Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * SHPCHPRM ACPI: PHP Resource Manager for ACPI platform |
| 3 | * |
| 4 | * Copyright (C) 2003-2004 Intel Corporation |
| 5 | * |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or (at |
| 11 | * your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 16 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 17 | * details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 22 | * |
| 23 | * Send feedback to <dely.l.sy@intel.com> |
| 24 | * |
| 25 | */ |
| 26 | |
| 27 | #include <linux/config.h> |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/types.h> |
| 31 | #include <linux/pci.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/acpi.h> |
| 34 | #include <linux/efi.h> |
| 35 | #include <asm/uaccess.h> |
| 36 | #include <asm/system.h> |
| 37 | #ifdef CONFIG_IA64 |
| 38 | #include <asm/iosapic.h> |
| 39 | #endif |
| 40 | #include <acpi/acpi.h> |
| 41 | #include <acpi/acpi_bus.h> |
| 42 | #include <acpi/actypes.h> |
| 43 | #include "shpchp.h" |
| 44 | #include "shpchprm.h" |
| 45 | |
| 46 | #define PCI_MAX_BUS 0x100 |
| 47 | #define ACPI_STA_DEVICE_PRESENT 0x01 |
| 48 | |
| 49 | #define METHOD_NAME__SUN "_SUN" |
| 50 | #define METHOD_NAME__HPP "_HPP" |
| 51 | #define METHOD_NAME_OSHP "OSHP" |
| 52 | |
| 53 | #define PHP_RES_BUS 0xA0 |
| 54 | #define PHP_RES_IO 0xA1 |
| 55 | #define PHP_RES_MEM 0xA2 |
| 56 | #define PHP_RES_PMEM 0xA3 |
| 57 | |
| 58 | #define BRIDGE_TYPE_P2P 0x00 |
| 59 | #define BRIDGE_TYPE_HOST 0x01 |
| 60 | |
| 61 | /* this should go to drivers/acpi/include/ */ |
| 62 | struct acpi__hpp { |
| 63 | u8 cache_line_size; |
| 64 | u8 latency_timer; |
| 65 | u8 enable_serr; |
| 66 | u8 enable_perr; |
| 67 | }; |
| 68 | |
| 69 | struct acpi_php_slot { |
| 70 | struct acpi_php_slot *next; |
| 71 | struct acpi_bridge *bridge; |
| 72 | acpi_handle handle; |
| 73 | int seg; |
| 74 | int bus; |
| 75 | int dev; |
| 76 | int fun; |
| 77 | u32 sun; |
| 78 | struct pci_resource *mem_head; |
| 79 | struct pci_resource *p_mem_head; |
| 80 | struct pci_resource *io_head; |
| 81 | struct pci_resource *bus_head; |
| 82 | void *slot_ops; /* _STA, _EJx, etc */ |
| 83 | struct slot *slot; |
| 84 | }; /* per func */ |
| 85 | |
| 86 | struct acpi_bridge { |
| 87 | struct acpi_bridge *parent; |
| 88 | struct acpi_bridge *next; |
| 89 | struct acpi_bridge *child; |
| 90 | acpi_handle handle; |
| 91 | int seg; |
| 92 | int pbus; /* pdev->bus->number */ |
| 93 | int pdevice; /* PCI_SLOT(pdev->devfn) */ |
| 94 | int pfunction; /* PCI_DEVFN(pdev->devfn) */ |
| 95 | int bus; /* pdev->subordinate->number */ |
| 96 | struct acpi__hpp *_hpp; |
| 97 | struct acpi_php_slot *slots; |
| 98 | struct pci_resource *tmem_head; /* total from crs */ |
| 99 | struct pci_resource *tp_mem_head; /* total from crs */ |
| 100 | struct pci_resource *tio_head; /* total from crs */ |
| 101 | struct pci_resource *tbus_head; /* total from crs */ |
| 102 | struct pci_resource *mem_head; /* available */ |
| 103 | struct pci_resource *p_mem_head; /* available */ |
| 104 | struct pci_resource *io_head; /* available */ |
| 105 | struct pci_resource *bus_head; /* available */ |
| 106 | int scanned; |
| 107 | int type; |
| 108 | }; |
| 109 | |
| 110 | static struct acpi_bridge *acpi_bridges_head; |
| 111 | |
| 112 | static u8 * acpi_path_name( acpi_handle handle) |
| 113 | { |
| 114 | acpi_status status; |
| 115 | static u8 path_name[ACPI_PATHNAME_MAX]; |
| 116 | struct acpi_buffer ret_buf = { ACPI_PATHNAME_MAX, path_name }; |
| 117 | |
| 118 | memset(path_name, 0, sizeof (path_name)); |
| 119 | status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &ret_buf); |
| 120 | |
| 121 | if (ACPI_FAILURE(status)) |
| 122 | return NULL; |
| 123 | else |
| 124 | return path_name; |
| 125 | } |
| 126 | |
| 127 | static void acpi_get__hpp ( struct acpi_bridge *ab); |
| 128 | static void acpi_run_oshp ( struct acpi_bridge *ab); |
| 129 | |
| 130 | static int acpi_add_slot_to_php_slots( |
| 131 | struct acpi_bridge *ab, |
| 132 | int bus_num, |
| 133 | acpi_handle handle, |
| 134 | u32 adr, |
| 135 | u32 sun |
| 136 | ) |
| 137 | { |
| 138 | struct acpi_php_slot *aps; |
| 139 | static long samesun = -1; |
| 140 | |
| 141 | aps = (struct acpi_php_slot *) kmalloc (sizeof(struct acpi_php_slot), GFP_KERNEL); |
| 142 | if (!aps) { |
| 143 | err ("acpi_shpchprm: alloc for aps fail\n"); |
| 144 | return -1; |
| 145 | } |
| 146 | memset(aps, 0, sizeof(struct acpi_php_slot)); |
| 147 | |
| 148 | aps->handle = handle; |
| 149 | aps->bus = bus_num; |
| 150 | aps->dev = (adr >> 16) & 0xffff; |
| 151 | aps->fun = adr & 0xffff; |
| 152 | aps->sun = sun; |
| 153 | |
| 154 | aps->next = ab->slots; /* cling to the bridge */ |
| 155 | aps->bridge = ab; |
| 156 | ab->slots = aps; |
| 157 | |
| 158 | ab->scanned += 1; |
| 159 | if (!ab->_hpp) |
| 160 | acpi_get__hpp(ab); |
| 161 | |
| 162 | acpi_run_oshp(ab); |
| 163 | |
| 164 | if (sun != samesun) { |
| 165 | info("acpi_shpchprm: Slot sun(%x) at s:b:d:f=0x%02x:%02x:%02x:%02x\n", aps->sun, ab->seg, |
| 166 | aps->bus, aps->dev, aps->fun); |
| 167 | samesun = sun; |
| 168 | } |
| 169 | return 0; |
| 170 | } |
| 171 | |
| 172 | static void acpi_get__hpp ( struct acpi_bridge *ab) |
| 173 | { |
| 174 | acpi_status status; |
| 175 | u8 nui[4]; |
| 176 | struct acpi_buffer ret_buf = { 0, NULL}; |
| 177 | union acpi_object *ext_obj, *package; |
| 178 | u8 *path_name = acpi_path_name(ab->handle); |
| 179 | int i, len = 0; |
| 180 | |
| 181 | /* get _hpp */ |
| 182 | status = acpi_evaluate_object(ab->handle, METHOD_NAME__HPP, NULL, &ret_buf); |
| 183 | switch (status) { |
| 184 | case AE_BUFFER_OVERFLOW: |
| 185 | ret_buf.pointer = kmalloc (ret_buf.length, GFP_KERNEL); |
| 186 | if (!ret_buf.pointer) { |
| 187 | err ("acpi_shpchprm:%s alloc for _HPP fail\n", path_name); |
| 188 | return; |
| 189 | } |
| 190 | status = acpi_evaluate_object(ab->handle, METHOD_NAME__HPP, NULL, &ret_buf); |
| 191 | if (ACPI_SUCCESS(status)) |
| 192 | break; |
| 193 | default: |
| 194 | if (ACPI_FAILURE(status)) { |
| 195 | err("acpi_shpchprm:%s _HPP fail=0x%x\n", path_name, status); |
| 196 | return; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | ext_obj = (union acpi_object *) ret_buf.pointer; |
| 201 | if (ext_obj->type != ACPI_TYPE_PACKAGE) { |
| 202 | err ("acpi_shpchprm:%s _HPP obj not a package\n", path_name); |
| 203 | goto free_and_return; |
| 204 | } |
| 205 | |
| 206 | len = ext_obj->package.count; |
| 207 | package = (union acpi_object *) ret_buf.pointer; |
| 208 | for ( i = 0; (i < len) || (i < 4); i++) { |
| 209 | ext_obj = (union acpi_object *) &package->package.elements[i]; |
| 210 | switch (ext_obj->type) { |
| 211 | case ACPI_TYPE_INTEGER: |
| 212 | nui[i] = (u8)ext_obj->integer.value; |
| 213 | break; |
| 214 | default: |
| 215 | err ("acpi_shpchprm:%s _HPP obj type incorrect\n", path_name); |
| 216 | goto free_and_return; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | ab->_hpp = kmalloc (sizeof (struct acpi__hpp), GFP_KERNEL); |
| 221 | if (!ab->_hpp) { |
| 222 | err ("acpi_shpchprm:%s alloc for _HPP failed\n", path_name); |
| 223 | goto free_and_return; |
| 224 | } |
| 225 | memset(ab->_hpp, 0, sizeof(struct acpi__hpp)); |
| 226 | |
| 227 | ab->_hpp->cache_line_size = nui[0]; |
