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[MTD] Sparse fixes
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / mtd / nand / diskonchip.c
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1da177e4
LT		 1/*
2 * drivers/mtd/nand/diskonchip.c
3 *
4 * (C) 2003 Red Hat, Inc.
5 * (C) 2004 Dan Brown <dan_brown@ieee.org>
6 * (C) 2004 Kalev Lember <kalev@smartlink.ee>
7 *
8 * Author: David Woodhouse <dwmw2@infradead.org>
9 * Additional Diskonchip 2000 and Millennium support by Dan Brown <dan_brown@ieee.org>
10 * Diskonchip Millennium Plus support by Kalev Lember <kalev@smartlink.ee>
11 *
12 * Error correction code lifted from the old docecc code
13 * Author: Fabrice Bellard (fabrice.bellard@netgem.com)
14 * Copyright (C) 2000 Netgem S.A.
15 * converted to the generic Reed-Solomon library by Thomas Gleixner <tglx@linutronix.de>
16 *
17 * Interface to generic NAND code for M-Systems DiskOnChip devices
18 *
f29a4b86 19 * $Id: diskonchip.c,v 1.48 2005/01/31 22:22:21 gleixner Exp $
1da177e4
LT		 20 */
21
22#include <linux/kernel.h>
23#include <linux/init.h>
24#include <linux/sched.h>
25#include <linux/delay.h>
26#include <linux/rslib.h>
27#include <linux/moduleparam.h>
28#include <asm/io.h>
29
30#include <linux/mtd/mtd.h>
31#include <linux/mtd/nand.h>
32#include <linux/mtd/doc2000.h>
33#include <linux/mtd/compatmac.h>
34#include <linux/mtd/partitions.h>
35#include <linux/mtd/inftl.h>
36
37/* Where to look for the devices? */
651078ba
TG		 38#ifndef CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS
39#define CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS 0
1da177e4
LT		 40#endif
41
42static unsigned long __initdata doc_locations[] = {
43#if defined (__alpha__) || defined(__i386__) || defined(__x86_64__)
651078ba 44#ifdef CONFIG_MTD_NAND_DISKONCHIP_PROBE_HIGH
1da177e4
LT		 45 0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000,
46 0xfffd0000, 0xfffd2000, 0xfffd4000, 0xfffd6000,
47 0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000,
48 0xfffe0000, 0xfffe2000, 0xfffe4000, 0xfffe6000,
49 0xfffe8000, 0xfffea000, 0xfffec000, 0xfffee000,
50#else /* CONFIG_MTD_DOCPROBE_HIGH */
51 0xc8000, 0xca000, 0xcc000, 0xce000,
52 0xd0000, 0xd2000, 0xd4000, 0xd6000,
53 0xd8000, 0xda000, 0xdc000, 0xde000,
54 0xe0000, 0xe2000, 0xe4000, 0xe6000,
55 0xe8000, 0xea000, 0xec000, 0xee000,
56#endif /* CONFIG_MTD_DOCPROBE_HIGH */
57#elif defined(__PPC__)
58 0xe4000000,
59#elif defined(CONFIG_MOMENCO_OCELOT)
60 0x2f000000,
61 0xff000000,
62#elif defined(CONFIG_MOMENCO_OCELOT_G) || defined (CONFIG_MOMENCO_OCELOT_C)
63 0xff000000,
64##else
65#warning Unknown architecture for DiskOnChip. No default probe locations defined
66#endif
67 0xffffffff };
68
69static struct mtd_info *doclist = NULL;
70
71struct doc_priv {
72 void __iomem *virtadr;
73 unsigned long physadr;
74 u_char ChipID;
75 u_char CDSNControl;
76 int chips_per_floor; /* The number of chips detected on each floor */
77 int curfloor;
78 int curchip;
79 int mh0_page;
80 int mh1_page;
81 struct mtd_info *nextdoc;
82};
83
84/* Max number of eraseblocks to scan (from start of device) for the (I)NFTL
85 MediaHeader. The spec says to just keep going, I think, but that's just
86 silly. */
87#define MAX_MEDIAHEADER_SCAN 8
88
89/* This is the syndrome computed by the HW ecc generator upon reading an empty
90 page, one with all 0xff for data and stored ecc code. */
91static u_char empty_read_syndrome[6] = { 0x26, 0xff, 0x6d, 0x47, 0x73, 0x7a };
92/* This is the ecc value computed by the HW ecc generator upon writing an empty
93 page, one with all 0xff for data. */
94static u_char empty_write_ecc[6] = { 0x4b, 0x00, 0xe2, 0x0e, 0x93, 0xf7 };
95
96#define INFTL_BBT_RESERVED_BLOCKS 4
97
98#define DoC_is_MillenniumPlus(doc) ((doc)->ChipID == DOC_ChipID_DocMilPlus16 || (doc)->ChipID == DOC_ChipID_DocMilPlus32)
99#define DoC_is_Millennium(doc) ((doc)->ChipID == DOC_ChipID_DocMil)
100#define DoC_is_2000(doc) ((doc)->ChipID == DOC_ChipID_Doc2k)
101
102static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd);
103static void doc200x_select_chip(struct mtd_info *mtd, int chip);
104
105static int debug=0;
106module_param(debug, int, 0);
107
108static int try_dword=1;
109module_param(try_dword, int, 0);
110
111static int no_ecc_failures=0;
112module_param(no_ecc_failures, int, 0);
113
114#ifdef CONFIG_MTD_PARTITIONS
115static int no_autopart=0;
116module_param(no_autopart, int, 0);
117#endif
118
119#ifdef MTD_NAND_DISKONCHIP_BBTWRITE
120static int inftl_bbt_write=1;
121#else
122static int inftl_bbt_write=0;
123#endif
124module_param(inftl_bbt_write, int, 0);
125
651078ba 126static unsigned long doc_config_location = CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS;
1da177e4
LT		 127module_param(doc_config_location, ulong, 0);
128MODULE_PARM_DESC(doc_config_location, "Physical memory address at which to probe for DiskOnChip");
129
130
131/* Sector size for HW ECC */
132#define SECTOR_SIZE 512
133/* The sector bytes are packed into NB_DATA 10 bit words */
134#define NB_DATA (((SECTOR_SIZE + 1) * 8 + 6) / 10)
135/* Number of roots */
136#define NROOTS 4
137/* First consective root */
138#define FCR 510
139/* Number of symbols */
140#define NN 1023
141
142/* the Reed Solomon control structure */
143static struct rs_control *rs_decoder;
144
145/*
146 * The HW decoder in the DoC ASIC's provides us a error syndrome,
147 * which we must convert to a standard syndrom usable by the generic
148 * Reed-Solomon library code.
149 *
150 * Fabrice Bellard figured this out in the old docecc code. I added
151 * some comments, improved a minor bit and converted it to make use
152 * of the generic Reed-Solomon libary. tglx
153 */
154static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc)
155{
156 int i, j, nerr, errpos[8];
157 uint8_t parity;
158 uint16_t ds[4], s[5], tmp, errval[8], syn[4];
159
160 /* Convert the ecc bytes into words */
161 ds[0] = ((ecc[4] & 0xff) >> 0) | ((ecc[5] & 0x03) << 8);
162 ds[1] = ((ecc[5] & 0xfc) >> 2) | ((ecc[2] & 0x0f) << 6);
163 ds[2] = ((ecc[2] & 0xf0) >> 4) | ((ecc[3] & 0x3f) << 4);
164 ds[3] = ((ecc[3] & 0xc0) >> 6) | ((ecc[0] & 0xff) << 2);
165 parity = ecc[1];
166
167 /* Initialize the syndrom buffer */
168 for (i = 0; i < NROOTS; i++)
169 s[i] = ds[0];
170 /*
171 * Evaluate
172 * s[i] = ds[3]x^3 + ds[2]x^2 + ds[1]x^1 + ds[0]
173 * where x = alpha^(FCR + i)
174 */
175 for(j = 1; j < NROOTS; j++) {
176 if(ds[j] == 0)
177 continue;
178 tmp = rs->index_of[ds[j]];
179 for(i = 0; i < NROOTS; i++)
180 s[i] ^= rs->alpha_to[rs_modnn(rs, tmp + (FCR + i) * j)];
181 }
182
183 /* Calc s[i] = s[i] / alpha^(v + i) */
184 for (i = 0; i < NROOTS; i++) {
185 if (syn[i])
186 syn[i] = rs_modnn(rs, rs->index_of[s[i]] + (NN - FCR - i));
187 }
188 /* Call the decoder library */
189 nerr = decode_rs16(rs, NULL, NULL, 1019, syn, 0, errpos, 0, errval);
190
191 /* Incorrectable errors ? */
192 if (nerr < 0)
193 return nerr;
194
195 /*
196 * Correct the errors. The bitpositions are a bit of magic,
197 * but they are given by the design of the de/encoder circuit
198 * in the DoC ASIC's.
