SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/pcmcia/pcmcia_resource.c

   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/config.h>
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/delay.h>
  22 #include <linux/pci.h>
  23 #include <linux/device.h>
  24
  25 #define IN_CARD_SERVICES
  26 #include <pcmcia/version.h>
  27 #include <pcmcia/cs_types.h>
  28 #include <pcmcia/ss.h>
  29 #include <pcmcia/cs.h>
  30 #include <pcmcia/bulkmem.h>
  31 #include <pcmcia/cistpl.h>
  32 #include <pcmcia/cisreg.h>
  33 #include <pcmcia/ds.h>
  34
  35 #include "cs_internal.h"
  36 #include "ds_internal.h"
  37
  38
  39 /* Access speed for IO windows */
  40 static int io_speed = 0;
  41 module_param(io_speed, int, 0444);
  42
  43
  44 #ifdef CONFIG_PCMCIA_PROBE
  45 /* mask of IRQs already reserved by other cards, we should avoid using them */
  46 static u8 pcmcia_used_irq[NR_IRQS];
  47 #endif
  48
  49
  50 #ifdef DEBUG
  51 extern int ds_pc_debug;
  52 #define cs_socket_name(skt)    ((skt)->dev.class_id)
  53
  54 #define ds_dbg(skt, lvl, fmt, arg...) do {                      \
  55         if (ds_pc_debug >= lvl)                                 \
  56                 printk(KERN_DEBUG "pcmcia_resource: %s: " fmt,  \
  57                         cs_socket_name(skt) , ## arg);          \
  58 } while (0)
  59 #else
  60 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
  61 #endif
  62
  63
  64
  65 /** alloc_io_space
  66  *
  67  * Special stuff for managing IO windows, because they are scarce
  68  */
  69
  70 static int alloc_io_space(struct pcmcia_socket *s, u_int attr, ioaddr_t *base,
  71                           ioaddr_t num, u_int lines)
  72 {
  73         int i;
  74         kio_addr_t try, align;
  75
  76         align = (*base) ? (lines ? 1<<lines : 0) : 1;
  77         if (align && (align < num)) {
  78                 if (*base) {
  79                         ds_dbg(s, 0, "odd IO request: num %#x align %#lx\n",
  80                                num, align);
  81                         align = 0;
  82                 } else
  83                         while (align && (align < num)) align <<= 1;
  84         }
  85         if (*base & ~(align-1)) {
  86                 ds_dbg(s, 0, "odd IO request: base %#x align %#lx\n",
  87                        *base, align);
  88                 align = 0;
  89         }
  90         if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
  91                 *base = s->io_offset | (*base & 0x0fff);
  92                 s->io[0].Attributes = attr;
  93                 return 0;
  94         }
  95         /* Check for an already-allocated window that must conflict with
  96          * what was asked for.  It is a hack because it does not catch all
  97          * potential conflicts, just the most obvious ones.
  98          */
  99         for (i = 0; i < MAX_IO_WIN; i++)
 100                 if ((s->io[i].NumPorts != 0) &&
 101                     ((s->io[i].BasePort & (align-1)) == *base))
 102                         return 1;
 103         for (i = 0; i < MAX_IO_WIN; i++) {
 104                 if (s->io[i].NumPorts == 0) {
 105                         s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
 106                         if (s->io[i].res) {
 107                                 s->io[i].Attributes = attr;
 108                                 s->io[i].BasePort = *base = s->io[i].res->start;
 109                                 s->io[i].NumPorts = s->io[i].InUse = num;
 110                                 break;
 111                         } else
 112                                 return 1;
 113                 } else if (s->io[i].Attributes != attr)
 114                         continue;
 115                 /* Try to extend top of window */
 116                 try = s->io[i].BasePort + s->io[i].NumPorts;
 117                 if ((*base == 0) || (*base == try))
 118                         if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
 119                                                     s->io[i].res->end + num, s) == 0) {
 120                                 *base = try;
 121                                 s->io[i].NumPorts += num;
 122                                 s->io[i].InUse += num;
 123                                 break;
 124                         }
 125                 /* Try to extend bottom of window */
 126                 try = s->io[i].BasePort - num;
 127                 if ((*base == 0) || (*base == try))
 128                         if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
 129                                                     s->io[i].res->end, s) == 0) {
 130                                 s->io[i].BasePort = *base = try;
 131                                 s->io[i].NumPorts += num;
 132                                 s->io[i].InUse += num;
 133                                 break;
 134                         }
 135         }
 136         return (i == MAX_IO_WIN);
 137 } /* alloc_io_space */
 138
 139
 140 static void release_io_space(struct pcmcia_socket *s, ioaddr_t base,
 141                              ioaddr_t num)
 142 {
 143         int i;
 144
 145         for (i = 0; i < MAX_IO_WIN; i++) {
 146                 if ((s->io[i].BasePort <= base) &&
 147                     (s->io[i].BasePort+s->io[i].NumPorts >= base+num)) {
 148                         s->io[i].InUse -= num;
 149                         /* Free the window if no one else is using it */
 150                         if (s->io[i].InUse == 0) {
 151                                 s->io[i].NumPorts = 0;
 152                                 release_resource(s->io[i].res);
 153                                 kfree(s->io[i].res);
 154                                 s->io[i].res = NULL;
 155                         }
 156                 }
 157         }
 158 } /* release_io_space */
 159
 160
 161 /** pccard_access_configuration_register
 162  *
 163  * Access_configuration_register() reads and writes configuration
 164  * registers in attribute memory.  Memory window 0 is reserved for
 165  * this and the tuple reading services.
