/*
- * linux/drivers/mmc/mmc.c
+ * linux/drivers/mmc/core/mmc.c
*
* Copyright (C) 2003-2004 Russell King, All Rights Reserved.
* Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
#include "core.h"
#include "sysfs.h"
+#include "bus.h"
#include "mmc_ops.h"
static const unsigned int tran_exp[] = {
break;
default:
- printk("%s: card has unknown MMCA version %d\n",
+ printk(KERN_ERR "%s: card has unknown MMCA version %d\n",
mmc_hostname(card->host), card->csd.mmca_vsn);
return -EINVAL;
}
*/
csd_struct = UNSTUFF_BITS(resp, 126, 2);
if (csd_struct != 1 && csd_struct != 2) {
- printk("%s: unrecognised CSD structure version %d\n",
+ printk(KERN_ERR "%s: unrecognised CSD structure version %d\n",
mmc_hostname(card->host), csd_struct);
return -EINVAL;
}
{
int err;
u8 *ext_csd;
+ unsigned int ext_csd_struct;
BUG_ON(!card);
- err = MMC_ERR_FAILED;
-
if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
- return MMC_ERR_NONE;
+ return 0;
/*
* As the ext_csd is so large and mostly unused, we don't store the
ext_csd = kmalloc(512, GFP_KERNEL);
if (!ext_csd) {
printk(KERN_ERR "%s: could not allocate a buffer to "
- "receive the ext_csd. mmc v4 cards will be "
- "treated as v3.\n", mmc_hostname(card->host));
- return MMC_ERR_FAILED;
+ "receive the ext_csd.\n", mmc_hostname(card->host));
+ return -ENOMEM;
}
err = mmc_send_ext_csd(card, ext_csd);
- if (err != MMC_ERR_NONE) {
+ if (err) {
+ /*
+ * We all hosts that cannot perform the command
+ * to fail more gracefully
+ */
+ if (err != -EINVAL)
+ goto out;
+
/*
* High capacity cards should have this "magic" size
* stored in their CSD.
"EXT_CSD, performance might "
"suffer.\n",
mmc_hostname(card->host));
- err = MMC_ERR_NONE;
+ err = 0;
}
+
goto out;
}
- card->ext_csd.sectors =
- ext_csd[EXT_CSD_SEC_CNT + 0] << 0 |
- ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
- ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
- ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
- if (card->ext_csd.sectors)
- mmc_card_set_blockaddr(card);
+ ext_csd_struct = ext_csd[EXT_CSD_REV];
+ if (ext_csd_struct > 2) {
+ printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
+ "version %d\n", mmc_hostname(card->host),
+ ext_csd_struct);
+ return -EINVAL;
+ }
+
+ if (ext_csd_struct >= 2) {
+ card->ext_csd.sectors =
+ ext_csd[EXT_CSD_SEC_CNT + 0] << 0 |
+ ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
+ ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
+ ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
+ if (card->ext_csd.sectors)
+ mmc_card_set_blockaddr(card);
+ }
switch (ext_csd[EXT_CSD_CARD_TYPE]) {
case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26:
* In the case of a resume, "curcard" will contain the card
* we're trying to reinitialise.
*/
-static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
+static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
unsigned int max_dtr;
BUG_ON(!host);
- BUG_ON(!host->claimed);
+ WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
- if (err != MMC_ERR_NONE)
+ if (err)
goto err;
+ /*
+ * For SPI, enable CRC as appropriate.
+ */
+ if (mmc_host_is_spi(host)) {
+ err = mmc_spi_set_crc(host, use_spi_crc);
+ if (err)
+ goto err;
+ }
+
/*
* Fetch CID from card.
*/
- err = mmc_all_send_cid(host, cid);
- if (err != MMC_ERR_NONE)
+ if (mmc_host_is_spi(host))
+ err = mmc_send_cid(host, cid);
+ else
+ err = mmc_all_send_cid(host, cid);
+ if (err)
goto err;
if (oldcard) {
- if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
+ if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
+ err = -ENOENT;
goto err;
+ }
card = oldcard;
} else {
* Allocate card structure.
*/
card = mmc_alloc_card(host);
- if (IS_ERR(card))
+ if (IS_ERR(card)) {
+ err = PTR_ERR(card);
goto err;
+ }
card->type = MMC_TYPE_MMC;
card->rca = 1;
}
/*
- * Set card RCA.
+ * For native busses: set card RCA and quit open drain mode.
*/
- err = mmc_set_relative_addr(card);
- if (err != MMC_ERR_NONE)
- goto free_card;
+ if (!mmc_host_is_spi(host)) {
+ err = mmc_set_relative_addr(card);
+ if (err)
+ goto free_card;
- mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+ mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+ }
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
- if (err != MMC_ERR_NONE)
+ if (err)
goto free_card;
err = mmc_decode_csd(card);
- if (err < 0)
+ if (err)
goto free_card;
err = mmc_decode_cid(card);
- if (err < 0)
+ if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
- err = mmc_select_card(card);
- if (err != MMC_ERR_NONE)
- goto free_card;
+ if (!mmc_host_is_spi(host)) {
+ err = mmc_select_card(card);
+ if (err)
+ goto free_card;
+ }
if (!oldcard) {
/*
- * Fetch and process extened CSD.
