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/*
* drivers/video/tegra/host/nvhost_hwctx.h
*
* Tegra Graphics Host Hardware Context Interface
*
* Copyright (c) 2010-2012, NVIDIA Corporation.
*
* 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 __NVHOST_HWCTX_H
#define __NVHOST_HWCTX_H
#include <linux/string.h>
#include <linux/kref.h>
#include <linux/nvhost.h>
#include <linux/nvmap.h>
struct nvhost_channel;
struct nvhost_cdma;
struct nvhost_hwctx {
struct kref ref;
struct nvhost_hwctx_handler *h;
struct nvhost_channel *channel;
bool valid;
bool has_timedout;
};
struct nvhost_hwctx_handler {
struct nvhost_hwctx * (*alloc) (struct nvhost_hwctx_handler *h,
struct nvhost_channel *ch);
void (*get) (struct nvhost_hwctx *ctx);
void (*put) (struct nvhost_hwctx *ctx);
void (*save_push) (struct nvhost_hwctx *ctx,
struct nvhost_cdma *cdma);
void (*save_service) (struct nvhost_hwctx *ctx);
void *priv;
};
struct hwctx_reginfo {
unsigned int offset:12;
unsigned int count:16;
unsigned int type:2;
};
enum {
HWCTX_REGINFO_DIRECT = 0,
HWCTX_REGINFO_INDIRECT,
HWCTX_REGINFO_INDIRECT_4X
};
#define HWCTX_REGINFO(offset, count, type) {offset, count, HWCTX_REGINFO_##type}
#endif
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