1 /*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * Supports the following devices:
13 * Edgeport/4
14 * Edgeport/4t
15 * Edgeport/2
16 * Edgeport/4i
17 * Edgeport/2i
18 * Edgeport/421
19 * Edgeport/21
20 * Rapidport/4
21 * Edgeport/8
22 * Edgeport/2D8
23 * Edgeport/4D8
24 * Edgeport/8i
25 *
26 * Version history:
27 *
28 * 2003_04_03 al borchers
29 * - fixed a bug (that shows up with dosemu) where the tty struct is
30 * used in a callback after it has been freed
31 *
32 * 2.3 2002_03_08 greg kroah-hartman
33 * - fixed bug when multiple devices were attached at the same time.
34 *
35 * 2.2 2001_11_14 greg kroah-hartman
36 * - fixed bug in edge_close that kept the port from being used more
37 * than once.
38 * - fixed memory leak on device removal.
39 * - fixed potential double free of memory when command urb submitting
40 * failed.
41 * - other small cleanups when the device is removed
42 *
43 * 2.1 2001_07_09 greg kroah-hartman
44 * - added support for TIOCMBIS and TIOCMBIC.
45 *
46 * (04/08/2001) gb
47 * - Identify version on module load.
48 *
49 * 2.0 2001_03_05 greg kroah-hartman
50 * - reworked entire driver to fit properly in with the other usb-serial
51 * drivers. Occasional oopses still happen, but it's a good start.
52 *
53 * 1.2.3 (02/23/2001) greg kroah-hartman
54 * - changed device table to work properly for 2.4.x final format.
55 * - fixed problem with dropping data at high data rates.
56 *
57 * 1.2.2 (11/27/2000) greg kroah-hartman
58 * - cleaned up more NTisms.
59 * - Added device table for 2.4.0-test11
60 *
61 * 1.2.1 (11/08/2000) greg kroah-hartman
62 * - Started to clean up NTisms.
63 * - Fixed problem with dev field of urb for kernels >= 2.4.0-test9
64 *
65 * 1.2 (10/17/2000) David Iacovelli
66 * Remove all EPIC code and GPL source
67 * Fix RELEVANT_IFLAG macro to include flow control
68 * changes port configuration changes.
69 * Fix redefinition of SERIAL_MAGIC
70 * Change all timeout values to 5 seconds
71 * Tried to fix the UHCI multiple urb submission, but failed miserably.
72 * it seems to work fine with OHCI.
73 * ( Greg take a look at the #if 0 at end of WriteCmdUsb() we must
74 * find a way to work arount this UHCI bug )
75 *
76 * 1.1 (10/11/2000) David Iacovelli
77 * Fix XON/XOFF flow control to support both IXON and IXOFF
78 *
79 * 0.9.27 (06/30/2000) David Iacovelli
80 * Added transmit queue and now allocate urb for command writes.
81 *
82 * 0.9.26 (06/29/2000) David Iacovelli
83 * Add support for 80251 based edgeport
84 *
85 * 0.9.25 (06/27/2000) David Iacovelli
86 * Do not close the port if it has multiple opens.
87 *
88 * 0.9.24 (05/26/2000) David Iacovelli
89 * Add IOCTLs to support RXTX and JAVA POS
90 * and first cut at running BlackBox Demo
91 *
92 * 0.9.23 (05/24/2000) David Iacovelli
93 * Add IOCTLs to support RXTX and JAVA POS
94 *
95 * 0.9.22 (05/23/2000) David Iacovelli
96 * fixed bug in enumeration. If epconfig turns on mapping by
97 * path after a device is already plugged in, we now update
98 * the mapping correctly
99 *
100 * 0.9.21 (05/16/2000) David Iacovelli
101 * Added BlockUntilChaseResp() to also wait for txcredits
102 * Updated the way we allocate and handle write URBs
103 * Add debug code to dump buffers
104 *
105 * 0.9.20 (05/01/2000) David Iacovelli
106 * change driver to use usb/tts/
107 *
108 * 0.9.19 (05/01/2000) David Iacovelli
109 * Update code to compile if DEBUG is off
110 *
111 * 0.9.18 (04/28/2000) David Iacovelli
112 * cleanup and test tty_register with devfs
113 *
114 * 0.9.17 (04/27/2000) greg kroah-hartman
115 * changed tty_register around to be like the way it
116 * was before, but now it works properly with devfs.
117 *
118 * 0.9.16 (04/26/2000) david iacovelli
119 * Fixed bug in GetProductInfo()
120 *
121 * 0.9.15 (04/25/2000) david iacovelli
122 * Updated enumeration
123 *
124 * 0.9.14 (04/24/2000) david iacovelli
125 * Removed all config/status IOCTLS and
126 * converted to using /proc/edgeport
127 * still playing with devfs
128 *
129 * 0.9.13 (04/24/2000) david iacovelli
130 * Removed configuration based on ttyUSB0
131 * Added support for configuration using /prod/edgeport
132 * first attempt at using devfs (not working yet!)
133 * Added IOCTL to GetProductInfo()
134 * Added support for custom baud rates
135 * Add support for random port numbers
136 *
137 * 0.9.12 (04/18/2000) david iacovelli
138 * added additional configuration IOCTLs
139 * use ttyUSB0 for configuration
140 *
141 * 0.9.11 (04/17/2000) greg kroah-hartman
142 * fixed module initialization race conditions.
143 * made all urbs dynamically allocated.
144 * made driver devfs compatible. now it only registers the tty device
145 * when the device is actually plugged in.
146 *
147 * 0.9.10 (04/13/2000) greg kroah-hartman
148 * added proc interface framework.
149 *
150 * 0.9.9 (04/13/2000) david iacovelli
151 * added enumeration code and ioctls to configure the device
152 *
153 * 0.9.8 (04/12/2000) david iacovelli
154 * Change interrupt read start when device is plugged in
155 * and stop when device is removed
156 * process interrupt reads when all ports are closed
157 * (keep value of rxBytesAvail consistent with the edgeport)
158 * set the USB_BULK_QUEUE flag so that we can shove a bunch
159 * of urbs at once down the pipe
160 *
161 * 0.9.7 (04/10/2000) david iacovelli
162 * start to add enumeration code.
163 * generate serial number for epic devices
164 * add support for kdb
165 *
166 * 0.9.6 (03/30/2000) david iacovelli
167 * add IOCTL to get string, manufacture, and boot descriptors
168 *
169 * 0.9.5 (03/14/2000) greg kroah-hartman
170 * more error checking added to SerialOpen to try to fix UHCI open problem
171 *
172 * 0.9.4 (03/09/2000) greg kroah-hartman
173 * added more error checking to handle oops when data is hanging
174 * around and tty is abruptly closed.
175 *
176 * 0.9.3 (03/09/2000) david iacovelli
177 * Add epic support for xon/xoff chars
178 * play with performance
179 *
180 * 0.9.2 (03/08/2000) greg kroah-hartman
181 * changed most "info" calls to "dbg"
182 * implemented flow control properly in the termios call
183 *
184 * 0.9.1 (03/08/2000) david iacovelli
185 * added EPIC support
186 * enabled bootloader update
187 *
188 * 0.9 (03/08/2000) greg kroah-hartman
189 * Release to IO networks.
190 * Integrated changes that David made
191 * made getting urbs for writing SMP safe
192 *
193 * 0.8 (03/07/2000) greg kroah-hartman
194 * Release to IO networks.
195 * Fixed problems that were seen in code by David.
196 * Now both Edgeport/4 and Edgeport/2 works properly.
197 * Changed most of the functions to use port instead of serial.
198 *
199 * 0.7 (02/27/2000) greg kroah-hartman
200 * Milestone 3 release.
201 * Release to IO Networks
202 * ioctl for waiting on line change implemented.
203 * ioctl for getting statistics implemented.
204 * multiport support working.
205 * lsr and msr registers are now handled properly.
206 * change break now hooked up and working.
207 * support for all known Edgeport devices.
208 *
209 * 0.6 (02/22/2000) greg kroah-hartman
210 * Release to IO networks.
211 * CHASE is implemented correctly when port is closed.
212 * SerialOpen now blocks correctly until port is fully opened.
213 *
214 * 0.5 (02/20/2000) greg kroah-hartman
215 * Release to IO networks.
216 * Known problems:
217 * modem status register changes are not sent on to the user
218 * CHASE is not implemented when the port is closed.
219 *
220 * 0.4 (02/16/2000) greg kroah-hartman
221 * Second cut at the CeBit demo.
222 * Doesn't leak memory on every write to the port
223 * Still small leaks on startup.
224 * Added support for Edgeport/2 and Edgeport/8
225 *
226 * 0.3 (02/15/2000) greg kroah-hartman
227 * CeBit demo release.
228 * Force the line settings to 4800, 8, 1, e for the demo.
229 * Warning! This version leaks memory like crazy!
230 *
231 * 0.2 (01/30/2000) greg kroah-hartman
232 * Milestone 1 release.
233 * Device is found by USB subsystem, enumerated, fimware is downloaded
234 * and the descriptors are printed to the debug log, config is set, and
235 * green light starts to blink. Open port works, and data can be sent
236 * and received at the default settings of the UART. Loopback connector
237 * and debug log confirms this.
238 *
239 * 0.1 (01/23/2000) greg kroah-hartman
240 * Initial release to help IO Networks try to set up their test system.
241 * Edgeport4 is recognized, firmware is downloaded, config is set so
242 * device blinks green light every 3 sec. Port is bound, but opening,
243 * closing, and sending data do not work properly.
244 *
245 */
246
247 #include <linux/config.h>
248 #include <linux/kernel.h>
249 #include <linux/errno.h>
250 #include <linux/init.h>
251 #include <linux/slab.h>
252 #include <linux/tty.h>
253 #include <linux/tty_driver.h>
254 #include <linux/tty_flip.h>
255 #include <linux/module.h>
256 #include <linux/spinlock.h>
257 #include <linux/serial.h>
258 #include <linux/ioctl.h>
259 #include <asm/uaccess.h>
260 #include <linux/usb.h>
261
262 #ifdef CONFIG_USB_SERIAL_DEBUG
263 static int debug = 1;
264 #else
265 static int debug;
266 #endif
267
268 #include "usb-serial.h"
269
270 #include "io_edgeport.h"
271 #include "io_ionsp.h" /* info for the iosp messages */
272 #include "io_16654.h" /* 16654 UART defines */
273
274 /*
275 * Version Information
276 */
277 #define DRIVER_VERSION "v2.3"
278 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
279 #define DRIVER_DESC "Edgeport USB Serial Driver"
280
281 /* First, the latest boot code - for first generation edgeports */
282 #define IMAGE_ARRAY_NAME BootCodeImage_GEN1
283 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1
284 #include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */
285
286 /* for second generation edgeports */
287 #define IMAGE_ARRAY_NAME BootCodeImage_GEN2
288 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2
289 #include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */
290
291 /* Then finally the main run-time operational code - for first generation edgeports */
292 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1
293 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1
294 #include "io_fw_down.h" /* Define array OperationalCodeImage[] */
295
296 /* for second generation edgeports */
297 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2
298 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2
299 #include "io_fw_down2.h" /* Define array OperationalCodeImage[] */
300
301
302 #define MAX_NAME_LEN 64
303
304
305 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
306 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
307 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
308
309 #ifndef SERIAL_MAGIC
310 #define SERIAL_MAGIC 0x6702
311 #endif
312 #define PORT_MAGIC 0x7301
313
314
315 /* receive port state */
316 enum RXSTATE {
317 EXPECT_HDR1 = 0, /* Expect header byte 1 */
318 EXPECT_HDR2 = 1, /* Expect header byte 2 */
319 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
320 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
321 };
322
323
324 /* Transmit Fifo
325 * This Transmit queue is an extension of the edgeport Rx buffer.
