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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  * [email protected]
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  */
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  */
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  */
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  */
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  */
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  */
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  */
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  */
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                 j = -1;
693                 /* find the matching PDR (or filename) */
694                 if (s3plug[i].itemcode != 0xffffffffUL) { /* not filename */
695                         for (j = 0; j < pda->nrec; j++) {
696                                 if (s3plug[i].itemcode ==
697                                     le16_to_cpu(pda->rec[j]->code))
698                                         break;
699                         }
700                 }
701                 if (j >= pda->nrec && j != -1) { /*  if no matching PDR, fail */
702                         pr_warn("warning: Failed to find PDR for plugrec 0x%04x.\n",
703                                 s3plug[i].itemcode);
704                         continue;       /* and move on to the next PDR */
705
706                         /* MSM: They swear that unless it's the MAC address,
707                          * the serial number, or the TX calibration records,
708                          * then there's reasonable defaults in the f/w
709                          * image.  Therefore, missing PDRs in the card
710                          * should only be a warning, not fatal.
711                          * TODO: add fatals for the PDRs mentioned above.
712                          */
713                 }
714
715                 /* Validate plug len against PDR len */
716                 if (j != -1 && s3plug[i].len < le16_to_cpu(pda->rec[j]->len)) {
717                         pr_err("error: Plug vs. PDR len mismatch for plugrec 0x%04x, abort plugging.\n",
718                                s3plug[i].itemcode);
719                         result = 1;
720                         continue;
721                 }
722
723                 /*
724                  * Validate plug address against
725                  * chunk data and identify chunk
726                  */
727                 for (c = 0; c < nfchunks; c++) {
728                         cstart = fchunk[c].addr;
729                         cend = fchunk[c].addr + fchunk[c].len;
730                         if (pstart >= cstart && pend <= cend)
731                                 break;
732                 }
733                 if (c >= nfchunks) {
734                         pr_err("error: Failed to find image chunk for plugrec 0x%04x.\n",
735                                s3plug[i].itemcode);
736                         result = 1;
737                         continue;
738                 }
739
740                 /* Plug data */
741                 chunkoff = pstart - cstart;
742                 dest = fchunk[c].data + chunkoff;
743                 pr_debug("Plugging item 0x%04x @ 0x%06x, len=%d, cnum=%d coff=0x%06x\n",
744                          s3plug[i].itemcode, pstart, s3plug[i].len,
745                          c, chunkoff);
746
747                 if (j == -1) {  /* plug the filename */
748                         memset(dest, 0, s3plug[i].len);
749                         strncpy(dest, PRISM2_USB_FWFILE, s3plug[i].len - 1);
750                 } else {        /* plug a PDR */
751                         memcpy(dest, &pda->rec[j]->data, s3plug[i].len);
752                 }
753         }
754         return result;
755 }
756
757 /*----------------------------------------------------------------
758  * read_cardpda
759  *
760  * Sends the command for the driver to read the pda from the card
761  * named in the device variable.  Upon success, the card pda is
762  * stored in the "cardpda" variables.  Note that the pda structure
763  * is considered 'well formed' after this function.  That means
764  * that the nrecs is valid, the rec array has been set up, and there's
765  * a valid PDAEND record in the raw PDA data.
