/* 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_

/* General customization:
 */

#define DRIVER_AUTHOR		"VA Linux Systems Inc."

#define DRIVER_NAME		"i810"
#define DRIVER_DESC		"Intel i810"
#define DRIVER_DATE		"20030605"

/* Interface history
 *
 * 1.1   - XFree86 4.1
 * 1.2   - XvMC interfaces
 *       - XFree86 4.2
 * 1.2.1 - Disable copying code (leave stub ioctls for backwards compatibility)
 *       - Remove requirement for interrupt (leave stubs again)
 * 1.3   - Add page flipping.
 * 1.4   - fix DRM interface
 */
#define DRIVER_MAJOR		1
#define DRIVER_MINOR		4
#define DRIVER_PATCHLEVEL	0

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 *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_driver_dma_quiescent(drm_device_t * dev);
extern void i810_driver_reclaim_buffers_locked(drm_device_t * dev,
					       struct file *filp);
extern int i810_driver_load(struct drm_device *, unsigned long flags);
extern void i810_driver_lastclose(drm_device_t * dev);
extern void i810_driver_preclose(drm_device_t * dev, DRMFILE filp);
extern void i810_driver_reclaim_buffers_locked(drm_device_t * dev,
					       struct file *filp);
extern int i810_driver_device_is_agp(drm_device_t * dev);

extern drm_ioctl_desc_t i810_ioctls[];
extern int i810_max_ioctl;

#define I810_BASE(reg)		((unsigned long) \
				dev_priv->mmio_map->handle)
#define I810_ADDR(reg)		(I810_BASE(reg) + reg)
#define I810_DEREF(reg)		*(__volatile__ int *)I810_ADDR(reg)
#define I810_READ(reg)		I810_DEREF(reg)
#define I810_WRITE(reg,val) 	do { I810_DEREF(reg) = val; } while (0)
#define I810_DEREF16(reg)	*(__volatile__ u16 *)I810_ADDR(reg)
#define I810_READ16(reg)	I810_DEREF16(reg)
#define I810_WRITE16(reg,val)	do { I810_DEREF16(reg) = val; } while (0)

#define I810_VERBOSE 0
#define RING_LOCALS	unsigned int outring, ringmask; \
                        volatile char *virt;

#define BEGIN_LP_RING(n) do {						\
	if (I810_VERBOSE)                                               \
           DRM_DEBUG("BEGIN_LP_RING(%d) in %s\n", n, __FUNCTION__);	\
	if (dev_priv->ring.space < n*4)					\
		i810_wait_ring(dev, n*4);				\
	dev_priv->ring.space -= n*4;					\
	outring = dev_priv->ring.tail;					\
	ringmask = dev_priv->ring.tail_mask;				\
	virt = dev_priv->ring.virtual_start;				\
} while (0)

#define ADVANCE_LP_RING() do {				        \