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

Zhang, Jack (Jian) Jack.Zhang1 at amd.com
Mon Dec 2 11:06:58 UTC 2019

Hi, Team,

Would you please help to review this patch?


-----Original Message-----
From: Jack Zhang <Jack.Zhang1 at amd.com> 
Sent: Monday, December 2, 2019 7:05 PM
To: amd-gfx at lists.freedesktop.org
Cc: Zhang, Jack (Jian) <Jack.Zhang1 at amd.com>
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 at amd.com>
 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;
 		return false;

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