/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
unsigned int max_dtr;
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_read_ext_csd(card);
if (err)
goto free_card;
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Activate wide bus (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
unsigned ext_csd_bit, bus_width;
if ((host->caps & MMC_CAP_8_BIT_DATA) &&
!(mmc_bustest(host, card, MMC_BUS_WIDTH_8))) {
pr_info("Setting the bus width to 8 bit\n");
ext_csd_bit = EXT_CSD_BUS_WIDTH_8;
bus_width = MMC_BUS_WIDTH_8;
} else if (!(mmc_bustest(host, card, MMC_BUS_WIDTH_4))) {
pr_info("Setting the bus width to 4 bit\n");
ext_csd_bit = EXT_CSD_BUS_WIDTH_4;
bus_width = MMC_BUS_WIDTH_4;
} else {
pr_info("Setting the bus width to 1 bit\n");
ext_csd_bit = EXT_CSD_BUS_WIDTH_1;
bus_width = MMC_BUS_WIDTH_1;
}
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, ext_csd_bit);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width);
err = 0;
} else {
mmc_set_bus_width(card->host, bus_width);
}
}
if (!oldcard)
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
unsigned int max_dtr;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries;
#endif
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/*
* If SD_SEND_IF_COND indicates an SD 2.0
* compliant card and we should set bit 30
* of the ocr to indicate that we can handle
* block-addressed SDHC cards.
*/
err = mmc_send_if_cond(host, ocr);
if (!err)
ocr |= 1 << 30;
err = mmc_send_app_op_cond(host, ocr, NULL);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &sd_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_SD;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: get card RCA and quit open drain mode.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_send_relative_addr(host, &card->rca);
if (err)
goto free_card;
mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
mmc_decode_cid(card);
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch SCR from card.
*/
err = mmc_app_send_scr(card, card->raw_scr);
if (err)
goto free_card;
err = mmc_decode_scr(card);
if (err < 0)
goto free_card;
/*
* Fetch switch information from card.
*/
#ifdef CONFIG_MMC_PARANOID_SD_INIT
for (retries = 1; retries <= 3; retries++) {
err = mmc_read_switch(card);
if (!err) {
if (retries > 1) {
printk(KERN_WARNING
"%s: recovered\n",
mmc_hostname(host));
}
break;
} else {
printk(KERN_WARNING
"%s: read switch failed (attempt %d)\n",
mmc_hostname(host), retries);
}
}
#else
err = mmc_read_switch(card);
#endif
if (err)
goto free_card;
}
/*
* Attempt to change to high-speed (if supported)
*/
err = mmc_switch_hs(card);
if (err)
goto free_card;
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->sw_caps.hs_max_dtr)
max_dtr = card->sw_caps.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Switch to wider bus (if supported).
*/
if ((host->caps & MMC_CAP_4_BIT_DATA) &&
(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
if (err)
goto free_card;
mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
}
/*
* Check if read-only switch is active.
*/
if (!oldcard) {
if (!host->ops->get_ro || host->ops->get_ro(host) < 0) {
printk(KERN_WARNING "%s: host does not "
"support reading read-only "
"switch. assuming write-enable.\n",
mmc_hostname(host));
} else {
if (host->ops->get_ro(host) > 0)
mmc_card_set_readonly(card);
}
}
if (!oldcard)
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err, ddr = 0;
u32 cid[4];
unsigned int max_dtr;
u32 rocr;
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_read_ext_csd(card);
if (err)
goto free_card;
/* If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
mmc_card_set_blockaddr(card);
/* Erase size depends on CSD and Extended CSD */
mmc_set_erase_size(card);
}
/*
* If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF
* bit. This bit will be lost everytime after a reset or power off.
*/
if (card->ext_csd.enhanced_area_en) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_ERASE_GROUP_DEF, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
err = 0;
/*
* Just disable enhanced area off & sz
* will try to enable ERASE_GROUP_DEF
* during next time reinit
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
} else {
card->ext_csd.erase_group_def = 1;
/*
* enable ERASE_GRP_DEF successfully.
* This will affect the erase size, so
* here need to reset erase size
*/
mmc_set_erase_size(card);
}
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Indicate DDR mode (if supported).
*/
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
&& (host->caps & (MMC_CAP_1_8V_DDR)))
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
&& (host->caps & (MMC_CAP_1_2V_DDR)))
ddr = MMC_1_2V_DDR_MODE;
}
/*
* Activate wide bus and DDR (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
static unsigned ext_csd_bits[][2] = {
{ EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 },
{ EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 },
{ EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 },
};
static unsigned bus_widths[] = {
MMC_BUS_WIDTH_8,
MMC_BUS_WIDTH_4,
MMC_BUS_WIDTH_1
};
unsigned idx, bus_width = 0;
if (host->caps & MMC_CAP_8_BIT_DATA)
idx = 0;
else
idx = 1;
for (; idx < ARRAY_SIZE(bus_widths); idx++) {
bus_width = bus_widths[idx];
if (bus_width == MMC_BUS_WIDTH_1)
ddr = 0; /* no DDR for 1-bit width */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0]);
if (!err) {
mmc_set_bus_width_ddr(card->host,
bus_width, MMC_SDR_MODE);
/*
* If controller can't handle bus width test,
* use the highest bus width to maintain
* compatibility with previous MMC behavior.
*/
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
break;
err = mmc_bus_test(card, bus_width);
if (!err)
break;
}
}
if (!err && ddr) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1]);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width, ddr);
goto free_card;
} else if (ddr) {
mmc_card_set_ddr_mode(card);
mmc_set_bus_width_ddr(card->host, bus_width, ddr);
}
}
if (!oldcard)
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
/*
* Given a 128-bit response, decode to our card CSD structure.
*/
static int mmc_decode_csd(struct mmc_card *card)
{
struct mmc_csd *csd = &card->csd;
unsigned int e, m, csd_struct;
u32 *resp = card->raw_csd;
/*
* We only understand CSD structure v1.1 and v1.2.
* v1.2 has extra information in bits 15, 11 and 10.
