diff options
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/block.c | 277 | ||||
| -rw-r--r-- | drivers/mmc/core/core.c | 68 | ||||
| -rw-r--r-- | drivers/mmc/core/core.h | 6 | ||||
| -rw-r--r-- | drivers/mmc/core/debugfs.c | 89 | ||||
| -rw-r--r-- | drivers/mmc/core/host.c | 6 | ||||
| -rw-r--r-- | drivers/mmc/core/host.h | 1 | ||||
| -rw-r--r-- | drivers/mmc/core/mmc.c | 31 | ||||
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 3 | ||||
| -rw-r--r-- | drivers/mmc/core/mmc_test.c | 97 | ||||
| -rw-r--r-- | drivers/mmc/core/queue.h | 6 | ||||
| -rw-r--r-- | drivers/mmc/core/sd.c | 12 |
11 files changed, 314 insertions, 282 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 80d1ec693d2d..29fc1e662891 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -36,6 +36,7 @@ #include <linux/compat.h> #include <linux/pm_runtime.h> #include <linux/idr.h> +#include <linux/debugfs.h> #include <linux/mmc/ioctl.h> #include <linux/mmc/card.h> @@ -126,7 +127,7 @@ module_param(perdev_minors, int, 0444); MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device"); static inline int mmc_blk_part_switch(struct mmc_card *card, - struct mmc_blk_data *md); + unsigned int part_type); static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk) { @@ -188,7 +189,6 @@ static ssize_t power_ro_lock_store(struct device *dev, { int ret; struct mmc_blk_data *md, *part_md; - struct mmc_card *card; struct mmc_queue *mq; struct request *req; unsigned long set; @@ -201,7 +201,6 @@ static ssize_t power_ro_lock_store(struct device *dev, md = mmc_blk_get(dev_to_disk(dev)); mq = &md->queue; - card = md->queue.card; /* Dispatch locking to the block layer */ req = blk_get_request(mq->queue, REQ_OP_DRV_OUT, __GFP_RECLAIM); @@ -489,7 +488,7 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md, mrq.cmd = &cmd; - err = mmc_blk_part_switch(card, md); + err = mmc_blk_part_switch(card, md->part_type); if (err) return err; @@ -554,35 +553,20 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md, return err; } -static int mmc_blk_ioctl_cmd(struct block_device *bdev, +static int mmc_blk_ioctl_cmd(struct mmc_blk_data *md, struct mmc_ioc_cmd __user *ic_ptr) { struct mmc_blk_ioc_data *idata; struct mmc_blk_ioc_data *idatas[1]; - struct mmc_blk_data *md; struct mmc_queue *mq; struct mmc_card *card; int err = 0, ioc_err = 0; struct request *req; - /* - * The caller must have CAP_SYS_RAWIO, and must be calling this on the - * whole block device, not on a partition. This prevents overspray - * between sibling partitions. - */ - if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains)) - return -EPERM; - idata = mmc_blk_ioctl_copy_from_user(ic_ptr); if (IS_ERR(idata)) return PTR_ERR(idata); - md = mmc_blk_get(bdev->bd_disk); - if (!md) { - err = -EINVAL; - goto cmd_err; - } - card = md->queue.card; if (IS_ERR(card)) { err = PTR_ERR(card); @@ -598,7 +582,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, __GFP_RECLAIM); idatas[0] = idata; req_to_mmc_queue_req(req)->drv_op = MMC_DRV_OP_IOCTL; - req_to_mmc_queue_req(req)->idata = idatas; + req_to_mmc_queue_req(req)->drv_op_data = idatas; req_to_mmc_queue_req(req)->ioc_count = 1; blk_execute_rq(mq->queue, NULL, req, 0); ioc_err = req_to_mmc_queue_req(req)->drv_op_result; @@ -606,33 +590,22 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, blk_put_request(req); cmd_done: - mmc_blk_put(md); -cmd_err: kfree(idata->buf); kfree(idata); return ioc_err ? ioc_err : err; } -static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, +static int mmc_blk_ioctl_multi_cmd(struct mmc_blk_data *md, struct mmc_ioc_multi_cmd __user *user) { struct mmc_blk_ioc_data **idata = NULL; struct mmc_ioc_cmd __user *cmds = user->cmds; struct mmc_card *card; - struct mmc_blk_data *md; struct mmc_queue *mq; int i, err = 0, ioc_err = 0; __u64 num_of_cmds; struct request *req; - /* - * The caller must have CAP_SYS_RAWIO, and must be calling this on the - * whole block device, not on a partition. This prevents overspray - * between sibling partitions. - */ - if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains)) - return -EPERM; - if (copy_from_user(&num_of_cmds, &user->num_of_cmds, sizeof(num_of_cmds))) return -EFAULT; @@ -656,16 +629,10 @@ static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, } } - md = mmc_blk_get(bdev->bd_disk); - if (!md) { - err = -EINVAL; - goto cmd_err; - } - card = md->queue.card; if (IS_ERR(card)) { err = PTR_ERR(card); - goto cmd_done; + goto cmd_err; } @@ -677,7 +644,7 @@ static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, idata[0]->ic.write_flag ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, __GFP_RECLAIM); req_to_mmc_queue_req(req)->drv_op = MMC_DRV_OP_IOCTL; - req_to_mmc_queue_req(req)->idata = idata; + req_to_mmc_queue_req(req)->drv_op_data = idata; req_to_mmc_queue_req(req)->ioc_count = num_of_cmds; blk_execute_rq(mq->queue, NULL, req, 0); ioc_err = req_to_mmc_queue_req(req)->drv_op_result; @@ -688,8 +655,6 @@ static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev, blk_put_request(req); -cmd_done: - mmc_blk_put(md); cmd_err: for (i = 0; i < num_of_cmds; i++) { kfree(idata[i]->buf); @@ -699,16 +664,47 @@ cmd_err: return ioc_err ? ioc_err : err; } +static int mmc_blk_check_blkdev(struct block_device *bdev) +{ + /* + * The caller must have CAP_SYS_RAWIO, and must be calling this on the + * whole block device, not on a partition. This prevents overspray + * between sibling partitions. + */ + if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains)) + return -EPERM; + return 0; +} + static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) { + struct mmc_blk_data *md; + int ret; + switch (cmd) { case MMC_IOC_CMD: - return mmc_blk_ioctl_cmd(bdev, - (struct mmc_ioc_cmd __user *)arg); + ret = mmc_blk_check_blkdev(bdev); + if (ret) + return ret; + md = mmc_blk_get(bdev->bd_disk); + if (!md) + return -EINVAL; + ret = mmc_blk_ioctl_cmd(md, + (struct mmc_ioc_cmd __user *)arg); + mmc_blk_put(md); + return ret; case MMC_IOC_MULTI_CMD: - return mmc_blk_ioctl_multi_cmd(bdev, - (struct mmc_ioc_multi_cmd __user *)arg); + ret = mmc_blk_check_blkdev(bdev); + if (ret) + return ret; + md = mmc_blk_get(bdev->bd_disk); + if (!md) + return -EINVAL; + ret = mmc_blk_ioctl_multi_cmd(md, + (struct mmc_ioc_multi_cmd __user *)arg); + mmc_blk_put(md); + return ret; default: return -EINVAL; } @@ -765,29 +761,29 @@ static int mmc_blk_part_switch_post(struct mmc_card *card, } static inline int mmc_blk_part_switch(struct mmc_card *card, - struct mmc_blk_data *md) + unsigned int part_type) { int ret = 0; struct mmc_blk_data *main_md = dev_get_drvdata(&card->dev); - if (main_md->part_curr == md->part_type) + if (main_md->part_curr == part_type) return 0; if (mmc_card_mmc(card)) { u8 part_config = card->ext_csd.part_config; - ret = mmc_blk_part_switch_pre(card, md->part_type); + ret = mmc_blk_part_switch_pre(card, part_type); if (ret) return ret; part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; - part_config |= md->part_type; + part_config |= part_type; ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, part_config, card->ext_csd.part_time); if (ret) { - mmc_blk_part_switch_post(card, md->part_type); + mmc_blk_part_switch_post(card, part_type); return ret; } @@ -796,7 +792,7 @@ static inline int mmc_blk_part_switch(struct mmc_card *card, ret = mmc_blk_part_switch_post(card, main_md->part_curr); } - main_md->part_curr = md->part_type; + main_md->part_curr = part_type; return ret; } @@ -1139,7 +1135,7 @@ static int mmc_blk_reset(struct mmc_blk_data *md, struct mmc_host *host, int part_err; main_md->part_curr = main_md->part_type; - part_err = mmc_blk_part_switch(host->card, md); + part_err = mmc_blk_part_switch(host->card, md->part_type); if (part_err) { /* * We have failed to get back into the correct @@ -1178,6 +1174,10 @@ static void mmc_blk_issue_drv_op(struct mmc_queue *mq, struct request *req) struct mmc_queue_req *mq_rq; struct mmc_card *card = mq->card; struct mmc_blk_data *md = mq->blkdata; + struct mmc_blk_data *main_md = dev_get_drvdata(&card->dev); + struct mmc_blk_ioc_data **idata; + u8 **ext_csd; + u32 status; int ret; int i; @@ -1185,14 +1185,15 @@ static void mmc_blk_issue_drv_op(struct mmc_queue *mq, struct request *req) switch (mq_rq->drv_op) { case MMC_DRV_OP_IOCTL: + idata = mq_rq->drv_op_data; for (i = 0, ret = 0; i < mq_rq->ioc_count; i++) { - ret = __mmc_blk_ioctl_cmd(card, md, mq_rq->idata[i]); + ret = __mmc_blk_ioctl_cmd(card, md, idata[i]); if (ret) break; } /* Always switch back to main area after RPMB access */ if (md->area_type & MMC_BLK_DATA_AREA_RPMB) - mmc_blk_part_switch(card, dev_get_drvdata(&card->dev)); + mmc_blk_part_switch(card, main_md->part_type); break; case MMC_DRV_OP_BOOT_WP: ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_WP, @@ -1206,6 +1207,15 @@ static void mmc_blk_issue_drv_op(struct mmc_queue *mq, struct request *req) card->ext_csd.boot_ro_lock |= EXT_CSD_BOOT_WP_B_PWR_WP_EN; break; + case MMC_DRV_OP_GET_CARD_STATUS: + ret = mmc_send_status(card, &status); + if (!ret) + ret = status; + break; + case MMC_DRV_OP_GET_EXT_CSD: + ext_csd = mq_rq->drv_op_data; + ret = mmc_get_ext_csd(card, ext_csd); + break; default: pr_err("%s: unknown driver specific operation\n", md->disk->disk_name); @@ -1213,7 +1223,7 @@ static void mmc_blk_issue_drv_op(struct mmc_queue *mq, struct request *req) break; } mq_rq->drv_op_result = ret; - blk_end_request_all(req, ret); + blk_end_request_all(req, ret ? BLK_STS_IOERR : BLK_STS_OK); } static void mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req) @@ -1718,9 +1728,9 @@ static bool mmc_blk_rw_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, if (err) req_pending = old_req_pending; else - req_pending = blk_end_request(req, 0, blocks << 9); + req_pending = blk_end_request(req, BLK_STS_OK, blocks << 9); } else { - req_pending = blk_end_request(req, 0, brq->data.bytes_xfered); + req_pending = blk_end_request(req, BLK_STS_OK, brq->data.bytes_xfered); } return req_pending; } @@ -1943,7 +1953,7 @@ void mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) /* claim host only for the first request */ mmc_get_card(card); - ret = mmc_blk_part_switch(card, md); + ret = mmc_blk_part_switch(card, md->part_type); if (ret) { if (req) { blk_end_request_all(req, BLK_STS_IOERR); @@ -2024,8 +2034,20 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, int devidx, ret; devidx = ida_simple_get(&mmc_blk_ida, 0, max_devices, GFP_KERNEL); - if (devidx < 0) + if (devidx < 0) { + /* + * We get -ENOSPC because there are no more any available + * devidx. The reason may be that, either userspace haven't yet + * unmounted the partitions, which postpones mmc_blk_release() + * from being called, or the device has more partitions than + * what we support. + */ + if (devidx == -ENOSPC) + dev_err(mmc_dev(card->host), + "no more device IDs available\n"); + return ERR_PTR(devidx); + } md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL); if (!md) { @@ -2283,6 +2305,134 @@ force_ro_fail: return ret; } +#ifdef CONFIG_DEBUG_FS + +static int mmc_dbg_card_status_get(void *data, u64 *val) +{ + struct mmc_card *card = data; + struct mmc_blk_data *md = dev_get_drvdata(&card->dev); + struct mmc_queue *mq = &md->queue; + struct request *req; + int ret; + + /* Ask the block layer about the card status */ + req = blk_get_request(mq->queue, REQ_OP_DRV_IN, __GFP_RECLAIM); + req_to_mmc_queue_req(req)->drv_op = MMC_DRV_OP_GET_CARD_STATUS; + blk_execute_rq(mq->queue, NULL, req, 0); + ret = req_to_mmc_queue_req(req)->drv_op_result; + if (ret >= 0) { + *val = ret; + ret = 0; + } + + return ret; +} +DEFINE_SIMPLE_ATTRIBUTE(mmc_dbg_card_status_fops, mmc_dbg_card_status_get, + NULL, "%08llx\n"); + +/* That is two digits * 512 + 1 for newline */ +#define EXT_CSD_STR_LEN 1025 + +static int mmc_ext_csd_open(struct inode *inode, struct file *filp) +{ + struct mmc_card *card = inode->i_private; + struct mmc_blk_data *md = dev_get_drvdata(&card->dev); + struct mmc_queue *mq = &md->queue; + struct request *req; + char *buf; + ssize_t n = 0; + u8 *ext_csd; + int err, i; + + buf = kmalloc(EXT_CSD_STR_LEN + 1, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + /* Ask the block layer for the EXT CSD */ + req = blk_get_request(mq->queue, REQ_OP_DRV_IN, __GFP_RECLAIM); + req_to_mmc_queue_req(req)->drv_op = MMC_DRV_OP_GET_EXT_CSD; + req_to_mmc_queue_req(req)->drv_op_data = &ext_csd; + blk_execute_rq(mq->queue, NULL, req, 0); + err = req_to_mmc_queue_req(req)->drv_op_result; + if (err) { + pr_err("FAILED %d\n", err); + goto out_free; + } + + for (i = 0; i < 512; i++) + n += sprintf(buf + n, "%02x", ext_csd[i]); + n += sprintf(buf + n, "\n"); + + if (n != EXT_CSD_STR_LEN) { + err = -EINVAL; + goto out_free; + } + + filp->private_data = buf; + kfree(ext_csd); + return 0; + +out_free: + kfree(buf); + return err; +} + +static ssize_t mmc_ext_csd_read(struct file *filp, char __user *ubuf, + size_t cnt, loff_t *ppos) +{ + char *buf = filp->private_data; + + return simple_read_from_buffer(ubuf, cnt, ppos, + buf, EXT_CSD_STR_LEN); +} + +static int mmc_ext_csd_release(struct inode *inode, struct file *file) +{ + kfree(file->private_data); + return 0; +} + +static const struct file_operations mmc_dbg_ext_csd_fops = { + .open = mmc_ext_csd_open, + .read = mmc_ext_csd_read, + .release = mmc_ext_csd_release, + .llseek = default_llseek, +}; + +static int mmc_blk_add_debugfs(struct mmc_card *card) +{ + struct dentry *root; + + if (!card->debugfs_root) + return 0; + + root = card->debugfs_root; + + if (mmc_card_mmc(card) || mmc_card_sd(card)) { + if (!debugfs_create_file("status", S_IRUSR, root, card, + &mmc_dbg_card_status_fops)) + return -EIO; + } + + if (mmc_card_mmc(card)) { + if (!debugfs_create_file("ext_csd", S_IRUSR, root, card, + &mmc_dbg_ext_csd_fops)) + return -EIO; + } + + return 0; +} + + +#else + +static int mmc_blk_add_debugfs(struct mmc_card *card) +{ + return 0; +} + +#endif /* CONFIG_DEBUG_FS */ + static int mmc_blk_probe(struct mmc_card *card) { struct mmc_blk_data *md, *part_md; @@ -2319,6 +2469,9 @@ static int mmc_blk_probe(struct mmc_card *card) goto out; } + /* Add two debugfs entries */ + mmc_blk_add_debugfs(card); + pm_runtime_set_autosuspend_delay(&card->dev, 3000); pm_runtime_use_autosuspend(&card->dev); @@ -2346,7 +2499,7 @@ static void mmc_blk_remove(struct mmc_card *card) mmc_blk_remove_parts(card, md); pm_runtime_get_sync(&card->dev); mmc_claim_host(card->host); - mmc_blk_part_switch(card, md); + mmc_blk_part_switch(card, md->part_type); mmc_release_host(card->host); if (card->type != MMC_TYPE_SD_COMBO) pm_runtime_disable(&card->dev); diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 26431267a3e2..66c9cf49ad2f 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -260,6 +260,9 @@ static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) trace_mmc_request_start(host, mrq); + if (host->cqe_on) + host->cqe_ops->cqe_off(host); + host->ops->request(host, mrq); } @@ -295,10 +298,8 @@ static void mmc_mrq_pr_debug(struct mmc_host *host, struct mmc_request *mrq) static int mmc_mrq_prep(struct mmc_host *host, struct mmc_request *mrq) { -#ifdef CONFIG_MMC_DEBUG - unsigned int i, sz; + unsigned int i, sz = 0; struct scatterlist *sg; -#endif if (mrq->cmd) { mrq->cmd->error = 0; @@ -314,13 +315,12 @@ static int mmc_mrq_prep(struct mmc_host *host, struct mmc_request *mrq) mrq->data->blocks > host->max_blk_count || mrq->data->blocks * mrq->data->blksz > host->max_req_size) return -EINVAL; -#ifdef CONFIG_MMC_DEBUG - sz = 0; + for_each_sg(mrq->data->sg, sg, mrq->data->sg_len, i) sz += sg->length; if (sz != mrq->data->blocks * mrq->data->blksz) return -EINVAL; -#endif + mrq->data->error = 0; mrq->data->mrq = mrq; if (mrq->stop) { @@ -736,8 +736,8 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card) if (data->flags & MMC_DATA_WRITE) mult <<= card->csd.r2w_factor; - data->timeout_ns = card->csd.tacc_ns * mult; - data->timeout_clks = card->csd.tacc_clks * mult; + data->timeout_ns = card->csd.taac_ns * mult; + data->timeout_clks = card->csd.taac_clks * mult; /* * SD cards also have an upper limit on the timeout. @@ -766,7 +766,7 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card) /* * SDHC