1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright(c) 2025 Intel Corporation */ 3 #include <linux/array_size.h> 4 #include <linux/device.h> 5 #include <linux/dma-mapping.h> 6 #include <linux/errno.h> 7 #include <linux/list.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 #include <linux/types.h> 11 12 #include <adf_accel_devices.h> 13 #include <adf_cfg.h> 14 #include <adf_common_drv.h> 15 #include <adf_dbgfs.h> 16 17 #include "adf_gen6_shared.h" 18 #include "adf_6xxx_hw_data.h" 19 20 static int bar_map[] = { 21 0, /* SRAM */ 22 2, /* PMISC */ 23 4, /* ETR */ 24 }; 25 26 static void adf_device_down(void *accel_dev) 27 { 28 adf_dev_down(accel_dev); 29 } 30 31 static void adf_dbgfs_cleanup(void *accel_dev) 32 { 33 adf_dbgfs_exit(accel_dev); 34 } 35 36 static void adf_cfg_device_remove(void *accel_dev) 37 { 38 adf_cfg_dev_remove(accel_dev); 39 } 40 41 static void adf_cleanup_hw_data(void *accel_dev) 42 { 43 struct adf_accel_dev *accel_device = accel_dev; 44 45 if (accel_device->hw_device) { 46 adf_clean_hw_data_6xxx(accel_device->hw_device); 47 accel_device->hw_device = NULL; 48 } 49 } 50 51 static void adf_devmgr_remove(void *accel_dev) 52 { 53 adf_devmgr_rm_dev(accel_dev, NULL); 54 } 55 56 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 57 { 58 struct adf_accel_pci *accel_pci_dev; 59 struct adf_hw_device_data *hw_data; 60 struct device *dev = &pdev->dev; 61 struct adf_accel_dev *accel_dev; 62 struct adf_bar *bar; 63 unsigned int i; 64 int ret; 65 66 if (num_possible_nodes() > 1 && dev_to_node(dev) < 0) { 67 /* 68 * If the accelerator is connected to a node with no memory 69 * there is no point in using the accelerator since the remote 70 * memory transaction will be very slow. 71 */ 72 return dev_err_probe(dev, -EINVAL, "Invalid NUMA configuration.\n"); 73 } 74 75 accel_dev = devm_kzalloc(dev, sizeof(*accel_dev), GFP_KERNEL); 76 if (!accel_dev) 77 return -ENOMEM; 78 79 INIT_LIST_HEAD(&accel_dev->crypto_list); 80 INIT_LIST_HEAD(&accel_dev->list); 81 accel_pci_dev = &accel_dev->accel_pci_dev; 82 accel_pci_dev->pci_dev = pdev; 83 accel_dev->owner = THIS_MODULE; 84 85 hw_data = devm_kzalloc(dev, sizeof(*hw_data), GFP_KERNEL); 86 if (!hw_data) 87 return -ENOMEM; 88 89 pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid); 90 pci_read_config_dword(pdev, ADF_GEN6_FUSECTL4_OFFSET, &hw_data->fuses[ADF_FUSECTL4]); 91 pci_read_config_dword(pdev, ADF_GEN6_FUSECTL0_OFFSET, &hw_data->fuses[ADF_FUSECTL0]); 92 pci_read_config_dword(pdev, ADF_GEN6_FUSECTL1_OFFSET, &hw_data->fuses[ADF_FUSECTL1]); 93 94 if (!(hw_data->fuses[ADF_FUSECTL1] & ICP_ACCEL_GEN6_MASK_WCP_WAT_SLICE)) 95 return dev_err_probe(dev, -EFAULT, "Wireless mode is not supported.\n"); 96 97 /* Enable PCI device */ 98 ret = pcim_enable_device(pdev); 99 if (ret) 100 return dev_err_probe(dev, ret, "Cannot enable PCI device.\n"); 101 102 ret = adf_devmgr_add_dev(accel_dev, NULL); 103 if (ret) 104 return dev_err_probe(dev, ret, "Failed to add new accelerator device.