199 */
200 for(i = 0;i < nerr; i++) {
201 int index, bitpos, pos = 1015 - errpos[i];
202 uint8_t val;
203 if (pos >= NB_DATA && pos < 1019)
204 continue;
205 if (pos < NB_DATA) {
206 /* extract bit position (MSB first) */
207 pos = 10 * (NB_DATA - 1 - pos) - 6;
208 /* now correct the following 10 bits. At most two bytes
209 can be modified since pos is even */
210 index = (pos >> 3) ^ 1;
211 bitpos = pos & 7;
212 if ((index >= 0 && index < SECTOR_SIZE) ||
213 index == (SECTOR_SIZE + 1)) {
214 val = (uint8_t) (errval[i] >> (2 + bitpos));
215 parity ^= val;
216 if (index < SECTOR_SIZE)
217 data[index] ^= val;
218 }
219 index = ((pos >> 3) + 1) ^ 1;
220 bitpos = (bitpos + 10) & 7;
221 if (bitpos == 0)
222 bitpos = 8;
223 if ((index >= 0 && index < SECTOR_SIZE) ||
224 index == (SECTOR_SIZE + 1)) {
225 val = (uint8_t)(errval[i] << (8 - bitpos));
226 parity ^= val;
227 if (index < SECTOR_SIZE)
228 data[index] ^= val;
229 }
230 }
231 }
232 /* If the parity is wrong, no rescue possible */
233 return parity ? -1 : nerr;
234}
235
236static void DoC_Delay(struct doc_priv *doc, unsigned short cycles)
237{
238 volatile char dummy;
239 int i;
240
241 for (i = 0; i < cycles; i++) {
242 if (DoC_is_Millennium(doc))
243 dummy = ReadDOC(doc->virtadr, NOP);
244 else if (DoC_is_MillenniumPlus(doc))
245 dummy = ReadDOC(doc->virtadr, Mplus_NOP);
246 else
247 dummy = ReadDOC(doc->virtadr, DOCStatus);
248 }
249
250}
251
252#define CDSN_CTRL_FR_B_MASK (CDSN_CTRL_FR_B0 | CDSN_CTRL_FR_B1)
253
254/* DOC_WaitReady: Wait for RDY line to be asserted by the flash chip */
255static int _DoC_WaitReady(struct doc_priv *doc)
256{
257 void __iomem *docptr = doc->virtadr;
258 unsigned long timeo = jiffies + (HZ * 10);
259
260 if(debug) printk("_DoC_WaitReady...\n");
261 /* Out-of-line routine to wait for chip response */
262 if (DoC_is_MillenniumPlus(doc)) {
263 while ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) {
264 if (time_after(jiffies, timeo)) {
265 printk("_DoC_WaitReady timed out.\n");
266 return -EIO;
267 }
268 udelay(1);
269 cond_resched();
270 }
271 } else {
272 while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) {
273 if (time_after(jiffies, timeo)) {
274 printk("_DoC_WaitReady timed out.\n");
275 return -EIO;
276 }
277 udelay(1);
278 cond_resched();
279 }
280 }
281
282 return 0;
283}
284
285static inline int DoC_WaitReady(struct doc_priv *doc)
286{
287 void __iomem *docptr = doc->virtadr;
288 int ret = 0;
289
290 if (DoC_is_MillenniumPlus(doc)) {
291 DoC_Delay(doc, 4);
292
293 if ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK)
294 /* Call the out-of-line routine to wait */
295 ret = _DoC_WaitReady(doc);
296 } else {
297 DoC_Delay(doc, 4);
298
299 if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B))
300 /* Call the out-of-line routine to wait */
301 ret = _DoC_WaitReady(doc);
302 DoC_Delay(doc, 2);
303 }
304
305 if(debug) printk("DoC_WaitReady OK\n");
306 return ret;
307}
308
309static void doc2000_write_byte(struct mtd_info *mtd, u_char datum)
310{
311 struct nand_chip *this = mtd->priv;
312 struct doc_priv *doc = this->priv;
313 void __iomem *docptr = doc->virtadr;
314
315 if(debug)printk("write_byte %02x\n", datum);
316 WriteDOC(datum, docptr, CDSNSlowIO);
317 WriteDOC(datum, docptr, 2k_CDSN_IO);
318}
319
320static u_char doc2000_read_byte(struct mtd_info *mtd)
321{
322 struct nand_chip *this = mtd->priv;
323 struct doc_priv *doc = this->priv;
324 void __iomem *docptr = doc->virtadr;
325 u_char ret;
326
327 ReadDOC(docptr, CDSNSlowIO);
328 DoC_Delay(doc, 2);
329 ret = ReadDOC(docptr, 2k_CDSN_IO);
330 if (debug) printk("read_byte returns %02x\n", ret);
331 return ret;
332}
333
334static void doc2000_writebuf(struct mtd_info *mtd,
335 const u_char *buf, int len)
336{
337 struct nand_chip *this = mtd->priv;
338 struct doc_priv *doc = this->priv;
339 void __iomem *docptr = doc->virtadr;
340 int i;
341 if (debug)printk("writebuf of %d bytes: ", len);
342 for (i=0; i < len; i++) {
343 WriteDOC_(buf[i], docptr, DoC_2k_CDSN_IO + i);
344 if (debug && i < 16)
345 printk("%02x ", buf[i]);
346 }
347 if (debug) printk("\n");
348}
349
350static void doc2000_readbuf(struct mtd_info *mtd,
351 u_char *buf, int len)
352{
353 struct nand_chip *this = mtd->priv;
354 struct doc_priv *doc = this->priv;
355 void __iomem *docptr = doc->virtadr;
356 int i;
357
358 if (debug)printk("readbuf of %d bytes: ", len);
359
360 for (i=0; i < len; i++) {
361 buf[i] = ReadDOC(docptr, 2k_CDSN_IO + i);
362 }
363}
364
365static void doc2000_readbuf_dword(struct mtd_info *mtd,
366 u_char *buf, int len)
367{
368 struct nand_chip *this = mtd->priv;
369 struct doc_priv *doc = this->priv;
370 void __iomem *docptr = doc->virtadr;
371 int i;
372
373 if (debug) printk("readbuf_dword of %d bytes: ", len);
374
375 if (unlikely((((unsigned long)buf)|len) & 3)) {
376 for (i=0; i < len; i++) {
377 *(uint8_t *)(&buf[i]) = ReadDOC(docptr, 2k_CDSN_IO + i);
378 }
379 } else {
380 for (i=0; i < len; i+=4) {
381 *(uint32_t*)(&buf[i]) = readl(docptr + DoC_2k_CDSN_IO + i);
382 }
383 }
384}
385
386static int doc2000_verifybuf(struct mtd_info *mtd,
387 const u_char *buf, int len)
388{
389 struct nand_chip *this = mtd->priv;
390 struct doc_priv *doc = this->priv;
391 void __iomem *docptr = doc->virtadr;
392 int i;
393
394 for (i=0; i < len; i++)
395 if (buf[i] != ReadDOC(docptr, 2k_CDSN_IO))
396 return -EFAULT;
397 return 0;
398}
399
400static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr)
401{
402 struct nand_chip *this = mtd->priv;
403 struct doc_priv *doc = this->priv;
404 uint16_t ret;
405
406 doc200x_select_chip(mtd, nr);
407 doc200x_hwcontrol(mtd, NAND_CTL_SETCLE);
408 this->write_byte(mtd, NAND_CMD_READID);
409 doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE);
410 doc200x_hwcontrol(mtd, NAND_CTL_SETALE);
411 this->write_byte(mtd, 0);
412 doc200x_hwcontrol(mtd, NAND_CTL_CLRALE);
413
414 ret = this->read_byte(mtd) << 8;
415 ret |= this->read_byte(mtd);
416
417 if (doc->ChipID == DOC_ChipID_Doc2k && try_dword && !nr) {
418 /* First chip probe. See if we get same results by 32-bit access */
419 union {
420 uint32_t dword;
421 uint8_t byte[4];
422 } ident;
423 void __iomem *docptr = doc->virtadr;
424
425 doc200x_hwcontrol(mtd, NAND_CTL_SETCLE);
426 doc2000_write_byte(mtd, NAND_CMD_READID);
427 doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE);
428 doc200x_hwcontrol(mtd, NAND_CTL_SETALE);
429 doc2000_write_byte(mtd, 0);
430 doc200x_hwcontrol(mtd, NAND_CTL_CLRALE);
431
432 ident.dword = readl(docptr + DoC_2k_CDSN_IO);
433 if (((ident.byte[0] << 8) | ident.byte[1]) == ret) {
434 printk(KERN_INFO "DiskOnChip 2000 responds to DWORD access\n");
435 this->read_buf = &doc2000_readbuf_dword;
436 }
437 }
438
439 return ret;
440}
441
442static void __init doc2000_count_chips(struct mtd_info *mtd)
443{
444 struct nand_chip *this = mtd->priv;
445 struct doc_priv *doc = this->priv;
446 uint16_t mfrid;
447 int i;
448
449 /* Max 4 chips per floor on DiskOnChip 2000 */
450 doc->chips_per_floor = 4;
451
452 /* Find out what the first chip is */
453 mfrid = doc200x_ident_chip(mtd, 0);
454
455 /* Find how many chips in each floor. */
456 for (i = 1; i < 4; i++) {
457 if (doc200x_ident_chip(mtd, i) != mfrid)
458 break;
459 }
460 doc->chips_per_floor = i;
461 printk(KERN_DEBUG "Detected %d chips per floor.\n", i);
462}
463
464static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
465{
466 struct doc_priv *doc = this->priv;
467
468 int status;
469
470 DoC_WaitReady(doc);
471 this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
