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