diff options
| -rw-r--r-- | drivers/mmc/card/mmc_test.c | 10 | ||||
| -rw-r--r-- | drivers/mmc/core/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/mmc/core/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mmc/core/bus.c | 12 | ||||
| -rw-r--r-- | drivers/mmc/core/core.c | 20 | ||||
| -rw-r--r-- | drivers/mmc/core/lock.c | 193 | ||||
| -rw-r--r-- | drivers/mmc/core/lock.h | 41 | ||||
| -rw-r--r-- | drivers/mmc/core/mmc.c | 16 | ||||
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 117 | ||||
| -rw-r--r-- | drivers/mmc/core/mmc_ops.h | 3 | ||||
| -rw-r--r-- | drivers/mmc/core/sd.c | 20 | ||||
| -rw-r--r-- | drivers/mmc/host/Kconfig | 18 | ||||
| -rw-r--r-- | drivers/mmc/host/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mmc/host/at91_mci.c | 2 | ||||
| -rw-r--r-- | drivers/mmc/host/imxmmc.c | 9 | ||||
| -rw-r--r-- | drivers/mmc/host/mmc_spi.c | 28 | ||||
| -rw-r--r-- | drivers/mmc/host/pxamci.c | 9 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci-pci.c | 699 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 541 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 79 | ||||
| -rw-r--r-- | include/linux/mmc/card.h | 3 | ||||
| -rw-r--r-- | include/linux/mmc/host.h | 11 | ||||
| -rw-r--r-- | include/linux/mmc/mmc.h | 9 | ||||
| -rw-r--r-- | include/linux/pci_ids.h | 1 | ||||
| -rw-r--r-- | include/linux/spi/mmc_spi.h | 9 |
25 files changed, 1406 insertions, 458 deletions
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c index ffadee549a41..371d922d9ee2 100644 --- a/drivers/mmc/card/mmc_test.c +++ b/drivers/mmc/card/mmc_test.c @@ -743,7 +743,7 @@ static const struct mmc_test_case mmc_test_cases[] = { static struct mutex mmc_test_lock; -static void mmc_test_run(struct mmc_test_card *test) +static void mmc_test_run(struct mmc_test_card *test, int testcase) { int i, ret; @@ -753,6 +753,9 @@ static void mmc_test_run(struct mmc_test_card *test) mmc_claim_host(test->card->host); for (i = 0;i < ARRAY_SIZE(mmc_test_cases);i++) { + if (testcase && ((i + 1) != testcase)) + continue; + printk(KERN_INFO "%s: Test case %d. %s...\n", mmc_hostname(test->card->host), i + 1, mmc_test_cases[i].name); @@ -824,9 +827,12 @@ static ssize_t mmc_test_store(struct device *dev, { struct mmc_card *card; struct mmc_test_card *test; + int testcase; card = container_of(dev, struct mmc_card, dev); + testcase = simple_strtol(buf, NULL, 10); + test = kzalloc(sizeof(struct mmc_test_card), GFP_KERNEL); if (!test) return -ENOMEM; @@ -836,7 +842,7 @@ static ssize_t mmc_test_store(struct device *dev, test->buffer = kzalloc(BUFFER_SIZE, GFP_KERNEL); if (test->buffer) { mutex_lock(&mmc_test_lock); - mmc_test_run(test); + mmc_test_run(test, testcase); mutex_unlock(&mmc_test_lock); } diff --git a/drivers/mmc/core/Kconfig b/drivers/mmc/core/Kconfig index ab37a6d9d32a..f0ae75e64a48 100644 --- a/drivers/mmc/core/Kconfig +++ b/drivers/mmc/core/Kconfig @@ -14,3 +14,15 @@ config MMC_UNSAFE_RESUME This option is usually just for embedded systems which use a MMC/SD card for rootfs. Most people should say N here. +config MMC_PASSWORDS + boolean "MMC card lock/unlock passwords (EXPERIMENTAL)" + depends on EXPERIMENTAL + select KEYS + help + Say Y here to enable the use of passwords to lock and unlock + MMC cards. This uses the access key retention support, using + request_key to look up the key associated with each card. + + For example, if you have an MMC card that was locked using + Symbian OS on your cell phone, you won't be able to read it + on Linux without this support. diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile index 19a1a254a0c5..7f91545a9464 100644 --- a/drivers/mmc/core/Makefile +++ b/drivers/mmc/core/Makefile @@ -11,4 +11,5 @@ mmc_core-y := core.o bus.o host.o \ mmc.o mmc_ops.o sd.o sd_ops.o \ sdio.o sdio_ops.o sdio_bus.o \ sdio_cis.o sdio_io.o sdio_irq.o +mmc_core-$(CONFIG_MMC_PASSWORDS) += lock.o diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index fd95b18e988b..f36edd0dd9fb 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -50,9 +50,21 @@ static struct device_attribute mmc_dev_attrs[] = { * This currently matches any MMC driver to any MMC card - drivers * themselves make the decision whether to drive this card in their * probe method. + * + * We also fail for all locked cards; drivers expect to be able to do block + * I/O still on probe(), which is not possible while the card is locked. + * Device probing must be triggered sometime later to make the card available + * to the block driver. */ static int mmc_bus_match(struct device *dev, struct device_driver *drv) { + struct mmc_card *card = dev_to_mmc_card(dev); + + if (mmc_card_locked(card)) { + dev_dbg(&card->dev, "card is locked; binding is deferred\n"); + return 0; + } + return 1; } diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 01ced4c5a61d..0d0fdeea3371 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -30,6 +30,7 @@ #include "bus.h" #include "host.h" #include "sdio_bus.h" +#include "lock.h" #include "mmc_ops.h" #include "sd_ops.h" @@ -638,6 +639,9 @@ void mmc_rescan(struct work_struct *work) */ mmc_bus_put(host); + if (host->ops->get_cd && host->ops->get_cd(host) == 0) + goto out; + mmc_claim_host(host); mmc_power_up(host); @@ -652,7 +656,7 @@ void mmc_rescan(struct work_struct *work) if (!err) { if (mmc_attach_sdio(host, ocr)) mmc_power_off(host); - return; + goto out; } /* @@ -662,7 +666,7 @@ void mmc_rescan(struct work_struct *work) if (!err) { if (mmc_attach_sd(host, ocr)) mmc_power_off(host); - return; + goto out; } /* @@ -672,7 +676,7 @@ void mmc_rescan(struct work_struct *work) if (!err) { if (mmc_attach_mmc(host, ocr)) mmc_power_off(host); - return; + goto out; } mmc_release_host(host); @@ -683,6 +687,9 @@ void mmc_rescan(struct work_struct *work) mmc_bus_put(host); } +out: + if (host->caps & MMC_CAP_NEEDS_POLL) + mmc_schedule_delayed_work(&host->detect, HZ); } void mmc_start_host(struct mmc_host *host) @@ -798,8 +805,14 @@ static int __init mmc_init(void) if (ret) goto unregister_host_class; + ret = mmc_register_key_type(); + if (ret) + goto unregister_sdio; + return 0; +unregister_sdio: + sdio_unregister_bus(); unregister_host_class: mmc_unregister_host_class(); unregister_bus: @@ -812,6 +825,7 @@ destroy_workqueue: static void __exit mmc_exit(void) { + mmc_unregister_key_type(); sdio_unregister_bus(); mmc_unregister_host_class(); mmc_unregister_bus(); diff --git a/drivers/mmc/core/lock.c b/drivers/mmc/core/lock.c new file mode 100644 index 000000000000..cc22cc204962 --- /dev/null +++ b/drivers/mmc/core/lock.c @@ -0,0 +1,193 @@ +/* + * linux/drivers/mmc/core/lock.h + * + * Copyright 2006 Instituto Nokia de Tecnologia (INdT), All Rights Reserved. + * Copyright 2007 Pierre Ossman + * + * 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 + * published by the Free Software Foundation. + * + * MMC password key handling. + */ + +#include <linux/device.h> +#include <linux/key-type.h> +#include <linux/err.h> + +#include <linux/mmc/card.h> +#include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> + +#include "mmc_ops.h" +#include "lock.h" + +#define MMC_KEYLEN_MAXBYTES 32 + +#define dev_to_mmc_card(d) container_of(d, struct mmc_card, dev) + +static int mmc_key_instantiate(struct key *key, const void *data, size_t datalen) +{ + struct mmc_key_payload *mpayload; + int ret; + + ret = -EINVAL; + if (datalen <= 0 || datalen > MMC_KEYLEN_MAXBYTES || !data) { + pr_debug("Invalid data\n"); + goto error; + } + + ret = key_payload_reserve(key, datalen); + if (ret < 0) { + pr_debug("ret = %d\n", ret); + goto error; + } + + ret = -ENOMEM; + mpayload = kmalloc(sizeof(*mpayload) + datalen, GFP_KERNEL); + if (!mpayload) { + pr_debug("Unable to allocate mpayload structure\n"); + goto error; + } + mpayload->datalen = datalen; + memcpy(mpayload->data, data, datalen); + + rcu_assign_pointer(key->payload.data, mpayload); + + /* ret = 0 if there is no error */ + ret = 0; + +error: + return ret; +} + +static int mmc_key_match(const struct key *key, const void *description) +{ + return strcmp(key->description, description) == 0; +} + +/* + * dispose of the data dangling from the corpse of a mmc key + */ +static void mmc_key_destroy(struct key *key) +{ + struct mmc_key_payload *mpayload = key->payload.data; + + kfree(mpayload); +} + +static struct key_type mmc_key_type = { + .name = "mmc", + .def_datalen = MMC_KEYLEN_MAXBYTES, + .instantiate = mmc_key_instantiate, + .match = mmc_key_match, + .destroy = mmc_key_destroy, +}; + +int mmc_register_key_type(void) +{ + return register_key_type(&mmc_key_type); +} + +void mmc_unregister_key_type(void) +{ + unregister_key_type(&mmc_key_type); +} + +static ssize_t +mmc_lockable_show(struct device *dev, struct device_attribute *att, char *buf) +{ + struct mmc_card *card = dev_to_mmc_card(dev); + + return sprintf(buf, "%slocked\n", mmc_card_locked(card) ? "" : "un"); +} + +/* + * implement MMC password functions: force erase, remove password, change + * password, unlock card and assign password. + */ +static ssize_t +mmc_lockable_store(struct device *dev, struct device_attribute *att, + const char *data, size_t len) +{ + struct mmc_card *card = dev_to_mmc_card(dev); + int ret; + struct key *mmc_key; + + WARN_ON(card->type != MMC_TYPE_MMC); + WARN_ON(!