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/init.h>
36 #include <linux/slab.h>
37 #include <linux/tty.h>
38 #include <linux/tty_driver.h>
39 #include <linux/tty_flip.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/serial.h>
43 #include <linux/ioctl.h>
44 #include <linux/wait.h>
45 #include <linux/firmware.h>
46 #include <linux/ihex.h>
47 #include <linux/uaccess.h>
48 #include <linux/usb.h>
49 #include <linux/usb/serial.h>
50 #include "io_edgeport.h"
51 #include "io_ionsp.h" /* info for the iosp messages */
52 #include "io_16654.h" /* 16654 UART defines */
54 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
55 #define DRIVER_DESC "Edgeport USB Serial Driver"
57 #define MAX_NAME_LEN 64
59 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
61 /* receive port state */
63 EXPECT_HDR1 = 0, /* Expect header byte 1 */
64 EXPECT_HDR2 = 1, /* Expect header byte 2 */
65 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
66 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
71 * This Transmit queue is an extension of the edgeport Rx buffer.
72 * The maximum amount of data buffered in both the edgeport
73 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
76 unsigned int head; /* index to head pointer (write) */
77 unsigned int tail; /* index to tail pointer (read) */
78 unsigned int count; /* Bytes in queue */
79 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
80 unsigned char *fifo; /* allocated Buffer */
83 /* This structure holds all of the local port information */
84 struct edgeport_port {
85 __u16 txCredits; /* our current credits for this port */
86 __u16 maxTxCredits; /* the max size of the port */
88 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
89 struct urb *write_urb; /* write URB for this port */
90 bool write_in_progress; /* 'true' while a write URB is outstanding */
93 __u8 shadowLCR; /* last LCR value received */
94 __u8 shadowMCR; /* last MCR value received */
95 __u8 shadowMSR; /* last MSR value received */
96 __u8 shadowLSR; /* last LSR value received */
97 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
98 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
106 bool chaseResponsePending;
108 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
109 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
110 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
112 struct usb_serial_port *port; /* loop back to the owner of this object */
116 /* This structure holds all of the individual device information */
117 struct edgeport_serial {
118 char name[MAX_NAME_LEN+2]; /* string name of this device */
120 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
121 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
122 struct edgeport_product_info product_info; /* Product Info */
123 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
124 int is_epic; /* flag if EPiC device or not */
126 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
127 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
128 struct urb *interrupt_read_urb; /* our interrupt urb */
130 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
131 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
132 struct urb *read_urb; /* our bulk read urb */
133 bool read_in_progress;
136 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
138 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
140 enum RXSTATE rxState; /* the current state of the bulk receive processor */
141 __u8 rxHeader1; /* receive header byte 1 */
142 __u8 rxHeader2; /* receive header byte 2 */
143 __u8 rxHeader3; /* receive header byte 3 */
144 __u8 rxPort; /* the port that we are currently receiving data for */
145 __u8 rxStatusCode; /* the receive status code */
146 __u8 rxStatusParam; /* the receive status paramater */
147 __s16 rxBytesRemaining; /* the number of port bytes left to read */
148 struct usb_serial *serial; /* loop back to the owner of this object */
151 /* baud rate information */
152 struct divisor_table_entry {
158 * Define table of divisors for Rev A EdgePort/4 hardware
159 * These assume a 3.6864MHz crystal, the standard /16, and
163 static const struct divisor_table_entry divisor_table[] = {
166 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
167 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
185 /* Number of outstanding Command Write Urbs */
186 static atomic_t CmdUrbs = ATOMIC_INIT(0);
189 /* local function prototypes */
191 /* function prototypes for all URB callbacks */
192 static void edge_interrupt_callback(struct urb *urb);
193 static void edge_bulk_in_callback(struct urb *urb);
194 static void edge_bulk_out_data_callback(struct urb *urb);
195 static void edge_bulk_out_cmd_callback(struct urb *urb);
197 /* function prototypes for the usbserial callbacks */
198 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
199 static void edge_close(struct usb_serial_port *port);
200 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
201 const unsigned char *buf, int count);
202 static int edge_write_room(struct tty_struct *tty);
203 static int edge_chars_in_buffer(struct tty_struct *tty);
204 static void edge_throttle(struct tty_struct *tty);
205 static void edge_unthrottle(struct tty_struct *tty);
206 static void edge_set_termios(struct tty_struct *tty,
207 struct usb_serial_port *port,
208 struct ktermios *old_termios);
209 static int edge_ioctl(struct tty_struct *tty,
210 unsigned int cmd, unsigned long arg);
211 static void edge_break(struct tty_struct *tty, int break_state);
212 static int edge_tiocmget(struct tty_struct *tty);
213 static int edge_tiocmset(struct tty_struct *tty,
214 unsigned int set, unsigned int clear);
215 static int edge_startup(struct usb_serial *serial);
216 static void edge_disconnect(struct usb_serial *serial);
217 static void edge_release(struct usb_serial *serial);
218 static int edge_port_probe(struct usb_serial_port *port);
219 static int edge_port_remove(struct usb_serial_port *port);
221 #include "io_tables.h" /* all of the devices that this driver supports */
223 /* function prototypes for all of our local functions */
225 static void process_rcvd_data(struct edgeport_serial *edge_serial,
226 unsigned char *buffer, __u16 bufferLength);
227 static void process_rcvd_status(struct edgeport_serial *edge_serial,
228 __u8 byte2, __u8 byte3);
229 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
231 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
232 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
233 __u8 lsr, __u8 data);
234 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
236 static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor);
237 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
239 static void change_port_settings(struct tty_struct *tty,
240 struct edgeport_port *edge_port,
241 struct ktermios *old_termios);
242 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
243 __u8 regNum, __u8 regValue);
244 static int write_cmd_usb(struct edgeport_port *edge_port,
245 unsigned char *buffer, int writeLength);
246 static void send_more_port_data(struct edgeport_serial *edge_serial,
247 struct edgeport_port *edge_port);
249 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
250 __u16 length, const __u8 *data);
251 static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
252 __u16 length, __u8 *data);
253 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
254 __u16 length, const __u8 *data);
255 static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
256 static void get_boot_desc(struct edgeport_serial *edge_serial);
257 static void load_application_firmware(struct edgeport_serial *edge_serial);
259 static void unicode_to_ascii(char *string, int buflen,
260 __le16 *unicode, int unicode_size);
263 /* ************************************************************************ */
264 /* ************************************************************************ */
265 /* ************************************************************************ */
266 /* ************************************************************************ */
268 /************************************************************************
270 * update_edgeport_E2PROM() Compare current versions of *
271 * Boot ROM and Manufacture *
272 * Descriptors with versions *
273 * embedded in this driver *
275 ************************************************************************/
276 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
278 struct device *dev = &edge_serial->serial->dev->dev;
281 __u8 BootMajorVersion;
282 __u8 BootMinorVersion;
283 __u16 BootBuildNumber;
285 const struct ihex_binrec *rec;
286 const struct firmware *fw;
290 switch (edge_serial->product_info.iDownloadFile) {
291 case EDGE_DOWNLOAD_FILE_I930:
292 fw_name = "edgeport/boot.fw";
294 case EDGE_DOWNLOAD_FILE_80251:
295 fw_name = "edgeport/boot2.fw";
301 response = request_ihex_firmware(&fw, fw_name,
302 &edge_serial->serial->dev->dev);
304 dev_err(dev, "Failed to load image \"%s\" err %d\n",
309 rec = (const struct ihex_binrec *)fw->data;
310 BootMajorVersion = rec->data[0];
311 BootMinorVersion = rec->data[1];
312 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
314 /* Check Boot Image Version */
315 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
316 (edge_serial->boot_descriptor.MinorVersion << 16) +
317 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
319 BootNewVer = (BootMajorVersion << 24) +
320 (BootMinorVersion << 16) +
323 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n",
324 edge_serial->boot_descriptor.MajorVersion,
325 edge_serial->boot_descriptor.MinorVersion,
326 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
329 if (BootNewVer > BootCurVer) {
330 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
331 edge_serial->boot_descriptor.MajorVersion,
332 edge_serial->boot_descriptor.MinorVersion,
333 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
334 BootMajorVersion, BootMinorVersion, BootBuildNumber);
336 dev_dbg(dev, "Downloading new Boot Image\n");
338 for (rec = ihex_next_binrec(rec); rec;
339 rec = ihex_next_binrec(rec)) {
340 Bootaddr = be32_to_cpu(rec->addr);
341 response = rom_write(edge_serial->serial,
344 be16_to_cpu(rec->len),
347 dev_err(&edge_serial->serial->dev->dev,
348 "rom_write failed (%x, %x, %d)\n",
349 Bootaddr >> 16, Bootaddr & 0xFFFF,
350 be16_to_cpu(rec->len));
355 dev_dbg(dev, "Boot Image -- already up to date\n");
357 release_firmware(fw);
361 /************************************************************************
363 * Get string descriptor from device
365 ************************************************************************/
366 static int get_string_desc(struct usb_device *dev, int Id,
367 struct usb_string_descriptor **pRetDesc)
369 struct usb_string_descriptor StringDesc;
370 struct usb_string_descriptor *pStringDesc;
372 dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id);
374 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
378 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
382 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
383 StringDesc.bLength)) {
388 *pRetDesc = pStringDesc;
393 static void dump_product_info(struct edgeport_serial *edge_serial,
