adf_drv.c

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    1 /* SPDX-License-Identifier: BSD-3-Clause */
    2 /* Copyright(c) 2007 - 2022 Intel Corporation */
    3 /* $FreeBSD$ */
    4 #include "qat_freebsd.h"
    5 #include "adf_cfg.h"
    6 #include "adf_common_drv.h"
    7 #include "adf_accel_devices.h"
    8 #include "adf_4xxx_hw_data.h"
    9 #include "adf_gen4_hw_data.h"
   10 #include "adf_fw_counters.h"
   11 #include "adf_cfg_device.h"
   12 #include <sys/types.h>
   13 #include <sys/kernel.h>
   14 #include <sys/malloc.h>
   15 #include <machine/bus_dma.h>
   16 #include <dev/pci/pcireg.h>
   17 #include "adf_heartbeat_dbg.h"
   18 #include "adf_cnvnr_freq_counters.h"
   19 
   20 static MALLOC_DEFINE(M_QAT_4XXX, "qat_4xxx", "qat_4xxx");
   21 
   22 #define ADF_SYSTEM_DEVICE(device_id)                                           \
   23         {                                                                      \
   24                 PCI_VENDOR_ID_INTEL, device_id                                 \
   25         }
   26 
   27 static const struct pci_device_id adf_pci_tbl[] =
   28     { ADF_SYSTEM_DEVICE(ADF_4XXX_PCI_DEVICE_ID),
   29       ADF_SYSTEM_DEVICE(ADF_401XX_PCI_DEVICE_ID),
   30       {
   31           0,
   32       } };
   33 
   34 static int
   35 adf_probe(device_t dev)
   36 {
   37         const struct pci_device_id *id;
   38 
   39         for (id = adf_pci_tbl; id->vendor != 0; id++) {
   40                 if (pci_get_vendor(dev) == id->vendor &&
   41                     pci_get_device(dev) == id->device) {
   42                         device_set_desc(dev,
   43                                         "Intel " ADF_4XXX_DEVICE_NAME
   44                                         " QuickAssist");
   45                         return BUS_PROBE_GENERIC;
   46                 }
   47         }
   48         return ENXIO;
   49 }
   50 
   51 static void
   52 adf_cleanup_accel(struct adf_accel_dev *accel_dev)
   53 {
   54         struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
   55         int i;
   56 
   57         if (accel_dev->dma_tag)
   58                 bus_dma_tag_destroy(accel_dev->dma_tag);
   59         for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
   60                 struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
   61 
   62                 if (bar->virt_addr)
   63                         bus_free_resource(accel_pci_dev->pci_dev,
   64                                           SYS_RES_MEMORY,
   65                                           bar->virt_addr);
   66         }
   67 
   68         if (accel_dev->hw_device) {
   69                 switch (pci_get_device(accel_pci_dev->pci_dev)) {
   70                 case ADF_4XXX_PCI_DEVICE_ID:
   71                 case ADF_401XX_PCI_DEVICE_ID:
   72                         adf_clean_hw_data_4xxx(accel_dev->hw_device);
   73                         break;
   74                 default:
   75                         break;
   76                 }
   77                 free(accel_dev->hw_device, M_QAT_4XXX);
   78                 accel_dev->hw_device = NULL;
   79         }
   80         adf_cfg_dev_remove(accel_dev);
   81         adf_devmgr_rm_dev(accel_dev, NULL);
   82 }
   83 
   84 static int
   85 adf_attach(device_t dev)
   86 {
   87         struct adf_accel_dev *accel_dev;
   88         struct adf_accel_pci *accel_pci_dev;
   89         struct adf_hw_device_data *hw_data;
   90         unsigned int i, bar_nr;
   91         int ret, rid;
   92         struct adf_cfg_device *cfg_dev = NULL;
   93 
   94         /* Set pci MaxPayLoad to 256. Implemented to avoid the issue of
   95          * Pci-passthrough causing Maxpayload to be reset to 128 bytes
   96          * when the device is reset.
   97          */
   98         if (pci_get_max_payload(dev) != 256)
   99                 pci_set_max_payload(dev, 256);
  100 
  101         accel_dev = device_get_softc(dev);
  102 
  103         INIT_LIST_HEAD(&accel_dev->crypto_list);
  104         accel_pci_dev = &accel_dev->accel_pci_dev;
  105         accel_pci_dev->pci_dev = dev;
  106 
  107         if (bus_get_domain(dev, &accel_pci_dev->node) != 0)
  108                 accel_pci_dev->node = 0;
  109 
  110         /* Add accel device to accel table.
