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 */
57 #define DRIVER_VERSION "v2.7"
58 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
59 #define DRIVER_DESC "Edgeport USB Serial Driver"
61 #define MAX_NAME_LEN 64
63 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
64 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
65 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
67 /* receive port state */
69 EXPECT_HDR1 = 0, /* Expect header byte 1 */
70 EXPECT_HDR2 = 1, /* Expect header byte 2 */
71 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
72 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
77 * This Transmit queue is an extension of the edgeport Rx buffer.
78 * The maximum amount of data buffered in both the edgeport
79 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
82 unsigned int head; /* index to head pointer (write) */
83 unsigned int tail; /* index to tail pointer (read) */
84 unsigned int count; /* Bytes in queue */
85 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
86 unsigned char *fifo; /* allocated Buffer */
89 /* This structure holds all of the local port information */
90 struct edgeport_port {
91 __u16 txCredits; /* our current credits for this port */
92 __u16 maxTxCredits; /* the max size of the port */
94 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
95 struct urb *write_urb; /* write URB for this port */
96 bool write_in_progress; /* 'true' while a write URB is outstanding */
99 __u8 shadowLCR; /* last LCR value received */
100 __u8 shadowMCR; /* last MCR value received */
101 __u8 shadowMSR; /* last MSR value received */
102 __u8 shadowLSR; /* last LSR value received */
103 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
104 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
112 bool chaseResponsePending;
114 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
115 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
116 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
117 wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
119 struct async_icount icount;
120 struct usb_serial_port *port; /* loop back to the owner of this object */
124 /* This structure holds all of the individual device information */
125 struct edgeport_serial {
126 char name[MAX_NAME_LEN+2]; /* string name of this device */
128 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
129 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
130 struct edgeport_product_info product_info; /* Product Info */
131 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
132 int is_epic; /* flag if EPiC device or not */
134 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
135 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
136 struct urb *interrupt_read_urb; /* our interrupt urb */
138 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
139 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
140 struct urb *read_urb; /* our bulk read urb */
141 bool read_in_progress;
144 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
146 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
148 enum RXSTATE rxState; /* the current state of the bulk receive processor */
149 __u8 rxHeader1; /* receive header byte 1 */
150 __u8 rxHeader2; /* receive header byte 2 */
151 __u8 rxHeader3; /* receive header byte 3 */
152 __u8 rxPort; /* the port that we are currently receiving data for */
153 __u8 rxStatusCode; /* the receive status code */
154 __u8 rxStatusParam; /* the receive status paramater */
155 __s16 rxBytesRemaining; /* the number of port bytes left to read */
156 struct usb_serial *serial; /* loop back to the owner of this object */
159 /* baud rate information */
160 struct divisor_table_entry {
166 * Define table of divisors for Rev A EdgePort/4 hardware
167 * These assume a 3.6864MHz crystal, the standard /16, and
171 static const struct divisor_table_entry divisor_table[] = {
174 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
175 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
193 /* local variables */
196 static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */
199 /* local function prototypes */
201 /* function prototypes for all URB callbacks */
202 static void edge_interrupt_callback(struct urb *urb);
203 static void edge_bulk_in_callback(struct urb *urb);
204 static void edge_bulk_out_data_callback(struct urb *urb);
205 static void edge_bulk_out_cmd_callback(struct urb *urb);
207 /* function prototypes for the usbserial callbacks */
208 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port,
210 static void edge_close(struct tty_struct *tty, struct usb_serial_port *port,
212 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
213 const unsigned char *buf, int count);
214 static int edge_write_room(struct tty_struct *tty);
215 static int edge_chars_in_buffer(struct tty_struct *tty);
216 static void edge_throttle(struct tty_struct *tty);
217 static void edge_unthrottle(struct tty_struct *tty);
218 static void edge_set_termios(struct tty_struct *tty,
219 struct usb_serial_port *port,
220 struct ktermios *old_termios);
221 static int edge_ioctl(struct tty_struct *tty, struct file *file,
222 unsigned int cmd, unsigned long arg);
223 static void edge_break(struct tty_struct *tty, int break_state);
224 static int edge_tiocmget(struct tty_struct *tty, struct file *file);
225 static int edge_tiocmset(struct tty_struct *tty, struct file *file,