766  *
767  * Arguments:
768  *      pda             pda structure
769  *      wlandev         device
770  *
771  * Returns:
772  *      0       - success
773  *      ~0      - failure (probably an errno)
774  *----------------------------------------------------------------
775  */
776 static int read_cardpda(struct pda *pda, struct wlandevice *wlandev)
777 {
778         int result = 0;
779         struct p80211msg_p2req_readpda *msg;
780
781         msg = kzalloc(sizeof(*msg), GFP_KERNEL);
782         if (!msg)
783                 return -ENOMEM;
784
785         /* set up the msg */
786         msg->msgcode = DIDMSG_P2REQ_READPDA;
787         msg->msglen = sizeof(msg);
788         strscpy(msg->devname, wlandev->name, sizeof(msg->devname));
789         msg->pda.did = DIDMSG_P2REQ_READPDA_PDA;
790         msg->pda.len = HFA384x_PDA_LEN_MAX;
791         msg->pda.status = P80211ENUM_msgitem_status_no_value;
792         msg->resultcode.did = DIDMSG_P2REQ_READPDA_RESULTCODE;
793         msg->resultcode.len = sizeof(u32);
794         msg->resultcode.status = P80211ENUM_msgitem_status_no_value;
795
796         if (prism2mgmt_readpda(wlandev, msg) != 0) {
797                 /* prism2mgmt_readpda prints an errno if appropriate */
798                 result = -1;
799         } else if (msg->resultcode.data == P80211ENUM_resultcode_success) {
800                 memcpy(pda->buf, msg->pda.data, HFA384x_PDA_LEN_MAX);
801                 result = mkpdrlist(pda);
802         } else {
803                 /* resultcode must've been something other than success */
804                 result = -1;
805         }
806
807         kfree(msg);
808         return result;
809 }
810
811 /*----------------------------------------------------------------
812  * read_fwfile
813  *
814  * Reads the given fw file which should have been compiled from an srec
815  * file. Each record in the fw file will either be a plain data record,
816  * a start address record, or other records used for plugging.
817  *
818  * Note that data records are expected to be sorted into
819  * ascending address order in the fw file.
820  *
821  * Note also that the start address record, originally an S7 record in
822  * the srec file, is expected in the fw file to be like a data record but
823  * with a certain address to make it identifiable.
824  *
825  * Here's the SREC format that the fw should have come from:
826  * S[37]nnaaaaaaaaddd...dddcc
827  *
828  *       nn - number of bytes starting with the address field
829  * aaaaaaaa - address in readable (or big endian) format
830  * dd....dd - 0-245 data bytes (two chars per byte)
831  *       cc - checksum
832  *
833  * The S7 record's (there should be only one) address value gets
834  * converted to an S3 record with address of 0xff400000, with the
835  * start address being stored as a 4 byte data word. That address is
836  * the start execution address used for RAM downloads.
837  *
838  * The S3 records have a collection of subformats indicated by the
839  * value of aaaaaaaa:
840  *   0xff000000 - Plug record, data field format:
841  *                xxxxxxxxaaaaaaaassssssss
842  *                x - PDR code number (little endian)
843  *                a - Address in load image to plug (little endian)
844  *                s - Length of plug data area (little endian)
845  *
846  *   0xff100000 - CRC16 generation record, data field format:
847  *                aaaaaaaassssssssbbbbbbbb
848  *                a - Start address for CRC calculation (little endian)
849  *                s - Length of data to  calculate over (little endian)
850  *                b - Boolean, true=write crc, false=don't write
851  *
852  *   0xff200000 - Info record, data field format:
853  *                ssssttttdd..dd
854  *                s - Size in words (little endian)
855  *                t - Info type (little endian), see #defines and
856  *                    struct s3inforec for details about types.
857  *                d - (s - 1) little endian words giving the contents of
858  *                    the given info type.
