mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
982388eaa9
NVM Express (NVMe) is a register level interface that allows host software to communicate with a non-volatile memory subsystem. This interface is optimized for enterprise and client solid state drives, typically attached to the PCI express interface. This adds a U-Boot driver support of devices that follow the NVMe standard [1] and supports basic read/write operations. Tested with a 400GB Intel SSD 750 series NVMe card with controller id 8086:0953. [1] http://www.nvmexpress.org/resources/specifications/ Signed-off-by: Zhikang Zhang <zhikang.zhang@nxp.com> Signed-off-by: Wenbin Song <wenbin.song@nxp.com> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2017 NXP Semiconductors
|
|
* Copyright (C) 2017 Bin Meng <bmeng.cn@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <errno.h>
|
|
#include <dm.h>
|
|
#include <dm/device.h>
|
|
#include "nvme.h"
|
|
|
|
static int nvme_info_init(struct uclass *uc)
|
|
{
|
|
struct nvme_info *info = (struct nvme_info *)uc->priv;
|
|
|
|
info->ns_num = 0;
|
|
info->ndev_num = 0;
|
|
INIT_LIST_HEAD(&info->dev_list);
|
|
nvme_info = info;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nvme_uclass_post_probe(struct udevice *udev)
|
|
{
|
|
char name[20];
|
|
char *str;
|
|
struct udevice *ns_udev;
|
|
int i, ret;
|
|
struct nvme_dev *ndev = dev_get_priv(udev);
|
|
|
|
/* Create a blk device for each namespace */
|
|
for (i = 0; i < ndev->nn; i++) {
|
|
sprintf(name, "nvme-blk#%d", nvme_info->ns_num);
|
|
str = strdup(name);
|
|
if (!str)
|
|
return -ENOMEM;
|
|
|
|
/* The real blksz and size will be set by nvme_blk_probe() */
|
|
ret = blk_create_device(udev, "nvme-blk", str, IF_TYPE_NVME,
|
|
nvme_info->ns_num++, 512, 0, &ns_udev);
|
|
if (ret) {
|
|
free(str);
|
|
nvme_info->ns_num--;
|
|
|
|
return ret;
|
|
}
|
|
device_set_name_alloced(ns_udev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(nvme) = {
|
|
.name = "nvme",
|
|
.id = UCLASS_NVME,
|
|
.init = nvme_info_init,
|
|
.post_probe = nvme_uclass_post_probe,
|
|
.priv_auto_alloc_size = sizeof(struct nvme_info),
|
|
};
|