226 unsigned int set, unsigned int clear);
227 static int edge_startup(struct usb_serial *serial);
228 static void edge_shutdown(struct usb_serial *serial);
230 #include "io_tables.h" /* all of the devices that this driver supports */
232 /* function prototypes for all of our local functions */
234 static void process_rcvd_data(struct edgeport_serial *edge_serial,
235 unsigned char *buffer, __u16 bufferLength);
236 static void process_rcvd_status(struct edgeport_serial *edge_serial,
237 __u8 byte2, __u8 byte3);
238 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
239 unsigned char *data, int length);
240 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
241 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
242 __u8 lsr, __u8 data);
243 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
245 static int calc_baud_rate_divisor(int baud_rate, int *divisor);
246 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
248 static void change_port_settings(struct tty_struct *tty,
249 struct edgeport_port *edge_port,
250 struct ktermios *old_termios);
251 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
252 __u8 regNum, __u8 regValue);
253 static int write_cmd_usb(struct edgeport_port *edge_port,
254 unsigned char *buffer, int writeLength);
255 static void send_more_port_data(struct edgeport_serial *edge_serial,
256 struct edgeport_port *edge_port);
258 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
259 __u16 length, const __u8 *data);
260 static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
261 __u16 length, __u8 *data);
262 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
263 __u16 length, const __u8 *data);
264 static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
265 static void get_boot_desc(struct edgeport_serial *edge_serial);
266 static void load_application_firmware(struct edgeport_serial *edge_serial);
268 static void unicode_to_ascii(char *string, int buflen,
269 __le16 *unicode, int unicode_size);
272 /* ************************************************************************ */
273 /* ************************************************************************ */
274 /* ************************************************************************ */
275 /* ************************************************************************ */
277 /************************************************************************
279 * update_edgeport_E2PROM() Compare current versions of *
280 * Boot ROM and Manufacture *
281 * Descriptors with versions *
282 * embedded in this driver *
284 ************************************************************************/
285 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
289 __u8 BootMajorVersion;
290 __u8 BootMinorVersion;
291 __u16 BootBuildNumber;
293 const struct ihex_binrec *rec;
294 const struct firmware *fw;
298 switch (edge_serial->product_info.iDownloadFile) {
299 case EDGE_DOWNLOAD_FILE_I930:
300 fw_name = "edgeport/boot.fw";
302 case EDGE_DOWNLOAD_FILE_80251:
303 fw_name = "edgeport/boot2.fw";
309 response = request_ihex_firmware(&fw, fw_name,
310 &edge_serial->serial->dev->dev);
312 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
317 rec = (const struct ihex_binrec *)fw->data;
318 BootMajorVersion = rec->data[0];
319 BootMinorVersion = rec->data[1];
320 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
322 /* Check Boot Image Version */
323 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
324 (edge_serial->boot_descriptor.MinorVersion << 16) +
325 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
327 BootNewVer = (BootMajorVersion << 24) +
328 (BootMinorVersion << 16) +
331 dbg("Current Boot Image version %d.%d.%d",
332 edge_serial->boot_descriptor.MajorVersion,
333 edge_serial->boot_descriptor.MinorVersion,
334 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
337 if (BootNewVer > BootCurVer) {
338 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
339 edge_serial->boot_descriptor.MajorVersion,
340 edge_serial->boot_descriptor.MinorVersion,
341 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
342 BootMajorVersion, BootMinorVersion, BootBuildNumber);
344 dbg("Downloading new Boot Image");
346 for (rec = ihex_next_binrec(rec); rec;
347 rec = ihex_next_binrec(rec)) {
348 Bootaddr = be32_to_cpu(rec->addr);
349 response = rom_write(edge_serial->serial,
352 be16_to_cpu(rec->len),
355 dev_err(&edge_serial->serial->dev->dev,
356 "rom_write failed (%x, %x, %d)\n",
357 Bootaddr >> 16, Bootaddr & 0xFFFF,
358 be16_to_cpu(rec->len));
363 dbg("Boot Image -- already up to date");
365 release_firmware(fw);
369 /************************************************************************
371 * Get string descriptor from device *
373 ************************************************************************/
374 static int get_string(struct usb_device *dev, int Id, char *string, int buflen)
376 struct usb_string_descriptor StringDesc;
377 struct usb_string_descriptor *pStringDesc;
379 dbg("%s - USB String ID = %d", __func__, Id);
381 if (!usb_get_descriptor(dev, USB_DT_STRING, Id,
382 &StringDesc, sizeof(StringDesc)))
385 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
389 if (!usb_get_descriptor(dev, USB_DT_STRING, Id,
390 pStringDesc, StringDesc.bLength)) {
395 unicode_to_ascii(string, buflen,
396 pStringDesc->wData, pStringDesc->bLength/2);
399 dbg("%s - USB String %s", __func__, string);
400 return strlen(string);
