC_NAPI_DEADLINE); + } +} + +static bool ionic_q_is_posted(struct ionic_queue *q, unsigned int pos) +{ + unsigned int mask, tail, head; + + mask = q->num_descs - 1; + tail = q->tail_idx; + head = q->head_idx; + + return ((pos - tail) & mask) < ((head - tail) & mask); +} + +void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info, + unsigned int stop_index) +{ + struct ionic_desc_info *desc_info; + ionic_desc_cb cb; + void *cb_arg; + u16 index; + + /* check for empty queue */ + if (q->tail_idx == q->head_idx) + return; + + /* stop index must be for a descriptor that is not yet completed */ + if (unlikely(!ionic_q_is_posted(q, stop_index))) + dev_err(q->dev, + "ionic stop is not posted %s stop %u tail %u head %u\n", + q->name, stop_index, q->tail_idx, q->head_idx); + + do { + desc_info = &q->info[q->tail_idx]; + index = q->tail_idx; + q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); + + cb = desc_info->cb; + cb_arg = desc_info->cb_arg; + + desc_info->cb = NULL; + desc_info->cb_arg = NULL; + + if (cb) + cb(q, desc_info, cq_info, cb_arg); + } while (index != stop_index); +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h b/drivers/net/ethernet/pensando/ionic/ionic_dev.h new file mode 100644 index 000000000..13dfcf9f7 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h @@ -0,0 +1,374 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_DEV_H_ +#define _IONIC_DEV_H_ + +#include <linux/atomic.h> +#include <linux/mutex.h> +#include <linux/workqueue.h> + +#include "ionic_if.h" +#include "ionic_regs.h" + +#define IONIC_MAX_TX_DESC 8192 +#define IONIC_MAX_RX_DESC 16384 +#define IONIC_MIN_TXRX_DESC 64 +#define IONIC_DEF_TXRX_DESC 4096 +#define IONIC_RX_FILL_THRESHOLD 16 +#define IONIC_RX_FILL_DIV 8 +#define IONIC_LIFS_MAX 1024 +#define IONIC_WATCHDOG_SECS 5 +#define IONIC_ITR_COAL_USEC_DEFAULT 64 + +#define IONIC_DEV_CMD_REG_VERSION 1 +#define IONIC_DEV_INFO_REG_COUNT 32 +#define IONIC_DEV_CMD_REG_COUNT 32 + +#define IONIC_NAPI_DEADLINE (HZ / 200) /* 5ms */ +#define IONIC_ADMIN_DOORBELL_DEADLINE (HZ / 2) /* 500ms */ +#define IONIC_TX_DOORBELL_DEADLINE (HZ / 100) /* 10ms */ +#define IONIC_RX_MIN_DOORBELL_DEADLINE (HZ / 100) /* 10ms */ +#define IONIC_RX_MAX_DOORBELL_DEADLINE (HZ * 5) /* 5s */ + +struct ionic_dev_bar { + void __iomem *vaddr; + phys_addr_t bus_addr; + unsigned long len; + int res_index; +}; + +#ifndef __CHECKER__ +/* Registers */ +static_assert(sizeof(struct ionic_intr) == 32); + +static_assert(sizeof(struct ionic_doorbell) == 8); +static_assert(sizeof(struct ionic_intr_status) == 8); +static_assert(sizeof(union ionic_dev_regs) == 4096); +static_assert(sizeof(union ionic_dev_info_regs) == 2048); +static_assert(sizeof(union ionic_dev_cmd_regs) == 2048); +static_assert(sizeof(struct ionic_lif_stats) == 1024); + +static_assert(sizeof(struct ionic_admin_cmd) == 64); +static_assert(sizeof(struct ionic_admin_comp) == 16); +static_assert(sizeof(struct ionic_nop_cmd) == 64); +static_assert(sizeof(struct ionic_nop_comp) == 16); + +/* Device commands */ +static_assert(sizeof(struct ionic_dev_identify_cmd) == 64); +static_assert(sizeof(struct ionic_dev_identify_comp) == 16); +static_assert(sizeof(struct ionic_dev_init_cmd) == 64); +static_assert(sizeof(struct ionic_dev_init_comp) == 16); +static_assert(sizeof(struct ionic_dev_reset_cmd) == 64); +static_assert(sizeof(struct ionic_dev_reset_comp) == 16); +static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64); +static_assert(sizeof(struct ionic_dev_getattr_comp) == 16); +static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64); +static_assert(sizeof(struct ionic_dev_setattr_comp) == 16); +static_assert(sizeof(struct ionic_lif_setphc_cmd) == 64); + +/* Port commands */ +static_assert(sizeof(struct ionic_port_identify_cmd) == 64); +static_assert(sizeof(struct ionic_port_identify_comp) == 16); +static_assert(sizeof(struct ionic_port_init_cmd) == 64); +static_assert(sizeof(struct ionic_port_init_comp) == 16); +static_assert(sizeof(struct ionic_port_reset_cmd) == 64); +static_assert(sizeof(struct ionic_port_reset_comp) == 16); +static_assert(sizeof(struct ionic_port_getattr_cmd) == 64); +static_assert(sizeof(struct ionic_port_getattr_comp) == 16); +static_assert(sizeof(struct ionic_port_setattr_cmd) == 64); +static_assert(sizeof(struct ionic_port_setattr_comp) == 16); + +/* LIF commands */ +static_assert(sizeof(struct ionic_lif_init_cmd) == 64); +static_assert(sizeof(struct ionic_lif_init_comp) == 16); +static_assert(sizeof(struct ionic_lif_reset_cmd) == 64); +static_assert(sizeof(ionic_lif_reset_comp) == 16); +static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64); +static_assert(sizeof(struct ionic_lif_getattr_comp) == 16); +static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64); +static_assert(sizeof(struct ionic_lif_setattr_comp) == 16); + +static_assert(sizeof(struct ionic_q_init_cmd) == 64); +static_assert(sizeof(struct ionic_q_init_comp) == 16); +static_assert(sizeof(struct ionic_q_control_cmd) == 64); +static_assert(sizeof(ionic_q_control_comp) == 16); +static_assert(sizeof(struct ionic_q_identify_cmd) == 64); +static_assert(sizeof(struct ionic_q_identify_comp) == 16); + +static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64); +static_assert(sizeof(ionic_rx_mode_set_comp) == 16); +static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64); +static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16); +static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64); +static_assert(sizeof(ionic_rx_filter_del_comp) == 16); + +/* RDMA commands */ +static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64); +static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64); + +/* Events */ +static_assert(sizeof(struct ionic_notifyq_cmd) == 4); +static_assert(sizeof(union ionic_notifyq_comp) == 64); +static_assert(sizeof(struct ionic_notifyq_event) == 64); +static_assert(sizeof(struct ionic_link_change_event) == 64); +static_assert(sizeof(struct ionic_reset_event) == 64); +static_assert(sizeof(struct ionic_heartbeat_event) == 64); +static_assert(sizeof(struct ionic_log_event) == 64); + +/* I/O */ +static_assert(sizeof(struct ionic_txq_desc) == 16); +static_assert(sizeof(struct ionic_txq_sg_desc) == 128); +static_assert(sizeof(struct ionic_txq_comp) == 16); + +static_assert(sizeof(struct ionic_rxq_desc) == 16); +static_assert(sizeof(struct ionic_rxq_sg_desc) == 128); +static_assert(sizeof(struct ionic_rxq_comp) == 16); + +/* SR/IOV */ +static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64); +static_assert(sizeof(struct ionic_vf_setattr_comp) == 16); +static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64); +static_assert(sizeof(struct ionic_vf_getattr_comp) == 16); +#endif /* __CHECKER__ */ + +struct ionic_devinfo { + u8 asic_type; + u8 asic_rev; + char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1]; + char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1]; +}; + +struct ionic_dev { + union ionic_dev_info_regs __iomem *dev_info_regs; + union ionic_dev_cmd_regs __iomem *dev_cmd_regs; + struct ionic_hwstamp_regs __iomem *hwstamp_regs; + + atomic_long_t last_check_time; + unsigned long last_hb_time; + u32 last_fw_hb; + bool fw_hb_ready; + bool fw_status_ready; + u8 fw_generation; + + u64 __iomem *db_pages; + dma_addr_t phy_db_pages; + + struct ionic_intr __iomem *intr_ctrl; + u64 __iomem *intr_status; + + u32 port_info_sz; + struct ionic_port_info *port_info; + dma_addr_t port_info_pa; + + struct ionic_devinfo dev_info; +}; + +struct ionic_cq_info { + union { + void *cq_desc; + struct ionic_admin_comp *admincq; + struct ionic_notifyq_event *notifyq; + }; +}; + +struct ionic_queue; +struct ionic_qcq; +struct ionic_desc_info; + +typedef void (*ionic_desc_cb)(struct ionic_queue *q, + struct ionic_desc_info *desc_info, + struct ionic_cq_info *cq_info, void *cb_arg); + +#define IONIC_MAX_BUF_LEN ((u16)-1) +#define IONIC_PAGE_SIZE PAGE_SIZE +#define IONIC_PAGE_SPLIT_SZ (PAGE_SIZE / 2) +#define IONIC_PAGE_GFP_MASK (GFP_ATOMIC | __GFP_NOWARN |\ + __GFP_COMP | __GFP_MEMALLOC) + +struct ionic_buf_info { + struct page *page; + dma_addr_t dma_addr; + u32 page_offset; + u32 len; +}; + +#define IONIC_MAX_FRAGS (1 + IONIC_TX_MAX_SG_ELEMS_V1) + +struct ionic_desc_info { + union { + void *desc; + struct ionic_txq_desc *txq_desc; + struct ionic_rxq_desc *rxq_desc; + struct ionic_admin_cmd *adminq_desc; + }; + union { + void *sg_desc; + struct ionic_txq_sg_desc *txq_sg_desc; + struct ionic_rxq_sg_desc *rxq_sgl_desc; + }; + unsigned int bytes; + unsigned int nbufs; + struct ionic_buf_info bufs[IONIC_MAX_FRAGS]; + ionic_desc_cb cb; + void *cb_arg; +}; + +#define IONIC_QUEUE_NAME_MAX_SZ 16 + +struct ionic_queue { + struct device *dev; + struct ionic_lif *lif; + struct ionic_desc_info *info; + u64 dbval; + unsigned long dbell_deadline; + unsigned long dbell_jiffies; + u16 head_idx; + u16 tail_idx; + unsigned int index; + unsigned int num_descs; + unsigned int max_sg_elems; + u64 features; + u64 drop; + struct ionic_dev *idev; + unsigned int type; + unsigned int hw_index; + unsigned int hw_type; + union { + void *base; + struct ionic_txq_desc *txq; + struct ionic_rxq_desc *rxq; + struct ionic_admin_cmd *adminq; + }; + union { + void *sg_base; + struct ionic_txq_sg_desc *txq_sgl; + struct ionic_rxq_sg_desc *rxq_sgl; + }; + dma_addr_t base_pa; + dma_addr_t sg_base_pa; + unsigned int desc_size; + unsigned int sg_desc_size; + unsigned int pid; + char name[IONIC_QUEUE_NAME_MAX_SZ]; +} ____cacheline_aligned_in_smp; + +#define IONIC_INTR_INDEX_NOT_ASSIGNED -1 +#define IONIC_INTR_NAME_MAX_SZ 32 + +struct ionic_intr_info { + char name[IONIC_INTR_NAME_MAX_SZ]; + unsigned int index; + unsigned int vector; + u64 rearm_count; + unsigned int cpu; + cpumask_t affinity_mask; + u32 dim_coal_hw; +}; + +struct ionic_cq { + struct ionic_lif *lif; + struct ionic_cq_info *info; + struct ionic_queue *bound_q; + struct ionic_intr_info *bound_intr; + u16 tail_idx; + bool done_color; + unsigned int num_descs; + unsigned int desc_size; + void *base; + dma_addr_t base_pa; +} ____cacheline_aligned_in_smp; + +struct ionic; + +static inline void ionic_intr_init(struct ionic_dev *idev, + struct ionic_intr_info *intr, + unsigned long index) +{ + ionic_intr_clean(idev->intr_ctrl, index); + intr->index = index; +} + +static inline unsigned int ionic_q_space_avail(struct ionic_queue *q) +{ + unsigned int avail = q->tail_idx; + + if (q->head_idx >= avail) + avail += q->num_descs - q->head_idx - 1; + else + avail -= q->head_idx + 1; + + return avail; +} + +static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want) +{ + return ionic_q_space_avail(q) >= want; +} + +void ionic_init_devinfo(struct ionic *ionic); +int ionic_dev_setup(struct ionic *ionic); + +void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd); +u8 ionic_dev_cmd_status(struct ionic_dev *idev); +bool ionic_dev_cmd_done(struct ionic_dev *idev); +void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp); + +void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver); +void ionic_dev_cmd_init(struct ionic_dev *idev); +void ionic_dev_cmd_reset(struct ionic_dev *idev); + +void ionic_dev_cmd_port_identify(struct ionic_dev *idev); +void ionic_dev_cmd_port_init(struct ionic_dev *idev); +void ionic_dev_cmd_port_reset(struct ionic_dev *idev); +void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state); +void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed); +void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable); +void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type); +void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type); + +int ionic_set_vf_config(struct ionic *ionic, int vf, + struct ionic_vf_setattr_cmd *vfc); +int ionic_dev_cmd_vf_getattr(struct ionic *ionic, int vf, u8 attr, + struct ionic_vf_getattr_comp *comp); +void ionic_dev_cmd_queue_identify(struct ionic_dev *idev, + u16 lif_type, u8 qtype, u8 qver); +void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver); +void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index, + dma_addr_t addr); +void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index); +void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq, + u16 lif_index, u16 intr_index); + +int ionic_db_page_num(struct ionic_lif *lif, int pid); + +int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq, + struct ionic_intr_info *intr, + unsigned int num_descs, size_t desc_size); +void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa); +void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q); +typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info); +typedef void (*ionic_cq_done_cb)(void *done_arg); +unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do, + ionic_cq_cb cb, ionic_cq_done_cb done_cb, + void *done_arg); + +int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev, + struct ionic_queue *q, unsigned int index, const char *name, + unsigned int num_descs, size_t desc_size, + size_t sg_desc_size, unsigned int pid); +void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); +void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); +void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb, + void *cb_arg); +void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start); +void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info, + unsigned int stop_index); +int ionic_heartbeat_check(struct ionic *ionic); +bool ionic_is_fw_running(struct ionic_dev *idev); + +bool ionic_adminq_poke_doorbell(struct ionic_queue *q); +bool ionic_txq_poke_doorbell(struct ionic_queue *q); +bool ionic_rxq_poke_doorbell(struct ionic_queue *q); + +#endif /* _IONIC_DEV_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_devlink.c b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c new file mode 100644 index 000000000..2696dac21 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_devlink.c @@ -0,0 +1,106 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/module.h> +#include <linux/netdevice.h> + +#include "ionic.h" +#include "ionic_bus.h" +#include "ionic_lif.h" +#include "ionic_devlink.h" + +static int ionic_dl_flash_update(struct devlink *dl, + struct devlink_flash_update_params *params, + struct netlink_ext_ack *extack) +{ + struct ionic *ionic = devlink_priv(dl); + + return ionic_firmware_update(ionic->lif, params->fw, extack); +} + +static int ionic_dl_info_get(struct devlink *dl, struct devlink_info_req *req, + struct netlink_ext_ack *extack) +{ + struct ionic *ionic = devlink_priv(dl); + struct ionic_dev *idev = &ionic->idev; + char buf[16]; + int err = 0; + + err = devlink_info_driver_name_put(req, IONIC_DRV_NAME); + if (err) + return err; + + err = devlink_info_version_running_put(req, + DEVLINK_INFO_VERSION_GENERIC_FW, + idev->dev_info.fw_version); + if (err) + return err; + + snprintf(buf, sizeof(buf), "0x%x", idev->dev_info.asic_type); + err = devlink_info_version_fixed_put(req, + DEVLINK_INFO_VERSION_GENERIC_ASIC_ID, + buf); + if (err) + return err; + + snprintf(buf, sizeof(buf), "0x%x", idev->dev_info.asic_rev); + err = devlink_info_version_fixed_put(req, + DEVLINK_INFO_VERSION_GENERIC_ASIC_REV, + buf); + if (err) + return err; + + err = devlink_info_serial_number_put(req, idev->dev_info.serial_num); + + return err; +} + +static const struct devlink_ops ionic_dl_ops = { + .info_get = ionic_dl_info_get, + .flash_update = ionic_dl_flash_update, +}; + +struct ionic *ionic_devlink_alloc(struct device *dev) +{ + struct devlink *dl; + + dl = devlink_alloc(&ionic_dl_ops, sizeof(struct ionic), dev); + if (!dl) + return NULL; + + return devlink_priv(dl); +} + +void ionic_devlink_free(struct ionic *ionic) +{ + struct devlink *dl = priv_to_devlink(ionic); + + devlink_free(dl); +} + +int ionic_devlink_register(struct ionic *ionic) +{ + struct devlink *dl = priv_to_devlink(ionic); + struct devlink_port_attrs attrs = {}; + int err; + + attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; + devlink_port_attrs_set(&ionic->dl_port, &attrs); + err = devlink_port_register(dl, &ionic->dl_port, 0); + if (err) { + dev_err(ionic->dev, "devlink_port_register failed: %d\n", err); + return err; + } + + devlink_port_type_eth_set(&ionic->dl_port, ionic->lif->netdev); + devlink_register(dl); + return 0; +} + +void ionic_devlink_unregister(struct ionic *ionic) +{ + struct devlink *dl = priv_to_devlink(ionic); + + devlink_unregister(dl); + devlink_port_unregister(&ionic->dl_port); +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_devlink.h b/drivers/net/ethernet/pensando/ionic/ionic_devlink.h new file mode 100644 index 000000000..0a77e8e81 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_devlink.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_DEVLINK_H_ +#define _IONIC_DEVLINK_H_ + +#include <net/devlink.h> + +int ionic_firmware_update(struct ionic_lif *lif, const struct firmware *fw, + struct netlink_ext_ack *extack); + +struct ionic *ionic_devlink_alloc(struct device *dev); +void ionic_devlink_free(struct ionic *ionic); +int ionic_devlink_register(struct ionic *ionic); +void ionic_devlink_unregister(struct ionic *ionic); + +#endif /* _IONIC_DEVLINK_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c new file mode 100644 index 000000000..d7370fb60 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c @@ -0,0 +1,1003 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/sfp.h> + +#include "ionic.h" +#include "ionic_bus.h" +#include "ionic_lif.h" +#include "ionic_ethtool.h" +#include "ionic_stats.h" + +static void ionic_get_stats_strings(struct ionic_lif *lif, u8 *buf) +{ + u32 i; + + for (i = 0; i < ionic_num_stats_grps; i++) + ionic_stats_groups[i].get_strings(lif, &buf); +} + +static void ionic_get_stats(struct net_device *netdev, + struct ethtool_stats *stats, u64 *buf) +{ + struct ionic_lif *lif = netdev_priv(netdev); + u32 i; + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return; + + memset(buf, 0, stats->n_stats * sizeof(*buf)); + for (i = 0; i < ionic_num_stats_grps; i++) + ionic_stats_groups[i].get_values(lif, &buf); +} + +static int ionic_get_stats_count(struct ionic_lif *lif) +{ + int i, num_stats = 0; + + for (i = 0; i < ionic_num_stats_grps; i++) + num_stats += ionic_stats_groups[i].get_count(lif); + + return num_stats; +} + +static int ionic_get_sset_count(struct net_device *netdev, int sset) +{ + struct ionic_lif *lif = netdev_priv(netdev); + int count = 0; + + switch (sset) { + case ETH_SS_STATS: + count = ionic_get_stats_count(lif); + break; + } + return count; +} + +static void ionic_get_strings(struct net_device *netdev, + u32 sset, u8 *buf) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + switch (sset) { + case ETH_SS_STATS: + ionic_get_stats_strings(lif, buf); + break; + } +} + +static void ionic_get_drvinfo(struct net_device *netdev, + struct ethtool_drvinfo *drvinfo) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + + strscpy(drvinfo->driver, IONIC_DRV_NAME, sizeof(drvinfo->driver)); + strscpy(drvinfo->fw_version, ionic->idev.dev_info.fw_version, + sizeof(drvinfo->fw_version)); + strscpy(drvinfo->bus_info, ionic_bus_info(ionic), + sizeof(drvinfo->bus_info)); +} + +static int ionic_get_regs_len(struct net_device *netdev) +{ + return (IONIC_DEV_INFO_REG_COUNT + IONIC_DEV_CMD_REG_COUNT) * sizeof(u32); +} + +static void ionic_get_regs(struct net_device *netdev, struct ethtool_regs *regs, + void *p) +{ + struct ionic_lif *lif = netdev_priv(netdev); + unsigned int offset; + unsigned int size; + + regs->version = IONIC_DEV_CMD_REG_VERSION; + + offset = 0; + size = IONIC_DEV_INFO_REG_COUNT * sizeof(u32); + memcpy_fromio(p + offset, lif->ionic->idev.dev_info_regs->words, size); + + offset += size; + size = IONIC_DEV_CMD_REG_COUNT * sizeof(u32); + memcpy_fromio(p + offset, lif->ionic->idev.dev_cmd_regs->words, size); +} + +static int ionic_get_link_ksettings(struct net_device *netdev, + struct ethtool_link_ksettings *ks) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_dev *idev = &lif->ionic->idev; + int copper_seen = 0; + + ethtool_link_ksettings_zero_link_mode(ks, supported); + + if (!idev->port_info) { + netdev_err(netdev, "port_info not initialized\n"); + return -EOPNOTSUPP; + } + + /* The port_info data is found in a DMA space that the NIC keeps + * up-to-date, so there's no need to request the data from the + * NIC, we already have it in our memory space. + */ + + switch (le16_to_cpu(idev->port_info->status.xcvr.pid)) { + /* Copper */ + case IONIC_XCVR_PID_QSFP_100G_CR4: + ethtool_link_ksettings_add_link_mode(ks, supported, + 100000baseCR4_Full); + copper_seen++; + break; + case IONIC_XCVR_PID_QSFP_40GBASE_CR4: + ethtool_link_ksettings_add_link_mode(ks, supported, + 40000baseCR4_Full); + copper_seen++; + break; + case IONIC_XCVR_PID_SFP_25GBASE_CR_S: + case IONIC_XCVR_PID_SFP_25GBASE_CR_L: + case IONIC_XCVR_PID_SFP_25GBASE_CR_N: + ethtool_link_ksettings_add_link_mode(ks, supported, + 25000baseCR_Full); + copper_seen++; + break; + case IONIC_XCVR_PID_SFP_10GBASE_AOC: + case IONIC_XCVR_PID_SFP_10GBASE_CU: + ethtool_link_ksettings_add_link_mode(ks, supported, + 10000baseCR_Full); + copper_seen++; + break; + + /* Fibre */ + case IONIC_XCVR_PID_QSFP_100G_SR4: + case IONIC_XCVR_PID_QSFP_100G_AOC: + ethtool_link_ksettings_add_link_mode(ks, supported, + 100000baseSR4_Full); + break; + case IONIC_XCVR_PID_QSFP_100G_CWDM4: + case IONIC_XCVR_PID_QSFP_100G_PSM4: + case IONIC_XCVR_PID_QSFP_100G_LR4: + ethtool_link_ksettings_add_link_mode(ks, supported, + 100000baseLR4_ER4_Full); + break; + case IONIC_XCVR_PID_QSFP_100G_ER4: + ethtool_link_ksettings_add_link_mode(ks, supported, + 100000baseLR4_ER4_Full); + break; + case IONIC_XCVR_PID_QSFP_40GBASE_SR4: + case IONIC_XCVR_PID_QSFP_40GBASE_AOC: + ethtool_link_ksettings_add_link_mode(ks, supported, + 40000baseSR4_Full); + break; + case IONIC_XCVR_PID_QSFP_40GBASE_LR4: + ethtool_link_ksettings_add_link_mode(ks, supported, + 40000baseLR4_Full); + break; + case IONIC_XCVR_PID_SFP_25GBASE_SR: + case IONIC_XCVR_PID_SFP_25GBASE_AOC: + case IONIC_XCVR_PID_SFP_25GBASE_ACC: + ethtool_link_ksettings_add_link_mode(ks, supported, + 25000baseSR_Full); + break; + case IONIC_XCVR_PID_SFP_10GBASE_SR: + ethtool_link_ksettings_add_link_mode(ks, supported, + 10000baseSR_Full); + break; + case IONIC_XCVR_PID_SFP_10GBASE_LR: + ethtool_link_ksettings_add_link_mode(ks, supported, + 10000baseLR_Full); + break; + case IONIC_XCVR_PID_SFP_10GBASE_LRM: + ethtool_link_ksettings_add_link_mode(ks, supported, + 10000baseLRM_Full); + break; + case IONIC_XCVR_PID_SFP_10GBASE_ER: + ethtool_link_ksettings_add_link_mode(ks, supported, + 10000baseER_Full); + break; + case IONIC_XCVR_PID_SFP_10GBASE_T: + ethtool_link_ksettings_add_link_mode(ks, supported, + 10000baseT_Full); + break; + case IONIC_XCVR_PID_SFP_1000BASE_T: + ethtool_link_ksettings_add_link_mode(ks, supported, + 1000baseT_Full); + break; + case IONIC_XCVR_PID_UNKNOWN: + /* This means there's no module plugged in */ + break; + default: + dev_info(lif->ionic->dev, "unknown xcvr type pid=%d / 0x%x\n", + idev->port_info->status.xcvr.pid, + idev->port_info->status.xcvr.pid); + break; + } + + linkmode_copy(ks->link_modes.advertising, ks->link_modes.supported); + + ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); + ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); + if (idev->port_info->config.fec_type == IONIC_PORT_FEC_TYPE_FC) + ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_BASER); + else if (idev->port_info->config.fec_type == IONIC_PORT_FEC_TYPE_RS) + ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); + + ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE); + ethtool_link_ksettings_add_link_mode(ks, supported, Pause); + + if (idev->port_info->status.xcvr.phy == IONIC_PHY_TYPE_COPPER || + copper_seen) + ks->base.port = PORT_DA; + else if (idev->port_info->status.xcvr.phy == IONIC_PHY_TYPE_FIBER) + ks->base.port = PORT_FIBRE; + else + ks->base.port = PORT_NONE; + + if (ks->base.port != PORT_NONE) { + ks->base.speed = le32_to_cpu(lif->info->status.link_speed); + + if (le16_to_cpu(lif->info->status.link_status)) + ks->base.duplex = DUPLEX_FULL; + else + ks->base.duplex = DUPLEX_UNKNOWN; + + ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); + + if (idev->port_info->config.an_enable) { + ethtool_link_ksettings_add_link_mode(ks, advertising, + Autoneg); + ks->base.autoneg = AUTONEG_ENABLE; + } + } + + return 0; +} + +static int ionic_set_link_ksettings(struct net_device *netdev, + const struct ethtool_link_ksettings *ks) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_dev *idev = &lif->ionic->idev; + struct ionic *ionic = lif->ionic; + int err = 0; + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return -EBUSY; + + /* set autoneg */ + if (ks->base.autoneg != idev->port_info->config.an_enable) { + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_port_autoneg(idev, ks->base.autoneg); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + if (err) + return err; + } + + /* set speed */ + if (ks->base.speed != le32_to_cpu(idev->port_info->config.speed)) { + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_port_speed(idev, ks->base.speed); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + if (err) + return err; + } + + return 0; +} + +static void ionic_get_pauseparam(struct net_device *netdev, + struct ethtool_pauseparam *pause) +{ + struct ionic_lif *lif = netdev_priv(netdev); + u8 pause_type; + + pause->autoneg = 0; + + pause_type = lif->ionic->idev.port_info->config.pause_type; + if (pause_type) { + pause->rx_pause = (pause_type & IONIC_PAUSE_F_RX) ? 1 : 0; + pause->tx_pause = (pause_type & IONIC_PAUSE_F_TX) ? 1 : 0; + } +} + +static int ionic_set_pauseparam(struct net_device *netdev, + struct ethtool_pauseparam *pause) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + u32 requested_pause; + int err; + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return -EBUSY; + + if (pause->autoneg) + return -EOPNOTSUPP; + + /* change both at the same time */ + requested_pause = IONIC_PORT_PAUSE_TYPE_LINK; + if (pause->rx_pause) + requested_pause |= IONIC_PAUSE_F_RX; + if (pause->tx_pause) + requested_pause |= IONIC_PAUSE_F_TX; + + if (requested_pause == lif->ionic->idev.port_info->config.pause_type) + return 0; + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_port_pause(&lif->ionic->idev, requested_pause); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + if (err) + return err; + + return 0; +} + +static int ionic_get_fecparam(struct net_device *netdev, + struct ethtool_fecparam *fec) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + switch (lif->ionic->idev.port_info->config.fec_type) { + case IONIC_PORT_FEC_TYPE_NONE: + fec->active_fec = ETHTOOL_FEC_OFF; + break; + case IONIC_PORT_FEC_TYPE_RS: + fec->active_fec = ETHTOOL_FEC_RS; + break; + case IONIC_PORT_FEC_TYPE_FC: + fec->active_fec = ETHTOOL_FEC_BASER; + break; + } + + fec->fec = ETHTOOL_FEC_OFF | ETHTOOL_FEC_RS | ETHTOOL_FEC_BASER; + + return 0; +} + +static int ionic_set_fecparam(struct net_device *netdev, + struct ethtool_fecparam *fec) +{ + struct ionic_lif *lif = netdev_priv(netdev); + u8 fec_type; + int ret = 0; + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return -EBUSY; + + if (lif->ionic->idev.port_info->config.an_enable) { + netdev_err(netdev, "FEC request not allowed while autoneg is enabled\n"); + return -EINVAL; + } + + switch (fec->fec) { + case ETHTOOL_FEC_NONE: + fec_type = IONIC_PORT_FEC_TYPE_NONE; + break; + case ETHTOOL_FEC_OFF: + fec_type = IONIC_PORT_FEC_TYPE_NONE; + break; + case ETHTOOL_FEC_RS: + fec_type = IONIC_PORT_FEC_TYPE_RS; + break; + case ETHTOOL_FEC_BASER: + fec_type = IONIC_PORT_FEC_TYPE_FC; + break; + case ETHTOOL_FEC_AUTO: + default: + netdev_err(netdev, "FEC request 0x%04x not supported\n", + fec->fec); + return -EINVAL; + } + + if (fec_type != lif->ionic->idev.port_info->config.fec_type) { + mutex_lock(&lif->ionic->dev_cmd_lock); + ionic_dev_cmd_port_fec(&lif->ionic->idev, fec_type); + ret = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT); + mutex_unlock(&lif->ionic->dev_cmd_lock); + } + + return ret; +} + +static int ionic_get_coalesce(struct net_device *netdev, + struct ethtool_coalesce *coalesce, + struct kernel_ethtool_coalesce *kernel_coal, + struct netlink_ext_ack *extack) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + coalesce->tx_coalesce_usecs = lif->tx_coalesce_usecs; + coalesce->rx_coalesce_usecs = lif->rx_coalesce_usecs; + + if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) + coalesce->use_adaptive_tx_coalesce = test_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state); + else + coalesce->use_adaptive_tx_coalesce = 0; + + coalesce->use_adaptive_rx_coalesce = test_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state); + + return 0; +} + +static int ionic_set_coalesce(struct net_device *netdev, + struct ethtool_coalesce *coalesce, + struct kernel_ethtool_coalesce *kernel_coal, + struct netlink_ext_ack *extack) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_identity *ident; + u32 rx_coal, rx_dim; + u32 tx_coal, tx_dim; + unsigned int i; + + ident = &lif->ionic->ident; + if (ident->dev.intr_coal_div == 0) { + netdev_warn(netdev, "bad HW value in dev.intr_coal_div = %d\n", + ident->dev.intr_coal_div); + return -EIO; + } + + /* Tx normally shares Rx interrupt, so only change Rx if not split */ + if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state) && + (coalesce->tx_coalesce_usecs != lif->rx_coalesce_usecs || + coalesce->use_adaptive_tx_coalesce)) { + netdev_warn(netdev, "only rx parameters can be changed\n"); + return -EINVAL; + } + + /* Convert the usec request to a HW usable value. If they asked + * for non-zero and it resolved to zero, bump it up + */ + rx_coal = ionic_coal_usec_to_hw(lif->ionic, coalesce->rx_coalesce_usecs); + if (!rx_coal && coalesce->rx_coalesce_usecs) + rx_coal = 1; + tx_coal = ionic_coal_usec_to_hw(lif->ionic, coalesce->tx_coalesce_usecs); + if (!tx_coal && coalesce->tx_coalesce_usecs) + tx_coal = 1; + + if (rx_coal > IONIC_INTR_CTRL_COAL_MAX || + tx_coal > IONIC_INTR_CTRL_COAL_MAX) + return -ERANGE; + + /* Save the new values */ + lif->rx_coalesce_usecs = coalesce->rx_coalesce_usecs; + lif->rx_coalesce_hw = rx_coal; + + if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) + lif->tx_coalesce_usecs = coalesce->tx_coalesce_usecs; + else + lif->tx_coalesce_usecs = coalesce->rx_coalesce_usecs; + lif->tx_coalesce_hw = tx_coal; + + if (coalesce->use_adaptive_rx_coalesce) { + set_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state); + rx_dim = rx_coal; + } else { + clear_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state); + rx_dim = 0; + } + + if (coalesce->use_adaptive_tx_coalesce) { + set_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state); + tx_dim = tx_coal; + } else { + clear_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state); + tx_dim = 0; + } + + if (test_bit(IONIC_LIF_F_UP, lif->state)) { + for (i = 0; i < lif->nxqs; i++) { + if (lif->rxqcqs[i]->flags & IONIC_QCQ_F_INTR) { + ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, + lif->rxqcqs[i]->intr.index, + lif->rx_coalesce_hw); + lif->rxqcqs[i]->intr.dim_coal_hw = rx_dim; + } + + if (lif->txqcqs[i]->flags & IONIC_QCQ_F_INTR) { + ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, + lif->txqcqs[i]->intr.index, + lif->tx_coalesce_hw); + lif->txqcqs[i]->intr.dim_coal_hw = tx_dim; + } + } + } + + return 0; +} + +static void ionic_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kernel_ring, + struct netlink_ext_ack *extack) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + ring->tx_max_pending = IONIC_MAX_TX_DESC; + ring->tx_pending = lif->ntxq_descs; + ring->rx_max_pending = IONIC_MAX_RX_DESC; + ring->rx_pending = lif->nrxq_descs; +} + +static int ionic_set_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kernel_ring, + struct netlink_ext_ack *extack) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_queue_params qparam; + int err; + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return -EBUSY; + + ionic_init_queue_params(lif, &qparam); + + if (ring->rx_mini_pending || ring->rx_jumbo_pending) { + netdev_info(netdev, "Changing jumbo or mini descriptors not supported\n"); + return -EINVAL; + } + + if (!is_power_of_2(ring->tx_pending) || + !is_power_of_2(ring->rx_pending)) { + netdev_info(netdev, "Descriptor count must be a power of 2\n"); + return -EINVAL; + } + + /* if nothing to do return success */ + if (ring->tx_pending == lif->ntxq_descs && + ring->rx_pending == lif->nrxq_descs) + return 0; + + if (ring->tx_pending != lif->ntxq_descs) + netdev_info(netdev, "Changing Tx ring size from %d to %d\n", + lif->ntxq_descs, ring->tx_pending); + + if (ring->rx_pending != lif->nrxq_descs) + netdev_info(netdev, "Changing Rx ring size from %d to %d\n", + lif->nrxq_descs, ring->rx_pending); + + /* if we're not running, just set the values and return */ + if (!netif_running(lif->netdev)) { + lif->ntxq_descs = ring->tx_pending; + lif->nrxq_descs = ring->rx_pending; + return 0; + } + + qparam.ntxq_descs = ring->tx_pending; + qparam.nrxq_descs = ring->rx_pending; + + mutex_lock(&lif->queue_lock); + err = ionic_reconfigure_queues(lif, &qparam); + mutex_unlock(&lif->queue_lock); + if (err) + netdev_info(netdev, "Ring reconfiguration failed, changes canceled: %d\n", err); + + return err; +} + +static void ionic_get_channels(struct net_device *netdev, + struct ethtool_channels *ch) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + /* report maximum channels */ + ch->max_combined = lif->ionic->ntxqs_per_lif; + ch->max_rx = lif->ionic->ntxqs_per_lif / 2; + ch->max_tx = lif->ionic->ntxqs_per_lif / 2; + + /* report current channels */ + if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) { + ch->rx_count = lif->nxqs; + ch->tx_count = lif->nxqs; + } else { + ch->combined_count = lif->nxqs; + } +} + +static int ionic_set_channels(struct net_device *netdev, + struct ethtool_channels *ch) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_queue_params qparam; + int max_cnt; + int err; + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return -EBUSY; + + ionic_init_queue_params(lif, &qparam); + + if (ch->rx_count != ch->tx_count) { + netdev_info(netdev, "The rx and tx count must be equal\n"); + return -EINVAL; + } + + if (ch->combined_count && ch->rx_count) { + netdev_info(netdev, "Use either combined or rx and tx, not both\n"); + return -EINVAL; + } + + max_cnt = lif->ionic->ntxqs_per_lif; + if (ch->combined_count) { + if (ch->combined_count > max_cnt) + return -EINVAL; + + if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) + netdev_info(lif->netdev, "Sharing queue interrupts\n"); + else if (ch->combined_count == lif->nxqs) + return 0; + + if (lif->nxqs != ch->combined_count) + netdev_info(netdev, "Changing queue count from %d to %d\n", + lif->nxqs, ch->combined_count); + + qparam.nxqs = ch->combined_count; + qparam.intr_split = 0; + } else { + max_cnt /= 2; + if (ch->rx_count > max_cnt) + return -EINVAL; + + if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) + netdev_info(lif->netdev, "Splitting queue interrupts\n"); + else if (ch->rx_count == lif->nxqs) + return 0; + + if (lif->nxqs != ch->rx_count) + netdev_info(netdev, "Changing queue count from %d to %d\n", + lif->nxqs, ch->rx_count); + + qparam.nxqs = ch->rx_count; + qparam.intr_split = 1; + } + + /* if we're not running, just set the values and return */ + if (!netif_running(lif->netdev)) { + lif->nxqs = qparam.nxqs; + + if (qparam.intr_split) { + set_bit(IONIC_LIF_F_SPLIT_INTR, lif->state); + } else { + clear_bit(IONIC_LIF_F_SPLIT_INTR, lif->state); + lif->tx_coalesce_usecs = lif->rx_coalesce_usecs; + lif->tx_coalesce_hw = lif->rx_coalesce_hw; + } + return 0; + } + + mutex_lock(&lif->queue_lock); + err = ionic_reconfigure_queues(lif, &qparam); + mutex_unlock(&lif->queue_lock); + if (err) + netdev_info(netdev, "Queue reconfiguration failed, changes canceled: %d\n", err); + + return err; +} + +static int ionic_get_rxnfc(struct net_device *netdev, + struct ethtool_rxnfc *info, u32 *rules) +{ + struct ionic_lif *lif = netdev_priv(netdev); + int err = 0; + + switch (info->cmd) { + case ETHTOOL_GRXRINGS: + info->data = lif->nxqs; + break; + default: + netdev_dbg(netdev, "Command parameter %d is not supported\n", + info->cmd); + err = -EOPNOTSUPP; + } + + return err; +} + +static u32 ionic_get_rxfh_indir_size(struct net_device *netdev) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + return le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); +} + +static u32 ionic_get_rxfh_key_size(struct net_device *netdev) +{ + return IONIC_RSS_HASH_KEY_SIZE; +} + +static int ionic_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, + u8 *hfunc) +{ + struct ionic_lif *lif = netdev_priv(netdev); + unsigned int i, tbl_sz; + + if (indir) { + tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); + for (i = 0; i < tbl_sz; i++) + indir[i] = lif->rss_ind_tbl[i]; + } + + if (key) + memcpy(key, lif->rss_hash_key, IONIC_RSS_HASH_KEY_SIZE); + + if (hfunc) + *hfunc = ETH_RSS_HASH_TOP; + + return 0; +} + +static int ionic_set_rxfh(struct net_device *netdev, const u32 *indir, + const u8 *key, const u8 hfunc) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) + return -EOPNOTSUPP; + + return ionic_lif_rss_config(lif, lif->rss_types, key, indir); +} + +static int ionic_set_tunable(struct net_device *dev, + const struct ethtool_tunable *tuna, + const void *data) +{ + struct ionic_lif *lif = netdev_priv(dev); + + switch (tuna->id) { + case ETHTOOL_RX_COPYBREAK: + lif->rx_copybreak = *(u32 *)data; + break; + default: + return -EOPNOTSUPP; + } + + return 0; +} + +static int ionic_get_tunable(struct net_device *netdev, + const struct ethtool_tunable *tuna, void *data) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + switch (tuna->id) { + case ETHTOOL_RX_COPYBREAK: + *(u32 *)data = lif->rx_copybreak; + break; + default: + return -EOPNOTSUPP; + } + + return 0; +} + +static int ionic_get_module_info(struct net_device *netdev, + struct ethtool_modinfo *modinfo) + +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_dev *idev = &lif->ionic->idev; + struct ionic_xcvr_status *xcvr; + struct sfp_eeprom_base *sfp; + + xcvr = &idev->port_info->status.xcvr; + sfp = (struct sfp_eeprom_base *) xcvr->sprom; + + /* report the module data type and length */ + switch (sfp->phys_id) { + case SFF8024_ID_SFP: + modinfo->type = ETH_MODULE_SFF_8079; + modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; + break; + case SFF8024_ID_QSFP_8436_8636: + case SFF8024_ID_QSFP28_8636: + modinfo->type = ETH_MODULE_SFF_8436; + modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; + break; + default: + netdev_info(netdev, "unknown xcvr type 0x%02x\n", + xcvr->sprom[0]); + modinfo->type = 0; + modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; + break; + } + + return 0; +} + +static int ionic_get_module_eeprom(struct net_device *netdev, + struct ethtool_eeprom *ee, + u8 *data) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_dev *idev = &lif->ionic->idev; + struct ionic_xcvr_status *xcvr; + char tbuf[sizeof(xcvr->sprom)]; + int count = 10; + u32 len; + + /* The NIC keeps the module prom up-to-date in the DMA space + * so we can simply copy the module bytes into the data buffer. + */ + xcvr = &idev->port_info->status.xcvr; + len = min_t(u32, sizeof(xcvr->sprom), ee->len); + + do { + memcpy(data, xcvr->sprom, len); + memcpy(tbuf, xcvr->sprom, len); + + /* Let's make sure we got a consistent copy */ + if (!memcmp(data, tbuf, len)) + break; + + } while (--count); + + if (!count) + return -ETIMEDOUT; + + return 0; +} + +static int ionic_get_ts_info(struct net_device *netdev, + struct ethtool_ts_info *info) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + __le64 mask; + + if (!lif->phc || !lif->phc->ptp) + return ethtool_op_get_ts_info(netdev, info); + + info->phc_index = ptp_clock_index(lif->phc->ptp); + + info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | + SOF_TIMESTAMPING_RX_SOFTWARE | + SOF_TIMESTAMPING_SOFTWARE | + SOF_TIMESTAMPING_TX_HARDWARE | + SOF_TIMESTAMPING_RX_HARDWARE | + SOF_TIMESTAMPING_RAW_HARDWARE; + + /* tx modes */ + + info->tx_types = BIT(HWTSTAMP_TX_OFF) | + BIT(HWTSTAMP_TX_ON); + + mask = cpu_to_le64(BIT_ULL(IONIC_TXSTAMP_ONESTEP_SYNC)); + if (ionic->ident.lif.eth.hwstamp_tx_modes & mask) + info->tx_types |= BIT(HWTSTAMP_TX_ONESTEP_SYNC); + + mask = cpu_to_le64(BIT_ULL(IONIC_TXSTAMP_ONESTEP_P2P)); + if (ionic->ident.lif.eth.hwstamp_tx_modes & mask) + info->tx_types |= BIT(HWTSTAMP_TX_ONESTEP_P2P); + + /* rx filters */ + + info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | + BIT(HWTSTAMP_FILTER_ALL); + + mask = cpu_to_le64(IONIC_PKT_CLS_NTP_ALL); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_NTP_ALL); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP1_SYNC); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP1_DREQ); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP1_ALL); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_EVENT); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_L4_SYNC); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_L4_DREQ); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_L4_ALL); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_L2_SYNC); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_L2_DREQ); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_L2_ALL); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_SYNC); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_SYNC); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_DREQ); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ); + + mask = cpu_to_le64(IONIC_PKT_CLS_PTP2_ALL); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) == mask) + info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V2_EVENT); + + return 0; +} + +static int ionic_nway_reset(struct net_device *netdev) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + int err = 0; + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return -EBUSY; + + /* flap the link to force auto-negotiation */ + + mutex_lock(&ionic->dev_cmd_lock); + + ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_DOWN); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + + if (!err) { + ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + } + + mutex_unlock(&ionic->dev_cmd_lock); + + return err; +} + +static const struct ethtool_ops ionic_ethtool_ops = { + .supported_coalesce_params = ETHTOOL_COALESCE_USECS | + ETHTOOL_COALESCE_USE_ADAPTIVE_RX | + ETHTOOL_COALESCE_USE_ADAPTIVE_TX, + .get_drvinfo = ionic_get_drvinfo, + .get_regs_len = ionic_get_regs_len, + .get_regs = ionic_get_regs, + .get_link = ethtool_op_get_link, + .get_link_ksettings = ionic_get_link_ksettings, + .set_link_ksettings = ionic_set_link_ksettings, + .get_coalesce = ionic_get_coalesce, + .set_coalesce = ionic_set_coalesce, + .get_ringparam = ionic_get_ringparam, + .set_ringparam = ionic_set_ringparam, + .get_channels = ionic_get_channels, + .set_channels = ionic_set_channels, + .get_strings = ionic_get_strings, + .get_ethtool_stats = ionic_get_stats, + .get_sset_count = ionic_get_sset_count, + .get_rxnfc = ionic_get_rxnfc, + .get_rxfh_indir_size = ionic_get_rxfh_indir_size, + .get_rxfh_key_size = ionic_get_rxfh_key_size, + .get_rxfh = ionic_get_rxfh, + .set_rxfh = ionic_set_rxfh, + .get_tunable = ionic_get_tunable, + .set_tunable = ionic_set_tunable, + .get_module_info = ionic_get_module_info, + .get_module_eeprom = ionic_get_module_eeprom, + .get_pauseparam = ionic_get_pauseparam, + .set_pauseparam = ionic_set_pauseparam, + .get_fecparam = ionic_get_fecparam, + .set_fecparam = ionic_set_fecparam, + .get_ts_info = ionic_get_ts_info, + .nway_reset = ionic_nway_reset, +}; + +void ionic_ethtool_set_ops(struct net_device *netdev) +{ + netdev->ethtool_ops = &ionic_ethtool_ops; +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.h b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.h new file mode 100644 index 000000000..38b91b1d7 