(card->csd.cmdclass & CCC_LOCK_CARD)); + + if(card->type != MMC_TYPE_MMC) + return -EINVAL; + if(!(card->csd.cmdclass & CCC_LOCK_CARD)) + return -EINVAL; + + mmc_claim_host(card->host); + + ret = -EINVAL; + if (mmc_card_locked(card) && !strncmp(data, "erase", 5)) { + /* forced erase only works while card is locked */ + mmc_lock_unlock(card, NULL, MMC_LOCK_MODE_ERASE); + ret = len; + } else if (!mmc_card_locked(card) && !strncmp(data, "remove", 6)) { + /* remove password only works while card is unlocked */ + mmc_key = request_key(&mmc_key_type, "mmc:key", "remove"); + + if (!IS_ERR(mmc_key)) { + ret = mmc_lock_unlock(card, mmc_key, MMC_LOCK_MODE_CLR_PWD); + if (!ret) + ret = len; + } else + dev_dbg(&card->dev, "request_key returned error %ld\n", PTR_ERR(mmc_key)); + } else if (!mmc_card_locked(card) && ((!strncmp(data, "assign", 6)) || + (!strncmp(data, "change", 6)))) { + /* assign or change */ + if(!(strncmp(data, "assign", 6))) + mmc_key = request_key(&mmc_key_type, "mmc:key", "assign"); + else + mmc_key = request_key(&mmc_key_type, "mmc:key", "change"); + + if (!IS_ERR(mmc_key)) { + ret = mmc_lock_unlock(card, mmc_key, MMC_LOCK_MODE_SET_PWD); + if (!ret) + ret = len; + } else + dev_dbg(&card->dev, "request_key returned error %ld\n", PTR_ERR(mmc_key)); + } else if (mmc_card_locked(card) && !strncmp(data, "unlock", 6)) { + /* unlock */ + mmc_key = request_key(&mmc_key_type, "mmc:key", "unlock"); + if (!IS_ERR(mmc_key)) { + ret = mmc_lock_unlock(card, mmc_key, MMC_LOCK_MODE_UNLOCK); + if (ret) { + dev_dbg(&card->dev, "Wrong password\n"); + ret = -EINVAL; + } + else { + mmc_release_host(card->host); + device_release_driver(dev); + ret = device_attach(dev); + if(!ret) + return -EINVAL; + else + return len; + } + } else + dev_dbg(&card->dev, "request_key returned error %ld\n", PTR_ERR(mmc_key)); + } + + mmc_release_host(card->host); + return ret; +} + +static DEVICE_ATTR(lockable, S_IWUSR | S_IRUGO, + mmc_lockable_show, mmc_lockable_store); + +static struct attribute *mmc_lock_attrs[] = { + &dev_attr_lockable.attr, + NULL, +}; + +struct attribute_group mmc_lock_attr_group = { + .attrs = mmc_lock_attrs, +}; + diff --git a/drivers/mmc/core/lock.h b/drivers/mmc/core/lock.h new file mode 100644 index 000000000000..364139e510bc --- /dev/null +++ b/drivers/mmc/core/lock.h @@ -0,0 +1,41 @@ +/* + * linux/drivers/mmc/core/lock.h + * + * Copyright 2006 Instituto Nokia de Tecnologia (INdT), All Rights Reserved. + * Copyright 2007-2008 Pierre Ossman + * + * 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 + * published by the Free Software Foundation. + */ +#ifndef _MMC_CORE_LOCK_H +#define _MMC_CORE_LOCK_H + +#ifdef CONFIG_MMC_PASSWORDS + +/* core-internal data */ +struct mmc_key_payload { + struct rcu_head rcu; /* RCU destructor */ + unsigned short datalen; /* length of this data */ + char data[0]; /* actual data */ +}; + +extern struct attribute_group mmc_lock_attr_group; + +int mmc_register_key_type(void); +void mmc_unregister_key_type(void); + +#else + +static inline int mmc_register_key_type(void) +{ + return 0; +} + +static inline void mmc_unregister_key_type(void) +{ +} + +#endif + +#endif diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 3da29eef8f7d..97e982625ab3 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -18,6 +18,7 @@ #include "core.h" #include "bus.h" +#include "lock.h" #include "mmc_ops.h" static const unsigned int tran_exp[] = { @@ -278,6 +279,9 @@ static struct attribute_group mmc_std_attr_group = { static struct attribute_group *mmc_attr_groups[] = { &mmc_std_attr_group, +#ifdef CONFIG_MMC_PASSWORDS + &mmc_lock_attr_group, +#endif NULL, }; @@ -298,6 +302,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, int err; u32 cid[4]; unsigned int max_dtr; + u32 status; BUG_ON(!host); WARN_ON(!host->claimed); @@ -367,6 +372,15 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } + /* + * Check if card is locked. + */ + err = mmc_send_status(card, &status); + if (err) + goto free_card; + if (status & R1_CARD_IS_LOCKED) + mmc_card_set_locked(card); + if (!oldcard) { /* * Fetch CSD from card. @@ -509,7 +523,7 @@ static void mmc_suspend(struct mmc_host *host) mmc_claim_host(host); if (!mmc_host_is_spi(host)) mmc_deselect_cards(host); - host->card->state &= ~MMC_STATE_HIGHSPEED; + host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_LOCKED); mmc_release_host(host); } diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 64b05c6270f2..e6703e509cf6 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -2,6 +2,8 @@ * linux/drivers/mmc/core/mmc_ops.h * * Copyright 2006-2007 Pierre Ossman + * MMC password protection (C) 2006 Instituto Nokia de Tecnologia (INdT), + * 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 as published by @@ -11,12 +13,14 @@ #include <linux/types.h> #include <linux/scatterlist.h> +#include <linux/key.h> #include <linux/mmc/host.h> #include <linux/mmc/card.h> #include <linux/mmc/mmc.h> #include "core.h" +#include "lock.h" #include "mmc_ops.h" static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card) @@ -395,3 +399,116 @@ int mmc_send_status(struct mmc_card *card, u32 *status) return 0; } +#ifdef CONFIG_MMC_PASSWORDS + +int mmc_lock_unlock(struct mmc_card *card, struct key *key, int mode) +{ + struct mmc_request mrq; + struct mmc_command cmd; + struct mmc_data data; + struct scatterlist sg; + struct mmc_key_payload *mpayload; + unsigned long erase_timeout; + int err, data_size; + u8 *data_buf; + + mpayload = NULL; + data_size = 1; + if (!(mode & MMC_LOCK_MODE_ERASE)) { + mpayload = rcu_dereference(key->payload.data); + data_size = 2 + mpayload->datalen; + } + + data_buf = kzalloc(data_size, GFP_KERNEL); + if (!data_buf) + return -ENOMEM; + + data_buf[0] |= mode; + if (mode & MMC_LOCK_MODE_UNLOCK) + data_buf[0] &= ~MMC_LOCK_MODE_UNLOCK; + + if (!(mode & MMC_LOCK_MODE_ERASE)) { + data_buf[1] = mpayload->datalen; + memcpy(data_buf + 2, mpayload->data, mpayload->datalen); + } + + memset(&cmd, 0, sizeof(struct mmc_command)); + + cmd.opcode = MMC_SET_BLOCKLEN; + cmd.arg = data_size; + cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; + err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); + if (err) + goto out; + + memset(&cmd, 0, sizeof(struct mmc_command)); + + cmd.opcode = MMC_LOCK_UNLOCK; + cmd.arg = 0; + cmd.flags = MMC_RSP_R1B | MMC_CMD_ADTC; + + memset(&data, 0, sizeof(struct mmc_data)); + + data.blksz = data_size; + data.blocks = 1; + data.flags = MMC_DATA_WRITE; + data.sg = &sg; + data.sg_len = 1; + + mmc_set_data_timeout(&data, card); + + memset(&mrq, 0, sizeof(struct mmc_request)); + + mrq.cmd = &cmd; + mrq.data = &data; + + sg_init_one(&sg, data_buf, data_size); + mmc_wait_for_req(card->host, &mrq); + err = cmd.error; + if (err) + goto out; + err = data.error; + if (err) + goto out; + + memset(&cmd, 0, sizeof(struct mmc_command)); + + cmd.opcode = MMC_SEND_STATUS; + cmd.arg = card->rca << 16; + cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; + + /* set timeout for forced erase operation to 3 min. (see MMC spec) */ + erase_timeout = jiffies + 180 * HZ; + do { + /* we cannot use "retries" here because the + * R1_LOCK_UNLOCK_FAILED bit is cleared by subsequent reads to + * the status register, hiding the error condition */ + err = mmc_wait_for_cmd(card->host, &cmd, 0); + if (err) + break; + /* the other modes don't need timeout checking */ + if (!(mode & MMC_LOCK_MODE_ERASE)) + continue; + if (time_after(jiffies, erase_timeout)) { + dev_dbg(&card->dev, "forced erase timed out\n"); + err = -ETIMEDOUT; + break; + } + } while (!