326 * The maximum amount of data buffered in both the edgeport
327 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
328 */
329 struct TxFifo {
330 unsigned int head; /* index to head pointer (write) */
331 unsigned int tail; /* index to tail pointer (read) */
332 unsigned int count; /* Bytes in queue */
333 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
334 unsigned char *fifo; /* allocated Buffer */
335 };
336
337 /* This structure holds all of the local port information */
338 struct edgeport_port {
339 __u16 txCredits; /* our current credits for this port */
340 __u16 maxTxCredits; /* the max size of the port */
341
342 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
343 struct urb *write_urb; /* write URB for this port */
344 char write_in_progress; /* TRUE while a write URB is outstanding */
345
346 __u8 shadowLCR; /* last LCR value received */
347 __u8 shadowMCR; /* last MCR value received */
348 __u8 shadowMSR; /* last MSR value received */
349 __u8 shadowLSR; /* last LSR value received */
350 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
351 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
352 __u8 validDataMask;
353 __u32 baudRate;
354
355 char open;
356 char openPending;
357 char commandPending;
358 char closePending;
359 char chaseResponsePending;
360
361 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
362 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
363 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
364 wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
365
366 struct async_icount icount;
367 struct usb_serial_port *port; /* loop back to the owner of this object */
368 };
369
370
371 /* This structure holds all of the individual device information */
372 struct edgeport_serial {
373 char name[MAX_NAME_LEN+1]; /* string name of this device */
374
375 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
376 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
377 struct edgeport_product_info product_info; /* Product Info */
378
379 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
380 unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
381 struct urb * interrupt_read_urb; /* our interrupt urb */
382
383 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
384 unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
385 struct urb * read_urb; /* our bulk read urb */
386
387 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
388
389 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
390
391 enum RXSTATE rxState; /* the current state of the bulk receive processor */
392 __u8 rxHeader1; /* receive header byte 1 */
393 __u8 rxHeader2; /* receive header byte 2 */
394 __u8 rxHeader3; /* receive header byte 3 */
395 __u8 rxPort; /* the port that we are currently receiving data for */
396 __u8 rxStatusCode; /* the receive status code */
397 __u8 rxStatusParam; /* the receive status paramater */
398 __s16 rxBytesRemaining; /* the number of port bytes left to read */
399 struct usb_serial *serial; /* loop back to the owner of this object */
400 };
401
402 /* baud rate information */
403 struct divisor_table_entry {
404 __u32 BaudRate;
405 __u16 Divisor;
406 };
407
408 //
409 // Define table of divisors for Rev A EdgePort/4 hardware
410 // These assume a 3.6864MHz crystal, the standard /16, and
411 // MCR.7 = 0.
412 //
413 static struct divisor_table_entry divisor_table[] = {
414 { 50, 4608},
415 { 75, 3072},
416 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
417 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
418 { 150, 1536},
419 { 300, 768},
420 { 600, 384},
421 { 1200, 192},
422 { 1800, 128},
423 { 2400, 96},
424 { 4800, 48},
425 { 7200, 32},
426 { 9600, 24},
427 { 14400, 16},
428 { 19200, 12},
429 { 38400, 6},
430 { 57600, 4},
431 { 115200, 2},
432 { 230400, 1},
433 };
434
435 /* local variables */
436 static int CmdUrbs = 0; /* Number of outstanding Command Write Urbs */
437
438
439 /* local function prototypes */
440
441 /* function prototypes for all URB callbacks */
442 static void edge_interrupt_callback (struct urb *urb);
443 static void edge_bulk_in_callback (struct urb *urb);
444 static void edge_bulk_out_data_callback (struct urb *urb);
445 static void edge_bulk_out_cmd_callback (struct urb *urb);
446
447 /* function prototypes for the usbserial callbacks */
448 static int edge_open (struct usb_serial_port *port, struct file *filp);
449 static void edge_close (struct usb_serial_port *port, struct file *filp);
450 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
451 static int edge_write_room (struct usb_serial_port *port);
452 static int edge_chars_in_buffer (struct usb_serial_port *port);
453 static void edge_throttle (struct usb_serial_port *port);
454 static void edge_unthrottle (struct usb_serial_port *port);
455 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
456 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
457 static void edge_break (struct usb_serial_port *port, int break_state);
458 static int edge_startup (struct usb_serial *serial);
459 static void edge_shutdown (struct usb_serial *serial);
460
461
462 #include "io_tables.h" /* all of the devices that this driver supports */
463
464
465 /* function prototypes for all of our local functions */
466 static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength);
467 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3);
468 static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr);
469 static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
470 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param);
471 static int calc_baud_rate_divisor (int baud_rate, int *divisor);
472 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate);
473 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios);
474 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
475 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
476 static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
477
478 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
479 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
480 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
481 static void get_manufacturing_desc (struct edgeport_serial *edge_serial);
482 static void get_boot_desc (struct edgeport_serial *edge_serial);
483 static void load_application_firmware (struct edgeport_serial *edge_serial);
484
485
486 static void unicode_to_ascii (char *string, short *unicode, int unicode_size);
487
488
489
490
491
492 // ************************************************************************
493 // ************************************************************************
494 // ************************************************************************
495 // ************************************************************************
496
497 /************************************************************************
498 * *
499 * update_edgeport_E2PROM() Compare current versions of *
500 * Boot ROM and Manufacture *
501 * Descriptors with versions *
502 * embedded in this driver *
503 * *
504 ************************************************************************/
update_edgeport_E2PROM(struct edgeport_serial * edge_serial)505 static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial)
506 {
507 __u32 BootCurVer;
508 __u32 BootNewVer;
509 __u8 BootMajorVersion;
510 __u8 BootMinorVersion;
511 __u16 BootBuildNumber;
512 __u8 *BootImage;
513 __u32 BootSize;
514 struct edge_firmware_image_record *record;
515 unsigned char *firmware;
516 int response;
517
518
519 switch (edge_serial->product_info.iDownloadFile) {
520 case EDGE_DOWNLOAD_FILE_I930:
521 BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion;
522 BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion;
523 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber);
524 BootImage = &BootCodeImage_GEN1[0];
525 BootSize = sizeof( BootCodeImage_GEN1 );
526 break;
527
528 case EDGE_DOWNLOAD_FILE_80251:
529 BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion;
530 BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion;
531 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber);
532 BootImage = &BootCodeImage_GEN2[0];
533 BootSize = sizeof( BootCodeImage_GEN2 );
534 break;
535
536 default:
537 return;
538 }
539
540 // Check Boot Image Version
541 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
542 (edge_serial->boot_descriptor.MinorVersion << 16) +
543 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
544
545 BootNewVer = (BootMajorVersion << 24) +
546 (BootMinorVersion << 16) +
547 le16_to_cpu(BootBuildNumber);
548
549 dbg("Current Boot Image version %d.%d.%d",
550 edge_serial->boot_descriptor.MajorVersion,
551 edge_serial->boot_descriptor.MinorVersion,
552 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
553
554
555 if (BootNewVer > BootCurVer) {
556 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
557 edge_serial->boot_descriptor.MajorVersion,
558 edge_serial->boot_descriptor.MinorVersion,
559 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
560 BootMajorVersion,
561 BootMinorVersion,
562 le16_to_cpu(BootBuildNumber));
563
564
565 dbg("Downloading new Boot Image");
566
567 firmware = BootImage;
568
569 for (;;) {
570 record = (struct edge_firmware_image_record *)firmware;
571 response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
572 if (response < 0) {
573 err("rom_write failed (%x, %x, %d)", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len));
574 break;
575 }
576 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
577 if (firmware >= &BootImage[BootSize]) {
578 break;
579 }
580 }
581 } else {
582 dbg("Boot Image -- already up to date");
583 }
584 }
585
586
587 /************************************************************************
588 * *
589 * Get string descriptor from device *
590 * *
591 ************************************************************************/
get_string(struct usb_device * dev,int Id,char * string)592 static int get_string (struct usb_device *dev, int Id, char *string)
593 {
594 struct usb_string_descriptor StringDesc;
595 struct usb_string_descriptor *pStringDesc;
596
597 dbg("%s - USB String ID = %d", __FUNCTION__, Id );
598
599 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
600 return 0;
601 }
602
603 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
604
605 if (!pStringDesc) {
606 return 0;
607 }
608
609 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
610 kfree(pStringDesc);
611 return 0;
612 }
613
614 unicode_to_ascii(string, pStringDesc->wData, pStringDesc->bLength/2-1);
615
616 kfree(pStringDesc);
617 return strlen(string);
618 }
619
620
621 #if 0
622 /************************************************************************
623 *
624 * Get string descriptor from device
625 *
626 ************************************************************************/
627 static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc)
628 {
629 struct usb_string_descriptor StringDesc;
630 struct usb_string_descriptor *pStringDesc;
631
632 dbg("%s - USB String ID = %d", __FUNCTION__, Id );
633
634 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
635 return 0;
636 }
637
638 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
639
640 if (!pStringDesc) {
641 return -1;
642 }
643
644 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
645 kfree(pStringDesc);
646 return -1;
647 }
648
649 *pRetDesc = pStringDesc;
650 return 0;
651 }
652 #endif
653
get_product_info(struct edgeport_serial * edge_serial)654 static void get_product_info(struct edgeport_serial *edge_serial)
655 {
656 struct edgeport_product_info *product_info = &edge_serial->product_info;
657
658 memset (product_info, 0, sizeof(struct edgeport_product_info));
659
660 product_info->ProductId = (__u16)(edge_serial->serial->dev->descriptor.idProduct & ~ION_DEVICE_ID_GENERATION_2);
661 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
662 product_info->ProdInfoVer = 0;
663
664 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
665 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
666 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
667 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
668
669 product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion;
670 product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion;
671 product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber;
672
673 memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate));
674
675 // check if this is 2nd generation hardware
676 if (edge_serial->serial->dev->descriptor.idProduct & ION_DEVICE_ID_GENERATION_2) {
677 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion;
678 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion;
679 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber);
680 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
681 } else {
682 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion;
683 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion;
684 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber);
685 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
686 }
687
688 // Determine Product type and set appropriate flags
689 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
690 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
691 case ION_DEVICE_ID_EDGEPORT_4T:
692 case ION_DEVICE_ID_EDGEPORT_4:
693 case ION_DEVICE_ID_EDGEPORT_2:
694 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
695 case ION_DEVICE_ID_EDGEPORT_8:
696 case ION_DEVICE_ID_EDGEPORT_421:
697 case ION_DEVICE_ID_EDGEPORT_21:
698 case ION_DEVICE_ID_EDGEPORT_2_DIN:
699 case ION_DEVICE_ID_EDGEPORT_4_DIN:
700 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
701 product_info->IsRS232 = 1;
702 break;
703
704 case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485
705 product_info->IsRS422 = 1;
706 product_info->IsRS485 = 1;
707 break;
708
709 case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422
710 case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422
711 product_info->IsRS422 = 1;
712 break;
713 }
714
715 // Dump Product Info structure
716 dbg("**Product Information:");
717 dbg(" ProductId %x", product_info->ProductId );
718 dbg(" NumPorts %d", product_info->NumPorts );
719 dbg(" ProdInfoVer %d", product_info->ProdInfoVer );
720 dbg(" IsServer %d", product_info->IsServer);
721 dbg(" IsRS232 %d", product_info->IsRS232 );
722 dbg(" IsRS422 %d", product_info->IsRS422 );
723 dbg(" IsRS485 %d", product_info->IsRS485 );
724 dbg(" RomSize %d", product_info->RomSize );
725 dbg(" RamSize %d", product_info->RamSize );
726 dbg(" CpuRev %x", product_info->CpuRev );
727 dbg(" BoardRev %x", product_info->BoardRev);
728 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
729 product_info->BootMinorVersion,
730 le16_to_cpu(product_info->BootBuildNumber));
731 dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion,
732 product_info->FirmwareMinorVersion,
733 le16_to_cpu(product_info->FirmwareBuildNumber));
734 dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0],
735 product_info->ManufactureDescDate[1],
736 product_info->ManufactureDescDate[2]+1900);
737 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
738
739 }
740
741
742 /************************************************************************/
743 /************************************************************************/
744 /* U S B C A L L B A C K F U N C T I O N S */
745 /* U S B C A L L B A C K F U N C T I O N S */
746 /************************************************************************/
747 /************************************************************************/
748
749 /*****************************************************************************
750 * edge_interrupt_callback
751 * this is the callback function for when we have received data on the
752 * interrupt endpoint.
