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>
263 #ifdef CONFIG_USB_SERIAL_DEBUG
264 static int debug = 1;
269 #include "usb-serial.h"
271 #include "io_edgeport.h"
272 #include "io_ionsp.h" /* info for the iosp messages */
273 #include "io_16654.h" /* 16654 UART defines */
276 * Version Information
278 #define DRIVER_VERSION "v2.3"
279 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
280 #define DRIVER_DESC "Edgeport USB Serial Driver"
282 /* First, the latest boot code - for first generation edgeports */
283 #define IMAGE_ARRAY_NAME BootCodeImage_GEN1
284 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1
285 #include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */
287 /* for second generation edgeports */
288 #define IMAGE_ARRAY_NAME BootCodeImage_GEN2
289 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2
290 #include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */
292 /* Then finally the main run-time operational code - for first generation edgeports */
293 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1
294 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1
295 #include "io_fw_down.h" /* Define array OperationalCodeImage[] */
297 /* for second generation edgeports */
298 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2
299 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2
300 #include "io_fw_down2.h" /* Define array OperationalCodeImage[] */
303 #define MAX_NAME_LEN 64
306 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
307 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
308 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
311 #define SERIAL_MAGIC 0x6702
313 #define PORT_MAGIC 0x7301
316 /* receive port state */
318 EXPECT_HDR1 = 0, /* Expect header byte 1 */
319 EXPECT_HDR2 = 1, /* Expect header byte 2 */
320 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
321 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
326 * This Transmit queue is an extension of the edgeport Rx buffer.
327 * The maximum amount of data buffered in both the edgeport
328 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
331 unsigned int head; /* index to head pointer (write) */
332 unsigned int tail; /* index to tail pointer (read) */
333 unsigned int count; /* Bytes in queue */
334 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
335 unsigned char *fifo; /* allocated Buffer */
338 /* This structure holds all of the local port information */
339 struct edgeport_port {
340 __u16 txCredits; /* our current credits for this port */
341 __u16 maxTxCredits; /* the max size of the port */
343 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
344 struct urb *write_urb; /* write URB for this port */
345 char write_in_progress; /* TRUE while a write URB is outstanding */
347 __u8 shadowLCR; /* last LCR value received */
348 __u8 shadowMCR; /* last MCR value received */
349 __u8 shadowMSR; /* last MSR value received */
350 __u8 shadowLSR; /* last LSR value received */
351 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
352 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
360 char chaseResponsePending;
362 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
363 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
364 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
365 wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
367 struct async_icount icount;
368 struct usb_serial_port *port; /* loop back to the owner of this object */
372 /* This structure holds all of the individual device information */
373 struct edgeport_serial {
374 char name[MAX_NAME_LEN+1]; /* string name of this device */
376 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
377 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
378 struct edgeport_product_info product_info; /* Product Info */
380 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
381 unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
382 struct urb * interrupt_read_urb; /* our interrupt urb */
384 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
385 unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
386 struct urb * read_urb; /* our bulk read urb */
388 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
390 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
392 enum RXSTATE rxState; /* the current state of the bulk receive processor */
393 __u8 rxHeader1; /* receive header byte 1 */
394 __u8 rxHeader2; /* receive header byte 2 */
395 __u8 rxHeader3; /* receive header byte 3 */
396 __u8 rxPort; /* the port that we are currently receiving data for */
397 __u8 rxStatusCode; /* the receive status code */
398 __u8 rxStatusParam; /* the receive status paramater */
399 __s16 rxBytesRemaining; /* the number of port bytes left to read */
400 struct usb_serial *serial; /* loop back to the owner of this object */
403 /* baud rate information */
404 struct divisor_table_entry {
410 // Define table of divisors for Rev A EdgePort/4 hardware
411 // These assume a 3.6864MHz crystal, the standard /16, and
414 static struct divisor_table_entry divisor_table[] = {
417 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
418 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
436 /* local variables */
437 static int CmdUrbs = 0; /* Number of outstanding Command Write Urbs */
440 /* local function prototypes */
442 /* function prototypes for all URB callbacks */
443 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs);
444 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs);
445 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs);
446 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs);
448 /* function prototypes for the usbserial callbacks */
449 static int edge_open (struct usb_serial_port *port, struct file *filp);
450 static void edge_close (struct usb_serial_port *port, struct file *filp);
451 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
452 static int edge_write_room (struct usb_serial_port *port);
453 static int edge_chars_in_buffer (struct usb_serial_port *port);
454 static void edge_throttle (struct usb_serial_port *port);
455 static void edge_unthrottle (struct usb_serial_port *port);
456 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
457 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
458 static void edge_break (struct usb_serial_port *port, int break_state);
459 static int edge_tiocmget (struct usb_serial_port *port, struct file *file);
460 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
461 static int edge_startup (struct usb_serial *serial);
462 static void edge_shutdown (struct usb_serial *serial);
465 #include "io_tables.h" /* all of the devices that this driver supports */
467 static struct usb_driver io_driver = {
468 .owner = THIS_MODULE,
469 .name = "io_edgeport",
470 .probe = usb_serial_probe,
471 .disconnect = usb_serial_disconnect,
472 .id_table = id_table_combined,
475 /* function prototypes for all of our local functions */
476 static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength);
477 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3);
478 static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr);
479 static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
480 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param);
481 static int calc_baud_rate_divisor (int baud_rate, int *divisor);
482 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate);
483 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios);
484 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
485 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
486 static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
488 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
489 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
490 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
491 static void get_manufacturing_desc (struct edgeport_serial *edge_serial);
492 static void get_boot_desc (struct edgeport_serial *edge_serial);
493 static void load_application_firmware (struct edgeport_serial *edge_serial);
496 static void unicode_to_ascii (char *string, short *unicode, int unicode_size);
502 // ************************************************************************
503 // ************************************************************************
504 // ************************************************************************
505 // ************************************************************************
507 /************************************************************************
509 * update_edgeport_E2PROM() Compare current versions of *
510 * Boot ROM and Manufacture *
511 * Descriptors with versions *
512 * embedded in this driver *
514 ************************************************************************/
515 static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial)
519 __u8 BootMajorVersion;
520 __u8 BootMinorVersion;
521 __u16 BootBuildNumber;
524 struct edge_firmware_image_record *record;
525 unsigned char *firmware;
529 switch (edge_serial->product_info.iDownloadFile) {
530 case EDGE_DOWNLOAD_FILE_I930:
531 BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion;
532 BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion;
533 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber);
534 BootImage = &BootCodeImage_GEN1[0];
535 BootSize = sizeof( BootCodeImage_GEN1 );
538 case EDGE_DOWNLOAD_FILE_80251:
539 BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion;
540 BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion;
541 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber);
542 BootImage = &BootCodeImage_GEN2[0];
543 BootSize = sizeof( BootCodeImage_GEN2 );
550 // Check Boot Image Version
551 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
552 (edge_serial->boot_descriptor.MinorVersion << 16) +
553 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
555 BootNewVer = (BootMajorVersion << 24) +
556 (BootMinorVersion << 16) +
557 le16_to_cpu(BootBuildNumber);
559 dbg("Current Boot Image version %d.%d.%d",
560 edge_serial->boot_descriptor.MajorVersion,
561 edge_serial->boot_descriptor.MinorVersion,
562 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
565 if (BootNewVer > BootCurVer) {
566 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
567 edge_serial->boot_descriptor.MajorVersion,
568 edge_serial->boot_descriptor.MinorVersion,
569 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
572 le16_to_cpu(BootBuildNumber));
575 dbg("Downloading new Boot Image");
577 firmware = BootImage;
580 record = (struct edge_firmware_image_record *)firmware;
581 response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
583 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));
586 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
587 if (firmware >= &BootImage[BootSize]) {
592 dbg("Boot Image -- already up to date");
597 /************************************************************************
599 * Get string descriptor from device *
601 ************************************************************************/
602 static int get_string (struct usb_device *dev, int Id, char *string)
604 struct usb_string_descriptor StringDesc;
605 struct usb_string_descriptor *pStringDesc;
