2 * Edgeport USB Serial Converter driver
4 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
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.
12 * Supports the following devices:
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
32 * 2.3 2002_03_08 greg kroah-hartman
33 * - fixed bug when multiple devices were attached at the same time.
35 * 2.2 2001_11_14 greg kroah-hartman
36 * - fixed bug in edge_close that kept the port from being used more
38 * - fixed memory leak on device removal.
39 * - fixed potential double free of memory when command urb submitting
41 * - other small cleanups when the device is removed
43 * 2.1 2001_07_09 greg kroah-hartman
44 * - added support for TIOCMBIS and TIOCMBIC.
47 * - Identify version on module load.
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.
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.
57 * 1.2.2 (11/27/2000) greg kroah-hartman
58 * - cleaned up more NTisms.
59 * - Added device table for 2.4.0-test11
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
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 )
76 * 1.1 (10/11/2000) David Iacovelli
77 * Fix XON/XOFF flow control to support both IXON and IXOFF
79 * 0.9.27 (06/30/2000) David Iacovelli
80 * Added transmit queue and now allocate urb for command writes.
82 * 0.9.26 (06/29/2000) David Iacovelli
83 * Add support for 80251 based edgeport
85 * 0.9.25 (06/27/2000) David Iacovelli
86 * Do not close the port if it has multiple opens.
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
92 * 0.9.23 (05/24/2000) David Iacovelli
93 * Add IOCTLs to support RXTX and JAVA POS
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
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
105 * 0.9.20 (05/01/2000) David Iacovelli
106 * change driver to use usb/tts/
108 * 0.9.19 (05/01/2000) David Iacovelli
109 * Update code to compile if DEBUG is off
111 * 0.9.18 (04/28/2000) David Iacovelli
112 * cleanup and test tty_register with devfs
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.
118 * 0.9.16 (04/26/2000) david iacovelli
119 * Fixed bug in GetProductInfo()
121 * 0.9.15 (04/25/2000) david iacovelli
122 * Updated enumeration
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
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
137 * 0.9.12 (04/18/2000) david iacovelli
138 * added additional configuration IOCTLs
139 * use ttyUSB0 for configuration
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.
147 * 0.9.10 (04/13/2000) greg kroah-hartman
148 * added proc interface framework.
150 * 0.9.9 (04/13/2000) david iacovelli
151 * added enumeration code and ioctls to configure the device
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
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
166 * 0.9.6 (03/30/2000) david iacovelli
167 * add IOCTL to get string, manufacture, and boot descriptors
169 * 0.9.5 (03/14/2000) greg kroah-hartman
170 * more error checking added to SerialOpen to try to fix UHCI open problem
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.
176 * 0.9.3 (03/09/2000) david iacovelli
177 * Add epic support for xon/xoff chars
178 * play with performance
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
184 * 0.9.1 (03/08/2000) david iacovelli
186 * enabled bootloader update
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
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.
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.
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.
214 * 0.5 (02/20/2000) greg kroah-hartman
215 * Release to IO networks.
217 * modem status register changes are not sent on to the user
218 * CHASE is not implemented when the port is closed.
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
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!
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.
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.
247 #include <linux/config.h>
248 #include <linux/kernel.h>
249 #include <linux/jiffies.h>
250 #include <linux/errno.h>
251 #include <linux/init.h>
252 #include <linux/slab.h>
253 #include <linux/tty.h>
254 #include <linux/tty_driver.h>
255 #include <linux/tty_flip.h>
256 #include <linux/module.h>
257 #include <linux/spinlock.h>
258 #include <linux/serial.h>
259 #include <linux/ioctl.h>
260 #include <asm/uaccess.h>
261 #include <linux/usb.h>
262 #include "usb-serial.h"
263 #include "io_edgeport.h"
264 #include "io_ionsp.h" /* info for the iosp messages */
265 #include "io_16654.h" /* 16654 UART defines */
268 * Version Information
270 #define DRIVER_VERSION "v2.3"
271 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
272 #define DRIVER_DESC "Edgeport USB Serial Driver"
274 /* First, the latest boot code - for first generation edgeports */
275 #define IMAGE_ARRAY_NAME BootCodeImage_GEN1
276 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1
277 #include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */
279 /* for second generation edgeports */
280 #define IMAGE_ARRAY_NAME BootCodeImage_GEN2
281 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2
282 #include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */
284 /* Then finally the main run-time operational code - for first generation edgeports */
285 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1
286 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1
287 #include "io_fw_down.h" /* Define array OperationalCodeImage[] */
289 /* for second generation edgeports */
290 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2
291 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2
292 #include "io_fw_down2.h" /* Define array OperationalCodeImage[] */
294 #define MAX_NAME_LEN 64
296 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
297 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
298 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
302 /* receive port state */
304 EXPECT_HDR1 = 0, /* Expect header byte 1 */
305 EXPECT_HDR2 = 1, /* Expect header byte 2 */
306 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
307 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
312 * This Transmit queue is an extension of the edgeport Rx buffer.
313 * The maximum amount of data buffered in both the edgeport
314 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
317 unsigned int head; /* index to head pointer (write) */
318 unsigned int tail; /* index to tail pointer (read) */
319 unsigned int count; /* Bytes in queue */
320 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
321 unsigned char *fifo; /* allocated Buffer */
324 /* This structure holds all of the local port information */
325 struct edgeport_port {
326 __u16 txCredits; /* our current credits for this port */
327 __u16 maxTxCredits; /* the max size of the port */
329 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
330 struct urb *write_urb; /* write URB for this port */
331 char write_in_progress; /* TRUE while a write URB is outstanding */
333 __u8 shadowLCR; /* last LCR value received */
334 __u8 shadowMCR; /* last MCR value received */
335 __u8 shadowMSR; /* last MSR value received */
336 __u8 shadowLSR; /* last LSR value received */
337 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
338 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
346 char chaseResponsePending;
348 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
349 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
350 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
351 wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
353 struct async_icount icount;
354 struct usb_serial_port *port; /* loop back to the owner of this object */
358 /* This structure holds all of the individual device information */
359 struct edgeport_serial {
360 char name[MAX_NAME_LEN+1]; /* string name of this device */
362 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
363 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
364 struct edgeport_product_info product_info; /* Product Info */
366 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
367 unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
368 struct urb * interrupt_read_urb; /* our interrupt urb */
370 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
371 unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
372 struct urb * read_urb; /* our bulk read urb */
374 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
376 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
378 enum RXSTATE rxState; /* the current state of the bulk receive processor */
379 __u8 rxHeader1; /* receive header byte 1 */
380 __u8 rxHeader2; /* receive header byte 2 */
381 __u8 rxHeader3; /* receive header byte 3 */
382 __u8 rxPort; /* the port that we are currently receiving data for */
383 __u8 rxStatusCode; /* the receive status code */
384 __u8 rxStatusParam; /* the receive status paramater */
385 __s16 rxBytesRemaining; /* the number of port bytes left to read */
386 struct usb_serial *serial; /* loop back to the owner of this object */
389 /* baud rate information */
390 struct divisor_table_entry {
396 // Define table of divisors for Rev A EdgePort/4 hardware
397 // These assume a 3.6864MHz crystal, the standard /16, and
400 static struct divisor_table_entry divisor_table[] = {
403 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
404 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
422 /* local variables */
423 static int CmdUrbs = 0; /* Number of outstanding Command Write Urbs */
426 /* local function prototypes */
428 /* function prototypes for all URB callbacks */
429 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs);
430 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs);
431 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs);
432 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs);
434 /* function prototypes for the usbserial callbacks */
435 static int edge_open (struct usb_serial_port *port, struct file *filp);
436 static void edge_close (struct usb_serial_port *port, struct file *filp);
437 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
438 static int edge_write_room (struct usb_serial_port *port);
439 static int edge_chars_in_buffer (struct usb_serial_port *port);
440 static void edge_throttle (struct usb_serial_port *port);
441 static void edge_unthrottle (struct usb_serial_port *port);
442 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
443 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
444 static void edge_break (struct usb_serial_port *port, int break_state);
445 static int edge_tiocmget (struct usb_serial_port *port, struct file *file);
446 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
447 static int edge_startup (struct usb_serial *serial);
448 static void edge_shutdown (struct usb_serial *serial);
451 #include "io_tables.h" /* all of the devices that this driver supports */
453 static struct usb_driver io_driver = {
454 .owner = THIS_MODULE,
455 .name = "io_edgeport",
456 .probe = usb_serial_probe,
457 .disconnect = usb_serial_disconnect,
458 .id_table = id_table_combined,
461 /* function prototypes for all of our local functions */
462 static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength);
463 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3);
464 static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr);
465 static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
466 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param);
467 static int calc_baud_rate_divisor (int baud_rate, int *divisor);
468 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate);
469 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios);
470 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
471 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
472 static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
474 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
475 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
476 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
477 static void get_manufacturing_desc (struct edgeport_serial *edge_serial);
478 static void get_boot_desc (struct edgeport_serial *edge_serial);