*/
csd_struct = UNSTUFF_BITS(resp, 126, 2);
#if defined(CONFIG_MACH_OMAP3630_EDP1) || defined(CONFIG_MACH_OMAP3621_EDP1) || defined(CONFIG_MACH_OMAP3621_BOXER) || defined(CONFIG_MACH_OMAP3621_EVT1A) || defined(CONFIG_MACH_OMAP3621_GOSSAMER)
/* To recognize Boxer board eMMC */
if (csd_struct != 1 && csd_struct != 2 && csd_struct != 3) {
#else
if (csd_struct != 1 && csd_struct != 2) {
#endif
printk(KERN_ERR "%s: unrecognised CSD structure version %d\n",
mmc_hostname(card->host), csd_struct);
return -EINVAL;
}
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;
m = UNSTUFF_BITS(resp, 99, 4);
e = UNSTUFF_BITS(resp, 96, 3);
csd->max_dtr = tran_exp[e] * tran_mant[m];
csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
e = UNSTUFF_BITS(resp, 47, 3);
m = UNSTUFF_BITS(resp, 62, 12);
csd->capacity = (1 + m) << (e + 2);
csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4);
csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
return 0;
}
/*
* Read and decode extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card)
{
int err;
u8 *ext_csd;
BUG_ON(!card);
if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
return 0;
/*
* As the ext_csd is so large and mostly unused, we don't store the
* raw block in mmc_card.
*/
ext_csd = kmalloc(512, GFP_KERNEL);
if (!ext_csd) {
printk(KERN_ERR "%s: could not allocate a buffer to "
"receive the ext_csd.\n", mmc_hostname(card->host));
return -ENOMEM;
}
err = mmc_send_ext_csd(card, ext_csd);
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.
*/
if (card->csd.capacity == (4096 * 512)) {
printk(KERN_ERR "%s: unable to read EXT_CSD "
"on a possible high capacity card. "
"Card will be ignored.\n",
mmc_hostname(card->host));
} else {
printk(KERN_WARNING "%s: unable to read "
"EXT_CSD, performance might "
"suffer.\n",
mmc_hostname(card->host));
err = 0;
}
goto out;
}
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
#if defined(CONFIG_MACH_OMAP3630_EDP1) || defined(CONFIG_MACH_OMAP3621_EDP1) || defined(CONFIG_MACH_OMAP3621_BOXER) || defined(CONFIG_MACH_OMAP3621_EVT1A) || defined(CONFIG_MACH_OMAP3621_GOSSAMER)
/* To recognize Boxer board eMMC */
if (card->ext_csd.rev > 5) {
#else
if (card->ext_csd.rev > 2) {
#endif
printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
card->ext_csd.rev);
err = -EINVAL;
goto out;
}
#ifdef CONFIG_HC_Broken_eMMC_ZOOM2
/*
* Hack: eMMC on Zoom2 seems to have a lower EXT_CSD Rev.
* This is incorrect as it is an HC card. The card becomes
* unusable if not set to blockaddr mode.
* The low level driver sets up the unused bit for MMC2 on Zoom2.
* Revert this hack once it is fixed in the card.
*/
if (card->host->unused) {
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);
} else
#endif
if (card->ext_csd.rev >= 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 (mmc_card_blockaddr(card))
mmc_card_set_blockaddr(card);
}
/* disable DDR detection */
ext_csd[EXT_CSD_CARD_TYPE] &= EXT_CSD_CARD_TYPE_MASK;
switch (ext_csd[EXT_CSD_CARD_TYPE]) {
case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
break;
case EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 26000000;
break;
default:
/* MMC v4 spec says this cannot happen */
printk(KERN_WARNING "%s: card is mmc v4 but doesn't "
"support any high-speed modes.\n",
mmc_hostname(card->host));
goto out;
}
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
/* Sleep / awake timeout in 100ns units */
if (sa_shift > 0 && sa_shift <= 0x17)
card->ext_csd.sa_timeout =
1 << ext_csd[EXT_CSD_S_A_TIMEOUT];
else{
card->ext_csd.sa_timeout = MMC_SLEEP_TIMEOUT_DEFAULT;
printk(KERN_WARNING "%s: card's S_A_TIMEOUT is out of range.\n",mmc_hostname(card->host));
}
}
out:
kfree(ext_csd);
return err;
}
MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
card->raw_cid[2], card->raw_cid[3]);
MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
card->raw_csd[2], card->raw_csd[3]);
MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year);
MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev);
MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev);
MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid);
MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name);
MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid);
MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
static struct attribute *mmc_std_attrs[] = {
&dev_attr_cid.attr,
&dev_attr_csd.attr,
&dev_attr_date.attr,
&dev_attr_fwrev.attr,
&dev_attr_hwrev.attr,
&dev_attr_manfid.attr,
&dev_attr_name.attr,
&dev_attr_oemid.attr,
&dev_attr_serial.attr,
NULL,
};
static struct attribute_group mmc_std_attr_group = {
.attrs = mmc_std_attrs,
};
static struct attribute_group *mmc_attr_groups[] = {
&mmc_std_attr_group,
NULL,
};
static struct device_type mmc_type = {
.groups = mmc_attr_groups,
};
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
u32 rocr;
unsigned int max_dtr;
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
/*
* If the OCR response to OP_COND from
* the card ack block addressing then
* enable it
*/
if (rocr & MMC_CARD_ACCESS_MODE_MASK)
mmc_card_set_blockaddr(card);
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_read_ext_csd(card);
if (err)
goto free_card;
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
if (err)
goto free_card;
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Activate wide bus (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
unsigned ext_csd_bit, bus_width;
if (host->caps & MMC_CAP_8_BIT_DATA) {
ext_csd_bit = EXT_CSD_BUS_WIDTH_8;
bus_width = MMC_BUS_WIDTH_8;
} else {
ext_csd_bit = EXT_CSD_BUS_WIDTH_4;
bus_width = MMC_BUS_WIDTH_4;
}
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, ext_csd_bit);
if (err)
goto free_card;
mmc_set_bus_width(card->host, bus_width);
}
if (!oldcard)
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
/*
* Host is being removed. Free up the current card.
