/**
* mmc_set_data_timeout - set the timeout for a data command
* @data: data phase for command
* @card: the MMC card associated with the data transfer
*
* Computes the data timeout parameters according to the
* correct algorithm given the card type.
*/
void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
{
unsigned int mult;
/*
* SDIO cards only define an upper 1 s limit on access.
*/
if (mmc_card_sdio(card)) {
if (card->host->caps & MMC_CAP_ATHEROS_WIFI)
data->timeout_ns = 2000000000;
else
data->timeout_ns = 1000000000;
data->timeout_clks = 0;
return;
}
/*
* SD cards use a 100 multiplier rather than 10
*/
mult = mmc_card_sd(card) ? 100 : 10;
/*
* Scale up the multiplier (and therefore the timeout) by
* the r2w factor for writes.
*/
if (data->flags & MMC_DATA_WRITE)
mult <<= card->csd.r2w_factor;
data->timeout_ns = card->csd.tacc_ns * mult;
data->timeout_clks = card->csd.tacc_clks * mult;
/*
* SD cards also have an upper limit on the timeout.
*/
if (mmc_card_sd(card)) {
unsigned int timeout_us, limit_us;
timeout_us = data->timeout_ns / 1000;
timeout_us += data->timeout_clks * 1000 /
(card->host->ios.clock / 1000);
if (data->flags & MMC_DATA_WRITE)
/*
* The limit is really 250 ms, but that is
* insufficient for some crappy cards.
*/
limit_us = 300000;
else
limit_us = 100000;
/*
* SDHC cards always use these fixed values.
*/
if (timeout_us > limit_us || mmc_card_blockaddr(card)) {
data->timeout_ns = limit_us * 1000;
data->timeout_clks = 0;
}
}
/*
* Some cards need very high timeouts if driven in SPI mode.
* The worst observed timeout was 900ms after writing a
* continuous stream of data until the internal logic
* overflowed.
*/
if (mmc_host_is_spi(card->host)) {
if (data->flags & MMC_DATA_WRITE) {
if (data->timeout_ns < 1000000000)
data->timeout_ns = 1000000000; /* 1s */
} else {
if (data->timeout_ns < 100000000)
data->timeout_ns = 100000000; /* 100ms */
}
}
}
/**
* mmc_set_data_timeout - set the timeout for a data command
* @data: data phase for command
* @card: the MMC card associated with the data transfer
*
* Computes the data timeout parameters according to the
* correct algorithm given the card type.
*/
void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
{
unsigned int mult;
/*
* SDIO cards only define an upper 1 s limit on access.
*/
if (mmc_card_sdio(card)) {
data->timeout_ns = 1000000000;
data->timeout_clks = 0;
return;
}
/*
* SD cards use a 100 multiplier rather than 10
*/
mult = mmc_card_sd(card) ? 100 : 10;
/*
* Scale up the multiplier (and therefore the timeout) by
* the r2w factor for writes.
*/
if (data->flags & MMC_DATA_WRITE)
mult <<= card->csd.r2w_factor;
data->timeout_ns = card->csd.tacc_ns * mult;
data->timeout_clks = card->csd.tacc_clks * mult;
/*
* SD cards also have an upper limit on the timeout.
*/
if (mmc_card_sd(card)) {
unsigned int timeout_us, limit_us;
timeout_us = data->timeout_ns / 1000;
timeout_us += data->timeout_clks * 1000 /
(card->host->ios.clock / 1000);
if (data->flags & MMC_DATA_WRITE)
/*
* The MMC spec "It is strongly recommended
* for hosts to implement more than 500ms
* timeout value even if the card indicates
* the 250ms maximum busy length." Even the
* previous value of 300ms is known to be
* insufficient for some cards.
*/
limit_us = 3000000;
else
limit_us = 100000;
/*
* SDHC cards always use these fixed values.
*/
if (timeout_us > limit_us || mmc_card_blockaddr(card)) {
data->timeout_ns = limit_us * 1000;
data->timeout_clks = 0;
}
}
/*
* Some cards need very high timeouts if driven in SPI mode.
* The worst observed timeout was 900ms after writing a
* continuous stream of data until the internal logic
* overflowed.
*/
if (mmc_host_is_spi(card->host)) {
if (data->flags & MMC_DATA_WRITE) {
if (data->timeout_ns < 1000000000)
data->timeout_ns = 1000000000; /* 1s */
} else {
if (data->timeout_ns < 100000000)
data->timeout_ns = 100000000; /* 100ms */
}
}
}
/*
* Decode extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
int err = 0;
BUG_ON(!card);
if (!ext_csd)
return 0;
/* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */
card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
if (card->csd.structure == 3) {
if (card->ext_csd.raw_ext_csd_structure > 2) {
printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
card->ext_csd.raw_ext_csd_structure);
err = -EINVAL;
goto out;
}
}
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
if (card->ext_csd.rev > 6) {
printk(KERN_ERR "%s: unrecognised EXT_CSD revision %d\n",
mmc_hostname(card->host), card->ext_csd.rev);
err = -EINVAL;
goto out;
}
card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3];
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;
/* Cards with density > 2GiB are sector addressed */
if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512)
mmc_card_set_blockaddr(card);
}
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) {
case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_52;
break;
case EXT_CSD_CARD_TYPE_DDR_1_2V | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_2V;
break;
case EXT_CSD_CARD_TYPE_DDR_1_8V | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_8V;
break;
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));
}
card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.raw_erase_timeout_mult =
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.raw_hc_erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
/* EXT_CSD value is in units of 10ms, but we store in ms */
card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
/* 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];
card->ext_csd.erase_group_def =
ext_csd[EXT_CSD_ERASE_GROUP_DEF];
card->ext_csd.hc_erase_timeout = 300 *
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.hc_erase_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
/*
* There are two boot regions of equal size, defined in
* multiples of 128K.
*/
card->ext_csd.boot_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
}
card->ext_csd.raw_hc_erase_gap_size =
ext_csd[EXT_CSD_PARTITION_ATTRIBUTE];
card->ext_csd.raw_sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.raw_sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.raw_sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.raw_trim_mult =
ext_csd[EXT_CSD_TRIM_MULT];
if (card->ext_csd.rev >= 4) {
/*
* Enhanced area feature support -- check whether the eMMC
* card has the Enhanced area enabled. If so, export enhanced
* area offset and size to user by adding sysfs interface.
*/
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
u8 hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
u8 hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
/*
* calculate the enhanced data area offset, in bytes
*/
card->ext_csd.enhanced_area_offset =
(ext_csd[139] << 24) + (ext_csd[138] << 16) +
(ext_csd[137] << 8) + ext_csd[136];
if (mmc_card_blockaddr(card))
card->ext_csd.enhanced_area_offset <<= 9;
/*
* calculate the enhanced data area size, in kilobytes
*/
card->ext_csd.enhanced_area_size =
(ext_csd[142] << 16) + (ext_csd[141] << 8) +
ext_csd[140];
card->ext_csd.enhanced_area_size *=
(size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
card->ext_csd.enhanced_area_size <<= 9;
} else {
/*
* If the enhanced area is not enabled, disable these
* device attributes.
