1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 2000 Doug Rabson 8 * Copyright (c) 2009, Intel Corporation. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34 #ifndef _SYS_AGPGART_H 35 #define _SYS_AGPGART_H 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 #define AGP_NORMAL 0 /* mapped to user land, no cache */ 42 43 typedef struct _agp_version { 44 uint16_t agpv_major; 45 uint16_t agpv_minor; 46 } agp_version_t; 47 48 49 typedef struct _agp_info { 50 agp_version_t agpi_version; 51 uint32_t agpi_devid; /* bridge vendor + device */ 52 uint32_t agpi_mode; /* mode of brdige */ 53 ulong_t agpi_aperbase; /* base of aperture */ 54 size_t agpi_apersize; /* aperture range size */ 55 uint32_t agpi_pgtotal; /* max number of pages in aperture */ 56 uint32_t agpi_pgsystem; /* same as pg_total */ 57 uint32_t agpi_pgused; /* NUMBER of currently used pages */ 58 } agp_info_t; 59 60 typedef struct _agp_setup { 61 uint32_t agps_mode; 62 } agp_setup_t; 63 64 typedef struct _agp_allocate { 65 int32_t agpa_key; 66 uint32_t agpa_pgcount; 67 uint32_t agpa_type; 68 uint32_t agpa_physical; /* for i810 only, private */ 69 } agp_allocate_t; 70 71 typedef struct _agp_bind_pages { 72 uint32_t agpb_pgstart; 73 uint32_t agpb_pgcount; 74 pfn_t *agpb_pages; 75 uint32_t agpb_type; /* AGP_USER_MEMORY */ 76 } agp_bind_pages_t; 77 78 typedef struct _agp_unbind_pages { 79 uint32_t agpu_pgstart; 80 uint32_t agpu_pgcount; 81 pfn_t agpu_scratch; 82 uint32_t agpu_flags; 83 } agp_unbind_pages_t; 84 85 typedef struct _agp_bind { 86 int32_t agpb_key; 87 uint32_t agpb_pgstart; 88 } agp_bind_t; 89 90 typedef struct _agp_unbind { 91 int32_t agpu_key; 92 uint32_t agpu_pri; /* no use in solaris */ 93 } agp_unbind_t; 94 95 typedef struct _agp_rw_gtt { 96 uint32_t agprw_pgstart; 97 uint32_t agprw_pgcount; 98 void *agprw_addr; /* buffer */ 99 uint32_t agprw_flags; /* 0:read, 1:write */ 100 } agp_rw_gtt_t; 101 102 #define AGPIOC_BASE 'G' 103 #define AGPIOC_INFO _IOR(AGPIOC_BASE, 0, 100) 104 #define AGPIOC_ACQUIRE _IO(AGPIOC_BASE, 1) 105 #define AGPIOC_RELEASE _IO(AGPIOC_BASE, 2) 106 #define AGPIOC_SETUP _IOW(AGPIOC_BASE, 3, agp_setup_t) 107 #define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 4, agp_allocate_t) 108 #define AGPIOC_DEALLOCATE _IOW(AGPIOC_BASE, 5, int) 109 #define AGPIOC_BIND _IOW(AGPIOC_BASE, 6, agp_bind_t) 110 #define AGPIOC_UNBIND _IOW(AGPIOC_BASE, 7, agp_unbind_t) 111 #define AGPIOC_IOREMAP _IO(AGPIOC_BASE, 8) 112 #define AGPIOC_IOREMAP_FREE _IO(AGPIOC_BASE, 9) 113 #define AGPIOC_READ _IO(AGPIOC_BASE, 10) 114 #define AGPIOC_WRITE _IO(AGPIOC_BASE, 11) 115 #define AGPIOC_FLUSHCHIPSET _IO(AGPIOC_BASE, 12) 116 #define AGPIOC_PAGES_BIND _IOW(AGPIOC_BASE, 13, agp_bind_pages_t) 117 #define AGPIOC_PAGES_UNBIND _IOW(AGPIOC_BASE, 14, agp_unbind_pages_t) 118 #define AGPIOC_RW_GTT _IOW(AGPIOC_BASE, 15, agp_rw_gtt_t) 119 120 /* AGP bind pages type values */ 121 #define AGP_USER_TYPES (1 << 16) 122 #define AGP_USER_MEMORY (AGP_USER_TYPES) 123 #define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1) 124 125 /* AGP status register bits definition */ 126 #define AGPSTAT_RQ_MASK 0xff000000 /* target only */ 127 #define AGPSTAT_SBA (0x1 << 9) /* always 1 for 3.0 */ 128 #define AGPSTAT_OVER4G (0x1 << 5) 129 #define AGPSTAT_FW (0x1 << 4) 130 #define AGPSTAT_RATE_MASK 0x7 131 /* rate for 2.0 mode */ 132 #define AGP2_RATE_1X 0x1 133 #define AGP2_RATE_2X 0x2 134 #define AGP2_RATE_4X 0x4 135 /* AGP 3.0 only bits */ 136 #define AGPSTAT_ARQSZ_MASK (0x7 << 13) /* target only */ 137 #define AGPSTAT_CAL_MASK (0x7 << 10) 138 #define AGPSTAT_GART64B (0x1 << 7) /* target only */ 139 #define AGPSTAT_MODE3 (0x1 << 3) 140 /* Rate for 3.0 mode */ 141 #define AGP3_RATE_4X 0x1 142 #define AGP3_RATE_8X 0x2 143 144 /* AGP command register bits definition */ 145 #define AGPCMD_RQ_MASK 0xff000000 /* master only */ 146 #define AGPCMD_SBAEN (0x1 << 9) /* must be 1 for 3.0 */ 147 #define AGPCMD_AGPEN (0x1 << 8) 148 #define AGPCMD_OVER4GEN (0x1 << 5) 149 #define AGPCMD_FWEN (0x1 << 4) 150 #define AGPCMD_RATE_MASK 0x7 151 /* AGP 3.0 only bits */ 152 #define AGP3_CMD_ARQSZ_MASK (0x7 << 13) /* master only */ 153 #define AGP3_CMD_CAL_MASK (0x7 << 10) /* target only */ 154 #define AGP3_CMD_GART64BEN (0x1 << 7) /* target only */ 155 156 #define AGP_DEVICE "/dev/agpgart" 157 158 #ifdef __cplusplus 159 } 160 #endif 161 162 #endif /* _SYS_AGPGART_H */ 163