394 struct edgeport_product_info *product_info)
396 struct device *dev = &edge_serial->serial->dev->dev;
398 /* Dump Product Info structure */
399 dev_dbg(dev, "**Product Information:\n");
400 dev_dbg(dev, " ProductId %x\n", product_info->ProductId);
401 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts);
402 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer);
403 dev_dbg(dev, " IsServer %d\n", product_info->IsServer);
404 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232);
405 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422);
406 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485);
407 dev_dbg(dev, " RomSize %d\n", product_info->RomSize);
408 dev_dbg(dev, " RamSize %d\n", product_info->RamSize);
409 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev);
410 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev);
411 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n",
412 product_info->BootMajorVersion,
413 product_info->BootMinorVersion,
414 le16_to_cpu(product_info->BootBuildNumber));
415 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n",
416 product_info->FirmwareMajorVersion,
417 product_info->FirmwareMinorVersion,
418 le16_to_cpu(product_info->FirmwareBuildNumber));
419 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n",
420 product_info->ManufactureDescDate[0],
421 product_info->ManufactureDescDate[1],
422 product_info->ManufactureDescDate[2]+1900);
423 dev_dbg(dev, " iDownloadFile 0x%x\n",
424 product_info->iDownloadFile);
425 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer);
428 static void get_product_info(struct edgeport_serial *edge_serial)
430 struct edgeport_product_info *product_info = &edge_serial->product_info;
432 memset(product_info, 0, sizeof(struct edgeport_product_info));
434 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
435 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
436 product_info->ProdInfoVer = 0;
438 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
439 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
440 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
441 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
443 product_info->BootMajorVersion =
444 edge_serial->boot_descriptor.MajorVersion;
445 product_info->BootMinorVersion =
446 edge_serial->boot_descriptor.MinorVersion;
447 product_info->BootBuildNumber =
448 edge_serial->boot_descriptor.BuildNumber;
450 memcpy(product_info->ManufactureDescDate,
451 edge_serial->manuf_descriptor.DescDate,
452 sizeof(edge_serial->manuf_descriptor.DescDate));
454 /* check if this is 2nd generation hardware */
455 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
456 & ION_DEVICE_ID_80251_NETCHIP)
457 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
459 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
461 /* Determine Product type and set appropriate flags */
462 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
463 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
464 case ION_DEVICE_ID_EDGEPORT_4T:
465 case ION_DEVICE_ID_EDGEPORT_4:
466 case ION_DEVICE_ID_EDGEPORT_2:
467 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
468 case ION_DEVICE_ID_EDGEPORT_8:
469 case ION_DEVICE_ID_EDGEPORT_421:
470 case ION_DEVICE_ID_EDGEPORT_21:
471 case ION_DEVICE_ID_EDGEPORT_2_DIN:
472 case ION_DEVICE_ID_EDGEPORT_4_DIN:
473 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
474 product_info->IsRS232 = 1;
477 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
478 product_info->IsRS422 = 1;
479 product_info->IsRS485 = 1;
482 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
483 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
484 product_info->IsRS422 = 1;
488 dump_product_info(edge_serial, product_info);
491 static int get_epic_descriptor(struct edgeport_serial *ep)
494 struct usb_serial *serial = ep->serial;
495 struct edgeport_product_info *product_info = &ep->product_info;
496 struct edge_compatibility_descriptor *epic = &ep->epic_descriptor;
497 struct edge_compatibility_bits *bits;
498 struct device *dev = &serial->dev->dev;
501 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
502 USB_REQUEST_ION_GET_EPIC_DESC,
504 &ep->epic_descriptor,
505 sizeof(struct edge_compatibility_descriptor),
510 memset(product_info, 0, sizeof(struct edgeport_product_info));
512 product_info->NumPorts = epic->NumPorts;
513 product_info->ProdInfoVer = 0;
514 product_info->FirmwareMajorVersion = epic->MajorVersion;
515 product_info->FirmwareMinorVersion = epic->MinorVersion;
516 product_info->FirmwareBuildNumber = epic->BuildNumber;
517 product_info->iDownloadFile = epic->iDownloadFile;
518 product_info->EpicVer = epic->EpicVer;
519 product_info->Epic = epic->Supports;
520 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
521 dump_product_info(ep, product_info);
523 bits = &ep->epic_descriptor.Supports;
524 dev_dbg(dev, "**EPIC descriptor:\n");
525 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE");
526 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE");
527 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE");
528 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE");
529 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
530 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
531 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE");
532 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE");
533 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
534 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE");
535 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE");
536 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
537 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE");
544 /************************************************************************/
545 /************************************************************************/
546 /* U S B C A L L B A C K F U N C T I O N S */
547 /* U S B C A L L B A C K F U N C T I O N S */
548 /************************************************************************/
549 /************************************************************************/
551 /*****************************************************************************
552 * edge_interrupt_callback
553 * this is the callback function for when we have received data on the
554 * interrupt endpoint.
555 *****************************************************************************/
556 static void edge_interrupt_callback(struct urb *urb)
558 struct edgeport_serial *edge_serial = urb->context;
560 struct edgeport_port *edge_port;
561 struct usb_serial_port *port;
562 unsigned char *data = urb->transfer_buffer;
563 int length = urb->actual_length;
569 int status = urb->status;
578 /* this urb is terminated, clean up */
579 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
582 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
586 dev = &edge_serial->serial->dev->dev;
588 /* process this interrupt-read even if there are no ports open */
590 usb_serial_debug_data(dev, __func__, length, data);
593 bytes_avail = data[0] | (data[1] << 8);
595 spin_lock(&edge_serial->es_lock);
596 edge_serial->rxBytesAvail += bytes_avail;
598 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
599 __func__, bytes_avail,
600 edge_serial->rxBytesAvail,
601 edge_serial->read_in_progress);
603 if (edge_serial->rxBytesAvail > 0 &&
604 !edge_serial->read_in_progress) {
605 dev_dbg(dev, "%s - posting a read\n", __func__);
606 edge_serial->read_in_progress = true;
608 /* we have pending bytes on the
609 bulk in pipe, send a request */
610 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
613 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
615 edge_serial->read_in_progress = false;
618 spin_unlock(&edge_serial->es_lock);
621 /* grab the txcredits for the ports if available */
624 while ((position < length) &&
625 (portNumber < edge_serial->serial->num_ports)) {
626 txCredits = data[position] | (data[position+1] << 8);
628 port = edge_serial->serial->port[portNumber];
629 edge_port = usb_get_serial_port_data(port);
630 if (edge_port->open) {
631 spin_lock(&edge_port->ep_lock);
632 edge_port->txCredits += txCredits;
633 spin_unlock(&edge_port->ep_lock);
634 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
635 __func__, portNumber,
636 edge_port->txCredits);
638 /* tell the tty driver that something
640 tty_port_tty_wakeup(&edge_port->port->port);
641 /* Since we have more credit, check
642 if more data can be sent */
643 send_more_port_data(edge_serial,
653 result = usb_submit_urb(urb, GFP_ATOMIC);
655 dev_err(&urb->dev->dev,
656 "%s - Error %d submitting control urb\n",
661 /*****************************************************************************
662 * edge_bulk_in_callback
663 * this is the callback function for when we have received data on the
665 *****************************************************************************/
666 static void edge_bulk_in_callback(struct urb *urb)
668 struct edgeport_serial *edge_serial = urb->context;
670 unsigned char *data = urb->transfer_buffer;
672 __u16 raw_data_length;
673 int status = urb->status;
676 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
678 edge_serial->read_in_progress = false;
682 if (urb->actual_length == 0) {
683 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
684 edge_serial->read_in_progress = false;
688 dev = &edge_serial->serial->dev->dev;
689 raw_data_length = urb->actual_length;
691 usb_serial_debug_data(dev, __func__, raw_data_length, data);
693 spin_lock(&edge_serial->es_lock);
695 /* decrement our rxBytes available by the number that we just got */
696 edge_serial->rxBytesAvail -= raw_data_length;
698 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
699 raw_data_length, edge_serial->rxBytesAvail);
701 process_rcvd_data(edge_serial, data, urb->actual_length);
703 /* check to see if there's any more data for us to read */
704 if (edge_serial->rxBytesAvail > 0) {
705 dev_dbg(dev, "%s - posting a read\n", __func__);
706 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
709 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
711 edge_serial->read_in_progress = false;
714 edge_serial->read_in_progress = false;
717 spin_unlock(&edge_serial->es_lock);
721 /*****************************************************************************
722 * edge_bulk_out_data_callback
723 * this is the callback function for when we have finished sending
724 * serial data on the bulk out endpoint.
725 *****************************************************************************/
726 static void edge_bulk_out_data_callback(struct urb *urb)
728 struct edgeport_port *edge_port = urb->context;
729 int status = urb->status;
732 dev_dbg(&urb->dev->dev,
733 "%s - nonzero write bulk status received: %d\n",
738 tty_port_tty_wakeup(&edge_port->port->port);
740 /* Release the Write URB */
741 edge_port->write_in_progress = false;
743 /* Check if more data needs to be sent */
744 send_more_port_data((struct edgeport_serial *)
745 (usb_get_serial_data(edge_port->port->serial)), edge_port);
749 /*****************************************************************************
751 * this is the callback function for when we have finished sending a
752 * command on the bulk out endpoint.
