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1da177e4 LT |
1 | /* Driver for SCM Microsystems USB-ATAPI cable |
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 | /* | |
70 | * Convenience function to produce an ATAPI read/write sectors command | |
71 | * Use cmd=0x20 for read, cmd=0x30 for write | |
72 | */ | |
73 | static void usbat_pack_atapi_sector_cmd(unsigned char *buf, | |
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, | |
134 | unsigned char *data, | |
135 | unsigned int len) | |
136 | { | |
137 | if (len == 0) | |
138 | return USB_STOR_XFER_GOOD; | |
139 | ||
140 | US_DEBUGP("usbat_bulk_read: len = %d\n", len); | |
141 | return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, data, len, NULL); | |
142 | } | |
143 | ||
144 | /* | |
145 | * Convenience function to perform a bulk write | |
146 | */ | |
147 | static int usbat_bulk_write(struct us_data *us, | |
148 | unsigned char *data, | |
149 | unsigned int len) | |
150 | { | |
151 | if (len == 0) | |
152 | return USB_STOR_XFER_GOOD; | |
153 | ||
154 | US_DEBUGP("usbat_bulk_write: len = %d\n", len); | |
155 | return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, data, len, NULL); | |
156 | } | |
157 | ||
158 | /* | |
159 | * Some USBAT-specific commands can only be executed over a command transport | |
160 | * This transport allows one (len=8) or two (len=16) vendor-specific commands | |
161 | * to be executed. | |
162 | */ | |
163 | static int usbat_execute_command(struct us_data *us, | |
164 | unsigned char *commands, | |
165 | unsigned int len) | |
166 | { | |
167 | return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, | |
168 | USBAT_CMD_EXEC_CMD, 0x40, 0, 0, | |
169 | commands, len); | |
170 | } | |
171 | ||
172 | /* | |
173 | * Read the status register | |
174 | */ | |
175 | static int usbat_get_status(struct us_data *us, unsigned char *status) | |
176 | { | |
177 | int rc; | |
178 | rc = usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status); | |
179 | ||
180 | US_DEBUGP("usbat_get_status: 0x%02X\n", (unsigned short) (*status)); | |
181 | return rc; | |
182 | } | |
183 | ||
184 | /* | |
185 | * Check the device status | |
186 | */ | |
187 | static int usbat_check_status(struct us_data *us) | |
188 | { | |
189 | unsigned char *reply = us->iobuf; | |
190 | int rc; | |
191 | ||
192 | if (!us) | |
193 | return USB_STOR_TRANSPORT_ERROR; | |
194 | ||
195 | rc = usbat_get_status(us, reply); | |
196 | if (rc != USB_STOR_XFER_GOOD) | |
197 | return USB_STOR_TRANSPORT_FAILED; | |
198 | ||
199 | if (*reply & 0x01 && *reply != 0x51) // error/check condition (0x51 is ok) | |
200 | return USB_STOR_TRANSPORT_FAILED; | |
201 | ||
202 | if (*reply & 0x20) // device fault | |
203 | return USB_STOR_TRANSPORT_FAILED; | |
204 | ||
205 | return USB_STOR_TRANSPORT_GOOD; | |
206 | } | |
207 | ||
208 | /* | |
209 | * Stores critical information in internal registers in prepartion for the execution | |
210 | * of a conditional usbat_read_blocks or usbat_write_blocks call. | |
211 | */ | |
212 | static int usbat_set_shuttle_features(struct us_data *us, | |
213 | unsigned char external_trigger, | |
214 | unsigned char epp_control, | |
215 | unsigned char mask_byte, | |
216 | unsigned char test_pattern, | |
217 | unsigned char subcountH, | |
218 | unsigned char subcountL) | |
219 | { | |
220 | unsigned char *command = us->iobuf; | |
221 | ||
222 | command[0] = 0x40; | |
223 | command[1] = USBAT_CMD_SET_FEAT; | |
224 | ||
225 | // The only bit relevant to ATA access is bit 6 | |
226 | // which defines 8 bit data access (set) or 16 bit (unset) | |
227 | command[2] = epp_control; | |
228 | ||
229 | // If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1, | |
230 | // ET1 and ET2 define an external event to be checked for on event of a | |
231 | // _read_blocks or _write_blocks operation. The read/write will not take | |
232 | // place unless the defined trigger signal is active. | |
233 | command[3] = external_trigger; | |
234 | ||
235 | // The resultant byte of the mask operation (see mask_byte) is compared for | |
236 | // equivalence with this test pattern. If equal, the read/write will take | |
237 | // place. | |
238 | command[4] = test_pattern; | |
239 | ||
240 | // This value is logically ANDed with the status register field specified | |
241 | // in the read/write command. | |
242 | command[5] = mask_byte; | |
243 | ||
244 | // If ALQ is set in the qualifier, this field contains the address of the | |
245 | // registers where the byte count should be read for transferring the data. | |
246 | // If ALQ is not set, then this field contains the number of bytes to be | |
247 | // transferred. | |
248 | command[6] = subcountL; | |
249 | command[7] = subcountH; | |
250 | ||
251 | return usbat_execute_command(us, command, 8); | |
252 | } | |
253 | ||
254 | /* | |
255 | * Block, waiting for an ATA device to become not busy or to report | |
256 | * an error condition. | |
257 | */ | |
258 | static int usbat_wait_not_busy(struct us_data *us, int minutes) | |
259 | { | |
260 | int i; | |
261 | int result; | |
262 | unsigned char *status = us->iobuf; | |
263 | ||
264 | /* Synchronizing cache on a CDR could take a heck of a long time, | |
265 | * but probably not more than 10 minutes or so. On the other hand, | |
266 | * doing a full blank on a CDRW at speed 1 will take about 75 | |
267 | * minutes! | |
268 | */ | |
269 | ||
270 | for (i=0; i<1200+minutes*60; i++) { | |
271 | ||
272 | result = usbat_get_status(us, status); | |
273 | ||
274 | if (result!=USB_STOR_XFER_GOOD) | |
275 | return USB_STOR_TRANSPORT_ERROR; | |
276 | if (*status & 0x01) { // check condition | |
277 | result = usbat_read(us, USBAT_ATA, 0x10, status); | |
278 | return USB_STOR_TRANSPORT_FAILED; | |
279 | } | |
280 | if (*status & 0x20) // device fault | |
281 | return USB_STOR_TRANSPORT_FAILED; | |
282 | ||
283 | if ((*status & 0x80)==0x00) { // not busy | |
284 | US_DEBUGP("Waited not busy for %d steps\n", i); | |
285 | return USB_STOR_TRANSPORT_GOOD; | |
286 | } | |
287 | ||
288 | if (i<500) | |
289 | msleep(10); // 5 seconds | |
290 | else if (i<700) | |
291 | msleep(50); // 10 seconds | |
292 | else if (i<1200) | |
293 | msleep(100); // 50 seconds | |
294 | else | |
295 | msleep(1000); // X minutes | |
296 | } | |
297 | ||
298 | US_DEBUGP("Waited not busy for %d minutes, timing out.\n", | |
299 | minutes); | |
300 | return USB_STOR_TRANSPORT_FAILED; | |
301 | } | |
302 | ||
303 | /* | |
304 | * Read block data from the data register | |
305 | */ | |
306 | static int usbat_read_block(struct us_data *us, | |
307 | unsigned char *content, | |
308 | unsigned short len) | |
309 | { | |
310 | int result; | |
311 | unsigned char *command = us->iobuf; | |
312 | ||
313 | if (!len) | |
314 | return USB_STOR_TRANSPORT_GOOD; | |
315 | ||
316 | command[0] = 0xC0; | |
317 | command[1] = USBAT_ATA | USBAT_CMD_READ_BLOCK; | |
318 | command[2] = USBAT_ATA_DATA; | |
319 | command[3] = 0; | |
320 | command[4] = 0; | |
321 | command[5] = 0; | |