607 dbg("%s - USB String ID = %d", __FUNCTION__, Id );
609 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
613 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
619 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
624 unicode_to_ascii(string, pStringDesc->wData, pStringDesc->bLength/2-1);
627 return strlen(string);
632 /************************************************************************
634 * Get string descriptor from device
636 ************************************************************************/
637 static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc)
639 struct usb_string_descriptor StringDesc;
640 struct usb_string_descriptor *pStringDesc;
642 dbg("%s - USB String ID = %d", __FUNCTION__, Id );
644 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
648 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
654 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
659 *pRetDesc = pStringDesc;
664 static void get_product_info(struct edgeport_serial *edge_serial)
666 struct edgeport_product_info *product_info = &edge_serial->product_info;
668 memset (product_info, 0, sizeof(struct edgeport_product_info));
670 product_info->ProductId = (__u16)(edge_serial->serial->dev->descriptor.idProduct & ~ION_DEVICE_ID_GENERATION_2);
671 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
672 product_info->ProdInfoVer = 0;
674 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
675 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
676 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
677 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
679 product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion;
680 product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion;
681 product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber;
683 memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate));
685 // check if this is 2nd generation hardware
686 if (edge_serial->serial->dev->descriptor.idProduct & ION_DEVICE_ID_GENERATION_2) {
687 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion;
688 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion;
689 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber);
690 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
692 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion;
693 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion;
694 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber);
695 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
698 // Determine Product type and set appropriate flags
699 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
700 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
701 case ION_DEVICE_ID_EDGEPORT_4T:
702 case ION_DEVICE_ID_EDGEPORT_4:
703 case ION_DEVICE_ID_EDGEPORT_2:
704 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
705 case ION_DEVICE_ID_EDGEPORT_8:
706 case ION_DEVICE_ID_EDGEPORT_421:
707 case ION_DEVICE_ID_EDGEPORT_21:
708 case ION_DEVICE_ID_EDGEPORT_2_DIN:
709 case ION_DEVICE_ID_EDGEPORT_4_DIN:
710 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
711 product_info->IsRS232 = 1;
714 case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485
715 product_info->IsRS422 = 1;
716 product_info->IsRS485 = 1;
719 case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422
720 case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422
721 product_info->IsRS422 = 1;
725 // Dump Product Info structure
726 dbg("**Product Information:");
727 dbg(" ProductId %x", product_info->ProductId );
728 dbg(" NumPorts %d", product_info->NumPorts );
729 dbg(" ProdInfoVer %d", product_info->ProdInfoVer );
730 dbg(" IsServer %d", product_info->IsServer);
731 dbg(" IsRS232 %d", product_info->IsRS232 );
732 dbg(" IsRS422 %d", product_info->IsRS422 );
733 dbg(" IsRS485 %d", product_info->IsRS485 );
734 dbg(" RomSize %d", product_info->RomSize );
735 dbg(" RamSize %d", product_info->RamSize );
736 dbg(" CpuRev %x", product_info->CpuRev );
737 dbg(" BoardRev %x", product_info->BoardRev);
738 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
739 product_info->BootMinorVersion,
740 le16_to_cpu(product_info->BootBuildNumber));
741 dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion,
742 product_info->FirmwareMinorVersion,
743 le16_to_cpu(product_info->FirmwareBuildNumber));
744 dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0],
745 product_info->ManufactureDescDate[1],
746 product_info->ManufactureDescDate[2]+1900);
747 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
752 /************************************************************************/
753 /************************************************************************/
754 /* U S B C A L L B A C K F U N C T I O N S */
755 /* U S B C A L L B A C K F U N C T I O N S */
756 /************************************************************************/
757 /************************************************************************/
759 /*****************************************************************************
760 * edge_interrupt_callback
761 * this is the callback function for when we have received data on the
762 * interrupt endpoint.
763 *****************************************************************************/
764 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs)
766 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
767 struct edgeport_port *edge_port;
768 struct usb_serial_port *port;
769 unsigned char *data = urb->transfer_buffer;
770 int length = urb->actual_length;
777 dbg("%s", __FUNCTION__);
779 switch (urb->status) {
786 /* this urb is terminated, clean up */
787 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
790 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
794 // process this interrupt-read even if there are no ports open
796 usb_serial_debug_data (__FILE__, __FUNCTION__, length, data);
799 bytes_avail = data[0] | (data[1] << 8);
801 edge_serial->rxBytesAvail += bytes_avail;
802 dbg("%s - bytes_avail = %d, rxBytesAvail %d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail);
804 if ((edge_serial->rxBytesAvail > 0) &&
805 (edge_serial->read_urb->status != -EINPROGRESS)) {
806 dbg(" --- Posting a read");
808 /* we have pending bytes on the bulk in pipe, send a request */
809 edge_serial->read_urb->dev = edge_serial->serial->dev;
810 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
812 dbg("%s - usb_submit_urb(read bulk) failed with result = %d", __FUNCTION__, result);
817 /* grab the txcredits for the ports if available */
820 while ((position < length) && (portNumber < edge_serial->serial->num_ports)) {
821 txCredits = data[position] | (data[position+1] << 8);
823 port = edge_serial->serial->port[portNumber];
824 edge_port = usb_get_serial_port_data(port);
825 if (edge_port->open) {
826 edge_port->txCredits += txCredits;
827 dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);
829 /* tell the tty driver that something has changed */
830 if (edge_port->port->tty)
831 wake_up_interruptible(&edge_port->port->tty->write_wait);
833 // Since we have more credit, check if more data can be sent
834 send_more_port_data(edge_serial, edge_port);
843 result = usb_submit_urb (urb, GFP_ATOMIC);
845 dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result);
850 /*****************************************************************************
851 * edge_bulk_in_callback
852 * this is the callback function for when we have received data on the
854 *****************************************************************************/
855 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
857 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
858 unsigned char *data = urb->transfer_buffer;
860 __u16 raw_data_length;
862 dbg("%s", __FUNCTION__);
865 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
869 if (urb->actual_length) {
870 raw_data_length = urb->actual_length;
872 usb_serial_debug_data (__FILE__, __FUNCTION__, raw_data_length, data);
874 /* decrement our rxBytes available by the number that we just got */
875 edge_serial->rxBytesAvail -= raw_data_length;
877 dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail);
879 process_rcvd_data (edge_serial, data, urb->actual_length);
881 /* check to see if there's any more data for us to read */
882 if ((edge_serial->rxBytesAvail > 0) &&
883 (edge_serial->read_urb->status != -EINPROGRESS)) {
884 dbg(" --- Posting a read");
886 /* there is, so resubmit our urb */
887 edge_serial->read_urb->dev = edge_serial->serial->dev;
888 status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
890 dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status);
897 /*****************************************************************************
898 * edge_bulk_out_data_callback
899 * this is the callback function for when we have finished sending serial data
900 * on the bulk out endpoint.
901 *****************************************************************************/
902 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs)
904 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
905 struct tty_struct *tty;
907 dbg("%s", __FUNCTION__);
910 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
913 tty = edge_port->port->tty;
915 if (tty && edge_port->open) {
916 /* let the tty driver wakeup if it has a special write_wakeup function */
917 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) {
918 (tty->ldisc.write_wakeup)(tty);
921 /* tell the tty driver that something has changed */
922 wake_up_interruptible(&tty->write_wait);
925 // Release the Write URB
926 edge_port->write_in_progress = FALSE;
928 // Check if more data needs to be sent
929 send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port);
933 /*****************************************************************************
935 * this is the callback function for when we have finished sending a command
936 * on the bulk out endpoint.
937 *****************************************************************************/
938 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs)
940 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
941 struct tty_struct *tty;
942 int status = urb->status;
944 dbg("%s", __FUNCTION__);
947 dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
950 /* clean up the transfer buffer */
951 if (urb->transfer_buffer != NULL) {
952 kfree(urb->transfer_buffer);
955 /* Free the command urb */
959 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status);
963 /* Get pointer to tty */
964 tty = edge_port->port->tty;
966 /* tell the tty driver that something has changed */
967 if (tty && edge_port->open)
968 wake_up_interruptible(&tty->write_wait);
970 /* we have completed the command */
971 edge_port->commandPending = FALSE;
972 wake_up_interruptible(&edge_port->wait_command);
976 /*****************************************************************************
977 * Driver tty interface functions
978 *****************************************************************************/
980 /*****************************************************************************
982 * this function is called by the tty driver when a port is opened
983 * If successful, we return 0
984 * Otherwise we return a negative error number.