cards always use these fixed values. */ - if (timeout_us > limit_us || mmc_card_blockaddr(card)) { + if (timeout_us > limit_us) { data->timeout_ns = limit_us * 1000; data->timeout_clks = 0; } @@ -982,6 +982,9 @@ int mmc_execute_tuning(struct mmc_card *card) if (!host->ops->execute_tuning) return 0; + if (host->cqe_on) + host->cqe_ops->cqe_off(host); + if (mmc_card_mmc(card)) opcode = MMC_SEND_TUNING_BLOCK_HS200; else @@ -1021,6 +1024,9 @@ void mmc_set_bus_width(struct mmc_host *host, unsigned int width) */ void mmc_set_initial_state(struct mmc_host *host) { + if (host->cqe_on) + host->cqe_ops->cqe_off(host); + mmc_retune_disable(host); if (mmc_host_is_spi(host)) @@ -1137,11 +1143,11 @@ int mmc_of_parse_voltage(struct device_node *np, u32 *mask) voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges); num_ranges = num_ranges / sizeof(*voltage_ranges) / 2; if (!voltage_ranges) { - pr_debug("%s: voltage-ranges unspecified\n", np->full_name); + pr_debug("%pOF: voltage-ranges unspecified\n", np); return 0; } if (!num_ranges) { - pr_err("%s: voltage-ranges empty\n", np->full_name); + pr_err("%pOF: voltage-ranges empty\n", np); return -EINVAL; } @@ -1153,8 +1159,8 @@ int mmc_of_parse_voltage(struct device_node *np, u32 *mask) be32_to_cpu(voltage_ranges[j]), be32_to_cpu(voltage_ranges[j + 1])); if (!ocr_mask) { - pr_err("%s: voltage-range #%d is invalid\n", - np->full_name, i); + pr_err("%pOF: voltage-range #%d is invalid\n", + np, i); return -EINVAL; } *mask |= ocr_mask; @@ -1769,13 +1775,6 @@ void mmc_detach_bus(struct mmc_host *host) static void _mmc_detect_change(struct mmc_host *host, unsigned long delay, bool cd_irq) { -#ifdef CONFIG_MMC_DEBUG - unsigned long flags; - spin_lock_irqsave(&host->lock, flags); - WARN_ON(host->removed); - spin_unlock_irqrestore(&host->lock, flags); -#endif - /* * If the device is configured as wakeup, we prevent a new sleep for * 5 s to give provision for user space to consume the event. @@ -1869,14 +1868,14 @@ static unsigned int mmc_mmc_erase_timeout(struct mmc_card *card, } else { /* CSD Erase Group Size uses write timeout */ unsigned int mult = (10 << card->csd.r2w_factor); - unsigned int timeout_clks = card->csd.tacc_clks * mult; + unsigned int timeout_clks = card->csd.taac_clks * mult; unsigned int timeout_us; - /* Avoid overflow: e.g. tacc_ns=80000000 mult=1280 */ - if (card->csd.tacc_ns < 1000000) - timeout_us = (card->csd.tacc_ns * mult) / 1000; + /* Avoid overflow: e.g. taac_ns=80000000 mult=1280 */ + if (card->csd.taac_ns < 1000000) + timeout_us = (card->csd.taac_ns * mult) / 1000; else - timeout_us = (card->csd.tacc_ns / 1000) * mult; + timeout_us = (card->csd.taac_ns / 1000) * mult; /* * ios.clock is only a target. The real clock rate might be @@ -2446,10 +2445,9 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq) { host->f_init = freq; -#ifdef CONFIG_MMC_DEBUG - pr_info("%s: %s: trying to init card at %u Hz\n", + pr_debug("%s: %s: trying to init card at %u Hz\n", mmc_hostname(host), __func__, host->f_init); -#endif + mmc_power_up(host, host->ocr_avail); /* @@ -2646,12 +2644,6 @@ void mmc_start_host(struct mmc_host *host) void mmc_stop_host(struct mmc_host *host) { -#ifdef CONFIG_MMC_DEBUG - unsigned long flags; - spin_lock_irqsave(&host->lock, flags); - host->removed = 1; - spin_unlock_irqrestore(&host->lock, flags); -#endif if (host->slot.cd_irq >= 0) { if (host->slot.cd_wake_enabled) disable_irq_wake(host->slot.cd_irq); @@ -2686,9 +2678,7 @@ int mmc_power_save_host(struct mmc_host *host) { int ret = 0; -#ifdef CONFIG_MMC_DEBUG - pr_info("%s: %s: powering down\n", mmc_hostname(host), __func__); -#endif + pr_debug("%s: %s: powering down\n", mmc_hostname(host), __func__); mmc_bus_get(host); @@ -2712,9 +2702,7 @@ int mmc_power_restore_host(struct mmc_host *host) { int ret; -#ifdef CONFIG_MMC_DEBUG - pr_info("%s: %s: powering up\n", mmc_hostname(host), __func__); -#endif + pr_debug("%s: %s: powering up\n", mmc_hostname(host), __func__); mmc_bus_get(host); diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index 