kernel/drivers/staging/wlan-ng/prism2fw.c

   1 /* from src/prism2/download/prism2dl.c
   2 *
   3 * utility for downloading prism2 images moved into kernelspace
   4 *
   5 * Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
   6 * --------------------------------------------------------------------
   7 *
   8 * linux-wlan
   9 *
  10 *   The contents of this file are subject to the Mozilla Public
  11 *   License Version 1.1 (the "License"); you may not use this file
  12 *   except in compliance with the License. You may obtain a copy of
  13 *   the License at http://www.mozilla.org/MPL/
  14 *
  15 *   Software distributed under the License is distributed on an "AS
  16 *   IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  17 *   implied. See the License for the specific language governing
  18 *   rights and limitations under the License.
  19 *
  20 *   Alternatively, the contents of this file may be used under the
  21 *   terms of the GNU Public License version 2 (the "GPL"), in which
  22 *   case the provisions of the GPL are applicable instead of the
  23 *   above.  If you wish to allow the use of your version of this file
  24 *   only under the terms of the GPL and not to allow others to use
  25 *   your version of this file under the MPL, indicate your decision
  26 *   by deleting the provisions above and replace them with the notice
  27 *   and other provisions required by the GPL.  If you do not delete
  28 *   the provisions above, a recipient may use your version of this
  29 *   file under either the MPL or the GPL.
  30 *
  31 * --------------------------------------------------------------------
  32 *
  33 * Inquiries regarding the linux-wlan Open Source project can be
  34 * made directly to:
  35 *
  36 * AbsoluteValue Systems Inc.
  37 * info@linux-wlan.com
  38 * http://www.linux-wlan.com
  39 *
  40 * --------------------------------------------------------------------
  41 *
  42 * Portions of the development of this software were funded by
  43 * Intersil Corporation as part of PRISM(R) chipset product development.
  44 *
  45 * --------------------------------------------------------------------
  46 */
  47
  48 /*================================================================*/
  49 /* System Includes */
  50 #include <linux/ihex.h>
  51 #include <linux/slab.h>
  52
  53 /*================================================================*/
  54 /* Local Constants */
  55
  56 #define PRISM2_USB_FWFILE       "prism2_ru.fw"
  57 MODULE_FIRMWARE(PRISM2_USB_FWFILE);
  58
  59 #define S3DATA_MAX              5000
  60 #define S3PLUG_MAX              200
  61 #define S3CRC_MAX               200
  62 #define S3INFO_MAX              50
  63
  64 #define S3ADDR_PLUG             (0xff000000UL)
  65 #define S3ADDR_CRC              (0xff100000UL)
  66 #define S3ADDR_INFO             (0xff200000UL)
  67 #define S3ADDR_START            (0xff400000UL)
  68
  69 #define CHUNKS_MAX              100
  70
  71 #define WRITESIZE_MAX           4096
  72
  73 /*================================================================*/
  74 /* Local Types */
  75
  76 struct s3datarec {
  77         u32 len;
  78         u32 addr;
  79         u8 checksum;
  80         u8 *data;
  81 };
  82
  83 struct s3plugrec {
  84         u32 itemcode;
  85         u32 addr;
  86         u32 len;
  87 };
  88
  89 struct s3crcrec {
  90         u32 addr;
  91         u32 len;
  92         unsigned int dowrite;
  93 };
  94
  95 struct s3inforec {
  96         u16 len;
  97         u16 type;
  98         union {
  99                 hfa384x_compident_t version;
 100                 hfa384x_caplevel_t compat;
 101                 u16 buildseq;
 102                 hfa384x_compident_t platform;
 103         } info;
 104 };
 105
 106 struct pda {
 107         u8 buf[HFA384x_PDA_LEN_MAX];
 108         hfa384x_pdrec_t *rec[HFA384x_PDA_RECS_MAX];
 109         unsigned int nrec;
 110 };
 111
 112 struct imgchunk {
 113         u32 addr;       /* start address */
 114         u32 len;        /* in bytes */
 115         u16 crc;        /* CRC value (if it falls at a chunk boundary) */
 116         u8 *data;
 117 };
 118
 119 /*================================================================*/
 120 /* Local Static Definitions */
 121
 122 /*----------------------------------------------------------------*/
 123 /* s-record image processing */
 124
 125 /* Data records */
 126 static unsigned int ns3data;
 127 static struct s3datarec s3data[S3DATA_MAX];
 128
 129 /* Plug records */
 130 static unsigned int ns3plug;
 131 static struct s3plugrec s3plug[S3PLUG_MAX];
 132
 133 /* CRC records */
 134 static unsigned int ns3crc;
 135 static struct s3crcrec s3crc[S3CRC_MAX];
 136
 137 /* Info records */
 138 static unsigned int ns3info;
 139 static struct s3inforec s3info[S3INFO_MAX];
 140
 141 /* S7 record (there _better_ be only one) */
 142 static u32 startaddr;
 143
 144 /* Load image chunks */
 145 static unsigned int nfchunks;
 146 static struct imgchunk fchunk[CHUNKS_MAX];
 147
 148 /* Note that for the following pdrec_t arrays, the len and code */
 149 /*   fields are stored in HOST byte order. The mkpdrlist() function */
 150 /*   does the conversion.  */
 151 /*----------------------------------------------------------------*/
 152 /* PDA, built from [card|newfile]+[addfile1+addfile2...] */
 153
 154 static struct pda pda;
 155 static hfa384x_compident_t nicid;
 156 static hfa384x_caplevel_t rfid;
 157 static hfa384x_caplevel_t macid;
 158 static hfa384x_caplevel_t priid;
 159
 160 /*================================================================*/
 161 /* Local Function Declarations */
 162
 163 static int prism2_fwapply(const struct ihex_binrec *rfptr,
 164 wlandevice_t *wlandev);
 165
 166 static int read_fwfile(const struct ihex_binrec *rfptr);
 167
 168 static int mkimage(struct imgchunk *clist, unsigned int *ccnt);
 169
 170 static int read_cardpda(struct pda *pda, wlandevice_t *wlandev);
 171
 172 static int mkpdrlist(struct pda *pda);
 173
 174 static int plugimage(struct imgchunk *fchunk, unsigned int nfchunks,
 175               struct s3plugrec *s3plug, unsigned int ns3plug, struct pda *pda);
 176
 177 static int crcimage(struct imgchunk *fchunk, unsigned int nfchunks,
 178              struct s3crcrec *s3crc, unsigned int ns3crc);
 179
 180 static int writeimage(wlandevice_t *wlandev, struct imgchunk *fchunk,
 181                unsigned int nfchunks);
 182 static void free_chunks(struct imgchunk *fchunk, unsigned int *nfchunks);
 183
 184 static void free_srecs(void);
 185
 186 static int validate_identity(void);
 187
 188 /*================================================================*/
 189 /* Function Definitions */
 190
 191 /*----------------------------------------------------------------
