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_dh895xcc_hw_data.h" 21 22 static const struct pci_device_id adf_pci_tbl[] = { 23 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_DH895XCC), }, 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_DH895XCC_DEVICE_NAME, 34 .probe = adf_probe, 35 .remove = adf_remove, 36 .sriov_configure = adf_sriov_configure, 37 .err_handler = &adf_err_handler, 38 }; 39 40 static 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 46 static 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_DH895XCC: 61 adf_clean_hw_data_dh895xcc(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 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_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_DH895XCC: 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 memory 93 * there is no point in using the accelerator since the remote 94 * 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_dh895xcc(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); 130 131 /* Get Accelerators and Accelerators Engines masks */ 132 hw_data->accel_mask = hw_data->get_accel_mask(hw_data); 133 hw_data->ae_mask = hw_data->get_ae_mask(hw_data); 134 accel_pci_dev->sku = hw_data->get_sku(hw_data); 135 /* If the device has no acceleration engines then ignore it. */ 136 if (!hw_data->accel_mask || !hw_data->ae_mask || 137 ((~hw_data->ae_mask) & 0x01)) { 138 dev_err(&pdev->dev, "No acceleration units found"); 139 ret = -EFAULT; 140 goto out_err; 141 } 142 143 /* Create device configuration table */ 144 ret = adf_cfg_dev_add(accel_dev); 145 if (ret) 146 goto out_err; 147 148 pcie_set_readrq(pdev, 1024); 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_DH895XCC_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 = 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; 203 204 out_err_dev_stop: 205 adf_dev_down(accel_dev); 206 out_err_free_reg: 207 pci_release_regions(accel_pci_dev->pci_dev); 208 out_err_disable: 209 pci_disable_device(accel_pci_dev->pci_dev); 210 out_err: 211 adf_cleanup_accel(accel_dev); 212 kfree(accel_dev); 213 return ret; 214 } 215 216 static 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 } 229 230 static 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 } 240 241 static void __exit adfdrv_release(void) 242 { 243 pci_unregister_driver(&adf_driver); 244 } 245 246 module_init(adfdrv_init); 247 module_exit(adfdrv_release); 248 249 MODULE_LICENSE("Dual BSD/GPL"); 250 MODULE_AUTHOR("Intel"); 251 MODULE_FIRMWARE(ADF_DH895XCC_FW); 252 MODULE_FIRMWARE(ADF_DH895XCC_MMP); 253 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); 254 MODULE_VERSION(ADF_DRV_VERSION); 255 MODULE_IMPORT_NS(CRYPTO_QAT); 256