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mmc: extend the mmc hardware partitioning API with write reliability

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The eMMC partition write reliability settings are to be set while
partitioning a device, as per the eMMC spec, so changes to these
attributes needs to be done in the hardware partitioning API.
This commit adds such support.

Signed-off-by: Diego Santa Cruz <Diego.SantaCruz@spinetix.com>
This commit is contained in:
Diego Santa Cruz
2014-12-23 10:50:31 +01:00
committed by Pantelis Antoniou
parent c599f53b57
commit 8dda5b0e60
2 changed files with 51 additions and 1 deletions
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13
include/mmc.h
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@@ -155,6 +155,8 @@
#define EXT_CSD_MAX_ENH_SIZE_MULT 157 /* R */
#define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */
#define EXT_CSD_RST_N_FUNCTION 162 /* R/W */
#define EXT_CSD_WR_REL_PARAM 166 /* R */
#define EXT_CSD_WR_REL_SET 167 /* R/W */
#define EXT_CSD_RPMB_MULT 168 /* RO */
#define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
#define EXT_CSD_BOOT_BUS_WIDTH 177
@@ -207,6 +209,11 @@
#define EXT_CSD_ENH_USR (1 << 0) /* user data area is enhanced */
#define EXT_CSD_ENH_GP(x) (1 << ((x)+1)) /* GP part (x+1) is enhanced */
#define EXT_CSD_HS_CTRL_REL (1 << 0) /* host controlled WR_REL_SET */
#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 R1_ILLEGAL_COMMAND (1 << 22)
#define R1_APP_CMD (1 << 5)
@@ -337,10 +344,14 @@ struct mmc_hwpart_conf {
struct {
uint enh_start; /* in 512-byte sectors */
uint enh_size; /* in 512-byte sectors, if 0 no enh area */
unsigned wr_rel_change : 1;
unsigned wr_rel_set : 1;
} user;
struct {
uint size; /* in 512-byte sectors */
int enhanced;
unsigned enhanced : 1;
unsigned wr_rel_change : 1;
unsigned wr_rel_set : 1;
} gp_part[4];
};