753 *****************************************************************************/
edge_interrupt_callback(struct urb * urb)754 static void edge_interrupt_callback (struct urb *urb)
755 {
756 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
757 struct edgeport_port *edge_port;
758 struct usb_serial_port *port;
759 unsigned char *data = urb->transfer_buffer;
760 int length = urb->actual_length;
761 int bytes_avail;
762 int position;
763 int txCredits;
764 int portNumber;
765 int result;
766
767 dbg("%s", __FUNCTION__);
768
769 if (serial_paranoia_check (edge_serial->serial, __FUNCTION__)) {
770 return;
771 }
772
773 if (urb->status) {
774 dbg("%s - nonzero control read status received: %d", __FUNCTION__, urb->status);
775 return;
776 }
777
778 // process this interrupt-read even if there are no ports open
779 if (length) {
780 usb_serial_debug_data (__FILE__, __FUNCTION__, length, data);
781
782 if (length > 1) {
783 bytes_avail = data[0] | (data[1] << 8);
784 if (bytes_avail) {
785 edge_serial->rxBytesAvail += bytes_avail;
786 dbg("%s - bytes_avail = %d, rxBytesAvail %d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail);
787
788 if ((edge_serial->rxBytesAvail > 0) &&
789 (edge_serial->read_urb->status != -EINPROGRESS)) {
790 dbg(" --- Posting a read");
791
792 /* we have pending bytes on the bulk in pipe, send a request */
793 edge_serial->read_urb->dev = edge_serial->serial->dev;
794 result = usb_submit_urb(edge_serial->read_urb);
795 if (result) {
796 dbg("%s - usb_submit_urb(read bulk) failed with result = %d", __FUNCTION__, result);
797 }
798 }
799 }
800 }
801 /* grab the txcredits for the ports if available */
802 position = 2;
803 portNumber = 0;
804 while ((position < length) && (portNumber < edge_serial->serial->num_ports)) {
805 txCredits = data[position] | (data[position+1] << 8);
806 if (txCredits) {
807 port = &edge_serial->serial->port[portNumber];
808 if (port_paranoia_check (port, __FUNCTION__) == 0) {
809 edge_port = (struct edgeport_port *)port->private;
810 if (edge_port->open) {
811 edge_port->txCredits += txCredits;
812 dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);
813
814 /* tell the tty driver that something has changed */
815 if (edge_port->port->tty)
816 wake_up_interruptible(&edge_port->port->tty->write_wait);
817
818 // Since we have more credit, check if more data can be sent
819 send_more_port_data(edge_serial, edge_port);
820 }
821 }
822 }
823 position += 2;
824 ++portNumber;
825 }
826 }
827 }
828
829
830 /*****************************************************************************
831 * edge_bulk_in_callback
832 * this is the callback function for when we have received data on the
833 * bulk in endpoint.
834 *****************************************************************************/
edge_bulk_in_callback(struct urb * urb)835 static void edge_bulk_in_callback (struct urb *urb)
836 {
837 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
838 unsigned char *data = urb->transfer_buffer;
839 int status;
840 __u16 raw_data_length;
841
842 dbg("%s", __FUNCTION__);
843
844 if (serial_paranoia_check (edge_serial->serial, __FUNCTION__)) {
845 return;
846 }
847
848 if (urb->status) {
849 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
850 return;
851 }
852
853 if (urb->actual_length) {
854 raw_data_length = urb->actual_length;
855
856 usb_serial_debug_data (__FILE__, __FUNCTION__, raw_data_length, data);
857
858 /* decrement our rxBytes available by the number that we just got */
859 edge_serial->rxBytesAvail -= raw_data_length;
860
861 dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail);
862
863 process_rcvd_data (edge_serial, data, urb->actual_length);
864
865 /* check to see if there's any more data for us to read */
866 if ((edge_serial->rxBytesAvail > 0) &&
867 (edge_serial->read_urb->status != -EINPROGRESS)) {
868 dbg(" --- Posting a read");
869
870 /* there is, so resubmit our urb */
871 edge_serial->read_urb->dev = edge_serial->serial->dev;
872 status = usb_submit_urb(edge_serial->read_urb);
873 if (status) {
874 err("%s - usb_submit_urb(read bulk) failed, status = %d", __FUNCTION__, status);
875 }
876 }
877 }
878 }
879
880
881 /*****************************************************************************
882 * edge_bulk_out_data_callback
883 * this is the callback function for when we have finished sending serial data
884 * on the bulk out endpoint.
885 *****************************************************************************/
edge_bulk_out_data_callback(struct urb * urb)886 static void edge_bulk_out_data_callback (struct urb *urb)
887 {
888 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
889 struct tty_struct *tty;
890
891 dbg("%s", __FUNCTION__);
892
893 if (port_paranoia_check (edge_port->port, __FUNCTION__)) {
894 return;
895 }
896
897 if (urb->status) {
898 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
899 }
900
901 tty = edge_port->port->tty;
902
903 if (tty && edge_port->open) {
904 /* let the tty driver wakeup if it has a special write_wakeup function */
905 tty_wakeup(tty);
906 }
907
908 // Release the Write URB
909 edge_port->write_in_progress = FALSE;
910
911 // Check if more data needs to be sent
912 send_more_port_data((struct edgeport_serial *)(edge_port->port->serial->private), edge_port);
913 }
914
915
916 /*****************************************************************************
917 * BulkOutCmdCallback
918 * this is the callback function for when we have finished sending a command
919 * on the bulk out endpoint.
920 *****************************************************************************/
edge_bulk_out_cmd_callback(struct urb * urb)921 static void edge_bulk_out_cmd_callback (struct urb *urb)
922 {
923 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
924 struct tty_struct *tty;
925 int status = urb->status;
926
927 dbg("%s", __FUNCTION__);
928
929 CmdUrbs--;
930 dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
931
932
933 /* clean up the transfer buffer */
934 if (urb->transfer_buffer != NULL) {
935 kfree(urb->transfer_buffer);
936 }
937
938 // Free the command urb
939 usb_unlink_urb (urb);
940 usb_free_urb (urb);
941
942 if (port_paranoia_check (edge_port->port, __FUNCTION__)) {
943 return;
944 }
945
946 if (status) {
947 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status);
948 return;
949 }
950
951 /* Get pointer to tty */
952 tty = edge_port->port->tty;
953
954 /* tell the tty driver that something has changed */
955 if (tty && edge_port->open)
956 wake_up_interruptible(&tty->write_wait);
957
958 /* we have completed the command */
959 edge_port->commandPending = FALSE;
960 wake_up_interruptible(&edge_port->wait_command);
961 }
962
963
964 /*****************************************************************************
965 * Driver tty interface functions
966 *****************************************************************************/
967
968 /*****************************************************************************
969 * SerialOpen
970 * this function is called by the tty driver when a port is opened
971 * If successful, we return 0
972 * Otherwise we return a negative error number.
973 *****************************************************************************/
edge_open(struct usb_serial_port * port,struct file * filp)974 static int edge_open (struct usb_serial_port *port, struct file * filp)
975 {
976 struct edgeport_port *edge_port = (struct edgeport_port *)port->private;
977 struct usb_serial *serial;
978 struct edgeport_serial *edge_serial;
979 int response;
980 int timeout;
981
982 if (port_paranoia_check (port, __FUNCTION__))
983 return -ENODEV;
984
985 dbg("%s - port %d", __FUNCTION__, port->number);
986
987 if (edge_port == NULL)
988 return -ENODEV;
989
990 /* force low_latency on so that our tty_push actually forces the data through,
991 otherwise it is scheduled, and with high data rates (like with OHCI) data
992 can get lost. */
993 if (port->tty)
994 port->tty->low_latency = 1;
995
996 /* see if we've set up our endpoint info yet (can't set it up in edge_startup
997 as the structures were not set up at that time.) */
998 serial = port->serial;
999 edge_serial = (struct edgeport_serial *)serial->private;
1000 if (edge_serial == NULL) {
1001 return -ENODEV;
1002 }
1003 if (edge_serial->interrupt_in_buffer == NULL) {
1004 struct usb_serial_port *port0 = &serial->port[0];
1005
1006 /* not set up yet, so do it now */
1007 edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer;
1008 edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress;
1009 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
1010 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
1011 edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress;
1012 edge_serial->read_urb = port0->read_urb;
1013 edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress;
1014
1015 /* set up our interrupt urb */
1016 FILL_INT_URB(edge_serial->interrupt_read_urb,
1017 serial->dev,
1018 usb_rcvintpipe(serial->dev,
1019 port0->interrupt_in_endpointAddress),
1020 port0->interrupt_in_buffer,
1021 edge_serial->interrupt_read_urb->transfer_buffer_length,
1022 edge_interrupt_callback, edge_serial,
1023 edge_serial->interrupt_read_urb->interval);
1024
1025 /* set up our bulk in urb */
1026 FILL_BULK_URB(edge_serial->read_urb, serial->dev,
1027 usb_rcvbulkpipe(serial->dev, port0->bulk_in_endpointAddress),
1028 port0->bulk_in_buffer,
1029 edge_serial->read_urb->transfer_buffer_length,
1030 edge_bulk_in_callback, edge_serial);
1031
1032 /* start interrupt read for this edgeport
1033 * this interrupt will continue as long as the edgeport is connected */
1034 response = usb_submit_urb (edge_serial->interrupt_read_urb);
1035 if (response) {
1036 err("%s - Error %d submitting control urb", __FUNCTION__, response);
1037 }
1038 }
1039
1040 /* initialize our wait queues */
1041 init_waitqueue_head(&edge_port->wait_open);
1042 init_waitqueue_head(&edge_port->wait_chase);
1043 init_waitqueue_head(&edge_port->delta_msr_wait);
1044 init_waitqueue_head(&edge_port->wait_command);
1045
1046 /* initialize our icount structure */
1047 memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1048
1049 /* initialize our port settings */
1050 edge_port->txCredits = 0; /* Can't send any data yet */
1051 edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */
1052 edge_port->chaseResponsePending = FALSE;
1053
1054 /* send a open port command */
1055 edge_port->openPending = TRUE;
1056 edge_port->open = FALSE;
1057 response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0);
1058
1059 if (response < 0) {
1060 err("%s - error sending open port command", __FUNCTION__);
1061 edge_port->openPending = FALSE;
1062 return -ENODEV;
1063 }
1064
1065 /* now wait for the port to be completly opened */
1066 timeout = OPEN_TIMEOUT;
1067 while (timeout && edge_port->openPending == TRUE) {
1068 timeout = interruptible_sleep_on_timeout (&edge_port->wait_open, timeout);
1069 }
1070
1071 if (edge_port->open == FALSE) {
1072 /* open timed out */
1073 dbg("%s - open timedout", __FUNCTION__);
1074 edge_port->openPending = FALSE;
1075 return -ENODEV;
1076 }
1077
1078 /* create the txfifo */
1079 edge_port->txfifo.head = 0;
1080 edge_port->txfifo.tail = 0;
1081 edge_port->txfifo.count = 0;
1082 edge_port->txfifo.size = edge_port->maxTxCredits;
1083 edge_port->txfifo.fifo = kmalloc (edge_port->maxTxCredits, GFP_KERNEL);
1084
1085 if (!edge_port->txfifo.fifo) {
1086 dbg("%s - no memory", __FUNCTION__);
1087 edge_close (port, filp);
1088 return -ENOMEM;
1089 }
1090
1091 /* Allocate a URB for the write */
1092 edge_port->write_urb = usb_alloc_urb (0);
1093
1094 if (!edge_port->write_urb) {
1095 dbg("%s - no memory", __FUNCTION__);
1096 edge_close (port, filp);
1097 return -ENOMEM;
1098 }
1099
1100 dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits);
1101
1102 dbg("%s exited", __FUNCTION__);
1103
1104 return 0;
1105 }
1106
1107
1108 /************************************************************************
1109 *
1110 * block_until_chase_response
1111 *
1112 * This function will block the close until one of the following:
1113 * 1. Response to our Chase comes from Edgeport
1114 * 2. A timout of 10 seconds without activity has expired
1115 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
1116 *
1117 ************************************************************************/
block_until_chase_response(struct edgeport_port * edge_port)1118 static void block_until_chase_response(struct edgeport_port *edge_port)
1119 {
1120 __u16 lastCredits;
1121 int timeout = 1*HZ;
1122 int wait = 10;
1123
1124 while (1) {
1125 // Save Last credits
1126 lastCredits = edge_port->txCredits;
1127
1128 // Did we get our Chase response
1129 if (edge_port->chaseResponsePending == FALSE) {
1130 dbg("%s - Got Chase Response", __FUNCTION__);
1131
1132 // did we get all of our credit back?
1133 if (edge_port->txCredits == edge_port->maxTxCredits ) {
1134 dbg("%s - Got all credits", __FUNCTION__);
1135 return;
1136 }
1137 }
1138
1139 // Block the thread for a while
1140 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1141
1142 if (lastCredits == edge_port->txCredits) {
1143 // No activity.. count down.
