diff options
Diffstat (limited to 'drivers/net/ethernet/emulex/benet/be_main.c')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be_main.c | 6299 |
1 files changed, 6299 insertions, 0 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c new file mode 100644 index 000000000..05cb2f7cc --- /dev/null +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -0,0 +1,6299 @@ +/* + * Copyright (C) 2005 - 2016 Broadcom + * All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. The full GNU General + * Public License is included in this distribution in the file called COPYING. + * + * Contact Information: + * linux-drivers@emulex.com + * + * Emulex + * 3333 Susan Street + * Costa Mesa, CA 92626 + */ + +#include <linux/prefetch.h> +#include <linux/module.h> +#include "be.h" +#include "be_cmds.h" +#include <asm/div64.h> +#include <linux/aer.h> +#include <linux/if_bridge.h> +#include <net/busy_poll.h> +#include <net/vxlan.h> + +MODULE_VERSION(DRV_VER); +MODULE_DESCRIPTION(DRV_DESC " " DRV_VER); +MODULE_AUTHOR("Emulex Corporation"); +MODULE_LICENSE("GPL"); + +/* num_vfs module param is obsolete. + * Use sysfs method to enable/disable VFs. + */ +static unsigned int num_vfs; +module_param(num_vfs, uint, 0444); +MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize"); + +static ushort rx_frag_size = 2048; +module_param(rx_frag_size, ushort, 0444); +MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data."); + +/* Per-module error detection/recovery workq shared across all functions. + * Each function schedules its own work request on this shared workq. + */ +static struct workqueue_struct *be_err_recovery_workq; + +static const struct pci_device_id be_dev_ids[] = { +#ifdef CONFIG_BE2NET_BE2 + { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) }, + { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) }, +#endif /* CONFIG_BE2NET_BE2 */ +#ifdef CONFIG_BE2NET_BE3 + { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) }, + { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) }, +#endif /* CONFIG_BE2NET_BE3 */ +#ifdef CONFIG_BE2NET_LANCER + { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)}, + { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)}, +#endif /* CONFIG_BE2NET_LANCER */ +#ifdef CONFIG_BE2NET_SKYHAWK + { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)}, + { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)}, +#endif /* CONFIG_BE2NET_SKYHAWK */ + { 0 } +}; +MODULE_DEVICE_TABLE(pci, be_dev_ids); + +/* Workqueue used by all functions for defering cmd calls to the adapter */ +static struct workqueue_struct *be_wq; + +/* UE Status Low CSR */ +static const char * const ue_status_low_desc[] = { + "CEV", + "CTX", + "DBUF", + "ERX", + "Host", + "MPU", + "NDMA", + "PTC ", + "RDMA ", + "RXF ", + "RXIPS ", + "RXULP0 ", + "RXULP1 ", + "RXULP2 ", + "TIM ", + "TPOST ", + "TPRE ", + "TXIPS ", + "TXULP0 ", + "TXULP1 ", + "UC ", + "WDMA ", + "TXULP2 ", + "HOST1 ", + "P0_OB_LINK ", + "P1_OB_LINK ", + "HOST_GPIO ", + "MBOX ", + "ERX2 ", + "SPARE ", + "JTAG ", + "MPU_INTPEND " +}; + +/* UE Status High CSR */ +static const char * const ue_status_hi_desc[] = { + "LPCMEMHOST", + "MGMT_MAC", + "PCS0ONLINE", + "MPU_IRAM", + "PCS1ONLINE", + "PCTL0", + "PCTL1", + "PMEM", + "RR", + "TXPB", + "RXPP", + "XAUI", + "TXP", + "ARM", + "IPC", + "HOST2", + "HOST3", + "HOST4", + "HOST5", + "HOST6", + "HOST7", + "ECRC", + "Poison TLP", + "NETC", + "PERIPH", + "LLTXULP", + "D2P", + "RCON", + "LDMA", + "LLTXP", + "LLTXPB", + "Unknown" +}; + +#define BE_VF_IF_EN_FLAGS (BE_IF_FLAGS_UNTAGGED | \ + BE_IF_FLAGS_BROADCAST | \ + BE_IF_FLAGS_MULTICAST | \ + BE_IF_FLAGS_PASS_L3L4_ERRORS) + +static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q) +{ + struct be_dma_mem *mem = &q->dma_mem; + + if (mem->va) { + dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va, + mem->dma); + mem->va = NULL; + } +} + +static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q, + u16 len, u16 entry_size) +{ + struct be_dma_mem *mem = &q->dma_mem; + + memset(q, 0, sizeof(*q)); + q->len = len; + q->entry_size = entry_size; + mem->size = len * entry_size; + mem->va = dma_zalloc_coherent(&adapter->pdev->dev, mem->size, &mem->dma, + GFP_KERNEL); + if (!mem->va) + return -ENOMEM; + return 0; +} + +static void be_reg_intr_set(struct be_adapter *adapter, bool enable) +{ + u32 reg, enabled; + + pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, + ®); + enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; + + if (!enabled && enable) + reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; + else if (enabled && !enable) + reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; + else + return; + + pci_write_config_dword(adapter->pdev, + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg); +} + +static void be_intr_set(struct be_adapter *adapter, bool enable) +{ + int status = 0; + + /* On lancer interrupts can't be controlled via this register */ + if (lancer_chip(adapter)) + return; + + if (be_check_error(adapter, BE_ERROR_EEH)) + return; + + status = be_cmd_intr_set(adapter, enable); + if (status) + be_reg_intr_set(adapter, enable); +} + +static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted) +{ + u32 val = 0; + + if (be_check_error(adapter, BE_ERROR_HW)) + return; + + val |= qid & DB_RQ_RING_ID_MASK; + val |= posted << DB_RQ_NUM_POSTED_SHIFT; + + wmb(); + iowrite32(val, adapter->db + DB_RQ_OFFSET); +} + +static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo, + u16 posted) +{ + u32 val = 0; + + if (be_check_error(adapter, BE_ERROR_HW)) + return; + + val |= txo->q.id & DB_TXULP_RING_ID_MASK; + val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT; + + wmb(); + iowrite32(val, adapter->db + txo->db_offset); +} + +static void be_eq_notify(struct be_adapter *adapter, u16 qid, + bool arm, bool clear_int, u16 num_popped, + u32 eq_delay_mult_enc) +{ + u32 val = 0; + + val |= qid & DB_EQ_RING_ID_MASK; + val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT); + + if (be_check_error(adapter, BE_ERROR_HW)) + return; + + if (arm) + val |= 1 << DB_EQ_REARM_SHIFT; + if (clear_int) + val |= 1 << DB_EQ_CLR_SHIFT; + val |= 1 << DB_EQ_EVNT_SHIFT; + val |= num_popped << DB_EQ_NUM_POPPED_SHIFT; + val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT; + iowrite32(val, adapter->db + DB_EQ_OFFSET); +} + +void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped) +{ + u32 val = 0; + + val |= qid & DB_CQ_RING_ID_MASK; + val |= ((qid & DB_CQ_RING_ID_EXT_MASK) << + DB_CQ_RING_ID_EXT_MASK_SHIFT); + + if (be_check_error(adapter, BE_ERROR_HW)) + return; + + if (arm) + val |= 1 << DB_CQ_REARM_SHIFT; + val |= num_popped << DB_CQ_NUM_POPPED_SHIFT; + iowrite32(val, adapter->db + DB_CQ_OFFSET); +} + +static int be_dev_mac_add(struct be_adapter *adapter, u8 *mac) +{ + int i; + + /* Check if mac has already been added as part of uc-list */ + for (i = 0; i < adapter->uc_macs; i++) { + if (ether_addr_equal(adapter->uc_list[i].mac, mac)) { + /* mac already added, skip addition */ + adapter->pmac_id[0] = adapter->pmac_id[i + 1]; + return 0; + } + } + + return be_cmd_pmac_add(adapter, mac, adapter->if_handle, + &adapter->pmac_id[0], 0); +} + +static void be_dev_mac_del(struct be_adapter *adapter, int pmac_id) +{ + int i; + + /* Skip deletion if the programmed mac is + * being used in uc-list + */ + for (i = 0; i < adapter->uc_macs; i++) { + if (adapter->pmac_id[i + 1] == pmac_id) + return; + } + be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0); +} + +static int be_mac_addr_set(struct net_device *netdev, void *p) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct device *dev = &adapter->pdev->dev; + struct sockaddr *addr = p; + int status; + u8 mac[ETH_ALEN]; + u32 old_pmac_id = adapter->pmac_id[0]; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + /* Proceed further only if, User provided MAC is different + * from active MAC + */ + if (ether_addr_equal(addr->sa_data, adapter->dev_mac)) + return 0; + + /* BE3 VFs without FILTMGMT privilege are not allowed to set its MAC + * address + */ + if (BEx_chip(adapter) && be_virtfn(adapter) && + !check_privilege(adapter, BE_PRIV_FILTMGMT)) + return -EPERM; + + /* if device is not running, copy MAC to netdev->dev_addr */ + if (!netif_running(netdev)) + goto done; + + /* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT + * privilege or if PF did not provision the new MAC address. + * On BE3, this cmd will always fail if the VF doesn't have the + * FILTMGMT privilege. This failure is OK, only if the PF programmed + * the MAC for the VF. + */ + mutex_lock(&adapter->rx_filter_lock); + status = be_dev_mac_add(adapter, (u8 *)addr->sa_data); + if (!status) { + + /* Delete the old programmed MAC. This call may fail if the + * old MAC was already deleted by the PF driver. + */ + if (adapter->pmac_id[0] != old_pmac_id) + be_dev_mac_del(adapter, old_pmac_id); + } + + mutex_unlock(&adapter->rx_filter_lock); + /* Decide if the new MAC is successfully activated only after + * querying the FW + */ + status = be_cmd_get_active_mac(adapter, adapter->pmac_id[0], mac, + adapter->if_handle, true, 0); + if (status) + goto err; + + /* The MAC change did not happen, either due to lack of privilege + * or PF didn't pre-provision. + */ + if (!ether_addr_equal(addr->sa_data, mac)) { + status = -EPERM; + goto err; + } + + /* Remember currently programmed MAC */ + ether_addr_copy(adapter->dev_mac, addr->sa_data); +done: + ether_addr_copy(netdev->dev_addr, addr->sa_data); + dev_info(dev, "MAC address changed to %pM\n", addr->sa_data); + return 0; +err: + dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data); + return status; +} + +/* BE2 supports only v0 cmd */ +static void *hw_stats_from_cmd(struct be_adapter *adapter) +{ + if (BE2_chip(adapter)) { + struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va; + + return &cmd->hw_stats; + } else if (BE3_chip(adapter)) { + struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va; + + return &cmd->hw_stats; + } else { + struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va; + + return &cmd->hw_stats; + } +} + +/* BE2 supports only v0 cmd */ +static void *be_erx_stats_from_cmd(struct be_adapter *adapter) +{ + if (BE2_chip(adapter)) { + struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter); + + return &hw_stats->erx; + } else if (BE3_chip(adapter)) { + struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter); + + return &hw_stats->erx; + } else { + struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter); + + return &hw_stats->erx; + } +} + +static void populate_be_v0_stats(struct be_adapter *adapter) +{ + struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter); + struct be_pmem_stats *pmem_sts = &hw_stats->pmem; + struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf; + struct be_port_rxf_stats_v0 *port_stats = + &rxf_stats->port[adapter->port_num]; + struct be_drv_stats *drvs = &adapter->drv_stats; + + be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats)); + drvs->rx_pause_frames = port_stats->rx_pause_frames; + drvs->rx_crc_errors = port_stats->rx_crc_errors; + drvs->rx_control_frames = port_stats->rx_control_frames; + drvs->rx_in_range_errors = port_stats->rx_in_range_errors; + drvs->rx_frame_too_long = port_stats->rx_frame_too_long; + drvs->rx_dropped_runt = port_stats->rx_dropped_runt; + drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs; + drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs; + drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs; + drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow; + drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length; + drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small; + drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short; + drvs->rx_out_range_errors = port_stats->rx_out_range_errors; + drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow; + drvs->rx_dropped_header_too_small = + port_stats->rx_dropped_header_too_small; + drvs->rx_address_filtered = + port_stats->rx_address_filtered + + port_stats->rx_vlan_filtered; + drvs->rx_alignment_symbol_errors = + port_stats->rx_alignment_symbol_errors; + + drvs->tx_pauseframes = port_stats->tx_pauseframes; + drvs->tx_controlframes = port_stats->tx_controlframes; + + if (adapter->port_num) + drvs->jabber_events = rxf_stats->port1_jabber_events; + else + drvs->jabber_events = rxf_stats->port0_jabber_events; + drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf; + drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr; + drvs->forwarded_packets = rxf_stats->forwarded_packets; + drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu; + drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr; + drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags; + adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops; +} + +static void populate_be_v1_stats(struct be_adapter *adapter) +{ + struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter); + struct be_pmem_stats *pmem_sts = &hw_stats->pmem; + struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf; + struct be_port_rxf_stats_v1 *port_stats = + &rxf_stats->port[adapter->port_num]; + struct be_drv_stats *drvs = &adapter->drv_stats; + + be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats)); + drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop; + drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames; + drvs->rx_pause_frames = port_stats->rx_pause_frames; + drvs->rx_crc_errors = port_stats->rx_crc_errors; + drvs->rx_control_frames = port_stats->rx_control_frames; + drvs->rx_in_range_errors = port_stats->rx_in_range_errors; + drvs->rx_frame_too_long = port_stats->rx_frame_too_long; + drvs->rx_dropped_runt = port_stats->rx_dropped_runt; + drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs; + drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs; + drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs; + drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length; + drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small; + drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short; + drvs->rx_out_range_errors = port_stats->rx_out_range_errors; + drvs->rx_dropped_header_too_small = + port_stats->rx_dropped_header_too_small; + drvs->rx_input_fifo_overflow_drop = + port_stats->rx_input_fifo_overflow_drop; + drvs->rx_address_filtered = port_stats->rx_address_filtered; + drvs->rx_alignment_symbol_errors = + port_stats->rx_alignment_symbol_errors; + drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop; + drvs->tx_pauseframes = port_stats->tx_pauseframes; + drvs->tx_controlframes = port_stats->tx_controlframes; + drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes; + drvs->jabber_events = port_stats->jabber_events; + drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf; + drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr; + drvs->forwarded_packets = rxf_stats->forwarded_packets; + drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu; + drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr; + drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags; + adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops; +} + +static void populate_be_v2_stats(struct be_adapter *adapter) +{ + struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter); + struct be_pmem_stats *pmem_sts = &hw_stats->pmem; + struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf; + struct be_port_rxf_stats_v2 *port_stats = + &rxf_stats->port[adapter->port_num]; + struct be_drv_stats *drvs = &adapter->drv_stats; + + be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats)); + drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop; + drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames; + drvs->rx_pause_frames = port_stats->rx_pause_frames; + drvs->rx_crc_errors = port_stats->rx_crc_errors; + drvs->rx_control_frames = port_stats->rx_control_frames; + drvs->rx_in_range_errors = port_stats->rx_in_range_errors; + drvs->rx_frame_too_long = port_stats->rx_frame_too_long; + drvs->rx_dropped_runt = port_stats->rx_dropped_runt; + drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs; + drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs; + drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs; + drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length; + drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small; + drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short; + drvs->rx_out_range_errors = port_stats->rx_out_range_errors; + drvs->rx_dropped_header_too_small = + port_stats->rx_dropped_header_too_small; + drvs->rx_input_fifo_overflow_drop = + port_stats->rx_input_fifo_overflow_drop; + drvs->rx_address_filtered = port_stats->rx_address_filtered; + drvs->rx_alignment_symbol_errors = + port_stats->rx_alignment_symbol_errors; + drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop; + drvs->tx_pauseframes = port_stats->tx_pauseframes; + drvs->tx_controlframes = port_stats->tx_controlframes; + drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes; + drvs->jabber_events = port_stats->jabber_events; + drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf; + drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr; + drvs->forwarded_packets = rxf_stats->forwarded_packets; + drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu; + drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr; + drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags; + adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops; + if (be_roce_supported(adapter)) { + drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd; + drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd; + drvs->rx_roce_frames = port_stats->roce_frames_received; + drvs->roce_drops_crc = port_stats->roce_drops_crc; + drvs->roce_drops_payload_len = + port_stats->roce_drops_payload_len; + } +} + +static void populate_lancer_stats(struct be_adapter *adapter) +{ + struct be_drv_stats *drvs = &adapter->drv_stats; + struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter); + + be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats)); + drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo; + drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo; + drvs->rx_control_frames = pport_stats->rx_control_frames_lo; + drvs->rx_in_range_errors = pport_stats->rx_in_range_errors; + drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo; + drvs->rx_dropped_runt = pport_stats->rx_dropped_runt; + drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors; + drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors; + drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors; + drvs->rx_dropped_tcp_length = + pport_stats->rx_dropped_invalid_tcp_length; + drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small; + drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short; + drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors; + drvs->rx_dropped_header_too_small = + pport_stats->rx_dropped_header_too_small; + drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow; + drvs->rx_address_filtered = + pport_stats->rx_address_filtered + + pport_stats->rx_vlan_filtered; + drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo; + drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow; + drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo; + drvs->tx_controlframes = pport_stats->tx_control_frames_lo; + drvs->jabber_events = pport_stats->rx_jabbers; + drvs->forwarded_packets = pport_stats->num_forwards_lo; + drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo; + drvs->rx_drops_too_many_frags = + pport_stats->rx_drops_too_many_frags_lo; +} + +static void accumulate_16bit_val(u32 *acc, u16 val) +{ +#define lo(x) (x & 0xFFFF) +#define hi(x) (x & 0xFFFF0000) + bool wrapped = val < lo(*acc); + u32 newacc = hi(*acc) + val; + + if (wrapped) + newacc += 65536; + WRITE_ONCE(*acc, newacc); +} + +static void populate_erx_stats(struct be_adapter *adapter, + struct be_rx_obj *rxo, u32 erx_stat) +{ + if (!BEx_chip(adapter)) + rx_stats(rxo)->rx_drops_no_frags = erx_stat; + else + /* below erx HW counter can actually wrap around after + * 65535. Driver accumulates a 32-bit value + */ + accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags, + (u16)erx_stat); +} + +void be_parse_stats(struct be_adapter *adapter) +{ + struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter); + struct be_rx_obj *rxo; + int i; + u32 erx_stat; + + if (lancer_chip(adapter)) { + populate_lancer_stats(adapter); + } else { + if (BE2_chip(adapter)) + populate_be_v0_stats(adapter); + else if (BE3_chip(adapter)) + /* for BE3 */ + populate_be_v1_stats(adapter); + else + populate_be_v2_stats(adapter); + + /* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */ + for_all_rx_queues(adapter, rxo, i) { + erx_stat = erx->rx_drops_no_fragments[rxo->q.id]; + populate_erx_stats(adapter, rxo, erx_stat); + } + } +} + +static void be_get_stats64(struct net_device *netdev, + struct rtnl_link_stats64 *stats) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_drv_stats *drvs = &adapter->drv_stats; + struct