drm/i915: Move pinning to inside engine_wa_list_verify()

This should be done as part of the ww loop, in order to remove a
i915_vma_pin that needs ww held.

Now only i915_ggtt_pin() callers remaining.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-25-maarten.lankhorst@linux.intel.com

drivers/gpu/drm/i915/gt/intel_gtt.c

@@ -427,7 +427,6 @@ __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))
@@ -441,6 +440,19 @@ __vm_create_scratch_for_read(struct i915_address_space *vm, unsigned long size)
 		return vma;
 	}
 
+	return vma;
+}
+
+struct i915_vma *
+__vm_create_scratch_for_read_pinned(struct i915_address_space *vm, unsigned long size)
+{
+	struct i915_vma *vma;
+	int err;
+
+	vma = __vm_create_scratch_for_read(vm, size);
+	if (IS_ERR(vma))
+		return vma;
+
 	err = i915_vma_pin(vma, 0, 0,
 			   i915_vma_is_ggtt(vma) ? PIN_GLOBAL : PIN_USER);
 	if (err) {

drivers/gpu/drm/i915/gt/intel_gtt.h

@@ -576,6 +576,9 @@ void i915_vm_free_pt_stash(struct i915_address_space *vm,
 struct i915_vma *
 __vm_create_scratch_for_read(struct i915_address_space *vm, unsigned long size);
 
+struct i915_vma *
+__vm_create_scratch_for_read_pinned(struct i915_address_space *vm, unsigned long size);
+
 static inline struct sgt_dma {
 	struct scatterlist *sg;
 	dma_addr_t dma, max;

drivers/gpu/drm/i915/gt/intel_workarounds.c

@@ -2213,10 +2213,15 @@ static int engine_wa_list_verify(struct intel_context *ce,
 	if (err)
 		goto err_pm;
 
+	err = i915_vma_pin_ww(vma, &ww, 0, 0,
+			   i915_vma_is_ggtt(vma) ? PIN_GLOBAL : PIN_USER);
+	if (err)
+		goto err_unpin;
+
 	rq = i915_request_create(ce);
 	if (IS_ERR(rq)) {
 		err = PTR_ERR(rq);
-		goto err_unpin;
+		goto err_vma;
 	}
 
 	err = i915_request_await_object(rq, vma->obj, true);
@@ -2257,6 +2262,8 @@ static int engine_wa_list_verify(struct intel_context *ce,
 
 err_rq:
 	i915_request_put(rq);
+err_vma:
+	i915_vma_unpin(vma);
 err_unpin:
 	intel_context_unpin(ce);
 err_pm:
@@ -2267,7 +2274,6 @@ static int engine_wa_list_verify(struct intel_context *ce,
 	}
 	i915_gem_ww_ctx_fini(&ww);
 	intel_engine_pm_put(ce->engine);
-	i915_vma_unpin(vma);
 	i915_vma_put(vma);
 	return err;
 }

drivers/gpu/drm/i915/gt/selftest_execlists.c

@@ -4197,8 +4197,9 @@ static int preserved_virtual_engine(struct intel_gt *gt,
 	int err = 0;
 	u32 *cs;
 
-	scratch = __vm_create_scratch_for_read(&siblings[0]->gt->ggtt->vm,
-					       PAGE_SIZE);
+	scratch =
+		__vm_create_scratch_for_read_pinned(&siblings[0]->gt->ggtt->vm,
+						    PAGE_SIZE);
 	if (IS_ERR(scratch))
 		return PTR_ERR(scratch);
 

drivers/gpu/drm/i915/gt/selftest_lrc.c

@@ -27,7 +27,7 @@
 
 static struct i915_vma *create_scratch(struct intel_gt *gt)
 {
-	return __vm_create_scratch_for_read(&gt->ggtt->vm, PAGE_SIZE);
+	return __vm_create_scratch_for_read_pinned(&gt->ggtt->vm, PAGE_SIZE);
 }
 
 static bool is_active(struct i915_request *rq)

drivers/gpu/drm/i915/gt/selftest_mocs.c

@@ -75,7 +75,8 @@ 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 = __vm_create_scratch_for_read(&gt->ggtt->vm, PAGE_SIZE);
+	arg->scratch =
+		__vm_create_scratch_for_read_pinned(&gt->ggtt->vm, PAGE_SIZE);
 	if (IS_ERR(arg->scratch))
 		return PTR_ERR(arg->scratch);
 

drivers/gpu/drm/i915/gt/selftest_workarounds.c

@@ -490,7 +490,7 @@ static int check_dirty_whitelist(struct intel_context *ce)
 	u32 *cs, *results;
 
 	sz = (2 * ARRAY_SIZE(values) + 1) * sizeof(u32);
-	scratch = __vm_create_scratch_for_read(ce->vm, sz);
+	scratch = __vm_create_scratch_for_read_pinned(ce->vm, sz);
 	if (IS_ERR(scratch))
 		return PTR_ERR(scratch);
 
@@ -1030,14 +1030,14 @@ static int live_isolated_whitelist(void *arg)
 
 	for (i = 0; i < ARRAY_SIZE(client); i++) {
 		client[i].scratch[0] =
-			__vm_create_scratch_for_read(gt->vm, 4096);
+			__vm_create_scratch_for_read_pinned(gt->vm, 4096);
 		if (IS_ERR(client[i].scratch[0])) {
 			err = PTR_ERR(client[i].scratch[0]);
 			goto err;
 		}
 
 		client[i].scratch[1] =
-			__vm_create_scratch_for_read(gt->vm, 4096);
+			__vm_create_scratch_for_read_pinned(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);