753 *****************************************************************************/
754 static void edge_bulk_out_cmd_callback(struct urb *urb)
756 struct edgeport_port *edge_port = urb->context;
757 int status = urb->status;
759 atomic_dec(&CmdUrbs);
760 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n",
761 __func__, urb, atomic_read(&CmdUrbs));
764 /* clean up the transfer buffer */
765 kfree(urb->transfer_buffer);
767 /* Free the command urb */
771 dev_dbg(&urb->dev->dev,
772 "%s - nonzero write bulk status received: %d\n",
777 /* tell the tty driver that something has changed */
779 tty_port_tty_wakeup(&edge_port->port->port);
781 /* we have completed the command */
782 edge_port->commandPending = false;
783 wake_up(&edge_port->wait_command);
787 /*****************************************************************************
788 * Driver tty interface functions
789 *****************************************************************************/
791 /*****************************************************************************
793 * this function is called by the tty driver when a port is opened
794 * If successful, we return 0
795 * Otherwise we return a negative error number.
796 *****************************************************************************/
797 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
799 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
800 struct device *dev = &port->dev;
801 struct usb_serial *serial;
802 struct edgeport_serial *edge_serial;
805 if (edge_port == NULL)
808 /* see if we've set up our endpoint info yet (can't set it up
809 in edge_startup as the structures were not set up at that time.) */
810 serial = port->serial;
811 edge_serial = usb_get_serial_data(serial);
812 if (edge_serial == NULL)
814 if (edge_serial->interrupt_in_buffer == NULL) {
815 struct usb_serial_port *port0 = serial->port[0];
817 /* not set up yet, so do it now */
818 edge_serial->interrupt_in_buffer =
819 port0->interrupt_in_buffer;
820 edge_serial->interrupt_in_endpoint =
821 port0->interrupt_in_endpointAddress;
822 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
823 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
824 edge_serial->bulk_in_endpoint =
825 port0->bulk_in_endpointAddress;
826 edge_serial->read_urb = port0->read_urb;
827 edge_serial->bulk_out_endpoint =
828 port0->bulk_out_endpointAddress;
830 /* set up our interrupt urb */
831 usb_fill_int_urb(edge_serial->interrupt_read_urb,
833 usb_rcvintpipe(serial->dev,
834 port0->interrupt_in_endpointAddress),
835 port0->interrupt_in_buffer,
836 edge_serial->interrupt_read_urb->transfer_buffer_length,
837 edge_interrupt_callback, edge_serial,
838 edge_serial->interrupt_read_urb->interval);
840 /* set up our bulk in urb */
841 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
842 usb_rcvbulkpipe(serial->dev,
843 port0->bulk_in_endpointAddress),
844 port0->bulk_in_buffer,
845 edge_serial->read_urb->transfer_buffer_length,
846 edge_bulk_in_callback, edge_serial);
847 edge_serial->read_in_progress = false;
849 /* start interrupt read for this edgeport
850 * this interrupt will continue as long
851 * as the edgeport is connected */
852 response = usb_submit_urb(edge_serial->interrupt_read_urb,
855 dev_err(dev, "%s - Error %d submitting control urb\n",
860 /* initialize our wait queues */
861 init_waitqueue_head(&edge_port->wait_open);
862 init_waitqueue_head(&edge_port->wait_chase);
863 init_waitqueue_head(&edge_port->wait_command);
865 /* initialize our port settings */
866 edge_port->txCredits = 0; /* Can't send any data yet */
867 /* Must always set this bit to enable ints! */
868 edge_port->shadowMCR = MCR_MASTER_IE;
869 edge_port->chaseResponsePending = false;
871 /* send a open port command */
872 edge_port->openPending = true;
873 edge_port->open = false;
874 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
877 dev_err(dev, "%s - error sending open port command\n", __func__);
878 edge_port->openPending = false;
882 /* now wait for the port to be completely opened */
883 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
886 if (!edge_port->open) {
888 dev_dbg(dev, "%s - open timedout\n", __func__);
889 edge_port->openPending = false;
893 /* create the txfifo */
894 edge_port->txfifo.head = 0;
895 edge_port->txfifo.tail = 0;
896 edge_port->txfifo.count = 0;
897 edge_port->txfifo.size = edge_port->maxTxCredits;
898 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
900 if (!edge_port->txfifo.fifo) {
905 /* Allocate a URB for the write */
906 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
907 edge_port->write_in_progress = false;
909 if (!edge_port->write_urb) {
914 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
915 __func__, edge_port->maxTxCredits);
921 /************************************************************************
923 * block_until_chase_response
925 * This function will block the close until one of the following:
926 * 1. Response to our Chase comes from Edgeport
927 * 2. A timeout of 10 seconds without activity has expired
928 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
930 ************************************************************************/
931 static void block_until_chase_response(struct edgeport_port *edge_port)
933 struct device *dev = &edge_port->port->dev;
940 /* Save Last credits */
941 lastCredits = edge_port->txCredits;
943 /* Did we get our Chase response */
944 if (!edge_port->chaseResponsePending) {
945 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
947 /* did we get all of our credit back? */
948 if (edge_port->txCredits == edge_port->maxTxCredits) {
949 dev_dbg(dev, "%s - Got all credits\n", __func__);
954 /* Block the thread for a while */
955 prepare_to_wait(&edge_port->wait_chase, &wait,
956 TASK_UNINTERRUPTIBLE);
957 schedule_timeout(timeout);
958 finish_wait(&edge_port->wait_chase, &wait);
960 if (lastCredits == edge_port->txCredits) {
961 /* No activity.. count down. */
964 edge_port->chaseResponsePending = false;
965 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
969 /* Reset timeout value back to 10 seconds */
970 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
971 lastCredits, edge_port->txCredits);
978 /************************************************************************
980 * block_until_tx_empty
982 * This function will block the close until one of the following:
984 * 2. The edgeport has stopped
985 * 3. A timeout of 3 seconds without activity has expired
987 ************************************************************************/
988 static void block_until_tx_empty(struct edgeport_port *edge_port)
990 struct device *dev = &edge_port->port->dev;
992 struct TxFifo *fifo = &edge_port->txfifo;
998 /* Save Last count */
999 lastCount = fifo->count;
1001 /* Is the Edgeport Buffer empty? */
1002 if (lastCount == 0) {
1003 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1007 /* Block the thread for a while */
1008 prepare_to_wait(&edge_port->wait_chase, &wait,
1009 TASK_UNINTERRUPTIBLE);
1010 schedule_timeout(timeout);
1011 finish_wait(&edge_port->wait_chase, &wait);
1013 dev_dbg(dev, "%s wait\n", __func__);
1015 if (lastCount == fifo->count) {
1016 /* No activity.. count down. */
1019 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1023 /* Reset timeout value back to seconds */
1030 /*****************************************************************************
1032 * this function is called by the tty driver when a port is closed
1033 *****************************************************************************/
1034 static void edge_close(struct usb_serial_port *port)
1036 struct edgeport_serial *edge_serial;
1037 struct edgeport_port *edge_port;
1040 edge_serial = usb_get_serial_data(port->serial);
1041 edge_port = usb_get_serial_port_data(port);
1042 if (edge_serial == NULL || edge_port == NULL)
1045 /* block until tx is empty */
1046 block_until_tx_empty(edge_port);
1048 edge_port->closePending = true;
1050 if ((!edge_serial->is_epic) ||
1051 ((edge_serial->is_epic) &&
1052 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1053 /* flush and chase */
1054 edge_port->chaseResponsePending = true;
1056 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1057 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1059 /* block until chase finished */
1060 block_until_chase_response(edge_port);
1062 edge_port->chaseResponsePending = false;
1065 if ((!edge_serial->is_epic) ||
1066 ((edge_serial->is_epic) &&
1067 (edge_serial->epic_descriptor.Supports.IOSPClose))) {
1068 /* close the port */
1069 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
1070 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1073 /* port->close = true; */
1074 edge_port->closePending = false;
1075 edge_port->open = false;
1076 edge_port->openPending = false;
1078 usb_kill_urb(edge_port->write_urb);
1080 if (edge_port->write_urb) {
1081 /* if this urb had a transfer buffer already
1082 (old transfer) free it */
1083 kfree(edge_port->write_urb->transfer_buffer);
1084 usb_free_urb(edge_port->write_urb);
1085 edge_port->write_urb = NULL;
1087 kfree(edge_port->txfifo.fifo);
1088 edge_port->txfifo.fifo = NULL;
1091 /*****************************************************************************
1093 * this function is called by the tty driver when data should be written
1095 * If successful, we return the number of bytes written, otherwise we
1096 * return a negative error number.