 192 * prism2_fwtry
 193 *
 194 * Try and get firmware into memory
 195 *
 196 * Arguments:
 197 *       udev    usb device structure
 198 *       wlandev wlan device structure
 199 *
 200 * Returns:
 201 *       0       - success
 202 *       ~0      - failure
 203 ----------------------------------------------------------------*/
 204 static int prism2_fwtry(struct usb_device *udev, wlandevice_t *wlandev)
 205 {
 206         const struct firmware *fw_entry = NULL;
 207
 208         netdev_info(wlandev->netdev, "prism2_usb: Checking for firmware %s\n",
 209                PRISM2_USB_FWFILE);
 210         if (request_ihex_firmware(&fw_entry,
 211                                   PRISM2_USB_FWFILE, &udev->dev) != 0) {
 212                 netdev_info(wlandev->netdev,
 213                        "prism2_usb: Firmware not available, but not essential\n");
 214                 netdev_info(wlandev->netdev,
 215                        "prism2_usb: can continue to use card anyway.\n");
 216                 return 1;
 217         }
 218
 219         netdev_info(wlandev->netdev,
 220                     "prism2_usb: %s will be processed, size %zu\n",
 221                     PRISM2_USB_FWFILE, fw_entry->size);
 222         prism2_fwapply((const struct ihex_binrec *)fw_entry->data, wlandev);
 223
 224         release_firmware(fw_entry);
 225         return 0;
 226 }
 227
 228 /*----------------------------------------------------------------
 229 * prism2_fwapply
 230 *
 231 * Apply the firmware loaded into memory
 232 *
 233 * Arguments:
 234 *       rfptr   firmware image in kernel memory
 235 *       wlandev device
 236 *
 237 * Returns:
 238 *       0       - success
 239 *       ~0      - failure
 240 ----------------------------------------------------------------*/
 241 static int prism2_fwapply(const struct ihex_binrec *rfptr,
 242                           wlandevice_t *wlandev)
 243 {
 244         signed int result = 0;
 245         struct p80211msg_dot11req_mibget getmsg;
 246         p80211itemd_t *item;
 247         u32 *data;
 248
 249         /* Initialize the data structures */
 250         ns3data = 0;
 251         memset(s3data, 0, sizeof(s3data));
 252         ns3plug = 0;
 253         memset(s3plug, 0, sizeof(s3plug));
 254         ns3crc = 0;
 255         memset(s3crc, 0, sizeof(s3crc));
 256         ns3info = 0;
 257         memset(s3info, 0, sizeof(s3info));
 258         startaddr = 0;
 259
 260         nfchunks = 0;
 261         memset(fchunk, 0, sizeof(fchunk));
 262         memset(&nicid, 0, sizeof(nicid));
 263         memset(&rfid, 0, sizeof(rfid));
 264         memset(&macid, 0, sizeof(macid));
 265         memset(&priid, 0, sizeof(priid));
 266
 267         /* clear the pda and add an initial END record */
 268         memset(&pda, 0, sizeof(pda));
 269         pda.rec[0] = (hfa384x_pdrec_t *) pda.buf;
 270         pda.rec[0]->len = cpu_to_le16(2);       /* len in words */
 271         pda.rec[0]->code = cpu_to_le16(HFA384x_PDR_END_OF_PDA);
 272         pda.nrec = 1;
 273
 274         /*-----------------------------------------------------*/
 275         /* Put card into fwload state */
 276         prism2sta_ifstate(wlandev, P80211ENUM_ifstate_fwload);
 277
 278         /* Build the PDA we're going to use. */
 279         if (read_cardpda(&pda, wlandev)) {
 280                 netdev_err(wlandev->netdev, "load_cardpda failed, exiting.\n");
 281                 return 1;
 282         }
 283
 284         /* read the card's PRI-SUP */
 285         memset(&getmsg, 0, sizeof(getmsg));
 286         getmsg.msgcode = DIDmsg_dot11req_mibget;
 287         getmsg.msglen = sizeof(getmsg);
 288         strcpy(getmsg.devname, wlandev->name);
 289
 290         getmsg.mibattribute.did = DIDmsg_dot11req_mibget_mibattribute;
 291         getmsg.mibattribute.status = P80211ENUM_msgitem_status_data_ok;
 292         getmsg.resultcode.did = DIDmsg_dot11req_mibget_resultcode;
 293         getmsg.resultcode.status = P80211ENUM_msgitem_status_no_value;
 294
 295         item = (p80211itemd_t *) getmsg.mibattribute.data;
 296         item->did = DIDmib_p2_p2NIC_p2PRISupRange;
 297         item->status = P80211ENUM_msgitem_status_no_value;
 298
 299         data = (u32 *) item->data;
 300
 301         /* DIDmsg_dot11req_mibget */
 302         prism2mgmt_mibset_mibget(wlandev, &getmsg);
 303         if (getmsg.resultcode.data != P80211ENUM_resultcode_success)
 304                 netdev_err(wlandev->netdev, "Couldn't fetch PRI-SUP info\n");
 305
 306         /* Already in host order */
 307         priid.role = *data++;
 308         priid.id = *data++;
 309         priid.variant = *data++;
 310         priid.bottom = *data++;
 311         priid.top = *data++;
 312
 313         /* Read the S3 file */
 314         result = read_fwfile(rfptr);
 315         if (result) {
 316                 netdev_err(wlandev->netdev,
 317                            "Failed to read the data exiting.\n");
 318                 return 1;
 319         }
 320
 321         result = validate_identity();
 322
 323         if (result) {
 324                 netdev_err(wlandev->netdev, "Incompatible firmware image.\n");
 325                 return 1;
 326         }
 327
 328         if (startaddr == 0x00000000) {
 329                 netdev_err(wlandev->netdev,
 330                            "Can't RAM download a Flash image!\n");
 331                 return 1;
 332         }
 333
 334         /* Make the image chunks */
 335         result = mkimage(fchunk, &nfchunks);
 336
 337         /* Do any plugging */
 338         result = plugimage(fchunk, nfchunks, s3plug, ns3plug, &pda);
 339         if (result) {
 340                 netdev_err(wlandev->netdev, "Failed to plug data.\n");
 341                 return 1;
 342         }
 343
 344         /* Insert any CRCs */
 345         if (crcimage(fchunk, nfchunks, s3crc, ns3crc)) {
 346                 netdev_err(wlandev->netdev, "Failed to insert all CRCs\n");
 347                 return 1;
 348         }
 349
 350         /* Write the image */
 351         result = writeimage(wlandev, fchunk, nfchunks);
 352         if (result) {
 353                 netdev_err(wlandev->netdev, "Failed to ramwrite image data.\n");
 354                 return 1;
 355         }
 356
 357         /* clear any allocated memory */
 358         free_chunks(fchunk, &nfchunks);
 359         free_srecs();
 360
 361         netdev_info(wlandev->netdev, "prism2_usb: firmware loading finished.\n");
 362
 363         return result;
 364 }
 365
 366 /*----------------------------------------------------------------
 367 * crcimage
 368 *
 369 * Adds a CRC16 in the two bytes prior to each block identified by
 370 * an S3 CRC record.  Currently, we don't actually do a CRC we just
 371 * insert the value 0xC0DE in hfa384x order.