be_rx_obj *rxo; + struct be_tx_obj *txo; + u64 pkts, bytes; + unsigned int start; + int i; + + for_all_rx_queues(adapter, rxo, i) { + const struct be_rx_stats *rx_stats = rx_stats(rxo); + + do { + start = u64_stats_fetch_begin_irq(&rx_stats->sync); + pkts = rx_stats(rxo)->rx_pkts; + bytes = rx_stats(rxo)->rx_bytes; + } while (u64_stats_fetch_retry_irq(&rx_stats->sync, start)); + stats->rx_packets += pkts; + stats->rx_bytes += bytes; + stats->multicast += rx_stats(rxo)->rx_mcast_pkts; + stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs + + rx_stats(rxo)->rx_drops_no_frags; + } + + for_all_tx_queues(adapter, txo, i) { + const struct be_tx_stats *tx_stats = tx_stats(txo); + + do { + start = u64_stats_fetch_begin_irq(&tx_stats->sync); + pkts = tx_stats(txo)->tx_pkts; + bytes = tx_stats(txo)->tx_bytes; + } while (u64_stats_fetch_retry_irq(&tx_stats->sync, start)); + stats->tx_packets += pkts; + stats->tx_bytes += bytes; + } + + /* bad pkts received */ + stats->rx_errors = drvs->rx_crc_errors + + drvs->rx_alignment_symbol_errors + + drvs->rx_in_range_errors + + drvs->rx_out_range_errors + + drvs->rx_frame_too_long + + drvs->rx_dropped_too_small + + drvs->rx_dropped_too_short + + drvs->rx_dropped_header_too_small + + drvs->rx_dropped_tcp_length + + drvs->rx_dropped_runt; + + /* detailed rx errors */ + stats->rx_length_errors = drvs->rx_in_range_errors + + drvs->rx_out_range_errors + + drvs->rx_frame_too_long; + + stats->rx_crc_errors = drvs->rx_crc_errors; + + /* frame alignment errors */ + stats->rx_frame_errors = drvs->rx_alignment_symbol_errors; + + /* receiver fifo overrun */ + /* drops_no_pbuf is no per i/f, it's per BE card */ + stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop + + drvs->rx_input_fifo_overflow_drop + + drvs->rx_drops_no_pbuf; +} + +void be_link_status_update(struct be_adapter *adapter, u8 link_status) +{ + struct net_device *netdev = adapter->netdev; + + if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) { + netif_carrier_off(netdev); + adapter->flags |= BE_FLAGS_LINK_STATUS_INIT; + } + + if (link_status) + netif_carrier_on(netdev); + else + netif_carrier_off(netdev); + + netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down"); +} + +static int be_gso_hdr_len(struct sk_buff *skb) +{ + if (skb->encapsulation) + return skb_inner_transport_offset(skb) + + inner_tcp_hdrlen(skb); + return skb_transport_offset(skb) + tcp_hdrlen(skb); +} + +static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb) +{ + struct be_tx_stats *stats = tx_stats(txo); + u32 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1; + /* Account for headers which get duplicated in TSO pkt */ + u32 dup_hdr_len = tx_pkts > 1 ? be_gso_hdr_len(skb) * (tx_pkts - 1) : 0; + + u64_stats_update_begin(&stats->sync); + stats->tx_reqs++; + stats->tx_bytes += skb->len + dup_hdr_len; + stats->tx_pkts += tx_pkts; + if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL) + stats->tx_vxlan_offload_pkts += tx_pkts; + u64_stats_update_end(&stats->sync); +} + +/* Returns number of WRBs needed for the skb */ +static u32 skb_wrb_cnt(struct sk_buff *skb) +{ + /* +1 for the header wrb */ + return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags; +} + +static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len) +{ + wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr)); + wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr)); + wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK); + wrb->rsvd0 = 0; +} + +/* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb + * to avoid the swap and shift/mask operations in wrb_fill(). + */ +static inline void wrb_fill_dummy(struct be_eth_wrb *wrb) +{ + wrb->frag_pa_hi = 0; + wrb->frag_pa_lo = 0; + wrb->frag_len = 0; + wrb->rsvd0 = 0; +} + +static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter, + struct sk_buff *skb) +{ + u8 vlan_prio; + u16 vlan_tag; + + vlan_tag = skb_vlan_tag_get(skb); + vlan_prio = (vlan_tag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; + /* If vlan priority provided by OS is NOT in available bmap */ + if (!(adapter->vlan_prio_bmap & (1 << vlan_prio))) + vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) | + adapter->recommended_prio_bits; + + return vlan_tag; +} + +/* Used only for IP tunnel packets */ +static u16 skb_inner_ip_proto(struct sk_buff *skb) +{ + return (inner_ip_hdr(skb)->version == 4) ? + inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr; +} + +static u16 skb_ip_proto(struct sk_buff *skb) +{ + return (ip_hdr(skb)->version == 4) ? + ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr; +} + +static inline bool be_is_txq_full(struct be_tx_obj *txo) +{ + return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len; +} + +static inline bool be_can_txq_wake(struct be_tx_obj *txo) +{ + return atomic_read(&txo->q.used) < txo->q.len / 2; +} + +static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo) +{ + return atomic_read(&txo->q.used) > txo->pend_wrb_cnt; +} + +static void be_get_wrb_params_from_skb(struct be_adapter *adapter, + struct sk_buff *skb, + struct be_wrb_params *wrb_params) +{ + u16 proto; + + if (skb_is_gso(skb)) { + BE_WRB_F_SET(wrb_params->features, LSO, 1); + wrb_params->lso_mss = skb_shinfo(skb)->gso_size; + if (skb_is_gso_v6(skb) && !lancer_chip(adapter)) + BE_WRB_F_SET(wrb_params->features, LSO6, 1); + } else if (skb->ip_summed == CHECKSUM_PARTIAL) { + if (skb->encapsulation) { + BE_WRB_F_SET(wrb_params->features, IPCS, 1); + proto = skb_inner_ip_proto(skb); + } else { + proto = skb_ip_proto(skb); + } + if (proto == IPPROTO_TCP) + BE_WRB_F_SET(wrb_params->features, TCPCS, 1); + else if (proto == IPPROTO_UDP) + BE_WRB_F_SET(wrb_params->features, UDPCS, 1); + } + + if (skb_vlan_tag_present(skb)) { + BE_WRB_F_SET(wrb_params->features, VLAN, 1); + wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb); + } + + BE_WRB_F_SET(wrb_params->features, CRC, 1); +} + +static void wrb_fill_hdr(struct be_adapter *adapter, + struct be_eth_hdr_wrb *hdr, + struct be_wrb_params *wrb_params, + struct sk_buff *skb) +{ + memset(hdr, 0, sizeof(*hdr)); + + SET_TX_WRB_HDR_BITS(crc, hdr, + BE_WRB_F_GET(wrb_params->features, CRC)); + SET_TX_WRB_HDR_BITS(ipcs, hdr, + BE_WRB_F_GET(wrb_params->features, IPCS)); + SET_TX_WRB_HDR_BITS(tcpcs, hdr, + BE_WRB_F_GET(wrb_params->features, TCPCS)); + SET_TX_WRB_HDR_BITS(udpcs, hdr, + BE_WRB_F_GET(wrb_params->features, UDPCS)); + + SET_TX_WRB_HDR_BITS(lso, hdr, + BE_WRB_F_GET(wrb_params->features, LSO)); + SET_TX_WRB_HDR_BITS(lso6, hdr, + BE_WRB_F_GET(wrb_params->features, LSO6)); + SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss); + + /* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this + * hack is not needed, the evt bit is set while ringing DB. + */ + SET_TX_WRB_HDR_BITS(event, hdr, + BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW)); + SET_TX_WRB_HDR_BITS(vlan, hdr, + BE_WRB_F_GET(wrb_params->features, VLAN)); + SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag); + + SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb)); + SET_TX_WRB_HDR_BITS(len, hdr, skb->len); + SET_TX_WRB_HDR_BITS(mgmt, hdr, + BE_WRB_F_GET(wrb_params->features, OS2BMC)); +} + +static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb, + bool unmap_single) +{ + dma_addr_t dma; + u32 frag_len = le32_to_cpu(wrb->frag_len); + + + dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 | + (u64)le32_to_cpu(wrb->frag_pa_lo); + if (frag_len) { + if (unmap_single) + dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE); + else + dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE); + } +} + +/* Grab a WRB header for xmit */ +static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo) +{ + u32 head = txo->q.head; + + queue_head_inc(&txo->q); + return head; +} + +/* Set up the WRB header for xmit */ +static void be_tx_setup_wrb_hdr(struct be_adapter *adapter, + struct be_tx_obj *txo, + struct be_wrb_params *wrb_params, + struct sk_buff *skb, u16 head) +{ + u32 num_frags = skb_wrb_cnt(skb); + struct be_queue_info *txq = &txo->q; + struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head); + + wrb_fill_hdr(adapter, hdr, wrb_params, skb); + be_dws_cpu_to_le(hdr, sizeof(*hdr)); + + BUG_ON(txo->sent_skb_list[head]); + txo->sent_skb_list[head] = skb; + txo->last_req_hdr = head; + atomic_add(num_frags, &txq->used); + txo->last_req_wrb_cnt = num_frags; + txo->pend_wrb_cnt += num_frags; +} + +/* Setup a WRB fragment (buffer descriptor) for xmit */ +static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr, + int len) +{ + struct be_eth_wrb *wrb; + struct be_queue_info *txq = &txo->q; + + wrb = queue_head_node(txq); + wrb_fill(wrb, busaddr, len); + queue_head_inc(txq); +} + +/* Bring the queue back to the state it was in before be_xmit_enqueue() routine + * was invoked. The producer index is restored to the previous packet and the + * WRBs of the current packet are unmapped. Invoked to handle tx setup errors. + */ +static void be_xmit_restore(struct be_adapter *adapter, + struct be_tx_obj *txo, u32 head, bool map_single, + u32 copied) +{ + struct device *dev; + struct be_eth_wrb *wrb; + struct be_queue_info *txq = &txo->q; + + dev = &adapter->pdev->dev; + txq->head = head; + + /* skip the first wrb (hdr); it's not mapped */ + queue_head_inc(txq); + while (copied) { + wrb = queue_head_node(txq); + unmap_tx_frag(dev, wrb, map_single); + map_single = false; + copied -= le32_to_cpu(wrb->frag_len); + queue_head_inc(txq); + } + + txq->head = head; +} + +/* Enqueue the given packet for transmit. This routine allocates WRBs for the + * packet, dma maps the packet buffers and sets up the WRBs. Returns the number + * of WRBs used up by the packet. + */ +static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo, + struct sk_buff *skb, + struct be_wrb_params *wrb_params) +{ + u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb); + struct device *dev = &adapter->pdev->dev; + bool map_single = false; + u32 head; + dma_addr_t busaddr; + int len; + + head = be_tx_get_wrb_hdr(txo); + + if (skb->len > skb->data_len) { + len = skb_headlen(skb); + + busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE); + if (dma_mapping_error(dev, busaddr)) + goto dma_err; + map_single = true; + be_tx_setup_wrb_frag(txo, busaddr, len); + copied += len; + } + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; + len = skb_frag_size(frag); + + busaddr = skb_frag_dma_map(dev, frag, 0, len, DMA_TO_DEVICE); + if (dma_mapping_error(dev, busaddr)) + goto dma_err; + be_tx_setup_wrb_frag(txo, busaddr, len); + copied += len; + } + + be_tx_setup_wrb_hdr(adapter, txo, wrb_params, skb, head); + + be_tx_stats_update(txo, skb); + return wrb_cnt; + +dma_err: + adapter->drv_stats.dma_map_errors++; + be_xmit_restore(adapter, txo, head, map_single, copied); + return 0; +} + +static inline int qnq_async_evt_rcvd(struct be_adapter *adapter) +{ + return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD; +} + +static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter, + struct sk_buff *skb, + struct be_wrb_params + *wrb_params) +{ + u16 vlan_tag = 0; + + skb = skb_share_check(skb, GFP_ATOMIC); + if (unlikely(!skb)) + return skb; + + if (skb_vlan_tag_present(skb)) + vlan_tag = be_get_tx_vlan_tag(adapter, skb); + + if (qnq_async_evt_rcvd(adapter) && adapter->pvid) { + if (!vlan_tag) + vlan_tag = adapter->pvid; + /* f/w workaround to set skip_hw_vlan = 1, informs the F/W to + * skip VLAN insertion + */ + BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1); + } + + if (vlan_tag) { + skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q), + vlan_tag); + if (unlikely(!skb)) + return skb; + skb->vlan_tci = 0; + } + + /* Insert the outer VLAN, if any */ + if (adapter->qnq_vid) { + vlan_tag = adapter->qnq_vid; + skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q), + vlan_tag); + if (unlikely(!skb)) + return skb; + BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1); + } + + return skb; +} + +static bool be_ipv6_exthdr_check(struct sk_buff *skb) +{ + struct ethhdr *eh = (struct ethhdr *)skb->data; + u16 offset = ETH_HLEN; + + if (eh->h_proto == htons(ETH_P_IPV6)) { + struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset); + + offset += sizeof(struct ipv6hdr); + if (ip6h->nexthdr != NEXTHDR_TCP && + ip6h->nexthdr != NEXTHDR_UDP) { + struct ipv6_opt_hdr *ehdr = + (struct ipv6_opt_hdr *)(skb->data + offset); + + /* offending pkt: 2nd byte following IPv6 hdr is 0xff */ + if (ehdr->hdrlen == 0xff) + return true; + } + } + return false; +} + +static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb) +{ + return skb_vlan_tag_present(skb) || adapter->pvid || adapter->qnq_vid; +} + +static int be_ipv6_tx_stall_chk(struct be_adapter *adapter, struct sk_buff *skb) +{ + return BE3_chip(adapter) && be_ipv6_exthdr_check(skb); +} + +static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter, + struct sk_buff *skb, + struct be_wrb_params + *wrb_params) +{ + struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data; + unsigned int eth_hdr_len; + struct iphdr *ip; + + /* For padded packets, BE HW modifies tot_len field in IP header + * incorrecly when VLAN tag is inserted by HW. + * For padded packets, Lancer computes incorrect checksum. + */ + eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ? + VLAN_ETH_HLEN : ETH_HLEN; + if (skb->len <= 60 && + (lancer_chip(adapter) || skb_vlan_tag_present(skb)) && + is_ipv4_pkt(skb)) { + ip = (struct iphdr *)ip_hdr(skb); + pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len)); + } + + /* If vlan tag is already inlined in the packet, skip HW VLAN + * tagging in pvid-tagging mode + */ + if (be_pvid_tagging_enabled(adapter) && + veh->h_vlan_proto == htons(ETH_P_8021Q)) + BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1); + + /* HW has a bug wherein it will calculate CSUM for VLAN + * pkts even though it is disabled. + * Manually insert VLAN in pkt. + */ + if (skb->ip_summed != CHECKSUM_PARTIAL && + skb_vlan_tag_present(skb)) { + skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params); + if (unlikely(!skb)) + goto err; + } + + /* HW may lockup when VLAN HW tagging is requested on + * certain ipv6 packets. Drop such pkts if the HW workaround to + * skip HW tagging is not enabled by FW. + */ + if (unlikely(be_ipv6_tx_stall_chk(adapter, skb) && + (adapter->pvid || adapter->qnq_vid) && + !qnq_async_evt_rcvd(adapter))) + goto tx_drop; + + /* Manual VLAN tag insertion to prevent: + * ASIC lockup when the ASIC inserts VLAN tag into + * certain ipv6 packets. Insert VLAN tags in driver, + * and set event, completion, vlan bits accordingly + * in the Tx WRB. + */ + if (be_ipv6_tx_stall_chk(adapter, skb) && + be_vlan_tag_tx_chk(adapter, skb)) { + skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params); + if (unlikely(!skb)) + goto err; + } + + return skb; +tx_drop: + dev_kfree_skb_any(skb); +err: + return NULL; +} + +static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter, + struct sk_buff *skb, + struct be_wrb_params *wrb_params) +{ + int err; + + /* Lancer, SH and BE3 in SRIOV mode have a bug wherein + * packets that are 32b or less may cause a transmit stall + * on that port. The workaround is to pad such packets + * (len <= 32 bytes) to a minimum length of 36b. + */ + if (skb->len <= 32) { + if (skb_put_padto(skb, 36)) + return NULL; + } + + if (BEx_chip(adapter) || lancer_chip(adapter)) { + skb = be_lancer_xmit_workarounds(adapter, skb, wrb_params); + if (!skb) + return NULL; + } + + /* The stack can send us skbs with length greater than + * what the HW can handle. Trim the extra bytes. + */ + WARN_ON_ONCE(skb->len > BE_MAX_GSO_SIZE); + err = pskb_trim(skb, BE_MAX_GSO_SIZE); + WARN_ON(err); + + return skb; +} + +static void be_xmit_flush(struct be_adapter *adapter, struct be_tx_obj *txo) +{ + struct be_queue_info *txq = &txo->q; + struct be_eth_hdr_wrb *hdr = queue_index_node(txq, txo->last_req_hdr); + + /* Mark the last request eventable if it hasn't been marked already */ + if (!(hdr->dw[2] & cpu_to_le32(TX_HDR_WRB_EVT))) + hdr->dw[2] |= cpu_to_le32(TX_HDR_WRB_EVT | TX_HDR_WRB_COMPL); + + /* compose a dummy wrb if there are odd set of wrbs to notify */ + if (!lancer_chip(adapter) && (txo->pend_wrb_cnt & 1)) { + wrb_fill_dummy(queue_head_node(txq)); + queue_head_inc(txq); + atomic_inc(&txq->used); + txo->pend_wrb_cnt++; + hdr->dw[2] &= ~cpu_to_le32(TX_HDR_WRB_NUM_MASK << + TX_HDR_WRB_NUM_SHIFT); + hdr->dw[2] |= cpu_to_le32((txo->last_req_wrb_cnt + 1) << + TX_HDR_WRB_NUM_SHIFT); + } + be_txq_notify(adapter, txo, txo->pend_wrb_cnt); + txo->pend_wrb_cnt = 0; +} + +/* OS2BMC related */ + +#define DHCP_CLIENT_PORT 68 +#define DHCP_SERVER_PORT 67 +#define NET_BIOS_PORT1 137 +#define NET_BIOS_PORT2 138 +#define DHCPV6_RAS_PORT 547 + +#define is_mc_allowed_on_bmc(adapter, eh) \ + (!is_multicast_filt_enabled(adapter) && \ + is_multicast_ether_addr(eh->h_dest) && \ + !is_broadcast_ether_addr(eh->h_dest)) + +#define is_bc_allowed_on_bmc(adapter, eh) \ + (!is_broadcast_filt_enabled(adapter) && \ + is_broadcast_ether_addr(eh->h_dest)) + +#define is_arp_allowed_on_bmc(adapter, skb) \ + (is_arp(skb) && is_arp_filt_enabled(adapter)) + +#define is_broadcast_packet(eh, adapter) \ + (is_multicast_ether_addr(eh->h_dest) && \ + !compare_ether_addr(eh->h_dest, adapter->netdev->broadcast)) + +#define is_arp(skb) (skb->protocol == htons(ETH_P_ARP)) + +#define is_arp_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & (BMC_FILT_BROADCAST_ARP)) + +#define is_dhcp_client_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_CLIENT) + +#define is_dhcp_srvr_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_SERVER) + +#define is_nbios_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_NET_BIOS) + +#define is_ipv6_na_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & \ + BMC_FILT_MULTICAST_IPV6_NEIGH_ADVER) + +#define is_ipv6_ra_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RA) + +#define is_ipv6_ras_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RAS) + +#define is_broadcast_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & BMC_FILT_BROADCAST) + +#define is_multicast_filt_enabled(adapter) \ + (adapter->bmc_filt_mask & BMC_FILT_MULTICAST) + +static bool be_send_pkt_to_bmc(struct be_adapter *adapter, + struct sk_buff **skb) +{ + struct ethhdr *eh = (struct ethhdr *)(*skb)->data; + bool os2bmc = false; + + if (!be_is_os2bmc_enabled(adapter)) + goto done; + + if (!is_multicast_ether_addr(eh->h_dest)) + goto done; + + if (is_mc_allowed_on_bmc(adapter, eh) || + is_bc_allowed_on_bmc(adapter, eh) || + is_arp_allowed_on_bmc(adapter, (*skb))) { + os2bmc = true; + goto done; + } + + if ((*skb)->protocol == htons(ETH_P_IPV6)) { + struct ipv6hdr *hdr = ipv6_hdr((*skb)); + u8 nexthdr = hdr->nexthdr; + + if (nexthdr == IPPROTO_ICMPV6) { + struct icmp6hdr *icmp6 = icmp6_hdr((*skb)); + + switch (icmp6->icmp6_type) { + case NDISC_ROUTER_ADVERTISEMENT: + os2bmc = is_ipv6_ra_filt_enabled(adapter); + goto done; + case NDISC_NEIGHBOUR_ADVERTISEMENT: + os2bmc = is_ipv6_na_filt_enabled(adapter); + goto done; + default: + break; + } + } + } + + if (is_udp_pkt((*skb))) { + struct udphdr *udp = udp_hdr((*skb)); + + switch (ntohs(udp->dest)) { + case DHCP_CLIENT_PORT: + os2bmc = is_dhcp_client_filt_enabled(adapter); + goto done; + case DHCP_SERVER_PORT: + os2bmc = is_dhcp_srvr_filt_enabled(adapter); + goto done; + case NET_BIOS_PORT1: + case NET_BIOS_PORT2: + os2bmc = is_nbios_filt_enabled(adapter); + goto done; + case DHCPV6_RAS_PORT: + os2bmc = is_ipv6_ras_filt_enabled(adapter); + goto done; + default: + break; + } + } +done: + /* For packets over a vlan, which are destined + * to BMC, asic expects the vlan to be inline in the packet. + */ + if (os2bmc) + *skb = be_insert_vlan_in_pkt(adapter, *skb, NULL); + + return os2bmc; +} + +static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev) +{ + struct be_adapter *adapter = netdev_priv(netdev); + u16 q_idx = skb_get_queue_mapping(skb); + struct be_tx_obj *txo = &adapter->tx_obj[q_idx]; + struct be_wrb_params wrb_params = { 0 }; + bool flush = !skb->xmit_more; + u16 wrb_cnt; + + skb = be_xmit_workarounds(adapter, skb, &wrb_params); + if (unlikely(!skb)) + goto drop; + + be_get_wrb_params_from_skb(adapter, skb, &wrb_params); + + wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params); + if (unlikely(!wrb_cnt)) { + dev_kfree_skb_any(skb); + goto drop; + } + + /* if os2bmc is enabled and if the pkt is destined to bmc, + * enqueue the pkt a 2nd time with mgmt bit set. + */ + if (be_send_pkt_to_bmc(adapter, &skb)) { + BE_WRB_F_SET(wrb_params.features, OS2BMC, 1); + wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params); + if (unlikely(!wrb_cnt)) + goto drop; + else + skb_get(skb); + } + + if (be_is_txq_full(txo)) { + netif_stop_subqueue(netdev, q_idx); + tx_stats(txo)->tx_stops++; + } + + if (flush || __netif_subqueue_stopped(netdev, q_idx)) + be_xmit_flush(adapter, txo); + + return NETDEV_TX_OK; +drop: + tx_stats(txo)->tx_drv_drops++; + /* Flush the already enqueued tx requests */ + if (flush && txo->pend_wrb_cnt) + be_xmit_flush(adapter, txo); + + return NETDEV_TX_OK; +} + +static