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
}
card->ext_csd.sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.trim_timeout = 300 *
ext_csd[EXT_CSD_TRIM_MULT];
}
if (card->ext_csd.rev >= 5)
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
/* eMMC v4.5 or later */
if (card->ext_csd.rev >= 6)
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
out:
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;
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;
}
/*
* Register a new MMC card with the driver model.
*/
int mmc_add_card(struct mmc_card *card)
{
int ret;
const char *type;
const char *uhs_bus_speed_mode = "";
static const char *const uhs_speeds[] = {
[UHS_SDR12_BUS_SPEED] = "SDR12 ",
[UHS_SDR25_BUS_SPEED] = "SDR25 ",
[UHS_SDR50_BUS_SPEED] = "SDR50 ",
[UHS_SDR104_BUS_SPEED] = "SDR104 ",
[UHS_DDR50_BUS_SPEED] = "DDR50 ",
};
dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca);
switch (card->type) {
case MMC_TYPE_MMC:
type = "MMC";
break;
case MMC_TYPE_SD:
type = "SD";
if (mmc_card_blockaddr(card)) {
if (mmc_card_ext_capacity(card))
type = "SDXC";
else
type = "SDHC";
}
break;
case MMC_TYPE_SDIO:
type = "SDIO";
break;
case MMC_TYPE_SD_COMBO:
type = "SD-combo";
if (mmc_card_blockaddr(card))
type = "SDHC-combo";
break;
default:
type = "?";
break;
}
if (mmc_card_uhs(card) &&
(card->sd_bus_speed < ARRAY_SIZE(uhs_speeds)))
uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed];
if (mmc_host_is_spi(card->host)) {
pr_info("%s: new %s%s%s card on SPI\n",
mmc_hostname(card->host),
mmc_card_highspeed(card) ? "high speed " : "",
mmc_card_ddr_mode(card) ? "DDR " : "",
type);
} else {
pr_info("%s: new %s%s%s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_card_uhs(card) ? "ultra high speed " :
(mmc_card_highspeed(card) ? "high speed " : ""),
(mmc_card_hs200(card) ? "HS200 " : ""),
mmc_card_ddr_mode(card) ? "DDR " : "",
uhs_bus_speed_mode, type, card->rca);
}
#ifdef CONFIG_DEBUG_FS
mmc_add_card_debugfs(card);
#endif
mmc_init_context_info(card->host);
ret = device_add(&card->dev);
if (ret)
return ret;
mmc_card_set_present(card);
return 0;
}
/*
* Decode extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
int err = 0, idx;
unsigned int part_size;
u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0;
BUG_ON(!card);
if (!ext_csd)
return 0;
/* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */
card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
if (card->csd.structure == 3) {
if (card->ext_csd.raw_ext_csd_structure > 2) {
pr_err("%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
card->ext_csd.raw_ext_csd_structure);
err = -EINVAL;
goto out;
}
}
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
if (card->ext_csd.rev > 6) {
printk(KERN_ERR "%s: unrecognised EXT_CSD revision %d\n",
mmc_hostname(card->host), card->ext_csd.rev);
err = -EINVAL;
goto out;
}
card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3];
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;
/* Cards with density > 2GiB are sector addressed */
if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512)
mmc_card_set_blockaddr(card);
}
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
mmc_select_card_type(card);
card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.raw_erase_timeout_mult =
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.raw_hc_erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
/* EXT_CSD value is in units of 10ms, but we store in ms */
card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
/* 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];
card->ext_csd.erase_group_def =
ext_csd[EXT_CSD_ERASE_GROUP_DEF];
card->ext_csd.hc_erase_timeout = 300 *
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.hc_erase_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
/*
* There are two boot regions of equal size, defined in
* multiples of 128K.
*/
if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) {
for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) {
part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
mmc_part_add(card, part_size,
EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx,
"boot%d", idx, true,
MMC_BLK_DATA_AREA_BOOT);
}
}
}
card->ext_csd.raw_hc_erase_gap_size =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.raw_sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.raw_sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.raw_sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.raw_trim_mult =
ext_csd[EXT_CSD_TRIM_MULT];
if (card->ext_csd.rev >= 4) {
/*
* Enhanced area feature support -- check whether the eMMC
* card has the Enhanced area enabled. If so, export enhanced
* area offset and size to user by adding sysfs interface.
*/
card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
/*
* calculate the enhanced data area offset, in bytes
*/
card->ext_csd.enhanced_area_offset =
(ext_csd[139] << 24) + (ext_csd[138] << 16) +
(ext_csd[137] << 8) + ext_csd[136];
if (mmc_card_blockaddr(card))
card->ext_csd.enhanced_area_offset <<= 9;
/*
* calculate the enhanced data area size, in kilobytes
*/
card->ext_csd.enhanced_area_size =
(ext_csd[142] << 16) + (ext_csd[141] << 8) +
ext_csd[140];
card->ext_csd.enhanced_area_size *=
(size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
card->ext_csd.enhanced_area_size <<= 9;
} else {
/*
* If the enhanced area is not enabled, disable these
* device attributes.
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
}
/*
* General purpose partition feature support --
* If ext_csd has the size of general purpose partitions,
* set size, part_cfg, partition name in mmc_part.
*/
if (ext_csd[EXT_CSD_PARTITION_SUPPORT] &
EXT_CSD_PART_SUPPORT_PART_EN) {
if (card->ext_csd.enhanced_area_en != 1) {
hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
}
for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) {
if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] &&
!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] &&
!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2])
continue;
part_size =
(ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]
<< 16) +
(ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1]
<< 8) +
ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3];
part_size *= (size_t)(hc_erase_grp_sz *
hc_wp_grp_sz);
mmc_part_add(card, part_size << 19,
EXT_CSD_PART_CONFIG_ACC_GP0 + idx,
"gp%d", idx, false,
MMC_BLK_DATA_AREA_GP);
}
}
card->ext_csd.sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.trim_timeout = 300 *
ext_csd[EXT_CSD_TRIM_MULT];
/*
* Note that the call to mmc_part_add above defaults to read
* only. If this default assumption is changed, the call must
* take into account the value of boot_locked below.
