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From 8e058122fadb9869c62e532d10fc37e6a36168c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Mon, 27 Aug 2018 18:23:11 +0200
Subject: [PATCH 0308/2940] drm/amdgpu: enable AGP aperture for GMC9 v2
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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>
---
drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c | 10 +++++-----
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 2 ++
drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c | 10 +++++-----
3 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c
index 3403ded39d13..ffd0ec9586d1 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfxhub_v1_0.c
@@ -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
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 1a9f95530b1a..fda8ccb19654 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -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);
}
diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
index 63fec50e2db0..21a822ffea2b 100644
--- a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
@@ -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 +
--
2.17.1
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