linux-kernel - [PATCH AUTOSEL 6.6 123/139] drm/amdgpu/gfx9: use rlc safe mode for soft recovery

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Message-ID: <20240925121137.1307574-123-sashal@kernel.org>
Date: Wed, 25 Sep 2024 08:09:03 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Alex Deucher <alexander.deucher@....com>,
	Vitaly Prosyak <vitaly.prosyak@....com>,
	Sasha Levin <sashal@...nel.org>,
	christian.koenig@....com,
	Xinhui.Pan@....com,
	airlied@...il.com,
	daniel@...ll.ch,
	sunil.khatri@....com,
	Prike.Liang@....com,
	liupeng01@...inos.cn,
	Tim.Huang@....com,
	kevinyang.wang@....com,
	pierre-eric.pelloux-prayer@....com,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.6 123/139] drm/amdgpu/gfx9: use rlc safe mode for soft recovery

From: Alex Deucher <alexander.deucher@....com>

[ Upstream commit 3ec2ad7c34c412bd9264cd1ff235d0812be90e82 ]

Protect the MMIO access with safe mode.

Acked-by: Vitaly Prosyak <vitaly.prosyak@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 00e693c47f3cc..895060f6948f3 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -5709,7 +5709,9 @@ static void gfx_v9_0_ring_soft_recovery(struct amdgpu_ring *ring, unsigned vmid)
 	value = REG_SET_FIELD(value, SQ_CMD, MODE, 0x01);
 	value = REG_SET_FIELD(value, SQ_CMD, CHECK_VMID, 1);
 	value = REG_SET_FIELD(value, SQ_CMD, VM_ID, vmid);
+	amdgpu_gfx_rlc_enter_safe_mode(adev, 0);
 	WREG32_SOC15(GC, 0, mmSQ_CMD, value);
+	amdgpu_gfx_rlc_exit_safe_mode(adev, 0);
 }
 
 static void gfx_v9_0_set_gfx_eop_interrupt_state(struct amdgpu_device *adev,
-- 
2.43.0