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b7b1e655 | 1 | /* Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable |
1da177e4 LT |
2 | * |
3 | * Current development and maintenance by: | |
4 | * (c) 2000, 2001 Robert Baruch (autophile@starband.net) | |
5 | * (c) 2004, 2005 Daniel Drake <dsd@gentoo.org> | |
6 | * | |
7 | * Developed with the assistance of: | |
8 | * (c) 2002 Alan Stern <stern@rowland.org> | |
9 | * | |
10 | * Flash support based on earlier work by: | |
11 | * (c) 2002 Thomas Kreiling <usbdev@sm04.de> | |
12 | * | |
13 | * Many originally ATAPI devices were slightly modified to meet the USB | |
14 | * market by using some kind of translation from ATAPI to USB on the host, | |
15 | * and the peripheral would translate from USB back to ATAPI. | |
16 | * | |
17 | * SCM Microsystems (www.scmmicro.com) makes a device, sold to OEM's only, | |
18 | * which does the USB-to-ATAPI conversion. By obtaining the data sheet on | |
19 | * their device under nondisclosure agreement, I have been able to write | |
20 | * this driver for Linux. | |
21 | * | |
22 | * The chip used in the device can also be used for EPP and ISA translation | |
23 | * as well. This driver is only guaranteed to work with the ATAPI | |
24 | * translation. | |
25 | * | |
26 | * See the Kconfig help text for a list of devices known to be supported by | |
27 | * this driver. | |
28 | * | |
29 | * This program is free software; you can redistribute it and/or modify it | |
30 | * under the terms of the GNU General Public License as published by the | |
31 | * Free Software Foundation; either version 2, or (at your option) any | |
32 | * later version. | |
33 | * | |
34 | * This program is distributed in the hope that it will be useful, but | |
35 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
36 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
37 | * General Public License for more details. | |
38 | * | |
39 | * You should have received a copy of the GNU General Public License along | |
40 | * with this program; if not, write to the Free Software Foundation, Inc., | |
41 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
42 | */ | |
43 | ||
1da177e4 | 44 | #include <linux/errno.h> |
26d6818f | 45 | #include <linux/module.h> |
1da177e4 LT |
46 | #include <linux/slab.h> |
47 | #include <linux/cdrom.h> | |
48 | ||
49 | #include <scsi/scsi.h> | |
50 | #include <scsi/scsi_cmnd.h> | |
51 | ||
52 | #include "usb.h" | |
53 | #include "transport.h" | |
54 | #include "protocol.h" | |
55 | #include "debug.h" | |
26d6818f | 56 | |
4246b06a MG |
57 | MODULE_DESCRIPTION("Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable"); |
58 | MODULE_AUTHOR("Daniel Drake <dsd@gentoo.org>, Robert Baruch <autophile@starband.net>"); | |
59 | MODULE_LICENSE("GPL"); | |
26d6818f AS |
60 | |
61 | /* Supported device types */ | |
62 | #define USBAT_DEV_HP8200 0x01 | |
63 | #define USBAT_DEV_FLASH 0x02 | |
64 | ||
65 | #define USBAT_EPP_PORT 0x10 | |
66 | #define USBAT_EPP_REGISTER 0x30 | |
67 | #define USBAT_ATA 0x40 | |
68 | #define USBAT_ISA 0x50 | |
69 | ||
70 | /* Commands (need to be logically OR'd with an access type */ | |
71 | #define USBAT_CMD_READ_REG 0x00 | |
72 | #define USBAT_CMD_WRITE_REG 0x01 | |
73 | #define USBAT_CMD_READ_BLOCK 0x02 | |
74 | #define USBAT_CMD_WRITE_BLOCK 0x03 | |
75 | #define USBAT_CMD_COND_READ_BLOCK 0x04 | |
76 | #define USBAT_CMD_COND_WRITE_BLOCK 0x05 | |
77 | #define USBAT_CMD_WRITE_REGS 0x07 | |
78 | ||
79 | /* Commands (these don't need an access type) */ | |
80 | #define USBAT_CMD_EXEC_CMD 0x80 | |
81 | #define USBAT_CMD_SET_FEAT 0x81 | |
82 | #define USBAT_CMD_UIO 0x82 | |
83 | ||
84 | /* Methods of accessing UIO register */ | |
85 | #define USBAT_UIO_READ 1 | |
86 | #define USBAT_UIO_WRITE 0 | |
87 | ||
88 | /* Qualifier bits */ | |
89 | #define USBAT_QUAL_FCQ 0x20 /* full compare */ | |
90 | #define USBAT_QUAL_ALQ 0x10 /* auto load subcount */ | |
91 | ||
92 | /* USBAT Flash Media status types */ | |
93 | #define USBAT_FLASH_MEDIA_NONE 0 | |
94 | #define USBAT_FLASH_MEDIA_CF 1 | |
95 | ||
96 | /* USBAT Flash Media change types */ | |
97 | #define USBAT_FLASH_MEDIA_SAME 0 | |
98 | #define USBAT_FLASH_MEDIA_CHANGED 1 | |
99 | ||
100 | /* USBAT ATA registers */ | |
101 | #define USBAT_ATA_DATA 0x10 /* read/write data (R/W) */ | |
102 | #define USBAT_ATA_FEATURES 0x11 /* set features (W) */ | |
103 | #define USBAT_ATA_ERROR 0x11 /* error (R) */ | |
104 | #define USBAT_ATA_SECCNT 0x12 /* sector count (R/W) */ | |
105 | #define USBAT_ATA_SECNUM 0x13 /* sector number (R/W) */ | |
106 | #define USBAT_ATA_LBA_ME 0x14 /* cylinder low (R/W) */ | |
107 | #define USBAT_ATA_LBA_HI 0x15 /* cylinder high (R/W) */ | |
108 | #define USBAT_ATA_DEVICE 0x16 /* head/device selection (R/W) */ | |
109 | #define USBAT_ATA_STATUS 0x17 /* device status (R) */ | |
110 | #define USBAT_ATA_CMD 0x17 /* device command (W) */ | |
111 | #define USBAT_ATA_ALTSTATUS 0x0E /* status (no clear IRQ) (R) */ | |
112 | ||
113 | /* USBAT User I/O Data registers */ | |
114 | #define USBAT_UIO_EPAD 0x80 /* Enable Peripheral Control Signals */ | |
115 | #define USBAT_UIO_CDT 0x40 /* Card Detect (Read Only) */ | |
116 | /* CDT = ACKD & !UI1 & !UI0 */ | |
117 | #define USBAT_UIO_1 0x20 /* I/O 1 */ | |
118 | #define USBAT_UIO_0 0x10 /* I/O 0 */ | |
119 | #define USBAT_UIO_EPP_ATA 0x08 /* 1=EPP mode, 0=ATA mode */ | |
120 | #define USBAT_UIO_UI1 0x04 /* Input 1 */ | |
121 | #define USBAT_UIO_UI0 0x02 /* Input 0 */ | |
122 | #define USBAT_UIO_INTR_ACK 0x01 /* Interrupt (ATA/ISA)/Acknowledge (EPP) */ | |
123 | ||
124 | /* USBAT User I/O Enable registers */ | |
125 | #define USBAT_UIO_DRVRST 0x80 /* Reset Peripheral */ | |
126 | #define USBAT_UIO_ACKD 0x40 /* Enable Card Detect */ | |
127 | #define USBAT_UIO_OE1 0x20 /* I/O 1 set=output/clr=input */ | |
128 | /* If ACKD=1, set OE1 to 1 also. */ | |
129 | #define USBAT_UIO_OE0 0x10 /* I/O 0 set=output/clr=input */ | |
130 | #define USBAT_UIO_ADPRST 0x01 /* Reset SCM chip */ | |
131 | ||
132 | /* USBAT Features */ | |
133 | #define USBAT_FEAT_ETEN 0x80 /* External trigger enable */ | |
134 | #define USBAT_FEAT_U1 0x08 | |
135 | #define USBAT_FEAT_U0 0x04 | |
136 | #define USBAT_FEAT_ET1 0x02 | |
137 | #define USBAT_FEAT_ET2 0x01 | |
138 | ||
139 | struct usbat_info { | |
140 | int devicetype; | |
141 | ||
142 | /* Used for Flash readers only */ | |
143 | unsigned long sectors; /* total sector count */ | |
144 | unsigned long ssize; /* sector size in bytes */ | |
145 | ||
146 | unsigned char sense_key; | |
147 | unsigned long sense_asc; /* additional sense code */ | |
148 | unsigned long sense_ascq; /* additional sense code qualifier */ | |
149 | }; | |
1da177e4 LT |
150 | |
151 | #define short_pack(LSB,MSB) ( ((u16)(LSB)) | ( ((u16)(MSB))<<8 ) ) | |
152 | #define LSB_of(s) ((s)&0xFF) | |
153 | #define MSB_of(s) ((s)>>8) | |
154 | ||
155 | static int transferred = 0; | |
156 | ||
157 | static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us); | |
158 | static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us); | |
159 | ||
26d6818f AS |
160 | static int init_usbat_cd(struct us_data *us); |
161 | static int init_usbat_flash(struct us_data *us); | |
162 | ||
163 | ||
164 | /* | |
165 | * The table of devices | |
166 | */ | |
167 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ | |
168 | vendorName, productName, useProtocol, useTransport, \ | |
169 | initFunction, flags) \ | |
170 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ | |
171 | .driver_info = (flags)|(USB_US_TYPE_STOR<<24) } | |
172 | ||
173 | struct usb_device_id usbat_usb_ids[] = { | |
174 | # include "unusual_usbat.h" | |
175 | { } /* Terminating entry */ | |
176 | }; | |
177 | MODULE_DEVICE_TABLE(usb, usbat_usb_ids); | |
178 | ||
179 | #undef UNUSUAL_DEV | |
180 | ||
181 | /* | |
182 | * The flags table | |
183 | */ | |
184 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ | |
185 | vendor_name, product_name, use_protocol, use_transport, \ | |
186 | init_function, Flags) \ | |
187 | { \ | |
188 | .vendorName = vendor_name, \ | |
189 | .productName = product_name, \ | |
190 | .useProtocol = use_protocol, \ | |
191 | .useTransport = use_transport, \ | |
192 | .initFunction = init_function, \ | |
193 | } | |
194 | ||
195 | static struct us_unusual_dev usbat_unusual_dev_list[] = { | |
196 | # include "unusual_usbat.h" | |
197 | { } /* Terminating entry */ | |
198 | }; | |
199 | ||
200 | #undef UNUSUAL_DEV | |
201 | ||
1da177e4 | 202 | /* |
b7b1e655 | 203 | * Convenience function to produce an ATA read/write sectors command |
1da177e4 LT |
204 | * Use cmd=0x20 for read, cmd=0x30 for write |
205 | */ | |
b7b1e655 | 206 | static void usbat_pack_ata_sector_cmd(unsigned char *buf, |
