| 1 | /* Driver for Freecom USB/IDE adaptor |
| 2 | * |
| 3 | * Freecom v0.1: |
| 4 | * |
| 5 | * First release |
| 6 | * |
| 7 | * Current development and maintenance by: |
| 8 | * (C) 2000 David Brown <usb-storage@davidb.org> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2, or (at your option) any |
| 13 | * later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, but |
| 16 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License along |
| 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 22 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 23 | * |
| 24 | * This driver was developed with information provided in FREECOM's USB |
| 25 | * Programmers Reference Guide. For further information contact Freecom |
| 26 | * (http://www.freecom.de/) |
| 27 | */ |
| 28 | |
| 29 | #include <linux/module.h> |
| 30 | #include <scsi/scsi.h> |
| 31 | #include <scsi/scsi_cmnd.h> |
| 32 | |
| 33 | #include "usb.h" |
| 34 | #include "transport.h" |
| 35 | #include "protocol.h" |
| 36 | #include "debug.h" |
| 37 | |
| 38 | MODULE_DESCRIPTION("Driver for Freecom USB/IDE adaptor"); |
| 39 | MODULE_AUTHOR("David Brown <usb-storage@davidb.org>"); |
| 40 | MODULE_LICENSE("GPL"); |
| 41 | |
| 42 | #ifdef CONFIG_USB_STORAGE_DEBUG |
| 43 | static void pdump(struct us_data *us, void *ibuffer, int length); |
| 44 | #endif |
| 45 | |
| 46 | /* Bits of HD_STATUS */ |
| 47 | #define ERR_STAT 0x01 |
| 48 | #define DRQ_STAT 0x08 |
| 49 | |
| 50 | /* All of the outgoing packets are 64 bytes long. */ |
| 51 | struct freecom_cb_wrap { |
| 52 | u8 Type; /* Command type. */ |
| 53 | u8 Timeout; /* Timeout in seconds. */ |
| 54 | u8 Atapi[12]; /* An ATAPI packet. */ |
| 55 | u8 Filler[50]; /* Padding Data. */ |
| 56 | }; |
| 57 | |
| 58 | struct freecom_xfer_wrap { |
| 59 | u8 Type; /* Command type. */ |
| 60 | u8 Timeout; /* Timeout in seconds. */ |
| 61 | __le32 Count; /* Number of bytes to transfer. */ |
| 62 | u8 Pad[58]; |
| 63 | } __attribute__ ((packed)); |
| 64 | |
| 65 | struct freecom_ide_out { |
| 66 | u8 Type; /* Type + IDE register. */ |
| 67 | u8 Pad; |
| 68 | __le16 Value; /* Value to write. */ |
| 69 | u8 Pad2[60]; |
| 70 | }; |
| 71 | |
| 72 | struct freecom_ide_in { |
| 73 | u8 Type; /* Type | IDE register. */ |
| 74 | u8 Pad[63]; |
| 75 | }; |
| 76 | |
| 77 | struct freecom_status { |
| 78 | u8 Status; |
| 79 | u8 Reason; |
| 80 | __le16 Count; |
| 81 | u8 Pad[60]; |
| 82 | }; |
| 83 | |
| 84 | /* Freecom stuffs the interrupt status in the INDEX_STAT bit of the ide |
| 85 | * register. */ |
| 86 | #define FCM_INT_STATUS 0x02 /* INDEX_STAT */ |
| 87 | #define FCM_STATUS_BUSY 0x80 |
| 88 | |
| 89 | /* These are the packet types. The low bit indicates that this command |
| 90 | * should wait for an interrupt. */ |
| 91 | #define FCM_PACKET_ATAPI 0x21 |
| 92 | #define FCM_PACKET_STATUS 0x20 |
| 93 | |
