Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
---
drivers/mmc/card/block.c | 52 ++++++++++++--------
drivers/mmc/card/mmc_test.c | 8 +--
drivers/mmc/card/queue.c | 11 ++++-
drivers/mmc/card/queue.h | 4 ++
drivers/mmc/core/core.c | 117 +++++++++++++++++++++++++++++++++++++++-----
drivers/mmc/core/mmc_ops.c | 9 ++++
drivers/mmc/host/dw_mmc.c | 3 +-
include/linux/mmc/core.h | 6 ++-
8 files changed, 169 insertions(+), 41 deletions(-)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 1d4a09f..3c2bdc2 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1057,9 +1057,12 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
* we can't be sure the returned status is for the r/w command.
*/
for (retry = 2; retry >= 0; retry--) {
- err = get_card_status(card, &status, 0);
- if (!err)
- break;
+ mdelay(100);
+ pr_info("%s: mdelay(100)\n", __func__);
+ return ERR_CONTINUE;
+// err = get_card_status(card, &status, 0);
+// if (!err)
+// break;
/* Re-tune if needed */
mmc_retune_recheck(card->host);
@@ -1230,6 +1233,7 @@ out:
goto retry;
if (!err)
mmc_blk_reset_success(md, type);
+ mmc_put_card(card);
mmc_queue_req_free(mq, mqrq);
blk_end_request(req, err, blk_rq_bytes(req));
@@ -1298,6 +1302,7 @@ out_retry:
if (!err)
mmc_blk_reset_success(md, type);
out:
+ mmc_put_card(card);
mmc_queue_req_free(mq, mqrq);
blk_end_request(req, err, blk_rq_bytes(req));
@@ -1314,6 +1319,7 @@ static int mmc_blk_issue_flush(struct mmc_queue *mq, struct request *req, struct
if (ret)
ret = -EIO;
+ mmc_put_card(card);
mmc_queue_req_free(mq, mqrq);
blk_end_request_all(req, ret);
@@ -1419,10 +1425,13 @@ static int mmc_blk_err_check(struct mmc_card *card,
gen_err = 1;
}
- err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req,
- &gen_err);
- if (err)
- return MMC_BLK_CMD_ERR;
+ mdelay(100);
+ pr_info("%s: mdelay(100)\n", __func__);
+ return MMC_BLK_SUCCESS;
+// err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req,
+// &gen_err);
+// if (err)
+// return MMC_BLK_CMD_ERR;
}
/* if general error occurs, retry the write operation. */
@@ -2035,12 +2044,13 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct mmc_queue_req *mqrq)
areq = &mqrq_cur->mmc_active;
} else
areq = NULL;
- areq = mmc_start_req(card->host, areq, (int *) &status);
+ areq = mmc_start_req(card->host, areq, (int *) &status, mqrq);
if (!areq) {
pr_info("%s: exit (0) (!areq)\n", __func__);
return 0;
}
-
+ ret = 0; //
+#if 0
mq_rq = container_of(areq, struct mmc_queue_req, mmc_active);
brq = &mq_rq->brq;
req = mq_rq->req;
@@ -2139,7 +2149,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct mmc_queue_req *mqrq)
goto cmd_abort;
mmc_blk_packed_hdr_wrq_prep(mq_rq, card, mq);
mmc_start_req(card->host,
- &mq_rq->mmc_active, NULL);
+ &mq_rq->mmc_active, NULL, mq_rq);
} else {
/*
@@ -2149,10 +2159,11 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct mmc_queue_req *mqrq)
mmc_blk_rw_rq_prep(mq_rq, card,
disable_multi, mq);
mmc_start_req(card->host,
- &mq_rq->mmc_active, NULL);
+ &mq_rq->mmc_active, NULL, mq_rq);
}
mq_rq->brq.retune_retry_done = retune_retry_done;
}
+#endif
} while (ret);
pr_info("%s: exit (1==ok)\n", __func__);
@@ -2184,10 +2195,10 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct mmc_queue_req *mqrq)
mmc_blk_rw_rq_prep(mqrq_cur, card, 0, mq);
mmc_start_req(card->host,
- &mqrq_cur->mmc_active, NULL);
+ &mqrq_cur->mmc_active, NULL, mqrq_cur);
}
}
-
+ BUG();
mmc_queue_req_free(mq, mq_rq);