 372 *
 373 * Arguments:
 374 *       fchunk          Array of image chunks
 375 *       nfchunks        Number of image chunks
 376 *       s3crc           Array of crc records
 377 *       ns3crc          Number of crc records
 378 *
 379 * Returns:
 380 *       0       success
 381 *       ~0      failure
 382 ----------------------------------------------------------------*/
 383 static int crcimage(struct imgchunk *fchunk, unsigned int nfchunks,
 384              struct s3crcrec *s3crc, unsigned int ns3crc)
 385 {
 386         int result = 0;
 387         int i;
 388         int c;
 389         u32 crcstart;
 390         u32 crcend;
 391         u32 cstart = 0;
 392         u32 cend;
 393         u8 *dest;
 394         u32 chunkoff;
 395
 396         for (i = 0; i < ns3crc; i++) {
 397                 if (!s3crc[i].dowrite)
 398                         continue;
 399                 crcstart = s3crc[i].addr;
 400                 crcend = s3crc[i].addr + s3crc[i].len;
 401                 /* Find chunk */
 402                 for (c = 0; c < nfchunks; c++) {
 403                         cstart = fchunk[c].addr;
 404                         cend = fchunk[c].addr + fchunk[c].len;
 405                         /* the line below does an address & len match search */
 406                         /* unfortunately, I've found that the len fields of */
 407                         /* some crc records don't match with the length of */
 408                         /* the actual data, so we're not checking right now */
 409                         /* if (crcstart-2 >= cstart && crcend <= cend) break; */
 410
 411                         /* note the -2 below, it's to make sure the chunk has */
 412                         /* space for the CRC value */
 413                         if (crcstart - 2 >= cstart && crcstart < cend)
 414                                 break;
 415                 }
 416                 if (c >= nfchunks) {
 417                         pr_err("Failed to find chunk for crcrec[%d], addr=0x%06x len=%d , aborting crc.\n",
 418                                i, s3crc[i].addr, s3crc[i].len);
 419                         return 1;
 420                 }
 421
 422                 /* Insert crc */
 423                 pr_debug("Adding crc @ 0x%06x\n", s3crc[i].addr - 2);
 424                 chunkoff = crcstart - cstart - 2;
 425                 dest = fchunk[c].data + chunkoff;
 426                 *dest = 0xde;
 427                 *(dest + 1) = 0xc0;
 428
 429         }
 430         return result;
 431 }
 432
 433 /*----------------------------------------------------------------
 434 * free_chunks
 435 *
 436 * Clears the chunklist data structures in preparation for a new file.
 437 *
 438 * Arguments:
 439 *       none
 440 *
 441 * Returns:
 442 *       nothing
 443 ----------------------------------------------------------------*/
 444 static void free_chunks(struct imgchunk *fchunk, unsigned int *nfchunks)
 445 {
 446         int i;
 447
 448         for (i = 0; i < *nfchunks; i++)
 449                 kfree(fchunk[i].data);
 450
 451         *nfchunks = 0;
 452         memset(fchunk, 0, sizeof(*fchunk));
 453
 454 }
 455
 456 /*----------------------------------------------------------------
 457 * free_srecs
 458 *
 459 * Clears the srec data structures in preparation for a new file.
 460 *
 461 * Arguments:
 462 *       none
 463 *
 464 * Returns:
 465 *       nothing
 466 ----------------------------------------------------------------*/
 467 static void free_srecs(void)
 468 {
 469         ns3data = 0;
 470         memset(s3data, 0, sizeof(s3data));
 471         ns3plug = 0;
 472         memset(s3plug, 0, sizeof(s3plug));
 473         ns3crc = 0;
 474         memset(s3crc, 0, sizeof(s3crc));
 475         ns3info = 0;
 476         memset(s3info, 0, sizeof(s3info));
 477         startaddr = 0;
 478 }
 479
 480 /*----------------------------------------------------------------
 481 * mkimage
 482 *
 483 * Scans the currently loaded set of S records for data residing
 484 * in contiguous memory regions.  Each contiguous region is then
 485 * made into a 'chunk'.  This function assumes that we're building
 486 * a new chunk list.  Assumes the s3data items are in sorted order.