\n"); 105 106 ret = devm_add_action_or_reset(dev, adf_devmgr_remove, accel_dev); 107 if (ret) 108 return ret; 109 110 accel_dev->hw_device = hw_data; 111 adf_init_hw_data_6xxx(accel_dev->hw_device); 112 113 ret = devm_add_action_or_reset(dev, adf_cleanup_hw_data, accel_dev); 114 if (ret) 115 return ret; 116 117 /* Get Accelerators and Accelerator Engine masks */ 118 hw_data->accel_mask = hw_data->get_accel_mask(hw_data); 119 hw_data->ae_mask = hw_data->get_ae_mask(hw_data); 120 accel_pci_dev->sku = hw_data->get_sku(hw_data); 121 122 /* If the device has no acceleration engines then ignore it */ 123 if (!hw_data->accel_mask || !hw_data->ae_mask || 124 (~hw_data->ae_mask & ADF_GEN6_ACCELERATORS_MASK)) { 125 ret = -EFAULT; 126 return dev_err_probe(dev, ret, "No acceleration units were found.\n"); 127 } 128 129 /* Create device configuration table */ 130 ret = adf_cfg_dev_add(accel_dev); 131 if (ret) 132 return ret; 133 134 ret = devm_add_action_or_reset(dev, adf_cfg_device_remove, accel_dev); 135 if (ret) 136 return ret; 137 138 /* Set DMA identifier */ 139 ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); 140 if (ret) 141 return dev_err_probe(dev, ret, "No usable DMA configuration.\n"); 142 143 ret = adf_gen6_cfg_dev_init(accel_dev); 144 if (ret) 145 return dev_err_probe(dev, ret, "Failed to initialize configuration.\n"); 146 147 /* Get accelerator capability mask */ 148 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev); 149 if (!hw_data->accel_capabilities_mask) { 150 ret = -EINVAL; 151 return dev_err_probe(dev, ret, "Failed to get capabilities mask.\n"); 152 } 153 154 for (i = 0; i < ARRAY_SIZE(bar_map); i++) { 155 bar = &accel_pci_dev->pci_bars[i]; 156 157 /* Map 64-bit PCIe BAR */ 158 bar->virt_addr = pcim_iomap_region(pdev, bar_map[i], pci_name(pdev)); 159 if (IS_ERR(bar->virt_addr)) { 160 ret = PTR_ERR(bar->virt_addr); 161 return dev_err_probe(dev, ret, "Failed to ioremap PCI region.\n"); 162 } 163 } 164 165 pci_set_master(pdev); 166 167 /* 168 * The PCI config space is saved at this point and will be restored 169 * after a Function Level Reset (FLR) as the FLR does not completely 170 * restore it. 171 */ 172 ret = pci_save_state(pdev); 173 if (ret) 174 return dev_err_probe(dev, ret, "Failed to save pci state.\n"); 175 176 accel_dev->ras_errors.enabled = true; 177 178 adf_dbgfs_init(accel_dev); 179 180 ret = devm_add_action_or_reset(dev, adf_dbgfs_cleanup, accel_dev); 181 if (ret) 182 return ret; 183 184 ret = adf_dev_up(accel_dev, true); 185 if (ret) 186 return ret; 187 188 ret = devm_add_action_or_reset(dev, adf_device_down, accel_dev); 189 if (ret) 190 return ret; 191 192 ret = adf_sysfs_init(accel_dev); 193 194 return ret; 195 } 196 197 static void adf_shutdown(struct pci_dev *pdev) 198 { 199 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev); 200 201 adf_dev_down(accel_dev); 202 } 203 204 static const struct pci_device_id adf_pci_tbl[] = { 205 { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_6XXX) }, 206 { } 207 }; 208 MODULE_DEVICE_TABLE(pci, adf_pci_tbl); 209 210 static struct pci_driver adf_driver = { 211 .id_table = adf_pci_tbl, 212 .name = ADF_6XXX_DEVICE_NAME, 213 .probe = adf_probe, 214 .shutdown = adf_shutdown, 215 .sriov_configure = adf_sriov_configure, 216 .err_handler = &adf_err_handler, 217 }; 218 module_pci_driver(adf_driver); 219 220 MODULE_LICENSE("GPL"); 221 MODULE_AUTHOR("Intel"); 222 MODULE_FIRMWARE(ADF_6XXX_FW); 223 MODULE_FIRMWARE(ADF_6XXX_MMP); 224 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology for GEN6 Devices"); 225 MODULE_SOFTDEP("pre: crypto-intel_qat"); 226 MODULE_IMPORT_NS("CRYPTO_QAT"); 227