 166  */
 167
 168 int pccard_access_configuration_register(struct pcmcia_socket *s,
 169                                          unsigned int function,
 170                                          conf_reg_t *reg)
 171 {
 172         config_t *c;
 173         int addr;
 174         u_char val;
 175
 176         if (!s || !s->config)
 177                 return CS_NO_CARD;
 178
 179         c = &s->config[function];
 180
 181         if (c == NULL)
 182                 return CS_NO_CARD;
 183
 184         if (!(c->state & CONFIG_LOCKED))
 185                 return CS_CONFIGURATION_LOCKED;
 186
 187         addr = (c->ConfigBase + reg->Offset) >> 1;
 188
 189         switch (reg->Action) {
 190         case CS_READ:
 191                 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
 192                 reg->Value = val;
 193                 break;
 194         case CS_WRITE:
 195                 val = reg->Value;
 196                 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
 197                 break;
 198         default:
 199                 return CS_BAD_ARGS;
 200                 break;
 201         }
 202         return CS_SUCCESS;
 203 } /* pccard_access_configuration_register */
 204
 205 int pcmcia_access_configuration_register(client_handle_t handle,
 206                                          conf_reg_t *reg)
 207 {
 208         struct pcmcia_socket *s;
 209         s = SOCKET(handle);
 210         return pccard_access_configuration_register(s, handle->func, reg);
 211 }
 212 EXPORT_SYMBOL(pcmcia_access_configuration_register);
 213
 214
 215
 216 int pccard_get_configuration_info(struct pcmcia_socket *s,
 217                                   unsigned int function,
 218                                   config_info_t *config)
 219 {
 220         config_t *c;
 221
 222         if (!(s->state & SOCKET_PRESENT))
 223                 return CS_NO_CARD;
 224
 225         config->Function = function;
 226
 227 #ifdef CONFIG_CARDBUS
 228         if (s->state & SOCKET_CARDBUS) {
 229                 memset(config, 0, sizeof(config_info_t));
 230                 config->Vcc = s->socket.Vcc;
 231                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
 232                 config->Option = s->cb_dev->subordinate->number;
 233                 if (s->state & SOCKET_CARDBUS_CONFIG) {
 234                         config->Attributes = CONF_VALID_CLIENT;
 235                         config->IntType = INT_CARDBUS;
 236                         config->AssignedIRQ = s->irq.AssignedIRQ;
 237                         if (config->AssignedIRQ)
 238                                 config->Attributes |= CONF_ENABLE_IRQ;
 239                         config->BasePort1 = s->io[0].BasePort;
 240                         config->NumPorts1 = s->io[0].NumPorts;
 241                 }
 242                 return CS_SUCCESS;
 243         }
 244 #endif
 245
 246         c = (s->config != NULL) ? &s->config[function] : NULL;
 247
 248         if ((c == NULL) || !(c->state & CONFIG_LOCKED)) {
 249                 config->Attributes = 0;
 250                 config->Vcc = s->socket.Vcc;
 251                 config->Vpp1 = config->Vpp2 = s->socket.Vpp;
 252                 return CS_SUCCESS;
 253         }
 254
 255         /* !!! This is a hack !!! */
 256         memcpy(&config->Attributes, &c->Attributes, sizeof(config_t));
 257         config->Attributes |= CONF_VALID_CLIENT;
 258         config->CardValues = c->CardValues;
 259         config->IRQAttributes = c->irq.Attributes;
 260         config->AssignedIRQ = s->irq.AssignedIRQ;
 261         config->BasePort1 = c->io.BasePort1;
 262         config->NumPorts1 = c->io.NumPorts1;
 263         config->Attributes1 = c->io.Attributes1;
 264         config->BasePort2 = c->io.BasePort2;
 265         config->NumPorts2 = c->io.NumPorts2;
 266         config->Attributes2 = c->io.Attributes2;
 267         config->IOAddrLines = c->io.IOAddrLines;
 268
 269         return CS_SUCCESS;
 270 } /* pccard_get_configuration_info */
 271
 272 int pcmcia_get_configuration_info(client_handle_t handle,
 273                                   config_info_t *config)
 274 {
 275         struct pcmcia_socket *s;
 276
 277         if (!config)
 278                 return CS_BAD_HANDLE;
 279         s = SOCKET(handle);
 280         if (!s)
 281                 return CS_BAD_HANDLE;
 282         return pccard_get_configuration_info(s, handle->func, config);
 283 }
 284 EXPORT_SYMBOL(pcmcia_get_configuration_info);
 285
 286
 287 /** pcmcia_get_window
 288  */
