drivers/net/wireless/spectrum_cs.c

   1 /*
   2  * Driver for 802.11b cards using RAM-loadable Symbol firmware, such as
   3  * Symbol Wireless Networker LA4100, CompactFlash cards by Socket
   4  * Communications and Intel PRO/Wireless 2011B.
   5  *
   6  * The driver implements Symbol firmware download.  The rest is handled
   7  * in hermes.c and orinoco.c.
   8  *
   9  * Utilities for downloading the Symbol firmware are available at
  10  * http://sourceforge.net/projects/orinoco/
  11  *
  12  * Copyright (C) 2002-2005 Pavel Roskin <proski@gnu.org>
  13  * Portions based on orinoco_cs.c:
  14  *      Copyright (C) David Gibson, Linuxcare Australia
  15  * Portions based on Spectrum24tDnld.c from original spectrum24 driver:
  16  *      Copyright (C) Symbol Technologies.
  17  *
  18  * See copyright notice in file orinoco.c.
  19  */
  20
  21 #define DRIVER_NAME "spectrum_cs"
  22 #define PFX DRIVER_NAME ": "
  23
  24 #include <linux/config.h>
  25 #include <linux/module.h>
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/delay.h>
  29 #include <linux/firmware.h>
  30 #include <pcmcia/cs_types.h>
  31 #include <pcmcia/cs.h>
  32 #include <pcmcia/cistpl.h>
  33 #include <pcmcia/cisreg.h>
  34 #include <pcmcia/ds.h>
  35
  36 #include "orinoco.h"
  37
  38 static unsigned char *primsym;
  39 static unsigned char *secsym;
  40 static const char primary_fw_name[] = "symbol_sp24t_prim_fw";
  41 static const char secondary_fw_name[] = "symbol_sp24t_sec_fw";
  42
  43 /********************************************************************/
  44 /* Module stuff                                                     */
  45 /********************************************************************/
  46
  47 MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
  48 MODULE_DESCRIPTION("Driver for Symbol Spectrum24 Trilogy cards with firmware downloader");
  49 MODULE_LICENSE("Dual MPL/GPL");
  50
  51 /* Module parameters */
  52
  53 /* Some D-Link cards have buggy CIS. They do work at 5v properly, but
  54  * don't have any CIS entry for it. This workaround it... */
  55 static int ignore_cis_vcc; /* = 0 */
  56 module_param(ignore_cis_vcc, int, 0);
  57 MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket");
  58
  59 /********************************************************************/
  60 /* Data structures                                                  */
  61 /********************************************************************/
  62
  63 /* PCMCIA specific device information (goes in the card field of
  64  * struct orinoco_private */
  65 struct orinoco_pccard {
  66         struct pcmcia_device    *p_dev;
  67         dev_node_t node;
  68 };
  69
  70 /********************************************************************/
  71 /* Function prototypes                                              */
  72 /********************************************************************/
  73
  74 static int spectrum_cs_config(struct pcmcia_device *link);
  75 static void spectrum_cs_release(struct pcmcia_device *link);
  76
  77 /********************************************************************/
  78 /* Firmware downloader                                              */
  79 /********************************************************************/
  80
  81 /* Position of PDA in the adapter memory */
  82 #define EEPROM_ADDR     0x3000
  83 #define EEPROM_LEN      0x200
  84 #define PDA_OFFSET      0x100
  85
  86 #define PDA_ADDR        (EEPROM_ADDR + PDA_OFFSET)
  87 #define PDA_WORDS       ((EEPROM_LEN - PDA_OFFSET) / 2)
  88
  89 /* Constants for the CISREG_CCSR register */
  90 #define HCR_RUN         0x07    /* run firmware after reset */
  91 #define HCR_IDLE        0x0E    /* don't run firmware after reset */
  92 #define HCR_MEM16       0x10    /* memory width bit, should be preserved */
  93
  94 /*
  95  * AUX port access.  To unlock the AUX port write the access keys to the
  96  * PARAM0-2 registers, then write HERMES_AUX_ENABLE to the HERMES_CONTROL
  97  * register.  Then read it and make sure it's HERMES_AUX_ENABLED.