| 94 | /* Receive data from the IDE interface. The ATAPI packet has already |
| 95 | * waited, so the data should be immediately available. */ |
| 96 | #define FCM_PACKET_INPUT 0x81 |
| 97 | |
| 98 | /* Send data to the IDE interface. */ |
| 99 | #define FCM_PACKET_OUTPUT 0x01 |
| 100 | |
| 101 | /* Write a value to an ide register. Or the ide register to write after |
| 102 | * munging the address a bit. */ |
| 103 | #define FCM_PACKET_IDE_WRITE 0x40 |
| 104 | #define FCM_PACKET_IDE_READ 0xC0 |
| 105 | |
| 106 | /* All packets (except for status) are 64 bytes long. */ |
| 107 | #define FCM_PACKET_LENGTH 64 |
| 108 | #define FCM_STATUS_PACKET_LENGTH 4 |
| 109 | |
| 110 | static int init_freecom(struct us_data *us); |
| 111 | |
| 112 | |
| 113 | /* |
| 114 | * The table of devices |
| 115 | */ |
| 116 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ |
| 117 | vendorName, productName, useProtocol, useTransport, \ |
| 118 | initFunction, flags) \ |
| 119 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ |
| 120 | .driver_info = (flags) } |
| 121 | |
| 122 | static struct usb_device_id freecom_usb_ids[] = { |
| 123 | # include "unusual_freecom.h" |
| 124 | { } /* Terminating entry */ |
| 125 | }; |
| 126 | MODULE_DEVICE_TABLE(usb, freecom_usb_ids); |
| 127 | |
| 128 | #undef UNUSUAL_DEV |
| 129 | |
| 130 | /* |
| 131 | * The flags table |
| 132 | */ |
| 133 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ |
| 134 | vendor_name, product_name, use_protocol, use_transport, \ |
| 135 | init_function, Flags) \ |
| 136 | { \ |
| 137 | .vendorName = vendor_name, \ |
| 138 | .productName = product_name, \ |
| 139 | .useProtocol = use_protocol, \ |
| 140 | .useTransport = use_transport, \ |
| 141 | .initFunction = init_function, \ |
| 142 | } |
| 143 | |
| 144 | static struct us_unusual_dev freecom_unusual_dev_list[] = { |
| 145 | # include "unusual_freecom.h" |
| 146 | { } /* Terminating entry */ |
| 147 | }; |
| 148 | |
| 149 | #undef UNUSUAL_DEV |
| 150 | |
| 151 | static int |
| 152 | freecom_readdata (struct scsi_cmnd *srb, struct us_data *us, |
| 153 | unsigned int ipipe, unsigned int opipe, int count) |
| 154 | { |
| 155 | struct freecom_xfer_wrap *fxfr = |
| 156 | (struct freecom_xfer_wrap *) us->iobuf; |
| 157 | int result; |
| 158 | |
| 159 | fxfr->Type = FCM_PACKET_INPUT | 0x00; |
| 160 | fxfr->Timeout = 0; /* Short timeout for debugging. */ |
| 161 | fxfr->Count = cpu_to_le32 (count); |
| 162 | memset (fxfr->Pad, 0, sizeof (fxfr->Pad)); |
| 163 | |
| 164 | usb_stor_dbg(us, "Read data Freecom! (c=%d)\n", count); |
| 165 | |
| 166 | /* Issue the transfer command. */ |
| 167 | result = usb_stor_bulk_transfer_buf (us, opipe, fxfr, |
| 168 | FCM_PACKET_LENGTH, NULL); |
| 169 | if (result != USB_STOR_XFER_GOOD) { |
| 170 | usb_stor_dbg(us, "Freecom readdata transport error\n"); |
| 171 | return USB_STOR_TRANSPORT_ERROR; |
