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Date: Fri, 13 Nov 2015 15:56:09 +0100
From: Holger Schurig <holgerschurig@...il.com>
To: Ulf Hansson <ulf.hansson@...aro.org>, linux-mmc@...r.kernel.org,
linux-kernel@...r.kernel.org, avi.shchislowski@...disk.com,
alex.lemberg@...disk.com
Cc: Holger Schurig <holgerschurig@...il.com>
Subject: [PATCH 3/6] mmc: move mmc_check_result() to core.c
Currently this function is used inside the mmc test driver. But it is also
usable in the (upcoming) firmware update patch. So move this function out
of mmc_test.c into core.c.
This also adds global MMC_RESULT_ variables that show if some condition
stems from the host controller or the card/chip. This is helpful to
the source in printk.
Signed-off-by: Holger Schurig <holgerschurig@...il.com>
---
drivers/mmc/card/mmc_test.c | 109 +++++++++++++++-----------------------------
drivers/mmc/core/core.c | 28 ++++++++++++
include/linux/mmc/core.h | 8 ++++
3 files changed, 74 insertions(+), 71 deletions(-)
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index d1c2d22..1d9d997 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -24,11 +24,6 @@
#include <linux/seq_file.h>
#include <linux/module.h>
-#define RESULT_OK 0
-#define RESULT_FAIL 1
-#define RESULT_UNSUP_HOST 2
-#define RESULT_UNSUP_CARD 3
-
#define BUFFER_ORDER 2
#define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER)
@@ -603,34 +598,6 @@ static void mmc_test_prepare_broken_mrq(struct mmc_test_card *test,
}
}
-/*
- * Checks that a normal transfer didn't have any errors
- */
-static int mmc_test_check_result(struct mmc_test_card *test,
- struct mmc_request *mrq)
-{
- int ret;
-
- BUG_ON(!mrq || !mrq->cmd || !mrq->data);
-
- ret = 0;
-
- if (!ret && mrq->cmd->error)
- ret = mrq->cmd->error;
- if (!ret && mrq->data->error)
- ret = mrq->data->error;
- if (!ret && mrq->stop && mrq->stop->error)
- ret = mrq->stop->error;
- if (!ret && mrq->data->bytes_xfered !=
- mrq->data->blocks * mrq->data->blksz)
- ret = RESULT_FAIL;
-
- if (ret == -EINVAL)
- ret = RESULT_UNSUP_HOST;
-
- return ret;
-}
-
static int mmc_test_check_result_async(struct mmc_card *card,
struct mmc_async_req *areq)
{
@@ -639,7 +606,7 @@ static int mmc_test_check_result_async(struct mmc_card *card,
mmc_wait_busy(test_async->test->card);
- return mmc_test_check_result(test_async->test, areq->mrq);
+ return mmc_check_result(areq->mrq);
}
/*
@@ -657,21 +624,21 @@ static int mmc_test_check_broken_result(struct mmc_test_card *test,
if (!ret && mrq->cmd->error)
ret = mrq->cmd->error;
if (!ret && mrq->data->error == 0)
- ret = RESULT_FAIL;
+ ret = MMC_RESULT_FAIL;
if (!ret && mrq->data->error != -ETIMEDOUT)
ret = mrq->data->error;
if (!ret && mrq->stop && mrq->stop->error)
ret = mrq->stop->error;
if (mrq->data->blocks > 1) {
if (!ret && mrq->data->bytes_xfered > mrq->data->blksz)
- ret = RESULT_FAIL;
+ ret = MMC_RESULT_FAIL;
} else {
if (!ret && mrq->data->bytes_xfered > 0)
- ret = RESULT_FAIL;
+ ret = MMC_RESULT_FAIL;
}
if (ret == -EINVAL)
- ret = RESULT_UNSUP_HOST;
+ ret = MMC_RESULT_UNSUP_HOST;
return ret;
}
@@ -776,7 +743,7 @@ static int mmc_test_simple_transfer(struct mmc_test_card *test,
mmc_wait_busy(test->card);
- return mmc_test_check_result(test, &mrq);
+ return mmc_check_result(&mrq);
}
/*
@@ -865,12 +832,12 @@ static int mmc_test_transfer(struct mmc_test_card *test,
for (i = 0;i < blocks * blksz;i++) {
if (test->buffer[i] != (u8)i)
- return RESULT_FAIL;
+ return MMC_RESULT_FAIL;
}
for (;i < sectors * 512;i++) {
if (test->buffer[i] != 0xDF)
- return RESULT_FAIL;
+ return MMC_RESULT_FAIL;
}
} else {
local_irq_save(flags);
@@ -878,7 +845,7 @@ static int mmc_test_transfer(struct mmc_test_card *test,
local_irq_restore(flags);
for (i = 0;i < blocks * blksz;i++) {
if (test->scratch[i] != (u8)i)
- return RESULT_FAIL;
+ return MMC_RESULT_FAIL;
}
}
@@ -949,7 +916,7 @@ static int mmc_test_multi_write(struct mmc_test_card *test)
struct scatterlist sg;
if (test->card->host->max_blk_count == 1)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
size = PAGE_SIZE * 2;
