[mirror_ubuntu-bionic-kernel.git] / drivers / char / drm / r128_drv.h

/* r128_drv.h -- Private header for r128 driver -*- linux-c -*-
 * Created: Mon Dec 13 09:51:11 1999 by faith@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>
 *    Kevin E. Martin <martin@valinux.com>
 *    Gareth Hughes <gareth@valinux.com>
 *    Michel Dänzer <daenzerm@student.ethz.ch>
 */

#ifndef __R128_DRV_H__
#define __R128_DRV_H__

/* General customization:
 */
#define DRIVER_AUTHOR		"Gareth Hughes, VA Linux Systems Inc."

#define DRIVER_NAME		"r128"
#define DRIVER_DESC		"ATI Rage 128"
#define DRIVER_DATE		"20030725"

/* Interface history:
 *
 * ??  - ??
 * 2.4 - Add support for ycbcr textures (no new ioctls)
 * 2.5 - Add FLIP ioctl, disable FULLSCREEN.
 */
#define DRIVER_MAJOR		2
#define DRIVER_MINOR		5
#define DRIVER_PATCHLEVEL	0

#define GET_RING_HEAD(dev_priv)		R128_READ( R128_PM4_BUFFER_DL_RPTR )

typedef struct drm_r128_freelist {
	unsigned int age;
	struct drm_buf *buf;
	struct drm_r128_freelist *next;
	struct drm_r128_freelist *prev;
} drm_r128_freelist_t;

typedef struct drm_r128_ring_buffer {
	u32 *start;
	u32 *end;
	int size;
	int size_l2qw;

	u32 tail;
	u32 tail_mask;
	int space;

	int high_mark;
} drm_r128_ring_buffer_t;

typedef struct drm_r128_private {
	drm_r128_ring_buffer_t ring;
	drm_r128_sarea_t *sarea_priv;

	int cce_mode;
	int cce_fifo_size;
	int cce_running;

	drm_r128_freelist_t *head;
	drm_r128_freelist_t *tail;

	int usec_timeout;
	int is_pci;
	unsigned long cce_buffers_offset;

	atomic_t idle_count;

	int page_flipping;
	int current_page;
	u32 crtc_offset;
	u32 crtc_offset_cntl;

	u32 color_fmt;
	unsigned int front_offset;
	unsigned int front_pitch;
	unsigned int back_offset;
	unsigned int back_pitch;

	u32 depth_fmt;
	unsigned int depth_offset;
	unsigned int depth_pitch;
	unsigned int span_offset;

	u32 front_pitch_offset_c;
	u32 back_pitch_offset_c;
	u32 depth_pitch_offset_c;
	u32 span_pitch_offset_c;

	drm_local_map_t *sarea;
	drm_local_map_t *mmio;
	drm_local_map_t *cce_ring;
	drm_local_map_t *ring_rptr;
	drm_local_map_t *agp_textures;
	struct drm_ati_pcigart_info gart_info;
} drm_r128_private_t;

typedef struct drm_r128_buf_priv {
	u32 age;
	int prim;
	int discard;
	int dispatched;
	drm_r128_freelist_t *list_entry;
} drm_r128_buf_priv_t;

extern struct drm_ioctl_desc r128_ioctls[];
extern int r128_max_ioctl;

				/* r128_cce.c */
extern int r128_cce_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int r128_cce_start(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int r128_cce_stop(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int r128_cce_reset(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int r128_cce_idle(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int r128_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int r128_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int r128_cce_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv);

extern void r128_freelist_reset(struct drm_device * dev);

extern int r128_wait_ring(drm_r128_private_t * dev_priv, int n);

extern int r128_do_cce_idle(drm_r128_private_t * dev_priv);
extern int r128_do_cleanup_cce(struct drm_device * dev);

extern int r128_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence);

extern irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS);
extern void r128_driver_irq_preinstall(struct drm_device * dev);
extern void r128_driver_irq_postinstall(struct drm_device * dev);
extern void r128_driver_irq_uninstall(struct drm_device * dev);
extern void r128_driver_lastclose(struct drm_device * dev);
extern void r128_driver_preclose(struct drm_device * dev,
				 struct drm_file *file_priv);

extern long r128_compat_ioctl(struct file *filp, unsigned int cmd,
			      unsigned long arg);

/* Register definitions, register access macros and drmAddMap constants
 * for Rage 128 kernel driver.
 */

#define R128_AUX_SC_CNTL		0x1660
#	define R128_AUX1_SC_EN			(1 << 0)
#	define R128_AUX1_SC_MODE_OR		(0 << 1)
#	define R128_AUX1_SC_MODE_NAND		(1 << 1)
#	define R128_AUX2_SC_EN			(1 << 2)
#	define R128_AUX2_SC_MODE_OR		(0 << 3)
#	define R128_AUX2_SC_MODE_NAND		(1 << 3)
#	define R128_AUX3_SC_EN			(1 << 4)
#	define R128_AUX3_SC_MODE_OR		(0 << 5)
#	define R128_AUX3_SC_MODE_NAND		(1 << 5)
#define R128_AUX1_SC_LEFT		0x1664
#define R128_AUX1_SC_RIGHT		0x1668
#define R128_AUX1_SC_TOP		0x166c
#define R128_AUX1_SC_BOTTOM		0x1670
#define R128_AUX2_SC_LEFT		0x1674
#define R128_AUX2_SC_RIGHT		0x1678
#define R128_AUX2_SC_TOP		0x167c
#define R128_AUX2_SC_BOTTOM		0x1680
#define R128_AUX3_SC_LEFT		0x1684
#define R128_AUX3_SC_RIGHT		0x1688
#define R128_AUX3_SC_TOP		0x168c
#define R128_AUX3_SC_BOTTOM		0x1690

#define R128_BRUSH_DATA0		0x1480
#define R128_BUS_CNTL			0x0030
#	define R128_BUS_MASTER_DIS		(1 << 6)

#define R128_CLOCK_CNTL_INDEX		0x0008
#define R128_CLOCK_CNTL_DATA		0x000c
#	define R128_PLL_WR_EN			(1 << 7)
#define R128_CONSTANT_COLOR_C		0x1d34
#define R128_CRTC_OFFSET		0x0224
#define R128_CRTC_OFFSET_CNTL		0x0228
#	define R128_CRTC_OFFSET_FLIP_CNTL	(1 << 16)

