From: Linus Torvalds Date: Sat, 2 Dec 2006 16:29:04 +0000 (-0800) Subject: Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc X-Git-Url: http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=cdb54fac35812a21943f0e506e8e3b94b469a77c Merge branch 'for-linus' of /linux/kernel/git/drzeus/mmc * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc: mmc: correct request error handling mmc: Flush block queue when removing card mmc: sdhci high speed support mmc: Support for high speed SD cards mmc: Fix mmc_delay() function mmc: Add support for mmc v4 wide-bus modes [PATCH] mmc: Add support for mmc v4 high speed mode trivial change for mmc/Kconfig: MMC_PXA does not mean only PXA255 Make general code cleanups Add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags Platform device error handling cleanup Move register definitions away from the header file Change OMAP_MMC_{READ,WRITE} macros to use the host pointer Replace base with virt_base and phys_base mmc: constify mmc_host_ops vectors mmc: remove kernel_thread() --- --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -40,7 +40,7 @@ config MMC_ARMMMCI If unsure, say N. config MMC_PXA - tristate "Intel PXA255 Multimedia Card Interface support" + tristate "Intel PXA25x/26x/27x Multimedia Card Interface support" depends on ARCH_PXA && MMC help This selects the Intel(R) PXA(R) Multimedia card Interface. --- a/drivers/mmc/at91_mci.c +++ b/drivers/mmc/at91_mci.c @@ -793,7 +793,7 @@ int at91_mci_get_ro(struct mmc_host *mmc return read_only; } -static struct mmc_host_ops at91_mci_ops = { +static const struct mmc_host_ops at91_mci_ops = { .request = at91_mci_request, .set_ios = at91_mci_set_ios, .get_ro = at91_mci_get_ro, --- a/drivers/mmc/au1xmmc.c +++ b/drivers/mmc/au1xmmc.c @@ -875,7 +875,7 @@ static void au1xmmc_init_dma(struct au1x host->rx_chan = rxchan; } -struct mmc_host_ops au1xmmc_ops = { +struct const mmc_host_ops au1xmmc_ops = { .request = au1xmmc_request, .set_ios = au1xmmc_set_ios, }; --- a/drivers/mmc/imxmmc.c +++ b/drivers/mmc/imxmmc.c @@ -877,7 +877,7 @@ static void imxmci_set_ios(struct mmc_ho } } -static struct mmc_host_ops imxmci_ops = { +static const struct mmc_host_ops imxmci_ops = { .request = imxmci_request, .set_ios = imxmci_set_ios, }; --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -4,6 +4,7 @@ * Copyright (C) 2003-2004 Russell King, All Rights Reserved. * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved. * SD support Copyright (C) 2005 Pierre Ossman, All Rights Reserved. + * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -396,23 +397,23 @@ static int mmc_select_card(struct mmc_ho return err; /* - * Default bus width is 1 bit. - */ - host->ios.bus_width = MMC_BUS_WIDTH_1; - - /* - * We can only change the bus width of the selected - * card so therefore we have to put the handling + * We can only change the bus width of SD cards when + * they are selected so we have to put the handling * here. + * + * The card is in 1 bit mode by default so + * we only need to change if it supports the + * wider version. */ - if (host->caps & MMC_CAP_4_BIT_DATA) { + if (mmc_card_sd(card) && + (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { + /* - * The card is in 1 bit mode by default so - * we only need to change if it supports the - * wider version. - */ - if (mmc_card_sd(card) && - (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { + * Default bus width is 1 bit. + */ + host->ios.bus_width = MMC_BUS_WIDTH_1; + + if (host->caps & MMC_CAP_4_BIT_DATA) { struct mmc_command cmd; cmd.opcode = SD_APP_SET_BUS_WIDTH; cmd.arg = SD_BUS_WIDTH_4; @@ -453,11 +454,11 @@ static void mmc_deselect_cards(struct mm static inline void mmc_delay(unsigned int ms) { - if (ms < HZ / 1000) { - yield(); + if (ms < 1000 / HZ) { + cond_resched(); mdelay(ms); } else { - msleep_interruptible (ms); + msleep(ms); } } @@ -953,6 +954,137 @@ static void mmc_read_csds(struct mmc_hos } } +static void mmc_process_ext_csds(struct mmc_host *host) +{ + int err; + struct mmc_card *card; + + struct mmc_request mrq; + struct mmc_command cmd; + struct mmc_data data; + + struct scatterlist sg; + + /* + * As the ext_csd is so large and mostly unused, we don't store the + * raw block in mmc_card. + */ + u8 *ext_csd; + ext_csd = kmalloc(512, GFP_KERNEL); + if (!ext_csd) { + printk("%s: could not allocate a buffer to receive the ext_csd." + "mmc v4 cards will be treated as v3.\n", + mmc_hostname(host)); + return; + } + + list_for_each_entry(card, &host->cards, node) { + if (card->state & (MMC_STATE_DEAD|MMC_STATE_PRESENT)) + continue; + if (mmc_card_sd(card)) + continue; + if (card->csd.mmca_vsn < CSD_SPEC_VER_4) + continue; + + err = mmc_select_card(host, card); + if (err != MMC_ERR_NONE) { + mmc_card_set_dead(card); + continue; + } + + memset(&cmd, 0, sizeof(struct mmc_command)); + + cmd.opcode = MMC_SEND_EXT_CSD; + cmd.arg = 0; + cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; + + memset(&data, 0, sizeof(struct mmc_data)); + + mmc_set_data_timeout(&data, card, 0); + + data.blksz = 512; + data.blocks = 1; + data.flags = MMC_DATA_READ; + data.sg = &sg; + data.sg_len = 1; + + memset(&mrq, 0, sizeof(struct mmc_request)); + + mrq.cmd = &cmd; + mrq.data = &data; + + sg_init_one(&sg, ext_csd, 512); + + mmc_wait_for_req(host, &mrq); + + if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE) { + mmc_card_set_dead(card); + continue; + } + + switch (ext_csd[EXT_CSD_CARD_TYPE]) { + case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26: + card->ext_csd.hs_max_dtr = 52000000; + break; + case EXT_CSD_CARD_TYPE_26: + card->ext_csd.hs_max_dtr = 26000000; + break; + default: + /* MMC v4 spec says this cannot happen */ + printk("%s: card is mmc v4 but doesn't support " + "any high-speed modes.\n", + mmc_hostname(card->host)); + mmc_card_set_bad(card); + continue; + } + + /* Activate highspeed support. */ + cmd.opcode = MMC_SWITCH; + cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | + (EXT_CSD_HS_TIMING << 16) | + (1 << 8) | + EXT_CSD_CMD_SET_NORMAL; + cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; + + err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES); + if (err != MMC_ERR_NONE) { + printk("%s: failed to switch card to mmc v4 " + "high-speed mode.\n", + mmc_hostname(card->host)); + continue; + } + + mmc_card_set_highspeed(card); + + /* Check for host support for wide-bus modes. */ + if (!(host->caps & MMC_CAP_4_BIT_DATA)) { + continue; + } + + /* Activate 4-bit support. */ + cmd.opcode = MMC_SWITCH; + cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | + (EXT_CSD_BUS_WIDTH << 16) | + (EXT_CSD_BUS_WIDTH_4 << 8) | + EXT_CSD_CMD_SET_NORMAL; + cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; + + err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES); + if (err != MMC_ERR_NONE) { + printk("%s: failed to switch card to " + "mmc v4 4-bit bus mode.