/*
* Checks if media is still valid.
*/
static int sd_revalidate_disk(struct gendisk *disk)
{
struct sd_host *host = disk->private_data;
int retval = 0;
/* report missing medium for zombies */
if (!host) {
retval = -ENOMEDIUM;
goto out;
}
/* the block layer likes to call us multiple times... */
if (!sd_media_changed(host->disk))
goto out;
/* get the card into a known status */
retval = sd_welcome_card(host);
if (retval < 0 || sd_card_is_bad(host)) {
retval = -ENOMEDIUM;
goto out;
}
/* inform the block layer about various sizes */
blk_queue_logical_block_size(host->queue, 1 << KERNEL_SECTOR_SHIFT);
set_capacity(host->disk, host->card.csd.capacity /*<< (host->card.csd.read_blkbits - KERNEL_SECTOR_SHIFT)*/);
clear_bit(__SD_MEDIA_CHANGED, &host->flags);
out:
return retval;
}
static int sd_welcome_card(struct sd_host *host)
{
int retval;
/* soft reset the card */
retval = sd_reset_sequence(host);
if (retval < 0 || sd_card_is_bad(host))
goto out;
/* read Operating Conditions Register */
retval = sd_read_ocr(host);
if (retval < 0)
goto err_bad_card;
/* refuse to drive cards reporting voltage ranges out of scope */
if (!(host->ocr & host->ocr_avail)) {
sd_printk(KERN_WARNING, "reported OCR (%08x)"
" indicates that it is not safe to use this"
" card with a GameCube\n", host->ocr);
retval = -ENODEV;
goto err_bad_card;
}
/* read and decode the Card Specific Data */
retval = sd_read_csd(host);
if (retval < 0)
goto err_bad_card;
mmc_decode_csd(&host->card);
/* calculate some card access related timeouts */
sd_calc_timeouts(host);
/* read and decode the Card Identification Data */
retval = sd_read_cid(host);
if (retval < 0)
goto err_bad_card;
mmc_decode_cid(&host->card);
sd_printk(KERN_INFO, "slot%d: descr \"%s\", size %luk, block %ub,"
" serial %08x\n",
to_channel(exi_get_exi_channel(host->exi_device)),
host->card.cid.prod_name,
(unsigned long)((host->card.csd.capacity *
(1 << host->card.csd.read_blkbits)) / 1024),
1 << host->card.csd.read_blkbits,
host->card.cid.serial);
retval = 0;
goto out;
err_bad_card:
sd_card_set_bad(host);
out:
return retval;
}