 289 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
 290                       int idx, win_req_t *req)
 291 {
 292         window_t *win;
 293         int w;
 294
 295         if (!s || !(s->state & SOCKET_PRESENT))
 296                 return CS_NO_CARD;
 297         for (w = idx; w < MAX_WIN; w++)
 298                 if (s->state & SOCKET_WIN_REQ(w))
 299                         break;
 300         if (w == MAX_WIN)
 301                 return CS_NO_MORE_ITEMS;
 302         win = &s->win[w];
 303         req->Base = win->ctl.res->start;
 304         req->Size = win->ctl.res->end - win->ctl.res->start + 1;
 305         req->AccessSpeed = win->ctl.speed;
 306         req->Attributes = 0;
 307         if (win->ctl.flags & MAP_ATTRIB)
 308                 req->Attributes |= WIN_MEMORY_TYPE_AM;
 309         if (win->ctl.flags & MAP_ACTIVE)
 310                 req->Attributes |= WIN_ENABLE;
 311         if (win->ctl.flags & MAP_16BIT)
 312                 req->Attributes |= WIN_DATA_WIDTH_16;
 313         if (win->ctl.flags & MAP_USE_WAIT)
 314                 req->Attributes |= WIN_USE_WAIT;
 315         *handle = win;
 316         return CS_SUCCESS;
 317 } /* pcmcia_get_window */
 318 EXPORT_SYMBOL(pcmcia_get_window);
 319
 320
 321 /** pccard_get_status
 322  *
 323  * Get the current socket state bits.  We don't support the latched
 324  * SocketState yet: I haven't seen any point for it.
 325  */
 326
 327 int pccard_get_status(struct pcmcia_socket *s, unsigned int function,
 328                       cs_status_t *status)
 329 {
 330         config_t *c;
 331         int val;
 332
 333         s->ops->get_status(s, &val);
 334         status->CardState = status->SocketState = 0;
 335         status->CardState |= (val & SS_DETECT) ? CS_EVENT_CARD_DETECT : 0;
 336         status->CardState |= (val & SS_CARDBUS) ? CS_EVENT_CB_DETECT : 0;
 337         status->CardState |= (val & SS_3VCARD) ? CS_EVENT_3VCARD : 0;
 338         status->CardState |= (val & SS_XVCARD) ? CS_EVENT_XVCARD : 0;
 339         if (s->state & SOCKET_SUSPEND)
 340                 status->CardState |= CS_EVENT_PM_SUSPEND;
 341         if (!(s->state & SOCKET_PRESENT))
 342                 return CS_NO_CARD;
 343
 344         c = (s->config != NULL) ? &s->config[function] : NULL;
 345         if ((c != NULL) && (c->state & CONFIG_LOCKED) &&
 346             (c->IntType & (INT_MEMORY_AND_IO | INT_ZOOMED_VIDEO))) {
 347                 u_char reg;
 348                 if (c->Present & PRESENT_PIN_REPLACE) {
 349                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_PRR)>>1, 1, &reg);
 350                         status->CardState |=
 351                                 (reg & PRR_WP_STATUS) ? CS_EVENT_WRITE_PROTECT : 0;
 352                         status->CardState |=
 353                                 (reg & PRR_READY_STATUS) ? CS_EVENT_READY_CHANGE : 0;
 354                         status->CardState |=
 355                                 (reg & PRR_BVD2_STATUS) ? CS_EVENT_BATTERY_LOW : 0;
 356                         status->CardState |=
 357                                 (reg & PRR_BVD1_STATUS) ? CS_EVENT_BATTERY_DEAD : 0;
 358                 } else {
 359                         /* No PRR?  Then assume we're always ready */
 360                         status->CardState |= CS_EVENT_READY_CHANGE;
 361                 }
 362                 if (c->Present & PRESENT_EXT_STATUS) {
 363                         pcmcia_read_cis_mem(s, 1, (c->ConfigBase+CISREG_ESR)>>1, 1, &reg);
 364                         status->CardState |=
 365                                 (reg & ESR_REQ_ATTN) ? CS_EVENT_REQUEST_ATTENTION : 0;
 366                 }
 367                 return CS_SUCCESS;
 368         }
 369         status->CardState |=
 370                 (val & SS_WRPROT) ? CS_EVENT_WRITE_PROTECT : 0;
 371         status->CardState |=
 372                 (val & SS_BATDEAD) ? CS_EVENT_BATTERY_DEAD : 0;
 373         status->CardState |=
 374                 (val & SS_BATWARN) ? CS_EVENT_BATTERY_LOW : 0;
 375         status->CardState |=
 376                 (val & SS_READY) ? CS_EVENT_READY_CHANGE : 0;
 377         return CS_SUCCESS;
 378 } /* pccard_get_status */
 379
 380 int pcmcia_get_status(client_handle_t handle, cs_status_t *status)
 381 {
 382         struct pcmcia_socket *s;
 383         s = SOCKET(handle);
 384         return pccard_get_status(s, handle->func, status);
 385 }
 386 EXPORT_SYMBOL(pcmcia_get_status);
 387
 388
 389
 390 /** pcmcia_get_mem_page
 391  *
 392  * Change the card address of an already open memory window.