1da177e4 LT |
207 | unsigned char thistime, |
208 | u32 sector, unsigned char cmd) | |
209 | { | |
210 | buf[0] = 0; | |
211 | buf[1] = thistime; | |
212 | buf[2] = sector & 0xFF; | |
213 | buf[3] = (sector >> 8) & 0xFF; | |
214 | buf[4] = (sector >> 16) & 0xFF; | |
215 | buf[5] = 0xE0 | ((sector >> 24) & 0x0F); | |
216 | buf[6] = cmd; | |
217 | } | |
218 | ||
219 | /* | |
220 | * Convenience function to get the device type (flash or hp8200) | |
221 | */ | |
222 | static int usbat_get_device_type(struct us_data *us) | |
223 | { | |
224 | return ((struct usbat_info*)us->extra)->devicetype; | |
225 | } | |
226 | ||
227 | /* | |
228 | * Read a register from the device | |
229 | */ | |
230 | static int usbat_read(struct us_data *us, | |
231 | unsigned char access, | |
232 | unsigned char reg, | |
233 | unsigned char *content) | |
234 | { | |
235 | return usb_stor_ctrl_transfer(us, | |
236 | us->recv_ctrl_pipe, | |
237 | access | USBAT_CMD_READ_REG, | |
238 | 0xC0, | |
239 | (u16)reg, | |
240 | 0, | |
241 | content, | |
242 | 1); | |
243 | } | |
244 | ||
245 | /* | |
246 | * Write to a register on the device | |
247 | */ | |
248 | static int usbat_write(struct us_data *us, | |
249 | unsigned char access, | |
250 | unsigned char reg, | |
251 | unsigned char content) | |
252 | { | |
253 | return usb_stor_ctrl_transfer(us, | |
254 | us->send_ctrl_pipe, | |
255 | access | USBAT_CMD_WRITE_REG, | |
256 | 0x40, | |
257 | short_pack(reg, content), | |
258 | 0, | |
259 | NULL, | |
260 | 0); | |
261 | } | |
262 | ||
263 | /* | |
264 | * Convenience function to perform a bulk read | |
265 | */ | |
266 | static int usbat_bulk_read(struct us_data *us, | |
4776e99e | 267 | void* buf, |
141804d4 PC |
268 | unsigned int len, |
269 | int use_sg) | |
1da177e4 LT |
270 | { |
271 | if (len == 0) | |
272 | return USB_STOR_XFER_GOOD; | |
273 | ||
274 | US_DEBUGP("usbat_bulk_read: len = %d\n", len); | |
4776e99e | 275 | return usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, buf, len, use_sg, NULL); |
1da177e4 LT |
276 | } |
277 | ||
278 | /* | |
279 | * Convenience function to perform a bulk write | |
280 | */ | |
281 | static int usbat_bulk_write(struct us_data *us, | |
4776e99e | 282 | void* buf, |
141804d4 PC |
283 | unsigned int len, |
284 | int use_sg) | |
1da177e4 LT |
285 | { |
286 | if (len == 0) | |
287 | return USB_STOR_XFER_GOOD; | |
288 | ||
289 | US_DEBUGP("usbat_bulk_write: len = %d\n", len); | |
4776e99e | 290 | return usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, buf, len, use_sg, NULL); |
1da177e4 LT |
291 | } |
292 | ||
293 | /* | |
294 | * Some USBAT-specific commands can only be executed over a command transport | |
295 | * This transport allows one (len=8) or two (len=16) vendor-specific commands | |
296 | * to be executed. | |
297 | */ | |
298 | static int usbat_execute_command(struct us_data *us, | |
299 | unsigned char *commands, | |
300 | unsigned int len) | |
301 | { | |
302 | return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, | |
303 | USBAT_CMD_EXEC_CMD, 0x40, 0, 0, | |
304 | commands, len); | |
305 | } | |
306 | ||
307 | /* | |
308 | * Read the status register | |
309 | */ | |
310 | static int usbat_get_status(struct us_data *us, unsigned char *status) | |
311 | { | |
312 | int rc; | |
313 | rc = usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status); | |
314 | ||
315 | US_DEBUGP("usbat_get_status: 0x%02X\n", (unsigned short) (*status)); | |
316 | return rc; | |
317 | } | |
318 | ||
319 | /* | |
320 | * Check the device status | |
321 | */ | |
322 | static int usbat_check_status(struct us_data *us) | |
323 | { | |
324 | unsigned char *reply = us->iobuf; | |
325 | int rc; | |
326 | ||
1da177e4 LT |
327 | rc = usbat_get_status(us, reply); |
328 | if (rc != USB_STOR_XFER_GOOD) | |
329 | return USB_STOR_TRANSPORT_FAILED; | |
330 | ||
b7b1e655 DD |
331 | /* error/check condition (0x51 is ok) */ |
332 | if (*reply & 0x01 && *reply != 0x51) | |
1da177e4 LT |
333 | return USB_STOR_TRANSPORT_FAILED; |
334 | ||
b7b1e655 DD |
335 | /* device fault */ |
336 | if (*reply & 0x20) | |
1da177e4 LT |
337 | return USB_STOR_TRANSPORT_FAILED; |
338 | ||
339 | return USB_STOR_TRANSPORT_GOOD; | |
340 | } | |
341 | ||
342 | /* | |
25985edc | 343 | * Stores critical information in internal registers in preparation for the execution |
1da177e4 LT |
344 | * of a conditional usbat_read_blocks or usbat_write_blocks call. |
345 | */ | |
346 | static int usbat_set_shuttle_features(struct us_data *us, | |
347 | unsigned char external_trigger, | |
348 | unsigned char epp_control, | |
349 | unsigned char mask_byte, | |
350 | unsigned char test_pattern, | |
351 | unsigned char subcountH, | |
352 | unsigned char subcountL) | |
353 | { | |
354 | unsigned char *command = us->iobuf; | |
355 | ||
356 | command[0] = 0x40; | |
357 | command[1] = USBAT_CMD_SET_FEAT; | |
358 | ||
b7b1e655 DD |
359 | /* |
360 | * The only bit relevant to ATA access is bit 6 | |
361 | * which defines 8 bit data access (set) or 16 bit (unset) | |
362 | */ | |
1da177e4 LT |
363 | command[2] = epp_control; |
364 | ||
b7b1e655 DD |
365 | /* |
366 | * If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1, | |
367 | * ET1 and ET2 define an external event to be checked for on event of a | |
368 | * _read_blocks or _write_blocks operation. The read/write will not take | |
369 | * place unless the defined trigger signal is active. | |
370 | */ | |
1da177e4 LT |
371 | command[3] = external_trigger; |
372 | ||
b7b1e655 DD |
373 | /* |
374 | * The resultant byte of the mask operation (see mask_byte) is compared for | |
375 | * equivalence with this test pattern. If equal, the read/write will take | |
376 | * place. | |
377 | */ | |
1da177e4 LT |
378 | command[4] = test_pattern; |
379 | ||
b7b1e655 DD |
380 | /* |
381 | * This value is logically ANDed with the status register field specified | |
382 | * in the read/write command. | |
383 | */ | |
1da177e4 LT |
384 | command[5] = mask_byte; |
385 | ||
b7b1e655 DD |
386 | /* |
387 | * If ALQ is set in the qualifier, this field contains the address of the | |
388 | * registers where the byte count should be read for transferring the data. | |
389 | * If ALQ is not set, then this field contains the number of bytes to be | |
390 | * transferred. | |
391 | */ | |
1da177e4 LT |
392 | command[6] = subcountL; |
393 | command[7] = subcountH; | |
394 | ||
395 | return usbat_execute_command(us, command, 8); | |
396 | } | |
397 | ||
398 | /* | |
399 | * Block, waiting for an ATA device to become not busy or to report | |
400 | * an error condition. | |
401 | */ | |
402 | static int usbat_wait_not_busy(struct us_data *us, int minutes) | |
403 | { | |
404 | int i; | |
405 | int result; | |
406 | unsigned char *status = us->iobuf; | |
407 | ||
408 | /* Synchronizing cache on a CDR could take a heck of a long time, | |
409 | * but probably not more than 10 minutes or so. On the other hand, | |
410 | * doing a full blank on a CDRW at speed 1 will take about 75 | |
411 | * minutes! | |
412 | */ | |
413 | ||
414 | for (i=0; i<1200+minutes*60; i++) { | |
415 | ||
416 | result = usbat_get_status(us, status); | |
417 | ||
418 | if (result!=USB_STOR_XFER_GOOD) | |
419 | return USB_STOR_TRANSPORT_ERROR; | |
b7b1e655 | 420 | if (*status & 0x01) { /* check condition */ |
1da177e4 LT |
421 | result = usbat_read(us, USBAT_ATA, 0x10, status); |
422 | return USB_STOR_TRANSPORT_FAILED; | |
423 | } | |
b7b1e655 | 424 | if (*status & 0x20) /* device fault */ |
1da177e4 LT |
425 | return USB_STOR_TRANSPORT_FAILED; |
426 | ||
b7b1e655 | 427 | if ((*status & 0x80)==0x00) { /* not busy */ |
1da177e4 LT |
428 | US_DEBUGP("Waited not busy for %d steps\n", i); |
429 | return USB_STOR_TRANSPORT_GOOD; | |
430 | } | |
431 | ||
432 | if (i<500) | |
b7b1e655 | 433 | msleep(10); /* 5 seconds */ |
1da177e4 | 434 | else if (i<700) |
b7b1e655 | 435 | msleep(50); /* 10 seconds */ |
1da177e4 | 436 | else if (i<1200) |
b7b1e655 | 437 | msleep(100); /* 50 seconds */ |
1da177e4 | 438 | else |
b7b1e655 | 439 | msleep(1000); /* X minutes */ |
1da177e4 LT |
440 | } |
441 | ||
442 | US_DEBUGP("Waited not busy for %d minutes, timing out.\n", | |
443 | minutes); | |
444 | return USB_STOR_TRANSPORT_FAILED; | |
445 | } | |
446 | ||
447 | /* | |
448 | * Read block data from the data register | |
449 | */ | |
450 | static int usbat_read_block(struct us_data *us, | |
4776e99e | 451 | void* buf, |
141804d4 PC |
452 | unsigned short len, |
453 | int use_sg) | |
1da177e4 LT |
454 | { |
455 | int result; | |
456 | unsigned char *command = us->iobuf; | |
457 | ||
458 | if (!len) | |
459 | return USB_STOR_TRANSPORT_GOOD; | |
460 | ||
461 | command[0] = 0xC0; | |
462 | command[1] = USBAT_ATA | USBAT_CMD_READ_BLOCK; | |
