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 = "edgeport/boot.fw";
293 case EDGE_DOWNLOAD_FILE_80251:
294 fw_name = "edgeport/boot2.fw";
300 response = request_ihex_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;
580 int status = urb->status;
589 /* this urb is terminated, clean up */
590 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
593 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
597 dev = &edge_serial->serial->dev->dev;
599 /* process this interrupt-read even if there are no ports open */
601 usb_serial_debug_data(dev, __func__, length, data);
604 bytes_avail = data[0] | (data[1] << 8);
606 spin_lock(&edge_serial->es_lock);
607 edge_serial->rxBytesAvail += bytes_avail;
609 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
610 __func__, bytes_avail,
611 edge_serial->rxBytesAvail,
612 edge_serial->read_in_progress);
614 if (edge_serial->rxBytesAvail > 0 &&
615 !edge_serial->read_in_progress) {
616 dev_dbg(dev, "%s - posting a read\n", __func__);
617 edge_serial->read_in_progress = true;
619 /* we have pending bytes on the
620 bulk in pipe, send a request */
621 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
624 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
626 edge_serial->read_in_progress = false;
629 spin_unlock(&edge_serial->es_lock);
632 /* grab the txcredits for the ports if available */
635 while ((position < length) &&
636 (portNumber < edge_serial->serial->num_ports)) {
637 txCredits = data[position] | (data[position+1] << 8);
639 port = edge_serial->serial->port[portNumber];
640 edge_port = usb_get_serial_port_data(port);
641 if (edge_port->open) {
642 spin_lock(&edge_port->ep_lock);
643 edge_port->txCredits += txCredits;
644 spin_unlock(&edge_port->ep_lock);
645 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
646 __func__, portNumber,
647 edge_port->txCredits);
649 /* tell the tty driver that something
651 tty_port_tty_wakeup(&edge_port->port->port);
652 /* Since we have more credit, check
653 if more data can be sent */
654 send_more_port_data(edge_serial,
664 result = usb_submit_urb(urb, GFP_ATOMIC);
666 dev_err(&urb->dev->dev,
667 "%s - Error %d submitting control urb\n",
672 /*****************************************************************************
673 * edge_bulk_in_callback
674 * this is the callback function for when we have received data on the
676 *****************************************************************************/
677 static void edge_bulk_in_callback(struct urb *urb)
679 struct edgeport_serial *edge_serial = urb->context;
681 unsigned char *data = urb->transfer_buffer;
683 __u16 raw_data_length;
684 int status = urb->status;
687 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
689 edge_serial->read_in_progress = false;
693 if (urb->actual_length == 0) {
694 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
695 edge_serial->read_in_progress = false;
699 dev = &edge_serial->serial->dev->dev;
700 raw_data_length = urb->actual_length;
702 usb_serial_debug_data(dev, __func__, raw_data_length, data);
704 spin_lock(&edge_serial->es_lock);
706 /* decrement our rxBytes available by the number that we just got */
707 edge_serial->rxBytesAvail -= raw_data_length;
709 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
710 raw_data_length, edge_serial->rxBytesAvail);
712 process_rcvd_data(edge_serial, data, urb->actual_length);
714 /* check to see if there's any more data for us to read */
715 if (edge_serial->rxBytesAvail > 0) {
716 dev_dbg(dev, "%s - posting a read\n", __func__);
717 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
720 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
722 edge_serial->read_in_progress = false;
725 edge_serial->read_in_progress = false;
728 spin_unlock(&edge_serial->es_lock);
732 /*****************************************************************************
733 * edge_bulk_out_data_callback
734 * this is the callback function for when we have finished sending
735 * serial data on the bulk out endpoint.
736 *****************************************************************************/
737 static void edge_bulk_out_data_callback(struct urb *urb)
739 struct edgeport_port *edge_port = urb->context;
740 int status = urb->status;
743 dev_dbg(&urb->dev->dev,
744 "%s - nonzero write bulk status received: %d\n",
749 tty_port_tty_wakeup(&edge_port->port->port);
751 /* Release the Write URB */
752 edge_port->write_in_progress = false;
754 /* Check if more data needs to be sent */
755 send_more_port_data((struct edgeport_serial *)
756 (usb_get_serial_data(edge_port->port->serial)), edge_port);
760 /*****************************************************************************
762 * this is the callback function for when we have finished sending a
763 * command on the bulk out endpoint.
764 *****************************************************************************/
765 static void edge_bulk_out_cmd_callback(struct urb *urb)
767 struct edgeport_port *edge_port = urb->context;
768 int status = urb->status;
770 atomic_dec(&CmdUrbs);
771 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n",
772 __func__, urb, atomic_read(&CmdUrbs));
775 /* clean up the transfer buffer */
776 kfree(urb->transfer_buffer);
778 /* Free the command urb */
782 dev_dbg(&urb->dev->dev,
783 "%s - nonzero write bulk status received: %d\n",
788 /* tell the tty driver that something has changed */
790 tty_port_tty_wakeup(&edge_port->port->port);
792 /* we have completed the command */
793 edge_port->commandPending = false;
794 wake_up(&edge_port->wait_command);
798 /*****************************************************************************
799 * Driver tty interface functions
800 *****************************************************************************/
802 /*****************************************************************************
804 * this function is called by the tty driver when a port is opened
805 * If successful, we return 0
806 * Otherwise we return a negative error number.
807 *****************************************************************************/
808 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
810 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
811 struct device *dev = &port->dev;
812 struct usb_serial *serial;
813 struct edgeport_serial *edge_serial;
816 if (edge_port == NULL)
819 /* see if we've set up our endpoint info yet (can't set it up
820 in edge_startup as the structures were not set up at that time.) */
821 serial = port->serial;
822 edge_serial = usb_get_serial_data(serial);
823 if (edge_serial == NULL)
825 if (edge_serial->interrupt_in_buffer == NULL) {
826 struct usb_serial_port *port0 = serial->port[0];
828 /* not set up yet, so do it now */
829 edge_serial->interrupt_in_buffer =
830 port0->interrupt_in_buffer;
831 edge_serial->interrupt_in_endpoint =
832 port0->interrupt_in_endpointAddress;
833 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
834 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
835 edge_serial->bulk_in_endpoint =
836 port0->bulk_in_endpointAddress;
837 edge_serial->read_urb = port0->read_urb;
838 edge_serial->bulk_out_endpoint =
839 port0->bulk_out_endpointAddress;
841 /* set up our interrupt urb */
842 usb_fill_int_urb(edge_serial->interrupt_read_urb,
844 usb_rcvintpipe(serial->dev,
845 port0->interrupt_in_endpointAddress),
846 port0->interrupt_in_buffer,
847 edge_serial->interrupt_read_urb->transfer_buffer_length,
848 edge_interrupt_callback, edge_serial,
849 edge_serial->interrupt_read_urb->interval);
851 /* set up our bulk in urb */
852 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
853 usb_rcvbulkpipe(serial->dev,
854 port0->bulk_in_endpointAddress),
855 port0->bulk_in_buffer,
856 edge_serial->read_urb->transfer_buffer_length,
857 edge_bulk_in_callback, edge_serial);
858 edge_serial->read_in_progress = false;
860 /* start interrupt read for this edgeport
861 * this interrupt will continue as long
862 * as the edgeport is connected */
863 response = usb_submit_urb(edge_serial->interrupt_read_urb,
866 dev_err(dev, "%s - Error %d submitting control urb\n",
871 /* initialize our wait queues */
872 init_waitqueue_head(&edge_port->wait_open);
873 init_waitqueue_head(&edge_port->wait_chase);
874 init_waitqueue_head(&edge_port->wait_command);
876 /* initialize our port settings */
877 edge_port->txCredits = 0; /* Can't send any data yet */
878 /* Must always set this bit to enable ints! */
879 edge_port->shadowMCR = MCR_MASTER_IE;
880 edge_port->chaseResponsePending = false;