322 | command[6] = LSB_of(len); | |
323 | command[7] = MSB_of(len); | |
324 | ||
325 | result = usbat_execute_command(us, command, 8); | |
326 | if (result != USB_STOR_XFER_GOOD) | |
327 | return USB_STOR_TRANSPORT_ERROR; | |
328 | ||
329 | result = usbat_bulk_read(us, content, len); | |
330 | return (result == USB_STOR_XFER_GOOD ? | |
331 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); | |
332 | } | |
333 | ||
334 | /* | |
335 | * Write block data via the data register | |
336 | */ | |
337 | static int usbat_write_block(struct us_data *us, | |
338 | unsigned char access, | |
339 | unsigned char *content, | |
340 | unsigned short len, | |
341 | int minutes) | |
342 | { | |
343 | int result; | |
344 | unsigned char *command = us->iobuf; | |
345 | ||
346 | if (!len) | |
347 | return USB_STOR_TRANSPORT_GOOD; | |
348 | ||
349 | command[0] = 0x40; | |
350 | command[1] = access | USBAT_CMD_WRITE_BLOCK; | |
351 | command[2] = USBAT_ATA_DATA; | |
352 | command[3] = 0; | |
353 | command[4] = 0; | |
354 | command[5] = 0; | |
355 | command[6] = LSB_of(len); | |
356 | command[7] = MSB_of(len); | |
357 | ||
358 | result = usbat_execute_command(us, command, 8); | |
359 | ||
360 | if (result != USB_STOR_XFER_GOOD) | |
361 | return USB_STOR_TRANSPORT_ERROR; | |
362 | ||
363 | result = usbat_bulk_write(us, content, len); | |
364 | if (result != USB_STOR_XFER_GOOD) | |
365 | return USB_STOR_TRANSPORT_ERROR; | |
366 | ||
367 | return usbat_wait_not_busy(us, minutes); | |
368 | } | |
369 | ||
370 | /* | |
371 | * Process read and write requests | |
372 | */ | |
373 | static int usbat_hp8200e_rw_block_test(struct us_data *us, | |
374 | unsigned char access, | |
375 | unsigned char *registers, | |
376 | unsigned char *data_out, | |
377 | unsigned short num_registers, | |
378 | unsigned char data_reg, | |
379 | unsigned char status_reg, | |
380 | unsigned char timeout, | |
381 | unsigned char qualifier, | |
382 | int direction, | |
383 | unsigned char *content, | |
384 | unsigned short len, | |
385 | int use_sg, | |
386 | int minutes) | |
387 | { | |
388 | int result; | |
389 | unsigned int pipe = (direction == DMA_FROM_DEVICE) ? | |
390 | us->recv_bulk_pipe : us->send_bulk_pipe; | |
391 | ||
392 | unsigned char *command = us->iobuf; | |
393 | int i, j; | |
394 | int cmdlen; | |
395 | unsigned char *data = us->iobuf; | |
396 | unsigned char *status = us->iobuf; | |
397 | ||
398 | BUG_ON(num_registers > US_IOBUF_SIZE/2); | |
399 | ||
400 | for (i=0; i<20; i++) { | |
401 | ||
402 | /* | |
403 | * The first time we send the full command, which consists | |
404 | * of downloading the SCSI command followed by downloading | |
405 | * the data via a write-and-test. Any other time we only | |
406 | * send the command to download the data -- the SCSI command | |
407 | * is still 'active' in some sense in the device. | |
408 | * | |
409 | * We're only going to try sending the data 10 times. After | |
410 | * that, we just return a failure. | |
411 | */ | |
412 | ||
413 | if (i==0) { | |
414 | cmdlen = 16; | |
415 | // Write to multiple registers | |
416 | // Not really sure the 0x07, 0x17, 0xfc, 0xe7 is necessary here, | |
417 | // but that's what came out of the trace every single time. | |
418 | command[0] = 0x40; | |
419 | command[1] = access | USBAT_CMD_WRITE_REGS; | |
420 | command[2] = 0x07; | |
421 | command[3] = 0x17; | |
422 | command[4] = 0xFC; | |
423 | command[5] = 0xE7; | |
424 | command[6] = LSB_of(num_registers*2); | |
425 | command[7] = MSB_of(num_registers*2); | |
426 | } else | |
427 | cmdlen = 8; | |
428 | ||
429 | // Conditionally read or write blocks | |
430 | command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0); | |
431 | command[cmdlen-7] = access | | |
432 | (direction==DMA_TO_DEVICE ? | |
433 | USBAT_CMD_COND_WRITE_BLOCK : USBAT_CMD_COND_READ_BLOCK); | |
434 | command[cmdlen-6] = data_reg; | |
435 | command[cmdlen-5] = status_reg; | |
436 | command[cmdlen-4] = timeout; | |
437 | command[cmdlen-3] = qualifier; | |
438 | command[cmdlen-2] = LSB_of(len); | |
439 | command[cmdlen-1] = MSB_of(len); | |
440 | ||
441 | result = usbat_execute_command(us, command, cmdlen); | |
442 | ||
443 | if (result != USB_STOR_XFER_GOOD) | |
444 | return USB_STOR_TRANSPORT_ERROR; | |
445 | ||
446 | if (i==0) { | |
447 | ||
448 | for (j=0; j<num_registers; j++) { | |
449 | data[j<<1] = registers[j]; | |
450 | data[1+(j<<1)] = data_out[j]; | |
451 | } | |
452 | ||
453 | result = usbat_bulk_write(us, data, num_registers*2); | |
454 | if (result != USB_STOR_XFER_GOOD) | |
455 | return USB_STOR_TRANSPORT_ERROR; | |
456 | ||
457 | } | |
458 | ||
459 | ||
460 | //US_DEBUGP("Transfer %s %d bytes, sg buffers %d\n", | |
461 | // direction == DMA_TO_DEVICE ? "out" : "in", | |
462 | // len, use_sg); | |
463 | ||
464 | result = usb_stor_bulk_transfer_sg(us, | |
465 | pipe, content, len, use_sg, NULL); | |
466 | ||
467 | /* | |
468 | * If we get a stall on the bulk download, we'll retry | |
469 | * the bulk download -- but not the SCSI command because | |
470 | * in some sense the SCSI command is still 'active' and | |
471 | * waiting for the data. Don't ask me why this should be; | |
472 | * I'm only following what the Windoze driver did. | |
473 | * | |
474 | * Note that a stall for the test-and-read/write command means | |
475 | * that the test failed. In this case we're testing to make | |
476 | * sure that the device is error-free | |
477 | * (i.e. bit 0 -- CHK -- of status is 0). The most likely | |
478 | * hypothesis is that the USBAT chip somehow knows what | |
479 | * the device will accept, but doesn't give the device any | |
480 | * data until all data is received. Thus, the device would | |
481 | * still be waiting for the first byte of data if a stall | |
482 | * occurs, even if the stall implies that some data was | |
483 | * transferred. | |
484 | */ | |
485 | ||
486 | if (result == USB_STOR_XFER_SHORT || | |
487 | result == USB_STOR_XFER_STALLED) { | |
488 | ||
489 | /* | |
490 | * If we're reading and we stalled, then clear | |
491 | * the bulk output pipe only the first time. | |
492 | */ | |
493 | ||
494 | if (direction==DMA_FROM_DEVICE && i==0) { | |
495 | if (usb_stor_clear_halt(us, | |
496 | us->send_bulk_pipe) < 0) | |
497 | return USB_STOR_TRANSPORT_ERROR; | |
498 | } | |
499 | ||
500 | /* | |
501 | * Read status: is the device angry, or just busy? | |
502 | */ | |
503 | ||
504 | result = usbat_read(us, USBAT_ATA, | |
505 | direction==DMA_TO_DEVICE ? | |
506 | USBAT_ATA_STATUS : USBAT_ATA_ALTSTATUS, | |
507 | status); | |
508 | ||
509 | if (result!=USB_STOR_XFER_GOOD) | |
510 | return USB_STOR_TRANSPORT_ERROR; | |
511 | if (*status & 0x01) // check condition | |
512 | return USB_STOR_TRANSPORT_FAILED; | |
513 | if (*status & 0x20) // device fault | |
514 | return USB_STOR_TRANSPORT_FAILED; | |
515 | ||
516 | US_DEBUGP("Redoing %s\n", | |
517 | direction==DMA_TO_DEVICE ? "write" : "read"); | |
518 | ||
519 | } else if (result != USB_STOR_XFER_GOOD) | |
520 | return USB_STOR_TRANSPORT_ERROR; | |
521 | else | |
