[PATCH 10/11] drm/amdgpu: Rework pcie_bif ras sw_init

[Hawking Zhang]

pcie_bif ras blocks needs to be initialized as early
as possible to handle fatal error detected in hw_init
phase. also align the pcie_bif ras sw_init with other
ras blocks

Signed-off-by: Hawking Zhang <Hawking.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.c | 23 +++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h |  1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c  | 16 ++++++++++++----
 3 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.c
index 37d779b8e4a6..a3bc00577a7c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.c
@@ -22,6 +22,29 @@
 #include "amdgpu.h"
 #include "amdgpu_ras.h"
 
+int amdgpu_nbio_ras_sw_init(struct amdgpu_device *adev)
+{
+	int err;
+	struct amdgpu_nbio_ras *ras;
+
+	if (!adev->nbio.ras)
+		return 0;
+
+	ras = adev->nbio.ras;
+	err = amdgpu_ras_register_ras_block(adev, &ras->ras_block);
+	if (err) {
+		dev_err(adev->dev, "Failed to register pcie_bif ras block!\n");
+		return err;
+	}
+
+	strcpy(ras->ras_block.ras_comm.name, "pcie_bif");
+	ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__PCIE_BIF;
+	ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
+	adev->nbio.ras_if = &ras->ras_block.ras_comm;
+
+	return 0;
+}
+
 int amdgpu_nbio_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block)
 {
 	int r;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
index a240336bbc6b..c686ff4bcc39 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
@@ -106,5 +106,6 @@ struct amdgpu_nbio {
 	struct amdgpu_nbio_ras  *ras;
 };
 
+int amdgpu_nbio_ras_sw_init(struct amdgpu_device *adev);
 int amdgpu_nbio_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block);
 #endif
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index 63dfcc98152d..f42480b8a8d3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -2558,17 +2558,25 @@ int amdgpu_ras_init(struct amdgpu_device *adev)
 	case CHIP_VEGA20:
 	case CHIP_ARCTURUS:
 	case CHIP_ALDEBARAN:
-		if (!adev->gmc.xgmi.connected_to_cpu) {
+		if (!adev->gmc.xgmi.connected_to_cpu)
 			adev->nbio.ras = &nbio_v7_4_ras;
-			amdgpu_ras_register_ras_block(adev, &adev->nbio.ras->ras_block);
-			adev->nbio.ras_if = &adev->nbio.ras->ras_block.ras_comm;
-		}
 		break;
 	default:
 		/* nbio ras is not available */
 		break;
 	}
 
+	/* nbio ras block needs to be enabled ahead of other ras blocks
+	 * to handle fatal error */
+	if (!adev->gmc.xgmi.connected_to_cpu &&
+	    amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__PCIE_BIF)) {
+		r = amdgpu_nbio_ras_sw_init(adev);
+		if (r) {
+			dev_err(adev->dev, "Failed to initialize pcie_bif ras block!\n");
+			return r;
+		}
+	}
+
 	if (adev->nbio.ras &&
 	    adev->nbio.ras->init_ras_controller_interrupt) {
 		r = adev->nbio.ras->init_ras_controller_interrupt(adev);
-- 
2.17.1