1144 wait--;
1145 if (wait == 0) {
1146 edge_port->chaseResponsePending = FALSE;
1147 dbg("%s - Chase TIMEOUT", __FUNCTION__);
1148 return;
1149 }
1150 } else {
1151 // Reset timout value back to 10 seconds
1152 dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits);
1153 wait = 10;
1154 }
1155 }
1156 }
1157
1158
1159 /************************************************************************
1160 *
1161 * block_until_tx_empty
1162 *
1163 * This function will block the close until one of the following:
1164 * 1. TX count are 0
1165 * 2. The edgeport has stopped
1166 * 3. A timout of 3 seconds without activity has expired
1167 *
1168 ************************************************************************/
block_until_tx_empty(struct edgeport_port * edge_port)1169 static void block_until_tx_empty (struct edgeport_port *edge_port)
1170 {
1171 struct TxFifo *fifo = &edge_port->txfifo;
1172 __u32 lastCount;
1173 int timeout = HZ/10;
1174 int wait = 30;
1175
1176 while (1) {
1177 // Save Last count
1178 lastCount = fifo->count;
1179
1180 // Is the Edgeport Buffer empty?
1181 if (lastCount == 0) {
1182 dbg("%s - TX Buffer Empty", __FUNCTION__);
1183 return;
1184 }
1185
1186 // Block the thread for a while
1187 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1188
1189 dbg("%s wait", __FUNCTION__);
1190
1191 if (lastCount == fifo->count) {
1192 // No activity.. count down.
1193 wait--;
1194 if (wait == 0) {
1195 dbg("%s - TIMEOUT", __FUNCTION__);
1196 return;
1197 }
1198 } else {
1199 // Reset timout value back to seconds
1200 wait = 30;
1201 }
1202 }
1203 }
1204
1205
1206 /*****************************************************************************
1207 * edge_close
1208 * this function is called by the tty driver when a port is closed
1209 *****************************************************************************/
edge_close(struct usb_serial_port * port,struct file * filp)1210 static void edge_close (struct usb_serial_port *port, struct file * filp)
1211 {
1212 struct usb_serial *serial;
1213 struct edgeport_serial *edge_serial;
1214 struct edgeport_port *edge_port;
1215 int status;
1216
1217 if (port_paranoia_check (port, __FUNCTION__))
1218 return;
1219
1220 dbg("%s - port %d", __FUNCTION__, port->number);
1221
1222 serial = get_usb_serial (port, __FUNCTION__);
1223 if (!serial)
1224 return;
1225
1226 edge_serial = (struct edgeport_serial *)serial->private;
1227 edge_port = (struct edgeport_port *)port->private;
1228 if ((edge_serial == NULL) || (edge_port == NULL))
1229 return;
1230
1231 if (serial->dev) {
1232 // block until tx is empty
1233 block_until_tx_empty(edge_port);
1234
1235 edge_port->closePending = TRUE;
1236
1237 /* flush and chase */
1238 edge_port->chaseResponsePending = TRUE;
1239
1240 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1241 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1242 if (status == 0) {
1243 // block until chase finished
1244 block_until_chase_response(edge_port);
1245 } else {
1246 edge_port->chaseResponsePending = FALSE;
1247 }
1248
1249 /* close the port */
1250 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
1251 send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
1252
1253 //port->close = TRUE;
1254 edge_port->closePending = FALSE;
1255 edge_port->open = FALSE;
1256 edge_port->openPending = FALSE;
1257
1258 if (edge_port->write_urb) {
1259 usb_unlink_urb (edge_port->write_urb);
1260 }
1261 }
1262
1263 if (edge_port->write_urb) {
1264 /* if this urb had a transfer buffer already (old transfer) free it */
1265 if (edge_port->write_urb->transfer_buffer != NULL) {
1266 kfree(edge_port->write_urb->transfer_buffer);
1267 }
1268 usb_free_urb (edge_port->write_urb);
1269 }
1270 if (edge_port->txfifo.fifo) {
1271 kfree(edge_port->txfifo.fifo);
1272 }
1273
1274 dbg("%s exited", __FUNCTION__);
1275 }
1276
1277 /*****************************************************************************
1278 * SerialWrite
1279 * this function is called by the tty driver when data should be written to
1280 * the port.
1281 * If successful, we return the number of bytes written, otherwise we return
1282 * a negative error number.
1283 *****************************************************************************/
edge_write(struct usb_serial_port * port,int from_user,const unsigned char * data,int count)1284 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
1285 {
1286 struct edgeport_port *edge_port = (struct edgeport_port *)port->private;
1287 struct TxFifo *fifo;
1288 int copySize;
1289 int bytesleft;
1290 int firsthalf;
1291 int secondhalf;
1292
1293 dbg("%s - port %d", __FUNCTION__, port->number);
1294
1295 if (edge_port == NULL)
1296 return -ENODEV;
1297
1298 // get a pointer to the Tx fifo
1299 fifo = &edge_port->txfifo;
1300
1301 // calculate number of bytes to put in fifo
1302 copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));
1303
1304 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__,
1305 port->number, count, edge_port->txCredits - fifo->count, copySize);
1306
1307 /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
1308 if (copySize == 0) {
1309 dbg("%s - copySize = Zero", __FUNCTION__);
1310 return 0;
1311 }
1312
1313 // queue the data
1314 // since we can never overflow the buffer we do not have to check for full condition
1315
1316 // the copy is done is two parts -- first fill to the end of the buffer
1317 // then copy the reset from the start of the buffer
1318
1319 bytesleft = fifo->size - fifo->head;
1320 firsthalf = min (bytesleft, copySize);
1321 dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft);
1322
1323 /* now copy our data */
1324 if (from_user) {
1325 if (copy_from_user(&fifo->fifo[fifo->head], data, firsthalf))
1326 return -EFAULT;
1327 } else {
1328 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1329 }
1330
1331 // update the index and size
1332 fifo->head += firsthalf;
1333 fifo->count += firsthalf;
1334
1335 // wrap the index
1336 if (fifo->head == fifo->size) {
1337 fifo->head = 0;
1338 }
1339
1340 secondhalf = copySize-firsthalf;
1341
1342 if (secondhalf) {
1343 dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf);
1344 if (from_user) {
1345 if (copy_from_user(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf))
1346 return -EFAULT;
1347 } else {
1348 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1349 }
1350 // update the index and size
1351 fifo->count += secondhalf;
1352 fifo->head += secondhalf;
1353 // No need to check for wrap since we can not get to end of fifo in this part
1354 }
1355
1356 if (copySize) {
1357 usb_serial_debug_data (__FILE__, __FUNCTION__, copySize, data);
1358 }
1359
1360 send_more_port_data((struct edgeport_serial *)port->serial->private, edge_port);
1361
1362 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count);
1363
1364 return copySize;
1365 }
1366
1367
1368 /************************************************************************
1369 *
1370 * send_more_port_data()
1371 *
1372 * This routine attempts to write additional UART transmit data
1373 * to a port over the USB bulk pipe. It is called (1) when new
1374 * data has been written to a port's TxBuffer from higher layers
1375 * (2) when the peripheral sends us additional TxCredits indicating
1376 * that it can accept more Tx data for a given port; and (3) when
1377 * a bulk write completes successfully and we want to see if we
1378 * can transmit more.
1379 *
1380 ************************************************************************/
send_more_port_data(struct edgeport_serial * edge_serial,struct edgeport_port * edge_port)1381 static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port)
1382 {
1383 struct TxFifo *fifo = &edge_port->txfifo;
1384 struct urb *urb;
1385 unsigned char *buffer;
1386 int status;
1387 int count;
1388 int bytesleft;
1389 int firsthalf;
1390 int secondhalf;
1391
1392 dbg("%s(%d)", __FUNCTION__, edge_port->port->number);
1393
1394 if (edge_port->write_in_progress ||
1395 !edge_port->open ||
1396 (fifo->count == 0)) {
1397 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress);
1398 return;
1399 }
1400
1401 // since the amount of data in the fifo will always fit into the
1402 // edgeport buffer we do not need to check the write length
1403
1404 // Do we have enough credits for this port to make it worthwhile
1405 // to bother queueing a write. If it's too small, say a few bytes,
1406 // it's better to wait for more credits so we can do a larger
1407 // write.
1408 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits)) {
1409 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits );
1410 return;
1411 }
1412
1413 // lock this write
1414 edge_port->write_in_progress = TRUE;
1415
1416 // get a pointer to the write_urb
1417 urb = edge_port->write_urb;
1418
1419 /* if this urb had a transfer buffer already (old transfer) free it */
1420 if (urb->transfer_buffer != NULL) {
1421 kfree(urb->transfer_buffer);
1422 urb->transfer_buffer = NULL;
1423 }
1424
1425 /* build the data header for the buffer and port that we are about to send out */
1426 count = fifo->count;
1427 buffer = kmalloc (count+2, GFP_ATOMIC);
1428 if (buffer == NULL) {
1429 err("%s - no more kernel memory...", __FUNCTION__);
1430 edge_port->write_in_progress = FALSE;
1431 return;
1432 }
1433 buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
1434 buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count);
1435
1436 /* now copy our data */
1437 bytesleft = fifo->size - fifo->tail;
1438 firsthalf = min (bytesleft, count);
1439 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1440 fifo->tail += firsthalf;
1441 fifo->count -= firsthalf;
1442 if (fifo->tail == fifo->size) {
1443 fifo->tail = 0;
1444 }
1445
1446 secondhalf = count-firsthalf;
1447 if (secondhalf) {
1448 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf);
1449 fifo->tail += secondhalf;
1450 fifo->count -= secondhalf;
1451 }
1452
1453 if (count) {
1454 usb_serial_debug_data (__FILE__, __FUNCTION__, count, &buffer[2]);
1455 }
1456
1457 /* fill up the urb with all of our data and submit it */
1458 FILL_BULK_URB (urb, edge_serial->serial->dev,
1459 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
1460 buffer, count+2, edge_bulk_out_data_callback, edge_port);
1461
1462 /* set the USB_BULK_QUEUE flag so that we can shove a bunch of urbs at once down the pipe */
1463 urb->transfer_flags |= USB_QUEUE_BULK;
1464
1465 urb->dev = edge_serial->serial->dev;
1466 /* decrement the number of credits we have by the number we just sent */
1467 edge_port->txCredits -= count;
1468 edge_port->icount.tx += count;
1469
1470 status = usb_submit_urb(urb);
1471 if (status) {
1472 /* something went wrong */
1473 dbg("%s - usb_submit_urb(write bulk) failed", __FUNCTION__);
1474 edge_port->write_in_progress = FALSE;
1475
1476 /*revert the count if something bad happened...*/
1477 edge_port->txCredits += count;
1478 edge_port->icount.tx -= count;
1479 }
1480 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count);
1481 }
1482
1483
1484 /*****************************************************************************
1485 * edge_write_room
1486 * this function is called by the tty driver when it wants to know how many
1487 * bytes of data we can accept for a specific port.
1488 * If successful, we return the amount of room that we have for this port
1489 * (the txCredits),
1490 * Otherwise we return a negative error number.
1491 *****************************************************************************/
edge_write_room(struct usb_serial_port * port)1492 static int edge_write_room (struct usb_serial_port *port)
1493 {
1494 struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
1495 int room;
1496
1497 dbg("%s", __FUNCTION__);
1498
1499 if (edge_port == NULL)
1500 return -ENODEV;
1501 if (edge_port->closePending == TRUE)
1502 return -ENODEV;
1503
1504 dbg("%s - port %d", __FUNCTION__, port->number);
1505
1506 if (!edge_port->open) {
1507 dbg("%s - port not opened", __FUNCTION__);
1508 return -EINVAL;
1509 }
1510
1511 // total of both buffers is still txCredit
1512 room = edge_port->txCredits - edge_port->txfifo.count;
1513
1514 dbg("%s - returns %d", __FUNCTION__, room);
1515 return room;
1516 }
1517
1518
1519 /*****************************************************************************
1520 * edge_chars_in_buffer
1521 * this function is called by the tty driver when it wants to know how many
1522 * bytes of data we currently have outstanding in the port (data that has
1523 * been written, but hasn't made it out the port yet)
1524 * If successful, we return the number of bytes left to be written in the
1525 * system,
1526 * Otherwise we return a negative error number.
