renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

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/* mga_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
 * 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 <gareth@valinux.com>
 */

#ifndef __MGA_DRV_H__
#define __MGA_DRV_H__

/* General customization:
 */

#define DRIVER_AUTHOR		"Gareth Hughes, VA Linux Systems Inc."

#define DRIVER_NAME		"mga"
#define DRIVER_DESC		"Matrox G200/G400"
#define DRIVER_DATE		"20060319"

#define DRIVER_MAJOR		3
#define DRIVER_MINOR		2
#define DRIVER_PATCHLEVEL	2

typedef struct drm_mga_primary_buffer {
	u8 *start;
	u8 *end;
	int size;

	u32 tail;
	int space;
	volatile long wrapped;

	volatile u32 *status;

	u32 last_flush;
	u32 last_wrap;

	u32 high_mark;
} drm_mga_primary_buffer_t;

typedef struct drm_mga_freelist {
	struct drm_mga_freelist *next;
	struct drm_mga_freelist *prev;
	drm_mga_age_t age;
	drm_buf_t *buf;
} drm_mga_freelist_t;

typedef struct {
	drm_mga_freelist_t *list_entry;
	int discard;
	int dispatched;
} drm_mga_buf_priv_t;

typedef struct drm_mga_private {
	drm_mga_primary_buffer_t prim;
	drm_mga_sarea_t *sarea_priv;

	drm_mga_freelist_t *head;
	drm_mga_freelist_t *tail;

	unsigned int warp_pipe;
	unsigned long warp_pipe_phys[MGA_MAX_WARP_PIPES];

	int chipset;
	int usec_timeout;

	/**
	 * If set, the new DMA initialization sequence was used.  This is
	 * primarilly used to select how the driver should uninitialized its
	 * internal DMA structures.
	 */
	int used_new_dma_init;

	/**
	 * If AGP memory is used for DMA buffers, this will be the value
	 * \c MGA_PAGPXFER.  Otherwise, it will be zero (for a PCI transfer).
	 */
	u32 dma_access;

	/**
	 * If AGP memory is used for DMA buffers, this will be the value
	 * \c MGA_WAGP_ENABLE.  Otherwise, it will be zero (for a PCI
	 * transfer).
	 */
	u32 wagp_enable;

	/**
	 * \name MMIO region parameters.
	 * 
	 * \sa drm_mga_private_t::mmio
	 */
	/*@{*/
	u32 mmio_base;             /**< Bus address of base of MMIO. */
	u32 mmio_size;             /**< Size of the MMIO region. */
	/*@}*/

	u32 clear_cmd;
	u32 maccess;

	wait_queue_head_t fence_queue;
	atomic_t last_fence_retired;
	u32 next_fence_to_post;

	unsigned int fb_cpp;
	unsigned int front_offset;
	unsigned int front_pitch;
	unsigned int back_offset;
	unsigned int back_pitch;

	unsigned int depth_cpp;
	unsigned int depth_offset;
	unsigned int depth_pitch;

	unsigned int texture_offset;
	unsigned int texture_size;

	drm_local_map_t *sarea;
	drm_local_map_t *mmio;
	drm_local_map_t *status;
	drm_local_map_t *warp;
	drm_local_map_t *primary;
	drm_local_map_t *agp_textures;
	
	unsigned long agp_handle;
	unsigned int agp_size;
} drm_mga_private_t;

extern drm_ioctl_desc_t mga_ioctls[];
extern int mga_max_ioctl;

				/* mga_dma.c */
extern int mga_dma_bootstrap(DRM_IOCTL_ARGS);
extern int mga_dma_init(DRM_IOCTL_ARGS);
extern int mga_dma_flush(DRM_IOCTL_ARGS);
extern int mga_dma_reset(DRM_IOCTL_ARGS);
extern int mga_dma_buffers(DRM_IOCTL_ARGS);
extern int mga_driver_load(drm_device_t *dev, unsigned long flags);
extern int mga_driver_unload(drm_device_t * dev);
extern void mga_driver_lastclose(drm_device_t * dev);
extern int mga_driver_dma_quiescent(drm_device_t * dev);

extern int mga_do_wait_for_idle(drm_mga_private_t * dev_priv);

extern void mga_do_dma_flush(drm_mga_private_t * dev_priv);
extern void mga_do_dma_wrap_start(drm_mga_private_t * dev_priv);
extern void mga_do_dma_wrap_end(drm_mga_private_t * dev_priv);

extern int mga_freelist_put(drm_device_t * dev, drm_buf_t * buf);