\n", + mmc_hostname(card->host)); + continue; + } + + host->ios.bus_width = MMC_BUS_WIDTH_4; + } + + kfree(ext_csd); + + mmc_deselect_cards(host); +} + static void mmc_read_scrs(struct mmc_host *host) { int err; @@ -1025,15 +1157,133 @@ static void mmc_read_scrs(struct mmc_hos mmc_deselect_cards(host); } +static void mmc_read_switch_caps(struct mmc_host *host) +{ + int err; + struct mmc_card *card; + struct mmc_request mrq; + struct mmc_command cmd; + struct mmc_data data; + unsigned char *status; + struct scatterlist sg; + + status = kmalloc(64, GFP_KERNEL); + if (!status) { + printk(KERN_WARNING "%s: Unable to allocate buffer for " + "reading switch capabilities.\n", + mmc_hostname(host)); + return; + } + + list_for_each_entry(card, &host->cards, node) { + if (card->state & (MMC_STATE_DEAD|MMC_STATE_PRESENT)) + continue; + if (!mmc_card_sd(card)) + continue; + if (card->scr.sda_vsn < SCR_SPEC_VER_1) + continue; + + err = mmc_select_card(host, card); + if (err != MMC_ERR_NONE) { + mmc_card_set_dead(card); + continue; + } + + memset(&cmd, 0, sizeof(struct mmc_command)); + + cmd.opcode = SD_SWITCH; + cmd.arg = 0x00FFFFF1; + cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; + + memset(&data, 0, sizeof(struct mmc_data)); + + mmc_set_data_timeout(&data, card, 0); + + data.blksz = 64; + data.blocks = 1; + data.flags = MMC_DATA_READ; + data.sg = &sg; + data.sg_len = 1; + + memset(&mrq, 0, sizeof(struct mmc_request)); + + mrq.cmd = &cmd; + mrq.data = &data; + + sg_init_one(&sg, status, 64); + + mmc_wait_for_req(host, &mrq); + + if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE) { + mmc_card_set_dead(card); + continue; + } + + if (status[13] & 0x02) + card->sw_caps.hs_max_dtr = 50000000; + + memset(&cmd, 0, sizeof(struct mmc_command)); + + cmd.opcode = SD_SWITCH; + cmd.arg = 0x80FFFFF1; + cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; + + memset(&data, 0, sizeof(struct mmc_data)); + + mmc_set_data_timeout(&data, card, 0); + + data.blksz = 64; + data.blocks = 1; + data.flags = MMC_DATA_READ; + data.sg = &sg; + data.sg_len = 1; + + memset(&mrq, 0, sizeof(struct mmc_request)); + + mrq.cmd = &cmd; + mrq.data = &data; + + sg_init_one(&sg, status, 64); + + mmc_wait_for_req(host, &mrq); + + if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE) { + mmc_card_set_dead(card); + continue; + } + + if ((status[16] & 0xF) != 1) { + printk(KERN_WARNING "%s: Problem switching card " + "into high-speed mode!\n", + mmc_hostname(host)); + continue; + } + + mmc_card_set_highspeed(card); + } + + kfree(status); + + mmc_deselect_cards(host); +} + static unsigned int mmc_calculate_clock(struct mmc_host *host) { struct mmc_card *card; unsigned int max_dtr = host->f_max; list_for_each_entry(card, &host->cards, node) - if (!mmc_card_dead(card) && !mmc_card_bad(card) && - max_dtr > card->csd.max_dtr) - max_dtr = card->csd.max_dtr; + if (!mmc_card_dead(card) && !mmc_card_bad(card)) { + if (mmc_card_highspeed(card) && mmc_card_sd(card)) { + if (max_dtr > card->sw_caps.hs_max_dtr) + max_dtr = card->sw_caps.hs_max_dtr; + } else if (mmc_card_highspeed(card) && !mmc_card_sd(card)) { + if (max_dtr > card->ext_csd.hs_max_dtr) + max_dtr = card->ext_csd.hs_max_dtr; + } else if (max_dtr > card->csd.max_dtr) { + max_dtr = card->csd.max_dtr; + } + } pr_debug("%s: selected %d.