From: John Harrison <john.c.harri...@intel.com>
Various UMDs need to know the L3 bank count. So a query API has been
added for it. Test that query.
Signed-off-by: John Harrison <john.c.harri...@intel.com>
---
include/drm-uapi/i915_drm.h | 1 +
tests/i915/i915_query.c | 35 +++++++++++++++++++++++++++++++++++
2 files changed, 36 insertions(+)
diff --git a/include/drm-uapi/i915_drm.h b/include/drm-uapi/i915_drm.h
index 5c34ab759..191820532 100644
--- a/include/drm-uapi/i915_drm.h
+++ b/include/drm-uapi/i915_drm.h
@@ -2234,6 +2234,7 @@ struct drm_i915_query_item {
#define DRM_I915_QUERY_PERF_CONFIG 3
#define DRM_I915_QUERY_MEMORY_REGIONS 4
#define DRM_I915_QUERY_HWCONFIG_TABLE 5
+#define DRM_I915_QUERY_L3_BANK_COUNT 6
/* Must be kept compact -- no holes and well documented */
/**
diff --git a/tests/i915/i915_query.c b/tests/i915/i915_query.c
index eef4afb05..17948e0d8 100644
--- a/tests/i915/i915_query.c
+++ b/tests/i915/i915_query.c
@@ -849,6 +849,38 @@ static void query_parse_and_validate_hwconfig_table(int
i915)
free(data);
}
+static int query_engine_l3_bank_count(int fd)
+{
+ uint32_t *banks;
+ struct drm_i915_query_item size = {
+ .query_id = DRM_I915_QUERY_L3_BANK_COUNT,
+ };
+ struct drm_i915_query_item query = {
+ .query_id = DRM_I915_QUERY_L3_BANK_COUNT,
+ };
+ int num_counts, i;
+
+ i915_query_items(fd, &size, 1);
+ igt_require(size.length > 0);
+
+ num_counts = size.length / sizeof(*banks);
+ igt_info("size = %d, count = %d => %ld\n", size.length, num_counts,
num_counts * sizeof(*banks));
+ igt_assert(size.length == (num_counts * sizeof(*banks)));
+
+ banks = malloc(size.length);
+ igt_assert(banks);
+ query.data_ptr = to_user_pointer(banks);
+ query.length = size.length;
+
+ i915_query_items(fd, &query, 1);
+ igt_assert(query.length == size.length);
+ for (i = 0; i < num_counts; i++)
+ igt_info("Bank count #%d: %d\n", i, banks[i]);
+
+ free(banks);
+ return 0;
+}
+
igt_main
{
int fd = -1;
@@ -911,6 +943,9 @@ igt_main
igt_subtest("hwconfig_table")
query_parse_and_validate_hwconfig_table(fd);
+ igt_subtest("l3_banks")
+ query_engine_l3_bank_count(fd);
+
igt_fixture {
close(fd);
}
--
2.25.1
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