1527 *****************************************************************************/
edge_chars_in_buffer(struct usb_serial_port * port)1528 static int edge_chars_in_buffer (struct usb_serial_port *port)
1529 {
1530 struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
1531 int num_chars;
1532
1533 dbg("%s", __FUNCTION__);
1534
1535 if (edge_port == NULL)
1536 return -ENODEV;
1537 if (edge_port->closePending == TRUE)
1538 return -ENODEV;
1539
1540 if (!edge_port->open) {
1541 dbg("%s - port not opened", __FUNCTION__);
1542 return -EINVAL;
1543 }
1544
1545 num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;
1546 if (num_chars) {
1547 dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars);
1548 }
1549
1550 return num_chars;
1551 }
1552
1553
1554 /*****************************************************************************
1555 * SerialThrottle
1556 * this function is called by the tty driver when it wants to stop the data
1557 * being read from the port.
1558 *****************************************************************************/
edge_throttle(struct usb_serial_port * port)1559 static void edge_throttle (struct usb_serial_port *port)
1560 {
1561 struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
1562 struct tty_struct *tty;
1563 int status;
1564
1565 dbg("%s - port %d", __FUNCTION__, port->number);
1566
1567 if (edge_port == NULL)
1568 return;
1569
1570 if (!edge_port->open) {
1571 dbg("%s - port not opened", __FUNCTION__);
1572 return;
1573 }
1574
1575 tty = port->tty;
1576 if (!tty) {
1577 dbg ("%s - no tty available", __FUNCTION__);
1578 return;
1579 }
1580
1581 /* if we are implementing XON/XOFF, send the stop character */
1582 if (I_IXOFF(tty)) {
1583 unsigned char stop_char = STOP_CHAR(tty);
1584 status = edge_write (port, 0, &stop_char, 1);
1585 if (status <= 0) {
1586 return;
1587 }
1588 }
1589
1590 /* if we are implementing RTS/CTS, toggle that line */
1591 if (tty->termios->c_cflag & CRTSCTS) {
1592 edge_port->shadowMCR &= ~MCR_RTS;
1593 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1594 if (status != 0) {
1595 return;
1596 }
1597 }
1598
1599 return;
1600 }
1601
1602
1603 /*****************************************************************************
1604 * edge_unthrottle
1605 * this function is called by the tty driver when it wants to resume the data
1606 * being read from the port (called after SerialThrottle is called)
1607 *****************************************************************************/
edge_unthrottle(struct usb_serial_port * port)1608 static void edge_unthrottle (struct usb_serial_port *port)
1609 {
1610 struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
1611 struct tty_struct *tty;
1612 int status;
1613
1614 dbg("%s - port %d", __FUNCTION__, port->number);
1615
1616 if (edge_port == NULL)
1617 return;
1618
1619 if (!edge_port->open) {
1620 dbg("%s - port not opened", __FUNCTION__);
1621 return;
1622 }
1623
1624 tty = port->tty;
1625 if (!tty) {
1626 dbg ("%s - no tty available", __FUNCTION__);
1627 return;
1628 }
1629
1630 /* if we are implementing XON/XOFF, send the start character */
1631 if (I_IXOFF(tty)) {
1632 unsigned char start_char = START_CHAR(tty);
1633 status = edge_write (port, 0, &start_char, 1);
1634 if (status <= 0) {
1635 return;
1636 }
1637 }
1638
1639 /* if we are implementing RTS/CTS, toggle that line */
1640 if (tty->termios->c_cflag & CRTSCTS) {
1641 edge_port->shadowMCR |= MCR_RTS;
1642 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1643 if (status != 0) {
1644 return;
1645 }
1646 }
1647
1648 return;
1649 }
1650
1651
1652 /*****************************************************************************
1653 * SerialSetTermios
1654 * this function is called by the tty driver when it wants to change the termios structure
1655 *****************************************************************************/
edge_set_termios(struct usb_serial_port * port,struct termios * old_termios)1656 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1657 {
1658 struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
1659 struct tty_struct *tty = port->tty;
1660 unsigned int cflag;
1661
1662 if (!port->tty || !port->tty->termios) {
1663 dbg ("%s - no tty or termios", __FUNCTION__);
1664 return;
1665 }
1666
1667 cflag = tty->termios->c_cflag;
1668 /* check that they really want us to change something */
1669 if (old_termios) {
1670 if ((cflag == old_termios->c_cflag) &&
1671 (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1672 dbg("%s - nothing to change", __FUNCTION__);
1673 return;
1674 }
1675 }
1676
1677 dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
1678 tty->termios->c_cflag,
1679 RELEVANT_IFLAG(tty->termios->c_iflag));
1680 if (old_termios) {
1681 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
1682 old_termios->c_cflag,
1683 RELEVANT_IFLAG(old_termios->c_iflag));
1684 }
1685
1686 dbg("%s - port %d", __FUNCTION__, port->number);
1687
1688 if (edge_port == NULL)
1689 return;
1690
1691 if (!edge_port->open) {
1692 dbg("%s - port not opened", __FUNCTION__);
1693 return;
1694 }
1695
1696 /* change the port settings to the new ones specified */
1697 change_port_settings (edge_port, old_termios);
1698
1699 return;
1700 }
1701
1702
1703 /*****************************************************************************
1704 * get_lsr_info - get line status register info
1705 *
1706 * Purpose: Let user call ioctl() to get info when the UART physically
1707 * is emptied. On bus types like RS485, the transmitter must
1708 * release the bus after transmitting. This must be done when
1709 * the transmit shift register is empty, not be done when the
1710 * transmit holding register is empty. This functionality
1711 * allows an RS485 driver to be written in user space.
1712 *****************************************************************************/
get_lsr_info(struct edgeport_port * edge_port,unsigned int * value)1713 static int get_lsr_info(struct edgeport_port *edge_port, unsigned int *value)
1714 {
1715 unsigned int result = 0;
1716
1717 if (edge_port->maxTxCredits == edge_port->txCredits &&
1718 edge_port->txfifo.count == 0) {
1719 dbg("%s -- Empty", __FUNCTION__);
1720 result = TIOCSER_TEMT;
1721 }
1722
1723 if (copy_to_user(value, &result, sizeof(int)))
1724 return -EFAULT;
1725 return 0;
1726 }
1727
get_number_bytes_avail(struct edgeport_port * edge_port,unsigned int * value)1728 static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int *value)
1729 {
1730 unsigned int result = 0;
1731 struct tty_struct *tty = edge_port->port->tty;
1732
1733 if (!tty)
1734 return -ENOIOCTLCMD;
1735
1736 result = tty->read_cnt;
1737
1738 dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result);
1739 if (copy_to_user(value, &result, sizeof(int)))
1740 return -EFAULT;
1741 //return 0;
1742 return -ENOIOCTLCMD;
1743 }
1744
set_modem_info(struct edgeport_port * edge_port,unsigned int cmd,unsigned int * value)1745 static int set_modem_info(struct edgeport_port *edge_port, unsigned int cmd, unsigned int *value)
1746 {
1747 unsigned int mcr = edge_port->shadowMCR;
1748 unsigned int arg;
1749
1750 if (copy_from_user(&arg, value, sizeof(int)))
1751 return -EFAULT;
1752
1753 switch (cmd) {
1754 case TIOCMBIS:
1755 if (arg & TIOCM_RTS)
1756 mcr |= MCR_RTS;
1757 if (arg & TIOCM_DTR)
1758 mcr |= MCR_DTR;
1759 if (arg & TIOCM_LOOP)
1760 mcr |= MCR_LOOPBACK;
1761 break;
1762
1763 case TIOCMBIC:
1764 if (arg & TIOCM_RTS)
1765 mcr &= ~MCR_RTS;
1766 if (arg & TIOCM_DTR)
1767 mcr &= ~MCR_DTR;
1768 if (arg & TIOCM_LOOP)
1769 mcr &= ~MCR_LOOPBACK;
1770 break;
1771
1772 case TIOCMSET:
1773 /* turn off the RTS and DTR and LOOPBACK
1774 * and then only turn on what was asked to */
1775 mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK);
1776 mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0);
1777 mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0);
1778 mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0);
1779 break;
1780 }
1781
1782 edge_port->shadowMCR = mcr;
1783
1784 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1785
1786 return 0;
1787 }
1788
get_modem_info(struct edgeport_port * edge_port,unsigned int * value)1789 static int get_modem_info(struct edgeport_port *edge_port, unsigned int *value)
1790 {
1791 unsigned int result = 0;
1792 unsigned int msr = edge_port->shadowMSR;
1793 unsigned int mcr = edge_port->shadowMCR;
1794
1795 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1796 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1797 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1798 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1799 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1800 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1801
1802
1803 dbg("%s -- %x", __FUNCTION__, result);
1804
1805 if (copy_to_user(value, &result, sizeof(int)))
1806 return -EFAULT;
1807 return 0;
1808 }
1809
1810
1811
get_serial_info(struct edgeport_port * edge_port,struct serial_struct * retinfo)1812 static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct * retinfo)
1813 {
1814 struct serial_struct tmp;
1815
1816 if (!retinfo)
1817 return -EFAULT;
1818
1819 memset(&tmp, 0, sizeof(tmp));
1820
1821 tmp.type = PORT_16550A;
1822 tmp.line = edge_port->port->serial->minor;
1823 tmp.port = edge_port->port->number;
1824 tmp.irq = 0;
1825 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1826 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1827 tmp.baud_base = 9600;
1828 tmp.close_delay = 5*HZ;
1829 tmp.closing_wait = 30*HZ;
1830 // tmp.custom_divisor = state->custom_divisor;
1831 // tmp.hub6 = state->hub6;
1832 // tmp.io_type = state->io_type;
1833
1834
1835 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1836 return -EFAULT;
1837 return 0;
1838 }
1839
1840
1841
1842 /*****************************************************************************
1843 * SerialIoctl
1844 * this function handles any ioctl calls to the driver
1845 *****************************************************************************/
edge_ioctl(struct usb_serial_port * port,struct file * file,unsigned int cmd,unsigned long arg)1846 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
1847 {
1848 struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
1849 struct async_icount cnow;
1850 struct async_icount cprev;
1851 struct serial_icounter_struct icount;
1852
1853
1854 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
1855
1856 switch (cmd) {
1857 // return number of bytes available
1858 case TIOCINQ:
1859 dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
1860 return get_number_bytes_avail(edge_port, (unsigned int *) arg);
1861 break;
1862
1863 case TIOCSERGETLSR:
1864 dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
1865 return get_lsr_info(edge_port, (unsigned int *) arg);
1866 return 0;
1867
1868 case TIOCMBIS:
1869 case TIOCMBIC:
1870 case TIOCMSET:
1871 dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, port->number);
1872 return set_modem_info(edge_port, cmd, (unsigned int *) arg);
1873
1874 case TIOCMGET:
1875 dbg("%s (%d) TIOCMGET", __FUNCTION__, port->number);
1876 return get_modem_info(edge_port, (unsigned int *) arg);
1877
1878 case TIOCGSERIAL:
1879 dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number);
1880 return get_serial_info(edge_port, (struct serial_struct *) arg);
1881
1882 case TIOCSSERIAL:
1883 dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number);
1884 break;
1885
1886 case TIOCMIWAIT:
1887 dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
1888 cprev = edge_port->icount;
1889 while (1) {
1890 interruptible_sleep_on(&edge_port->delta_msr_wait);
1891 /* see if a signal did it */
1892 if (signal_pending(current))
1893 return -ERESTARTSYS;
1894 cnow = edge_port->icount;
1895 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1896 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1897 return -EIO; /* no change => error */
1898 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1899 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1900 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
1901 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
1902 return 0;
1903 }
1904 cprev = cnow;
1905 }
1906 /* NOTREACHED */
1907 break;
1908
1909 case TIOCGICOUNT:
1910 cnow = edge_port->icount;
1911 memset(&icount, 0, sizeof(icount));
1912 icount.cts = cnow.cts;
1913 icount.dsr = cnow.dsr;
1914 icount.rng = cnow.rng;
1915 icount.dcd = cnow.dcd;
1916 icount.rx = cnow.rx;
1917 icount.tx = cnow.tx;
1918 icount.frame = cnow.frame;
1919 icount.overrun = cnow.overrun;
1920 icount.parity = cnow.parity;
1921 icount.brk = cnow.brk;
1922 icount.buf_overrun = cnow.buf_overrun;
1923
1924 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx );
1925 if (copy_to_user((void *)arg, &icount, sizeof(icount)))
1926 return -EFAULT;
1927 return 0;
1928 }
1929
1930 return -ENOIOCTLCMD;
1931 }
1932
1933
1934 /*****************************************************************************
1935 * SerialBreak
1936 * this function sends a break to the port
1937 *****************************************************************************/
edge_break(struct usb_serial_port * port,int break_state)1938 static void edge_break (struct usb_serial_port *port, int break_state)
1939 {
1940 struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
1941 int status;
1942
1943 /* flush and chase */
1944 edge_port->chaseResponsePending = TRUE;
1945
1946 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1947 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1948 if (status == 0) {
1949 // block until chase finished
1950 block_until_chase_response(edge_port);
1951 } else {
1952 edge_port->chaseResponsePending = FALSE;
1953 }
1954
1955 if (break_state == -1) {
1956 dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__);
1957 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
1958 } else {
1959 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__);
1960 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
1961 }
1962 if (status) {
1963 dbg("%s - error sending break set/clear command.", __FUNCTION__);
1964 }
1965
1966 return;
1967 }
1968
1969
1970 /*****************************************************************************
1971 * process_rcvd_data
1972 * this function handles the data received on the bulk in pipe.
