1 // SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
2 /* from src/prism2/download/prism2dl.c
3 *
4 * utility for downloading prism2 images moved into kernelspace
5 *
6 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
7 * --------------------------------------------------------------------
8 *
9 * linux-wlan
10 *
11 * The contents of this file are subject to the Mozilla Public
12 * License Version 1.1 (the "License"); you may not use this file
13 * except in compliance with the License. You may obtain a copy of
14 * the License at http://www.mozilla.org/MPL/
15 *
16 * Software distributed under the License is distributed on an "AS
17 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
18 * implied. See the License for the specific language governing
19 * rights and limitations under the License.
20 *
21 * Alternatively, the contents of this file may be used under the
22 * terms of the GNU Public License version 2 (the "GPL"), in which
23 * case the provisions of the GPL are applicable instead of the
24 * above. If you wish to allow the use of your version of this file
25 * only under the terms of the GPL and not to allow others to use
26 * your version of this file under the MPL, indicate your decision
27 * by deleting the provisions above and replace them with the notice
28 * and other provisions required by the GPL. If you do not delete
29 * the provisions above, a recipient may use your version of this
30 * file under either the MPL or the GPL.
31 *
32 * --------------------------------------------------------------------
33 *
34 * Inquiries regarding the linux-wlan Open Source project can be
35 * made directly to:
36 *
37 * AbsoluteValue Systems Inc.
38 * info@linux-wlan.com
39 * http://www.linux-wlan.com
40 *
41 * --------------------------------------------------------------------
42 *
43 * Portions of the development of this software were funded by
44 * Intersil Corporation as part of PRISM(R) chipset product development.
45 *
46 * --------------------------------------------------------------------
47 */
48
49 /*================================================================*/
50 /* System Includes */
51 #include <linux/ihex.h>
52 #include <linux/slab.h>
53
54 /*================================================================*/
55 /* Local Constants */
56
57 #define PRISM2_USB_FWFILE "prism2_ru.fw"
58 MODULE_FIRMWARE(PRISM2_USB_FWFILE);
59
60 #define S3DATA_MAX 5000
61 #define S3PLUG_MAX 200
62 #define S3CRC_MAX 200
63 #define S3INFO_MAX 50
64
65 #define S3ADDR_PLUG (0xff000000UL)
66 #define S3ADDR_CRC (0xff100000UL)
67 #define S3ADDR_INFO (0xff200000UL)
68 #define S3ADDR_START (0xff400000UL)
69
70 #define CHUNKS_MAX 100
71
72 #define WRITESIZE_MAX 4096
73
74 /*================================================================*/
75 /* Local Types */
76
77 struct s3datarec {
78 u32 len;
79 u32 addr;
80 u8 checksum;
81 u8 *data;
82 };
83
84 struct s3plugrec {
85 u32 itemcode;
86 u32 addr;
87 u32 len;
88 };
89
90 struct s3crcrec {
91 u32 addr;
92 u32 len;
93 unsigned int dowrite;
94 };
95
96 struct s3inforec {
97 u16 len;
98 u16 type;
99 union {
100 struct hfa384x_compident version;
101 struct hfa384x_caplevel compat;
102 u16 buildseq;
103 struct hfa384x_compident platform;
104 } info;
105 };
106
107 struct pda {
108 u8 buf[HFA384x_PDA_LEN_MAX];
109 struct hfa384x_pdrec *rec[HFA384x_PDA_RECS_MAX];
110 unsigned int nrec;
111 };
112
113 struct imgchunk {
114 u32 addr; /* start address */
115 u32 len; /* in bytes */
116 u16 crc; /* CRC value (if it falls at a chunk boundary) */
117 u8 *data;
118 };
119
120 /*================================================================*/
121 /* Local Static Definitions */
122
123 /*----------------------------------------------------------------*/
124 /* s-record image processing */
125
126 /* Data records */
127 static unsigned int ns3data;
128 static struct s3datarec *s3data;
129
130 /* Plug records */
131 static unsigned int ns3plug;
132 static struct s3plugrec s3plug[S3PLUG_MAX];
133
134 /* CRC records */
135 static unsigned int ns3crc;
136 static struct s3crcrec s3crc[S3CRC_MAX];
137
138 /* Info records */
139 static unsigned int ns3info;
140 static struct s3inforec s3info[S3INFO_MAX];
141
142 /* S7 record (there _better_ be only one) */
143 static u32 startaddr;
144
145 /* Load image chunks */
146 static unsigned int nfchunks;
147 static struct imgchunk fchunk[CHUNKS_MAX];
148
149 /* Note that for the following pdrec_t arrays, the len and code */
150 /* fields are stored in HOST byte order. The mkpdrlist() function */
151 /* does the conversion. */
152 /*----------------------------------------------------------------*/
153 /* PDA, built from [card|newfile]+[addfile1+addfile2...] */
154
155 static struct pda pda;
156 static struct hfa384x_compident nicid;
157 static struct hfa384x_caplevel rfid;
158 static struct hfa384x_caplevel macid;
159 static struct hfa384x_caplevel priid;
160
161 /*================================================================*/
162 /* Local Function Declarations */
163
164 static int prism2_fwapply(const struct ihex_binrec *rfptr,
