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:
26 * For questions or problems with this driver, contact Inside Out
27 * Networks technical support, or Peter Berger <pberger@brimson.com>,
28 * or Al Borchers <alborchers@steinerpoint.com>.
32 * 2003_04_03 al borchers
33 * - fixed a bug (that shows up with dosemu) where the tty struct is
34 * used in a callback after it has been freed
36 * 2.3 2002_03_08 greg kroah-hartman
37 * - fixed bug when multiple devices were attached at the same time.
39 * 2.2 2001_11_14 greg kroah-hartman
40 * - fixed bug in edge_close that kept the port from being used more
42 * - fixed memory leak on device removal.
43 * - fixed potential double free of memory when command urb submitting
45 * - other small cleanups when the device is removed
47 * 2.1 2001_07_09 greg kroah-hartman
48 * - added support for TIOCMBIS and TIOCMBIC.
51 * - Identify version on module load.
53 * 2.0 2001_03_05 greg kroah-hartman
54 * - reworked entire driver to fit properly in with the other usb-serial
55 * drivers. Occasional oopses still happen, but it's a good start.
57 * 1.2.3 (02/23/2001) greg kroah-hartman
58 * - changed device table to work properly for 2.4.x final format.
59 * - fixed problem with dropping data at high data rates.
61 * 1.2.2 (11/27/2000) greg kroah-hartman
62 * - cleaned up more NTisms.
63 * - Added device table for 2.4.0-test11
65 * 1.2.1 (11/08/2000) greg kroah-hartman
66 * - Started to clean up NTisms.
67 * - Fixed problem with dev field of urb for kernels >= 2.4.0-test9
69 * 1.2 (10/17/2000) David Iacovelli
70 * Remove all EPIC code and GPL source
71 * Fix RELEVANT_IFLAG macro to include flow control
72 * changes port configuration changes.
73 * Fix redefinition of SERIAL_MAGIC
74 * Change all timeout values to 5 seconds
75 * Tried to fix the UHCI multiple urb submission, but failed miserably.
76 * it seems to work fine with OHCI.
77 * ( Greg take a look at the #if 0 at end of WriteCmdUsb() we must
78 * find a way to work arount this UHCI bug )
80 * 1.1 (10/11/2000) David Iacovelli
81 * Fix XON/XOFF flow control to support both IXON and IXOFF
83 * 0.9.27 (06/30/2000) David Iacovelli
84 * Added transmit queue and now allocate urb for command writes.
86 * 0.9.26 (06/29/2000) David Iacovelli
87 * Add support for 80251 based edgeport
89 * 0.9.25 (06/27/2000) David Iacovelli
90 * Do not close the port if it has multiple opens.
92 * 0.9.24 (05/26/2000) David Iacovelli
93 * Add IOCTLs to support RXTX and JAVA POS
94 * and first cut at running BlackBox Demo
96 * 0.9.23 (05/24/2000) David Iacovelli
97 * Add IOCTLs to support RXTX and JAVA POS
99 * 0.9.22 (05/23/2000) David Iacovelli
100 * fixed bug in enumeration. If epconfig turns on mapping by
101 * path after a device is already plugged in, we now update
102 * the mapping correctly
104 * 0.9.21 (05/16/2000) David Iacovelli
105 * Added BlockUntilChaseResp() to also wait for txcredits
106 * Updated the way we allocate and handle write URBs
107 * Add debug code to dump buffers
109 * 0.9.20 (05/01/2000) David Iacovelli
110 * change driver to use usb/tts/
112 * 0.9.19 (05/01/2000) David Iacovelli
113 * Update code to compile if DEBUG is off
115 * 0.9.18 (04/28/2000) David Iacovelli
116 * cleanup and test tty_register with devfs
118 * 0.9.17 (04/27/2000) greg kroah-hartman
119 * changed tty_register around to be like the way it
120 * was before, but now it works properly with devfs.
122 * 0.9.16 (04/26/2000) david iacovelli
123 * Fixed bug in GetProductInfo()
125 * 0.9.15 (04/25/2000) david iacovelli
126 * Updated enumeration
128 * 0.9.14 (04/24/2000) david iacovelli
129 * Removed all config/status IOCTLS and
130 * converted to using /proc/edgeport
131 * still playing with devfs
133 * 0.9.13 (04/24/2000) david iacovelli
134 * Removed configuration based on ttyUSB0
135 * Added support for configuration using /prod/edgeport
136 * first attempt at using devfs (not working yet!)
137 * Added IOCTL to GetProductInfo()
138 * Added support for custom baud rates
139 * Add support for random port numbers
141 * 0.9.12 (04/18/2000) david iacovelli
142 * added additional configuration IOCTLs
143 * use ttyUSB0 for configuration
145 * 0.9.11 (04/17/2000) greg kroah-hartman
146 * fixed module initialization race conditions.
147 * made all urbs dynamically allocated.
148 * made driver devfs compatible. now it only registers the tty device
149 * when the device is actually plugged in.
151 * 0.9.10 (04/13/2000) greg kroah-hartman
152 * added proc interface framework.
154 * 0.9.9 (04/13/2000) david iacovelli
155 * added enumeration code and ioctls to configure the device
157 * 0.9.8 (04/12/2000) david iacovelli
158 * Change interrupt read start when device is plugged in
159 * and stop when device is removed
160 * process interrupt reads when all ports are closed
161 * (keep value of rxBytesAvail consistent with the edgeport)
162 * set the USB_BULK_QUEUE flag so that we can shove a bunch
163 * of urbs at once down the pipe
165 * 0.9.7 (04/10/2000) david iacovelli
166 * start to add enumeration code.
167 * generate serial number for epic devices
168 * add support for kdb
170 * 0.9.6 (03/30/2000) david iacovelli
171 * add IOCTL to get string, manufacture, and boot descriptors
173 * 0.9.5 (03/14/2000) greg kroah-hartman
174 * more error checking added to SerialOpen to try to fix UHCI open problem
176 * 0.9.4 (03/09/2000) greg kroah-hartman
177 * added more error checking to handle oops when data is hanging
178 * around and tty is abruptly closed.
180 * 0.9.3 (03/09/2000) david iacovelli
181 * Add epic support for xon/xoff chars
182 * play with performance
184 * 0.9.2 (03/08/2000) greg kroah-hartman
185 * changed most "info" calls to "dbg"
186 * implemented flow control properly in the termios call
188 * 0.9.1 (03/08/2000) david iacovelli
190 * enabled bootloader update
192 * 0.9 (03/08/2000) greg kroah-hartman
193 * Release to IO networks.
194 * Integrated changes that David made
195 * made getting urbs for writing SMP safe
197 * 0.8 (03/07/2000) greg kroah-hartman
198 * Release to IO networks.
199 * Fixed problems that were seen in code by David.
200 * Now both Edgeport/4 and Edgeport/2 works properly.
201 * Changed most of the functions to use port instead of serial.
203 * 0.7 (02/27/2000) greg kroah-hartman
204 * Milestone 3 release.
205 * Release to IO Networks
206 * ioctl for waiting on line change implemented.
207 * ioctl for getting statistics implemented.
208 * multiport support working.
209 * lsr and msr registers are now handled properly.
210 * change break now hooked up and working.
211 * support for all known Edgeport devices.
213 * 0.6 (02/22/2000) greg kroah-hartman
214 * Release to IO networks.
215 * CHASE is implemented correctly when port is closed.
216 * SerialOpen now blocks correctly until port is fully opened.
218 * 0.5 (02/20/2000) greg kroah-hartman
219 * Release to IO networks.
221 * modem status register changes are not sent on to the user
222 * CHASE is not implemented when the port is closed.
224 * 0.4 (02/16/2000) greg kroah-hartman
225 * Second cut at the CeBit demo.
226 * Doesn't leak memory on every write to the port
227 * Still small leaks on startup.
228 * Added support for Edgeport/2 and Edgeport/8
230 * 0.3 (02/15/2000) greg kroah-hartman
231 * CeBit demo release.
232 * Force the line settings to 4800, 8, 1, e for the demo.
233 * Warning! This version leaks memory like crazy!
235 * 0.2 (01/30/2000) greg kroah-hartman
236 * Milestone 1 release.
237 * Device is found by USB subsystem, enumerated, fimware is downloaded
238 * and the descriptors are printed to the debug log, config is set, and
239 * green light starts to blink. Open port works, and data can be sent
240 * and received at the default settings of the UART. Loopback connector
241 * and debug log confirms this.
243 * 0.1 (01/23/2000) greg kroah-hartman
244 * Initial release to help IO Networks try to set up their test system.
245 * Edgeport4 is recognized, firmware is downloaded, config is set so
246 * device blinks green light every 3 sec. Port is bound, but opening,
247 * closing, and sending data do not work properly.