882 /* send a open port command */
883 edge_port->openPending = true;
884 edge_port->open = false;
885 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
888 dev_err(dev, "%s - error sending open port command\n", __func__);
889 edge_port->openPending = false;
893 /* now wait for the port to be completely opened */
894 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
897 if (!edge_port->open) {
899 dev_dbg(dev, "%s - open timedout\n", __func__);
900 edge_port->openPending = false;
904 /* create the txfifo */
905 edge_port->txfifo.head = 0;
906 edge_port->txfifo.tail = 0;
907 edge_port->txfifo.count = 0;
908 edge_port->txfifo.size = edge_port->maxTxCredits;
909 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
911 if (!edge_port->txfifo.fifo) {
916 /* Allocate a URB for the write */
917 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
918 edge_port->write_in_progress = false;
920 if (!edge_port->write_urb) {
925 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
926 __func__, edge_port->maxTxCredits);
932 /************************************************************************
934 * block_until_chase_response
936 * This function will block the close until one of the following:
937 * 1. Response to our Chase comes from Edgeport
938 * 2. A timeout of 10 seconds without activity has expired
939 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
941 ************************************************************************/
942 static void block_until_chase_response(struct edgeport_port *edge_port)
944 struct device *dev = &edge_port->port->dev;
951 /* Save Last credits */
952 lastCredits = edge_port->txCredits;
954 /* Did we get our Chase response */
955 if (!edge_port->chaseResponsePending) {
956 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
958 /* did we get all of our credit back? */
959 if (edge_port->txCredits == edge_port->maxTxCredits) {
960 dev_dbg(dev, "%s - Got all credits\n", __func__);
965 /* Block the thread for a while */
966 prepare_to_wait(&edge_port->wait_chase, &wait,
967 TASK_UNINTERRUPTIBLE);
968 schedule_timeout(timeout);
969 finish_wait(&edge_port->wait_chase, &wait);
971 if (lastCredits == edge_port->txCredits) {
972 /* No activity.. count down. */
975 edge_port->chaseResponsePending = false;
976 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
980 /* Reset timeout value back to 10 seconds */
981 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
982 lastCredits, edge_port->txCredits);
989 /************************************************************************
991 * block_until_tx_empty
993 * This function will block the close until one of the following:
995 * 2. The edgeport has stopped
996 * 3. A timeout of 3 seconds without activity has expired
998 ************************************************************************/
999 static void block_until_tx_empty(struct edgeport_port *edge_port)
1001 struct device *dev = &edge_port->port->dev;
1003 struct TxFifo *fifo = &edge_port->txfifo;
1005 int timeout = HZ/10;
1009 /* Save Last count */
1010 lastCount = fifo->count;
1012 /* Is the Edgeport Buffer empty? */
1013 if (lastCount == 0) {
1014 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1018 /* Block the thread for a while */
1019 prepare_to_wait(&edge_port->wait_chase, &wait,
1020 TASK_UNINTERRUPTIBLE);
1021 schedule_timeout(timeout);
1022 finish_wait(&edge_port->wait_chase, &wait);
1024 dev_dbg(dev, "%s wait\n", __func__);
1026 if (lastCount == fifo->count) {
1027 /* No activity.. count down. */
1030 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1034 /* Reset timeout value back to seconds */
1041 /*****************************************************************************
1043 * this function is called by the tty driver when a port is closed
1044 *****************************************************************************/
1045 static void edge_close(struct usb_serial_port *port)
1047 struct edgeport_serial *edge_serial;
1048 struct edgeport_port *edge_port;
1051 edge_serial = usb_get_serial_data(port->serial);
1052 edge_port = usb_get_serial_port_data(port);
1053 if (edge_serial == NULL || edge_port == NULL)
1056 /* block until tx is empty */
1057 block_until_tx_empty(edge_port);
1059 edge_port->closePending = true;
1061 if (!edge_serial->is_epic ||
1062 edge_serial->epic_descriptor.Supports.IOSPChase) {
1063 /* flush and chase */
1064 edge_port->chaseResponsePending = true;
1066 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1067 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1069 /* block until chase finished */
1070 block_until_chase_response(edge_port);
1072 edge_port->chaseResponsePending = false;
1075 if (!edge_serial->is_epic ||
1076 edge_serial->epic_descriptor.Supports.IOSPClose) {
1077 /* close the port */
1078 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
1079 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1082 /* port->close = true; */
1083 edge_port->closePending = false;
1084 edge_port->open = false;
1085 edge_port->openPending = false;
1087 usb_kill_urb(edge_port->write_urb);
1089 if (edge_port->write_urb) {
1090 /* if this urb had a transfer buffer already
1091 (old transfer) free it */
1092 kfree(edge_port->write_urb->transfer_buffer);
1093 usb_free_urb(edge_port->write_urb);
1094 edge_port->write_urb = NULL;
1096 kfree(edge_port->txfifo.fifo);
1097 edge_port->txfifo.fifo = NULL;
1100 /*****************************************************************************
1102 * this function is called by the tty driver when data should be written
1104 * If successful, we return the number of bytes written, otherwise we
1105 * return a negative error number.
1106 *****************************************************************************/
1107 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1108 const unsigned char *data, int count)
1110 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1111 struct TxFifo *fifo;
1116 unsigned long flags;
1118 if (edge_port == NULL)
1121 /* get a pointer to the Tx fifo */
1122 fifo = &edge_port->txfifo;
1124 spin_lock_irqsave(&edge_port->ep_lock, flags);
1126 /* calculate number of bytes to put in fifo */
1127 copySize = min((unsigned int)count,
1128 (edge_port->txCredits - fifo->count));
1130 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1131 __func__, count, edge_port->txCredits - fifo->count, copySize);
1133 /* catch writes of 0 bytes which the tty driver likes to give us,
1134 and when txCredits is empty */
1135 if (copySize == 0) {
1136 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1141 * since we can never overflow the buffer we do not have to check for a
1144 * the copy is done is two parts -- first fill to the end of the buffer
1145 * then copy the reset from the start of the buffer
1147 bytesleft = fifo->size - fifo->head;
1148 firsthalf = min(bytesleft, copySize);
1149 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1150 firsthalf, bytesleft);
1152 /* now copy our data */
1153 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1154 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1156 /* update the index and size */
1157 fifo->head += firsthalf;
1158 fifo->count += firsthalf;
1160 /* wrap the index */
1161 if (fifo->head == fifo->size)
1164 secondhalf = copySize-firsthalf;
1167 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1168 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1169 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
1170 /* update the index and size */
1171 fifo->count += secondhalf;
1172 fifo->head += secondhalf;
1173 /* No need to check for wrap since we can not get to end of
1174 * the fifo in this part
1179 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1181 send_more_port_data((struct edgeport_serial *)
1182 usb_get_serial_data(port->serial), edge_port);
1184 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1185 __func__, copySize, edge_port->txCredits, fifo->count);
1191 /************************************************************************
1193 * send_more_port_data()
1195 * This routine attempts to write additional UART transmit data
1196 * to a port over the USB bulk pipe. It is called (1) when new
1197 * data has been written to a port's TxBuffer from higher layers
1198 * (2) when the peripheral sends us additional TxCredits indicating
1199 * that it can accept more Tx data for a given port; and (3) when
1200 * a bulk write completes successfully and we want to see if we
1201 * can transmit more.