1097 *****************************************************************************/
1098 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1099 const unsigned char *data, int count)
1101 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1102 struct TxFifo *fifo;
1107 unsigned long flags;
1109 if (edge_port == NULL)
1112 /* get a pointer to the Tx fifo */
1113 fifo = &edge_port->txfifo;
1115 spin_lock_irqsave(&edge_port->ep_lock, flags);
1117 /* calculate number of bytes to put in fifo */
1118 copySize = min((unsigned int)count,
1119 (edge_port->txCredits - fifo->count));
1121 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1122 __func__, count, edge_port->txCredits - fifo->count, copySize);
1124 /* catch writes of 0 bytes which the tty driver likes to give us,
1125 and when txCredits is empty */
1126 if (copySize == 0) {
1127 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1132 * since we can never overflow the buffer we do not have to check for a
1135 * the copy is done is two parts -- first fill to the end of the buffer
1136 * then copy the reset from the start of the buffer
1138 bytesleft = fifo->size - fifo->head;
1139 firsthalf = min(bytesleft, copySize);
1140 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1141 firsthalf, bytesleft);
1143 /* now copy our data */
1144 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1145 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1147 /* update the index and size */
1148 fifo->head += firsthalf;
1149 fifo->count += firsthalf;
1151 /* wrap the index */
1152 if (fifo->head == fifo->size)
1155 secondhalf = copySize-firsthalf;
1158 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1159 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1160 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
1161 /* update the index and size */
1162 fifo->count += secondhalf;
1163 fifo->head += secondhalf;
1164 /* No need to check for wrap since we can not get to end of
1165 * the fifo in this part
1170 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1172 send_more_port_data((struct edgeport_serial *)
1173 usb_get_serial_data(port->serial), edge_port);
1175 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1176 __func__, copySize, edge_port->txCredits, fifo->count);
1182 /************************************************************************
1184 * send_more_port_data()
1186 * This routine attempts to write additional UART transmit data
1187 * to a port over the USB bulk pipe. It is called (1) when new
1188 * data has been written to a port's TxBuffer from higher layers
1189 * (2) when the peripheral sends us additional TxCredits indicating
1190 * that it can accept more Tx data for a given port; and (3) when
1191 * a bulk write completes successfully and we want to see if we
1192 * can transmit more.
1194 ************************************************************************/
1195 static void send_more_port_data(struct edgeport_serial *edge_serial,
1196 struct edgeport_port *edge_port)
1198 struct TxFifo *fifo = &edge_port->txfifo;
1199 struct device *dev = &edge_port->port->dev;
1201 unsigned char *buffer;
1207 unsigned long flags;
1209 spin_lock_irqsave(&edge_port->ep_lock, flags);
1211 if (edge_port->write_in_progress ||
1213 (fifo->count == 0)) {
1214 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1215 __func__, fifo->count, edge_port->write_in_progress);
1219 /* since the amount of data in the fifo will always fit into the
1220 * edgeport buffer we do not need to check the write length
1222 * Do we have enough credits for this port to make it worthwhile
1223 * to bother queueing a write. If it's too small, say a few bytes,
1224 * it's better to wait for more credits so we can do a larger write.
1226 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1227 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1228 __func__, fifo->count, edge_port->txCredits);
1232 /* lock this write */
1233 edge_port->write_in_progress = true;
1235 /* get a pointer to the write_urb */
1236 urb = edge_port->write_urb;
1238 /* make sure transfer buffer is freed */
1239 kfree(urb->transfer_buffer);
1240 urb->transfer_buffer = NULL;
1242 /* build the data header for the buffer and port that we are about
1244 count = fifo->count;
1245 buffer = kmalloc(count+2, GFP_ATOMIC);
1247 edge_port->write_in_progress = false;
1250 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1251 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1253 /* now copy our data */
1254 bytesleft = fifo->size - fifo->tail;
1255 firsthalf = min(bytesleft, count);
1256 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1257 fifo->tail += firsthalf;
1258 fifo->count -= firsthalf;
1259 if (fifo->tail == fifo->size)
1262 secondhalf = count-firsthalf;
1264 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1266 fifo->tail += secondhalf;
1267 fifo->count -= secondhalf;
1271 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1273 /* fill up the urb with all of our data and submit it */
1274 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1275 usb_sndbulkpipe(edge_serial->serial->dev,
1276 edge_serial->bulk_out_endpoint),
1278 edge_bulk_out_data_callback, edge_port);
1280 /* decrement the number of credits we have by the number we just sent */
1281 edge_port->txCredits -= count;
1282 edge_port->port->icount.tx += count;
1284 status = usb_submit_urb(urb, GFP_ATOMIC);
1286 /* something went wrong */
1287 dev_err_console(edge_port->port,
1288 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1290 edge_port->write_in_progress = false;
1292 /* revert the credits as something bad happened. */
1293 edge_port->txCredits += count;
1294 edge_port->port->icount.tx -= count;
1296 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1297 __func__, count, edge_port->txCredits, fifo->count);
1300 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1304 /*****************************************************************************
1306 * this function is called by the tty driver when it wants to know how
1307 * many bytes of data we can accept for a specific port. If successful,
1308 * we return the amount of room that we have for this port (the txCredits)
1309 * otherwise we return a negative error number.
1310 *****************************************************************************/
1311 static int edge_write_room(struct tty_struct *tty)
1313 struct usb_serial_port *port = tty->driver_data;
1314 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1316 unsigned long flags;
1318 if (edge_port == NULL)
1320 if (edge_port->closePending)
1323 if (!edge_port->open) {
1324 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1328 /* total of both buffers is still txCredit */
1329 spin_lock_irqsave(&edge_port->ep_lock, flags);
1330 room = edge_port->txCredits - edge_port->txfifo.count;
1331 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1333 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1338 /*****************************************************************************
1339 * edge_chars_in_buffer
1340 * this function is called by the tty driver when it wants to know how
1341 * many bytes of data we currently have outstanding in the port (data that
1342 * has been written, but hasn't made it out the port yet)
1343 * If successful, we return the number of bytes left to be written in the
1345 * Otherwise we return a negative error number.
1346 *****************************************************************************/
1347 static int edge_chars_in_buffer(struct tty_struct *tty)
1349 struct usb_serial_port *port = tty->driver_data;
1350 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1352 unsigned long flags;
1354 if (edge_port == NULL)
1356 if (edge_port->closePending)
1359 if (!edge_port->open) {
1360 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1364 spin_lock_irqsave(&edge_port->ep_lock, flags);
1365 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1366 edge_port->txfifo.count;
1367 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1369 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars);
1376 /*****************************************************************************
1378 * this function is called by the tty driver when it wants to stop the data
1379 * being read from the port.
1380 *****************************************************************************/
1381 static void edge_throttle(struct tty_struct *tty)
1383 struct usb_serial_port *port = tty->driver_data;
1384 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1387 if (edge_port == NULL)
1390 if (!edge_port->open) {
1391 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1395 /* if we are implementing XON/XOFF, send the stop character */
1397 unsigned char stop_char = STOP_CHAR(tty);
1398 status = edge_write(tty, port, &stop_char, 1);
1403 /* if we are implementing RTS/CTS, toggle that line */
1404 if (tty->termios.c_cflag & CRTSCTS) {
1405 edge_port->shadowMCR &= ~MCR_RTS;
1406 status = send_cmd_write_uart_register(edge_port, MCR,
1407 edge_port->shadowMCR);
1414 /*****************************************************************************
1416 * this function is called by the tty driver when it wants to resume the
1417 * data being read from the port (called after SerialThrottle is called)
1418 *****************************************************************************/
1419 static void edge_unthrottle(struct tty_struct *tty)
1421 struct usb_serial_port *port = tty->driver_data;
1422 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1425 if (edge_port == NULL)
1428 if (!edge_port->open) {
1429 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1433 /* if we are implementing XON/XOFF, send the start character */
1435 unsigned char start_char = START_CHAR(tty);
1436 status = edge_write(tty, port, &start_char, 1);
1440 /* if we are implementing RTS/CTS, toggle that line */
1441 if (tty->termios.c_cflag & CRTSCTS) {
1442 edge_port->shadowMCR |= MCR_RTS;
1443 send_cmd_write_uart_register(edge_port, MCR,
1444 edge_port->shadowMCR);
1449 /*****************************************************************************
1451 * this function is called by the tty driver when it wants to change
1452 * the termios structure
1453 *****************************************************************************/
1454 static void edge_set_termios(struct tty_struct *tty,
1455 struct usb_serial_port *port, struct ktermios *old_termios)
1457 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1460 cflag = tty->termios.c_cflag;
1461 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag);
1462 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag);
1464 if (edge_port == NULL)
1467 if (!edge_port->open) {
1468 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1472 /* change the port settings to the new ones specified */
1473 change_port_settings(tty, edge_port, old_termios);
1477 /*****************************************************************************
1478 * get_lsr_info - get line status register info
1480 * Purpose: Let user call ioctl() to get info when the UART physically
1481 * is emptied. On bus types like RS485, the transmitter must
1482 * release the bus after transmitting. This must be done when
1483 * the transmit shift register is empty, not be done when the
1484 * transmit holding register is empty. This functionality
1485 * allows an RS485 driver to be written in user space.