985 *****************************************************************************/
986 static int edge_open (struct usb_serial_port *port, struct file * filp)
988 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
989 struct usb_serial *serial;
990 struct edgeport_serial *edge_serial;
994 dbg("%s - port %d", __FUNCTION__, port->number);
996 if (edge_port == NULL)
999 /* force low_latency on so that our tty_push actually forces the data through,
1000 otherwise it is scheduled, and with high data rates (like with OHCI) data
1003 port->tty->low_latency = 1;
1005 /* see if we've set up our endpoint info yet (can't set it up in edge_startup
1006 as the structures were not set up at that time.) */
1007 serial = port->serial;
1008 edge_serial = usb_get_serial_data(serial);
1009 if (edge_serial == NULL) {
1012 if (edge_serial->interrupt_in_buffer == NULL) {
1013 struct usb_serial_port *port0 = serial->port[0];
1015 /* not set up yet, so do it now */
1016 edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer;
1017 edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress;
1018 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
1019 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
1020 edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress;
1021 edge_serial->read_urb = port0->read_urb;
1022 edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress;
1024 /* set up our interrupt urb */
1025 usb_fill_int_urb(edge_serial->interrupt_read_urb,
1027 usb_rcvintpipe(serial->dev,
1028 port0->interrupt_in_endpointAddress),
1029 port0->interrupt_in_buffer,
1030 edge_serial->interrupt_read_urb->transfer_buffer_length,
1031 edge_interrupt_callback, edge_serial,
1032 edge_serial->interrupt_read_urb->interval);
1034 /* set up our bulk in urb */
1035 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
1036 usb_rcvbulkpipe(serial->dev,
1037 port0->bulk_in_endpointAddress),
1038 port0->bulk_in_buffer,
1039 edge_serial->read_urb->transfer_buffer_length,
1040 edge_bulk_in_callback, edge_serial);
1042 /* start interrupt read for this edgeport
1043 * this interrupt will continue as long as the edgeport is connected */
1044 response = usb_submit_urb (edge_serial->interrupt_read_urb, GFP_KERNEL);
1046 dev_err(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, response);
1050 /* initialize our wait queues */
1051 init_waitqueue_head(&edge_port->wait_open);
1052 init_waitqueue_head(&edge_port->wait_chase);
1053 init_waitqueue_head(&edge_port->delta_msr_wait);
1054 init_waitqueue_head(&edge_port->wait_command);
1056 /* initialize our icount structure */
1057 memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1059 /* initialize our port settings */
1060 edge_port->txCredits = 0; /* Can't send any data yet */
1061 edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */
1062 edge_port->chaseResponsePending = FALSE;
1064 /* send a open port command */
1065 edge_port->openPending = TRUE;
1066 edge_port->open = FALSE;
1067 response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0);
1070 dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__);
1071 edge_port->openPending = FALSE;
1075 /* now wait for the port to be completely opened */
1076 timeout = OPEN_TIMEOUT;
1077 while (timeout && edge_port->openPending == TRUE) {
1078 timeout = interruptible_sleep_on_timeout (&edge_port->wait_open, timeout);
1081 if (edge_port->open == FALSE) {
1082 /* open timed out */
1083 dbg("%s - open timedout", __FUNCTION__);
1084 edge_port->openPending = FALSE;
1088 /* create the txfifo */
1089 edge_port->txfifo.head = 0;
1090 edge_port->txfifo.tail = 0;
1091 edge_port->txfifo.count = 0;
1092 edge_port->txfifo.size = edge_port->maxTxCredits;
1093 edge_port->txfifo.fifo = kmalloc (edge_port->maxTxCredits, GFP_KERNEL);
1095 if (!edge_port->txfifo.fifo) {
1096 dbg("%s - no memory", __FUNCTION__);
1097 edge_close (port, filp);
1101 /* Allocate a URB for the write */
1102 edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL);
1104 if (!edge_port->write_urb) {
1105 dbg("%s - no memory", __FUNCTION__);
1106 edge_close (port, filp);
1110 dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits);
1112 dbg("%s exited", __FUNCTION__);
1118 /************************************************************************
1120 * block_until_chase_response
1122 * This function will block the close until one of the following:
1123 * 1. Response to our Chase comes from Edgeport
1124 * 2. A timout of 10 seconds without activity has expired
1125 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
1127 ************************************************************************/
1128 static void block_until_chase_response(struct edgeport_port *edge_port)
1135 // Save Last credits
1136 lastCredits = edge_port->txCredits;
1138 // Did we get our Chase response
1139 if (edge_port->chaseResponsePending == FALSE) {
1140 dbg("%s - Got Chase Response", __FUNCTION__);
1142 // did we get all of our credit back?
1143 if (edge_port->txCredits == edge_port->maxTxCredits ) {
1144 dbg("%s - Got all credits", __FUNCTION__);
1149 // Block the thread for a while
1150 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1152 if (lastCredits == edge_port->txCredits) {
1153 // No activity.. count down.
1156 edge_port->chaseResponsePending = FALSE;
1157 dbg("%s - Chase TIMEOUT", __FUNCTION__);
1161 // Reset timout value back to 10 seconds
1162 dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits);
1169 /************************************************************************
1171 * block_until_tx_empty
1173 * This function will block the close until one of the following:
1175 * 2. The edgeport has stopped
1176 * 3. A timout of 3 seconds without activity has expired
1178 ************************************************************************/
1179 static void block_until_tx_empty (struct edgeport_port *edge_port)
1181 struct TxFifo *fifo = &edge_port->txfifo;
1183 int timeout = HZ/10;
1188 lastCount = fifo->count;
1190 // Is the Edgeport Buffer empty?
1191 if (lastCount == 0) {
1192 dbg("%s - TX Buffer Empty", __FUNCTION__);
1196 // Block the thread for a while
1197 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1199 dbg("%s wait", __FUNCTION__);
1201 if (lastCount == fifo->count) {
1202 // No activity.. count down.
1205 dbg("%s - TIMEOUT", __FUNCTION__);
1209 // Reset timout value back to seconds
1216 /*****************************************************************************
1218 * this function is called by the tty driver when a port is closed
1219 *****************************************************************************/
1220 static void edge_close (struct usb_serial_port *port, struct file * filp)
1222 struct edgeport_serial *edge_serial;
1223 struct edgeport_port *edge_port;
1226 dbg("%s - port %d", __FUNCTION__, port->number);
1228 edge_serial = usb_get_serial_data(port->serial);
1229 edge_port = usb_get_serial_port_data(port);
1230 if ((edge_serial == NULL) || (edge_port == NULL))
1233 // block until tx is empty
1234 block_until_tx_empty(edge_port);
1236 edge_port->closePending = TRUE;
1238 /* flush and chase */
1239 edge_port->chaseResponsePending = TRUE;
1241 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1242 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1244 // block until chase finished
1245 block_until_chase_response(edge_port);
1247 edge_port->chaseResponsePending = FALSE;
1250 /* close the port */
1251 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
1252 send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
1254 //port->close = TRUE;
1255 edge_port->closePending = FALSE;
1256 edge_port->open = FALSE;
1257 edge_port->openPending = FALSE;
1259 if (edge_port->write_urb) {
1260 usb_unlink_urb (edge_port->write_urb);
1263 if (edge_port->write_urb) {
1264 /* if this urb had a transfer buffer already (old transfer) free it */
1265 if (edge_port->write_urb->transfer_buffer != NULL) {
1266 kfree(edge_port->write_urb->transfer_buffer);
1268 usb_free_urb (edge_port->write_urb);
1270 if (edge_port->txfifo.fifo) {
1271 kfree(edge_port->txfifo.fifo);
1274 dbg("%s exited", __FUNCTION__);
1277 /*****************************************************************************
1279 * this function is called by the tty driver when data should be written to
1281 * If successful, we return the number of bytes written, otherwise we return
1282 * a negative error number.