| 172 | } |
| 173 | |
| 174 | /* Now transfer all of our blocks. */ |
| 175 | usb_stor_dbg(us, "Start of read\n"); |
| 176 | result = usb_stor_bulk_srb(us, ipipe, srb); |
| 177 | usb_stor_dbg(us, "freecom_readdata done!\n"); |
| 178 | |
| 179 | if (result > USB_STOR_XFER_SHORT) |
| 180 | return USB_STOR_TRANSPORT_ERROR; |
| 181 | return USB_STOR_TRANSPORT_GOOD; |
| 182 | } |
| 183 | |
| 184 | static int |
| 185 | freecom_writedata (struct scsi_cmnd *srb, struct us_data *us, |
| 186 | int unsigned ipipe, unsigned int opipe, int count) |
| 187 | { |
| 188 | struct freecom_xfer_wrap *fxfr = |
| 189 | (struct freecom_xfer_wrap *) us->iobuf; |
| 190 | int result; |
| 191 | |
| 192 | fxfr->Type = FCM_PACKET_OUTPUT | 0x00; |
| 193 | fxfr->Timeout = 0; /* Short timeout for debugging. */ |
| 194 | fxfr->Count = cpu_to_le32 (count); |
| 195 | memset (fxfr->Pad, 0, sizeof (fxfr->Pad)); |
| 196 | |
| 197 | usb_stor_dbg(us, "Write data Freecom! (c=%d)\n", count); |
| 198 | |
| 199 | /* Issue the transfer command. */ |
| 200 | result = usb_stor_bulk_transfer_buf (us, opipe, fxfr, |
| 201 | FCM_PACKET_LENGTH, NULL); |
| 202 | if (result != USB_STOR_XFER_GOOD) { |
| 203 | usb_stor_dbg(us, "Freecom writedata transport error\n"); |
| 204 | return USB_STOR_TRANSPORT_ERROR; |
| 205 | } |
| 206 | |
| 207 | /* Now transfer all of our blocks. */ |
| 208 | usb_stor_dbg(us, "Start of write\n"); |
| 209 | result = usb_stor_bulk_srb(us, opipe, srb); |
| 210 | |
| 211 | usb_stor_dbg(us, "freecom_writedata done!\n"); |
| 212 | if (result > USB_STOR_XFER_SHORT) |
| 213 | return USB_STOR_TRANSPORT_ERROR; |
| 214 | return USB_STOR_TRANSPORT_GOOD; |
| 215 | } |
| 216 | |
| 217 | /* |
| 218 | * Transport for the Freecom USB/IDE adaptor. |
| 219 | * |
| 220 | */ |
| 221 | static int freecom_transport(struct scsi_cmnd *srb, struct us_data *us) |
| 222 | { |
| 223 | struct freecom_cb_wrap *fcb; |
| 224 | struct freecom_status *fst; |
| 225 | unsigned int ipipe, opipe; /* We need both pipes. */ |
| 226 | int result; |
| 227 | unsigned int partial; |
| 228 | int length; |
| 229 | |
| 230 | fcb = (struct freecom_cb_wrap *) us->iobuf; |
| 231 | fst = (struct freecom_status *) us->iobuf; |
| 232 | |
| 233 | usb_stor_dbg(us, "Freecom TRANSPORT STARTED\n"); |
| 234 | |
| 235 | /* Get handles for both transports. */ |
| 236 | opipe = us->send_bulk_pipe; |
| 237 | ipipe = us->recv_bulk_pipe; |
| 238 | |
| 239 | /* The ATAPI Command always goes out first. */ |
| 240 | fcb->Type = FCM_PACKET_ATAPI | 0x00; |
| 241 | fcb->Timeout = 0; |
| 242 | memcpy (fcb->Atapi, srb->cmnd, 12); |
| 243 | memset (fcb->Filler, 0, sizeof (fcb->Filler)); |
| 244 | |
| 245 | US_DEBUG(pdump(us, srb->cmnd, 12)); |
| 246 | |
| 247 | /* Send it out. */ |
| 248 | result = usb_stor_bulk_transfer_buf (us, opipe, fcb, |
| 249 | FCM_PACKET_LENGTH, NULL); |
| 250 | |