522 | return usbat_wait_not_busy(us, minutes); | |
523 | ||
524 | } | |
525 | ||
526 | US_DEBUGP("Bummer! %s bulk data 20 times failed.\n", | |
527 | direction==DMA_TO_DEVICE ? "Writing" : "Reading"); | |
528 | ||
529 | return USB_STOR_TRANSPORT_FAILED; | |
530 | } | |
531 | ||
532 | /* | |
533 | * Write to multiple registers: | |
534 | * Allows us to write specific data to any registers. The data to be written | |
535 | * gets packed in this sequence: reg0, data0, reg1, data1, ..., regN, dataN | |
536 | * which gets sent through bulk out. | |
537 | * Not designed for large transfers of data! | |
538 | */ | |
539 | static int usbat_multiple_write(struct us_data *us, | |
540 | unsigned char *registers, | |
541 | unsigned char *data_out, | |
542 | unsigned short num_registers) | |
543 | { | |
544 | int i, result; | |
545 | unsigned char *data = us->iobuf; | |
546 | unsigned char *command = us->iobuf; | |
547 | ||
548 | BUG_ON(num_registers > US_IOBUF_SIZE/2); | |
549 | ||
550 | // Write to multiple registers, ATA access | |
551 | command[0] = 0x40; | |
552 | command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS; | |
553 | ||
554 | // No relevance | |
555 | command[2] = 0; | |
556 | command[3] = 0; | |
557 | command[4] = 0; | |
558 | command[5] = 0; | |
559 | ||
560 | // Number of bytes to be transferred (incl. addresses and data) | |
561 | command[6] = LSB_of(num_registers*2); | |
562 | command[7] = MSB_of(num_registers*2); | |
563 | ||
564 | // The setup command | |
565 | result = usbat_execute_command(us, command, 8); | |
566 | if (result != USB_STOR_XFER_GOOD) | |
567 | return USB_STOR_TRANSPORT_ERROR; | |
568 | ||
569 | // Create the reg/data, reg/data sequence | |
570 | for (i=0; i<num_registers; i++) { | |
571 | data[i<<1] = registers[i]; | |
572 | data[1+(i<<1)] = data_out[i]; | |
573 | } | |
574 | ||
575 | // Send the data | |
576 | result = usbat_bulk_write(us, data, num_registers*2); | |
577 | if (result != USB_STOR_XFER_GOOD) | |
578 | return USB_STOR_TRANSPORT_ERROR; | |
579 | ||
580 | if (usbat_get_device_type(us) == USBAT_DEV_HP8200) | |
581 | return usbat_wait_not_busy(us, 0); | |
582 | else | |
583 | return USB_STOR_TRANSPORT_GOOD; | |
584 | } | |
585 | ||
586 | /* | |
587 | * Conditionally read blocks from device: | |
588 | * Allows us to read blocks from a specific data register, based upon the | |
589 | * condition that a status register can be successfully masked with a status | |
590 | * qualifier. If this condition is not initially met, the read will wait | |
591 | * up until a maximum amount of time has elapsed, as specified by timeout. | |
592 | * The read will start when the condition is met, otherwise the command aborts. | |
593 | * | |
594 | * The qualifier defined here is not the value that is masked, it defines | |
595 | * conditions for the write to take place. The actual masked qualifier (and | |
596 | * other related details) are defined beforehand with _set_shuttle_features(). | |
597 | */ | |
598 | static int usbat_read_blocks(struct us_data *us, | |
599 | unsigned char *buffer, | |
600 | int len) | |
601 | { | |
602 | int result; | |
603 | unsigned char *command = us->iobuf; | |
604 | ||
605 | command[0] = 0xC0; | |
606 | command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK; | |
607 | command[2] = USBAT_ATA_DATA; | |
608 | command[3] = USBAT_ATA_STATUS; | |
609 | command[4] = 0xFD; // Timeout (ms); | |
610 | command[5] = USBAT_QUAL_FCQ; | |
611 | command[6] = LSB_of(len); | |
612 | command[7] = MSB_of(len); | |
613 | ||
614 | // Multiple block read setup command | |
615 | result = usbat_execute_command(us, command, 8); | |
616 | if (result != USB_STOR_XFER_GOOD) | |
617 | return USB_STOR_TRANSPORT_FAILED; | |
618 | ||
619 | // Read the blocks we just asked for | |
620 | result = usbat_bulk_read(us, buffer, len); | |
621 | if (result != USB_STOR_XFER_GOOD) | |
622 | return USB_STOR_TRANSPORT_FAILED; | |
623 | ||
624 | return USB_STOR_TRANSPORT_GOOD; | |
625 | } | |
626 | ||
627 | /* | |
628 | * Conditionally write blocks to device: | |
629 | * Allows us to write blocks to a specific data register, based upon the | |
630 | * condition that a status register can be successfully masked with a status | |
631 | * qualifier. If this condition is not initially met, the write will wait | |
632 | * up until a maximum amount of time has elapsed, as specified by timeout. | |
633 | * The read will start when the condition is met, otherwise the command aborts. | |
634 | * | |
635 | * The qualifier defined here is not the value that is masked, it defines | |
636 | * conditions for the write to take place. The actual masked qualifier (and | |
637 | * other related details) are defined beforehand with _set_shuttle_features(). | |
638 | */ | |
639 | static int usbat_write_blocks(struct us_data *us, | |
640 | unsigned char *buffer, | |
641 | int len) | |
642 | { | |
643 | int result; | |
644 | unsigned char *command = us->iobuf; | |
645 | ||
646 | command[0] = 0x40; | |
647 | command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK; | |
648 | command[2] = USBAT_ATA_DATA; | |
649 | command[3] = USBAT_ATA_STATUS; | |
650 | command[4] = 0xFD; // Timeout (ms) | |
651 | command[5] = USBAT_QUAL_FCQ; | |
652 | command[6] = LSB_of(len); | |
653 | command[7] = MSB_of(len); | |
654 | ||
655 | // Multiple block write setup command | |
656 | result = usbat_execute_command(us, command, 8); | |
657 | if (result != USB_STOR_XFER_GOOD) | |
658 | return USB_STOR_TRANSPORT_FAILED; | |
659 | ||
660 | // Write the data | |
661 | result = usbat_bulk_write(us, buffer, len); | |
662 | if (result != USB_STOR_XFER_GOOD) | |
663 | return USB_STOR_TRANSPORT_FAILED; | |
664 | ||
665 | return USB_STOR_TRANSPORT_GOOD; | |
666 | } | |
667 | ||
668 | /* | |
669 | * Read the User IO register | |
670 | */ | |
671 | static int usbat_read_user_io(struct us_data *us, unsigned char *data_flags) | |
672 | { | |
673 | int result; | |
674 | ||
675 | result = usb_stor_ctrl_transfer(us, | |
676 | us->recv_ctrl_pipe, | |
677 | USBAT_CMD_UIO, | |
678 | 0xC0, | |
679 | 0, | |
680 | 0, | |
681 | data_flags, | |
682 | USBAT_UIO_READ); | |
683 | ||
684 | US_DEBUGP("usbat_read_user_io: UIO register reads %02X\n", (unsigned short) (*data_flags)); | |
685 | ||
686 | return result; | |
687 | } | |
688 | ||
689 | /* | |
690 | * Write to the User IO register | |
691 | */ | |
692 | static int usbat_write_user_io(struct us_data *us, | |
693 | unsigned char enable_flags, | |
694 | unsigned char data_flags) | |
695 | { | |
696 | return usb_stor_ctrl_transfer(us, | |
697 | us->send_ctrl_pipe, | |
698 | USBAT_CMD_UIO, | |
699 | 0x40, | |
700 | short_pack(enable_flags, data_flags), | |
701 | 0, | |
702 | NULL, | |
703 | USBAT_UIO_WRITE); | |
704 | } | |
705 | ||
706 | /* | |
707 | * Reset the device | |
708 | * Often needed on media change. | |
709 | */ | |
710 | static int usbat_device_reset(struct us_data *us) | |
711 | { | |
712 | int rc; | |
713 | ||
714 | // Reset peripheral, enable peripheral control signals | |
