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      1 /*
      2  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
      3  * Use is subject to license terms.
      4  */
      5 
      6 /*
      7  * Copyright (c) 2000 Doug Rabson
      8  * All rights reserved.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  */
     32 
     33 #ifndef	_SYS_AGPGART_H
     34 #define	_SYS_AGPGART_H
     35 
     36 #pragma ident	"@(#)agpgart.h	1.2	06/09/28 SMI"
     37 
     38 #ifdef __cplusplus
     39 extern "C" {
     40 #endif
     41 
     42 #define	AGP_NORMAL	0	/* mapped to user land, no cache */
     43 
     44 typedef struct _agp_version {
     45 	uint16_t	agpv_major;
     46 	uint16_t	agpv_minor;
     47 } agp_version_t;
     48 
     49 
     50 typedef struct	_agp_info {
     51 	agp_version_t	agpi_version;
     52 	uint32_t	agpi_devid;	/* bridge vendor + device */
     53 	uint32_t	agpi_mode;	/* mode of brdige */
     54 	ulong_t		agpi_aperbase;	/* base of aperture */
     55 	size_t		agpi_apersize;	/* aperture range size */
     56 	uint32_t	agpi_pgtotal;	/* max number of pages in aperture */
     57 	uint32_t	agpi_pgsystem;	/* same as pg_total */
     58 	uint32_t	agpi_pgused;	/* NUMBER of currently used pages */
     59 } agp_info_t;
     60 
     61 typedef struct _agp_setup {
     62 	uint32_t	agps_mode;
     63 } agp_setup_t;
     64 
     65 typedef struct _agp_allocate {
     66 	int32_t		agpa_key;
     67 	uint32_t	agpa_pgcount;
     68 	uint32_t	agpa_type;
     69 	uint32_t	agpa_physical;	/* for i810 only, private */
     70 } agp_allocate_t;
     71 
     72 typedef struct _agp_bind {
     73 	int32_t		agpb_key;
     74 	uint32_t	agpb_pgstart;
     75 } agp_bind_t;
     76 
     77 typedef struct _agp_unbind {
     78 	int32_t		agpu_key;
     79 	uint32_t	agpu_pri;	/* no use in solaris */
     80 } agp_unbind_t;
     81 
     82 #define	AGPIOC_BASE		'G'
     83 #define	AGPIOC_INFO		_IOR(AGPIOC_BASE, 0, 100)
     84 #define	AGPIOC_ACQUIRE		_IO(AGPIOC_BASE, 1)
     85 #define	AGPIOC_RELEASE		_IO(AGPIOC_BASE, 2)
     86 #define	AGPIOC_SETUP		_IOW(AGPIOC_BASE, 3, agp_setup_t)
     87 #define	AGPIOC_ALLOCATE		_IOWR(AGPIOC_BASE, 4, agp_allocate_t)
     88 #define	AGPIOC_DEALLOCATE	_IOW(AGPIOC_BASE, 5, int)
     89 #define	AGPIOC_BIND		_IOW(AGPIOC_BASE, 6, agp_bind_t)
     90 #define	AGPIOC_UNBIND		_IOW(AGPIOC_BASE, 7, agp_unbind_t)
     91 #define	AGPIOC_IOREMAP		_IO(AGPIOC_BASE, 8)
     92 #define	AGPIOC_IOREMAP_FREE	_IO(AGPIOC_BASE, 9)
     93 #define	AGPIOC_READ		_IO(AGPIOC_BASE, 10)
     94 #define	AGPIOC_WRITE		_IO(AGPIOC_BASE, 11)
     95 
     96 /* AGP status register bits definition */
     97 #define	AGPSTAT_RQ_MASK		0xff000000	/* target only */
     98 #define	AGPSTAT_SBA		(0x1 << 9)	/* always 1 for 3.0 */
     99 #define	AGPSTAT_OVER4G		(0x1 << 5)
    100 #define	AGPSTAT_FW		(0x1 << 4)
    101 #define	AGPSTAT_RATE_MASK	0x7
    102 /* rate for 2.0 mode */
    103 #define	AGP2_RATE_1X		0x1
    104 #define	AGP2_RATE_2X		0x2
    105 #define	AGP2_RATE_4X		0x4
    106 /* AGP 3.0 only bits */
    107 #define	AGPSTAT_ARQSZ_MASK	(0x7 << 13)	/* target only */
    108 #define	AGPSTAT_CAL_MASK	(0x7 << 10)
    109 #define	AGPSTAT_GART64B		(0x1 << 7)	/* target only */
    110 #define	AGPSTAT_MODE3		(0x1 << 3)
    111 /* Rate for 3.0 mode */
    112 #define	AGP3_RATE_4X		0x1
    113 #define	AGP3_RATE_8X		0x2
    114 
    115 /* AGP command register bits definition */
    116 #define	AGPCMD_RQ_MASK		0xff000000	/* master only */
    117 #define	AGPCMD_SBAEN		(0x1 << 9)	/* must be 1 for 3.0 */
    118 #define	AGPCMD_AGPEN		(0x1 << 8)
    119 #define	AGPCMD_OVER4GEN		(0x1 << 5)
    120 #define	AGPCMD_FWEN		(0x1 << 4)
    121 #define	AGPCMD_RATE_MASK	0x7
    122 /* AGP 3.0 only bits */
    123 #define	AGP3_CMD_ARQSZ_MASK	(0x7 << 13)	/* master only */
    124 #define	AGP3_CMD_CAL_MASK	(0x7 << 10)	/* target only */
    125 #define	AGP3_CMD_GART64BEN	(0x1 << 7)	/* target only */
    126 
    127 #define	AGP_DEVICE	"/dev/agpgart"
    128 
    129 #ifdef __cplusplus
    130 }
    131 #endif
    132 
    133 #endif /* _SYS_AGPGART_H */
    134