pr_info("%s: exit (0)\n", __func__);
@@ -2201,17 +2212,18 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req, struct mm
struct mmc_card *card = md->queue.card;
unsigned int cmd_flags = req ? req->cmd_flags : 0;
- pr_info("%s: enter\n", __func__);
+ pr_info("%s: enter (mq=%p md=%p)\n", __func__, mq, md);
BUG_ON(!req);
/* claim host only for the first request */
mmc_get_card(card);
- pr_info("%s: mmc_blk_part_switch\n", __func__);
+ pr_info("%s: mmc_blk_part_switch (mq=%p md=%p)\n", __func__, mq, md);
ret = mmc_blk_part_switch(card, md);
if (ret) {
if (req) {
+ mmc_queue_req_free(req->q->queuedata, mqrq); //
blk_end_request_all(req, -EIO);
}
ret = 0;
@@ -2219,23 +2231,23 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req, struct mm
}
if (cmd_flags & REQ_DISCARD) {
- pr_info("%s: DISCARD rq\n", __func__);
+ pr_info("%s: DISCARD rq (mq=%p md=%p)\n", __func__, mq, md);
if (req->cmd_flags & REQ_SECURE)
ret = mmc_blk_issue_secdiscard_rq(mq, req, mqrq);
else
ret = mmc_blk_issue_discard_rq(mq, req, mqrq);
} else if (cmd_flags & REQ_FLUSH) {
- pr_info("%s: FLUSH rq\n", __func__);
+ pr_info("%s: FLUSH rq (mq=%p md=%p)\n", __func__, mq, md);
ret = mmc_blk_issue_flush(mq, req, mqrq);
} else {
- pr_info("%s: RW rq\n", __func__);
+ pr_info("%s: RW rq (mq=%p md=%p)\n", __func__, mq, md);
ret = mmc_blk_issue_rw_rq(mq, mqrq);
}
out:
/* Release host when there are no more requests */
- mmc_put_card(card);
- pr_info("%s: exit\n", __func__);
+///// mmc_put_card(card);
+ pr_info("%s: exit (mq=%p md=%p)\n", __func__, mq, md);
return ret;
}
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index 7dee9e5..ff375c1 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -2413,10 +2413,10 @@ static int mmc_test_ongoing_transfer(struct mmc_test_card *test,
} while (repeat_cmd && R1_CURRENT_STATE(status) != R1_STATE_TRAN);
/* Wait for data request to complete */
- if (use_areq)
- mmc_start_req(host, NULL, &ret);
- else
- mmc_wait_for_req_done(test->card->host, mrq);
+// if (use_areq)
+// mmc_start_req(host, NULL, &ret);
+// else
+// mmc_wait_for_req_done(test->card->host, mrq);
/*
* For cap_cmd_during_tfr request, upper layer must send stop if
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index e9c9bbf..6fd711d 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -52,14 +52,17 @@ struct mmc_queue_req *mmc_queue_req_find(struct mmc_queue *mq,
struct mmc_queue_req *mqrq;
int i = ffz(mq->qslots);
- pr_info("%s: enter (%d)\n", __func__, i);
+ pr_info("%s: enter (%d) (testtag=%d qdepth=%d 0.testtag=%d\n", __func__, i, mq->testtag, mq->qdepth, mq->mqrq[0].testtag);
- WARN_ON(i >= mq->qdepth);
+ WARN_ON(mq->testtag == 0);
+////// WARN_ON(i >= mq->qdepth);
if (i >= mq->qdepth)
return NULL;
+ WARN_ON(mq->qdepth == 0);
//// spin_lock_irq(req->q->queue_lock);
mqrq = &mq->mqrq[i];
+ WARN_ON(mqrq->testtag == 0);
WARN_ON(mqrq->req || mq->qcnt >= mq->qdepth ||
test_bit(mqrq->task_id, &mq->qslots));
mqrq->req = req;
@@ -109,6 +112,7 @@ static void mmc_request_fn(struct request_queue *q)
}
repeat:
req = blk_fetch_request(q);
+ WARN_ON(req && req->cmd_type != REQ_TYPE_FS);
if (req && req->cmd_type == REQ_TYPE_FS) {
mqrq_cur = mmc_queue_req_find(mq, req);
if (!mqrq_cur) {
@@ -179,6 +183,8 @@ static struct mmc_queue_req *mmc_queue_alloc_mqrqs(struct mmc_queue *mq,
mqrq[i].task_id = i;
}
+ mqrq[0].testtag = 1;
+
return mqrq;
}
@@ -285,6 +291,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
