1/* 2 * PCMCIA 16-bit resource management functions 3 * 4 * The initial developer of the original code is David A. Hinds 5 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds 6 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. 7 * 8 * Copyright (C) 1999 David A. Hinds 9 * Copyright (C) 2004-2005 Dominik Brodowski 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 as 13 * published by the Free Software Foundation. 14 * 15 */ 16 17#include <linux/module.h> 18#include <linux/kernel.h> 19#include <linux/interrupt.h> 20#include <linux/delay.h> 21#include <linux/pci.h> 22#include <linux/device.h> 23 24#define IN_CARD_SERVICES 25#include <pcmcia/cs_types.h> 26#include <pcmcia/ss.h> 27#include <pcmcia/cs.h> 28#include <pcmcia/bulkmem.h> 29#include <pcmcia/cistpl.h> 30#include <pcmcia/cisreg.h> 31#include <pcmcia/ds.h> 32 33#include "cs_internal.h" 34#include "ds_internal.h" 35 36 37/* Access speed for IO windows */ 38static int io_speed = 0; 39module_param(io_speed, int, 0444); 40 41 42#ifdef CONFIG_PCMCIA_PROBE 43#include <asm/irq.h> 44/* mask of IRQs already reserved by other cards, we should avoid using them */ 45static u8 pcmcia_used_irq[NR_IRQS]; 46#endif 47 48 49#ifdef DEBUG 50extern int ds_pc_debug; 51 52#define ds_dbg(skt, lvl, fmt, arg...) do { \ 53 if (ds_pc_debug >= lvl) \ 54 printk(KERN_DEBUG "pcmcia_resource: %s: " fmt, \ 55 cs_socket_name(skt) , ## arg); \ 56} while (0) 57#else 58#define ds_dbg(lvl, fmt, arg...) do { } while (0) 59#endif 60 61 62 63/** alloc_io_space 64 * 65 * Special stuff for managing IO windows, because they are scarce 66 */ 67 68static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base, 69 ioaddr_t num, u_int lines) 70{ 71 int i; 72 kio_addr_t try, align; 73 74 align = (*base) ? (lines ? 1<<lines : 0) : 1; 75 if (align && (align < num)) { 76 if (*base) { 77 ds_dbg(s, 0, "odd IO request: num %#x align %#lx\n", 78 num, align); 79 align = 0; 80 } else 81 while (align && (align < num)) align <<= 1; 82 } 83 if (*base & ~(align-1)) { 84 ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n", 85 *base, align); 86 align = 0; 87 } 88 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) { 89 *base = s->io_offset | (*base & 0x0fff); 90 return 0; 91 } 92 /* Check for an already-allocated window that must conflict with 93 * what was asked for. It is a hack because it does not catch all 94 * potential conflicts, just the most obvious ones. 95 */ 96 for (i = 0; i < MAX_IO_WIN; i++) 97 if ((s->io[i].res) && *base && 98 ((s->io[i].res->start & (align-1)) == *base)) 99 return 1; 100 for (i = 0; i < MAX_IO_WIN; i++) { 101 if (!s->io[i].res) { 102 s->io[i].res = pcmcia_find_io_region(*base, num, align, s); 103 if (s->io[i].res) { 104 *base = s->io[i].res->start; 105 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS); 106 s->io[i].InUse = num; 107 break; 108 } else 109 return 1; 110 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS)) 111 continue; 112 /* Try to extend top of window */ 113 try = s->io[i].res->end + 1; 114 if ((*base == 0) || (*base == try)) 115 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start, 116 s->io[i].res->end + num, s) == 0) { 117 *base = try; 118 s->io[i].InUse += num; 119 break; 120 } 121 /* Try to extend bottom of window */ 122 try = s->io[i].res->start - num; 123 if ((*base == 0) || (*base == try)) 124 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num, 125 s->io[i].res->end, s) == 0) { 126 *base = try; 127 s->io[i].InUse += num; 128 break; 129 } 130 } 131 return (i == MAX_IO_WIN); 132} /* alloc_io_space */ 133 134 135static void release_io_space(struct pcmcia_socket *s, ioaddr_t base, 136 ioaddr_t num) 137{ 138 int i; 139 140 for (i = 0; i < MAX_IO_WIN; i++) { 141 if (!s->io[i].res) 142 continue; 143 if ((s->io[i].res->start <= base) && 144 (s->io[i].res->end >= base+num-1)) { 145 s->io[i].InUse -= num; 146 /* Free the window if no one else is using it */ 147 if (s->io[i].InUse == 0) { 148 release_resource(s->io[i].res); 149 kfree(s->io[i].res); 150 s->io[i].res = NULL; 151 } 152 } 153 } 154} /* release_io_space */ 155 156 157/** pccard_access_configuration_register 158 * 159 * Access_configuration_register() reads and writes configuration 160 * registers in attribute memory. Memory window 0 is reserved for 161 * this and the tuple reading services. 162 */ 163 164int pcmcia_access_configuration_register(struct pcmcia_device *p_dev, 165 conf_reg_t *reg) 166{ 167 struct pcmcia_socket *s; 168 config_t *c; 169 int addr; 170 u_char val; 171 172 if (!p_dev || !p_dev->function_config) 173 return CS_NO_CARD; 174 175 s = p_dev->socket; 176 c = p_dev->function_config; 177 178 if (!(c->state & CONFIG_LOCKED)) 179 return CS_CONFIGURATION_LOCKED; 180 181 addr = (c->ConfigBase + reg->Offset) >> 1; 182 183 switch (reg->Action) { 184 case CS_READ: 185 pcmcia_read_cis_mem(s, 1, addr, 1, &val); 186 reg->Value = val; 187 break; 188 case CS_WRITE: 189 val = reg->Value; 190 pcmcia_write_cis_mem(s, 1, addr, 1, &val); 191 break; 192 default: 193 return CS_BAD_ARGS; 194 break; 195 } 196 return CS_SUCCESS; 197} /* pcmcia_access_configuration_register */ 198EXPORT_SYMBOL(pcmcia_access_configuration_register); 199 200 201int pccard_get_configuration_info(struct pcmcia_socket *s, 202 struct pcmcia_device *p_dev, 203 config_info_t *config) 204{ 205 config_t *c; 206 207 if (!(s->state & SOCKET_PRESENT)) 208 return CS_NO_CARD; 209 210 211#ifdef CONFIG_CARDBUS 212 if (s->state & SOCKET_CARDBUS) { 213 memset(config, 0, sizeof(config_info_t)); 214 config->Vcc = s->socket.Vcc; 215 config->Vpp1 = config->Vpp2 = s->socket.Vpp; 216 config->Option = s->cb_dev->subordinate->number; 217 if (s->state & SOCKET_CARDBUS_CONFIG) { 218 config->Attributes = CONF_VALID_CLIENT; 219 config->IntType = INT_CARDBUS; 220 config->AssignedIRQ = s->irq.AssignedIRQ; 221 if (config->AssignedIRQ) 222 config->Attributes |= CONF_ENABLE_IRQ; 223 if (s->io[0].res) { 224 config->BasePort1 = s->io[0].res->start; 225 config->NumPorts1 = s->io[0].res->end - config->BasePort1 + 1; 226 } 227 } 228 return CS_SUCCESS; 229 } 230#endif 231 232 if (p_dev) { 233 c = p_dev->function_config; 234 config->Function = p_dev->func; 235 } else { 236 c = NULL; 237 config->Function = 0; 238 } 239 240 if ((c == NULL) || !(c->state & CONFIG_LOCKED)) { 241 config->Attributes = 0; 242 config->Vcc = s->socket.Vcc; 243 config->Vpp1 = config->Vpp2 = s->socket.Vpp; 244 return CS_SUCCESS; 245 } 246 247 config->Attributes = c->Attributes | CONF_VALID_CLIENT; 248 config->Vcc = s->socket.Vcc; 249 config->Vpp1 = config->Vpp2 = s->socket.Vpp; 250 config->IntType = c->IntType; 251 config->ConfigBase = c->ConfigBase; 252 config->Status = c->Status; 253 config->Pin = c->Pin; 254 config->Copy = c->Copy; 255 config->Option = c->Option; 256 config->ExtStatus = c->ExtStatus; 257 config->Present = config->CardValues = c->CardValues; 258 config->IRQAttributes = c->irq.Attributes; 259 config->AssignedIRQ = s->irq.AssignedIRQ; 260 config->BasePort1 = c->io.BasePort1; 261 config->NumPorts1 = c->io.NumPorts1; 262 