1203 ************************************************************************/
1204 static void send_more_port_data(struct edgeport_serial *edge_serial,
1205 struct edgeport_port *edge_port)
1207 struct TxFifo *fifo = &edge_port->txfifo;
1208 struct device *dev = &edge_port->port->dev;
1210 unsigned char *buffer;
1216 unsigned long flags;
1218 spin_lock_irqsave(&edge_port->ep_lock, flags);
1220 if (edge_port->write_in_progress ||
1222 (fifo->count == 0)) {
1223 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1224 __func__, fifo->count, edge_port->write_in_progress);
1228 /* since the amount of data in the fifo will always fit into the
1229 * edgeport buffer we do not need to check the write length
1231 * Do we have enough credits for this port to make it worthwhile
1232 * to bother queueing a write. If it's too small, say a few bytes,
1233 * it's better to wait for more credits so we can do a larger write.
1235 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1236 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1237 __func__, fifo->count, edge_port->txCredits);
1241 /* lock this write */
1242 edge_port->write_in_progress = true;
1244 /* get a pointer to the write_urb */
1245 urb = edge_port->write_urb;
1247 /* make sure transfer buffer is freed */
1248 kfree(urb->transfer_buffer);
1249 urb->transfer_buffer = NULL;
1251 /* build the data header for the buffer and port that we are about
1253 count = fifo->count;
1254 buffer = kmalloc(count+2, GFP_ATOMIC);
1256 edge_port->write_in_progress = false;
1259 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1260 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1262 /* now copy our data */
1263 bytesleft = fifo->size - fifo->tail;
1264 firsthalf = min(bytesleft, count);
1265 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1266 fifo->tail += firsthalf;
1267 fifo->count -= firsthalf;
1268 if (fifo->tail == fifo->size)
1271 secondhalf = count-firsthalf;
1273 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1275 fifo->tail += secondhalf;
1276 fifo->count -= secondhalf;
1280 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1282 /* fill up the urb with all of our data and submit it */
1283 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1284 usb_sndbulkpipe(edge_serial->serial->dev,
1285 edge_serial->bulk_out_endpoint),
1287 edge_bulk_out_data_callback, edge_port);
1289 /* decrement the number of credits we have by the number we just sent */
1290 edge_port->txCredits -= count;
1291 edge_port->port->icount.tx += count;
1293 status = usb_submit_urb(urb, GFP_ATOMIC);
1295 /* something went wrong */
1296 dev_err_console(edge_port->port,
1297 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1299 edge_port->write_in_progress = false;
1301 /* revert the credits as something bad happened. */
1302 edge_port->txCredits += count;
1303 edge_port->port->icount.tx -= count;
1305 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1306 __func__, count, edge_port->txCredits, fifo->count);
1309 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1313 /*****************************************************************************
1315 * this function is called by the tty driver when it wants to know how
1316 * many bytes of data we can accept for a specific port. If successful,
1317 * we return the amount of room that we have for this port (the txCredits)
1318 * otherwise we return a negative error number.
1319 *****************************************************************************/
1320 static int edge_write_room(struct tty_struct *tty)
1322 struct usb_serial_port *port = tty->driver_data;
1323 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1325 unsigned long flags;
1327 if (edge_port == NULL)
1329 if (edge_port->closePending)
1332 if (!edge_port->open) {
1333 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1337 /* total of both buffers is still txCredit */
1338 spin_lock_irqsave(&edge_port->ep_lock, flags);
1339 room = edge_port->txCredits - edge_port->txfifo.count;
1340 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1342 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1347 /*****************************************************************************
1348 * edge_chars_in_buffer
1349 * this function is called by the tty driver when it wants to know how
1350 * many bytes of data we currently have outstanding in the port (data that
1351 * has been written, but hasn't made it out the port yet)
1352 * If successful, we return the number of bytes left to be written in the
1354 * Otherwise we return a negative error number.
1355 *****************************************************************************/
1356 static int edge_chars_in_buffer(struct tty_struct *tty)
1358 struct usb_serial_port *port = tty->driver_data;
1359 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1361 unsigned long flags;
1363 if (edge_port == NULL)
1365 if (edge_port->closePending)
1368 if (!edge_port->open) {
1369 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1373 spin_lock_irqsave(&edge_port->ep_lock, flags);
1374 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1375 edge_port->txfifo.count;
1376 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1378 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars);
1385 /*****************************************************************************
1387 * this function is called by the tty driver when it wants to stop the data
1388 * being read from the port.
1389 *****************************************************************************/
1390 static void edge_throttle(struct tty_struct *tty)
1392 struct usb_serial_port *port = tty->driver_data;
1393 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1396 if (edge_port == NULL)
1399 if (!edge_port->open) {
1400 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1404 /* if we are implementing XON/XOFF, send the stop character */
1406 unsigned char stop_char = STOP_CHAR(tty);
1407 status = edge_write(tty, port, &stop_char, 1);
1412 /* if we are implementing RTS/CTS, toggle that line */
1413 if (C_CRTSCTS(tty)) {
1414 edge_port->shadowMCR &= ~MCR_RTS;
1415 status = send_cmd_write_uart_register(edge_port, MCR,
1416 edge_port->shadowMCR);
1423 /*****************************************************************************
1425 * this function is called by the tty driver when it wants to resume the
1426 * data being read from the port (called after SerialThrottle is called)
1427 *****************************************************************************/
1428 static void edge_unthrottle(struct tty_struct *tty)
1430 struct usb_serial_port *port = tty->driver_data;
1431 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1434 if (edge_port == NULL)
1437 if (!edge_port->open) {
1438 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1442 /* if we are implementing XON/XOFF, send the start character */
1444 unsigned char start_char = START_CHAR(tty);
1445 status = edge_write(tty, port, &start_char, 1);
1449 /* if we are implementing RTS/CTS, toggle that line */
1450 if (C_CRTSCTS(tty)) {
1451 edge_port->shadowMCR |= MCR_RTS;
1452 send_cmd_write_uart_register(edge_port, MCR,
1453 edge_port->shadowMCR);
1458 /*****************************************************************************
1460 * this function is called by the tty driver when it wants to change
1461 * the termios structure
1462 *****************************************************************************/
1463 static void edge_set_termios(struct tty_struct *tty,
1464 struct usb_serial_port *port, struct ktermios *old_termios)
1466 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1469 cflag = tty->termios.c_cflag;
1470 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag);
1471 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag);
1473 if (edge_port == NULL)
1476 if (!edge_port->open) {
1477 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1481 /* change the port settings to the new ones specified */
1482 change_port_settings(tty, edge_port, old_termios);
1486 /*****************************************************************************
1487 * get_lsr_info - get line status register info
1489 * Purpose: Let user call ioctl() to get info when the UART physically
1490 * is emptied. On bus types like RS485, the transmitter must
1491 * release the bus after transmitting. This must be done when
1492 * the transmit shift register is empty, not be done when the
1493 * transmit holding register is empty. This functionality
1494 * allows an RS485 driver to be written in user space.