mq->mqrq = mmc_queue_alloc_mqrqs(mq, mq->qdepth);
if (!mq->mqrq)
goto blk_cleanup;
+ mq->testtag = 1;
mq->queue->queuedata = mq;
blk_queue_prep_rq(mq->queue, mmc_prep_request);
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
index c52fa88..3adf1bc 100644
--- a/drivers/mmc/card/queue.h
+++ b/drivers/mmc/card/queue.h
@@ -43,6 +43,8 @@ struct mmc_queue_req {
enum mmc_packed_type cmd_type;
struct mmc_packed *packed;
int task_id;
+
+ int testtag;
};
struct mmc_queue {
@@ -57,6 +59,8 @@ struct mmc_queue {
int qdepth;
int qcnt;
unsigned long qslots;
+
+ int testtag;
};
extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 7496c22..22052f0 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -231,6 +231,9 @@ static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
return;
}
+ if (mrq->cmd->retries == 3 && mrq->cmd->opcode == 5)
+ WARN_ON(1);
+
/*
* For sdio rw commands we must wait for card busy otherwise some
* sdio devices won't work properly.
@@ -408,6 +411,9 @@ out:
}
EXPORT_SYMBOL(mmc_start_bkops);
+static void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
+ int err);
+
/*
* mmc_wait_done() - done callback for request
* @mrq: done request
@@ -416,7 +422,77 @@ EXPORT_SYMBOL(mmc_start_bkops);
*/
static void mmc_wait_done(struct mmc_request *mrq)
{
+ struct mmc_host *host = mrq->host; //
+ struct mmc_queue_req *mq_rq = mrq->mqrq;
+ struct mmc_async_req *areq = NULL;
+// struct mmc_queue_req *mq_rq = container_of(next_req, struct mmc_queue_req,
+// mmc_active);
+// struct mmc_queue_req *mq_rq = container_of(areq, struct mmc_queue_req, mmc_active);
+ struct mmc_command *cmd;
+ int err = 0, ret = 0;
+
+ pr_info("%s: enter\n", __func__);
+
+ cmd = mrq->cmd;
+ pr_info("%s: cmd->opcode=%d mq_rq=%p\n", __func__, cmd->opcode, mq_rq);
+
+ if (mq_rq)
+ areq = &mq_rq->mmc_active;
+
+ if (!cmd->error || !cmd->retries ||
+ mmc_card_removed(host->card)) {
+ if (mq_rq &&
+ (mq_rq->req->cmd_type == REQ_TYPE_FS) &&
+ ((mq_rq->req->cmd_flags & (REQ_DISCARD | REQ_FLUSH)) == 0)) {
+ err = areq->err_check(host->card, areq);
+ BUG_ON(err != MMC_BLK_SUCCESS);
+ }
+ }
+ else {
+// WARN_ON(1);
+ mmc_retune_recheck(host);
+ pr_info("%s: req failed (CMD%u): %d, retrying...\n",
+ mmc_hostname(host),
+ cmd->opcode, cmd->error);
+ cmd->retries--;
+ cmd->error = 0;
+ __mmc_start_request(host, mrq);
+ goto out;
+ }
+
+ mmc_retune_release(host);
+
+// host->areq->pre_req_done = false;
+ if (mq_rq &&
+ (mq_rq->req->cmd_type == REQ_TYPE_FS) &&
+ ((mq_rq->req->cmd_flags & (REQ_DISCARD | REQ_FLUSH)) == 0)) {
+ mmc_post_req(host, mrq, 0);
+ }
+
complete(&mrq->completion);
+BUG_ON(mq_rq && (mq_rq->req->cmd_type == REQ_TYPE_FS) && (mq_rq->req->cmd_flags & (REQ_DISCARD | REQ_FLUSH)));
+ if (mq_rq &&
+ (mq_rq->req->cmd_type == REQ_TYPE_FS) &&
+ ((mq_rq->req->cmd_flags & (REQ_DISCARD | REQ_FLUSH)) == 0)) {
+ struct mmc_blk_request *brq;
+ struct request *req;
+ struct mmc_blk_data *md = mq_rq->req->q->queuedata;
+ int bytes;
+
+ brq = &mq_rq->brq;
+ req = mq_rq->req;
+// type = rq_data_dir(req) == READ ? MMC_BLK_READ : MMC_BLK_WRITE;
+ mmc_queue_bounce_post(mq_rq);
+
+ bytes = brq->data.bytes_xfered;
+ mmc_put_card(host->card);
+ pr_info("%s: freeing mqrq\n", __func__); //
+ mmc_queue_req_free(req->q->queuedata, mq_rq); //
+ ret = blk_end_request(req, 0, bytes);
+
+ }
+out:
+ pr_info("%s: exit (err=%d, ret=%d)\n", __func__, err, ret);
}