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_ETHTOOL_H_ +#define _IONIC_ETHTOOL_H_ + +void ionic_ethtool_set_ops(struct net_device *netdev); + +#endif /* _IONIC_ETHTOOL_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_fw.c b/drivers/net/ethernet/pensando/ionic/ionic_fw.c new file mode 100644 index 000000000..5f40324cd --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_fw.c @@ -0,0 +1,196 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2020 Pensando Systems, Inc */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/firmware.h> + +#include "ionic.h" +#include "ionic_dev.h" +#include "ionic_lif.h" +#include "ionic_devlink.h" + +/* The worst case wait for the install activity is about 25 minutes when + * installing a new CPLD, which is very seldom. Normal is about 30-35 + * seconds. Since the driver can't tell if a CPLD update will happen we + * set the timeout for the ugly case. + */ +#define IONIC_FW_INSTALL_TIMEOUT (25 * 60) +#define IONIC_FW_SELECT_TIMEOUT 30 + +/* Number of periodic log updates during fw file download */ +#define IONIC_FW_INTERVAL_FRACTION 32 + +static void ionic_dev_cmd_firmware_download(struct ionic_dev *idev, u64 addr, + u32 offset, u32 length) +{ + union ionic_dev_cmd cmd = { + .fw_download.opcode = IONIC_CMD_FW_DOWNLOAD, + .fw_download.offset = cpu_to_le32(offset), + .fw_download.addr = cpu_to_le64(addr), + .fw_download.length = cpu_to_le32(length), + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +static void ionic_dev_cmd_firmware_install(struct ionic_dev *idev) +{ + union ionic_dev_cmd cmd = { + .fw_control.opcode = IONIC_CMD_FW_CONTROL, + .fw_control.oper = IONIC_FW_INSTALL_ASYNC + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +static void ionic_dev_cmd_firmware_activate(struct ionic_dev *idev, u8 slot) +{ + union ionic_dev_cmd cmd = { + .fw_control.opcode = IONIC_CMD_FW_CONTROL, + .fw_control.oper = IONIC_FW_ACTIVATE_ASYNC, + .fw_control.slot = slot + }; + + ionic_dev_cmd_go(idev, &cmd); +} + +static int ionic_fw_status_long_wait(struct ionic *ionic, + const char *label, + unsigned long timeout, + u8 fw_cmd, + struct netlink_ext_ack *extack) +{ + union ionic_dev_cmd cmd = { + .fw_control.opcode = IONIC_CMD_FW_CONTROL, + .fw_control.oper = fw_cmd, + }; + unsigned long start_time; + unsigned long end_time; + int err; + + start_time = jiffies; + end_time = start_time + (timeout * HZ); + do { + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_go(&ionic->idev, &cmd); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + + msleep(20); + } while (time_before(jiffies, end_time) && (err == -EAGAIN || err == -ETIMEDOUT)); + + if (err == -EAGAIN || err == -ETIMEDOUT) { + NL_SET_ERR_MSG_MOD(extack, "Firmware wait timed out"); + dev_err(ionic->dev, "DEV_CMD firmware wait %s timed out\n", label); + } else if (err) { + NL_SET_ERR_MSG_MOD(extack, "Firmware wait failed"); + } + + return err; +} + +int ionic_firmware_update(struct ionic_lif *lif, const struct firmware *fw, + struct netlink_ext_ack *extack) +{ + struct ionic_dev *idev = &lif->ionic->idev; + struct net_device *netdev = lif->netdev; + struct ionic *ionic = lif->ionic; + union ionic_dev_cmd_comp comp; + u32 buf_sz, copy_sz, offset; + struct devlink *dl; + int next_interval; + int err = 0; + u8 fw_slot; + + netdev_info(netdev, "Installing firmware\n"); + + dl = priv_to_devlink(ionic); + devlink_flash_update_status_notify(dl, "Preparing to flash", NULL, 0, 0); + + buf_sz = sizeof(idev->dev_cmd_regs->data); + + netdev_dbg(netdev, + "downloading firmware - size %d part_sz %d nparts %lu\n", + (int)fw->size, buf_sz, DIV_ROUND_UP(fw->size, buf_sz)); + + offset = 0; + next_interval = 0; + while (offset < fw->size) { + if (offset >= next_interval) { + devlink_flash_update_status_notify(dl, "Downloading", NULL, + offset, fw->size); + next_interval = offset + (fw->size / IONIC_FW_INTERVAL_FRACTION); + } + + copy_sz = min_t(unsigned int, buf_sz, fw->size - offset); + mutex_lock(&ionic->dev_cmd_lock); + memcpy_toio(&idev->dev_cmd_regs->data, fw->data + offset, copy_sz); + ionic_dev_cmd_firmware_download(idev, + offsetof(union ionic_dev_cmd_regs, data), + offset, copy_sz); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + if (err) { + netdev_err(netdev, + "download failed offset 0x%x addr 0x%lx len 0x%x\n", + offset, offsetof(union ionic_dev_cmd_regs, data), + copy_sz); + NL_SET_ERR_MSG_MOD(extack, "Segment download failed"); + goto err_out; + } + offset += copy_sz; + } + devlink_flash_update_status_notify(dl, "Downloading", NULL, + fw->size, fw->size); + + devlink_flash_update_timeout_notify(dl, "Installing", NULL, + IONIC_FW_INSTALL_TIMEOUT); + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_firmware_install(idev); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp); + fw_slot = comp.fw_control.slot; + mutex_unlock(&ionic->dev_cmd_lock); + if (err) { + NL_SET_ERR_MSG_MOD(extack, "Failed to start firmware install"); + goto err_out; + } + + err = ionic_fw_status_long_wait(ionic, "Installing", + IONIC_FW_INSTALL_TIMEOUT, + IONIC_FW_INSTALL_STATUS, + extack); + if (err) + goto err_out; + + devlink_flash_update_timeout_notify(dl, "Selecting", NULL, + IONIC_FW_SELECT_TIMEOUT); + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_firmware_activate(idev, fw_slot); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + if (err) { + NL_SET_ERR_MSG_MOD(extack, "Failed to start firmware select"); + goto err_out; + } + + err = ionic_fw_status_long_wait(ionic, "Selecting", + IONIC_FW_SELECT_TIMEOUT, + IONIC_FW_ACTIVATE_STATUS, + extack); + if (err) + goto err_out; + + netdev_info(netdev, "Firmware update completed\n"); + +err_out: + if (err) + devlink_flash_update_status_notify(dl, "Flash failed", NULL, 0, 0); + else + devlink_flash_update_status_notify(dl, "Flash done", NULL, 0, 0); + return err; +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_if.h b/drivers/net/ethernet/pensando/ionic/ionic_if.h new file mode 100644 index 000000000..4a90f611c --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_if.h @@ -0,0 +1,3092 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR Linux-OpenIB) OR BSD-2-Clause */ +/* Copyright (c) 2017-2020 Pensando Systems, Inc. All rights reserved. */ + +#ifndef _IONIC_IF_H_ +#define _IONIC_IF_H_ + +#define IONIC_DEV_INFO_SIGNATURE 0x44455649 /* 'DEVI' */ +#define IONIC_DEV_INFO_VERSION 1 +#define IONIC_IFNAMSIZ 16 + +/** + * enum ionic_cmd_opcode - Device commands + */ +enum ionic_cmd_opcode { + IONIC_CMD_NOP = 0, + + /* Device commands */ + IONIC_CMD_IDENTIFY = 1, + IONIC_CMD_INIT = 2, + IONIC_CMD_RESET = 3, + IONIC_CMD_GETATTR = 4, + IONIC_CMD_SETATTR = 5, + + /* Port commands */ + IONIC_CMD_PORT_IDENTIFY = 10, + IONIC_CMD_PORT_INIT = 11, + IONIC_CMD_PORT_RESET = 12, + IONIC_CMD_PORT_GETATTR = 13, + IONIC_CMD_PORT_SETATTR = 14, + + /* LIF commands */ + IONIC_CMD_LIF_IDENTIFY = 20, + IONIC_CMD_LIF_INIT = 21, + IONIC_CMD_LIF_RESET = 22, + IONIC_CMD_LIF_GETATTR = 23, + IONIC_CMD_LIF_SETATTR = 24, + IONIC_CMD_LIF_SETPHC = 25, + + IONIC_CMD_RX_MODE_SET = 30, + IONIC_CMD_RX_FILTER_ADD = 31, + IONIC_CMD_RX_FILTER_DEL = 32, + + /* Queue commands */ + IONIC_CMD_Q_IDENTIFY = 39, + IONIC_CMD_Q_INIT = 40, + IONIC_CMD_Q_CONTROL = 41, + + /* RDMA commands */ + IONIC_CMD_RDMA_RESET_LIF = 50, + IONIC_CMD_RDMA_CREATE_EQ = 51, + IONIC_CMD_RDMA_CREATE_CQ = 52, + IONIC_CMD_RDMA_CREATE_ADMINQ = 53, + + /* SR/IOV commands */ + IONIC_CMD_VF_GETATTR = 60, + IONIC_CMD_VF_SETATTR = 61, + + /* QoS commands */ + IONIC_CMD_QOS_CLASS_IDENTIFY = 240, + IONIC_CMD_QOS_CLASS_INIT = 241, + IONIC_CMD_QOS_CLASS_RESET = 242, + IONIC_CMD_QOS_CLASS_UPDATE = 243, + IONIC_CMD_QOS_CLEAR_STATS = 244, + IONIC_CMD_QOS_RESET = 245, + + /* Firmware commands */ + IONIC_CMD_FW_DOWNLOAD = 252, + IONIC_CMD_FW_CONTROL = 253, + IONIC_CMD_FW_DOWNLOAD_V1 = 254, + IONIC_CMD_FW_CONTROL_V1 = 255, +}; + +/** + * enum ionic_status_code - Device command return codes + */ +enum ionic_status_code { + IONIC_RC_SUCCESS = 0, /* Success */ + IONIC_RC_EVERSION = 1, /* Incorrect version for request */ + IONIC_RC_EOPCODE = 2, /* Invalid cmd opcode */ + IONIC_RC_EIO = 3, /* I/O error */ + IONIC_RC_EPERM = 4, /* Permission denied */ + IONIC_RC_EQID = 5, /* Bad qid */ + IONIC_RC_EQTYPE = 6, /* Bad qtype */ + IONIC_RC_ENOENT = 7, /* No such element */ + IONIC_RC_EINTR = 8, /* operation interrupted */ + IONIC_RC_EAGAIN = 9, /* Try again */ + IONIC_RC_ENOMEM = 10, /* Out of memory */ + IONIC_RC_EFAULT = 11, /* Bad address */ + IONIC_RC_EBUSY = 12, /* Device or resource busy */ + IONIC_RC_EEXIST = 13, /* object already exists */ + IONIC_RC_EINVAL = 14, /* Invalid argument */ + IONIC_RC_ENOSPC = 15, /* No space left or alloc failure */ + IONIC_RC_ERANGE = 16, /* Parameter out of range */ + IONIC_RC_BAD_ADDR = 17, /* Descriptor contains a bad ptr */ + IONIC_RC_DEV_CMD = 18, /* Device cmd attempted on AdminQ */ + IONIC_RC_ENOSUPP = 19, /* Operation not supported */ + IONIC_RC_ERROR = 29, /* Generic error */ + IONIC_RC_ERDMA = 30, /* Generic RDMA error */ + IONIC_RC_EVFID = 31, /* VF ID does not exist */ + IONIC_RC_EBAD_FW = 32, /* FW file is invalid or corrupted */ +}; + +enum ionic_notifyq_opcode { + IONIC_EVENT_LINK_CHANGE = 1, + IONIC_EVENT_RESET = 2, + IONIC_EVENT_HEARTBEAT = 3, + IONIC_EVENT_LOG = 4, + IONIC_EVENT_XCVR = 5, +}; + +/** + * struct ionic_admin_cmd - General admin command format + * @opcode: Opcode for the command + * @lif_index: LIF index + * @cmd_data: Opcode-specific command bytes + */ +struct ionic_admin_cmd { + u8 opcode; + u8 rsvd; + __le16 lif_index; + u8 cmd_data[60]; +}; + +/** + * struct ionic_admin_comp - General admin command completion format + * @status: Status of the command (enum ionic_status_code) + * @comp_index: Index in the descriptor ring for which this is the completion + * @cmd_data: Command-specific bytes + * @color: Color bit (Always 0 for commands issued to the + * Device Cmd Registers) + */ +struct ionic_admin_comp { + u8 status; + u8 rsvd; + __le16 comp_index; + u8 cmd_data[11]; + u8 color; +#define IONIC_COMP_COLOR_MASK 0x80 +}; + +static inline u8 color_match(u8 color, u8 done_color) +{ + return (!!(color & IONIC_COMP_COLOR_MASK)) == done_color; +} + +/** + * struct ionic_nop_cmd - NOP command + * @opcode: opcode + */ +struct ionic_nop_cmd { + u8 opcode; + u8 rsvd[63]; +}; + +/** + * struct ionic_nop_comp - NOP command completion + * @status: Status of the command (enum ionic_status_code) + */ +struct ionic_nop_comp { + u8 status; + u8 rsvd[15]; +}; + +/** + * struct ionic_dev_init_cmd - Device init command + * @opcode: opcode + * @type: Device type + */ +struct ionic_dev_init_cmd { + u8 opcode; + u8 type; + u8 rsvd[62]; +}; + +/** + * struct ionic_dev_init_comp - Device init command completion + * @status: Status of the command (enum ionic_status_code) + */ +struct ionic_dev_init_comp { + u8 status; + u8 rsvd[15]; +}; + +/** + * struct ionic_dev_reset_cmd - Device reset command + * @opcode: opcode + */ +struct ionic_dev_reset_cmd { + u8 opcode; + u8 rsvd[63]; +}; + +/** + * struct ionic_dev_reset_comp - Reset command completion + * @status: Status of the command (enum ionic_status_code) + */ +struct ionic_dev_reset_comp { + u8 status; + u8 rsvd[15]; +}; + +#define IONIC_IDENTITY_VERSION_1 1 + +/** + * struct ionic_dev_identify_cmd - Driver/device identify command + * @opcode: opcode + * @ver: Highest version of identify supported by driver + */ +struct ionic_dev_identify_cmd { + u8 opcode; + u8 ver; + u8 rsvd[62]; +}; + +/** + * struct ionic_dev_identify_comp - Driver/device identify command completion + * @status: Status of the command (enum ionic_status_code) + * @ver: Version of identify returned by device + */ +struct ionic_dev_identify_comp { + u8 status; + u8 ver; + u8 rsvd[14]; +}; + +enum ionic_os_type { + IONIC_OS_TYPE_LINUX = 1, + IONIC_OS_TYPE_WIN = 2, + IONIC_OS_TYPE_DPDK = 3, + IONIC_OS_TYPE_FREEBSD = 4, + IONIC_OS_TYPE_IPXE = 5, + IONIC_OS_TYPE_ESXI = 6, +}; + +/** + * union ionic_drv_identity - driver identity information + * @os_type: OS type (see enum ionic_os_type) + * @os_dist: OS distribution, numeric format + * @os_dist_str: OS distribution, string format + * @kernel_ver: Kernel version, numeric format + * @kernel_ver_str: Kernel version, string format + * @driver_ver_str: Driver version, string format + */ +union ionic_drv_identity { + struct { + __le32 os_type; + __le32 os_dist; + char os_dist_str[128]; + __le32 kernel_ver; + char kernel_ver_str[32]; + char driver_ver_str[32]; + }; + __le32 words[478]; +}; + +/** + * union ionic_dev_identity - device identity information + * @version: Version of device identify + * @type: Identify type (0 for now) + * @nports: Number of ports provisioned + * @nlifs: Number of LIFs provisioned + * @nintrs: Number of interrupts provisioned + * @ndbpgs_per_lif: Number of doorbell pages per LIF + * @intr_coal_mult: Interrupt coalescing multiplication factor + * Scale user-supplied interrupt coalescing + * value in usecs to device units using: + * device units = usecs * mult / div + * @intr_coal_div: Interrupt coalescing division factor + * Scale user-supplied interrupt coalescing + * value in usecs to device units using: + * device units = usecs * mult / div + * @eq_count: Number of shared event queues + * @hwstamp_mask: Bitmask for subtraction of hardware tick values. + * @hwstamp_mult: Hardware tick to nanosecond multiplier. + * @hwstamp_shift: Hardware tick to nanosecond divisor (power of two). + */ +union ionic_dev_identity { + struct { + u8 version; + u8 type; + u8 rsvd[2]; + u8 nports; + u8 rsvd2[3]; + __le32 nlifs; + __le32 nintrs; + __le32 ndbpgs_per_lif; + __le32 intr_coal_mult; + __le32 intr_coal_div; + __le32 eq_count; + __le64 hwstamp_mask; + __le32 hwstamp_mult; + __le32 hwstamp_shift; + }; + __le32 words[478]; +}; + +enum ionic_lif_type { + IONIC_LIF_TYPE_CLASSIC = 0, + IONIC_LIF_TYPE_MACVLAN = 1, + IONIC_LIF_TYPE_NETQUEUE = 2, +}; + +/** + * struct ionic_lif_identify_cmd - LIF identify command + * @opcode: opcode + * @type: LIF type (enum ionic_lif_type) + * @ver: Version of identify returned by device + */ +struct ionic_lif_identify_cmd { + u8 opcode; + u8 type; + u8 ver; + u8 rsvd[61]; +}; + +/** + * struct ionic_lif_identify_comp - LIF identify command completion + * @status: Status of the command (enum ionic_status_code) + * @ver: Version of identify returned by device + */ +struct ionic_lif_identify_comp { + u8 status; + u8 ver; + u8 rsvd2[14]; +}; + +/** + * enum ionic_lif_capability - LIF capabilities + * @IONIC_LIF_CAP_ETH: LIF supports Ethernet + * @IONIC_LIF_CAP_RDMA: LIF supports RDMA + */ +enum ionic_lif_capability { + IONIC_LIF_CAP_ETH = BIT(0), + IONIC_LIF_CAP_RDMA = BIT(1), +}; + +/** + * enum ionic_logical_qtype - Logical Queue Types + * @IONIC_QTYPE_ADMINQ: Administrative Queue + * @IONIC_QTYPE_NOTIFYQ: Notify Queue + * @IONIC_QTYPE_RXQ: Receive Queue + * @IONIC_QTYPE_TXQ: Transmit Queue + * @IONIC_QTYPE_EQ: Event Queue + * @IONIC_QTYPE_MAX: Max queue type supported + */ +enum ionic_logical_qtype { + IONIC_QTYPE_ADMINQ = 0, + IONIC_QTYPE_NOTIFYQ = 1, + IONIC_QTYPE_RXQ = 2, + IONIC_QTYPE_TXQ = 3, + IONIC_QTYPE_EQ = 4, + IONIC_QTYPE_MAX = 16, +}; + +/** + * enum ionic_q_feature - Common Features for most queue types + * + * Common features use bits 0-15. Per-queue-type features use higher bits. + * + * @IONIC_QIDENT_F_CQ: Queue has completion ring + * @IONIC_QIDENT_F_SG: Queue has scatter/gather ring + * @IONIC_QIDENT_F_EQ: Queue can use event queue + * @IONIC_QIDENT_F_CMB: Queue is in cmb bar + * @IONIC_Q_F_2X_DESC: Double main descriptor size + * @IONIC_Q_F_2X_CQ_DESC: Double cq descriptor size + * @IONIC_Q_F_2X_SG_DESC: Double sg descriptor size + * @IONIC_Q_F_4X_DESC: Quadruple main descriptor size + * @IONIC_Q_F_4X_CQ_DESC: Quadruple cq descriptor size + * @IONIC_Q_F_4X_SG_DESC: Quadruple sg descriptor size + */ +enum ionic_q_feature { + IONIC_QIDENT_F_CQ = BIT_ULL(0), + IONIC_QIDENT_F_SG = BIT_ULL(1), + IONIC_QIDENT_F_EQ = BIT_ULL(2), + IONIC_QIDENT_F_CMB = BIT_ULL(3), + IONIC_Q_F_2X_DESC = BIT_ULL(4), + IONIC_Q_F_2X_CQ_DESC = BIT_ULL(5), + IONIC_Q_F_2X_SG_DESC = BIT_ULL(6), + IONIC_Q_F_4X_DESC = BIT_ULL(7), + IONIC_Q_F_4X_CQ_DESC = BIT_ULL(8), + IONIC_Q_F_4X_SG_DESC = BIT_ULL(9), +}; + +/** + * enum ionic_rxq_feature - RXQ-specific Features + * + * Per-queue-type features use bits 16 and higher. + * + * @IONIC_RXQ_F_HWSTAMP: Queue supports Hardware Timestamping + */ +enum ionic_rxq_feature { + IONIC_RXQ_F_HWSTAMP = BIT_ULL(16), +}; + +/** + * enum ionic_txq_feature - TXQ-specific Features + * + * Per-queue-type features use bits 16 and higher. + * + * @IONIC_TXQ_F_HWSTAMP: Queue supports Hardware Timestamping + */ +enum ionic_txq_feature { + IONIC_TXQ_F_HWSTAMP = BIT(16), +}; + +/** + * struct ionic_hwstamp_bits - Hardware timestamp decoding bits + * @IONIC_HWSTAMP_INVALID: Invalid hardware timestamp value + * @IONIC_HWSTAMP_CQ_NEGOFFSET: Timestamp field negative offset + * from the base cq descriptor. + */ +enum ionic_hwstamp_bits { + IONIC_HWSTAMP_INVALID = ~0ull, + IONIC_HWSTAMP_CQ_NEGOFFSET = 8, +}; + +/** + * struct ionic_lif_logical_qtype - Descriptor of logical to HW queue type + * @qtype: Hardware Queue Type + * @qid_count: Number of Queue IDs of the logical type + * @qid_base: Minimum Queue ID of the logical type + */ +struct ionic_lif_logical_qtype { + u8 qtype; + u8 rsvd[3]; + __le32 qid_count; + __le32 qid_base; +}; + +/** + * enum ionic_lif_state - LIF state + * @IONIC_LIF_DISABLE: LIF disabled + * @IONIC_LIF_ENABLE: LIF enabled + * @IONIC_LIF_QUIESCE: LIF Quiesced + */ +enum ionic_lif_state { + IONIC_LIF_QUIESCE = 0, + IONIC_LIF_ENABLE = 1, + IONIC_LIF_DISABLE = 2, +}; + +/** + * union ionic_lif_config - LIF configuration + * @state: LIF state (enum ionic_lif_state) + * @name: LIF name + * @mtu: MTU + * @mac: Station MAC address + * @vlan: Default Vlan ID + * @features: Features (enum ionic_eth_hw_features) + * @queue_count: Queue counts per queue-type + */ +union ionic_lif_config { + struct { + u8 state; + u8 rsvd[3]; + char name[IONIC_IFNAMSIZ]; + __le32 mtu; + u8 mac[6]; + __le16 vlan; + __le64 features; + __le32 queue_count[IONIC_QTYPE_MAX]; + } __packed; + __le32 words[64]; +}; + +/** + * struct ionic_lif_identity - LIF identity information (type-specific) + * + * @capabilities: LIF capabilities + * + * @eth: Ethernet identify structure + * @version: Ethernet identify structure version + * @max_ucast_filters: Number of perfect unicast addresses supported + * @max_mcast_filters: Number of perfect multicast addresses supported + * @min_frame_size: Minimum size of frames to be sent + * @max_frame_size: Maximum size of frames to be sent + * @hwstamp_tx_modes: Bitmask of BIT_ULL(enum ionic_txstamp_mode) + * @hwstamp_rx_filters: Bitmask of enum ionic_pkt_class + * @config: LIF config struct with features, mtu, mac, q counts + * + * @rdma: RDMA identify structure + * @version: RDMA version of opcodes and queue descriptors + * @qp_opcodes: Number of RDMA queue pair opcodes supported + * @admin_opcodes: Number of RDMA admin opcodes supported + * @npts_per_lif: Page table size per LIF + * @nmrs_per_lif: Number of memory regions per LIF + * @nahs_per_lif: Number of address handles per LIF + * @max_stride: Max work request stride + * @cl_stride: Cache line stride + * @pte_stride: Page table entry stride + * @rrq_stride: Remote RQ work request stride + * @rsq_stride: Remote SQ work request stride + * @dcqcn_profiles: Number of DCQCN profiles + * @aq_qtype: RDMA Admin Qtype + * @sq_qtype: RDMA Send Qtype + * @rq_qtype: RDMA Receive Qtype + * @cq_qtype: RDMA Completion Qtype + * @eq_qtype: RDMA Event Qtype + */ +union ionic_lif_identity { + struct { + __le64 capabilities; + + struct { + u8 version; + u8 rsvd[3]; + __le32 max_ucast_filters; + __le32 max_mcast_filters; + __le16 rss_ind_tbl_sz; + __le32 min_frame_size; + __le32 max_frame_size; + u8 rsvd2[2]; + __le64 hwstamp_tx_modes; + __le64 hwstamp_rx_filters; + u8 rsvd3[88]; + union ionic_lif_config config; + } __packed eth; + + struct { + u8 version; + u8 qp_opcodes; + u8 admin_opcodes; + u8 rsvd; + __le32 npts_per_lif; + __le32 nmrs_per_lif; + __le32 nahs_per_lif; + u8 max_stride; + u8 cl_stride; + u8 pte_stride; + u8 rrq_stride; + u8 rsq_stride; + u8 dcqcn_profiles; + u8 rsvd_dimensions[10]; + struct ionic_lif_logical_qtype aq_qtype; + struct ionic_lif_logical_qtype sq_qtype; + struct ionic_lif_logical_qtype rq_qtype; + struct ionic_lif_logical_qtype cq_qtype; + struct ionic_lif_logical_qtype eq_qtype; + } __packed rdma; + } __packed; + __le32 words[478]; +}; + +/** + * struct ionic_lif_init_cmd - LIF init command + * @opcode: Opcode + * @type: LIF type (enum ionic_lif_type) + * @index: LIF index + * @info_pa: Destination address for LIF info (struct ionic_lif_info) + */ +struct ionic_lif_init_cmd { + u8 opcode; + u8 type; + __le16 index; + __le32 rsvd; + __le64 info_pa; + u8 rsvd2[48]; +}; + +/** + * struct ionic_lif_init_comp - LIF init command completion + * @status: Status of the command (enum ionic_status_code) + * @hw_index: Hardware index of the initialized LIF + */ +struct ionic_lif_init_comp { + u8 status; + u8 rsvd; + __le16 hw_index; + u8 rsvd2[12]; +}; + +/** + * struct ionic_q_identify_cmd - queue identify command + * @opcode: opcode + * @lif_type: LIF type (enum ionic_lif_type) + * @type: Logical queue type (enum ionic_logical_qtype) + * @ver: Highest queue type version that the driver supports + */ +struct ionic_q_identify_cmd { + u8 opcode; + u8 rsvd; + __le16 lif_type; + u8 type; + u8 ver; + u8 rsvd2[58]; +}; + +/** + * struct ionic_q_identify_comp - queue identify command completion + * @status: Status of the command (enum ionic_status_code) + * @comp_index: Index in the descriptor ring for which this is the completion + * @ver: Queue type version that can be used with FW + */ +struct ionic_q_identify_comp { + u8 status; + u8 rsvd; + __le16 comp_index; + u8 ver; + u8 rsvd2[11]; +}; + +/** + * union ionic_q_identity - queue identity information + * @version: Queue type version that can be used with FW + * @supported: Bitfield of queue versions, first bit = ver 0 + * @features: Queue features (enum ionic_q_feature, etc) + * @desc_sz: Descriptor size + * @comp_sz: Completion descriptor size + * @sg_desc_sz: Scatter/Gather descriptor size + * @max_sg_elems: Maximum number of Scatter/Gather elements + * @sg_desc_stride: Number of Scatter/Gather elements per descriptor + */ +union ionic_q_identity { + struct { + u8 version; + u8 supported; + u8 rsvd[6]; + __le64 features; + __le16 desc_sz; + __le16 comp_sz; + __le16 sg_desc_sz; + __le16 max_sg_elems; + __le16 sg_desc_stride; + }; + __le32 words[478]; +}; + +/** + * struct ionic_q_init_cmd - Queue init command + * @opcode: opcode + * @type: Logical queue type + * @ver: Queue type version + * @lif_index: LIF index + * @index: (LIF, qtype) relative admin queue index + * @intr_index: Interrupt control register index, or Event queue index + * @pid: Process ID + * @flags: + * IRQ: Interrupt requested on completion + * ENA: Enable the queue. If ENA=0 the queue is initialized + * but remains disabled, to be later enabled with the + * Queue Enable command. If ENA=1, then queue is + * initialized and then enabled. + * SG: Enable Scatter-Gather on the queue. + * in number of descs. The actual ring size is + * (1 << ring_size). For example, to + * select a ring size of 64 descriptors write + * ring_size = 6. The minimum ring_size value is 2 + * for a ring size of 4 descriptors. The maximum + * ring_size value is 16 for a ring size of 64k + * descriptors. Values of ring_size <2 and >16 are + * reserved. + * EQ: Enable the Event Queue + * @cos: Class of service for this queue + * @ring_size: Queue ring size, encoded as a log2(size) + * @ring_base: Queue ring base address + * @cq_ring_base: Completion queue ring base address + * @sg_ring_base: Scatter/Gather ring base address + * @features: Mask of queue features to enable, if not in the flags above. + */ +struct ionic_q_init_cmd { + u8 opcode; + u8 rsvd; + __le16 lif_index; + u8 type; + u8 ver; + u8 rsvd1[2]; + __le32 index; + __le16 pid; + __le16 intr_index; + __le16 flags; +#define IONIC_QINIT_F_IRQ 0x01 /* Request interrupt on completion */ +#define IONIC_QINIT_F_ENA 0x02 /* Enable the queue */ +#define IONIC_QINIT_F_SG 0x04 /* Enable scatter/gather on the queue */ +#define IONIC_QINIT_F_EQ 0x08 /* Enable event queue */ +#define IONIC_QINIT_F_CMB 0x10 /* Enable cmb-based queue */ +#define IONIC_QINIT_F_DEBUG 0x80 /* Enable queue debugging */ + u8 cos; + u8 ring_size; + __le64 ring_base; + __le64 cq_ring_base; + __le64 sg_ring_base; + u8 rsvd2[12]; + __le64 features; +} __packed; + +/** + * struct ionic_q_init_comp - Queue init command completion + * @status: Status of the command (enum ionic_status_code) + * @comp_index: Index in the descriptor ring for which this is the completion + * @hw_index: Hardware Queue ID + * @hw_type: Hardware Queue type + * @color: Color + */ +struct ionic_q_init_comp { + u8 status; + u8 rsvd; + __le16 comp_index; + __le32 hw_index; + u8 hw_type; + u8 rsvd2[6]; + u8 color; +}; + +/* the device's internal addressing uses up to 52 bits */ +#define IONIC_ADDR_LEN 52 +#define IONIC_ADDR_MASK (BIT_ULL(IONIC_ADDR_LEN) - 1) + +enum ionic_txq_desc_opcode { + IONIC_TXQ_DESC_OPCODE_CSUM_NONE = 0, + IONIC_TXQ_DESC_OPCODE_CSUM_PARTIAL = 1, + IONIC_TXQ_DESC_OPCODE_CSUM_HW = 2, + IONIC_TXQ_DESC_OPCODE_TSO = 3, +}; + +/** + * struct ionic_txq_desc - Ethernet Tx queue descriptor format + * @cmd: Tx operation, see IONIC_TXQ_DESC_OPCODE_*: + * + * IONIC_TXQ_DESC_OPCODE_CSUM_NONE: + * Non-offload send. No segmentation, + * fragmentation or checksum calc/insertion is + * performed by device; packet is prepared + * to send by software stack and requires + * no further manipulation from device. + * + * IONIC_TXQ_DESC_OPCODE_CSUM_PARTIAL: + * Offload 16-bit L4 checksum + * calculation/insertion. The device will + * calculate the L4 checksum value and + * insert the result in the packet's L4 + * header checksum field. The L4 checksum + * is calculated starting at @csum_start bytes + * into the packet to the end of the packet. + * The checksum insertion position is given + * in @csum_offset, which is the offset from + * @csum_start to the checksum field in the L4 + * header. This feature is only applicable to + * protocols such as TCP, UDP and ICMP where a + * standard (i.e. the 'IP-style' checksum) + * one's complement 16-bit checksum is used, + * using an IP pseudo-header to seed the + * calculation. Software will preload the L4 + * checksum field with the IP pseudo-header + * checksum. + * + * For tunnel encapsulation, @csum_start and + * @csum_offset refer to the inner L4 + * header. Supported tunnels encapsulations + * are: IPIP, GRE, and UDP. If the @encap + * is clear, no further processing by the + * device is required; software will + * calculate the outer header checksums. If + * the @encap is set, the device will + * offload the outer header checksums using + * LCO (local checksum offload) (see + * Documentation/networking/checksum-offloads.rst + * for more info). + * + * IONIC_TXQ_DESC_OPCODE_CSUM_HW: + * Offload 16-bit checksum computation to hardware. + * If @csum_l3 is set then the packet's L3 checksum is + * updated. Similarly, if @csum_l4 is set the L4 + * checksum is updated. If @encap is set then encap header + * checksums are also updated. + * + * IONIC_TXQ_DESC_OPCODE_TSO: + * Device performs TCP segmentation offload + * (TSO). @hdr_len is the number of bytes + * to the end of TCP header (the offset to + * the TCP payload). @mss is the desired + * MSS, the TCP payload length for each + * segment. The device will calculate/ + * insert IP (IPv4 only) and TCP checksums + * for each segment. In the first data + * buffer containing the header template, + * the driver will set IPv4 checksum to 0 + * and preload TCP checksum with the IP + * pseudo header calculated with IP length = 0. + * + * Supported tunnel encapsulations are IPIP, + * layer-3 GRE, and UDP. @hdr_len includes + * both outer and inner headers. The driver + * will set IPv4 checksum to zero and + * preload TCP checksum with IP pseudo + * header on the inner header. + * + * TCP ECN offload is supported. The device + * will set CWR flag in the first segment if + * CWR is set in the template header, and + * clear CWR in remaining segments. + * @flags: + * vlan: + * Insert an L2 VLAN header using @vlan_tci + * encap: + * Calculate encap header checksum + * csum_l3: + * Compute L3 header checksum + * csum_l4: + * Compute L4 header checksum + * tso_sot: + * TSO start + * tso_eot: + * TSO end + * @num_sg_elems: Number of scatter-gather elements in SG + * descriptor + * @addr: First data buffer's DMA address + * (Subsequent data buffers are on txq_sg_desc) + * @len: First data buffer's length, in bytes + * @vlan_tci: VLAN tag to insert in the packet (if requested + * by @V-bit). Includes .1p and .1q tags + * @hdr_len: Length of packet headers, including + * encapsulating outer header, if applicable + * Valid for opcodes IONIC_TXQ_DESC_OPCODE_CALC_CSUM and + * IONIC_TXQ_DESC_OPCODE_TSO. Should be set to zero for + * all other modes. For + * IONIC_TXQ_DESC_OPCODE_CALC_CSUM, @hdr_len is length + * of headers up to inner-most L4 header. For + * IONIC_TXQ_DESC_OPCODE_TSO, @hdr_len is up to + * inner-most L4 payload, so inclusive of + * inner-most L4 header. + * @mss: Desired MSS value for TSO; only applicable for + * IONIC_TXQ_DESC_OPCODE_TSO + * @csum_start: Offset from packet to first byte checked in L4 checksum + * @csum_offset: Offset from csum_start to L4 checksum field + */ +struct ionic_txq_desc { + __le64 cmd; +#define IONIC_TXQ_DESC_OPCODE_MASK 0xf +#define IONIC_TXQ_DESC_OPCODE_SHIFT 4 +#define IONIC_TXQ_DESC_FLAGS_MASK 0xf +#define IONIC_TXQ_DESC_FLAGS_SHIFT 0 +#define IONIC_TXQ_DESC_NSGE_MASK 0xf +#define IONIC_TXQ_DESC_NSGE_SHIFT 8 +#define IONIC_TXQ_DESC_ADDR_MASK (BIT_ULL(IONIC_ADDR_LEN) - 1) +#define IONIC_TXQ_DESC_ADDR_SHIFT 12 + +/* common flags */ +#define IONIC_TXQ_DESC_FLAG_VLAN 0x1 +#define IONIC_TXQ_DESC_FLAG_ENCAP 0x2 + +/* flags for csum_hw opcode */ +#define IONIC_TXQ_DESC_FLAG_CSUM_L3 0x4 +#define IONIC_TXQ_DESC_FLAG_CSUM_L4 0x8 + +/* flags for tso opcode */ +#define IONIC_TXQ_DESC_FLAG_TSO_SOT 0x4 +#define IONIC_TXQ_DESC_FLAG_TSO_EOT 0x8 + + __le16 len; + union { + __le16 vlan_tci; + __le16 hword0; + }; + union { + __le16 csum_start; + __le16 hdr_len; + __le16 hword1; + }; + union { + __le16 csum_offset; + __le16 mss; + __le16 hword2; + }; +}; + +static inline u64 encode_txq_desc_cmd(u8 opcode, u8 flags, + u8 nsge, u64 addr) +{ + u64 cmd; + + cmd = (opcode & IONIC_TXQ_DESC_OPCODE_MASK) << IONIC_TXQ_DESC_OPCODE_SHIFT; + cmd |= (flags & IONIC_TXQ_DESC_FLAGS_MASK) << IONIC_TXQ_DESC_FLAGS_SHIFT; + cmd |= (nsge & IONIC_TXQ_DESC_NSGE_MASK) << IONIC_TXQ_DESC_NSGE_SHIFT; + cmd |= (addr & IONIC_TXQ_DESC_ADDR_MASK) << IONIC_TXQ_DESC_ADDR_SHIFT; + + return cmd; +}; + +static inline void decode_txq_desc_cmd(u64 cmd, u8 *opcode, u8 *flags, + u8 *nsge, u64 *addr) +{ + *opcode = (cmd >> IONIC_TXQ_DESC_OPCODE_SHIFT) & IONIC_TXQ_DESC_OPCODE_MASK; + *flags = (cmd >> IONIC_TXQ_DESC_FLAGS_SHIFT) & IONIC_TXQ_DESC_FLAGS_MASK; + *nsge = (cmd >> IONIC_TXQ_DESC_NSGE_SHIFT) & IONIC_TXQ_DESC_NSGE_MASK; + *addr = (cmd >> IONIC_TXQ_DESC_ADDR_SHIFT) & IONIC_TXQ_DESC_ADDR_MASK; +}; + +/** + * struct ionic_txq_sg_elem - Transmit scatter-gather (SG) descriptor element + * @addr: DMA address of SG element data buffer + * @len: Length of SG element data buffer, in bytes + */ +struct ionic_txq_sg_elem { + __le64 addr; + __le16 len; + __le16 rsvd[3]; +}; + +/** + * struct ionic_txq_sg_desc - Transmit scatter-gather (SG) list + * @elems: Scatter-gather elements + */ +struct ionic_txq_sg_desc { +#define IONIC_TX_MAX_SG_ELEMS 8 +#define IONIC_TX_SG_DESC_STRIDE 8 + struct ionic_txq_sg_elem elems[IONIC_TX_MAX_SG_ELEMS]; +}; + +struct ionic_txq_sg_desc_v1 { +#define IONIC_TX_MAX_SG_ELEMS_V1 15 +#define IONIC_TX_SG_DESC_STRIDE_V1 16 + struct ionic_txq_sg_elem elems[IONIC_TX_SG_DESC_STRIDE_V1]; +}; + +/** + * struct ionic_txq_comp - Ethernet transmit queue completion descriptor + * @status: Status of the command (enum ionic_status_code) + * @comp_index: Index in the descriptor ring for which this is the completion + * @color: Color bit + */ +struct ionic_txq_comp { + u8 status; + u8 rsvd; + __le16 comp_index; + u8 rsvd2[11]; + u8 color; +}; + +enum ionic_rxq_desc_opcode { + IONIC_RXQ_DESC_OPCODE_SIMPLE = 0, + IONIC_RXQ_DESC_OPCODE_SG = 1, +}; + +/** + * struct ionic_rxq_desc - Ethernet Rx queue descriptor format + * @opcode: Rx operation, see IONIC_RXQ_DESC_OPCODE_*: + * + * IONIC_RXQ_DESC_OPCODE_SIMPLE: + * Receive full packet into data buffer + * starting at @addr. Results of + * receive, including actual bytes received, + * are recorded in Rx completion descriptor. + * + * @len: Data buffer's length, in bytes + * @addr: Data buffer's DMA address + */ +struct ionic_rxq_desc { + u8 opcode; + u8 rsvd[5]; + __le16 len; + __le64 addr; +}; + +/** + * struct ionic_rxq_sg_elem - Receive scatter-gather (SG) descriptor element + * @addr: DMA address of SG element data buffer + * @len: Length of SG element data buffer, in bytes + */ +struct ionic_rxq_sg_elem { + __le64 addr; + __le16 len; + __le16 rsvd[3]; +}; + +/** + * struct ionic_rxq_sg_desc - Receive scatter-gather (SG) list + * @elems: Scatter-gather elements + */ +struct ionic_rxq_sg_desc { +#define IONIC_RX_MAX_SG_ELEMS 8 +#define IONIC_RX_SG_DESC_STRIDE 8 + struct ionic_rxq_sg_elem elems[IONIC_RX_SG_DESC_STRIDE]; +}; + +/** + * struct ionic_rxq_comp - Ethernet receive queue completion descriptor + * @status: Status of the command (enum ionic_status_code) + * @num_sg_elems: Number of SG elements used by this descriptor + * @comp_index: Index in the descriptor ring for which this is the completion + * @rss_hash: 32-bit RSS hash + * @csum: 16-bit sum of the packet's L2 payload + * If the packet's L2 payload is odd length, an extra + * zero-value byte is included in the @csum calculation but + * not included in @len. + * @vlan_tci: VLAN tag stripped from the packet. Valid if @VLAN is + * set. Includes .1p and .1q tags. + * @len: Received packet length, in bytes. Excludes FCS. + * @csum_calc L2 payload checksum is computed or not + * @csum_flags: See IONIC_RXQ_COMP_CSUM_F_*: + * + * IONIC_RXQ_COMP_CSUM_F_TCP_OK: + * The TCP checksum calculated by the device + * matched the checksum in the receive packet's + * TCP header. + * + * IONIC_RXQ_COMP_CSUM_F_TCP_BAD: + * The TCP checksum calculated by the device did + * not match the checksum in the receive packet's + * TCP header. + * + * IONIC_RXQ_COMP_CSUM_F_UDP_OK: + * The UDP checksum calculated by the device + * matched the checksum in the receive packet's + * UDP header + * + * IONIC_RXQ_COMP_CSUM_F_UDP_BAD: + * The UDP checksum calculated by the device did + * not match the checksum in the receive packet's + * UDP header. + * + * IONIC_RXQ_COMP_CSUM_F_IP_OK: + * The IPv4 checksum calculated by the device + * matched the checksum in the receive packet's + * first IPv4 header. If the receive packet + * contains both a tunnel IPv4 header and a + * transport IPv4 header, the device validates the + * checksum for the both IPv4 headers. + * + * IONIC_RXQ_COMP_CSUM_F_IP_BAD: + * The IPv4 checksum calculated by the device did + * not match the checksum in the receive packet's + * first IPv4 header. If the receive packet + * contains both a tunnel IPv4 header and a + * transport IPv4 header, the device validates the + * checksum for both IP headers. + * + * IONIC_RXQ_COMP_CSUM_F_VLAN: + * The VLAN header was stripped and placed in @vlan_tci. + * + * IONIC_RXQ_COMP_CSUM_F_CALC: + * The checksum was calculated by the device. + * + * @pkt_type_color: Packet type and color bit; see IONIC_RXQ_COMP_PKT_TYPE_MASK + */ +struct ionic_rxq_comp { + u8 status; + u8 num_sg_elems; + __le16 comp_index; + __le32 rss_hash; + __le16 csum; + __le16 vlan_tci; + __le16 len; + u8 csum_flags; +#define IONIC_RXQ_COMP_CSUM_F_TCP_OK 0x01 +#define IONIC_RXQ_COMP_CSUM_F_TCP_BAD 0x02 +#define IONIC_RXQ_COMP_CSUM_F_UDP_OK 0x04 +#define IONIC_RXQ_COMP_CSUM_F_UDP_BAD 0x08 +#define IONIC_RXQ_COMP_CSUM_F_IP_OK 0x10 +#define IONIC_RXQ_COMP_CSUM_F_IP_BAD 0x20 +#define IONIC_RXQ_COMP_CSUM_F_VLAN 0x40 +#define IONIC_RXQ_COMP_CSUM_F_CALC 0x80 + u8 pkt_type_color; +#define IONIC_RXQ_COMP_PKT_TYPE_MASK 0x7f +}; + +enum ionic_pkt_type { + IONIC_PKT_TYPE_NON_IP = 0x00, + IONIC_PKT_TYPE_IPV4 = 0x01, + IONIC_PKT_TYPE_IPV4_TCP = 0x03, + IONIC_PKT_TYPE_IPV4_UDP = 0x05, + IONIC_PKT_TYPE_IPV6 = 0x08, + IONIC_PKT_TYPE_IPV6_TCP = 0x18, + IONIC_PKT_TYPE_IPV6_UDP = 0x28, + /* below types are only used if encap offloads are enabled on lif */ + IONIC_PKT_TYPE_ENCAP_NON_IP = 0x40, + IONIC_PKT_TYPE_ENCAP_IPV4 = 0x41, + IONIC_PKT_TYPE_ENCAP_IPV4_TCP = 0x43, + IONIC_PKT_TYPE_ENCAP_IPV4_UDP = 0x45, + IONIC_PKT_TYPE_ENCAP_IPV6 = 0x48, + IONIC_PKT_TYPE_ENCAP_IPV6_TCP = 0x58, + IONIC_PKT_TYPE_ENCAP_IPV6_UDP = 0x68, +}; + +enum ionic_eth_hw_features { + IONIC_ETH_HW_VLAN_TX_TAG = BIT(0), + IONIC_ETH_HW_VLAN_RX_STRIP = BIT(1), + IONIC_ETH_HW_VLAN_RX_FILTER = BIT(2), + IONIC_ETH_HW_RX_HASH = BIT(3), + IONIC_ETH_HW_RX_CSUM = BIT(4), + IONIC_ETH_HW_TX_SG = BIT(5), + IONIC_ETH_HW_RX_SG = BIT(6), + IONIC_ETH_HW_TX_CSUM = BIT(7), + IONIC_ETH_HW_TSO = BIT(8), + IONIC_ETH_HW_TSO_IPV6 = BIT(9), + IONIC_ETH_HW_TSO_ECN = BIT(10), + IONIC_ETH_HW_TSO_GRE = BIT(11), + IONIC_ETH_HW_TSO_GRE_CSUM = BIT(12), + IONIC_ETH_HW_TSO_IPXIP4 = BIT(13), + IONIC_ETH_HW_TSO_IPXIP6 = BIT(14), + IONIC_ETH_HW_TSO_UDP = BIT(15), + IONIC_ETH_HW_TSO_UDP_CSUM = BIT(16), + IONIC_ETH_HW_RX_CSUM_GENEVE = BIT(17), + IONIC_ETH_HW_TX_CSUM_GENEVE = BIT(18), + IONIC_ETH_HW_TSO_GENEVE = BIT(19), + IONIC_ETH_HW_TIMESTAMP = BIT(20), +}; + +/** + * enum ionic_pkt_class - Packet classification mask. + * + * Used with rx steering filter, packets indicated by the mask can be steered + * toward a specific receive queue. + * + * @IONIC_PKT_CLS_NTP_ALL: All NTP packets. + * @IONIC_PKT_CLS_PTP1_SYNC: PTPv1 sync + * @IONIC_PKT_CLS_PTP1_DREQ: PTPv1 delay-request + * @IONIC_PKT_CLS_PTP1_ALL: PTPv1 all packets + * @IONIC_PKT_CLS_PTP2_L4_SYNC: PTPv2-UDP sync + * @IONIC_PKT_CLS_PTP2_L4_DREQ: PTPv2-UDP delay-request + * @IONIC_PKT_CLS_PTP2_L4_ALL: PTPv2-UDP all packets + * @IONIC_PKT_CLS_PTP2_L2_SYNC: PTPv2-ETH sync + * @IONIC_PKT_CLS_PTP2_L2_DREQ: PTPv2-ETH delay-request + * @IONIC_PKT_CLS_PTP2_L2_ALL: PTPv2-ETH all packets + * @IONIC_PKT_CLS_PTP2_SYNC: PTPv2 sync + * @IONIC_PKT_CLS_PTP2_DREQ: PTPv2 delay-request + * @IONIC_PKT_CLS_PTP2_ALL: PTPv2 all packets + * @IONIC_PKT_CLS_PTP_SYNC: PTP sync + * @IONIC_PKT_CLS_PTP_DREQ: PTP delay-request + * @IONIC_PKT_CLS_PTP_ALL: PTP all packets + */ +enum ionic_pkt_class { + IONIC_PKT_CLS_NTP_ALL = BIT(0), + + IONIC_PKT_CLS_PTP1_SYNC = BIT(1), + IONIC_PKT_CLS_PTP1_DREQ = BIT(2), + IONIC_PKT_CLS_PTP1_ALL = BIT(3) | + IONIC_PKT_CLS_PTP1_SYNC | IONIC_PKT_CLS_PTP1_DREQ, + + IONIC_PKT_CLS_PTP2_L4_SYNC = BIT(4), + IONIC_PKT_CLS_PTP2_L4_DREQ = BIT(5), + IONIC_PKT_CLS_PTP2_L4_ALL = BIT(6) | + IONIC_PKT_CLS_PTP2_L4_SYNC | IONIC_PKT_CLS_PTP2_L4_DREQ, + + IONIC_PKT_CLS_PTP2_L2_SYNC = BIT(7), + IONIC_PKT_CLS_PTP2_L2_DREQ = BIT(8), + IONIC_PKT_CLS_PTP2_L2_ALL = BIT(9) | + IONIC_PKT_CLS_PTP2_L2_SYNC | IONIC_PKT_CLS_PTP2_L2_DREQ, + + IONIC_PKT_CLS_PTP2_SYNC = + IONIC_PKT_CLS_PTP2_L4_SYNC | IONIC_PKT_CLS_PTP2_L2_SYNC, + IONIC_PKT_CLS_PTP2_DREQ = + IONIC_PKT_CLS_PTP2_L4_DREQ | IONIC_PKT_CLS_PTP2_L2_DREQ, + IONIC_PKT_CLS_PTP2_ALL = + IONIC_PKT_CLS_PTP2_L4_ALL | IONIC_PKT_CLS_PTP2_L2_ALL, + + IONIC_PKT_CLS_PTP_SYNC = + IONIC_PKT_CLS_PTP1_SYNC | IONIC_PKT_CLS_PTP2_SYNC, + IONIC_PKT_CLS_PTP_DREQ = + IONIC_PKT_CLS_PTP1_DREQ | IONIC_PKT_CLS_PTP2_DREQ, + IONIC_PKT_CLS_PTP_ALL = + IONIC_PKT_CLS_PTP1_ALL | IONIC_PKT_CLS_PTP2_ALL, +}; + +/** + * struct ionic_q_control_cmd - Queue control command + * @opcode: opcode + * @type: Queue type + * @lif_index: LIF index + * @index: Queue index + * @oper: Operation (enum ionic_q_control_oper) + */ +struct ionic_q_control_cmd { + u8 opcode; + u8 type; + __le16 lif_index; + __le32 index; + u8 oper; + u8 rsvd[55]; +}; + +typedef struct ionic_admin_comp ionic_q_control_comp; + +enum q_control_oper { + IONIC_Q_DISABLE = 0, + IONIC_Q_ENABLE = 1, + IONIC_Q_HANG_RESET = 2, +}; + +/** + * enum ionic_phy_type - Physical connection type + * @IONIC_PHY_TYPE_NONE: No PHY installed + * @IONIC_PHY_TYPE_COPPER: Copper PHY + * @IONIC_PHY_TYPE_FIBER: Fiber PHY + */ +enum ionic_phy_type { + IONIC_PHY_TYPE_NONE = 0, + IONIC_PHY_TYPE_COPPER = 1, + IONIC_PHY_TYPE_FIBER = 2, +}; + +/** + * enum ionic_xcvr_state - Transceiver status + * @IONIC_XCVR_STATE_REMOVED: Transceiver removed + * @IONIC_XCVR_STATE_INSERTED: Transceiver inserted + * @IONIC_XCVR_STATE_PENDING: Transceiver pending + * @IONIC_XCVR_STATE_SPROM_READ: Transceiver data read + * @IONIC_XCVR_STATE_SPROM_READ_ERR: Transceiver data read error + */ +enum ionic_xcvr_state { + IONIC_XCVR_STATE_REMOVED = 0, + IONIC_XCVR_STATE_INSERTED = 1, + IONIC_XCVR_STATE_PENDING = 2, + IONIC_XCVR_STATE_SPROM_READ = 3, + IONIC_XCVR_STATE_SPROM_READ_ERR = 4, +}; + +/** + * enum ionic_xcvr_pid - Supported link modes + */ +enum ionic_xcvr_pid { + IONIC_XCVR_PID_UNKNOWN = 0, + + /* CU */ + IONIC_XCVR_PID_QSFP_100G_CR4 = 1, + IONIC_XCVR_PID_QSFP_40GBASE_CR4 = 2, + IONIC_XCVR_PID_SFP_25GBASE_CR_S = 3, + IONIC_XCVR_PID_SFP_25GBASE_CR_L = 4, + IONIC_XCVR_PID_SFP_25GBASE_CR_N = 5, + + /* Fiber */ + IONIC_XCVR_PID_QSFP_100G_AOC = 50, + IONIC_XCVR_PID_QSFP_100G_ACC = 51, + IONIC_XCVR_PID_QSFP_100G_SR4 = 52, + IONIC_XCVR_PID_QSFP_100G_LR4 = 53, + IONIC_XCVR_PID_QSFP_100G_ER4 = 54, + IONIC_XCVR_PID_QSFP_40GBASE_ER4 = 55, + IONIC_XCVR_PID_QSFP_40GBASE_SR4 = 56, + IONIC_XCVR_PID_QSFP_40GBASE_LR4 = 57, + IONIC_XCVR_PID_QSFP_40GBASE_AOC = 58, + IONIC_XCVR_PID_SFP_25GBASE_SR = 59, + IONIC_XCVR_PID_SFP_25GBASE_LR = 60, + IONIC_XCVR_PID_SFP_25GBASE_ER = 61, + IONIC_XCVR_PID_SFP_25GBASE_AOC = 62, + IONIC_XCVR_PID_SFP_10GBASE_SR = 63, + IONIC_XCVR_PID_SFP_10GBASE_LR = 64, + IONIC_XCVR_PID_SFP_10GBASE_LRM = 65, + IONIC_XCVR_PID_SFP_10GBASE_ER = 66, + IONIC_XCVR_PID_SFP_10GBASE_AOC = 67, + IONIC_XCVR_PID_SFP_10GBASE_CU = 68, + IONIC_XCVR_PID_QSFP_100G_CWDM4 = 69, + IONIC_XCVR_PID_QSFP_100G_PSM4 = 70, + IONIC_XCVR_PID_SFP_25GBASE_ACC = 71, + IONIC_XCVR_PID_SFP_10GBASE_T = 72, + IONIC_XCVR_PID_SFP_1000BASE_T = 73, +}; + +/** + * enum ionic_port_type - Port types + * @IONIC_PORT_TYPE_NONE: Port type not configured + * @IONIC_PORT_TYPE_ETH: Port carries ethernet traffic (inband) + * @IONIC_PORT_TYPE_MGMT: Port carries mgmt traffic (out-of-band) + */ +enum ionic_port_type { + IONIC_PORT_TYPE_NONE = 0, + IONIC_PORT_TYPE_ETH = 1, + IONIC_PORT_TYPE_MGMT = 2, +}; + +/** + * enum ionic_port_admin_state - Port config state + * @IONIC_PORT_ADMIN_STATE_NONE: Port admin state not configured + * @IONIC_PORT_ADMIN_STATE_DOWN: Port admin disabled + * @IONIC_PORT_ADMIN_STATE_UP: Port admin enabled + */ +enum ionic_port_admin_state { + IONIC_PORT_ADMIN_STATE_NONE = 0, + IONIC_PORT_ADMIN_STATE_DOWN = 1, + IONIC_PORT_ADMIN_STATE_UP = 2, +}; + +/** + * enum ionic_port_oper_status - Port operational status + * @IONIC_PORT_OPER_STATUS_NONE: Port disabled + * @IONIC_PORT_OPER_STATUS_UP: Port link status up + * @IONIC_PORT_OPER_STATUS_DOWN: Port link status down + */ +enum ionic_port_oper_status { + IONIC_PORT_OPER_STATUS_NONE = 0, + IONIC_PORT_OPER_STATUS_UP = 1, + IONIC_PORT_OPER_STATUS_DOWN = 2, +}; + +/** + * enum ionic_port_fec_type - Ethernet Forward error correction (FEC) modes + * @IONIC_PORT_FEC_TYPE_NONE: FEC Disabled + * @IONIC_PORT_FEC_TYPE_FC: FireCode FEC + * @IONIC_PORT_FEC_TYPE_RS: ReedSolomon FEC + */ +enum ionic_port_fec_type { + IONIC_PORT_FEC_TYPE_NONE = 0, + IONIC_PORT_FEC_TYPE_FC = 1, + IONIC_PORT_FEC_TYPE_RS = 2, +}; + +/** + * enum ionic_port_pause_type - Ethernet pause (flow control) modes + * @IONIC_PORT_PAUSE_TYPE_NONE: Disable Pause + * @IONIC_PORT_PAUSE_TYPE_LINK: Link level pause + * @IONIC_PORT_PAUSE_TYPE_PFC: Priority-Flow Control + */ +enum ionic_port_pause_type { + IONIC_PORT_PAUSE_TYPE_NONE = 0, + IONIC_PORT_PAUSE_TYPE_LINK = 1, + IONIC_PORT_PAUSE_TYPE_PFC = 2, +}; + +/** + * enum ionic_port_loopback_mode - Loopback modes + * @IONIC_PORT_LOOPBACK_MODE_NONE: Disable loopback + * @IONIC_PORT_LOOPBACK_MODE_MAC: MAC loopback + * @IONIC_PORT_LOOPBACK_MODE_PHY: PHY/SerDes loopback + */ +enum ionic_port_loopback_mode { + IONIC_PORT_LOOPBACK_MODE_NONE = 0, + IONIC_PORT_LOOPBACK_MODE_MAC = 1, + IONIC_PORT_LOOPBACK_MODE_PHY = 2, +}; + +/** + * struct ionic_xcvr_status - Transceiver Status information + * @state: Transceiver status (enum ionic_xcvr_state) + * @phy: Physical connection type (enum ionic_phy_type) + * @pid: Transceiver link mode (enum ionic_xcvr_pid) + * @sprom: Transceiver sprom contents + */ +struct ionic_xcvr_status { + u8 state; + u8 phy; + __le16 pid; + u8 sprom[256]; +}; + +/** + * union ionic_port_config - Port configuration + * @speed: port speed (in Mbps) + * @mtu: mtu + * @state: port admin state (enum ionic_port_admin_state) + * @an_enable: autoneg enable + * @fec_type: fec type (enum ionic_port_fec_type) + * @pause_type: pause type (enum ionic_port_pause_type) + * @loopback_mode: loopback mode (enum ionic_port_loopback_mode) + */ +union ionic_port_config { + struct { +#define IONIC_SPEED_100G 100000 /* 100G in Mbps */ +#define IONIC_SPEED_50G 50000 /* 50G in Mbps */ +#define IONIC_SPEED_40G 40000 /* 40G in Mbps */ +#define IONIC_SPEED_25G 25000 /* 25G in Mbps */ +#define IONIC_SPEED_10G 10000 /* 10G in Mbps */ +#define IONIC_SPEED_1G 1000 /* 1G in Mbps */ + __le32 speed; + __le32 mtu; + u8 state; + u8 an_enable; + u8 fec_type; +#define IONIC_PAUSE_TYPE_MASK 0x0f +#define IONIC_PAUSE_FLAGS_MASK 0xf0 +#define IONIC_PAUSE_F_TX 0x10 +#define IONIC_PAUSE_F_RX 0x20 + u8 pause_type; + u8 loopback_mode; + }; + __le32 words[64]; +}; + +/** + * struct ionic_port_status - Port Status information + * @status: link status (enum ionic_port_oper_status) + * @id: port id + * @speed: link speed (in Mbps) + * @link_down_count: number of times link went from up to down + * @fec_type: fec type (enum ionic_port_fec_type) + * @xcvr: transceiver status + */ +struct ionic_port_status { + __le32 id; + __le32 speed; + u8 status; + __le16 link_down_count; + u8 fec_type; + u8 rsvd[48]; + struct ionic_xcvr_status xcvr; +} __packed; + +/** + * struct ionic_port_identify_cmd - Port identify command + * @opcode: opcode + * @index: port index + * @ver: Highest version of identify supported by driver + */ +struct ionic_port_identify_cmd { + u8 opcode; + u8 index; + u8 ver; + u8 rsvd[61]; +}; + +/** + * struct ionic_port_identify_comp - Port identify command completion + * @status: Status of the command (enum ionic_status_code) + * @ver: Version of identify returned by device + */ +struct ionic_port_identify_comp { + u8 status; + u8 ver; + u8 rsvd[14]; +}; + +/** + * struct ionic_port_init_cmd - Port initialization command + * @opcode: opcode + * @index: port index + * @info_pa: destination address for port info (struct ionic_port_info) + */ +struct ionic_port_init_cmd { + u8 opcode; + u8 index; + u8 rsvd[6]; + __le64 info_pa; + u8 rsvd2[48]; +}; + +/** + * struct ionic_port_init_comp - Port initialization command completion + * @status: Status of the command (enum ionic_status_code) + */ +struct ionic_port_init_comp { + u8 status; + u8 rsvd[15]; +}; + +/** + * struct ionic_port_reset_cmd - Port reset command + * @opcode: opcode + * @index: port index + */ +struct ionic_port_reset_cmd { + u8 opcode; + u8 index; + u8 rsvd[62]; +}; + +/** + * struct ionic_port_reset_comp - Port reset command completion + * @status: Status of the command (enum ionic_status_code) + */ +struct ionic_port_reset_comp { + u8 status; + u8 rsvd[15]; +}; + +/** + * enum ionic_stats_ctl_cmd - List of commands for stats control + * @IONIC_STATS_CTL_RESET: Reset statistics + */ +enum ionic_stats_ctl_cmd { + IONIC_STATS_CTL_RESET = 0, +}; + +/** + * enum ionic_txstamp_mode - List of TX Timestamping Modes + * @IONIC_TXSTAMP_OFF: Disable TX hardware timetamping. + * @IONIC_TXSTAMP_ON: Enable local TX hardware timetamping. + * @IONIC_TXSTAMP_ONESTEP_SYNC: Modify TX PTP Sync packets. + * @IONIC_TXSTAMP_ONESTEP_P2P: Modify TX PTP Sync and PDelayResp. + */ +enum ionic_txstamp_mode { + IONIC_TXSTAMP_OFF = 0, + IONIC_TXSTAMP_ON = 1, + IONIC_TXSTAMP_ONESTEP_SYNC = 2, + IONIC_TXSTAMP_ONESTEP_P2P = 3, +}; + +/** + * enum ionic_port_attr - List of device attributes + * @IONIC_PORT_ATTR_STATE: Port state attribute + * @IONIC_PORT_ATTR_SPEED: Port speed attribute + * @IONIC_PORT_ATTR_MTU: Port MTU attribute + * @IONIC_PORT_ATTR_AUTONEG: Port autonegotiation attribute + * @IONIC_PORT_ATTR_FEC: Port FEC attribute + * @IONIC_PORT_ATTR_PAUSE: Port pause attribute + * @IONIC_PORT_ATTR_LOOPBACK: Port loopback attribute + * @IONIC_PORT_ATTR_STATS_CTRL: Port statistics control attribute + */ +enum ionic_port_attr { + IONIC_PORT_ATTR_STATE = 0, + IONIC_PORT_ATTR_SPEED = 1, + IONIC_PORT_ATTR_MTU = 2, + IONIC_PORT_ATTR_AUTONEG = 3, + IONIC_PORT_ATTR_FEC = 4, + IONIC_PORT_ATTR_PAUSE = 5, + IONIC_PORT_ATTR_LOOPBACK = 6, + IONIC_PORT_ATTR_STATS_CTRL = 7, +}; + +/** + * struct ionic_port_setattr_cmd - Set port attributes on the NIC + * @opcode: Opcode + * @index: Port index + * @attr: Attribute type (enum ionic_port_attr) + * @state: Port state + * @speed: Port speed + * @mtu: Port MTU + * @an_enable: Port autonegotiation setting + * @fec_type: Port FEC type setting + * @pause_type: Port pause type setting + * @loopback_mode: Port loopback mode + * @stats_ctl: Port stats setting + */ +struct ionic_port_setattr_cmd { + u8 opcode; + u8 index; + u8 attr; + u8 rsvd; + union { + u8 state; + __le32 speed; + __le32 mtu; + u8 an_enable; + u8 fec_type; + u8 pause_type; + u8 loopback_mode; + u8 stats_ctl; + u8 rsvd2[60]; + }; +}; + +/** + * struct ionic_port_setattr_comp - Port set attr command completion + * @status: Status of the command (enum ionic_status_code) + * @color: Color bit + */ +struct ionic_port_setattr_comp { + u8 status; + u8 rsvd[14]; + u8 color; +}; + +/** + * struct ionic_port_getattr_cmd - Get port attributes from the NIC + * @opcode: Opcode + * @index: port index + * @attr: Attribute type (enum ionic_port_attr) + */ +struct ionic_port_getattr_cmd { + u8 opcode; + u8 index; + u8 attr; + u8 rsvd[61]; +}; + +/** + * struct ionic_port_getattr_comp - Port get attr command completion + * @status: Status of the command (enum ionic_status_code) + * @state: Port state + * @speed: Port speed + * @mtu: Port MTU + * @an_enable: Port autonegotiation setting + * @fec_type: Port FEC type setting + * @pause_type: Port pause type setting + * @loopback_mode: Port loopback mode + * @color: Color bit + */ +struct ionic_port_getattr_comp { + u8 status; + u8 rsvd[3]; + union { + u8 state; + __le32 speed; + __le32 mtu; + u8 an_enable; + u8 fec_type; + u8 pause_type; + u8 loopback_mode; + u8 rsvd2[11]; + } __packed; + u8 color; +}; + +/** + * struct ionic_lif_status - LIF status register + * @eid: most recent NotifyQ event id + * @port_num: port the LIF is connected to + * @link_status: port status (enum ionic_port_oper_status) + * @link_speed: speed of link in Mbps + * @link_down_count: number of times link went from up to down + */ +struct ionic_lif_status { + __le64 eid; + u8 port_num; + u8 rsvd; + __le16 link_status; + __le32 link_speed; /* units of 1Mbps: eg 10000 = 10Gbps */ + __le16 link_down_count; + u8 rsvd2[46]; +}; + +/** + * struct ionic_lif_reset_cmd - LIF reset command + * @opcode: opcode + * @index: LIF index + */ +struct ionic_lif_reset_cmd { + u8 opcode; + u8 rsvd; + __le16 index; + __le32 rsvd2[15]; +}; + +typedef struct ionic_admin_comp ionic_lif_reset_comp; + +enum ionic_dev_state { + IONIC_DEV_DISABLE = 0, + IONIC_DEV_ENABLE = 1, + IONIC_DEV_HANG_RESET = 2, +}; + +/** + * enum ionic_dev_attr - List of device attributes + * @IONIC_DEV_ATTR_STATE: Device state attribute + * @IONIC_DEV_ATTR_NAME: Device name attribute + * @IONIC_DEV_ATTR_FEATURES: Device feature attributes + */ +enum ionic_dev_attr { + IONIC_DEV_ATTR_STATE = 0, + IONIC_DEV_ATTR_NAME = 1, + IONIC_DEV_ATTR_FEATURES = 2, +}; + +/** + * struct ionic_dev_setattr_cmd - Set Device attributes on the NIC + * @opcode: Opcode + * @attr: Attribute type (enum ionic_dev_attr) + * @state: Device state (enum ionic_dev_state) + * @name: The bus info, e.g. PCI slot-device-function, 0 terminated + * @features: Device features + */ +struct ionic_dev_setattr_cmd { + u8 opcode; + u8 attr; + __le16 rsvd; + union { + u8 state; + char name[IONIC_IFNAMSIZ]; + __le64 features; + u8 rsvd2[60]; + } __packed; +}; + +/** + * struct ionic_dev_setattr_comp - Device set attr command completion + * @status: Status of the command (enum ionic_status_code) + * @features: Device features + * @color: Color bit + */ +struct ionic_dev_setattr_comp { + u8 status; + u8 rsvd[3]; + union { + __le64 features; + u8 rsvd2[11]; + } __packed; + u8 color; +}; + +/** + * struct ionic_dev_getattr_cmd - Get Device attributes from the NIC + * @opcode: opcode + * @attr: Attribute type (enum ionic_dev_attr) + */ +struct ionic_dev_getattr_cmd { + u8 opcode; + u8 attr; + u8 rsvd[62]; +}; + +/** + * struct ionic_dev_setattr_comp - Device set attr command completion + * @status: Status of the command (enum ionic_status_code) + * @features: Device features + * @color: Color bit + */ +struct ionic_dev_getattr_comp { + u8 status; + u8 rsvd[3]; + union { + __le64 features; + u8 rsvd2[11]; + } __packed; + u8 color; +}; + +/** + * RSS parameters + */ +#define IONIC_RSS_HASH_KEY_SIZE 40 + +enum ionic_rss_hash_types { + IONIC_RSS_TYPE_IPV4 = BIT(0), + IONIC_RSS_TYPE_IPV4_TCP = BIT(1), + IONIC_RSS_TYPE_IPV4_UDP = BIT(2), + IONIC_RSS_TYPE_IPV6 = BIT(3), + IONIC_RSS_TYPE_IPV6_TCP = BIT(4), + IONIC_RSS_TYPE_IPV6_UDP = BIT(5), +}; + +/** + * enum ionic_lif_attr - List of LIF attributes + * @IONIC_LIF_ATTR_STATE: LIF state attribute + * @IONIC_LIF_ATTR_NAME: LIF name attribute + * @IONIC_LIF_ATTR_MTU: LIF MTU attribute + * @IONIC_LIF_ATTR_MAC: LIF MAC attribute + * @IONIC_LIF_ATTR_FEATURES: LIF features attribute + * @IONIC_LIF_ATTR_RSS: LIF RSS attribute + * @IONIC_LIF_ATTR_STATS_CTRL: LIF statistics control attribute + * @IONIC_LIF_ATTR_TXSTAMP: LIF TX timestamping mode + */ +enum ionic_lif_attr { + IONIC_LIF_ATTR_STATE = 0, + IONIC_LIF_ATTR_NAME = 1, + IONIC_LIF_ATTR_MTU = 2, + IONIC_LIF_ATTR_MAC = 3, + IONIC_LIF_ATTR_FEATURES = 4, + IONIC_LIF_ATTR_RSS = 5, + IONIC_LIF_ATTR_STATS_CTRL = 6, + IONIC_LIF_ATTR_TXSTAMP = 7, +}; + +/** + * struct ionic_lif_setattr_cmd - Set LIF attributes on the NIC + * @opcode: Opcode + * @attr: Attribute type (enum ionic_lif_attr) + * @index: LIF index + * @state: LIF state (enum ionic_lif_state) + * @name: The netdev name string, 0 terminated + * @mtu: Mtu + * @mac: Station mac + * @features: Features (enum ionic_eth_hw_features) + * @rss: RSS properties + * @types: The hash types to enable (see rss_hash_types) + * @key: The hash secret key + * @addr: Address for the indirection table shared memory + * @stats_ctl: stats control commands (enum ionic_stats_ctl_cmd) + * @txstamp: TX Timestamping Mode (enum ionic_txstamp_mode) + */ +struct ionic_lif_setattr_cmd { + u8 opcode; + u8 attr; + __le16 index; + union { + u8 state; + char name[IONIC_IFNAMSIZ]; + __le32 mtu; + u8 mac[6]; + __le64 features; + struct { + __le16 types; + u8 key[IONIC_RSS_HASH_KEY_SIZE]; + u8 rsvd[6]; + __le64 addr; + } rss; + u8 stats_ctl; + __le16 txstamp_mode; + u8 rsvd[60]; + } __packed; +}; + +/** + * struct ionic_lif_setattr_comp - LIF set attr command completion + * @status: Status of the command (enum ionic_status_code) + * @comp_index: Index in the descriptor ring for which this is the completion + * @features: features (enum ionic_eth_hw_features) + * @color: Color bit + */ +struct ionic_lif_setattr_comp { + u8 status; + u8 rsvd; + __le16 comp_index; + union { + __le64 features; + u8 rsvd2[11]; + } __packed; + u8 color; +}; + +/** + * struct ionic_lif_getattr_cmd - Get LIF attributes from the NIC + * @opcode: Opcode + * @attr: Attribute type (enum ionic_lif_attr) + * @index: LIF index + */ +struct ionic_lif_getattr_cmd { + u8 opcode; + u8 attr; + __le16 index; + u8 rsvd[60]; +}; + +/** + * struct ionic_lif_getattr_comp - LIF get attr command completion + * @status: Status of the command (enum ionic_status_code) + * @comp_index: Index in the descriptor ring for which this is the completion + * @state: LIF state (enum ionic_lif_state) + * @name: The netdev name string, 0 terminated + * @mtu: Mtu + * @mac: Station mac + * @features: Features (enum ionic_eth_hw_features) + * @txstamp: TX Timestamping Mode (enum ionic_txstamp_mode) + * @color: Color bit + */ +struct ionic_lif_getattr_comp { + u8 status; + u8 rsvd; + __le16 comp_index; + union { + u8 state; + __le32 mtu; + u8 mac[6]; + __le64 features; + __le16 txstamp_mode; + u8 rsvd2[11]; + } __packed; + u8 color; +}; + +/** + * struct ionic_lif_setphc_cmd - Set LIF PTP Hardware Clock + * @opcode: Opcode + * @lif_index: LIF index + * @tick: Hardware stamp tick of an instant in time. + * @nsec: Nanosecond stamp of the same instant. + * @frac: Fractional nanoseconds at the same instant. + * @mult: Cycle to nanosecond multiplier. + * @shift: Cycle to nanosecond divisor (power of two). + */ +struct ionic_lif_setphc_cmd { + u8 opcode; + u8 rsvd1; + __le16 lif_index; + u8 rsvd2[4]; + __le64 tick; + __le64 nsec; + __le64 frac; + __le32 mult; + __le32 shift; + u8 rsvd3[24]; +}; + +enum ionic_rx_mode { + IONIC_RX_MODE_F_UNICAST = BIT(0), + IONIC_RX_MODE_F_MULTICAST = BIT(1), + IONIC_RX_MODE_F_BROADCAST = BIT(2), + IONIC_RX_MODE_F_PROMISC = BIT(3), + IONIC_RX_MODE_F_ALLMULTI = BIT(4), + IONIC_RX_MODE_F_RDMA_SNIFFER = BIT(5), +}; + +/** + * struct ionic_rx_mode_set_cmd - Set LIF's Rx mode command + * @opcode: opcode + * @lif_index: LIF index + * @rx_mode: Rx mode flags: + * IONIC_RX_MODE_F_UNICAST: Accept known unicast packets + * IONIC_RX_MODE_F_MULTICAST: Accept known multicast packets + * IONIC_RX_MODE_F_BROADCAST: Accept broadcast packets + * IONIC_RX_MODE_F_PROMISC: Accept any packets + * IONIC_RX_MODE_F_ALLMULTI: Accept any multicast packets + * IONIC_RX_MODE_F_RDMA_SNIFFER: Sniff RDMA packets + */ +struct ionic_rx_mode_set_cmd { + u8 opcode; + u8 rsvd; + __le16 lif_index; + __le16 rx_mode; + __le16 rsvd2[29]; +}; + +typedef struct ionic_admin_comp ionic_rx_mode_set_comp; + +enum ionic_rx_filter_match_type { + IONIC_RX_FILTER_MATCH_VLAN = 0x0, + IONIC_RX_FILTER_MATCH_MAC = 0x1, + IONIC_RX_FILTER_MATCH_MAC_VLAN = 0x2, + IONIC_RX_FILTER_STEER_PKTCLASS = 0x10, +}; + +/** + * struct ionic_rx_filter_add_cmd - Add LIF Rx filter command + * @opcode: opcode + * @qtype: Queue type + * @lif_index: LIF index + * @qid: Queue ID + * @match: Rx filter match type (see IONIC_RX_FILTER_MATCH_xxx) + * @vlan: VLAN filter + * @vlan: VLAN ID + * @mac: MAC filter + * @addr: MAC address (network-byte order) + * @mac_vlan: MACVLAN filter + * @vlan: VLAN ID + * @addr: MAC address (network-byte order) + * @pkt_class: Packet classification filter + */ +struct ionic_rx_filter_add_cmd { + u8 opcode; + u8 qtype; + __le16 lif_index; + __le32 qid; + __le16 match; + union { + struct { + __le16 vlan; + } vlan; + struct { + u8 addr[6]; + } mac; + struct { + __le16 vlan; + u8 addr[6]; + } mac_vlan; + __le64 pkt_class; + u8 rsvd[54]; + } __packed; +}; + +/** + * struct ionic_rx_filter_add_comp - Add LIF Rx filter command completion + * @status: Status of the command (enum ionic_status_code) + * @comp_index: Index in the descriptor ring for which this is the completion + * @filter_id: Filter ID + * @color: Color bit + */ +struct ionic_rx_filter_add_comp { + u8 status; + u8 rsvd; + __le16 comp_index; + __le32 filter_id; + u8 rsvd2[7]; + u8 color; +}; + +/** + * struct ionic_rx_filter_del_cmd - Delete LIF Rx filter command + * @opcode: opcode + * @lif_index: LIF index + * @filter_id: Filter ID + */ +struct ionic_rx_filter_del_cmd { + u8 opcode; + u8 rsvd; + __le16 lif_index; + __le32 filter_id; + u8 rsvd2[56]; +}; + +typedef struct ionic_admin_comp ionic_rx_filter_del_comp; + +enum ionic_vf_attr { + IONIC_VF_ATTR_SPOOFCHK = 1, + IONIC_VF_ATTR_TRUST = 2, + IONIC_VF_ATTR_MAC = 3, + IONIC_VF_ATTR_LINKSTATE = 4, + IONIC_VF_ATTR_VLAN = 5, + IONIC_VF_ATTR_RATE = 6, + IONIC_VF_ATTR_STATSADDR = 7, +}; + +/** + * enum ionic_vf_link_status - Virtual Function link status + * @IONIC_VF_LINK_STATUS_AUTO: Use link state of the uplink + * @IONIC_VF_LINK_STATUS_UP: Link always up + * @IONIC_VF_LINK_STATUS_DOWN: Link always down + */ +enum ionic_vf_link_status { + IONIC_VF_LINK_STATUS_AUTO = 0, + IONIC_VF_LINK_STATUS_UP = 1, + IONIC_VF_LINK_STATUS_DOWN = 2, +}; + +/** + * struct ionic_vf_setattr_cmd - Set VF attributes on the NIC + * @opcode: Opcode + * @attr: Attribute type (enum ionic_vf_attr) + * @vf_index: VF index + * @macaddr: mac address + * @vlanid: vlan ID + * @maxrate: max Tx rate in Mbps + * @spoofchk: enable address spoof checking + * @trust: enable VF trust + * @linkstate: set link up or down + * @stats_pa: set DMA address for VF stats + */ +struct ionic_vf_setattr_cmd { + u8 opcode; + u8 attr; + __le16 vf_index; + union { + u8 macaddr[6]; + __le16 vlanid; + __le32 maxrate; + u8 spoofchk; + u8 trust; + u8 linkstate; + __le64 stats_pa; + u8 pad[60]; + } __packed; +}; + +struct ionic_vf_setattr_comp { + u8 status; + u8 attr; + __le16 vf_index; + __le16 comp_index; + u8 rsvd[9]; + u8 color; +}; + +/** + * struct ionic_vf_getattr_cmd - Get VF attributes from the NIC + * @opcode: Opcode + * @attr: Attribute type (enum ionic_vf_attr) + * @vf_index: VF index + */ +struct ionic_vf_getattr_cmd { + u8 opcode; + u8 attr; + __le16 vf_index; + u8 rsvd[60]; +}; + +struct ionic_vf_getattr_comp { + u8 status; + u8 attr; + __le16 vf_index; + union { + u8 macaddr[6]; + __le16 vlanid; + __le32 maxrate; + u8 spoofchk; + u8 trust; + u8 linkstate; + __le64 stats_pa; + u8 pad[11]; + } __packed; + u8 color; +}; + +/** + * struct ionic_qos_identify_cmd - QoS identify command + * @opcode: opcode + * @ver: Highest version of identify supported by driver + * + */ +struct ionic_qos_identify_cmd { + u8 opcode; + u8 ver; + u8 rsvd[62]; +}; + +/** + * struct ionic_qos_identify_comp - QoS identify command completion + * @status: Status of the command (enum ionic_status_code) + * @ver: Version of identify returned by device + */ +struct ionic_qos_identify_comp { + u8 status; + u8 ver; + u8 rsvd[14]; +}; + +#define IONIC_QOS_TC_MAX 8 +#define IONIC_QOS_ALL_TC 0xFF +/* Capri max supported, should be renamed. */ +#define IONIC_QOS_CLASS_MAX 7 +#define IONIC_QOS_PCP_MAX 8 +#define IONIC_QOS_CLASS_NAME_SZ 32 +#define IONIC_QOS_DSCP_MAX 64 +#define IONIC_QOS_ALL_PCP 0xFF +#define IONIC_DSCP_BLOCK_SIZE 8 + +/** + * enum ionic_qos_class + */ +enum ionic_qos_class { + IONIC_QOS_CLASS_DEFAULT = 0, + IONIC_QOS_CLASS_USER_DEFINED_1 = 1, + IONIC_QOS_CLASS_USER_DEFINED_2 = 2, + IONIC_QOS_CLASS_USER_DEFINED_3 = 3, + IONIC_QOS_CLASS_USER_DEFINED_4 = 4, + IONIC_QOS_CLASS_USER_DEFINED_5 = 5, + IONIC_QOS_CLASS_USER_DEFINED_6 = 6, +}; + +/** + * enum ionic_qos_class_type - Traffic classification criteria + * @IONIC_QOS_CLASS_TYPE_NONE: No QoS + * @IONIC_QOS_CLASS_TYPE_PCP: Dot1Q PCP + * @IONIC_QOS_CLASS_TYPE_DSCP: IP DSCP + */ +enum ionic_qos_class_type { + IONIC_QOS_CLASS_TYPE_NONE = 0, + IONIC_QOS_CLASS_TYPE_PCP = 1, + IONIC_QOS_CLASS_TYPE_DSCP = 2, +}; + +/** + * enum ionic_qos_sched_type - QoS class scheduling type + * @IONIC_QOS_SCHED_TYPE_STRICT: Strict priority + * @IONIC_QOS_SCHED_TYPE_DWRR: Deficit weighted round-robin + */ +enum ionic_qos_sched_type { + IONIC_QOS_SCHED_TYPE_STRICT = 0, + IONIC_QOS_SCHED_TYPE_DWRR = 1, +}; + +/** + * union ionic_qos_config - QoS configuration structure + * @flags: Configuration flags + * IONIC_QOS_CONFIG_F_ENABLE enable + * IONIC_QOS_CONFIG_F_NO_DROP drop/nodrop + * IONIC_QOS_CONFIG_F_RW_DOT1Q_PCP enable dot1q pcp rewrite + * IONIC_QOS_CONFIG_F_RW_IP_DSCP enable ip dscp rewrite + * IONIC_QOS_CONFIG_F_NON_DISRUPTIVE Non-disruptive TC update + * @sched_type: QoS class scheduling type (enum ionic_qos_sched_type) + * @class_type: QoS class type (enum ionic_qos_class_type) + * @pause_type: QoS pause type (enum ionic_qos_pause_type) + * @name: QoS class name + * @mtu: MTU of the class + * @pfc_cos: Priority-Flow Control class of service + * @dwrr_weight: QoS class scheduling weight + * @strict_rlmt: Rate limit for strict priority scheduling + * @rw_dot1q_pcp: Rewrite dot1q pcp to value (valid iff F_RW_DOT1Q_PCP) + * @rw_ip_dscp: Rewrite ip dscp to value (valid iff F_RW_IP_DSCP) + * @dot1q_pcp: Dot1q pcp value + * @ndscp: Number of valid dscp values in the ip_dscp field + * @ip_dscp: IP dscp values + */ +union ionic_qos_config { + struct { +#define IONIC_QOS_CONFIG_F_ENABLE BIT(0) +#define IONIC_QOS_CONFIG_F_NO_DROP BIT(1) +/* Used to rewrite PCP or DSCP value. */ +#define IONIC_QOS_CONFIG_F_RW_DOT1Q_PCP BIT(2) +#define IONIC_QOS_CONFIG_F_RW_IP_DSCP BIT(3) +/* Non-disruptive TC update */ +#define IONIC_QOS_CONFIG_F_NON_DISRUPTIVE BIT(4) + u8 flags; + u8 sched_type; + u8 class_type; + u8 pause_type; + char name[IONIC_QOS_CLASS_NAME_SZ]; + __le32 mtu; + /* flow control */ + u8 pfc_cos; + /* scheduler */ + union { + u8 dwrr_weight; + __le64 strict_rlmt; + }; + /* marking */ + /* Used to rewrite PCP or DSCP value. */ + union { + u8 rw_dot1q_pcp; + u8 rw_ip_dscp; + }; + /* classification */ + union { + u8 dot1q_pcp; + struct { + u8 ndscp; + u8 ip_dscp[IONIC_QOS_DSCP_MAX]; + }; + }; + }; + __le32 words[64]; +}; + +/** + * union ionic_qos_identity - QoS identity structure + * @version: Version of the identify structure + * @type: QoS system type + * @nclasses: Number of usable QoS classes + * @config: Current configuration of classes + */ +union ionic_qos_identity { + struct { + u8 version; + u8 type; + u8 rsvd[62]; + union ionic_qos_config config[IONIC_QOS_CLASS_MAX]; + }; + __le32 words[478]; +}; + +/** + * struct ionic_qos_init_cmd - QoS config init command + * @opcode: Opcode + * @group: QoS class id + * @info_pa: destination address for qos info + */ +struct ionic_qos_init_cmd { + u8 opcode; + u8 group; + u8 rsvd[6]; + __le64 info_pa; + u8 rsvd1[48]; +}; + +typedef struct ionic_admin_comp ionic_qos_init_comp; + +/** + * struct ionic_qos_reset_cmd - QoS config reset command + * @opcode: Opcode + * @group: QoS class id + */ +struct ionic_qos_reset_cmd { + u8 opcode; + u8 group; + u8 rsvd[62]; +}; + +/** + * struct ionic_qos_clear_port_stats_cmd - Qos config reset command + * @opcode: Opcode + */ +struct ionic_qos_clear_stats_cmd { + u8 opcode; + u8 group_bitmap; + u8 rsvd[62]; +}; + +typedef struct ionic_admin_comp ionic_qos_reset_comp; + +/** + * struct ionic_fw_download_cmd - Firmware download command + * @opcode: opcode + * @addr: dma address of the firmware buffer + * @offset: offset of the firmware buffer within the full image + * @length: number of valid bytes in the firmware buffer + */ +struct ionic_fw_download_cmd { + u8 opcode; + u8 rsvd[3]; + __le32 offset; + __le64 addr; + __le32 length; +}; + +typedef struct ionic_admin_comp ionic_fw_download_comp; + +/** + * enum ionic_fw_control_oper - FW control operations + * @IONIC_FW_RESET: Reset firmware + * @IONIC_FW_INSTALL: Install firmware + * @IONIC_FW_ACTIVATE: Activate firmware + * @IONIC_FW_INSTALL_ASYNC: Install firmware asynchronously + * @IONIC_FW_INSTALL_STATUS: Firmware installation status + * @IONIC_FW_ACTIVATE_ASYNC: Activate firmware asynchronously + * @IONIC_FW_ACTIVATE_STATUS: Firmware activate status + */ +enum ionic_fw_control_oper { + IONIC_FW_RESET = 0, + IONIC_FW_INSTALL = 1, + IONIC_FW_ACTIVATE = 2, + IONIC_FW_INSTALL_ASYNC = 3, + IONIC_FW_INSTALL_STATUS = 4, + IONIC_FW_ACTIVATE_ASYNC = 5, + IONIC_FW_ACTIVATE_STATUS = 6, + IONIC_FW_UPDATE_CLEANUP = 7, +}; + +/** + * struct ionic_fw_control_cmd - Firmware control command + * @opcode: opcode + * @oper: firmware control operation (enum ionic_fw_control_oper) + * @slot: slot to activate + */ +struct ionic_fw_control_cmd { + u8 opcode; + u8 rsvd[3]; + u8 oper; + u8 slot; + u8 rsvd1[58]; +}; + +/** + * struct ionic_fw_control_comp - Firmware control copletion + * @status: Status of the command (enum ionic_status_code) + * @comp_index: Index in the descriptor ring for which this is the completion + * @slot: Slot where the firmware was installed + * @color: Color bit + */ +struct ionic_fw_control_comp { + u8 status; + u8 rsvd; + __le16 comp_index; + u8 slot; + u8 rsvd1[10]; + u8 color; +}; + +/****************************************************************** + ******************* RDMA Commands ******************************** + ******************************************************************/ + +/** + * struct ionic_rdma_reset_cmd - Reset RDMA LIF cmd + * @opcode: opcode + * @lif_index: LIF index + * + * There is no RDMA specific dev command completion struct. Completion uses + * the common struct ionic_admin_comp. Only the status is indicated. + * Nonzero status means the LIF does not support RDMA. + **/ +struct ionic_rdma_reset_cmd { + u8 opcode; + u8 rsvd; + __le16 lif_index; + u8 rsvd2[60]; +}; + +/** + * struct ionic_rdma_queue_cmd - Create RDMA Queue command + * @opcode: opcode, 52, 53 + * @lif_index: LIF index + * @qid_ver: (qid | (RDMA version << 24)) + * @cid: intr, eq_id, or cq_id + * @dbid: doorbell page id + * @depth_log2: log base two of queue depth + * @stride_log2: log base two of queue stride + * @dma_addr: address of the queue memory + * + * The same command struct is used to create an RDMA event queue, completion + * queue, or RDMA admin queue. The cid is an interrupt number for an event + * queue, an event queue id for a completion queue, or a completion queue id + * for an RDMA admin queue. + * + * The queue created via a dev command must be contiguous in dma space. + * + * The dev commands are intended only to be used during driver initialization, + * to create queues supporting the RDMA admin queue. Other queues, and other + * types of RDMA resources like memory regions, will be created and registered + * via the RDMA admin queue, and will support a more complete interface + * providing scatter gather lists for larger, scattered queue buffers and + * memory registration. + * + * There is no RDMA specific dev command completion struct. Completion uses + * the common struct ionic_admin_comp. Only the status is indicated. + **/ +struct ionic_rdma_queue_cmd { + u8 opcode; + u8 rsvd; + __le16 lif_index; + __le32 qid_ver; + __le32 cid; + __le16 dbid; + u8 depth_log2; + u8 stride_log2; + __le64 dma_addr; + u8 rsvd2[40]; +}; + +/****************************************************************** + ******************* Notify Events ******************************** + ******************************************************************/ + +/** + * struct ionic_notifyq_event - Generic event reporting structure + * @eid: event number + * @ecode: event code + * @data: unspecified data about the event + * + * This is the generic event report struct from which the other + * actual events will be formed. + */ +struct ionic_notifyq_event { + __le64 eid; + __le16 ecode; + u8 data[54]; +}; + +/** + * struct ionic_link_change_event - Link change event notification + * @eid: event number + * @ecode: event code = IONIC_EVENT_LINK_CHANGE + * @link_status: link up/down, with error bits (enum ionic_port_status) + * @link_speed: speed of the network link + * + * Sent when the network link state changes between UP and DOWN + */ +struct ionic_link_change_event { + __le64 eid; + __le16 ecode; + __le16 link_status; + __le32 link_speed; /* units of 1Mbps: e.g. 10000 = 10Gbps */ + u8 rsvd[48]; +}; + +/** + * struct ionic_reset_event - Reset event notification + * @eid: event number + * @ecode: event code = IONIC_EVENT_RESET + * @reset_code: reset type + * @state: 0=pending, 1=complete, 2=error + * + * Sent when the NIC or some subsystem is going to be or + * has been reset. + */ +struct ionic_reset_event { + __le64 eid; + __le16 ecode; + u8 reset_code; + u8 state; + u8 rsvd[52]; +}; + +/** + * struct ionic_heartbeat_event - Sent periodically by NIC to indicate health + * @eid: event number + * @ecode: event code = IONIC_EVENT_HEARTBEAT + */ +struct ionic_heartbeat_event { + __le64 eid; + __le16 ecode; + u8 rsvd[54]; +}; + +/** + * struct ionic_log_event - Sent to notify the driver of an internal error + * @eid: event number + * @ecode: event code = IONIC_EVENT_LOG + * @data: log data + */ +struct ionic_log_event { + __le64 eid; + __le16 ecode; + u8 data[54]; +}; + +/** + * struct ionic_xcvr_event - Transceiver change event + * @eid: event number + * @ecode: event code = IONIC_EVENT_XCVR + */ +struct ionic_xcvr_event { + __le64 eid; + __le16 ecode; + u8 rsvd[54]; +}; + +/** + * struct ionic_port_stats - Port statistics structure + */ +struct ionic_port_stats { + __le64 frames_rx_ok; + __le64 frames_rx_all; + __le64 frames_rx_bad_fcs; + __le64 frames_rx_bad_all; + __le64 octets_rx_ok; + __le64 octets_rx_all; + __le64 frames_rx_unicast; + __le64 frames_rx_multicast; + __le64 frames_rx_broadcast; + __le64 frames_rx_pause; + __le64 frames_rx_bad_length; + __le64 frames_rx_undersized; + __le64 frames_rx_oversized; + __le64 frames_rx_fragments; + __le64 frames_rx_jabber; + __le64 frames_rx_pripause; + __le64 frames_rx_stomped_crc; + __le64 frames_rx_too_long; + __le64 frames_rx_vlan_good; + __le64 frames_rx_dropped; + __le64 frames_rx_less_than_64b; + __le64 frames_rx_64b; + __le64 frames_rx_65b_127b; + __le64 frames_rx_128b_255b; + __le64 frames_rx_256b_511b; + __le64 frames_rx_512b_1023b; + __le64 frames_rx_1024b_1518b; + __le64 frames_rx_1519b_2047b; + __le64 frames_rx_2048b_4095b; + __le64 frames_rx_4096b_8191b; + __le64 frames_rx_8192b_9215b; + __le64 frames_rx_other; + __le64 frames_tx_ok; + __le64 frames_tx_all; + __le64 frames_tx_bad; + __le64 octets_tx_ok; + __le64 octets_tx_total; + __le64 frames_tx_unicast; + __le64 frames_tx_multicast; + __le64 frames_tx_broadcast; + __le64 frames_tx_pause; + __le64 frames_tx_pripause; + __le64 frames_tx_vlan; + __le64 frames_tx_less_than_64b; + __le64 frames_tx_64b; + __le64 frames_tx_65b_127b; + __le64 frames_tx_128b_255b; + __le64 frames_tx_256b_511b; + __le64 frames_tx_512b_1023b; + __le64 frames_tx_1024b_1518b; + __le64 frames_tx_1519b_2047b; + __le64 frames_tx_2048b_4095b; + __le64 frames_tx_4096b_8191b; + __le64 frames_tx_8192b_9215b; + __le64 frames_tx_other; + __le64 frames_tx_pri_0; + __le64 frames_tx_pri_1; + __le64 frames_tx_pri_2; + __le64 frames_tx_pri_3; + __le64 frames_tx_pri_4; + __le64 frames_tx_pri_5; + __le64 frames_tx_pri_6; + __le64 frames_tx_pri_7; + __le64 frames_rx_pri_0; + __le64 frames_rx_pri_1; + __le64 frames_rx_pri_2; + __le64 frames_rx_pri_3; + __le64 frames_rx_pri_4; + __le64 frames_rx_pri_5; + __le64 frames_rx_pri_6; + __le64 frames_rx_pri_7; + __le64 tx_pripause_0_1us_count; + __le64 tx_pripause_1_1us_count; + __le64 tx_pripause_2_1us_count; + __le64 tx_pripause_3_1us_count; + __le64 tx_pripause_4_1us_count; + __le64 tx_pripause_5_1us_count; + __le64 tx_pripause_6_1us_count; + __le64 tx_pripause_7_1us_count; + __le64 rx_pripause_0_1us_count; + __le64 rx_pripause_1_1us_count; + __le64 rx_pripause_2_1us_count; + __le64 rx_pripause_3_1us_count; + __le64 rx_pripause_4_1us_count; + __le64 rx_pripause_5_1us_count; + __le64 rx_pripause_6_1us_count; + __le64 rx_pripause_7_1us_count; + __le64 rx_pause_1us_count; + __le64 frames_tx_truncated; +}; + +struct ionic_mgmt_port_stats { + __le64 frames_rx_ok; + __le64 frames_rx_all; + __le64 frames_rx_bad_fcs; + __le64 frames_rx_bad_all; + __le64 octets_rx_ok; + __le64 octets_rx_all; + __le64 frames_rx_unicast; + __le64 frames_rx_multicast; + __le64 frames_rx_broadcast; + __le64 frames_rx_pause; + __le64 frames_rx_bad_length; + __le64 frames_rx_undersized; + __le64 frames_rx_oversized; + __le64 frames_rx_fragments; + __le64 frames_rx_jabber; + __le64 frames_rx_64b; + __le64 frames_rx_65b_127b; + __le64 frames_rx_128b_255b; + __le64 frames_rx_256b_511b; + __le64 frames_rx_512b_1023b; + __le64 frames_rx_1024b_1518b; + __le64 frames_rx_gt_1518b; + __le64 frames_rx_fifo_full; + __le64 frames_tx_ok; + __le64 frames_tx_all; + __le64 frames_tx_bad; + __le64 octets_tx_ok; + __le64 octets_tx_total; + __le64 frames_tx_unicast; + __le64 frames_tx_multicast; + __le64 frames_tx_broadcast; + __le64 frames_tx_pause; +}; + +enum ionic_pb_buffer_drop_stats { + IONIC_BUFFER_INTRINSIC_DROP = 0, + IONIC_BUFFER_DISCARDED, + IONIC_BUFFER_ADMITTED, + IONIC_BUFFER_OUT_OF_CELLS_DROP, + IONIC_BUFFER_OUT_OF_CELLS_DROP_2, + IONIC_BUFFER_OUT_OF_CREDIT_DROP, + IONIC_BUFFER_TRUNCATION_DROP, + IONIC_BUFFER_PORT_DISABLED_DROP, + IONIC_BUFFER_COPY_TO_CPU_TAIL_DROP, + IONIC_BUFFER_SPAN_TAIL_DROP, + IONIC_BUFFER_MIN_SIZE_VIOLATION_DROP, + IONIC_BUFFER_ENQUEUE_ERROR_DROP, + IONIC_BUFFER_INVALID_PORT_DROP, + IONIC_BUFFER_INVALID_OUTPUT_QUEUE_DROP, + IONIC_BUFFER_DROP_MAX, +}; + +enum ionic_oflow_drop_stats { + IONIC_OFLOW_OCCUPANCY_DROP, + IONIC_OFLOW_EMERGENCY_STOP_DROP, + IONIC_OFLOW_WRITE_BUFFER_ACK_FILL_UP_DROP, + IONIC_OFLOW_WRITE_BUFFER_ACK_FULL_DROP, + IONIC_OFLOW_WRITE_BUFFER_FULL_DROP, + IONIC_OFLOW_CONTROL_FIFO_FULL_DROP, + IONIC_OFLOW_DROP_MAX, +}; + +/** + * struct port_pb_stats - packet buffers system stats + * uses ionic_pb_buffer_drop_stats for drop_counts[] + */ +struct ionic_port_pb_stats { + __le64 sop_count_in; + __le64 eop_count_in; + __le64 sop_count_out; + __le64 eop_count_out; + __le64 drop_counts[IONIC_BUFFER_DROP_MAX]; + __le64 input_queue_buffer_occupancy[IONIC_QOS_TC_MAX]; + __le64 input_queue_port_monitor[IONIC_QOS_TC_MAX]; + __le64 output_queue_port_monitor[IONIC_QOS_TC_MAX]; + __le64 oflow_drop_counts[IONIC_OFLOW_DROP_MAX]; + __le64 input_queue_good_pkts_in[IONIC_QOS_TC_MAX]; + __le64 input_queue_good_pkts_out[IONIC_QOS_TC_MAX]; + __le64 input_queue_err_pkts_in[IONIC_QOS_TC_MAX]; + __le64 input_queue_fifo_depth[IONIC_QOS_TC_MAX]; + __le64 input_queue_max_fifo_depth[IONIC_QOS_TC_MAX]; + __le64 input_queue_peak_occupancy[IONIC_QOS_TC_MAX]; + __le64 output_queue_buffer_occupancy[IONIC_QOS_TC_MAX]; +}; + +/** + * struct ionic_port_identity - port identity structure + * @version: identity structure version + * @type: type of port (enum ionic_port_type) + * @num_lanes: number of lanes for the port + * @autoneg: autoneg supported + * @min_frame_size: minimum frame size supported + * @max_frame_size: maximum frame size supported + * @fec_type: supported fec types + * @pause_type: supported pause types + * @loopback_mode: supported loopback mode + * @speeds: supported speeds + * @config: current port configuration + */ +union ionic_port_identity { + struct { + u8 version; + u8 type; + u8 num_lanes; + u8 autoneg; + __le32 min_frame_size; + __le32 max_frame_size; + u8 fec_type[4]; + u8 pause_type[2]; + u8 loopback_mode[2]; + __le32 speeds[16]; + u8 rsvd2[44]; + union ionic_port_config config; + }; + __le32 words[478]; +}; + +/** + * struct ionic_port_info - port info structure + * @config: Port configuration data + * @status: Port status data + * @stats: Port statistics data + * @mgmt_stats: Port management statistics data + * @port_pb_drop_stats: uplink pb drop stats + */ +struct ionic_port_info { + union ionic_port_config config; + struct ionic_port_status status; + union { + struct ionic_port_stats stats; + struct ionic_mgmt_port_stats mgmt_stats; + }; + /* room for pb_stats to start at 2k offset */ + u8 rsvd[760]; + struct ionic_port_pb_stats pb_stats; +}; + +/** + * struct ionic_lif_stats - LIF statistics structure + */ +struct ionic_lif_stats { + /* RX */ + __le64 rx_ucast_bytes; + __le64 rx_ucast_packets; + __le64 rx_mcast_bytes; + __le64 rx_mcast_packets; + __le64 rx_bcast_bytes; + __le64 rx_bcast_packets; + __le64 rsvd0; + __le64 rsvd1; + /* RX drops */ + __le64 rx_ucast_drop_bytes; + __le64 rx_ucast_drop_packets; + __le64 rx_mcast_drop_bytes; + __le64 rx_mcast_drop_packets; + __le64 rx_bcast_drop_bytes; + __le64 rx_bcast_drop_packets; + __le64 rx_dma_error; + __le64 rsvd2; + /* TX */ + __le64 tx_ucast_bytes; + __le64 tx_ucast_packets; + __le64 tx_mcast_bytes; + __le64 tx_mcast_packets; + __le64 tx_bcast_bytes; + __le64 tx_bcast_packets; + __le64 rsvd3; + __le64 rsvd4; + /* TX drops */ + __le64 tx_ucast_drop_bytes; + __le64 tx_ucast_drop_packets; + __le64 tx_mcast_drop_bytes; + __le64 tx_mcast_drop_packets; + __le64 tx_bcast_drop_bytes; + __le64 tx_bcast_drop_packets; + __le64 tx_dma_error; + __le64 rsvd5; + /* Rx Queue/Ring drops */ + __le64 rx_queue_disabled; + __le64 rx_queue_empty; + __le64 rx_queue_error; + __le64 rx_desc_fetch_error; + __le64 rx_desc_data_error; + __le64 rsvd6; + __le64 rsvd7; + __le64 rsvd8; + /* Tx Queue/Ring drops */ + __le64 tx_queue_disabled; + __le64 tx_queue_error; + __le64 tx_desc_fetch_error; + __le64 tx_desc_data_error; + __le64 tx_queue_empty; + __le64 rsvd10; + __le64 rsvd11; + __le64 rsvd12; + + /* RDMA/ROCE TX */ + __le64 tx_rdma_ucast_bytes; + __le64 tx_rdma_ucast_packets; + __le64 tx_rdma_mcast_bytes; + __le64 tx_rdma_mcast_packets; + __le64 tx_rdma_cnp_packets; + __le64 rsvd13; + __le64 rsvd14; + __le64 rsvd15; + + /* RDMA/ROCE RX */ + __le64 rx_rdma_ucast_bytes; + __le64 rx_rdma_ucast_packets; + __le64 rx_rdma_mcast_bytes; + __le64 rx_rdma_mcast_packets; + __le64 rx_rdma_cnp_packets; + __le64 rx_rdma_ecn_packets; + __le64 rsvd16; + __le64 rsvd17; + + __le64 rsvd18; + __le64 rsvd19; + __le64 rsvd20; + __le64 rsvd21; + __le64 rsvd22; + __le64 rsvd23; + __le64 rsvd24; + __le64 rsvd25; + + __le64 rsvd26; + __le64 rsvd27; + __le64 rsvd28; + __le64 rsvd29; + __le64 rsvd30; + __le64 rsvd31; + __le64 rsvd32; + __le64 rsvd33; + + __le64 rsvd34; + __le64 rsvd35; + __le64 rsvd36; + __le64 rsvd37; + __le64 rsvd38; + __le64 rsvd39; + __le64 rsvd40; + __le64 rsvd41; + + __le64 rsvd42; + __le64 rsvd43; + __le64 rsvd44; + __le64 rsvd45; + __le64 rsvd46; + __le64 rsvd47; + __le64 rsvd48; + __le64 rsvd49; + + /* RDMA/ROCE REQ Error/Debugs (768 - 895) */ + __le64 rdma_req_rx_pkt_seq_err; + __le64 rdma_req_rx_rnr_retry_err; + __le64 rdma_req_rx_remote_access_err; + __le64 rdma_req_rx_remote_inv_req_err; + __le64 rdma_req_rx_remote_oper_err; + __le64 rdma_req_rx_implied_nak_seq_err; + __le64 rdma_req_rx_cqe_err; + __le64 rdma_req_rx_cqe_flush_err; + + __le64 rdma_req_rx_dup_responses; + __le64 rdma_req_rx_invalid_packets; + __le64 rdma_req_tx_local_access_err; + __le64 rdma_req_tx_local_oper_err; + __le64 rdma_req_tx_memory_mgmt_err; + __le64 rsvd52; + __le64 rsvd53; + __le64 rsvd54; + + /* RDMA/ROCE RESP Error/Debugs (896 - 1023) */ + __le64 rdma_resp_rx_dup_requests; + __le64 rdma_resp_rx_out_of_buffer; + __le64 rdma_resp_rx_out_of_seq_pkts; + __le64 rdma_resp_rx_cqe_err; + __le64 rdma_resp_rx_cqe_flush_err; + __le64 rdma_resp_rx_local_len_err; + __le64 rdma_resp_rx_inv_request_err; + __le64 rdma_resp_rx_local_qp_oper_err; + + __le64 rdma_resp_rx_out_of_atomic_resource; + __le64 rdma_resp_tx_pkt_seq_err; + __le64 rdma_resp_tx_remote_inv_req_err; + __le64 rdma_resp_tx_remote_access_err; + __le64 rdma_resp_tx_remote_oper_err; + __le64 rdma_resp_tx_rnr_retry_err; + __le64 rsvd57; + __le64 rsvd58; +}; + +/** + * struct ionic_lif_info - LIF info structure + * @config: LIF configuration structure + * @status: LIF status structure + * @stats: LIF statistics structure + */ +struct ionic_lif_info { + union ionic_lif_config config; + struct ionic_lif_status status; + struct ionic_lif_stats stats; +}; + +union ionic_dev_cmd { + u32 words[16]; + struct ionic_admin_cmd cmd; + struct ionic_nop_cmd nop; + + struct ionic_dev_identify_cmd identify; + struct ionic_dev_init_cmd init; + struct ionic_dev_reset_cmd reset; + struct ionic_dev_getattr_cmd getattr; + struct ionic_dev_setattr_cmd setattr; + + struct ionic_port_identify_cmd port_identify; + struct ionic_port_init_cmd port_init; + struct ionic_port_reset_cmd port_reset; + struct ionic_port_getattr_cmd port_getattr; + struct ionic_port_setattr_cmd port_setattr; + + struct ionic_vf_setattr_cmd vf_setattr; + struct ionic_vf_getattr_cmd vf_getattr; + + struct ionic_lif_identify_cmd lif_identify; + struct ionic_lif_init_cmd lif_init; + struct ionic_lif_reset_cmd lif_reset; + + struct ionic_qos_identify_cmd qos_identify; + struct ionic_qos_init_cmd qos_init; + struct ionic_qos_reset_cmd qos_reset; + struct ionic_qos_clear_stats_cmd qos_clear_stats; + + struct ionic_q_identify_cmd q_identify; + struct ionic_q_init_cmd q_init; + struct ionic_q_control_cmd q_control; + + struct ionic_fw_download_cmd fw_download; + struct ionic_fw_control_cmd fw_control; +}; + +union ionic_dev_cmd_comp { + u32 words[4]; + u8 status; + struct ionic_admin_comp comp; + struct ionic_nop_comp nop; + + struct ionic_dev_identify_comp identify; + struct ionic_dev_init_comp init; + struct ionic_dev_reset_comp reset; + struct ionic_dev_getattr_comp getattr; + struct ionic_dev_setattr_comp setattr; + + struct ionic_port_identify_comp port_identify; + struct ionic_port_init_comp port_init; + struct ionic_port_reset_comp port_reset; + struct ionic_port_getattr_comp port_getattr; + struct ionic_port_setattr_comp port_setattr; + + struct ionic_vf_setattr_comp vf_setattr; + struct ionic_vf_getattr_comp vf_getattr; + + struct ionic_lif_identify_comp lif_identify; + struct ionic_lif_init_comp lif_init; + ionic_lif_reset_comp lif_reset; + + struct ionic_qos_identify_comp qos_identify; + ionic_qos_init_comp qos_init; + ionic_qos_reset_comp qos_reset; + + struct ionic_q_identify_comp q_identify; + struct ionic_q_init_comp q_init; + + ionic_fw_download_comp fw_download; + struct ionic_fw_control_comp fw_control; +}; + +/** + * struct ionic_hwstamp_regs - Hardware current timestamp registers + * @tick_low: Low 32 bits of hardware timestamp + * @tick_high: High 32 bits of hardware timestamp + */ +struct ionic_hwstamp_regs { + u32 tick_low; + u32 tick_high; +}; + +/** + * union ionic_dev_info_regs - Device info register format (read-only) + * @signature: Signature value of 0x44455649 ('DEVI') + * @version: Current version of info + * @asic_type: Asic type + * @asic_rev: Asic revision + * @fw_status: Firmware status + * bit 0 - 1 = fw running + * bit 4-7 - 4 bit generation number, changes on fw restart + * @fw_heartbeat: Firmware heartbeat counter + * @serial_num: Serial number + * @fw_version: Firmware version + * @hwstamp_regs: Hardware current timestamp registers + */ +union ionic_dev_info_regs { +#define IONIC_DEVINFO_FWVERS_BUFLEN 32 +#define IONIC_DEVINFO_SERIAL_BUFLEN 32 + struct { + u32 signature; + u8 version; + u8 asic_type; + u8 asic_rev; +#define IONIC_FW_STS_F_RUNNING 0x01 +#define IONIC_FW_STS_F_GENERATION 0xF0 + u8 fw_status; + u32 fw_heartbeat; + char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN]; + char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN]; + u8 rsvd_pad1024[948]; + struct ionic_hwstamp_regs hwstamp; + }; + u32 words[512]; +}; + +/** + * union ionic_dev_cmd_regs - Device command register format (read-write) + * @doorbell: Device Cmd Doorbell, write-only + * Write a 1 to signal device to process cmd, + * poll done for completion. + * @done: Done indicator, bit 0 == 1 when command is complete + * @cmd: Opcode-specific command bytes + * @comp: Opcode-specific response bytes + * @data: Opcode-specific side-data + */ +union ionic_dev_cmd_regs { + struct { + u32 doorbell; + u32 done; + union ionic_dev_cmd cmd; + union ionic_dev_cmd_comp comp; + u8 rsvd[48]; + u32 data[478]; + } __packed; + u32 words[512]; +}; + +/** + * union ionic_dev_regs - Device register format for bar 0 page 0 + * @info: Device info registers + * @devcmd: Device command registers + */ +union ionic_dev_regs { + struct { + union ionic_dev_info_regs info; + union ionic_dev_cmd_regs devcmd; + } __packed; + __le32 words[1024]; +}; + +union ionic_adminq_cmd { + struct ionic_admin_cmd cmd; + struct ionic_nop_cmd nop; + struct ionic_q_identify_cmd q_identify; + struct ionic_q_init_cmd q_init; + struct ionic_q_control_cmd q_control; + struct ionic_lif_setattr_cmd lif_setattr; + struct ionic_lif_getattr_cmd lif_getattr; + struct ionic_lif_setphc_cmd lif_setphc; + struct ionic_rx_mode_set_cmd rx_mode_set; + struct ionic_rx_filter_add_cmd rx_filter_add; + struct ionic_rx_filter_del_cmd rx_filter_del; + struct ionic_rdma_reset_cmd rdma_reset; + struct ionic_rdma_queue_cmd rdma_queue; + struct ionic_fw_download_cmd fw_download; + struct ionic_fw_control_cmd fw_control; +}; + +union ionic_adminq_comp { + struct ionic_admin_comp comp; + struct ionic_nop_comp nop; + struct ionic_q_identify_comp q_identify; + struct ionic_q_init_comp q_init; + struct ionic_lif_setattr_comp lif_setattr; + struct ionic_lif_getattr_comp lif_getattr; + struct ionic_admin_comp lif_setphc; + struct ionic_rx_filter_add_comp rx_filter_add; + struct ionic_fw_control_comp fw_control; +}; + +#define IONIC_BARS_MAX 6 +#define IONIC_PCI_BAR_DBELL 1 + +/* BAR0 */ +#define IONIC_BAR0_SIZE 0x8000 + +#define IONIC_BAR0_DEV_INFO_REGS_OFFSET 0x0000 +#define IONIC_BAR0_DEV_CMD_REGS_OFFSET 0x0800 +#define IONIC_BAR0_DEV_CMD_DATA_REGS_OFFSET 0x0c00 +#define IONIC_BAR0_INTR_STATUS_OFFSET 0x1000 +#define IONIC_BAR0_INTR_CTRL_OFFSET 0x2000 +#define IONIC_DEV_CMD_DONE 0x00000001 + +#define IONIC_ASIC_TYPE_CAPRI 0 + +/** + * struct ionic_doorbell - Doorbell register layout + * @p_index: Producer index + * @ring: Selects the specific ring of the queue to update + * Type-specific meaning: + * ring=0: Default producer/consumer queue + * ring=1: (CQ, EQ) Re-Arm queue. RDMA CQs + * send events to EQs when armed. EQs send + * interrupts when armed. + * @qid_lo: Queue destination for the producer index and flags (low bits) + * @qid_hi: Queue destination for the producer index and flags (high bits) + */ +struct ionic_doorbell { + __le16 p_index; + u8 ring; + u8 qid_lo; + __le16 qid_hi; + u16 rsvd2; +}; + +struct ionic_intr_status { + u32 status[2]; +}; + +struct ionic_notifyq_cmd { + __le32 data; /* Not used but needed for qcq structure */ +}; + +union ionic_notifyq_comp { + struct ionic_notifyq_event event; + struct ionic_link_change_event link_change; + struct ionic_reset_event reset; + struct ionic_heartbeat_event heartbeat; + struct ionic_log_event log; +}; + +/* Deprecate */ +struct ionic_identity { + union ionic_drv_identity drv; + union ionic_dev_identity dev; + union ionic_lif_identity lif; + union ionic_port_identity port; + union ionic_qos_identity qos; + union ionic_q_identity txq; +}; + +#endif /* _IONIC_IF_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c new file mode 100644 index 000000000..f7634884c --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -0,0 +1,3721 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/ethtool.h> +#include <linux/printk.h> +#include <linux/dynamic_debug.