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b7b1e655 | 1 | /* Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable |
1da177e4 LT |
2 | * |
3 | * $Id: shuttle_usbat.c,v 1.17 2002/04/22 03:39:43 mdharm Exp $ | |
4 | * | |
5 | * Current development and maintenance by: | |
6 | * (c) 2000, 2001 Robert Baruch (autophile@starband.net) | |
7 | * (c) 2004, 2005 Daniel Drake <dsd@gentoo.org> | |
8 | * | |
9 | * Developed with the assistance of: | |
10 | * (c) 2002 Alan Stern <stern@rowland.org> | |
11 | * | |
12 | * Flash support based on earlier work by: | |
13 | * (c) 2002 Thomas Kreiling <usbdev@sm04.de> | |
14 | * | |
15 | * Many originally ATAPI devices were slightly modified to meet the USB | |
16 | * market by using some kind of translation from ATAPI to USB on the host, | |
17 | * and the peripheral would translate from USB back to ATAPI. | |
18 | * | |
19 | * SCM Microsystems (www.scmmicro.com) makes a device, sold to OEM's only, | |
20 | * which does the USB-to-ATAPI conversion. By obtaining the data sheet on | |
21 | * their device under nondisclosure agreement, I have been able to write | |
22 | * this driver for Linux. | |
23 | * | |
24 | * The chip used in the device can also be used for EPP and ISA translation | |
25 | * as well. This driver is only guaranteed to work with the ATAPI | |
26 | * translation. | |
27 | * | |
28 | * See the Kconfig help text for a list of devices known to be supported by | |
29 | * this driver. | |
30 | * | |
31 | * This program is free software; you can redistribute it and/or modify it | |
32 | * under the terms of the GNU General Public License as published by the | |
33 | * Free Software Foundation; either version 2, or (at your option) any | |
34 | * later version. | |
35 | * | |
36 | * This program is distributed in the hope that it will be useful, but | |
37 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
38 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
39 | * General Public License for more details. | |
40 | * | |
41 | * You should have received a copy of the GNU General Public License along | |
42 | * with this program; if not, write to the Free Software Foundation, Inc., | |
43 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
44 | */ | |
45 | ||
46 | #include <linux/sched.h> | |
47 | #include <linux/errno.h> | |
48 | #include <linux/slab.h> | |
49 | #include <linux/cdrom.h> | |
50 | ||
51 | #include <scsi/scsi.h> | |
52 | #include <scsi/scsi_cmnd.h> | |
53 | ||
54 | #include "usb.h" | |
55 | #include "transport.h" | |
56 | #include "protocol.h" | |
57 | #include "debug.h" | |
58 | #include "shuttle_usbat.h" | |
59 | ||
60 | #define short_pack(LSB,MSB) ( ((u16)(LSB)) | ( ((u16)(MSB))<<8 ) ) | |
61 | #define LSB_of(s) ((s)&0xFF) | |
62 | #define MSB_of(s) ((s)>>8) | |
63 | ||
64 | static int transferred = 0; | |
65 | ||
66 | static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us); | |
67 | static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us); | |
68 | ||
69 | /* | |
b7b1e655 | 70 | * Convenience function to produce an ATA read/write sectors command |
1da177e4 LT |
71 | * Use cmd=0x20 for read, cmd=0x30 for write |
72 | */ | |
b7b1e655 | 73 | static void usbat_pack_ata_sector_cmd(unsigned char *buf, |
1da177e4 LT |
74 | unsigned char thistime, |
75 | u32 sector, unsigned char cmd) | |
76 | { | |
77 | buf[0] = 0; | |
78 | buf[1] = thistime; | |
79 | buf[2] = sector & 0xFF; | |
80 | buf[3] = (sector >> 8) & 0xFF; | |
81 | buf[4] = (sector >> 16) & 0xFF; | |
82 | buf[5] = 0xE0 | ((sector >> 24) & 0x0F); | |
83 | buf[6] = cmd; | |
84 | } | |
85 | ||
86 | /* | |
87 | * Convenience function to get the device type (flash or hp8200) | |
88 | */ | |
89 | static int usbat_get_device_type(struct us_data *us) | |
90 | { | |
91 | return ((struct usbat_info*)us->extra)->devicetype; | |
92 | } | |
93 | ||
94 | /* | |
95 | * Read a register from the device | |
96 | */ | |
97 | static int usbat_read(struct us_data *us, | |
98 | unsigned char access, | |
99 | unsigned char reg, | |
100 | unsigned char *content) | |
101 | { | |
102 | return usb_stor_ctrl_transfer(us, | |
103 | us->recv_ctrl_pipe, | |
104 | access | USBAT_CMD_READ_REG, | |
105 | 0xC0, | |
106 | (u16)reg, | |
107 | 0, | |
108 | content, | |
109 | 1); | |
110 | } | |
111 | ||
112 | /* | |
113 | * Write to a register on the device | |
114 | */ | |
115 | static int usbat_write(struct us_data *us, | |
116 | unsigned char access, | |
117 | unsigned char reg, | |
118 | unsigned char content) | |
119 | { | |
120 | return usb_stor_ctrl_transfer(us, | |
121 | us->send_ctrl_pipe, | |
122 | access | USBAT_CMD_WRITE_REG, | |
123 | 0x40, | |
124 | short_pack(reg, content), | |
125 | 0, | |
126 | NULL, | |
127 | 0); | |
128 | } | |
129 | ||
130 | /* | |
131 | * Convenience function to perform a bulk read | |
132 | */ | |
133 | static int usbat_bulk_read(struct us_data *us, | |
141804d4 PC |
134 | unsigned char *data, |
135 | unsigned int len, | |
136 | int use_sg) | |
1da177e4 LT |
137 | { |
138 | if (len == 0) | |
139 | return USB_STOR_XFER_GOOD; | |
140 | ||
141 | US_DEBUGP("usbat_bulk_read: len = %d\n", len); | |
141804d4 | 142 | return usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, data, len, use_sg, NULL); |
1da177e4 LT |
143 | } |
144 | ||
145 | /* | |
146 | * Convenience function to perform a bulk write | |
147 | */ | |
148 | static int usbat_bulk_write(struct us_data *us, | |
141804d4 PC |
149 | unsigned char *data, |
150 | unsigned int len, | |
151 | int use_sg) | |
1da177e4 LT |
152 | { |
153 | if (len == 0) | |
154 | return USB_STOR_XFER_GOOD; | |
155 | ||
156 | US_DEBUGP("usbat_bulk_write: len = %d\n", len); | |
141804d4 | 157 | return usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, data, len, use_sg, NULL); |
1da177e4 LT |
158 | } |
159 | ||
160 | /* | |
161 | * Some USBAT-specific commands can only be executed over a command transport | |
162 | * This transport allows one (len=8) or two (len=16) vendor-specific commands | |
163 | * to be executed. | |
164 | */ | |
165 | static int usbat_execute_command(struct us_data *us, | |
166 | unsigned char *commands, | |
167 | unsigned int len) | |
168 | { | |
169 | return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, | |
170 | USBAT_CMD_EXEC_CMD, 0x40, 0, 0, | |
171 | commands, len); | |
172 | } | |
173 | ||
174 | /* | |
175 | * Read the status register | |
176 | */ | |
177 | static int usbat_get_status(struct us_data *us, unsigned char *status) | |
178 | { | |
179 | int rc; | |
180 | rc = usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status); | |
181 | ||
182 | US_DEBUGP("usbat_get_status: 0x%02X\n", (unsigned short) (*status)); | |
183 | return rc; | |
184 | } | |
185 | ||
186 | /* | |
187 | * Check the device status | |
188 | */ | |
189 | static int usbat_check_status(struct us_data *us) | |
190 | { | |
191 | unsigned char *reply = us->iobuf; | |
192 | int rc; | |
193 | ||
194 | if (!us) | |
195 | return USB_STOR_TRANSPORT_ERROR; | |
196 | ||
197 | rc = usbat_get_status(us, reply); | |
198 | if (rc != USB_STOR_XFER_GOOD) | |
199 | return USB_STOR_TRANSPORT_FAILED; | |
200 | ||
b7b1e655 DD |
201 | /* error/check condition (0x51 is ok) */ |
202 | if (*reply & 0x01 && *reply != 0x51) | |
1da177e4 LT |
203 | return USB_STOR_TRANSPORT_FAILED; |
204 | ||
b7b1e655 DD |
205 | /* device fault */ |
206 | if (*reply & 0x20) | |
1da177e4 LT |
207 | return USB_STOR_TRANSPORT_FAILED; |
208 | ||
209 | return USB_STOR_TRANSPORT_GOOD; | |
210 | } | |
211 | ||
212 | /* | |
213 | * Stores critical information in internal registers in prepartion for the execution | |
214 | * of a conditional usbat_read_blocks or usbat_write_blocks call. | |
215 | */ | |
216 | static int usbat_set_shuttle_features(struct us_data *us, | |
217 | unsigned char external_trigger, | |
218 | unsigned char epp_control, | |
219 | unsigned char mask_byte, | |
220 | unsigned char test_pattern, | |
221 | unsigned char subcountH, | |