size = min(size, test->card->host->max_req_size);
@@ -957,7 +924,7 @@ static int mmc_test_multi_write(struct mmc_test_card *test)
size = min(size, test->card->host->max_blk_count * 512);
if (size < 1024)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
sg_init_one(&sg, test->buffer, size);
@@ -970,7 +937,7 @@ static int mmc_test_multi_read(struct mmc_test_card *test)
struct scatterlist sg;
if (test->card->host->max_blk_count == 1)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
size = PAGE_SIZE * 2;
size = min(size, test->card->host->max_req_size);
@@ -978,7 +945,7 @@ static int mmc_test_multi_read(struct mmc_test_card *test)
size = min(size, test->card->host->max_blk_count * 512);
if (size < 1024)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
sg_init_one(&sg, test->buffer, size);
@@ -991,7 +958,7 @@ static int mmc_test_pow2_write(struct mmc_test_card *test)
struct scatterlist sg;
if (!test->card->csd.write_partial)
- return RESULT_UNSUP_CARD;
+ return MMC_RESULT_UNSUP_CARD;
for (i = 1; i < 512;i <<= 1) {
sg_init_one(&sg, test->buffer, i);
@@ -1009,7 +976,7 @@ static int mmc_test_pow2_read(struct mmc_test_card *test)
struct scatterlist sg;
if (!test->card->csd.read_partial)
- return RESULT_UNSUP_CARD;
+ return MMC_RESULT_UNSUP_CARD;
for (i = 1; i < 512;i <<= 1) {
sg_init_one(&sg, test->buffer, i);
@@ -1027,7 +994,7 @@ static int mmc_test_weird_write(struct mmc_test_card *test)
struct scatterlist sg;
if (!test->card->csd.write_partial)
- return RESULT_UNSUP_CARD;
+ return MMC_RESULT_UNSUP_CARD;
for (i = 3; i < 512;i += 7) {
sg_init_one(&sg, test->buffer, i);
@@ -1045,7 +1012,7 @@ static int mmc_test_weird_read(struct mmc_test_card *test)
struct scatterlist sg;
if (!test->card->csd.read_partial)
- return RESULT_UNSUP_CARD;
+ return MMC_RESULT_UNSUP_CARD;
for (i = 3; i < 512;i += 7) {
sg_init_one(&sg, test->buffer, i);
@@ -1094,7 +1061,7 @@ static int mmc_test_align_multi_write(struct mmc_test_card *test)
struct scatterlist sg;
if (test->card->host->max_blk_count == 1)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
size = PAGE_SIZE * 2;
size = min(size, test->card->host->max_req_size);
@@ -1102,7 +1069,7 @@ static int mmc_test_align_multi_write(struct mmc_test_card *test)
size = min(size, test->card->host->max_blk_count * 512);
if (size < 1024)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
for (i = 1; i < TEST_ALIGN_END; i++) {
sg_init_one(&sg, test->buffer + i, size);
@@ -1121,7 +1088,7 @@ static int mmc_test_align_multi_read(struct mmc_test_card *test)
struct scatterlist sg;
if (test->card->host->max_blk_count == 1)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
size = PAGE_SIZE * 2;
size = min(size, test->card->host->max_req_size);
@@ -1129,7 +1096,7 @@ static int mmc_test_align_multi_read(struct mmc_test_card *test)
size = min(size, test->card->host->max_blk_count * 512);
if (size < 1024)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
for (i = 1; i < TEST_ALIGN_END; i++) {
sg_init_one(&sg, test->buffer + i, size);
@@ -1168,7 +1135,7 @@ static int mmc_test_multi_xfersize_write(struct mmc_test_card *test)
int ret;
if (test->card->host->max_blk_count == 1)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
ret = mmc_test_set_blksize(test, 512);
if (ret)
@@ -1182,7 +1149,7 @@ static int mmc_test_multi_xfersize_read(struct mmc_test_card *test)
int ret;
if (test->card->host->max_blk_count == 1)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
ret = mmc_test_set_blksize(test, 512);
if (ret)
@@ -1219,7 +1186,7 @@ static int mmc_test_multi_write_high(struct mmc_test_card *test)
struct scatterlist sg;
if (test->card->host->max_blk_count == 1)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
size = PAGE_SIZE * 2;
size = min(size, test->card->host->max_req_size);
@@ -1227,7 +1194,7 @@ static int mmc_test_multi_write_high(struct mmc_test_card *test)
size = min(size, test->card->host->max_blk_count * 512);
if (size < 1024)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
sg_init_table(&sg, 1);
sg_set_page(&sg, test->highmem, size, 0);
