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 1.4 2003/10/23 18:08:56 jhb Exp $ 27 * $DragonFly: src/sys/sys/agpio.h,v 1.5 2007/09/12 08:31:44 hasso 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 #ifndef _SYS_IOCCOM_H_ 38 #include <sys/ioccom.h> 39 #endif 40 41 /* 42 * The AGP gatt uses 4k pages irrespective of the host page size. 43 */ 44 #define AGP_PAGE_SIZE 4096 45 #define AGP_PAGE_SHIFT 12 46 47 /* 48 * Macros to manipulate AGP mode words. 49 * 50 * SBA = Sideband Address Port 51 * FW = Fast Writes 52 */ 53 #define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24) 54 #define AGP_MODE_GET_ARQSZ(x) (((x) & 0x0000e000U) >> 13) 55 #define AGP_MODE_GET_CAL(x) (((x) & 0x00001c00U) >> 10) 56 #define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9) 57 #define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8) 58 #define AGP_MODE_GET_GART_64(x) (((x) & 0x00000080U) >> 7) 59 #define AGP_MODE_GET_OVER_4G(x) (((x) & 0x00000020U) >> 5) 60 #define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4) 61 #define AGP_MODE_GET_MODE_3(x) (((x) & 0x00000008U) >> 3) 62 #define AGP_MODE_GET_RATE(x) ((x) & 0x00000007U) 63 #define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24)) 64 #define AGP_MODE_SET_ARQSZ(x,v) (((x) & ~0x0000e000U) | ((v) << 13)) 65 #define AGP_MODE_SET_CAL(x,v) (((x) & ~0x00001c00U) | ((v) << 10)) 66 #define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9)) 67 #define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8)) 68 #define AGP_MODE_SET_GART_64(x,v) (((x) & ~0x00000080U) | ((v) << 7)) 69 #define AGP_MODE_SET_OVER_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5)) 70 #define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4)) 71 #define AGP_MODE_SET_MODE_3(x,v) (((x) & ~0x00000008U) | ((v) << 3)) 72 #define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000007U) | (v)) 73 #define AGP_MODE_V2_RATE_1x 0x00000001 74 #define AGP_MODE_V2_RATE_2x 0x00000002 75 #define AGP_MODE_V2_RATE_4x 0x00000004 76 #define AGP_MODE_V3_RATE_4x 0x00000001 77 #define AGP_MODE_V3_RATE_8x 0x00000002 78 #define AGP_MODE_V3_RATE_RSVD 0x00000004 79 80 /* XXX: Compat */ 81 #define AGP_MODE_GET_4G(x) AGP_MODE_GET_OVER_4G(x) 82 #define AGP_MODE_SET_4G(x) AGP_MODE_SET_OVER_4G(x) 83 #define AGP_MODE_RATE_1x AGP_MODE_V2_RATE_1x 84 #define AGP_MODE_RATE_2x AGP_MODE_V2_RATE_2x 85 #define AGP_MODE_RATE_4x AGP_MODE_V2_RATE_4x 86 87 #define AGPIOC_BASE 'A' 88 #define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info) 89 #define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1) 90 #define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2) 91 #define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup) 92 #if 0 93 #define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region) 94 #define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region) 95 #endif 96 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate) 97 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int) 98 #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind) 99 #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind) 100 101 typedef struct _agp_version { 102 u_int16_t major; 103 u_int16_t minor; 104 } agp_version; 105 106 typedef struct _agp_info { 107 agp_version version; /* version of the driver */ 108 u_int32_t bridge_id; /* bridge vendor/device */ 109 u_int32_t agp_mode; /* mode info of bridge */ 110 off_t aper_base; /* base of aperture */ 111 size_t aper_size; /* size of aperture */ 112 size_t pg_total; /* max pages (swap + system) */ 113 size_t pg_system; /* max pages (system) */ 114 size_t pg_used; /* current pages used */ 115 } agp_info; 116 117 typedef struct _agp_setup { 118 u_int32_t agp_mode; /* mode info of bridge */ 119 } agp_setup; 120 121 #if 0 122 /* 123 * The "prot" down below needs still a "sleep" flag somehow ... 124 */ 125 typedef struct _agp_segment { 126 off_t pg_start; /* starting page to populate */ 127 size_t pg_count; /* number of pages */ 128 int prot; /* prot flags for mmap */ 129 } agp_segment; 130 131 typedef struct _agp_region { 132 pid_t pid; /* pid of process */ 133 size_t seg_count; /* number of segments */ 134 struct _agp_segment *seg_list; 135 } agp_region; 136 #endif 137 138 typedef struct _agp_allocate { 139 int key; /* tag of allocation */ 140 size_t pg_count; /* number of pages */ 141 u_int32_t type; /* 0 == normal, other devspec */ 142 u_int32_t physical; /* device specific (some devices 143 * need a phys address of the 144 * actual page behind the gatt 145 * table) */ 146 } agp_allocate; 147 148 typedef struct _agp_bind { 149 int key; /* tag of allocation */ 150 off_t pg_start; /* starting page to populate */ 151 } agp_bind; 152 153 typedef struct _agp_unbind { 154 int key; /* tag of allocation */ 155 u_int32_t priority; /* priority for paging out */ 156 } agp_unbind; 157 158 #endif /* !_SYS_AGPIO_H_ */ 159