1495 *****************************************************************************/
1496 static int get_lsr_info(struct edgeport_port *edge_port,
1497 unsigned int __user *value)
1499 unsigned int result = 0;
1500 unsigned long flags;
1502 spin_lock_irqsave(&edge_port->ep_lock, flags);
1503 if (edge_port->maxTxCredits == edge_port->txCredits &&
1504 edge_port->txfifo.count == 0) {
1505 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1506 result = TIOCSER_TEMT;
1508 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1510 if (copy_to_user(value, &result, sizeof(int)))
1515 static int edge_tiocmset(struct tty_struct *tty,
1516 unsigned int set, unsigned int clear)
1518 struct usb_serial_port *port = tty->driver_data;
1519 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1522 mcr = edge_port->shadowMCR;
1523 if (set & TIOCM_RTS)
1525 if (set & TIOCM_DTR)
1527 if (set & TIOCM_LOOP)
1528 mcr |= MCR_LOOPBACK;
1530 if (clear & TIOCM_RTS)
1532 if (clear & TIOCM_DTR)
1534 if (clear & TIOCM_LOOP)
1535 mcr &= ~MCR_LOOPBACK;
1537 edge_port->shadowMCR = mcr;
1539 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1544 static int edge_tiocmget(struct tty_struct *tty)
1546 struct usb_serial_port *port = tty->driver_data;
1547 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1548 unsigned int result = 0;
1552 msr = edge_port->shadowMSR;
1553 mcr = edge_port->shadowMCR;
1554 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1555 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1556 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1557 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1558 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1559 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1564 static int get_serial_info(struct edgeport_port *edge_port,
1565 struct serial_struct __user *retinfo)
1567 struct serial_struct tmp;
1569 memset(&tmp, 0, sizeof(tmp));
1571 tmp.type = PORT_16550A;
1572 tmp.line = edge_port->port->minor;
1573 tmp.port = edge_port->port->port_number;
1575 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1576 tmp.baud_base = 9600;
1577 tmp.close_delay = 5*HZ;
1578 tmp.closing_wait = 30*HZ;
1580 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1586 /*****************************************************************************
1588 * this function handles any ioctl calls to the driver
1589 *****************************************************************************/
1590 static int edge_ioctl(struct tty_struct *tty,
1591 unsigned int cmd, unsigned long arg)
1593 struct usb_serial_port *port = tty->driver_data;
1595 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1599 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
1600 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1603 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
1604 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1606 return -ENOIOCTLCMD;
1610 /*****************************************************************************
1612 * this function sends a break to the port
1613 *****************************************************************************/
1614 static void edge_break(struct tty_struct *tty, int break_state)
1616 struct usb_serial_port *port = tty->driver_data;
1617 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1618 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1621 if (!edge_serial->is_epic ||
1622 edge_serial->epic_descriptor.Supports.IOSPChase) {
1623 /* flush and chase */
1624 edge_port->chaseResponsePending = true;
1626 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1627 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1629 /* block until chase finished */
1630 block_until_chase_response(edge_port);
1632 edge_port->chaseResponsePending = false;
1636 if (!edge_serial->is_epic ||
1637 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) {
1638 if (break_state == -1) {
1639 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
1640 status = send_iosp_ext_cmd(edge_port,
1641 IOSP_CMD_SET_BREAK, 0);
1643 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
1644 status = send_iosp_ext_cmd(edge_port,
1645 IOSP_CMD_CLEAR_BREAK, 0);
1648 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
1654 /*****************************************************************************
1656 * this function handles the data received on the bulk in pipe.
1657 *****************************************************************************/
1658 static void process_rcvd_data(struct edgeport_serial *edge_serial,
1659 unsigned char *buffer, __u16 bufferLength)
1661 struct device *dev = &edge_serial->serial->dev->dev;
1662 struct usb_serial_port *port;
1663 struct edgeport_port *edge_port;
1664 __u16 lastBufferLength;
1667 lastBufferLength = bufferLength + 1;
1669 while (bufferLength > 0) {
1670 /* failsafe incase we get a message that we don't understand */
1671 if (lastBufferLength == bufferLength) {
1672 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1675 lastBufferLength = bufferLength;
1677 switch (edge_serial->rxState) {
1679 edge_serial->rxHeader1 = *buffer;
1683 if (bufferLength == 0) {
1684 edge_serial->rxState = EXPECT_HDR2;
1687 /* otherwise, drop on through */
1689 edge_serial->rxHeader2 = *buffer;
1693 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1694 edge_serial->rxHeader1, edge_serial->rxHeader2);
1695 /* Process depending on whether this header is
1698 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1699 /* Decode this status header and go to
1700 * EXPECT_HDR1 (if we can process the status
1701 * with only 2 bytes), or go to EXPECT_HDR3 to
1702 * get the third byte. */
1703 edge_serial->rxPort =
1704 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1705 edge_serial->rxStatusCode =
1706 IOSP_GET_STATUS_CODE(
1707 edge_serial->rxHeader1);
1709 if (!IOSP_STATUS_IS_2BYTE(
1710 edge_serial->rxStatusCode)) {
1711 /* This status needs additional bytes.
1712 * Save what we have and then wait for
1715 edge_serial->rxStatusParam
1716 = edge_serial->rxHeader2;
1717 edge_serial->rxState = EXPECT_HDR3;
1720 /* We have all the header bytes, process the
1722 process_rcvd_status(edge_serial,
1723 edge_serial->rxHeader2, 0);
1724 edge_serial->rxState = EXPECT_HDR1;
1727 edge_serial->rxPort =
1728 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1729 edge_serial->rxBytesRemaining =
1730 IOSP_GET_HDR_DATA_LEN(
1731 edge_serial->rxHeader1,
1732 edge_serial->rxHeader2);
1733 dev_dbg(dev, "%s - Data for Port %u Len %u\n",
1735 edge_serial->rxPort,
1736 edge_serial->rxBytesRemaining);
1738 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1739 * ASSERT(DevExt->RxBytesRemaining <
1740 * IOSP_MAX_DATA_LENGTH);
1743 if (bufferLength == 0) {
1744 edge_serial->rxState = EXPECT_DATA;
1747 /* Else, drop through */
1749 case EXPECT_DATA: /* Expect data */
1750 if (bufferLength < edge_serial->rxBytesRemaining) {
1751 rxLen = bufferLength;
1752 /* Expect data to start next buffer */
1753 edge_serial->rxState = EXPECT_DATA;
1755 /* BufLen >= RxBytesRemaining */
1756 rxLen = edge_serial->rxBytesRemaining;
1757 /* Start another header next time */
1758 edge_serial->rxState = EXPECT_HDR1;
1761 bufferLength -= rxLen;
1762 edge_serial->rxBytesRemaining -= rxLen;
1764 /* spit this data back into the tty driver if this
1767 port = edge_serial->serial->port[
1768 edge_serial->rxPort];
1769 edge_port = usb_get_serial_port_data(port);
1770 if (edge_port->open) {
1771 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1773 edge_serial->rxPort);
1774 edge_tty_recv(edge_port->port, buffer,
1776 edge_port->port->icount.rx += rxLen;
1782 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1783 edge_serial->rxHeader3 = *buffer;
1787 /* We have all the header bytes, process the
1789 process_rcvd_status(edge_serial,
1790 edge_serial->rxStatusParam,
1791 edge_serial->rxHeader3);
1792 edge_serial->rxState = EXPECT_HDR1;
1799 /*****************************************************************************
1800 * process_rcvd_status
1801 * this function handles the any status messages received on the
1803 *****************************************************************************/
1804 static void process_rcvd_status(struct edgeport_serial *edge_serial,
1805 __u8 byte2, __u8 byte3)
1807 struct usb_serial_port *port;
1808 struct edgeport_port *edge_port;
1809 struct tty_struct *tty;
1811 __u8 code = edge_serial->rxStatusCode;
1813 /* switch the port pointer to the one being currently talked about */
1814 port = edge_serial->serial->port[edge_serial->rxPort];
1815 edge_port = usb_get_serial_port_data(port);
1816 if (edge_port == NULL) {
1817 dev_err(&edge_serial->serial->dev->dev,
1818 "%s - edge_port == NULL for port %d\n",
1819 __func__, edge_serial->rxPort);
1824 if (code == IOSP_EXT_STATUS) {
1826 case IOSP_EXT_STATUS_CHASE_RSP:
1827 /* we want to do EXT status regardless of port
1829 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1830 __func__, edge_serial->rxPort, byte3);
1831 /* Currently, the only EXT_STATUS is Chase, so process
1832 * here instead of one more call to one more subroutine
1833 * If/when more EXT_STATUS, there'll be more work to do
1834 * Also, we currently clear flag and close the port
1835 * regardless of content of above's Byte3.