472 DoC_WaitReady(doc);
473 status = (int)this->read_byte(mtd);
474
475 return status;
476}
477
478static void doc2001_write_byte(struct mtd_info *mtd, u_char datum)
479{
480 struct nand_chip *this = mtd->priv;
481 struct doc_priv *doc = this->priv;
482 void __iomem *docptr = doc->virtadr;
483
484 WriteDOC(datum, docptr, CDSNSlowIO);
485 WriteDOC(datum, docptr, Mil_CDSN_IO);
486 WriteDOC(datum, docptr, WritePipeTerm);
487}
488
489static u_char doc2001_read_byte(struct mtd_info *mtd)
490{
491 struct nand_chip *this = mtd->priv;
492 struct doc_priv *doc = this->priv;
493 void __iomem *docptr = doc->virtadr;
494
495 //ReadDOC(docptr, CDSNSlowIO);
496 /* 11.4.5 -- delay twice to allow extended length cycle */
497 DoC_Delay(doc, 2);
498 ReadDOC(docptr, ReadPipeInit);
499 //return ReadDOC(docptr, Mil_CDSN_IO);
500 return ReadDOC(docptr, LastDataRead);
501}
502
503static void doc2001_writebuf(struct mtd_info *mtd,
504 const u_char *buf, int len)
505{
506 struct nand_chip *this = mtd->priv;
507 struct doc_priv *doc = this->priv;
508 void __iomem *docptr = doc->virtadr;
509 int i;
510
511 for (i=0; i < len; i++)
512 WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i);
513 /* Terminate write pipeline */
514 WriteDOC(0x00, docptr, WritePipeTerm);
515}
516
517static void doc2001_readbuf(struct mtd_info *mtd,
518 u_char *buf, int len)
519{
520 struct nand_chip *this = mtd->priv;
521 struct doc_priv *doc = this->priv;
522 void __iomem *docptr = doc->virtadr;
523 int i;
524
525 /* Start read pipeline */
526 ReadDOC(docptr, ReadPipeInit);
527
528 for (i=0; i < len-1; i++)
529 buf[i] = ReadDOC(docptr, Mil_CDSN_IO + (i & 0xff));
530
531 /* Terminate read pipeline */
532 buf[i] = ReadDOC(docptr, LastDataRead);
533}
534
535static int doc2001_verifybuf(struct mtd_info *mtd,
536 const u_char *buf, int len)
537{
538 struct nand_chip *this = mtd->priv;
539 struct doc_priv *doc = this->priv;
540 void __iomem *docptr = doc->virtadr;
541 int i;
542
543 /* Start read pipeline */
544 ReadDOC(docptr, ReadPipeInit);
545
546 for (i=0; i < len-1; i++)
547 if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) {
548 ReadDOC(docptr, LastDataRead);
549 return i;
550 }
551 if (buf[i] != ReadDOC(docptr, LastDataRead))
552 return i;
553 return 0;
554}
555
556static u_char doc2001plus_read_byte(struct mtd_info *mtd)
557{
558 struct nand_chip *this = mtd->priv;
559 struct doc_priv *doc = this->priv;
560 void __iomem *docptr = doc->virtadr;
561 u_char ret;
562
563 ReadDOC(docptr, Mplus_ReadPipeInit);
564 ReadDOC(docptr, Mplus_ReadPipeInit);
565 ret = ReadDOC(docptr, Mplus_LastDataRead);
566 if (debug) printk("read_byte returns %02x\n", ret);
567 return ret;
568}
569
570static void doc2001plus_writebuf(struct mtd_info *mtd,
571 const u_char *buf, int len)
572{
573 struct nand_chip *this = mtd->priv;
574 struct doc_priv *doc = this->priv;
575 void __iomem *docptr = doc->virtadr;
576 int i;
577
578 if (debug)printk("writebuf of %d bytes: ", len);
579 for (i=0; i < len; i++) {
580 WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i);
581 if (debug && i < 16)
582 printk("%02x ", buf[i]);
583 }
584 if (debug) printk("\n");
585}
586
587static void doc2001plus_readbuf(struct mtd_info *mtd,
588 u_char *buf, int len)
589{
590 struct nand_chip *this = mtd->priv;
591 struct doc_priv *doc = this->priv;
592 void __iomem *docptr = doc->virtadr;
593 int i;
594
595 if (debug)printk("readbuf of %d bytes: ", len);
596
597 /* Start read pipeline */
598 ReadDOC(docptr, Mplus_ReadPipeInit);
599 ReadDOC(docptr, Mplus_ReadPipeInit);
600
601 for (i=0; i < len-2; i++) {
602 buf[i] = ReadDOC(docptr, Mil_CDSN_IO);
603 if (debug && i < 16)
604 printk("%02x ", buf[i]);
605 }
606
607 /* Terminate read pipeline */
608 buf[len-2] = ReadDOC(docptr, Mplus_LastDataRead);
609 if (debug && i < 16)
610 printk("%02x ", buf[len-2]);
611 buf[len-1] = ReadDOC(docptr, Mplus_LastDataRead);
612 if (debug && i < 16)
613 printk("%02x ", buf[len-1]);
614 if (debug) printk("\n");
615}
616
617static int doc2001plus_verifybuf(struct mtd_info *mtd,
618 const u_char *buf, int len)
619{
620 struct nand_chip *this = mtd->priv;
621 struct doc_priv *doc = this->priv;
622 void __iomem *docptr = doc->virtadr;
623 int i;
624
625 if (debug)printk("verifybuf of %d bytes: ", len);
626
627 /* Start read pipeline */
628 ReadDOC(docptr, Mplus_ReadPipeInit);
629 ReadDOC(docptr, Mplus_ReadPipeInit);
630
631 for (i=0; i < len-2; i++)
632 if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) {
633 ReadDOC(docptr, Mplus_LastDataRead);
634 ReadDOC(docptr, Mplus_LastDataRead);
635 return i;
636 }
637 if (buf[len-2] != ReadDOC(docptr, Mplus_LastDataRead))
638 return len-2;
639 if (buf[len-1] != ReadDOC(docptr, Mplus_LastDataRead))
640 return len-1;
641 return 0;
642}
643
644static void doc2001plus_select_chip(struct mtd_info *mtd, int chip)
645{
646 struct nand_chip *this = mtd->priv;
647 struct doc_priv *doc = this->priv;
648 void __iomem *docptr = doc->virtadr;
649 int floor = 0;
650
651 if(debug)printk("select chip (%d)\n", chip);
652
653 if (chip == -1) {
654 /* Disable flash internally */
655 WriteDOC(0, docptr, Mplus_FlashSelect);
656 return;
657 }
658
659 floor = chip / doc->chips_per_floor;
660 chip -= (floor * doc->chips_per_floor);
661
662 /* Assert ChipEnable and deassert WriteProtect */
663 WriteDOC((DOC_FLASH_CE), docptr, Mplus_FlashSelect);
664 this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
665
666 doc->curchip = chip;
667 doc->curfloor = floor;
668}
669
670static void doc200x_select_chip(struct mtd_info *mtd, int chip)
671{
672 struct nand_chip *this = mtd->priv;
673 struct doc_priv *doc = this->priv;
674 void __iomem *docptr = doc->virtadr;
675 int floor = 0;
676
677 if(debug)printk("select chip (%d)\n", chip);
678
679 if (chip == -1)
680 return;
681
682 floor = chip / doc->chips_per_floor;
683 chip -= (floor * doc->chips_per_floor);
684
685 /* 11.4.4 -- deassert CE before changing chip */
686 doc200x_hwcontrol(mtd, NAND_CTL_CLRNCE);
687
688 WriteDOC(floor, docptr, FloorSelect);
689 WriteDOC(chip, docptr, CDSNDeviceSelect);
690
691 doc200x_hwcontrol(mtd, NAND_CTL_SETNCE);
692
693 doc->curchip = chip;
694 doc->curfloor = floor;
695}
696
697static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd)
698{
699 struct nand_chip *this = mtd->priv;
700 struct doc_priv *doc = this->priv;
701 void __iomem *docptr = doc->virtadr;
702
703 switch(cmd) {
704 case NAND_CTL_SETNCE:
705 doc->CDSNControl |= CDSN_CTRL_CE;
706 break;
707 case NAND_CTL_CLRNCE:
708 doc->CDSNControl &= ~CDSN_CTRL_CE;
709 break;
710 case NAND_CTL_SETCLE:
711 doc->CDSNControl |= CDSN_CTRL_CLE;
712 break;
713 case NAND_CTL_CLRCLE:
714 doc->CDSNControl &= ~CDSN_CTRL_CLE;
715 break;
716 case NAND_CTL_SETALE:
717 doc->CDSNControl |= CDSN_CTRL_ALE;
718 break;
719 case NAND_CTL_CLRALE:
720 doc->CDSNControl &= ~CDSN_CTRL_ALE;
721 break;
722 case NAND_CTL_SETWP:
723 doc->CDSNControl |= CDSN_CTRL_WP;
724 break;
725 case NAND_CTL_CLRWP:
726 doc->CDSNControl &= ~CDSN_CTRL_WP;
727 break;
728 }
729 if (debug)printk("hwcontrol(%d): %02x\n", cmd, doc->CDSNControl);
730 WriteDOC(doc->CDSNControl, docptr, CDSNControl);
731 /* 11.4.3 -- 4 NOPs after CSDNControl write */
732 DoC_Delay(doc, 4);
733}
734
735static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int column, int page_addr)
736{
737 struct nand_chip *this = mtd->priv;
738 struct doc_priv *doc = this->priv;
739 void __iomem *docptr = doc->virtadr;
740
741 /*
742 * Must terminate write pipeline before sending any commands
743 * to the device.