 393  */
 394 int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
 395 {
 396         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
 397                 return CS_BAD_HANDLE;
 398         req->Page = 0;
 399         req->CardOffset = win->ctl.card_start;
 400         return CS_SUCCESS;
 401 } /* pcmcia_get_mem_page */
 402 EXPORT_SYMBOL(pcmcia_get_mem_page);
 403
 404
 405 int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
 406 {
 407         struct pcmcia_socket *s;
 408         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
 409                 return CS_BAD_HANDLE;
 410         if (req->Page != 0)
 411                 return CS_BAD_PAGE;
 412         s = win->sock;
 413         win->ctl.card_start = req->CardOffset;
 414         if (s->ops->set_mem_map(s, &win->ctl) != 0)
 415                 return CS_BAD_OFFSET;
 416         return CS_SUCCESS;
 417 } /* pcmcia_map_mem_page */
 418 EXPORT_SYMBOL(pcmcia_map_mem_page);
 419
 420
 421 /** pcmcia_modify_configuration
 422  *
 423  * Modify a locked socket configuration
 424  */
 425 int pcmcia_modify_configuration(client_handle_t handle,
 426                                 modconf_t *mod)
 427 {
 428         struct pcmcia_socket *s;
 429         config_t *c;
 430
 431         s = SOCKET(handle);
 432         c = CONFIG(handle);
 433         if (!(s->state & SOCKET_PRESENT))
 434                 return CS_NO_CARD;
 435         if (!(c->state & CONFIG_LOCKED))
 436                 return CS_CONFIGURATION_LOCKED;
 437
 438         if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
 439                 if (mod->Attributes & CONF_ENABLE_IRQ) {
 440                         c->Attributes |= CONF_ENABLE_IRQ;
 441                         s->socket.io_irq = s->irq.AssignedIRQ;
 442                 } else {
 443                         c->Attributes &= ~CONF_ENABLE_IRQ;
 444                         s->socket.io_irq = 0;
 445                 }
 446                 s->ops->set_socket(s, &s->socket);
 447         }
 448
 449         if (mod->Attributes & CONF_VCC_CHANGE_VALID)
 450                 return CS_BAD_VCC;
 451
 452         /* We only allow changing Vpp1 and Vpp2 to the same value */
 453         if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
 454             (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
 455                 if (mod->Vpp1 != mod->Vpp2)
 456                         return CS_BAD_VPP;
 457                 c->Vpp1 = c->Vpp2 = s->socket.Vpp = mod->Vpp1;
 458                 if (s->ops->set_socket(s, &s->socket))
 459                         return CS_BAD_VPP;
 460         } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
 461                    (mod->Attributes & CONF_VPP2_CHANGE_VALID))
 462                 return CS_BAD_VPP;
 463
 464         return CS_SUCCESS;
 465 } /* modify_configuration */
 466 EXPORT_SYMBOL(pcmcia_modify_configuration);
 467
 468
 469 int pcmcia_release_configuration(client_handle_t handle)
 470 {
 471         pccard_io_map io = { 0, 0, 0, 0, 1 };
 472         struct pcmcia_socket *s;
 473         int i;
 474
 475         if (!(handle->state & CLIENT_CONFIG_LOCKED))
 476                 return CS_BAD_HANDLE;
 477         handle->state &= ~CLIENT_CONFIG_LOCKED;
 478         s = SOCKET(handle);
 479
 480 #ifdef CONFIG_CARDBUS
 481         if (handle->state & CLIENT_CARDBUS)
 482                 return CS_SUCCESS;
 483 #endif
 484
 485         if (!(handle->state & CLIENT_STALE)) {
 486                 config_t *c = CONFIG(handle);
 487                 if (--(s->lock_count) == 0) {
 488                         s->socket.flags = SS_OUTPUT_ENA;   /* Is this correct? */
 489                         s->socket.Vpp = 0;
 490                         s->socket.io_irq = 0;
 491                         s->ops->set_socket(s, &s->socket);
 492                 }
 493                 if (c->state & CONFIG_IO_REQ)
 494                         for (i = 0; i < MAX_IO_WIN; i++) {
 495                                 if (s->io[i].NumPorts == 0)
 496                                         continue;
 497                                 s->io[i].Config--;
 498                                 if (s->io[i].Config != 0)
 499                                         continue;
 500                                 io.map = i;
 501                                 s->ops->set_io_map(s, &io);
 502                         }
 503                 c->state &= ~CONFIG_LOCKED;
 504         }
 505
 506         return CS_SUCCESS;
 507 } /* pcmcia_release_configuration */
 508 EXPORT_SYMBOL(pcmcia_release_configuration);
 509
 510
 511 /** pcmcia_release_io
 512  *
 513  * Release_io() releases the I/O ranges allocated by a client.  This
 514  * may be invoked some time after a card ejection has already dumped
 515  * the actual socket configuration, so if the client is "stale", we
 516  * don't bother checking the port ranges against the current socket
 517  * values.
