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/*
* 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 "amdgpu.h"
uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
{
uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
addr -= AMDGPU_VA_RESERVED_SIZE;
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)
{
int r;
void *ptr;
r = 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 ww_acquire_ctx ticket;
struct list_head list;
struct amdgpu_bo_list_entry pd;
struct ttm_validate_buffer csa_tv;
int r;
INIT_LIST_HEAD(&list);
INIT_LIST_HEAD(&csa_tv.head);
csa_tv.bo = &bo->tbo;
csa_tv.num_shared = 1;
list_add(&csa_tv.head, &list);
amdgpu_vm_get_pd_bo(vm, &list, &pd);
r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL);
if (r) {
DRM_ERROR("failed to reserve CSA,PD BOs: err=%d\n", r);
return r;
}
*bo_va = amdgpu_vm_bo_add(adev, vm, bo);
if (!*bo_va) {
ttm_eu_backoff_reservation(&ticket, &list);
DRM_ERROR("failed to create bo_va for static CSA\n");
return -ENOMEM;
}
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_rmv(adev, *bo_va);
ttm_eu_backoff_reservation(&ticket, &list);
return r;
}
ttm_eu_backoff_reservation(&ticket, &list);
return 0;
}
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