| 228 | ab->_hpp->latency_timer = nui[1]; |
| 229 | ab->_hpp->enable_serr = nui[2]; |
| 230 | ab->_hpp->enable_perr = nui[3]; |
| 231 | |
| 232 | dbg(" _HPP: cache_line_size=0x%x\n", ab->_hpp->cache_line_size); |
| 233 | dbg(" _HPP: latency timer =0x%x\n", ab->_hpp->latency_timer); |
| 234 | dbg(" _HPP: enable SERR =0x%x\n", ab->_hpp->enable_serr); |
| 235 | dbg(" _HPP: enable PERR =0x%x\n", ab->_hpp->enable_perr); |
| 236 | |
| 237 | free_and_return: |
| 238 | kfree(ret_buf.pointer); |
| 239 | } |
| 240 | |
| 241 | static void acpi_run_oshp ( struct acpi_bridge *ab) |
| 242 | { |
| 243 | acpi_status status; |
| 244 | u8 *path_name = acpi_path_name(ab->handle); |
| 245 | |
| 246 | /* run OSHP */ |
| 247 | status = acpi_evaluate_object(ab->handle, METHOD_NAME_OSHP, NULL, NULL); |
| 248 | if (ACPI_FAILURE(status)) { |
| 249 | err("acpi_pciehprm:%s OSHP fails=0x%x\n", path_name, status); |
| 250 | } else |
| 251 | dbg("acpi_pciehprm:%s OSHP passes =0x%x\n", path_name, status); |
| 252 | return; |
| 253 | } |
| 254 | |
| 255 | static acpi_status acpi_evaluate_crs( |
| 256 | acpi_handle handle, |
| 257 | struct acpi_resource **retbuf |
| 258 | ) |
| 259 | { |
| 260 | acpi_status status; |
| 261 | struct acpi_buffer crsbuf; |
| 262 | u8 *path_name = acpi_path_name(handle); |
| 263 | |
| 264 | crsbuf.length = 0; |
| 265 | crsbuf.pointer = NULL; |
| 266 | |
| 267 | status = acpi_get_current_resources (handle, &crsbuf); |
| 268 | |
| 269 | switch (status) { |
| 270 | case AE_BUFFER_OVERFLOW: |
| 271 | break; /* found */ |
| 272 | case AE_NOT_FOUND: |
| 273 | dbg("acpi_shpchprm:%s _CRS not found\n", path_name); |
| 274 | return status; |
| 275 | default: |
| 276 | err ("acpi_shpchprm:%s _CRS fail=0x%x\n", path_name, status); |
| 277 | return status; |
| 278 | } |
| 279 | |
| 280 | crsbuf.pointer = kmalloc (crsbuf.length, GFP_KERNEL); |
| 281 | if (!crsbuf.pointer) { |
| 282 | err ("acpi_shpchprm: alloc %ld bytes for %s _CRS fail\n", (ulong)crsbuf.length, path_name); |
| 283 | return AE_NO_MEMORY; |
| 284 | } |
| 285 | |
| 286 | status = acpi_get_current_resources (handle, &crsbuf); |
| 287 | if (ACPI_FAILURE(status)) { |
| 288 | err("acpi_shpchprm: %s _CRS fail=0x%x.\n", path_name, status); |
| 289 | kfree(crsbuf.pointer); |
| 290 | return status; |
| 291 | } |
| 292 | |
| 293 | *retbuf = crsbuf.pointer; |
| 294 | |
| 295 | return status; |
| 296 | } |
| 297 | |
| 298 | static void free_pci_resource ( struct pci_resource *aprh) |
| 299 | { |
| 300 | struct pci_resource *res, *next; |
| 301 | |
| 302 | for (res = aprh; res; res = next) { |
| 303 | next = res->next; |
| 304 | kfree(res); |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | static void print_pci_resource ( struct pci_resource *aprh) |
| 309 | { |
| 310 | struct pci_resource *res; |
| 311 | |
| 312 | for (res = aprh; res; res = res->next) |
| 313 | dbg(" base= 0x%x length= 0x%x\n", res->base, res->length); |
| 314 | } |
| 315 | |
| 316 | static void print_slot_resources( struct acpi_php_slot *aps) |
| 317 | { |
| 318 | if (aps->bus_head) { |
| 319 | dbg(" BUS Resources:\n"); |
| 320 | print_pci_resource (aps->bus_head); |
| 321 | } |
| 322 | |
| 323 | if (aps->io_head) { |
| 324 | dbg(" IO Resources:\n"); |
| 325 | print_pci_resource (aps->io_head); |
| 326 | } |
| 327 | |
| 328 | if (aps->mem_head) { |
| 329 | dbg(" MEM Resources:\n"); |
| 330 | print_pci_resource (aps->mem_head); |
| 331 | } |
| 332 | |
| 333 | if (aps->p_mem_head) { |
| 334 | dbg(" PMEM Resources:\n"); |
| 335 | print_pci_resource (aps->p_mem_head); |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | static void print_pci_resources( struct acpi_bridge *ab) |
| 340 | { |
| 341 | if (ab->tbus_head) { |
| 342 | dbg(" Total BUS Resources:\n"); |
| 343 | print_pci_resource (ab->tbus_head); |
| 344 | } |
| 345 | if (ab->bus_head) { |
| 346 | dbg(" BUS Resources:\n"); |
| 347 | print_pci_resource (ab->bus_head); |
| 348 | } |
| 349 | |
| 350 | if (ab->tio_head) { |
| 351 | dbg(" Total IO Resources:\n"); |
| 352 | print_pci_resource (ab->tio_head); |
| 353 | } |
| 354 | if (ab->io_head) { |
| 355 | dbg(" IO Resources:\n"); |
| 356 | print_pci_resource (ab->io_head); |
| 357 | } |
| 358 | |
| 359 | if (ab->tmem_head) { |
| 360 | dbg(" Total MEM Resources:\n"); |
| 361 | print_pci_resource (ab->tmem_head); |
| 362 | } |
| 363 | if (ab->mem_head) { |
| 364 | dbg(" MEM Resources:\n"); |
| 365 | print_pci_resource (ab->mem_head); |
| 366 | } |
| 367 | |
| 368 | if (ab->tp_mem_head) { |
| 369 | dbg(" Total PMEM Resources:\n"); |
| 370 | print_pci_resource (ab->tp_mem_head); |
| 371 | } |
| 372 | if (ab->p_mem_head) { |
| 373 | dbg(" PMEM Resources:\n"); |
| 374 | print_pci_resource (ab->p_mem_head); |
| 375 | } |
| 376 | if (ab->_hpp) { |
| 377 | dbg(" _HPP: cache_line_size=0x%x\n", ab->_hpp->cache_line_size); |
| 378 | dbg(" _HPP: latency timer =0x%x\n", ab->_hpp->latency_timer); |
| 379 | dbg(" _HPP: enable SERR =0x%x\n", ab->_hpp->enable_serr); |
| 380 | dbg(" _HPP: enable PERR =0x%x\n", ab->_hpp->enable_perr); |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | static int shpchprm_delete_resource( |
| 385 | struct pci_resource **aprh, |
| 386 | ulong base, |
| 387 | ulong size) |
| 388 | { |
| 389 | struct pci_resource *res; |
| 390 | struct pci_resource *prevnode; |
| 391 | struct pci_resource *split_node; |
| 392 | ulong tbase; |
| 393 | |
| 394 | shpchp_resource_sort_and_combine(aprh); |
| 395 | |
| 396 | for (res = *aprh; res; res = res->next) { |
| 397 | if (res->base > base) |
| 398 | continue; |
| 399 | |
| 400 | if ((res->base + res->length) < (base + size)) |
| 401 | continue; |
| 402 | |
| 403 | if (res->base < base) { |
| 404 | tbase = base; |
| 405 | |
| 406 | if ((res->length - (tbase - res->base)) < size) |
| 407 | continue; |
| 408 | |
| 409 | split_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL); |
| 410 | if (!split_node) |
| 411 | return -ENOMEM; |
| 412 | |
| 413 | split_node->base = res->base; |
| 414 | split_node->length = tbase - res->base; |
| 415 | res->base = tbase; |
| 416 | res->length -= split_node->length; |
| 417 | |
| 418 | split_node->next = res->next; |
| 419 | res->next = split_node; |
| 420 | } |
| 421 | |
| 422 | if (res->length >= size) { |
| 423 | split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL); |
| 424 | if (!split_node) |
| 425 | return -ENOMEM; |
| 426 | |
| 427 | split_node->base = res->base + size; |
| 428 | split_node->length = res->length - size; |
| 429 | res->length = size; |
| 430 | |
| 431 | split_node->next = res->next; |
| 432 | res->next = split_node; |
| 433 | } |
| 434 | |
| 435 | if (*aprh == res) { |
| 436 | *aprh = res->next; |
| 437 | } else { |
| 438 | prevnode = *aprh; |
| 439 | while (prevnode->next != res) |
| 440 | prevnode = prevnode->next; |
| 441 | |
| 442 | prevnode->next = res->next; |
| 443 | } |
| 444 | res->next = NULL; |
| 445 | kfree(res); |
| 446 | break; |
| 447 | } |
| 448 | |
| 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | static int shpchprm_delete_resources( |
| 453 | struct pci_resource **aprh, |
| 454 | struct pci_resource *this |
| 455 | ) |
| 456 | { |
| 457 | struct pci_resource *res; |
| 458 | |
| 459 | for (res = this; res; res = res->next) |
| 460 | shpchprm_delete_resource(aprh, res->base, res->length); |