1836 * We could choose to do something else when Byte3 says
1837 * Timeout on Chase from Edgeport, like wait longer in
1838 * block_until_chase_response, but for now we don't.
1840 edge_port->chaseResponsePending = false;
1841 wake_up(&edge_port->wait_chase);
1844 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1845 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1846 __func__, edge_serial->rxPort, byte3);
1847 /* Port->RxCheckRsp = true; */
1852 if (code == IOSP_STATUS_OPEN_RSP) {
1853 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1854 edge_port->maxTxCredits = edge_port->txCredits;
1855 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1856 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1857 handle_new_msr(edge_port, byte2);
1859 /* send the current line settings to the port so we are
1860 in sync with any further termios calls */
1861 tty = tty_port_tty_get(&edge_port->port->port);
1863 change_port_settings(tty,
1864 edge_port, &tty->termios);
1868 /* we have completed the open */
1869 edge_port->openPending = false;
1870 edge_port->open = true;
1871 wake_up(&edge_port->wait_open);
1875 /* If port is closed, silently discard all rcvd status. We can
1876 * have cases where buffered status is received AFTER the close
1877 * port command is sent to the Edgeport.
1879 if (!edge_port->open || edge_port->closePending)
1883 /* Not currently sent by Edgeport */
1884 case IOSP_STATUS_LSR:
1885 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1886 __func__, edge_serial->rxPort, byte2);
1887 handle_new_lsr(edge_port, false, byte2, 0);
1890 case IOSP_STATUS_LSR_DATA:
1891 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1892 __func__, edge_serial->rxPort, byte2, byte3);
1893 /* byte2 is LSR Register */
1894 /* byte3 is broken data byte */
1895 handle_new_lsr(edge_port, true, byte2, byte3);
1898 * case IOSP_EXT_4_STATUS:
1899 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1900 * __func__, edge_serial->rxPort, byte2, byte3);
1903 case IOSP_STATUS_MSR:
1904 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1905 __func__, edge_serial->rxPort, byte2);
1907 * Process this new modem status and generate appropriate
1908 * events, etc, based on the new status. This routine
1909 * also saves the MSR in Port->ShadowMsr.
1911 handle_new_msr(edge_port, byte2);
1915 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
1921 /*****************************************************************************
1923 * this function passes data on to the tty flip buffer
1924 *****************************************************************************/
1925 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1930 cnt = tty_insert_flip_string(&port->port, data, length);
1932 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1933 __func__, length - cnt);
1938 tty_flip_buffer_push(&port->port);
1942 /*****************************************************************************
1944 * this function handles any change to the msr register for a port.
1945 *****************************************************************************/
1946 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
1948 struct async_icount *icount;
1950 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1951 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1952 icount = &edge_port->port->icount;
1954 /* update input line counters */
1955 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1957 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1959 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1961 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1963 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1966 /* Save the new modem status */
1967 edge_port->shadowMSR = newMsr & 0xf0;
1971 /*****************************************************************************
1973 * this function handles any change to the lsr register for a port.
1974 *****************************************************************************/
1975 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
1976 __u8 lsr, __u8 data)
1978 __u8 newLsr = (__u8) (lsr & (__u8)
1979 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1980 struct async_icount *icount;
1982 edge_port->shadowLSR = lsr;
1984 if (newLsr & LSR_BREAK) {
1986 * Parity and Framing errors only count if they
1987 * occur exclusive of a break being
1990 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1993 /* Place LSR data byte into Rx buffer */
1995 edge_tty_recv(edge_port->port, &data, 1);
1997 /* update input line counters */
1998 icount = &edge_port->port->icount;
1999 if (newLsr & LSR_BREAK)
2001 if (newLsr & LSR_OVER_ERR)
2003 if (newLsr & LSR_PAR_ERR)
2005 if (newLsr & LSR_FRM_ERR)
2010 /****************************************************************************
2012 * writes a number of bytes to the Edgeport device's sram starting at the
2014 * If successful returns the number of bytes written, otherwise it returns
2015 * a negative error number of the problem.
2016 ****************************************************************************/
2017 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2018 __u16 length, const __u8 *data)
2021 __u16 current_length;
2022 unsigned char *transfer_buffer;
2024 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
2026 transfer_buffer = kmalloc(64, GFP_KERNEL);
2027 if (!transfer_buffer)
2030 /* need to split these writes up into 64 byte chunks */
2032 while (length > 0) {
2034 current_length = 64;
2036 current_length = length;
2038 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
2039 memcpy(transfer_buffer, data, current_length);
2040 result = usb_control_msg(serial->dev,
2041 usb_sndctrlpipe(serial->dev, 0),
2042 USB_REQUEST_ION_WRITE_RAM,
2043 0x40, addr, extAddr, transfer_buffer,
2044 current_length, 300);
2047 length -= current_length;
2048 addr += current_length;
2049 data += current_length;
2052 kfree(transfer_buffer);
2057 /****************************************************************************
2059 * writes a number of bytes to the Edgeport device's ROM starting at the
2061 * If successful returns the number of bytes written, otherwise it returns
2062 * a negative error number of the problem.
2063 ****************************************************************************/
2064 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2065 __u16 length, const __u8 *data)
2068 __u16 current_length;
2069 unsigned char *transfer_buffer;
2071 transfer_buffer = kmalloc(64, GFP_KERNEL);
2072 if (!transfer_buffer)
2075 /* need to split these writes up into 64 byte chunks */
2077 while (length > 0) {
2079 current_length = 64;
2081 current_length = length;
2082 memcpy(transfer_buffer, data, current_length);
2083 result = usb_control_msg(serial->dev,
2084 usb_sndctrlpipe(serial->dev, 0),
2085 USB_REQUEST_ION_WRITE_ROM, 0x40,
2087 transfer_buffer, current_length, 300);
2090 length -= current_length;
2091 addr += current_length;
2092 data += current_length;
2095 kfree(transfer_buffer);
2100 /****************************************************************************
2102 * reads a number of bytes from the Edgeport device starting at the given
2104 * Returns zero on success or a negative error number.
2105 ****************************************************************************/
2106 static int rom_read(struct usb_serial *serial, __u16 extAddr,
2107 __u16 addr, __u16 length, __u8 *data)
2110 __u16 current_length;
2111 unsigned char *transfer_buffer;
2113 transfer_buffer = kmalloc(64, GFP_KERNEL);
2114 if (!transfer_buffer)
2117 /* need to split these reads up into 64 byte chunks */
2119 while (length > 0) {
2121 current_length = 64;
2123 current_length = length;
2124 result = usb_control_msg(serial->dev,
2125 usb_rcvctrlpipe(serial->dev, 0),
2126 USB_REQUEST_ION_READ_ROM,
2127 0xC0, addr, extAddr, transfer_buffer,
2128 current_length, 300);
2129 if (result < current_length) {
2134 memcpy(data, transfer_buffer, current_length);
2135 length -= current_length;
2136 addr += current_length;
2137 data += current_length;
2142 kfree(transfer_buffer);
2147 /****************************************************************************
2149 * Is used to send a IOSP message to the Edgeport device
2150 ****************************************************************************/
2151 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2152 __u8 command, __u8 param)
2154 unsigned char *buffer;
2155 unsigned char *currentCommand;
2159 buffer = kmalloc(10, GFP_ATOMIC);
2163 currentCommand = buffer;
2165 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number,
2168 status = write_cmd_usb(edge_port, buffer, length);
2170 /* something bad happened, let's free up the memory */
2178 /*****************************************************************************
2180 * this function writes the given buffer out to the bulk write endpoint.
