From patchwork Tue Jul 17 02:44:06 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jaehoon Chung X-Patchwork-Id: 1202801 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 7CD0F3FC33 for ; Tue, 17 Jul 2012 02:44:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754380Ab2GQCo0 (ORCPT ); Mon, 16 Jul 2012 22:44:26 -0400 Received: from mailout1.samsung.com ([203.254.224.24]:40663 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754289Ab2GQCoZ (ORCPT ); Mon, 16 Jul 2012 22:44:25 -0400 Received: from epcpsbgm1.samsung.com (mailout1.samsung.com [203.254.224.24]) by mailout1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0M7A0087RA9ZNJL0@mailout1.samsung.com> for linux-mmc@vger.kernel.org; Tue, 17 Jul 2012 11:44:24 +0900 (KST) X-AuditID: cbfee61a-b7f616d000004b7e-e8-5004d187ba2e Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id D7.8F.19326.781D4005; Tue, 17 Jul 2012 11:44:23 +0900 (KST) Received: from [10.90.51.55] by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0M7A00J3DA9YXT60@mmp1.samsung.com> for linux-mmc@vger.kernel.org; Tue, 17 Jul 2012 11:44:23 +0900 (KST) Message-id: <5004D176.7090306@samsung.com> Date: Tue, 17 Jul 2012 11:44:06 +0900 From: Jaehoon Chung User-Agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120615 Thunderbird/13.0.1 MIME-version: 1.0 To: linux-mmc Cc: Chris Ball , Kyungmin Park , Hanumath Prasad , Per FORLIN , Sebastian Rasmussen , "Dong, Chuanxiao" , "svenkatr@ti.com" , Saugata Das , Konstantin Dorfman , Adrian Hunter , Maya Erez , Ulf Hansson Subject: [PATCH v10] mmc: support BKOPS feature for eMMC Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprCLMWRmVeSWpSXmKPExsVy+t9jAd32iywBBnM+WVkc+d/P6MDo8XmT XABjFJdNSmpOZllqkb5dAlfG6YYVrAV7pjJW9H9/wdLAuLeyi5GTQ0LARGLZigZWCFtM4sK9 9WxdjFwcQgKLGCVWXelggnDamSR+zFzNCFLFK6Al0XCohR3EZhFQlTh1fSIbiM0moCOx/dtx JhBbVCBM4tXdn2wQ9YISPybfYwGxRQQ0JTq3rwTbwCzwg1li1fmzYIOEBSwkuu53ghUxAw3a 3zqNDcKWl9i85i3zBEa+WUhmzUJSNgtJ2QJG5lWMoqkFyQXFSem5hnrFibnFpXnpesn5uZsY wWH1TGoH48oGi0OMAhyMSjy8+y+wBAixJpYVV+YeYpTgYFYS4RU5ChTiTUmsrEotyo8vKs1J LT7EKM3BoiTOa+z91V9IID2xJDU7NbUgtQgmy8TBKdXA2D51V6v2q0f3K488OXLf2UxiYd/S hdPvdfv7cc2rMnn+mPFg8uy38qJp20QvTmC7fjYmKLVu2km7aaYZj2dwviqoSVz+Y4bLyZJj lgxPzBqD5zj+3rKnsmrOLG17jZnzH04tm1fZdG5lqdNzkxLvkHO1/ZtS9j/5a5k79Yps+arH EwNXO1h+klViKc5INNRiLipOBAAT1tdSJwIAAA== X-TM-AS-MML: No Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Enable eMMC background operations (BKOPS) feature. If URGENT_BKOPS is set after a response, note that BKOPS are required. After all I/O requests are finished, run BKOPS if required. Should read/write operations be requested during BKOPS, first issue HPI to interrupt the ongoing BKOPS and then service the request. If BKOPS-STATUS is upper than LEVEL2, need to check until clear the BKOPS-STATUS vaule. If you want to enable this feature, set MMC_CAP2_BKOPS. I tested with dw-mmc and sdhci controller. When repeating the writing 1GB data, at a certain time, performance is decreased. At that time, card is also triggered 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 get BKOPS_STATUS value.(periodically send ext_csd command?) * If use periodic bkops, also consider runtime_pm control. Signed-off-by: Jaehoon Chung Signed-off-by: Kyungmin Park Signed-off-by: Konstantin Dorfman Signed-off-by: Maya Erez --- Changelog v10: - Based on latest mmc-next - Only control the level-2/3. : If triggered upper than level2, immediately start bkops. - Revmoe the BKOPS_CAP2_INIT_BKOPS (move into mmc-util) - change use_busy_signal instead of waiting_for_prog_done for __mmc_switch Changelog V9: - Rebased on patch-v7. - Added Konstantin and Maya's patch : mmc:core: Define synchronous BKOPS timeout : mmc:core: eMMC4.5 BKOPS fixes - Removed periodic bkops : This feature will do in future work - Add __mmc_switch() for waiting_for_prod_done. Changelog V8: - Remove host->lock spin lock reviewed by Adrian - Support periodic start bkops - when bkops_status is level-3, if timeout is set to 0, send hpi. - Move the start-bkops point Changelog V7: - Use HPI command when issued URGENT_BKOPS - Recheck until clearing the bkops-status bit. Changelog V6: - Add the flag of check-bkops-status. (For fixing async_req problem) - Add the capability for MMC_CAP2_INIT_BKOPS. (When unset the bkops_en bit in ext_csd register) - modify the