*/
card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP];
card->ext_csd.boot_ro_lockable = true;
}
if (card->ext_csd.rev >= 5) {
/* check whether the eMMC card support BKOPS */
if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
card->ext_csd.bkops = 1;
card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN];
card->ext_csd.raw_bkops_status =
ext_csd[EXT_CSD_BKOPS_STATUS];
if (!card->ext_csd.bkops_en &&
card->host->caps2 & MMC_CAP2_INIT_BKOPS) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BKOPS_EN, 1, 0);
if (err)
pr_warning("%s: Enabling BKOPS failed\n",
mmc_hostname(card->host));
else
card->ext_csd.bkops_en = 1;
}
}
/* check whether the eMMC card supports HPI */
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) {
card->ext_csd.hpi = 1;
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
else
card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
/*
* Indicate the maximum timeout to close
* a command interrupted by HPI
*/
card->ext_csd.out_of_int_time =
ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
}
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
}
card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
/* eMMC v4.5 or later */
if (card->ext_csd.rev >= 6) {
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
card->ext_csd.generic_cmd6_time = 10 *
ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
card->ext_csd.power_off_longtime = 10 *
ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
card->ext_csd.cache_size =
ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 |
ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 |
ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 |
ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24;
if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1)
card->ext_csd.data_sector_size = 4096;
else
card->ext_csd.data_sector_size = 512;
if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) &&
(ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) {
card->ext_csd.data_tag_unit_size =
((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) *
(card->ext_csd.data_sector_size);
} else {
card->ext_csd.data_tag_unit_size = 0;
}
card->ext_csd.max_packed_writes =
ext_csd[EXT_CSD_MAX_PACKED_WRITES];
card->ext_csd.max_packed_reads =
ext_csd[EXT_CSD_MAX_PACKED_READS];
}
out:
return err;
}
/*
* Decode extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
int err = 0;
BUG_ON(!card);
if (!ext_csd)
return 0;
/* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */
card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
if (card->csd.structure == 3) {
if (card->ext_csd.raw_ext_csd_structure > 2) {
printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
card->ext_csd.raw_ext_csd_structure);
err = -EINVAL;
#if defined(MMC_CHECK_EXT_CSD)
/* For debugging about ext_csd register value */
mmc_error_ext_csd(card, ext_csd, 0, EXT_CSD_STRUCTURE);
#endif
goto out;
}
}
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
/* eMMC 4.5 : ext_csd rev. is 6
* eMMC 5.0 : ext_csd rev. is 7
* It's temporary change.
*/
if (card->ext_csd.rev > 7) {
printk(KERN_ERR "%s: unrecognised EXT_CSD revision %d\n",
mmc_hostname(card->host), card->ext_csd.rev);
err = -EINVAL;
#if defined(MMC_CHECK_EXT_CSD)
/* For debugging about ext_csd register value */
mmc_error_ext_csd(card, ext_csd, 0, EXT_CSD_REV);
#endif
goto out;
}
card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3];
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;
/* Cards with density > 2GiB are sector addressed */
if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512)
mmc_card_set_blockaddr(card);
}
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
if (card->host->caps2 & MMC_CAP2_HS200) {
switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) {
case EXT_CSD_CARD_TYPE_SDR_ALL:
case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_8V:
case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_2V:
case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_52:
card->ext_csd.hs_max_dtr = 200000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_200;
break;
case EXT_CSD_CARD_TYPE_SDR_1_2V_ALL:
case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_8V:
case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_2V:
case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_52:
card->ext_csd.hs_max_dtr = 200000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_1_2V;
break;
case EXT_CSD_CARD_TYPE_SDR_1_8V_ALL:
case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_8V:
case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_2V:
case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_52:
card->ext_csd.hs_max_dtr = 200000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_1_8V;
break;
case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_52;
break;
case EXT_CSD_CARD_TYPE_DDR_1_2V | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_2V;
break;
case EXT_CSD_CARD_TYPE_DDR_1_8V | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_8V;
break;
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:
#if defined(MMC_CHECK_EXT_CSD)
/* For debugging about ext_csd register value */
mmc_error_ext_csd(card, ext_csd, 0, EXT_CSD_CARD_TYPE);
#endif
/* 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));
#if defined(MMC_RETRY_READ_EXT_CSD)
err = -EINVAL;
goto out;
#endif
}
} else {
pr_debug("%s: Ignore device type HS200.\n",
mmc_hostname(card->host));
switch (ext_csd[EXT_CSD_CARD_TYPE] &
EXT_CSD_CARD_TYPE_NO_HS200_MASK) {
case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_52;
break;
case EXT_CSD_CARD_TYPE_DDR_1_2V | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_2V;
break;
case EXT_CSD_CARD_TYPE_DDR_1_8V | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_8V;
break;
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:
#if defined(MMC_CHECK_EXT_CSD)
/* For debugging about ext_csd register value */
mmc_error_ext_csd(card, ext_csd, 0, EXT_CSD_CARD_TYPE);
#endif
/* 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));
#if defined(MMC_RETRY_READ_EXT_CSD)
err = -EINVAL;
goto out;
#endif
}
}
card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.raw_erase_timeout_mult =
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.raw_hc_erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
card->ext_csd.boot_part_prot = ext_csd[EXT_CSD_BOOT_CONFIG_PROT];
/* EXT_CSD value is in units of 10ms, but we store in ms */
card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
/* 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];
card->ext_csd.erase_group_def =
ext_csd[EXT_CSD_ERASE_GROUP_DEF];
card->ext_csd.hc_erase_timeout = 300 *
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.hc_erase_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
/*
* There are two boot regions of equal size, defined in
* multiples of 128K.
*/
card->ext_csd.boot_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
}
card->ext_csd.raw_hc_erase_gap_size =
ext_csd[EXT_CSD_PARTITION_ATTRIBUTE];
card->ext_csd.raw_sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.raw_sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.raw_sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.raw_trim_mult =
ext_csd[EXT_CSD_TRIM_MULT];
card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
if (card->ext_csd.rev >= 4) {
/*
* Enhanced area feature support -- check whether the eMMC
* card has the Enhanced area enabled. If so, export enhanced
* area offset and size to user by adding sysfs interface.
*/
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
u8 hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
u8 hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
/*
* calculate the enhanced data area offset, in bytes
*/
card->ext_csd.enhanced_area_offset =
(ext_csd[139] << 24) + (ext_csd[138] << 16) +
(ext_csd[137] << 8) + ext_csd[136];
if (mmc_card_blockaddr(card))
card->ext_csd.enhanced_area_offset <<= 9;
/*
* calculate the enhanced data area size, in kilobytes
*/
card->ext_csd.enhanced_area_size =
(ext_csd[142] << 16) + (ext_csd[141] << 8) +
ext_csd[140];
card->ext_csd.enhanced_area_size *=
(size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
card->ext_csd.enhanced_area_size <<= 9;
} else {
/*
* If the enhanced area is not enabled, disable these
* device attributes.
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
}
card->ext_csd.sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.trim_timeout = 300 *
ext_csd[EXT_CSD_TRIM_MULT];
}
if (card->ext_csd.rev >= 5) {
/* enable discard feature if emmc is 4.41+ */
if ((ext_csd[EXT_CSD_VENDOR_SPECIFIC_FIELD + 0] & 0x1) &&
(card->cid.manfid == 0x15))
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
/* check whether the eMMC card supports HPI */
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) {
card->ext_csd.hpi = 1;
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
else
card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
/*
* Indicate the maximum timeout to close
* a command interrupted by HPI
*/
card->ext_csd.out_of_int_time =
ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
}
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
}
card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
/* eMMC v4.5 or later */
if (card->ext_csd.rev >= 6) {
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
card->ext_csd.generic_cmd6_time = 10 *
ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
card->ext_csd.power_off_longtime = 10 *
ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
card->ext_csd.cache_size =
ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 |
ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 |
ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 |
ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24;
card->ext_csd.max_packed_writes =
ext_csd[EXT_CSD_MAX_PACKED_WRITES];
card->ext_csd.max_packed_reads =
ext_csd[EXT_CSD_MAX_PACKED_READS];
}
out:
return err;
}
/*
* Register a new MMC card with the driver model.