222 | unsigned char subcountL) | |
223 | { | |
224 | unsigned char *command = us->iobuf; | |
225 | ||
226 | command[0] = 0x40; | |
227 | command[1] = USBAT_CMD_SET_FEAT; | |
228 | ||
b7b1e655 DD |
229 | /* |
230 | * The only bit relevant to ATA access is bit 6 | |
231 | * which defines 8 bit data access (set) or 16 bit (unset) | |
232 | */ | |
1da177e4 LT |
233 | command[2] = epp_control; |
234 | ||
b7b1e655 DD |
235 | /* |
236 | * If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1, | |
237 | * ET1 and ET2 define an external event to be checked for on event of a | |
238 | * _read_blocks or _write_blocks operation. The read/write will not take | |
239 | * place unless the defined trigger signal is active. | |
240 | */ | |
1da177e4 LT |
241 | command[3] = external_trigger; |
242 | ||
b7b1e655 DD |
243 | /* |
244 | * The resultant byte of the mask operation (see mask_byte) is compared for | |
245 | * equivalence with this test pattern. If equal, the read/write will take | |
246 | * place. | |
247 | */ | |
1da177e4 LT |
248 | command[4] = test_pattern; |
249 | ||
b7b1e655 DD |
250 | /* |
251 | * This value is logically ANDed with the status register field specified | |
252 | * in the read/write command. | |
253 | */ | |
1da177e4 LT |
254 | command[5] = mask_byte; |
255 | ||
b7b1e655 DD |
256 | /* |
257 | * If ALQ is set in the qualifier, this field contains the address of the | |
258 | * registers where the byte count should be read for transferring the data. | |
259 | * If ALQ is not set, then this field contains the number of bytes to be | |
260 | * transferred. | |
261 | */ | |
1da177e4 LT |
262 | command[6] = subcountL; |
263 | command[7] = subcountH; | |
264 | ||
265 | return usbat_execute_command(us, command, 8); | |
266 | } | |
267 | ||
268 | /* | |
269 | * Block, waiting for an ATA device to become not busy or to report | |
270 | * an error condition. | |
271 | */ | |
272 | static int usbat_wait_not_busy(struct us_data *us, int minutes) | |
273 | { | |
274 | int i; | |
275 | int result; | |
276 | unsigned char *status = us->iobuf; | |
277 | ||
278 | /* Synchronizing cache on a CDR could take a heck of a long time, | |
279 | * but probably not more than 10 minutes or so. On the other hand, | |
280 | * doing a full blank on a CDRW at speed 1 will take about 75 | |
281 | * minutes! | |
282 | */ | |
283 | ||
284 | for (i=0; i<1200+minutes*60; i++) { | |
285 | ||
286 | result = usbat_get_status(us, status); | |
287 | ||
288 | if (result!=USB_STOR_XFER_GOOD) | |
289 | return USB_STOR_TRANSPORT_ERROR; | |
b7b1e655 | 290 | if (*status & 0x01) { /* check condition */ |
1da177e4 LT |
291 | result = usbat_read(us, USBAT_ATA, 0x10, status); |
292 | return USB_STOR_TRANSPORT_FAILED; | |
293 | } | |
b7b1e655 | 294 | if (*status & 0x20) /* device fault */ |
1da177e4 LT |
295 | return USB_STOR_TRANSPORT_FAILED; |
296 | ||
b7b1e655 | 297 | if ((*status & 0x80)==0x00) { /* not busy */ |
1da177e4 LT |
298 | US_DEBUGP("Waited not busy for %d steps\n", i); |
299 | return USB_STOR_TRANSPORT_GOOD; | |
300 | } | |
301 | ||
302 | if (i<500) | |
b7b1e655 | 303 | msleep(10); /* 5 seconds */ |
1da177e4 | 304 | else if (i<700) |
b7b1e655 | 305 | msleep(50); /* 10 seconds */ |
1da177e4 | 306 | else if (i<1200) |
b7b1e655 | 307 | msleep(100); /* 50 seconds */ |
1da177e4 | 308 | else |
b7b1e655 | 309 | msleep(1000); /* X minutes */ |
1da177e4 LT |
310 | } |
311 | ||
312 | US_DEBUGP("Waited not busy for %d minutes, timing out.\n", | |
313 | minutes); | |
314 | return USB_STOR_TRANSPORT_FAILED; | |
315 | } | |
316 | ||
317 | /* | |
318 | * Read block data from the data register | |
319 | */ | |
320 | static int usbat_read_block(struct us_data *us, | |
321 | unsigned char *content, | |
141804d4 PC |
322 | unsigned short len, |
323 | int use_sg) | |
1da177e4 LT |
324 | { |
325 | int result; | |
326 | unsigned char *command = us->iobuf; | |
327 | ||
328 | if (!len) | |
329 | return USB_STOR_TRANSPORT_GOOD; | |
330 | ||
331 | command[0] = 0xC0; | |
332 | command[1] = USBAT_ATA | USBAT_CMD_READ_BLOCK; | |
333 | command[2] = USBAT_ATA_DATA; | |
334 | command[3] = 0; | |
335 | command[4] = 0; | |
336 | command[5] = 0; | |
337 | command[6] = LSB_of(len); | |
338 | command[7] = MSB_of(len); | |
339 | ||
340 | result = usbat_execute_command(us, command, 8); | |
341 | if (result != USB_STOR_XFER_GOOD) | |
342 | return USB_STOR_TRANSPORT_ERROR; | |
343 | ||
141804d4 | 344 | result = usbat_bulk_read(us, content, len, use_sg); |
1da177e4 LT |
345 | return (result == USB_STOR_XFER_GOOD ? |
346 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); | |
347 | } | |
348 | ||
349 | /* | |
350 | * Write block data via the data register | |
351 | */ | |
352 | static int usbat_write_block(struct us_data *us, | |
353 | unsigned char access, | |
354 | unsigned char *content, | |
355 | unsigned short len, | |
141804d4 PC |
356 | int minutes, |
357 | int use_sg) | |
1da177e4 LT |
358 | { |
359 | int result; | |
360 | unsigned char *command = us->iobuf; | |
361 | ||
362 | if (!len) | |
363 | return USB_STOR_TRANSPORT_GOOD; | |
364 | ||
365 | command[0] = 0x40; | |
366 | command[1] = access | USBAT_CMD_WRITE_BLOCK; | |
367 | command[2] = USBAT_ATA_DATA; | |
368 | command[3] = 0; | |
369 | command[4] = 0; | |
370 | command[5] = 0; | |
371 | command[6] = LSB_of(len); | |
372 | command[7] = MSB_of(len); | |
373 | ||
374 | result = usbat_execute_command(us, command, 8); | |
375 | ||
376 | if (result != USB_STOR_XFER_GOOD) | |
377 | return USB_STOR_TRANSPORT_ERROR; | |
378 | ||
141804d4 | 379 | result = usbat_bulk_write(us, content, len, use_sg); |
1da177e4 LT |
380 | if (result != USB_STOR_XFER_GOOD) |
381 | return USB_STOR_TRANSPORT_ERROR; | |
382 | ||
383 | return usbat_wait_not_busy(us, minutes); | |
384 | } | |
385 | ||
386 | /* | |
387 | * Process read and write requests | |
388 | */ | |
389 | static int usbat_hp8200e_rw_block_test(struct us_data *us, | |
390 | unsigned char access, | |
391 | unsigned char *registers, | |
392 | unsigned char *data_out, | |
393 | unsigned short num_registers, | |
394 | unsigned char data_reg, | |
395 | unsigned char status_reg, | |
396 | unsigned char timeout, | |
397 | unsigned char qualifier, | |
398 | int direction, | |
399 | unsigned char *content, | |
400 | unsigned short len, | |
401 | int use_sg, | |
402 | int minutes) | |
403 | { | |
404 | int result; | |
405 | unsigned int pipe = (direction == DMA_FROM_DEVICE) ? | |
406 | us->recv_bulk_pipe : us->send_bulk_pipe; | |
407 | ||
408 | unsigned char *command = us->iobuf; | |
409 | int i, j; | |
410 | int cmdlen; | |
411 | unsigned char *data = us->iobuf; | |
412 | unsigned char *status = us->iobuf; | |
413 | ||
414 | BUG_ON(num_registers > US_IOBUF_SIZE/2); | |
415 | ||
416 | for (i=0; i<20; i++) { | |
417 | ||
418 | /* | |
419 | * The first time we send the full command, which consists | |
420 | * of downloading the SCSI command followed by downloading | |
421 | * the data via a write-and-test. Any other time we only | |
422 | * send the command to download the data -- the SCSI command | |
423 | * is still 'active' in some sense in the device. | |
424 | * | |
425 | * We're only going to try sending the data 10 times. After | |
426 | * that, we just return a failure. | |
427 | */ | |
428 | ||
429 | if (i==0) { | |
430 | cmdlen = 16; | |
b7b1e655 DD |
431 | /* |
432 | * Write to multiple registers | |
433 | * Not really sure the 0x07, 0x17, 0xfc, 0xe7 is | |
434 | * necessary here, but that's what came out of the | |
435 | * trace every single time. | |
436 | */ | |
1da177e4 LT |
437 | command[0] = 0x40; |
438 | command[1] = access | USBAT_CMD_WRITE_REGS; | |
439 | command[2] = 0x07; | |
440 | command[3] = 0x17; | |
441 | command[4] = 0xFC; | |
442 | command[5] = 0xE7; | |
443 | command[6] = LSB_of(num_registers*2); | |
444 | command[7] = MSB_of(num_registers*2); | |
445 | } else | |
446 | cmdlen = 8; | |
447 | ||
b7b1e655 | 448 | /* Conditionally read or write blocks */ |
1da177e4 LT |
