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authorPierre Ossman <drzeus@drzeus.cx>2008-07-04 18:17:13 +0200
committerPierre Ossman <drzeus@drzeus.cx>2008-07-23 14:42:08 +0200
commit2661081f5ab9cb25359d27f88707a018cf4e68e9 (patch)
tree5bbdd138b1432a76de4328bbd718aa6253c76928
parent907b2cd6dbbdfd6a4be7908f57b1498dfabc880e (diff)
mmc_test: highmem tests
Add a couple of tests to make sure the host driver handles highmem memory pages properly. Unfortunately there is no way to guarantee an allocation below 4 GB in i386, so it might give you addresses that are out of reach for the hardware (OTOH, so will any other highmem allocation in the kernel). Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
-rw-r--r--drivers/mmc/card/mmc_test.c138
1 files changed, 137 insertions, 1 deletions
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index d6b9b486417..6fc13d4c634 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -21,13 +21,17 @@
#define RESULT_UNSUP_HOST 2
#define RESULT_UNSUP_CARD 3
-#define BUFFER_SIZE (PAGE_SIZE * 4)
+#define BUFFER_ORDER 2
+#define BUFFER_SIZE (PAGE_SIZE << BUFFER_ORDER)
struct mmc_test_card {
struct mmc_card *card;
u8 scratch[BUFFER_SIZE];
u8 *buffer;
+#ifdef CONFIG_HIGHMEM
+ struct page *highmem;
+#endif
};
/*******************************************************************/
@@ -799,6 +803,94 @@ static int mmc_test_multi_xfersize_read(struct mmc_test_card *test)
return 0;
}
+#ifdef CONFIG_HIGHMEM
+
+static int mmc_test_write_high(struct mmc_test_card *test)
+{
+ int ret;
+ struct scatterlist sg;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, test->highmem, 512, 0);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_read_high(struct mmc_test_card *test)
+{
+ int ret;
+ struct scatterlist sg;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, test->highmem, 512, 0);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, 1, 512, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_multi_write_high(struct mmc_test_card *test)
+{
+ int ret;
+ unsigned int size;
+ struct scatterlist sg;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ size = PAGE_SIZE * 2;
+ size = min(size, test->card->host->max_req_size);
+ size = min(size, test->card->host->max_seg_size);
+ size = min(size, test->card->host->max_blk_count * 512);
+
+ if (size < 1024)
+ return RESULT_UNSUP_HOST;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, test->highmem, size, 0);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int mmc_test_multi_read_high(struct mmc_test_card *test)
+{
+ int ret;
+ unsigned int size;
+ struct scatterlist sg;
+
+ if (test->card->host->max_blk_count == 1)
+ return RESULT_UNSUP_HOST;
+
+ size = PAGE_SIZE * 2;
+ size = min(size, test->card->host->max_req_size);
+ size = min(size, test->card->host->max_seg_size);
+ size = min(size, test->card->host->max_blk_count * 512);
+
+ if (size < 1024)
+ return RESULT_UNSUP_HOST;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, test->highmem, size, 0);
+
+ ret = mmc_test_transfer(test, &sg, 1, 0, size/512, 512, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+#endif /* CONFIG_HIGHMEM */
+
static const struct mmc_test_case mmc_test_cases[] = {
{
.name = "Basic write (no data verification)",
@@ -913,6 +1005,39 @@ static const struct mmc_test_case mmc_test_cases[] = {
.name = "Correct xfer_size at read (midway failure)",
.run = mmc_test_multi_xfersize_read,
},
+
+#ifdef CONFIG_HIGHMEM
+
+ {
+ .name = "Highmem write",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_write_high,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Highmem read",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_read_high,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Multi-block highmem write",
+ .prepare = mmc_test_prepare_write,
+ .run = mmc_test_multi_write_high,
+ .cleanup = mmc_test_cleanup,
+ },
+
+ {
+ .name = "Multi-block highmem read",
+ .prepare = mmc_test_prepare_read,
+ .run = mmc_test_multi_read_high,
+ .cleanup = mmc_test_cleanup,
+ },
+
+#endif /* CONFIG_HIGHMEM */
+
};
static struct mutex mmc_test_lock;
@@ -1014,12 +1139,23 @@ static ssize_t mmc_test_store(struct device *dev,
test->card = card;
test->buffer = kzalloc(BUFFER_SIZE, GFP_KERNEL);
+#ifdef CONFIG_HIGHMEM
+ test->highmem = alloc_pages(GFP_KERNEL | __GFP_HIGHMEM, BUFFER_ORDER);
+#endif
+
+#ifdef CONFIG_HIGHMEM
+ if (test->buffer && test->highmem) {
+#else
if (test->buffer) {
+#endif
mutex_lock(&mmc_test_lock);
mmc_test_run(test, testcase);
mutex_unlock(&mmc_test_lock);
}
+#ifdef CONFIG_HIGHMEM
+ __free_pages(test->highmem, BUFFER_ORDER);
+#endif
kfree(test->buffer);
kfree(test);