1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 29#ifndef _SYS_AGPIO_H_ 30#define _SYS_AGPIO_H_ 31 32/* 33 * The AGP gatt uses 4k pages irrespective of the host page size. 34 */ 35#define AGP_PAGE_SIZE 4096 36#define AGP_PAGE_SHIFT 12 37 38/* 39 * Macros to manipulate AGP mode words. 40 * 41 * SBA = Sideband Address Port 42 * FW = Fast Writes 43 */ 44#define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24) 45#define AGP_MODE_GET_ARQSZ(x) (((x) & 0x0000e000U) >> 13) 46#define AGP_MODE_GET_CAL(x) (((x) & 0x00001c00U) >> 10) 47#define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9) 48#define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8) 49#define AGP_MODE_GET_GART_64(x) (((x) & 0x00000080U) >> 7) 50#define AGP_MODE_GET_OVER_4G(x) (((x) & 0x00000020U) >> 5) 51#define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4) 52#define AGP_MODE_GET_MODE_3(x) (((x) & 0x00000008U) >> 3) 53#define AGP_MODE_GET_RATE(x) ((x) & 0x00000007U) 54#define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24)) 55#define AGP_MODE_SET_ARQSZ(x,v) (((x) & ~0x0000e000U) | ((v) << 13)) 56#define AGP_MODE_SET_CAL(x,v) (((x) & ~0x00001c00U) | ((v) << 10)) 57#define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9)) 58#define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8)) 59#define AGP_MODE_SET_GART_64(x,v) (((x) & ~0x00000080U) | ((v) << 7)) 60#define AGP_MODE_SET_OVER_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5)) 61#define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4)) 62#define AGP_MODE_SET_MODE_3(x,v) (((x) & ~0x00000008U) | ((v) << 3)) 63#define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000007U) | (v)) 64#define AGP_MODE_V2_RATE_1x 0x00000001 65#define AGP_MODE_V2_RATE_2x 0x00000002 66#define AGP_MODE_V2_RATE_4x 0x00000004 67#define AGP_MODE_V3_RATE_4x 0x00000001 68#define AGP_MODE_V3_RATE_8x 0x00000002 69#define AGP_MODE_V3_RATE_RSVD 0x00000004 70 71/* XXX: Compat */ 72#define AGP_MODE_GET_4G(x) AGP_MODE_GET_OVER_4G(x) 73#define AGP_MODE_SET_4G(x) AGP_MODE_SET_OVER_4G(x) 74#define AGP_MODE_RATE_1x AGP_MODE_V2_RATE_1x 75#define AGP_MODE_RATE_2x AGP_MODE_V2_RATE_2x 76#define AGP_MODE_RATE_4x AGP_MODE_V2_RATE_4x 77 78#define AGPIOC_BASE 'A' 79#define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info) 80#define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1) 81#define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2) 82#define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup) 83#if 0 84#define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region) 85#define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region) 86#endif 87#define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate) 88#define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int) 89#define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind) 90#define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind) 91#define AGPIOC_CHIPSET_FLUSH _IO (AGPIOC_BASE, 10) 92 93typedef struct _agp_version { 94 u_int16_t major; 95 u_int16_t minor; 96} agp_version; 97 98typedef 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 109typedef 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 */ 117typedef 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 123typedef 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 130typedef 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 140typedef struct _agp_bind { 141 int key; /* tag of allocation */ 142 off_t pg_start; /* starting page to populate */ 143} agp_bind; 144 145typedef 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_ */ 151