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 #include <linux/kernel.h>
33 #include <linux/jiffies.h>
34 #include <linux/errno.h>
35 #include <linux/slab.h>
36 #include <linux/tty.h>
37 #include <linux/tty_driver.h>
38 #include <linux/tty_flip.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/serial.h>
42 #include <linux/ioctl.h>
43 #include <linux/wait.h>
44 #include <linux/firmware.h>
45 #include <linux/ihex.h>
46 #include <linux/uaccess.h>
47 #include <linux/usb.h>
48 #include <linux/usb/serial.h>
49 #include "io_edgeport.h"
50 #include "io_ionsp.h" /* info for the iosp messages */
51 #include "io_16654.h" /* 16654 UART defines */
53 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
54 #define DRIVER_DESC "Edgeport USB Serial Driver"
56 #define MAX_NAME_LEN 64
58 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
60 /* receive port state */
62 EXPECT_HDR1 = 0, /* Expect header byte 1 */
63 EXPECT_HDR2 = 1, /* Expect header byte 2 */
64 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
65 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
70 * This Transmit queue is an extension of the edgeport Rx buffer.
71 * The maximum amount of data buffered in both the edgeport
72 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
75 unsigned int head; /* index to head pointer (write) */
76 unsigned int tail; /* index to tail pointer (read) */
77 unsigned int count; /* Bytes in queue */
78 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
79 unsigned char *fifo; /* allocated Buffer */
82 /* This structure holds all of the local port information */
83 struct edgeport_port {
84 __u16 txCredits; /* our current credits for this port */
85 __u16 maxTxCredits; /* the max size of the port */
87 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
88 struct urb *write_urb; /* write URB for this port */
89 bool write_in_progress; /* 'true' while a write URB is outstanding */
92 __u8 shadowLCR; /* last LCR value received */
93 __u8 shadowMCR; /* last MCR value received */
94 __u8 shadowMSR; /* last MSR value received */
95 __u8 shadowLSR; /* last LSR value received */
96 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
97 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
105 bool chaseResponsePending;
107 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
108 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
109 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
111 struct usb_serial_port *port; /* loop back to the owner of this object */
115 /* This structure holds all of the individual device information */
116 struct edgeport_serial {
117 char name[MAX_NAME_LEN+2]; /* string name of this device */
119 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
120 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
121 struct edgeport_product_info product_info; /* Product Info */
122 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
123 int is_epic; /* flag if EPiC device or not */
125 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
126 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
127 struct urb *interrupt_read_urb; /* our interrupt urb */
129 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
130 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
131 struct urb *read_urb; /* our bulk read urb */
132 bool read_in_progress;
135 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
137 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
139 enum RXSTATE rxState; /* the current state of the bulk receive processor */
140 __u8 rxHeader1; /* receive header byte 1 */
141 __u8 rxHeader2; /* receive header byte 2 */
142 __u8 rxHeader3; /* receive header byte 3 */
143 __u8 rxPort; /* the port that we are currently receiving data for */
144 __u8 rxStatusCode; /* the receive status code */
145 __u8 rxStatusParam; /* the receive status paramater */
146 __s16 rxBytesRemaining; /* the number of port bytes left to read */
147 struct usb_serial *serial; /* loop back to the owner of this object */
150 /* baud rate information */
151 struct divisor_table_entry {
157 * Define table of divisors for Rev A EdgePort/4 hardware
158 * These assume a 3.6864MHz crystal, the standard /16, and
162 static const struct divisor_table_entry divisor_table[] = {
165 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
166 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
184 /* Number of outstanding Command Write Urbs */
185 static atomic_t CmdUrbs = ATOMIC_INIT(0);
188 /* local function prototypes */
190 /* function prototypes for all URB callbacks */
191 static void edge_interrupt_callback(struct urb *urb);
192 static void edge_bulk_in_callback(struct urb *urb);
193 static void edge_bulk_out_data_callback(struct urb *urb);
194 static void edge_bulk_out_cmd_callback(struct urb *urb);
196 /* function prototypes for the usbserial callbacks */
197 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
198 static void edge_close(struct usb_serial_port *port);
199 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
200 const unsigned char *buf, int count);
201 static int edge_write_room(struct tty_struct *tty);
202 static int edge_chars_in_buffer(struct tty_struct *tty);
203 static void edge_throttle(struct tty_struct *tty);
204 static void edge_unthrottle(struct tty_struct *tty);
205 static void edge_set_termios(struct tty_struct *tty,
206 struct usb_serial_port *port,
207 struct ktermios *old_termios);
208 static int edge_ioctl(struct tty_struct *tty,
209 unsigned int cmd, unsigned long arg);
210 static void edge_break(struct tty_struct *tty, int break_state);
211 static int edge_tiocmget(struct tty_struct *tty);
212 static int edge_tiocmset(struct tty_struct *tty,
213 unsigned int set, unsigned int clear);
214 static int edge_startup(struct usb_serial *serial);
215 static void edge_disconnect(struct usb_serial *serial);
216 static void edge_release(struct usb_serial *serial);
217 static int edge_port_probe(struct usb_serial_port *port);
218 static int edge_port_remove(struct usb_serial_port *port);
220 #include "io_tables.h" /* all of the devices that this driver supports */
222 /* function prototypes for all of our local functions */
224 static void process_rcvd_data(struct edgeport_serial *edge_serial,
225 unsigned char *buffer, __u16 bufferLength);
226 static void process_rcvd_status(struct edgeport_serial *edge_serial,
227 __u8 byte2, __u8 byte3);
228 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
230 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
231 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
232 __u8 lsr, __u8 data);
233 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
235 static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor);
236 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
238 static void change_port_settings(struct tty_struct *tty,
239 struct edgeport_port *edge_port,
240 struct ktermios *old_termios);
241 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
242 __u8 regNum, __u8 regValue);
243 static int write_cmd_usb(struct edgeport_port *edge_port,
244 unsigned char *buffer, int writeLength);
245 static void send_more_port_data(struct edgeport_serial *edge_serial,
246 struct edgeport_port *edge_port);
248 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
249 __u16 length, const __u8 *data);
250 static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
251 __u16 length, __u8 *data);
252 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
253 __u16 length, const __u8 *data);
254 static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
255 static void get_boot_desc(struct edgeport_serial *edge_serial);
256 static void load_application_firmware(struct edgeport_serial *edge_serial);
258 static void unicode_to_ascii(char *string, int buflen,
259 __le16 *unicode, int unicode_size);
262 /* ************************************************************************ */
263 /* ************************************************************************ */
264 /* ************************************************************************ */
265 /* ************************************************************************ */
267 /************************************************************************
269 * update_edgeport_E2PROM() Compare current versions of *
270 * Boot ROM and Manufacture *
271 * Descriptors with versions *
272 * embedded in this driver *
274 ************************************************************************/
275 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
277 struct device *dev = &edge_serial->serial->dev->dev;
280 __u8 BootMajorVersion;
281 __u8 BootMinorVersion;
282 __u16 BootBuildNumber;
284 const struct ihex_binrec *rec;
285 const struct firmware *fw;
289 switch (edge_serial->product_info.iDownloadFile) {
290 case EDGE_DOWNLOAD_FILE_I930:
291 fw_name = "/*(DEBLOBBED)*/";
293 case EDGE_DOWNLOAD_FILE_80251:
294 fw_name = "/*(DEBLOBBED)*/";
300 response = reject_firmware(&fw, fw_name,
301 &edge_serial->serial->dev->dev);
303 dev_err(dev, "Failed to load image \"%s\" err %d\n",
308 rec = (const struct ihex_binrec *)fw->data;
309 BootMajorVersion = rec->data[0];
310 BootMinorVersion = rec->data[1];
311 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
313 /* Check Boot Image Version */
314 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
315 (edge_serial->boot_descriptor.MinorVersion << 16) +
316 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
318 BootNewVer = (BootMajorVersion << 24) +
319 (BootMinorVersion << 16) +
322 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n",
323 edge_serial->boot_descriptor.MajorVersion,
324 edge_serial->boot_descriptor.MinorVersion,
325 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
328 if (BootNewVer > BootCurVer) {
329 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
330 edge_serial->boot_descriptor.MajorVersion,
331 edge_serial->boot_descriptor.MinorVersion,
332 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
333 BootMajorVersion, BootMinorVersion, BootBuildNumber);
335 dev_dbg(dev, "Downloading new Boot Image\n");
337 for (rec = ihex_next_binrec(rec); rec;
338 rec = ihex_next_binrec(rec)) {
339 Bootaddr = be32_to_cpu(rec->addr);
340 response = rom_write(edge_serial->serial,
343 be16_to_cpu(rec->len),
346 dev_err(&edge_serial->serial->dev->dev,
347 "rom_write failed (%x, %x, %d)\n",
348 Bootaddr >> 16, Bootaddr & 0xFFFF,
349 be16_to_cpu(rec->len));
354 dev_dbg(dev, "Boot Image -- already up to date\n");
356 release_firmware(fw);
360 /************************************************************************
362 * Get string descriptor from device
364 ************************************************************************/
365 static int get_string_desc(struct usb_device *dev, int Id,
366 struct usb_string_descriptor **pRetDesc)
368 struct usb_string_descriptor StringDesc;
369 struct usb_string_descriptor *pStringDesc;
371 dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id);
373 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
377 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
381 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
382 StringDesc.bLength)) {
387 *pRetDesc = pStringDesc;
392 static void dump_product_info(struct edgeport_serial *edge_serial,
393 struct edgeport_product_info *product_info)
395 struct device *dev = &edge_serial->serial->dev->dev;