715 | // (bring reset signal up) | |
716 | rc = usbat_write_user_io(us, | |
717 | USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
718 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
719 | if (rc != USB_STOR_XFER_GOOD) | |
720 | return USB_STOR_TRANSPORT_ERROR; | |
721 | ||
722 | // Enable peripheral control signals | |
723 | // (bring reset signal down) | |
724 | rc = usbat_write_user_io(us, | |
725 | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
726 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
727 | if (rc != USB_STOR_XFER_GOOD) | |
728 | return USB_STOR_TRANSPORT_ERROR; | |
729 | ||
730 | return USB_STOR_TRANSPORT_GOOD; | |
731 | } | |
732 | ||
733 | /* | |
734 | * Enable card detect | |
735 | */ | |
736 | static int usbat_device_enable_cdt(struct us_data *us) | |
737 | { | |
738 | int rc; | |
739 | ||
740 | // Enable peripheral control signals and card detect | |
741 | rc = usbat_write_user_io(us, | |
742 | USBAT_UIO_ACKD | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
743 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
744 | if (rc != USB_STOR_XFER_GOOD) | |
745 | return USB_STOR_TRANSPORT_ERROR; | |
746 | ||
747 | return USB_STOR_TRANSPORT_GOOD; | |
748 | } | |
749 | ||
750 | /* | |
751 | * Determine if media is present. | |
752 | */ | |
753 | static int usbat_flash_check_media_present(unsigned char *uio) | |
754 | { | |
755 | if (*uio & USBAT_UIO_UI0) { | |
756 | US_DEBUGP("usbat_flash_check_media_present: no media detected\n"); | |
757 | return USBAT_FLASH_MEDIA_NONE; | |
758 | } | |
759 | ||
760 | return USBAT_FLASH_MEDIA_CF; | |
761 | } | |
762 | ||
763 | /* | |
764 | * Determine if media has changed since last operation | |
765 | */ | |
766 | static int usbat_flash_check_media_changed(unsigned char *uio) | |
767 | { | |
768 | if (*uio & USBAT_UIO_0) { | |
769 | US_DEBUGP("usbat_flash_check_media_changed: media change detected\n"); | |
770 | return USBAT_FLASH_MEDIA_CHANGED; | |
771 | } | |
772 | ||
773 | return USBAT_FLASH_MEDIA_SAME; | |
774 | } | |
775 | ||
776 | /* | |
777 | * Check for media change / no media and handle the situation appropriately | |
778 | */ | |
779 | static int usbat_flash_check_media(struct us_data *us, | |
780 | struct usbat_info *info) | |
781 | { | |
782 | int rc; | |
783 | unsigned char *uio = us->iobuf; | |
784 | ||
785 | rc = usbat_read_user_io(us, uio); | |
786 | if (rc != USB_STOR_XFER_GOOD) | |
787 | return USB_STOR_TRANSPORT_ERROR; | |
788 | ||
093cf723 | 789 | // Check for media existence |
1da177e4 LT |
790 | rc = usbat_flash_check_media_present(uio); |
791 | if (rc == USBAT_FLASH_MEDIA_NONE) { | |
792 | info->sense_key = 0x02; | |
793 | info->sense_asc = 0x3A; | |
794 | info->sense_ascq = 0x00; | |
795 | return USB_STOR_TRANSPORT_FAILED; | |
796 | } | |
797 | ||
798 | // Check for media change | |
799 | rc = usbat_flash_check_media_changed(uio); | |
800 | if (rc == USBAT_FLASH_MEDIA_CHANGED) { | |
801 | ||
802 | // Reset and re-enable card detect | |
803 | rc = usbat_device_reset(us); | |
804 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
805 | return rc; | |
806 | rc = usbat_device_enable_cdt(us); | |
807 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
808 | return rc; | |
809 | ||
810 | msleep(50); | |
811 | ||
812 | rc = usbat_read_user_io(us, uio); | |
813 | if (rc != USB_STOR_XFER_GOOD) | |
814 | return USB_STOR_TRANSPORT_ERROR; | |
815 | ||
816 | info->sense_key = UNIT_ATTENTION; | |
817 | info->sense_asc = 0x28; | |
818 | info->sense_ascq = 0x00; | |
819 | return USB_STOR_TRANSPORT_FAILED; | |
820 | } | |
821 | ||
822 | return USB_STOR_TRANSPORT_GOOD; | |
823 | } | |
824 | ||
825 | /* | |
826 | * Determine whether we are controlling a flash-based reader/writer, | |
827 | * or a HP8200-based CD drive. | |
828 | * Sets transport functions as appropriate. | |
829 | */ | |
830 | static int usbat_identify_device(struct us_data *us, | |
831 | struct usbat_info *info) | |
832 | { | |
833 | int rc; | |
834 | unsigned char status; | |
835 | ||
836 | if (!us || !info) | |
837 | return USB_STOR_TRANSPORT_ERROR; | |
838 | ||
839 | rc = usbat_device_reset(us); | |
840 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
841 | return rc; | |
842 | ||
843 | /* | |
844 | * By examining the device signature after a reset, we can identify | |
845 | * whether the device supports the ATAPI packet interface. | |
846 | * The flash-devices do not support this, whereas the HP CDRW's obviously | |
847 | * do. | |
848 | * | |
849 | * This method is not ideal, but works because no other devices have been | |
850 | * produced based on the USBAT/USBAT02. | |
851 | * | |
852 | * Section 9.1 of the ATAPI-4 spec states (amongst other things) that | |
853 | * after a device reset, a Cylinder low of 0x14 indicates that the device | |
854 | * does support packet commands. | |
855 | */ | |
856 | rc = usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, &status); | |
857 | if (rc != USB_STOR_XFER_GOOD) | |
858 | return USB_STOR_TRANSPORT_ERROR; | |
859 | ||
860 | US_DEBUGP("usbat_identify_device: Cylinder low is %02X\n", status); | |
861 | ||
862 | if (status == 0x14) { | |
863 | // Device is HP 8200 | |
864 | US_DEBUGP("usbat_identify_device: Detected HP8200 CDRW\n"); | |
865 | info->devicetype = USBAT_DEV_HP8200; | |
866 | } else { | |
867 | // Device is a CompactFlash reader/writer | |
868 | US_DEBUGP("usbat_identify_device: Detected Flash reader/writer\n"); | |
869 | info->devicetype = USBAT_DEV_FLASH; | |
870 | } | |
871 | ||
872 | return USB_STOR_TRANSPORT_GOOD; | |
873 | } | |
874 | ||
875 | /* | |
876 | * Set the transport function based on the device type | |
877 | */ | |
878 | static int usbat_set_transport(struct us_data *us, | |
879 | struct usbat_info *info) | |
880 | { | |
881 | int rc; | |
882 | ||
883 | if (!info->devicetype) { | |
884 | rc = usbat_identify_device(us, info); | |
885 | if (rc != USB_STOR_TRANSPORT_GOOD) { | |
886 | US_DEBUGP("usbat_set_transport: Could not identify device\n"); | |
887 | return 1; | |
888 | } | |
889 | } | |
890 | ||
891 | if (usbat_get_device_type(us) == USBAT_DEV_HP8200) | |
892 | us->transport = usbat_hp8200e_transport; | |
893 | else if (usbat_get_device_type(us) == USBAT_DEV_FLASH) | |
894 | us->transport = usbat_flash_transport; | |
895 | ||
896 | return 0; | |
897 | } | |
898 | ||
899 | /* | |
900 | * Read the media capacity | |
901 | */ | |
902 | static int usbat_flash_get_sector_count(struct us_data *us, | |
903 | struct usbat_info *info) | |
904 | { | |
905 | unsigned char registers[3] = { | |
906 | USBAT_ATA_SECCNT, | |
907 | USBAT_ATA_DEVICE, | |
908 | USBAT_ATA_CMD, | |
909 | }; | |
910 | unsigned char command[3] = { 0x01, 0xA0, 0xEC }; | |
911 | unsigned char *reply; | |
912 | unsigned char status; | |
913 | int rc; | |
914 | ||
915 | if (!us || !info) | |
916 | return USB_STOR_TRANSPORT_ERROR; | |
917 | ||
918 | reply = kmalloc(512, GFP_NOIO); | |
919 | if (!reply) | |
920 | return USB_STOR_TRANSPORT_ERROR; | |
921 | ||
922 | // ATAPI command : IDENTIFY DEVICE | |