463 | command[2] = USBAT_ATA_DATA; | |
464 | command[3] = 0; | |
465 | command[4] = 0; | |
466 | command[5] = 0; | |
467 | command[6] = LSB_of(len); | |
468 | command[7] = MSB_of(len); | |
469 | ||
470 | result = usbat_execute_command(us, command, 8); | |
471 | if (result != USB_STOR_XFER_GOOD) | |
472 | return USB_STOR_TRANSPORT_ERROR; | |
473 | ||
4776e99e | 474 | result = usbat_bulk_read(us, buf, len, use_sg); |
1da177e4 LT |
475 | return (result == USB_STOR_XFER_GOOD ? |
476 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); | |
477 | } | |
478 | ||
479 | /* | |
480 | * Write block data via the data register | |
481 | */ | |
482 | static int usbat_write_block(struct us_data *us, | |
483 | unsigned char access, | |
4776e99e | 484 | void* buf, |
1da177e4 | 485 | unsigned short len, |
141804d4 PC |
486 | int minutes, |
487 | int use_sg) | |
1da177e4 LT |
488 | { |
489 | int result; | |
490 | unsigned char *command = us->iobuf; | |
491 | ||
492 | if (!len) | |
493 | return USB_STOR_TRANSPORT_GOOD; | |
494 | ||
495 | command[0] = 0x40; | |
496 | command[1] = access | USBAT_CMD_WRITE_BLOCK; | |
497 | command[2] = USBAT_ATA_DATA; | |
498 | command[3] = 0; | |
499 | command[4] = 0; | |
500 | command[5] = 0; | |
501 | command[6] = LSB_of(len); | |
502 | command[7] = MSB_of(len); | |
503 | ||
504 | result = usbat_execute_command(us, command, 8); | |
505 | ||
506 | if (result != USB_STOR_XFER_GOOD) | |
507 | return USB_STOR_TRANSPORT_ERROR; | |
508 | ||
4776e99e | 509 | result = usbat_bulk_write(us, buf, len, use_sg); |
1da177e4 LT |
510 | if (result != USB_STOR_XFER_GOOD) |
511 | return USB_STOR_TRANSPORT_ERROR; | |
512 | ||
513 | return usbat_wait_not_busy(us, minutes); | |
514 | } | |
515 | ||
516 | /* | |
517 | * Process read and write requests | |
518 | */ | |
519 | static int usbat_hp8200e_rw_block_test(struct us_data *us, | |
520 | unsigned char access, | |
521 | unsigned char *registers, | |
522 | unsigned char *data_out, | |
523 | unsigned short num_registers, | |
524 | unsigned char data_reg, | |
525 | unsigned char status_reg, | |
526 | unsigned char timeout, | |
527 | unsigned char qualifier, | |
528 | int direction, | |
4776e99e | 529 | void *buf, |
1da177e4 LT |
530 | unsigned short len, |
531 | int use_sg, | |
532 | int minutes) | |
533 | { | |
534 | int result; | |
535 | unsigned int pipe = (direction == DMA_FROM_DEVICE) ? | |
536 | us->recv_bulk_pipe : us->send_bulk_pipe; | |
537 | ||
538 | unsigned char *command = us->iobuf; | |
539 | int i, j; | |
540 | int cmdlen; | |
541 | unsigned char *data = us->iobuf; | |
542 | unsigned char *status = us->iobuf; | |
543 | ||
544 | BUG_ON(num_registers > US_IOBUF_SIZE/2); | |
545 | ||
546 | for (i=0; i<20; i++) { | |
547 | ||
548 | /* | |
549 | * The first time we send the full command, which consists | |
550 | * of downloading the SCSI command followed by downloading | |
551 | * the data via a write-and-test. Any other time we only | |
552 | * send the command to download the data -- the SCSI command | |
553 | * is still 'active' in some sense in the device. | |
554 | * | |
555 | * We're only going to try sending the data 10 times. After | |
556 | * that, we just return a failure. | |
557 | */ | |
558 | ||
559 | if (i==0) { | |
560 | cmdlen = 16; | |
b7b1e655 DD |
561 | /* |
562 | * Write to multiple registers | |
563 | * Not really sure the 0x07, 0x17, 0xfc, 0xe7 is | |
564 | * necessary here, but that's what came out of the | |
565 | * trace every single time. | |
566 | */ | |
1da177e4 LT |
567 | command[0] = 0x40; |
568 | command[1] = access | USBAT_CMD_WRITE_REGS; | |
569 | command[2] = 0x07; | |
570 | command[3] = 0x17; | |
571 | command[4] = 0xFC; | |
572 | command[5] = 0xE7; | |
573 | command[6] = LSB_of(num_registers*2); | |
574 | command[7] = MSB_of(num_registers*2); | |
575 | } else | |
576 | cmdlen = 8; | |
577 | ||
b7b1e655 | 578 | /* Conditionally read or write blocks */ |
1da177e4 LT |
579 | command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0); |
580 | command[cmdlen-7] = access | | |
581 | (direction==DMA_TO_DEVICE ? | |
582 | USBAT_CMD_COND_WRITE_BLOCK : USBAT_CMD_COND_READ_BLOCK); | |
583 | command[cmdlen-6] = data_reg; | |
584 | command[cmdlen-5] = status_reg; | |
585 | command[cmdlen-4] = timeout; | |
586 | command[cmdlen-3] = qualifier; | |
587 | command[cmdlen-2] = LSB_of(len); | |
588 | command[cmdlen-1] = MSB_of(len); | |
589 | ||
590 | result = usbat_execute_command(us, command, cmdlen); | |
591 | ||
592 | if (result != USB_STOR_XFER_GOOD) | |
593 | return USB_STOR_TRANSPORT_ERROR; | |
594 | ||
595 | if (i==0) { | |
596 | ||
597 | for (j=0; j<num_registers; j++) { | |
598 | data[j<<1] = registers[j]; | |
599 | data[1+(j<<1)] = data_out[j]; | |
600 | } | |
601 | ||
141804d4 | 602 | result = usbat_bulk_write(us, data, num_registers*2, 0); |
1da177e4 LT |
603 | if (result != USB_STOR_XFER_GOOD) |
604 | return USB_STOR_TRANSPORT_ERROR; | |
605 | ||
606 | } | |
607 | ||
1da177e4 | 608 | result = usb_stor_bulk_transfer_sg(us, |
4776e99e | 609 | pipe, buf, len, use_sg, NULL); |
1da177e4 LT |
610 | |
611 | /* | |
612 | * If we get a stall on the bulk download, we'll retry | |
613 | * the bulk download -- but not the SCSI command because | |
614 | * in some sense the SCSI command is still 'active' and | |
615 | * waiting for the data. Don't ask me why this should be; | |
616 | * I'm only following what the Windoze driver did. | |
617 | * | |
618 | * Note that a stall for the test-and-read/write command means | |
619 | * that the test failed. In this case we're testing to make | |
620 | * sure that the device is error-free | |
621 | * (i.e. bit 0 -- CHK -- of status is 0). The most likely | |
622 | * hypothesis is that the USBAT chip somehow knows what | |
623 | * the device will accept, but doesn't give the device any | |
624 | * data until all data is received. Thus, the device would | |
625 | * still be waiting for the first byte of data if a stall | |
626 | * occurs, even if the stall implies that some data was | |
627 | * transferred. | |
628 | */ | |
629 | ||
630 | if (result == USB_STOR_XFER_SHORT || | |
631 | result == USB_STOR_XFER_STALLED) { | |
632 | ||
633 | /* | |
634 | * If we're reading and we stalled, then clear | |
635 | * the bulk output pipe only the first time. | |
636 | */ | |
637 | ||
638 | if (direction==DMA_FROM_DEVICE && i==0) { | |
639 | if (usb_stor_clear_halt(us, | |
640 | us->send_bulk_pipe) < 0) | |
641 | return USB_STOR_TRANSPORT_ERROR; | |
642 | } | |
643 | ||
644 | /* | |
645 | * Read status: is the device angry, or just busy? | |
646 | */ | |
647 | ||
648 | result = usbat_read(us, USBAT_ATA, | |
649 | direction==DMA_TO_DEVICE ? | |
650 | USBAT_ATA_STATUS : USBAT_ATA_ALTSTATUS, | |
651 | status); | |
652 | ||
653 | if (result!=USB_STOR_XFER_GOOD) | |
654 | return USB_STOR_TRANSPORT_ERROR; | |
b7b1e655 | 655 | if (*status & 0x01) /* check condition */ |
1da177e4 | 656 | return USB_STOR_TRANSPORT_FAILED; |
b7b1e655 | 657 | if (*status & 0x20) /* device fault */ |
1da177e4 LT |
658 | return USB_STOR_TRANSPORT_FAILED; |
659 | ||
660 | US_DEBUGP("Redoing %s\n", | |
661 | direction==DMA_TO_DEVICE ? "write" : "read"); | |
662 | ||
663 | } else if (result != USB_STOR_XFER_GOOD) | |
664 | return USB_STOR_TRANSPORT_ERROR; | |
665 | else | |
666 | return usbat_wait_not_busy(us, minutes); | |
667 | ||
668 | } | |
669 | ||
670 | US_DEBUGP("Bummer! %s bulk data 20 times failed.\n", | |
671 | direction==DMA_TO_DEVICE ? "Writing" : "Reading"); | |
672 | ||
673 | return USB_STOR_TRANSPORT_FAILED; | |
674 | } | |
675 | ||
676 | /* | |
677 | * Write to multiple registers: | |
678 | * Allows us to write specific data to any registers. The data to be written | |
679 | * gets packed in this sequence: reg0, data0, reg1, data1, ..., regN, dataN | |
680 | * which gets sent through bulk out. | |
681 | * Not designed for large transfers of data! | |
682 | */ | |
683 | static int usbat_multiple_write(struct us_data *us, | |
684 | unsigned char *registers, | |
685 | unsigned char *data_out, | |
686 | unsigned short num_registers) | |
687 | { | |
688 | int i, result; | |
689 | unsigned char *data = us->iobuf; | |
690 | unsigned char *command = us->iobuf; | |
691 | ||
692 | BUG_ON(num_registers > US_IOBUF_SIZE/2); | |
693 | ||
b7b1e655 | 694 | /* Write to multiple registers, ATA access */ |
1da177e4 LT |
695 | command[0] = 0x40; |
696 | command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS; | |
697 | ||
b7b1e655 | 698 | /* No relevance */ |
1da177e4 LT |
699 | command[2] = 0; |
700 | command[3] = 0; | |
701 | command[4] = 0; | |
702 | command[5] = 0; | |
703 | ||
b7b1e655 | 704 | /* Number of bytes to be transferred (incl. addresses and data) */ |