*/
static void mmc_remove(struct mmc_host *host)
{
BUG_ON(!host);
BUG_ON(!host->card);
mmc_remove_card(host->card);
host->card = NULL;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
u32 rocr = 0;
BUG_ON(!host);
WARN_ON(!host->claimed);
err = mmc_sd_get_cid(host, ocr, cid, &rocr);
if (err)
return err;
if (oldcard) {
if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
return -ENOENT;
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &sd_type);
if (IS_ERR(card))
return PTR_ERR(card);
card->type = MMC_TYPE_SD;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: get card RCA and quit open drain mode.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_send_relative_addr(host, &card->rca);
if (err)
return err;
mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
}
if (!oldcard) {
err = mmc_sd_get_csd(host, card);
if (err)
return err;
mmc_decode_cid(card);
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
return err;
}
err = mmc_sd_setup_card(host, card, oldcard != NULL);
if (err)
goto free_card;
/* Initialization sequence for UHS-I cards */
if (rocr & SD_ROCR_S18A) {
err = mmc_sd_init_uhs_card(card);
if (err)
goto free_card;
} else {
/*
* Attempt to change to high-speed (if supported)
*/
err = mmc_sd_switch_hs(card);
if (err > 0)
mmc_sd_go_highspeed(card);
else if (err)
goto free_card;
/*
* Set bus speed.
*/
mmc_set_clock(host, mmc_sd_get_max_clock(card));
/*
* Switch to wider bus (if supported).
*/
if ((host->caps & MMC_CAP_4_BIT_DATA) &&
(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
if (err)
goto free_card;
mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
}
}
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err, ddr = 0;
u32 cid[4];
unsigned int max_dtr;
u32 rocr;
u8 *ext_csd = NULL;
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_get_ext_csd(card, &ext_csd);
if (err)
goto free_card;
err = mmc_read_ext_csd(card, ext_csd);
if (err)
goto free_card;
/* If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
mmc_card_set_blockaddr(card);
/* Erase size depends on CSD and Extended CSD */
mmc_set_erase_size(card);
if (card->ext_csd.sectors && (rocr & MMC_CARD_SECTOR_ADDR))
mmc_card_set_blockaddr(card);
}
/*
* If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF
* bit. This bit will be lost every time after a reset or power off.
*/
if (card->ext_csd.enhanced_area_en) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_ERASE_GROUP_DEF, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
err = 0;
/*
* Just disable enhanced area off & sz
* will try to enable ERASE_GROUP_DEF
* during next time reinit
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
} else {
card->ext_csd.erase_group_def = 1;
/*
* enable ERASE_GRP_DEF successfully.
* This will affect the erase size, so
* here need to reset erase size
*/
mmc_set_erase_size(card);
}
}
/*
* Ensure eMMC user default partition is enabled
*/
if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) {
card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG,
card->ext_csd.part_config,
card->ext_csd.part_time);
if (err && err != -EBADMSG)
goto free_card;
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Indicate DDR mode (if supported).
*/
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
&& ((host->caps & (MMC_CAP_1_8V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
&& ((host->caps & (MMC_CAP_1_2V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_2V_DDR_MODE;
}
/*
* Activate wide bus and DDR (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
static unsigned ext_csd_bits[][2] = {
{ EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 },
{ EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 },
{ EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 },
};
static unsigned bus_widths[] = {
MMC_BUS_WIDTH_8,
MMC_BUS_WIDTH_4,
MMC_BUS_WIDTH_1
};
unsigned idx, bus_width = 0;
if (host->caps & MMC_CAP_8_BIT_DATA)
idx = 0;
else
idx = 1;
for (; idx < ARRAY_SIZE(bus_widths); idx++) {
bus_width = bus_widths[idx];
if (bus_width == MMC_BUS_WIDTH_1)
ddr = 0; /* no DDR for 1-bit width */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0],
0);
if (!err) {
mmc_set_bus_width(card->host, bus_width);
/*
* If controller can't handle bus width test,
* compare ext_csd previously read in 1 bit mode
* against ext_csd at new bus width
*/
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
err = mmc_compare_ext_csds(card,
bus_width);
else
err = mmc_bus_test(card, bus_width);
if (!err)
break;
}
}
if (!err && ddr) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1],
0);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width, ddr);
goto free_card;
} else if (ddr) {
/*
* eMMC cards can support 3.3V to 1.2V i/o (vccq)
* signaling.
*
* EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq.
*
* 1.8V vccq at 3.3V core voltage (vcc) is not required
* in the JEDEC spec for DDR.
*
* Do not force change in vccq since we are obviously
* working and no change to vccq is needed.
