From 3677fa0c8698c6d9753fa9a73b4b308eb2976908 Mon Sep 17 00:00:00 2001
From: Mohammad Zafar Ziya <Mohammadzafar.ziya@amd.com>
Date: Wed, 23 Mar 2022 12:10:00 +0800
Subject: drm/amdgpu/jpeg: Add jpeg ras error query support
Git-commit: 749831acb1f6bf5837aeeec93b96da1d91534775
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

RAS error query support addition for JPEG 2.6

V2: removed unused options and corrected comment format.
Moved register definition to header file.

V3: poison query status check added.
Removed the error query support

V4: Return statement refactored.

Signed-off-by: Mohammad Zafar Ziya <Mohammadzafar.ziya@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c | 74 ++++++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.h |  7 +++
 2 files changed, 81 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c b/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c
index a29c86617fb5..8c3227d0b8b4 100644
--- a/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c
+++ b/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c
@@ -26,6 +26,7 @@
 #include "soc15.h"
 #include "soc15d.h"
 #include "jpeg_v2_0.h"
+#include "jpeg_v2_5.h"
 
 #include "vcn/vcn_2_5_offset.h"
 #include "vcn/vcn_2_5_sh_mask.h"
@@ -39,6 +40,7 @@ static void jpeg_v2_5_set_dec_ring_funcs(struct amdgpu_device *adev);
 static void jpeg_v2_5_set_irq_funcs(struct amdgpu_device *adev);
 static int jpeg_v2_5_set_powergating_state(void *handle,
 				enum amd_powergating_state state);
+static void jpeg_v2_5_set_ras_funcs(struct amdgpu_device *adev);
 
 static int amdgpu_ih_clientid_jpeg[] = {
 	SOC15_IH_CLIENTID_VCN,
@@ -70,6 +72,7 @@ static int jpeg_v2_5_early_init(void *handle)
 
 	jpeg_v2_5_set_dec_ring_funcs(adev);
 	jpeg_v2_5_set_irq_funcs(adev);
+	jpeg_v2_5_set_ras_funcs(adev);
 
 	return 0;
 }
@@ -730,3 +733,74 @@ const struct amdgpu_ip_block_version jpeg_v2_6_ip_block =
 		.rev = 0,
 		.funcs = &jpeg_v2_6_ip_funcs,
 };
+
+static uint32_t jpeg_v2_6_query_poison_by_instance(struct amdgpu_device *adev,
+		uint32_t instance, uint32_t sub_block)
+{
+	uint32_t poison_stat = 0, reg_value = 0;
+
+	switch (sub_block) {
+	case AMDGPU_JPEG_V2_6_JPEG0:
+		reg_value = RREG32_SOC15(JPEG, instance, mmUVD_RAS_JPEG0_STATUS);
+		poison_stat = REG_GET_FIELD(reg_value, UVD_RAS_JPEG0_STATUS, POISONED_PF);
+		break;
+	case AMDGPU_JPEG_V2_6_JPEG1:
+		reg_value = RREG32_SOC15(JPEG, instance, mmUVD_RAS_JPEG1_STATUS);
+		poison_stat = REG_GET_FIELD(reg_value, UVD_RAS_JPEG1_STATUS, POISONED_PF);
+		break;
+	default:
+		break;
+	}
+
+	if (poison_stat)
+		dev_info(adev->dev, "Poison detected in JPEG%d sub_block%d\n",
+			instance, sub_block);
+
+	return poison_stat;
+}
+
+static bool jpeg_v2_6_query_ras_poison_status(struct amdgpu_device *adev)
+{
+	uint32_t inst = 0, sub = 0, poison_stat = 0;
+
+	for (inst = 0; inst < adev->jpeg.num_jpeg_inst; inst++)
+		for (sub = 0; sub < AMDGPU_JPEG_V2_6_MAX_SUB_BLOCK; sub++)
+			poison_stat +=
+			jpeg_v2_6_query_poison_by_instance(adev, inst, sub);
+
+	return !!poison_stat;
+}
+
+const struct amdgpu_ras_block_hw_ops jpeg_v2_6_ras_hw_ops = {
+	.query_poison_status = jpeg_v2_6_query_ras_poison_status,
+};
+
+static struct amdgpu_jpeg_ras jpeg_v2_6_ras = {
+	.ras_block = {
+		.hw_ops = &jpeg_v2_6_ras_hw_ops,
+	},
+};
+
+static void jpeg_v2_5_set_ras_funcs(struct amdgpu_device *adev)
+{
+	switch (adev->ip_versions[JPEG_HWIP][0]) {
+	case IP_VERSION(2, 6, 0):
+		adev->jpeg.ras = &jpeg_v2_6_ras;
+		break;
+	default:
+		break;
+	}
+
+	if (adev->jpeg.ras) {
+		amdgpu_ras_register_ras_block(adev, &adev->jpeg.ras->ras_block);
+
+		strcpy(adev->jpeg.ras->ras_block.ras_comm.name, "jpeg");
+		adev->jpeg.ras->ras_block.ras_comm.block = AMDGPU_RAS_BLOCK__JPEG;
+		adev->jpeg.ras->ras_block.ras_comm.type = AMDGPU_RAS_ERROR__POISON;
+		adev->jpeg.ras_if = &adev->jpeg.ras->ras_block.ras_comm;
+
+		/* If don't define special ras_late_init function, use default ras_late_init */
+		if (!adev->jpeg.ras->ras_block.ras_late_init)
+			adev->jpeg.ras->ras_block.ras_late_init = amdgpu_ras_block_late_init;
+	}
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.h b/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.h
index 3b0aa29b9879..1e858c6cdf13 100644
--- a/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.h
+++ b/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.h
@@ -24,6 +24,13 @@
 #ifndef __JPEG_V2_5_H__
 #define __JPEG_V2_5_H__
 
+enum amdgpu_jpeg_v2_6_sub_block {
+	AMDGPU_JPEG_V2_6_JPEG0 = 0,
+	AMDGPU_JPEG_V2_6_JPEG1,
+
+	AMDGPU_JPEG_V2_6_MAX_SUB_BLOCK,
+};
+
 extern const struct amdgpu_ip_block_version jpeg_v2_5_ip_block;
 extern const struct amdgpu_ip_block_version jpeg_v2_6_ip_block;
 
-- 
2.38.1