diff options
Diffstat (limited to 'drivers/crypto/qat/qat_dh895xccvf/adf_drv.c')
| -rw-r--r-- | drivers/crypto/qat/qat_dh895xccvf/adf_drv.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c b/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c new file mode 100644 index 000000000..29999da71 --- /dev/null +++ b/drivers/crypto/qat/qat_dh895xccvf/adf_drv.c @@ -0,0 +1,251 @@ +// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) +/* Copyright(c) 2014 - 2020 Intel Corporation */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/fs.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/platform_device.h> +#include <linux/workqueue.h> +#include <linux/io.h> +#include <adf_accel_devices.h> +#include <adf_common_drv.h> +#include <adf_cfg.h> +#include "adf_dh895xccvf_hw_data.h" + +static const struct pci_device_id adf_pci_tbl[] = { + { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF), }, + { } +}; +MODULE_DEVICE_TABLE(pci, adf_pci_tbl); + +static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent); +static void adf_remove(struct pci_dev *dev); + +static struct pci_driver adf_driver = { + .id_table = adf_pci_tbl, + .name = ADF_DH895XCCVF_DEVICE_NAME, + .probe = adf_probe, + .remove = adf_remove, +}; + +static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev) +{ + pci_release_regions(accel_dev->accel_pci_dev.pci_dev); + pci_disable_device(accel_dev->accel_pci_dev.pci_dev); +} + +static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) +{ + struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev; + struct adf_accel_dev *pf; + int i; + + for (i = 0; i < ADF_PCI_MAX_BARS; i++) { + struct adf_bar *bar = &accel_pci_dev->pci_bars[i]; + + if (bar->virt_addr) + pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr); + } + + if (accel_dev->hw_device) { + switch (accel_pci_dev->pci_dev->device) { + case PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF: + adf_clean_hw_data_dh895xcciov(accel_dev->hw_device); + break; + default: + break; + } + kfree(accel_dev->hw_device); + accel_dev->hw_device = NULL; + } + adf_cfg_dev_remove(accel_dev); + debugfs_remove(accel_dev->debugfs_dir); + pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn); + adf_devmgr_rm_dev(accel_dev, pf); +} + +static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + struct adf_accel_dev *accel_dev; + struct adf_accel_dev *pf; + struct adf_accel_pci *accel_pci_dev; + struct adf_hw_device_data *hw_data; + char name[ADF_DEVICE_NAME_LENGTH]; + unsigned int i, bar_nr; + unsigned long bar_mask; + int ret; + + switch (ent->device) { + case PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF: + break; + default: + dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device); + return -ENODEV; + } + + accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL, + dev_to_node(&pdev->dev)); + if (!accel_dev) + return -ENOMEM; + + accel_dev->is_vf = true; + pf = adf_devmgr_pci_to_accel_dev(pdev->physfn); + accel_pci_dev = &accel_dev->accel_pci_dev; + accel_pci_dev->pci_dev = pdev; + + /* Add accel device to accel table */ + if (adf_devmgr_add_dev(accel_dev, pf)) { + dev_err(&pdev->dev, "Failed to add new accelerator device.\n"); + kfree(accel_dev); + return -EFAULT; + } + INIT_LIST_HEAD(&accel_dev->crypto_list); + + accel_dev->owner = THIS_MODULE; + /* Allocate and configure device configuration structure */ + hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL, + dev_to_node(&pdev->dev)); + if (!hw_data) { + ret = -ENOMEM; + goto out_err; + } + accel_dev->hw_device = hw_data; + adf_init_hw_data_dh895xcciov(accel_dev->hw_device); + + /* Get Accelerators and Accelerators Engines masks */ + hw_data->accel_mask = hw_data->get_accel_mask(hw_data); + hw_data->ae_mask = hw_data->get_ae_mask(hw_data); + accel_pci_dev->sku = hw_data->get_sku(hw_data); + + /* Create dev top level debugfs entry */ + snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX, + hw_data->dev_class->name, pci_name(pdev)); + + accel_dev->debugfs_dir = debugfs_create_dir(name, NULL); + + /* Create device configuration table */ + ret = adf_cfg_dev_add(accel_dev); + if (ret) + goto out_err; + + /* enable PCI device */ + if (pci_enable_device(pdev)) { + ret = -EFAULT; + goto out_err; + } + + /* set dma identifier */ + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { + if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) { + dev_err(&pdev->dev, "No usable DMA configuration\n"); + ret = -EFAULT; + goto out_err_disable; + } else { + pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + } + + } else { + pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); + } + + if (pci_request_regions(pdev, ADF_DH895XCCVF_DEVICE_NAME)) { + ret = -EFAULT; + goto out_err_disable; + } + + /* Find and map all the device's BARS */ + i = 0; + bar_mask = pci_select_bars(pdev, IORESOURCE_MEM); + for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) { + struct adf_bar *bar = &accel_pci_dev->pci_bars[i++]; + + bar->base_addr = pci_resource_start(pdev, bar_nr); + if (!bar->base_addr) + break; + bar->size = pci_resource_len(pdev, bar_nr); + bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0); + if (!bar->virt_addr) { + dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr); + ret = -EFAULT; + goto out_err_free_reg; + } + } + pci_set_master(pdev); + /* Completion for VF2PF request/response message exchange */ + init_completion(&accel_dev->vf.iov_msg_completion); + + ret = qat_crypto_dev_config(accel_dev); + if (ret) + goto out_err_free_reg; + + ret = adf_dev_init(accel_dev); + if (ret) + goto out_err_dev_shutdown; + + set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status); + + ret = adf_dev_start(accel_dev); + if (ret) + goto out_err_dev_stop; + + return ret; + +out_err_dev_stop: + adf_dev_stop(accel_dev); +out_err_dev_shutdown: + adf_dev_shutdown(accel_dev); +out_err_free_reg: + pci_release_regions(accel_pci_dev->pci_dev); +out_err_disable: + pci_disable_device(accel_pci_dev->pci_dev); +out_err: + adf_cleanup_accel(accel_dev); + kfree(accel_dev); + return ret; +} + +static void adf_remove(struct pci_dev *pdev) +{ + struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev); + + if (!accel_dev) { + pr_err("QAT: Driver removal failed\n"); + return; + } + adf_dev_stop(accel_dev); + adf_dev_shutdown(accel_dev); + adf_cleanup_accel(accel_dev); + adf_cleanup_pci_dev(accel_dev); + kfree(accel_dev); +} + +static int __init adfdrv_init(void) +{ + request_module("intel_qat"); + + if (pci_register_driver(&adf_driver)) { + pr_err("QAT: Driver initialization failed\n"); + return -EFAULT; + } + return 0; +} + +static void __exit adfdrv_release(void) +{ + pci_unregister_driver(&adf_driver); + adf_clean_vf_map(true); +} + +module_init(adfdrv_init); +module_exit(adfdrv_release); + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Intel"); +MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); +MODULE_VERSION(ADF_DRV_VERSION); |