config->Attributes1 = c->io.Attributes1; 263 config->BasePort2 = c->io.BasePort2; 264 config->NumPorts2 = c->io.NumPorts2; 265 config->Attributes2 = c->io.Attributes2; 266 config->IOAddrLines = c->io.IOAddrLines; 267 268 return CS_SUCCESS; 269} /* pccard_get_configuration_info */ 270 271int pcmcia_get_configuration_info(struct pcmcia_device *p_dev, 272 config_info_t *config) 273{ 274 return pccard_get_configuration_info(p_dev->socket, p_dev, 275 config); 276} 277EXPORT_SYMBOL(pcmcia_get_configuration_info); 278 279 280/** pcmcia_get_window 281 */ 282int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle, 283 int idx, win_req_t *req) 284{ 285 window_t *win; 286 int w; 287 288 if (!s || !(s->state & SOCKET_PRESENT)) 289 return CS_NO_CARD; 290 for (w = idx; w < MAX_WIN; w++) 291 if (s->state & SOCKET_WIN_REQ(w)) 292 break; 293 if (w == MAX_WIN) 294 return CS_NO_MORE_ITEMS; 295 win = &s->win[w]; 296 req->Base = win->ctl.res->start; 297 req->Size = win->ctl.res->end - win->ctl.res->start + 1; 298 req->AccessSpeed = win->ctl.speed; 299 req->Attributes = 0; 300 if (win->ctl.flags & MAP_ATTRIB) 301 req->Attributes |= WIN_MEMORY_TYPE_AM; 302 if (win->ctl.flags & MAP_ACTIVE) 303 req->Attributes |= WIN_ENABLE; 304 if (win->ctl.flags & MAP_16BIT) 305 req->Attributes |= WIN_DATA_WIDTH_16; 306 if (win->ctl.flags & MAP_USE_WAIT) 307 req->Attributes |= WIN_USE_WAIT; 308 *handle = win; 309 return CS_SUCCESS; 310} /* pcmcia_get_window */ 311EXPORT_SYMBOL(pcmcia_get_window); 312 313 314/** pccard_get_status 315 * 316 * Get the current socket state bits. We don't support the latched 317 * SocketState yet: I haven't seen any point for it. 318 */ 319 320int pccard_get_status(struct pcmcia_socket *s, struct pcmcia_device *p_dev, 321 cs_status_t *status) 322{ 323 config_t *c; 324 int val; 325 326 s->ops->get_status(s, &val); 327 status->CardState = status->SocketState = 0; 328 status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0; 329 status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0; 330 status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0; 331 status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0; 332 if (s->state & SOCKET_SUSPEND) 333 status->CardState |= CS_EVENT_PM_SUSPEND; 334 if (!(s->state & SOCKET_PRESENT)) 335 return CS_NO_CARD; 336 337 c = (p_dev) ? p_dev->function_config : NULL; 338 339 if ((c != NULL) && (c->state & CONFIG_LOCKED) && 340 (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) { 341 u_char reg; 342 if (c->CardValues & PRESENT_PIN_REPLACE) { 343 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, ®); 344 status->CardState |= 345 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0; 346 status->CardState |= 347 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0; 348 status->CardState |= 349 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0; 350 status->CardState |= 351 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0; 352 } else { 353 /* No PRR? Then assume we're always ready */ 354 status->CardState |= CS_EVENT_READY_CHANGE; 355 } 356 if (c->CardValues & PRESENT_EXT_STATUS) { 357 pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, ®); 358 status->CardState |= 359 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0; 360 } 361 return CS_SUCCESS; 362 } 363 status->CardState |= 364 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0; 365 status->CardState |= 366 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0; 367 status->CardState |= 368 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0; 369 status->CardState |= 370 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0; 371 return CS_SUCCESS; 372} /* pccard_get_status */ 373 374int pcmcia_get_status(struct pcmcia_device *p_dev, cs_status_t *status) 375{ 376 return pccard_get_status(p_dev->socket, p_dev, status); 377} 378EXPORT_SYMBOL(pcmcia_get_status); 379 380 381 382/** pcmcia_get_mem_page 383 * 384 * Change the card address of an already open memory window. 