/* * Copyright 2016 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE.  * * Author: Monk.liu@amd.com */ #include <drm/drm_exec.h> #include "amdgpu.h" uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev){	uint64_t addr = AMDGPU_VA_RESERVED_CSA_START(adev); 	addr = amdgpu_gmc_sign_extend(addr); 	return addr;} int amdgpu_allocate_static_csa(struct amdgpu_device *adev, struct amdgpu_bo **bo,				u32 domain, uint32_t size){	void *ptr; 	amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,				domain, bo,				NULL, &ptr);	if (!*bo)		return -ENOMEM; 	memset(ptr, 0, size);	adev->virt.csa_cpu_addr = ptr;	return 0;} void amdgpu_free_static_csa(struct amdgpu_bo **bo){	amdgpu_bo_free_kernel(bo, NULL, NULL);} /* * amdgpu_map_static_csa should be called during amdgpu_vm_init * it maps virtual address amdgpu_csa_vaddr() to this VM, and each command * submission of GFX should use this virtual address within META_DATA init * package to support SRIOV gfx preemption. */int amdgpu_map_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,			  struct amdgpu_bo *bo, struct amdgpu_bo_va **bo_va,			  uint64_t csa_addr, uint32_t size){	struct drm_exec exec;	int r; 	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);	drm_exec_until_all_locked(&exec) {		r = amdgpu_vm_lock_pd(vm, &exec, 0);		if (likely(!r))			r = drm_exec_lock_obj(&exec, &bo->tbo.base);		drm_exec_retry_on_contention(&exec);		if (unlikely(r)) {			DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);			goto error;		}	} 	*bo_va = amdgpu_vm_bo_add(adev, vm, bo);	if (!*bo_va) {		r = -ENOMEM;		goto error;	} 	r = amdgpu_vm_bo_map(adev, *bo_va, csa_addr, 0, size,			     AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE |			     AMDGPU_PTE_EXECUTABLE); 	if (r) {		DRM_ERROR("failed to do bo_map on static CSA, err=%d\n", r);		amdgpu_vm_bo_del(adev, *bo_va);		goto error;	} error:	drm_exec_fini(&exec);	return r;} int amdgpu_unmap_static_csa(struct amdgpu_device *adev, struct amdgpu_vm *vm,			    struct amdgpu_bo *bo, struct amdgpu_bo_va *bo_va,			    uint64_t csa_addr){	struct drm_exec exec;	int r; 	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0);	drm_exec_until_all_locked(&exec) {		r = amdgpu_vm_lock_pd(vm, &exec, 0);		if (likely(!r))			r = drm_exec_lock_obj(&exec, &bo->tbo.base);		drm_exec_retry_on_contention(&exec);		if (unlikely(r)) {			DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);			goto error;		}	} 	r = amdgpu_vm_bo_unmap(adev, bo_va, csa_addr);	if (r) {		DRM_ERROR("failed to do bo_unmap on static CSA, err=%d\n", r);		goto error;	} 	amdgpu_vm_bo_del(adev, bo_va); error:	drm_exec_fini(&exec);	return r;}