				/* mga_warp.c */
extern unsigned int mga_warp_microcode_size(const drm_mga_private_t * dev_priv);
extern int mga_warp_install_microcode(drm_mga_private_t * dev_priv);
extern int mga_warp_init(drm_mga_private_t * dev_priv);

				/* mga_irq.c */
extern int mga_driver_fence_wait(drm_device_t * dev, unsigned int *sequence);
extern int mga_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence);
extern irqreturn_t mga_driver_irq_handler(DRM_IRQ_ARGS);
extern void mga_driver_irq_preinstall(drm_device_t * dev);
extern void mga_driver_irq_postinstall(drm_device_t * dev);
extern void mga_driver_irq_uninstall(drm_device_t * dev);
extern long mga_compat_ioctl(struct file *filp, unsigned int cmd,
			     unsigned long arg);

#define mga_flush_write_combine()	DRM_WRITEMEMORYBARRIER()

#if defined(__linux__) && defined(__alpha__)
#define MGA_BASE( reg )		((unsigned long)(dev_priv->mmio->handle))
#define MGA_ADDR( reg )		(MGA_BASE(reg) + reg)

#define MGA_DEREF( reg )	*(volatile u32 *)MGA_ADDR( reg )
#define MGA_DEREF8( reg )	*(volatile u8 *)MGA_ADDR( reg )

#define MGA_READ( reg )		(_MGA_READ((u32 *)MGA_ADDR(reg)))
#define MGA_READ8( reg )	(_MGA_READ((u8 *)MGA_ADDR(reg)))
#define MGA_WRITE( reg, val )	do { DRM_WRITEMEMORYBARRIER(); MGA_DEREF( reg ) = val; } while (0)
#define MGA_WRITE8( reg, val )  do { DRM_WRITEMEMORYBARRIER(); MGA_DEREF8( reg ) = val; } while (0)

static inline u32 _MGA_READ(u32 * addr)
{
	DRM_MEMORYBARRIER();
	return *(volatile u32 *)addr;
}
#else
#define MGA_READ8( reg )	DRM_READ8(dev_priv->mmio, (reg))
#define MGA_READ( reg )		DRM_READ32(dev_priv->mmio, (reg))
#define MGA_WRITE8( reg, val )  DRM_WRITE8(dev_priv->mmio, (reg), (val))
#define MGA_WRITE( reg, val )	DRM_WRITE32(dev_priv->mmio, (reg), (val))
#endif

#define DWGREG0 	0x1c00
#define DWGREG0_END 	0x1dff
#define DWGREG1		0x2c00
#define DWGREG1_END	0x2dff

#define ISREG0(r)	(r >= DWGREG0 && r <= DWGREG0_END)
#define DMAREG0(r)	(u8)((r - DWGREG0) >> 2)
#define DMAREG1(r)	(u8)(((r - DWGREG1) >> 2) | 0x80)
#define DMAREG(r)	(ISREG0(r) ? DMAREG0(r) : DMAREG1(r))

/* ================================================================
 * Helper macross...
 */

#define MGA_EMIT_STATE( dev_priv, dirty )				\
do {									\
	if ( (dirty) & ~MGA_UPLOAD_CLIPRECTS ) {			\
		if ( dev_priv->chipset >= MGA_CARD_TYPE_G400 ) {	\
			mga_g400_emit_state( dev_priv );		\
		} else {						\
			mga_g200_emit_state( dev_priv );		\
		}							\
	}								\
} while (0)