1da177e4 LT |
705 | command[6] = LSB_of(num_registers*2); |
706 | command[7] = MSB_of(num_registers*2); | |
707 | ||
b7b1e655 | 708 | /* The setup command */ |
1da177e4 LT |
709 | result = usbat_execute_command(us, command, 8); |
710 | if (result != USB_STOR_XFER_GOOD) | |
711 | return USB_STOR_TRANSPORT_ERROR; | |
712 | ||
b7b1e655 | 713 | /* Create the reg/data, reg/data sequence */ |
1da177e4 LT |
714 | for (i=0; i<num_registers; i++) { |
715 | data[i<<1] = registers[i]; | |
716 | data[1+(i<<1)] = data_out[i]; | |
717 | } | |
718 | ||
b7b1e655 | 719 | /* Send the data */ |
141804d4 | 720 | result = usbat_bulk_write(us, data, num_registers*2, 0); |
1da177e4 LT |
721 | if (result != USB_STOR_XFER_GOOD) |
722 | return USB_STOR_TRANSPORT_ERROR; | |
723 | ||
724 | if (usbat_get_device_type(us) == USBAT_DEV_HP8200) | |
725 | return usbat_wait_not_busy(us, 0); | |
726 | else | |
727 | return USB_STOR_TRANSPORT_GOOD; | |
728 | } | |
729 | ||
730 | /* | |
731 | * Conditionally read blocks from device: | |
732 | * Allows us to read blocks from a specific data register, based upon the | |
733 | * condition that a status register can be successfully masked with a status | |
734 | * qualifier. If this condition is not initially met, the read will wait | |
735 | * up until a maximum amount of time has elapsed, as specified by timeout. | |
736 | * The read will start when the condition is met, otherwise the command aborts. | |
737 | * | |
738 | * The qualifier defined here is not the value that is masked, it defines | |
739 | * conditions for the write to take place. The actual masked qualifier (and | |
740 | * other related details) are defined beforehand with _set_shuttle_features(). | |
741 | */ | |
742 | static int usbat_read_blocks(struct us_data *us, | |
4776e99e | 743 | void* buffer, |
141804d4 PC |
744 | int len, |
745 | int use_sg) | |
1da177e4 LT |
746 | { |
747 | int result; | |
748 | unsigned char *command = us->iobuf; | |
749 | ||
750 | command[0] = 0xC0; | |
751 | command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK; | |
752 | command[2] = USBAT_ATA_DATA; | |
753 | command[3] = USBAT_ATA_STATUS; | |
b7b1e655 | 754 | command[4] = 0xFD; /* Timeout (ms); */ |
1da177e4 LT |
755 | command[5] = USBAT_QUAL_FCQ; |
756 | command[6] = LSB_of(len); | |
757 | command[7] = MSB_of(len); | |
758 | ||
b7b1e655 | 759 | /* Multiple block read setup command */ |
1da177e4 LT |
760 | result = usbat_execute_command(us, command, 8); |
761 | if (result != USB_STOR_XFER_GOOD) | |
762 | return USB_STOR_TRANSPORT_FAILED; | |
763 | ||
b7b1e655 | 764 | /* Read the blocks we just asked for */ |
141804d4 | 765 | result = usbat_bulk_read(us, buffer, len, use_sg); |
1da177e4 LT |
766 | if (result != USB_STOR_XFER_GOOD) |
767 | return USB_STOR_TRANSPORT_FAILED; | |
768 | ||
769 | return USB_STOR_TRANSPORT_GOOD; | |
770 | } | |
771 | ||
772 | /* | |
773 | * Conditionally write blocks to device: | |
774 | * Allows us to write blocks to a specific data register, based upon the | |
775 | * condition that a status register can be successfully masked with a status | |
776 | * qualifier. If this condition is not initially met, the write will wait | |
777 | * up until a maximum amount of time has elapsed, as specified by timeout. | |
778 | * The read will start when the condition is met, otherwise the command aborts. | |
779 | * | |
780 | * The qualifier defined here is not the value that is masked, it defines | |
781 | * conditions for the write to take place. The actual masked qualifier (and | |
782 | * other related details) are defined beforehand with _set_shuttle_features(). | |
783 | */ | |
784 | static int usbat_write_blocks(struct us_data *us, | |
4776e99e | 785 | void* buffer, |
141804d4 PC |
786 | int len, |
787 | int use_sg) | |
1da177e4 LT |
788 | { |
789 | int result; | |
790 | unsigned char *command = us->iobuf; | |
791 | ||
792 | command[0] = 0x40; | |
793 | command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK; | |
794 | command[2] = USBAT_ATA_DATA; | |
795 | command[3] = USBAT_ATA_STATUS; | |
b7b1e655 | 796 | command[4] = 0xFD; /* Timeout (ms) */ |
1da177e4 LT |
797 | command[5] = USBAT_QUAL_FCQ; |
798 | command[6] = LSB_of(len); | |
799 | command[7] = MSB_of(len); | |
800 | ||
b7b1e655 | 801 | /* Multiple block write setup command */ |
1da177e4 LT |
802 | result = usbat_execute_command(us, command, 8); |
803 | if (result != USB_STOR_XFER_GOOD) | |
804 | return USB_STOR_TRANSPORT_FAILED; | |
805 | ||
b7b1e655 | 806 | /* Write the data */ |
141804d4 | 807 | result = usbat_bulk_write(us, buffer, len, use_sg); |
1da177e4 LT |
808 | if (result != USB_STOR_XFER_GOOD) |
809 | return USB_STOR_TRANSPORT_FAILED; | |
810 | ||
811 | return USB_STOR_TRANSPORT_GOOD; | |
812 | } | |
813 | ||
814 | /* | |
815 | * Read the User IO register | |
816 | */ | |
817 | static int usbat_read_user_io(struct us_data *us, unsigned char *data_flags) | |
818 | { | |
819 | int result; | |
820 | ||
821 | result = usb_stor_ctrl_transfer(us, | |
822 | us->recv_ctrl_pipe, | |
823 | USBAT_CMD_UIO, | |
824 | 0xC0, | |
825 | 0, | |
826 | 0, | |
827 | data_flags, | |
828 | USBAT_UIO_READ); | |
829 | ||
830 | US_DEBUGP("usbat_read_user_io: UIO register reads %02X\n", (unsigned short) (*data_flags)); | |
831 | ||
832 | return result; | |
833 | } | |
834 | ||
835 | /* | |
836 | * Write to the User IO register | |
837 | */ | |
838 | static int usbat_write_user_io(struct us_data *us, | |
839 | unsigned char enable_flags, | |
840 | unsigned char data_flags) | |
841 | { | |
842 | return usb_stor_ctrl_transfer(us, | |
843 | us->send_ctrl_pipe, | |
844 | USBAT_CMD_UIO, | |
845 | 0x40, | |
846 | short_pack(enable_flags, data_flags), | |
847 | 0, | |
848 | NULL, | |
849 | USBAT_UIO_WRITE); | |
850 | } | |
851 | ||
852 | /* | |
853 | * Reset the device | |
854 | * Often needed on media change. | |
855 | */ | |
856 | static int usbat_device_reset(struct us_data *us) | |
857 | { | |
858 | int rc; | |
859 | ||
b7b1e655 DD |
860 | /* |
861 | * Reset peripheral, enable peripheral control signals | |
862 | * (bring reset signal up) | |
863 | */ | |
1da177e4 LT |
864 | rc = usbat_write_user_io(us, |
865 | USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
866 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
867 | if (rc != USB_STOR_XFER_GOOD) | |
868 | return USB_STOR_TRANSPORT_ERROR; | |
869 | ||
b7b1e655 DD |
870 | /* |
871 | * Enable peripheral control signals | |
872 | * (bring reset signal down) | |
873 | */ | |
1da177e4 LT |
874 | rc = usbat_write_user_io(us, |
875 | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
876 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
877 | if (rc != USB_STOR_XFER_GOOD) | |
878 | return USB_STOR_TRANSPORT_ERROR; | |
879 | ||
880 | return USB_STOR_TRANSPORT_GOOD; | |
881 | } | |
882 | ||
883 | /* | |
884 | * Enable card detect | |
885 | */ | |
886 | static int usbat_device_enable_cdt(struct us_data *us) | |
887 | { | |
888 | int rc; | |
889 | ||
b7b1e655 | 890 | /* Enable peripheral control signals and card detect */ |
1da177e4 LT |
891 | rc = usbat_write_user_io(us, |
892 | USBAT_UIO_ACKD | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
893 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
894 | if (rc != USB_STOR_XFER_GOOD) | |
895 | return USB_STOR_TRANSPORT_ERROR; | |
896 | ||
897 | return USB_STOR_TRANSPORT_GOOD; | |
898 | } | |
899 | ||
900 | /* | |
901 | * Determine if media is present. | |
902 | */ | |
903 | static int usbat_flash_check_media_present(unsigned char *uio) | |
904 | { | |
905 | if (*uio & USBAT_UIO_UI0) { | |
906 | US_DEBUGP("usbat_flash_check_media_present: no media detected\n"); | |
907 | return USBAT_FLASH_MEDIA_NONE; | |
908 | } | |
909 | ||
910 | return USBAT_FLASH_MEDIA_CF; | |
911 | } | |
912 | ||
913 | /* | |
914 | * Determine if media has changed since last operation | |
915 | */ | |
916 | static int usbat_flash_check_media_changed(unsigned char *uio) | |
917 | { | |
918 | if (*uio & USBAT_UIO_0) { | |
919 | US_DEBUGP("usbat_flash_check_media_changed: media change detected\n"); | |
920 | return USBAT_FLASH_MEDIA_CHANGED; | |
921 | } | |
922 | ||
923 | return USBAT_FLASH_MEDIA_SAME; | |
924 | } | |
925 | ||
926 | /* | |
927 | * Check for media change / no media and handle the situation appropriately | |
928 | */ | |
929 | static int usbat_flash_check_media(struct us_data *us, | |
930 | struct usbat_info *info) | |
931 | { | |
932 | int rc; | |
933 | unsigned char *uio = us->iobuf; | |
934 | ||
935 | rc = usbat_read_user_io(us, uio); | |
936 | if (rc != USB_STOR_XFER_GOOD) | |
937 | return USB_STOR_TRANSPORT_ERROR; | |
938 | ||
b7b1e655 | 939 | /* Check for media existence */ |
1da177e4 LT |
940 | rc = usbat_flash_check_media_present(uio); |
