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/module.h> 16 #include <linux/moduleparam.h> 17 #include <linux/init.h> 18 #include <linux/interrupt.h> 19 #include <linux/kernel.h> 20 #include <linux/errno.h> 21 #include <linux/types.h> 22 #include <linux/slab.h> 23 #include <linux/ioport.h> 24 #include <linux/timer.h> 25 #include <linux/pci.h> 26 #include <linux/device.h> 27 28 #include <asm/irq.h> 29 #include <asm/io.h> 30 31 #include <pcmcia/cs_types.h> 32 #include <pcmcia/ss.h> 33 #include <pcmcia/cs.h> 34 #include <pcmcia/cistpl.h> 35 #include "cs_internal.h" 36 37 MODULE_AUTHOR("David A. Hinds, Dominik Brodowski"); 38 MODULE_LICENSE("GPL"); 39 40 /* Parameters that can be set with 'insmod' */ 41 42 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) 43 44 INT_MODULE_PARM(probe_mem, 1); /* memory probe? */ 45 #ifdef CONFIG_PCMCIA_PROBE 46 INT_MODULE_PARM(probe_io, 1); /* IO port probe? */ 47 INT_MODULE_PARM(mem_limit, 0x10000); 48 #endif 49 50 /* for io_db and mem_db */ 51 struct resource_map { 52 u_long base, num; 53 struct resource_map *next; 54 }; 55 56 struct socket_data { 57 struct resource_map mem_db; 58 struct resource_map io_db; 59 unsigned int rsrc_mem_probe; 60 }; 61 62 static DEFINE_MUTEX(rsrc_mutex); 63 #define MEM_PROBE_LOW (1 << 0) 64 #define MEM_PROBE_HIGH (1 << 1) 65 66 67 /*====================================================================== 68 69 Linux resource management extensions 70 71 ======================================================================*/ 72 73 static struct resource * 74 make_resource(resource_size_t b, resource_size_t n, int flags, char *name) 75 { 76 struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL); 77 78 if (res) { 79 res->name = name; 80 res->start = b; 81 res->end = b + n - 1; 82 res->flags = flags; 83 } 84 return res; 85 } 86 87 static struct resource * 88 claim_region(struct pcmcia_socket *s, resource_size_t base, 89 resource_size_t size, int type, char *name) 90 { 91 struct resource *res, *parent; 92 93 parent = type & IORESOURCE_MEM ? &iomem_resource : &ioport_resource; 94 res = make_resource(base, size, type | IORESOURCE_BUSY, name); 95 96 if (res) { 97 #ifdef CONFIG_PCI 98 if (s && s->cb_dev) 99 parent = pci_find_parent_resource(s->cb_dev, res); 100 #endif 101 if (!parent || request_resource(parent, res)) { 102 kfree(res); 103 res = NULL; 104 } 105 } 106 return res; 107 } 108 109 static void free_region(struct resource *res) 110 { 111 if (res) { 112 release_resource(res); 113 kfree(res); 114 } 115 } 116 117 /*====================================================================== 118 119 These manage the internal databases of available resources. 120 121 ======================================================================*/ 122 123 static int add_interval(struct resource_map *map, u_long base, u_long num) 124 { 125 struct resource_map *p, *q; 126 127 for (p = map; ; p = p->next) { 128 if ((p != map) && (p->base+p->num-1 >= base)) 129 return -1; 130 if ((p->next == map) || (p->next->base > base+num-1)) 131 break; 132 } 133 q = kmalloc(sizeof(struct resource_map), GFP_KERNEL); 134 if (!q) return CS_OUT_OF_RESOURCE; 135 q->base = base; q->num = num; 136 q->next = p->next; p->next = q; 137 return CS_SUCCESS; 138 } 139 140 /*====================================================================*/ 141 142 static int sub_interval(struct resource_map *map, u_long base, u_long num) 143 { 144 struct resource_map *p, *q; 145 146 for (p = map; ; p = q) { 147 q = p->next; 148 if (q == map) 149 break; 150 if ((q->base+q->num > base) && (base+num > q->base)) { 151 if (q->base >= base) { 152 if (q->base+q->num <= base+num) { 153 /* Delete whole block */ 154 p->next = q->next; 155 kfree(q); 156 /* don't advance the pointer yet */ 157 q = p; 158 } else { 159 /* Cut off bit from the front */ 160 q->num = q->base + q->num - base - num; 161 q->base = base + num; 162 } 163 } else if (q->base+q->num <= base+num) { 164 /* Cut off bit from the end */ 165 q->num = base - q->base; 166 } else { 167 /* Split the block into two pieces */ 168 p = kmalloc(sizeof(struct resource_map), GFP_KERNEL); 169 if (!p) return CS_OUT_OF_RESOURCE; 170 p->base = base+num; 171 p->num = q->base+q->num - p->base; 172 q->num = base - q->base; 173 p->next = q->next ; q->next = p; 174 } 175 } 176 } 177 return CS_SUCCESS; 178 } 179 180 /*====================================================================== 181 182 These routines examine a region of IO or memory addresses to 183 determine what ranges might be genuinely available. 184 185 ======================================================================*/ 186 187 #ifdef CONFIG_PCMCIA_PROBE 188 static void do_io_probe(struct pcmcia_socket *s, unsigned int base, 189 unsigned int num) 190 { 191 struct resource *res; 192 struct socket_data *s_data = s->resource_data; 193 unsigned int i, j, bad; 194 int any; 195 u_char *b, hole, most; 196 197 printk(KERN_INFO "cs: IO port probe %#x-%#x:", 198 base, base+num-1); 199 200 /* First, what does a floating port look like? */ 201 b = kzalloc(256, GFP_KERNEL); 202 if (!b) { 203 printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes"); 204 return; 205 } 206 for (i = base, most = 0; i < base+num; i += 8) { 207 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); 208 if (!res) 209 continue; 210 hole = inb(i); 211 for (j = 1; j < 8; j++) 212 if (inb(i+j) != hole) break; 213 free_region(res); 214 if ((j == 8) && (++b[hole] > b[most])) 215 most = hole; 216 if (b[most] == 127) break; 217 } 218 kfree(b); 219 220 bad = any = 0; 221 for (i = base; i < base+num; i += 8) { 222 res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe"); 223 if (!res) 224 continue; 225 for (j = 0; j < 8; j++) 226 if (inb(i+j) != most) break; 227 free_region(res); 228 if (j < 8) { 229 if (!any) 230 printk(" excluding"); 231 if (!bad) 232 bad = any = i; 233 } else { 234 if (bad) { 235 sub_interval(&s_data->io_db, bad, i-bad); 236 printk(" %#x-%#x", bad, i-1); 237 bad = 0; 238 } 239 } 240 } 241 if (bad) { 242 if ((num > 16) && (bad == base) && (i == base+num)) { 243 printk(" nothing: probe failed.\n"); 244 return; 245 } else { 246 sub_interval(&s_data->io_db, bad, i-bad); 247 printk(" %#x-%#x", bad, i-1); 248 } 249 } 250 251 printk(any ? "\n" : " clean.\n"); 252 } 253 #endif 254 255 /*====================================================================== 256 257 This is tricky... when we set up CIS memory, we try to validate 258 the memory window space allocations. 259 260 ======================================================================*/ 261 262 /* Validation function for cards with a valid CIS */ 263 static int readable(struct pcmcia_socket *s, struct resource *res, 264 unsigned int *count) 265 { 266 int ret = -1; 267 268 s->cis_mem.res = res; 269 s->cis_virt = ioremap(res->start, s->map_size); 270 if (s->cis_virt) { 271 ret = pccard_validate_cis(s, BIND_FN_ALL, count); 272 /* invalidate mapping and CIS cache */ 273 iounmap(s->cis_virt); 274 s->cis_virt = NULL; 275 destroy_cis_cache(s); 276 } 277 s->cis_mem.res = NULL; 278 if ((ret != 0) || (*count == 0)) 279 return 0; 280 return 1; 281 } 282 283 /* Validation function for simple memory cards */ 284 static int checksum(struct pcmcia_socket *s, struct resource *res) 285 { 286 pccard_mem_map map; 287 int i, a = 0, b = -1, d; 288 void __iomem *virt; 289 290 virt = ioremap(res->start, s->map_size); 291 if (virt) { 292 map.map = 0; 293 map.flags = MAP_ACTIVE; 294 map.speed = 0; 295 map.res = res; 296 map.card_start = 0; 297 s->ops->set_mem_map(s, &map); 298 299 /* Don't bother