*
* WARNING: eMMC rules are NOT the same as SD DDR
*/
if (ddr == MMC_1_2V_DDR_MODE) {
err = mmc_set_signal_voltage(host,
MMC_SIGNAL_VOLTAGE_120, 0);
if (err)
goto err;
}
mmc_card_set_ddr_mode(card);
mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50);
mmc_set_bus_width(card->host, bus_width);
}
}
if (!oldcard)
host->card = card;
#ifdef CONFIG_MACH_ACER_A9
switch (card->type) {
case MMC_TYPE_MMC:
sprintf(emmc_type, "MMC");
break;
case MMC_TYPE_SD:
sprintf(emmc_type, "SD");
break;
case MMC_TYPE_SDIO:
sprintf(emmc_type, "SDIO");
break;
case MMC_TYPE_SD_COMBO:
sprintf(emmc_type, "SDcombo");
break;
default:
sprintf(emmc_type, "unknow");
}
sprintf(emmc_date, "%02d/%04d", card->cid.month, card->cid.year);
emmc_size = card->ext_csd.sectors >> 11;
emmc_name = card->cid.prod_name;
if (device_info_kobj == NULL) {
device_info_kobj = kobject_create_and_add("dev-info_rom", NULL);
if (device_info_kobj == NULL) {
pr_warning("%s: subsystem_register failed\n",
mmc_hostname(card->host));
} else {
err = sysfs_create_group(device_info_kobj, &attr_group);
if(err) {
pr_warning("%s: sysfs_create_group failed\n",
mmc_hostname(card->host));
}
}
}
#endif
mmc_free_ext_csd(ext_csd);
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
mmc_free_ext_csd(ext_csd);
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err, ddr = 0;
u32 cid[4];
unsigned int max_dtr;
u32 rocr;
u8 *ext_csd = NULL;
#if defined(CONFIG_MMC_DISABLE_WP_RFG_5)
/* 2012 March detect write protection status for SHR/SHR#K workaround */
/* mfg partition start sector = LBA 65536 */
unsigned char WP_STATUS[8] = {0};
#endif
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_get_ext_csd(card, &ext_csd);
if (err)
goto free_card;
err = mmc_read_ext_csd(card, ext_csd);
if (err)
goto free_card;
/* If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
mmc_card_set_blockaddr(card);
/* Erase size depends on CSD and Extended CSD */
mmc_set_erase_size(card);
if (card->ext_csd.sectors && (rocr & MMC_CARD_SECTOR_ADDR))
mmc_card_set_blockaddr(card);
}
/* If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF */
/* bit. This bit will be lost every time after a reset or power off. */
/* For 2GB eMMC, there will no HC_ERASE_GROUP define */
if (card->ext_csd.sectors > 4194304) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_ERASE_GROUP_DEF, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
err = 0;
/*
* Just disable enhanced area off & sz
* will try to enable ERASE_GROUP_DEF
* during next time reinit
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
} else {
card->ext_csd.erase_group_def = 1;
/*
* enable ERASE_GRP_DEF successfully.
* This will affect the erase size, so
* here need to reset erase size
*/
mmc_set_erase_size(card);
}
}
/*
* Ensure eMMC user default partition is enabled
*/
if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) {
card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG,
card->ext_csd.part_config,
card->ext_csd.part_time);
if (err && err != -EBADMSG)
goto free_card;
}
/* For SanDisk X3, we have to enable power class 4 */
if (card->cid.manfid == 0x45) {
if (card->ext_csd.sectors > 33554432) { /* the storage size larger than 16GB */
err = mmc_switch(card, EXT_CSD_CMD_SET_ZERO, EXT_CSD_POWER_CLASS, 4, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to power class 4 failed\n",
mmc_hostname(card->host));
err = 0;
} else {
printk(KERN_WARNING "%s: switch to power class 4 sucessfully\n",
mmc_hostname(card->host));
}
} else if (card->ext_csd.sectors == 31105024) {
err = mmc_switch(card, EXT_CSD_CMD_SET_ZERO, EXT_CSD_POWER_CLASS, 4, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to power class 4 failed\n",
mmc_hostname(card->host));
err = 0;
} else {
printk(KERN_WARNING "%s: switch to power class 4 sucessfully\n",
mmc_hostname(card->host));
}
}
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Indicate DDR mode (if supported).
*/
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
&& ((host->caps & (MMC_CAP_1_8V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
&& ((host->caps & (MMC_CAP_1_2V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_2V_DDR_MODE;
}
/*
* Activate wide bus and DDR (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
static unsigned ext_csd_bits[][2] = {
{ EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 },
{ EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 },
{ EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 },
};
static unsigned bus_widths[] = {
MMC_BUS_WIDTH_8,
MMC_BUS_WIDTH_4,
MMC_BUS_WIDTH_1
};
unsigned idx, bus_width = 0;
if (host->caps & MMC_CAP_8_BIT_DATA)
idx = 0;
else
idx = 1;
for (; idx < ARRAY_SIZE(bus_widths); idx++) {
bus_width = bus_widths[idx];
if (bus_width == MMC_BUS_WIDTH_1)
ddr = 0; /* no DDR for 1-bit width */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0],
0);
if (!err) {
mmc_set_bus_width(card->host, bus_width);
/*
* If controller can't handle bus width test,
* compare ext_csd previously read in 1 bit mode
* against ext_csd at new bus width
*/
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
err = mmc_compare_ext_csds(card,
bus_width);
else
err = mmc_bus_test(card, bus_width);
if (!err)
break;
}
}
if (!err && ddr) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1],
0);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width, ddr);
goto free_card;
} else if (ddr) {
/*
* eMMC cards can support 3.3V to 1.2V i/o (vccq)
* signaling.
*
* EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq.
*
* 1.8V vccq at 3.3V core voltage (vcc) is not required
* in the JEDEC spec for DDR.
*
* Do not force change in vccq since we are obviously
* working and no change to vccq is needed.
*
* WARNING: eMMC rules are NOT the same as SD DDR
*/
if (ddr == MMC_1_2V_DDR_MODE) {
err = mmc_set_signal_voltage(host,
MMC_SIGNAL_VOLTAGE_120, 0);
if (err)
goto err;
}
mmc_card_set_ddr_mode(card);
mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50);
mmc_set_bus_width(card->host, bus_width);
}
}
#if defined(CONFIG_MMC_DISABLE_WP_RFG_5)
/* 2012 March detect write protection status for SHR/SHR#K workaround */
/* mfg partition start sector = LBA 65536 */
err = mmc_set_block_length(card, 8);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
pr_err("%s: set block length to 8 fail\n", mmc_hostname(card->host));
err = 0;
}
err = mmc_send_write_prot_type(card, WP_STATUS, 65536);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
pr_err("%s: send write protection type at address 65536 failed\n", mmc_hostname(card->host));
err = 0;
}
if (WP_STATUS[0] & 0xAA) {
pr_info("%s: trigger software write protection\n", mmc_hostname(card->host));
card->write_prot_type = 1;
} else {
pr_info("%s: disable software write protection\n", mmc_hostname(card->host));
card->write_prot_type = 0;
}
err = mmc_set_block_length(card, 512);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
pr_err("%s: set block length to 512 fail\n", mmc_hostname(card->host));
err = 0;
}
#endif
if (!oldcard)
host->card = card;
mmc_free_ext_csd(ext_csd);
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
mmc_free_ext_csd(ext_csd);
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "curcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
unsigned int max_dtr;
BUG_ON(!host);
BUG_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
if (err != MMC_ERR_NONE)
goto err;
/*
* Fetch CID from card.