%03dMHz transfer rate\n", mmc_hostname(host), @@ -1150,8 +1401,11 @@ static void mmc_setup(struct mmc_host *h mmc_read_csds(host); - if (host->mode == MMC_MODE_SD) + if (host->mode == MMC_MODE_SD) { mmc_read_scrs(host); + mmc_read_switch_caps(host); + } else + mmc_process_ext_csds(host); } --- a/drivers/mmc/mmc_block.c +++ b/drivers/mmc/mmc_block.c @@ -83,7 +83,6 @@ static void mmc_blk_put(struct mmc_blk_d md->usage--; if (md->usage == 0) { put_disk(md->disk); - mmc_cleanup_queue(&md->queue); kfree(md); } mutex_unlock(&open_lock); @@ -225,10 +224,10 @@ static int mmc_blk_issue_rq(struct mmc_q struct mmc_blk_data *md = mq->data; struct mmc_card *card = md->queue.card; struct mmc_blk_request brq; - int ret; + int ret = 1; if (mmc_card_claim_host(card)) - goto cmd_err; + goto flush_queue; do { struct mmc_command cmd; @@ -345,8 +344,6 @@ static int mmc_blk_issue_rq(struct mmc_q return 1; cmd_err: - ret = 1; - /* * If this is an SD card and we're writing, we can first * mark the known good sectors as ok. @@ -380,6 +377,7 @@ static int mmc_blk_issue_rq(struct mmc_q mmc_card_release_host(card); +flush_queue: spin_lock_irq(&md->lock); while (ret) { ret = end_that_request_chunk(req, 0, @@ -553,12 +551,11 @@ static void mmc_blk_remove(struct mmc_ca if (md) { int devidx; + /* Stop new requests from getting into the queue */ del_gendisk(md->disk); - /* - * I think this is needed. - */ - md->disk->queue = NULL; + /* Then flush out any already in there */ + mmc_cleanup_queue(&md->queue); devidx = md->disk->first_minor >> MMC_SHIFT; __clear_bit(devidx, dev_use); --- a/drivers/mmc/mmc_queue.c +++ b/drivers/mmc/mmc_queue.c @@ -10,13 +10,13 @@ */ #include #include +#include #include #include #include "mmc_queue.h" -#define MMC_QUEUE_EXIT (1 << 0) -#define MMC_QUEUE_SUSPENDED (1 << 1) +#define MMC_QUEUE_SUSPENDED (1 << 0) /* * Prepare a MMC request. Essentially, this means passing the @@ -59,7 +59,6 @@ static int mmc_queue_thread(void *d) { struct mmc_queue *mq = d; struct request_queue *q = mq->queue; - DECLARE_WAITQUEUE(wait, current); /* * Set iothread to ensure that we aren't put to sleep by @@ -67,12 +66,7 @@ static int mmc_queue_thread(void *d) */ current->flags |= PF_MEMALLOC|PF_NOFREEZE; - daemonize("mmcqd"); - - complete(&mq->thread_complete); - down(&mq->thread_sem); - add_wait_queue(&mq->thread_wq, &wait); do { struct request *req = NULL; @@ -84,7 +78,7 @@ static int mmc_queue_thread(void *d) spin_unlock_irq(q->queue_lock); if (!req) { - if (mq->flags & MMC_QUEUE_EXIT) + if (kthread_should_stop()) break; up(&mq->thread_sem); schedule(); @@ -95,10 +89,8 @@ static int mmc_queue_thread(void *d) mq->issue_fn(mq, req); } while (1); - remove_wait_queue(&mq->thread_wq, &wait); up(&mq->thread_sem); - complete_and_exit(&mq->thread_complete, 0); return 0; } @@ -111,9 +103,22 @@ static int mmc_queue_thread(void *d) static void mmc_request(request_queue_t *q) { struct mmc_queue *mq = q->queuedata; + struct request *req; + int ret; + + if (!mq) { + printk(KERN_ERR "MMC: killing requests for dead queue\n"); + while ((req = elv_next_request(q)) != NULL) { + do { + ret = end_that_request_chunk(req, 0, + req->current_nr_sectors << 9); + } while (ret); + } + return; + } if (!mq->req) - wake_up(&mq->thread_wq); + wake_up_process(mq->thread); } /** @@ -152,36 +157,40 @@ int mmc_init_queue(struct mmc_queue *mq, GFP_KERNEL); if (!mq->sg) { ret = -ENOMEM; - goto cleanup; + goto cleanup_queue; } - init_completion(&mq->thread_complete); - init_waitqueue_head(&mq->thread_wq); init_MUTEX(&mq->thread_sem); - ret = kernel_thread(mmc_queue_thread, mq, CLONE_KERNEL); - if (ret >= 0) { - wait_for_completion(&mq->thread_complete); - init_completion(&mq->thread_complete); - ret = 0; - goto out; + mq->thread = kthread_run(mmc_queue_thread, mq, "mmcqd"); + if (IS_ERR(mq->thread)) { + ret = PTR_ERR(mq->thread); + goto free_sg; } - cleanup: + return 0; + + free_sg: kfree(mq->sg); mq->sg = NULL; - + cleanup_queue: blk_cleanup_queue(mq->queue); - out: return ret; } EXPORT_SYMBOL(mmc_init_queue); void mmc_cleanup_queue(struct mmc_queue *mq) { - mq->flags |= MMC_QUEUE_EXIT; - wake_up(&mq->thread_wq); - wait_for_completion(&mq->thread_complete); + request_queue_t *q = mq->queue; + unsigned long flags; + + /* Mark that we should start throwing out stragglers */ + spin_lock_irqsave(q->queue_lock, flags); + q->queuedata = NULL; + spin_unlock_irqrestore(q->queue_lock, flags); + + /* Then terminate our worker thread */ + kthread_stop(mq->thread); kfree(mq->sg); mq->sg = NULL; --- a/drivers/mmc/mmc_queue.h +++ b/drivers/mmc/mmc_queue.h @@ -6,8 +6,7 @@ struct task_struct; struct mmc_queue { struct mmc_card *card; - struct completion thread_complete; - wait_queue_head_t thread_wq; + struct task_struct *thread; struct semaphore thread_sem; unsigned int flags; struct request *req; --- a/drivers/mmc/mmci.c +++ b/drivers/mmc/mmci.c @@ -443,7 +443,7 @@ static void mmci_set_ios(struct mmc_host } } -static struct mmc_host_ops mmci_ops = { +static const struct mmc_host_ops mmci_ops = { .request = mmci_request, .set_ios = mmci_set_ios, }; --- a/drivers/mmc/pxamci.c +++ b/drivers/mmc/pxamci.c @@ -393,7 +393,7 @@ static void pxamci_set_ios(struct mmc_ho host->clkrt, host->cmdat); } -static struct mmc_host_ops pxamci_ops = { +static const struct mmc_host_ops pxamci_ops = { .request = pxamci_request, .get_ro = pxamci_get_ro, .set_ios = pxamci_set_ios, --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -616,6 +616,7 @@ static void sdhci_finish_command(struct static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) { int div; + u8 ctrl; u16 clk; unsigned long timeout; @@ -624,6 +625,13 @@ static void sdhci_set_clock(struct sdhci writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL); + ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL); + if (clock > 25000000) + ctrl |= SDHCI_CTRL_HISPD; + else + ctrl &= ~SDHCI_CTRL_HISPD; + writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL); + if (clock == 0) goto out; @@ -784,7 +792,7 @@ static int sdhci_get_ro(struct mmc_host return !(present & SDHCI_WRITE_PROTECT); } -static struct mmc_host_ops sdhci_ops = { +static const struct mmc_host_ops sdhci_ops = { .request = sdhci_request, .set_ios = sdhci_set_ios, .get_ro = sdhci_get_ro, @@ -1291,6 +1299,13 @@ static int __devinit sdhci_probe_slot(st else if (caps & SDHCI_CAN_VDD_180) mmc->ocr_avail |= MMC_VDD_17_18|MMC_VDD_18_19; + if ((host->max_clk > 25000000) && !(caps & SDHCI_CAN_DO_HISPD)) { + printk(KERN_ERR "%s: Controller reports > 25 MHz base clock," + " but no high speed support.