diff options
| -rw-r--r-- | drivers/mmc/card/block.c | 46 | ||||
| -rw-r--r-- | drivers/mmc/card/queue.c | 3 |
2 files changed, 46 insertions, 3 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 03f96e975fe..d545f79f600 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -280,6 +280,42 @@ out: return err ? 0 : 1; } +static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq, + struct request *req) +{ + struct mmc_blk_data *md = mq->data; + struct mmc_card *card = md->queue.card; + unsigned int from, nr, arg; + int err = 0; + + mmc_claim_host(card->host); + + if (!mmc_can_secure_erase_trim(card)) { + err = -EOPNOTSUPP; + goto out; + } + + from = blk_rq_pos(req); + nr = blk_rq_sectors(req); + + if (mmc_can_trim(card) && !mmc_erase_group_aligned(card, from, nr)) + arg = MMC_SECURE_TRIM1_ARG; + else + arg = MMC_SECURE_ERASE_ARG; + + err = mmc_erase(card, from, nr, arg); + if (!err && arg == MMC_SECURE_TRIM1_ARG) + err = mmc_erase(card, from, nr, MMC_SECURE_TRIM2_ARG); +out: + spin_lock_irq(&md->lock); + __blk_end_request(req, err, blk_rq_bytes(req)); + spin_unlock_irq(&md->lock); + + mmc_release_host(card->host); + + return err ? 0 : 1; +} + static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req) { struct mmc_blk_data *md = mq->data; @@ -510,10 +546,14 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req) static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) { - if (req->cmd_flags & REQ_DISCARD) - return mmc_blk_issue_discard_rq(mq, req); - else + if (req->cmd_flags & REQ_DISCARD) { + if (req->cmd_flags & REQ_SECURE) + return mmc_blk_issue_secdiscard_rq(mq, req); + else + return mmc_blk_issue_discard_rq(mq, req); + } else { return mmc_blk_issue_rw_rq(mq, req); + } } static inline int mmc_blk_readonly(struct mmc_card *card) diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 3b15884e435..e876678176b 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -141,6 +141,9 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock mq->queue->limits.discard_alignment = card->erase_size << 9; } + if (mmc_can_secure_erase_trim(card)) + queue_flag_set_unlocked(QUEUE_FLAG_SECDISCARD, + mq->queue); } #ifdef CONFIG_MMC_BLOCK_BOUNCE |