[PATCH] Partially revert "drm/amd/amdgpu: add pipe1 hardware support"

[Alex Deucher]

This partially reverts commit b7a1a0ef12b81957584fef7b61e2d5ec049c7209.

A user reported stuttering under heavy gfx load with this commit.
I suspect it's due to the fact that the gfx contexts are shared
between the pipes so if there is alot of load on one pipe, we could
end up stalling waiting for a context.

That said, having both pipes is useful in some contexts and
this patch was actually enabled mainly to support some SR-IOV
use cases, so leave it enabled for SR-IOV.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3519
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Cc: ZhenGuo Yin <zhenguo.yin at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 9484f3b5a9b7b..727cb753e58f5 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -4722,7 +4722,10 @@ static int gfx_v10_0_sw_init(struct amdgpu_ip_block *ip_block)
 	case IP_VERSION(10, 3, 3):
 	case IP_VERSION(10, 3, 7):
 		adev->gfx.me.num_me = 1;
-		adev->gfx.me.num_pipe_per_me = 2;
+		if (amdgpu_sriov_vf(adev))
+			adev->gfx.me.num_pipe_per_me = 2;
+		else
+			adev->gfx.me.num_pipe_per_me = 1;
 		adev->gfx.me.num_queue_per_pipe = 1;
 		adev->gfx.mec.num_mec = 2;
 		adev->gfx.mec.num_pipe_per_mec = 4;
-- 
2.47.1