static inline void mmc_wait_ongoing_tfr_cmd(struct mmc_host *host)
@@ -441,7 +517,7 @@ static inline void mmc_wait_ongoing_tfr_cmd(struct mmc_host *host)
* If an ongoing transfer is already in progress, wait for the command line
* to become available before sending another command.
*/
-static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
+static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq, struct mmc_queue_req *mqrq)
{
int err;
@@ -452,6 +528,7 @@ static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
init_completion(&mrq->completion);
mrq->done = mmc_wait_done;
mrq->host = host;
+ mrq->mqrq = mqrq;
init_completion(&mrq->cmd_completion);
@@ -466,7 +543,7 @@ static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
return err;
}
-
+#if 0
/*
* mmc_wait_for_data_req_done() - wait for request completed
* @host: MMC host to prepare the command.
@@ -564,7 +641,7 @@ void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq)
pr_info("%s: exit\n", __func__);
}
EXPORT_SYMBOL(mmc_wait_for_req_done);
-
+#endif
/**
* mmc_is_req_done - Determine if a 'cap_cmd_during_tfr' request is done
* @host: MMC host
@@ -634,7 +711,7 @@ static void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
* is returned without waiting. NULL is not an error condition.
*/
struct mmc_async_req *mmc_start_req(struct mmc_host *host,
- struct mmc_async_req *areq, int *error)
+ struct mmc_async_req *areq, int *error, struct mmc_queue_req *mqrq)
{
int err = 0;
int start_err = 0;
@@ -645,15 +722,17 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host,
pr_info("%s: areq=%p host->areq=%p\n", __func__, areq, host->areq);
/* Prepare a new request */
- if (areq && !areq->pre_req_done) {
- areq->pre_req_done = true;
+// if (areq && !areq->pre_req_done) {
+// areq->pre_req_done = true;
mmc_pre_req(host, areq->mrq, !host->areq);
- }
+// }
if (areq) //
- start_err = __mmc_start_req(host, areq->mrq); //
-
+ start_err = __mmc_start_req(host, areq->mrq, mqrq); //
+ data = areq; //
+#if 0
host->areq = areq; //
+
if (host->areq) {
err = mmc_wait_for_data_req_done(host, host->areq->mrq, areq);
/*
@@ -687,6 +766,7 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host,
if (error)
*error = err;
+#endif
pr_info("%s: exit (data=%p)\n", __func__, data);
return data;
}
@@ -706,10 +786,19 @@ EXPORT_SYMBOL(mmc_start_req);
*/
void mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
{
- __mmc_start_req(host, mrq);
+ pr_info("%s: enter\n", __func__);
- if (!mrq->cap_cmd_during_tfr)
- mmc_wait_for_req_done(host, mrq);
+ __mmc_start_req(host, mrq, NULL);
+
+ if (!mrq->cap_cmd_during_tfr) {
+// mmc_wait_for_req_done(host, mrq);
+// BUG(); //
+ pr_info("%s: wait start\n", __func__);
+ wait_for_completion(&mrq->completion);
+ pr_info("%s: wait done\n", __func__);
+ }
+
+ pr_info("%s: exit\n", __func__);
}
EXPORT_SYMBOL(mmc_wait_for_req);
@@ -794,6 +883,8 @@ int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries
{
struct mmc_request mrq = {NULL};
+ pr_info("%s: enter (cmd->opcode=%d retries=%d)\n", __func__, cmd->opcode, cmd->retries);
+
WARN_ON(!host->claimed);
memset(cmd->resp, 0, sizeof(cmd->resp));
@@ -801,8 +892,10 @@ int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries
mrq.cmd = cmd;
cmd->data = NULL;
+ pr_info("%s: cmd->opcode=%d retries=%d\n", __func__, cmd->opcode, cmd->retries);
mmc_wait_for_req(host, &mrq);