(cmd.resp[0] & R1_READY_FOR_DATA)); + if (cmd.resp[0] & R1_LOCK_UNLOCK_FAILED) { + dev_dbg(&card->dev, "LOCK_UNLOCK operation failed\n"); + err = -EIO; + } + + if (cmd.resp[0] & R1_CARD_IS_LOCKED) + mmc_card_set_locked(card); + else + card->state &= ~MMC_STATE_LOCKED; + +out: + kfree(data_buf); + + return err; +} + +#endif /* CONFIG_MMC_PASSWORDS */ diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h index 17854bf7cf0d..15cd1821c5e4 100644 --- a/drivers/mmc/core/mmc_ops.h +++ b/drivers/mmc/core/mmc_ops.h @@ -12,6 +12,8 @@ #ifndef _MMC_MMC_OPS_H #define _MMC_MMC_OPS_H +struct key; + int mmc_select_card(struct mmc_card *card); int mmc_deselect_cards(struct mmc_host *host); int mmc_go_idle(struct mmc_host *host); @@ -25,6 +27,7 @@ int mmc_send_status(struct mmc_card *card, u32 *status); int mmc_send_cid(struct mmc_host *host, u32 *cid); int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp); int mmc_spi_set_crc(struct mmc_host *host, int use_crc); +int mmc_lock_unlock(struct mmc_card *card, struct key *key, int mode); #endif diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index 7ef3b15c5e3d..c029f6e532d8 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -19,6 +19,7 @@ #include "core.h" #include "bus.h" +#include "lock.h" #include "mmc_ops.h" #include "sd_ops.h" @@ -316,6 +317,9 @@ static struct attribute_group sd_std_attr_group = { static struct attribute_group *sd_attr_groups[] = { &sd_std_attr_group, +#ifdef CONFIG_MMC_PASSWORDS + &mmc_lock_attr_group, +#endif NULL, }; @@ -336,6 +340,7 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, int err; u32 cid[4]; unsigned int max_dtr; + u32 status; BUG_ON(!host); WARN_ON(!host->claimed); @@ -413,6 +418,15 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } + /* + * Check if card is locked. + */ + err = mmc_send_status(card, &status); + if (err) + goto free_card; + if (status & R1_CARD_IS_LOCKED) + mmc_card_set_locked(card); + if (!oldcard) { /* * Fetch CSD from card. @@ -494,13 +508,13 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, * Check if read-only switch is active. */ if (!oldcard) { - if (!host->ops->get_ro) { + if (!host->ops->get_ro || host->ops->get_ro(host) < 0) { printk(KERN_WARNING "%s: host does not " "support reading read-only " "switch. assuming write-enable.\n", mmc_hostname(host)); } else { - if (host->ops->get_ro(host)) + if (host->ops->get_ro(host) > 0) mmc_card_set_readonly(card); } } @@ -571,7 +585,7 @@ static void mmc_sd_suspend(struct mmc_host *host) mmc_claim_host(host); if (!mmc_host_is_spi(host)) mmc_deselect_cards(host); - host->card->state &= ~MMC_STATE_HIGHSPEED; + host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_LOCKED); mmc_release_host(host); } diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index dead61754ad7..1bbea8556c4d 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -26,18 +26,30 @@ config MMC_PXA config MMC_SDHCI tristate "Secure Digital Host Controller Interface support" - depends on PCI help - This select the generic Secure Digital Host Controller Interface. + This selects the generic Secure Digital Host Controller Interface. It is used by manufacturers such as Texas Instruments(R), Ricoh(R) and Toshiba(R). Most controllers found in laptops are of this type. + + If you have a controller with this interface, say Y or M here. You + also need to enable an appropriate bus interface. + + If unsure, say N. + +config MMC_SDHCI_PCI + tristate "SDHCI support on PCI bus" + depends on MMC_SDHCI && PCI + help + This selects the PCI Secure Digital Host Controller Interface. + Most controllers found today are PCI devices. + If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_RICOH_MMC tristate "Ricoh MMC Controller Disabler (EXPERIMENTAL)" - depends on PCI && EXPERIMENTAL && MMC_SDHCI + depends on MMC_SDHCI_PCI help This selects the disabler for the Ricoh MMC Controller. This proprietary controller is unnecessary because the SDHCI driver diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index 3877c87e6da2..3027250b8555 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_MMC_ARMMMCI) += mmci.o obj-$(CONFIG_MMC_PXA) += pxamci.o obj-$(CONFIG_MMC_IMX) += imxmmc.o obj-$(CONFIG_MMC_SDHCI) += sdhci.o +obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o obj-$(CONFIG_MMC_RICOH_MMC) += ricoh_mmc.o obj-$(CONFIG_MMC_WBSD) += wbsd.o obj-$(CONFIG_MMC_AU1X) += au1xmmc.o diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c index 8979ad330a4d..140c2b87c6bb 100644 --- a/drivers/mmc/host/at91_mci.c +++ b/drivers/mmc/host/at91_mci.c @@ -797,7 +797,7 @@ static int at91_mci_get_ro(struct mmc_host *mmc) struct at91mci_host *host = mmc_priv(mmc); if (host->board->wp_pin) { - read_only = gpio_get_value(host->board->wp_pin); + read_only = !!gpio_get_value(host->board->wp_pin); printk(KERN_WARNING "%s: card is %s\n", mmc_hostname(mmc), (read_only ? "read-only" : "read-write") ); } diff --git a/drivers/mmc/host/imxmmc.c b/drivers/mmc/host/imxmmc.c index 95f33e87a99c..51676791c871 100644 --- a/drivers/mmc/host/imxmmc.c +++ b/drivers/mmc/host/imxmmc.c @@ -889,9 +889,12 @@ static int imxmci_get_ro(struct mmc_host *mmc) struct imxmci_host *host = mmc_priv(mmc); if (host->pdata && host->pdata->get_ro) - return host->pdata->get_ro(mmc_dev(mmc)); - /* Host doesn't support read only detection so assume writeable */ - return 0; + return !!host->pdata->get_ro(mmc_dev(mmc)); + /* + * Board doesn't support read only detection; let the mmc core + * decide what to do. + */ + return -ENOSYS; } diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index 35508584ac2a..85d98534b56e 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1126,16 +1126,28 @@ static int mmc_spi_get_ro(struct mmc_host *mmc) struct mmc_spi_host *host = mmc_priv(mmc); if (host->pdata && host->pdata->get_ro) - return host->pdata->get_ro(mmc->parent); - /* board doesn't support read only detection; assume writeable */ - return 0; + return !!host->pdata->get_ro(mmc->parent); + /* + * Board doesn't support read only detection; let the mmc core + * decide what to do. + */ + return -ENOSYS; } +static int mmc_spi_get_cd(struct mmc_host *mmc) +{ + struct mmc_spi_host *host = mmc_priv(mmc); + + if (host->pdata && host->pdata->get_cd) + return host->pdata->get_cd(mmc->parent); + return -ENOSYS; +} static const struct mmc_host_ops mmc_spi_ops = { .request = mmc_spi_request, .set_ios = mmc_spi_set_ios, .get_ro = mmc_spi_get_ro, + .get_cd = mmc_spi_get_cd, }; @@ -1319,17 +1331,23 @@ static int mmc_spi_probe(struct spi_device *spi) goto fail_glue_init; } + /* pass platform capabilities, if any */ + if (host->pdata) + mmc->caps |= host->pdata->caps; + status = mmc_add_host(mmc); if (status != 0) goto fail_add_host; - dev_info(&spi->dev, "SD/MMC host %s%s%s%s\n", + dev_info(&spi->dev, "SD/MMC host %s%s%s%s%s\n", mmc->class_dev.bus_id, host->dma_dev ? "" : ", no DMA", (host->pdata && host->pdata->get_ro) ? "" : ", no WP", (host->pdata && host->pdata->setpower) - ? "" : ", no poweroff"); + ? "" : ", no poweroff", + (mmc->caps & MMC_CAP_NEEDS_POLL) + ? ", cd polling" : ""); return 0; fail_add_host: diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index 65210fca37ed..b6056bdc76f5 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -361,9 +361,12 @@ static int pxamci_get_ro(struct mmc_host *mmc) struct pxamci_host *host = mmc_priv(mmc); if (host->pdata && host->pdata->get_ro) - return host->pdata->get_ro(mmc_dev(mmc)); - /* Host doesn't support read only detection so assume writeable */ - return 0; + return !!host->pdata->get_ro(mmc_dev(mmc)); + /* + * Board doesn't support read only detection; let the mmc core + * decide what to do. + */ + return -ENOSYS; } static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c new file mode 100644 index 000000000000..22aab6a607ce --- /dev/null +++ b/drivers/mmc/host/sdhci-pci.c @@ -0,0 +1,699 @@ +/* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface + * + * Copyright (C) 2005-2008 Pierre Ossman, 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 as published by + * the Free Software Foundation; either version 2 of the License, or (at + * your option) any later version. + * + * Thanks to the following companies for their support: + * + * - JMicron (hardware and technical support) + */ + +#include <linux/delay.h> +#include <linux/highmem.