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/if_vlan.h> +#include <linux/rtnetlink.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/cpumask.h> +#include <linux/crash_dump.h> +#include <linux/vmalloc.h> + +#include "ionic.h" +#include "ionic_bus.h" +#include "ionic_dev.h" +#include "ionic_lif.h" +#include "ionic_txrx.h" +#include "ionic_ethtool.h" +#include "ionic_debugfs.h" + +/* queuetype support level */ +static const u8 ionic_qtype_versions[IONIC_QTYPE_MAX] = { + [IONIC_QTYPE_ADMINQ] = 0, /* 0 = Base version with CQ support */ + [IONIC_QTYPE_NOTIFYQ] = 0, /* 0 = Base version */ + [IONIC_QTYPE_RXQ] = 0, /* 0 = Base version with CQ+SG support */ + [IONIC_QTYPE_TXQ] = 1, /* 0 = Base version with CQ+SG support + * 1 = ... with Tx SG version 1 + */ +}; + +static void ionic_link_status_check(struct ionic_lif *lif); +static void ionic_lif_handle_fw_down(struct ionic_lif *lif); +static void ionic_lif_handle_fw_up(struct ionic_lif *lif); +static void ionic_lif_set_netdev_info(struct ionic_lif *lif); + +static void ionic_txrx_deinit(struct ionic_lif *lif); +static int ionic_txrx_init(struct ionic_lif *lif); +static int ionic_start_queues(struct ionic_lif *lif); +static void ionic_stop_queues(struct ionic_lif *lif); +static void ionic_lif_queue_identify(struct ionic_lif *lif); + +static void ionic_dim_work(struct work_struct *work) +{ + struct dim *dim = container_of(work, struct dim, work); + struct ionic_intr_info *intr; + struct dim_cq_moder cur_moder; + struct ionic_qcq *qcq; + struct ionic_lif *lif; + u32 new_coal; + + cur_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix); + qcq = container_of(dim, struct ionic_qcq, dim); + lif = qcq->q.lif; + new_coal = ionic_coal_usec_to_hw(lif->ionic, cur_moder.usec); + new_coal = new_coal ? new_coal : 1; + + intr = &qcq->intr; + if (intr->dim_coal_hw != new_coal) { + intr->dim_coal_hw = new_coal; + + ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, + intr->index, intr->dim_coal_hw); + } + + dim->state = DIM_START_MEASURE; +} + +static void ionic_lif_deferred_work(struct work_struct *work) +{ + struct ionic_lif *lif = container_of(work, struct ionic_lif, deferred.work); + struct ionic_deferred *def = &lif->deferred; + struct ionic_deferred_work *w = NULL; + + do { + spin_lock_bh(&def->lock); + if (!list_empty(&def->list)) { + w = list_first_entry(&def->list, + struct ionic_deferred_work, list); + list_del(&w->list); + } + spin_unlock_bh(&def->lock); + + if (!w) + break; + + switch (w->type) { + case IONIC_DW_TYPE_RX_MODE: + ionic_lif_rx_mode(lif); + break; + case IONIC_DW_TYPE_LINK_STATUS: + ionic_link_status_check(lif); + break; + case IONIC_DW_TYPE_LIF_RESET: + if (w->fw_status) { + ionic_lif_handle_fw_up(lif); + } else { + ionic_lif_handle_fw_down(lif); + + /* Fire off another watchdog to see + * if the FW is already back rather than + * waiting another whole cycle + */ + mod_timer(&lif->ionic->watchdog_timer, jiffies + 1); + } + break; + default: + break; + } + kfree(w); + w = NULL; + } while (true); +} + +void ionic_lif_deferred_enqueue(struct ionic_deferred *def, + struct ionic_deferred_work *work) +{ + spin_lock_bh(&def->lock); + list_add_tail(&work->list, &def->list); + spin_unlock_bh(&def->lock); + schedule_work(&def->work); +} + +static void ionic_link_status_check(struct ionic_lif *lif) +{ + struct net_device *netdev = lif->netdev; + u16 link_status; + bool link_up; + + if (!test_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state)) + return; + + /* Don't put carrier back up if we're in a broken state */ + if (test_bit(IONIC_LIF_F_BROKEN, lif->state)) { + clear_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state); + return; + } + + link_status = le16_to_cpu(lif->info->status.link_status); + link_up = link_status == IONIC_PORT_OPER_STATUS_UP; + + if (link_up) { + int err = 0; + + if (netdev->flags & IFF_UP && netif_running(netdev)) { + mutex_lock(&lif->queue_lock); + err = ionic_start_queues(lif); + if (err && err != -EBUSY) { + netdev_err(lif->netdev, + "Failed to start queues: %d\n", err); + set_bit(IONIC_LIF_F_BROKEN, lif->state); + netif_carrier_off(lif->netdev); + } + mutex_unlock(&lif->queue_lock); + } + + if (!err && !netif_carrier_ok(netdev)) { + ionic_port_identify(lif->ionic); + netdev_info(netdev, "Link up - %d Gbps\n", + le32_to_cpu(lif->info->status.link_speed) / 1000); + netif_carrier_on(netdev); + } + } else { + if (netif_carrier_ok(netdev)) { + netdev_info(netdev, "Link down\n"); + netif_carrier_off(netdev); + } + + if (netdev->flags & IFF_UP && netif_running(netdev)) { + mutex_lock(&lif->queue_lock); + ionic_stop_queues(lif); + mutex_unlock(&lif->queue_lock); + } + } + + clear_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state); +} + +void ionic_link_status_check_request(struct ionic_lif *lif, bool can_sleep) +{ + struct ionic_deferred_work *work; + + /* we only need one request outstanding at a time */ + if (test_and_set_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state)) + return; + + if (!can_sleep) { + work = kzalloc(sizeof(*work), GFP_ATOMIC); + if (!work) { + clear_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state); + return; + } + + work->type = IONIC_DW_TYPE_LINK_STATUS; + ionic_lif_deferred_enqueue(&lif->deferred, work); + } else { + ionic_link_status_check(lif); + } +} + +static void ionic_napi_deadline(struct timer_list *timer) +{ + struct ionic_qcq *qcq = container_of(timer, struct ionic_qcq, napi_deadline); + + napi_schedule(&qcq->napi); +} + +static irqreturn_t ionic_isr(int irq, void *data) +{ + struct napi_struct *napi = data; + + napi_schedule_irqoff(napi); + + return IRQ_HANDLED; +} + +static int ionic_request_irq(struct ionic_lif *lif, struct ionic_qcq *qcq) +{ + struct ionic_intr_info *intr = &qcq->intr; + struct device *dev = lif->ionic->dev; + struct ionic_queue *q = &qcq->q; + const char *name; + + if (lif->registered) + name = lif->netdev->name; + else + name = dev_name(dev); + + snprintf(intr->name, sizeof(intr->name), + "%s-%s-%s", IONIC_DRV_NAME, name, q->name); + + return devm_request_irq(dev, intr->vector, ionic_isr, + 0, intr->name, &qcq->napi); +} + +static int ionic_intr_alloc(struct ionic_lif *lif, struct ionic_intr_info *intr) +{ + struct ionic *ionic = lif->ionic; + int index; + + index = find_first_zero_bit(ionic->intrs, ionic->nintrs); + if (index == ionic->nintrs) { + netdev_warn(lif->netdev, "%s: no intr, index=%d nintrs=%d\n", + __func__, index, ionic->nintrs); + return -ENOSPC; + } + + set_bit(index, ionic->intrs); + ionic_intr_init(&ionic->idev, intr, index); + + return 0; +} + +static void ionic_intr_free(struct ionic *ionic, int index) +{ + if (index != IONIC_INTR_INDEX_NOT_ASSIGNED && index < ionic->nintrs) + clear_bit(index, ionic->intrs); +} + +static int ionic_qcq_enable(struct ionic_qcq *qcq) +{ + struct ionic_queue *q = &qcq->q; + struct ionic_lif *lif = q->lif; + struct ionic_dev *idev; + struct device *dev; + + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.q_control = { + .opcode = IONIC_CMD_Q_CONTROL, + .lif_index = cpu_to_le16(lif->index), + .type = q->type, + .index = cpu_to_le32(q->index), + .oper = IONIC_Q_ENABLE, + }, + }; + int ret; + + idev = &lif->ionic->idev; + dev = lif->ionic->dev; + + dev_dbg(dev, "q_enable.index %d q_enable.qtype %d\n", + ctx.cmd.q_control.index, ctx.cmd.q_control.type); + + if (qcq->flags & IONIC_QCQ_F_INTR) + ionic_intr_clean(idev->intr_ctrl, qcq->intr.index); + + ret = ionic_adminq_post_wait(lif, &ctx); + if (ret) + return ret; + + if (qcq->napi.poll) + napi_enable(&qcq->napi); + + if (qcq->flags & IONIC_QCQ_F_INTR) { + irq_set_affinity_hint(qcq->intr.vector, + &qcq->intr.affinity_mask); + ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, + IONIC_INTR_MASK_CLEAR); + } + + return 0; +} + +static int ionic_qcq_disable(struct ionic_lif *lif, struct ionic_qcq *qcq, int fw_err) +{ + struct ionic_queue *q; + + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.q_control = { + .opcode = IONIC_CMD_Q_CONTROL, + .oper = IONIC_Q_DISABLE, + }, + }; + + if (!qcq) { + netdev_err(lif->netdev, "%s: bad qcq\n", __func__); + return -ENXIO; + } + + q = &qcq->q; + + if (qcq->flags & IONIC_QCQ_F_INTR) { + struct ionic_dev *idev = &lif->ionic->idev; + + cancel_work_sync(&qcq->dim.work); + ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, + IONIC_INTR_MASK_SET); + synchronize_irq(qcq->intr.vector); + irq_set_affinity_hint(qcq->intr.vector, NULL); + napi_disable(&qcq->napi); + del_timer_sync(&qcq->napi_deadline); + } + + /* If there was a previous fw communcation error, don't bother with + * sending the adminq command and just return the same error value. + */ + if (fw_err == -ETIMEDOUT || fw_err == -ENXIO) + return fw_err; + + ctx.cmd.q_control.lif_index = cpu_to_le16(lif->index); + ctx.cmd.q_control.type = q->type; + ctx.cmd.q_control.index = cpu_to_le32(q->index); + dev_dbg(lif->ionic->dev, "q_disable.index %d q_disable.qtype %d\n", + ctx.cmd.q_control.index, ctx.cmd.q_control.type); + + return ionic_adminq_post_wait(lif, &ctx); +} + +static void ionic_lif_qcq_deinit(struct ionic_lif *lif, struct ionic_qcq *qcq) +{ + struct ionic_dev *idev = &lif->ionic->idev; + + if (!qcq) + return; + + if (!(qcq->flags & IONIC_QCQ_F_INITED)) + return; + + if (qcq->flags & IONIC_QCQ_F_INTR) { + ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, + IONIC_INTR_MASK_SET); + netif_napi_del(&qcq->napi); + } + + qcq->flags &= ~IONIC_QCQ_F_INITED; +} + +static void ionic_qcq_intr_free(struct ionic_lif *lif, struct ionic_qcq *qcq) +{ + if (!(qcq->flags & IONIC_QCQ_F_INTR) || qcq->intr.vector == 0) + return; + + irq_set_affinity_hint(qcq->intr.vector, NULL); + devm_free_irq(lif->ionic->dev, qcq->intr.vector, &qcq->napi); + qcq->intr.vector = 0; + ionic_intr_free(lif->ionic, qcq->intr.index); + qcq->intr.index = IONIC_INTR_INDEX_NOT_ASSIGNED; +} + +static void ionic_qcq_free(struct ionic_lif *lif, struct ionic_qcq *qcq) +{ + struct device *dev = lif->ionic->dev; + + if (!qcq) + return; + + ionic_debugfs_del_qcq(qcq); + + if (qcq->q_base) { + dma_free_coherent(dev, qcq->q_size, qcq->q_base, qcq->q_base_pa); + qcq->q_base = NULL; + qcq->q_base_pa = 0; + } + + if (qcq->cq_base) { + dma_free_coherent(dev, qcq->cq_size, qcq->cq_base, qcq->cq_base_pa); + qcq->cq_base = NULL; + qcq->cq_base_pa = 0; + } + + if (qcq->sg_base) { + dma_free_coherent(dev, qcq->sg_size, qcq->sg_base, qcq->sg_base_pa); + qcq->sg_base = NULL; + qcq->sg_base_pa = 0; + } + + ionic_qcq_intr_free(lif, qcq); + + if (qcq->cq.info) { + vfree(qcq->cq.info); + qcq->cq.info = NULL; + } + if (qcq->q.info) { + vfree(qcq->q.info); + qcq->q.info = NULL; + } +} + +static void ionic_qcqs_free(struct ionic_lif *lif) +{ + struct device *dev = lif->ionic->dev; + struct ionic_qcq *adminqcq; + unsigned long irqflags; + + if (lif->notifyqcq) { + ionic_qcq_free(lif, lif->notifyqcq); + devm_kfree(dev, lif->notifyqcq); + lif->notifyqcq = NULL; + } + + if (lif->adminqcq) { + spin_lock_irqsave(&lif->adminq_lock, irqflags); + adminqcq = READ_ONCE(lif->adminqcq); + lif->adminqcq = NULL; + spin_unlock_irqrestore(&lif->adminq_lock, irqflags); + if (adminqcq) { + ionic_qcq_free(lif, adminqcq); + devm_kfree(dev, adminqcq); + } + } + + if (lif->rxqcqs) { + devm_kfree(dev, lif->rxqstats); + lif->rxqstats = NULL; + devm_kfree(dev, lif->rxqcqs); + lif->rxqcqs = NULL; + } + + if (lif->txqcqs) { + devm_kfree(dev, lif->txqstats); + lif->txqstats = NULL; + devm_kfree(dev, lif->txqcqs); + lif->txqcqs = NULL; + } +} + +static void ionic_link_qcq_interrupts(struct ionic_qcq *src_qcq, + struct ionic_qcq *n_qcq) +{ + n_qcq->intr.vector = src_qcq->intr.vector; + n_qcq->intr.index = src_qcq->intr.index; + n_qcq->napi_qcq = src_qcq->napi_qcq; +} + +static int ionic_alloc_qcq_interrupt(struct ionic_lif *lif, struct ionic_qcq *qcq) +{ + int err; + + if (!(qcq->flags & IONIC_QCQ_F_INTR)) { + qcq->intr.index = IONIC_INTR_INDEX_NOT_ASSIGNED; + return 0; + } + + err = ionic_intr_alloc(lif, &qcq->intr); + if (err) { + netdev_warn(lif->netdev, "no intr for %s: %d\n", + qcq->q.name, err); + goto err_out; + } + + err = ionic_bus_get_irq(lif->ionic, qcq->intr.index); + if (err < 0) { + netdev_warn(lif->netdev, "no vector for %s: %d\n", + qcq->q.name, err); + goto err_out_free_intr; + } + qcq->intr.vector = err; + ionic_intr_mask_assert(lif->ionic->idev.intr_ctrl, qcq->intr.index, + IONIC_INTR_MASK_SET); + + err = ionic_request_irq(lif, qcq); + if (err) { + netdev_warn(lif->netdev, "irq request failed %d\n", err); + goto err_out_free_intr; + } + + /* try to get the irq on the local numa node first */ + qcq->intr.cpu = cpumask_local_spread(qcq->intr.index, + dev_to_node(lif->ionic->dev)); + if (qcq->intr.cpu != -1) + cpumask_set_cpu(qcq->intr.cpu, &qcq->intr.affinity_mask); + + netdev_dbg(lif->netdev, "%s: Interrupt index %d\n", qcq->q.name, qcq->intr.index); + return 0; + +err_out_free_intr: + ionic_intr_free(lif->ionic, qcq->intr.index); +err_out: + return err; +} + +static int ionic_qcq_alloc(struct ionic_lif *lif, unsigned int type, + unsigned int index, + const char *name, unsigned int flags, + unsigned int num_descs, unsigned int desc_size, + unsigned int cq_desc_size, + unsigned int sg_desc_size, + unsigned int pid, struct ionic_qcq **qcq) +{ + struct ionic_dev *idev = &lif->ionic->idev; + struct device *dev = lif->ionic->dev; + void *q_base, *cq_base, *sg_base; + dma_addr_t cq_base_pa = 0; + dma_addr_t sg_base_pa = 0; + dma_addr_t q_base_pa = 0; + struct ionic_qcq *new; + int err; + + *qcq = NULL; + + new = devm_kzalloc(dev, sizeof(*new), GFP_KERNEL); + if (!new) { + netdev_err(lif->netdev, "Cannot allocate queue structure\n"); + err = -ENOMEM; + goto err_out; + } + + new->q.dev = dev; + new->flags = flags; + + new->q.info = vzalloc(num_descs * sizeof(*new->q.info)); + if (!new->q.info) { + netdev_err(lif->netdev, "Cannot allocate queue info\n"); + err = -ENOMEM; + goto err_out_free_qcq; + } + + new->q.type = type; + new->q.max_sg_elems = lif->qtype_info[type].max_sg_elems; + + err = ionic_q_init(lif, idev, &new->q, index, name, num_descs, + desc_size, sg_desc_size, pid); + if (err) { + netdev_err(lif->netdev, "Cannot initialize queue\n"); + goto err_out_free_q_info; + } + + err = ionic_alloc_qcq_interrupt(lif, new); + if (err) + goto err_out; + + new->cq.info = vzalloc(num_descs * sizeof(*new->cq.info)); + if (!new->cq.info) { + netdev_err(lif->netdev, "Cannot allocate completion queue info\n"); + err = -ENOMEM; + goto err_out_free_irq; + } + + err = ionic_cq_init(lif, &new->cq, &new->intr, num_descs, cq_desc_size); + if (err) { + netdev_err(lif->netdev, "Cannot initialize completion queue\n"); + goto err_out_free_cq_info; + } + + if (flags & IONIC_QCQ_F_NOTIFYQ) { + int q_size, cq_size; + + /* q & cq need to be contiguous in case of notifyq */ + q_size = ALIGN(num_descs * desc_size, PAGE_SIZE); + cq_size = ALIGN(num_descs * cq_desc_size, PAGE_SIZE); + + new->q_size = PAGE_SIZE + q_size + cq_size; + new->q_base = dma_alloc_coherent(dev, new->q_size, + &new->q_base_pa, GFP_KERNEL); + if (!new->q_base) { + netdev_err(lif->netdev, "Cannot allocate qcq DMA memory\n"); + err = -ENOMEM; + goto err_out_free_cq_info; + } + q_base = PTR_ALIGN(new->q_base, PAGE_SIZE); + q_base_pa = ALIGN(new->q_base_pa, PAGE_SIZE); + ionic_q_map(&new->q, q_base, q_base_pa); + + cq_base = PTR_ALIGN(q_base + q_size, PAGE_SIZE); + cq_base_pa = ALIGN(new->q_base_pa + q_size, PAGE_SIZE); + ionic_cq_map(&new->cq, cq_base, cq_base_pa); + ionic_cq_bind(&new->cq, &new->q); + } else { + new->q_size = PAGE_SIZE + (num_descs * desc_size); + new->q_base = dma_alloc_coherent(dev, new->q_size, &new->q_base_pa, + GFP_KERNEL); + if (!new->q_base) { + netdev_err(lif->netdev, "Cannot allocate queue DMA memory\n"); + err = -ENOMEM; + goto err_out_free_cq_info; + } + q_base = PTR_ALIGN(new->q_base, PAGE_SIZE); + q_base_pa = ALIGN(new->q_base_pa, PAGE_SIZE); + ionic_q_map(&new->q, q_base, q_base_pa); + + new->cq_size = PAGE_SIZE + (num_descs * cq_desc_size); + new->cq_base = dma_alloc_coherent(dev, new->cq_size, &new->cq_base_pa, + GFP_KERNEL); + if (!new->cq_base) { + netdev_err(lif->netdev, "Cannot allocate cq DMA memory\n"); + err = -ENOMEM; + goto err_out_free_q; + } + cq_base = PTR_ALIGN(new->cq_base, PAGE_SIZE); + cq_base_pa = ALIGN(new->cq_base_pa, PAGE_SIZE); + ionic_cq_map(&new->cq, cq_base, cq_base_pa); + ionic_cq_bind(&new->cq, &new->q); + } + + if (flags & IONIC_QCQ_F_SG) { + new->sg_size = PAGE_SIZE + (num_descs * sg_desc_size); + new->sg_base = dma_alloc_coherent(dev, new->sg_size, &new->sg_base_pa, + GFP_KERNEL); + if (!new->sg_base) { + netdev_err(lif->netdev, "Cannot allocate sg DMA memory\n"); + err = -ENOMEM; + goto err_out_free_cq; + } + sg_base = PTR_ALIGN(new->sg_base, PAGE_SIZE); + sg_base_pa = ALIGN(new->sg_base_pa, PAGE_SIZE); + ionic_q_sg_map(&new->q, sg_base, sg_base_pa); + } + + INIT_WORK(&new->dim.work, ionic_dim_work); + new->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE; + + *qcq = new; + + return 0; + +err_out_free_cq: + dma_free_coherent(dev, new->cq_size, new->cq_base, new->cq_base_pa); +err_out_free_q: + dma_free_coherent(dev, new->q_size, new->q_base, new->q_base_pa); +err_out_free_cq_info: + vfree(new->cq.info); +err_out_free_irq: + if (flags & IONIC_QCQ_F_INTR) { + devm_free_irq(dev, new->intr.vector, &new->napi); + ionic_intr_free(lif->ionic, new->intr.index); + } +err_out_free_q_info: + vfree(new->q.info); +err_out_free_qcq: + devm_kfree(dev, new); +err_out: + dev_err(dev, "qcq alloc of %s%d failed %d\n", name, index, err); + return err; +} + +static int ionic_qcqs_alloc(struct ionic_lif *lif) +{ + struct device *dev = lif->ionic->dev; + unsigned int flags; + int err; + + flags = IONIC_QCQ_F_INTR; + err = ionic_qcq_alloc(lif, IONIC_QTYPE_ADMINQ, 0, "admin", flags, + IONIC_ADMINQ_LENGTH, + sizeof(struct ionic_admin_cmd), + sizeof(struct ionic_admin_comp), + 0, lif->kern_pid, &lif->adminqcq); + if (err) + return err; + ionic_debugfs_add_qcq(lif, lif->adminqcq); + + if (lif->ionic->nnqs_per_lif) { + flags = IONIC_QCQ_F_NOTIFYQ; + err = ionic_qcq_alloc(lif, IONIC_QTYPE_NOTIFYQ, 0, "notifyq", + flags, IONIC_NOTIFYQ_LENGTH, + sizeof(struct ionic_notifyq_cmd), + sizeof(union ionic_notifyq_comp), + 0, lif->kern_pid, &lif->notifyqcq); + if (err) + goto err_out; + ionic_debugfs_add_qcq(lif, lif->notifyqcq); + + /* Let the notifyq ride on the adminq interrupt */ + ionic_link_qcq_interrupts(lif->adminqcq, lif->notifyqcq); + } + + err = -ENOMEM; + lif->txqcqs = devm_kcalloc(dev, lif->ionic->ntxqs_per_lif, + sizeof(*lif->txqcqs), GFP_KERNEL); + if (!lif->txqcqs) + goto err_out; + lif->rxqcqs = devm_kcalloc(dev, lif->ionic->nrxqs_per_lif, + sizeof(*lif->rxqcqs), GFP_KERNEL); + if (!lif->rxqcqs) + goto err_out; + + lif->txqstats = devm_kcalloc(dev, lif->ionic->ntxqs_per_lif + 1, + sizeof(*lif->txqstats), GFP_KERNEL); + if (!lif->txqstats) + goto err_out; + lif->rxqstats = devm_kcalloc(dev, lif->ionic->nrxqs_per_lif + 1, + sizeof(*lif->rxqstats), GFP_KERNEL); + if (!lif->rxqstats) + goto err_out; + + return 0; + +err_out: + ionic_qcqs_free(lif); + return err; +} + +static void ionic_qcq_sanitize(struct ionic_qcq *qcq) +{ + qcq->q.tail_idx = 0; + qcq->q.head_idx = 0; + qcq->cq.tail_idx = 0; + qcq->cq.done_color = 1; + memset(qcq->q_base, 0, qcq->q_size); + memset(qcq->cq_base, 0, qcq->cq_size); + memset(qcq->sg_base, 0, qcq->sg_size); +} + +static int ionic_lif_txq_init(struct ionic_lif *lif, struct ionic_qcq *qcq) +{ + struct device *dev = lif->ionic->dev; + struct ionic_queue *q = &qcq->q; + struct ionic_cq *cq = &qcq->cq; + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.q_init = { + .opcode = IONIC_CMD_Q_INIT, + .lif_index = cpu_to_le16(lif->index), + .type = q->type, + .ver = lif->qtype_info[q->type].version, + .index = cpu_to_le32(q->index), + .flags = cpu_to_le16(IONIC_QINIT_F_IRQ | + IONIC_QINIT_F_SG), + .pid = cpu_to_le16(q->pid), + .ring_size = ilog2(q->num_descs), + .ring_base = cpu_to_le64(q->base_pa), + .cq_ring_base = cpu_to_le64(cq->base_pa), + .sg_ring_base = cpu_to_le64(q->sg_base_pa), + .features = cpu_to_le64(q->features), + }, + }; + unsigned int intr_index; + int err; + + intr_index = qcq->intr.index; + + ctx.cmd.q_init.intr_index = cpu_to_le16(intr_index); + + dev_dbg(dev, "txq_init.pid %d\n", ctx.cmd.q_init.pid); + dev_dbg(dev, "txq_init.index %d\n", ctx.cmd.q_init.index); + dev_dbg(dev, "txq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base); + dev_dbg(dev, "txq_init.ring_size %d\n", ctx.cmd.q_init.ring_size); + dev_dbg(dev, "txq_init.flags 0x%x\n", ctx.cmd.q_init.flags); + dev_dbg(dev, "txq_init.ver %d\n", ctx.cmd.q_init.ver); + dev_dbg(dev, "txq_init.intr_index %d\n", ctx.cmd.q_init.intr_index); + + ionic_qcq_sanitize(qcq); + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + return err; + + q->hw_type = ctx.comp.q_init.hw_type; + q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index); + q->dbval = IONIC_DBELL_QID(q->hw_index); + + dev_dbg(dev, "txq->hw_type %d\n", q->hw_type); + dev_dbg(dev, "txq->hw_index %d\n", q->hw_index); + + q->dbell_deadline = IONIC_TX_DOORBELL_DEADLINE; + q->dbell_jiffies = jiffies; + + if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) { + netif_napi_add(lif->netdev, &qcq->napi, ionic_tx_napi); + qcq->napi_qcq = qcq; + timer_setup(&qcq->napi_deadline, ionic_napi_deadline, 0); + } + + qcq->flags |= IONIC_QCQ_F_INITED; + + return 0; +} + +static int ionic_lif_rxq_init(struct ionic_lif *lif, struct ionic_qcq *qcq) +{ + struct device *dev = lif->ionic->dev; + struct ionic_queue *q = &qcq->q; + struct ionic_cq *cq = &qcq->cq; + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.q_init = { + .opcode = IONIC_CMD_Q_INIT, + .lif_index = cpu_to_le16(lif->index), + .type = q->type, + .ver = lif->qtype_info[q->type].version, + .index = cpu_to_le32(q->index), + .flags = cpu_to_le16(IONIC_QINIT_F_IRQ | + IONIC_QINIT_F_SG), + .intr_index = cpu_to_le16(cq->bound_intr->index), + .pid = cpu_to_le16(q->pid), + .ring_size = ilog2(q->num_descs), + .ring_base = cpu_to_le64(q->base_pa), + .cq_ring_base = cpu_to_le64(cq->base_pa), + .sg_ring_base = cpu_to_le64(q->sg_base_pa), + .features = cpu_to_le64(q->features), + }, + }; + int err; + + dev_dbg(dev, "rxq_init.pid %d\n", ctx.cmd.q_init.pid); + dev_dbg(dev, "rxq_init.index %d\n", ctx.cmd.q_init.index); + dev_dbg(dev, "rxq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base); + dev_dbg(dev, "rxq_init.ring_size %d\n", ctx.cmd.q_init.ring_size); + dev_dbg(dev, "rxq_init.flags 0x%x\n", ctx.cmd.q_init.flags); + dev_dbg(dev, "rxq_init.ver %d\n", ctx.cmd.q_init.ver); + dev_dbg(dev, "rxq_init.intr_index %d\n", ctx.cmd.q_init.intr_index); + + ionic_qcq_sanitize(qcq); + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + return err; + + q->hw_type = ctx.comp.q_init.hw_type; + q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index); + q->dbval = IONIC_DBELL_QID(q->hw_index); + + dev_dbg(dev, "rxq->hw_type %d\n", q->hw_type); + dev_dbg(dev, "rxq->hw_index %d\n", q->hw_index); + + q->dbell_deadline = IONIC_RX_MIN_DOORBELL_DEADLINE; + q->dbell_jiffies = jiffies; + + if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) + netif_napi_add(lif->netdev, &qcq->napi, ionic_rx_napi); + else + netif_napi_add(lif->netdev, &qcq->napi, ionic_txrx_napi); + + qcq->napi_qcq = qcq; + timer_setup(&qcq->napi_deadline, ionic_napi_deadline, 0); + + qcq->flags |= IONIC_QCQ_F_INITED; + + return 0; +} + +int ionic_lif_create_hwstamp_txq(struct ionic_lif *lif) +{ + unsigned int num_desc, desc_sz, comp_sz, sg_desc_sz; + unsigned int txq_i, flags; + struct ionic_qcq *txq; + u64 features; + int err; + + if (lif->hwstamp_txq) + return 0; + + features = IONIC_Q_F_2X_CQ_DESC | IONIC_TXQ_F_HWSTAMP; + + num_desc = IONIC_MIN_TXRX_DESC; + desc_sz = sizeof(struct ionic_txq_desc); + comp_sz = 2 * sizeof(struct ionic_txq_comp); + + if (lif->qtype_info[IONIC_QTYPE_TXQ].version >= 1 && + lif->qtype_info[IONIC_QTYPE_TXQ].sg_desc_sz == sizeof(struct ionic_txq_sg_desc_v1)) + sg_desc_sz = sizeof(struct ionic_txq_sg_desc_v1); + else + sg_desc_sz = sizeof(struct ionic_txq_sg_desc); + + txq_i = lif->ionic->ntxqs_per_lif; + flags = IONIC_QCQ_F_TX_STATS | IONIC_QCQ_F_SG; + + err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, txq_i, "hwstamp_tx", flags, + num_desc, desc_sz, comp_sz, sg_desc_sz, + lif->kern_pid, &txq); + if (err) + goto err_qcq_alloc; + + txq->q.features = features; + + ionic_link_qcq_interrupts(lif->adminqcq, txq); + ionic_debugfs_add_qcq(lif, txq); + + lif->hwstamp_txq = txq; + + if (netif_running(lif->netdev)) { + err = ionic_lif_txq_init(lif, txq); + if (err) + goto err_qcq_init; + + if (test_bit(IONIC_LIF_F_UP, lif->state)) { + err = ionic_qcq_enable(txq); + if (err) + goto err_qcq_enable; + } + } + + return 0; + +err_qcq_enable: + ionic_lif_qcq_deinit(lif, txq); +err_qcq_init: + lif->hwstamp_txq = NULL; + ionic_debugfs_del_qcq(txq); + ionic_qcq_free(lif, txq); + devm_kfree(lif->ionic->dev, txq); +err_qcq_alloc: + return err; +} + +int ionic_lif_create_hwstamp_rxq(struct ionic_lif *lif) +{ + unsigned int num_desc, desc_sz, comp_sz, sg_desc_sz; + unsigned int rxq_i, flags; + struct ionic_qcq *rxq; + u64 features; + int err; + + if (lif->hwstamp_rxq) + return 0; + + features = IONIC_Q_F_2X_CQ_DESC | IONIC_RXQ_F_HWSTAMP; + + num_desc = IONIC_MIN_TXRX_DESC; + desc_sz = sizeof(struct ionic_rxq_desc); + comp_sz = 2 * sizeof(struct ionic_rxq_comp); + sg_desc_sz = sizeof(struct ionic_rxq_sg_desc); + + rxq_i = lif->ionic->nrxqs_per_lif; + flags = IONIC_QCQ_F_RX_STATS | IONIC_QCQ_F_SG; + + err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, rxq_i, "hwstamp_rx", flags, + num_desc, desc_sz, comp_sz, sg_desc_sz, + lif->kern_pid, &rxq); + if (err) + goto err_qcq_alloc; + + rxq->q.features = features; + + ionic_link_qcq_interrupts(lif->adminqcq, rxq); + ionic_debugfs_add_qcq(lif, rxq); + + lif->hwstamp_rxq = rxq; + + if (netif_running(lif->netdev)) { + err = ionic_lif_rxq_init(lif, rxq); + if (err) + goto err_qcq_init; + + if (test_bit(IONIC_LIF_F_UP, lif->state)) { + ionic_rx_fill(&rxq->q); + err = ionic_qcq_enable(rxq); + if (err) + goto err_qcq_enable; + } + } + + return 0; + +err_qcq_enable: + ionic_lif_qcq_deinit(lif, rxq); +err_qcq_init: + lif->hwstamp_rxq = NULL; + ionic_debugfs_del_qcq(rxq); + ionic_qcq_free(lif, rxq); + devm_kfree(lif->ionic->dev, rxq); +err_qcq_alloc: + return err; +} + +int ionic_lif_config_hwstamp_rxq_all(struct ionic_lif *lif, bool rx_all) +{ + struct ionic_queue_params qparam; + + ionic_init_queue_params(lif, &qparam); + + if (rx_all) + qparam.rxq_features = IONIC_Q_F_2X_CQ_DESC | IONIC_RXQ_F_HWSTAMP; + else + qparam.rxq_features = 0; + + /* if we're not running, just set the values and return */ + if (!netif_running(lif->netdev)) { + lif->rxq_features = qparam.rxq_features; + return 0; + } + + return ionic_reconfigure_queues(lif, &qparam); +} + +int ionic_lif_set_hwstamp_txmode(struct ionic_lif *lif, u16 txstamp_mode) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_setattr = { + .opcode = IONIC_CMD_LIF_SETATTR, + .index = cpu_to_le16(lif->index), + .attr = IONIC_LIF_ATTR_TXSTAMP, + .txstamp_mode = cpu_to_le16(txstamp_mode), + }, + }; + + return ionic_adminq_post_wait(lif, &ctx); +} + +static void ionic_lif_del_hwstamp_rxfilt(struct ionic_lif *lif) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.rx_filter_del = { + .opcode = IONIC_CMD_RX_FILTER_DEL, + .lif_index = cpu_to_le16(lif->index), + }, + }; + struct ionic_rx_filter *f; + u32 filter_id; + int err; + + spin_lock_bh(&lif->rx_filters.lock); + + f = ionic_rx_filter_rxsteer(lif); + if (!f) { + spin_unlock_bh(&lif->rx_filters.lock); + return; + } + + filter_id = f->filter_id; + ionic_rx_filter_free(lif, f); + + spin_unlock_bh(&lif->rx_filters.lock); + + netdev_dbg(lif->netdev, "rx_filter del RXSTEER (id %d)\n", filter_id); + + ctx.cmd.rx_filter_del.filter_id = cpu_to_le32(filter_id); + + err = ionic_adminq_post_wait(lif, &ctx); + if (err && err != -EEXIST) + netdev_dbg(lif->netdev, "failed to delete rx_filter RXSTEER (id %d)\n", filter_id); +} + +static int ionic_lif_add_hwstamp_rxfilt(struct ionic_lif *lif, u64 pkt_class) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.rx_filter_add = { + .opcode = IONIC_CMD_RX_FILTER_ADD, + .lif_index = cpu_to_le16(lif->index), + .match = cpu_to_le16(IONIC_RX_FILTER_STEER_PKTCLASS), + .pkt_class = cpu_to_le64(pkt_class), + }, + }; + u8 qtype; + u32 qid; + int err; + + if (!lif->hwstamp_rxq) + return -EINVAL; + + qtype = lif->hwstamp_rxq->q.type; + ctx.cmd.rx_filter_add.qtype = qtype; + + qid = lif->hwstamp_rxq->q.index; + ctx.cmd.rx_filter_add.qid = cpu_to_le32(qid); + + netdev_dbg(lif->netdev, "rx_filter add RXSTEER\n"); + err = ionic_adminq_post_wait(lif, &ctx); + if (err && err != -EEXIST) + return err; + + spin_lock_bh(&lif->rx_filters.lock); + err = ionic_rx_filter_save(lif, 0, qid, 0, &ctx, IONIC_FILTER_STATE_SYNCED); + spin_unlock_bh(&lif->rx_filters.lock); + + return err; +} + +int ionic_lif_set_hwstamp_rxfilt(struct ionic_lif *lif, u64 pkt_class) +{ + ionic_lif_del_hwstamp_rxfilt(lif); + + if (!pkt_class) + return 0; + + return ionic_lif_add_hwstamp_rxfilt(lif, pkt_class); +} + +static bool ionic_notifyq_service(struct ionic_cq *cq, + struct ionic_cq_info *cq_info) +{ + union ionic_notifyq_comp *comp = cq_info->cq_desc; + struct ionic_deferred_work *work; + struct net_device *netdev; + struct ionic_queue *q; + struct ionic_lif *lif; + u64 eid; + + q = cq->bound_q; + lif = q->info[0].cb_arg; + netdev = lif->netdev; + eid = le64_to_cpu(comp->event.eid); + + /* Have we run out of new completions to process? */ + if ((s64)(eid - lif->last_eid) <= 0) + return false; + + lif->last_eid = eid; + + dev_dbg(lif->ionic->dev, "notifyq event:\n"); + dynamic_hex_dump("event ", DUMP_PREFIX_OFFSET, 16, 1, + comp, sizeof(*comp), true); + + switch (le16_to_cpu(comp->event.ecode)) { + case IONIC_EVENT_LINK_CHANGE: + ionic_link_status_check_request(lif, CAN_NOT_SLEEP); + break; + case IONIC_EVENT_RESET: + if (lif->ionic->idev.fw_status_ready && + !test_bit(IONIC_LIF_F_FW_RESET, lif->state) && + !test_and_set_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { + work = kzalloc(sizeof(*work), GFP_ATOMIC); + if (!work) { + netdev_err(lif->netdev, "Reset event dropped\n"); + clear_bit(IONIC_LIF_F_FW_STOPPING, lif->state); + } else { + work->type = IONIC_DW_TYPE_LIF_RESET; + ionic_lif_deferred_enqueue(&lif->deferred, work); + } + } + break; + default: + netdev_warn(netdev, "Notifyq event ecode=%d eid=%lld\n", + comp->event.ecode, eid); + break; + } + + return true; +} + +static bool ionic_adminq_service(struct ionic_cq *cq, + struct ionic_cq_info *cq_info) +{ + struct ionic_admin_comp *comp = cq_info->cq_desc; + + if (!color_match(comp->color, cq->done_color)) + return false; + + ionic_q_service(cq->bound_q, cq_info, le16_to_cpu(comp->comp_index)); + + return true; +} + +static int ionic_adminq_napi(struct napi_struct *napi, int budget) +{ + struct ionic_intr_info *intr = napi_to_cq(napi)->bound_intr; + struct ionic_lif *lif = napi_to_cq(napi)->lif; + struct ionic_dev *idev = &lif->ionic->idev; + unsigned long irqflags; + unsigned int flags = 0; + bool resched = false; + int rx_work = 0; + int tx_work = 0; + int n_work = 0; + int a_work = 0; + int work_done; + int credits; + + if (lif->notifyqcq && lif->notifyqcq->flags & IONIC_QCQ_F_INITED) + n_work = ionic_cq_service(&lif->notifyqcq->cq, budget, + ionic_notifyq_service, NULL, NULL); + + spin_lock_irqsave(&lif->adminq_lock, irqflags); + if (lif->adminqcq && lif->adminqcq->flags & IONIC_QCQ_F_INITED) + a_work = ionic_cq_service(&lif->adminqcq->cq, budget, + ionic_adminq_service, NULL, NULL); + spin_unlock_irqrestore(&lif->adminq_lock, irqflags); + + if (lif->hwstamp_rxq) + rx_work = ionic_cq_service(&lif->hwstamp_rxq->cq, budget, + ionic_rx_service, NULL, NULL); + + if (lif->hwstamp_txq) + tx_work = ionic_cq_service(&lif->hwstamp_txq->cq, budget, + ionic_tx_service, NULL, NULL); + + work_done = max(max(n_work, a_work), max(rx_work, tx_work)); + if (work_done < budget && napi_complete_done(napi, work_done)) { + flags |= IONIC_INTR_CRED_UNMASK; + intr->rearm_count++; + } + + if (work_done || flags) { + flags |= IONIC_INTR_CRED_RESET_COALESCE; + credits = n_work + a_work + rx_work + tx_work; + ionic_intr_credits(idev->intr_ctrl, intr->index, credits, flags); + } + + if (!a_work && ionic_adminq_poke_doorbell(&lif->adminqcq->q)) + resched = true; + if (lif->hwstamp_rxq && !rx_work && ionic_rxq_poke_doorbell(&lif->hwstamp_rxq->q)) + resched = true; + if (lif->hwstamp_txq && !tx_work && ionic_txq_poke_doorbell(&lif->hwstamp_txq->q)) + resched = true; + if (resched) + mod_timer(&lif->adminqcq->napi_deadline, + jiffies + IONIC_NAPI_DEADLINE); + + return work_done; +} + +void ionic_get_stats64(struct net_device *netdev, + struct rtnl_link_stats64 *ns) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_lif_stats *ls; + + memset(ns, 0, sizeof(*ns)); + ls = &lif->info->stats; + + ns->rx_packets = le64_to_cpu(ls->rx_ucast_packets) + + le64_to_cpu(ls->rx_mcast_packets) + + le64_to_cpu(ls->rx_bcast_packets); + + ns->tx_packets = le64_to_cpu(ls->tx_ucast_packets) + + le64_to_cpu(ls->tx_mcast_packets) + + le64_to_cpu(ls->tx_bcast_packets); + + ns->rx_bytes = le64_to_cpu(ls->rx_ucast_bytes) + + le64_to_cpu(ls->rx_mcast_bytes) + + le64_to_cpu(ls->rx_bcast_bytes); + + ns->tx_bytes = le64_to_cpu(ls->tx_ucast_bytes) + + le64_to_cpu(ls->tx_mcast_bytes) + + le64_to_cpu(ls->tx_bcast_bytes); + + ns->rx_dropped = le64_to_cpu(ls->rx_ucast_drop_packets) + + le64_to_cpu(ls->rx_mcast_drop_packets) + + le64_to_cpu(ls->rx_bcast_drop_packets); + + ns->tx_dropped = le64_to_cpu(ls->tx_ucast_drop_packets) + + le64_to_cpu(ls->tx_mcast_drop_packets) + + le64_to_cpu(ls->tx_bcast_drop_packets); + + ns->multicast = le64_to_cpu(ls->rx_mcast_packets); + + ns->rx_over_errors = le64_to_cpu(ls->rx_queue_empty); + + ns->rx_missed_errors = le64_to_cpu(ls->rx_dma_error) + + le64_to_cpu(ls->rx_queue_disabled) + + le64_to_cpu(ls->rx_desc_fetch_error) + + le64_to_cpu(ls->rx_desc_data_error); + + ns->tx_aborted_errors = le64_to_cpu(ls->tx_dma_error) + + le64_to_cpu(ls->tx_queue_disabled) + + le64_to_cpu(ls->tx_desc_fetch_error) + + le64_to_cpu(ls->tx_desc_data_error); + + ns->rx_errors = ns->rx_over_errors + + ns->rx_missed_errors; + + ns->tx_errors = ns->tx_aborted_errors; +} + +static int ionic_addr_add(struct net_device *netdev, const u8 *addr) +{ + return ionic_lif_list_addr(netdev_priv(netdev), addr, ADD_ADDR); +} + +static int ionic_addr_del(struct net_device *netdev, const u8 *addr) +{ + /* Don't delete our own address from the uc list */ + if (ether_addr_equal(addr, netdev->dev_addr)) + return 0; + + return ionic_lif_list_addr(netdev_priv(netdev), addr, DEL_ADDR); +} + +void ionic_lif_rx_mode(struct ionic_lif *lif) +{ + struct net_device *netdev = lif->netdev; + unsigned int nfilters; + unsigned int nd_flags; + char buf[128]; + u16 rx_mode; + int i; +#define REMAIN(__x) (sizeof(buf) - (__x)) + + mutex_lock(&lif->config_lock); + + /* grab the flags once for local use */ + nd_flags = netdev->flags; + + rx_mode = IONIC_RX_MODE_F_UNICAST; + rx_mode |= (nd_flags & IFF_MULTICAST) ? IONIC_RX_MODE_F_MULTICAST : 0; + rx_mode |= (nd_flags & IFF_BROADCAST) ? IONIC_RX_MODE_F_BROADCAST : 0; + rx_mode |= (nd_flags & IFF_PROMISC) ? IONIC_RX_MODE_F_PROMISC : 0; + rx_mode |= (nd_flags & IFF_ALLMULTI) ? IONIC_RX_MODE_F_ALLMULTI : 0; + + /* sync the filters */ + ionic_rx_filter_sync(lif); + + /* check for overflow state + * if so, we track that we overflowed and enable NIC PROMISC + * else if the overflow is set and not needed + * we remove our overflow flag and check the netdev flags + * to see if we can disable NIC PROMISC + */ + nfilters = le32_to_cpu(lif->identity->eth.max_ucast_filters); + + if (((lif->nucast + lif->nmcast) >= nfilters) || + (lif->max_vlans && lif->nvlans >= lif->max_vlans)) { + rx_mode |= IONIC_RX_MODE_F_PROMISC; + rx_mode |= IONIC_RX_MODE_F_ALLMULTI; + } else { + if (!(nd_flags & IFF_PROMISC)) + rx_mode &= ~IONIC_RX_MODE_F_PROMISC; + if (!(nd_flags & IFF_ALLMULTI)) + rx_mode &= ~IONIC_RX_MODE_F_ALLMULTI; + } + + i = scnprintf(buf, sizeof(buf), "rx_mode 0x%04x -> 0x%04x:", + lif->rx_mode, rx_mode); + if (rx_mode & IONIC_RX_MODE_F_UNICAST) + i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_UNICAST"); + if (rx_mode & IONIC_RX_MODE_F_MULTICAST) + i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_MULTICAST"); + if (rx_mode & IONIC_RX_MODE_F_BROADCAST) + i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_BROADCAST"); + if (rx_mode & IONIC_RX_MODE_F_PROMISC) + i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_PROMISC"); + if (rx_mode & IONIC_RX_MODE_F_ALLMULTI) + i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_ALLMULTI"); + if (rx_mode & IONIC_RX_MODE_F_RDMA_SNIFFER) + i += scnprintf(&buf[i], REMAIN(i), " RX_MODE_F_RDMA_SNIFFER"); + netdev_dbg(netdev, "lif%d %s\n", lif->index, buf); + + if (lif->rx_mode != rx_mode) { + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.rx_mode_set = { + .opcode = IONIC_CMD_RX_MODE_SET, + .lif_index = cpu_to_le16(lif->index), + }, + }; + int err; + + ctx.cmd.rx_mode_set.rx_mode = cpu_to_le16(rx_mode); + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + netdev_warn(netdev, "set rx_mode 0x%04x failed: %d\n", + rx_mode, err); + else + lif->rx_mode = rx_mode; + } + + mutex_unlock(&lif->config_lock); +} + +static void ionic_ndo_set_rx_mode(struct net_device *netdev) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_deferred_work *work; + + /* Sync the kernel filter list with the driver filter list */ + __dev_uc_sync(netdev, ionic_addr_add, ionic_addr_del); + __dev_mc_sync(netdev, ionic_addr_add, ionic_addr_del); + + /* Shove off the rest of the rxmode work to the work task + * which will include syncing the filters to the firmware. + */ + work = kzalloc(sizeof(*work), GFP_ATOMIC); + if (!work) { + netdev_err(lif->netdev, "rxmode change dropped\n"); + return; + } + work->type = IONIC_DW_TYPE_RX_MODE; + netdev_dbg(lif->netdev, "deferred: rx_mode\n"); + ionic_lif_deferred_enqueue(&lif->deferred, work); +} + +static __le64 ionic_netdev_features_to_nic(netdev_features_t features) +{ + u64 wanted = 0; + + if (features & NETIF_F_HW_VLAN_CTAG_TX) + wanted |= IONIC_ETH_HW_VLAN_TX_TAG; + if (features & NETIF_F_HW_VLAN_CTAG_RX) + wanted |= IONIC_ETH_HW_VLAN_RX_STRIP; + if (features & NETIF_F_HW_VLAN_CTAG_FILTER) + wanted |= IONIC_ETH_HW_VLAN_RX_FILTER; + if (features & NETIF_F_RXHASH) + wanted |= IONIC_ETH_HW_RX_HASH; + if (features & NETIF_F_RXCSUM) + wanted |= IONIC_ETH_HW_RX_CSUM; + if (features & NETIF_F_SG) + wanted |= IONIC_ETH_HW_TX_SG; + if (features & NETIF_F_HW_CSUM) + wanted |= IONIC_ETH_HW_TX_CSUM; + if (features & NETIF_F_TSO) + wanted |= IONIC_ETH_HW_TSO; + if (features & NETIF_F_TSO6) + wanted |= IONIC_ETH_HW_TSO_IPV6; + if (features & NETIF_F_TSO_ECN) + wanted |= IONIC_ETH_HW_TSO_ECN; + if (features & NETIF_F_GSO_GRE) + wanted |= IONIC_ETH_HW_TSO_GRE; + if (features & NETIF_F_GSO_GRE_CSUM) + wanted |= IONIC_ETH_HW_TSO_GRE_CSUM; + if (features & NETIF_F_GSO_IPXIP4) + wanted |= IONIC_ETH_HW_TSO_IPXIP4; + if (features & NETIF_F_GSO_IPXIP6) + wanted |= IONIC_ETH_HW_TSO_IPXIP6; + if (features & NETIF_F_GSO_UDP_TUNNEL) + wanted |= IONIC_ETH_HW_TSO_UDP; + if (features & NETIF_F_GSO_UDP_TUNNEL_CSUM) + wanted |= IONIC_ETH_HW_TSO_UDP_CSUM; + + return cpu_to_le64(wanted); +} + +static int ionic_set_nic_features(struct ionic_lif *lif, + netdev_features_t features) +{ + struct device *dev = lif->ionic->dev; + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_setattr = { + .opcode = IONIC_CMD_LIF_SETATTR, + .index = cpu_to_le16(lif->index), + .attr = IONIC_LIF_ATTR_FEATURES, + }, + }; + u64 vlan_flags = IONIC_ETH_HW_VLAN_TX_TAG | + IONIC_ETH_HW_VLAN_RX_STRIP | + IONIC_ETH_HW_VLAN_RX_FILTER; + u64 old_hw_features; + int err; + + ctx.cmd.lif_setattr.features = ionic_netdev_features_to_nic(features); + + if (lif->phc) + ctx.cmd.lif_setattr.features |= cpu_to_le64(IONIC_ETH_HW_TIMESTAMP); + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + return err; + + old_hw_features = lif->hw_features; + lif->hw_features = le64_to_cpu(ctx.cmd.lif_setattr.features & + ctx.comp.lif_setattr.features); + + if ((old_hw_features ^ lif->hw_features) & IONIC_ETH_HW_RX_HASH) + ionic_lif_rss_config(lif, lif->rss_types, NULL, NULL); + + if ((vlan_flags & le64_to_cpu(ctx.cmd.lif_setattr.features)) && + !