449 | command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0); |
450 | command[cmdlen-7] = access | | |
451 | (direction==DMA_TO_DEVICE ? | |
452 | USBAT_CMD_COND_WRITE_BLOCK : USBAT_CMD_COND_READ_BLOCK); | |
453 | command[cmdlen-6] = data_reg; | |
454 | command[cmdlen-5] = status_reg; | |
455 | command[cmdlen-4] = timeout; | |
456 | command[cmdlen-3] = qualifier; | |
457 | command[cmdlen-2] = LSB_of(len); | |
458 | command[cmdlen-1] = MSB_of(len); | |
459 | ||
460 | result = usbat_execute_command(us, command, cmdlen); | |
461 | ||
462 | if (result != USB_STOR_XFER_GOOD) | |
463 | return USB_STOR_TRANSPORT_ERROR; | |
464 | ||
465 | if (i==0) { | |
466 | ||
467 | for (j=0; j<num_registers; j++) { | |
468 | data[j<<1] = registers[j]; | |
469 | data[1+(j<<1)] = data_out[j]; | |
470 | } | |
471 | ||
141804d4 | 472 | result = usbat_bulk_write(us, data, num_registers*2, 0); |
1da177e4 LT |
473 | if (result != USB_STOR_XFER_GOOD) |
474 | return USB_STOR_TRANSPORT_ERROR; | |
475 | ||
476 | } | |
477 | ||
1da177e4 LT |
478 | result = usb_stor_bulk_transfer_sg(us, |
479 | pipe, content, len, use_sg, NULL); | |
480 | ||
481 | /* | |
482 | * If we get a stall on the bulk download, we'll retry | |
483 | * the bulk download -- but not the SCSI command because | |
484 | * in some sense the SCSI command is still 'active' and | |
485 | * waiting for the data. Don't ask me why this should be; | |
486 | * I'm only following what the Windoze driver did. | |
487 | * | |
488 | * Note that a stall for the test-and-read/write command means | |
489 | * that the test failed. In this case we're testing to make | |
490 | * sure that the device is error-free | |
491 | * (i.e. bit 0 -- CHK -- of status is 0). The most likely | |
492 | * hypothesis is that the USBAT chip somehow knows what | |
493 | * the device will accept, but doesn't give the device any | |
494 | * data until all data is received. Thus, the device would | |
495 | * still be waiting for the first byte of data if a stall | |
496 | * occurs, even if the stall implies that some data was | |
497 | * transferred. | |
498 | */ | |
499 | ||
500 | if (result == USB_STOR_XFER_SHORT || | |
501 | result == USB_STOR_XFER_STALLED) { | |
502 | ||
503 | /* | |
504 | * If we're reading and we stalled, then clear | |
505 | * the bulk output pipe only the first time. | |
506 | */ | |
507 | ||
508 | if (direction==DMA_FROM_DEVICE && i==0) { | |
509 | if (usb_stor_clear_halt(us, | |
510 | us->send_bulk_pipe) < 0) | |
511 | return USB_STOR_TRANSPORT_ERROR; | |
512 | } | |
513 | ||
514 | /* | |
515 | * Read status: is the device angry, or just busy? | |
516 | */ | |
517 | ||
518 | result = usbat_read(us, USBAT_ATA, | |
519 | direction==DMA_TO_DEVICE ? | |
520 | USBAT_ATA_STATUS : USBAT_ATA_ALTSTATUS, | |
521 | status); | |
522 | ||
523 | if (result!=USB_STOR_XFER_GOOD) | |
524 | return USB_STOR_TRANSPORT_ERROR; | |
b7b1e655 | 525 | if (*status & 0x01) /* check condition */ |
1da177e4 | 526 | return USB_STOR_TRANSPORT_FAILED; |
b7b1e655 | 527 | if (*status & 0x20) /* device fault */ |
1da177e4 LT |
528 | return USB_STOR_TRANSPORT_FAILED; |
529 | ||
530 | US_DEBUGP("Redoing %s\n", | |
531 | direction==DMA_TO_DEVICE ? "write" : "read"); | |
532 | ||
533 | } else if (result != USB_STOR_XFER_GOOD) | |
534 | return USB_STOR_TRANSPORT_ERROR; | |
535 | else | |
536 | return usbat_wait_not_busy(us, minutes); | |
537 | ||
538 | } | |
539 | ||
540 | US_DEBUGP("Bummer! %s bulk data 20 times failed.\n", | |
541 | direction==DMA_TO_DEVICE ? "Writing" : "Reading"); | |
542 | ||
543 | return USB_STOR_TRANSPORT_FAILED; | |
544 | } | |
545 | ||
546 | /* | |
547 | * Write to multiple registers: | |
548 | * Allows us to write specific data to any registers. The data to be written | |
549 | * gets packed in this sequence: reg0, data0, reg1, data1, ..., regN, dataN | |
550 | * which gets sent through bulk out. | |
551 | * Not designed for large transfers of data! | |
552 | */ | |
553 | static int usbat_multiple_write(struct us_data *us, | |
554 | unsigned char *registers, | |
555 | unsigned char *data_out, | |
556 | unsigned short num_registers) | |
557 | { | |
558 | int i, result; | |
559 | unsigned char *data = us->iobuf; | |
560 | unsigned char *command = us->iobuf; | |
561 | ||
562 | BUG_ON(num_registers > US_IOBUF_SIZE/2); | |
563 | ||
b7b1e655 | 564 | /* Write to multiple registers, ATA access */ |
1da177e4 LT |
565 | command[0] = 0x40; |
566 | command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS; | |
567 | ||
b7b1e655 | 568 | /* No relevance */ |
1da177e4 LT |
569 | command[2] = 0; |
570 | command[3] = 0; | |
571 | command[4] = 0; | |
572 | command[5] = 0; | |
573 | ||
b7b1e655 | 574 | /* Number of bytes to be transferred (incl. addresses and data) */ |
1da177e4 LT |
575 | command[6] = LSB_of(num_registers*2); |
576 | command[7] = MSB_of(num_registers*2); | |
577 | ||
b7b1e655 | 578 | /* The setup command */ |
1da177e4 LT |
579 | result = usbat_execute_command(us, command, 8); |
580 | if (result != USB_STOR_XFER_GOOD) | |
581 | return USB_STOR_TRANSPORT_ERROR; | |
582 | ||
b7b1e655 | 583 | /* Create the reg/data, reg/data sequence */ |
1da177e4 LT |
584 | for (i=0; i<num_registers; i++) { |
585 | data[i<<1] = registers[i]; | |
586 | data[1+(i<<1)] = data_out[i]; | |
587 | } | |
588 | ||
b7b1e655 | 589 | /* Send the data */ |
141804d4 | 590 | result = usbat_bulk_write(us, data, num_registers*2, 0); |
1da177e4 LT |
591 | if (result != USB_STOR_XFER_GOOD) |
592 | return USB_STOR_TRANSPORT_ERROR; | |
593 | ||
594 | if (usbat_get_device_type(us) == USBAT_DEV_HP8200) | |
595 | return usbat_wait_not_busy(us, 0); | |
596 | else | |
597 | return USB_STOR_TRANSPORT_GOOD; | |
598 | } | |
599 | ||
600 | /* | |
601 | * Conditionally read blocks from device: | |
602 | * Allows us to read blocks from a specific data register, based upon the | |
603 | * condition that a status register can be successfully masked with a status | |
604 | * qualifier. If this condition is not initially met, the read will wait | |
605 | * up until a maximum amount of time has elapsed, as specified by timeout. | |
606 | * The read will start when the condition is met, otherwise the command aborts. | |
607 | * | |
608 | * The qualifier defined here is not the value that is masked, it defines | |
609 | * conditions for the write to take place. The actual masked qualifier (and | |
610 | * other related details) are defined beforehand with _set_shuttle_features(). | |
611 | */ | |
612 | static int usbat_read_blocks(struct us_data *us, | |
141804d4 PC |
613 | unsigned char *buffer, |
614 | int len, | |
615 | int use_sg) | |
1da177e4 LT |
616 | { |
617 | int result; | |
618 | unsigned char *command = us->iobuf; | |
619 | ||
620 | command[0] = 0xC0; | |
621 | command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK; | |
622 | command[2] = USBAT_ATA_DATA; | |
623 | command[3] = USBAT_ATA_STATUS; | |
b7b1e655 | 624 | command[4] = 0xFD; /* Timeout (ms); */ |
1da177e4 LT |
625 | command[5] = USBAT_QUAL_FCQ; |
626 | command[6] = LSB_of(len); | |
627 | command[7] = MSB_of(len); | |
628 | ||
b7b1e655 | 629 | /* Multiple block read setup command */ |
1da177e4 LT |
630 | result = usbat_execute_command(us, command, 8); |
631 | if (result != USB_STOR_XFER_GOOD) | |
632 | return USB_STOR_TRANSPORT_FAILED; | |
633 | ||
b7b1e655 | 634 | /* Read the blocks we just asked for */ |
141804d4 | 635 | result = usbat_bulk_read(us, buffer, len, use_sg); |
1da177e4 LT |
636 | if (result != USB_STOR_XFER_GOOD) |
637 | return USB_STOR_TRANSPORT_FAILED; | |
638 | ||
639 | return USB_STOR_TRANSPORT_GOOD; | |
640 | } | |
641 | ||
642 | /* | |
643 | * Conditionally write blocks to device: | |
644 | * Allows us to write blocks to a specific data register, based upon the | |
645 | * condition that a status register can be successfully masked with a status | |
646 | * qualifier. If this condition is not initially met, the write will wait | |
