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_c3xxxvf_hw_data.h" 20 21 static const struct pci_device_id adf_pci_tbl[] = { 22 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF), }, 23 { } 24 }; 25 MODULE_DEVICE_TABLE(pci, adf_pci_tbl); 26 27 static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent); 28 static void adf_remove(struct pci_dev *dev); 29 30 static struct pci_driver adf_driver = { 31 .id_table = adf_pci_tbl, 32 .name = ADF_C3XXXVF_DEVICE_NAME, 33 .probe = adf_probe, 34 .remove = adf_remove, 35 }; 36 37 static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev) 38 { 39 pci_release_regions(accel_dev->accel_pci_dev.pci_dev); 40 pci_disable_device(accel_dev->accel_pci_dev.pci_dev); 41 } 42 43 static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) 44 { 45 struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev; 46 struct adf_accel_dev *pf; 47 int i; 48 49 for (i = 0; i < ADF_PCI_MAX_BARS; i++) { 50 struct adf_bar *bar = &accel_pci_dev->pci_bars[i]; 51 52 if (bar->virt_addr) 53 pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr); 54 } 55 56 if (accel_dev->hw_device) { 57 switch (accel_pci_dev->pci_dev->device) { 58 case PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF: 59 adf_clean_hw_data_c3xxxiov(accel_dev->hw_device); 60 break; 61 default: 62 break; 63 } 64 kfree(accel_dev->hw_device); 65 accel_dev->hw_device = NULL; 66 } 67 adf_cfg_dev_remove(accel_dev); 68 debugfs_remove(accel_dev->debugfs_dir); 69 pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn); 70 adf_devmgr_rm_dev(accel_dev, pf); 71 } 72 73 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 74 { 75 struct adf_accel_dev *accel_dev; 76 struct adf_accel_dev *pf; 77 struct adf_accel_pci *accel_pci_dev; 78 struct adf_hw_device_data *hw_data; 79 char name[ADF_DEVICE_NAME_LENGTH]; 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_C3XXX_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_c3xxxiov(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 dev top level debugfs entry */ 127 snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX, 128 hw_data->dev_class->name, pci_name(pdev)); 129 130 accel_dev->debugfs_dir = debugfs_create_dir(name, NULL); 131 132 /* Create device configuration table */ 133 ret = adf_cfg_dev_add(accel_dev); 134 if (ret) 135 goto out_err; 136 137 /* enable PCI device */ 138 if (pci_enable_device(pdev)) { 139 ret = -EFAULT; 140 goto out_err; 141 } 142 143 /* set dma identifier */ 144 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48)); 145 if (ret) { 146 dev_err(&pdev->dev, "No usable DMA configuration\n"); 147 goto out_err_disable; 148 } 149 150 if (pci_request_regions(pdev, ADF_C3XXXVF_DEVICE_NAME)) { 151 ret = -EFAULT; 152 goto out_err_disable; 153 } 154 155 /* Find and map all the device's BARS */ 156 i = 0; 157 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM); 158 for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) { 159 struct adf_bar *bar = &accel_pci_dev->pci_bars[i++]; 160 161 bar->base_addr = pci_resource_start(pdev, bar_nr); 162 if (!bar->base_addr) 163 break; 164 bar->size = pci_resource_len(pdev, bar_nr); 165 bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0); 166 if (!bar->virt_addr) { 167 dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr); 168 ret = -EFAULT; 169 goto out_err_free_reg; 170 } 171 } 172 pci_set_master(pdev); 173 /* Completion for VF2PF request/response message exchange */ 174 init_completion(&accel_dev->vf.msg_received); 175 176 ret = adf_dev_up(accel_dev, false); 177 if (ret) 178 goto out_err_dev_stop; 179 180 return ret; 181 182 out_err_dev_stop: 183 adf_dev_down(accel_dev, false); 184 out_err_free_reg: 185 pci_release_regions(accel_pci_dev->pci_dev); 186 out_err_disable: 187 pci_disable_device(accel_pci_dev->pci_dev); 188 out_err: 189 adf_cleanup_accel(accel_dev); 190 kfree(accel_dev); 191 return ret; 192 } 193 194 static void adf_remove(struct pci_dev *pdev) 195 { 196 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev); 197 198 if (!accel_dev) { 199 pr_err("QAT: Driver removal failed\n"); 200 return; 201 } 202 adf_flush_vf_wq(accel_dev); 203 adf_dev_down(accel_dev, false); 204 adf_cleanup_accel(accel_dev); 205 adf_cleanup_pci_dev(accel_dev); 206 kfree(accel_dev); 207 } 208 209 static int __init adfdrv_init(void) 210 { 211 request_module("intel_qat"); 212 213 if (pci_register_driver(&adf_driver)) { 214 pr_err("QAT: Driver initialization failed\n"); 215 return -EFAULT; 216 } 217 return 0; 218 } 219 220 static void __exit adfdrv_release(void) 221 { 222 pci_unregister_driver(&adf_driver); 223 adf_clean_vf_map(true); 224 } 225 226 module_init(adfdrv_init); 227 module_exit(adfdrv_release); 228 229 MODULE_LICENSE("Dual BSD/GPL"); 230 MODULE_AUTHOR("Intel"); 231 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); 232 MODULE_VERSION(ADF_DRV_VERSION); 233