  111          * This should be called before adf_cleanup_accel is called
  112          */
  113         if (adf_devmgr_add_dev(accel_dev, NULL)) {
  114                 device_printf(dev, "Failed to add new accelerator device.\n");
  115                 return ENXIO;
  116         }
  117 
  118         /* Allocate and configure device configuration structure */
  119         hw_data = malloc(sizeof(*hw_data), M_QAT_4XXX, M_WAITOK | M_ZERO);
  120 
  121         accel_dev->hw_device = hw_data;
  122         adf_init_hw_data_4xxx(accel_dev->hw_device);
  123         accel_pci_dev->revid = pci_get_revid(dev);
  124         hw_data->fuses = pci_read_config(dev, ADF_4XXX_FUSECTL4_OFFSET, 4);
  125         if (accel_pci_dev->revid == 0x00) {
  126                 device_printf(dev, "A0 stepping is not supported.\n");
  127                 ret = ENODEV;
  128                 goto out_err;
  129         }
  130 
  131         /* Get PPAERUCM values and store */
  132         ret = adf_aer_store_ppaerucm_reg(dev, hw_data);
  133         if (ret)
  134                 goto out_err;
  135 
  136         /* Get Accelerators and Accelerators Engines masks */
  137         hw_data->accel_mask = hw_data->get_accel_mask(accel_dev);
  138         hw_data->ae_mask = hw_data->get_ae_mask(accel_dev);
  139 
  140         accel_pci_dev->sku = hw_data->get_sku(hw_data);
  141         /* If the device has no acceleration engines then ignore it. */
  142         if (!hw_data->accel_mask || !hw_data->ae_mask ||
  143             (~hw_data->ae_mask & 0x01)) {
  144                 device_printf(dev, "No acceleration units found\n");
  145                 ret = ENXIO;
  146                 goto out_err;
  147         }
  148 
  149         /* Create device configuration table */
  150         ret = adf_cfg_dev_add(accel_dev);
  151         if (ret)
  152                 goto out_err;
  153         ret = adf_clock_debugfs_add(accel_dev);
  154         if (ret)
  155                 goto out_err;
  156 
  157         pci_set_max_read_req(dev, 1024);
  158 
  159         ret = bus_dma_tag_create(bus_get_dma_tag(dev),
  160                                  1,
  161                                  0,
  162                                  BUS_SPACE_MAXADDR,
  163                                  BUS_SPACE_MAXADDR,
  164                                  NULL,
  165                                  NULL,
  166                                  BUS_SPACE_MAXSIZE,
  167                                  /* BUS_SPACE_UNRESTRICTED */ 1,
  168                                  BUS_SPACE_MAXSIZE,
  169                                  0,
  170                                  NULL,
  171                                  NULL,
  172                                  &accel_dev->dma_tag);
  173         if (ret)
  174                 goto out_err;
  175 
  176         if (hw_data->get_accel_cap) {
  177                 hw_data->accel_capabilities_mask =
  178                     hw_data->get_accel_cap(accel_dev);
  179         }
  180 
  181         /* Find and map all the device's BARS */
  182         i = 0;
  183         for (bar_nr = 0; i < ADF_PCI_MAX_BARS && bar_nr < PCIR_MAX_BAR_0;
  184              bar_nr++) {
  185                 struct adf_bar *bar;
  186 
  187                 rid = PCIR_BAR(bar_nr);
  188                 if (bus_get_resource(dev, SYS_RES_MEMORY, rid, NULL, NULL) != 0)
  189                         continue;
  190                 bar = &accel_pci_dev->pci_bars[i++];
  191                 bar->virt_addr = bus_alloc_resource_any(dev,
  192                                                         SYS_RES_MEMORY,
  193                                                         &rid,
  194                                                         RF_ACTIVE);
  195                 if (!bar->virt_addr) {
  196                         device_printf(dev, "Failed to map BAR %d\n", bar_nr);
  197                         ret = ENXIO;
  198                         goto out_err;
  199                 }
  200                 bar->base_addr = rman_get_start(bar->virt_addr);
  201                 bar->size = rman_get_size(bar->virt_addr);
  202         }
  203         pci_enable_busmaster(dev);
  204 
  205         if (!accel_dev->hw_device->config_device) {
  206                 ret = EFAULT;
  207                 goto out_err;
  208         }
  209 
  210         ret = accel_dev->hw_device->config_device(accel_dev);
  211         if (ret)
  212                 goto out_err;
  213 
  214         ret = adf_dev_init(accel_dev);
  215         if (ret)
  216                 goto out_dev_shutdown;
  217 
  218         ret = adf_dev_start(accel_dev);
  219         if (ret)
  220                 goto out_dev_stop;
  221 
  222         cfg_dev = accel_dev->cfg->dev;
  223         adf_cfg_device_clear(cfg_dev, accel_dev);
  224         free(cfg_dev, M_QAT);
  225         accel_dev->cfg->dev = NULL;
  226         return ret;
  227 out_dev_stop:
  228         adf_dev_stop(accel_dev);
  229 out_dev_shutdown:
  230         adf_dev_shutdown(accel_dev);
  231 out_err:
  232         adf_cleanup_accel(accel_dev);
  233         return ret;
  234 }
  235 
  236 static int
  237 adf_detach(device_t dev)
  238 {
  239         struct adf_accel_dev *accel_dev = device_get_softc(dev);
  240 
  241         if (adf_dev_stop(accel_dev)) {
  242                 device_printf(dev, "Failed to stop QAT accel dev\n");
  243                 return EBUSY;
  244         }
  245 
  246         adf_dev_shutdown(accel_dev);
  247 
  248         adf_cleanup_accel(accel_dev);
  249 
  250         return 0;
  251 }
  252 
  253 static device_method_t adf_methods[] = { DEVMETHOD(device_probe, adf_probe),
  254                                          DEVMETHOD(device_attach, adf_attach),
  255                                          DEVMETHOD(device_detach, adf_detach),
  256 
  257                                          DEVMETHOD_END };
  258 
  259 static driver_t adf_driver = { "qat",
  260                                adf_methods,
  261                                sizeof(struct adf_accel_dev) };
  262 
  263 DRIVER_MODULE_ORDERED(qat_4xxx, pci, adf_driver, NULL, NULL, SI_ORDER_THIRD);
  264 MODULE_VERSION(qat_4xxx, 1);
  265 MODULE_DEPEND(qat_4xxx, qat_common, 1, 1, 1);
  266 MODULE_DEPEND(qat_4xxx, qat_api, 1, 1, 1);
  267 MODULE_DEPEND(qat_4xxx, linuxkpi, 1, 1, 1);

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FreeBSD/Linux Kernel Cross Reference sys/dev/qat/qat_hw/qat_4xxx/adf_drv.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/qat/qat_hw/qat_4xxx/adf_drv.c