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path: root/drivers/mmc
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Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/core/block.c111
-rw-r--r--drivers/mmc/core/queue.h3
2 files changed, 88 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;
}
diff --git a/drivers/mmc/core/queue.h b/drivers/mmc/core/queue.h
index dae31bc0c2d3..005ece9ac7cb 100644
--- a/drivers/mmc/core/queue.h
+++ b/drivers/mmc/core/queue.h
@@ -22,6 +22,7 @@ static inline bool mmc_req_is_special(struct request *req)
struct task_struct;
struct mmc_blk_data;
+struct mmc_blk_ioc_data;
struct mmc_blk_request {
struct mmc_request mrq;
@@ -40,6 +41,8 @@ struct mmc_queue_req {
struct scatterlist *bounce_sg;
unsigned int bounce_sg_len;
struct mmc_async_req areq;
+ int ioc_result;
+ struct mmc_blk_ioc_data *idata;
};
struct mmc_queue {