  98  */
  99 #define HERMES_AUX_ENABLE       0x8000  /* Enable auxiliary port access */
 100 #define HERMES_AUX_DISABLE      0x4000  /* Disable to auxiliary port access */
 101 #define HERMES_AUX_ENABLED      0xC000  /* Auxiliary port is open */
 102
 103 #define HERMES_AUX_PW0  0xFE01
 104 #define HERMES_AUX_PW1  0xDC23
 105 #define HERMES_AUX_PW2  0xBA45
 106
 107 /* End markers */
 108 #define PDI_END         0x00000000      /* End of PDA */
 109 #define BLOCK_END       0xFFFFFFFF      /* Last image block */
 110 #define TEXT_END        0x1A            /* End of text header */
 111
 112 /*
 113  * The following structures have little-endian fields denoted by
 114  * the leading underscore.  Don't access them directly - use inline
 115  * functions defined below.
 116  */
 117
 118 /*
 119  * The binary image to be downloaded consists of series of data blocks.
 120  * Each block has the following structure.
 121  */
 122 struct dblock {
 123         __le32 _addr;           /* adapter address where to write the block */
 124         __le16 _len;            /* length of the data only, in bytes */
 125         char data[0];           /* data to be written */
 126 } __attribute__ ((packed));
 127
 128 /*
 129  * Plug Data References are located in in the image after the last data
 130  * block.  They refer to areas in the adapter memory where the plug data
 131  * items with matching ID should be written.
 132  */
 133 struct pdr {
 134         __le32 _id;             /* record ID */
 135         __le32 _addr;           /* adapter address where to write the data */
 136         __le32 _len;            /* expected length of the data, in bytes */
 137         char next[0];           /* next PDR starts here */
 138 } __attribute__ ((packed));
 139
 140
 141 /*
 142  * Plug Data Items are located in the EEPROM read from the adapter by
 143  * primary firmware.  They refer to the device-specific data that should
 144  * be plugged into the secondary firmware.
 145  */
 146 struct pdi {
 147         __le16 _len;            /* length of ID and data, in words */
 148         __le16 _id;             /* record ID */
 149         char data[0];           /* plug data */
 150 } __attribute__ ((packed));
 151
 152
 153 /* Functions for access to little-endian data */
 154 static inline u32
 155 dblock_addr(const struct dblock *blk)
 156 {
 157         return le32_to_cpu(blk->_addr);
 158 }
 159
 160 static inline u32
 161 dblock_len(const struct dblock *blk)
 162 {
 163         return le16_to_cpu(blk->_len);
 164 }
 165
 166 static inline u32
 167 pdr_id(const struct pdr *pdr)
 168 {
 169         return le32_to_cpu(pdr->_id);
 170 }
 171
 172 static inline u32
 173 pdr_addr(const struct pdr *pdr)
 174 {
 175         return le32_to_cpu(pdr->_addr);
 176 }
 177
 178 static inline u32
 179 pdr_len(const struct pdr *pdr)
 180 {
 181         return le32_to_cpu(pdr->_len);
 182 }
 183
 184 static inline u32
 185 pdi_id(const struct pdi *pdi)
 186 {
 187         return le16_to_cpu(pdi->_id);
 188 }
 189
 190 /* Return length of the data only, in bytes */
 191 static inline u32
 192 pdi_len(const struct pdi *pdi)
 193 {
 194         return 2 * (le16_to_cpu(pdi->_len) - 1);
 195 }
 196
 197
 198 /* Set address of the auxiliary port */
 199 static inline void
 200 spectrum_aux_setaddr(hermes_t *hw, u32 addr)
 201 {
 202         hermes_write_reg(hw, HERMES_AUXPAGE, (u16) (addr >> 7));
 203         hermes_write_reg(hw, HERMES_AUXOFFSET, (u16) (addr & 0x7F));
 204 }
 205
 206
 207 /* Open access to the auxiliary port */
 208 static int
 209 spectrum_aux_open(hermes_t *hw)
 210 {
 211         int i;
 212
 213         /* Already open? */
 214         if (hermes_read_reg(hw, HERMES_CONTROL) == HERMES_AUX_ENABLED)
 215                 return 0;
 216
 217         hermes_write_reg(hw, HERMES_PARAM0, HERMES_AUX_PW0);
 218         hermes_write_reg(hw, HERMES_PARAM1, HERMES_AUX_PW1);
 219         hermes_write_reg(hw, HERMES_PARAM2, HERMES_AUX_PW2);
 220         hermes_write_reg(hw, HERMES_CONTROL, HERMES_AUX_ENABLE);
 221
 222         for (i = 0; i < 20; i++) {
 223                 udelay(10);
 224                 if (hermes_read_reg(hw, HERMES_CONTROL) ==
 225                     HERMES_AUX_ENABLED)
 226                         return 0;
 227         }
 228
 229         return -EBUSY;
 230 }
 231
 232
 233 #define CS_CHECK(fn, ret) \
 234   do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 235
 236 /*
 237  * Reset the card using configuration registers COR and CCSR.
