i830.h

这个linux源代码是很全面的~基本完整了~使用c编译的~由于时间问题我没有亲自测试~但就算用来做参考资料也是非常好的

/* i830.h -- Intel I830 DRM template customization -*- linux-c -*-
 * Created: Thu Feb 15 00:01:12 2001 by [e-mail]
 *
 * 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
 * VA LINUX SYSTEMS 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:
 *    Gareth Hughes <[e-mail]>
 */

#ifndef __I830_H__
#define __I830_H__

/* This remains constant for all DRM template files.
 */
#define DRM(x) i830_##x

/* General customization:
 */
#define __HAVE_AGP		1
#define __MUST_HAVE_AGP		1
#define __HAVE_MTRR		1
#define __HAVE_CTX_BITMAP	1

#define DRIVER_AUTHOR		"VA Linux Systems Inc."

#define DRIVER_NAME		"i830"
#define DRIVER_DESC		"Intel 830M"
#define DRIVER_DATE		"20021108"

/* Interface history:
 *
 * 1.1: Original.
 * 1.2: ?
 * 1.3: New irq emit/wait ioctls.
 *      New pageflip ioctl.
 *      New getparam ioctl.
 *      State for texunits 3&4 in sarea.
 *      New (alternative) layout for texture state.
 */
#define DRIVER_MAJOR		1
#define DRIVER_MINOR		3
#define DRIVER_PATCHLEVEL	2

#define DRIVER_IOCTLS							    \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_INIT)]   = { i830_dma_init,    1, 1 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_VERTEX)] = { i830_dma_vertex,  1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_CLEAR)]  = { i830_clear_bufs,  1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_FLUSH)]  = { i830_flush_ioctl, 1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_GETAGE)] = { i830_getage,      1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_GETBUF)] = { i830_getbuf,      1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_SWAP)]   = { i830_swap_bufs,   1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_COPY)]   = { i830_copybuf,     1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_DOCOPY)] = { i830_docopy,      1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_FLIP)]   = { i830_flip_bufs,   1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_IRQ_EMIT)] = { i830_irq_emit,  1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_IRQ_WAIT)] = { i830_irq_wait,  1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_GETPARAM)] = { i830_getparam,  1, 0 }, \
	[DRM_IOCTL_NR(DRM_IOCTL_I830_SETPARAM)] = { i830_setparam,  1, 0 } 

#define __HAVE_COUNTERS         4
#define __HAVE_COUNTER6         _DRM_STAT_IRQ
#define __HAVE_COUNTER7         _DRM_STAT_PRIMARY
#define __HAVE_COUNTER8         _DRM_STAT_SECONDARY
#define __HAVE_COUNTER9         _DRM_STAT_DMA

/* Driver customization:
 */
#define __HAVE_RELEASE		1
#define DRIVER_RELEASE() do {						\
	i830_reclaim_buffers( dev, priv->pid );				\
} while (0)

/* DMA customization:
 */
#define __HAVE_DMA		1
#define __HAVE_DMA_QUEUE	1
#define __HAVE_DMA_WAITLIST	1
#define __HAVE_DMA_RECLAIM	1

#define __HAVE_DMA_QUIESCENT	1
#define DRIVER_DMA_QUIESCENT() do {					\
	i830_dma_quiescent( dev );					\
} while (0)


/* Driver will work either way: IRQ's save cpu time when waiting for
 * the card, but are subject to subtle interactions between bios,
 * hardware and the driver.
 */
#define USE_IRQS 0


#if USE_IRQS
#define __HAVE_DMA_IRQ		1
#define __HAVE_SHARED_IRQ	1

#define DRIVER_PREINSTALL() do {			\
	drm_i830_private_t *dev_priv =			\
		(drm_i830_private_t *)dev->dev_private;	\
							\
   	I830_WRITE16( I830REG_HWSTAM, 0xffff );	\
        I830_WRITE16( I830REG_INT_MASK_R, 0x0 );	\
      	I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 );	\
} while (0)


#define DRIVER_POSTINSTALL() do {				\
	drm_i830_private_t *dev_priv =				\
		(drm_i830_private_t *)dev->dev_private;		\
   	I830_WRITE16( I830REG_INT_ENABLE_R, 0x2 );		\
   	atomic_set(&dev_priv->irq_received, 0);			\
   	atomic_set(&dev_priv->irq_emitted, 0);			\
	init_waitqueue_head(&dev_priv->irq_queue);		\
} while (0)


/* This gets called too late to be useful: dev_priv has already been
 * freed.
 */
#define DRIVER_UNINSTALL() do {					\
} while (0)

#else
#define __HAVE_DMA_IRQ          0
#endif



/* Buffer customization:
 */

#define DRIVER_BUF_PRIV_T	drm_i830_buf_priv_t

#define DRIVER_AGP_BUFFERS_MAP( dev )					\
	((drm_i830_private_t *)((dev)->dev_private))->buffer_map

#endif