#define R128_DP_GUI_MASTER_CNTL		0x146c
#       define R128_GMC_SRC_PITCH_OFFSET_CNTL	(1    <<  0)
#       define R128_GMC_DST_PITCH_OFFSET_CNTL	(1    <<  1)
#	define R128_GMC_BRUSH_SOLID_COLOR	(13   <<  4)
#	define R128_GMC_BRUSH_NONE		(15   <<  4)
#	define R128_GMC_DST_16BPP		(4    <<  8)
#	define R128_GMC_DST_24BPP		(5    <<  8)
#	define R128_GMC_DST_32BPP		(6    <<  8)
#       define R128_GMC_DST_DATATYPE_SHIFT	8
#	define R128_GMC_SRC_DATATYPE_COLOR	(3    << 12)
#	define R128_DP_SRC_SOURCE_MEMORY	(2    << 24)
#	define R128_DP_SRC_SOURCE_HOST_DATA	(3    << 24)
#	define R128_GMC_CLR_CMP_CNTL_DIS	(1    << 28)
#	define R128_GMC_AUX_CLIP_DIS		(1    << 29)
#	define R128_GMC_WR_MSK_DIS		(1    << 30)
#	define R128_ROP3_S			0x00cc0000
#	define R128_ROP3_P			0x00f00000
#define R128_DP_WRITE_MASK		0x16cc
#define R128_DST_PITCH_OFFSET_C		0x1c80
#	define R128_DST_TILE			(1 << 31)

#define R128_GEN_INT_CNTL		0x0040
#	define R128_CRTC_VBLANK_INT_EN		(1 <<  0)
#define R128_GEN_INT_STATUS		0x0044
#	define R128_CRTC_VBLANK_INT		(1 <<  0)
#	define R128_CRTC_VBLANK_INT_AK		(1 <<  0)
#define R128_GEN_RESET_CNTL		0x00f0
#	define R128_SOFT_RESET_GUI		(1 <<  0)

#define R128_GUI_SCRATCH_REG0		0x15e0
#define R128_GUI_SCRATCH_REG1		0x15e4
#define R128_GUI_SCRATCH_REG2		0x15e8
#define R128_GUI_SCRATCH_REG3		0x15ec
#define R128_GUI_SCRATCH_REG4		0x15f0
#define R128_GUI_SCRATCH_REG5		0x15f4

#define R128_GUI_STAT			0x1740
#	define R128_GUI_FIFOCNT_MASK		0x0fff
#	define R128_GUI_ACTIVE			(1 << 31)

#define R128_MCLK_CNTL			0x000f
#	define R128_FORCE_GCP			(1 << 16)
#	define R128_FORCE_PIPE3D_CP		(1 << 17)
#	define R128_FORCE_RCP			(1 << 18)

#define R128_PC_GUI_CTLSTAT		0x1748
#define R128_PC_NGUI_CTLSTAT		0x0184
#	define R128_PC_FLUSH_GUI		(3 << 0)
#	define R128_PC_RI_GUI			(1 << 2)
#	define R128_PC_FLUSH_ALL		0x00ff
#	define R128_PC_BUSY			(1 << 31)

#define R128_PCI_GART_PAGE		0x017c
#define R128_PRIM_TEX_CNTL_C		0x1cb0

#define R128_SCALE_3D_CNTL		0x1a00
#define R128_SEC_TEX_CNTL_C		0x1d00
#define R128_SEC_TEXTURE_BORDER_COLOR_C	0x1d3c
#define R128_SETUP_CNTL			0x1bc4
#define R128_STEN_REF_MASK_C		0x1d40

#define R128_TEX_CNTL_C			0x1c9c
#	define R128_TEX_CACHE_FLUSH		(1 << 23)

#define R128_WAIT_UNTIL			0x1720
#	define R128_EVENT_CRTC_OFFSET		(1 << 0)
#define R128_WINDOW_XY_OFFSET		0x1bcc

/* CCE registers
 */
#define R128_PM4_BUFFER_OFFSET		0x0700
#define R128_PM4_BUFFER_CNTL		0x0704
#	define R128_PM4_MASK			(15 << 28)
#	define R128_PM4_NONPM4			(0  << 28)
#	define R128_PM4_192PIO			(1  << 28)
#	define R128_PM4_192BM			(2  << 28)
#	define R128_PM4_128PIO_64INDBM		(3  << 28)
#	define R128_PM4_128BM_64INDBM		(4  << 28)
#	define R128_PM4_64PIO_128INDBM		(5  << 28)
#	define R128_PM4_64BM_128INDBM		(6  << 28)
#	define R128_PM4_64PIO_64VCBM_64INDBM	(7  << 28)
#	define R128_PM4_64BM_64VCBM_64INDBM	(8  << 28)
#	define R128_PM4_64PIO_64VCPIO_64INDPIO	(15 << 28)
#	define R128_PM4_BUFFER_CNTL_NOUPDATE	(1  << 27)

#define R128_PM4_BUFFER_WM_CNTL		0x0708
#	define R128_WMA_SHIFT			0
#	define R128_WMB_SHIFT			8
#	define R128_WMC_SHIFT			16
#	define R128_WB_WM_SHIFT			24

#define R128_PM4_BUFFER_DL_RPTR_ADDR	0x070c
#define R128_PM4_BUFFER_DL_RPTR		0x0710
#define R128_PM4_BUFFER_DL_WPTR		0x0714
#	define R128_PM4_BUFFER_DL_DONE		(1 << 31)

#define R128_PM4_VC_FPU_SETUP		0x071c

#define R128_PM4_IW_INDOFF		0x0738
#define R128_PM4_IW_INDSIZE		0x073c

#define R128_PM4_STAT			0x07b8
#	define R128_PM4_FIFOCNT_MASK		0x0fff
#	define R128_PM4_BUSY			(1 << 16)
#	define R128_PM4_GUI_ACTIVE		(1 << 31)

