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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Driver for SanDisk SDDR-09 SmartMedia reader
4 *
5 * (c) 2000, 2001 Robert Baruch (autophile@starband.net)
6 * (c) 2002 Andries Brouwer (aeb@cwi.nl)
7 * Developed with the assistance of:
8 * (c) 2002 Alan Stern <stern@rowland.org>
9 *
10 * The SanDisk SDDR-09 SmartMedia reader uses the Shuttle EUSB-01 chip.
11 * This chip is a programmable USB controller. In the SDDR-09, it has
12 * been programmed to obey a certain limited set of SCSI commands.
13 * This driver translates the "real" SCSI commands to the SDDR-09 SCSI
14 * commands.
15 */
16
17/*
18 * Known vendor commands: 12 bytes, first byte is opcode
19 *
20 * E7: read scatter gather
21 * E8: read
22 * E9: write
23 * EA: erase
24 * EB: reset
25 * EC: read status
26 * ED: read ID
27 * EE: write CIS (?)
28 * EF: compute checksum (?)
29 */
30
31#include <linux/errno.h>
32#include <linux/module.h>
33#include <linux/slab.h>
34
35#include <scsi/scsi.h>
36#include <scsi/scsi_cmnd.h>
37#include <scsi/scsi_device.h>
38
39#include "usb.h"
40#include "transport.h"
41#include "protocol.h"
42#include "debug.h"
43#include "scsiglue.h"
44
45#define DRV_NAME "ums-sddr09"
46
47MODULE_DESCRIPTION("Driver for SanDisk SDDR-09 SmartMedia reader");
48MODULE_AUTHOR("Andries Brouwer <aeb@cwi.nl>, Robert Baruch <autophile@starband.net>");
49MODULE_LICENSE("GPL");
50MODULE_IMPORT_NS("USB_STORAGE");
51
52static int usb_stor_sddr09_dpcm_init(struct us_data *us);
53static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us);
54static int usb_stor_sddr09_init(struct us_data *us);
55
56
57/*
58 * The table of devices
59 */
60#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
61 vendorName, productName, useProtocol, useTransport, \
62 initFunction, flags) \
63{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
64 .driver_info = (flags) }
65
66static const struct usb_device_id sddr09_usb_ids[] = {
67# include "unusual_sddr09.h"
68 { } /* Terminating entry */
69};
70MODULE_DEVICE_TABLE(usb, sddr09_usb_ids);
71
72#undef UNUSUAL_DEV
73
74/*
75 * The flags table
76 */
77#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
78 vendor_name, product_name, use_protocol, use_transport, \
79 init_function, Flags) \
80{ \
81 .vendorName = vendor_name, \
82 .productName = product_name, \
83 .useProtocol = use_protocol, \
84 .useTransport = use_transport, \
85 .initFunction = init_function, \
86}
87
88static const struct us_unusual_dev sddr09_unusual_dev_list[] = {
89# include "unusual_sddr09.h"
90 { } /* Terminating entry */
91};
92
93#undef UNUSUAL_DEV
94
95
96#define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) )
97#define LSB_of(s) ((s)&0xFF)
98#define MSB_of(s) ((s)>>8)
99
100/*
101 * First some stuff that does not belong here:
102 * data on SmartMedia and other cards, completely
103 * unrelated to this driver.
104 * Similar stuff occurs in <linux/mtd/nand_ids.h>.
105 */
106
107struct nand_flash_dev {
108 int model_id;
109 int chipshift; /* 1<<cs bytes total capacity */
110 char pageshift; /* 1<<ps bytes in a page */
111 char blockshift; /* 1<<bs pages in an erase block */
112 char zoneshift; /* 1<<zs blocks in a zone */
113 /* # of logical blocks is 125/128 of this */
114 char pageadrlen; /* length of an address in bytes - 1 */
115};
116
117/*
118 * NAND Flash Manufacturer ID Codes
119 */
120#define NAND_MFR_AMD 0x01
121#define NAND_MFR_NATSEMI 0x8f
122#define NAND_MFR_TOSHIBA 0x98
123#define NAND_MFR_SAMSUNG 0xec
124
125static inline char *nand_flash_manufacturer(int manuf_id) {
126 switch(manuf_id) {
127 case NAND_MFR_AMD:
128 return "AMD";
129 case NAND_MFR_NATSEMI:
130 return "NATSEMI";
131 case NAND_MFR_TOSHIBA:
132 return "Toshiba";
133 case NAND_MFR_SAMSUNG:
134 return "Samsung";
135 default:
136 return "unknown";
137 }
138}
139
140/*
141 * It looks like it is unnecessary to attach manufacturer to the
142 * remaining data: SSFDC prescribes manufacturer-independent id codes.
143 *
144 * 256 MB NAND flash has a 5-byte ID with 2nd byte 0xaa, 0xba, 0xca or 0xda.
145 */
146
147static struct nand_flash_dev nand_flash_ids[] = {
148 /* NAND flash */
149 { 0x6e, 20, 8, 4, 8, 2}, /* 1 MB */
150 { 0xe8, 20, 8, 4, 8, 2}, /* 1 MB */
151 { 0xec, 20, 8, 4, 8, 2}, /* 1 MB */
152 { 0x64, 21, 8, 4, 9, 2}, /* 2 MB */
153 { 0xea, 21, 8, 4, 9, 2}, /* 2 MB */
154 { 0x6b, 22, 9, 4, 9, 2}, /* 4 MB */
155 { 0xe3, 22, 9, 4, 9, 2}, /* 4 MB */
156 { 0xe5, 22, 9, 4, 9, 2}, /* 4 MB */
157 { 0xe6, 23, 9, 4, 10, 2}, /* 8 MB */
158 { 0x73, 24, 9, 5, 10, 2}, /* 16 MB */
159 { 0x75, 25, 9, 5, 10, 2}, /* 32 MB */
160 { 0x76, 26, 9, 5, 10, 3}, /* 64 MB */
161 { 0x79, 27, 9, 5, 10, 3}, /* 128 MB */
162
163 /* MASK ROM */
164 { 0x5d, 21, 9, 4, 8, 2}, /* 2 MB */
165 { 0xd5, 22, 9, 4, 9, 2}, /* 4 MB */
166 { 0xd6, 23, 9, 4, 10, 2}, /* 8 MB */
167 { 0x57, 24, 9, 4, 11, 2}, /* 16 MB */
168 { 0x58, 25, 9, 4, 12, 2}, /* 32 MB */
169 { 0,}
170};
171
172static struct nand_flash_dev *
173nand_find_id(unsigned char id) {
174 int i;
175
176 for (i = 0; i < ARRAY_SIZE(nand_flash_ids); i++)
177 if (nand_flash_ids[i].model_id == id)
178 return &(nand_flash_ids[i]);
179 return NULL;
180}
181
182/*
183 * ECC computation.