1973 *****************************************************************************/
process_rcvd_data(struct edgeport_serial * edge_serial,unsigned char * buffer,__u16 bufferLength)1974 static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength)
1975 {
1976 struct usb_serial_port *port;
1977 struct edgeport_port *edge_port;
1978 struct tty_struct *tty;
1979 __u16 lastBufferLength;
1980 __u16 rxLen;
1981 int i;
1982
1983 dbg("%s", __FUNCTION__);
1984
1985 lastBufferLength = bufferLength + 1;
1986
1987 while (bufferLength > 0) {
1988 /* failsafe incase we get a message that we don't understand */
1989 if (lastBufferLength == bufferLength) {
1990 dbg("%s - stuck in loop, exiting it.", __FUNCTION__);
1991 break;
1992 }
1993 lastBufferLength = bufferLength;
1994
1995 switch (edge_serial->rxState) {
1996 case EXPECT_HDR1:
1997 edge_serial->rxHeader1 = *buffer;
1998 ++buffer;
1999 --bufferLength;
2000
2001 if (bufferLength == 0) {
2002 edge_serial->rxState = EXPECT_HDR2;
2003 break;
2004 }
2005 /* otherwise, drop on through */
2006
2007 case EXPECT_HDR2:
2008 edge_serial->rxHeader2 = *buffer;
2009 ++buffer;
2010 --bufferLength;
2011
2012 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2);
2013
2014 // Process depending on whether this header is
2015 // data or status
2016
2017 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
2018 // Decode this status header and goto EXPECT_HDR1 (if we
2019 // can process the status with only 2 bytes), or goto
2020 // EXPECT_HDR3 to get the third byte.
2021
2022 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
2023 edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1);
2024
2025 if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) {
2026 // This status needs additional bytes. Save what we have
2027 // and then wait for more data.
2028 edge_serial->rxStatusParam = edge_serial->rxHeader2;
2029
2030 edge_serial->rxState = EXPECT_HDR3;
2031 break;
2032 }
2033
2034 // We have all the header bytes, process the status now
2035 process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0);
2036
2037 edge_serial->rxState = EXPECT_HDR1;
2038 break;
2039 } else {
2040 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
2041 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2);
2042
2043 dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining);
2044
2045 //ASSERT( DevExt->RxPort < DevExt->NumPorts );
2046 //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
2047
2048 if (bufferLength == 0 ) {
2049 edge_serial->rxState = EXPECT_DATA;
2050 break;
2051 }
2052 // Else, drop through
2053 }
2054
2055 case EXPECT_DATA: // Expect data
2056
2057 if (bufferLength < edge_serial->rxBytesRemaining) {
2058 rxLen = bufferLength;
2059 edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer
2060 } else {
2061 // BufLen >= RxBytesRemaining
2062 rxLen = edge_serial->rxBytesRemaining;
2063 edge_serial->rxState = EXPECT_HDR1; // Start another header next time
2064 }
2065
2066 bufferLength -= rxLen;
2067 edge_serial->rxBytesRemaining -= rxLen;
2068
2069 /* spit this data back into the tty driver if this port is open */
2070 if (rxLen) {
2071 port = &edge_serial->serial->port[edge_serial->rxPort];
2072 if (port_paranoia_check (port, __FUNCTION__) == 0) {
2073 edge_port = (struct edgeport_port *)port->private;
2074 if (edge_port->open) {
2075 tty = edge_port->port->tty;
2076 if (tty) {
2077 dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort);
2078 for (i = 0; i < rxLen ; ++i) {
2079 /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
2080 if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
2081 tty_flip_buffer_push(tty);
2082 }
2083 /* this doesn't actually push the data through unless tty->low_latency is set */
2084 tty_insert_flip_char(tty, buffer[i], 0);
2085 }
2086 tty_flip_buffer_push(tty);
2087 }
2088 edge_port->icount.rx += rxLen;
2089 }
2090 }
2091 buffer += rxLen;
2092 }
2093
2094 break;
2095
2096 case EXPECT_HDR3: // Expect 3rd byte of status header
2097 edge_serial->rxHeader3 = *buffer;
2098 ++buffer;
2099 --bufferLength;
2100
2101 // We have all the header bytes, process the status now
2102 process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3);
2103 edge_serial->rxState = EXPECT_HDR1;
2104 break;
2105
2106 }
2107 }
2108
2109 return 0;
2110 }
2111
2112
2113 /*****************************************************************************
2114 * process_rcvd_status
2115 * this function handles the any status messages received on the bulk in pipe.
2116 *****************************************************************************/
process_rcvd_status(struct edgeport_serial * edge_serial,__u8 byte2,__u8 byte3)2117 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3)
2118 {
2119 struct usb_serial_port *port;
2120 struct edgeport_port *edge_port;
2121 __u8 code = edge_serial->rxStatusCode;
2122
2123 /* switch the port pointer to the one being currently talked about */
2124 port = &edge_serial->serial->port[edge_serial->rxPort];
2125 if (port_paranoia_check (port, __FUNCTION__)) {
2126 return;
2127 }
2128 edge_port = (struct edgeport_port *)port->private;
2129 if (edge_port == NULL) {
2130 err("%s - edge_port == NULL for port %d", __FUNCTION__, edge_serial->rxPort);
2131 return;
2132 }
2133
2134 dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort);
2135
2136 if (code == IOSP_EXT_STATUS) {
2137 switch (byte2) {
2138 case IOSP_EXT_STATUS_CHASE_RSP:
2139 // we want to do EXT status regardless of port open/closed
2140 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 );
2141 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call
2142 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
2143 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
2144 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
2145 // like wait longer in block_until_chase_response, but for now we don't.
2146 edge_port->chaseResponsePending = FALSE;
2147 wake_up_interruptible (&edge_port->wait_chase);
2148 return;
2149
2150 case IOSP_EXT_STATUS_RX_CHECK_RSP:
2151 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 );
2152 //Port->RxCheckRsp = TRUE;
2153 return;
2154 }
2155 }
2156
2157 if (code == IOSP_STATUS_OPEN_RSP) {
2158 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
2159 edge_port->maxTxCredits = edge_port->txCredits;
2160 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits);
2161 handle_new_msr (edge_port, byte2);
2162
2163 /* send the current line settings to the port so we are in sync with any further termios calls */
2164 if (edge_port->port->tty)
2165 change_port_settings (edge_port, edge_port->port->tty->termios);
2166
2167 /* we have completed the open */
2168 edge_port->openPending = FALSE;
2169 edge_port->open = TRUE;
2170 wake_up_interruptible(&edge_port->wait_open);
2171 return;
2172 }
2173
2174 // If port is closed, silently discard all rcvd status. We can
2175 // have cases where buffered status is received AFTER the close
2176 // port command is sent to the Edgeport.
2177 if ((!edge_port->open ) || (edge_port->closePending)) {
2178 return;
2179 }
2180
2181 switch (code) {
2182 // Not currently sent by Edgeport
2183 case IOSP_STATUS_LSR:
2184 dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2185 handle_new_lsr (edge_port, FALSE, byte2, 0);
2186 break;
2187
2188 case IOSP_STATUS_LSR_DATA:
2189 dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2190 // byte2 is LSR Register
2191 // byte3 is broken data byte
2192 handle_new_lsr (edge_port, TRUE, byte2, byte3);
2193 break;
2194 //
2195 // case IOSP_EXT_4_STATUS:
2196 // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2197 // break;
2198 //
2199 case IOSP_STATUS_MSR:
2200 dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2201
2202 // Process this new modem status and generate appropriate
2203 // events, etc, based on the new status. This routine
2204 // also saves the MSR in Port->ShadowMsr.
2205 handle_new_msr(edge_port, byte2);
2206 break;
2207
2208 default:
2209 dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code);
2210 break;
2211 }
2212
2213 return;
2214 }
2215
2216
2217 /*****************************************************************************
2218 * handle_new_msr
2219 * this function handles any change to the msr register for a port.
2220 *****************************************************************************/
handle_new_msr(struct edgeport_port * edge_port,__u8 newMsr)2221 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2222 {
2223 struct async_icount *icount;
2224
2225 dbg("%s %02x", __FUNCTION__, newMsr);
2226
2227 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2228 icount = &edge_port->icount;
2229
2230 /* update input line counters */
2231 if (newMsr & EDGEPORT_MSR_DELTA_CTS) {
2232 icount->cts++;
2233 }
2234 if (newMsr & EDGEPORT_MSR_DELTA_DSR) {
2235 icount->dsr++;
2236 }
2237 if (newMsr & EDGEPORT_MSR_DELTA_CD) {
2238 icount->dcd++;
2239 }
2240 if (newMsr & EDGEPORT_MSR_DELTA_RI) {
2241 icount->rng++;
2242 }
2243 wake_up_interruptible(&edge_port->delta_msr_wait);
2244 }
2245
2246 /* Save the new modem status */
2247 edge_port->shadowMSR = newMsr & 0xf0;
2248
2249 return;
2250 }
2251
2252
2253 /*****************************************************************************
2254 * handle_new_lsr
2255 * this function handles any change to the lsr register for a port.
2256 *****************************************************************************/
handle_new_lsr(struct edgeport_port * edge_port,__u8 lsrData,__u8 lsr,__u8 data)2257 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data)
2258 {
2259 __u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2260 struct async_icount *icount;
2261
2262 dbg("%s - %02x", __FUNCTION__, newLsr);
2263
2264 edge_port->shadowLSR = lsr;
2265
2266 if (newLsr & LSR_BREAK) {
2267 //
2268 // Parity and Framing errors only count if they
2269 // occur exclusive of a break being
2270 // received.
2271 //
2272 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2273 }
2274
2275 /* Place LSR data byte into Rx buffer */
2276 if (lsrData && edge_port->port->tty) {
2277 tty_insert_flip_char(edge_port->port->tty, data, 0);
2278 tty_flip_buffer_push(edge_port->port->tty);
2279 }
2280
2281 /* update input line counters */
2282 icount = &edge_port->icount;
2283 if (newLsr & LSR_BREAK) {
2284 icount->brk++;
2285 }
2286 if (newLsr & LSR_OVER_ERR) {
2287 icount->overrun++;
2288 }
2289 if (newLsr & LSR_PAR_ERR) {
2290 icount->parity++;
2291 }
2292 if (newLsr & LSR_FRM_ERR) {
2293 icount->frame++;
2294 }
2295
2296 return;
2297 }
2298
2299
2300 /****************************************************************************
2301 * sram_write
2302 * writes a number of bytes to the Edgeport device's sram starting at the
2303 * given address.
2304 * If successful returns the number of bytes written, otherwise it returns
2305 * a negative error number of the problem.
2306 ****************************************************************************/
sram_write(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,__u8 * data)2307 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2308 {
2309 int result;
2310 __u16 current_length;
2311 unsigned char *transfer_buffer;
2312
2313 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2314
2315 transfer_buffer = kmalloc (64, GFP_KERNEL);
2316 if (!transfer_buffer) {
2317 err("%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2318 return -ENOMEM;
2319 }
2320
2321 /* need to split these writes up into 64 byte chunks */
2322 result = 0;
2323 while (length > 0) {
2324 if (length > 64) {
2325 current_length = 64;
2326 } else {
2327 current_length = length;
2328 }
2329 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2330 memcpy (transfer_buffer, data, current_length);
2331 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM,
2332 0x40, addr, extAddr, transfer_buffer, current_length, 300);
2333 if (result < 0)
2334 break;
2335 length -= current_length;
2336 addr += current_length;
2337 data += current_length;
2338 }
2339
2340 kfree (transfer_buffer);
2341 return result;
2342 }
2343
2344
2345 /****************************************************************************
2346 * rom_write
2347 * writes a number of bytes to the Edgeport device's ROM starting at the
2348 * given address.