#define R128_PM4_MICROCODE_ADDR		0x07d4
#define R128_PM4_MICROCODE_RADDR	0x07d8
#define R128_PM4_MICROCODE_DATAH	0x07dc
#define R128_PM4_MICROCODE_DATAL	0x07e0

#define R128_PM4_BUFFER_ADDR		0x07f0
#define R128_PM4_MICRO_CNTL		0x07fc
#	define R128_PM4_MICRO_FREERUN		(1 << 30)

#define R128_PM4_FIFO_DATA_EVEN		0x1000
#define R128_PM4_FIFO_DATA_ODD		0x1004

/* CCE command packets
 */
#define R128_CCE_PACKET0		0x00000000
#define R128_CCE_PACKET1		0x40000000
#define R128_CCE_PACKET2		0x80000000
#define R128_CCE_PACKET3		0xC0000000
#	define R128_CNTL_HOSTDATA_BLT		0x00009400
#	define R128_CNTL_PAINT_MULTI		0x00009A00
#	define R128_CNTL_BITBLT_MULTI		0x00009B00
#	define R128_3D_RNDR_GEN_INDX_PRIM	0x00002300

#define R128_CCE_PACKET_MASK		0xC0000000
#define R128_CCE_PACKET_COUNT_MASK	0x3fff0000
#define R128_CCE_PACKET0_REG_MASK	0x000007ff
#define R128_CCE_PACKET1_REG0_MASK	0x000007ff
#define R128_CCE_PACKET1_REG1_MASK	0x003ff800

#define R128_CCE_VC_CNTL_PRIM_TYPE_NONE		0x00000000
#define R128_CCE_VC_CNTL_PRIM_TYPE_POINT	0x00000001
#define R128_CCE_VC_CNTL_PRIM_TYPE_LINE		0x00000002
#define R128_CCE_VC_CNTL_PRIM_TYPE_POLY_LINE	0x00000003
#define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_LIST	0x00000004
#define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_FAN	0x00000005
#define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_STRIP	0x00000006
#define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_TYPE2	0x00000007
#define R128_CCE_VC_CNTL_PRIM_WALK_IND		0x00000010
#define R128_CCE_VC_CNTL_PRIM_WALK_LIST		0x00000020
#define R128_CCE_VC_CNTL_PRIM_WALK_RING		0x00000030
#define R128_CCE_VC_CNTL_NUM_SHIFT		16

#define R128_DATATYPE_VQ		0
#define R128_DATATYPE_CI4		1
#define R128_DATATYPE_CI8		2
#define R128_DATATYPE_ARGB1555		3
#define R128_DATATYPE_RGB565		4
#define R128_DATATYPE_RGB888		5
#define R128_DATATYPE_ARGB8888		6
#define R128_DATATYPE_RGB332		7
#define R128_DATATYPE_Y8		8
#define R128_DATATYPE_RGB8		9
#define R128_DATATYPE_CI16		10
#define R128_DATATYPE_YVYU422		11
#define R128_DATATYPE_VYUY422		12
#define R128_DATATYPE_AYUV444		14
#define R128_DATATYPE_ARGB4444		15

/* Constants */
#define R128_AGP_OFFSET			0x02000000

#define R128_WATERMARK_L		16
#define R128_WATERMARK_M		8
#define R128_WATERMARK_N		8
#define R128_WATERMARK_K		128

#define R128_MAX_USEC_TIMEOUT		100000	/* 100 ms */

#define R128_LAST_FRAME_REG		R128_GUI_SCRATCH_REG0
#define R128_LAST_DISPATCH_REG		R128_GUI_SCRATCH_REG1
#define R128_MAX_VB_AGE			0x7fffffff
#define R128_MAX_VB_VERTS		(0xffff)

#define R128_RING_HIGH_MARK		128

#define R128_PERFORMANCE_BOXES		0

#define R128_PCIGART_TABLE_SIZE         32768

#define R128_READ(reg)		DRM_READ32(  dev_priv->mmio, (reg) )
#define R128_WRITE(reg,val)	DRM_WRITE32( dev_priv->mmio, (reg), (val) )
#define R128_READ8(reg)		DRM_READ8(   dev_priv->mmio, (reg) )
#define R128_WRITE8(reg,val)	DRM_WRITE8(  dev_priv->mmio, (reg), (val) )

#define R128_WRITE_PLL(addr,val)					\
do {									\
	R128_WRITE8(R128_CLOCK_CNTL_INDEX,				\
		    ((addr) & 0x1f) | R128_PLL_WR_EN);			\
	R128_WRITE(R128_CLOCK_CNTL_DATA, (val));			\
} while (0)

#define CCE_PACKET0( reg, n )		(R128_CCE_PACKET0 |		\
					 ((n) << 16) | ((reg) >> 2))
#define CCE_PACKET1( reg0, reg1 )	(R128_CCE_PACKET1 |		\
					 (((reg1) >> 2) << 11) | ((reg0) >> 2))
#define CCE_PACKET2()			(R128_CCE_PACKET2)
#define CCE_PACKET3( pkt, n )		(R128_CCE_PACKET3 |		\
					 (pkt) | ((n) << 16))

static __inline__ void r128_update_ring_snapshot(drm_r128_private_t * dev_priv)
{
	drm_r128_ring_buffer_t *ring = &dev_priv->ring;
	ring->space = (GET_RING_HEAD(dev_priv) - ring->tail) * sizeof(u32);
	if (ring->space <= 0)
		ring->space += ring->size;
}

/* ================================================================
 * Misc helper macros
 */

#define RING_SPACE_TEST_WITH_RETURN( dev_priv )				\
do {									\
	drm_r128_ring_buffer_t *ring = &dev_priv->ring; int i;		\
	if ( ring->space < ring->high_mark ) {				\
		for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {	\
			r128_update_ring_snapshot( dev_priv );		\
			if ( ring->space >= ring->high_mark )		\
				goto __ring_space_done;			\
			DRM_UDELAY(1);				\
		}							\
		DRM_ERROR( "ring space check failed!\n" );		\
		return -EBUSY;				\
	}								\
 __ring_space_done:							\
	;								\
} while (0)

