[Intel-gfx] [CI 2/2] drm/i915/gt: Provide a utility to create a scratch buffer
Chris Wilson
chris at chris-wilson.co.uk
Sat Dec 19 02:03:43 UTC 2020
Primarily used by selftests, but also by runtime debugging of engine
w/a, is a routine to create a temporarily bound buffer for readback.
Almagamate the duplicated routines into one.
Suggested-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
---
drivers/gpu/drm/i915/gt/intel_gtt.c | 29 +++++++++++++++
drivers/gpu/drm/i915/gt/intel_gtt.h | 3 ++
drivers/gpu/drm/i915/gt/intel_workarounds.c | 36 ++-----------------
drivers/gpu/drm/i915/gt/selftest_execlists.c | 30 ++--------------
drivers/gpu/drm/i915/gt/selftest_lrc.c | 24 +------------
drivers/gpu/drm/i915/gt/selftest_mocs.c | 29 +--------------
.../gpu/drm/i915/gt/selftest_workarounds.c | 11 +++---
7 files changed, 45 insertions(+), 117 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.c b/drivers/gpu/drm/i915/gt/intel_gtt.c
index 7bfe9072be9a..04aa6601e984 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.c
@@ -422,6 +422,35 @@ void setup_private_pat(struct intel_uncore *uncore)
bdw_setup_private_ppat(uncore);
}
+struct i915_vma *
+__vm_create_scratch_for_read(struct i915_address_space *vm, unsigned long size)
+{
+ struct drm_i915_gem_object *obj;
+ struct i915_vma *vma;
+ int err;
+
+ obj = i915_gem_object_create_internal(vm->i915, PAGE_ALIGN(size));
+ if (IS_ERR(obj))
+ return ERR_CAST(obj);
+
+ i915_gem_object_set_cache_coherency(obj, I915_CACHING_CACHED);
+
+ vma = i915_vma_instance(obj, vm, NULL);
+ if (IS_ERR(vma)) {
+ i915_gem_object_put(obj);
+ return vma;
+ }
+
+ err = i915_vma_pin(vma, 0, 0,
+ i915_vma_is_ggtt(vma) ? PIN_GLOBAL : PIN_USER);
+ if (err) {
+ i915_vma_put(vma);
+ return ERR_PTR(err);
+ }
+
+ return vma;
+}
+
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/mock_gtt.c"
#endif
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h
index 8a33940a71f3..29c10fde8ce3 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.h
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.h
@@ -573,6 +573,9 @@ int i915_vm_pin_pt_stash(struct i915_address_space *vm,
void i915_vm_free_pt_stash(struct i915_address_space *vm,
struct i915_vm_pt_stash *stash);
+struct i915_vma *
+__vm_create_scratch_for_read(struct i915_address_space *vm, unsigned long size);
+
static inline struct sgt_dma {
struct scatterlist *sg;
dma_addr_t dma, max;
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 38868c5c038e..42d320e68b60 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -2086,39 +2086,6 @@ void intel_engine_apply_workarounds(struct intel_engine_cs *engine)
wa_list_apply(engine->uncore, &engine->wa_list);
}
-static struct i915_vma *
-create_scratch(struct i915_address_space *vm, int count)
-{
- struct drm_i915_gem_object *obj;
- struct i915_vma *vma;
- unsigned int size;
- int err;
-
- size = round_up(count * sizeof(u32), PAGE_SIZE);
- obj = i915_gem_object_create_internal(vm->i915, size);
- if (IS_ERR(obj))
- return ERR_CAST(obj);
-
- i915_gem_object_set_cache_coherency(obj, I915_CACHE_LLC);
-
- vma = i915_vma_instance(obj, vm, NULL);
- if (IS_ERR(vma)) {
- err = PTR_ERR(vma);
- goto err_obj;
- }
-
- err = i915_vma_pin(vma, 0, 0,
- i915_vma_is_ggtt(vma) ? PIN_GLOBAL : PIN_USER);
- if (err)
- goto err_obj;
-
- return vma;
-
-err_obj:
- i915_gem_object_put(obj);
- return ERR_PTR(err);
-}
-
struct mcr_range {
u32 start;
u32 end;
@@ -2221,7 +2188,8 @@ static int engine_wa_list_verify(struct intel_context *ce,
if (!wal->count)
return 0;
- vma = create_scratch(&ce->engine->gt->ggtt->vm, wal->count);
+ vma = __vm_create_scratch_for_read(&ce->engine->gt->ggtt->vm,
+ wal->count * sizeof(u32));
if (IS_ERR(vma))
return PTR_ERR(vma);
diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
index 34c2bb8313eb..7f2a6421f220 100644
--- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
+++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
@@ -25,33 +25,6 @@
#define NUM_GPR 16
#define NUM_GPR_DW (NUM_GPR * 2) /* each GPR is 2 dwords */
-static struct i915_vma *create_scratch(struct intel_gt *gt)
-{
- struct drm_i915_gem_object *obj;
- struct i915_vma *vma;
- int err;
-
- obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
- if (IS_ERR(obj))
- return ERR_CAST(obj);
-
