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>
---
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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