405 /************************************************************************
407 * Get string descriptor from device
409 ************************************************************************/
410 static int get_string_desc(struct usb_device *dev, int Id,
411 struct usb_string_descriptor **pRetDesc)
413 struct usb_string_descriptor StringDesc;
414 struct usb_string_descriptor *pStringDesc;
416 dbg("%s - USB String ID = %d", __func__, Id);
418 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
422 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
426 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
427 StringDesc.bLength)) {
432 *pRetDesc = pStringDesc;
437 static void dump_product_info(struct edgeport_product_info *product_info)
439 /* Dump Product Info structure */
440 dbg("**Product Information:");
441 dbg(" ProductId %x", product_info->ProductId);
442 dbg(" NumPorts %d", product_info->NumPorts);
443 dbg(" ProdInfoVer %d", product_info->ProdInfoVer);
444 dbg(" IsServer %d", product_info->IsServer);
445 dbg(" IsRS232 %d", product_info->IsRS232);
446 dbg(" IsRS422 %d", product_info->IsRS422);
447 dbg(" IsRS485 %d", product_info->IsRS485);
448 dbg(" RomSize %d", product_info->RomSize);
449 dbg(" RamSize %d", product_info->RamSize);
450 dbg(" CpuRev %x", product_info->CpuRev);
451 dbg(" BoardRev %x", product_info->BoardRev);
452 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
453 product_info->BootMinorVersion,
454 le16_to_cpu(product_info->BootBuildNumber));
455 dbg(" FirmwareMajorVersion %d.%d.%d",
456 product_info->FirmwareMajorVersion,
457 product_info->FirmwareMinorVersion,
458 le16_to_cpu(product_info->FirmwareBuildNumber));
459 dbg(" ManufactureDescDate %d/%d/%d",
460 product_info->ManufactureDescDate[0],
461 product_info->ManufactureDescDate[1],
462 product_info->ManufactureDescDate[2]+1900);
463 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
464 dbg(" EpicVer %d", product_info->EpicVer);
467 static void get_product_info(struct edgeport_serial *edge_serial)
469 struct edgeport_product_info *product_info = &edge_serial->product_info;
471 memset(product_info, 0, sizeof(struct edgeport_product_info));
473 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
474 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
475 product_info->ProdInfoVer = 0;
477 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
478 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
479 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
480 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
482 product_info->BootMajorVersion =
483 edge_serial->boot_descriptor.MajorVersion;
484 product_info->BootMinorVersion =
485 edge_serial->boot_descriptor.MinorVersion;
486 product_info->BootBuildNumber =
487 edge_serial->boot_descriptor.BuildNumber;
489 memcpy(product_info->ManufactureDescDate,
490 edge_serial->manuf_descriptor.DescDate,
491 sizeof(edge_serial->manuf_descriptor.DescDate));
493 /* check if this is 2nd generation hardware */
494 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
495 & ION_DEVICE_ID_80251_NETCHIP)
496 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
498 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
500 /* Determine Product type and set appropriate flags */
501 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
502 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
503 case ION_DEVICE_ID_EDGEPORT_4T:
504 case ION_DEVICE_ID_EDGEPORT_4:
505 case ION_DEVICE_ID_EDGEPORT_2:
506 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
507 case ION_DEVICE_ID_EDGEPORT_8:
508 case ION_DEVICE_ID_EDGEPORT_421:
509 case ION_DEVICE_ID_EDGEPORT_21:
510 case ION_DEVICE_ID_EDGEPORT_2_DIN:
511 case ION_DEVICE_ID_EDGEPORT_4_DIN:
512 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
513 product_info->IsRS232 = 1;
516 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
517 product_info->IsRS422 = 1;
518 product_info->IsRS485 = 1;
521 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
522 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
523 product_info->IsRS422 = 1;
527 dump_product_info(product_info);
530 static int get_epic_descriptor(struct edgeport_serial *ep)
533 struct usb_serial *serial = ep->serial;
534 struct edgeport_product_info *product_info = &ep->product_info;
535 struct edge_compatibility_descriptor *epic = &ep->epic_descriptor;
536 struct edge_compatibility_bits *bits;
539 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
540 USB_REQUEST_ION_GET_EPIC_DESC,
542 &ep->epic_descriptor,
543 sizeof(struct edge_compatibility_descriptor),
546 dbg("%s result = %d", __func__, result);
550 memset(product_info, 0, sizeof(struct edgeport_product_info));
552 product_info->NumPorts = epic->NumPorts;
553 product_info->ProdInfoVer = 0;
554 product_info->FirmwareMajorVersion = epic->MajorVersion;
555 product_info->FirmwareMinorVersion = epic->MinorVersion;
556 product_info->FirmwareBuildNumber = epic->BuildNumber;
557 product_info->iDownloadFile = epic->iDownloadFile;
558 product_info->EpicVer = epic->EpicVer;
559 product_info->Epic = epic->Supports;
560 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
561 dump_product_info(product_info);
563 bits = &ep->epic_descriptor.Supports;
564 dbg("**EPIC descriptor:");
565 dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE");
566 dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE");
567 dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE");
