drm/radeon: Use the drm suballocation manager implementation.

Use the generic suballocation helper for radeon.

v3:
- Select the suballoc helper in Kconfig (Thomas).

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Co-developed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230224095152.30134-4-thomas.hellstrom@linux.intel.com

1 files changed, 8 insertions, 47 deletions

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 57e20780a458..d19a4b1c1a8f 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -79,6 +79,7 @@
 
 #include <drm/drm_gem.h>
 #include <drm/drm_audio_component.h>
+#include <drm/drm_suballoc.h>
 
 #include "radeon_family.h"
 #include "radeon_mode.h"
@@ -511,52 +512,12 @@ struct radeon_bo {
 };
 #define gem_to_radeon_bo(gobj) container_of((gobj), struct radeon_bo, tbo.base)
 
-/* sub-allocation manager, it has to be protected by another lock.
- * By conception this is an helper for other part of the driver
- * like the indirect buffer or semaphore, which both have their
- * locking.
- *
- * Principe is simple, we keep a list of sub allocation in offset
- * order (first entry has offset == 0, last entry has the highest
- * offset).
- *
- * When allocating new object we first check if there is room at
- * the end total_size - (last_object_offset + last_object_size) >=
- * alloc_size. If so we allocate new object there.
- *
- * When there is not enough room at the end, we start waiting for
- * each sub object until we reach object_offset+object_size >=
- * alloc_size, this object then become the sub object we return.
- *
- * Alignment can't be bigger than page size.
- *
- * Hole are not considered for allocation to keep things simple.
- * Assumption is that there won't be hole (all object on same
- * alignment).
- */
 struct radeon_sa_manager {
-	wait_queue_head_t	wq;
-	struct radeon_bo	*bo;
-	struct list_head	*hole;
-	struct list_head	flist[RADEON_NUM_RINGS];
-	struct list_head	olist;
-	unsigned		size;
-	uint64_t		gpu_addr;
-	void			*cpu_ptr;
-	uint32_t		domain;
-	uint32_t		align;
-};
-
-struct radeon_sa_bo;
-
-/* sub-allocation buffer */
-struct radeon_sa_bo {
-	struct list_head		olist;
-	struct list_head		flist;
-	struct radeon_sa_manager	*manager;
-	unsigned			soffset;
-	unsigned			eoffset;
-	struct radeon_fence		*fence;
+	struct drm_suballoc_manager	base;
+	struct radeon_bo		*bo;
+	uint64_t			gpu_addr;
+	void				*cpu_ptr;
+	u32 domain;
 };
 
 /*
@@ -587,7 +548,7 @@ int radeon_mode_dumb_mmap(struct drm_file *filp,
  * Semaphores.
  */
 struct radeon_semaphore {
-	struct radeon_sa_bo	*sa_bo;
+	struct drm_suballoc	*sa_bo;
 	signed			waiters;
 	uint64_t		gpu_addr;
 };
@@ -816,7 +777,7 @@ void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask);
  */
 
 struct radeon_ib {
-	struct radeon_sa_bo		*sa_bo;
+	struct drm_suballoc		*sa_bo;
 	uint32_t			length_dw;
 	uint64_t			gpu_addr;
 	uint32_t			*ptr;