*/
err = mmc_all_send_cid(host, cid);
if (err != MMC_ERR_NONE)
goto err;
if (oldcard) {
if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
goto err;
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host);
if (IS_ERR(card))
goto err;
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* Set card RCA.
*/
err = mmc_set_relative_addr(card);
if (err != MMC_ERR_NONE)
goto free_card;
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)
goto free_card;
err = mmc_decode_csd(card);
if (err < 0)
goto free_card;
err = mmc_decode_cid(card);
if (err < 0)
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 (!oldcard) {
/*
* Fetch and process extened CSD.
*/
err = mmc_read_ext_csd(card);
if (err != MMC_ERR_NONE)
goto free_card;
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(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)
goto free_card;
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Activate wide bus (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(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)
goto free_card;
mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
}
if (!oldcard)
host->card = card;
return MMC_ERR_NONE;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return MMC_ERR_FAILED;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
unsigned int max_dtr;
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
#if !defined(CONFIG_PLAT_BCM476X) // @KP: 090306
err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
#else
err = mmc_send_op_cond(host, ocr | (1 << 30), &(host->ocr));
#endif
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_read_ext_csd(card);
if (err)
goto free_card;
}
/*
* Activate wide bus (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
unsigned ext_csd_bit, bus_width;
if (host->caps & MMC_CAP_8_BIT_DATA) {
ext_csd_bit = EXT_CSD_BUS_WIDTH_8;
bus_width = MMC_BUS_WIDTH_8;
printk(KERN_INFO "%s: mmc_init_card: Switching to 8-bit bus width\n", mmc_hostname(card->host));
} else {
ext_csd_bit = EXT_CSD_BUS_WIDTH_4;
bus_width = MMC_BUS_WIDTH_4;
}
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, ext_csd_bit);
if (err)
goto free_card;
mmc_set_bus_width(card->host, bus_width);
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
#ifdef CONFIG_MMC_BCM_SD
(host->f_max > SDHCI_HOST_MAX_CLK_LS_MODE) &&
#endif
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
if (err)
goto free_card;
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
#if (defined(CONFIG_ARCH_FPGA11107))
max_dtr >>= 5; /* Divide clock by 32 for FPGA scale factor */
#endif
mmc_set_clock(host, max_dtr);
if (!oldcard)
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* 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,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
unsigned int max_dtr;
unsigned int card_supports_8bit = 1;
BUG_ON(!host);
BUG_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &ocr);
if (err != MMC_ERR_NONE)
goto err;
/*
* Fetch CID from card.
*/
err = mmc_all_send_cid(host, cid);
if (err != MMC_ERR_NONE)
goto err;
if (oldcard) {
if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
goto err;
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host);
if (IS_ERR(card))
goto err;
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
printk(KERN_WARNING "[kwwo]%s: mmc-card detected\n", mmc_hostname(card->host));
}
/*
* Set card RCA.
*/
err = mmc_set_relative_addr(card);
if (err != MMC_ERR_NONE)
goto free_card;
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)
goto free_card;
err = mmc_decode_csd(card);
if (err < 0)
goto free_card;
err = mmc_decode_cid(card);
if (err < 0)
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 (!oldcard) {
/*
* Fetch and process extened CSD.
*/
err = mmc_read_ext_csd(card);
if (err != MMC_ERR_NONE)
goto free_card;
}
/*
* Activate block addressing mode (if supported)
*/
if ( (ocr & (3 << 29)) == (2 << 29))
mmc_card_set_blockaddr(card);
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(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)
goto free_card;
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
printk(KERN_INFO "[kwwo]%s: hs ext_csd.hs_max_dtr=%d\n", mmc_hostname(card->host), max_dtr);
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
printk(KERN_WARNING "[kwwo]%s: csd.max_dtr=%d\n", mmc_hostname(card->host), max_dtr);
/* Limit 32nm MoviNAND MMC clock under 20MHz*/
if ( max_dtr > 20000000 ) {
max_dtr = 20000000;
printk(KERN_WARNING "MMC clk forced max. 20 MHz (16.5MHz)\n");
}
}
/* Workarounds for buggy cards */
if (card->cid.manfid == MMC_MANUFACTURER_SAMSUNG) {
const int spare4bmaxspeed = 34700000;
switch (card->cid.prv) {
case 0x1b:
case 0x16:
if (max_dtr > spare4bmaxspeed) {
/* reduce clock to below 34.7 MHz, 4 bit mode */
max_dtr = spare4bmaxspeed;
card_supports_8bit = 0;
printk(KERN_INFO "MMC: enabling workaround for movinand spare4b issue\n");
}
break;
}
}
mmc_set_clock(host, max_dtr);
/*
* Activate wide bus (if supported).
*/
if( card->csd.mmca_vsn >= CSD_SPEC_VER_4 )
{
#ifdef CONFIG_MMC_8_BIT_TRANSFERS
if ( (host->caps & MMC_CAP_8_BIT_DATA) && (card_supports_8bit) )
{
err = mmc_switch( card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_8 );
if( err != MMC_ERR_NONE )
goto free_card;
mmc_set_bus_width( card->host, MMC_BUS_WIDTH_8 );
}
else
#endif
if( 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)
goto free_card;
mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
}
}
if (!oldcard)
host->card = card;
return MMC_ERR_NONE;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return MMC_ERR_FAILED;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err, ddr = 0;
u32 cid[4];
unsigned int max_dtr;
u32 rocr;
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_read_ext_csd(card);
if (err)
goto free_card;
/* If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
mmc_card_set_blockaddr(card);
/* Erase size depends on CSD and Extended CSD */
mmc_set_erase_size(card);
}
/* htc: For SanDisk X3, we have to enable power class 4 */
if (card->cid.manfid == 0x45) {
if (card->ext_csd.sectors > 33554432) { /* the storage size larger than 16GB */
if (card->ext_csd.max_enh_size_mult < 0xEC) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_POWER_CLASS, 4);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to power class 4 failed\n",
mmc_hostname(card->host));
err = 0;
} else {
printk(KERN_WARNING "%s: switch to power class 4 sucessfully\n",
mmc_hostname(card->host));
}
}
}
}
/*
* If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF
* bit. This bit will be lost every time after a reset or power off.