923 | rc = usbat_multiple_write(us, registers, command, 3); | |
924 | if (rc != USB_STOR_XFER_GOOD) { | |
925 | US_DEBUGP("usbat_flash_get_sector_count: Gah! identify_device failed\n"); | |
926 | rc = USB_STOR_TRANSPORT_ERROR; | |
927 | goto leave; | |
928 | } | |
929 | ||
930 | // Read device status | |
931 | if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) { | |
932 | rc = USB_STOR_TRANSPORT_ERROR; | |
933 | goto leave; | |
934 | } | |
935 | ||
936 | msleep(100); | |
937 | ||
938 | // Read the device identification data | |
939 | rc = usbat_read_block(us, reply, 512); | |
940 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
941 | goto leave; | |
942 | ||
943 | info->sectors = ((u32)(reply[117]) << 24) | | |
944 | ((u32)(reply[116]) << 16) | | |
945 | ((u32)(reply[115]) << 8) | | |
946 | ((u32)(reply[114]) ); | |
947 | ||
948 | rc = USB_STOR_TRANSPORT_GOOD; | |
949 | ||
950 | leave: | |
951 | kfree(reply); | |
952 | return rc; | |
953 | } | |
954 | ||
955 | /* | |
956 | * Read data from device | |
957 | */ | |
958 | static int usbat_flash_read_data(struct us_data *us, | |
959 | struct usbat_info *info, | |
960 | u32 sector, | |
961 | u32 sectors) | |
962 | { | |
963 | unsigned char registers[7] = { | |
964 | USBAT_ATA_FEATURES, | |
965 | USBAT_ATA_SECCNT, | |
966 | USBAT_ATA_SECNUM, | |
967 | USBAT_ATA_LBA_ME, | |
968 | USBAT_ATA_LBA_HI, | |
969 | USBAT_ATA_DEVICE, | |
970 | USBAT_ATA_STATUS, | |
971 | }; | |
972 | unsigned char command[7]; | |
973 | unsigned char *buffer; | |
974 | unsigned char thistime; | |
975 | unsigned int totallen, alloclen; | |
976 | int len, result; | |
977 | unsigned int sg_idx = 0, sg_offset = 0; | |
978 | ||
979 | result = usbat_flash_check_media(us, info); | |
980 | if (result != USB_STOR_TRANSPORT_GOOD) | |
981 | return result; | |
982 | ||
983 | // we're working in LBA mode. according to the ATA spec, | |
984 | // we can support up to 28-bit addressing. I don't know if Jumpshot | |
985 | // supports beyond 24-bit addressing. It's kind of hard to test | |
986 | // since it requires > 8GB CF card. | |
987 | ||
988 | if (sector > 0x0FFFFFFF) | |
989 | return USB_STOR_TRANSPORT_ERROR; | |
990 | ||
991 | totallen = sectors * info->ssize; | |
992 | ||
993 | // Since we don't read more than 64 KB at a time, we have to create | |
994 | // a bounce buffer and move the data a piece at a time between the | |
995 | // bounce buffer and the actual transfer buffer. | |
996 | ||
997 | alloclen = min(totallen, 65536u); | |
998 | buffer = kmalloc(alloclen, GFP_NOIO); | |
999 | if (buffer == NULL) | |
1000 | return USB_STOR_TRANSPORT_ERROR; | |
1001 | ||
1002 | do { | |
1003 | // loop, never allocate or transfer more than 64k at once | |
1004 | // (min(128k, 255*info->ssize) is the real limit) | |
1005 | len = min(totallen, alloclen); | |
1006 | thistime = (len / info->ssize) & 0xff; | |
1007 | ||
1008 | // ATAPI command 0x20 (READ SECTORS) | |
1009 | usbat_pack_atapi_sector_cmd(command, thistime, sector, 0x20); | |
1010 | ||
1011 | // Write/execute ATAPI read command | |
1012 | result = usbat_multiple_write(us, registers, command, 7); | |
1013 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1014 | goto leave; | |
1015 | ||
1016 | // Read the data we just requested | |
1017 | result = usbat_read_blocks(us, buffer, len); | |
1018 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1019 | goto leave; | |
1020 | ||
1021 | US_DEBUGP("usbat_flash_read_data: %d bytes\n", len); | |
1022 | ||
1023 | // Store the data in the transfer buffer | |
1024 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1025 | &sg_idx, &sg_offset, TO_XFER_BUF); | |
1026 | ||
1027 | sector += thistime; | |
1028 | totallen -= len; | |
1029 | } while (totallen > 0); | |
1030 | ||
1031 | kfree(buffer); | |
1032 | return USB_STOR_TRANSPORT_GOOD; | |
1033 | ||
1034 | leave: | |
1035 | kfree(buffer); | |
1036 | return USB_STOR_TRANSPORT_ERROR; | |
1037 | } | |
1038 | ||
1039 | /* | |
1040 | * Write data to device | |
1041 | */ | |
1042 | static int usbat_flash_write_data(struct us_data *us, | |
1043 | struct usbat_info *info, | |
1044 | u32 sector, | |
1045 | u32 sectors) | |
1046 | { | |
1047 | unsigned char registers[7] = { | |
1048 | USBAT_ATA_FEATURES, | |
1049 | USBAT_ATA_SECCNT, | |
1050 | USBAT_ATA_SECNUM, | |
1051 | USBAT_ATA_LBA_ME, | |
1052 | USBAT_ATA_LBA_HI, | |
1053 | USBAT_ATA_DEVICE, | |
1054 | USBAT_ATA_STATUS, | |
1055 | }; | |
1056 | unsigned char command[7]; | |
1057 | unsigned char *buffer; | |
1058 | unsigned char thistime; | |
1059 | unsigned int totallen, alloclen; | |
1060 | int len, result; | |
1061 | unsigned int sg_idx = 0, sg_offset = 0; | |
1062 | ||
1063 | result = usbat_flash_check_media(us, info); | |
1064 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1065 | return result; | |
1066 | ||
1067 | // we're working in LBA mode. according to the ATA spec, | |
1068 | // we can support up to 28-bit addressing. I don't know if Jumpshot | |
1069 | // supports beyond 24-bit addressing. It's kind of hard to test | |
1070 | // since it requires > 8GB CF card. | |
1071 | ||
1072 | if (sector > 0x0FFFFFFF) | |
1073 | return USB_STOR_TRANSPORT_ERROR; | |
1074 | ||
1075 | totallen = sectors * info->ssize; | |
1076 | ||
1077 | // Since we don't write more than 64 KB at a time, we have to create | |
1078 | // a bounce buffer and move the data a piece at a time between the | |
1079 | // bounce buffer and the actual transfer buffer. | |
1080 | ||
1081 | alloclen = min(totallen, 65536u); | |
1082 | buffer = kmalloc(alloclen, GFP_NOIO); | |
1083 | if (buffer == NULL) | |
1084 | return USB_STOR_TRANSPORT_ERROR; | |
1085 | ||
1086 | do { | |
1087 | // loop, never allocate or transfer more than 64k at once | |
1088 | // (min(128k, 255*info->ssize) is the real limit) | |
1089 | len = min(totallen, alloclen); | |
1090 | thistime = (len / info->ssize) & 0xff; | |
1091 | ||
1092 | // Get the data from the transfer buffer | |
1093 | usb_stor_access_xfer_buf(buffer, len, us->srb, | |
1094 | &sg_idx, &sg_offset, FROM_XFER_BUF); | |
1095 | ||
1096 | // ATAPI command 0x30 (WRITE SECTORS) | |
1097 | usbat_pack_atapi_sector_cmd(command, thistime, sector, 0x30); | |
1098 | ||
1099 | // Write/execute ATAPI write command | |
1100 | result = usbat_multiple_write(us, registers, command, 7); | |
1101 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1102 | goto leave; | |
1103 | ||
1104 | // Write the data | |
1105 | result = usbat_write_blocks(us, buffer, len); | |
1106 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1107 | goto leave; | |
1108 | ||
1109 | sector += thistime; | |
1110 | totallen -= len; | |
1111 | } while (totallen > 0); | |
1112 | ||
1113 | kfree(buffer); | |
1114 | return result; | |
1115 | ||
1116 | leave: | |
1117 | kfree(buffer); | |
1118 | return USB_STOR_TRANSPORT_ERROR; | |
1119 | } | |
1120 | ||
1121 | /* | |
1122 | * Squeeze a potentially huge (> 65535 byte) read10 command into | |
1123 | * a little ( <= 65535 byte) ATAPI pipe | |
1124 | */ | |