397 /* Dump Product Info structure */
398 dev_dbg(dev, "**Product Information:\n");
399 dev_dbg(dev, " ProductId %x\n", product_info->ProductId);
400 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts);
401 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer);
402 dev_dbg(dev, " IsServer %d\n", product_info->IsServer);
403 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232);
404 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422);
405 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485);
406 dev_dbg(dev, " RomSize %d\n", product_info->RomSize);
407 dev_dbg(dev, " RamSize %d\n", product_info->RamSize);
408 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev);
409 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev);
410 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n",
411 product_info->BootMajorVersion,
412 product_info->BootMinorVersion,
413 le16_to_cpu(product_info->BootBuildNumber));
414 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n",
415 product_info->FirmwareMajorVersion,
416 product_info->FirmwareMinorVersion,
417 le16_to_cpu(product_info->FirmwareBuildNumber));
418 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n",
419 product_info->ManufactureDescDate[0],
420 product_info->ManufactureDescDate[1],
421 product_info->ManufactureDescDate[2]+1900);
422 dev_dbg(dev, " iDownloadFile 0x%x\n",
423 product_info->iDownloadFile);
424 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer);
427 static void get_product_info(struct edgeport_serial *edge_serial)
429 struct edgeport_product_info *product_info = &edge_serial->product_info;
431 memset(product_info, 0, sizeof(struct edgeport_product_info));
433 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
434 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
435 product_info->ProdInfoVer = 0;
437 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
438 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
439 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
440 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
442 product_info->BootMajorVersion =
443 edge_serial->boot_descriptor.MajorVersion;
444 product_info->BootMinorVersion =
445 edge_serial->boot_descriptor.MinorVersion;
446 product_info->BootBuildNumber =
447 edge_serial->boot_descriptor.BuildNumber;
449 memcpy(product_info->ManufactureDescDate,
450 edge_serial->manuf_descriptor.DescDate,
451 sizeof(edge_serial->manuf_descriptor.DescDate));
453 /* check if this is 2nd generation hardware */
454 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
455 & ION_DEVICE_ID_80251_NETCHIP)
456 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
458 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
460 /* Determine Product type and set appropriate flags */
461 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
462 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
463 case ION_DEVICE_ID_EDGEPORT_4T:
464 case ION_DEVICE_ID_EDGEPORT_4:
465 case ION_DEVICE_ID_EDGEPORT_2:
466 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
467 case ION_DEVICE_ID_EDGEPORT_8:
468 case ION_DEVICE_ID_EDGEPORT_421:
469 case ION_DEVICE_ID_EDGEPORT_21:
470 case ION_DEVICE_ID_EDGEPORT_2_DIN:
471 case ION_DEVICE_ID_EDGEPORT_4_DIN:
472 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
473 product_info->IsRS232 = 1;
476 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
477 product_info->IsRS422 = 1;
478 product_info->IsRS485 = 1;
481 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
482 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
483 product_info->IsRS422 = 1;
487 dump_product_info(edge_serial, product_info);
490 static int get_epic_descriptor(struct edgeport_serial *ep)
493 struct usb_serial *serial = ep->serial;
494 struct edgeport_product_info *product_info = &ep->product_info;
495 struct edge_compatibility_descriptor *epic;
496 struct edge_compatibility_bits *bits;
497 struct device *dev = &serial->dev->dev;
501 epic = kmalloc(sizeof(*epic), GFP_KERNEL);
505 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
506 USB_REQUEST_ION_GET_EPIC_DESC,
510 if (result == sizeof(*epic)) {
512 memcpy(&ep->epic_descriptor, epic, sizeof(*epic));
513 memset(product_info, 0, sizeof(struct edgeport_product_info));
515 product_info->NumPorts = epic->NumPorts;
516 product_info->ProdInfoVer = 0;
517 product_info->FirmwareMajorVersion = epic->MajorVersion;
518 product_info->FirmwareMinorVersion = epic->MinorVersion;
519 product_info->FirmwareBuildNumber = epic->BuildNumber;
520 product_info->iDownloadFile = epic->iDownloadFile;
521 product_info->EpicVer = epic->EpicVer;
522 product_info->Epic = epic->Supports;
523 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
524 dump_product_info(ep, product_info);
526 bits = &ep->epic_descriptor.Supports;
527 dev_dbg(dev, "**EPIC descriptor:\n");
528 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE");
529 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE");
530 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE");
531 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE");
532 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
533 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
534 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE");
535 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE");
536 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
537 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE");
538 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE");
539 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
540 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE");
543 } else if (result >= 0) {
544 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n",
555 /************************************************************************/
556 /************************************************************************/
557 /* U S B C A L L B A C K F U N C T I O N S */
558 /* U S B C A L L B A C K F U N C T I O N S */
559 /************************************************************************/
560 /************************************************************************/
562 /*****************************************************************************
563 * edge_interrupt_callback
564 * this is the callback function for when we have received data on the
565 * interrupt endpoint.
566 *****************************************************************************/
567 static void edge_interrupt_callback(struct urb *urb)
569 struct edgeport_serial *edge_serial = urb->context;
571 struct edgeport_port *edge_port;
572 struct usb_serial_port *port;
573 unsigned char *data = urb->transfer_buffer;
574 int length = urb->actual_length;
581 int status = urb->status;
590 /* this urb is terminated, clean up */
591 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
594 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
598 dev = &edge_serial->serial->dev->dev;
600 /* process this interrupt-read even if there are no ports open */
602 usb_serial_debug_data(dev, __func__, length, data);
605 bytes_avail = data[0] | (data[1] << 8);
607 spin_lock_irqsave(&edge_serial->es_lock, flags);
608 edge_serial->rxBytesAvail += bytes_avail;
610 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
611 __func__, bytes_avail,
612 edge_serial->rxBytesAvail,
613 edge_serial->read_in_progress);
615 if (edge_serial->rxBytesAvail > 0 &&
616 !edge_serial->read_in_progress) {
617 dev_dbg(dev, "%s - posting a read\n", __func__);
618 edge_serial->read_in_progress = true;
620 /* we have pending bytes on the
621 bulk in pipe, send a request */
622 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
625 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
627 edge_serial->read_in_progress = false;
630 spin_unlock_irqrestore(&edge_serial->es_lock,
634 /* grab the txcredits for the ports if available */
637 while ((position < length - 1) &&
638 (portNumber < edge_serial->serial->num_ports)) {
639 txCredits = data[position] | (data[position+1] << 8);
641 port = edge_serial->serial->port[portNumber];
642 edge_port = usb_get_serial_port_data(port);
643 if (edge_port && edge_port->open) {
644 spin_lock_irqsave(&edge_port->ep_lock,
646 edge_port->txCredits += txCredits;
647 spin_unlock_irqrestore(&edge_port->ep_lock,
649 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
650 __func__, portNumber,
651 edge_port->txCredits);
653 /* tell the tty driver that something
655 tty_port_tty_wakeup(&edge_port->port->port);
656 /* Since we have more credit, check
657 if more data can be sent */
658 send_more_port_data(edge_serial,
668 result = usb_submit_urb(urb, GFP_ATOMIC);
670 dev_err(&urb->dev->dev,
671 "%s - Error %d submitting control urb\n",
676 /*****************************************************************************
677 * edge_bulk_in_callback
678 * this is the callback function for when we have received data on the
680 *****************************************************************************/
681 static void edge_bulk_in_callback(struct urb *urb)
683 struct edgeport_serial *edge_serial = urb->context;
685 unsigned char *data = urb->transfer_buffer;
687 __u16 raw_data_length;
688 int status = urb->status;
692 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
694 edge_serial->read_in_progress = false;
698 if (urb->actual_length == 0) {
699 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
700 edge_serial->read_in_progress = false;
704 dev = &edge_serial->serial->dev->dev;
705 raw_data_length = urb->actual_length;
707 usb_serial_debug_data(dev, __func__, raw_data_length, data);
709 spin_lock_irqsave(&edge_serial->es_lock, flags);
711 /* decrement our rxBytes available by the number that we just got */
712 edge_serial->rxBytesAvail -= raw_data_length;
714 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
715 raw_data_length, edge_serial->rxBytesAvail);
717 process_rcvd_data(edge_serial, data, urb->actual_length);
719 /* check to see if there's any more data for us to read */
720 if (edge_serial->rxBytesAvail > 0) {
721 dev_dbg(dev, "%s - posting a read\n", __func__);
722 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
725 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
727 edge_serial->read_in_progress = false;
730 edge_serial->read_in_progress = false;
733 spin_unlock_irqrestore(&edge_serial->es_lock, flags);
737 /*****************************************************************************
738 * edge_bulk_out_data_callback
739 * this is the callback function for when we have finished sending
740 * serial data on the bulk out endpoint.
741 *****************************************************************************/
742 static void edge_bulk_out_data_callback(struct urb *urb)
744 struct edgeport_port *edge_port = urb->context;
745 int status = urb->status;
748 dev_dbg(&urb->dev->dev,
749 "%s - nonzero write bulk status received: %d\n",
754 tty_port_tty_wakeup(&edge_port->port->port);
756 /* Release the Write URB */
757 edge_port->write_in_progress = false;
759 /* Check if more data needs to be sent */
760 send_more_port_data((struct edgeport_serial *)
761 (usb_get_serial_data(edge_port->port->serial)), edge_port);
765 /*****************************************************************************
767 * this is the callback function for when we have finished sending a
768 * command on the bulk out endpoint.