*/
int mmc_add_card(struct mmc_card *card)
{
int ret;
const char *type;
dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca);
card->removed = 0;
switch (card->type) {
case MMC_TYPE_MMC:
type = "MMC";
break;
case MMC_TYPE_SD:
type = "SD";
if (mmc_card_blockaddr(card)) {
if (mmc_card_ext_capacity(card))
type = "SDXC";
else
type = "SDHC";
}
break;
case MMC_TYPE_SDIO:
type = "SDIO";
break;
case MMC_TYPE_SD_COMBO:
type = "SD-combo";
if (mmc_card_blockaddr(card))
type = "SDHC-combo";
break;
default:
type = "?";
break;
}
if (mmc_host_is_spi(card->host)) {
printk(KERN_INFO "%s: new %s%s%s card on SPI\n",
mmc_hostname(card->host),
mmc_card_highspeed(card) ? "high speed " : "",
mmc_card_ddr_mode(card) ? "DDR " : "",
type);
} else {
printk(KERN_INFO "%s: new %s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_sd_card_uhs(card) ? "ultra high speed " :
(mmc_card_highspeed(card) ? "high speed " : ""),
mmc_card_ddr_mode(card) ? "DDR " : "",
type, card->rca);
}
#ifdef CONFIG_DEBUG_FS
mmc_add_card_debugfs(card);
#endif
ret = device_add(&card->dev);
if (ret)
return ret;
mmc_card_set_present(card);
return 0;
}
static int simple_sd_ioctl_single_rw(struct msdc_ioctl* msdc_ctl)
{
char l_buf[512];
struct scatterlist msdc_sg;
struct mmc_data msdc_data;
struct mmc_command msdc_cmd;
struct mmc_request msdc_mrq;
struct msdc_host *host_ctl;
int ret = 0;
host_ctl = mtk_msdc_host[msdc_ctl->host_num];
BUG_ON(!host_ctl);
BUG_ON(!host_ctl->mmc);
BUG_ON(!host_ctl->mmc->card);
#ifdef MTK_MSDC_USE_CACHE
if(msdc_ctl->iswrite && mmc_card_mmc(host_ctl->mmc->card) && (host_ctl->mmc->card->ext_csd.cache_ctrl & 0x1))
return simple_sd_ioctl_multi_rw(msdc_ctl);
#endif
mmc_claim_host(host_ctl->mmc);
#if DEBUG_MMC_IOCTL
printk("user want access %d partition\n",msdc_ctl->partition);
#endif
ret = mmc_send_ext_csd(host_ctl->mmc->card, l_buf);
if (ret) {
printk("mmc_send_ext_csd error, single rw\n");
goto single_end;
}
#ifdef MTK_EMMC_SUPPORT
switch (msdc_ctl->partition){
case EMMC_PART_BOOT1:
if (0x1 != (l_buf[179] & 0x7)){
/* change to access boot partition 1 */
l_buf[179] &= ~0x7;
l_buf[179] |= 0x1;
mmc_switch(host_ctl->mmc->card, 0, 179, l_buf[179], 1000);
}
break;
case EMMC_PART_BOOT2:
if (0x2 != (l_buf[179] & 0x7)){
/* change to access boot partition 2 */
l_buf[179] &= ~0x7;
l_buf[179] |= 0x2;
mmc_switch(host_ctl->mmc->card, 0, 179, l_buf[179], 1000);
}
break;
default:
/* make sure access partition is user data area */
if (0 != (l_buf[179] & 0x7)){
/* set back to access user area */
l_buf[179] &= ~0x7;
l_buf[179] |= 0x0;
mmc_switch(host_ctl->mmc->card, 0, 179, l_buf[179], 1000);
}
break;
}
#endif
if(msdc_ctl->total_size > 512){
msdc_ctl->result = -1;
goto single_end;
}
#if DEBUG_MMC_IOCTL
printk("start MSDC_SINGLE_READ_WRITE !!\n");
#endif
memset(&msdc_data, 0, sizeof(struct mmc_data));
memset(&msdc_mrq, 0, sizeof(struct mmc_request));
memset(&msdc_cmd, 0, sizeof(struct mmc_command));
msdc_mrq.cmd = &msdc_cmd;
msdc_mrq.data = &msdc_data;
if(msdc_ctl->trans_type)
dma_force[host_ctl->id] = FORCE_IN_DMA;
else
dma_force[host_ctl->id] = FORCE_IN_PIO;
if (msdc_ctl->iswrite){
msdc_data.flags = MMC_DATA_WRITE;
msdc_cmd.opcode = MMC_WRITE_BLOCK;
msdc_data.blocks = msdc_ctl->total_size / 512;
if (MSDC_CARD_DUNM_FUNC != msdc_ctl->opcode) {
if (copy_from_user(sg_msdc_multi_buffer, msdc_ctl->buffer, 512)){
dma_force[host_ctl->id] = FORCE_NOTHING;
ret = -EFAULT;
goto single_end;
}
} else {
/* called from other kernel module */
memcpy(sg_msdc_multi_buffer, msdc_ctl->buffer, 512);
}
} else {
msdc_data.flags = MMC_DATA_READ;
msdc_cmd.opcode = MMC_READ_SINGLE_BLOCK;
msdc_data.blocks = msdc_ctl->total_size / 512;
memset(sg_msdc_multi_buffer, 0 , 512);
}
msdc_cmd.arg = msdc_ctl->address;
if (!mmc_card_blockaddr(host_ctl->mmc->card)){
printk("the device is used byte address!\n");
msdc_cmd.arg <<= 9;
}
msdc_cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
msdc_data.stop = NULL;
msdc_data.blksz = 512;
msdc_data.sg = &msdc_sg;
msdc_data.sg_len = 1;
#if DEBUG_MMC_IOCTL
printk("single block: ueser buf address is 0x%p!\n",msdc_ctl->buffer);
#endif
sg_init_one(&msdc_sg, sg_msdc_multi_buffer, msdc_ctl->total_size);
mmc_set_data_timeout(&msdc_data, host_ctl->mmc->card);
mmc_wait_for_req(host_ctl->mmc, &msdc_mrq);
if (!msdc_ctl->iswrite){
if (MSDC_CARD_DUNM_FUNC != msdc_ctl->opcode) {
if (copy_to_user(msdc_ctl->buffer,sg_msdc_multi_buffer,512)){
dma_force[host_ctl->id] = FORCE_NOTHING;
ret = -EFAULT;
goto single_end;
}
} else {
/* called from other kernel module */
memcpy(msdc_ctl->buffer,sg_msdc_multi_buffer,512);
}
}
if (msdc_ctl->partition){
ret = mmc_send_ext_csd(host_ctl->mmc->card,l_buf);
if (ret) {
printk("mmc_send_ext_csd error, single rw2\n");
goto single_end;
}
if (l_buf[179] & 0x7) {
/* set back to access user area */
l_buf[179] &= ~0x7;
l_buf[179] |= 0x0;
mmc_switch(host_ctl->mmc->card, 0, 179, l_buf[179], 1000);
}
}
single_end:
mmc_release_host(host_ctl->mmc);
if (ret) {
msdc_ctl->result = ret;
}
if (msdc_cmd.error)
msdc_ctl->result= msdc_cmd.error;
if (msdc_data.error)
msdc_ctl->result= msdc_data.error;
else
msdc_ctl->result= 0;
dma_force[host_ctl->id] = FORCE_NOTHING;
return msdc_ctl->result;
}
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
int err = 0, idx;
unsigned int part_size;
u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0;
BUG_ON(!card);
if (!ext_csd)
return 0;
card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
if (card->csd.structure == 3) {
if (card->ext_csd.raw_ext_csd_structure > 2) {
pr_err("%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
card->ext_csd.raw_ext_csd_structure);
err = -EINVAL;
goto out;
}
}
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
if (card->ext_csd.rev > 7) {
pr_err("%s: unrecognised EXT_CSD revision %d\n",
mmc_hostname(card->host), card->ext_csd.rev);