void be_tx_timeout(struct net_device *netdev) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct device *dev = &adapter->pdev->dev; + struct be_tx_obj *txo; + struct sk_buff *skb; + struct tcphdr *tcphdr; + struct udphdr *udphdr; + u32 *entry; + int status; + int i, j; + + for_all_tx_queues(adapter, txo, i) { + dev_info(dev, "TXQ Dump: %d H: %d T: %d used: %d, qid: 0x%x\n", + i, txo->q.head, txo->q.tail, + atomic_read(&txo->q.used), txo->q.id); + + entry = txo->q.dma_mem.va; + for (j = 0; j < TX_Q_LEN * 4; j += 4) { + if (entry[j] != 0 || entry[j + 1] != 0 || + entry[j + 2] != 0 || entry[j + 3] != 0) { + dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n", + j, entry[j], entry[j + 1], + entry[j + 2], entry[j + 3]); + } + } + + entry = txo->cq.dma_mem.va; + dev_info(dev, "TXCQ Dump: %d H: %d T: %d used: %d\n", + i, txo->cq.head, txo->cq.tail, + atomic_read(&txo->cq.used)); + for (j = 0; j < TX_CQ_LEN * 4; j += 4) { + if (entry[j] != 0 || entry[j + 1] != 0 || + entry[j + 2] != 0 || entry[j + 3] != 0) { + dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n", + j, entry[j], entry[j + 1], + entry[j + 2], entry[j + 3]); + } + } + + for (j = 0; j < TX_Q_LEN; j++) { + if (txo->sent_skb_list[j]) { + skb = txo->sent_skb_list[j]; + if (ip_hdr(skb)->protocol == IPPROTO_TCP) { + tcphdr = tcp_hdr(skb); + dev_info(dev, "TCP source port %d\n", + ntohs(tcphdr->source)); + dev_info(dev, "TCP dest port %d\n", + ntohs(tcphdr->dest)); + dev_info(dev, "TCP sequence num %d\n", + ntohs(tcphdr->seq)); + dev_info(dev, "TCP ack_seq %d\n", + ntohs(tcphdr->ack_seq)); + } else if (ip_hdr(skb)->protocol == + IPPROTO_UDP) { + udphdr = udp_hdr(skb); + dev_info(dev, "UDP source port %d\n", + ntohs(udphdr->source)); + dev_info(dev, "UDP dest port %d\n", + ntohs(udphdr->dest)); + } + dev_info(dev, "skb[%d] %p len %d proto 0x%x\n", + j, skb, skb->len, skb->protocol); + } + } + } + + if (lancer_chip(adapter)) { + dev_info(dev, "Initiating reset due to tx timeout\n"); + dev_info(dev, "Resetting adapter\n"); + status = lancer_physdev_ctrl(adapter, + PHYSDEV_CONTROL_FW_RESET_MASK); + if (status) + dev_err(dev, "Reset failed .. Reboot server\n"); + } +} + +static inline bool be_in_all_promisc(struct be_adapter *adapter) +{ + return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) == + BE_IF_FLAGS_ALL_PROMISCUOUS; +} + +static int be_set_vlan_promisc(struct be_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + int status; + + if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) + return 0; + + status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON); + if (!status) { + dev_info(dev, "Enabled VLAN promiscuous mode\n"); + adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS; + } else { + dev_err(dev, "Failed to enable VLAN promiscuous mode\n"); + } + return status; +} + +static int be_clear_vlan_promisc(struct be_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + int status; + + status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF); + if (!status) { + dev_info(dev, "Disabling VLAN promiscuous mode\n"); + adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS; + } + return status; +} + +/* + * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE. + * If the user configures more, place BE in vlan promiscuous mode. + */ +static int be_vid_config(struct be_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + u16 vids[BE_NUM_VLANS_SUPPORTED]; + u16 num = 0, i = 0; + int status = 0; + + /* No need to change the VLAN state if the I/F is in promiscuous */ + if (adapter->netdev->flags & IFF_PROMISC) + return 0; + + if (adapter->vlans_added > be_max_vlans(adapter)) + return be_set_vlan_promisc(adapter); + + if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) { + status = be_clear_vlan_promisc(adapter); + if (status) + return status; + } + /* Construct VLAN Table to give to HW */ + for_each_set_bit(i, adapter->vids, VLAN_N_VID) + vids[num++] = cpu_to_le16(i); + + status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0); + if (status) { + dev_err(dev, "Setting HW VLAN filtering failed\n"); + /* Set to VLAN promisc mode as setting VLAN filter failed */ + if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS || + addl_status(status) == + MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES) + return be_set_vlan_promisc(adapter); + } + return status; +} + +static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid) +{ + struct be_adapter *adapter = netdev_priv(netdev); + int status = 0; + + mutex_lock(&adapter->rx_filter_lock); + + /* Packets with VID 0 are always received by Lancer by default */ + if (lancer_chip(adapter) && vid == 0) + goto done; + + if (test_bit(vid, adapter->vids)) + goto done; + + set_bit(vid, adapter->vids); + adapter->vlans_added++; + + status = be_vid_config(adapter); +done: + mutex_unlock(&adapter->rx_filter_lock); + return status; +} + +static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid) +{ + struct be_adapter *adapter = netdev_priv(netdev); + int status = 0; + + mutex_lock(&adapter->rx_filter_lock); + + /* Packets with VID 0 are always received by Lancer by default */ + if (lancer_chip(adapter) && vid == 0) + goto done; + + if (!test_bit(vid, adapter->vids)) + goto done; + + clear_bit(vid, adapter->vids); + adapter->vlans_added--; + + status = be_vid_config(adapter); +done: + mutex_unlock(&adapter->rx_filter_lock); + return status; +} + +static void be_set_all_promisc(struct be_adapter *adapter) +{ + be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON); + adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS; +} + +static void be_set_mc_promisc(struct be_adapter *adapter) +{ + int status; + + if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS) + return; + + status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON); + if (!status) + adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS; +} + +static void be_set_uc_promisc(struct be_adapter *adapter) +{ + int status; + + if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS) + return; + + status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, ON); + if (!status) + adapter->if_flags |= BE_IF_FLAGS_PROMISCUOUS; +} + +static void be_clear_uc_promisc(struct be_adapter *adapter) +{ + int status; + + if (!(adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS)) + return; + + status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, OFF); + if (!status) + adapter->if_flags &= ~BE_IF_FLAGS_PROMISCUOUS; +} + +/* The below 2 functions are the callback args for __dev_mc_sync/dev_uc_sync(). + * We use a single callback function for both sync and unsync. We really don't + * add/remove addresses through this callback. But, we use it to detect changes + * to the uc/mc lists. The entire uc/mc list is programmed in be_set_rx_mode(). + */ +static int be_uc_list_update(struct net_device *netdev, + const unsigned char *addr) +{ + struct be_adapter *adapter = netdev_priv(netdev); + + adapter->update_uc_list = true; + return 0; +} + +static int be_mc_list_update(struct net_device *netdev, + const unsigned char *addr) +{ + struct be_adapter *adapter = netdev_priv(netdev); + + adapter->update_mc_list = true; + return 0; +} + +static void be_set_mc_list(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct netdev_hw_addr *ha; + bool mc_promisc = false; + int status; + + netif_addr_lock_bh(netdev); + __dev_mc_sync(netdev, be_mc_list_update, be_mc_list_update); + + if (netdev->flags & IFF_PROMISC) { + adapter->update_mc_list = false; + } else if (netdev->flags & IFF_ALLMULTI || + netdev_mc_count(netdev) > be_max_mc(adapter)) { + /* Enable multicast promisc if num configured exceeds + * what we support + */ + mc_promisc = true; + adapter->update_mc_list = false; + } else if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS) { + /* Update mc-list unconditionally if the iface was previously + * in mc-promisc mode and now is out of that mode. + */ + adapter->update_mc_list = true; + } + + if (adapter->update_mc_list) { + int i = 0; + + /* cache the mc-list in adapter */ + netdev_for_each_mc_addr(ha, netdev) { + ether_addr_copy(adapter->mc_list[i].mac, ha->addr); + i++; + } + adapter->mc_count = netdev_mc_count(netdev); + } + netif_addr_unlock_bh(netdev); + + if (mc_promisc) { + be_set_mc_promisc(adapter); + } else if (adapter->update_mc_list) { + status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON); + if (!status) + adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS; + else + be_set_mc_promisc(adapter); + + adapter->update_mc_list = false; + } +} + +static void be_clear_mc_list(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + + __dev_mc_unsync(netdev, NULL); + be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, OFF); + adapter->mc_count = 0; +} + +static int be_uc_mac_add(struct be_adapter *adapter, int uc_idx) +{ + if (ether_addr_equal(adapter->uc_list[uc_idx].mac, adapter->dev_mac)) { + adapter->pmac_id[uc_idx + 1] = adapter->pmac_id[0]; + return 0; + } + + return be_cmd_pmac_add(adapter, adapter->uc_list[uc_idx].mac, + adapter->if_handle, + &adapter->pmac_id[uc_idx + 1], 0); +} + +static void be_uc_mac_del(struct be_adapter *adapter, int pmac_id) +{ + if (pmac_id == adapter->pmac_id[0]) + return; + + be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0); +} + +static void be_set_uc_list(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct netdev_hw_addr *ha; + bool uc_promisc = false; + int curr_uc_macs = 0, i; + + netif_addr_lock_bh(netdev); + __dev_uc_sync(netdev, be_uc_list_update, be_uc_list_update); + + if (netdev->flags & IFF_PROMISC) { + adapter->update_uc_list = false; + } else if (netdev_uc_count(netdev) > (be_max_uc(adapter) - 1)) { + uc_promisc = true; + adapter->update_uc_list = false; + } else if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS) { + /* Update uc-list unconditionally if the iface was previously + * in uc-promisc mode and now is out of that mode. + */ + adapter->update_uc_list = true; + } + + if (adapter->update_uc_list) { + /* cache the uc-list in adapter array */ + i = 0; + netdev_for_each_uc_addr(ha, netdev) { + ether_addr_copy(adapter->uc_list[i].mac, ha->addr); + i++; + } + curr_uc_macs = netdev_uc_count(netdev); + } + netif_addr_unlock_bh(netdev); + + if (uc_promisc) { + be_set_uc_promisc(adapter); + } else if (adapter->update_uc_list) { + be_clear_uc_promisc(adapter); + + for (i = 0; i < adapter->uc_macs; i++) + be_uc_mac_del(adapter, adapter->pmac_id[i + 1]); + + for (i = 0; i < curr_uc_macs; i++) + be_uc_mac_add(adapter, i); + adapter->uc_macs = curr_uc_macs; + adapter->update_uc_list = false; + } +} + +static void be_clear_uc_list(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + int i; + + __dev_uc_unsync(netdev, NULL); + for (i = 0; i < adapter->uc_macs; i++) + be_uc_mac_del(adapter, adapter->pmac_id[i + 1]); + + adapter->uc_macs = 0; +} + +static void __be_set_rx_mode(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + + mutex_lock(&adapter->rx_filter_lock); + + if (netdev->flags & IFF_PROMISC) { + if (!be_in_all_promisc(adapter)) + be_set_all_promisc(adapter); + } else if (be_in_all_promisc(adapter)) { + /* We need to re-program the vlan-list or clear + * vlan-promisc mode (if needed) when the interface + * comes out of promisc mode. + */ + be_vid_config(adapter); + } + + be_set_uc_list(adapter); + be_set_mc_list(adapter); + + mutex_unlock(&adapter->rx_filter_lock); +} + +static void be_work_set_rx_mode(struct work_struct *work) +{ + struct be_cmd_work *cmd_work = + container_of(work, struct be_cmd_work, work); + + __be_set_rx_mode(cmd_work->adapter); + kfree(cmd_work); +} + +static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf]; + int status; + + if (!sriov_enabled(adapter)) + return -EPERM; + + if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs) + return -EINVAL; + + /* Proceed further only if user provided MAC is different + * from active MAC + */ + if (ether_addr_equal(mac, vf_cfg->mac_addr)) + return 0; + + if (BEx_chip(adapter)) { + be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id, + vf + 1); + + status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle, + &vf_cfg->pmac_id, vf + 1); + } else { + status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle, + vf + 1); + } + + if (status) { + dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x", + mac, vf, status); + return be_cmd_status(status); + } + + ether_addr_copy(vf_cfg->mac_addr, mac); + + return 0; +} + +static int be_get_vf_config(struct net_device *netdev, int vf, + struct ifla_vf_info *vi) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf]; + + if (!sriov_enabled(adapter)) + return -EPERM; + + if (vf >= adapter->num_vfs) + return -EINVAL; + + vi->vf = vf; + vi->max_tx_rate = vf_cfg->tx_rate; + vi->min_tx_rate = 0; + vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK; + vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT; + memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN); + vi->linkstate = adapter->vf_cfg[vf].plink_tracking; + vi->spoofchk = adapter->vf_cfg[vf].spoofchk; + + return 0; +} + +static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan) +{ + struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf]; + u16 vids[BE_NUM_VLANS_SUPPORTED]; + int vf_if_id = vf_cfg->if_handle; + int status; + + /* Enable Transparent VLAN Tagging */ + status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0); + if (status) + return status; + + /* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */ + vids[0] = 0; + status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1); + if (!status) + dev_info(&adapter->pdev->dev, + "Cleared guest VLANs on VF%d", vf); + + /* After TVT is enabled, disallow VFs to program VLAN filters */ + if (vf_cfg->privileges & BE_PRIV_FILTMGMT) { + status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges & + ~BE_PRIV_FILTMGMT, vf + 1); + if (!status) + vf_cfg->privileges &= ~BE_PRIV_FILTMGMT; + } + return 0; +} + +static int be_clear_vf_tvt(struct be_adapter *adapter, int vf) +{ + struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf]; + struct device *dev = &adapter->pdev->dev; + int status; + + /* Reset Transparent VLAN Tagging. */ + status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1, + vf_cfg->if_handle, 0, 0); + if (status) + return status; + + /* Allow VFs to program VLAN filtering */ + if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) { + status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges | + BE_PRIV_FILTMGMT, vf + 1); + if (!status) { + vf_cfg->privileges |= BE_PRIV_FILTMGMT; + dev_info(dev, "VF%d: FILTMGMT priv enabled", vf); + } + } + + dev_info(dev, + "Disable/re-enable i/f in VM to clear Transparent VLAN tag"); + return 0; +} + +static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos, + __be16 vlan_proto) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf]; + int status; + + if (!sriov_enabled(adapter)) + return -EPERM; + + if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7) + return -EINVAL; + + if (vlan_proto != htons(ETH_P_8021Q)) + return -EPROTONOSUPPORT; + + if (vlan || qos) { + vlan |= qos << VLAN_PRIO_SHIFT; + status = be_set_vf_tvt(adapter, vf, vlan); + } else { + status = be_clear_vf_tvt(adapter, vf); + } + + if (status) { + dev_err(&adapter->pdev->dev, + "VLAN %d config on VF %d failed : %#x\n", vlan, vf, + status); + return be_cmd_status(status); + } + + vf_cfg->vlan_tag = vlan; + return 0; +} + +static int be_set_vf_tx_rate(struct net_device *netdev, int vf, + int min_tx_rate, int max_tx_rate) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct device *dev = &adapter->pdev->dev; + int percent_rate, status = 0; + u16 link_speed = 0; + u8 link_status; + + if (!sriov_enabled(adapter)) + return -EPERM; + + if (vf >= adapter->num_vfs) + return -EINVAL; + + if (min_tx_rate) + return -EINVAL; + + if (!max_tx_rate) + goto config_qos; + + status = be_cmd_link_status_query(adapter, &link_speed, + &link_status, 0); + if (status) + goto err; + + if (!link_status) { + dev_err(dev, "TX-rate setting not allowed when link is down\n"); + status = -ENETDOWN; + goto err; + } + + if (max_tx_rate < 100 || max_tx_rate > link_speed) { + dev_err(dev, "TX-rate must be between 100 and %d Mbps\n", + link_speed); + status = -EINVAL; + goto err; + } + + /* On Skyhawk the QOS setting must be done only as a % value */ + percent_rate = link_speed / 100; + if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) { + dev_err(dev, "TX-rate must be a multiple of %d Mbps\n", + percent_rate); + status = -EINVAL; + goto err; + } + +config_qos: + status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1); + if (status) + goto err; + + adapter->vf_cfg[vf].tx_rate = max_tx_rate; + return 0; + +err: + dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n", + max_tx_rate, vf); + return be_cmd_status(status); +} + +static int be_set_vf_link_state(struct net_device *netdev, int vf, + int link_state) +{ + struct be_adapter *adapter = netdev_priv(netdev); + int status; + + if (!sriov_enabled(adapter)) + return -EPERM; + + if (vf >= adapter->num_vfs) + return -EINVAL; + + status = be_cmd_set_logical_link_config(adapter, link_state, vf+1); + if (status) { + dev_err(&adapter->pdev->dev, + "Link state change on VF %d failed: %#x\n", vf, status); + return be_cmd_status(status); + } + + adapter->vf_cfg[vf].plink_tracking = link_state; + + return 0; +} + +static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf]; + u8 spoofchk; + int status; + + if (!sriov_enabled(adapter)) + return -EPERM; + + if (vf >= adapter->num_vfs) + return -EINVAL; + + if (BEx_chip(adapter)) + return -EOPNOTSUPP; + + if (enable == vf_cfg->spoofchk) + return 0; + + spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK; + + status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle, + 0, spoofchk); + if (status) { + dev_err(&adapter->pdev->dev, + "Spoofchk change on VF %d failed: %#x\n", vf, status); + return be_cmd_status(status); + } + + vf_cfg->spoofchk = enable; + return 0; +} + +static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts, + ulong now) +{ + aic->rx_pkts_prev = rx_pkts; + aic->tx_reqs_prev = tx_pkts; + aic->jiffies = now; +} + +static int be_get_new_eqd(struct be_eq_obj *eqo) +{ + struct be_adapter *adapter = eqo->adapter; + int eqd, start; + struct be_aic_obj *aic; + struct be_rx_obj *rxo; + struct be_tx_obj *txo; + u64 rx_pkts = 0, tx_pkts = 0; + ulong now; + u32 pps, delta; + int i; + + aic = &adapter->aic_obj[eqo->idx]; + if (!aic->enable) { + if (aic->jiffies) + aic->jiffies = 0; + eqd = aic->et_eqd; + return eqd; + } + + for_all_rx_queues_on_eq(adapter, eqo, rxo, i) { + do { + start = u64_stats_fetch_begin_irq(&rxo->stats.sync); + rx_pkts += rxo->stats.rx_pkts; + } while (u64_stats_fetch_retry_irq(&rxo->stats.sync, start)); + } + + for_all_tx_queues_on_eq(adapter, eqo, txo, i) { + do { + start = u64_stats_fetch_begin_irq(&txo->stats.sync); + tx_pkts += txo->stats.tx_reqs; + } while (u64_stats_fetch_retry_irq(&txo->stats.sync, start)); + } + + /* Skip, if wrapped around or first calculation */ + now = jiffies; + if (!aic->jiffies || time_before(now, aic->jiffies) || + rx_pkts < aic->rx_pkts_prev || + tx_pkts < aic->tx_reqs_prev) { + be_aic_update(aic, rx_pkts, tx_pkts, now); + return aic->prev_eqd; + } + + delta = jiffies_to_msecs(now - aic->jiffies); + if (delta == 0) + return aic->prev_eqd; + + pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) + + (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta); + eqd = (pps / 15000) << 2; + + if (eqd < 8) + eqd = 0; + eqd = min_t(u32, eqd, aic->max_eqd); + eqd = max_t(u32, eqd, aic->min_eqd); + + be_aic_update(aic, rx_pkts, tx_pkts, now); + + return eqd; +} + +/* For Skyhawk-R only */ +static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo) +{ + struct be_adapter *adapter = eqo->adapter; + struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx]; + ulong now = jiffies; + int eqd; + u32 mult_enc; + + if (!aic->enable) + return 0; + + if (jiffies_to_msecs(now - aic->jiffies) < 1) + eqd = aic->prev_eqd; + else + eqd = be_get_new_eqd(eqo); + + if (eqd > 100) + mult_enc = R2I_DLY_ENC_1; + else if (eqd > 60) + mult_enc = R2I_DLY_ENC_2; + else if (eqd > 20) + mult_enc = R2I_DLY_ENC_3; + else + mult_enc = R2I_DLY_ENC_0; + + aic->prev_eqd = eqd; + + return mult_enc; +} + +void be_eqd_update(struct be_adapter *adapter, bool force_update) +{ + struct be_set_eqd set_eqd[MAX_EVT_QS]; + struct be_aic_obj *aic; + struct be_eq_obj *eqo; + int i, num = 0, eqd; + + for_all_evt_queues(adapter, eqo, i) { + aic = &adapter->aic_obj[eqo->idx]; + eqd = be_get_new_eqd(eqo); + if (force_update || eqd != aic->prev_eqd) { + set_eqd[num].delay_multiplier = (eqd * 65)/100; + set_eqd[num].eq_id = eqo->q.id; + aic->prev_eqd = eqd; + num++; + } + } + + if (num) + be_cmd_modify_eqd(adapter, set_eqd, num); +} + +static void be_rx_stats_update(struct be_rx_obj *rxo, + struct be_rx_compl_info *rxcp) +{ + struct be_rx_stats *stats = rx_stats(rxo); + + u64_stats_update_begin(&stats->sync); + stats->rx_compl++; + stats->rx_bytes += rxcp->pkt_size; + stats->rx_pkts++; + if (rxcp->tunneled) + stats->rx_vxlan_offload_pkts++; + if (rxcp->pkt_type == BE_MULTICAST_PACKET) + stats->rx_mcast_pkts++; + if (rxcp->err) + stats->rx_compl_err++; + u64_stats_update_end(&stats->sync); +} + +static inline bool csum_passed(struct be_rx_compl_info *rxcp) +{ + /* L4 checksum is not reliable for non TCP/UDP packets. + * Also ignore ipcksm for ipv6 pkts + */ + return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum && + (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err; +} + +static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo) +{ + struct be_adapter *adapter = rxo->adapter; + struct be_rx_page_info *rx_page_info; + struct be_queue_info *rxq = &rxo->q; + u32 frag_idx = rxq->tail; + + rx_page_info = &rxo->page_info_tbl[frag_idx]; + BUG_ON(!rx_page_info->page); + + if (rx_page_info->last_frag) { + dma_unmap_page(&adapter->pdev->dev, + dma_unmap_addr(rx_page_info, bus), + adapter->big_page_size, DMA_FROM_DEVICE); + rx_page_info->last_frag = false; + } else { + dma_sync_single_for_cpu(&adapter->pdev->dev, + dma_unmap_addr(rx_page_info, bus), + rx_frag_size, DMA_FROM_DEVICE); + } + + queue_tail_inc(rxq); + atomic_dec(&rxq->used); + return rx_page_info; +} + +/* Throwaway the data in the Rx completion */ +static void be_rx_compl_discard(struct be_rx_obj *rxo, + struct be_rx_compl_info *rxcp) +{ + struct be_rx_page_info *page_info; + u16 i, num_rcvd = rxcp->num_rcvd; + + for (i = 0; i < num_rcvd; i++) { + page_info = get_rx_page_info(rxo); + put_page(page_info->page); + memset(page_info, 0, sizeof(*page_info)); + } +} + +/* + * skb_fill_rx_data forms a complete skb for an ether frame + * indicated by rxcp. + */ +static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb, + struct be_rx_compl_info *rxcp) +{ + struct be_rx_page_info *page_info; + u16 i, j; + u16 hdr_len, curr_frag_len, remaining; + u8 *start; + + page_info = get_rx_page_info(rxo); + start = page_address(page_info->page) + page_info->page_offset; + prefetch(start); + + /* Copy data in the first descriptor of this completion */ + curr_frag_len = min(rxcp->pkt_size, rx_frag_size); + + skb->len = curr_frag_len; + if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */ + memcpy(skb->data, start, curr_frag_len); + /* Complete packet has now been moved to data */ + put_page(page_info->page); + skb->data_len = 0; + skb->tail += curr_frag_len; + } else { + hdr_len = ETH_HLEN; + memcpy(skb->data, start, hdr_len); + skb_shinfo(skb)->nr_frags = 1; + skb_frag_set_page(skb, 0, page_info->page); + skb_shinfo(skb)->frags[0].page_offset = + page_info->page_offset + hdr_len; + skb_frag_size_set(&skb_shinfo(skb)->frags[0], + curr_frag_len - hdr_len); + skb->data_len = curr_frag_len - hdr_len; + skb->truesize += rx_frag_size; + skb->tail += hdr_len; + } + page_info->page = NULL; + + if (rxcp->pkt_size <= rx_frag_size) { + BUG_ON(rxcp->num_rcvd != 1); + return; + } + + /* More frags present for this completion */ + remaining = rxcp->pkt_size - curr_frag_len; + for (i = 1, j = 0; i < rxcp->num_rcvd; i++) { + page_info = get_rx_page_info(rxo); + curr_frag_len = min(remaining, rx_frag_size); + + /* Coalesce all frags from the same physical page in one slot */ + if (page_info->page_offset == 0) { + /* Fresh page */ + j++; + skb_frag_set_page(skb, j, page_info->page); + skb_shinfo(skb)->frags[j].page_offset = + page_info->page_offset; + skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0); + skb_shinfo(skb)->nr_frags++; + } else { + put_page(page_info->page); + } + + skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len); + skb->len += curr_frag_len; + skb->data_len += curr_frag_len; + skb->truesize += rx_frag_size; + remaining -= curr_frag_len; + page_info->page = NULL; + } + BUG_ON(j > MAX_SKB_FRAGS); +} + +/* Process the RX completion indicated by rxcp when GRO is disabled */ +static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi, + struct be_rx_compl_info *rxcp) +{ + struct be_adapter *adapter = rxo->adapter; + struct net_device *netdev = adapter->netdev; + struct sk_buff *skb; + + skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE); + if (unlikely(!skb)) { + rx_stats(rxo)->rx_drops_no_skbs++; + be_rx_compl_discard(rxo, rxcp); + return; + } + + skb_fill_rx_data(rxo, skb, rxcp); + + if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp))) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb_checksum_none_assert(skb); + + skb->protocol = eth_type_trans(skb, netdev); + skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]); + if (netdev->features & NETIF_F_RXHASH) + skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3); + + skb->csum_level = rxcp->tunneled; + skb_mark_napi_id(skb, napi); + + if (rxcp->vlanf) + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag); + + netif_receive_skb(skb); +} + +/* Process the RX completion indicated by rxcp when GRO is enabled */ +static void be_rx_compl_process_gro(struct be_rx_obj *rxo, + struct napi_struct *napi, + struct be_rx_compl_info *rxcp) +{ + struct be_adapter *adapter = rxo->adapter; + struct be_rx_page_info *page_info; + struct sk_buff *skb = NULL; + u16 remaining, curr_frag_len; + u16 i, j; + + skb = napi_get_frags(napi); + if (!skb) { + be_rx_compl_discard(rxo, rxcp); + return; + } + + remaining = rxcp->pkt_size; + for (i = 0, j = -1; i < rxcp->num_rcvd; i++) { + page_info = get_rx_page_info(rxo); + + curr_frag_len = min(remaining, rx_frag_size); + + /* Coalesce all frags from the same physical page in one slot */ + if (i == 0 || page_info->page_offset == 0) { + /* First frag or Fresh page */ + j++; + skb_frag_set_page(skb, j, page_info->page); + skb_shinfo(skb)->frags[j].page_offset = + page_info->page_offset; + skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0); + } else { + put_page(page_info->page); + } + skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len); + skb->truesize += rx_frag_size; + remaining -= curr_frag_len; + memset(page_info, 0, sizeof(*page_info)); + } + BUG_ON(j > MAX_SKB_FRAGS); + + skb_shinfo(skb)->nr_frags = j + 1; + skb->len = rxcp->pkt_size; + skb->data_len = rxcp->pkt_size; + skb->ip_summed = CHECKSUM_UNNECESSARY; + skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]); + if (adapter->netdev->features & NETIF_F_RXHASH) + skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3); + + skb->csum_level = rxcp->tunneled; + + if (rxcp->vlanf) + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag); + + napi_gro_frags(napi); +} + +static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl, + struct be_rx_compl_info *rxcp) +{ + rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl); + rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl); + rxcp->err = GET_RX_COMPL_V1_BITS(err, compl); + rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl); + rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl); + rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl); + rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl); + rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl); + rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl); + rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl); + rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl); + if (rxcp->vlanf) { + rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl); + rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl); + } + rxcp->port = GET_RX_COMPL_V1_BITS(port, compl); + rxcp->tunneled = + GET_RX_COMPL_V1_BITS(tunneled, compl); +} + +static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl, + struct be_rx_compl_info *rxcp) +{ + rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl); + rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl); + rxcp->err = GET_RX_COMPL_V0_BITS(err, compl); + rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl); + rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl); + rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl); + rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl); + rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl); + rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl); + rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl); + rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl); + if (rxcp->vlanf) { + rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl); + rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl); + } + rxcp->port = GET_RX_COMPL_V0_BITS(port, compl); + rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl); +} + +static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo) +{ + struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq); + struct be_rx_compl_info *rxcp = &rxo->rxcp; + struct be_adapter *adapter = rxo->adapter; + + /* For checking the valid bit it is Ok to use either definition as the + * valid bit is at the same position in both v0 and v1 Rx compl */ + if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0) + return NULL; + + rmb(); + be_dws_le_to_cpu(compl, sizeof(*compl)); + + if (adapter->be3_native) + be_parse_rx_compl_v1(compl, rxcp); + else + be_parse_rx_compl_v0(compl, rxcp); + + if (rxcp->ip_frag) + rxcp->l4_csum = 0; + + if (rxcp->vlanf) { + /* In QNQ modes, if qnq bit is not set, then the packet was + * tagged only with the transparent outer vlan-tag and must + * not be treated as a vlan packet by host + */ + if (be_is_qnq_mode(adapter) && !rxcp->qnq) + rxcp->vlanf = 0; + + if (!lancer_chip(adapter)) + rxcp->vlan_tag = swab16(rxcp->vlan_tag); + + if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) && + !test_bit(rxcp->vlan_tag, adapter->vids)) + rxcp->vlanf = 0; + } + + /* As the compl has been parsed, reset it; we wont touch it again */ + compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0; + + queue_tail_inc(&rxo->cq); + return rxcp; +} + +static inline struct page *be_alloc_pages(u32 size, gfp_t gfp) +{ + u32 order = get_order(size); + + if (order > 0) + gfp |= __GFP_COMP; + return alloc_pages(gfp, order); +} + +/* + * Allocate a page, split it to fragments of size rx_frag_size and post as + * receive buffers to BE + */ +static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed) +{ + struct be_adapter *adapter = rxo->adapter; + struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL; + struct be_queue_info *rxq = &rxo->q; + struct page *pagep = NULL; + struct device *dev = &adapter->pdev->dev; + struct be_eth_rx_d *rxd; + u64 page_dmaaddr = 0, frag_dmaaddr; + u32 posted, page_offset = 0, notify = 0; + + page_info = &rxo->page_info_tbl[rxq->head]; + for (posted = 0; posted < frags_needed && !page_info->page; posted++) { + if (!pagep) { + pagep = be_alloc_pages(adapter->big_page_size, gfp); + if (unlikely(!pagep)) { + rx_stats(rxo)->rx_post_fail++; + break; + } + page_dmaaddr = dma_map_page(dev, pagep, 0, + adapter->big_page_size, + DMA_FROM_DEVICE); + if (dma_mapping_error(dev, page_dmaaddr)) { + put_page(pagep); + pagep = NULL; + adapter->drv_stats.dma_map_errors++; + break; + } + page_offset = 0; + } else { + get_page(pagep); + page_offset += rx_frag_size; + } + page_info->page_offset = page_offset; + page_info->page = pagep; + + rxd = queue_head_node(rxq); + frag_dmaaddr = page_dmaaddr + page_info->page_offset; + rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF); + rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr)); + + /* Any space left in the current big page for another frag? */ + if ((page_offset + rx_frag_size + rx_frag_size) > + adapter->big_page_size) { + pagep = NULL; + page_info->last_frag = true; + dma_unmap_addr_set(page_info, bus, page_dmaaddr); + } else { + dma_unmap_addr_set(page_info, bus, frag_dmaaddr); + } + + prev_page_info = page_info; + queue_head_inc(rxq); + page_info = &rxo->page_info_tbl[rxq->head]; + } + + /* Mark the last frag of a page when we break out of the above loop + * with no more slots available in the RXQ + */ + if (pagep) { + prev_page_info->last_frag = true; + dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr); + } + + if (posted) { + atomic_add(posted, &rxq->used); + if (rxo->rx_post_starved) + rxo->rx_post_starved = false; + do { + notify = min(MAX_NUM_POST_ERX_DB, posted); + be_rxq_notify(adapter, rxq->id, notify); + posted -= notify; + } while (posted); + } else if (atomic_read(&rxq->used) == 0) { + /* Let be_worker replenish when memory is available */ + rxo->rx_post_starved = true; + } +} + +static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status) +{ + switch (status) { + case BE_TX_COMP_HDR_PARSE_ERR: + tx_stats(txo)->tx_hdr_parse_err++; + break; + case BE_TX_COMP_NDMA_ERR: + tx_stats(txo)->tx_dma_err++; + break; + case BE_TX_COMP_ACL_ERR: + tx_stats(txo)->tx_spoof_check_err++; + break; + } +} + +static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status) +{ + switch (status) { + case LANCER_TX_COMP_LSO_ERR: + tx_stats(txo)->tx_tso_err++; + break; + case LANCER_TX_COMP_HSW_DROP_MAC_ERR: + case LANCER_TX_COMP_HSW_DROP_VLAN_ERR: + tx_stats(txo)->tx_spoof_check_err++; + break; + case LANCER_TX_COMP_QINQ_ERR: + tx_stats(txo)->tx_qinq_err++; + break; + case LANCER_TX_COMP_PARITY_ERR: + tx_stats(txo)->tx_internal_parity_err++; + break; + case LANCER_TX_COMP_DMA_ERR: + tx_stats(txo)->tx_dma_err++; + break; + case LANCER_TX_COMP_SGE_ERR: + tx_stats(txo)->tx_sge_err++; + break; + } +} + +static struct be_tx_compl_info *be_tx_compl_get(struct be_adapter *adapter, + struct be_tx_obj *txo) +{ + struct be_queue_info *tx_cq = &txo->cq; + struct be_tx_compl_info *txcp = &txo->txcp; + struct be_eth_tx_compl *compl = queue_tail_node(tx_cq); + + if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0) + return NULL; + + /* Ensure load ordering of valid bit dword and other dwords below */ + rmb(); + be_dws_le_to_cpu(compl, sizeof(*compl)); + + txcp->status = GET_TX_COMPL_BITS(status, compl); + txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl); + + if (txcp->status) { + if (lancer_chip(adapter)) { + lancer_update_tx_err(txo, txcp->status); + /* Reset the adapter incase of TSO, + * SGE or Parity error + */ + if (txcp->status == LANCER_TX_COMP_LSO_ERR || + txcp->status == LANCER_TX_COMP_PARITY_ERR || + txcp->status == LANCER_TX_COMP_SGE_ERR) + be_set_error(adapter, BE_ERROR_TX); + } else { + be_update_tx_err(txo, txcp->status); + } + } + + if (be_check_error(adapter, BE_ERROR_TX)) + return NULL; + + compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0; + queue_tail_inc(tx_cq); + return txcp; +} + +static u16 be_tx_compl_process(struct be_adapter *adapter, + struct be_tx_obj *txo, u16 last_index) +{ + struct sk_buff **sent_skbs = txo->sent_skb_list; + struct be_queue_info *txq = &txo->q; + struct sk_buff *skb = NULL; + bool unmap_skb_hdr = false; + struct be_eth_wrb *wrb; + u16 num_wrbs = 0; + u32 frag_index; + + do { + if (sent_skbs[txq->tail]) { + /* Free skb from prev req */ + if (skb) + dev_consume_skb_any(skb); + skb = sent_skbs[txq->tail]; + sent_skbs[txq->tail] = NULL; + queue_tail_inc(txq); /* skip hdr wrb */ + num_wrbs++; + unmap_skb_hdr = true; + } + wrb = queue_tail_node(txq); + frag_index = txq->tail; + unmap_tx_frag(&adapter->pdev->dev, wrb, + (unmap_skb_hdr && skb_headlen(skb))); + unmap_skb_hdr = false; + queue_tail_inc(txq); + num_wrbs++; + } while (frag_index != last_index); + dev_consume_skb_any(skb); + + return num_wrbs; +} + +/* Return the number of events in the event queue */ +static inline int events_get(struct be_eq_obj *eqo) +{ + struct be_eq_entry *eqe; + int num = 0; + + do { + eqe = queue_tail_node(&eqo->q); + if (eqe->evt == 0) + break; + + rmb(); + eqe->evt = 0; + num++; + queue_tail_inc(&eqo->q); + } while (true); + + return num; +} + +/* Leaves the EQ is disarmed state */ +static void be_eq_clean(struct be_eq_obj *eqo) +{ + int num = events_get(eqo); + + be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0); +} + +/* Free posted rx buffers that were not used */ +static void be_rxq_clean(struct be_rx_obj *rxo) +{ + struct be_queue_info *rxq = &rxo->q; + struct be_rx_page_info *page_info; + + while (atomic_read(&rxq->used) > 0) { + page_info = get_rx_page_info(rxo); + put_page(page_info->page); + memset(page_info, 0, sizeof(*page_info)); + } + BUG_ON(atomic_read(&rxq->used)); + rxq->tail = 0; + rxq->head = 0; +} + +static void be_rx_cq_clean(struct be_rx_obj *rxo) +{ + struct be_queue_info *rx_cq = &rxo->cq; + struct be_rx_compl_info *rxcp; + struct be_adapter *adapter = rxo->adapter; + int flush_wait = 0; + + /* Consume pending rx completions. + * Wait for the flush completion (identified by zero num_rcvd) + * to arrive. Notify CQ even when there are no more CQ entries + * for HW to flush partially coalesced CQ entries. + * In Lancer, there is no need to wait for flush compl. + */ + for (;;) { + rxcp = be_rx_compl_get(rxo); + if (!rxcp) { + if (lancer_chip(adapter)) + break; + + if (flush_wait++ > 50 || + be_check_error(adapter, + BE_ERROR_HW)) { + dev_warn(&adapter->pdev->dev, + "did not receive flush compl\n"); + break; + } + be_cq_notify(adapter, rx_cq->id, true, 0); + mdelay(1); + } else { + be_rx_compl_discard(rxo, rxcp); + be_cq_notify(adapter, rx_cq->id, false, 1); + if (rxcp->num_rcvd == 0) + break; + } + } + + /* After cleanup, leave the CQ in unarmed state */ + be_cq_notify(adapter, rx_cq->id, false, 0); +} + +static void be_tx_compl_clean(struct be_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + u16 cmpl = 0, timeo = 0, num_wrbs = 0; + struct be_tx_compl_info *txcp; + struct be_queue_info *txq; + u32 end_idx, notified_idx; + struct be_tx_obj *txo; + int i, pending_txqs; + + /* Stop polling for compls when HW has been silent for 10ms */ + do { + pending_txqs = adapter->num_tx_qs; + + for_all_tx_queues(adapter, txo, i) { + cmpl = 0; + num_wrbs = 0; + txq = &txo->q; + while ((txcp = be_tx_compl_get(adapter, txo))) { + num_wrbs += + be_tx_compl_process(adapter, txo, + txcp->end_index); + cmpl++; + } + if (cmpl) { + be_cq_notify(adapter, txo->cq.id, false, cmpl); + atomic_sub(num_wrbs, &txq->used); + timeo = 0; + } + if (!be_is_tx_compl_pending(txo)) + pending_txqs--; + } + + if (pending_txqs == 0 || ++timeo > 10 || + be_check_error(adapter, BE_ERROR_HW)) + break; + + mdelay(1); + } while (true); + + /* Free enqueued TX that was never notified to HW */ + for_all_tx_queues(adapter, txo, i) { + txq = &txo->q; + + if (atomic_read(&txq->used)) { + dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n", + i, atomic_read(&txq->used)); + notified_idx = txq->tail; + end_idx = txq->tail; + index_adv(&end_idx, atomic_read(&txq->used) - 1, + txq->len); + /* Use the tx-compl process logic to handle requests + * that were not sent to the HW. + */ + num_wrbs = be_tx_compl_process(adapter, txo, end_idx); + atomic_sub(num_wrbs, &txq->used); + BUG_ON(atomic_read(&txq->used)); + txo->pend_wrb_cnt = 0; + /* Since hw was never notified of these requests, + * reset TXQ indices + */ + txq->head = notified_idx; + txq->tail = notified_idx; + } + } +} + +static void be_evt_queues_destroy(struct be_adapter *adapter) +{ + struct be_eq_obj *eqo; + int i; + + for_all_evt_queues(adapter, eqo, i) { + if (eqo->q.created) { + be_eq_clean(eqo); + be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ); + netif_napi_del(&eqo->napi); + free_cpumask_var(eqo->affinity_mask); + } + be_queue_free(adapter, &eqo->q); + } +} + +static int be_evt_queues_create(struct be_adapter *adapter) +{ + struct be_queue_info *eq; + struct be_eq_obj *eqo; + struct be_aic_obj *aic; + int i, rc; + + /* need enough EQs to service both RX and TX queues */ + adapter->num_evt_qs = min_t(u16, num_irqs(adapter), + max(adapter->cfg_num_rx_irqs, + adapter->cfg_num_tx_irqs)); + + for_all_evt_queues(adapter, eqo, i) { + int numa_node = dev_to_node(&adapter->pdev->dev); + + aic = &adapter->aic_obj[i]; + eqo->adapter = adapter; + eqo->idx = i; + aic->max_eqd = BE_MAX_EQD; + aic->enable = true; + + eq = &eqo->q; + rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN, + sizeof(struct be_eq_entry)); + if (rc) + return rc; + + rc = be_cmd_eq_create(adapter, eqo); + if (rc) + return rc; + + if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL)) + return -ENOMEM; + cpumask_set_cpu(cpumask_local_spread(i, numa_node), + eqo->affinity_mask); + netif_napi_add(adapter->netdev, &eqo->napi, be_poll, + BE_NAPI_WEIGHT); + } + return 0; +} + +static void be_mcc_queues_destroy(struct be_adapter *adapter) +{ + struct be_queue_info *q; + + q = &adapter->mcc_obj.q; + if (q->created) + be_cmd_q_destroy(adapter, q, QTYPE_MCCQ); + be_queue_free(adapter, q); + + q = &adapter->mcc_obj.cq; + if (q->created) + be_cmd_q_destroy(adapter, q, QTYPE_CQ); + be_queue_free(adapter, q); +} + +/* Must be called only after TX qs are created as MCC shares TX EQ */ +static int be_mcc_queues_create(struct be_adapter *adapter) +{ + struct be_queue_info *q, *cq; + + cq = &adapter->mcc_obj.cq; + if (be_queue_alloc(adapter, cq, MCC_CQ_LEN, + sizeof(struct be_mcc_compl))) + goto err; + + /* Use the default EQ for MCC completions */ + if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0)) + goto mcc_cq_free; + + q = &adapter->mcc_obj.q; + if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb))) + goto mcc_cq_destroy; + + if (be_cmd_mccq_create(adapter, q, cq)) + goto