251 #include <linux/config.h>
252 #include <linux/kernel.h>
253 #include <linux/jiffies.h>
254 #include <linux/errno.h>
255 #include <linux/init.h>
256 #include <linux/slab.h>
257 #include <linux/tty.h>
258 #include <linux/tty_driver.h>
259 #include <linux/tty_flip.h>
260 #include <linux/module.h>
261 #include <linux/spinlock.h>
262 #include <linux/serial.h>
263 #include <linux/ioctl.h>
264 #include <asm/uaccess.h>
265 #include <linux/usb.h>
266 #include "usb-serial.h"
267 #include "io_edgeport.h"
268 #include "io_ionsp.h" /* info for the iosp messages */
269 #include "io_16654.h" /* 16654 UART defines */
272 * Version Information
274 #define DRIVER_VERSION "v2.7"
275 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
276 #define DRIVER_DESC "Edgeport USB Serial Driver"
278 /* First, the latest boot code - for first generation edgeports */
279 #define IMAGE_ARRAY_NAME BootCodeImage_GEN1
280 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1
281 #include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */
283 /* for second generation edgeports */
284 #define IMAGE_ARRAY_NAME BootCodeImage_GEN2
285 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2
286 #include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */
288 /* Then finally the main run-time operational code - for first generation edgeports */
289 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1
290 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1
291 #include "io_fw_down.h" /* Define array OperationalCodeImage[] */
293 /* for second generation edgeports */
294 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2
295 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2
296 #include "io_fw_down2.h" /* Define array OperationalCodeImage[] */
298 #define MAX_NAME_LEN 64
300 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
301 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
302 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
304 /* receive port state */
306 EXPECT_HDR1 = 0, /* Expect header byte 1 */
307 EXPECT_HDR2 = 1, /* Expect header byte 2 */
308 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
309 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
314 * This Transmit queue is an extension of the edgeport Rx buffer.
315 * The maximum amount of data buffered in both the edgeport
316 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
319 unsigned int head; /* index to head pointer (write) */
320 unsigned int tail; /* index to tail pointer (read) */
321 unsigned int count; /* Bytes in queue */
322 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
323 unsigned char *fifo; /* allocated Buffer */
326 /* This structure holds all of the local port information */
327 struct edgeport_port {
328 __u16 txCredits; /* our current credits for this port */
329 __u16 maxTxCredits; /* the max size of the port */
331 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
332 struct urb *write_urb; /* write URB for this port */
333 char write_in_progress; /* TRUE while a write URB is outstanding */
336 __u8 shadowLCR; /* last LCR value received */
337 __u8 shadowMCR; /* last MCR value received */
338 __u8 shadowMSR; /* last MSR value received */
339 __u8 shadowLSR; /* last LSR value received */
340 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
341 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
349 char chaseResponsePending;
351 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
352 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
353 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
354 wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
356 struct async_icount icount;
357 struct usb_serial_port *port; /* loop back to the owner of this object */
361 /* This structure holds all of the individual device information */
362 struct edgeport_serial {
363 char name[MAX_NAME_LEN+1]; /* string name of this device */
365 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
366 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
367 struct edgeport_product_info product_info; /* Product Info */
369 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
370 unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
371 struct urb * interrupt_read_urb; /* our interrupt urb */
373 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
374 unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
375 struct urb * read_urb; /* our bulk read urb */
376 int read_in_progress;
379 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
381 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
383 enum RXSTATE rxState; /* the current state of the bulk receive processor */
384 __u8 rxHeader1; /* receive header byte 1 */
385 __u8 rxHeader2; /* receive header byte 2 */
386 __u8 rxHeader3; /* receive header byte 3 */
387 __u8 rxPort; /* the port that we are currently receiving data for */
388 __u8 rxStatusCode; /* the receive status code */
389 __u8 rxStatusParam; /* the receive status paramater */
390 __s16 rxBytesRemaining; /* the number of port bytes left to read */
391 struct usb_serial *serial; /* loop back to the owner of this object */
394 /* baud rate information */
395 struct divisor_table_entry {
401 // Define table of divisors for Rev A EdgePort/4 hardware
402 // These assume a 3.6864MHz crystal, the standard /16, and
405 static struct divisor_table_entry divisor_table[] = {
408 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
409 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
427 /* local variables */
430 static int low_latency = 1; /* tty low latency flag, on by default */
432 static int CmdUrbs = 0; /* Number of outstanding Command Write Urbs */
435 /* local function prototypes */
437 /* function prototypes for all URB callbacks */
438 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs);
439 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs);
440 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs);
441 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs);
443 /* function prototypes for the usbserial callbacks */
444 static int edge_open (struct usb_serial_port *port, struct file *filp);
445 static void edge_close (struct usb_serial_port *port, struct file *filp);
446 static int edge_write (struct usb_serial_port *port, const unsigned char *buf, int count);
447 static int edge_write_room (struct usb_serial_port *port);
448 static int edge_chars_in_buffer (struct usb_serial_port *port);
449 static void edge_throttle (struct usb_serial_port *port);
450 static void edge_unthrottle (struct usb_serial_port *port);
451 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
452 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
453 static void edge_break (struct usb_serial_port *port, int break_state);
454 static int edge_tiocmget (struct usb_serial_port *port, struct file *file);
455 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
456 static int edge_startup (struct usb_serial *serial);
457 static void edge_shutdown (struct usb_serial *serial);
460 #include "io_tables.h" /* all of the devices that this driver supports */
462 static struct usb_driver io_driver = {
463 .owner = THIS_MODULE,
464 .name = "io_edgeport",
465 .probe = usb_serial_probe,
466 .disconnect = usb_serial_disconnect,
467 .id_table = id_table_combined,
470 /* function prototypes for all of our local functions */
471 static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength);
472 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3);
473 static void edge_tty_recv (struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
474 static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr);
475 static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
476 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param);
477 static int calc_baud_rate_divisor (int baud_rate, int *divisor);
478 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate);
479 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios);
480 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
481 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
482 static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
484 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
485 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
486 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
487 static void get_manufacturing_desc (struct edgeport_serial *edge_serial);
488 static void get_boot_desc (struct edgeport_serial *edge_serial);
489 static void load_application_firmware (struct edgeport_serial *edge_serial);
491 static void unicode_to_ascii (char *string, __le16 *unicode, int unicode_size);
494 // ************************************************************************
495 // ************************************************************************
496 // ************************************************************************
497 // ************************************************************************
499 /************************************************************************
501 * update_edgeport_E2PROM() Compare current versions of *
502 * Boot ROM and Manufacture *
503 * Descriptors with versions *
504 * embedded in this driver *
506 ************************************************************************/
507 static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial)
511 __u8 BootMajorVersion;
512 __u8 BootMinorVersion;
513 __le16 BootBuildNumber;
516 struct edge_firmware_image_record *record;
517 unsigned char *firmware;
521 switch (edge_serial->product_info.iDownloadFile) {
522 case EDGE_DOWNLOAD_FILE_I930:
523 BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion;
524 BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion;
525 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber);
526 BootImage = &BootCodeImage_GEN1[0];
527 BootSize = sizeof( BootCodeImage_GEN1 );
530 case EDGE_DOWNLOAD_FILE_80251:
531 BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion;
532 BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion;
533 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber);
534 BootImage = &BootCodeImage_GEN2[0];
535 BootSize = sizeof( BootCodeImage_GEN2 );
542 // Check Boot Image Version
543 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
544 (edge_serial->boot_descriptor.MinorVersion << 16) +
545 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
547 BootNewVer = (BootMajorVersion << 24) +
548 (BootMinorVersion << 16) +
549 le16_to_cpu(BootBuildNumber);
551 dbg("Current Boot Image version %d.%d.%d",
552 edge_serial->boot_descriptor.MajorVersion,
553 edge_serial->boot_descriptor.MinorVersion,
554 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
557 if (BootNewVer > BootCurVer) {
558 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
559 edge_serial->boot_descriptor.MajorVersion,
560 edge_serial->boot_descriptor.MinorVersion,
561 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
564 le16_to_cpu(BootBuildNumber));
567 dbg("Downloading new Boot Image");
569 firmware = BootImage;
572 record = (struct edge_firmware_image_record *)firmware;
573 response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
575 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));
578 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
579 if (firmware >= &BootImage[BootSize]) {
584 dbg("Boot Image -- already up to date");
589 /************************************************************************
591 * Get string descriptor from device *
593 ************************************************************************/
594 static int get_string (struct usb_device *dev, int Id, char *string)
596 struct usb_string_descriptor StringDesc;
597 struct usb_string_descriptor *pStringDesc;
599 dbg("%s - USB String ID = %d", __FUNCTION__, Id );
601 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
605 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
611 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
616 unicode_to_ascii(string, pStringDesc->wData, pStringDesc->bLength/2-1);
619 return strlen(string);
624 /************************************************************************
626 * Get string descriptor from device
628 ************************************************************************/
629 static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc)
631 struct usb_string_descriptor StringDesc;
632 struct usb_string_descriptor *pStringDesc;
634 dbg("%s - USB String ID = %d", __FUNCTION__, Id );
636 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
640 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
646 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
651 *pRetDesc = pStringDesc;
656 static void get_product_info(struct edgeport_serial *edge_serial)
658 struct edgeport_product_info *product_info = &edge_serial->product_info;
660 memset (product_info, 0, sizeof(struct edgeport_product_info));
662 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
663 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
664 product_info->ProdInfoVer = 0;
666 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
667 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
668 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
669 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
671 product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion;
672 product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion;
673 product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber;
675 memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate));
677 // check if this is 2nd generation hardware
678 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ION_DEVICE_ID_80251_NETCHIP) {
679 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion;
680 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion;
681 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber);
682 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
684 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion;
685 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion;
686 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber);
687 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
690 // Determine Product type and set appropriate flags
691 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
692 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
693 case ION_DEVICE_ID_EDGEPORT_4T:
694 case ION_DEVICE_ID_EDGEPORT_4:
695 case ION_DEVICE_ID_EDGEPORT_2:
696 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
697 case ION_DEVICE_ID_EDGEPORT_8:
698 case ION_DEVICE_ID_EDGEPORT_421:
699 case ION_DEVICE_ID_EDGEPORT_21:
700 case ION_DEVICE_ID_EDGEPORT_2_DIN:
701 case ION_DEVICE_ID_EDGEPORT_4_DIN:
702 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
703 product_info->IsRS232 = 1;
706 case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485
707 product_info->IsRS422 = 1;
708 product_info->IsRS485 = 1;
711 case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422
712 case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422
713 product_info->IsRS422 = 1;
717 // Dump Product Info structure
718 dbg("**Product Information:");
719 dbg(" ProductId %x", product_info->ProductId );
720 dbg(" NumPorts %d", product_info->NumPorts );
721 dbg(" ProdInfoVer %d", product_info->ProdInfoVer );
722 dbg(" IsServer %d", product_info->IsServer);
723 dbg(" IsRS232 %d", product_info->IsRS232 );
724 dbg(" IsRS422 %d", product_info->IsRS422 );
725 dbg(" IsRS485 %d", product_info->IsRS485 );
726 dbg(" RomSize %d", product_info->RomSize );
727 dbg(" RamSize %d", product_info->RamSize );
728 dbg(" CpuRev %x", product_info->CpuRev );
729 dbg(" BoardRev %x", product_info->BoardRev);
730 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
731 product_info->BootMinorVersion,
732 le16_to_cpu(product_info->BootBuildNumber));
733 dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion,
734 product_info->FirmwareMinorVersion,
735 le16_to_cpu(product_info->FirmwareBuildNumber));
736 dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0],
737 product_info->ManufactureDescDate[1],
738 product_info->ManufactureDescDate[2]+1900);
739 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
744 /************************************************************************/
745 /************************************************************************/
746 /* U S B C A L L B A C K F U N C T I O N S */
747 /* U S B C A L L B A C K F U N C T I O N S */
748 /************************************************************************/
749 /************************************************************************/
751 /*****************************************************************************
752 * edge_interrupt_callback
753 * this is the callback function for when we have received data on the
754 * interrupt endpoint.