744 */
745 if (command == NAND_CMD_PAGEPROG) {
746 WriteDOC(0x00, docptr, Mplus_WritePipeTerm);
747 WriteDOC(0x00, docptr, Mplus_WritePipeTerm);
748 }
749
750 /*
751 * Write out the command to the device.
752 */
753 if (command == NAND_CMD_SEQIN) {
754 int readcmd;
755
756 if (column >= mtd->oobblock) {
757 /* OOB area */
758 column -= mtd->oobblock;
759 readcmd = NAND_CMD_READOOB;
760 } else if (column < 256) {
761 /* First 256 bytes --> READ0 */
762 readcmd = NAND_CMD_READ0;
763 } else {
764 column -= 256;
765 readcmd = NAND_CMD_READ1;
766 }
767 WriteDOC(readcmd, docptr, Mplus_FlashCmd);
768 }
769 WriteDOC(command, docptr, Mplus_FlashCmd);
770 WriteDOC(0, docptr, Mplus_WritePipeTerm);
771 WriteDOC(0, docptr, Mplus_WritePipeTerm);
772
773 if (column != -1 || page_addr != -1) {
774 /* Serially input address */
775 if (column != -1) {
776 /* Adjust columns for 16 bit buswidth */
777 if (this->options & NAND_BUSWIDTH_16)
778 column >>= 1;
779 WriteDOC(column, docptr, Mplus_FlashAddress);
780 }
781 if (page_addr != -1) {
782 WriteDOC((unsigned char) (page_addr & 0xff), docptr, Mplus_FlashAddress);
783 WriteDOC((unsigned char) ((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress);
784 /* One more address cycle for higher density devices */
785 if (this->chipsize & 0x0c000000) {
786 WriteDOC((unsigned char) ((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress);
787 printk("high density\n");
788 }
789 }
790 WriteDOC(0, docptr, Mplus_WritePipeTerm);
791 WriteDOC(0, docptr, Mplus_WritePipeTerm);
792 /* deassert ALE */
793 if (command == NAND_CMD_READ0 || command == NAND_CMD_READ1 || command == NAND_CMD_READOOB || command == NAND_CMD_READID)
794 WriteDOC(0, docptr, Mplus_FlashControl);
795 }
796
797 /*
798 * program and erase have their own busy handlers
799 * status and sequential in needs no delay
800 */
801 switch (command) {
802
803 case NAND_CMD_PAGEPROG:
804 case NAND_CMD_ERASE1:
805 case NAND_CMD_ERASE2:
806 case NAND_CMD_SEQIN:
807 case NAND_CMD_STATUS:
808 return;
809
810 case NAND_CMD_RESET:
811 if (this->dev_ready)
812 break;
813 udelay(this->chip_delay);
814 WriteDOC(NAND_CMD_STATUS, docptr, Mplus_FlashCmd);
815 WriteDOC(0, docptr, Mplus_WritePipeTerm);
816 WriteDOC(0, docptr, Mplus_WritePipeTerm);
817 while ( !(this->read_byte(mtd) & 0x40));
818 return;
819
820 /* This applies to read commands */
821 default:
822 /*
823 * If we don't have access to the busy pin, we apply the given
824 * command delay
825 */
826 if (!this->dev_ready) {
827 udelay (this->chip_delay);
828 return;
829 }
830 }
831
832 /* Apply this short delay always to ensure that we do wait tWB in
833 * any case on any machine. */
834 ndelay (100);
835 /* wait until command is processed */
836 while (!this->dev_ready(mtd));
837}
838
839static int doc200x_dev_ready(struct mtd_info *mtd)
840{
841 struct nand_chip *this = mtd->priv;
842 struct doc_priv *doc = this->priv;
843 void __iomem *docptr = doc->virtadr;
844
845 if (DoC_is_MillenniumPlus(doc)) {
846 /* 11.4.2 -- must NOP four times before checking FR/B# */
847 DoC_Delay(doc, 4);
848 if ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) {
849 if(debug)
850 printk("not ready\n");
851 return 0;
852 }
853 if (debug)printk("was ready\n");
854 return 1;
855 } else {
856 /* 11.4.2 -- must NOP four times before checking FR/B# */
857 DoC_Delay(doc, 4);
858 if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) {
859 if(debug)
860 printk("not ready\n");
861 return 0;
862 }
863 /* 11.4.2 -- Must NOP twice if it's ready */
864 DoC_Delay(doc, 2);
865 if (debug)printk("was ready\n");
866 return 1;
867 }
868}
869
870static int doc200x_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
871{
872 /* This is our last resort if we couldn't find or create a BBT. Just
873 pretend all blocks are good. */
874 return 0;
875}
876
877static void doc200x_enable_hwecc(struct mtd_info *mtd, int mode)
878{
879 struct nand_chip *this = mtd->priv;
880 struct doc_priv *doc = this->priv;
881 void __iomem *docptr = doc->virtadr;
882
883 /* Prime the ECC engine */
884 switch(mode) {
885 case NAND_ECC_READ:
886 WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
887 WriteDOC(DOC_ECC_EN, docptr, ECCConf);
888 break;
889 case NAND_ECC_WRITE:
890 WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
891 WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
892 break;
893 }
894}
895
896static void doc2001plus_enable_hwecc(struct mtd_info *mtd, int mode)
897{
898 struct nand_chip *this = mtd->priv;
899 struct doc_priv *doc = this->priv;
900 void __iomem *docptr = doc->virtadr;
901
902 /* Prime the ECC engine */
903 switch(mode) {
904 case NAND_ECC_READ:
905 WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
906 WriteDOC(DOC_ECC_EN, docptr, Mplus_ECCConf);
907 break;
908 case NAND_ECC_WRITE:
909 WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
910 WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, Mplus_ECCConf);
911 break;
912 }
913}
914
915/* This code is only called on write */
916static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
917 unsigned char *ecc_code)
918{
919 struct nand_chip *this = mtd->priv;
920 struct doc_priv *doc = this->priv;
921 void __iomem *docptr = doc->virtadr;
922 int i;
923 int emptymatch = 1;
924
925 /* flush the pipeline */
926 if (DoC_is_2000(doc)) {
927 WriteDOC(doc->CDSNControl & ~CDSN_CTRL_FLASH_IO, docptr, CDSNControl);
928 WriteDOC(0, docptr, 2k_CDSN_IO);
929 WriteDOC(0, docptr, 2k_CDSN_IO);
930 WriteDOC(0, docptr, 2k_CDSN_IO);
931 WriteDOC(doc->CDSNControl, docptr, CDSNControl);
932 } else if (DoC_is_MillenniumPlus(doc)) {
933 WriteDOC(0, docptr, Mplus_NOP);
934 WriteDOC(0, docptr, Mplus_NOP);
935 WriteDOC(0, docptr, Mplus_NOP);
936 } else {
937 WriteDOC(0, docptr, NOP);
938 WriteDOC(0, docptr, NOP);
939 WriteDOC(0, docptr, NOP);
940 }
941
942 for (i = 0; i < 6; i++) {
943 if (DoC_is_MillenniumPlus(doc))
944 ecc_code[i] = ReadDOC_(docptr, DoC_Mplus_ECCSyndrome0 + i);
945 else
946 ecc_code[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i);
947 if (ecc_code[i] != empty_write_ecc[i])
948 emptymatch = 0;
949 }
950 if (DoC_is_MillenniumPlus(doc))
951 WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf);
952 else
953 WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
954#if 0
955 /* If emptymatch=1, we might have an all-0xff data buffer. Check. */
956 if (emptymatch) {
957 /* Note: this somewhat expensive test should not be triggered
958 often. It could be optimized away by examining the data in
959 the writebuf routine, and remembering the result. */
960 for (i = 0; i < 512; i++) {
961 if (dat[i] == 0xff) continue;
962 emptymatch = 0;
963 break;
964 }
965 }
966 /* If emptymatch still =1, we do have an all-0xff data buffer.
