From 1a41313e7f8c5b724a2e3ff66558dbe811844423 Mon Sep 17 00:00:00 2001 From: Kyungsik Lee Date: Fri, 3 Aug 2012 00:58:03 +0000 Subject: mmc: core: Remove bounce buffer in mmc_send_cxd_data() It is expected that Extended CSD register (the size of this register is larger than CID/CSD) will be referenced more frequently as more fields have been added to Extended CSD and it seems that it is not a good option to double the memory used. This patch is intended to avoid the use of bounce buffer for reading Extended CSD register in mmc_send_cxd_data(). It will provide a better performance gain by removing memcpy() overhead for a half KiB and a redundant bounce buffer allocated repeatedly at the cost of providing DMA-capable buffer from upper caller (but on-stack buffer is allowed with no performance gain). Signed-off-by: Kyungsik Lee Reviewed-by: Venkatraman S Signed-off-by: Chris Ball --- drivers/mmc/core/mmc_ops.c | 58 +++++++++++++++++++++++++++++++++------------- 1 file changed, 42 insertions(+), 16 deletions(-) (limited to 'drivers/mmc/core/mmc_ops.c') diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 0ed2cc5f35b..225371a2886 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -230,6 +230,10 @@ mmc_send_cxd_native(struct mmc_host *host, u32 arg, u32 *cxd, int opcode) return 0; } +/* + * NOTE: void *buf, caller for the buf is required to use DMA-capable + * buffer or on-stack buffer (with some overhead in callee). + */ static int mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, u32 opcode, void *buf, unsigned len) @@ -239,13 +243,19 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, struct mmc_data data = {0}; struct scatterlist sg; void *data_buf; + int is_on_stack; - /* dma onto stack is unsafe/nonportable, but callers to this - * routine normally provide temporary on-stack buffers ... - */ - data_buf = kmalloc(len, GFP_KERNEL); - if (data_buf == NULL) - return -ENOMEM; + is_on_stack = object_is_on_stack(buf); + if (is_on_stack) { + /* + * dma onto stack is unsafe/nonportable, but callers to this + * routine normally provide temporary on-stack buffers ... + */ + data_buf = kmalloc(len, GFP_KERNEL); + if (!data_buf) + return -ENOMEM; + } else + data_buf = buf; mrq.cmd = &cmd; mrq.data = &data; @@ -280,8 +290,10 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, mmc_wait_for_req(host, &mrq); - memcpy(buf, data_buf, len); - kfree(data_buf); + if (is_on_stack) { + memcpy(buf, data_buf, len); + kfree(data_buf); + } if (cmd.error) return cmd.error; @@ -294,24 +306,32 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, int mmc_send_csd(struct mmc_card *card, u32 *csd) { int ret, i; + u32 *csd_tmp; if (!mmc_host_is_spi(card->host)) return mmc_send_cxd_native(card->host, card->rca << 16, csd, MMC_SEND_CSD); - ret = mmc_send_cxd_data(card, card->host, MMC_SEND_CSD, csd, 16); + csd_tmp = kmalloc(16, GFP_KERNEL); + if (!csd_tmp) + return -ENOMEM; + + ret = mmc_send_cxd_data(card, card->host, MMC_SEND_CSD, csd_tmp, 16); if (ret) - return ret; + goto err; for (i = 0;i < 4;i++) - csd[i] = be32_to_cpu(csd[i]); + csd[i] = be32_to_cpu(csd_tmp[i]); - return 0; +err: + kfree(csd_tmp); + return ret; } int mmc_send_cid(struct mmc_host *host, u32 *cid) { int ret, i; + u32 *cid_tmp; if (!mmc_host_is_spi(host)) { if (!host->card) @@ -320,14 +340,20 @@ int mmc_send_cid(struct mmc_host *host, u32 *cid) cid, MMC_SEND_CID); } - ret = mmc_send_cxd_data(NULL, host, MMC_SEND_CID, cid, 16); + cid_tmp = kmalloc(16, GFP_KERNEL); + if (!cid_tmp) + return -ENOMEM; + + ret = mmc_send_cxd_data(NULL, host, MMC_SEND_CID, cid_tmp, 16); if (ret) - return ret; + goto err; for (i = 0;i < 4;i++) - cid[i] = be32_to_cpu(cid[i]); + cid[i] = be32_to_cpu(cid_tmp[i]); - return 0; +err: + kfree(cid_tmp); + return ret; } int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd) -- cgit v1.2.3-70-g09d2 