184 */
185static unsigned char parity[256];
186static unsigned char ecc2[256];
187
188static void nand_init_ecc(void) {
189 int i, j, a;
190
191 parity[0] = 0;
192 for (i = 1; i < 256; i++)
193 parity[i] = (parity[i&(i-1)] ^ 1);
194
195 for (i = 0; i < 256; i++) {
196 a = 0;
197 for (j = 0; j < 8; j++) {
198 if (i & (1<<j)) {
199 if ((j & 1) == 0)
200 a ^= 0x04;
201 if ((j & 2) == 0)
202 a ^= 0x10;
203 if ((j & 4) == 0)
204 a ^= 0x40;
205 }
206 }
207 ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0));
208 }
209}
210
211/* compute 3-byte ecc on 256 bytes */
212static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) {
213 int i, j, a;
214 unsigned char par = 0, bit, bits[8] = {0};
215
216 /* collect 16 checksum bits */
217 for (i = 0; i < 256; i++) {
218 par ^= data[i];
219 bit = parity[data[i]];
220 for (j = 0; j < 8; j++)
221 if ((i & (1<<j)) == 0)
222 bits[j] ^= bit;
223 }
224
225 /* put 4+4+4 = 12 bits in the ecc */
226 a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0];
227 ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0));
228
229 a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4];
230 ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0));
231
232 ecc[2] = ecc2[par];
233}
234
235static int nand_compare_ecc(unsigned char *data, unsigned char *ecc) {
236 return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]);
237}
238
239static void nand_store_ecc(unsigned char *data, unsigned char *ecc) {
240 memcpy(data, ecc, 3);
241}
242
243/*
244 * The actual driver starts here.
245 */
246
247struct sddr09_card_info {
248 unsigned long capacity; /* Size of card in bytes */
249 int pagesize; /* Size of page in bytes */
250 int pageshift; /* log2 of pagesize */
251 int blocksize; /* Size of block in pages */
252 int blockshift; /* log2 of blocksize */
253 int blockmask; /* 2^blockshift - 1 */
254 int *lba_to_pba; /* logical to physical map */
255 int *pba_to_lba; /* physical to logical map */
256 int lbact; /* number of available pages */
257 int flags;
258#define SDDR09_WP 1 /* write protected */
259};
260
261/*
262 * On my 16MB card, control blocks have size 64 (16 real control bytes,
263 * and 48 junk bytes). In reality of course the card uses 16 control bytes,
264 * so the reader makes up the remaining 48. Don't know whether these numbers
265 * depend on the card. For now a constant.
266 */
267#define CONTROL_SHIFT 6
268
269/*
270 * On my Combo CF/SM reader, the SM reader has LUN 1.
271 * (and things fail with LUN 0).
272 * It seems LUN is irrelevant for others.
273 */
274#define LUN 1
275#define LUNBITS (LUN << 5)
276
277/*
278 * LBA and PBA are unsigned ints. Special values.
279 */
280#define UNDEF 0xffffffff
281#define SPARE 0xfffffffe
282#define UNUSABLE 0xfffffffd
283
284static const int erase_bad_lba_entries = 0;
285
286/* send vendor interface command (0x41) */
287/* called for requests 0, 1, 8 */
288static int
289sddr09_send_command(struct us_data *us,
290 unsigned char request,
291 unsigned char direction,
292 unsigned char *xfer_data,
293 unsigned int xfer_len) {
294 unsigned int pipe;
295 unsigned char requesttype = (0x41 | direction);
296 int rc;
297
298 // Get the receive or send control pipe number
299
300 if (direction == USB_DIR_IN)
301 pipe = us->recv_ctrl_pipe;
302 else
303 pipe = us->send_ctrl_pipe;
304
305 rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype,
306 0, 0, xfer_data, xfer_len);
307 switch (rc) {
308 case USB_STOR_XFER_GOOD: return 0;
309 case USB_STOR_XFER_STALLED: return -EPIPE;
310 default: return -EIO;
311 }
312}
313
314static int
315sddr09_send_scsi_command(struct us_data *us,
316 unsigned char *command,
317 unsigned int command_len) {
318 return sddr09_send_command(us, 0, USB_DIR_OUT, command, command_len);
319}
320
321#if 0
322/*
323 * Test Unit Ready Command: 12 bytes.
324 * byte 0: opcode: 00
325 */
326static int
327sddr09_test_unit_ready(struct us_data *us) {
328 unsigned char *command = us->iobuf;
329 int result;
330
331 memset(command, 0, 6);
332 command[1] = LUNBITS;
333
334 result = sddr09_send_scsi_command(us, command, 6);
335
336 usb_stor_dbg(us, "sddr09_test_unit_ready returns %d\n", result);
337
338 return result;
339}
340#endif
341
342/*
343 * Request Sense Command: 12 bytes.
344 * byte 0: opcode: 03
345 * byte 4: data length
346 */
347static int
348sddr09_request_sense(struct us_data *us, unsigned char *sensebuf, int buflen) {
349 unsigned char *command = us->iobuf;
350 int result;
351
352 memset(command, 0, 12);
353 command[0] = 0x03;
354 command[1] = LUNBITS;
355 command[4] = buflen;
356
357 result = sddr09_send_scsi_command(us, command, 12);
358 if (result)
359 return result;
360
361 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
362 sensebuf, buflen, NULL);
363 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
364}
365
366/*
367 * Read Command: 12 bytes.
368 * byte 0: opcode: E8
369 * byte 1: last two bits: 00: read data, 01: read blockwise control,
370 * 10: read both, 11: read pagewise control.
371 * It turns out we need values 20, 21, 22, 23 here (LUN 1).
372 * bytes 2-5: address (interpretation depends on byte 1, see below)
373 * bytes 10-11: count (idem)
374 *
375 * A page has 512 data bytes and 64 control bytes (16 control and 48 junk).
376 * A read data command gets data in 512-byte pages.
377 * A read control command gets control in 64-byte chunks.
378 * A read both command gets data+control in 576-byte chunks.
379 *
380 * Blocks are groups of 32 pages, and read blockwise control jumps to the
381 * next block, while read pagewise control jumps to the next page after
382 * reading a group of 64 control bytes.
383 * [Here 512 = 1<<pageshift, 32 = 1<<blockshift, 64 is constant?]
384 *
385 * (1 MB and 2 MB cards are a bit different, but I have only a 16 MB card.)
386 */
387
388static int
389sddr09_readX(struct us_data *us, int x, unsigned long fromaddress,
390 int nr_of_pages, int bulklen, unsigned char *buf,
391 int use_sg) {
392
393 unsigned char *command = us->iobuf;
394 int result;
395
396 command[0] = 0xE8;
397 command[1] = LUNBITS | x;
398 command[2] = MSB_of(fromaddress>>16);
399 command[3] = LSB_of(fromaddress>>16);
400 command[4] = MSB_of(fromaddress & 0xFFFF);
401 command[5] = LSB_of(fromaddress & 0xFFFF);
402 command[6] = 0;
403 command[7] = 0;
404 command[8] = 0;
405 command[9] = 0;
406 command[10] = MSB_of(nr_of_pages);
407 command[11] = LSB_of(nr_of_pages);
408
409 result = sddr09_send_scsi_command(us, command, 12);
410
411 if (result) {
412 usb_stor_dbg(us, "Result for send_control in sddr09_read2%d %d\n",
413 x, result);
414 return result;
415 }
416
417 result = usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe,
418 buf, bulklen, use_sg, NULL);
419
420 if (result != USB_STOR_XFER_GOOD) {
421 usb_stor_dbg(us, "Result for bulk_transfer in sddr09_read2%d %d\n",
422 x, result);
423 return -EIO;
424 }
425 return 0;
426}
427
428/*
429 * Read Data
430 *
431 * fromaddress counts data shorts:
432 * increasing it by 256 shifts the bytestream by 512 bytes;
433 * the last 8 bits are ignored.
434 *
435 * nr_of_pages counts pages of size (1 << pageshift).
436 */
437static int
438sddr09_read20(struct us_data *us, unsigned long fromaddress,
439 int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) {
440 int bulklen = nr_of_pages << pageshift;
441
442 /* The last 8 bits of fromaddress are ignored. */
443 return sddr09_readX(us, 0, fromaddress, nr_of_pages, bulklen,
444 buf, use_sg);
445}
446
447/*
448 * Read Blockwise Control
449 *
450 * fromaddress gives the starting position (as in read data;
451 * the last 8 bits are ignored); increasing it by 32*256 shifts
452 * the output stream by 64 bytes.