479 static void load_application_firmware (struct edgeport_serial *edge_serial);
482 static void unicode_to_ascii (char *string, short *unicode, int unicode_size);
488 // ************************************************************************
489 // ************************************************************************
490 // ************************************************************************
491 // ************************************************************************
493 /************************************************************************
495 * update_edgeport_E2PROM() Compare current versions of *
496 * Boot ROM and Manufacture *
497 * Descriptors with versions *
498 * embedded in this driver *
500 ************************************************************************/
501 static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial)
505 __u8 BootMajorVersion;
506 __u8 BootMinorVersion;
507 __u16 BootBuildNumber;
510 struct edge_firmware_image_record *record;
511 unsigned char *firmware;
515 switch (edge_serial->product_info.iDownloadFile) {
516 case EDGE_DOWNLOAD_FILE_I930:
517 BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion;
518 BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion;
519 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber);
520 BootImage = &BootCodeImage_GEN1[0];
521 BootSize = sizeof( BootCodeImage_GEN1 );
524 case EDGE_DOWNLOAD_FILE_80251:
525 BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion;
526 BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion;
527 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber);
528 BootImage = &BootCodeImage_GEN2[0];
529 BootSize = sizeof( BootCodeImage_GEN2 );
536 // Check Boot Image Version
537 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
538 (edge_serial->boot_descriptor.MinorVersion << 16) +
539 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
541 BootNewVer = (BootMajorVersion << 24) +
542 (BootMinorVersion << 16) +
543 le16_to_cpu(BootBuildNumber);
545 dbg("Current Boot Image version %d.%d.%d",
546 edge_serial->boot_descriptor.MajorVersion,
547 edge_serial->boot_descriptor.MinorVersion,
548 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
551 if (BootNewVer > BootCurVer) {
552 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
553 edge_serial->boot_descriptor.MajorVersion,
554 edge_serial->boot_descriptor.MinorVersion,
555 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
558 le16_to_cpu(BootBuildNumber));
561 dbg("Downloading new Boot Image");
563 firmware = BootImage;
566 record = (struct edge_firmware_image_record *)firmware;
567 response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
569 dev_err(&edge_serial->serial->dev->dev, "rom_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len));
572 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
573 if (firmware >= &BootImage[BootSize]) {
578 dbg("Boot Image -- already up to date");
583 /************************************************************************
585 * Get string descriptor from device *
587 ************************************************************************/
588 static int get_string (struct usb_device *dev, int Id, char *string)
590 struct usb_string_descriptor StringDesc;
591 struct usb_string_descriptor *pStringDesc;
593 dbg("%s - USB String ID = %d", __FUNCTION__, Id );
595 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
599 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
605 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
610 unicode_to_ascii(string, pStringDesc->wData, pStringDesc->bLength/2-1);
613 return strlen(string);
618 /************************************************************************
620 * Get string descriptor from device
622 ************************************************************************/
623 static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc)
625 struct usb_string_descriptor StringDesc;
626 struct usb_string_descriptor *pStringDesc;
628 dbg("%s - USB String ID = %d", __FUNCTION__, Id );
630 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
634 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
640 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
645 *pRetDesc = pStringDesc;
650 static void get_product_info(struct edgeport_serial *edge_serial)
652 struct edgeport_product_info *product_info = &edge_serial->product_info;
654 memset (product_info, 0, sizeof(struct edgeport_product_info));
656 product_info->ProductId = (__u16)(edge_serial->serial->dev->descriptor.idProduct & ~ION_DEVICE_ID_GENERATION_2);
657 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
658 product_info->ProdInfoVer = 0;
660 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
661 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
662 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
663 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
665 product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion;
666 product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion;
667 product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber;
669 memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate));
671 // check if this is 2nd generation hardware
672 if (edge_serial->serial->dev->descriptor.idProduct & ION_DEVICE_ID_GENERATION_2) {
673 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion;
674 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion;
675 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber);
676 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
678 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion;
679 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion;
680 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber);
681 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
684 // Determine Product type and set appropriate flags
685 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
686 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
687 case ION_DEVICE_ID_EDGEPORT_4T:
688 case ION_DEVICE_ID_EDGEPORT_4:
689 case ION_DEVICE_ID_EDGEPORT_2:
690 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
691 case ION_DEVICE_ID_EDGEPORT_8:
692 case ION_DEVICE_ID_EDGEPORT_421:
693 case ION_DEVICE_ID_EDGEPORT_21:
694 case ION_DEVICE_ID_EDGEPORT_2_DIN:
695 case ION_DEVICE_ID_EDGEPORT_4_DIN:
696 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
697 product_info->IsRS232 = 1;
700 case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485
701 product_info->IsRS422 = 1;
702 product_info->IsRS485 = 1;
705 case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422
706 case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422
707 product_info->IsRS422 = 1;
711 // Dump Product Info structure
712 dbg("**Product Information:");
713 dbg(" ProductId %x", product_info->ProductId );
714 dbg(" NumPorts %d", product_info->NumPorts );
715 dbg(" ProdInfoVer %d", product_info->ProdInfoVer );
716 dbg(" IsServer %d", product_info->IsServer);
717 dbg(" IsRS232 %d", product_info->IsRS232 );
718 dbg(" IsRS422 %d", product_info->IsRS422 );
719 dbg(" IsRS485 %d", product_info->IsRS485 );
720 dbg(" RomSize %d", product_info->RomSize );
721 dbg(" RamSize %d", product_info->RamSize );
722 dbg(" CpuRev %x", product_info->CpuRev );
723 dbg(" BoardRev %x", product_info->BoardRev);
724 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
725 product_info->BootMinorVersion,
726 le16_to_cpu(product_info->BootBuildNumber));
727 dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion,
728 product_info->FirmwareMinorVersion,
729 le16_to_cpu(product_info->FirmwareBuildNumber));
730 dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0],
731 product_info->ManufactureDescDate[1],
732 product_info->ManufactureDescDate[2]+1900);
733 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
738 /************************************************************************/
739 /************************************************************************/
740 /* U S B C A L L B A C K F U N C T I O N S */
741 /* U S B C A L L B A C K F U N C T I O N S */
742 /************************************************************************/
743 /************************************************************************/
745 /*****************************************************************************
746 * edge_interrupt_callback
747 * this is the callback function for when we have received data on the
748 * interrupt endpoint.
749 *****************************************************************************/
750 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs)
752 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
753 struct edgeport_port *edge_port;
754 struct usb_serial_port *port;
755 unsigned char *data = urb->transfer_buffer;
756 int length = urb->actual_length;
763 dbg("%s", __FUNCTION__);
765 switch (urb->status) {
772 /* this urb is terminated, clean up */
773 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
776 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
780 // process this interrupt-read even if there are no ports open
782 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
785 bytes_avail = data[0] | (data[1] << 8);
787 edge_serial->rxBytesAvail += bytes_avail;
788 dbg("%s - bytes_avail = %d, rxBytesAvail %d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail);
790 if ((edge_serial->rxBytesAvail > 0) &&
791 (edge_serial->read_urb->status != -EINPROGRESS)) {
792 dbg(" --- Posting a read");
794 /* we have pending bytes on the bulk in pipe, send a request */
795 edge_serial->read_urb->dev = edge_serial->serial->dev;
796 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
798 dbg("%s - usb_submit_urb(read bulk) failed with result = %d", __FUNCTION__, result);
803 /* grab the txcredits for the ports if available */
806 while ((position < length) && (portNumber < edge_serial->serial->num_ports)) {
807 txCredits = data[position] | (data[position+1] << 8);
809 port = edge_serial->serial->port[portNumber];
810 edge_port = usb_get_serial_port_data(port);
811 if (edge_port->open) {
812 edge_port->txCredits += txCredits;
813 dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);
815 /* tell the tty driver that something has changed */
816 if (edge_port->port->tty)
817 wake_up_interruptible(&edge_port->port->tty->write_wait);
819 // Since we have more credit, check if more data can be sent
820 send_more_port_data(edge_serial, edge_port);
829 result = usb_submit_urb (urb, GFP_ATOMIC);
831 dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result);
836 /*****************************************************************************
837 * edge_bulk_in_callback
838 * this is the callback function for when we have received data on the
840 *****************************************************************************/
841 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
843 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
844 unsigned char *data = urb->transfer_buffer;
846 __u16 raw_data_length;
848 dbg("%s", __FUNCTION__);
851 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
855 if (urb->actual_length) {
856 raw_data_length = urb->actual_length;
858 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, raw_data_length, data);
860 /* decrement our rxBytes available by the number that we just got */
861 edge_serial->rxBytesAvail -= raw_data_length;
863 dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail);
865 process_rcvd_data (edge_serial, data, urb->actual_length);
867 /* check to see if there's any more data for us to read */
868 if ((edge_serial->rxBytesAvail > 0) &&
869 (edge_serial->read_urb->status != -EINPROGRESS)) {
870 dbg(" --- Posting a read");
872 /* there is, so resubmit our urb */
873 edge_serial->read_urb->dev = edge_serial->serial->dev;
874 status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
876 dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status);
883 /*****************************************************************************
884 * edge_bulk_out_data_callback
885 * this is the callback function for when we have finished sending serial data
886 * on the bulk out endpoint.