769 *****************************************************************************/
770 static void edge_bulk_out_cmd_callback(struct urb *urb)
772 struct edgeport_port *edge_port = urb->context;
773 int status = urb->status;
775 atomic_dec(&CmdUrbs);
776 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n",
777 __func__, urb, atomic_read(&CmdUrbs));
780 /* clean up the transfer buffer */
781 kfree(urb->transfer_buffer);
783 /* Free the command urb */
787 dev_dbg(&urb->dev->dev,
788 "%s - nonzero write bulk status received: %d\n",
793 /* tell the tty driver that something has changed */
795 tty_port_tty_wakeup(&edge_port->port->port);
797 /* we have completed the command */
798 edge_port->commandPending = false;
799 wake_up(&edge_port->wait_command);
803 /*****************************************************************************
804 * Driver tty interface functions
805 *****************************************************************************/
807 /*****************************************************************************
809 * this function is called by the tty driver when a port is opened
810 * If successful, we return 0
811 * Otherwise we return a negative error number.
812 *****************************************************************************/
813 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
815 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
816 struct device *dev = &port->dev;
817 struct usb_serial *serial;
818 struct edgeport_serial *edge_serial;
821 if (edge_port == NULL)
824 /* see if we've set up our endpoint info yet (can't set it up
825 in edge_startup as the structures were not set up at that time.) */
826 serial = port->serial;
827 edge_serial = usb_get_serial_data(serial);
828 if (edge_serial == NULL)
830 if (edge_serial->interrupt_in_buffer == NULL) {
831 struct usb_serial_port *port0 = serial->port[0];
833 /* not set up yet, so do it now */
834 edge_serial->interrupt_in_buffer =
835 port0->interrupt_in_buffer;
836 edge_serial->interrupt_in_endpoint =
837 port0->interrupt_in_endpointAddress;
838 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
839 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
840 edge_serial->bulk_in_endpoint =
841 port0->bulk_in_endpointAddress;
842 edge_serial->read_urb = port0->read_urb;
843 edge_serial->bulk_out_endpoint =
844 port0->bulk_out_endpointAddress;
846 /* set up our interrupt urb */
847 usb_fill_int_urb(edge_serial->interrupt_read_urb,
849 usb_rcvintpipe(serial->dev,
850 port0->interrupt_in_endpointAddress),
851 port0->interrupt_in_buffer,
852 edge_serial->interrupt_read_urb->transfer_buffer_length,
853 edge_interrupt_callback, edge_serial,
854 edge_serial->interrupt_read_urb->interval);
856 /* set up our bulk in urb */
857 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
858 usb_rcvbulkpipe(serial->dev,
859 port0->bulk_in_endpointAddress),
860 port0->bulk_in_buffer,
861 edge_serial->read_urb->transfer_buffer_length,
862 edge_bulk_in_callback, edge_serial);
863 edge_serial->read_in_progress = false;
865 /* start interrupt read for this edgeport
866 * this interrupt will continue as long
867 * as the edgeport is connected */
868 response = usb_submit_urb(edge_serial->interrupt_read_urb,
871 dev_err(dev, "%s - Error %d submitting control urb\n",
876 /* initialize our wait queues */
877 init_waitqueue_head(&edge_port->wait_open);
878 init_waitqueue_head(&edge_port->wait_chase);
879 init_waitqueue_head(&edge_port->wait_command);
881 /* initialize our port settings */
882 edge_port->txCredits = 0; /* Can't send any data yet */
883 /* Must always set this bit to enable ints! */
884 edge_port->shadowMCR = MCR_MASTER_IE;
885 edge_port->chaseResponsePending = false;
887 /* send a open port command */
888 edge_port->openPending = true;
889 edge_port->open = false;
890 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
893 dev_err(dev, "%s - error sending open port command\n", __func__);
894 edge_port->openPending = false;
898 /* now wait for the port to be completely opened */
899 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
902 if (!edge_port->open) {
904 dev_dbg(dev, "%s - open timedout\n", __func__);
905 edge_port->openPending = false;
909 /* create the txfifo */
910 edge_port->txfifo.head = 0;
911 edge_port->txfifo.tail = 0;
912 edge_port->txfifo.count = 0;
913 edge_port->txfifo.size = edge_port->maxTxCredits;
914 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
916 if (!edge_port->txfifo.fifo) {
921 /* Allocate a URB for the write */
922 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
923 edge_port->write_in_progress = false;
925 if (!edge_port->write_urb) {
930 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
931 __func__, edge_port->maxTxCredits);
937 /************************************************************************
939 * block_until_chase_response
941 * This function will block the close until one of the following:
942 * 1. Response to our Chase comes from Edgeport
943 * 2. A timeout of 10 seconds without activity has expired
944 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
946 ************************************************************************/
947 static void block_until_chase_response(struct edgeport_port *edge_port)
949 struct device *dev = &edge_port->port->dev;
956 /* Save Last credits */
957 lastCredits = edge_port->txCredits;
959 /* Did we get our Chase response */
960 if (!edge_port->chaseResponsePending) {
961 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
963 /* did we get all of our credit back? */
964 if (edge_port->txCredits == edge_port->maxTxCredits) {
965 dev_dbg(dev, "%s - Got all credits\n", __func__);
970 /* Block the thread for a while */
971 prepare_to_wait(&edge_port->wait_chase, &wait,
972 TASK_UNINTERRUPTIBLE);
973 schedule_timeout(timeout);
974 finish_wait(&edge_port->wait_chase, &wait);
976 if (lastCredits == edge_port->txCredits) {
977 /* No activity.. count down. */
980 edge_port->chaseResponsePending = false;
981 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
985 /* Reset timeout value back to 10 seconds */
986 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
987 lastCredits, edge_port->txCredits);
994 /************************************************************************
996 * block_until_tx_empty
998 * This function will block the close until one of the following:
1000 * 2. The edgeport has stopped
1001 * 3. A timeout of 3 seconds without activity has expired
1003 ************************************************************************/
1004 static void block_until_tx_empty(struct edgeport_port *edge_port)
1006 struct device *dev = &edge_port->port->dev;
1008 struct TxFifo *fifo = &edge_port->txfifo;
1010 int timeout = HZ/10;
1014 /* Save Last count */
1015 lastCount = fifo->count;
1017 /* Is the Edgeport Buffer empty? */
1018 if (lastCount == 0) {
1019 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1023 /* Block the thread for a while */
1024 prepare_to_wait(&edge_port->wait_chase, &wait,
1025 TASK_UNINTERRUPTIBLE);
1026 schedule_timeout(timeout);
1027 finish_wait(&edge_port->wait_chase, &wait);
1029 dev_dbg(dev, "%s wait\n", __func__);
1031 if (lastCount == fifo->count) {
1032 /* No activity.. count down. */
1035 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1039 /* Reset timeout value back to seconds */
1046 /*****************************************************************************
1048 * this function is called by the tty driver when a port is closed
1049 *****************************************************************************/
1050 static void edge_close(struct usb_serial_port *port)
1052 struct edgeport_serial *edge_serial;
1053 struct edgeport_port *edge_port;
1056 edge_serial = usb_get_serial_data(port->serial);
1057 edge_port = usb_get_serial_port_data(port);
1058 if (edge_serial == NULL || edge_port == NULL)
1061 /* block until tx is empty */
1062 block_until_tx_empty(edge_port);
1064 edge_port->closePending = true;
1066 if ((!edge_serial->is_epic) ||
1067 ((edge_serial->is_epic) &&
1068 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1069 /* flush and chase */
1070 edge_port->chaseResponsePending = true;
1072 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1073 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1075 /* block until chase finished */
1076 block_until_chase_response(edge_port);
1078 edge_port->chaseResponsePending = false;
1081 if ((!edge_serial->is_epic) ||
1082 ((edge_serial->is_epic) &&
1083 (edge_serial->epic_descriptor.Supports.IOSPClose))) {
1084 /* close the port */
1085 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
1086 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1089 /* port->close = true; */
1090 edge_port->closePending = false;
1091 edge_port->open = false;
1092 edge_port->openPending = false;
1094 usb_kill_urb(edge_port->write_urb);
1096 if (edge_port->write_urb) {
1097 /* if this urb had a transfer buffer already
1098 (old transfer) free it */
1099 kfree(edge_port->write_urb->transfer_buffer);
1100 usb_free_urb(edge_port->write_urb);
1101 edge_port->write_urb = NULL;
1103 kfree(edge_port->txfifo.fifo);
1104 edge_port->txfifo.fifo = NULL;
1107 /*****************************************************************************
1109 * this function is called by the tty driver when data should be written
1111 * If successful, we return the number of bytes written, otherwise we
1112 * return a negative error number.