| 251 | /* The Freecom device will only fail if there is something wrong in |
| 252 | * USB land. It returns the status in its own registers, which |
| 253 | * come back in the bulk pipe. */ |
| 254 | if (result != USB_STOR_XFER_GOOD) { |
| 255 | usb_stor_dbg(us, "freecom transport error\n"); |
| 256 | return USB_STOR_TRANSPORT_ERROR; |
| 257 | } |
| 258 | |
| 259 | /* There are times we can optimize out this status read, but it |
| 260 | * doesn't hurt us to always do it now. */ |
| 261 | result = usb_stor_bulk_transfer_buf (us, ipipe, fst, |
| 262 | FCM_STATUS_PACKET_LENGTH, &partial); |
| 263 | usb_stor_dbg(us, "foo Status result %d %u\n", result, partial); |
| 264 | if (result != USB_STOR_XFER_GOOD) |
| 265 | return USB_STOR_TRANSPORT_ERROR; |
| 266 | |
| 267 | US_DEBUG(pdump(us, (void *)fst, partial)); |
| 268 | |
| 269 | /* The firmware will time-out commands after 20 seconds. Some commands |
| 270 | * can legitimately take longer than this, so we use a different |
| 271 | * command that only waits for the interrupt and then sends status, |
| 272 | * without having to send a new ATAPI command to the device. |
| 273 | * |
| 274 | * NOTE: There is some indication that a data transfer after a timeout |
| 275 | * may not work, but that is a condition that should never happen. |
| 276 | */ |
| 277 | while (fst->Status & FCM_STATUS_BUSY) { |
| 278 | usb_stor_dbg(us, "20 second USB/ATAPI bridge TIMEOUT occurred!\n"); |
| 279 | usb_stor_dbg(us, "fst->Status is %x\n", fst->Status); |
| 280 | |
| 281 | /* Get the status again */ |
| 282 | fcb->Type = FCM_PACKET_STATUS; |
| 283 | fcb->Timeout = 0; |
| 284 | memset (fcb->Atapi, 0, sizeof(fcb->Atapi)); |
| 285 | memset (fcb->Filler, 0, sizeof (fcb->Filler)); |
| 286 | |
| 287 | /* Send it out. */ |
| 288 | result = usb_stor_bulk_transfer_buf (us, opipe, fcb, |
| 289 | FCM_PACKET_LENGTH, NULL); |
| 290 | |
| 291 | /* The Freecom device will only fail if there is something |
| 292 | * wrong in USB land. It returns the status in its own |
| 293 | * registers, which come back in the bulk pipe. |
| 294 | */ |
| 295 | if (result != USB_STOR_XFER_GOOD) { |
| 296 | usb_stor_dbg(us, "freecom transport error\n"); |
| 297 | return USB_STOR_TRANSPORT_ERROR; |
| 298 | } |
| 299 | |
| 300 | /* get the data */ |
| 301 | result = usb_stor_bulk_transfer_buf (us, ipipe, fst, |
| 302 | FCM_STATUS_PACKET_LENGTH, &partial); |
| 303 | |
| 304 | usb_stor_dbg(us, "bar Status result %d %u\n", result, partial); |
| 305 | if (result != USB_STOR_XFER_GOOD) |
| 306 | return USB_STOR_TRANSPORT_ERROR; |
| 307 | |
| 308 | US_DEBUG(pdump(us, (void *)fst, partial)); |
| 309 | } |
| 310 | |
| 311 | if (partial != 4) |
| 312 | return USB_STOR_TRANSPORT_ERROR; |
| 313 | if ((fst->Status & 1) != 0) { |
| 314 | usb_stor_dbg(us, "operation failed\n"); |
| 315 | return USB_STOR_TRANSPORT_FAILED; |
| 316 | } |
| 317 | |