941 | if (rc == USBAT_FLASH_MEDIA_NONE) { | |
942 | info->sense_key = 0x02; | |
943 | info->sense_asc = 0x3A; | |
944 | info->sense_ascq = 0x00; | |
945 | return USB_STOR_TRANSPORT_FAILED; | |
946 | } | |
947 | ||
b7b1e655 | 948 | /* Check for media change */ |
1da177e4 LT |
949 | rc = usbat_flash_check_media_changed(uio); |
950 | if (rc == USBAT_FLASH_MEDIA_CHANGED) { | |
951 | ||
b7b1e655 | 952 | /* Reset and re-enable card detect */ |
1da177e4 LT |
953 | rc = usbat_device_reset(us); |
954 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
955 | return rc; | |
956 | rc = usbat_device_enable_cdt(us); | |
957 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
958 | return rc; | |
959 | ||
960 | msleep(50); | |
961 | ||
962 | rc = usbat_read_user_io(us, uio); | |
963 | if (rc != USB_STOR_XFER_GOOD) | |
964 | return USB_STOR_TRANSPORT_ERROR; | |
965 | ||
966 | info->sense_key = UNIT_ATTENTION; | |
967 | info->sense_asc = 0x28; | |
968 | info->sense_ascq = 0x00; | |
969 | return USB_STOR_TRANSPORT_FAILED; | |
970 | } | |
971 | ||
972 | return USB_STOR_TRANSPORT_GOOD; | |
973 | } | |
974 | ||
975 | /* | |
976 | * Determine whether we are controlling a flash-based reader/writer, | |
977 | * or a HP8200-based CD drive. | |
978 | * Sets transport functions as appropriate. | |
979 | */ | |
980 | static int usbat_identify_device(struct us_data *us, | |
981 | struct usbat_info *info) | |
982 | { | |
983 | int rc; | |
984 | unsigned char status; | |
985 | ||
986 | if (!us || !info) | |
987 | return USB_STOR_TRANSPORT_ERROR; | |
988 | ||
989 | rc = usbat_device_reset(us); | |
990 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
991 | return rc; | |
8845add3 | 992 | msleep(500); |
1da177e4 LT |
993 | |
994 | /* | |
68a6457e DD |
995 | * In attempt to distinguish between HP CDRW's and Flash readers, we now |
996 | * execute the IDENTIFY PACKET DEVICE command. On ATA devices (i.e. flash | |
997 | * readers), this command should fail with error. On ATAPI devices (i.e. | |
998 | * CDROM drives), it should succeed. | |
1da177e4 | 999 | */ |
68a6457e DD |
1000 | rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1); |
1001 | if (rc != USB_STOR_XFER_GOOD) | |
1002 | return USB_STOR_TRANSPORT_ERROR; | |
1da177e4 | 1003 | |
68a6457e DD |
1004 | rc = usbat_get_status(us, &status); |
1005 | if (rc != USB_STOR_XFER_GOOD) | |
1006 | return USB_STOR_TRANSPORT_ERROR; | |
1da177e4 | 1007 | |
b7b1e655 | 1008 | /* Check for error bit, or if the command 'fell through' */ |
a8798533 | 1009 | if (status == 0xA1 || !(status & 0x01)) { |
b7b1e655 | 1010 | /* Device is HP 8200 */ |
1da177e4 LT |
1011 | US_DEBUGP("usbat_identify_device: Detected HP8200 CDRW\n"); |
1012 | info->devicetype = USBAT_DEV_HP8200; | |
a8798533 | 1013 | } else { |
b7b1e655 | 1014 | /* Device is a CompactFlash reader/writer */ |
a8798533 DD |
1015 | US_DEBUGP("usbat_identify_device: Detected Flash reader/writer\n"); |
1016 | info->devicetype = USBAT_DEV_FLASH; | |
1da177e4 LT |
1017 | } |
1018 | ||
1019 | return USB_STOR_TRANSPORT_GOOD; | |
1020 | } | |
1021 | ||
1022 | /* | |
1023 | * Set the transport function based on the device type | |
1024 | */ | |
1025 | static int usbat_set_transport(struct us_data *us, | |
bdcfd9e3 PC |
1026 | struct usbat_info *info, |
1027 | int devicetype) | |
1da177e4 | 1028 | { |
1da177e4 | 1029 | |
bdcfd9e3 PC |
1030 | if (!info->devicetype) |
1031 | info->devicetype = devicetype; | |
1da177e4 | 1032 | |
bdcfd9e3 PC |
1033 | if (!info->devicetype) |
1034 | usbat_identify_device(us, info); | |
1035 | ||
1036 | switch (info->devicetype) { | |
1037 | default: | |
1038 | return USB_STOR_TRANSPORT_ERROR; | |
1039 | ||
1040 | case USBAT_DEV_HP8200: | |
1da177e4 | 1041 | us->transport = usbat_hp8200e_transport; |
bdcfd9e3 PC |
1042 | break; |
1043 | ||
1044 | case USBAT_DEV_FLASH: | |
1da177e4 | 1045 | us->transport = usbat_flash_transport; |
bdcfd9e3 PC |
1046 | break; |
1047 | } | |
1da177e4 LT |
1048 | |
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | /* | |
1053 | * Read the media capacity | |
1054 | */ | |
1055 | static int usbat_flash_get_sector_count(struct us_data *us, | |
1056 | struct usbat_info *info) | |
1057 | { | |
1058 | unsigned char registers[3] = { | |
1059 | USBAT_ATA_SECCNT, | |
1060 | USBAT_ATA_DEVICE, | |
1061 | USBAT_ATA_CMD, | |
1062 | }; | |
1063 | unsigned char command[3] = { 0x01, 0xA0, 0xEC }; | |
1064 | unsigned char *reply; | |
1065 | unsigned char status; | |
1066 | int rc; | |
1067 | ||
1068 | if (!us || !info) | |
1069 | return USB_STOR_TRANSPORT_ERROR; | |
1070 | ||
1071 | reply = kmalloc(512, GFP_NOIO); | |
1072 | if (!reply) | |
1073 | return USB_STOR_TRANSPORT_ERROR; | |
1074 | ||
b7b1e655 | 1075 | /* ATA command : IDENTIFY DEVICE */ |
1da177e4 LT |
1076 | rc = usbat_multiple_write(us, registers, command, 3); |
1077 | if (rc != USB_STOR_XFER_GOOD) { | |
1078 | US_DEBUGP("usbat_flash_get_sector_count: Gah! identify_device failed\n"); | |
1079 | rc = USB_STOR_TRANSPORT_ERROR; | |
1080 | goto leave; | |
1081 | } | |
1082 | ||
b7b1e655 | 1083 | /* Read device status */ |
1da177e4 LT |
1084 | if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) { |
1085 | rc = USB_STOR_TRANSPORT_ERROR; | |
1086 | goto leave; | |
1087 | } | |
1088 | ||
1089 | msleep(100); | |
1090 | ||
b7b1e655 | 1091 | /* Read the device identification data */ |
141804d4 | 1092 | rc = usbat_read_block(us, reply, 512, 0); |
1da177e4 LT |
1093 | if (rc != USB_STOR_TRANSPORT_GOOD) |
1094 | goto leave; | |
1095 | ||
1096 | info->sectors = ((u32)(reply[117]) << 24) | | |
1097 | ((u32)(reply[116]) << 16) | | |
1098 | ((u32)(reply[115]) << 8) | | |
1099 | ((u32)(reply[114]) ); | |
1100 | ||
1101 | rc = USB_STOR_TRANSPORT_GOOD; | |
1102 | ||
1103 | leave: | |
1104 | kfree(reply); | |
1105 | return rc; | |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * Read data from device | |
1110 | */ | |
1111 | static int usbat_flash_read_data(struct us_data *us, | |
1112 | struct usbat_info *info, | |
1113 | u32 sector, | |
1114 | u32 sectors) | |
1115 | { | |
1116 | unsigned char registers[7] = { | |
1117 | USBAT_ATA_FEATURES, | |
1118 | USBAT_ATA_SECCNT, | |
1119 | USBAT_ATA_SECNUM, | |
1120 | USBAT_ATA_LBA_ME, | |
1121 | USBAT_ATA_LBA_HI, | |
1122 | USBAT_ATA_DEVICE, | |
1123 | USBAT_ATA_STATUS, | |
1124 | }; | |
1125 | unsigned char command[7]; | |
1126 | unsigned char *buffer; | |
1127 | unsigned char thistime; | |
1128 | unsigned int totallen, alloclen; | |
1129 | int len, result; | |
1f6f31a0 JA |
1130 | unsigned int sg_offset = 0; |
1131 | struct scatterlist *sg = NULL; | |
1da177e4 LT |
1132 | |
1133 | result = usbat_flash_check_media(us, info); | |
1134 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1135 | return result; | |
1136 | ||
b7b1e655 DD |
1137 | /* |
1138 | * we're working in LBA mode. according to the ATA spec, | |
1139 | * we can support up to 28-bit addressing. I don't know if Jumpshot | |
1140 | * supports beyond 24-bit addressing. It's kind of hard to test | |
1141 | * since it requires > 8GB CF card. | |
1142 | */ | |
1da177e4 LT |
1143 | |
1144 | if (sector > 0x0FFFFFFF) | |
1145 | return USB_STOR_TRANSPORT_ERROR; | |
1146 | ||
1147 | totallen = sectors * info->ssize; | |
1148 | ||
b7b1e655 DD |
1149 | /* |
1150 | * Since we don't read more than 64 KB at a time, we have to create | |
1151 | * a bounce buffer and move the data a piece at a time between the | |
1152 | * bounce buffer and the actual transfer buffer. | |
1153 | */ | |
1da177e4 LT |
1154 | |
1155 | alloclen = min(totallen, 65536u); | |
1156 | buffer = kmalloc(alloclen, GFP_NOIO); | |
1157 | if (buffer == NULL) | |
1158 | return USB_STOR_TRANSPORT_ERROR; | |
1159 | ||
1160 | do { | |
b7b1e655 DD |
1161 | /* |
1162 | * loop, never allocate or transfer more than 64k at once | |
1163 | * (min(128k, 255*info->ssize) is the real limit) | |
1164 | */ | |
1da177e4 LT |
1165 | len = min(totallen, alloclen); |
1166 | thistime = (len / info->ssize) & 0xff; | |
1167 | ||
b7b1e655 DD |
1168 | /* ATA command 0x20 (READ SECTORS) */ |
1169 | usbat_pack_ata_sector_cmd(command, thistime, sector, 0x20); | |
1da177e4 | 1170 | |
b7b1e655 | 1171 | /* Write/execute ATA read command */ |
1da177e4 LT |
1172 | result = usbat_multiple_write(us, registers, command, 7); |
1173 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1174 | goto leave; | |
1175 | ||
b7b1e655 | 1176 | /* Read the data we just requested */ |
141804d4 | 1177 | result = usbat_read_blocks(us, buffer, len, 0); |
1da177e4 LT |
1178 | if (result != USB_STOR_TRANSPORT_GOOD) |
1179 | goto leave; | |
1180 | ||
1181 | US_DEBUGP("usbat_flash_read_data: %d bytes\n", len); | |
1182 | ||
b7b1e655 | 1183 | /* Store the data in the transfer buffer */ |
