/*
* 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 __COMMON_LINUX_VM_PRIV_H__
#define __COMMON_LINUX_VM_PRIV_H__
#include <nvgpu/types.h>
struct sg_table;
struct dma_buf;
struct vm_gk20a;
struct vm_gk20a_mapping_batch;
struct buffer_attrs {
struct sg_table *sgt;
u64 size;
u64 align;
u32 ctag_offset;
u32 ctag_lines;
u32 ctag_allocated_lines;
int pgsz_idx;
u8 kind_v;
bool use_kind_v;
u8 uc_kind_v;
bool use_uc_kind_v;
bool ctag_user_mappable;
};
u64 nvgpu_vm_map(struct vm_gk20a *vm,
struct dma_buf *dmabuf,
u64 offset_align,
u32 flags,
/*
* compressible kind if
* NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL is
* specified, otherwise just the kind
*/
s16 compr_kind,
/*
* incompressible kind if
* NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL is
* specified, otherwise ignored
*/
s16 incompr_kind,
bool user_mapped,
int rw_flag,
u64 buffer_offset,
u64 mapping_size,
struct vm_gk20a_mapping_batch *mapping_batch);
/*
* Notes:
* - Batch may be NULL if map op is not part of a batch.
* - If NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL is set,
* compr_kind and incompr_kind work as explained in nvgpu.h.
* - If NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL is NOT set,
* compr_kind holds the kind and kernel will figure out whether
* it is a compressible or incompressible kind. If compressible, kernel will
* also figure out the incompressible counterpart or return an error.
*/
int nvgpu_vm_map_buffer(struct vm_gk20a *vm,
int dmabuf_fd,
u64 *offset_align,
u32 flags, /* NVGPU_AS_MAP_BUFFER_FLAGS_ */
s16 compr_kind,
s16 incompr_kind,
u64 buffer_offset,
u64 mapping_size,
struct vm_gk20a_mapping_batch *batch);
void nvgpu_vm_unmap(struct vm_gk20a *vm, u64 offset);
/* find buffer corresponding to va */
int nvgpu_vm_find_buffer(struct vm_gk20a *vm, u64 gpu_va,
struct dma_buf **dmabuf,
u64 *offset);
enum nvgpu_aperture gk20a_dmabuf_aperture(struct gk20a *g,
struct dma_buf *dmabuf);
int validate_fixed_buffer(struct vm_gk20a *vm,
struct buffer_attrs *bfr,
u64 map_offset, u64 map_size,
struct nvgpu_vm_area **pva_node);
int setup_buffer_kind_and_compression(struct vm_gk20a *vm,
u32 flags,
struct buffer_attrs *bfr,
enum gmmu_pgsz_gk20a pgsz_idx);
int gk20a_alloc_comptags(struct gk20a *g,
struct device *dev,
struct dma_buf *dmabuf,
struct gk20a_comptag_allocator *allocator,
u32 lines);
#endif
