From 2d8e898e097cba408f7df9ba81cab9ba6ced4e4d Mon Sep 17 00:00:00 2001
From: Chunming Zhou <David1.Zhou@amd.com>
Date: Thu, 15 Dec 2016 11:15:27 +0800
Subject: [PATCH] drm/amdgpu/gmc9: set mc vm fb offset for raven
APU fb offset is set by sbios, which is different with DGPU.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c | 5 +++++
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.h | 2 +-
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 6 ++++--
3 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c
index 005075ff00f7..bd1976a03c09 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c
@@ -31,6 +31,11 @@
#include "soc15_common.h"
+u64 gfxhub_v1_0_get_mc_fb_offset(struct amdgpu_device *adev)
+{
+ return (u64)RREG32(SOC15_REG_OFFSET(GC, 0, mmMC_VM_FB_OFFSET)) << 24;
+}
+
int gfxhub_v1_0_gart_enable(struct amdgpu_device *adev)
{
u32 tmp;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.h b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.h
index 5129a8ff0932..154184891623 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.h
+++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.h
@@ -28,7 +28,7 @@ int gfxhub_v1_0_gart_enable(struct amdgpu_device *adev);
void gfxhub_v1_0_gart_disable(struct amdgpu_device *adev);
void gfxhub_v1_0_set_fault_enable_default(struct amdgpu_device *adev,
bool value);
-
+u64 gfxhub_v1_0_get_mc_fb_offset(struct amdgpu_device *adev);
extern const struct amd_ip_funcs gfxhub_v1_0_ip_funcs;
extern const struct amdgpu_ip_block_version gfxhub_v1_0_ip_block;
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 4166a1451db4..a29a31f5b012 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -548,8 +548,10 @@ static int gmc_v9_0_vm_init(struct amdgpu_device *adev)
amdgpu_vm_manager_init(adev);
/* base offset of vram pages */
- /*XXX This value is not zero for APU*/
- adev->vm_manager.vram_base_offset = 0;
+ if (adev->flags & AMD_IS_APU)
+ adev->vm_manager.vram_base_offset = gfxhub_v1_0_get_mc_fb_offset(adev);
+ else
+ adev->vm_manager.vram_base_offset = 0;
return 0;
}
--
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