| 461 | |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static int shpchprm_add_resource( |
| 466 | struct pci_resource **aprh, |
| 467 | ulong base, |
| 468 | ulong size) |
| 469 | { |
| 470 | struct pci_resource *res; |
| 471 | |
| 472 | for (res = *aprh; res; res = res->next) { |
| 473 | if ((res->base + res->length) == base) { |
| 474 | res->length += size; |
| 475 | size = 0L; |
| 476 | break; |
| 477 | } |
| 478 | if (res->next == *aprh) |
| 479 | break; |
| 480 | } |
| 481 | |
| 482 | if (size) { |
| 483 | res = kmalloc(sizeof(struct pci_resource), GFP_KERNEL); |
| 484 | if (!res) { |
| 485 | err ("acpi_shpchprm: alloc for res fail\n"); |
| 486 | return -ENOMEM; |
| 487 | } |
| 488 | memset(res, 0, sizeof (struct pci_resource)); |
| 489 | |
| 490 | res->base = base; |
| 491 | res->length = size; |
| 492 | res->next = *aprh; |
| 493 | *aprh = res; |
| 494 | } |
| 495 | |
| 496 | return 0; |
| 497 | } |
| 498 | |
| 499 | static int shpchprm_add_resources( |
| 500 | struct pci_resource **aprh, |
| 501 | struct pci_resource *this |
| 502 | ) |
| 503 | { |
| 504 | struct pci_resource *res; |
| 505 | int rc = 0; |
| 506 | |
| 507 | for (res = this; res && !rc; res = res->next) |
| 508 | rc = shpchprm_add_resource(aprh, res->base, res->length); |
| 509 | |
| 510 | return rc; |
| 511 | } |
| 512 | |
| 513 | static void acpi_parse_io ( |
| 514 | struct acpi_bridge *ab, |
| 515 | union acpi_resource_data *data |
| 516 | ) |
| 517 | { |
| 518 | struct acpi_resource_io *dataio; |
| 519 | dataio = (struct acpi_resource_io *) data; |
| 520 | |
| 521 | dbg("Io Resource\n"); |
| 522 | dbg(" %d bit decode\n", ACPI_DECODE_16 == dataio->io_decode ? 16:10); |
| 523 | dbg(" Range minimum base: %08X\n", dataio->min_base_address); |
| 524 | dbg(" Range maximum base: %08X\n", dataio->max_base_address); |
| 525 | dbg(" Alignment: %08X\n", dataio->alignment); |
| 526 | dbg(" Range Length: %08X\n", dataio->range_length); |
| 527 | } |
| 528 | |
| 529 | static void acpi_parse_fixed_io ( |
| 530 | struct acpi_bridge *ab, |
| 531 | union acpi_resource_data *data |
| 532 | ) |
| 533 | { |
| 534 | struct acpi_resource_fixed_io *datafio; |
| 535 | datafio = (struct acpi_resource_fixed_io *) data; |
| 536 | |
| 537 | dbg("Fixed Io Resource\n"); |
| 538 | dbg(" Range base address: %08X", datafio->base_address); |
| 539 | dbg(" Range length: %08X", datafio->range_length); |
| 540 | } |
| 541 | |
| 542 | static void acpi_parse_address16_32 ( |
| 543 | struct acpi_bridge *ab, |
| 544 | union acpi_resource_data *data, |
| 545 | acpi_resource_type id |
| 546 | ) |
| 547 | { |
| 548 | /* |
| 549 | * acpi_resource_address16 == acpi_resource_address32 |
| 550 | * acpi_resource_address16 *data16 = (acpi_resource_address16 *) data; |
| 551 | */ |
| 552 | struct acpi_resource_address32 *data32 = (struct acpi_resource_address32 *) data; |
| 553 | struct pci_resource **aprh, **tprh; |
| 554 | |
| 555 | if (id == ACPI_RSTYPE_ADDRESS16) |
| 556 | dbg("acpi_shpchprm:16-Bit Address Space Resource\n"); |
| 557 | else |
| 558 | dbg("acpi_shpchprm:32-Bit Address Space Resource\n"); |
| 559 | |
| 560 | switch (data32->resource_type) { |
| 561 | case ACPI_MEMORY_RANGE: |
| 562 | dbg(" Resource Type: Memory Range\n"); |
| 563 | aprh = &ab->mem_head; |
| 564 | tprh = &ab->tmem_head; |
| 565 | |
| 566 | switch (data32->attribute.memory.cache_attribute) { |
| 567 | case ACPI_NON_CACHEABLE_MEMORY: |
| 568 | dbg(" Type Specific: Noncacheable memory\n"); |
| 569 | break; |
| 570 | case ACPI_CACHABLE_MEMORY: |
| 571 | dbg(" Type Specific: Cacheable memory\n"); |
| 572 | break; |
| 573 | case ACPI_WRITE_COMBINING_MEMORY: |
| 574 | dbg(" Type Specific: Write-combining memory\n"); |
| 575 | break; |
| 576 | case ACPI_PREFETCHABLE_MEMORY: |
| 577 | aprh = &ab->p_mem_head; |
| 578 | dbg(" Type Specific: Prefetchable memory\n"); |
| 579 | break; |
| 580 | default: |
| 581 | dbg(" Type Specific: Invalid cache attribute\n"); |
| 582 | break; |
| 583 | } |
| 584 | |
| 585 | dbg(" Type Specific: Read%s\n", ACPI_READ_WRITE_MEMORY == data32->attribute.memory.read_write_attribute ? "/Write":" Only"); |
| 586 | break; |
| 587 | |
| 588 | case ACPI_IO_RANGE: |
| 589 | dbg(" Resource Type: I/O Range\n"); |
| 590 | aprh = &ab->io_head; |
| 591 | tprh = &ab->tio_head; |
| 592 | |
| 593 | switch (data32->attribute.io.range_attribute) { |
| 594 | case ACPI_NON_ISA_ONLY_RANGES: |
| 595 | dbg(" Type Specific: Non-ISA Io Addresses\n"); |
| 596 | break; |
| 597 | case ACPI_ISA_ONLY_RANGES: |
| 598 | dbg(" Type Specific: ISA Io Addresses\n"); |
| 599 | break; |
| 600 | case ACPI_ENTIRE_RANGE: |
| 601 | dbg(" Type Specific: ISA and non-ISA Io Addresses\n"); |
| 602 | break; |
| 603 | default: |
| 604 | dbg(" Type Specific: Invalid range attribute\n"); |
| 605 | break; |
| 606 | } |
| 607 | break; |
| 608 | |
| 609 | case ACPI_BUS_NUMBER_RANGE: |
| 610 | dbg(" Resource Type: Bus Number Range(fixed)\n"); |
| 611 | /* fixup to be compatible with the rest of php driver */ |
| 612 | data32->min_address_range++; |
| 613 | data32->address_length--; |
| 614 | aprh = &ab->bus_head; |
| 615 | tprh = &ab->tbus_head; |
| 616 | break; |
| 617 | default: |
| 618 | dbg(" Resource Type: Invalid resource type. Exiting.\n"); |
| 619 | return; |
| 620 | } |
| 621 | |
| 622 | dbg(" Resource %s\n", ACPI_CONSUMER == data32->producer_consumer ? "Consumer":"Producer"); |
| 623 | dbg(" %s decode\n", ACPI_SUB_DECODE == data32->decode ? "Subtractive":"Positive"); |
| 624 | dbg(" Min address is %s fixed\n", ACPI_ADDRESS_FIXED == data32->min_address_fixed ? "":"not"); |
| 625 | dbg(" Max address is %s fixed\n", ACPI_ADDRESS_FIXED == data32->max_address_fixed ? "":"not"); |
| 626 | dbg(" Granularity: %08X\n", data32->granularity); |
| 627 | dbg(" Address range min: %08X\n", data32->min_address_range); |
| 628 | dbg(" Address range max: %08X\n", data32->max_address_range); |
| 629 | dbg(" Address translation offset: %08X\n", data32->address_translation_offset); |
| 630 | dbg(" Address Length: %08X\n", data32->address_length); |
| 631 | |
| 632 | if (0xFF != data32->resource_source.index) { |
| 633 | dbg(" Resource Source Index: %X\n", data32->resource_source.index); |
| 634 | /* dbg(" Resource Source: %s\n", data32->resource_source.string_ptr); */ |
| 635 | } |
| 636 | |
| 637 | shpchprm_add_resource(aprh, data32->min_address_range, data32->address_length); |
| 638 | } |
| 639 | |
| 640 | static acpi_status acpi_parse_crs( |
| 641 | struct acpi_bridge *ab, |
| 642 | struct acpi_resource *crsbuf |
| 643 | ) |
| 644 | { |
| 645 | acpi_status status = AE_OK; |
| 646 | struct acpi_resource *resource = crsbuf; |
| 647 | u8 count = 0; |
| 648 | u8 done = 0; |
| 649 | |
| 650 | while (!done) { |
| 651 | dbg("acpi_shpchprm: PCI bus 0x%x Resource structure %x.\n", ab->bus, count++); |
| 652 | switch (resource->id) { |
| 653 | case ACPI_RSTYPE_IRQ: |
| 654 | dbg("Irq -------- Resource\n"); |
| 655 | break; |
| 656 | case ACPI_RSTYPE_DMA: |
| 657 | dbg("DMA -------- Resource\n"); |
| 658 | break; |
| 659 | case ACPI_RSTYPE_START_DPF: |
| 660 | dbg("Start DPF -------- Resource\n"); |
| 661 | break; |
| 662 | case ACPI_RSTYPE_END_DPF: |
| 663 | dbg("End DPF -------- Resource\n"); |
| 664 | break; |
| 665 | case ACPI_RSTYPE_IO: |
| 666 | acpi_parse_io (ab, &resource->data); |