887 *****************************************************************************/
888 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs)
890 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
891 struct tty_struct *tty;
893 dbg("%s", __FUNCTION__);
896 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
899 tty = edge_port->port->tty;
901 if (tty && edge_port->open) {
902 /* let the tty driver wakeup if it has a special write_wakeup function */
903 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) {
904 (tty->ldisc.write_wakeup)(tty);
907 /* tell the tty driver that something has changed */
908 wake_up_interruptible(&tty->write_wait);
911 // Release the Write URB
912 edge_port->write_in_progress = FALSE;
914 // Check if more data needs to be sent
915 send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port);
919 /*****************************************************************************
921 * this is the callback function for when we have finished sending a command
922 * on the bulk out endpoint.
923 *****************************************************************************/
924 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs)
926 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
927 struct tty_struct *tty;
928 int status = urb->status;
930 dbg("%s", __FUNCTION__);
933 dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
936 /* clean up the transfer buffer */
937 if (urb->transfer_buffer != NULL) {
938 kfree(urb->transfer_buffer);
941 /* Free the command urb */
945 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status);
949 /* Get pointer to tty */
950 tty = edge_port->port->tty;
952 /* tell the tty driver that something has changed */
953 if (tty && edge_port->open)
954 wake_up_interruptible(&tty->write_wait);
956 /* we have completed the command */
957 edge_port->commandPending = FALSE;
958 wake_up_interruptible(&edge_port->wait_command);
962 /*****************************************************************************
963 * Driver tty interface functions
964 *****************************************************************************/
966 /*****************************************************************************
968 * this function is called by the tty driver when a port is opened
969 * If successful, we return 0
970 * Otherwise we return a negative error number.
971 *****************************************************************************/
972 static int edge_open (struct usb_serial_port *port, struct file * filp)
974 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
975 struct usb_serial *serial;
976 struct edgeport_serial *edge_serial;
980 dbg("%s - port %d", __FUNCTION__, port->number);
982 if (edge_port == NULL)
985 /* force low_latency on so that our tty_push actually forces the data through,
986 otherwise it is scheduled, and with high data rates (like with OHCI) data
989 port->tty->low_latency = 1;
991 /* see if we've set up our endpoint info yet (can't set it up in edge_startup
992 as the structures were not set up at that time.) */
993 serial = port->serial;
994 edge_serial = usb_get_serial_data(serial);
995 if (edge_serial == NULL) {
998 if (edge_serial->interrupt_in_buffer == NULL) {
999 struct usb_serial_port *port0 = serial->port[0];
1001 /* not set up yet, so do it now */
1002 edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer;
1003 edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress;
1004 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
1005 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
1006 edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress;
1007 edge_serial->read_urb = port0->read_urb;
1008 edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress;
1010 /* set up our interrupt urb */
1011 usb_fill_int_urb(edge_serial->interrupt_read_urb,
1013 usb_rcvintpipe(serial->dev,
1014 port0->interrupt_in_endpointAddress),
1015 port0->interrupt_in_buffer,
1016 edge_serial->interrupt_read_urb->transfer_buffer_length,
1017 edge_interrupt_callback, edge_serial,
1018 edge_serial->interrupt_read_urb->interval);
1020 /* set up our bulk in urb */
1021 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
1022 usb_rcvbulkpipe(serial->dev,
1023 port0->bulk_in_endpointAddress),
1024 port0->bulk_in_buffer,
1025 edge_serial->read_urb->transfer_buffer_length,
1026 edge_bulk_in_callback, edge_serial);
1028 /* start interrupt read for this edgeport
1029 * this interrupt will continue as long as the edgeport is connected */
1030 response = usb_submit_urb (edge_serial->interrupt_read_urb, GFP_KERNEL);
1032 dev_err(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, response);
1036 /* initialize our wait queues */
1037 init_waitqueue_head(&edge_port->wait_open);
1038 init_waitqueue_head(&edge_port->wait_chase);
1039 init_waitqueue_head(&edge_port->delta_msr_wait);
1040 init_waitqueue_head(&edge_port->wait_command);
1042 /* initialize our icount structure */
1043 memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1045 /* initialize our port settings */
1046 edge_port->txCredits = 0; /* Can't send any data yet */
1047 edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */
1048 edge_port->chaseResponsePending = FALSE;
1050 /* send a open port command */
1051 edge_port->openPending = TRUE;
1052 edge_port->open = FALSE;
1053 response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0);
1056 dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__);
1057 edge_port->openPending = FALSE;
1061 /* now wait for the port to be completely opened */
1062 timeout = OPEN_TIMEOUT;
1063 while (timeout && edge_port->openPending == TRUE) {
1064 timeout = interruptible_sleep_on_timeout (&edge_port->wait_open, timeout);
1067 if (edge_port->open == FALSE) {
1068 /* open timed out */
1069 dbg("%s - open timedout", __FUNCTION__);
1070 edge_port->openPending = FALSE;
1074 /* create the txfifo */
1075 edge_port->txfifo.head = 0;
1076 edge_port->txfifo.tail = 0;
1077 edge_port->txfifo.count = 0;
1078 edge_port->txfifo.size = edge_port->maxTxCredits;
1079 edge_port->txfifo.fifo = kmalloc (edge_port->maxTxCredits, GFP_KERNEL);
1081 if (!edge_port->txfifo.fifo) {
1082 dbg("%s - no memory", __FUNCTION__);
1083 edge_close (port, filp);
1087 /* Allocate a URB for the write */
1088 edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL);
1090 if (!edge_port->write_urb) {
1091 dbg("%s - no memory", __FUNCTION__);
1092 edge_close (port, filp);
1096 dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits);
1098 dbg("%s exited", __FUNCTION__);
1104 /************************************************************************
1106 * block_until_chase_response
1108 * This function will block the close until one of the following:
1109 * 1. Response to our Chase comes from Edgeport
1110 * 2. A timout of 10 seconds without activity has expired
1111 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
1113 ************************************************************************/
1114 static void block_until_chase_response(struct edgeport_port *edge_port)
1121 // Save Last credits
1122 lastCredits = edge_port->txCredits;
1124 // Did we get our Chase response
1125 if (edge_port->chaseResponsePending == FALSE) {
1126 dbg("%s - Got Chase Response", __FUNCTION__);
1128 // did we get all of our credit back?
1129 if (edge_port->txCredits == edge_port->maxTxCredits ) {
1130 dbg("%s - Got all credits", __FUNCTION__);
1135 // Block the thread for a while
1136 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1138 if (lastCredits == edge_port->txCredits) {
1139 // No activity.. count down.
1142 edge_port->chaseResponsePending = FALSE;
1143 dbg("%s - Chase TIMEOUT", __FUNCTION__);
1147 // Reset timout value back to 10 seconds
1148 dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits);
1155 /************************************************************************
1157 * block_until_tx_empty
1159 * This function will block the close until one of the following:
1161 * 2. The edgeport has stopped
1162 * 3. A timout of 3 seconds without activity has expired
1164 ************************************************************************/
1165 static void block_until_tx_empty (struct edgeport_port *edge_port)
1167 struct TxFifo *fifo = &edge_port->txfifo;
1169 int timeout = HZ/10;
1174 lastCount = fifo->count;
1176 // Is the Edgeport Buffer empty?
1177 if (lastCount == 0) {
1178 dbg("%s - TX Buffer Empty", __FUNCTION__);
1182 // Block the thread for a while
1183 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1185 dbg("%s wait", __FUNCTION__);
1187 if (lastCount == fifo->count) {
1188 // No activity.. count down.