755 *****************************************************************************/
756 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs)
758 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
759 struct edgeport_port *edge_port;
760 struct usb_serial_port *port;
761 unsigned char *data = urb->transfer_buffer;
762 int length = urb->actual_length;
769 dbg("%s", __FUNCTION__);
771 switch (urb->status) {
778 /* this urb is terminated, clean up */
779 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
782 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
786 // process this interrupt-read even if there are no ports open
788 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
791 bytes_avail = data[0] | (data[1] << 8);
793 spin_lock(&edge_serial->es_lock);
794 edge_serial->rxBytesAvail += bytes_avail;
795 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress);
797 if (edge_serial->rxBytesAvail > 0 &&
798 !edge_serial->read_in_progress) {
799 dbg("%s - posting a read", __FUNCTION__);
800 edge_serial->read_in_progress = TRUE;
802 /* we have pending bytes on the bulk in pipe, send a request */
803 edge_serial->read_urb->dev = edge_serial->serial->dev;
804 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
806 dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__, result);
807 edge_serial->read_in_progress = FALSE;
810 spin_unlock(&edge_serial->es_lock);
813 /* grab the txcredits for the ports if available */
816 while ((position < length) && (portNumber < edge_serial->serial->num_ports)) {
817 txCredits = data[position] | (data[position+1] << 8);
819 port = edge_serial->serial->port[portNumber];
820 edge_port = usb_get_serial_port_data(port);
821 if (edge_port->open) {
822 spin_lock(&edge_port->ep_lock);
823 edge_port->txCredits += txCredits;
824 spin_unlock(&edge_port->ep_lock);
825 dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);
827 /* tell the tty driver that something has changed */
828 if (edge_port->port->tty)
829 tty_wakeup(edge_port->port->tty);
831 // Since we have more credit, check if more data can be sent
832 send_more_port_data(edge_serial, edge_port);
841 result = usb_submit_urb (urb, GFP_ATOMIC);
843 dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result);
848 /*****************************************************************************
849 * edge_bulk_in_callback
850 * this is the callback function for when we have received data on the
852 *****************************************************************************/
853 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
855 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
856 unsigned char *data = urb->transfer_buffer;
858 __u16 raw_data_length;
860 dbg("%s", __FUNCTION__);
863 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
864 edge_serial->read_in_progress = FALSE;
868 if (urb->actual_length == 0) {
869 dbg("%s - read bulk callback with no data", __FUNCTION__);
870 edge_serial->read_in_progress = FALSE;
874 raw_data_length = urb->actual_length;
876 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, raw_data_length, data);
878 spin_lock(&edge_serial->es_lock);
880 /* decrement our rxBytes available by the number that we just got */
881 edge_serial->rxBytesAvail -= raw_data_length;
883 dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail);
885 process_rcvd_data (edge_serial, data, urb->actual_length);
887 /* check to see if there's any more data for us to read */
888 if (edge_serial->rxBytesAvail > 0) {
889 dbg("%s - posting a read", __FUNCTION__);
890 edge_serial->read_urb->dev = edge_serial->serial->dev;
891 status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
893 dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status);
894 edge_serial->read_in_progress = FALSE;
897 edge_serial->read_in_progress = FALSE;
900 spin_unlock(&edge_serial->es_lock);
904 /*****************************************************************************
905 * edge_bulk_out_data_callback
906 * this is the callback function for when we have finished sending serial data
907 * on the bulk out endpoint.
908 *****************************************************************************/
909 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs)
911 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
912 struct tty_struct *tty;
914 dbg("%s", __FUNCTION__);
917 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
920 tty = edge_port->port->tty;
922 if (tty && edge_port->open) {
923 /* let the tty driver wakeup if it has a special write_wakeup function */
927 // Release the Write URB
928 edge_port->write_in_progress = FALSE;
930 // Check if more data needs to be sent
931 send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port);
935 /*****************************************************************************
937 * this is the callback function for when we have finished sending a command
938 * on the bulk out endpoint.
939 *****************************************************************************/
940 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs)
942 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
943 struct tty_struct *tty;
944 int status = urb->status;
946 dbg("%s", __FUNCTION__);
949 dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
952 /* clean up the transfer buffer */
953 if (urb->transfer_buffer != NULL) {
954 kfree(urb->transfer_buffer);
957 /* Free the command urb */
961 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status);
965 /* Get pointer to tty */
966 tty = edge_port->port->tty;
968 /* tell the tty driver that something has changed */
969 if (tty && edge_port->open)
972 /* we have completed the command */
973 edge_port->commandPending = FALSE;
974 wake_up_interruptible(&edge_port->wait_command);
978 /*****************************************************************************
979 * Driver tty interface functions
980 *****************************************************************************/
982 /*****************************************************************************
984 * this function is called by the tty driver when a port is opened
985 * If successful, we return 0
986 * Otherwise we return a negative error number.
987 *****************************************************************************/
988 static int edge_open (struct usb_serial_port *port, struct file * filp)
990 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
991 struct usb_serial *serial;
992 struct edgeport_serial *edge_serial;
996 dbg("%s - port %d", __FUNCTION__, port->number);
998 if (edge_port == NULL)
1002 port->tty->low_latency = low_latency;
1004 /* see if we've set up our endpoint info yet (can't set it up in edge_startup
1005 as the structures were not set up at that time.) */
1006 serial = port->serial;
1007 edge_serial = usb_get_serial_data(serial);
1008 if (edge_serial == NULL) {
1011 if (edge_serial->interrupt_in_buffer == NULL) {
1012 struct usb_serial_port *port0 = serial->port[0];
1014 /* not set up yet, so do it now */
1015 edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer;
1016 edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress;
1017 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
1018 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
1019 edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress;
1020 edge_serial->read_urb = port0->read_urb;
1021 edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress;
1023 /* set up our interrupt urb */
1024 usb_fill_int_urb(edge_serial->interrupt_read_urb,
1026 usb_rcvintpipe(serial->dev,
1027 port0->interrupt_in_endpointAddress),
1028 port0->interrupt_in_buffer,
1029 edge_serial->interrupt_read_urb->transfer_buffer_length,
1030 edge_interrupt_callback, edge_serial,
1031 edge_serial->interrupt_read_urb->interval);
1033 /* set up our bulk in urb */
1034 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
1035 usb_rcvbulkpipe(serial->dev,
1036 port0->bulk_in_endpointAddress),
1037 port0->bulk_in_buffer,
1038 edge_serial->read_urb->transfer_buffer_length,
1039 edge_bulk_in_callback, edge_serial);
1040 edge_serial->read_in_progress = FALSE;
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);
1103 edge_port->write_in_progress = FALSE;
1105 if (!edge_port->write_urb) {
1106 dbg("%s - no memory", __FUNCTION__);
1107 edge_close (port, filp);
1111 dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits);
1113 dbg("%s exited", __FUNCTION__);
1119 /************************************************************************
1121 * block_until_chase_response
1123 * This function will block the close until one of the following:
1124 * 1. Response to our Chase comes from Edgeport
1125 * 2. A timout of 10 seconds without activity has expired
1126 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
1128 ************************************************************************/
1129 static void block_until_chase_response(struct edgeport_port *edge_port)
1136 // Save Last credits
1137 lastCredits = edge_port->txCredits;
1139 // Did we get our Chase response
1140 if (edge_port->chaseResponsePending == FALSE) {
1141 dbg("%s - Got Chase Response", __FUNCTION__);
1143 // did we get all of our credit back?