 487 *
 488 * Arguments:    none
 489 *
 490 * Returns:
 491 *       0       - success
 492 *       ~0      - failure (probably an errno)
 493 ----------------------------------------------------------------*/
 494 static int mkimage(struct imgchunk *clist, unsigned int *ccnt)
 495 {
 496         int result = 0;
 497         int i;
 498         int j;
 499         int currchunk = 0;
 500         u32 nextaddr = 0;
 501         u32 s3start;
 502         u32 s3end;
 503         u32 cstart = 0;
 504         u32 cend;
 505         u32 coffset;
 506
 507         /* There may already be data in the chunklist */
 508         *ccnt = 0;
 509
 510         /* Establish the location and size of each chunk */
 511         for (i = 0; i < ns3data; i++) {
 512                 if (s3data[i].addr == nextaddr) {
 513                         /* existing chunk, grow it */
 514                         clist[currchunk].len += s3data[i].len;
 515                         nextaddr += s3data[i].len;
 516                 } else {
 517                         /* New chunk */
 518                         (*ccnt)++;
 519                         currchunk = *ccnt - 1;
 520                         clist[currchunk].addr = s3data[i].addr;
 521                         clist[currchunk].len = s3data[i].len;
 522                         nextaddr = s3data[i].addr + s3data[i].len;
 523                         /* Expand the chunk if there is a CRC record at */
 524                         /* their beginning bound */
 525                         for (j = 0; j < ns3crc; j++) {
 526                                 if (s3crc[j].dowrite &&
 527                                     s3crc[j].addr == clist[currchunk].addr) {
 528                                         clist[currchunk].addr -= 2;
 529                                         clist[currchunk].len += 2;
 530                                 }
 531                         }
 532                 }
 533         }
 534
 535         /* We're currently assuming there aren't any overlapping chunks */
 536         /*  if this proves false, we'll need to add code to coalesce. */
 537
 538         /* Allocate buffer space for chunks */
 539         for (i = 0; i < *ccnt; i++) {
 540                 clist[i].data = kzalloc(clist[i].len, GFP_KERNEL);
 541                 if (clist[i].data == NULL) {
 542                         pr_err("failed to allocate image space, exitting.\n");
 543                         return 1;
 544                 }
 545                 pr_debug("chunk[%d]: addr=0x%06x len=%d\n",
 546                          i, clist[i].addr, clist[i].len);
 547         }
 548
 549         /* Copy srec data to chunks */
 550         for (i = 0; i < ns3data; i++) {
 551                 s3start = s3data[i].addr;
 552                 s3end = s3start + s3data[i].len - 1;
 553                 for (j = 0; j < *ccnt; j++) {
 554                         cstart = clist[j].addr;
 555                         cend = cstart + clist[j].len - 1;
 556                         if (s3start >= cstart && s3end <= cend)
 557                                 break;
 558                 }
 559                 if (((unsigned int)j) >= (*ccnt)) {
 560                         pr_err("s3rec(a=0x%06x,l=%d), no chunk match, exiting.\n",
 561                                s3start, s3data[i].len);
 562                         return 1;
 563                 }
 564                 coffset = s3start - cstart;
 565                 memcpy(clist[j].data + coffset, s3data[i].data, s3data[i].len);
 566         }
 567
 568         return result;
 569 }
 570
 571 /*----------------------------------------------------------------
 572 * mkpdrlist
 573 *
 574 * Reads a raw PDA and builds an array of pdrec_t structures.
 575 *
 576 * Arguments:
 577 *       pda     buffer containing raw PDA bytes
 578 *       pdrec   ptr to an array of pdrec_t's.  Will be filled on exit.
 579 *       nrec    ptr to a variable that will contain the count of PDRs
 580 *
 581 * Returns:
 582 *       0       - success
 583 *       ~0      - failure (probably an errno)
 584 ----------------------------------------------------------------*/
 585 static int mkpdrlist(struct pda *pda)
 586 {
 587         int result = 0;
 588         u16 *pda16 = (u16 *) pda->buf;
 589         int curroff;            /* in 'words' */
 590
 591         pda->nrec = 0;
 592         curroff = 0;
 593         while (curroff < (HFA384x_PDA_LEN_MAX / 2) &&
 594                le16_to_cpu(pda16[curroff + 1]) != HFA384x_PDR_END_OF_PDA) {
 595                 pda->rec[pda->nrec] = (hfa384x_pdrec_t *) &(pda16[curroff]);
 596
 597                 if (le16_to_cpu(pda->rec[pda->nrec]->code) ==
 598                     HFA384x_PDR_NICID) {
 599                         memcpy(&nicid, &pda->rec[pda->nrec]->data.nicid,
 600                                sizeof(nicid));
 601                         nicid.id = le16_to_cpu(nicid.id);
 602                         nicid.variant = le16_to_cpu(nicid.variant);
 603                         nicid.major = le16_to_cpu(nicid.major);
 604                         nicid.minor = le16_to_cpu(nicid.minor);
 605                 }
 606                 if (le16_to_cpu(pda->rec[pda->nrec]->code) ==
 607                     HFA384x_PDR_MFISUPRANGE) {
 608                         memcpy(&rfid, &pda->rec[pda->nrec]->data.mfisuprange,
 609                                sizeof(rfid));
 610                         rfid.id = le16_to_cpu(rfid.id);
 611                         rfid.variant = le16_to_cpu(rfid.variant);
 612                         rfid.bottom = le16_to_cpu(rfid.bottom);
 613                         rfid.top = le16_to_cpu(rfid.top);
 614                 }
 615                 if (le16_to_cpu(pda->rec[pda->nrec]->code) ==
 616                     HFA384x_PDR_CFISUPRANGE) {
 617                         memcpy(&macid, &pda->rec[pda->nrec]->data.cfisuprange,
 618                                sizeof(macid));
 619                         macid.id = le16_to_cpu(macid.id);
 620                         macid.variant = le16_to_cpu(macid.variant);
 621                         macid.bottom = le16_to_cpu(macid.bottom);
 622                         macid.top = le16_to_cpu(macid.top);
 623                 }
 624
 625                 (pda->nrec)++;
 626                 curroff += le16_to_cpu(pda16[curroff]) + 1;
 627
 628         }
 629         if (curroff >= (HFA384x_PDA_LEN_MAX / 2)) {
 630                 pr_err("no end record found or invalid lengths in PDR data, exiting. %x %d\n",
 631                        curroff, pda->nrec);
 632                 return 1;
 633         }
 634         if (le16_to_cpu(pda16[curroff + 1]) == HFA384x_PDR_END_OF_PDA) {
 635                 pda->rec[pda->nrec] = (hfa384x_pdrec_t *) &(pda16[curroff]);
 636                 (pda->nrec)++;
 637         }
 638         return result;
 639 }
 640
 641 /*----------------------------------------------------------------
 642 * plugimage
 643 *
 644 * Plugs the given image using the given plug records from the given
 645 * PDA and filename.
