1 /* 2 * rsrc_nonstatic.c -- Resource management routines for !SS_CAP_STATIC_MAP sockets 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * The initial developer of the original code is David A. Hinds 9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds 10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. 11 * 12 * (C) 1999 David A. Hinds 13 */ 14 15 #include <linux/config.h> 16 #include <linux/module.h> 17 #include <linux/moduleparam.h> 18 #include <linux/init.h> 19 #include <linux/interrupt.h> 20 #include <linux/kernel.h> 21 #include <linux/errno.h> 22 #include <linux/types.h> 23 #include <linux/slab.h> 24 #include <linux/ioport.h> 25 #include <linux/timer.h> 26 #include <linux/pci.h> 27 #include <linux/device.h> 28 29 #include <asm/irq.h> 30 #include <asm/io.h> 31 32 #include <pcmcia/cs_types.h> 33 #include <pcmcia/ss.h> 34 #include <pcmcia/cs.h> 35 #include <pcmcia/bulkmem.h> 36 #include <pcmcia/cistpl.h> 37 #include "cs_internal.h" 38 39 MODULE_AUTHOR("David A. Hinds, Dominik Brodowski"); 40 MODULE_LICENSE("GPL"); 41 42 /* Parameters that can be set with 'insmod' */ 43 44 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) 45 46 INT_MODULE_PARM(probe_mem, 1); /* memory probe? */ 47 #ifdef CONFIG_PCMCIA_PROBE 48 INT_MODULE_PARM(probe_io, 1); /* IO port probe? */ 49 INT_MODULE_PARM(mem_limit, 0x10000); 50 #endif 51 52 /* for io_db and mem_db */ 53 struct resource_map { 54 u_long base, num; 55 struct resource_map *next; 56 }; 57 58 struct socket_data { 59 struct resource_map mem_db; 60 struct resource_map io_db; 61 unsigned int rsrc_mem_probe; 62 }; 63 64 static DECLARE_MUTEX(rsrc_sem); 65 #define MEM_PROBE_LOW (1 << 0) 66 #define MEM_PROBE_HIGH (1 << 1) 67 68 69 /*====================================================================== 70 71 Linux resource management extensions 72 73 ======================================================================*/ 74 75 static struct resource * 76 make_resource(unsigned long b, unsigned long n, int flags, char *name) 77 { 78 struct resource *res = kmalloc(sizeof(*res), GFP_KERNEL); 79 80 if (res) { 81 memset(res, 0, sizeof(*res)); 82 res->name = name; 83 res->start = b; 84 res->end = b + n - 1; 85 res->flags = flags; 86 } 87 return res; 88 } 89 90 static struct resource * 91 claim_region(struct pcmcia_socket *s, unsigned long base, unsigned long size, 92 int type, char *name) 93 { 94 struct resource *res, *parent; 95 96 parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; 97 res = make_resource(base, size, type | IORESOURCE_BUSY, name); 98 99 if (res) { 100 #ifdef CONFIG_PCI 101 if (s && s->cb_dev) 102 parent = pci_find_parent_resource(s->cb_dev, res); 103 #endif 104 if (!parent || request_resource(parent, res)) { 105 kfree(res); 106 res = NULL; 107 } 108 } 109 return res; 110 } 111 112 static void free_region(struct resource *res) 113 { 114 if (res) { 115 release_resource(res); 116 kfree(res); 117 } 118 } 119 120 /*====================================================================== 121 122 These manage the internal databases of available resources. 