1283 *****************************************************************************/
1284 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
1286 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1287 struct TxFifo *fifo;
1293 dbg("%s - port %d", __FUNCTION__, port->number);
1295 if (edge_port == NULL)
1298 // get a pointer to the Tx fifo
1299 fifo = &edge_port->txfifo;
1301 // calculate number of bytes to put in fifo
1302 copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));
1304 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__,
1305 port->number, count, edge_port->txCredits - fifo->count, copySize);
1307 /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
1308 if (copySize == 0) {
1309 dbg("%s - copySize = Zero", __FUNCTION__);
1314 // since we can never overflow the buffer we do not have to check for full condition
1316 // the copy is done is two parts -- first fill to the end of the buffer
1317 // then copy the reset from the start of the buffer
1319 bytesleft = fifo->size - fifo->head;
1320 firsthalf = min (bytesleft, copySize);
1321 dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft);
1323 /* now copy our data */
1325 if (copy_from_user(&fifo->fifo[fifo->head], data, firsthalf))
1328 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1330 usb_serial_debug_data (__FILE__, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]);
1332 // update the index and size
1333 fifo->head += firsthalf;
1334 fifo->count += firsthalf;
1337 if (fifo->head == fifo->size) {
1341 secondhalf = copySize-firsthalf;
1344 dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf);
1346 if (copy_from_user(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf))
1349 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1351 usb_serial_debug_data (__FILE__, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]);
1352 // update the index and size
1353 fifo->count += secondhalf;
1354 fifo->head += secondhalf;
1355 // No need to check for wrap since we can not get to end of fifo in this part
1358 send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port);
1360 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count);
1366 /************************************************************************
1368 * send_more_port_data()
1370 * This routine attempts to write additional UART transmit data
1371 * to a port over the USB bulk pipe. It is called (1) when new
1372 * data has been written to a port's TxBuffer from higher layers
1373 * (2) when the peripheral sends us additional TxCredits indicating
1374 * that it can accept more Tx data for a given port; and (3) when
1375 * a bulk write completes successfully and we want to see if we
1376 * can transmit more.
1378 ************************************************************************/
1379 static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port)
1381 struct TxFifo *fifo = &edge_port->txfifo;
1383 unsigned char *buffer;
1390 dbg("%s(%d)", __FUNCTION__, edge_port->port->number);
1392 if (edge_port->write_in_progress ||
1394 (fifo->count == 0)) {
1395 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress);
1399 // since the amount of data in the fifo will always fit into the
1400 // edgeport buffer we do not need to check the write length
1402 // Do we have enough credits for this port to make it worthwhile
1403 // to bother queueing a write. If it's too small, say a few bytes,
1404 // it's better to wait for more credits so we can do a larger
1406 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits)) {
1407 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits );
1412 edge_port->write_in_progress = TRUE;
1414 // get a pointer to the write_urb
1415 urb = edge_port->write_urb;
1417 /* if this urb had a transfer buffer already (old transfer) free it */
1418 if (urb->transfer_buffer != NULL) {
1419 kfree(urb->transfer_buffer);
1420 urb->transfer_buffer = NULL;
1423 /* build the data header for the buffer and port that we are about to send out */
1424 count = fifo->count;
1425 buffer = kmalloc (count+2, GFP_ATOMIC);
1426 if (buffer == NULL) {
1427 dev_err(&edge_serial->serial->dev->dev, "%s - no more kernel memory...\n", __FUNCTION__);
1428 edge_port->write_in_progress = FALSE;
1431 buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
1432 buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count);
1434 /* now copy our data */
1435 bytesleft = fifo->size - fifo->tail;
1436 firsthalf = min (bytesleft, count);
1437 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1438 fifo->tail += firsthalf;
1439 fifo->count -= firsthalf;
1440 if (fifo->tail == fifo->size) {
1444 secondhalf = count-firsthalf;
1446 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf);
1447 fifo->tail += secondhalf;
1448 fifo->count -= secondhalf;
1452 usb_serial_debug_data (__FILE__, __FUNCTION__, count, &buffer[2]);
1455 /* fill up the urb with all of our data and submit it */
1456 usb_fill_bulk_urb (urb, edge_serial->serial->dev,
1457 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
1458 buffer, count+2, edge_bulk_out_data_callback, edge_port);
1460 /* decrement the number of credits we have by the number we just sent */
1461 edge_port->txCredits -= count;
1462 edge_port->icount.tx += count;
1464 urb->dev = edge_serial->serial->dev;
1465 status = usb_submit_urb(urb, GFP_ATOMIC);
1467 /* something went wrong */
1468 dbg("%s - usb_submit_urb(write bulk) failed", __FUNCTION__);
1469 edge_port->write_in_progress = FALSE;
1471 /* revert the credits as something bad happened. */
1472 edge_port->txCredits += count;
1473 edge_port->icount.tx -= count;
1475 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count);
1479 /*****************************************************************************
1481 * this function is called by the tty driver when it wants to know how many
1482 * bytes of data we can accept for a specific port.
1483 * If successful, we return the amount of room that we have for this port
1485 * Otherwise we return a negative error number.
1486 *****************************************************************************/
1487 static int edge_write_room (struct usb_serial_port *port)
1489 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1492 dbg("%s", __FUNCTION__);
1494 if (edge_port == NULL)
1496 if (edge_port->closePending == TRUE)
1499 dbg("%s - port %d", __FUNCTION__, port->number);
1501 if (!edge_port->open) {
1502 dbg("%s - port not opened", __FUNCTION__);
1506 // total of both buffers is still txCredit
1507 room = edge_port->txCredits - edge_port->txfifo.count;
1509 dbg("%s - returns %d", __FUNCTION__, room);
1514 /*****************************************************************************
1515 * edge_chars_in_buffer
1516 * this function is called by the tty driver when it wants to know how many
1517 * bytes of data we currently have outstanding in the port (data that has
1518 * been written, but hasn't made it out the port yet)
1519 * If successful, we return the number of bytes left to be written in the
1521 * Otherwise we return a negative error number.
1522 *****************************************************************************/
1523 static int edge_chars_in_buffer (struct usb_serial_port *port)
1525 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1528 dbg("%s", __FUNCTION__);
1530 if (edge_port == NULL)
1532 if (edge_port->closePending == TRUE)
1535 if (!edge_port->open) {
1536 dbg("%s - port not opened", __FUNCTION__);
1540 num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;
1542 dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars);
1549 /*****************************************************************************
1551 * this function is called by the tty driver when it wants to stop the data
1552 * being read from the port.
1553 *****************************************************************************/
1554 static void edge_throttle (struct usb_serial_port *port)
1556 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1557 struct tty_struct *tty;
1560 dbg("%s - port %d", __FUNCTION__, port->number);
1562 if (edge_port == NULL)
1565 if (!edge_port->open) {
1566 dbg("%s - port not opened", __FUNCTION__);
1572 dbg ("%s - no tty available", __FUNCTION__);
1576 /* if we are implementing XON/XOFF, send the stop character */
1578 unsigned char stop_char = STOP_CHAR(tty);
1579 status = edge_write (port, 0, &stop_char, 1);
1585 /* if we are implementing RTS/CTS, toggle that line */
1586 if (tty->termios->c_cflag & CRTSCTS) {
1587 edge_port->shadowMCR &= ~MCR_RTS;
1588 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1598 /*****************************************************************************
1600 * this function is called by the tty driver when it wants to resume the data
1601 * being read from the port (called after SerialThrottle is called)
1602 *****************************************************************************/
1603 static void edge_unthrottle (struct usb_serial_port *port)
1605 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1606 struct tty_struct *tty;
1609 dbg("%s - port %d", __FUNCTION__, port->number);
1611 if (edge_port == NULL)
1614 if (!edge_port->open) {
1615 dbg("%s - port not opened", __FUNCTION__);
1621 dbg ("%s - no tty available", __FUNCTION__);
1625 /* if we are implementing XON/XOFF, send the start character */
1627 unsigned char start_char = START_CHAR(tty);
1628 status = edge_write (port, 0, &start_char, 1);
1634 /* if we are implementing RTS/CTS, toggle that line */
1635 if (tty->termios->c_cflag & CRTSCTS) {
1636 edge_port->shadowMCR |= MCR_RTS;
1637 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1647 /*****************************************************************************
1649 * this function is called by the tty driver when it wants to change the termios structure
1650 *****************************************************************************/
1651 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1653 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1654 struct tty_struct *tty = port->tty;
1657 if (!port->tty || !port->tty->termios) {
1658 dbg ("%s - no tty or termios", __FUNCTION__);
1662 cflag = tty->termios->c_cflag;
1663 /* check that they really want us to change something */
1665 if ((cflag == old_termios->c_cflag) &&
1666 (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1667 dbg("%s - nothing to change", __FUNCTION__);
1672 dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
1673 tty->termios->c_cflag,
1674 RELEVANT_IFLAG(tty->termios->c_iflag));
1676 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
1677 old_termios->c_cflag,
1678 RELEVANT_IFLAG(old_termios->c_iflag));
1681 dbg("%s - port %d", __FUNCTION__, port->number);
1683 if (edge_port == NULL)
1686 if (!edge_port->open) {
1687 dbg("%s - port not opened", __FUNCTION__);
1691 /* change the port settings to the new ones specified */
1692 change_port_settings (edge_port, old_termios);
1698 /*****************************************************************************
1699 * get_lsr_info - get line status register info
1701 * Purpose: Let user call ioctl() to get info when the UART physically
1702 * is emptied. On bus types like RS485, the transmitter must
1703 * release the bus after transmitting. This must be done when
1704 * the transmit shift register is empty, not be done when the
1705 * transmit holding register is empty. This functionality
1706 * allows an RS485 driver to be written in user space.