1191 dbg("%s - TIMEOUT", __FUNCTION__);
1195 // Reset timout value back to seconds
1202 /*****************************************************************************
1204 * this function is called by the tty driver when a port is closed
1205 *****************************************************************************/
1206 static void edge_close (struct usb_serial_port *port, struct file * filp)
1208 struct edgeport_serial *edge_serial;
1209 struct edgeport_port *edge_port;
1212 dbg("%s - port %d", __FUNCTION__, port->number);
1214 edge_serial = usb_get_serial_data(port->serial);
1215 edge_port = usb_get_serial_port_data(port);
1216 if ((edge_serial == NULL) || (edge_port == NULL))
1219 // block until tx is empty
1220 block_until_tx_empty(edge_port);
1222 edge_port->closePending = TRUE;
1224 /* flush and chase */
1225 edge_port->chaseResponsePending = TRUE;
1227 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1228 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1230 // block until chase finished
1231 block_until_chase_response(edge_port);
1233 edge_port->chaseResponsePending = FALSE;
1236 /* close the port */
1237 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
1238 send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
1240 //port->close = TRUE;
1241 edge_port->closePending = FALSE;
1242 edge_port->open = FALSE;
1243 edge_port->openPending = FALSE;
1245 if (edge_port->write_urb) {
1246 usb_unlink_urb (edge_port->write_urb);
1249 if (edge_port->write_urb) {
1250 /* if this urb had a transfer buffer already (old transfer) free it */
1251 if (edge_port->write_urb->transfer_buffer != NULL) {
1252 kfree(edge_port->write_urb->transfer_buffer);
1254 usb_free_urb (edge_port->write_urb);
1256 if (edge_port->txfifo.fifo) {
1257 kfree(edge_port->txfifo.fifo);
1260 dbg("%s exited", __FUNCTION__);
1263 /*****************************************************************************
1265 * this function is called by the tty driver when data should be written to
1267 * If successful, we return the number of bytes written, otherwise we return
1268 * a negative error number.
1269 *****************************************************************************/
1270 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
1272 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1273 struct TxFifo *fifo;
1279 dbg("%s - port %d", __FUNCTION__, port->number);
1281 if (edge_port == NULL)
1284 // get a pointer to the Tx fifo
1285 fifo = &edge_port->txfifo;
1287 // calculate number of bytes to put in fifo
1288 copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));
1290 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__,
1291 port->number, count, edge_port->txCredits - fifo->count, copySize);
1293 /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
1294 if (copySize == 0) {
1295 dbg("%s - copySize = Zero", __FUNCTION__);
1300 // since we can never overflow the buffer we do not have to check for full condition
1302 // the copy is done is two parts -- first fill to the end of the buffer
1303 // then copy the reset from the start of the buffer
1305 bytesleft = fifo->size - fifo->head;
1306 firsthalf = min (bytesleft, copySize);
1307 dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft);
1309 /* now copy our data */
1311 if (copy_from_user(&fifo->fifo[fifo->head], data, firsthalf))
1314 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1316 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]);
1318 // update the index and size
1319 fifo->head += firsthalf;
1320 fifo->count += firsthalf;
1323 if (fifo->head == fifo->size) {
1327 secondhalf = copySize-firsthalf;
1330 dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf);
1332 if (copy_from_user(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf))
1335 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1337 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]);
1338 // update the index and size
1339 fifo->count += secondhalf;
1340 fifo->head += secondhalf;
1341 // No need to check for wrap since we can not get to end of fifo in this part
1344 send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port);
1346 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count);
1352 /************************************************************************
1354 * send_more_port_data()
1356 * This routine attempts to write additional UART transmit data
1357 * to a port over the USB bulk pipe. It is called (1) when new
1358 * data has been written to a port's TxBuffer from higher layers
1359 * (2) when the peripheral sends us additional TxCredits indicating
1360 * that it can accept more Tx data for a given port; and (3) when
1361 * a bulk write completes successfully and we want to see if we
1362 * can transmit more.
1364 ************************************************************************/
1365 static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port)
1367 struct TxFifo *fifo = &edge_port->txfifo;
1369 unsigned char *buffer;
1376 dbg("%s(%d)", __FUNCTION__, edge_port->port->number);
1378 if (edge_port->write_in_progress ||
1380 (fifo->count == 0)) {
1381 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress);
1385 // since the amount of data in the fifo will always fit into the
1386 // edgeport buffer we do not need to check the write length
1388 // Do we have enough credits for this port to make it worthwhile
1389 // to bother queueing a write. If it's too small, say a few bytes,
1390 // it's better to wait for more credits so we can do a larger
1392 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits)) {
1393 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits );
1398 edge_port->write_in_progress = TRUE;
1400 // get a pointer to the write_urb
1401 urb = edge_port->write_urb;
1403 /* if this urb had a transfer buffer already (old transfer) free it */
1404 if (urb->transfer_buffer != NULL) {
1405 kfree(urb->transfer_buffer);
1406 urb->transfer_buffer = NULL;
1409 /* build the data header for the buffer and port that we are about to send out */
1410 count = fifo->count;
1411 buffer = kmalloc (count+2, GFP_ATOMIC);
1412 if (buffer == NULL) {
1413 dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__);
1414 edge_port->write_in_progress = FALSE;
1417 buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
1418 buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count);
1420 /* now copy our data */
1421 bytesleft = fifo->size - fifo->tail;
1422 firsthalf = min (bytesleft, count);
1423 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1424 fifo->tail += firsthalf;
1425 fifo->count -= firsthalf;
1426 if (fifo->tail == fifo->size) {
1430 secondhalf = count-firsthalf;
1432 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf);
1433 fifo->tail += secondhalf;
1434 fifo->count -= secondhalf;
1438 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, count, &buffer[2]);
1440 /* fill up the urb with all of our data and submit it */
1441 usb_fill_bulk_urb (urb, edge_serial->serial->dev,
1442 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
1443 buffer, count+2, edge_bulk_out_data_callback, edge_port);
1445 /* decrement the number of credits we have by the number we just sent */
1446 edge_port->txCredits -= count;
1447 edge_port->icount.tx += count;
1449 urb->dev = edge_serial->serial->dev;
1450 status = usb_submit_urb(urb, GFP_ATOMIC);
1452 /* something went wrong */
1453 dbg("%s - usb_submit_urb(write bulk) failed", __FUNCTION__);
1454 edge_port->write_in_progress = FALSE;
1456 /* revert the credits as something bad happened. */
1457 edge_port->txCredits += count;
1458 edge_port->icount.tx -= count;
1460 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count);
1464 /*****************************************************************************
1466 * this function is called by the tty driver when it wants to know how many
1467 * bytes of data we can accept for a specific port.
1468 * If successful, we return the amount of room that we have for this port
1470 * Otherwise we return a negative error number.
1471 *****************************************************************************/
1472 static int edge_write_room (struct usb_serial_port *port)
1474 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1477 dbg("%s", __FUNCTION__);
1479 if (edge_port == NULL)
1481 if (edge_port->closePending == TRUE)
1484 dbg("%s - port %d", __FUNCTION__, port->number);
1486 if (!edge_port->open) {
1487 dbg("%s - port not opened", __FUNCTION__);
1491 // total of both buffers is still txCredit
1492 room = edge_port->txCredits - edge_port->txfifo.count;
1494 dbg("%s - returns %d", __FUNCTION__, room);
1499 /*****************************************************************************
1500 * edge_chars_in_buffer
1501 * this function is called by the tty driver when it wants to know how many
1502 * bytes of data we currently have outstanding in the port (data that has
1503 * been written, but hasn't made it out the port yet)
1504 * If successful, we return the number of bytes left to be written in the
1506 * Otherwise we return a negative error number.
1507 *****************************************************************************/
1508 static int edge_chars_in_buffer (struct usb_serial_port *port)
1510 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1513 dbg("%s", __FUNCTION__);
1515 if (edge_port == NULL)
1517 if (edge_port->closePending == TRUE)
1520 if (!edge_port->open) {
1521 dbg("%s - port not opened", __FUNCTION__);
1525 num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;
1527 dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars);
1534 /*****************************************************************************
1536 * this function is called by the tty driver when it wants to stop the data
1537 * being read from the port.