123 124 ======================================================================*/ 125 126 static int add_interval(struct resource_map *map, u_long base, u_long num) 127 { 128 struct resource_map *p, *q; 129 130 for (p = map; ; p = p->next) { 131 if ((p != map) && (p->base+p->num-1 >= base)) 132 return -1; 133 if ((p->next == map) || (p->next->base > base+num-1)) 134 break; 135 } 136 q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); 137 if (!q) return CS_OUT_OF_RESOURCE; 138 q->base = base; q->num = num; 139 q->next = p->next; p->next = q; 140 return CS_SUCCESS; 141 } 142 143 /*====================================================================*/ 144 145 static int sub_interval(struct resource_map *map, u_long base, u_long num) 146 { 147 struct resource_map *p, *q; 148 149 for (p = map; ; p = q) { 150 q = p->next; 151 if (q == map) 152 break; 153 if ((q->base+q->num > base) && (base+num > q->base)) { 154 if (q->base >= base) { 155 if (q->base+q->num <= base+num) { 156 /* Delete whole block */ 157 p->next = q->next; 158 kfree(q); 159 /* don't advance the pointer yet */ 160 q = p; 161 } else { 162 /* Cut off bit from the front */ 163 q->num = q->base + q->num - base - num; 164 q->base = base + num; 165 } 166 } else if (q->base+q->num <= base+num) { 167 /* Cut off bit from the end */ 168 q->num = base - q->base; 169 } else { 170 /* Split the block into two pieces */ 171 p = kmalloc(sizeof(struct resource_map), GFP_KERNEL); 172 if (!p) return CS_OUT_OF_RESOURCE; 173 p->base = base+num; 174 p->num = q->base+q->num - p->base; 175 q->num = base - q->base; 176 p->next = q->next ; q->next = p; 177 } 178 } 179 } 180 return CS_SUCCESS; 181 } 182 183 /*====================================================================== 184 185 These routines examine a region of IO or memory addresses to 186 determine what ranges might be genuinely available. 187 188 ======================================================================*/ 189 190 #ifdef CONFIG_PCMCIA_PROBE 191 static void do_io_probe(struct pcmcia_socket *s, kio_addr_t base, kio_addr_t num) 192 { 193 struct resource *res; 194 struct socket_data *s_data = s->resource_data; 195 kio_addr_t i, j, bad; 196 int any; 197 u_char *b, hole, most; 198 199 printk(KERN_INFO "cs: IO port probe %#lx-%#lx:", 200 base, base+num-1); 201 202 /* First, what does a floating port look like? */ 203 b = kmalloc(256, GFP_KERNEL); 204 if (!b) { 205 printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes"); 206 return; 207 } 208 memset(b, 0, 256); 209 for (i = base, most = 0; i < base+num; i += 8) { 210 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); 211 if (!res) 212 continue; 213 hole = inb(i); 214 for (j = 1; j < 8; j++) 215 if (inb(i+j) != hole) break; 216 free_region(res); 217 if ((j == 8) && (++b[hole] > b[most])) 218 most = hole; 219 if (b[most] == 127) break; 220 } 221 kfree(b); 222 223 bad = any = 0; 224 for (i = base; i < base+num; i += 8) { 225 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); 226 if (!res) 227 continue; 228 for (j = 0; j < 8; j++) 229 if (inb(i+j) != most) break; 230 free_region(res); 231 if (j < 8) { 232 if (!any) 233 printk(" excluding"); 234 if (!bad) 235 bad = any = i; 236 } else { 237 if (bad) { 238 sub_interval(&s_data->io_db, bad, i-bad); 239 printk(" %#lx-%#lx", bad, i-1); 240 bad = 0; 241 } 242 } 243 } 244 if (bad) { 245 if ((num > 16) && (bad == base) && (i == base+num)) { 246 printk(" nothing: probe failed.\n"); 247 return; 248 } else { 249 sub_interval(&s_data->io_db, bad, i-bad); 250 printk(" %#lx-%#lx", bad, i-1); 251 } 252 } 253 254 printk(any ? "\n" : " clean.\n"); 255 } 256 #endif 257 258 /*====================================================================== 259 260 This is tricky... when we set up CIS memory, we try to validate 261 the memory window space allocations. 