967 Return all-0xff ecc value instead of the computed one, so
968 it'll look just like a freshly-erased page. */
969 if (emptymatch) memset(ecc_code, 0xff, 6);
970#endif
971 return 0;
972}
973
974static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc)
975{
976 int i, ret = 0;
977 struct nand_chip *this = mtd->priv;
978 struct doc_priv *doc = this->priv;
979 void __iomem *docptr = doc->virtadr;
980 volatile u_char dummy;
981 int emptymatch = 1;
982
983 /* flush the pipeline */
984 if (DoC_is_2000(doc)) {
985 dummy = ReadDOC(docptr, 2k_ECCStatus);
986 dummy = ReadDOC(docptr, 2k_ECCStatus);
987 dummy = ReadDOC(docptr, 2k_ECCStatus);
988 } else if (DoC_is_MillenniumPlus(doc)) {
989 dummy = ReadDOC(docptr, Mplus_ECCConf);
990 dummy = ReadDOC(docptr, Mplus_ECCConf);
991 dummy = ReadDOC(docptr, Mplus_ECCConf);
992 } else {
993 dummy = ReadDOC(docptr, ECCConf);
994 dummy = ReadDOC(docptr, ECCConf);
995 dummy = ReadDOC(docptr, ECCConf);
996 }
997
998 /* Error occured ? */
999 if (dummy & 0x80) {
1000 for (i = 0; i < 6; i++) {
1001 if (DoC_is_MillenniumPlus(doc))
1002 calc_ecc[i] = ReadDOC_(docptr, DoC_Mplus_ECCSyndrome0 + i);
1003 else
1004 calc_ecc[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i);
1005 if (calc_ecc[i] != empty_read_syndrome[i])
1006 emptymatch = 0;
1007 }
1008 /* If emptymatch=1, the read syndrome is consistent with an
1009 all-0xff data and stored ecc block. Check the stored ecc. */
1010 if (emptymatch) {
1011 for (i = 0; i < 6; i++) {
1012 if (read_ecc[i] == 0xff) continue;
1013 emptymatch = 0;
1014 break;
1015 }
1016 }
1017 /* If emptymatch still =1, check the data block. */
1018 if (emptymatch) {
1019 /* Note: this somewhat expensive test should not be triggered
1020 often. It could be optimized away by examining the data in
1021 the readbuf routine, and remembering the result. */
1022 for (i = 0; i < 512; i++) {
1023 if (dat[i] == 0xff) continue;
1024 emptymatch = 0;
1025 break;
1026 }
1027 }
1028 /* If emptymatch still =1, this is almost certainly a freshly-
1029 erased block, in which case the ECC will not come out right.
1030 We'll suppress the error and tell the caller everything's
1031 OK. Because it is. */
1032 if (!emptymatch) ret = doc_ecc_decode (rs_decoder, dat, calc_ecc);
1033 if (ret > 0)
1034 printk(KERN_ERR "doc200x_correct_data corrected %d errors\n", ret);
1035 }
1036 if (DoC_is_MillenniumPlus(doc))
1037 WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf);
1038 else
1039 WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
1040 if (no_ecc_failures && (ret == -1)) {
1041 printk(KERN_ERR "suppressing ECC failure\n");
1042 ret = 0;
1043 }
1044 return ret;
1045}
1046
1047//u_char mydatabuf[528];
1048
1049static struct nand_oobinfo doc200x_oobinfo = {
1050 .useecc = MTD_NANDECC_AUTOPLACE,
1051 .eccbytes = 6,
1052 .eccpos = {0, 1, 2, 3, 4, 5},
1053 .oobfree = { {8, 8} }
1054};
1055
1056/* Find the (I)NFTL Media Header, and optionally also the mirror media header.
1057 On sucessful return, buf will contain a copy of the media header for
1058 further processing. id is the string to scan for, and will presumably be
1059 either "ANAND" or "BNAND". If findmirror=1, also look for the mirror media
1060 header. The page #s of the found media headers are placed in mh0_page and
1061 mh1_page in the DOC private structure. */
1062static int __init find_media_headers(struct mtd_info *mtd, u_char *buf,
1063 const char *id, int findmirror)
1064{
1065 struct nand_chip *this = mtd->priv;
1066 struct doc_priv *doc = this->priv;
1067 unsigned offs, end = (MAX_MEDIAHEADER_SCAN << this->phys_erase_shift);
1068 int ret;
1069 size_t retlen;
1070
1071 end = min(end, mtd->size); // paranoia
1072 for (offs = 0; offs < end; offs += mtd->erasesize) {
1073 ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf);
1074 if (retlen != mtd->oobblock) continue;
1075 if (ret) {
1076 printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n",
1077 offs);
1078 }
1079 if (memcmp(buf, id, 6)) continue;
1080 printk(KERN_INFO "Found DiskOnChip %s Media Header at 0x%x\n", id, offs);
1081 if (doc->mh0_page == -1) {
1082 doc->mh0_page = offs >> this->page_shift;
1083 if (!findmirror) return 1;
1084 continue;
1085 }
1086 doc->mh1_page = offs >> this->page_shift;
1087 return 2;
1088 }
1089 if (doc->mh0_page == -1) {
1090 printk(KERN_WARNING "DiskOnChip %s Media Header not found.\n", id);
1091 return 0;
1092 }
1093 /* Only one mediaheader was found. We want buf to contain a
1094 mediaheader on return, so we'll have to re-read the one we found. */
1095 offs = doc->mh0_page << this->page_shift;
1096 ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf);
1097 if (retlen != mtd->oobblock) {
1098 /* Insanity. Give up. */
1099 printk(KERN_ERR "Read DiskOnChip Media Header once, but can't reread it???\n");
1100 return 0;
1101 }
1102 return 1;
1103}
1104
1105static inline int __init nftl_partscan(struct mtd_info *mtd,
1106 struct mtd_partition *parts)
1107{
1108 struct nand_chip *this = mtd->priv;
1109 struct doc_priv *doc = this->priv;
1110 int ret = 0;
1111 u_char *buf;
1112 struct NFTLMediaHeader *mh;
1113 const unsigned psize = 1 << this->page_shift;
1114 unsigned blocks, maxblocks;
1115 int offs, numheaders;
1116
1117 buf = kmalloc(mtd->oobblock, GFP_KERNEL);
1118 if (!buf) {
1119 printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
1120 return 0;
1121 }
1122 if (!(numheaders=find_media_headers(mtd, buf, "ANAND", 1))) goto out;
1123 mh = (struct NFTLMediaHeader *) buf;
1124
f29a4b86
TG		 1125 mh->NumEraseUnits = le16_to_cpu(mh->NumEraseUnits);
1126 mh->FirstPhysicalEUN = le16_to_cpu(mh->FirstPhysicalEUN);
1127 mh->FormattedSize = le32_to_cpu(mh->FormattedSize);
1128
1da177e4
LT		 1129 printk(KERN_INFO " DataOrgID = %s\n"
1130 " NumEraseUnits = %d\n"
1131 " FirstPhysicalEUN = %d\n"
1132 " FormattedSize = %d\n"
1133 " UnitSizeFactor = %d\n",
1134 mh->DataOrgID, mh->NumEraseUnits,
1135 mh->FirstPhysicalEUN, mh->FormattedSize,
1136 mh->UnitSizeFactor);
1da177e4
LT		 1137
1138 blocks = mtd->size >> this->phys_erase_shift;
1139 maxblocks = min(32768U, mtd->erasesize - psize);
1140
1141 if (mh->UnitSizeFactor == 0x00) {
1142 /* Auto-determine UnitSizeFactor. The constraints are:
1143 - There can be at most 32768 virtual blocks.
1144 - There can be at most (virtual block size - page size)
1145 virtual blocks (because MediaHeader+BBT must fit in 1).
1146 */
1147 mh->UnitSizeFactor = 0xff;
1148 while (blocks > maxblocks) {
1149 blocks >>= 1;
1150 maxblocks = min(32768U, (maxblocks << 1) + psize);
1151 mh->UnitSizeFactor--;
1152 }
1153 printk(KERN_WARNING "UnitSizeFactor=0x00 detected. Correct value is assumed to be 0x%02x.\n", mh->UnitSizeFactor);
1154 }
1155
1156 /* NOTE: The lines below modify internal variables of the NAND and MTD
1157 layers; variables with have already been configured by nand_scan.