859  *
860  *   0xff400000 - Start address record, data field format:
861  *                aaaaaaaa
862  *                a - Address in load image to plug (little endian)
863  *
864  * Arguments:
865  *      record  firmware image (ihex record structure) in kernel memory
866  *
867  * Returns:
868  *      0       - success
869  *      ~0      - failure (probably an errno)
870  *----------------------------------------------------------------
871  */
872 static int read_fwfile(const struct ihex_binrec *record)
873 {
874         int             i;
875         int             rcnt = 0;
876         u16             *tmpinfo;
877         u16             *ptr16;
878         u32             *ptr32, len, addr;
879
880         pr_debug("Reading fw file ...\n");
881
882         while (record) {
883                 rcnt++;
884
885                 len = be16_to_cpu(record->len);
886                 addr = be32_to_cpu(record->addr);
887
888                 /* Point into data for different word lengths */
889                 ptr32 = (u32 *)record->data;
890                 ptr16 = (u16 *)record->data;
891
892                 /* parse what was an S3 srec and put it in the right array */
893                 switch (addr) {
894                 case S3ADDR_START:
895                         startaddr = *ptr32;
896                         pr_debug("  S7 start addr, record=%d addr=0x%08x\n",
897                                  rcnt,
898                                  startaddr);
899                         break;
900                 case S3ADDR_PLUG:
901                         s3plug[ns3plug].itemcode = *ptr32;
902                         s3plug[ns3plug].addr = *(ptr32 + 1);
903                         s3plug[ns3plug].len = *(ptr32 + 2);
904
905                         pr_debug("  S3 plugrec, record=%d itemcode=0x%08x addr=0x%08x len=%d\n",
906                                  rcnt,
907                                  s3plug[ns3plug].itemcode,
908                                  s3plug[ns3plug].addr,
909                                  s3plug[ns3plug].len);
910
911                         ns3plug++;
912                         if (ns3plug == S3PLUG_MAX) {
913                                 pr_err("S3 plugrec limit reached - aborting\n");
914                                 return 1;
915                         }
916                         break;
917                 case S3ADDR_CRC:
918                         s3crc[ns3crc].addr = *ptr32;
919                         s3crc[ns3crc].len = *(ptr32 + 1);
920                         s3crc[ns3crc].dowrite = *(ptr32 + 2);
921
922                         pr_debug("  S3 crcrec, record=%d addr=0x%08x len=%d write=0x%08x\n",
923                                  rcnt,
924                                  s3crc[ns3crc].addr,
925                                  s3crc[ns3crc].len,
926                                  s3crc[ns3crc].dowrite);
927                         ns3crc++;
928                         if (ns3crc == S3CRC_MAX) {
929                                 pr_err("S3 crcrec limit reached - aborting\n");
930                                 return 1;
931                         }
932                         break;
933                 case S3ADDR_INFO:
934                         s3info[ns3info].len = *ptr16;
935                         s3info[ns3info].type = *(ptr16 + 1);
936
937                         pr_debug("  S3 inforec, record=%d len=0x%04x type=0x%04x\n",
938                                  rcnt,
939                                  s3info[ns3info].len,
940                                  s3info[ns3info].type);
941                         if (((s3info[ns3info].len - 1) * sizeof(u16)) >
942                            sizeof(s3info[ns3info].info)) {
943                                 pr_err("S3 inforec length too long - aborting\n");
944                                 return 1;
945                         }
946
947                         tmpinfo = (u16 *)&s3info[ns3info].info.version;
948                         pr_debug("            info=");
949                         for (i = 0; i < s3info[ns3info].len - 1; i++) {
950                                 tmpinfo[i] = *(ptr16 + 2 + i);
951                                 pr_debug("%04x ", tmpinfo[i]);
952                         }
953                         pr_debug("\n");
954
955                         ns3info++;
956                         if (ns3info == S3INFO_MAX) {
957                                 pr_err("S3 inforec limit reached - aborting\n");
958                                 return 1;
959                         }
960                         break;
961                 default:        /* Data record */
962                         s3data[ns3data].addr = addr;
963                         s3data[ns3data].len = len;
964                         s3data[ns3data].data = (uint8_t *)record->data;
965                         ns3data++;
966                         if (ns3data == S3DATA_MAX) {
967                                 pr_err("S3 datarec limit reached - aborting\n");
968                                 return 1;
969                         }
970                         break;
971                 }
972                 record = ihex_next_binrec(record);
973         }
974         return 0;
975 }
976
977 /*----------------------------------------------------------------
978  * writeimage
979  *
980  * Takes the chunks, builds p80211 messages and sends them down
981  * to the driver for writing to the card.