262 263 ======================================================================*/ 264 265 /* Validation function for cards with a valid CIS */ 266 static int readable(struct pcmcia_socket *s, struct resource *res, cisinfo_t *info) 267 { 268 int ret = -1; 269 270 s->cis_mem.res = res; 271 s->cis_virt = ioremap(res->start, s->map_size); 272 if (s->cis_virt) { 273 ret = pccard_validate_cis(s, BIND_FN_ALL, info); 274 /* invalidate mapping and CIS cache */ 275 iounmap(s->cis_virt); 276 s->cis_virt = NULL; 277 destroy_cis_cache(s); 278 } 279 s->cis_mem.res = NULL; 280 if ((ret != 0) || (info->Chains == 0)) 281 return 0; 282 return 1; 283 } 284 285 /* Validation function for simple memory cards */ 286 static int checksum(struct pcmcia_socket *s, struct resource *res) 287 { 288 pccard_mem_map map; 289 int i, a = 0, b = -1, d; 290 void __iomem *virt; 291 292 virt = ioremap(res->start, s->map_size); 293 if (virt) { 294 map.map = 0; 295 map.flags = MAP_ACTIVE; 296 map.speed = 0; 297 map.res = res; 298 map.card_start = 0; 299 s->ops->set_mem_map(s, &map); 300 301 /* Don't bother checking every word... */ 302 for (i = 0; i < s->map_size; i += 44) { 303 d = readl(virt+i); 304 a += d; 305 b &= d; 306 } 307 308 map.flags = 0; 309 s->ops->set_mem_map(s, &map); 310 311 iounmap(virt); 312 } 313 314 return (b == -1) ? -1 : (a>>1); 315 } 316 317 static int 318 cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size) 319 { 320 struct resource *res1, *res2; 321 cisinfo_t info1, info2; 322 int ret = 0; 323 324 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); 325 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); 326 327 if (res1 && res2) { 328 ret = readable(s, res1, &info1); 329 ret += readable(s, res2, &info2); 330 } 331 332 free_region(res2); 333 free_region(res1); 334 335 return (ret == 2) && (info1.Chains == info2.Chains); 336 } 337 338 static int 339 checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size) 340 { 341 struct resource *res1, *res2; 342 int a = -1, b = -1; 343 344 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); 345 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); 346 347 if (res1 && res2) { 348 a = checksum(s, res1); 349 b = checksum(s, res2); 350 } 351 352 free_region(res2); 353 free_region(res1); 354 355 return (a == b) && (a >= 0); 356 } 357 358 /*====================================================================== 359 360 The memory probe. If the memory list includes a 64K-aligned block 361 below 1MB, we probe in 64K chunks, and as soon as we accumulate at 362 least mem_limit free space, we quit. 363 364 ======================================================================*/ 365 366 static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) 367 { 368 struct socket_data *s_data = s->resource_data; 369 u_long i, j, bad, fail, step; 370 371 printk(KERN_INFO "cs: memory probe 0x%06lx-0x%06lx:", 372 base, base+num-1); 373 bad = fail = 0; 374 step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); 375 /* don't allow too large steps */ 376 if (step > 0x800000) 377 step = 0x800000; 378 /* cis_readable wants to map 2x map_size */ 379 if (step < 2 * s->map_size) 380 step = 2 * s->map_size; 381 for (i = j = base; i < base+num; i = j + step) { 382 if (!fail) { 383 for (j = i; j < base+num; j += step) { 384 if (cis_readable(s, j, step)) 385 break; 386 } 387 fail = ((i == base) && (j == base+num)); 388 } 389 if (fail) { 390 for (j = i; j < base+num; j += 2*step) 391 if (checksum_match(s, j, step) && 392 checksum_match(s, j + step, step)) 393 break; 394 } 395 if (i != j) { 396 if (!bad) printk(" excluding"); 397 printk(" %#05lx-%#05lx", i, j-1); 398 sub_interval(&s_data->mem_db, i, j-i); 399 bad += j-i; 400 } 401 } 402 printk(bad ? "\n" : " clean.