1 /*- 2 * Copyright (c) 2000 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/sys/agpio.h,v 1.1.2.2 2001/12/20 10:36:57 ru Exp $ 27 * $DragonFly: src/sys/sys/agpio.h,v 1.4 2006/05/20 02:42:13 dillon Exp $ 28 */ 29 30 #ifndef _SYS_AGPIO_H_ 31 #define _SYS_AGPIO_H_ 32 33 #ifndef _SYS_TYPES_H_ 34 #include <sys/types.h> 35 #endif 36 37 /* 38 * The AGP gatt uses 4k pages irrespective of the host page size. 39 */ 40 #define AGP_PAGE_SIZE 4096 41 #define AGP_PAGE_SHIFT 12 42 43 /* 44 * Macros to manipulate AGP mode words. 45 * 46 * SBA = Sideband Address Port 47 * FW = Fast Writes 48 */ 49 #define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24) 50 #define AGP_MODE_GET_ARQSZ(x) (((x) & 0x0000e000U) >> 13) 51 #define AGP_MODE_GET_CAL(x) (((x) & 0x00001c00U) >> 10) 52 #define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9) 53 #define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8) 54 #define AGP_MODE_GET_GART_64(x) (((x) & 0x00000080U) >> 7) 55 #define AGP_MODE_GET_OVER_4G(x) (((x) & 0x00000020U) >> 5) 56 #define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4) 57 #define AGP_MODE_GET_MODE_3(x) (((x) & 0x00000008U) >> 3) 58 #define AGP_MODE_GET_RATE(x) ((x) & 0x00000007U) 59 #define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24)) 60 #define AGP_MODE_SET_ARQSZ(x,v) (((x) & ~0x0000e000U) | ((v) << 13)) 61 #define AGP_MODE_SET_CAL(x,v) (((x) & ~0x00001c00U) | ((v) << 10)) 62 #define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9)) 63 #define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8)) 64 #define AGP_MODE_SET_GART_64(x,v) (((x) & ~0x00000080U) | ((v) << 7)) 65 #define AGP_MODE_SET_OVER_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5)) 66 #define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4)) 67 #define AGP_MODE_SET_MODE_3(x,v) (((x) & ~0x00000008U) | ((v) << 3)) 68 #define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000007U) | (v)) 69 #define AGP_MODE_V2_RATE_1x 0x00000001 70 #define AGP_MODE_V2_RATE_2x 0x00000002 71 #define AGP_MODE_V2_RATE_4x 0x00000004 72 #define AGP_MODE_V3_RATE_4x 0x00000001 73 #define AGP_MODE_V3_RATE_8x 0x00000002 74 #define AGP_MODE_V3_RATE_RSVD 0x00000004 75 76 /* XXX: Compat */ 77 #define AGP_MODE_GET_4G(x) AGP_MODE_GET_OVER_4G(x) 78 #define AGP_MODE_SET_4G(x) AGP_MODE_SET_OVER_4G(x) 79 #define AGP_MODE_RATE_1x AGP_MODE_V2_RATE_1x 80 #define AGP_MODE_RATE_2x AGP_MODE_V2_RATE_2x 81 #define AGP_MODE_RATE_4x AGP_MODE_V2_RATE_4x 82 83 #define AGPIOC_BASE 'A' 84 #define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info) 85 #define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1) 86 #define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2) 87 #define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup) 88 #if 0 89 #define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region) 90 #define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region) 91 #endif 92 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate) 93 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int) 94 #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind) 95 #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind) 96 97 typedef struct _agp_version { 98 u_int16_t major; 99 u_int16_t minor; 100 } agp_version; 101 102 typedef struct _agp_info { 103 agp_version version; /* version of the driver */ 104 u_int32_t bridge_id; /* bridge vendor/device */ 105 u_int32_t agp_mode; /* mode info of bridge */ 106 off_t aper_base; /* base of aperture */ 107 size_t aper_size; /* size of aperture */ 108 size_t pg_total; /* max pages (swap + system) */ 109 size_t pg_system; /* max pages (system) */ 110 size_t pg_used; /* current pages used */ 111 } agp_info; 112 113 typedef struct _agp_setup { 114 u_int32_t agp_mode; /* mode info of bridge */ 115 } agp_setup; 116 117 #if 0 118 /* 119 * The "prot" down below needs still a "sleep" flag somehow ... 120 */ 121 typedef struct _agp_segment { 122 off_t pg_start; /* starting page to populate */ 123 size_t pg_count; /* number of pages */ 124 int prot; /* prot flags for mmap */ 125 } agp_segment; 126 127 typedef struct _agp_region { 128 pid_t pid; /* pid of process */ 129 size_t seg_count; /* number of segments */ 130 struct _agp_segment *seg_list; 131 } agp_region; 132 #endif 133 134 typedef struct _agp_allocate { 135 int key; /* tag of allocation */ 136 size_t pg_count; /* number of pages */ 137 u_int32_t type; /* 0 == normal, other devspec */ 138 u_int32_t physical; /* device specific (some devices 139 * need a phys address of the 140 * actual page behind the gatt 141 * table) */ 142 } agp_allocate; 143 144 typedef struct _agp_bind { 145 int key; /* tag of allocation */ 146 off_t pg_start; /* starting page to populate */ 147 } agp_bind; 148 149 typedef struct _agp_unbind { 150 int key; /* tag of allocation */ 151 u_int32_t priority; /* priority for paging out */ 152 } agp_unbind; 153 154 #endif /* !_SYS_AGPIO_H_ */ 155