From 99ba04053a3712498327bd147c22a9877100a904 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Thu, 27 Nov 2008 17:23:49 +0100 Subject: [PATCH 01/16] mmc: at91_mci: reorder timer setup and mmc_add_host() call As said in function comment mmc_add_host() requires that: "The host must be prepared to start servicing requests before this function completes." During this function, at91_mci_request() can be invoqued without timer beeing setup leading to a kernel Oops. This has been reported inserting this driver as a module. Signed-off-by: Nicolas Ferre Reported-by: Wu Xuan Signed-off-by: Pierre Ossman --- drivers/mmc/host/at91_mci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c index 1f8b5b36222c..e556d42cc45a 100644 --- a/drivers/mmc/host/at91_mci.c +++ b/drivers/mmc/host/at91_mci.c @@ -1088,6 +1088,8 @@ static int __init at91_mci_probe(struct platform_device *pdev) goto fail0; } + setup_timer(&host->timer, at91_timeout_timer, (unsigned long)host); + platform_set_drvdata(pdev, mmc); /* @@ -1101,8 +1103,6 @@ static int __init at91_mci_probe(struct platform_device *pdev) mmc_add_host(mmc); - setup_timer(&host->timer, at91_timeout_timer, (unsigned long)host); - /* * monitor card insertion/removal if we can */ From 98444d3dd975653a4a970ecc0dfc30918da92f60 Mon Sep 17 00:00:00 2001 From: Sascha Sommer Date: Sat, 29 Nov 2008 07:51:19 +0100 Subject: [PATCH 02/16] sdricoh_cs: Add support for Bay Controller devices Some Ricoh SD card readers seems to advertise themselves slightly differently. This patches the driver to will recognise an additional product id, and it appears to work perfectly. % pccardctl info PRODID_1="RICOH" PRODID_2="Bay Controller" PRODID_3="" PRODID_4="" MANFID=0000,0000 Signed-off-by: Charles Lowe Acked-by: Sascha Sommer Signed-off-by: Pierre Ossman --- drivers/mmc/host/sdricoh_cs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/sdricoh_cs.c b/drivers/mmc/host/sdricoh_cs.c index 1df44d966bdb..435863370017 100644 --- a/drivers/mmc/host/sdricoh_cs.c +++ b/drivers/mmc/host/sdricoh_cs.c @@ -82,6 +82,8 @@ static struct pcmcia_device_id pcmcia_ids[] = { /* vendor and device strings followed by their crc32 hashes */ PCMCIA_DEVICE_PROD_ID12("RICOH", "Bay1Controller", 0xd9f522ed, 0xc3901202), + PCMCIA_DEVICE_PROD_ID12("RICOH", "Bay Controller", 0xd9f522ed, + 0xace80909), PCMCIA_DEVICE_NULL, }; From 092f82edbe96d0a08e1d10436927e89fa101fe0d Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Sun, 28 Sep 2008 16:15:56 -0700 Subject: [PATCH 03/16] pci: use pci_ioremap_bar() in drivers/mmc Use the new pci_ioremap_bar() function in drivers/mmc. pci_ioremap_bar() just takes a pci device and a bar number, with the goal of making it really hard to get wrong, while also having a central place to stick sanity checks. Signed-off-by: Arjan van de Ven Signed-off-by: Pierre Ossman --- drivers/mmc/host/sdhci-pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 9bd7026b0021..f07255cb17ee 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -545,7 +545,7 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( } addr = pci_resource_start(pdev, bar); - host->ioaddr = ioremap_nocache(addr, pci_resource_len(pdev, bar)); + host->ioaddr = pci_ioremap_bar(pdev, bar); if (!host->ioaddr) { dev_err(&pdev->dev, "failed to remap registers\n"); goto release; From b7a03210b7b381e06f71751cb9addfae7704489c Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Wed, 22 Oct 2008 17:09:00 -0700 Subject: [PATCH 04/16] mmc: trivial annotation of 'blocks' sg_init_one is reading a be32, annotate as such. Signed-off-by: Harvey Harrison Signed-off-by: Pierre Ossman --- drivers/mmc/card/block.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 3d067c35185d..903c8aae54bb 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -145,7 +145,7 @@ struct mmc_blk_request { static u32 mmc_sd_num_wr_blocks(struct mmc_card *card) { int err; - u32 blocks; + __be32 blocks; struct mmc_request mrq; struct mmc_command cmd; @@ -204,9 +204,7 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card) if (cmd.error || data.error) return (u32)-1; - blocks = ntohl(blocks); - - return blocks; + return ntohl(blocks); } static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) From 35ff8554d12ecc80a46ea0d9bce34fe28733ff38 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=89ric=20Piel?