165 struct wlandevice *wlandev);
166
167 static int read_fwfile(const struct ihex_binrec *rfptr);
168
169 static int mkimage(struct imgchunk *clist, unsigned int *ccnt);
170
171 static int read_cardpda(struct pda *pda, struct wlandevice *wlandev);
172
173 static int mkpdrlist(struct pda *pda);
174
175 static int plugimage(struct imgchunk *fchunk, unsigned int nfchunks,
176 struct s3plugrec *s3plug, unsigned int ns3plug,
177 struct pda *pda);
178
179 static int crcimage(struct imgchunk *fchunk, unsigned int nfchunks,
180 struct s3crcrec *s3crc, unsigned int ns3crc);
181
182 static int writeimage(struct wlandevice *wlandev, struct imgchunk *fchunk,
183 unsigned int nfchunks);
184
185 static void free_chunks(struct imgchunk *fchunk, unsigned int *nfchunks);
186
187 static void free_srecs(void);
188
189 static int validate_identity(void);
190
191 /*================================================================*/
192 /* Function Definitions */
193
194 /*----------------------------------------------------------------
195 * prism2_fwtry
196 *
197 * Try and get firmware into memory
198 *
199 * Arguments:
200 * udev usb device structure
201 * wlandev wlan device structure
202 *
203 * Returns:
204 * 0 - success
205 * ~0 - failure
206 *----------------------------------------------------------------
207 */
prism2_fwtry(struct usb_device * udev,struct wlandevice * wlandev)208 static int prism2_fwtry(struct usb_device *udev, struct wlandevice *wlandev)
209 {
210 const struct firmware *fw_entry = NULL;
211
212 netdev_info(wlandev->netdev, "prism2_usb: Checking for firmware %s\n",
213 PRISM2_USB_FWFILE);
214 if (request_ihex_firmware(&fw_entry,
215 PRISM2_USB_FWFILE, &udev->dev) != 0) {
216 netdev_info(wlandev->netdev,
217 "prism2_usb: Firmware not available, but not essential\n");
218 netdev_info(wlandev->netdev,
219 "prism2_usb: can continue to use card anyway.\n");
220 return 1;
221 }
222
223 netdev_info(wlandev->netdev,
224 "prism2_usb: %s will be processed, size %zu\n",
225 PRISM2_USB_FWFILE, fw_entry->size);
226 prism2_fwapply((const struct ihex_binrec *)fw_entry->data, wlandev);
227
228 release_firmware(fw_entry);
229 return 0;
230 }
231
232 /*----------------------------------------------------------------
233 * prism2_fwapply
234 *
235 * Apply the firmware loaded into memory
236 *
237 * Arguments:
238 * rfptr firmware image in kernel memory
239 * wlandev device
240 *
241 * Returns:
242 * 0 - success
243 * ~0 - failure
244 *----------------------------------------------------------------
245 */
prism2_fwapply(const struct ihex_binrec * rfptr,struct wlandevice * wlandev)246 static int prism2_fwapply(const struct ihex_binrec *rfptr,
247 struct wlandevice *wlandev)
248 {
249 signed int result = 0;
250 struct p80211msg_dot11req_mibget getmsg;
251 struct p80211itemd *item;
252 u32 *data;
253
254 /* Initialize the data structures */
255 ns3data = 0;
256 s3data = kcalloc(S3DATA_MAX, sizeof(*s3data), GFP_KERNEL);
257 if (!s3data) {
258 result = -ENOMEM;
259 goto out;
260 }
261
262 ns3plug = 0;
263 memset(s3plug, 0, sizeof(s3plug));
264 ns3crc = 0;
265 memset(s3crc, 0, sizeof(s3crc));
266 ns3info = 0;
267 memset(s3info, 0, sizeof(s3info));
268 startaddr = 0;
269
270 nfchunks = 0;
271 memset(fchunk, 0, sizeof(fchunk));
272 memset(&nicid, 0, sizeof(nicid));
273 memset(&rfid, 0, sizeof(rfid));
274 memset(&macid, 0, sizeof(macid));
275 memset(&priid, 0, sizeof(priid));
276
277 /* clear the pda and add an initial END record */
278 memset(&pda, 0, sizeof(pda));
279 pda.rec[0] = (struct hfa384x_pdrec *)pda.buf;
280 pda.rec[0]->len = cpu_to_le16(2); /* len in words */
281 pda.rec[0]->code = cpu_to_le16(HFA384x_PDR_END_OF_PDA);
282 pda.nrec = 1;
283
284 /*-----------------------------------------------------*/
285 /* Put card into fwload state */
286 prism2sta_ifstate(wlandev, P80211ENUM_ifstate_fwload);
287
288 /* Build the PDA we're going to use. */
289 if (read_cardpda(&pda, wlandev)) {
290 netdev_err(wlandev->netdev, "load_cardpda failed, exiting.\n");
291 result = 1;
292 goto out;
293 }
294
295 /* read the card's PRI-SUP */
296 memset(&getmsg, 0, sizeof(getmsg));
297 getmsg.msgcode = DIDMSG_DOT11REQ_MIBGET;
298 getmsg.msglen = sizeof(getmsg);
299 strscpy(getmsg.devname, wlandev->name, sizeof(getmsg.devname));
300
301 getmsg.mibattribute.did = DIDMSG_DOT11REQ_MIBGET_MIBATTRIBUTE;
302 getmsg.mibattribute.status = P80211ENUM_msgitem_status_data_ok;
303 getmsg.resultcode.did = DIDMSG_DOT11REQ_MIBGET_RESULTCODE;
304 getmsg.resultcode.status = P80211ENUM_msgitem_status_no_value;
305
306 item = (struct p80211itemd *)getmsg.mibattribute.data;
307 item->did = DIDMIB_P2_NIC_PRISUPRANGE;
308 item->status = P80211ENUM_msgitem_status_no_value;
309
310 data = (u32 *)item->data;
311
312 /* DIDmsg_dot11req_mibget */
313 prism2mgmt_mibset_mibget(wlandev, &getmsg);
314 if (getmsg.resultcode.data != P80211ENUM_resultcode_success)
315 netdev_err(wlandev->netdev, "Couldn't fetch PRI-SUP info\n");
316
317 /* Already in host order */
318 priid.role = *data++;
319 priid.id = *data++;
320 priid.variant = *data++;
321 priid.bottom = *data++;
322 priid.top = *data++;