453 *
454 * count counts control groups of size (1 << controlshift).
455 * For me, controlshift = 6. Is this constant?
456 *
457 * After getting one control group, jump to the next block
458 * (fromaddress += 8192).
459 */
460static int
461sddr09_read21(struct us_data *us, unsigned long fromaddress,
462 int count, int controlshift, unsigned char *buf, int use_sg) {
463
464 int bulklen = (count << controlshift);
465 return sddr09_readX(us, 1, fromaddress, count, bulklen,
466 buf, use_sg);
467}
468
469/*
470 * Read both Data and Control
471 *
472 * fromaddress counts data shorts, ignoring control:
473 * increasing it by 256 shifts the bytestream by 576 = 512+64 bytes;
474 * the last 8 bits are ignored.
475 *
476 * nr_of_pages counts pages of size (1 << pageshift) + (1 << controlshift).
477 */
478static int
479sddr09_read22(struct us_data *us, unsigned long fromaddress,
480 int nr_of_pages, int pageshift, unsigned char *buf, int use_sg) {
481
482 int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT);
483 usb_stor_dbg(us, "reading %d pages, %d bytes\n", nr_of_pages, bulklen);
484 return sddr09_readX(us, 2, fromaddress, nr_of_pages, bulklen,
485 buf, use_sg);
486}
487
488#if 0
489/*
490 * Read Pagewise Control
491 *
492 * fromaddress gives the starting position (as in read data;
493 * the last 8 bits are ignored); increasing it by 256 shifts
494 * the output stream by 64 bytes.
495 *
496 * count counts control groups of size (1 << controlshift).
497 * For me, controlshift = 6. Is this constant?
498 *
499 * After getting one control group, jump to the next page
500 * (fromaddress += 256).
501 */
502static int
503sddr09_read23(struct us_data *us, unsigned long fromaddress,
504 int count, int controlshift, unsigned char *buf, int use_sg) {
505
506 int bulklen = (count << controlshift);
507 return sddr09_readX(us, 3, fromaddress, count, bulklen,
508 buf, use_sg);
509}
510#endif
511
512/*
513 * Erase Command: 12 bytes.
514 * byte 0: opcode: EA
515 * bytes 6-9: erase address (big-endian, counting shorts, sector aligned).
516 *
517 * Always precisely one block is erased; bytes 2-5 and 10-11 are ignored.
518 * The byte address being erased is 2*Eaddress.
519 * The CIS cannot be erased.
520 */
521static int
522sddr09_erase(struct us_data *us, unsigned long Eaddress) {
523 unsigned char *command = us->iobuf;
524 int result;
525
526 usb_stor_dbg(us, "erase address %lu\n", Eaddress);
527
528 memset(command, 0, 12);
529 command[0] = 0xEA;
530 command[1] = LUNBITS;
531 command[6] = MSB_of(Eaddress>>16);
532 command[7] = LSB_of(Eaddress>>16);
533 command[8] = MSB_of(Eaddress & 0xFFFF);
534 command[9] = LSB_of(Eaddress & 0xFFFF);
535
536 result = sddr09_send_scsi_command(us, command, 12);
537
538 if (result)
539 usb_stor_dbg(us, "Result for send_control in sddr09_erase %d\n",
540 result);
541
542 return result;
543}
544
545/*
546 * Write CIS Command: 12 bytes.
547 * byte 0: opcode: EE
548 * bytes 2-5: write address in shorts
549 * bytes 10-11: sector count
550 *
551 * This writes at the indicated address. Don't know how it differs
552 * from E9. Maybe it does not erase? However, it will also write to
553 * the CIS.
554 *
555 * When two such commands on the same page follow each other directly,
556 * the second one is not done.
557 */
558
559/*
560 * Write Command: 12 bytes.
561 * byte 0: opcode: E9
562 * bytes 2-5: write address (big-endian, counting shorts, sector aligned).
563 * bytes 6-9: erase address (big-endian, counting shorts, sector aligned).
564 * bytes 10-11: sector count (big-endian, in 512-byte sectors).
565 *
566 * If write address equals erase address, the erase is done first,
567 * otherwise the write is done first. When erase address equals zero
568 * no erase is done?
569 */
570static int
571sddr09_writeX(struct us_data *us,
572 unsigned long Waddress, unsigned long Eaddress,
573 int nr_of_pages, int bulklen, unsigned char *buf, int use_sg) {
574
575 unsigned char *command = us->iobuf;
576 int result;
577
578 command[0] = 0xE9;
579 command[1] = LUNBITS;
580
581 command[2] = MSB_of(Waddress>>16);
582 command[3] = LSB_of(Waddress>>16);
583 command[4] = MSB_of(Waddress & 0xFFFF);
584 command[5] = LSB_of(Waddress & 0xFFFF);
585
586 command[6] = MSB_of(Eaddress>>16);
587 command[7] = LSB_of(Eaddress>>16);
588 command[8] = MSB_of(Eaddress & 0xFFFF);
589 command[9] = LSB_of(Eaddress & 0xFFFF);
590
591 command[10] = MSB_of(nr_of_pages);
592 command[11] = LSB_of(nr_of_pages);
593
594 result = sddr09_send_scsi_command(us, command, 12);
595
596 if (result) {
597 usb_stor_dbg(us, "Result for send_control in sddr09_writeX %d\n",
598 result);
599 return result;
600 }
601
602 result = usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe,
603 buf, bulklen, use_sg, NULL);
604
605 if (result != USB_STOR_XFER_GOOD) {
606 usb_stor_dbg(us, "Result for bulk_transfer in sddr09_writeX %d\n",
607 result);
608 return -EIO;
609 }
610 return 0;
611}
612
613/* erase address, write same address */
614static int
615sddr09_write_inplace(struct us_data *us, unsigned long address,
616 int nr_of_pages, int pageshift, unsigned char *buf,
617 int use_sg) {
618 int bulklen = (nr_of_pages << pageshift) + (nr_of_pages << CONTROL_SHIFT);
619 return sddr09_writeX(us, address, address, nr_of_pages, bulklen,
620 buf, use_sg);
621}
622
623#if 0
624/*
625 * Read Scatter Gather Command: 3+4n bytes.
626 * byte 0: opcode E7
627 * byte 2: n
628 * bytes 4i-1,4i,4i+1: page address
629 * byte 4i+2: page count
630 * (i=1..n)
631 *
632 * This reads several pages from the card to a single memory buffer.
633 * The last two bits of byte 1 have the same meaning as for E8.
634 */
635static int
636sddr09_read_sg_test_only(struct us_data *us) {
637 unsigned char *command = us->iobuf;
638 int result, bulklen, nsg, ct;
639 unsigned char *buf;
640 unsigned long address;
641
642 nsg = bulklen = 0;
643 command[0] = 0xE7;
644 command[1] = LUNBITS;
645 command[2] = 0;
646 address = 040000; ct = 1;
647 nsg++;
648 bulklen += (ct << 9);
649 command[4*nsg+2] = ct;
650 command[4*nsg+1] = ((address >> 9) & 0xFF);
651 command[4*nsg+0] = ((address >> 17) & 0xFF);
652 command[4*nsg-1] = ((address >> 25) & 0xFF);
653
654 address = 0340000; 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 = 01000000; ct = 2;
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 command[2] = nsg;
671
672 result = sddr09_send_scsi_command(us, command, 4*nsg+3);
673
674 if (result) {
675 usb_stor_dbg(us, "Result for send_control in sddr09_read_sg %d\n",
676 result);
677 return result;
678 }
679
680 buf = kmalloc(bulklen, GFP_NOIO);
681 if (!buf)
682 return -ENOMEM;
683
684 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
685 buf, bulklen, NULL);
686 kfree(buf);
687 if (result != USB_STOR_XFER_GOOD) {
688 usb_stor_dbg(us, "Result for bulk_transfer in sddr09_read_sg %d\n",
689 result);
690 return -EIO;
691 }
692
693 return 0;
694}
695#endif
696
697/*
698 * Read Status Command: 12 bytes.
