drm/amdgpu: Move mmhub ras block init to ras sw_init

Initialize mmhub ras block only when mmhub ip block
supports ras features. Driver queries ras capabilities
after early_init, ras block init needs to be moved to
sw_init.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Stanley Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -54,7 +54,7 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \
 	amdgpu_ucode.o amdgpu_bo_list.o amdgpu_ctx.o amdgpu_sync.o \
 	amdgpu_gtt_mgr.o amdgpu_preempt_mgr.o amdgpu_vram_mgr.o amdgpu_virt.o \
 	amdgpu_atomfirmware.o amdgpu_vf_error.o amdgpu_sched.o \
-	amdgpu_debugfs.o amdgpu_ids.o amdgpu_gmc.o \
+	amdgpu_debugfs.o amdgpu_ids.o amdgpu_gmc.o amdgpu_mmhub.o \
 	amdgpu_xgmi.o amdgpu_csa.o amdgpu_ras.o amdgpu_vm_cpu.o \
 	amdgpu_vm_sdma.o amdgpu_discovery.o amdgpu_ras_eeprom.o amdgpu_nbio.o \
 	amdgpu_umc.o smu_v11_0_i2c.o amdgpu_fru_eeprom.o amdgpu_rap.o \

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

@@ -456,6 +456,11 @@ int amdgpu_gmc_ras_sw_init(struct amdgpu_device *adev)
 	if (r)
 		return r;
 
+	/* mmhub ras block */
+	r = amdgpu_mmhub_ras_sw_init(adev);
+	if (r)
+		return r;
+
 	if (!adev->gmc.xgmi.connected_to_cpu) {
 		adev->gmc.xgmi.ras = &xgmi_ras;
 		amdgpu_ras_register_ras_block(adev, &adev->gmc.xgmi.ras->ras_block);

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

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2023  Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "amdgpu.h"
+#include "amdgpu_ras.h"
+
+int amdgpu_mmhub_ras_sw_init(struct amdgpu_device *adev)
+{
+	int err;
+	struct amdgpu_mmhub_ras *ras;
+
+	if (!adev->mmhub.ras)
+		return 0;
+
+	ras = adev->mmhub.ras;
+	err = amdgpu_ras_register_ras_block(adev, &ras->ras_block);
+	if (err) {
+		dev_err(adev->dev, "Failed to register mmhub ras block!\n");
+		return err;
+	}
+
+	strcpy(ras->ras_block.ras_comm.name, "mmhub");
+	ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__MMHUB;
+	ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
+	adev->mmhub.ras_if = &ras->ras_block.ras_comm;
+
+	/* mmhub ras follows amdgpu_ras_block_late_init_default for late init */
+	return 0;
+}

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

@@ -48,5 +48,7 @@ struct amdgpu_mmhub {
 	struct amdgpu_mmhub_ras  *ras;
 };
 
+int amdgpu_mmhub_ras_sw_init(struct amdgpu_device *adev);
+
 #endif
 

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -1351,15 +1351,6 @@ static void gmc_v9_0_set_mmhub_ras_funcs(struct amdgpu_device *adev)
 		/* mmhub ras is not available */
 		break;
 	}
-
-	if (adev->mmhub.ras) {
-		amdgpu_ras_register_ras_block(adev, &adev->mmhub.ras->ras_block);
-
-		strcpy(adev->mmhub.ras->ras_block.ras_comm.name, "mmhub");
-		adev->mmhub.ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__MMHUB;
-		adev->mmhub.ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
-		adev->mmhub.ras_if = &adev->mmhub.ras->ras_block.ras_comm;
-	}
 }
 
 static void gmc_v9_0_set_gfxhub_funcs(struct amdgpu_device *adev)