#define VB_AGE_TEST_WITH_RETURN( dev_priv )				\
do {									\
	drm_r128_sarea_t *sarea_priv = dev_priv->sarea_priv;		\
	if ( sarea_priv->last_dispatch >= R128_MAX_VB_AGE ) {		\
		int __ret = r128_do_cce_idle( dev_priv );		\
		if ( __ret ) return __ret;				\
		sarea_priv->last_dispatch = 0;				\
		r128_freelist_reset( dev );				\
	}								\
} while (0)

#define R128_WAIT_UNTIL_PAGE_FLIPPED() do {				\
	OUT_RING( CCE_PACKET0( R128_WAIT_UNTIL, 0 ) );			\
	OUT_RING( R128_EVENT_CRTC_OFFSET );				\
} while (0)

/* ================================================================
 * Ring control
 */

#define R128_VERBOSE	0

#define RING_LOCALS							\
	int write, _nr; unsigned int tail_mask; volatile u32 *ring;

#define BEGIN_RING( n ) do {						\
	if ( R128_VERBOSE ) {						\
		DRM_INFO( "BEGIN_RING( %d ) in %s\n",			\
			   (n), __FUNCTION__ );				\
	}								\
	if ( dev_priv->ring.space <= (n) * sizeof(u32) ) {		\
		COMMIT_RING();						\
		r128_wait_ring( dev_priv, (n) * sizeof(u32) );		\
	}								\
	_nr = n; dev_priv->ring.space -= (n) * sizeof(u32);		\
	ring = dev_priv->ring.start;					\
	write = dev_priv->ring.tail;					\
	tail_mask = dev_priv->ring.tail_mask;				\
} while (0)

/* You can set this to zero if you want.  If the card locks up, you'll
 * need to keep this set.  It works around a bug in early revs of the
 * Rage 128 chipset, where the CCE would read 32 dwords past the end of
 * the ring buffer before wrapping around.
 */
#define R128_BROKEN_CCE	1

#define ADVANCE_RING() do {						\
	if ( R128_VERBOSE ) {						\
		DRM_INFO( "ADVANCE_RING() wr=0x%06x tail=0x%06x\n",	\
			  write, dev_priv->ring.tail );			\
	}								\
	if ( R128_BROKEN_CCE && write < 32 ) {				\
		memcpy( dev_priv->ring.end,				\
			dev_priv->ring.start,				\
			write * sizeof(u32) );				\
	}								\
	if (((dev_priv->ring.tail + _nr) & tail_mask) != write) {	\
		DRM_ERROR( 						\
			"ADVANCE_RING(): mismatch: nr: %x write: %x line: %d\n",	\
			((dev_priv->ring.tail + _nr) & tail_mask),	\
			write, __LINE__);				\
	} else								\
		dev_priv->ring.tail = write;				\
} while (0)

#define COMMIT_RING() do {						\
	if ( R128_VERBOSE ) {						\
		DRM_INFO( "COMMIT_RING() tail=0x%06x\n",		\
			dev_priv->ring.tail );				\
	}								\
	DRM_MEMORYBARRIER();						\
	R128_WRITE( R128_PM4_BUFFER_DL_WPTR, dev_priv->ring.tail );	\
	R128_READ( R128_PM4_BUFFER_DL_WPTR );				\
} while (0)

#define OUT_RING( x ) do {						\
	if ( R128_VERBOSE ) {						\
		DRM_INFO( "   OUT_RING( 0x%08x ) at 0x%x\n",		\
			   (unsigned int)(x), write );			\
	}								\
	ring[write++] = cpu_to_le32( x );				\
	write &= tail_mask;						\
} while (0)