\n"); 403 return (num - bad); 404 } 405 406 #ifdef CONFIG_PCMCIA_PROBE 407 408 static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) 409 { 410 struct socket_data *s_data = s->resource_data; 411 u_long ok; 412 if (m == &s_data->mem_db) 413 return 0; 414 ok = inv_probe(m->next, s); 415 if (ok) { 416 if (m->base >= 0x100000) 417 sub_interval(&s_data->mem_db, m->base, m->num); 418 return ok; 419 } 420 if (m->base < 0x100000) 421 return 0; 422 return do_mem_probe(m->base, m->num, s); 423 } 424 425 static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) 426 { 427 struct resource_map *m, mm; 428 static u_char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; 429 u_long b, i, ok = 0; 430 struct socket_data *s_data = s->resource_data; 431 432 /* We do up to four passes through the list */ 433 if (probe_mask & MEM_PROBE_HIGH) { 434 if (inv_probe(s_data->mem_db.next, s) > 0) 435 return; 436 printk(KERN_NOTICE "cs: warning: no high memory space " 437 "available!\n"); 438 } 439 if ((probe_mask & MEM_PROBE_LOW) == 0) 440 return; 441 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { 442 mm = *m; 443 /* Only probe < 1 MB */ 444 if (mm.base >= 0x100000) continue; 445 if ((mm.base | mm.num) & 0xffff) { 446 ok += do_mem_probe(mm.base, mm.num, s); 447 continue; 448 } 449 /* Special probe for 64K-aligned block */ 450 for (i = 0; i < 4; i++) { 451 b = order[i] << 12; 452 if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { 453 if (ok >= mem_limit) 454 sub_interval(&s_data->mem_db, b, 0x10000); 455 else 456 ok += do_mem_probe(b, 0x10000, s); 457 } 458 } 459 } 460 } 461 462 #else /* CONFIG_PCMCIA_PROBE */ 463 464 static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) 465 { 466 struct resource_map *m, mm; 467 struct socket_data *s_data = s->resource_data; 468 469 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { 470 mm = *m; 471 do_mem_probe(mm.base, mm.num, s); 472 } 473 } 474 475 #endif /* CONFIG_PCMCIA_PROBE */ 476 477 478 /* 479 * Locking note: Must be called with skt_sem held! 480 */ 481 static void pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) 482 { 483 struct socket_data *s_data = s->resource_data; 484 if (probe_mem) { 485 unsigned int probe_mask; 486 487 down(&rsrc_sem); 488 489 probe_mask = MEM_PROBE_LOW; 490 if (s->features & SS_CAP_PAGE_REGS) 491 probe_mask = MEM_PROBE_HIGH; 492 493 if (probe_mask & ~s_data->rsrc_mem_probe) { 494 s_data->rsrc_mem_probe |= probe_mask; 495 496 if (s->state & SOCKET_PRESENT) 497 validate_mem(s, probe_mask); 498 } 499 500 up(&rsrc_sem); 501 } 502 } 503 504 struct pcmcia_align_data { 505 unsigned long mask; 506 unsigned long offset; 507 struct resource_map *map; 508 }; 509 510 static void 511 pcmcia_common_align(void *align_data, struct resource *res, 512 unsigned long size, unsigned long align) 513 { 514 struct pcmcia_align_data *data = align_data; 515 unsigned long start; 516 /* 517 * Ensure that we have the correct start address 518 */ 519 start = (res->start & ~data->mask) + data->offset; 520 if (start < res->start) 521 start += data->mask + 1; 522 res->start = start; 523 } 524 525 static void 526 pcmcia_align(void *align_data, struct resource *res, 527 unsigned long