| 1 | /* |
| 2 | * Abstraction of the AGP GART interface. |
| 3 | * |
| 4 | * This version is for Solaris. |
| 5 | * |
| 6 | * Copyright © 2000 VA Linux Systems, Inc. |
| 7 | * Copyright © 2001 The XFree86 Project, Inc. |
| 8 | */ |
| 9 | /* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. |
| 10 | * |
| 11 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 12 | * copy of this software and associated documentation files (the "Software"), |
| 13 | * to deal in the Software without restriction, including without limitation |
| 14 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 15 | * and/or sell copies of the Software, and to permit persons to whom the |
| 16 | * Software is furnished to do so, subject to the following conditions: |
| 17 | * |
| 18 | * The above copyright notice and this permission notice (including the next |
| 19 | * paragraph) shall be included in all copies or substantial portions of the |
| 20 | * Software. |
| 21 | * |
| 22 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 23 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 24 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 25 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 26 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 28 | * DEALINGS IN THE SOFTWARE. |
| 29 | */ |
| 30 | |
| 31 | #ifdef HAVE_XORG_CONFIG_H |
| 32 | #include <xorg-config.h> |
| 33 | #endif |
| 34 | |
| 35 | #include <X11/X.h> |
| 36 | #include "xf86.h" |
| 37 | #include "xf86Priv.h" |
| 38 | #include "xf86_OSlib.h" |
| 39 | #include "xf86_OSproc.h" |
| 40 | #include <unistd.h> |
| 41 | #include <sys/ioccom.h> |
| 42 | #include <sys/types.h> |
| 43 | #include <fcntl.h> |
| 44 | #include <sys/agpgart.h> |
| 45 | |
| 46 | /* AGP page size is independent of the host page size. */ |
| 47 | #ifndef AGP_PAGE_SIZE |
| 48 | #define AGP_PAGE_SIZE 4096 |
| 49 | #endif |
| 50 | |
| 51 | static int gartFd = -1; |
| 52 | static int acquiredScreen = -1; |
| 53 | static Bool initDone = FALSE; |
| 54 | |
| 55 | /* |
| 56 | * Close /dev/agpgart. This frees all associated memory allocated during |
| 57 | * this server generation. |
| 58 | */ |
| 59 | Bool |
| 60 | xf86GARTCloseScreen(int screenNum) |
| 61 | { |
| 62 | if (gartFd != -1) { |
| 63 | close(gartFd); |
| 64 | acquiredScreen = -1; |
| 65 | gartFd = -1; |
| 66 | initDone = FALSE; |
| 67 | |
| 68 | xf86DrvMsg(screenNum, X_INFO, |
| 69 | "xf86GARTCloseScreen: device closed successfully\n"); |
| 70 | |
| 71 | } |
| 72 | return TRUE; |
| 73 | } |
| 74 | |
| 75 | /* |
| 76 | * Open /dev/agpgart. Keep it open until xf86GARTCloseScreen is called. |
| 77 | */ |
| 78 | static Bool |
| 79 | GARTInit(int screenNum) |
| 80 | { |
| 81 | if (initDone) |
| 82 | return gartFd != -1; |
| 83 | |
| 84 | if (gartFd == -1) |
| 85 | gartFd = open(AGP_DEVICE, O_RDWR); |
| 86 | else |
| 87 | return FALSE; |
| 88 | |
| 89 | if (gartFd == -1) { |
| 90 | xf86DrvMsg(screenNum, X_ERROR, |
| 91 | "GARTInit: Unable to open " AGP_DEVICE " (%s)\n", |
| 92 | strerror(errno)); |
| 93 | return FALSE; |
| 94 | } |
| 95 | |
| 96 | initDone = TRUE; |
| 97 | xf86DrvMsg(screenNum, X_INFO, |
| 98 | "GARTInit: " AGP_DEVICE " opened successfully\n"); |
| 99 | |
| 100 | return TRUE; |
| 101 | } |
| 102 | |
| 103 | Bool |
| 104 | xf86AgpGARTSupported(void) |
| 105 | { |
| 106 | return (GARTInit(-1)); |
| 107 | |
| 108 | } |
| 109 | |
| 110 | AgpInfoPtr |
| 111 | xf86GetAGPInfo(int screenNum) |
| 112 | { |