 646 *
 647 * Arguments:
 648 *       fchunk          Array of image chunks
 649 *       nfchunks        Number of image chunks
 650 *       s3plug          Array of plug records
 651 *       ns3plug         Number of plug records
 652 *       pda             Current pda data
 653 *
 654 * Returns:
 655 *       0       success
 656 *       ~0      failure
 657 ----------------------------------------------------------------*/
 658 static int plugimage(struct imgchunk *fchunk, unsigned int nfchunks,
 659               struct s3plugrec *s3plug, unsigned int ns3plug, struct pda *pda)
 660 {
 661         int result = 0;
 662         int i;                  /* plug index */
 663         int j;                  /* index of PDR or -1 if fname plug */
 664         int c;                  /* chunk index */
 665         u32 pstart;
 666         u32 pend;
 667         u32 cstart = 0;
 668         u32 cend;
 669         u32 chunkoff;
 670         u8 *dest;
 671
 672         /* for each plug record */
 673         for (i = 0; i < ns3plug; i++) {
 674                 pstart = s3plug[i].addr;
 675                 pend = s3plug[i].addr + s3plug[i].len;
 676                 /* find the matching PDR (or filename) */
 677                 if (s3plug[i].itemcode != 0xffffffffUL) { /* not filename */
 678                         for (j = 0; j < pda->nrec; j++) {
 679                                 if (s3plug[i].itemcode ==
 680                                     le16_to_cpu(pda->rec[j]->code))
 681                                         break;
 682                         }
 683                 } else {
 684                         j = -1;
 685                 }
 686                 if (j >= pda->nrec && j != -1) { /*  if no matching PDR, fail */
 687                         pr_warn("warning: Failed to find PDR for plugrec 0x%04x.\n",
 688                                 s3plug[i].itemcode);
 689                         continue;       /* and move on to the next PDR */
 690 #if 0
 691                         /* MSM: They swear that unless it's the MAC address,
 692                          * the serial number, or the TX calibration records,
 693                          * then there's reasonable defaults in the f/w
 694                          * image.  Therefore, missing PDRs in the card
 695                          * should only be a warning, not fatal.
 696                          * TODO: add fatals for the PDRs mentioned above.
 697                          */
 698                         result = 1;
 699                         continue;
 700 #endif
 701                 }
 702
 703                 /* Validate plug len against PDR len */
 704                 if (j != -1 && s3plug[i].len < le16_to_cpu(pda->rec[j]->len)) {
 705                         pr_err("error: Plug vs. PDR len mismatch for plugrec 0x%04x, abort plugging.\n",
 706                                s3plug[i].itemcode);
 707                         result = 1;
 708                         continue;
 709                 }
 710
 711                 /* Validate plug address against chunk data and identify chunk */
 712                 for (c = 0; c < nfchunks; c++) {
 713                         cstart = fchunk[c].addr;
 714                         cend = fchunk[c].addr + fchunk[c].len;
 715                         if (pstart >= cstart && pend <= cend)
 716                                 break;
 717                 }
 718                 if (c >= nfchunks) {
 719                         pr_err("error: Failed to find image chunk for plugrec 0x%04x.\n",
 720                                s3plug[i].itemcode);
 721                         result = 1;
 722                         continue;
 723                 }
 724
 725                 /* Plug data */
 726                 chunkoff = pstart - cstart;
 727                 dest = fchunk[c].data + chunkoff;
 728                 pr_debug("Plugging item 0x%04x @ 0x%06x, len=%d, cnum=%d coff=0x%06x\n",
 729                          s3plug[i].itemcode, pstart, s3plug[i].len,
 730                          c, chunkoff);
 731
 732                 if (j == -1) {  /* plug the filename */
 733                         memset(dest, 0, s3plug[i].len);
 734                         strncpy(dest, PRISM2_USB_FWFILE, s3plug[i].len - 1);
 735                 } else {        /* plug a PDR */
 736                         memcpy(dest, &(pda->rec[j]->data), s3plug[i].len);
 737                 }
 738         }
 739         return result;
 740
 741 }
 742
 743 /*----------------------------------------------------------------
 744 * read_cardpda
 745 *
 746 * Sends the command for the driver to read the pda from the card
 747 * named in the device variable.  Upon success, the card pda is
 748 * stored in the "cardpda" variables.  Note that the pda structure
 749 * is considered 'well formed' after this function.  That means
 750 * that the nrecs is valid, the rec array has been set up, and there's
 751 * a valid PDAEND record in the raw PDA data.
 752 *
 753 * Arguments:
 754 *       pda             pda structure
 755 *       wlandev         device
 756 *
 757 * Returns:
 758 *       0       - success
 759 *       ~0      - failure (probably an errno)
 760 ----------------------------------------------------------------*/
 761 static int read_cardpda(struct pda *pda, wlandevice_t *wlandev)
 762 {
 763         int result = 0;
 764         struct p80211msg_p2req_readpda *msg;
 765
 766         msg = kzalloc(sizeof(*msg), GFP_KERNEL);
 767         if (!msg)
 768                 return -ENOMEM;
 769
 770         /* set up the msg */
 771         msg->msgcode = DIDmsg_p2req_readpda;
 772         msg->msglen = sizeof(msg);
 773         strcpy(msg->devname, wlandev->name);
 774         msg->pda.did = DIDmsg_p2req_readpda_pda;
 775         msg->pda.len = HFA384x_PDA_LEN_MAX;
 776         msg->pda.status = P80211ENUM_msgitem_status_no_value;
 777         msg->resultcode.did = DIDmsg_p2req_readpda_resultcode;
 778         msg->resultcode.len = sizeof(u32);
 779         msg->resultcode.status = P80211ENUM_msgitem_status_no_value;
 780
 781         if (prism2mgmt_readpda(wlandev, msg) != 0) {
 782                 /* prism2mgmt_readpda prints an errno if appropriate */
 783                 result = -1;
 784         } else if (msg->resultcode.data == P80211ENUM_resultcode_success) {
 785                 memcpy(pda->buf, msg->pda.data, HFA384x_PDA_LEN_MAX);
 786                 result = mkpdrlist(pda);
 787         } else {
 788                 /* resultcode must've been something other than success */
 789                 result = -1;
 790         }
 791
 792         kfree(msg);
 793         return result;
 794 }
 795
 796 /*----------------------------------------------------------------
 797 * read_fwfile
 798 *
 799 * Reads the given fw file which should have been compiled from an srec
 800 * file. Each record in the fw file will either be a plain data record,
 801 * a start address record, or other records used for plugging.