1538 *****************************************************************************/
1539 static void edge_throttle (struct usb_serial_port *port)
1541 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1542 struct tty_struct *tty;
1545 dbg("%s - port %d", __FUNCTION__, port->number);
1547 if (edge_port == NULL)
1550 if (!edge_port->open) {
1551 dbg("%s - port not opened", __FUNCTION__);
1557 dbg ("%s - no tty available", __FUNCTION__);
1561 /* if we are implementing XON/XOFF, send the stop character */
1563 unsigned char stop_char = STOP_CHAR(tty);
1564 status = edge_write (port, 0, &stop_char, 1);
1570 /* if we are implementing RTS/CTS, toggle that line */
1571 if (tty->termios->c_cflag & CRTSCTS) {
1572 edge_port->shadowMCR &= ~MCR_RTS;
1573 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1583 /*****************************************************************************
1585 * this function is called by the tty driver when it wants to resume the data
1586 * being read from the port (called after SerialThrottle is called)
1587 *****************************************************************************/
1588 static void edge_unthrottle (struct usb_serial_port *port)
1590 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1591 struct tty_struct *tty;
1594 dbg("%s - port %d", __FUNCTION__, port->number);
1596 if (edge_port == NULL)
1599 if (!edge_port->open) {
1600 dbg("%s - port not opened", __FUNCTION__);
1606 dbg ("%s - no tty available", __FUNCTION__);
1610 /* if we are implementing XON/XOFF, send the start character */
1612 unsigned char start_char = START_CHAR(tty);
1613 status = edge_write (port, 0, &start_char, 1);
1619 /* if we are implementing RTS/CTS, toggle that line */
1620 if (tty->termios->c_cflag & CRTSCTS) {
1621 edge_port->shadowMCR |= MCR_RTS;
1622 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1632 /*****************************************************************************
1634 * this function is called by the tty driver when it wants to change the termios structure
1635 *****************************************************************************/
1636 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1638 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1639 struct tty_struct *tty = port->tty;
1642 if (!port->tty || !port->tty->termios) {
1643 dbg ("%s - no tty or termios", __FUNCTION__);
1647 cflag = tty->termios->c_cflag;
1648 /* check that they really want us to change something */
1650 if ((cflag == old_termios->c_cflag) &&
1651 (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1652 dbg("%s - nothing to change", __FUNCTION__);
1657 dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
1658 tty->termios->c_cflag,
1659 RELEVANT_IFLAG(tty->termios->c_iflag));
1661 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
1662 old_termios->c_cflag,
1663 RELEVANT_IFLAG(old_termios->c_iflag));
1666 dbg("%s - port %d", __FUNCTION__, port->number);
1668 if (edge_port == NULL)
1671 if (!edge_port->open) {
1672 dbg("%s - port not opened", __FUNCTION__);
1676 /* change the port settings to the new ones specified */
1677 change_port_settings (edge_port, old_termios);
1683 /*****************************************************************************
1684 * get_lsr_info - get line status register info
1686 * Purpose: Let user call ioctl() to get info when the UART physically
1687 * is emptied. On bus types like RS485, the transmitter must
1688 * release the bus after transmitting. This must be done when
1689 * the transmit shift register is empty, not be done when the
1690 * transmit holding register is empty. This functionality
1691 * allows an RS485 driver to be written in user space.
1692 *****************************************************************************/
1693 static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value)
1695 unsigned int result = 0;
1697 if (edge_port->maxTxCredits == edge_port->txCredits &&
1698 edge_port->txfifo.count == 0) {
1699 dbg("%s -- Empty", __FUNCTION__);
1700 result = TIOCSER_TEMT;
1703 if (copy_to_user(value, &result, sizeof(int)))
1708 static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value)
1710 unsigned int result = 0;
1711 struct tty_struct *tty = edge_port->port->tty;
1714 return -ENOIOCTLCMD;
1716 result = tty->read_cnt;
1718 dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result);
1719 if (copy_to_user(value, &result, sizeof(int)))
1722 return -ENOIOCTLCMD;
1725 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
1727 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1730 dbg("%s - port %d", __FUNCTION__, port->number);
1732 mcr = edge_port->shadowMCR;
1733 if (set & TIOCM_RTS)
1735 if (set & TIOCM_DTR)
1737 if (set & TIOCM_LOOP)
1738 mcr |= MCR_LOOPBACK;
1740 if (clear & TIOCM_RTS)
1742 if (clear & TIOCM_DTR)
1744 if (clear & TIOCM_LOOP)
1745 mcr &= ~MCR_LOOPBACK;
1747 edge_port->shadowMCR = mcr;
1749 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1754 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
1756 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1757 unsigned int result = 0;
1761 dbg("%s - port %d", __FUNCTION__, port->number);
1763 msr = edge_port->shadowMSR;
1764 mcr = edge_port->shadowMCR;
1765 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1766 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1767 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1768 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1769 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1770 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1773 dbg("%s -- %x", __FUNCTION__, result);
1778 static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
1780 struct serial_struct tmp;
1785 memset(&tmp, 0, sizeof(tmp));
1787 tmp.type = PORT_16550A;
1788 tmp.line = edge_port->port->serial->minor;
1789 tmp.port = edge_port->port->number;
1791 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1792 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1793 tmp.baud_base = 9600;
1794 tmp.close_delay = 5*HZ;
1795 tmp.closing_wait = 30*HZ;
1796 // tmp.custom_divisor = state->custom_divisor;
1797 // tmp.hub6 = state->hub6;
1798 // tmp.io_type = state->io_type;
1800 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1807 /*****************************************************************************
1809 * this function handles any ioctl calls to the driver
1810 *****************************************************************************/
1811 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
1813 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1814 struct async_icount cnow;
1815 struct async_icount cprev;
1816 struct serial_icounter_struct icount;
1819 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
1822 // return number of bytes available
1824 dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
1825 return get_number_bytes_avail(edge_port, (unsigned int __user *) arg);
1829 dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
1830 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1834 dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number);
1835 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1838 dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number);
1842 dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
1843 cprev = edge_port->icount;
1845 interruptible_sleep_on(&edge_port->delta_msr_wait);
1846 /* see if a signal did it */
1847 if (signal_pending(current))
1848 return -ERESTARTSYS;
1849 cnow = edge_port->icount;
1850 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1851 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1852 return -EIO; /* no change => error */
1853 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1854 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1855 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
1856 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
1865 cnow = edge_port->icount;
1866 memset(&icount, 0, sizeof(icount));
1867 icount.cts = cnow.cts;
1868 icount.dsr = cnow.dsr;
1869 icount.rng = cnow.rng;
1870 icount.dcd = cnow.dcd;
1871 icount.rx = cnow.rx;
1872 icount.tx = cnow.tx;
1873 icount.frame = cnow.frame;
1874 icount.overrun = cnow.overrun;
1875 icount.parity = cnow.parity;
1876 icount.brk = cnow.brk;
1877 icount.buf_overrun = cnow.buf_overrun;
1879 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx );
1880 if (copy_to_user((void __user *)arg, &icount, sizeof(icount)))
1885 return -ENOIOCTLCMD;
1889 /*****************************************************************************
1891 * this function sends a break to the port
1892 *****************************************************************************/
1893 static void edge_break (struct usb_serial_port *port, int break_state)
1895 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1898 /* flush and chase */
1899 edge_port->chaseResponsePending = TRUE;
1901 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1902 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1904 // block until chase finished
1905 block_until_chase_response(edge_port);
1907 edge_port->chaseResponsePending = FALSE;
1910 if (break_state == -1) {
1911 dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__);
1912 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
1914 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__);
1915 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
1918 dbg("%s - error sending break set/clear command.", __FUNCTION__);
1925 /*****************************************************************************
1927 * this function handles the data received on the bulk in pipe.
1928 *****************************************************************************/
1929 static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength)
1931 struct usb_serial_port *port;
1932 struct edgeport_port *edge_port;
1933 struct tty_struct *tty;
1934 __u16 lastBufferLength;
1938 dbg("%s", __FUNCTION__);
1940 lastBufferLength = bufferLength + 1;
1942 while (bufferLength > 0) {
1943 /* failsafe incase we get a message that we don't understand */
1944 if (lastBufferLength == bufferLength) {
1945 dbg("%s - stuck in loop, exiting it.", __FUNCTION__);
1948 lastBufferLength = bufferLength;
1950 switch (edge_serial->rxState) {
1952 edge_serial->rxHeader1 = *buffer;
1956 if (bufferLength == 0) {
1957 edge_serial->rxState = EXPECT_HDR2;
1960 /* otherwise, drop on through */
1963 edge_serial->rxHeader2 = *buffer;
1967 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2);
1969 // Process depending on whether this header is
1972 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1973 // Decode this status header and goto EXPECT_HDR1 (if we
1974 // can process the status with only 2 bytes), or goto
1975 // EXPECT_HDR3 to get the third byte.
1977 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1978 edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1);
1980 if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) {
1981 // This status needs additional bytes. Save what we have
1982 // and then wait for more data.