size, unsigned long align) 528 { 529 struct pcmcia_align_data *data = align_data; 530 struct resource_map *m; 531 532 pcmcia_common_align(data, res, size, align); 533 534 for (m = data->map->next; m != data->map; m = m->next) { 535 unsigned long start = m->base; 536 unsigned long end = m->base + m->num - 1; 537 538 /* 539 * If the lower resources are not available, try aligning 540 * to this entry of the resource database to see if it'll 541 * fit here. 542 */ 543 if (res->start < start) { 544 res->start = start; 545 pcmcia_common_align(data, res, size, align); 546 } 547 548 /* 549 * If we're above the area which was passed in, there's 550 * no point proceeding. 551 */ 552 if (res->start >= res->end) 553 break; 554 555 if ((res->start + size - 1) <= end) 556 break; 557 } 558 559 /* 560 * If we failed to find something suitable, ensure we fail. 561 */ 562 if (m == data->map) 563 res->start = res->end; 564 } 565 566 /* 567 * Adjust an existing IO region allocation, but making sure that we don't 568 * encroach outside the resources which the user supplied. 569 */ 570 static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start, 571 unsigned long r_end, struct pcmcia_socket *s) 572 { 573 struct resource_map *m; 574 struct socket_data *s_data = s->resource_data; 575 int ret = -ENOMEM; 576 577 down(&rsrc_sem); 578 for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { 579 unsigned long start = m->base; 580 unsigned long end = m->base + m->num - 1; 581 582 if (start > r_start || r_end > end) 583 continue; 584 585 ret = adjust_resource(res, r_start, r_end - r_start + 1); 586 break; 587 } 588 up(&rsrc_sem); 589 590 return ret; 591 } 592 593 /*====================================================================== 594 595 These find ranges of I/O ports or memory addresses that are not 596 currently allocated by other devices. 597 598 The 'align' field should reflect the number of bits of address 599 that need to be preserved from the initial value of *base. It 600 should be a power of two, greater than or equal to 'num'. A value 601 of 0 means that all bits of *base are significant. *base should 602 also be strictly less than 'align'. 603 604 ======================================================================*/ 605 606 static struct resource *nonstatic_find_io_region(unsigned long base, int num, 607 unsigned long align, struct pcmcia_socket *s) 608 { 609 struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.class_id); 610 struct socket_data *s_data = s->resource_data; 611 struct pcmcia_align_data data; 612 unsigned long min = base; 613 int ret; 614 615 if (align == 0) 616 align = 0x10000; 617 618 data.mask = align - 1; 619 data.offset = base & data.mask; 620 data.map = &s_data->io_db; 621 622 down(&rsrc_sem); 623 #ifdef CONFIG_PCI 624 if (s->cb_dev) { 625 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, 626 min, 0, pcmcia_align, &data); 627 } else 628 #endif 629 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, 630 1, pcmcia_align, &data); 631 up(&rsrc_sem); 632 633 if (ret != 0) { 634 kfree(res); 635 res = NULL; 636 } 637 return res; 638 } 639 640 static struct resource * nonstatic_find_mem_region(u_long base, u_long num, 641 u_long align, int low, struct pcmcia_socket *s) 642 { 643 struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.class_id); 644 struct socket_data *s_data = s->resource_data; 645 struct pcmcia_align_data data; 646 unsigned long min, max; 647 int ret, i; 648 649 low = low || !