| 113 | agp_info_t agpinf; |
| 114 | AgpInfoPtr info; |
| 115 | |
| 116 | if (!GARTInit(screenNum)) |
| 117 | return NULL; |
| 118 | |
| 119 | if (ioctl(gartFd, AGPIOC_INFO, &agpinf) != 0) { |
| 120 | xf86DrvMsg(screenNum, X_ERROR, |
| 121 | "xf86GetAGPInfo: AGPIOC_INFO failed (%s)\n", |
| 122 | strerror(errno)); |
| 123 | return NULL; |
| 124 | } |
| 125 | |
| 126 | if ((info = calloc(sizeof(AgpInfo), 1)) == NULL) { |
| 127 | xf86DrvMsg(screenNum, X_ERROR, |
| 128 | "xf86GetAGPInfo: Failed to allocate AgpInfo\n"); |
| 129 | return NULL; |
| 130 | } |
| 131 | |
| 132 | info->bridgeId = agpinf.agpi_devid; |
| 133 | info->agpMode = agpinf.agpi_mode; |
| 134 | info->base = agpinf.agpi_aperbase; |
| 135 | info->size = agpinf.agpi_apersize; |
| 136 | info->totalPages = (unsigned long) agpinf.agpi_pgtotal; |
| 137 | info->systemPages = (unsigned long) agpinf.agpi_pgsystem; |
| 138 | info->usedPages = (unsigned long) agpinf.agpi_pgused; |
| 139 | |
| 140 | return info; |
| 141 | } |
| 142 | |
| 143 | Bool |
| 144 | xf86AcquireGART(int screenNum) |
| 145 | { |
| 146 | |
| 147 | if (!GARTInit(screenNum)) |
| 148 | return FALSE; |
| 149 | |
| 150 | if (acquiredScreen != screenNum) { |
| 151 | if (ioctl(gartFd, AGPIOC_ACQUIRE, 0) != 0) { |
| 152 | xf86DrvMsg(screenNum, X_WARNING, |
| 153 | "xf86AcquireGART: AGPIOC_ACQUIRE failed (%s)\n", |
| 154 | strerror(errno)); |
| 155 | return FALSE; |
| 156 | } |
| 157 | acquiredScreen = screenNum; |
| 158 | xf86DrvMsg(screenNum, X_INFO, |
| 159 | "xf86AcquireGART: AGPIOC_ACQUIRE succeeded\n"); |
| 160 | } |
| 161 | return TRUE; |
| 162 | } |
| 163 | |
| 164 | Bool |
| 165 | xf86ReleaseGART(int screenNum) |
| 166 | { |
| 167 | |
| 168 | if (!GARTInit(screenNum)) |
| 169 | return FALSE; |
| 170 | |
| 171 | if (acquiredScreen == screenNum) { |
| 172 | /* |
| 173 | * The FreeBSD agp driver removes allocations on release. |
| 174 | * The Solaris driver doesn't. xf86ReleaseGART() is expected |
| 175 | * to give up access to the GART, but not to remove any |
| 176 | * allocations. |
| 177 | */ |
| 178 | |
| 179 | if (ioctl(gartFd, AGPIOC_RELEASE, 0) != 0) { |
| 180 | xf86DrvMsg(screenNum, X_WARNING, |
| 181 | "xf86ReleaseGART: AGPIOC_RELEASE failed (%s)\n", |
| 182 | strerror(errno)); |
| 183 | return FALSE; |
| 184 | } |
| 185 | acquiredScreen = -1; |
| 186 | xf86DrvMsg(screenNum, X_INFO, |
| 187 | "xf86ReleaseGART: AGPIOC_RELEASE succeeded\n"); |
| 188 | return TRUE; |
| 189 | } |
| 190 | return FALSE; |
| 191 | } |
| 192 | |
| 193 | int |
| 194 | xf86AllocateGARTMemory(int screenNum, unsigned long size, int type, |
| 195 | unsigned long *physical) |
| 196 | { |
| 197 | agp_allocate_t alloc; |
| 198 | int pages; |
| 199 | |
| 200 | /* |
| 201 | * Allocates "size" bytes of GART memory (rounds up to the next |
| 202 | * page multiple) or type "type". A handle (key) for the allocated |
| 203 | * memory is returned. On error, the return value is -1. |
| 204 | * "size" should be larger than 0, or AGPIOC_ALLOCATE ioctl will |
| 205 | * return error. |
| 206 | */ |
| 207 | |
| 208 | if (!GARTInit(screenNum) || (acquiredScreen != screenNum)) |
| 209 | return -1; |
| 210 | |
| 211 | pages = (size / AGP_PAGE_SIZE); |
| 212 | if (size % AGP_PAGE_SIZE != 0) |
| 213 | pages++; |
| 214 | |
| 215 | alloc.agpa_pgcount = pages; |
| 216 | alloc.agpa_type = type; |
| 217 | |
| 218 | if (ioctl(gartFd, AGPIOC_ALLOCATE, &alloc) != 0) { |
| 219 | xf86DrvMsg(screenNum, X_WARNING, "xf86AllocateGARTMemory: " |