323
324 /* Read the S3 file */
325 result = read_fwfile(rfptr);
326 if (result) {
327 netdev_err(wlandev->netdev,
328 "Failed to read the data exiting.\n");
329 goto out;
330 }
331
332 result = validate_identity();
333 if (result) {
334 netdev_err(wlandev->netdev, "Incompatible firmware image.\n");
335 goto out;
336 }
337
338 if (startaddr == 0x00000000) {
339 netdev_err(wlandev->netdev,
340 "Can't RAM download a Flash image!\n");
341 result = 1;
342 goto out;
343 }
344
345 /* Make the image chunks */
346 result = mkimage(fchunk, &nfchunks);
347 if (result) {
348 netdev_err(wlandev->netdev, "Failed to make image chunk.\n");
349 goto free_chunks;
350 }
351
352 /* Do any plugging */
353 result = plugimage(fchunk, nfchunks, s3plug, ns3plug, &pda);
354 if (result) {
355 netdev_err(wlandev->netdev, "Failed to plug data.\n");
356 goto free_chunks;
357 }
358
359 /* Insert any CRCs */
360 result = crcimage(fchunk, nfchunks, s3crc, ns3crc);
361 if (result) {
362 netdev_err(wlandev->netdev, "Failed to insert all CRCs\n");
363 goto free_chunks;
364 }
365
366 /* Write the image */
367 result = writeimage(wlandev, fchunk, nfchunks);
368 if (result) {
369 netdev_err(wlandev->netdev, "Failed to ramwrite image data.\n");
370 goto free_chunks;
371 }
372
373 netdev_info(wlandev->netdev, "prism2_usb: firmware loading finished.\n");
374
375 free_chunks:
376 /* clear any allocated memory */
377 free_chunks(fchunk, &nfchunks);
378 free_srecs();
379
380 out:
381 return result;
382 }
383
384 /*----------------------------------------------------------------
385 * crcimage
386 *
387 * Adds a CRC16 in the two bytes prior to each block identified by
388 * an S3 CRC record. Currently, we don't actually do a CRC we just
389 * insert the value 0xC0DE in hfa384x order.
390 *
391 * Arguments:
392 * fchunk Array of image chunks
393 * nfchunks Number of image chunks
394 * s3crc Array of crc records
395 * ns3crc Number of crc records
396 *
397 * Returns:
398 * 0 success
399 * ~0 failure
400 *----------------------------------------------------------------
401 */
crcimage(struct imgchunk * fchunk,unsigned int nfchunks,struct s3crcrec * s3crc,unsigned int ns3crc)402 static int crcimage(struct imgchunk *fchunk, unsigned int nfchunks,
403 struct s3crcrec *s3crc, unsigned int ns3crc)
404 {
405 int result = 0;
406 int i;
407 int c;
408 u32 crcstart;
409 u32 cstart = 0;
410 u32 cend;
411 u8 *dest;
412 u32 chunkoff;
413
414 for (i = 0; i < ns3crc; i++) {
415 if (!s3crc[i].dowrite)
416 continue;
417 crcstart = s3crc[i].addr;
418 /* Find chunk */
419 for (c = 0; c < nfchunks; c++) {
420 cstart = fchunk[c].addr;
421 cend = fchunk[c].addr + fchunk[c].len;
422 /* the line below does an address & len match search */
423 /* unfortunately, I've found that the len fields of */
424 /* some crc records don't match with the length of */
425 /* the actual data, so we're not checking right now */
426 /* if (crcstart-2 >= cstart && crcend <= cend) break; */
427
428 /* note the -2 below, it's to make sure the chunk has */
429 /* space for the CRC value */
430 if (crcstart - 2 >= cstart && crcstart < cend)
431 break;
432 }
433 if (c >= nfchunks) {
434 pr_err("Failed to find chunk for crcrec[%d], addr=0x%06x len=%d , aborting crc.\n",
435 i, s3crc[i].addr, s3crc[i].len);
436 return 1;
437 }
438
439 /* Insert crc */
440 pr_debug("Adding crc @ 0x%06x\n", s3crc[i].addr - 2);
441 chunkoff = crcstart - cstart - 2;
442 dest = fchunk[c].data + chunkoff;
443 *dest = 0xde;
444 *(dest + 1) = 0xc0;
445 }
446 return result;
447 }
448
449 /*----------------------------------------------------------------
450 * free_chunks
451 *
452 * Clears the chunklist data structures in preparation for a new file.
453 *
454 * Arguments:
455 * none
456 *
457 * Returns:
458 * nothing
459 *----------------------------------------------------------------
460 */
free_chunks(struct imgchunk * fchunk,unsigned int * nfchunks)461 static void free_chunks(struct imgchunk *fchunk, unsigned int *nfchunks)
462 {
463 int i;
464
465 for (i = 0; i < *nfchunks; i++)
466 kfree(fchunk[i].data);
467
468 *nfchunks = 0;
469 memset(fchunk, 0, sizeof(*fchunk));
470 }
471
472 /*----------------------------------------------------------------
473 * free_srecs
474 *
475 * Clears the srec data structures in preparation for a new file.
476 *
477 * Arguments:
478 * none
479 *
480 * Returns:
481 * nothing
482 *----------------------------------------------------------------
483 */
free_srecs(void)484 static void free_srecs(void)
485 {
486 ns3data = 0;
487 kfree(s3data);
488 ns3plug = 0;
489 memset(s3plug, 0, sizeof(s3plug));
490 ns3crc = 0;
491 memset(s3crc, 0, sizeof(s3crc));
492 ns3info = 0;
493 memset(s3info, 0, sizeof(s3info));
494 startaddr = 0;
495 }
496
497 /*----------------------------------------------------------------
498 * mkimage
499 *
500 * Scans the currently loaded set of S records for data residing
501 * in contiguous memory regions. Each contiguous region is then
502 * made into a 'chunk'. This function assumes that we're building
503 * a new chunk list. Assumes the s3data items are in sorted order.