@@ -1241,7 +1208,7 @@ static int mmc_test_multi_read_high(struct mmc_test_card *test)
struct scatterlist sg;
if (test->card->host->max_blk_count == 1)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
size = PAGE_SIZE * 2;
size = min(size, test->card->host->max_req_size);
@@ -1249,7 +1216,7 @@ static int mmc_test_multi_read_high(struct mmc_test_card *test)
size = min(size, test->card->host->max_blk_count * 512);
if (size < 1024)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
sg_init_table(&sg, 1);
sg_set_page(&sg, test->highmem, size, 0);
@@ -1615,10 +1582,10 @@ static int mmc_test_profile_trim_perf(struct mmc_test_card *test)
int ret;
if (!mmc_can_trim(test->card))
- return RESULT_UNSUP_CARD;
+ return MMC_RESULT_UNSUP_CARD;
if (!mmc_can_erase(test->card))
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
for (sz = 512; sz < t->max_sz; sz <<= 1) {
dev_addr = t->dev_addr + (sz >> 9);
@@ -1732,10 +1699,10 @@ static int mmc_test_profile_seq_trim_perf(struct mmc_test_card *test)
int ret;
if (!mmc_can_trim(test->card))
- return RESULT_UNSUP_CARD;
+ return MMC_RESULT_UNSUP_CARD;
if (!mmc_can_erase(test->card))
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
for (sz = 512; sz <= t->max_sz; sz <<= 1) {
ret = mmc_test_area_erase(test);
@@ -2193,11 +2160,11 @@ static int mmc_test_reset(struct mmc_test_card *test)
err = mmc_hw_reset(host);
if (!err)
- return RESULT_OK;
+ return MMC_RESULT_OK;
else if (err == -EOPNOTSUPP)
- return RESULT_UNSUP_HOST;
+ return MMC_RESULT_UNSUP_HOST;
- return RESULT_FAIL;
+ return MMC_RESULT_FAIL;
}
static const struct mmc_test_case mmc_test_cases[] = {
@@ -2584,20 +2551,20 @@ static void mmc_test_run(struct mmc_test_card *test, int testcase)
ret = mmc_test_cases[i].run(test);
switch (ret) {
- case RESULT_OK:
+ case MMC_RESULT_OK:
pr_info("%s: Result: OK\n",
mmc_hostname(test->card->host));
break;
- case RESULT_FAIL:
+ case MMC_RESULT_FAIL:
pr_info("%s: Result: FAILED\n",
mmc_hostname(test->card->host));
break;
- case RESULT_UNSUP_HOST:
+ case MMC_RESULT_UNSUP_HOST:
pr_info("%s: Result: UNSUPPORTED "
"(by host)\n",
mmc_hostname(test->card->host));
break;
- case RESULT_UNSUP_CARD:
+ case MMC_RESULT_UNSUP_CARD:
pr_info("%s: Result: UNSUPPORTED "
"(by card)\n",
mmc_hostname(test->card->host));
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index df5a61c..3254bce 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2894,6 +2894,34 @@ int mmc_wait_busy(struct mmc_card *card)
}
EXPORT_SYMBOL(mmc_wait_busy);
+/*
+ * Checks that a normal transfer didn't have any errors
+ */
+int mmc_check_result(struct mmc_request *mrq)
+{
+ int ret;
+
+ BUG_ON(!mrq || !mrq->cmd || !mrq->data);
+
+ ret = 0;
+
+ if (!ret && mrq->cmd->error)
+ ret = mrq->cmd->error;
+ if (!ret && mrq->data->error)
+ ret = mrq->data->error;
+ if (!ret && mrq->stop && mrq->stop->error)
+ ret = mrq->stop->error;
+ if (!ret && mrq->data->bytes_xfered !=
+ mrq->data->blocks * mrq->data->blksz)
+ ret = MMC_RESULT_FAIL;
+
+ if (ret == -EINVAL)
+ ret = MMC_RESULT_UNSUP_HOST;
+
+ return ret;
+}
+EXPORT_SYMBOL(mmc_check_result);
+
/**
* mmc_init_context_info() - init synchronization context
* @host: mmc host
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 50e37e1..a5ad2d8 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -81,6 +81,13 @@ struct mmc_command {
unsigned int retries; /* max number of retries */
int error; /* command error */
+/* for mmc_check_result() */
+#define MMC_RESULT_OK 0
+#define MMC_RESULT_FAIL 1
+#define MMC_RESULT_UNSUP_HOST 2
+#define MMC_RESULT_UNSUP_CARD 3
+
+
/*
* Standard errno values are used for errors, but some have specific
* meaning in the MMC layer:
@@ -200,6 +207,7 @@ extern void mmc_prepare_mrq(struct mmc_card *card,
struct mmc_request *mrq, struct scatterlist *sg, unsigned sg_len,
unsigned dev_addr, unsigned blocks, unsigned blksz, int write);
extern int mmc_wait_busy(struct mmc_card *card);
+extern int mmc_check_result(struct mmc_request *mrq);
/**
* mmc_claim_host - exclusively claim a host
--
2.1.4
--
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