| 220 | "allocation of %d pages failed\n\t(%s)\n", pages, |
| 221 | strerror(errno)); |
| 222 | return -1; |
| 223 | } |
| 224 | |
| 225 | if (physical) |
| 226 | *physical = (unsigned long) alloc.agpa_physical; |
| 227 | |
| 228 | return alloc.agpa_key; |
| 229 | } |
| 230 | |
| 231 | Bool |
| 232 | xf86DeallocateGARTMemory(int screenNum, int key) |
| 233 | { |
| 234 | if (!GARTInit(screenNum) || (acquiredScreen != screenNum)) |
| 235 | return FALSE; |
| 236 | |
| 237 | if (ioctl(gartFd, AGPIOC_DEALLOCATE, (int *) (uintptr_t) key) != 0) { |
| 238 | xf86DrvMsg(screenNum, X_WARNING, "xf86DeAllocateGARTMemory: " |
| 239 | "deallocation of gart memory with key %d failed\n" |
| 240 | "\t(%s)\n", key, strerror(errno)); |
| 241 | return FALSE; |
| 242 | } |
| 243 | |
| 244 | return TRUE; |
| 245 | } |
| 246 | |
| 247 | /* Bind GART memory with "key" at "offset" */ |
| 248 | Bool |
| 249 | xf86BindGARTMemory(int screenNum, int key, unsigned long offset) |
| 250 | { |
| 251 | agp_bind_t bind; |
| 252 | int pageOffset; |
| 253 | |
| 254 | if (!GARTInit(screenNum) || (acquiredScreen != screenNum)) |
| 255 | return FALSE; |
| 256 | |
| 257 | if (offset % AGP_PAGE_SIZE != 0) { |
| 258 | xf86DrvMsg(screenNum, X_WARNING, "xf86BindGARTMemory: " |
| 259 | "offset (0x%lx) is not page-aligned (%d)\n", |
| 260 | offset, AGP_PAGE_SIZE); |
| 261 | return FALSE; |
| 262 | } |
| 263 | pageOffset = offset / AGP_PAGE_SIZE; |
| 264 | |
| 265 | xf86DrvMsgVerb(screenNum, X_INFO, 3, |
| 266 | "xf86BindGARTMemory: bind key %d at 0x%08lx " |
| 267 | "(pgoffset %d)\n", key, offset, pageOffset); |
| 268 | |
| 269 | bind.agpb_pgstart = pageOffset; |
| 270 | bind.agpb_key = key; |
| 271 | |
| 272 | if (ioctl(gartFd, AGPIOC_BIND, &bind) != 0) { |
| 273 | xf86DrvMsg(screenNum, X_WARNING, "xf86BindGARTMemory: " |
| 274 | "binding of gart memory with key %d\n" |
| 275 | "\tat offset 0x%lx failed (%s)\n", |
| 276 | key, offset, strerror(errno)); |
| 277 | return FALSE; |
| 278 | } |
| 279 | |
| 280 | return TRUE; |
| 281 | } |
| 282 | |
| 283 | /* Unbind GART memory with "key" */ |
| 284 | Bool |
| 285 | xf86UnbindGARTMemory(int screenNum, int key) |
| 286 | { |
| 287 | agp_unbind_t unbind; |
| 288 | |
| 289 | if (!GARTInit(screenNum) || (acquiredScreen != screenNum)) |
| 290 | return FALSE; |
| 291 | |
| 292 | unbind.agpu_pri = 0; |
| 293 | unbind.agpu_key = key; |
| 294 | |
| 295 | if (ioctl(gartFd, AGPIOC_UNBIND, &unbind) != 0) { |
| 296 | xf86DrvMsg(screenNum, X_WARNING, "xf86UnbindGARTMemory: " |
| 297 | "unbinding of gart memory with key %d " |
| 298 | "failed (%s)\n", key, strerror(errno)); |
| 299 | return FALSE; |
| 300 | } |
| 301 | |
| 302 | xf86DrvMsgVerb(screenNum, X_INFO, 3, |
| 303 | "xf86UnbindGARTMemory: unbind key %d\n", key); |
| 304 | |
| 305 | return TRUE; |
| 306 | } |
| 307 | |
| 308 | /* XXX Interface may change. */ |
| 309 | Bool |
| 310 | xf86EnableAGP(int screenNum, CARD32 mode) |
| 311 | { |
| 312 | agp_setup_t setup; |
| 313 | |
| 314 | if (!GARTInit(screenNum) || (acquiredScreen != screenNum)) |
| 315 | return FALSE; |
| 316 | |
| 317 | setup.agps_mode = mode; |
| 318 | if (ioctl(gartFd, AGPIOC_SETUP, &setup) != 0) { |
| 319 | xf86DrvMsg(screenNum, X_WARNING, "xf86EnableAGP: " |
| 320 | "AGPIOC_SETUP with mode %x failed (%s)\n", |
| 321 | (unsigned int) mode, strerror(errno)); |
| 322 | return FALSE; |
| 323 | } |
| 324 | |
| 325 | return TRUE; |
| 326 | } |