mcc_q_free; + + return 0; + +mcc_q_free: + be_queue_free(adapter, q); +mcc_cq_destroy: + be_cmd_q_destroy(adapter, cq, QTYPE_CQ); +mcc_cq_free: + be_queue_free(adapter, cq); +err: + return -1; +} + +static void be_tx_queues_destroy(struct be_adapter *adapter) +{ + struct be_queue_info *q; + struct be_tx_obj *txo; + u8 i; + + for_all_tx_queues(adapter, txo, i) { + q = &txo->q; + if (q->created) + be_cmd_q_destroy(adapter, q, QTYPE_TXQ); + be_queue_free(adapter, q); + + q = &txo->cq; + if (q->created) + be_cmd_q_destroy(adapter, q, QTYPE_CQ); + be_queue_free(adapter, q); + } +} + +static int be_tx_qs_create(struct be_adapter *adapter) +{ + struct be_queue_info *cq; + struct be_tx_obj *txo; + struct be_eq_obj *eqo; + int status, i; + + adapter->num_tx_qs = min(adapter->num_evt_qs, adapter->cfg_num_tx_irqs); + + for_all_tx_queues(adapter, txo, i) { + cq = &txo->cq; + status = be_queue_alloc(adapter, cq, TX_CQ_LEN, + sizeof(struct be_eth_tx_compl)); + if (status) + return status; + + u64_stats_init(&txo->stats.sync); + u64_stats_init(&txo->stats.sync_compl); + + /* If num_evt_qs is less than num_tx_qs, then more than + * one txq share an eq + */ + eqo = &adapter->eq_obj[i % adapter->num_evt_qs]; + status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3); + if (status) + return status; + + status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN, + sizeof(struct be_eth_wrb)); + if (status) + return status; + + status = be_cmd_txq_create(adapter, txo); + if (status) + return status; + + netif_set_xps_queue(adapter->netdev, eqo->affinity_mask, + eqo->idx); + } + + dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n", + adapter->num_tx_qs); + return 0; +} + +static void be_rx_cqs_destroy(struct be_adapter *adapter) +{ + struct be_queue_info *q; + struct be_rx_obj *rxo; + int i; + + for_all_rx_queues(adapter, rxo, i) { + q = &rxo->cq; + if (q->created) + be_cmd_q_destroy(adapter, q, QTYPE_CQ); + be_queue_free(adapter, q); + } +} + +static int be_rx_cqs_create(struct be_adapter *adapter) +{ + struct be_queue_info *eq, *cq; + struct be_rx_obj *rxo; + int rc, i; + + adapter->num_rss_qs = + min(adapter->num_evt_qs, adapter->cfg_num_rx_irqs); + + /* We'll use RSS only if atleast 2 RSS rings are supported. */ + if (adapter->num_rss_qs < 2) + adapter->num_rss_qs = 0; + + adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq; + + /* When the interface is not capable of RSS rings (and there is no + * need to create a default RXQ) we'll still need one RXQ + */ + if (adapter->num_rx_qs == 0) + adapter->num_rx_qs = 1; + + adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE; + for_all_rx_queues(adapter, rxo, i) { + rxo->adapter = adapter; + cq = &rxo->cq; + rc = be_queue_alloc(adapter, cq, RX_CQ_LEN, + sizeof(struct be_eth_rx_compl)); + if (rc) + return rc; + + u64_stats_init(&rxo->stats.sync); + eq = &adapter->eq_obj[i % adapter->num_evt_qs].q; + rc = be_cmd_cq_create(adapter, cq, eq, false, 3); + if (rc) + return rc; + } + + dev_info(&adapter->pdev->dev, + "created %d RX queue(s)\n", adapter->num_rx_qs); + return 0; +} + +static irqreturn_t be_intx(int irq, void *dev) +{ + struct be_eq_obj *eqo = dev; + struct be_adapter *adapter = eqo->adapter; + int num_evts = 0; + + /* IRQ is not expected when NAPI is scheduled as the EQ + * will not be armed. + * But, this can happen on Lancer INTx where it takes + * a while to de-assert INTx or in BE2 where occasionaly + * an interrupt may be raised even when EQ is unarmed. + * If NAPI is already scheduled, then counting & notifying + * events will orphan them. + */ + if (napi_schedule_prep(&eqo->napi)) { + num_evts = events_get(eqo); + __napi_schedule(&eqo->napi); + if (num_evts) + eqo->spurious_intr = 0; + } + be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0); + + /* Return IRQ_HANDLED only for the the first spurious intr + * after a valid intr to stop the kernel from branding + * this irq as a bad one! + */ + if (num_evts || eqo->spurious_intr++ == 0) + return IRQ_HANDLED; + else + return IRQ_NONE; +} + +static irqreturn_t be_msix(int irq, void *dev) +{ + struct be_eq_obj *eqo = dev; + + be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0); + napi_schedule(&eqo->napi); + return IRQ_HANDLED; +} + +static inline bool do_gro(struct be_rx_compl_info *rxcp) +{ + return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false; +} + +static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi, + int budget) +{ + struct be_adapter *adapter = rxo->adapter; + struct be_queue_info *rx_cq = &rxo->cq; + struct be_rx_compl_info *rxcp; + u32 work_done; + u32 frags_consumed = 0; + + for (work_done = 0; work_done < budget; work_done++) { + rxcp = be_rx_compl_get(rxo); + if (!rxcp) + break; + + /* Is it a flush compl that has no data */ + if (unlikely(rxcp->num_rcvd == 0)) + goto loop_continue; + + /* Discard compl with partial DMA Lancer B0 */ + if (unlikely(!rxcp->pkt_size)) { + be_rx_compl_discard(rxo, rxcp); + goto loop_continue; + } + + /* On BE drop pkts that arrive due to imperfect filtering in + * promiscuous mode on some skews + */ + if (unlikely(rxcp->port != adapter->port_num && + !lancer_chip(adapter))) { + be_rx_compl_discard(rxo, rxcp); + goto loop_continue; + } + + if (do_gro(rxcp)) + be_rx_compl_process_gro(rxo, napi, rxcp); + else + be_rx_compl_process(rxo, napi, rxcp); + +loop_continue: + frags_consumed += rxcp->num_rcvd; + be_rx_stats_update(rxo, rxcp); + } + + if (work_done) { + be_cq_notify(adapter, rx_cq->id, true, work_done); + + /* When an rx-obj gets into post_starved state, just + * let be_worker do the posting. + */ + if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM && + !rxo->rx_post_starved) + be_post_rx_frags(rxo, GFP_ATOMIC, + max_t(u32, MAX_RX_POST, + frags_consumed)); + } + + return work_done; +} + + +static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo, + int idx) +{ + int num_wrbs = 0, work_done = 0; + struct be_tx_compl_info *txcp; + + while ((txcp = be_tx_compl_get(adapter, txo))) { + num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index); + work_done++; + } + + if (work_done) { + be_cq_notify(adapter, txo->cq.id, true, work_done); + atomic_sub(num_wrbs, &txo->q.used); + + /* As Tx wrbs have been freed up, wake up netdev queue + * if it was stopped due to lack of tx wrbs. */ + if (__netif_subqueue_stopped(adapter->netdev, idx) && + be_can_txq_wake(txo)) { + netif_wake_subqueue(adapter->netdev, idx); + } + + u64_stats_update_begin(&tx_stats(txo)->sync_compl); + tx_stats(txo)->tx_compl += work_done; + u64_stats_update_end(&tx_stats(txo)->sync_compl); + } +} + +int be_poll(struct napi_struct *napi, int budget) +{ + struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi); + struct be_adapter *adapter = eqo->adapter; + int max_work = 0, work, i, num_evts; + struct be_rx_obj *rxo; + struct be_tx_obj *txo; + u32 mult_enc = 0; + + num_evts = events_get(eqo); + + for_all_tx_queues_on_eq(adapter, eqo, txo, i) + be_process_tx(adapter, txo, i); + + /* This loop will iterate twice for EQ0 in which + * completions of the last RXQ (default one) are also processed + * For other EQs the loop iterates only once + */ + for_all_rx_queues_on_eq(adapter, eqo, rxo, i) { + work = be_process_rx(rxo, napi, budget); + max_work = max(work, max_work); + } + + if (is_mcc_eqo(eqo)) + be_process_mcc(adapter); + + if (max_work < budget) { + napi_complete_done(napi, max_work); + + /* Skyhawk EQ_DB has a provision to set the rearm to interrupt + * delay via a delay multiplier encoding value + */ + if (skyhawk_chip(adapter)) + mult_enc = be_get_eq_delay_mult_enc(eqo); + + be_eq_notify(adapter, eqo->q.id, true, false, num_evts, + mult_enc); + } else { + /* As we'll continue in polling mode, count and clear events */ + be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0); + } + return max_work; +} + +void be_detect_error(struct be_adapter *adapter) +{ + u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0; + u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0; + struct device *dev = &adapter->pdev->dev; + u16 val; + u32 i; + + if (be_check_error(adapter, BE_ERROR_HW)) + return; + + if (lancer_chip(adapter)) { + sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET); + if (sliport_status & SLIPORT_STATUS_ERR_MASK) { + be_set_error(adapter, BE_ERROR_UE); + sliport_err1 = ioread32(adapter->db + + SLIPORT_ERROR1_OFFSET); + sliport_err2 = ioread32(adapter->db + + SLIPORT_ERROR2_OFFSET); + /* Do not log error messages if its a FW reset */ + if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 && + sliport_err2 == SLIPORT_ERROR_FW_RESET2) { + dev_info(dev, "Reset is in progress\n"); + } else { + dev_err(dev, "Error detected in the card\n"); + dev_err(dev, "ERR: sliport status 0x%x\n", + sliport_status); + dev_err(dev, "ERR: sliport error1 0x%x\n", + sliport_err1); + dev_err(dev, "ERR: sliport error2 0x%x\n", + sliport_err2); + } + } + } else { + ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW); + ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH); + ue_lo_mask = ioread32(adapter->pcicfg + + PCICFG_UE_STATUS_LOW_MASK); + ue_hi_mask = ioread32(adapter->pcicfg + + PCICFG_UE_STATUS_HI_MASK); + + ue_lo = (ue_lo & ~ue_lo_mask); + ue_hi = (ue_hi & ~ue_hi_mask); + + if (ue_lo || ue_hi) { + /* On certain platforms BE3 hardware can indicate + * spurious UEs. In case of a UE in the chip, + * the POST register correctly reports either a + * FAT_LOG_START state (FW is currently dumping + * FAT log data) or a ARMFW_UE state. Check for the + * above states to ascertain if the UE is valid or not. + */ + if (BE3_chip(adapter)) { + val = be_POST_stage_get(adapter); + if ((val & POST_STAGE_FAT_LOG_START) + != POST_STAGE_FAT_LOG_START && + (val & POST_STAGE_ARMFW_UE) + != POST_STAGE_ARMFW_UE && + (val & POST_STAGE_RECOVERABLE_ERR) + != POST_STAGE_RECOVERABLE_ERR) + return; + } + + dev_err(dev, "Error detected in the adapter"); + be_set_error(adapter, BE_ERROR_UE); + + for (i = 0; ue_lo; ue_lo >>= 1, i++) { + if (ue_lo & 1) + dev_err(dev, "UE: %s bit set\n", + ue_status_low_desc[i]); + } + for (i = 0; ue_hi; ue_hi >>= 1, i++) { + if (ue_hi & 1) + dev_err(dev, "UE: %s bit set\n", + ue_status_hi_desc[i]); + } + } + } +} + +static void be_msix_disable(struct be_adapter *adapter) +{ + if (msix_enabled(adapter)) { + pci_disable_msix(adapter->pdev); + adapter->num_msix_vec = 0; + adapter->num_msix_roce_vec = 0; + } +} + +static int be_msix_enable(struct be_adapter *adapter) +{ + unsigned int i, max_roce_eqs; + struct device *dev = &adapter->pdev->dev; + int num_vec; + + /* If RoCE is supported, program the max number of vectors that + * could be used for NIC and RoCE, else, just program the number + * we'll use initially. + */ + if (be_roce_supported(adapter)) { + max_roce_eqs = + be_max_func_eqs(adapter) - be_max_nic_eqs(adapter); + max_roce_eqs = min(max_roce_eqs, num_online_cpus()); + num_vec = be_max_any_irqs(adapter) + max_roce_eqs; + } else { + num_vec = max(adapter->cfg_num_rx_irqs, + adapter->cfg_num_tx_irqs); + } + + for (i = 0; i < num_vec; i++) + adapter->msix_entries[i].entry = i; + + num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, + MIN_MSIX_VECTORS, num_vec); + if (num_vec < 0) + goto fail; + + if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) { + adapter->num_msix_roce_vec = num_vec / 2; + dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n", + adapter->num_msix_roce_vec); + } + + adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec; + + dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n", + adapter->num_msix_vec); + return 0; + +fail: + dev_warn(dev, "MSIx enable failed\n"); + + /* INTx is not supported in VFs, so fail probe if enable_msix fails */ + if (be_virtfn(adapter)) + return num_vec; + return 0; +} + +static inline int be_msix_vec_get(struct be_adapter *adapter, + struct be_eq_obj *eqo) +{ + return adapter->msix_entries[eqo->msix_idx].vector; +} + +static int be_msix_register(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct be_eq_obj *eqo; + int status, i, vec; + + for_all_evt_queues(adapter, eqo, i) { + sprintf(eqo->desc, "%s-q%d", netdev->name, i); + vec = be_msix_vec_get(adapter, eqo); + status = request_irq(vec, be_msix, 0, eqo->desc, eqo); + if (status) + goto err_msix; + + irq_set_affinity_hint(vec, eqo->affinity_mask); + } + + return 0; +err_msix: + for (i--; i >= 0; i--) { + eqo = &adapter->eq_obj[i]; + free_irq(be_msix_vec_get(adapter, eqo), eqo); + } + dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n", + status); + be_msix_disable(adapter); + return status; +} + +static int be_irq_register(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + int status; + + if (msix_enabled(adapter)) { + status = be_msix_register(adapter); + if (status == 0) + goto done; + /* INTx is not supported for VF */ + if (be_virtfn(adapter)) + return status; + } + + /* INTx: only the first EQ is used */ + netdev->irq = adapter->pdev->irq; + status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name, + &adapter->eq_obj[0]); + if (status) { + dev_err(&adapter->pdev->dev, + "INTx request IRQ failed - err %d\n", status); + return status; + } +done: + adapter->isr_registered = true; + return 0; +} + +static void be_irq_unregister(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct be_eq_obj *eqo; + int i, vec; + + if (!adapter->isr_registered) + return; + + /* INTx */ + if (!msix_enabled(adapter)) { + free_irq(netdev->irq, &adapter->eq_obj[0]); + goto done; + } + + /* MSIx */ + for_all_evt_queues(adapter, eqo, i) { + vec = be_msix_vec_get(adapter, eqo); + irq_set_affinity_hint(vec, NULL); + free_irq(vec, eqo); + } + +done: + adapter->isr_registered = false; +} + +static void be_rx_qs_destroy(struct be_adapter *adapter) +{ + struct rss_info *rss = &adapter->rss_info; + struct be_queue_info *q; + struct be_rx_obj *rxo; + int i; + + for_all_rx_queues(adapter, rxo, i) { + q = &rxo->q; + if (q->created) { + /* If RXQs are destroyed while in an "out of buffer" + * state, there is a possibility of an HW stall on + * Lancer. So, post 64 buffers to each queue to relieve + * the "out of buffer" condition. + * Make sure there's space in the RXQ before posting. + */ + if (lancer_chip(adapter)) { + be_rx_cq_clean(rxo); + if (atomic_read(&q->used) == 0) + be_post_rx_frags(rxo, GFP_KERNEL, + MAX_RX_POST); + } + + be_cmd_rxq_destroy(adapter, q); + be_rx_cq_clean(rxo); + be_rxq_clean(rxo); + } + be_queue_free(adapter, q); + } + + if (rss->rss_flags) { + rss->rss_flags = RSS_ENABLE_NONE; + be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags, + 128, rss->rss_hkey); + } +} + +static void be_disable_if_filters(struct be_adapter *adapter) +{ + /* Don't delete MAC on BE3 VFs without FILTMGMT privilege */ + if (!BEx_chip(adapter) || !be_virtfn(adapter) || + check_privilege(adapter, BE_PRIV_FILTMGMT)) { + be_dev_mac_del(adapter, adapter->pmac_id[0]); + eth_zero_addr(adapter->dev_mac); + } + + be_clear_uc_list(adapter); + be_clear_mc_list(adapter); + + /* The IFACE flags are enabled in the open path and cleared + * in the close path. When a VF gets detached from the host and + * assigned to a VM the following happens: + * - VF's IFACE flags get cleared in the detach path + * - IFACE create is issued by the VF in the attach path + * Due to a bug in the BE3/Skyhawk-R FW + * (Lancer FW doesn't have the bug), the IFACE capability flags + * specified along with the IFACE create cmd issued by a VF are not + * honoured by FW. As a consequence, if a *new* driver + * (that enables/disables IFACE flags in open/close) + * is loaded in the host and an *old* driver is * used by a VM/VF, + * the IFACE gets created *without* the needed flags. + * To avoid this, disable RX-filter flags only for Lancer. + */ + if (lancer_chip(adapter)) { + be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF); + adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS; + } +} + +static int be_close(struct net_device *netdev) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_eq_obj *eqo; + int i; + + /* This protection is needed as be_close() may be called even when the + * adapter is in cleared state (after eeh perm failure) + */ + if (!(adapter->flags & BE_FLAGS_SETUP_DONE)) + return 0; + + /* Before attempting cleanup ensure all the pending cmds in the + * config_wq have finished execution + */ + flush_workqueue(be_wq); + + be_disable_if_filters(adapter); + + if (adapter->flags & BE_FLAGS_NAPI_ENABLED) { + for_all_evt_queues(adapter, eqo, i) { + napi_disable(&eqo->napi); + } + adapter->flags &= ~BE_FLAGS_NAPI_ENABLED; + } + + be_async_mcc_disable(adapter); + + /* Wait for all pending tx completions to arrive so that + * all tx skbs are freed. + */ + netif_tx_disable(netdev); + be_tx_compl_clean(adapter); + + be_rx_qs_destroy(adapter); + + for_all_evt_queues(adapter, eqo, i) { + if (msix_enabled(adapter)) + synchronize_irq(be_msix_vec_get(adapter, eqo)); + else + synchronize_irq(netdev->irq); + be_eq_clean(eqo); + } + + be_irq_unregister(adapter); + + return 0; +} + +static int be_rx_qs_create(struct be_adapter *adapter) +{ + struct rss_info *rss = &adapter->rss_info; + u8 rss_key[RSS_HASH_KEY_LEN]; + struct be_rx_obj *rxo; + int rc, i, j; + + for_all_rx_queues(adapter, rxo, i) { + rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN, + sizeof(struct be_eth_rx_d)); + if (rc) + return rc; + } + + if (adapter->need_def_rxq || !adapter->num_rss_qs) { + rxo = default_rxo(adapter); + rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id, + rx_frag_size, adapter->if_handle, + false, &rxo->rss_id); + if (rc) + return rc; + } + + for_all_rss_queues(adapter, rxo, i) { + rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id, + rx_frag_size, adapter->if_handle, + true, &rxo->rss_id); + if (rc) + return rc; + } + + if (be_multi_rxq(adapter)) { + for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) { + for_all_rss_queues(adapter, rxo, i) { + if ((j + i) >= RSS_INDIR_TABLE_LEN) + break; + rss->rsstable[j + i] = rxo->rss_id; + rss->rss_queue[j + i] = i; + } + } + rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 | + RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6; + + if (!BEx_chip(adapter)) + rss->rss_flags |= RSS_ENABLE_UDP_IPV4 | + RSS_ENABLE_UDP_IPV6; + + netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN); + rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags, + RSS_INDIR_TABLE_LEN, rss_key); + if (rc) { + rss->rss_flags = RSS_ENABLE_NONE; + return rc; + } + + memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN); + } else { + /* Disable RSS, if only default RX Q is created */ + rss->rss_flags = RSS_ENABLE_NONE; + } + + + /* Post 1 less than RXQ-len to avoid head being equal to tail, + * which is a queue empty condition + */ + for_all_rx_queues(adapter, rxo, i) + be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1); + + return 0; +} + +static int be_enable_if_filters(struct be_adapter *adapter) +{ + int status; + + status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON); + if (status) + return status; + + /* Normally this condition usually true as the ->dev_mac is zeroed. + * But on BE3 VFs the initial MAC is pre-programmed by PF and + * subsequent be_dev_mac_add() can fail (after fresh boot) + */ + if (!ether_addr_equal(adapter->dev_mac, adapter->netdev->dev_addr)) { + int old_pmac_id = -1; + + /* Remember old programmed MAC if any - can happen on BE3 VF */ + if (!is_zero_ether_addr(adapter->dev_mac)) + old_pmac_id = adapter->pmac_id[0]; + + status = be_dev_mac_add(adapter, adapter->netdev->dev_addr); + if (status) + return status; + + /* Delete the old programmed MAC as we successfully programmed + * a new MAC + */ + if (old_pmac_id >= 0 && old_pmac_id != adapter->pmac_id[0]) + be_dev_mac_del(adapter, old_pmac_id); + + ether_addr_copy(adapter->dev_mac, adapter->netdev->dev_addr); + } + + if (adapter->vlans_added) + be_vid_config(adapter); + + __be_set_rx_mode(adapter); + + return 0; +} + +static int be_open(struct net_device *netdev) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_eq_obj *eqo; + struct be_rx_obj *rxo; + struct be_tx_obj *txo; + u8 link_status; + int status, i; + + status = be_rx_qs_create(adapter); + if (status) + goto err; + + status = be_enable_if_filters(adapter); + if (status) + goto err; + + status = be_irq_register(adapter); + if (status) + goto err; + + for_all_rx_queues(adapter, rxo, i) + be_cq_notify(adapter, rxo->cq.id, true, 0); + + for_all_tx_queues(adapter, txo, i) + be_cq_notify(adapter, txo->cq.id, true, 0); + + be_async_mcc_enable(adapter); + + for_all_evt_queues(adapter, eqo, i) { + napi_enable(&eqo->napi); + be_eq_notify(adapter, eqo->q.id, true, true, 0, 0); + } + adapter->flags |= BE_FLAGS_NAPI_ENABLED; + + status = be_cmd_link_status_query(adapter, NULL, &link_status, 0); + if (!status) + be_link_status_update(adapter, link_status); + + netif_tx_start_all_queues(netdev); + if (skyhawk_chip(adapter)) + udp_tunnel_get_rx_info(netdev); + + return 0; +err: + be_close(adapter->netdev); + return -EIO; +} + +static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac) +{ + u32 addr; + + addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0); + + mac[5] = (u8)(addr & 0xFF); + mac[4] = (u8)((addr >> 8) & 0xFF); + mac[3] = (u8)((addr >> 16) & 0xFF); + /* Use the OUI from the current MAC address */ + memcpy(mac, adapter->netdev->dev_addr, 3); +} + +/* + * Generate a seed MAC address from the PF MAC Address using jhash. + * MAC Address for VFs are assigned incrementally starting from the seed. + * These addresses are programmed in the ASIC by the PF and the VF driver + * queries for the MAC address during its probe. + */ +static int be_vf_eth_addr_config(struct be_adapter *adapter) +{ + u32 vf; + int status = 0; + u8 mac[ETH_ALEN]; + struct be_vf_cfg *vf_cfg; + + be_vf_eth_addr_generate(adapter, mac); + + for_all_vfs(adapter, vf_cfg, vf) { + if (BEx_chip(adapter)) + status = be_cmd_pmac_add(adapter, mac, + vf_cfg->if_handle, + &vf_cfg->pmac_id, vf + 1); + else + status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle, + vf + 1); + + if (status) + dev_err(&adapter->pdev->dev, + "Mac address assignment failed for VF %d\n", + vf); + else + memcpy(vf_cfg->mac_addr, mac, ETH_ALEN); + + mac[5] += 1; + } + return status; +} + +static int be_vfs_mac_query(struct be_adapter *adapter) +{ + int status, vf; + u8 mac[ETH_ALEN]; + struct be_vf_cfg *vf_cfg; + + for_all_vfs(adapter, vf_cfg, vf) { + status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id, + mac, vf_cfg->if_handle, + false, vf+1); + if (status) + return status; + memcpy(vf_cfg->mac_addr, mac, ETH_ALEN); + } + return 0; +} + +static void be_vf_clear(struct be_adapter *adapter) +{ + struct be_vf_cfg *vf_cfg; + u32 vf; + + if (pci_vfs_assigned(adapter->pdev)) { + dev_warn(&adapter->pdev->dev, + "VFs are assigned to VMs: not disabling VFs\n"); + goto done; + } + + pci_disable_sriov(adapter->pdev); + + for_all_vfs(adapter, vf_cfg, vf) { + if (BEx_chip(adapter)) + be_cmd_pmac_del(adapter, vf_cfg->if_handle, + vf_cfg->pmac_id, vf + 1); + else + be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle, + vf + 1); + + be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1); + } + + if (BE3_chip(adapter)) + be_cmd_set_hsw_config(adapter, 0, 0, + adapter->if_handle, + PORT_FWD_TYPE_PASSTHRU, 0); +done: + kfree(adapter->vf_cfg); + adapter->num_vfs = 0; + adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED; +} + +static void be_clear_queues(struct be_adapter *adapter) +{ + be_mcc_queues_destroy(adapter); + be_rx_cqs_destroy(adapter); + be_tx_queues_destroy(adapter); + be_evt_queues_destroy(adapter); +} + +static void be_cancel_worker(struct be_adapter *adapter) +{ + if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) { + cancel_delayed_work_sync(&adapter->work); + adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED; + } +} + +static void be_cancel_err_detection(struct be_adapter *adapter) +{ + struct be_error_recovery *err_rec = &adapter->error_recovery; + + if (!be_err_recovery_workq) + return; + + if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) { + cancel_delayed_work_sync(&err_rec->err_detection_work); + adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED; + } +} + +static int be_enable_vxlan_offloads(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct device *dev = &adapter->pdev->dev; + struct be_vxlan_port *vxlan_port; + __be16 port; + int status; + + vxlan_port = list_first_entry(&adapter->vxlan_port_list, + struct be_vxlan_port, list); + port = vxlan_port->port; + + status = be_cmd_manage_iface(adapter, adapter->if_handle, + OP_CONVERT_NORMAL_TO_TUNNEL); + if (status) { + dev_warn(dev, "Failed to convert normal interface to tunnel\n"); + return status; + } + adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS; + + status = be_cmd_set_vxlan_port(adapter, port); + if (status) { + dev_warn(dev, "Failed to add VxLAN port\n"); + return status; + } + adapter->vxlan_port = port; + + netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_GSO_UDP_TUNNEL; + + dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n", + be16_to_cpu(port)); + return 0; +} + +static void be_disable_vxlan_offloads(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + + if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) + be_cmd_manage_iface(adapter, adapter->if_handle, + OP_CONVERT_TUNNEL_TO_NORMAL); + + if (adapter->vxlan_port) + be_cmd_set_vxlan_port(adapter, 0); + + adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS; + adapter->vxlan_port = 0; + + netdev->hw_enc_features = 0; +} + +static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs, + struct be_resources *vft_res) +{ + struct be_resources res = adapter->pool_res; + u32 vf_if_cap_flags = res.vf_if_cap_flags; + struct be_resources res_mod = {0}; + u16 num_vf_qs = 1; + + /* Distribute the queue resources among the PF and it's VFs */ + if (num_vfs) { + /* Divide the rx queues evenly among the VFs and the PF, capped + * at VF-EQ-count. Any remainder queues belong to the PF. + */ + num_vf_qs = min(SH_VF_MAX_NIC_EQS, + res.max_rss_qs / (num_vfs + 1)); + + /* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES + * RSS Tables per port. Provide RSS on VFs, only if number of + * VFs requested is less than it's PF Pool's RSS Tables limit. + */ + if (num_vfs >= be_max_pf_pool_rss_tables(adapter)) + num_vf_qs = 1; + } + + /* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd, + * which are modifiable using SET_PROFILE_CONFIG cmd. + */ + be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE, + RESOURCE_MODIFIABLE, 0); + + /* If RSS IFACE capability flags are modifiable for a VF, set the + * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if + * more than 1 RSSQ is available for a VF. + * Otherwise, provision only 1 queue pair for VF. + */ + if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) { + vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT); + if (num_vf_qs > 1) { + vf_if_cap_flags |= BE_IF_FLAGS_RSS; + if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS) + vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS; + } else { + vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS | + BE_IF_FLAGS_DEFQ_RSS); + } + } else { + num_vf_qs = 1; + } + + if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) { + vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT); + vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS; + } + + vft_res->vf_if_cap_flags = vf_if_cap_flags; + vft_res->max_rx_qs = num_vf_qs; + vft_res->max_rss_qs = num_vf_qs; + vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1); + vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1); + + /* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally + * among the PF and it's VFs, if the fields are changeable + */ + if (res_mod.max_uc_mac == FIELD_MODIFIABLE) + vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1); + + if (res_mod.max_vlans == FIELD_MODIFIABLE) + vft_res->max_vlans = res.max_vlans / (num_vfs + 1); + + if (res_mod.max_iface_count == FIELD_MODIFIABLE) + vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1); + + if (res_mod.max_mcc_count == FIELD_MODIFIABLE) + vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1); +} + +static void be_if_destroy(struct be_adapter *adapter) +{ + be_cmd_if_destroy(adapter, adapter->if_handle, 0); + + kfree(adapter->pmac_id); + adapter->pmac_id = NULL; + + kfree(adapter->mc_list); + adapter->mc_list = NULL; + + kfree(adapter->uc_list); + adapter->uc_list = NULL; +} + +static int be_clear(struct be_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + struct be_resources vft_res = {0}; + + be_cancel_worker(adapter); + + flush_workqueue(be_wq); + + if (sriov_enabled(adapter)) + be_vf_clear(adapter); + + /* Re-configure FW to distribute resources evenly across max-supported + * number of VFs, only when VFs are not already enabled. + */ + if (skyhawk_chip(adapter) && be_physfn(adapter) && + !pci_vfs_assigned(pdev)) { + be_calculate_vf_res(adapter, + pci_sriov_get_totalvfs(pdev), + &vft_res); + be_cmd_set_sriov_config(adapter, adapter->pool_res, + pci_sriov_get_totalvfs(pdev), + &vft_res); + } + + be_disable_vxlan_offloads(adapter); + + be_if_destroy(adapter); + + be_clear_queues(adapter); + + be_msix_disable(adapter); + adapter->flags &= ~BE_FLAGS_SETUP_DONE; + return 0; +} + +static int be_vfs_if_create(struct be_adapter *adapter) +{ + struct be_resources res = {0}; + u32 cap_flags, en_flags, vf; + struct be_vf_cfg *vf_cfg; + int status; + + /* If a FW profile exists, then cap_flags are updated */ + cap_flags = BE_VF_IF_EN_FLAGS; + + for_all_vfs(adapter, vf_cfg, vf) { + if (!BE3_chip(adapter)) { + status = be_cmd_get_profile_config(adapter, &res, NULL, + ACTIVE_PROFILE_TYPE, + RESOURCE_LIMITS, + vf + 1); + if (!status) { + cap_flags = res.if_cap_flags; + /* Prevent VFs from enabling VLAN promiscuous + * mode + */ + cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS; + } + } + + /* PF should enable IF flags during proxy if_create call */ + en_flags = cap_flags & BE_VF_IF_EN_FLAGS; + status = be_cmd_if_create(adapter, cap_flags, en_flags, + &vf_cfg->if_handle, vf + 1); + if (status) + return status; + } + + return 0; +} + +static int be_vf_setup_init(struct be_adapter *adapter) +{ + struct be_vf_cfg *vf_cfg; + int vf; + + adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg), + GFP_KERNEL); + if (!adapter->vf_cfg) + return -ENOMEM; + + for_all_vfs(adapter, vf_cfg, vf) { + vf_cfg->if_handle = -1; + vf_cfg->pmac_id = -1; + } + return 0; +} + +static int be_vf_setup(struct be_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + struct be_vf_cfg *vf_cfg; + int status, old_vfs, vf; + bool spoofchk; + + old_vfs = pci_num_vf(adapter->pdev); + + status = be_vf_setup_init(adapter); + if (status) + goto err; + + if (old_vfs) { + for_all_vfs(adapter, vf_cfg, vf) { + status = be_cmd_get_if_id(adapter, vf_cfg, vf); + if (status) + goto err; + } + + status = be_vfs_mac_query(adapter); + if (status) + goto err; + } else { + status = be_vfs_if_create(adapter); + if (status) + goto err; + + status = be_vf_eth_addr_config(adapter); + if (status) + goto err; + } + + for_all_vfs(adapter, vf_cfg, vf) { + /* Allow VFs to programs MAC/VLAN filters */ + status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges, + vf + 1); + if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) { + status = be_cmd_set_fn_privileges(adapter, + vf_cfg->privileges | + BE_PRIV_FILTMGMT, + vf + 1); + if (!status) { + vf_cfg->privileges |= BE_PRIV_FILTMGMT; + dev_info(dev, "VF%d has FILTMGMT privilege\n", + vf); + } + } + + /* Allow full available bandwidth */ + if (!old_vfs) + be_cmd_config_qos(adapter, 0, 0, vf + 1); + + status = be_cmd_get_hsw_config(adapter, NULL, vf + 1, + vf_cfg->if_handle, NULL, + &spoofchk); + if (!status) + vf_cfg->spoofchk = spoofchk; + + if (!old_vfs) { + be_cmd_enable_vf(adapter, vf + 1); + be_cmd_set_logical_link_config(adapter, + IFLA_VF_LINK_STATE_AUTO, + vf+1); + } + } + + if (!old_vfs) { + status = pci_enable_sriov(adapter->pdev, adapter->num_vfs); + if (status) { + dev_err(dev, "SRIOV enable failed\n"); + adapter->num_vfs = 0; + goto err; + } + } + + if (BE3_chip(adapter)) { + /* On BE3, enable VEB only when SRIOV is enabled */ + status = be_cmd_set_hsw_config(adapter, 0, 0, + adapter->if_handle, + PORT_FWD_TYPE_VEB, 0); + if (status) + goto err; + } + + adapter->flags |= BE_FLAGS_SRIOV_ENABLED; + return 0; +err: + dev_err(dev, "VF setup failed\n"); + be_vf_clear(adapter); + return status; +} + +/* Converting function_mode bits on BE3 to SH mc_type enums */ + +static u8 be_convert_mc_type(u32 function_mode) +{ + if (function_mode & VNIC_MODE && function_mode & QNQ_MODE) + return vNIC1; + else if (function_mode & QNQ_MODE) + return FLEX10; + else if (function_mode & VNIC_MODE) + return vNIC2; + else if (function_mode & UMC_ENABLED) + return UMC; + else + return MC_NONE; +} + +/* On BE2/BE3 FW does not suggest the supported limits */ +static void BEx_get_resources(struct be_adapter *adapter, + struct be_resources *res) +{ + bool use_sriov = adapter->num_vfs ? 1 : 0; + + if (be_physfn(adapter)) + res->max_uc_mac = BE_UC_PMAC_COUNT; + else + res->max_uc_mac = BE_VF_UC_PMAC_COUNT; + + adapter->mc_type = be_convert_mc_type(adapter->function_mode); + + if (be_is_mc(adapter)) { + /* Assuming that there are 4 channels per port, + * when multi-channel is enabled + */ + if (be_is_qnq_mode(adapter)) + res->max_vlans = BE_NUM_VLANS_SUPPORTED/8; + else + /* In a non-qnq multichannel mode, the pvid + * takes up one vlan entry + */ + res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1; + } else { + res->max_vlans = BE_NUM_VLANS_SUPPORTED; + } + + res->max_mcast_mac = BE_MAX_MC; + + /* 1) For BE3 1Gb ports, FW does not support multiple TXQs + * 2) Create multiple TX rings on a BE3-R multi-channel interface + * *only* if it is RSS-capable. + */ + if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) || + be_virtfn(adapter) || + (be_is_mc(adapter) && + !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) { + res->max_tx_qs = 1; + } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) { + struct be_resources super_nic_res = {0}; + + /* On a SuperNIC profile, the driver needs to use the + * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits + */ + be_cmd_get_profile_config(adapter, &super_nic_res, NULL, + ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS, + 0); + /* Some old versions of BE3 FW don't report max_tx_qs value */ + res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS; + } else { + res->max_tx_qs = BE3_MAX_TX_QS; + } + + if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) && + !use_sriov && be_physfn(adapter)) + res->max_rss_qs = (adapter->be3_native) ? + BE3_MAX_RSS_QS : BE2_MAX_RSS_QS; + res->max_rx_qs = res->max_rss_qs + 1; + + if (be_physfn(adapter)) + res->max_evt_qs = (be_max_vfs(adapter) > 0) ? + BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS; + else + res->max_evt_qs = 1; + + res->if_cap_flags = BE_IF_CAP_FLAGS_WANT; + res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS; + if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS)) + res->if_cap_flags &= ~BE_IF_FLAGS_RSS; +} + +static void be_setup_init(struct be_adapter *adapter) +{ + adapter->vlan_prio_bmap = 0xff; + adapter->phy.link_speed = -1; + adapter->if_handle = -1; + adapter->be3_native = false; + adapter->if_flags = 0; + adapter->phy_state = BE_UNKNOWN_PHY_STATE; + if (be_physfn(adapter)) + adapter->cmd_privileges = MAX_PRIVILEGES; + else + adapter->cmd_privileges = MIN_PRIVILEGES; +} + +/* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port. + * However, this HW limitation is not exposed to the host via any SLI cmd. + * As a result, in the case of SRIOV and in particular multi-partition configs + * the driver needs to calcuate a proportional share of RSS Tables per PF-pool + * for distribution between the VFs. This self-imposed limit will determine the + * no: of VFs for which RSS can be enabled. + */ +static void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter) +{ + struct be_port_resources port_res = {0}; + u8 rss_tables_on_port; + u16 max_vfs = be_max_vfs(adapter); + + be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE, + RESOURCE_LIMITS, 0); + + rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs; + + /* Each PF Pool's RSS Tables limit = + * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port + */ + adapter->pool_res.max_rss_tables = + max_vfs * rss_tables_on_port / port_res.max_vfs; +} + +static int be_get_sriov_config(struct be_adapter *adapter) +{ + struct be_resources res = {0}; + int max_vfs, old_vfs; + + be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE, + RESOURCE_LIMITS, 0); + + /* Some old versions of BE3 FW don't report max_vfs value */ + if (BE3_chip(adapter) && !res.max_vfs) { + max_vfs = pci_sriov_get_totalvfs(adapter->pdev); + res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0; + } + + adapter->pool_res = res; + + /* If during previous unload of the driver, the VFs were not disabled, + * then we cannot rely on the PF POOL limits for the TotalVFs value. + * Instead use the TotalVFs value stored in the pci-dev struct. + */ + old_vfs = pci_num_vf(adapter->pdev); + if (old_vfs) { + dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n", + old_vfs); + + adapter->pool_res.max_vfs = + pci_sriov_get_totalvfs(adapter->pdev); + adapter->num_vfs = old_vfs; + } + + if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) { + be_calculate_pf_pool_rss_tables(adapter); + dev_info(&adapter->pdev->dev, + "RSS can be enabled for all VFs if num_vfs <= %d\n", + be_max_pf_pool_rss_tables(adapter)); + } + return 0; +} + +static void be_alloc_sriov_res(struct be_adapter *adapter) +{ + int old_vfs = pci_num_vf(adapter->pdev); + struct be_resources vft_res = {0}; + int status; + + be_get_sriov_config(adapter); + + if (!old_vfs) + pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter)); + + /* When the HW is in SRIOV capable configuration, the PF-pool + * resources are given to PF during driver load, if there are no + * old VFs. This facility is not available in BE3 FW. + * Also, this is done by FW in Lancer chip. + */ + if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) { + be_calculate_vf_res(adapter, 0, &vft_res); + status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0, + &vft_res); + if (status) + dev_err(&adapter->pdev->dev, + "Failed to optimize SRIOV resources\n"); + } +} + +static int be_get_resources(struct be_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + struct be_resources res = {0}; + int status; + + /* For Lancer, SH etc read per-function resource limits from FW. + * GET_FUNC_CONFIG returns per function guaranteed limits. + * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits + */ + if (BEx_chip(adapter)) { + BEx_get_resources(adapter, &res); + } else { + status = be_cmd_get_func_config(adapter, &res); + if (status) + return status; + + /* If a deafault RXQ must be created, we'll use up one RSSQ*/ + if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs && + !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)) + res.max_rss_qs -= 1; + } + + /* If RoCE is supported stash away half the EQs for RoCE */ + res.max_nic_evt_qs = be_roce_supported(adapter) ? + res.max_evt_qs / 2 : res.max_evt_qs; + adapter->res = res; + + /* If FW supports RSS default queue, then skip creating non-RSS + * queue for non-IP traffic. + */ + adapter->need_def_rxq = (be_if_cap_flags(adapter) & + BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1; + + dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n", + be_max_txqs(adapter), be_max_rxqs(adapter), + be_max_rss(adapter), be_max_nic_eqs(adapter), + be_max_vfs(adapter)); + dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n", + be_max_uc(adapter), be_max_mc(adapter), + be_max_vlans(adapter)); + + /* Ensure RX and TX queues are created in pairs at init time */ + adapter->cfg_num_rx_irqs = + min_t(u16, netif_get_num_default_rss_queues(), + be_max_qp_irqs(adapter)); + adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs; + return 0; +} + +static int be_get_config(struct be_adapter *adapter) +{ + int status, level; + u16 profile_id; + + status = be_cmd_get_cntl_attributes(adapter); + if (status) + return status; + + status = be_cmd_query_fw_cfg(adapter); + if (status) + return status; + + if (!lancer_chip(adapter) && be_physfn(adapter)) + be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len); + + if (BEx_chip(adapter)) { + level = be_cmd_get_fw_log_level(adapter); + adapter->msg_enable = + level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0; + } + + be_cmd_get_acpi_wol_cap(adapter); + pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en); + pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en); + + be_cmd_query_port_name(adapter); + + if (be_physfn(adapter)) { + status = be_cmd_get_active_profile(adapter, &profile_id); + if (!status) + dev_info(&adapter->pdev->dev, + "Using profile 0x%x\n", profile_id); + } + + return 0; +} + +static int be_mac_setup(struct be_adapter *adapter) +{ + u8 mac[ETH_ALEN]; + int status; + + if (is_zero_ether_addr(adapter->netdev->dev_addr)) { + status = be_cmd_get_perm_mac(adapter, mac); + if (status) + return status; + + memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN); + memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN); + + /* Initial MAC for BE3 VFs is already programmed by PF */ + if (BEx_chip(adapter) && be_virtfn(adapter)) + memcpy(adapter->dev_mac, mac, ETH_ALEN); + } + + return 0; +} + +static void be_schedule_worker(struct be_adapter *adapter) +{ + queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000)); + adapter->flags |= BE_FLAGS_WORKER_SCHEDULED; +} + +static void be_destroy_err_recovery_workq(void) +{ + if (!be_err_recovery_workq) + return; + + flush_workqueue(be_err_recovery_workq); + destroy_workqueue(be_err_recovery_workq); + be_err_recovery_workq = NULL; +} + +static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay) +{ + struct be_error_recovery *err_rec = &adapter->error_recovery; + + if (!be_err_recovery_workq) + return; + + queue_delayed_work(be_err_recovery_workq, &err_rec->err_detection_work, + msecs_to_jiffies(delay)); + adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED; +} + +static