[AMD Official Use Only - General]
Reviewed-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Regards,
Hawking
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Jack Xiao
Sent: Thursday, November 17, 2022 17:11
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Zhang, Hawking <Hawking.Zhang@xxxxxxx>; Koenig, Christian <Christian.Koenig@xxxxxxx>; Pan, Xinhui <Xinhui.Pan@xxxxxxx>; Sider, Graham <Graham.Sider@xxxxxxx>
Cc: Xiao, Jack <Jack.Xiao@xxxxxxx>
Subject: [PATCH] drm/amd/amdgpu: reserve vm invalidation engine for firmware
If mes enabled, reserve VM invalidation engine 5 for firmware.
Signed-off-by: Jack Xiao <Jack.Xiao@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index 4365ede42855..e970e3760cec 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -479,6 +479,12 @@ int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev)
unsigned i;
unsigned vmhub, inv_eng;
+ if (adev->enable_mes) {
+ /* reserve engine 5 for firmware */
+ for (vmhub = 0; vmhub < AMDGPU_MAX_VMHUBS; vmhub++)
+ vm_inv_engs[vmhub] &= ~(1 << 5);
+ }
+
for (i = 0; i < adev->num_rings; ++i) {
ring = adev->rings[i];
vmhub = ring->funcs->vmhub;
--
2.37.3
