| 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 1.3 2003/12/09 23:43:36 drhodus Exp $ |
| 28 | */ |
| 29 | |
| 30 | #ifndef _SYS_AGPIO_H_ |
| 31 | #define _SYS_AGPIO_H_ |
| 32 | |
| 33 | /* |
| 34 | * The AGP gatt uses 4k pages irrespective of the host page size. |
| 35 | */ |
| 36 | #define AGP_PAGE_SIZE 4096 |
| 37 | #define AGP_PAGE_SHIFT 12 |
| 38 | |
| 39 | /* |
| 40 | * Macros to manipulate AGP mode words. |
| 41 | * |
| 42 | * SBA = Sideband Address Port |
| 43 | * FW = Fast Writes |
| 44 | */ |
| 45 | #define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24) |
| 46 | #define AGP_MODE_GET_ARQSZ(x) (((x) & 0x0000e000U) >> 13) |
| 47 | #define AGP_MODE_GET_CAL(x) (((x) & 0x00001c00U) >> 10) |
| 48 | #define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9) |
| 49 | #define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8) |
| 50 | #define AGP_MODE_GET_GART_64(x) (((x) & 0x00000080U) >> 7) |
| 51 | #define AGP_MODE_GET_OVER_4G(x) (((x) & 0x00000020U) >> 5) |
| 52 | #define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4) |
| 53 | #define AGP_MODE_GET_MODE_3(x) (((x) & 0x00000008U) >> 3) |
| 54 | #define AGP_MODE_GET_RATE(x) ((x) & 0x00000007U) |
| 55 | #define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24)) |
| 56 | #define AGP_MODE_SET_ARQSZ(x,v) (((x) & ~0x0000e000U) | ((v) << 13)) |
| 57 | #define AGP_MODE_SET_CAL(x,v) (((x) & ~0x00001c00U) | ((v) << 10)) |
| 58 | #define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9)) |
| 59 | #define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8)) |
| 60 | #define AGP_MODE_SET_GART_64(x,v) (((x) & ~0x00000080U) | ((v) << 7)) |
| 61 | #define AGP_MODE_SET_OVER_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5)) |
| 62 | #define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4)) |
| 63 | #define AGP_MODE_SET_MODE_3(x,v) (((x) & ~0x00000008U) | ((v) << 3)) |
| 64 | #define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000007U) | (v)) |
| 65 | #define AGP_MODE_V2_RATE_1x 0x00000001 |
| 66 | #define AGP_MODE_V2_RATE_2x 0x00000002 |
| 67 | #define AGP_MODE_V2_RATE_4x 0x00000004 |
| 68 | #define AGP_MODE_V3_RATE_4x 0x00000001 |
| 69 | #define AGP_MODE_V3_RATE_8x 0x00000002 |
| 70 | #define AGP_MODE_V3_RATE_RSVD 0x00000004 |
| 71 | |
| 72 | /* XXX: Compat */ |
| 73 | #define AGP_MODE_GET_4G(x) AGP_MODE_GET_OVER_4G(x) |
| 74 | #define AGP_MODE_SET_4G(x) AGP_MODE_SET_OVER_4G(x) |
| 75 | #define AGP_MODE_RATE_1x AGP_MODE_V2_RATE_1x |
| 76 | #define AGP_MODE_RATE_2x AGP_MODE_V2_RATE_2x |
| 77 | #define AGP_MODE_RATE_4x AGP_MODE_V2_RATE_4x |
| 78 | |
| 79 | #define AGPIOC_BASE 'A' |
| 80 | #define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info) |
| 81 | #define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1) |
| 82 | #define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2) |
| 83 | #define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup) |
| 84 | #if 0 |
| 85 | #define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region) |
| 86 | #define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region) |
| 87 | #endif |
| 88 | #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate) |
| 89 | #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int) |
| 90 | #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind) |
| 91 | #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind) |
| 92 | |
| 93 | typedef struct _agp_version { |
| 94 | u_int16_t major; |
| 95 | u_int16_t minor; |
| 96 | } agp_version; |
| 97 | |
| 98 | typedef struct _agp_info { |
| 99 | agp_version version; /* version of the driver */ |
| 100 | u_int32_t bridge_id; /* bridge vendor/device */ |
| 101 | u_int32_t agp_mode; /* mode info of bridge */ |
| 102 | off_t aper_base; /* base of aperture */ |
| 103 | size_t aper_size; /* size of aperture */ |
| 104 | size_t pg_total; /* max pages (swap + system) */ |
| 105 | size_t pg_system; /* max pages (system) */ |
| 106 | size_t pg_used; /* current pages used */ |
| 107 | } agp_info; |
| 108 | |
| 109 | typedef struct _agp_setup { |
| 110 | u_int32_t agp_mode; /* mode info of bridge */ |
| 111 | } agp_setup; |
| 112 | |
| 113 | #if 0 |
| 114 | /* |
| 115 | * The "prot" down below needs still a "sleep" flag somehow ... |
| 116 | */ |
| 117 | typedef struct _agp_segment { |
| 118 | off_t pg_start; /* starting page to populate */ |
| 119 | size_t pg_count; /* number of pages */ |
| 120 | int prot; /* prot flags for mmap */ |
| 121 | } agp_segment; |
| 122 | |
| 123 | typedef struct _agp_region { |
| 124 | pid_t pid; /* pid of process */ |
| 125 | size_t seg_count; /* number of segments */ |
| 126 | struct _agp_segment *seg_list; |
| 127 | } agp_region; |
| 128 | #endif |
| 129 | |
| 130 | typedef struct _agp_allocate { |
| 131 | int key; /* tag of allocation */ |
| 132 | size_t pg_count; /* number of pages */ |
| 133 | u_int32_t type; /* 0 == normal, other devspec */ |
| 134 | u_int32_t physical; /* device specific (some devices |
| 135 | * need a phys address of the |
| 136 | * actual page behind the gatt |
| 137 | * table) */ |
| 138 | } agp_allocate; |
| 139 | |
| 140 | typedef struct _agp_bind { |
| 141 | int key; /* tag of allocation */ |
| 142 | off_t pg_start; /* starting page to populate */ |
| 143 | } agp_bind; |
| 144 | |
| 145 | typedef struct _agp_unbind { |
| 146 | int key; /* tag of allocation */ |
| 147 | u_int32_t priority; /* priority for paging out */ |
| 148 | } agp_unbind; |
| 149 | |
| 150 | #endif /* !_SYS_AGPIO_H_ */ |