From 42431acbac43eb47c774c29d370f5c59136805bf Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 24 Sep 2006 10:44:09 +0100 Subject: [PATCH] [MMC] MMC_CAP_BYTEBLOCK flag for non-log2 block sizes capable hosts Some MMC hosts can only handle log2 block sizes. Unfortunately, the MMC password support needs to be able to send non-log2 block sizes. Provide a capability so that the MMC password support can decide whether it should use this support or not. The unfortunate side effect of this host limitation is that any MMC card protected by a password which is not a log2 block size can not be accessed on a host which only allows a log2 block size. This change just adds the flag. The MMC password support code needs updating to use it (if and when it is finally submitted.) Signed-off-by: Russell King --- drivers/mmc/at91_mci.c | 1 + drivers/mmc/imxmmc.c | 2 +- drivers/mmc/omap.c | 7 ++++--- drivers/mmc/sdhci.c | 2 +- drivers/mmc/wbsd.c | 2 +- include/linux/mmc/host.h | 1 + 6 files changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/at91_mci.c b/drivers/mmc/at91_mci.c index 6b7638b8429..d34b7d9d92e 100644 --- a/drivers/mmc/at91_mci.c +++ b/drivers/mmc/at91_mci.c @@ -822,6 +822,7 @@ static int at91_mci_probe(struct platform_device *pdev) mmc->f_min = 375000; mmc->f_max = 25000000; mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; + mmc->caps = MMC_CAP_BYTEBLOCK; host = mmc_priv(mmc); host->mmc = mmc; diff --git a/drivers/mmc/imxmmc.c b/drivers/mmc/imxmmc.c index fb6565b98f3..1b79dd271aa 100644 --- a/drivers/mmc/imxmmc.c +++ b/drivers/mmc/imxmmc.c @@ -956,7 +956,7 @@ static int imxmci_probe(struct platform_device *pdev) mmc->f_min = 150000; mmc->f_max = CLK_RATE/2; mmc->ocr_avail = MMC_VDD_32_33; - mmc->caps |= MMC_CAP_4_BIT_DATA; + mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_BYTEBLOCK; /* MMC core transfer sizes tunable parameters */ mmc->max_hw_segs = 64; diff --git a/drivers/mmc/omap.c b/drivers/mmc/omap.c index ddf06b32c15..52c9e52e6b7 100644 --- a/drivers/mmc/omap.c +++ b/drivers/mmc/omap.c @@ -1034,13 +1034,14 @@ static int __init mmc_omap_probe(struct platform_device *pdev) host->irq = pdev->resource[1].start; host->base = (void __iomem*)IO_ADDRESS(r->start); - if (minfo->wire4) - mmc->caps |= MMC_CAP_4_BIT_DATA; - mmc->ops = &mmc_omap_ops; mmc->f_min = 400000; mmc->f_max = 24000000; mmc->ocr_avail = MMC_VDD_32_33|MMC_VDD_33_34; + mmc->caps = MMC_CAP_BYTEBLOCK; + + if (minfo->wire4) + mmc->caps |= MMC_CAP_4_BIT_DATA; /* Use scatterlist DMA to reduce per-transfer costs. * NOTE max_seg_size assumption that small blocks aren't diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index dea4edd1c43..fdfc3838dd7 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -1262,7 +1262,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) mmc->ops = &sdhci_ops; mmc->f_min = host->max_clk / 256; mmc->f_max = host->max_clk; - mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE; + mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK; mmc->ocr_avail = 0; if (caps & SDHCI_CAN_VDD_330) diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/wbsd.c index 4a6617d9a49..6435a6822ad 100644 --- a/drivers/mmc/wbsd.c +++ b/drivers/mmc/wbsd.c @@ -1323,7 +1323,7 @@ static int __devinit wbsd_alloc_mmc(struct device *dev) mmc->f_min = 375000; mmc->f_max = 24000000; mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; - mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE; + mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK; spin_lock_init(&host->lock); diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index b282ec9bba0..587264a58d5 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -86,6 +86,7 @@ struct mmc_host { #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ #define MMC_CAP_MULTIWRITE (1 << 1) /* Can accurately report bytes sent to card on error */ +#define MMC_CAP_BYTEBLOCK (1 << 2) /* Can do non-log2 block sizes */ /* host specific block data */ unsigned int max_seg_size; /* see blk_queue_max_segment_size */ -- 2.41.1