1da177e4 | 1184 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
1f6f31a0 | 1185 | &sg, &sg_offset, TO_XFER_BUF); |
1da177e4 LT |
1186 | |
1187 | sector += thistime; | |
1188 | totallen -= len; | |
1189 | } while (totallen > 0); | |
1190 | ||
1191 | kfree(buffer); | |
1192 | return USB_STOR_TRANSPORT_GOOD; | |
1193 | ||
1194 | leave: | |
1195 | kfree(buffer); | |
1196 | return USB_STOR_TRANSPORT_ERROR; | |
1197 | } | |
1198 | ||
1199 | /* | |
1200 | * Write data to device | |
1201 | */ | |
1202 | static int usbat_flash_write_data(struct us_data *us, | |
1203 | struct usbat_info *info, | |
1204 | u32 sector, | |
1205 | u32 sectors) | |
1206 | { | |
1207 | unsigned char registers[7] = { | |
1208 | USBAT_ATA_FEATURES, | |
1209 | USBAT_ATA_SECCNT, | |
1210 | USBAT_ATA_SECNUM, | |
1211 | USBAT_ATA_LBA_ME, | |
1212 | USBAT_ATA_LBA_HI, | |
1213 | USBAT_ATA_DEVICE, | |
1214 | USBAT_ATA_STATUS, | |
1215 | }; | |
1216 | unsigned char command[7]; | |
1217 | unsigned char *buffer; | |
1218 | unsigned char thistime; | |
1219 | unsigned int totallen, alloclen; | |
1220 | int len, result; | |
1f6f31a0 JA |
1221 | unsigned int sg_offset = 0; |
1222 | struct scatterlist *sg = NULL; | |
1da177e4 LT |
1223 | |
1224 | result = usbat_flash_check_media(us, info); | |
1225 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1226 | return result; | |
1227 | ||
b7b1e655 DD |
1228 | /* |
1229 | * we're working in LBA mode. according to the ATA spec, | |
1230 | * we can support up to 28-bit addressing. I don't know if the device | |
1231 | * supports beyond 24-bit addressing. It's kind of hard to test | |
1232 | * since it requires > 8GB media. | |
1233 | */ | |
1da177e4 LT |
1234 | |
1235 | if (sector > 0x0FFFFFFF) | |
1236 | return USB_STOR_TRANSPORT_ERROR; | |
1237 | ||
1238 | totallen = sectors * info->ssize; | |
1239 | ||
b7b1e655 DD |
1240 | /* |
1241 | * Since we don't write more than 64 KB at a time, we have to create | |
1242 | * a bounce buffer and move the data a piece at a time between the | |
1243 | * bounce buffer and the actual transfer buffer. | |
1244 | */ | |
1da177e4 LT |
1245 | |
1246 | alloclen = min(totallen, 65536u); | |
1247 | buffer = kmalloc(alloclen, GFP_NOIO); | |
1248 | if (buffer == NULL) | |
1249 | return USB_STOR_TRANSPORT_ERROR; | |
1250 | ||
1251 | do { | |
b7b1e655 DD |
1252 | /* |
1253 | * loop, never allocate or transfer more than 64k at once | |
1254 | * (min(128k, 255*info->ssize) is the real limit) | |
1255 | */ | |
1da177e4 LT |
1256 | len = min(totallen, alloclen); |
1257 | thistime = (len / info->ssize) & 0xff; | |
1258 | ||
b7b1e655 | 1259 | /* Get the data from the transfer buffer */ |
1da177e4 | 1260 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
1f6f31a0 | 1261 | &sg, &sg_offset, FROM_XFER_BUF); |
1da177e4 | 1262 | |
b7b1e655 DD |
1263 | /* ATA command 0x30 (WRITE SECTORS) */ |
1264 | usbat_pack_ata_sector_cmd(command, thistime, sector, 0x30); | |
1da177e4 | 1265 | |
b7b1e655 | 1266 | /* Write/execute ATA write command */ |
1da177e4 LT |
1267 | result = usbat_multiple_write(us, registers, command, 7); |
1268 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1269 | goto leave; | |
1270 | ||
b7b1e655 | 1271 | /* Write the data */ |
141804d4 | 1272 | result = usbat_write_blocks(us, buffer, len, 0); |
1da177e4 LT |
1273 | if (result != USB_STOR_TRANSPORT_GOOD) |
1274 | goto leave; | |
1275 | ||
1276 | sector += thistime; | |
1277 | totallen -= len; | |
1278 | } while (totallen > 0); | |
1279 | ||
1280 | kfree(buffer); | |
1281 | return result; | |
1282 | ||
1283 | leave: | |
1284 | kfree(buffer); | |
1285 | return USB_STOR_TRANSPORT_ERROR; | |
1286 | } | |
1287 | ||
1288 | /* | |
1289 | * Squeeze a potentially huge (> 65535 byte) read10 command into | |
1290 | * a little ( <= 65535 byte) ATAPI pipe | |
1291 | */ | |
1292 | static int usbat_hp8200e_handle_read10(struct us_data *us, | |
1293 | unsigned char *registers, | |
1294 | unsigned char *data, | |
1295 | struct scsi_cmnd *srb) | |
1296 | { | |
1297 | int result = USB_STOR_TRANSPORT_GOOD; | |
1298 | unsigned char *buffer; | |
1299 | unsigned int len; | |
1300 | unsigned int sector; | |
1da177e4 | 1301 | unsigned int sg_offset = 0; |
1f6f31a0 | 1302 | struct scatterlist *sg = NULL; |
1da177e4 LT |
1303 | |
1304 | US_DEBUGP("handle_read10: transfersize %d\n", | |
1305 | srb->transfersize); | |
1306 | ||
4776e99e | 1307 | if (scsi_bufflen(srb) < 0x10000) { |
1da177e4 LT |
1308 | |
1309 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1310 | registers, data, 19, | |
1311 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1312 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1313 | DMA_FROM_DEVICE, | |
4776e99e BH |
1314 | scsi_sglist(srb), |
1315 | scsi_bufflen(srb), scsi_sg_count(srb), 1); | |
1da177e4 LT |
1316 | |
1317 | return result; | |
1318 | } | |
1319 | ||
1320 | /* | |
1321 | * Since we're requesting more data than we can handle in | |
1322 | * a single read command (max is 64k-1), we will perform | |
1323 | * multiple reads, but each read must be in multiples of | |
1324 | * a sector. Luckily the sector size is in srb->transfersize | |
1325 | * (see linux/drivers/scsi/sr.c). | |
1326 | */ | |
1327 | ||
1328 | if (data[7+0] == GPCMD_READ_CD) { | |
1329 | len = short_pack(data[7+9], data[7+8]); | |
1330 | len <<= 16; | |
1331 | len |= data[7+7]; | |
1332 | US_DEBUGP("handle_read10: GPCMD_READ_CD: len %d\n", len); | |
4776e99e | 1333 | srb->transfersize = scsi_bufflen(srb)/len; |
1da177e4 LT |
1334 | } |
1335 | ||
1336 | if (!srb->transfersize) { | |
1337 | srb->transfersize = 2048; /* A guess */ | |
1338 | US_DEBUGP("handle_read10: transfersize 0, forcing %d\n", | |
1339 | srb->transfersize); | |
1340 | } | |
1341 | ||
b7b1e655 DD |
1342 | /* |
1343 | * Since we only read in one block at a time, we have to create | |
1344 | * a bounce buffer and move the data a piece at a time between the | |
1345 | * bounce buffer and the actual transfer buffer. | |
1346 | */ | |
1da177e4 LT |
1347 | |
1348 | len = (65535/srb->transfersize) * srb->transfersize; | |
1349 | US_DEBUGP("Max read is %d bytes\n", len); | |
4776e99e | 1350 | len = min(len, scsi_bufflen(srb)); |
1da177e4 | 1351 | buffer = kmalloc(len, GFP_NOIO); |
b7b1e655 | 1352 | if (buffer == NULL) /* bloody hell! */ |
1da177e4 LT |
1353 | return USB_STOR_TRANSPORT_FAILED; |
1354 | sector = short_pack(data[7+3], data[7+2]); | |
1355 | sector <<= 16; | |
1356 | sector |= short_pack(data[7+5], data[7+4]); | |
1357 | transferred = 0; | |
1358 | ||
4776e99e | 1359 | while (transferred != scsi_bufflen(srb)) { |
1da177e4 | 1360 | |
4776e99e BH |
1361 | if (len > scsi_bufflen(srb) - transferred) |
1362 | len = scsi_bufflen(srb) - transferred; | |
1da177e4 | 1363 | |
b7b1e655 DD |
1364 | data[3] = len&0xFF; /* (cylL) = expected length (L) */ |
1365 | data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */ | |
1da177e4 | 1366 | |
b7b1e655 | 1367 | /* Fix up the SCSI command sector and num sectors */ |
1da177e4 | 1368 | |
b7b1e655 | 1369 | data[7+2] = MSB_of(sector>>16); /* SCSI command sector */ |
1da177e4 LT |
1370 | data[7+3] = LSB_of(sector>>16); |
1371 | data[7+4] = MSB_of(sector&0xFFFF); | |
1372 | data[7+5] = LSB_of(sector&0xFFFF); | |
1373 | if (data[7+0] == GPCMD_READ_CD) | |
1374 | data[7+6] = 0; | |
b7b1e655 DD |
1375 | data[7+7] = MSB_of(len / srb->transfersize); /* SCSI command */ |
1376 | data[7+8] = LSB_of(len / srb->transfersize); /* num sectors */ | |
1da177e4 LT |
1377 | |
1378 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1379 | registers, data, 19, | |
1380 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1381 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1382 | DMA_FROM_DEVICE, | |
1383 | buffer, | |
1384 | len, 0, 1); | |
1385 | ||
1386 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1387 | break; | |
1388 | ||
b7b1e655 | 1389 | /* Store the data in the transfer buffer */ |
1da177e4 | 1390 | usb_stor_access_xfer_buf(buffer, len, srb, |
1f6f31a0 | 1391 | &sg, &sg_offset, TO_XFER_BUF); |
1da177e4 | 1392 | |
b7b1e655 | 1393 | /* Update the amount transferred and the sector number */ |
1da177e4 LT |
1394 | |
1395 | transferred += len; | |
1396 | sector += len / srb->transfersize; | |
1397 | ||
4776e99e | 1398 | } /* while transferred != scsi_bufflen(srb) */ |
1da177e4 LT |
1399 | |
1400 | kfree(buffer); | |
1401 | return result; | |
1402 | } | |
1403 | ||
1404 | static int usbat_select_and_test_registers(struct us_data *us) | |
1405 | { | |
1406 | int selector; | |
1407 | unsigned char *status = us->iobuf; | |
1da177e4 | 1408 | |
b7b1e655 | 1409 | /* try device = master, then device = slave. */ |
68a6457e DD |
1410 | for (selector = 0xA0; selector <= 0xB0; selector += 0x10) { |