From 950d56acce5d401f477b91d0177605b543d63d07 Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Mon, 17 Sep 2012 08:42:02 +0000 Subject: mmc: support BKOPS feature for eMMC Enable eMMC background operations (BKOPS) feature. If URGENT_BKOPS is set after a response, note that BKOPS are required. Immediately run BKOPS if required. Read/write operations should be requested during BKOPS(LEVEL-1), then issue HPI to interrupt the ongoing BKOPS and service the foreground operation. (This patch only controls the LEVEL2/3.) When repeating the writing 1GB data, at a certain time, performance is decreased. At that time, card triggers the Level-3 or Level-2. After running bkops, performance is recovered. Future considerations: * Check BKOPS_LEVEL=1 and start BKOPS in a preventive manner. * Interrupt ongoing BKOPS before powering off the card. * How do we get BKOPS_STATUS value (periodically send ext_csd command)? * If using periodic bkops, also consider runtime_pm control. Signed-off-by: Jaehoon Chung Signed-off-by: Kyungmin Park Signed-off-by: Konstantin Dorfman Reviewed-by: Maya Erez Signed-off-by: Chris Ball --- drivers/mmc/core/core.c | 160 +++++++++++++++++++++++++++++++++++++++++++-- drivers/mmc/core/mmc.c | 11 ++++ drivers/mmc/core/mmc_ops.c | 26 ++++++-- include/linux/mmc/card.h | 8 +++ include/linux/mmc/core.h | 4 ++ include/linux/mmc/mmc.h | 19 ++++++ 6 files changed, 220 insertions(+), 8 deletions(-) (limited to 'drivers/mmc/core/mmc_ops.c') diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index af2c4d2fd69..044cd016320 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include @@ -41,6 +42,12 @@ #include "sd_ops.h" #include "sdio_ops.h" +/* + * Background operations can take a long time, depending on the housekeeping + * operations the card has to perform. + */ +#define MMC_BKOPS_MAX_TIMEOUT (4 * 60 * 1000) /* max time to wait in ms */ + static struct workqueue_struct *workqueue; static const unsigned freqs[] = { 400000, 300000, 200000, 100000 }; @@ -245,6 +252,70 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) host->ops->request(host, mrq); } +/** + * mmc_start_bkops - start BKOPS for supported cards + * @card: MMC card to start BKOPS + * @form_exception: A flag to indicate if this function was + * called due to an exception raised by the card + * + * Start background operations whenever requested. + * When the urgent BKOPS bit is set in a R1 command response + * then background operations should be started immediately. +*/ +void mmc_start_bkops(struct mmc_card *card, bool from_exception) +{ + int err; + int timeout; + bool use_busy_signal; + + BUG_ON(!card); + + if (!card->ext_csd.bkops_en || mmc_card_doing_bkops(card)) + return; + + err = mmc_read_bkops_status(card); + if (err) { + pr_err("%s: Failed to read bkops status: %d\n", + mmc_hostname(card->host), err); + return; + } + + if (!card->ext_csd.raw_bkops_status) + return; + + if (card->ext_csd.raw_bkops_status < EXT_CSD_BKOPS_LEVEL_2 && + from_exception) + return; + + mmc_claim_host(card->host); + if (card->ext_csd.raw_bkops_status >= EXT_CSD_BKOPS_LEVEL_2) { + timeout = MMC_BKOPS_MAX_TIMEOUT; + use_busy_signal = true; + } else { + timeout = 0; + use_busy_signal = false; + } + + err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_BKOPS_START, 1, timeout, use_busy_signal); + if (err) { + pr_warn("%s: Error %d starting bkops\n", + mmc_hostname(card->host), err); + goto out; + } + + /* + * For urgent bkops status (LEVEL_2 and more) + * bkops executed synchronously, otherwise + * the operation is in progress + */ + if (!use_busy_signal) + mmc_card_set_doing_bkops(card); +out: + mmc_release_host(card->host); +} +EXPORT_SYMBOL(mmc_start_bkops); + static void mmc_wait_done(struct mmc_request *mrq) { complete(&mrq->completion); @@ -354,6 +425,14 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host, if (host->areq) { mmc_wait_for_req_done(host, host->areq->mrq); err = host->areq->err_check(host->card, host->areq); + /* + * Check BKOPS urgency for each R1 response + */ + if (host->card && mmc_card_mmc(host->card) && + ((mmc_resp_type(host->areq->mrq->cmd) == MMC_RSP_R1) || + (mmc_resp_type(host->areq->mrq->cmd) == MMC_RSP_R1B)) && + (host->areq->mrq->cmd->resp[0] & R1_EXCEPTION_EVENT)) + mmc_start_bkops(host->card, true); } if (!err && areq) @@ -398,7 +477,7 @@ EXPORT_SYMBOL(mmc_wait_for_req); * @card: the MMC card associated with the HPI transfer * * Issued High Priority Interrupt, and check for card status - * util out-of prg-state. + * until out-of prg-state. */ int mmc_interrupt_hpi(struct mmc_card *card) { @@ -489,6 +568,64 @@ int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries EXPORT_SYMBOL(mmc_wait_for_cmd); +/** + * mmc_stop_bkops - stop ongoing BKOPS + * @card: MMC card to check BKOPS + * + * Send HPI command to stop ongoing background operations to + * allow rapid servicing of foreground operations, e.g. read/ + * writes. Wait until the card comes out of the programming state + * to avoid errors in servicing read/write requests. + */ +int mmc_stop_bkops(struct mmc_card *card) +{ + int err = 0; + + BUG_ON(!card); + err = mmc_interrupt_hpi(card); + + /* + * If err is EINVAL, we can't issue an HPI. + * It should complete the BKOPS. + */ + if (!err || (err == -EINVAL)) { + mmc_card_clr_doing_bkops(card); + err = 0; + } + + return err; +} +EXPORT_SYMBOL(mmc_stop_bkops); + +int mmc_read_bkops_status(struct mmc_card *card) +{ + int err; + u8 *ext_csd; + + /* + * In future work, we should consider storing the entire ext_csd. + */ + ext_csd = kmalloc(512, GFP_KERNEL); + if (!ext_csd) { + pr_err("%s: could not allocate buffer to receive the ext_csd.\n", + mmc_hostname(card->host)); + return -ENOMEM; + } + + mmc_claim_host(card->host); + err = mmc_send_ext_csd(card, ext_csd); + mmc_release_host(card->host); + if (err) + goto out; + + card->ext_csd.raw_bkops_status = ext_csd[EXT_CSD_BKOPS_STATUS]; + card->ext_csd.raw_exception_status = ext_csd[EXT_CSD_EXP_EVENTS_STATUS]; +out: + kfree(ext_csd); + return err; +} +EXPORT_SYMBOL(mmc_read_bkops_status); + /** * mmc_set_data_timeout - set the timeout for a data command * @data: data phase for command @@ -2333,9 +2470,14 @@ int mmc_suspend_host(struct mmc_host *host) mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { - - if (host->bus_ops->suspend) + if (host->bus_ops->suspend) { + if (mmc_card_doing_bkops(host->card)) { + err = mmc_stop_bkops(host->card); + if (err) + goto out; + } err = host->bus_ops->suspend(host); + } if (err == -ENOSYS || !host->bus_ops->resume) { /* @@ -2417,11 +2559,21 @@ int mmc_pm_notify(struct notifier_block *notify_block, struct mmc_host *host = container_of( notify_block, struct mmc_host, pm_notify); unsigned long flags; - + int err = 0; switch (mode) { case PM_HIBERNATION_PREPARE: case PM_SUSPEND_PREPARE: + if (host->card && mmc_card_mmc(host->card) && + mmc_card_doing_bkops(host->card)) { + err = mmc_stop_bkops(host->card); + if (err) { + pr_err("%s: didn't stop bkops\n", + mmc_hostname(host)); + return err; + } + mmc_card_clr_doing_bkops(host->card); + } spin_lock_irqsave(&host->lock, flags); host->rescan_disable = 1; diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 396b25891bb..7509de14aa7 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -463,6 +463,17 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) } if (card->ext_csd.rev >= 5) { + /* check whether the eMMC card supports BKOPS */ + if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { + card->ext_csd.bkops = 1; + card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; + card->ext_csd.raw_bkops_status = + ext_csd[EXT_CSD_BKOPS_STATUS]; + if (!card->ext_csd.bkops_en) + pr_info("%s: BKOPS_EN bit is not