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/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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));
};
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, int pgsz_idx,
struct nvgpu_vm_area **pvm_area);
#endif
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