diff options
Diffstat (limited to 'drivers/mmc/core/block.c')
-rw-r--r-- | drivers/mmc/core/block.c | 164 |
1 files changed, 79 insertions, 85 deletions
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index ce8aed562929..6a15fdf6e5f2 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -128,8 +128,6 @@ struct mmc_blk_data { * track of the current selected device partition. */ unsigned int part_curr; - struct device_attribute force_ro; - struct device_attribute power_ro_lock; int area_type; /* debugfs files (only in main mmc_blk_data) */ @@ -281,6 +279,9 @@ out_put: return count; } +static DEVICE_ATTR(ro_lock_until_next_power_on, 0, + power_ro_lock_show, power_ro_lock_store); + static ssize_t force_ro_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -313,6 +314,44 @@ out: return ret; } +static DEVICE_ATTR(force_ro, 0644, force_ro_show, force_ro_store); + +static struct attribute *mmc_disk_attrs[] = { + &dev_attr_force_ro.attr, + &dev_attr_ro_lock_until_next_power_on.attr, + NULL, +}; + +static umode_t mmc_disk_attrs_is_visible(struct kobject *kobj, + struct attribute *a, int n) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev)); + umode_t mode = a->mode; + + if (a == &dev_attr_ro_lock_until_next_power_on.attr && + (md->area_type & MMC_BLK_DATA_AREA_BOOT) && + md->queue.card->ext_csd.boot_ro_lockable) { + mode = S_IRUGO; + if (!(md->queue.card->ext_csd.boot_ro_lock & + EXT_CSD_BOOT_WP_B_PWR_WP_DIS)) + mode |= S_IWUSR; + } + + mmc_blk_put(md); + return mode; +} + +static const struct attribute_group mmc_disk_attr_group = { + .is_visible = mmc_disk_attrs_is_visible, + .attrs = mmc_disk_attrs, +}; + +static const struct attribute_group *mmc_disk_attr_groups[] = { + &mmc_disk_attr_group, + NULL, +}; + static int mmc_blk_open(struct block_device *bdev, fmode_t mode) { struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk); @@ -792,6 +831,26 @@ static int mmc_blk_compat_ioctl(struct block_device *bdev, fmode_t mode, } #endif +static int mmc_blk_alternative_gpt_sector(struct gendisk *disk, + sector_t *sector) +{ + struct mmc_blk_data *md; + int ret; + + md = mmc_blk_get(disk); + if (!md) + return -EINVAL; + + if (md->queue.card) + ret = mmc_card_alternative_gpt_sector(md->queue.card, sector); + else + ret = -ENODEV; + + mmc_blk_put(md); + + return ret; +} + static const struct block_device_operations mmc_bdops = { .open = mmc_blk_open, .release = mmc_blk_release, @@ -801,6 +860,7 @@ static const struct block_device_operations mmc_bdops = { #ifdef CONFIG_COMPAT .compat_ioctl = mmc_blk_compat_ioctl, #endif + .alternative_gpt_sector = mmc_blk_alternative_gpt_sector, }; static int mmc_blk_part_switch_pre(struct mmc_card *card, @@ -2289,7 +2349,8 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, sector_t size, bool default_ro, const char *subname, - int area_type) + int area_type, + unsigned int part_type) { struct mmc_blk_data *md; int devidx, ret; @@ -2336,6 +2397,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, kref_init(&md->kref); md->queue.blkdata = md; + md->part_type = part_type; md->disk->major = MMC_BLOCK_MAJOR; md->disk->minors = perdev_minors; @@ -2388,6 +2450,10 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, md->disk->disk_name, mmc_card_id(card), mmc_card_name(card), cap_str, md->read_only ? "(ro)" : ""); + /* used in ->open, must be set before add_disk: */ + if (area_type == MMC_BLK_DATA_AREA_MAIN) + dev_set_drvdata(&card->dev, md); + device_add_disk(md->parent, md->disk, mmc_disk_attr_groups); return