568 dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE");
569 dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
570 dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
571 dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE");
572 dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE");
573 dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
574 dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE");
575 dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE");
576 dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
577 dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE");
584 /************************************************************************/
585 /************************************************************************/
586 /* U S B C A L L B A C K F U N C T I O N S */
587 /* U S B C A L L B A C K F U N C T I O N S */
588 /************************************************************************/
589 /************************************************************************/
591 /*****************************************************************************
592 * edge_interrupt_callback
593 * this is the callback function for when we have received data on the
594 * interrupt endpoint.
595 *****************************************************************************/
596 static void edge_interrupt_callback(struct urb *urb)
598 struct edgeport_serial *edge_serial = urb->context;
599 struct edgeport_port *edge_port;
600 struct usb_serial_port *port;
601 struct tty_struct *tty;
602 unsigned char *data = urb->transfer_buffer;
603 int length = urb->actual_length;
609 int status = urb->status;
620 /* this urb is terminated, clean up */
621 dbg("%s - urb shutting down with status: %d",
625 dbg("%s - nonzero urb status received: %d", __func__, status);
629 /* process this interrupt-read even if there are no ports open */
631 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
632 __func__, length, data);
635 bytes_avail = data[0] | (data[1] << 8);
637 spin_lock(&edge_serial->es_lock);
638 edge_serial->rxBytesAvail += bytes_avail;
639 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress);
641 if (edge_serial->rxBytesAvail > 0 &&
642 !edge_serial->read_in_progress) {
643 dbg("%s - posting a read", __func__);
644 edge_serial->read_in_progress = true;
646 /* we have pending bytes on the
647 bulk in pipe, send a request */
648 edge_serial->read_urb->dev = edge_serial->serial->dev;
649 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
651 dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result);
652 edge_serial->read_in_progress = false;
655 spin_unlock(&edge_serial->es_lock);
658 /* grab the txcredits for the ports if available */
661 while ((position < length) &&
662 (portNumber < edge_serial->serial->num_ports)) {
663 txCredits = data[position] | (data[position+1] << 8);
665 port = edge_serial->serial->port[portNumber];
666 edge_port = usb_get_serial_port_data(port);
667 if (edge_port->open) {
668 spin_lock(&edge_port->ep_lock);
669 edge_port->txCredits += txCredits;
670 spin_unlock(&edge_port->ep_lock);
671 dbg("%s - txcredits for port%d = %d",
672 __func__, portNumber,
673 edge_port->txCredits);
675 /* tell the tty driver that something
677 tty = tty_port_tty_get(
678 &edge_port->port->port);
683 /* Since we have more credit, check
684 if more data can be sent */
685 send_more_port_data(edge_serial,
695 result = usb_submit_urb(urb, GFP_ATOMIC);
697 dev_err(&urb->dev->dev,
698 "%s - Error %d submitting control urb\n",
703 /*****************************************************************************
704 * edge_bulk_in_callback
705 * this is the callback function for when we have received data on the
707 *****************************************************************************/
708 static void edge_bulk_in_callback(struct urb *urb)
710 struct edgeport_serial *edge_serial = urb->context;
711 unsigned char *data = urb->transfer_buffer;
713 __u16 raw_data_length;
714 int status = urb->status;
719 dbg("%s - nonzero read bulk status received: %d",
721 edge_serial->read_in_progress = false;
725 if (urb->actual_length == 0) {
726 dbg("%s - read bulk callback with no data", __func__);
727 edge_serial->read_in_progress = false;
731 raw_data_length = urb->actual_length;
733 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
734 __func__, raw_data_length, data);
736 spin_lock(&edge_serial->es_lock);
738 /* decrement our rxBytes available by the number that we just got */
739 edge_serial->rxBytesAvail -= raw_data_length;
741 dbg("%s - Received = %d, rxBytesAvail %d", __func__,
742 raw_data_length, edge_serial->rxBytesAvail);
744 process_rcvd_data(edge_serial, data, urb->actual_length);
746 /* check to see if there's any more data for us to read */
747 if (edge_serial->rxBytesAvail > 0) {
748 dbg("%s - posting a read", __func__);
749 edge_serial->read_urb->dev = edge_serial->serial->dev;
750 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
752 dev_err(&urb->dev->dev,
753 "%s - usb_submit_urb(read bulk) failed, "
754 "retval = %d\n", __func__, retval);
755 edge_serial->read_in_progress = false;
758 edge_serial->read_in_progress = false;
761 spin_unlock(&edge_serial->es_lock);
765 /*****************************************************************************
766 * edge_bulk_out_data_callback
767 * this is the callback function for when we have finished sending
768 * serial data on the bulk out endpoint.
