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mmc: block: add a block request prepare function

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Break out code from mmc_blk_issue_rw_rq to create a block request prepare
function. This doesn't change any functionallity. This helps when handling
more than one active block request.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Tested-by: Sourav Poddar <sourav.poddar@ti.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Per Forlin 2011-07-01 18:55:29 +02:00 committed by Chris Ball
parent 97868a2bdf
commit 54d49d7762
1 changed files with 112 additions and 102 deletions
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30
drivers/mmc/card/block.c
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@ -812,12 +812,15 @@ static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq,
R1_CC_ERROR | /* Card controller error */ \
R1_ERROR) /* General/unknown error */
static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
struct mmc_card *card,
int disable_multi,
struct mmc_queue *mq)
{
u32 readcmd, writecmd;
struct mmc_blk_request *brq = &mqrq->brq;
struct request *req = mqrq->req;
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
struct mmc_blk_request *brq = &mq->mqrq_cur->brq;
int ret = 1, disable_multi = 0, retry = 0;
/*
* Reliable writes are used to implement Forced Unit Access and
@ -828,9 +831,6 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
(rq_data_dir(req) == WRITE) &&
(md->flags & MMC_BLK_REL_WR);
do {
u32 readcmd, writecmd;
memset(brq, 0, sizeof(struct mmc_blk_request));
brq->mrq.cmd = &brq->cmd;
brq->mrq.data = &brq->data;
@ -917,8 +917,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
mmc_set_data_timeout(&brq->data, card);
brq->data.sg = mq->mqrq_cur->sg;
brq->data.sg_len = mmc_queue_map_sg(mq, mq->mqrq_cur);
brq->data.sg = mqrq->sg;
brq->data.sg_len = mmc_queue_map_sg(mq, mqrq);
/*
* Adjust the sg list so it is the same size as the
@ -939,8 +939,18 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
brq->data.sg_len = i;
}
mmc_queue_bounce_pre(mq->mqrq_cur);
mmc_queue_bounce_pre(mqrq);
}
static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req)
{
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
struct mmc_blk_request *brq = &mq->mqrq_cur->brq;
int ret = 1, disable_multi = 0, retry = 0;
do {
mmc_blk_rw_rq_prep(mq->mqrq_cur, card, disable_multi, mq);
mmc_wait_for_req(card->host, &brq->mrq);
mmc_queue_bounce_post(mq->mqrq_cur);