md; err_kfree: @@ -2417,7 +2483,7 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card) } return mmc_blk_alloc_req(card, &card->dev, size, false, NULL, - MMC_BLK_DATA_AREA_MAIN); + MMC_BLK_DATA_AREA_MAIN, 0); } static int mmc_blk_alloc_part(struct mmc_card *card, @@ -2431,10 +2497,9 @@ static int mmc_blk_alloc_part(struct mmc_card *card, struct mmc_blk_data *part_md; part_md = mmc_blk_alloc_req(card, disk_to_dev(md->disk), size, default_ro, - subname, area_type); + subname, area_type, part_type); if (IS_ERR(part_md)) return PTR_ERR(part_md); - part_md->part_type = part_type; list_add(&part_md->part, &md->part); return 0; @@ -2635,27 +2700,13 @@ static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md) static void mmc_blk_remove_req(struct mmc_blk_data *md) { - struct mmc_card *card; - - if (md) { - /* - * Flush remaining requests and free queues. It - * is freeing the queue that stops new requests - * from being accepted. - */ - card = md->queue.card; - if (md->disk->flags & GENHD_FL_UP) { - device_remove_file(disk_to_dev(md->disk), &md->force_ro); - if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) && - card->ext_csd.boot_ro_lockable) - device_remove_file(disk_to_dev(md->disk), - &md->power_ro_lock); - - del_gendisk(md->disk); - } - mmc_cleanup_queue(&md->queue); - mmc_blk_put(md); - } + /* + * Flush remaining requests and free queues. It is freeing the queue + * that stops new requests from being accepted. + */ + del_gendisk(md->disk); + mmc_cleanup_queue(&md->queue); + mmc_blk_put(md); } static void mmc_blk_remove_parts(struct mmc_card *card, @@ -2679,51 +2730,6 @@ static void mmc_blk_remove_parts(struct mmc_card *card, } } -static int mmc_add_disk(struct mmc_blk_data *md) -{ - int ret; - struct mmc_card *card = md->queue.card; - - device_add_disk(md->parent, md->disk, NULL); - md->force_ro.show = force_ro_show; - md->force_ro.store = force_ro_store; - sysfs_attr_init(&md->force_ro.attr); - md->force_ro.attr.name = "force_ro"; - md->force_ro.attr.mode = S_IRUGO | S_IWUSR; - ret = device_create_file(disk_to_dev(md->disk), &md->force_ro); - if (ret) - goto force_ro_fail; - - if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) && - card->ext_csd.boot_ro_lockable) { - umode_t mode; - - if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_DIS) - mode = S_IRUGO; - else - mode = S_IRUGO | S_IWUSR; - - md->power_ro_lock.show = power_ro_lock_show; - md->power_ro_lock.store = power_ro_lock_store; - sysfs_attr_init(&md->power_ro_lock.attr); - md->power_ro_lock.attr.mode = mode; - md->power_ro_lock.attr.name = - "ro_lock_until_next_power_on"; - ret = device_create_file(disk_to_dev(md->disk), - &md->power_ro_lock); - if (ret) - goto power_ro_lock_fail; - } - return ret; - -power_ro_lock_fail: - device_remove_file(disk_to_dev(md->disk), &md->force_ro); -force_ro_fail: - del_gendisk(md->disk); - - return ret; -} - #ifdef CONFIG_DEBUG_FS static int mmc_dbg_card_status_get(void *data, u64 *val) @@ -2889,7 +2895,7 @@ static void mmc_blk_remove_debugfs(struct mmc_card *card, static int mmc_blk_probe(struct mmc_card *card) { - struct mmc_blk_data *md, *part_md; + struct mmc_blk_data *md; int ret = 0; /* @@ -2917,18 +2923,6 @@ static int mmc_blk_probe(struct mmc_card *card) if (ret) goto out; - dev_set_drvdata(&card->dev, md); - - ret = mmc_add_disk(md); - if (ret) - goto out; - - list_for_each_entry(part_md, &md->part, part) { - ret = mmc_add_disk(part_md); - if (ret) - goto out; - } - /* Add two debugfs entries */ mmc_blk_add_debugfs(card, md); |