#endif				/* __R128_DRV_H__ */
Commit	Line	Data
1da177e4 LT	1	/* r128_drv.h -- Private header for r128 driver -- linux-c --
1da177e4 LT	2	* Created: Mon Dec 13 09:51:11 1999 by faith@precisioninsight.com
f26c473c	3	*/
83a9e29b DA	4	/*
83a9e29b DA	5	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
1da177e4 LT	6	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
	7	* All rights reserved.
	8	*
	9	* Permission is hereby granted, free of charge, to any person obtaining a
	10	* copy of this software and associated documentation files (the "Software"),
	11	* to deal in the Software without restriction, including without limitation
	12	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	13	* and/or sell copies of the Software, and to permit persons to whom the
	14	* Software is furnished to do so, subject to the following conditions:
	15	*
	16	* The above copyright notice and this permission notice (including the next
	17	* paragraph) shall be included in all copies or substantial portions of the
	18	* Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	23	* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	24	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	25	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	26	* DEALINGS IN THE SOFTWARE.
	27	*
	28	* Authors:
	29	* Rickard E. (Rik) Faith <faith@valinux.com>
	30	* Kevin E. Martin <martin@valinux.com>
	31	* Gareth Hughes <gareth@valinux.com>
96de0e25	32	* Michel Dänzer <daenzerm@student.ethz.ch>
1da177e4 LT	33	*/
	34
	35	#ifndef __R128_DRV_H__
	36	#define __R128_DRV_H__
	37
	38	/* General customization:
	39	*/
	40	#define DRIVER_AUTHOR "Gareth Hughes, VA Linux Systems Inc."
	41
	42	#define DRIVER_NAME "r128"
	43	#define DRIVER_DESC "ATI Rage 128"
	44	#define DRIVER_DATE "20030725"
	45
	46	/* Interface history:
	47	*
	48	* ?? - ??
	49	* 2.4 - Add support for ycbcr textures (no new ioctls)
	50	* 2.5 - Add FLIP ioctl, disable FULLSCREEN.
	51	*/
	52	#define DRIVER_MAJOR 2
	53	#define DRIVER_MINOR 5
	54	#define DRIVER_PATCHLEVEL 0
	55
1da177e4 LT	56	#define GET_RING_HEAD(dev_priv) R128_READ( R128_PM4_BUFFER_DL_RPTR )
	57
	58	typedef struct drm_r128_freelist {
b5e89ed5	59	unsigned int age;
056219e2	60	struct drm_buf *buf;
b5e89ed5 DA	61	struct drm_r128_freelist *next;
b5e89ed5 DA	62	struct drm_r128_freelist *prev;
1da177e4 LT	63	} drm_r128_freelist_t;
	64
	65	typedef struct drm_r128_ring_buffer {
	66	u32 *start;
	67	u32 *end;
	68	int size;
	69	int size_l2qw;
	70
	71	u32 tail;
	72	u32 tail_mask;
	73	int space;
	74
	75	int high_mark;
	76	} drm_r128_ring_buffer_t;
	77
	78	typedef struct drm_r128_private {
	79	drm_r128_ring_buffer_t ring;
	80	drm_r128_sarea_t *sarea_priv;
	81
	82	int cce_mode;
	83	int cce_fifo_size;
	84	int cce_running;
	85
b5e89ed5 DA	86	drm_r128_freelist_t *head;
b5e89ed5 DA	87	drm_r128_freelist_t *tail;
1da177e4 LT	88
	89	int usec_timeout;
	90	int is_pci;
1da177e4 LT	91	unsigned long cce_buffers_offset;
	92
	93	atomic_t idle_count;
	94
	95	int page_flipping;
	96	int current_page;
	97	u32 crtc_offset;
	98	u32 crtc_offset_cntl;
	99
	100	u32 color_fmt;
	101	unsigned int front_offset;
	102	unsigned int front_pitch;
	103	unsigned int back_offset;
	104	unsigned int back_pitch;
	105
	106	u32 depth_fmt;
	107	unsigned int depth_offset;
	108	unsigned int depth_pitch;
	109	unsigned int span_offset;
	110
	111	u32 front_pitch_offset_c;
	112	u32 back_pitch_offset_c;
	113	u32 depth_pitch_offset_c;
	114	u32 span_pitch_offset_c;
	115
	116	drm_local_map_t *sarea;
	117	drm_local_map_t *mmio;
	118	drm_local_map_t *cce_ring;
	119	drm_local_map_t *ring_rptr;
	120	drm_local_map_t *agp_textures;
55910517	121	struct drm_ati_pcigart_info gart_info;
1da177e4 LT	122	} drm_r128_private_t;
	123
	124	typedef struct drm_r128_buf_priv {
	125	u32 age;
	126	int prim;
	127	int discard;
	128	int dispatched;
b5e89ed5	129	drm_r128_freelist_t *list_entry;
1da177e4 LT	130	} drm_r128_buf_priv_t;
1da177e4 LT	131
c153f45f	132	extern struct drm_ioctl_desc r128_ioctls[];
b3a83639 DA	133	extern int r128_max_ioctl;
b3a83639 DA	134
1da177e4	135	/* r128_cce.c */
c153f45f EA	136	extern int r128_cce_init(struct drm_device dev, void data, struct drm_file *file_priv);
	137	extern int r128_cce_start(struct drm_device dev, void data, struct drm_file *file_priv);
	138	extern int r128_cce_stop(struct drm_device dev, void data, struct drm_file *file_priv);
	139	extern int r128_cce_reset(struct drm_device dev, void data, struct drm_file *file_priv);
	140	extern int r128_cce_idle(struct drm_device dev, void data, struct drm_file *file_priv);
	141	extern int r128_engine_reset(struct drm_device dev, void data, struct drm_file *file_priv);
	142	extern int r128_fullscreen(struct drm_device dev, void data, struct drm_file *file_priv);
