git.sur5r.net Git - u-boot/blob - drivers/nvme/nvme-uclass.c

   1 /*
   2  * Copyright (C) 2017 NXP Semiconductors
   3  * Copyright (C) 2017 Bin Meng <bmeng.cn@gmail.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <errno.h>
  10 #include <dm.h>
  11 #include <dm/device.h>
  12 #include "nvme.h"
  13
  14 static int nvme_info_init(struct uclass *uc)
  15 {
  16         struct nvme_info *info = (struct nvme_info *)uc->priv;
  17
  18         info->ns_num = 0;
  19         info->ndev_num = 0;
  20         INIT_LIST_HEAD(&info->dev_list);
  21         nvme_info = info;
  22
  23         return 0;
  24 }
  25
  26 static int nvme_uclass_post_probe(struct udevice *udev)
  27 {
  28         char name[20];
  29         struct udevice *ns_udev;
  30         int i, ret;
  31         struct nvme_dev *ndev = dev_get_priv(udev);
  32
  33         /* Create a blk device for each namespace */
  34         for (i = 0; i < ndev->nn; i++) {
  35                 sprintf(name, "blk#%d", nvme_info->ns_num);
  36
  37                 /* The real blksz and size will be set by nvme_blk_probe() */
  38                 ret = blk_create_devicef(udev, "nvme-blk", name, IF_TYPE_NVME,
  39                                          nvme_info->ns_num++, 512, 0, &ns_udev);
  40                 if (ret) {
  41                         nvme_info->ns_num--;
  42
  43                         return ret;
  44                 }
  45         }
  46
  47         return 0;
  48 }
  49
  50 UCLASS_DRIVER(nvme) = {
  51         .name   = "nvme",
  52         .id     = UCLASS_NVME,
  53         .init   = nvme_info_init,
  54         .post_probe = nvme_uclass_post_probe,
  55         .priv_auto_alloc_size = sizeof(struct nvme_info),
  56 };