drivers/crypto/nitrox/nitrox_device.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include <rte_malloc.h>
   6
   7 #include "nitrox_device.h"
   8 #include "nitrox_hal.h"
   9
  10 #define PCI_VENDOR_ID_CAVIUM    0x177d
  11 #define NITROX_V_PCI_VF_DEV_ID  0x13
  12
  13 TAILQ_HEAD(ndev_list, nitrox_device);
  14 static struct ndev_list ndev_list = TAILQ_HEAD_INITIALIZER(ndev_list);
  15
  16 static struct nitrox_device *
  17 ndev_allocate(struct rte_pci_device *pdev)
  18 {
  19         struct nitrox_device *ndev;
  20
  21         ndev = rte_zmalloc_socket("nitrox device", sizeof(*ndev),
  22                                    RTE_CACHE_LINE_SIZE,
  23                                    pdev->device.numa_node);
  24         if (!ndev)
  25                 return NULL;
  26
  27         TAILQ_INSERT_TAIL(&ndev_list, ndev, next);
  28         return ndev;
  29 }
  30
  31 static void
  32 ndev_init(struct nitrox_device *ndev, struct rte_pci_device *pdev)
  33 {
  34         enum nitrox_vf_mode vf_mode;
  35
  36         ndev->pdev = pdev;
  37         ndev->bar_addr = pdev->mem_resource[0].addr;
  38         vf_mode = vf_get_vf_config_mode(ndev->bar_addr);
  39         ndev->nr_queues = vf_config_mode_to_nr_queues(vf_mode);
  40 }
  41
  42 static struct nitrox_device *
  43 find_ndev(struct rte_pci_device *pdev)
  44 {
  45         struct nitrox_device *ndev;
  46
  47         TAILQ_FOREACH(ndev, &ndev_list, next)
  48                 if (ndev->pdev == pdev)
  49                         return ndev;
  50
  51         return NULL;
  52 }
  53
  54 static void
  55 ndev_release(struct nitrox_device *ndev)
  56 {
  57         if (!ndev)
  58                 return;
  59
  60         TAILQ_REMOVE(&ndev_list, ndev, next);
  61         rte_free(ndev);
  62 }
  63
  64 static int
  65 nitrox_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
  66                 struct rte_pci_device *pdev)
  67 {
  68         struct nitrox_device *ndev;
  69
  70         /* Nitrox CSR space */
  71         if (!pdev->mem_resource[0].addr)
  72                 return -EINVAL;
  73
  74         ndev = ndev_allocate(pdev);
  75         if (!ndev)
  76                 return -ENOMEM;
  77
  78         ndev_init(ndev, pdev);
  79         return 0;
  80 }
  81
  82 static int
  83 nitrox_pci_remove(struct rte_pci_device *pdev)
  84 {
  85         struct nitrox_device *ndev;
  86
  87         ndev = find_ndev(pdev);
  88         if (!ndev)
  89                 return -ENODEV;
  90
  91         ndev_release(ndev);
  92         return 0;
  93 }
  94
  95 static struct rte_pci_id pci_id_nitrox_map[] = {
  96         {
  97                 /* Nitrox 5 VF */
  98                 RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, NITROX_V_PCI_VF_DEV_ID)
  99         },
 100         {.device_id = 0},
 101 };
 102
 103 static struct rte_pci_driver nitrox_pmd = {
 104         .id_table       = pci_id_nitrox_map,
 105         .drv_flags      = RTE_PCI_DRV_NEED_MAPPING,
 106         .probe          = nitrox_pci_probe,
 107         .remove         = nitrox_pci_remove,
 108 };
 109
 110 RTE_PMD_REGISTER_PCI(nitrox, nitrox_pmd);
 111 RTE_PMD_REGISTER_PCI_TABLE(nitrox, pci_id_nitrox_map);