1144 if (edge_port->txCredits == edge_port->maxTxCredits ) {
1145 dbg("%s - Got all credits", __FUNCTION__);
1150 // Block the thread for a while
1151 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1153 if (lastCredits == edge_port->txCredits) {
1154 // No activity.. count down.
1157 edge_port->chaseResponsePending = FALSE;
1158 dbg("%s - Chase TIMEOUT", __FUNCTION__);
1162 // Reset timout value back to 10 seconds
1163 dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits);
1170 /************************************************************************
1172 * block_until_tx_empty
1174 * This function will block the close until one of the following:
1176 * 2. The edgeport has stopped
1177 * 3. A timout of 3 seconds without activity has expired
1179 ************************************************************************/
1180 static void block_until_tx_empty (struct edgeport_port *edge_port)
1182 struct TxFifo *fifo = &edge_port->txfifo;
1184 int timeout = HZ/10;
1189 lastCount = fifo->count;
1191 // Is the Edgeport Buffer empty?
1192 if (lastCount == 0) {
1193 dbg("%s - TX Buffer Empty", __FUNCTION__);
1197 // Block the thread for a while
1198 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1200 dbg("%s wait", __FUNCTION__);
1202 if (lastCount == fifo->count) {
1203 // No activity.. count down.
1206 dbg("%s - TIMEOUT", __FUNCTION__);
1210 // Reset timout value back to seconds
1217 /*****************************************************************************
1219 * this function is called by the tty driver when a port is closed
1220 *****************************************************************************/
1221 static void edge_close (struct usb_serial_port *port, struct file * filp)
1223 struct edgeport_serial *edge_serial;
1224 struct edgeport_port *edge_port;
1227 dbg("%s - port %d", __FUNCTION__, port->number);
1229 edge_serial = usb_get_serial_data(port->serial);
1230 edge_port = usb_get_serial_port_data(port);
1231 if ((edge_serial == NULL) || (edge_port == NULL))
1234 // block until tx is empty
1235 block_until_tx_empty(edge_port);
1237 edge_port->closePending = TRUE;
1239 /* flush and chase */
1240 edge_port->chaseResponsePending = TRUE;
1242 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1243 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1245 // block until chase finished
1246 block_until_chase_response(edge_port);
1248 edge_port->chaseResponsePending = FALSE;
1251 /* close the port */
1252 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
1253 send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
1255 //port->close = TRUE;
1256 edge_port->closePending = FALSE;
1257 edge_port->open = FALSE;
1258 edge_port->openPending = FALSE;
1260 if (edge_port->write_urb) {
1261 usb_kill_urb(edge_port->write_urb);
1264 if (edge_port->write_urb) {
1265 /* if this urb had a transfer buffer already (old transfer) free it */
1266 if (edge_port->write_urb->transfer_buffer != NULL) {
1267 kfree(edge_port->write_urb->transfer_buffer);
1269 usb_free_urb (edge_port->write_urb);
1270 edge_port->write_urb = NULL;
1272 if (edge_port->txfifo.fifo) {
1273 kfree(edge_port->txfifo.fifo);
1274 edge_port->txfifo.fifo = NULL;
1277 dbg("%s exited", __FUNCTION__);
1280 /*****************************************************************************
1282 * this function is called by the tty driver when data should be written to
1284 * If successful, we return the number of bytes written, otherwise we return
1285 * a negative error number.
1286 *****************************************************************************/
1287 static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
1289 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1290 struct TxFifo *fifo;
1295 unsigned long flags;
1297 dbg("%s - port %d", __FUNCTION__, port->number);
1299 if (edge_port == NULL)
1302 // get a pointer to the Tx fifo
1303 fifo = &edge_port->txfifo;
1305 spin_lock_irqsave(&edge_port->ep_lock, flags);
1307 // calculate number of bytes to put in fifo
1308 copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));
1310 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__,
1311 port->number, count, edge_port->txCredits - fifo->count, copySize);
1313 /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
1314 if (copySize == 0) {
1315 dbg("%s - copySize = Zero", __FUNCTION__);
1320 // since we can never overflow the buffer we do not have to check for full condition
1322 // the copy is done is two parts -- first fill to the end of the buffer
1323 // then copy the reset from the start of the buffer
1325 bytesleft = fifo->size - fifo->head;
1326 firsthalf = min (bytesleft, copySize);
1327 dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft);
1329 /* now copy our data */
1330 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1331 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]);
1333 // update the index and size
1334 fifo->head += firsthalf;
1335 fifo->count += firsthalf;
1338 if (fifo->head == fifo->size) {
1342 secondhalf = copySize-firsthalf;
1345 dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf);
1346 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1347 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]);
1348 // update the index and size
1349 fifo->count += secondhalf;
1350 fifo->head += secondhalf;
1351 // No need to check for wrap since we can not get to end of fifo in this part
1355 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1357 send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port);
1359 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count);
1365 /************************************************************************
1367 * send_more_port_data()
1369 * This routine attempts to write additional UART transmit data
1370 * to a port over the USB bulk pipe. It is called (1) when new
1371 * data has been written to a port's TxBuffer from higher layers
1372 * (2) when the peripheral sends us additional TxCredits indicating
1373 * that it can accept more Tx data for a given port; and (3) when
1374 * a bulk write completes successfully and we want to see if we
1375 * can transmit more.
1377 ************************************************************************/
1378 static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port)
1380 struct TxFifo *fifo = &edge_port->txfifo;
1382 unsigned char *buffer;
1388 unsigned long flags;
1390 dbg("%s(%d)", __FUNCTION__, edge_port->port->number);
1392 spin_lock_irqsave(&edge_port->ep_lock, flags);
1394 if (edge_port->write_in_progress ||
1396 (fifo->count == 0)) {
1397 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress);
1401 // since the amount of data in the fifo will always fit into the
1402 // edgeport buffer we do not need to check the write length
1404 // Do we have enough credits for this port to make it worthwhile
1405 // to bother queueing a write. If it's too small, say a few bytes,
1406 // it's better to wait for more credits so we can do a larger
1408 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits,EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1409 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits );
1414 edge_port->write_in_progress = TRUE;
1416 // get a pointer to the write_urb
1417 urb = edge_port->write_urb;
1419 /* if this urb had a transfer buffer already (old transfer) free it */
1420 if (urb->transfer_buffer != NULL) {
1421 kfree(urb->transfer_buffer);
1422 urb->transfer_buffer = NULL;
1425 /* build the data header for the buffer and port that we are about to send out */
1426 count = fifo->count;
1427 buffer = kmalloc (count+2, GFP_ATOMIC);
1428 if (buffer == NULL) {
1429 dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__);
1430 edge_port->write_in_progress = FALSE;
1433 buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
1434 buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count);
1436 /* now copy our data */
1437 bytesleft = fifo->size - fifo->tail;
1438 firsthalf = min (bytesleft, count);
1439 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1440 fifo->tail += firsthalf;
1441 fifo->count -= firsthalf;
1442 if (fifo->tail == fifo->size) {
1446 secondhalf = count-firsthalf;
1448 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf);
1449 fifo->tail += secondhalf;
1450 fifo->count -= secondhalf;
1454 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, count, &buffer[2]);
1456 /* fill up the urb with all of our data and submit it */
1457 usb_fill_bulk_urb (urb, edge_serial->serial->dev,
1458 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
1459 buffer, count+2, edge_bulk_out_data_callback, edge_port);
1461 /* decrement the number of credits we have by the number we just sent */
1462 edge_port->txCredits -= count;
1463 edge_port->icount.tx += count;
1465 urb->dev = edge_serial->serial->dev;
1466 status = usb_submit_urb(urb, GFP_ATOMIC);
1468 /* something went wrong */
1469 dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__, status);
1470 edge_port->write_in_progress = FALSE;
1472 /* revert the credits as something bad happened. */
1473 edge_port->txCredits += count;
1474 edge_port->icount.tx -= count;
1476 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count);
1479 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1483 /*****************************************************************************
1485 * this function is called by the tty driver when it wants to know how many
1486 * bytes of data we can accept for a specific port.
1487 * If successful, we return the amount of room that we have for this port
1489 * Otherwise we return a negative error number.