| 667 | break; |
| 668 | case ACPI_RSTYPE_FIXED_IO: |
| 669 | acpi_parse_fixed_io (ab, &resource->data); |
| 670 | break; |
| 671 | case ACPI_RSTYPE_VENDOR: |
| 672 | dbg("Vendor -------- Resource\n"); |
| 673 | break; |
| 674 | case ACPI_RSTYPE_END_TAG: |
| 675 | dbg("End_tag -------- Resource\n"); |
| 676 | done = 1; |
| 677 | break; |
| 678 | case ACPI_RSTYPE_MEM24: |
| 679 | dbg("Mem24 -------- Resource\n"); |
| 680 | break; |
| 681 | case ACPI_RSTYPE_MEM32: |
| 682 | dbg("Mem32 -------- Resource\n"); |
| 683 | break; |
| 684 | case ACPI_RSTYPE_FIXED_MEM32: |
| 685 | dbg("Fixed Mem32 -------- Resource\n"); |
| 686 | break; |
| 687 | case ACPI_RSTYPE_ADDRESS16: |
| 688 | acpi_parse_address16_32(ab, &resource->data, ACPI_RSTYPE_ADDRESS16); |
| 689 | break; |
| 690 | case ACPI_RSTYPE_ADDRESS32: |
| 691 | acpi_parse_address16_32(ab, &resource->data, ACPI_RSTYPE_ADDRESS32); |
| 692 | break; |
| 693 | case ACPI_RSTYPE_ADDRESS64: |
| 694 | info("Address64 -------- Resource unparsed\n"); |
| 695 | break; |
| 696 | case ACPI_RSTYPE_EXT_IRQ: |
| 697 | dbg("Ext Irq -------- Resource\n"); |
| 698 | break; |
| 699 | default: |
| 700 | dbg("Invalid -------- resource type 0x%x\n", resource->id); |
| 701 | break; |
| 702 | } |
| 703 | |
| 704 | resource = (struct acpi_resource *) ((char *)resource + resource->length); |
| 705 | } |
| 706 | |
| 707 | return status; |
| 708 | } |
| 709 | |
| 710 | static acpi_status acpi_get_crs( struct acpi_bridge *ab) |
| 711 | { |
| 712 | acpi_status status; |
| 713 | struct acpi_resource *crsbuf; |
| 714 | |
| 715 | status = acpi_evaluate_crs(ab->handle, &crsbuf); |
| 716 | if (ACPI_SUCCESS(status)) { |
| 717 | status = acpi_parse_crs(ab, crsbuf); |
| 718 | kfree(crsbuf); |
| 719 | |
| 720 | shpchp_resource_sort_and_combine(&ab->bus_head); |
| 721 | shpchp_resource_sort_and_combine(&ab->io_head); |
| 722 | shpchp_resource_sort_and_combine(&ab->mem_head); |
| 723 | shpchp_resource_sort_and_combine(&ab->p_mem_head); |
| 724 | |
| 725 | shpchprm_add_resources (&ab->tbus_head, ab->bus_head); |
| 726 | shpchprm_add_resources (&ab->tio_head, ab->io_head); |
| 727 | shpchprm_add_resources (&ab->tmem_head, ab->mem_head); |
| 728 | shpchprm_add_resources (&ab->tp_mem_head, ab->p_mem_head); |
| 729 | } |
| 730 | |
| 731 | return status; |
| 732 | } |
| 733 | |
| 734 | /* find acpi_bridge downword from ab. */ |
| 735 | static struct acpi_bridge * |
| 736 | find_acpi_bridge_by_bus( |
| 737 | struct acpi_bridge *ab, |
| 738 | int seg, |
| 739 | int bus /* pdev->subordinate->number */ |
| 740 | ) |
| 741 | { |
| 742 | struct acpi_bridge *lab = NULL; |
| 743 | |
| 744 | if (!ab) |
| 745 | return NULL; |
| 746 | |
| 747 | if ((ab->bus == bus) && (ab->seg == seg)) |
| 748 | return ab; |
| 749 | |
| 750 | if (ab->child) |
| 751 | lab = find_acpi_bridge_by_bus(ab->child, seg, bus); |
| 752 | |
| 753 | if (!lab) |
| 754 | if (ab->next) |
| 755 | lab = find_acpi_bridge_by_bus(ab->next, seg, bus); |
| 756 | |
| 757 | return lab; |
| 758 | } |
| 759 | |
| 760 | /* |
| 761 | * Build a device tree of ACPI PCI Bridges |
| 762 | */ |
| 763 | static void shpchprm_acpi_register_a_bridge ( |
| 764 | struct acpi_bridge **head, |
| 765 | struct acpi_bridge *pab, /* parent bridge to which child bridge is added */ |
| 766 | struct acpi_bridge *cab /* child bridge to add */ |
| 767 | ) |
| 768 | { |
| 769 | struct acpi_bridge *lpab; |
| 770 | struct acpi_bridge *lcab; |
| 771 | |
| 772 | lpab = find_acpi_bridge_by_bus(*head, pab->seg, pab->bus); |
| 773 | if (!lpab) { |
| 774 | if (!(pab->type & BRIDGE_TYPE_HOST)) |
| 775 | warn("PCI parent bridge s:b(%x:%x) not in list.\n", pab->seg, pab->bus); |
| 776 | pab->next = *head; |
| 777 | *head = pab; |
| 778 | lpab = pab; |
| 779 | } |
| 780 | |
| 781 | if ((cab->type & BRIDGE_TYPE_HOST) && (pab == cab)) |
| 782 | return; |
| 783 | |
| 784 | lcab = find_acpi_bridge_by_bus(*head, cab->seg, cab->bus); |
| 785 | if (lcab) { |
| 786 | if ((pab->bus != lcab->parent->bus) || (lcab->bus != cab->bus)) |
| 787 | err("PCI child bridge s:b(%x:%x) in list with diff parent.\n", cab->seg, cab->bus); |
| 788 | return; |
| 789 | } else |
| 790 | lcab = cab; |
| 791 | |
| 792 | lcab->parent = lpab; |
| 793 | lcab->next = lpab->child; |
| 794 | lpab->child = lcab; |
| 795 | } |
| 796 | |
| 797 | static acpi_status shpchprm_acpi_build_php_slots_callback( |
| 798 | acpi_handle handle, |
| 799 | u32 Level, |
| 800 | void *context, |
| 801 | void **retval |
| 802 | ) |
| 803 | { |
| 804 | ulong bus_num; |
| 805 | ulong seg_num; |
| 806 | ulong sun, adr; |
| 807 | ulong padr = 0; |
| 808 | acpi_handle phandle = NULL; |
| 809 | struct acpi_bridge *pab = (struct acpi_bridge *)context; |
| 810 | struct acpi_bridge *lab; |
| 811 | acpi_status status; |
| 812 | u8 *path_name = acpi_path_name(handle); |
| 813 | |
| 814 | /* get _SUN */ |
| 815 | status = acpi_evaluate_integer(handle, METHOD_NAME__SUN, NULL, &sun); |
| 816 | switch(status) { |
| 817 | case AE_NOT_FOUND: |
| 818 | return AE_OK; |
| 819 | default: |
| 820 | if (ACPI_FAILURE(status)) { |
| 821 | err("acpi_shpchprm:%s _SUN fail=0x%x\n", path_name, status); |
| 822 | return status; |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | /* get _ADR. _ADR must exist if _SUN exists */ |
| 827 | status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr); |
| 828 | if (ACPI_FAILURE(status)) { |
| 829 | err("acpi_shpchprm:%s _ADR fail=0x%x\n", path_name, status); |
| 830 | return status; |
| 831 | } |
| 832 | |
| 833 | dbg("acpi_shpchprm:%s sun=0x%08x adr=0x%08x\n", path_name, (u32)sun, (u32)adr); |
| 834 | |
| 835 | status = acpi_get_parent(handle, &phandle); |
| 836 | if (ACPI_FAILURE(status)) { |
| 837 | err("acpi_shpchprm:%s get_parent fail=0x%x\n", path_name, status); |
| 838 | return (status); |
| 839 | } |
| 840 | |
| 841 | bus_num = pab->bus; |
| 842 | seg_num = pab->seg; |
| 843 | |
| 844 | if (pab->bus == bus_num) { |
| 845 | lab = pab; |
| 846 | } else { |
| 847 | dbg("WARN: pab is not parent\n"); |
| 848 | lab = find_acpi_bridge_by_bus(pab, seg_num, bus_num); |
| 849 | if (!lab) { |
| 850 | dbg("acpi_shpchprm: alloc new P2P bridge(%x) for sun(%08x)\n", (u32)bus_num, (u32)sun); |
| 851 | lab = (struct acpi_bridge *)kmalloc(sizeof(struct acpi_bridge), GFP_KERNEL); |
| 852 | if (!lab) { |
| 853 | err("acpi_shpchprm: alloc for ab fail\n"); |
| 854 | return AE_NO_MEMORY; |
| 855 | } |
| 856 | memset(lab, 0, sizeof(struct acpi_bridge)); |
| 857 | |
| 858 | lab->handle = phandle; |
| 859 | lab->pbus = pab->bus; |
| 860 | lab->pdevice = (int)(padr >> 16) & 0xffff; |
| 861 | lab->pfunction = (int)(padr & 0xffff); |
| 862 | lab->bus = (int)bus_num; |
| 863 | lab->scanned = 0; |
| 864 | lab->type = BRIDGE_TYPE_P2P; |
| 865 | |
| 866 | shpchprm_acpi_register_a_bridge (&acpi_bridges_head, pab, lab); |
| 867 | } else |
| 868 | dbg("acpi_shpchprm: found P2P bridge(%x) for sun(%08x)\n", (u32)bus_num, (u32)sun); |
| 869 | } |
| 870 | |
| 871 | acpi_add_slot_to_php_slots(lab, (int)bus_num, handle, (u32)adr, (u32)sun); |
| 872 | return (status); |
| 873 | } |
| 874 | |
| 875 | static int shpchprm_acpi_build_php_slots( |
| 876 | struct acpi_bridge *ab, |
| 877 | u32 depth |
| 878 | ) |
| 879 | { |
| 880 | acpi_status status; |
| 881 | u8 *path_name = acpi_path_name(ab->handle); |