 518  */
 519 int pcmcia_release_io(client_handle_t handle, io_req_t *req)
 520 {
 521         struct pcmcia_socket *s;
 522
 523         if (!(handle->state & CLIENT_IO_REQ))
 524                 return CS_BAD_HANDLE;
 525         handle->state &= ~CLIENT_IO_REQ;
 526         s = SOCKET(handle);
 527
 528 #ifdef CONFIG_CARDBUS
 529         if (handle->state & CLIENT_CARDBUS)
 530                 return CS_SUCCESS;
 531 #endif
 532
 533         if (!(handle->state & CLIENT_STALE)) {
 534                 config_t *c = CONFIG(handle);
 535                 if (c->state & CONFIG_LOCKED)
 536                         return CS_CONFIGURATION_LOCKED;
 537                 if ((c->io.BasePort1 != req->BasePort1) ||
 538                     (c->io.NumPorts1 != req->NumPorts1) ||
 539                     (c->io.BasePort2 != req->BasePort2) ||
 540                     (c->io.NumPorts2 != req->NumPorts2))
 541                         return CS_BAD_ARGS;
 542                 c->state &= ~CONFIG_IO_REQ;
 543         }
 544
 545         release_io_space(s, req->BasePort1, req->NumPorts1);
 546         if (req->NumPorts2)
 547                 release_io_space(s, req->BasePort2, req->NumPorts2);
 548
 549         return CS_SUCCESS;
 550 } /* pcmcia_release_io */
 551 EXPORT_SYMBOL(pcmcia_release_io);
 552
 553
 554 int pcmcia_release_irq(client_handle_t handle, irq_req_t *req)
 555 {
 556         struct pcmcia_socket *s;
 557         if (!(handle->state & CLIENT_IRQ_REQ))
 558                 return CS_BAD_HANDLE;
 559         handle->state &= ~CLIENT_IRQ_REQ;
 560         s = SOCKET(handle);
 561
 562         if (!(handle->state & CLIENT_STALE)) {
 563                 config_t *c = CONFIG(handle);
 564                 if (c->state & CONFIG_LOCKED)
 565                         return CS_CONFIGURATION_LOCKED;
 566                 if (c->irq.Attributes != req->Attributes)
 567                         return CS_BAD_ATTRIBUTE;
 568                 if (s->irq.AssignedIRQ != req->AssignedIRQ)
 569                         return CS_BAD_IRQ;
 570                 if (--s->irq.Config == 0) {
 571                         c->state &= ~CONFIG_IRQ_REQ;
 572                         s->irq.AssignedIRQ = 0;
 573                 }
 574         }
 575
 576         if (req->Attributes & IRQ_HANDLE_PRESENT) {
 577                 free_irq(req->AssignedIRQ, req->Instance);
 578         }
 579
 580 #ifdef CONFIG_PCMCIA_PROBE
 581         pcmcia_used_irq[req->AssignedIRQ]--;
 582 #endif
 583
 584         return CS_SUCCESS;
 585 } /* pcmcia_release_irq */
 586 EXPORT_SYMBOL(pcmcia_release_irq);
 587
 588
 589 int pcmcia_release_window(window_handle_t win)
 590 {
 591         struct pcmcia_socket *s;
 592
 593         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
 594                 return CS_BAD_HANDLE;
 595         s = win->sock;
 596         if (!(win->handle->state & CLIENT_WIN_REQ(win->index)))
 597                 return CS_BAD_HANDLE;
 598
 599         /* Shut down memory window */
 600         win->ctl.flags &= ~MAP_ACTIVE;
 601         s->ops->set_mem_map(s, &win->ctl);
 602         s->state &= ~SOCKET_WIN_REQ(win->index);
 603
 604         /* Release system memory */
 605         if (win->ctl.res) {
 606                 release_resource(win->ctl.res);
 607                 kfree(win->ctl.res);
 608                 win->ctl.res = NULL;
 609         }
 610         win->handle->state &= ~CLIENT_WIN_REQ(win->index);
 611
 612         win->magic = 0;
 613
 614         return CS_SUCCESS;
 615 } /* pcmcia_release_window */
 616 EXPORT_SYMBOL(pcmcia_release_window);
 617
 618
 619 int pcmcia_request_configuration(client_handle_t handle,
 620                                  config_req_t *req)
 621 {
 622         int i;
 623         u_int base;
 624         struct pcmcia_socket *s;
 625         config_t *c;
 626         pccard_io_map iomap;
 627
 628         s = SOCKET(handle);
 629         if (!(s->state & SOCKET_PRESENT))
 630                 return CS_NO_CARD;
 631
 632 #ifdef CONFIG_CARDBUS
 633         if (handle->state & CLIENT_CARDBUS)
 634                 return CS_UNSUPPORTED_MODE;
 635 #endif
 636
 637         if (req->IntType & INT_CARDBUS)
 638                 return CS_UNSUPPORTED_MODE;
 639         c = CONFIG(handle);
 640         if (c->state & CONFIG_LOCKED)
 641                 return CS_CONFIGURATION_LOCKED;
 642
 643         /* Do power control.  We don't allow changes in Vcc. */
 644         if (s->socket.Vcc != req->Vcc)
 645                 return CS_BAD_VCC;
 646         if (req->Vpp1 != req->Vpp2)
 647                 return CS_BAD_VPP;
 648         s->socket.Vpp = req->Vpp1;
 649         if (s->ops->set_socket(s, &s->socket))
 650                 return CS_BAD_VPP;
 651
