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0853109c99
Refactor the last nvgpu_vm functions from the mm_gk20a.c code. This removes some usages of dma_buf from the mm_gk20a.c code, too, which helps make mm_gk20a.c less Linux specific. Also delete some header files that are no longer necessary in gk20a/mm_gk20a.c which are Linux specific. The mm_gk20a.c code is now quite close to being Linux free. JIRA NVGPU-30 JIRA NVGPU-138 Change-Id: I72b370bd85a7b029768b0fb4827d6abba42007c3 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1566629 Reviewed-by: Konsta Holtta <kholtta@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/*
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* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __COMMON_LINUX_VM_PRIV_H__
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#define __COMMON_LINUX_VM_PRIV_H__
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#include <nvgpu/types.h>
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struct sg_table;
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struct dma_buf;
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struct vm_gk20a;
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struct vm_gk20a_mapping_batch;
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struct buffer_attrs {
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struct sg_table *sgt;
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u64 size;
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u64 align;
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u32 ctag_offset;
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u32 ctag_lines;
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u32 ctag_allocated_lines;
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int pgsz_idx;
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u8 kind_v;
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bool use_kind_v;
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u8 uc_kind_v;
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bool use_uc_kind_v;
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bool ctag_user_mappable;
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};
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u64 nvgpu_vm_map(struct vm_gk20a *vm,
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struct dma_buf *dmabuf,
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u64 offset_align,
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u32 flags,
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/*
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* compressible kind if
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* NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL is
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* specified, otherwise just the kind
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*/
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s16 compr_kind,
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/*
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* incompressible kind if
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* NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL is
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* specified, otherwise ignored
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*/
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s16 incompr_kind,
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bool user_mapped,
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int rw_flag,
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u64 buffer_offset,
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u64 mapping_size,
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struct vm_gk20a_mapping_batch *mapping_batch);
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/*
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* Notes:
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* - Batch may be NULL if map op is not part of a batch.
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* - If NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL is set,
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* compr_kind and incompr_kind work as explained in nvgpu.h.
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* - If NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL is NOT set,
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* compr_kind holds the kind and kernel will figure out whether
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* it is a compressible or incompressible kind. If compressible, kernel will
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* also figure out the incompressible counterpart or return an error.
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*/
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int nvgpu_vm_map_buffer(struct vm_gk20a *vm,
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int dmabuf_fd,
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u64 *offset_align,
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u32 flags, /* NVGPU_AS_MAP_BUFFER_FLAGS_ */
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s16 compr_kind,
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s16 incompr_kind,
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u64 buffer_offset,
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u64 mapping_size,
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struct vm_gk20a_mapping_batch *batch);
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void nvgpu_vm_unmap(struct vm_gk20a *vm, u64 offset);
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/* find buffer corresponding to va */
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int nvgpu_vm_find_buf(struct vm_gk20a *vm, u64 gpu_va,
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struct dma_buf **dmabuf,
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u64 *offset);
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enum nvgpu_aperture gk20a_dmabuf_aperture(struct gk20a *g,
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struct dma_buf *dmabuf);
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int validate_fixed_buffer(struct vm_gk20a *vm,
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struct buffer_attrs *bfr,
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u64 map_offset, u64 map_size,
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struct nvgpu_vm_area **pva_node);
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#endif
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