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> + +#include <linux/mmc/host.h> + +#include <asm/scatterlist.h> +#include <asm/io.h> + +#include "sdhci.h" + +/* + * PCI registers + */ + +#define PCI_SDHCI_IFPIO 0x00 +#define PCI_SDHCI_IFDMA 0x01 +#define PCI_SDHCI_IFVENDOR 0x02 + +#define PCI_SLOT_INFO 0x40 /* 8 bits */ +#define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7) +#define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07 + +#define MAX_SLOTS 8 + +struct sdhci_pci_chip; +struct sdhci_pci_slot; + +struct sdhci_pci_fixes { + unsigned int quirks; + + int (*probe)(struct sdhci_pci_chip*); + + int (*probe_slot)(struct sdhci_pci_slot*); + void (*remove_slot)(struct sdhci_pci_slot*, int); + + int (*suspend)(struct sdhci_pci_chip*, + pm_message_t); + int (*resume)(struct sdhci_pci_chip*); +}; + +struct sdhci_pci_slot { + struct sdhci_pci_chip *chip; + struct sdhci_host *host; + + int pci_bar; +}; + +struct sdhci_pci_chip { + struct pci_dev *pdev; + + unsigned int quirks; + const struct sdhci_pci_fixes *fixes; + + int num_slots; /* Slots on controller */ + struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */ +}; + + +/*****************************************************************************\ + * * + * Hardware specific quirk handling * + * * +\*****************************************************************************/ + +static int ricoh_probe(struct sdhci_pci_chip *chip) +{ + if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM) + chip->quirks |= SDHCI_QUIRK_CLOCK_BEFORE_RESET; + + if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG) + chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET; + + return 0; +} + +static const struct sdhci_pci_fixes sdhci_ricoh = { + .probe = ricoh_probe, + .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR, +}; + +static const struct sdhci_pci_fixes sdhci_ene_712 = { + .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | + SDHCI_QUIRK_BROKEN_DMA, +}; + +static const struct sdhci_pci_fixes sdhci_ene_714 = { + .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | + SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, +}; + +static int jmicron_pmos(struct sdhci_pci_chip *chip, int on) +{ + u8 scratch; + int ret; + + ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch); + if (ret) + return ret; + + /* + * Turn PMOS on [bit 0], set over current detection to 2.4 V + * [bit 1:2] and enable over current debouncing [bit 6]. + */ + if (on) + scratch |= 0x47; + else + scratch &= ~0x47; + + ret = pci_write_config_byte(chip->pdev, 0xAE, scratch); + if (ret) + return ret; + + return 0; +} + +static int jmicron_probe(struct sdhci_pci_chip *chip) +{ + int ret; + + /* + * JMicron chips can have two interfaces to the same hardware + * in order to work around limitations in Microsoft's driver. + * We need to make sure we only bind to one of them. + * + * This code assumes two things: + * + * 1. The PCI code adds subfunctions in order. + * + * 2. The MMC interface has a lower subfunction number + * than the SD interface. + */ + if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) { + struct pci_dev *sd_dev; + + sd_dev = NULL; + while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON, + PCI_DEVICE_ID_JMICRON_JMB38X_MMC, sd_dev)) != NULL) { + if ((PCI_SLOT(chip->pdev->devfn) == + PCI_SLOT(sd_dev->devfn)) && + (chip->pdev->bus == sd_dev->bus)) + break; + } + + if (sd_dev) { + pci_dev_put(sd_dev); + dev_info(&chip->pdev->dev, "Refusing to bind to " + "secondary interface.\n"); + return -ENODEV; + } + } + + /* + * JMicron chips need a bit of a nudge to enable the power + * output pins. + */ + ret = jmicron_pmos(chip, 1); + if (ret) { + dev_err(&chip->pdev->dev, "Failure enabling card power\n"); + return ret; + } + + return 0; +} + +static void jmicron_enable_mmc(struct sdhci_host *host, int on) +{ + u8 scratch; + + scratch = readb(host->ioaddr + 0xC0); + + if (on) + scratch |= 0x01; + else + scratch &= ~0x01; + + writeb(scratch, host->ioaddr + 0xC0); +} + +static int jmicron_probe_slot(struct sdhci_pci_slot *slot) +{ + /* + * The secondary interface requires a bit set to get the + * interrupts. + */ + if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) + jmicron_enable_mmc(slot->host, 1); + + return 0; +} + +static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead) +{ + if (dead) + return; + + if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) + jmicron_enable_mmc(slot->host, 0); +} + +static int jmicron_suspend(struct sdhci_pci_chip *chip, pm_message_t state) +{ + int i; + + if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) { + for (i = 0;i < chip->num_slots;i++) + jmicron_enable_mmc(chip->slots[i]->host, 0); + } + + return 0; +} + +static int jmicron_resume(struct sdhci_pci_chip *chip) +{ + int ret, i; + + if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) { + for (i = 0;i < chip->num_slots;i++) + jmicron_enable_mmc(chip->slots[i]->host, 1); + } + + ret = jmicron_pmos(chip, 1); + if (ret) { + dev_err(&chip->pdev->dev, "Failure enabling card power\n"); + return ret; + } + + return 0; +} + +static const struct sdhci_pci_fixes sdhci_jmicron = { + .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | + SDHCI_QUIRK_32BIT_DMA_SIZE | + SDHCI_QUIRK_RESET_AFTER_REQUEST, + + .probe = jmicron_probe, + + .probe_slot = jmicron_probe_slot, + .remove_slot = jmicron_remove_slot, + + .suspend = jmicron_suspend, + .resume = jmicron_resume, +}; + +static const struct pci_device_id pci_ids[] __devinitdata = { + { + .vendor = PCI_VENDOR_ID_RICOH, + .device = PCI_DEVICE_ID_RICOH_R5C822, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_ricoh, + }, + + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB712_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_ene_712, + }, + + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB712_SD_2, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_ene_712, + }, + + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB714_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_ene_714, + }, + + { + .vendor = PCI_VENDOR_ID_ENE, + .device = PCI_DEVICE_ID_ENE_CB714_SD_2, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_ene_714, + }, + + { + .vendor = PCI_VENDOR_ID_JMICRON, + .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_jmicron, + }, + + { + .vendor = PCI_VENDOR_ID_JMICRON, + .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_jmicron, + }, + + { /* Generic SD host controller */ + PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) + }, + + { /* end: all zeroes */ }, +}; + +MODULE_DEVICE_TABLE(pci, pci_ids); + +/*****************************************************************************\ + * * + * SDHCI core callbacks * + * * +\*****************************************************************************/ + +static int sdhci_pci_enable_dma(struct sdhci_host *host) +{ + struct sdhci_pci_slot *slot; + struct pci_dev *pdev; + int ret; + + slot = sdhci_priv(host); + pdev = slot->chip->pdev; + + if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) && + ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) && + (host->flags & SDHCI_USE_DMA)) { + dev_warn(&pdev->dev, "Will use DMA mode even though HW " + "doesn't fully claim to support it.\n"); + } + + ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + if (ret) + return ret; + + pci_set_master(pdev); + + return 0; +} + +static struct sdhci_ops sdhci_pci_ops = { + .enable_dma = sdhci_pci_enable_dma, +}; + +/*****************************************************************************\ + * * + * Suspend/resume * + * * +\*****************************************************************************/ + +#ifdef CONFIG_PM + +static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state) +{ + struct sdhci_pci_chip *chip; + struct sdhci_pci_slot *slot; + int i, ret; + + chip = pci_get_drvdata(pdev); + if (!chip) + return 0; + + for (i = 0;i < chip->num_slots;i++) { + slot = chip->slots[i]; + if (!slot) + continue; + + ret = sdhci_suspend_host(slot->host, state); + + if (ret) { + for (i--;i >= 0;i--) + sdhci_resume_host(chip->slots[i]->host); + return ret; + } + } + + if (chip->fixes && chip->fixes->suspend) { + ret = chip->fixes->suspend(chip, state); + if (ret) { + for (i = chip->num_slots - 1;i >= 0;i--) + sdhci_resume_host(chip->slots[i]->host); + return ret; + } + } + + pci_save_state(pdev); + pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); + pci_disable_device(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +static int sdhci_pci_resume (struct pci_dev *pdev) +{ + struct sdhci_pci_chip *chip; + struct sdhci_pci_slot *slot; + int i, ret; + + chip = pci_get_drvdata(pdev); + if (!chip) + return 0; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + ret = pci_enable_device(pdev); + if (ret) + return ret; + + if (chip->fixes && chip->fixes->resume) { + ret = chip->fixes->resume(chip); + if (ret) + return ret; + } + + for (i = 0;i < chip->num_slots;i++) { + slot = chip->slots[i]; + if (!slot) + continue; + + ret = sdhci_resume_host(slot->host); + if (ret) + return ret; + } + + return 0; +} + +#else /* CONFIG_PM */ + +#define sdhci_pci_suspend NULL +#define sdhci_pci_resume NULL + +#endif /* CONFIG_PM */ + +/*****************************************************************************\ + * * + * Device probing/removal * + * * +\*****************************************************************************/ + +static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( + struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar) +{ + struct sdhci_pci_slot *slot; + struct sdhci_host *host; + + resource_size_t addr; + + int ret; + + if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { + dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar); + return ERR_PTR(-ENODEV); + } + + if (pci_resource_len(pdev, bar) != 0x100) { + dev_err(&pdev->dev, "Invalid iomem size. You may " + "experience problems.