 238  * If IDLE is 1, stop the firmware, so that it can be safely rewritten.
 239  */
 240 static int
 241 spectrum_reset(struct pcmcia_device *link, int idle)
 242 {
 243         int last_ret, last_fn;
 244         conf_reg_t reg;
 245         u_int save_cor;
 246
 247         /* Doing it if hardware is gone is guaranteed crash */
 248         if (pcmcia_dev_present(link))
 249                 return -ENODEV;
 250
 251         /* Save original COR value */
 252         reg.Function = 0;
 253         reg.Action = CS_READ;
 254         reg.Offset = CISREG_COR;
 255         CS_CHECK(AccessConfigurationRegister,
 256                  pcmcia_access_configuration_register(link, &reg));
 257         save_cor = reg.Value;
 258
 259         /* Soft-Reset card */
 260         reg.Action = CS_WRITE;
 261         reg.Offset = CISREG_COR;
 262         reg.Value = (save_cor | COR_SOFT_RESET);
 263         CS_CHECK(AccessConfigurationRegister,
 264                  pcmcia_access_configuration_register(link, &reg));
 265         udelay(1000);
 266
 267         /* Read CCSR */
 268         reg.Action = CS_READ;
 269         reg.Offset = CISREG_CCSR;
 270         CS_CHECK(AccessConfigurationRegister,
 271                  pcmcia_access_configuration_register(link, &reg));
 272
 273         /*
 274          * Start or stop the firmware.  Memory width bit should be
 275          * preserved from the value we've just read.
 276          */
 277         reg.Action = CS_WRITE;
 278         reg.Offset = CISREG_CCSR;
 279         reg.Value = (idle ? HCR_IDLE : HCR_RUN) | (reg.Value & HCR_MEM16);
 280         CS_CHECK(AccessConfigurationRegister,
 281                  pcmcia_access_configuration_register(link, &reg));
 282         udelay(1000);
 283
 284         /* Restore original COR configuration index */
 285         reg.Action = CS_WRITE;
 286         reg.Offset = CISREG_COR;
 287         reg.Value = (save_cor & ~COR_SOFT_RESET);
 288         CS_CHECK(AccessConfigurationRegister,
 289                  pcmcia_access_configuration_register(link, &reg));
 290         udelay(1000);
 291         return 0;
 292
 293       cs_failed:
 294         cs_error(link, last_fn, last_ret);
 295         return -ENODEV;
 296 }
 297
 298
 299 /*
 300  * Scan PDR for the record with the specified RECORD_ID.
 301  * If it's not found, return NULL.
 302  */
 303 static struct pdr *
 304 spectrum_find_pdr(struct pdr *first_pdr, u32 record_id)
 305 {
 306         struct pdr *pdr = first_pdr;
 307
 308         while (pdr_id(pdr) != PDI_END) {
 309                 /*
 310                  * PDR area is currently not terminated by PDI_END.
 311                  * It's followed by CRC records, which have the type
 312                  * field where PDR has length.  The type can be 0 or 1.
 313                  */
 314                 if (pdr_len(pdr) < 2)
 315                         return NULL;
 316
 317                 /* If the record ID matches, we are done */
 318                 if (pdr_id(pdr) == record_id)
 319                         return pdr;
 320
 321                 pdr = (struct pdr *) pdr->next;
 322         }
 323         return NULL;
 324 }
 325
 326
 327 /* Process one Plug Data Item - find corresponding PDR and plug it */
 328 static int
 329 spectrum_plug_pdi(hermes_t *hw, struct pdr *first_pdr, struct pdi *pdi)
 330 {
 331         struct pdr *pdr;
 332
 333         /* Find the PDI corresponding to this PDR */
 334         pdr = spectrum_find_pdr(first_pdr, pdi_id(pdi));
 335
 336         /* No match is found, safe to ignore */
 337         if (!pdr)
 338                 return 0;
 339
 340         /* Lengths of the data in PDI and PDR must match */
 341         if (pdi_len(pdi) != pdr_len(pdr))
 342                 return -EINVAL;
 343
 344         /* do the actual plugging */
 345         spectrum_aux_setaddr(hw, pdr_addr(pdr));
 346         hermes_write_words(hw, HERMES_AUXDATA, pdi->data,
 347                            pdi_len(pdi) / 2);
 348
 349         return 0;
 350 }
 351
 352
 353 /* Read PDA from the adapter */
 354 static int
 355 spectrum_read_pda(hermes_t *hw, __le16 *pda, int pda_len)
 356 {
 357         int ret;
 358         int pda_size;
 359
 360         /* Issue command to read EEPROM */
 361         ret = hermes_docmd_wait(hw, HERMES_CMD_READMIF, 0, NULL);
 362         if (ret)
 363                 return ret;
 364
 365         /* Open auxiliary port */
 366         ret = spectrum_aux_open(hw);
 367         if (ret)
 368                 return ret;
 369
