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mmc: Check support for TRIM operations

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When secure/insecure TRIM operations are supported.
When used as erase command argument it applies the
erase operation to write blocks instead of erase
groups.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
This commit is contained in:
Loic Poulain 2023-01-26 10:24:17 +01:00 committed by Jaehoon Chung
parent 7daa8dd59b
commit eeb739a6fd
2 changed files with 7 additions and 0 deletions
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3
drivers/mmc/mmc.c
View file

@ -2432,6 +2432,9 @@ static int mmc_startup_v4(struct mmc *mmc)
mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
mmc->can_trim =
!!(ext_csd[EXT_CSD_SEC_FEATURE] & EXT_CSD_SEC_FEATURE_TRIM_EN);
return 0;
error:
if (mmc->ext_csd) {

4
include/mmc.h
View file

@ -241,6 +241,7 @@ static inline bool mmc_is_tuning_cmd(uint cmdidx)
#define EXT_CSD_HC_WP_GRP_SIZE 221 /* RO */
#define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */
#define EXT_CSD_BOOT_MULT 226 /* RO */
#define EXT_CSD_SEC_FEATURE 231 /* RO */
#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
#define EXT_CSD_BKOPS_SUPPORT 502 /* RO */
@ -315,6 +316,8 @@ static inline bool mmc_is_tuning_cmd(uint cmdidx)
#define EXT_CSD_WR_DATA_REL_USR (1 << 0) /* user data area WR_REL */
#define EXT_CSD_WR_DATA_REL_GP(x) (1 << ((x)+1)) /* GP part (x+1) WR_REL */
#define EXT_CSD_SEC_FEATURE_TRIM_EN (1 << 4) /* Support secure & insecure trim */
#define R1_ILLEGAL_COMMAND (1 << 22)
#define R1_APP_CMD (1 << 5)
@ -687,6 +690,7 @@ struct mmc {
uint tran_speed;
uint legacy_speed; /* speed for the legacy mode provided by the card */
uint read_bl_len;
bool can_trim;
#if CONFIG_IS_ENABLED(MMC_WRITE)
uint write_bl_len;
uint erase_grp_size; /* in 512-byte sectors */