1983 edge_serial->rxStatusParam = edge_serial->rxHeader2;
1985 edge_serial->rxState = EXPECT_HDR3;
1989 // We have all the header bytes, process the status now
1990 process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0);
1992 edge_serial->rxState = EXPECT_HDR1;
1995 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1996 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2);
1998 dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining);
2000 //ASSERT( DevExt->RxPort < DevExt->NumPorts );
2001 //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
2003 if (bufferLength == 0 ) {
2004 edge_serial->rxState = EXPECT_DATA;
2007 // Else, drop through
2010 case EXPECT_DATA: // Expect data
2012 if (bufferLength < edge_serial->rxBytesRemaining) {
2013 rxLen = bufferLength;
2014 edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer
2016 // BufLen >= RxBytesRemaining
2017 rxLen = edge_serial->rxBytesRemaining;
2018 edge_serial->rxState = EXPECT_HDR1; // Start another header next time
2021 bufferLength -= rxLen;
2022 edge_serial->rxBytesRemaining -= rxLen;
2024 /* spit this data back into the tty driver if this port is open */
2026 port = edge_serial->serial->port[edge_serial->rxPort];
2027 edge_port = usb_get_serial_port_data(port);
2028 if (edge_port->open) {
2029 tty = edge_port->port->tty;
2031 dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort);
2032 for (i = 0; i < rxLen ; ++i) {
2033 /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
2034 if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
2035 tty_flip_buffer_push(tty);
2037 /* this doesn't actually push the data through unless tty->low_latency is set */
2038 tty_insert_flip_char(tty, buffer[i], 0);
2040 tty_flip_buffer_push(tty);
2042 edge_port->icount.rx += rxLen;
2049 case EXPECT_HDR3: // Expect 3rd byte of status header
2050 edge_serial->rxHeader3 = *buffer;
2054 // We have all the header bytes, process the status now
2055 process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3);
2056 edge_serial->rxState = EXPECT_HDR1;
2066 /*****************************************************************************
2067 * process_rcvd_status
2068 * this function handles the any status messages received on the bulk in pipe.
2069 *****************************************************************************/
2070 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3)
2072 struct usb_serial_port *port;
2073 struct edgeport_port *edge_port;
2074 __u8 code = edge_serial->rxStatusCode;
2076 /* switch the port pointer to the one being currently talked about */
2077 port = edge_serial->serial->port[edge_serial->rxPort];
2078 edge_port = usb_get_serial_port_data(port);
2079 if (edge_port == NULL) {
2080 dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort);
2084 dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort);
2086 if (code == IOSP_EXT_STATUS) {
2088 case IOSP_EXT_STATUS_CHASE_RSP:
2089 // we want to do EXT status regardless of port open/closed
2090 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 );
2091 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call
2092 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
2093 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
2094 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
2095 // like wait longer in block_until_chase_response, but for now we don't.
2096 edge_port->chaseResponsePending = FALSE;
2097 wake_up_interruptible (&edge_port->wait_chase);
2100 case IOSP_EXT_STATUS_RX_CHECK_RSP:
2101 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 );
2102 //Port->RxCheckRsp = TRUE;
2107 if (code == IOSP_STATUS_OPEN_RSP) {
2108 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
2109 edge_port->maxTxCredits = edge_port->txCredits;
2110 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits);
2111 handle_new_msr (edge_port, byte2);
2113 /* send the current line settings to the port so we are in sync with any further termios calls */
2114 if (edge_port->port->tty)
2115 change_port_settings (edge_port, edge_port->port->tty->termios);
2117 /* we have completed the open */
2118 edge_port->openPending = FALSE;
2119 edge_port->open = TRUE;
2120 wake_up_interruptible(&edge_port->wait_open);
2124 // If port is closed, silently discard all rcvd status. We can
2125 // have cases where buffered status is received AFTER the close
2126 // port command is sent to the Edgeport.
2127 if ((!edge_port->open ) || (edge_port->closePending)) {
2132 // Not currently sent by Edgeport
2133 case IOSP_STATUS_LSR:
2134 dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2135 handle_new_lsr (edge_port, FALSE, byte2, 0);
2138 case IOSP_STATUS_LSR_DATA:
2139 dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2140 // byte2 is LSR Register
2141 // byte3 is broken data byte
2142 handle_new_lsr (edge_port, TRUE, byte2, byte3);
2145 // case IOSP_EXT_4_STATUS:
2146 // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2149 case IOSP_STATUS_MSR:
2150 dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2152 // Process this new modem status and generate appropriate
2153 // events, etc, based on the new status. This routine
2154 // also saves the MSR in Port->ShadowMsr.
2155 handle_new_msr(edge_port, byte2);
2159 dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code);
2167 /*****************************************************************************
2169 * this function handles any change to the msr register for a port.
2170 *****************************************************************************/
2171 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2173 struct async_icount *icount;
2175 dbg("%s %02x", __FUNCTION__, newMsr);
2177 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2178 icount = &edge_port->icount;
2180 /* update input line counters */
2181 if (newMsr & EDGEPORT_MSR_DELTA_CTS) {
2184 if (newMsr & EDGEPORT_MSR_DELTA_DSR) {
2187 if (newMsr & EDGEPORT_MSR_DELTA_CD) {
2190 if (newMsr & EDGEPORT_MSR_DELTA_RI) {
2193 wake_up_interruptible(&edge_port->delta_msr_wait);
2196 /* Save the new modem status */
2197 edge_port->shadowMSR = newMsr & 0xf0;
2203 /*****************************************************************************
2205 * this function handles any change to the lsr register for a port.
2206 *****************************************************************************/
2207 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data)
2209 __u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2210 struct async_icount *icount;
2212 dbg("%s - %02x", __FUNCTION__, newLsr);
2214 edge_port->shadowLSR = lsr;
2216 if (newLsr & LSR_BREAK) {
2218 // Parity and Framing errors only count if they
2219 // occur exclusive of a break being
2222 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2225 /* Place LSR data byte into Rx buffer */
2226 if (lsrData && edge_port->port->tty) {
2227 tty_insert_flip_char(edge_port->port->tty, data, 0);
2228 tty_flip_buffer_push(edge_port->port->tty);
2231 /* update input line counters */
2232 icount = &edge_port->icount;
2233 if (newLsr & LSR_BREAK) {
2236 if (newLsr & LSR_OVER_ERR) {
2239 if (newLsr & LSR_PAR_ERR) {
2242 if (newLsr & LSR_FRM_ERR) {
2250 /****************************************************************************
2252 * writes a number of bytes to the Edgeport device's sram starting at the
2254 * If successful returns the number of bytes written, otherwise it returns
2255 * a negative error number of the problem.
2256 ****************************************************************************/
2257 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2260 __u16 current_length;
2261 unsigned char *transfer_buffer;
2263 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2265 transfer_buffer = kmalloc (64, GFP_KERNEL);
2266 if (!transfer_buffer) {
2267 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2271 /* need to split these writes up into 64 byte chunks */
2273 while (length > 0) {
2275 current_length = 64;
2277 current_length = length;
2279 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2280 memcpy (transfer_buffer, data, current_length);
2281 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM,
2282 0x40, addr, extAddr, transfer_buffer, current_length, 300);
2285 length -= current_length;
2286 addr += current_length;
2287 data += current_length;
2290 kfree (transfer_buffer);
2295 /****************************************************************************
2297 * writes a number of bytes to the Edgeport device's ROM starting at the
2299 * If successful returns the number of bytes written, otherwise it returns
2300 * a negative error number of the problem.
2301 ****************************************************************************/
2302 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2305 __u16 current_length;
2306 unsigned char *transfer_buffer;
2308 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2310 transfer_buffer = kmalloc (64, GFP_KERNEL);
2311 if (!transfer_buffer) {
2312 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2316 /* need to split these writes up into 64 byte chunks */
2318 while (length > 0) {
2320 current_length = 64;
2322 current_length = length;
2324 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2325 memcpy (transfer_buffer, data, current_length);
2326 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM,
2327 0x40, addr, extAddr, transfer_buffer, current_length, 300);
2330 length -= current_length;
2331 addr += current_length;
2332 data += current_length;
2335 kfree (transfer_buffer);
2340 /****************************************************************************
2342 * reads a number of bytes from the Edgeport device starting at the given
2344 * If successful returns the number of bytes read, otherwise it returns
2345 * a negative error number of the problem.
