Re: [PATCH] amd/amdgpu/sriov swSMU disable for sriov

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Reviewed-by: Kevin Wang <kevin1.wang@xxxxxxx>
But it's better to optimize the flow of control in is_support_sw_smu() 

Best Regards,
Kevin



From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Jack Zhang <Jack.Zhang1@xxxxxxx>
Sent: Monday, December 2, 2019 7:05 PM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
Cc: Zhang, Jack (Jian) <Jack.Zhang1@xxxxxxx>
Subject: [PATCH] amd/amdgpu/sriov swSMU disable for sriov
 
For boards greater than ARCTURUS, and under sriov platform,
swSMU is not supported because smu ip block is commented at
guest driver.

Generally for sriov, initialization of smu is moved to host driver.
Thus, smu sw_init and hw_init will not be executed at guest driver.

Without sw structure being initialized in guest driver, swSMU cannot
declare to be supported.

Signed-off-by: Jack Zhang <Jack.Zhang1@xxxxxxx>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 36001a4..0b8a53b 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -531,7 +531,10 @@ bool is_support_sw_smu(struct amdgpu_device *adev)
         if (adev->asic_type == CHIP_VEGA20)
                 return (amdgpu_dpm == 2) ? true : false;
         else if (adev->asic_type >= CHIP_ARCTURUS)
-               return true;
+               if (amdgpu_sriov_vf(adev))
+                       return false;
+               else
+                       return true;
         else
                 return false;
 }
--
2.7.4

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