| 882 | |
| 883 | /* Walk down this pci bridge to get _SUNs if any behind P2P */ |
| 884 | status = acpi_walk_namespace ( ACPI_TYPE_DEVICE, |
| 885 | ab->handle, |
| 886 | depth, |
| 887 | shpchprm_acpi_build_php_slots_callback, |
| 888 | ab, |
| 889 | NULL ); |
| 890 | if (ACPI_FAILURE(status)) { |
| 891 | dbg("acpi_shpchprm:%s walk for _SUN on pci bridge seg:bus(%x:%x) fail=0x%x\n", path_name, ab->seg, ab->bus, status); |
| 892 | return -1; |
| 893 | } |
| 894 | |
| 895 | return 0; |
| 896 | } |
| 897 | |
| 898 | static void build_a_bridge( |
| 899 | struct acpi_bridge *pab, |
| 900 | struct acpi_bridge *ab |
| 901 | ) |
| 902 | { |
| 903 | u8 *path_name = acpi_path_name(ab->handle); |
| 904 | |
| 905 | shpchprm_acpi_register_a_bridge (&acpi_bridges_head, pab, ab); |
| 906 | |
| 907 | switch (ab->type) { |
| 908 | case BRIDGE_TYPE_HOST: |
| 909 | dbg("acpi_shpchprm: Registered PCI HOST Bridge(%02x) on s:b:d:f(%02x:%02x:%02x:%02x) [%s]\n", |
| 910 | ab->bus, ab->seg, ab->pbus, ab->pdevice, ab->pfunction, path_name); |
| 911 | break; |
| 912 | case BRIDGE_TYPE_P2P: |
| 913 | dbg("acpi_shpchprm: Registered PCI P2P Bridge(%02x-%02x) on s:b:d:f(%02x:%02x:%02x:%02x) [%s]\n", |
| 914 | ab->pbus, ab->bus, ab->seg, ab->pbus, ab->pdevice, ab->pfunction, path_name); |
| 915 | break; |
| 916 | }; |
| 917 | |
| 918 | /* build any immediate PHP slots under this pci bridge */ |
| 919 | shpchprm_acpi_build_php_slots(ab, 1); |
| 920 | } |
| 921 | |
| 922 | static struct acpi_bridge * add_p2p_bridge( |
| 923 | acpi_handle handle, |
| 924 | struct acpi_bridge *pab, /* parent */ |
| 925 | ulong adr |
| 926 | ) |
| 927 | { |
| 928 | struct acpi_bridge *ab; |
| 929 | struct pci_dev *pdev; |
| 930 | ulong devnum, funcnum; |
| 931 | u8 *path_name = acpi_path_name(handle); |
| 932 | |
| 933 | ab = (struct acpi_bridge *) kmalloc (sizeof(struct acpi_bridge), GFP_KERNEL); |
| 934 | if (!ab) { |
| 935 | err("acpi_shpchprm: alloc for ab fail\n"); |
| 936 | return NULL; |
| 937 | } |
| 938 | memset(ab, 0, sizeof(struct acpi_bridge)); |
| 939 | |
| 940 | devnum = (adr >> 16) & 0xffff; |
| 941 | funcnum = adr & 0xffff; |
| 942 | |
| 943 | pdev = pci_find_slot(pab->bus, PCI_DEVFN(devnum, funcnum)); |
| 944 | if (!pdev || !pdev->subordinate) { |
| 945 | err("acpi_shpchprm:%s is not a P2P Bridge\n", path_name); |
| 946 | kfree(ab); |
| 947 | return NULL; |
| 948 | } |
| 949 | |
| 950 | ab->handle = handle; |
| 951 | ab->seg = pab->seg; |
| 952 | ab->pbus = pab->bus; /* or pdev->bus->number */ |
| 953 | ab->pdevice = devnum; /* or PCI_SLOT(pdev->devfn) */ |
| 954 | ab->pfunction = funcnum; /* or PCI_FUNC(pdev->devfn) */ |
| 955 | ab->bus = pdev->subordinate->number; |
| 956 | ab->scanned = 0; |
| 957 | ab->type = BRIDGE_TYPE_P2P; |
| 958 | |
| 959 | dbg("acpi_shpchprm: P2P(%x-%x) on pci=b:d:f(%x:%x:%x) acpi=b:d:f(%x:%x:%x) [%s]\n", |
| 960 | pab->bus, ab->bus, pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), |
| 961 | pab->bus, (u32)devnum, (u32)funcnum, path_name); |
| 962 | |
| 963 | build_a_bridge(pab, ab); |
| 964 | |
| 965 | return ab; |
| 966 | } |
| 967 | |
| 968 | static acpi_status scan_p2p_bridge( |
| 969 | acpi_handle handle, |
| 970 | u32 Level, |
| 971 | void *context, |
| 972 | void **retval |
| 973 | ) |
| 974 | { |
| 975 | struct acpi_bridge *pab = (struct acpi_bridge *)context; |
| 976 | struct acpi_bridge *ab; |
| 977 | acpi_status status; |
| 978 | ulong adr = 0; |
| 979 | u8 *path_name = acpi_path_name(handle); |
| 980 | ulong devnum, funcnum; |
| 981 | struct pci_dev *pdev; |
| 982 | |
| 983 | /* get device, function */ |
| 984 | status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr); |
| 985 | if (ACPI_FAILURE(status)) { |
| 986 | if (status != AE_NOT_FOUND) |
| 987 | err("acpi_shpchprm:%s _ADR fail=0x%x\n", path_name, status); |
| 988 | return AE_OK; |
| 989 | } |
| 990 | |
| 991 | devnum = (adr >> 16) & 0xffff; |
| 992 | funcnum = adr & 0xffff; |
| 993 | |
| 994 | pdev = pci_find_slot(pab->bus, PCI_DEVFN(devnum, funcnum)); |
| 995 | if (!pdev) |
| 996 | return AE_OK; |
| 997 | if (!pdev->subordinate) |
| 998 | return AE_OK; |
| 999 | |
| 1000 | ab = add_p2p_bridge(handle, pab, adr); |
| 1001 | if (ab) { |
| 1002 | status = acpi_walk_namespace ( ACPI_TYPE_DEVICE, |
| 1003 | handle, |
| 1004 | (u32)1, |
| 1005 | scan_p2p_bridge, |
| 1006 | ab, |
| 1007 | NULL); |
| 1008 | if (ACPI_FAILURE(status)) |
| 1009 | dbg("acpi_shpchprm:%s find_p2p fail=0x%x\n", path_name, status); |
| 1010 | } |
| 1011 | |
| 1012 | return AE_OK; |
| 1013 | } |
| 1014 | |
| 1015 | static struct acpi_bridge * add_host_bridge( |
| 1016 | acpi_handle handle, |
| 1017 | ulong segnum, |
| 1018 | ulong busnum |
| 1019 | ) |
| 1020 | { |
| 1021 | ulong adr = 0; |
| 1022 | acpi_status status; |
| 1023 | struct acpi_bridge *ab; |
| 1024 | u8 *path_name = acpi_path_name(handle); |
| 1025 | |
| 1026 | /* get device, function: host br adr is always 0000 though. */ |
| 1027 | status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &adr); |
| 1028 | if (ACPI_FAILURE(status)) { |
| 1029 | err("acpi_shpchprm:%s _ADR fail=0x%x\n", path_name, status); |
| 1030 | return NULL; |
| 1031 | } |
| 1032 | dbg("acpi_shpchprm: ROOT PCI seg(0x%x)bus(0x%x)dev(0x%x)func(0x%x) [%s]\n", (u32)segnum, (u32)busnum, |
| 1033 | (u32)(adr >> 16) & 0xffff, (u32)adr & 0xffff, path_name); |
| 1034 | |
| 1035 | ab = (struct acpi_bridge *) kmalloc (sizeof(struct acpi_bridge), GFP_KERNEL); |
| 1036 | if (!ab) { |
| 1037 | err("acpi_shpchprm: alloc for ab fail\n"); |
| 1038 | return NULL; |
| 1039 | } |
| 1040 | memset(ab, 0, sizeof(struct acpi_bridge)); |
| 1041 | |
| 1042 | ab->handle = handle; |
| 1043 | ab->seg = (int)segnum; |
| 1044 | ab->bus = ab->pbus = (int)busnum; |
| 1045 | ab->pdevice = (int)(adr >> 16) & 0xffff; |
| 1046 | ab->pfunction = (int)(adr & 0xffff); |
| 1047 | ab->scanned = 0; |
| 1048 | ab->type = BRIDGE_TYPE_HOST; |
| 1049 | |
| 1050 | /* get root pci bridge's current resources */ |
| 1051 | status = acpi_get_crs(ab); |
| 1052 | if (ACPI_FAILURE(status)) { |
| 1053 | err("acpi_shpchprm:%s evaluate _CRS fail=0x%x\n", path_name, status); |
| 1054 | kfree(ab); |
| 1055 | return NULL; |
| 1056 | } |
| 1057 | build_a_bridge(ab, ab); |
| 1058 | |
| 1059 | return ab; |
| 1060 | } |
| 1061 | |
| 1062 | static acpi_status acpi_scan_from_root_pci_callback ( |
| 1063 | acpi_handle handle, |
| 1064 | u32 Level, |
| 1065 | void *context, |
| 1066 | void **retval |
| 1067 | ) |
| 1068 | { |
| 1069 | ulong segnum = 0; |
| 1070 | ulong busnum = 0; |
| 1071 | acpi_status status; |
| 1072 | struct acpi_bridge *ab; |
| 1073 | u8 *path_name = acpi_path_name(handle); |
| 1074 | |
| 1075 | /* get bus number of this pci root bridge */ |
| 1076 | status = acpi_evaluate_integer(handle, METHOD_NAME__SEG, NULL, &segnum); |
| 1077 | if (ACPI_FAILURE(status)) { |
| 1078 | if (status != AE_NOT_FOUND) { |
| 1079 | err("acpi_shpchprm:%s evaluate _SEG fail=0x%x\n", path_name, status); |
| 1080 | return status; |
| 1081 | } |
| 1082 | segnum = 0; |
| 1083 | } |
| 1084 | |
| 1085 | /* get bus number of this pci root bridge */ |
| 1086 | status = acpi_evaluate_integer(handle, METHOD_NAME__BBN, NULL, &busnum); |
| 1087 | if (ACPI_FAILURE(status)) { |
| 1088 | err("acpi_shpchprm:%s evaluate _BBN fail=0x%x\n", path_name, status); |