647 | * up until a maximum amount of time has elapsed, as specified by timeout. | |
648 | * The read will start when the condition is met, otherwise the command aborts. | |
649 | * | |
650 | * The qualifier defined here is not the value that is masked, it defines | |
651 | * conditions for the write to take place. The actual masked qualifier (and | |
652 | * other related details) are defined beforehand with _set_shuttle_features(). | |
653 | */ | |
654 | static int usbat_write_blocks(struct us_data *us, | |
655 | unsigned char *buffer, | |
141804d4 PC |
656 | int len, |
657 | int use_sg) | |
1da177e4 LT |
658 | { |
659 | int result; | |
660 | unsigned char *command = us->iobuf; | |
661 | ||
662 | command[0] = 0x40; | |
663 | command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK; | |
664 | command[2] = USBAT_ATA_DATA; | |
665 | command[3] = USBAT_ATA_STATUS; | |
b7b1e655 | 666 | command[4] = 0xFD; /* Timeout (ms) */ |
1da177e4 LT |
667 | command[5] = USBAT_QUAL_FCQ; |
668 | command[6] = LSB_of(len); | |
669 | command[7] = MSB_of(len); | |
670 | ||
b7b1e655 | 671 | /* Multiple block write setup command */ |
1da177e4 LT |
672 | result = usbat_execute_command(us, command, 8); |
673 | if (result != USB_STOR_XFER_GOOD) | |
674 | return USB_STOR_TRANSPORT_FAILED; | |
675 | ||
b7b1e655 | 676 | /* Write the data */ |
141804d4 | 677 | result = usbat_bulk_write(us, buffer, len, use_sg); |
1da177e4 LT |
678 | if (result != USB_STOR_XFER_GOOD) |
679 | return USB_STOR_TRANSPORT_FAILED; | |
680 | ||
681 | return USB_STOR_TRANSPORT_GOOD; | |
682 | } | |
683 | ||
684 | /* | |
685 | * Read the User IO register | |
686 | */ | |
687 | static int usbat_read_user_io(struct us_data *us, unsigned char *data_flags) | |
688 | { | |
689 | int result; | |
690 | ||
691 | result = usb_stor_ctrl_transfer(us, | |
692 | us->recv_ctrl_pipe, | |
693 | USBAT_CMD_UIO, | |
694 | 0xC0, | |
695 | 0, | |
696 | 0, | |
697 | data_flags, | |
698 | USBAT_UIO_READ); | |
699 | ||
700 | US_DEBUGP("usbat_read_user_io: UIO register reads %02X\n", (unsigned short) (*data_flags)); | |
701 | ||
702 | return result; | |
703 | } | |
704 | ||
705 | /* | |
706 | * Write to the User IO register | |
707 | */ | |
708 | static int usbat_write_user_io(struct us_data *us, | |
709 | unsigned char enable_flags, | |
710 | unsigned char data_flags) | |
711 | { | |
712 | return usb_stor_ctrl_transfer(us, | |
713 | us->send_ctrl_pipe, | |
714 | USBAT_CMD_UIO, | |
715 | 0x40, | |
716 | short_pack(enable_flags, data_flags), | |
717 | 0, | |
718 | NULL, | |
719 | USBAT_UIO_WRITE); | |
720 | } | |
721 | ||
722 | /* | |
723 | * Reset the device | |
724 | * Often needed on media change. | |
725 | */ | |
726 | static int usbat_device_reset(struct us_data *us) | |
727 | { | |
728 | int rc; | |
729 | ||
b7b1e655 DD |
730 | /* |
731 | * Reset peripheral, enable peripheral control signals | |
732 | * (bring reset signal up) | |
733 | */ | |
1da177e4 LT |
734 | rc = usbat_write_user_io(us, |
735 | USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
736 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
737 | if (rc != USB_STOR_XFER_GOOD) | |
738 | return USB_STOR_TRANSPORT_ERROR; | |
739 | ||
b7b1e655 DD |
740 | /* |
741 | * Enable peripheral control signals | |
742 | * (bring reset signal down) | |
743 | */ | |
1da177e4 LT |
744 | rc = usbat_write_user_io(us, |
745 | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
746 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
747 | if (rc != USB_STOR_XFER_GOOD) | |
748 | return USB_STOR_TRANSPORT_ERROR; | |
749 | ||
750 | return USB_STOR_TRANSPORT_GOOD; | |
751 | } | |
752 | ||
753 | /* | |
754 | * Enable card detect | |
755 | */ | |
756 | static int usbat_device_enable_cdt(struct us_data *us) | |
757 | { | |
758 | int rc; | |
759 | ||
b7b1e655 | 760 | /* Enable peripheral control signals and card detect */ |
1da177e4 LT |
761 | rc = usbat_write_user_io(us, |
762 | USBAT_UIO_ACKD | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
763 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
764 | if (rc != USB_STOR_XFER_GOOD) | |
765 | return USB_STOR_TRANSPORT_ERROR; | |
766 | ||
767 | return USB_STOR_TRANSPORT_GOOD; | |
768 | } | |
769 | ||
770 | /* | |
771 | * Determine if media is present. | |
772 | */ | |
773 | static int usbat_flash_check_media_present(unsigned char *uio) | |
774 | { | |
775 | if (*uio & USBAT_UIO_UI0) { | |
776 | US_DEBUGP("usbat_flash_check_media_present: no media detected\n"); | |
777 | return USBAT_FLASH_MEDIA_NONE; | |
778 | } | |
779 | ||
780 | return USBAT_FLASH_MEDIA_CF; | |
781 | } | |
782 | ||
783 | /* | |
784 | * Determine if media has changed since last operation | |
785 | */ | |
786 | static int usbat_flash_check_media_changed(unsigned char *uio) | |
787 | { | |
788 | if (*uio & USBAT_UIO_0) { | |
789 | US_DEBUGP("usbat_flash_check_media_changed: media change detected\n"); | |
790 | return USBAT_FLASH_MEDIA_CHANGED; | |
791 | } | |
792 | ||
793 | return USBAT_FLASH_MEDIA_SAME; | |
794 | } | |
795 | ||
796 | /* | |
797 | * Check for media change / no media and handle the situation appropriately | |
798 | */ | |
799 | static int usbat_flash_check_media(struct us_data *us, | |
800 | struct usbat_info *info) | |
801 | { | |
802 | int rc; | |
803 | unsigned char *uio = us->iobuf; | |
804 | ||
805 | rc = usbat_read_user_io(us, uio); | |
806 | if (rc != USB_STOR_XFER_GOOD) | |
807 | return USB_STOR_TRANSPORT_ERROR; | |
808 | ||
b7b1e655 | 809 | /* Check for media existence */ |
1da177e4 LT |
810 | rc = usbat_flash_check_media_present(uio); |
811 | if (rc == USBAT_FLASH_MEDIA_NONE) { | |
812 | info->sense_key = 0x02; | |
813 | info->sense_asc = 0x3A; | |
814 | info->sense_ascq = 0x00; | |
815 | return USB_STOR_TRANSPORT_FAILED; | |
816 | } | |
817 | ||
b7b1e655 | 818 | /* Check for media change */ |
1da177e4 LT |
819 | rc = usbat_flash_check_media_changed(uio); |
820 | if (rc == USBAT_FLASH_MEDIA_CHANGED) { | |
821 | ||
b7b1e655 | 822 | /* Reset and re-enable card detect */ |
1da177e4 LT |
823 | rc = usbat_device_reset(us); |
824 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
825 | return rc; | |
826 | rc = usbat_device_enable_cdt(us); | |
827 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
828 | return rc; | |
829 | ||
830 | msleep(50); | |
831 | ||
832 | rc = usbat_read_user_io(us, uio); | |
833 | if (rc != USB_STOR_XFER_GOOD) | |
834 | return USB_STOR_TRANSPORT_ERROR; | |
835 | ||
836 | info->sense_key = UNIT_ATTENTION; | |
837 | info->sense_asc = 0x28; | |
838 | info->sense_ascq = 0x00; | |
839 | return USB_STOR_TRANSPORT_FAILED; | |
840 | } | |
841 | ||
842 | return USB_STOR_TRANSPORT_GOOD; | |
843 | } | |
844 | ||
845 | /* | |
846 | * Determine whether we are controlling a flash-based reader/writer, | |
847 | * or a HP8200-based CD drive. | |
848 | * Sets transport functions as appropriate. | |
849 | */ | |
850 | static int usbat_identify_device(struct us_data *us, | |
851 | struct usbat_info *info) | |
852 | { | |
853 | int rc; | |
854 | unsigned char status; | |
855 | ||
856 | if (!us || !info) | |
857 | return USB_STOR_TRANSPORT_ERROR; | |
858 | ||
859 | rc = usbat_device_reset(us); | |
860 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
861 | return rc; | |
8845add3 | 862 | msleep(500); |
1da177e4 LT |
863 | |
864 | /* | |
68a6457e DD |
865 | * In attempt to distinguish between HP CDRW's and Flash readers, we now |
866 | * execute the IDENTIFY PACKET DEVICE command. On ATA devices (i.e. flash | |
867 | * readers), this command should fail with error. On ATAPI devices (i.e. | |
868 | * CDROM drives), it should succeed. | |
1da177e4 | 869 | */ |
68a6457e DD |
870 | rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1); |
871 | if (rc != USB_STOR_XFER_GOOD) | |
872 | return USB_STOR_TRANSPORT_ERROR; | |
1da177e4 | 873 | |
68a6457e DD |
874 | rc = usbat_get_status(us, &status); |
875 | if (rc != USB_STOR_XFER_GOOD) | |
876 | return USB_STOR_TRANSPORT_ERROR; | |
1da177e4 | 877 | |