1125 | static int usbat_hp8200e_handle_read10(struct us_data *us, | |
1126 | unsigned char *registers, | |
1127 | unsigned char *data, | |
1128 | struct scsi_cmnd *srb) | |
1129 | { | |
1130 | int result = USB_STOR_TRANSPORT_GOOD; | |
1131 | unsigned char *buffer; | |
1132 | unsigned int len; | |
1133 | unsigned int sector; | |
1134 | unsigned int sg_segment = 0; | |
1135 | unsigned int sg_offset = 0; | |
1136 | ||
1137 | US_DEBUGP("handle_read10: transfersize %d\n", | |
1138 | srb->transfersize); | |
1139 | ||
1140 | if (srb->request_bufflen < 0x10000) { | |
1141 | ||
1142 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1143 | registers, data, 19, | |
1144 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1145 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1146 | DMA_FROM_DEVICE, | |
1147 | srb->request_buffer, | |
1148 | srb->request_bufflen, srb->use_sg, 1); | |
1149 | ||
1150 | return result; | |
1151 | } | |
1152 | ||
1153 | /* | |
1154 | * Since we're requesting more data than we can handle in | |
1155 | * a single read command (max is 64k-1), we will perform | |
1156 | * multiple reads, but each read must be in multiples of | |
1157 | * a sector. Luckily the sector size is in srb->transfersize | |
1158 | * (see linux/drivers/scsi/sr.c). | |
1159 | */ | |
1160 | ||
1161 | if (data[7+0] == GPCMD_READ_CD) { | |
1162 | len = short_pack(data[7+9], data[7+8]); | |
1163 | len <<= 16; | |
1164 | len |= data[7+7]; | |
1165 | US_DEBUGP("handle_read10: GPCMD_READ_CD: len %d\n", len); | |
1166 | srb->transfersize = srb->request_bufflen/len; | |
1167 | } | |
1168 | ||
1169 | if (!srb->transfersize) { | |
1170 | srb->transfersize = 2048; /* A guess */ | |
1171 | US_DEBUGP("handle_read10: transfersize 0, forcing %d\n", | |
1172 | srb->transfersize); | |
1173 | } | |
1174 | ||
1175 | // Since we only read in one block at a time, we have to create | |
1176 | // a bounce buffer and move the data a piece at a time between the | |
1177 | // bounce buffer and the actual transfer buffer. | |
1178 | ||
1179 | len = (65535/srb->transfersize) * srb->transfersize; | |
1180 | US_DEBUGP("Max read is %d bytes\n", len); | |
1181 | len = min(len, srb->request_bufflen); | |
1182 | buffer = kmalloc(len, GFP_NOIO); | |
1183 | if (buffer == NULL) // bloody hell! | |
1184 | return USB_STOR_TRANSPORT_FAILED; | |
1185 | sector = short_pack(data[7+3], data[7+2]); | |
1186 | sector <<= 16; | |
1187 | sector |= short_pack(data[7+5], data[7+4]); | |
1188 | transferred = 0; | |
1189 | ||
1190 | sg_segment = 0; // for keeping track of where we are in | |
1191 | sg_offset = 0; // the scatter/gather list | |
1192 | ||
1193 | while (transferred != srb->request_bufflen) { | |
1194 | ||
1195 | if (len > srb->request_bufflen - transferred) | |
1196 | len = srb->request_bufflen - transferred; | |
1197 | ||
1198 | data[3] = len&0xFF; // (cylL) = expected length (L) | |
1199 | data[4] = (len>>8)&0xFF; // (cylH) = expected length (H) | |
1200 | ||
1201 | // Fix up the SCSI command sector and num sectors | |
1202 | ||
1203 | data[7+2] = MSB_of(sector>>16); // SCSI command sector | |
1204 | data[7+3] = LSB_of(sector>>16); | |
1205 | data[7+4] = MSB_of(sector&0xFFFF); | |
1206 | data[7+5] = LSB_of(sector&0xFFFF); | |
1207 | if (data[7+0] == GPCMD_READ_CD) | |
1208 | data[7+6] = 0; | |
1209 | data[7+7] = MSB_of(len / srb->transfersize); // SCSI command | |
1210 | data[7+8] = LSB_of(len / srb->transfersize); // num sectors | |
1211 | ||
1212 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1213 | registers, data, 19, | |
1214 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1215 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1216 | DMA_FROM_DEVICE, | |
1217 | buffer, | |
1218 | len, 0, 1); | |
1219 | ||
1220 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1221 | break; | |
1222 | ||
1223 | // Store the data in the transfer buffer | |
1224 | usb_stor_access_xfer_buf(buffer, len, srb, | |
1225 | &sg_segment, &sg_offset, TO_XFER_BUF); | |
1226 | ||
1227 | // Update the amount transferred and the sector number | |
1228 | ||
1229 | transferred += len; | |
1230 | sector += len / srb->transfersize; | |
1231 | ||
1232 | } // while transferred != srb->request_bufflen | |
1233 | ||
1234 | kfree(buffer); | |
1235 | return result; | |
1236 | } | |
1237 | ||
1238 | static int usbat_select_and_test_registers(struct us_data *us) | |
1239 | { | |
1240 | int selector; | |
1241 | unsigned char *status = us->iobuf; | |
1242 | unsigned char max_selector = 0xB0; | |
1243 | if (usbat_get_device_type(us) == USBAT_DEV_FLASH) | |
1244 | max_selector = 0xA0; | |
1245 | ||
1246 | // try device = master, then device = slave. | |
1247 | ||
1248 | for (selector = 0xA0; selector <= max_selector; selector += 0x10) { | |
1249 | ||
1250 | if (usbat_get_device_type(us) == USBAT_DEV_HP8200 && | |
1251 | usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) != | |
1252 | USB_STOR_XFER_GOOD) | |
1253 | return USB_STOR_TRANSPORT_ERROR; | |
1254 | ||
1255 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status) != | |
1256 | USB_STOR_XFER_GOOD) | |
1257 | return USB_STOR_TRANSPORT_ERROR; | |
1258 | ||
1259 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_DEVICE, status) != | |
1260 | USB_STOR_XFER_GOOD) | |
1261 | return USB_STOR_TRANSPORT_ERROR; | |
1262 | ||
1263 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1264 | USB_STOR_XFER_GOOD) | |
1265 | return USB_STOR_TRANSPORT_ERROR; | |
1266 | ||
1267 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) != | |
1268 | USB_STOR_XFER_GOOD) | |
1269 | return USB_STOR_TRANSPORT_ERROR; | |
1270 | ||
1271 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) != | |
1272 | USB_STOR_XFER_GOOD) | |
1273 | return USB_STOR_TRANSPORT_ERROR; | |
1274 | ||
1275 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) != | |
1276 | USB_STOR_XFER_GOOD) | |
1277 | return USB_STOR_TRANSPORT_ERROR; | |
1278 | ||
1279 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1280 | USB_STOR_XFER_GOOD) | |
1281 | return USB_STOR_TRANSPORT_ERROR; | |
1282 | ||
1283 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1284 | USB_STOR_XFER_GOOD) | |
1285 | return USB_STOR_TRANSPORT_ERROR; | |
1286 | } | |
1287 | ||
1288 | return USB_STOR_TRANSPORT_GOOD; | |
1289 | } | |
1290 | ||
1291 | /* | |
1292 | * Initialize the USBAT processor and the storage device | |
1293 | */ | |
1294 | int init_usbat(struct us_data *us) | |
1295 | { | |
1296 | int rc; | |
1297 | struct usbat_info *info; | |
1298 | unsigned char subcountH = USBAT_ATA_LBA_HI; | |
1299 | unsigned char subcountL = USBAT_ATA_LBA_ME; | |
1300 | unsigned char *status = us->iobuf; | |
1301 | ||
1302 | us->extra = kmalloc(sizeof(struct usbat_info), GFP_NOIO); | |
1303 | if (!us->extra) { | |
1304 | US_DEBUGP("init_usbat: Gah! Can't allocate storage for usbat info struct!\n"); | |
1305 | return 1; | |
1306 | } | |
1307 | memset(us->extra, 0, sizeof(struct usbat_info)); | |
1308 | info = (struct usbat_info *) (us->extra); | |
1309 | ||
1310 | // Enable peripheral control signals | |