(s->features & SS_CAP_PAGE_REGS); 650 651 data.mask = align - 1; 652 data.offset = base & data.mask; 653 data.map = &s_data->mem_db; 654 655 for (i = 0; i < 2; i++) { 656 if (low) { 657 max = 0x100000UL; 658 min = base < max ? base : 0; 659 } else { 660 max = ~0UL; 661 min = 0x100000UL + base; 662 } 663 664 down(&rsrc_sem); 665 #ifdef CONFIG_PCI 666 if (s->cb_dev) { 667 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 668 1, min, 0, 669 pcmcia_align, &data); 670 } else 671 #endif 672 ret = allocate_resource(&iomem_resource, res, num, min, 673 max, 1, pcmcia_align, &data); 674 up(&rsrc_sem); 675 if (ret == 0 || low) 676 break; 677 low = 1; 678 } 679 680 if (ret != 0) { 681 kfree(res); 682 res = NULL; 683 } 684 return res; 685 } 686 687 688 static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) 689 { 690 struct socket_data *data = s->resource_data; 691 unsigned long size = end - start + 1; 692 int ret = 0; 693 694 if (end <= start) 695 return -EINVAL; 696 697 down(&rsrc_sem); 698 switch (action) { 699 case ADD_MANAGED_RESOURCE: 700 ret = add_interval(&data->mem_db, start, size); 701 break; 702 case REMOVE_MANAGED_RESOURCE: 703 ret = sub_interval(&data->mem_db, start, size); 704 if (!ret) { 705 struct pcmcia_socket *socket; 706 down_read(&pcmcia_socket_list_rwsem); 707 list_for_each_entry(socket, &pcmcia_socket_list, socket_list) 708 release_cis_mem(socket); 709 up_read(&pcmcia_socket_list_rwsem); 710 } 711 break; 712 default: 713 ret = -EINVAL; 714 } 715 up(&rsrc_sem); 716 717 return ret; 718 } 719 720 721 static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) 722 { 723 struct socket_data *data = s->resource_data; 724 unsigned long size = end - start + 1; 725 int ret = 0; 726 727 if (end <= start) 728 return -EINVAL; 729 730 if (end > IO_SPACE_LIMIT) 731 return -EINVAL; 732 733 down(&rsrc_sem); 734 switch (action) { 735 case ADD_MANAGED_RESOURCE: 736 if (add_interval(&data->io_db, start, size) != 0) { 737 ret = -EBUSY; 738 break; 739 } 740 #ifdef CONFIG_PCMCIA_PROBE 741 if (probe_io) 742 do_io_probe(s, start, size); 743 #endif 744 break; 745 case REMOVE_MANAGED_RESOURCE: 746 sub_interval(&data->io_db, start, size); 747 break; 748 default: 749 ret = -EINVAL; 750 break; 751 } 752 up(&rsrc_sem); 753 754 return ret; 755 } 756 757 758 static int nonstatic_adjust_resource_info(struct pcmcia_socket *s, adjust_t *adj) 759 { 760 unsigned long end; 761 762 switch (adj->Resource) { 763 case RES_MEMORY_RANGE: 764 end = adj->resource.memory.Base + adj->resource.memory.Size - 1; 765 return adjust_memory(s, adj->Action, adj->resource.memory.Base, end); 766 case RES_IO_RANGE: 767 end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; 768 return adjust_io(s, adj->Action, adj->resource.io.BasePort, end); 769 } 770 return CS_UNSUPPORTED_FUNCTION; 771 } 772 773 #ifdef CONFIG_PCI 774 static int nonstatic_autoadd_resources(struct pcmcia_socket *s) 775 { 776 struct resource *res; 777 int i, done = 0; 778 779 if (!s->cb_dev || !s->cb_dev->bus) 780 return -ENODEV; 781 782 #if defined(CONFIG_X86) || defined(CONFIG_X86_64) 783 /* If this is the root bus, the risk of hitting 784 * some strange system devices which aren't protected 785 * by either ACPI resource tables or properly requested 786 * resources is too big. Therefore, don't do auto-adding 787 * of resources at the moment. 