Preparing for SDUC, Allow the erase address to be larger beyond a 32 bit
address.
Tested-by: Ricky WU <ricky_wu@xxxxxxxxxxx>
Reviewed-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Signed-off-by: Avri Altman <avri.altman@xxxxxxx>
---
drivers/mmc/core/block.c | 6 ++++--
drivers/mmc/core/core.c | 33 ++++++++++++++++++---------------
drivers/mmc/core/core.h | 16 ++++++++++++----
3 files changed, 34 insertions(+), 21 deletions(-)
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index c9325febc31a..26a67d2033f0 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1199,7 +1199,8 @@ static void mmc_blk_issue_erase_rq(struct mmc_queue *mq, struct request *req,
{
struct mmc_blk_data *md = mq->blkdata;
struct mmc_card *card = md->queue.card;
- unsigned int from, nr;
+ unsigned int nr;
+ sector_t from;
int err = 0;
blk_status_t status = BLK_STS_OK;
@@ -1254,7 +1255,8 @@ static void mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq,
{
struct mmc_blk_data *md = mq->blkdata;
struct mmc_card *card = md->queue.card;
- unsigned int from, nr, arg;
+ unsigned int nr, arg;
+ sector_t from;
int err = 0, type = MMC_BLK_SECDISCARD;
blk_status_t status = BLK_STS_OK;
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index a0b2999684b3..06f63fbaadfb 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1601,8 +1601,8 @@ static unsigned int mmc_erase_timeout(struct mmc_card *card,
return mmc_mmc_erase_timeout(card, arg, qty);
}
-static int mmc_do_erase(struct mmc_card *card, unsigned int from,
- unsigned int to, unsigned int arg)
+static int mmc_do_erase(struct mmc_card *card, sector_t from,
+ sector_t to, unsigned int arg)
{
struct mmc_command cmd = {};
unsigned int qty = 0, busy_timeout = 0;
@@ -1633,8 +1633,8 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
else if (mmc_card_sd(card))
qty += to - from + 1;
else
- qty += ((to / card->erase_size) -
- (from / card->erase_size)) + 1;
+ qty += (mmc_sector_div(to, card->erase_size) -
+ mmc_sector_div(from, card->erase_size)) + 1;
if (!mmc_card_blockaddr(card)) {
from <<= 9;
@@ -1703,18 +1703,19 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
}
static unsigned int mmc_align_erase_size(struct mmc_card *card,
- unsigned int *from,
- unsigned int *to,
+ sector_t *from,
+ sector_t *to,
unsigned int nr)
{
- unsigned int from_new = *from, nr_new = nr, rem;
+ sector_t from_new = *from;
+ unsigned int nr_new = nr, rem;
/*
* When the 'card->erase_size' is power of 2, we can use round_up/down()
* to align the erase size efficiently.
*/
if (is_power_of_2(card->erase_size)) {
- unsigned int temp = from_new;
+ sector_t temp = from_new;
from_new = round_up(temp, card->erase_size);
rem = from_new - temp;
@@ -1726,7 +1727,7 @@ static unsigned int mmc_align_erase_size(struct mmc_card *card,
nr_new = round_down(nr_new, card->erase_size);
} else {
- rem = from_new % card->erase_size;
+ rem = mmc_sector_mod(from_new, card->erase_size);
if (rem) {
rem = card->erase_size - rem;
from_new += rem;
@@ -1759,10 +1760,12 @@ static unsigned int mmc_align_erase_size(struct mmc_card *card,
*
* Caller must claim host before calling this function.
*/
-int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
+int mmc_erase(struct mmc_card *card, sector_t from, unsigned int nr,
unsigned int arg)
{
- unsigned int rem, to = from + nr;
+ unsigned int rem;
+ sector_t to = from + nr;
+
int err;
if (!(card->csd.cmdclass & CCC_ERASE))
@@ -1783,7 +1786,7 @@ int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
return -EOPNOTSUPP;
if (arg == MMC_SECURE_ERASE_ARG) {
- if (from % card->erase_size || nr % card->erase_size)
+ if (mmc_sector_mod(from, card->erase_size) || nr % card->erase_size)
return -EINVAL;
}
@@ -1807,7 +1810,7 @@ int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
* and call mmc_do_erase() twice if necessary. This special case is
* identified by the card->eg_boundary flag.
*/
- rem = card->erase_size - (from % card->erase_size);
+ rem = card->erase_size - mmc_sector_mod(from, card->erase_size);
if ((arg & MMC_TRIM_OR_DISCARD_ARGS) && card->eg_boundary && nr > rem) {
err = mmc_do_erase(card, from, from + rem - 1, arg);
from += rem;
@@ -1866,12 +1869,12 @@ int mmc_can_secure_erase_trim(struct mmc_card *card)
}
EXPORT_SYMBOL(mmc_can_secure_erase_trim);
-int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
+int mmc_erase_group_aligned(struct mmc_card *card, sector_t from,
unsigned int nr)
{
if (!card->erase_size)
return 0;
- if (from % card->erase_size || nr % card->erase_size)
+ if (mmc_sector_mod(from, card->erase_size) || nr % card->erase_size)
return 0;
return 1;
}
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index 37091a6589ed..fc9d5e9620b1 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -116,15 +116,13 @@ bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
-int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
- unsigned int arg);
+int mmc_erase(struct mmc_card *card, sector_t from, unsigned int nr, unsigned int arg);
int mmc_can_erase(struct mmc_card *card);
int mmc_can_trim(struct mmc_card *card);
int mmc_can_discard(struct mmc_card *card);
int mmc_can_sanitize(struct mmc_card *card);
int mmc_can_secure_erase_trim(struct mmc_card *card);
-int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
- unsigned int nr);
+int mmc_erase_group_aligned(struct mmc_card *card, sector_t from, unsigned int nr);
unsigned int mmc_calc_max_discard(struct mmc_card *card);
int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
@@ -199,4 +197,14 @@ static inline int mmc_flush_cache(struct mmc_host *host)
return 0;
}
+static inline unsigned int mmc_sector_div(sector_t dividend, u32 divisor)
+{
+ return div_u64(dividend, divisor);
+}
+
+static inline unsigned int mmc_sector_mod(sector_t dividend, u32 divisor)
+{
+ return sector_div(dividend, divisor);
+}
+
#endif
--
2.25.1