982  *
983  * Arguments:
984  *      wlandev         device
985  *      fchunk          Array of image chunks
986  *      nfchunks        Number of image chunks
987  *
988  * Returns:
989  *      0       success
990  *      ~0      failure
991  *----------------------------------------------------------------
992  */
993 static int writeimage(struct wlandevice *wlandev, struct imgchunk *fchunk,
994                       unsigned int nfchunks)
995 {
996         int result = 0;
997         struct p80211msg_p2req_ramdl_state *rstmsg;
998         struct p80211msg_p2req_ramdl_write *rwrmsg;
999         u32 resultcode;
1000         int i;
1001         int j;
1002         unsigned int nwrites;
1003         u32 curroff;
1004         u32 currlen;
1005         u32 currdaddr;
1006
1007         rstmsg = kzalloc(sizeof(*rstmsg), GFP_KERNEL);
1008         rwrmsg = kzalloc(sizeof(*rwrmsg), GFP_KERNEL);
1009         if (!rstmsg || !rwrmsg) {
1010                 netdev_err(wlandev->netdev,
1011                            "%s: no memory for firmware download, aborting download\n",
1012                            __func__);
1013                 result = -ENOMEM;
1014                 goto free_result;
1015         }
1016
1017         /* Initialize the messages */
1018         strscpy(rstmsg->devname, wlandev->name, sizeof(rstmsg->devname));
1019         rstmsg->msgcode = DIDMSG_P2REQ_RAMDL_STATE;
1020         rstmsg->msglen = sizeof(*rstmsg);
1021         rstmsg->enable.did = DIDMSG_P2REQ_RAMDL_STATE_ENABLE;
1022         rstmsg->exeaddr.did = DIDMSG_P2REQ_RAMDL_STATE_EXEADDR;
1023         rstmsg->resultcode.did = DIDMSG_P2REQ_RAMDL_STATE_RESULTCODE;
1024         rstmsg->enable.status = P80211ENUM_msgitem_status_data_ok;
1025         rstmsg->exeaddr.status = P80211ENUM_msgitem_status_data_ok;
1026         rstmsg->resultcode.status = P80211ENUM_msgitem_status_no_value;
1027         rstmsg->enable.len = sizeof(u32);
1028         rstmsg->exeaddr.len = sizeof(u32);
1029         rstmsg->resultcode.len = sizeof(u32);
1030
1031         strscpy(rwrmsg->devname, wlandev->name, sizeof(rwrmsg->devname));
1032         rwrmsg->msgcode = DIDMSG_P2REQ_RAMDL_WRITE;
1033         rwrmsg->msglen = sizeof(*rwrmsg);
1034         rwrmsg->addr.did = DIDMSG_P2REQ_RAMDL_WRITE_ADDR;
1035         rwrmsg->len.did = DIDMSG_P2REQ_RAMDL_WRITE_LEN;
1036         rwrmsg->data.did = DIDMSG_P2REQ_RAMDL_WRITE_DATA;
1037         rwrmsg->resultcode.did = DIDMSG_P2REQ_RAMDL_WRITE_RESULTCODE;
1038         rwrmsg->addr.status = P80211ENUM_msgitem_status_data_ok;
1039         rwrmsg->len.status = P80211ENUM_msgitem_status_data_ok;
1040         rwrmsg->data.status = P80211ENUM_msgitem_status_data_ok;
1041         rwrmsg->resultcode.status = P80211ENUM_msgitem_status_no_value;
1042         rwrmsg->addr.len = sizeof(u32);
1043         rwrmsg->len.len = sizeof(u32);
1044         rwrmsg->data.len = WRITESIZE_MAX;
1045         rwrmsg->resultcode.len = sizeof(u32);
1046
1047         /* Send xxx_state(enable) */
1048         pr_debug("Sending dl_state(enable) message.\n");
1049         rstmsg->enable.data = P80211ENUM_truth_true;
1050         rstmsg->exeaddr.data = startaddr;
1051
1052         result = prism2mgmt_ramdl_state(wlandev, rstmsg);
1053         if (result) {
1054                 netdev_err(wlandev->netdev,
1055                            "%s state enable failed w/ result=%d, aborting download\n",
1056                            __func__, result);
1057                 goto free_result;
1058         }
1059         resultcode = rstmsg->resultcode.data;
1060         if (resultcode != P80211ENUM_resultcode_success) {
1061                 netdev_err(wlandev->netdev,
1062                            "%s()->xxxdl_state msg indicates failure, w/ resultcode=%d, aborting download.\n",
1063                            __func__, resultcode);
1064                 result = 1;
1065                 goto free_result;
1066         }
1067
1068         /* Now, loop through the data chunks and send WRITESIZE_MAX data */