1490 *****************************************************************************/
1491 static int edge_write_room (struct usb_serial_port *port)
1493 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1495 unsigned long flags;
1497 dbg("%s", __FUNCTION__);
1499 if (edge_port == NULL)
1501 if (edge_port->closePending == TRUE)
1504 dbg("%s - port %d", __FUNCTION__, port->number);
1506 if (!edge_port->open) {
1507 dbg("%s - port not opened", __FUNCTION__);
1511 // total of both buffers is still txCredit
1512 spin_lock_irqsave(&edge_port->ep_lock, flags);
1513 room = edge_port->txCredits - edge_port->txfifo.count;
1514 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1516 dbg("%s - returns %d", __FUNCTION__, room);
1521 /*****************************************************************************
1522 * edge_chars_in_buffer
1523 * this function is called by the tty driver when it wants to know how many
1524 * bytes of data we currently have outstanding in the port (data that has
1525 * been written, but hasn't made it out the port yet)
1526 * If successful, we return the number of bytes left to be written in the
1528 * Otherwise we return a negative error number.
1529 *****************************************************************************/
1530 static int edge_chars_in_buffer (struct usb_serial_port *port)
1532 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1534 unsigned long flags;
1536 dbg("%s", __FUNCTION__);
1538 if (edge_port == NULL)
1540 if (edge_port->closePending == TRUE)
1543 if (!edge_port->open) {
1544 dbg("%s - port not opened", __FUNCTION__);
1548 spin_lock_irqsave(&edge_port->ep_lock, flags);
1549 num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;
1550 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1552 dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars);
1559 /*****************************************************************************
1561 * this function is called by the tty driver when it wants to stop the data
1562 * being read from the port.
1563 *****************************************************************************/
1564 static void edge_throttle (struct usb_serial_port *port)
1566 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1567 struct tty_struct *tty;
1570 dbg("%s - port %d", __FUNCTION__, port->number);
1572 if (edge_port == NULL)
1575 if (!edge_port->open) {
1576 dbg("%s - port not opened", __FUNCTION__);
1582 dbg ("%s - no tty available", __FUNCTION__);
1586 /* if we are implementing XON/XOFF, send the stop character */
1588 unsigned char stop_char = STOP_CHAR(tty);
1589 status = edge_write (port, &stop_char, 1);
1595 /* if we are implementing RTS/CTS, toggle that line */
1596 if (tty->termios->c_cflag & CRTSCTS) {
1597 edge_port->shadowMCR &= ~MCR_RTS;
1598 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1608 /*****************************************************************************
1610 * this function is called by the tty driver when it wants to resume the data
1611 * being read from the port (called after SerialThrottle is called)
1612 *****************************************************************************/
1613 static void edge_unthrottle (struct usb_serial_port *port)
1615 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1616 struct tty_struct *tty;
1619 dbg("%s - port %d", __FUNCTION__, port->number);
1621 if (edge_port == NULL)
1624 if (!edge_port->open) {
1625 dbg("%s - port not opened", __FUNCTION__);
1631 dbg ("%s - no tty available", __FUNCTION__);
1635 /* if we are implementing XON/XOFF, send the start character */
1637 unsigned char start_char = START_CHAR(tty);
1638 status = edge_write (port, &start_char, 1);
1644 /* if we are implementing RTS/CTS, toggle that line */
1645 if (tty->termios->c_cflag & CRTSCTS) {
1646 edge_port->shadowMCR |= MCR_RTS;
1647 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1657 /*****************************************************************************
1659 * this function is called by the tty driver when it wants to change the termios structure
1660 *****************************************************************************/
1661 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1663 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1664 struct tty_struct *tty = port->tty;
1667 if (!port->tty || !port->tty->termios) {
1668 dbg ("%s - no tty or termios", __FUNCTION__);
1672 cflag = tty->termios->c_cflag;
1673 /* check that they really want us to change something */
1675 if (cflag == old_termios->c_cflag &&
1676 tty->termios->c_iflag == old_termios->c_iflag) {
1677 dbg("%s - nothing to change", __FUNCTION__);
1682 dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
1683 tty->termios->c_cflag, tty->termios->c_iflag);
1685 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
1686 old_termios->c_cflag, old_termios->c_iflag);
1689 dbg("%s - port %d", __FUNCTION__, port->number);
1691 if (edge_port == NULL)
1694 if (!edge_port->open) {
1695 dbg("%s - port not opened", __FUNCTION__);
1699 /* change the port settings to the new ones specified */
1700 change_port_settings (edge_port, old_termios);
1706 /*****************************************************************************
1707 * get_lsr_info - get line status register info
1709 * Purpose: Let user call ioctl() to get info when the UART physically
1710 * is emptied. On bus types like RS485, the transmitter must
1711 * release the bus after transmitting. This must be done when
1712 * the transmit shift register is empty, not be done when the
1713 * transmit holding register is empty. This functionality
1714 * allows an RS485 driver to be written in user space.
1715 *****************************************************************************/
1716 static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value)
1718 unsigned int result = 0;
1719 unsigned long flags;
1721 spin_lock_irqsave(&edge_port->ep_lock, flags);
1722 if (edge_port->maxTxCredits == edge_port->txCredits &&
1723 edge_port->txfifo.count == 0) {
1724 dbg("%s -- Empty", __FUNCTION__);
1725 result = TIOCSER_TEMT;
1727 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1729 if (copy_to_user(value, &result, sizeof(int)))
1734 static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value)
1736 unsigned int result = 0;
1737 struct tty_struct *tty = edge_port->port->tty;
1740 return -ENOIOCTLCMD;
1742 result = tty->read_cnt;
1744 dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result);
1745 if (copy_to_user(value, &result, sizeof(int)))
1748 return -ENOIOCTLCMD;
1751 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
1753 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1756 dbg("%s - port %d", __FUNCTION__, port->number);
1758 mcr = edge_port->shadowMCR;
1759 if (set & TIOCM_RTS)
1761 if (set & TIOCM_DTR)
1763 if (set & TIOCM_LOOP)
1764 mcr |= MCR_LOOPBACK;
1766 if (clear & TIOCM_RTS)
1768 if (clear & TIOCM_DTR)
1770 if (clear & TIOCM_LOOP)
1771 mcr &= ~MCR_LOOPBACK;
1773 edge_port->shadowMCR = mcr;
1775 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1780 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
1782 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1783 unsigned int result = 0;
1787 dbg("%s - port %d", __FUNCTION__, port->number);
1789 msr = edge_port->shadowMSR;
1790 mcr = edge_port->shadowMCR;
1791 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1792 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1793 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1794 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1795 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1796 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1799 dbg("%s -- %x", __FUNCTION__, result);
1804 static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
1806 struct serial_struct tmp;
1811 memset(&tmp, 0, sizeof(tmp));
1813 tmp.type = PORT_16550A;
1814 tmp.line = edge_port->port->serial->minor;
1815 tmp.port = edge_port->port->number;
1817 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1818 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1819 tmp.baud_base = 9600;
1821 tmp.close_delay = 5*HZ;
1822 tmp.closing_wait = 30*HZ;
1824 tmp.close_delay = 2*HZ;
1825 tmp.closing_wait = 65534;
1827 // tmp.custom_divisor = state->custom_divisor;
1828 // tmp.hub6 = state->hub6;
1829 // tmp.io_type = state->io_type;
1831 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1838 /*****************************************************************************
1840 * this function handles any ioctl calls to the driver
1841 *****************************************************************************/
1842 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
1844 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1845 struct async_icount cnow;
1846 struct async_icount cprev;
1847 struct serial_icounter_struct icount;
1850 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
1853 // return number of bytes available
1855 dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
1856 return get_number_bytes_avail(edge_port, (unsigned int __user *) arg);
1860 dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
1861 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1865 dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number);
1866 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1869 dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number);
1873 dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
1874 cprev = edge_port->icount;
1876 interruptible_sleep_on(&edge_port->delta_msr_wait);
1877 /* see if a signal did it */
1878 if (signal_pending(current))
1879 return -ERESTARTSYS;
1880 cnow = edge_port->icount;
1881 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1882 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1883 return -EIO; /* no change => error */
1884 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1885 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1886 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
1887 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
1896 cnow = edge_port->icount;
1897 memset(&icount, 0, sizeof(icount));
1898 icount.cts = cnow.cts;
1899 icount.dsr = cnow.dsr;
1900 icount.rng = cnow.rng;
1901 icount.dcd = cnow.dcd;
1902 icount.rx = cnow.rx;
1903 icount.tx = cnow.tx;
1904 icount.frame = cnow.frame;
1905 icount.overrun = cnow.overrun;
1906 icount.parity = cnow.parity;
1907 icount.brk = cnow.brk;
1908 icount.buf_overrun = cnow.buf_overrun;
1910 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx );
1911 if (copy_to_user((void __user *)arg, &icount, sizeof(icount)))
1916 return -ENOIOCTLCMD;
1920 /*****************************************************************************
1922 * this function sends a break to the port
1923 *****************************************************************************/
1924 static void edge_break (struct usb_serial_port *port, int break_state)
1926 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1929 /* flush and chase */
1930 edge_port->chaseResponsePending = TRUE;
1932 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1933 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1935 // block until chase finished
1936 block_until_chase_response(edge_port);
1938 edge_port->chaseResponsePending = FALSE;
1941 if (break_state == -1) {
1942 dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__);
1943 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
1945 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__);
1946 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
1949 dbg("%s - error sending break set/clear command.", __FUNCTION__);
1956 /*****************************************************************************
1958 * this function handles the data received on the bulk in pipe.