| 318 | /* The device might not have as much data available as we |
| 319 | * requested. If you ask for more than the device has, this reads |
| 320 | * and such will hang. */ |
| 321 | usb_stor_dbg(us, "Device indicates that it has %d bytes available\n", |
| 322 | le16_to_cpu(fst->Count)); |
| 323 | usb_stor_dbg(us, "SCSI requested %d\n", scsi_bufflen(srb)); |
| 324 | |
| 325 | /* Find the length we desire to read. */ |
| 326 | switch (srb->cmnd[0]) { |
| 327 | case INQUIRY: |
| 328 | case REQUEST_SENSE: /* 16 or 18 bytes? spec says 18, lots of devices only have 16 */ |
| 329 | case MODE_SENSE: |
| 330 | case MODE_SENSE_10: |
| 331 | length = le16_to_cpu(fst->Count); |
| 332 | break; |
| 333 | default: |
| 334 | length = scsi_bufflen(srb); |
| 335 | } |
| 336 | |
| 337 | /* verify that this amount is legal */ |
| 338 | if (length > scsi_bufflen(srb)) { |
| 339 | length = scsi_bufflen(srb); |
| 340 | usb_stor_dbg(us, "Truncating request to match buffer length: %d\n", |
| 341 | length); |
| 342 | } |
| 343 | |
| 344 | /* What we do now depends on what direction the data is supposed to |
| 345 | * move in. */ |
| 346 | |
| 347 | switch (us->srb->sc_data_direction) { |
| 348 | case DMA_FROM_DEVICE: |
| 349 | /* catch bogus "read 0 length" case */ |
| 350 | if (!length) |
| 351 | break; |
| 352 | /* Make sure that the status indicates that the device |
| 353 | * wants data as well. */ |
| 354 | if ((fst->Status & DRQ_STAT) == 0 || (fst->Reason & 3) != 2) { |
| 355 | usb_stor_dbg(us, "SCSI wants data, drive doesn't have any\n"); |
| 356 | return USB_STOR_TRANSPORT_FAILED; |
| 357 | } |
| 358 | result = freecom_readdata (srb, us, ipipe, opipe, length); |
| 359 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 360 | return result; |
| 361 | |
| 362 | usb_stor_dbg(us, "Waiting for status\n"); |
| 363 | result = usb_stor_bulk_transfer_buf (us, ipipe, fst, |
| 364 | FCM_PACKET_LENGTH, &partial); |
| 365 | US_DEBUG(pdump(us, (void *)fst, partial)); |
| 366 | |
| 367 | if (partial != 4 || result > USB_STOR_XFER_SHORT) |
| 368 | return USB_STOR_TRANSPORT_ERROR; |
| 369 | if ((fst->Status & ERR_STAT) != 0) { |
| 370 | usb_stor_dbg(us, "operation failed\n"); |
| 371 | return USB_STOR_TRANSPORT_FAILED; |
| 372 | } |
| 373 | if ((fst->Reason & 3) != 3) { |
| 374 | usb_stor_dbg(us, "Drive seems still hungry\n"); |
| 375 | return USB_STOR_TRANSPORT_FAILED; |
| 376 | } |
| 377 | usb_stor_dbg(us, "Transfer happy\n"); |
| 378 | break; |
| 379 | |
| 380 | case DMA_TO_DEVICE: |
| 381 | /* catch bogus "write 0 length" case */ |
| 382 | if (!length) |
| 383 | break; |
| 384 | /* Make sure the status indicates that the device wants to |
| 385 | * send us data. */ |
| 386 | /* !!IMPLEMENT!! */ |
| 387 | result = freecom_writedata (srb, us, ipipe, opipe, length); |
| 388 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 389 | return result; |