2346 ****************************************************************************/
2347 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2350 __u16 current_length;
2351 unsigned char *transfer_buffer;
2353 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2355 transfer_buffer = kmalloc (64, GFP_KERNEL);
2356 if (!transfer_buffer) {
2357 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2361 /* need to split these reads up into 64 byte chunks */
2363 while (length > 0) {
2365 current_length = 64;
2367 current_length = length;
2369 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2370 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM,
2371 0xC0, addr, extAddr, transfer_buffer, current_length, 300);
2374 memcpy (data, transfer_buffer, current_length);
2375 length -= current_length;
2376 addr += current_length;
2377 data += current_length;
2380 kfree (transfer_buffer);
2385 /****************************************************************************
2387 * Is used to send a IOSP message to the Edgeport device
2388 ****************************************************************************/
2389 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param)
2391 unsigned char *buffer;
2392 unsigned char *currentCommand;
2396 dbg("%s - %d, %d", __FUNCTION__, command, param);
2398 buffer = kmalloc (10, GFP_ATOMIC);
2400 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10);
2404 currentCommand = buffer;
2406 MAKE_CMD_EXT_CMD (¤tCommand, &length,
2407 edge_port->port->number - edge_port->port->serial->minor,
2410 status = write_cmd_usb (edge_port, buffer, length);
2412 /* something bad happened, let's free up the memory */
2420 /*****************************************************************************
2422 * this function writes the given buffer out to the bulk write endpoint.
2423 *****************************************************************************/
2424 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length)
2426 struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
2431 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer);
2433 /* Allocate our next urb */
2434 urb = usb_alloc_urb (0, GFP_ATOMIC);
2439 dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
2441 usb_fill_bulk_urb (urb, edge_serial->serial->dev,
2442 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
2443 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2445 edge_port->commandPending = TRUE;
2446 status = usb_submit_urb(urb, GFP_ATOMIC);
2449 /* something went wrong */
2450 dbg("%s - usb_submit_urb(write bulk) failed", __FUNCTION__);
2451 usb_unlink_urb (urb);
2456 // wait for command to finish
2457 timeout = COMMAND_TIMEOUT;
2459 while (timeout && edge_port->commandPending == TRUE) {
2460 timeout = interruptible_sleep_on_timeout (&edge_port->wait_command, timeout);
2463 if (edge_port->commandPending == TRUE) {
2464 /* command timed out */
2465 dbg("%s - command timed out", __FUNCTION__);
2473 /*****************************************************************************
2474 * send_cmd_write_baud_rate
2475 * this function sends the proper command to change the baud rate of the
2477 *****************************************************************************/
2478 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate)
2480 unsigned char *cmdBuffer;
2481 unsigned char *currCmd;
2485 unsigned char number = edge_port->port->number - edge_port->port->serial->minor;
2487 dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);
2489 status = calc_baud_rate_divisor (baudRate, &divisor);
2491 dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__);
2495 // Alloc memory for the string of commands.
2496 cmdBuffer = kmalloc (0x100, GFP_ATOMIC);
2498 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100);
2501 currCmd = cmdBuffer;
2503 // Enable access to divisor latch
2504 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE );
2506 // Write the divisor itself
2507 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) );
2508 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) );
2510 // Restore original value to disable access to divisor latch
2511 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR);
2513 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen );
2515 /* something bad happened, let's free up the memory */
2523 /*****************************************************************************
2524 * calc_baud_rate_divisor
2525 * this function calculates the proper baud rate divisor for the specified
2527 *****************************************************************************/
2528 static int calc_baud_rate_divisor (int baudrate, int *divisor)
2536 dbg("%s - %d", __FUNCTION__, baudrate);
2538 for (i = 0; i < NUM_ENTRIES(divisor_table); i++) {
2539 if ( divisor_table[i].BaudRate == baudrate ) {
2540 *divisor = divisor_table[i].Divisor;
2545 // We have tried all of the standard baud rates
2546 // lets try to calculate the divisor for this baud rate
2547 // Make sure the baud rate is reasonable
2548 if (baudrate < 230400) {
2550 custom = (__u16)(230400L / baudrate);
2552 // Check for round off
2553 round1 = (__u16)(2304000L / baudrate);
2554 round = (__u16)(round1 - (custom * 10));
2560 dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom);
2568 /*****************************************************************************
2569 * send_cmd_write_uart_register
2570 * this function builds up a uart register message and sends to to the device.
2571 *****************************************************************************/
2572 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue)
2574 unsigned char *cmdBuffer;
2575 unsigned char *currCmd;
2576 unsigned long cmdLen = 0;
2579 dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue);
2581 // Alloc memory for the string of commands.
2582 cmdBuffer = kmalloc (0x10, GFP_ATOMIC);
2583 if (cmdBuffer == NULL ) {
2587 currCmd = cmdBuffer;
2589 // Build a cmd in the buffer to write the given register
2590 MAKE_CMD_WRITE_REG (&currCmd, &cmdLen,
2591 edge_port->port->number - edge_port->port->serial->minor,
2594 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2596 /* something bad happened, let's free up the memory */
2604 /*****************************************************************************
2605 * change_port_settings
2606 * This routine is called to set the UART on the device to match the specified
2608 *****************************************************************************/
2609 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2611 struct tty_struct *tty;
2622 dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2624 if ((!edge_port->open) &&
2625 (!edge_port->openPending)) {
2626 dbg("%s - port not opened", __FUNCTION__);
2630 tty = edge_port->port->tty;
2633 dbg("%s - no tty structures", __FUNCTION__);
2637 cflag = tty->termios->c_cflag;
2639 switch (cflag & CSIZE) {
2640 case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break;
2641 case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break;
2642 case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break;
2644 case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break;
2647 lParity = LCR_PAR_NONE;
2648 if (cflag & PARENB) {
2649 if (cflag & PARODD) {
2650 lParity = LCR_PAR_ODD;
2651 dbg("%s - parity = odd", __FUNCTION__);
2653 lParity = LCR_PAR_EVEN;
2654 dbg("%s - parity = even", __FUNCTION__);
2657 dbg("%s - parity = none", __FUNCTION__);
2660 if (cflag & CSTOPB) {
2662 dbg("%s - stop bits = 2", __FUNCTION__);
2665 dbg("%s - stop bits = 1", __FUNCTION__);
2668 /* figure out the flow control settings */
2669 rxFlow = txFlow = 0x00;
2670 if (cflag & CRTSCTS) {
2671 rxFlow |= IOSP_RX_FLOW_RTS;
2672 txFlow |= IOSP_TX_FLOW_CTS;
2673 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2675 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2678 /* if we are implementing XON/XOFF, set the start and stop character in the device */
2679 if (I_IXOFF(tty) || I_IXON(tty)) {
2680 unsigned char stop_char = STOP_CHAR(tty);
2681 unsigned char start_char = START_CHAR(tty);
2683 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XON_CHAR, start_char);
2684 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char);
2686 /* if we are implementing INBOUND XON/XOFF */
2688 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2689 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2691 dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2694 /* if we are implementing OUTBOUND XON/XOFF */
2696 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2697 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2699 dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2703 /* Set flow control to the configured value */
2704 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2705 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2708 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2709 edge_port->shadowLCR |= (lData | lParity | lStop);
2711 edge_port->validDataMask = mask;
2713 /* Send the updated LCR value to the EdgePort */
2714 status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR);
2719 /* set up the MCR register and send it to the EdgePort */
2720 edge_port->shadowMCR = MCR_MASTER_IE;
2721 if (cflag & CBAUD) {
2722 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2724 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
2729 /* Determine divisor based on baud rate */
2730 baud = tty_get_baud_rate(tty);
2732 /* pick a default, any default... */
2736 dbg("%s - baud rate = %d", __FUNCTION__, baud);
2737 status = send_cmd_write_baud_rate (edge_port, baud);
2743 /****************************************************************************
2745 * Turns a string from Unicode into ASCII.
2746 * Doesn't do a good job with any characters that are outside the normal
2747 * ASCII range, but it's only for debugging...