2349 * If successful returns the number of bytes written, otherwise it returns
2350 * a negative error number of the problem.
2351 ****************************************************************************/
rom_write(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,__u8 * data)2352 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2353 {
2354 int result;
2355 __u16 current_length;
2356 unsigned char *transfer_buffer;
2357
2358 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2359
2360 transfer_buffer = kmalloc (64, GFP_KERNEL);
2361 if (!transfer_buffer) {
2362 err("%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2363 return -ENOMEM;
2364 }
2365
2366 /* need to split these writes up into 64 byte chunks */
2367 result = 0;
2368 while (length > 0) {
2369 if (length > 64) {
2370 current_length = 64;
2371 } else {
2372 current_length = length;
2373 }
2374 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2375 memcpy (transfer_buffer, data, current_length);
2376 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM,
2377 0x40, addr, extAddr, transfer_buffer, current_length, 300);
2378 if (result < 0)
2379 break;
2380 length -= current_length;
2381 addr += current_length;
2382 data += current_length;
2383 }
2384
2385 kfree (transfer_buffer);
2386 return result;
2387 }
2388
2389
2390 /****************************************************************************
2391 * rom_read
2392 * reads a number of bytes from the Edgeport device starting at the given
2393 * address.
2394 * If successful returns the number of bytes read, otherwise it returns
2395 * a negative error number of the problem.
2396 ****************************************************************************/
rom_read(struct usb_serial * serial,__u16 extAddr,__u16 addr,__u16 length,__u8 * data)2397 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2398 {
2399 int result;
2400 __u16 current_length;
2401 unsigned char *transfer_buffer;
2402
2403 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2404
2405 transfer_buffer = kmalloc (64, GFP_KERNEL);
2406 if (!transfer_buffer) {
2407 err("%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2408 return -ENOMEM;
2409 }
2410
2411 /* need to split these reads up into 64 byte chunks */
2412 result = 0;
2413 while (length > 0) {
2414 if (length > 64) {
2415 current_length = 64;
2416 } else {
2417 current_length = length;
2418 }
2419 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2420 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM,
2421 0xC0, addr, extAddr, transfer_buffer, current_length, 300);
2422 if (result < 0)
2423 break;
2424 memcpy (data, transfer_buffer, current_length);
2425 length -= current_length;
2426 addr += current_length;
2427 data += current_length;
2428 }
2429
2430 kfree (transfer_buffer);
2431 return result;
2432 }
2433
2434
2435 /****************************************************************************
2436 * send_iosp_ext_cmd
2437 * Is used to send a IOSP message to the Edgeport device
2438 ****************************************************************************/
send_iosp_ext_cmd(struct edgeport_port * edge_port,__u8 command,__u8 param)2439 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param)
2440 {
2441 unsigned char *buffer;
2442 unsigned char *currentCommand;
2443 int length = 0;
2444 int status = 0;
2445
2446 dbg("%s - %d, %d", __FUNCTION__, command, param);
2447
2448 buffer = kmalloc (10, GFP_ATOMIC);
2449 if (!buffer) {
2450 err("%s - kmalloc(%d) failed.\n", __FUNCTION__, 10);
2451 return -ENOMEM;
2452 }
2453
2454 currentCommand = buffer;
2455
2456 MAKE_CMD_EXT_CMD (¤tCommand, &length,
2457 edge_port->port->number - edge_port->port->serial->minor,
2458 command, param);
2459
2460 status = write_cmd_usb (edge_port, buffer, length);
2461 if (status) {
2462 /* something bad happened, let's free up the memory */
2463 kfree(buffer);
2464 }
2465
2466 return status;
2467 }
2468
2469
2470 /*****************************************************************************
2471 * write_cmd_usb
2472 * this function writes the given buffer out to the bulk write endpoint.
2473 *****************************************************************************/
write_cmd_usb(struct edgeport_port * edge_port,unsigned char * buffer,int length)2474 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length)
2475 {
2476 struct edgeport_serial *edge_serial = (struct edgeport_serial *)edge_port->port->serial->private;
2477 int status = 0;
2478 struct urb *urb;
2479 int timeout;
2480
2481 usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
2482
2483 /* Allocate our next urb */
2484 urb = usb_alloc_urb (0);
2485 if (!urb)
2486 return -ENOMEM;
2487
2488 CmdUrbs++;
2489 dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
2490
2491 FILL_BULK_URB (urb, edge_serial->serial->dev,
2492 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
2493 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2494
2495 /* set the USB_BULK_QUEUE flag so that we can shove a bunch of urbs at once down the pipe */
2496 urb->transfer_flags |= USB_QUEUE_BULK;
2497
2498 edge_port->commandPending = TRUE;
2499 status = usb_submit_urb(urb);
2500
2501 if (status) {
2502 /* something went wrong */
2503 dbg("%s - usb_submit_urb(write bulk) failed", __FUNCTION__);
2504 usb_unlink_urb (urb);
2505 usb_free_urb (urb);
2506 return status;
2507 }
2508
2509 // wait for command to finish
2510 timeout = COMMAND_TIMEOUT;
2511 #if 0
2512 while (timeout && edge_port->commandPending == TRUE) {
2513 timeout = interruptible_sleep_on_timeout (&edge_port->wait_command, timeout);
2514 }
2515
2516 if (edge_port->commandPending == TRUE) {
2517 /* command timed out */
2518 dbg("%s - command timed out", __FUNCTION__);
2519 status = -EINVAL;
2520 }
2521 #endif
2522 return status;
2523 }
2524
2525
2526 /*****************************************************************************
2527 * send_cmd_write_baud_rate
2528 * this function sends the proper command to change the baud rate of the
2529 * specified port.
2530 *****************************************************************************/
send_cmd_write_baud_rate(struct edgeport_port * edge_port,int baudRate)2531 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate)
2532 {
2533 unsigned char *cmdBuffer;
2534 unsigned char *currCmd;
2535 int cmdLen = 0;
2536 int divisor;
2537 int status;
2538 unsigned char number = edge_port->port->number - edge_port->port->serial->minor;
2539
2540 dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);
2541
2542 status = calc_baud_rate_divisor (baudRate, &divisor);
2543 if (status) {
2544 err("%s - bad baud rate", __FUNCTION__);
2545 return status;
2546 }
2547
2548 // Alloc memory for the string of commands.
2549 cmdBuffer = kmalloc (0x100, GFP_ATOMIC);
2550 if (!cmdBuffer) {
2551 err("%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100);
2552 return -ENOMEM;
2553 }
2554 currCmd = cmdBuffer;
2555
2556 // Enable access to divisor latch
2557 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE );
2558
2559 // Write the divisor itself
2560 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) );
2561 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) );
2562
2563 // Restore original value to disable access to divisor latch
2564 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR);
2565
2566 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen );
2567 if (status) {
2568 /* something bad happened, let's free up the memory */
2569 kfree (cmdBuffer);
2570 }
2571
2572 return status;
2573 }
2574
2575
2576 /*****************************************************************************
2577 * calc_baud_rate_divisor
2578 * this function calculates the proper baud rate divisor for the specified
2579 * baud rate.
2580 *****************************************************************************/
calc_baud_rate_divisor(int baudrate,int * divisor)2581 static int calc_baud_rate_divisor (int baudrate, int *divisor)
2582 {
2583 int i;
2584 __u16 custom;
2585 __u16 round1;
2586 __u16 round;
2587
2588
2589 dbg("%s - %d", __FUNCTION__, baudrate);
2590
2591 for (i = 0; i < NUM_ENTRIES(divisor_table); i++) {
2592 if ( divisor_table[i].BaudRate == baudrate ) {
2593 *divisor = divisor_table[i].Divisor;
2594 return 0;
2595 }
2596 }
2597
2598 // We have tried all of the standard baud rates
2599 // lets try to calculate the divisor for this baud rate
2600 // Make sure the baud rate is reasonable
2601 if (baudrate < 230400) {
2602 // get divisor
2603 custom = (__u16)(230400L / baudrate);
2604
2605 // Check for round off
2606 round1 = (__u16)(2304000L / baudrate);
2607 round = (__u16)(round1 - (custom * 10));
2608 if (round > 4) {
2609 custom++;
2610 }
2611 *divisor = custom;
2612
2613 dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom);
2614 return 0;
2615 }
2616
2617 return -1;
2618 }
2619
2620
2621 /*****************************************************************************
2622 * send_cmd_write_uart_register
2623 * this function builds up a uart register message and sends to to the device.
2624 *****************************************************************************/
send_cmd_write_uart_register(struct edgeport_port * edge_port,__u8 regNum,__u8 regValue)2625 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue)
2626 {
2627 unsigned char *cmdBuffer;
2628 unsigned char *currCmd;
2629 unsigned long cmdLen = 0;
2630 int status;
2631
2632 dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue);
2633
2634 // Alloc memory for the string of commands.
2635 cmdBuffer = kmalloc (0x10, GFP_ATOMIC);
2636 if (cmdBuffer == NULL ) {
2637 return -ENOMEM;
2638 }
2639
2640 currCmd = cmdBuffer;
2641
2642 // Build a cmd in the buffer to write the given register
2643 MAKE_CMD_WRITE_REG (&currCmd, &cmdLen,
2644 edge_port->port->number - edge_port->port->serial->minor,
2645 regNum, regValue);
2646
2647 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2648 if (status) {
2649 /* something bad happened, let's free up the memory */
2650 kfree (cmdBuffer);
2651 }
2652
2653 return status;
2654 }
2655
2656
2657 /*****************************************************************************
2658 * change_port_settings
2659 * This routine is called to set the UART on the device to match the specified
2660 * new settings.
2661 *****************************************************************************/
change_port_settings(struct edgeport_port * edge_port,struct termios * old_termios)2662 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2663 {
2664 struct tty_struct *tty;
2665 int baud;
2666 unsigned cflag;
2667 __u8 mask = 0xff;
2668 __u8 lData;
2669 __u8 lParity;
2670 __u8 lStop;
2671 __u8 rxFlow;
2672 __u8 txFlow;
2673 int status;
2674
2675 dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2676
2677 if ((!edge_port->open) &&
2678 (!edge_port->openPending)) {
2679 dbg("%s - port not opened", __FUNCTION__);
2680 return;
2681 }
2682
2683 tty = edge_port->port->tty;
2684 if ((!tty) ||
2685 (!tty->termios)) {
2686 dbg("%s - no tty structures", __FUNCTION__);
2687 return;
2688 }
2689
2690 cflag = tty->termios->c_cflag;
2691
2692 switch (cflag & CSIZE) {
2693 case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break;
2694 case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break;
2695 case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break;
2696 default:
2697 case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break;
2698 }
2699
2700 lParity = LCR_PAR_NONE;
2701 if (cflag & PARENB) {
2702 if (cflag & PARODD) {
2703 lParity = LCR_PAR_ODD;
2704 dbg("%s - parity = odd", __FUNCTION__);
2705 } else {
2706 lParity = LCR_PAR_EVEN;
2707 dbg("%s - parity = even", __FUNCTION__);
2708 }
2709 } else {
2710 dbg("%s - parity = none", __FUNCTION__);
2711 }
2712
2713 if (cflag & CSTOPB) {
2714 lStop = LCR_STOP_2;
2715 dbg("%s - stop bits = 2", __FUNCTION__);
2716 } else {
2717 lStop = LCR_STOP_1;
2718 dbg("%s - stop bits = 1", __FUNCTION__);
2719 }
2720
2721 /* figure out the flow control settings */
2722 rxFlow = txFlow = 0x00;
2723 if (cflag & CRTSCTS) {
2724 rxFlow |= IOSP_RX_FLOW_RTS;
2725 txFlow |= IOSP_TX_FLOW_CTS;
2726 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2727 } else {
2728 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2729 }
2730
2731 /* if we are implementing XON/XOFF, set the start and stop character in the device */
2732 if (I_IXOFF(tty) || I_IXON(tty)) {
2733 unsigned char stop_char = STOP_CHAR(tty);
2734 unsigned char start_char = START_CHAR(tty);
2735
2736 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XON_CHAR, start_char);
2737 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char);
2738
2739 /* if we are implementing INBOUND XON/XOFF */
2740 if (I_IXOFF(tty)) {
2741 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2742 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2743 } else {
2744 dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2745 }
2746
2747 /* if we are implementing OUTBOUND XON/XOFF */
2748 if (I_IXON(tty)) {
2749 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2750 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2751 } else {
2752 dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2753 }
2754 }
2755
2756 /* Set flow control to the configured value */
2757 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2758 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2759
2760
2761 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2762 edge_port->shadowLCR |= (lData | lParity | lStop);
2763
2764 edge_port->validDataMask = mask;
2765
2766 /* Send the updated LCR value to the EdgePort */
2767 status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR);
2768 if (status != 0) {
2769 return;
2770 }
2771
2772 /* set up the MCR register and send it to the EdgePort */
2773 edge_port->shadowMCR = MCR_MASTER_IE;
2774 if (cflag & CBAUD) {
2775 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2776 }
2777 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
2778 if (status != 0) {
2779 return;
2780 }
2781
2782 /* Determine divisor based on baud rate */
2783 baud = tty_get_baud_rate(tty);
2784 if (!baud) {
2785 /* pick a default, any default... */
2786 baud = 9600;
2787 }
2788
2789 dbg("%s - baud rate = %d", __FUNCTION__, baud);
2790 status = send_cmd_write_baud_rate (edge_port, baud);
2791
2792 return;
2793 }
2794
2795
2796 /****************************************************************************
2797 * unicode_to_ascii
2798 * Turns a string from Unicode into ASCII.