= Date: Sat, 22 Nov 2008 19:29:29 +0100 Subject: [PATCH 05/16] sdhci: activate led support also when module CONFIG_LEDS_CLASS is defined only if led-class is built-in, otherwise when it is a module the option is called CONFIG_LEDS_CLASS_MODULE. Led support should also be activated in this case. Signed-off-by: Eric Piel Signed-off-by: Pierre Ossman --- drivers/mmc/host/sdhci.c | 12 ++++++------ drivers/mmc/host/sdhci.h | 2 +- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 4d010a984bed..3b1b54f9b0fe 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -149,7 +149,7 @@ static void sdhci_deactivate_led(struct sdhci_host *host) writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); } -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) static void sdhci_led_control(struct led_classdev *led, enum led_brightness brightness) { @@ -994,7 +994,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) WARN_ON(host->mrq != NULL); -#ifndef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) sdhci_activate_led(host); #endif @@ -1201,7 +1201,7 @@ static void sdhci_tasklet_finish(unsigned long param) host->cmd = NULL; host->data = NULL; -#ifndef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) sdhci_deactivate_led(host); #endif @@ -1717,7 +1717,7 @@ int sdhci_add_host(struct sdhci_host *host) sdhci_dumpregs(host); #endif -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) host->led.name = mmc_hostname(mmc); host->led.brightness = LED_OFF; host->led.default_trigger = mmc_hostname(mmc); @@ -1739,7 +1739,7 @@ int sdhci_add_host(struct sdhci_host *host) return 0; -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) reset: sdhci_reset(host, SDHCI_RESET_ALL); free_irq(host->irq, host); @@ -1775,7 +1775,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) mmc_remove_host(host->mmc); -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) led_classdev_unregister(&host->led); #endif diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 31f4b1528e76..3efba2363941 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -220,7 +220,7 @@ struct sdhci_host { struct mmc_host *mmc; /* MMC structure */ u64 dma_mask; /* custom DMA mask */ -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) struct led_classdev led; /* LED control */ #endif From b30f8af3358b5c66be223e3a9f3d11b3d02b4a8f Mon Sep 17 00:00:00 2001 From: Jarkko Lavinen Date: Mon, 17 Nov 2008 14:35:21 +0200 Subject: [PATCH 06/16] mmc: Add 8-bit bus width support Signed-off-by: Jarkko Lavinen Signed-off-by: Pierre Ossman --- drivers/mmc/core/mmc.c | 18 ++++++++++++++---- include/linux/mmc/host.h | 2 ++ 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index fdd7c760be8c..c232d11a7ed4 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -434,13 +434,24 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * Activate wide bus (if supported). */ if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && - (host->caps & MMC_CAP_4_BIT_DATA)) { + (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { + unsigned ext_csd_bit, bus_width; + + if (host->caps & MMC_CAP_8_BIT_DATA) { + ext_csd_bit = EXT_CSD_BUS_WIDTH_8; + bus_width = MMC_BUS_WIDTH_8; + } else { + ext_csd_bit = EXT_CSD_BUS_WIDTH_4; + bus_width = MMC_BUS_WIDTH_4; + } + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_4); + EXT_CSD_BUS_WIDTH, ext_csd_bit); + if (err) goto free_card; - mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); + mmc_set_bus_width(card->host, bus_width); } if (!oldcard) @@ -624,4 +635,3 @@ err: return err; } - diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index f842f234e44f..4e457256bd33 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -41,6 +41,7 @@ struct mmc_ios { #define MMC_BUS_WIDTH_1 0 #define MMC_BUS_WIDTH_4 2 +#define MMC_BUS_WIDTH_8 3 unsigned char timing; /* timing specification used */ @@ -116,6 +117,7 @@ struct mmc_host { #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */ #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */ #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */ +#define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */ /* host specific block data */ unsigned int max_seg_size; /* see blk_queue_max_segment_size */ From 0527a60c2b6bd7ab20e82cc5e488659e20eaaacd Mon Sep 17 00:00:00 2001 From: "philipl@overt.org" Date: Sun, 30 Nov 2008 20:27:50 -0500 Subject: [PATCH 07/16] ricoh_mmc: Handle newer models of Ricoh controllers The latest generation of laptops are shipping with a newer model of Ricoh chip where the firewire controller is the primary PCI function but a cardbus controller is also present. The existing code assumes that if a cardbus controller is, present, then it must be the one to manipulate - but the real rule is that you manipulate PCI function 0. This patch adds an additional constraint that the target must be function 0. Signed-off-by: Philip Langdale Signed-off-by: Pierre Ossman --- drivers/mmc/host/ricoh_mmc.