 652         c->Vcc = req->Vcc; c->Vpp1 = c->Vpp2 = req->Vpp1;
 653
 654         /* Pick memory or I/O card, DMA mode, interrupt */
 655         c->IntType = req->IntType;
 656         c->Attributes = req->Attributes;
 657         if (req->IntType & INT_MEMORY_AND_IO)
 658                 s->socket.flags |= SS_IOCARD;
 659         if (req->IntType & INT_ZOOMED_VIDEO)
 660                 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
 661         if (req->Attributes & CONF_ENABLE_DMA)
 662                 s->socket.flags |= SS_DMA_MODE;
 663         if (req->Attributes & CONF_ENABLE_SPKR)
 664                 s->socket.flags |= SS_SPKR_ENA;
 665         if (req->Attributes & CONF_ENABLE_IRQ)
 666                 s->socket.io_irq = s->irq.AssignedIRQ;
 667         else
 668                 s->socket.io_irq = 0;
 669         s->ops->set_socket(s, &s->socket);
 670         s->lock_count++;
 671
 672         /* Set up CIS configuration registers */
 673         base = c->ConfigBase = req->ConfigBase;
 674         c->Present = c->CardValues = req->Present;
 675         if (req->Present & PRESENT_COPY) {
 676                 c->Copy = req->Copy;
 677                 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
 678         }
 679         if (req->Present & PRESENT_OPTION) {
 680                 if (s->functions == 1) {
 681                         c->Option = req->ConfigIndex & COR_CONFIG_MASK;
 682                 } else {
 683                         c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
 684                         c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
 685                         if (req->Present & PRESENT_IOBASE_0)
 686                                 c->Option |= COR_ADDR_DECODE;
 687                 }
 688                 if (c->state & CONFIG_IRQ_REQ)
 689                         if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
 690                                 c->Option |= COR_LEVEL_REQ;
 691                 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
 692                 mdelay(40);
 693         }
 694         if (req->Present & PRESENT_STATUS) {
 695                 c->Status = req->Status;
 696                 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
 697         }
 698         if (req->Present & PRESENT_PIN_REPLACE) {
 699                 c->Pin = req->Pin;
 700                 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
 701         }
 702         if (req->Present & PRESENT_EXT_STATUS) {
 703                 c->ExtStatus = req->ExtStatus;
 704                 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
 705         }
 706         if (req->Present & PRESENT_IOBASE_0) {
 707                 u_char b = c->io.BasePort1 & 0xff;
 708                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
 709                 b = (c->io.BasePort1 >> 8) & 0xff;
 710                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
 711         }
 712         if (req->Present & PRESENT_IOSIZE) {
 713                 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
 714                 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
 715         }
 716
 717         /* Configure I/O windows */
 718         if (c->state & CONFIG_IO_REQ) {
 719                 iomap.speed = io_speed;
 720                 for (i = 0; i < MAX_IO_WIN; i++)
 721                         if (s->io[i].NumPorts != 0) {
 722                                 iomap.map = i;
 723                                 iomap.flags = MAP_ACTIVE;
 724                                 switch (s->io[i].Attributes & IO_DATA_PATH_WIDTH) {
 725                                 case IO_DATA_PATH_WIDTH_16:
 726                                         iomap.flags |= MAP_16BIT; break;
 727                                 case IO_DATA_PATH_WIDTH_AUTO:
 728                                         iomap.flags |= MAP_AUTOSZ; break;
 729                                 default:
 730                                         break;
 731                                 }
 732                                 iomap.start = s->io[i].BasePort;
 733                                 iomap.stop = iomap.start + s->io[i].NumPorts - 1;
 734                                 s->ops->set_io_map(s, &iomap);
 735                                 s->io[i].Config++;
 736                         }
 737         }
 738
 739         c->state |= CONFIG_LOCKED;
 740         handle->state |= CLIENT_CONFIG_LOCKED;
 741         return CS_SUCCESS;
 742 } /* pcmcia_request_configuration */
 743 EXPORT_SYMBOL(pcmcia_request_configuration);
 744
 745
 746 /** pcmcia_request_io
 747  *
 748  * Request_io() reserves ranges of port addresses for a socket.