385 */ 386int pcmcia_get_mem_page(window_handle_t win, memreq_t *req) 387{ 388 if ((win == NULL) || (win->magic != WINDOW_MAGIC)) 389 return CS_BAD_HANDLE; 390 req->Page = 0; 391 req->CardOffset = win->ctl.card_start; 392 return CS_SUCCESS; 393} /* pcmcia_get_mem_page */ 394EXPORT_SYMBOL(pcmcia_get_mem_page); 395 396 397int pcmcia_map_mem_page(window_handle_t win, memreq_t *req) 398{ 399 struct pcmcia_socket *s; 400 if ((win == NULL) || (win->magic != WINDOW_MAGIC)) 401 return CS_BAD_HANDLE; 402 if (req->Page != 0) 403 return CS_BAD_PAGE; 404 s = win->sock; 405 win->ctl.card_start = req->CardOffset; 406 if (s->ops->set_mem_map(s, &win->ctl) != 0) 407 return CS_BAD_OFFSET; 408 return CS_SUCCESS; 409} /* pcmcia_map_mem_page */ 410EXPORT_SYMBOL(pcmcia_map_mem_page); 411 412 413/** pcmcia_modify_configuration 414 * 415 * Modify a locked socket configuration 416 */ 417int pcmcia_modify_configuration(struct pcmcia_device *p_dev, 418 modconf_t *mod) 419{ 420 struct pcmcia_socket *s; 421 config_t *c; 422 423 s = p_dev->socket; 424 c = p_dev->function_config; 425 426 if (!(s->state & SOCKET_PRESENT)) 427 return CS_NO_CARD; 428 if (!(c->state & CONFIG_LOCKED)) 429 return CS_CONFIGURATION_LOCKED; 430 431 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) { 432 if (mod->Attributes & CONF_ENABLE_IRQ) { 433 c->Attributes |= CONF_ENABLE_IRQ; 434 s->socket.io_irq = s->irq.AssignedIRQ; 435 } else { 436 c->Attributes &= ~CONF_ENABLE_IRQ; 437 s->socket.io_irq = 0; 438 } 439 s->ops->set_socket(s, &s->socket); 440 } 441 442 if (mod->Attributes & CONF_VCC_CHANGE_VALID) 443 return CS_BAD_VCC; 444 445 /* We only allow changing Vpp1 and Vpp2 to the same value */ 446 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) && 447 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) { 448 if (mod->Vpp1 != mod->Vpp2) 449 return CS_BAD_VPP; 450 s->socket.Vpp = mod->Vpp1; 451 if (s->ops->set_socket(s, &s->socket)) 452 return CS_BAD_VPP; 453 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) || 454 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) 455 return CS_BAD_VPP; 456 457 if (mod->Attributes & CONF_IO_CHANGE_WIDTH) { 458 pccard_io_map io_off = { 0, 0, 0, 0, 1 }; 459 pccard_io_map io_on; 460 int i; 461 462 io_on.speed = io_speed; 463 for (i = 0; i < MAX_IO_WIN; i++) { 464 if (!s->io[i].res) 465 continue; 466 io_off.map = i; 467 io_on.map = i; 468 469 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8; 470 io_on.start = s->io[i].res->start; 471 io_on.stop = s->io[i].res->end; 472 473 s->ops->set_io_map(s, &io_off); 474 mdelay(40); 475 s->ops->set_io_map(s, &io_on); 476 } 477 } 478 479 return CS_SUCCESS; 480} /* modify_configuration */ 481EXPORT_SYMBOL(pcmcia_modify_configuration); 482 483 484int pcmcia_release_configuration(struct pcmcia_device *p_dev) 485{ 486 pccard_io_map io = { 0, 0, 0, 0, 1 }; 487 struct pcmcia_socket *s = p_dev->socket; 488 config_t *c = p_dev->function_config; 489 int i; 490 491 if (p_dev->_locked) { 492 p_dev->_locked = 0; 493 if (--(s->lock_count) == 0) { 494 