1113 *****************************************************************************/
1114 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1115 const unsigned char *data, int count)
1117 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1118 struct TxFifo *fifo;
1123 unsigned long flags;
1125 if (edge_port == NULL)
1128 /* get a pointer to the Tx fifo */
1129 fifo = &edge_port->txfifo;
1131 spin_lock_irqsave(&edge_port->ep_lock, flags);
1133 /* calculate number of bytes to put in fifo */
1134 copySize = min((unsigned int)count,
1135 (edge_port->txCredits - fifo->count));
1137 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1138 __func__, count, edge_port->txCredits - fifo->count, copySize);
1140 /* catch writes of 0 bytes which the tty driver likes to give us,
1141 and when txCredits is empty */
1142 if (copySize == 0) {
1143 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1148 * since we can never overflow the buffer we do not have to check for a
1151 * the copy is done is two parts -- first fill to the end of the buffer
1152 * then copy the reset from the start of the buffer
1154 bytesleft = fifo->size - fifo->head;
1155 firsthalf = min(bytesleft, copySize);
1156 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1157 firsthalf, bytesleft);
1159 /* now copy our data */
1160 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1161 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1163 /* update the index and size */
1164 fifo->head += firsthalf;
1165 fifo->count += firsthalf;
1167 /* wrap the index */
1168 if (fifo->head == fifo->size)
1171 secondhalf = copySize-firsthalf;
1174 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1175 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1176 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
1177 /* update the index and size */
1178 fifo->count += secondhalf;
1179 fifo->head += secondhalf;
1180 /* No need to check for wrap since we can not get to end of
1181 * the fifo in this part
1186 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1188 send_more_port_data((struct edgeport_serial *)
1189 usb_get_serial_data(port->serial), edge_port);
1191 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1192 __func__, copySize, edge_port->txCredits, fifo->count);
1198 /************************************************************************
1200 * send_more_port_data()
1202 * This routine attempts to write additional UART transmit data
1203 * to a port over the USB bulk pipe. It is called (1) when new
1204 * data has been written to a port's TxBuffer from higher layers
1205 * (2) when the peripheral sends us additional TxCredits indicating
1206 * that it can accept more Tx data for a given port; and (3) when
1207 * a bulk write completes successfully and we want to see if we
1208 * can transmit more.
1210 ************************************************************************/
1211 static void send_more_port_data(struct edgeport_serial *edge_serial,
1212 struct edgeport_port *edge_port)
1214 struct TxFifo *fifo = &edge_port->txfifo;
1215 struct device *dev = &edge_port->port->dev;
1217 unsigned char *buffer;
1223 unsigned long flags;
1225 spin_lock_irqsave(&edge_port->ep_lock, flags);
1227 if (edge_port->write_in_progress ||
1229 (fifo->count == 0)) {
1230 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1231 __func__, fifo->count, edge_port->write_in_progress);
1235 /* since the amount of data in the fifo will always fit into the
1236 * edgeport buffer we do not need to check the write length
1238 * Do we have enough credits for this port to make it worthwhile
1239 * to bother queueing a write. If it's too small, say a few bytes,
1240 * it's better to wait for more credits so we can do a larger write.
1242 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1243 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1244 __func__, fifo->count, edge_port->txCredits);
1248 /* lock this write */
1249 edge_port->write_in_progress = true;
1251 /* get a pointer to the write_urb */
1252 urb = edge_port->write_urb;
1254 /* make sure transfer buffer is freed */
1255 kfree(urb->transfer_buffer);
1256 urb->transfer_buffer = NULL;
1258 /* build the data header for the buffer and port that we are about
1260 count = fifo->count;
1261 buffer = kmalloc(count+2, GFP_ATOMIC);
1263 edge_port->write_in_progress = false;
1266 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1267 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1269 /* now copy our data */
1270 bytesleft = fifo->size - fifo->tail;
1271 firsthalf = min(bytesleft, count);
1272 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1273 fifo->tail += firsthalf;
1274 fifo->count -= firsthalf;
1275 if (fifo->tail == fifo->size)
1278 secondhalf = count-firsthalf;
1280 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1282 fifo->tail += secondhalf;
1283 fifo->count -= secondhalf;
1287 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1289 /* fill up the urb with all of our data and submit it */
1290 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1291 usb_sndbulkpipe(edge_serial->serial->dev,
1292 edge_serial->bulk_out_endpoint),
1294 edge_bulk_out_data_callback, edge_port);
1296 /* decrement the number of credits we have by the number we just sent */
1297 edge_port->txCredits -= count;
1298 edge_port->port->icount.tx += count;
1300 status = usb_submit_urb(urb, GFP_ATOMIC);
1302 /* something went wrong */
1303 dev_err_console(edge_port->port,
1304 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1306 edge_port->write_in_progress = false;
1308 /* revert the credits as something bad happened. */
1309 edge_port->txCredits += count;
1310 edge_port->port->icount.tx -= count;
1312 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1313 __func__, count, edge_port->txCredits, fifo->count);
1316 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1320 /*****************************************************************************
1322 * this function is called by the tty driver when it wants to know how
1323 * many bytes of data we can accept for a specific port. If successful,
1324 * we return the amount of room that we have for this port (the txCredits)
1325 * otherwise we return a negative error number.
1326 *****************************************************************************/
1327 static int edge_write_room(struct tty_struct *tty)
1329 struct usb_serial_port *port = tty->driver_data;
1330 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1332 unsigned long flags;
1334 if (edge_port == NULL)
1336 if (edge_port->closePending)
1339 if (!edge_port->open) {
1340 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1344 /* total of both buffers is still txCredit */
1345 spin_lock_irqsave(&edge_port->ep_lock, flags);
1346 room = edge_port->txCredits - edge_port->txfifo.count;
1347 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1349 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1354 /*****************************************************************************
1355 * edge_chars_in_buffer
1356 * this function is called by the tty driver when it wants to know how
1357 * many bytes of data we currently have outstanding in the port (data that
1358 * has been written, but hasn't made it out the port yet)
1359 * If successful, we return the number of bytes left to be written in the
1361 * Otherwise we return a negative error number.
1362 *****************************************************************************/
1363 static int edge_chars_in_buffer(struct tty_struct *tty)
1365 struct usb_serial_port *port = tty->driver_data;
1366 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1368 unsigned long flags;
1370 if (edge_port == NULL)
1372 if (edge_port->closePending)
1375 if (!edge_port->open) {
1376 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1380 spin_lock_irqsave(&edge_port->ep_lock, flags);
1381 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1382 edge_port->txfifo.count;
1383 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1385 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars);
1392 /*****************************************************************************
1394 * this function is called by the tty driver when it wants to stop the data
1395 * being read from the port.
1396 *****************************************************************************/
1397 static void edge_throttle(struct tty_struct *tty)
1399 struct usb_serial_port *port = tty->driver_data;
1400 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1403 if (edge_port == NULL)
1406 if (!edge_port->open) {
1407 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1411 /* if we are implementing XON/XOFF, send the stop character */
1413 unsigned char stop_char = STOP_CHAR(tty);
1414 status = edge_write(tty, port, &stop_char, 1);
1419 /* if we are implementing RTS/CTS, toggle that line */
1420 if (tty->termios.c_cflag & CRTSCTS) {
1421 edge_port->shadowMCR &= ~MCR_RTS;
1422 status = send_cmd_write_uart_register(edge_port, MCR,
1423 edge_port->shadowMCR);
1430 /*****************************************************************************
1432 * this function is called by the tty driver when it wants to resume the
1433 * data being read from the port (called after SerialThrottle is called)
1434 *****************************************************************************/
1435 static void edge_unthrottle(struct tty_struct *tty)
1437 struct usb_serial_port *port = tty->driver_data;
1438 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1441 if (edge_port == NULL)
1444 if (!edge_port->open) {
1445 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1449 /* if we are implementing XON/XOFF, send the start character */
1451 unsigned char start_char = START_CHAR(tty);
1452 status = edge_write(tty, port, &start_char, 1);
1456 /* if we are implementing RTS/CTS, toggle that line */
1457 if (tty->termios.c_cflag & CRTSCTS) {
1458 edge_port->shadowMCR |= MCR_RTS;
1459 send_cmd_write_uart_register(edge_port, MCR,
1460 edge_port->shadowMCR);
1465 /*****************************************************************************
1467 * this function is called by the tty driver when it wants to change
1468 * the termios structure
1469 *****************************************************************************/
1470 static void edge_set_termios(struct tty_struct *tty,
1471 struct usb_serial_port *port, struct ktermios *old_termios)
1473 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1476 cflag = tty->termios.c_cflag;
1477 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag);
1478 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag);
1480 if (edge_port == NULL)
1483 if (!edge_port->open) {
1484 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1488 /* change the port settings to the new ones specified */
1489 change_port_settings(tty, edge_port, old_termios);
1493 /*****************************************************************************
1494 * get_lsr_info - get line status register info
1496 * Purpose: Let user call ioctl() to get info when the UART physically
1497 * is emptied. On bus types like RS485, the transmitter must
1498 * release the bus after transmitting. This must be done when
1499 * the transmit shift register is empty, not be done when the
1500 * transmit holding register is empty. This functionality
1501 * allows an RS485 driver to be written in user space.
