static DEFINE_IDA(mmc_blk_ida);
static DEFINE_IDA(mmc_rpmb_ida);
+struct mmc_blk_busy_data {
+ struct mmc_card *card;
+ u32 status;
+};
+
/*
* There is one mmc_blk_data per slot.
*/
* 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) */
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)
{
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);
return 0;
}
-static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms,
- u32 *resp_errs)
-{
- unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
- int err = 0;
- u32 status;
-
- do {
- bool done = time_after(jiffies, timeout);
-
- err = __mmc_send_status(card, &status, 5);
- if (err) {
- dev_err(mmc_dev(card->host),
- "error %d requesting status\n", err);
- return err;
- }
-
- /* Accumulate any response error bits seen */
- if (resp_errs)
- *resp_errs |= status;
-
- /*
- * Timeout if the device never becomes ready for data and never
- * leaves the program state.
- */
- if (done) {
- dev_err(mmc_dev(card->host),
- "Card stuck in wrong state! %s status: %#x\n",
- __func__, status);
- return -ETIMEDOUT;
- }
- } while (!mmc_ready_for_data(status));
-
- return err;
-}
-
static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md,
struct mmc_blk_ioc_data *idata)
{
return mmc_sanitize(card, idata->ic.cmd_timeout_ms);
mmc_wait_for_req(card->host, &mrq);
+ memcpy(&idata->ic.response, cmd.resp, sizeof(cmd.resp));
if (cmd.error) {
dev_err(mmc_dev(card->host), "%s: cmd error %d\n",
if (idata->ic.postsleep_min_us)
usleep_range(idata->ic.postsleep_min_us, idata->ic.postsleep_max_us);
- memcpy(&(idata->ic.response), cmd.resp, sizeof(cmd.resp));
-
if (idata->rpmb || (cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) {
/*
* Ensure RPMB/R1B command has completed by polling CMD13
* "Send Status".
*/
- err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, NULL);
+ err = mmc_poll_for_busy(card, MMC_BLK_TIMEOUT_MS, false,
+ MMC_BUSY_IO);
}
return err;
}
#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,
#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,
mmc_blk_send_stop(card, timeout);
- err = card_busy_detect(card, timeout, NULL);
+ err = mmc_poll_for_busy(card, timeout, false, MMC_BUSY_IO);
mmc_retune_release(card->host);
brq->data.error || brq->cmd.resp[0] & CMD_ERRORS;
}
+static int mmc_blk_busy_cb(void *cb_data, bool *busy)
+{
+ struct mmc_blk_busy_data *data = cb_data;
+ u32 status = 0;
+ int err;
+
+ err = mmc_send_status(data->card, &status);
+ if (err)
+ return err;
+
+ /* Accumulate response error bits. */
+ data->status |= status;
+
+ *busy = !mmc_ready_for_data(status);
+ return 0;
+}
+
static int mmc_blk_card_busy(struct mmc_card *card, struct request *req)
{
struct mmc_queue_req *mqrq = req_to_mmc_queue_req(req);
- u32 status = 0;
+ struct mmc_blk_busy_data cb_data;
int err;
if (mmc_host_is_spi(card->host) || rq_data_dir(req) == READ)
return 0;
- err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, &status);
+ cb_data.card = card;
+ cb_data.status = 0;
+ err = __mmc_poll_for_busy(card, MMC_BLK_TIMEOUT_MS, &mmc_blk_busy_cb,
+ &cb_data);
/*
* Do not assume data transferred correctly if there are any error bits
* set.
*/
- if (status & mmc_blk_stop_err_bits(&mqrq->brq)) {
+ if (cb_data.status & mmc_blk_stop_err_bits(&mqrq->brq)) {
mqrq->brq.data.bytes_xfered = 0;
err = err ? err : -EIO;
}
/* Copy the exception bit so it will be seen later on */
- if (mmc_card_mmc(card) && status & R1_EXCEPTION_EVENT)
+ if (mmc_card_mmc(card) && cb_data.status & R1_EXCEPTION_EVENT)
mqrq->brq.cmd.resp[0] |= R1_EXCEPTION_EVENT;
return err;
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;
kref_init(&md->kref);
md->queue.blkdata = md;
+ md->part_type = part_type;
md->disk->major = MMC_BLOCK_MAJOR;
md->disk->minors = perdev_minors;
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:
}
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,
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;
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,
}
}
-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)
static int mmc_blk_probe(struct mmc_card *card)
{
- struct mmc_blk_data *md, *part_md;
+ struct mmc_blk_data *md;
int ret = 0;
/*
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);
projects / linux-2.6-microblaze.git / blobdiff