set\n", + mmc_hostname(card->host)); + } + /* check whether the eMMC card supports HPI */ if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { card->ext_csd.hpi = 1; diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 225371a2886..a0e172042e6 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -393,18 +393,19 @@ int mmc_spi_set_crc(struct mmc_host *host, int use_crc) } /** - * mmc_switch - modify EXT_CSD register + * __mmc_switch - modify EXT_CSD register * @card: the MMC card associated with the data transfer * @set: cmd set values * @index: EXT_CSD register index * @value: value to program into EXT_CSD register * @timeout_ms: timeout (ms) for operation performed by register write, * timeout of zero implies maximum possible timeout + * @use_busy_signal: use the busy signal as response type * * Modifies the EXT_CSD register for selected card. */ -int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, - unsigned int timeout_ms) +int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, + unsigned int timeout_ms, bool use_busy_signal) { int err; struct mmc_command cmd = {0}; @@ -418,13 +419,23 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, (index << 16) | (value << 8) | set; - cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; + cmd.flags = MMC_CMD_AC; + if (use_busy_signal) + cmd.flags |= MMC_RSP_SPI_R1B | MMC_RSP_R1B; + else + cmd.flags |= MMC_RSP_SPI_R1 | MMC_RSP_R1; + + cmd.cmd_timeout_ms = timeout_ms; err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); if (err) return err; + /* No need to check card status in case of unblocking command */ + if (!use_busy_signal) + return 0; + /* Must check status to be sure of no errors */ do { err = mmc_send_status(card, &status); @@ -449,6 +460,13 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, return 0; } +EXPORT_SYMBOL_GPL(__mmc_switch); + +int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, + unsigned int timeout_ms) +{ + return __mmc_switch(card, set, index, value, timeout_ms, true); +} EXPORT_SYMBOL_GPL(mmc_switch); int mmc_send_status(struct mmc_card *card, u32 *status) diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 4b27f9f503e..78cc3be8539 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -76,10 +76,13 @@ struct mmc_ext_csd { bool hpi_en; /* HPI enablebit */ bool hpi; /* HPI support bit */ unsigned int hpi_cmd; /* cmd used as HPI */ + bool bkops; /* background support bit */ + bool bkops_en; /* background enable bit */ unsigned int data_sector_size; /* 512 bytes or 4KB */ unsigned int data_tag_unit_size; /* DATA TAG UNIT size */ unsigned int boot_ro_lock; /* ro lock support */ bool boot_ro_lockable; + u8 raw_exception_status; /* 53 */ u8 raw_partition_support; /* 160 */ u8 raw_erased_mem_count; /* 181 */ u8 raw_ext_csd_structure; /* 194 */ @@ -93,6 +96,7 @@ struct mmc_ext_csd { u8 raw_sec_erase_mult; /* 230 */ u8 raw_sec_feature_support;/* 231 */ u8 raw_trim_mult; /* 232 */ + u8 raw_bkops_status; /* 246 */ u8 raw_sectors[4]; /* 212 - 4 bytes */ unsigned int feature_support; @@ -226,6 +230,7 @@ struct mmc_card { #define MMC_CARD_REMOVED (1<<7) /* card has been removed */ #define MMC_STATE_HIGHSPEED_200 (1<<8) /* card is in HS200 mode */ #define MMC_STATE_SLEEP (1<<9) /* card is in sleep state */ +#define MMC_STATE_DOING_BKOPS (1<<10) /* card is doing BKOPS */ unsigned int quirks; /* card quirks */ #define MMC_QUIRK_LENIENT_FN0 (1<<0) /* allow SDIO FN0 writes outside of the VS CCCR range */ #define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1) /* use func->cur_blksize */ @@ -393,6 +398,7 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data) #define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC) #define mmc_card_removed(c) ((c) && ((c)->state & MMC_CARD_REMOVED)) #define mmc_card_is_sleep(c) ((c)->state & MMC_STATE_SLEEP) +#define mmc_card_doing_bkops(c) ((c)->state & MMC_STATE_DOING_BKOPS) #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT) #define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY) @@ -405,7 +411,9 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data) #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC) #define mmc_card_set_removed(c) ((c)->state |= MMC_CARD_REMOVED) #define mmc_card_set_sleep(c) ((c)->state |= MMC_STATE_SLEEP) +#define mmc_card_set_doing_bkops(c) ((c)->state |= MMC_STATE_DOING_BKOPS) +#define mmc_card_clr_doing_bkops(c) ((c)->state &= ~MMC_STATE_DOING_BKOPS) #define mmc_card_clr_sleep(c) ((c)->state &= ~MMC_STATE_SLEEP) /* * Quirk add/remove for MMC products. diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 1b431c728b9..9b9cdafc773 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -134,6 +134,8 @@ struct mmc_host; struct mmc_card; struct mmc_async_req; +extern int mmc_stop_bkops(struct mmc_card *); +extern int mmc_read_bkops_status(struct mmc_card *); extern struct mmc_async_req *mmc_start_req(struct mmc_host *, struct mmc_async_req *, int *); extern int mmc_interrupt_hpi(struct mmc_card *); @@ -142,6 +144,8 @@ extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int); extern int mmc_app_cmd(struct mmc_host *, struct mmc_card *); extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *, struct mmc_command *, int); +extern void mmc_start_bkops(struct mmc_card *card, bool from_exception); +extern int __mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int, bool); extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int); #define MMC_ERASE_ARG 0x00000000 diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index d425cab144d..01e4b394029 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -139,6 +139,7 @@ static inline bool mmc_op_multi(u32 opcode) #define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */ #define R1_READY_FOR_DATA (1 << 8) /* sx, a */ #define R1_SWITCH_ERROR (1 << 7) /* sx, c */ +#define R1_EXCEPTION_EVENT (1 << 6) /* sx, a */ #define R1_APP_CMD (1 << 5) /* sr, c */ #define R1_STATE_IDLE 0 @@ -274,12 +275,15 @@ struct _mmc_csd { #define EXT_CSD_FLUSH_CACHE 32 /* W */ #define EXT_CSD_CACHE_CTRL 33 /* R/W */ #define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */ +#define EXT_CSD_EXP_EVENTS_STATUS 54 /* RO */ #define EXT_CSD_DATA_SECTOR_SIZE 61 /* R */ #define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ #define EXT_CSD_PARTITION_SUPPORT 160 /* RO */ #define EXT_CSD_HPI_MGMT 161 /* R/W */ #define EXT_CSD_RST_N_FUNCTION 162 /* R/W */ +#define EXT_CSD_BKOPS_EN 163 /* R/W */ +#define EXT_CSD_BKOPS_START 164 /* W */ #define EXT_CSD_SANITIZE_START 165 /* W */ #define EXT_CSD_WR_REL_PARAM 166 /* RO */ #define EXT_CSD_BOOT_WP 173 /* R/W */ @@ -313,11 +317,13 @@ struct _mmc_csd { #define EXT_CSD_PWR_CL_200_360 237 /* RO */ #define EXT_CSD_PWR_CL_DDR_52_195 238 /* RO */ #define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */ +#define EXT_CSD_BKOPS_STATUS 246 /* RO */ #define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */ #define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */ #define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */ #define EXT_CSD_TAG_UNIT_SIZE 498 /* RO */ #define EXT_CSD_DATA_TAG_SUPPORT 499 /* RO */ +#define EXT_CSD_BKOPS_SUPPORT 502 /* RO */ #define EXT_CSD_HPI_FEATURES 503 /* RO */ /* @@ -377,6 +383,19 @@ struct _mmc_csd { #define EXT_CSD_PWR_CL_4BIT_MASK 0x0F /* 8 bit PWR CLS */ #define EXT_CSD_PWR_CL_8BIT_SHIFT 4 #define EXT_CSD_PWR_CL_4BIT_SHIFT 0 +/* + * EXCEPTION_EVENT_STATUS field + */ +#define EXT_CSD_URGENT_BKOPS BIT(0) +#define EXT_CSD_DYNCAP_NEEDED BIT(1) +#define EXT_CSD_SYSPOOL_EXHAUSTED BIT(2) +#define EXT_CSD_PACKED_FAILURE BIT(3) + +/* + * BKOPS status level + */ +#define EXT_CSD_BKOPS_LEVEL_2 0x2 + /* * MMC_SWITCH access modes */ -- cgit v1.2.3-70-g09d2