 370         /* read PDA from EEPROM */
 371         spectrum_aux_setaddr(hw, PDA_ADDR);
 372         hermes_read_words(hw, HERMES_AUXDATA, pda, pda_len / 2);
 373
 374         /* Check PDA length */
 375         pda_size = le16_to_cpu(pda[0]);
 376         if (pda_size > pda_len)
 377                 return -EINVAL;
 378
 379         return 0;
 380 }
 381
 382
 383 /* Parse PDA and write the records into the adapter */
 384 static int
 385 spectrum_apply_pda(hermes_t *hw, const struct dblock *first_block,
 386                    __le16 *pda)
 387 {
 388         int ret;
 389         struct pdi *pdi;
 390         struct pdr *first_pdr;
 391         const struct dblock *blk = first_block;
 392
 393         /* Skip all blocks to locate Plug Data References */
 394         while (dblock_addr(blk) != BLOCK_END)
 395                 blk = (struct dblock *) &blk->data[dblock_len(blk)];
 396
 397         first_pdr = (struct pdr *) blk;
 398
 399         /* Go through every PDI and plug them into the adapter */
 400         pdi = (struct pdi *) (pda + 2);
 401         while (pdi_id(pdi) != PDI_END) {
 402                 ret = spectrum_plug_pdi(hw, first_pdr, pdi);
 403                 if (ret)
 404                         return ret;
 405
 406                 /* Increment to the next PDI */
 407                 pdi = (struct pdi *) &pdi->data[pdi_len(pdi)];
 408         }
 409         return 0;
 410 }
 411
 412
 413 /* Load firmware blocks into the adapter */
 414 static int
 415 spectrum_load_blocks(hermes_t *hw, const struct dblock *first_block)
 416 {
 417         const struct dblock *blk;
 418         u32 blkaddr;
 419         u32 blklen;
 420
 421         blk = first_block;
 422         blkaddr = dblock_addr(blk);
 423         blklen = dblock_len(blk);
 424
 425         while (dblock_addr(blk) != BLOCK_END) {
 426                 spectrum_aux_setaddr(hw, blkaddr);
 427                 hermes_write_words(hw, HERMES_AUXDATA, blk->data,
 428                                    blklen / 2);
 429
 430                 blk = (struct dblock *) &blk->data[blklen];
 431                 blkaddr = dblock_addr(blk);
 432                 blklen = dblock_len(blk);
 433         }
 434         return 0;
 435 }
 436
 437
 438 /*
 439  * Process a firmware image - stop the card, load the firmware, reset
 440  * the card and make sure it responds.  For the secondary firmware take
 441  * care of the PDA - read it and then write it on top of the firmware.
 442  */
 443 static int
 444 spectrum_dl_image(hermes_t *hw, struct pcmcia_device *link,
 445                   const unsigned char *image)
 446 {
 447         int ret;
 448         const unsigned char *ptr;
 449         const struct dblock *first_block;
 450
 451         /* Plug Data Area (PDA) */
 452         __le16 pda[PDA_WORDS];
 453
 454         /* Binary block begins after the 0x1A marker */
 455         ptr = image;
 456         while (*ptr++ != TEXT_END);
 457         first_block = (const struct dblock *) ptr;
 458
 459         /* Read the PDA */
 460         if (image != primsym) {
 461                 ret = spectrum_read_pda(hw, pda, sizeof(pda));
 462                 if (ret)
 463                         return ret;
 464         }
 465
 466         /* Stop the firmware, so that it can be safely rewritten */
 467         ret = spectrum_reset(link, 1);
 468         if (ret)
 469                 return ret;
 470
 471         /* Program the adapter with new firmware */
 472         ret = spectrum_load_blocks(hw, first_block);
 473         if (ret)
 474                 return ret;
 475
 476         /* Write the PDA to the adapter */
 477         if (image != primsym) {
 478                 ret = spectrum_apply_pda(hw, first_block, pda);
 479                 if (ret)
 480                         return ret;
 481         }
 482
 483         /* Run the firmware */
 484         ret = spectrum_reset(link, 0);
 485         if (ret)
 486                 return ret;
 487
 488         /* Reset hermes chip and make sure it responds */
 489         ret = hermes_init(hw);
 490
 491         /* hermes_reset() should return 0 with the secondary firmware */
 492         if (image != primsym && ret != 0)
 493                 return -ENODEV;
 494
 495         /* And this should work with any firmware */
 496         if (!hermes_present(hw))
 497                 return -ENODEV;
 498
 499         return 0;
 500 }
 501
 502
 503 /*
 504  * Download the firmware into the card, this also does a PCMCIA soft
 505  * reset on the card, to make sure it's in a sane state.