wrong condition. Changelog V5: - Rebase based on the latest mmc-next. - modify codes based-on Chris's comment Changelog V4: - Add mmc_read_bkops_status - When URGENT_BKOPS(level2-3), didn't use HPI command. - In mmc_switch(), use R1B/R1 according to level. Changelog V3: - move the bkops setting's location in mmc_blk_issue_rw_rq - modify condition checking - bkops_en is assigned ext_csd[EXT_CSD_BKOPS_EN] instead of "1" - remove the unused code - change pr_debug instead of pr_warn in mmc_send_hpi_cmd - Add the Future consideration suggested by Per Changelog V2: - Use EXCEPTION_STATUS instead of URGENT_BKOPS - Add function to check Exception_status(for eMMC4.5) --- drivers/mmc/core/core.c | 161 +++++++++++++++++++++++++++++++++++++++++++- drivers/mmc/core/mmc.c | 11 +++ drivers/mmc/core/mmc_ops.c | 27 ++++++- include/linux/mmc/card.h | 16 +++++ include/linux/mmc/core.h | 5 ++ include/linux/mmc/host.h | 2 +- include/linux/mmc/mmc.h | 19 +++++- 7 files changed, 233 insertions(+), 8 deletions(-) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 9503cab..52bdd33 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -41,6 +41,12 @@ #include "sd_ops.h" #include "sdio_ops.h" +/* + * The Background operation can take a long time, depends on the house keeping + * 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 +251,68 @@ 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 + * + * 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) +{ + int err; + int timeout; + u8 use_busy_signal; + + BUG_ON(!card); + if (!card->ext_csd.bkops_en || !(card->host->caps2 & MMC_CAP2_BKOPS)) + return; + + if (mmc_is_exception_event(card, EXT_CSD_URGENT_BKOPS)) + if (card->ext_csd.raw_bkops_status) + mmc_card_set_need_bkops(card); + + /* + * If card is already doing bkops or need for + * bkops flag is not set, then do nothing just + * return + */ + if (mmc_card_doing_bkops(card) || !mmc_card_need_bkops(card)) + 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 = 0; + } else { + timeout = 0; + use_busy_signal = 1; + } + + 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); + mmc_card_clr_need_bkops(card); + goto out; + } + + mmc_card_clr_need_bkops(card); + + /* + * For urgent bkops status (LEVEL_2 and more) + * bkops executed synchronously, otherwise + * the operation is in progress + */ + if (card->ext_csd.raw_bkops_status < EXT_CSD_BKOPS_LEVEL_2) + 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 +422,20 @@ 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 from 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_EXP_EVENT)) + mmc_start_bkops(host->card); + /* + * If areq exsit, + * we stop the bkops for foreground operation + */ + if (areq && mmc_card_doing_bkops(host->card)) + err = mmc_stop_bkops(host->card); } if (!err && areq) @@ -488,6 +570,72 @@ 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, it's status that can't issue HPI. + * Maybe it should be completed 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[512]; + + mmc_claim_host(card->host); + err = mmc_send_ext_csd(card, ext_csd); + mmc_release_host(card->host); + if (err) + return err; + + 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]; + + return 0; +} +EXPORT_SYMBOL(mmc_read_bkops_status); + +int mmc_is_exception_event(struct mmc_card *card, unsigned int value) +{ + int err; + + err = mmc_read_bkops_status(card); + if (err) { + pr_err("%s: Didn't read bkops status : %d\n", + mmc_hostname(card->host), err); + return 0; + } + + /* In eMMC 4.41, R1_EXCEPTION_EVENT is URGENT_BKOPS */ + if (card->ext_csd.rev == 5) + return 1; + + return (card->ext_csd.raw_exception_status & value) ? 1 : 0; +} +EXPORT_SYMBOL(mmc_is_exception_event); + /** * mmc_set_data_timeout - set the timeout for a data command * @data: data phase for command @@ -2328,8 +2476,14 @@ 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) { /* @@ -2416,6 +2570,11 @@ int mmc_pm_notify(struct notifier_block *notify_block, switch (mode) { case PM_HIBERNATION_PREPARE: case PM_SUSPEND_PREPARE: + if (host->card && mmc_card_mmc(host->card) && + mmc_card_doing_bkops(host->card)) { + mmc_interrupt_hpi(host->card); + 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 7150f02..6fbffb6 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 support 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: Didn't set BKOPS_EN bit!