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b3446bc0b6
Move most of the dma_buf usage present in the mm_gk20a.c code out to Linux specific code and some commom/mm code. There's two primary groups of code: 1. dma_buf priv field code (for holding comptag data) 2. Comptag usage that relies on dma_buf pointers For (1) the dma_buf code was simply moved to common/linux/dmabuf.c since most of this code is clearly Linux specific. The comptag code was a bit more complicated since there is two parts to the comptag code. Firstly there's the code that manages the comptag memory. This is essentially a simple allocator. This was moved to common/mm/comptags.c since it can be shared across all chips. The second set of code is moved to common/linux/comptags.c since it is the interface between dma_bufs and the comptag memory. Two other fixes were done as well: - Add struct gk20a to the comptag allocator init so that the proper nvgpu_vzalloc() function could be used. - Add necessary includes to common/linux/vm_priv.h. JIRA NVGPU-30 JIRA NVGPU-138 Change-Id: I96c57f2763e5ebe18a2f2ee4b33e0e1a2597848c Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1566628 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
74 lines
2.1 KiB
C
74 lines
2.1 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_DMABUF_H__
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#define __COMMON_LINUX_DMABUF_H__
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#include <nvgpu/comptags.h>
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#include <nvgpu/list.h>
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#include <nvgpu/lock.h>
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#include <nvgpu/gmmu.h>
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struct sg_table;
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struct dma_buf;
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struct dma_buf_attachment;
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struct device;
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struct gk20a;
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struct gk20a_buffer_state;
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struct gk20a_dmabuf_priv {
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struct nvgpu_mutex lock;
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struct gk20a *g;
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struct gk20a_comptag_allocator *comptag_allocator;
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struct gk20a_comptags comptags;
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struct dma_buf_attachment *attach;
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struct sg_table *sgt;
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int pin_count;
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struct nvgpu_list_node states;
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u64 buffer_id;
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};
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/*
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* These are implemented in common/linux/comptags.c - these are dmabuf related
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* functions though so they are defined here. They cannot be defined in
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* <nvgpu/comptags.h> since that file must be OS agnostic.
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*/
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int gk20a_alloc_comptags(struct gk20a *g,
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struct device *dev,
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struct dma_buf *dmabuf,
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struct gk20a_comptag_allocator *allocator,
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u32 lines);
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void gk20a_get_comptags(struct device *dev, struct dma_buf *dmabuf,
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struct gk20a_comptags *comptags);
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struct sg_table *gk20a_mm_pin(struct device *dev, struct dma_buf *dmabuf);
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void gk20a_mm_unpin(struct device *dev, struct dma_buf *dmabuf,
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struct sg_table *sgt);
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int gk20a_dmabuf_alloc_drvdata(struct dma_buf *dmabuf, struct device *dev);
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int gk20a_dmabuf_get_state(struct dma_buf *dmabuf, struct gk20a *g,
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u64 offset, struct gk20a_buffer_state **state);
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#endif
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