699 * byte 0: opcode: EC
700 *
701 * Returns 64 bytes, all zero except for the first.
702 * bit 0: 1: Error
703 * bit 5: 1: Suspended
704 * bit 6: 1: Ready
705 * bit 7: 1: Not write-protected
706 */
707
708static int
709sddr09_read_status(struct us_data *us, unsigned char *status) {
710
711 unsigned char *command = us->iobuf;
712 unsigned char *data = us->iobuf;
713 int result;
714
715 usb_stor_dbg(us, "Reading status...\n");
716
717 memset(command, 0, 12);
718 command[0] = 0xEC;
719 command[1] = LUNBITS;
720
721 result = sddr09_send_scsi_command(us, command, 12);
722 if (result)
723 return result;
724
725 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
726 data, 64, NULL);
727 *status = data[0];
728 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
729}
730
731static int
732sddr09_read_data(struct us_data *us,
733 unsigned long address,
734 unsigned int sectors) {
735
736 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
737 unsigned char *buffer;
738 unsigned int lba, maxlba, pba;
739 unsigned int page, pages;
740 unsigned int len, offset;
741 struct scatterlist *sg;
742 int result;
743
744 // Figure out the initial LBA and page
745 lba = address >> info->blockshift;
746 page = (address & info->blockmask);
747 maxlba = info->capacity >> (info->pageshift + info->blockshift);
748 if (lba >= maxlba)
749 return -EIO;
750
751 // Since we only read in one block at a time, we have to create
752 // a bounce buffer and move the data a piece at a time between the
753 // bounce buffer and the actual transfer buffer.
754
755 len = min_t(unsigned int, sectors, info->blocksize) * info->pagesize;
756 buffer = kmalloc(len, GFP_NOIO);
757 if (!buffer)
758 return -ENOMEM;
759
760 // This could be made much more efficient by checking for
761 // contiguous LBA's. Another exercise left to the student.
762
763 result = 0;
764 offset = 0;
765 sg = NULL;
766
767 while (sectors > 0) {
768
769 /* Find number of pages we can read in this block */
770 pages = min(sectors, info->blocksize - page);
771 len = pages << info->pageshift;
772
773 /* Not overflowing capacity? */
774 if (lba >= maxlba) {
775 usb_stor_dbg(us, "Error: Requested lba %u exceeds maximum %u\n",
776 lba, maxlba);
777 result = -EIO;
778 break;
779 }
780
781 /* Find where this lba lives on disk */
782 pba = info->lba_to_pba[lba];
783
784 if (pba == UNDEF) { /* this lba was never written */
785
786 usb_stor_dbg(us, "Read %d zero pages (LBA %d) page %d\n",
787 pages, lba, page);
788
789 /*
790 * This is not really an error. It just means
791 * that the block has never been written.
792 * Instead of returning an error
793 * it is better to return all zero data.
794 */
795
796 memset(buffer, 0, len);
797
798 } else {
799 usb_stor_dbg(us, "Read %d pages, from PBA %d (LBA %d) page %d\n",
800 pages, pba, lba, page);
801
802 address = ((pba << info->blockshift) + page) <<
803 info->pageshift;
804
805 result = sddr09_read20(us, address>>1,
806 pages, info->pageshift, buffer, 0);
807 if (result)
808 break;
809 }
810
811 // Store the data in the transfer buffer
812 usb_stor_access_xfer_buf(buffer, len, us->srb,
813 &sg, &offset, TO_XFER_BUF);
814
815 page = 0;
816 lba++;
817 sectors -= pages;
818 }
819
820 kfree(buffer);
821 return result;
822}
823
824static unsigned int
825sddr09_find_unused_pba(struct sddr09_card_info *info, unsigned int lba) {
826 static unsigned int lastpba = 1;
827 int zonestart, end, i;
828
829 zonestart = (lba/1000) << 10;
830 end = info->capacity >> (info->blockshift + info->pageshift);
831 end -= zonestart;
832 if (end > 1024)
833 end = 1024;
834
835 for (i = lastpba+1; i < end; i++) {
836 if (info->pba_to_lba[zonestart+i] == UNDEF) {
837 lastpba = i;
838 return zonestart+i;
839 }
840 }
841 for (i = 0; i <= lastpba; i++) {
842 if (info->pba_to_lba[zonestart+i] == UNDEF) {
843 lastpba = i;
844 return zonestart+i;
845 }
846 }
847 return 0;
848}
849
850static int
851sddr09_write_lba(struct us_data *us, unsigned int lba,
852 unsigned int page, unsigned int pages,
853 unsigned char *ptr, unsigned char *blockbuffer) {
854
855 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
856 unsigned long address;
857 unsigned int pba, lbap;
858 unsigned int pagelen;
859 unsigned char *bptr, *cptr, *xptr;
860 unsigned char ecc[3];
861 int i, result;
862
863 lbap = ((lba % 1000) << 1) | 0x1000;
864 if (parity[MSB_of(lbap) ^ LSB_of(lbap)])
865 lbap ^= 1;
866 pba = info->lba_to_pba[lba];
867
868 if (pba == UNDEF) {
869 pba = sddr09_find_unused_pba(info, lba);
870 if (!pba) {
871 printk(KERN_WARNING
872 "sddr09_write_lba: Out of unused blocks\n");
873 return -ENOSPC;
874 }
875 info->pba_to_lba[pba] = lba;
876 info->lba_to_pba[lba] = pba;
877 }
878
879 if (pba == 1) {
880 /*
881 * Maybe it is impossible to write to PBA 1.
882 * Fake success, but don't do anything.