+ pr_info("%s: exit (cmd->opcode=%d retries=%d cmd->error=%d)\n", __func__, cmd->opcode, cmd->retries, cmd->error);
return cmd->error;
}
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 7ec7d62..0cfa3ad 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -482,6 +482,9 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
bool expired = false;
bool busy = false;
+ WARN_ON(1);
+ pr_info("%s: enter\n", __func__);
+
mmc_retune_hold(host);
/*
@@ -536,6 +539,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
/* Must check status to be sure of no errors. */
timeout = jiffies + msecs_to_jiffies(timeout_ms) + 1;
do {
+ pr_info("%s: busy loop enter\n", __func__);
/*
* Due to the possibility of being preempted after
* sending the status command, check the expiration
@@ -543,6 +547,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
*/
expired = time_after(jiffies, timeout);
if (send_status) {
+ pr_info("%s: send status\n", __func__);
err = __mmc_send_status(card, &status, ignore_crc);
if (err)
goto out;
@@ -550,6 +555,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp)
break;
if (host->ops->card_busy) {
+ pr_info("%s: card busy\n", __func__);
if (!host->ops->card_busy(host))
break;
busy = true;
@@ -563,6 +569,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
* rely on waiting for the stated timeout to be sufficient.
*/
if (!send_status && !host->ops->card_busy) {
+ pr_info("%s: mmc delay\n", __func__);
mmc_delay(timeout_ms);
goto out;
}
@@ -575,12 +582,14 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
err = -ETIMEDOUT;
goto out;
}
+ pr_info("%s: busy loop (busy=%d)\n", __func__, busy);
} while (R1_CURRENT_STATE(status) == R1_STATE_PRG || busy);
err = mmc_switch_status_error(host, status);
out:
mmc_retune_release(host);
+ pr_info("%s: exit\n", __func__);
return err;
}
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index c2a1286..c23b1b2 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1229,6 +1229,7 @@ static void dw_mci_queue_request(struct dw_mci *host, struct dw_mci_slot *slot,
dev_vdbg(&slot->mmc->class_dev, "queue request: state=%d\n",
host->state);
+ BUG_ON(slot->mrq);
slot->mrq = mrq;
if (host->state == STATE_WAITING_CMD11_DONE) {
@@ -1255,8 +1256,6 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
- WARN_ON(slot->mrq);
-
/*
* The check for card presence and queueing of the request must be
* atomic, otherwise the card could be removed in between and the
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 4c6d131..2d0aec8 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -126,6 +126,7 @@ struct mmc_data {
};
struct mmc_host;
+struct mmc_queue_req;
struct mmc_request {
struct mmc_command *sbc; /* SET_BLOCK_COUNT for multiblock */
struct mmc_command *cmd;
@@ -139,6 +140,8 @@ struct mmc_request {
/* Allow other commands during this ongoing data transfer or busy wait */
bool cap_cmd_during_tfr;
+
+ struct mmc_queue_req *mqrq;
};
struct mmc_card;
@@ -147,7 +150,8 @@ struct mmc_async_req;
extern int mmc_stop_bkops(struct mmc_card *);
extern int mmc_read_bkops_status(struct mmc_card *);
extern struct mmc_async_req *mmc_start_req(struct mmc_host *,
- struct mmc_async_req *, int *);
+ struct mmc_async_req *, int *,
+ struct mmc_queue_req *);
extern int mmc_interrupt_hpi(struct mmc_card *);
extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
extern void mmc_wait_for_req_done(struct mmc_host *host,
--
1.9.1
--
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