b7b1e655 | 878 | /* Check for error bit, or if the command 'fell through' */ |
a8798533 | 879 | if (status == 0xA1 || !(status & 0x01)) { |
b7b1e655 | 880 | /* Device is HP 8200 */ |
1da177e4 LT |
881 | US_DEBUGP("usbat_identify_device: Detected HP8200 CDRW\n"); |
882 | info->devicetype = USBAT_DEV_HP8200; | |
a8798533 | 883 | } else { |
b7b1e655 | 884 | /* Device is a CompactFlash reader/writer */ |
a8798533 DD |
885 | US_DEBUGP("usbat_identify_device: Detected Flash reader/writer\n"); |
886 | info->devicetype = USBAT_DEV_FLASH; | |
1da177e4 LT |
887 | } |
888 | ||
889 | return USB_STOR_TRANSPORT_GOOD; | |
890 | } | |
891 | ||
892 | /* | |
893 | * Set the transport function based on the device type | |
894 | */ | |
895 | static int usbat_set_transport(struct us_data *us, | |
bdcfd9e3 PC |
896 | struct usbat_info *info, |
897 | int devicetype) | |
1da177e4 | 898 | { |
1da177e4 | 899 | |
bdcfd9e3 PC |
900 | if (!info->devicetype) |
901 | info->devicetype = devicetype; | |
1da177e4 | 902 | |
bdcfd9e3 PC |
903 | if (!info->devicetype) |
904 | usbat_identify_device(us, info); | |
905 | ||
906 | switch (info->devicetype) { | |
907 | default: | |
908 | return USB_STOR_TRANSPORT_ERROR; | |
909 | ||
910 | case USBAT_DEV_HP8200: | |
1da177e4 | 911 | us->transport = usbat_hp8200e_transport; |
bdcfd9e3 PC |
912 | break; |
913 | ||
914 | case USBAT_DEV_FLASH: | |
1da177e4 | 915 | us->transport = usbat_flash_transport; |
bdcfd9e3 PC |
916 | break; |
917 | } | |
1da177e4 LT |
918 | |
919 | return 0; | |
920 | } | |
921 | ||
922 | /* | |
923 | * Read the media capacity | |
924 | */ | |
925 | static int usbat_flash_get_sector_count(struct us_data *us, | |
926 | struct usbat_info *info) | |
927 | { | |
928 | unsigned char registers[3] = { | |
929 | USBAT_ATA_SECCNT, | |
930 | USBAT_ATA_DEVICE, | |
931 | USBAT_ATA_CMD, | |
932 | }; | |
933 | unsigned char command[3] = { 0x01, 0xA0, 0xEC }; | |
934 | unsigned char *reply; | |
935 | unsigned char status; | |
936 | int rc; | |
937 | ||
938 | if (!us || !info) | |
939 | return USB_STOR_TRANSPORT_ERROR; | |
940 | ||
941 | reply = kmalloc(512, GFP_NOIO); | |
942 | if (!reply) | |
943 | return USB_STOR_TRANSPORT_ERROR; | |
944 | ||
b7b1e655 | 945 | /* ATA command : IDENTIFY DEVICE */ |
1da177e4 LT |
946 | rc = usbat_multiple_write(us, registers, command, 3); |
947 | if (rc != USB_STOR_XFER_GOOD) { | |
948 | US_DEBUGP("usbat_flash_get_sector_count: Gah! identify_device failed\n"); | |
949 | rc = USB_STOR_TRANSPORT_ERROR; | |
950 | goto leave; | |
951 | } | |
952 | ||
b7b1e655 | 953 | /* Read device status */ |
1da177e4 LT |
954 | if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) { |
955 | rc = USB_STOR_TRANSPORT_ERROR; | |
956 | goto leave; | |
957 | } | |
958 | ||
959 | msleep(100); | |
960 | ||
b7b1e655 | 961 | /* Read the device identification data */ |
141804d4 | 962 | rc = usbat_read_block(us, reply, 512, 0); |
1da177e4 LT |
963 | if (rc != USB_STOR_TRANSPORT_GOOD) |
964 | goto leave; | |
965 | ||
966 | info->sectors = ((u32)(reply[117]) << 24) | | |
967 | ((u32)(reply[116]) << 16) | | |
968 | ((u32)(reply[115]) << 8) | | |
969 | ((u32)(reply[114]) ); | |
970 | ||
971 | rc = USB_STOR_TRANSPORT_GOOD; | |
972 | ||
973 | leave: | |
974 | kfree(reply); | |
975 | return rc; | |
976 | } | |
977 | ||
978 | /* | |
979 | * Read data from device | |
980 | */ | |
981 | static int usbat_flash_read_data(struct us_data *us, | |
982 | struct usbat_info *info, | |
983 | u32 sector, | |
984 | u32 sectors) | |
985 | { | |
986 | unsigned char registers[7] = { | |
987 | USBAT_ATA_FEATURES, | |
988 | USBAT_ATA_SECCNT, | |
989 | USBAT_ATA_SECNUM, | |
990 | USBAT_ATA_LBA_ME, | |
991 | USBAT_ATA_LBA_HI, | |
992 | USBAT_ATA_DEVICE, | |
993 | USBAT_ATA_STATUS, | |
994 | }; | |
995 | unsigned char command[7]; | |
996 | unsigned char *buffer; | |
997 | unsigned char thistime; | |
998 | unsigned int totallen, alloclen; | |
999 | int len, result; | |
1000 | unsigned int sg_idx = 0, sg_offset = 0; | |
1001 | ||
1002 | result = usbat_flash_check_media(us, info); | |
1003 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1004 | return result; | |
1005 | ||
b7b1e655 DD |
1006 | /* |
1007 | * we're working in LBA mode. according to the ATA spec, | |
1008 | * we can support up to 28-bit addressing. I don't know if Jumpshot | |
1009 | * supports beyond 24-bit addressing. It's kind of hard to test | |
1010 | * since it requires > 8GB CF card. | |
1011 | */ | |
1da177e4 LT |
1012 | |
1013 | if (sector > 0x0FFFFFFF) | |
1014 | return USB_STOR_TRANSPORT_ERROR; | |
1015 | ||
1016 | totallen = sectors * info->ssize; | |
1017 | ||
b7b1e655 DD |
1018 | /* |
1019 | * Since we don't read more than 64 KB at a time, we have to create | |
1020 | * a bounce buffer and move the data a piece at a time between the | |
1021 | * bounce buffer and the actual transfer buffer. | |
1022 | */ | |
1da177e4 LT |
1023 | |
1024 | alloclen = min(totallen, 65536u); | |
1025 | buffer = kmalloc(alloclen, GFP_NOIO); | |
1026 | if (buffer == NULL) | |
1027 | return USB_STOR_TRANSPORT_ERROR; | |
1028 | ||
1029 | do { | |
b7b1e655 DD |
1030 | /* |
1031 | * loop, never allocate or transfer more than 64k at once | |
1032 | * (min(128k, 255*info->ssize) is the real limit) | |
1033 | */ | |
1da177e4 LT |
1034 | len = min(totallen, alloclen); |
1035 | thistime = (len / info->ssize) & 0xff; | |
1036 | ||
b7b1e655 DD |
1037 | /* ATA command 0x20 (READ SECTORS) */ |
1038 | usbat_pack_ata_sector_cmd(command, thistime, sector, 0x20); | |
1da177e4 | 1039 | |
b7b1e655 | 1040 | /* Write/execute ATA read command */ |
1da177e4 LT |
1041 | result = usbat_multiple_write(us, registers, command, 7); |
1042 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1043 | goto leave; | |
1044 | ||
b7b1e655 | 1045 | /* Read the data we just requested */ |
141804d4 | 1046 | result = usbat_read_blocks(us, buffer, len, 0); |
1da177e4 LT |
1047 | if (result != USB_STOR_TRANSPORT_GOOD) |
1048 | goto leave; | |
1049 | ||
1050 | US_DEBUGP("usbat_flash_read_data: %d bytes\n", len); | |
1051 | ||
b7b1e655 | 1052 | /* Store the data in the transfer buffer */ |
1da177e4 LT |
1053 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
1054 | &sg_idx, &sg_offset, TO_XFER_BUF); | |
1055 | ||
1056 | sector += thistime; | |
1057 | totallen -= len; | |
1058 | } while (totallen > 0); | |
1059 | ||
1060 | kfree(buffer); | |
1061 | return USB_STOR_TRANSPORT_GOOD; | |
1062 | ||
1063 | leave: | |
1064 | kfree(buffer); | |
1065 | return USB_STOR_TRANSPORT_ERROR; | |
1066 | } | |
1067 | ||
1068 | /* | |
1069 | * Write data to device | |
1070 | */ | |
1071 | static int usbat_flash_write_data(struct us_data *us, | |
1072 | struct usbat_info *info, | |
1073 | u32 sector, | |
1074 | u32 sectors) | |
1075 | { | |
1076 | unsigned char registers[7] = { | |
1077 | USBAT_ATA_FEATURES, | |
1078 | USBAT_ATA_SECCNT, | |
1079 | USBAT_ATA_SECNUM, | |
1080 | USBAT_ATA_LBA_ME, | |
1081 | USBAT_ATA_LBA_HI, | |
1082 | USBAT_ATA_DEVICE, | |
1083 | USBAT_ATA_STATUS, | |
1084 | }; | |
1085 | unsigned char command[7]; | |
1086 | unsigned char *buffer; | |
1087 | unsigned char thistime; | |
1088 | unsigned int totallen, alloclen; | |
1089 | int len, result; | |
1090 | unsigned int sg_idx = 0, sg_offset = 0; | |
1091 | ||
1092 | result = usbat_flash_check_media(us, info); | |
1093 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1094 | return result; | |
1095 | ||
b7b1e655 DD |
1096 | /* |
1097 | * we're working in LBA mode. according to the ATA spec, | |
1098 | * we can support up to 28-bit addressing. I don't know if the device | |
1099 | * supports beyond 24-bit addressing. It's kind of hard to test | |
1100 | * since it requires > 8GB media. | |
1101 | */ | |
1da177e4 LT |
1102 | |
1103 | if (sector > 0x0FFFFFFF) | |
1104 | return USB_STOR_TRANSPORT_ERROR; | |
1105 | ||
1106 | totallen = sectors * info->ssize; | |
1107 | ||
b7b1e655 DD |
1108 | /* |
1109 | * Since we don't write more than 64 KB at a time, we have to create | |
