Loading...
1/* Driver for SanDisk SDDR-09 SmartMedia reader
2 *
3 * (c) 2000, 2001 Robert Baruch (autophile@starband.net)
4 * (c) 2002 Andries Brouwer (aeb@cwi.nl)
5 * Developed with the assistance of:
6 * (c) 2002 Alan Stern <stern@rowland.org>
7 *
8 * The SanDisk SDDR-09 SmartMedia reader uses the Shuttle EUSB-01 chip.
9 * This chip is a programmable USB controller. In the SDDR-09, it has
10 * been programmed to obey a certain limited set of SCSI commands.
11 * This driver translates the "real" SCSI commands to the SDDR-09 SCSI
12 * commands.
13 *
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2, or (at your option) any
17 * later version.
18 *
19 * This program is distributed in the hope that it will be useful, but
20 * WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 * General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29/*
30 * Known vendor commands: 12 bytes, first byte is opcode
31 *
32 * E7: read scatter gather
33 * E8: read
34 * E9: write
35 * EA: erase
36 * EB: reset
37 * EC: read status
38 * ED: read ID
39 * EE: write CIS (?)
40 * EF: compute checksum (?)
41 */
42
43#include <linux/errno.h>
44#include <linux/module.h>
45#include <linux/slab.h>
46
47#include <scsi/scsi.h>
48#include <scsi/scsi_cmnd.h>
49#include <scsi/scsi_device.h>
50
51#include "usb.h"
52#include "transport.h"
53#include "protocol.h"
54#include "debug.h"
55
56MODULE_DESCRIPTION("Driver for SanDisk SDDR-09 SmartMedia reader");
57MODULE_AUTHOR("Andries Brouwer <aeb@cwi.nl>, Robert Baruch <autophile@starband.net>");
58MODULE_LICENSE("GPL");
59
60static int usb_stor_sddr09_dpcm_init(struct us_data *us);
61static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us);
62static int usb_stor_sddr09_init(struct us_data *us);
63
64
65/*
66 * The table of devices
67 */
68#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
69 vendorName, productName, useProtocol, useTransport, \
70 initFunction, flags) \
71{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
72 .driver_info = (flags)|(USB_US_TYPE_STOR<<24) }
73
74struct usb_device_id sddr09_usb_ids[] = {
75# include "unusual_sddr09.h"
76 { } /* Terminating entry */
77};
78MODULE_DEVICE_TABLE(usb, sddr09_usb_ids);
79
80#undef UNUSUAL_DEV
81
82/*
83 * The flags table
84 */
85#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
86 vendor_name, product_name, use_protocol, use_transport, \
87 init_function, Flags) \
88{ \
89 .vendorName = vendor_name, \
90 .productName = product_name, \
91 .useProtocol = use_protocol, \
92 .useTransport = use_transport, \
93 .initFunction = init_function, \
94}
95
96static struct us_unusual_dev sddr09_unusual_dev_list[] = {
97# include "unusual_sddr09.h"
98 { } /* Terminating entry */
99};
100
101#undef UNUSUAL_DEV
102
103
104#define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) )
105#define LSB_of(s) ((s)&0xFF)
106#define MSB_of(s) ((s)>>8)
107
108/* #define US_DEBUGP printk */
109
110/*
111 * First some stuff that does not belong here:
112 * data on SmartMedia and other cards, completely
113 * unrelated to this driver.
114 * Similar stuff occurs in <linux/mtd/nand_ids.h>.
115 */
116
117struct nand_flash_dev {
118 int model_id;
119 int chipshift; /* 1<<cs bytes total capacity */
120 char pageshift; /* 1<<ps bytes in a page */
121 char blockshift; /* 1<<bs pages in an erase block */
122 char zoneshift; /* 1<<zs blocks in a zone */
123 /* # of logical blocks is 125/128 of this */
124 char pageadrlen; /* length of an address in bytes - 1 */
125};
126
127/*
128 * NAND Flash Manufacturer ID Codes
129 */
130#define NAND_MFR_AMD 0x01
131#define NAND_MFR_NATSEMI 0x8f
132#define NAND_MFR_TOSHIBA 0x98
133#define NAND_MFR_SAMSUNG 0xec
134
135static inline char *nand_flash_manufacturer(int manuf_id) {
136 switch(manuf_id) {
137 case NAND_MFR_AMD:
138 return "AMD";
139 case NAND_MFR_NATSEMI:
140 return "NATSEMI";
141 case NAND_MFR_TOSHIBA:
142 return "Toshiba";
143 case NAND_MFR_SAMSUNG:
144 return "Samsung";
145 default:
146 return "unknown";
147 }
148}
149
150/*
151 * It looks like it is unnecessary to attach manufacturer to the
152 * remaining data: SSFDC prescribes manufacturer-independent id codes.
153 *
154 * 256 MB NAND flash has a 5-byte ID with 2nd byte 0xaa, 0xba, 0xca or 0xda.
155 */
156
157static struct nand_flash_dev nand_flash_ids[] = {
158 /* NAND flash */
159 { 0x6e, 20, 8, 4, 8, 2}, /* 1 MB */
160 { 0xe8, 20, 8, 4, 8, 2}, /* 1 MB */
161 { 0xec, 20, 8, 4, 8, 2}, /* 1 MB */
162 { 0x64, 21, 8, 4, 9, 2}, /* 2 MB */
163 { 0xea, 21, 8, 4, 9, 2}, /* 2 MB */
164 { 0x6b, 22, 9, 4, 9, 2}, /* 4 MB */
165 { 0xe3, 22, 9, 4, 9, 2}, /* 4 MB */
166 { 0xe5, 22, 9, 4, 9, 2}, /* 4 MB */
167 { 0xe6, 23, 9, 4, 10, 2}, /* 8 MB */
168 { 0x73, 24, 9, 5, 10, 2}, /* 16 MB */
169 { 0x75, 25, 9, 5, 10, 2}, /* 32 MB */
170 { 0x76, 26, 9, 5, 10, 3}, /* 64 MB */
171 { 0x79, 27, 9, 5, 10, 3}, /* 128 MB */
172
173 /* MASK ROM */
174 { 0x5d, 21, 9, 4, 8, 2}, /* 2 MB */
175 { 0xd5, 22, 9, 4, 9, 2}, /* 4 MB */
176 { 0xd6, 23, 9, 4, 10, 2}, /* 8 MB */
177 { 0x57, 24, 9, 4, 11, 2}, /* 16 MB */
178 { 0x58, 25, 9, 4, 12, 2}, /* 32 MB */
179 { 0,}
180};
181
182static struct nand_flash_dev *
183nand_find_id(unsigned char id) {
184 int i;
185
186 for (i = 0; i < ARRAY_SIZE(nand_flash_ids); i++)
187 if (nand_flash_ids[i].model_id == id)
188 return &(nand_flash_ids[i]);
189 return NULL;
190}
191
192/*
193 * ECC computation.
194 */
195static unsigned char parity[256];
196static unsigned char ecc2[256];
197
198static void nand_init_ecc(void) {
199 int i, j, a;
200
201 parity[0] = 0;
202 for (i = 1; i < 256; i++)
203 parity[i] = (parity[i&(i-1)] ^ 1);
204
205 for (i = 0; i < 256; i++) {
206 a = 0;
207 for (j = 0; j < 8; j++) {
208 if (i & (1<<j)) {
209 if ((j & 1) == 0)
210 a ^= 0x04;
211 if ((j & 2) == 0)
212 a ^= 0x10;
213 if ((j & 4) == 0)
214 a ^= 0x40;
215 }
216 }
217 ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0));
218 }
219}
220
221/* compute 3-byte ecc on 256 bytes */
222static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) {
223 int i, j, a;
224 unsigned char par, bit, bits[8];
225
226 par = 0;
227 for (j = 0; j < 8; j++)
228 bits[j] = 0;
229
230 /* collect 16 checksum bits */
231 for (i = 0; i < 256; i++) {
232 par ^= data[i];
233 bit = parity[data[i]];
234 for (j = 0; j < 8; j++)
235 if ((i & (1<<j)) == 0)
236 bits[j] ^= bit;
237 }
238
239 /* put 4+4+4 = 12 bits in the ecc */
240 a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0];
241 ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0));
242
243 a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4];
244 ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0));
245
246 ecc[2] = ecc2[par];
247}
248
249static int nand_compare_ecc(unsigned char *data, unsigned char *ecc) {
250 return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]);
251}
252
253static void nand_store_ecc(unsigned char *data, unsigned char *ecc) {
254 memcpy(data, ecc, 3);
255}
256
257/*
258 * The actual driver starts here.
259 */
260
261struct sddr09_card_info {
262 unsigned long capacity; /* Size of card in bytes */
263 int pagesize; /* Size of page in bytes */
264 int pageshift; /* log2 of pagesize */
265 int blocksize; /* Size of block in pages */
266 int blockshift; /* log2 of blocksize */
267 int blockmask; /* 2^blockshift - 1 */
268 int *lba_to_pba; /* logical to physical map */
269 int *pba_to_lba; /* physical to logical map */
270 int lbact; /* number of available pages */
271 int flags;
272#define SDDR09_WP 1 /* write protected */
273};
274
275/*
276 * On my 16MB card, control blocks have size 64 (16 real control bytes,
277 * and 48 junk bytes). In reality of course the card uses 16 control bytes,
278 * so the reader makes up the remaining 48. Don't know whether these numbers
279 * depend on the card. For now a constant.
280 */
281#define CONTROL_SHIFT 6
282
283/*
284 * On my Combo CF/SM reader, the SM reader has LUN 1.
285 * (and things fail with LUN 0).
286 * It seems LUN is irrelevant for others.
287 */
288#define LUN 1
289#define LUNBITS (LUN << 5)
290
291/*
292 * LBA and PBA are unsigned ints. Special values.
293 */
294#define UNDEF 0xffffffff
295#define SPARE 0xfffffffe
296#define UNUSABLE 0xfffffffd
297
298static const int erase_bad_lba_entries = 0;
299
300/* send vendor interface command (0x41) */
301/* called for requests 0, 1, 8 */
302static int
303sddr09_send_command(struct us_data *us,
304 unsigned char request,
305 unsigned char direction,
306 unsigned char *xfer_data,
307 unsigned int xfer_len) {
308 unsigned int pipe;
309 unsigned char requesttype = (0x41 | direction);
310 int rc;
311
312 // Get the receive or send control pipe number
313
314 if (direction == USB_DIR_IN)
315 pipe = us->recv_ctrl_pipe;
316 else
317 pipe = us->send_ctrl_pipe;
318
319 rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype,
320 0, 0, xfer_data, xfer_len);
321 switch (rc) {
322 case USB_STOR_XFER_GOOD: return 0;
323 case USB_STOR_XFER_STALLED: return -EPIPE;
324 default: return -EIO;
325 }
326}
327
328static int
329sddr09_send_scsi_command(struct us_data *us,
330 unsigned char *command,
331 unsigned int command_len) {
332 return sddr09_send_command(us, 0, USB_DIR_OUT, command, command_len);
333}
334
335#if 0
336/*
337 * Test Unit Ready Command: 12 bytes.
338 * byte 0: opcode: 00
339 */
340static int
341sddr09_test_unit_ready(struct us_data *us) {
342 unsigned char *command = us->iobuf;
343 int result;
344
345 memset(command, 0, 6);
346 command[1] = LUNBITS;
347
348 result = sddr09_send_scsi_command(us, command, 6);
349
350 US_DEBUGP("sddr09_test_unit_ready returns %d\n", result);
351
352 return result;
353}
354#endif
355
356/*
357 * Request Sense Command: 12 bytes.
358 * byte 0: opcode: 03
359 * byte 4: data length
360 */
361static int
362sddr09_request_sense(struct us_data *us, unsigned char *sensebuf, int buflen) {
363 unsigned char *command = us->iobuf;
364 int result;
365
366 memset(command, 0, 12);
367 command[0] = 0x03;
368 command[1] = LUNBITS;
369 command[4] = buflen;
370
371 result = sddr09_send_scsi_command(us, command, 12);
372 if (result)
373 return result;
374
375 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
376 sensebuf, buflen, NULL);
377 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
378}
379
380/*
381 * Read Command: 12 bytes.
382 * byte 0: opcode: E8
383 * byte 1: last two bits: 00: read data, 01: read blockwise control,
384 * 10: read both, 11: read pagewise control.
385 * It turns out we need values 20, 21, 22, 23 here (LUN 1).
386 * bytes 2-5: address (interpretation depends on byte 1, see below)
387 * bytes 10-11: count (idem)
388 *
389 * A page has 512 data bytes and 64 control bytes (16 control and 48 junk).
390 * A read data command gets data in 512-byte pages.
391 * A read control command gets control in 64-byte chunks.
392 * A read both command gets data+control in 576-byte chunks.
393 *
394 * Blocks are groups of 32 pages, and read blockwise control jumps to the
395 * next block, while read pagewise control jumps to the next page after
396 * reading a group of 64 control bytes.
397 * [Here 512 = 1<<pageshift, 32 = 1<<blockshift, 64 is constant?]
398 *
399 * (1 MB and 2 MB cards are a bit different, but I have only a 16 MB card.)
400 */
401
402static int
403sddr09_readX(struct us_data *us, int x, unsigned long fromaddress,
404 int nr_of_pages, int bulklen, unsigned char *buf,
405 int use_sg) {
406
407 unsigned char *command = us->iobuf;
408 int result;
409
410 command[0] = 0xE8;
411 command[1] = LUNBITS | x;
412 command[2] = MSB_of(fromaddress>>16);
413 command[3] = LSB_of(fromaddress>>16);
414 command[4] = MSB_of(fromaddress & 0xFFFF);
415 command[5] = LSB_of(fromaddress & 0xFFFF);
416 command[6] = 0;
417 command[7] = 0;
418 command[8] = 0;
419 command[9] = 0;
420 command[10] = MSB_of(nr_of_pages);
421 command[11] = LSB_of(nr_of_pages);
422
423 result = sddr09_send_scsi_command(us, command, 12);
424
425 if (result) {
426 US_DEBUGP("Result for send_control in sddr09_read2%d %d\n",
427 x, result);
428 return result;
429 }
430
431 result = usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe,
432 buf, bulklen, use_sg, NULL);
433
434 if (result != USB_STOR_XFER_GOOD) {
435 US_DEBUGP("Result for bulk_transfer in sddr09_read2%d %d\n",
436 x, result);
437 return -EIO;
438 }
439 return 0;
440}
441
442/*
443 * Read Data
444 *
445 * fromaddress counts data shorts:
446 * increasing it by 256 shifts the bytestream by 512 bytes;
447 * the last 8 bits are ignored.
448 *
449 * nr_of_pages counts pages of size (1 << pageshift).
450 */
451static int
452sddr09_read20(struct us_data *us, unsigned long fromaddress,
453 int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) {
454 int bulklen = nr_of_pages << pageshift;
455
456 /* The last 8 bits of fromaddress are ignored. */
457 return sddr09_readX(us, 0, fromaddress, nr_of_pages, bulklen,
458 buf, use_sg);
459}
460
461/*
462 * Read Blockwise Control
463 *
464 * fromaddress gives the starting position (as in read data;
465 * the last 8 bits are ignored); increasing it by 32*256 shifts
466 * the output stream by 64 bytes.