 802 *
 803 * Note that data records are expected to be sorted into
 804 * ascending address order in the fw file.
 805 *
 806 * Note also that the start address record, originally an S7 record in
 807 * the srec file, is expected in the fw file to be like a data record but
 808 * with a certain address to make it identifiable.
 809 *
 810 * Here's the SREC format that the fw should have come from:
 811 * S[37]nnaaaaaaaaddd...dddcc
 812 *
 813 *       nn - number of bytes starting with the address field
 814 * aaaaaaaa - address in readable (or big endian) format
 815 * dd....dd - 0-245 data bytes (two chars per byte)
 816 *       cc - checksum
 817 *
 818 * The S7 record's (there should be only one) address value gets
 819 * converted to an S3 record with address of 0xff400000, with the
 820 * start address being stored as a 4 byte data word. That address is
 821 * the start execution address used for RAM downloads.
 822 *
 823 * The S3 records have a collection of subformats indicated by the
 824 * value of aaaaaaaa:
 825 *   0xff000000 - Plug record, data field format:
 826 *                xxxxxxxxaaaaaaaassssssss
 827 *                x - PDR code number (little endian)
 828 *                a - Address in load image to plug (little endian)
 829 *                s - Length of plug data area (little endian)
 830 *
 831 *   0xff100000 - CRC16 generation record, data field format:
 832 *                aaaaaaaassssssssbbbbbbbb
 833 *                a - Start address for CRC calculation (little endian)
 834 *                s - Length of data to  calculate over (little endian)
 835 *                b - Boolean, true=write crc, false=don't write
 836 *
 837 *   0xff200000 - Info record, data field format:
 838 *                ssssttttdd..dd
 839 *                s - Size in words (little endian)
 840 *                t - Info type (little endian), see #defines and
 841 *                    struct s3inforec for details about types.
 842 *                d - (s - 1) little endian words giving the contents of
 843 *                    the given info type.
 844 *
 845 *   0xff400000 - Start address record, data field format:
 846 *                aaaaaaaa
 847 *                a - Address in load image to plug (little endian)
 848 *
 849 * Arguments:
 850 *       record  firmware image (ihex record structure) in kernel memory
 851 *
 852 * Returns:
 853 *       0       - success
 854 *       ~0      - failure (probably an errno)
 855 ----------------------------------------------------------------*/
 856 static int read_fwfile(const struct ihex_binrec *record)
 857 {
 858         int             i;
 859         int             rcnt = 0;
 860         u16             *tmpinfo;
 861         u16             *ptr16;
 862         u32             *ptr32, len, addr;
 863
 864         pr_debug("Reading fw file ...\n");
 865
 866         while (record) {
 867
 868                 rcnt++;
 869
 870                 len = be16_to_cpu(record->len);
 871                 addr = be32_to_cpu(record->addr);
 872
 873                 /* Point into data for different word lengths */
 874                 ptr32 = (u32 *) record->data;
 875                 ptr16 = (u16 *) record->data;
 876
 877                 /* parse what was an S3 srec and put it in the right array */
 878                 switch (addr) {
 879                 case S3ADDR_START:
 880                         startaddr = *ptr32;
 881                         pr_debug("  S7 start addr, record=%d addr=0x%08x\n",
 882                                       rcnt,
 883                                       startaddr);
 884                         break;
 885                 case S3ADDR_PLUG:
 886                         s3plug[ns3plug].itemcode = *ptr32;
 887                         s3plug[ns3plug].addr = *(ptr32 + 1);
 888                         s3plug[ns3plug].len = *(ptr32 + 2);
 889
 890                         pr_debug("  S3 plugrec, record=%d itemcode=0x%08x addr=0x%08x len=%d\n",
 891                                       rcnt,
 892                                       s3plug[ns3plug].itemcode,
 893                                       s3plug[ns3plug].addr,
 894                                       s3plug[ns3plug].len);
 895
 896                         ns3plug++;
 897                         if (ns3plug == S3PLUG_MAX) {
 898                                 pr_err("S3 plugrec limit reached - aborting\n");
 899                                 return 1;
 900                         }
 901                         break;
 902                 case S3ADDR_CRC:
 903                         s3crc[ns3crc].addr = *ptr32;
 904                         s3crc[ns3crc].len = *(ptr32 + 1);
 905                         s3crc[ns3crc].dowrite = *(ptr32 + 2);
 906
 907                         pr_debug("  S3 crcrec, record=%d addr=0x%08x len=%d write=0x%08x\n",
 908                                       rcnt,
 909                                       s3crc[ns3crc].addr,
 910                                       s3crc[ns3crc].len,
 911                                       s3crc[ns3crc].dowrite);
 912                         ns3crc++;
 913                         if (ns3crc == S3CRC_MAX) {
 914                                 pr_err("S3 crcrec limit reached - aborting\n");
 915                                 return 1;
 916                         }
 917                         break;
 918                 case S3ADDR_INFO:
 919                         s3info[ns3info].len = *ptr16;
 920                         s3info[ns3info].type = *(ptr16 + 1);
 921
 922                         pr_debug("  S3 inforec, record=%d len=0x%04x type=0x%04x\n",
 923                                       rcnt,
 924                                       s3info[ns3info].len,
 925                                       s3info[ns3info].type);
 926                         if (((s3info[ns3info].len - 1) * sizeof(u16)) > sizeof(s3info[ns3info].info)) {
 927                                 pr_err("S3 inforec length too long - aborting\n");
 928                                 return 1;
 929                         }
 930
 931                         tmpinfo = (u16 *)&(s3info[ns3info].info.version);
 932                         pr_debug("            info=");
 933                         for (i = 0; i < s3info[ns3info].len - 1; i++) {
 934                                 tmpinfo[i] = *(ptr16 + 2 + i);
 935                                 pr_debug("%04x ", tmpinfo[i]);
 936                         }
 937                         pr_debug("\n");
 938
 939                         ns3info++;
 940                         if (ns3info == S3INFO_MAX) {
 941                                 pr_err("S3 inforec limit reached - aborting\n");
 942                                 return 1;
 943                         }
 944                         break;
 945                 default:        /* Data record */
 946                         s3data[ns3data].addr = addr;
 947                         s3data[ns3data].len = len;
 948                         s3data[ns3data].data = (uint8_t *) record->data;
 949                         ns3data++;
 950                         if (ns3data == S3DATA_MAX) {
 951                                 pr_err("S3 datarec limit reached - aborting\n");
 952                                 return 1;
 953                         }
 954                         break;
 955                 }
 956                 record = ihex_next_binrec(record);
 957         }
 958         return 0;
 959 }
 960
 961 /*----------------------------------------------------------------
 962 * writeimage
 963 *
 964 * Takes the chunks, builds p80211 messages and sends them down
 965 * to the driver for writing to the card.