1959 *****************************************************************************/
1960 static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength)
1962 struct usb_serial_port *port;
1963 struct edgeport_port *edge_port;
1964 struct tty_struct *tty;
1965 __u16 lastBufferLength;
1968 dbg("%s", __FUNCTION__);
1970 lastBufferLength = bufferLength + 1;
1972 while (bufferLength > 0) {
1973 /* failsafe incase we get a message that we don't understand */
1974 if (lastBufferLength == bufferLength) {
1975 dbg("%s - stuck in loop, exiting it.", __FUNCTION__);
1978 lastBufferLength = bufferLength;
1980 switch (edge_serial->rxState) {
1982 edge_serial->rxHeader1 = *buffer;
1986 if (bufferLength == 0) {
1987 edge_serial->rxState = EXPECT_HDR2;
1990 /* otherwise, drop on through */
1993 edge_serial->rxHeader2 = *buffer;
1997 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2);
1999 // Process depending on whether this header is
2002 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
2003 // Decode this status header and goto EXPECT_HDR1 (if we
2004 // can process the status with only 2 bytes), or goto
2005 // EXPECT_HDR3 to get the third byte.
2007 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
2008 edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1);
2010 if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) {
2011 // This status needs additional bytes. Save what we have
2012 // and then wait for more data.
2013 edge_serial->rxStatusParam = edge_serial->rxHeader2;
2015 edge_serial->rxState = EXPECT_HDR3;
2019 // We have all the header bytes, process the status now
2020 process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0);
2021 edge_serial->rxState = EXPECT_HDR1;
2024 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
2025 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2);
2027 dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining);
2029 //ASSERT( DevExt->RxPort < DevExt->NumPorts );
2030 //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
2032 if (bufferLength == 0 ) {
2033 edge_serial->rxState = EXPECT_DATA;
2036 // Else, drop through
2039 case EXPECT_DATA: // Expect data
2041 if (bufferLength < edge_serial->rxBytesRemaining) {
2042 rxLen = bufferLength;
2043 edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer
2045 // BufLen >= RxBytesRemaining
2046 rxLen = edge_serial->rxBytesRemaining;
2047 edge_serial->rxState = EXPECT_HDR1; // Start another header next time
2050 bufferLength -= rxLen;
2051 edge_serial->rxBytesRemaining -= rxLen;
2053 /* spit this data back into the tty driver if this port is open */
2055 port = edge_serial->serial->port[edge_serial->rxPort];
2056 edge_port = usb_get_serial_port_data(port);
2057 if (edge_port->open) {
2058 tty = edge_port->port->tty;
2060 dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort);
2061 edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
2063 edge_port->icount.rx += rxLen;
2070 case EXPECT_HDR3: // Expect 3rd byte of status header
2071 edge_serial->rxHeader3 = *buffer;
2075 // We have all the header bytes, process the status now
2076 process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3);
2077 edge_serial->rxState = EXPECT_HDR1;
2085 /*****************************************************************************
2086 * process_rcvd_status
2087 * this function handles the any status messages received on the bulk in pipe.
2088 *****************************************************************************/
2089 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3)
2091 struct usb_serial_port *port;
2092 struct edgeport_port *edge_port;
2093 __u8 code = edge_serial->rxStatusCode;
2095 /* switch the port pointer to the one being currently talked about */
2096 port = edge_serial->serial->port[edge_serial->rxPort];
2097 edge_port = usb_get_serial_port_data(port);
2098 if (edge_port == NULL) {
2099 dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort);
2103 dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort);
2105 if (code == IOSP_EXT_STATUS) {
2107 case IOSP_EXT_STATUS_CHASE_RSP:
2108 // we want to do EXT status regardless of port open/closed
2109 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 );
2110 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call
2111 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
2112 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
2113 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
2114 // like wait longer in block_until_chase_response, but for now we don't.
2115 edge_port->chaseResponsePending = FALSE;
2116 wake_up_interruptible (&edge_port->wait_chase);
2119 case IOSP_EXT_STATUS_RX_CHECK_RSP:
2120 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 );
2121 //Port->RxCheckRsp = TRUE;
2126 if (code == IOSP_STATUS_OPEN_RSP) {
2127 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
2128 edge_port->maxTxCredits = edge_port->txCredits;
2129 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits);
2130 handle_new_msr (edge_port, byte2);
2132 /* send the current line settings to the port so we are in sync with any further termios calls */
2133 if (edge_port->port->tty)
2134 change_port_settings (edge_port, edge_port->port->tty->termios);
2136 /* we have completed the open */
2137 edge_port->openPending = FALSE;
2138 edge_port->open = TRUE;
2139 wake_up_interruptible(&edge_port->wait_open);
2143 // If port is closed, silently discard all rcvd status. We can
2144 // have cases where buffered status is received AFTER the close
2145 // port command is sent to the Edgeport.
2146 if ((!edge_port->open ) || (edge_port->closePending)) {
2151 // Not currently sent by Edgeport
2152 case IOSP_STATUS_LSR:
2153 dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2154 handle_new_lsr (edge_port, FALSE, byte2, 0);
2157 case IOSP_STATUS_LSR_DATA:
2158 dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2159 // byte2 is LSR Register
2160 // byte3 is broken data byte
2161 handle_new_lsr (edge_port, TRUE, byte2, byte3);
2164 // case IOSP_EXT_4_STATUS:
2165 // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2168 case IOSP_STATUS_MSR:
2169 dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2171 // Process this new modem status and generate appropriate
2172 // events, etc, based on the new status. This routine
2173 // also saves the MSR in Port->ShadowMsr.
2174 handle_new_msr(edge_port, byte2);
2178 dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code);
2186 /*****************************************************************************
2188 * this function passes data on to the tty flip buffer
2189 *****************************************************************************/
2190 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
2195 if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
2196 tty_flip_buffer_push(tty);
2197 if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
2198 dev_err(dev, "%s - dropping data, %d bytes lost\n",
2199 __FUNCTION__, length);
2203 cnt = min(length, TTY_FLIPBUF_SIZE - tty->flip.count);
2204 memcpy(tty->flip.char_buf_ptr, data, cnt);
2205 memset(tty->flip.flag_buf_ptr, 0, cnt);
2206 tty->flip.char_buf_ptr += cnt;
2207 tty->flip.flag_buf_ptr += cnt;
2208 tty->flip.count += cnt;
2211 } while (length > 0);
2213 tty_flip_buffer_push(tty);
2217 /*****************************************************************************
2219 * this function handles any change to the msr register for a port.
2220 *****************************************************************************/
2221 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2223 struct async_icount *icount;
2225 dbg("%s %02x", __FUNCTION__, newMsr);
2227 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2228 icount = &edge_port->icount;
2230 /* update input line counters */
2231 if (newMsr & EDGEPORT_MSR_DELTA_CTS) {
2234 if (newMsr & EDGEPORT_MSR_DELTA_DSR) {
2237 if (newMsr & EDGEPORT_MSR_DELTA_CD) {
2240 if (newMsr & EDGEPORT_MSR_DELTA_RI) {
2243 wake_up_interruptible(&edge_port->delta_msr_wait);
2246 /* Save the new modem status */
2247 edge_port->shadowMSR = newMsr & 0xf0;
2253 /*****************************************************************************
2255 * this function handles any change to the lsr register for a port.
2256 *****************************************************************************/
2257 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data)
2259 __u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2260 struct async_icount *icount;
2262 dbg("%s - %02x", __FUNCTION__, newLsr);
2264 edge_port->shadowLSR = lsr;
2266 if (newLsr & LSR_BREAK) {
2268 // Parity and Framing errors only count if they
2269 // occur exclusive of a break being
2272 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2275 /* Place LSR data byte into Rx buffer */
2276 if (lsrData && edge_port->port->tty)
2277 edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
2279 /* update input line counters */
2280 icount = &edge_port->icount;
2281 if (newLsr & LSR_BREAK) {
2284 if (newLsr & LSR_OVER_ERR) {
2287 if (newLsr & LSR_PAR_ERR) {
2290 if (newLsr & LSR_FRM_ERR) {
2298 /****************************************************************************
2300 * writes a number of bytes to the Edgeport device's sram starting at the
2302 * If successful returns the number of bytes written, otherwise it returns
2303 * a negative error number of the problem.
2304 ****************************************************************************/
2305 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2308 __u16 current_length;
2309 unsigned char *transfer_buffer;
2311 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2313 transfer_buffer = kmalloc (64, GFP_KERNEL);
2314 if (!transfer_buffer) {
2315 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2319 /* need to split these writes up into 64 byte chunks */
2321 while (length > 0) {
2323 current_length = 64;
2325 current_length = length;
2327 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2328 memcpy (transfer_buffer, data, current_length);
2329 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM,
2330 0x40, addr, extAddr, transfer_buffer, current_length, 300);
2333 length -= current_length;
2334 addr += current_length;
2335 data += current_length;
2338 kfree (transfer_buffer);
2343 /****************************************************************************
2345 * writes a number of bytes to the Edgeport device's ROM starting at the
2347 * If successful returns the number of bytes written, otherwise it returns
2348 * a negative error number of the problem.