1502 *****************************************************************************/
1503 static int get_lsr_info(struct edgeport_port *edge_port,
1504 unsigned int __user *value)
1506 unsigned int result = 0;
1507 unsigned long flags;
1509 spin_lock_irqsave(&edge_port->ep_lock, flags);
1510 if (edge_port->maxTxCredits == edge_port->txCredits &&
1511 edge_port->txfifo.count == 0) {
1512 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1513 result = TIOCSER_TEMT;
1515 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1517 if (copy_to_user(value, &result, sizeof(int)))
1522 static int edge_tiocmset(struct tty_struct *tty,
1523 unsigned int set, unsigned int clear)
1525 struct usb_serial_port *port = tty->driver_data;
1526 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1529 mcr = edge_port->shadowMCR;
1530 if (set & TIOCM_RTS)
1532 if (set & TIOCM_DTR)
1534 if (set & TIOCM_LOOP)
1535 mcr |= MCR_LOOPBACK;
1537 if (clear & TIOCM_RTS)
1539 if (clear & TIOCM_DTR)
1541 if (clear & TIOCM_LOOP)
1542 mcr &= ~MCR_LOOPBACK;
1544 edge_port->shadowMCR = mcr;
1546 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1551 static int edge_tiocmget(struct tty_struct *tty)
1553 struct usb_serial_port *port = tty->driver_data;
1554 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1555 unsigned int result = 0;
1559 msr = edge_port->shadowMSR;
1560 mcr = edge_port->shadowMCR;
1561 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1562 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1563 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1564 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1565 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1566 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1571 static int get_serial_info(struct edgeport_port *edge_port,
1572 struct serial_struct __user *retinfo)
1574 struct serial_struct tmp;
1579 memset(&tmp, 0, sizeof(tmp));
1581 tmp.type = PORT_16550A;
1582 tmp.line = edge_port->port->minor;
1583 tmp.port = edge_port->port->port_number;
1585 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1586 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1587 tmp.baud_base = 9600;
1588 tmp.close_delay = 5*HZ;
1589 tmp.closing_wait = 30*HZ;
1591 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1597 /*****************************************************************************
1599 * this function handles any ioctl calls to the driver
1600 *****************************************************************************/
1601 static int edge_ioctl(struct tty_struct *tty,
1602 unsigned int cmd, unsigned long arg)
1604 struct usb_serial_port *port = tty->driver_data;
1606 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1610 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
1611 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1614 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
1615 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1617 return -ENOIOCTLCMD;
1621 /*****************************************************************************
1623 * this function sends a break to the port
1624 *****************************************************************************/
1625 static void edge_break(struct tty_struct *tty, int break_state)
1627 struct usb_serial_port *port = tty->driver_data;
1628 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1629 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1632 if ((!edge_serial->is_epic) ||
1633 ((edge_serial->is_epic) &&
1634 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1635 /* flush and chase */
1636 edge_port->chaseResponsePending = true;
1638 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1639 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1641 /* block until chase finished */
1642 block_until_chase_response(edge_port);
1644 edge_port->chaseResponsePending = false;
1648 if ((!edge_serial->is_epic) ||
1649 ((edge_serial->is_epic) &&
1650 (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) {
1651 if (break_state == -1) {
1652 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
1653 status = send_iosp_ext_cmd(edge_port,
1654 IOSP_CMD_SET_BREAK, 0);
1656 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
1657 status = send_iosp_ext_cmd(edge_port,
1658 IOSP_CMD_CLEAR_BREAK, 0);
1661 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
1667 /*****************************************************************************
1669 * this function handles the data received on the bulk in pipe.
1670 *****************************************************************************/
1671 static void process_rcvd_data(struct edgeport_serial *edge_serial,
1672 unsigned char *buffer, __u16 bufferLength)
1674 struct usb_serial *serial = edge_serial->serial;
1675 struct device *dev = &serial->dev->dev;
1676 struct usb_serial_port *port;
1677 struct edgeport_port *edge_port;
1678 __u16 lastBufferLength;
1681 lastBufferLength = bufferLength + 1;
1683 while (bufferLength > 0) {
1684 /* failsafe incase we get a message that we don't understand */
1685 if (lastBufferLength == bufferLength) {
1686 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1689 lastBufferLength = bufferLength;
1691 switch (edge_serial->rxState) {
1693 edge_serial->rxHeader1 = *buffer;
1697 if (bufferLength == 0) {
1698 edge_serial->rxState = EXPECT_HDR2;
1701 /* otherwise, drop on through */
1703 edge_serial->rxHeader2 = *buffer;
1707 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1708 edge_serial->rxHeader1, edge_serial->rxHeader2);
1709 /* Process depending on whether this header is
1712 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1713 /* Decode this status header and go to
1714 * EXPECT_HDR1 (if we can process the status
1715 * with only 2 bytes), or go to EXPECT_HDR3 to
1716 * get the third byte. */
1717 edge_serial->rxPort =
1718 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1719 edge_serial->rxStatusCode =
1720 IOSP_GET_STATUS_CODE(
1721 edge_serial->rxHeader1);
1723 if (!IOSP_STATUS_IS_2BYTE(
1724 edge_serial->rxStatusCode)) {
1725 /* This status needs additional bytes.
1726 * Save what we have and then wait for
1729 edge_serial->rxStatusParam
1730 = edge_serial->rxHeader2;
1731 edge_serial->rxState = EXPECT_HDR3;
1734 /* We have all the header bytes, process the
1736 process_rcvd_status(edge_serial,
1737 edge_serial->rxHeader2, 0);
1738 edge_serial->rxState = EXPECT_HDR1;
1741 edge_serial->rxPort =
1742 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1743 edge_serial->rxBytesRemaining =
1744 IOSP_GET_HDR_DATA_LEN(
1745 edge_serial->rxHeader1,
1746 edge_serial->rxHeader2);
1747 dev_dbg(dev, "%s - Data for Port %u Len %u\n",
1749 edge_serial->rxPort,
1750 edge_serial->rxBytesRemaining);
1752 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1753 * ASSERT(DevExt->RxBytesRemaining <
1754 * IOSP_MAX_DATA_LENGTH);
1757 if (bufferLength == 0) {
1758 edge_serial->rxState = EXPECT_DATA;
1761 /* Else, drop through */
1763 case EXPECT_DATA: /* Expect data */
1764 if (bufferLength < edge_serial->rxBytesRemaining) {
1765 rxLen = bufferLength;
1766 /* Expect data to start next buffer */
1767 edge_serial->rxState = EXPECT_DATA;
1769 /* BufLen >= RxBytesRemaining */
1770 rxLen = edge_serial->rxBytesRemaining;
1771 /* Start another header next time */
1772 edge_serial->rxState = EXPECT_HDR1;
1775 bufferLength -= rxLen;
1776 edge_serial->rxBytesRemaining -= rxLen;
1778 /* spit this data back into the tty driver if this
1780 if (rxLen && edge_serial->rxPort < serial->num_ports) {
1781 port = serial->port[edge_serial->rxPort];
1782 edge_port = usb_get_serial_port_data(port);
1783 if (edge_port && edge_port->open) {
1784 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1786 edge_serial->rxPort);
1787 edge_tty_recv(edge_port->port, buffer,
1789 edge_port->port->icount.rx += rxLen;
1795 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1796 edge_serial->rxHeader3 = *buffer;
1800 /* We have all the header bytes, process the
1802 process_rcvd_status(edge_serial,
1803 edge_serial->rxStatusParam,
1804 edge_serial->rxHeader3);
1805 edge_serial->rxState = EXPECT_HDR1;
1812 /*****************************************************************************
1813 * process_rcvd_status
1814 * this function handles the any status messages received on the
1816 *****************************************************************************/
1817 static void process_rcvd_status(struct edgeport_serial *edge_serial,
1818 __u8 byte2, __u8 byte3)
1820 struct usb_serial_port *port;
1821 struct edgeport_port *edge_port;
1822 struct tty_struct *tty;
1824 __u8 code = edge_serial->rxStatusCode;
1826 /* switch the port pointer to the one being currently talked about */
1827 if (edge_serial->rxPort >= edge_serial->serial->num_ports)
1829 port = edge_serial->serial->port[edge_serial->rxPort];
1830 edge_port = usb_get_serial_port_data(port);
1831 if (edge_port == NULL) {
1832 dev_err(&edge_serial->serial->dev->dev,
1833 "%s - edge_port == NULL for port %d\n",
1834 __func__, edge_serial->rxPort);
1839 if (code == IOSP_EXT_STATUS) {
1841 case IOSP_EXT_STATUS_CHASE_RSP:
1842 /* we want to do EXT status regardless of port
1844 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1845 __func__, edge_serial->rxPort, byte3);
1846 /* Currently, the only EXT_STATUS is Chase, so process
1847 * here instead of one more call to one more subroutine
1848 * If/when more EXT_STATUS, there'll be more work to do
1849 * Also, we currently clear flag and close the port
1850 * regardless of content of above's Byte3.
1851 * We could choose to do something else when Byte3 says
1852 * Timeout on Chase from Edgeport, like wait longer in
1853 * block_until_chase_response, but for now we don't.
1855 edge_port->chaseResponsePending = false;
1856 wake_up(&edge_port->wait_chase);
1859 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1860 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1861 __func__, edge_serial->rxPort, byte3);
1862 /* Port->RxCheckRsp = true; */
1867 if (code == IOSP_STATUS_OPEN_RSP) {
1868 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1869 edge_port->maxTxCredits = edge_port->txCredits;
1870 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1871 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1872 handle_new_msr(edge_port, byte2);
1874 /* send the current line settings to the port so we are
1875 in sync with any further termios calls */
1876 tty = tty_port_tty_get(&edge_port->port->port);
1878 change_port_settings(tty,
1879 edge_port, &tty->termios);
1883 /* we have completed the open */
1884 edge_port->openPending = false;
1885 edge_port->open = true;
1886 wake_up(&edge_port->wait_open);
1890 /* If port is closed, silently discard all rcvd status. We can
1891 * have cases where buffered status is received AFTER the close
1892 * port command is sent to the Edgeport.