 506  */
 507 static int
 508 spectrum_dl_firmware(hermes_t *hw, struct pcmcia_device *link)
 509 {
 510         int ret;
 511         const struct firmware *fw_entry;
 512
 513         if (request_firmware(&fw_entry, primary_fw_name,
 514                              &handle_to_dev(link)) == 0) {
 515                 primsym = fw_entry->data;
 516         } else {
 517                 printk(KERN_ERR PFX "Cannot find firmware: %s\n",
 518                        primary_fw_name);
 519                 return -ENOENT;
 520         }
 521
 522         if (request_firmware(&fw_entry, secondary_fw_name,
 523                              &handle_to_dev(link)) == 0) {
 524                 secsym = fw_entry->data;
 525         } else {
 526                 printk(KERN_ERR PFX "Cannot find firmware: %s\n",
 527                        secondary_fw_name);
 528                 return -ENOENT;
 529         }
 530
 531         /* Load primary firmware */
 532         ret = spectrum_dl_image(hw, link, primsym);
 533         if (ret) {
 534                 printk(KERN_ERR PFX "Primary firmware download failed\n");
 535                 return ret;
 536         }
 537
 538         /* Load secondary firmware */
 539         ret = spectrum_dl_image(hw, link, secsym);
 540
 541         if (ret) {
 542                 printk(KERN_ERR PFX "Secondary firmware download failed\n");
 543         }
 544
 545         return ret;
 546 }
 547
 548 /********************************************************************/
 549 /* Device methods                                                   */
 550 /********************************************************************/
 551
 552 static int
 553 spectrum_cs_hard_reset(struct orinoco_private *priv)
 554 {
 555         struct orinoco_pccard *card = priv->card;
 556         struct pcmcia_device *link = card->p_dev;
 557         int err;
 558
 559         if (!hermes_present(&priv->hw)) {
 560                 /* The firmware needs to be reloaded */
 561                 if (spectrum_dl_firmware(&priv->hw, link) != 0) {
 562                         printk(KERN_ERR PFX "Firmware download failed\n");
 563                         err = -ENODEV;
 564                 }
 565         } else {
 566                 /* Soft reset using COR and HCR */
 567                 spectrum_reset(link, 0);
 568         }
 569
 570         return 0;
 571 }
 572
 573 /********************************************************************/
 574 /* PCMCIA stuff                                                     */
 575 /********************************************************************/
 576
 577 /*
 578  * This creates an "instance" of the driver, allocating local data
 579  * structures for one device.  The device is registered with Card
 580  * Services.
 581  *
 582  * The dev_link structure is initialized, but we don't actually
 583  * configure the card at this point -- we wait until we receive a card
 584  * insertion event.  */
 585 static int
 586 spectrum_cs_probe(struct pcmcia_device *link)
 587 {
 588         struct net_device *dev;
 589         struct orinoco_private *priv;
 590         struct orinoco_pccard *card;
 591
 592         dev = alloc_orinocodev(sizeof(*card), spectrum_cs_hard_reset);
 593         if (! dev)
 594                 return -ENOMEM;
 595         priv = netdev_priv(dev);
 596         card = priv->card;
 597
 598         /* Link both structures together */
 599         card->p_dev = link;
 600         link->priv = dev;
 601
 602         /* Interrupt setup */
 603         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 604         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
 605         link->irq.Handler = orinoco_interrupt;
 606         link->irq.Instance = dev;
 607
 608         /* General socket configuration defaults can go here.  In this
 609          * client, we assume very little, and rely on the CIS for
 610          * almost everything.  In most clients, many details (i.e.,
 611          * number, sizes, and attributes of IO windows) are fixed by
 612          * the nature of the device, and can be hard-wired here. */
 613         link->conf.Attributes = 0;
 614         link->conf.IntType = INT_MEMORY_AND_IO;
 615
 616         return spectrum_cs_config(link);
 617 }                               /* spectrum_cs_attach */
 618
 619 /*
 620  * This deletes a driver "instance".  The device is de-registered with
 621  * Card Services.  If it has been released, all local data structures
 622  * are freed.  Otherwise, the structures will be freed when the device
 623  * is released.