	143	extern int r128_cce_buffers(struct drm_device dev, void data, struct drm_file *file_priv);
1da177e4	144
eddca551	145	extern void r128_freelist_reset(struct drm_device * dev);
1da177e4	146
b5e89ed5	147	extern int r128_wait_ring(drm_r128_private_t * dev_priv, int n);
1da177e4	148
b5e89ed5	149	extern int r128_do_cce_idle(drm_r128_private_t * dev_priv);
eddca551	150	extern int r128_do_cleanup_cce(struct drm_device * dev);
1da177e4	151
eddca551	152	extern int r128_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence);
1da177e4	153
b5e89ed5	154	extern irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS);
eddca551 DA	155	extern void r128_driver_irq_preinstall(struct drm_device * dev);
	156	extern void r128_driver_irq_postinstall(struct drm_device * dev);
	157	extern void r128_driver_irq_uninstall(struct drm_device * dev);
	158	extern void r128_driver_lastclose(struct drm_device * dev);
6c340eac EA	159	extern void r128_driver_preclose(struct drm_device * dev,
6c340eac EA	160	struct drm_file *file_priv);
1da177e4	161
8ca7c1df DA	162	extern long r128_compat_ioctl(struct file *filp, unsigned int cmd,
	163	unsigned long arg);
	164
1da177e4 LT	165	/* Register definitions, register access macros and drmAddMap constants
	166	* for Rage 128 kernel driver.
	167	*/
	168
	169	#define R128_AUX_SC_CNTL 0x1660
	170	# define R128_AUX1_SC_EN (1 << 0)
	171	# define R128_AUX1_SC_MODE_OR (0 << 1)
	172	# define R128_AUX1_SC_MODE_NAND (1 << 1)
	173	# define R128_AUX2_SC_EN (1 << 2)
	174	# define R128_AUX2_SC_MODE_OR (0 << 3)
	175	# define R128_AUX2_SC_MODE_NAND (1 << 3)
	176	# define R128_AUX3_SC_EN (1 << 4)
	177	# define R128_AUX3_SC_MODE_OR (0 << 5)
	178	# define R128_AUX3_SC_MODE_NAND (1 << 5)
	179	#define R128_AUX1_SC_LEFT 0x1664
	180	#define R128_AUX1_SC_RIGHT 0x1668
	181	#define R128_AUX1_SC_TOP 0x166c
	182	#define R128_AUX1_SC_BOTTOM 0x1670
	183	#define R128_AUX2_SC_LEFT 0x1674
	184	#define R128_AUX2_SC_RIGHT 0x1678
	185	#define R128_AUX2_SC_TOP 0x167c
	186	#define R128_AUX2_SC_BOTTOM 0x1680
	187	#define R128_AUX3_SC_LEFT 0x1684
	188	#define R128_AUX3_SC_RIGHT 0x1688
	189	#define R128_AUX3_SC_TOP 0x168c
	190	#define R128_AUX3_SC_BOTTOM 0x1690
	191
	192	#define R128_BRUSH_DATA0 0x1480
	193	#define R128_BUS_CNTL 0x0030
	194	# define R128_BUS_MASTER_DIS (1 << 6)
	195
	196	#define R128_CLOCK_CNTL_INDEX 0x0008
	197	#define R128_CLOCK_CNTL_DATA 0x000c
	198	# define R128_PLL_WR_EN (1 << 7)
	199	#define R128_CONSTANT_COLOR_C 0x1d34
	200	#define R128_CRTC_OFFSET 0x0224
	201	#define R128_CRTC_OFFSET_CNTL 0x0228
	202	# define R128_CRTC_OFFSET_FLIP_CNTL (1 << 16)
	203
	204	#define R128_DP_GUI_MASTER_CNTL 0x146c
	205	# define R128_GMC_SRC_PITCH_OFFSET_CNTL (1 << 0)
	206	# define R128_GMC_DST_PITCH_OFFSET_CNTL (1 << 1)
	207	# define R128_GMC_BRUSH_SOLID_COLOR (13 << 4)
	208	# define R128_GMC_BRUSH_NONE (15 << 4)
	209	# define R128_GMC_DST_16BPP (4 << 8)
	210	# define R128_GMC_DST_24BPP (5 << 8)
	211	# define R128_GMC_DST_32BPP (6 << 8)
	212	# define R128_GMC_DST_DATATYPE_SHIFT 8
	213	# define R128_GMC_SRC_DATATYPE_COLOR (3 << 12)
	214	# define R128_DP_SRC_SOURCE_MEMORY (2 << 24)
	215	# define R128_DP_SRC_SOURCE_HOST_DATA (3 << 24)
	216	# define R128_GMC_CLR_CMP_CNTL_DIS (1 << 28)
	217	# define R128_GMC_AUX_CLIP_DIS (1 << 29)
	218	# define R128_GMC_WR_MSK_DIS (1 << 30)
	219	# define R128_ROP3_S 0x00cc0000
	220	# define R128_ROP3_P 0x00f00000
	221	#define R128_DP_WRITE_MASK 0x16cc
	222	#define R128_DST_PITCH_OFFSET_C 0x1c80
	223	# define R128_DST_TILE (1 << 31)
	224
	225	#define R128_GEN_INT_CNTL 0x0040
	226	# define R128_CRTC_VBLANK_INT_EN (1 << 0)
	227	#define R128_GEN_INT_STATUS 0x0044
	228	# define R128_CRTC_VBLANK_INT (1 << 0)
229	# define R128_CRTC_VBLANK_INT_AK (1 << 0)
230	#define R128_GEN_RESET_CNTL 0x00f0
231	# define R128_SOFT_RESET_GUI (1 << 0)
232
233	#define R128_GUI_SCRATCH_REG0 0x15e0
234	#define R128_GUI_SCRATCH_REG1 0x15e4
235	#define R128_GUI_SCRATCH_REG2 0x15e8
236	#define R128_GUI_SCRATCH_REG3 0x15ec
237	#define R128_GUI_SCRATCH_REG4 0x15f0
238	#define R128_GUI_SCRATCH_REG5 0x15f4
239
240	#define R128_GUI_STAT 0x1740
241	# define R128_GUI_FIFOCNT_MASK 0x0fff
242	# define R128_GUI_ACTIVE (1 << 31)
243
244	#define R128_MCLK_CNTL 0x000f
245	# define R128_FORCE_GCP (1 << 16)
246	# define R128_FORCE_PIPE3D_CP (1 << 17)
247	# define R128_FORCE_RCP (1 << 18)
248
249	#define R128_PC_GUI_CTLSTAT 0x1748
250	#define R128_PC_NGUI_CTLSTAT 0x0184
251	# define R128_PC_FLUSH_GUI (3 << 0)
252	# define R128_PC_RI_GUI (1 << 2)
253	# define R128_PC_FLUSH_ALL 0x00ff
254	# define R128_PC_BUSY (1 << 31)
255
256	#define R128_PCI_GART_PAGE 0x017c
257	#define R128_PRIM_TEX_CNTL_C 0x1cb0
258