1707 *****************************************************************************/
1708 static int get_lsr_info(struct edgeport_port *edge_port, unsigned int *value)
1710 unsigned int result = 0;
1712 if (edge_port->maxTxCredits == edge_port->txCredits &&
1713 edge_port->txfifo.count == 0) {
1714 dbg("%s -- Empty", __FUNCTION__);
1715 result = TIOCSER_TEMT;
1718 if (copy_to_user(value, &result, sizeof(int)))
1723 static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int *value)
1725 unsigned int result = 0;
1726 struct tty_struct *tty = edge_port->port->tty;
1729 return -ENOIOCTLCMD;
1731 result = tty->read_cnt;
1733 dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result);
1734 if (copy_to_user(value, &result, sizeof(int)))
1737 return -ENOIOCTLCMD;
1740 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
1742 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1745 dbg("%s - port %d", __FUNCTION__, port->number);
1747 mcr = edge_port->shadowMCR;
1748 if (set & TIOCM_RTS)
1750 if (set & TIOCM_DTR)
1752 if (set & TIOCM_LOOP)
1753 mcr |= MCR_LOOPBACK;
1755 if (clear & TIOCM_RTS)
1757 if (clear & TIOCM_DTR)
1759 if (clear & TIOCM_LOOP)
1760 mcr &= ~MCR_LOOPBACK;
1762 edge_port->shadowMCR = mcr;
1764 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1769 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
1771 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1772 unsigned int result = 0;
1776 dbg("%s - port %d", __FUNCTION__, port->number);
1778 msr = edge_port->shadowMSR;
1779 mcr = edge_port->shadowMCR;
1780 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1781 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1782 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1783 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1784 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1785 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1788 dbg("%s -- %x", __FUNCTION__, result);
1793 static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct * retinfo)
1795 struct serial_struct tmp;
1800 memset(&tmp, 0, sizeof(tmp));
1802 tmp.type = PORT_16550A;
1803 tmp.line = edge_port->port->serial->minor;
1804 tmp.port = edge_port->port->number;
1806 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1807 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1808 tmp.baud_base = 9600;
1809 tmp.close_delay = 5*HZ;
1810 tmp.closing_wait = 30*HZ;
1811 // tmp.custom_divisor = state->custom_divisor;
1812 // tmp.hub6 = state->hub6;
1813 // tmp.io_type = state->io_type;
1816 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1823 /*****************************************************************************
1825 * this function handles any ioctl calls to the driver
1826 *****************************************************************************/
1827 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
1829 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1830 struct async_icount cnow;
1831 struct async_icount cprev;
1832 struct serial_icounter_struct icount;
1835 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
1838 // return number of bytes available
1840 dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
1841 return get_number_bytes_avail(edge_port, (unsigned int *) arg);
1845 dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
1846 return get_lsr_info(edge_port, (unsigned int *) arg);
1850 dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number);
1851 return get_serial_info(edge_port, (struct serial_struct *) arg);
1854 dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number);
1858 dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
1859 cprev = edge_port->icount;
1861 interruptible_sleep_on(&edge_port->delta_msr_wait);
1862 /* see if a signal did it */
1863 if (signal_pending(current))
1864 return -ERESTARTSYS;
1865 cnow = edge_port->icount;
1866 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1867 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1868 return -EIO; /* no change => error */
1869 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1870 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1871 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
1872 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
1881 cnow = edge_port->icount;
1882 memset(&icount, 0, sizeof(icount));
1883 icount.cts = cnow.cts;
1884 icount.dsr = cnow.dsr;
1885 icount.rng = cnow.rng;
1886 icount.dcd = cnow.dcd;
1887 icount.rx = cnow.rx;
1888 icount.tx = cnow.tx;
1889 icount.frame = cnow.frame;
1890 icount.overrun = cnow.overrun;
1891 icount.parity = cnow.parity;
1892 icount.brk = cnow.brk;
1893 icount.buf_overrun = cnow.buf_overrun;
1895 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx );
1896 if (copy_to_user((void *)arg, &icount, sizeof(icount)))
1901 return -ENOIOCTLCMD;
1905 /*****************************************************************************
1907 * this function sends a break to the port
1908 *****************************************************************************/
1909 static void edge_break (struct usb_serial_port *port, int break_state)
1911 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1914 /* flush and chase */
1915 edge_port->chaseResponsePending = TRUE;
1917 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1918 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1920 // block until chase finished
1921 block_until_chase_response(edge_port);
1923 edge_port->chaseResponsePending = FALSE;
1926 if (break_state == -1) {
1927 dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__);
1928 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
1930 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__);
1931 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
1934 dbg("%s - error sending break set/clear command.", __FUNCTION__);
1941 /*****************************************************************************
1943 * this function handles the data received on the bulk in pipe.
1944 *****************************************************************************/
1945 static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength)
1947 struct usb_serial_port *port;
1948 struct edgeport_port *edge_port;
1949 struct tty_struct *tty;
1950 __u16 lastBufferLength;
1954 dbg("%s", __FUNCTION__);
1956 lastBufferLength = bufferLength + 1;
1958 while (bufferLength > 0) {
1959 /* failsafe incase we get a message that we don't understand */
1960 if (lastBufferLength == bufferLength) {
1961 dbg("%s - stuck in loop, exiting it.", __FUNCTION__);
1964 lastBufferLength = bufferLength;
1966 switch (edge_serial->rxState) {
1968 edge_serial->rxHeader1 = *buffer;
1972 if (bufferLength == 0) {
1973 edge_serial->rxState = EXPECT_HDR2;
1976 /* otherwise, drop on through */
1979 edge_serial->rxHeader2 = *buffer;
1983 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2);
1985 // Process depending on whether this header is
1988 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1989 // Decode this status header and goto EXPECT_HDR1 (if we
1990 // can process the status with only 2 bytes), or goto
1991 // EXPECT_HDR3 to get the third byte.
1993 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1994 edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1);
1996 if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) {
1997 // This status needs additional bytes. Save what we have
1998 // and then wait for more data.
1999 edge_serial->rxStatusParam = edge_serial->rxHeader2;
2001 edge_serial->rxState = EXPECT_HDR3;
2005 // We have all the header bytes, process the status now
2006 process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0);
2008 edge_serial->rxState = EXPECT_HDR1;
2011 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
2012 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2);
2014 dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining);
2016 //ASSERT( DevExt->RxPort < DevExt->NumPorts );
2017 //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
2019 if (bufferLength == 0 ) {
2020 edge_serial->rxState = EXPECT_DATA;
2023 // Else, drop through
2026 case EXPECT_DATA: // Expect data
2028 if (bufferLength < edge_serial->rxBytesRemaining) {
2029 rxLen = bufferLength;
2030 edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer
2032 // BufLen >= RxBytesRemaining
2033 rxLen = edge_serial->rxBytesRemaining;
2034 edge_serial->rxState = EXPECT_HDR1; // Start another header next time
2037 bufferLength -= rxLen;
2038 edge_serial->rxBytesRemaining -= rxLen;
2040 /* spit this data back into the tty driver if this port is open */
2042 port = edge_serial->serial->port[edge_serial->rxPort];
2043 edge_port = usb_get_serial_port_data(port);
2044 if (edge_port->open) {
2045 tty = edge_port->port->tty;
2047 dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort);
2048 for (i = 0; i < rxLen ; ++i) {
2049 /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
2050 if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
2051 tty_flip_buffer_push(tty);
2053 /* this doesn't actually push the data through unless tty->low_latency is set */
2054 tty_insert_flip_char(tty, buffer[i], 0);
2056 tty_flip_buffer_push(tty);
2058 edge_port->icount.rx += rxLen;
2065 case EXPECT_HDR3: // Expect 3rd byte of status header
2066 edge_serial->rxHeader3 = *buffer;
2070 // We have all the header bytes, process the status now
2071 process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3);
2072 edge_serial->rxState = EXPECT_HDR1;
2082 /*****************************************************************************
2083 * process_rcvd_status
2084 * this function handles the any status messages received on the bulk in pipe.
