[PATCH] drm/amdgpu/sriov move program of sq_config to PF

[Deucher, Alexander]

[AMD Public Use]

Acked-by: Alex Deucher <alexander.deucher at amd.com>
________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Jack Zhang <Jack.Zhang1 at amd.com>
Sent: Wednesday, April 8, 2020 6:33 AM
To: amd-gfx at lists.freedesktop.org <amd-gfx at lists.freedesktop.org>
Cc: Zhang, Jack (Jian) <Jack.Zhang1 at amd.com>
Subject: [PATCH] drm/amdgpu/sriov move program of sq_config to PF

Since SQ_CONFIG will influence performance behavior, it's
unsafe to program in VF. Therefore, program of SQ_CONFIG
need to be moved to PF under siov. Skip it here in guest driver.

Signed-off-by: Jack Zhang <Jack.Zhang1 at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 2d56b067..9bb89f2 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2575,7 +2575,8 @@ static void gfx_v9_0_constants_init(struct amdgpu_device *adev)

         gfx_v9_0_init_compute_vmid(adev);
         gfx_v9_0_init_gds_vmid(adev);
-       gfx_v9_0_init_sq_config(adev);
+       if (!amdgpu_sriov_vf(adev))
+               gfx_v9_0_init_sq_config(adev);
 }

 static void gfx_v9_0_wait_for_rlc_serdes(struct amdgpu_device *adev)
--
2.7.4

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