err = -EINVAL;
goto out;
}
mmc_fixup_device(card, mmc_fixups);
card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3];
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 (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512)
mmc_card_set_blockaddr(card);
}
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
mmc_select_card_type(card);
card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.raw_erase_timeout_mult =
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.raw_hc_erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
if (sa_shift > 0 && sa_shift <= 0x17)
card->ext_csd.sa_timeout =
1 << ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.erase_group_def =
ext_csd[EXT_CSD_ERASE_GROUP_DEF];
card->ext_csd.hc_erase_timeout = 300 *
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.hc_erase_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) {
for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) {
part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
mmc_part_add(card, part_size,
EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx,
"boot%d", idx, true,
MMC_BLK_DATA_AREA_BOOT);
}
}
}
card->ext_csd.raw_hc_erase_gap_size =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.raw_sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.raw_sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.raw_sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.raw_trim_mult =
ext_csd[EXT_CSD_TRIM_MULT];
if (card->ext_csd.rev >= 4) {
card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
card->ext_csd.enhanced_area_offset =
(ext_csd[139] << 24) + (ext_csd[138] << 16) +
(ext_csd[137] << 8) + ext_csd[136];
if (mmc_card_blockaddr(card))
card->ext_csd.enhanced_area_offset <<= 9;
card->ext_csd.enhanced_area_size =
(ext_csd[142] << 16) + (ext_csd[141] << 8) +
ext_csd[140];
card->ext_csd.enhanced_area_size *=
(size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
card->ext_csd.enhanced_area_size <<= 9;
} else {
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
}
if (ext_csd[EXT_CSD_PARTITION_SUPPORT] &
EXT_CSD_PART_SUPPORT_PART_EN) {
if (card->ext_csd.enhanced_area_en != 1) {
hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
}
for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) {
if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] &&
!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] &&
!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2])
continue;
part_size =
(ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]
<< 16) +
(ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1]
<< 8) +
ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3];
part_size *= (size_t)(hc_erase_grp_sz *
hc_wp_grp_sz);
mmc_part_add(card, part_size << 19,
EXT_CSD_PART_CONFIG_ACC_GP0 + idx,
"gp%d", idx, false,
MMC_BLK_DATA_AREA_GP);
}
}
card->ext_csd.sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.trim_timeout = 300 *
ext_csd[EXT_CSD_TRIM_MULT];
card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP];
card->ext_csd.boot_ro_lockable = true;
}
if (card->ext_csd.rev >= 5) {
if ((ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) &&
!(card->quirks & MMC_QUIRK_BROKEN_HPI)) {
card->ext_csd.hpi = 1;
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
else
card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
card->ext_csd.out_of_int_time =
ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
}
if ((ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) &&
card->ext_csd.hpi) {
card->ext_csd.bkops = 1;
card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN];
card->ext_csd.raw_bkops_status =
ext_csd[EXT_CSD_BKOPS_STATUS];
if (!card->ext_csd.bkops_en &&
card->host->caps2 & MMC_CAP2_INIT_BKOPS) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BKOPS_EN, 1, 0);
if (err)
pr_warn("%s: Enabling BKOPS failed\n",
mmc_hostname(card->host));
else
card->ext_csd.bkops_en = 1;
}
}
pr_info("%s: BKOPS_EN bit = %d\n",
mmc_hostname(card->host), card->ext_csd.bkops_en);
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT];
if (ext_csd[EXT_CSD_RPMB_MULT]) {
mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17,
EXT_CSD_PART_CONFIG_ACC_RPMB,
"rpmb", 0, false,
MMC_BLK_DATA_AREA_RPMB);
}
}
card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
if (card->ext_csd.rev >= 6) {
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
card->ext_csd.generic_cmd6_time = 10 *
ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
card->ext_csd.power_off_longtime = 10 *
ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
card->ext_csd.cache_size =
ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 |
ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 |
ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 |
ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24;
if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1)
card->ext_csd.data_sector_size = 4096;
else
card->ext_csd.data_sector_size = 512;
if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) &&
(ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) {
card->ext_csd.data_tag_unit_size =
((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) *
(card->ext_csd.data_sector_size);
} else {
card->ext_csd.data_tag_unit_size = 0;
}
card->ext_csd.max_packed_writes =
ext_csd[EXT_CSD_MAX_PACKED_WRITES];
card->ext_csd.max_packed_reads =
ext_csd[EXT_CSD_MAX_PACKED_READS];
}
if (mmc_card_mmc(card)) {
char *buf;
int i, j;
ssize_t n = 0;
pr_info("%s: cid %08x%08x%08x%08x\n",
mmc_hostname(card->host),
card->raw_cid[0], card->raw_cid[1],
card->raw_cid[2], card->raw_cid[3]);
pr_info("%s: csd %08x%08x%08x%08x\n",
mmc_hostname(card->host),
card->raw_csd[0], card->raw_csd[1],
card->raw_csd[2], card->raw_csd[3]);
buf = kmalloc(512, GFP_KERNEL);
if (buf) {
for (i = 0; i < 32; i++) {