checking every word... */ 300 for (i = 0; i < s->map_size; i += 44) { 301 d = readl(virt+i); 302 a += d; 303 b &= d; 304 } 305 306 map.flags = 0; 307 s->ops->set_mem_map(s, &map); 308 309 iounmap(virt); 310 } 311 312 return (b == -1) ? -1 : (a>>1); 313 } 314 315 static int 316 cis_readable(struct pcmcia_socket *s, unsigned long base, unsigned long size) 317 { 318 struct resource *res1, *res2; 319 unsigned int info1, info2; 320 int ret = 0; 321 322 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); 323 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); 324 325 if (res1 && res2) { 326 ret = readable(s, res1, &info1); 327 ret += readable(s, res2, &info2); 328 } 329 330 free_region(res2); 331 free_region(res1); 332 333 return (ret == 2) && (info1 == info2); 334 } 335 336 static int 337 checksum_match(struct pcmcia_socket *s, unsigned long base, unsigned long size) 338 { 339 struct resource *res1, *res2; 340 int a = -1, b = -1; 341 342 res1 = claim_region(s, base, size/2, IORESOURCE_MEM, "cs memory probe"); 343 res2 = claim_region(s, base + size/2, size/2, IORESOURCE_MEM, "cs memory probe"); 344 345 if (res1 && res2) { 346 a = checksum(s, res1); 347 b = checksum(s, res2); 348 } 349 350 free_region(res2); 351 free_region(res1); 352 353 return (a == b) && (a >= 0); 354 } 355 356 /*====================================================================== 357 358 The memory probe. If the memory list includes a 64K-aligned block 359 below 1MB, we probe in 64K chunks, and as soon as we accumulate at 360 least mem_limit free space, we quit. 361 362 ======================================================================*/ 363 364 static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s) 365 { 366 struct socket_data *s_data = s->resource_data; 367 u_long i, j, bad, fail, step; 368 369 printk(KERN_INFO "cs: memory probe 0x%06lx-0x%06lx:", 370 base, base+num-1); 371 bad = fail = 0; 372 step = (num < 0x20000) ? 0x2000 : ((num>>4) & ~0x1fff); 373 /* don't allow too large steps */ 374 if (step > 0x800000) 375 step = 0x800000; 376 /* cis_readable wants to map 2x map_size */ 377 if (step < 2 * s->map_size) 378 step = 2 * s->map_size; 379 for (i = j = base; i < base+num; i = j + step) { 380 if (!fail) { 381 for (j = i; j < base+num; j += step) { 382 if (cis_readable(s, j, step)) 383 break; 384 } 385 fail = ((i == base) && (j == base+num)); 386 } 387 if (fail) { 388 for (j = i; j < base+num; j += 2*step) 389 if (checksum_match(s, j, step) && 390 checksum_match(s, j + step, step)) 391 break; 392 } 393 if (i != j) { 394 if (!bad) printk(" excluding"); 395 printk(" %#05lx-%#05lx", i, j-1); 396 sub_interval(&s_data->mem_db, i, j-i); 397 bad += j-i; 398 } 399 } 400 printk(bad ? "\n" : " clean.\n"); 401 return (num - bad); 402 } 403 404 #ifdef CONFIG_PCMCIA_PROBE 405 406 static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s) 407 { 408 struct socket_data *s_data = s->resource_data; 409 u_long ok; 410 if (m == &s_data->mem_db) 411 return 0; 412 ok = inv_probe(m->next, s); 413 if (ok) { 414 if (m->base >= 0x100000) 415 sub_interval(&s_data->mem_db, m->base, m->num); 416 return ok; 417 } 418 if (m->base < 0x100000) 419 return 0; 420 return do_mem_probe(m->base, m->num, s); 421 } 422 423 static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) 424 { 425 struct resource_map *m, mm; 426 static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 }; 427 unsigned long b, i, ok = 0; 428 struct socket_data *s_data = s->resource_data; 429 430 /* We do up to four passes through the list */ 431 if (probe_mask & MEM_PROBE_HIGH) { 432 if (inv_probe(s_data->mem_db.next, s) > 0) 433 return 0; 434 printk(KERN_NOTICE "cs: warning: no high memory space " 435 "available!