(vlan_flags & le64_to_cpu(ctx.comp.lif_setattr.features))) + dev_info_once(lif->ionic->dev, "NIC is not supporting vlan offload, likely in SmartNIC mode\n"); + + if (lif->hw_features & IONIC_ETH_HW_VLAN_TX_TAG) + dev_dbg(dev, "feature ETH_HW_VLAN_TX_TAG\n"); + if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_STRIP) + dev_dbg(dev, "feature ETH_HW_VLAN_RX_STRIP\n"); + if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_FILTER) + dev_dbg(dev, "feature ETH_HW_VLAN_RX_FILTER\n"); + if (lif->hw_features & IONIC_ETH_HW_RX_HASH) + dev_dbg(dev, "feature ETH_HW_RX_HASH\n"); + if (lif->hw_features & IONIC_ETH_HW_TX_SG) + dev_dbg(dev, "feature ETH_HW_TX_SG\n"); + if (lif->hw_features & IONIC_ETH_HW_TX_CSUM) + dev_dbg(dev, "feature ETH_HW_TX_CSUM\n"); + if (lif->hw_features & IONIC_ETH_HW_RX_CSUM) + dev_dbg(dev, "feature ETH_HW_RX_CSUM\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO) + dev_dbg(dev, "feature ETH_HW_TSO\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO_IPV6) + dev_dbg(dev, "feature ETH_HW_TSO_IPV6\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO_ECN) + dev_dbg(dev, "feature ETH_HW_TSO_ECN\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO_GRE) + dev_dbg(dev, "feature ETH_HW_TSO_GRE\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO_GRE_CSUM) + dev_dbg(dev, "feature ETH_HW_TSO_GRE_CSUM\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP4) + dev_dbg(dev, "feature ETH_HW_TSO_IPXIP4\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP6) + dev_dbg(dev, "feature ETH_HW_TSO_IPXIP6\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO_UDP) + dev_dbg(dev, "feature ETH_HW_TSO_UDP\n"); + if (lif->hw_features & IONIC_ETH_HW_TSO_UDP_CSUM) + dev_dbg(dev, "feature ETH_HW_TSO_UDP_CSUM\n"); + if (lif->hw_features & IONIC_ETH_HW_TIMESTAMP) + dev_dbg(dev, "feature ETH_HW_TIMESTAMP\n"); + + return 0; +} + +static int ionic_init_nic_features(struct ionic_lif *lif) +{ + struct net_device *netdev = lif->netdev; + netdev_features_t features; + int err; + + /* set up what we expect to support by default */ + features = NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_HW_VLAN_CTAG_FILTER | + NETIF_F_SG | + NETIF_F_HW_CSUM | + NETIF_F_RXCSUM | + NETIF_F_TSO | + NETIF_F_TSO6 | + NETIF_F_TSO_ECN; + + if (lif->nxqs > 1) + features |= NETIF_F_RXHASH; + + err = ionic_set_nic_features(lif, features); + if (err) + return err; + + /* tell the netdev what we actually can support */ + netdev->features |= NETIF_F_HIGHDMA; + + if (lif->hw_features & IONIC_ETH_HW_VLAN_TX_TAG) + netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX; + if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_STRIP) + netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX; + if (lif->hw_features & IONIC_ETH_HW_VLAN_RX_FILTER) + netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; + if (lif->hw_features & IONIC_ETH_HW_RX_HASH) + netdev->hw_features |= NETIF_F_RXHASH; + if (lif->hw_features & IONIC_ETH_HW_TX_SG) + netdev->hw_features |= NETIF_F_SG; + + if (lif->hw_features & IONIC_ETH_HW_TX_CSUM) + netdev->hw_enc_features |= NETIF_F_HW_CSUM; + if (lif->hw_features & IONIC_ETH_HW_RX_CSUM) + netdev->hw_enc_features |= NETIF_F_RXCSUM; + if (lif->hw_features & IONIC_ETH_HW_TSO) + netdev->hw_enc_features |= NETIF_F_TSO; + if (lif->hw_features & IONIC_ETH_HW_TSO_IPV6) + netdev->hw_enc_features |= NETIF_F_TSO6; + if (lif->hw_features & IONIC_ETH_HW_TSO_ECN) + netdev->hw_enc_features |= NETIF_F_TSO_ECN; + if (lif->hw_features & IONIC_ETH_HW_TSO_GRE) + netdev->hw_enc_features |= NETIF_F_GSO_GRE; + if (lif->hw_features & IONIC_ETH_HW_TSO_GRE_CSUM) + netdev->hw_enc_features |= NETIF_F_GSO_GRE_CSUM; + if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP4) + netdev->hw_enc_features |= NETIF_F_GSO_IPXIP4; + if (lif->hw_features & IONIC_ETH_HW_TSO_IPXIP6) + netdev->hw_enc_features |= NETIF_F_GSO_IPXIP6; + if (lif->hw_features & IONIC_ETH_HW_TSO_UDP) + netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL; + if (lif->hw_features & IONIC_ETH_HW_TSO_UDP_CSUM) + netdev->hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM; + + netdev->hw_features |= netdev->hw_enc_features; + netdev->features |= netdev->hw_features; + netdev->vlan_features |= netdev->features & ~NETIF_F_VLAN_FEATURES; + + netdev->priv_flags |= IFF_UNICAST_FLT | + IFF_LIVE_ADDR_CHANGE; + + return 0; +} + +static int ionic_set_features(struct net_device *netdev, + netdev_features_t features) +{ + struct ionic_lif *lif = netdev_priv(netdev); + int err; + + netdev_dbg(netdev, "%s: lif->features=0x%08llx new_features=0x%08llx\n", + __func__, (u64)lif->netdev->features, (u64)features); + + err = ionic_set_nic_features(lif, features); + + return err; +} + +static int ionic_set_attr_mac(struct ionic_lif *lif, u8 *mac) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_setattr = { + .opcode = IONIC_CMD_LIF_SETATTR, + .index = cpu_to_le16(lif->index), + .attr = IONIC_LIF_ATTR_MAC, + }, + }; + + ether_addr_copy(ctx.cmd.lif_setattr.mac, mac); + return ionic_adminq_post_wait(lif, &ctx); +} + +static int ionic_get_attr_mac(struct ionic_lif *lif, u8 *mac_addr) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_getattr = { + .opcode = IONIC_CMD_LIF_GETATTR, + .index = cpu_to_le16(lif->index), + .attr = IONIC_LIF_ATTR_MAC, + }, + }; + int err; + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + return err; + + ether_addr_copy(mac_addr, ctx.comp.lif_getattr.mac); + return 0; +} + +static int ionic_program_mac(struct ionic_lif *lif, u8 *mac) +{ + u8 get_mac[ETH_ALEN]; + int err; + + err = ionic_set_attr_mac(lif, mac); + if (err) + return err; + + err = ionic_get_attr_mac(lif, get_mac); + if (err) + return err; + + /* To deal with older firmware that silently ignores the set attr mac: + * doesn't actually change the mac and doesn't return an error, so we + * do the get attr to verify whether or not the set actually happened + */ + if (!ether_addr_equal(get_mac, mac)) + return 1; + + return 0; +} + +static int ionic_set_mac_address(struct net_device *netdev, void *sa) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct sockaddr *addr = sa; + u8 *mac; + int err; + + mac = (u8 *)addr->sa_data; + if (ether_addr_equal(netdev->dev_addr, mac)) + return 0; + + err = ionic_program_mac(lif, mac); + if (err < 0) + return err; + + if (err > 0) + netdev_dbg(netdev, "%s: SET and GET ATTR Mac are not equal-due to old FW running\n", + __func__); + + err = eth_prepare_mac_addr_change(netdev, addr); + if (err) + return err; + + if (!is_zero_ether_addr(netdev->dev_addr)) { + netdev_info(netdev, "deleting mac addr %pM\n", + netdev->dev_addr); + ionic_lif_addr_del(netdev_priv(netdev), netdev->dev_addr); + } + + eth_commit_mac_addr_change(netdev, addr); + netdev_info(netdev, "updating mac addr %pM\n", mac); + + return ionic_lif_addr_add(netdev_priv(netdev), mac); +} + +static void ionic_stop_queues_reconfig(struct ionic_lif *lif) +{ + /* Stop and clean the queues before reconfiguration */ + netif_device_detach(lif->netdev); + ionic_stop_queues(lif); + ionic_txrx_deinit(lif); +} + +static int ionic_start_queues_reconfig(struct ionic_lif *lif) +{ + int err; + + /* Re-init the queues after reconfiguration */ + + /* The only way txrx_init can fail here is if communication + * with FW is suddenly broken. There's not much we can do + * at this point - error messages have already been printed, + * so we can continue on and the user can eventually do a + * DOWN and UP to try to reset and clear the issue. + */ + err = ionic_txrx_init(lif); + ionic_link_status_check_request(lif, CAN_NOT_SLEEP); + netif_device_attach(lif->netdev); + + return err; +} + +static int ionic_change_mtu(struct net_device *netdev, int new_mtu) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_setattr = { + .opcode = IONIC_CMD_LIF_SETATTR, + .index = cpu_to_le16(lif->index), + .attr = IONIC_LIF_ATTR_MTU, + .mtu = cpu_to_le32(new_mtu), + }, + }; + int err; + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + return err; + + /* if we're not running, nothing more to do */ + if (!netif_running(netdev)) { + netdev->mtu = new_mtu; + return 0; + } + + mutex_lock(&lif->queue_lock); + ionic_stop_queues_reconfig(lif); + netdev->mtu = new_mtu; + err = ionic_start_queues_reconfig(lif); + mutex_unlock(&lif->queue_lock); + + return err; +} + +static void ionic_tx_timeout_work(struct work_struct *ws) +{ + struct ionic_lif *lif = container_of(ws, struct ionic_lif, tx_timeout_work); + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return; + + /* if we were stopped before this scheduled job was launched, + * don't bother the queues as they are already stopped. + */ + if (!netif_running(lif->netdev)) + return; + + mutex_lock(&lif->queue_lock); + ionic_stop_queues_reconfig(lif); + ionic_start_queues_reconfig(lif); + mutex_unlock(&lif->queue_lock); +} + +static void ionic_tx_timeout(struct net_device *netdev, unsigned int txqueue) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + netdev_info(lif->netdev, "Tx Timeout triggered - txq %d\n", txqueue); + schedule_work(&lif->tx_timeout_work); +} + +static int ionic_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, + u16 vid) +{ + struct ionic_lif *lif = netdev_priv(netdev); + int err; + + err = ionic_lif_vlan_add(lif, vid); + if (err) + return err; + + ionic_lif_rx_mode(lif); + + return 0; +} + +static int ionic_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, + u16 vid) +{ + struct ionic_lif *lif = netdev_priv(netdev); + int err; + + err = ionic_lif_vlan_del(lif, vid); + if (err) + return err; + + ionic_lif_rx_mode(lif); + + return 0; +} + +int ionic_lif_rss_config(struct ionic_lif *lif, const u16 types, + const u8 *key, const u32 *indir) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_setattr = { + .opcode = IONIC_CMD_LIF_SETATTR, + .attr = IONIC_LIF_ATTR_RSS, + .rss.addr = cpu_to_le64(lif->rss_ind_tbl_pa), + }, + }; + unsigned int i, tbl_sz; + + if (lif->hw_features & IONIC_ETH_HW_RX_HASH) { + lif->rss_types = types; + ctx.cmd.lif_setattr.rss.types = cpu_to_le16(types); + } + + if (key) + memcpy(lif->rss_hash_key, key, IONIC_RSS_HASH_KEY_SIZE); + + if (indir) { + tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); + for (i = 0; i < tbl_sz; i++) + lif->rss_ind_tbl[i] = indir[i]; + } + + memcpy(ctx.cmd.lif_setattr.rss.key, lif->rss_hash_key, + IONIC_RSS_HASH_KEY_SIZE); + + return ionic_adminq_post_wait(lif, &ctx); +} + +static int ionic_lif_rss_init(struct ionic_lif *lif) +{ + unsigned int tbl_sz; + unsigned int i; + + lif->rss_types = IONIC_RSS_TYPE_IPV4 | + IONIC_RSS_TYPE_IPV4_TCP | + IONIC_RSS_TYPE_IPV4_UDP | + IONIC_RSS_TYPE_IPV6 | + IONIC_RSS_TYPE_IPV6_TCP | + IONIC_RSS_TYPE_IPV6_UDP; + + /* Fill indirection table with 'default' values */ + tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); + for (i = 0; i < tbl_sz; i++) + lif->rss_ind_tbl[i] = ethtool_rxfh_indir_default(i, lif->nxqs); + + return ionic_lif_rss_config(lif, lif->rss_types, NULL, NULL); +} + +static void ionic_lif_rss_deinit(struct ionic_lif *lif) +{ + int tbl_sz; + + tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); + memset(lif->rss_ind_tbl, 0, tbl_sz); + memset(lif->rss_hash_key, 0, IONIC_RSS_HASH_KEY_SIZE); + + ionic_lif_rss_config(lif, 0x0, NULL, NULL); +} + +static void ionic_lif_quiesce(struct ionic_lif *lif) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_setattr = { + .opcode = IONIC_CMD_LIF_SETATTR, + .index = cpu_to_le16(lif->index), + .attr = IONIC_LIF_ATTR_STATE, + .state = IONIC_LIF_QUIESCE, + }, + }; + int err; + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + netdev_dbg(lif->netdev, "lif quiesce failed %d\n", err); +} + +static void ionic_txrx_disable(struct ionic_lif *lif) +{ + unsigned int i; + int err = 0; + + if (lif->txqcqs) { + for (i = 0; i < lif->nxqs; i++) + err = ionic_qcq_disable(lif, lif->txqcqs[i], err); + } + + if (lif->hwstamp_txq) + err = ionic_qcq_disable(lif, lif->hwstamp_txq, err); + + if (lif->rxqcqs) { + for (i = 0; i < lif->nxqs; i++) + err = ionic_qcq_disable(lif, lif->rxqcqs[i], err); + } + + if (lif->hwstamp_rxq) + err = ionic_qcq_disable(lif, lif->hwstamp_rxq, err); + + ionic_lif_quiesce(lif); +} + +static void ionic_txrx_deinit(struct ionic_lif *lif) +{ + unsigned int i; + + if (lif->txqcqs) { + for (i = 0; i < lif->nxqs && lif->txqcqs[i]; i++) { + ionic_lif_qcq_deinit(lif, lif->txqcqs[i]); + ionic_tx_flush(&lif->txqcqs[i]->cq); + ionic_tx_empty(&lif->txqcqs[i]->q); + } + } + + if (lif->rxqcqs) { + for (i = 0; i < lif->nxqs && lif->rxqcqs[i]; i++) { + ionic_lif_qcq_deinit(lif, lif->rxqcqs[i]); + ionic_rx_empty(&lif->rxqcqs[i]->q); + } + } + lif->rx_mode = 0; + + if (lif->hwstamp_txq) { + ionic_lif_qcq_deinit(lif, lif->hwstamp_txq); + ionic_tx_flush(&lif->hwstamp_txq->cq); + ionic_tx_empty(&lif->hwstamp_txq->q); + } + + if (lif->hwstamp_rxq) { + ionic_lif_qcq_deinit(lif, lif->hwstamp_rxq); + ionic_rx_empty(&lif->hwstamp_rxq->q); + } +} + +static void ionic_txrx_free(struct ionic_lif *lif) +{ + unsigned int i; + + if (lif->txqcqs) { + for (i = 0; i < lif->ionic->ntxqs_per_lif && lif->txqcqs[i]; i++) { + ionic_qcq_free(lif, lif->txqcqs[i]); + devm_kfree(lif->ionic->dev, lif->txqcqs[i]); + lif->txqcqs[i] = NULL; + } + } + + if (lif->rxqcqs) { + for (i = 0; i < lif->ionic->nrxqs_per_lif && lif->rxqcqs[i]; i++) { + ionic_qcq_free(lif, lif->rxqcqs[i]); + devm_kfree(lif->ionic->dev, lif->rxqcqs[i]); + lif->rxqcqs[i] = NULL; + } + } + + if (lif->hwstamp_txq) { + ionic_qcq_free(lif, lif->hwstamp_txq); + devm_kfree(lif->ionic->dev, lif->hwstamp_txq); + lif->hwstamp_txq = NULL; + } + + if (lif->hwstamp_rxq) { + ionic_qcq_free(lif, lif->hwstamp_rxq); + devm_kfree(lif->ionic->dev, lif->hwstamp_rxq); + lif->hwstamp_rxq = NULL; + } +} + +static int ionic_txrx_alloc(struct ionic_lif *lif) +{ + unsigned int comp_sz, desc_sz, num_desc, sg_desc_sz; + unsigned int flags, i; + int err = 0; + + num_desc = lif->ntxq_descs; + desc_sz = sizeof(struct ionic_txq_desc); + comp_sz = sizeof(struct ionic_txq_comp); + + if (lif->qtype_info[IONIC_QTYPE_TXQ].version >= 1 && + lif->qtype_info[IONIC_QTYPE_TXQ].sg_desc_sz == + sizeof(struct ionic_txq_sg_desc_v1)) + sg_desc_sz = sizeof(struct ionic_txq_sg_desc_v1); + else + sg_desc_sz = sizeof(struct ionic_txq_sg_desc); + + flags = IONIC_QCQ_F_TX_STATS | IONIC_QCQ_F_SG; + if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) + flags |= IONIC_QCQ_F_INTR; + for (i = 0; i < lif->nxqs; i++) { + err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, i, "tx", flags, + num_desc, desc_sz, comp_sz, sg_desc_sz, + lif->kern_pid, &lif->txqcqs[i]); + if (err) + goto err_out; + + if (flags & IONIC_QCQ_F_INTR) { + ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, + lif->txqcqs[i]->intr.index, + lif->tx_coalesce_hw); + if (test_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state)) + lif->txqcqs[i]->intr.dim_coal_hw = lif->tx_coalesce_hw; + } + + ionic_debugfs_add_qcq(lif, lif->txqcqs[i]); + } + + flags = IONIC_QCQ_F_RX_STATS | IONIC_QCQ_F_SG | IONIC_QCQ_F_INTR; + + num_desc = lif->nrxq_descs; + desc_sz = sizeof(struct ionic_rxq_desc); + comp_sz = sizeof(struct ionic_rxq_comp); + sg_desc_sz = sizeof(struct ionic_rxq_sg_desc); + + if (lif->rxq_features & IONIC_Q_F_2X_CQ_DESC) + comp_sz *= 2; + + for (i = 0; i < lif->nxqs; i++) { + err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, i, "rx", flags, + num_desc, desc_sz, comp_sz, sg_desc_sz, + lif->kern_pid, &lif->rxqcqs[i]); + if (err) + goto err_out; + + lif->rxqcqs[i]->q.features = lif->rxq_features; + + ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, + lif->rxqcqs[i]->intr.index, + lif->rx_coalesce_hw); + if (test_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state)) + lif->rxqcqs[i]->intr.dim_coal_hw = lif->rx_coalesce_hw; + + if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) + ionic_link_qcq_interrupts(lif->rxqcqs[i], + lif->txqcqs[i]); + + ionic_debugfs_add_qcq(lif, lif->rxqcqs[i]); + } + + return 0; + +err_out: + ionic_txrx_free(lif); + + return err; +} + +static int ionic_txrx_init(struct ionic_lif *lif) +{ + unsigned int i; + int err; + + for (i = 0; i < lif->nxqs; i++) { + err = ionic_lif_txq_init(lif, lif->txqcqs[i]); + if (err) + goto err_out; + + err = ionic_lif_rxq_init(lif, lif->rxqcqs[i]); + if (err) { + ionic_lif_qcq_deinit(lif, lif->txqcqs[i]); + goto err_out; + } + } + + if (lif->netdev->features & NETIF_F_RXHASH) + ionic_lif_rss_init(lif); + + ionic_lif_rx_mode(lif); + + return 0; + +err_out: + while (i--) { + ionic_lif_qcq_deinit(lif, lif->txqcqs[i]); + ionic_lif_qcq_deinit(lif, lif->rxqcqs[i]); + } + + return err; +} + +static int ionic_txrx_enable(struct ionic_lif *lif) +{ + int derr = 0; + int i, err; + + for (i = 0; i < lif->nxqs; i++) { + if (!(lif->rxqcqs[i] && lif->txqcqs[i])) { + dev_err(lif->ionic->dev, "%s: bad qcq %d\n", __func__, i); + err = -ENXIO; + goto err_out; + } + + ionic_rx_fill(&lif->rxqcqs[i]->q); + err = ionic_qcq_enable(lif->rxqcqs[i]); + if (err) + goto err_out; + + err = ionic_qcq_enable(lif->txqcqs[i]); + if (err) { + derr = ionic_qcq_disable(lif, lif->rxqcqs[i], err); + goto err_out; + } + } + + if (lif->hwstamp_rxq) { + ionic_rx_fill(&lif->hwstamp_rxq->q); + err = ionic_qcq_enable(lif->hwstamp_rxq); + if (err) + goto err_out_hwstamp_rx; + } + + if (lif->hwstamp_txq) { + err = ionic_qcq_enable(lif->hwstamp_txq); + if (err) + goto err_out_hwstamp_tx; + } + + return 0; + +err_out_hwstamp_tx: + if (lif->hwstamp_rxq) + derr = ionic_qcq_disable(lif, lif->hwstamp_rxq, derr); +err_out_hwstamp_rx: + i = lif->nxqs; +err_out: + while (i--) { + derr = ionic_qcq_disable(lif, lif->txqcqs[i], derr); + derr = ionic_qcq_disable(lif, lif->rxqcqs[i], derr); + } + + return err; +} + +static int ionic_start_queues(struct ionic_lif *lif) +{ + int err; + + if (test_bit(IONIC_LIF_F_BROKEN, lif->state)) + return -EIO; + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return -EBUSY; + + if (test_and_set_bit(IONIC_LIF_F_UP, lif->state)) + return 0; + + err = ionic_txrx_enable(lif); + if (err) { + clear_bit(IONIC_LIF_F_UP, lif->state); + return err; + } + netif_tx_wake_all_queues(lif->netdev); + + return 0; +} + +static int ionic_open(struct net_device *netdev) +{ + struct ionic_lif *lif = netdev_priv(netdev); + int err; + + /* If recovering from a broken state, clear the bit and we'll try again */ + if (test_and_clear_bit(IONIC_LIF_F_BROKEN, lif->state)) + netdev_info(netdev, "clearing broken state\n"); + + mutex_lock(&lif->queue_lock); + + err = ionic_txrx_alloc(lif); + if (err) + goto err_unlock; + + err = ionic_txrx_init(lif); + if (err) + goto err_txrx_free; + + err = netif_set_real_num_tx_queues(netdev, lif->nxqs); + if (err) + goto err_txrx_deinit; + + err = netif_set_real_num_rx_queues(netdev, lif->nxqs); + if (err) + goto err_txrx_deinit; + + /* don't start the queues until we have link */ + if (netif_carrier_ok(netdev)) { + err = ionic_start_queues(lif); + if (err) + goto err_txrx_deinit; + } + + /* If hardware timestamping is enabled, but the queues were freed by + * ionic_stop, those need to be reallocated and initialized, too. + */ + ionic_lif_hwstamp_recreate_queues(lif); + + mutex_unlock(&lif->queue_lock); + + return 0; + +err_txrx_deinit: + ionic_txrx_deinit(lif); +err_txrx_free: + ionic_txrx_free(lif); +err_unlock: + mutex_unlock(&lif->queue_lock); + return err; +} + +static void ionic_stop_queues(struct ionic_lif *lif) +{ + if (!test_and_clear_bit(IONIC_LIF_F_UP, lif->state)) + return; + + netif_tx_disable(lif->netdev); + ionic_txrx_disable(lif); +} + +static int ionic_stop(struct net_device *netdev) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return 0; + + mutex_lock(&lif->queue_lock); + ionic_stop_queues(lif); + ionic_txrx_deinit(lif); + ionic_txrx_free(lif); + mutex_unlock(&lif->queue_lock); + + return 0; +} + +static int ionic_eth_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) +{ + struct ionic_lif *lif = netdev_priv(netdev); + + switch (cmd) { + case SIOCSHWTSTAMP: + return ionic_lif_hwstamp_set(lif, ifr); + case SIOCGHWTSTAMP: + return ionic_lif_hwstamp_get(lif, ifr); + default: + return -EOPNOTSUPP; + } +} + +static int ionic_update_cached_vf_config(struct ionic *ionic, int vf) +{ + struct ionic_vf_getattr_comp comp = { 0 }; + int err; + u8 attr; + + attr = IONIC_VF_ATTR_VLAN; + err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); + if (err && comp.status != IONIC_RC_ENOSUPP) + goto err_out; + if (!err) + ionic->vfs[vf].vlanid = comp.vlanid; + + attr = IONIC_VF_ATTR_SPOOFCHK; + err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); + if (err && comp.status != IONIC_RC_ENOSUPP) + goto err_out; + if (!err) + ionic->vfs[vf].spoofchk = comp.spoofchk; + + attr = IONIC_VF_ATTR_LINKSTATE; + err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); + if (err && comp.status != IONIC_RC_ENOSUPP) + goto err_out; + if (!err) { + switch (comp.linkstate) { + case IONIC_VF_LINK_STATUS_UP: + ionic->vfs[vf].linkstate = IFLA_VF_LINK_STATE_ENABLE; + break; + case IONIC_VF_LINK_STATUS_DOWN: + ionic->vfs[vf].linkstate = IFLA_VF_LINK_STATE_DISABLE; + break; + case IONIC_VF_LINK_STATUS_AUTO: + ionic->vfs[vf].linkstate = IFLA_VF_LINK_STATE_AUTO; + break; + default: + dev_warn(ionic->dev, "Unexpected link state %u\n", comp.linkstate); + break; + } + } + + attr = IONIC_VF_ATTR_RATE; + err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); + if (err && comp.status != IONIC_RC_ENOSUPP) + goto err_out; + if (!err) + ionic->vfs[vf].maxrate = comp.maxrate; + + attr = IONIC_VF_ATTR_TRUST; + err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); + if (err && comp.status != IONIC_RC_ENOSUPP) + goto err_out; + if (!err) + ionic->vfs[vf].trusted = comp.trust; + + attr = IONIC_VF_ATTR_MAC; + err = ionic_dev_cmd_vf_getattr(ionic, vf, attr, &comp); + if (err && comp.status != IONIC_RC_ENOSUPP) + goto err_out; + if (!err) + ether_addr_copy(ionic->vfs[vf].macaddr, comp.macaddr); + +err_out: + if (err) + dev_err(ionic->dev, "Failed to get %s for VF %d\n", + ionic_vf_attr_to_str(attr), vf); + + return err; +} + +static int ionic_get_vf_config(struct net_device *netdev, + int vf, struct ifla_vf_info *ivf) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + int ret = 0; + + if (!netif_device_present(netdev)) + return -EBUSY; + + down_read(&ionic->vf_op_lock); + + if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { + ret = -EINVAL; + } else { + ivf->vf = vf; + ivf->qos = 0; + + ret = ionic_update_cached_vf_config(ionic, vf); + if (!ret) { + ivf->vlan = le16_to_cpu(ionic->vfs[vf].vlanid); + ivf->spoofchk = ionic->vfs[vf].spoofchk; + ivf->linkstate = ionic->vfs[vf].linkstate; + ivf->max_tx_rate = le32_to_cpu(ionic->vfs[vf].maxrate); + ivf->trusted = ionic->vfs[vf].trusted; + ether_addr_copy(ivf->mac, ionic->vfs[vf].macaddr); + } + } + + up_read(&ionic->vf_op_lock); + return ret; +} + +static int ionic_get_vf_stats(struct net_device *netdev, int vf, + struct ifla_vf_stats *vf_stats) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + struct ionic_lif_stats *vs; + int ret = 0; + + if (!netif_device_present(netdev)) + return -EBUSY; + + down_read(&ionic->vf_op_lock); + + if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { + ret = -EINVAL; + } else { + memset(vf_stats, 0, sizeof(*vf_stats)); + vs = &ionic->vfs[vf].stats; + + vf_stats->rx_packets = le64_to_cpu(vs->rx_ucast_packets); + vf_stats->tx_packets = le64_to_cpu(vs->tx_ucast_packets); + vf_stats->rx_bytes = le64_to_cpu(vs->rx_ucast_bytes); + vf_stats->tx_bytes = le64_to_cpu(vs->tx_ucast_bytes); + vf_stats->broadcast = le64_to_cpu(vs->rx_bcast_packets); + vf_stats->multicast = le64_to_cpu(vs->rx_mcast_packets); + vf_stats->rx_dropped = le64_to_cpu(vs->rx_ucast_drop_packets) + + le64_to_cpu(vs->rx_mcast_drop_packets) + + le64_to_cpu(vs->rx_bcast_drop_packets); + vf_stats->tx_dropped = le64_to_cpu(vs->tx_ucast_drop_packets) + + le64_to_cpu(vs->tx_mcast_drop_packets) + + le64_to_cpu(vs->tx_bcast_drop_packets); + } + + up_read(&ionic->vf_op_lock); + return ret; +} + +static int ionic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) +{ + struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_MAC }; + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + int ret; + + if (!(is_zero_ether_addr(mac) || is_valid_ether_addr(mac))) + return -EINVAL; + + if (!netif_device_present(netdev)) + return -EBUSY; + + down_write(&ionic->vf_op_lock); + + if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { + ret = -EINVAL; + } else { + ether_addr_copy(vfc.macaddr, mac); + dev_dbg(ionic->dev, "%s: vf %d macaddr %pM\n", + __func__, vf, vfc.macaddr); + + ret = ionic_set_vf_config(ionic, vf, &vfc); + if (!ret) + ether_addr_copy(ionic->vfs[vf].macaddr, mac); + } + + up_write(&ionic->vf_op_lock); + return ret; +} + +static int ionic_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, + u8 qos, __be16 proto) +{ + struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_VLAN }; + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + int ret; + + /* until someday when we support qos */ + if (qos) + return -EINVAL; + + if (vlan > 4095) + return -EINVAL; + + if (proto != htons(ETH_P_8021Q)) + return -EPROTONOSUPPORT; + + if (!netif_device_present(netdev)) + return -EBUSY; + + down_write(&ionic->vf_op_lock); + + if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { + ret = -EINVAL; + } else { + vfc.vlanid = cpu_to_le16(vlan); + dev_dbg(ionic->dev, "%s: vf %d vlan %d\n", + __func__, vf, le16_to_cpu(vfc.vlanid)); + + ret = ionic_set_vf_config(ionic, vf, &vfc); + if (!ret) + ionic->vfs[vf].vlanid = cpu_to_le16(vlan); + } + + up_write(&ionic->vf_op_lock); + return ret; +} + +static int ionic_set_vf_rate(struct net_device *netdev, int vf, + int tx_min, int tx_max) +{ + struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_RATE }; + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + int ret; + + /* setting the min just seems silly */ + if (tx_min) + return -EINVAL; + + if (!netif_device_present(netdev)) + return -EBUSY; + + down_write(&ionic->vf_op_lock); + + if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { + ret = -EINVAL; + } else { + vfc.maxrate = cpu_to_le32(tx_max); + dev_dbg(ionic->dev, "%s: vf %d maxrate %d\n", + __func__, vf, le32_to_cpu(vfc.maxrate)); + + ret = ionic_set_vf_config(ionic, vf, &vfc); + if (!ret) + lif->ionic->vfs[vf].maxrate = cpu_to_le32(tx_max); + } + + up_write(&ionic->vf_op_lock); + return ret; +} + +static int ionic_set_vf_spoofchk(struct net_device *netdev, int vf, bool set) +{ + struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_SPOOFCHK }; + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + int ret; + + if (!netif_device_present(netdev)) + return -EBUSY; + + down_write(&ionic->vf_op_lock); + + if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { + ret = -EINVAL; + } else { + vfc.spoofchk = set; + dev_dbg(ionic->dev, "%s: vf %d spoof %d\n", + __func__, vf, vfc.spoofchk); + + ret = ionic_set_vf_config(ionic, vf, &vfc); + if (!ret) + ionic->vfs[vf].spoofchk = set; + } + + up_write(&ionic->vf_op_lock); + return ret; +} + +static int ionic_set_vf_trust(struct net_device *netdev, int vf, bool set) +{ + struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_TRUST }; + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + int ret; + + if (!netif_device_present(netdev)) + return -EBUSY; + + down_write(&ionic->vf_op_lock); + + if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { + ret = -EINVAL; + } else { + vfc.trust = set; + dev_dbg(ionic->dev, "%s: vf %d trust %d\n", + __func__, vf, vfc.trust); + + ret = ionic_set_vf_config(ionic, vf, &vfc); + if (!ret) + ionic->vfs[vf].trusted = set; + } + + up_write(&ionic->vf_op_lock); + return ret; +} + +static int ionic_set_vf_link_state(struct net_device *netdev, int vf, int set) +{ + struct ionic_vf_setattr_cmd vfc = { .attr = IONIC_VF_ATTR_LINKSTATE }; + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic *ionic = lif->ionic; + u8 vfls; + int ret; + + switch (set) { + case IFLA_VF_LINK_STATE_ENABLE: + vfls = IONIC_VF_LINK_STATUS_UP; + break; + case IFLA_VF_LINK_STATE_DISABLE: + vfls = IONIC_VF_LINK_STATUS_DOWN; + break; + case IFLA_VF_LINK_STATE_AUTO: + vfls = IONIC_VF_LINK_STATUS_AUTO; + break; + default: + return -EINVAL; + } + + if (!netif_device_present(netdev)) + return -EBUSY; + + down_write(&ionic->vf_op_lock); + + if (vf >= pci_num_vf(ionic->pdev) || !ionic->vfs) { + ret = -EINVAL; + } else { + vfc.linkstate = vfls; + dev_dbg(ionic->dev, "%s: vf %d linkstate %d\n", + __func__, vf, vfc.linkstate); + + ret = ionic_set_vf_config(ionic, vf, &vfc); + if (!ret) + ionic->vfs[vf].linkstate = set; + } + + up_write(&ionic->vf_op_lock); + return ret; +} + +static const struct net_device_ops ionic_netdev_ops = { + .ndo_open = ionic_open, + .ndo_stop = ionic_stop, + .ndo_eth_ioctl = ionic_eth_ioctl, + .ndo_start_xmit = ionic_start_xmit, + .ndo_get_stats64 = ionic_get_stats64, + .ndo_set_rx_mode = ionic_ndo_set_rx_mode, + .ndo_set_features = ionic_set_features, + .ndo_set_mac_address = ionic_set_mac_address, + .ndo_validate_addr = eth_validate_addr, + .ndo_tx_timeout = ionic_tx_timeout, + .ndo_change_mtu = ionic_change_mtu, + .ndo_vlan_rx_add_vid = ionic_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = ionic_vlan_rx_kill_vid, + .ndo_set_vf_vlan = ionic_set_vf_vlan, + .ndo_set_vf_trust = ionic_set_vf_trust, + .ndo_set_vf_mac = ionic_set_vf_mac, + .ndo_set_vf_rate = ionic_set_vf_rate, + .ndo_set_vf_spoofchk = ionic_set_vf_spoofchk, + .ndo_get_vf_config = ionic_get_vf_config, + .ndo_set_vf_link_state = ionic_set_vf_link_state, + .ndo_get_vf_stats = ionic_get_vf_stats, +}; + +static void ionic_swap_queues(struct ionic_qcq *a, struct ionic_qcq *b) +{ + /* only swapping the queues, not the napi, flags, or other stuff */ + swap(a->q.features, b->q.features); + swap(a->q.num_descs, b->q.num_descs); + swap(a->q.desc_size, b->q.desc_size); + swap(a->q.base, b->q.base); + swap(a->q.base_pa, b->q.base_pa); + swap(a->q.info, b->q.info); + swap(a->q_base, b->q_base); + swap(a->q_base_pa, b->q_base_pa); + swap(a->q_size, b->q_size); + + swap(a->q.sg_desc_size, b->q.sg_desc_size); + swap(a->q.sg_base, b->q.sg_base); + swap(a->q.sg_base_pa, b->q.sg_base_pa); + swap(a->sg_base, b->sg_base); + swap(a->sg_base_pa, b->sg_base_pa); + swap(a->sg_size, b->sg_size); + + swap(a->cq.num_descs, b->cq.num_descs); + swap(a->cq.desc_size, b->cq.desc_size); + swap(a->cq.base, b->cq.base); + swap(a->cq.base_pa, b->cq.base_pa); + swap(a->cq.info, b->cq.info); + swap(a->cq_base, b->cq_base); + swap(a->cq_base_pa, b->cq_base_pa); + swap(a->cq_size, b->cq_size); + + ionic_debugfs_del_qcq(a); + ionic_debugfs_add_qcq(a->q.lif, a); +} + +int ionic_reconfigure_queues(struct ionic_lif *lif, + struct ionic_queue_params *qparam) +{ + unsigned int comp_sz, desc_sz, num_desc, sg_desc_sz; + struct ionic_qcq **tx_qcqs = NULL; + struct ionic_qcq **rx_qcqs = NULL; + unsigned int flags, i; + int err = 0; + + /* allocate temporary qcq arrays to hold new queue structs */ + if (qparam->nxqs != lif->nxqs || qparam->ntxq_descs != lif->ntxq_descs) { + tx_qcqs = devm_kcalloc(lif->ionic->dev, lif->ionic->ntxqs_per_lif, + sizeof(struct ionic_qcq *), GFP_KERNEL); + if (!tx_qcqs) { + err = -ENOMEM; + goto err_out; + } + } + if (qparam->nxqs != lif->nxqs || + qparam->nrxq_descs != lif->nrxq_descs || + qparam->rxq_features != lif->rxq_features) { + rx_qcqs = devm_kcalloc(lif->ionic->dev, lif->ionic->nrxqs_per_lif, + sizeof(struct ionic_qcq *), GFP_KERNEL); + if (!rx_qcqs) { + err = -ENOMEM; + goto err_out; + } + } + + /* allocate new desc_info and rings, but leave the interrupt setup + * until later so as to not mess with the still-running queues + */ + if (tx_qcqs) { + num_desc = qparam->ntxq_descs; + desc_sz = sizeof(struct ionic_txq_desc); + comp_sz = sizeof(struct ionic_txq_comp); + + if (lif->qtype_info[IONIC_QTYPE_TXQ].version >= 1 && + lif->qtype_info[IONIC_QTYPE_TXQ].sg_desc_sz == + sizeof(struct ionic_txq_sg_desc_v1)) + sg_desc_sz = sizeof(struct ionic_txq_sg_desc_v1); + else + sg_desc_sz = sizeof(struct ionic_txq_sg_desc); + + for (i = 0; i < qparam->nxqs; i++) { + flags = lif->txqcqs[i]->flags & ~IONIC_QCQ_F_INTR; + err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, i, "tx", flags, + num_desc, desc_sz, comp_sz, sg_desc_sz, + lif->kern_pid, &tx_qcqs[i]); + if (err) + goto err_out; + } + } + + if (rx_qcqs) { + num_desc = qparam->nrxq_descs; + desc_sz = sizeof(struct ionic_rxq_desc); + comp_sz = sizeof(struct ionic_rxq_comp); + sg_desc_sz = sizeof(struct ionic_rxq_sg_desc); + + if (qparam->rxq_features & IONIC_Q_F_2X_CQ_DESC) + comp_sz *= 2; + + for (i = 0; i < qparam->nxqs; i++) { + flags = lif->rxqcqs[i]->flags & ~IONIC_QCQ_F_INTR; + err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, i, "rx", flags, + num_desc, desc_sz, comp_sz, sg_desc_sz, + lif->kern_pid, &rx_qcqs[i]); + if (err) + goto err_out; + + rx_qcqs[i]->q.features = qparam->rxq_features; + } + } + + /* stop and clean the queues */ + ionic_stop_queues_reconfig(lif); + + if (qparam->nxqs != lif->nxqs) { + err = netif_set_real_num_tx_queues(lif->netdev, qparam->nxqs); + if (err) + goto err_out_reinit_unlock; + err = netif_set_real_num_rx_queues(lif->netdev, qparam->nxqs); + if (err) { + netif_set_real_num_tx_queues(lif->netdev, lif->nxqs); + goto err_out_reinit_unlock; + } + } + + /* swap new desc_info and rings, keeping existing interrupt config */ + if (tx_qcqs) { + lif->ntxq_descs = qparam->ntxq_descs; + for (i = 0; i < qparam->nxqs; i++) + ionic_swap_queues(lif->txqcqs[i], tx_qcqs[i]); + } + + if (rx_qcqs) { + lif->nrxq_descs = qparam->nrxq_descs; + for (i = 0; i < qparam->nxqs; i++) + ionic_swap_queues(lif->rxqcqs[i], rx_qcqs[i]); + } + + /* if we need to change the interrupt layout, this is the time */ + if (qparam->intr_split != test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state) || + qparam->nxqs != lif->nxqs) { + if (qparam->intr_split) { + set_bit(IONIC_LIF_F_SPLIT_INTR, lif->state); + } else { + clear_bit(IONIC_LIF_F_SPLIT_INTR, lif->state); + lif->tx_coalesce_usecs = lif->rx_coalesce_usecs; + lif->tx_coalesce_hw = lif->rx_coalesce_hw; + } + + /* clear existing interrupt assignments */ + for (i = 0; i < lif->ionic->ntxqs_per_lif; i++) { + ionic_qcq_intr_free(lif, lif->txqcqs[i]); + ionic_qcq_intr_free(lif, lif->rxqcqs[i]); + } + + /* re-assign the interrupts */ + for (i = 0; i < qparam->nxqs; i++) { + lif->rxqcqs[i]->flags |= IONIC_QCQ_F_INTR; + err = ionic_alloc_qcq_interrupt(lif, lif->rxqcqs[i]); + ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, + lif->rxqcqs[i]->intr.index, + lif->rx_coalesce_hw); + + if (qparam->intr_split) { + lif->txqcqs[i]->flags |= IONIC_QCQ_F_INTR; + err = ionic_alloc_qcq_interrupt(lif, lif->txqcqs[i]); + ionic_intr_coal_init(lif->ionic->idev.intr_ctrl, + lif->txqcqs[i]->intr.index, + lif->tx_coalesce_hw); + if (test_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state)) + lif->txqcqs[i]->intr.dim_coal_hw = lif->tx_coalesce_hw; + } else { + lif->txqcqs[i]->flags &= ~IONIC_QCQ_F_INTR; + ionic_link_qcq_interrupts(lif->rxqcqs[i], lif->txqcqs[i]); + } + } + } + + /* now we can rework the debugfs mappings */ + if (tx_qcqs) { + for (i = 0; i < qparam->nxqs; i++) { + ionic_debugfs_del_qcq(lif->txqcqs[i]); + ionic_debugfs_add_qcq(lif, lif->txqcqs[i]); + } + } + + if (rx_qcqs) { + for (i = 0; i < qparam->nxqs; i++) { + ionic_debugfs_del_qcq(lif->rxqcqs[i]); + ionic_debugfs_add_qcq(lif, lif->rxqcqs[i]); + } + } + + swap(lif->nxqs, qparam->nxqs); + swap(lif->rxq_features, qparam->rxq_features); + +err_out_reinit_unlock: + /* re-init the queues, but don't lose an error code */ + if (err) + ionic_start_queues_reconfig(lif); + else + err = ionic_start_queues_reconfig(lif); + +err_out: + /* free old allocs without cleaning intr */ + for (i = 0; i < qparam->nxqs; i++) { + if (tx_qcqs && tx_qcqs[i]) { + tx_qcqs[i]->flags &= ~IONIC_QCQ_F_INTR; + ionic_qcq_free(lif, tx_qcqs[i]); + devm_kfree(lif->ionic->dev, tx_qcqs[i]); + tx_qcqs[i] = NULL; + } + if (rx_qcqs && rx_qcqs[i]) { + rx_qcqs[i]->flags &= ~IONIC_QCQ_F_INTR; + ionic_qcq_free(lif, rx_qcqs[i]); + devm_kfree(lif->ionic->dev, rx_qcqs[i]); + rx_qcqs[i] = NULL; + } + } + + /* free q array */ + if (rx_qcqs) { + devm_kfree(lif->ionic->dev, rx_qcqs); + rx_qcqs = NULL; + } + if (tx_qcqs) { + devm_kfree(lif->ionic->dev, tx_qcqs); + tx_qcqs = NULL; + } + + /* clean the unused dma and info allocations when new set is smaller + * than the full array, but leave the qcq shells in place + */ + for (i = lif->nxqs; i < lif->ionic->ntxqs_per_lif; i++) { + if (lif->txqcqs && lif->txqcqs[i]) { + lif->txqcqs[i]->flags &= ~IONIC_QCQ_F_INTR; + ionic_qcq_free(lif, lif->txqcqs[i]); + } + + if (lif->rxqcqs && lif->rxqcqs[i]) { + lif->rxqcqs[i]->flags &= ~IONIC_QCQ_F_INTR; + ionic_qcq_free(lif, lif->rxqcqs[i]); + } + } + + if (err) + netdev_info(lif->netdev, "%s: failed %d\n", __func__, err); + + return err; +} + +int ionic_lif_alloc(struct ionic *ionic) +{ + struct device *dev = ionic->dev; + union ionic_lif_identity *lid; + struct net_device *netdev; + struct ionic_lif *lif; + int tbl_sz; + int err; + + lid = kzalloc(sizeof(*lid), GFP_KERNEL); + if (!lid) + return -ENOMEM; + + netdev = alloc_etherdev_mqs(sizeof(*lif), + ionic->ntxqs_per_lif, ionic->ntxqs_per_lif); + if (!netdev) { + dev_err(dev, "Cannot allocate netdev, aborting\n"); + err = -ENOMEM; + goto err_out_free_lid; + } + + SET_NETDEV_DEV(netdev, dev); + + lif = netdev_priv(netdev); + lif->netdev = netdev; + ionic->lif = lif; + netdev->netdev_ops = &ionic_netdev_ops; + ionic_ethtool_set_ops(netdev); + + netdev->watchdog_timeo = 2 * HZ; + netif_carrier_off(netdev); + + lif->identity = lid; + lif->lif_type = IONIC_LIF_TYPE_CLASSIC; + err = ionic_lif_identify(ionic, lif->lif_type, lif->identity); + if (err) { + dev_err(ionic->dev, "Cannot identify type %d: %d\n", + lif->lif_type, err); + goto err_out_free_netdev; + } + lif->netdev->min_mtu = max_t(unsigned int, ETH_MIN_MTU, + le32_to_cpu(lif->identity->eth.min_frame_size)); + lif->netdev->max_mtu = + le32_to_cpu(lif->identity->eth.max_frame_size) - ETH_HLEN - VLAN_HLEN; + + lif->neqs = ionic->neqs_per_lif; + lif->nxqs = ionic->ntxqs_per_lif; + + lif->ionic = ionic; + lif->index = 0; + + if (is_kdump_kernel()) { + lif->ntxq_descs = IONIC_MIN_TXRX_DESC; + lif->nrxq_descs = IONIC_MIN_TXRX_DESC; + } else { + lif->ntxq_descs = IONIC_DEF_TXRX_DESC; + lif->nrxq_descs = IONIC_DEF_TXRX_DESC; + } + + /* Convert the default coalesce value to actual hw resolution */ + lif->rx_coalesce_usecs = IONIC_ITR_COAL_USEC_DEFAULT; + lif->rx_coalesce_hw = ionic_coal_usec_to_hw(lif->ionic, + lif->rx_coalesce_usecs); + lif->tx_coalesce_usecs = lif->rx_coalesce_usecs; + lif->tx_coalesce_hw = lif->rx_coalesce_hw; + set_bit(IONIC_LIF_F_RX_DIM_INTR, lif->state); + set_bit(IONIC_LIF_F_TX_DIM_INTR, lif->state); + + snprintf(lif->name, sizeof(lif->name), "lif%u", lif->index); + + mutex_init(&lif->queue_lock); + mutex_init(&lif->config_lock); + + spin_lock_init(&lif->adminq_lock); + + spin_lock_init(&lif->deferred.lock); + INIT_LIST_HEAD(&lif->deferred.list); + INIT_WORK(&lif->deferred.work, ionic_lif_deferred_work); + + /* allocate lif info */ + lif->info_sz = ALIGN(sizeof(*lif->info), PAGE_SIZE); + lif->info = dma_alloc_coherent(dev, lif->info_sz, + &lif->info_pa, GFP_KERNEL); + if (!lif->info) { + dev_err(dev, "Failed to allocate lif info, aborting\n"); + err = -ENOMEM; + goto err_out_free_mutex; + } + + ionic_debugfs_add_lif(lif); + + /* allocate control queues and txrx queue arrays */ + ionic_lif_queue_identify(lif); + err = ionic_qcqs_alloc(lif); + if (err) + goto err_out_free_lif_info; + + /* allocate rss indirection table */ + tbl_sz = le16_to_cpu(lif->ionic->ident.lif.eth.rss_ind_tbl_sz); + lif->rss_ind_tbl_sz = sizeof(*lif->rss_ind_tbl) * tbl_sz; + lif->rss_ind_tbl = dma_alloc_coherent(dev, lif->rss_ind_tbl_sz, + &lif->rss_ind_tbl_pa, + GFP_KERNEL); + + if (!lif->rss_ind_tbl) { + err = -ENOMEM; + dev_err(dev, "Failed to allocate rss indirection table, aborting\n"); + goto err_out_free_qcqs; + } + netdev_rss_key_fill(lif->rss_hash_key, IONIC_RSS_HASH_KEY_SIZE); + + ionic_lif_alloc_phc(lif); + + return 0; + +err_out_free_qcqs: + ionic_qcqs_free(lif); +err_out_free_lif_info: + dma_free_coherent(dev, lif->info_sz, lif->info, lif->info_pa); + lif->info = NULL; + lif->info_pa = 0; +err_out_free_mutex: + mutex_destroy(&lif->config_lock); + mutex_destroy(&lif->queue_lock); +err_out_free_netdev: + free_netdev(lif->netdev); + lif = NULL; +err_out_free_lid: + kfree(lid); + + return err; +} + +static void ionic_lif_reset(struct ionic_lif *lif) +{ + struct ionic_dev *idev = &lif->ionic->idev; + + mutex_lock(&lif->ionic->dev_cmd_lock); + ionic_dev_cmd_lif_reset(idev, lif->index); + ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT); + mutex_unlock(&lif->ionic->dev_cmd_lock); +} + +static void ionic_lif_handle_fw_down(struct ionic_lif *lif) +{ + struct ionic *ionic = lif->ionic; + + if (test_and_set_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return; + + dev_info(ionic->dev, "FW Down: Stopping LIFs\n"); + + netif_device_detach(lif->netdev); + + mutex_lock(&lif->queue_lock); + if (test_bit(IONIC_LIF_F_UP, lif->state)) { + dev_info(ionic->dev, "Surprise FW stop, stopping queues\n"); + ionic_stop_queues(lif); + } + + if (netif_running(lif->netdev)) { + ionic_txrx_deinit(lif); + ionic_txrx_free(lif); + } + ionic_lif_deinit(lif); + ionic_reset(ionic); + ionic_qcqs_free(lif); + + mutex_unlock(&lif->queue_lock); + + clear_bit(IONIC_LIF_F_FW_STOPPING, lif->state); + dev_info(ionic->dev, "FW Down: LIFs stopped\n"); +} + +static void ionic_lif_handle_fw_up(struct ionic_lif *lif) +{ + struct ionic *ionic = lif->ionic; + int err; + + if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + return; + + dev_info(ionic->dev, "FW Up: restarting LIFs\n"); + + ionic_init_devinfo(ionic); + err = ionic_identify(ionic); + if (err) + goto err_out; + err = ionic_port_identify(ionic); + if (err) + goto err_out; + err = ionic_port_init(ionic); + if (err) + goto err_out; + + mutex_lock(&lif->queue_lock); + + if (test_and_clear_bit(IONIC_LIF_F_BROKEN, lif->state)) + dev_info(ionic->dev, "FW Up: clearing broken state\n"); + + err = ionic_qcqs_alloc(lif); + if (err) + goto err_unlock; + + err = ionic_lif_init(lif); + if (err) + goto err_qcqs_free; + + if (lif->registered) + ionic_lif_set_netdev_info(lif); + + ionic_rx_filter_replay(lif); + + if (netif_running(lif->netdev)) { + err = ionic_txrx_alloc(lif); + if (err) + goto err_lifs_deinit; + + err = ionic_txrx_init(lif); + if (err) + goto err_txrx_free; + } + + mutex_unlock(&lif->queue_lock); + + clear_bit(IONIC_LIF_F_FW_RESET, lif->state); + ionic_link_status_check_request(lif, CAN_SLEEP); + netif_device_attach(lif->netdev); + dev_info(ionic->dev, "FW Up: LIFs restarted\n"); + + /* restore the hardware timestamping queues */ + ionic_lif_hwstamp_replay(lif); + + return; + +err_txrx_free: + ionic_txrx_free(lif); +err_lifs_deinit: + ionic_lif_deinit(lif); +err_qcqs_free: + ionic_qcqs_free(lif); +err_unlock: + mutex_unlock(&lif->queue_lock); +err_out: + dev_err(ionic->dev, "FW Up: LIFs restart failed - err %d\n", err); +} + +void ionic_lif_free(struct ionic_lif *lif) +{ + struct device *dev = lif->ionic->dev; + + ionic_lif_free_phc(lif); + + /* free rss indirection table */ + dma_free_coherent(dev, lif->rss_ind_tbl_sz, lif->rss_ind_tbl, + lif->rss_ind_tbl_pa); + lif->rss_ind_tbl = NULL; + lif->rss_ind_tbl_pa = 0; + + /* free queues */ + ionic_qcqs_free(lif); + if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + ionic_lif_reset(lif); + + /* free lif info */ + kfree(lif->identity); + dma_free_coherent(dev, lif->info_sz, lif->info, lif->info_pa); + lif->info = NULL; + lif->info_pa = 0; + + /* unmap doorbell page */ + ionic_bus_unmap_dbpage(lif->ionic, lif->kern_dbpage); + lif->kern_dbpage = NULL; + + mutex_destroy(&lif->config_lock); + mutex_destroy(&lif->queue_lock); + + /* free netdev & lif */ + ionic_debugfs_del_lif(lif); + free_netdev(lif->netdev); +} + +void ionic_lif_deinit(struct ionic_lif *lif) +{ + if (!test_and_clear_bit(IONIC_LIF_F_INITED, lif->state)) + return; + + if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) { + cancel_work_sync(&lif->deferred.work); + cancel_work_sync(&lif->tx_timeout_work); + ionic_rx_filters_deinit(lif); + if (lif->netdev->features & NETIF_F_RXHASH) + ionic_lif_rss_deinit(lif); + } + + napi_disable(&lif->adminqcq->napi); + ionic_lif_qcq_deinit(lif, lif->notifyqcq); + ionic_lif_qcq_deinit(lif, lif->adminqcq); + + ionic_lif_reset(lif); +} + +static int ionic_lif_adminq_init(struct ionic_lif *lif) +{ + struct device *dev = lif->ionic->dev; + struct ionic_q_init_comp comp; + struct ionic_dev *idev; + struct ionic_qcq *qcq; + struct ionic_queue *q; + int err; + + idev = &lif->ionic->idev; + qcq = lif->adminqcq; + q = &qcq->q; + + mutex_lock(&lif->ionic->dev_cmd_lock); + ionic_dev_cmd_adminq_init(idev, qcq, lif->index, qcq->intr.index); + err = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT); + ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp); + mutex_unlock(&lif->ionic->dev_cmd_lock); + if (err) { + netdev_err(lif->netdev, "adminq init failed %d\n", err); + return err; + } + + q->hw_type = comp.hw_type; + q->hw_index = le32_to_cpu(comp.hw_index); + q->dbval = IONIC_DBELL_QID(q->hw_index); + + dev_dbg(dev, "adminq->hw_type %d\n", q->hw_type); + dev_dbg(dev, "adminq->hw_index %d\n", q->hw_index); + + q->dbell_deadline = IONIC_ADMIN_DOORBELL_DEADLINE; + q->dbell_jiffies = jiffies; + + netif_napi_add(lif->netdev, &qcq->napi, ionic_adminq_napi); + + qcq->napi_qcq = qcq; + timer_setup(&qcq->napi_deadline, ionic_napi_deadline, 0); + + napi_enable(&qcq->napi); + + if (qcq->flags & IONIC_QCQ_F_INTR) + ionic_intr_mask(idev->intr_ctrl, qcq->intr.index, + IONIC_INTR_MASK_CLEAR); + + qcq->flags |= IONIC_QCQ_F_INITED; + + return 0; +} + +static int ionic_lif_notifyq_init(struct ionic_lif *lif) +{ + struct ionic_qcq *qcq = lif->notifyqcq; + struct device *dev = lif->ionic->dev; + struct ionic_queue *q = &qcq->q; + int err; + + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.q_init = { + .opcode = IONIC_CMD_Q_INIT, + .lif_index = cpu_to_le16(lif->index), + .type = q->type, + .ver = lif->qtype_info[q->type].version, + .index = cpu_to_le32(q->index), + .flags = cpu_to_le16(IONIC_QINIT_F_IRQ | + IONIC_QINIT_F_ENA), + .intr_index = cpu_to_le16(lif->adminqcq->intr.index), + .pid = cpu_to_le16(q->pid), + .ring_size = ilog2(q->num_descs), + .ring_base = cpu_to_le64(q->base_pa), + } + }; + + dev_dbg(dev, "notifyq_init.pid %d\n", ctx.cmd.q_init.pid); + dev_dbg(dev, "notifyq_init.index %d\n", ctx.cmd.q_init.index); + dev_dbg(dev, "notifyq_init.ring_base 0x%llx\n", ctx.cmd.q_init.ring_base); + dev_dbg(dev, "notifyq_init.ring_size %d\n", ctx.cmd.q_init.ring_size); + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + return err; + + lif->last_eid = 0; + q->hw_type = ctx.comp.q_init.hw_type; + q->hw_index = le32_to_cpu(ctx.comp.q_init.hw_index); + q->dbval = IONIC_DBELL_QID(q->hw_index); + + dev_dbg(dev, "notifyq->hw_type %d\n", q->hw_type); + dev_dbg(dev, "notifyq->hw_index %d\n", q->hw_index); + + /* preset the callback info */ + q->info[0].cb_arg = lif; + + qcq->flags |= IONIC_QCQ_F_INITED; + + return 0; +} + +static int ionic_station_set(struct ionic_lif *lif) +{ + struct net_device *netdev = lif->netdev; + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_getattr = { + .opcode = IONIC_CMD_LIF_GETATTR, + .index = cpu_to_le16(lif->index), + .attr = IONIC_LIF_ATTR_MAC, + }, + }; + u8 mac_address[ETH_ALEN]; + struct sockaddr addr; + int err; + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) + return err; + netdev_dbg(lif->netdev, "found initial MAC addr %pM\n", + ctx.comp.lif_getattr.mac); + ether_addr_copy(mac_address, ctx.comp.lif_getattr.mac); + + if (is_zero_ether_addr(mac_address)) { + eth_hw_addr_random(netdev); + netdev_dbg(netdev, "Random Mac generated: %pM\n", netdev->dev_addr); + ether_addr_copy(mac_address, netdev->dev_addr); + + err = ionic_program_mac(lif, mac_address); + if (err < 0) + return err; + + if (err > 0) { + netdev_dbg(netdev, "%s:SET/GET ATTR Mac are not same-due to old FW running\n", + __func__); + return 0; + } + } + + if (!is_zero_ether_addr(netdev->dev_addr)) { + /* If the netdev mac is non-zero and doesn't match the default + * device address, it was set by something earlier and we're + * likely here again after a fw-upgrade reset. We need to be + * sure the netdev mac is in our filter list. + */ + if (!ether_addr_equal(mac_address, netdev->dev_addr)) + ionic_lif_addr_add(lif, netdev->dev_addr); + } else { + /* Update the netdev mac with the device's mac */ + ether_addr_copy(addr.sa_data, mac_address); + addr.sa_family = AF_INET; + err = eth_prepare_mac_addr_change(netdev, &addr); + if (err) { + netdev_warn(lif->netdev, "ignoring bad MAC addr from NIC %pM - err %d\n", + addr.sa_data, err); + return 0; + } + + eth_commit_mac_addr_change(netdev, &addr); + } + + netdev_dbg(lif->netdev, "adding station MAC addr %pM\n", + netdev->dev_addr); + ionic_lif_addr_add(lif, netdev->dev_addr); + + return 0; +} + +int ionic_lif_init(struct ionic_lif *lif) +{ + struct ionic_dev *idev = &lif->ionic->idev; + struct device *dev = lif->ionic->dev; + struct ionic_lif_init_comp comp; + int dbpage_num; + int err; + + mutex_lock(&lif->ionic->dev_cmd_lock); + ionic_dev_cmd_lif_init(idev, lif->index, lif->info_pa); + err = ionic_dev_cmd_wait(lif->ionic, DEVCMD_TIMEOUT); + ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp); + mutex_unlock(&lif->ionic->dev_cmd_lock); + if (err) + return err; + + lif->hw_index = le16_to_cpu(comp.hw_index); + + /* now that we have the hw_index we can figure out our doorbell page */ + lif->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif); + if (!lif->dbid_count) { + dev_err(dev, "No doorbell pages, aborting\n"); + return -EINVAL; + } + + lif->kern_pid = 0; + dbpage_num = ionic_db_page_num(lif, lif->kern_pid); + lif->kern_dbpage = ionic_bus_map_dbpage(lif->ionic, dbpage_num); + if (!lif->kern_dbpage) { + dev_err(dev, "Cannot map dbpage, aborting\n"); + return -ENOMEM; + } + + err = ionic_lif_adminq_init(lif); + if (err) + goto err_out_adminq_deinit; + + if (lif->ionic->nnqs_per_lif) { + err = ionic_lif_notifyq_init(lif); + if (err) + goto err_out_notifyq_deinit; + } + + err = ionic_init_nic_features(lif); + if (err) + goto err_out_notifyq_deinit; + + if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) { + err = ionic_rx_filters_init(lif); + if (err) + goto err_out_notifyq_deinit; + } + + err = ionic_station_set(lif); + if (err) + goto err_out_notifyq_deinit; + + lif->rx_copybreak = IONIC_RX_COPYBREAK_DEFAULT; + + set_bit(IONIC_LIF_F_INITED, lif->state); + + INIT_WORK(&lif->tx_timeout_work, ionic_tx_timeout_work); + + return 0; + +err_out_notifyq_deinit: + napi_disable(&lif->adminqcq->napi); + ionic_lif_qcq_deinit(lif, lif->notifyqcq); +err_out_adminq_deinit: + ionic_lif_qcq_deinit(lif, lif->adminqcq); + ionic_lif_reset(lif); + ionic_bus_unmap_dbpage(lif->ionic, lif->kern_dbpage); + lif->kern_dbpage = NULL; + + return err; +} + +static void ionic_lif_notify_work(struct work_struct *ws) +{ +} + +static void ionic_lif_set_netdev_info(struct ionic_lif *lif) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.lif_setattr = { + .opcode = IONIC_CMD_LIF_SETATTR, + .index = cpu_to_le16(lif->index), + .attr = IONIC_LIF_ATTR_NAME, + }, + }; + + strscpy(ctx.cmd.lif_setattr.name, lif->netdev->name, + sizeof(ctx.cmd.lif_setattr.name)); + + ionic_adminq_post_wait(lif, &ctx); +} + +static struct ionic_lif *ionic_netdev_lif(struct net_device *netdev) +{ + if (!netdev || netdev->netdev_ops->ndo_start_xmit != ionic_start_xmit) + return NULL; + + return netdev_priv(netdev); +} + +static int ionic_lif_notify(struct notifier_block *nb, + unsigned long event, void *info) +{ + struct net_device *ndev = netdev_notifier_info_to_dev(info); + struct ionic *ionic = container_of(nb, struct ionic, nb); + struct ionic_lif *lif = ionic_netdev_lif(ndev); + + if (!lif || lif->ionic != ionic) + return NOTIFY_DONE; + + switch (event) { + case NETDEV_CHANGENAME: + ionic_lif_set_netdev_info(lif); + break; + } + + return NOTIFY_DONE; +} + +int ionic_lif_register(struct ionic_lif *lif) +{ + int err; + + ionic_lif_register_phc(lif); + + INIT_WORK(&lif->ionic->nb_work, ionic_lif_notify_work); + + lif->ionic->nb.notifier_call = ionic_lif_notify; + + err = register_netdevice_notifier(&lif->ionic->nb); + if (err) + lif->ionic->nb.notifier_call = NULL; + + /* only register LIF0 for now */ + err = register_netdev(lif->netdev); + if (err) { + dev_err(lif->ionic->dev, "Cannot register net device, aborting\n"); + ionic_lif_unregister_phc(lif); + return err; + } + + ionic_link_status_check_request(lif, CAN_SLEEP); + lif->registered = true; + ionic_lif_set_netdev_info(lif); + + return 0; +} + +void ionic_lif_unregister(struct ionic_lif *lif) +{ + if (lif->ionic->nb.notifier_call) { + unregister_netdevice_notifier(&lif->ionic->nb); + cancel_work_sync(&lif->ionic->nb_work); + lif->ionic->nb.notifier_call = NULL; + } + + if (lif->netdev->reg_state == NETREG_REGISTERED) + unregister_netdev(lif->netdev); + + ionic_lif_unregister_phc(lif); + + lif->registered = false; +} + +static void ionic_lif_queue_identify(struct ionic_lif *lif) +{ + union ionic_q_identity __iomem *q_ident; + struct ionic *ionic = lif->ionic; + struct ionic_dev *idev; + int qtype; + int err; + + idev = &lif->ionic->idev; + q_ident = (union ionic_q_identity __iomem *)&idev->dev_cmd_regs->data; + + for (qtype = 0; qtype < ARRAY_SIZE(ionic_qtype_versions); qtype++) { + struct ionic_qtype_info *qti = &lif->qtype_info[qtype]; + + /* filter out the ones we know about */ + switch (qtype) { + case IONIC_QTYPE_ADMINQ: + case IONIC_QTYPE_NOTIFYQ: + case IONIC_QTYPE_RXQ: + case IONIC_QTYPE_TXQ: + break; + default: + continue; + } + + memset(qti, 0, sizeof(*qti)); + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_queue_identify(idev, lif->lif_type, qtype, + ionic_qtype_versions[qtype]); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + if (!err) { + qti->version = readb(&q_ident->version); + qti->supported = readb(&q_ident->supported); + qti->features = readq(&q_ident->features); + qti->desc_sz = readw(&q_ident->desc_sz); + qti->comp_sz = readw(&q_ident->comp_sz); + qti->sg_desc_sz = readw(&q_ident->sg_desc_sz); + qti->max_sg_elems = readw(&q_ident->max_sg_elems); + qti->sg_desc_stride = readw(&q_ident->sg_desc_stride); + } + mutex_unlock(&ionic->dev_cmd_lock); + + if (err == -EINVAL) { + dev_err(ionic->dev, "qtype %d not supported\n", qtype); + continue; + } else if (err == -EIO) { + dev_err(ionic->dev, "q_ident failed, not supported on older FW\n"); + return; + } else if (err) { + dev_err(ionic->dev, "q_ident failed, qtype %d: %d\n", + qtype, err); + return; + } + + dev_dbg(ionic->dev, " qtype[%d].version = %d\n", + qtype, qti->version); + dev_dbg(ionic->dev, " qtype[%d].supported = 0x%02x\n", + qtype, qti->supported); + dev_dbg(ionic->dev, " qtype[%d].features = 0x%04llx\n", + qtype, qti->features); + dev_dbg(ionic->dev, " qtype[%d].desc_sz = %d\n", + qtype, qti->desc_sz); + dev_dbg(ionic->dev, " qtype[%d].comp_sz = %d\n", + qtype, qti->comp_sz); + dev_dbg(ionic->dev, " qtype[%d].sg_desc_sz = %d\n", + qtype, qti->sg_desc_sz); + dev_dbg(ionic->dev, " qtype[%d].max_sg_elems = %d\n", + qtype, qti->max_sg_elems); + dev_dbg(ionic->dev, " qtype[%d].sg_desc_stride = %d\n", + qtype, qti->sg_desc_stride); + } +} + +int ionic_lif_identify(struct ionic *ionic, u8 lif_type, + union ionic_lif_identity *lid) +{ + struct ionic_dev *idev = &ionic->idev; + size_t sz; + int err; + + sz = min(sizeof(*lid), sizeof(idev->dev_cmd_regs->data)); + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_lif_identify(idev, lif_type, IONIC_IDENTITY_VERSION_1); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + memcpy_fromio(lid, &idev->dev_cmd_regs->data, sz); + mutex_unlock(&ionic->dev_cmd_lock); + if (err) + return (err); + + dev_dbg(ionic->dev, "capabilities 0x%llx\n", + le64_to_cpu(lid->capabilities)); + + dev_dbg(ionic->dev, "eth.max_ucast_filters %d\n", + le32_to_cpu(lid->eth.max_ucast_filters)); + dev_dbg(ionic->dev, "eth.max_mcast_filters %d\n", + le32_to_cpu(lid->eth.max_mcast_filters)); + dev_dbg(ionic->dev, "eth.features 0x%llx\n", + le64_to_cpu(lid->eth.config.features)); + dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_ADMINQ] %d\n", + le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_ADMINQ])); + dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_NOTIFYQ] %d\n", + le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_NOTIFYQ])); + dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_RXQ] %d\n", + le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_RXQ])); + dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_TXQ] %d\n", + le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_TXQ])); + dev_dbg(ionic->dev, "eth.config.name %s\n", lid->eth.config.name); + dev_dbg(ionic->dev, "eth.config.mac %pM\n", lid->eth.config.mac); + dev_dbg(ionic->dev, "eth.config.mtu %d\n", + le32_to_cpu(lid->eth.config.mtu)); + + return 0; +} + +int ionic_lif_size(struct ionic *ionic) +{ + struct ionic_identity *ident = &ionic->ident; + unsigned int nintrs, dev_nintrs; + union ionic_lif_config *lc; + unsigned int ntxqs_per_lif; + unsigned int nrxqs_per_lif; + unsigned int neqs_per_lif; + unsigned int nnqs_per_lif; + unsigned int nxqs, neqs; + unsigned int min_intrs; + int err; + + /* retrieve basic values from FW */ + lc = &ident->lif.eth.config; + dev_nintrs = le32_to_cpu(ident->dev.nintrs); + neqs_per_lif = le32_to_cpu(ident->lif.rdma.eq_qtype.qid_count); + nnqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_NOTIFYQ]); + ntxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_TXQ]); + nrxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_RXQ]); + + /* limit values to play nice with kdump */ + if (is_kdump_kernel()) { + dev_nintrs = 2; + neqs_per_lif = 0; + nnqs_per_lif = 0; + ntxqs_per_lif = 1; + nrxqs_per_lif = 1; + } + + /* reserve last queue id for hardware timestamping */ + if (lc->features & cpu_to_le64(IONIC_ETH_HW_TIMESTAMP)) { + if (ntxqs_per_lif <= 1 || nrxqs_per_lif <= 1) { + lc->features &= cpu_to_le64(~IONIC_ETH_HW_TIMESTAMP); + } else { + ntxqs_per_lif -= 1; + nrxqs_per_lif -= 1; + } + } + + nxqs = min(ntxqs_per_lif, nrxqs_per_lif); + nxqs = min(nxqs, num_online_cpus()); + neqs = min(neqs_per_lif, num_online_cpus()); + +try_again: + /* interrupt usage: + * 1 for master lif adminq/notifyq + * 1 for each CPU for master lif TxRx queue pairs + * whatever's left is for RDMA queues + */ + nintrs = 1 + nxqs + neqs; + min_intrs = 2; /* adminq + 1 TxRx queue pair */ + + if (nintrs > dev_nintrs) + goto try_fewer; + + err = ionic_bus_alloc_irq_vectors(ionic, nintrs); + if (err < 0 && err != -ENOSPC) { + dev_err(ionic->dev, "Can't get intrs from OS: %d\n", err); + return err; + } + if (err == -ENOSPC) + goto try_fewer; + + if (err != nintrs) { + ionic_bus_free_irq_vectors(ionic); + goto try_fewer; + } + + ionic->nnqs_per_lif = nnqs_per_lif; + ionic->neqs_per_lif = neqs; + ionic->ntxqs_per_lif = nxqs; + ionic->nrxqs_per_lif = nxqs; + ionic->nintrs = nintrs; + + ionic_debugfs_add_sizes(ionic); + + return 0; + +try_fewer: + if (nnqs_per_lif > 1) { + nnqs_per_lif >>= 1; + goto try_again; + } + if (neqs > 1) { + neqs >>= 1; + goto try_again; + } + if (nxqs > 1) { + nxqs >>= 1; + goto try_again; + } + dev_err(ionic->dev, "Can't get minimum %d intrs from OS\n", min_intrs); + return -ENOSPC; +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h new file mode 100644 index 000000000..734519895 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h @@ -0,0 +1,343 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_LIF_H_ +#define _IONIC_LIF_H_ + +#include <linux/ptp_clock_kernel.h> +#include <linux/timecounter.h> +#include <uapi/linux/net_tstamp.h> +#include <linux/dim.h> +#include <linux/pci.h> +#include "ionic_rx_filter.h" + +#define IONIC_ADMINQ_LENGTH 16 /* must be a power of two */ +#define IONIC_NOTIFYQ_LENGTH 64 /* must be a power of two */ + +#define ADD_ADDR true +#define DEL_ADDR false +#define CAN_SLEEP true +#define CAN_NOT_SLEEP false + +#define IONIC_RX_COPYBREAK_DEFAULT 256 +#define IONIC_TX_BUDGET_DEFAULT 256 + +struct ionic_tx_stats { + u64 pkts; + u64 bytes; + u64 csum_none; + u64 csum; + u64 tso; + u64 tso_bytes; + u64 frags; + u64 vlan_inserted; + u64 clean; + u64 linearize; + u64 crc32_csum; + u64 dma_map_err; + u64 hwstamp_valid; + u64 hwstamp_invalid; +}; + +struct ionic_rx_stats { + u64 pkts; + u64 bytes; + u64 csum_none; + u64 csum_complete; + u64 dropped; + u64 vlan_stripped; + u64 csum_error; + u64 dma_map_err; + u64 alloc_err; + u64 hwstamp_valid; + u64 hwstamp_invalid; +}; + +#define IONIC_QCQ_F_INITED BIT(0) +#define IONIC_QCQ_F_SG BIT(1) +#define IONIC_QCQ_F_INTR BIT(2) +#define IONIC_QCQ_F_TX_STATS BIT(3) +#define IONIC_QCQ_F_RX_STATS BIT(4) +#define IONIC_QCQ_F_NOTIFYQ BIT(5) + +struct ionic_qcq { + void *q_base; + dma_addr_t q_base_pa; + u32 q_size; + void *cq_base; + dma_addr_t cq_base_pa; + u32 cq_size; + void *sg_base; + dma_addr_t sg_base_pa; + u32 sg_size; + struct dim dim; + struct ionic_queue q; + struct ionic_cq cq; + struct ionic_intr_info intr; + struct timer_list napi_deadline; + struct napi_struct napi; + unsigned int flags; + struct ionic_qcq *napi_qcq; + struct dentry *dentry; +}; + +#define q_to_qcq(q) container_of(q, struct ionic_qcq, q) +#define q_to_tx_stats(q) (&(q)->lif->txqstats[(q)->index]) +#define q_to_rx_stats(q) (&(q)->lif->rxqstats[(q)->index]) +#define napi_to_qcq(napi) container_of(napi, struct ionic_qcq, napi) +#define napi_to_cq(napi) (&napi_to_qcq(napi)->cq) + +enum ionic_deferred_work_type { + IONIC_DW_TYPE_RX_MODE, + IONIC_DW_TYPE_LINK_STATUS, + IONIC_DW_TYPE_LIF_RESET, +}; + +struct ionic_deferred_work { + struct list_head list; + enum ionic_deferred_work_type type; + union { + u8 addr[ETH_ALEN]; + u8 fw_status; + }; +}; + +struct ionic_deferred { + spinlock_t lock; /* lock for deferred work list */ + struct list_head list; + struct work_struct work; +}; + +struct ionic_lif_sw_stats { + u64 tx_packets; + u64 tx_bytes; + u64 rx_packets; + u64 rx_bytes; + u64 tx_tso; + u64 tx_tso_bytes; + u64 tx_csum_none; + u64 tx_csum; + u64 rx_csum_none; + u64 rx_csum_complete; + u64 rx_csum_error; + u64 tx_hwstamp_valid; + u64 tx_hwstamp_invalid; + u64 rx_hwstamp_valid; + u64 rx_hwstamp_invalid; + u64 hw_tx_dropped; + u64 hw_rx_dropped; + u64 hw_rx_over_errors; + u64 hw_rx_missed_errors; + u64 hw_tx_aborted_errors; +}; + +enum ionic_lif_state_flags { + IONIC_LIF_F_INITED, + IONIC_LIF_F_UP, + IONIC_LIF_F_LINK_CHECK_REQUESTED, + IONIC_LIF_F_FILTER_SYNC_NEEDED, + IONIC_LIF_F_FW_RESET, + IONIC_LIF_F_FW_STOPPING, + IONIC_LIF_F_SPLIT_INTR, + IONIC_LIF_F_BROKEN, + IONIC_LIF_F_TX_DIM_INTR, + IONIC_LIF_F_RX_DIM_INTR, + + /* leave this as last */ + IONIC_LIF_F_STATE_SIZE +}; + +struct ionic_qtype_info { + u8 version; + u8 supported; + u64 features; + u16 desc_sz; + u16 comp_sz; + u16 sg_desc_sz; + u16 max_sg_elems; + u16 sg_desc_stride; +}; + +struct ionic_phc; + +#define IONIC_LIF_NAME_MAX_SZ 32 +struct ionic_lif { + struct net_device *netdev; + DECLARE_BITMAP(state, IONIC_LIF_F_STATE_SIZE); + struct ionic *ionic; + unsigned int index; + unsigned int hw_index; + struct mutex queue_lock; /* lock for queue structures */ + struct mutex config_lock; /* lock for config actions */ + spinlock_t adminq_lock; /* lock for AdminQ operations */ + struct ionic_qcq *adminqcq; + struct ionic_qcq *notifyqcq; + struct ionic_qcq **txqcqs; + struct ionic_qcq *hwstamp_txq; + struct ionic_tx_stats *txqstats; + struct ionic_qcq **rxqcqs; + struct ionic_qcq *hwstamp_rxq; + struct ionic_rx_stats *rxqstats; + struct ionic_deferred deferred; + struct work_struct tx_timeout_work; + u64 last_eid; + unsigned int kern_pid; + u64 __iomem *kern_dbpage; + unsigned int neqs; + unsigned int nxqs; + unsigned int ntxq_descs; + unsigned int nrxq_descs; + u32 rx_copybreak; + u64 rxq_features; + u16 rx_mode; + u64 hw_features; + bool registered; + u16 lif_type; + unsigned int nmcast; + unsigned int nucast; + unsigned int nvlans; + unsigned int max_vlans; + char name[IONIC_LIF_NAME_MAX_SZ]; + + union ionic_lif_identity *identity; + struct ionic_lif_info *info; + dma_addr_t info_pa; + u32 info_sz; + struct ionic_qtype_info qtype_info[IONIC_QTYPE_MAX]; + + u16 rss_types; + u8 rss_hash_key[IONIC_RSS_HASH_KEY_SIZE]; + u8 *rss_ind_tbl; + dma_addr_t rss_ind_tbl_pa; + u32 rss_ind_tbl_sz; + + struct ionic_rx_filters rx_filters; + u32 rx_coalesce_usecs; /* what the user asked for */ + u32 rx_coalesce_hw; /* what the hw is using */ + u32 tx_coalesce_usecs; /* what the user asked for */ + u32 tx_coalesce_hw; /* what the hw is using */ + unsigned int dbid_count; + + struct ionic_phc *phc; + + struct dentry *dentry; +}; + +struct ionic_phc { + spinlock_t lock; /* lock for cc and tc */ + struct cyclecounter cc; + struct timecounter tc; + + struct mutex config_lock; /* lock for ts_config */ + struct hwtstamp_config ts_config; + u64 ts_config_rx_filt; + u32 ts_config_tx_mode; + + u32 init_cc_mult; + long aux_work_delay; + + struct ptp_clock_info ptp_info; + struct ptp_clock *ptp; + struct ionic_lif *lif; +}; + +struct ionic_queue_params { + unsigned int nxqs; + unsigned int ntxq_descs; + unsigned int nrxq_descs; + unsigned int intr_split; + u64 rxq_features; +}; + +static inline void ionic_init_queue_params(struct ionic_lif *lif, + struct ionic_queue_params *qparam) +{ + qparam->nxqs = lif->nxqs; + qparam->ntxq_descs = lif->ntxq_descs; + qparam->nrxq_descs = lif->nrxq_descs; + qparam->intr_split = test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state); + qparam->rxq_features = lif->rxq_features; +} + +static inline u32 ionic_coal_usec_to_hw(struct ionic *ionic, u32 usecs) +{ + u32 mult = le32_to_cpu(ionic->ident.dev.intr_coal_mult); + u32 div = le32_to_cpu(ionic->ident.dev.intr_coal_div); + + /* Div-by-zero should never be an issue, but check anyway */ + if (!div || !mult) + return 0; + + /* Round up in case usecs is close to the next hw unit */ + usecs += (div / mult) >> 1; + + /* Convert from usecs to device units */ + return (usecs * mult) / div; +} + +void ionic_link_status_check_request(struct ionic_lif *lif, bool can_sleep); +void ionic_get_stats64(struct net_device *netdev, + struct rtnl_link_stats64 *ns); +void ionic_lif_deferred_enqueue(struct ionic_deferred *def, + struct ionic_deferred_work *work); +int ionic_lif_alloc(struct ionic *ionic); +int ionic_lif_init(struct ionic_lif *lif); +void ionic_lif_free(struct ionic_lif *lif); +void ionic_lif_deinit(struct ionic_lif *lif); + +int ionic_lif_addr_add(struct ionic_lif *lif, const u8 *addr); +int ionic_lif_addr_del(struct ionic_lif *lif, const u8 *addr); + +int ionic_lif_register(struct ionic_lif *lif); +void ionic_lif_unregister(struct ionic_lif *lif); +int ionic_lif_identify(struct ionic *ionic, u8 lif_type, + union ionic_lif_identity *lif_ident); +int ionic_lif_size(struct ionic *ionic); + +#if IS_ENABLED(CONFIG_PTP_1588_CLOCK) +void ionic_lif_hwstamp_replay(struct ionic_lif *lif); +void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif); +int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr); +int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr); +ktime_t ionic_lif_phc_ktime(struct ionic_lif *lif, u64 counter); +void ionic_lif_register_phc(struct ionic_lif *lif); +void ionic_lif_unregister_phc(struct ionic_lif *lif); +void ionic_lif_alloc_phc(struct ionic_lif *lif); +void ionic_lif_free_phc(struct ionic_lif *lif); +#else +static inline void ionic_lif_hwstamp_replay(struct ionic_lif *lif) {} +static inline void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif) {} + +static inline int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) +{ + return -EOPNOTSUPP; +} + +static inline int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr) +{ + return -EOPNOTSUPP; +} + +static inline ktime_t ionic_lif_phc_ktime(struct ionic_lif *lif, u64 counter) +{ + return ns_to_ktime(0); +} + +static inline void ionic_lif_register_phc(struct ionic_lif *lif) {} +static inline void ionic_lif_unregister_phc(struct ionic_lif *lif) {} +static inline void ionic_lif_alloc_phc(struct ionic_lif *lif) {} +static inline void ionic_lif_free_phc(struct ionic_lif *lif) {} +#endif + +int ionic_lif_create_hwstamp_txq(struct ionic_lif *lif); +int ionic_lif_create_hwstamp_rxq(struct ionic_lif *lif); +int ionic_lif_config_hwstamp_rxq_all(struct ionic_lif *lif, bool rx_all); +int ionic_lif_set_hwstamp_txmode(struct ionic_lif *lif, u16 txstamp_mode); +int ionic_lif_set_hwstamp_rxfilt(struct ionic_lif *lif, u64 pkt_class); + +int ionic_lif_rss_config(struct ionic_lif *lif, u16 types, + const u8 *key, const u32 *indir); +void ionic_lif_rx_mode(struct ionic_lif *lif); +int ionic_reconfigure_queues(struct ionic_lif *lif, + struct ionic_queue_params *qparam); +#endif /* _IONIC_LIF_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c new file mode 100644 index 000000000..79272f5f3 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c @@ -0,0 +1,738 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/printk.h> +#include <linux/dynamic_debug.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/utsname.h> +#include <generated/utsrelease.h> +#include <linux/ctype.h> + +#include "ionic.h" +#include "ionic_bus.h" +#include "ionic_lif.h" +#include "ionic_debugfs.h" + +MODULE_DESCRIPTION(IONIC_DRV_DESCRIPTION); +MODULE_AUTHOR("Pensando Systems, Inc"); +MODULE_LICENSE("GPL"); + +static const char *ionic_error_to_str(enum ionic_status_code code) +{ + switch (code) { + case IONIC_RC_SUCCESS: + return "IONIC_RC_SUCCESS"; + case IONIC_RC_EVERSION: + return "IONIC_RC_EVERSION"; + case IONIC_RC_EOPCODE: + return "IONIC_RC_EOPCODE"; + case IONIC_RC_EIO: + return "IONIC_RC_EIO"; + case IONIC_RC_EPERM: + return "IONIC_RC_EPERM"; + case IONIC_RC_EQID: + return "IONIC_RC_EQID"; + case IONIC_RC_EQTYPE: + return "IONIC_RC_EQTYPE"; + case IONIC_RC_ENOENT: + return "IONIC_RC_ENOENT"; + case IONIC_RC_EINTR: + return "IONIC_RC_EINTR"; + case IONIC_RC_EAGAIN: + return "IONIC_RC_EAGAIN"; + case IONIC_RC_ENOMEM: + return "IONIC_RC_ENOMEM"; + case IONIC_RC_EFAULT: + return "IONIC_RC_EFAULT"; + case IONIC_RC_EBUSY: + return "IONIC_RC_EBUSY"; + case IONIC_RC_EEXIST: + return "IONIC_RC_EEXIST"; + case IONIC_RC_EINVAL: + return "IONIC_RC_EINVAL"; + case IONIC_RC_ENOSPC: + return "IONIC_RC_ENOSPC"; + case IONIC_RC_ERANGE: + return "IONIC_RC_ERANGE"; + case IONIC_RC_BAD_ADDR: + return "IONIC_RC_BAD_ADDR"; + case IONIC_RC_DEV_CMD: + return "IONIC_RC_DEV_CMD"; + case IONIC_RC_ENOSUPP: + return "IONIC_RC_ENOSUPP"; + case IONIC_RC_ERROR: + return "IONIC_RC_ERROR"; + case IONIC_RC_ERDMA: + return "IONIC_RC_ERDMA"; + case IONIC_RC_EBAD_FW: + return "IONIC_RC_EBAD_FW"; + default: + return "IONIC_RC_UNKNOWN"; + } +} + +static int ionic_error_to_errno(enum ionic_status_code code) +{ + switch (code) { + case IONIC_RC_SUCCESS: + return 0; + case IONIC_RC_EVERSION: + case IONIC_RC_EQTYPE: + case IONIC_RC_EQID: + case IONIC_RC_EINVAL: + case IONIC_RC_ENOSUPP: + return -EINVAL; + case IONIC_RC_EPERM: + return -EPERM; + case IONIC_RC_ENOENT: + return -ENOENT; + case IONIC_RC_EAGAIN: + return -EAGAIN; + case IONIC_RC_ENOMEM: + return -ENOMEM; + case IONIC_RC_EFAULT: + return -EFAULT; + case IONIC_RC_EBUSY: + return -EBUSY; + case IONIC_RC_EEXIST: + return -EEXIST; + case IONIC_RC_ENOSPC: + return -ENOSPC; + case IONIC_RC_ERANGE: + return -ERANGE; + case IONIC_RC_BAD_ADDR: + return -EFAULT; + case IONIC_RC_EOPCODE: + case IONIC_RC_EINTR: + case IONIC_RC_DEV_CMD: + case IONIC_RC_ERROR: + case IONIC_RC_ERDMA: + case IONIC_RC_EIO: + default: + return -EIO; + } +} + +static const char *ionic_opcode_to_str(enum ionic_cmd_opcode opcode) +{ + switch (opcode) { + case IONIC_CMD_NOP: + return "IONIC_CMD_NOP"; + case IONIC_CMD_INIT: + return "IONIC_CMD_INIT"; + case IONIC_CMD_RESET: + return "IONIC_CMD_RESET"; + case IONIC_CMD_IDENTIFY: + return "IONIC_CMD_IDENTIFY"; + case IONIC_CMD_GETATTR: + return "IONIC_CMD_GETATTR"; + case IONIC_CMD_SETATTR: + return "IONIC_CMD_SETATTR"; + case IONIC_CMD_PORT_IDENTIFY: + return "IONIC_CMD_PORT_IDENTIFY"; + case IONIC_CMD_PORT_INIT: + return "IONIC_CMD_PORT_INIT"; + case IONIC_CMD_PORT_RESET: + return "IONIC_CMD_PORT_RESET"; + case IONIC_CMD_PORT_GETATTR: + return "IONIC_CMD_PORT_GETATTR"; + case IONIC_CMD_PORT_SETATTR: + return "IONIC_CMD_PORT_SETATTR"; + case IONIC_CMD_LIF_INIT: + return "IONIC_CMD_LIF_INIT"; + case IONIC_CMD_LIF_RESET: + return "IONIC_CMD_LIF_RESET"; + case IONIC_CMD_LIF_IDENTIFY: + return "IONIC_CMD_LIF_IDENTIFY"; + case IONIC_CMD_LIF_SETATTR: + return "IONIC_CMD_LIF_SETATTR"; + case IONIC_CMD_LIF_GETATTR: + return "IONIC_CMD_LIF_GETATTR"; + case IONIC_CMD_LIF_SETPHC: + return "IONIC_CMD_LIF_SETPHC"; + case IONIC_CMD_RX_MODE_SET: + return "IONIC_CMD_RX_MODE_SET"; + case IONIC_CMD_RX_FILTER_ADD: + return "IONIC_CMD_RX_FILTER_ADD"; + case IONIC_CMD_RX_FILTER_DEL: + return "IONIC_CMD_RX_FILTER_DEL"; + case IONIC_CMD_Q_IDENTIFY: + return "IONIC_CMD_Q_IDENTIFY"; + case IONIC_CMD_Q_INIT: + return "IONIC_CMD_Q_INIT"; + case IONIC_CMD_Q_CONTROL: + return "IONIC_CMD_Q_CONTROL"; + case IONIC_CMD_RDMA_RESET_LIF: + return "IONIC_CMD_RDMA_RESET_LIF"; + case IONIC_CMD_RDMA_CREATE_EQ: + return "IONIC_CMD_RDMA_CREATE_EQ"; + case IONIC_CMD_RDMA_CREATE_CQ: + return "IONIC_CMD_RDMA_CREATE_CQ"; + case IONIC_CMD_RDMA_CREATE_ADMINQ: + return "IONIC_CMD_RDMA_CREATE_ADMINQ"; + case IONIC_CMD_FW_DOWNLOAD: + return "IONIC_CMD_FW_DOWNLOAD"; + case IONIC_CMD_FW_CONTROL: + return "IONIC_CMD_FW_CONTROL"; + case IONIC_CMD_FW_DOWNLOAD_V1: + return "IONIC_CMD_FW_DOWNLOAD_V1"; + case IONIC_CMD_FW_CONTROL_V1: + return "IONIC_CMD_FW_CONTROL_V1"; + case IONIC_CMD_VF_GETATTR: + return "IONIC_CMD_VF_GETATTR"; + case IONIC_CMD_VF_SETATTR: + return "IONIC_CMD_VF_SETATTR"; + default: + return "DEVCMD_UNKNOWN"; + } +} + +const char *ionic_vf_attr_to_str(enum ionic_vf_attr attr) +{ + switch (attr) { + case IONIC_VF_ATTR_SPOOFCHK: + return "IONIC_VF_ATTR_SPOOFCHK"; + case IONIC_VF_ATTR_TRUST: + return "IONIC_VF_ATTR_TRUST"; + case IONIC_VF_ATTR_LINKSTATE: + return "IONIC_VF_ATTR_LINKSTATE"; + case IONIC_VF_ATTR_MAC: + return "IONIC_VF_ATTR_MAC"; + case IONIC_VF_ATTR_VLAN: + return "IONIC_VF_ATTR_VLAN"; + case IONIC_VF_ATTR_RATE: + return "IONIC_VF_ATTR_RATE"; + case IONIC_VF_ATTR_STATSADDR: + return "IONIC_VF_ATTR_STATSADDR"; + default: + return "IONIC_VF_ATTR_UNKNOWN"; + } +} + +static void ionic_adminq_flush(struct ionic_lif *lif) +{ + struct ionic_desc_info *desc_info; + unsigned long irqflags; + struct ionic_queue *q; + + spin_lock_irqsave(&lif->adminq_lock, irqflags); + if (!lif->adminqcq) { + spin_unlock_irqrestore(&lif->adminq_lock, irqflags); + return; + } + + q = &lif->adminqcq->q; + + while (q->tail_idx != q->head_idx) { + desc_info = &q->info[q->tail_idx]; + memset(desc_info->desc, 0, sizeof(union ionic_adminq_cmd)); + desc_info->cb = NULL; + desc_info->cb_arg = NULL; + q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); + } + spin_unlock_irqrestore(&lif->adminq_lock, irqflags); +} + +void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode, + u8 status, int err) +{ + const char *stat_str; + + stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : + ionic_error_to_str(status); + + netdev_err(lif->netdev, "%s (%d) failed: %s (%d)\n", + ionic_opcode_to_str(opcode), opcode, stat_str, err); +} + +static int ionic_adminq_check_err(struct ionic_lif *lif, + struct ionic_admin_ctx *ctx, + const bool timeout, + const bool do_msg) +{ + int err = 0; + + if (ctx->comp.comp.status || timeout) { + err = timeout ? -ETIMEDOUT : + ionic_error_to_errno(ctx->comp.comp.status); + + if (do_msg) + ionic_adminq_netdev_err_print(lif, ctx->cmd.cmd.opcode, + ctx->comp.comp.status, err); + + if (timeout) + ionic_adminq_flush(lif); + } + + return err; +} + +static void ionic_adminq_cb(struct ionic_queue *q, + struct ionic_desc_info *desc_info, + struct ionic_cq_info *cq_info, void *cb_arg) +{ + struct ionic_admin_ctx *ctx = cb_arg; + struct ionic_admin_comp *comp; + + if (!ctx) + return; + + comp = cq_info->cq_desc; + + memcpy(&ctx->comp, comp, sizeof(*comp)); + + dev_dbg(q->dev, "comp admin queue command:\n"); + dynamic_hex_dump("comp ", DUMP_PREFIX_OFFSET, 16, 1, + &ctx->comp, sizeof(ctx->comp), true); + + complete_all(&ctx->work); +} + +bool ionic_adminq_poke_doorbell(struct ionic_queue *q) +{ + struct ionic_lif *lif = q->lif; + unsigned long now, then, dif; + unsigned long irqflags; + + spin_lock_irqsave(&lif->adminq_lock, irqflags); + + if (q->tail_idx == q->head_idx) { + spin_unlock_irqrestore(&lif->adminq_lock, irqflags); + return false; + } + + now = READ_ONCE(jiffies); + then = q->dbell_jiffies; + dif = now - then; + + if (dif > q->dbell_deadline) { + ionic_dbell_ring(q->lif->kern_dbpage, q->hw_type, + q->dbval | q->head_idx); + + q->dbell_jiffies = now; + } + + spin_unlock_irqrestore(&lif->adminq_lock, irqflags); + + return true; +} + +int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) +{ + struct ionic_desc_info *desc_info; + unsigned long irqflags; + struct ionic_queue *q; + int err = 0; + + spin_lock_irqsave(&lif->adminq_lock, irqflags); + if (!lif->adminqcq) { + spin_unlock_irqrestore(&lif->adminq_lock, irqflags); + return -EIO; + } + + q = &lif->adminqcq->q; + + if (!ionic_q_has_space(q, 1)) { + err = -ENOSPC; + goto err_out; + } + + err = ionic_heartbeat_check(lif->ionic); + if (err) + goto err_out; + + desc_info = &q->info[q->head_idx]; + memcpy(desc_info->desc, &ctx->cmd, sizeof(ctx->cmd)); + + dev_dbg(&lif->netdev->dev, "post admin queue command:\n"); + dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1, + &ctx->cmd, sizeof(ctx->cmd), true); + + ionic_q_post(q, true, ionic_adminq_cb, ctx); + +err_out: + spin_unlock_irqrestore(&lif->adminq_lock, irqflags); + + return err; +} + +int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx, + const int err, const bool do_msg) +{ + struct net_device *netdev = lif->netdev; + unsigned long time_limit; + unsigned long time_start; + unsigned long time_done; + unsigned long remaining; + const char *name; + + name = ionic_opcode_to_str(ctx->cmd.cmd.opcode); + + if (err) { + if (do_msg && !test_bit(IONIC_LIF_F_FW_RESET, lif->state)) + netdev_err(netdev, "Posting of %s (%d) failed: %d\n", + name, ctx->cmd.cmd.opcode, err); + ctx->comp.comp.status = IONIC_RC_ERROR; + return err; + } + + time_start = jiffies; + time_limit = time_start + HZ * (ulong)DEVCMD_TIMEOUT; + do { + remaining = wait_for_completion_timeout(&ctx->work, + IONIC_ADMINQ_TIME_SLICE); + + /* check for done */ + if (remaining) + break; + + /* force a check of FW status and break out if FW reset */ + (void)ionic_heartbeat_check(lif->ionic); + if ((test_bit(IONIC_LIF_F_FW_RESET, lif->state) && + !lif->ionic->idev.fw_status_ready) || + test_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { + if (do_msg) + netdev_warn(netdev, "%s (%d) interrupted, FW in reset\n", + name, ctx->cmd.cmd.opcode); + ctx->comp.comp.status = IONIC_RC_ERROR; + return -ENXIO; + } + + } while (time_before(jiffies, time_limit)); + time_done = jiffies; + + dev_dbg(lif->ionic->dev, "%s: elapsed %d msecs\n", + __func__, jiffies_to_msecs(time_done - time_start)); + + return ionic_adminq_check_err(lif, ctx, + time_after_eq(time_done, time_limit), + do_msg); +} + +int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) +{ + int err; + + err = ionic_adminq_post(lif, ctx); + + return ionic_adminq_wait(lif, ctx, err, true); +} + +int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) +{ + int err; + + err = ionic_adminq_post(lif, ctx); + + return ionic_adminq_wait(lif, ctx, err, false); +} + +static void ionic_dev_cmd_clean(struct ionic *ionic) +{ + struct ionic_dev *idev = &ionic->idev; + + iowrite32(0, &idev->dev_cmd_regs->doorbell); + memset_io(&idev->dev_cmd_regs->cmd, 0, sizeof(idev->dev_cmd_regs->cmd)); +} + +void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status, + int err) +{ + const char *stat_str; + + stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : + ionic_error_to_str(status); + + dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n", + ionic_opcode_to_str(opcode), opcode, stat_str, err); +} + +static int __ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds, + const bool do_msg) +{ + struct ionic_dev *idev = &ionic->idev; + unsigned long start_time; + unsigned long max_wait; + unsigned long duration; + int done = 0; + bool fw_up; + int opcode; + int err; + + /* Wait for dev cmd to complete, retrying if we get EAGAIN, + * but don't wait any longer than max_seconds. + */ + max_wait = jiffies + (max_seconds * HZ); +try_again: + opcode = readb(&idev->dev_cmd_regs->cmd.cmd.opcode); + start_time = jiffies; + for (fw_up = ionic_is_fw_running(idev); + !done && fw_up && time_before(jiffies, max_wait); + fw_up = ionic_is_fw_running(idev)) { + done = ionic_dev_cmd_done(idev); + if (done) + break; + usleep_range(100, 200); + } + duration = jiffies - start_time; + + dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n", + ionic_opcode_to_str(opcode), opcode, + done, duration / HZ, duration); + + if (!done && !fw_up) { + ionic_dev_cmd_clean(ionic); + dev_warn(ionic->dev, "DEVCMD %s (%d) interrupted - FW is down\n", + ionic_opcode_to_str(opcode), opcode); + return -ENXIO; + } + + if (!done && !time_before(jiffies, max_wait)) { + ionic_dev_cmd_clean(ionic); + dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n", + ionic_opcode_to_str(opcode), opcode, max_seconds); + return -ETIMEDOUT; + } + + err = ionic_dev_cmd_status(&ionic->idev); + if (err) { + if (err == IONIC_RC_EAGAIN && + time_before(jiffies, (max_wait - HZ))) { + dev_dbg(ionic->dev, "DEV_CMD %s (%d), %s (%d) retrying...\n", + ionic_opcode_to_str(opcode), opcode, + ionic_error_to_str(err), err); + + iowrite32(0, &idev->dev_cmd_regs->done); + msleep(1000); + iowrite32(1, &idev->dev_cmd_regs->doorbell); + goto try_again; + } + + if (!(opcode == IONIC_CMD_FW_CONTROL && err == IONIC_RC_EAGAIN)) + if (do_msg) + ionic_dev_cmd_dev_err_print(ionic, opcode, err, + ionic_error_to_errno(err)); + + return ionic_error_to_errno(err); + } + + ionic_dev_cmd_clean(ionic); + + return 0; +} + +int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds) +{ + return __ionic_dev_cmd_wait(ionic, max_seconds, true); +} + +int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_seconds) +{ + return __ionic_dev_cmd_wait(ionic, max_seconds, false); +} + +int ionic_setup(struct ionic *ionic) +{ + int err; + + err = ionic_dev_setup(ionic); + if (err) + return err; + ionic_reset(ionic); + + return 0; +} + +int ionic_identify(struct ionic *ionic) +{ + struct ionic_identity *ident = &ionic->ident; + struct ionic_dev *idev = &ionic->idev; + size_t sz; + int err; + + memset(ident, 0, sizeof(*ident)); + + ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX); + strncpy(ident->drv.driver_ver_str, UTS_RELEASE, + sizeof(ident->drv.driver_ver_str) - 1); + + mutex_lock(&ionic->dev_cmd_lock); + + sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data)); + memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz); + + ionic_dev_cmd_identify(idev, IONIC_IDENTITY_VERSION_1); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + if (!err) { + sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data)); + memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz); + } + mutex_unlock(&ionic->dev_cmd_lock); + + if (err) { + dev_err(ionic->dev, "Cannot identify ionic: %d\n", err); + goto err_out; + } + + if (isprint(idev->dev_info.fw_version[0]) && + isascii(idev->dev_info.fw_version[0])) + dev_info(ionic->dev, "FW: %.