2085 *****************************************************************************/
2086 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3)
2088 struct usb_serial_port *port;
2089 struct edgeport_port *edge_port;
2090 __u8 code = edge_serial->rxStatusCode;
2092 /* switch the port pointer to the one being currently talked about */
2093 port = edge_serial->serial->port[edge_serial->rxPort];
2094 edge_port = usb_get_serial_port_data(port);
2095 if (edge_port == NULL) {
2096 dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort);
2100 dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort);
2102 if (code == IOSP_EXT_STATUS) {
2104 case IOSP_EXT_STATUS_CHASE_RSP:
2105 // we want to do EXT status regardless of port open/closed
2106 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 );
2107 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call
2108 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
2109 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
2110 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
2111 // like wait longer in block_until_chase_response, but for now we don't.
2112 edge_port->chaseResponsePending = FALSE;
2113 wake_up_interruptible (&edge_port->wait_chase);
2116 case IOSP_EXT_STATUS_RX_CHECK_RSP:
2117 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 );
2118 //Port->RxCheckRsp = TRUE;
2123 if (code == IOSP_STATUS_OPEN_RSP) {
2124 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
2125 edge_port->maxTxCredits = edge_port->txCredits;
2126 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits);
2127 handle_new_msr (edge_port, byte2);
2129 /* send the current line settings to the port so we are in sync with any further termios calls */
2130 if (edge_port->port->tty)
2131 change_port_settings (edge_port, edge_port->port->tty->termios);
2133 /* we have completed the open */
2134 edge_port->openPending = FALSE;
2135 edge_port->open = TRUE;
2136 wake_up_interruptible(&edge_port->wait_open);
2140 // If port is closed, silently discard all rcvd status. We can
2141 // have cases where buffered status is received AFTER the close
2142 // port command is sent to the Edgeport.
2143 if ((!edge_port->open ) || (edge_port->closePending)) {
2148 // Not currently sent by Edgeport
2149 case IOSP_STATUS_LSR:
2150 dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2151 handle_new_lsr (edge_port, FALSE, byte2, 0);
2154 case IOSP_STATUS_LSR_DATA:
2155 dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2156 // byte2 is LSR Register
2157 // byte3 is broken data byte
2158 handle_new_lsr (edge_port, TRUE, byte2, byte3);
2161 // case IOSP_EXT_4_STATUS:
2162 // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2165 case IOSP_STATUS_MSR:
2166 dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2168 // Process this new modem status and generate appropriate
2169 // events, etc, based on the new status. This routine
2170 // also saves the MSR in Port->ShadowMsr.
2171 handle_new_msr(edge_port, byte2);
2175 dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code);
2183 /*****************************************************************************
2185 * this function handles any change to the msr register for a port.
2186 *****************************************************************************/
2187 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2189 struct async_icount *icount;
2191 dbg("%s %02x", __FUNCTION__, newMsr);
2193 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2194 icount = &edge_port->icount;
2196 /* update input line counters */
2197 if (newMsr & EDGEPORT_MSR_DELTA_CTS) {
2200 if (newMsr & EDGEPORT_MSR_DELTA_DSR) {
2203 if (newMsr & EDGEPORT_MSR_DELTA_CD) {
2206 if (newMsr & EDGEPORT_MSR_DELTA_RI) {
2209 wake_up_interruptible(&edge_port->delta_msr_wait);
2212 /* Save the new modem status */
2213 edge_port->shadowMSR = newMsr & 0xf0;
2219 /*****************************************************************************
2221 * this function handles any change to the lsr register for a port.
2222 *****************************************************************************/
2223 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data)
2225 __u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2226 struct async_icount *icount;
2228 dbg("%s - %02x", __FUNCTION__, newLsr);
2230 edge_port->shadowLSR = lsr;
2232 if (newLsr & LSR_BREAK) {
2234 // Parity and Framing errors only count if they
2235 // occur exclusive of a break being
2238 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2241 /* Place LSR data byte into Rx buffer */
2242 if (lsrData && edge_port->port->tty) {
2243 tty_insert_flip_char(edge_port->port->tty, data, 0);
2244 tty_flip_buffer_push(edge_port->port->tty);
2247 /* update input line counters */
2248 icount = &edge_port->icount;
2249 if (newLsr & LSR_BREAK) {
2252 if (newLsr & LSR_OVER_ERR) {
2255 if (newLsr & LSR_PAR_ERR) {
2258 if (newLsr & LSR_FRM_ERR) {
2266 /****************************************************************************
2268 * writes a number of bytes to the Edgeport device's sram starting at the
2270 * If successful returns the number of bytes written, otherwise it returns
2271 * a negative error number of the problem.
2272 ****************************************************************************/
2273 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2276 __u16 current_length;
2277 unsigned char *transfer_buffer;
2279 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2281 transfer_buffer = kmalloc (64, GFP_KERNEL);
2282 if (!transfer_buffer) {
2283 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2287 /* need to split these writes up into 64 byte chunks */
2289 while (length > 0) {
2291 current_length = 64;
2293 current_length = length;
2295 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2296 memcpy (transfer_buffer, data, current_length);
2297 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM,
2298 0x40, addr, extAddr, transfer_buffer, current_length, 300);
2301 length -= current_length;
2302 addr += current_length;
2303 data += current_length;
2306 kfree (transfer_buffer);
2311 /****************************************************************************
2313 * writes a number of bytes to the Edgeport device's ROM starting at the
2315 * If successful returns the number of bytes written, otherwise it returns
2316 * a negative error number of the problem.
2317 ****************************************************************************/
2318 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2321 __u16 current_length;
2322 unsigned char *transfer_buffer;
2324 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2326 transfer_buffer = kmalloc (64, GFP_KERNEL);
2327 if (!transfer_buffer) {
2328 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2332 /* need to split these writes up into 64 byte chunks */
2334 while (length > 0) {
2336 current_length = 64;
2338 current_length = length;
2340 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2341 memcpy (transfer_buffer, data, current_length);
2342 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM,
2343 0x40, addr, extAddr, transfer_buffer, current_length, 300);
2346 length -= current_length;
2347 addr += current_length;
2348 data += current_length;
2351 kfree (transfer_buffer);
2356 /****************************************************************************
2358 * reads a number of bytes from the Edgeport device starting at the given
2360 * If successful returns the number of bytes read, otherwise it returns
2361 * a negative error number of the problem.
2362 ****************************************************************************/
2363 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2366 __u16 current_length;
2367 unsigned char *transfer_buffer;
2369 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2371 transfer_buffer = kmalloc (64, GFP_KERNEL);
2372 if (!transfer_buffer) {
2373 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2377 /* need to split these reads up into 64 byte chunks */
2379 while (length > 0) {
2381 current_length = 64;
2383 current_length = length;
2385 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2386 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM,
2387 0xC0, addr, extAddr, transfer_buffer, current_length, 300);
2390 memcpy (data, transfer_buffer, current_length);
2391 length -= current_length;
2392 addr += current_length;
2393 data += current_length;
2396 kfree (transfer_buffer);
2401 /****************************************************************************
2403 * Is used to send a IOSP message to the Edgeport device
2404 ****************************************************************************/
2405 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param)
2407 unsigned char *buffer;
2408 unsigned char *currentCommand;
2412 dbg("%s - %d, %d", __FUNCTION__, command, param);
2414 buffer = kmalloc (10, GFP_ATOMIC);
2416 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10);
2420 currentCommand = buffer;
2422 MAKE_CMD_EXT_CMD (¤tCommand, &length,
2423 edge_port->port->number - edge_port->port->serial->minor,
2426 status = write_cmd_usb (edge_port, buffer, length);
2428 /* something bad happened, let's free up the memory */
2436 /*****************************************************************************
2438 * this function writes the given buffer out to the bulk write endpoint.
