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 1.2 2003/06/17 04:28:58 dillon 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 #define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24) 43 #define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9) 44 #define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8) 45 #define AGP_MODE_GET_4G(x) (((x) & 0x00000020U) >> 5) 46 #define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4) 47 #define AGP_MODE_GET_RATE(x) ((x) & 0x00000007U) 48 #define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24)) 49 #define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9)) 50 #define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8)) 51 #define AGP_MODE_SET_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5)) 52 #define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4)) 53 #define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000007U) | (v)) 54 #define AGP_MODE_RATE_1x 0x00000001 55 #define AGP_MODE_RATE_2x 0x00000002 56 #define AGP_MODE_RATE_4x 0x00000004 57 58 #define AGPIOC_BASE 'A' 59 #define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info) 60 #define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1) 61 #define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2) 62 #define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup) 63 #if 0 64 #define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region) 65 #define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region) 66 #endif 67 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate) 68 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int) 69 #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind) 70 #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind) 71 72 typedef struct _agp_version { 73 u_int16_t major; 74 u_int16_t minor; 75 } agp_version; 76 77 typedef struct _agp_info { 78 agp_version version; /* version of the driver */ 79 u_int32_t bridge_id; /* bridge vendor/device */ 80 u_int32_t agp_mode; /* mode info of bridge */ 81 off_t aper_base; /* base of aperture */ 82 size_t aper_size; /* size of aperture */ 83 size_t pg_total; /* max pages (swap + system) */ 84 size_t pg_system; /* max pages (system) */ 85 size_t pg_used; /* current pages used */ 86 } agp_info; 87 88 typedef struct _agp_setup { 89 u_int32_t agp_mode; /* mode info of bridge */ 90 } agp_setup; 91 92 #if 0 93 /* 94 * The "prot" down below needs still a "sleep" flag somehow ... 95 */ 96 typedef struct _agp_segment { 97 off_t pg_start; /* starting page to populate */ 98 size_t pg_count; /* number of pages */ 99 int prot; /* prot flags for mmap */ 100 } agp_segment; 101 102 typedef struct _agp_region { 103 pid_t pid; /* pid of process */ 104 size_t seg_count; /* number of segments */ 105 struct _agp_segment *seg_list; 106 } agp_region; 107 #endif 108 109 typedef struct _agp_allocate { 110 int key; /* tag of allocation */ 111 size_t pg_count; /* number of pages */ 112 u_int32_t type; /* 0 == normal, other devspec */ 113 u_int32_t physical; /* device specific (some devices 114 * need a phys address of the 115 * actual page behind the gatt 116 * table) */ 117 } agp_allocate; 118 119 typedef struct _agp_bind { 120 int key; /* tag of allocation */ 121 off_t pg_start; /* starting page to populate */ 122 } agp_bind; 123 124 typedef struct _agp_unbind { 125 int key; /* tag of allocation */ 126 u_int32_t priority; /* priority for paging out */ 127 } agp_unbind; 128 129 #endif /* !_SYS_AGPIO_H_ */ 130