linux-kernel - [PATCH AUTOSEL 6.5 30/41] drm/amdgpu/nbio4.3: set proper rmmio_remap.reg

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Message-Id: <20230924131529.1275335-30-sashal@kernel.org>
Date:   Sun, 24 Sep 2023 09:15:18 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Alex Deucher <alexander.deucher@....com>,
        Timmy Tsai <timmtsai@....com>, Sasha Levin <sashal@...nel.org>,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...il.com,
        daniel@...ll.ch, mario.limonciello@....com, candice.li@....com,
        Hawking.Zhang@....com, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.5 30/41] drm/amdgpu/nbio4.3: set proper rmmio_remap.reg_offset for SR-IOV

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

[ Upstream commit ab43213e7afd08ac68d4282060bacf309e70fd14 ]

Needed for HDP flush to work correctly.

Reviewed-by: Timmy Tsai <timmtsai@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c
index d5ed9e0e1a5f1..e5b5b0f4940f4 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c
@@ -345,6 +345,9 @@ static void nbio_v4_3_init_registers(struct amdgpu_device *adev)
 		data &= ~RCC_DEV0_EPF2_STRAP2__STRAP_NO_SOFT_RESET_DEV0_F2_MASK;
 		WREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF2_STRAP2, data);
 	}
+	if (amdgpu_sriov_vf(adev))
+		adev->rmmio_remap.reg_offset = SOC15_REG_OFFSET(NBIO, 0,
+			regBIF_BX_DEV0_EPF0_VF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
 }
 
 static u32 nbio_v4_3_get_rom_offset(struct amdgpu_device *adev)
-- 
2.40.1