2181 *****************************************************************************/
2182 static int write_cmd_usb(struct edgeport_port *edge_port,
2183 unsigned char *buffer, int length)
2185 struct edgeport_serial *edge_serial =
2186 usb_get_serial_data(edge_port->port->serial);
2187 struct device *dev = &edge_port->port->dev;
2191 usb_serial_debug_data(dev, __func__, length, buffer);
2193 /* Allocate our next urb */
2194 urb = usb_alloc_urb(0, GFP_ATOMIC);
2198 atomic_inc(&CmdUrbs);
2199 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2200 __func__, urb, atomic_read(&CmdUrbs));
2202 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2203 usb_sndbulkpipe(edge_serial->serial->dev,
2204 edge_serial->bulk_out_endpoint),
2205 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2207 edge_port->commandPending = true;
2208 status = usb_submit_urb(urb, GFP_ATOMIC);
2211 /* something went wrong */
2212 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2216 atomic_dec(&CmdUrbs);
2221 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2223 if (edge_port->commandPending) {
2224 /* command timed out */
2225 dev_dbg(dev, "%s - command timed out\n", __func__);
2233 /*****************************************************************************
2234 * send_cmd_write_baud_rate
2235 * this function sends the proper command to change the baud rate of the
2237 *****************************************************************************/
2238 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2241 struct edgeport_serial *edge_serial =
2242 usb_get_serial_data(edge_port->port->serial);
2243 struct device *dev = &edge_port->port->dev;
2244 unsigned char *cmdBuffer;
2245 unsigned char *currCmd;
2249 u32 number = edge_port->port->port_number;
2251 if (edge_serial->is_epic &&
2252 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2253 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2258 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
2260 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
2262 dev_err(dev, "%s - bad baud rate\n", __func__);
2266 /* Alloc memory for the string of commands. */
2267 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2271 currCmd = cmdBuffer;
2273 /* Enable access to divisor latch */
2274 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2276 /* Write the divisor itself */
2277 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2278 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2280 /* Restore original value to disable access to divisor latch */
2281 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2282 edge_port->shadowLCR);
2284 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2286 /* something bad happened, let's free up the memory */
2294 /*****************************************************************************
2295 * calc_baud_rate_divisor
2296 * this function calculates the proper baud rate divisor for the specified
2298 *****************************************************************************/
2299 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
2304 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2305 if (divisor_table[i].BaudRate == baudrate) {
2306 *divisor = divisor_table[i].Divisor;
2311 /* We have tried all of the standard baud rates
2312 * lets try to calculate the divisor for this baud rate
2313 * Make sure the baud rate is reasonable */
2314 if (baudrate > 50 && baudrate < 230400) {
2316 custom = (__u16)((230400L + baudrate/2) / baudrate);
2320 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
2328 /*****************************************************************************
2329 * send_cmd_write_uart_register
2330 * this function builds up a uart register message and sends to the device.
2331 *****************************************************************************/
2332 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2333 __u8 regNum, __u8 regValue)
2335 struct edgeport_serial *edge_serial =
2336 usb_get_serial_data(edge_port->port->serial);
2337 struct device *dev = &edge_port->port->dev;
2338 unsigned char *cmdBuffer;
2339 unsigned char *currCmd;
2340 unsigned long cmdLen = 0;
2343 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2344 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2346 if (edge_serial->is_epic &&
2347 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2349 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2353 if (edge_serial->is_epic &&
2354 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2356 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2360 /* Alloc memory for the string of commands. */
2361 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2362 if (cmdBuffer == NULL)
2365 currCmd = cmdBuffer;
2367 /* Build a cmd in the buffer to write the given register */
2368 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2371 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2373 /* something bad happened, let's free up the memory */
2381 /*****************************************************************************
2382 * change_port_settings
2383 * This routine is called to set the UART on the device to match the
2384 * specified new settings.
2385 *****************************************************************************/
2387 static void change_port_settings(struct tty_struct *tty,
2388 struct edgeport_port *edge_port, struct ktermios *old_termios)
2390 struct device *dev = &edge_port->port->dev;
2391 struct edgeport_serial *edge_serial =
2392 usb_get_serial_data(edge_port->port->serial);
2403 if (!edge_port->open &&
2404 !edge_port->openPending) {
2405 dev_dbg(dev, "%s - port not opened\n", __func__);
2409 cflag = tty->termios.c_cflag;
2411 switch (cflag & CSIZE) {
2413 lData = LCR_BITS_5; mask = 0x1f;
2414 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2417 lData = LCR_BITS_6; mask = 0x3f;
2418 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2421 lData = LCR_BITS_7; mask = 0x7f;
2422 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2427 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2431 lParity = LCR_PAR_NONE;
2432 if (cflag & PARENB) {
2433 if (cflag & CMSPAR) {
2434 if (cflag & PARODD) {
2435 lParity = LCR_PAR_MARK;
2436 dev_dbg(dev, "%s - parity = mark\n", __func__);
2438 lParity = LCR_PAR_SPACE;
2439 dev_dbg(dev, "%s - parity = space\n", __func__);
2441 } else if (cflag & PARODD) {
2442 lParity = LCR_PAR_ODD;
2443 dev_dbg(dev, "%s - parity = odd\n", __func__);
2445 lParity = LCR_PAR_EVEN;
2446 dev_dbg(dev, "%s - parity = even\n", __func__);
2449 dev_dbg(dev, "%s - parity = none\n", __func__);
2452 if (cflag & CSTOPB) {
2454 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2457 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2460 /* figure out the flow control settings */
2461 rxFlow = txFlow = 0x00;
2462 if (cflag & CRTSCTS) {
2463 rxFlow |= IOSP_RX_FLOW_RTS;
2464 txFlow |= IOSP_TX_FLOW_CTS;
2465 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2467 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2470 /* if we are implementing XON/XOFF, set the start and stop character
2472 if (I_IXOFF(tty) || I_IXON(tty)) {
2473 unsigned char stop_char = STOP_CHAR(tty);
2474 unsigned char start_char = START_CHAR(tty);
2476 if (!edge_serial->is_epic ||
2477 edge_serial->epic_descriptor.Supports.IOSPSetXChar) {
2478 send_iosp_ext_cmd(edge_port,
2479 IOSP_CMD_SET_XON_CHAR, start_char);
2480 send_iosp_ext_cmd(edge_port,
2481 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2484 /* if we are implementing INBOUND XON/XOFF */
2486 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2487 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2488 __func__, start_char, stop_char);
2490 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2493 /* if we are implementing OUTBOUND XON/XOFF */
2495 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2496 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2497 __func__, start_char, stop_char);
2499 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2503 /* Set flow control to the configured value */
2504 if (!edge_serial->is_epic ||
2505 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)
2506 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2507 if (!edge_serial->is_epic ||
2508 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)
2509 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2512 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2513 edge_port->shadowLCR |= (lData | lParity | lStop);
2515 edge_port->validDataMask = mask;
2517 /* Send the updated LCR value to the EdgePort */
2518 status = send_cmd_write_uart_register(edge_port, LCR,
2519 edge_port->shadowLCR);
2523 /* set up the MCR register and send it to the EdgePort */
2524 edge_port->shadowMCR = MCR_MASTER_IE;
2526 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2528 status = send_cmd_write_uart_register(edge_port, MCR,
2529 edge_port->shadowMCR);
2533 /* Determine divisor based on baud rate */
2534 baud = tty_get_baud_rate(tty);
2536 /* pick a default, any default... */
2540 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
2541 status = send_cmd_write_baud_rate(edge_port, baud);
2543 /* Speed change was not possible - put back the old speed */
2544 baud = tty_termios_baud_rate(old_termios);
2545 tty_encode_baud_rate(tty, baud, baud);
2550 /****************************************************************************
2552 * Turns a string from Unicode into ASCII.