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/host/ricoh_mmc.c b/drivers/mmc/host/ricoh_mmc.c index a16d7609e4ee..be9e7b32b34e 100644 --- a/drivers/mmc/host/ricoh_mmc.c +++ b/drivers/mmc/host/ricoh_mmc.c @@ -11,9 +11,10 @@ /* * This is a conceptually ridiculous driver, but it is required by the way - * the Ricoh multi-function R5C832 works. This chip implements firewire - * and four different memory card controllers. Two of those controllers are - * an SDHCI controller and a proprietary MMC controller. The linux SDHCI + * the Ricoh multi-function chips (R5CXXX) work. These chips implement + * the four main memory card controllers (SD, MMC, MS, xD) and one or both + * of cardbus or firewire. It happens that they implement SD and MMC + * support as separate controllers (and PCI functions). The linux SDHCI * driver supports MMC cards but the chip detects MMC cards in hardware * and directs them to the MMC controller - so the SDHCI driver never sees * them. To get around this, we must disable the useless MMC controller. @@ -21,8 +22,10 @@ * a detection event occurs immediately, even if the MMC card is already * in the reader. * - * The relevant registers live on the firewire function, so this is unavoidably - * ugly. Such is life. + * It seems to be the case that the relevant PCI registers to deactivate the + * MMC controller live on PCI function 0, which might be the cardbus controller + * or the firewire controller, depending on the particular chip in question. As + * such, it makes what this driver has to do unavoidably ugly. Such is life. */ #include @@ -143,6 +146,7 @@ static int __devinit ricoh_mmc_probe(struct pci_dev *pdev, pci_get_device(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, fw_dev))) { if (PCI_SLOT(pdev->devfn) == PCI_SLOT(fw_dev->devfn) && + PCI_FUNC(fw_dev->devfn) == 0 && pdev->bus == fw_dev->bus) { if (ricoh_mmc_disable(fw_dev) != 0) return -ENODEV; @@ -160,6 +164,7 @@ static int __devinit ricoh_mmc_probe(struct pci_dev *pdev, (fw_dev = pci_get_device(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, fw_dev))) { if (PCI_SLOT(pdev->devfn) == PCI_SLOT(fw_dev->devfn) && + PCI_FUNC(fw_dev->devfn) == 0 && pdev->bus == fw_dev->bus) { if (ricoh_mmc_disable(fw_dev) != 0) return -ENODEV; @@ -172,7 +177,7 @@ static int __devinit ricoh_mmc_probe(struct pci_dev *pdev, if (!ctrlfound) { printk(KERN_WARNING DRIVER_NAME - ": Main firewire function not found. Cannot disable controller.\n"); + ": Main Ricoh function not found. Cannot disable controller.\n"); return -ENODEV; } From 86e8286a0e48663e1e86a5884b30a6d05de2993a Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Wed, 26 Nov 2008 22:54:17 +0300 Subject: [PATCH 08/16] mmc: Add mmc_vddrange_to_ocrmask() helper function This function sets the OCR mask bits according to provided voltage ranges. Will be used by the mmc_spi OpenFirmware bindings. Signed-off-by: Anton Vorontsov Signed-off-by: Pierre Ossman --- drivers/mmc/core/core.c | 75 ++++++++++++++++++++++++++++++++++++++++ include/linux/mmc/core.h | 2 ++ 2 files changed, 77 insertions(+) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index f7284b905eb3..5f288aeeb721 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include @@ -448,6 +449,80 @@ void mmc_set_bus_width(struct mmc_host *host, unsigned int width) mmc_set_ios(host); } +/** + * mmc_vdd_to_ocrbitnum - Convert a voltage to the OCR bit number + * @vdd: voltage (mV) + * @low_bits: prefer low bits in boundary cases + * + * This function returns the OCR bit number according to the provided @vdd + * value. If conversion is not possible a negative errno value returned. + * + * Depending on the @low_bits flag the function prefers low or high OCR bits + * on boundary voltages. For example, + * with @low_bits = true, 3300 mV translates to ilog2(MMC_VDD_32_33); + * with @low_bits = false, 3300 mV translates to ilog2(MMC_VDD_33_34); + * + * Any value in the [1951:1999] range translates to the ilog2(MMC_VDD_20_21). + */ +static int mmc_vdd_to_ocrbitnum(int vdd, bool low_bits) +{ + const int max_bit = ilog2(MMC_VDD_35_36); + int bit; + + if (vdd < 1650 || vdd > 3600) + return -EINVAL; + + if (vdd >= 1650 && vdd <= 1950) + return ilog2(MMC_VDD_165_195); + + if (low_bits) + vdd -= 1; + + /* Base 2000 mV, step 100 mV, bit's base 8. */ + bit = (vdd - 2000) / 100 + 8; + if (bit > max_bit) + return max_bit; + return bit; +} + +/** + * mmc_vddrange_to_ocrmask - Convert a voltage range to the OCR mask + * @vdd_min: minimum voltage value (mV) + * @vdd_max: maximum voltage value (mV) + * + * This function returns the OCR mask bits according to the provided @vdd_min + * and @vdd_max values. If conversion is not possible the function returns 0. + * + * Notes wrt boundary cases: + * This function sets the OCR bits for all boundary voltages, for example + * [3300:3400] range is translated to MMC_VDD_32_33 | MMC_VDD_33_34 | + * MMC_VDD_34_35 mask. + */ +u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max) +{ + u32 mask = 0; + + if (vdd_max < vdd_min) + return 0; + + /* Prefer high bits for the boundary vdd_max values. */ + vdd_max = mmc_vdd_to_ocrbitnum(vdd_max, false); + if (vdd_max < 0) + return 0; + + /* Prefer low bits for the boundary vdd_min values. */ + vdd_min = mmc_vdd_to_ocrbitnum(vdd_min, true); + if (vdd_min < 0) + return 0; + + /* Fill the mask, from max bit to min bit. */ + while (vdd_max >= vdd_min) + mask |= 1 << vdd_max--; + + return mask; +} +EXPORT_SYMBOL(mmc_vddrange_to_ocrmask); + /* * Mask off any voltages we don't support and select * the lowest voltage diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 143cebf0586f..7ac8b500d55c 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -151,4 +151,6 @@ static inline void mmc_claim_host(struct mmc_host *host) __mmc_claim_host(host, NULL); } +extern u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max); + #endif From 504f191f25b1671802246bac06c9f59f94f0b7de Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 16 Oct 2008 12:55:25 +0300 Subject: [PATCH 09/16] mmc_block: print better error messages Add command response and card status to error messages. Signed-off-by: Adrian Hunter Signed-off-by: Pierre Ossman --- drivers/mmc/card/block.c | 44 +++++++++++++++++++++++++++++++++------- 1 file changed, 37 insertions(+), 7 deletions(-) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 903c8aae54bb..cc9b3abf4a3f 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -207,6 +207,23 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card) return ntohl(blocks); } +static u32 get_card_status(struct mmc_card *card, struct request *req) +{ + struct mmc_command cmd; + int err; + + memset(&cmd, 0, sizeof(struct mmc_command)); + cmd.opcode = MMC_SEND_STATUS; + if (!mmc_host_is_spi(card->host)) + cmd.arg = card->rca << 16; + cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC; + err = mmc_wait_for_cmd(card->host, &cmd, 0); + if (err) + printk(KERN_ERR "%s: error %d sending status comand", + req->rq_disk->disk_name, err); + return cmd.resp[0]; +} + static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) { struct mmc_blk_data *md = mq->data; @@ -218,7 +235,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) do { struct mmc_command cmd; - u32 readcmd, writecmd; + u32 readcmd, writecmd, status = 0; memset(&brq, 0, sizeof(struct mmc_blk_request)); brq.mrq.cmd = &brq.cmd; @@ -273,19 +290,32 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) * until later as we need to wait for the card to leave * programming mode even when things go wrong. */ + if (brq.cmd.error || brq.data.error || brq.stop.error) + status = get_card_status(card, req); + if (brq.cmd.error) { - printk(KERN_ERR "%s: error %d sending read/write command\n", - req->rq_disk->disk_name, brq.cmd.error); + printk(KERN_ERR "%s: error %d sending read/write " + "command, response %#x, card status %#x\n", + req->rq_disk->disk_name, brq.cmd.error, + brq.cmd.resp[0], status); } if (brq.data.error) { - printk(KERN_ERR "%s: error %d transferring