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */ 495 s->socket.Vpp = 0; 496 s->socket.io_irq = 0; 497 s->ops->set_socket(s, &s->socket); 498 } 499 } 500 if (c->state & CONFIG_LOCKED) { 501 c->state &= ~CONFIG_LOCKED; 502 if (c->state & CONFIG_IO_REQ) 503 for (i = 0; i < MAX_IO_WIN; i++) { 504 if (!s->io[i].res) 505 continue; 506 s->io[i].Config--; 507 if (s->io[i].Config != 0) 508 continue; 509 io.map = i; 510 s->ops->set_io_map(s, &io); 511 } 512 } 513 514 return CS_SUCCESS; 515} /* pcmcia_release_configuration */ 516 517 518/** pcmcia_release_io 519 * 520 * Release_io() releases the I/O ranges allocated by a client. This 521 * may be invoked some time after a card ejection has already dumped 522 * the actual socket configuration, so if the client is "stale", we 523 * don't bother checking the port ranges against the current socket 524 * values. 525 */ 526static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req) 527{ 528 struct pcmcia_socket *s = p_dev->socket; 529 config_t *c = p_dev->function_config; 530 531 if (!p_dev->_io ) 532 return CS_BAD_HANDLE; 533 534 p_dev->_io = 0; 535 536 if ((c->io.BasePort1 != req->BasePort1) || 537 (c->io.NumPorts1 != req->NumPorts1) || 538 (c->io.BasePort2 != req->BasePort2) || 539 (c->io.NumPorts2 != req->NumPorts2)) 540 return CS_BAD_ARGS; 541 542 c->state &= ~CONFIG_IO_REQ; 543 544 release_io_space(s, req->BasePort1, req->NumPorts1); 545 if (req->NumPorts2) 546 release_io_space(s, req->BasePort2, req->NumPorts2); 547 548 return CS_SUCCESS; 549} /* pcmcia_release_io */ 550 551 552static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req) 553{ 554 struct pcmcia_socket *s = p_dev->socket; 555 config_t *c= p_dev->function_config; 556 557 if (!p_dev->_irq) 558 return CS_BAD_HANDLE; 559 p_dev->_irq = 0; 560 561 if (c->state & CONFIG_LOCKED) 562 return CS_CONFIGURATION_LOCKED; 563 if (c->irq.Attributes != req->Attributes) 564 return CS_BAD_ATTRIBUTE; 565 if (s->irq.AssignedIRQ != req->AssignedIRQ) 566 return CS_BAD_IRQ; 567 if (--s->irq.Config == 0) { 568 c->state &= ~CONFIG_IRQ_REQ; 569 s->irq.AssignedIRQ = 0; 570 } 571 572 if (req->Attributes & IRQ_HANDLE_PRESENT) { 573 free_irq(req->AssignedIRQ, req->Instance); 574 } 575 576#ifdef CONFIG_PCMCIA_PROBE 577 pcmcia_used_irq[req->AssignedIRQ]--; 578#endif 579 580 return CS_SUCCESS; 581} /* pcmcia_release_irq */ 582 583 584int pcmcia_release_window(window_handle_t win) 585{ 586 struct pcmcia_socket *s; 587 588 if ((win == NULL) || (win->magic != WINDOW_MAGIC)) 589 return CS_BAD_HANDLE; 590 s = win->sock; 591 if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) 592 return CS_BAD_HANDLE; 593 594 /* Shut down memory window */ 595 win->ctl.flags &= ~MAP_ACTIVE; 596 s->ops->set_mem_map(s, &win->ctl); 597 s->state &= ~SOCKET_WIN_REQ(win->index); 598 599 /* Release system memory */ 600 if (win->ctl.res) { 601 release_resource(win->ctl.res); 602 kfree(win->ctl.res); 603 win->ctl.res = NULL; 604 } 605 win->handle->_win &= ~CLIENT_WIN_REQ(win->index); 606 607 win->magic = 0; 608 609 return CS_SUCCESS; 610} /* pcmcia_release_window */ 611EXPORT_SYMBOL(pcmcia_release_window); 612 613 614int pcmcia_request_configuration(struct pcmcia_device *p_dev, 615 config_req_t *req) 616{ 617 int i; 618 u_int base; 619 struct pcmcia_socket *s = p_dev->socket; 620 config_t *c; 621 pccard_io_map iomap; 622 623 if (!