amdgpu: add flag to support 32bit VA address v4
The AMDGPU_VA_RANGE_32_BIT flag is added to request VA range in the
32bit address space for amdgpu_va_range_alloc.
The 32bit address space is reserved at initialization time, and managed
with a separate VAMGR as part of the global VAMGR. And if no enough VA
space available in range above 4GB, this reserved range can be used as
fallback.
v2: add comment for AMDGPU_VA_RANGE_32_BIT, and add vamgr to va_range
v3: rebase to Emil's drm_private series
v4: fix one warning
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
diff --git a/amdgpu/amdgpu_internal.h b/amdgpu/amdgpu_internal.h
index 4b07aff..3ce0969 100644
--- a/amdgpu/amdgpu_internal.h
+++ b/amdgpu/amdgpu_internal.h
@@ -66,6 +66,7 @@
uint64_t address;
uint64_t size;
enum amdgpu_gpu_va_range range;
+ struct amdgpu_bo_va_mgr *vamgr;
};
struct amdgpu_device {
@@ -83,7 +84,10 @@
pthread_mutex_t bo_table_mutex;
struct drm_amdgpu_info_device dev_info;
struct amdgpu_gpu_info info;
+ /** The global VA manager for the whole virtual address space */
struct amdgpu_bo_va_mgr *vamgr;
+ /** The VA manager for the 32bit address space */
+ struct amdgpu_bo_va_mgr *vamgr_32;
};
struct amdgpu_bo {
@@ -128,6 +132,11 @@
amdgpu_vamgr_reference(struct amdgpu_bo_va_mgr **dst,
struct amdgpu_bo_va_mgr *src);
+drm_private void amdgpu_vamgr_init(struct amdgpu_bo_va_mgr *mgr, uint64_t start,
+ uint64_t max, uint64_t alignment);
+
+drm_private void amdgpu_vamgr_deinit(struct amdgpu_bo_va_mgr *mgr);
+
drm_private uint64_t
amdgpu_vamgr_find_va(struct amdgpu_bo_va_mgr *mgr, uint64_t size,
uint64_t alignment, uint64_t base_required);