1894 if (!edge_port->open || edge_port->closePending)
1898 /* Not currently sent by Edgeport */
1899 case IOSP_STATUS_LSR:
1900 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1901 __func__, edge_serial->rxPort, byte2);
1902 handle_new_lsr(edge_port, false, byte2, 0);
1905 case IOSP_STATUS_LSR_DATA:
1906 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1907 __func__, edge_serial->rxPort, byte2, byte3);
1908 /* byte2 is LSR Register */
1909 /* byte3 is broken data byte */
1910 handle_new_lsr(edge_port, true, byte2, byte3);
1913 * case IOSP_EXT_4_STATUS:
1914 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1915 * __func__, edge_serial->rxPort, byte2, byte3);
1918 case IOSP_STATUS_MSR:
1919 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1920 __func__, edge_serial->rxPort, byte2);
1922 * Process this new modem status and generate appropriate
1923 * events, etc, based on the new status. This routine
1924 * also saves the MSR in Port->ShadowMsr.
1926 handle_new_msr(edge_port, byte2);
1930 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
1936 /*****************************************************************************
1938 * this function passes data on to the tty flip buffer
1939 *****************************************************************************/
1940 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1945 cnt = tty_insert_flip_string(&port->port, data, length);
1947 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1948 __func__, length - cnt);
1953 tty_flip_buffer_push(&port->port);
1957 /*****************************************************************************
1959 * this function handles any change to the msr register for a port.
1960 *****************************************************************************/
1961 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
1963 struct async_icount *icount;
1965 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1966 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1967 icount = &edge_port->port->icount;
1969 /* update input line counters */
1970 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1972 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1974 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1976 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1978 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1981 /* Save the new modem status */
1982 edge_port->shadowMSR = newMsr & 0xf0;
1986 /*****************************************************************************
1988 * this function handles any change to the lsr register for a port.
1989 *****************************************************************************/
1990 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
1991 __u8 lsr, __u8 data)
1993 __u8 newLsr = (__u8) (lsr & (__u8)
1994 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1995 struct async_icount *icount;
1997 edge_port->shadowLSR = lsr;
1999 if (newLsr & LSR_BREAK) {
2001 * Parity and Framing errors only count if they
2002 * occur exclusive of a break being
2005 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2008 /* Place LSR data byte into Rx buffer */
2010 edge_tty_recv(edge_port->port, &data, 1);
2012 /* update input line counters */
2013 icount = &edge_port->port->icount;
2014 if (newLsr & LSR_BREAK)
2016 if (newLsr & LSR_OVER_ERR)
2018 if (newLsr & LSR_PAR_ERR)
2020 if (newLsr & LSR_FRM_ERR)
2025 /****************************************************************************
2027 * writes a number of bytes to the Edgeport device's sram starting at the
2029 * If successful returns the number of bytes written, otherwise it returns
2030 * a negative error number of the problem.
2031 ****************************************************************************/
2032 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2033 __u16 length, const __u8 *data)
2036 __u16 current_length;
2037 unsigned char *transfer_buffer;
2039 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
2041 transfer_buffer = kmalloc(64, GFP_KERNEL);
2042 if (!transfer_buffer)
2045 /* need to split these writes up into 64 byte chunks */
2047 while (length > 0) {
2049 current_length = 64;
2051 current_length = length;
2053 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
2054 memcpy(transfer_buffer, data, current_length);
2055 result = usb_control_msg(serial->dev,
2056 usb_sndctrlpipe(serial->dev, 0),
2057 USB_REQUEST_ION_WRITE_RAM,
2058 0x40, addr, extAddr, transfer_buffer,
2059 current_length, 300);
2062 length -= current_length;
2063 addr += current_length;
2064 data += current_length;
2067 kfree(transfer_buffer);
2072 /****************************************************************************
2074 * writes a number of bytes to the Edgeport device's ROM starting at the
2076 * If successful returns the number of bytes written, otherwise it returns
2077 * a negative error number of the problem.
2078 ****************************************************************************/
2079 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2080 __u16 length, const __u8 *data)
2083 __u16 current_length;
2084 unsigned char *transfer_buffer;
2086 transfer_buffer = kmalloc(64, GFP_KERNEL);
2087 if (!transfer_buffer)
2090 /* need to split these writes up into 64 byte chunks */
2092 while (length > 0) {
2094 current_length = 64;
2096 current_length = length;
2097 memcpy(transfer_buffer, data, current_length);
2098 result = usb_control_msg(serial->dev,
2099 usb_sndctrlpipe(serial->dev, 0),
2100 USB_REQUEST_ION_WRITE_ROM, 0x40,
2102 transfer_buffer, current_length, 300);
2105 length -= current_length;
2106 addr += current_length;
2107 data += current_length;
2110 kfree(transfer_buffer);
2115 /****************************************************************************
2117 * reads a number of bytes from the Edgeport device starting at the given
2119 * Returns zero on success or a negative error number.
2120 ****************************************************************************/
2121 static int rom_read(struct usb_serial *serial, __u16 extAddr,
2122 __u16 addr, __u16 length, __u8 *data)
2125 __u16 current_length;
2126 unsigned char *transfer_buffer;
2128 transfer_buffer = kmalloc(64, GFP_KERNEL);
2129 if (!transfer_buffer)
2132 /* need to split these reads up into 64 byte chunks */
2134 while (length > 0) {
2136 current_length = 64;
2138 current_length = length;
2139 result = usb_control_msg(serial->dev,
2140 usb_rcvctrlpipe(serial->dev, 0),
2141 USB_REQUEST_ION_READ_ROM,
2142 0xC0, addr, extAddr, transfer_buffer,
2143 current_length, 300);
2144 if (result < current_length) {
2149 memcpy(data, transfer_buffer, current_length);
2150 length -= current_length;
2151 addr += current_length;
2152 data += current_length;
2157 kfree(transfer_buffer);
2162 /****************************************************************************
2164 * Is used to send a IOSP message to the Edgeport device
2165 ****************************************************************************/
2166 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2167 __u8 command, __u8 param)
2169 unsigned char *buffer;
2170 unsigned char *currentCommand;
2174 buffer = kmalloc(10, GFP_ATOMIC);
2178 currentCommand = buffer;
2180 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number,
2183 status = write_cmd_usb(edge_port, buffer, length);
2185 /* something bad happened, let's free up the memory */
2193 /*****************************************************************************
2195 * this function writes the given buffer out to the bulk write endpoint.
2196 *****************************************************************************/
2197 static int write_cmd_usb(struct edgeport_port *edge_port,
2198 unsigned char *buffer, int length)
2200 struct edgeport_serial *edge_serial =
2201 usb_get_serial_data(edge_port->port->serial);
2202 struct device *dev = &edge_port->port->dev;
2206 usb_serial_debug_data(dev, __func__, length, buffer);
2208 /* Allocate our next urb */
2209 urb = usb_alloc_urb(0, GFP_ATOMIC);
2213 atomic_inc(&CmdUrbs);
2214 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2215 __func__, urb, atomic_read(&CmdUrbs));
2217 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2218 usb_sndbulkpipe(edge_serial->serial->dev,
2219 edge_serial->bulk_out_endpoint),
2220 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2222 edge_port->commandPending = true;
2223 status = usb_submit_urb(urb, GFP_ATOMIC);
2226 /* something went wrong */
2227 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2230 atomic_dec(&CmdUrbs);
2235 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2237 if (edge_port->commandPending) {
2238 /* command timed out */
2239 dev_dbg(dev, "%s - command timed out\n", __func__);
2247 /*****************************************************************************
2248 * send_cmd_write_baud_rate
2249 * this function sends the proper command to change the baud rate of the
2251 *****************************************************************************/
2252 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2255 struct edgeport_serial *edge_serial =
2256 usb_get_serial_data(edge_port->port->serial);
2257 struct device *dev = &edge_port->port->dev;
2258 unsigned char *cmdBuffer;
2259 unsigned char *currCmd;
2263 u32 number = edge_port->port->port_number;
2265 if (edge_serial->is_epic &&
2266 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2267 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2272 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
2274 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
2276 dev_err(dev, "%s - bad baud rate\n", __func__);
2280 /* Alloc memory for the string of commands. */
2281 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2285 currCmd = cmdBuffer;
2287 /* Enable access to divisor latch */
2288 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2290 /* Write the divisor itself */
2291 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2292 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2294 /* Restore original value to disable access to divisor latch */
2295 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2296 edge_port->shadowLCR);
2298 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2300 /* something bad happened, let's free up the memory */
2308 /*****************************************************************************
2309 * calc_baud_rate_divisor
2310 * this function calculates the proper baud rate divisor for the specified
2312 *****************************************************************************/
2313 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
2318 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2319 if (divisor_table[i].BaudRate == baudrate) {
2320 *divisor = divisor_table[i].Divisor;
2325 /* We have tried all of the standard baud rates
2326 * lets try to calculate the divisor for this baud rate
2327 * Make sure the baud rate is reasonable */
2328 if (baudrate > 50 && baudrate < 230400) {
2330 custom = (__u16)((230400L + baudrate/2) / baudrate);
2334 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
2342 /*****************************************************************************
2343 * send_cmd_write_uart_register
2344 * this function builds up a uart register message and sends to the device.
2345 *****************************************************************************/
2346 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2347 __u8 regNum, __u8 regValue)
2349 struct edgeport_serial *edge_serial =
2350 usb_get_serial_data(edge_port->port->serial);
2351 struct device *dev = &edge_port->port->dev;
2352 unsigned char *cmdBuffer;
2353 unsigned char *currCmd;
2354 unsigned long cmdLen = 0;
2357 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2358 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2360 if (edge_serial->is_epic &&
2361 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2363 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2367 if (edge_serial->is_epic &&
2368 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2370 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2374 /* Alloc memory for the string of commands. */
2375 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2376 if (cmdBuffer == NULL)
2379 currCmd = cmdBuffer;
2381 /* Build a cmd in the buffer to write the given register */
2382 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2385 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2387 /* something bad happened, let's free up the memory */
2395 /*****************************************************************************
2396 * change_port_settings
2397 * This routine is called to set the UART on the device to match the
2398 * specified new settings.