2439 *****************************************************************************/
2440 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length)
2442 struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
2447 usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
2449 /* Allocate our next urb */
2450 urb = usb_alloc_urb (0, GFP_ATOMIC);
2455 dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
2457 usb_fill_bulk_urb (urb, edge_serial->serial->dev,
2458 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
2459 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2461 edge_port->commandPending = TRUE;
2462 status = usb_submit_urb(urb, GFP_ATOMIC);
2465 /* something went wrong */
2466 dbg("%s - usb_submit_urb(write bulk) failed", __FUNCTION__);
2467 usb_unlink_urb (urb);
2472 // wait for command to finish
2473 timeout = COMMAND_TIMEOUT;
2475 while (timeout && edge_port->commandPending == TRUE) {
2476 timeout = interruptible_sleep_on_timeout (&edge_port->wait_command, timeout);
2479 if (edge_port->commandPending == TRUE) {
2480 /* command timed out */
2481 dbg("%s - command timed out", __FUNCTION__);
2489 /*****************************************************************************
2490 * send_cmd_write_baud_rate
2491 * this function sends the proper command to change the baud rate of the
2493 *****************************************************************************/
2494 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate)
2496 unsigned char *cmdBuffer;
2497 unsigned char *currCmd;
2501 unsigned char number = edge_port->port->number - edge_port->port->serial->minor;
2503 dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);
2505 status = calc_baud_rate_divisor (baudRate, &divisor);
2507 dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__);
2511 // Alloc memory for the string of commands.
2512 cmdBuffer = kmalloc (0x100, GFP_ATOMIC);
2514 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100);
2517 currCmd = cmdBuffer;
2519 // Enable access to divisor latch
2520 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE );
2522 // Write the divisor itself
2523 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) );
2524 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) );
2526 // Restore original value to disable access to divisor latch
2527 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR);
2529 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen );
2531 /* something bad happened, let's free up the memory */
2539 /*****************************************************************************
2540 * calc_baud_rate_divisor
2541 * this function calculates the proper baud rate divisor for the specified
2543 *****************************************************************************/
2544 static int calc_baud_rate_divisor (int baudrate, int *divisor)
2552 dbg("%s - %d", __FUNCTION__, baudrate);
2554 for (i = 0; i < NUM_ENTRIES(divisor_table); i++) {
2555 if ( divisor_table[i].BaudRate == baudrate ) {
2556 *divisor = divisor_table[i].Divisor;
2561 // We have tried all of the standard baud rates
2562 // lets try to calculate the divisor for this baud rate
2563 // Make sure the baud rate is reasonable
2564 if (baudrate < 230400) {
2566 custom = (__u16)(230400L / baudrate);
2568 // Check for round off
2569 round1 = (__u16)(2304000L / baudrate);
2570 round = (__u16)(round1 - (custom * 10));
2576 dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom);
2584 /*****************************************************************************
2585 * send_cmd_write_uart_register
2586 * this function builds up a uart register message and sends to to the device.
2587 *****************************************************************************/
2588 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue)
2590 unsigned char *cmdBuffer;
2591 unsigned char *currCmd;
2592 unsigned long cmdLen = 0;
2595 dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue);
2597 // Alloc memory for the string of commands.
2598 cmdBuffer = kmalloc (0x10, GFP_ATOMIC);
2599 if (cmdBuffer == NULL ) {
2603 currCmd = cmdBuffer;
2605 // Build a cmd in the buffer to write the given register
2606 MAKE_CMD_WRITE_REG (&currCmd, &cmdLen,
2607 edge_port->port->number - edge_port->port->serial->minor,
2610 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2612 /* something bad happened, let's free up the memory */
2620 /*****************************************************************************
2621 * change_port_settings
2622 * This routine is called to set the UART on the device to match the specified
2624 *****************************************************************************/
2625 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2627 struct tty_struct *tty;
2638 dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2640 if ((!edge_port->open) &&
2641 (!edge_port->openPending)) {
2642 dbg("%s - port not opened", __FUNCTION__);
2646 tty = edge_port->port->tty;
2649 dbg("%s - no tty structures", __FUNCTION__);
2653 cflag = tty->termios->c_cflag;
2655 switch (cflag & CSIZE) {
2656 case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break;
2657 case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break;
2658 case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break;
2660 case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break;
2663 lParity = LCR_PAR_NONE;
2664 if (cflag & PARENB) {
2665 if (cflag & PARODD) {
2666 lParity = LCR_PAR_ODD;
2667 dbg("%s - parity = odd", __FUNCTION__);
2669 lParity = LCR_PAR_EVEN;
2670 dbg("%s - parity = even", __FUNCTION__);
2673 dbg("%s - parity = none", __FUNCTION__);
2676 if (cflag & CSTOPB) {
2678 dbg("%s - stop bits = 2", __FUNCTION__);
2681 dbg("%s - stop bits = 1", __FUNCTION__);
2684 /* figure out the flow control settings */
2685 rxFlow = txFlow = 0x00;
2686 if (cflag & CRTSCTS) {
2687 rxFlow |= IOSP_RX_FLOW_RTS;
2688 txFlow |= IOSP_TX_FLOW_CTS;
2689 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2691 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2694 /* if we are implementing XON/XOFF, set the start and stop character in the device */
2695 if (I_IXOFF(tty) || I_IXON(tty)) {
2696 unsigned char stop_char = STOP_CHAR(tty);
2697 unsigned char start_char = START_CHAR(tty);
2699 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XON_CHAR, start_char);
2700 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char);
2702 /* if we are implementing INBOUND XON/XOFF */
2704 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2705 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2707 dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2710 /* if we are implementing OUTBOUND XON/XOFF */
2712 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2713 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2715 dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2719 /* Set flow control to the configured value */
2720 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2721 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2724 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2725 edge_port->shadowLCR |= (lData | lParity | lStop);
2727 edge_port->validDataMask = mask;
2729 /* Send the updated LCR value to the EdgePort */
2730 status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR);
2735 /* set up the MCR register and send it to the EdgePort */
2736 edge_port->shadowMCR = MCR_MASTER_IE;
2737 if (cflag & CBAUD) {
2738 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2740 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
2745 /* Determine divisor based on baud rate */
2746 baud = tty_get_baud_rate(tty);
2748 /* pick a default, any default... */
2752 dbg("%s - baud rate = %d", __FUNCTION__, baud);
2753 status = send_cmd_write_baud_rate (edge_port, baud);
2759 /****************************************************************************
2761 * Turns a string from Unicode into ASCII.
2762 * Doesn't do a good job with any characters that are outside the normal
2763 * ASCII range, but it's only for debugging...
