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 22 static const struct pci_device_id adf_pci_tbl[] = { 23 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C62X_VF), }, 24 { } 25 }; 26 MODULE_DEVICE_TABLE(pci, adf_pci_tbl); 27 28 static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent); 29 static void adf_remove(struct pci_dev *dev); 30 31 static 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 38 static 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 44 static 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 74 static 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; 177 178 out_err_dev_stop: 179 adf_dev_down(accel_dev, false); 180 out_err_free_reg: 181 pci_release_regions(accel_pci_dev->pci_dev); 182 out_err_disable: 183 pci_disable_device(accel_pci_dev->pci_dev); 184 out_err: 185 adf_cleanup_accel(accel_dev); 186 kfree(accel_dev); 187 return ret; 188 } 189 190 static 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, false); 200 adf_cleanup_accel(accel_dev); 201 adf_cleanup_pci_dev(accel_dev); 202 kfree(accel_dev); 203 } 204 205 static 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 } 215 216 static void __exit adfdrv_release(void) 217 { 218 pci_unregister_driver(&adf_driver); 219 adf_clean_vf_map(true); 220 } 221 222 module_init(adfdrv_init); 223 module_exit(adfdrv_release); 224 225 MODULE_LICENSE("Dual BSD/GPL"); 226 MODULE_AUTHOR("Intel"); 227 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); 228 MODULE_VERSION(ADF_DRV_VERSION); 229 MODULE_IMPORT_NS(CRYPTO_QAT); 230