 624  */
 625 static void spectrum_cs_detach(struct pcmcia_device *link)
 626 {
 627         struct net_device *dev = link->priv;
 628
 629         spectrum_cs_release(link);
 630
 631         DEBUG(0, PFX "detach: link=%p link->dev_node=%p\n", link, link->dev_node);
 632         if (link->dev_node) {
 633                 DEBUG(0, PFX "About to unregister net device %p\n",
 634                       dev);
 635                 unregister_netdev(dev);
 636         }
 637         free_orinocodev(dev);
 638 }                               /* spectrum_cs_detach */
 639
 640 /*
 641  * spectrum_cs_config() is scheduled to run after a CARD_INSERTION
 642  * event is received, to configure the PCMCIA socket, and to make the
 643  * device available to the system.
 644  */
 645
 646 static int
 647 spectrum_cs_config(struct pcmcia_device *link)
 648 {
 649         struct net_device *dev = link->priv;
 650         struct orinoco_private *priv = netdev_priv(dev);
 651         struct orinoco_pccard *card = priv->card;
 652         hermes_t *hw = &priv->hw;
 653         int last_fn, last_ret;
 654         u_char buf[64];
 655         config_info_t conf;
 656         cisinfo_t info;
 657         tuple_t tuple;
 658         cisparse_t parse;
 659         void __iomem *mem;
 660
 661         CS_CHECK(ValidateCIS, pcmcia_validate_cis(link, &info));
 662
 663         /*
 664          * This reads the card's CONFIG tuple to find its
 665          * configuration registers.
 666          */
 667         tuple.DesiredTuple = CISTPL_CONFIG;
 668         tuple.Attributes = 0;
 669         tuple.TupleData = buf;
 670         tuple.TupleDataMax = sizeof(buf);
 671         tuple.TupleOffset = 0;
 672         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
 673         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
 674         CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
 675         link->conf.ConfigBase = parse.config.base;
 676         link->conf.Present = parse.config.rmask[0];
 677
 678         /* Look up the current Vcc */
 679         CS_CHECK(GetConfigurationInfo,
 680                  pcmcia_get_configuration_info(link, &conf));
 681
 682         /*
 683          * In this loop, we scan the CIS for configuration table
 684          * entries, each of which describes a valid card
 685          * configuration, including voltage, IO window, memory window,
 686          * and interrupt settings.
 687          *
 688          * We make no assumptions about the card to be configured: we
 689          * use just the information available in the CIS.  In an ideal
 690          * world, this would work for any PCMCIA card, but it requires
 691          * a complete and accurate CIS.  In practice, a driver usually
 692          * "knows" most of these things without consulting the CIS,
 693          * and most client drivers will only use the CIS to fill in
 694          * implementation-defined details.
 695          */
 696         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 697         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
 698         while (1) {
 699                 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
 700                 cistpl_cftable_entry_t dflt = { .index = 0 };
 701
 702                 if ( (pcmcia_get_tuple_data(link, &tuple) != 0)
 703                     || (pcmcia_parse_tuple(link, &tuple, &parse) != 0))
 704                         goto next_entry;
 705
 706                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
 707                         dflt = *cfg;
 708                 if (cfg->index == 0)
 709                         goto next_entry;
 710                 link->conf.ConfigIndex = cfg->index;
 711
 712                 /* Does this card need audio output? */
 713                 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
 714                         link->conf.Attributes |= CONF_ENABLE_SPKR;
 715                         link->conf.Status = CCSR_AUDIO_ENA;
 716                 }
 717
 718                 /* Use power settings for Vcc and Vpp if present */
 719                 /* Note that the CIS values need to be rescaled */
 720                 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
 721                         if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
 722                                 DEBUG(2, "spectrum_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n",  conf.Vcc, cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
 723                                 if (!ignore_cis_vcc)
 724                                         goto next_entry;
 725                         }
 726                 } else if (dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
 727                         if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM] / 10000) {
 728                                 DEBUG(2, "spectrum_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n",  conf.Vcc, dflt.vcc.param[CISTPL_POWER_VNOM] / 10000);
 729                                 if(!ignore_cis_vcc)
 730                                         goto next_entry;
 731                         }
 732                 }
 733
 734                 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
 735                         link->conf.Vpp =
 736                             cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
 737                 else if (dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
 738                         link->conf.Vpp =
 739                             dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;
 740
 741                 /* Do we need to allocate an interrupt? */
