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drm/amdgpu: enable AGP aperture for GMC9 v2 

Enable the old AGP aperture to avoid GART mappings.

v2: don't enable it for SRIOV

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-08-27 18:23:11 +02:00 committed by Alex Deucher
parent 03a1c08d00
commit c3e1b43c2c
3 changed files with 12 additions and 10 deletions
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10
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c
View File

@ -65,16 +65,16 @@ static void gfxhub_v1_0_init_system_aperture_regs(struct amdgpu_device *adev)
{
uint64_t value;
/* Disable AGP. */
/* Program the AGP BAR */
WREG32_SOC15(GC, 0, mmMC_VM_AGP_BASE, 0);
WREG32_SOC15(GC, 0, mmMC_VM_AGP_TOP, 0);
WREG32_SOC15(GC, 0, mmMC_VM_AGP_BOT, 0xFFFFFFFF);
WREG32_SOC15(GC, 0, mmMC_VM_AGP_BOT, adev->gmc.agp_start >> 24);
WREG32_SOC15(GC, 0, mmMC_VM_AGP_TOP, adev->gmc.agp_end >> 24);
/* Program the system aperture low logical page number. */
WREG32_SOC15(GC, 0, mmMC_VM_SYSTEM_APERTURE_LOW_ADDR,
adev->gmc.vram_start >> 18);
min(adev->gmc.vram_start, adev->gmc.agp_start) >> 18);
WREG32_SOC15(GC, 0, mmMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
adev->gmc.vram_end >> 18);
max(adev->gmc.vram_end, adev->gmc.agp_end) >> 18);
/* Set default page address. */
value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start

2
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
View File

@ -772,6 +772,8 @@ static void gmc_v9_0_vram_gtt_location(struct amdgpu_device *adev,
base = mmhub_v1_0_get_fb_location(adev);
amdgpu_gmc_vram_location(adev, &adev->gmc, base);
amdgpu_gmc_gart_location(adev, mc);
if (!amdgpu_sriov_vf(adev))
amdgpu_gmc_agp_location(adev, mc);
/* base offset of vram pages */
adev->vm_manager.vram_base_offset = gfxhub_v1_0_get_mc_fb_offset(adev);
}

10
drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
View File

@ -76,16 +76,16 @@ static void mmhub_v1_0_init_system_aperture_regs(struct amdgpu_device *adev)
uint64_t value;
uint32_t tmp;
/* Disable AGP. */
/* Program the AGP BAR */
WREG32_SOC15(MMHUB, 0, mmMC_VM_AGP_BASE, 0);
WREG32_SOC15(MMHUB, 0, mmMC_VM_AGP_TOP, 0);
WREG32_SOC15(MMHUB, 0, mmMC_VM_AGP_BOT, 0x00FFFFFF);
WREG32_SOC15(MMHUB, 0, mmMC_VM_AGP_BOT, adev->gmc.agp_start >> 24);
WREG32_SOC15(MMHUB, 0, mmMC_VM_AGP_TOP, adev->gmc.agp_end >> 24);
/* Program the system aperture low logical page number. */
WREG32_SOC15(MMHUB, 0, mmMC_VM_SYSTEM_APERTURE_LOW_ADDR,
adev->gmc.vram_start >> 18);
min(adev->gmc.vram_start, adev->gmc.agp_start) >> 18);
WREG32_SOC15(MMHUB, 0, mmMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
adev->gmc.vram_end >> 18);
max(adev->gmc.vram_end, adev->gmc.agp_end) >> 18);
/* Set default page address. */
value = adev->vram_scratch.gpu_addr - adev->gmc.vram_start +