*s\n", + (int)(sizeof(idev->dev_info.fw_version) - 1), + idev->dev_info.fw_version); + else + dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n", + (u8)idev->dev_info.fw_version[0], + (u8)idev->dev_info.fw_version[1], + (u8)idev->dev_info.fw_version[2], + (u8)idev->dev_info.fw_version[3]); + + err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC, + &ionic->ident.lif); + if (err) { + dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err); + goto err_out; + } + + return 0; + +err_out: + return err; +} + +int ionic_init(struct ionic *ionic) +{ + struct ionic_dev *idev = &ionic->idev; + int err; + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_init(idev); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + + return err; +} + +int ionic_reset(struct ionic *ionic) +{ + struct ionic_dev *idev = &ionic->idev; + int err; + + if (!ionic_is_fw_running(idev)) + return 0; + + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_reset(idev); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + + return err; +} + +int ionic_port_identify(struct ionic *ionic) +{ + struct ionic_identity *ident = &ionic->ident; + struct ionic_dev *idev = &ionic->idev; + size_t sz; + int err; + + mutex_lock(&ionic->dev_cmd_lock); + + ionic_dev_cmd_port_identify(idev); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + if (!err) { + sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data)); + memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz); + } + + mutex_unlock(&ionic->dev_cmd_lock); + + return err; +} + +int ionic_port_init(struct ionic *ionic) +{ + struct ionic_identity *ident = &ionic->ident; + struct ionic_dev *idev = &ionic->idev; + size_t sz; + int err; + + if (!idev->port_info) { + idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE); + idev->port_info = dma_alloc_coherent(ionic->dev, + idev->port_info_sz, + &idev->port_info_pa, + GFP_KERNEL); + if (!idev->port_info) + return -ENOMEM; + } + + sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data)); + + mutex_lock(&ionic->dev_cmd_lock); + + memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz); + ionic_dev_cmd_port_init(idev); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + + ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP); + (void)ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + + mutex_unlock(&ionic->dev_cmd_lock); + if (err) { + dev_err(ionic->dev, "Failed to init port\n"); + dma_free_coherent(ionic->dev, idev->port_info_sz, + idev->port_info, idev->port_info_pa); + idev->port_info = NULL; + idev->port_info_pa = 0; + } + + return err; +} + +int ionic_port_reset(struct ionic *ionic) +{ + struct ionic_dev *idev = &ionic->idev; + int err = 0; + + if (!idev->port_info) + return 0; + + if (ionic_is_fw_running(idev)) { + mutex_lock(&ionic->dev_cmd_lock); + ionic_dev_cmd_port_reset(idev); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + mutex_unlock(&ionic->dev_cmd_lock); + } + + dma_free_coherent(ionic->dev, idev->port_info_sz, + idev->port_info, idev->port_info_pa); + + idev->port_info = NULL; + idev->port_info_pa = 0; + + return err; +} + +static int __init ionic_init_module(void) +{ + int ret; + + ionic_debugfs_create(); + ret = ionic_bus_register_driver(); + if (ret) + ionic_debugfs_destroy(); + + return ret; +} + +static void __exit ionic_cleanup_module(void) +{ + ionic_bus_unregister_driver(); + ionic_debugfs_destroy(); + + pr_info("%s removed\n", IONIC_DRV_NAME); +} + +module_init(ionic_init_module); +module_exit(ionic_cleanup_module); diff --git a/drivers/net/ethernet/pensando/ionic/ionic_phc.c b/drivers/net/ethernet/pensando/ionic/ionic_phc.c new file mode 100644 index 000000000..887046838 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_phc.c @@ -0,0 +1,647 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2021 Pensando Systems, Inc */ + +#include <linux/netdevice.h> +#include <linux/etherdevice.h> + +#include "ionic.h" +#include "ionic_bus.h" +#include "ionic_lif.h" +#include "ionic_ethtool.h" + +static int ionic_hwstamp_tx_mode(int config_tx_type) +{ + switch (config_tx_type) { + case HWTSTAMP_TX_OFF: + return IONIC_TXSTAMP_OFF; + case HWTSTAMP_TX_ON: + return IONIC_TXSTAMP_ON; + case HWTSTAMP_TX_ONESTEP_SYNC: + return IONIC_TXSTAMP_ONESTEP_SYNC; + case HWTSTAMP_TX_ONESTEP_P2P: + return IONIC_TXSTAMP_ONESTEP_P2P; + default: + return -ERANGE; + } +} + +static u64 ionic_hwstamp_rx_filt(int config_rx_filter) +{ + switch (config_rx_filter) { + case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: + return IONIC_PKT_CLS_PTP1_ALL; + case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: + return IONIC_PKT_CLS_PTP1_SYNC; + case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: + return IONIC_PKT_CLS_PTP1_SYNC | IONIC_PKT_CLS_PTP1_DREQ; + + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + return IONIC_PKT_CLS_PTP2_L4_ALL; + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + return IONIC_PKT_CLS_PTP2_L4_SYNC; + case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: + return IONIC_PKT_CLS_PTP2_L4_SYNC | IONIC_PKT_CLS_PTP2_L4_DREQ; + + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: + return IONIC_PKT_CLS_PTP2_L2_ALL; + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: + return IONIC_PKT_CLS_PTP2_L2_SYNC; + case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: + return IONIC_PKT_CLS_PTP2_L2_SYNC | IONIC_PKT_CLS_PTP2_L2_DREQ; + + case HWTSTAMP_FILTER_PTP_V2_EVENT: + return IONIC_PKT_CLS_PTP2_ALL; + case HWTSTAMP_FILTER_PTP_V2_SYNC: + return IONIC_PKT_CLS_PTP2_SYNC; + case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: + return IONIC_PKT_CLS_PTP2_SYNC | IONIC_PKT_CLS_PTP2_DREQ; + + case HWTSTAMP_FILTER_NTP_ALL: + return IONIC_PKT_CLS_NTP_ALL; + + default: + return 0; + } +} + +static int ionic_lif_hwstamp_set_ts_config(struct ionic_lif *lif, + struct hwtstamp_config *new_ts) +{ + struct ionic *ionic = lif->ionic; + struct hwtstamp_config *config; + struct hwtstamp_config ts; + int tx_mode = 0; + u64 rx_filt = 0; + int err, err2; + bool rx_all; + __le64 mask; + + if (!lif->phc || !lif->phc->ptp) + return -EOPNOTSUPP; + + mutex_lock(&lif->phc->config_lock); + + if (new_ts) { + config = new_ts; + } else { + /* If called with new_ts == NULL, replay the previous request + * primarily for recovery after a FW_RESET. + * We saved the previous configuration request info, so copy + * the previous request for reference, clear the current state + * to match the device's reset state, and run with it. + */ + config = &ts; + memcpy(config, &lif->phc->ts_config, sizeof(*config)); + memset(&lif->phc->ts_config, 0, sizeof(lif->phc->ts_config)); + lif->phc->ts_config_tx_mode = 0; + lif->phc->ts_config_rx_filt = 0; + } + + tx_mode = ionic_hwstamp_tx_mode(config->tx_type); + if (tx_mode < 0) { + err = tx_mode; + goto err_queues; + } + + mask = cpu_to_le64(BIT_ULL(tx_mode)); + if ((ionic->ident.lif.eth.hwstamp_tx_modes & mask) != mask) { + err = -ERANGE; + goto err_queues; + } + + rx_filt = ionic_hwstamp_rx_filt(config->rx_filter); + rx_all = config->rx_filter != HWTSTAMP_FILTER_NONE && !rx_filt; + + mask = cpu_to_le64(rx_filt); + if ((ionic->ident.lif.eth.hwstamp_rx_filters & mask) != mask) { + rx_filt = 0; + rx_all = true; + config->rx_filter = HWTSTAMP_FILTER_ALL; + } + + dev_dbg(ionic->dev, "%s: config_rx_filter %d rx_filt %#llx rx_all %d\n", + __func__, config->rx_filter, rx_filt, rx_all); + + if (tx_mode) { + err = ionic_lif_create_hwstamp_txq(lif); + if (err) + goto err_queues; + } + + if (rx_filt) { + err = ionic_lif_create_hwstamp_rxq(lif); + if (err) + goto err_queues; + } + + if (tx_mode != lif->phc->ts_config_tx_mode) { + err = ionic_lif_set_hwstamp_txmode(lif, tx_mode); + if (err) + goto err_txmode; + } + + if (rx_filt != lif->phc->ts_config_rx_filt) { + err = ionic_lif_set_hwstamp_rxfilt(lif, rx_filt); + if (err) + goto err_rxfilt; + } + + if (rx_all != (lif->phc->ts_config.rx_filter == HWTSTAMP_FILTER_ALL)) { + err = ionic_lif_config_hwstamp_rxq_all(lif, rx_all); + if (err) + goto err_rxall; + } + + memcpy(&lif->phc->ts_config, config, sizeof(*config)); + lif->phc->ts_config_rx_filt = rx_filt; + lif->phc->ts_config_tx_mode = tx_mode; + + mutex_unlock(&lif->phc->config_lock); + + return 0; + +err_rxall: + if (rx_filt != lif->phc->ts_config_rx_filt) { + rx_filt = lif->phc->ts_config_rx_filt; + err2 = ionic_lif_set_hwstamp_rxfilt(lif, rx_filt); + if (err2) + dev_err(ionic->dev, + "Failed to revert rx timestamp filter: %d\n", err2); + } +err_rxfilt: + if (tx_mode != lif->phc->ts_config_tx_mode) { + tx_mode = lif->phc->ts_config_tx_mode; + err2 = ionic_lif_set_hwstamp_txmode(lif, tx_mode); + if (err2) + dev_err(ionic->dev, + "Failed to revert tx timestamp mode: %d\n", err2); + } +err_txmode: + /* special queues remain allocated, just unused */ +err_queues: + mutex_unlock(&lif->phc->config_lock); + return err; +} + +int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr) +{ + struct hwtstamp_config config; + int err; + + if (!lif->phc || !lif->phc->ptp) + return -EOPNOTSUPP; + + if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) + return -EFAULT; + + mutex_lock(&lif->queue_lock); + err = ionic_lif_hwstamp_set_ts_config(lif, &config); + mutex_unlock(&lif->queue_lock); + if (err) { + netdev_info(lif->netdev, "hwstamp set failed: %d\n", err); + return err; + } + + if (copy_to_user(ifr->ifr_data, &config, sizeof(config))) + return -EFAULT; + + return 0; +} + +void ionic_lif_hwstamp_replay(struct ionic_lif *lif) +{ + int err; + + if (!lif->phc || !lif->phc->ptp) + return; + + mutex_lock(&lif->queue_lock); + err = ionic_lif_hwstamp_set_ts_config(lif, NULL); + mutex_unlock(&lif->queue_lock); + if (err) + netdev_info(lif->netdev, "hwstamp replay failed: %d\n", err); +} + +void ionic_lif_hwstamp_recreate_queues(struct ionic_lif *lif) +{ + int err; + + if (!lif->phc || !lif->phc->ptp) + return; + + mutex_lock(&lif->phc->config_lock); + + if (lif->phc->ts_config_tx_mode) { + err = ionic_lif_create_hwstamp_txq(lif); + if (err) + netdev_info(lif->netdev, "hwstamp recreate txq failed: %d\n", err); + } + + if (lif->phc->ts_config_rx_filt) { + err = ionic_lif_create_hwstamp_rxq(lif); + if (err) + netdev_info(lif->netdev, "hwstamp recreate rxq failed: %d\n", err); + } + + mutex_unlock(&lif->phc->config_lock); +} + +int ionic_lif_hwstamp_get(struct ionic_lif *lif, struct ifreq *ifr) +{ + struct hwtstamp_config config; + + if (!lif->phc || !lif->phc->ptp) + return -EOPNOTSUPP; + + mutex_lock(&lif->phc->config_lock); + memcpy(&config, &lif->phc->ts_config, sizeof(config)); + mutex_unlock(&lif->phc->config_lock); + + if (copy_to_user(ifr->ifr_data, &config, sizeof(config))) + return -EFAULT; + return 0; +} + +static u64 ionic_hwstamp_read(struct ionic *ionic, + struct ptp_system_timestamp *sts) +{ + u32 tick_high_before, tick_high, tick_low; + + /* read and discard low part to defeat hw staging of high part */ + (void)ioread32(&ionic->idev.hwstamp_regs->tick_low); + + tick_high_before = ioread32(&ionic->idev.hwstamp_regs->tick_high); + + ptp_read_system_prets(sts); + tick_low = ioread32(&ionic->idev.hwstamp_regs->tick_low); + ptp_read_system_postts(sts); + + tick_high = ioread32(&ionic->idev.hwstamp_regs->tick_high); + + /* If tick_high changed, re-read tick_low once more. Assume tick_high + * cannot change again so soon as in the span of re-reading tick_low. + */ + if (tick_high != tick_high_before) { + ptp_read_system_prets(sts); + tick_low = ioread32(&ionic->idev.hwstamp_regs->tick_low); + ptp_read_system_postts(sts); + } + + return (u64)tick_low | ((u64)tick_high << 32); +} + +static u64 ionic_cc_read(const struct cyclecounter *cc) +{ + struct ionic_phc *phc = container_of(cc, struct ionic_phc, cc); + struct ionic *ionic = phc->lif->ionic; + + return ionic_hwstamp_read(ionic, NULL); +} + +static int ionic_setphc_cmd(struct ionic_phc *phc, struct ionic_admin_ctx *ctx) +{ + ctx->work = COMPLETION_INITIALIZER_ONSTACK(ctx->work); + + ctx->cmd.lif_setphc.opcode = IONIC_CMD_LIF_SETPHC; + ctx->cmd.lif_setphc.lif_index = cpu_to_le16(phc->lif->index); + + ctx->cmd.lif_setphc.tick = cpu_to_le64(phc->tc.cycle_last); + ctx->cmd.lif_setphc.nsec = cpu_to_le64(phc->tc.nsec); + ctx->cmd.lif_setphc.frac = cpu_to_le64(phc->tc.frac); + ctx->cmd.lif_setphc.mult = cpu_to_le32(phc->cc.mult); + ctx->cmd.lif_setphc.shift = cpu_to_le32(phc->cc.shift); + + return ionic_adminq_post(phc->lif, ctx); +} + +static int ionic_phc_adjfine(struct ptp_clock_info *info, long scaled_ppm) +{ + struct ionic_phc *phc = container_of(info, struct ionic_phc, ptp_info); + struct ionic_admin_ctx ctx = {}; + unsigned long irqflags; + s64 adj; + int err; + + /* Reject phc adjustments during device upgrade */ + if (test_bit(IONIC_LIF_F_FW_RESET, phc->lif->state)) + return -EBUSY; + + /* Adjustment value scaled by 2^16 million */ + adj = (s64)scaled_ppm * phc->init_cc_mult; + + /* Adjustment value to scale */ + adj /= (s64)SCALED_PPM; + + /* Final adjusted multiplier */ + adj += phc->init_cc_mult; + + spin_lock_irqsave(&phc->lock, irqflags); + + /* update the point-in-time basis to now, before adjusting the rate */ + timecounter_read(&phc->tc); + phc->cc.mult = adj; + + /* Setphc commands are posted in-order, sequenced by phc->lock. We + * need to drop the lock before waiting for the command to complete. + */ + err = ionic_setphc_cmd(phc, &ctx); + + spin_unlock_irqrestore(&phc->lock, irqflags); + + return ionic_adminq_wait(phc->lif, &ctx, err, true); +} + +static int ionic_phc_adjtime(struct ptp_clock_info *info, s64 delta) +{ + struct ionic_phc *phc = container_of(info, struct ionic_phc, ptp_info); + struct ionic_admin_ctx ctx = {}; + unsigned long irqflags; + int err; + + /* Reject phc adjustments during device upgrade */ + if (test_bit(IONIC_LIF_F_FW_RESET, phc->lif->state)) + return -EBUSY; + + spin_lock_irqsave(&phc->lock, irqflags); + + timecounter_adjtime(&phc->tc, delta); + + /* Setphc commands are posted in-order, sequenced by phc->lock. We + * need to drop the lock before waiting for the command to complete. + */ + err = ionic_setphc_cmd(phc, &ctx); + + spin_unlock_irqrestore(&phc->lock, irqflags); + + return ionic_adminq_wait(phc->lif, &ctx, err, true); +} + +static int ionic_phc_settime64(struct ptp_clock_info *info, + const struct timespec64 *ts) +{ + struct ionic_phc *phc = container_of(info, struct ionic_phc, ptp_info); + struct ionic_admin_ctx ctx = {}; + unsigned long irqflags; + int err; + u64 ns; + + /* Reject phc adjustments during device upgrade */ + if (test_bit(IONIC_LIF_F_FW_RESET, phc->lif->state)) + return -EBUSY; + + ns = timespec64_to_ns(ts); + + spin_lock_irqsave(&phc->lock, irqflags); + + timecounter_init(&phc->tc, &phc->cc, ns); + + /* Setphc commands are posted in-order, sequenced by phc->lock. We + * need to drop the lock before waiting for the command to complete. + */ + err = ionic_setphc_cmd(phc, &ctx); + + spin_unlock_irqrestore(&phc->lock, irqflags); + + return ionic_adminq_wait(phc->lif, &ctx, err, true); +} + +static int ionic_phc_gettimex64(struct ptp_clock_info *info, + struct timespec64 *ts, + struct ptp_system_timestamp *sts) +{ + struct ionic_phc *phc = container_of(info, struct ionic_phc, ptp_info); + struct ionic *ionic = phc->lif->ionic; + unsigned long irqflags; + u64 tick, ns; + + /* Do not attempt to read device time during upgrade */ + if (test_bit(IONIC_LIF_F_FW_RESET, phc->lif->state)) + return -EBUSY; + + spin_lock_irqsave(&phc->lock, irqflags); + + tick = ionic_hwstamp_read(ionic, sts); + + ns = timecounter_cyc2time(&phc->tc, tick); + + spin_unlock_irqrestore(&phc->lock, irqflags); + + *ts = ns_to_timespec64(ns); + + return 0; +} + +static long ionic_phc_aux_work(struct ptp_clock_info *info) +{ + struct ionic_phc *phc = container_of(info, struct ionic_phc, ptp_info); + struct ionic_admin_ctx ctx = {}; + unsigned long irqflags; + int err; + + /* Do not update phc during device upgrade, but keep polling to resume + * after upgrade. Since we don't update the point in time basis, there + * is no expectation that we are maintaining the phc time during the + * upgrade. After upgrade, it will need to be readjusted back to the + * correct time by the ptp daemon. + */ + if (test_bit(IONIC_LIF_F_FW_RESET, phc->lif->state)) + return phc->aux_work_delay; + + spin_lock_irqsave(&phc->lock, irqflags); + + /* update point-in-time basis to now */ + timecounter_read(&phc->tc); + + /* Setphc commands are posted in-order, sequenced by phc->lock. We + * need to drop the lock before waiting for the command to complete. + */ + err = ionic_setphc_cmd(phc, &ctx); + + spin_unlock_irqrestore(&phc->lock, irqflags); + + ionic_adminq_wait(phc->lif, &ctx, err, true); + + return phc->aux_work_delay; +} + +ktime_t ionic_lif_phc_ktime(struct ionic_lif *lif, u64 tick) +{ + unsigned long irqflags; + u64 ns; + + if (!lif->phc) + return 0; + + spin_lock_irqsave(&lif->phc->lock, irqflags); + ns = timecounter_cyc2time(&lif->phc->tc, tick); + spin_unlock_irqrestore(&lif->phc->lock, irqflags); + + return ns_to_ktime(ns); +} + +static const struct ptp_clock_info ionic_ptp_info = { + .owner = THIS_MODULE, + .name = "ionic_ptp", + .adjfine = ionic_phc_adjfine, + .adjtime = ionic_phc_adjtime, + .gettimex64 = ionic_phc_gettimex64, + .settime64 = ionic_phc_settime64, + .do_aux_work = ionic_phc_aux_work, +}; + +void ionic_lif_register_phc(struct ionic_lif *lif) +{ + if (!lif->phc || !(lif->hw_features & IONIC_ETH_HW_TIMESTAMP)) + return; + + lif->phc->ptp = ptp_clock_register(&lif->phc->ptp_info, lif->ionic->dev); + + if (IS_ERR(lif->phc->ptp)) { + dev_warn(lif->ionic->dev, "Cannot register phc device: %ld\n", + PTR_ERR(lif->phc->ptp)); + + lif->phc->ptp = NULL; + } + + if (lif->phc->ptp) + ptp_schedule_worker(lif->phc->ptp, lif->phc->aux_work_delay); +} + +void ionic_lif_unregister_phc(struct ionic_lif *lif) +{ + if (!lif->phc || !lif->phc->ptp) + return; + + ptp_clock_unregister(lif->phc->ptp); + + lif->phc->ptp = NULL; +} + +void ionic_lif_alloc_phc(struct ionic_lif *lif) +{ + struct ionic *ionic = lif->ionic; + struct ionic_phc *phc; + u64 delay, diff, mult; + u64 frac = 0; + u64 features; + u32 shift; + + if (!ionic->idev.hwstamp_regs) + return; + + features = le64_to_cpu(ionic->ident.lif.eth.config.features); + if (!(features & IONIC_ETH_HW_TIMESTAMP)) + return; + + phc = devm_kzalloc(ionic->dev, sizeof(*phc), GFP_KERNEL); + if (!phc) + return; + + phc->lif = lif; + + phc->cc.read = ionic_cc_read; + phc->cc.mask = le64_to_cpu(ionic->ident.dev.hwstamp_mask); + phc->cc.mult = le32_to_cpu(ionic->ident.dev.hwstamp_mult); + phc->cc.shift = le32_to_cpu(ionic->ident.dev.hwstamp_shift); + + if (!phc->cc.mult) { + dev_err(lif->ionic->dev, + "Invalid device PHC mask multiplier %u, disabling HW timestamp support\n", + phc->cc.mult); + devm_kfree(lif->ionic->dev, phc); + lif->phc = NULL; + return; + } + + dev_dbg(lif->ionic->dev, "Device PHC mask %#llx mult %u shift %u\n", + phc->cc.mask, phc->cc.mult, phc->cc.shift); + + spin_lock_init(&phc->lock); + mutex_init(&phc->config_lock); + + /* max ticks is limited by the multiplier, or by the update period. */ + if (phc->cc.shift + 2 + ilog2(IONIC_PHC_UPDATE_NS) >= 64) { + /* max ticks that do not overflow when multiplied by max + * adjusted multiplier (twice the initial multiplier) + */ + diff = U64_MAX / phc->cc.mult / 2; + } else { + /* approx ticks at four times the update period */ + diff = (u64)IONIC_PHC_UPDATE_NS << (phc->cc.shift + 2); + diff = DIV_ROUND_UP(diff, phc->cc.mult); + } + + /* transform to bitmask */ + diff |= diff >> 1; + diff |= diff >> 2; + diff |= diff >> 4; + diff |= diff >> 8; + diff |= diff >> 16; + diff |= diff >> 32; + + /* constrain to the hardware bitmask, and use this as the bitmask */ + diff &= phc->cc.mask; + phc->cc.mask = diff; + + /* the wrap period is now defined by diff (or phc->cc.mask) + * + * we will update the time basis at about 1/4 the wrap period, so + * should not see a difference of more than +/- diff/4. + * + * this is sufficient not see a difference of more than +/- diff/2, as + * required by timecounter_cyc2time, to detect an old time stamp. + * + * adjust the initial multiplier, being careful to avoid overflow: + * - do not overflow 63 bits: init_cc_mult * SCALED_PPM + * - do not overflow 64 bits: max_mult * (diff / 2) + * + * we want to increase the initial multiplier as much as possible, to + * allow for more precise adjustment in ionic_phc_adjfine. + * + * only adjust the multiplier if we can double it or more. + */ + mult = U64_MAX / 2 / max(diff / 2, SCALED_PPM); + shift = mult / phc->cc.mult; + if (shift >= 2) { + /* initial multiplier will be 2^n of hardware cc.mult */ + shift = fls(shift); + /* increase cc.mult and cc.shift by the same 2^n and n. */ + phc->cc.mult <<= shift; + phc->cc.shift += shift; + } + + dev_dbg(lif->ionic->dev, "Initial PHC mask %#llx mult %u shift %u\n", + phc->cc.mask, phc->cc.mult, phc->cc.shift); + + /* frequency adjustments are relative to the initial multiplier */ + phc->init_cc_mult = phc->cc.mult; + + timecounter_init(&phc->tc, &phc->cc, ktime_get_real_ns()); + + /* Update cycle_last at 1/4 the wrap period, or IONIC_PHC_UPDATE_NS */ + delay = min_t(u64, IONIC_PHC_UPDATE_NS, + cyclecounter_cyc2ns(&phc->cc, diff / 4, 0, &frac)); + dev_dbg(lif->ionic->dev, "Work delay %llu ms\n", delay / NSEC_PER_MSEC); + + phc->aux_work_delay = nsecs_to_jiffies(delay); + + phc->ptp_info = ionic_ptp_info; + + /* We have allowed to adjust the multiplier up to +/- 1 part per 1. + * Here expressed as NORMAL_PPB (1 billion parts per billion). + */ + phc->ptp_info.max_adj = NORMAL_PPB; + + lif->phc = phc; +} + +void ionic_lif_free_phc(struct ionic_lif *lif) +{ + if (!lif->phc) + return; + + mutex_destroy(&lif->phc->config_lock); + + devm_kfree(lif->ionic->dev, lif->phc); + lif->phc = NULL; +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_regs.h b/drivers/net/ethernet/pensando/ionic/ionic_regs.h new file mode 100644 index 000000000..2e174f45c --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_regs.h @@ -0,0 +1,136 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR Linux-OpenIB) OR BSD-2-Clause */ +/* Copyright (c) 2018-2019 Pensando Systems, Inc. All rights reserved. */ + +#ifndef IONIC_REGS_H +#define IONIC_REGS_H + +#include <linux/io.h> + +/** struct ionic_intr - interrupt control register set. + * @coal_init: coalesce timer initial value. + * @mask: interrupt mask value. + * @credits: interrupt credit count and return. + * @mask_assert: interrupt mask value on assert. + * @coal: coalesce timer time remaining. + */ +struct ionic_intr { + u32 coal_init; + u32 mask; + u32 credits; + u32 mask_assert; + u32 coal; + u32 rsvd[3]; +}; + +#define IONIC_INTR_CTRL_REGS_MAX 2048 +#define IONIC_INTR_CTRL_COAL_MAX 0x3F + +/** enum ionic_intr_mask_vals - valid values for mask and mask_assert. + * @IONIC_INTR_MASK_CLEAR: unmask interrupt. + * @IONIC_INTR_MASK_SET: mask interrupt. + */ +enum ionic_intr_mask_vals { + IONIC_INTR_MASK_CLEAR = 0, + IONIC_INTR_MASK_SET = 1, +}; + +/** enum ionic_intr_credits_bits - bitwise composition of credits values. + * @IONIC_INTR_CRED_COUNT: bit mask of credit count, no shift needed. + * @IONIC_INTR_CRED_COUNT_SIGNED: bit mask of credit count, including sign bit. + * @IONIC_INTR_CRED_UNMASK: unmask the interrupt. + * @IONIC_INTR_CRED_RESET_COALESCE: reset the coalesce timer. + * @IONIC_INTR_CRED_REARM: unmask the and reset the timer. + */ +enum ionic_intr_credits_bits { + IONIC_INTR_CRED_COUNT = 0x7fffu, + IONIC_INTR_CRED_COUNT_SIGNED = 0xffffu, + IONIC_INTR_CRED_UNMASK = 0x10000u, + IONIC_INTR_CRED_RESET_COALESCE = 0x20000u, + IONIC_INTR_CRED_REARM = (IONIC_INTR_CRED_UNMASK | + IONIC_INTR_CRED_RESET_COALESCE), +}; + +static inline void ionic_intr_coal_init(struct ionic_intr __iomem *intr_ctrl, + int intr_idx, u32 coal) +{ + iowrite32(coal, &intr_ctrl[intr_idx].coal_init); +} + +static inline void ionic_intr_mask(struct ionic_intr __iomem *intr_ctrl, + int intr_idx, u32 mask) +{ + iowrite32(mask, &intr_ctrl[intr_idx].mask); +} + +static inline void ionic_intr_credits(struct ionic_intr __iomem *intr_ctrl, + int intr_idx, u32 cred, u32 flags) +{ + if (WARN_ON_ONCE(cred > IONIC_INTR_CRED_COUNT)) { + cred = ioread32(&intr_ctrl[intr_idx].credits); + cred &= IONIC_INTR_CRED_COUNT_SIGNED; + } + + iowrite32(cred | flags, &intr_ctrl[intr_idx].credits); +} + +static inline void ionic_intr_clean(struct ionic_intr __iomem *intr_ctrl, + int intr_idx) +{ + u32 cred; + + cred = ioread32(&intr_ctrl[intr_idx].credits); + cred &= IONIC_INTR_CRED_COUNT_SIGNED; + cred |= IONIC_INTR_CRED_RESET_COALESCE; + iowrite32(cred, &intr_ctrl[intr_idx].credits); +} + +static inline void ionic_intr_mask_assert(struct ionic_intr __iomem *intr_ctrl, + int intr_idx, u32 mask) +{ + iowrite32(mask, &intr_ctrl[intr_idx].mask_assert); +} + +/** enum ionic_dbell_bits - bitwise composition of dbell values. + * + * @IONIC_DBELL_QID_MASK: unshifted mask of valid queue id bits. + * @IONIC_DBELL_QID_SHIFT: queue id shift amount in dbell value. + * @IONIC_DBELL_QID: macro to build QID component of dbell value. + * + * @IONIC_DBELL_RING_MASK: unshifted mask of valid ring bits. + * @IONIC_DBELL_RING_SHIFT: ring shift amount in dbell value. + * @IONIC_DBELL_RING: macro to build ring component of dbell value. + * + * @IONIC_DBELL_RING_0: ring zero dbell component value. + * @IONIC_DBELL_RING_1: ring one dbell component value. + * @IONIC_DBELL_RING_2: ring two dbell component value. + * @IONIC_DBELL_RING_3: ring three dbell component value. + * + * @IONIC_DBELL_INDEX_MASK: bit mask of valid index bits, no shift needed. + */ +enum ionic_dbell_bits { + IONIC_DBELL_QID_MASK = 0xffffff, + IONIC_DBELL_QID_SHIFT = 24, + +#define IONIC_DBELL_QID(n) \ + (((u64)(n) & IONIC_DBELL_QID_MASK) << IONIC_DBELL_QID_SHIFT) + + IONIC_DBELL_RING_MASK = 0x7, + IONIC_DBELL_RING_SHIFT = 16, + +#define IONIC_DBELL_RING(n) \ + (((u64)(n) & IONIC_DBELL_RING_MASK) << IONIC_DBELL_RING_SHIFT) + + IONIC_DBELL_RING_0 = 0, + IONIC_DBELL_RING_1 = IONIC_DBELL_RING(1), + IONIC_DBELL_RING_2 = IONIC_DBELL_RING(2), + IONIC_DBELL_RING_3 = IONIC_DBELL_RING(3), + + IONIC_DBELL_INDEX_MASK = 0xffff, +}; + +static inline void ionic_dbell_ring(u64 __iomem *db_page, int qtype, u64 val) +{ + writeq(val, &db_page[qtype]); +} + +#endif /* IONIC_REGS_H */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c new file mode 100644 index 000000000..b7363376d --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c @@ -0,0 +1,619 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/netdevice.h> +#include <linux/dynamic_debug.h> +#include <linux/etherdevice.h> +#include <linux/list.h> + +#include "ionic.h" +#include "ionic_lif.h" +#include "ionic_rx_filter.h" + +void ionic_rx_filter_free(struct ionic_lif *lif, struct ionic_rx_filter *f) +{ + struct device *dev = lif->ionic->dev; + + hlist_del(&f->by_id); + hlist_del(&f->by_hash); + devm_kfree(dev, f); +} + +void ionic_rx_filter_replay(struct ionic_lif *lif) +{ + struct ionic_rx_filter_add_cmd *ac; + struct hlist_head new_id_list; + struct ionic_admin_ctx ctx; + struct ionic_rx_filter *f; + struct hlist_head *head; + struct hlist_node *tmp; + unsigned int key; + unsigned int i; + int err; + + INIT_HLIST_HEAD(&new_id_list); + ac = &ctx.cmd.rx_filter_add; + + for (i = 0; i < IONIC_RX_FILTER_HLISTS; i++) { + head = &lif->rx_filters.by_id[i]; + hlist_for_each_entry_safe(f, tmp, head, by_id) { + ctx.work = COMPLETION_INITIALIZER_ONSTACK(ctx.work); + memcpy(ac, &f->cmd, sizeof(f->cmd)); + dev_dbg(&lif->netdev->dev, "replay filter command:\n"); + dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1, + &ctx.cmd, sizeof(ctx.cmd), true); + + err = ionic_adminq_post_wait(lif, &ctx); + if (err) { + switch (le16_to_cpu(ac->match)) { + case IONIC_RX_FILTER_MATCH_VLAN: + netdev_info(lif->netdev, "Replay failed - %d: vlan %d\n", + err, + le16_to_cpu(ac->vlan.vlan)); + break; + case IONIC_RX_FILTER_MATCH_MAC: + netdev_info(lif->netdev, "Replay failed - %d: mac %pM\n", + err, ac->mac.addr); + break; + case IONIC_RX_FILTER_MATCH_MAC_VLAN: + netdev_info(lif->netdev, "Replay failed - %d: vlan %d mac %pM\n", + err, + le16_to_cpu(ac->vlan.vlan), + ac->mac.addr); + break; + } + spin_lock_bh(&lif->rx_filters.lock); + ionic_rx_filter_free(lif, f); + spin_unlock_bh(&lif->rx_filters.lock); + + continue; + } + + /* remove from old id list, save new id in tmp list */ + spin_lock_bh(&lif->rx_filters.lock); + hlist_del(&f->by_id); + spin_unlock_bh(&lif->rx_filters.lock); + f->filter_id = le32_to_cpu(ctx.comp.rx_filter_add.filter_id); + hlist_add_head(&f->by_id, &new_id_list); + } + } + + /* rebuild the by_id hash lists with the new filter ids */ + spin_lock_bh(&lif->rx_filters.lock); + hlist_for_each_entry_safe(f, tmp, &new_id_list, by_id) { + key = f->filter_id & IONIC_RX_FILTER_HLISTS_MASK; + head = &lif->rx_filters.by_id[key]; + hlist_add_head(&f->by_id, head); + } + spin_unlock_bh(&lif->rx_filters.lock); +} + +int ionic_rx_filters_init(struct ionic_lif *lif) +{ + unsigned int i; + + spin_lock_init(&lif->rx_filters.lock); + + spin_lock_bh(&lif->rx_filters.lock); + for (i = 0; i < IONIC_RX_FILTER_HLISTS; i++) { + INIT_HLIST_HEAD(&lif->rx_filters.by_hash[i]); + INIT_HLIST_HEAD(&lif->rx_filters.by_id[i]); + } + spin_unlock_bh(&lif->rx_filters.lock); + + return 0; +} + +void ionic_rx_filters_deinit(struct ionic_lif *lif) +{ + struct ionic_rx_filter *f; + struct hlist_head *head; + struct hlist_node *tmp; + unsigned int i; + + spin_lock_bh(&lif->rx_filters.lock); + for (i = 0; i < IONIC_RX_FILTER_HLISTS; i++) { + head = &lif->rx_filters.by_id[i]; + hlist_for_each_entry_safe(f, tmp, head, by_id) + ionic_rx_filter_free(lif, f); + } + spin_unlock_bh(&lif->rx_filters.lock); +} + +int ionic_rx_filter_save(struct ionic_lif *lif, u32 flow_id, u16 rxq_index, + u32 hash, struct ionic_admin_ctx *ctx, + enum ionic_filter_state state) +{ + struct device *dev = lif->ionic->dev; + struct ionic_rx_filter_add_cmd *ac; + struct ionic_rx_filter *f = NULL; + struct hlist_head *head; + unsigned int key; + + ac = &ctx->cmd.rx_filter_add; + + switch (le16_to_cpu(ac->match)) { + case IONIC_RX_FILTER_MATCH_VLAN: + key = le16_to_cpu(ac->vlan.vlan); + f = ionic_rx_filter_by_vlan(lif, le16_to_cpu(ac->vlan.vlan)); + break; + case IONIC_RX_FILTER_MATCH_MAC: + key = *(u32 *)ac->mac.addr; + f = ionic_rx_filter_by_addr(lif, ac->mac.addr); + break; + case IONIC_RX_FILTER_MATCH_MAC_VLAN: + key = le16_to_cpu(ac->mac_vlan.vlan); + break; + case IONIC_RX_FILTER_STEER_PKTCLASS: + key = 0; + break; + default: + return -EINVAL; + } + + if (f) { + /* remove from current linking so we can refresh it */ + hlist_del(&f->by_id); + hlist_del(&f->by_hash); + } else { + f = devm_kzalloc(dev, sizeof(*f), GFP_ATOMIC); + if (!f) + return -ENOMEM; + } + + f->flow_id = flow_id; + f->filter_id = le32_to_cpu(ctx->comp.rx_filter_add.filter_id); + f->state = state; + f->rxq_index = rxq_index; + memcpy(&f->cmd, ac, sizeof(f->cmd)); + netdev_dbg(lif->netdev, "rx_filter add filter_id %d\n", f->filter_id); + + INIT_HLIST_NODE(&f->by_hash); + INIT_HLIST_NODE(&f->by_id); + + key = hash_32(key, IONIC_RX_FILTER_HASH_BITS); + head = &lif->rx_filters.by_hash[key]; + hlist_add_head(&f->by_hash, head); + + key = f->filter_id & IONIC_RX_FILTER_HLISTS_MASK; + head = &lif->rx_filters.by_id[key]; + hlist_add_head(&f->by_id, head); + + return 0; +} + +struct ionic_rx_filter *ionic_rx_filter_by_vlan(struct ionic_lif *lif, u16 vid) +{ + struct ionic_rx_filter *f; + struct hlist_head *head; + unsigned int key; + + key = hash_32(vid, IONIC_RX_FILTER_HASH_BITS); + head = &lif->rx_filters.by_hash[key]; + + hlist_for_each_entry(f, head, by_hash) { + if (le16_to_cpu(f->cmd.match) != IONIC_RX_FILTER_MATCH_VLAN) + continue; + if (le16_to_cpu(f->cmd.vlan.vlan) == vid) + return f; + } + + return NULL; +} + +struct ionic_rx_filter *ionic_rx_filter_by_addr(struct ionic_lif *lif, + const u8 *addr) +{ + struct ionic_rx_filter *f; + struct hlist_head *head; + unsigned int key; + + key = hash_32(*(u32 *)addr, IONIC_RX_FILTER_HASH_BITS); + head = &lif->rx_filters.by_hash[key]; + + hlist_for_each_entry(f, head, by_hash) { + if (le16_to_cpu(f->cmd.match) != IONIC_RX_FILTER_MATCH_MAC) + continue; + if (memcmp(addr, f->cmd.mac.addr, ETH_ALEN) == 0) + return f; + } + + return NULL; +} + +struct ionic_rx_filter *ionic_rx_filter_rxsteer(struct ionic_lif *lif) +{ + struct ionic_rx_filter *f; + struct hlist_head *head; + unsigned int key; + + key = hash_32(0, IONIC_RX_FILTER_HASH_BITS); + head = &lif->rx_filters.by_hash[key]; + + hlist_for_each_entry(f, head, by_hash) { + if (le16_to_cpu(f->cmd.match) != IONIC_RX_FILTER_STEER_PKTCLASS) + continue; + return f; + } + + return NULL; +} + +static struct ionic_rx_filter *ionic_rx_filter_find(struct ionic_lif *lif, + struct ionic_rx_filter_add_cmd *ac) +{ + switch (le16_to_cpu(ac->match)) { + case IONIC_RX_FILTER_MATCH_VLAN: + return ionic_rx_filter_by_vlan(lif, le16_to_cpu(ac->vlan.vlan)); + case IONIC_RX_FILTER_MATCH_MAC: + return ionic_rx_filter_by_addr(lif, ac->mac.addr); + default: + netdev_err(lif->netdev, "unsupported filter match %d", + le16_to_cpu(ac->match)); + return NULL; + } +} + +int ionic_lif_list_addr(struct ionic_lif *lif, const u8 *addr, bool mode) +{ + struct ionic_rx_filter *f; + int err; + + spin_lock_bh(&lif->rx_filters.lock); + + f = ionic_rx_filter_by_addr(lif, addr); + if (mode == ADD_ADDR && !f) { + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.rx_filter_add = { + .opcode = IONIC_CMD_RX_FILTER_ADD, + .lif_index = cpu_to_le16(lif->index), + .match = cpu_to_le16(IONIC_RX_FILTER_MATCH_MAC), + }, + }; + + memcpy(ctx.cmd.rx_filter_add.mac.addr, addr, ETH_ALEN); + err = ionic_rx_filter_save(lif, 0, IONIC_RXQ_INDEX_ANY, 0, &ctx, + IONIC_FILTER_STATE_NEW); + if (err) { + spin_unlock_bh(&lif->rx_filters.lock); + return err; + } + + } else if (mode == ADD_ADDR && f) { + if (f->state == IONIC_FILTER_STATE_OLD) + f->state = IONIC_FILTER_STATE_SYNCED; + + } else if (mode == DEL_ADDR && f) { + if (f->state == IONIC_FILTER_STATE_NEW) + ionic_rx_filter_free(lif, f); + else if (f->state == IONIC_FILTER_STATE_SYNCED) + f->state = IONIC_FILTER_STATE_OLD; + } else if (mode == DEL_ADDR && !f) { + spin_unlock_bh(&lif->rx_filters.lock); + return -ENOENT; + } + + spin_unlock_bh(&lif->rx_filters.lock); + + set_bit(IONIC_LIF_F_FILTER_SYNC_NEEDED, lif->state); + + return 0; +} + +static int ionic_lif_filter_add(struct ionic_lif *lif, + struct ionic_rx_filter_add_cmd *ac) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + }; + struct ionic_rx_filter *f; + int nfilters; + int err = 0; + + ctx.cmd.rx_filter_add = *ac; + ctx.cmd.rx_filter_add.opcode = IONIC_CMD_RX_FILTER_ADD, + ctx.cmd.rx_filter_add.lif_index = cpu_to_le16(lif->index), + + spin_lock_bh(&lif->rx_filters.lock); + f = ionic_rx_filter_find(lif, &ctx.cmd.rx_filter_add); + if (f) { + /* don't bother if we already have it and it is sync'd */ + if (f->state == IONIC_FILTER_STATE_SYNCED) { + spin_unlock_bh(&lif->rx_filters.lock); + return 0; + } + + /* mark preemptively as sync'd to block any parallel attempts */ + f->state = IONIC_FILTER_STATE_SYNCED; + } else { + /* save as SYNCED to catch any DEL requests while processing */ + err = ionic_rx_filter_save(lif, 0, IONIC_RXQ_INDEX_ANY, 0, &ctx, + IONIC_FILTER_STATE_SYNCED); + } + spin_unlock_bh(&lif->rx_filters.lock); + if (err) + return err; + + /* Don't bother with the write to FW if we know there's no room, + * we can try again on the next sync attempt. + * Since the FW doesn't have a way to tell us the vlan limit, + * we start max_vlans at 0 until we hit the ENOSPC error. + */ + switch (le16_to_cpu(ctx.cmd.rx_filter_add.match)) { + case IONIC_RX_FILTER_MATCH_VLAN: + netdev_dbg(lif->netdev, "%s: rx_filter add VLAN %d\n", + __func__, ctx.cmd.rx_filter_add.vlan.vlan); + if (lif->max_vlans && lif->nvlans >= lif->max_vlans) + err = -ENOSPC; + break; + case IONIC_RX_FILTER_MATCH_MAC: + netdev_dbg(lif->netdev, "%s: rx_filter add ADDR %pM\n", + __func__, ctx.cmd.rx_filter_add.mac.addr); + nfilters = le32_to_cpu(lif->identity->eth.max_ucast_filters); + if ((lif->nucast + lif->nmcast) >= nfilters) + err = -ENOSPC; + break; + } + + if (err != -ENOSPC) + err = ionic_adminq_post_wait_nomsg(lif, &ctx); + + spin_lock_bh(&lif->rx_filters.lock); + + if (err && err != -EEXIST) { + /* set the state back to NEW so we can try again later */ + f = ionic_rx_filter_find(lif, &ctx.cmd.rx_filter_add); + if (f && f->state == IONIC_FILTER_STATE_SYNCED) { + f->state = IONIC_FILTER_STATE_NEW; + + /* If -ENOSPC we won't waste time trying to sync again + * until there is a delete that might make room + */ + if (err != -ENOSPC) + set_bit(IONIC_LIF_F_FILTER_SYNC_NEEDED, lif->state); + } + + spin_unlock_bh(&lif->rx_filters.lock); + + /* store the max_vlans limit that we found */ + if (err == -ENOSPC && + le16_to_cpu(ctx.cmd.rx_filter_add.match) == IONIC_RX_FILTER_MATCH_VLAN) + lif->max_vlans = lif->nvlans; + + /* Prevent unnecessary error messages on recoverable + * errors as the filter will get retried on the next + * sync attempt. + */ + switch (err) { + case -ENOSPC: + case -ENXIO: + case -ETIMEDOUT: + case -EAGAIN: + case -EBUSY: + return 0; + default: + break; + } + + ionic_adminq_netdev_err_print(lif, ctx.cmd.cmd.opcode, + ctx.comp.comp.status, err); + switch (le16_to_cpu(ctx.cmd.rx_filter_add.match)) { + case IONIC_RX_FILTER_MATCH_VLAN: + netdev_info(lif->netdev, "rx_filter add failed: VLAN %d\n", + ctx.cmd.rx_filter_add.vlan.vlan); + break; + case IONIC_RX_FILTER_MATCH_MAC: + netdev_info(lif->netdev, "rx_filter add failed: ADDR %pM\n", + ctx.cmd.rx_filter_add.mac.addr); + break; + } + + return err; + } + + switch (le16_to_cpu(ctx.cmd.rx_filter_add.match)) { + case IONIC_RX_FILTER_MATCH_VLAN: + lif->nvlans++; + break; + case IONIC_RX_FILTER_MATCH_MAC: + if (is_multicast_ether_addr(ctx.cmd.rx_filter_add.mac.addr)) + lif->nmcast++; + else + lif->nucast++; + break; + } + + f = ionic_rx_filter_find(lif, &ctx.cmd.rx_filter_add); + if (f && f->state == IONIC_FILTER_STATE_OLD) { + /* Someone requested a delete while we were adding + * so update the filter info with the results from the add + * and the data will be there for the delete on the next + * sync cycle. + */ + err = ionic_rx_filter_save(lif, 0, IONIC_RXQ_INDEX_ANY, 0, &ctx, + IONIC_FILTER_STATE_OLD); + } else { + err = ionic_rx_filter_save(lif, 0, IONIC_RXQ_INDEX_ANY, 0, &ctx, + IONIC_FILTER_STATE_SYNCED); + } + + spin_unlock_bh(&lif->rx_filters.lock); + + return err; +} + +int ionic_lif_addr_add(struct ionic_lif *lif, const u8 *addr) +{ + struct ionic_rx_filter_add_cmd ac = { + .match = cpu_to_le16(IONIC_RX_FILTER_MATCH_MAC), + }; + + memcpy(&ac.mac.addr, addr, ETH_ALEN); + + return ionic_lif_filter_add(lif, &ac); +} + +int ionic_lif_vlan_add(struct ionic_lif *lif, const u16 vid) +{ + struct ionic_rx_filter_add_cmd ac = { + .match = cpu_to_le16(IONIC_RX_FILTER_MATCH_VLAN), + .vlan.vlan = cpu_to_le16(vid), + }; + + return ionic_lif_filter_add(lif, &ac); +} + +static int ionic_lif_filter_del(struct ionic_lif *lif, + struct ionic_rx_filter_add_cmd *ac) +{ + struct ionic_admin_ctx ctx = { + .work = COMPLETION_INITIALIZER_ONSTACK(ctx.work), + .cmd.rx_filter_del = { + .opcode = IONIC_CMD_RX_FILTER_DEL, + .lif_index = cpu_to_le16(lif->index), + }, + }; + struct ionic_rx_filter *f; + int state; + int err; + + spin_lock_bh(&lif->rx_filters.lock); + f = ionic_rx_filter_find(lif, ac); + if (!f) { + spin_unlock_bh(&lif->rx_filters.lock); + return -ENOENT; + } + + switch (le16_to_cpu(ac->match)) { + case IONIC_RX_FILTER_MATCH_VLAN: + netdev_dbg(lif->netdev, "%s: rx_filter del VLAN %d id %d\n", + __func__, ac->vlan.vlan, f->filter_id); + lif->nvlans--; + break; + case IONIC_RX_FILTER_MATCH_MAC: + netdev_dbg(lif->netdev, "%s: rx_filter del ADDR %pM id %d\n", + __func__, ac->mac.addr, f->filter_id); + if (is_multicast_ether_addr(ac->mac.addr) && lif->nmcast) + lif->nmcast--; + else if (!is_multicast_ether_addr(ac->mac.addr) && lif->nucast) + lif->nucast--; + break; + } + + state = f->state; + ctx.cmd.rx_filter_del.filter_id = cpu_to_le32(f->filter_id); + ionic_rx_filter_free(lif, f); + + spin_unlock_bh(&lif->rx_filters.lock); + + if (state != IONIC_FILTER_STATE_NEW) { + err = ionic_adminq_post_wait_nomsg(lif, &ctx); + + switch (err) { + /* ignore these errors */ + case -EEXIST: + case -ENXIO: + case -ETIMEDOUT: + case -EAGAIN: + case -EBUSY: + case 0: + break; + default: + ionic_adminq_netdev_err_print(lif, ctx.cmd.cmd.opcode, + ctx.comp.comp.status, err); + return err; + } + } + + return 0; +} + +int ionic_lif_addr_del(struct ionic_lif *lif, const u8 *addr) +{ + struct ionic_rx_filter_add_cmd ac = { + .match = cpu_to_le16(IONIC_RX_FILTER_MATCH_MAC), + }; + + memcpy(&ac.mac.addr, addr, ETH_ALEN); + + return ionic_lif_filter_del(lif, &ac); +} + +int ionic_lif_vlan_del(struct ionic_lif *lif, const u16 vid) +{ + struct ionic_rx_filter_add_cmd ac = { + .match = cpu_to_le16(IONIC_RX_FILTER_MATCH_VLAN), + .vlan.vlan = cpu_to_le16(vid), + }; + + return ionic_lif_filter_del(lif, &ac); +} + +struct sync_item { + struct list_head list; + struct ionic_rx_filter f; +}; + +void ionic_rx_filter_sync(struct ionic_lif *lif) +{ + struct device *dev = lif->ionic->dev; + struct list_head sync_add_list; + struct list_head sync_del_list; + struct sync_item *sync_item; + struct ionic_rx_filter *f; + struct hlist_head *head; + struct hlist_node *tmp; + struct sync_item *spos; + unsigned int i; + + INIT_LIST_HEAD(&sync_add_list); + INIT_LIST_HEAD(&sync_del_list); + + clear_bit(IONIC_LIF_F_FILTER_SYNC_NEEDED, lif->state); + + /* Copy the filters to be added and deleted + * into a separate local list that needs no locking. + */ + spin_lock_bh(&lif->rx_filters.lock); + for (i = 0; i < IONIC_RX_FILTER_HLISTS; i++) { + head = &lif->rx_filters.by_id[i]; + hlist_for_each_entry_safe(f, tmp, head, by_id) { + if (f->state == IONIC_FILTER_STATE_NEW || + f->state == IONIC_FILTER_STATE_OLD) { + sync_item = devm_kzalloc(dev, sizeof(*sync_item), + GFP_ATOMIC); + if (!sync_item) + goto loop_out; + + sync_item->f = *f; + + if (f->state == IONIC_FILTER_STATE_NEW) + list_add(&sync_item->list, &sync_add_list); + else + list_add(&sync_item->list, &sync_del_list); + } + } + } +loop_out: + spin_unlock_bh(&lif->rx_filters.lock); + + /* If the add or delete fails, it won't get marked as sync'd + * and will be tried again in the next sync action. + * Do the deletes first in case we're in an overflow state and + * they can clear room for some new filters + */ + list_for_each_entry_safe(sync_item, spos, &sync_del_list, list) { + (void)ionic_lif_filter_del(lif, &sync_item->f.cmd); + + list_del(&sync_item->list); + devm_kfree(dev, sync_item); + } + + list_for_each_entry_safe(sync_item, spos, &sync_add_list, list) { + (void)ionic_lif_filter_add(lif, &sync_item->f.cmd); + + list_del(&sync_item->list); + devm_kfree(dev, sync_item); + } +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h new file mode 100644 index 000000000..87b2666f2 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_RX_FILTER_H_ +#define _IONIC_RX_FILTER_H_ + +#define IONIC_RXQ_INDEX_ANY (0xFFFF) + +enum ionic_filter_state { + IONIC_FILTER_STATE_SYNCED, + IONIC_FILTER_STATE_NEW, + IONIC_FILTER_STATE_OLD, +}; + +struct ionic_rx_filter { + u32 flow_id; + u32 filter_id; + u16 rxq_index; + enum ionic_filter_state state; + struct ionic_rx_filter_add_cmd cmd; + struct hlist_node by_hash; + struct hlist_node by_id; +}; + +#define IONIC_RX_FILTER_HASH_BITS 10 +#define IONIC_RX_FILTER_HLISTS BIT(IONIC_RX_FILTER_HASH_BITS) +#define IONIC_RX_FILTER_HLISTS_MASK (IONIC_RX_FILTER_HLISTS - 1) +struct ionic_rx_filters { + spinlock_t lock; /* filter list lock */ + struct hlist_head by_hash[IONIC_RX_FILTER_HLISTS]; /* by skb hash */ + struct hlist_head by_id[IONIC_RX_FILTER_HLISTS]; /* by filter_id */ +}; + +void ionic_rx_filter_free(struct ionic_lif *lif, struct ionic_rx_filter *f); +void ionic_rx_filter_replay(struct ionic_lif *lif); +int ionic_rx_filters_init(struct ionic_lif *lif); +void ionic_rx_filters_deinit(struct ionic_lif *lif); +int ionic_rx_filter_save(struct ionic_lif *lif, u32 flow_id, u16 rxq_index, + u32 hash, struct ionic_admin_ctx *ctx, + enum ionic_filter_state state); +struct ionic_rx_filter *ionic_rx_filter_by_vlan(struct ionic_lif *lif, u16 vid); +struct ionic_rx_filter *ionic_rx_filter_by_addr(struct ionic_lif *lif, const u8 *addr); +struct ionic_rx_filter *ionic_rx_filter_rxsteer(struct ionic_lif *lif); +void ionic_rx_filter_sync(struct ionic_lif *lif); +int ionic_lif_list_addr(struct ionic_lif *lif, const u8 *addr, bool mode); +int ionic_rx_filters_need_sync(struct ionic_lif *lif); +int ionic_lif_vlan_add(struct ionic_lif *lif, const u16 vid); +int ionic_lif_vlan_del(struct ionic_lif *lif, const u16 vid); + +#endif /* _IONIC_RX_FILTER_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_stats.c b/drivers/net/ethernet/pensando/ionic/ionic_stats.c new file mode 100644 index 000000000..9859a4432 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_stats.c @@ -0,0 +1,350 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/ethtool.h> +#include <linux/kernel.h> +#include <linux/mutex.h> +#include <linux/netdevice.h> + +#include "ionic.h" +#include "ionic_lif.h" +#include "ionic_stats.h" + +static const struct ionic_stat_desc ionic_lif_stats_desc[] = { + IONIC_LIF_STAT_DESC(tx_packets), + IONIC_LIF_STAT_DESC(tx_bytes), + IONIC_LIF_STAT_DESC(rx_packets), + IONIC_LIF_STAT_DESC(rx_bytes), + IONIC_LIF_STAT_DESC(tx_tso), + IONIC_LIF_STAT_DESC(tx_tso_bytes), + IONIC_LIF_STAT_DESC(tx_csum_none), + IONIC_LIF_STAT_DESC(tx_csum), + IONIC_LIF_STAT_DESC(rx_csum_none), + IONIC_LIF_STAT_DESC(rx_csum_complete), + IONIC_LIF_STAT_DESC(rx_csum_error), + IONIC_LIF_STAT_DESC(hw_tx_dropped), + IONIC_LIF_STAT_DESC(hw_rx_dropped), + IONIC_LIF_STAT_DESC(hw_rx_over_errors), + IONIC_LIF_STAT_DESC(hw_rx_missed_errors), + IONIC_LIF_STAT_DESC(hw_tx_aborted_errors), +}; + +static const struct ionic_stat_desc ionic_port_stats_desc[] = { + IONIC_PORT_STAT_DESC(frames_rx_ok), + IONIC_PORT_STAT_DESC(frames_rx_all), + IONIC_PORT_STAT_DESC(frames_rx_bad_fcs), + IONIC_PORT_STAT_DESC(frames_rx_bad_all), + IONIC_PORT_STAT_DESC(octets_rx_ok), + IONIC_PORT_STAT_DESC(octets_rx_all), + IONIC_PORT_STAT_DESC(frames_rx_unicast), + IONIC_PORT_STAT_DESC(frames_rx_multicast), + IONIC_PORT_STAT_DESC(frames_rx_broadcast), + IONIC_PORT_STAT_DESC(frames_rx_pause), + IONIC_PORT_STAT_DESC(frames_rx_bad_length), + IONIC_PORT_STAT_DESC(frames_rx_undersized), + IONIC_PORT_STAT_DESC(frames_rx_oversized), + IONIC_PORT_STAT_DESC(frames_rx_fragments), + IONIC_PORT_STAT_DESC(frames_rx_jabber), + IONIC_PORT_STAT_DESC(frames_rx_pripause), + IONIC_PORT_STAT_DESC(frames_rx_stomped_crc), + IONIC_PORT_STAT_DESC(frames_rx_too_long), + IONIC_PORT_STAT_DESC(frames_rx_vlan_good), + IONIC_PORT_STAT_DESC(frames_rx_dropped), + IONIC_PORT_STAT_DESC(frames_rx_less_than_64b), + IONIC_PORT_STAT_DESC(frames_rx_64b), + IONIC_PORT_STAT_DESC(frames_rx_65b_127b), + IONIC_PORT_STAT_DESC(frames_rx_128b_255b), + IONIC_PORT_STAT_DESC(frames_rx_256b_511b), + IONIC_PORT_STAT_DESC(frames_rx_512b_1023b), + IONIC_PORT_STAT_DESC(frames_rx_1024b_1518b), + IONIC_PORT_STAT_DESC(frames_rx_1519b_2047b), + IONIC_PORT_STAT_DESC(frames_rx_2048b_4095b), + IONIC_PORT_STAT_DESC(frames_rx_4096b_8191b), + IONIC_PORT_STAT_DESC(frames_rx_8192b_9215b), + IONIC_PORT_STAT_DESC(frames_rx_other), + IONIC_PORT_STAT_DESC(frames_tx_ok), + IONIC_PORT_STAT_DESC(frames_tx_all), + IONIC_PORT_STAT_DESC(frames_tx_bad), + IONIC_PORT_STAT_DESC(octets_tx_ok), + IONIC_PORT_STAT_DESC(octets_tx_total), + IONIC_PORT_STAT_DESC(frames_tx_unicast), + IONIC_PORT_STAT_DESC(frames_tx_multicast), + IONIC_PORT_STAT_DESC(frames_tx_broadcast), + IONIC_PORT_STAT_DESC(frames_tx_pause), + IONIC_PORT_STAT_DESC(frames_tx_pripause), + IONIC_PORT_STAT_DESC(frames_tx_vlan), + IONIC_PORT_STAT_DESC(frames_tx_less_than_64b), + IONIC_PORT_STAT_DESC(frames_tx_64b), + IONIC_PORT_STAT_DESC(frames_tx_65b_127b), + IONIC_PORT_STAT_DESC(frames_tx_128b_255b), + IONIC_PORT_STAT_DESC(frames_tx_256b_511b), + IONIC_PORT_STAT_DESC(frames_tx_512b_1023b), + IONIC_PORT_STAT_DESC(frames_tx_1024b_1518b), + IONIC_PORT_STAT_DESC(frames_tx_1519b_2047b), + IONIC_PORT_STAT_DESC(frames_tx_2048b_4095b), + IONIC_PORT_STAT_DESC(frames_tx_4096b_8191b), + IONIC_PORT_STAT_DESC(frames_tx_8192b_9215b), + IONIC_PORT_STAT_DESC(frames_tx_other), + IONIC_PORT_STAT_DESC(frames_tx_pri_0), + IONIC_PORT_STAT_DESC(frames_tx_pri_1), + IONIC_PORT_STAT_DESC(frames_tx_pri_2), + IONIC_PORT_STAT_DESC(frames_tx_pri_3), + IONIC_PORT_STAT_DESC(frames_tx_pri_4), + IONIC_PORT_STAT_DESC(frames_tx_pri_5), + IONIC_PORT_STAT_DESC(frames_tx_pri_6), + IONIC_PORT_STAT_DESC(frames_tx_pri_7), + IONIC_PORT_STAT_DESC(frames_rx_pri_0), + IONIC_PORT_STAT_DESC(frames_rx_pri_1), + IONIC_PORT_STAT_DESC(frames_rx_pri_2), + IONIC_PORT_STAT_DESC(frames_rx_pri_3), + IONIC_PORT_STAT_DESC(frames_rx_pri_4), + IONIC_PORT_STAT_DESC(frames_rx_pri_5), + IONIC_PORT_STAT_DESC(frames_rx_pri_6), + IONIC_PORT_STAT_DESC(frames_rx_pri_7), + IONIC_PORT_STAT_DESC(tx_pripause_0_1us_count), + IONIC_PORT_STAT_DESC(tx_pripause_1_1us_count), + IONIC_PORT_STAT_DESC(tx_pripause_2_1us_count), + IONIC_PORT_STAT_DESC(tx_pripause_3_1us_count), + IONIC_PORT_STAT_DESC(tx_pripause_4_1us_count), + IONIC_PORT_STAT_DESC(tx_pripause_5_1us_count), + IONIC_PORT_STAT_DESC(tx_pripause_6_1us_count), + IONIC_PORT_STAT_DESC(tx_pripause_7_1us_count), + IONIC_PORT_STAT_DESC(rx_pripause_0_1us_count), + IONIC_PORT_STAT_DESC(rx_pripause_1_1us_count), + IONIC_PORT_STAT_DESC(rx_pripause_2_1us_count), + IONIC_PORT_STAT_DESC(rx_pripause_3_1us_count), + IONIC_PORT_STAT_DESC(rx_pripause_4_1us_count), + IONIC_PORT_STAT_DESC(rx_pripause_5_1us_count), + IONIC_PORT_STAT_DESC(rx_pripause_6_1us_count), + IONIC_PORT_STAT_DESC(rx_pripause_7_1us_count), + IONIC_PORT_STAT_DESC(rx_pause_1us_count), + IONIC_PORT_STAT_DESC(frames_tx_truncated), +}; + +static