From 904cd3891dd390b109c8146974b47fca78b97c98 Mon Sep 17 00:00:00 2001 From: Xiangliang Yu Date: Fri, 21 Apr 2017 15:40:25 +0800 Subject: [PATCH] drm/amdgpu/virt: add two functions for MM table Add two functions to allocate & free MM table memory. Signed-off-by: Xiangliang Yu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 46 ++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 2 ++ 2 files changed, 48 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c index ba8b8ae6234f..6bf5cea294f2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c @@ -225,3 +225,49 @@ int amdgpu_virt_reset_gpu(struct amdgpu_device *adev) return 0; } + +/** + * amdgpu_virt_alloc_mm_table() - alloc memory for mm table + * @amdgpu: amdgpu device. + * MM table is used by UVD and VCE for its initialization + * Return: Zero if allocate success. + */ +int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev) +{ + int r; + + if (!amdgpu_sriov_vf(adev) || adev->virt.mm_table.gpu_addr) + return 0; + + r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE, + AMDGPU_GEM_DOMAIN_VRAM, + &adev->virt.mm_table.bo, + &adev->virt.mm_table.gpu_addr, + (void *)&adev->virt.mm_table.cpu_addr); + if (r) { + DRM_ERROR("failed to alloc mm table and error = %d.\n", r); + return r; + } + + memset((void *)adev->virt.mm_table.cpu_addr, 0, PAGE_SIZE); + DRM_INFO("MM table gpu addr = 0x%llx, cpu addr = %p.\n", + adev->virt.mm_table.gpu_addr, + adev->virt.mm_table.cpu_addr); + return 0; +} + +/** + * amdgpu_virt_free_mm_table() - free mm table memory + * @amdgpu: amdgpu device. + * Free MM table memory + */ +void amdgpu_virt_free_mm_table(struct amdgpu_device *adev) +{ + if (!amdgpu_sriov_vf(adev) || !adev->virt.mm_table.gpu_addr) + return; + + amdgpu_bo_free_kernel(&adev->virt.mm_table.bo, + &adev->virt.mm_table.gpu_addr, + (void *)&adev->virt.mm_table.cpu_addr); + adev->virt.mm_table.gpu_addr = 0; +} diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h index 1ee0a190b33b..a8ed162cc0bc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h @@ -98,5 +98,7 @@ int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init); int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init); int amdgpu_virt_reset_gpu(struct amdgpu_device *adev); int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, bool voluntary); +int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev); +void amdgpu_virt_free_mm_table(struct amdgpu_device *adev); #endif -- 2.20.1