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/* i810_drv.h -- Private header for the Matrox g200/g400 driver -*- linux-c -*-
 * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors: Rickard E. (Rik) Faith <faith@valinux.com>
 * 	    Jeff Hartmann <jhartmann@valinux.com>
 *
 */

#ifndef _I810_DRV_H_
#define _I810_DRV_H_

typedef struct drm_i810_buf_priv {
   	u32 *in_use;
   	int my_use_idx;
	int currently_mapped;
	void *virtual;
	void *kernel_virtual;
} drm_i810_buf_priv_t;

typedef struct _drm_i810_ring_buffer{
	int tail_mask;
	unsigned long Start;
	unsigned long End;
	unsigned long Size;
	u8 *virtual_start;
	int head;
	int tail;
	int space;
} drm_i810_ring_buffer_t;

typedef struct drm_i810_private {
	drm_map_t *sarea_map;
	drm_map_t *buffer_map;
	drm_map_t *mmio_map;

	drm_i810_sarea_t *sarea_priv;
   	drm_i810_ring_buffer_t ring;

      	void *hw_status_page;
   	unsigned long counter;

	dma_addr_t dma_status_page;

	drm_buf_t *mmap_buffer;


	u32 front_di1, back_di1, zi1;

	int back_offset;
	int depth_offset;
	int overlay_offset;
	int overlay_physical;
	int w, h;
	int pitch;
  	int back_pitch;
	int depth_pitch;

	int do_boxes;
	int dma_used;

	int current_page;
	int page_flipping;

	wait_queue_head_t irq_queue;
   	atomic_t irq_received;
   	atomic_t irq_emitted;
  
        int front_offset;
} drm_i810_private_t;

				/* i810_dma.c */
extern int  i810_dma_schedule(drm_device_t *dev, int locked);
extern int  i810_getbuf(struct inode *inode, struct file *filp,
			unsigned int cmd, unsigned long arg);
extern int  i810_dma_init(struct inode *inode, struct file *filp,
			  unsigned int cmd, unsigned long arg);
extern int  i810_dma_cleanup(drm_device_t *dev);