const struct ionic_stat_desc ionic_tx_stats_desc[] = { + IONIC_TX_STAT_DESC(pkts), + IONIC_TX_STAT_DESC(bytes), + IONIC_TX_STAT_DESC(clean), + IONIC_TX_STAT_DESC(dma_map_err), + IONIC_TX_STAT_DESC(linearize), + IONIC_TX_STAT_DESC(frags), + IONIC_TX_STAT_DESC(tso), + IONIC_TX_STAT_DESC(tso_bytes), + IONIC_TX_STAT_DESC(hwstamp_valid), + IONIC_TX_STAT_DESC(hwstamp_invalid), + IONIC_TX_STAT_DESC(csum_none), + IONIC_TX_STAT_DESC(csum), + IONIC_TX_STAT_DESC(vlan_inserted), +}; + +static const struct ionic_stat_desc ionic_rx_stats_desc[] = { + IONIC_RX_STAT_DESC(pkts), + IONIC_RX_STAT_DESC(bytes), + IONIC_RX_STAT_DESC(dma_map_err), + IONIC_RX_STAT_DESC(alloc_err), + IONIC_RX_STAT_DESC(csum_none), + IONIC_RX_STAT_DESC(csum_complete), + IONIC_RX_STAT_DESC(csum_error), + IONIC_RX_STAT_DESC(hwstamp_valid), + IONIC_RX_STAT_DESC(hwstamp_invalid), + IONIC_RX_STAT_DESC(dropped), + IONIC_RX_STAT_DESC(vlan_stripped), +}; + +#define IONIC_NUM_LIF_STATS ARRAY_SIZE(ionic_lif_stats_desc) +#define IONIC_NUM_PORT_STATS ARRAY_SIZE(ionic_port_stats_desc) +#define IONIC_NUM_TX_STATS ARRAY_SIZE(ionic_tx_stats_desc) +#define IONIC_NUM_RX_STATS ARRAY_SIZE(ionic_rx_stats_desc) + +#define MAX_Q(lif) ((lif)->netdev->real_num_tx_queues) + +static void ionic_add_lif_txq_stats(struct ionic_lif *lif, int q_num, + struct ionic_lif_sw_stats *stats) +{ + struct ionic_tx_stats *txstats = &lif->txqstats[q_num]; + + stats->tx_packets += txstats->pkts; + stats->tx_bytes += txstats->bytes; + stats->tx_tso += txstats->tso; + stats->tx_tso_bytes += txstats->tso_bytes; + stats->tx_csum_none += txstats->csum_none; + stats->tx_csum += txstats->csum; + stats->tx_hwstamp_valid += txstats->hwstamp_valid; + stats->tx_hwstamp_invalid += txstats->hwstamp_invalid; +} + +static void ionic_add_lif_rxq_stats(struct ionic_lif *lif, int q_num, + struct ionic_lif_sw_stats *stats) +{ + struct ionic_rx_stats *rxstats = &lif->rxqstats[q_num]; + + stats->rx_packets += rxstats->pkts; + stats->rx_bytes += rxstats->bytes; + stats->rx_csum_none += rxstats->csum_none; + stats->rx_csum_complete += rxstats->csum_complete; + stats->rx_csum_error += rxstats->csum_error; + stats->rx_hwstamp_valid += rxstats->hwstamp_valid; + stats->rx_hwstamp_invalid += rxstats->hwstamp_invalid; +} + +static void ionic_get_lif_stats(struct ionic_lif *lif, + struct ionic_lif_sw_stats *stats) +{ + struct rtnl_link_stats64 ns; + int q_num; + + memset(stats, 0, sizeof(*stats)); + + for (q_num = 0; q_num < MAX_Q(lif); q_num++) { + ionic_add_lif_txq_stats(lif, q_num, stats); + ionic_add_lif_rxq_stats(lif, q_num, stats); + } + + if (lif->hwstamp_txq) + ionic_add_lif_txq_stats(lif, lif->hwstamp_txq->q.index, stats); + + if (lif->hwstamp_rxq) + ionic_add_lif_rxq_stats(lif, lif->hwstamp_rxq->q.index, stats); + + ionic_get_stats64(lif->netdev, &ns); + stats->hw_tx_dropped = ns.tx_dropped; + stats->hw_rx_dropped = ns.rx_dropped; + stats->hw_rx_over_errors = ns.rx_over_errors; + stats->hw_rx_missed_errors = ns.rx_missed_errors; + stats->hw_tx_aborted_errors = ns.tx_aborted_errors; +} + +static u64 ionic_sw_stats_get_count(struct ionic_lif *lif) +{ + u64 total = 0, tx_queues = MAX_Q(lif), rx_queues = MAX_Q(lif); + + if (lif->hwstamp_txq) + tx_queues += 1; + + if (lif->hwstamp_rxq) + rx_queues += 1; + + total += IONIC_NUM_LIF_STATS; + total += IONIC_NUM_PORT_STATS; + + total += tx_queues * IONIC_NUM_TX_STATS; + total += rx_queues * IONIC_NUM_RX_STATS; + + return total; +} + +static void ionic_sw_stats_get_tx_strings(struct ionic_lif *lif, u8 **buf, + int q_num) +{ + int i; + + for (i = 0; i < IONIC_NUM_TX_STATS; i++) + ethtool_sprintf(buf, "tx_%d_%s", q_num, + ionic_tx_stats_desc[i].name); +} + +static void ionic_sw_stats_get_rx_strings(struct ionic_lif *lif, u8 **buf, + int q_num) +{ + int i; + + for (i = 0; i < IONIC_NUM_RX_STATS; i++) + ethtool_sprintf(buf, "rx_%d_%s", q_num, + ionic_rx_stats_desc[i].name); +} + +static void ionic_sw_stats_get_strings(struct ionic_lif *lif, u8 **buf) +{ + int i, q_num; + + for (i = 0; i < IONIC_NUM_LIF_STATS; i++) + ethtool_sprintf(buf, ionic_lif_stats_desc[i].name); + + for (i = 0; i < IONIC_NUM_PORT_STATS; i++) + ethtool_sprintf(buf, ionic_port_stats_desc[i].name); + + for (q_num = 0; q_num < MAX_Q(lif); q_num++) + ionic_sw_stats_get_tx_strings(lif, buf, q_num); + + if (lif->hwstamp_txq) + ionic_sw_stats_get_tx_strings(lif, buf, lif->hwstamp_txq->q.index); + + for (q_num = 0; q_num < MAX_Q(lif); q_num++) + ionic_sw_stats_get_rx_strings(lif, buf, q_num); + + if (lif->hwstamp_rxq) + ionic_sw_stats_get_rx_strings(lif, buf, lif->hwstamp_rxq->q.index); +} + +static void ionic_sw_stats_get_txq_values(struct ionic_lif *lif, u64 **buf, + int q_num) +{ + struct ionic_tx_stats *txstats; + int i; + + txstats = &lif->txqstats[q_num]; + + for (i = 0; i < IONIC_NUM_TX_STATS; i++) { + **buf = IONIC_READ_STAT64(txstats, &ionic_tx_stats_desc[i]); + (*buf)++; + } +} + +static void ionic_sw_stats_get_rxq_values(struct ionic_lif *lif, u64 **buf, + int q_num) +{ + struct ionic_rx_stats *rxstats; + int i; + + rxstats = &lif->rxqstats[q_num]; + + for (i = 0; i < IONIC_NUM_RX_STATS; i++) { + **buf = IONIC_READ_STAT64(rxstats, &ionic_rx_stats_desc[i]); + (*buf)++; + } +} + +static void ionic_sw_stats_get_values(struct ionic_lif *lif, u64 **buf) +{ + struct ionic_port_stats *port_stats; + struct ionic_lif_sw_stats lif_stats; + int i, q_num; + + ionic_get_lif_stats(lif, &lif_stats); + + for (i = 0; i < IONIC_NUM_LIF_STATS; i++) { + **buf = IONIC_READ_STAT64(&lif_stats, &ionic_lif_stats_desc[i]); + (*buf)++; + } + + port_stats = &lif->ionic->idev.port_info->stats; + for (i = 0; i < IONIC_NUM_PORT_STATS; i++) { + **buf = IONIC_READ_STAT_LE64(port_stats, + &ionic_port_stats_desc[i]); + (*buf)++; + } + + for (q_num = 0; q_num < MAX_Q(lif); q_num++) + ionic_sw_stats_get_txq_values(lif, buf, q_num); + + if (lif->hwstamp_txq) + ionic_sw_stats_get_txq_values(lif, buf, lif->hwstamp_txq->q.index); + + for (q_num = 0; q_num < MAX_Q(lif); q_num++) + ionic_sw_stats_get_rxq_values(lif, buf, q_num); + + if (lif->hwstamp_rxq) + ionic_sw_stats_get_rxq_values(lif, buf, lif->hwstamp_rxq->q.index); +} + +const struct ionic_stats_group_intf ionic_stats_groups[] = { + /* SW Stats group */ + { + .get_strings = ionic_sw_stats_get_strings, + .get_values = ionic_sw_stats_get_values, + .get_count = ionic_sw_stats_get_count, + }, + /* Add more stat groups here */ +}; + +const int ionic_num_stats_grps = ARRAY_SIZE(ionic_stats_groups); diff --git a/drivers/net/ethernet/pensando/ionic/ionic_stats.h b/drivers/net/ethernet/pensando/ionic/ionic_stats.h new file mode 100644 index 000000000..2a725834f --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_stats.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_STATS_H_ +#define _IONIC_STATS_H_ + +#define IONIC_STAT_TO_OFFSET(type, stat_name) (offsetof(type, stat_name)) + +#define IONIC_STAT_DESC(type, stat_name) { \ + .name = #stat_name, \ + .offset = IONIC_STAT_TO_OFFSET(type, stat_name) \ +} + +#define IONIC_PORT_STAT_DESC(stat_name) \ + IONIC_STAT_DESC(struct ionic_port_stats, stat_name) + +#define IONIC_LIF_STAT_DESC(stat_name) \ + IONIC_STAT_DESC(struct ionic_lif_sw_stats, stat_name) + +#define IONIC_TX_STAT_DESC(stat_name) \ + IONIC_STAT_DESC(struct ionic_tx_stats, stat_name) + +#define IONIC_RX_STAT_DESC(stat_name) \ + IONIC_STAT_DESC(struct ionic_rx_stats, stat_name) + +#define IONIC_TX_Q_STAT_DESC(stat_name) \ + IONIC_STAT_DESC(struct ionic_queue, stat_name) + +#define IONIC_CQ_STAT_DESC(stat_name) \ + IONIC_STAT_DESC(struct ionic_cq, stat_name) + +#define IONIC_INTR_STAT_DESC(stat_name) \ + IONIC_STAT_DESC(struct ionic_intr_info, stat_name) + +#define IONIC_NAPI_STAT_DESC(stat_name) \ + IONIC_STAT_DESC(struct ionic_napi_stats, stat_name) + +/* Interface structure for a particalar stats group */ +struct ionic_stats_group_intf { + void (*get_strings)(struct ionic_lif *lif, u8 **buf); + void (*get_values)(struct ionic_lif *lif, u64 **buf); + u64 (*get_count)(struct ionic_lif *lif); +}; + +extern const struct ionic_stats_group_intf ionic_stats_groups[]; +extern const int ionic_num_stats_grps; + +#define IONIC_READ_STAT64(base_ptr, desc_ptr) \ + (*((u64 *)(((u8 *)(base_ptr)) + (desc_ptr)->offset))) + +#define IONIC_READ_STAT_LE64(base_ptr, desc_ptr) \ + __le64_to_cpu(*((__le64 *)(((u8 *)(base_ptr)) + (desc_ptr)->offset))) + +struct ionic_stat_desc { + char name[ETH_GSTRING_LEN]; + u64 offset; +}; + +#endif /* _IONIC_STATS_H_ */ diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c new file mode 100644 index 000000000..4684b9f19 --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c @@ -0,0 +1,1350 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#include <linux/ip.h> +#include <linux/ipv6.h> +#include <linux/if_vlan.h> +#include <net/ip6_checksum.h> + +#include "ionic.h" +#include "ionic_lif.h" +#include "ionic_txrx.h" + +static inline void ionic_txq_post(struct ionic_queue *q, bool ring_dbell, + ionic_desc_cb cb_func, void *cb_arg) +{ + ionic_q_post(q, ring_dbell, cb_func, cb_arg); +} + +static inline void ionic_rxq_post(struct ionic_queue *q, bool ring_dbell, + ionic_desc_cb cb_func, void *cb_arg) +{ + ionic_q_post(q, ring_dbell, cb_func, cb_arg); +} + +bool ionic_txq_poke_doorbell(struct ionic_queue *q) +{ + unsigned long now, then, dif; + struct netdev_queue *netdev_txq; + struct net_device *netdev; + + netdev = q->lif->netdev; + netdev_txq = netdev_get_tx_queue(netdev, q->index); + + HARD_TX_LOCK(netdev, netdev_txq, smp_processor_id()); + + if (q->tail_idx == q->head_idx) { + HARD_TX_UNLOCK(netdev, netdev_txq); + return false; + } + + now = READ_ONCE(jiffies); + then = q->dbell_jiffies; + dif = now - then; + + if (dif > q->dbell_deadline) { + ionic_dbell_ring(q->lif->kern_dbpage, q->hw_type, + q->dbval | q->head_idx); + + q->dbell_jiffies = now; + } + + HARD_TX_UNLOCK(netdev, netdev_txq); + + return true; +} + +bool ionic_rxq_poke_doorbell(struct ionic_queue *q) +{ + unsigned long now, then, dif; + + /* no lock, called from rx napi or txrx napi, nothing else can fill */ + + if (q->tail_idx == q->head_idx) + return false; + + now = READ_ONCE(jiffies); + then = q->dbell_jiffies; + dif = now - then; + + if (dif > q->dbell_deadline) { + ionic_dbell_ring(q->lif->kern_dbpage, q->hw_type, + q->dbval | q->head_idx); + + q->dbell_jiffies = now; + + dif = 2 * q->dbell_deadline; + if (dif > IONIC_RX_MAX_DOORBELL_DEADLINE) + dif = IONIC_RX_MAX_DOORBELL_DEADLINE; + + q->dbell_deadline = dif; + } + + return true; +} + +static inline struct netdev_queue *q_to_ndq(struct ionic_queue *q) +{ + return netdev_get_tx_queue(q->lif->netdev, q->index); +} + +static int ionic_rx_page_alloc(struct ionic_queue *q, + struct ionic_buf_info *buf_info) +{ + struct net_device *netdev = q->lif->netdev; + struct ionic_rx_stats *stats; + struct device *dev; + struct page *page; + + dev = q->dev; + stats = q_to_rx_stats(q); + + if (unlikely(!buf_info)) { + net_err_ratelimited("%s: %s invalid buf_info in alloc\n", + netdev->name, q->name); + return -EINVAL; + } + + page = alloc_pages(IONIC_PAGE_GFP_MASK, 0); + if (unlikely(!page)) { + net_err_ratelimited("%s: %s page alloc failed\n", + netdev->name, q->name); + stats->alloc_err++; + return -ENOMEM; + } + + buf_info->dma_addr = dma_map_page(dev, page, 0, + IONIC_PAGE_SIZE, DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(dev, buf_info->dma_addr))) { + __free_pages(page, 0); + net_err_ratelimited("%s: %s dma map failed\n", + netdev->name, q->name); + stats->dma_map_err++; + return -EIO; + } + + buf_info->page = page; + buf_info->page_offset = 0; + + return 0; +} + +static void ionic_rx_page_free(struct ionic_queue *q, + struct ionic_buf_info *buf_info) +{ + struct net_device *netdev = q->lif->netdev; + struct device *dev = q->dev; + + if (unlikely(!buf_info)) { + net_err_ratelimited("%s: %s invalid buf_info in free\n", + netdev->name, q->name); + return; + } + + if (!buf_info->page) + return; + + dma_unmap_page(dev, buf_info->dma_addr, IONIC_PAGE_SIZE, DMA_FROM_DEVICE); + __free_pages(buf_info->page, 0); + buf_info->page = NULL; +} + +static bool ionic_rx_buf_recycle(struct ionic_queue *q, + struct ionic_buf_info *buf_info, u32 used) +{ + u32 size; + + /* don't re-use pages allocated in low-mem condition */ + if (page_is_pfmemalloc(buf_info->page)) + return false; + + /* don't re-use buffers from non-local numa nodes */ + if (page_to_nid(buf_info->page) != numa_mem_id()) + return false; + + size = ALIGN(used, IONIC_PAGE_SPLIT_SZ); + buf_info->page_offset += size; + if (buf_info->page_offset >= IONIC_PAGE_SIZE) + return false; + + get_page(buf_info->page); + + return true; +} + +static struct sk_buff *ionic_rx_frags(struct ionic_queue *q, + struct ionic_desc_info *desc_info, + struct ionic_rxq_comp *comp) +{ + struct net_device *netdev = q->lif->netdev; + struct ionic_buf_info *buf_info; + struct ionic_rx_stats *stats; + struct device *dev = q->dev; + struct sk_buff *skb; + unsigned int i; + u16 frag_len; + u16 len; + + stats = q_to_rx_stats(q); + + buf_info = &desc_info->bufs[0]; + len = le16_to_cpu(comp->len); + + prefetchw(buf_info->page); + + skb = napi_get_frags(&q_to_qcq(q)->napi); + if (unlikely(!skb)) { + net_warn_ratelimited("%s: SKB alloc failed on %s!\n", + netdev->name, q->name); + stats->alloc_err++; + return NULL; + } + + i = comp->num_sg_elems + 1; + do { + if (unlikely(!buf_info->page)) { + dev_kfree_skb(skb); + return NULL; + } + + frag_len = min_t(u16, len, min_t(u32, IONIC_MAX_BUF_LEN, + IONIC_PAGE_SIZE - buf_info->page_offset)); + len -= frag_len; + + dma_sync_single_for_cpu(dev, + buf_info->dma_addr + buf_info->page_offset, + frag_len, DMA_FROM_DEVICE); + + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, + buf_info->page, buf_info->page_offset, frag_len, + IONIC_PAGE_SIZE); + + if (!ionic_rx_buf_recycle(q, buf_info, frag_len)) { + dma_unmap_page(dev, buf_info->dma_addr, + IONIC_PAGE_SIZE, DMA_FROM_DEVICE); + buf_info->page = NULL; + } + + buf_info++; + + i--; + } while (i > 0); + + return skb; +} + +static struct sk_buff *ionic_rx_copybreak(struct ionic_queue *q, + struct ionic_desc_info *desc_info, + struct ionic_rxq_comp *comp) +{ + struct net_device *netdev = q->lif->netdev; + struct ionic_buf_info *buf_info; + struct ionic_rx_stats *stats; + struct device *dev = q->dev; + struct sk_buff *skb; + u16 len; + + stats = q_to_rx_stats(q); + + buf_info = &desc_info->bufs[0]; + len = le16_to_cpu(comp->len); + + skb = napi_alloc_skb(&q_to_qcq(q)->napi, len); + if (unlikely(!skb)) { + net_warn_ratelimited("%s: SKB alloc failed on %s!\n", + netdev->name, q->name); + stats->alloc_err++; + return NULL; + } + + if (unlikely(!buf_info->page)) { + dev_kfree_skb(skb); + return NULL; + } + + dma_sync_single_for_cpu(dev, buf_info->dma_addr + buf_info->page_offset, + len, DMA_FROM_DEVICE); + skb_copy_to_linear_data(skb, page_address(buf_info->page) + buf_info->page_offset, len); + dma_sync_single_for_device(dev, buf_info->dma_addr + buf_info->page_offset, + len, DMA_FROM_DEVICE); + + skb_put(skb, len); + skb->protocol = eth_type_trans(skb, q->lif->netdev); + + return skb; +} + +static void ionic_rx_clean(struct ionic_queue *q, + struct ionic_desc_info *desc_info, + struct ionic_cq_info *cq_info, + void *cb_arg) +{ + struct net_device *netdev = q->lif->netdev; + struct ionic_qcq *qcq = q_to_qcq(q); + struct ionic_rx_stats *stats; + struct ionic_rxq_comp *comp; + struct sk_buff *skb; + + comp = cq_info->cq_desc + qcq->cq.desc_size - sizeof(*comp); + + stats = q_to_rx_stats(q); + + if (comp->status) { + stats->dropped++; + return; + } + + stats->pkts++; + stats->bytes += le16_to_cpu(comp->len); + + if (le16_to_cpu(comp->len) <= q->lif->rx_copybreak) + skb = ionic_rx_copybreak(q, desc_info, comp); + else + skb = ionic_rx_frags(q, desc_info, comp); + + if (unlikely(!skb)) { + stats->dropped++; + return; + } + + skb_record_rx_queue(skb, q->index); + + if (likely(netdev->features & NETIF_F_RXHASH)) { + switch (comp->pkt_type_color & IONIC_RXQ_COMP_PKT_TYPE_MASK) { + case IONIC_PKT_TYPE_IPV4: + case IONIC_PKT_TYPE_IPV6: + skb_set_hash(skb, le32_to_cpu(comp->rss_hash), + PKT_HASH_TYPE_L3); + break; + case IONIC_PKT_TYPE_IPV4_TCP: + case IONIC_PKT_TYPE_IPV6_TCP: + case IONIC_PKT_TYPE_IPV4_UDP: + case IONIC_PKT_TYPE_IPV6_UDP: + skb_set_hash(skb, le32_to_cpu(comp->rss_hash), + PKT_HASH_TYPE_L4); + break; + } + } + + if (likely(netdev->features & NETIF_F_RXCSUM) && + (comp->csum_flags & IONIC_RXQ_COMP_CSUM_F_CALC)) { + skb->ip_summed = CHECKSUM_COMPLETE; + skb->csum = (__force __wsum)le16_to_cpu(comp->csum); + stats->csum_complete++; + } else { + stats->csum_none++; + } + + if (unlikely((comp->csum_flags & IONIC_RXQ_COMP_CSUM_F_TCP_BAD) || + (comp->csum_flags & IONIC_RXQ_COMP_CSUM_F_UDP_BAD) || + (comp->csum_flags & IONIC_RXQ_COMP_CSUM_F_IP_BAD))) + stats->csum_error++; + + if (likely(netdev->features & NETIF_F_HW_VLAN_CTAG_RX) && + (comp->csum_flags & IONIC_RXQ_COMP_CSUM_F_VLAN)) { + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), + le16_to_cpu(comp->vlan_tci)); + stats->vlan_stripped++; + } + + if (unlikely(q->features & IONIC_RXQ_F_HWSTAMP)) { + __le64 *cq_desc_hwstamp; + u64 hwstamp; + + cq_desc_hwstamp = + cq_info->cq_desc + + qcq->cq.desc_size - + sizeof(struct ionic_rxq_comp) - + IONIC_HWSTAMP_CQ_NEGOFFSET; + + hwstamp = le64_to_cpu(*cq_desc_hwstamp); + + if (hwstamp != IONIC_HWSTAMP_INVALID) { + skb_hwtstamps(skb)->hwtstamp = ionic_lif_phc_ktime(q->lif, hwstamp); + stats->hwstamp_valid++; + } else { + stats->hwstamp_invalid++; + } + } + + if (le16_to_cpu(comp->len) <= q->lif->rx_copybreak) + napi_gro_receive(&qcq->napi, skb); + else + napi_gro_frags(&qcq->napi); +} + +bool ionic_rx_service(struct ionic_cq *cq, struct ionic_cq_info *cq_info) +{ + struct ionic_queue *q = cq->bound_q; + struct ionic_desc_info *desc_info; + struct ionic_rxq_comp *comp; + + comp = cq_info->cq_desc + cq->desc_size - sizeof(*comp); + + if (!color_match(comp->pkt_type_color, cq->done_color)) + return false; + + /* check for empty queue */ + if (q->tail_idx == q->head_idx) + return false; + + if (q->tail_idx != le16_to_cpu(comp->comp_index)) + return false; + + desc_info = &q->info[q->tail_idx]; + q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); + + /* clean the related q entry, only one per qc completion */ + ionic_rx_clean(q, desc_info, cq_info, desc_info->cb_arg); + + desc_info->cb = NULL; + desc_info->cb_arg = NULL; + + return true; +} + +void ionic_rx_fill(struct ionic_queue *q) +{ + struct net_device *netdev = q->lif->netdev; + struct ionic_desc_info *desc_info; + struct ionic_rxq_sg_desc *sg_desc; + struct ionic_rxq_sg_elem *sg_elem; + struct ionic_buf_info *buf_info; + unsigned int fill_threshold; + struct ionic_rxq_desc *desc; + unsigned int remain_len; + unsigned int frag_len; + unsigned int nfrags; + unsigned int n_fill; + unsigned int i, j; + unsigned int len; + + n_fill = ionic_q_space_avail(q); + + fill_threshold = min_t(unsigned int, IONIC_RX_FILL_THRESHOLD, + q->num_descs / IONIC_RX_FILL_DIV); + if (n_fill < fill_threshold) + return; + + len = netdev->mtu + ETH_HLEN + VLAN_HLEN; + + for (i = n_fill; i; i--) { + nfrags = 0; + remain_len = len; + desc_info = &q->info[q->head_idx]; + desc = desc_info->desc; + buf_info = &desc_info->bufs[0]; + + if (!buf_info->page) { /* alloc a new buffer? */ + if (unlikely(ionic_rx_page_alloc(q, buf_info))) { + desc->addr = 0; + desc->len = 0; + return; + } + } + + /* fill main descriptor - buf[0] */ + desc->addr = cpu_to_le64(buf_info->dma_addr + buf_info->page_offset); + frag_len = min_t(u16, len, min_t(u32, IONIC_MAX_BUF_LEN, + IONIC_PAGE_SIZE - buf_info->page_offset)); + desc->len = cpu_to_le16(frag_len); + remain_len -= frag_len; + buf_info++; + nfrags++; + + /* fill sg descriptors - buf[1..n] */ + sg_desc = desc_info->sg_desc; + for (j = 0; remain_len > 0 && j < q->max_sg_elems; j++) { + sg_elem = &sg_desc->elems[j]; + if (!buf_info->page) { /* alloc a new sg buffer? */ + if (unlikely(ionic_rx_page_alloc(q, buf_info))) { + sg_elem->addr = 0; + sg_elem->len = 0; + return; + } + } + + sg_elem->addr = cpu_to_le64(buf_info->dma_addr + buf_info->page_offset); + frag_len = min_t(u16, remain_len, min_t(u32, IONIC_MAX_BUF_LEN, + IONIC_PAGE_SIZE - + buf_info->page_offset)); + sg_elem->len = cpu_to_le16(frag_len); + remain_len -= frag_len; + buf_info++; + nfrags++; + } + + /* clear end sg element as a sentinel */ + if (j < q->max_sg_elems) { + sg_elem = &sg_desc->elems[j]; + memset(sg_elem, 0, sizeof(*sg_elem)); + } + + desc->opcode = (nfrags > 1) ? IONIC_RXQ_DESC_OPCODE_SG : + IONIC_RXQ_DESC_OPCODE_SIMPLE; + desc_info->nbufs = nfrags; + + ionic_rxq_post(q, false, ionic_rx_clean, NULL); + } + + ionic_dbell_ring(q->lif->kern_dbpage, q->hw_type, + q->dbval | q->head_idx); + + q->dbell_deadline = IONIC_RX_MIN_DOORBELL_DEADLINE; + q->dbell_jiffies = jiffies; + + mod_timer(&q_to_qcq(q)->napi_qcq->napi_deadline, + jiffies + IONIC_NAPI_DEADLINE); +} + +void ionic_rx_empty(struct ionic_queue *q) +{ + struct ionic_desc_info *desc_info; + struct ionic_buf_info *buf_info; + unsigned int i, j; + + for (i = 0; i < q->num_descs; i++) { + desc_info = &q->info[i]; + for (j = 0; j < IONIC_RX_MAX_SG_ELEMS + 1; j++) { + buf_info = &desc_info->bufs[j]; + if (buf_info->page) + ionic_rx_page_free(q, buf_info); + } + + desc_info->nbufs = 0; + desc_info->cb = NULL; + desc_info->cb_arg = NULL; + } + + q->head_idx = 0; + q->tail_idx = 0; +} + +static void ionic_dim_update(struct ionic_qcq *qcq, int napi_mode) +{ + struct dim_sample dim_sample; + struct ionic_lif *lif; + unsigned int qi; + u64 pkts, bytes; + + if (!qcq->intr.dim_coal_hw) + return; + + lif = qcq->q.lif; + qi = qcq->cq.bound_q->index; + + switch (napi_mode) { + case IONIC_LIF_F_TX_DIM_INTR: + pkts = lif->txqstats[qi].pkts; + bytes = lif->txqstats[qi].bytes; + break; + case IONIC_LIF_F_RX_DIM_INTR: + pkts = lif->rxqstats[qi].pkts; + bytes = lif->rxqstats[qi].bytes; + break; + default: + pkts = lif->txqstats[qi].pkts + lif->rxqstats[qi].pkts; + bytes = lif->txqstats[qi].bytes + lif->rxqstats[qi].bytes; + break; + } + + dim_update_sample(qcq->cq.bound_intr->rearm_count, + pkts, bytes, &dim_sample); + + net_dim(&qcq->dim, dim_sample); +} + +int ionic_tx_napi(struct napi_struct *napi, int budget) +{ + struct ionic_qcq *qcq = napi_to_qcq(napi); + struct ionic_cq *cq = napi_to_cq(napi); + struct ionic_dev *idev; + struct ionic_lif *lif; + u32 work_done = 0; + u32 flags = 0; + + lif = cq->bound_q->lif; + idev = &lif->ionic->idev; + + work_done = ionic_cq_service(cq, budget, + ionic_tx_service, NULL, NULL); + + if (work_done < budget && napi_complete_done(napi, work_done)) { + ionic_dim_update(qcq, IONIC_LIF_F_TX_DIM_INTR); + flags |= IONIC_INTR_CRED_UNMASK; + cq->bound_intr->rearm_count++; + } + + if (work_done || flags) { + flags |= IONIC_INTR_CRED_RESET_COALESCE; + ionic_intr_credits(idev->intr_ctrl, + cq->bound_intr->index, + work_done, flags); + } + + if (!work_done && ionic_txq_poke_doorbell(&qcq->q)) + mod_timer(&qcq->napi_deadline, jiffies + IONIC_NAPI_DEADLINE); + + return work_done; +} + +int ionic_rx_napi(struct napi_struct *napi, int budget) +{ + struct ionic_qcq *qcq = napi_to_qcq(napi); + struct ionic_cq *cq = napi_to_cq(napi); + struct ionic_dev *idev; + struct ionic_lif *lif; + u32 work_done = 0; + u32 flags = 0; + + lif = cq->bound_q->lif; + idev = &lif->ionic->idev; + + work_done = ionic_cq_service(cq, budget, + ionic_rx_service, NULL, NULL); + + ionic_rx_fill(cq->bound_q); + + if (work_done < budget && napi_complete_done(napi, work_done)) { + ionic_dim_update(qcq, IONIC_LIF_F_RX_DIM_INTR); + flags |= IONIC_INTR_CRED_UNMASK; + cq->bound_intr->rearm_count++; + } + + if (work_done || flags) { + flags |= IONIC_INTR_CRED_RESET_COALESCE; + ionic_intr_credits(idev->intr_ctrl, + cq->bound_intr->index, + work_done, flags); + } + + if (!work_done && ionic_rxq_poke_doorbell(&qcq->q)) + mod_timer(&qcq->napi_deadline, jiffies + IONIC_NAPI_DEADLINE); + + return work_done; +} + +int ionic_txrx_napi(struct napi_struct *napi, int budget) +{ + struct ionic_qcq *rxqcq = napi_to_qcq(napi); + struct ionic_cq *rxcq = napi_to_cq(napi); + unsigned int qi = rxcq->bound_q->index; + struct ionic_qcq *txqcq; + struct ionic_dev *idev; + struct ionic_lif *lif; + struct ionic_cq *txcq; + bool resched = false; + u32 rx_work_done = 0; + u32 tx_work_done = 0; + u32 flags = 0; + + lif = rxcq->bound_q->lif; + idev = &lif->ionic->idev; + txqcq = lif->txqcqs[qi]; + txcq = &lif->txqcqs[qi]->cq; + + tx_work_done = ionic_cq_service(txcq, IONIC_TX_BUDGET_DEFAULT, + ionic_tx_service, NULL, NULL); + + rx_work_done = ionic_cq_service(rxcq, budget, + ionic_rx_service, NULL, NULL); + + ionic_rx_fill(rxcq->bound_q); + + if (rx_work_done < budget && napi_complete_done(napi, rx_work_done)) { + ionic_dim_update(rxqcq, 0); + flags |= IONIC_INTR_CRED_UNMASK; + rxcq->bound_intr->rearm_count++; + } + + if (rx_work_done || flags) { + flags |= IONIC_INTR_CRED_RESET_COALESCE; + ionic_intr_credits(idev->intr_ctrl, rxcq->bound_intr->index, + tx_work_done + rx_work_done, flags); + } + + if (!rx_work_done && ionic_rxq_poke_doorbell(&rxqcq->q)) + resched = true; + if (!tx_work_done && ionic_txq_poke_doorbell(&txqcq->q)) + resched = true; + if (resched) + mod_timer(&rxqcq->napi_deadline, jiffies + IONIC_NAPI_DEADLINE); + + return rx_work_done; +} + +static dma_addr_t ionic_tx_map_single(struct ionic_queue *q, + void *data, size_t len) +{ + struct ionic_tx_stats *stats = q_to_tx_stats(q); + struct device *dev = q->dev; + dma_addr_t dma_addr; + + dma_addr = dma_map_single(dev, data, len, DMA_TO_DEVICE); + if (dma_mapping_error(dev, dma_addr)) { + net_warn_ratelimited("%s: DMA single map failed on %s!\n", + q->lif->netdev->name, q->name); + stats->dma_map_err++; + return 0; + } + return dma_addr; +} + +static dma_addr_t ionic_tx_map_frag(struct ionic_queue *q, + const skb_frag_t *frag, + size_t offset, size_t len) +{ + struct ionic_tx_stats *stats = q_to_tx_stats(q); + struct device *dev = q->dev; + dma_addr_t dma_addr; + + dma_addr = skb_frag_dma_map(dev, frag, offset, len, DMA_TO_DEVICE); + if (dma_mapping_error(dev, dma_addr)) { + net_warn_ratelimited("%s: DMA frag map failed on %s!\n", + q->lif->netdev->name, q->name); + stats->dma_map_err++; + } + return dma_addr; +} + +static int ionic_tx_map_skb(struct ionic_queue *q, struct sk_buff *skb, + struct ionic_desc_info *desc_info) +{ + struct ionic_buf_info *buf_info = desc_info->bufs; + struct ionic_tx_stats *stats = q_to_tx_stats(q); + struct device *dev = q->dev; + dma_addr_t dma_addr; + unsigned int nfrags; + skb_frag_t *frag; + int frag_idx; + + dma_addr = ionic_tx_map_single(q, skb->data, skb_headlen(skb)); + if (dma_mapping_error(dev, dma_addr)) { + stats->dma_map_err++; + return -EIO; + } + buf_info->dma_addr = dma_addr; + buf_info->len = skb_headlen(skb); + buf_info++; + + frag = skb_shinfo(skb)->frags; + nfrags = skb_shinfo(skb)->nr_frags; + for (frag_idx = 0; frag_idx < nfrags; frag_idx++, frag++) { + dma_addr = ionic_tx_map_frag(q, frag, 0, skb_frag_size(frag)); + if (dma_mapping_error(dev, dma_addr)) { + stats->dma_map_err++; + goto dma_fail; + } + buf_info->dma_addr = dma_addr; + buf_info->len = skb_frag_size(frag); + buf_info++; + } + + desc_info->nbufs = 1 + nfrags; + + return 0; + +dma_fail: + /* unwind the frag mappings and the head mapping */ + while (frag_idx > 0) { + frag_idx--; + buf_info--; + dma_unmap_page(dev, buf_info->dma_addr, + buf_info->len, DMA_TO_DEVICE); + } + dma_unmap_single(dev, buf_info->dma_addr, buf_info->len, DMA_TO_DEVICE); + return -EIO; +} + +static void ionic_tx_desc_unmap_bufs(struct ionic_queue *q, + struct ionic_desc_info *desc_info) +{ + struct ionic_buf_info *buf_info = desc_info->bufs; + struct device *dev = q->dev; + unsigned int i; + + if (!desc_info->nbufs) + return; + + dma_unmap_single(dev, (dma_addr_t)buf_info->dma_addr, + buf_info->len, DMA_TO_DEVICE); + buf_info++; + for (i = 1; i < desc_info->nbufs; i++, buf_info++) + dma_unmap_page(dev, (dma_addr_t)buf_info->dma_addr, + buf_info->len, DMA_TO_DEVICE); + + desc_info->nbufs = 0; +} + +static void ionic_tx_clean(struct ionic_queue *q, + struct ionic_desc_info *desc_info, + struct ionic_cq_info *cq_info, + void *cb_arg) +{ + struct ionic_tx_stats *stats = q_to_tx_stats(q); + struct ionic_qcq *qcq = q_to_qcq(q); + struct sk_buff *skb = cb_arg; + u16 qi; + + ionic_tx_desc_unmap_bufs(q, desc_info); + + if (!skb) + return; + + qi = skb_get_queue_mapping(skb); + + if (unlikely(q->features & IONIC_TXQ_F_HWSTAMP)) { + if (cq_info) { + struct skb_shared_hwtstamps hwts = {}; + __le64 *cq_desc_hwstamp; + u64 hwstamp; + + cq_desc_hwstamp = + cq_info->cq_desc + + qcq->cq.desc_size - + sizeof(struct ionic_txq_comp) - + IONIC_HWSTAMP_CQ_NEGOFFSET; + + hwstamp = le64_to_cpu(*cq_desc_hwstamp); + + if (hwstamp != IONIC_HWSTAMP_INVALID) { + hwts.hwtstamp = ionic_lif_phc_ktime(q->lif, hwstamp); + + skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; + skb_tstamp_tx(skb, &hwts); + + stats->hwstamp_valid++; + } else { + stats->hwstamp_invalid++; + } + } + + } else if (unlikely(__netif_subqueue_stopped(q->lif->netdev, qi))) { + netif_wake_subqueue(q->lif->netdev, qi); + } + + desc_info->bytes = skb->len; + stats->clean++; + + dev_consume_skb_any(skb); +} + +bool ionic_tx_service(struct ionic_cq *cq, struct ionic_cq_info *cq_info) +{ + struct ionic_queue *q = cq->bound_q; + struct ionic_desc_info *desc_info; + struct ionic_txq_comp *comp; + int bytes = 0; + int pkts = 0; + u16 index; + + comp = cq_info->cq_desc + cq->desc_size - sizeof(*comp); + + if (!color_match(comp->color, cq->done_color)) + return false; + + /* clean the related q entries, there could be + * several q entries completed for each cq completion + */ + do { + desc_info = &q->info[q->tail_idx]; + desc_info->bytes = 0; + index = q->tail_idx; + q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); + ionic_tx_clean(q, desc_info, cq_info, desc_info->cb_arg); + if (desc_info->cb_arg) { + pkts++; + bytes += desc_info->bytes; + } + desc_info->cb = NULL; + desc_info->cb_arg = NULL; + } while (index != le16_to_cpu(comp->comp_index)); + + if (pkts && bytes && !unlikely(q->features & IONIC_TXQ_F_HWSTAMP)) + netdev_tx_completed_queue(q_to_ndq(q), pkts, bytes); + + return true; +} + +void ionic_tx_flush(struct ionic_cq *cq) +{ + struct ionic_dev *idev = &cq->lif->ionic->idev; + u32 work_done; + + work_done = ionic_cq_service(cq, cq->num_descs, + ionic_tx_service, NULL, NULL); + if (work_done) + ionic_intr_credits(idev->intr_ctrl, cq->bound_intr->index, + work_done, IONIC_INTR_CRED_RESET_COALESCE); +} + +void ionic_tx_empty(struct ionic_queue *q) +{ + struct ionic_desc_info *desc_info; + int bytes = 0; + int pkts = 0; + + /* walk the not completed tx entries, if any */ + while (q->head_idx != q->tail_idx) { + desc_info = &q->info[q->tail_idx]; + desc_info->bytes = 0; + q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); + ionic_tx_clean(q, desc_info, NULL, desc_info->cb_arg); + if (desc_info->cb_arg) { + pkts++; + bytes += desc_info->bytes; + } + desc_info->cb = NULL; + desc_info->cb_arg = NULL; + } + + if (pkts && bytes && !unlikely(q->features & IONIC_TXQ_F_HWSTAMP)) + netdev_tx_completed_queue(q_to_ndq(q), pkts, bytes); +} + +static int ionic_tx_tcp_inner_pseudo_csum(struct sk_buff *skb) +{ + int err; + + err = skb_cow_head(skb, 0); + if (err) + return err; + + if (skb->protocol == cpu_to_be16(ETH_P_IP)) { + inner_ip_hdr(skb)->check = 0; + inner_tcp_hdr(skb)->check = + ~csum_tcpudp_magic(inner_ip_hdr(skb)->saddr, + inner_ip_hdr(skb)->daddr, + 0, IPPROTO_TCP, 0); + } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { + inner_tcp_hdr(skb)->check = + ~csum_ipv6_magic(&inner_ipv6_hdr(skb)->saddr, + &inner_ipv6_hdr(skb)->daddr, + 0, IPPROTO_TCP, 0); + } + + return 0; +} + +static int ionic_tx_tcp_pseudo_csum(struct sk_buff *skb) +{ + int err; + + err = skb_cow_head(skb, 0); + if (err) + return err; + + if (skb->protocol == cpu_to_be16(ETH_P_IP)) { + ip_hdr(skb)->check = 0; + tcp_hdr(skb)->check = + ~csum_tcpudp_magic(ip_hdr(skb)->saddr, + ip_hdr(skb)->daddr, + 0, IPPROTO_TCP, 0); + } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { + tcp_v6_gso_csum_prep(skb); + } + + return 0; +} + +static void ionic_tx_tso_post(struct ionic_queue *q, struct ionic_txq_desc *desc, + struct sk_buff *skb, + dma_addr_t addr, u8 nsge, u16 len, + unsigned int hdrlen, unsigned int mss, + bool outer_csum, + u16 vlan_tci, bool has_vlan, + bool start, bool done) +{ + u8 flags = 0; + u64 cmd; + + flags |= has_vlan ? IONIC_TXQ_DESC_FLAG_VLAN : 0; + flags |= outer_csum ? IONIC_TXQ_DESC_FLAG_ENCAP : 0; + flags |= start ? IONIC_TXQ_DESC_FLAG_TSO_SOT : 0; + flags |= done ? IONIC_TXQ_DESC_FLAG_TSO_EOT : 0; + + cmd = encode_txq_desc_cmd(IONIC_TXQ_DESC_OPCODE_TSO, flags, nsge, addr); + desc->cmd = cpu_to_le64(cmd); + desc->len = cpu_to_le16(len); + desc->vlan_tci = cpu_to_le16(vlan_tci); + desc->hdr_len = cpu_to_le16(hdrlen); + desc->mss = cpu_to_le16(mss); + + if (start) { + skb_tx_timestamp(skb); + if (!unlikely(q->features & IONIC_TXQ_F_HWSTAMP)) + netdev_tx_sent_queue(q_to_ndq(q), skb->len); + ionic_txq_post(q, false, ionic_tx_clean, skb); + } else { + ionic_txq_post(q, done, NULL, NULL); + } +} + +static int ionic_tx_tso(struct ionic_queue *q, struct sk_buff *skb) +{ + struct ionic_tx_stats *stats = q_to_tx_stats(q); + struct ionic_desc_info *desc_info; + struct ionic_buf_info *buf_info; + struct ionic_txq_sg_elem *elem; + struct ionic_txq_desc *desc; + unsigned int chunk_len; + unsigned int frag_rem; + unsigned int tso_rem; + unsigned int seg_rem; + dma_addr_t desc_addr; + dma_addr_t frag_addr; + unsigned int hdrlen; + unsigned int len; + unsigned int mss; + bool start, done; + bool outer_csum; + bool has_vlan; + u16 desc_len; + u8 desc_nsge; + u16 vlan_tci; + bool encap; + int err; + + desc_info = &q->info[q->head_idx]; + buf_info = desc_info->bufs; + + if (unlikely(ionic_tx_map_skb(q, skb, desc_info))) + return -EIO; + + len = skb->len; + mss = skb_shinfo(skb)->gso_size; + outer_csum = (skb_shinfo(skb)->gso_type & SKB_GSO_GRE_CSUM) || + (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM); + has_vlan = !!skb_vlan_tag_present(skb); + vlan_tci = skb_vlan_tag_get(skb); + encap = skb->encapsulation; + + /* Preload inner-most TCP csum field with IP pseudo hdr + * calculated with IP length set to zero. HW will later + * add in length to each TCP segment resulting from the TSO. + */ + + if (encap) + err = ionic_tx_tcp_inner_pseudo_csum(skb); + else + err = ionic_tx_tcp_pseudo_csum(skb); + if (err) { + /* clean up mapping from ionic_tx_map_skb */ + ionic_tx_desc_unmap_bufs(q, desc_info); + return err; + } + + if (encap) + hdrlen = skb_inner_tcp_all_headers(skb); + else + hdrlen = skb_tcp_all_headers(skb); + + tso_rem = len; + seg_rem = min(tso_rem, hdrlen + mss); + + frag_addr = 0; + frag_rem = 0; + + start = true; + + while (tso_rem > 0) { + desc = NULL; + elem = NULL; + desc_addr = 0; + desc_len = 0; + desc_nsge = 0; + /* use fragments until we have enough to post a single descriptor */ + while (seg_rem > 0) { + /* if the fragment is exhausted then move to the next one */ + if (frag_rem == 0) { + /* grab the next fragment */ + frag_addr = buf_info->dma_addr; + frag_rem = buf_info->len; + buf_info++; + } + chunk_len = min(frag_rem, seg_rem); + if (!desc) { + /* fill main descriptor */ + desc = desc_info->txq_desc; + elem = desc_info->txq_sg_desc->elems; + desc_addr = frag_addr; + desc_len = chunk_len; + } else { + /* fill sg descriptor */ + elem->addr = cpu_to_le64(frag_addr); + elem->len = cpu_to_le16(chunk_len); + elem++; + desc_nsge++; + } + frag_addr += chunk_len; + frag_rem -= chunk_len; + tso_rem -= chunk_len; + seg_rem -= chunk_len; + } + seg_rem = min(tso_rem, mss); + done = (tso_rem == 0); + /* post descriptor */ + ionic_tx_tso_post(q, desc, skb, + desc_addr, desc_nsge, desc_len, + hdrlen, mss, outer_csum, vlan_tci, has_vlan, + start, done); + start = false; + /* Buffer information is stored with the first tso descriptor */ + desc_info = &q->info[q->head_idx]; + desc_info->nbufs = 0; + } + + stats->pkts += DIV_ROUND_UP(len - hdrlen, mss); + stats->bytes += len; + stats->tso++; + stats->tso_bytes = len; + + return 0; +} + +static void ionic_tx_calc_csum(struct ionic_queue *q, struct sk_buff *skb, + struct ionic_desc_info *desc_info) +{ + struct ionic_txq_desc *desc = desc_info->txq_desc; + struct ionic_buf_info *buf_info = desc_info->bufs; + struct ionic_tx_stats *stats = q_to_tx_stats(q); + bool has_vlan; + u8 flags = 0; + bool encap; + u64 cmd; + + has_vlan = !!skb_vlan_tag_present(skb); + encap = skb->encapsulation; + + flags |= has_vlan ? IONIC_TXQ_DESC_FLAG_VLAN : 0; + flags |= encap ? IONIC_TXQ_DESC_FLAG_ENCAP : 0; + + cmd = encode_txq_desc_cmd(IONIC_TXQ_DESC_OPCODE_CSUM_PARTIAL, + flags, skb_shinfo(skb)->nr_frags, + buf_info->dma_addr); + desc->cmd = cpu_to_le64(cmd); + desc->len = cpu_to_le16(buf_info->len); + if (has_vlan) { + desc->vlan_tci = cpu_to_le16(skb_vlan_tag_get(skb)); + stats->vlan_inserted++; + } else { + desc->vlan_tci = 0; + } + desc->csum_start = cpu_to_le16(skb_checksum_start_offset(skb)); + desc->csum_offset = cpu_to_le16(skb->csum_offset); + + if (skb_csum_is_sctp(skb)) + stats->crc32_csum++; + else + stats->csum++; +} + +static void ionic_tx_calc_no_csum(struct ionic_queue *q, struct sk_buff *skb, + struct ionic_desc_info *desc_info) +{ + struct ionic_txq_desc *desc = desc_info->txq_desc; + struct ionic_buf_info *buf_info = desc_info->bufs; + struct ionic_tx_stats *stats = q_to_tx_stats(q); + bool has_vlan; + u8 flags = 0; + bool encap; + u64 cmd; + + has_vlan = !!skb_vlan_tag_present(skb); + encap = skb->encapsulation; + + flags |= has_vlan ? IONIC_TXQ_DESC_FLAG_VLAN : 0; + flags |= encap ? IONIC_TXQ_DESC_FLAG_ENCAP : 0; + + cmd = encode_txq_desc_cmd(IONIC_TXQ_DESC_OPCODE_CSUM_NONE, + flags, skb_shinfo(skb)->nr_frags, + buf_info->dma_addr); + desc->cmd = cpu_to_le64(cmd); + desc->len = cpu_to_le16(buf_info->len); + if (has_vlan) { + desc->vlan_tci = cpu_to_le16(skb_vlan_tag_get(skb)); + stats->vlan_inserted++; + } else { + desc->vlan_tci = 0; + } + desc->csum_start = 0; + desc->csum_offset = 0; + + stats->csum_none++; +} + +static void ionic_tx_skb_frags(struct ionic_queue *q, struct sk_buff *skb, + struct ionic_desc_info *desc_info) +{ + struct ionic_txq_sg_desc *sg_desc = desc_info->txq_sg_desc; + struct ionic_buf_info *buf_info = &desc_info->bufs[1]; + struct ionic_txq_sg_elem *elem = sg_desc->elems; + struct ionic_tx_stats *stats = q_to_tx_stats(q); + unsigned int i; + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, buf_info++, elem++) { + elem->addr = cpu_to_le64(buf_info->dma_addr); + elem->len = cpu_to_le16(buf_info->len); + } + + stats->frags += skb_shinfo(skb)->nr_frags; +} + +static int ionic_tx(struct ionic_queue *q, struct sk_buff *skb) +{ + struct ionic_desc_info *desc_info = &q->info[q->head_idx]; + struct ionic_tx_stats *stats = q_to_tx_stats(q); + + if (unlikely(ionic_tx_map_skb(q, skb, desc_info))) + return -EIO; + + /* set up the initial descriptor */ + if (skb->ip_summed == CHECKSUM_PARTIAL) + ionic_tx_calc_csum(q, skb, desc_info); + else + ionic_tx_calc_no_csum(q, skb, desc_info); + + /* add frags */ + ionic_tx_skb_frags(q, skb, desc_info); + + skb_tx_timestamp(skb); + stats->pkts++; + stats->bytes += skb->len; + + if (!unlikely(q->features & IONIC_TXQ_F_HWSTAMP)) + netdev_tx_sent_queue(q_to_ndq(q), skb->len); + ionic_txq_post(q, !netdev_xmit_more(), ionic_tx_clean, skb); + + return 0; +} + +static int ionic_tx_descs_needed(struct ionic_queue *q, struct sk_buff *skb) +{ + struct ionic_tx_stats *stats = q_to_tx_stats(q); + int ndescs; + int err; + + /* Each desc is mss long max, so a descriptor for each gso_seg */ + if (skb_is_gso(skb)) + ndescs = skb_shinfo(skb)->gso_segs; + else + ndescs = 1; + + /* If non-TSO, just need 1 desc and nr_frags sg elems */ + if (skb_shinfo(skb)->nr_frags <= q->max_sg_elems) + return ndescs; + + /* Too many frags, so linearize */ + err = skb_linearize(skb); + if (err) + return err; + + stats->linearize++; + + return ndescs; +} + +static int ionic_maybe_stop_tx(struct ionic_queue *q, int ndescs) +{ + int stopped = 0; + + if (unlikely(!ionic_q_has_space(q, ndescs))) { + netif_stop_subqueue(q->lif->netdev, q->index); + stopped = 1; + + /* Might race with ionic_tx_clean, check again */ + smp_rmb(); + if (ionic_q_has_space(q, ndescs)) { + netif_wake_subqueue(q->lif->netdev, q->index); + stopped = 0; + } + } + + return stopped; +} + +static netdev_tx_t ionic_start_hwstamp_xmit(struct sk_buff *skb, + struct net_device *netdev) +{ + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_queue *q = &lif->hwstamp_txq->q; + int err, ndescs; + + /* Does not stop/start txq, because we post to a separate tx queue + * for timestamping, and if a packet can't be posted immediately to + * the timestamping queue, it is dropped. + */ + + ndescs = ionic_tx_descs_needed(q, skb); + if (unlikely(ndescs < 0)) + goto err_out_drop; + + if (unlikely(!ionic_q_has_space(q, ndescs))) + goto err_out_drop; + + skb_shinfo(skb)->tx_flags |= SKBTX_HW_TSTAMP; + if (skb_is_gso(skb)) + err = ionic_tx_tso(q, skb); + else + err = ionic_tx(q, skb); + + if (err) + goto err_out_drop; + + return NETDEV_TX_OK; + +err_out_drop: + q->drop++; + dev_kfree_skb(skb); + return NETDEV_TX_OK; +} + +netdev_tx_t ionic_start_xmit(struct sk_buff *skb, struct net_device *netdev) +{ + u16 queue_index = skb_get_queue_mapping(skb); + struct ionic_lif *lif = netdev_priv(netdev); + struct ionic_queue *q; + int ndescs; + int err; + + if (unlikely(!test_bit(IONIC_LIF_F_UP, lif->state))) { + dev_kfree_skb(skb); + return NETDEV_TX_OK; + } + + if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) + if (lif->hwstamp_txq && lif->phc->ts_config_tx_mode) + return ionic_start_hwstamp_xmit(skb, netdev); + + if (unlikely(queue_index >= lif->nxqs)) + queue_index = 0; + q = &lif->txqcqs[queue_index]->q; + + ndescs = ionic_tx_descs_needed(q, skb); + if (ndescs < 0) + goto err_out_drop; + + if (unlikely(ionic_maybe_stop_tx(q, ndescs))) + return NETDEV_TX_BUSY; + + if (skb_is_gso(skb)) + err = ionic_tx_tso(q, skb); + else + err = ionic_tx(q, skb); + + if (err) + goto err_out_drop; + + /* Stop the queue if there aren't descriptors for the next packet. + * Since our SG lists per descriptor take care of most of the possible + * fragmentation, we don't need to have many descriptors available. + */ + ionic_maybe_stop_tx(q, 4); + + return NETDEV_TX_OK; + +err_out_drop: + q->drop++; + dev_kfree_skb(skb); + return NETDEV_TX_OK; +} diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.h b/drivers/net/ethernet/pensando/ionic/ionic_txrx.h new file mode 100644 index 000000000..d7cbaad8a --- /dev/null +++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ + +#ifndef _IONIC_TXRX_H_ +#define _IONIC_TXRX_H_ + +void ionic_tx_flush(struct ionic_cq *cq); + +void ionic_rx_fill(struct ionic_queue *q); +void ionic_rx_empty(struct ionic_queue *q); +void ionic_tx_empty(struct ionic_queue *q); +int ionic_rx_napi(struct napi_struct *napi, int budget); +int ionic_tx_napi(struct napi_struct *napi, int budget); +int ionic_txrx_napi(struct napi_struct *napi, int budget); +netdev_tx_t ionic_start_xmit(struct sk_buff *skb, struct net_device *netdev); + +bool ionic_rx_service(struct ionic_cq *cq, struct ionic_cq_info *cq_info); +bool ionic_tx_service(struct ionic_cq *cq, struct ionic_cq_info *cq_info); + +#endif /* _IONIC_TXRX_H_ */ |