On 10 June 2016 at 10:28, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote:
> Display Command Queue information when printing Extended CSD
> Example:
>
> # mmc extcsd read /dev/mmcblk0 | grep CMDQ
> Command Queue Support [CMDQ_SUPPORT]: 0x01
> Command Queue Depth [CMDQ_DEPTH]: 16
> Command Enabled [CMDQ_MODE_EN]: 0x01
>
> Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Reviewed-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Kind regards
Uffe
> ---
> mmc.h | 3 +++
> mmc_cmds.c | 9 +++++++++
> 2 files changed, 12 insertions(+)
>
> diff --git a/mmc.h b/mmc.h
> index 8c77fd5572eb..a3d732c7215c 100644
> --- a/mmc.h
> +++ b/mmc.h
> @@ -55,6 +55,8 @@
> #define EXT_CSD_FFU_ARG_2 489 /* RO */
> #define EXT_CSD_FFU_ARG_1 488 /* RO */
> #define EXT_CSD_FFU_ARG_0 487 /* RO */
> +#define EXT_CSD_CMDQ_DEPTH 307 /* RO */
> +#define EXT_CSD_CMDQ_SUPPORT 308 /* RO */
> #define EXT_CSD_NUM_OF_FW_SEC_PROG_3 305 /* RO */
> #define EXT_CSD_NUM_OF_FW_SEC_PROG_2 304 /* RO */
> #define EXT_CSD_NUM_OF_FW_SEC_PROG_1 303 /* RO */
> @@ -119,6 +121,7 @@
> #define EXT_CSD_MODE_CONFIG 30
> #define EXT_CSD_MODE_OPERATION_CODES 29 /* W */
> #define EXT_CSD_FFU_STATUS 26 /* R */
> +#define EXT_CSD_CMDQ_MODE_EN 15 /* R/W */
>
> /*
> * WR_REL_PARAM field definitions
> diff --git a/mmc_cmds.c b/mmc_cmds.c
> index 36276106b7bf..295d50541dee 100644
> --- a/mmc_cmds.c
> +++ b/mmc_cmds.c
> @@ -1723,6 +1723,15 @@ int do_read_extcsd(int nargs, char **argv)
> printf("eMMC Firmware Version: %s\n",
> (char*)&ext_csd[EXT_CSD_FIRMWARE_VERSION]);
> }
> +
> + if (ext_csd_rev >= 8) {
> + printf("Command Queue Support [CMDQ_SUPPORT]: 0x%02x\n",
> + ext_csd[EXT_CSD_CMDQ_SUPPORT]);
> + printf("Command Queue Depth [CMDQ_DEPTH]: %u\n",
> + (ext_csd[EXT_CSD_CMDQ_DEPTH] & 0x1f) + 1);
> + printf("Command Enabled [CMDQ_MODE_EN]: 0x%02x\n",
> + ext_csd[EXT_CSD_CMDQ_MODE_EN]);
> + }
> out_free:
> return ret;
> }
> --
> 1.9.1
>
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