int be_setup_queues(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + int status; + + status = be_evt_queues_create(adapter); + if (status) + goto err; + + status = be_tx_qs_create(adapter); + if (status) + goto err; + + status = be_rx_cqs_create(adapter); + if (status) + goto err; + + status = be_mcc_queues_create(adapter); + if (status) + goto err; + + status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs); + if (status) + goto err; + + status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs); + if (status) + goto err; + + return 0; +err: + dev_err(&adapter->pdev->dev, "queue_setup failed\n"); + return status; +} + +static int be_if_create(struct be_adapter *adapter) +{ + u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS; + u32 cap_flags = be_if_cap_flags(adapter); + int status; + + /* alloc required memory for other filtering fields */ + adapter->pmac_id = kcalloc(be_max_uc(adapter), + sizeof(*adapter->pmac_id), GFP_KERNEL); + if (!adapter->pmac_id) + return -ENOMEM; + + adapter->mc_list = kcalloc(be_max_mc(adapter), + sizeof(*adapter->mc_list), GFP_KERNEL); + if (!adapter->mc_list) + return -ENOMEM; + + adapter->uc_list = kcalloc(be_max_uc(adapter), + sizeof(*adapter->uc_list), GFP_KERNEL); + if (!adapter->uc_list) + return -ENOMEM; + + if (adapter->cfg_num_rx_irqs == 1) + cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS); + + en_flags &= cap_flags; + /* will enable all the needed filter flags in be_open() */ + status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags, + &adapter->if_handle, 0); + + if (status) + return status; + + return 0; +} + +int be_update_queues(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + int status; + + if (netif_running(netdev)) { + /* device cannot transmit now, avoid dev_watchdog timeouts */ + netif_carrier_off(netdev); + + be_close(netdev); + } + + be_cancel_worker(adapter); + + /* If any vectors have been shared with RoCE we cannot re-program + * the MSIx table. + */ + if (!adapter->num_msix_roce_vec) + be_msix_disable(adapter); + + be_clear_queues(adapter); + status = be_cmd_if_destroy(adapter, adapter->if_handle, 0); + if (status) + return status; + + if (!msix_enabled(adapter)) { + status = be_msix_enable(adapter); + if (status) + return status; + } + + status = be_if_create(adapter); + if (status) + return status; + + status = be_setup_queues(adapter); + if (status) + return status; + + be_schedule_worker(adapter); + + /* The IF was destroyed and re-created. We need to clear + * all promiscuous flags valid for the destroyed IF. + * Without this promisc mode is not restored during + * be_open() because the driver thinks that it is + * already enabled in HW. + */ + adapter->if_flags &= ~BE_IF_FLAGS_ALL_PROMISCUOUS; + + if (netif_running(netdev)) + status = be_open(netdev); + + return status; +} + +static inline int fw_major_num(const char *fw_ver) +{ + int fw_major = 0, i; + + i = sscanf(fw_ver, "%d.", &fw_major); + if (i != 1) + return 0; + + return fw_major; +} + +/* If it is error recovery, FLR the PF + * Else if any VFs are already enabled don't FLR the PF + */ +static bool be_reset_required(struct be_adapter *adapter) +{ + if (be_error_recovering(adapter)) + return true; + else + return pci_num_vf(adapter->pdev) == 0; +} + +/* Wait for the FW to be ready and perform the required initialization */ +static int be_func_init(struct be_adapter *adapter) +{ + int status; + + status = be_fw_wait_ready(adapter); + if (status) + return status; + + /* FW is now ready; clear errors to allow cmds/doorbell */ + be_clear_error(adapter, BE_CLEAR_ALL); + + if (be_reset_required(adapter)) { + status = be_cmd_reset_function(adapter); + if (status) + return status; + + /* Wait for interrupts to quiesce after an FLR */ + msleep(100); + } + + /* Tell FW we're ready to fire cmds */ + status = be_cmd_fw_init(adapter); + if (status) + return status; + + /* Allow interrupts for other ULPs running on NIC function */ + be_intr_set(adapter, true); + + return 0; +} + +static int be_setup(struct be_adapter *adapter) +{ + struct device *dev = &adapter->pdev->dev; + int status; + + status = be_func_init(adapter); + if (status) + return status; + + be_setup_init(adapter); + + if (!lancer_chip(adapter)) + be_cmd_req_native_mode(adapter); + + /* invoke this cmd first to get pf_num and vf_num which are needed + * for issuing profile related cmds + */ + if (!BEx_chip(adapter)) { + status = be_cmd_get_func_config(adapter, NULL); + if (status) + return status; + } + + status = be_get_config(adapter); + if (status) + goto err; + + if (!BE2_chip(adapter) && be_physfn(adapter)) + be_alloc_sriov_res(adapter); + + status = be_get_resources(adapter); + if (status) + goto err; + + status = be_msix_enable(adapter); + if (status) + goto err; + + /* will enable all the needed filter flags in be_open() */ + status = be_if_create(adapter); + if (status) + goto err; + + /* Updating real_num_tx/rx_queues() requires rtnl_lock() */ + rtnl_lock(); + status = be_setup_queues(adapter); + rtnl_unlock(); + if (status) + goto err; + + be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0); + + status = be_mac_setup(adapter); + if (status) + goto err; + + be_cmd_get_fw_ver(adapter); + dev_info(dev, "FW version is %s\n", adapter->fw_ver); + + if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) { + dev_err(dev, "Firmware on card is old(%s), IRQs may not work", + adapter->fw_ver); + dev_err(dev, "Please upgrade firmware to version >= 4.0\n"); + } + + status = be_cmd_set_flow_control(adapter, adapter->tx_fc, + adapter->rx_fc); + if (status) + be_cmd_get_flow_control(adapter, &adapter->tx_fc, + &adapter->rx_fc); + + dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n", + adapter->tx_fc, adapter->rx_fc); + + if (be_physfn(adapter)) + be_cmd_set_logical_link_config(adapter, + IFLA_VF_LINK_STATE_AUTO, 0); + + /* BE3 EVB echoes broadcast/multicast packets back to PF's vport + * confusing a linux bridge or OVS that it might be connected to. + * Set the EVB to PASSTHRU mode which effectively disables the EVB + * when SRIOV is not enabled. + */ + if (BE3_chip(adapter)) + be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle, + PORT_FWD_TYPE_PASSTHRU, 0); + + if (adapter->num_vfs) + be_vf_setup(adapter); + + status = be_cmd_get_phy_info(adapter); + if (!status && be_pause_supported(adapter)) + adapter->phy.fc_autoneg = 1; + + if (be_physfn(adapter) && !lancer_chip(adapter)) + be_cmd_set_features(adapter); + + be_schedule_worker(adapter); + adapter->flags |= BE_FLAGS_SETUP_DONE; + return 0; +err: + be_clear(adapter); + return status; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void be_netpoll(struct net_device *netdev) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_eq_obj *eqo; + int i; + + for_all_evt_queues(adapter, eqo, i) { + be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0); + napi_schedule(&eqo->napi); + } +} +#endif + +int be_load_fw(struct be_adapter *adapter, u8 *fw_file) +{ + const struct firmware *fw; + int status; + + if (!netif_running(adapter->netdev)) { + dev_err(&adapter->pdev->dev, + "Firmware load not allowed (interface is down)\n"); + return -ENETDOWN; + } + + status = request_firmware(&fw, fw_file, &adapter->pdev->dev); + if (status) + goto fw_exit; + + dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file); + + if (lancer_chip(adapter)) + status = lancer_fw_download(adapter, fw); + else + status = be_fw_download(adapter, fw); + + if (!status) + be_cmd_get_fw_ver(adapter); + +fw_exit: + release_firmware(fw); + return status; +} + +static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, + u16 flags) +{ + struct be_adapter *adapter = netdev_priv(dev); + struct nlattr *attr, *br_spec; + int rem; + int status = 0; + u16 mode = 0; + + if (!sriov_enabled(adapter)) + return -EOPNOTSUPP; + + br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); + if (!br_spec) + return -EINVAL; + + nla_for_each_nested(attr, br_spec, rem) { + if (nla_type(attr) != IFLA_BRIDGE_MODE) + continue; + + if (nla_len(attr) < sizeof(mode)) + return -EINVAL; + + mode = nla_get_u16(attr); + if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA) + return -EOPNOTSUPP; + + if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB) + return -EINVAL; + + status = be_cmd_set_hsw_config(adapter, 0, 0, + adapter->if_handle, + mode == BRIDGE_MODE_VEPA ? + PORT_FWD_TYPE_VEPA : + PORT_FWD_TYPE_VEB, 0); + if (status) + goto err; + + dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n", + mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); + + return status; + } +err: + dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n", + mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); + + return status; +} + +static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, + struct net_device *dev, u32 filter_mask, + int nlflags) +{ + struct be_adapter *adapter = netdev_priv(dev); + int status = 0; + u8 hsw_mode; + + /* BE and Lancer chips support VEB mode only */ + if (BEx_chip(adapter) || lancer_chip(adapter)) { + /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */ + if (!pci_sriov_get_totalvfs(adapter->pdev)) + return 0; + hsw_mode = PORT_FWD_TYPE_VEB; + } else { + status = be_cmd_get_hsw_config(adapter, NULL, 0, + adapter->if_handle, &hsw_mode, + NULL); + if (status) + return 0; + + if (hsw_mode == PORT_FWD_TYPE_PASSTHRU) + return 0; + } + + return ndo_dflt_bridge_getlink(skb, pid, seq, dev, + hsw_mode == PORT_FWD_TYPE_VEPA ? + BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB, + 0, 0, nlflags, filter_mask, NULL); +} + +static struct be_cmd_work *be_alloc_work(struct be_adapter *adapter, + void (*func)(struct work_struct *)) +{ + struct be_cmd_work *work; + + work = kzalloc(sizeof(*work), GFP_ATOMIC); + if (!work) { + dev_err(&adapter->pdev->dev, + "be_work memory allocation failed\n"); + return NULL; + } + + INIT_WORK(&work->work, func); + work->adapter = adapter; + return work; +} + +/* VxLAN offload Notes: + * + * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't + * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload + * is expected to work across all types of IP tunnels once exported. Skyhawk + * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN + * offloads in hw_enc_features only when a VxLAN port is added. If other (non + * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for + * those other tunnels are unexported on the fly through ndo_features_check(). + * + * Skyhawk supports VxLAN offloads only for one UDP dport. So, if the stack + * adds more than one port, disable offloads and re-enable them again when + * there's only one port left. We maintain a list of ports for this purpose. + */ +static void be_work_add_vxlan_port(struct work_struct *work) +{ + struct be_cmd_work *cmd_work = + container_of(work, struct be_cmd_work, work); + struct be_adapter *adapter = cmd_work->adapter; + struct device *dev = &adapter->pdev->dev; + __be16 port = cmd_work->info.vxlan_port; + struct be_vxlan_port *vxlan_port; + int status; + + /* Bump up the alias count if it is an existing port */ + list_for_each_entry(vxlan_port, &adapter->vxlan_port_list, list) { + if (vxlan_port->port == port) { + vxlan_port->port_aliases++; + goto done; + } + } + + /* Add a new port to our list. We don't need a lock here since port + * add/delete are done only in the context of a single-threaded work + * queue (be_wq). + */ + vxlan_port = kzalloc(sizeof(*vxlan_port), GFP_KERNEL); + if (!vxlan_port) + goto done; + + vxlan_port->port = port; + INIT_LIST_HEAD(&vxlan_port->list); + list_add_tail(&vxlan_port->list, &adapter->vxlan_port_list); + adapter->vxlan_port_count++; + + if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) { + dev_info(dev, + "Only one UDP port supported for VxLAN offloads\n"); + dev_info(dev, "Disabling VxLAN offloads\n"); + goto err; + } + + if (adapter->vxlan_port_count > 1) + goto done; + + status = be_enable_vxlan_offloads(adapter); + if (!status) + goto done; + +err: + be_disable_vxlan_offloads(adapter); +done: + kfree(cmd_work); + return; +} + +static void be_work_del_vxlan_port(struct work_struct *work) +{ + struct be_cmd_work *cmd_work = + container_of(work, struct be_cmd_work, work); + struct be_adapter *adapter = cmd_work->adapter; + __be16 port = cmd_work->info.vxlan_port; + struct be_vxlan_port *vxlan_port; + + /* Nothing to be done if a port alias is being deleted */ + list_for_each_entry(vxlan_port, &adapter->vxlan_port_list, list) { + if (vxlan_port->port == port) { + if (vxlan_port->port_aliases) { + vxlan_port->port_aliases--; + goto done; + } + break; + } + } + + /* No port aliases left; delete the port from the list */ + list_del(&vxlan_port->list); + adapter->vxlan_port_count--; + + /* Disable VxLAN offload if this is the offloaded port */ + if (adapter->vxlan_port == vxlan_port->port) { + WARN_ON(adapter->vxlan_port_count); + be_disable_vxlan_offloads(adapter); + dev_info(&adapter->pdev->dev, + "Disabled VxLAN offloads for UDP port %d\n", + be16_to_cpu(port)); + goto out; + } + + /* If only 1 port is left, re-enable VxLAN offload */ + if (adapter->vxlan_port_count == 1) + be_enable_vxlan_offloads(adapter); + +out: + kfree(vxlan_port); +done: + kfree(cmd_work); +} + +static void be_cfg_vxlan_port(struct net_device *netdev, + struct udp_tunnel_info *ti, + void (*func)(struct work_struct *)) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct be_cmd_work *cmd_work; + + if (ti->type != UDP_TUNNEL_TYPE_VXLAN) + return; + + if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter)) + return; + + cmd_work = be_alloc_work(adapter, func); + if (cmd_work) { + cmd_work->info.vxlan_port = ti->port; + queue_work(be_wq, &cmd_work->work); + } +} + +static void be_del_vxlan_port(struct net_device *netdev, + struct udp_tunnel_info *ti) +{ + be_cfg_vxlan_port(netdev, ti, be_work_del_vxlan_port); +} + +static void be_add_vxlan_port(struct net_device *netdev, + struct udp_tunnel_info *ti) +{ + be_cfg_vxlan_port(netdev, ti, be_work_add_vxlan_port); +} + +static netdev_features_t be_features_check(struct sk_buff *skb, + struct net_device *dev, + netdev_features_t features) +{ + struct be_adapter *adapter = netdev_priv(dev); + u8 l4_hdr = 0; + + if (skb_is_gso(skb)) { + /* IPv6 TSO requests with extension hdrs are a problem + * to Lancer and BE3 HW. Disable TSO6 feature. + */ + if (!skyhawk_chip(adapter) && is_ipv6_ext_hdr(skb)) + features &= ~NETIF_F_TSO6; + + /* Lancer cannot handle the packet with MSS less than 256. + * Also it can't handle a TSO packet with a single segment + * Disable the GSO support in such cases + */ + if (lancer_chip(adapter) && + (skb_shinfo(skb)->gso_size < 256 || + skb_shinfo(skb)->gso_segs == 1)) + features &= ~NETIF_F_GSO_MASK; + } + + /* The code below restricts offload features for some tunneled and + * Q-in-Q packets. + * Offload features for normal (non tunnel) packets are unchanged. + */ + features = vlan_features_check(skb, features); + if (!skb->encapsulation || + !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)) + return features; + + /* It's an encapsulated packet and VxLAN offloads are enabled. We + * should disable tunnel offload features if it's not a VxLAN packet, + * as tunnel offloads have been enabled only for VxLAN. This is done to + * allow other tunneled traffic like GRE work fine while VxLAN + * offloads are configured in Skyhawk-R. + */ + switch (vlan_get_protocol(skb)) { + case htons(ETH_P_IP): + l4_hdr = ip_hdr(skb)->protocol; + break; + case htons(ETH_P_IPV6): + l4_hdr = ipv6_hdr(skb)->nexthdr; + break; + default: + return features; + } + + if (l4_hdr != IPPROTO_UDP || + skb->inner_protocol_type != ENCAP_TYPE_ETHER || + skb->inner_protocol != htons(ETH_P_TEB) || + skb_inner_mac_header(skb) - skb_transport_header(skb) != + sizeof(struct udphdr) + sizeof(struct vxlanhdr) || + !adapter->vxlan_port || + udp_hdr(skb)->dest != adapter->vxlan_port) + return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); + + return features; +} + +static int be_get_phys_port_id(struct net_device *dev, + struct netdev_phys_item_id *ppid) +{ + int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1; + struct be_adapter *adapter = netdev_priv(dev); + u8 *id; + + if (MAX_PHYS_ITEM_ID_LEN < id_len) + return -ENOSPC; + + ppid->id[0] = adapter->hba_port_num + 1; + id = &ppid->id[1]; + for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0; + i--, id += CNTL_SERIAL_NUM_WORD_SZ) + memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ); + + ppid->id_len = id_len; + + return 0; +} + +static void be_set_rx_mode(struct net_device *dev) +{ + struct be_adapter *adapter = netdev_priv(dev); + struct be_cmd_work *work; + + work = be_alloc_work(adapter, be_work_set_rx_mode); + if (work) + queue_work(be_wq, &work->work); +} + +static const struct net_device_ops be_netdev_ops = { + .ndo_open = be_open, + .ndo_stop = be_close, + .ndo_start_xmit = be_xmit, + .ndo_set_rx_mode = be_set_rx_mode, + .ndo_set_mac_address = be_mac_addr_set, + .ndo_get_stats64 = be_get_stats64, + .ndo_validate_addr = eth_validate_addr, + .ndo_vlan_rx_add_vid = be_vlan_add_vid, + .ndo_vlan_rx_kill_vid = be_vlan_rem_vid, + .ndo_set_vf_mac = be_set_vf_mac, + .ndo_set_vf_vlan = be_set_vf_vlan, + .ndo_set_vf_rate = be_set_vf_tx_rate, + .ndo_get_vf_config = be_get_vf_config, + .ndo_set_vf_link_state = be_set_vf_link_state, + .ndo_set_vf_spoofchk = be_set_vf_spoofchk, + .ndo_tx_timeout = be_tx_timeout, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = be_netpoll, +#endif + .ndo_bridge_setlink = be_ndo_bridge_setlink, + .ndo_bridge_getlink = be_ndo_bridge_getlink, + .ndo_udp_tunnel_add = be_add_vxlan_port, + .ndo_udp_tunnel_del = be_del_vxlan_port, + .ndo_features_check = be_features_check, + .ndo_get_phys_port_id = be_get_phys_port_id, +}; + +static void be_netdev_init(struct net_device *netdev) +{ + struct be_adapter *adapter = netdev_priv(netdev); + + netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | + NETIF_F_HW_VLAN_CTAG_TX; + if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS)) + netdev->hw_features |= NETIF_F_RXHASH; + + netdev->features |= netdev->hw_features | + NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER; + + netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + + netdev->priv_flags |= IFF_UNICAST_FLT; + + netdev->flags |= IFF_MULTICAST; + + netif_set_gso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN); + + netdev->netdev_ops = &be_netdev_ops; + + netdev->ethtool_ops = &be_ethtool_ops; + + /* MTU range: 256 - 9000 */ + netdev->min_mtu = BE_MIN_MTU; + netdev->max_mtu = BE_MAX_MTU; +} + +static void be_cleanup(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + + rtnl_lock(); + netif_device_detach(netdev); + if (netif_running(netdev)) + be_close(netdev); + rtnl_unlock(); + + be_clear(adapter); +} + +static int be_resume(struct be_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + int status; + + status = be_setup(adapter); + if (status) + return status; + + rtnl_lock(); + if (netif_running(netdev)) + status = be_open(netdev); + rtnl_unlock(); + + if (status) + return status; + + netif_device_attach(netdev); + + return 0; +} + +static void be_soft_reset(struct be_adapter *adapter) +{ + u32 val; + + dev_info(&adapter->pdev->dev, "Initiating chip soft reset\n"); + val = ioread32(adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET); + val |= SLIPORT_SOFTRESET_SR_MASK; + iowrite32(val, adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET); +} + +static bool be_err_is_recoverable(struct be_adapter *adapter) +{ + struct be_error_recovery *err_rec = &adapter->error_recovery; + unsigned long initial_idle_time = + msecs_to_jiffies(ERR_RECOVERY_IDLE_TIME); + unsigned long recovery_interval = + msecs_to_jiffies(ERR_RECOVERY_INTERVAL); + u16 ue_err_code; + u32 val; + + val = be_POST_stage_get(adapter); + if ((val & POST_STAGE_RECOVERABLE_ERR) != POST_STAGE_RECOVERABLE_ERR) + return false; + ue_err_code = val & POST_ERR_RECOVERY_CODE_MASK; + if (ue_err_code == 0) + return false; + + dev_err(&adapter->pdev->dev, "Recoverable HW error code: 0x%x\n", + ue_err_code); + + if (time_before_eq(jiffies - err_rec->probe_time, initial_idle_time)) { + dev_err(&adapter->pdev->dev, + "Cannot recover within %lu sec from driver load\n", + jiffies_to_msecs(initial_idle_time) / MSEC_PER_SEC); + return false; + } + + if (err_rec->last_recovery_time && time_before_eq( + jiffies - err_rec->last_recovery_time, recovery_interval)) { + dev_err(&adapter->pdev->dev, + "Cannot recover within %lu sec from last recovery\n", + jiffies_to_msecs(recovery_interval) / MSEC_PER_SEC); + return false; + } + + if (ue_err_code == err_rec->last_err_code) { + dev_err(&adapter->pdev->dev, + "Cannot recover from a consecutive TPE error\n"); + return false; + } + + err_rec->last_recovery_time = jiffies; + err_rec->last_err_code = ue_err_code; + return true; +} + +static int be_tpe_recover(struct be_adapter *adapter) +{ + struct be_error_recovery *err_rec = &adapter->error_recovery; + int status = -EAGAIN; + u32 val; + + switch (err_rec->recovery_state) { + case