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/*
* Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
*
* 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 AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#ifndef NVGPU_VM_AREA_H
#define NVGPU_VM_AREA_H
#include <nvgpu/list.h>
#include <nvgpu/types.h>
struct vm_gk20a;
struct gk20a_as_share;
struct nvgpu_as_alloc_space_args;
struct nvgpu_as_free_space_args;
struct nvgpu_vm_area {
/*
* Entry into the list of VM areas owned by a VM.
*/
struct nvgpu_list_node vm_area_list;
/*
* List of buffers mapped into this vm_area.
*/
struct nvgpu_list_node buffer_list_head;
u32 flags;
u32 pgsz_idx;
u64 addr;
u64 size;
bool sparse;
};
static inline struct nvgpu_vm_area *
nvgpu_vm_area_from_vm_area_list(struct nvgpu_list_node *node)
{
return (struct nvgpu_vm_area *)
((uintptr_t)node - offsetof(struct nvgpu_vm_area,
vm_area_list));
};
/*
* Alloc space flags.
*/
#define NVGPU_VM_AREA_ALLOC_FIXED_OFFSET BIT(0)
#define NVGPU_VM_AREA_ALLOC_SPARSE BIT(1)
int nvgpu_vm_area_alloc(struct vm_gk20a *vm, u32 pages, u32 page_size,
u64 *addr, u32 flags);
int nvgpu_vm_area_free(struct vm_gk20a *vm, u64 addr);
struct nvgpu_vm_area *nvgpu_vm_area_find(struct vm_gk20a *vm, u64 addr);
int nvgpu_vm_area_validate_buffer(struct vm_gk20a *vm,
u64 map_offset, u64 map_size, u32 pgsz_idx,
struct nvgpu_vm_area **pvm_area);
#endif /* NVGPU_VM_AREA_H */
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