drm/amdgpu: Need to set the baco cap before baco reset

For passthrough, after rebooted the VM, driver will do
a baco reset before doing other driver initialization during loading
 driver. For doing the baco reset, it will first
check the baco reset capability. So first need to set the
cap from the vbios information or baco reset won't be
enabled.

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1541,6 +1541,17 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
 	if (amdgpu_sriov_vf(adev))
 		adev->pm.pp_feature &= ~PP_GFXOFF_MASK;
 
+	/* Read BIOS */
+	if (!amdgpu_get_bios(adev))
+		return -EINVAL;
+
+	r = amdgpu_atombios_init(adev);
+	if (r) {
+		dev_err(adev->dev, "amdgpu_atombios_init failed\n");
+		amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
+		return r;
+	}
+
 	for (i = 0; i < adev->num_ip_blocks; i++) {
 		if ((amdgpu_ip_block_mask & (1 << i)) == 0) {
 			DRM_ERROR("disabled ip block: %d <%s>\n",
@@ -2591,19 +2602,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 		goto fence_driver_init;
 	}
 
-	/* Read BIOS */
-	if (!amdgpu_get_bios(adev)) {
-		r = -EINVAL;
-		goto failed;
-	}
-
-	r = amdgpu_atombios_init(adev);
-	if (r) {
-		dev_err(adev->dev, "amdgpu_atombios_init failed\n");
-		amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
-		goto failed;
-	}
-
 	/* detect if we are with an SRIOV vbios */
 	amdgpu_device_detect_sriov_bios(adev);
 

drivers/gpu/drm/amd/amdgpu/soc15.c

@@ -764,7 +764,8 @@ static bool soc15_need_reset_on_init(struct amdgpu_device *adev)
 	/* Just return false for soc15 GPUs.  Reset does not seem to
 	 * be necessary.
 	 */
-	return false;
+	if (!amdgpu_passthrough(adev))
+		return false;
 
 	if (adev->flags & AMD_IS_APU)
 		return false;

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c

@@ -5311,8 +5311,12 @@ static const struct pp_hwmgr_func vega10_hwmgr_funcs = {
 
 int vega10_hwmgr_init(struct pp_hwmgr *hwmgr)
 {
+	struct amdgpu_device *adev = hwmgr->adev;
+
 	hwmgr->hwmgr_func = &vega10_hwmgr_funcs;
 	hwmgr->pptable_func = &vega10_pptable_funcs;
+	if (amdgpu_passthrough(adev))
+		return vega10_baco_set_cap(hwmgr);
 
 	return 0;
 }

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_processpptables.c

@@ -1371,3 +1371,27 @@ int vega10_get_powerplay_table_entry(struct pp_hwmgr *hwmgr,
 
 	return result;
 }
+
+int vega10_baco_set_cap(struct pp_hwmgr *hwmgr)
+{
+	int result = 0;
+
+	const ATOM_Vega10_POWERPLAYTABLE *powerplay_table;
+
+	powerplay_table = get_powerplay_table(hwmgr);
+
+	PP_ASSERT_WITH_CODE((powerplay_table != NULL),
+		"Missing PowerPlay Table!", return -1);
+
+	result = check_powerplay_tables(hwmgr, powerplay_table);
+
+	PP_ASSERT_WITH_CODE((result == 0),
+			    "check_powerplay_tables failed", return result);
+
+	set_hw_cap(
+			hwmgr,
+			0 != (le32_to_cpu(powerplay_table->ulPlatformCaps) & ATOM_VEGA10_PP_PLATFORM_CAP_BACO),
+			PHM_PlatformCaps_BACO);
+	return result;
+}
+

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_processpptables.h

@@ -59,4 +59,5 @@ extern int vega10_get_number_of_powerplay_table_entries(struct pp_hwmgr *hwmgr);
 extern int vega10_get_powerplay_table_entry(struct pp_hwmgr *hwmgr, uint32_t entry_index,
 		struct pp_power_state *power_state, int (*call_back_func)(struct pp_hwmgr *, void *,
 				struct pp_power_state *, void *, uint32_t));
+extern int vega10_baco_set_cap(struct pp_hwmgr *hwmgr);
 #endif