467 *
468 * count counts control groups of size (1 << controlshift).
469 * For me, controlshift = 6. Is this constant?
470 *
471 * After getting one control group, jump to the next block
472 * (fromaddress += 8192).
473 */
474static int
475sddr09_read21(struct us_data *us, unsigned long fromaddress,
476 int count, int controlshift, unsigned char *buf, int use_sg) {
477
478 int bulklen = (count << controlshift);
479 return sddr09_readX(us, 1, fromaddress, count, bulklen,
480 buf, use_sg);
481}
482
483/*
484 * Read both Data and Control
485 *
486 * fromaddress counts data shorts, ignoring control:
487 * increasing it by 256 shifts the bytestream by 576 = 512+64 bytes;
488 * the last 8 bits are ignored.
489 *
490 * nr_of_pages counts pages of size (1 << pageshift) + (1 << controlshift).
491 */
492static int
493sddr09_read22(struct us_data *us, unsigned long fromaddress,
494 int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) {
495
496 int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT);
497 US_DEBUGP("sddr09_read22: reading %d pages, %d bytes\n",
498 nr_of_pages, bulklen);
499 return sddr09_readX(us, 2, fromaddress, nr_of_pages, bulklen,
500 buf, use_sg);
501}
502
503#if 0
504/*
505 * Read Pagewise Control
506 *
507 * fromaddress gives the starting position (as in read data;
508 * the last 8 bits are ignored); increasing it by 256 shifts
509 * the output stream by 64 bytes.
510 *
511 * count counts control groups of size (1 << controlshift).
512 * For me, controlshift = 6. Is this constant?
513 *
514 * After getting one control group, jump to the next page
515 * (fromaddress += 256).
516 */
517static int
518sddr09_read23(struct us_data *us, unsigned long fromaddress,
519 int count, int controlshift, unsigned char *buf, int use_sg) {
520
521 int bulklen = (count << controlshift);
522 return sddr09_readX(us, 3, fromaddress, count, bulklen,
523 buf, use_sg);
524}
525#endif
526
527/*
528 * Erase Command: 12 bytes.
529 * byte 0: opcode: EA
530 * bytes 6-9: erase address (big-endian, counting shorts, sector aligned).
531 *
532 * Always precisely one block is erased; bytes 2-5 and 10-11 are ignored.
533 * The byte address being erased is 2*Eaddress.
534 * The CIS cannot be erased.
535 */
536static int
537sddr09_erase(struct us_data *us, unsigned long Eaddress) {
538 unsigned char *command = us->iobuf;
539 int result;
540
541 US_DEBUGP("sddr09_erase: erase address %lu\n", Eaddress);
542
543 memset(command, 0, 12);
544 command[0] = 0xEA;
545 command[1] = LUNBITS;
546 command[6] = MSB_of(Eaddress>>16);
547 command[7] = LSB_of(Eaddress>>16);
548 command[8] = MSB_of(Eaddress & 0xFFFF);
549 command[9] = LSB_of(Eaddress & 0xFFFF);
550
551 result = sddr09_send_scsi_command(us, command, 12);
552
553 if (result)
554 US_DEBUGP("Result for send_control in sddr09_erase %d\n",
555 result);
556
557 return result;
558}
559
560/*
561 * Write CIS Command: 12 bytes.
562 * byte 0: opcode: EE
563 * bytes 2-5: write address in shorts
564 * bytes 10-11: sector count
565 *
566 * This writes at the indicated address. Don't know how it differs
567 * from E9. Maybe it does not erase? However, it will also write to
568 * the CIS.
569 *
570 * When two such commands on the same page follow each other directly,
571 * the second one is not done.
572 */
573
574/*
575 * Write Command: 12 bytes.
576 * byte 0: opcode: E9
577 * bytes 2-5: write address (big-endian, counting shorts, sector aligned).
578 * bytes 6-9: erase address (big-endian, counting shorts, sector aligned).
579 * bytes 10-11: sector count (big-endian, in 512-byte sectors).
580 *
581 * If write address equals erase address, the erase is done first,
582 * otherwise the write is done first. When erase address equals zero
583 * no erase is done?
584 */
585static int
586sddr09_writeX(struct us_data *us,
587 unsigned long Waddress, unsigned long Eaddress,
588 int nr_of_pages, int bulklen, unsigned char *buf, int use_sg) {
589
590 unsigned char *command = us->iobuf;
591 int result;
592
593 command[0] = 0xE9;
594 command[1] = LUNBITS;
595
596 command[2] = MSB_of(Waddress>>16);
597 command[3] = LSB_of(Waddress>>16);
598 command[4] = MSB_of(Waddress & 0xFFFF);
599 command[5] = LSB_of(Waddress & 0xFFFF);
600
601 command[6] = MSB_of(Eaddress>>16);
602 command[7] = LSB_of(Eaddress>>16);
603 command[8] = MSB_of(Eaddress & 0xFFFF);
604 command[9] = LSB_of(Eaddress & 0xFFFF);
605
606 command[10] = MSB_of(nr_of_pages);
607 command[11] = LSB_of(nr_of_pages);
608
609 result = sddr09_send_scsi_command(us, command, 12);
610
611 if (result) {
612 US_DEBUGP("Result for send_control in sddr09_writeX %d\n",
613 result);
614 return result;
615 }
616
617 result = usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe,
618 buf, bulklen, use_sg, NULL);
619
620 if (result != USB_STOR_XFER_GOOD) {
621 US_DEBUGP("Result for bulk_transfer in sddr09_writeX %d\n",
622 result);
623 return -EIO;
624 }
625 return 0;
626}
627
628/* erase address, write same address */
629static int
630sddr09_write_inplace(struct us_data *us, unsigned long address,
631 int nr_of_pages, int pageshift, unsigned char *buf,
632 int use_sg) {
633 int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT);
634 return sddr09_writeX(us, address, address, nr_of_pages, bulklen,
635 buf, use_sg);
636}
637
638#if 0
639/*
640 * Read Scatter Gather Command: 3+4n bytes.
641 * byte 0: opcode E7
642 * byte 2: n
643 * bytes 4i-1,4i,4i+1: page address
644 * byte 4i+2: page count
645 * (i=1..n)
646 *
647 * This reads several pages from the card to a single memory buffer.
648 * The last two bits of byte 1 have the same meaning as for E8.
649 */
650static int
651sddr09_read_sg_test_only(struct us_data *us) {
652 unsigned char *command = us->iobuf;
653 int result, bulklen, nsg, ct;
654 unsigned char *buf;
655 unsigned long address;
656
657 nsg = bulklen = 0;
658 command[0] = 0xE7;
659 command[1] = LUNBITS;
660 command[2] = 0;
661 address = 040000; ct = 1;
662 nsg++;
663 bulklen += (ct << 9);
664 command[4*nsg+2] = ct;
665 command[4*nsg+1] = ((address >> 9) & 0xFF);
666 command[4*nsg+0] = ((address >> 17) & 0xFF);
667 command[4*nsg-1] = ((address >> 25) & 0xFF);
668
669 address = 0340000; ct = 1;
670 nsg++;
671 bulklen += (ct << 9);
672 command[4*nsg+2] = ct;
673 command[4*nsg+1] = ((address >> 9) & 0xFF);
674 command[4*nsg+0] = ((address >> 17) & 0xFF);
675 command[4*nsg-1] = ((address >> 25) & 0xFF);
676
677 address = 01000000; ct = 2;
678 nsg++;
679 bulklen += (ct << 9);
680 command[4*nsg+2] = ct;
681 command[4*nsg+1] = ((address >> 9) & 0xFF);
682 command[4*nsg+0] = ((address >> 17) & 0xFF);
683 command[4*nsg-1] = ((address >> 25) & 0xFF);
684
685 command[2] = nsg;
686
687 result = sddr09_send_scsi_command(us, command, 4*nsg+3);
688
689 if (result) {
690 US_DEBUGP("Result for send_control in sddr09_read_sg %d\n",
691 result);
692 return result;
693 }
694
695 buf = kmalloc(bulklen, GFP_NOIO);
696 if (!buf)
697 return -ENOMEM;
698
699 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
700 buf, bulklen, NULL);
701 kfree(buf);
702 if (result != USB_STOR_XFER_GOOD) {
703 US_DEBUGP("Result for bulk_transfer in sddr09_read_sg %d\n",
704 result);
705 return -EIO;
706 }
707
708 return 0;
709}
710#endif
711
712/*
713 * Read Status Command: 12 bytes.
714 * byte 0: opcode: EC
715 *
716 * Returns 64 bytes, all zero except for the first.
717 * bit 0: 1: Error
718 * bit 5: 1: Suspended
719 * bit 6: 1: Ready
720 * bit 7: 1: Not write-protected
721 */
722
723static int
724sddr09_read_status(struct us_data *us, unsigned char *status) {
725
726 unsigned char *command = us->iobuf;
727 unsigned char *data = us->iobuf;
728 int result;
729
730 US_DEBUGP("Reading status...\n");
731
732 memset(command, 0, 12);
733 command[0] = 0xEC;
734 command[1] = LUNBITS;
735
736 result = sddr09_send_scsi_command(us, command, 12);
737 if (result)
738 return result;
739
740 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
741 data, 64, NULL);
742 *status = data[0];
743 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
744}
745
746static int
747sddr09_read_data(struct us_data *us,
748 unsigned long address,
749 unsigned int sectors) {
750
751 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
752 unsigned char *buffer;
753 unsigned int lba, maxlba, pba;
754 unsigned int page, pages;
755 unsigned int len, offset;
756 struct scatterlist *sg;
757 int result;
758
759 // Figure out the initial LBA and page
760 lba = address >> info->blockshift;
761 page = (address & info->blockmask);
762 maxlba = info->capacity >> (info->pageshift + info->blockshift);
763 if (lba >= maxlba)
764 return -EIO;
765
766 // Since we only read in one block at a time, we have to create
767 // a bounce buffer and move the data a piece at a time between the
768 // bounce buffer and the actual transfer buffer.
769
770 len = min(sectors, (unsigned int) info->blocksize) * info->pagesize;
771 buffer = kmalloc(len, GFP_NOIO);
772 if (buffer == NULL) {
773 printk(KERN_WARNING "sddr09_read_data: Out of memory\n");
774 return -ENOMEM;
775 }
776
777 // This could be made much more efficient by checking for
778 // contiguous LBA's. Another exercise left to the student.
779
780 result = 0;
781 offset = 0;
782 sg = NULL;
783
784 while (sectors > 0) {
785
786 /* Find number of pages we can read in this block */
787 pages = min(sectors, info->blocksize - page);
788 len = pages << info->pageshift;
789
790 /* Not overflowing capacity? */
791 if (lba >= maxlba) {
792 US_DEBUGP("Error: Requested lba %u exceeds "
793 "maximum %u\n", lba, maxlba);
794 result = -EIO;
795 break;
796 }
797
798 /* Find where this lba lives on disk */
799 pba = info->lba_to_pba[lba];
800
801 if (pba == UNDEF) { /* this lba was never written */
802
803 US_DEBUGP("Read %d zero pages (LBA %d) page %d\n",
804 pages, lba, page);
805
806 /* This is not really an error. It just means
807 that the block has never been written.
808 Instead of returning an error
809 it is better to return all zero data. */
810
811 memset(buffer, 0, len);
812
813 } else {
814 US_DEBUGP("Read %d pages, from PBA %d"
815 " (LBA %d) page %d\n",
816 pages, pba, lba, page);
817
818 address = ((pba << info->blockshift) + page) <<
819 info->pageshift;
820
821 result = sddr09_read20(us, address>>1,
822 pages, info->pageshift, buffer, 0);
823 if (result)
824 break;
825 }
826
827 // Store the data in the transfer buffer
828 usb_stor_access_xfer_buf(buffer, len, us->srb,
829 &sg, &offset, TO_XFER_BUF);
830
831 page = 0;
832 lba++;
833 sectors -= pages;
834 }
835
836 kfree(buffer);
837 return result;
838}
839
840static unsigned int
841sddr09_find_unused_pba(struct sddr09_card_info *info, unsigned int lba) {
842 static unsigned int lastpba = 1;
843 int zonestart, end, i;
844
845 zonestart = (lba/1000) << 10;
846 end = info->capacity >> (info->blockshift + info->pageshift);
847 end -= zonestart;
848 if (end > 1024)
849 end = 1024;
850
851 for (i = lastpba+1; i < end; i++) {
852 if (info->pba_to_lba[zonestart+i] == UNDEF) {
853 lastpba = i;
854 return zonestart+i;
855 }
856 }
857 for (i = 0; i <= lastpba; i++) {
858 if (info->pba_to_lba[zonestart+i] == UNDEF) {
859 lastpba = i;
860 return zonestart+i;
861 }
862 }
863 return 0;
864}
865
866static int
867sddr09_write_lba(struct us_data *us, unsigned int lba,
868 unsigned int page, unsigned int pages,
869 unsigned char *ptr, unsigned char *blockbuffer) {
870
871 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
872 unsigned long address;
873 unsigned int pba, lbap;
874 unsigned int pagelen;
875 unsigned char *bptr, *cptr, *xptr;
876 unsigned char ecc[3];
877 int i, result, isnew;
878
879 lbap = ((lba % 1000) << 1) | 0x1000;
880 if (parity[MSB_of(lbap) ^ LSB_of(lbap)])
881 lbap ^= 1;
882 pba = info->lba_to_pba[lba];
883 isnew = 0;
884
885 if (pba == UNDEF) {
886 pba = sddr09_find_unused_pba(info, lba);
887 if (!pba) {
888 printk(KERN_WARNING
889 "sddr09_write_lba: Out of unused blocks\n");
890 return -ENOSPC;
891 }
892 info->pba_to_lba[pba] = lba;
893 info->lba_to_pba[lba] = pba;
894 isnew = 1;
895 }
896
897 if (pba == 1) {
898 /* Maybe it is impossible to write to PBA 1.