1311 | rc = usbat_write_user_io(us, | |
1312 | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
1313 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
1314 | if (rc != USB_STOR_XFER_GOOD) | |
1315 | return USB_STOR_TRANSPORT_ERROR; | |
1316 | ||
1317 | US_DEBUGP("INIT 1\n"); | |
1318 | ||
1319 | msleep(2000); | |
1320 | ||
1321 | rc = usbat_read_user_io(us, status); | |
1322 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1323 | return rc; | |
1324 | ||
1325 | US_DEBUGP("INIT 2\n"); | |
1326 | ||
1327 | rc = usbat_read_user_io(us, status); | |
1328 | if (rc != USB_STOR_XFER_GOOD) | |
1329 | return USB_STOR_TRANSPORT_ERROR; | |
1330 | ||
1331 | rc = usbat_read_user_io(us, status); | |
1332 | if (rc != USB_STOR_XFER_GOOD) | |
1333 | return USB_STOR_TRANSPORT_ERROR; | |
1334 | ||
1335 | US_DEBUGP("INIT 3\n"); | |
1336 | ||
1337 | // At this point, we need to detect which device we are using | |
1338 | if (usbat_set_transport(us, info)) | |
1339 | return USB_STOR_TRANSPORT_ERROR; | |
1340 | ||
1341 | US_DEBUGP("INIT 4\n"); | |
1342 | ||
1343 | if (usbat_get_device_type(us) == USBAT_DEV_HP8200) { | |
1344 | msleep(250); | |
1345 | ||
1346 | // Write 0x80 to ISA port 0x3F | |
1347 | rc = usbat_write(us, USBAT_ISA, 0x3F, 0x80); | |
1348 | if (rc != USB_STOR_XFER_GOOD) | |
1349 | return USB_STOR_TRANSPORT_ERROR; | |
1350 | ||
1351 | US_DEBUGP("INIT 5\n"); | |
1352 | ||
1353 | // Read ISA port 0x27 | |
1354 | rc = usbat_read(us, USBAT_ISA, 0x27, status); | |
1355 | if (rc != USB_STOR_XFER_GOOD) | |
1356 | return USB_STOR_TRANSPORT_ERROR; | |
1357 | ||
1358 | US_DEBUGP("INIT 6\n"); | |
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 7\n"); | |
1365 | } | |
1366 | ||
1367 | rc = usbat_select_and_test_registers(us); | |
1368 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1369 | return rc; | |
1370 | ||
1371 | US_DEBUGP("INIT 8\n"); | |
1372 | ||
1373 | rc = usbat_read_user_io(us, status); | |
1374 | if (rc != USB_STOR_XFER_GOOD) | |
1375 | return USB_STOR_TRANSPORT_ERROR; | |
1376 | ||
1377 | US_DEBUGP("INIT 9\n"); | |
1378 | ||
1379 | // Enable peripheral control signals and card detect | |
1380 | rc = usbat_device_enable_cdt(us); | |
1381 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1382 | return rc; | |
1383 | ||
1384 | US_DEBUGP("INIT 10\n"); | |
1385 | ||
1386 | rc = usbat_read_user_io(us, status); | |
1387 | if (rc != USB_STOR_XFER_GOOD) | |
1388 | return USB_STOR_TRANSPORT_ERROR; | |
1389 | ||
1390 | US_DEBUGP("INIT 11\n"); | |
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 | ||
1398 | US_DEBUGP("INIT 12\n"); | |
1399 | ||
1400 | rc = usbat_select_and_test_registers(us); | |
1401 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1402 | return rc; | |
1403 | ||
1404 | US_DEBUGP("INIT 13\n"); | |
1405 | ||
1406 | if (usbat_get_device_type(us) == USBAT_DEV_FLASH) { | |
1407 | subcountH = 0x02; | |
1408 | subcountL = 0x00; | |
1409 | } | |
1410 | rc = usbat_set_shuttle_features(us, (USBAT_FEAT_ETEN | USBAT_FEAT_ET2 | USBAT_FEAT_ET1), | |
1411 | 0x00, 0x88, 0x08, subcountH, subcountL); | |
1412 | if (rc != USB_STOR_XFER_GOOD) | |
1413 | return USB_STOR_TRANSPORT_ERROR; | |
1414 | ||
1415 | US_DEBUGP("INIT 14\n"); | |
1416 | ||
1417 | return USB_STOR_TRANSPORT_GOOD; | |
1418 | } | |
1419 | ||
1420 | /* | |
1421 | * Transport for the HP 8200e | |
1422 | */ | |
1423 | static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us) | |
1424 | { | |
1425 | int result; | |
1426 | unsigned char *status = us->iobuf; | |
1427 | unsigned char registers[32]; | |
1428 | unsigned char data[32]; | |
1429 | unsigned int len; | |
1430 | int i; | |
1431 | char string[64]; | |
1432 | ||
1433 | len = srb->request_bufflen; | |
1434 | ||
1435 | /* Send A0 (ATA PACKET COMMAND). | |
1436 | Note: I guess we're never going to get any of the ATA | |
1437 | commands... just ATA Packet Commands. | |
1438 | */ | |
1439 | ||
1440 | registers[0] = USBAT_ATA_FEATURES; | |
1441 | registers[1] = USBAT_ATA_SECCNT; | |
1442 | registers[2] = USBAT_ATA_SECNUM; | |
1443 | registers[3] = USBAT_ATA_LBA_ME; | |
1444 | registers[4] = USBAT_ATA_LBA_HI; | |
1445 | registers[5] = USBAT_ATA_DEVICE; | |
1446 | registers[6] = USBAT_ATA_CMD; | |
1447 | data[0] = 0x00; | |
1448 | data[1] = 0x00; | |
1449 | data[2] = 0x00; | |
1450 | data[3] = len&0xFF; // (cylL) = expected length (L) | |
1451 | data[4] = (len>>8)&0xFF; // (cylH) = expected length (H) | |
1452 | data[5] = 0xB0; // (device sel) = slave | |
1453 | data[6] = 0xA0; // (command) = ATA PACKET COMMAND | |
1454 | ||
1455 | for (i=7; i<19; i++) { | |
1456 | registers[i] = 0x10; | |
1457 | data[i] = (i-7 >= srb->cmd_len) ? 0 : srb->cmnd[i-7]; | |
1458 | } | |
1459 | ||
1460 | result = usbat_get_status(us, status); | |
1461 | US_DEBUGP("Status = %02X\n", *status); | |
1462 | if (result != USB_STOR_XFER_GOOD) | |
1463 | return USB_STOR_TRANSPORT_ERROR; | |
1464 | if (srb->cmnd[0] == TEST_UNIT_READY) | |
1465 | transferred = 0; | |
1466 | ||
1467 | if (srb->sc_data_direction == DMA_TO_DEVICE) { | |
1468 | ||
1469 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1470 | registers, data, 19, | |
1471 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1472 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1473 | DMA_TO_DEVICE, | |
1474 | srb->request_buffer, | |
1475 | len, srb->use_sg, 10); | |
1476 | ||
1477 | if (result == USB_STOR_TRANSPORT_GOOD) { | |
1478 | transferred += len; | |
1479 | US_DEBUGP("Wrote %08X bytes\n", transferred); | |
1480 | } | |
1481 | ||
1482 | return result; | |
1483 | ||
1484 | } else if (srb->cmnd[0] == READ_10 || | |
1485 | srb->cmnd[0] == GPCMD_READ_CD) { | |
1486 | ||
1487 | return usbat_hp8200e_handle_read10(us, registers, data, srb); | |
1488 | ||
1489 | } | |
1490 | ||
1491 | if (len > 0xFFFF) { | |
1492 | US_DEBUGP("Error: len = %08X... what do I do now?\n", | |
1493 | len); | |
1494 | return USB_STOR_TRANSPORT_ERROR; | |
1495 | } | |
1496 | ||
1497 | if ( (result = usbat_multiple_write(us, | |
1498 | registers, data, 7)) != USB_STOR_TRANSPORT_GOOD) { | |
1499 | return result; | |
1500 | } | |
1501 | ||
1502 | // Write the 12-byte command header. | |
1503 | ||
1504 | // If the command is BLANK then set the timer for 75 minutes. | |
1505 | // Otherwise set it for 10 minutes. | |
1506 | ||
1507 | // NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW | |
1508 | // AT SPEED 4 IS UNRELIABLE!!! | |
1509 | ||
1510 | if ( (result = usbat_write_block(us, | |
1511 | USBAT_ATA, srb->cmnd, 12, | |
1512 | srb->cmnd[0]==GPCMD_BLANK ? 75 : 10)) != | |
1513 | USB_STOR_TRANSPORT_GOOD) { | |
1514 | return result; | |
1515 | } | |
1516 | ||
1517 | // If there is response data to be read in | |
1518 | // then do it here. | |
1519 | ||
1520 | if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) { | |
1521 | ||
1522 | // How many bytes to read in? Check cylL register | |
1523 | ||
1524 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1525 | USB_STOR_XFER_GOOD) { | |
1526 | return USB_STOR_TRANSPORT_ERROR; | |