2748 * NOTE: expects the unicode in LE format
2749 ****************************************************************************/
2750 static void unicode_to_ascii (char *string, short *unicode, int unicode_size)
2753 for (i = 0; i < unicode_size; ++i) {
2754 string[i] = (char)(le16_to_cpu(unicode[i]));
2756 string[unicode_size] = 0x00;
2760 /****************************************************************************
2761 * get_manufacturing_desc
2762 * reads in the manufacturing descriptor and stores it into the serial
2764 ****************************************************************************/
2765 static void get_manufacturing_desc (struct edgeport_serial *edge_serial)
2769 dbg("getting manufacturer descriptor");
2771 response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2772 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN,
2773 (__u8 *)(&edge_serial->manuf_descriptor));
2776 dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n");
2779 dbg("**Manufacturer Descriptor");
2780 dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize);
2781 dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize);
2782 dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev);
2783 dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev);
2784 dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts);
2785 dbg(" DescDate: %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900);
2786 unicode_to_ascii (string, edge_serial->manuf_descriptor.SerialNumber, edge_serial->manuf_descriptor.SerNumLength/2-1);
2787 dbg(" SerialNumber: %s", string);
2788 unicode_to_ascii (string, edge_serial->manuf_descriptor.AssemblyNumber, edge_serial->manuf_descriptor.AssemblyNumLength/2-1);
2789 dbg(" AssemblyNumber: %s", string);
2790 unicode_to_ascii (string, edge_serial->manuf_descriptor.OemAssyNumber, edge_serial->manuf_descriptor.OemAssyNumLength/2-1);
2791 dbg(" OemAssyNumber: %s", string);
2792 dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType);
2793 dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid);
2794 dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig);
2799 /****************************************************************************
2801 * reads in the bootloader descriptor and stores it into the serial
2803 ****************************************************************************/
2804 static void get_boot_desc (struct edgeport_serial *edge_serial)
2808 dbg("getting boot descriptor");
2810 response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2811 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN,
2812 (__u8 *)(&edge_serial->boot_descriptor));
2815 dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n");
2817 dbg("**Boot Descriptor:");
2818 dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2819 dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion);
2820 dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion);
2821 dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2822 dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2823 dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0);
2824 dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1);
2829 /****************************************************************************
2830 * load_application_firmware
2831 * This is called to load the application firmware to the device
2832 ****************************************************************************/
2833 static void load_application_firmware (struct edgeport_serial *edge_serial)
2835 struct edge_firmware_image_record *record;
2836 unsigned char *firmware;
2837 unsigned char *FirmwareImage;
2842 switch (edge_serial->product_info.iDownloadFile) {
2843 case EDGE_DOWNLOAD_FILE_I930:
2844 dbg("downloading firmware version (930) %d.%d.%d",
2845 OperationalCodeImageVersion_GEN1.MajorVersion,
2846 OperationalCodeImageVersion_GEN1.MinorVersion,
2847 OperationalCodeImageVersion_GEN1.BuildNumber);
2848 firmware = &OperationalCodeImage_GEN1[0];
2849 FirmwareImage = &OperationalCodeImage_GEN1[0];
2850 ImageSize = sizeof(OperationalCodeImage_GEN1);
2853 case EDGE_DOWNLOAD_FILE_80251:
2854 dbg("downloading firmware version (80251) %d.%d.%d",
2855 OperationalCodeImageVersion_GEN2.MajorVersion,
2856 OperationalCodeImageVersion_GEN2.MinorVersion,
2857 OperationalCodeImageVersion_GEN2.BuildNumber);
2858 firmware = &OperationalCodeImage_GEN2[0];
2859 FirmwareImage = &OperationalCodeImage_GEN2[0];
2860 ImageSize = sizeof(OperationalCodeImage_GEN2);
2863 case EDGE_DOWNLOAD_FILE_NONE:
2864 dbg ("No download file specified, skipping download\n");
2873 record = (struct edge_firmware_image_record *)firmware;
2874 response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
2876 dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), record->Len);
2879 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
2880 if (firmware >= &FirmwareImage[ImageSize]) {
2885 dbg("sending exec_dl_code");
2886 response = usb_control_msg (edge_serial->serial->dev,
2887 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2888 USB_REQUEST_ION_EXEC_DL_CODE,
2889 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2897 /****************************************************************************
2899 ****************************************************************************/
2900 static int edge_startup (struct usb_serial *serial)
2902 struct edgeport_serial *edge_serial;
2903 struct edgeport_port *edge_port;
2904 struct usb_device *dev;
2909 /* create our private serial structure */
2910 edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
2911 if (edge_serial == NULL) {
2912 dev_err(&serial->dev->dev, "%s - Out of memory", __FUNCTION__);
2915 memset (edge_serial, 0, sizeof(struct edgeport_serial));
2916 edge_serial->serial = serial;
2917 usb_set_serial_data(serial, edge_serial);
2919 /* get the name for the device from the device */
2920 if ( (i = get_string(dev, dev->descriptor.iManufacturer, &edge_serial->name[0])) != 0) {
2921 edge_serial->name[i-1] = ' ';
2924 get_string(dev, dev->descriptor.iProduct, &edge_serial->name[i]);
2926 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2928 /* get the manufacturing descriptor for this device */
2929 get_manufacturing_desc (edge_serial);
2931 /* get the boot descriptor */
2932 get_boot_desc (edge_serial);
2934 get_product_info(edge_serial);
2936 /* set the number of ports from the manufacturing description */
2937 /* serial->num_ports = serial->product_info.NumPorts; */
2938 if (edge_serial->product_info.NumPorts != serial->num_ports) {
2939 warn("%s - Device Reported %d serial ports vs core "
2940 "thinking we have %d ports, email greg@kroah.com this info.",
2941 __FUNCTION__, edge_serial->product_info.NumPorts,
2945 dbg("%s - time 1 %ld", __FUNCTION__, jiffies);
2947 /* now load the application firmware into this device */
2948 load_application_firmware (edge_serial);
2950 dbg("%s - time 2 %ld", __FUNCTION__, jiffies);
2952 /* Check current Edgeport EEPROM and update if necessary */
2953 update_edgeport_E2PROM (edge_serial);
2955 dbg("%s - time 3 %ld", __FUNCTION__, jiffies);
2957 /* set the configuration to use #1 */
2958 // dbg("set_configuration 1");
2959 // usb_set_configuration (dev, 1);
2961 /* we set up the pointers to the endpoints in the edge_open function,
2962 * as the structures aren't created yet. */
2964 /* set up our port private structures */
2965 for (i = 0; i < serial->num_ports; ++i) {
2966 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
2967 if (edge_port == NULL) {
2968 dev_err(&serial->dev->dev, "%s - Out of memory", __FUNCTION__);
2969 usb_set_serial_data(serial, NULL);
2973 memset (edge_port, 0, sizeof(struct edgeport_port));
2974 edge_port->port = serial->port[i];
2975 usb_set_serial_port_data(serial->port[i], edge_port);
2983 /****************************************************************************
2985 * This function is called whenever the device is removed from the usb bus.
2986 ****************************************************************************/
2987 static void edge_shutdown (struct usb_serial *serial)
2991 dbg("%s", __FUNCTION__);
2993 /* stop reads and writes on all ports */
2994 for (i=0; i < serial->num_ports; ++i) {
2995 kfree (usb_get_serial_port_data(serial->port[i]));
2996 usb_set_serial_port_data(serial->port[i], NULL);
2998 kfree (usb_get_serial_data(serial));
2999 usb_set_serial_data(serial, NULL);
3003 /****************************************************************************
3005 * This is called by the module subsystem, or on startup to initialize us
3006 ****************************************************************************/
3007 static int __init edgeport_init(void)
3010 retval = usb_serial_register(&edgeport_1port_device);
3012 goto failed_1port_device_register;
3013 retval = usb_serial_register(&edgeport_2port_device);
3015 goto failed_2port_device_register;
3016 retval = usb_serial_register(&edgeport_4port_device);
3018 goto failed_4port_device_register;
3019 retval = usb_serial_register(&edgeport_8port_device);
3021 goto failed_8port_device_register;
3022 retval = usb_register(&io_driver);
3024 goto failed_usb_register;
3025 info(DRIVER_DESC " " DRIVER_VERSION);
3027 failed_usb_register:
3028 usb_serial_deregister(&edgeport_8port_device);
3029 failed_8port_device_register:
3030 usb_serial_deregister(&edgeport_4port_device);
3031 failed_4port_device_register:
3032 usb_serial_deregister(&edgeport_2port_device);
3033 failed_2port_device_register:
3034 usb_serial_deregister(&edgeport_1port_device);
3035 failed_1port_device_register:
3041 /****************************************************************************
3043 * Called when the driver is about to be unloaded.
3044 ****************************************************************************/
3045 static void __exit edgeport_exit (void)
3047 usb_deregister (&io_driver);
3048 usb_serial_deregister (&edgeport_1port_device);
3049 usb_serial_deregister (&edgeport_2port_device);
3050 usb_serial_deregister (&edgeport_4port_device);
3051 usb_serial_deregister (&edgeport_8port_device);
3054 module_init(edgeport_init);
3055 module_exit(edgeport_exit);
3057 /* Module information */
3058 MODULE_AUTHOR( DRIVER_AUTHOR );
3059 MODULE_DESCRIPTION( DRIVER_DESC );
3060 MODULE_LICENSE("GPL");
3062 module_param(debug, bool, S_IRUGO | S_IWUSR);
3063 MODULE_PARM_DESC(debug, "Debug enabled or not");