\n", + host->slot_descr); + mmc->f_max = 25000000; + } + if (mmc->ocr_avail == 0) { printk(KERN_ERR "%s: Hardware doesn't report any " "support voltages.\n", host->slot_descr); --- a/drivers/mmc/sdhci.h +++ b/drivers/mmc/sdhci.h @@ -71,6 +71,7 @@ #define SDHCI_HOST_CONTROL 0x28 #define SDHCI_CTRL_LED 0x01 #define SDHCI_CTRL_4BITBUS 0x02 +#define SDHCI_CTRL_HISPD 0x04 #define SDHCI_POWER_CONTROL 0x29 #define SDHCI_POWER_ON 0x01 @@ -138,6 +139,7 @@ #define SDHCI_CLOCK_BASE_SHIFT 8 #define SDHCI_MAX_BLOCK_MASK 0x00030000 #define SDHCI_MAX_BLOCK_SHIFT 16 +#define SDHCI_CAN_DO_HISPD 0x00200000 #define SDHCI_CAN_DO_DMA 0x00400000 #define SDHCI_CAN_VDD_330 0x01000000 #define SDHCI_CAN_VDD_300 0x02000000 --- a/drivers/mmc/wbsd.c +++ b/drivers/mmc/wbsd.c @@ -1021,7 +1021,7 @@ static int wbsd_get_ro(struct mmc_host * return csr & WBSD_WRPT; } -static struct mmc_host_ops wbsd_ops = { +static const struct mmc_host_ops wbsd_ops = { .request = wbsd_request, .set_ios = wbsd_set_ios, .get_ro = wbsd_get_ro, --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -39,6 +39,10 @@ struct mmc_csd { write_misalign:1; }; +struct mmc_ext_csd { + unsigned int hs_max_dtr; +}; + struct sd_scr { unsigned char sda_vsn; unsigned char bus_widths; @@ -46,6 +50,10 @@ struct sd_scr { #define SD_SCR_BUS_WIDTH_4 (1<<2) }; +struct sd_switch_caps { + unsigned int hs_max_dtr; +}; + struct mmc_host; /* @@ -62,12 +70,15 @@ struct mmc_card { #define MMC_STATE_BAD (1<<2) /* unrecognised device */ #define MMC_STATE_SDCARD (1<<3) /* is an SD card */ #define MMC_STATE_READONLY (1<<4) /* card is read-only */ +#define MMC_STATE_HIGHSPEED (1<<5) /* card is in high speed mode */ u32 raw_cid[4]; /* raw card CID */ u32 raw_csd[4]; /* raw card CSD */ u32 raw_scr[2]; /* raw card SCR */ struct mmc_cid cid; /* card identification */ struct mmc_csd csd; /* card specific */ + struct mmc_ext_csd ext_csd; /* mmc v4 extended card specific */ struct sd_scr scr; /* extra SD information */ + struct sd_switch_caps sw_caps; /* switch (CMD6) caps */ }; #define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT) @@ -75,12 +86,14 @@ struct mmc_card { #define mmc_card_bad(c) ((c)->state & MMC_STATE_BAD) #define mmc_card_sd(c) ((c)->state & MMC_STATE_SDCARD) #define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY) +#define mmc_card_highspeed(c) ((c)->state & MMC_STATE_HIGHSPEED) #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT) #define mmc_card_set_dead(c) ((c)->state |= MMC_STATE_DEAD) #define mmc_card_set_bad(c) ((c)->state |= MMC_STATE_BAD) #define mmc_card_set_sd(c) ((c)->state |= MMC_STATE_SDCARD) #define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY) +#define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED) #define mmc_card_name(c) ((c)->cid.prod_name) #define mmc_card_id(c) ((c)->dev.bus_id) --- a/include/linux/mmc/protocol.h +++ b/include/linux/mmc/protocol.h @@ -25,14 +25,16 @@ #ifndef MMC_MMC_PROTOCOL_H #define MMC_MMC_PROTOCOL_H -/* Standard MMC commands (3.1) type argument response */ +/* Standard MMC commands (4.1) type argument response */ /* class 1 */ #define MMC_GO_IDLE_STATE 0 /* bc */ #define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */ #define MMC_ALL_SEND_CID 2 /* bcr R2 */ #define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */ #define MMC_SET_DSR 4 /* bc [31:16] RCA */ +#define MMC_SWITCH 6 /* ac [31:0] See below R1b */ #define MMC_SELECT_CARD 7 /* ac [31:16] RCA R1 */ +#define MMC_SEND_EXT_CSD 8 /* adtc R1 */ #define MMC_SEND_CSD 9 /* ac [31:16] RCA R2 */ #define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */ #define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */ @@ -80,6 +82,7 @@ /* class 8 */ /* This is basically the same command as for MMC with some quirks. */ #define SD_SEND_RELATIVE_ADDR 3 /* bcr R6 */ +#define SD_SWITCH 6 /* adtc [31:0] See below R1 */ /* Application commands */ #define SD_APP_SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */ @@ -88,6 +91,30 @@ #define SD_APP_SEND_SCR 51 /* adtc R1 */ /* + * MMC_SWITCH argument format: + * + * [31:26] Always 0 + * [25:24] Access Mode + * [23:16] Location of target Byte in EXT_CSD + * [15:08] Value Byte + * [07:03] Always 0 + * [02:00] Command Set + */ + +/* + * SD_SWITCH argument format: + * + * [31] Check (0) or switch (1) + * [30:24] Reserved (0) + * [23:20] Function group 6 + * [19:16] Function group 5 + * [15:12] Function group 4 + * [11:8] Function group 3 + * [7:4] Function group 2 + * [3:0] Function group 1 + */ + +/* MMC status in R1 Type e : error bit @@ -230,13 +257,54 @@ struct _mmc_csd { #define CSD_STRUCT_VER_1_0 0 /* Valid for system specification 1.0 - 1.2 */ #define CSD_STRUCT_VER_1_1 1 /* Valid for system specification 1.4 - 2.2 */ -#define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 */ +#define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 - 3.2 - 3.31 - 4.0 - 4.1 */ +#define CSD_STRUCT_EXT_CSD 3 /* Version is coded in CSD_STRUCTURE in EXT_CSD */ #define CSD_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.2 */ #define CSD_SPEC_VER_1 1 /* Implements system specification 1.4 */ #define CSD_SPEC_VER_2 2 /* Implements system specification 2.0 - 2.2 */ -#define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 */ +#define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 - 3.2 - 3.31 */ +#define CSD_SPEC_VER_4 4 /* Implements system specification 4.0 - 4.1 */ + +/* + * EXT_CSD fields + */ + +#define EXT_CSD_BUS_WIDTH 183 /* R/W */ +#define EXT_CSD_HS_TIMING 185 /* R/W */ +#define EXT_CSD_CARD_TYPE 196 /* RO */ + +/* + * EXT_CSD field definitions + */ + +#define EXT_CSD_CMD_SET_NORMAL (1<<0) +#define EXT_CSD_CMD_SET_SECURE (1<<1) +#define EXT_CSD_CMD_SET_CPSECURE (1<<2) + +#define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */ +#define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */ + +#define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */ +#define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */ +#define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */ + +/* + * MMC_SWITCH access modes + */ + +#define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */ +#define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits which are 1 in value */ +#define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits which are 1 in value */ +#define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target to value */ + +/* + * SCR field definitions + */ +#define SCR_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.01 */ +#define SCR_SPEC_VER_1 1 /* Implements system specification 1.10 */ +#define SCR_SPEC_VER_2 2 /* Implements system specification 2.00 */ /* * SD bus widths