899 Fake success, but don't do anything. */
900 printk(KERN_WARNING "sddr09: avoid writing to pba 1\n");
901 return 0;
902 }
903
904 pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
905
906 /* read old contents */
907 address = (pba << (info->pageshift + info->blockshift));
908 result = sddr09_read22(us, address>>1, info->blocksize,
909 info->pageshift, blockbuffer, 0);
910 if (result)
911 return result;
912
913 /* check old contents and fill lba */
914 for (i = 0; i < info->blocksize; i++) {
915 bptr = blockbuffer + i*pagelen;
916 cptr = bptr + info->pagesize;
917 nand_compute_ecc(bptr, ecc);
918 if (!nand_compare_ecc(cptr+13, ecc)) {
919 US_DEBUGP("Warning: bad ecc in page %d- of pba %d\n",
920 i, pba);
921 nand_store_ecc(cptr+13, ecc);
922 }
923 nand_compute_ecc(bptr+(info->pagesize / 2), ecc);
924 if (!nand_compare_ecc(cptr+8, ecc)) {
925 US_DEBUGP("Warning: bad ecc in page %d+ of pba %d\n",
926 i, pba);
927 nand_store_ecc(cptr+8, ecc);
928 }
929 cptr[6] = cptr[11] = MSB_of(lbap);
930 cptr[7] = cptr[12] = LSB_of(lbap);
931 }
932
933 /* copy in new stuff and compute ECC */
934 xptr = ptr;
935 for (i = page; i < page+pages; i++) {
936 bptr = blockbuffer + i*pagelen;
937 cptr = bptr + info->pagesize;
938 memcpy(bptr, xptr, info->pagesize);
939 xptr += info->pagesize;
940 nand_compute_ecc(bptr, ecc);
941 nand_store_ecc(cptr+13, ecc);
942 nand_compute_ecc(bptr+(info->pagesize / 2), ecc);
943 nand_store_ecc(cptr+8, ecc);
944 }
945
946 US_DEBUGP("Rewrite PBA %d (LBA %d)\n", pba, lba);
947
948 result = sddr09_write_inplace(us, address>>1, info->blocksize,
949 info->pageshift, blockbuffer, 0);
950
951 US_DEBUGP("sddr09_write_inplace returns %d\n", result);
952
953#if 0
954 {
955 unsigned char status = 0;
956 int result2 = sddr09_read_status(us, &status);
957 if (result2)
958 US_DEBUGP("sddr09_write_inplace: cannot read status\n");
959 else if (status != 0xc0)
960 US_DEBUGP("sddr09_write_inplace: status after write: 0x%x\n",
961 status);
962 }
963#endif
964
965#if 0
966 {
967 int result2 = sddr09_test_unit_ready(us);
968 }
969#endif
970
971 return result;
972}
973
974static int
975sddr09_write_data(struct us_data *us,
976 unsigned long address,
977 unsigned int sectors) {
978
979 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
980 unsigned int lba, maxlba, page, pages;
981 unsigned int pagelen, blocklen;
982 unsigned char *blockbuffer;
983 unsigned char *buffer;
984 unsigned int len, offset;
985 struct scatterlist *sg;
986 int result;
987
988 // Figure out the initial LBA and page
989 lba = address >> info->blockshift;
990 page = (address & info->blockmask);
991 maxlba = info->capacity >> (info->pageshift + info->blockshift);
992 if (lba >= maxlba)
993 return -EIO;
994
995 // blockbuffer is used for reading in the old data, overwriting
996 // with the new data, and performing ECC calculations
997
998 /* TODO: instead of doing kmalloc/kfree for each write,
999 add a bufferpointer to the info structure */
1000
1001 pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
1002 blocklen = (pagelen << info->blockshift);
1003 blockbuffer = kmalloc(blocklen, GFP_NOIO);
1004 if (!blockbuffer) {
1005 printk(KERN_WARNING "sddr09_write_data: Out of memory\n");
1006 return -ENOMEM;
1007 }
1008
1009 // Since we don't write the user data directly to the device,
1010 // we have to create a bounce buffer and move the data a piece
1011 // at a time between the bounce buffer and the actual transfer buffer.
1012
1013 len = min(sectors, (unsigned int) info->blocksize) * info->pagesize;
1014 buffer = kmalloc(len, GFP_NOIO);
1015 if (buffer == NULL) {
1016 printk(KERN_WARNING "sddr09_write_data: Out of memory\n");
1017 kfree(blockbuffer);
1018 return -ENOMEM;
1019 }
1020
1021 result = 0;
1022 offset = 0;
1023 sg = NULL;
1024
1025 while (sectors > 0) {
1026
1027 // Write as many sectors as possible in this block
1028
1029 pages = min(sectors, info->blocksize - page);
1030 len = (pages << info->pageshift);
1031
1032 /* Not overflowing capacity? */
1033 if (lba >= maxlba) {
1034 US_DEBUGP("Error: Requested lba %u exceeds "
1035 "maximum %u\n", lba, maxlba);
1036 result = -EIO;
1037 break;
1038 }
1039
1040 // Get the data from the transfer buffer
1041 usb_stor_access_xfer_buf(buffer, len, us->srb,
1042 &sg, &offset, FROM_XFER_BUF);
1043
1044 result = sddr09_write_lba(us, lba, page, pages,
1045 buffer, blockbuffer);
1046 if (result)
1047 break;
1048
1049 page = 0;
1050 lba++;
1051 sectors -= pages;
1052 }
1053
1054 kfree(buffer);
1055 kfree(blockbuffer);
1056
1057 return result;
1058}
1059
1060static int
1061sddr09_read_control(struct us_data *us,
1062 unsigned long address,
1063 unsigned int blocks,
1064 unsigned char *content,
1065 int use_sg) {
1066
1067 US_DEBUGP("Read control address %lu, blocks %d\n",
1068 address, blocks);
1069
1070 return sddr09_read21(us, address, blocks,
1071 CONTROL_SHIFT, content, use_sg);
1072}
1073
1074/*
1075 * Read Device ID Command: 12 bytes.
1076 * byte 0: opcode: ED
1077 *
1078 * Returns 2 bytes: Manufacturer ID and Device ID.
1079 * On more recent cards 3 bytes: the third byte is an option code A5
1080 * signifying that the secret command to read an 128-bit ID is available.
1081 * On still more recent cards 4 bytes: the fourth byte C0 means that
1082 * a second read ID cmd is available.
1083 */
1084static int
1085sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) {
1086 unsigned char *command = us->iobuf;
1087 unsigned char *content = us->iobuf;
1088 int result, i;
1089
1090 memset(command, 0, 12);
1091 command[0] = 0xED;
1092 command[1] = LUNBITS;
1093
1094 result = sddr09_send_scsi_command(us, command, 12);
1095 if (result)
1096 return result;
1097
1098 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
1099 content, 64, NULL);
1100
1101 for (i = 0; i < 4; i++)
1102 deviceID[i] = content[i];
1103
1104 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
1105}
1106
1107static int
1108sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) {
1109 int result;
1110 unsigned char status;
1111
1112 result = sddr09_read_status(us, &status);
1113 if (result) {
1114 US_DEBUGP("sddr09_get_wp: read_status fails\n");
1115 return result;
1116 }
1117 US_DEBUGP("sddr09_get_wp: status 0x%02X", status);
1118 if ((status & 0x80) == 0) {
1119 info->flags |= SDDR09_WP; /* write protected */
1120 US_DEBUGP(" WP");
1121 }
1122 if (status & 0x40)
1123 US_DEBUGP(" Ready");
1124 if (status & LUNBITS)
1125 US_DEBUGP(" Suspended");
1126 if (status & 0x1)
1127 US_DEBUGP(" Error");
1128 US_DEBUGP("\n");
1129 return 0;
1130}
1131
1132#if 0
1133/*
1134 * Reset Command: 12 bytes.
1135 * byte 0: opcode: EB
1136 */
1137static int
1138sddr09_reset(struct us_data *us) {
1139
1140 unsigned char *command = us->iobuf;
1141
1142 memset(command, 0, 12);
1143 command[0] = 0xEB;
1144 command[1] = LUNBITS;
1145
1146 return sddr09_send_scsi_command(us, command, 12);
1147}
1148#endif
1149
1150static struct nand_flash_dev *
1151sddr09_get_cardinfo(struct us_data *us, unsigned char flags) {
1152 struct nand_flash_dev *cardinfo;
1153 unsigned char deviceID[4];
1154 char blurbtxt[256];
1155 int result;
1156
1157 US_DEBUGP("Reading capacity...\n");
1158
1159 result = sddr09_read_deviceID(us, deviceID);
1160
1161 if (result) {
1162 US_DEBUGP("Result of read_deviceID is %d\n", result);
1163 printk(KERN_WARNING "sddr09: could not read card info\n");
1164 return NULL;
1165 }
1166
1167 sprintf(blurbtxt, "sddr09: Found Flash card, ID = %02X %02X %02X %02X",
1168 deviceID[0], deviceID[1], deviceID[2], deviceID[3]);
1169
1170 /* Byte 0 is the manufacturer */
1171 sprintf(blurbtxt + strlen(blurbtxt),
1172 ": Manuf. %s",
1173 nand_flash_manufacturer(deviceID[0]));
1174
1175 /* Byte 1 is the device type */
1176 cardinfo = nand_find_id(deviceID[1]);
1177 if (cardinfo) {
1178 /* MB or MiB? It is neither. A 16 MB card has
1179 17301504 raw bytes, of which 16384000 are
1180 usable for user data. */
1181 sprintf(blurbtxt + strlen(blurbtxt),
1182 ", %d MB", 1<<(cardinfo->chipshift - 20));
1183 } else {
1184 sprintf(blurbtxt + strlen(blurbtxt),
1185 ", type unrecognized");
1186 }
1187
1188 /* Byte 2 is code to signal availability of 128-bit ID */
1189 if (deviceID[2] == 0xa5) {
1190 sprintf(blurbtxt + strlen(blurbtxt),
1191 ", 128-bit ID");
1192 }
1193
1194 /* Byte 3 announces the availability of another read ID command */
1195 if (deviceID[3] == 0xc0) {
1196 sprintf(blurbtxt + strlen(blurbtxt),
1197 ", extra cmd");
1198 }
1199
1200 if (flags & SDDR09_WP)
1201 sprintf(blurbtxt + strlen(blurbtxt),
1202 ", WP");
1203
1204 printk(KERN_WARNING "%s\n", blurbtxt);
1205
1206 return cardinfo;
1207}
1208
1209static int
1210sddr09_read_map(struct us_data *us) {
1211
1212 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
1213 int numblocks, alloc_len, alloc_blocks;
1214 int i, j, result;
1215 unsigned char *buffer, *buffer_end, *ptr;
1216 unsigned int lba, lbact;
1217
1218 if (!info->capacity)
1219 return -1;
1220
1221 // size of a block is 1 << (blockshift + pageshift) bytes
1222 // divide into the total capacity to get the number of blocks
1223
1224 numblocks = info->capacity >> (info->blockshift + info->pageshift);
1225
1226 // read 64 bytes for every block (actually 1 << CONTROL_SHIFT)
1227 // but only use a 64 KB buffer
1228 // buffer size used must be a multiple of (1 << CONTROL_SHIFT)
1229#define SDDR09_READ_MAP_BUFSZ 65536
1230
1231 alloc_blocks = min(numblocks, SDDR09_READ_MAP_BUFSZ >> CONTROL_SHIFT);
1232 alloc_len = (alloc_blocks << CONTROL_SHIFT);
1233 buffer = kmalloc(alloc_len, GFP_NOIO);
1234 if (buffer == NULL) {
1235 printk(KERN_WARNING "sddr09_read_map: out of memory\n");
1236 result = -1;
1237 goto done;
1238 }
1239 buffer_end = buffer + alloc_len;
1240
1241#undef SDDR09_READ_MAP_BUFSZ
1242
1243 kfree(info->lba_to_pba);
1244 kfree(info->pba_to_lba);
1245 info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO);
1246 info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO);
1247
1248 if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) {
1249 printk(KERN_WARNING "sddr09_read_map: out of memory\n");
1250 result = -1;
1251 goto done;
1252 }
1253
1254 for (i = 0; i < numblocks; i++)
1255 info->lba_to_pba[i] = info->pba_to_lba[i] = UNDEF;
1256
1257 /*
1258 * Define lba-pba translation table
1259 */
1260
1261 ptr = buffer_end;
1262 for (i = 0; i < numblocks; i++) {
1263 ptr += (1 << CONTROL_SHIFT);
1264 if (ptr >= buffer_end) {
1265 unsigned long address;
1266
1267 address = i << (info->pageshift + info->blockshift);
1268 result = sddr09_read_control(
1269 us, address>>1,
1270 min(alloc_blocks, numblocks - i),
1271 buffer, 0);
1272 if (result) {
1273 result = -1;
1274 goto done;
1275 }
1276 ptr = buffer;
1277 }
1278
1279 if (i == 0 || i == 1) {
1280 info->pba_to_lba[i] = UNUSABLE;
1281 continue;
1282 }
1283
1284 /* special PBAs have control field 0^16 */
1285 for (j = 0; j < 16; j++)
1286 if (ptr[j] != 0)
1287 goto nonz;
1288 info->pba_to_lba[i] = UNUSABLE;
1289 printk(KERN_WARNING "sddr09: PBA %d has no logical mapping\n",
1290 i);
1291 continue;
1292
1293 nonz:
1294 /* unwritten PBAs have control field FF^16 */
1295 for (j = 0; j < 16; j++)
1296 if (ptr[j] != 0xff)
1297 goto nonff;
1298 continue;
1299
1300 nonff:
1301 /* normal PBAs start with six FFs */
1302 if (j < 6) {
1303 printk(KERN_WARNING
1304 "sddr09: PBA %d has no logical mapping: "
1305 "reserved area = %02X%02X%02X%02X "
1306 "data status %02X block status %02X\n",
1307 i, ptr[0], ptr[1], ptr[2], ptr[3],
1308 ptr[4], ptr[5]);
1309 info->pba_to_lba[i] = UNUSABLE;
1310 continue;
1311 }
1312
1313 if ((ptr[6] >> 4) != 0x01) {
1314 printk(KERN_WARNING
1315 "sddr09: PBA %d has invalid address field "
1316 "%02X%02X/%02X%02X\n",
1317 i, ptr[6], ptr[7], ptr[11], ptr[12]);
1318 info->pba_to_lba[i] = UNUSABLE;
1319 continue;
1320 }
1321
1322 /* check even parity */
1323 if (parity[ptr[6] ^ ptr[7]]) {
1324 printk(KERN_WARNING
1325 "sddr09: Bad parity in LBA for block %d"
1326 " (%02X %02X)\n", i, ptr[6], ptr[7]);
1327 info->pba_to_lba[i] = UNUSABLE;
1328 continue;
1329 }
1330
1331 lba = short_pack(ptr[7], ptr[6]);
1332 lba = (lba & 0x07FF) >> 1;
1333
1334 /*
1335 * Every 1024 physical blocks ("zone"), the LBA numbers
1336 * go back to zero, but are within a higher block of LBA's.
1337 * Also, there is a maximum of 1000 LBA's per zone.
1338 * In other words, in PBA 1024-2047 you will find LBA 0-999
1339 * which are really LBA 1000-1999. This allows for 24 bad
1340 * or special physical blocks per zone.
1341 */
1342
1343 if (lba >= 1000) {
1344 printk(KERN_WARNING
1345 "sddr09: Bad low LBA %d for block %d\n",
1346 lba, i);
1347 goto possibly_erase;
1348 }
1349
1350 lba += 1000*(i/0x400);
1351
1352 if (info->lba_to_pba[lba] != UNDEF) {
1353 printk(KERN_WARNING
1354 "sddr09: LBA %d seen for PBA %d and %d\n",
1355 lba, info->lba_to_pba[lba], i);
1356 goto possibly_erase;
1357 }
1358
1359 info->pba_to_lba[i] = lba;
1360 info->lba_to_pba[lba] = i;
1361 continue;
1362
1363 possibly_erase:
1364 if (erase_bad_lba_entries) {
1365 unsigned long address;
1366
1367 address = (i << (info->pageshift + info->blockshift));
1368 sddr09_erase(us, address>>1);
1369 info->pba_to_lba[i] = UNDEF;
1370 } else
1371 info->pba_to_lba[i] = UNUSABLE;
1372 }
1373
1374 /*
1375 * Approximate capacity. This is not entirely correct yet,
1376 * since a zone with less than 1000 usable pages leads to
1377 * missing LBAs. Especially if it is the last zone, some
1378 * LBAs can be past capacity.