1110 | * a bounce buffer and move the data a piece at a time between the | |
1111 | * bounce buffer and the actual transfer buffer. | |
1112 | */ | |
1da177e4 LT |
1113 | |
1114 | alloclen = min(totallen, 65536u); | |
1115 | buffer = kmalloc(alloclen, GFP_NOIO); | |
1116 | if (buffer == NULL) | |
1117 | return USB_STOR_TRANSPORT_ERROR; | |
1118 | ||
1119 | do { | |
b7b1e655 DD |
1120 | /* |
1121 | * loop, never allocate or transfer more than 64k at once | |
1122 | * (min(128k, 255*info->ssize) is the real limit) | |
1123 | */ | |
1da177e4 LT |
1124 | len = min(totallen, alloclen); |
1125 | thistime = (len / info->ssize) & 0xff; | |
1126 | ||
b7b1e655 | 1127 | /* Get the data from the transfer buffer */ |
1da177e4 LT |
1128 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
1129 | &sg_idx, &sg_offset, FROM_XFER_BUF); | |
1130 | ||
b7b1e655 DD |
1131 | /* ATA command 0x30 (WRITE SECTORS) */ |
1132 | usbat_pack_ata_sector_cmd(command, thistime, sector, 0x30); | |
1da177e4 | 1133 | |
b7b1e655 | 1134 | /* Write/execute ATA write command */ |
1da177e4 LT |
1135 | result = usbat_multiple_write(us, registers, command, 7); |
1136 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1137 | goto leave; | |
1138 | ||
b7b1e655 | 1139 | /* Write the data */ |
141804d4 | 1140 | result = usbat_write_blocks(us, buffer, len, 0); |
1da177e4 LT |
1141 | if (result != USB_STOR_TRANSPORT_GOOD) |
1142 | goto leave; | |
1143 | ||
1144 | sector += thistime; | |
1145 | totallen -= len; | |
1146 | } while (totallen > 0); | |
1147 | ||
1148 | kfree(buffer); | |
1149 | return result; | |
1150 | ||
1151 | leave: | |
1152 | kfree(buffer); | |
1153 | return USB_STOR_TRANSPORT_ERROR; | |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * Squeeze a potentially huge (> 65535 byte) read10 command into | |
1158 | * a little ( <= 65535 byte) ATAPI pipe | |
1159 | */ | |
1160 | static int usbat_hp8200e_handle_read10(struct us_data *us, | |
1161 | unsigned char *registers, | |
1162 | unsigned char *data, | |
1163 | struct scsi_cmnd *srb) | |
1164 | { | |
1165 | int result = USB_STOR_TRANSPORT_GOOD; | |
1166 | unsigned char *buffer; | |
1167 | unsigned int len; | |
1168 | unsigned int sector; | |
1169 | unsigned int sg_segment = 0; | |
1170 | unsigned int sg_offset = 0; | |
1171 | ||
1172 | US_DEBUGP("handle_read10: transfersize %d\n", | |
1173 | srb->transfersize); | |
1174 | ||
1175 | if (srb->request_bufflen < 0x10000) { | |
1176 | ||
1177 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1178 | registers, data, 19, | |
1179 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1180 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1181 | DMA_FROM_DEVICE, | |
1182 | srb->request_buffer, | |
1183 | srb->request_bufflen, srb->use_sg, 1); | |
1184 | ||
1185 | return result; | |
1186 | } | |
1187 | ||
1188 | /* | |
1189 | * Since we're requesting more data than we can handle in | |
1190 | * a single read command (max is 64k-1), we will perform | |
1191 | * multiple reads, but each read must be in multiples of | |
1192 | * a sector. Luckily the sector size is in srb->transfersize | |
1193 | * (see linux/drivers/scsi/sr.c). | |
1194 | */ | |
1195 | ||
1196 | if (data[7+0] == GPCMD_READ_CD) { | |
1197 | len = short_pack(data[7+9], data[7+8]); | |
1198 | len <<= 16; | |
1199 | len |= data[7+7]; | |
1200 | US_DEBUGP("handle_read10: GPCMD_READ_CD: len %d\n", len); | |
1201 | srb->transfersize = srb->request_bufflen/len; | |
1202 | } | |
1203 | ||
1204 | if (!srb->transfersize) { | |
1205 | srb->transfersize = 2048; /* A guess */ | |
1206 | US_DEBUGP("handle_read10: transfersize 0, forcing %d\n", | |
1207 | srb->transfersize); | |
1208 | } | |
1209 | ||
b7b1e655 DD |
1210 | /* |
1211 | * Since we only read in one block at a time, we have to create | |
1212 | * a bounce buffer and move the data a piece at a time between the | |
1213 | * bounce buffer and the actual transfer buffer. | |
1214 | */ | |
1da177e4 LT |
1215 | |
1216 | len = (65535/srb->transfersize) * srb->transfersize; | |
1217 | US_DEBUGP("Max read is %d bytes\n", len); | |
1218 | len = min(len, srb->request_bufflen); | |
1219 | buffer = kmalloc(len, GFP_NOIO); | |
b7b1e655 | 1220 | if (buffer == NULL) /* bloody hell! */ |
1da177e4 LT |
1221 | return USB_STOR_TRANSPORT_FAILED; |
1222 | sector = short_pack(data[7+3], data[7+2]); | |
1223 | sector <<= 16; | |
1224 | sector |= short_pack(data[7+5], data[7+4]); | |
1225 | transferred = 0; | |
1226 | ||
b7b1e655 DD |
1227 | sg_segment = 0; /* for keeping track of where we are in */ |
1228 | sg_offset = 0; /* the scatter/gather list */ | |
1da177e4 LT |
1229 | |
1230 | while (transferred != srb->request_bufflen) { | |
1231 | ||
1232 | if (len > srb->request_bufflen - transferred) | |
1233 | len = srb->request_bufflen - transferred; | |
1234 | ||
b7b1e655 DD |
1235 | data[3] = len&0xFF; /* (cylL) = expected length (L) */ |
1236 | data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */ | |
1da177e4 | 1237 | |
b7b1e655 | 1238 | /* Fix up the SCSI command sector and num sectors */ |
1da177e4 | 1239 | |
b7b1e655 | 1240 | data[7+2] = MSB_of(sector>>16); /* SCSI command sector */ |
1da177e4 LT |
1241 | data[7+3] = LSB_of(sector>>16); |
1242 | data[7+4] = MSB_of(sector&0xFFFF); | |
1243 | data[7+5] = LSB_of(sector&0xFFFF); | |
1244 | if (data[7+0] == GPCMD_READ_CD) | |
1245 | data[7+6] = 0; | |
b7b1e655 DD |
1246 | data[7+7] = MSB_of(len / srb->transfersize); /* SCSI command */ |
1247 | data[7+8] = LSB_of(len / srb->transfersize); /* num sectors */ | |
1da177e4 LT |
1248 | |
1249 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1250 | registers, data, 19, | |
1251 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1252 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1253 | DMA_FROM_DEVICE, | |
1254 | buffer, | |
1255 | len, 0, 1); | |
1256 | ||
1257 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1258 | break; | |
1259 | ||
b7b1e655 | 1260 | /* Store the data in the transfer buffer */ |
1da177e4 LT |
1261 | usb_stor_access_xfer_buf(buffer, len, srb, |
1262 | &sg_segment, &sg_offset, TO_XFER_BUF); | |
1263 | ||
b7b1e655 | 1264 | /* Update the amount transferred and the sector number */ |
1da177e4 LT |
1265 | |
1266 | transferred += len; | |
1267 | sector += len / srb->transfersize; | |
1268 | ||
b7b1e655 | 1269 | } /* while transferred != srb->request_bufflen */ |
1da177e4 LT |
1270 | |
1271 | kfree(buffer); | |
1272 | return result; | |
1273 | } | |
1274 | ||
1275 | static int usbat_select_and_test_registers(struct us_data *us) | |
1276 | { | |
1277 | int selector; | |
1278 | unsigned char *status = us->iobuf; | |
1da177e4 | 1279 | |
b7b1e655 | 1280 | /* try device = master, then device = slave. */ |
68a6457e DD |
1281 | for (selector = 0xA0; selector <= 0xB0; selector += 0x10) { |
1282 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) != | |
1da177e4 LT |
1283 | USB_STOR_XFER_GOOD) |
1284 | return USB_STOR_TRANSPORT_ERROR; | |
1285 | ||
1286 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status) != | |
1287 | USB_STOR_XFER_GOOD) | |
1288 | return USB_STOR_TRANSPORT_ERROR; | |
1289 | ||
1290 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_DEVICE, status) != | |
1291 | USB_STOR_XFER_GOOD) | |
1292 | return USB_STOR_TRANSPORT_ERROR; | |
1293 | ||
1294 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1295 | USB_STOR_XFER_GOOD) | |
1296 | return USB_STOR_TRANSPORT_ERROR; | |
1297 | ||
1298 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) != | |
1299 | USB_STOR_XFER_GOOD) | |
1300 | return USB_STOR_TRANSPORT_ERROR; | |
1301 | ||
1302 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) != | |
1303 | USB_STOR_XFER_GOOD) | |
1304 | return USB_STOR_TRANSPORT_ERROR; | |
1305 | ||
1306 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) != | |
1307 | USB_STOR_XFER_GOOD) | |
1308 | return USB_STOR_TRANSPORT_ERROR; | |
1309 | ||
1310 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1311 | USB_STOR_XFER_GOOD) | |
