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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-12 20:51:57 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-12 20:51:57 +0200 |
commit | 46b5e34029fef7a042f3ff16e319e737257e5c7b (patch) | |
tree | c2e90b7a6d7c39c3a35eed1dfd0fd19077467c93 /drivers/mmc/card | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog (diff) | |
parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinn... (diff) | |
download | linux-46b5e34029fef7a042f3ff16e319e737257e5c7b.tar.xz linux-46b5e34029fef7a042f3ff16e319e737257e5c7b.zip |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (24 commits)
MMC: Use timeout values from CSR
MMC: CSD and CID timeout values
sdhci: 'scratch' may be used uninitialized
mmc: explicitly mention SDIO support in Kconfig
mmc: remove redundant "depends on"
Fix comment in include/linux/mmc/host.h
sdio: high-speed support
mmc_block: hard code 512 byte block size
sdhci: force high speed capability on some controllers
mmc_block: filter out PC requests
mmc_block: indicate strict ordering
mmc_block: inform block layer about sector count restriction
sdio: give sdio irq thread a host specific name
sdio: make sleep on error interruptable
sdhci: reduce card detection delay
sdhci: let the controller wait for busy state to end
atmel-mci: Add missing flush_dcache_page() in PIO transfer code
atmel-mci: Don't overwrite error bits when NOTBUSY is set
atmel-mci: Add experimental DMA support
atmel-mci: support multiple mmc slots
...
Diffstat (limited to 'drivers/mmc/card')
-rw-r--r-- | drivers/mmc/card/Kconfig | 3 | ||||
-rw-r--r-- | drivers/mmc/card/block.c | 46 | ||||
-rw-r--r-- | drivers/mmc/card/queue.c | 23 |
3 files changed, 23 insertions, 49 deletions
diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig index dd0f398ee2f5..3f2a912659af 100644 --- a/drivers/mmc/card/Kconfig +++ b/drivers/mmc/card/Kconfig @@ -2,7 +2,7 @@ # MMC/SD card drivers # -comment "MMC/SD Card Drivers" +comment "MMC/SD/SDIO Card Drivers" config MMC_BLOCK tristate "MMC block device driver" @@ -34,7 +34,6 @@ config MMC_BLOCK_BOUNCE config SDIO_UART tristate "SDIO UART/GPS class support" - depends on MMC help SDIO function driver for SDIO cards that implements the UART class, as well as the GPS class which appears like a UART. diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index efacee0404a0..24c97d3d16bb 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -58,7 +58,6 @@ struct mmc_blk_data { struct mmc_queue queue; unsigned int usage; - unsigned int block_bits; unsigned int read_only; }; @@ -216,8 +215,7 @@ static int mmc_blk_issue_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; - int ret = 1, data_size, i; - struct scatterlist *sg; + int ret = 1; mmc_claim_host(card->host); @@ -233,13 +231,11 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) if (!mmc_card_blockaddr(card)) brq.cmd.arg <<= 9; brq.cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; - brq.data.blksz = 1 << md->block_bits; + brq.data.blksz = 512; brq.stop.opcode = MMC_STOP_TRANSMISSION; brq.stop.arg = 0; brq.stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; - brq.data.blocks = req->nr_sectors >> (md->block_bits - 9); - if (brq.data.blocks > card->host->max_blk_count) - brq.data.blocks = card->host->max_blk_count; + brq.data.blocks = req->nr_sectors; if (brq.data.blocks > 1) { /* SPI multiblock writes terminate using a special @@ -271,24 +267,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) mmc_queue_bounce_pre(mq); - /* - * Adjust the sg list so it is the same size as the - * request. - */ - if (brq.data.blocks != - (req->nr_sectors >> (md->block_bits - 9))) { - data_size = brq.data.blocks * brq.data.blksz; - for_each_sg(brq.data.sg, sg, brq.data.sg_len, i) { - data_size -= sg->length; - if (data_size <= 0) { - sg->length += data_size; - i++; - break; - } - } - brq.data.sg_len = i; - } - mmc_wait_for_req(card->host, &brq.mrq); mmc_queue_bounce_post(mq); @@ -373,16 +351,11 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) if (rq_data_dir(req) != READ) { if (mmc_card_sd(card)) { u32 blocks; - unsigned int bytes; blocks = mmc_sd_num_wr_blocks(card); if (blocks != (u32)-1) { - if (card->csd.write_partial) - bytes = blocks << md->block_bits; - else - bytes = blocks << 9; spin_lock_irq(&md->lock); - ret = __blk_end_request(req, 0, bytes); + ret = __blk_end_request(req, 0, blocks << 9); spin_unlock_irq(&md->lock); } } else { @@ -432,13 +405,6 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card) */ md->read_only = mmc_blk_readonly(card); - /* - * Both SD and MMC specifications state (although a bit - * unclearly in the MMC case) that a block size of 512 - * bytes must always be supported by the card. - */ - md->block_bits = 9; - md->disk = alloc_disk(1 << MMC_SHIFT); if (md->disk == NULL) { ret = -ENOMEM; @@ -476,7 +442,7 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card) sprintf(md->disk->disk_name, "mmcblk%d", devidx); - blk_queue_hardsect_size(md->queue.queue, 1 << md->block_bits); + blk_queue_hardsect_size(md->queue.queue, 512); if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) { /* @@ -514,7 +480,7 @@ mmc_blk_set_blksize(struct mmc_blk_data *md, struct mmc_card *card) mmc_claim_host(card->host); cmd.opcode = MMC_SET_BLOCKLEN; - cmd.arg = 1 << md->block_bits; + cmd.arg = 512; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; err = mmc_wait_for_cmd(card->host, &cmd, 5); mmc_release_host(card->host); diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 3dee97e7d165..406989e992ba 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -31,7 +31,7 @@ static int mmc_prep_request(struct request_queue *q, struct request *req) /* * We only like normal block requests. */ - if (!blk_fs_request(req) && !blk_pc_request(req)) { + if (!blk_fs_request(req)) { blk_dump_rq_flags(req, "MMC bad request"); return BLKPREP_KILL; } @@ -131,6 +131,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock mq->req = NULL; blk_queue_prep_rq(mq->queue, mmc_prep_request); + blk_queue_ordered(mq->queue, QUEUE_ORDERED_DRAIN, NULL); #ifdef CONFIG_MMC_BLOCK_BOUNCE if (host->max_hw_segs == 1) { @@ -142,12 +143,19 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock bouncesz = host->max_req_size; if (bouncesz > host->max_seg_size) bouncesz = host->max_seg_size; + if (bouncesz > (host->max_blk_count * 512)) + bouncesz = host->max_blk_count * 512; + + if (bouncesz > 512) { + mq->bounce_buf = kmalloc(bouncesz, GFP_KERNEL); + if (!mq->bounce_buf) { + printk(KERN_WARNING "%s: unable to " + "allocate bounce buffer\n", + mmc_card_name(card)); + } + } - mq->bounce_buf = kmalloc(bouncesz, GFP_KERNEL); - if (!mq->bounce_buf) { - printk(KERN_WARNING "%s: unable to allocate " - "bounce buffer\n", mmc_card_name(card)); - } else { + if (mq->bounce_buf) { blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_ANY); blk_queue_max_sectors(mq->queue, bouncesz / 512); blk_queue_max_phys_segments(mq->queue, bouncesz / 512); @@ -175,7 +183,8 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock if (!mq->bounce_buf) { blk_queue_bounce_limit(mq->queue, limit); - blk_queue_max_sectors(mq->queue, host->max_req_size / 512); + blk_queue_max_sectors(mq->queue, + min(host->max_blk_count, host->max_req_size / 512)); blk_queue_max_phys_segments(mq->queue, host->max_phys_segs); blk_queue_max_hw_segments(mq->queue, host->max_hw_segs); blk_queue_max_segment_size(mq->queue, host->max_seg_size); |