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authorSeungwon Jeon <tgih.jun@samsung.com>2011-10-14 01:03:21 -0400
committerChris Ball <cjb@laptop.org>2011-10-26 16:32:28 -0400
commit881d1c25f765938a95def5afe39486ce39f9fc96 (patch)
tree694d5ea1b3fba2c28cc110123f2ca50b4408f309 /include/linux/mmc
parent71fe3eb0d006861bdae57e93975b6ae3d9b55e99 (diff)
mmc: core: Add cache control for eMMC4.5 device
This patch adds cache feature of eMMC4.5 Spec. If device supports cache capability, host can utilize some specific operations. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc')
-rw-r--r--include/linux/mmc/card.h2
-rw-r--r--include/linux/mmc/core.h2
-rw-r--r--include/linux/mmc/host.h3
-rw-r--r--include/linux/mmc/mmc.h3
4 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 551378508784..32492b78aed6 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -51,6 +51,7 @@ struct mmc_ext_csd {
51 u8 rel_sectors; 51 u8 rel_sectors;
52 u8 rel_param; 52 u8 rel_param;
53 u8 part_config; 53 u8 part_config;
54 u8 cache_ctrl;
54 u8 rst_n_function; 55 u8 rst_n_function;
55 unsigned int part_time; /* Units: ms */ 56 unsigned int part_time; /* Units: ms */
56 unsigned int sa_timeout; /* Units: 100ns */ 57 unsigned int sa_timeout; /* Units: 100ns */
@@ -67,6 +68,7 @@ struct mmc_ext_csd {
67 bool enhanced_area_en; /* enable bit */ 68 bool enhanced_area_en; /* enable bit */
68 unsigned long long enhanced_area_offset; /* Units: Byte */ 69 unsigned long long enhanced_area_offset; /* Units: Byte */
69 unsigned int enhanced_area_size; /* Units: KB */ 70 unsigned int enhanced_area_size; /* Units: KB */
71 unsigned int cache_size; /* Units: KB */
70 u8 raw_partition_support; /* 160 */ 72 u8 raw_partition_support; /* 160 */
71 u8 raw_erased_mem_count; /* 181 */ 73 u8 raw_erased_mem_count; /* 181 */
72 u8 raw_ext_csd_structure; /* 194 */ 74 u8 raw_ext_csd_structure; /* 194 */
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index e918120235bd..67bac374d122 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -177,6 +177,8 @@ extern void mmc_release_host(struct mmc_host *host);
177extern void mmc_do_release_host(struct mmc_host *host); 177extern void mmc_do_release_host(struct mmc_host *host);
178extern int mmc_try_claim_host(struct mmc_host *host); 178extern int mmc_try_claim_host(struct mmc_host *host);
179 179
180extern int mmc_flush_cache(struct mmc_card *);
181
180/** 182/**
181 * mmc_claim_host - exclusively claim a host 183 * mmc_claim_host - exclusively claim a host
182 * @host: mmc host to claim 184 * @host: mmc host to claim
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index cd10208d9a06..16e9338944e8 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -239,6 +239,7 @@ struct mmc_host {
239 unsigned int caps2; /* More host capabilities */ 239 unsigned int caps2; /* More host capabilities */
240 240
241#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ 241#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
242#define MMC_CAP2_CACHE_CTRL (1 << 1) /* Allow cache control */
242#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */ 243#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */
243 244
244 mmc_pm_flag_t pm_caps; /* supported pm features */ 245 mmc_pm_flag_t pm_caps; /* supported pm features */
@@ -349,6 +350,8 @@ extern int mmc_power_restore_host(struct mmc_host *host);
349extern void mmc_detect_change(struct mmc_host *, unsigned long delay); 350extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
350extern void mmc_request_done(struct mmc_host *, struct mmc_request *); 351extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
351 352
353extern int mmc_cache_ctrl(struct mmc_host *, u8);
354
352static inline void mmc_signal_sdio_irq(struct mmc_host *host) 355static inline void mmc_signal_sdio_irq(struct mmc_host *host)
353{ 356{
354 host->ops->enable_sdio_irq(host, 0); 357 host->ops->enable_sdio_irq(host, 0);
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 8a05a21fc7c3..160e4c5bdae0 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -270,6 +270,8 @@ struct _mmc_csd {
270 * EXT_CSD fields 270 * EXT_CSD fields
271 */ 271 */
272 272
273#define EXT_CSD_FLUSH_CACHE 32 /* W */
274#define EXT_CSD_CACHE_CTRL 33 /* R/W */
273#define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */ 275#define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */
274#define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ 276#define EXT_CSD_GP_SIZE_MULT 143 /* R/W */
275#define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ 277#define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */
@@ -308,6 +310,7 @@ struct _mmc_csd {
308#define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */ 310#define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */
309#define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */ 311#define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */
310#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */ 312#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
313#define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */
311 314
312/* 315/*
313 * EXT_CSD field definitions 316 * EXT_CSD field definitions