drm/radeon: Use the ttm execbuf utilities

Rather than re-implementing in the Radeon driver,
Use the execbuf / cs / pushbuf utilities that comes with TTM.
This comes with an even greater benefit now that many spinlocks have been
optimized away...
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/radeon.h

@@ -69,6 +69,7 @@
 #include <ttm/ttm_bo_driver.h>
 #include <ttm/ttm_placement.h>
 #include <ttm/ttm_module.h>
+#include <ttm/ttm_execbuf_util.h>
 
 #include "radeon_family.h"
 #include "radeon_mode.h"
@@ -259,13 +260,12 @@ struct radeon_bo {
 };
 
 struct radeon_bo_list {
-	struct list_head	list;
+	struct ttm_validate_buffer tv;
 	struct radeon_bo	*bo;
 	uint64_t		gpu_offset;
 	unsigned		rdomain;
 	unsigned		wdomain;
 	u32			tiling_flags;
-	bool			reserved;
 };
 
 /*

drivers/gpu/drm/radeon/radeon_cs.c

@@ -77,13 +77,13 @@ int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
 			p->relocs_ptr[i] = &p->relocs[i];
 			p->relocs[i].robj = p->relocs[i].gobj->driver_private;
 			p->relocs[i].lobj.bo = p->relocs[i].robj;
-			p->relocs[i].lobj.rdomain = r->read_domains;
 			p->relocs[i].lobj.wdomain = r->write_domain;
+			p->relocs[i].lobj.rdomain = r->read_domains;
+			p->relocs[i].lobj.tv.bo = &p->relocs[i].robj->tbo;
 			p->relocs[i].handle = r->handle;
 			p->relocs[i].flags = r->flags;
-			INIT_LIST_HEAD(&p->relocs[i].lobj.list);
 			radeon_bo_list_add_object(&p->relocs[i].lobj,
-						&p->validated);
+						  &p->validated);
 		}
 	}
 	return radeon_bo_list_validate(&p->validated);
@@ -189,10 +189,13 @@ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
 {
 	unsigned i;
 
-	if (!error && parser->ib) {
-		radeon_bo_list_fence(&parser->validated, parser->ib->fence);
-	}
-	radeon_bo_list_unreserve(&parser->validated);
+
+	if (!error && parser->ib)
+		ttm_eu_fence_buffer_objects(&parser->validated,
+					    parser->ib->fence);
+	else
+		ttm_eu_backoff_reservation(&parser->validated);
+
 	if (parser->relocs != NULL) {
 		for (i = 0; i < parser->nrelocs; i++) {
 			if (parser->relocs[i].gobj)

drivers/gpu/drm/radeon/radeon_object.c

@@ -293,34 +293,9 @@ void radeon_bo_list_add_object(struct radeon_bo_list *lobj,
 				struct list_head *head)
 {
 	if (lobj->wdomain) {
-		list_add(&lobj->list, head);
+		list_add(&lobj->tv.head, head);
 	} else {
-		list_add_tail(&lobj->list, head);
-	}
-}
-
-int radeon_bo_list_reserve(struct list_head *head)
-{
-	struct radeon_bo_list *lobj;
-	int r;
-
-	list_for_each_entry(lobj, head, list){
-		r = radeon_bo_reserve(lobj->bo, false);
-		if (unlikely(r != 0))
-			return r;
-		lobj->reserved = true;
-	}
-	return 0;
-}
-
-void radeon_bo_list_unreserve(struct list_head *head)
-{
-	struct radeon_bo_list *lobj;
-
-	list_for_each_entry(lobj, head, list) {
-		/* only unreserve object we successfully reserved */
-		if (lobj->reserved && radeon_bo_is_reserved(lobj->bo))
-			radeon_bo_unreserve(lobj->bo);
+		list_add_tail(&lobj->tv.head, head);
 	}
 }
 
@@ -331,14 +306,11 @@ int radeon_bo_list_validate(struct list_head *head)
 	u32 domain;
 	int r;
 
-	list_for_each_entry(lobj, head, list) {
-		lobj->reserved = false;
-	}
-	r = radeon_bo_list_reserve(head);
+	r = ttm_eu_reserve_buffers(head);
 	if (unlikely(r != 0)) {
 		return r;
 	}
-	list_for_each_entry(lobj, head, list) {
+	list_for_each_entry(lobj, head, tv.head) {
 		bo = lobj->bo;
 		if (!bo->pin_count) {
 			domain = lobj->wdomain ? lobj->wdomain : lobj->rdomain;
@@ -361,25 +333,6 @@ int radeon_bo_list_validate(struct list_head *head)
 	return 0;
 }
 
-void radeon_bo_list_fence(struct list_head *head, void *fence)
-{
-	struct radeon_bo_list *lobj;
-	struct radeon_bo *bo;
-	struct radeon_fence *old_fence = NULL;
-
-	list_for_each_entry(lobj, head, list) {
-		bo = lobj->bo;
-		spin_lock(&bo->tbo.bdev->fence_lock);
-		old_fence = (struct radeon_fence *)bo->tbo.sync_obj;
-		bo->tbo.sync_obj = radeon_fence_ref(fence);
-		bo->tbo.sync_obj_arg = NULL;
-		spin_unlock(&bo->tbo.bdev->fence_lock);
-		if (old_fence) {
-			radeon_fence_unref(&old_fence);
-		}
-	}
-}
-
 int radeon_bo_fbdev_mmap(struct radeon_bo *bo,
 			     struct vm_area_struct *vma)
 {

drivers/gpu/drm/radeon/radeon_object.h

@@ -152,10 +152,7 @@ extern int radeon_bo_init(struct radeon_device *rdev);
 extern void radeon_bo_fini(struct radeon_device *rdev);
 extern void radeon_bo_list_add_object(struct radeon_bo_list *lobj,
 				struct list_head *head);
-extern int radeon_bo_list_reserve(struct list_head *head);
-extern void radeon_bo_list_unreserve(struct list_head *head);
 extern int radeon_bo_list_validate(struct list_head *head);
-extern void radeon_bo_list_fence(struct list_head *head, void *fence);
 extern int radeon_bo_fbdev_mmap(struct radeon_bo *bo,
 				struct vm_area_struct *vma);
 extern int radeon_bo_set_tiling_flags(struct radeon_bo *bo,