883 */
884 printk(KERN_WARNING "sddr09: avoid writing to pba 1\n");
885 return 0;
886 }
887
888 pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
889
890 /* read old contents */
891 address = (pba << (info->pageshift + info->blockshift));
892 result = sddr09_read22(us, address>>1, info->blocksize,
893 info->pageshift, blockbuffer, 0);
894 if (result)
895 return result;
896
897 /* check old contents and fill lba */
898 for (i = 0; i < info->blocksize; i++) {
899 bptr = blockbuffer + i*pagelen;
900 cptr = bptr + info->pagesize;
901 nand_compute_ecc(bptr, ecc);
902 if (!nand_compare_ecc(cptr+13, ecc)) {
903 usb_stor_dbg(us, "Warning: bad ecc in page %d- of pba %d\n",
904 i, pba);
905 nand_store_ecc(cptr+13, ecc);
906 }
907 nand_compute_ecc(bptr+(info->pagesize / 2), ecc);
908 if (!nand_compare_ecc(cptr+8, ecc)) {
909 usb_stor_dbg(us, "Warning: bad ecc in page %d+ of pba %d\n",
910 i, pba);
911 nand_store_ecc(cptr+8, ecc);
912 }
913 cptr[6] = cptr[11] = MSB_of(lbap);
914 cptr[7] = cptr[12] = LSB_of(lbap);
915 }
916
917 /* copy in new stuff and compute ECC */
918 xptr = ptr;
919 for (i = page; i < page+pages; i++) {
920 bptr = blockbuffer + i*pagelen;
921 cptr = bptr + info->pagesize;
922 memcpy(bptr, xptr, info->pagesize);
923 xptr += info->pagesize;
924 nand_compute_ecc(bptr, ecc);
925 nand_store_ecc(cptr+13, ecc);
926 nand_compute_ecc(bptr+(info->pagesize / 2), ecc);
927 nand_store_ecc(cptr+8, ecc);
928 }
929
930 usb_stor_dbg(us, "Rewrite PBA %d (LBA %d)\n", pba, lba);
931
932 result = sddr09_write_inplace(us, address>>1, info->blocksize,
933 info->pageshift, blockbuffer, 0);
934
935 usb_stor_dbg(us, "sddr09_write_inplace returns %d\n", result);
936
937#if 0
938 {
939 unsigned char status = 0;
940 int result2 = sddr09_read_status(us, &status);
941 if (result2)
942 usb_stor_dbg(us, "cannot read status\n");
943 else if (status != 0xc0)
944 usb_stor_dbg(us, "status after write: 0x%x\n", status);
945 }
946#endif
947
948#if 0
949 {
950 int result2 = sddr09_test_unit_ready(us);
951 }
952#endif
953
954 return result;
955}
956
957static int
958sddr09_write_data(struct us_data *us,
959 unsigned long address,
960 unsigned int sectors) {
961
962 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
963 unsigned int lba, maxlba, page, pages;
964 unsigned int pagelen, blocklen;
965 unsigned char *blockbuffer;
966 unsigned char *buffer;
967 unsigned int len, offset;
968 struct scatterlist *sg;
969 int result;
970
971 /* Figure out the initial LBA and page */
972 lba = address >> info->blockshift;
973 page = (address & info->blockmask);
974 maxlba = info->capacity >> (info->pageshift + info->blockshift);
975 if (lba >= maxlba)
976 return -EIO;
977
978 /*
979 * blockbuffer is used for reading in the old data, overwriting
980 * with the new data, and performing ECC calculations
981 */
982
983 /*
984 * TODO: instead of doing kmalloc/kfree for each write,
985 * add a bufferpointer to the info structure
986 */
987
988 pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT);
989 blocklen = (pagelen << info->blockshift);
990 blockbuffer = kmalloc(blocklen, GFP_NOIO);
991 if (!blockbuffer)
992 return -ENOMEM;
993
994 /*
995 * Since we don't write the user data directly to the device,
996 * we have to create a bounce buffer and move the data a piece
997 * at a time between the bounce buffer and the actual transfer buffer.
998 */
999
1000 len = min_t(unsigned int, sectors, info->blocksize) * info->pagesize;
1001 buffer = kmalloc(len, GFP_NOIO);
1002 if (!buffer) {
1003 kfree(blockbuffer);
1004 return -ENOMEM;
1005 }
1006
1007 result = 0;
1008 offset = 0;
1009 sg = NULL;
1010
1011 while (sectors > 0) {
1012
1013 /* Write as many sectors as possible in this block */
1014
1015 pages = min(sectors, info->blocksize - page);
1016 len = (pages << info->pageshift);
1017
1018 /* Not overflowing capacity? */
1019 if (lba >= maxlba) {
1020 usb_stor_dbg(us, "Error: Requested lba %u exceeds maximum %u\n",
1021 lba, maxlba);
1022 result = -EIO;
1023 break;
1024 }
1025
1026 /* Get the data from the transfer buffer */
1027 usb_stor_access_xfer_buf(buffer, len, us->srb,
1028 &sg, &offset, FROM_XFER_BUF);
1029
1030 result = sddr09_write_lba(us, lba, page, pages,
1031 buffer, blockbuffer);
1032 if (result)
1033 break;
1034
1035 page = 0;
1036 lba++;
1037 sectors -= pages;
1038 }
1039
1040 kfree(buffer);
1041 kfree(blockbuffer);
1042
1043 return result;
1044}
1045
1046static int
1047sddr09_read_control(struct us_data *us,
1048 unsigned long address,
1049 unsigned int blocks,
1050 unsigned char *content,
1051 int use_sg) {
1052
1053 usb_stor_dbg(us, "Read control address %lu, blocks %d\n",
1054 address, blocks);
1055
1056 return sddr09_read21(us, address, blocks,
1057 CONTROL_SHIFT, content, use_sg);
1058}
1059
1060/*
1061 * Read Device ID Command: 12 bytes.
1062 * byte 0: opcode: ED
1063 *
1064 * Returns 2 bytes: Manufacturer ID and Device ID.
1065 * On more recent cards 3 bytes: the third byte is an option code A5
1066 * signifying that the secret command to read an 128-bit ID is available.
1067 * On still more recent cards 4 bytes: the fourth byte C0 means that
1068 * a second read ID cmd is available.
1069 */
1070static int
1071sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) {
1072 unsigned char *command = us->iobuf;
1073 unsigned char *content = us->iobuf;
1074 int result, i;
1075
1076 memset(command, 0, 12);
1077 command[0] = 0xED;
1078 command[1] = LUNBITS;
1079
1080 result = sddr09_send_scsi_command(us, command, 12);
1081 if (result)
1082 return result;
1083
1084 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
1085 content, 64, NULL);
1086
1087 for (i = 0; i < 4; i++)
1088 deviceID[i] = content[i];
1089
1090 return (result == USB_STOR_XFER_GOOD ? 0 : -EIO);
1091}
1092
1093static int
1094sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) {
1095 int result;
1096 unsigned char status;
1097 const char *wp_fmt;
1098
1099 result = sddr09_read_status(us, &status);
1100 if (result) {
1101 usb_stor_dbg(us, "read_status fails\n");
1102 return result;
1103 }
1104 if ((status & 0x80) == 0) {
1105 info->flags |= SDDR09_WP; /* write protected */
1106 wp_fmt = " WP";
1107 } else {
1108 wp_fmt = "";
1109 }
1110 usb_stor_dbg(us, "status 0x%02X%s%s%s%s\n", status, wp_fmt,
1111 status & 0x40 ? " Ready" : "",
1112 status & LUNBITS ? " Suspended" : "",
1113 status & 0x01 ? " Error" : "");
1114
1115 return 0;
1116}
1117
1118#if 0
1119/*
1120 * Reset Command: 12 bytes.
1121 * byte 0: opcode: EB
1122 */
1123static int
1124sddr09_reset(struct us_data *us) {
1125
1126 unsigned char *command = us->iobuf;
1127
1128 memset(command, 0, 12);
1129 command[0] = 0xEB;
1130 command[1] = LUNBITS;
1131
1132 return sddr09_send_scsi_command(us, command, 12);
1133}
1134#endif
1135
1136static struct nand_flash_dev *
1137sddr09_get_cardinfo(struct us_data *us, unsigned char flags) {
1138 struct nand_flash_dev *cardinfo;
1139 unsigned char deviceID[4];
1140 char blurbtxt[256];
1141 int result;
1142
1143 usb_stor_dbg(us, "Reading capacity...\n");
1144
1145 result = sddr09_read_deviceID(us, deviceID);
1146
1147 if (result) {
1148 usb_stor_dbg(us, "Result of read_deviceID is %d\n", result);
1149 printk(KERN_WARNING "sddr09: could not read card info\n");
1150 return NULL;
1151 }
1152
1153 sprintf(blurbtxt, "sddr09: Found Flash card, ID = %4ph", deviceID);
1154
1155 /* Byte 0 is the manufacturer */
1156 sprintf(blurbtxt + strlen(blurbtxt),
1157 ": Manuf. %s",
1158 nand_flash_manufacturer(deviceID[0]));
1159
1160 /* Byte 1 is the device type */
1161 cardinfo = nand_find_id(deviceID[1]);
1162 if (cardinfo) {
1163 /*
1164 * MB or MiB? It is neither. A 16 MB card has
1165 * 17301504 raw bytes, of which 16384000 are
1166 * usable for user data.