1486 *****************************************************************************/
1487 static int get_lsr_info(struct edgeport_port *edge_port,
1488 unsigned int __user *value)
1490 unsigned int result = 0;
1491 unsigned long flags;
1493 spin_lock_irqsave(&edge_port->ep_lock, flags);
1494 if (edge_port->maxTxCredits == edge_port->txCredits &&
1495 edge_port->txfifo.count == 0) {
1496 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1497 result = TIOCSER_TEMT;
1499 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1501 if (copy_to_user(value, &result, sizeof(int)))
1506 static int edge_tiocmset(struct tty_struct *tty,
1507 unsigned int set, unsigned int clear)
1509 struct usb_serial_port *port = tty->driver_data;
1510 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1513 mcr = edge_port->shadowMCR;
1514 if (set & TIOCM_RTS)
1516 if (set & TIOCM_DTR)
1518 if (set & TIOCM_LOOP)
1519 mcr |= MCR_LOOPBACK;
1521 if (clear & TIOCM_RTS)
1523 if (clear & TIOCM_DTR)
1525 if (clear & TIOCM_LOOP)
1526 mcr &= ~MCR_LOOPBACK;
1528 edge_port->shadowMCR = mcr;
1530 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1535 static int edge_tiocmget(struct tty_struct *tty)
1537 struct usb_serial_port *port = tty->driver_data;
1538 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1539 unsigned int result = 0;
1543 msr = edge_port->shadowMSR;
1544 mcr = edge_port->shadowMCR;
1545 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1546 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1547 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1548 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1549 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1550 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1555 static int get_serial_info(struct edgeport_port *edge_port,
1556 struct serial_struct __user *retinfo)
1558 struct serial_struct tmp;
1563 memset(&tmp, 0, sizeof(tmp));
1565 tmp.type = PORT_16550A;
1566 tmp.line = edge_port->port->minor;
1567 tmp.port = edge_port->port->port_number;
1569 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1570 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1571 tmp.baud_base = 9600;
1572 tmp.close_delay = 5*HZ;
1573 tmp.closing_wait = 30*HZ;
1575 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1581 /*****************************************************************************
1583 * this function handles any ioctl calls to the driver
1584 *****************************************************************************/
1585 static int edge_ioctl(struct tty_struct *tty,
1586 unsigned int cmd, unsigned long arg)
1588 struct usb_serial_port *port = tty->driver_data;
1590 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1594 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
1595 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1598 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
1599 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1601 return -ENOIOCTLCMD;
1605 /*****************************************************************************
1607 * this function sends a break to the port
1608 *****************************************************************************/
1609 static void edge_break(struct tty_struct *tty, int break_state)
1611 struct usb_serial_port *port = tty->driver_data;
1612 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1613 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1616 if ((!edge_serial->is_epic) ||
1617 ((edge_serial->is_epic) &&
1618 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1619 /* flush and chase */
1620 edge_port->chaseResponsePending = true;
1622 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1623 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1625 /* block until chase finished */
1626 block_until_chase_response(edge_port);
1628 edge_port->chaseResponsePending = false;
1632 if ((!edge_serial->is_epic) ||
1633 ((edge_serial->is_epic) &&
1634 (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) {
1635 if (break_state == -1) {
1636 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
1637 status = send_iosp_ext_cmd(edge_port,
1638 IOSP_CMD_SET_BREAK, 0);
1640 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
1641 status = send_iosp_ext_cmd(edge_port,
1642 IOSP_CMD_CLEAR_BREAK, 0);
1645 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
1651 /*****************************************************************************
1653 * this function handles the data received on the bulk in pipe.
1654 *****************************************************************************/
1655 static void process_rcvd_data(struct edgeport_serial *edge_serial,
1656 unsigned char *buffer, __u16 bufferLength)
1658 struct device *dev = &edge_serial->serial->dev->dev;
1659 struct usb_serial_port *port;
1660 struct edgeport_port *edge_port;
1661 __u16 lastBufferLength;
1664 lastBufferLength = bufferLength + 1;
1666 while (bufferLength > 0) {
1667 /* failsafe incase we get a message that we don't understand */
1668 if (lastBufferLength == bufferLength) {
1669 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1672 lastBufferLength = bufferLength;
1674 switch (edge_serial->rxState) {
1676 edge_serial->rxHeader1 = *buffer;
1680 if (bufferLength == 0) {
1681 edge_serial->rxState = EXPECT_HDR2;
1684 /* otherwise, drop on through */
1686 edge_serial->rxHeader2 = *buffer;
1690 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1691 edge_serial->rxHeader1, edge_serial->rxHeader2);
1692 /* Process depending on whether this header is
1695 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1696 /* Decode this status header and go to
1697 * EXPECT_HDR1 (if we can process the status
1698 * with only 2 bytes), or go to EXPECT_HDR3 to
1699 * get the third byte. */
1700 edge_serial->rxPort =
1701 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1702 edge_serial->rxStatusCode =
1703 IOSP_GET_STATUS_CODE(
1704 edge_serial->rxHeader1);
1706 if (!IOSP_STATUS_IS_2BYTE(
1707 edge_serial->rxStatusCode)) {
1708 /* This status needs additional bytes.
1709 * Save what we have and then wait for
1712 edge_serial->rxStatusParam
1713 = edge_serial->rxHeader2;
1714 edge_serial->rxState = EXPECT_HDR3;
1717 /* We have all the header bytes, process the
1719 process_rcvd_status(edge_serial,
1720 edge_serial->rxHeader2, 0);
1721 edge_serial->rxState = EXPECT_HDR1;
1724 edge_serial->rxPort =
1725 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1726 edge_serial->rxBytesRemaining =
1727 IOSP_GET_HDR_DATA_LEN(
1728 edge_serial->rxHeader1,
1729 edge_serial->rxHeader2);
1730 dev_dbg(dev, "%s - Data for Port %u Len %u\n",
1732 edge_serial->rxPort,
1733 edge_serial->rxBytesRemaining);
1735 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1736 * ASSERT(DevExt->RxBytesRemaining <
1737 * IOSP_MAX_DATA_LENGTH);
1740 if (bufferLength == 0) {
1741 edge_serial->rxState = EXPECT_DATA;
1744 /* Else, drop through */
1746 case EXPECT_DATA: /* Expect data */
1747 if (bufferLength < edge_serial->rxBytesRemaining) {
1748 rxLen = bufferLength;
1749 /* Expect data to start next buffer */
1750 edge_serial->rxState = EXPECT_DATA;
1752 /* BufLen >= RxBytesRemaining */
1753 rxLen = edge_serial->rxBytesRemaining;
1754 /* Start another header next time */
1755 edge_serial->rxState = EXPECT_HDR1;
1758 bufferLength -= rxLen;
1759 edge_serial->rxBytesRemaining -= rxLen;
1761 /* spit this data back into the tty driver if this
1764 port = edge_serial->serial->port[
1765 edge_serial->rxPort];
1766 edge_port = usb_get_serial_port_data(port);
1767 if (edge_port->open) {
1768 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1770 edge_serial->rxPort);
1771 edge_tty_recv(edge_port->port, buffer,
1773 edge_port->port->icount.rx += rxLen;
1779 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1780 edge_serial->rxHeader3 = *buffer;
1784 /* We have all the header bytes, process the
1786 process_rcvd_status(edge_serial,
1787 edge_serial->rxStatusParam,
1788 edge_serial->rxHeader3);
1789 edge_serial->rxState = EXPECT_HDR1;
1796 /*****************************************************************************
1797 * process_rcvd_status
1798 * this function handles the any status messages received on the
1800 *****************************************************************************/
1801 static void process_rcvd_status(struct edgeport_serial *edge_serial,
1802 __u8 byte2, __u8 byte3)
1804 struct usb_serial_port *port;
1805 struct edgeport_port *edge_port;
1806 struct tty_struct *tty;
1808 __u8 code = edge_serial->rxStatusCode;
1810 /* switch the port pointer to the one being currently talked about */
1811 port = edge_serial->serial->port[edge_serial->rxPort];
1812 edge_port = usb_get_serial_port_data(port);
1813 if (edge_port == NULL) {
1814 dev_err(&edge_serial->serial->dev->dev,
1815 "%s - edge_port == NULL for port %d\n",
1816 __func__, edge_serial->rxPort);
1821 if (code == IOSP_EXT_STATUS) {
1823 case IOSP_EXT_STATUS_CHASE_RSP:
1824 /* we want to do EXT status regardless of port
1826 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1827 __func__, edge_serial->rxPort, byte3);
1828 /* Currently, the only EXT_STATUS is Chase, so process
1829 * here instead of one more call to one more subroutine
1830 * If/when more EXT_STATUS, there'll be more work to do
1831 * Also, we currently clear flag and close the port
1832 * regardless of content of above's Byte3.
1833 * We could choose to do something else when Byte3 says
1834 * Timeout on Chase from Edgeport, like wait longer in
1835 * block_until_chase_response, but for now we don't.
1837 edge_port->chaseResponsePending = false;
1838 wake_up(&edge_port->wait_chase);
1841 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1842 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1843 __func__, edge_serial->rxPort, byte3);
1844 /* Port->RxCheckRsp = true; */
1849 if (code == IOSP_STATUS_OPEN_RSP) {
1850 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1851 edge_port->maxTxCredits = edge_port->txCredits;
1852 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1853 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1854 handle_new_msr(edge_port, byte2);
1856 /* send the current line settings to the port so we are
1857 in sync with any further termios calls */
1858 tty = tty_port_tty_get(&edge_port->port->port);
1860 change_port_settings(tty,
1861 edge_port, &tty->termios);
1865 /* we have completed the open */
1866 edge_port->openPending = false;
1867 edge_port->open = true;
1868 wake_up(&edge_port->wait_open);
1872 /* If port is closed, silently discard all rcvd status. We can
1873 * have cases where buffered status is received AFTER the close
1874 * port command is sent to the Edgeport.