for (j = 511 - (16 * i); j >= 496 - (16 * i); j--)
n += sprintf(buf + n, "%02x", ext_csd[j]);
n += sprintf(buf + n, "\n");
pr_info("%s: ext_csd %s", mmc_hostname(card->host), buf);
n = 0;
}
}
if (buf)
kfree(buf);
}
out:
return err;
}
static int simple_sd_ioctl_multi_rw(struct msdc_ioctl* msdc_ctl)
{
char l_buf[512];
struct scatterlist msdc_sg;
struct mmc_data msdc_data;
struct mmc_command msdc_cmd;
struct mmc_command msdc_stop;
int ret = 0;
#ifdef MTK_MSDC_USE_CMD23
struct mmc_command msdc_sbc;
#endif
struct mmc_request msdc_mrq;
struct msdc_host *host_ctl;
host_ctl = mtk_msdc_host[msdc_ctl->host_num];
BUG_ON(!host_ctl);
BUG_ON(!host_ctl->mmc);
BUG_ON(!host_ctl->mmc->card);
mmc_claim_host(host_ctl->mmc);
#if DEBUG_MMC_IOCTL
printk("user want access %d partition\n",msdc_ctl->partition);
#endif
ret = mmc_send_ext_csd(host_ctl->mmc->card, l_buf);
if (ret) {
printk("mmc_send_ext_csd error, multi rw\n");
goto multi_end;
}
#ifdef MTK_EMMC_SUPPORT
switch (msdc_ctl->partition){
case EMMC_PART_BOOT1:
if (0x1 != (l_buf[179] & 0x7)){
/* change to access boot partition 1 */
l_buf[179] &= ~0x7;
l_buf[179] |= 0x1;
mmc_switch(host_ctl->mmc->card, 0, 179, l_buf[179], 1000);
}
break;
case EMMC_PART_BOOT2:
if (0x2 != (l_buf[179] & 0x7)){
/* change to access boot partition 2 */
l_buf[179] &= ~0x7;
l_buf[179] |= 0x2;
mmc_switch(host_ctl->mmc->card, 0, 179, l_buf[179], 1000);
}
break;
default:
/* make sure access partition is user data area */
if (0 != (l_buf[179] & 0x7)){
/* set back to access user area */
l_buf[179] &= ~0x7;
l_buf[179] |= 0x0;
mmc_switch(host_ctl->mmc->card, 0, 179, l_buf[179], 1000);
}
break;
}
#endif
if(msdc_ctl->total_size > 64*1024){
msdc_ctl->result = -1;
goto multi_end;
}
memset(&msdc_data, 0, sizeof(struct mmc_data));
memset(&msdc_mrq, 0, sizeof(struct mmc_request));
memset(&msdc_cmd, 0, sizeof(struct mmc_command));
memset(&msdc_stop, 0, sizeof(struct mmc_command));
#ifdef MTK_MSDC_USE_CMD23
memset(&msdc_sbc, 0, sizeof(struct mmc_command));
#endif
msdc_mrq.cmd = &msdc_cmd;
msdc_mrq.data = &msdc_data;
if(msdc_ctl->trans_type)
dma_force[host_ctl->id] = FORCE_IN_DMA;
else
dma_force[host_ctl->id] = FORCE_IN_PIO;
if (msdc_ctl->iswrite){
msdc_data.flags = MMC_DATA_WRITE;
msdc_cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK;
msdc_data.blocks = msdc_ctl->total_size / 512;
if (MSDC_CARD_DUNM_FUNC != msdc_ctl->opcode) {
if (copy_from_user(sg_msdc_multi_buffer, msdc_ctl->buffer, msdc_ctl->total_size)){
dma_force[host_ctl->id] = FORCE_NOTHING;
ret = -EFAULT;
goto multi_end;
}
} else {
/* called from other kernel module */
memcpy(sg_msdc_multi_buffer, msdc_ctl->buffer, msdc_ctl->total_size);
}
} else {
msdc_data.flags = MMC_DATA_READ;
msdc_cmd.opcode = MMC_READ_MULTIPLE_BLOCK;
msdc_data.blocks = msdc_ctl->total_size / 512;
memset(sg_msdc_multi_buffer, 0 , msdc_ctl->total_size);
}
#ifdef MTK_MSDC_USE_CMD23
if ((mmc_card_mmc(host_ctl->mmc->card) || (mmc_card_sd(host_ctl->mmc->card) && host_ctl->mmc->card->scr.cmds & SD_SCR_CMD23_SUPPORT)) &&
!(host_ctl->mmc->card->quirks & MMC_QUIRK_BLK_NO_CMD23)){
msdc_mrq.sbc = &msdc_sbc;
msdc_mrq.sbc->opcode = MMC_SET_BLOCK_COUNT;
#ifdef MTK_MSDC_USE_CACHE
/* if ioctl access cacheable partition data, there is on flush mechanism in msdc driver
* so do reliable write .*/
if(mmc_card_mmc(host_ctl->mmc->card) && (host_ctl->mmc->card->ext_csd.cache_ctrl & 0x1) && (msdc_cmd.opcode == MMC_WRITE_MULTIPLE_BLOCK))
msdc_mrq.sbc->arg = msdc_data.blocks | (1<<31);
else
msdc_mrq.sbc->arg = msdc_data.blocks;
#else
msdc_mrq.sbc->arg = msdc_data.blocks;
#endif
msdc_mrq.sbc->flags = MMC_RSP_R1 | MMC_CMD_AC;
}
#endif
msdc_cmd.arg = msdc_ctl->address;
if (!mmc_card_blockaddr(host_ctl->mmc->card)){
printk("this device use byte address!!\n");
msdc_cmd.arg <<= 9;
}
msdc_cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
msdc_stop.opcode = MMC_STOP_TRANSMISSION;
msdc_stop.arg = 0;
msdc_stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
msdc_data.stop = &msdc_stop;
msdc_data.blksz = 512;
msdc_data.sg = &msdc_sg;
msdc_data.sg_len = 1;
#if DEBUG_MMC_IOCTL
printk("total size is %d\n",msdc_ctl->total_size);
#endif
sg_init_one(&msdc_sg, sg_msdc_multi_buffer, msdc_ctl->total_size);
mmc_set_data_timeout(&msdc_data, host_ctl->mmc->card);
mmc_wait_for_req(host_ctl->mmc, &msdc_mrq);
if (!msdc_ctl->iswrite){
if (MSDC_CARD_DUNM_FUNC != msdc_ctl->opcode) {
if (copy_to_user(msdc_ctl->buffer, sg_msdc_multi_buffer, msdc_ctl->total_size)){
dma_force[host_ctl->id] = FORCE_NOTHING;
ret = -EFAULT;
goto multi_end;
}
} else {
/* called from other kernel module */
memcpy(msdc_ctl->buffer, sg_msdc_multi_buffer, msdc_ctl->total_size);
}
}
if (msdc_ctl->partition){
ret = mmc_send_ext_csd(host_ctl->mmc->card,l_buf);
if (ret) {
printk("mmc_send_ext_csd error, multi rw2\n");
goto multi_end;
}
if (l_buf[179] & 0x7) {
/* set back to access user area */
l_buf[179] &= ~0x7;
l_buf[179] |= 0x0;
mmc_switch(host_ctl->mmc->card, 0, 179, l_buf[179], 1000);
}
}
multi_end:
mmc_release_host(host_ctl->mmc);
if (ret) {
msdc_ctl->result = ret;
}
if (msdc_cmd.error)
msdc_ctl->result = msdc_cmd.error;
if (msdc_data.error){
msdc_ctl->result = msdc_data.error;
} else {
msdc_ctl->result = 0;
}
dma_force[host_ctl->id] = FORCE_NOTHING;
return msdc_ctl->result;
}
/*
* Decode extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
int err = 0;
BUG_ON(!card);
if (!ext_csd)
return 0;
/* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */
card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
if (card->csd.structure == 3) {
if (card->ext_csd.raw_ext_csd_structure > 2) {
printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
card->ext_csd.raw_ext_csd_structure);
err = -EINVAL;
goto out;
}
}
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
/* eMMC 4.5 : ext_csd rev. is 6
* eMMC 5.0 : ext_csd rev. is 7
* It's temporary change.
