1 /* $NetBSD: agpio.h,v 1.13 2021/12/19 01:51:17 riastradh 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 #include <sys/types.h> 35 #include <sys/ioccom.h> 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 #define AGP_MODE_GET_RQ(x) __SHIFTOUT((x), AGP_MODE_RQ) 47 #define AGP_MODE_GET_ARQSZ(x) __SHIFTOUT((x), AGP_MODE_ARQSZ) 48 #define AGP_MODE_GET_CAL(x) __SHIFTOUT((x), AGP_MODE_CAL) 49 #define AGP_MODE_GET_SBA(x) __SHIFTOUT((x), AGP_MODE_SBA) 50 #define AGP_MODE_GET_AGP(x) __SHIFTOUT((x), AGP_MODE_AGP) 51 #define AGP_MODE_GET_4G(x) __SHIFTOUT((x), AGP_MODE_4G) 52 #define AGP_MODE_GET_FW(x) __SHIFTOUT((x), AGP_MODE_FW) 53 #define AGP_MODE_GET_MODE_3(x) __SHIFTOUT((x), AGP_MODE_MODE_3) 54 #define AGP_MODE_GET_RATE(x) __SHIFTOUT((x), AGP_MODE_RATE) 55 #define AGP_MODE_SET_RQ(x, v) (((x) & ~AGP_MODE_RQ) \ 56 | __SHIFTIN((v), AGP_MODE_RQ)) 57 #define AGP_MODE_SET_ARQSZ(x, v) (((x) & ~AGP_MODE_ARQSZ) \ 58 | __SHIFTIN((v), AGP_MODE_ARQSZ)) 59 #define AGP_MODE_SET_CAL(x, v) (((x) & ~AGP_MODE_CAL) \ 60 | __SHIFTIN((v), ~AGP_MODE_CAL)) 61 #define AGP_MODE_SET_SBA(x, v) (((x) & ~AGP_MODE_SBA) \ 62 | __SHIFTIN((v), AGP_MODE_SBA)) 63 #define AGP_MODE_SET_AGP(x, v) (((x) & ~AGP_MODE_AGP) \ 64 | __SHIFTIN((v), AGP_MODE_AGP)) 65 #define AGP_MODE_SET_4G(x, v) (((x) & ~AGP_MODE_4G) \ 66 | __SHIFTIN((v), AGP_MODE_4G)) 67 #define AGP_MODE_SET_FW(x, v) (((x) & ~AGP_MODE_FW) \ 68 | __SHIFTIN((v), AGP_MODE_FW)) 69 #define AGP_MODE_SET_MODE_3(x, v) (((x) & ~AGP_MODE_MODE_3) \ 70 | __SHIFTIN((v), AGP_MODE_MODE_3)) 71 #define AGP_MODE_SET_RATE(x, v) (((x) & ~AGP_MODE_RATE) \ 72 | __SHIFTIN((v), AGP_MODE_RATE)) 73 74 /* compat */ 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 uint16_t major; 95 uint16_t minor; 96 } agp_version; 97 98 typedef struct _agp_info { 99 agp_version version; /* version of the driver */ 100 uint32_t bridge_id; /* bridge vendor/device */ 101 uint32_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 uint32_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 uint32_t type; /* 0 == normal, other devspec */ 134 uint32_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 uint32_t priority; /* priority for paging out */ 148 } agp_unbind; 149 150 #endif /* !_SYS_AGPIO_H_ */ 151