1876 if (!edge_port->open || edge_port->closePending)
1880 /* Not currently sent by Edgeport */
1881 case IOSP_STATUS_LSR:
1882 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1883 __func__, edge_serial->rxPort, byte2);
1884 handle_new_lsr(edge_port, false, byte2, 0);
1887 case IOSP_STATUS_LSR_DATA:
1888 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1889 __func__, edge_serial->rxPort, byte2, byte3);
1890 /* byte2 is LSR Register */
1891 /* byte3 is broken data byte */
1892 handle_new_lsr(edge_port, true, byte2, byte3);
1895 * case IOSP_EXT_4_STATUS:
1896 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1897 * __func__, edge_serial->rxPort, byte2, byte3);
1900 case IOSP_STATUS_MSR:
1901 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1902 __func__, edge_serial->rxPort, byte2);
1904 * Process this new modem status and generate appropriate
1905 * events, etc, based on the new status. This routine
1906 * also saves the MSR in Port->ShadowMsr.
1908 handle_new_msr(edge_port, byte2);
1912 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
1918 /*****************************************************************************
1920 * this function passes data on to the tty flip buffer
1921 *****************************************************************************/
1922 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1927 cnt = tty_insert_flip_string(&port->port, data, length);
1929 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1930 __func__, length - cnt);
1935 tty_flip_buffer_push(&port->port);
1939 /*****************************************************************************
1941 * this function handles any change to the msr register for a port.
1942 *****************************************************************************/
1943 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
1945 struct async_icount *icount;
1947 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1948 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1949 icount = &edge_port->port->icount;
1951 /* update input line counters */
1952 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1954 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1956 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1958 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1960 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1963 /* Save the new modem status */
1964 edge_port->shadowMSR = newMsr & 0xf0;
1968 /*****************************************************************************
1970 * this function handles any change to the lsr register for a port.
1971 *****************************************************************************/
1972 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
1973 __u8 lsr, __u8 data)
1975 __u8 newLsr = (__u8) (lsr & (__u8)
1976 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1977 struct async_icount *icount;
1979 edge_port->shadowLSR = lsr;
1981 if (newLsr & LSR_BREAK) {
1983 * Parity and Framing errors only count if they
1984 * occur exclusive of a break being
1987 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1990 /* Place LSR data byte into Rx buffer */
1992 edge_tty_recv(edge_port->port, &data, 1);
1994 /* update input line counters */
1995 icount = &edge_port->port->icount;
1996 if (newLsr & LSR_BREAK)
1998 if (newLsr & LSR_OVER_ERR)
2000 if (newLsr & LSR_PAR_ERR)
2002 if (newLsr & LSR_FRM_ERR)
2007 /****************************************************************************
2009 * writes a number of bytes to the Edgeport device's sram starting at the
2011 * If successful returns the number of bytes written, otherwise it returns
2012 * a negative error number of the problem.
2013 ****************************************************************************/
2014 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2015 __u16 length, const __u8 *data)
2018 __u16 current_length;
2019 unsigned char *transfer_buffer;
2021 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
2023 transfer_buffer = kmalloc(64, GFP_KERNEL);
2024 if (!transfer_buffer)
2027 /* need to split these writes up into 64 byte chunks */
2029 while (length > 0) {
2031 current_length = 64;
2033 current_length = length;
2035 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
2036 memcpy(transfer_buffer, data, current_length);
2037 result = usb_control_msg(serial->dev,
2038 usb_sndctrlpipe(serial->dev, 0),
2039 USB_REQUEST_ION_WRITE_RAM,
2040 0x40, addr, extAddr, transfer_buffer,
2041 current_length, 300);
2044 length -= current_length;
2045 addr += current_length;
2046 data += current_length;
2049 kfree(transfer_buffer);
2054 /****************************************************************************
2056 * writes a number of bytes to the Edgeport device's ROM starting at the
2058 * If successful returns the number of bytes written, otherwise it returns
2059 * a negative error number of the problem.
2060 ****************************************************************************/
2061 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2062 __u16 length, const __u8 *data)
2065 __u16 current_length;
2066 unsigned char *transfer_buffer;
2068 transfer_buffer = kmalloc(64, GFP_KERNEL);
2069 if (!transfer_buffer)
2072 /* need to split these writes up into 64 byte chunks */
2074 while (length > 0) {
2076 current_length = 64;
2078 current_length = length;
2079 memcpy(transfer_buffer, data, current_length);
2080 result = usb_control_msg(serial->dev,
2081 usb_sndctrlpipe(serial->dev, 0),
2082 USB_REQUEST_ION_WRITE_ROM, 0x40,
2084 transfer_buffer, current_length, 300);
2087 length -= current_length;
2088 addr += current_length;
2089 data += current_length;
2092 kfree(transfer_buffer);
2097 /****************************************************************************
2099 * reads a number of bytes from the Edgeport device starting at the given
2101 * If successful returns the number of bytes read, otherwise it returns
2102 * a negative error number of the problem.
2103 ****************************************************************************/
2104 static int rom_read(struct usb_serial *serial, __u16 extAddr,
2105 __u16 addr, __u16 length, __u8 *data)
2108 __u16 current_length;
2109 unsigned char *transfer_buffer;
2111 transfer_buffer = kmalloc(64, GFP_KERNEL);
2112 if (!transfer_buffer)
2115 /* need to split these reads up into 64 byte chunks */
2117 while (length > 0) {
2119 current_length = 64;
2121 current_length = length;
2122 result = usb_control_msg(serial->dev,
2123 usb_rcvctrlpipe(serial->dev, 0),
2124 USB_REQUEST_ION_READ_ROM,
2125 0xC0, addr, extAddr, transfer_buffer,
2126 current_length, 300);
2129 memcpy(data, transfer_buffer, current_length);
2130 length -= current_length;
2131 addr += current_length;
2132 data += current_length;
2135 kfree(transfer_buffer);
2140 /****************************************************************************
2142 * Is used to send a IOSP message to the Edgeport device
2143 ****************************************************************************/
2144 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2145 __u8 command, __u8 param)
2147 unsigned char *buffer;
2148 unsigned char *currentCommand;
2152 buffer = kmalloc(10, GFP_ATOMIC);
2156 currentCommand = buffer;
2158 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number,
2161 status = write_cmd_usb(edge_port, buffer, length);
2163 /* something bad happened, let's free up the memory */
2171 /*****************************************************************************
2173 * this function writes the given buffer out to the bulk write endpoint.
2174 *****************************************************************************/
2175 static int write_cmd_usb(struct edgeport_port *edge_port,
2176 unsigned char *buffer, int length)
2178 struct edgeport_serial *edge_serial =
2179 usb_get_serial_data(edge_port->port->serial);
2180 struct device *dev = &edge_port->port->dev;
2184 usb_serial_debug_data(dev, __func__, length, buffer);
2186 /* Allocate our next urb */
2187 urb = usb_alloc_urb(0, GFP_ATOMIC);
2191 atomic_inc(&CmdUrbs);
2192 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2193 __func__, urb, atomic_read(&CmdUrbs));
2195 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2196 usb_sndbulkpipe(edge_serial->serial->dev,
2197 edge_serial->bulk_out_endpoint),
2198 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2200 edge_port->commandPending = true;
2201 status = usb_submit_urb(urb, GFP_ATOMIC);
2204 /* something went wrong */
2205 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2209 atomic_dec(&CmdUrbs);
2214 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2216 if (edge_port->commandPending) {
2217 /* command timed out */
2218 dev_dbg(dev, "%s - command timed out\n", __func__);
2226 /*****************************************************************************
2227 * send_cmd_write_baud_rate
2228 * this function sends the proper command to change the baud rate of the
2230 *****************************************************************************/
2231 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2234 struct edgeport_serial *edge_serial =
2235 usb_get_serial_data(edge_port->port->serial);
2236 struct device *dev = &edge_port->port->dev;
2237 unsigned char *cmdBuffer;
2238 unsigned char *currCmd;
2242 u32 number = edge_port->port->port_number;
2244 if (edge_serial->is_epic &&
2245 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2246 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2251 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
2253 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
2255 dev_err(dev, "%s - bad baud rate\n", __func__);
2259 /* Alloc memory for the string of commands. */
2260 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2264 currCmd = cmdBuffer;
2266 /* Enable access to divisor latch */
2267 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2269 /* Write the divisor itself */
2270 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2271 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2273 /* Restore original value to disable access to divisor latch */
2274 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2275 edge_port->shadowLCR);
2277 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2279 /* something bad happened, let's free up the memory */
2287 /*****************************************************************************
2288 * calc_baud_rate_divisor
2289 * this function calculates the proper baud rate divisor for the specified
2291 *****************************************************************************/
2292 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
2297 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2298 if (divisor_table[i].BaudRate == baudrate) {
2299 *divisor = divisor_table[i].Divisor;
2304 /* We have tried all of the standard baud rates
2305 * lets try to calculate the divisor for this baud rate
2306 * Make sure the baud rate is reasonable */
2307 if (baudrate > 50 && baudrate < 230400) {
2309 custom = (__u16)((230400L + baudrate/2) / baudrate);
2313 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
2321 /*****************************************************************************
2322 * send_cmd_write_uart_register
2323 * this function builds up a uart register message and sends to the device.
2324 *****************************************************************************/
2325 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2326 __u8 regNum, __u8 regValue)
2328 struct edgeport_serial *edge_serial =
2329 usb_get_serial_data(edge_port->port->serial);
2330 struct device *dev = &edge_port->port->dev;
2331 unsigned char *cmdBuffer;
2332 unsigned char *currCmd;
2333 unsigned long cmdLen = 0;
2336 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2337 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2339 if (edge_serial->is_epic &&
2340 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2342 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2346 if (edge_serial->is_epic &&
2347 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2349 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2353 /* Alloc memory for the string of commands. */
2354 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2355 if (cmdBuffer == NULL)
2358 currCmd = cmdBuffer;
2360 /* Build a cmd in the buffer to write the given register */
2361 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2364 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2366 /* something bad happened, let's free up the memory */
2374 /*****************************************************************************
2375 * change_port_settings
2376 * This routine is called to set the UART on the device to match the
2377 * specified new settings.