1411 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) != | |
1da177e4 LT |
1412 | USB_STOR_XFER_GOOD) |
1413 | return USB_STOR_TRANSPORT_ERROR; | |
1414 | ||
1415 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status) != | |
1416 | USB_STOR_XFER_GOOD) | |
1417 | return USB_STOR_TRANSPORT_ERROR; | |
1418 | ||
1419 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_DEVICE, status) != | |
1420 | USB_STOR_XFER_GOOD) | |
1421 | return USB_STOR_TRANSPORT_ERROR; | |
1422 | ||
1423 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1424 | USB_STOR_XFER_GOOD) | |
1425 | return USB_STOR_TRANSPORT_ERROR; | |
1426 | ||
1427 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) != | |
1428 | USB_STOR_XFER_GOOD) | |
1429 | return USB_STOR_TRANSPORT_ERROR; | |
1430 | ||
1431 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) != | |
1432 | USB_STOR_XFER_GOOD) | |
1433 | return USB_STOR_TRANSPORT_ERROR; | |
1434 | ||
1435 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) != | |
1436 | USB_STOR_XFER_GOOD) | |
1437 | return USB_STOR_TRANSPORT_ERROR; | |
1438 | ||
1439 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1440 | USB_STOR_XFER_GOOD) | |
1441 | return USB_STOR_TRANSPORT_ERROR; | |
1442 | ||
1443 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1444 | USB_STOR_XFER_GOOD) | |
1445 | return USB_STOR_TRANSPORT_ERROR; | |
1446 | } | |
1447 | ||
1448 | return USB_STOR_TRANSPORT_GOOD; | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Initialize the USBAT processor and the storage device | |
1453 | */ | |
bdcfd9e3 | 1454 | static int init_usbat(struct us_data *us, int devicetype) |
1da177e4 LT |
1455 | { |
1456 | int rc; | |
1457 | struct usbat_info *info; | |
1458 | unsigned char subcountH = USBAT_ATA_LBA_HI; | |
1459 | unsigned char subcountL = USBAT_ATA_LBA_ME; | |
1460 | unsigned char *status = us->iobuf; | |
1461 | ||
887c2560 | 1462 | us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO); |
1da177e4 LT |
1463 | if (!us->extra) { |
1464 | US_DEBUGP("init_usbat: Gah! Can't allocate storage for usbat info struct!\n"); | |
1465 | return 1; | |
1466 | } | |
1da177e4 LT |
1467 | info = (struct usbat_info *) (us->extra); |
1468 | ||
b7b1e655 | 1469 | /* Enable peripheral control signals */ |
1da177e4 LT |
1470 | rc = usbat_write_user_io(us, |
1471 | USBAT_UIO_OE1 | USBAT_UIO_OE0, | |
1472 | USBAT_UIO_EPAD | USBAT_UIO_1); | |
1473 | if (rc != USB_STOR_XFER_GOOD) | |
1474 | return USB_STOR_TRANSPORT_ERROR; | |
1475 | ||
1476 | US_DEBUGP("INIT 1\n"); | |
1477 | ||
1478 | msleep(2000); | |
1479 | ||
1480 | rc = usbat_read_user_io(us, status); | |
1481 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1482 | return rc; | |
1483 | ||
1484 | US_DEBUGP("INIT 2\n"); | |
1485 | ||
1486 | rc = usbat_read_user_io(us, status); | |
1487 | if (rc != USB_STOR_XFER_GOOD) | |
1488 | return USB_STOR_TRANSPORT_ERROR; | |
1489 | ||
1490 | rc = usbat_read_user_io(us, status); | |
1491 | if (rc != USB_STOR_XFER_GOOD) | |
1492 | return USB_STOR_TRANSPORT_ERROR; | |
1493 | ||
1494 | US_DEBUGP("INIT 3\n"); | |
1495 | ||
1da177e4 LT |
1496 | rc = usbat_select_and_test_registers(us); |
1497 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1498 | return rc; | |
1499 | ||
68a6457e | 1500 | US_DEBUGP("INIT 4\n"); |
1da177e4 LT |
1501 | |
1502 | rc = usbat_read_user_io(us, status); | |
1503 | if (rc != USB_STOR_XFER_GOOD) | |
1504 | return USB_STOR_TRANSPORT_ERROR; | |
1505 | ||
68a6457e | 1506 | US_DEBUGP("INIT 5\n"); |
1da177e4 | 1507 | |
b7b1e655 | 1508 | /* Enable peripheral control signals and card detect */ |
1da177e4 LT |
1509 | rc = usbat_device_enable_cdt(us); |
1510 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1511 | return rc; | |
1512 | ||
68a6457e | 1513 | US_DEBUGP("INIT 6\n"); |
1da177e4 LT |
1514 | |
1515 | rc = usbat_read_user_io(us, status); | |
1516 | if (rc != USB_STOR_XFER_GOOD) | |
1517 | return USB_STOR_TRANSPORT_ERROR; | |
1518 | ||
68a6457e | 1519 | US_DEBUGP("INIT 7\n"); |
1da177e4 LT |
1520 | |
1521 | msleep(1400); | |
1522 | ||
1523 | rc = usbat_read_user_io(us, status); | |
1524 | if (rc != USB_STOR_XFER_GOOD) | |
1525 | return USB_STOR_TRANSPORT_ERROR; | |
1526 | ||
68a6457e | 1527 | US_DEBUGP("INIT 8\n"); |
1da177e4 LT |
1528 | |
1529 | rc = usbat_select_and_test_registers(us); | |
1530 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1531 | return rc; | |
1532 | ||
68a6457e DD |
1533 | US_DEBUGP("INIT 9\n"); |
1534 | ||
b7b1e655 | 1535 | /* At this point, we need to detect which device we are using */ |
bdcfd9e3 | 1536 | if (usbat_set_transport(us, info, devicetype)) |
68a6457e DD |
1537 | return USB_STOR_TRANSPORT_ERROR; |
1538 | ||
1539 | US_DEBUGP("INIT 10\n"); | |
1da177e4 LT |
1540 | |
1541 | if (usbat_get_device_type(us) == USBAT_DEV_FLASH) { | |
1542 | subcountH = 0x02; | |
1543 | subcountL = 0x00; | |
1544 | } | |
1545 | rc = usbat_set_shuttle_features(us, (USBAT_FEAT_ETEN | USBAT_FEAT_ET2 | USBAT_FEAT_ET1), | |
1546 | 0x00, 0x88, 0x08, subcountH, subcountL); | |
1547 | if (rc != USB_STOR_XFER_GOOD) | |
1548 | return USB_STOR_TRANSPORT_ERROR; | |
1549 | ||
68a6457e | 1550 | US_DEBUGP("INIT 11\n"); |
1da177e4 LT |
1551 | |
1552 | return USB_STOR_TRANSPORT_GOOD; | |
1553 | } | |
1554 | ||
1555 | /* | |
1556 | * Transport for the HP 8200e | |
1557 | */ | |
1558 | static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us) | |
1559 | { | |
1560 | int result; | |
1561 | unsigned char *status = us->iobuf; | |
1562 | unsigned char registers[32]; | |
1563 | unsigned char data[32]; | |
1564 | unsigned int len; | |
1565 | int i; | |
1da177e4 | 1566 | |
4776e99e | 1567 | len = scsi_bufflen(srb); |
1da177e4 LT |
1568 | |
1569 | /* Send A0 (ATA PACKET COMMAND). | |
1570 | Note: I guess we're never going to get any of the ATA | |
1571 | commands... just ATA Packet Commands. | |
1572 | */ | |
1573 | ||
1574 | registers[0] = USBAT_ATA_FEATURES; | |
1575 | registers[1] = USBAT_ATA_SECCNT; | |
1576 | registers[2] = USBAT_ATA_SECNUM; | |
1577 | registers[3] = USBAT_ATA_LBA_ME; | |
1578 | registers[4] = USBAT_ATA_LBA_HI; | |
1579 | registers[5] = USBAT_ATA_DEVICE; | |
1580 | registers[6] = USBAT_ATA_CMD; | |
1581 | data[0] = 0x00; | |
1582 | data[1] = 0x00; | |
1583 | data[2] = 0x00; | |
b7b1e655 DD |
1584 | data[3] = len&0xFF; /* (cylL) = expected length (L) */ |
1585 | data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */ | |
1586 | data[5] = 0xB0; /* (device sel) = slave */ | |
1587 | data[6] = 0xA0; /* (command) = ATA PACKET COMMAND */ | |
1da177e4 LT |
1588 | |
1589 | for (i=7; i<19; i++) { | |
1590 | registers[i] = 0x10; | |
1591 | data[i] = (i-7 >= srb->cmd_len) ? 0 : srb->cmnd[i-7]; | |
1592 | } | |
1593 | ||
1594 | result = usbat_get_status(us, status); | |
1595 | US_DEBUGP("Status = %02X\n", *status); | |
1596 | if (result != USB_STOR_XFER_GOOD) | |
1597 | return USB_STOR_TRANSPORT_ERROR; | |
1598 | if (srb->cmnd[0] == TEST_UNIT_READY) | |
1599 | transferred = 0; | |
1600 | ||
1601 | if (srb->sc_data_direction == DMA_TO_DEVICE) { | |
1602 | ||
1603 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, | |
1604 | registers, data, 19, | |
1605 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, | |
1606 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), | |
1607 | DMA_TO_DEVICE, | |
4776e99e BH |
1608 | scsi_sglist(srb), |
1609 | len, scsi_sg_count(srb), 10); | |
1da177e4 LT |
1610 | |
1611 | if (result == USB_STOR_TRANSPORT_GOOD) { | |
1612 | transferred += len; | |
1613 | US_DEBUGP("Wrote %08X bytes\n", transferred); | |
1614 | } | |
1615 | ||
1616 | return result; | |
1617 | ||
1618 | } else if (srb->cmnd[0] == READ_10 || | |
1619 | srb->cmnd[0] == GPCMD_READ_CD) { | |
1620 | ||
1621 | return usbat_hp8200e_handle_read10(us, registers, data, srb); | |
1622 | ||
1623 | } | |
1624 | ||
1625 | if (len > 0xFFFF) { | |
1626 | US_DEBUGP("Error: len = %08X... what do I do now?\n", | |
1627 | len); | |
1628 | return USB_STOR_TRANSPORT_ERROR; | |
1629 | } | |
1630 | ||
5d3034ab RK |
1631 | result = usbat_multiple_write(us, registers, data, 7); |
1632 | ||
1633 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1da177e4 | 1634 | return result; |
1da177e4 | 1635 | |
b7b1e655 DD |
1636 | /* |
1637 | * Write the 12-byte command header. | |
1638 | * | |
1639 | * If the command is BLANK then set the timer for 75 minutes. | |
1640 | * Otherwise set it for 10 minutes. | |
1641 | * | |
1642 | * NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW | |
1643 | * AT SPEED 4 IS UNRELIABLE!!! | |
1644 | */ | |
1da177e4 | 1645 | |
5d3034ab RK |
1646 | result = usbat_write_block(us, USBAT_ATA, srb->cmnd, 12, |
1647 | srb->cmnd[0] == GPCMD_BLANK ? 75 : 10, 0); | |
1648 | ||
1649 | if (result != USB_STOR_TRANSPORT_GOOD) | |