1167 */
1168 sprintf(blurbtxt + strlen(blurbtxt),
1169 ", %d MB", 1<<(cardinfo->chipshift - 20));
1170 } else {
1171 sprintf(blurbtxt + strlen(blurbtxt),
1172 ", type unrecognized");
1173 }
1174
1175 /* Byte 2 is code to signal availability of 128-bit ID */
1176 if (deviceID[2] == 0xa5) {
1177 sprintf(blurbtxt + strlen(blurbtxt),
1178 ", 128-bit ID");
1179 }
1180
1181 /* Byte 3 announces the availability of another read ID command */
1182 if (deviceID[3] == 0xc0) {
1183 sprintf(blurbtxt + strlen(blurbtxt),
1184 ", extra cmd");
1185 }
1186
1187 if (flags & SDDR09_WP)
1188 sprintf(blurbtxt + strlen(blurbtxt),
1189 ", WP");
1190
1191 printk(KERN_WARNING "%s\n", blurbtxt);
1192
1193 return cardinfo;
1194}
1195
1196static int
1197sddr09_read_map(struct us_data *us) {
1198
1199 struct sddr09_card_info *info = (struct sddr09_card_info *) us->extra;
1200 int numblocks, alloc_len, alloc_blocks;
1201 int i, j, result;
1202 unsigned char *buffer, *buffer_end, *ptr;
1203 unsigned int lba, lbact;
1204
1205 if (!info->capacity)
1206 return -1;
1207
1208 /*
1209 * size of a block is 1 << (blockshift + pageshift) bytes
1210 * divide into the total capacity to get the number of blocks
1211 */
1212
1213 numblocks = info->capacity >> (info->blockshift + info->pageshift);
1214
1215 /*
1216 * read 64 bytes for every block (actually 1 << CONTROL_SHIFT)
1217 * but only use a 64 KB buffer
1218 * buffer size used must be a multiple of (1 << CONTROL_SHIFT)
1219 */
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) {
1226 result = -1;
1227 goto done;
1228 }
1229 buffer_end = buffer + alloc_len;
1230
1231#undef SDDR09_READ_MAP_BUFSZ
1232
1233 kfree(info->lba_to_pba);
1234 kfree(info->pba_to_lba);
1235 info->lba_to_pba = kmalloc_array(numblocks, sizeof(int), GFP_NOIO);
1236 info->pba_to_lba = kmalloc_array(numblocks, sizeof(int), GFP_NOIO);
1237
1238 if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) {
1239 printk(KERN_WARNING "sddr09_read_map: out of memory\n");
1240 result = -1;
1241 goto done;
1242 }
1243
1244 for (i = 0; i < numblocks; i++)
1245 info->lba_to_pba[i] = info->pba_to_lba[i] = UNDEF;
1246
1247 /*
1248 * Define lba-pba translation table
1249 */
1250
1251 ptr = buffer_end;
1252 for (i = 0; i < numblocks; i++) {
1253 ptr += (1 << CONTROL_SHIFT);
1254 if (ptr >= buffer_end) {
1255 unsigned long address;
1256
1257 address = i << (info->pageshift + info->blockshift);
1258 result = sddr09_read_control(
1259 us, address>>1,
1260 min(alloc_blocks, numblocks - i),
1261 buffer, 0);
1262 if (result) {
1263 result = -1;
1264 goto done;
1265 }
1266 ptr = buffer;
1267 }
1268
1269 if (i == 0 || i == 1) {
1270 info->pba_to_lba[i] = UNUSABLE;
1271 continue;
1272 }
1273
1274 /* special PBAs have control field 0^16 */
1275 for (j = 0; j < 16; j++)
1276 if (ptr[j] != 0)
1277 goto nonz;
1278 info->pba_to_lba[i] = UNUSABLE;
1279 printk(KERN_WARNING "sddr09: PBA %d has no logical mapping\n",
1280 i);
1281 continue;
1282
1283 nonz:
1284 /* unwritten PBAs have control field FF^16 */
1285 for (j = 0; j < 16; j++)
1286 if (ptr[j] != 0xff)
1287 goto nonff;
1288 continue;
1289
1290 nonff:
1291 /* normal PBAs start with six FFs */
1292 if (j < 6) {
1293 printk(KERN_WARNING
1294 "sddr09: PBA %d has no logical mapping: "
1295 "reserved area = %02X%02X%02X%02X "
1296 "data status %02X block status %02X\n",
1297 i, ptr[0], ptr[1], ptr[2], ptr[3],
1298 ptr[4], ptr[5]);
1299 info->pba_to_lba[i] = UNUSABLE;
1300 continue;
1301 }
1302
1303 if ((ptr[6] >> 4) != 0x01) {
1304 printk(KERN_WARNING
1305 "sddr09: PBA %d has invalid address field "
1306 "%02X%02X/%02X%02X\n",
1307 i, ptr[6], ptr[7], ptr[11], ptr[12]);
1308 info->pba_to_lba[i] = UNUSABLE;
1309 continue;
1310 }
1311
1312 /* check even parity */
1313 if (parity[ptr[6] ^ ptr[7]]) {
1314 printk(KERN_WARNING
1315 "sddr09: Bad parity in LBA for block %d"
1316 " (%02X %02X)\n", i, ptr[6], ptr[7]);
1317 info->pba_to_lba[i] = UNUSABLE;
1318 continue;
1319 }
1320
1321 lba = short_pack(ptr[7], ptr[6]);
1322 lba = (lba & 0x07FF) >> 1;
1323
1324 /*
1325 * Every 1024 physical blocks ("zone"), the LBA numbers
1326 * go back to zero, but are within a higher block of LBA's.
1327 * Also, there is a maximum of 1000 LBA's per zone.
1328 * In other words, in PBA 1024-2047 you will find LBA 0-999
1329 * which are really LBA 1000-1999. This allows for 24 bad
1330 * or special physical blocks per zone.
1331 */
1332
1333 if (lba >= 1000) {
1334 printk(KERN_WARNING
1335 "sddr09: Bad low LBA %d for block %d\n",
1336 lba, i);
1337 goto possibly_erase;
1338 }
1339
1340 lba += 1000*(i/0x400);
1341
1342 if (info->lba_to_pba[lba] != UNDEF) {
1343 printk(KERN_WARNING
1344 "sddr09: LBA %d seen for PBA %d and %d\n",
1345 lba, info->lba_to_pba[lba], i);
1346 goto possibly_erase;
1347 }
1348
1349 info->pba_to_lba[i] = lba;
1350 info->lba_to_pba[lba] = i;
1351 continue;
1352
1353 possibly_erase:
1354 if (erase_bad_lba_entries) {
1355 unsigned long address;
1356
1357 address = (i << (info->pageshift + info->blockshift));
1358 sddr09_erase(us, address>>1);
1359 info->pba_to_lba[i] = UNDEF;
1360 } else
1361 info->pba_to_lba[i] = UNUSABLE;
1362 }
1363
1364 /*
1365 * Approximate capacity. This is not entirely correct yet,
1366 * since a zone with less than 1000 usable pages leads to
1367 * missing LBAs. Especially if it is the last zone, some
1368 * LBAs can be past capacity.