504 *
505 * Arguments: none
506 *
507 * Returns:
508 * 0 - success
509 * ~0 - failure (probably an errno)
510 *----------------------------------------------------------------
511 */
mkimage(struct imgchunk * clist,unsigned int * ccnt)512 static int mkimage(struct imgchunk *clist, unsigned int *ccnt)
513 {
514 int result = 0;
515 int i;
516 int j;
517 int currchunk = 0;
518 u32 nextaddr = 0;
519 u32 s3start;
520 u32 s3end;
521 u32 cstart = 0;
522 u32 cend;
523 u32 coffset;
524
525 /* There may already be data in the chunklist */
526 *ccnt = 0;
527
528 /* Establish the location and size of each chunk */
529 for (i = 0; i < ns3data; i++) {
530 if (s3data[i].addr == nextaddr) {
531 /* existing chunk, grow it */
532 clist[currchunk].len += s3data[i].len;
533 nextaddr += s3data[i].len;
534 } else {
535 /* New chunk */
536 (*ccnt)++;
537 currchunk = *ccnt - 1;
538 clist[currchunk].addr = s3data[i].addr;
539 clist[currchunk].len = s3data[i].len;
540 nextaddr = s3data[i].addr + s3data[i].len;
541 /* Expand the chunk if there is a CRC record at */
542 /* their beginning bound */
543 for (j = 0; j < ns3crc; j++) {
544 if (s3crc[j].dowrite &&
545 s3crc[j].addr == clist[currchunk].addr) {
546 clist[currchunk].addr -= 2;
547 clist[currchunk].len += 2;
548 }
549 }
550 }
551 }
552
553 /* We're currently assuming there aren't any overlapping chunks */
554 /* if this proves false, we'll need to add code to coalesce. */
555
556 /* Allocate buffer space for chunks */
557 for (i = 0; i < *ccnt; i++) {
558 clist[i].data = kzalloc(clist[i].len, GFP_KERNEL);
559 if (!clist[i].data)
560 return 1;
561
562 pr_debug("chunk[%d]: addr=0x%06x len=%d\n",
563 i, clist[i].addr, clist[i].len);
564 }
565
566 /* Copy srec data to chunks */
567 for (i = 0; i < ns3data; i++) {
568 s3start = s3data[i].addr;
569 s3end = s3start + s3data[i].len - 1;
570 for (j = 0; j < *ccnt; j++) {
571 cstart = clist[j].addr;
572 cend = cstart + clist[j].len - 1;
573 if (s3start >= cstart && s3end <= cend)
574 break;
575 }
576 if (((unsigned int)j) >= (*ccnt)) {
577 pr_err("s3rec(a=0x%06x,l=%d), no chunk match, exiting.\n",
578 s3start, s3data[i].len);
579 return 1;
580 }
581 coffset = s3start - cstart;
582 memcpy(clist[j].data + coffset, s3data[i].data, s3data[i].len);
583 }
584
585 return result;
586 }
587
588 /*----------------------------------------------------------------
589 * mkpdrlist
590 *
591 * Reads a raw PDA and builds an array of pdrec_t structures.
592 *
593 * Arguments:
594 * pda buffer containing raw PDA bytes
595 * pdrec ptr to an array of pdrec_t's. Will be filled on exit.
596 * nrec ptr to a variable that will contain the count of PDRs
597 *
598 * Returns:
599 * 0 - success
600 * ~0 - failure (probably an errno)
601 *----------------------------------------------------------------
602 */
mkpdrlist(struct pda * pda)603 static int mkpdrlist(struct pda *pda)
604 {
605 __le16 *pda16 = (__le16 *)pda->buf;
606 int curroff; /* in 'words' */
607
608 pda->nrec = 0;
609 curroff = 0;
610 while (curroff < (HFA384x_PDA_LEN_MAX / 2 - 1) &&
611 le16_to_cpu(pda16[curroff + 1]) != HFA384x_PDR_END_OF_PDA) {
612 pda->rec[pda->nrec] = (struct hfa384x_pdrec *)&pda16[curroff];
613
614 if (le16_to_cpu(pda->rec[pda->nrec]->code) ==
615 HFA384x_PDR_NICID) {
616 memcpy(&nicid, &pda->rec[pda->nrec]->data.nicid,
617 sizeof(nicid));
618 le16_to_cpus(&nicid.id);
619 le16_to_cpus(&nicid.variant);
620 le16_to_cpus(&nicid.major);
621 le16_to_cpus(&nicid.minor);
622 }
623 if (le16_to_cpu(pda->rec[pda->nrec]->code) ==
624 HFA384x_PDR_MFISUPRANGE) {
625 memcpy(&rfid, &pda->rec[pda->nrec]->data.mfisuprange,
626 sizeof(rfid));
627 le16_to_cpus(&rfid.id);
628 le16_to_cpus(&rfid.variant);
629 le16_to_cpus(&rfid.bottom);
630 le16_to_cpus(&rfid.top);
631 }
632 if (le16_to_cpu(pda->rec[pda->nrec]->code) ==
633 HFA384x_PDR_CFISUPRANGE) {
634 memcpy(&macid, &pda->rec[pda->nrec]->data.cfisuprange,
635 sizeof(macid));
636 le16_to_cpus(&macid.id);
637 le16_to_cpus(&macid.variant);
638 le16_to_cpus(&macid.bottom);
639 le16_to_cpus(&macid.top);
640 }
641
642 (pda->nrec)++;
643 curroff += le16_to_cpu(pda16[curroff]) + 1;
644 }
645 if (curroff >= (HFA384x_PDA_LEN_MAX / 2 - 1)) {
646 pr_err("no end record found or invalid lengths in PDR data, exiting. %x %d\n",
647 curroff, pda->nrec);
648 return 1;
649 }
650 pda->rec[pda->nrec] = (struct hfa384x_pdrec *)&pda16[curroff];
651 (pda->nrec)++;
652 return 0;
653 }
654
655 /*----------------------------------------------------------------
656 * plugimage
657 *
658 * Plugs the given image using the given plug records from the given
659 * PDA and filename.
