1 // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) 2 /* Copyright(c) 2020 Intel Corporation */ 3 #include <linux/device.h> 4 #include <linux/module.h> 5 #include <linux/pci.h> 6 7 #include <adf_accel_devices.h> 8 #include <adf_cfg.h> 9 #include <adf_common_drv.h> 10 #include <adf_dbgfs.h> 11 #include <adf_gen4_config.h> 12 #include <adf_gen4_hw_data.h> 13 14 #include "adf_4xxx_hw_data.h" 15 16 static const struct pci_device_id adf_pci_tbl[] = { 17 { PCI_VDEVICE(INTEL, ADF_4XXX_PCI_DEVICE_ID), }, 18 { PCI_VDEVICE(INTEL, ADF_401XX_PCI_DEVICE_ID), }, 19 { PCI_VDEVICE(INTEL, ADF_402XX_PCI_DEVICE_ID), }, 20 { } 21 }; 22 MODULE_DEVICE_TABLE(pci, adf_pci_tbl); 23 24 static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) 25 { 26 if (accel_dev->hw_device) { 27 adf_clean_hw_data_4xxx(accel_dev->hw_device); 28 accel_dev->hw_device = NULL; 29 } 30 adf_dbgfs_exit(accel_dev); 31 adf_cfg_dev_remove(accel_dev); 32 adf_devmgr_rm_dev(accel_dev, NULL); 33 } 34 35 static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 36 { 37 struct adf_accel_dev *accel_dev; 38 struct adf_accel_pci *accel_pci_dev; 39 struct adf_hw_device_data *hw_data; 40 unsigned int i, bar_nr; 41 unsigned long bar_mask; 42 struct adf_bar *bar; 43 int ret; 44 45 if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) { 46 /* 47 * If the accelerator is connected to a node with no memory 48 * there is no point in using the accelerator since the remote 49 * memory transaction will be very slow. 50 */ 51 dev_err(&pdev->dev, "Invalid NUMA configuration.\n"); 52 return -EINVAL; 53 } 54 55 accel_dev = devm_kzalloc(&pdev->dev, sizeof(*accel_dev), GFP_KERNEL); 56 if (!accel_dev) 57 return -ENOMEM; 58 59 INIT_LIST_HEAD(&accel_dev->crypto_list); 60 accel_pci_dev = &accel_dev->accel_pci_dev; 61 accel_pci_dev->pci_dev = pdev; 62 63 /* 64 * Add accel device to accel table 65 * This should be called before adf_cleanup_accel is called 66 */ 67 if (adf_devmgr_add_dev(accel_dev, NULL)) { 68 dev_err(&pdev->dev, "Failed to add new accelerator device.\n"); 69 return -EFAULT; 70 } 71 72 accel_dev->owner = THIS_MODULE; 73 /* Allocate and initialise device hardware meta-data structure */ 74 hw_data = devm_kzalloc(&pdev->dev, sizeof(*hw_data), GFP_KERNEL); 75 if (!hw_data) { 76 ret = -ENOMEM; 77 goto out_err; 78 } 79 80 accel_dev->hw_device = hw_data; 81 adf_init_hw_data_4xxx(accel_dev->hw_device, ent->device); 82 83 pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid); 84 pci_read_config_dword(pdev, ADF_GEN4_FUSECTL4_OFFSET, &hw_data->fuses); 85 86 /* Get Accelerators and Accelerators Engines masks */ 87 hw_data->accel_mask = hw_data->get_accel_mask(hw_data); 88 hw_data->ae_mask = hw_data->get_ae_mask(hw_data); 89 accel_pci_dev->sku = hw_data->get_sku(hw_data); 90 /* If the device has no acceleration engines then ignore it */ 91 if (!hw_data->accel_mask || !hw_data->ae_mask || 92 (~hw_data->ae_mask & 0x01)) { 93 dev_err(&pdev->dev, "No acceleration units found.