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git://nv-tegra.nvidia.com/linux-nvgpu.git
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35ae4194a0
Add a translation layer to convert from the NVGPU_AS_* flags to to new set of NVGPU_VM_MAP_* and NVGPU_VM_AREA_ALLOC_* flags. This allows the common MM code to not depend on the UAPI header defined for Linux. In addition to this change a couple of other small changes were made: 1. Deprecate, print a warning, and ignore usage of the NVGPU_AS_MAP_BUFFER_FLAGS_MAPPABLE_COMPBITS flag. 2. Move the t19x IO coherence flag from the t19x UAPI header to the regular UAPI header. JIRA NVGPU-293 Change-Id: I146402b0e8617294374e63e78f8826c57cd3b291 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1599802 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/*
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* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __NVGPU_VM_AREA_H__
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#define __NVGPU_VM_AREA_H__
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#include <nvgpu/list.h>
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#include <nvgpu/types.h>
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struct vm_gk20a;
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struct gk20a_as_share;
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struct nvgpu_as_alloc_space_args;
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struct nvgpu_as_free_space_args;
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struct nvgpu_vm_area {
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/*
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* Entry into the list of VM areas owned by a VM.
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*/
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struct nvgpu_list_node vm_area_list;
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/*
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* List of buffers mapped into this vm_area.
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*/
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struct nvgpu_list_node buffer_list_head;
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u32 flags;
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u32 pgsz_idx;
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u64 addr;
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u64 size;
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bool sparse;
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};
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static inline struct nvgpu_vm_area *
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nvgpu_vm_area_from_vm_area_list(struct nvgpu_list_node *node)
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{
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return (struct nvgpu_vm_area *)
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((uintptr_t)node - offsetof(struct nvgpu_vm_area,
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vm_area_list));
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};
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/*
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* Alloc space flags.
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*/
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#define NVGPU_VM_AREA_ALLOC_FIXED_OFFSET (1 << 0)
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#define NVGPU_VM_AREA_ALLOC_SPARSE (1 << 1)
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int nvgpu_vm_area_alloc(struct vm_gk20a *vm, u32 pages, u32 page_size,
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u64 *addr, u32 flags);
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int nvgpu_vm_area_free(struct vm_gk20a *vm, u64 addr);
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struct nvgpu_vm_area *nvgpu_vm_area_find(struct vm_gk20a *vm, u64 addr);
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int nvgpu_vm_area_validate_buffer(struct vm_gk20a *vm,
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u64 map_offset, u64 map_size, int pgsz_idx,
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struct nvgpu_vm_area **pvm_area);
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#endif
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