 749  * I have not implemented range sharing or alias addressing.
 750  */
 751 int pcmcia_request_io(client_handle_t handle, io_req_t *req)
 752 {
 753         struct pcmcia_socket *s;
 754         config_t *c;
 755
 756         s = SOCKET(handle);
 757         if (!(s->state & SOCKET_PRESENT))
 758                 return CS_NO_CARD;
 759
 760         if (handle->state & CLIENT_CARDBUS) {
 761 #ifdef CONFIG_CARDBUS
 762                 handle->state |= CLIENT_IO_REQ;
 763                 return CS_SUCCESS;
 764 #else
 765                 return CS_UNSUPPORTED_FUNCTION;
 766 #endif
 767         }
 768
 769         if (!req)
 770                 return CS_UNSUPPORTED_MODE;
 771         c = CONFIG(handle);
 772         if (c->state & CONFIG_LOCKED)
 773                 return CS_CONFIGURATION_LOCKED;
 774         if (c->state & CONFIG_IO_REQ)
 775                 return CS_IN_USE;
 776         if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
 777                 return CS_BAD_ATTRIBUTE;
 778         if ((req->NumPorts2 > 0) &&
 779             (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
 780                 return CS_BAD_ATTRIBUTE;
 781
 782         if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
 783                            req->NumPorts1, req->IOAddrLines))
 784                 return CS_IN_USE;
 785
 786         if (req->NumPorts2) {
 787                 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
 788                                    req->NumPorts2, req->IOAddrLines)) {
 789                         release_io_space(s, req->BasePort1, req->NumPorts1);
 790                         return CS_IN_USE;
 791                 }
 792         }
 793
 794         c->io = *req;
 795         c->state |= CONFIG_IO_REQ;
 796         handle->state |= CLIENT_IO_REQ;
 797         return CS_SUCCESS;
 798 } /* pcmcia_request_io */
 799 EXPORT_SYMBOL(pcmcia_request_io);
 800
 801
 802 /** pcmcia_request_irq
 803  *
 804  * Request_irq() reserves an irq for this client.
 805  *
 806  * Also, since Linux only reserves irq's when they are actually
 807  * hooked, we don't guarantee that an irq will still be available
 808  * when the configuration is locked.  Now that I think about it,
 809  * there might be a way to fix this using a dummy handler.
 810  */
 811
 812 #ifdef CONFIG_PCMCIA_PROBE
 813 static irqreturn_t test_action(int cpl, void *dev_id, struct pt_regs *regs)
 814 {
 815         return IRQ_NONE;
 816 }
 817 #endif
 818
 819 int pcmcia_request_irq(client_handle_t handle, irq_req_t *req)
 820 {
 821         struct pcmcia_socket *s;
 822         config_t *c;
 823         int ret = CS_IN_USE, irq = 0;
 824         struct pcmcia_device *p_dev = handle_to_pdev(handle);
 825
 826         s = SOCKET(handle);
 827         if (!(s->state & SOCKET_PRESENT))
 828                 return CS_NO_CARD;
 829         c = CONFIG(handle);
 830         if (c->state & CONFIG_LOCKED)
 831                 return CS_CONFIGURATION_LOCKED;
 832         if (c->state & CONFIG_IRQ_REQ)
 833                 return CS_IN_USE;
 834
 835 #ifdef CONFIG_PCMCIA_PROBE
 836         if (s->irq.AssignedIRQ != 0) {
 837                 /* If the interrupt is already assigned, it must be the same */
 838                 irq = s->irq.AssignedIRQ;
 839         } else {
 840                 int try;
 841                 u32 mask = s->irq_mask;
 842                 void *data = NULL;
 843
 844                 for (try = 0; try < 64; try++) {
 845                         irq = try % 32;
 846
 847                         /* marked as available by driver, and not blocked by userspace? */
 848                         if (!((mask >> irq) & 1))
 849                                 continue;
 850
 851                         /* avoid an IRQ which is already used by a PCMCIA card */
 852                         if ((try < 32) && pcmcia_used_irq[irq])
 853                                 continue;
 854
 855                         /* register the correct driver, if possible, of check whether
 856                          * registering a dummy handle works, i.e. if the IRQ isn't
 857                          * marked as used by the kernel resource management core */
 858                         ret = request_irq(irq,
 859                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
 860                                           ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
 861                                            (s->functions > 1) ||
 862                                            (irq == s->pci_irq)) ? SA_SHIRQ : 0,
 863                                           p_dev->dev.bus_id,
