drivers/raw/ioat/ioat_rawdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Intel Corporation
   3  */
   4
   5 #include <rte_cycles.h>
   6 #include <rte_bus_pci.h>
   7 #include <rte_rawdev_pmd.h>
   8
   9 #include "rte_ioat_rawdev.h"
  10
  11 /* Dynamic log type identifier */
  12 int ioat_pmd_logtype;
  13
  14 static struct rte_pci_driver ioat_pmd_drv;
  15
  16 #define IOAT_VENDOR_ID          0x8086
  17 #define IOAT_DEVICE_ID_SKX      0x2021
  18 #define IOAT_DEVICE_ID_BDX0     0x6f20
  19 #define IOAT_DEVICE_ID_BDX1     0x6f21
  20 #define IOAT_DEVICE_ID_BDX2     0x6f22
  21 #define IOAT_DEVICE_ID_BDX3     0x6f23
  22 #define IOAT_DEVICE_ID_BDX4     0x6f24
  23 #define IOAT_DEVICE_ID_BDX5     0x6f25
  24 #define IOAT_DEVICE_ID_BDX6     0x6f26
  25 #define IOAT_DEVICE_ID_BDX7     0x6f27
  26 #define IOAT_DEVICE_ID_BDXE     0x6f2E
  27 #define IOAT_DEVICE_ID_BDXF     0x6f2F
  28
  29 #define IOAT_PMD_LOG(level, fmt, args...) rte_log(RTE_LOG_ ## level, \
  30         ioat_pmd_logtype, "%s(): " fmt "\n", __func__, ##args)
  31
  32 #define IOAT_PMD_DEBUG(fmt, args...)  IOAT_PMD_LOG(DEBUG, fmt, ## args)
  33 #define IOAT_PMD_INFO(fmt, args...)   IOAT_PMD_LOG(INFO, fmt, ## args)
  34 #define IOAT_PMD_ERR(fmt, args...)    IOAT_PMD_LOG(ERR, fmt, ## args)
  35 #define IOAT_PMD_WARN(fmt, args...)   IOAT_PMD_LOG(WARNING, fmt, ## args)
  36
  37 static int
  38 ioat_rawdev_create(const char *name, struct rte_pci_device *dev)
  39 {
  40         static const struct rte_rawdev_ops ioat_rawdev_ops = {
  41         };
  42
  43         struct rte_rawdev *rawdev = NULL;
  44         struct rte_ioat_rawdev *ioat = NULL;
  45         const struct rte_memzone *mz = NULL;
  46         char mz_name[RTE_MEMZONE_NAMESIZE];
  47         int ret = 0;
  48         int retry = 0;
  49
  50         if (!name) {
  51                 IOAT_PMD_ERR("Invalid name of the device!");
  52                 ret = -EINVAL;
  53                 goto cleanup;
  54         }
  55
  56         /* Allocate device structure */
  57         rawdev = rte_rawdev_pmd_allocate(name, sizeof(struct rte_ioat_rawdev),
  58                                          dev->device.numa_node);
  59         if (rawdev == NULL) {
  60                 IOAT_PMD_ERR("Unable to allocate raw device");
  61                 ret = -ENOMEM;
  62                 goto cleanup;
  63         }
  64
  65         snprintf(mz_name, sizeof(mz_name), "rawdev%u_private", rawdev->dev_id);
  66         mz = rte_memzone_reserve(mz_name, sizeof(struct rte_ioat_rawdev),
  67                         dev->device.numa_node, RTE_MEMZONE_IOVA_CONTIG);
  68         if (mz == NULL) {
  69                 IOAT_PMD_ERR("Unable to reserve memzone for private data\n");
  70                 ret = -ENOMEM;
  71                 goto cleanup;
  72         }
  73
  74         rawdev->dev_private = mz->addr;
  75         rawdev->dev_ops = &ioat_rawdev_ops;
  76         rawdev->device = &dev->device;
  77         rawdev->driver_name = dev->device.driver->name;
  78
  79         ioat = rawdev->dev_private;
  80         ioat->rawdev = rawdev;
  81         ioat->mz = mz;
  82         ioat->regs = dev->mem_resource[0].addr;
  83         ioat->ring_size = 0;
  84         ioat->desc_ring = NULL;
  85         ioat->status_addr = ioat->mz->iova +
  86                         offsetof(struct rte_ioat_rawdev, status);
  87
  88         /* do device initialization - reset and set error behaviour */
  89         if (ioat->regs->chancnt != 1)
  90                 IOAT_PMD_ERR("%s: Channel count == %d\n", __func__,
  91                                 ioat->regs->chancnt);
  92
  93         if (ioat->regs->chanctrl & 0x100) { /* locked by someone else */
  94                 IOAT_PMD_WARN("%s: Channel appears locked\n", __func__);
  95                 ioat->regs->chanctrl = 0;
  96         }
  97
  98         ioat->regs->chancmd = RTE_IOAT_CHANCMD_SUSPEND;
  99         rte_delay_ms(1);
 100         ioat->regs->chancmd = RTE_IOAT_CHANCMD_RESET;
 101         rte_delay_ms(1);
 102         while (ioat->regs->chancmd & RTE_IOAT_CHANCMD_RESET) {
 103                 ioat->regs->chainaddr = 0;
 104                 rte_delay_ms(1);
 105                 if (++retry >= 200) {