*/
if (card->ext_csd.rev > 7) {
printk(KERN_ERR "%s: unrecognised EXT_CSD revision %d\n",
mmc_hostname(card->host), card->ext_csd.rev);
err = -EINVAL;
goto out;
}
card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3];
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;
/* Cards with density > 2GiB are sector addressed */
if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512)
mmc_card_set_blockaddr(card);
}
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
mmc_select_card_type(card);
card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.raw_erase_timeout_mult =
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.raw_hc_erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
/* EXT_CSD value is in units of 10ms, but we store in ms */
card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
/* 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];
card->ext_csd.erase_group_def =
ext_csd[EXT_CSD_ERASE_GROUP_DEF];
card->ext_csd.hc_erase_timeout = 300 *
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.hc_erase_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
/*
* There are two boot regions of equal size, defined in
* multiples of 128K.
*/
card->ext_csd.boot_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
}
card->ext_csd.raw_hc_erase_gap_size =
ext_csd[EXT_CSD_PARTITION_ATTRIBUTE];
card->ext_csd.raw_sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.raw_sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.raw_sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.raw_trim_mult =
ext_csd[EXT_CSD_TRIM_MULT];
if (card->ext_csd.rev >= 4) {
/*
* Enhanced area feature support -- check whether the eMMC
* card has the Enhanced area enabled. If so, export enhanced
* area offset and size to user by adding sysfs interface.
*/
card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
u8 hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
u8 hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
/*
* calculate the enhanced data area offset, in bytes
*/
card->ext_csd.enhanced_area_offset =
(ext_csd[139] << 24) + (ext_csd[138] << 16) +
(ext_csd[137] << 8) + ext_csd[136];
if (mmc_card_blockaddr(card))
card->ext_csd.enhanced_area_offset <<= 9;
/*
* calculate the enhanced data area size, in kilobytes
*/
card->ext_csd.enhanced_area_size =
(ext_csd[142] << 16) + (ext_csd[141] << 8) +
ext_csd[140];
card->ext_csd.enhanced_area_size *=
(size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
card->ext_csd.enhanced_area_size <<= 9;
} else {
/*
* If the enhanced area is not enabled, disable these
* device attributes.
*/
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
}
card->ext_csd.sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.trim_timeout = 300 *
ext_csd[EXT_CSD_TRIM_MULT];
}
if (card->ext_csd.rev >= 5)
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
/* eMMC v4.5 or later */
if (card->ext_csd.rev >= 6)
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
else {
/*
* enable discard feature if emmc is 4.41+ Toshiba eMMC 19nm
* Normally, emmc 4.5 use EXT_CSD[501]
*/
if ((ext_csd[501] & 0x3F) && (card->cid.manfid == 0x11))
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
/* enable discard feature if emmc is 4.41+ moviNand (EXT_CSD_VENDOR_SPECIFIC_FIELD:64)*/
if ((ext_csd[64] & 0x1) && (card->cid.manfid == 0x15))
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
}
card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
out:
return err;
}
/*
* Register a new MMC card with the driver model.
*/
int mmc_add_card(struct mmc_card *card)
{
int ret;
const char *type;
const char *uhs_bus_speed_mode = "";
static const char *const uhs_speeds[] = {
[UHS_SDR12_BUS_SPEED] = "SDR12 ",
[UHS_SDR25_BUS_SPEED] = "SDR25 ",
[UHS_SDR50_BUS_SPEED] = "SDR50 ",
[UHS_SDR104_BUS_SPEED] = "SDR104 ",
[UHS_DDR50_BUS_SPEED] = "DDR50 ",
};
dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca);
switch (card->type) {
case MMC_TYPE_MMC:
type = "MMC";
break;
case MMC_TYPE_SD:
type = "SD";
if (mmc_card_blockaddr(card)) {
if (mmc_card_ext_capacity(card))
type = "SDXC";
else
type = "SDHC";
}
break;
case MMC_TYPE_SDIO:
type = "SDIO";
break;
case MMC_TYPE_SD_COMBO:
type = "SD-combo";
if (mmc_card_blockaddr(card))
type = "SDHC-combo";
break;
default:
type = "?";
break;
}
if (mmc_sd_card_uhs(card) &&
(card->sd_bus_speed < ARRAY_SIZE(uhs_speeds)))
uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed];
if (mmc_host_is_spi(card->host)) {
pr_info("%s: new %s%s%s card on SPI\n",
mmc_hostname(card->host),
mmc_card_highspeed(card) ? "high speed " : "",
mmc_card_ddr_mode(card) ? "DDR " : "",
type);
} else {
pr_info("%s: new %s%s%s%s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_card_uhs(card) ? "ultra high speed " :
(mmc_card_highspeed(card) ? "high speed " : ""),
(mmc_card_hs400(card) ? "HS400 " : ""),
(mmc_card_hs200(card) ? "HS200 " : ""),
mmc_card_ddr_mode(card) ? "DDR " : "",
uhs_bus_speed_mode, type, card->rca);
}
#ifdef CONFIG_MACH_LGE
/*
*/
printk(KERN_INFO "[LGE][MMC][%-18s( )] mmc_hostname:%s, type:%s\n", __func__, mmc_hostname(card->host), type);
#endif
#ifdef CONFIG_DEBUG_FS
mmc_add_card_debugfs(card);
#endif
mmc_init_context_info(card->host);
if (mmc_use_core_runtime_pm(card->host)) {
ret = pm_runtime_set_active(&card->dev);
if (ret)
pr_err("%s: %s: failed setting runtime active: ret: %d\n",
mmc_hostname(card->host), __func__, ret);
else if (!mmc_card_sdio(card))
pm_runtime_enable(&card->dev);
}
ret = device_add(&card->dev);
#ifdef CONFIG_MACH_LGE
/*
*/
if (ret) {
printk(KERN_INFO "[LGE][MMC][%-18s( )] device_add & uevent posting fail!, ret:%d \n", __func__, ret);
return ret;
} else {
printk(KERN_INFO "[LGE][MMC][%-18s( )] device_add & uevent posting complete!\n", __func__);
}
#else
if (ret)
return ret;
#endif
if (mmc_use_core_runtime_pm(card->host) && !mmc_card_sdio(card)) {
card->rpm_attrib.show = show_rpm_delay;
card->rpm_attrib.store = store_rpm_delay;
sysfs_attr_init(&card->rpm_attrib.attr);
card->rpm_attrib.attr.name = "runtime_pm_timeout";
card->rpm_attrib.attr.mode = S_IRUGO | S_IWUSR;
ret = device_create_file(&card->dev, &card->rpm_attrib);
if (ret)
pr_err("%s: %s: creating runtime pm sysfs entry: failed: %d\n",
mmc_hostname(card->host), __func__, ret);
/* Default timeout is 10 seconds */
card->idle_timeout = RUNTIME_SUSPEND_DELAY_MS;
}
mmc_card_set_present(card);
return 0;
}
/*
* Register a new MMC card with the driver model.
