drivers/raw/cnxk_bphy/cnxk_bphy.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2021 Marvell.
   3  */
   4 #include <rte_bus_pci.h>
   5 #include <rte_common.h>
   6 #include <rte_dev.h>
   7 #include <rte_eal.h>
   8 #include <rte_lcore.h>
   9 #include <rte_pci.h>
  10 #include <rte_rawdev.h>
  11 #include <rte_rawdev_pmd.h>
  12
  13 #include <roc_api.h>
  14
  15 #include "cnxk_bphy_irq.h"
  16
  17 static const struct rte_pci_id pci_bphy_map[] = {
  18         {RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_CNXK_BPHY)},
  19         {
  20                 .vendor_id = 0,
  21         },
  22 };
  23
  24 static void
  25 bphy_rawdev_get_name(char *name, struct rte_pci_device *pci_dev)
  26 {
  27         snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "BPHY:%x:%02x.%x",
  28                  pci_dev->addr.bus, pci_dev->addr.devid,
  29                  pci_dev->addr.function);
  30 }
  31
  32 static const struct rte_rawdev_ops bphy_rawdev_ops = {
  33 };
  34
  35 static int
  36 bphy_rawdev_probe(struct rte_pci_driver *pci_drv,
  37                   struct rte_pci_device *pci_dev)
  38 {
  39         struct bphy_device *bphy_dev = NULL;
  40         char name[RTE_RAWDEV_NAME_MAX_LEN];
  41         struct rte_rawdev *bphy_rawdev;
  42         int ret;
  43
  44         RTE_SET_USED(pci_drv);
  45
  46         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  47                 return 0;
  48
  49         if (!pci_dev->mem_resource[0].addr) {
  50                 plt_err("BARs have invalid values: BAR0 %p\n BAR2 %p",
  51                         pci_dev->mem_resource[0].addr,
  52                         pci_dev->mem_resource[2].addr);
  53                 return -ENODEV;
  54         }
  55
  56         ret = roc_plt_init();
  57         if (ret)
  58                 return ret;
  59
  60         bphy_rawdev_get_name(name, pci_dev);
  61         bphy_rawdev = rte_rawdev_pmd_allocate(name, sizeof(*bphy_dev),
  62                                               rte_socket_id());
  63         if (bphy_rawdev == NULL) {
  64                 plt_err("Failed to allocate rawdev");
  65                 return -ENOMEM;
  66         }
  67
  68         bphy_rawdev->dev_ops = &bphy_rawdev_ops;
  69         bphy_rawdev->device = &pci_dev->device;
  70         bphy_rawdev->driver_name = pci_dev->driver->driver.name;
  71
  72         bphy_dev = (struct bphy_device *)bphy_rawdev->dev_private;
  73         bphy_dev->mem.res0 = pci_dev->mem_resource[0];
  74         bphy_dev->mem.res2 = pci_dev->mem_resource[2];
  75
  76         return 0;
  77 }
  78
  79 static int
  80 bphy_rawdev_remove(struct rte_pci_device *pci_dev)
  81 {
  82         char name[RTE_RAWDEV_NAME_MAX_LEN];
  83         struct rte_rawdev *rawdev;
  84
  85         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  86                 return 0;
  87
  88         if (pci_dev == NULL) {
  89                 plt_err("invalid pci_dev");
  90                 return -EINVAL;
  91         }
  92
  93         rawdev = rte_rawdev_pmd_get_named_dev(name);
  94         if (rawdev == NULL) {
  95                 plt_err("invalid device name (%s)", name);
  96                 return -EINVAL;
  97         }
  98
  99         bphy_rawdev_get_name(name, pci_dev);
 100
 101         return rte_rawdev_pmd_release(rawdev);
 102 }
 103
 104 static struct rte_pci_driver cnxk_bphy_rawdev_pmd = {
 105         .id_table = pci_bphy_map,
 106         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_NEED_IOVA_AS_VA,
 107         .probe = bphy_rawdev_probe,
 108         .remove = bphy_rawdev_remove,
 109 };
 110
 111 RTE_PMD_REGISTER_PCI(bphy_rawdev_pci_driver, cnxk_bphy_rawdev_pmd);
 112 RTE_PMD_REGISTER_PCI_TABLE(bphy_rawdev_pci_driver, pci_bphy_map);
 113 RTE_PMD_REGISTER_KMOD_DEP(bphy_rawdev_pci_driver, "vfio-pci");