| 1089 | return (status); |
| 1090 | } |
| 1091 | |
| 1092 | ab = add_host_bridge(handle, segnum, busnum); |
| 1093 | if (ab) { |
| 1094 | status = acpi_walk_namespace ( ACPI_TYPE_DEVICE, |
| 1095 | handle, |
| 1096 | 1, |
| 1097 | scan_p2p_bridge, |
| 1098 | ab, |
| 1099 | NULL); |
| 1100 | if (ACPI_FAILURE(status)) |
| 1101 | dbg("acpi_shpchprm:%s find_p2p fail=0x%x\n", path_name, status); |
| 1102 | } |
| 1103 | |
| 1104 | return AE_OK; |
| 1105 | } |
| 1106 | |
| 1107 | static int shpchprm_acpi_scan_pci (void) |
| 1108 | { |
| 1109 | acpi_status status; |
| 1110 | |
| 1111 | /* |
| 1112 | * TBD: traverse LDM device tree with the help of |
| 1113 | * unified ACPI augmented for php device population. |
| 1114 | */ |
| 1115 | status = acpi_get_devices ( PCI_ROOT_HID_STRING, |
| 1116 | acpi_scan_from_root_pci_callback, |
| 1117 | NULL, |
| 1118 | NULL ); |
| 1119 | if (ACPI_FAILURE(status)) { |
| 1120 | err("acpi_shpchprm:get_device PCI ROOT HID fail=0x%x\n", status); |
| 1121 | return -1; |
| 1122 | } |
| 1123 | |
| 1124 | return 0; |
| 1125 | } |
| 1126 | |
| 1127 | int shpchprm_init(enum php_ctlr_type ctlr_type) |
| 1128 | { |
| 1129 | int rc; |
| 1130 | |
| 1131 | if (ctlr_type != PCI) |
| 1132 | return -ENODEV; |
| 1133 | |
| 1134 | dbg("shpchprm ACPI init <enter>\n"); |
| 1135 | acpi_bridges_head = NULL; |
| 1136 | |
| 1137 | /* construct PCI bus:device tree of acpi_handles */ |
| 1138 | rc = shpchprm_acpi_scan_pci(); |
| 1139 | if (rc) |
| 1140 | return rc; |
| 1141 | |
| 1142 | dbg("shpchprm ACPI init %s\n", (rc)?"fail":"success"); |
| 1143 | return rc; |
| 1144 | } |
| 1145 | |
| 1146 | static void free_a_slot(struct acpi_php_slot *aps) |
| 1147 | { |
| 1148 | dbg(" free a php func of slot(0x%02x) on PCI b:d:f=0x%02x:%02x:%02x\n", aps->sun, aps->bus, aps->dev, aps->fun); |
| 1149 | |
| 1150 | free_pci_resource (aps->io_head); |
| 1151 | free_pci_resource (aps->bus_head); |
| 1152 | free_pci_resource (aps->mem_head); |
| 1153 | free_pci_resource (aps->p_mem_head); |
| 1154 | |
| 1155 | kfree(aps); |
| 1156 | } |
| 1157 | |
| 1158 | static void free_a_bridge( struct acpi_bridge *ab) |
| 1159 | { |
| 1160 | struct acpi_php_slot *aps, *next; |
| 1161 | |
| 1162 | switch (ab->type) { |
| 1163 | case BRIDGE_TYPE_HOST: |
| 1164 | dbg("Free ACPI PCI HOST Bridge(%x) [%s] on s:b:d:f(%x:%x:%x:%x)\n", |
| 1165 | ab->bus, acpi_path_name(ab->handle), ab->seg, ab->pbus, ab->pdevice, ab->pfunction); |
| 1166 | break; |
| 1167 | case BRIDGE_TYPE_P2P: |
| 1168 | dbg("Free ACPI PCI P2P Bridge(%x-%x) [%s] on s:b:d:f(%x:%x:%x:%x)\n", |
| 1169 | ab->pbus, ab->bus, acpi_path_name(ab->handle), ab->seg, ab->pbus, ab->pdevice, ab->pfunction); |
| 1170 | break; |
| 1171 | }; |
| 1172 | |
| 1173 | /* free slots first */ |
| 1174 | for (aps = ab->slots; aps; aps = next) { |
| 1175 | next = aps->next; |
| 1176 | free_a_slot(aps); |
| 1177 | } |
| 1178 | |
| 1179 | free_pci_resource (ab->io_head); |
| 1180 | free_pci_resource (ab->tio_head); |
| 1181 | free_pci_resource (ab->bus_head); |
| 1182 | free_pci_resource (ab->tbus_head); |
| 1183 | free_pci_resource (ab->mem_head); |
| 1184 | free_pci_resource (ab->tmem_head); |
| 1185 | free_pci_resource (ab->p_mem_head); |
| 1186 | free_pci_resource (ab->tp_mem_head); |
| 1187 | |
| 1188 | kfree(ab); |
| 1189 | } |
| 1190 | |
| 1191 | static void shpchprm_free_bridges ( struct acpi_bridge *ab) |
| 1192 | { |
| 1193 | if (!ab) |
| 1194 | return; |
| 1195 | |
| 1196 | if (ab->child) |
| 1197 | shpchprm_free_bridges (ab->child); |
| 1198 | |
| 1199 | if (ab->next) |
| 1200 | shpchprm_free_bridges (ab->next); |
| 1201 | |
| 1202 | free_a_bridge(ab); |
| 1203 | } |
| 1204 | |
| 1205 | void shpchprm_cleanup(void) |
| 1206 | { |
| 1207 | shpchprm_free_bridges (acpi_bridges_head); |
| 1208 | } |
| 1209 | |
| 1210 | static int get_number_of_slots ( |
| 1211 | struct acpi_bridge *ab, |
| 1212 | int selfonly |
| 1213 | ) |
| 1214 | { |
| 1215 | struct acpi_php_slot *aps; |
| 1216 | int prev_slot = -1; |
| 1217 | int slot_num = 0; |
| 1218 | |
| 1219 | for ( aps = ab->slots; aps; aps = aps->next) |
| 1220 | if (aps->dev != prev_slot) { |
| 1221 | prev_slot = aps->dev; |
| 1222 | slot_num++; |
| 1223 | } |
| 1224 | |
| 1225 | if (ab->child) |
| 1226 | slot_num += get_number_of_slots (ab->child, 0); |
| 1227 | |
| 1228 | if (selfonly) |
| 1229 | return slot_num; |
| 1230 | |
| 1231 | if (ab->next) |
| 1232 | slot_num += get_number_of_slots (ab->next, 0); |
| 1233 | |
| 1234 | return slot_num; |
| 1235 | } |
| 1236 | |
| 1237 | static int print_acpi_resources (struct acpi_bridge *ab) |
| 1238 | { |
| 1239 | struct acpi_php_slot *aps; |
| 1240 | int i; |
| 1241 | |
| 1242 | switch (ab->type) { |
| 1243 | case BRIDGE_TYPE_HOST: |
| 1244 | dbg("PCI HOST Bridge (%x) [%s]\n", ab->bus, acpi_path_name(ab->handle)); |
| 1245 | break; |
| 1246 | case BRIDGE_TYPE_P2P: |
| 1247 | dbg("PCI P2P Bridge (%x-%x) [%s]\n", ab->pbus, ab->bus, acpi_path_name(ab->handle)); |
| 1248 | break; |
| 1249 | }; |
| 1250 | |
| 1251 | print_pci_resources (ab); |
| 1252 | |
| 1253 | for ( i = -1, aps = ab->slots; aps; aps = aps->next) { |
| 1254 | if (aps->dev == i) |
| 1255 | continue; |
| 1256 | dbg(" Slot sun(%x) s:b:d:f(%02x:%02x:%02x:%02x)\n", aps->sun, aps->seg, aps->bus, aps->dev, aps->fun); |
| 1257 | print_slot_resources(aps); |
| 1258 | i = aps->dev; |
| 1259 | } |
| 1260 | |
| 1261 | if (ab->child) |
| 1262 | print_acpi_resources (ab->child); |
| 1263 | |
| 1264 | if (ab->next) |
| 1265 | print_acpi_resources (ab->next); |
| 1266 | |
| 1267 | return 0; |
| 1268 | } |
| 1269 | |
| 1270 | int shpchprm_print_pirt(void) |
| 1271 | { |
| 1272 | dbg("SHPCHPRM ACPI Slots\n"); |
| 1273 | if (acpi_bridges_head) |
| 1274 | print_acpi_resources (acpi_bridges_head); |
| 1275 | return 0; |
| 1276 | } |
| 1277 | |
| 1278 | static struct acpi_php_slot * get_acpi_slot ( |
| 1279 | struct acpi_bridge *ab, |
| 1280 | u32 sun |
| 1281 | ) |
| 1282 | { |
| 1283 | struct acpi_php_slot *aps = NULL; |
| 1284 | |
| 1285 | for ( aps = ab->slots; aps; aps = aps->next) |
| 1286 | if (aps->sun == sun) |
| 1287 | return aps; |
| 1288 | |
| 1289 | if (!aps && ab->child) { |
| 1290 | aps = (struct acpi_php_slot *)get_acpi_slot (ab->child, sun); |
| 1291 | if (aps) |
| 1292 | return aps; |
| 1293 | } |
| 1294 | |
| 1295 | if (!aps && ab->next) { |
| 1296 | aps = (struct acpi_php_slot *)get_acpi_slot (ab->next, sun); |
| 1297 | if (aps) |
| 1298 | return aps; |
| 1299 | } |
| 1300 | |
| 1301 | return aps; |
| 1302 | |
| 1303 | } |
| 1304 | |
| 1305 | #if 0 |
| 1306 | static void * shpchprm_get_slot(struct slot *slot) |
| 1307 | { |
| 1308 | struct acpi_bridge *ab = acpi_bridges_head; |
| 1309 | struct acpi_php_slot *aps = get_acpi_slot (ab, slot->number); |
| 1310 | |
| 1311 | aps->slot = slot; |
| 1312 | |
| 1313 | dbg("Got acpi slot sun(%x): s:b:d:f(%x:%x:%x:%x)\n", aps->sun, aps->seg, aps->bus, aps->dev, aps->fun); |
| 1314 | |
| 1315 | return (void *)aps; |
| 1316 | } |
| 1317 | #endif |
| 1318 | |
| 1319 | static void shpchprm_dump_func_res( struct pci_func *fun) |
| 1320 | { |
| 1321 | struct pci_func *func = fun; |
| 1322 | |
| 1323 | if (func->bus_head) { |
| 1324 | dbg(": BUS Resources:\n"); |
| 1325 | print_pci_resource (func->bus_head); |