1312 | return USB_STOR_TRANSPORT_ERROR; | |
1313 | ||
1314 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1315 | USB_STOR_XFER_GOOD) | |
1316 | return USB_STOR_TRANSPORT_ERROR; | |
1317 | } | |
1318 | ||
1319 | return USB_STOR_TRANSPORT_GOOD; | |
1320 | } | |
1321 | ||
1322 | /* | |
1323 | * Initialize the USBAT processor and the storage device | |
1324 | */ | |
bdcfd9e3 | 1325 | static int init_usbat(struct us_data *us, int devicetype) |
1da177e4 LT |
1326 | { |
1327 | int rc; | |
1328 | struct usbat_info *info; | |
1329 | unsigned char subcountH = USBAT_ATA_LBA_HI; | |
1330 | unsigned char subcountL = USBAT_ATA_LBA_ME; | |
1331 | unsigned char *status = us->iobuf; | |
1332 | ||
887c2560 | 1333 | us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO); |
1da177e4 LT |
1334 | if (!us->extra) { |
1335 | US_DEBUGP("init_usbat: Gah! Can't allocate storage for usbat info struct!\n"); | |
1336 | return 1; | |
1337 | } | |
1da177e4 LT |
1338 | info = (struct usbat_info *) (us->extra); |
1339 | ||
b7b1e655 | 1340 | /* Enable peripheral control signals */ |
1da177e4 LT |
1341 | rc = usbat_write_user_io(us, |
1342 | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
1343 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
1344 | if (rc != USB_STOR_XFER_GOOD) | |
1345 | return USB_STOR_TRANSPORT_ERROR; | |
1346 | ||
1347 | US_DEBUGP("INIT 1\n"); | |
1348 | ||
1349 | msleep(2000); | |
1350 | ||
1351 | rc = usbat_read_user_io(us, status); | |
1352 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1353 | return rc; | |
1354 | ||
1355 | US_DEBUGP("INIT 2\n"); | |
1356 | ||
1357 | rc = usbat_read_user_io(us, status); | |
1358 | if (rc != USB_STOR_XFER_GOOD) | |
1359 | return USB_STOR_TRANSPORT_ERROR; | |
1360 | ||
1361 | rc = usbat_read_user_io(us, status); | |
1362 | if (rc != USB_STOR_XFER_GOOD) | |
1363 | return USB_STOR_TRANSPORT_ERROR; | |
1364 | ||
1365 | US_DEBUGP("INIT 3\n"); | |
1366 | ||
1da177e4 LT |
1367 | rc = usbat_select_and_test_registers(us); |
1368 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1369 | return rc; | |
1370 | ||
68a6457e | 1371 | US_DEBUGP("INIT 4\n"); |
1da177e4 LT |
1372 | |
1373 | rc = usbat_read_user_io(us, status); | |
1374 | if (rc != USB_STOR_XFER_GOOD) | |
1375 | return USB_STOR_TRANSPORT_ERROR; | |
1376 | ||
68a6457e | 1377 | US_DEBUGP("INIT 5\n"); |
1da177e4 | 1378 | |
b7b1e655 | 1379 | /* Enable peripheral control signals and card detect */ |
1da177e4 LT |
1380 | rc = usbat_device_enable_cdt(us); |
1381 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1382 | return rc; | |
1383 | ||
68a6457e | 1384 | US_DEBUGP("INIT 6\n"); |
1da177e4 LT |
1385 | |
1386 | rc = usbat_read_user_io(us, status); | |
1387 | if (rc != USB_STOR_XFER_GOOD) | |
1388 | return USB_STOR_TRANSPORT_ERROR; | |
1389 | ||
68a6457e | 1390 | US_DEBUGP("INIT 7\n"); |
1da177e4 LT |
1391 | |
1392 | msleep(1400); | |
1393 | ||
1394 | rc = usbat_read_user_io(us, status); | |
1395 | if (rc != USB_STOR_XFER_GOOD) | |
1396 | return USB_STOR_TRANSPORT_ERROR; | |
1397 | ||
68a6457e | 1398 | US_DEBUGP("INIT 8\n"); |
1da177e4 LT |
1399 | |
1400 | rc = usbat_select_and_test_registers(us); | |
1401 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1402 | return rc; | |
1403 | ||
68a6457e DD |
1404 | US_DEBUGP("INIT 9\n"); |
1405 | ||
b7b1e655 | 1406 | /* At this point, we need to detect which device we are using */ |
bdcfd9e3 | 1407 | if (usbat_set_transport(us, info, devicetype)) |
68a6457e DD |
1408 | return USB_STOR_TRANSPORT_ERROR; |
1409 | ||
1410 | US_DEBUGP("INIT 10\n"); | |
1da177e4 LT |
1411 | |
1412 | if (usbat_get_device_type(us) == USBAT_DEV_FLASH) { | |
1413 | subcountH = 0x02; | |
1414 | subcountL = 0x00; | |
1415 | } | |
1416 | rc = usbat_set_shuttle_features(us, (USBAT_FEAT_ETEN | USBAT_FEAT_ET2 | USBAT_FEAT_ET1), | |
1417 | 0x00, 0x88, 0x08, subcountH, subcountL); | |
1418 | if (rc != USB_STOR_XFER_GOOD) | |
1419 | return USB_STOR_TRANSPORT_ERROR; | |
1420 | ||
68a6457e | 1421 | US_DEBUGP("INIT 11\n"); |
1da177e4 LT |
1422 | |
1423 | return USB_STOR_TRANSPORT_GOOD; | |
1424 | } | |
1425 | ||
1426 | /* | |
1427 | * Transport for the HP 8200e | |
1428 | */ | |
1429 | static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us) | |
1430 | { | |
1431 | int result; | |
1432 | unsigned char *status = us->iobuf; | |
1433 | unsigned char registers[32]; | |
1434 | unsigned char data[32]; | |
1435 | unsigned int len; | |
1436 | int i; | |
1437 | char string[64]; | |
1438 | ||
1439 | len = srb->request_bufflen; | |
1440 | ||
1441 | /* Send A0 (ATA PACKET COMMAND). | |
1442 | Note: I guess we're never going to get any of the ATA | |
1443 | commands... just ATA Packet Commands. | |
1444 | */ | |
1445 | ||
1446 | registers[0] = USBAT_ATA_FEATURES; | |
1447 | registers[1] = USBAT_ATA_SECCNT; | |
1448 | registers[2] = USBAT_ATA_SECNUM; | |
1449 | registers[3] = USBAT_ATA_LBA_ME; | |
1450 | registers[4] = USBAT_ATA_LBA_HI; | |
1451 | registers[5] = USBAT_ATA_DEVICE; | |
1452 | registers[6] = USBAT_ATA_CMD; | |
1453 | data[0] = 0x00; | |
1454 | data[1] = 0x00; | |
1455 | data[2] = 0x00; | |
b7b1e655 DD |
1456 | data[3] = len&0xFF; /* (cylL) = expected length (L) */ |
1457 | data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */ | |
1458 | data[5] = 0xB0; /* (device sel) = slave */ | |
1459 | data[6] = 0xA0; /* (command) = ATA PACKET COMMAND */ | |
1da177e4 LT |
1460 | |
1461 | for (i=7; i<19; i++) { | |
1462 | registers[i] = 0x10; | |
1463 | data[i] = (i-7 >= srb->cmd_len) ? 0 : srb->cmnd[i-7]; | |
1464 | } | |
1465 | ||
1466 | result = usbat_get_status(us, status); | |
1467 | US_DEBUGP("Status = %02X\n", *status); | |
1468 | if (result != USB_STOR_XFER_GOOD) | |
1469 | return USB_STOR_TRANSPORT_ERROR; | |
1470 | if (srb->cmnd[0] == TEST_UNIT_READY) | |
1471 | transferred = 0; | |
1472 | ||
1473 | if (srb->sc_data_direction == DMA_TO_DEVICE) { | |
1474 | ||
1475 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1476 | registers, data, 19, | |
1477 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1478 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1479 | DMA_TO_DEVICE, | |
1480 | srb->request_buffer, | |
1481 | len, srb->use_sg, 10); | |
1482 | ||
1483 | if (result == USB_STOR_TRANSPORT_GOOD) { | |
1484 | transferred += len; | |
1485 | US_DEBUGP("Wrote %08X bytes\n", transferred); | |
1486 | } | |
1487 | ||
1488 | return result; | |
1489 | ||
1490 | } else if (srb->cmnd[0] == READ_10 || | |
1491 | srb->cmnd[0] == GPCMD_READ_CD) { | |
1492 | ||
1493 | return usbat_hp8200e_handle_read10(us, registers, data, srb); | |
1494 | ||
1495 | } | |
1496 | ||
1497 | if (len > 0xFFFF) { | |
1498 | US_DEBUGP("Error: len = %08X... what do I do now?\n", | |
1499 | len); | |
1500 | return USB_STOR_TRANSPORT_ERROR; | |
1501 | } | |
1502 | ||
1503 | if ( (result = usbat_multiple_write(us, | |
1504 | registers, data, 7)) != USB_STOR_TRANSPORT_GOOD) { | |
1505 | return result; | |
1506 | } | |
1507 | ||
b7b1e655 DD |
1508 | /* |
1509 | * Write the 12-byte command header. | |
1510 | * | |
1511 | * If the command is BLANK then set the timer for 75 minutes. | |
1512 | * Otherwise set it for 10 minutes. | |
1513 | * | |
1514 | * NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW | |
1515 | * AT SPEED 4 IS UNRELIABLE!!! | |
1516 | */ | |
1da177e4 | 1517 | |
141804d4 | 1518 | if ((result = usbat_write_block(us, |
1da177e4 | 1519 | USBAT_ATA, srb->cmnd, 12, |
141804d4 PC |
1520 | (srb->cmnd[0]==GPCMD_BLANK ? 75 : 10), 0) != |
1521 | USB_STOR_TRANSPORT_GOOD)) { | |
1da177e4 LT |
1522 | return result; |
1523 | } | |
1524 | ||
b7b1e655 | 1525 | /* If there is response data to be read in then do it here. */ |
1da177e4 LT |
1526 | |
1527 | if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) { | |
1528 | ||
b7b1e655 | 1529 | /* How many bytes to read in? Check cylL register */ |
1da177e4 LT |
1530 | |
1531 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1532 | USB_STOR_XFER_GOOD) { | |
1533 | return USB_STOR_TRANSPORT_ERROR; | |