\n"); + } + + if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { + dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n"); + return ERR_PTR(-ENODEV); + } + + if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) { + dev_err(&pdev->dev, "Unknown interface. Aborting.\n"); + return ERR_PTR(-ENODEV); + } + + host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot)); + if (IS_ERR(host)) { + ret = PTR_ERR(host); + goto unmap; + } + + slot = sdhci_priv(host); + + slot->chip = chip; + slot->host = host; + slot->pci_bar = bar; + + host->hw_name = "PCI"; + host->ops = &sdhci_pci_ops; + host->quirks = chip->quirks; + + host->irq = pdev->irq; + + ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc)); + if (ret) { + dev_err(&pdev->dev, "cannot request region\n"); + return ERR_PTR(ret); + } + + addr = pci_resource_start(pdev, bar); + host->ioaddr = ioremap_nocache(addr, pci_resource_len(pdev, bar)); + if (!host->ioaddr) { + dev_err(&pdev->dev, "failed to remap registers\n"); + goto release; + } + + if (chip->fixes && chip->fixes->probe_slot) { + ret = chip->fixes->probe_slot(slot); + if (ret) + goto unmap; + } + + ret = sdhci_add_host(host); + if (ret) + goto remove; + + return slot; + +remove: + if (chip->fixes && chip->fixes->remove_slot) + chip->fixes->remove_slot(slot, 0); + +unmap: + iounmap(host->ioaddr); + +release: + pci_release_region(pdev, bar); + sdhci_free_host(host); + + return ERR_PTR(ret); +} + +static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) +{ + int dead; + u32 scratch; + + dead = 0; + scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS); + if (scratch == (u32)-1) + dead = 1; + + sdhci_remove_host(slot->host, dead); + + if (slot->chip->fixes && slot->chip->fixes->remove_slot) + slot->chip->fixes->remove_slot(slot, dead); + + pci_release_region(slot->chip->pdev, slot->pci_bar); + + sdhci_free_host(slot->host); +} + +static int __devinit sdhci_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct sdhci_pci_chip *chip; + struct sdhci_pci_slot *slot; + + u8 slots, rev, first_bar; + int ret, i; + + BUG_ON(pdev == NULL); + BUG_ON(ent == NULL); + + pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev); + + dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n", + (int)pdev->vendor, (int)pdev->device, (int)rev); + + ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots); + if (ret) + return ret; + + slots = PCI_SLOT_INFO_SLOTS(slots) + 1; + dev_dbg(&pdev->dev, "found %d slot(s)\n", slots); + if (slots == 0) + return -ENODEV; + + BUG_ON(slots > MAX_SLOTS); + + ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar); + if (ret) + return ret; + + first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK; + + if (first_bar > 5) { + dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n"); + return -ENODEV; + } + + ret = pci_enable_device(pdev); + if (ret) + return ret; + + chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL); + if (!chip) { + ret = -ENOMEM; + goto err; + } + + chip->pdev = pdev; + chip->fixes = (const struct sdhci_pci_fixes*)ent->driver_data; + if (chip->fixes) + chip->quirks = chip->fixes->quirks; + chip->num_slots = slots; + + pci_set_drvdata(pdev, chip); + + if (chip->fixes && chip->fixes->probe) { + ret = chip->fixes->probe(chip); + if (ret) + goto free; + } + + for (i = 0;i < slots;i++) { + slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i); + if (IS_ERR(slot)) { + for (i--;i >= 0;i--) + sdhci_pci_remove_slot(chip->slots[i]); + ret = PTR_ERR(slot); + goto free; + } + + chip->slots[i] = slot; + } + + return 0; + +free: + pci_set_drvdata(pdev, NULL); + kfree(chip); + +err: + pci_disable_device(pdev); + return ret; +} + +static void __devexit sdhci_pci_remove(struct pci_dev *pdev) +{ + int i; + struct sdhci_pci_chip *chip; + + chip = pci_get_drvdata(pdev); + + if (chip) { + for (i = 0;i < chip->num_slots; i++) + sdhci_pci_remove_slot(chip->slots[i]); + + pci_set_drvdata(pdev, NULL); + kfree(chip); + } + + pci_disable_device(pdev); +} + +static struct pci_driver sdhci_driver = { + .name = "sdhci-pci", + .id_table = pci_ids, + .probe = sdhci_pci_probe, + .remove = __devexit_p(sdhci_pci_remove), + .suspend = sdhci_pci_suspend, + .resume = sdhci_pci_resume, +}; + +/*****************************************************************************\ + * * + * Driver init/exit * + * * +\*****************************************************************************/ + +static int __init sdhci_drv_init(void) +{ + return pci_register_driver(&sdhci_driver); +} + +static void __exit sdhci_drv_exit(void) +{ + pci_unregister_driver(&sdhci_driver); +} + +module_init(sdhci_drv_init); +module_exit(sdhci_drv_exit); + +MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>"); +MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 07c2048b230b..6441e449419e 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -15,7 +15,7 @@ #include <linux/delay.h> #include <linux/highmem.h> -#include <linux/pci.h> +#include <linux/io.h> #include <linux/dma-mapping.h> #include <linux/scatterlist.h> @@ -32,120 +32,6 @@ static unsigned int debug_quirks = 0; -/* - * Different quirks to handle when the hardware deviates from a strict - * interpretation of the SDHCI specification. - */ - -/* Controller doesn't honor resets unless we touch the clock register */ -#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) -/* Controller has bad caps bits, but really supports DMA */ -#define SDHCI_QUIRK_FORCE_DMA (1<<1) -/* Controller doesn't like to be reset when there is no card inserted. */ -#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) -/* Controller doesn't like clearing the power reg before a change */ -#define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) -/* Controller has flaky internal state so reset it on each ios change */ -#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) -/* Controller has an unusable DMA engine */ -#define SDHCI_QUIRK_BROKEN_DMA (1<<5) -/* Controller can only DMA from 32-bit aligned addresses */ -#define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<6) -/* Controller can only DMA chunk sizes that are a multiple of 32 bits */ -#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<7) -/* Controller needs to be reset after each request to stay stable */ -#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<8) - -static const struct pci_device_id pci_ids[] __devinitdata = { - { - .vendor = PCI_VENDOR_ID_RICOH, - .device = PCI_DEVICE_ID_RICOH_R5C822, - .subvendor = PCI_VENDOR_ID_IBM, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET | - SDHCI_QUIRK_FORCE_DMA, - }, - - { - .vendor = PCI_VENDOR_ID_RICOH, - .device = PCI_DEVICE_ID_RICOH_R5C822, - .subvendor = PCI_VENDOR_ID_SAMSUNG, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_FORCE_DMA | - SDHCI_QUIRK_NO_CARD_NO_RESET, - }, - - { - .vendor = PCI_VENDOR_ID_RICOH, - .device = PCI_DEVICE_ID_RICOH_R5C822, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_FORCE_DMA, - }, - - { - .vendor = PCI_VENDOR_ID_TI, - .device = PCI_DEVICE_ID_TI_XX21_XX11_SD, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_FORCE_DMA, - }, - - { - .vendor = PCI_VENDOR_ID_ENE, - .device = PCI_DEVICE_ID_ENE_CB712_SD, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | - SDHCI_QUIRK_BROKEN_DMA, - }, - - { - .vendor = PCI_VENDOR_ID_ENE, - .device = PCI_DEVICE_ID_ENE_CB712_SD_2, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | - SDHCI_QUIRK_BROKEN_DMA, - }, - - { - .vendor = PCI_VENDOR_ID_ENE, - .device = PCI_DEVICE_ID_ENE_CB714_SD, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | - SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, - }, - - { - .vendor = PCI_VENDOR_ID_ENE, - .device = PCI_DEVICE_ID_ENE_CB714_SD_2, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE | - SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS, - }, - - { - .vendor = PCI_VENDOR_ID_JMICRON, - .