| 1326 | } |
| 1327 | if (func->io_head) { |
| 1328 | dbg(": IO Resources:\n"); |
| 1329 | print_pci_resource (func->io_head); |
| 1330 | } |
| 1331 | if (func->mem_head) { |
| 1332 | dbg(": MEM Resources:\n"); |
| 1333 | print_pci_resource (func->mem_head); |
| 1334 | } |
| 1335 | if (func->p_mem_head) { |
| 1336 | dbg(": PMEM Resources:\n"); |
| 1337 | print_pci_resource (func->p_mem_head); |
| 1338 | } |
| 1339 | } |
| 1340 | |
| 1341 | static void shpchprm_dump_ctrl_res( struct controller *ctlr) |
| 1342 | { |
| 1343 | struct controller *ctrl = ctlr; |
| 1344 | |
| 1345 | if (ctrl->bus_head) { |
| 1346 | dbg(": BUS Resources:\n"); |
| 1347 | print_pci_resource (ctrl->bus_head); |
| 1348 | } |
| 1349 | if (ctrl->io_head) { |
| 1350 | dbg(": IO Resources:\n"); |
| 1351 | print_pci_resource (ctrl->io_head); |
| 1352 | } |
| 1353 | if (ctrl->mem_head) { |
| 1354 | dbg(": MEM Resources:\n"); |
| 1355 | print_pci_resource (ctrl->mem_head); |
| 1356 | } |
| 1357 | if (ctrl->p_mem_head) { |
| 1358 | dbg(": PMEM Resources:\n"); |
| 1359 | print_pci_resource (ctrl->p_mem_head); |
| 1360 | } |
| 1361 | } |
| 1362 | |
| 1363 | static int shpchprm_get_used_resources ( |
| 1364 | struct controller *ctrl, |
| 1365 | struct pci_func *func |
| 1366 | ) |
| 1367 | { |
| 1368 | return shpchp_save_used_resources (ctrl, func, !DISABLE_CARD); |
| 1369 | } |
| 1370 | |
| 1371 | static int configure_existing_function( |
| 1372 | struct controller *ctrl, |
| 1373 | struct pci_func *func |
| 1374 | ) |
| 1375 | { |
| 1376 | int rc; |
| 1377 | |
| 1378 | /* see how much resources the func has used. */ |
| 1379 | rc = shpchprm_get_used_resources (ctrl, func); |
| 1380 | |
| 1381 | if (!rc) { |
| 1382 | /* subtract the resources used by the func from ctrl resources */ |
| 1383 | rc = shpchprm_delete_resources (&ctrl->bus_head, func->bus_head); |
| 1384 | rc |= shpchprm_delete_resources (&ctrl->io_head, func->io_head); |
| 1385 | rc |= shpchprm_delete_resources (&ctrl->mem_head, func->mem_head); |
| 1386 | rc |= shpchprm_delete_resources (&ctrl->p_mem_head, func->p_mem_head); |
| 1387 | if (rc) |
| 1388 | warn("aCEF: cannot del used resources\n"); |
| 1389 | } else |
| 1390 | err("aCEF: cannot get used resources\n"); |
| 1391 | |
| 1392 | return rc; |
| 1393 | } |
| 1394 | |
| 1395 | static int bind_pci_resources_to_slots ( struct controller *ctrl) |
| 1396 | { |
| 1397 | struct pci_func *func, new_func; |
| 1398 | int busn = ctrl->slot_bus; |
| 1399 | int devn, funn; |
| 1400 | u32 vid; |
| 1401 | |
| 1402 | for (devn = 0; devn < 32; devn++) { |
| 1403 | for (funn = 0; funn < 8; funn++) { |
| 1404 | /* |
| 1405 | if (devn == ctrl->device && funn == ctrl->function) |
| 1406 | continue; |
| 1407 | */ |
| 1408 | /* find out if this entry is for an occupied slot */ |
| 1409 | vid = 0xFFFFFFFF; |
| 1410 | pci_bus_read_config_dword(ctrl->pci_dev->subordinate, PCI_DEVFN(devn, funn), PCI_VENDOR_ID, &vid); |
| 1411 | |
| 1412 | if (vid != 0xFFFFFFFF) { |
| 1413 | func = shpchp_slot_find(busn, devn, funn); |
| 1414 | if (!func) { |
| 1415 | memset(&new_func, 0, sizeof(struct pci_func)); |
| 1416 | new_func.bus = busn; |
| 1417 | new_func.device = devn; |
| 1418 | new_func.function = funn; |
| 1419 | new_func.is_a_board = 1; |
| 1420 | configure_existing_function(ctrl, &new_func); |
| 1421 | shpchprm_dump_func_res(&new_func); |
| 1422 | } else { |
| 1423 | configure_existing_function(ctrl, func); |
| 1424 | shpchprm_dump_func_res(func); |
| 1425 | } |
| 1426 | dbg("aCCF:existing PCI 0x%x Func ResourceDump\n", ctrl->bus); |
| 1427 | } |
| 1428 | } |
| 1429 | } |
| 1430 | |
| 1431 | return 0; |
| 1432 | } |
| 1433 | |
| 1434 | static int bind_pci_resources( |
| 1435 | struct controller *ctrl, |
| 1436 | struct acpi_bridge *ab |
| 1437 | ) |
| 1438 | { |
| 1439 | int status = 0; |
| 1440 | |
| 1441 | if (ab->bus_head) { |
| 1442 | dbg("bapr: BUS Resources add on PCI 0x%x\n", ab->bus); |
| 1443 | status = shpchprm_add_resources (&ctrl->bus_head, ab->bus_head); |
| 1444 | if (shpchprm_delete_resources (&ab->bus_head, ctrl->bus_head)) |
| 1445 | warn("bapr: cannot sub BUS Resource on PCI 0x%x\n", ab->bus); |
| 1446 | if (status) { |
| 1447 | err("bapr: BUS Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status); |
| 1448 | return status; |
| 1449 | } |
| 1450 | } else |
| 1451 | info("bapr: No BUS Resource on PCI 0x%x.\n", ab->bus); |
| 1452 | |
| 1453 | if (ab->io_head) { |
| 1454 | dbg("bapr: IO Resources add on PCI 0x%x\n", ab->bus); |
| 1455 | status = shpchprm_add_resources (&ctrl->io_head, ab->io_head); |
| 1456 | if (shpchprm_delete_resources (&ab->io_head, ctrl->io_head)) |
| 1457 | warn("bapr: cannot sub IO Resource on PCI 0x%x\n", ab->bus); |
| 1458 | if (status) { |
| 1459 | err("bapr: IO Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status); |
| 1460 | return status; |
| 1461 | } |
| 1462 | } else |
| 1463 | info("bapr: No IO Resource on PCI 0x%x.\n", ab->bus); |
| 1464 | |
| 1465 | if (ab->mem_head) { |
| 1466 | dbg("bapr: MEM Resources add on PCI 0x%x\n", ab->bus); |
| 1467 | status = shpchprm_add_resources (&ctrl->mem_head, ab->mem_head); |
| 1468 | if (shpchprm_delete_resources (&ab->mem_head, ctrl->mem_head)) |
| 1469 | warn("bapr: cannot sub MEM Resource on PCI 0x%x\n", ab->bus); |
| 1470 | if (status) { |
| 1471 | err("bapr: MEM Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status); |
| 1472 | return status; |
| 1473 | } |
| 1474 | } else |
| 1475 | info("bapr: No MEM Resource on PCI 0x%x.\n", ab->bus); |
| 1476 | |
| 1477 | if (ab->p_mem_head) { |
| 1478 | dbg("bapr: PMEM Resources add on PCI 0x%x\n", ab->bus); |
| 1479 | status = shpchprm_add_resources (&ctrl->p_mem_head, ab->p_mem_head); |
| 1480 | if (shpchprm_delete_resources (&ab->p_mem_head, ctrl->p_mem_head)) |
| 1481 | warn("bapr: cannot sub PMEM Resource on PCI 0x%x\n", ab->bus); |
| 1482 | if (status) { |
| 1483 | err("bapr: PMEM Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status); |
| 1484 | return status; |
| 1485 | } |
| 1486 | } else |
| 1487 | info("bapr: No PMEM Resource on PCI 0x%x.\n", ab->bus); |
| 1488 | |
| 1489 | return status; |
| 1490 | } |
| 1491 | |
| 1492 | static int no_pci_resources( struct acpi_bridge *ab) |
| 1493 | { |
| 1494 | return !(ab->p_mem_head || ab->mem_head || ab->io_head || ab->bus_head); |
| 1495 | } |
| 1496 | |
| 1497 | static int find_pci_bridge_resources ( |
| 1498 | struct controller *ctrl, |
| 1499 | struct acpi_bridge *ab |
| 1500 | ) |
| 1501 | { |
| 1502 | int rc = 0; |
| 1503 | struct pci_func func; |
| 1504 | |
| 1505 | memset(&func, 0, sizeof(struct pci_func)); |
| 1506 | |
| 1507 | func.bus = ab->pbus; |
| 1508 | func.device = ab->pdevice; |
| 1509 | func.function = ab->pfunction; |
| 1510 | func.is_a_board = 1; |
| 1511 | |
| 1512 | /* Get used resources for this PCI bridge */ |
| 1513 | rc = shpchp_save_used_resources (ctrl, &func, !DISABLE_CARD); |
| 1514 | |
| 1515 | ab->io_head = func.io_head; |
| 1516 | ab->mem_head = func.mem_head; |
| 1517 | ab->p_mem_head = func.p_mem_head; |
| 1518 | ab->bus_head = func.bus_head; |
| 1519 | if (ab->bus_head) |
| 1520 | shpchprm_delete_resource(&ab->bus_head, ctrl->bus, 1); |
| 1521 | |
| 1522 | return rc; |
| 1523 | } |
| 1524 | |
| 1525 | static int get_pci_resources_from_bridge( |