| 390 | |
| 391 | usb_stor_dbg(us, "Waiting for status\n"); |
| 392 | result = usb_stor_bulk_transfer_buf (us, ipipe, fst, |
| 393 | FCM_PACKET_LENGTH, &partial); |
| 394 | |
| 395 | if (partial != 4 || result > USB_STOR_XFER_SHORT) |
| 396 | return USB_STOR_TRANSPORT_ERROR; |
| 397 | if ((fst->Status & ERR_STAT) != 0) { |
| 398 | usb_stor_dbg(us, "operation failed\n"); |
| 399 | return USB_STOR_TRANSPORT_FAILED; |
| 400 | } |
| 401 | if ((fst->Reason & 3) != 3) { |
| 402 | usb_stor_dbg(us, "Drive seems still hungry\n"); |
| 403 | return USB_STOR_TRANSPORT_FAILED; |
| 404 | } |
| 405 | |
| 406 | usb_stor_dbg(us, "Transfer happy\n"); |
| 407 | break; |
| 408 | |
| 409 | |
| 410 | case DMA_NONE: |
| 411 | /* Easy, do nothing. */ |
| 412 | break; |
| 413 | |
| 414 | default: |
| 415 | /* should never hit here -- filtered in usb.c */ |
| 416 | usb_stor_dbg(us, "freecom unimplemented direction: %d\n", |
| 417 | us->srb->sc_data_direction); |
| 418 | /* Return fail, SCSI seems to handle this better. */ |
| 419 | return USB_STOR_TRANSPORT_FAILED; |
| 420 | break; |
| 421 | } |
| 422 | |
| 423 | return USB_STOR_TRANSPORT_GOOD; |
| 424 | } |
| 425 | |
| 426 | static int init_freecom(struct us_data *us) |
| 427 | { |
| 428 | int result; |
| 429 | char *buffer = us->iobuf; |
| 430 | |
| 431 | /* The DMA-mapped I/O buffer is 64 bytes long, just right for |
| 432 | * all our packets. No need to allocate any extra buffer space. |
| 433 | */ |
| 434 | |
| 435 | result = usb_stor_control_msg(us, us->recv_ctrl_pipe, |
| 436 | 0x4c, 0xc0, 0x4346, 0x0, buffer, 0x20, 3*HZ); |
| 437 | buffer[32] = '\0'; |
| 438 | usb_stor_dbg(us, "String returned from FC init is: %s\n", buffer); |
| 439 | |
| 440 | /* Special thanks to the people at Freecom for providing me with |
| 441 | * this "magic sequence", which they use in their Windows and MacOS |
| 442 | * drivers to make sure that all the attached perhiperals are |
| 443 | * properly reset. |
| 444 | */ |
| 445 | |
| 446 | /* send reset */ |
| 447 | result = usb_stor_control_msg(us, us->send_ctrl_pipe, |
| 448 | 0x4d, 0x40, 0x24d8, 0x0, NULL, 0x0, 3*HZ); |
| 449 | usb_stor_dbg(us, "result from activate reset is %d\n", result); |
| 450 | |
| 451 | /* wait 250ms */ |
| 452 | mdelay(250); |
| 453 | |
| 454 | /* clear reset */ |
| 455 | result = usb_stor_control_msg(us, us->send_ctrl_pipe, |
| 456 | 0x4d, 0x40, 0x24f8, 0x0, NULL, 0x0, 3*HZ); |
| 457 | usb_stor_dbg(us, "result from clear reset is %d\n", result); |
| 458 | |
| 459 | /* wait 3 seconds */ |
| 460 | mdelay(3 * 1000); |
| 461 | |
| 462 | return USB_STOR_TRANSPORT_GOOD; |
| 463 | } |
| 464 | |
| 465 | static int usb_stor_freecom_reset(struct us_data *us) |
| 466 | { |
| 467 | printk (KERN_CRIT "freecom reset called\n"); |
| 468 | |
| 469 | /* We don't really have this feature. */ |
| 470 | return FAILED; |
| 471 | } |
| 472 | |