 966 *
 967 * Arguments:
 968 *       wlandev         device
 969 *       fchunk          Array of image chunks
 970 *       nfchunks        Number of image chunks
 971 *
 972 * Returns:
 973 *       0       success
 974 *       ~0      failure
 975 ----------------------------------------------------------------*/
 976 static int writeimage(wlandevice_t *wlandev, struct imgchunk *fchunk,
 977                unsigned int nfchunks)
 978 {
 979         int result = 0;
 980         struct p80211msg_p2req_ramdl_state *rstmsg;
 981         struct p80211msg_p2req_ramdl_write *rwrmsg;
 982         u32 resultcode;
 983         int i;
 984         int j;
 985         unsigned int nwrites;
 986         u32 curroff;
 987         u32 currlen;
 988         u32 currdaddr;
 989
 990         rstmsg = kzalloc(sizeof(*rstmsg), GFP_KERNEL);
 991         rwrmsg = kzalloc(sizeof(*rwrmsg), GFP_KERNEL);
 992         if (!rstmsg || !rwrmsg) {
 993                 kfree(rstmsg);
 994                 kfree(rwrmsg);
 995                 netdev_err(wlandev->netdev,
 996                            "writeimage: no memory for firmware download, aborting download\n");
 997                 return -ENOMEM;
 998         }
 999
1000         /* Initialize the messages */
1001         strcpy(rstmsg->devname, wlandev->name);
1002         rstmsg->msgcode = DIDmsg_p2req_ramdl_state;
1003         rstmsg->msglen = sizeof(*rstmsg);
1004         rstmsg->enable.did = DIDmsg_p2req_ramdl_state_enable;
1005         rstmsg->exeaddr.did = DIDmsg_p2req_ramdl_state_exeaddr;
1006         rstmsg->resultcode.did = DIDmsg_p2req_ramdl_state_resultcode;
1007         rstmsg->enable.status = P80211ENUM_msgitem_status_data_ok;
1008         rstmsg->exeaddr.status = P80211ENUM_msgitem_status_data_ok;
1009         rstmsg->resultcode.status = P80211ENUM_msgitem_status_no_value;
1010         rstmsg->enable.len = sizeof(u32);
1011         rstmsg->exeaddr.len = sizeof(u32);
1012         rstmsg->resultcode.len = sizeof(u32);
1013
1014         strcpy(rwrmsg->devname, wlandev->name);
1015         rwrmsg->msgcode = DIDmsg_p2req_ramdl_write;
1016         rwrmsg->msglen = sizeof(*rwrmsg);
1017         rwrmsg->addr.did = DIDmsg_p2req_ramdl_write_addr;
1018         rwrmsg->len.did = DIDmsg_p2req_ramdl_write_len;
1019         rwrmsg->data.did = DIDmsg_p2req_ramdl_write_data;
1020         rwrmsg->resultcode.did = DIDmsg_p2req_ramdl_write_resultcode;
1021         rwrmsg->addr.status = P80211ENUM_msgitem_status_data_ok;
1022         rwrmsg->len.status = P80211ENUM_msgitem_status_data_ok;
1023         rwrmsg->data.status = P80211ENUM_msgitem_status_data_ok;
1024         rwrmsg->resultcode.status = P80211ENUM_msgitem_status_no_value;
1025         rwrmsg->addr.len = sizeof(u32);
1026         rwrmsg->len.len = sizeof(u32);
1027         rwrmsg->data.len = WRITESIZE_MAX;
1028         rwrmsg->resultcode.len = sizeof(u32);
1029
1030         /* Send xxx_state(enable) */
1031         pr_debug("Sending dl_state(enable) message.\n");
1032         rstmsg->enable.data = P80211ENUM_truth_true;
1033         rstmsg->exeaddr.data = startaddr;
1034
1035         result = prism2mgmt_ramdl_state(wlandev, rstmsg);
1036         if (result) {
1037                 netdev_err(wlandev->netdev,
1038                            "writeimage state enable failed w/ result=%d, aborting download\n",
1039                            result);
1040                 goto free_result;
1041         }
1042         resultcode = rstmsg->resultcode.data;
1043         if (resultcode != P80211ENUM_resultcode_success) {
1044                 netdev_err(wlandev->netdev,
1045                            "writeimage()->xxxdl_state msg indicates failure, w/ resultcode=%d, aborting download.\n",
1046                            resultcode);
1047                 result = 1;
1048                 goto free_result;
1049         }
1050
1051         /* Now, loop through the data chunks and send WRITESIZE_MAX data */
1052         for (i = 0; i < nfchunks; i++) {
1053                 nwrites = fchunk[i].len / WRITESIZE_MAX;
1054                 nwrites += (fchunk[i].len % WRITESIZE_MAX) ? 1 : 0;
1055                 curroff = 0;
1056                 for (j = 0; j < nwrites; j++) {
1057                         /* TODO Move this to a separate function */
1058                         int lenleft = fchunk[i].len - (WRITESIZE_MAX * j);
1059
1060                         if (fchunk[i].len > WRITESIZE_MAX)
1061                                 currlen = WRITESIZE_MAX;
1062                         else
1063                                 currlen = lenleft;
1064                         curroff = j * WRITESIZE_MAX;
1065                         currdaddr = fchunk[i].addr + curroff;
1066                         /* Setup the message */
1067                         rwrmsg->addr.data = currdaddr;
1068                         rwrmsg->len.data = currlen;
1069                         memcpy(rwrmsg->data.data,
1070                                fchunk[i].data + curroff, currlen);
1071
1072                         /* Send flashdl_write(pda) */
1073                         pr_debug
1074                             ("Sending xxxdl_write message addr=%06x len=%d.\n",
1075                              currdaddr, currlen);
1076
1077                         result = prism2mgmt_ramdl_write(wlandev, rwrmsg);
1078
1079                         /* Check the results */
1080                         if (result) {
1081                                 netdev_err(wlandev->netdev,
1082                                            "writeimage chunk write failed w/ result=%d, aborting download\n",
1083                                            result);
1084                                 goto free_result;
1085                         }
1086                         resultcode = rstmsg->resultcode.data;
1087                         if (resultcode != P80211ENUM_resultcode_success) {