| 1526 | struct controller *ctrl, |
| 1527 | struct acpi_bridge *ab |
| 1528 | ) |
| 1529 | { |
| 1530 | int rc = 0; |
| 1531 | |
| 1532 | dbg("grfb: Get Resources for PCI 0x%x from actual PCI bridge 0x%x.\n", ctrl->bus, ab->bus); |
| 1533 | |
| 1534 | rc = find_pci_bridge_resources (ctrl, ab); |
| 1535 | |
| 1536 | shpchp_resource_sort_and_combine(&ab->bus_head); |
| 1537 | shpchp_resource_sort_and_combine(&ab->io_head); |
| 1538 | shpchp_resource_sort_and_combine(&ab->mem_head); |
| 1539 | shpchp_resource_sort_and_combine(&ab->p_mem_head); |
| 1540 | |
| 1541 | shpchprm_add_resources (&ab->tbus_head, ab->bus_head); |
| 1542 | shpchprm_add_resources (&ab->tio_head, ab->io_head); |
| 1543 | shpchprm_add_resources (&ab->tmem_head, ab->mem_head); |
| 1544 | shpchprm_add_resources (&ab->tp_mem_head, ab->p_mem_head); |
| 1545 | |
| 1546 | return rc; |
| 1547 | } |
| 1548 | |
| 1549 | static int get_pci_resources( |
| 1550 | struct controller *ctrl, |
| 1551 | struct acpi_bridge *ab |
| 1552 | ) |
| 1553 | { |
| 1554 | int rc = 0; |
| 1555 | |
| 1556 | if (no_pci_resources(ab)) { |
| 1557 | dbg("spbr:PCI 0x%x has no resources. Get parent resources.\n", ab->bus); |
| 1558 | rc = get_pci_resources_from_bridge(ctrl, ab); |
| 1559 | } |
| 1560 | |
| 1561 | return rc; |
| 1562 | } |
| 1563 | |
| 1564 | int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum) |
| 1565 | { |
| 1566 | int offset = devnum - ctrl->slot_device_offset; |
| 1567 | |
| 1568 | dbg("%s: ctrl->slot_num_inc %d, offset %d\n", __FUNCTION__, ctrl->slot_num_inc, offset); |
| 1569 | *sun = (u8) (ctrl->first_slot + ctrl->slot_num_inc *offset); |
| 1570 | return 0; |
| 1571 | } |
| 1572 | |
| 1573 | /* |
| 1574 | * Get resources for this ctrl. |
| 1575 | * 1. get total resources from ACPI _CRS or bridge (this ctrl) |
| 1576 | * 2. find used resources of existing adapters |
| 1577 | * 3. subtract used resources from total resources |
| 1578 | */ |
| 1579 | int shpchprm_find_available_resources( struct controller *ctrl) |
| 1580 | { |
| 1581 | int rc = 0; |
| 1582 | struct acpi_bridge *ab; |
| 1583 | |
| 1584 | ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->pci_dev->subordinate->number); |
| 1585 | if (!ab) { |
| 1586 | err("pfar:cannot locate acpi bridge of PCI 0x%x.\n", ctrl->pci_dev->subordinate->number); |
| 1587 | return -1; |
| 1588 | } |
| 1589 | if (no_pci_resources(ab)) { |
| 1590 | rc = get_pci_resources(ctrl, ab); |
| 1591 | if (rc) { |
| 1592 | err("pfar:cannot get pci resources of PCI 0x%x.\n",ctrl->pci_dev->subordinate->number); |
| 1593 | return -1; |
| 1594 | } |
| 1595 | } |
| 1596 | |
| 1597 | rc = bind_pci_resources(ctrl, ab); |
| 1598 | dbg("pfar:pre-Bind PCI 0x%x Ctrl Resource Dump\n", ctrl->pci_dev->subordinate->number); |
| 1599 | shpchprm_dump_ctrl_res(ctrl); |
| 1600 | |
| 1601 | bind_pci_resources_to_slots (ctrl); |
| 1602 | |
| 1603 | dbg("pfar:post-Bind PCI 0x%x Ctrl Resource Dump\n", ctrl->pci_dev->subordinate->number); |
| 1604 | shpchprm_dump_ctrl_res(ctrl); |
| 1605 | |
| 1606 | return rc; |
| 1607 | } |
| 1608 | |
| 1609 | int shpchprm_set_hpp( |
| 1610 | struct controller *ctrl, |
| 1611 | struct pci_func *func, |
| 1612 | u8 card_type |
| 1613 | ) |
| 1614 | { |
| 1615 | struct acpi_bridge *ab; |
| 1616 | struct pci_bus lpci_bus, *pci_bus; |
| 1617 | int rc = 0; |
| 1618 | unsigned int devfn; |
| 1619 | u8 cls= 0x08; /* default cache line size */ |
| 1620 | u8 lt = 0x40; /* default latency timer */ |
| 1621 | u8 ep = 0; |
| 1622 | u8 es = 0; |
| 1623 | |
| 1624 | memcpy(&lpci_bus, ctrl->pci_bus, sizeof(lpci_bus)); |
| 1625 | pci_bus = &lpci_bus; |
| 1626 | pci_bus->number = func->bus; |
| 1627 | devfn = PCI_DEVFN(func->device, func->function); |
| 1628 | |
Kenji Kaneshige | 7a8cb86 | 2005-05-23 19:50:32 +0900 | [diff] [blame^] | 1629 | ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->slot_bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | |
| 1631 | if (ab) { |
| 1632 | if (ab->_hpp) { |
| 1633 | lt = (u8)ab->_hpp->latency_timer; |
| 1634 | cls = (u8)ab->_hpp->cache_line_size; |
| 1635 | ep = (u8)ab->_hpp->enable_perr; |
| 1636 | es = (u8)ab->_hpp->enable_serr; |
| 1637 | } else |
| 1638 | dbg("_hpp: no _hpp for B/D/F=%#x/%#x/%#x. use default value\n", func->bus, func->device, func->function); |
| 1639 | } else |
| 1640 | dbg("_hpp: no acpi bridge for B/D/F = %#x/%#x/%#x. use default value\n", func->bus, func->device, func->function); |
| 1641 | |
| 1642 | |
| 1643 | if (card_type == PCI_HEADER_TYPE_BRIDGE) { |
| 1644 | /* set subordinate Latency Timer */ |
| 1645 | rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_SEC_LATENCY_TIMER, lt); |
| 1646 | } |
| 1647 | |
| 1648 | /* set base Latency Timer */ |
| 1649 | rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_LATENCY_TIMER, lt); |
| 1650 | dbg(" set latency timer =0x%02x: %x\n", lt, rc); |
| 1651 | |
| 1652 | rc |= pci_bus_write_config_byte(pci_bus, devfn, PCI_CACHE_LINE_SIZE, cls); |
| 1653 | dbg(" set cache_line_size=0x%02x: %x\n", cls, rc); |
| 1654 | |
| 1655 | return rc; |
| 1656 | } |
| 1657 | |
| 1658 | void shpchprm_enable_card( |
| 1659 | struct controller *ctrl, |
| 1660 | struct pci_func *func, |
| 1661 | u8 card_type) |
| 1662 | { |
| 1663 | u16 command, cmd, bcommand, bcmd; |
| 1664 | struct pci_bus lpci_bus, *pci_bus; |
| 1665 | struct acpi_bridge *ab; |
| 1666 | unsigned int devfn; |
| 1667 | int rc; |
| 1668 | |
| 1669 | memcpy(&lpci_bus, ctrl->pci_bus, sizeof(lpci_bus)); |
| 1670 | pci_bus = &lpci_bus; |
| 1671 | pci_bus->number = func->bus; |
| 1672 | devfn = PCI_DEVFN(func->device, func->function); |
| 1673 | |
| 1674 | rc = pci_bus_read_config_word(pci_bus, devfn, PCI_COMMAND, &command); |
| 1675 | |
| 1676 | if (card_type == PCI_HEADER_TYPE_BRIDGE) { |
| 1677 | rc = pci_bus_read_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, &bcommand); |
| 1678 | } |
| 1679 | |
| 1680 | cmd = command = command | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE |
| 1681 | | PCI_COMMAND_IO | PCI_COMMAND_MEMORY; |
| 1682 | bcmd = bcommand = bcommand | PCI_BRIDGE_CTL_NO_ISA; |
| 1683 | |
| 1684 | ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->bus); |
| 1685 | if (ab) { |
| 1686 | if (ab->_hpp) { |
| 1687 | if (ab->_hpp->enable_perr) { |
| 1688 | command |= PCI_COMMAND_PARITY; |
| 1689 | bcommand |= PCI_BRIDGE_CTL_PARITY; |
| 1690 | } else { |
| 1691 | command &= ~PCI_COMMAND_PARITY; |
| 1692 | bcommand &= ~PCI_BRIDGE_CTL_PARITY; |
| 1693 | } |
| 1694 | if (ab->_hpp->enable_serr) { |
| 1695 | command |= PCI_COMMAND_SERR; |
| 1696 | bcommand |= PCI_BRIDGE_CTL_SERR; |
| 1697 | } else { |
| 1698 | command &= ~PCI_COMMAND_SERR; |
| 1699 | bcommand &= ~PCI_BRIDGE_CTL_SERR; |
| 1700 | } |
| 1701 | } else |
| 1702 | dbg("no _hpp for B/D/F = %#x/%#x/%#x.\n", func->bus, func->device, func->function); |
| 1703 | } else |
| 1704 | dbg("no acpi bridge for B/D/F = %#x/%#x/%#x.\n", func->bus, func->device, func->function); |
| 1705 | |
| 1706 | if (command != cmd) { |
| 1707 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_COMMAND, command); |
| 1708 | } |
| 1709 | if ((card_type == PCI_HEADER_TYPE_BRIDGE) && (bcommand != bcmd)) { |
| 1710 | rc = pci_bus_write_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, bcommand); |
| 1711 | } |
| 1712 | } |
| 1713 | |