drm/amdgpu add ce_ram_size for interface query

Add a query for the CE ram size.  User mode drivers
will want to use this to determine how much size
of the cache on the CE.
Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewd-by: Jammy Zhou <Jammy.Zhou@amd.com>

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

@@ -1136,6 +1136,8 @@ struct amdgpu_gfx {
 	uint32_t gfx_current_status;
 	/* sync signal for const engine */
 	unsigned ce_sync_offs;
+	/* ce ram size*/
+	unsigned ce_ram_size;
 };
 
 int amdgpu_ib_get(struct amdgpu_ring *ring, struct amdgpu_vm *vm,

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

@@ -441,6 +441,7 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
 		amdgpu_asic_get_cu_info(adev, &cu_info);
 		dev_info.cu_active_number = cu_info.number;
 		dev_info.cu_ao_mask = cu_info.ao_cu_mask;
+		dev_info.ce_ram_size = adev->gfx.ce_ram_size;
 		memcpy(&dev_info.cu_bitmap[0], &cu_info.bitmap[0], sizeof(cu_info.bitmap));
 
 		return copy_to_user(out, &dev_info,

drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c

@@ -4820,6 +4820,8 @@ static int gfx_v7_0_hw_init(void *handle)
 	if (r)
 		return r;
 
+	adev->gfx.ce_ram_size = 0x8000;
+
 	return r;
 }
 

drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c

@@ -895,6 +895,8 @@ static int gfx_v8_0_sw_init(void *handle)
 	if (r)
 		return r;
 
+	adev->gfx.ce_ram_size = 0x8000;
+
 	return 0;
 }
 

include/uapi/drm/amdgpu_drm.h

@@ -573,6 +573,8 @@ struct drm_amdgpu_info_device {
 	/** Page table entry - fragment size */
 	uint32_t pte_fragment_size;
 	uint32_t gart_page_size;
+	/** constant engine ram size*/
+	uint32_t ce_ram_size;
 };
 
 struct drm_amdgpu_info_hw_ip {