1da177e4 | 1650 | return result; |
1da177e4 | 1651 | |
b7b1e655 | 1652 | /* If there is response data to be read in then do it here. */ |
1da177e4 LT |
1653 | |
1654 | if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) { | |
1655 | ||
b7b1e655 | 1656 | /* How many bytes to read in? Check cylL register */ |
1da177e4 LT |
1657 | |
1658 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != | |
1659 | USB_STOR_XFER_GOOD) { | |
1660 | return USB_STOR_TRANSPORT_ERROR; | |
1661 | } | |
1662 | ||
b7b1e655 | 1663 | if (len > 0xFF) { /* need to read cylH also */ |
1da177e4 LT |
1664 | len = *status; |
1665 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) != | |
1666 | USB_STOR_XFER_GOOD) { | |
1667 | return USB_STOR_TRANSPORT_ERROR; | |
1668 | } | |
1669 | len += ((unsigned int) *status)<<8; | |
1670 | } | |
1671 | else | |
1672 | len = *status; | |
1673 | ||
1674 | ||
4776e99e BH |
1675 | result = usbat_read_block(us, scsi_sglist(srb), len, |
1676 | scsi_sg_count(srb)); | |
1da177e4 LT |
1677 | } |
1678 | ||
1679 | return result; | |
1680 | } | |
1681 | ||
1682 | /* | |
1683 | * Transport for USBAT02-based CompactFlash and similar storage devices | |
1684 | */ | |
1685 | static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us) | |
1686 | { | |
1687 | int rc; | |
1688 | struct usbat_info *info = (struct usbat_info *) (us->extra); | |
1689 | unsigned long block, blocks; | |
1690 | unsigned char *ptr = us->iobuf; | |
1691 | static unsigned char inquiry_response[36] = { | |
1692 | 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00 | |
1693 | }; | |
1694 | ||
1695 | if (srb->cmnd[0] == INQUIRY) { | |
1696 | US_DEBUGP("usbat_flash_transport: INQUIRY. Returning bogus response.\n"); | |
1697 | memcpy(ptr, inquiry_response, sizeof(inquiry_response)); | |
1698 | fill_inquiry_response(us, ptr, 36); | |
1699 | return USB_STOR_TRANSPORT_GOOD; | |
1700 | } | |
1701 | ||
1702 | if (srb->cmnd[0] == READ_CAPACITY) { | |
1703 | rc = usbat_flash_check_media(us, info); | |
1704 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1705 | return rc; | |
1706 | ||
1707 | rc = usbat_flash_get_sector_count(us, info); | |
1708 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1709 | return rc; | |
1710 | ||
b7b1e655 DD |
1711 | /* hard coded 512 byte sectors as per ATA spec */ |
1712 | info->ssize = 0x200; | |
1da177e4 LT |
1713 | US_DEBUGP("usbat_flash_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n", |
1714 | info->sectors, info->ssize); | |
1715 | ||
b7b1e655 DD |
1716 | /* |
1717 | * build the reply | |
1718 | * note: must return the sector number of the last sector, | |
1719 | * *not* the total number of sectors | |
1720 | */ | |
1da177e4 LT |
1721 | ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1); |
1722 | ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize); | |
1723 | usb_stor_set_xfer_buf(ptr, 8, srb); | |
1724 | ||
1725 | return USB_STOR_TRANSPORT_GOOD; | |
1726 | } | |
1727 | ||
1728 | if (srb->cmnd[0] == MODE_SELECT_10) { | |
1729 | US_DEBUGP("usbat_flash_transport: Gah! MODE_SELECT_10.\n"); | |
1730 | return USB_STOR_TRANSPORT_ERROR; | |
1731 | } | |
1732 | ||
1733 | if (srb->cmnd[0] == READ_10) { | |
1734 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
1735 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1736 | ||
1737 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); | |
1738 | ||
1739 | US_DEBUGP("usbat_flash_transport: READ_10: read block 0x%04lx count %ld\n", block, blocks); | |
1740 | return usbat_flash_read_data(us, info, block, blocks); | |
1741 | } | |
1742 | ||
1743 | if (srb->cmnd[0] == READ_12) { | |
b7b1e655 DD |
1744 | /* |
1745 | * I don't think we'll ever see a READ_12 but support it anyway | |
1746 | */ | |
1da177e4 LT |
1747 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
1748 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1749 | ||
1750 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | | |
1751 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); | |
1752 | ||
1753 | US_DEBUGP("usbat_flash_transport: READ_12: read block 0x%04lx count %ld\n", block, blocks); | |
1754 | return usbat_flash_read_data(us, info, block, blocks); | |
1755 | } | |
1756 | ||
1757 | if (srb->cmnd[0] == WRITE_10) { | |
1758 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | | |
1759 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1760 | ||
1761 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); | |
1762 | ||
1763 | US_DEBUGP("usbat_flash_transport: WRITE_10: write block 0x%04lx count %ld\n", block, blocks); | |
1764 | return usbat_flash_write_data(us, info, block, blocks); | |
1765 | } | |
1766 | ||
1767 | if (srb->cmnd[0] == WRITE_12) { | |
b7b1e655 DD |
1768 | /* |
1769 | * I don't think we'll ever see a WRITE_12 but support it anyway | |
1770 | */ | |
1da177e4 LT |
1771 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
1772 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); | |
1773 | ||
1774 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | | |
1775 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); | |
1776 | ||
1777 | US_DEBUGP("usbat_flash_transport: WRITE_12: write block 0x%04lx count %ld\n", block, blocks); | |
1778 | return usbat_flash_write_data(us, info, block, blocks); | |
1779 | } | |
1780 | ||
1781 | ||
1782 | if (srb->cmnd[0] == TEST_UNIT_READY) { | |
1783 | US_DEBUGP("usbat_flash_transport: TEST_UNIT_READY.\n"); | |
1784 | ||
1785 | rc = usbat_flash_check_media(us, info); | |
1786 | if (rc != USB_STOR_TRANSPORT_GOOD) | |
1787 | return rc; | |
1788 | ||
1789 | return usbat_check_status(us); | |
1790 | } | |
1791 | ||
1792 | if (srb->cmnd[0] == REQUEST_SENSE) { | |
1793 | US_DEBUGP("usbat_flash_transport: REQUEST_SENSE.\n"); | |
1794 | ||
1795 | memset(ptr, 0, 18); | |
1796 | ptr[0] = 0xF0; | |
1797 | ptr[2] = info->sense_key; | |
1798 | ptr[7] = 11; | |
1799 | ptr[12] = info->sense_asc; | |
1800 | ptr[13] = info->sense_ascq; | |
1801 | usb_stor_set_xfer_buf(ptr, 18, srb); | |
1802 | ||
1803 | return USB_STOR_TRANSPORT_GOOD; | |
1804 | } | |
1805 | ||
1806 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { | |
b7b1e655 DD |
1807 | /* |
1808 | * sure. whatever. not like we can stop the user from popping | |
1809 | * the media out of the device (no locking doors, etc) | |
1810 | */ | |
1da177e4 LT |
1811 | return USB_STOR_TRANSPORT_GOOD; |
1812 | } | |
1813 | ||
1814 | US_DEBUGP("usbat_flash_transport: Gah! Unknown command: %d (0x%x)\n", | |
1815 | srb->cmnd[0], srb->cmnd[0]); | |
1816 | info->sense_key = 0x05; | |
1817 | info->sense_asc = 0x20; | |
1818 | info->sense_ascq = 0x00; | |
1819 | return USB_STOR_TRANSPORT_FAILED; | |
1820 | } | |
1821 | ||
26d6818f | 1822 | static int init_usbat_cd(struct us_data *us) |
bdcfd9e3 PC |
1823 | { |
1824 | return init_usbat(us, USBAT_DEV_HP8200); | |
1825 | } | |
1826 | ||
26d6818f | 1827 | static int init_usbat_flash(struct us_data *us) |
bdcfd9e3 PC |
1828 | { |
1829 | return init_usbat(us, USBAT_DEV_FLASH); | |
1830 | } | |
1831 | ||
26d6818f AS |
1832 | static int usbat_probe(struct usb_interface *intf, |
1833 | const struct usb_device_id *id) | |
bdcfd9e3 | 1834 | { |
26d6818f AS |
1835 | struct us_data *us; |
1836 | int result; | |
1837 | ||
1838 | result = usb_stor_probe1(&us, intf, id, | |
1839 | (id - usbat_usb_ids) + usbat_unusual_dev_list); | |
1840 | if (result) | |
1841 | return result; | |
1842 | ||
1843 | /* The actual transport will be determined later by the | |
1844 | * initialization routine; this is just a placeholder. | |
1845 | */ | |
1846 | us->transport_name = "Shuttle USBAT"; | |
1847 | us->transport = usbat_flash_transport; | |
1848 | us->transport_reset = usb_stor_CB_reset; | |
1849 | us->max_lun = 1; | |
1850 | ||
1851 | result = usb_stor_probe2(us); | |
1852 | return result; | |
bdcfd9e3 PC |
1853 | } |
1854 | ||
26d6818f AS |
1855 | static struct usb_driver usbat_driver = { |
1856 | .name = "ums-usbat", | |
1857 | .probe = usbat_probe, | |
1858 | .disconnect = usb_stor_disconnect, | |
1859 | .suspend = usb_stor_suspend, | |
1860 | .resume = usb_stor_resume, | |
1861 | .reset_resume = usb_stor_reset_resume, | |
1862 | .pre_reset = usb_stor_pre_reset, | |
1863 | .post_reset = usb_stor_post_reset, | |
1864 | .id_table = usbat_usb_ids, | |
1865 | .soft_unbind = 1, | |
1866 | }; | |
1867 | ||
1868 | static int __init usbat_init(void) | |
1da177e4 | 1869 | { |
26d6818f AS |
1870 | return usb_register(&usbat_driver); |
1871 | } | |
1da177e4 | 1872 | |
26d6818f AS |
1873 | static void __exit usbat_exit(void) |
1874 | { | |
1875 | usb_deregister(&usbat_driver); | |
1da177e4 | 1876 | } |
26d6818f AS |
1877 | |
1878 | module_init(usbat_init); | |
1879 | module_exit(usbat_exit); |