\n"); 436 return -ENODEV; 437 } 438 439 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { 440 mm = *m; 441 /* Only probe < 1 MB */ 442 if (mm.base >= 0x100000) 443 continue; 444 if ((mm.base | mm.num) & 0xffff) { 445 ok += do_mem_probe(mm.base, mm.num, s); 446 continue; 447 } 448 /* Special probe for 64K-aligned block */ 449 for (i = 0; i < 4; i++) { 450 b = order[i] << 12; 451 if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) { 452 if (ok >= mem_limit) 453 sub_interval(&s_data->mem_db, b, 0x10000); 454 else 455 ok += do_mem_probe(b, 0x10000, s); 456 } 457 } 458 } 459 460 if (ok > 0) 461 return 0; 462 463 return -ENODEV; 464 } 465 466 #else /* CONFIG_PCMCIA_PROBE */ 467 468 static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask) 469 { 470 struct resource_map *m, mm; 471 struct socket_data *s_data = s->resource_data; 472 unsigned long ok = 0; 473 474 for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) { 475 mm = *m; 476 ok += do_mem_probe(mm.base, mm.num, s); 477 } 478 if (ok > 0) 479 return 0; 480 return -ENODEV; 481 } 482 483 #endif /* CONFIG_PCMCIA_PROBE */ 484 485 486 /* 487 * Locking note: Must be called with skt_mutex held! 488 */ 489 static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s) 490 { 491 struct socket_data *s_data = s->resource_data; 492 unsigned int probe_mask = MEM_PROBE_LOW; 493 int ret = 0; 494 495 if (!probe_mem) 496 return 0; 497 498 mutex_lock(&rsrc_mutex); 499 500 if (s->features & SS_CAP_PAGE_REGS) 501 probe_mask = MEM_PROBE_HIGH; 502 503 if (probe_mask & ~s_data->rsrc_mem_probe) { 504 if (s->state & SOCKET_PRESENT) 505 ret = validate_mem(s, probe_mask); 506 if (!ret) 507 s_data->rsrc_mem_probe |= probe_mask; 508 } 509 510 mutex_unlock(&rsrc_mutex); 511 512 return ret; 513 } 514 515 struct pcmcia_align_data { 516 unsigned long mask; 517 unsigned long offset; 518 struct resource_map *map; 519 }; 520 521 static void 522 pcmcia_common_align(void *align_data, struct resource *res, 523 resource_size_t size, resource_size_t align) 524 { 525 struct pcmcia_align_data *data = align_data; 526 resource_size_t start; 527 /* 528 * Ensure that we have the correct start address 529 */ 530 start = (res->start & ~data->mask) + data->offset; 531 if (start < res->start) 532 start += data->mask + 1; 533 res->start = start; 534 } 535 536 static void 537 pcmcia_align(void *align_data, struct resource *res, resource_size_t size, 538 resource_size_t align) 539 { 540 struct pcmcia_align_data *data = align_data; 541 struct resource_map *m; 542 543 pcmcia_common_align(data, res, size, align); 544 545 for (m = data->map->next; m != data->map; m = m->next) { 546 unsigned long start = m->base; 547 unsigned long end = m->base + m->num - 1; 548 549 /* 550 * If the lower resources are not available, try aligning 551 * to this entry of the resource database to see if it'll 552 * fit here. 553 */ 554 if (res->start < start) { 555 res->start = start; 556 pcmcia_common_align(data, res, size, align); 557 } 558 559 /* 560 * If we're above the area which was passed in, there's 561 * no point proceeding. 562 */ 563 if (res->start >= res->end) 564 break; 565 566 if ((res->start + size - 1) <= end) 567 break; 568 } 569 570 /* 571 * If we failed to find something suitable, ensure we fail. 572 */ 573 if (m == data->map) 574 res->start = res->end; 575 } 576 577 /* 578 * Adjust an existing IO region allocation, but making sure that we don't 579 * encroach outside the resources which the user supplied. 