drivers/nvme/nvme_show.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2017 NXP Semiconductors
 * Copyright (C) 2017 Bin Meng <bmeng.cn@gmail.com>
 */

#include <dm.h>
#include <errno.h>
#include <memalign.h>
#include <nvme.h>
#include "nvme.h"

static void print_optional_admin_cmd(u16 oacs, int devnum)
{
	printf("Blk device %d: Optional Admin Command Support:\n",
	       devnum);
	printf("\tNamespace Management/Attachment: %s\n",
	       oacs & 0x08 ? "yes" : "no");
	printf("\tFirmware Commit/Image download: %s\n",
	       oacs & 0x04 ? "yes" : "no");
	printf("\tFormat NVM: %s\n",
	       oacs & 0x02 ? "yes" : "no");
	printf("\tSecurity Send/Receive: %s\n",
	       oacs & 0x01 ? "yes" : "no");
}

static void print_optional_nvm_cmd(u16 oncs, int devnum)
{
	printf("Blk device %d: Optional NVM Command Support:\n",
	       devnum);
	printf("\tReservation: %s\n",
	       oncs & 0x10 ? "yes" : "no");
	printf("\tSave/Select field in the Set/Get features: %s\n",
	       oncs & 0x08 ? "yes" : "no");
	printf("\tWrite Zeroes: %s\n",
	       oncs & 0x04 ? "yes" : "no");
	printf("\tDataset Management: %s\n",
	       oncs & 0x02 ? "yes" : "no");
	printf("\tWrite Uncorrectable: %s\n",
	       oncs & 0x01 ? "yes" : "no");
}

static void print_format_nvme_attributes(u8 fna, int devnum)
{
	printf("Blk device %d: Format NVM Attributes:\n", devnum);
	printf("\tSupport Cryptographic Erase: %s\n",
	       fna & 0x04 ? "yes" : "No");
	printf("\tSupport erase a particular namespace: %s\n",
	       fna & 0x02 ? "No" : "Yes");
	printf("\tSupport format a particular namespace: %s\n",
	       fna & 0x01 ? "No" : "Yes");
}

static void print_format(struct nvme_lbaf *lbaf)
{
	u8 str[][10] = {"Best", "Better", "Good", "Degraded"};

	printf("\t\tMetadata Size: %d\n", le16_to_cpu(lbaf->ms));
	printf("\t\tLBA Data Size: %d\n", 1 << lbaf->ds);
	printf("\t\tRelative Performance: %s\n", str[lbaf->rp & 0x03]);
}

static void print_formats(struct nvme_id_ns *id, struct nvme_ns *ns)
{
	int i;

	printf("Blk device %d: LBA Format Support:\n", ns->devnum);

	for (i = 0; i < id->nlbaf; i++) {
		printf("\tLBA Foramt %d Support: ", i);
		if (i == ns->flbas)
			printf("(current)\n");
		else
			printf("\n");
		print_format(id->lbaf + i);
	}
}

static void print_data_protect_cap(u8 dpc, int devnum)
{
	printf("Blk device %d: End-to-End Data", devnum);
	printf("Protect Capabilities:\n");
	printf("\tAs last eight bytes: %s\n",
	       dpc & 0x10 ? "yes" : "No");
	printf("\tAs first eight bytes: %s\n",
	       dpc & 0x08 ? "yes" : "No");
	printf("\tSupport Type3: %s\n",
	       dpc & 0x04 ? "yes" : "No");
	printf("\tSupport Type2: %s\n",
	       dpc & 0x02 ? "yes" : "No");
	printf("\tSupport Type1: %s\n",
	       dpc & 0x01 ? "yes" : "No");
}

static void print_metadata_cap(u8 mc, int devnum)
{
	printf("Blk device %d: Metadata capabilities:\n", devnum);
	printf("\tAs part of a separate buffer: %s\n",
	       mc & 0x02 ? "yes" : "No");
	printf("\tAs part of an extended data LBA: %s\n",
	       mc & 0x01 ? "yes" : "No");
}

int nvme_print_info(struct udevice *udev)
{
	struct nvme_ns *ns = dev_get_priv(udev);
	struct nvme_dev *dev = ns->dev;
	struct nvme_id_ctrl *ctrl;
	struct nvme_id_ns *id;
	int ret = 0;

	ctrl = memalign(dev->page_size, sizeof(struct nvme_id_ctrl));
	if (!ctrl)
		return -ENOMEM;

	if (nvme_identify(dev, 0, 1, (dma_addr_t)(long)ctrl)) {
		ret = -EIO;
		goto free_ctrl;
	}

	print_optional_admin_cmd(le16_to_cpu(ctrl->oacs), ns->devnum);
	print_optional_nvm_cmd(le16_to_cpu(ctrl->oncs), ns->devnum);
	print_format_nvme_attributes(ctrl->fna, ns->devnum);

	id = memalign(dev->page_size, sizeof(struct nvme_id_ns));
	if (!id) {
		ret = -ENOMEM;
		goto free_ctrl;
	}

	if (nvme_identify(dev, ns->ns_id, 0, (dma_addr_t)(long)id)) {
		ret = -EIO;
		goto free_id;
	}

	print_formats(id, ns);
	print_data_protect_cap(id->dpc, ns->devnum);
	print_metadata_cap(id->mc, ns->devnum);

free_id:
	free(id);
free_ctrl:
	free(ctrl);
	return ret;
}