(s->state & SOCKET_PRESENT)) 624 return CS_NO_CARD; 625 626 if (req->IntType & INT_CARDBUS) 627 return CS_UNSUPPORTED_MODE; 628 c = p_dev->function_config; 629 if (c->state & CONFIG_LOCKED) 630 return CS_CONFIGURATION_LOCKED; 631 632 /* Do power control. We don't allow changes in Vcc. */ 633 s->socket.Vpp = req->Vpp; 634 if (s->ops->set_socket(s, &s->socket)) 635 return CS_BAD_VPP; 636 637 /* Pick memory or I/O card, DMA mode, interrupt */ 638 c->IntType = req->IntType; 639 c->Attributes = req->Attributes; 640 if (req->IntType & INT_MEMORY_AND_IO) 641 s->socket.flags |= SS_IOCARD; 642 if (req->IntType & INT_ZOOMED_VIDEO) 643 s->socket.flags |= SS_ZVCARD | SS_IOCARD; 644 if (req->Attributes & CONF_ENABLE_DMA) 645 s->socket.flags |= SS_DMA_MODE; 646 if (req->Attributes & CONF_ENABLE_SPKR) 647 s->socket.flags |= SS_SPKR_ENA; 648 if (req->Attributes & CONF_ENABLE_IRQ) 649 s->socket.io_irq = s->irq.AssignedIRQ; 650 else 651 s->socket.io_irq = 0; 652 s->ops->set_socket(s, &s->socket); 653 s->lock_count++; 654 655 /* Set up CIS configuration registers */ 656 base = c->ConfigBase = req->ConfigBase; 657 c->CardValues = req->Present; 658 if (req->Present & PRESENT_COPY) { 659 c->Copy = req->Copy; 660 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy); 661 } 662 if (req->Present & PRESENT_OPTION) { 663 if (s->functions == 1) { 664 c->Option = req->ConfigIndex & COR_CONFIG_MASK; 665 } else { 666 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK; 667 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA; 668 if (req->Present & PRESENT_IOBASE_0) 669 c->Option |= COR_ADDR_DECODE; 670 } 671 if (c->state & CONFIG_IRQ_REQ) 672 if (!(c->irq.Attributes & IRQ_FORCED_PULSE)) 673 c->Option |= COR_LEVEL_REQ; 674 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option); 675 mdelay(40); 676 } 677 if (req->Present & PRESENT_STATUS) { 678 c->Status = req->Status; 679 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status); 680 } 681 if (req->Present & PRESENT_PIN_REPLACE) { 682 c->Pin = req->Pin; 683 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin); 684 } 685 if (req->Present & PRESENT_EXT_STATUS) { 686 c->ExtStatus = req->ExtStatus; 687 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus); 688 } 689 if (req->Present & PRESENT_IOBASE_0) { 690 u_char b = c->io.BasePort1 & 0xff; 691 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b); 692 b = (c->io.BasePort1 >> 8) & 0xff; 693 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b); 694 } 695 if (req->Present & PRESENT_IOSIZE) { 696 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1; 697 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b); 698 } 699 700 /* Configure I/O windows */ 701 if (c->state & CONFIG_IO_REQ) { 702 iomap.speed = io_speed; 703 for (i = 0; i < MAX_IO_WIN; i++) 704 if (s->io[i].res) { 705 iomap.map = i; 706 iomap.flags = MAP_ACTIVE; 707 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) { 708 case IO_DATA_PATH_WIDTH_16: 709 iomap.flags |= MAP_16BIT; break; 710 case IO_DATA_PATH_WIDTH_AUTO: 711 iomap.flags |= MAP_AUTOSZ; break; 712 default: 713 break; 714 } 715 iomap.start = s->io[i].res->start; 716 iomap.stop = s->io[i].res->end; 717 s->ops->set_io_map(s, &iomap); 718 s->io[i].Config++; 719 } 720 } 721 722 c->state |= CONFIG_LOCKED; 723 p_dev->_locked = 1; 724 return CS_SUCCESS; 725} /* pcmcia_request_configuration */ 726EXPORT_SYMBOL(pcmcia_request_configuration); 727 728 729/** pcmcia_request_io 730 * 731 * Request_io() reserves ranges of port addresses for a socket. 732 * I have not implemented range sharing or alias addressing. 733 */ 734int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req) 735{ 736 struct pcmcia_socket *s = p_dev->socket; 737 config_t *c; 738 739 if (!