55f543fd37c4..ca861091a776 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -107,6 +107,12 @@ static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { } void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq); bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq); +struct mmc_async_req; + +struct mmc_async_req *mmc_start_areq(struct mmc_host *host, + struct mmc_async_req *areq, + enum mmc_blk_status *ret_stat); + int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr, unsigned int arg); int mmc_can_erase(struct mmc_card *card); diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index a1fba5732d66..01e459a34f33 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -281,85 +281,6 @@ void mmc_remove_host_debugfs(struct mmc_host *host) debugfs_remove_recursive(host->debugfs_root); } -static int mmc_dbg_card_status_get(void *data, u64 *val) -{ - struct mmc_card *card = data; - u32 status; - int ret; - - mmc_get_card(card); - - ret = mmc_send_status(data, &status); - if (!ret) - *val = status; - - mmc_put_card(card); - - return ret; -} -DEFINE_SIMPLE_ATTRIBUTE(mmc_dbg_card_status_fops, mmc_dbg_card_status_get, - NULL, "%08llx\n"); - -#define EXT_CSD_STR_LEN 1025 - -static int mmc_ext_csd_open(struct inode *inode, struct file *filp) -{ - struct mmc_card *card = inode->i_private; - char *buf; - ssize_t n = 0; - u8 *ext_csd; - int err, i; - - buf = kmalloc(EXT_CSD_STR_LEN + 1, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - mmc_get_card(card); - err = mmc_get_ext_csd(card, &ext_csd); - mmc_put_card(card); - if (err) - goto out_free; - - for (i = 0; i < 512; i++) - n += sprintf(buf + n, "%02x", ext_csd[i]); - n += sprintf(buf + n, "\n"); - - if (n != EXT_CSD_STR_LEN) { - err = -EINVAL; - goto out_free; - } - - filp->private_data = buf; - kfree(ext_csd); - return 0; - -out_free: - kfree(buf); - return err; -} - -static ssize_t mmc_ext_csd_read(struct file *filp, char __user *ubuf, - size_t cnt, loff_t *ppos) -{ - char *buf = filp->private_data; - - return simple_read_from_buffer(ubuf, cnt, ppos, - buf, EXT_CSD_STR_LEN); -} - -static int mmc_ext_csd_release(struct inode *inode, struct file *file) -{ - kfree(file->private_data); - return 0; -} - -static const struct file_operations mmc_dbg_ext_csd_fops = { - .open = mmc_ext_csd_open, - .read = mmc_ext_csd_read, - .release = mmc_ext_csd_release, - .llseek = default_llseek, -}; - void mmc_add_card_debugfs(struct mmc_card *card) { struct mmc_host *host = card->host; @@ -382,16 +303,6 @@ void mmc_add_card_debugfs(struct mmc_card *card) if (!debugfs_create_x32("state", S_IRUSR, root, &card->state)) goto err; - if (mmc_card_mmc(card) || mmc_card_sd(card)) - if (!debugfs_create_file("status", S_IRUSR, root, card, - &mmc_dbg_card_status_fops)) - goto err; - - if (mmc_card_mmc(card)) - if (!debugfs_create_file("ext_csd", S_IRUSR, root, card, - &mmc_dbg_ext_csd_fops)) - goto err; - return; err: diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 1503412f826c..ad88deb2e8f3 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -111,6 +111,12 @@ void mmc_retune_hold(struct mmc_host *host) host->hold_retune += 1; } +void mmc_retune_hold_now(struct mmc_host *host) +{ + host->retune_now = 0; + host->hold_retune += 1; +} + void mmc_retune_release(struct mmc_host *host) { if (host->hold_retune) diff --git a/drivers/mmc/core/host.h b/drivers/mmc/core/host.h index fb6a76a03833..77d6f60d1bf9 100644 --- a/drivers/mmc/core/host.h +++ b/drivers/mmc/core/host.h @@ -19,6 +19,7 @@ void mmc_unregister_host_class(void); void mmc_retune_enable(struct mmc_host *host); void mmc_retune_disable(struct mmc_host *host); void mmc_retune_hold(struct mmc_host *host); +void mmc_retune_hold_now(struct mmc_host *host); void mmc_retune_release(struct mmc_host *host); int mmc_retune(struct mmc_host *host); void mmc_retune_pause(struct mmc_host *host); diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 2bae69e39544..a7eb623f8daa 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -41,11 +41,11 @@ static const unsigned char tran_mant[] = { 35, 