 106                         IOAT_PMD_ERR("%s: cannot reset device. CHANCMD=0x%"PRIx8", CHANSTS=0x%"PRIx64", CHANERR=0x%"PRIx32"\n",
 107                                         __func__,
 108                                         ioat->regs->chancmd,
 109                                         ioat->regs->chansts,
 110                                         ioat->regs->chanerr);
 111                         ret = -EIO;
 112                 }
 113         }
 114         ioat->regs->chanctrl = RTE_IOAT_CHANCTRL_ANY_ERR_ABORT_EN |
 115                         RTE_IOAT_CHANCTRL_ERR_COMPLETION_EN;
 116
 117         return 0;
 118
 119 cleanup:
 120         if (rawdev)
 121                 rte_rawdev_pmd_release(rawdev);
 122
 123         return ret;
 124 }
 125
 126 static int
 127 ioat_rawdev_destroy(const char *name)
 128 {
 129         int ret;
 130         struct rte_rawdev *rdev;
 131
 132         if (!name) {
 133                 IOAT_PMD_ERR("Invalid device name");
 134                 return -EINVAL;
 135         }
 136
 137         rdev = rte_rawdev_pmd_get_named_dev(name);
 138         if (!rdev) {
 139                 IOAT_PMD_ERR("Invalid device name (%s)", name);
 140                 return -EINVAL;
 141         }
 142
 143         if (rdev->dev_private != NULL) {
 144                 struct rte_ioat_rawdev *ioat = rdev->dev_private;
 145                 rdev->dev_private = NULL;
 146                 rte_memzone_free(ioat->mz);
 147         }
 148
 149         /* rte_rawdev_close is called by pmd_release */
 150         ret = rte_rawdev_pmd_release(rdev);
 151         if (ret)
 152                 IOAT_PMD_DEBUG("Device cleanup failed");
 153
 154         return 0;
 155 }
 156
 157 static int
 158 ioat_rawdev_probe(struct rte_pci_driver *drv, struct rte_pci_device *dev)
 159 {
 160         char name[32];
 161         int ret = 0;
 162
 163
 164         rte_pci_device_name(&dev->addr, name, sizeof(name));
 165         IOAT_PMD_INFO("Init %s on NUMA node %d", name, dev->device.numa_node);
 166
 167         dev->device.driver = &drv->driver;
 168         ret = ioat_rawdev_create(name, dev);
 169         return ret;
 170 }
 171
 172 static int
 173 ioat_rawdev_remove(struct rte_pci_device *dev)
 174 {
 175         char name[32];
 176         int ret;
 177
 178         rte_pci_device_name(&dev->addr, name, sizeof(name));
 179
 180         IOAT_PMD_INFO("Closing %s on NUMA node %d",
 181                         name, dev->device.numa_node);
 182
 183         ret = ioat_rawdev_destroy(name);
 184         return ret;
 185 }
 186
 187 static const struct rte_pci_id pci_id_ioat_map[] = {
 188         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_SKX) },
 189         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX0) },
 190         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX1) },
 191         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX2) },
 192         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX3) },
 193         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX4) },
 194         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX5) },
 195         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX6) },
 196         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDX7) },
 197         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDXE) },
 198         { RTE_PCI_DEVICE(IOAT_VENDOR_ID, IOAT_DEVICE_ID_BDXF) },
 199         { .vendor_id = 0, /* sentinel */ },
 200 };
 201
 202 static struct rte_pci_driver ioat_pmd_drv = {
 203         .id_table = pci_id_ioat_map,
 204         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
 205                      RTE_PCI_DRV_IOVA_AS_VA,
 206         .probe = ioat_rawdev_probe,
 207         .remove = ioat_rawdev_remove,
 208 };
 209
 210 RTE_PMD_REGISTER_PCI(IOAT_PMD_RAWDEV_NAME, ioat_pmd_drv);
 211 RTE_PMD_REGISTER_PCI_TABLE(IOAT_PMD_RAWDEV_NAME, pci_id_ioat_map);
 212 RTE_PMD_REGISTER_KMOD_DEP(IOAT_PMD_RAWDEV_NAME, "* igb_uio | uio_pci_generic");
 213
 214 RTE_INIT(ioat_pmd_init_log)
 215 {
 216         ioat_pmd_logtype = rte_log_register(IOAT_PMD_LOG_NAME);
 217         if (ioat_pmd_logtype >= 0)
 218                 rte_log_set_level(ioat_pmd_logtype, RTE_LOG_INFO);
 219 }