1088                                 pr_err("writeimage()->xxxdl_write msg indicates failure, w/ resultcode=%d, aborting download.\n",
1089                                        resultcode);
1090                                 result = 1;
1091                                 goto free_result;
1092                         }
1093
1094                 }
1095         }
1096
1097         /* Send xxx_state(disable) */
1098         pr_debug("Sending dl_state(disable) message.\n");
1099         rstmsg->enable.data = P80211ENUM_truth_false;
1100         rstmsg->exeaddr.data = 0;
1101
1102         result = prism2mgmt_ramdl_state(wlandev, rstmsg);
1103         if (result) {
1104                 netdev_err(wlandev->netdev,
1105                            "writeimage state disable failed w/ result=%d, aborting download\n",
1106                            result);
1107                 goto free_result;
1108         }
1109         resultcode = rstmsg->resultcode.data;
1110         if (resultcode != P80211ENUM_resultcode_success) {
1111                 netdev_err(wlandev->netdev,
1112                            "writeimage()->xxxdl_state msg indicates failure, w/ resultcode=%d, aborting download.\n",
1113                            resultcode);
1114                 result = 1;
1115                 goto free_result;
1116         }
1117
1118 free_result:
1119         kfree(rstmsg);
1120         kfree(rwrmsg);
1121         return result;
1122 }
1123
1124 static int validate_identity(void)
1125 {
1126         int i;
1127         int result = 1;
1128         int trump = 0;
1129
1130         pr_debug("NIC ID: %#x v%d.%d.%d\n",
1131                  nicid.id, nicid.major, nicid.minor, nicid.variant);
1132         pr_debug("MFI ID: %#x v%d %d->%d\n",
1133                  rfid.id, rfid.variant, rfid.bottom, rfid.top);
1134         pr_debug("CFI ID: %#x v%d %d->%d\n",
1135                  macid.id, macid.variant, macid.bottom, macid.top);
1136         pr_debug("PRI ID: %#x v%d %d->%d\n",
1137                  priid.id, priid.variant, priid.bottom, priid.top);
1138
1139         for (i = 0; i < ns3info; i++) {
1140                 switch (s3info[i].type) {
1141                 case 1:
1142                         pr_debug("Version:  ID %#x %d.%d.%d\n",
1143                                  s3info[i].info.version.id,
1144                                  s3info[i].info.version.major,
1145                                  s3info[i].info.version.minor,
1146                                  s3info[i].info.version.variant);
1147                         break;
1148                 case 2:
1149                         pr_debug("Compat: Role %#x Id %#x v%d %d->%d\n",
1150                                  s3info[i].info.compat.role,
1151                                  s3info[i].info.compat.id,
1152                                  s3info[i].info.compat.variant,
1153                                  s3info[i].info.compat.bottom,
1154                                  s3info[i].info.compat.top);
1155
1156                         /* MAC compat range */
1157                         if ((s3info[i].info.compat.role == 1) &&
1158                             (s3info[i].info.compat.id == 2)) {
1159                                 if (s3info[i].info.compat.variant !=
1160                                     macid.variant) {
1161                                         result = 2;
1162                                 }
1163                         }
1164
1165                         /* PRI compat range */
1166                         if ((s3info[i].info.compat.role == 1) &&
1167                             (s3info[i].info.compat.id == 3)) {
1168                                 if ((s3info[i].info.compat.bottom > priid.top)
1169                                     || (s3info[i].info.compat.top <
1170                                         priid.bottom)) {
1171                                         result = 3;
1172                                 }
1173                         }
1174                         /* SEC compat range */
1175                         if ((s3info[i].info.compat.role == 1) &&
1176                             (s3info[i].info.compat.id == 4)) {
1177                                 /* FIXME: isn't something missing here? */
1178                         }
1179
1180                         break;
1181                 case 3:
1182                         pr_debug("Seq: %#x\n", s3info[i].info.buildseq);
1183
1184                         break;
1185                 case 4:
1186                         pr_debug("Platform:  ID %#x %d.%d.%d\n",
1187                                  s3info[i].info.version.id,
1188                                  s3info[i].info.version.major,
1189                                  s3info[i].info.version.minor,
1190                                  s3info[i].info.version.variant);
1191
1192                         if (nicid.id != s3info[i].info.version.id)
1193                                 continue;
1194                         if (nicid.major != s3info[i].info.version.major)
1195                                 continue;
1196                         if (nicid.minor != s3info[i].info.version.minor)
1197                                 continue;
1198                         if ((nicid.variant != s3info[i].info.version.variant) &&
1199                             (nicid.id != 0x8008))
1200                                 continue;
1201
1202                         trump = 1;
1203                         break;
1204                 case 0x8001:
1205                         pr_debug("name inforec len %d\n", s3info[i].len);
1206
1207                         break;
1208                 default:
1209                         pr_debug("Unknown inforec type %d\n", s3info[i].type);
1210                 }
1211         }
1212         /* walk through */
1213
1214         if (trump && (result != 2))
1215                 result = 0;
1216         return result;
1217 }