40, 45, 50, 55, 60, 70, 80, }; -static const unsigned int tacc_exp[] = { +static const unsigned int taac_exp[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, }; -static const unsigned int tacc_mant[] = { +static const unsigned int taac_mant[] = { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, }; @@ -153,8 +153,8 @@ static int mmc_decode_csd(struct mmc_card *card) csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); m = UNSTUFF_BITS(resp, 115, 4); e = UNSTUFF_BITS(resp, 112, 3); - csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; - csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; + csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; + csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; m = UNSTUFF_BITS(resp, 99, 4); e = UNSTUFF_BITS(resp, 96, 3); @@ -1790,29 +1790,6 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, */ card->reenable_cmdq = card->ext_csd.cmdq_en; - /* - * The mandatory minimum values are defined for packed command. - * read: 5, write: 3 - */ - if (card->ext_csd.max_packed_writes >= 3 && - card->ext_csd.max_packed_reads >= 5 && - host->caps2 & MMC_CAP2_PACKED_CMD) { - err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_EXP_EVENTS_CTRL, - EXT_CSD_PACKED_EVENT_EN, - card->ext_csd.generic_cmd6_time); - if (err && err != -EBADMSG) - goto free_card; - if (err) { - pr_warn("%s: Enabling packed event failed\n", - mmc_hostname(card->host)); - card->ext_csd.packed_event_en = 0; - err = 0; - } else { - card->ext_csd.packed_event_en = 1; - } - } - if (!oldcard) host->card = card; diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 5f7c5920231a..54686ca4bfb7 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -83,6 +83,7 @@ int mmc_send_status(struct mmc_card *card, u32 *status) { return __mmc_send_status(card, status, MMC_CMD_RETRIES); } +EXPORT_SYMBOL_GPL(mmc_send_status); static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card) { @@ -946,7 +947,7 @@ static int mmc_read_bkops_status(struct mmc_card *card) /** * mmc_start_bkops - start BKOPS for supported cards * @card: MMC card to start BKOPS - * @form_exception: A flag to indicate if this function was + * @from_exception: A flag to indicate if this function was * called due to an exception raised by the card * * Start background operations whenever requested. diff --git a/drivers/mmc/core/mmc_test.c b/drivers/mmc/core/mmc_test.c index 7a304a6e5bf1..478869805b96 100644 --- a/drivers/mmc/core/mmc_test.c +++ b/drivers/mmc/core/mmc_test.c @@ -800,38 +800,44 @@ static int mmc_test_check_broken_result(struct mmc_test_card *test, return ret; } +struct mmc_test_req { + struct mmc_request mrq; + struct mmc_command sbc; + struct mmc_command cmd; + struct mmc_command stop; + struct mmc_command status; + struct mmc_data data; +}; + /* * Tests nonblock transfer with certain parameters */ -static void mmc_test_nonblock_reset(struct mmc_request *mrq, - struct mmc_command *cmd, - struct mmc_command *stop, - struct mmc_data *data) +static void mmc_test_req_reset(struct mmc_test_req *rq) +{ + memset(rq, 0, sizeof(struct mmc_test_req)); + + rq->mrq.cmd = &rq->cmd; + rq->mrq.data = &rq->data; + rq->mrq.stop = &rq->stop; +} + +static struct mmc_test_req *mmc_test_req_alloc(void) { - memset(mrq, 0, sizeof(struct mmc_request)); - memset(cmd, 0, sizeof(struct mmc_command)); - memset(data, 0, sizeof(struct mmc_data)); - memset(stop, 0, sizeof(struct mmc_command)); + struct mmc_test_req *rq = kmalloc(sizeof(*rq), GFP_KERNEL); - mrq->cmd = cmd; - mrq->data = data; - mrq->stop = stop; + if (rq) + mmc_test_req_reset(rq); + + return rq; } + + static int mmc_test_nonblock_transfer(struct mmc_test_card *test, struct scatterlist *sg, unsigned sg_len, unsigned dev_addr, unsigned blocks, unsigned blksz, int write, int count) { - struct mmc_request mrq1; - struct mmc_command cmd1; - struct mmc_command stop1; - struct mmc_data data1; - - struct mmc_request mrq2; - struct mmc_command cmd2; - struct mmc_command stop2; - struct mmc_data data2; - + struct mmc_test_req *rq1, *rq2; struct