1379 */
1380 lbact = 0;
1381 for (i = 0; i < numblocks; i += 1024) {
1382 int ct = 0;
1383
1384 for (j = 0; j < 1024 && i+j < numblocks; j++) {
1385 if (info->pba_to_lba[i+j] != UNUSABLE) {
1386 if (ct >= 1000)
1387 info->pba_to_lba[i+j] = SPARE;
1388 else
1389 ct++;
1390 }
1391 }
1392 lbact += ct;
1393 }
1394 info->lbact = lbact;
1395 US_DEBUGP("Found %d LBA's\n", lbact);
1396 result = 0;
1397
1398 done:
1399 if (result != 0) {
1400 kfree(info->lba_to_pba);
1401 kfree(info->pba_to_lba);
1402 info->lba_to_pba = NULL;
1403 info->pba_to_lba = NULL;
1404 }
1405 kfree(buffer);
1406 return result;
1407}
1408
1409static void
1410sddr09_card_info_destructor(void *extra) {
1411 struct sddr09_card_info *info = (struct sddr09_card_info *)extra;
1412
1413 if (!info)
1414 return;
1415
1416 kfree(info->lba_to_pba);
1417 kfree(info->pba_to_lba);
1418}
1419
1420static int
1421sddr09_common_init(struct us_data *us) {
1422 int result;
1423
1424 /* set the configuration -- STALL is an acceptable response here */
1425 if (us->pusb_dev->actconfig->desc.bConfigurationValue != 1) {
1426 US_DEBUGP("active config #%d != 1 ??\n", us->pusb_dev
1427 ->actconfig->desc.bConfigurationValue);
1428 return -EINVAL;
1429 }
1430
1431 result = usb_reset_configuration(us->pusb_dev);
1432 US_DEBUGP("Result of usb_reset_configuration is %d\n", result);
1433 if (result == -EPIPE) {
1434 US_DEBUGP("-- stall on control interface\n");
1435 } else if (result != 0) {
1436 /* it's not a stall, but another error -- time to bail */
1437 US_DEBUGP("-- Unknown error. Rejecting device\n");
1438 return -EINVAL;
1439 }
1440
1441 us->extra = kzalloc(sizeof(struct sddr09_card_info), GFP_NOIO);
1442 if (!us->extra)
1443 return -ENOMEM;
1444 us->extra_destructor = sddr09_card_info_destructor;
1445
1446 nand_init_ecc();
1447 return 0;
1448}
1449
1450
1451/*
1452 * This is needed at a very early stage. If this is not listed in the
1453 * unusual devices list but called from here then LUN 0 of the combo reader
1454 * is not recognized. But I do not know what precisely these calls do.
1455 */
1456static int
1457usb_stor_sddr09_dpcm_init(struct us_data *us) {
1458 int result;
1459 unsigned char *data = us->iobuf;
1460
1461 result = sddr09_common_init(us);
1462 if (result)
1463 return result;
1464
1465 result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2);
1466 if (result) {
1467 US_DEBUGP("sddr09_init: send_command fails\n");
1468 return result;
1469 }
1470
1471 US_DEBUGP("SDDR09init: %02X %02X\n", data[0], data[1]);
1472 // get 07 02
1473
1474 result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2);
1475 if (result) {
1476 US_DEBUGP("sddr09_init: 2nd send_command fails\n");
1477 return result;
1478 }
1479
1480 US_DEBUGP("SDDR09init: %02X %02X\n", data[0], data[1]);
1481 // get 07 00
1482
1483 result = sddr09_request_sense(us, data, 18);
1484 if (result == 0 && data[2] != 0) {
1485 int j;
1486 for (j=0; j<18; j++)
1487 printk(" %02X", data[j]);
1488 printk("\n");
1489 // get 70 00 00 00 00 00 00 * 00 00 00 00 00 00
1490 // 70: current command
1491 // sense key 0, sense code 0, extd sense code 0
1492 // additional transfer length * = sizeof(data) - 7
1493 // Or: 70 00 06 00 00 00 00 0b 00 00 00 00 28 00 00 00 00 00
1494 // sense key 06, sense code 28: unit attention,
1495 // not ready to ready transition
1496 }
1497
1498 // test unit ready
1499
1500 return 0; /* not result */
1501}
1502
1503/*
1504 * Transport for the Microtech DPCM-USB
1505 */
1506static int dpcm_transport(struct scsi_cmnd *srb, struct us_data *us)
1507{
1508 int ret;
1509
1510 US_DEBUGP("dpcm_transport: LUN=%d\n", srb->device->lun);
1511
1512 switch (srb->device->lun) {
1513 case 0:
1514
1515 /*
1516 * LUN 0 corresponds to the CompactFlash card reader.
1517 */
1518 ret = usb_stor_CB_transport(srb, us);
1519 break;
1520
1521 case 1:
1522
1523 /*
1524 * LUN 1 corresponds to the SmartMedia card reader.
1525 */
1526
1527 /*
1528 * Set the LUN to 0 (just in case).
1529 */
1530 srb->device->lun = 0;
1531 ret = sddr09_transport(srb, us);
1532 srb->device->lun = 1;
1533 break;
1534
1535 default:
1536 US_DEBUGP("dpcm_transport: Invalid LUN %d\n",
1537 srb->device->lun);
1538 ret = USB_STOR_TRANSPORT_ERROR;
1539 break;
1540 }
1541 return ret;
1542}
1543
1544
1545/*
1546 * Transport for the Sandisk SDDR-09
1547 */
1548static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us)
1549{
1550 static unsigned char sensekey = 0, sensecode = 0;
1551 static unsigned char havefakesense = 0;
1552 int result, i;
1553 unsigned char *ptr = us->iobuf;
1554 unsigned long capacity;
1555 unsigned int page, pages;
1556
1557 struct sddr09_card_info *info;
1558
1559 static unsigned char inquiry_response[8] = {
1560 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00
1561 };
1562
1563 /* note: no block descriptor support */
1564 static unsigned char mode_page_01[19] = {
1565 0x00, 0x0F, 0x00, 0x0, 0x0, 0x0, 0x00,
1566 0x01, 0x0A,
1567 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1568 };
1569
1570 info = (struct sddr09_card_info *)us->extra;
1571
1572 if (srb->cmnd[0] == REQUEST_SENSE && havefakesense) {
1573 /* for a faked command, we have to follow with a faked sense */
1574 memset(ptr, 0, 18);
1575 ptr[0] = 0x70;
1576 ptr[2] = sensekey;
1577 ptr[7] = 11;
1578 ptr[12] = sensecode;
1579 usb_stor_set_xfer_buf(ptr, 18, srb);
1580 sensekey = sensecode = havefakesense = 0;
1581 return USB_STOR_TRANSPORT_GOOD;
1582 }
1583
1584 havefakesense = 1;
1585
1586 /* Dummy up a response for INQUIRY since SDDR09 doesn't
1587 respond to INQUIRY commands */
1588
1589 if (srb->cmnd[0] == INQUIRY) {
1590 memcpy(ptr, inquiry_response, 8);
1591 fill_inquiry_response(us, ptr, 36);
1592 return USB_STOR_TRANSPORT_GOOD;
1593 }
1594
1595 if (srb->cmnd[0] == READ_CAPACITY) {
1596 struct nand_flash_dev *cardinfo;
1597
1598 sddr09_get_wp(us, info); /* read WP bit */
1599
1600 cardinfo = sddr09_get_cardinfo(us, info->flags);
1601 if (!cardinfo) {
1602 /* probably no media */
1603 init_error:
1604 sensekey = 0x02; /* not ready */
1605 sensecode = 0x3a; /* medium not present */
1606 return USB_STOR_TRANSPORT_FAILED;
1607 }
1608
1609 info->capacity = (1 << cardinfo->chipshift);
1610 info->pageshift = cardinfo->pageshift;
1611 info->pagesize = (1 << info->pageshift);
1612 info->blockshift = cardinfo->blockshift;
1613 info->blocksize = (1 << info->blockshift);
1614 info->blockmask = info->blocksize - 1;
1615
1616 // map initialization, must follow get_cardinfo()
1617 if (sddr09_read_map(us)) {
1618 /* probably out of memory */
1619 goto init_error;
1620 }
1621
1622 // Report capacity
1623
1624 capacity = (info->lbact << info->blockshift) - 1;
1625
1626 ((__be32 *) ptr)[0] = cpu_to_be32(capacity);
1627
1628 // Report page size
1629
1630 ((__be32 *) ptr)[1] = cpu_to_be32(info->pagesize);
1631 usb_stor_set_xfer_buf(ptr, 8, srb);
1632
1633 return USB_STOR_TRANSPORT_GOOD;
1634 }
1635
1636 if (srb->cmnd[0] == MODE_SENSE_10) {
1637 int modepage = (srb->cmnd[2] & 0x3F);
1638
1639 /* They ask for the Read/Write error recovery page,
1640 or for all pages. */
1641 /* %% We should check DBD %% */
1642 if (modepage == 0x01 || modepage == 0x3F) {
1643 US_DEBUGP("SDDR09: Dummy up request for "
1644 "mode page 0x%x\n", modepage);
1645
1646 memcpy(ptr, mode_page_01, sizeof(mode_page_01));
1647 ((__be16*)ptr)[0] = cpu_to_be16(sizeof(mode_page_01) - 2);
1648 ptr[3] = (info->flags & SDDR09_WP) ? 0x80 : 0;
1649 usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb);
1650 return USB_STOR_TRANSPORT_GOOD;
1651 }
1652
1653 sensekey = 0x05; /* illegal request */
1654 sensecode = 0x24; /* invalid field in CDB */
1655 return USB_STOR_TRANSPORT_FAILED;
1656 }
1657
1658 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)
1659 return USB_STOR_TRANSPORT_GOOD;
1660
1661 havefakesense = 0;
1662
1663 if (srb->cmnd[0] == READ_10) {
1664
1665 page = short_pack(srb->cmnd[3], srb->cmnd[2]);
1666 page <<= 16;
1667 page |= short_pack(srb->cmnd[5], srb->cmnd[4]);
1668 pages = short_pack(srb->cmnd[8], srb->cmnd[7]);
1669
1670 US_DEBUGP("READ_10: read page %d pagect %d\n",
1671 page, pages);
1672
1673 result = sddr09_read_data(us, page, pages);
1674 return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
1675 USB_STOR_TRANSPORT_ERROR);
1676 }
1677
1678 if (srb->cmnd[0] == WRITE_10) {
1679
1680 page = short_pack(srb->cmnd[3], srb->cmnd[2]);
1681 page <<= 16;
1682 page |= short_pack(srb->cmnd[5], srb->cmnd[4]);
1683 pages = short_pack(srb->cmnd[8], srb->cmnd[7]);
1684
1685 US_DEBUGP("WRITE_10: write page %d pagect %d\n",
1686 page, pages);
1687
1688 result = sddr09_write_data(us, page, pages);
1689 return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
1690 USB_STOR_TRANSPORT_ERROR);
1691 }
1692
1693 /* catch-all for all other commands, except
1694 * pass TEST_UNIT_READY and REQUEST_SENSE through
1695 */
1696 if (srb->cmnd[0] != TEST_UNIT_READY &&
1697 srb->cmnd[0] != REQUEST_SENSE) {
1698 sensekey = 0x05; /* illegal request */
1699 sensecode = 0x20; /* invalid command */
1700 havefakesense = 1;
1701 return USB_STOR_TRANSPORT_FAILED;
1702 }
1703
1704 for (; srb->cmd_len<12; srb->cmd_len++)
1705 srb->cmnd[srb->cmd_len] = 0;
1706
1707 srb->cmnd[1] = LUNBITS;
1708
1709 ptr[0] = 0;
1710 for (i=0; i<12; i++)
1711 sprintf(ptr+strlen(ptr), "%02X ", srb->cmnd[i]);
1712
1713 US_DEBUGP("SDDR09: Send control for command %s\n", ptr);
1714
1715 result = sddr09_send_scsi_command(us, srb->cmnd, 12);
1716 if (result) {
1717 US_DEBUGP("sddr09_transport: sddr09_send_scsi_command "
1718 "returns %d\n", result);
1719 return USB_STOR_TRANSPORT_ERROR;
1720 }
1721
1722 if (scsi_bufflen(srb) == 0)
1723 return USB_STOR_TRANSPORT_GOOD;
1724
1725 if (srb->sc_data_direction == DMA_TO_DEVICE ||
1726 srb->sc_data_direction == DMA_FROM_DEVICE) {
1727 unsigned int pipe = (srb->sc_data_direction == DMA_TO_DEVICE)
1728 ? us->send_bulk_pipe : us->recv_bulk_pipe;
1729
1730 US_DEBUGP("SDDR09: %s %d bytes\n",
1731 (srb->sc_data_direction == DMA_TO_DEVICE) ?
1732 "sending" : "receiving",
1733 scsi_bufflen(srb));
1734
1735 result = usb_stor_bulk_srb(us, pipe, srb);
1736
1737 return (result == USB_STOR_XFER_GOOD ?
1738 USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
1739 }
1740
1741 return USB_STOR_TRANSPORT_GOOD;
1742}
1743
1744/*
1745 * Initialization routine for the sddr09 subdriver
1746 */
1747static int
1748usb_stor_sddr09_init(struct us_data *us) {
1749 return sddr09_common_init(us);
1750}
1751
1752static int sddr09_probe(struct usb_interface *intf,
1753 const struct usb_device_id *id)
1754{
1755 struct us_data *us;
1756 int result;
1757
1758 result = usb_stor_probe1(&us, intf, id,
1759 (id - sddr09_usb_ids) + sddr09_unusual_dev_list);
1760 if (result)
1761 return result;
1762
1763 if (us->protocol == USB_PR_DPCM_USB) {
1764 us->transport_name = "Control/Bulk-EUSB/SDDR09";
1765 us->transport = dpcm_transport;
1766 us->transport_reset = usb_stor_CB_reset;
1767 us->max_lun = 1;
1768 } else {
1769 us->transport_name = "EUSB/SDDR09";
1770 us->transport = sddr09_transport;
1771 us->transport_reset = usb_stor_CB_reset;
1772 us->max_lun = 0;
1773 }
1774
1775 result = usb_stor_probe2(us);
1776 return result;
1777}
1778
1779static struct usb_driver sddr09_driver = {
1780 .name = "ums-sddr09",
1781 .probe = sddr09_probe,
1782 .disconnect = usb_stor_disconnect,
1783 .suspend = usb_stor_suspend,
1784 .resume = usb_stor_resume,
1785 .reset_resume = usb_stor_reset_resume,
1786 .pre_reset = usb_stor_pre_reset,
1787 .post_reset = usb_stor_post_reset,
1788 .id_table = sddr09_usb_ids,
1789 .soft_unbind = 1,
1790};
1791
1792static int __init sddr09_init(void)
1793{
1794 return usb_register(&sddr09_driver);
1795}
1796
1797static void __exit sddr09_exit(void)
1798{
1799 usb_deregister(&sddr09_driver);
1800}
1801
1802module_init(sddr09_init);
1803module_exit(sddr09_exit);
1/* Driver for SanDisk SDDR-09 SmartMedia reader
2 *
3 * (c) 2000, 2001 Robert Baruch (autophile@starband.net)
4 * (c) 2002 Andries Brouwer (aeb@cwi.nl)
5 * Developed with the assistance of:
6 * (c) 2002 Alan Stern <stern@rowland.org>
7 *
8 * The SanDisk SDDR-09 SmartMedia reader uses the Shuttle EUSB-01 chip.
