drivers/crypto/intel/qat/qat_4xxx/adf_drv.c

   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_request_all_regions(pdev, pci_name(pdev));
 135         if (ret) {
 136                 dev_err(&pdev->dev, "Failed to request 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(pdev, bar_nr, 0);
 144                 if (!bar->virt_addr) {
 145                         dev_err(&pdev->dev, "Failed to ioremap PCI region.\n");
 146                         ret = -ENOMEM;
 147                         goto out_err;
 148                 }
 149         }
 150
 151         pci_set_master(pdev);
 152
 153         if (pci_save_state(pdev)) {
 154                 dev_err(&pdev->dev, "Failed to save pci state.\n");
 155                 ret = -ENOMEM;
 156                 goto out_err;
 157         }
 158
 159         accel_dev->ras_errors.enabled = true;
 160         adf_dbgfs_init(accel_dev);
 161
 162         ret = adf_dev_up(accel_dev, true);
 163         if (ret)
 164                 goto out_err_dev_stop;
 165
 166         ret = adf_sysfs_init(accel_dev);
 167         if (ret)
 168                 goto out_err_dev_stop;
 169
 170         return ret;
 171
 172 out_err_dev_stop:
 173         adf_dev_down(accel_dev);
 174 out_err:
 175         adf_cleanup_accel(accel_dev);
 176         return ret;
 177 }
 178
 179 static void adf_remove(struct pci_dev *pdev)
 180 {
 181         struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
 182
 183         if (!accel_dev) {
 184                 pr_err("QAT: Driver removal failed\n");
 185                 return;
 186         }
 187         adf_dev_down(accel_dev);
 188         adf_cleanup_accel(accel_dev);
 189 }
 190
 191 static struct pci_driver adf_driver = {
 192         .id_table = adf_pci_tbl,
 193         .name = ADF_4XXX_DEVICE_NAME,
 194         .probe = adf_probe,
 195         .remove = adf_remove,
 196         .sriov_configure = adf_sriov_configure,
 197         .err_handler = &adf_err_handler,
 198 };
 199
 200 module_pci_driver(adf_driver);
 201
 202 MODULE_LICENSE("Dual BSD/GPL");
 203 MODULE_AUTHOR("Intel");
 204 MODULE_FIRMWARE(ADF_4XXX_FW);
 205 MODULE_FIRMWARE(ADF_402XX_FW);
 206 MODULE_FIRMWARE(ADF_4XXX_MMP);
 207 MODULE_FIRMWARE(ADF_402XX_MMP);
 208 MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
 209 MODULE_VERSION(ADF_DRV_VERSION);
 210 MODULE_SOFTDEP("pre: crypto-intel_qat");
 211 MODULE_IMPORT_NS("CRYPTO_QAT");