67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*
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* drivers/video/tegra/host/host1x/user_hwctx.h
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*
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* Tegra Graphics Host HOST1X Hardware Context Interface
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*
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* Copyright (c) 2013, NVIDIA Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __NVHOST_USER_HWCTX_H
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#define __NVHOST_USER_HWCTX_H
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#include <linux/kref.h>
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#include "nvhost_hwctx.h"
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struct nvhost_hwctx_handler;
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struct nvhost_channel;
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struct sg_table;
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#define to_user_hwctx_handler(handler) \
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container_of((handler), struct user_hwctx_handler, h)
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#define to_user_hwctx(h) container_of((h), struct user_hwctx, hwctx)
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#define user_hwctx_handler(_hwctx) to_user_hwctx_handler((_hwctx)->hwctx.h)
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struct user_hwctx {
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struct nvhost_hwctx hwctx;
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struct mem_handle *save_buf;
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u32 save_slots;
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struct sg_table *save_sgt;
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u32 save_size;
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u32 save_offset;
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struct mem_handle *restore;
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u32 restore_size;
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u32 *restore_virt;
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struct sg_table *restore_sgt;
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u32 restore_offset;
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};
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struct user_hwctx_handler {
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struct nvhost_hwctx_handler h;
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};
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struct nvhost_hwctx_handler *user_ctxhandler_init(u32 syncpt,
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u32 waitbase, struct nvhost_channel *ch);
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void user_ctxhandler_free(struct nvhost_hwctx_handler *h);
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int user_hwctx_set_restore(struct user_hwctx *ctx,
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ulong mem, u32 offset, u32 words);
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int user_hwctx_set_save(struct user_hwctx *ctx,
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ulong mem, u32 offset, u32 words, struct nvhost_reloc *reloc);
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#endif
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