580 */ 581 static int nonstatic_adjust_io_region(struct resource *res, unsigned long r_start, 582 unsigned long r_end, struct pcmcia_socket *s) 583 { 584 struct resource_map *m; 585 struct socket_data *s_data = s->resource_data; 586 int ret = -ENOMEM; 587 588 mutex_lock(&rsrc_mutex); 589 for (m = s_data->io_db.next; m != &s_data->io_db; m = m->next) { 590 unsigned long start = m->base; 591 unsigned long end = m->base + m->num - 1; 592 593 if (start > r_start || r_end > end) 594 continue; 595 596 ret = adjust_resource(res, r_start, r_end - r_start + 1); 597 break; 598 } 599 mutex_unlock(&rsrc_mutex); 600 601 return ret; 602 } 603 604 /*====================================================================== 605 606 These find ranges of I/O ports or memory addresses that are not 607 currently allocated by other devices. 608 609 The 'align' field should reflect the number of bits of address 610 that need to be preserved from the initial value of *base. It 611 should be a power of two, greater than or equal to 'num'. A value 612 of 0 means that all bits of *base are significant. *base should 613 also be strictly less than 'align'. 614 615 ======================================================================*/ 616 617 static struct resource *nonstatic_find_io_region(unsigned long base, int num, 618 unsigned long align, struct pcmcia_socket *s) 619 { 620 struct resource *res = make_resource(0, num, IORESOURCE_IO, s->dev.bus_id); 621 struct socket_data *s_data = s->resource_data; 622 struct pcmcia_align_data data; 623 unsigned long min = base; 624 int ret; 625 626 if (align == 0) 627 align = 0x10000; 628 629 data.mask = align - 1; 630 data.offset = base & data.mask; 631 data.map = &s_data->io_db; 632 633 mutex_lock(&rsrc_mutex); 634 #ifdef CONFIG_PCI 635 if (s->cb_dev) { 636 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, 637 min, 0, pcmcia_align, &data); 638 } else 639 #endif 640 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, 641 1, pcmcia_align, &data); 642 mutex_unlock(&rsrc_mutex); 643 644 if (ret != 0) { 645 kfree(res); 646 res = NULL; 647 } 648 return res; 649 } 650 651 static struct resource * nonstatic_find_mem_region(u_long base, u_long num, 652 u_long align, int low, struct pcmcia_socket *s) 653 { 654 struct resource *res = make_resource(0, num, IORESOURCE_MEM, s->dev.bus_id); 655 struct socket_data *s_data = s->resource_data; 656 struct pcmcia_align_data data; 657 unsigned long min, max; 658 int ret, i; 659 660 low = low || !(s->features & SS_CAP_PAGE_REGS); 661 662 data.mask = align - 1; 663 data.offset = base & data.mask; 664 data.map = &s_data->mem_db; 665 666 for (i = 0; i < 2; i++) { 667 if (low) { 668 max = 0x100000UL; 669 min = base < max ? base : 0; 670 } else { 671 max = ~0UL; 672 min = 0x100000UL + base; 673 } 674 675 mutex_lock(&rsrc_mutex); 676 #ifdef CONFIG_PCI 677 if (s->cb_dev) { 678 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 679 1, min, 0, 680 pcmcia_align, &data); 681 } else 682 #endif 683 ret = allocate_resource(&iomem_resource, res, num, min, 684 max, 1, pcmcia_align, &data); 685 mutex_unlock(&rsrc_mutex); 686 if (ret == 0 || low) 687 break; 688 low = 1; 689 } 690 691 if (ret != 0) { 692 kfree(res); 693 res = NULL; 694 } 695 return res; 696 } 697 698 699 static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) 700 { 701 struct socket_data *data = s->resource_data; 702 unsigned long size = end - start + 1; 703 int ret = 0; 704 705 if (end < start) 706 return -EINVAL; 707 708 mutex_lock(&rsrc_mutex); 709 switch (action) { 710 case ADD_MANAGED_RESOURCE: 711 ret = add_interval(&data->mem_db, start, size); 712 break; 713 case REMOVE_MANAGED_RESOURCE: 714 ret = sub_interval(&data->mem_db, start, size); 715 if (!ret) { 716 struct pcmcia_socket *socket; 717 down_read(&pcmcia_socket_list_rwsem); 718 list_for_each_entry(socket, &pcmcia_socket_list, socket_list) 719 release_cis_mem(socket); 720 up_read(&pcmcia_socket_list_rwsem); 721 } 722 break; 723 default: 724 ret = -EINVAL; 725 } 726 mutex_unlock(&rsrc_mutex); 727 728 return ret; 729 } 730 731 732 static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) 733 { 734 struct socket_data *data = s->resource_data; 735 unsigned long size = end - start + 1; 736 int ret = 0; 737 738 if (end < start) 739 return -EINVAL; 740 741 if (end > IO_SPACE_LIMIT) 742 return -EINVAL; 743 744 mutex_lock(&rsrc_mutex); 745 switch (action) { 746 case ADD_MANAGED_RESOURCE: 747 if (add_interval(&data->io_db, start, size) != 0) { 748 ret = -EBUSY; 749 break; 750 } 751 #ifdef CONFIG_PCMCIA_PROBE 752 if (probe_io) 753 do_io_probe(s, start, size); 754 #endif 755 break; 756 case REMOVE_MANAGED_RESOURCE: 757 sub_interval(&data->io_db, start, size); 758 break; 759 default: 760 ret = -EINVAL; 761 break; 762 } 763 mutex_unlock(&rsrc_mutex); 764 765 return ret; 766 } 767 768 769 #ifdef CONFIG_PCI 770 static int nonstatic_autoadd_resources(struct pcmcia_socket *s) 771 { 772 struct resource *res; 773 int i, done = 0; 774 775 if (!s->cb_dev || !s->cb_dev->bus) 776 return -ENODEV; 777 778 #if defined(CONFIG_X86) 779 /* If this is the root bus, the risk of hitting 780 * some strange system devices which aren't protected 781 * by either ACPI resource tables or properly requested 782 * resources is too big. Therefore, don't do auto-adding 783 * of resources at the moment. 784 */ 785 if (s->cb_dev->bus->number == 0) 786 return -EINVAL; 787 #endif 788 789 for (i=0; i < PCI_BUS_NUM_RESOURCES; i++) { 790 res = s->cb_dev->bus->resource[i]; 791 if (!res) 792 continue; 793 794 if (res->flags & IORESOURCE_IO) { 795 if (res == &ioport_resource) 796 continue; 797 printk(KERN_INFO "pcmcia: parent PCI bridge I/O " 798 "window: 0x%llx - 0x%llx\n", 799 (unsigned long long)res->start, 800 (unsigned long long)res->end); 801 if (!adjust_io(s, ADD_MANAGED_RESOURCE, res->start, res->end)) 802 done |= IORESOURCE_IO; 803 804 } 805 806 if (res->flags & IORESOURCE_MEM) { 807 if (res == &iomem_resource) 808 continue; 809 printk(KERN_INFO "pcmcia: parent PCI bridge Memory " 810 "window: 0x%llx - 0x%llx\n", 811 (unsigned long long)res->start, 812 (unsigned long long)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 = kzalloc(sizeof(struct socket_data), GFP_KERNEL); 841 if (!data) 842 return -ENOMEM; 843 844 data->mem_db.next = &data->mem_db; 845 data->io_db.next = &data->io_db; 846 847 s->resource_data = (void *) data; 848 849 nonstatic_autoadd_resources(s); 850 851 return 0; 852 } 853 854 static void nonstatic_release_resource_db(struct pcmcia_socket *s) 855 { 856 struct socket_data *data = s->resource_data; 857 struct resource_map *p, *q; 858 859 mutex_lock(&rsrc_mutex); 860 for (p = data->mem_db.next; p != &data->mem_db; p = q) { 861 q = p->next; 862 kfree(p); 863 } 864 for (p = data->io_db.next; p != &data->io_db; p = q) { 865 q = p->next; 866 kfree(p); 867 } 868 mutex_unlock(&rsrc_mutex); 869 } 870 871 872 struct pccard_resource_ops pccard_nonstatic_ops = { 873 .validate_mem = pcmcia_nonstatic_validate_mem, 874 .adjust_io_region = nonstatic_adjust_io_region, 875 .find_io = nonstatic_find_io_region, 876 .find_mem = nonstatic_find_mem_region, 877 .add_io = adjust_io, 878 .add_mem = adjust_memory, 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 device *dev, 888 struct device_attribute *attr, char *buf) 889 { 890 struct pcmcia_socket *s = dev_get_drvdata(dev); 891 struct socket_data *data; 892 struct resource_map *p; 893 ssize_t ret = 0; 894 895 mutex_lock(&rsrc_mutex); 896 data = s->resource_data; 897 898 for (p = data->io_db.next; p != &data->io_db; p = p->next) { 899 if (ret > (PAGE_SIZE - 10)) 900 continue; 901 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), 902 "0x%08lx - 0x%08lx\n", 903 ((unsigned long) p->base), 904 ((unsigned long) p->base + p->num - 1)); 905 } 906 907 mutex_unlock(&rsrc_mutex); 908 return (ret); 909 } 910 911 static ssize_t store_io_db(struct device *dev, 912 struct device_attribute *attr, 913 const char *buf, size_t count) 914 { 