2399 *****************************************************************************/
2401 static void change_port_settings(struct tty_struct *tty,
2402 struct edgeport_port *edge_port, struct ktermios *old_termios)
2404 struct device *dev = &edge_port->port->dev;
2405 struct edgeport_serial *edge_serial =
2406 usb_get_serial_data(edge_port->port->serial);
2417 if (!edge_port->open &&
2418 !edge_port->openPending) {
2419 dev_dbg(dev, "%s - port not opened\n", __func__);
2423 cflag = tty->termios.c_cflag;
2425 switch (cflag & CSIZE) {
2427 lData = LCR_BITS_5; mask = 0x1f;
2428 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2431 lData = LCR_BITS_6; mask = 0x3f;
2432 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2435 lData = LCR_BITS_7; mask = 0x7f;
2436 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2441 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2445 lParity = LCR_PAR_NONE;
2446 if (cflag & PARENB) {
2447 if (cflag & CMSPAR) {
2448 if (cflag & PARODD) {
2449 lParity = LCR_PAR_MARK;
2450 dev_dbg(dev, "%s - parity = mark\n", __func__);
2452 lParity = LCR_PAR_SPACE;
2453 dev_dbg(dev, "%s - parity = space\n", __func__);
2455 } else if (cflag & PARODD) {
2456 lParity = LCR_PAR_ODD;
2457 dev_dbg(dev, "%s - parity = odd\n", __func__);
2459 lParity = LCR_PAR_EVEN;
2460 dev_dbg(dev, "%s - parity = even\n", __func__);
2463 dev_dbg(dev, "%s - parity = none\n", __func__);
2466 if (cflag & CSTOPB) {
2468 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2471 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2474 /* figure out the flow control settings */
2475 rxFlow = txFlow = 0x00;
2476 if (cflag & CRTSCTS) {
2477 rxFlow |= IOSP_RX_FLOW_RTS;
2478 txFlow |= IOSP_TX_FLOW_CTS;
2479 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2481 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2484 /* if we are implementing XON/XOFF, set the start and stop character
2486 if (I_IXOFF(tty) || I_IXON(tty)) {
2487 unsigned char stop_char = STOP_CHAR(tty);
2488 unsigned char start_char = START_CHAR(tty);
2490 if ((!edge_serial->is_epic) ||
2491 ((edge_serial->is_epic) &&
2492 (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) {
2493 send_iosp_ext_cmd(edge_port,
2494 IOSP_CMD_SET_XON_CHAR, start_char);
2495 send_iosp_ext_cmd(edge_port,
2496 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2499 /* if we are implementing INBOUND XON/XOFF */
2501 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2502 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2503 __func__, start_char, stop_char);
2505 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2508 /* if we are implementing OUTBOUND XON/XOFF */
2510 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2511 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2512 __func__, start_char, stop_char);
2514 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2518 /* Set flow control to the configured value */
2519 if ((!edge_serial->is_epic) ||
2520 ((edge_serial->is_epic) &&
2521 (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)))
2522 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2523 if ((!edge_serial->is_epic) ||
2524 ((edge_serial->is_epic) &&
2525 (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)))
2526 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2529 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2530 edge_port->shadowLCR |= (lData | lParity | lStop);
2532 edge_port->validDataMask = mask;
2534 /* Send the updated LCR value to the EdgePort */
2535 status = send_cmd_write_uart_register(edge_port, LCR,
2536 edge_port->shadowLCR);
2540 /* set up the MCR register and send it to the EdgePort */
2541 edge_port->shadowMCR = MCR_MASTER_IE;
2543 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2545 status = send_cmd_write_uart_register(edge_port, MCR,
2546 edge_port->shadowMCR);
2550 /* Determine divisor based on baud rate */
2551 baud = tty_get_baud_rate(tty);
2553 /* pick a default, any default... */
2557 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
2558 status = send_cmd_write_baud_rate(edge_port, baud);
2560 /* Speed change was not possible - put back the old speed */
2561 baud = tty_termios_baud_rate(old_termios);
2562 tty_encode_baud_rate(tty, baud, baud);
2567 /****************************************************************************
2569 * Turns a string from Unicode into ASCII.
2570 * Doesn't do a good job with any characters that are outside the normal
2571 * ASCII range, but it's only for debugging...
2572 * NOTE: expects the unicode in LE format
2573 ****************************************************************************/
2574 static void unicode_to_ascii(char *string, int buflen,
2575 __le16 *unicode, int unicode_size)
2579 if (buflen <= 0) /* never happens, but... */
2581 --buflen; /* space for nul */
2583 for (i = 0; i < unicode_size; i++) {
2586 string[i] = (char)(le16_to_cpu(unicode[i]));
2592 /****************************************************************************
2593 * get_manufacturing_desc
2594 * reads in the manufacturing descriptor and stores it into the serial
2596 ****************************************************************************/
2597 static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2599 struct device *dev = &edge_serial->serial->dev->dev;
2602 dev_dbg(dev, "getting manufacturer descriptor\n");
2604 response = rom_read(edge_serial->serial,
2605 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2606 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2607 EDGE_MANUF_DESC_LEN,
2608 (__u8 *)(&edge_serial->manuf_descriptor));
2611 dev_err(dev, "error in getting manufacturer descriptor: %d\n",
2615 dev_dbg(dev, "**Manufacturer Descriptor\n");
2616 dev_dbg(dev, " RomSize: %dK\n",
2617 edge_serial->manuf_descriptor.RomSize);
2618 dev_dbg(dev, " RamSize: %dK\n",
2619 edge_serial->manuf_descriptor.RamSize);
2620 dev_dbg(dev, " CpuRev: %d\n",
2621 edge_serial->manuf_descriptor.CpuRev);
2622 dev_dbg(dev, " BoardRev: %d\n",
2623 edge_serial->manuf_descriptor.BoardRev);
2624 dev_dbg(dev, " NumPorts: %d\n",
2625 edge_serial->manuf_descriptor.NumPorts);
2626 dev_dbg(dev, " DescDate: %d/%d/%d\n",
2627 edge_serial->manuf_descriptor.DescDate[0],
2628 edge_serial->manuf_descriptor.DescDate[1],
2629 edge_serial->manuf_descriptor.DescDate[2]+1900);
2630 unicode_to_ascii(string, sizeof(string),
2631 edge_serial->manuf_descriptor.SerialNumber,
2632 edge_serial->manuf_descriptor.SerNumLength/2);
2633 dev_dbg(dev, " SerialNumber: %s\n", string);
2634 unicode_to_ascii(string, sizeof(string),
2635 edge_serial->manuf_descriptor.AssemblyNumber,
2636 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2637 dev_dbg(dev, " AssemblyNumber: %s\n", string);
2638 unicode_to_ascii(string, sizeof(string),
2639 edge_serial->manuf_descriptor.OemAssyNumber,
2640 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2641 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2642 dev_dbg(dev, " UartType: %d\n",
2643 edge_serial->manuf_descriptor.UartType);
2644 dev_dbg(dev, " IonPid: %d\n",
2645 edge_serial->manuf_descriptor.IonPid);
2646 dev_dbg(dev, " IonConfig: %d\n",
2647 edge_serial->manuf_descriptor.IonConfig);
2652 /****************************************************************************
2654 * reads in the bootloader descriptor and stores it into the serial
2656 ****************************************************************************/
2657 static void get_boot_desc(struct edgeport_serial *edge_serial)
2659 struct device *dev = &edge_serial->serial->dev->dev;
2662 dev_dbg(dev, "getting boot descriptor\n");
2664 response = rom_read(edge_serial->serial,
2665 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2666 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2668 (__u8 *)(&edge_serial->boot_descriptor));
2671 dev_err(dev, "error in getting boot descriptor: %d\n",
2674 dev_dbg(dev, "**Boot Descriptor:\n");
2675 dev_dbg(dev, " BootCodeLength: %d\n",
2676 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2677 dev_dbg(dev, " MajorVersion: %d\n",
2678 edge_serial->boot_descriptor.MajorVersion);
2679 dev_dbg(dev, " MinorVersion: %d\n",
2680 edge_serial->boot_descriptor.MinorVersion);
2681 dev_dbg(dev, " BuildNumber: %d\n",
2682 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2683 dev_dbg(dev, " Capabilities: 0x%x\n",
2684 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2685 dev_dbg(dev, " UConfig0: %d\n",
2686 edge_serial->boot_descriptor.UConfig0);
2687 dev_dbg(dev, " UConfig1: %d\n",
2688 edge_serial->boot_descriptor.UConfig1);
2693 /****************************************************************************
2694 * load_application_firmware
2695 * This is called to load the application firmware to the device
2696 ****************************************************************************/
2697 static void load_application_firmware(struct edgeport_serial *edge_serial)
2699 struct device *dev = &edge_serial->serial->dev->dev;
2700 const struct ihex_binrec *rec;
2701 const struct firmware *fw;
2702 const char *fw_name;
