From: Shaoyun Liu <Shaoyun.Liu@amd.com>
Date: Fri, 28 Apr 2017 20:14:59 +0000 (-0400)
Subject: drm/amdgpu: Reserve 0-2 invalidation reg sets for none-amdgpu usages
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=43b9176faae1543d1a190db8eb098a8284d364f3;p=linux.git

drm/amdgpu: Reserve 0-2 invalidation reg sets for none-amdgpu usages

Firmware used reg set 2 for tlb invalidation. AMDGPU can start from reg
set 3 to avoid the conflict. AMDKFD will use the reg set 0 or 1 when
necesary.

Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Reviewws-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index e5d4dfeae3fe9..dc1e1c1d6b243 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -386,7 +386,7 @@ static int gmc_v9_0_early_init(void *handle)
 static int gmc_v9_0_late_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
-	unsigned vm_inv_eng[AMDGPU_MAX_VMHUBS] = { 0 };
+	unsigned vm_inv_eng[AMDGPU_MAX_VMHUBS] = { 3, 3 };
 	unsigned i;
 
 	for(i = 0; i < adev->num_rings; ++i) {