660 *
661 * Arguments:
662 * fchunk Array of image chunks
663 * nfchunks Number of image chunks
664 * s3plug Array of plug records
665 * ns3plug Number of plug records
666 * pda Current pda data
667 *
668 * Returns:
669 * 0 success
670 * ~0 failure
671 *----------------------------------------------------------------
672 */
plugimage(struct imgchunk * fchunk,unsigned int nfchunks,struct s3plugrec * s3plug,unsigned int ns3plug,struct pda * pda)673 static int plugimage(struct imgchunk *fchunk, unsigned int nfchunks,
674 struct s3plugrec *s3plug, unsigned int ns3plug,
675 struct pda *pda)
676 {
677 int result = 0;
678 int i; /* plug index */
679 int j; /* index of PDR or -1 if fname plug */
680 int c; /* chunk index */
681 u32 pstart;
682 u32 pend;
683 u32 cstart = 0;
684 u32 cend;
685 u32 chunkoff;
686 u8 *dest;
687
688 /* for each plug record */
689 for (i = 0; i < ns3plug; i++) {
690 pstart = s3plug[i].addr;
691 pend = s3plug[i].addr + s3plug[i].len;
692 /* find the matching PDR (or filename) */
693 if (s3plug[i].itemcode != 0xffffffffUL) { /* not filename */
694 for (j = 0; j < pda->nrec; j++) {
695 if (s3plug[i].itemcode ==
696 le16_to_cpu(pda->rec[j]->code))
697 break;
698 }
699 } else {
700 j = -1;
701 }
702 if (j >= pda->nrec && j != -1) { /* if no matching PDR, fail */
703 pr_warn("warning: Failed to find PDR for plugrec 0x%04x.\n",
704 s3plug[i].itemcode);
705 continue; /* and move on to the next PDR */
706
707 /* MSM: They swear that unless it's the MAC address,
708 * the serial number, or the TX calibration records,
709 * then there's reasonable defaults in the f/w
710 * image. Therefore, missing PDRs in the card
711 * should only be a warning, not fatal.
712 * TODO: add fatals for the PDRs mentioned above.
713 */
714 }
715
716 /* Validate plug len against PDR len */
717 if (j != -1 && s3plug[i].len < le16_to_cpu(pda->rec[j]->len)) {
718 pr_err("error: Plug vs. PDR len mismatch for plugrec 0x%04x, abort plugging.\n",
719 s3plug[i].itemcode);
720 result = 1;
721 continue;
722 }
723
724 /*
725 * Validate plug address against
726 * chunk data and identify chunk
727 */
728 for (c = 0; c < nfchunks; c++) {
729 cstart = fchunk[c].addr;
730 cend = fchunk[c].addr + fchunk[c].len;
731 if (pstart >= cstart && pend <= cend)
732 break;
733 }
734 if (c >= nfchunks) {
735 pr_err("error: Failed to find image chunk for plugrec 0x%04x.\n",
736 s3plug[i].itemcode);
737 result = 1;
738 continue;
739 }
740
741 /* Plug data */
742 chunkoff = pstart - cstart;
743 dest = fchunk[c].data + chunkoff;
744 pr_debug("Plugging item 0x%04x @ 0x%06x, len=%d, cnum=%d coff=0x%06x\n",
745 s3plug[i].itemcode, pstart, s3plug[i].len,
746 c, chunkoff);
747
748 if (j == -1) { /* plug the filename */
749 memset(dest, 0, s3plug[i].len);
750 strncpy(dest, PRISM2_USB_FWFILE, s3plug[i].len - 1);
751 } else { /* plug a PDR */
752 memcpy(dest, &pda->rec[j]->data, s3plug[i].len);
753 }
754 }
755 return result;
756 }
757
758 /*----------------------------------------------------------------
759 * read_cardpda
760 *
761 * Sends the command for the driver to read the pda from the card
762 * named in the device variable. Upon success, the card pda is
763 * stored in the "cardpda" variables. Note that the pda structure
764 * is considered 'well formed' after this function. That means
765 * that the nrecs is valid, the rec array has been set up, and there's
766 * a valid PDAEND record in the raw PDA data.
767 *
768 * Arguments:
769 * pda pda structure
770 * wlandev device
771 *
772 * Returns:
773 * 0 - success
774 * ~0 - failure (probably an errno)
775 *----------------------------------------------------------------
776 */
read_cardpda(struct pda * pda,struct wlandevice * wlandev)777 static int read_cardpda(struct pda *pda, struct wlandevice *wlandev)
778 {
779 int result = 0;
780 struct p80211msg_p2req_readpda *msg;
781
782 msg = kzalloc(sizeof(*msg), GFP_KERNEL);
783 if (!msg)
784 return -ENOMEM;
785
786 /* set up the msg */
787 msg->msgcode = DIDMSG_P2REQ_READPDA;
788 msg->msglen = sizeof(msg);
789 strscpy(msg->devname, wlandev->name, sizeof(msg->devname));
790 msg->pda.did = DIDMSG_P2REQ_READPDA_PDA;
791 msg->pda.len = HFA384x_PDA_LEN_MAX;
792 msg->pda.status = P80211ENUM_msgitem_status_no_value;
793 msg->resultcode.did = DIDMSG_P2REQ_READPDA_RESULTCODE;
794 msg->resultcode.len = sizeof(u32);
795 msg->resultcode.status = P80211ENUM_msgitem_status_no_value;
796
797 if (prism2mgmt_readpda(wlandev, msg) != 0) {
798 /* prism2mgmt_readpda prints an errno if appropriate */
799 result = -1;
800 } else if (msg->resultcode.data == P80211ENUM_resultcode_success) {
801 memcpy(pda->buf, msg->pda.data, HFA384x_PDA_LEN_MAX);
802 result = mkpdrlist(pda);
803 } else {
804 /* resultcode must've been something other than success */
805 result = -1;
806 }
807
808 kfree(msg);
809 return result;
810 }
811
812 /*----------------------------------------------------------------
813 * read_fwfile
814 *
815 * Reads the given fw file which should have been compiled from an srec
816 * file. Each record in the fw file will either be a plain data record,
817 * a start address record, or other records used for plugging.
