drm/amdgpu: correct programming of ih_chicken for Arcturus

ih_chicken is a register that is not allowed to access by driver
in the L0 security policy.
psp bl need to enable field to allow driver to use physical
bus address for ih ring on secure part.
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Snow Zhang <snow.zhang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vega10_ih.c

@@ -219,7 +219,7 @@ static uint32_t vega10_ih_doorbell_rptr(struct amdgpu_ih_ring *ih)
 static int vega10_ih_irq_init(struct amdgpu_device *adev)
 {
 	struct amdgpu_ih_ring *ih;
-	u32 ih_rb_cntl;
+	u32 ih_rb_cntl, ih_chicken;
 	int ret = 0;
 	u32 tmp;
 
@@ -247,6 +247,15 @@ static int vega10_ih_irq_init(struct amdgpu_device *adev)
 		WREG32_SOC15(OSSSYS, 0, mmIH_RB_CNTL, ih_rb_cntl);
 	}
 
+	if (adev->asic_type == CHIP_ARCTURUS &&
+		adev->firmware.load_type == AMDGPU_FW_LOAD_DIRECT) {
+		if (adev->irq.ih.use_bus_addr) {
+			ih_chicken = RREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN);
+			ih_chicken |= 0x00000010;
+			WREG32_SOC15(OSSSYS, 0, mmIH_CHICKEN, ih_chicken);
+		}
+	}
+
 	/* set the writeback address whether it's enabled or not */
 	WREG32_SOC15(OSSSYS, 0, mmIH_RB_WPTR_ADDR_LO,
 		     lower_32_bits(ih->wptr_addr));