\n"); 94 ret = -EFAULT; 95 goto out_err; 96 } 97 98 /* Create device configuration table */ 99 ret = adf_cfg_dev_add(accel_dev); 100 if (ret) 101 goto out_err; 102 103 /* Enable PCI device */ 104 ret = pcim_enable_device(pdev); 105 if (ret) { 106 dev_err(&pdev->dev, "Can't enable PCI device.\n"); 107 goto out_err; 108 } 109 110 /* Set DMA identifier */ 111 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 112 if (ret) { 113 dev_err(&pdev->dev, "No usable DMA configuration.\n"); 114 goto out_err; 115 } 116 117 ret = adf_gen4_cfg_dev_init(accel_dev); 118 if (ret) { 119 dev_err(&pdev->dev, "Failed to initialize configuration.\n"); 120 goto out_err; 121 } 122 123 /* Get accelerator capabilities mask */ 124 hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev); 125 if (!hw_data->accel_capabilities_mask) { 126 dev_err(&pdev->dev, "Failed to get capabilities mask.\n"); 127 ret = -EINVAL; 128 goto out_err; 129 } 130 131 /* Find and map all the device's BARS */ 132 bar_mask = pci_select_bars(pdev, IORESOURCE_MEM) & ADF_GEN4_BAR_MASK; 133 134 ret = pcim_iomap_regions_request_all(pdev, bar_mask, pci_name(pdev)); 135 if (ret) { 136 dev_err(&pdev->dev, "Failed to map pci regions.\n"); 137 goto out_err; 138 } 139 140 i = 0; 141 for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) { 142 bar = &accel_pci_dev->pci_bars[i++]; 143 bar->virt_addr = pcim_iomap_table(pdev)[bar_nr]; 144 } 145 146 pci_set_master(pdev); 147 148 if (pci_save_state(pdev)) { 149 dev_err(&pdev->dev, "Failed to save pci state.\n"); 150 ret = -ENOMEM; 151 goto out_err; 152 } 153 154 accel_dev->ras_errors.enabled = true; 155 adf_dbgfs_init(accel_dev); 156 157 ret = adf_dev_up(accel_dev, true); 158 if (ret) 159 goto out_err_dev_stop; 160 161 ret = adf_sysfs_init(accel_dev); 162 if (ret) 163 goto out_err_dev_stop; 164 165 return ret; 166 167 out_err_dev_stop: 168 adf_dev_down(accel_dev, false); 169 out_err: 170 adf_cleanup_accel(accel_dev); 171 return ret; 172 } 173 174 static void adf_remove(struct pci_dev *pdev) 175 { 176 struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev); 177 178 if (!accel_dev) { 179 pr_err("QAT: Driver removal failed\n"); 180 return; 181 } 182 adf_dev_down(accel_dev, false); 183 adf_cleanup_accel(accel_dev); 184 } 185 186 static struct pci_driver adf_driver = { 187 .id_table = adf_pci_tbl, 188 .name = ADF_4XXX_DEVICE_NAME, 189 .probe = adf_probe, 190 .remove = adf_remove, 191 .sriov_configure = adf_sriov_configure, 192 .err_handler = &adf_err_handler, 193 }; 194 195 module_pci_driver(adf_driver); 196 197 MODULE_LICENSE("Dual BSD/GPL"); 198 MODULE_AUTHOR("Intel"); 199 MODULE_FIRMWARE(ADF_4XXX_FW); 200 MODULE_FIRMWARE(ADF_402XX_FW); 201 MODULE_FIRMWARE(ADF_4XXX_MMP); 202 MODULE_FIRMWARE(ADF_402XX_MMP); 203 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); 204 MODULE_VERSION(ADF_DRV_VERSION); 205 MODULE_SOFTDEP("pre: crypto-intel_qat"); 206 MODULE_IMPORT_NS(CRYPTO_QAT); 207