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1// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)2/* Copyright(c) 2020 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_cfg.h>9#include <adf_common_drv.h>10#include <adf_dbgfs.h>11#include <adf_gen4_config.h>12#include <adf_gen4_hw_data.h>13 14#include "adf_4xxx_hw_data.h"15 16static const struct pci_device_id adf_pci_tbl[] = {17 { PCI_VDEVICE(INTEL, ADF_4XXX_PCI_DEVICE_ID), },18 { PCI_VDEVICE(INTEL, ADF_401XX_PCI_DEVICE_ID), },19 { PCI_VDEVICE(INTEL, ADF_402XX_PCI_DEVICE_ID), },20 { }21};22MODULE_DEVICE_TABLE(pci, adf_pci_tbl);23 24static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)25{26 if (accel_dev->hw_device) {27 adf_clean_hw_data_4xxx(accel_dev->hw_device);28 accel_dev->hw_device = NULL;29 }30 adf_dbgfs_exit(accel_dev);31 adf_cfg_dev_remove(accel_dev);32 adf_devmgr_rm_dev(accel_dev, NULL);33}34 35static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)36{37 struct adf_accel_dev *accel_dev;38 struct adf_accel_pci *accel_pci_dev;39 struct adf_hw_device_data *hw_data;40 unsigned int i, bar_nr;41 unsigned long bar_mask;42 struct adf_bar *bar;43 int ret;44 45 if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) {46 /*47 * If the accelerator is connected to a node with no memory48 * there is no point in using the accelerator since the remote49 * memory transaction will be very slow.50 */51 dev_err(&pdev->dev, "Invalid NUMA configuration.\n");52 return -EINVAL;53 }54 55 accel_dev = devm_kzalloc(&pdev->dev, sizeof(*accel_dev), GFP_KERNEL);56 if (!accel_dev)57 return -ENOMEM;58 59 INIT_LIST_HEAD(&accel_dev->crypto_list);60 accel_pci_dev = &accel_dev->accel_pci_dev;61 accel_pci_dev->pci_dev = pdev;62 63 /*64 * Add accel device to accel table65 * This should be called before adf_cleanup_accel is called66 */67 if (adf_devmgr_add_dev(accel_dev, NULL)) {68 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");69 return -EFAULT;70 }71 72 accel_dev->owner = THIS_MODULE;73 /* Allocate and initialise device hardware meta-data structure */74 hw_data = devm_kzalloc(&pdev->dev, sizeof(*hw_data), GFP_KERNEL);75 if (!hw_data) {76 ret = -ENOMEM;77 goto out_err;78 }79 80 accel_dev->hw_device = hw_data;81 adf_init_hw_data_4xxx(accel_dev->hw_device, ent->device);82 83 pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);84 pci_read_config_dword(pdev, ADF_GEN4_FUSECTL4_OFFSET, &hw_data->fuses);85 86 /* Get Accelerators and Accelerators Engines masks */87 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);88 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);89 accel_pci_dev->sku = hw_data->get_sku(hw_data);90 /* If the device has no acceleration engines then ignore it */91 if (!hw_data->accel_mask || !hw_data->ae_mask ||92 (~hw_data->ae_mask & 0x01)) {93 dev_err(&pdev->dev, "No acceleration units found.\n");94 ret = -EFAULT;95 goto out_err;96 }97 98 /* Create device configuration table */99 ret = adf_cfg_dev_add(accel_dev);100 if (ret)101 goto out_err;102 103 /* Enable PCI device */104 ret = pcim_enable_device(pdev);105 if (ret) {106 dev_err(&pdev->dev, "Can't enable PCI device.\n");107 goto out_err;108 }109 110 /* Set DMA identifier */111 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));112 if (ret) {113 dev_err(&pdev->dev, "No usable DMA configuration.\n");114 goto out_err;115 }116 117 ret = adf_gen4_cfg_dev_init(accel_dev);118 if (ret) {119 dev_err(&pdev->dev, "Failed to initialize configuration.\n");120 goto out_err;121 }122 123 /* Get accelerator capabilities mask */124 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev);125 if (!hw_data->accel_capabilities_mask) {126 dev_err(&pdev->dev, "Failed to get capabilities mask.\n");127 ret = -EINVAL;128 goto out_err;129 }130 131 /* Find and map all the device's BARS */132 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM) & ADF_GEN4_BAR_MASK;133 134 ret = pcim_iomap_regions_request_all(pdev, bar_mask, pci_name(pdev));135 if (ret) {136 dev_err(&pdev->dev, "Failed to map pci regions.\n");137 goto out_err;138 }139 140 i = 0;141 for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) {142 bar = &accel_pci_dev->pci_bars[i++];143 bar->virt_addr = pcim_iomap_table(pdev)[bar_nr];144 }145 146 pci_set_master(pdev);147 148 if (pci_save_state(pdev)) {149 dev_err(&pdev->dev, "Failed to save pci state.\n");150 ret = -ENOMEM;151 goto out_err;152 }153 154 accel_dev->ras_errors.enabled = true;155 adf_dbgfs_init(accel_dev);156 157 ret = adf_dev_up(accel_dev, true);158 if (ret)159 goto out_err_dev_stop;160 161 ret = adf_sysfs_init(accel_dev);162 if (ret)163 goto out_err_dev_stop;164 165 return ret;166 167out_err_dev_stop:168 adf_dev_down(accel_dev);169out_err:170 adf_cleanup_accel(accel_dev);171 return ret;172}173 174static void adf_remove(struct pci_dev *pdev)175{176 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);177 178 if (!accel_dev) {179 pr_err("QAT: Driver removal failed\n");180 return;181 }182 adf_dev_down(accel_dev);183 adf_cleanup_accel(accel_dev);184}185 186static struct pci_driver adf_driver = {187 .id_table = adf_pci_tbl,188 .name = ADF_4XXX_DEVICE_NAME,189 .probe = adf_probe,190 .remove = adf_remove,191 .sriov_configure = adf_sriov_configure,192 .err_handler = &adf_err_handler,193};194 195module_pci_driver(adf_driver);196 197MODULE_LICENSE("Dual BSD/GPL");198MODULE_AUTHOR("Intel");199MODULE_FIRMWARE(ADF_4XXX_FW);200MODULE_FIRMWARE(ADF_402XX_FW);201MODULE_FIRMWARE(ADF_4XXX_MMP);202MODULE_FIRMWARE(ADF_402XX_MMP);203MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");204MODULE_VERSION(ADF_DRV_VERSION);205MODULE_SOFTDEP("pre: crypto-intel_qat");206MODULE_IMPORT_NS(CRYPTO_QAT);207