drm/radeon: simplify semaphore handling v2
Directly use the suballocator to get small chunks of memory.
It's equally fast and doesn't crash when we encounter a GPU reset.
v2: rebased on new SA interface.
Signed-off-by: Christian König <deathsimple@vodafone.de>
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index cc7f16a..45164e1 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -434,34 +434,13 @@
/*
* Semaphores.
*/
-struct radeon_ring;
-
-#define RADEON_SEMAPHORE_BO_SIZE 256
-
-struct radeon_semaphore_driver {
- rwlock_t lock;
- struct list_head bo;
-};
-
-struct radeon_semaphore_bo;
-
/* everything here is constant */
struct radeon_semaphore {
- struct list_head list;
+ struct radeon_sa_bo *sa_bo;
+ signed waiters;
uint64_t gpu_addr;
- uint32_t *cpu_ptr;
- struct radeon_semaphore_bo *bo;
};
-struct radeon_semaphore_bo {
- struct list_head list;
- struct radeon_ib *ib;
- struct list_head free;
- struct radeon_semaphore semaphores[RADEON_SEMAPHORE_BO_SIZE/8];
- unsigned nused;
-};
-
-void radeon_semaphore_driver_fini(struct radeon_device *rdev);
int radeon_semaphore_create(struct radeon_device *rdev,
struct radeon_semaphore **semaphore);
void radeon_semaphore_emit_signal(struct radeon_device *rdev, int ring,
@@ -473,7 +452,8 @@
bool sync_to[RADEON_NUM_RINGS],
int dst_ring);
void radeon_semaphore_free(struct radeon_device *rdev,
- struct radeon_semaphore *semaphore);
+ struct radeon_semaphore *semaphore,
+ struct radeon_fence *fence);
/*
* GART structures, functions & helpers
@@ -1540,7 +1520,6 @@
struct radeon_mman mman;
struct radeon_fence_driver fence_drv[RADEON_NUM_RINGS];
wait_queue_head_t fence_queue;
- struct radeon_semaphore_driver semaphore_drv;
struct mutex ring_lock;
struct radeon_ring ring[RADEON_NUM_RINGS];
struct radeon_ib_pool ib_pool;