9 * This chip is a programmable USB controller. In the SDDR-09, it has
10 * been programmed to obey a certain limited set of SCSI commands.
11 * This driver translates the "real" SCSI commands to the SDDR-09 SCSI
12 * commands.
13 *
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2, or (at your option) any
17 * later version.
18 *
19 * This program is distributed in the hope that it will be useful, but
20 * WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 * General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29/*
30 * Known vendor commands: 12 bytes, first byte is opcode
31 *
32 * E7: read scatter gather
33 * E8: read
34 * E9: write
35 * EA: erase
36 * EB: reset
37 * EC: read status
38 * ED: read ID
39 * EE: write CIS (?)
40 * EF: compute checksum (?)
41 */
42
43#include <linux/errno.h>
44#include <linux/module.h>
45#include <linux/slab.h>
46
47#include <scsi/scsi.h>
48#include <scsi/scsi_cmnd.h>
49#include <scsi/scsi_device.h>
50
51#include "usb.h"
52#include "transport.h"
53#include "protocol.h"
54#include "debug.h"
55
56MODULE_DESCRIPTION("Driver for SanDisk SDDR-09 SmartMedia reader");
57MODULE_AUTHOR("Andries Brouwer <aeb@cwi.nl>, Robert Baruch <autophile@starband.net>");
58MODULE_LICENSE("GPL");
59
60static int usb_stor_sddr09_dpcm_init(struct us_data *us);
61static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us);
62static int usb_stor_sddr09_init(struct us_data *us);
63
64
65/*
66 * The table of devices
67 */
68#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
69 vendorName, productName, useProtocol, useTransport, \
70 initFunction, flags) \
71{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
72 .driver_info = (flags) }
73
74static struct usb_device_id sddr09_usb_ids[] = {
75# include "unusual_sddr09.h"
76 { } /* Terminating entry */
77};
78MODULE_DEVICE_TABLE(usb, sddr09_usb_ids);
79
80#undef UNUSUAL_DEV
81
82/*
83 * The flags table
84 */
85#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
86 vendor_name, product_name, use_protocol, use_transport, \
87 init_function, Flags) \
88{ \
89 .vendorName = vendor_name, \
90 .productName = product_name, \
91 .useProtocol = use_protocol, \
92 .useTransport = use_transport, \
93 .initFunction = init_function, \
94}
95
96static struct us_unusual_dev sddr09_unusual_dev_list[] = {
97# include "unusual_sddr09.h"
98 { } /* Terminating entry */
99};
100
101#undef UNUSUAL_DEV
102
103
104#define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) )
105#define LSB_of(s) ((s)&0xFF)
106#define MSB_of(s) ((s)>>8)
107
108/*
109 * First some stuff that does not belong here:
110 * data on SmartMedia and other cards, completely
111 * unrelated to this driver.
112 * Similar stuff occurs in <linux/mtd/nand_ids.h>.
113 */
114
115struct nand_flash_dev {
116 int model_id;
117 int chipshift; /* 1<<cs bytes total capacity */
118 char pageshift; /* 1<<ps bytes in a page */
119 char blockshift; /* 1<<bs pages in an erase block */
120 char zoneshift; /* 1<<zs blocks in a zone */
121 /* # of logical blocks is 125/128 of this */
122 char pageadrlen; /* length of an address in bytes - 1 */
123};
124
125/*
126 * NAND Flash Manufacturer ID Codes
127 */
128#define NAND_MFR_AMD 0x01
129#define NAND_MFR_NATSEMI 0x8f
130#define NAND_MFR_TOSHIBA 0x98
131#define NAND_MFR_SAMSUNG 0xec
132
133static inline char *nand_flash_manufacturer(int manuf_id) {
134 switch(manuf_id) {
135 case NAND_MFR_AMD:
136 return "AMD";
137 case NAND_MFR_NATSEMI:
138 return "NATSEMI";
139 case NAND_MFR_TOSHIBA:
140 return "Toshiba";
141 case NAND_MFR_SAMSUNG:
142 return "Samsung";
143 default:
144 return "unknown";
145 }
146}
147
148/*
149 * It looks like it is unnecessary to attach manufacturer to the
150 * remaining data: SSFDC prescribes manufacturer-independent id codes.
151 *
152 * 256 MB NAND flash has a 5-byte ID with 2nd byte 0xaa, 0xba, 0xca or 0xda.
153 */
154
155static struct nand_flash_dev nand_flash_ids[] = {
156 /* NAND flash */
157 { 0x6e, 20, 8, 4, 8, 2}, /* 1 MB */
158 { 0xe8, 20, 8, 4, 8, 2}, /* 1 MB */
159 { 0xec, 20, 8, 4, 8, 2}, /* 1 MB */
160 { 0x64, 21, 8, 4, 9, 2}, /* 2 MB */
161 { 0xea, 21, 8, 4, 9, 2}, /* 2 MB */
162 { 0x6b, 22, 9, 4, 9, 2}, /* 4 MB */
163 { 0xe3, 22, 9, 4, 9, 2}, /* 4 MB */
164 { 0xe5, 22, 9, 4, 9, 2}, /* 4 MB */
165 { 0xe6, 23, 9, 4, 10, 2}, /* 8 MB */
166 { 0x73, 24, 9, 5, 10, 2}, /* 16 MB */
167 { 0x75, 25, 9, 5, 10, 2}, /* 32 MB */
168 { 0x76, 26, 9, 5, 10, 3}, /* 64 MB */
169 { 0x79, 27, 9, 5, 10, 3}, /* 128 MB */
170
171 /* MASK ROM */
172 { 0x5d, 21, 9, 4, 8, 2}, /* 2 MB */
173 { 0xd5, 22, 9, 4, 9, 2}, /* 4 MB */
174 { 0xd6, 23, 9, 4, 10, 2}, /* 8 MB */
175 { 0x57, 24, 9, 4, 11, 2}, /* 16 MB */
176 { 0x58, 25, 9, 4, 12, 2}, /* 32 MB */
177 { 0,}
178};
179
180static struct nand_flash_dev *
181nand_find_id(unsigned char id) {
182 int i;
183
184 for (i = 0; i < ARRAY_SIZE(nand_flash_ids); i++)
185 if (nand_flash_ids[i].model_id == id)
186 return &(nand_flash_ids[i]);
187 return NULL;
188}
189
190/*
191 * ECC computation.
192 */
193static unsigned char parity[256];
194static unsigned char ecc2[256];
195
196static void nand_init_ecc(void) {
197 int i, j, a;
198
199 parity[0] = 0;
200 for (i = 1; i < 256; i++)
201 parity[i] = (parity[i&(i-1)] ^ 1);
202
203 for (i = 0; i < 256; i++) {
204 a = 0;
205 for (j = 0; j < 8; j++) {
206 if (i & (1<<j)) {
207 if ((j & 1) == 0)
208 a ^= 0x04;
209 if ((j & 2) == 0)
210 a ^= 0x10;
211 if ((j & 4) == 0)
212 a ^= 0x40;
213 }
214 }
215 ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0));
216 }
217}
218
219/* compute 3-byte ecc on 256 bytes */
220static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) {
221 int i, j, a;
222 unsigned char par = 0, bit, bits[8] = {0};
223
224 /* collect 16 checksum bits */
225 for (i = 0; i < 256; i++) {
226 par ^= data[i];
227 bit = parity[data[i]];
228 for (j = 0; j < 8; j++)
229 if ((i & (1<<j)) == 0)
230 bits[j] ^= bit;
231 }
232
233 /* put 4+4+4 = 12 bits in the ecc */
234 a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0];
235 ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0));
236
237 a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4];
238 ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0));
239
240 ecc[2] = ecc2[par];
241}
242
243static int nand_compare_ecc(unsigned char *data, unsigned char *ecc) {
244 return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]);
245}
246
247static void nand_store_ecc(unsigned char *data, unsigned char *ecc) {
248 memcpy(data, ecc, 3);
249}
250
251/*
252 * The actual driver starts here.
253 */
254
255struct sddr09_card_info {
256 unsigned long capacity; /* Size of card in bytes */
257 int pagesize; /* Size of page in bytes */
258 int pageshift; /* log2 of pagesize */
259 int blocksize; /* Size of block in pages */
260 int blockshift; /* log2 of blocksize */
261 int blockmask; /* 2^blockshift - 1 */
262 int *lba_to_pba; /* logical to physical map */
263 int *pba_to_lba; /* physical to logical map */
264 int lbact; /* number of available pages */
265 int flags;
266#define SDDR09_WP 1 /* write protected */
267};
268
269/*
270 * On my 16MB card, control blocks have size 64 (16 real control bytes,
271 * and 48 junk bytes). In reality of course the card uses 16 control bytes,
272 * so the reader makes up the remaining 48. Don't know whether these numbers
273 * depend on the card. For now a constant.
274 */
275#define CONTROL_SHIFT 6
276
277/*
278 * On my Combo CF/SM reader, the SM reader has LUN 1.
279 * (and things fail with LUN 0).
280 * It seems LUN is irrelevant for others.
281 */
282#define LUN 1
283#define LUNBITS (LUN << 5)
284
285/*
286 * LBA and PBA are unsigned ints. Special values.
287 */
288#define UNDEF 0xffffffff
289#define SPARE 0xfffffffe
290#define UNUSABLE 0xfffffffd
291
292static const int erase_bad_lba_entries = 0;
293
294/* send vendor interface command (0x41) */
295/* called for requests 0, 1, 8 */
296static int
297sddr09_send_command(struct us_data *us,
298 unsigned char request,
299 unsigned char direction,
300 unsigned char *xfer_data,
301 unsigned int xfer_len) {
302 unsigned int pipe;
303 unsigned char requesttype = (0x41 | direction);
304 int rc;
305
306 // Get the receive or send control pipe number
307
308 if (direction == USB_DIR_IN)
309 pipe = us->recv_ctrl_pipe;
310 else
311 pipe = us->send_ctrl_pipe;
312
313 rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype,
314 0, 0, xfer_data, xfer_len);
315 switch (rc) {
316 case USB_STOR_XFER_GOOD: return 0;
317 case USB_STOR_XFER_STALLED: return -EPIPE;
318 default: return -EIO;
319 }
320}
321
322static int
323sddr09_send_scsi_command(struct us_data *us,
324 unsigned char *command,
325 unsigned int command_len) {
326 return sddr09_send_command(us, 0, USB_DIR_OUT, command, command_len);
327}
328
329#if 0
330/*
331 * Test Unit Ready Command: 12 bytes.
332 * byte 0: opcode: 00
333 */
334static int
335sddr09_test_unit_ready(struct us_data *us) {
336 unsigned char *command = us->iobuf;
337 int result;
338
339 memset(command, 0, 6);
340 command[1] = LUNBITS;
341
342 result = sddr09_send_scsi_command(us, command, 6);
343
344 usb_stor_dbg(us, "sddr09_test_unit_ready returns %d\n", result);
345
346 return result;
347}
348#endif
349
350/*
351 * Request Sense Command: 12 bytes.
352 * byte 0: opcode: 03
353 * byte 4: data length
354 */
355static int
356sddr09_request_sense(struct us_data *us, unsigned char *sensebuf, int buflen) {
357 unsigned char *command = us->iobuf;
358 int result;
359
360 memset(command, 0, 12);
361 command[0] = 0x03;
362 command[1] = LUNBITS;
363 command[4] = buflen;
364
365 result = sddr09_send_scsi_command(us, command, 12);
366 if (result)
367 return result;
368
369 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
370 sensebuf, buflen, NULL);
371 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
372}
373
374/*
375 * Read Command: 12 bytes.
376 * byte 0: opcode: E8
377 * byte 1: last two bits: 00: read data, 01: read blockwise control,
378 * 10: read both, 11: read pagewise control.
379 * It turns out we need values 20, 21, 22, 23 here (LUN 1).
380 * bytes 2-5: address (interpretation depends on byte 1, see below)
381 * bytes 10-11: count (idem)
382 *
383 * A page has 512 data bytes and 64 control bytes (16 control and 48 junk).
384 * A read data command gets data in 512-byte pages.
385 * A read control command gets control in 64-byte chunks.
386 * A read both command gets data+control in 576-byte chunks.
387 *
388 * Blocks are groups of 32 pages, and read blockwise control jumps to the
389 * next block, while read pagewise control jumps to the next page after
390 * reading a group of 64 control bytes.
391 * [Here 512 = 1<<pageshift, 32 = 1<<blockshift, 64 is constant?]
392 *
393 * (1 MB and 2 MB cards are a bit different, but I have only a 16 MB card.)
394 */
395
396static int
397sddr09_readX(struct us_data *us, int x, unsigned long fromaddress,
398 int nr_of_pages, int bulklen, unsigned char *buf,
399 int use_sg) {
400
401 unsigned char *command = us->iobuf;
402 int result;
403
404 command[0] = 0xE8;
405 command[1] = LUNBITS | x;
406 command[2] = MSB_of(fromaddress>>16);
407 command[3] = LSB_of(fromaddress>>16);
408 command[4] = MSB_of(fromaddress & 0xFFFF);
409 command[5] = LSB_of(fromaddress & 0xFFFF);
410 command[6] = 0;
411 command[7] = 0;
412 command[8] = 0;
413 command[9] = 0;
414 command[10] = MSB_of(nr_of_pages);
415 command[11] = LSB_of(nr_of_pages);
416
417 result = sddr09_send_scsi_command(us, command, 12);
418
419 if (result) {
420 usb_stor_dbg(us, "Result for send_control in sddr09_read2%d %d\n",
421 x, result);
422 return result;
423 }
424
425 result = usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe,
426 buf, bulklen, use_sg, NULL);
427
428 if (result != USB_STOR_XFER_GOOD) {
429 usb_stor_dbg(us, "Result for bulk_transfer in sddr09_read2%d %d\n",
430 x, result);
431 return -EIO;
432 }
433 return 0;
434}
435
436/*
437 * Read Data
438 *
439 * fromaddress counts data shorts:
440 * increasing it by 256 shifts the bytestream by 512 bytes;
441 * the last 8 bits are ignored.
442 *
443 * nr_of_pages counts pages of size (1 << pageshift).
444 */
445static int
446sddr09_read20(struct us_data *us, unsigned long fromaddress,
447 int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) {
448 int bulklen = nr_of_pages << pageshift;
449
450 /* The last 8 bits of fromaddress are ignored. */
451 return sddr09_readX(us, 0, fromaddress, nr_of_pages, bulklen,
452 buf, use_sg);
453}
454
455/*
456 * Read Blockwise Control
457 *
458 * fromaddress gives the starting position (as in read data;
459 * the last 8 bits are ignored); increasing it by 32*256 shifts
460 * the output stream by 64 bytes.