769 *****************************************************************************/
770 static void edge_bulk_out_data_callback(struct urb *urb)
772 struct edgeport_port *edge_port = urb->context;
773 struct tty_struct *tty;
774 int status = urb->status;
779 dbg("%s - nonzero write bulk status received: %d",
783 tty = tty_port_tty_get(&edge_port->port->port);
785 if (tty && edge_port->open) {
786 /* let the tty driver wakeup if it has a special
787 write_wakeup function */
792 /* Release the Write URB */
793 edge_port->write_in_progress = false;
795 /* Check if more data needs to be sent */
796 send_more_port_data((struct edgeport_serial *)
797 (usb_get_serial_data(edge_port->port->serial)), edge_port);
801 /*****************************************************************************
803 * this is the callback function for when we have finished sending a
804 * command on the bulk out endpoint.
805 *****************************************************************************/
806 static void edge_bulk_out_cmd_callback(struct urb *urb)
808 struct edgeport_port *edge_port = urb->context;
809 struct tty_struct *tty;
810 int status = urb->status;
814 atomic_dec(&CmdUrbs);
815 dbg("%s - FREE URB %p (outstanding %d)", __func__,
816 urb, atomic_read(&CmdUrbs));
819 /* clean up the transfer buffer */
820 kfree(urb->transfer_buffer);
822 /* Free the command urb */
826 dbg("%s - nonzero write bulk status received: %d",
831 /* Get pointer to tty */
832 tty = tty_port_tty_get(&edge_port->port->port);
834 /* tell the tty driver that something has changed */
835 if (tty && edge_port->open)
839 /* we have completed the command */
840 edge_port->commandPending = false;
841 wake_up(&edge_port->wait_command);
845 /*****************************************************************************
846 * Driver tty interface functions
847 *****************************************************************************/
849 /*****************************************************************************
851 * this function is called by the tty driver when a port is opened
852 * If successful, we return 0
853 * Otherwise we return a negative error number.
854 *****************************************************************************/
855 static int edge_open(struct tty_struct *tty,
856 struct usb_serial_port *port, struct file *filp)
858 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
859 struct usb_serial *serial;
860 struct edgeport_serial *edge_serial;
863 dbg("%s - port %d", __func__, port->number);
865 if (edge_port == NULL)
868 /* see if we've set up our endpoint info yet (can't set it up
869 in edge_startup as the structures were not set up at that time.) */
870 serial = port->serial;
871 edge_serial = usb_get_serial_data(serial);
872 if (edge_serial == NULL)
874 if (edge_serial->interrupt_in_buffer == NULL) {
875 struct usb_serial_port *port0 = serial->port[0];
877 /* not set up yet, so do it now */
878 edge_serial->interrupt_in_buffer =
879 port0->interrupt_in_buffer;
880 edge_serial->interrupt_in_endpoint =
881 port0->interrupt_in_endpointAddress;
882 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
883 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
884 edge_serial->bulk_in_endpoint =
885 port0->bulk_in_endpointAddress;
886 edge_serial->read_urb = port0->read_urb;
887 edge_serial->bulk_out_endpoint =
888 port0->bulk_out_endpointAddress;
890 /* set up our interrupt urb */
891 usb_fill_int_urb(edge_serial->interrupt_read_urb,
893 usb_rcvintpipe(serial->dev,
894 port0->interrupt_in_endpointAddress),
895 port0->interrupt_in_buffer,
896 edge_serial->interrupt_read_urb->transfer_buffer_length,
897 edge_interrupt_callback, edge_serial,
898 edge_serial->interrupt_read_urb->interval);
900 /* set up our bulk in urb */
901 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
902 usb_rcvbulkpipe(serial->dev,
903 port0->bulk_in_endpointAddress),
904 port0->bulk_in_buffer,
905 edge_serial->read_urb->transfer_buffer_length,
906 edge_bulk_in_callback, edge_serial);
907 edge_serial->read_in_progress = false;
909 /* start interrupt read for this edgeport
910 * this interrupt will continue as long
911 * as the edgeport is connected */
912 response = usb_submit_urb(edge_serial->interrupt_read_urb,
916 "%s - Error %d submitting control urb\n",
921 /* initialize our wait queues */
922 init_waitqueue_head(&edge_port->wait_open);
923 init_waitqueue_head(&edge_port->wait_chase);
924 init_waitqueue_head(&edge_port->delta_msr_wait);
925 init_waitqueue_head(&edge_port->wait_command);
927 /* initialize our icount structure */