2378 *****************************************************************************/
2380 static void change_port_settings(struct tty_struct *tty,
2381 struct edgeport_port *edge_port, struct ktermios *old_termios)
2383 struct device *dev = &edge_port->port->dev;
2384 struct edgeport_serial *edge_serial =
2385 usb_get_serial_data(edge_port->port->serial);
2396 if (!edge_port->open &&
2397 !edge_port->openPending) {
2398 dev_dbg(dev, "%s - port not opened\n", __func__);
2402 cflag = tty->termios.c_cflag;
2404 switch (cflag & CSIZE) {
2406 lData = LCR_BITS_5; mask = 0x1f;
2407 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2410 lData = LCR_BITS_6; mask = 0x3f;
2411 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2414 lData = LCR_BITS_7; mask = 0x7f;
2415 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2420 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2424 lParity = LCR_PAR_NONE;
2425 if (cflag & PARENB) {
2426 if (cflag & CMSPAR) {
2427 if (cflag & PARODD) {
2428 lParity = LCR_PAR_MARK;
2429 dev_dbg(dev, "%s - parity = mark\n", __func__);
2431 lParity = LCR_PAR_SPACE;
2432 dev_dbg(dev, "%s - parity = space\n", __func__);
2434 } else if (cflag & PARODD) {
2435 lParity = LCR_PAR_ODD;
2436 dev_dbg(dev, "%s - parity = odd\n", __func__);
2438 lParity = LCR_PAR_EVEN;
2439 dev_dbg(dev, "%s - parity = even\n", __func__);
2442 dev_dbg(dev, "%s - parity = none\n", __func__);
2445 if (cflag & CSTOPB) {
2447 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2450 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2453 /* figure out the flow control settings */
2454 rxFlow = txFlow = 0x00;
2455 if (cflag & CRTSCTS) {
2456 rxFlow |= IOSP_RX_FLOW_RTS;
2457 txFlow |= IOSP_TX_FLOW_CTS;
2458 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2460 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2463 /* if we are implementing XON/XOFF, set the start and stop character
2465 if (I_IXOFF(tty) || I_IXON(tty)) {
2466 unsigned char stop_char = STOP_CHAR(tty);
2467 unsigned char start_char = START_CHAR(tty);
2469 if ((!edge_serial->is_epic) ||
2470 ((edge_serial->is_epic) &&
2471 (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) {
2472 send_iosp_ext_cmd(edge_port,
2473 IOSP_CMD_SET_XON_CHAR, start_char);
2474 send_iosp_ext_cmd(edge_port,
2475 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2478 /* if we are implementing INBOUND XON/XOFF */
2480 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2481 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2482 __func__, start_char, stop_char);
2484 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2487 /* if we are implementing OUTBOUND XON/XOFF */
2489 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2490 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2491 __func__, start_char, stop_char);
2493 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2497 /* Set flow control to the configured value */
2498 if ((!edge_serial->is_epic) ||
2499 ((edge_serial->is_epic) &&
2500 (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)))
2501 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2502 if ((!edge_serial->is_epic) ||
2503 ((edge_serial->is_epic) &&
2504 (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)))
2505 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2508 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2509 edge_port->shadowLCR |= (lData | lParity | lStop);
2511 edge_port->validDataMask = mask;
2513 /* Send the updated LCR value to the EdgePort */
2514 status = send_cmd_write_uart_register(edge_port, LCR,
2515 edge_port->shadowLCR);
2519 /* set up the MCR register and send it to the EdgePort */
2520 edge_port->shadowMCR = MCR_MASTER_IE;
2522 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2524 status = send_cmd_write_uart_register(edge_port, MCR,
2525 edge_port->shadowMCR);
2529 /* Determine divisor based on baud rate */
2530 baud = tty_get_baud_rate(tty);
2532 /* pick a default, any default... */
2536 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
2537 status = send_cmd_write_baud_rate(edge_port, baud);
2539 /* Speed change was not possible - put back the old speed */
2540 baud = tty_termios_baud_rate(old_termios);
2541 tty_encode_baud_rate(tty, baud, baud);
2546 /****************************************************************************
2548 * Turns a string from Unicode into ASCII.
2549 * Doesn't do a good job with any characters that are outside the normal
2550 * ASCII range, but it's only for debugging...
2551 * NOTE: expects the unicode in LE format
2552 ****************************************************************************/
2553 static void unicode_to_ascii(char *string, int buflen,
2554 __le16 *unicode, int unicode_size)
2558 if (buflen <= 0) /* never happens, but... */
2560 --buflen; /* space for nul */
2562 for (i = 0; i < unicode_size; i++) {
2565 string[i] = (char)(le16_to_cpu(unicode[i]));
2571 /****************************************************************************
2572 * get_manufacturing_desc
2573 * reads in the manufacturing descriptor and stores it into the serial
2575 ****************************************************************************/
2576 static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2578 struct device *dev = &edge_serial->serial->dev->dev;
2581 dev_dbg(dev, "getting manufacturer descriptor\n");
2583 response = rom_read(edge_serial->serial,
2584 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2585 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2586 EDGE_MANUF_DESC_LEN,
2587 (__u8 *)(&edge_serial->manuf_descriptor));
2590 dev_err(dev, "error in getting manufacturer descriptor\n");
2593 dev_dbg(dev, "**Manufacturer Descriptor\n");
2594 dev_dbg(dev, " RomSize: %dK\n",
2595 edge_serial->manuf_descriptor.RomSize);
2596 dev_dbg(dev, " RamSize: %dK\n",
2597 edge_serial->manuf_descriptor.RamSize);
2598 dev_dbg(dev, " CpuRev: %d\n",
2599 edge_serial->manuf_descriptor.CpuRev);
2600 dev_dbg(dev, " BoardRev: %d\n",
2601 edge_serial->manuf_descriptor.BoardRev);
2602 dev_dbg(dev, " NumPorts: %d\n",
2603 edge_serial->manuf_descriptor.NumPorts);
2604 dev_dbg(dev, " DescDate: %d/%d/%d\n",
2605 edge_serial->manuf_descriptor.DescDate[0],
2606 edge_serial->manuf_descriptor.DescDate[1],
2607 edge_serial->manuf_descriptor.DescDate[2]+1900);
2608 unicode_to_ascii(string, sizeof(string),
2609 edge_serial->manuf_descriptor.SerialNumber,
2610 edge_serial->manuf_descriptor.SerNumLength/2);
2611 dev_dbg(dev, " SerialNumber: %s\n", string);
2612 unicode_to_ascii(string, sizeof(string),
2613 edge_serial->manuf_descriptor.AssemblyNumber,
2614 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2615 dev_dbg(dev, " AssemblyNumber: %s\n", string);
2616 unicode_to_ascii(string, sizeof(string),
2617 edge_serial->manuf_descriptor.OemAssyNumber,
2618 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2619 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2620 dev_dbg(dev, " UartType: %d\n",
2621 edge_serial->manuf_descriptor.UartType);
2622 dev_dbg(dev, " IonPid: %d\n",
2623 edge_serial->manuf_descriptor.IonPid);
2624 dev_dbg(dev, " IonConfig: %d\n",
2625 edge_serial->manuf_descriptor.IonConfig);
2630 /****************************************************************************
2632 * reads in the bootloader descriptor and stores it into the serial
2634 ****************************************************************************/
2635 static void get_boot_desc(struct edgeport_serial *edge_serial)
2637 struct device *dev = &edge_serial->serial->dev->dev;
2640 dev_dbg(dev, "getting boot descriptor\n");
2642 response = rom_read(edge_serial->serial,
2643 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2644 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2646 (__u8 *)(&edge_serial->boot_descriptor));
2649 dev_err(dev, "error in getting boot descriptor\n");
2651 dev_dbg(dev, "**Boot Descriptor:\n");
2652 dev_dbg(dev, " BootCodeLength: %d\n",
2653 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2654 dev_dbg(dev, " MajorVersion: %d\n",
2655 edge_serial->boot_descriptor.MajorVersion);
2656 dev_dbg(dev, " MinorVersion: %d\n",
2657 edge_serial->boot_descriptor.MinorVersion);
2658 dev_dbg(dev, " BuildNumber: %d\n",
2659 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2660 dev_dbg(dev, " Capabilities: 0x%x\n",
2661 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2662 dev_dbg(dev, " UConfig0: %d\n",
2663 edge_serial->boot_descriptor.UConfig0);
2664 dev_dbg(dev, " UConfig1: %d\n",
2665 edge_serial->boot_descriptor.UConfig1);
2670 /****************************************************************************
2671 * load_application_firmware
2672 * This is called to load the application firmware to the device
2673 ****************************************************************************/
2674 static void load_application_firmware(struct edgeport_serial *edge_serial)
2676 struct device *dev = &edge_serial->serial->dev->dev;
2677 const struct ihex_binrec *rec;
