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1// SPDX-License-Identifier: GPL-2.0-only2/* Copyright(c) 2023 Intel Corporation */3#include <linux/device.h>4#include <linux/module.h>5#include <linux/pci.h>6 7#include <adf_accel_devices.h>8#include <adf_gen4_hw_data.h>9#include <adf_gen4_config.h>10#include <adf_cfg.h>11#include <adf_common_drv.h>12#include <adf_dbgfs.h>13 14#include "adf_420xx_hw_data.h"15 16static const struct pci_device_id adf_pci_tbl[] = {17 { PCI_VDEVICE(INTEL, ADF_420XX_PCI_DEVICE_ID), },18 { }19};20MODULE_DEVICE_TABLE(pci, adf_pci_tbl);21 22static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)23{24 if (accel_dev->hw_device) {25 adf_clean_hw_data_420xx(accel_dev->hw_device);26 accel_dev->hw_device = NULL;27 }28 adf_dbgfs_exit(accel_dev);29 adf_cfg_dev_remove(accel_dev);30 adf_devmgr_rm_dev(accel_dev, NULL);31}32 33static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)34{35 struct adf_accel_dev *accel_dev;36 struct adf_accel_pci *accel_pci_dev;37 struct adf_hw_device_data *hw_data;38 unsigned int i, bar_nr;39 unsigned long bar_mask;40 struct adf_bar *bar;41 int ret;42 43 if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) {44 /*45 * If the accelerator is connected to a node with no memory46 * there is no point in using the accelerator since the remote47 * memory transaction will be very slow.48 */49 dev_err(&pdev->dev, "Invalid NUMA configuration.\n");50 return -EINVAL;51 }52 53 accel_dev = devm_kzalloc(&pdev->dev, sizeof(*accel_dev), GFP_KERNEL);54 if (!accel_dev)55 return -ENOMEM;56 57 INIT_LIST_HEAD(&accel_dev->crypto_list);58 accel_pci_dev = &accel_dev->accel_pci_dev;59 accel_pci_dev->pci_dev = pdev;60 61 /*62 * Add accel device to accel table63 * This should be called before adf_cleanup_accel is called64 */65 if (adf_devmgr_add_dev(accel_dev, NULL)) {66 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");67 return -EFAULT;68 }69 70 accel_dev->owner = THIS_MODULE;71 /* Allocate and initialise device hardware meta-data structure */72 hw_data = devm_kzalloc(&pdev->dev, sizeof(*hw_data), GFP_KERNEL);73 if (!hw_data) {74 ret = -ENOMEM;75 goto out_err;76 }77 78 accel_dev->hw_device = hw_data;79 adf_init_hw_data_420xx(accel_dev->hw_device, ent->device);80 81 pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);82 pci_read_config_dword(pdev, ADF_GEN4_FUSECTL4_OFFSET, &hw_data->fuses);83 84 /* Get Accelerators and Accelerators Engines masks */85 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);86 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);87 accel_pci_dev->sku = hw_data->get_sku(hw_data);88 /* If the device has no acceleration engines then ignore it */89 if (!hw_data->accel_mask || !hw_data->ae_mask ||90 (~hw_data->ae_mask & 0x01)) {91 dev_err(&pdev->dev, "No acceleration units found.\n");92 ret = -EFAULT;93 goto out_err;94 }95 96 /* Create device configuration table */97 ret = adf_cfg_dev_add(accel_dev);98 if (ret)99 goto out_err;100 101 /* Enable PCI device */102 ret = pcim_enable_device(pdev);103 if (ret) {104 dev_err(&pdev->dev, "Can't enable PCI device.\n");105 goto out_err;106 }107 108 /* Set DMA identifier */109 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));110 if (ret) {111 dev_err(&pdev->dev, "No usable DMA configuration.\n");112 goto out_err;113 }114 115 ret = adf_gen4_cfg_dev_init(accel_dev);116 if (ret) {117 dev_err(&pdev->dev, "Failed to initialize configuration.\n");118 goto out_err;119 }120 121 /* Get accelerator capabilities mask */122 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev);123 if (!hw_data->accel_capabilities_mask) {124 dev_err(&pdev->dev, "Failed to get capabilities mask.\n");125 ret = -EINVAL;126 goto out_err;127 }128 129 /* Find and map all the device's BARS */130 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM) & ADF_GEN4_BAR_MASK;131 132 ret = pcim_iomap_regions_request_all(pdev, bar_mask, pci_name(pdev));133 if (ret) {134 dev_err(&pdev->dev, "Failed to map pci regions.\n");135 goto out_err;136 }137 138 i = 0;139 for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) {140 bar = &accel_pci_dev->pci_bars[i++];141 bar->virt_addr = pcim_iomap_table(pdev)[bar_nr];142 }143 144 pci_set_master(pdev);145 146 if (pci_save_state(pdev)) {147 dev_err(&pdev->dev, "Failed to save pci state.\n");148 ret = -ENOMEM;149 goto out_err;150 }151 152 accel_dev->ras_errors.enabled = true;153 adf_dbgfs_init(accel_dev);154 155 ret = adf_dev_up(accel_dev, true);156 if (ret)157 goto out_err_dev_stop;158 159 ret = adf_sysfs_init(accel_dev);160 if (ret)161 goto out_err_dev_stop;162 163 return ret;164 165out_err_dev_stop:166 adf_dev_down(accel_dev);167out_err:168 adf_cleanup_accel(accel_dev);169 return ret;170}171 172static void adf_remove(struct pci_dev *pdev)173{174 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);175 176 if (!accel_dev) {177 pr_err("QAT: Driver removal failed\n");178 return;179 }180 adf_dev_down(accel_dev);181 adf_cleanup_accel(accel_dev);182}183 184static struct pci_driver adf_driver = {185 .id_table = adf_pci_tbl,186 .name = ADF_420XX_DEVICE_NAME,187 .probe = adf_probe,188 .remove = adf_remove,189 .sriov_configure = adf_sriov_configure,190 .err_handler = &adf_err_handler,191};192 193module_pci_driver(adf_driver);194 195MODULE_LICENSE("GPL");196MODULE_AUTHOR("Intel");197MODULE_FIRMWARE(ADF_420XX_FW);198MODULE_FIRMWARE(ADF_420XX_MMP);199MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");200MODULE_VERSION(ADF_DRV_VERSION);201MODULE_SOFTDEP("pre: crypto-intel_qat");202MODULE_IMPORT_NS(CRYPTO_QAT);203