2349 ****************************************************************************/
2350 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2353 __u16 current_length;
2354 unsigned char *transfer_buffer;
2356 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2358 transfer_buffer = kmalloc (64, GFP_KERNEL);
2359 if (!transfer_buffer) {
2360 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2364 /* need to split these writes up into 64 byte chunks */
2366 while (length > 0) {
2368 current_length = 64;
2370 current_length = length;
2372 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2373 memcpy (transfer_buffer, data, current_length);
2374 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM,
2375 0x40, addr, extAddr, transfer_buffer, current_length, 300);
2378 length -= current_length;
2379 addr += current_length;
2380 data += current_length;
2383 kfree (transfer_buffer);
2388 /****************************************************************************
2390 * reads a number of bytes from the Edgeport device starting at the given
2392 * If successful returns the number of bytes read, otherwise it returns
2393 * a negative error number of the problem.
2394 ****************************************************************************/
2395 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2398 __u16 current_length;
2399 unsigned char *transfer_buffer;
2401 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2403 transfer_buffer = kmalloc (64, GFP_KERNEL);
2404 if (!transfer_buffer) {
2405 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2409 /* need to split these reads up into 64 byte chunks */
2411 while (length > 0) {
2413 current_length = 64;
2415 current_length = length;
2417 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2418 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM,
2419 0xC0, addr, extAddr, transfer_buffer, current_length, 300);
2422 memcpy (data, transfer_buffer, current_length);
2423 length -= current_length;
2424 addr += current_length;
2425 data += current_length;
2428 kfree (transfer_buffer);
2433 /****************************************************************************
2435 * Is used to send a IOSP message to the Edgeport device
2436 ****************************************************************************/
2437 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param)
2439 unsigned char *buffer;
2440 unsigned char *currentCommand;
2444 dbg("%s - %d, %d", __FUNCTION__, command, param);
2446 buffer = kmalloc (10, GFP_ATOMIC);
2448 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10);
2452 currentCommand = buffer;
2454 MAKE_CMD_EXT_CMD (¤tCommand, &length,
2455 edge_port->port->number - edge_port->port->serial->minor,
2458 status = write_cmd_usb (edge_port, buffer, length);
2460 /* something bad happened, let's free up the memory */
2468 /*****************************************************************************
2470 * this function writes the given buffer out to the bulk write endpoint.
2471 *****************************************************************************/
2472 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length)
2474 struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
2479 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer);
2481 /* Allocate our next urb */
2482 urb = usb_alloc_urb (0, GFP_ATOMIC);
2487 dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
2489 usb_fill_bulk_urb (urb, edge_serial->serial->dev,
2490 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
2491 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2493 edge_port->commandPending = TRUE;
2494 status = usb_submit_urb(urb, GFP_ATOMIC);
2497 /* something went wrong */
2498 dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__, status);
2505 // wait for command to finish
2506 timeout = COMMAND_TIMEOUT;
2508 while (timeout && edge_port->commandPending == TRUE) {
2509 timeout = interruptible_sleep_on_timeout (&edge_port->wait_command, timeout);
2512 if (edge_port->commandPending == TRUE) {
2513 /* command timed out */
2514 dbg("%s - command timed out", __FUNCTION__);
2522 /*****************************************************************************
2523 * send_cmd_write_baud_rate
2524 * this function sends the proper command to change the baud rate of the
2526 *****************************************************************************/
2527 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate)
2529 unsigned char *cmdBuffer;
2530 unsigned char *currCmd;
2534 unsigned char number = edge_port->port->number - edge_port->port->serial->minor;
2536 dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);
2538 status = calc_baud_rate_divisor (baudRate, &divisor);
2540 dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__);
2544 // Alloc memory for the string of commands.
2545 cmdBuffer = kmalloc (0x100, GFP_ATOMIC);
2547 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100);
2550 currCmd = cmdBuffer;
2552 // Enable access to divisor latch
2553 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE );
2555 // Write the divisor itself
2556 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) );
2557 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) );
2559 // Restore original value to disable access to divisor latch
2560 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR);
2562 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen );
2564 /* something bad happened, let's free up the memory */
2572 /*****************************************************************************
2573 * calc_baud_rate_divisor
2574 * this function calculates the proper baud rate divisor for the specified
2576 *****************************************************************************/
2577 static int calc_baud_rate_divisor (int baudrate, int *divisor)
2583 dbg("%s - %d", __FUNCTION__, baudrate);
2585 for (i = 0; i < NUM_ENTRIES(divisor_table); i++) {
2586 if ( divisor_table[i].BaudRate == baudrate ) {
2587 *divisor = divisor_table[i].Divisor;
2592 // We have tried all of the standard baud rates
2593 // lets try to calculate the divisor for this baud rate
2594 // Make sure the baud rate is reasonable
2595 if (baudrate > 50 && baudrate < 230400) {
2597 custom = (__u16)((230400L + baudrate/2) / baudrate);
2601 dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom);
2609 /*****************************************************************************
2610 * send_cmd_write_uart_register
2611 * this function builds up a uart register message and sends to to the device.
2612 *****************************************************************************/
2613 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue)
2615 unsigned char *cmdBuffer;
2616 unsigned char *currCmd;
2617 unsigned long cmdLen = 0;
2620 dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue);
2622 // Alloc memory for the string of commands.
2623 cmdBuffer = kmalloc (0x10, GFP_ATOMIC);
2624 if (cmdBuffer == NULL ) {
2628 currCmd = cmdBuffer;
2630 // Build a cmd in the buffer to write the given register
2631 MAKE_CMD_WRITE_REG (&currCmd, &cmdLen,
2632 edge_port->port->number - edge_port->port->serial->minor,
2635 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2637 /* something bad happened, let's free up the memory */
2645 /*****************************************************************************
2646 * change_port_settings
2647 * This routine is called to set the UART on the device to match the specified
2649 *****************************************************************************/
2653 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2655 struct tty_struct *tty;
2666 dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2668 if ((!edge_port->open) &&
2669 (!edge_port->openPending)) {
2670 dbg("%s - port not opened", __FUNCTION__);
2674 tty = edge_port->port->tty;
2677 dbg("%s - no tty structures", __FUNCTION__);
2681 cflag = tty->termios->c_cflag;
2683 switch (cflag & CSIZE) {
2684 case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break;
2685 case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break;
2686 case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break;
2688 case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break;
2691 lParity = LCR_PAR_NONE;
2692 if (cflag & PARENB) {
2693 if (cflag & CMSPAR) {
2694 if (cflag & PARODD) {
2695 lParity = LCR_PAR_MARK;
2696 dbg("%s - parity = mark", __FUNCTION__);
2698 lParity = LCR_PAR_SPACE;
2699 dbg("%s - parity = space", __FUNCTION__);
2701 } else if (cflag & PARODD) {
2702 lParity = LCR_PAR_ODD;
2703 dbg("%s - parity = odd", __FUNCTION__);
2705 lParity = LCR_PAR_EVEN;
2706 dbg("%s - parity = even", __FUNCTION__);
2709 dbg("%s - parity = none", __FUNCTION__);
2712 if (cflag & CSTOPB) {
2714 dbg("%s - stop bits = 2", __FUNCTION__);
2717 dbg("%s - stop bits = 1", __FUNCTION__);
2720 /* figure out the flow control settings */
2721 rxFlow = txFlow = 0x00;
2722 if (cflag & CRTSCTS) {
2723 rxFlow |= IOSP_RX_FLOW_RTS;
2724 txFlow |= IOSP_TX_FLOW_CTS;
2725 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2727 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2730 /* if we are implementing XON/XOFF, set the start and stop character in the device */
2731 if (I_IXOFF(tty) || I_IXON(tty)) {
2732 unsigned char stop_char = STOP_CHAR(tty);
2733 unsigned char start_char = START_CHAR(tty);
2735 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XON_CHAR, start_char);
2736 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char);
2738 /* if we are implementing INBOUND XON/XOFF */
2740 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2741 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2743 dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2746 /* if we are implementing OUTBOUND XON/XOFF */
2748 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2749 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2751 dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2755 /* Set flow control to the configured value */
2756 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2757 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2760 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2761 edge_port->shadowLCR |= (lData | lParity | lStop);
2763 edge_port->validDataMask = mask;
2765 /* Send the updated LCR value to the EdgePort */
2766 status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR);
2771 /* set up the MCR register and send it to the EdgePort */
2772 edge_port->shadowMCR = MCR_MASTER_IE;
2773 if (cflag & CBAUD) {
2774 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2776 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
2781 /* Determine divisor based on baud rate */
2782 baud = tty_get_baud_rate(tty);
2784 /* pick a default, any default... */
2788 dbg("%s - baud rate = %d", __FUNCTION__, baud);
2789 status = send_cmd_write_baud_rate (edge_port, baud);
2795 /****************************************************************************
2797 * Turns a string from Unicode into ASCII.
2798 * Doesn't do a good job with any characters that are outside the normal
2799 * ASCII range, but it's only for debugging...