\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 4ad994a..baf90e0 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -368,18 +368,19 @@ 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 + * @wait_for_prod_done: is waiting for program done * * 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, u8 use_busy_signal) { int err; struct mmc_command cmd = {0}; @@ -393,13 +394,24 @@ 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 BKOPS LEVEL2 switch*/ + if ((index == EXT_CSD_BKOPS_START) && + (card->ext_csd.raw_bkops_status < EXT_CSD_BKOPS_LEVEL_2)) + return 0; + /* Must check status to be sure of no errors */ do { err = mmc_send_status(card, &status); @@ -424,6 +436,13 @@ 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, 1); +} 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 cdfbc3c..b9e11aa 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -79,10 +79,13 @@ 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 */ @@ -96,6 +99,7 @@ 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; @@ -229,6 +233,9 @@ 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_NEED_BKOPS (1<<10) /* card need to do BKOPS */ +#define MMC_STATE_DOING_BKOPS (1<<11) /* card is doing BKOPS */ +#define MMC_STATE_CHECK_BKOPS (1<<12) /* card need to check 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 */ @@ -400,6 +407,9 @@ 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_need_bkops(c) ((c)->state & MMC_STATE_NEED_BKOPS) +#define mmc_card_doing_bkops(c) ((c)->state & MMC_STATE_DOING_BKOPS) +#define mmc_card_check_bkops(c) ((c)->state & MMC_STATE_CHECK_BKOPS) #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT) #define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY) @@ -412,7 +422,13 @@ 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_need_bkops(c) ((c)->state |= MMC_STATE_NEED_BKOPS) +#define mmc_card_set_doing_bkops(c) ((c)->state |= MMC_STATE_DOING_BKOPS) +#define mmc_card_set_check_bkops(c) ((c)->state |= MMC_STATE_CHECK_BKOPS) +#define mmc_card_clr_need_bkops(c) ((c)->state &= ~MMC_STATE_NEED_BKOPS) +#define mmc_card_clr_doing_bkops(c) ((c)->state &= ~MMC_STATE_DOING_BKOPS) +#define mmc_card_clr_check_bkops(c) ((c)->state &= ~MMC_STATE_CHECK_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 d787037..fa5641d 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -137,6 +137,9 @@ 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 int mmc_is_exception_event(struct mmc_card *, unsigned int); extern struct mmc_async_req *mmc_start_req(struct mmc_host *, struct mmc_async_req *, int *); extern int mmc_interrupt_hpi(struct mmc_card *); @@ -145,6 +148,8 @@ 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); +extern int __mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int, u8); extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int); extern int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd); diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 79d8921..35b7ce8 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -273,7 +273,7 @@ struct mmc_host { #define MMC_CAP2_PACKED_WR (1 << 21) /* Allow packed write */ #define MMC_CAP2_PACKED_CMD (MMC_CAP2_PACKED_RD | \ MMC_CAP2_PACKED_WR) /* Allow packed commands */ - +#define MMC_CAP2_BKOPS (1 << 22) /* BKOPS supported */ mmc_pm_flag_t pm_caps; /* supported pm features */ unsigned int power_notify_type; #define MMC_HOST_PW_NOTIFY_NONE 0 diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 254901a..e7396b4 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -285,6 +285,8 @@ struct _mmc_csd { #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 */ @@ -318,6 +320,7 @@ 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 */ @@ -325,6 +328,7 @@ struct _mmc_csd { #define EXT_CSD_DATA_TAG_SUPPORT 499 /* RO */ #define EXT_CSD_MAX_PACKED_WRITES 500 /* RO */ #define EXT_CSD_MAX_PACKED_READS 501 /* RO */ +#define EXT_CSD_BKOPS_SUPPORT 502 /* RO */ #define EXT_CSD_HPI_FEATURES 503 /* RO */ /* @@ -387,12 +391,23 @@ struct _mmc_csd { #define EXT_CSD_PACKED_EVENT_EN (1 << 3) -#define EXT_CSD_PACKED_FAILURE (1 << 3) - #define EXT_CSD_PACKED_GENERIC_ERROR (1 << 0) #define EXT_CSD_PACKED_INDEXED_ERROR (1 << 1) /* + * EXCEPTION_EVENT_STATUS field (eMMC4.5) + */ +#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 */