From 6b034e25c86805d14259668a3ce6dc27c7509557 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Mon, 29 Jan 2018 16:03:50 +0100 Subject: [PATCH] drm/amdgpu: limit the VM address space with older VCE FW versions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Older VCE FW versions are buggy and can't work with 48bit address spaces. RFC: Should we limit the address space or just reject loading the older VCE firmware? Signed-off-by: Christian König Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 5 +++++ drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h | 2 ++ 2 files changed, 7 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index f828096114c3..e851c66cbb5e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -581,6 +581,11 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE; vm_size -= AMDGPU_VA_RESERVED_SIZE; + + /* Older VCE FW versions are buggy and can handle only 40bits */ + if (adev->vce.fw_version < AMDGPU_VCE_FW_53_45) + vm_size = min(vm_size, 1ULL << 40); + dev_info.virtual_address_offset = AMDGPU_VA_RESERVED_SIZE; dev_info.virtual_address_max = min(vm_size, AMDGPU_VA_HOLE_START); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h index 0fd378ae92c3..71781267ee4c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.h @@ -30,6 +30,8 @@ #define AMDGPU_VCE_HARVEST_VCE0 (1 << 0) #define AMDGPU_VCE_HARVEST_VCE1 (1 << 1) +#define AMDGPU_VCE_FW_53_45 ((53 << 24) | (45 << 16)) + struct amdgpu_vce { struct amdgpu_bo *vcpu_bo; uint64_t gpu_addr; -- GitLab