915 struct pcmcia_socket *s = dev_get_drvdata(dev); 916 unsigned long start_addr, end_addr; 917 unsigned int add = ADD_MANAGED_RESOURCE; 918 ssize_t ret = 0; 919 920 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); 921 if (ret != 2) { 922 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); 923 add = REMOVE_MANAGED_RESOURCE; 924 if (ret != 2) { 925 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); 926 add = ADD_MANAGED_RESOURCE; 927 if (ret != 2) 928 return -EINVAL; 929 } 930 } 931 if (end_addr < start_addr) 932 return -EINVAL; 933 934 ret = adjust_io(s, add, start_addr, end_addr); 935 if (!ret) 936 s->resource_setup_new = 1; 937 938 return ret ? ret : count; 939 } 940 static DEVICE_ATTR(available_resources_io, 0600, show_io_db, store_io_db); 941 942 static ssize_t show_mem_db(struct device *dev, 943 struct device_attribute *attr, char *buf) 944 { 945 struct pcmcia_socket *s = dev_get_drvdata(dev); 946 struct socket_data *data; 947 struct resource_map *p; 948 ssize_t ret = 0; 949 950 mutex_lock(&rsrc_mutex); 951 data = s->resource_data; 952 953 for (p = data->mem_db.next; p != &data->mem_db; p = p->next) { 954 if (ret > (PAGE_SIZE - 10)) 955 continue; 956 ret += snprintf (&buf[ret], (PAGE_SIZE - ret - 1), 957 "0x%08lx - 0x%08lx\n", 958 ((unsigned long) p->base), 959 ((unsigned long) p->base + p->num - 1)); 960 } 961 962 mutex_unlock(&rsrc_mutex); 963 return (ret); 964 } 965 966 static ssize_t store_mem_db(struct device *dev, 967 struct device_attribute *attr, 968 const char *buf, size_t count) 969 { 970 struct pcmcia_socket *s = dev_get_drvdata(dev); 971 unsigned long start_addr, end_addr; 972 unsigned int add = ADD_MANAGED_RESOURCE; 973 ssize_t ret = 0; 974 975 ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); 976 if (ret != 2) { 977 ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); 978 add = REMOVE_MANAGED_RESOURCE; 979 if (ret != 2) { 980 ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); 981 add = ADD_MANAGED_RESOURCE; 982 if (ret != 2) 983 return -EINVAL; 984 } 985 } 986 if (end_addr < start_addr) 987 return -EINVAL; 988 989 ret = adjust_memory(s, add, start_addr, end_addr); 990 if (!ret) 991 s->resource_setup_new = 1; 992 993 return ret ? ret : count; 994 } 995 static DEVICE_ATTR(available_resources_mem, 0600, show_mem_db, store_mem_db); 996 997 static struct attribute *pccard_rsrc_attributes[] = { 998 &dev_attr_available_resources_io.attr, 999 &dev_attr_available_resources_mem.attr, 1000 NULL, 1001 }; 1002 1003 static const struct attribute_group rsrc_attributes = { 1004 .attrs = pccard_rsrc_attributes, 1005 }; 1006 1007 static int __devinit pccard_sysfs_add_rsrc(struct device *dev, 1008 struct class_interface *class_intf) 1009 { 1010 struct pcmcia_socket *s = dev_get_drvdata(dev); 1011 1012 if (s->resource_ops != &pccard_nonstatic_ops) 1013 return 0; 1014 return sysfs_create_group(&dev->kobj, &rsrc_attributes); 1015 } 1016 1017 static void __devexit pccard_sysfs_remove_rsrc(struct device *dev, 1018 struct class_interface *class_intf) 1019 { 1020 struct pcmcia_socket *s = dev_get_drvdata(dev); 1021 1022 if (s->resource_ops != &pccard_nonstatic_ops) 1023 return; 1024 sysfs_remove_group(&dev->kobj, &rsrc_attributes); 1025 } 1026 1027 static struct class_interface pccard_rsrc_interface __refdata = { 1028 .class = &pcmcia_socket_class, 1029 .add_dev = &pccard_sysfs_add_rsrc, 1030 .remove_dev = __devexit_p(&pccard_sysfs_remove_rsrc), 1031 }; 1032 1033 static int __init nonstatic_sysfs_init(void) 1034 { 1035 return class_interface_register(&pccard_rsrc_interface); 1036 } 1037 1038 static void __exit nonstatic_sysfs_exit(void) 1039 { 1040 class_interface_unregister(&pccard_rsrc_interface); 1041 } 1042 1043 module_init(nonstatic_sysfs_init); 1044 module_exit(nonstatic_sysfs_exit); 1045