#define WRAP_TEST_WITH_RETURN( dev_priv )				\
do {									\
	if ( test_bit( 0, &dev_priv->prim.wrapped ) ) {			\
		if ( mga_is_idle( dev_priv ) ) {			\
			mga_do_dma_wrap_end( dev_priv );		\
		} else if ( dev_priv->prim.space <			\
			    dev_priv->prim.high_mark ) {		\
			if ( MGA_DMA_DEBUG )				\
				DRM_INFO( "%s: wrap...\n", __FUNCTION__ );	\
			return DRM_ERR(EBUSY);			\
		}							\
	}								\
} while (0)

#define WRAP_WAIT_WITH_RETURN( dev_priv )				\
do {									\
	if ( test_bit( 0, &dev_priv->prim.wrapped ) ) {			\
		if ( mga_do_wait_for_idle( dev_priv ) < 0 ) {		\
			if ( MGA_DMA_DEBUG )				\
				DRM_INFO( "%s: wrap...\n", __FUNCTION__ );	\
			return DRM_ERR(EBUSY);			\
		}							\
		mga_do_dma_wrap_end( dev_priv );			\
	}								\
} while (0)

/* ================================================================
 * Primary DMA command stream
 */

#define MGA_VERBOSE	0

#define DMA_LOCALS	unsigned int write; volatile u8 *prim;

#define DMA_BLOCK_SIZE	(5 * sizeof(u32))

#define BEGIN_DMA( n )							\
do {									\
	if ( MGA_VERBOSE ) {						\
		DRM_INFO( "BEGIN_DMA( %d ) in %s\n",			\
			  (n), __FUNCTION__ );				\
		DRM_INFO( "   space=0x%x req=0x%Zx\n",			\
			  dev_priv->prim.space, (n) * DMA_BLOCK_SIZE );	\
	}								\
	prim = dev_priv->prim.start;					\
	write = dev_priv->prim.tail;					\
} while (0)

#define BEGIN_DMA_WRAP()						\
do {									\
	if ( MGA_VERBOSE ) {						\
		DRM_INFO( "BEGIN_DMA() in %s\n", __FUNCTION__ );		\
		DRM_INFO( "   space=0x%x\n", dev_priv->prim.space );	\
	}								\
	prim = dev_priv->prim.start;					\
	write = dev_priv->prim.tail;					\
} while (0)

#define ADVANCE_DMA()							\
do {									\
	dev_priv->prim.tail = write;					\
	if ( MGA_VERBOSE ) {						\
		DRM_INFO( "ADVANCE_DMA() tail=0x%05x sp=0x%x\n",	\
			  write, dev_priv->prim.space );		\
	}								\
} while (0)

#define FLUSH_DMA()							\
do {									\
	if ( 0 ) {							\
		DRM_INFO( "%s:\n", __FUNCTION__ );				\
		DRM_INFO( "   tail=0x%06x head=0x%06lx\n",		\
			  dev_priv->prim.tail,				\
			  MGA_READ( MGA_PRIMADDRESS ) -			\
			  dev_priv->primary->offset );			\
	}								\
	if ( !test_bit( 0, &dev_priv->prim.wrapped ) ) {		\
		if ( dev_priv->prim.space <				\
		     dev_priv->prim.high_mark ) {			\
			mga_do_dma_wrap_start( dev_priv );		\
		} else {						\
			mga_do_dma_flush( dev_priv );			\
		}							\
	}								\
} while (0)

/* Never use this, always use DMA_BLOCK(...) for primary DMA output.
 */
#define DMA_WRITE( offset, val )					\
do {									\
	if ( MGA_VERBOSE ) {						\
		DRM_INFO( "   DMA_WRITE( 0x%08x ) at 0x%04Zx\n",	\
			  (u32)(val), write + (offset) * sizeof(u32) );	\
	}								\
	*(volatile u32 *)(prim + write + (offset) * sizeof(u32)) = val;	\
} while (0)