1158 Unfortunately, we didn't know before this point what these values
1159 should be. Thus, this code is somewhat dependant on the exact
1160 implementation of the NAND layer. */
1161 if (mh->UnitSizeFactor != 0xff) {
1162 this->bbt_erase_shift += (0xff - mh->UnitSizeFactor);
1163 mtd->erasesize <<= (0xff - mh->UnitSizeFactor);
1164 printk(KERN_INFO "Setting virtual erase size to %d\n", mtd->erasesize);
1165 blocks = mtd->size >> this->bbt_erase_shift;
1166 maxblocks = min(32768U, mtd->erasesize - psize);
1167 }
1168
1169 if (blocks > maxblocks) {
1170 printk(KERN_ERR "UnitSizeFactor of 0x%02x is inconsistent with device size. Aborting.\n", mh->UnitSizeFactor);
1171 goto out;
1172 }
1173
1174 /* Skip past the media headers. */
1175 offs = max(doc->mh0_page, doc->mh1_page);
1176 offs <<= this->page_shift;
1177 offs += mtd->erasesize;
1178
1da177e4
LT		 1179 parts[0].name = " DiskOnChip BDTL partition";
1180 parts[0].offset = offs;
1181 parts[0].size = (mh->NumEraseUnits - numheaders) << this->bbt_erase_shift;
1182
1183 offs += parts[0].size;
1184 if (offs < mtd->size) {
1185 parts[1].name = " DiskOnChip Remainder partition";
1186 parts[1].offset = offs;
1187 parts[1].size = mtd->size - offs;
1188 ret = 2;
1189 goto out;
1190 }
1191 ret = 1;
1192out:
1193 kfree(buf);
1194 return ret;
1195}
1196
1197/* This is a stripped-down copy of the code in inftlmount.c */
1198static inline int __init inftl_partscan(struct mtd_info *mtd,
1199 struct mtd_partition *parts)
1200{
1201 struct nand_chip *this = mtd->priv;
1202 struct doc_priv *doc = this->priv;
1203 int ret = 0;
1204 u_char *buf;
1205 struct INFTLMediaHeader *mh;
1206 struct INFTLPartition *ip;
1207 int numparts = 0;
1208 int blocks;
1209 int vshift, lastvunit = 0;
1210 int i;
1211 int end = mtd->size;
1212
1213 if (inftl_bbt_write)
1214 end -= (INFTL_BBT_RESERVED_BLOCKS << this->phys_erase_shift);
1215
1216 buf = kmalloc(mtd->oobblock, GFP_KERNEL);
1217 if (!buf) {
1218 printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
1219 return 0;
1220 }
1221
1222 if (!find_media_headers(mtd, buf, "BNAND", 0)) goto out;
1223 doc->mh1_page = doc->mh0_page + (4096 >> this->page_shift);
1224 mh = (struct INFTLMediaHeader *) buf;
1225
1226 mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks);
1227 mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions);
1228 mh->NoOfBDTLPartitions = le32_to_cpu(mh->NoOfBDTLPartitions);
1229 mh->BlockMultiplierBits = le32_to_cpu(mh->BlockMultiplierBits);
1230 mh->FormatFlags = le32_to_cpu(mh->FormatFlags);
1231 mh->PercentUsed = le32_to_cpu(mh->PercentUsed);
1232
1da177e4
LT		 1233 printk(KERN_INFO " bootRecordID = %s\n"
1234 " NoOfBootImageBlocks = %d\n"
1235 " NoOfBinaryPartitions = %d\n"
1236 " NoOfBDTLPartitions = %d\n"
1237 " BlockMultiplerBits = %d\n"
1238 " FormatFlgs = %d\n"
1239 " OsakVersion = %d.%d.%d.%d\n"
1240 " PercentUsed = %d\n",
1241 mh->bootRecordID, mh->NoOfBootImageBlocks,
1242 mh->NoOfBinaryPartitions,
1243 mh->NoOfBDTLPartitions,
1244 mh->BlockMultiplierBits, mh->FormatFlags,
1245 ((unsigned char *) &mh->OsakVersion)[0] & 0xf,
1246 ((unsigned char *) &mh->OsakVersion)[1] & 0xf,
1247 ((unsigned char *) &mh->OsakVersion)[2] & 0xf,
1248 ((unsigned char *) &mh->OsakVersion)[3] & 0xf,
1249 mh->PercentUsed);
1da177e4
LT		 1250
1251 vshift = this->phys_erase_shift + mh->BlockMultiplierBits;
1252
1253 blocks = mtd->size >> vshift;
1254 if (blocks > 32768) {
1255 printk(KERN_ERR "BlockMultiplierBits=%d is inconsistent with device size. Aborting.\n", mh->BlockMultiplierBits);
1256 goto out;
1257 }
1258
1259 blocks = doc->chips_per_floor << (this->chip_shift - this->phys_erase_shift);
1260 if (inftl_bbt_write && (blocks > mtd->erasesize)) {
1261 printk(KERN_ERR "Writeable BBTs spanning more than one erase block are not yet supported. FIX ME!\n");
1262 goto out;
1263 }
1264
1265 /* Scan the partitions */
1266 for (i = 0; (i < 4); i++) {
1267 ip = &(mh->Partitions[i]);
1268 ip->virtualUnits = le32_to_cpu(ip->virtualUnits);
1269 ip->firstUnit = le32_to_cpu(ip->firstUnit);
1270 ip->lastUnit = le32_to_cpu(ip->lastUnit);
1271 ip->flags = le32_to_cpu(ip->flags);
1272 ip->spareUnits = le32_to_cpu(ip->spareUnits);
1273 ip->Reserved0 = le32_to_cpu(ip->Reserved0);
1274
1da177e4
LT		 1275 printk(KERN_INFO " PARTITION[%d] ->\n"
1276 " virtualUnits = %d\n"
1277 " firstUnit = %d\n"
1278 " lastUnit = %d\n"
1279 " flags = 0x%x\n"
1280 " spareUnits = %d\n",
1281 i, ip->virtualUnits, ip->firstUnit,
1282 ip->lastUnit, ip->flags,
1283 ip->spareUnits);
1da177e4 1284
39605398 1285#if 0
1da177e4
LT		 1286 if ((i == 0) && (ip->firstUnit > 0)) {
1287 parts[0].name = " DiskOnChip IPL / Media Header partition";
1288 parts[0].offset = 0;
1289 parts[0].size = mtd->erasesize * ip->firstUnit;
1290 numparts = 1;
1291 }
39605398 1292#endif
1da177e4
LT		 1293
1294 if (ip->flags & INFTL_BINARY)
1295 parts[numparts].name = " DiskOnChip BDK partition";
1296 else
1297 parts[numparts].name = " DiskOnChip BDTL partition";
1298 parts[numparts].offset = ip->firstUnit << vshift;
1299 parts[numparts].size = (1 + ip->lastUnit - ip->firstUnit) << vshift;
1300 numparts++;
1301 if (ip->lastUnit > lastvunit) lastvunit = ip->lastUnit;
1302 if (ip->flags & INFTL_LAST) break;
1303 }
1304 lastvunit++;
1305 if ((lastvunit << vshift) < end) {
1306 parts[numparts].name = " DiskOnChip Remainder partition";
1307 parts[numparts].offset = lastvunit << vshift;
1308 parts[numparts].size = end - parts[numparts].offset;
1309 numparts++;
1310 }
1311 ret = numparts;
1312out:
1313 kfree(buf);
1314 return ret;
1315}
1316
1317static int __init nftl_scan_bbt(struct mtd_info *mtd)
1318{
1319 int ret, numparts;
1320 struct nand_chip *this = mtd->priv;
1321 struct doc_priv *doc = this->priv;
1322 struct mtd_partition parts[2];
1323
1324 memset((char *) parts, 0, sizeof(parts));
1325 /* On NFTL, we have to find the media headers before we can read the
1326 BBTs, since they're stored in the media header eraseblocks. */
1327 numparts = nftl_partscan(mtd, parts);
1328 if (!numparts) return -EIO;
1329 this->bbt_td->options = NAND_BBT_ABSPAGE | NAND_BBT_8BIT |
1330 NAND_BBT_SAVECONTENT | NAND_BBT_WRITE |
1331 NAND_BBT_VERSION;
1332 this->bbt_td->veroffs = 7;
1333 this->bbt_td->pages[0] = doc->mh0_page + 1;
1334 if (doc->mh1_page != -1) {
1335 this->bbt_md->options = NAND_BBT_ABSPAGE | NAND_BBT_8BIT |
1336 NAND_BBT_SAVECONTENT | NAND_BBT_WRITE |
1337 NAND_BBT_VERSION;
1338 this->bbt_md->veroffs = 7;
1339 this->bbt_md->pages[0] = doc->mh1_page + 1;
1340 } else {
1341 this->bbt_md = NULL;
1342 }
1343
1344 /* It's safe to set bd=NULL below because NAND_BBT_CREATE is not set.
