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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_c62xvf_hw_data.h"21 22static const struct pci_device_id adf_pci_tbl[] = {23 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C62X_VF), },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_C62XVF_DEVICE_NAME,34 .probe = adf_probe,35 .remove = adf_remove,36};37 38static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)39{40 pci_release_regions(accel_dev->accel_pci_dev.pci_dev);41 pci_disable_device(accel_dev->accel_pci_dev.pci_dev);42}43 44static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)45{46 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;47 struct adf_accel_dev *pf;48 int i;49 50 for (i = 0; i < ADF_PCI_MAX_BARS; i++) {51 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];52 53 if (bar->virt_addr)54 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);55 }56 57 if (accel_dev->hw_device) {58 switch (accel_pci_dev->pci_dev->device) {59 case PCI_DEVICE_ID_INTEL_QAT_C62X_VF:60 adf_clean_hw_data_c62xiov(accel_dev->hw_device);61 break;62 default:63 break;64 }65 kfree(accel_dev->hw_device);66 accel_dev->hw_device = NULL;67 }68 adf_dbgfs_exit(accel_dev);69 adf_cfg_dev_remove(accel_dev);70 pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);71 adf_devmgr_rm_dev(accel_dev, pf);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_dev *pf;78 struct adf_accel_pci *accel_pci_dev;79 struct adf_hw_device_data *hw_data;80 unsigned int i, bar_nr;81 unsigned long bar_mask;82 int ret;83 84 switch (ent->device) {85 case PCI_DEVICE_ID_INTEL_QAT_C62X_VF:86 break;87 default:88 dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);89 return -ENODEV;90 }91 92 accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,93 dev_to_node(&pdev->dev));94 if (!accel_dev)95 return -ENOMEM;96 97 accel_dev->is_vf = true;98 pf = adf_devmgr_pci_to_accel_dev(pdev->physfn);99 accel_pci_dev = &accel_dev->accel_pci_dev;100 accel_pci_dev->pci_dev = pdev;101 102 /* Add accel device to accel table */103 if (adf_devmgr_add_dev(accel_dev, pf)) {104 dev_err(&pdev->dev, "Failed to add new accelerator device.\n");105 kfree(accel_dev);106 return -EFAULT;107 }108 INIT_LIST_HEAD(&accel_dev->crypto_list);109 110 accel_dev->owner = THIS_MODULE;111 /* Allocate and configure device configuration structure */112 hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,113 dev_to_node(&pdev->dev));114 if (!hw_data) {115 ret = -ENOMEM;116 goto out_err;117 }118 accel_dev->hw_device = hw_data;119 adf_init_hw_data_c62xiov(accel_dev->hw_device);120 121 /* Get Accelerators and Accelerators Engines masks */122 hw_data->accel_mask = hw_data->get_accel_mask(hw_data);123 hw_data->ae_mask = hw_data->get_ae_mask(hw_data);124 accel_pci_dev->sku = hw_data->get_sku(hw_data);125 126 /* Create device configuration table */127 ret = adf_cfg_dev_add(accel_dev);128 if (ret)129 goto out_err;130 131 /* enable PCI device */132 if (pci_enable_device(pdev)) {133 ret = -EFAULT;134 goto out_err;135 }136 137 /* set dma identifier */138 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48));139 if (ret) {140 dev_err(&pdev->dev, "No usable DMA configuration\n");141 goto out_err_disable;142 }143 144 if (pci_request_regions(pdev, ADF_C62XVF_DEVICE_NAME)) {145 ret = -EFAULT;146 goto out_err_disable;147 }148 149 /* Find and map all the device's BARS */150 i = 0;151 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);152 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {153 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];154 155 bar->base_addr = pci_resource_start(pdev, bar_nr);156 if (!bar->base_addr)157 break;158 bar->size = pci_resource_len(pdev, bar_nr);159 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);160 if (!bar->virt_addr) {161 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);162 ret = -EFAULT;163 goto out_err_free_reg;164 }165 }166 pci_set_master(pdev);167 /* Completion for VF2PF request/response message exchange */168 init_completion(&accel_dev->vf.msg_received);169 170 adf_dbgfs_init(accel_dev);171 172 ret = adf_dev_up(accel_dev, false);173 if (ret)174 goto out_err_dev_stop;175 176 return ret;177 178out_err_dev_stop:179 adf_dev_down(accel_dev);180out_err_free_reg:181 pci_release_regions(accel_pci_dev->pci_dev);182out_err_disable:183 pci_disable_device(accel_pci_dev->pci_dev);184out_err:185 adf_cleanup_accel(accel_dev);186 kfree(accel_dev);187 return ret;188}189 190static void adf_remove(struct pci_dev *pdev)191{192 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);193 194 if (!accel_dev) {195 pr_err("QAT: Driver removal failed\n");196 return;197 }198 adf_flush_vf_wq(accel_dev);199 adf_dev_down(accel_dev);200 adf_cleanup_accel(accel_dev);201 adf_cleanup_pci_dev(accel_dev);202 kfree(accel_dev);203}204 205static int __init adfdrv_init(void)206{207 request_module("intel_qat");208 209 if (pci_register_driver(&adf_driver)) {210 pr_err("QAT: Driver initialization failed\n");211 return -EFAULT;212 }213 return 0;214}215 216static void __exit adfdrv_release(void)217{218 pci_unregister_driver(&adf_driver);219 adf_clean_vf_map(true);220}221 222module_init(adfdrv_init);223module_exit(adfdrv_release);224 225MODULE_LICENSE("Dual BSD/GPL");226MODULE_AUTHOR("Intel");227MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");228MODULE_VERSION(ADF_DRV_VERSION);229MODULE_IMPORT_NS(CRYPTO_QAT);230