818 *
819 * Note that data records are expected to be sorted into
820 * ascending address order in the fw file.
821 *
822 * Note also that the start address record, originally an S7 record in
823 * the srec file, is expected in the fw file to be like a data record but
824 * with a certain address to make it identifiable.
825 *
826 * Here's the SREC format that the fw should have come from:
827 * S[37]nnaaaaaaaaddd...dddcc
828 *
829 * nn - number of bytes starting with the address field
830 * aaaaaaaa - address in readable (or big endian) format
831 * dd....dd - 0-245 data bytes (two chars per byte)
832 * cc - checksum
833 *
834 * The S7 record's (there should be only one) address value gets
835 * converted to an S3 record with address of 0xff400000, with the
836 * start address being stored as a 4 byte data word. That address is
837 * the start execution address used for RAM downloads.
838 *
839 * The S3 records have a collection of subformats indicated by the
840 * value of aaaaaaaa:
841 * 0xff000000 - Plug record, data field format:
842 * xxxxxxxxaaaaaaaassssssss
843 * x - PDR code number (little endian)
844 * a - Address in load image to plug (little endian)
845 * s - Length of plug data area (little endian)
846 *
847 * 0xff100000 - CRC16 generation record, data field format:
848 * aaaaaaaassssssssbbbbbbbb
849 * a - Start address for CRC calculation (little endian)
850 * s - Length of data to calculate over (little endian)
851 * b - Boolean, true=write crc, false=don't write
852 *
853 * 0xff200000 - Info record, data field format:
854 * ssssttttdd..dd
855 * s - Size in words (little endian)
856 * t - Info type (little endian), see #defines and
857 * struct s3inforec for details about types.
858 * d - (s - 1) little endian words giving the contents of
859 * the given info type.
860 *
861 * 0xff400000 - Start address record, data field format:
862 * aaaaaaaa
863 * a - Address in load image to plug (little endian)
864 *
865 * Arguments:
866 * record firmware image (ihex record structure) in kernel memory
867 *
868 * Returns:
869 * 0 - success
870 * ~0 - failure (probably an errno)
871 *----------------------------------------------------------------
872 */
read_fwfile(const struct ihex_binrec * record)873 static int read_fwfile(const struct ihex_binrec *record)
874 {
875 int i;
876 int rcnt = 0;
877 u16 *tmpinfo;
878 u16 *ptr16;
879 u32 *ptr32, len, addr;
880
881 pr_debug("Reading fw file ...\n");
882
883 while (record) {
884 rcnt++;
885
886 len = be16_to_cpu(record->len);
887 addr = be32_to_cpu(record->addr);
888
889 /* Point into data for different word lengths */
890 ptr32 = (u32 *)record->data;
891 ptr16 = (u16 *)record->data;
892
893 /* parse what was an S3 srec and put it in the right array */
894 switch (addr) {
895 case S3ADDR_START:
896 startaddr = *ptr32;
897 pr_debug(" S7 start addr, record=%d addr=0x%08x\n",
898 rcnt,
899 startaddr);
900 break;
901 case S3ADDR_PLUG:
902 s3plug[ns3plug].itemcode = *ptr32;
903 s3plug[ns3plug].addr = *(ptr32 + 1);
904 s3plug[ns3plug].len = *(ptr32 + 2);
905
906 pr_debug(" S3 plugrec, record=%d itemcode=0x%08x addr=0x%08x len=%d\n",
907 rcnt,
908 s3plug[ns3plug].itemcode,
909 s3plug[ns3plug].addr,
910 s3plug[ns3plug].len);
911
912 ns3plug++;
913 if (ns3plug == S3PLUG_MAX) {
914 pr_err("S3 plugrec limit reached - aborting\n");
915 return 1;
916 }
917 break;
918 case S3ADDR_CRC:
919 s3crc[ns3crc].addr = *ptr32;
920 s3crc[ns3crc].len = *(ptr32 + 1);
921 s3crc[ns3crc].dowrite = *(ptr32 + 2);
922
923 pr_debug(" S3 crcrec, record=%d addr=0x%08x len=%d write=0x%08x\n",
924 rcnt,
925 s3crc[ns3crc].addr,
926 s3crc[ns3crc].len,
927 s3crc[ns3crc].dowrite);
928 ns3crc++;
929 if (ns3crc == S3CRC_MAX) {
930 pr_err("S3 crcrec limit reached - aborting\n");
931 return 1;
932 }
933 break;
934 case S3ADDR_INFO:
935 s3info[ns3info].len = *ptr16;
936 s3info[ns3info].type = *(ptr16 + 1);
937
938 pr_debug(" S3 inforec, record=%d len=0x%04x type=0x%04x\n",
939 rcnt,
940 s3info[ns3info].len,
941 s3info[ns3info].type);
942 if (((s3info[ns3info].len - 1) * sizeof(u16)) >
943 sizeof(s3info[ns3info].info)) {
944 pr_err("S3 inforec length too long - aborting\n");
945 return 1;
946 }
947
948 tmpinfo = (u16 *)&s3info[ns3info].info.version;
949 pr_debug(" info=");
950 for (i = 0; i < s3info[ns3info].len - 1; i++) {
951 tmpinfo[i] = *(ptr16 + 2 + i);
952 pr_debug("%04x ", tmpinfo[i]);
953 }
954 pr_debug("\n");
955
956 ns3info++;
957 if (ns3info == S3INFO_MAX) {
958 pr_err("S3 inforec limit reached - aborting\n");
959 return 1;
960 }
961 break;
962 default: /* Data record */
963 s3data[ns3data].addr = addr;
964 s3data[ns3data].len = len;
965 s3data[ns3data].data = (uint8_t *)record->data;
966 ns3data++;
967 if (ns3data == S3DATA_MAX) {
968 pr_err("S3 datarec limit reached - aborting\n");
969 return 1;
970 }
971 break;
972 }
973 record = ihex_next_binrec(record);
974 }
975 return 0;
976 }
977
978 /*----------------------------------------------------------------
979 * writeimage
980 *
981 * Takes the chunks, builds p80211 messages and sends them down
982 * to the driver for writing to the card.