2799 * Doesn't do a good job with any characters that are outside the normal
2800 * ASCII range, but it's only for debugging...
2801 * NOTE: expects the unicode in LE format
2802 ****************************************************************************/
unicode_to_ascii(char * string,short * unicode,int unicode_size)2803 static void unicode_to_ascii (char *string, short *unicode, int unicode_size)
2804 {
2805 int i;
2806
2807 if (unicode_size <= 0)
2808 return;
2809
2810 for (i = 0; i < unicode_size; ++i)
2811 string[i] = (char)(le16_to_cpu(unicode[i]));
2812
2813 string[unicode_size] = 0x00;
2814 }
2815
2816
2817 /****************************************************************************
2818 * get_manufacturing_desc
2819 * reads in the manufacturing descriptor and stores it into the serial
2820 * structure.
2821 ****************************************************************************/
get_manufacturing_desc(struct edgeport_serial * edge_serial)2822 static void get_manufacturing_desc (struct edgeport_serial *edge_serial)
2823 {
2824 int response;
2825
2826 dbg("getting manufacturer descriptor");
2827
2828 response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2829 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN,
2830 (__u8 *)(&edge_serial->manuf_descriptor));
2831
2832 if (response < 1) {
2833 err("error in getting manufacturer descriptor");
2834 } else {
2835 char string[30];
2836 dbg("**Manufacturer Descriptor");
2837 dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize);
2838 dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize);
2839 dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev);
2840 dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev);
2841 dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts);
2842 dbg(" DescDate: %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900);
2843 unicode_to_ascii (string, edge_serial->manuf_descriptor.SerialNumber, edge_serial->manuf_descriptor.SerNumLength/2-1);
2844 dbg(" SerialNumber: %s", string);
2845 unicode_to_ascii (string, edge_serial->manuf_descriptor.AssemblyNumber, edge_serial->manuf_descriptor.AssemblyNumLength/2-1);
2846 dbg(" AssemblyNumber: %s", string);
2847 unicode_to_ascii (string, edge_serial->manuf_descriptor.OemAssyNumber, edge_serial->manuf_descriptor.OemAssyNumLength/2-1);
2848 dbg(" OemAssyNumber: %s", string);
2849 dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType);
2850 dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid);
2851 dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig);
2852 }
2853 }
2854
2855
2856 /****************************************************************************
2857 * get_boot_desc
2858 * reads in the bootloader descriptor and stores it into the serial
2859 * structure.
2860 ****************************************************************************/
get_boot_desc(struct edgeport_serial * edge_serial)2861 static void get_boot_desc (struct edgeport_serial *edge_serial)
2862 {
2863 int response;
2864
2865 dbg("getting boot descriptor");
2866
2867 response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2868 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN,
2869 (__u8 *)(&edge_serial->boot_descriptor));
2870
2871 if (response < 1) {
2872 err("error in getting boot descriptor");
2873 } else {
2874 dbg("**Boot Descriptor:");
2875 dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2876 dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion);
2877 dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion);
2878 dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2879 dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2880 dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0);
2881 dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1);
2882 }
2883 }
2884
2885
2886 /****************************************************************************
2887 * load_application_firmware
2888 * This is called to load the application firmware to the device
2889 ****************************************************************************/
load_application_firmware(struct edgeport_serial * edge_serial)2890 static void load_application_firmware (struct edgeport_serial *edge_serial)
2891 {
2892 struct edge_firmware_image_record *record;
2893 unsigned char *firmware;
2894 unsigned char *FirmwareImage;
2895 int ImageSize;
2896 int response;
2897
2898
2899 switch (edge_serial->product_info.iDownloadFile) {
2900 case EDGE_DOWNLOAD_FILE_I930:
2901 dbg("downloading firmware version (930) %d.%d.%d",
2902 OperationalCodeImageVersion_GEN1.MajorVersion,
2903 OperationalCodeImageVersion_GEN1.MinorVersion,
2904 OperationalCodeImageVersion_GEN1.BuildNumber);
2905 firmware = &OperationalCodeImage_GEN1[0];
2906 FirmwareImage = &OperationalCodeImage_GEN1[0];
2907 ImageSize = sizeof(OperationalCodeImage_GEN1);
2908 break;
2909
2910 case EDGE_DOWNLOAD_FILE_80251:
2911 dbg("downloading firmware version (80251) %d.%d.%d",
2912 OperationalCodeImageVersion_GEN2.MajorVersion,
2913 OperationalCodeImageVersion_GEN2.MinorVersion,
2914 OperationalCodeImageVersion_GEN2.BuildNumber);
2915 firmware = &OperationalCodeImage_GEN2[0];
2916 FirmwareImage = &OperationalCodeImage_GEN2[0];
2917 ImageSize = sizeof(OperationalCodeImage_GEN2);
2918 break;
2919
2920 case EDGE_DOWNLOAD_FILE_NONE:
2921 dbg ("No download file specified, skipping download\n");
2922 return;
2923
2924 default:
2925 return;
2926 }
2927
2928
2929 for (;;) {
2930 record = (struct edge_firmware_image_record *)firmware;
2931 response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
2932 if (response < 0) {
2933 err("sram_write failed (%x, %x, %d)", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), record->Len);
2934 break;
2935 }
2936 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
2937 if (firmware >= &FirmwareImage[ImageSize]) {
2938 break;
2939 }
2940 }
2941
2942 dbg("sending exec_dl_code");
2943 response = usb_control_msg (edge_serial->serial->dev,
2944 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2945 USB_REQUEST_ION_EXEC_DL_CODE,
2946 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2947
2948 return;
2949 }
2950
2951
2952
2953
2954 /****************************************************************************
2955 * edge_startup
2956 ****************************************************************************/
edge_startup(struct usb_serial * serial)2957 static int edge_startup (struct usb_serial *serial)
2958 {
2959 struct edgeport_serial *edge_serial;
2960 struct edgeport_port *edge_port;
2961 struct usb_device *dev;
2962 int i;
2963
2964 dev = serial->dev;
2965
2966 /* create our private serial structure */
2967 edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
2968 if (edge_serial == NULL) {
2969 err("%s - Out of memory", __FUNCTION__);
2970 return -ENOMEM;
2971 }
2972 memset (edge_serial, 0, sizeof(struct edgeport_serial));
2973 edge_serial->serial = serial;
2974 serial->private = edge_serial;
2975
2976 /* get the name for the device from the device */
2977 if ( (i = get_string(dev, dev->descriptor.iManufacturer, &edge_serial->name[0])) != 0) {
2978 edge_serial->name[i-1] = ' ';
2979 }
2980
2981 get_string(dev, dev->descriptor.iProduct, &edge_serial->name[i]);
2982
2983 info("%s detected", edge_serial->name);
2984
2985 /* get the manufacturing descriptor for this device */
2986 get_manufacturing_desc (edge_serial);
2987
2988 /* get the boot descriptor */
2989 get_boot_desc (edge_serial);
2990
2991 get_product_info(edge_serial);
2992
2993 /* set the number of ports from the manufacturing description */
2994 /* serial->num_ports = serial->product_info.NumPorts; */
2995 if (edge_serial->product_info.NumPorts != serial->num_ports) {
2996 warn("%s - Device Reported %d serial ports vs core "
2997 "thinking we have %d ports, email greg@kroah.com this info.",
2998 __FUNCTION__, edge_serial->product_info.NumPorts,
2999 serial->num_ports);
3000 }
3001
3002 dbg("%s - time 1 %ld", __FUNCTION__, jiffies);
3003
3004 /* now load the application firmware into this device */
3005 load_application_firmware (edge_serial);
3006
3007 dbg("%s - time 2 %ld", __FUNCTION__, jiffies);
3008
3009 /* Check current Edgeport EEPROM and update if necessary */
3010 update_edgeport_E2PROM (edge_serial);
3011
3012 dbg("%s - time 3 %ld", __FUNCTION__, jiffies);
3013
3014 /* set the configuration to use #1 */
3015 // dbg("set_configuration 1");
3016 // usb_set_configuration (dev, 1);
3017
3018 /* we set up the pointers to the endpoints in the edge_open function,
3019 * as the structures aren't created yet. */
3020
3021 /* set up our port private structures */
3022 for (i = 0; i < serial->num_ports; ++i) {
3023 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
3024 if (edge_port == NULL) {
3025 err("%s - Out of memory", __FUNCTION__);
3026 return -ENOMEM;
3027 }
3028 memset (edge_port, 0, sizeof(struct edgeport_port));
3029 edge_port->port = &serial->port[i];
3030 serial->port[i].private = edge_port;
3031 }
3032
3033 return 0;
3034 }
3035
3036
3037
3038 /****************************************************************************
3039 * edge_shutdown
3040 * This function is called whenever the device is removed from the usb bus.
3041 ****************************************************************************/
edge_shutdown(struct usb_serial * serial)3042 static void edge_shutdown (struct usb_serial *serial)
3043 {
3044 int i;
3045
3046 dbg("%s", __FUNCTION__);
3047
3048 /* stop reads and writes on all ports */
3049 for (i=0; i < serial->num_ports; ++i) {
3050 kfree (serial->port[i].private);
3051 serial->port[i].private = NULL;
3052 }
3053 kfree (serial->private);
3054 serial->private = NULL;
3055 }
3056
3057
3058 /****************************************************************************
3059 * edgeport_init
3060 * This is called by the module subsystem, or on startup to initialize us
3061 ****************************************************************************/
edgeport_init(void)3062 int __init edgeport_init(void)
3063 {
3064 usb_serial_register (&edgeport_1port_device);
3065 usb_serial_register (&edgeport_2port_device);
3066 usb_serial_register (&edgeport_4port_device);
3067 usb_serial_register (&edgeport_8port_device);
3068 info(DRIVER_DESC " " DRIVER_VERSION);
3069 return 0;
3070 }
3071
3072
3073
3074 /****************************************************************************
3075 * edgeport_exit
3076 * Called when the driver is about to be unloaded.
3077 ****************************************************************************/
edgeport_exit(void)3078 void __exit edgeport_exit (void)
3079 {
3080 usb_serial_deregister (&edgeport_1port_device);
3081 usb_serial_deregister (&edgeport_2port_device);
3082 usb_serial_deregister (&edgeport_4port_device);
3083 usb_serial_deregister (&edgeport_8port_device);
3084 }
3085
3086 module_init(edgeport_init);
3087 module_exit(edgeport_exit);
3088
3089 /* Module information */
3090 MODULE_AUTHOR( DRIVER_AUTHOR );
3091 MODULE_DESCRIPTION( DRIVER_DESC );
3092 MODULE_LICENSE("GPL");
3093
3094 MODULE_PARM(debug, "i");
3095 MODULE_PARM_DESC(debug, "Debug enabled or not");
3096
3097