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - .driver_data = SDHCI_QUIRK_32BIT_DMA_ADDR | - SDHCI_QUIRK_32BIT_DMA_SIZE | - SDHCI_QUIRK_RESET_AFTER_REQUEST, - }, - - { /* Generic SD host controller */ - PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) - }, - - { /* end: all zeroes */ }, -}; - -MODULE_DEVICE_TABLE(pci, pci_ids); - static void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *); static void sdhci_finish_data(struct sdhci_host *); @@ -200,7 +86,7 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask) { unsigned long timeout; - if (host->chip->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { + if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) return; @@ -481,7 +367,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data) host->flags |= SDHCI_REQ_USE_DMA; if (unlikely((host->flags & SDHCI_REQ_USE_DMA) && - (host->chip->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) && + (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE) && ((data->blksz * data->blocks) & 0x3))) { DBG("Reverting to PIO because of transfer size (%d)\n", data->blksz * data->blocks); @@ -493,7 +379,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data) * translation to device address space. */ if (unlikely((host->flags & SDHCI_REQ_USE_DMA) && - (host->chip->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && + (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && (data->sg->offset & 0x3))) { DBG("Reverting to PIO because of bad alignment\n"); host->flags &= ~SDHCI_REQ_USE_DMA; @@ -502,11 +388,13 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data) if (host->flags & SDHCI_REQ_USE_DMA) { int count; - count = pci_map_sg(host->chip->pdev, data->sg, data->sg_len, - (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE); - BUG_ON(count != 1); + count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, + (data->flags & MMC_DATA_READ) ? + DMA_FROM_DEVICE : DMA_TO_DEVICE); + WARN_ON(count != 1); - writel(sg_dma_address(data->sg), host->ioaddr + SDHCI_DMA_ADDRESS); + writel(sg_dma_address(data->sg), + host->ioaddr + SDHCI_DMA_ADDRESS); } else { host->cur_sg = data->sg; host->num_sg = data->sg_len; @@ -545,7 +433,6 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host, static void sdhci_finish_data(struct sdhci_host *host) { struct mmc_data *data; - u16 blocks; BUG_ON(!host->data); @@ -553,25 +440,22 @@ static void sdhci_finish_data(struct sdhci_host *host) host->data = NULL; if (host->flags & SDHCI_REQ_USE_DMA) { - pci_unmap_sg(host->chip->pdev, data->sg, data->sg_len, - (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE); + dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, + (data->flags & MMC_DATA_READ) ? + DMA_FROM_DEVICE : DMA_TO_DEVICE); } /* - * Controller doesn't count down when in single block mode. + * The specification states that the block count register must + * be updated, but it does not specify at what point in the + * data flow. That makes the register entirely useless to read + * back so we have to assume that nothing made it to the card + * in the event of an error. */ - if (data->blocks == 1) - blocks = (data->error == 0) ? 0 : 1; + if (data->error) + data->bytes_xfered = 0; else - blocks = readw(host->ioaddr + SDHCI_BLOCK_COUNT); - data->bytes_xfered = data->blksz * (data->blocks - blocks); - - if (!data->error && blocks) { - printk(KERN_ERR "%s: Controller signalled completion even " - "though there were blocks left.\n", - mmc_hostname(host->mmc)); - data->error = -EIO; - } + data->bytes_xfered = data->blksz * data->blocks; if (data->stop) { /* @@ -753,7 +637,7 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) * Spec says that we should clear the power reg before setting * a new value. Some controllers don't seem to like this though. */ - if (!(host->chip->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) + if (!(host->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE)) writeb(0, host->ioaddr + SDHCI_POWER_CONTROL); pwr = SDHCI_POWER_ON; @@ -803,7 +687,8 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) host->mrq = mrq; - if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) { + if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT) + || (host->flags & SDHCI_DEVICE_DEAD)) { host->mrq->cmd->error = -ENOMEDIUM; tasklet_schedule(&host->finish_tasklet); } else @@ -823,6 +708,9 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) spin_lock_irqsave(&host->lock, flags); + if (host->flags & SDHCI_DEVICE_DEAD) + goto out; + /* * Reset the chip on each power off. * Should clear out any weird states. @@ -858,9 +746,10 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) * signalling timeout and CRC errors even on CMD0. Resetting * it on each ios seems to solve the problem. */ - if(host->chip->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) + if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); +out: mmiowb(); spin_unlock_irqrestore(&host->lock, flags); } @@ -875,7 +764,10 @@ static int sdhci_get_ro(struct mmc_host *mmc) spin_lock_irqsave(&host->lock, flags); - present = readl(host->ioaddr + SDHCI_PRESENT_STATE); + if (host->flags & SDHCI_DEVICE_DEAD) + present = 0; + else + present = readl(host->ioaddr + SDHCI_PRESENT_STATE); spin_unlock_irqrestore(&host->lock, flags); @@ -892,6 +784,9 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) spin_lock_irqsave(&host->lock, flags); + if (host->flags & SDHCI_DEVICE_DEAD) + goto out; + ier = readl(host->ioaddr + SDHCI_INT_ENABLE); ier &= ~SDHCI_INT_CARD_INT; @@ -901,6 +796,7 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) writel(ier, host->ioaddr + SDHCI_INT_ENABLE); writel(ier, host->ioaddr + SDHCI_SIGNAL_ENABLE); +out: mmiowb(); spin_unlock_irqrestore(&host->lock, flags); @@ -966,13 +862,14 @@ static void sdhci_tasklet_finish(unsigned long param) * The controller needs a reset of internal state machines * upon error conditions. */ - if (mrq->cmd->error || - (mrq->data && (mrq->data->error || - (mrq->data->stop && mrq->data->stop->error))) || - (host->chip->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST)) { + if (!(host->flags & SDHCI_DEVICE_DEAD) && + (mrq->cmd->error || + (mrq->data && (mrq->data->error || + (mrq->data->stop && mrq->data->stop->error))) || + (host->quirks & SDHCI_QUIRK_RESET_AFTER_REQUEST))) { /* Some controllers need this kick or reset won't work here */ - if (host->chip->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { + if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) { unsigned int clock; /* This is to force an update */ @@ -1204,165 +1101,90 @@ out: #ifdef CONFIG_PM -static int sdhci_suspend (struct pci_dev *pdev, pm_message_t state) +int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state) { - struct sdhci_chip *chip; - int i, ret; - - chip = pci_get_drvdata(pdev); - if (!chip) - return 0; - - DBG("Suspending...\n"); - - for (i = 0;i < chip->num_slots;i++) { - if (!chip->hosts[i]) - continue; - ret = mmc_suspend_host(chip->hosts[i]->mmc, state); - if (ret) { - for (i--;i >= 0;i--) - mmc_resume_host(chip->hosts[i]->mmc); - return ret; - } - } - - pci_save_state(pdev); - pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); + int ret; - for (i = 0;i < chip->num_slots;i++) { - if (!chip->hosts[i]) - continue; - free_irq(chip->hosts[i]->irq, chip->hosts[i]); - } + ret = mmc_suspend_host(host->mmc, state); + if (ret) + return ret; - pci_disable_device(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); + free_irq(host->irq, host); return 0; } -static int sdhci_resume (struct pci_dev *pdev) -{ - struct sdhci_chip *chip; - int i, ret; +EXPORT_SYMBOL_GPL(sdhci_suspend_host); - chip = pci_get_drvdata(pdev); - if (!chip) - return 0; +int sdhci_resume_host(struct sdhci_host *host) +{ + int ret; - DBG("Resuming...\n"); + if (host->flags & SDHCI_USE_DMA) { + if (host->ops->enable_dma) + host->ops->enable_dma(host); + } - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - ret = pci_enable_device(pdev); + ret = request_irq(host->irq, sdhci_irq, IRQF_SHARED, + mmc_hostname(host->mmc), host); if (ret) return ret; - for (i = 0;i < chip->num_slots;i++) { - if (!chip->hosts[i]) - continue; - if (chip->hosts[i]->flags & SDHCI_USE_DMA) - pci_set_master(pdev); - ret = request_irq(chip->hosts[i]->irq, sdhci_irq, - IRQF_SHARED, mmc_hostname(chip->hosts[i]->mmc), - chip->hosts[i]); - if (ret) - return ret; - sdhci_init(chip->hosts[i]); - mmiowb(); - ret = mmc_resume_host(chip->hosts[i]->mmc); - if (ret) - return ret; - } + sdhci_init(host); + mmiowb(); + + ret = mmc_resume_host(host->mmc); + if (ret) + return ret; return 0; } -#else /* CONFIG_PM */ - -#define sdhci_suspend NULL -#define sdhci_resume NULL +EXPORT_SYMBOL_GPL(sdhci_resume_host); #endif /* CONFIG_PM */ /*****************************************************************************\ * * - * Device probing/removal * + * Device allocation/registration * * * \*****************************************************************************/ -static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) +struct sdhci_host *sdhci_alloc_host(struct device *dev, + size_t priv_size) { - int ret; - unsigned int version; - struct sdhci_chip *chip; struct mmc_host *mmc; struct sdhci_host *host; - u8 first_bar; - unsigned int caps; - - chip = pci_get_drvdata(pdev); - BUG_ON(!chip); + WARN_ON(dev == NULL); - ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar); - if (ret) - return ret; - - first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK; - - if (first_bar > 5) { - printk(KERN_ERR DRIVER_NAME ": Invalid first BAR. Aborting.