461 *
462 * count counts control groups of size (1 << controlshift).
463 * For me, controlshift = 6. Is this constant?
464 *
465 * After getting one control group, jump to the next block
466 * (fromaddress += 8192).
467 */
468static int
469sddr09_read21(struct us_data *us, unsigned long fromaddress,
470 int count, int controlshift, unsigned char *buf, int use_sg) {
471
472 int bulklen = (count << controlshift);
473 return sddr09_readX(us, 1, fromaddress, count, bulklen,
474 buf, use_sg);
475}
476
477/*
478 * Read both Data and Control
479 *
480 * fromaddress counts data shorts, ignoring control:
481 * increasing it by 256 shifts the bytestream by 576 = 512+64 bytes;
482 * the last 8 bits are ignored.
483 *
484 * nr_of_pages counts pages of size (1 << pageshift) + (1 << controlshift).
485 */
486static int
487sddr09_read22(struct us_data *us, unsigned long fromaddress,
488 int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) {
489
490 int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT);
491 usb_stor_dbg(us, "reading %d pages, %d bytes\n", nr_of_pages, bulklen);
492 return sddr09_readX(us, 2, fromaddress, nr_of_pages, bulklen,
493 buf, use_sg);
494}
495
496#if 0
497/*
498 * Read Pagewise Control
499 *
500 * fromaddress gives the starting position (as in read data;
501 * the last 8 bits are ignored); increasing it by 256 shifts
502 * the output stream by 64 bytes.
503 *
504 * count counts control groups of size (1 << controlshift).
505 * For me, controlshift = 6. Is this constant?
506 *
507 * After getting one control group, jump to the next page
508 * (fromaddress += 256).
509 */
510static int
511sddr09_read23(struct us_data *us, unsigned long fromaddress,
512 int count, int controlshift, unsigned char *buf, int use_sg) {
513
514 int bulklen = (count << controlshift);
515 return sddr09_readX(us, 3, fromaddress, count, bulklen,
516 buf, use_sg);
517}
518#endif
519
520/*
521 * Erase Command: 12 bytes.
522 * byte 0: opcode: EA
523 * bytes 6-9: erase address (big-endian, counting shorts, sector aligned).
524 *
525 * Always precisely one block is erased; bytes 2-5 and 10-11 are ignored.
526 * The byte address being erased is 2*Eaddress.
527 * The CIS cannot be erased.
528 */
529static int
530sddr09_erase(struct us_data *us, unsigned long Eaddress) {
531 unsigned char *command = us->iobuf;
532 int result;
533
534 usb_stor_dbg(us, "erase address %lu\n", Eaddress);
535
536 memset(command, 0, 12);
537 command[0] = 0xEA;
538 command[1] = LUNBITS;
539 command[6] = MSB_of(Eaddress>>16);
540 command[7] = LSB_of(Eaddress>>16);
541 command[8] = MSB_of(Eaddress & 0xFFFF);
542 command[9] = LSB_of(Eaddress & 0xFFFF);
543
544 result = sddr09_send_scsi_command(us, command, 12);
545
546 if (result)
547 usb_stor_dbg(us, "Result for send_control in sddr09_erase %d\n",
548 result);
549
550 return result;
551}
552
553/*
554 * Write CIS Command: 12 bytes.
555 * byte 0: opcode: EE
556 * bytes 2-5: write address in shorts
557 * bytes 10-11: sector count
558 *
559 * This writes at the indicated address. Don't know how it differs
560 * from E9. Maybe it does not erase? However, it will also write to
561 * the CIS.
562 *
563 * When two such commands on the same page follow each other directly,
564 * the second one is not done.
565 */
566
567/*
568 * Write Command: 12 bytes.
569 * byte 0: opcode: E9
570 * bytes 2-5: write address (big-endian, counting shorts, sector aligned).
571 * bytes 6-9: erase address (big-endian, counting shorts, sector aligned).
572 * bytes 10-11: sector count (big-endian, in 512-byte sectors).
573 *
574 * If write address equals erase address, the erase is done first,
575 * otherwise the write is done first. When erase address equals zero
576 * no erase is done?
577 */
578static int
579sddr09_writeX(struct us_data *us,
580 unsigned long Waddress, unsigned long Eaddress,
581 int nr_of_pages, int bulklen, unsigned char *buf, int use_sg) {
582
583 unsigned char *command = us->iobuf;
584 int result;
585
586 command[0] = 0xE9;
587 command[1] = LUNBITS;
588
589 command[2] = MSB_of(Waddress>>16);
590 command[3] = LSB_of(Waddress>>16);
591 command[4] = MSB_of(Waddress & 0xFFFF);
592 command[5] = LSB_of(Waddress & 0xFFFF);
593
594 command[6] = MSB_of(Eaddress>>16);
595 command[7] = LSB_of(Eaddress>>16);
596 command[8] = MSB_of(Eaddress & 0xFFFF);
597 command[9] = LSB_of(Eaddress & 0xFFFF);
598
599 command[10] = MSB_of(nr_of_pages);
600 command[11] = LSB_of(nr_of_pages);
601
602 result = sddr09_send_scsi_command(us, command, 12);
603
604 if (result) {
605 usb_stor_dbg(us, "Result for send_control in sddr09_writeX %d\n",
606 result);
607 return result;
608 }
609
610 result = usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe,
611 buf, bulklen, use_sg, NULL);
612
613 if (result != USB_STOR_XFER_GOOD) {
614 usb_stor_dbg(us, "Result for bulk_transfer in sddr09_writeX %d\n",
615 result);
616 return -EIO;
617 }
618 return 0;
619}
620
621/* erase address, write same address */
622static int
623sddr09_write_inplace(struct us_data *us, unsigned long address,
624 int nr_of_pages, int pageshift, unsigned char *buf,
625 int use_sg) {
626 int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT);
627 return sddr09_writeX(us, address, address, nr_of_pages, bulklen,
628 buf, use_sg);
629}
630
631#if 0
632/*
633 * Read Scatter Gather Command: 3+4n bytes.
634 * byte 0: opcode E7
635 * byte 2: n
636 * bytes 4i-1,4i,4i+1: page address
637 * byte 4i+2: page count
638 * (i=1..n)
639 *
640 * This reads several pages from the card to a single memory buffer.
641 * The last two bits of byte 1 have the same meaning as for E8.
642 */
643static int
644sddr09_read_sg_test_only(struct us_data *us) {
645 unsigned char *command = us->iobuf;
646 int result, bulklen, nsg, ct;
647 unsigned char *buf;
648 unsigned long address;
649
650 nsg = bulklen = 0;
651 command[0] = 0xE7;
652 command[1] = LUNBITS;
653 command[2] = 0;
654 address = 040000; ct = 1;
655 nsg++;
656 bulklen += (ct << 9);
657 command[4*nsg+2] = ct;
658 command[4*nsg+1] = ((address >> 9) & 0xFF);
659 command[4*nsg+0] = ((address >> 17) & 0xFF);
660 command[4*nsg-1] = ((address >> 25) & 0xFF);
661
662 address = 0340000; ct = 1;
663 nsg++;
664 bulklen += (ct << 9);
665 command[4*nsg+2] = ct;
666 command[4*nsg+1] = ((address >> 9) & 0xFF);
667 command[4*nsg+0] = ((address >> 17) & 0xFF);
668 command[4*nsg-1] = ((address >> 25) & 0xFF);
669
670 address = 01000000; ct = 2;
671 nsg++;
672 bulklen += (ct << 9);
673 command[4*nsg+2] = ct;
674 command[4*nsg+1] = ((address >> 9) & 0xFF);
675 command[4*nsg+0] = ((address >> 17) & 0xFF);
676 command[4*nsg-1] = ((address >> 25) & 0xFF);
677
678 command[2] = nsg;
679
680 result = sddr09_send_scsi_command(us, command, 4*nsg+3);
681
682 if (result) {
683 usb_stor_dbg(us, "Result for send_control in sddr09_read_sg %d\n",
684 result);
685 return result;
686 }
687
688 buf = kmalloc(bulklen, GFP_NOIO);
689 if (!buf)
690 return -ENOMEM;
691
692 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
693 buf, bulklen, NULL);
694 kfree(buf);
695 if (result != USB_STOR_XFER_GOOD) {
696 usb_stor_dbg(us, "Result for bulk_transfer in sddr09_read_sg %d\n",
697 result);
698 return -EIO;
699 }
700
701 return 0;
702}
703#endif
704
705/*
706 * Read Status Command: 12 bytes.
707 * byte 0: opcode: EC
708 *
709 * Returns 64 bytes, all zero except for the first.
710 * bit 0: 1: Error
711 * bit 5: 1: Suspended
712 * bit 6: 1: Ready
713 * bit 7: 1: Not write-protected
714 */
715
716static int
717sddr09_read_status(struct us_data *us, unsigned char *status) {
718
719 unsigned char *command = us->iobuf;
720 unsigned char *data = us->iobuf;
721 int result;
722
723 usb_stor_dbg(us, "Reading status...\n");
724
725 memset(command, 0, 12);
726 command[0] = 0xEC;
727 command[1] = LUNBITS;
728
729 result = sddr09_send_scsi_command(us, command, 12);
730 if (result)
731 return result;
732
733 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
734 data, 64, NULL);
735 *status = data[0];
736 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
737}
738
739static int
740sddr09_read_data(struct us_data *us,
741 unsigned long address,
742 unsigned int sectors) {
743
744 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
745 unsigned char *buffer;
746 unsigned int lba, maxlba, pba;
747 unsigned int page, pages;
748 unsigned int len, offset;
749 struct scatterlist *sg;
750 int result;
751
752 // Figure out the initial LBA and page
753 lba = address >> info->blockshift;
754 page = (address & info->blockmask);
755 maxlba = info->capacity >> (info->pageshift + info->blockshift);
756 if (lba >= maxlba)
757 return -EIO;
758
759 // Since we only read in one block at a time, we have to create
760 // a bounce buffer and move the data a piece at a time between the
761 // bounce buffer and the actual transfer buffer.
762
763 len = min(sectors, (unsigned int) info->blocksize) * info->pagesize;
764 buffer = kmalloc(len, GFP_NOIO);
765 if (buffer == NULL) {
766 printk(KERN_WARNING "sddr09_read_data: Out of memory\n");
767 return -ENOMEM;
768 }
769
770 // This could be made much more efficient by checking for
771 // contiguous LBA's. Another exercise left to the student.
772
773 result = 0;
774 offset = 0;
775 sg = NULL;
776
777 while (sectors > 0) {
778
779 /* Find number of pages we can read in this block */
780 pages = min(sectors, info->blocksize - page);
781 len = pages << info->pageshift;
782
783 /* Not overflowing capacity? */
784 if (lba >= maxlba) {
785 usb_stor_dbg(us, "Error: Requested lba %u exceeds maximum %u\n",
786 lba, maxlba);
787 result = -EIO;
788 break;
789 }
790
791 /* Find where this lba lives on disk */
792 pba = info->lba_to_pba[lba];
793
794 if (pba == UNDEF) { /* this lba was never written */
795
796 usb_stor_dbg(us, "Read %d zero pages (LBA %d) page %d\n",
797 pages, lba, page);
798
799 /* This is not really an error. It just means
800 that the block has never been written.
801 Instead of returning an error
802 it is better to return all zero data. */
803
804 memset(buffer, 0, len);
805
806 } else {
807 usb_stor_dbg(us, "Read %d pages, from PBA %d (LBA %d) page %d\n",
808 pages, pba, lba, page);
809
810 address = ((pba << info->blockshift) + page) <<
811 info->pageshift;
812
813 result = sddr09_read20(us, address>>1,
814 pages, info->pageshift, buffer, 0);
815 if (result)
816 break;
817 }
818
819 // Store the data in the transfer buffer
820 usb_stor_access_xfer_buf(buffer, len, us->srb,
821 &sg, &offset, TO_XFER_BUF);
822
823 page = 0;
824 lba++;
825 sectors -= pages;
826 }
827
828 kfree(buffer);
829 return result;
830}
831
832static unsigned int
833sddr09_find_unused_pba(struct sddr09_card_info *info, unsigned int lba) {
834 static unsigned int lastpba = 1;
835 int zonestart, end, i;
836
837 zonestart = (lba/1000) << 10;
838 end = info->capacity >> (info->blockshift + info->pageshift);
839 end -= zonestart;
840 if (end > 1024)
841 end = 1024;
842
843 for (i = lastpba+1; i < end; i++) {
844 if (info->pba_to_lba[zonestart+i] == UNDEF) {
845 lastpba = i;
846 return zonestart+i;
847 }
848 }
849 for (i = 0; i <= lastpba; i++) {
850 if (info->pba_to_lba[zonestart+i] == UNDEF) {
851 lastpba = i;
852 return zonestart+i;
853 }
854 }
855 return 0;
856}
857
858static int
859sddr09_write_lba(struct us_data *us, unsigned int lba,
860 unsigned int page, unsigned int pages,
861 unsigned char *ptr, unsigned char *blockbuffer) {
862
863 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
864 unsigned long address;
865 unsigned int pba, lbap;
866 unsigned int pagelen;
867 unsigned char *bptr, *cptr, *xptr;
868 unsigned char ecc[3];
869 int i, result, isnew;
870
871 lbap = ((lba % 1000) << 1) | 0x1000;
872 if (parity[MSB_of(lbap) ^ LSB_of(lbap)])
873 lbap ^= 1;
874 pba = info->lba_to_pba[lba];
875 isnew = 0;
876
877 if (pba == UNDEF) {
878 pba = sddr09_find_unused_pba(info, lba);
879 if (!pba) {
880 printk(KERN_WARNING
881 "sddr09_write_lba: Out of unused blocks\n");
882 return -ENOSPC;
883 }
884 info->pba_to_lba[pba] = lba;
885 info->lba_to_pba[lba] = pba;
886 isnew = 1;
887 }
888
889 if (pba == 1) {
890 /* Maybe it is impossible to write to PBA 1.