 864                                           (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
 865                         if (!ret) {
 866                                 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
 867                                         free_irq(irq, data);
 868                                 break;
 869                         }
 870                 }
 871         }
 872 #endif
 873         if (ret) {
 874                 if (!s->pci_irq)
 875                         return ret;
 876                 irq = s->pci_irq;
 877         }
 878
 879         if (ret && req->Attributes & IRQ_HANDLE_PRESENT) {
 880                 if (request_irq(irq, req->Handler,
 881                                 ((req->Attributes & IRQ_TYPE_DYNAMIC_SHARING) ||
 882                                  (s->functions > 1) ||
 883                                  (irq == s->pci_irq)) ? SA_SHIRQ : 0,
 884                                 p_dev->dev.bus_id, req->Instance))
 885                         return CS_IN_USE;
 886         }
 887
 888         c->irq.Attributes = req->Attributes;
 889         s->irq.AssignedIRQ = req->AssignedIRQ = irq;
 890         s->irq.Config++;
 891
 892         c->state |= CONFIG_IRQ_REQ;
 893         handle->state |= CLIENT_IRQ_REQ;
 894
 895 #ifdef CONFIG_PCMCIA_PROBE
 896         pcmcia_used_irq[irq]++;
 897 #endif
 898
 899         return CS_SUCCESS;
 900 } /* pcmcia_request_irq */
 901 EXPORT_SYMBOL(pcmcia_request_irq);
 902
 903
 904 /** pcmcia_request_window
 905  *
 906  * Request_window() establishes a mapping between card memory space
 907  * and system memory space.
 908  */
 909 int pcmcia_request_window(client_handle_t *handle, win_req_t *req, window_handle_t *wh)
 910 {
 911         struct pcmcia_socket *s;
 912         window_t *win;
 913         u_long align;
 914         int w;
 915
 916         s = (*handle)->socket;
 917         if (!(s->state & SOCKET_PRESENT))
 918                 return CS_NO_CARD;
 919         if (req->Attributes & (WIN_PAGED | WIN_SHARED))
 920                 return CS_BAD_ATTRIBUTE;
 921
 922         /* Window size defaults to smallest available */
 923         if (req->Size == 0)
 924                 req->Size = s->map_size;
 925         align = (((s->features & SS_CAP_MEM_ALIGN) ||
 926                   (req->Attributes & WIN_STRICT_ALIGN)) ?
 927                  req->Size : s->map_size);
 928         if (req->Size & (s->map_size-1))
 929                 return CS_BAD_SIZE;
 930         if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
 931             (req->Base & (align-1)))
 932                 return CS_BAD_BASE;
 933         if (req->Base)
 934                 align = 0;
 935
 936         /* Allocate system memory window */
 937         for (w = 0; w < MAX_WIN; w++)
 938                 if (!(s->state & SOCKET_WIN_REQ(w))) break;
 939         if (w == MAX_WIN)
 940                 return CS_OUT_OF_RESOURCE;
 941
 942         win = &s->win[w];
 943         win->magic = WINDOW_MAGIC;
 944         win->index = w;
 945         win->handle = *handle;
 946         win->sock = s;
 947
 948         if (!(s->features & SS_CAP_STATIC_MAP)) {
 949                 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
 950                                                       (req->Attributes & WIN_MAP_BELOW_1MB), s);
 951                 if (!win->ctl.res)
 952                         return CS_IN_USE;
 953         }
 954         (*handle)->state |= CLIENT_WIN_REQ(w);
 955
 956         /* Configure the socket controller */
 957         win->ctl.map = w+1;
 958         win->ctl.flags = 0;
 959         win->ctl.speed = req->AccessSpeed;
 960         if (req->Attributes & WIN_MEMORY_TYPE)
 961                 win->ctl.flags |= MAP_ATTRIB;
 962         if (req->Attributes & WIN_ENABLE)
 963                 win->ctl.flags |= MAP_ACTIVE;
 964         if (req->Attributes & WIN_DATA_WIDTH_16)
 965                 win->ctl.flags |= MAP_16BIT;
 966         if (req->Attributes & WIN_USE_WAIT)
 967                 win->ctl.flags |= MAP_USE_WAIT;
 968         win->ctl.card_start = 0;
 969         if (s->ops->set_mem_map(s, &win->ctl) != 0)
 970                 return CS_BAD_ARGS;
 971         s->state |= SOCKET_WIN_REQ(w);
 972
 973         /* Return window handle */
 974         if (s->features & SS_CAP_STATIC_MAP) {
 975                 req->Base = win->ctl.static_start;
 976         } else {
 977                 req->Base = win->ctl.res->start;
 978         }
 979         *wh = win;
 980
 981         return CS_SUCCESS;
 982 } /* pcmcia_request_window */
 983 EXPORT_SYMBOL(pcmcia_request_window);