\n"); - return -ENODEV; - } - - if (!(pci_resource_flags(pdev, first_bar + slot) & IORESOURCE_MEM)) { - printk(KERN_ERR DRIVER_NAME ": BAR is not iomem. Aborting.\n"); - return -ENODEV; - } - - if (pci_resource_len(pdev, first_bar + slot) != 0x100) { - printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. " - "You may experience problems.\n"); - } - - if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { - printk(KERN_ERR DRIVER_NAME ": Vendor specific interface. Aborting.\n"); - return -ENODEV; - } - - if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) { - printk(KERN_ERR DRIVER_NAME ": Unknown interface. Aborting.\n"); - return -ENODEV; - } - - mmc = mmc_alloc_host(sizeof(struct sdhci_host), &pdev->dev); + mmc = mmc_alloc_host(sizeof(struct sdhci_host) + priv_size, dev); if (!mmc) - return -ENOMEM; + return ERR_PTR(-ENOMEM); host = mmc_priv(mmc); host->mmc = mmc; - host->chip = chip; - chip->hosts[slot] = host; + return host; +} - host->bar = first_bar + slot; +EXPORT_SYMBOL_GPL(sdhci_alloc_host); - host->addr = pci_resource_start(pdev, host->bar); - host->irq = pdev->irq; +int sdhci_add_host(struct sdhci_host *host) +{ + struct mmc_host *mmc; + unsigned int caps; + unsigned int version; + int ret; - DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq); + WARN_ON(host == NULL); + if (host == NULL) + return -EINVAL; - ret = pci_request_region(pdev, host->bar, mmc_hostname(mmc)); - if (ret) - goto free; + mmc = host->mmc; - host->ioaddr = ioremap_nocache(host->addr, - pci_resource_len(pdev, host->bar)); - if (!host->ioaddr) { - ret = -ENOMEM; - goto release; - } + if (debug_quirks) + host->quirks = debug_quirks; sdhci_reset(host, SDHCI_RESET_ALL); @@ -1376,46 +1198,40 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) caps = readl(host->ioaddr + SDHCI_CAPABILITIES); - if (chip->quirks & SDHCI_QUIRK_FORCE_DMA) + if (host->quirks & SDHCI_QUIRK_FORCE_DMA) host->flags |= SDHCI_USE_DMA; else if (!(caps & SDHCI_CAN_DO_DMA)) DBG("Controller doesn't have DMA capability\n"); else host->flags |= SDHCI_USE_DMA; - if ((chip->quirks & SDHCI_QUIRK_BROKEN_DMA) && + if ((host->quirks & SDHCI_QUIRK_BROKEN_DMA) && (host->flags & SDHCI_USE_DMA)) { DBG("Disabling DMA as it is marked broken\n"); host->flags &= ~SDHCI_USE_DMA; } - if (((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) && - (host->flags & SDHCI_USE_DMA)) { - printk(KERN_WARNING "%s: Will use DMA " - "mode even though HW doesn't fully " - "claim to support it.\n", mmc_hostname(mmc)); - } - if (host->flags & SDHCI_USE_DMA) { - if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { - printk(KERN_WARNING "%s: No suitable DMA available. " - "Falling back to PIO.\n", mmc_hostname(mmc)); - host->flags &= ~SDHCI_USE_DMA; + if (host->ops->enable_dma) { + if (host->ops->enable_dma(host)) { + printk(KERN_WARNING "%s: No suitable DMA " + "available. Falling back to PIO.\n", + mmc_hostname(mmc)); + host->flags &= ~SDHCI_USE_DMA; + } } } - if (host->flags & SDHCI_USE_DMA) - pci_set_master(pdev); - else /* XXX: Hack to get MMC layer to avoid highmem */ - pdev->dma_mask = 0; + /* XXX: Hack to get MMC layer to avoid highmem */ + if (!(host->flags & SDHCI_USE_DMA)) + mmc_dev(host->mmc)->dma_mask = 0; host->max_clk = (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; if (host->max_clk == 0) { printk(KERN_ERR "%s: Hardware doesn't specify base clock " "frequency.\n", mmc_hostname(mmc)); - ret = -ENODEV; - goto unmap; + return -ENODEV; } host->max_clk *= 1000000; @@ -1424,8 +1240,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) if (host->timeout_clk == 0) { printk(KERN_ERR "%s: Hardware doesn't specify timeout clock " "frequency.\n", mmc_hostname(mmc)); - ret = -ENODEV; - goto unmap; + return -ENODEV; } if (caps & SDHCI_TIMEOUT_CLK_UNIT) host->timeout_clk *= 1000; @@ -1436,7 +1251,7 @@ 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_CAP_SDIO_IRQ; + mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; if (caps & SDHCI_CAN_DO_HISPD) mmc->caps |= MMC_CAP_SD_HIGHSPEED; @@ -1452,8 +1267,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) if (mmc->ocr_avail == 0) { printk(KERN_ERR "%s: Hardware doesn't report any " "support voltages.\n", mmc_hostname(mmc)); - ret = -ENODEV; - goto unmap; + return -ENODEV; } spin_lock_init(&host->lock); @@ -1523,7 +1337,7 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) host->led.default_trigger = mmc_hostname(mmc); host->led.brightness_set = sdhci_led_control; - ret = led_classdev_register(&pdev->dev, &host->led); + ret = led_classdev_register(mmc_dev(mmc), &host->led); if (ret) goto reset; #endif @@ -1532,8 +1346,8 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot) mmc_add_host(mmc); - printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n", - mmc_hostname(mmc), host->addr, host->irq, + printk(KERN_INFO "%s: SDHCI controller on %s [%s] using %s\n", + mmc_hostname(mmc), host->hw_name, mmc_dev(mmc)->bus_id, (host->flags & SDHCI_USE_DMA)?"DMA":"PIO"); return 0; @@ -1546,35 +1360,40 @@ reset: untasklet: tasklet_kill(&host->card_tasklet); tasklet_kill(&host->finish_tasklet); -unmap: - iounmap(host->ioaddr); -release: - pci_release_region(pdev, host->bar); -free: - mmc_free_host(mmc); return ret; } -static void sdhci_remove_slot(struct pci_dev *pdev, int slot) +EXPORT_SYMBOL_GPL(sdhci_add_host); + +void sdhci_remove_host(struct sdhci_host *host, int dead) { - struct sdhci_chip *chip; - struct mmc_host *mmc; - struct sdhci_host *host; + unsigned long flags; - chip = pci_get_drvdata(pdev); - host = chip->hosts[slot]; - mmc = host->mmc; + if (dead) { + spin_lock_irqsave(&host->lock, flags); - chip->hosts[slot] = NULL; + host->flags |= SDHCI_DEVICE_DEAD; - mmc_remove_host(mmc); + if (host->mrq) { + printk(KERN_ERR "%s: Controller removed during " + " transfer!\n", mmc_hostname(host->mmc)); + + host->mrq->cmd->error = -ENOMEDIUM; + tasklet_schedule(&host->finish_tasklet); + } + + spin_unlock_irqrestore(&host->lock, flags); + } + + mmc_remove_host(host->mmc); #ifdef CONFIG_LEDS_CLASS led_classdev_unregister(&host->led); #endif - sdhci_reset(host, SDHCI_RESET_ALL); + if (!dead) + sdhci_reset(host, SDHCI_RESET_ALL); free_irq(host->irq, host); @@ -1582,107 +1401,16 @@ static void sdhci_remove_slot(struct pci_dev *pdev, int slot) tasklet_kill(&host->card_tasklet); tasklet_kill(&host->finish_tasklet); - - iounmap(host->ioaddr); - - pci_release_region(pdev, host->bar); - - mmc_free_host(mmc); } -static int __devinit sdhci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - int ret, i; - u8 slots, rev; - struct sdhci_chip *chip; - - BUG_ON(pdev == NULL); - BUG_ON(ent == NULL); - - pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev); - - printk(KERN_INFO DRIVER_NAME - ": SDHCI controller found at %s [%04x:%04x] (rev %x)\n", - pci_name(pdev), (int)pdev->vendor, (int)pdev->device, - (int)rev); - - ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots); - if (ret) - return ret; - - slots = PCI_SLOT_INFO_SLOTS(slots) + 1; - DBG("found %d slot(s)\n", slots); - if (slots == 0) - return -ENODEV; - - ret = pci_enable_device(pdev); - if (ret) - return ret; - - chip = kzalloc(sizeof(struct sdhci_chip) + - sizeof(struct sdhci_host*) * slots, GFP_KERNEL); - if (!chip) { - ret = -ENOMEM; - goto err; - } - - chip->pdev = pdev; - chip->quirks = ent->driver_data; - - if (debug_quirks) - chip->quirks = debug_quirks; - - chip->num_slots = slots; - pci_set_drvdata(pdev, chip); - - for (i = 0;i < slots;i++) { - ret = sdhci_probe_slot(pdev, i); - if (ret) { - for (i--;i >= 0;i--) - sdhci_remove_slot(pdev, i); - goto free; - } - } +EXPORT_SYMBOL_GPL(sdhci_remove_host); - return 0; - -free: - pci_set_drvdata(pdev, NULL); - kfree(chip); - -err: - pci_disable_device(pdev); - return ret; -} - -static void __devexit sdhci_remove(struct pci_dev *pdev) +void sdhci_free_host(struct sdhci_host *host) { - int i; - struct sdhci_chip *chip; - - chip = pci_get_drvdata(pdev); - - if (chip) { - for (i = 0;i < chip->num_slots;i++) - sdhci_remove_slot(pdev, i); - - pci_set_drvdata(pdev, NULL); - - kfree(chip); - } - - pci_disable_device(pdev); + mmc_free_host(host->mmc); } -static struct pci_driver sdhci_driver = { - .name = DRIVER_NAME, - .id_table = pci_ids, - .probe = sdhci_probe, - .remove = __devexit_p(sdhci_remove), - .suspend = sdhci_suspend, - .resume = sdhci_resume, -}; +EXPORT_SYMBOL_GPL(sdhci_free_host); /*****************************************************************************\ * * @@ -1696,14 +1424,11 @@ static int __init sdhci_drv_init(void) ": Secure Digital Host Controller Interface driver\n"); printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); - return pci_register_driver(&sdhci_driver); + return 0; } static void __exit sdhci_drv_exit(void) { - DBG("Exiting\n"); - - pci_unregister_driver(&sdhci_driver); } module_init(sdhci_drv_init); @@ -1712,7 +1437,7 @@ module_exit(sdhci_drv_exit); module_param(debug_quirks, uint, 0444); MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>"); -MODULE_DESCRIPTION("Secure Digital Host Controller Interface driver"); +MODULE_DESCRIPTION("Secure Digital Host Controller Interface core driver"); MODULE_LICENSE("GPL"); MODULE_PARM_DESC(debug_quirks, "Force certain quirks."); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 299118de8933..3d0a2c2963f5 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -10,18 +10,6 @@ */ /* - * PCI registers - */ - -#define PCI_SDHCI_IFPIO 0x00 -#define PCI_SDHCI_IFDMA 0x01 -#define PCI_SDHCI_IFVENDOR 0x02 - -#define PCI_SLOT_INFO 0x40 /* 8 bits */ -#define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7) -#define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07 - -/* * Controller registers */ @@ -162,10 +150,39 @@ #define SDHCI_SPEC_VER_MASK 0x00FF #define SDHCI_SPEC_VER_SHIFT 0 -struct sdhci_chip; +struct sdhci_ops; struct sdhci_host { - struct sdhci_chip *chip; + /* Data set by hardware interface driver */ + const char *hw_name; /* Hardware bus name */ + + unsigned int quirks; /* Deviations from spec. */ + +/* Controller doesn't honor resets unless we touch the clock register */ +#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) +/* Controller has bad caps bits, but really supports DMA */ +#define SDHCI_QUIRK_FORCE_DMA (1<<1) +/* Controller doesn't like to be reset when there is no card inserted. */ +#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) +/* Controller doesn't like clearing the power reg before a change */ +#define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) +/* Controller has flaky internal state so reset it on each ios change */ +#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) +/* Controller has an unusable DMA engine */ +#define SDHCI_QUIRK_BROKEN_DMA (1<<5) +/* Controller can only DMA from 32-bit aligned addresses */ +#define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<6) +/* Controller can only DMA chunk sizes that are a multiple of 32 bits */ +#define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<7) +/* Controller needs to be reset after each request to stay stable */ +#define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<8) + + int irq; /* Device IRQ */ + void __iomem * ioaddr; /* Mapped address */ + + const struct sdhci_ops *ops; /* Low level hw interface */ + + /* Internal data */ struct mmc_host *mmc; /* MMC structure */ #ifdef CONFIG_LEDS_CLASS @@ -177,6 +194,7 @@ struct sdhci_host { int flags; /* Host attributes */ #define SDHCI_USE_DMA (1<<0) /* Host is DMA capable */ #define SDHCI_REQ_USE_DMA (1<<1) /* Use DMA for this req. */ +#define SDHCI_DEVICE_DEAD (1<<2) /* Device unresponsive */ unsigned int max_clk; /* Max possible freq (MHz) */ unsigned int timeout_clk; /* Timeout freq (KHz) */ @@ -194,22 +212,33 @@ struct sdhci_host { int offset; /* Offset into current sg */ int remain; /* Bytes left in current */ - int irq; /* Device IRQ */ - int bar; /* PCI BAR index */ - unsigned long addr; /* Bus address */ - void __iomem * ioaddr; /* Mapped address */ - struct tasklet_struct card_tasklet; /* Tasklet structures */ struct tasklet_struct finish_tasklet; struct timer_list timer; /* Timer for timeouts */ -}; -struct sdhci_chip { - struct pci_dev *pdev; + unsigned long private[0] ____cacheline_aligned; +}; - unsigned long quirks; - int num_slots; /* Slots on controller */ - struct sdhci_host *hosts[0]; /* Pointers to hosts */ +struct sdhci_ops { + int (*enable_dma)(struct sdhci_host *host); }; + + +extern struct sdhci_host *sdhci_alloc_host(struct device *dev, + size_t priv_size); +extern void sdhci_free_host(struct sdhci_host *host); + +static inline void *sdhci_priv(struct sdhci_host *host) +{ + return (void *)host->private; +} + +extern int sdhci_add_host(struct sdhci_host *host); +extern void sdhci_remove_host(struct sdhci_host *host, int dead); + +#ifdef CONFIG_PM +extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state); +extern int sdhci_resume_host(struct sdhci_host *host); +#endif diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 0d508ac17d64..85dda43eb904 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -94,6 +94,7 @@ struct mmc_card { #define MMC_STATE_READONLY (1<<1) /* card is read-only */ #define MMC_STATE_HIGHSPEED (1<<2) /* card is in high speed mode */ #define MMC_STATE_BLOCKADDR (1<<3) /* card uses block-addressing */ +#define MMC_STATE_LOCKED (1<<4) /* card is currently locked */ u32 raw_cid[4]; /* raw card CID */ u32 raw_csd[4]; /* raw card CSD */ @@ -121,11 +122,13 @@ struct mmc_card { #define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY) #define mmc_card_highspeed(c) ((c)->state & MMC_STATE_HIGHSPEED) #define mmc_card_blockaddr(c) ((c)->state & MMC_STATE_BLOCKADDR) +#define mmc_card_locked(c) ((c)->state & MMC_STATE_LOCKED) #define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT) #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_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR) +#define mmc_card_set_locked(c) ((c)->state |= MMC_STATE_LOCKED) #define mmc_card_name(c) ((c)->cid.prod_name) #define mmc_card_id(c) ((c)->dev.bus_id) diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 7ab962fa1d73..ef3b773cec91 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -51,8 +51,18 @@ struct mmc_ios { struct mmc_host_ops { void (*request)(struct mmc_host *host, struct mmc_request *req); + /* + * Avoid calling these three functions too often or in a "fast path", + * since underlaying controller might implement them in an expensive + * and/or slow way. + * + * .get_ro and .get_cd should return >= 0 for their logical values, + * or negative errno value in case of error. + */ void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); int (*get_ro)(struct mmc_host *host); + int (*get_cd)(struct mmc_host *host); + void (*enable_sdio_irq)(struct mmc_host *host, int enable); }; @@ -94,6 +104,7 @@ struct mmc_host { #define MMC_CAP_SD_HIGHSPEED (1 << 3) /* Can do SD high-speed timing */ #define MMC_CAP_SDIO_IRQ (1 << 4) /* Can signal pending SDIO IRQs */ #define MMC_CAP_SPI (1 << 5) /* Talks only SPI protocols */ +#define MMC_CAP_NEEDS_POLL (1 << 6) /* Needs polling for card-detection */ /* host specific block data */ unsigned int max_seg_size; /* see blk_queue_max_segment_size */ diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 4236fbf0b6fb..a9de8e988798 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -16,7 +16,6 @@ * Based strongly on code by: * * Author: Yong-iL Joh <tolkien@mizi.com> - * Date : $Date: 2002/06/18 12:37:30 $ * * Author: Andrew Christian * 15 May 2002 @@ -280,5 +279,13 @@ struct _mmc_csd { #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 */ +/* + * MMC_LOCK_UNLOCK modes + */ +#define MMC_LOCK_MODE_ERASE (1<<3) +#define MMC_LOCK_MODE_UNLOCK (1<<2) +#define MMC_LOCK_MODE_CLR_PWD (1<<1) +#define MMC_LOCK_MODE_SET_PWD (1<<0) + #endif /* MMC_MMC_PROTOCOL_H */ diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index caa000596b25..ebf32717b35d 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2188,6 +2188,7 @@ #define PCI_DEVICE_ID_JMICRON_JMB366 0x2366 #define PCI_DEVICE_ID_JMICRON_JMB368 0x2368 #define PCI_DEVICE_ID_JMICRON_JMB38X_SD 0x2381 +#define PCI_DEVICE_ID_JMICRON_JMB38X_MMC 0x2382 #define PCI_DEVICE_ID_JMICRON_JMB38X_MS 0x2383 #define PCI_VENDOR_ID_KORENIX 0x1982 diff --git a/include/linux/spi/mmc_spi.h b/include/linux/spi/mmc_spi.h index d5ca78b93a3b..a3626aedaec9 100644 --- a/include/linux/spi/mmc_spi.h +++ b/include/linux/spi/mmc_spi.h @@ -23,6 +23,15 @@ struct mmc_spi_platform_data { /* sense switch on sd cards */ int (*get_ro)(struct device *); + /* + * If board does not use CD interrupts, driver can optimize polling + * using this function. + */ + int (*get_cd)(struct device *); + + /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */ + unsigned long caps; + /* how long to debounce card detect, in msecs */ u16 detect_delay; |