drm/radeon: introduce a sub allocator and convert ib pool to it v4

Somewhat specializaed sub-allocator designed to perform sub-allocation
for command buffer not only for current cs ioctl but for future command
submission ioctl as well. Patch also convert current ib pool to use
the sub allocator. Idea is that ib poll buffer can be share with other
command buffer submission not having 64K granularity.

v2 Harmonize pool handling and add suspend/resume callback to pin/unpin
sa bo (tested on rv280, rv370, r420, rv515, rv610, rv710, redwood, cayman,
rs480, rs690, rs880)
v3 Simplify allocator
v4 Fix radeon_ib_get error path to properly free fence

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
index b07f0f9b8627..cc236fb128ae 100644
--- a/drivers/gpu/drm/radeon/radeon_object.h
+++ b/drivers/gpu/drm/radeon/radeon_object.h
@@ -128,4 +128,24 @@ extern void radeon_bo_move_notify(struct ttm_buffer_object *bo,
                                         struct ttm_mem_reg *mem);
 extern int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
 extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);
+
+/*
+ * sub allocation
+ */
+extern int radeon_sa_bo_manager_init(struct radeon_device *rdev,
+                                     struct radeon_sa_manager *sa_manager,
+                                     unsigned size, u32 domain);
+extern void radeon_sa_bo_manager_fini(struct radeon_device *rdev,
+                                      struct radeon_sa_manager *sa_manager);
+extern int radeon_sa_bo_manager_start(struct radeon_device *rdev,
+                                      struct radeon_sa_manager *sa_manager);
+extern int radeon_sa_bo_manager_suspend(struct radeon_device *rdev,
+                                        struct radeon_sa_manager *sa_manager);
+extern int radeon_sa_bo_new(struct radeon_device *rdev,
+                            struct radeon_sa_manager *sa_manager,
+                            struct radeon_sa_bo *sa_bo,
+                            unsigned size, unsigned align);
+extern void radeon_sa_bo_free(struct radeon_device *rdev,
+                              struct radeon_sa_bo *sa_bo);
+
 #endif