*/
/* htc: set ERASE_GRP_DET to 1 anyway */
//if (card->ext_csd.enhanced_area_en) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_ERASE_GROUP_DEF, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
err = 0;
/*
* Just disable enhanced area off & sz
* will try to enable ERASE_GROUP_DEF
* during next time reinit
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
} else {
card->ext_csd.erase_group_def = 1;
/*
* enable ERASE_GRP_DEF successfully.
* This will affect the erase size, so
* here need to reset erase size
*/
mmc_set_erase_size(card);
}
//}
/**
* Enable boot mode (if not enabled yet)
*/
#if 0
if (card->ext_csd.part_conf != 0x48) {
printk(KERN_INFO "%s: Got default part_conf setting, modify it...\n",
mmc_hostname(card->host));
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_PARTITION_CFG, 0x48);
if (err && err != -EBADMSG) {
printk(KERN_ERR "%s: switch command to set EXT_CSD_PARTITION_CONFIG failed\n",
mmc_hostname(card->host));
goto free_card;
} else {
printk(KERN_INFO "%s: boot_mode is enabled\n",
mmc_hostname(card->host));
}
}
#endif
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
}
/*
* Enable HPI feature (if supported)
*/
if (card->ext_csd.hpi && (card->host->caps & MMC_CAP_BKOPS)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HPI_MGMT, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
pr_warning("%s: Enabling HPI failed\n",
mmc_hostname(card->host));
err = 0;
} else {
card->ext_csd.hpi_en = 1;
}
}
/*
* Enable Background ops feature (if supported)
*/
if (card->ext_csd.bk_ops && (card->host->caps & MMC_CAP_BKOPS)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BKOPS_EN, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
pr_warning("%s: Enabling BK ops failed\n",
mmc_hostname(card->host));
err = 0;
} else {
card->ext_csd.bk_ops_en = 1;
}
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/* TODO workaround for SanDisk X3 eMMC */
if (card->cid.manfid == 0x45) {
if (card->ext_csd.sectors > 33554432) { /* the storage size larger than 16GB */
printk(KERN_INFO "%s: Force to use SDR for SanDisk X3\n", mmc_hostname(card->host));
host->caps &= ~MMC_CAP_1_8V_DDR;
host->caps &= ~MMC_CAP_1_2V_DDR;
host->caps &= ~MMC_CAP_UHS_DDR50;
}
}
/*
* Indicate DDR mode (if supported).
*/
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
&& ((host->caps & (MMC_CAP_1_8V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
&& ((host->caps & (MMC_CAP_1_2V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_2V_DDR_MODE;
}
/*
* Activate wide bus and DDR (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
static unsigned ext_csd_bits[][2] = {
{ EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 },
{ EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 },
{ EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 },
};
static unsigned bus_widths[] = {
MMC_BUS_WIDTH_8,
MMC_BUS_WIDTH_4,
MMC_BUS_WIDTH_1
};
unsigned idx, bus_width = 0;
if (host->caps & MMC_CAP_8_BIT_DATA)
idx = 0;
else
idx = 1;
for (; idx < ARRAY_SIZE(bus_widths); idx++) {
bus_width = bus_widths[idx];
if (bus_width == MMC_BUS_WIDTH_1)
ddr = 0; /* no DDR for 1-bit width */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0]);
if (!err) {
mmc_set_bus_width(card->host, bus_width);
/*
* If controller can't handle bus width test,
* use the highest bus width to maintain
* compatibility with previous MMC behavior.
*/
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
break;
err = mmc_bus_test(card, bus_width);
if (!err)
break;
}
}
if (!err && ddr) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1]);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width, ddr);
goto free_card;
} else if (ddr) {
/*
* eMMC cards can support 3.3V to 1.2V i/o (vccq)
* signaling.
*
* EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq.
*
* 1.8V vccq at 3.3V core voltage (vcc) is not required
* in the JEDEC spec for DDR.
*
* Do not force change in vccq since we are obviously
* working and no change to vccq is needed.
*
* WARNING: eMMC rules are NOT the same as SD DDR
*/
if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) {
err = mmc_set_signal_voltage(host,
MMC_SIGNAL_VOLTAGE_120);
if (err)
goto err;
}
mmc_card_set_ddr_mode(card);
mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50);
mmc_set_bus_width(card->host, bus_width);
}
}
if (!oldcard)
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "curcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
unsigned int max_dtr;
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
host->mode = MMC_MODE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_read_ext_csd(card);
if (err)
goto free_card;
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_execute_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1);
if (err)
goto free_card;
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* HACK: some devices, Hynix flash in particular, seem
* to need a little pause here or it wont respond to any
* further commands.
*/
// msleep(10);
mdelay(10);
/*
* Activate wide bus (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & MMC_CAP_8_BIT_DATA)) {
err = mmc_execute_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_8);
if (err)
goto free_card;
mmc_set_bus_width(card->host, MMC_BUS_WIDTH_8);
} else if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & MMC_CAP_4_BIT_DATA)) {
err = mmc_execute_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_4);
if (err)
goto free_card;
mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
}
if (!oldcard)
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err, ddr = 0;
u32 cid[4];
unsigned int max_dtr;
u32 rocr;
u8 *ext_csd = NULL;
BUG_ON(!host);
WARN_ON(!host->claimed);
if (oldcard && host->index == 0 && htc_mmc_bkops_flag) {
bkops_end = ktime_to_ms(ktime_get_real());
if (bkops_end > bkops_start)
htc_mmc_needs_bkops -= (int)(bkops_end - bkops_start);
if (htc_mmc_needs_bkops < 0)
htc_mmc_needs_bkops = 0;
mmc_card_clr_doing_bkops(oldcard);
mmc_card_clr_need_bkops(oldcard);
htc_mmc_bkops_flag = 0;
}
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_get_ext_csd(card, &ext_csd);
if (err)
goto free_card;
err = mmc_read_ext_csd(card, ext_csd);
if (err)
goto free_card;
/* If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
mmc_card_set_blockaddr(card);
/* Erase size depends on CSD and Extended CSD */
mmc_set_erase_size(card);
}
if (card) {
card->ext_csd.raw_bkops_status = 0;
card->ext_csd.bkops_urgent_checking =0;
}
/*
* If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF
* bit. This bit will be lost every time after a reset or power off.