1069         for (i = 0; i < nfchunks; i++) {
1070                 nwrites = fchunk[i].len / WRITESIZE_MAX;
1071                 nwrites += (fchunk[i].len % WRITESIZE_MAX) ? 1 : 0;
1072                 curroff = 0;
1073                 for (j = 0; j < nwrites; j++) {
1074                         /* TODO Move this to a separate function */
1075                         int lenleft = fchunk[i].len - (WRITESIZE_MAX * j);
1076
1077                         if (fchunk[i].len > WRITESIZE_MAX)
1078                                 currlen = WRITESIZE_MAX;
1079                         else
1080                                 currlen = lenleft;
1081                         curroff = j * WRITESIZE_MAX;
1082                         currdaddr = fchunk[i].addr + curroff;
1083                         /* Setup the message */
1084                         rwrmsg->addr.data = currdaddr;
1085                         rwrmsg->len.data = currlen;
1086                         memcpy(rwrmsg->data.data,
1087                                fchunk[i].data + curroff, currlen);
1088
1089                         /* Send flashdl_write(pda) */
1090                         pr_debug
1091                             ("Sending xxxdl_write message addr=%06x len=%d.\n",
1092                              currdaddr, currlen);
1093
1094                         result = prism2mgmt_ramdl_write(wlandev, rwrmsg);
1095
1096                         /* Check the results */
1097                         if (result) {
1098                                 netdev_err(wlandev->netdev,
1099                                            "%s chunk write failed w/ result=%d, aborting download\n",
1100                                            __func__, result);
1101                                 goto free_result;
1102                         }
1103                         resultcode = rstmsg->resultcode.data;
1104                         if (resultcode != P80211ENUM_resultcode_success) {
1105                                 pr_err("%s()->xxxdl_write msg indicates failure, w/ resultcode=%d, aborting download.\n",
1106                                        __func__, resultcode);
1107                                 result = 1;
1108                                 goto free_result;
1109                         }
1110                 }
1111         }
1112
1113         /* Send xxx_state(disable) */
1114         pr_debug("Sending dl_state(disable) message.\n");
1115         rstmsg->enable.data = P80211ENUM_truth_false;
1116         rstmsg->exeaddr.data = 0;
1117
1118         result = prism2mgmt_ramdl_state(wlandev, rstmsg);
1119         if (result) {
1120                 netdev_err(wlandev->netdev,
1121                            "%s state disable failed w/ result=%d, aborting download\n",
1122                            __func__, result);
1123                 goto free_result;
1124         }
1125         resultcode = rstmsg->resultcode.data;
1126         if (resultcode != P80211ENUM_resultcode_success) {
1127                 netdev_err(wlandev->netdev,
1128                            "%s()->xxxdl_state msg indicates failure, w/ resultcode=%d, aborting download.\n",
1129                            __func__, resultcode);
1130                 result = 1;
1131                 goto free_result;
1132         }
1133
1134 free_result:
1135         kfree(rstmsg);
1136         kfree(rwrmsg);
1137         return result;
1138 }
1139
1140 static int validate_identity(void)
1141 {
1142         int i;
1143         int result = 1;
1144         int trump = 0;
1145
1146         pr_debug("NIC ID: %#x v%d.%d.%d\n",
1147                  nicid.id, nicid.major, nicid.minor, nicid.variant);
1148         pr_debug("MFI ID: %#x v%d %d->%d\n",
1149                  rfid.id, rfid.variant, rfid.bottom, rfid.top);
1150         pr_debug("CFI ID: %#x v%d %d->%d\n",
1151                  macid.id, macid.variant, macid.bottom, macid.top);
1152         pr_debug("PRI ID: %#x v%d %d->%d\n",
1153                  priid.id, priid.variant, priid.bottom, priid.top);