983 *
984 * Arguments:
985 * wlandev device
986 * fchunk Array of image chunks
987 * nfchunks Number of image chunks
988 *
989 * Returns:
990 * 0 success
991 * ~0 failure
992 *----------------------------------------------------------------
993 */
writeimage(struct wlandevice * wlandev,struct imgchunk * fchunk,unsigned int nfchunks)994 static int writeimage(struct wlandevice *wlandev, struct imgchunk *fchunk,
995 unsigned int nfchunks)
996 {
997 int result = 0;
998 struct p80211msg_p2req_ramdl_state *rstmsg;
999 struct p80211msg_p2req_ramdl_write *rwrmsg;
1000 u32 resultcode;
1001 int i;
1002 int j;
1003 unsigned int nwrites;
1004 u32 curroff;
1005 u32 currlen;
1006 u32 currdaddr;
1007
1008 rstmsg = kzalloc(sizeof(*rstmsg), GFP_KERNEL);
1009 rwrmsg = kzalloc(sizeof(*rwrmsg), GFP_KERNEL);
1010 if (!rstmsg || !rwrmsg) {
1011 kfree(rstmsg);
1012 kfree(rwrmsg);
1013 netdev_err(wlandev->netdev,
1014 "%s: no memory for firmware download, aborting download\n",
1015 __func__);
1016 return -ENOMEM;
1017 }
1018
1019 /* Initialize the messages */
1020 strscpy(rstmsg->devname, wlandev->name, sizeof(rstmsg->devname));
1021 rstmsg->msgcode = DIDMSG_P2REQ_RAMDL_STATE;
1022 rstmsg->msglen = sizeof(*rstmsg);
1023 rstmsg->enable.did = DIDMSG_P2REQ_RAMDL_STATE_ENABLE;
1024 rstmsg->exeaddr.did = DIDMSG_P2REQ_RAMDL_STATE_EXEADDR;
1025 rstmsg->resultcode.did = DIDMSG_P2REQ_RAMDL_STATE_RESULTCODE;
1026 rstmsg->enable.status = P80211ENUM_msgitem_status_data_ok;
1027 rstmsg->exeaddr.status = P80211ENUM_msgitem_status_data_ok;
1028 rstmsg->resultcode.status = P80211ENUM_msgitem_status_no_value;
1029 rstmsg->enable.len = sizeof(u32);
1030 rstmsg->exeaddr.len = sizeof(u32);
1031 rstmsg->resultcode.len = sizeof(u32);
1032
1033 strscpy(rwrmsg->devname, wlandev->name, sizeof(rwrmsg->devname));
1034 rwrmsg->msgcode = DIDMSG_P2REQ_RAMDL_WRITE;
1035 rwrmsg->msglen = sizeof(*rwrmsg);
1036 rwrmsg->addr.did = DIDMSG_P2REQ_RAMDL_WRITE_ADDR;
1037 rwrmsg->len.did = DIDMSG_P2REQ_RAMDL_WRITE_LEN;
1038 rwrmsg->data.did = DIDMSG_P2REQ_RAMDL_WRITE_DATA;
1039 rwrmsg->resultcode.did = DIDMSG_P2REQ_RAMDL_WRITE_RESULTCODE;
1040 rwrmsg->addr.status = P80211ENUM_msgitem_status_data_ok;
1041 rwrmsg->len.status = P80211ENUM_msgitem_status_data_ok;
1042 rwrmsg->data.status = P80211ENUM_msgitem_status_data_ok;
1043 rwrmsg->resultcode.status = P80211ENUM_msgitem_status_no_value;
1044 rwrmsg->addr.len = sizeof(u32);
1045 rwrmsg->len.len = sizeof(u32);
1046 rwrmsg->data.len = WRITESIZE_MAX;
1047 rwrmsg->resultcode.len = sizeof(u32);
1048
1049 /* Send xxx_state(enable) */
1050 pr_debug("Sending dl_state(enable) message.\n");
1051 rstmsg->enable.data = P80211ENUM_truth_true;
1052 rstmsg->exeaddr.data = startaddr;
1053
1054 result = prism2mgmt_ramdl_state(wlandev, rstmsg);
1055 if (result) {
1056 netdev_err(wlandev->netdev,
1057 "%s state enable failed w/ result=%d, aborting download\n",
1058 __func__, result);
1059 goto free_result;
1060 }
1061 resultcode = rstmsg->resultcode.data;
1062 if (resultcode != P80211ENUM_resultcode_success) {
1063 netdev_err(wlandev->netdev,
1064 "%s()->xxxdl_state msg indicates failure, w/ resultcode=%d, aborting download.\n",
1065 __func__, resultcode);
1066 result = 1;
1067 goto free_result;
1068 }
1069
1070 /* Now, loop through the data chunks and send WRITESIZE_MAX data */
1071 for (i = 0; i < nfchunks; i++) {
1072 nwrites = fchunk[i].len / WRITESIZE_MAX;
1073 nwrites += (fchunk[i].len % WRITESIZE_MAX) ? 1 : 0;
1074 curroff = 0;
1075 for (j = 0; j < nwrites; j++) {
1076 /* TODO Move this to a separate function */
1077 int lenleft = fchunk[i].len - (WRITESIZE_MAX * j);
1078
1079 if (fchunk[i].len > WRITESIZE_MAX)
1080 currlen = WRITESIZE_MAX;
1081 else
1082 currlen = lenleft;
1083 curroff = j * WRITESIZE_MAX;
1084 currdaddr = fchunk[i].addr + curroff;
1085 /* Setup the message */
1086 rwrmsg->addr.data = currdaddr;
1087 rwrmsg->len.data = currlen;
1088 memcpy(rwrmsg->data.data,
1089 fchunk[i].data + curroff, currlen);
1090
1091 /* Send flashdl_write(pda) */
1092 pr_debug