#define DMA_BLOCK( reg0, val0, reg1, val1, reg2, val2, reg3, val3 )	\
do {									\
	DMA_WRITE( 0, ((DMAREG( reg0 ) << 0) |				\
		       (DMAREG( reg1 ) << 8) |				\
		       (DMAREG( reg2 ) << 16) |				\
		       (DMAREG( reg3 ) << 24)) );			\
	DMA_WRITE( 1, val0 );						\
	DMA_WRITE( 2, val1 );						\
	DMA_WRITE( 3, val2 );						\
	DMA_WRITE( 4, val3 );						\
	write += DMA_BLOCK_SIZE;					\
} while (0)

/* Buffer aging via primary DMA stream head pointer.
 */

#define SET_AGE( age, h, w )						\
do {									\
	(age)->head = h;						\
	(age)->wrap = w;						\
} while (0)

#define TEST_AGE( age, h, w )		( (age)->wrap < w ||		\
					  ( (age)->wrap == w &&		\
					    (age)->head < h ) )

#define AGE_BUFFER( buf_priv )						\
do {									\
	drm_mga_freelist_t *entry = (buf_priv)->list_entry;		\
	if ( (buf_priv)->dispatched ) {					\
		entry->age.head = (dev_priv->prim.tail +		\
				   dev_priv->primary->offset);		\
		entry->age.wrap = dev_priv->sarea_priv->last_wrap;	\
	} else {							\
		entry->age.head = 0;					\
		entry->age.wrap = 0;					\
	}								\
} while (0)

#define MGA_ENGINE_IDLE_MASK		(MGA_SOFTRAPEN |		\
					 MGA_DWGENGSTS |		\
					 MGA_ENDPRDMASTS)
#define MGA_DMA_IDLE_MASK		(MGA_SOFTRAPEN |		\
					 MGA_ENDPRDMASTS)

#define MGA_DMA_DEBUG			0

/* A reduced set of the mga registers.
 */
#define MGA_CRTC_INDEX			0x1fd4
#define MGA_CRTC_DATA			0x1fd5

/* CRTC11 */
#define MGA_VINTCLR			(1 << 4)
#define MGA_VINTEN			(1 << 5)

#define MGA_ALPHACTRL 			0x2c7c
#define MGA_AR0 			0x1c60
#define MGA_AR1 			0x1c64
#define MGA_AR2 			0x1c68
#define MGA_AR3 			0x1c6c
#define MGA_AR4 			0x1c70
#define MGA_AR5 			0x1c74
#define MGA_AR6 			0x1c78

#define MGA_CXBNDRY			0x1c80
#define MGA_CXLEFT 			0x1ca0
#define MGA_CXRIGHT			0x1ca4

#define MGA_DMAPAD 			0x1c54
#define MGA_DSTORG 			0x2cb8
#define MGA_DWGCTL 			0x1c00
#	define MGA_OPCOD_MASK			(15 << 0)
#	define MGA_OPCOD_TRAP			(4 << 0)
#	define MGA_OPCOD_TEXTURE_TRAP		(6 << 0)
#	define MGA_OPCOD_BITBLT			(8 << 0)
#	define MGA_OPCOD_ILOAD			(9 << 0)
#	define MGA_ATYPE_MASK			(7 << 4)
#	define MGA_ATYPE_RPL			(0 << 4)
#	define MGA_ATYPE_RSTR			(1 << 4)
#	define MGA_ATYPE_ZI			(3 << 4)
#	define MGA_ATYPE_BLK			(4 << 4)
#	define MGA_ATYPE_I			(7 << 4)
#	define MGA_LINEAR			(1 << 7)
#	define MGA_ZMODE_MASK			(7 << 8)
#	define MGA_ZMODE_NOZCMP			(0 << 8)
#	define MGA_ZMODE_ZE			(2 << 8)
#	define MGA_ZMODE_ZNE			(3 << 8)
#	define MGA_ZMODE_ZLT			(4 << 8)
#	define MGA_ZMODE_ZLTE			(5 << 8)
#	define MGA_ZMODE_ZGT			(6 << 8)
#	define MGA_ZMODE_ZGTE			(7 << 8)
#	define MGA_SOLID			(1 << 11)
#	define MGA_ARZERO			(1 << 12)


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