928 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
930 /* initialize our port settings */
931 edge_port->txCredits = 0; /* Can't send any data yet */
932 /* Must always set this bit to enable ints! */
933 edge_port->shadowMCR = MCR_MASTER_IE;
934 edge_port->chaseResponsePending = false;
936 /* send a open port command */
937 edge_port->openPending = true;
938 edge_port->open = false;
939 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
942 dev_err(&port->dev, "%s - error sending open port command\n",
944 edge_port->openPending = false;
948 /* now wait for the port to be completely opened */
949 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
952 if (!edge_port->open) {
954 dbg("%s - open timedout", __func__);
955 edge_port->openPending = false;
959 /* create the txfifo */
960 edge_port->txfifo.head = 0;
961 edge_port->txfifo.tail = 0;
962 edge_port->txfifo.count = 0;
963 edge_port->txfifo.size = edge_port->maxTxCredits;
964 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
966 if (!edge_port->txfifo.fifo) {
967 dbg("%s - no memory", __func__);
968 edge_close(tty, port, filp);
972 /* Allocate a URB for the write */
973 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
974 edge_port->write_in_progress = false;
976 if (!edge_port->write_urb) {
977 dbg("%s - no memory", __func__);
978 edge_close(tty, port, filp);
982 dbg("%s(%d) - Initialize TX fifo to %d bytes",
983 __func__, port->number, edge_port->maxTxCredits);
985 dbg("%s exited", __func__);
991 /************************************************************************
993 * block_until_chase_response
995 * This function will block the close until one of the following:
996 * 1. Response to our Chase comes from Edgeport
997 * 2. A timeout of 10 seconds without activity has expired
998 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
1000 ************************************************************************/
1001 static void block_until_chase_response(struct edgeport_port *edge_port)
1009 /* Save Last credits */
1010 lastCredits = edge_port->txCredits;
1012 /* Did we get our Chase response */
1013 if (!edge_port->chaseResponsePending) {
1014 dbg("%s - Got Chase Response", __func__);
1016 /* did we get all of our credit back? */
1017 if (edge_port->txCredits == edge_port->maxTxCredits) {
1018 dbg("%s - Got all credits", __func__);
1023 /* Block the thread for a while */
1024 prepare_to_wait(&edge_port->wait_chase, &wait,
1025 TASK_UNINTERRUPTIBLE);
1026 schedule_timeout(timeout);
1027 finish_wait(&edge_port->wait_chase, &wait);
1029 if (lastCredits == edge_port->txCredits) {
1030 /* No activity.. count down. */
1033 edge_port->chaseResponsePending = false;
1034 dbg("%s - Chase TIMEOUT", __func__);
1038 /* Reset timeout value back to 10 seconds */
1039 dbg("%s - Last %d, Current %d", __func__,
1040 lastCredits, edge_port->txCredits);
1047 /************************************************************************
1049 * block_until_tx_empty
1051 * This function will block the close until one of the following:
1053 * 2. The edgeport has stopped
1054 * 3. A timeout of 3 seconds without activity has expired
1056 ************************************************************************/
1057 static void block_until_tx_empty(struct edgeport_port *edge_port)
1060 struct TxFifo *fifo = &edge_port->txfifo;
1062 int timeout = HZ/10;
1066 /* Save Last count */
1067 lastCount = fifo->count;
1069 /* Is the Edgeport Buffer empty? */
1070 if (lastCount == 0) {
1071 dbg("%s - TX Buffer Empty", __func__);
1075 /* Block the thread for a while */
1076 prepare_to_wait(&edge_port->wait_chase, &wait,
1077 TASK_UNINTERRUPTIBLE);
1078 schedule_timeout(timeout);
1079 finish_wait(&edge_port->wait_chase, &wait);
1081 dbg("%s wait", __func__);
1083 if (lastCount == fifo->count) {
1084 /* No activity.. count down. */
1087 dbg("%s - TIMEOUT", __func__);
1091 /* Reset timeout value back to seconds */
1098 /*****************************************************************************
1100 * this function is called by the tty driver when a port is closed
1101 *****************************************************************************/
1102 static void edge_close(struct tty_struct *tty,
1103 struct usb_serial_port *port, struct file *filp)
1105 struct edgeport_serial *edge_serial;
1106 struct edgeport_port *edge_port;
1109 dbg("%s - port %d", __func__, port->number);
1111 edge_serial = usb_get_serial_data(port->serial);
1112 edge_port = usb_get_serial_port_data(port);
1113 if (edge_serial == NULL || edge_port == NULL)