2703 const char *fw_info;
2708 switch (edge_serial->product_info.iDownloadFile) {
2709 case EDGE_DOWNLOAD_FILE_I930:
2710 fw_info = "downloading firmware version (930)";
2711 fw_name = "/*(DEBLOBBED)*/";
2714 case EDGE_DOWNLOAD_FILE_80251:
2715 fw_info = "downloading firmware version (80251)";
2716 fw_name = "/*(DEBLOBBED)*/";
2719 case EDGE_DOWNLOAD_FILE_NONE:
2720 dev_dbg(dev, "No download file specified, skipping download\n");
2727 response = reject_firmware(&fw, fw_name,
2728 &edge_serial->serial->dev->dev);
2730 dev_err(dev, "Failed to load image \"%s\" err %d\n",
2735 rec = (const struct ihex_binrec *)fw->data;
2736 build = (rec->data[2] << 8) | rec->data[3];
2738 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
2740 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2741 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2742 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2744 for (rec = ihex_next_binrec(rec); rec;
2745 rec = ihex_next_binrec(rec)) {
2746 Operaddr = be32_to_cpu(rec->addr);
2747 response = sram_write(edge_serial->serial,
2750 be16_to_cpu(rec->len),
2753 dev_err(&edge_serial->serial->dev->dev,
2754 "sram_write failed (%x, %x, %d)\n",
2755 Operaddr >> 16, Operaddr & 0xFFFF,
2756 be16_to_cpu(rec->len));
2761 dev_dbg(dev, "sending exec_dl_code\n");
2762 response = usb_control_msg (edge_serial->serial->dev,
2763 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2764 USB_REQUEST_ION_EXEC_DL_CODE,
2765 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2767 release_firmware(fw);
2771 /****************************************************************************
2773 ****************************************************************************/
2774 static int edge_startup(struct usb_serial *serial)
2776 struct edgeport_serial *edge_serial;
2777 struct usb_device *dev;
2778 struct device *ddev = &serial->dev->dev;
2781 bool interrupt_in_found;
2783 bool bulk_out_found;
2784 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2785 EDGE_COMPATIBILITY_MASK1,
2786 EDGE_COMPATIBILITY_MASK2 };
2788 if (serial->num_bulk_in < 1 || serial->num_interrupt_in < 1) {
2789 dev_err(&serial->interface->dev, "missing endpoints\n");
2795 /* create our private serial structure */
2796 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2800 spin_lock_init(&edge_serial->es_lock);
2801 edge_serial->serial = serial;
2802 usb_set_serial_data(serial, edge_serial);
2804 /* get the name for the device from the device */
2805 i = usb_string(dev, dev->descriptor.iManufacturer,
2806 &edge_serial->name[0], MAX_NAME_LEN+1);
2809 edge_serial->name[i++] = ' ';
2810 usb_string(dev, dev->descriptor.iProduct,
2811 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2813 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2815 /* Read the epic descriptor */
2816 if (get_epic_descriptor(edge_serial) < 0) {
2817 /* memcpy descriptor to Supports structures */
2818 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2819 sizeof(struct edge_compatibility_bits));
2821 /* get the manufacturing descriptor for this device */
2822 get_manufacturing_desc(edge_serial);
2824 /* get the boot descriptor */
2825 get_boot_desc(edge_serial);
2827 get_product_info(edge_serial);
2830 /* set the number of ports from the manufacturing description */
2831 /* serial->num_ports = serial->product_info.NumPorts; */
2832 if ((!edge_serial->is_epic) &&
2833 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2835 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2836 edge_serial->product_info.NumPorts,
2840 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
2842 /* If not an EPiC device */
2843 if (!edge_serial->is_epic) {
2844 /* now load the application firmware into this device */
2845 load_application_firmware(edge_serial);
2847 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
2849 /* Check current Edgeport EEPROM and update if necessary */
2850 update_edgeport_E2PROM(edge_serial);
2852 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
2854 /* set the configuration to use #1 */
2855 /* dev_dbg(ddev, "set_configuration 1\n"); */
2856 /* usb_set_configuration (dev, 1); */
2858 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
2859 edge_serial->product_info.FirmwareMajorVersion,
2860 edge_serial->product_info.FirmwareMinorVersion,
2861 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
2863 /* we set up the pointers to the endpoints in the edge_open function,
2864 * as the structures aren't created yet. */
2868 if (edge_serial->is_epic) {
2869 struct usb_host_interface *alt;
2871 alt = serial->interface->cur_altsetting;
2873 /* EPIC thing, set up our interrupt polling now and our read
2874 * urb, so that the device knows it really is connected. */
2875 interrupt_in_found = bulk_in_found = bulk_out_found = false;
2876 for (i = 0; i < alt->desc.bNumEndpoints; ++i) {
2877 struct usb_endpoint_descriptor *endpoint;
2880 endpoint = &alt->endpoint[i].desc;
2881 buffer_size = usb_endpoint_maxp(endpoint);
2882 if (!interrupt_in_found &&
2883 (usb_endpoint_is_int_in(endpoint))) {
2884 /* we found a interrupt in endpoint */
2885 dev_dbg(ddev, "found interrupt in\n");
2887 /* not set up yet, so do it now */
2888 edge_serial->interrupt_read_urb =
2889 usb_alloc_urb(0, GFP_KERNEL);
2890 if (!edge_serial->interrupt_read_urb) {
2895 edge_serial->interrupt_in_buffer =
2896 kmalloc(buffer_size, GFP_KERNEL);
2897 if (!edge_serial->interrupt_in_buffer) {
2901 edge_serial->interrupt_in_endpoint =
2902 endpoint->bEndpointAddress;
2904 /* set up our interrupt urb */
2906 edge_serial->interrupt_read_urb,
2909 endpoint->bEndpointAddress),
2910 edge_serial->interrupt_in_buffer,
2912 edge_interrupt_callback,
2914 endpoint->bInterval);
2916 interrupt_in_found = true;
2919 if (!bulk_in_found &&
2920 (usb_endpoint_is_bulk_in(endpoint))) {
2921 /* we found a bulk in endpoint */
2922 dev_dbg(ddev, "found bulk in\n");
2924 /* not set up yet, so do it now */
2925 edge_serial->read_urb =
2926 usb_alloc_urb(0, GFP_KERNEL);
2927 if (!edge_serial->read_urb) {
2932 edge_serial->bulk_in_buffer =
2933 kmalloc(buffer_size, GFP_KERNEL);
2934 if (!edge_serial->bulk_in_buffer) {
2938 edge_serial->bulk_in_endpoint =
2939 endpoint->bEndpointAddress;
2941 /* set up our bulk in urb */
2942 usb_fill_bulk_urb(edge_serial->read_urb, dev,
2943 usb_rcvbulkpipe(dev,
2944 endpoint->bEndpointAddress),
2945 edge_serial->bulk_in_buffer,
2946 usb_endpoint_maxp(endpoint),
2947 edge_bulk_in_callback,
2949 bulk_in_found = true;
2952 if (!bulk_out_found &&
2953 (usb_endpoint_is_bulk_out(endpoint))) {
2954 /* we found a bulk out endpoint */
2955 dev_dbg(ddev, "found bulk out\n");
2956 edge_serial->bulk_out_endpoint =
2957 endpoint->bEndpointAddress;
2958 bulk_out_found = true;
2962 if (response || !interrupt_in_found || !bulk_in_found ||
2965 dev_err(ddev, "expected endpoints not found\n");
2972 /* start interrupt read for this edgeport this interrupt will
2973 * continue as long as the edgeport is connected */
2974 response = usb_submit_urb(edge_serial->interrupt_read_urb,
2977 dev_err(ddev, "%s - Error %d submitting control urb\n",
2978 __func__, response);
2986 usb_free_urb(edge_serial->interrupt_read_urb);
2987 kfree(edge_serial->interrupt_in_buffer);
2989 usb_free_urb(edge_serial->read_urb);
2990 kfree(edge_serial->bulk_in_buffer);
2998 /****************************************************************************
3000 * This function is called whenever the device is removed from the usb bus.
3001 ****************************************************************************/
3002 static void edge_disconnect(struct usb_serial *serial)
3004 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3006 if (edge_serial->is_epic) {
3007 usb_kill_urb(edge_serial->interrupt_read_urb);
3008 usb_kill_urb(edge_serial->read_urb);
3013 /****************************************************************************
3015 * This function is called when the device structure is deallocated.
3016 ****************************************************************************/
3017 static void edge_release(struct usb_serial *serial)
3019 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3021 if (edge_serial->is_epic) {
3022 usb_kill_urb(edge_serial->interrupt_read_urb);
3023 usb_free_urb(edge_serial->interrupt_read_urb);
3024 kfree(edge_serial->interrupt_in_buffer);
3026 usb_kill_urb(edge_serial->read_urb);
3027 usb_free_urb(edge_serial->read_urb);
3028 kfree(edge_serial->bulk_in_buffer);
3034 static int edge_port_probe(struct usb_serial_port *port)
3036 struct edgeport_port *edge_port;
3038 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
3042 spin_lock_init(&edge_port->ep_lock);
3043 edge_port->port = port;
3045 usb_set_serial_port_data(port, edge_port);
3050 static int edge_port_remove(struct usb_serial_port *port)
3052 struct edgeport_port *edge_port;
3054 edge_port = usb_get_serial_port_data(port);
3060 module_usb_serial_driver(serial_drivers, id_table_combined);
3062 MODULE_AUTHOR(DRIVER_AUTHOR);
3063 MODULE_DESCRIPTION(DRIVER_DESC);
3064 MODULE_LICENSE("GPL");