1527 | } | |
1528 | ||
1529 | if (len > 0xFF) { // need to read cylH also | |
1530 | len = *status; | |
1531 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) != | |
1532 | USB_STOR_XFER_GOOD) { | |
1533 | return USB_STOR_TRANSPORT_ERROR; | |
1534 | } | |
1535 | len += ((unsigned int) *status)<<8; | |
1536 | } | |
1537 | else | |
1538 | len = *status; | |
1539 | ||
1540 | ||
1541 | result = usbat_read_block(us, srb->request_buffer, len); | |
1542 | ||
1543 | /* Debug-print the first 32 bytes of the transfer */ | |
1544 | ||
1545 | if (!srb->use_sg) { | |
1546 | string[0] = 0; | |
1547 | for (i=0; i<len && i<32; i++) { | |
1548 | sprintf(string+strlen(string), "%02X ", | |
1549 | ((unsigned char *)srb->request_buffer)[i]); | |
1550 | if ((i%16)==15) { | |
1551 | US_DEBUGP("%s\n", string); | |
1552 | string[0] = 0; | |
1553 | } | |
1554 | } | |
1555 | if (string[0]!=0) | |
1556 | US_DEBUGP("%s\n", string); | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | return result; | |
1561 | } | |
1562 | ||
1563 | /* | |
1564 | * Transport for USBAT02-based CompactFlash and similar storage devices | |
1565 | */ | |
1566 | static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us) | |
1567 | { | |
1568 | int rc; | |
1569 | struct usbat_info *info = (struct usbat_info *) (us->extra); | |
1570 | unsigned long block, blocks; | |
1571 | unsigned char *ptr = us->iobuf; | |
1572 | static unsigned char inquiry_response[36] = { | |
1573 | 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00 | |
1574 | }; | |
1575 | ||
1576 | if (srb->cmnd[0] == INQUIRY) { | |
1577 | US_DEBUGP("usbat_flash_transport: INQUIRY. Returning bogus response.\n"); | |
1578 | memcpy(ptr, inquiry_response, sizeof(inquiry_response)); | |
1579 | fill_inquiry_response(us, ptr, 36); | |
1580 | return USB_STOR_TRANSPORT_GOOD; | |
1581 | } | |
1582 | ||
1583 | if (srb->cmnd[0] == READ_CAPACITY) { | |
1584 | rc = usbat_flash_check_media(us, info); | |
1585 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1586 | return rc; | |
1587 | ||
1588 | rc = usbat_flash_get_sector_count(us, info); | |
1589 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1590 | return rc; | |
1591 | ||
1592 | info->ssize = 0x200; // hard coded 512 byte sectors as per ATA spec | |
1593 | US_DEBUGP("usbat_flash_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n", | |
1594 | info->sectors, info->ssize); | |
1595 | ||
1596 | // build the reply | |
1597 | // note: must return the sector number of the last sector, | |
1598 | // *not* the total number of sectors | |
1599 | ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1); | |
1600 | ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize); | |
1601 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
1602 | ||
1603 | return USB_STOR_TRANSPORT_GOOD; | |
1604 | } | |
1605 | ||
1606 | if (srb->cmnd[0] == MODE_SELECT_10) { | |
1607 | US_DEBUGP("usbat_flash_transport: Gah! MODE_SELECT_10.\n"); | |
1608 | return USB_STOR_TRANSPORT_ERROR; | |
1609 | } | |
1610 | ||
1611 | if (srb->cmnd[0] == READ_10) { | |
1612 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
1613 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1614 | ||
1615 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); | |
1616 | ||
1617 | US_DEBUGP("usbat_flash_transport: READ_10: read block 0x%04lx count %ld\n", block, blocks); | |
1618 | return usbat_flash_read_data(us, info, block, blocks); | |
1619 | } | |
1620 | ||
1621 | if (srb->cmnd[0] == READ_12) { | |
1622 | // I don't think we'll ever see a READ_12 but support it anyway... | |
1623 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
1624 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1625 | ||
1626 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | | |
1627 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); | |
1628 | ||
1629 | US_DEBUGP("usbat_flash_transport: READ_12: read block 0x%04lx count %ld\n", block, blocks); | |
1630 | return usbat_flash_read_data(us, info, block, blocks); | |
1631 | } | |
1632 | ||
1633 | if (srb->cmnd[0] == WRITE_10) { | |
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[7]) << 8) | ((u32)(srb->cmnd[8])); | |
1638 | ||
1639 | US_DEBUGP("usbat_flash_transport: WRITE_10: write block 0x%04lx count %ld\n", block, blocks); | |
1640 | return usbat_flash_write_data(us, info, block, blocks); | |
1641 | } | |
1642 | ||
1643 | if (srb->cmnd[0] == WRITE_12) { | |
1644 | // I don't think we'll ever see a WRITE_12 but support it anyway... | |
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[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | | |
1649 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); | |
1650 | ||
1651 | US_DEBUGP("usbat_flash_transport: WRITE_12: write block 0x%04lx count %ld\n", block, blocks); | |
1652 | return usbat_flash_write_data(us, info, block, blocks); | |
1653 | } | |
1654 | ||
1655 | ||
1656 | if (srb->cmnd[0] == TEST_UNIT_READY) { | |
1657 | US_DEBUGP("usbat_flash_transport: TEST_UNIT_READY.\n"); | |
1658 | ||
1659 | rc = usbat_flash_check_media(us, info); | |
1660 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1661 | return rc; | |
1662 | ||
1663 | return usbat_check_status(us); | |
1664 | } | |
1665 | ||
1666 | if (srb->cmnd[0] == REQUEST_SENSE) { | |
1667 | US_DEBUGP("usbat_flash_transport: REQUEST_SENSE.\n"); | |
1668 | ||
1669 | memset(ptr, 0, 18); | |
1670 | ptr[0] = 0xF0; | |
1671 | ptr[2] = info->sense_key; | |
1672 | ptr[7] = 11; | |
1673 | ptr[12] = info->sense_asc; | |
1674 | ptr[13] = info->sense_ascq; | |
1675 | usb_stor_set_xfer_buf(ptr, 18, srb); | |
1676 | ||
1677 | return USB_STOR_TRANSPORT_GOOD; | |
1678 | } | |
1679 | ||
1680 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { | |
1681 | // sure. whatever. not like we can stop the user from popping | |
1682 | // the media out of the device (no locking doors, etc) | |
1683 | return USB_STOR_TRANSPORT_GOOD; | |
1684 | } | |
1685 | ||
1686 | US_DEBUGP("usbat_flash_transport: Gah! Unknown command: %d (0x%x)\n", | |
1687 | srb->cmnd[0], srb->cmnd[0]); | |
1688 | info->sense_key = 0x05; | |
1689 | info->sense_asc = 0x20; | |
1690 | info->sense_ascq = 0x00; | |
1691 | return USB_STOR_TRANSPORT_FAILED; | |
1692 | } | |
1693 | ||
1694 | /* | |
1695 | * Default transport function. Attempts to detect which transport function | |
1696 | * should be called, makes it the new default, and calls it. | |
1697 | * | |
1698 | * This function should never be called. Our usbat_init() function detects the | |
1699 | * device type and changes the us->transport ptr to the transport function | |
1700 | * relevant to the device. | |
1701 | * However, we'll support this impossible(?) case anyway. | |
1702 | */ | |
1703 | int usbat_transport(struct scsi_cmnd *srb, struct us_data *us) | |
1704 | { | |
1705 | struct usbat_info *info = (struct usbat_info*) (us->extra); | |
1706 | ||
1707 | if (usbat_set_transport(us, info)) | |
1708 | return USB_STOR_TRANSPORT_ERROR; | |
1709 | ||
1710 | return us->transport(srb, us); | |
1711 | } | |
1712 |