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1// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)2/* Copyright(c) 2014 - 2020 Intel Corporation */3#include <linux/kernel.h>4#include <linux/module.h>5#include <linux/pci.h>6#include <linux/init.h>7#include <linux/types.h>8#include <linux/fs.h>9#include <linux/slab.h>10#include <linux/errno.h>11#include <linux/device.h>12#include <linux/dma-mapping.h>13#include <linux/platform_device.h>14#include <linux/workqueue.h>15#include <linux/io.h>16#include <adf_accel_devices.h>17#include <adf_common_drv.h>18#include <adf_cfg.h>19#include <adf_dbgfs.h>20#include "adf_c62x_hw_data.h"21 22static const struct pci_device_id adf_pci_tbl[] = {23 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C62X), },24 { }25};26MODULE_DEVICE_TABLE(pci, adf_pci_tbl);27 28static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);29static void adf_remove(struct pci_dev *dev);30 31static struct pci_driver adf_driver = {32 .id_table = adf_pci_tbl,33 .name = ADF_C62X_DEVICE_NAME,34 .probe = adf_probe,35 .remove = adf_remove,36 .sriov_configure = adf_sriov_configure,37 .err_handler = &adf_err_handler,38};39 40static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)41{42 pci_release_regions(accel_dev->accel_pci_dev.pci_dev);43 pci_disable_device(accel_dev->accel_pci_dev.pci_dev);44}45 46static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)47{48 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;49 int i;50 51 for (i = 0; i < ADF_PCI_MAX_BARS; i++) {52 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];53 54 if (bar->virt_addr)55 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);56 }57 58 if (accel_dev->hw_device) {59 switch (accel_pci_dev->pci_dev->device) {60 case PCI_DEVICE_ID_INTEL_QAT_C62X:61 adf_clean_hw_data_c62x(accel_dev->hw_device);62 break;63 default:64 break;65 }66 kfree(accel_dev->hw_device);67 accel_dev->hw_device = NULL;68 }69 adf_dbgfs_exit(accel_dev);70 adf_cfg_dev_remove(accel_dev);71 adf_devmgr_rm_dev(accel_dev, NULL);72}73 74static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)75{76 struct adf_accel_dev *accel_dev;77 struct adf_accel_pci *accel_pci_dev;78 struct adf_hw_device_data *hw_data;79 unsigned int i, bar_nr;80 unsigned long bar_mask;81 int ret;82 83 switch (ent->device) {84 case PCI_DEVICE_ID_INTEL_QAT_C62X:85 break;86 default:87 dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);88 return -ENODEV;89 }90 91 if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) {92 /* If the accelerator is connected to a node with no memory93 * there is no point in using the accelerator since the remote94 * memory transaction will be very slow. */95 dev_err(&pdev->dev, "Invalid NUMA configuration.\n");96 return -EINVAL;97 }98 99 accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,100 dev_to_node(&pdev->dev));101 if (!accel_dev)102 return -ENOMEM;103 104 INIT_LIST_HEAD(&accel_dev->crypto_list);105 accel_pci_dev = &accel_dev->accel_pci_dev;106 accel_pci_dev->pci_dev = pdev;107 108 /* Add accel device to accel table.109 * This should be called before adf_cleanup_accel is called */110 if (adf_devmgr_add_dev(accel_dev, NULL)) {111 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");112 kfree(accel_dev);113 return -EFAULT;114 }115 116 accel_dev->owner = THIS_MODULE;117 /* Allocate and configure device configuration structure */118 hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,119 dev_to_node(&pdev->dev));120 if (!hw_data) {121 ret = -ENOMEM;122 goto out_err;123 }124 125 accel_dev->hw_device = hw_data;126 adf_init_hw_data_c62x(accel_dev->hw_device);127 pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid);128 pci_read_config_dword(pdev, ADF_DEVICE_FUSECTL_OFFSET,129 &hw_data->fuses);130 pci_read_config_dword(pdev, ADF_C62X_SOFTSTRAP_CSR_OFFSET,131 &hw_data->straps);132 133 /* Get Accelerators and Accelerators Engines masks */134 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);135 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);136 accel_pci_dev->sku = hw_data->get_sku(hw_data);137 /* If the device has no acceleration engines then ignore it. */138 if (!hw_data->accel_mask || !hw_data->ae_mask ||139 ((~hw_data->ae_mask) & 0x01)) {140 dev_err(&pdev->dev, "No acceleration units found");141 ret = -EFAULT;142 goto out_err;143 }144 145 /* Create device configuration table */146 ret = adf_cfg_dev_add(accel_dev);147 if (ret)148 goto out_err;149 150 /* enable PCI device */151 if (pci_enable_device(pdev)) {152 ret = -EFAULT;153 goto out_err;154 }155 156 /* set dma identifier */157 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));158 if (ret) {159 dev_err(&pdev->dev, "No usable DMA configuration\n");160 goto out_err_disable;161 }162 163 if (pci_request_regions(pdev, ADF_C62X_DEVICE_NAME)) {164 ret = -EFAULT;165 goto out_err_disable;166 }167 168 /* Get accelerator capabilities mask */169 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev);170 171 /* Find and map all the device's BARS */172 i = (hw_data->fuses & ADF_DEVICE_FUSECTL_MASK) ? 1 : 0;173 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);174 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {175 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];176 177 bar->base_addr = pci_resource_start(pdev, bar_nr);178 if (!bar->base_addr)179 break;180 bar->size = pci_resource_len(pdev, bar_nr);181 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);182 if (!bar->virt_addr) {183 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);184 ret = -EFAULT;185 goto out_err_free_reg;186 }187 }188 pci_set_master(pdev);189 190 if (pci_save_state(pdev)) {191 dev_err(&pdev->dev, "Failed to save pci state\n");192 ret = -ENOMEM;193 goto out_err_free_reg;194 }195 196 adf_dbgfs_init(accel_dev);197 198 ret = adf_dev_up(accel_dev, true);199 if (ret)200 goto out_err_dev_stop;201 202 return ret;203 204out_err_dev_stop:205 adf_dev_down(accel_dev);206out_err_free_reg:207 pci_release_regions(accel_pci_dev->pci_dev);208out_err_disable:209 pci_disable_device(accel_pci_dev->pci_dev);210out_err:211 adf_cleanup_accel(accel_dev);212 kfree(accel_dev);213 return ret;214}215 216static void adf_remove(struct pci_dev *pdev)217{218 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);219 220 if (!accel_dev) {221 pr_err("QAT: Driver removal failed\n");222 return;223 }224 adf_dev_down(accel_dev);225 adf_cleanup_accel(accel_dev);226 adf_cleanup_pci_dev(accel_dev);227 kfree(accel_dev);228}229 230static int __init adfdrv_init(void)231{232 request_module("intel_qat");233 234 if (pci_register_driver(&adf_driver)) {235 pr_err("QAT: Driver initialization failed\n");236 return -EFAULT;237 }238 return 0;239}240 241static void __exit adfdrv_release(void)242{243 pci_unregister_driver(&adf_driver);244}245 246module_init(adfdrv_init);247module_exit(adfdrv_release);248 249MODULE_LICENSE("Dual BSD/GPL");250MODULE_AUTHOR("Intel");251MODULE_FIRMWARE(ADF_C62X_FW);252MODULE_FIRMWARE(ADF_C62X_MMP);253MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");254MODULE_VERSION(ADF_DRV_VERSION);255MODULE_IMPORT_NS(CRYPTO_QAT);256