diff options
Diffstat (limited to 'drivers/mmc/core/block.c')
| -rw-r--r-- | drivers/mmc/core/block.c | 111 |
1 files changed, 85 insertions, 26 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index f4dab1dfd2ab..9fb2bd529156 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -564,8 +564,10 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, { struct mmc_blk_ioc_data *idata; struct mmc_blk_data *md; + struct mmc_queue *mq; struct mmc_card *card; int err = 0, ioc_err = 0; + struct request *req; /* * The caller must have CAP_SYS_RAWIO, and must be calling this on the @@ -591,17 +593,18 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, goto cmd_done; } - mmc_get_card(card); - - ioc_err = __mmc_blk_ioctl_cmd(card, md, idata); - - /* Always switch back to main area after RPMB access */ - if (md->area_type & MMC_BLK_DATA_AREA_RPMB) - mmc_blk_part_switch(card, dev_get_drvdata(&card->dev)); - - mmc_put_card(card); - + /* + * Dispatch the ioctl() into the block request queue. + */ + mq = &md->queue; + req = blk_get_request(mq->queue, + idata->ic.write_flag ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, + __GFP_RECLAIM); + req_to_mmc_queue_req(req)->idata = idata; + blk_execute_rq(mq->queue, NULL, req, 0); + ioc_err = req_to_mmc_queue_req(req)->ioc_result; err = mmc_blk_ioctl_copy_to_user(ic_ptr, idata); + blk_put_request(req); cmd_done: mmc_blk_put(md); @@ -611,6 +614,31 @@ cmd_err: return ioc_err ? ioc_err : err; } +/* + * The ioctl commands come back from the block layer after it queued it and + * processed it with all other requests and then they get issued in this + * function. + */ +static void mmc_blk_ioctl_cmd_issue(struct mmc_queue *mq, struct request *req) +{ + struct mmc_queue_req *mq_rq; + struct mmc_blk_ioc_data *idata; + struct mmc_card *card = mq->card; + struct mmc_blk_data *md = mq->blkdata; + int ioc_err; + + mq_rq = req_to_mmc_queue_req(req); + idata = mq_rq->idata; + ioc_err = __mmc_blk_ioctl_cmd(card, md, idata); + mq_rq->ioc_result = ioc_err; + + /* Always switch back to main area after RPMB access */ + if (md->area_type & MMC_BLK_DATA_AREA_RPMB) + mmc_blk_part_switch(card, dev_get_drvdata(&card->dev)); + + blk_end_request_all(req, ioc_err); +} + static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, struct mmc_ioc_multi_cmd __user *user) { @@ -1854,23 +1882,54 @@ void mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) goto out; } - if (req && req_op(req) == REQ_OP_DISCARD) { - /* complete ongoing async transfer before issuing discard */ - if (mq->qcnt) - mmc_blk_issue_rw_rq(mq, NULL); - mmc_blk_issue_discard_rq(mq, req); - } else if (req && req_op(req) == REQ_OP_SECURE_ERASE) { - /* complete ongoing async transfer before issuing secure erase*/ - if (mq->qcnt) - mmc_blk_issue_rw_rq(mq, NULL); - mmc_blk_issue_secdiscard_rq(mq, req); - } else if (req && req_op(req) == REQ_OP_FLUSH) { - /* complete ongoing async transfer before issuing flush */ - if (mq->qcnt) - mmc_blk_issue_rw_rq(mq, NULL); - mmc_blk_issue_flush(mq, req); + if (req) { + switch (req_op(req)) { + case REQ_OP_DRV_IN: + case REQ_OP_DRV_OUT: + /* + * Complete ongoing async transfer before issuing + * ioctl()s + */ + if (mq->qcnt) + mmc_blk_issue_rw_rq(mq, NULL); + mmc_blk_ioctl_cmd_issue(mq, req); + break; + case REQ_OP_DISCARD: + /* + * Complete ongoing async transfer before issuing + * discard. + */ + if (mq->qcnt) + mmc_blk_issue_rw_rq(mq, NULL); + mmc_blk_issue_discard_rq(mq, req); + break; + case REQ_OP_SECURE_ERASE: + /* + * Complete ongoing async transfer before issuing + * secure erase. + */ + if (mq->qcnt) + mmc_blk_issue_rw_rq(mq, NULL); + mmc_blk_issue_secdiscard_rq(mq, req); + break; + case REQ_OP_FLUSH: + /* + * Complete ongoing async transfer before issuing + * flush. + */ + if (mq->qcnt) + mmc_blk_issue_rw_rq(mq, NULL); + mmc_blk_issue_flush(mq, req); + break; + default: + /* Normal request, just issue it */ + mmc_blk_issue_rw_rq(mq, req); + card->host->context_info.is_waiting_last_req = false; + break; + }; } else { - mmc_blk_issue_rw_rq(mq, req); + /* No request, flushing the pipeline with NULL */ + mmc_blk_issue_rw_rq(mq, NULL); card->host->context_info.is_waiting_last_req = false; } |