- i915_gem_object_set_cache_coherency(obj, I915_CACHING_CACHED);
-
- vma = i915_vma_instance(obj, >->ggtt->vm, NULL);
- if (IS_ERR(vma)) {
- i915_gem_object_put(obj);
- return vma;
- }
-
- err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL);
- if (err) {
- i915_gem_object_put(obj);
- return ERR_PTR(err);
- }
-
- return vma;
-}
-
static bool is_active(struct i915_request *rq)
{
if (i915_request_is_active(rq))
@@ -4167,7 +4140,8 @@ static int preserved_virtual_engine(struct intel_gt *gt,
int err = 0;
u32 *cs;
- scratch = create_scratch(siblings[0]->gt);
+ scratch = __vm_create_scratch_for_read(&siblings[0]->gt->ggtt->vm,
+ PAGE_SIZE);
if (IS_ERR(scratch))
return PTR_ERR(scratch);
diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
index b7617731d2cd..6f21cdfd0903 100644
--- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
@@ -27,29 +27,7 @@
static struct i915_vma *create_scratch(struct intel_gt *gt)
{
- struct drm_i915_gem_object *obj;
- struct i915_vma *vma;
- int err;
-
- obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
- if (IS_ERR(obj))
- return ERR_CAST(obj);
-
- i915_gem_object_set_cache_coherency(obj, I915_CACHING_CACHED);
-
- vma = i915_vma_instance(obj, >->ggtt->vm, NULL);
- if (IS_ERR(vma)) {
- i915_gem_object_put(obj);
- return vma;
- }
-
- err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL);
- if (err) {
- i915_gem_object_put(obj);
- return ERR_PTR(err);
- }
-
- return vma;
+ return __vm_create_scratch_for_read(>->ggtt->vm, PAGE_SIZE);
}
static bool is_active(struct i915_request *rq)
diff --git a/drivers/gpu/drm/i915/gt/selftest_mocs.c b/drivers/gpu/drm/i915/gt/selftest_mocs.c
index 37b066dca52c..ca72894918ba 100644
--- a/drivers/gpu/drm/i915/gt/selftest_mocs.c
+++ b/drivers/gpu/drm/i915/gt/selftest_mocs.c
@@ -57,33 +57,6 @@ static int request_add_spin(struct i915_request *rq, struct igt_spinner *spin)
return err;
}
-static struct i915_vma *create_scratch(struct intel_gt *gt)
-{
- struct drm_i915_gem_object *obj;
- struct i915_vma *vma;
- int err;
-
- obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
- if (IS_ERR(obj))
- return ERR_CAST(obj);
-
- i915_gem_object_set_cache_coherency(obj, I915_CACHING_CACHED);
-
- vma = i915_vma_instance(obj, >->ggtt->vm, NULL);
- if (IS_ERR(vma)) {
- i915_gem_object_put(obj);
- return vma;
- }
-
- err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL);
- if (err) {
- i915_gem_object_put(obj);
- return ERR_PTR(err);
- }
-
- return vma;
-}
-
static int live_mocs_init(struct live_mocs *arg, struct intel_gt *gt)
{
struct drm_i915_mocs_table table;
@@ -102,7 +75,7 @@ static int live_mocs_init(struct live_mocs *arg, struct intel_gt *gt)
if (flags & (HAS_GLOBAL_MOCS | HAS_ENGINE_MOCS))
arg->mocs = table;
- arg->scratch = create_scratch(gt);
+ arg->scratch = __vm_create_scratch_for_read(>->ggtt->vm, PAGE_SIZE);
if (IS_ERR(arg->scratch))
return PTR_ERR(arg->scratch);
diff --git a/drivers/gpu/drm/i915/gt/selftest_workarounds.c b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
index 703b77207a47..2070b91cb607 100644
--- a/drivers/gpu/drm/i915/gt/selftest_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
@@ -486,10 +486,11 @@ static int check_dirty_whitelist(struct intel_context *ce)
struct intel_engine_cs *engine = ce->engine;
struct i915_vma *scratch;
struct i915_vma *batch;
- int err = 0, i, v;
+ int err = 0, i, v, sz;
u32 *cs, *results;
- scratch = create_scratch(ce->vm, 2 * ARRAY_SIZE(values) + 1);
+ sz = (2 * ARRAY_SIZE(values) + 1) * sizeof(u32);
+ scratch = __vm_create_scratch_for_read(ce->vm, sz);
if (IS_ERR(scratch))
return PTR_ERR(scratch);
@@ -1028,13 +1029,15 @@ static int live_isolated_whitelist(void *arg)
return 0;
for (i = 0; i < ARRAY_SIZE(client); i++) {
- client[i].scratch[0] = create_scratch(gt->vm, 1024);
+ client[i].scratch[0] =
+ __vm_create_scratch_for_read(gt->vm, 4096);
if (IS_ERR(client[i].scratch[0])) {
err = PTR_ERR(client[i].scratch[0]);
goto err;
}
- client[i].scratch[1] = create_scratch(gt->vm, 1024);
+ client[i].scratch[1] =
+ __vm_create_scratch_for_read(gt->vm, 4096);
if (IS_ERR(client[i].scratch[1])) {
err = PTR_ERR(client[i].scratch[1]);
i915_vma_unpin_and_release(&client[i].scratch[0], 0);
--
2.20.1
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