drm/amdgpu: Use PSP FW API for partition switch

Use PSP firmware interface for switching compute partitions.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Lijo Lazar

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

@@ -518,9 +518,6 @@ static int aqua_vanjaram_switch_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr,
 		adev->gfx.funcs->switch_partition_mode(xcp_mgr->adev,
 						       num_xcc_per_xcp);
 
-	if (adev->nbio.funcs->set_compute_partition_mode)
-		adev->nbio.funcs->set_compute_partition_mode(adev, mode);
-
 	/* Init info about new xcps */
 	*num_xcps = num_xcc / num_xcc_per_xcp;
 	amdgpu_xcp_init(xcp_mgr, *num_xcps, mode);

drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c

@@ -623,22 +623,16 @@ static void gfx_v9_4_3_select_me_pipe_q(struct amdgpu_device *adev,
 static int gfx_v9_4_3_switch_compute_partition(struct amdgpu_device *adev,
 						int num_xccs_per_xcp)
 {
-	int i, num_xcc;
-	u32 tmp = 0;
-
-	num_xcc = NUM_XCC(adev->gfx.xcc_mask);
+	int ret;
 
-	for (i = 0; i < num_xcc; i++) {
-		tmp = REG_SET_FIELD(tmp, CP_HYP_XCP_CTL, NUM_XCC_IN_XCP,
-				    num_xccs_per_xcp);
-		tmp = REG_SET_FIELD(tmp, CP_HYP_XCP_CTL, VIRTUAL_XCC_ID,
-				    i % num_xccs_per_xcp);
-		WREG32_SOC15(GC, GET_INST(GC, i), regCP_HYP_XCP_CTL, tmp);
-	}
+	ret = psp_spatial_partition(&adev->psp, NUM_XCC(adev->gfx.xcc_mask) /
+							num_xccs_per_xcp);
+	if (ret)
+		return ret;
 
 	adev->gfx.num_xcc_per_xcp = num_xccs_per_xcp;
 
-	return 0;
+	return ret;
 }
 
 static int gfx_v9_4_3_ih_to_xcc_inst(struct amdgpu_device *adev, int ih_node)