788 */ 789 if (s->cb_dev->bus->number == 0) 790 return -EINVAL; 791 #endif 792 793 for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) { 794 res = s->cb_dev->bus->resource[i]; 795 if (!res) 796 continue; 797 798 if (res->flags & IORESOURCE_IO) { 799 if (res == &ioport_resource) 800 continue; 801 printk(KERN_INFO "pcmcia: parent PCI bridge I/O window: 0x%lx - 0x%lx\n", 802 res->start, res->end); 803 if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) 804 done |= IORESOURCE_IO; 805 806 } 807 808 if (res->flags & IORESOURCE_MEM) { 809 if (res == &iomem_resource) 810 continue; 811 printk(KERN_INFO "pcmcia: parent PCI bridge Memory window: 0x%lx - 0x%lx\n", 812 res->start, res->end); 813 if (!adjust_memory(s, ADD_MANAGED_RESOURCE, res->start, res->end)) 814 done |= IORESOURCE_MEM; 815 } 816 } 817 818 /* if we got at least one of IO, and one of MEM, we can be glad and 819 * activate the PCMCIA subsystem */ 820 if (done & (IORESOURCE_MEM | IORESOURCE_IO)) 821 s->resource_setup_done = 1; 822 823 return 0; 824 } 825 826 #else 827 828 static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s) 829 { 830 return -ENODEV; 831 } 832 833 #endif 834 835 836 static int nonstatic_init(struct pcmcia_socket *s) 837 { 838 struct socket_data *data; 839 840 data = kmalloc(sizeof(struct socket_data), GFP_KERNEL); 841 if (!data) 842 return -ENOMEM; 843 memset(data, 0, sizeof(struct socket_data)); 844 845 data->mem_db.next = &data->mem_db; 846 data->io_db.next = &data->io_db; 847 848 s->resource_data = (void *) data; 849 850 nonstatic_autoadd_resources(s); 851 852 return 0; 853 } 854 855 static void nonstatic_release_resource_db(struct pcmcia_socket *s) 856 { 857 struct socket_data *data = s->resource_data; 858 struct resource_map *p, *q; 859 860 down(&rsrc_sem); 861 for (p = data->mem_db.next; p != &data->mem_db; p = q) { 862 q = p->next; 863 kfree(p); 864 } 865 for (p = data->io_db.next; p != &data->io_db; p = q) { 866 q = p->next; 867 kfree(p); 868 } 869 up(&rsrc_sem); 870 } 871 872 873 struct pccard_resource_ops pccard_nonstatic_ops = { 874 .validate_mem = pcmcia_nonstatic_validate_mem, 875 .adjust_io_region = nonstatic_adjust_io_region, 876 .find_io = nonstatic_find_io_region, 877 .find_mem = nonstatic_find_mem_region, 878 .adjust_resource = nonstatic_adjust_resource_info, 879 .init = nonstatic_init, 880 .exit = nonstatic_release_resource_db, 881 }; 882 EXPORT_SYMBOL(pccard_nonstatic_ops); 883 884 885 /* sysfs interface to the resource database */ 886 887 static ssize_t show_io_db(struct class_device *class_dev, char *buf) 888 { 889 struct pcmcia_socket *s = class_get_devdata(class_dev); 890 struct socket_data *data; 891 struct resource_map *p; 892 ssize_t ret = 0; 893 894 down(&rsrc_sem); 895 data = s->resource_data; 896 897 for (p = data->io_db.next; p != &data->io_db; p = p->next) { 898 if (ret > (PAGE_SIZE - 10)) 899 continue; 900 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), 901 "0x%08lx - 0x%08lx\n", 902 ((unsigned long) p->base), 903 ((unsigned long) p->base + p->num - 1)); 904 } 905 906 up(&rsrc_sem); 907 return (ret); 908 } 909 910 static ssize_t store_io_db(struct class_device *class_dev, const char *buf, size_t count) 911 { 912 struct pcmcia_socket *s = class_get_devdata(class_dev); 913 unsigned long start_addr, end_addr; 914 unsigned int add = ADD_MANAGED_RESOURCE; 915 ssize_t ret = 0; 916 917 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); 918 if (ret != 2) { 919 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); 920 add = REMOVE_MANAGED_RESOURCE; 921 if (ret != 2) { 922 