mmc_test_async_req test_areq[2]; struct mmc_async_req *done_areq; struct mmc_async_req *cur_areq = &test_areq[0].areq; @@ -843,12 +849,16 @@ static int mmc_test_nonblock_transfer(struct mmc_test_card *test, test_areq[0].test = test; test_areq[1].test = test; - mmc_test_nonblock_reset(&mrq1, &cmd1, &stop1, &data1); - mmc_test_nonblock_reset(&mrq2, &cmd2, &stop2, &data2); + rq1 = mmc_test_req_alloc(); + rq2 = mmc_test_req_alloc(); + if (!rq1 || !rq2) { + ret = RESULT_FAIL; + goto err; + } - cur_areq->mrq = &mrq1; + cur_areq->mrq = &rq1->mrq; cur_areq->err_check = mmc_test_check_result_async; - other_areq->mrq = &mrq2; + other_areq->mrq = &rq2->mrq; other_areq->err_check = mmc_test_check_result_async; for (i = 0; i < count; i++) { @@ -861,14 +871,10 @@ static int mmc_test_nonblock_transfer(struct mmc_test_card *test, goto err; } - if (done_areq) { - if (done_areq->mrq == &mrq2) - mmc_test_nonblock_reset(&mrq2, &cmd2, - &stop2, &data2); - else - mmc_test_nonblock_reset(&mrq1, &cmd1, - &stop1, &data1); - } + if (done_areq) + mmc_test_req_reset(container_of(done_areq->mrq, + struct mmc_test_req, mrq)); + swap(cur_areq, other_areq); dev_addr += blocks; } @@ -877,8 +883,9 @@ static int mmc_test_nonblock_transfer(struct mmc_test_card *test, if (status != MMC_BLK_SUCCESS) ret = RESULT_FAIL; - return ret; err: + kfree(rq1); + kfree(rq2); return ret; } @@ -2329,28 +2336,6 @@ static int mmc_test_reset(struct mmc_test_card *test) return RESULT_FAIL; } -struct mmc_test_req { - struct mmc_request mrq; - struct mmc_command sbc; - struct mmc_command cmd; - struct mmc_command stop; - struct mmc_command status; - struct mmc_data data; -}; - -static struct mmc_test_req *mmc_test_req_alloc(void) -{ - struct mmc_test_req *rq = kzalloc(sizeof(*rq), GFP_KERNEL); - - if (rq) { - rq->mrq.cmd = &rq->cmd; - rq->mrq.data = &rq->data; - rq->mrq.stop = &rq->stop; - } - - return rq; -} - static int mmc_test_send_status(struct mmc_test_card *test, struct mmc_command *cmd) { diff --git a/drivers/mmc/core/queue.h b/drivers/mmc/core/queue.h index 361b46408e0f..04fc89360a7a 100644 --- a/drivers/mmc/core/queue.h +++ b/drivers/mmc/core/queue.h @@ -36,10 +36,14 @@ struct mmc_blk_request { * enum mmc_drv_op - enumerates the operations in the mmc_queue_req * @MMC_DRV_OP_IOCTL: ioctl operation * @MMC_DRV_OP_BOOT_WP: write protect boot partitions + * @MMC_DRV_OP_GET_CARD_STATUS: get card status + * @MMC_DRV_OP_GET_EXT_CSD: get the EXT CSD from an eMMC card */ enum mmc_drv_op { MMC_DRV_OP_IOCTL, MMC_DRV_OP_BOOT_WP, + MMC_DRV_OP_GET_CARD_STATUS, + MMC_DRV_OP_GET_EXT_CSD, }; struct mmc_queue_req { @@ -51,7 +55,7 @@ struct mmc_queue_req { struct mmc_async_req areq; enum mmc_drv_op drv_op; int drv_op_result; - struct mmc_blk_ioc_data **idata; + void *drv_op_data; unsigned int ioc_count; }; diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index a1b0aa14d5e3..4fd1620b732d 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -39,11 +39,11 @@ static const unsigned char tran_mant[] = { 35, 40, 45, 50, 55, 60, 70, 80, }; -static const unsigned int tacc_exp[] = { +static const unsigned int taac_exp[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, }; -static const unsigned int tacc_mant[] = { +static const unsigned int taac_mant[] = { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, }; @@ -111,8 +111,8 @@ static int mmc_decode_csd(struct mmc_card *card) case 0: m = UNSTUFF_BITS(resp, 115, 4); e = UNSTUFF_BITS(resp, 112, 3); - csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; - csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; + csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; + csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; m = UNSTUFF_BITS(resp, 99, 4); e = UNSTUFF_BITS(resp, 96, 3); @@ -148,8 +148,8 @@ static int mmc_decode_csd(struct mmc_card *card) */ mmc_card_set_blockaddr(card); - csd->tacc_ns = 0; /* Unused */ - csd->tacc_clks = 0; /* Unused */ + csd->taac_ns = 0; /* Unused */ + csd->taac_clks = 0; /* Unused */ m = UNSTUFF_BITS(resp, 99, 4); e = UNSTUFF_BITS(resp, 96, 3); |