data\n", - req->rq_disk->disk_name, brq.data.error); + if (brq.data.error == -ETIMEDOUT && brq.mrq.stop) + /* 'Stop' response contains card status */ + status = brq.mrq.stop->resp[0]; + printk(KERN_ERR "%s: error %d transferring data," + " sector %u, nr %u, card status %#x\n", + req->rq_disk->disk_name, brq.data.error, + (unsigned)req->sector, + (unsigned)req->nr_sectors, status); } if (brq.stop.error) { - printk(KERN_ERR "%s: error %d sending stop command\n", - req->rq_disk->disk_name, brq.stop.error); + printk(KERN_ERR "%s: error %d sending stop command, " + "response %#x, card status %#x\n", + req->rq_disk->disk_name, brq.stop.error, + brq.stop.resp[0], status); } if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) { From ca4f10563929b932ed8970fda41a7f99385e4b0b Mon Sep 17 00:00:00 2001 From: Roel Kluin Date: Sat, 13 Dec 2008 21:21:33 +0100 Subject: [PATCH 10/16] mmc: balanc pci_iomap with pci_iounmap balance pci_iomap with pci_iounmap, not iounmap Signed-off-by: Roel Kluin Signed-off-by: Pierre Ossman --- drivers/mmc/host/sdricoh_cs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdricoh_cs.c b/drivers/mmc/host/sdricoh_cs.c index 1df44d966bdb..d4748a8e0ded 100644 --- a/drivers/mmc/host/sdricoh_cs.c +++ b/drivers/mmc/host/sdricoh_cs.c @@ -463,7 +463,7 @@ static int sdricoh_init_mmc(struct pci_dev *pci_dev, err: if (iobase) - iounmap(iobase); + pci_iounmap(pci_dev, iobase); if (mmc) mmc_free_host(mmc); From f9134319c81c6c56e0ddf38e7adac2492b243d9b Mon Sep 17 00:00:00 2001 From: Pierre Ossman Date: Sun, 21 Dec 2008 17:01:48 +0100 Subject: [PATCH 11/16] sdhci: handle built-in sdhci with modular leds class As reported by Randy Dunlap, having sdhci built-in and LEDs class as a module resulted in undefined symbols. Change the code to handle that case properly (by not having LEDs class support in sdhci). Signed-off-by: Pierre Ossman --- drivers/mmc/host/sdhci.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 3b1b54f9b0fe..6b2d1f99af67 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -30,6 +30,11 @@ #define DBG(f, x...) \ pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x) +#if defined(CONFIG_LEDS_CLASS) || (defined(CONFIG_LEDS_CLASS_MODULE) && \ + defined(CONFIG_MMC_SDHCI_MODULE)) +#define SDHCI_USE_LEDS_CLASS +#endif + static unsigned int debug_quirks = 0; static void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *); @@ -149,7 +154,7 @@ static void sdhci_deactivate_led(struct sdhci_host *host) writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); } -#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) +#ifdef SDHCI_USE_LEDS_CLASS static void sdhci_led_control(struct led_classdev *led, enum led_brightness brightness) { @@ -994,7 +999,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) WARN_ON(host->mrq != NULL); -#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) +#ifndef SDHCI_USE_LEDS_CLASS sdhci_activate_led(host); #endif @@ -1201,7 +1206,7 @@ static void sdhci_tasklet_finish(unsigned long param) host->cmd = NULL; host->data = NULL; -#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) +#ifndef SDHCI_USE_LEDS_CLASS sdhci_deactivate_led(host); #endif @@ -1717,7 +1722,7 @@ int sdhci_add_host(struct sdhci_host *host) sdhci_dumpregs(host); #endif -#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) +#ifdef SDHCI_USE_LEDS_CLASS host->led.name = mmc_hostname(mmc); host->led.brightness = LED_OFF; host->led.default_trigger = mmc_hostname(mmc); @@ -1739,7 +1744,7 @@ int sdhci_add_host(struct sdhci_host *host) return 0; -#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) +#ifdef SDHCI_USE_LEDS_CLASS reset: sdhci_reset(host, SDHCI_RESET_ALL); free_irq(host->irq, host); @@ -1775,7 +1780,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) mmc_remove_host(host->mmc); -#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) +#ifdef SDHCI_USE_LEDS_CLASS led_classdev_unregister(&host->led); #endif From a0d045cac9bcb3e9a9796d596415f7ffb64852e2 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 16 Dec 2008 16:13:09 +0100 Subject: [PATCH 12/16] drivers/mmc: Move a dereference below a NULL test In each case, if the NULL test is necessary, then the dereference should be moved below the NULL test. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // @@ type T; expression E; identifier i,fld; statement S; @@ - T i = E->fld; + T i; ... when != E when != i if (E == NULL) S + i = E->fld; // Signed-off-by: Julia Lawall Signed-off-by: Pierre Ossman --- drivers/mmc/host/tmio_mmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index 95430b81ec11..6a7a61904833 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -224,7 +224,7 @@ static inline void tmio_mmc_data_irq(struct tmio_mmc_host *host) { void __iomem *ctl = host->ctl; struct mmc_data *data = host->data; - struct mmc_command *stop = data->stop; + struct mmc_command *stop; host->data = NULL; @@ -232,6 +232,7 @@ static inline void tmio_mmc_data_irq(struct tmio_mmc_host *host) pr_debug("Spurious data end IRQ\n"); return; } + stop = data->stop; /* FIXME - return correct transfer count on errors */ if (!data->error) From 6a79e391df295bd7c2aa1309ea5031f361c197fd Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Wed, 31 Dec 2008 18:21:17 +0100 Subject: [PATCH 13/16] mmc_block: ensure all sectors that do not have errors are read If a card encounters an ECC error while reading a sector it will timeout. Instead of reporting the entire I/O request as having an error, redo the I/O one sector at a time so that all readable sectors are provided to the upper layers. Signed-off-by: Adrian Hunter Signed-off-by: Pierre Ossman --- drivers/mmc/card/block.c | 76 +++++++++++++++++++++++++++++++--------- 1 file changed, 59 insertions(+), 17 deletions(-) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index cc9b3abf4a3f..45b1f430685f 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -229,7 +229,7 @@ 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; + int ret = 1, disable_multi = 0; mmc_claim_host(card->host); @@ -251,6 +251,14 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) brq.stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; brq.data.blocks = req->nr_sectors; + /* + * After a read error, we redo the request one sector at a time + * in order to accurately determine which sectors can be read + * successfully. + */ + if (disable_multi && brq.data.blocks > 1) + brq.data.blocks = 1; + if (brq.data.blocks > 1) { /* SPI multiblock writes terminate using a special * token, not a STOP_TRANSMISSION request. @@ -279,6 +287,25 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) brq.data.sg = mq->sg; brq.data.sg_len = mmc_queue_map_sg(mq); + /* + * Adjust the sg list so it is the same size as the + * request. + */ + if (brq.data.blocks != req->nr_sectors) { + int i, data_size = brq.data.blocks << 9; + struct scatterlist *sg; + + 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_queue_bounce_pre(mq); mmc_wait_for_req(card->host, &brq.mrq); @@ -290,8 +317,16 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) * until later as we need to wait for the card to leave * programming mode even when things go wrong. */ - if (brq.cmd.error || brq.data.error || brq.stop.error) + if (brq.cmd.error || brq.data.error || brq.stop.error) { + if (brq.data.blocks > 1 && rq_data_dir(req) == READ) { + /* Redo read one sector at a time */ + printk(KERN_WARNING "%s: retrying using single " + "block read\n", req->rq_disk->disk_name); + disable_multi = 1; + continue; + } status = get_card_status(card, req); + } if (brq.cmd.error) { printk(KERN_ERR "%s: error %d sending read/write " @@ -348,8 +383,20 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) #endif } - if (brq.cmd.error || brq.data.error || brq.stop.error) + if (brq.cmd.error || brq.stop.error || brq.data.error) { + if (rq_data_dir(req) == READ) { + /* + * After an error, we redo I/O one sector at a + * time, so we only reach here after trying to + * read a single sector. + */ + spin_lock_irq(&md->lock); + ret = __blk_end_request(req, -EIO, brq.data.blksz); + spin_unlock_irq(&md->lock); + continue; + } goto cmd_err; + } /* * A block was successfully transferred. @@ -371,25 +418,20 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) * If the card is not SD, we can still ok written sectors * as reported by the controller (which might be less than * the real number of written sectors, but never more). - * - * For reads we just fail the entire chunk as that should - * be safe in all cases. */ - if (rq_data_dir(req) != READ) { - if (mmc_card_sd(card)) { - u32 blocks; + if (mmc_card_sd(card)) { + u32 blocks; - blocks = mmc_sd_num_wr_blocks(card); - if (blocks != (u32)-1) { - spin_lock_irq(&md->lock); - ret = __blk_end_request(req, 0, blocks << 9); - spin_unlock_irq(&md->lock); - } - } else { + blocks = mmc_sd_num_wr_blocks(card); + if (blocks != (u32)-1) { spin_lock_irq(&md->lock); - ret = __blk_end_request(req, 0, brq.data.bytes_xfered); + ret = __blk_end_request(req, 0, blocks << 9); spin_unlock_irq(&md->lock); } + } else { + spin_lock_irq(&md->lock); + ret = __blk_end_request(req, 0, brq.data.bytes_xfered); + spin_unlock_irq(&md->lock); } mmc_release_host(card->host); From c00a46abd4d45a67ff62f4ff6d4f839dff38b877 Mon Sep 17 00:00:00 2001 From: Vernon Sauder Date: Mon, 29 Dec 2008 19:21:28 -0500 Subject: [PATCH 14/16] pxamci: fix dma_unmap_sg length dma_unmap_sg should be given the same length as dma_map_sg, not the value returned from dma_map_sg Signed-off-by: Vernon Sauder Signed-off-by: Pierre Ossman --- drivers/mmc/host/pxamci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index f88cc7406354..3c5483b75da4 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -283,7 +283,7 @@ static int pxamci_data_done(struct pxamci_host *host, unsigned int stat) return 0; DCSR(host->dma) = 0; - dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->dma_len, + dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, host->dma_dir); if (stat & STAT_READ_TIME_OUT) From 9c43df57910bbba540a6cb5c9132302a9ea5f41a Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Tue, 30 Dec 2008 18:15:28 +0300 Subject: [PATCH 15/16] mmc_spi: Add support for OpenFirmware bindings The support is implemented via platform data accessors, new module (of_mmc_spi) will be created automatically when the driver compiles on OpenFirmware platforms. Link-time dependency will load the module automatically. Signed-off-by: Anton Vorontsov Signed-off-by: Pierre Ossman --- drivers/mmc/host/Makefile | 3 + drivers/mmc/host/mmc_spi.c | 4 +- drivers/mmc/host/of_mmc_spi.c | 149 ++++++++++++++++++++++++++++++++++ include/linux/spi/mmc_spi.h | 15 +++- 4 files changed, 169 insertions(+), 2 deletions(-) create mode 100644 drivers/mmc/host/of_mmc_spi.c diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index c794cc5ce442..f4853288bbb1 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -19,6 +19,9 @@ obj-$(CONFIG_MMC_AT91) += at91_mci.o obj-$(CONFIG_MMC_ATMELMCI) += atmel-mci.o obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o obj-$(CONFIG_MMC_SPI) += mmc_spi.o +ifeq ($(CONFIG_OF),y) +obj-$(CONFIG_MMC_SPI) += of_mmc_spi.o +endif obj-$(CONFIG_MMC_S3C) += s3cmci.o obj-$(CONFIG_MMC_SDRICOH_CS) += sdricoh_cs.o obj-$(CONFIG_MMC_TMIO) += tmio_mmc.o diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index ad00e1632317..87e211df68ac 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1285,7 +1285,7 @@ static int mmc_spi_probe(struct spi_device *spi) /* Platform data is used to hook up things like card sensing * and power switching gpios. */ - host->pdata = spi->dev.platform_data; + host->pdata = mmc_spi_get_pdata(spi); if (host->pdata) mmc->ocr_avail = host->pdata->ocr_mask; if (!mmc->ocr_avail) { @@ -1368,6 +1368,7 @@ fail_glue_init: fail_nobuf1: mmc_free_host(mmc); + mmc_spi_put_pdata(spi); dev_set_drvdata(&spi->dev, NULL); nomem: @@ -1402,6 +1403,7 @@ static int __devexit mmc_spi_remove(struct spi_device *spi) spi->max_speed_hz = mmc->f_max; mmc_free_host(mmc); + mmc_spi_put_pdata(spi); dev_set_drvdata(&spi->dev, NULL); } return 0; diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c new file mode 100644 index 000000000000..fb2921f8099d --- /dev/null +++ b/drivers/mmc/host/of_mmc_spi.c @@ -0,0 +1,149 @@ +/* + * OpenFirmware bindings for the MMC-over-SPI driver + * + * Copyright (c) MontaVista Software, Inc. 2008. + * + * Author: Anton Vorontsov + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +enum { + CD_GPIO = 0, + WP_GPIO, + NUM_GPIOS, +}; + +struct of_mmc_spi { + int gpios[NUM_GPIOS]; + bool alow_gpios[NUM_GPIOS]; + struct mmc_spi_platform_data pdata; +}; + +static struct of_mmc_spi *to_of_mmc_spi(struct device *dev) +{ + return container_of(dev->platform_data, struct of_mmc_spi, pdata); +} + +static int of_mmc_spi_read_gpio(struct device *dev, int gpio_num) +{ + struct of_mmc_spi *oms = to_of_mmc_spi(dev); + bool active_low = oms->alow_gpios[gpio_num]; + bool value = gpio_get_value(oms->gpios[gpio_num]); + + return