drm/amdgpu/sdma6: set sdma hang watchdog

Set SDMAx_WATCHDOG_CNTL.QUEUE_HANG_COUNT registers
to improve SDMA reliability.

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Jack Xiao

drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c

@@ -507,6 +507,13 @@ static int sdma_v6_0_gfx_resume(struct amdgpu_device *adev)
 		/* set minor_ptr_update to 0 after wptr programed */
 		WREG32_SOC15_IP(GC, sdma_v6_0_get_reg_offset(adev, i, regSDMA0_QUEUE0_MINOR_PTR_UPDATE), 0);
 
+		/* Set up sdma hang watchdog */
+		temp = RREG32_SOC15_IP(GC, sdma_v6_0_get_reg_offset(adev, i, regSDMA0_WATCHDOG_CNTL));
+		/* 100ms per unit */
+		temp = REG_SET_FIELD(temp, SDMA0_WATCHDOG_CNTL, QUEUE_HANG_COUNT,
+				     max(adev->usec_timeout/100000, 1));
+		WREG32_SOC15_IP(GC, sdma_v6_0_get_reg_offset(adev, i, regSDMA0_WATCHDOG_CNTL), temp);
+
 		/* Set up RESP_MODE to non-copy addresses */
 		temp = RREG32_SOC15_IP(GC, sdma_v6_0_get_reg_offset(adev, i, regSDMA0_UTCL1_CNTL));
 		temp = REG_SET_FIELD(temp, SDMA0_UTCL1_CNTL, RESP_MODE, 3);