drm/amdgpu: fix the gart table cleared issue for S3

Something writes over the first 8 MB so reserve this
on vega10 until we root cause it.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 96cbe02..ef34ff2 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -607,6 +607,7 @@ struct amdgpu_mc {
        uint32_t                srbm_soft_reset;
        struct amdgpu_mode_mc_save save;
        bool                    prt_warning;
+       uint64_t                stolen_size;
        /* apertures */
        u64                                     shared_aperture_start;
        u64                                     shared_aperture_end;

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 8526a02..2ba54e2 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1121,7 +1121,7 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
        /* Change the size here instead of the init above so only lpfn is affected */
        amdgpu_ttm_set_active_vram_size(adev, adev->mc.visible_vram_size);
 
-       r = amdgpu_bo_create(adev, 256 * 1024, PAGE_SIZE, true,
+       r = amdgpu_bo_create(adev, adev->mc.stolen_size, PAGE_SIZE, true,
                             AMDGPU_GEM_DOMAIN_VRAM,
                             AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
                             AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
index 569828c..a33ba60 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -834,6 +834,8 @@ static int gmc_v6_0_sw_init(void *handle)
 
        adev->mc.mc_mask = 0xffffffffffULL;
 
+       adev->mc.stolen_size = 256 * 1024;
+
        adev->need_dma32 = false;
        dma_bits = adev->need_dma32 ? 32 : 40;
        r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits));

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
index 8b39d9a..1326c1f 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
@@ -970,6 +970,8 @@ static int gmc_v7_0_sw_init(void *handle)
         */
        adev->mc.mc_mask = 0xffffffffffULL; /* 40 bit MC */
 
+       adev->mc.stolen_size = 256 * 1024;
+
        /* set DMA mask + need_dma32 flags.
         * PCIE - can handle 40-bits.
         * IGP - can handle 40-bits

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 73a9653..42e5b55 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -1054,6 +1054,8 @@ static int gmc_v8_0_sw_init(void *handle)
         */
        adev->mc.mc_mask = 0xffffffffffULL; /* 40 bit MC */
 
+       adev->mc.stolen_size = 256 * 1024;
+
        /* set DMA mask + need_dma32 flags.
         * PCIE - can handle 40-bits.
         * IGP - can handle 40-bits

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 4ab8338..6b1fb7d 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -572,6 +572,12 @@ static int gmc_v9_0_sw_init(void *handle)
         */
        adev->mc.mc_mask = 0xffffffffffffULL; /* 48 bit MC */
 
+       /*
+        * It needs to reserve 8M stolen memory for vega10
+        * TODO: Figure out how to avoid that...
+        */
+       adev->mc.stolen_size = 8 * 1024 * 1024;
+
        /* set DMA mask + need_dma32 flags.
         * PCIE - can handle 44-bits.
         * IGP - can handle 44-bits