 742                 link->conf.Attributes |= CONF_ENABLE_IRQ;
 743
 744                 /* IO window settings */
 745                 link->io.NumPorts1 = link->io.NumPorts2 = 0;
 746                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
 747                         cistpl_io_t *io =
 748                             (cfg->io.nwin) ? &cfg->io : &dflt.io;
 749                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 750                         if (!(io->flags & CISTPL_IO_8BIT))
 751                                 link->io.Attributes1 =
 752                                     IO_DATA_PATH_WIDTH_16;
 753                         if (!(io->flags & CISTPL_IO_16BIT))
 754                                 link->io.Attributes1 =
 755                                     IO_DATA_PATH_WIDTH_8;
 756                         link->io.IOAddrLines =
 757                             io->flags & CISTPL_IO_LINES_MASK;
 758                         link->io.BasePort1 = io->win[0].base;
 759                         link->io.NumPorts1 = io->win[0].len;
 760                         if (io->nwin > 1) {
 761                                 link->io.Attributes2 =
 762                                     link->io.Attributes1;
 763                                 link->io.BasePort2 = io->win[1].base;
 764                                 link->io.NumPorts2 = io->win[1].len;
 765                         }
 766
 767                         /* This reserves IO space but doesn't actually enable it */
 768                         if (pcmcia_request_io(link, &link->io) != 0)
 769                                 goto next_entry;
 770                 }
 771
 772
 773                 /* If we got this far, we're cool! */
 774
 775                 break;
 776
 777         next_entry:
 778                 pcmcia_disable_device(link);
 779                 last_ret = pcmcia_get_next_tuple(link, &tuple);
 780                 if (last_ret  == CS_NO_MORE_ITEMS) {
 781                         printk(KERN_ERR PFX "GetNextTuple(): No matching "
 782                                "CIS configuration.  Maybe you need the "
 783                                "ignore_cis_vcc=1 parameter.\n");
 784                         goto cs_failed;
 785                 }
 786         }
 787
 788         /*
 789          * Allocate an interrupt line.  Note that this does not assign
 790          * a handler to the interrupt, unless the 'Handler' member of
 791          * the irq structure is initialized.
 792          */
 793         CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
 794
 795         /* We initialize the hermes structure before completing PCMCIA
 796          * configuration just in case the interrupt handler gets
 797          * called. */
 798         mem = ioport_map(link->io.BasePort1, link->io.NumPorts1);
 799         if (!mem)
 800                 goto cs_failed;
 801
 802         hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
 803
 804         /*
 805          * This actually configures the PCMCIA socket -- setting up
 806          * the I/O windows and the interrupt mapping, and putting the
 807          * card and host interface into "Memory and IO" mode.
 808          */
 809         CS_CHECK(RequestConfiguration,
 810                  pcmcia_request_configuration(link, &link->conf));
 811
 812         /* Ok, we have the configuration, prepare to register the netdev */
 813         dev->base_addr = link->io.BasePort1;
 814         dev->irq = link->irq.AssignedIRQ;
 815         SET_MODULE_OWNER(dev);
 816         card->node.major = card->node.minor = 0;
 817
 818         /* Reset card and download firmware */
 819         if (spectrum_cs_hard_reset(priv) != 0) {
 820                 goto failed;
 821         }
 822
 823         SET_NETDEV_DEV(dev, &handle_to_dev(link));
 824         /* Tell the stack we exist */
 825         if (register_netdev(dev) != 0) {
 826                 printk(KERN_ERR PFX "register_netdev() failed\n");
 827                 goto failed;
 828         }
 829
 830         /* At this point, the dev_node_t structure(s) needs to be
 831          * initialized and arranged in a linked list at link->dev_node. */
 832         strcpy(card->node.dev_name, dev->name);
 833         link->dev_node = &card->node; /* link->dev_node being non-NULL is also
 834                                     used to indicate that the
 835                                     net_device has been registered */
 836
 837         /* Finally, report what we've done */
 838         printk(KERN_DEBUG "%s: index 0x%02x: ",
 839                dev->name, link->conf.ConfigIndex);
 840         if (link->conf.Vpp)
 841                 printk(", Vpp %d.%d", link->conf.Vpp / 10,
 842                        link->conf.Vpp % 10);
 843         printk(", irq %d", link->irq.AssignedIRQ);
 844         if (link->io.NumPorts1)
 845                 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
 846                        link->io.BasePort1 + link->io.NumPorts1 - 1);
 847         if (link->io.NumPorts2)
 848                 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
 849                        link->io.BasePort2 + link->io.NumPorts2 - 1);
 850         printk("\n");
 851
 852         return 0;
 853
 854  cs_failed:
 855         cs_error(link, last_fn, last_ret);
 856
 857  failed:
 858         spectrum_cs_release(link);
 859         return -ENODEV;
 860 }                               /* spectrum_cs_config */
 861
 862 /*
 863  * After a card is removed, spectrum_cs_release() will unregister the
 864  * device, and release the PCMCIA configuration.  If the device is
 865  * still open, this will be postponed until it is closed.