1116 /* block until tx is empty */
1117 block_until_tx_empty(edge_port);
1119 edge_port->closePending = true;
1121 if ((!edge_serial->is_epic) ||
1122 ((edge_serial->is_epic) &&
1123 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1124 /* flush and chase */
1125 edge_port->chaseResponsePending = true;
1127 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__);
1128 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1130 /* block until chase finished */
1131 block_until_chase_response(edge_port);
1133 edge_port->chaseResponsePending = false;
1136 if ((!edge_serial->is_epic) ||
1137 ((edge_serial->is_epic) &&
1138 (edge_serial->epic_descriptor.Supports.IOSPClose))) {
1139 /* close the port */
1140 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__);
1141 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1144 /* port->close = true; */
1145 edge_port->closePending = false;
1146 edge_port->open = false;
1147 edge_port->openPending = false;
1149 usb_kill_urb(edge_port->write_urb);
1151 if (edge_port->write_urb) {
1152 /* if this urb had a transfer buffer already
1153 (old transfer) free it */
1154 kfree(edge_port->write_urb->transfer_buffer);
1155 usb_free_urb(edge_port->write_urb);
1156 edge_port->write_urb = NULL;
1158 kfree(edge_port->txfifo.fifo);
1159 edge_port->txfifo.fifo = NULL;
1161 dbg("%s exited", __func__);
1164 /*****************************************************************************
1166 * this function is called by the tty driver when data should be written
1168 * If successful, we return the number of bytes written, otherwise we
1169 * return a negative error number.
1170 *****************************************************************************/
1171 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1172 const unsigned char *data, int count)
1174 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1175 struct TxFifo *fifo;
1180 unsigned long flags;
1182 dbg("%s - port %d", __func__, port->number);
1184 if (edge_port == NULL)
1187 /* get a pointer to the Tx fifo */
1188 fifo = &edge_port->txfifo;
1190 spin_lock_irqsave(&edge_port->ep_lock, flags);
1192 /* calculate number of bytes to put in fifo */
1193 copySize = min((unsigned int)count,
1194 (edge_port->txCredits - fifo->count));
1196 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes",
1197 __func__, port->number, count,
1198 edge_port->txCredits - fifo->count, copySize);
1200 /* catch writes of 0 bytes which the tty driver likes to give us,
1201 and when txCredits is empty */
1202 if (copySize == 0) {
1203 dbg("%s - copySize = Zero", __func__);
1208 * since we can never overflow the buffer we do not have to check for a
1211 * the copy is done is two parts -- first fill to the end of the buffer
1212 * then copy the reset from the start of the buffer
1214 bytesleft = fifo->size - fifo->head;
1215 firsthalf = min(bytesleft, copySize);
1216 dbg("%s - copy %d bytes of %d into fifo ", __func__,
1217 firsthalf, bytesleft);
1219 /* now copy our data */
1220 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1221 usb_serial_debug_data(debug, &port->dev, __func__,
1222 firsthalf, &fifo->fifo[fifo->head]);
1224 /* update the index and size */
1225 fifo->head += firsthalf;
1226 fifo->count += firsthalf;
1228 /* wrap the index */
1229 if (fifo->head == fifo->size)
1232 secondhalf = copySize-firsthalf;
1235 dbg("%s - copy rest of data %d", __func__, secondhalf);
1236 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1237 usb_serial_debug_data(debug, &port->dev, __func__,
1238 secondhalf, &fifo->fifo[fifo->head]);
1239 /* update the index and size */
1240 fifo->count += secondhalf;
1241 fifo->head += secondhalf;
1242 /* No need to check for wrap since we can not get to end of
1243 * the fifo in this part
1248 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1250 send_more_port_data((struct edgeport_serial *)
1251 usb_get_serial_data(port->serial), edge_port);
1253 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__,
1254 copySize, edge_port->txCredits, fifo->count);
1260 /************************************************************************
1262 * send_more_port_data()
1264 * This routine attempts to write additional UART transmit data
1265 * to a port over the USB bulk pipe. It is called (1) when new
1266 * data has been written to a port's TxBuffer from higher layers
1267 * (2) when the peripheral sends us additional TxCredits indicating
1268 * that it can accept more Tx data for a given port; and (3) when
1269 * a bulk write completes successfully and we want to see if we
1270 * can transmit more.