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); 923 add = ADD_MANAGED_RESOURCE; 924 if (ret != 2) 925 return -EINVAL; 926 } 927 } 928 if (end_addr <= start_addr) 929 return -EINVAL; 930 931 ret = adjust_io(s, add, start_addr, end_addr); 932 if (!ret) 933 s->resource_setup_new = 1; 934 935 return ret ? ret : count; 936 } 937 static CLASS_DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); 938 939 static ssize_t show_mem_db(struct class_device *class_dev, char *buf) 940 { 941 struct pcmcia_socket *s = class_get_devdata(class_dev); 942 struct socket_data *data; 943 struct resource_map *p; 944 ssize_t ret = 0; 945 946 down(&rsrc_sem); 947 data = s->resource_data; 948 949 for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { 950 if (ret > (PAGE_SIZE - 10)) 951 continue; 952 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), 953 "0x%08lx - 0x%08lx\n", 954 ((unsigned long) p->base), 955 ((unsigned long) p->base + p->num - 1)); 956 } 957 958 up(&rsrc_sem); 959 return (ret); 960 } 961 962 static ssize_t store_mem_db(struct class_device *class_dev, const char *buf, size_t count) 963 { 964 struct pcmcia_socket *s = class_get_devdata(class_dev); 965 unsigned long start_addr, end_addr; 966 unsigned int add = ADD_MANAGED_RESOURCE; 967 ssize_t ret = 0; 968 969 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); 970 if (ret != 2) { 971 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); 972 add = REMOVE_MANAGED_RESOURCE; 973 if (ret != 2) { 974 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); 975 add = ADD_MANAGED_RESOURCE; 976 if (ret != 2) 977 return -EINVAL; 978 } 979 } 980 if (end_addr <= start_addr) 981 return -EINVAL; 982 983 ret = adjust_memory(s, add, start_addr, end_addr); 984 if (!ret) 985 s->resource_setup_new = 1; 986 987 return ret ? ret : count; 988 } 989 static CLASS_DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); 990 991 static struct class_device_attribute *pccard_rsrc_attributes[] = { 992 &class_device_attr_available_resources_io, 993 &class_device_attr_available_resources_mem, 994 NULL, 995 }; 996 997 static int __devinit pccard_sysfs_add_rsrc(struct class_device *class_dev) 998 { 999 struct pcmcia_socket *s = class_get_devdata(class_dev); 1000 struct class_device_attribute **attr; 1001 int ret = 0; 1002 if (s->resource_ops != &pccard_nonstatic_ops) 1003 return 0; 1004 1005 for (attr = pccard_rsrc_attributes; *attr; attr++) { 1006 ret = class_device_create_file(class_dev, *attr); 1007 if (ret) 1008 break; 1009 } 1010 1011 return ret; 1012 } 1013 1014 static void __devexit pccard_sysfs_remove_rsrc(struct class_device *class_dev) 1015 { 1016 struct pcmcia_socket *s = class_get_devdata(class_dev); 1017 struct class_device_attribute **attr; 1018 1019 if (s->resource_ops != &pccard_nonstatic_ops) 1020 return; 1021 1022 for (attr = pccard_rsrc_attributes; *attr; attr++) 1023 class_device_remove_file(class_dev, *attr); 1024 } 1025 1026 static struct class_interface pccard_rsrc_interface = { 1027 .class = &pcmcia_socket_class, 1028 .add = &pccard_sysfs_add_rsrc, 1029 .remove = __devexit_p(&pccard_sysfs_remove_rsrc), 1030 }; 1031 1032 static int __init nonstatic_sysfs_init(void) 1033 { 1034 return class_interface_register(&pccard_rsrc_interface); 1035 } 1036 1037 static void __exit nonstatic_sysfs_exit(void) 1038 { 1039 class_interface_unregister(&pccard_rsrc_interface); 1040 } 1041 1042 module_init(nonstatic_sysfs_init); 1043 module_exit(nonstatic_sysfs_exit); 1044