2553 * Doesn't do a good job with any characters that are outside the normal
2554 * ASCII range, but it's only for debugging...
2555 * NOTE: expects the unicode in LE format
2556 ****************************************************************************/
2557 static void unicode_to_ascii(char *string, int buflen,
2558 __le16 *unicode, int unicode_size)
2562 if (buflen <= 0) /* never happens, but... */
2564 --buflen; /* space for nul */
2566 for (i = 0; i < unicode_size; i++) {
2569 string[i] = (char)(le16_to_cpu(unicode[i]));
2575 /****************************************************************************
2576 * get_manufacturing_desc
2577 * reads in the manufacturing descriptor and stores it into the serial
2579 ****************************************************************************/
2580 static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2582 struct device *dev = &edge_serial->serial->dev->dev;
2585 dev_dbg(dev, "getting manufacturer descriptor\n");
2587 response = rom_read(edge_serial->serial,
2588 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2589 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2590 EDGE_MANUF_DESC_LEN,
2591 (__u8 *)(&edge_serial->manuf_descriptor));
2594 dev_err(dev, "error in getting manufacturer descriptor: %d\n",
2598 dev_dbg(dev, "**Manufacturer Descriptor\n");
2599 dev_dbg(dev, " RomSize: %dK\n",
2600 edge_serial->manuf_descriptor.RomSize);
2601 dev_dbg(dev, " RamSize: %dK\n",
2602 edge_serial->manuf_descriptor.RamSize);
2603 dev_dbg(dev, " CpuRev: %d\n",
2604 edge_serial->manuf_descriptor.CpuRev);
2605 dev_dbg(dev, " BoardRev: %d\n",
2606 edge_serial->manuf_descriptor.BoardRev);
2607 dev_dbg(dev, " NumPorts: %d\n",
2608 edge_serial->manuf_descriptor.NumPorts);
2609 dev_dbg(dev, " DescDate: %d/%d/%d\n",
2610 edge_serial->manuf_descriptor.DescDate[0],
2611 edge_serial->manuf_descriptor.DescDate[1],
2612 edge_serial->manuf_descriptor.DescDate[2]+1900);
2613 unicode_to_ascii(string, sizeof(string),
2614 edge_serial->manuf_descriptor.SerialNumber,
2615 edge_serial->manuf_descriptor.SerNumLength/2);
2616 dev_dbg(dev, " SerialNumber: %s\n", string);
2617 unicode_to_ascii(string, sizeof(string),
2618 edge_serial->manuf_descriptor.AssemblyNumber,
2619 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2620 dev_dbg(dev, " AssemblyNumber: %s\n", string);
2621 unicode_to_ascii(string, sizeof(string),
2622 edge_serial->manuf_descriptor.OemAssyNumber,
2623 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2624 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2625 dev_dbg(dev, " UartType: %d\n",
2626 edge_serial->manuf_descriptor.UartType);
2627 dev_dbg(dev, " IonPid: %d\n",
2628 edge_serial->manuf_descriptor.IonPid);
2629 dev_dbg(dev, " IonConfig: %d\n",
2630 edge_serial->manuf_descriptor.IonConfig);
2635 /****************************************************************************
2637 * reads in the bootloader descriptor and stores it into the serial
2639 ****************************************************************************/
2640 static void get_boot_desc(struct edgeport_serial *edge_serial)
2642 struct device *dev = &edge_serial->serial->dev->dev;
2645 dev_dbg(dev, "getting boot descriptor\n");
2647 response = rom_read(edge_serial->serial,
2648 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2649 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2651 (__u8 *)(&edge_serial->boot_descriptor));
2654 dev_err(dev, "error in getting boot descriptor: %d\n",
2657 dev_dbg(dev, "**Boot Descriptor:\n");
2658 dev_dbg(dev, " BootCodeLength: %d\n",
2659 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2660 dev_dbg(dev, " MajorVersion: %d\n",
2661 edge_serial->boot_descriptor.MajorVersion);
2662 dev_dbg(dev, " MinorVersion: %d\n",
2663 edge_serial->boot_descriptor.MinorVersion);
2664 dev_dbg(dev, " BuildNumber: %d\n",
2665 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2666 dev_dbg(dev, " Capabilities: 0x%x\n",
2667 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2668 dev_dbg(dev, " UConfig0: %d\n",
2669 edge_serial->boot_descriptor.UConfig0);
2670 dev_dbg(dev, " UConfig1: %d\n",
2671 edge_serial->boot_descriptor.UConfig1);
2676 /****************************************************************************
2677 * load_application_firmware
2678 * This is called to load the application firmware to the device
2679 ****************************************************************************/
2680 static void load_application_firmware(struct edgeport_serial *edge_serial)
2682 struct device *dev = &edge_serial->serial->dev->dev;
2683 const struct ihex_binrec *rec;
2684 const struct firmware *fw;
2685 const char *fw_name;
2686 const char *fw_info;
2691 switch (edge_serial->product_info.iDownloadFile) {
2692 case EDGE_DOWNLOAD_FILE_I930:
2693 fw_info = "downloading firmware version (930)";
2694 fw_name = "edgeport/down.fw";
2697 case EDGE_DOWNLOAD_FILE_80251:
2698 fw_info = "downloading firmware version (80251)";
2699 fw_name = "edgeport/down2.fw";
2702 case EDGE_DOWNLOAD_FILE_NONE:
2703 dev_dbg(dev, "No download file specified, skipping download\n");
2710 response = request_ihex_firmware(&fw, fw_name,
2711 &edge_serial->serial->dev->dev);
2713 dev_err(dev, "Failed to load image \"%s\" err %d\n",
2718 rec = (const struct ihex_binrec *)fw->data;
2719 build = (rec->data[2] << 8) | rec->data[3];
2721 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
2723 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2724 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2725 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2727 for (rec = ihex_next_binrec(rec); rec;
2728 rec = ihex_next_binrec(rec)) {
2729 Operaddr = be32_to_cpu(rec->addr);
2730 response = sram_write(edge_serial->serial,
2733 be16_to_cpu(rec->len),
2736 dev_err(&edge_serial->serial->dev->dev,
2737 "sram_write failed (%x, %x, %d)\n",
2738 Operaddr >> 16, Operaddr & 0xFFFF,
2739 be16_to_cpu(rec->len));
2744 dev_dbg(dev, "sending exec_dl_code\n");
2745 response = usb_control_msg (edge_serial->serial->dev,
2746 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2747 USB_REQUEST_ION_EXEC_DL_CODE,
2748 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2750 release_firmware(fw);
2754 /****************************************************************************
2756 ****************************************************************************/
2757 static int edge_startup(struct usb_serial *serial)
2759 struct edgeport_serial *edge_serial;
2760 struct usb_device *dev;
2761 struct device *ddev = &serial->dev->dev;
2764 bool interrupt_in_found;
2766 bool bulk_out_found;
2767 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2768 EDGE_COMPATIBILITY_MASK1,
2769 EDGE_COMPATIBILITY_MASK2 };
2771 if (serial->num_bulk_in < 1 || serial->num_interrupt_in < 1) {
2772 dev_err(&serial->interface->dev, "missing endpoints\n");
2778 /* create our private serial structure */