1154
1155         for (i = 0; i < ns3info; i++) {
1156                 switch (s3info[i].type) {
1157                 case 1:
1158                         pr_debug("Version:  ID %#x %d.%d.%d\n",
1159                                  s3info[i].info.version.id,
1160                                  s3info[i].info.version.major,
1161                                  s3info[i].info.version.minor,
1162                                  s3info[i].info.version.variant);
1163                         break;
1164                 case 2:
1165                         pr_debug("Compat: Role %#x Id %#x v%d %d->%d\n",
1166                                  s3info[i].info.compat.role,
1167                                  s3info[i].info.compat.id,
1168                                  s3info[i].info.compat.variant,
1169                                  s3info[i].info.compat.bottom,
1170                                  s3info[i].info.compat.top);
1171
1172                         /* MAC compat range */
1173                         if ((s3info[i].info.compat.role == 1) &&
1174                             (s3info[i].info.compat.id == 2)) {
1175                                 if (s3info[i].info.compat.variant !=
1176                                     macid.variant) {
1177                                         result = 2;
1178                                 }
1179                         }
1180
1181                         /* PRI compat range */
1182                         if ((s3info[i].info.compat.role == 1) &&
1183                             (s3info[i].info.compat.id == 3)) {
1184                                 if ((s3info[i].info.compat.bottom >
1185                                      priid.top) ||
1186                                     (s3info[i].info.compat.top <
1187                                      priid.bottom)) {
1188                                         result = 3;
1189                                 }
1190                         }
1191                         /* SEC compat range */
1192                         if ((s3info[i].info.compat.role == 1) &&
1193                             (s3info[i].info.compat.id == 4)) {
1194                                 /* FIXME: isn't something missing here? */
1195                         }
1196
1197                         break;
1198                 case 3:
1199                         pr_debug("Seq: %#x\n", s3info[i].info.buildseq);
1200
1201                         break;
1202                 case 4:
1203                         pr_debug("Platform:  ID %#x %d.%d.%d\n",
1204                                  s3info[i].info.version.id,
1205                                  s3info[i].info.version.major,
1206                                  s3info[i].info.version.minor,
1207                                  s3info[i].info.version.variant);
1208
1209                         if (nicid.id != s3info[i].info.version.id)
1210                                 continue;
1211                         if (nicid.major != s3info[i].info.version.major)
1212                                 continue;
1213                         if (nicid.minor != s3info[i].info.version.minor)
1214                                 continue;
1215                         if ((nicid.variant != s3info[i].info.version.variant) &&
1216                             (nicid.id != 0x8008))
1217                                 continue;
1218
1219                         trump = 1;
1220                         break;
1221                 case 0x8001:
1222                         pr_debug("name inforec len %d\n", s3info[i].len);
1223
1224                         break;
1225                 default:
1226                         pr_debug("Unknown inforec type %d\n", s3info[i].type);
1227                 }
1228         }
1229         /* walk through */
1230
1231         if (trump && (result != 2))
1232                 result = 0;
1233         return result;
1234 }
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