891 Fake success, but don't do anything. */
892 printk(KERN_WARNING "sddr09: avoid writing to pba 1\n");
893 return 0;
894 }
895
896 pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
897
898 /* read old contents */
899 address = (pba << (info->pageshift + info->blockshift));
900 result = sddr09_read22(us, address>>1, info->blocksize,
901 info->pageshift, blockbuffer, 0);
902 if (result)
903 return result;
904
905 /* check old contents and fill lba */
906 for (i = 0; i < info->blocksize; i++) {
907 bptr = blockbuffer + i*pagelen;
908 cptr = bptr + info->pagesize;
909 nand_compute_ecc(bptr, ecc);
910 if (!nand_compare_ecc(cptr+13, ecc)) {
911 usb_stor_dbg(us, "Warning: bad ecc in page %d- of pba %d\n",
912 i, pba);
913 nand_store_ecc(cptr+13, ecc);
914 }
915 nand_compute_ecc(bptr+(info->pagesize / 2), ecc);
916 if (!nand_compare_ecc(cptr+8, ecc)) {
917 usb_stor_dbg(us, "Warning: bad ecc in page %d+ of pba %d\n",
918 i, pba);
919 nand_store_ecc(cptr+8, ecc);
920 }
921 cptr[6] = cptr[11] = MSB_of(lbap);
922 cptr[7] = cptr[12] = LSB_of(lbap);
923 }
924
925 /* copy in new stuff and compute ECC */
926 xptr = ptr;
927 for (i = page; i < page+pages; i++) {
928 bptr = blockbuffer + i*pagelen;
929 cptr = bptr + info->pagesize;
930 memcpy(bptr, xptr, info->pagesize);
931 xptr += info->pagesize;
932 nand_compute_ecc(bptr, ecc);
933 nand_store_ecc(cptr+13, ecc);
934 nand_compute_ecc(bptr+(info->pagesize / 2), ecc);
935 nand_store_ecc(cptr+8, ecc);
936 }
937
938 usb_stor_dbg(us, "Rewrite PBA %d (LBA %d)\n", pba, lba);
939
940 result = sddr09_write_inplace(us, address>>1, info->blocksize,
941 info->pageshift, blockbuffer, 0);
942
943 usb_stor_dbg(us, "sddr09_write_inplace returns %d\n", result);
944
945#if 0
946 {
947 unsigned char status = 0;
948 int result2 = sddr09_read_status(us, &status);
949 if (result2)
950 usb_stor_dbg(us, "cannot read status\n");
951 else if (status != 0xc0)
952 usb_stor_dbg(us, "status after write: 0x%x\n", status);
953 }
954#endif
955
956#if 0
957 {
958 int result2 = sddr09_test_unit_ready(us);
959 }
960#endif
961
962 return result;
963}
964
965static int
966sddr09_write_data(struct us_data *us,
967 unsigned long address,
968 unsigned int sectors) {
969
970 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
971 unsigned int lba, maxlba, page, pages;
972 unsigned int pagelen, blocklen;
973 unsigned char *blockbuffer;
974 unsigned char *buffer;
975 unsigned int len, offset;
976 struct scatterlist *sg;
977 int result;
978
979 // Figure out the initial LBA and page
980 lba = address >> info->blockshift;
981 page = (address & info->blockmask);
982 maxlba = info->capacity >> (info->pageshift + info->blockshift);
983 if (lba >= maxlba)
984 return -EIO;
985
986 // blockbuffer is used for reading in the old data, overwriting
987 // with the new data, and performing ECC calculations
988
989 /* TODO: instead of doing kmalloc/kfree for each write,
990 add a bufferpointer to the info structure */
991
992 pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
993 blocklen = (pagelen << info->blockshift);
994 blockbuffer = kmalloc(blocklen, GFP_NOIO);
995 if (!blockbuffer) {
996 printk(KERN_WARNING "sddr09_write_data: Out of memory\n");
997 return -ENOMEM;
998 }
999
1000 // Since we don't write the user data directly to the device,
1001 // we have to create a bounce buffer and move the data a piece
1002 // at a time between the bounce buffer and the actual transfer buffer.
1003
1004 len = min(sectors, (unsigned int) info->blocksize) * info->pagesize;
1005 buffer = kmalloc(len, GFP_NOIO);
1006 if (buffer == NULL) {
1007 printk(KERN_WARNING "sddr09_write_data: Out of memory\n");
1008 kfree(blockbuffer);
1009 return -ENOMEM;
1010 }
1011
1012 result = 0;
1013 offset = 0;
1014 sg = NULL;
1015
1016 while (sectors > 0) {
1017
1018 // Write as many sectors as possible in this block
1019
1020 pages = min(sectors, info->blocksize - page);
1021 len = (pages << info->pageshift);
1022
1023 /* Not overflowing capacity? */
1024 if (lba >= maxlba) {
1025 usb_stor_dbg(us, "Error: Requested lba %u exceeds maximum %u\n",
1026 lba, maxlba);
1027 result = -EIO;
1028 break;
1029 }
1030
1031 // Get the data from the transfer buffer
1032 usb_stor_access_xfer_buf(buffer, len, us->srb,
1033 &sg, &offset, FROM_XFER_BUF);
1034
1035 result = sddr09_write_lba(us, lba, page, pages,
1036 buffer, blockbuffer);
1037 if (result)
1038 break;
1039
1040 page = 0;
1041 lba++;
1042 sectors -= pages;
1043 }
1044
1045 kfree(buffer);
1046 kfree(blockbuffer);
1047
1048 return result;
1049}
1050
1051static int
1052sddr09_read_control(struct us_data *us,
1053 unsigned long address,
1054 unsigned int blocks,
1055 unsigned char *content,
1056 int use_sg) {
1057
1058 usb_stor_dbg(us, "Read control address %lu, blocks %d\n",
1059 address, blocks);
1060
1061 return sddr09_read21(us, address, blocks,
1062 CONTROL_SHIFT, content, use_sg);
1063}
1064
1065/*
1066 * Read Device ID Command: 12 bytes.
1067 * byte 0: opcode: ED
1068 *
1069 * Returns 2 bytes: Manufacturer ID and Device ID.
1070 * On more recent cards 3 bytes: the third byte is an option code A5
1071 * signifying that the secret command to read an 128-bit ID is available.
1072 * On still more recent cards 4 bytes: the fourth byte C0 means that
1073 * a second read ID cmd is available.
1074 */
1075static int
1076sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) {
1077 unsigned char *command = us->iobuf;
1078 unsigned char *content = us->iobuf;
1079 int result, i;
1080
1081 memset(command, 0, 12);
1082 command[0] = 0xED;
1083 command[1] = LUNBITS;
1084
1085 result = sddr09_send_scsi_command(us, command, 12);
1086 if (result)
1087 return result;
1088
1089 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
1090 content, 64, NULL);
1091
1092 for (i = 0; i < 4; i++)
1093 deviceID[i] = content[i];
1094
1095 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
1096}
1097
1098static int
1099sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) {
1100 int result;
1101 unsigned char status;
1102
1103 result = sddr09_read_status(us, &status);
1104 if (result) {
1105 usb_stor_dbg(us, "read_status fails\n");
1106 return result;
1107 }
1108 usb_stor_dbg(us, "status 0x%02X", status);
1109 if ((status & 0x80) == 0) {
1110 info->flags |= SDDR09_WP; /* write protected */
1111 US_DEBUGPX(" WP");
1112 }
1113 if (status & 0x40)
1114 US_DEBUGPX(" Ready");
1115 if (status & LUNBITS)
1116 US_DEBUGPX(" Suspended");
1117 if (status & 0x1)
1118 US_DEBUGPX(" Error");
1119 US_DEBUGPX("\n");
1120 return 0;
1121}
1122
1123#if 0
1124/*
1125 * Reset Command: 12 bytes.
1126 * byte 0: opcode: EB
1127 */
1128static int
1129sddr09_reset(struct us_data *us) {
1130
1131 unsigned char *command = us->iobuf;
1132
1133 memset(command, 0, 12);
1134 command[0] = 0xEB;
1135 command[1] = LUNBITS;
1136
1137 return sddr09_send_scsi_command(us, command, 12);
1138}
1139#endif
1140
1141static struct nand_flash_dev *
1142sddr09_get_cardinfo(struct us_data *us, unsigned char flags) {
1143 struct nand_flash_dev *cardinfo;
1144 unsigned char deviceID[4];
1145 char blurbtxt[256];
1146 int result;
1147
1148 usb_stor_dbg(us, "Reading capacity...\n");
1149
1150 result = sddr09_read_deviceID(us, deviceID);
1151
1152 if (result) {
1153 usb_stor_dbg(us, "Result of read_deviceID is %d\n", result);
1154 printk(KERN_WARNING "sddr09: could not read card info\n");
1155 return NULL;
1156 }
1157
1158 sprintf(blurbtxt, "sddr09: Found Flash card, ID = %02X %02X %02X %02X",
1159 deviceID[0], deviceID[1], deviceID[2], deviceID[3]);
1160
1161 /* Byte 0 is the manufacturer */
1162 sprintf(blurbtxt + strlen(blurbtxt),
1163 ": Manuf. %s",
1164 nand_flash_manufacturer(deviceID[0]));
1165
1166 /* Byte 1 is the device type */
1167 cardinfo = nand_find_id(deviceID[1]);
1168 if (cardinfo) {
1169 /* MB or MiB? It is neither. A 16 MB card has
1170 17301504 raw bytes, of which 16384000 are
1171 usable for user data. */
1172 sprintf(blurbtxt + strlen(blurbtxt),
1173 ", %d MB", 1<<(cardinfo->chipshift - 20));
1174 } else {
1175 sprintf(blurbtxt + strlen(blurbtxt),
1176 ", type unrecognized");
1177 }
1178
1179 /* Byte 2 is code to signal availability of 128-bit ID */
1180 if (deviceID[2] == 0xa5) {
1181 sprintf(blurbtxt + strlen(blurbtxt),
1182 ", 128-bit ID");
1183 }
1184
1185 /* Byte 3 announces the availability of another read ID command */
1186 if (deviceID[3] == 0xc0) {
1187 sprintf(blurbtxt + strlen(blurbtxt),
1188 ", extra cmd");
1189 }
1190
1191 if (flags & SDDR09_WP)
1192 sprintf(blurbtxt + strlen(blurbtxt),
1193 ", WP");
1194
1195 printk(KERN_WARNING "%s\n", blurbtxt);
1196
1197 return cardinfo;
1198}
1199
1200static int
1201sddr09_read_map(struct us_data *us) {
1202
1203 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
1204 int numblocks, alloc_len, alloc_blocks;
1205 int i, j, result;
1206 unsigned char *buffer, *buffer_end, *ptr;
1207 unsigned int lba, lbact;
1208
1209 if (!info->capacity)
1210 return -1;
1211
1212 // size of a block is 1 << (blockshift + pageshift) bytes
1213 // divide into the total capacity to get the number of blocks
1214
1215 numblocks = info->capacity >> (info->blockshift + info->pageshift);
1216
1217 // read 64 bytes for every block (actually 1 << CONTROL_SHIFT)
1218 // but only use a 64 KB buffer
1219 // buffer size used must be a multiple of (1 << CONTROL_SHIFT)
1220#define SDDR09_READ_MAP_BUFSZ 65536
1221
1222 alloc_blocks = min(numblocks, SDDR09_READ_MAP_BUFSZ >> CONTROL_SHIFT);
1223 alloc_len = (alloc_blocks << CONTROL_SHIFT);
1224 buffer = kmalloc(alloc_len, GFP_NOIO);
1225 if (buffer == NULL) {
1226 printk(KERN_WARNING "sddr09_read_map: out of memory\n");
1227 result = -1;
1228 goto done;
1229 }
1230 buffer_end = buffer + alloc_len;
1231
1232#undef SDDR09_READ_MAP_BUFSZ
1233
1234 kfree(info->lba_to_pba);
1235 kfree(info->pba_to_lba);
1236 info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO);
1237 info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO);
1238
1239 if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) {
1240 printk(KERN_WARNING "sddr09_read_map: out of memory\n");
1241 result = -1;
1242 goto done;
1243 }
1244
1245 for (i = 0; i < numblocks; i++)
1246 info->lba_to_pba[i] = info->pba_to_lba[i] = UNDEF;
1247
1248 /*
1249 * Define lba-pba translation table
1250 */
1251
1252 ptr = buffer_end;
1253 for (i = 0; i < numblocks; i++) {
1254 ptr += (1 << CONTROL_SHIFT);
1255 if (ptr >= buffer_end) {
1256 unsigned long address;
1257
1258 address = i << (info->pageshift + info->blockshift);
1259 result = sddr09_read_control(
1260 us, address>>1,
1261 min(alloc_blocks, numblocks - i),
1262 buffer, 0);
1263 if (result) {
1264 result = -1;
1265 goto done;
1266 }
1267 ptr = buffer;
1268 }
1269
1270 if (i == 0 || i == 1) {
1271 info->pba_to_lba[i] = UNUSABLE;
1272 continue;
1273 }
1274
1275 /* special PBAs have control field 0^16 */
1276 for (j = 0; j < 16; j++)
1277 if (ptr[j] != 0)
1278 goto nonz;
1279 info->pba_to_lba[i] = UNUSABLE;
1280 printk(KERN_WARNING "sddr09: PBA %d has no logical mapping\n",
1281 i);
1282 continue;
1283
1284 nonz:
1285 /* unwritten PBAs have control field FF^16 */
1286 for (j = 0; j < 16; j++)
1287 if (ptr[j] != 0xff)
1288 goto nonff;
1289 continue;
1290
1291 nonff:
1292 /* normal PBAs start with six FFs */
1293 if (j < 6) {
1294 printk(KERN_WARNING
1295 "sddr09: PBA %d has no logical mapping: "
1296 "reserved area = %02X%02X%02X%02X "
1297 "data status %02X block status %02X\n",
1298 i, ptr[0], ptr[1], ptr[2], ptr[3],
1299 ptr[4], ptr[5]);
1300 info->pba_to_lba[i] = UNUSABLE;
1301 continue;
1302 }
1303
1304 if ((ptr[6] >> 4) != 0x01) {
1305 printk(KERN_WARNING
1306 "sddr09: PBA %d has invalid address field "
1307 "%02X%02X/%02X%02X\n",
1308 i, ptr[6], ptr[7], ptr[11], ptr[12]);
1309 info->pba_to_lba[i] = UNUSABLE;
1310 continue;
1311 }
1312
1313 /* check even parity */
1314 if (parity[ptr[6] ^ ptr[7]]) {
1315 printk(KERN_WARNING
1316 "sddr09: Bad parity in LBA for block %d"
1317 " (%02X %02X)\n", i, ptr[6], ptr[7]);
1318 info->pba_to_lba[i] = UNUSABLE;
1319 continue;
1320 }
1321
1322 lba = short_pack(ptr[7], ptr[6]);
1323 lba = (lba & 0x07FF) >> 1;
1324
1325 /*
1326 * Every 1024 physical blocks ("zone"), the LBA numbers
1327 * go back to zero, but are within a higher block of LBA's.
1328 * Also, there is a maximum of 1000 LBA's per zone.
1329 * In other words, in PBA 1024-2047 you will find LBA 0-999
1330 * which are really LBA 1000-1999. This allows for 24 bad
1331 * or special physical blocks per zone.
1332 */
1333
1334 if (lba >= 1000) {
1335 printk(KERN_WARNING
1336 "sddr09: Bad low LBA %d for block %d\n",
1337 lba, i);
1338 goto possibly_erase;
1339 }
1340
1341 lba += 1000*(i/0x400);
1342
1343 if (info->lba_to_pba[lba] != UNDEF) {
1344 printk(KERN_WARNING
1345 "sddr09: LBA %d seen for PBA %d and %d\n",
1346 lba, info->lba_to_pba[lba], i);
1347 goto possibly_erase;
1348 }
1349
1350 info->pba_to_lba[i] = lba;
1351 info->lba_to_pba[lba] = i;
1352 continue;
1353
1354 possibly_erase:
1355 if (erase_bad_lba_entries) {
1356 unsigned long address;
1357
1358 address = (i << (info->pageshift + info->blockshift));
1359 sddr09_erase(us, address>>1);
1360 info->pba_to_lba[i] = UNDEF;
1361 } else
1362 info->pba_to_lba[i] = UNUSABLE;
1363 }
1364
1365 /*
1366 * Approximate capacity. This is not entirely correct yet,
1367 * since a zone with less than 1000 usable pages leads to
1368 * missing LBAs. Especially if it is the last zone, some
1369 * LBAs can be past capacity.