1345 At least as nand_bbt.c is currently written. */
1346 if ((ret = nand_scan_bbt(mtd, NULL)))
1347 return ret;
1348 add_mtd_device(mtd);
1349#ifdef CONFIG_MTD_PARTITIONS
1350 if (!no_autopart)
1351 add_mtd_partitions(mtd, parts, numparts);
1352#endif
1353 return 0;
1354}
1355
1356static int __init inftl_scan_bbt(struct mtd_info *mtd)
1357{
1358 int ret, numparts;
1359 struct nand_chip *this = mtd->priv;
1360 struct doc_priv *doc = this->priv;
1361 struct mtd_partition parts[5];
1362
1363 if (this->numchips > doc->chips_per_floor) {
1364 printk(KERN_ERR "Multi-floor INFTL devices not yet supported.\n");
1365 return -EIO;
1366 }
1367
1368 if (DoC_is_MillenniumPlus(doc)) {
1369 this->bbt_td->options = NAND_BBT_2BIT | NAND_BBT_ABSPAGE;
1370 if (inftl_bbt_write)
1371 this->bbt_td->options |= NAND_BBT_WRITE;
1372 this->bbt_td->pages[0] = 2;
1373 this->bbt_md = NULL;
1374 } else {
1375 this->bbt_td->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT |
1376 NAND_BBT_VERSION;
1377 if (inftl_bbt_write)
1378 this->bbt_td->options |= NAND_BBT_WRITE;
1379 this->bbt_td->offs = 8;
1380 this->bbt_td->len = 8;
1381 this->bbt_td->veroffs = 7;
1382 this->bbt_td->maxblocks = INFTL_BBT_RESERVED_BLOCKS;
1383 this->bbt_td->reserved_block_code = 0x01;
1384 this->bbt_td->pattern = "MSYS_BBT";
1385
1386 this->bbt_md->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT |
1387 NAND_BBT_VERSION;
1388 if (inftl_bbt_write)
1389 this->bbt_md->options |= NAND_BBT_WRITE;
1390 this->bbt_md->offs = 8;
1391 this->bbt_md->len = 8;
1392 this->bbt_md->veroffs = 7;
1393 this->bbt_md->maxblocks = INFTL_BBT_RESERVED_BLOCKS;
1394 this->bbt_md->reserved_block_code = 0x01;
1395 this->bbt_md->pattern = "TBB_SYSM";
1396 }
1397
1398 /* It's safe to set bd=NULL below because NAND_BBT_CREATE is not set.
1399 At least as nand_bbt.c is currently written. */
1400 if ((ret = nand_scan_bbt(mtd, NULL)))
1401 return ret;
1402 memset((char *) parts, 0, sizeof(parts));
1403 numparts = inftl_partscan(mtd, parts);
1404 /* At least for now, require the INFTL Media Header. We could probably
1405 do without it for non-INFTL use, since all it gives us is
1406 autopartitioning, but I want to give it more thought. */
1407 if (!numparts) return -EIO;
1408 add_mtd_device(mtd);
1409#ifdef CONFIG_MTD_PARTITIONS
1410 if (!no_autopart)
1411 add_mtd_partitions(mtd, parts, numparts);
1412#endif
1413 return 0;
1414}
1415
1416static inline int __init doc2000_init(struct mtd_info *mtd)
1417{
1418 struct nand_chip *this = mtd->priv;
1419 struct doc_priv *doc = this->priv;
1420
1421 this->write_byte = doc2000_write_byte;
1422 this->read_byte = doc2000_read_byte;
1423 this->write_buf = doc2000_writebuf;
1424 this->read_buf = doc2000_readbuf;
1425 this->verify_buf = doc2000_verifybuf;
1426 this->scan_bbt = nftl_scan_bbt;
1427
1428 doc->CDSNControl = CDSN_CTRL_FLASH_IO | CDSN_CTRL_ECC_IO;
1429 doc2000_count_chips(mtd);
1430 mtd->name = "DiskOnChip 2000 (NFTL Model)";
1431 return (4 * doc->chips_per_floor);
1432}
1433
1434static inline int __init doc2001_init(struct mtd_info *mtd)
1435{
1436 struct nand_chip *this = mtd->priv;
1437 struct doc_priv *doc = this->priv;
1438
1439 this->write_byte = doc2001_write_byte;
1440 this->read_byte = doc2001_read_byte;
1441 this->write_buf = doc2001_writebuf;
1442 this->read_buf = doc2001_readbuf;
1443 this->verify_buf = doc2001_verifybuf;
1444
1445 ReadDOC(doc->virtadr, ChipID);
1446 ReadDOC(doc->virtadr, ChipID);
1447 ReadDOC(doc->virtadr, ChipID);
1448 if (ReadDOC(doc->virtadr, ChipID) != DOC_ChipID_DocMil) {
1449 /* It's not a Millennium; it's one of the newer
1450 DiskOnChip 2000 units with a similar ASIC.
1451 Treat it like a Millennium, except that it
1452 can have multiple chips. */
1453 doc2000_count_chips(mtd);
1454 mtd->name = "DiskOnChip 2000 (INFTL Model)";
1455 this->scan_bbt = inftl_scan_bbt;
1456 return (4 * doc->chips_per_floor);
1457 } else {
1458 /* Bog-standard Millennium */
1459 doc->chips_per_floor = 1;
1460 mtd->name = "DiskOnChip Millennium";
1461 this->scan_bbt = nftl_scan_bbt;
1462 return 1;
1463 }
1464}
1465
1466static inline int __init doc2001plus_init(struct mtd_info *mtd)
1467{
1468 struct nand_chip *this = mtd->priv;
1469 struct doc_priv *doc = this->priv;
1470
1471 this->write_byte = NULL;
1472 this->read_byte = doc2001plus_read_byte;
1473 this->write_buf = doc2001plus_writebuf;
1474 this->read_buf = doc2001plus_readbuf;
1475 this->verify_buf = doc2001plus_verifybuf;
1476 this->scan_bbt = inftl_scan_bbt;
1477 this->hwcontrol = NULL;
1478 this->select_chip = doc2001plus_select_chip;
1479 this->cmdfunc = doc2001plus_command;
1480 this->enable_hwecc = doc2001plus_enable_hwecc;
1481
1482 doc->chips_per_floor = 1;
1483 mtd->name = "DiskOnChip Millennium Plus";
1484
1485 return 1;
1486}
1487
1488static inline int __init doc_probe(unsigned long physadr)
1489{
1490 unsigned char ChipID;
1491 struct mtd_info *mtd;
1492 struct nand_chip *nand;
1493 struct doc_priv *doc;
1494 void __iomem *virtadr;
1495 unsigned char save_control;
1496 unsigned char tmp, tmpb, tmpc;
1497 int reg, len, numchips;
1498 int ret = 0;
1499
1500 virtadr = ioremap(physadr, DOC_IOREMAP_LEN);
1501 if (!virtadr) {
1502 printk(KERN_ERR "Diskonchip ioremap failed: 0x%x bytes at 0x%lx\n", DOC_IOREMAP_LEN, physadr);
1503 return -EIO;
1504 }
1505
1506 /* It's not possible to cleanly detect the DiskOnChip - the
1507 * bootup procedure will put the device into reset mode, and
1508 * it's not possible to talk to it without actually writing
1509 * to the DOCControl register. So we store the current contents
1510 * of the DOCControl register's location, in case we later decide
1511 * that it's not a DiskOnChip, and want to put it back how we
1512 * found it.