 866  */
 867 static void
 868 spectrum_cs_release(struct pcmcia_device *link)
 869 {
 870         struct net_device *dev = link->priv;
 871         struct orinoco_private *priv = netdev_priv(dev);
 872         unsigned long flags;
 873
 874         /* We're committed to taking the device away now, so mark the
 875          * hardware as unavailable */
 876         spin_lock_irqsave(&priv->lock, flags);
 877         priv->hw_unavailable++;
 878         spin_unlock_irqrestore(&priv->lock, flags);
 879
 880         pcmcia_disable_device(link);
 881         if (priv->hw.iobase)
 882                 ioport_unmap(priv->hw.iobase);
 883 }                               /* spectrum_cs_release */
 884
 885
 886 static int
 887 spectrum_cs_suspend(struct pcmcia_device *link)
 888 {
 889         struct net_device *dev = link->priv;
 890         struct orinoco_private *priv = netdev_priv(dev);
 891         unsigned long flags;
 892         int err = 0;
 893
 894         /* Mark the device as stopped, to block IO until later */
 895         spin_lock_irqsave(&priv->lock, flags);
 896
 897         err = __orinoco_down(dev);
 898         if (err)
 899                 printk(KERN_WARNING "%s: Error %d downing interface\n",
 900                        dev->name, err);
 901
 902         netif_device_detach(dev);
 903         priv->hw_unavailable++;
 904
 905         spin_unlock_irqrestore(&priv->lock, flags);
 906
 907         return 0;
 908 }
 909
 910 static int
 911 spectrum_cs_resume(struct pcmcia_device *link)
 912 {
 913         struct net_device *dev = link->priv;
 914         struct orinoco_private *priv = netdev_priv(dev);
 915
 916         netif_device_attach(dev);
 917         priv->hw_unavailable--;
 918         schedule_work(&priv->reset_work);
 919
 920         return 0;
 921 }
 922
 923
 924 /********************************************************************/
 925 /* Module initialization                                            */
 926 /********************************************************************/
 927
 928 /* Can't be declared "const" or the whole __initdata section will
 929  * become const */
 930 static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
 931         " (Pavel Roskin <proski@gnu.org>,"
 932         " David Gibson <hermes@gibson.dropbear.id.au>, et al)";
 933
 934 static struct pcmcia_device_id spectrum_cs_ids[] = {
 935         PCMCIA_DEVICE_MANF_CARD(0x026c, 0x0001), /* Symbol Spectrum24 LA4100 */
 936         PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0001), /* Socket Communications CF */
 937         PCMCIA_DEVICE_PROD_ID12("Intel", "PRO/Wireless LAN PC Card", 0x816cc815, 0x6fbf459a), /* 2011B, not 2011 */
 938         PCMCIA_DEVICE_NULL,
 939 };
 940 MODULE_DEVICE_TABLE(pcmcia, spectrum_cs_ids);
 941
 942 static struct pcmcia_driver orinoco_driver = {
 943         .owner          = THIS_MODULE,
 944         .drv            = {
 945                 .name   = DRIVER_NAME,
 946         },
 947         .probe          = spectrum_cs_probe,
 948         .remove         = spectrum_cs_detach,
 949         .suspend        = spectrum_cs_suspend,
 950         .resume         = spectrum_cs_resume,
 951         .id_table       = spectrum_cs_ids,
 952 };
 953
 954 static int __init
 955 init_spectrum_cs(void)
 956 {
 957         printk(KERN_DEBUG "%s\n", version);
 958
 959         return pcmcia_register_driver(&orinoco_driver);
 960 }
 961
 962 static void __exit
 963 exit_spectrum_cs(void)
 964 {
 965         pcmcia_unregister_driver(&orinoco_driver);
 966 }
 967
 968 module_init(init_spectrum_cs);
 969 module_exit(exit_spectrum_cs);