drm/amd: Convert amdgpu to use suballocation helper.

Now that we have a generic suballocation helper, Use it in amdgpu.
For lines that get moved or changed, also fix up pre-existing style issues.
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: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230224095152.30134-3-thomas.hellstrom@linux.intel.com

drivers/gpu/drm/amd/amdgpu/Kconfig

@@ -18,6 +18,7 @@ config DRM_AMDGPU
 	select BACKLIGHT_CLASS_DEVICE
 	select INTERVAL_TREE
 	select DRM_BUDDY
+	select DRM_SUBALLOC_HELPER
 	# amdgpu depends on ACPI_VIDEO when ACPI is enabled, for select to work
 	# ACPI_VIDEO's dependencies must also be selected.
 	select INPUT if ACPI

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -423,29 +423,11 @@ struct amdgpu_clock {
  * alignment).
  */
 
-#define AMDGPU_SA_NUM_FENCE_LISTS	32
-
 struct amdgpu_sa_manager {
-	wait_queue_head_t	wq;
-	struct amdgpu_bo	*bo;
-	struct list_head	*hole;
-	struct list_head	flist[AMDGPU_SA_NUM_FENCE_LISTS];
-	struct list_head	olist;
-	unsigned		size;
-	uint64_t		gpu_addr;
-	void			*cpu_ptr;
-	uint32_t		domain;
-	uint32_t		align;
-};
-
-/* sub-allocation buffer */
-struct amdgpu_sa_bo {
-	struct list_head		olist;
-	struct list_head		flist;
-	struct amdgpu_sa_manager	*manager;
-	unsigned			soffset;
-	unsigned			eoffset;
-	struct dma_fence	        *fence;
+	struct drm_suballoc_manager	base;
+	struct amdgpu_bo		*bo;
+	uint64_t			gpu_addr;
+	void				*cpu_ptr;
 };
 
 int amdgpu_fence_slab_init(void);

drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c

@@ -69,7 +69,7 @@ int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
 
 	if (size) {
 		r = amdgpu_sa_bo_new(&adev->ib_pools[pool_type],
-				      &ib->sa_bo, size, 256);
+				     &ib->sa_bo, size);
 		if (r) {
 			dev_err(adev->dev, "failed to get a new IB (%d)\n", r);
 			return r;
@@ -309,8 +309,7 @@ int amdgpu_ib_pool_init(struct amdgpu_device *adev)
 
 	for (i = 0; i < AMDGPU_IB_POOL_MAX; i++) {
 		r = amdgpu_sa_bo_manager_init(adev, &adev->ib_pools[i],
-					      AMDGPU_IB_POOL_SIZE,
-					      AMDGPU_GPU_PAGE_SIZE,
+					      AMDGPU_IB_POOL_SIZE, 256,
 					      AMDGPU_GEM_DOMAIN_GTT);
 		if (r)
 			goto error;

drivers/gpu/drm/amd/amdgpu/amdgpu_object.h

@@ -336,15 +336,22 @@ uint32_t amdgpu_bo_get_preferred_domain(struct amdgpu_device *adev,
 /*
  * sub allocation
  */
+static inline struct amdgpu_sa_manager *
+to_amdgpu_sa_manager(struct drm_suballoc_manager *manager)
+{
+	return container_of(manager, struct amdgpu_sa_manager, base);
+}
 
-static inline uint64_t amdgpu_sa_bo_gpu_addr(struct amdgpu_sa_bo *sa_bo)
+static inline uint64_t amdgpu_sa_bo_gpu_addr(struct drm_suballoc *sa_bo)
 {
-	return sa_bo->manager->gpu_addr + sa_bo->soffset;
+	return to_amdgpu_sa_manager(sa_bo->manager)->gpu_addr +
+		drm_suballoc_soffset(sa_bo);
 }
 
-static inline void * amdgpu_sa_bo_cpu_addr(struct amdgpu_sa_bo *sa_bo)
+static inline void *amdgpu_sa_bo_cpu_addr(struct drm_suballoc *sa_bo)
 {
-	return sa_bo->manager->cpu_ptr + sa_bo->soffset;
+	return to_amdgpu_sa_manager(sa_bo->manager)->cpu_ptr +
+		drm_suballoc_soffset(sa_bo);
 }
 
 int amdgpu_sa_bo_manager_init(struct amdgpu_device *adev,
@@ -355,11 +362,11 @@ void amdgpu_sa_bo_manager_fini(struct amdgpu_device *adev,
 int amdgpu_sa_bo_manager_start(struct amdgpu_device *adev,
 				      struct amdgpu_sa_manager *sa_manager);
 int amdgpu_sa_bo_new(struct amdgpu_sa_manager *sa_manager,
-		     struct amdgpu_sa_bo **sa_bo,
-		     unsigned size, unsigned align);
+		     struct drm_suballoc **sa_bo,
+		     unsigned int size);
 void amdgpu_sa_bo_free(struct amdgpu_device *adev,
-			      struct amdgpu_sa_bo **sa_bo,
-			      struct dma_fence *fence);
+		       struct drm_suballoc **sa_bo,
+		       struct dma_fence *fence);
 #if defined(CONFIG_DEBUG_FS)
 void amdgpu_sa_bo_dump_debug_info(struct amdgpu_sa_manager *sa_manager,
 					 struct seq_file *m);

drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h

@@ -27,6 +27,7 @@
 #include <drm/amdgpu_drm.h>
 #include <drm/gpu_scheduler.h>
 #include <drm/drm_print.h>
+#include <drm/drm_suballoc.h>
 
 struct amdgpu_device;
 struct amdgpu_ring;
@@ -92,7 +93,7 @@ enum amdgpu_ib_pool_type {
 };
 
 struct amdgpu_ib {
-	struct amdgpu_sa_bo		*sa_bo;
+	struct drm_suballoc		*sa_bo;
 	uint32_t			length_dw;
 	uint64_t			gpu_addr;
 	uint32_t			*ptr;