Now that the kselftest infrastructure exists, put it to use and add to
it the existing consistency checks on the fw register lookup tables.
v2: s/tabke/table/
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_uncore.c | 52 +-----------
.../gpu/drm/i915/selftests/i915_live_selftests.h | 1 +
drivers/gpu/drm/i915/selftests/intel_uncore.c | 99 ++++++++++++++++++++++
3 files changed, 104 insertions(+), 48 deletions(-)
create mode 100644 drivers/gpu/drm/i915/selftests/intel_uncore.c
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 8fc5f29e79a8..3ab2d891f585 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -635,33 +635,6 @@ find_fw_domain(struct drm_i915_private *dev_priv, u32 offset)
return entry->domains;
}
-static void
-intel_fw_table_check(struct drm_i915_private *dev_priv)
-{
- const struct intel_forcewake_range *ranges;
- unsigned int num_ranges;
- s32 prev;
- unsigned int i;
-
- if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG))
- return;
-
- ranges = dev_priv->uncore.fw_domains_table;
- if (!ranges)
- return;
-
- num_ranges = dev_priv->uncore.fw_domains_table_entries;
-
- for (i = 0, prev = -1; i < num_ranges; i++, ranges++) {
- WARN_ON_ONCE(IS_GEN9(dev_priv) &&
- (prev + 1) != (s32)ranges->start);
- WARN_ON_ONCE(prev >= (s32)ranges->start);
- prev = ranges->start;
- WARN_ON_ONCE(prev >= (s32)ranges->end);
- prev = ranges->end;
- }
-}
-
#define GEN_FW_RANGE(s, e, d) \
{ .start = (s), .end = (e), .domains = (d) }
@@ -700,23 +673,6 @@ static const i915_reg_t gen8_shadowed_regs[] = {
/* TODO: Other registers are not yet used */
};
-static void intel_shadow_table_check(void)
-{
- const i915_reg_t *reg = gen8_shadowed_regs;
- s32 prev;
- u32 offset;
- unsigned int i;
-
- if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG))
- return;
-
- for (i = 0, prev = -1; i < ARRAY_SIZE(gen8_shadowed_regs); i++, reg++) {
- offset = i915_mmio_reg_offset(*reg);
- WARN_ON_ONCE(prev >= (s32)offset);
- prev = offset;
- }
-}
-
static int mmio_reg_cmp(u32 key, const i915_reg_t *reg)
{
u32 offset = i915_mmio_reg_offset(*reg);
@@ -1445,10 +1401,6 @@ void intel_uncore_init(struct drm_i915_private *dev_priv)
break;
}
- intel_fw_table_check(dev_priv);
- if (INTEL_GEN(dev_priv) >= 8)
- intel_shadow_table_check();
-
if (intel_vgpu_active(dev_priv)) {
ASSIGN_WRITE_MMIO_VFUNCS(vgpu);
ASSIGN_READ_MMIO_VFUNCS(vgpu);
@@ -1971,3 +1923,7 @@ intel_uncore_forcewake_for_reg(struct drm_i915_private *dev_priv,
return fw_domains;
}
+
+#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
+#include "selftests/intel_uncore.c"
+#endif
diff --git a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h
index f3e17cb10e05..3d1d2719ec64 100644
--- a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h
+++ b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h
@@ -9,3 +9,4 @@
* Tests are executed in order by igt/drv_selftest
*/
selftest(sanitycheck, i915_live_sanitycheck) /* keep first (igt selfcheck) */
+selftest(uncore, intel_uncore_live_selftests)
diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c b/drivers/gpu/drm/i915/selftests/intel_uncore.c
new file mode 100644
index 000000000000..0ac467940a4f
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include "i915_selftest.h"
+
+static int intel_fw_table_check(struct drm_i915_private *i915)
+{
+ const struct intel_forcewake_range *ranges;
+ unsigned int num_ranges, i;
+ s32 prev;
+
+ ranges = i915->uncore.fw_domains_table;
+ if (!ranges)
+ return 0;
+
+ num_ranges = i915->uncore.fw_domains_table_entries;
+ for (i = 0, prev = -1; i < num_ranges; i++, ranges++) {
+ /* Check that the table is watertight */
+ if (IS_GEN9(i915) && (prev + 1) != (s32)ranges->start) {
+ pr_err("%s: entry[%d]:(%x, %x) is not watertight to previous (%x)\n",
+ __func__, i, ranges->start, ranges->end, prev);
+ return -EINVAL;
+ }
+
+ /* Check that the table never goes backwards */
+ if (prev >= (s32)ranges->start) {
+ pr_err("%s: entry[%d]:(%x, %x) is less than the previous (%x)\n",
+ __func__, i, ranges->start, ranges->end, prev);
+ return -EINVAL;
+ }
+
+ /* Check that the entry is valid */
+ if (ranges->start >= ranges->end) {
+ pr_err("%s: entry[%d]:(%x, %x) has negative length\n",
+ __func__, i, ranges->start, ranges->end);
+ return -EINVAL;
+ }
+
+ prev = ranges->end;
+ }
+
+ return 0;
+}
+
+static int intel_shadow_table_check(void)
+{
+ const i915_reg_t *reg = gen8_shadowed_regs;
+ unsigned int i;
+ s32 prev;
+
+ for (i = 0, prev = -1; i < ARRAY_SIZE(gen8_shadowed_regs); i++, reg++) {
+ u32 offset = i915_mmio_reg_offset(*reg);
+ if (prev >= (s32)offset) {
+ pr_err("%s: entry[%d]:(%x) is before previous (%x)\n",
+ __func__, i, offset, prev);
+ return -EINVAL;
+ }
+
+ prev = offset;
+ }
+
+ return 0;
+}
+
+int intel_uncore_live_selftests(struct drm_i915_private *i915)
+{
+ int err;
+
+ err = intel_fw_table_check(i915);
+ if (err)
+ return err;
+
+ err = intel_shadow_table_check();
+ if (err)
+ return err;
+
+ return 0;
+}
--
2.11.0
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