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/*
* drivers/video/tegra/host/nvhost_channel.h
*
* Tegra Graphics Host Channel
*
* Copyright (c) 2010-2011, NVIDIA Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __NVHOST_CHANNEL_H
#define __NVHOST_CHANNEL_H
#include "nvhost_cdma.h"
#include "nvhost_acm.h"
#include "nvhost_hwctx.h"
#include "nvhost_job.h"
#include <linux/cdev.h>
#include <linux/io.h>
#define NVHOST_MAX_WAIT_CHECKS 256
#define NVHOST_MAX_GATHERS 512
#define NVHOST_MAX_HANDLES 1280
#define NVHOST_MAX_POWERGATE_IDS 2
struct nvhost_master;
struct nvhost_waitchk;
struct nvhost_device;
struct nvhost_channel_gather {
u32 words;
phys_addr_t mem;
u32 mem_id;
int offset;
};
struct nvhost_channel {
int refcount;
int chid;
u32 syncpt_id;
struct mutex reflock;
struct mutex submitlock;
void __iomem *aperture;
struct nvhost_hwctx *cur_ctx;
struct device *node;
struct nvhost_device *dev;
struct cdev cdev;
struct nvhost_hwctx_handler ctxhandler;
struct nvhost_cdma cdma;
};
int nvhost_channel_init(
struct nvhost_channel *ch,
struct nvhost_master *dev, int index);
int nvhost_channel_submit(struct nvhost_job *job);
struct nvhost_channel *nvhost_getchannel(struct nvhost_channel *ch);
void nvhost_putchannel(struct nvhost_channel *ch, struct nvhost_hwctx *ctx);
int nvhost_channel_suspend(struct nvhost_channel *ch);
#define channel_cdma_op(ch) (nvhost_get_host(ch->dev)->op.cdma)
#define channel_op(ch) (nvhost_get_host(ch->dev)->op.channel)
#define host_channel_op(host) (host->op.channel)
int nvhost_channel_drain_read_fifo(void __iomem *chan_regs,
u32 *ptr, unsigned int count, unsigned int *pending);
int nvhost_channel_read_3d_reg(
struct nvhost_channel *channel,
struct nvhost_hwctx *hwctx,
u32 offset,
u32 *value);
#endif
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