| 473 | #ifdef CONFIG_USB_STORAGE_DEBUG |
| 474 | static void pdump(struct us_data *us, void *ibuffer, int length) |
| 475 | { |
| 476 | static char line[80]; |
| 477 | int offset = 0; |
| 478 | unsigned char *buffer = (unsigned char *) ibuffer; |
| 479 | int i, j; |
| 480 | int from, base; |
| 481 | |
| 482 | offset = 0; |
| 483 | for (i = 0; i < length; i++) { |
| 484 | if ((i & 15) == 0) { |
| 485 | if (i > 0) { |
| 486 | offset += sprintf (line+offset, " - "); |
| 487 | for (j = i - 16; j < i; j++) { |
| 488 | if (buffer[j] >= 32 && buffer[j] <= 126) |
| 489 | line[offset++] = buffer[j]; |
| 490 | else |
| 491 | line[offset++] = '.'; |
| 492 | } |
| 493 | line[offset] = 0; |
| 494 | usb_stor_dbg(us, "%s\n", line); |
| 495 | offset = 0; |
| 496 | } |
| 497 | offset += sprintf (line+offset, "%08x:", i); |
| 498 | } else if ((i & 7) == 0) { |
| 499 | offset += sprintf (line+offset, " -"); |
| 500 | } |
| 501 | offset += sprintf (line+offset, " %02x", buffer[i] & 0xff); |
| 502 | } |
| 503 | |
| 504 | /* Add the last "chunk" of data. */ |
| 505 | from = (length - 1) % 16; |
| 506 | base = ((length - 1) / 16) * 16; |
| 507 | |
| 508 | for (i = from + 1; i < 16; i++) |
| 509 | offset += sprintf (line+offset, " "); |
| 510 | if (from < 8) |
| 511 | offset += sprintf (line+offset, " "); |
| 512 | offset += sprintf (line+offset, " - "); |
| 513 | |
| 514 | for (i = 0; i <= from; i++) { |
| 515 | if (buffer[base+i] >= 32 && buffer[base+i] <= 126) |
| 516 | line[offset++] = buffer[base+i]; |
| 517 | else |
| 518 | line[offset++] = '.'; |
| 519 | } |
| 520 | line[offset] = 0; |
| 521 | usb_stor_dbg(us, "%s\n", line); |
| 522 | offset = 0; |
| 523 | } |
| 524 | #endif |
| 525 | |
| 526 | static int freecom_probe(struct usb_interface *intf, |
| 527 | const struct usb_device_id *id) |
| 528 | { |
| 529 | struct us_data *us; |
| 530 | int result; |
| 531 | |
| 532 | result = usb_stor_probe1(&us, intf, id, |
| 533 | (id - freecom_usb_ids) + freecom_unusual_dev_list); |
| 534 | if (result) |
| 535 | return result; |
| 536 | |
| 537 | us->transport_name = "Freecom"; |
| 538 | us->transport = freecom_transport; |
| 539 | us->transport_reset = usb_stor_freecom_reset; |
| 540 | us->max_lun = 0; |
| 541 | |
| 542 | result = usb_stor_probe2(us); |
| 543 | return result; |
| 544 | } |
| 545 | |
| 546 | static struct usb_driver freecom_driver = { |
| 547 | .name = "ums-freecom", |
| 548 | .probe = freecom_probe, |
| 549 | .disconnect = usb_stor_disconnect, |
| 550 | .suspend = usb_stor_suspend, |
| 551 | .resume = usb_stor_resume, |
| 552 | .reset_resume = usb_stor_reset_resume, |
| 553 | .pre_reset = usb_stor_pre_reset, |
| 554 | .post_reset = usb_stor_post_reset, |
| 555 | .id_table = freecom_usb_ids, |
| 556 | .soft_unbind = 1, |
| 557 | .no_dynamic_id = 1, |
| 558 | }; |
| 559 | |
| 560 | module_usb_driver(freecom_driver); |