1534 | } | |
1535 | ||
b7b1e655 | 1536 | if (len > 0xFF) { /* need to read cylH also */ |
1da177e4 LT |
1537 | len = *status; |
1538 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) != | |
1539 | USB_STOR_XFER_GOOD) { | |
1540 | return USB_STOR_TRANSPORT_ERROR; | |
1541 | } | |
1542 | len += ((unsigned int) *status)<<8; | |
1543 | } | |
1544 | else | |
1545 | len = *status; | |
1546 | ||
1547 | ||
141804d4 | 1548 | result = usbat_read_block(us, srb->request_buffer, len, srb->use_sg); |
1da177e4 LT |
1549 | |
1550 | /* Debug-print the first 32 bytes of the transfer */ | |
1551 | ||
1552 | if (!srb->use_sg) { | |
1553 | string[0] = 0; | |
1554 | for (i=0; i<len && i<32; i++) { | |
1555 | sprintf(string+strlen(string), "%02X ", | |
1556 | ((unsigned char *)srb->request_buffer)[i]); | |
1557 | if ((i%16)==15) { | |
1558 | US_DEBUGP("%s\n", string); | |
1559 | string[0] = 0; | |
1560 | } | |
1561 | } | |
1562 | if (string[0]!=0) | |
1563 | US_DEBUGP("%s\n", string); | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | return result; | |
1568 | } | |
1569 | ||
1570 | /* | |
1571 | * Transport for USBAT02-based CompactFlash and similar storage devices | |
1572 | */ | |
1573 | static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us) | |
1574 | { | |
1575 | int rc; | |
1576 | struct usbat_info *info = (struct usbat_info *) (us->extra); | |
1577 | unsigned long block, blocks; | |
1578 | unsigned char *ptr = us->iobuf; | |
1579 | static unsigned char inquiry_response[36] = { | |
1580 | 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00 | |
1581 | }; | |
1582 | ||
1583 | if (srb->cmnd[0] == INQUIRY) { | |
1584 | US_DEBUGP("usbat_flash_transport: INQUIRY. Returning bogus response.\n"); | |
1585 | memcpy(ptr, inquiry_response, sizeof(inquiry_response)); | |
1586 | fill_inquiry_response(us, ptr, 36); | |
1587 | return USB_STOR_TRANSPORT_GOOD; | |
1588 | } | |
1589 | ||
1590 | if (srb->cmnd[0] == READ_CAPACITY) { | |
1591 | rc = usbat_flash_check_media(us, info); | |
1592 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1593 | return rc; | |
1594 | ||
1595 | rc = usbat_flash_get_sector_count(us, info); | |
1596 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1597 | return rc; | |
1598 | ||
b7b1e655 DD |
1599 | /* hard coded 512 byte sectors as per ATA spec */ |
1600 | info->ssize = 0x200; | |
1da177e4 LT |
1601 | US_DEBUGP("usbat_flash_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n", |
1602 | info->sectors, info->ssize); | |
1603 | ||
b7b1e655 DD |
1604 | /* |
1605 | * build the reply | |
1606 | * note: must return the sector number of the last sector, | |
1607 | * *not* the total number of sectors | |
1608 | */ | |
1da177e4 LT |
1609 | ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1); |
1610 | ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize); | |
1611 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
1612 | ||
1613 | return USB_STOR_TRANSPORT_GOOD; | |
1614 | } | |
1615 | ||
1616 | if (srb->cmnd[0] == MODE_SELECT_10) { | |
1617 | US_DEBUGP("usbat_flash_transport: Gah! MODE_SELECT_10.\n"); | |
1618 | return USB_STOR_TRANSPORT_ERROR; | |
1619 | } | |
1620 | ||
1621 | if (srb->cmnd[0] == READ_10) { | |
1622 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
1623 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1624 | ||
1625 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); | |
1626 | ||
1627 | US_DEBUGP("usbat_flash_transport: READ_10: read block 0x%04lx count %ld\n", block, blocks); | |
1628 | return usbat_flash_read_data(us, info, block, blocks); | |
1629 | } | |
1630 | ||
1631 | if (srb->cmnd[0] == READ_12) { | |
b7b1e655 DD |
1632 | /* |
1633 | * I don't think we'll ever see a READ_12 but support it anyway | |
1634 | */ | |
1da177e4 LT |
1635 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
1636 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1637 | ||
1638 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | | |
1639 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); | |
1640 | ||
1641 | US_DEBUGP("usbat_flash_transport: READ_12: read block 0x%04lx count %ld\n", block, blocks); | |
1642 | return usbat_flash_read_data(us, info, block, blocks); | |
1643 | } | |
1644 | ||
1645 | if (srb->cmnd[0] == WRITE_10) { | |
1646 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
1647 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1648 | ||
1649 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); | |
1650 | ||
1651 | US_DEBUGP("usbat_flash_transport: WRITE_10: write block 0x%04lx count %ld\n", block, blocks); | |
1652 | return usbat_flash_write_data(us, info, block, blocks); | |
1653 | } | |
1654 | ||
1655 | if (srb->cmnd[0] == WRITE_12) { | |
b7b1e655 DD |
1656 | /* |
1657 | * I don't think we'll ever see a WRITE_12 but support it anyway | |
1658 | */ | |
1da177e4 LT |
1659 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
1660 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1661 | ||
1662 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | | |
1663 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); | |
1664 | ||
1665 | US_DEBUGP("usbat_flash_transport: WRITE_12: write block 0x%04lx count %ld\n", block, blocks); | |
1666 | return usbat_flash_write_data(us, info, block, blocks); | |
1667 | } | |
1668 | ||
1669 | ||
1670 | if (srb->cmnd[0] == TEST_UNIT_READY) { | |
1671 | US_DEBUGP("usbat_flash_transport: TEST_UNIT_READY.\n"); | |
1672 | ||
1673 | rc = usbat_flash_check_media(us, info); | |
1674 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1675 | return rc; | |
1676 | ||
1677 | return usbat_check_status(us); | |
1678 | } | |
1679 | ||
1680 | if (srb->cmnd[0] == REQUEST_SENSE) { | |
1681 | US_DEBUGP("usbat_flash_transport: REQUEST_SENSE.\n"); | |
1682 | ||
1683 | memset(ptr, 0, 18); | |
1684 | ptr[0] = 0xF0; | |
1685 | ptr[2] = info->sense_key; | |
1686 | ptr[7] = 11; | |
1687 | ptr[12] = info->sense_asc; | |
1688 | ptr[13] = info->sense_ascq; | |
1689 | usb_stor_set_xfer_buf(ptr, 18, srb); | |
1690 | ||
1691 | return USB_STOR_TRANSPORT_GOOD; | |
1692 | } | |
1693 | ||
1694 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { | |
b7b1e655 DD |
1695 | /* |
1696 | * sure. whatever. not like we can stop the user from popping | |
1697 | * the media out of the device (no locking doors, etc) | |
1698 | */ | |
1da177e4 LT |
1699 | return USB_STOR_TRANSPORT_GOOD; |
1700 | } | |
1701 | ||
1702 | US_DEBUGP("usbat_flash_transport: Gah! Unknown command: %d (0x%x)\n", | |
1703 | srb->cmnd[0], srb->cmnd[0]); | |
1704 | info->sense_key = 0x05; | |
1705 | info->sense_asc = 0x20; | |
1706 | info->sense_ascq = 0x00; | |
1707 | return USB_STOR_TRANSPORT_FAILED; | |
1708 | } | |
1709 | ||
bdcfd9e3 PC |
1710 | int init_usbat_cd(struct us_data *us) |
1711 | { | |
1712 | return init_usbat(us, USBAT_DEV_HP8200); | |
1713 | } | |
1714 | ||
1715 | ||
1716 | int init_usbat_flash(struct us_data *us) | |
1717 | { | |
1718 | return init_usbat(us, USBAT_DEV_FLASH); | |
1719 | } | |
1720 | ||
1721 | int init_usbat_probe(struct us_data *us) | |
1722 | { | |
1723 | return init_usbat(us, 0); | |
1724 | } | |
1725 | ||
1da177e4 LT |
1726 | /* |
1727 | * Default transport function. Attempts to detect which transport function | |
1728 | * should be called, makes it the new default, and calls it. | |
1729 | * | |
1730 | * This function should never be called. Our usbat_init() function detects the | |
1731 | * device type and changes the us->transport ptr to the transport function | |
1732 | * relevant to the device. | |
1733 | * However, we'll support this impossible(?) case anyway. | |
1734 | */ | |
1735 | int usbat_transport(struct scsi_cmnd *srb, struct us_data *us) | |
1736 | { | |
1737 | struct usbat_info *info = (struct usbat_info*) (us->extra); | |
1738 | ||
bdcfd9e3 | 1739 | if (usbat_set_transport(us, info, 0)) |
1da177e4 LT |
1740 | return USB_STOR_TRANSPORT_ERROR; |
1741 | ||
1742 | return us->transport(srb, us); | |
1743 | } |