active_low ^ value; +} + +static int of_mmc_spi_get_cd(struct device *dev) +{ + return of_mmc_spi_read_gpio(dev, CD_GPIO); +} + +static int of_mmc_spi_get_ro(struct device *dev) +{ + return of_mmc_spi_read_gpio(dev, WP_GPIO); +} + +struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) +{ + struct device *dev = &spi->dev; + struct device_node *np = dev_archdata_get_node(&dev->archdata); + struct of_mmc_spi *oms; + const u32 *voltage_ranges; + int num_ranges; + int i; + int ret = -EINVAL; + + if (dev->platform_data || !np) + return dev->platform_data; + + oms = kzalloc(sizeof(*oms), GFP_KERNEL); + if (!oms) + return NULL; + + voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges); + num_ranges = num_ranges / sizeof(*voltage_ranges) / 2; + if (!voltage_ranges || !num_ranges) { + dev_err(dev, "OF: voltage-ranges unspecified\n"); + goto err_ocr; + } + + for (i = 0; i < num_ranges; i++) { + const int j = i * 2; + u32 mask; + + mask = mmc_vddrange_to_ocrmask(voltage_ranges[j], + voltage_ranges[j + 1]); + if (!mask) { + ret = -EINVAL; + dev_err(dev, "OF: voltage-range #%d is invalid\n", i); + goto err_ocr; + } + oms->pdata.ocr_mask |= mask; + } + + for (i = 0; i < ARRAY_SIZE(oms->gpios); i++) { + enum of_gpio_flags gpio_flags; + + oms->gpios[i] = of_get_gpio_flags(np, i, &gpio_flags); + if (!gpio_is_valid(oms->gpios[i])) + continue; + + ret = gpio_request(oms->gpios[i], dev->bus_id); + if (ret < 0) { + oms->gpios[i] = -EINVAL; + continue; + } + + if (gpio_flags & OF_GPIO_ACTIVE_LOW) + oms->alow_gpios[i] = true; + } + + if (gpio_is_valid(oms->gpios[CD_GPIO])) + oms->pdata.get_cd = of_mmc_spi_get_cd; + if (gpio_is_valid(oms->gpios[WP_GPIO])) + oms->pdata.get_ro = of_mmc_spi_get_ro; + + /* We don't support interrupts yet, let's poll. */ + oms->pdata.caps |= MMC_CAP_NEEDS_POLL; + + dev->platform_data = &oms->pdata; + return dev->platform_data; +err_ocr: + kfree(oms); + return NULL; +} +EXPORT_SYMBOL(mmc_spi_get_pdata); + +void mmc_spi_put_pdata(struct spi_device *spi) +{ + struct device *dev = &spi->dev; + struct device_node *np = dev_archdata_get_node(&dev->archdata); + struct of_mmc_spi *oms = to_of_mmc_spi(dev); + int i; + + if (!dev->platform_data || !np) + return; + + for (i = 0; i < ARRAY_SIZE(oms->gpios); i++) { + if (gpio_is_valid(oms->gpios[i])) + gpio_free(oms->gpios[i]); + } + kfree(oms); + dev->platform_data = NULL; +} +EXPORT_SYMBOL(mmc_spi_put_pdata); diff --git a/include/linux/spi/mmc_spi.h b/include/linux/spi/mmc_spi.h index a3626aedaec9..0f4eb165f254 100644 --- a/include/linux/spi/mmc_spi.h +++ b/include/linux/spi/mmc_spi.h @@ -1,9 +1,10 @@ #ifndef __LINUX_SPI_MMC_SPI_H #define __LINUX_SPI_MMC_SPI_H +#include +#include #include -struct device; struct mmc_host; /* Put this in platform_data of a device being used to manage an MMC/SD @@ -41,4 +42,16 @@ struct mmc_spi_platform_data { void (*setpower)(struct device *, unsigned int maskval); }; +#ifdef CONFIG_OF +extern struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi); +extern void mmc_spi_put_pdata(struct spi_device *spi); +#else +static inline struct mmc_spi_platform_data * +mmc_spi_get_pdata(struct spi_device *spi) +{ + return spi->dev.platform_data; +} +static inline void mmc_spi_put_pdata(struct spi_device *spi) {} +#endif /* CONFIG_OF */ + #endif /* __LINUX_SPI_MMC_SPI_H */ From f6e10b865c3ea56bdaa8c6ecfee313b997900dbb Mon Sep 17 00:00:00 2001 From: David Brownell Date: Wed, 31 Dec 2008 09:50:30 -0800 Subject: [PATCH 16/16] mmc: warn about voltage mismatches Get rid of a silent failure mode when the MMC/SD host doesn't support the voltages needed to operate a given card, by adding a warning. A 3.3V host and a 3.0V card, for example, no longer need to mysteriously just not work at all. This isn't the best diagnostic; ideally it would also tell what voltage the card and host support (and not just by dumping the bitmasks). Signed-off-by: David Brownell Signed-off-by: Pierre Ossman --- drivers/mmc/core/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 5f288aeeb721..df6ce4a06cf3 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -542,6 +542,8 @@ u32 mmc_select_voltage(struct mmc_host *host, u32 ocr) host->ios.vdd = bit; mmc_set_ios(host); } else { + pr_warning("%s: host doesn't support card's voltages\n", + mmc_hostname(host)); ocr = 0; }