2678 const struct firmware *fw;
2679 const char *fw_name;
2680 const char *fw_info;
2685 switch (edge_serial->product_info.iDownloadFile) {
2686 case EDGE_DOWNLOAD_FILE_I930:
2687 fw_info = "downloading firmware version (930)";
2688 fw_name = "edgeport/down.fw";
2691 case EDGE_DOWNLOAD_FILE_80251:
2692 fw_info = "downloading firmware version (80251)";
2693 fw_name = "edgeport/down2.fw";
2696 case EDGE_DOWNLOAD_FILE_NONE:
2697 dev_dbg(dev, "No download file specified, skipping download\n");
2704 response = request_ihex_firmware(&fw, fw_name,
2705 &edge_serial->serial->dev->dev);
2707 dev_err(dev, "Failed to load image \"%s\" err %d\n",
2712 rec = (const struct ihex_binrec *)fw->data;
2713 build = (rec->data[2] << 8) | rec->data[3];
2715 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
2717 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2718 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2719 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2721 for (rec = ihex_next_binrec(rec); rec;
2722 rec = ihex_next_binrec(rec)) {
2723 Operaddr = be32_to_cpu(rec->addr);
2724 response = sram_write(edge_serial->serial,
2727 be16_to_cpu(rec->len),
2730 dev_err(&edge_serial->serial->dev->dev,
2731 "sram_write failed (%x, %x, %d)\n",
2732 Operaddr >> 16, Operaddr & 0xFFFF,
2733 be16_to_cpu(rec->len));
2738 dev_dbg(dev, "sending exec_dl_code\n");
2739 response = usb_control_msg (edge_serial->serial->dev,
2740 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2741 USB_REQUEST_ION_EXEC_DL_CODE,
2742 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2744 release_firmware(fw);
2748 /****************************************************************************
2750 ****************************************************************************/
2751 static int edge_startup(struct usb_serial *serial)
2753 struct edgeport_serial *edge_serial;
2754 struct usb_device *dev;
2755 struct device *ddev = &serial->dev->dev;
2758 bool interrupt_in_found;
2760 bool bulk_out_found;
2761 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2762 EDGE_COMPATIBILITY_MASK1,
2763 EDGE_COMPATIBILITY_MASK2 };
2767 /* create our private serial structure */
2768 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2772 spin_lock_init(&edge_serial->es_lock);
2773 edge_serial->serial = serial;
2774 usb_set_serial_data(serial, edge_serial);
2776 /* get the name for the device from the device */
2777 i = usb_string(dev, dev->descriptor.iManufacturer,
2778 &edge_serial->name[0], MAX_NAME_LEN+1);
2781 edge_serial->name[i++] = ' ';
2782 usb_string(dev, dev->descriptor.iProduct,
2783 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2785 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2787 /* Read the epic descriptor */
2788 if (get_epic_descriptor(edge_serial) <= 0) {
2789 /* memcpy descriptor to Supports structures */
2790 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2791 sizeof(struct edge_compatibility_bits));
2793 /* get the manufacturing descriptor for this device */
2794 get_manufacturing_desc(edge_serial);
2796 /* get the boot descriptor */
2797 get_boot_desc(edge_serial);
2799 get_product_info(edge_serial);
2802 /* set the number of ports from the manufacturing description */
2803 /* serial->num_ports = serial->product_info.NumPorts; */
2804 if ((!edge_serial->is_epic) &&
2805 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2807 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2808 edge_serial->product_info.NumPorts,
2812 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
2814 /* If not an EPiC device */
2815 if (!edge_serial->is_epic) {
2816 /* now load the application firmware into this device */
2817 load_application_firmware(edge_serial);
2819 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
2821 /* Check current Edgeport EEPROM and update if necessary */
2822 update_edgeport_E2PROM(edge_serial);
2824 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
2826 /* set the configuration to use #1 */
2827 /* dev_dbg(ddev, "set_configuration 1\n"); */
2828 /* usb_set_configuration (dev, 1); */
2830 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
2831 edge_serial->product_info.FirmwareMajorVersion,
2832 edge_serial->product_info.FirmwareMinorVersion,
2833 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
2835 /* we set up the pointers to the endpoints in the edge_open function,
2836 * as the structures aren't created yet. */
2840 if (edge_serial->is_epic) {
2841 /* EPIC thing, set up our interrupt polling now and our read
2842 * urb, so that the device knows it really is connected. */
2843 interrupt_in_found = bulk_in_found = bulk_out_found = false;
2844 for (i = 0; i < serial->interface->altsetting[0]
2845 .desc.bNumEndpoints; ++i) {
2846 struct usb_endpoint_descriptor *endpoint;
2849 endpoint = &serial->interface->altsetting[0].
2851 buffer_size = usb_endpoint_maxp(endpoint);
2852 if (!interrupt_in_found &&
2853 (usb_endpoint_is_int_in(endpoint))) {
2854 /* we found a interrupt in endpoint */
2855 dev_dbg(ddev, "found interrupt in\n");
2857 /* not set up yet, so do it now */
2858 edge_serial->interrupt_read_urb =
2859 usb_alloc_urb(0, GFP_KERNEL);
2860 if (!edge_serial->interrupt_read_urb)
2863 edge_serial->interrupt_in_buffer =
2864 kmalloc(buffer_size, GFP_KERNEL);
2865 if (!edge_serial->interrupt_in_buffer) {
2866 usb_free_urb(edge_serial->interrupt_read_urb);
2869 edge_serial->interrupt_in_endpoint =
2870 endpoint->bEndpointAddress;
2872 /* set up our interrupt urb */
2874 edge_serial->interrupt_read_urb,
2877 endpoint->bEndpointAddress),
2878 edge_serial->interrupt_in_buffer,
2880 edge_interrupt_callback,
2882 endpoint->bInterval);
2884 interrupt_in_found = true;
2887 if (!bulk_in_found &&
2888 (usb_endpoint_is_bulk_in(endpoint))) {
2889 /* we found a bulk in endpoint */
2890 dev_dbg(ddev, "found bulk in\n");
2892 /* not set up yet, so do it now */
2893 edge_serial->read_urb =
2894 usb_alloc_urb(0, GFP_KERNEL);
2895 if (!edge_serial->read_urb)
2898 edge_serial->bulk_in_buffer =
2899 kmalloc(buffer_size, GFP_KERNEL);
2900 if (!edge_serial->bulk_in_buffer) {
2901 usb_free_urb(edge_serial->read_urb);
2904 edge_serial->bulk_in_endpoint =
2905 endpoint->bEndpointAddress;
2907 /* set up our bulk in urb */
2908 usb_fill_bulk_urb(edge_serial->read_urb, dev,
2909 usb_rcvbulkpipe(dev,
2910 endpoint->bEndpointAddress),
2911 edge_serial->bulk_in_buffer,
2912 usb_endpoint_maxp(endpoint),
2913 edge_bulk_in_callback,
2915 bulk_in_found = true;
2918 if (!bulk_out_found &&
2919 (usb_endpoint_is_bulk_out(endpoint))) {
2920 /* we found a bulk out endpoint */
2921 dev_dbg(ddev, "found bulk out\n");
2922 edge_serial->bulk_out_endpoint =
2923 endpoint->bEndpointAddress;
2924 bulk_out_found = true;
2928 if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
2929 dev_err(ddev, "Error - the proper endpoints were not found!\n");
2933 /* start interrupt read for this edgeport this interrupt will
2934 * continue as long as the edgeport is connected */
2935 response = usb_submit_urb(edge_serial->interrupt_read_urb,
2938 dev_err(ddev, "%s - Error %d submitting control urb\n",
2939 __func__, response);
2945 /****************************************************************************
2947 * This function is called whenever the device is removed from the usb bus.
2948 ****************************************************************************/
2949 static void edge_disconnect(struct usb_serial *serial)
2951 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2953 /* stop reads and writes on all ports */
2954 /* free up our endpoint stuff */
2955 if (edge_serial->is_epic) {
2956 usb_kill_urb(edge_serial->interrupt_read_urb);
2957 usb_free_urb(edge_serial->interrupt_read_urb);
2958 kfree(edge_serial->interrupt_in_buffer);
2960 usb_kill_urb(edge_serial->read_urb);
2961 usb_free_urb(edge_serial->read_urb);
2962 kfree(edge_serial->bulk_in_buffer);
2967 /****************************************************************************
2969 * This function is called when the device structure is deallocated.
2970 ****************************************************************************/
2971 static void edge_release(struct usb_serial *serial)
2973 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2978 static int edge_port_probe(struct usb_serial_port *port)
2980 struct edgeport_port *edge_port;
2982 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2986 spin_lock_init(&edge_port->ep_lock);
2987 edge_port->port = port;
2989 usb_set_serial_port_data(port, edge_port);
2994 static int edge_port_remove(struct usb_serial_port *port)
2996 struct edgeport_port *edge_port;
2998 edge_port = usb_get_serial_port_data(port);
3004 module_usb_serial_driver(serial_drivers, id_table_combined);
3006 MODULE_AUTHOR(DRIVER_AUTHOR);
3007 MODULE_DESCRIPTION(DRIVER_DESC);
3008 MODULE_LICENSE("GPL");
3009 MODULE_FIRMWARE("edgeport/boot.fw");
3010 MODULE_FIRMWARE("edgeport/boot2.fw");
3011 MODULE_FIRMWARE("edgeport/down.fw");
3012 MODULE_FIRMWARE("edgeport/down2.fw");