1369 */
1370 lbact = 0;
1371 for (i = 0; i < numblocks; i += 1024) {
1372 int ct = 0;
1373
1374 for (j = 0; j < 1024 && i+j < numblocks; j++) {
1375 if (info->pba_to_lba[i+j] != UNUSABLE) {
1376 if (ct >= 1000)
1377 info->pba_to_lba[i+j] = SPARE;
1378 else
1379 ct++;
1380 }
1381 }
1382 lbact += ct;
1383 }
1384 info->lbact = lbact;
1385 usb_stor_dbg(us, "Found %d LBA's\n", lbact);
1386 result = 0;
1387
1388 done:
1389 if (result != 0) {
1390 kfree(info->lba_to_pba);
1391 kfree(info->pba_to_lba);
1392 info->lba_to_pba = NULL;
1393 info->pba_to_lba = NULL;
1394 }
1395 kfree(buffer);
1396 return result;
1397}
1398
1399static void
1400sddr09_card_info_destructor(void *extra) {
1401 struct sddr09_card_info *info = (struct sddr09_card_info *)extra;
1402
1403 if (!info)
1404 return;
1405
1406 kfree(info->lba_to_pba);
1407 kfree(info->pba_to_lba);
1408}
1409
1410static int
1411sddr09_common_init(struct us_data *us) {
1412 int result;
1413
1414 /* set the configuration -- STALL is an acceptable response here */
1415 if (us->pusb_dev->actconfig->desc.bConfigurationValue != 1) {
1416 usb_stor_dbg(us, "active config #%d != 1 ??\n",
1417 us->pusb_dev->actconfig->desc.bConfigurationValue);
1418 return -EINVAL;
1419 }
1420
1421 result = usb_reset_configuration(us->pusb_dev);
1422 usb_stor_dbg(us, "Result of usb_reset_configuration is %d\n", result);
1423 if (result == -EPIPE) {
1424 usb_stor_dbg(us, "-- stall on control interface\n");
1425 } else if (result != 0) {
1426 /* it's not a stall, but another error -- time to bail */
1427 usb_stor_dbg(us, "-- Unknown error. Rejecting device\n");
1428 return -EINVAL;
1429 }
1430
1431 us->extra = kzalloc(sizeof(struct sddr09_card_info), GFP_NOIO);
1432 if (!us->extra)
1433 return -ENOMEM;
1434 us->extra_destructor = sddr09_card_info_destructor;
1435
1436 nand_init_ecc();
1437 return 0;
1438}
1439
1440
1441/*
1442 * This is needed at a very early stage. If this is not listed in the
1443 * unusual devices list but called from here then LUN 0 of the combo reader
1444 * is not recognized. But I do not know what precisely these calls do.
1445 */
1446static int
1447usb_stor_sddr09_dpcm_init(struct us_data *us) {
1448 int result;
1449 unsigned char *data = us->iobuf;
1450
1451 result = sddr09_common_init(us);
1452 if (result)
1453 return result;
1454
1455 result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2);
1456 if (result) {
1457 usb_stor_dbg(us, "send_command fails\n");
1458 return result;
1459 }
1460
1461 usb_stor_dbg(us, "%02X %02X\n", data[0], data[1]);
1462 // get 07 02
1463
1464 result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2);
1465 if (result) {
1466 usb_stor_dbg(us, "2nd send_command fails\n");
1467 return result;
1468 }
1469
1470 usb_stor_dbg(us, "%02X %02X\n", data[0], data[1]);
1471 // get 07 00
1472
1473 result = sddr09_request_sense(us, data, 18);
1474 if (result == 0 && data[2] != 0) {
1475 int j;
1476 for (j=0; j<18; j++)
1477 printk(" %02X", data[j]);
1478 printk("\n");
1479 // get 70 00 00 00 00 00 00 * 00 00 00 00 00 00
1480 // 70: current command
1481 // sense key 0, sense code 0, extd sense code 0
1482 // additional transfer length * = sizeof(data) - 7
1483 // Or: 70 00 06 00 00 00 00 0b 00 00 00 00 28 00 00 00 00 00
1484 // sense key 06, sense code 28: unit attention,
1485 // not ready to ready transition
1486 }
1487
1488 // test unit ready
1489
1490 return 0; /* not result */
1491}
1492
1493/*
1494 * Transport for the Microtech DPCM-USB
1495 */
1496static int dpcm_transport(struct scsi_cmnd *srb, struct us_data *us)
1497{
1498 int ret;
1499
1500 usb_stor_dbg(us, "LUN=%d\n", (u8)srb->device->lun);
1501
1502 switch (srb->device->lun) {
1503 case 0:
1504
1505 /*
1506 * LUN 0 corresponds to the CompactFlash card reader.
1507 */
1508 ret = usb_stor_CB_transport(srb, us);
1509 break;
1510
1511 case 1:
1512
1513 /*
1514 * LUN 1 corresponds to the SmartMedia card reader.
1515 */
1516
1517 /*
1518 * Set the LUN to 0 (just in case).
1519 */
1520 srb->device->lun = 0;
1521 ret = sddr09_transport(srb, us);
1522 srb->device->lun = 1;
1523 break;
1524
1525 default:
1526 usb_stor_dbg(us, "Invalid LUN %d\n", (u8)srb->device->lun);
1527 ret = USB_STOR_TRANSPORT_ERROR;
1528 break;
1529 }
1530 return ret;
1531}
1532
1533
1534/*
1535 * Transport for the Sandisk SDDR-09
1536 */
1537static int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us)
1538{
1539 static unsigned char sensekey = 0, sensecode = 0;
1540 static unsigned char havefakesense = 0;
1541 int result, i;
1542 unsigned char *ptr = us->iobuf;
1543 unsigned long capacity;
1544 unsigned int page, pages;
1545
1546 struct sddr09_card_info *info;
1547
1548 static unsigned char inquiry_response[8] = {
1549 0x00, 0x80, 0x00, 0x02, 0x1F, 0x00, 0x00, 0x00
1550 };
1551
1552 /* note: no block descriptor support */
1553 static unsigned char mode_page_01[19] = {
1554 0x00, 0x0F, 0x00, 0x0, 0x0, 0x0, 0x00,
1555 0x01, 0x0A,
1556 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
1557 };
1558
1559 info = (struct sddr09_card_info *)us->extra;
1560
1561 if (srb->cmnd[0] == REQUEST_SENSE && havefakesense) {
1562 /* for a faked command, we have to follow with a faked sense */
1563 memset(ptr, 0, 18);
1564 ptr[0] = 0x70;
1565 ptr[2] = sensekey;
1566 ptr[7] = 11;
1567 ptr[12] = sensecode;
1568 usb_stor_set_xfer_buf(ptr, 18, srb);
1569 sensekey = sensecode = havefakesense = 0;
1570 return USB_STOR_TRANSPORT_GOOD;
1571 }
1572
1573 havefakesense = 1;
1574
1575 /*
1576 * Dummy up a response for INQUIRY since SDDR09 doesn't
1577 * respond to INQUIRY commands
1578 */
1579
1580 if (srb->cmnd[0] == INQUIRY) {
1581 memcpy(ptr, inquiry_response, 8);
1582 fill_inquiry_response(us, ptr, 36);
1583 return USB_STOR_TRANSPORT_GOOD;
1584 }
1585
1586 if (srb->cmnd[0] == READ_CAPACITY) {
1587 struct nand_flash_dev *cardinfo;
1588
1589 sddr09_get_wp(us, info); /* read WP bit */
1590
1591 cardinfo = sddr09_get_cardinfo(us, info->flags);
1592 if (!cardinfo) {
1593 /* probably no media */
1594 init_error:
1595 sensekey = 0x02; /* not ready */
1596 sensecode = 0x3a; /* medium not present */
1597 return USB_STOR_TRANSPORT_FAILED;
1598 }
1599
1600 info->capacity = (1 << cardinfo->chipshift);
1601 info->pageshift = cardinfo->pageshift;
1602 info->pagesize = (1 << info->pageshift);
1603 info->blockshift = cardinfo->blockshift;
1604 info->blocksize = (1 << info->blockshift);
1605 info->blockmask = info->blocksize - 1;
1606
1607 // map initialization, must follow get_cardinfo()
1608 if (sddr09_read_map(us)) {
1609 /* probably out of memory */
1610 goto init_error;
1611 }
1612
1613 // Report capacity
1614
1615 capacity = (info->lbact << info->blockshift) - 1;
1616
1617 ((__be32 *) ptr)[0] = cpu_to_be32(capacity);
1618
1619 // Report page size
1620
1621 ((__be32 *) ptr)[1] = cpu_to_be32(info->pagesize);
1622 usb_stor_set_xfer_buf(ptr, 8, srb);
1623
1624 return USB_STOR_TRANSPORT_GOOD;
1625 }
1626
1627 if (srb->cmnd[0] == MODE_SENSE_10) {
1628 int modepage = (srb->cmnd[2] & 0x3F);
1629
1630 /*
1631 * They ask for the Read/Write error recovery page,
1632 * or for all pages.