1513 */
1514 save_control = ReadDOC(virtadr, DOCControl);
1515
1516 /* Reset the DiskOnChip ASIC */
1517 WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
1518 virtadr, DOCControl);
1519 WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
1520 virtadr, DOCControl);
1521
1522 /* Enable the DiskOnChip ASIC */
1523 WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL,
1524 virtadr, DOCControl);
1525 WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL,
1526 virtadr, DOCControl);
1527
1528 ChipID = ReadDOC(virtadr, ChipID);
1529
1530 switch(ChipID) {
1531 case DOC_ChipID_Doc2k:
1532 reg = DoC_2k_ECCStatus;
1533 break;
1534 case DOC_ChipID_DocMil:
1535 reg = DoC_ECCConf;
1536 break;
1537 case DOC_ChipID_DocMilPlus16:
1538 case DOC_ChipID_DocMilPlus32:
1539 case 0:
1540 /* Possible Millennium Plus, need to do more checks */
1541 /* Possibly release from power down mode */
1542 for (tmp = 0; (tmp < 4); tmp++)
1543 ReadDOC(virtadr, Mplus_Power);
1544
1545 /* Reset the Millennium Plus ASIC */
1546 tmp = DOC_MODE_RESET | DOC_MODE_MDWREN | DOC_MODE_RST_LAT |
1547 DOC_MODE_BDECT;
1548 WriteDOC(tmp, virtadr, Mplus_DOCControl);
1549 WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
1550
1551 mdelay(1);
1552 /* Enable the Millennium Plus ASIC */
1553 tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT |
1554 DOC_MODE_BDECT;
1555 WriteDOC(tmp, virtadr, Mplus_DOCControl);
1556 WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
1557 mdelay(1);
1558
1559 ChipID = ReadDOC(virtadr, ChipID);
1560
1561 switch (ChipID) {
1562 case DOC_ChipID_DocMilPlus16:
1563 reg = DoC_Mplus_Toggle;
1564 break;
1565 case DOC_ChipID_DocMilPlus32:
1566 printk(KERN_ERR "DiskOnChip Millennium Plus 32MB is not supported, ignoring.\n");
1567 default:
1568 ret = -ENODEV;
1569 goto notfound;
1570 }
1571 break;
1572
1573 default:
1574 ret = -ENODEV;
1575 goto notfound;
1576 }
1577 /* Check the TOGGLE bit in the ECC register */
1578 tmp = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
1579 tmpb = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
1580 tmpc = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
1581 if ((tmp == tmpb) || (tmp != tmpc)) {
1582 printk(KERN_WARNING "Possible DiskOnChip at 0x%lx failed TOGGLE test, dropping.\n", physadr);
1583 ret = -ENODEV;
1584 goto notfound;
1585 }
1586
1587 for (mtd = doclist; mtd; mtd = doc->nextdoc) {
1588 unsigned char oldval;
1589 unsigned char newval;
1590 nand = mtd->priv;
1591 doc = nand->priv;
1592 /* Use the alias resolution register to determine if this is
1593 in fact the same DOC aliased to a new address. If writes
1594 to one chip's alias resolution register change the value on
1595 the other chip, they're the same chip. */
1596 if (ChipID == DOC_ChipID_DocMilPlus16) {
1597 oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution);
1598 newval = ReadDOC(virtadr, Mplus_AliasResolution);
1599 } else {
1600 oldval = ReadDOC(doc->virtadr, AliasResolution);
1601 newval = ReadDOC(virtadr, AliasResolution);
1602 }
1603 if (oldval != newval)
1604 continue;
1605 if (ChipID == DOC_ChipID_DocMilPlus16) {
1606 WriteDOC(~newval, virtadr, Mplus_AliasResolution);
1607 oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution);
1608 WriteDOC(newval, virtadr, Mplus_AliasResolution); // restore it
1609 } else {
1610 WriteDOC(~newval, virtadr, AliasResolution);
1611 oldval = ReadDOC(doc->virtadr, AliasResolution);
1612 WriteDOC(newval, virtadr, AliasResolution); // restore it
1613 }
1614 newval = ~newval;
1615 if (oldval == newval) {
1616 printk(KERN_DEBUG "Found alias of DOC at 0x%lx to 0x%lx\n", doc->physadr, physadr);
1617 goto notfound;
1618 }
1619 }
1620
1621 printk(KERN_NOTICE "DiskOnChip found at 0x%lx\n", physadr);
1622
1623 len = sizeof(struct mtd_info) +
1624 sizeof(struct nand_chip) +
1625 sizeof(struct doc_priv) +
1626 (2 * sizeof(struct nand_bbt_descr));
1627 mtd = kmalloc(len, GFP_KERNEL);
1628 if (!mtd) {
1629 printk(KERN_ERR "DiskOnChip kmalloc (%d bytes) failed!\n", len);
1630 ret = -ENOMEM;
1631 goto fail;
1632 }
1633 memset(mtd, 0, len);
1634
1635 nand = (struct nand_chip *) (mtd + 1);
1636 doc = (struct doc_priv *) (nand + 1);
1637 nand->bbt_td = (struct nand_bbt_descr *) (doc + 1);
1638 nand->bbt_md = nand->bbt_td + 1;
1639
1640 mtd->priv = nand;
1641 mtd->owner = THIS_MODULE;
1642
1643 nand->priv = doc;
1644 nand->select_chip = doc200x_select_chip;
1645 nand->hwcontrol = doc200x_hwcontrol;
1646 nand->dev_ready = doc200x_dev_ready;
1647 nand->waitfunc = doc200x_wait;
1648 nand->block_bad = doc200x_block_bad;
1649 nand->enable_hwecc = doc200x_enable_hwecc;
1650 nand->calculate_ecc = doc200x_calculate_ecc;
1651 nand->correct_data = doc200x_correct_data;
1652
1653 nand->autooob = &doc200x_oobinfo;
1654 nand->eccmode = NAND_ECC_HW6_512;
1655 nand->options = NAND_USE_FLASH_BBT | NAND_HWECC_SYNDROME;
1656
1657 doc->physadr = physadr;
1658 doc->virtadr = virtadr;
1659 doc->ChipID = ChipID;
1660 doc->curfloor = -1;
1661 doc->curchip = -1;
1662 doc->mh0_page = -1;
1663 doc->mh1_page = -1;
1664 doc->nextdoc = doclist;
1665
1666 if (ChipID == DOC_ChipID_Doc2k)
1667 numchips = doc2000_init(mtd);
1668 else if (ChipID == DOC_ChipID_DocMilPlus16)
1669 numchips = doc2001plus_init(mtd);
1670 else
1671 numchips = doc2001_init(mtd);
1672
1673 if ((ret = nand_scan(mtd, numchips))) {
1674 /* DBB note: i believe nand_release is necessary here, as
1675 buffers may have been allocated in nand_base. Check with
1676 Thomas. FIX ME! */
1677 /* nand_release will call del_mtd_device, but we haven't yet
1678 added it. This is handled without incident by
1679 del_mtd_device, as far as I can tell. */
1680 nand_release(mtd);
1681 kfree(mtd);
1682 goto fail;
1683 }
1684
1685 /* Success! */
1686 doclist = mtd;
1687 return 0;
1688
1689notfound:
1690 /* Put back the contents of the DOCControl register, in case it's not
1691 actually a DiskOnChip. */
1692 WriteDOC(save_control, virtadr, DOCControl);
1693fail:
1694 iounmap(virtadr);
1695 return ret;
1696}
1697
1698static void release_nanddoc(void)
1699{
1700 struct mtd_info *mtd, *nextmtd;
1701 struct nand_chip *nand;
1702 struct doc_priv *doc;
1703
1704 for (mtd = doclist; mtd; mtd = nextmtd) {
1705 nand = mtd->priv;
1706 doc = nand->priv;
1707
1708 nextmtd = doc->nextdoc;
1709 nand_release(mtd);
1710 iounmap(doc->virtadr);
1711 kfree(mtd);
1712 }
1713}
1714
1715static int __init init_nanddoc(void)
1716{
1717 int i, ret = 0;
1718
1719 /* We could create the decoder on demand, if memory is a concern.
1720 * This way we have it handy, if an error happens
1721 *
1722 * Symbolsize is 10 (bits)
1723 * Primitve polynomial is x^10+x^3+1
1724 * first consecutive root is 510
1725 * primitve element to generate roots = 1
1726 * generator polinomial degree = 4
1727 */
1728 rs_decoder = init_rs(10, 0x409, FCR, 1, NROOTS);
1729 if (!rs_decoder) {
1730 printk (KERN_ERR "DiskOnChip: Could not create a RS decoder\n");
1731 return -ENOMEM;
1732 }
1733
1734 if (doc_config_location) {
1735 printk(KERN_INFO "Using configured DiskOnChip probe address 0x%lx\n", doc_config_location);
1736 ret = doc_probe(doc_config_location);
1737 if (ret < 0)
1738 goto outerr;
1739 } else {
1740 for (i=0; (doc_locations[i] != 0xffffffff); i++) {
1741 doc_probe(doc_locations[i]);
1742 }
1743 }
1744 /* No banner message any more. Print a message if no DiskOnChip
1745 found, so the user knows we at least tried. */
1746 if (!doclist) {
1747 printk(KERN_INFO "No valid DiskOnChip devices found\n");
1748 ret = -ENODEV;
1749 goto outerr;
1750 }
1751 return 0;
1752outerr:
1753 free_rs(rs_decoder);
1754 return ret;
1755}
1756
1757static void __exit cleanup_nanddoc(void)
1758{
1759 /* Cleanup the nand/DoC resources */
1760 release_nanddoc();
1761
1762 /* Free the reed solomon resources */
1763 if (rs_decoder) {
1764 free_rs(rs_decoder);
1765 }
1766}
1767
1768module_init(init_nanddoc);
1769module_exit(cleanup_nanddoc);
1770
1771MODULE_LICENSE("GPL");
1772MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
1773MODULE_DESCRIPTION("M-Systems DiskOnChip 2000, Millennium and Millennium Plus device driver\n");
kernel source for telekom puls (alcatel/mediatek)