2779 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2783 spin_lock_init(&edge_serial->es_lock);
2784 edge_serial->serial = serial;
2785 usb_set_serial_data(serial, edge_serial);
2787 /* get the name for the device from the device */
2788 i = usb_string(dev, dev->descriptor.iManufacturer,
2789 &edge_serial->name[0], MAX_NAME_LEN+1);
2792 edge_serial->name[i++] = ' ';
2793 usb_string(dev, dev->descriptor.iProduct,
2794 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2796 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2798 /* Read the epic descriptor */
2799 if (get_epic_descriptor(edge_serial) < 0) {
2800 /* memcpy descriptor to Supports structures */
2801 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2802 sizeof(struct edge_compatibility_bits));
2804 /* get the manufacturing descriptor for this device */
2805 get_manufacturing_desc(edge_serial);
2807 /* get the boot descriptor */
2808 get_boot_desc(edge_serial);
2810 get_product_info(edge_serial);
2813 /* set the number of ports from the manufacturing description */
2814 /* serial->num_ports = serial->product_info.NumPorts; */
2815 if ((!edge_serial->is_epic) &&
2816 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2818 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2819 edge_serial->product_info.NumPorts,
2823 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
2825 /* If not an EPiC device */
2826 if (!edge_serial->is_epic) {
2827 /* now load the application firmware into this device */
2828 load_application_firmware(edge_serial);
2830 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
2832 /* Check current Edgeport EEPROM and update if necessary */
2833 update_edgeport_E2PROM(edge_serial);
2835 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
2837 /* set the configuration to use #1 */
2838 /* dev_dbg(ddev, "set_configuration 1\n"); */
2839 /* usb_set_configuration (dev, 1); */
2841 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
2842 edge_serial->product_info.FirmwareMajorVersion,
2843 edge_serial->product_info.FirmwareMinorVersion,
2844 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
2846 /* we set up the pointers to the endpoints in the edge_open function,
2847 * as the structures aren't created yet. */
2851 if (edge_serial->is_epic) {
2852 /* EPIC thing, set up our interrupt polling now and our read
2853 * urb, so that the device knows it really is connected. */
2854 interrupt_in_found = bulk_in_found = bulk_out_found = false;
2855 for (i = 0; i < serial->interface->altsetting[0]
2856 .desc.bNumEndpoints; ++i) {
2857 struct usb_endpoint_descriptor *endpoint;
2860 endpoint = &serial->interface->altsetting[0].
2862 buffer_size = usb_endpoint_maxp(endpoint);
2863 if (!interrupt_in_found &&
2864 (usb_endpoint_is_int_in(endpoint))) {
2865 /* we found a interrupt in endpoint */
2866 dev_dbg(ddev, "found interrupt in\n");
2868 /* not set up yet, so do it now */
2869 edge_serial->interrupt_read_urb =
2870 usb_alloc_urb(0, GFP_KERNEL);
2871 if (!edge_serial->interrupt_read_urb) {
2876 edge_serial->interrupt_in_buffer =
2877 kmalloc(buffer_size, GFP_KERNEL);
2878 if (!edge_serial->interrupt_in_buffer) {
2882 edge_serial->interrupt_in_endpoint =
2883 endpoint->bEndpointAddress;
2885 /* set up our interrupt urb */
2887 edge_serial->interrupt_read_urb,
2890 endpoint->bEndpointAddress),
2891 edge_serial->interrupt_in_buffer,
2893 edge_interrupt_callback,
2895 endpoint->bInterval);
2897 interrupt_in_found = true;
2900 if (!bulk_in_found &&
2901 (usb_endpoint_is_bulk_in(endpoint))) {
2902 /* we found a bulk in endpoint */
2903 dev_dbg(ddev, "found bulk in\n");
2905 /* not set up yet, so do it now */
2906 edge_serial->read_urb =
2907 usb_alloc_urb(0, GFP_KERNEL);
2908 if (!edge_serial->read_urb) {
2913 edge_serial->bulk_in_buffer =
2914 kmalloc(buffer_size, GFP_KERNEL);
2915 if (!edge_serial->bulk_in_buffer) {
2919 edge_serial->bulk_in_endpoint =
2920 endpoint->bEndpointAddress;
2922 /* set up our bulk in urb */
2923 usb_fill_bulk_urb(edge_serial->read_urb, dev,
2924 usb_rcvbulkpipe(dev,
2925 endpoint->bEndpointAddress),
2926 edge_serial->bulk_in_buffer,
2927 usb_endpoint_maxp(endpoint),
2928 edge_bulk_in_callback,
2930 bulk_in_found = true;
2933 if (!bulk_out_found &&
2934 (usb_endpoint_is_bulk_out(endpoint))) {
2935 /* we found a bulk out endpoint */
2936 dev_dbg(ddev, "found bulk out\n");
2937 edge_serial->bulk_out_endpoint =
2938 endpoint->bEndpointAddress;
2939 bulk_out_found = true;
2943 if (response || !interrupt_in_found || !bulk_in_found ||
2946 dev_err(ddev, "expected endpoints not found\n");
2950 usb_free_urb(edge_serial->interrupt_read_urb);
2951 kfree(edge_serial->interrupt_in_buffer);
2953 usb_free_urb(edge_serial->read_urb);
2954 kfree(edge_serial->bulk_in_buffer);
2961 /* start interrupt read for this edgeport this interrupt will
2962 * continue as long as the edgeport is connected */
2963 response = usb_submit_urb(edge_serial->interrupt_read_urb,
2966 dev_err(ddev, "%s - Error %d submitting control urb\n",
2967 __func__, response);
2973 /****************************************************************************
2975 * This function is called whenever the device is removed from the usb bus.
2976 ****************************************************************************/
2977 static void edge_disconnect(struct usb_serial *serial)
2979 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2981 if (edge_serial->is_epic) {
2982 usb_kill_urb(edge_serial->interrupt_read_urb);
2983 usb_kill_urb(edge_serial->read_urb);
2988 /****************************************************************************
2990 * This function is called when the device structure is deallocated.
2991 ****************************************************************************/
2992 static void edge_release(struct usb_serial *serial)
2994 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2996 if (edge_serial->is_epic) {
2997 usb_kill_urb(edge_serial->interrupt_read_urb);
2998 usb_free_urb(edge_serial->interrupt_read_urb);
2999 kfree(edge_serial->interrupt_in_buffer);
3001 usb_kill_urb(edge_serial->read_urb);
3002 usb_free_urb(edge_serial->read_urb);
3003 kfree(edge_serial->bulk_in_buffer);
3009 static int edge_port_probe(struct usb_serial_port *port)
3011 struct edgeport_port *edge_port;
3013 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
3017 spin_lock_init(&edge_port->ep_lock);
3018 edge_port->port = port;
3020 usb_set_serial_port_data(port, edge_port);
3025 static int edge_port_remove(struct usb_serial_port *port)
3027 struct edgeport_port *edge_port;
3029 edge_port = usb_get_serial_port_data(port);
3035 module_usb_serial_driver(serial_drivers, id_table_combined);
3037 MODULE_AUTHOR(DRIVER_AUTHOR);
3038 MODULE_DESCRIPTION(DRIVER_DESC);
3039 MODULE_LICENSE("GPL");
3040 MODULE_FIRMWARE("edgeport/boot.fw");
3041 MODULE_FIRMWARE("edgeport/boot2.fw");
3042 MODULE_FIRMWARE("edgeport/down.fw");
3043 MODULE_FIRMWARE("edgeport/down2.fw");