1633 */
1634 /* %% We should check DBD %% */
1635 if (modepage == 0x01 || modepage == 0x3F) {
1636 usb_stor_dbg(us, "Dummy up request for mode page 0x%x\n",
1637 modepage);
1638
1639 memcpy(ptr, mode_page_01, sizeof(mode_page_01));
1640 ((__be16*)ptr)[0] = cpu_to_be16(sizeof(mode_page_01) - 2);
1641 ptr[3] = (info->flags & SDDR09_WP) ? 0x80 : 0;
1642 usb_stor_set_xfer_buf(ptr, sizeof(mode_page_01), srb);
1643 return USB_STOR_TRANSPORT_GOOD;
1644 }
1645
1646 sensekey = 0x05; /* illegal request */
1647 sensecode = 0x24; /* invalid field in CDB */
1648 return USB_STOR_TRANSPORT_FAILED;
1649 }
1650
1651 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)
1652 return USB_STOR_TRANSPORT_GOOD;
1653
1654 havefakesense = 0;
1655
1656 if (srb->cmnd[0] == READ_10) {
1657
1658 page = short_pack(srb->cmnd[3], srb->cmnd[2]);
1659 page <<= 16;
1660 page |= short_pack(srb->cmnd[5], srb->cmnd[4]);
1661 pages = short_pack(srb->cmnd[8], srb->cmnd[7]);
1662
1663 usb_stor_dbg(us, "READ_10: read page %d pagect %d\n",
1664 page, pages);
1665
1666 result = sddr09_read_data(us, page, pages);
1667 return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
1668 USB_STOR_TRANSPORT_ERROR);
1669 }
1670
1671 if (srb->cmnd[0] == WRITE_10) {
1672
1673 page = short_pack(srb->cmnd[3], srb->cmnd[2]);
1674 page <<= 16;
1675 page |= short_pack(srb->cmnd[5], srb->cmnd[4]);
1676 pages = short_pack(srb->cmnd[8], srb->cmnd[7]);
1677
1678 usb_stor_dbg(us, "WRITE_10: write page %d pagect %d\n",
1679 page, pages);
1680
1681 result = sddr09_write_data(us, page, pages);
1682 return (result == 0 ? USB_STOR_TRANSPORT_GOOD :
1683 USB_STOR_TRANSPORT_ERROR);
1684 }
1685
1686 /*
1687 * catch-all for all other commands, except
1688 * pass TEST_UNIT_READY and REQUEST_SENSE through
1689 */
1690 if (srb->cmnd[0] != TEST_UNIT_READY &&
1691 srb->cmnd[0] != REQUEST_SENSE) {
1692 sensekey = 0x05; /* illegal request */
1693 sensecode = 0x20; /* invalid command */
1694 havefakesense = 1;
1695 return USB_STOR_TRANSPORT_FAILED;
1696 }
1697
1698 for (; srb->cmd_len<12; srb->cmd_len++)
1699 srb->cmnd[srb->cmd_len] = 0;
1700
1701 srb->cmnd[1] = LUNBITS;
1702
1703 ptr[0] = 0;
1704 for (i=0; i<12; i++)
1705 sprintf(ptr+strlen(ptr), "%02X ", srb->cmnd[i]);
1706
1707 usb_stor_dbg(us, "Send control for command %s\n", ptr);
1708
1709 result = sddr09_send_scsi_command(us, srb->cmnd, 12);
1710 if (result) {
1711 usb_stor_dbg(us, "sddr09_send_scsi_command returns %d\n",
1712 result);
1713 return USB_STOR_TRANSPORT_ERROR;
1714 }
1715
1716 if (scsi_bufflen(srb) == 0)
1717 return USB_STOR_TRANSPORT_GOOD;
1718
1719 if (srb->sc_data_direction == DMA_TO_DEVICE ||
1720 srb->sc_data_direction == DMA_FROM_DEVICE) {
1721 unsigned int pipe = (srb->sc_data_direction == DMA_TO_DEVICE)
1722 ? us->send_bulk_pipe : us->recv_bulk_pipe;
1723
1724 usb_stor_dbg(us, "%s %d bytes\n",
1725 (srb->sc_data_direction == DMA_TO_DEVICE) ?
1726 "sending" : "receiving",
1727 scsi_bufflen(srb));
1728
1729 result = usb_stor_bulk_srb(us, pipe, srb);
1730
1731 return (result == USB_STOR_XFER_GOOD ?
1732 USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
1733 }
1734
1735 return USB_STOR_TRANSPORT_GOOD;
1736}
1737
1738/*
1739 * Initialization routine for the sddr09 subdriver
1740 */
1741static int
1742usb_stor_sddr09_init(struct us_data *us) {
1743 return sddr09_common_init(us);
1744}
1745
1746static struct scsi_host_template sddr09_host_template;
1747
1748static int sddr09_probe(struct usb_interface *intf,
1749 const struct usb_device_id *id)
1750{
1751 struct us_data *us;
1752 int result;
1753
1754 result = usb_stor_probe1(&us, intf, id,
1755 (id - sddr09_usb_ids) + sddr09_unusual_dev_list,
1756 &sddr09_host_template);
1757 if (result)
1758 return result;
1759
1760 if (us->protocol == USB_PR_DPCM_USB) {
1761 us->transport_name = "Control/Bulk-EUSB/SDDR09";
1762 us->transport = dpcm_transport;
1763 us->transport_reset = usb_stor_CB_reset;
1764 us->max_lun = 1;
1765 } else {
1766 us->transport_name = "EUSB/SDDR09";
1767 us->transport = sddr09_transport;
1768 us->transport_reset = usb_stor_CB_reset;
1769 us->max_lun = 0;
1770 }
1771
1772 result = usb_stor_probe2(us);
1773 return result;
1774}
1775
1776static struct usb_driver sddr09_driver = {
1777 .name = DRV_NAME,
1778 .probe = sddr09_probe,
1779 .disconnect = usb_stor_disconnect,
1780 .suspend = usb_stor_suspend,
1781 .resume = usb_stor_resume,
1782 .reset_resume = usb_stor_reset_resume,
1783 .pre_reset = usb_stor_pre_reset,
1784 .post_reset = usb_stor_post_reset,
1785 .id_table = sddr09_usb_ids,
1786 .soft_unbind = 1,
1787 .no_dynamic_id = 1,
1788};
1789
1790module_usb_stor_driver(sddr09_driver, sddr09_host_template, DRV_NAME);
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);