linux-kernel - [PATCH AUTOSEL 6.2 24/25] drm/amdgpu/gfx: set cg flags to enter/exit safe mode

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Message-Id: <20230401014126.3356410-24-sashal@kernel.org>
Date:   Fri, 31 Mar 2023 21:41:22 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Jane Jian <Jane.Jian@....com>, Lijo Lazar <lijo.lazar@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        Hawking.Zhang@....com, tim.huang@....com, yifan1.zhang@....com,
        Likun.Gao@....com, kenneth.feng@....com, evan.quan@....com,
        mario.limonciello@....com, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.2 24/25] drm/amdgpu/gfx: set cg flags to enter/exit safe mode

From: Jane Jian <Jane.Jian@....com>

[ Upstream commit e06bfcc1a1c41bcb8c31470d437e147ce9f0acfd ]

sriov needs to enter/exit safe mode in update umd p state
add the cg flag to let it enter or exit while needed

Signed-off-by: Jane Jian <Jane.Jian@....com>
Reviewed-by: Lijo Lazar <lijo.lazar@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index c748d92cec8e7..ddb7b8651ab4c 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -1315,6 +1315,11 @@ static int gfx_v11_0_sw_init(void *handle)
 		break;
 	}
 
+	/* Enable CG flag in one VF mode for enabling RLC safe mode enter/exit */
+	if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(11, 0, 3) &&
+		amdgpu_sriov_is_pp_one_vf(adev))
+		adev->cg_flags = AMD_CG_SUPPORT_GFX_CGCG;
+
 	/* EOP Event */
 	r = amdgpu_irq_add_id(adev, SOC21_IH_CLIENTID_GRBM_CP,
 			      GFX_11_0_0__SRCID__CP_EOP_INTERRUPT,
-- 
2.39.2