*/
int mmc_add_card(struct mmc_card *card)
{
int ret;
const char *type;
dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca);
switch (card->type) {
case MMC_TYPE_MMC:
type = "MMC";
break;
case MMC_TYPE_SD:
type = "SD";
if (mmc_card_blockaddr(card)) {
if (mmc_card_ext_capacity(card))
type = "SDXC";
else
type = "SDHC";
}
break;
case MMC_TYPE_SDIO:
type = "SDIO";
break;
case MMC_TYPE_SD_COMBO:
type = "SD-combo";
if (mmc_card_blockaddr(card))
type = "SDHC-combo";
break;
default:
type = "?";
break;
}
if (mmc_host_is_spi(card->host)) {
printk(KERN_INFO "%s: new %s%s%s card on SPI\n",
mmc_hostname(card->host),
mmc_card_highspeed(card) ? "high speed " : "",
mmc_card_ddr_mode(card) ? "DDR " : "",
type);
} else {
printk(KERN_INFO "%s: new %s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_sd_card_uhs(card) ? "ultra high speed " :
(mmc_card_highspeed(card) ? "high speed " : ""),
mmc_card_ddr_mode(card) ? "DDR " : "",
type, card->rca);
}
#ifdef CONFIG_MACH_LGE
/* LGE_CHANGE
* MMC Driver update from G1TDR
* 2012-01-14, [email protected] from G1TDR
*/
printk(KERN_INFO "[LGE][MMC][%-18s( )] mmc_hostname:%s, type:%s\n", __func__, mmc_hostname(card->host), type);
#endif
#ifdef CONFIG_DEBUG_FS
mmc_add_card_debugfs(card);
#endif
ret = device_add(&card->dev);
#ifdef CONFIG_MACH_LGE
/* LGE_CHANGE
* MMC Driver update from G1TDR
* 2012-01-14, [email protected] from G1TDR
*/
if (ret) {
printk(KERN_INFO "[LGE][MMC][%-18s( )] device_add & uevent posting fail!, ret:%d \n", __func__, ret);
return ret;
} else {
printk(KERN_INFO "[LGE][MMC][%-18s( )] device_add & uevent posting complete!\n", __func__);
}
#else
if (ret)
return ret;
#endif
mmc_card_set_present(card);
return 0;
}
/*
* Decode extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
int err = 0;
BUG_ON(!card);
if (!ext_csd)
return 0;
/* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */
card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
if (card->csd.structure == 3) {
if (card->ext_csd.raw_ext_csd_structure > 2) {
printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
card->ext_csd.raw_ext_csd_structure);
err = -EINVAL;
goto out;
}
}
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
if (card->ext_csd.rev > 6) {
printk(KERN_ERR "%s: unrecognised EXT_CSD revision %d\n",
mmc_hostname(card->host), card->ext_csd.rev);
err = -EINVAL;
goto out;
}
card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3];
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;
/* Cards with density > 2GiB are sector addressed */
if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512)
mmc_card_set_blockaddr(card);
}
card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) {
case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_52;
break;
case EXT_CSD_CARD_TYPE_DDR_1_2V | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_2V;
break;
case EXT_CSD_CARD_TYPE_DDR_1_8V | EXT_CSD_CARD_TYPE_52 |
EXT_CSD_CARD_TYPE_26:
card->ext_csd.hs_max_dtr = 52000000;
card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_8V;
break;
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));
}
card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.raw_erase_timeout_mult =
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.raw_hc_erase_grp_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
card->ext_csd.part_set_complete =
ext_csd[EXT_CSD_PART_SET_COMPLETE];
if (card->ext_csd.rev >= 3) {
u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
/* EXT_CSD value is in units of 10ms, but we store in ms */
card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
/* 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];
card->ext_csd.erase_group_def =
ext_csd[EXT_CSD_ERASE_GROUP_DEF];
card->ext_csd.hc_erase_timeout = 300 *
ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
card->ext_csd.hc_erase_size =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
card->ext_csd.rpmb_size = 128 * ext_csd[EXT_CSD_RPMB_SIZE_MULT];
card->ext_csd.rpmb_size <<= 2; /* Unit: half sector */
card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
card->rpmb_max_w_blks = card->ext_csd.rel_sectors;
if (card->rpmb_max_w_blks > RPMB_AVALIABLE_SECTORS)
card->rpmb_max_w_blks = RPMB_AVALIABLE_SECTORS;
card->rpmb_max_r_blks = RPMB_AVALIABLE_SECTORS;
/*
* There are two boot regions of equal size, defined in
* multiples of 128K.
*/
card->ext_csd.boot_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
}
card->ext_csd.raw_hc_erase_gap_size =
ext_csd[EXT_CSD_PARTITION_ATTRIBUTE];
card->ext_csd.raw_sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.raw_sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.raw_sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.raw_trim_mult =
ext_csd[EXT_CSD_TRIM_MULT];
card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
if (card->ext_csd.rev >= 4) {
/*
* Enhanced area feature support -- check whether the eMMC
* card has the Enhanced area enabled. If so, export enhanced
* area offset and size to user by adding sysfs interface.
*/
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
u8 hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
u8 hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
/*
* calculate the enhanced data area offset, in bytes
*/
card->ext_csd.enhanced_area_offset =
(ext_csd[139] << 24) + (ext_csd[138] << 16) +
(ext_csd[137] << 8) + ext_csd[136];
if (mmc_card_blockaddr(card))
card->ext_csd.enhanced_area_offset <<= 9;
/*
* calculate the enhanced data area size, in kilobytes
*/
card->ext_csd.enhanced_area_size =
(ext_csd[142] << 16) + (ext_csd[141] << 8) +
ext_csd[140];
card->ext_csd.enhanced_area_size *=
(size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
card->ext_csd.enhanced_area_size <<= 9;
} else {
/*
* If the enhanced area is not enabled, disable these
* device attributes.
*/
card->ext_csd.enhanced_area_offset = 0;
card->ext_csd.enhanced_area_size = 0;
}
card->ext_csd.sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.sec_erase_mult =
ext_csd[EXT_CSD_SEC_ERASE_MULT];
card->ext_csd.sec_feature_support =
ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
card->ext_csd.trim_timeout = 300 *
ext_csd[EXT_CSD_TRIM_MULT];
}
if (card->ext_csd.rev >= 5) {
/* check whether the eMMC card supports BKOPS */
if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
card->ext_csd.bkops = 1;
card->ext_csd.bkops_en =
ext_csd[EXT_CSD_BKOPS_EN];
}
/* check whether the eMMC card supports HPI */
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) {
card->ext_csd.hpi = 1;
if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
else
card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
/*
* Indicate the maximum timeout to close
* a command interrupted by HPI
*/
card->ext_csd.out_of_int_time =
ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
}
card->ext_csd.rel_set = ext_csd[EXT_CSD_WR_REL_SET];
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
}
card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
if (card->ext_csd.rev >= 6) { /* eMMC v4.5 or later */
card->ext_csd.exception_events_ctrl =
ext_csd[EXT_CSD_EXCEPTION_EVENTS_CTRL];
card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
card->ext_csd.power_off_longtime = 10 *
ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
if ((ext_csd[EXT_CSD_DATA_SECTOR_SIZE] & 0x1) &&
(ext_csd[EXT_CSD_USE_NATIVE_SECTOR] & 0x1) &&
(ext_csd[EXT_CSD_NATIVE_SECTOR_SIZE] & 0x1) &&
(ext_csd[EXT_CSD_WR_REL_PARAM] & EXT_CSD_WR_REL_PARAM_EN)) {
printk(KERN_INFO "%s: Large sector size enabled.\n",
mmc_hostname(card->host));
card->ext_csd.large_sect_size_en = 1;
}
}
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
out:
return err;
}