(s->state & SOCKET_PRESENT)) 740 return CS_NO_CARD; 741 742 if (!req) 743 return CS_UNSUPPORTED_MODE; 744 c = p_dev->function_config; 745 if (c->state & CONFIG_LOCKED) 746 return CS_CONFIGURATION_LOCKED; 747 if (c->state & CONFIG_IO_REQ) 748 return CS_IN_USE; 749 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) 750 return CS_BAD_ATTRIBUTE; 751 if ((req->NumPorts2 > 0) && 752 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) 753 return CS_BAD_ATTRIBUTE; 754 755 if (alloc_io_space(s, req->Attributes1, &req->BasePort1, 756 req->NumPorts1, req->IOAddrLines)) 757 return CS_IN_USE; 758 759 if (req->NumPorts2) { 760 if (alloc_io_space(s, req->Attributes2, &req->BasePort2, 761 req->NumPorts2, req->IOAddrLines)) { 762 release_io_space(s, req->BasePort1, req->NumPorts1); 763 return CS_IN_USE; 764 } 765 } 766 767 c->io = *req; 768 c->state |= CONFIG_IO_REQ; 769 p_dev->_io = 1; 770 return CS_SUCCESS; 771} /* pcmcia_request_io */ 772EXPORT_SYMBOL(pcmcia_request_io); 773 774 775/** pcmcia_request_irq 776 * 777 * Request_irq() reserves an irq for this client. 778 * 779 * Also, since Linux only reserves irq's when they are actually 780 * hooked, we don't guarantee that an irq will still be available 781 * when the configuration is locked. Now that I think about it, 782 * there might be a way to fix this using a dummy handler. 783 */ 784 785#ifdef CONFIG_PCMCIA_PROBE 786static irqreturn_t test_action(int cpl, void *dev_id) 787{ 788 return IRQ_NONE; 789} 790#endif 791 792int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req) 793{ 794 struct pcmcia_socket *s = p_dev->socket; 795 config_t *c; 796 int ret = CS_IN_USE, irq = 0; 797 int type; 798 799 if (!(s->state & SOCKET_PRESENT)) 800 return CS_NO_CARD; 801 c = p_dev->function_config; 802 if (c->state & CONFIG_LOCKED) 803 return CS_CONFIGURATION_LOCKED; 804 if (c->state & CONFIG_IRQ_REQ) 805 return CS_IN_USE; 806 807 /* Decide what type of interrupt we are registering */ 808 type = 0; 809 if (s->functions > 1) /* All of this ought to be handled higher up */ 810 type = IRQF_SHARED; 811 if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) 812 type = IRQF_SHARED; 813 814#ifdef CONFIG_PCMCIA_PROBE 815 if (s->irq.AssignedIRQ != 0) { 816 /* If the interrupt is already assigned, it must be the same */ 817 irq = s->irq.AssignedIRQ; 818 } else { 819 int try; 820 u32 mask = s->irq_mask; 821 void *data = &p_dev->dev.driver; /* something unique to this device */ 822 823 for (try = 0; try < 64; try++) { 824 irq = try % 32; 825 826 /* marked as available by driver, and not blocked by userspace? */ 827 if (!((mask >> irq) & 1)) 828 continue; 829 830 /* avoid an IRQ which is already used by a PCMCIA card */ 831 if ((try < 32) && pcmcia_used_irq[irq]) 832 continue; 833 834 /* register the correct driver, if possible, of check whether 835 * registering a dummy handle works, i.e. if the IRQ isn't 836 * marked as used by the kernel resource management core */ 837 ret = request_irq(irq, 838 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action, 839 type, 840 p_dev->devname, 841 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data); 842 if (!ret) { 843 if (!