1370 */
1371 lbact = 0;
1372 for (i = 0; i < numblocks; i += 1024) {
1373 int ct = 0;
1374
1375 for (j = 0; j < 1024 && i+j < numblocks; j++) {
1376 if (info->pba_to_lba[i+j] != UNUSABLE) {
1377 if (ct >= 1000)
1378 info->pba_to_lba[i+j] = SPARE;
1379 else
1380 ct++;
1381 }
1382 }
1383 lbact += ct;
1384 }
1385 info->lbact = lbact;
1386 usb_stor_dbg(us, "Found %d LBA's\n", lbact);
1387 result = 0;
1388
1389 done:
1390 if (result != 0) {
1391 kfree(info->lba_to_pba);
1392 kfree(info->pba_to_lba);
1393 info->lba_to_pba = NULL;
1394 info->pba_to_lba = NULL;
1395 }
1396 kfree(buffer);
1397 return result;
1398}
1399
1400static void
1401sddr09_card_info_destructor(void *extra) {
1402 struct sddr09_card_info *info = (struct sddr09_card_info *)extra;
1403
1404 if (!info)
1405 return;
1406
1407 kfree(info->lba_to_pba);
1408 kfree(info->pba_to_lba);
1409}
1410
1411static int
1412sddr09_common_init(struct us_data *us) {
1413 int result;
1414
1415 /* set the configuration -- STALL is an acceptable response here */
1416 if (us->pusb_dev->actconfig->desc.bConfigurationValue != 1) {
1417 usb_stor_dbg(us, "active config #%d != 1 ??\n",
1418 us->pusb_dev->actconfig->desc.bConfigurationValue);
1419 return -EINVAL;
1420 }
1421
1422 result = usb_reset_configuration(us->pusb_dev);
1423 usb_stor_dbg(us, "Result of usb_reset_configuration is %d\n", result);
1424 if (result == -EPIPE) {
1425 usb_stor_dbg(us, "-- stall on control interface\n");
1426 } else if (result != 0) {
1427 /* it's not a stall, but another error -- time to bail */
1428 usb_stor_dbg(us, "-- Unknown error. Rejecting device\n");
1429 return -EINVAL;
1430 }
1431
1432 us->extra = kzalloc(sizeof(struct sddr09_card_info), GFP_NOIO);
1433 if (!us->extra)
1434 return -ENOMEM;
1435 us->extra_destructor = sddr09_card_info_destructor;
1436
1437 nand_init_ecc();
1438 return 0;
1439}
1440
1441
1442/*
1443 * This is needed at a very early stage. If this is not listed in the
1444 * unusual devices list but called from here then LUN 0 of the combo reader
1445 * is not recognized. But I do not know what precisely these calls do.
1446 */
1447static int
1448usb_stor_sddr09_dpcm_init(struct us_data *us) {
1449 int result;
1450 unsigned char *data = us->iobuf;
1451
1452 result = sddr09_common_init(us);
1453 if (result)
1454 return result;
1455
1456 result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2);
1457 if (result) {
1458 usb_stor_dbg(us, "send_command fails\n");
1459 return result;
1460 }
1461
1462 usb_stor_dbg(us, "%02X %02X\n", data[0], data[1]);
1463 // get 07 02
1464
1465 result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2);
1466 if (result) {
1467 usb_stor_dbg(us, "2nd send_command fails\n");
1468 return result;
1469 }
1470
1471 usb_stor_dbg(us, "%02X %02X\n", data[0], data[1]);
1472 // get 07 00
1473
1474 result = sddr09_request_sense(us, data, 18);
1475 if (result == 0 && data[2] != 0) {
1476 int j;
1477 for (j=0; j<18; j++)
1478 printk(" %02X", data[j]);
1479 printk("\n");
1480 // get 70 00 00 00 00 00 00 * 00 00 00 00 00 00
1481 // 70: current command
1482 // sense key 0, sense code 0, extd sense code 0
1483 // additional transfer length * = sizeof(data) - 7
1484 // Or: 70 00 06 00 00 00 00 0b 00 00 00 00 28 00 00 00 00 00
1485 // sense key 06, sense code 28: unit attention,
1486 // not ready to ready transition
1487 }
1488
1489 // test unit ready
1490
1491 return 0; /* not result */
1492}
1493
1494/*
1495 * Transport for the Microtech DPCM-USB
1496 */
1497static int dpcm_transport(struct scsi_cmnd *srb, struct us_data *us)
1498{
1499 int ret;
1500
1501 usb_stor_dbg(us, "LUN=%d\n", srb->device->lun);
1502
1503 switch (srb->device->lun) {
1504 case 0:
1505
1506 /*
1507 * LUN 0 corresponds to the CompactFlash card reader.
1508 */
1509 ret = usb_stor_CB_transport(srb, us);
1510 break;
1511
1512 case 1:
1513
1514 /*
1515 * LUN 1 corresponds to the SmartMedia card reader.
1516 */
1517
1518 /*
1519 * Set the LUN to 0 (just in case).
1520 */
1521 srb->device->lun = 0;
1522 ret = sddr09_transport(srb, us);
1523 srb->device->lun = 1;
1524 break;
1525
1526 default:
1527 usb_stor_dbg(us, "Invalid LUN %d\n", srb->device->lun);
1528 ret = USB_STOR_TRANSPORT_ERROR;
1529 break;
1530 }
1531 return ret;
1532}
1533
1534
1535/*
1536 * Transport for the Sandisk SDDR-09
1537 */
1538static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us)
1539{
1540 static unsigned char sensekey = 0, sensecode = 0;
1541 static unsigned char havefakesense = 0;
1542 int result, i;
1543 unsigned char *ptr = us->iobuf;
1544 unsigned long capacity;
1545 unsigned int page, pages;
1546
1547 struct sddr09_card_info *info;
1548
1549 static unsigned char inquiry_response[8] = {
1550 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00
1551 };
1552
1553 /* note: no block descriptor support */
1554 static unsigned char mode_page_01[19] = {
1555 0x00, 0x0F, 0x00, 0x0, 0x0, 0x0, 0x00,
1556 0x01, 0x0A,
1557 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1558 };
1559
1560 info = (struct sddr09_card_info *)us->extra;
1561
1562 if (srb->cmnd[0] == REQUEST_SENSE && havefakesense) {
1563 /* for a faked command, we have to follow with a faked sense */
1564 memset(ptr, 0, 18);
1565 ptr[0] = 0x70;
1566 ptr[2] = sensekey;
1567 ptr[7] = 11;
1568 ptr[12] = sensecode;
1569 usb_stor_set_xfer_buf(ptr, 18, srb);
1570 sensekey = sensecode = havefakesense = 0;
1571 return USB_STOR_TRANSPORT_GOOD;
1572 }
1573
1574 havefakesense = 1;
1575
1576 /* Dummy up a response for INQUIRY since SDDR09 doesn't
1577 respond to INQUIRY commands */
1578
1579 if (srb->cmnd[0] == INQUIRY) {
1580 memcpy(ptr, inquiry_response, 8);
1581 fill_inquiry_response(us, ptr, 36);
1582 return USB_STOR_TRANSPORT_GOOD;
1583 }
1584
1585 if (srb->cmnd[0] == READ_CAPACITY) {
1586 struct nand_flash_dev *cardinfo;
1587
1588 sddr09_get_wp(us, info); /* read WP bit */
1589
1590 cardinfo = sddr09_get_cardinfo(us, info->flags);
1591 if (!cardinfo) {
1592 /* probably no media */
1593 init_error:
1594 sensekey = 0x02; /* not ready */
1595 sensecode = 0x3a; /* medium not present */
1596 return USB_STOR_TRANSPORT_FAILED;
1597 }
1598
1599 info->capacity = (1 << cardinfo->chipshift);
1600 info->pageshift = cardinfo->pageshift;
1601 info->pagesize = (1 << info->pageshift);
1602 info->blockshift = cardinfo->blockshift;
1603 info->blocksize = (1 << info->blockshift);
1604 info->blockmask = info->blocksize - 1;
1605
1606 // map initialization, must follow get_cardinfo()
1607 if (sddr09_read_map(us)) {
1608 /* probably out of memory */
1609 goto init_error;
1610 }
1611
1612 // Report capacity
1613
1614 capacity = (info->lbact << info->blockshift) - 1;
1615
1616 ((__be32 *) ptr)[0] = cpu_to_be32(capacity);
1617
1618 // Report page size
1619
1620 ((__be32 *) ptr)[1] = cpu_to_be32(info->pagesize);
1621 usb_stor_set_xfer_buf(ptr, 8, srb);
1622
1623 return USB_STOR_TRANSPORT_GOOD;
1624 }
1625
1626 if (srb->cmnd[0] == MODE_SENSE_10) {
1627 int modepage = (srb->cmnd[2] & 0x3F);
1628
1629 /* They ask for the Read/Write error recovery page,
1630 or for all pages. */
1631 /* %% We should check DBD %% */
1632 if (modepage == 0x01 || modepage == 0x3F) {
1633 usb_stor_dbg(us, "Dummy up request for mode page 0x%x\n",
1634 modepage);
1635
1636 memcpy(ptr, mode_page_01, sizeof(mode_page_01));
1637 ((__be16*)ptr)[0] = cpu_to_be16(sizeof(mode_page_01) - 2);
1638 ptr[3] = (info->flags & SDDR09_WP) ? 0x80 : 0;
1639 usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb);
1640 return USB_STOR_TRANSPORT_GOOD;
1641 }
1642
1643 sensekey = 0x05; /* illegal request */
1644 sensecode = 0x24; /* invalid field in CDB */
1645 return USB_STOR_TRANSPORT_FAILED;
1646 }
1647
1648 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)
1649 return USB_STOR_TRANSPORT_GOOD;
1650
1651 havefakesense = 0;
1652
1653 if (srb->cmnd[0] == READ_10) {
1654
1655 page = short_pack(srb->cmnd[3], srb->cmnd[2]);
1656 page <<= 16;
1657 page |= short_pack(srb->cmnd[5], srb->cmnd[4]);
1658 pages = short_pack(srb->cmnd[8], srb->cmnd[7]);
1659
1660 usb_stor_dbg(us, "READ_10: read page %d pagect %d\n",
1661 page, pages);
1662
1663 result = sddr09_read_data(us, page, pages);
1664 return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
1665 USB_STOR_TRANSPORT_ERROR);
1666 }
1667
1668 if (srb->cmnd[0] == WRITE_10) {
1669
1670 page = short_pack(srb->cmnd[3], srb->cmnd[2]);
1671 page <<= 16;
1672 page |= short_pack(srb->cmnd[5], srb->cmnd[4]);
1673 pages = short_pack(srb->cmnd[8], srb->cmnd[7]);
1674
1675 usb_stor_dbg(us, "WRITE_10: write page %d pagect %d\n",
1676 page, pages);
1677
1678 result = sddr09_write_data(us, page, pages);
1679 return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
1680 USB_STOR_TRANSPORT_ERROR);
1681 }
1682
1683 /* catch-all for all other commands, except
1684 * pass TEST_UNIT_READY and REQUEST_SENSE through
1685 */
1686 if (srb->cmnd[0] != TEST_UNIT_READY &&
1687 srb->cmnd[0] != REQUEST_SENSE) {
1688 sensekey = 0x05; /* illegal request */
1689 sensecode = 0x20; /* invalid command */
1690 havefakesense = 1;
1691 return USB_STOR_TRANSPORT_FAILED;
1692 }
1693
1694 for (; srb->cmd_len<12; srb->cmd_len++)
1695 srb->cmnd[srb->cmd_len] = 0;
1696
1697 srb->cmnd[1] = LUNBITS;
1698
1699 ptr[0] = 0;
1700 for (i=0; i<12; i++)
1701 sprintf(ptr+strlen(ptr), "%02X ", srb->cmnd[i]);
1702
1703 usb_stor_dbg(us, "Send control for command %s\n", ptr);
1704
1705 result = sddr09_send_scsi_command(us, srb->cmnd, 12);
1706 if (result) {
1707 usb_stor_dbg(us, "sddr09_send_scsi_command returns %d\n",
1708 result);
1709 return USB_STOR_TRANSPORT_ERROR;
1710 }
1711
1712 if (scsi_bufflen(srb) == 0)
1713 return USB_STOR_TRANSPORT_GOOD;
1714
1715 if (srb->sc_data_direction == DMA_TO_DEVICE ||
1716 srb->sc_data_direction == DMA_FROM_DEVICE) {
1717 unsigned int pipe = (srb->sc_data_direction == DMA_TO_DEVICE)
1718 ? us->send_bulk_pipe : us->recv_bulk_pipe;
1719
1720 usb_stor_dbg(us, "%s %d bytes\n",
1721 (srb->sc_data_direction == DMA_TO_DEVICE) ?
1722 "sending" : "receiving",
1723 scsi_bufflen(srb));
1724
1725 result = usb_stor_bulk_srb(us, pipe, srb);
1726
1727 return (result == USB_STOR_XFER_GOOD ?
1728 USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
1729 }
1730
1731 return USB_STOR_TRANSPORT_GOOD;
1732}
1733
1734/*
1735 * Initialization routine for the sddr09 subdriver
1736 */
1737static int
1738usb_stor_sddr09_init(struct us_data *us) {
1739 return sddr09_common_init(us);
1740}
1741
1742static int sddr09_probe(struct usb_interface *intf,
1743 const struct usb_device_id *id)
1744{
1745 struct us_data *us;
1746 int result;
1747
1748 result = usb_stor_probe1(&us, intf, id,
1749 (id - sddr09_usb_ids) + sddr09_unusual_dev_list);
1750 if (result)
1751 return result;
1752
1753 if (us->protocol == USB_PR_DPCM_USB) {
1754 us->transport_name = "Control/Bulk-EUSB/SDDR09";
1755 us->transport = dpcm_transport;
1756 us->transport_reset = usb_stor_CB_reset;
1757 us->max_lun = 1;
1758 } else {
1759 us->transport_name = "EUSB/SDDR09";
1760 us->transport = sddr09_transport;
1761 us->transport_reset = usb_stor_CB_reset;
1762 us->max_lun = 0;
1763 }
1764
1765 result = usb_stor_probe2(us);
1766 return result;
1767}
1768
1769static struct usb_driver sddr09_driver = {
1770 .name = "ums-sddr09",
1771 .probe = sddr09_probe,
1772 .disconnect = usb_stor_disconnect,
1773 .suspend = usb_stor_suspend,
1774 .resume = usb_stor_resume,
1775 .reset_resume = usb_stor_reset_resume,
1776 .pre_reset = usb_stor_pre_reset,
1777 .post_reset = usb_stor_post_reset,
1778 .id_table = sddr09_usb_ids,
1779 .soft_unbind = 1,
1780 .no_dynamic_id = 1,
1781};
1782
1783module_usb_driver(sddr09_driver);