*/
#ifdef DO_NOT_WORKAROUND_SANDISK_BUG
if (card->ext_csd.enhanced_area_en) {
#endif
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_ERASE_GROUP_DEF, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
err = 0;
/*
* Just disable enhanced area off & sz
* will try to enable ERASE_GROUP_DEF
* during next time reinit
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
} else {
card->ext_csd.erase_group_def = 1;
/*
* enable ERASE_GRP_DEF successfully.
* This will affect the erase size, so
* here need to reset erase size
*/
mmc_set_erase_size(card);
}
#ifdef DO_NOT_WORKAROUND_SANDISK_BUG
}
#endif
/*
* Ensure eMMC user default partition is enabled
*/
if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) {
card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG,
card->ext_csd.part_config,
card->ext_csd.part_time);
if (err && err != -EBADMSG)
goto free_card;
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
}
/*
* Enable HPI feature (if supported)
*/
if (card->ext_csd.hpi && (card->host->caps & MMC_CAP_BKOPS)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HPI_MGMT, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
pr_warning("%s: Enabling HPI failed\n",
mmc_hostname(card->host));
err = 0;
} else {
card->ext_csd.hpi_en = 1;
}
}
/*
* Enable Background ops feature (if supported)
*/
if (card->ext_csd.bk_ops && (card->host->caps & MMC_CAP_BKOPS)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BKOPS_EN, 1, 0);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
pr_warning("%s: Enabling BK ops failed\n",
mmc_hostname(card->host));
err = 0;
} else {
card->ext_csd.bk_ops_en = 1;
}
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Indicate DDR mode (if supported).
*/
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
&& ((host->caps & (MMC_CAP_1_8V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
&& ((host->caps & (MMC_CAP_1_2V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_2V_DDR_MODE;
}
/*
* Activate wide bus and DDR (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
static unsigned ext_csd_bits[][2] = {
{ EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 },
{ EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 },
{ EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 },
};
static unsigned bus_widths[] = {
MMC_BUS_WIDTH_8,
MMC_BUS_WIDTH_4,
MMC_BUS_WIDTH_1
};
unsigned idx, bus_width = 0;
if (host->caps & MMC_CAP_8_BIT_DATA)
idx = 0;
else
idx = 1;
for (; idx < ARRAY_SIZE(bus_widths); idx++) {
bus_width = bus_widths[idx];
if (bus_width == MMC_BUS_WIDTH_1)
ddr = 0; /* no DDR for 1-bit width */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0],
0);
if (!err) {
mmc_set_bus_width(card->host, bus_width);
/*
* If controller can't handle bus width test,
* compare ext_csd previously read in 1 bit mode
* against ext_csd at new bus width
*/
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
err = mmc_compare_ext_csds(card,
bus_width);
else
err = mmc_bus_test(card, bus_width);
if (!err)
break;
}
}
if (!err && ddr) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1],
0);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width, ddr);
goto free_card;
} else if (ddr) {
/*
* eMMC cards can support 3.3V to 1.2V i/o (vccq)
* signaling.
*
* EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq.
*
* 1.8V vccq at 3.3V core voltage (vcc) is not required
* in the JEDEC spec for DDR.
*
* Do not force change in vccq since we are obviously
* working and no change to vccq is needed.
*
* WARNING: eMMC rules are NOT the same as SD DDR
*/
if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) {
err = mmc_set_signal_voltage(host,
MMC_SIGNAL_VOLTAGE_120, 0);
if (err)
goto err;
}
mmc_card_set_ddr_mode(card);
mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50);
mmc_set_bus_width(card->host, bus_width);
}
}
if (card->cid.manfid == 0x45) {
/* Sandisk 24nm extreme 16G */
if ((card->ext_csd.sectors == 31105024) && !strcmp(card->cid.prod_name, "SEM16G"))
card->wr_perf = 12;
/* Sandisk 24nm extreme 32G */
else if ((card->ext_csd.sectors == 62324736) && !strcmp(card->cid.prod_name, "SEM32G"))
card->wr_perf = 12;
/* Sandisk 24nm extreme 64G */
else if ((card->ext_csd.sectors == 122617856) && !strcmp(card->cid.prod_name, "SEM64G"))
card->wr_perf = 12;
/* Sandisk 19nm extreme 16G */
else if ((card->ext_csd.sectors == 30777344) && !strcmp(card->cid.prod_name, "SEM16G"))
card->wr_perf = 14;
/* Sandisk 19nm extreme 32G */
else if ((card->ext_csd.sectors == 61071360) && !strcmp(card->cid.prod_name, "SEM32G"))
card->wr_perf = 14;
else
card->wr_perf = 11;
} else if (card->cid.manfid == 0x15) {
/* Samsung 27nm 16G */
if ((card->ext_csd.sectors == 30777344) && !strcmp(card->cid.prod_name, "KYL00M"))
card->wr_perf = 11;
/* Samsung 27nm 32G */
else if ((card->ext_csd.sectors == 62521344) && !strcmp(card->cid.prod_name, "MBG8FA"))
card->wr_perf = 11;
/* Samsung 21nm 16G */
else if ((card->ext_csd.sectors == 30535680) && !strcmp(card->cid.prod_name, "MAG2GA"))
card->wr_perf = 14;
/* Samsung 21nm 64G */
else if (card->ext_csd.sectors == 122142720)
card->wr_perf = 14;
else
card->wr_perf = 11;
} else if (card->cid.manfid == 0x90) {
/* Hynix 20nm 16G */
if ((card->ext_csd.sectors == 30785536) && !strncmp(card->cid.prod_name, "HAG4d", 5))
card->wr_perf = 12;
/* Hynix 20nm 32G */
else if ((card->ext_csd.sectors == 61079552) && !strncmp(card->cid.prod_name, "HAG4d", 5))
card->wr_perf = 12;
/* Hynix 20nm 64G */
else if ((card->ext_csd.sectors == 122159104) && !strncmp(card->cid.prod_name, "HAG4d", 5))
card->wr_perf = 12;
else
card->wr_perf = 11;
}
if (!oldcard)
host->card = card;
mmc_free_ext_csd(ext_csd);
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
mmc_free_ext_csd(ext_csd);
return err;
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err, ddr = 0;
u32 cid[4];
unsigned int max_dtr;
u32 rocr;
u8 *ext_csd = NULL;
BUG_ON(!host);
WARN_ON(!host->claimed);
/* Set correct bus mode for MMC before attempting init */
if (!mmc_host_is_spi(host))
mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
/* Initialization should be done at 3.3 V I/O voltage. */
mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
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.
