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| author | Adrian Hunter <adrian.hunter@intel.com> | 2017-09-22 15:36:56 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-10-30 11:45:52 +0100 |
| commit | 93482b3d70c2120aadb0f1d1281a59199866e70a (patch) | |
| tree | 7ffb4b0dfa3163b1999413944c46ec65bca6f3ca /drivers/mmc/core | |
| parent | d3377c012f4d7a0a822e289f1effba997da3e295 (diff) | |
| download | linux-93482b3d70c2120aadb0f1d1281a59199866e70a.tar.bz2 | |
mmc: block: Prepare CQE data
Enhance mmc_blk_data_prep() to support CQE requests. That means adding
some things that for non-CQE requests would be encoded into the command
arguments - such as the block address, reliable-write flag, and data tag
flag. Also the request tag is needed to provide the command queue task id,
and a comment is added to explain the future possibility of defining a
priority.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/block.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index bb5f70ec8015..ea80ff4cd7f9 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -1595,6 +1595,7 @@ static void mmc_blk_data_prep(struct mmc_queue *mq, struct mmc_queue_req *mqrq, memset(brq, 0, sizeof(struct mmc_blk_request)); brq->mrq.data = &brq->data; + brq->mrq.tag = req->tag; brq->stop.opcode = MMC_STOP_TRANSMISSION; brq->stop.arg = 0; @@ -1609,6 +1610,14 @@ static void mmc_blk_data_prep(struct mmc_queue *mq, struct mmc_queue_req *mqrq, brq->data.blksz = 512; brq->data.blocks = blk_rq_sectors(req); + brq->data.blk_addr = blk_rq_pos(req); + + /* + * The command queue supports 2 priorities: "high" (1) and "simple" (0). + * The eMMC will give "high" priority tasks priority over "simple" + * priority tasks. Here we always set "simple" priority by not setting + * MMC_DATA_PRIO. + */ /* * The block layer doesn't support all sector count @@ -1638,8 +1647,10 @@ static void mmc_blk_data_prep(struct mmc_queue *mq, struct mmc_queue_req *mqrq, brq->data.blocks); } - if (do_rel_wr) + if (do_rel_wr) { mmc_apply_rel_rw(brq, card, req); + brq->data.flags |= MMC_DATA_REL_WR; + } /* * Data tag is used only during writing meta data to speed @@ -1651,6 +1662,9 @@ static void mmc_blk_data_prep(struct mmc_queue *mq, struct mmc_queue_req *mqrq, ((brq->data.blocks * brq->data.blksz) >= card->ext_csd.data_tag_unit_size); + if (do_data_tag) + brq->data.flags |= MMC_DATA_DAT_TAG; + mmc_set_data_timeout(&brq->data, card); brq->data.sg = mqrq->sg; |