(req->Attributes & IRQ_HANDLE_PRESENT)) 844 free_irq(irq, data); 845 break; 846 } 847 } 848 } 849#endif 850 /* only assign PCI irq if no IRQ already assigned */ 851 if (ret && !s->irq.AssignedIRQ) { 852 if (!s->pci_irq) 853 return ret; 854 type = IRQF_SHARED; 855 irq = s->pci_irq; 856 } 857 858 if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) { 859 if (request_irq(irq, req->Handler, type, p_dev->devname, req->Instance)) 860 return CS_IN_USE; 861 } 862 863 /* Make sure the fact the request type was overridden is passed back */ 864 if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) { 865 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING; 866 printk(KERN_WARNING "pcmcia: request for exclusive IRQ could not be fulfilled.\n"); 867 printk(KERN_WARNING "pcmcia: the driver needs updating to supported shared IRQ lines.\n"); 868 } 869 c->irq.Attributes = req->Attributes; 870 s->irq.AssignedIRQ = req->AssignedIRQ = irq; 871 s->irq.Config++; 872 873 c->state |= CONFIG_IRQ_REQ; 874 p_dev->_irq = 1; 875 876#ifdef CONFIG_PCMCIA_PROBE 877 pcmcia_used_irq[irq]++; 878#endif 879 880 return CS_SUCCESS; 881} /* pcmcia_request_irq */ 882EXPORT_SYMBOL(pcmcia_request_irq); 883 884 885/** pcmcia_request_window 886 * 887 * Request_window() establishes a mapping between card memory space 888 * and system memory space. 889 */ 890int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh) 891{ 892 struct pcmcia_socket *s = (*p_dev)->socket; 893 window_t *win; 894 u_long align; 895 int w; 896 897 if (!(s->state & SOCKET_PRESENT)) 898 return CS_NO_CARD; 899 if (req->Attributes & (WIN_PAGED | WIN_SHARED)) 900 return CS_BAD_ATTRIBUTE; 901 902 /* Window size defaults to smallest available */ 903 if (req->Size == 0) 904 req->Size = s->map_size; 905 align = (((s->features & SS_CAP_MEM_ALIGN) || 906 (req->Attributes & WIN_STRICT_ALIGN)) ? 907 req->Size : s->map_size); 908 if (req->Size & (s->map_size-1)) 909 return CS_BAD_SIZE; 910 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) || 911 (req->Base & (align-1))) 912 return CS_BAD_BASE; 913 if (req->Base) 914 align = 0; 915 916 /* Allocate system memory window */ 917 for (w = 0; w < MAX_WIN; w++) 918 if (!(s->state & SOCKET_WIN_REQ(w))) break; 919 if (w == MAX_WIN) 920 return CS_OUT_OF_RESOURCE; 921 922 win = &s->win[w]; 923 win->magic = WINDOW_MAGIC; 924 win->index = w; 925 win->handle = *p_dev; 926 win->sock = s; 927 928 if (!(s->features & SS_CAP_STATIC_MAP)) { 929 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align, 930 (req->Attributes & WIN_MAP_BELOW_1MB), s); 931 if (!win->ctl.res) 932 return CS_IN_USE; 933 } 934 (*p_dev)->_win |= CLIENT_WIN_REQ(w); 935 936 /* Configure the socket controller */ 937 win->ctl.map = w+1; 938 win->ctl.flags = 0; 939 win->ctl.speed = req->AccessSpeed; 940 if (req->Attributes & WIN_MEMORY_TYPE) 941 win->ctl.flags |= MAP_ATTRIB; 942 if (req->Attributes & WIN_ENABLE) 943 win->ctl.flags |= MAP_ACTIVE; 944 if (req->Attributes & WIN_DATA_WIDTH_16) 945 win->ctl.flags |= MAP_16BIT; 946 if (req->Attributes & WIN_USE_WAIT) 947 win->ctl.flags |= MAP_USE_WAIT; 948 win->ctl.card_start = 0; 949 if (s->ops->set_mem_map(s, &win->ctl) != 0) 950 return CS_BAD_ARGS; 951 s->state |= SOCKET_WIN_REQ(w); 952 953 /* Return window handle */ 954 if (s->features & SS_CAP_STATIC_MAP) { 955 req->Base = win->ctl.static_start; 956 } else { 957 req->Base = win->ctl.res->start; 958 } 959 *wh = win; 960 961 return CS_SUCCESS; 962} /* pcmcia_request_window */ 963EXPORT_SYMBOL(pcmcia_request_window); 964 965void pcmcia_disable_device(struct pcmcia_device *p_dev) { 966 pcmcia_release_configuration(p_dev); 967 pcmcia_release_io(p_dev, &p_dev->io); 968 pcmcia_release_irq(p_dev, &p_dev->irq); 969 if (&p_dev->win) 970 pcmcia_release_window(p_dev->win); 971} 972EXPORT_SYMBOL(pcmcia_disable_device); 973