u-boot/drivers/nvme/nvme_show.c
Bin Meng 704e040a51 nvme: Apply cache operations on the DMA buffers
So far cache operations are only applied on the submission queue and
completion queue, but they are missing in other places like identify
and block read/write routines.

In order to correctly operate on the caches, the DMA buffer passed
to identify routine must be allocated properly on the stack with the
existing macro ALLOC_CACHE_ALIGN_BUFFER().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-08-28 07:17:13 -04:00

130 lines
3.8 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 <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;
ALLOC_CACHE_ALIGN_BUFFER(char, buf_ns, sizeof(struct nvme_id_ns));
struct nvme_id_ns *id = (struct nvme_id_ns *)buf_ns;
ALLOC_CACHE_ALIGN_BUFFER(char, buf_ctrl, sizeof(struct nvme_id_ctrl));
struct nvme_id_ctrl *ctrl = (struct nvme_id_ctrl *)buf_ctrl;
if (nvme_identify(dev, 0, 1, (dma_addr_t)ctrl))
return -EIO;
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);
if (nvme_identify(dev, ns->ns_id, 0, (dma_addr_t)id))
return -EIO;
print_formats(id, ns);
print_data_protect_cap(id->dpc, ns->devnum);
print_metadata_cap(id->mc, ns->devnum);
return 0;
}