259	#define R128_SCALE_3D_CNTL 0x1a00
260	#define R128_SEC_TEX_CNTL_C 0x1d00
261	#define R128_SEC_TEXTURE_BORDER_COLOR_C 0x1d3c
262	#define R128_SETUP_CNTL 0x1bc4
263	#define R128_STEN_REF_MASK_C 0x1d40
264
265	#define R128_TEX_CNTL_C 0x1c9c
266	# define R128_TEX_CACHE_FLUSH (1 << 23)
267
268	#define R128_WAIT_UNTIL 0x1720
269	# define R128_EVENT_CRTC_OFFSET (1 << 0)
270	#define R128_WINDOW_XY_OFFSET 0x1bcc
271
1da177e4 LT	272	/* CCE registers
	273	*/
	274	#define R128_PM4_BUFFER_OFFSET 0x0700
	275	#define R128_PM4_BUFFER_CNTL 0x0704
	276	# define R128_PM4_MASK (15 << 28)
	277	# define R128_PM4_NONPM4 (0 << 28)
	278	# define R128_PM4_192PIO (1 << 28)
	279	# define R128_PM4_192BM (2 << 28)
	280	# define R128_PM4_128PIO_64INDBM (3 << 28)
	281	# define R128_PM4_128BM_64INDBM (4 << 28)
	282	# define R128_PM4_64PIO_128INDBM (5 << 28)
	283	# define R128_PM4_64BM_128INDBM (6 << 28)
	284	# define R128_PM4_64PIO_64VCBM_64INDBM (7 << 28)
	285	# define R128_PM4_64BM_64VCBM_64INDBM (8 << 28)
	286	# define R128_PM4_64PIO_64VCPIO_64INDPIO (15 << 28)
	287	# define R128_PM4_BUFFER_CNTL_NOUPDATE (1 << 27)
	288
	289	#define R128_PM4_BUFFER_WM_CNTL 0x0708
	290	# define R128_WMA_SHIFT 0
	291	# define R128_WMB_SHIFT 8
	292	# define R128_WMC_SHIFT 16
	293	# define R128_WB_WM_SHIFT 24
	294
	295	#define R128_PM4_BUFFER_DL_RPTR_ADDR 0x070c
	296	#define R128_PM4_BUFFER_DL_RPTR 0x0710
	297	#define R128_PM4_BUFFER_DL_WPTR 0x0714
	298	# define R128_PM4_BUFFER_DL_DONE (1 << 31)
	299
	300	#define R128_PM4_VC_FPU_SETUP 0x071c
	301
	302	#define R128_PM4_IW_INDOFF 0x0738
	303	#define R128_PM4_IW_INDSIZE 0x073c
	304
	305	#define R128_PM4_STAT 0x07b8
	306	# define R128_PM4_FIFOCNT_MASK 0x0fff
	307	# define R128_PM4_BUSY (1 << 16)
	308	# define R128_PM4_GUI_ACTIVE (1 << 31)
	309
	310	#define R128_PM4_MICROCODE_ADDR 0x07d4
	311	#define R128_PM4_MICROCODE_RADDR 0x07d8
	312	#define R128_PM4_MICROCODE_DATAH 0x07dc
	313	#define R128_PM4_MICROCODE_DATAL 0x07e0
	314
	315	#define R128_PM4_BUFFER_ADDR 0x07f0
	316	#define R128_PM4_MICRO_CNTL 0x07fc
	317	# define R128_PM4_MICRO_FREERUN (1 << 30)
	318
	319	#define R128_PM4_FIFO_DATA_EVEN 0x1000
	320	#define R128_PM4_FIFO_DATA_ODD 0x1004
	321
1da177e4 LT	322	/* CCE command packets
	323	*/
	324	#define R128_CCE_PACKET0 0x00000000
	325	#define R128_CCE_PACKET1 0x40000000
	326	#define R128_CCE_PACKET2 0x80000000
	327	#define R128_CCE_PACKET3 0xC0000000
	328	# define R128_CNTL_HOSTDATA_BLT 0x00009400
	329	# define R128_CNTL_PAINT_MULTI 0x00009A00
	330	# define R128_CNTL_BITBLT_MULTI 0x00009B00
	331	# define R128_3D_RNDR_GEN_INDX_PRIM 0x00002300
	332
	333	#define R128_CCE_PACKET_MASK 0xC0000000
	334	#define R128_CCE_PACKET_COUNT_MASK 0x3fff0000
	335	#define R128_CCE_PACKET0_REG_MASK 0x000007ff
	336	#define R128_CCE_PACKET1_REG0_MASK 0x000007ff
	337	#define R128_CCE_PACKET1_REG1_MASK 0x003ff800
	338
	339	#define R128_CCE_VC_CNTL_PRIM_TYPE_NONE 0x00000000
	340	#define R128_CCE_VC_CNTL_PRIM_TYPE_POINT 0x00000001
	341	#define R128_CCE_VC_CNTL_PRIM_TYPE_LINE 0x00000002
	342	#define R128_CCE_VC_CNTL_PRIM_TYPE_POLY_LINE 0x00000003
	343	#define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_LIST 0x00000004
	344	#define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_FAN 0x00000005
	345	#define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_STRIP 0x00000006
	346	#define R128_CCE_VC_CNTL_PRIM_TYPE_TRI_TYPE2 0x00000007
	347	#define R128_CCE_VC_CNTL_PRIM_WALK_IND 0x00000010
	348	#define R128_CCE_VC_CNTL_PRIM_WALK_LIST 0x00000020
	349	#define R128_CCE_VC_CNTL_PRIM_WALK_RING 0x00000030
	350	#define R128_CCE_VC_CNTL_NUM_SHIFT 16
	351
	352	#define R128_DATATYPE_VQ 0
	353	#define R128_DATATYPE_CI4 1
	354	#define R128_DATATYPE_CI8 2
	355	#define R128_DATATYPE_ARGB1555 3
	356	#define R128_DATATYPE_RGB565 4
	357	#define R128_DATATYPE_RGB888 5
	358	#define R128_DATATYPE_ARGB8888 6
	359	#define R128_DATATYPE_RGB332 7
	360	#define R128_DATATYPE_Y8 8
	361	#define R128_DATATYPE_RGB8 9
	362	#define R128_DATATYPE_CI16 10
	363	#define R128_DATATYPE_YVYU422 11
	364	#define R128_DATATYPE_VYUY422 12
	365	#define R128_DATATYPE_AYUV444 14
	366	#define R128_DATATYPE_ARGB4444 15
	367
	368	/* Constants */
	369	#define R128_AGP_OFFSET 0x02000000
	370
	371	#define R128_WATERMARK_L 16
	372	#define R128_WATERMARK_M 8
	373	#define R128_WATERMARK_N 8
	374	#define R128_WATERMARK_K 128
	375
	376	#define R128_MAX_USEC_TIMEOUT 100000 /* 100 ms */
	377
	378	#define R128_LAST_FRAME_REG R128_GUI_SCRATCH_REG0
	379	#define R128_LAST_DISPATCH_REG R128_GUI_SCRATCH_REG1
	380	#define R128_MAX_VB_AGE 0x7fffffff
	381	#define R128_MAX_VB_VERTS (0xffff)
	382
	383	#define R128_RING_HIGH_MARK 128
	384
	385	#define R128_PERFORMANCE_BOXES 0
386
f2b04cd2 DA	387	#define R128_PCIGART_TABLE_SIZE 32768