+ * Fetch and process extended CSD.
*/
err = mmc_read_ext_csd(card);
- if (err != MMC_ERR_NONE)
+ if (err)
goto free_card;
}
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
- if (err != MMC_ERR_NONE)
+ if (err)
goto free_card;
mmc_card_set_highspeed(card);
(host->caps & MMC_CAP_4_BIT_DATA)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_4);
- if (err != MMC_ERR_NONE)
+ if (err)
goto free_card;
mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
if (!oldcard)
host->card = card;
- return MMC_ERR_NONE;
+ return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
- return MMC_ERR_FAILED;
+ return err;
}
/*
mmc_release_host(host);
- if (err != MMC_ERR_NONE) {
- mmc_remove_card(host->card);
- host->card = NULL;
+ if (err) {
+ mmc_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
}
}
+MMC_ATTR_FN(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
+ card->raw_cid[2], card->raw_cid[3]);
+MMC_ATTR_FN(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
+ card->raw_csd[2], card->raw_csd[3]);
+MMC_ATTR_FN(date, "%02d/%04d\n", card->cid.month, card->cid.year);
+MMC_ATTR_FN(fwrev, "0x%x\n", card->cid.fwrev);
+MMC_ATTR_FN(hwrev, "0x%x\n", card->cid.hwrev);
+MMC_ATTR_FN(manfid, "0x%06x\n", card->cid.manfid);
+MMC_ATTR_FN(name, "%s\n", card->cid.prod_name);
+MMC_ATTR_FN(oemid, "0x%04x\n", card->cid.oemid);
+MMC_ATTR_FN(serial, "0x%08x\n", card->cid.serial);
+
+static struct device_attribute mmc_dev_attrs[] = {
+ MMC_ATTR_RO(cid),
+ MMC_ATTR_RO(csd),
+ MMC_ATTR_RO(date),
+ MMC_ATTR_RO(fwrev),
+ MMC_ATTR_RO(hwrev),
+ MMC_ATTR_RO(manfid),
+ MMC_ATTR_RO(name),
+ MMC_ATTR_RO(oemid),
+ MMC_ATTR_RO(serial),
+ __ATTR_NULL,
+};
+
+/*
+ * Adds sysfs entries as relevant.
+ */
+static int mmc_sysfs_add(struct mmc_host *host, struct mmc_card *card)
+{
+ int ret;
+
+ ret = mmc_add_attrs(card, mmc_dev_attrs);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * Removes the sysfs entries added by mmc_sysfs_add().
+ */
+static void mmc_sysfs_remove(struct mmc_host *host, struct mmc_card *card)
+{
+ mmc_remove_attrs(card, mmc_dev_attrs);
+}
+
#ifdef CONFIG_MMC_UNSAFE_RESUME
/*
BUG_ON(!host->card);
mmc_claim_host(host);
- mmc_deselect_cards(host);
+ if (!mmc_host_is_spi(host))
+ mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
}
BUG_ON(!host->card);
mmc_claim_host(host);
+ err = mmc_init_card(host, host->ocr, host->card);
+ mmc_release_host(host);
- err = mmc_sd_init_card(host, host->ocr, host->card);
- if (err != MMC_ERR_NONE) {
- mmc_remove_card(host->card);
- host->card = NULL;
+ if (err) {
+ mmc_remove(host);
+ mmc_claim_host(host);
mmc_detach_bus(host);
+ mmc_release_host(host);
}
- mmc_release_host(host);
}
#else
static const struct mmc_bus_ops mmc_ops = {
.remove = mmc_remove,
.detect = mmc_detect,
+ .sysfs_add = mmc_sysfs_add,
+ .sysfs_remove = mmc_sysfs_remove,
.suspend = mmc_suspend,
.resume = mmc_resume,
};
int err;
BUG_ON(!host);
- BUG_ON(!host->claimed);
+ WARN_ON(!host->claimed);
mmc_attach_bus(host, &mmc_ops);
+ /*
+ * We need to get OCR a different way for SPI.
+ */
+ if (mmc_host_is_spi(host)) {
+ err = mmc_spi_read_ocr(host, 1, &ocr);
+ if (err)
+ goto err;
+ }
+
/*
* Sanity check the voltages that the card claims to
* support.
/*
* Can we support the voltage of the card?
*/
- if (!host->ocr)
+ if (!host->ocr) {
+ err = -EINVAL;
goto err;
+ }
/*
* Detect and init the card.
*/
- err = mmc_sd_init_card(host, host->ocr, NULL);
- if (err != MMC_ERR_NONE)
+ err = mmc_init_card(host, host->ocr, NULL);
+ if (err)
goto err;
mmc_release_host(host);
- err = mmc_register_card(host->card);
+ err = mmc_add_card(host->card);
if (err)
- goto reclaim_host;
+ goto remove_card;
return 0;
-reclaim_host:
- mmc_claim_host(host);
+remove_card:
mmc_remove_card(host->card);
host->card = NULL;
+ mmc_claim_host(host);
err:
mmc_detach_bus(host);
mmc_release_host(host);
- return 0;
+ printk(KERN_ERR "%s: error %d whilst initialising MMC card\n",
+ mmc_hostname(host), err);
+
+ return err;
}
projects / linux-2.6-omap-h63xx.git / blobdiff