1 /* $NetBSD: agpio.h,v 1.1 2001/09/10 10:01:00 fvdl Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Doug Rabson 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/sys/agpio.h,v 1.1 2000/06/09 16:04:30 dfr Exp $ 29 */ 30 31 #ifndef _SYS_AGPIO_H_ 32 #define _SYS_AGPIO_H_ 33 34 /* 35 * The AGP gatt uses 4k pages irrespective of the host page size. 36 */ 37 #define AGP_PAGE_SIZE 4096 38 #define AGP_PAGE_SHIFT 12 39 40 /* 41 * Macros to manipulate AGP mode words. 42 */ 43 #define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24) 44 #define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9) 45 #define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8) 46 #define AGP_MODE_GET_4G(x) (((x) & 0x00000020U) >> 5) 47 #define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4) 48 #define AGP_MODE_GET_RATE(x) ((x) & 0x00000003U) 49 #define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24)) 50 #define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9)) 51 #define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8)) 52 #define AGP_MODE_SET_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5)) 53 #define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4)) 54 #define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000003U) | (v)) 55 #define AGP_MODE_RATE_1x 0x00000001 56 #define AGP_MODE_RATE_2x 0x00000002 57 #define AGP_MODE_RATE_4x 0x00000004 58 59 #define AGPIOC_BASE 'A' 60 #define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info) 61 #define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1) 62 #define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2) 63 #define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup) 64 #if 0 65 #define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region) 66 #define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region) 67 #endif 68 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate) 69 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int) 70 #define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind) 71 #define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind) 72 73 typedef struct _agp_version { 74 u_int16_t major; 75 u_int16_t minor; 76 } agp_version; 77 78 typedef struct _agp_info { 79 agp_version version; /* version of the driver */ 80 u_int32_t bridge_id; /* bridge vendor/device */ 81 u_int32_t agp_mode; /* mode info of bridge */ 82 off_t aper_base; /* base of aperture */ 83 size_t aper_size; /* size of aperture */ 84 size_t pg_total; /* max pages (swap + system) */ 85 size_t pg_system; /* max pages (system) */ 86 size_t pg_used; /* current pages used */ 87 } agp_info; 88 89 typedef struct _agp_setup { 90 u_int32_t agp_mode; /* mode info of bridge */ 91 } agp_setup; 92 93 #if 0 94 /* 95 * The "prot" down below needs still a "sleep" flag somehow ... 96 */ 97 typedef struct _agp_segment { 98 off_t pg_start; /* starting page to populate */ 99 size_t pg_count; /* number of pages */ 100 int prot; /* prot flags for mmap */ 101 } agp_segment; 102 103 typedef struct _agp_region { 104 pid_t pid; /* pid of process */ 105 size_t seg_count; /* number of segments */ 106 struct _agp_segment *seg_list; 107 } agp_region; 108 #endif 109 110 typedef struct _agp_allocate { 111 int key; /* tag of allocation */ 112 size_t pg_count; /* number of pages */ 113 u_int32_t type; /* 0 == normal, other devspec */ 114 paddr_t physical; /* device specific (some devices 115 * need a phys address of the 116 * actual page behind the gatt 117 * table) */ 118 } agp_allocate; 119 120 typedef struct _agp_bind { 121 int key; /* tag of allocation */ 122 off_t pg_start; /* starting page to populate */ 123 } agp_bind; 124 125 typedef struct _agp_unbind { 126 int key; /* tag of allocation */ 127 u_int32_t priority; /* priority for paging out */ 128 } agp_unbind; 129 130 #endif /* !_SYS_AGPIO_H_ */ 131