2764 * NOTE: expects the unicode in LE format
2765 ****************************************************************************/
2766 static void unicode_to_ascii (char *string, short *unicode, int unicode_size)
2769 for (i = 0; i < unicode_size; ++i) {
2770 string[i] = (char)(le16_to_cpu(unicode[i]));
2772 string[unicode_size] = 0x00;
2776 /****************************************************************************
2777 * get_manufacturing_desc
2778 * reads in the manufacturing descriptor and stores it into the serial
2780 ****************************************************************************/
2781 static void get_manufacturing_desc (struct edgeport_serial *edge_serial)
2785 dbg("getting manufacturer descriptor");
2787 response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2788 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN,
2789 (__u8 *)(&edge_serial->manuf_descriptor));
2792 dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n");
2795 dbg("**Manufacturer Descriptor");
2796 dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize);
2797 dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize);
2798 dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev);
2799 dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev);
2800 dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts);
2801 dbg(" DescDate: %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900);
2802 unicode_to_ascii (string, edge_serial->manuf_descriptor.SerialNumber, edge_serial->manuf_descriptor.SerNumLength/2-1);
2803 dbg(" SerialNumber: %s", string);
2804 unicode_to_ascii (string, edge_serial->manuf_descriptor.AssemblyNumber, edge_serial->manuf_descriptor.AssemblyNumLength/2-1);
2805 dbg(" AssemblyNumber: %s", string);
2806 unicode_to_ascii (string, edge_serial->manuf_descriptor.OemAssyNumber, edge_serial->manuf_descriptor.OemAssyNumLength/2-1);
2807 dbg(" OemAssyNumber: %s", string);
2808 dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType);
2809 dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid);
2810 dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig);
2815 /****************************************************************************
2817 * reads in the bootloader descriptor and stores it into the serial
2819 ****************************************************************************/
2820 static void get_boot_desc (struct edgeport_serial *edge_serial)
2824 dbg("getting boot descriptor");
2826 response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2827 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN,
2828 (__u8 *)(&edge_serial->boot_descriptor));
2831 dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n");
2833 dbg("**Boot Descriptor:");
2834 dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2835 dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion);
2836 dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion);
2837 dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2838 dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2839 dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0);
2840 dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1);
2845 /****************************************************************************
2846 * load_application_firmware
2847 * This is called to load the application firmware to the device
2848 ****************************************************************************/
2849 static void load_application_firmware (struct edgeport_serial *edge_serial)
2851 struct edge_firmware_image_record *record;
2852 unsigned char *firmware;
2853 unsigned char *FirmwareImage;
2858 switch (edge_serial->product_info.iDownloadFile) {
2859 case EDGE_DOWNLOAD_FILE_I930:
2860 dbg("downloading firmware version (930) %d.%d.%d",
2861 OperationalCodeImageVersion_GEN1.MajorVersion,
2862 OperationalCodeImageVersion_GEN1.MinorVersion,
2863 OperationalCodeImageVersion_GEN1.BuildNumber);
2864 firmware = &OperationalCodeImage_GEN1[0];
2865 FirmwareImage = &OperationalCodeImage_GEN1[0];
2866 ImageSize = sizeof(OperationalCodeImage_GEN1);
2869 case EDGE_DOWNLOAD_FILE_80251:
2870 dbg("downloading firmware version (80251) %d.%d.%d",
2871 OperationalCodeImageVersion_GEN2.MajorVersion,
2872 OperationalCodeImageVersion_GEN2.MinorVersion,
2873 OperationalCodeImageVersion_GEN2.BuildNumber);
2874 firmware = &OperationalCodeImage_GEN2[0];
2875 FirmwareImage = &OperationalCodeImage_GEN2[0];
2876 ImageSize = sizeof(OperationalCodeImage_GEN2);
2879 case EDGE_DOWNLOAD_FILE_NONE:
2880 dbg ("No download file specified, skipping download\n");
2889 record = (struct edge_firmware_image_record *)firmware;
2890 response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
2892 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);
2895 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
2896 if (firmware >= &FirmwareImage[ImageSize]) {
2901 dbg("sending exec_dl_code");
2902 response = usb_control_msg (edge_serial->serial->dev,
2903 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2904 USB_REQUEST_ION_EXEC_DL_CODE,
2905 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2913 /****************************************************************************
2915 ****************************************************************************/
2916 static int edge_startup (struct usb_serial *serial)
2918 struct edgeport_serial *edge_serial;
2919 struct edgeport_port *edge_port;
2920 struct usb_device *dev;
2925 /* create our private serial structure */
2926 edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
2927 if (edge_serial == NULL) {
2928 dev_err(&serial->dev->dev, "%s - Out of memory", __FUNCTION__);
2931 memset (edge_serial, 0, sizeof(struct edgeport_serial));
2932 edge_serial->serial = serial;
2933 usb_set_serial_data(serial, edge_serial);
2935 /* get the name for the device from the device */
2936 if ( (i = get_string(dev, dev->descriptor.iManufacturer, &edge_serial->name[0])) != 0) {
2937 edge_serial->name[i-1] = ' ';
2940 get_string(dev, dev->descriptor.iProduct, &edge_serial->name[i]);
2942 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2944 /* get the manufacturing descriptor for this device */
2945 get_manufacturing_desc (edge_serial);
2947 /* get the boot descriptor */
2948 get_boot_desc (edge_serial);
2950 get_product_info(edge_serial);
2952 /* set the number of ports from the manufacturing description */
2953 /* serial->num_ports = serial->product_info.NumPorts; */
2954 if (edge_serial->product_info.NumPorts != serial->num_ports) {
2955 warn("%s - Device Reported %d serial ports vs core "
2956 "thinking we have %d ports, email greg@kroah.com this info.",
2957 __FUNCTION__, edge_serial->product_info.NumPorts,
2961 dbg("%s - time 1 %ld", __FUNCTION__, jiffies);
2963 /* now load the application firmware into this device */
2964 load_application_firmware (edge_serial);
2966 dbg("%s - time 2 %ld", __FUNCTION__, jiffies);
2968 /* Check current Edgeport EEPROM and update if necessary */
2969 update_edgeport_E2PROM (edge_serial);
2971 dbg("%s - time 3 %ld", __FUNCTION__, jiffies);
2973 /* set the configuration to use #1 */
2974 // dbg("set_configuration 1");
2975 // usb_set_configuration (dev, 1);
2977 /* we set up the pointers to the endpoints in the edge_open function,
2978 * as the structures aren't created yet. */
2980 /* set up our port private structures */
2981 for (i = 0; i < serial->num_ports; ++i) {
2982 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
2983 if (edge_port == NULL) {
2984 dev_err(&serial->dev->dev, "%s - Out of memory", __FUNCTION__);
2985 usb_set_serial_data(serial, NULL);
2989 memset (edge_port, 0, sizeof(struct edgeport_port));
2990 edge_port->port = serial->port[i];
2991 usb_set_serial_port_data(serial->port[i], edge_port);
2999 /****************************************************************************
3001 * This function is called whenever the device is removed from the usb bus.
3002 ****************************************************************************/
3003 static void edge_shutdown (struct usb_serial *serial)
3007 dbg("%s", __FUNCTION__);
3009 /* stop reads and writes on all ports */
3010 for (i=0; i < serial->num_ports; ++i) {
3011 kfree (usb_get_serial_port_data(serial->port[i]));
3012 usb_set_serial_port_data(serial->port[i], NULL);
3014 kfree (usb_get_serial_data(serial));
3015 usb_set_serial_data(serial, NULL);
3019 /****************************************************************************
3021 * This is called by the module subsystem, or on startup to initialize us
3022 ****************************************************************************/
3023 static int __init edgeport_init(void)
3026 retval = usb_serial_register(&edgeport_1port_device);
3028 goto failed_1port_device_register;
3029 retval = usb_serial_register(&edgeport_2port_device);
3031 goto failed_2port_device_register;
3032 retval = usb_serial_register(&edgeport_4port_device);
3034 goto failed_4port_device_register;
3035 retval = usb_serial_register(&edgeport_8port_device);
3037 goto failed_8port_device_register;
3038 retval = usb_register(&io_driver);
3040 goto failed_usb_register;
3041 info(DRIVER_DESC " " DRIVER_VERSION);
3043 failed_usb_register:
3044 usb_serial_deregister(&edgeport_8port_device);
3045 failed_8port_device_register:
3046 usb_serial_deregister(&edgeport_4port_device);
3047 failed_4port_device_register:
3048 usb_serial_deregister(&edgeport_2port_device);
3049 failed_2port_device_register:
3050 usb_serial_deregister(&edgeport_1port_device);
3051 failed_1port_device_register:
3057 /****************************************************************************
3059 * Called when the driver is about to be unloaded.
3060 ****************************************************************************/
3061 static void __exit edgeport_exit (void)
3063 usb_deregister (&io_driver);
3064 usb_serial_deregister (&edgeport_1port_device);
3065 usb_serial_deregister (&edgeport_2port_device);
3066 usb_serial_deregister (&edgeport_4port_device);
3067 usb_serial_deregister (&edgeport_8port_device);
3070 module_init(edgeport_init);
3071 module_exit(edgeport_exit);
3073 /* Module information */
3074 MODULE_AUTHOR( DRIVER_AUTHOR );
3075 MODULE_DESCRIPTION( DRIVER_DESC );
3076 MODULE_LICENSE("GPL");
3078 MODULE_PARM(debug, "i");
3079 MODULE_PARM_DESC(debug, "Debug enabled or not");