f2b04cd2 DA	388
1da177e4 LT	389	#define R128_READ(reg) DRM_READ32( dev_priv->mmio, (reg) )
	390	#define R128_WRITE(reg,val) DRM_WRITE32( dev_priv->mmio, (reg), (val) )
	391	#define R128_READ8(reg) DRM_READ8( dev_priv->mmio, (reg) )
	392	#define R128_WRITE8(reg,val) DRM_WRITE8( dev_priv->mmio, (reg), (val) )
	393
	394	#define R128_WRITE_PLL(addr,val) \
	395	do { \
	396	R128_WRITE8(R128_CLOCK_CNTL_INDEX, \
	397	((addr) & 0x1f) \| R128_PLL_WR_EN); \
	398	R128_WRITE(R128_CLOCK_CNTL_DATA, (val)); \
	399	} while (0)
	400
1da177e4 LT	401	#define CCE_PACKET0( reg, n ) (R128_CCE_PACKET0 \| \
	402	((n) << 16) \| ((reg) >> 2))
	403	#define CCE_PACKET1( reg0, reg1 ) (R128_CCE_PACKET1 \| \
	404	(((reg1) >> 2) << 11) \| ((reg0) >> 2))
	405	#define CCE_PACKET2() (R128_CCE_PACKET2)
	406	#define CCE_PACKET3( pkt, n ) (R128_CCE_PACKET3 \| \
	407	(pkt) \| ((n) << 16))
	408
b5e89ed5	409	static __inline__ void r128_update_ring_snapshot(drm_r128_private_t * dev_priv)
1da177e4 LT	410	{
1da177e4 LT	411	drm_r128_ring_buffer_t *ring = &dev_priv->ring;
b5e89ed5 DA	412	ring->space = (GET_RING_HEAD(dev_priv) - ring->tail) * sizeof(u32);
b5e89ed5 DA	413	if (ring->space <= 0)
1da177e4 LT	414	ring->space += ring->size;
	415	}
	416
	417	/* ================================================================
	418	* Misc helper macros
	419	*/
	420
	421	#define RING_SPACE_TEST_WITH_RETURN( dev_priv ) \
	422	do { \
	423	drm_r128_ring_buffer_t *ring = &dev_priv->ring; int i; \
	424	if ( ring->space < ring->high_mark ) { \
	425	for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) { \
	426	r128_update_ring_snapshot( dev_priv ); \
	427	if ( ring->space >= ring->high_mark ) \
	428	goto __ring_space_done; \
	429	DRM_UDELAY(1); \
	430	} \
	431	DRM_ERROR( "ring space check failed!\n" ); \
20caafa6	432	return -EBUSY; \
1da177e4 LT	433	} \
	434	__ring_space_done: \
	435	; \
	436	} while (0)
	437
	438	#define VB_AGE_TEST_WITH_RETURN( dev_priv ) \
	439	do { \
	440	drm_r128_sarea_t *sarea_priv = dev_priv->sarea_priv; \
	441	if ( sarea_priv->last_dispatch >= R128_MAX_VB_AGE ) { \
	442	int __ret = r128_do_cce_idle( dev_priv ); \
	443	if ( __ret ) return __ret; \
	444	sarea_priv->last_dispatch = 0; \
	445	r128_freelist_reset( dev ); \
	446	} \
	447	} while (0)
	448
	449	#define R128_WAIT_UNTIL_PAGE_FLIPPED() do { \
	450	OUT_RING( CCE_PACKET0( R128_WAIT_UNTIL, 0 ) ); \
	451	OUT_RING( R128_EVENT_CRTC_OFFSET ); \
	452	} while (0)
	453
1da177e4 LT	454	/* ================================================================
	455	* Ring control
	456	*/
	457
	458	#define R128_VERBOSE 0
	459
	460	#define RING_LOCALS \
	461	int write, _nr; unsigned int tail_mask; volatile u32 *ring;
	462
	463	#define BEGIN_RING( n ) do { \
	464	if ( R128_VERBOSE ) { \
	465	DRM_INFO( "BEGIN_RING( %d ) in %s\n", \
	466	(n), __FUNCTION__ ); \
	467	} \
	468	if ( dev_priv->ring.space <= (n) * sizeof(u32) ) { \
	469	COMMIT_RING(); \
	470	r128_wait_ring( dev_priv, (n) * sizeof(u32) ); \
	471	} \
	472	_nr = n; dev_priv->ring.space -= (n) * sizeof(u32); \
	473	ring = dev_priv->ring.start; \
	474	write = dev_priv->ring.tail; \
	475	tail_mask = dev_priv->ring.tail_mask; \
	476	} while (0)
	477
	478	/* You can set this to zero if you want. If the card locks up, you'll
	479	* need to keep this set. It works around a bug in early revs of the
	480	* Rage 128 chipset, where the CCE would read 32 dwords past the end of
	481	* the ring buffer before wrapping around.
	482	*/
	483	#define R128_BROKEN_CCE 1
	484
	485	#define ADVANCE_RING() do { \
	486	if ( R128_VERBOSE ) { \
	487	DRM_INFO( "ADVANCE_RING() wr=0x%06x tail=0x%06x\n", \
	488	write, dev_priv->ring.tail ); \
	489	} \
	490	if ( R128_BROKEN_CCE && write < 32 ) { \
	491	memcpy( dev_priv->ring.end, \
	492	dev_priv->ring.start, \
	493	write * sizeof(u32) ); \
	494	} \
	495	if (((dev_priv->ring.tail + _nr) & tail_mask) != write) { \
	496	DRM_ERROR( \
	497	"ADVANCE_RING(): mismatch: nr: %x write: %x line: %d\n", \
	498	((dev_priv->ring.tail + _nr) & tail_mask), \
	499	write, __LINE__); \
	500	} else \
	501	dev_priv->ring.tail = write; \
	502	} while (0)
	503
	504	#define COMMIT_RING() do { \
	505	if ( R128_VERBOSE ) { \
	506	DRM_INFO( "COMMIT_RING() tail=0x%06x\n", \
	507	dev_priv->ring.tail ); \
	508	} \
	509	DRM_MEMORYBARRIER(); \
	510	R128_WRITE( R128_PM4_BUFFER_DL_WPTR, dev_priv->ring.tail ); \
	511	R128_READ( R128_PM4_BUFFER_DL_WPTR ); \
	512	} while (0)
	513
	514	#define OUT_RING( x ) do { \
	515	if ( R128_VERBOSE ) { \
	516	DRM_INFO( " OUT_RING( 0x%08x ) at 0x%x\n", \
	517	(unsigned int)(x), write ); \
518	} \
519	ring[write++] = cpu_to_le32( x ); \
520	write &= tail_mask; \
521	} while (0)
522
b5e89ed5	523	#endif /* __R128_DRV_H__ */