ERR_RECOVERY_ST_NONE: + err_rec->recovery_state = ERR_RECOVERY_ST_DETECT; + err_rec->resched_delay = ERR_RECOVERY_UE_DETECT_DURATION; + break; + + case ERR_RECOVERY_ST_DETECT: + val = be_POST_stage_get(adapter); + if ((val & POST_STAGE_RECOVERABLE_ERR) != + POST_STAGE_RECOVERABLE_ERR) { + dev_err(&adapter->pdev->dev, + "Unrecoverable HW error detected: 0x%x\n", val); + status = -EINVAL; + err_rec->resched_delay = 0; + break; + } + + dev_err(&adapter->pdev->dev, "Recoverable HW error detected\n"); + + /* Only PF0 initiates Chip Soft Reset. But PF0 must wait UE2SR + * milliseconds before it checks for final error status in + * SLIPORT_SEMAPHORE to determine if recovery criteria is met. + * If it does, then PF0 initiates a Soft Reset. + */ + if (adapter->pf_num == 0) { + err_rec->recovery_state = ERR_RECOVERY_ST_RESET; + err_rec->resched_delay = err_rec->ue_to_reset_time - + ERR_RECOVERY_UE_DETECT_DURATION; + break; + } + + err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL; + err_rec->resched_delay = err_rec->ue_to_poll_time - + ERR_RECOVERY_UE_DETECT_DURATION; + break; + + case ERR_RECOVERY_ST_RESET: + if (!be_err_is_recoverable(adapter)) { + dev_err(&adapter->pdev->dev, + "Failed to meet recovery criteria\n"); + status = -EIO; + err_rec->resched_delay = 0; + break; + } + be_soft_reset(adapter); + err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL; + err_rec->resched_delay = err_rec->ue_to_poll_time - + err_rec->ue_to_reset_time; + break; + + case ERR_RECOVERY_ST_PRE_POLL: + err_rec->recovery_state = ERR_RECOVERY_ST_REINIT; + err_rec->resched_delay = 0; + status = 0; /* done */ + break; + + default: + status = -EINVAL; + err_rec->resched_delay = 0; + break; + } + + return status; +} + +static int be_err_recover(struct be_adapter *adapter) +{ + int status; + + if (!lancer_chip(adapter)) { + if (!adapter->error_recovery.recovery_supported || + adapter->priv_flags & BE_DISABLE_TPE_RECOVERY) + return -EIO; + status = be_tpe_recover(adapter); + if (status) + goto err; + } + + /* Wait for adapter to reach quiescent state before + * destroying queues + */ + status = be_fw_wait_ready(adapter); + if (status) + goto err; + + adapter->flags |= BE_FLAGS_TRY_RECOVERY; + + be_cleanup(adapter); + + status = be_resume(adapter); + if (status) + goto err; + + adapter->flags &= ~BE_FLAGS_TRY_RECOVERY; + +err: + return status; +} + +static void be_err_detection_task(struct work_struct *work) +{ + struct be_error_recovery *err_rec = + container_of(work, struct be_error_recovery, + err_detection_work.work); + struct be_adapter *adapter = + container_of(err_rec, struct be_adapter, + error_recovery); + u32 resched_delay = ERR_RECOVERY_DETECTION_DELAY; + struct device *dev = &adapter->pdev->dev; + int recovery_status; + + be_detect_error(adapter); + if (!be_check_error(adapter, BE_ERROR_HW)) + goto reschedule_task; + + recovery_status = be_err_recover(adapter); + if (!recovery_status) { + err_rec->recovery_retries = 0; + err_rec->recovery_state = ERR_RECOVERY_ST_NONE; + dev_info(dev, "Adapter recovery successful\n"); + goto reschedule_task; + } else if (!lancer_chip(adapter) && err_rec->resched_delay) { + /* BEx/SH recovery state machine */ + if (adapter->pf_num == 0 && + err_rec->recovery_state > ERR_RECOVERY_ST_DETECT) + dev_err(&adapter->pdev->dev, + "Adapter recovery in progress\n"); + resched_delay = err_rec->resched_delay; + goto reschedule_task; + } else if (lancer_chip(adapter) && be_virtfn(adapter)) { + /* For VFs, check if PF have allocated resources + * every second. + */ + dev_err(dev, "Re-trying adapter recovery\n"); + goto reschedule_task; + } else if (lancer_chip(adapter) && err_rec->recovery_retries++ < + ERR_RECOVERY_MAX_RETRY_COUNT) { + /* In case of another error during recovery, it takes 30 sec + * for adapter to come out of error. Retry error recovery after + * this time interval. + */ + dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n"); + resched_delay = ERR_RECOVERY_RETRY_DELAY; + goto reschedule_task; + } else { + dev_err(dev, "Adapter recovery failed\n"); + dev_err(dev, "Please reboot server to recover\n"); + } + + return; + +reschedule_task: + be_schedule_err_detection(adapter, resched_delay); +} + +static void be_log_sfp_info(struct be_adapter *adapter) +{ + int status; + + status = be_cmd_query_sfp_info(adapter); + if (!status) { + dev_err(&adapter->pdev->dev, + "Port %c: %s Vendor: %s part no: %s", + adapter->port_name, + be_misconfig_evt_port_state[adapter->phy_state], + adapter->phy.vendor_name, + adapter->phy.vendor_pn); + } + adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED; +} + +static void be_worker(struct work_struct *work) +{ + struct be_adapter *adapter = + container_of(work, struct be_adapter, work.work); + struct be_rx_obj *rxo; + int i; + + if (be_physfn(adapter) && + MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0) + be_cmd_get_die_temperature(adapter); + + /* when interrupts are not yet enabled, just reap any pending + * mcc completions + */ + if (!netif_running(adapter->netdev)) { + local_bh_disable(); + be_process_mcc(adapter); + local_bh_enable(); + goto reschedule; + } + + if (!adapter->stats_cmd_sent) { + if (lancer_chip(adapter)) + lancer_cmd_get_pport_stats(adapter, + &adapter->stats_cmd); + else + be_cmd_get_stats(adapter, &adapter->stats_cmd); + } + + for_all_rx_queues(adapter, rxo, i) { + /* Replenish RX-queues starved due to memory + * allocation failures. + */ + if (rxo->rx_post_starved) + be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST); + } + + /* EQ-delay update for Skyhawk is done while notifying EQ */ + if (!skyhawk_chip(adapter)) + be_eqd_update(adapter, false); + + if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED) + be_log_sfp_info(adapter); + +reschedule: + adapter->work_counter++; + queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000)); +} + +static void be_unmap_pci_bars(struct be_adapter *adapter) +{ + if (adapter->csr) + pci_iounmap(adapter->pdev, adapter->csr); + if (adapter->db) + pci_iounmap(adapter->pdev, adapter->db); + if (adapter->pcicfg && adapter->pcicfg_mapped) + pci_iounmap(adapter->pdev, adapter->pcicfg); +} + +static int db_bar(struct be_adapter *adapter) +{ + if (lancer_chip(adapter) || be_virtfn(adapter)) + return 0; + else + return 4; +} + +static int be_roce_map_pci_bars(struct be_adapter *adapter) +{ + if (skyhawk_chip(adapter)) { + adapter->roce_db.size = 4096; + adapter->roce_db.io_addr = pci_resource_start(adapter->pdev, + db_bar(adapter)); + adapter->roce_db.total_size = pci_resource_len(adapter->pdev, + db_bar(adapter)); + } + return 0; +} + +static int be_map_pci_bars(struct be_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + u8 __iomem *addr; + u32 sli_intf; + + pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf); + adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >> + SLI_INTF_FAMILY_SHIFT; + adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0; + + if (BEx_chip(adapter) && be_physfn(adapter)) { + adapter->csr = pci_iomap(pdev, 2, 0); + if (!adapter->csr) + return -ENOMEM; + } + + addr = pci_iomap(pdev, db_bar(adapter), 0); + if (!addr) + goto pci_map_err; + adapter->db = addr; + + if (skyhawk_chip(adapter) || BEx_chip(adapter)) { + if (be_physfn(adapter)) { + /* PCICFG is the 2nd BAR in BE2 */ + addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0); + if (!addr) + goto pci_map_err; + adapter->pcicfg = addr; + adapter->pcicfg_mapped = true; + } else { + adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET; + adapter->pcicfg_mapped = false; + } + } + + be_roce_map_pci_bars(adapter); + return 0; + +pci_map_err: + dev_err(&pdev->dev, "Error in mapping PCI BARs\n"); + be_unmap_pci_bars(adapter); + return -ENOMEM; +} + +static void be_drv_cleanup(struct be_adapter *adapter) +{ + struct be_dma_mem *mem = &adapter->mbox_mem_alloced; + struct device *dev = &adapter->pdev->dev; + + if (mem->va) + dma_free_coherent(dev, mem->size, mem->va, mem->dma); + + mem = &adapter->rx_filter; + if (mem->va) + dma_free_coherent(dev, mem->size, mem->va, mem->dma); + + mem = &adapter->stats_cmd; + if (mem->va) + dma_free_coherent(dev, mem->size, mem->va, mem->dma); +} + +/* Allocate and initialize various fields in be_adapter struct */ +static int be_drv_init(struct be_adapter *adapter) +{ + struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced; + struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem; + struct be_dma_mem *rx_filter = &adapter->rx_filter; + struct be_dma_mem *stats_cmd = &adapter->stats_cmd; + struct device *dev = &adapter->pdev->dev; + int status = 0; + + mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16; + mbox_mem_alloc->va = dma_zalloc_coherent(dev, mbox_mem_alloc->size, + &mbox_mem_alloc->dma, + GFP_KERNEL); + if (!mbox_mem_alloc->va) + return -ENOMEM; + + mbox_mem_align->size = sizeof(struct be_mcc_mailbox); + mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16); + mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16); + + rx_filter->size = sizeof(struct be_cmd_req_rx_filter); + rx_filter->va = dma_zalloc_coherent(dev, rx_filter->size, + &rx_filter->dma, GFP_KERNEL); + if (!rx_filter->va) { + status = -ENOMEM; + goto free_mbox; + } + + if (lancer_chip(adapter)) + stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats); + else if (BE2_chip(adapter)) + stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0); + else if (BE3_chip(adapter)) + stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1); + else + stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2); + stats_cmd->va = dma_zalloc_coherent(dev, stats_cmd->size, + &stats_cmd->dma, GFP_KERNEL); + if (!stats_cmd->va) { + status = -ENOMEM; + goto free_rx_filter; + } + + mutex_init(&adapter->mbox_lock); + mutex_init(&adapter->mcc_lock); + mutex_init(&adapter->rx_filter_lock); + spin_lock_init(&adapter->mcc_cq_lock); + init_completion(&adapter->et_cmd_compl); + + pci_save_state(adapter->pdev); + + INIT_DELAYED_WORK(&adapter->work, be_worker); + + adapter->error_recovery.recovery_state = ERR_RECOVERY_ST_NONE; + adapter->error_recovery.resched_delay = 0; + INIT_DELAYED_WORK(&adapter->error_recovery.err_detection_work, + be_err_detection_task); + + adapter->rx_fc = true; + adapter->tx_fc = true; + + /* Must be a power of 2 or else MODULO will BUG_ON */ + adapter->be_get_temp_freq = 64; + + INIT_LIST_HEAD(&adapter->vxlan_port_list); + return 0; + +free_rx_filter: + dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma); +free_mbox: + dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va, + mbox_mem_alloc->dma); + return status; +} + +static void be_remove(struct pci_dev *pdev) +{ + struct be_adapter *adapter = pci_get_drvdata(pdev); + + if (!adapter) + return; + + be_roce_dev_remove(adapter); + be_intr_set(adapter, false); + + be_cancel_err_detection(adapter); + + unregister_netdev(adapter->netdev); + + be_clear(adapter); + + if (!pci_vfs_assigned(adapter->pdev)) + be_cmd_reset_function(adapter); + + /* tell fw we're done with firing cmds */ + be_cmd_fw_clean(adapter); + + be_unmap_pci_bars(adapter); + be_drv_cleanup(adapter); + + pci_disable_pcie_error_reporting(pdev); + + pci_release_regions(pdev); + pci_disable_device(pdev); + + free_netdev(adapter->netdev); +} + +static ssize_t be_hwmon_show_temp(struct device *dev, + struct device_attribute *dev_attr, + char *buf) +{ + struct be_adapter *adapter = dev_get_drvdata(dev); + + /* Unit: millidegree Celsius */ + if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP) + return -EIO; + else + return sprintf(buf, "%u\n", + adapter->hwmon_info.be_on_die_temp * 1000); +} + +static SENSOR_DEVICE_ATTR(temp1_input, 0444, + be_hwmon_show_temp, NULL, 1); + +static struct attribute *be_hwmon_attrs[] = { + &sensor_dev_attr_temp1_input.dev_attr.attr, + NULL +}; + +ATTRIBUTE_GROUPS(be_hwmon); + +static char *mc_name(struct be_adapter *adapter) +{ + char *str = ""; /* default */ + + switch (adapter->mc_type) { + case UMC: + str = "UMC"; + break; + case FLEX10: + str = "FLEX10"; + break; + case vNIC1: + str = "vNIC-1"; + break; + case nPAR: + str = "nPAR"; + break; + case UFP: + str = "UFP"; + break; + case vNIC2: + str = "vNIC-2"; + break; + default: + str = ""; + } + + return str; +} + +static inline char *func_name(struct be_adapter *adapter) +{ + return be_physfn(adapter) ? "PF" : "VF"; +} + +static inline char *nic_name(struct pci_dev *pdev) +{ + switch (pdev->device) { + case OC_DEVICE_ID1: + return OC_NAME; + case OC_DEVICE_ID2: + return OC_NAME_BE; + case OC_DEVICE_ID3: + case OC_DEVICE_ID4: + return OC_NAME_LANCER; + case BE_DEVICE_ID2: + return BE3_NAME; + case OC_DEVICE_ID5: + case OC_DEVICE_ID6: + return OC_NAME_SH; + default: + return BE_NAME; + } +} + +static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id) +{ + struct be_adapter *adapter; + struct net_device *netdev; + int status = 0; + + dev_info(&pdev->dev, "%s version is %s\n", DRV_NAME, DRV_VER); + + status = pci_enable_device(pdev); + if (status) + goto do_none; + + status = pci_request_regions(pdev, DRV_NAME); + if (status) + goto disable_dev; + pci_set_master(pdev); + + netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS); + if (!netdev) { + status = -ENOMEM; + goto rel_reg; + } + adapter = netdev_priv(netdev); + adapter->pdev = pdev; + pci_set_drvdata(pdev, adapter); + adapter->netdev = netdev; + SET_NETDEV_DEV(netdev, &pdev->dev); + + status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (!status) { + netdev->features |= NETIF_F_HIGHDMA; + } else { + status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (status) { + dev_err(&pdev->dev, "Could not set PCI DMA Mask\n"); + goto free_netdev; + } + } + + status = pci_enable_pcie_error_reporting(pdev); + if (!status) + dev_info(&pdev->dev, "PCIe error reporting enabled\n"); + + status = be_map_pci_bars(adapter); + if (status) + goto free_netdev; + + status = be_drv_init(adapter); + if (status) + goto unmap_bars; + + status = be_setup(adapter); + if (status) + goto drv_cleanup; + + be_netdev_init(netdev); + status = register_netdev(netdev); + if (status != 0) + goto unsetup; + + be_roce_dev_add(adapter); + + be_schedule_err_detection(adapter, ERR_DETECTION_DELAY); + adapter->error_recovery.probe_time = jiffies; + + /* On Die temperature not supported for VF. */ + if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) { + adapter->hwmon_info.hwmon_dev = + devm_hwmon_device_register_with_groups(&pdev->dev, + DRV_NAME, + adapter, + be_hwmon_groups); + adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP; + } + + dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev), + func_name(adapter), mc_name(adapter), adapter->port_name); + + return 0; + +unsetup: + be_clear(adapter); +drv_cleanup: + be_drv_cleanup(adapter); +unmap_bars: + be_unmap_pci_bars(adapter); +free_netdev: + pci_disable_pcie_error_reporting(pdev); + free_netdev(netdev); +rel_reg: + pci_release_regions(pdev); +disable_dev: + pci_disable_device(pdev); +do_none: + dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev)); + return status; +} + +static int be_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct be_adapter *adapter = pci_get_drvdata(pdev); + + be_intr_set(adapter, false); + be_cancel_err_detection(adapter); + + be_cleanup(adapter); + + pci_save_state(pdev); + pci_disable_device(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + return 0; +} + +static int be_pci_resume(struct pci_dev *pdev) +{ + struct be_adapter *adapter = pci_get_drvdata(pdev); + int status = 0; + + status = pci_enable_device(pdev); + if (status) + return status; + + pci_restore_state(pdev); + + status = be_resume(adapter); + if (status) + return status; + + be_schedule_err_detection(adapter, ERR_DETECTION_DELAY); + + return 0; +} + +/* + * An FLR will stop BE from DMAing any data. + */ +static void be_shutdown(struct pci_dev *pdev) +{ + struct be_adapter *adapter = pci_get_drvdata(pdev); + + if (!adapter) + return; + + be_roce_dev_shutdown(adapter); + cancel_delayed_work_sync(&adapter->work); + be_cancel_err_detection(adapter); + + netif_device_detach(adapter->netdev); + + be_cmd_reset_function(adapter); + + pci_disable_device(pdev); +} + +static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct be_adapter *adapter = pci_get_drvdata(pdev); + + dev_err(&adapter->pdev->dev, "EEH error detected\n"); + + be_roce_dev_remove(adapter); + + if (!be_check_error(adapter, BE_ERROR_EEH)) { + be_set_error(adapter, BE_ERROR_EEH); + + be_cancel_err_detection(adapter); + + be_cleanup(adapter); + } + + if (state == pci_channel_io_perm_failure) + return PCI_ERS_RESULT_DISCONNECT; + + pci_disable_device(pdev); + + /* The error could cause the FW to trigger a flash debug dump. + * Resetting the card while flash dump is in progress + * can cause it not to recover; wait for it to finish. + * Wait only for first function as it is needed only once per + * adapter. + */ + if (pdev->devfn == 0) + ssleep(30); + + return PCI_ERS_RESULT_NEED_RESET; +} + +static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev) +{ + struct be_adapter *adapter = pci_get_drvdata(pdev); + int status; + + dev_info(&adapter->pdev->dev, "EEH reset\n"); + + status = pci_enable_device(pdev); + if (status) + return PCI_ERS_RESULT_DISCONNECT; + + pci_set_master(pdev); + pci_restore_state(pdev); + + /* Check if card is ok and fw is ready */ + dev_info(&adapter->pdev->dev, + "Waiting for FW to be ready after EEH reset\n"); + status = be_fw_wait_ready(adapter); + if (status) + return PCI_ERS_RESULT_DISCONNECT; + + pci_cleanup_aer_uncorrect_error_status(pdev); + be_clear_error(adapter, BE_CLEAR_ALL); + return PCI_ERS_RESULT_RECOVERED; +} + +static void be_eeh_resume(struct pci_dev *pdev) +{ + int status = 0; + struct be_adapter *adapter = pci_get_drvdata(pdev); + + dev_info(&adapter->pdev->dev, "EEH resume\n"); + + pci_save_state(pdev); + + status = be_resume(adapter); + if (status) + goto err; + + be_roce_dev_add(adapter); + + be_schedule_err_detection(adapter, ERR_DETECTION_DELAY); + return; +err: + dev_err(&adapter->pdev->dev, "EEH resume failed\n"); +} + +static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) +{ + struct be_adapter *adapter = pci_get_drvdata(pdev); + struct be_resources vft_res = {0}; + int status; + + if (!num_vfs) + be_vf_clear(adapter); + + adapter->num_vfs = num_vfs; + + if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) { + dev_warn(&pdev->dev, + "Cannot disable VFs while they are assigned\n"); + return -EBUSY; + } + + /* When the HW is in SRIOV capable configuration, the PF-pool resources + * are equally distributed across the max-number of VFs. The user may + * request only a subset of the max-vfs to be enabled. + * Based on num_vfs, redistribute the resources across num_vfs so that + * each VF will have access to more number of resources. + * This facility is not available in BE3 FW. + * Also, this is done by FW in Lancer chip. + */ + if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) { + be_calculate_vf_res(adapter, adapter->num_vfs, + &vft_res); + status = be_cmd_set_sriov_config(adapter, adapter->pool_res, + adapter->num_vfs, &vft_res); + if (status) + dev_err(&pdev->dev, + "Failed to optimize SR-IOV resources\n"); + } + + status = be_get_resources(adapter); + if (status) + return be_cmd_status(status); + + /* Updating real_num_tx/rx_queues() requires rtnl_lock() */ + rtnl_lock(); + status = be_update_queues(adapter); + rtnl_unlock(); + if (status) + return be_cmd_status(status); + + if (adapter->num_vfs) + status = be_vf_setup(adapter); + + if (!status) + return adapter->num_vfs; + + return 0; +} + +static const struct pci_error_handlers be_eeh_handlers = { + .error_detected = be_eeh_err_detected, + .slot_reset = be_eeh_reset, + .resume = be_eeh_resume, +}; + +static struct pci_driver be_driver = { + .name = DRV_NAME, + .id_table = be_dev_ids, + .probe = be_probe, + .remove = be_remove, + .suspend = be_suspend, + .resume = be_pci_resume, + .shutdown = be_shutdown, + .sriov_configure = be_pci_sriov_configure, + .err_handler = &be_eeh_handlers +}; + +static int __init be_init_module(void) +{ + int status; + + if (rx_frag_size != 8192 && rx_frag_size != 4096 && + rx_frag_size != 2048) { + printk(KERN_WARNING DRV_NAME + " : Module param rx_frag_size must be 2048/4096/8192." + " Using 2048\n"); + rx_frag_size = 2048; + } + + if (num_vfs > 0) { + pr_info(DRV_NAME " : Module param num_vfs is obsolete."); + pr_info(DRV_NAME " : Use sysfs method to enable VFs\n"); + } + + be_wq = create_singlethread_workqueue("be_wq"); + if (!be_wq) { + pr_warn(DRV_NAME "workqueue creation failed\n"); + return -1; + } + + be_err_recovery_workq = + create_singlethread_workqueue("be_err_recover"); + if (!be_err_recovery_workq) + pr_warn(DRV_NAME "Could not create error recovery workqueue\n"); + + status = pci_register_driver(&be_driver); + if (status) { + destroy_workqueue(be_wq); + be_destroy_err_recovery_workq(); + } + return status; +} +module_init(be_init_module); + +static void __exit be_exit_module(void) +{ + pci_unregister_driver(&be_driver); + + be_destroy_err_recovery_workq(); + + if (be_wq) + destroy_workqueue(be_wq); +} +module_exit(be_exit_module); |