[PATCH 1/8] sptests/spcache01: Detect write-through cache
Sebastian Huber
sebastian.huber at embedded-brains.de
Wed Feb 26 15:52:42 UTC 2014
---
testsuites/sptests/spcache01/init.c | 17 ++++++++++++++---
testsuites/sptests/spcache01/spcache01.scn | 1 +
2 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/testsuites/sptests/spcache01/init.c b/testsuites/sptests/spcache01/init.c
index 9f27a79..d9eb053 100644
--- a/testsuites/sptests/spcache01/init.c
+++ b/testsuites/sptests/spcache01/init.c
@@ -44,6 +44,7 @@ static void test_data_flush_and_invalidate(void)
int n = 32;
int i;
size_t data_size = n * sizeof(data[0]);
+ bool write_through;
printf("data cache flush and invalidate test\n");
@@ -65,8 +66,15 @@ static void test_data_flush_and_invalidate(void)
rtems_cache_invalidate_multiple_data_lines(&data[0], data_size);
- for (i = 0; i < n; ++i) {
- rtems_test_assert(vdata[i] == i);
+ write_through = vdata[0] == ~0;
+ if (write_through) {
+ for (i = 0; i < n; ++i) {
+ rtems_test_assert(vdata[i] == ~i);
+ }
+ } else {
+ for (i = 0; i < n; ++i) {
+ rtems_test_assert(vdata[i] == i);
+ }
}
for (i = 0; i < n; ++i) {
@@ -82,7 +90,10 @@ static void test_data_flush_and_invalidate(void)
rtems_interrupt_lock_release(&lock, level);
- printf("data cache operations by line passed the test\n");
+ printf(
+ "data cache operations by line passed the test (%s cache detected)\n",
+ write_through ? "write-through" : "copy-back"
+ );
} else {
printf(
"skip data cache flush and invalidate test"
diff --git a/testsuites/sptests/spcache01/spcache01.scn b/testsuites/sptests/spcache01/spcache01.scn
index 45ea3e5..c2f1eb6 100644
--- a/testsuites/sptests/spcache01/spcache01.scn
+++ b/testsuites/sptests/spcache01/spcache01.scn
@@ -1,6 +1,7 @@
*** TEST SPCACHE 1 ***
data cache flush and invalidate test
data cache operations by line passed the test
+data cache operations by line passed the test (copy-back cache detected)
data cache line size 32 bytes
load 4096 bytes with flush entire data
duration with normal cache 12660 ns
--
1.7.7
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