*/
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) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &mmc_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_MMC;
card->rca = 1;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: set card RCA and quit open drain mode.
*/
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);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
err = mmc_decode_cid(card);
if (err)
goto free_card;
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_get_ext_csd(card, &ext_csd);
if (err)
goto free_card;
err = mmc_read_ext_csd(card, ext_csd);
if (err)
goto free_card;
/* If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
mmc_card_set_blockaddr(card);
/* Erase size depends on CSD and Extended CSD */
mmc_set_erase_size(card);
}
/*
* this bit will be lost after power off
* or reset, so change this bit to be 0
*/
card->ext_csd.erase_group_def = 0;
/*
* If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF
* bit. This bit will be lost every time after a reset or power off.
*/
if (card->ext_csd.enhanced_area_en ||
card->ext_csd.part_set_complete ||
(card->ext_csd.rev >= 3 &&
(host->caps2 & MMC_CAP2_HC_ERASE_SZ))) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_ERASE_GROUP_DEF, 1, 0, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
err = 0;
/*
* Just disable enhanced area off & sz
* will try to enable ERASE_GROUP_DEF
* during next time reinit
*/
card->enhanced_area_offset = 0;
card->enhanced_area_size = 0;
} else {
card->ext_csd.erase_group_def = 1;
card->enhanced_area_offset =
card->ext_csd.enhanced_area_offset;
card->enhanced_area_size =
card->ext_csd.enhanced_area_size;
/*
* enable ERASE_GRP_DEF successfully.
* This will affect the erase size, so
* here need to reset erase size
*/
mmc_set_erase_size(card);
}
}
/*
* Ensure eMMC user default partition is enabled
*/
if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) {
card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG,
card->ext_csd.part_config,
card->ext_csd.part_time, 1);
if (err && err != -EBADMSG)
goto free_card;
}
/*
* If the host supports the power_off_notify capability then
* set the notification byte in the ext_csd register of device
*/
if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) &&
(card->ext_csd.rev >= 6)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_POWER_OFF_NOTIFICATION,
EXT_CSD_POWER_ON,
card->ext_csd.generic_cmd6_time, 1);
if (err && err != -EBADMSG)
goto free_card;
/*
* The err can be -EBADMSG or 0,
* so check for success and update the flag
*/
if (!err)
card->poweroff_notify_state = MMC_POWERED_ON;
}
/*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HS_TIMING, 1, 0, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
printk(KERN_WARNING "%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
mmc_card_set_highspeed(card);
mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
}
}
/*
* Enable HPI feature (if supported)
*/
if (card->ext_csd.hpi) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_HPI_MGMT, 1, 0, 1);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
pr_warning("%s: Enabling HPI failed\n",
mmc_hostname(card->host));
err = 0;
} else
card->ext_csd.hpi_en = 1;
}
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->ext_csd.hs_max_dtr)
max_dtr = card->ext_csd.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Indicate DDR mode (if supported).
*/
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
&& ((host->caps & (MMC_CAP_1_8V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
&& ((host->caps & (MMC_CAP_1_2V_DDR |
MMC_CAP_UHS_DDR50))
== (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)))
ddr = MMC_1_2V_DDR_MODE;
}
/*
* Activate wide bus and DDR (if supported).
*/
if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) {
static unsigned ext_csd_bits[][2] = {
{ EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 },
{ EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 },
{ EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 },
};
static unsigned bus_widths[] = {
MMC_BUS_WIDTH_8,
MMC_BUS_WIDTH_4,
MMC_BUS_WIDTH_1
};
unsigned idx, bus_width = 0;
if (host->caps & MMC_CAP_8_BIT_DATA)
idx = 0;
else
idx = 1;
for (; idx < ARRAY_SIZE(bus_widths); idx++) {
bus_width = bus_widths[idx];
if (bus_width == MMC_BUS_WIDTH_1)
ddr = 0; /* no DDR for 1-bit width */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0],
0, 1);
if (!err) {
mmc_set_bus_width(card->host, bus_width);
/*
* If controller can't handle bus width test,
* compare ext_csd previously read in 1 bit mode
* against ext_csd at new bus width
*/
if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
err = mmc_compare_ext_csds(card,
bus_width);
else
err = mmc_bus_test(card, bus_width);
if (!err)
break;
}
}
if (!err && ddr) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1],
0, 1);
}
if (err) {
printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width, ddr);
goto free_card;
} else if (ddr) {
/*
* eMMC cards can support 3.3V to 1.2V i/o (vccq)
* signaling.
*
* EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq.
*
* 1.8V vccq at 3.3V core voltage (vcc) is not required
* in the JEDEC spec for DDR.
*
* Do not force change in vccq since we are obviously
* working and no change to vccq is needed.
*
* WARNING: eMMC rules are NOT the same as SD DDR
*/
if (ddr == MMC_1_2V_DDR_MODE) {
err = mmc_set_signal_voltage(host,
MMC_SIGNAL_VOLTAGE_120, 0);
if (err)
goto err;
}
mmc_card_set_ddr_mode(card);
mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50);
mmc_set_bus_width(card->host, bus_width);
}
}
if (!oldcard)
host->card = card;
mmc_free_ext_csd(ext_csd);
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
mmc_free_ext_csd(ext_csd);
return err;
}