1093 ("Sending xxxdl_write message addr=%06x len=%d.\n",
1094 currdaddr, currlen);
1095
1096 result = prism2mgmt_ramdl_write(wlandev, rwrmsg);
1097
1098 /* Check the results */
1099 if (result) {
1100 netdev_err(wlandev->netdev,
1101 "%s chunk write failed w/ result=%d, aborting download\n",
1102 __func__, result);
1103 goto free_result;
1104 }
1105 resultcode = rstmsg->resultcode.data;
1106 if (resultcode != P80211ENUM_resultcode_success) {
1107 pr_err("%s()->xxxdl_write msg indicates failure, w/ resultcode=%d, aborting download.\n",
1108 __func__, resultcode);
1109 result = 1;
1110 goto free_result;
1111 }
1112 }
1113 }
1114
1115 /* Send xxx_state(disable) */
1116 pr_debug("Sending dl_state(disable) message.\n");
1117 rstmsg->enable.data = P80211ENUM_truth_false;
1118 rstmsg->exeaddr.data = 0;
1119
1120 result = prism2mgmt_ramdl_state(wlandev, rstmsg);
1121 if (result) {
1122 netdev_err(wlandev->netdev,
1123 "%s state disable failed w/ result=%d, aborting download\n",
1124 __func__, result);
1125 goto free_result;
1126 }
1127 resultcode = rstmsg->resultcode.data;
1128 if (resultcode != P80211ENUM_resultcode_success) {
1129 netdev_err(wlandev->netdev,
1130 "%s()->xxxdl_state msg indicates failure, w/ resultcode=%d, aborting download.\n",
1131 __func__, resultcode);
1132 result = 1;
1133 goto free_result;
1134 }
1135
1136 free_result:
1137 kfree(rstmsg);
1138 kfree(rwrmsg);
1139 return result;
1140 }
1141
validate_identity(void)1142 static int validate_identity(void)
1143 {
1144 int i;
1145 int result = 1;
1146 int trump = 0;
1147
1148 pr_debug("NIC ID: %#x v%d.%d.%d\n",
1149 nicid.id, nicid.major, nicid.minor, nicid.variant);
1150 pr_debug("MFI ID: %#x v%d %d->%d\n",
1151 rfid.id, rfid.variant, rfid.bottom, rfid.top);
1152 pr_debug("CFI ID: %#x v%d %d->%d\n",
1153 macid.id, macid.variant, macid.bottom, macid.top);
1154 pr_debug("PRI ID: %#x v%d %d->%d\n",
1155 priid.id, priid.variant, priid.bottom, priid.top);
1156
1157 for (i = 0; i < ns3info; i++) {
1158 switch (s3info[i].type) {
1159 case 1:
1160 pr_debug("Version: ID %#x %d.%d.%d\n",
1161 s3info[i].info.version.id,
1162 s3info[i].info.version.major,
1163 s3info[i].info.version.minor,
1164 s3info[i].info.version.variant);
1165 break;
1166 case 2:
1167 pr_debug("Compat: Role %#x Id %#x v%d %d->%d\n",
1168 s3info[i].info.compat.role,
1169 s3info[i].info.compat.id,
1170 s3info[i].info.compat.variant,
1171 s3info[i].info.compat.bottom,
1172 s3info[i].info.compat.top);
1173
1174 /* MAC compat range */
1175 if ((s3info[i].info.compat.role == 1) &&
1176 (s3info[i].info.compat.id == 2)) {
1177 if (s3info[i].info.compat.variant !=
1178 macid.variant) {
1179 result = 2;
1180 }
1181 }
1182
1183 /* PRI compat range */
1184 if ((s3info[i].info.compat.role == 1) &&
1185 (s3info[i].info.compat.id == 3)) {
1186 if ((s3info[i].info.compat.bottom >
1187 priid.top) ||
1188 (s3info[i].info.compat.top <
1189 priid.bottom)) {
1190 result = 3;
1191 }
1192 }
1193 /* SEC compat range */
1194 if ((s3info[i].info.compat.role == 1) &&
1195 (s3info[i].info.compat.id == 4)) {
1196 /* FIXME: isn't something missing here? */
1197 }
1198
1199 break;
1200 case 3:
1201 pr_debug("Seq: %#x\n", s3info[i].info.buildseq);
1202
1203 break;
1204 case 4:
1205 pr_debug("Platform: ID %#x %d.%d.%d\n",
1206 s3info[i].info.version.id,
1207 s3info[i].info.version.major,
1208 s3info[i].info.version.minor,
1209 s3info[i].info.version.variant);
1210
1211 if (nicid.id != s3info[i].info.version.id)
1212 continue;
1213 if (nicid.major != s3info[i].info.version.major)
1214 continue;
1215 if (nicid.minor != s3info[i].info.version.minor)
1216 continue;
1217 if ((nicid.variant != s3info[i].info.version.variant) &&
1218 (nicid.id != 0x8008))
1219 continue;
1220
1221 trump = 1;
1222 break;
1223 case 0x8001:
1224 pr_debug("name inforec len %d\n", s3info[i].len);
1225
1226 break;
1227 default:
1228 pr_debug("Unknown inforec type %d\n", s3info[i].type);
1229 }
1230 }
1231 /* walk through */
1232
1233 if (trump && (result != 2))
1234 result = 0;
1235 return result;
1236 }
1237