2800 * NOTE: expects the unicode in LE format
2801 ****************************************************************************/
2802 static void unicode_to_ascii (char *string, __le16 *unicode, int unicode_size)
2806 if (unicode_size <= 0)
2809 for (i = 0; i < unicode_size; ++i)
2810 string[i] = (char)(le16_to_cpu(unicode[i]));
2811 string[unicode_size] = 0x00;
2815 /****************************************************************************
2816 * get_manufacturing_desc
2817 * reads in the manufacturing descriptor and stores it into the serial
2819 ****************************************************************************/
2820 static void get_manufacturing_desc (struct edgeport_serial *edge_serial)
2824 dbg("getting manufacturer descriptor");
2826 response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2827 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN,
2828 (__u8 *)(&edge_serial->manuf_descriptor));
2831 dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n");
2834 dbg("**Manufacturer Descriptor");
2835 dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize);
2836 dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize);
2837 dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev);
2838 dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev);
2839 dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts);
2840 dbg(" DescDate: %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900);
2841 unicode_to_ascii (string, edge_serial->manuf_descriptor.SerialNumber, edge_serial->manuf_descriptor.SerNumLength/2-1);
2842 dbg(" SerialNumber: %s", string);
2843 unicode_to_ascii (string, edge_serial->manuf_descriptor.AssemblyNumber, edge_serial->manuf_descriptor.AssemblyNumLength/2-1);
2844 dbg(" AssemblyNumber: %s", string);
2845 unicode_to_ascii (string, edge_serial->manuf_descriptor.OemAssyNumber, edge_serial->manuf_descriptor.OemAssyNumLength/2-1);
2846 dbg(" OemAssyNumber: %s", string);
2847 dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType);
2848 dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid);
2849 dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig);
2854 /****************************************************************************
2856 * reads in the bootloader descriptor and stores it into the serial
2858 ****************************************************************************/
2859 static void get_boot_desc (struct edgeport_serial *edge_serial)
2863 dbg("getting boot descriptor");
2865 response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2866 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN,
2867 (__u8 *)(&edge_serial->boot_descriptor));
2870 dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n");
2872 dbg("**Boot Descriptor:");
2873 dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2874 dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion);
2875 dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion);
2876 dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2877 dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2878 dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0);
2879 dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1);
2884 /****************************************************************************
2885 * load_application_firmware
2886 * This is called to load the application firmware to the device
2887 ****************************************************************************/
2888 static void load_application_firmware (struct edgeport_serial *edge_serial)
2890 struct edge_firmware_image_record *record;
2891 unsigned char *firmware;
2892 unsigned char *FirmwareImage;
2897 switch (edge_serial->product_info.iDownloadFile) {
2898 case EDGE_DOWNLOAD_FILE_I930:
2899 dbg("downloading firmware version (930) %d.%d.%d",
2900 OperationalCodeImageVersion_GEN1.MajorVersion,
2901 OperationalCodeImageVersion_GEN1.MinorVersion,
2902 OperationalCodeImageVersion_GEN1.BuildNumber);
2903 firmware = &OperationalCodeImage_GEN1[0];
2904 FirmwareImage = &OperationalCodeImage_GEN1[0];
2905 ImageSize = sizeof(OperationalCodeImage_GEN1);
2908 case EDGE_DOWNLOAD_FILE_80251:
2909 dbg("downloading firmware version (80251) %d.%d.%d",
2910 OperationalCodeImageVersion_GEN2.MajorVersion,
2911 OperationalCodeImageVersion_GEN2.MinorVersion,
2912 OperationalCodeImageVersion_GEN2.BuildNumber);
2913 firmware = &OperationalCodeImage_GEN2[0];
2914 FirmwareImage = &OperationalCodeImage_GEN2[0];
2915 ImageSize = sizeof(OperationalCodeImage_GEN2);
2918 case EDGE_DOWNLOAD_FILE_NONE:
2919 dbg ("No download file specified, skipping download\n");
2928 record = (struct edge_firmware_image_record *)firmware;
2929 response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
2931 dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len));
2934 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
2935 if (firmware >= &FirmwareImage[ImageSize]) {
2940 dbg("sending exec_dl_code");
2941 response = usb_control_msg (edge_serial->serial->dev,
2942 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2943 USB_REQUEST_ION_EXEC_DL_CODE,
2944 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2950 /****************************************************************************
2952 ****************************************************************************/
2953 static int edge_startup (struct usb_serial *serial)
2955 struct edgeport_serial *edge_serial;
2956 struct edgeport_port *edge_port;
2957 struct usb_device *dev;
2962 /* create our private serial structure */
2963 edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
2964 if (edge_serial == NULL) {
2965 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2968 memset (edge_serial, 0, sizeof(struct edgeport_serial));
2969 spin_lock_init(&edge_serial->es_lock);
2970 edge_serial->serial = serial;
2971 usb_set_serial_data(serial, edge_serial);
2973 /* get the name for the device from the device */
2974 if ( (i = get_string(dev, dev->descriptor.iManufacturer, &edge_serial->name[0])) != 0) {
2975 edge_serial->name[i-1] = ' ';
2978 get_string(dev, dev->descriptor.iProduct, &edge_serial->name[i]);
2980 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2982 /* get the manufacturing descriptor for this device */
2983 get_manufacturing_desc (edge_serial);
2985 /* get the boot descriptor */
2986 get_boot_desc (edge_serial);
2988 get_product_info(edge_serial);
2990 /* set the number of ports from the manufacturing description */
2991 /* serial->num_ports = serial->product_info.NumPorts; */
2992 if (edge_serial->product_info.NumPorts != serial->num_ports) {
2993 warn("%s - Device Reported %d serial ports vs core "
2994 "thinking we have %d ports, email greg@kroah.com this info.",
2995 __FUNCTION__, edge_serial->product_info.NumPorts,
2999 dbg("%s - time 1 %ld", __FUNCTION__, jiffies);
3001 /* now load the application firmware into this device */
3002 load_application_firmware (edge_serial);
3004 dbg("%s - time 2 %ld", __FUNCTION__, jiffies);
3006 /* Check current Edgeport EEPROM and update if necessary */
3007 update_edgeport_E2PROM (edge_serial);
3009 dbg("%s - time 3 %ld", __FUNCTION__, jiffies);
3011 /* set the configuration to use #1 */
3012 // dbg("set_configuration 1");
3013 // usb_set_configuration (dev, 1);
3015 /* we set up the pointers to the endpoints in the edge_open function,
3016 * as the structures aren't created yet. */
3018 /* set up our port private structures */
3019 for (i = 0; i < serial->num_ports; ++i) {
3020 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
3021 if (edge_port == NULL) {
3022 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
3023 usb_set_serial_data(serial, NULL);
3027 memset (edge_port, 0, sizeof(struct edgeport_port));
3028 spin_lock_init(&edge_port->ep_lock);
3029 edge_port->port = serial->port[i];
3030 usb_set_serial_port_data(serial->port[i], edge_port);
3037 /****************************************************************************
3039 * This function is called whenever the device is removed from the usb bus.
3040 ****************************************************************************/
3041 static void edge_shutdown (struct usb_serial *serial)
3045 dbg("%s", __FUNCTION__);
3047 /* stop reads and writes on all ports */
3048 for (i=0; i < serial->num_ports; ++i) {
3049 kfree (usb_get_serial_port_data(serial->port[i]));
3050 usb_set_serial_port_data(serial->port[i], NULL);
3052 kfree (usb_get_serial_data(serial));
3053 usb_set_serial_data(serial, NULL);
3057 /****************************************************************************
3059 * This is called by the module subsystem, or on startup to initialize us
3060 ****************************************************************************/
3061 static int __init edgeport_init(void)
3065 retval = usb_serial_register(&edgeport_2port_device);
3067 goto failed_2port_device_register;
3068 retval = usb_serial_register(&edgeport_4port_device);
3070 goto failed_4port_device_register;
3071 retval = usb_serial_register(&edgeport_8port_device);
3073 goto failed_8port_device_register;
3074 retval = usb_register(&io_driver);
3076 goto failed_usb_register;
3077 info(DRIVER_DESC " " DRIVER_VERSION);
3080 failed_usb_register:
3081 usb_serial_deregister(&edgeport_8port_device);
3082 failed_8port_device_register:
3083 usb_serial_deregister(&edgeport_4port_device);
3084 failed_4port_device_register:
3085 usb_serial_deregister(&edgeport_2port_device);
3086 failed_2port_device_register:
3091 /****************************************************************************
3093 * Called when the driver is about to be unloaded.
3094 ****************************************************************************/
3095 static void __exit edgeport_exit (void)
3097 usb_deregister (&io_driver);
3098 usb_serial_deregister (&edgeport_2port_device);
3099 usb_serial_deregister (&edgeport_4port_device);
3100 usb_serial_deregister (&edgeport_8port_device);
3103 module_init(edgeport_init);
3104 module_exit(edgeport_exit);
3106 /* Module information */
3107 MODULE_AUTHOR( DRIVER_AUTHOR );
3108 MODULE_DESCRIPTION( DRIVER_DESC );
3109 MODULE_LICENSE("GPL");
3111 module_param(debug, bool, S_IRUGO | S_IWUSR);
3112 MODULE_PARM_DESC(debug, "Debug enabled or not");
3114 module_param(low_latency, bool, S_IRUGO | S_IWUSR);
3115 MODULE_PARM_DESC(debug, "Low latency enabled or not");