1272 ************************************************************************/
1273 static void send_more_port_data(struct edgeport_serial *edge_serial,
1274 struct edgeport_port *edge_port)
1276 struct TxFifo *fifo = &edge_port->txfifo;
1278 unsigned char *buffer;
1284 unsigned long flags;
1286 dbg("%s(%d)", __func__, edge_port->port->number);
1288 spin_lock_irqsave(&edge_port->ep_lock, flags);
1290 if (edge_port->write_in_progress ||
1292 (fifo->count == 0)) {
1293 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d",
1294 __func__, edge_port->port->number,
1295 fifo->count, edge_port->write_in_progress);
1299 /* since the amount of data in the fifo will always fit into the
1300 * edgeport buffer we do not need to check the write length
1302 * Do we have enough credits for this port to make it worthwhile
1303 * to bother queueing a write. If it's too small, say a few bytes,
1304 * it's better to wait for more credits so we can do a larger write.
1306 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1307 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d",
1308 __func__, edge_port->port->number, fifo->count,
1309 edge_port->txCredits);
1313 /* lock this write */
1314 edge_port->write_in_progress = true;
1316 /* get a pointer to the write_urb */
1317 urb = edge_port->write_urb;
1319 /* make sure transfer buffer is freed */
1320 kfree(urb->transfer_buffer);
1321 urb->transfer_buffer = NULL;
1323 /* build the data header for the buffer and port that we are about
1325 count = fifo->count;
1326 buffer = kmalloc(count+2, GFP_ATOMIC);
1327 if (buffer == NULL) {
1328 dev_err(&edge_port->port->dev,
1329 "%s - no more kernel memory...\n", __func__);
1330 edge_port->write_in_progress = false;
1333 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number
1334 - edge_port->port->serial->minor, count);
1335 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number
1336 - edge_port->port->serial->minor, count);
1338 /* now copy our data */
1339 bytesleft = fifo->size - fifo->tail;
1340 firsthalf = min(bytesleft, count);
1341 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1342 fifo->tail += firsthalf;
1343 fifo->count -= firsthalf;
1344 if (fifo->tail == fifo->size)
1347 secondhalf = count-firsthalf;
1349 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1351 fifo->tail += secondhalf;
1352 fifo->count -= secondhalf;
1356 usb_serial_debug_data(debug, &edge_port->port->dev,
1357 __func__, count, &buffer[2]);
1359 /* fill up the urb with all of our data and submit it */
1360 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1361 usb_sndbulkpipe(edge_serial->serial->dev,
1362 edge_serial->bulk_out_endpoint),
1364 edge_bulk_out_data_callback, edge_port);
1366 /* decrement the number of credits we have by the number we just sent */
1367 edge_port->txCredits -= count;
1368 edge_port->icount.tx += count;
1370 urb->dev = edge_serial->serial->dev;
1371 status = usb_submit_urb(urb, GFP_ATOMIC);
1373 /* something went wrong */
1374 dev_err(&edge_port->port->dev,
1375 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1377 edge_port->write_in_progress = false;
1379 /* revert the credits as something bad happened. */
1380 edge_port->txCredits += count;
1381 edge_port->icount.tx -= count;
1383 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d",
1384 __func__, count, edge_port->txCredits, fifo->count);
1387 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1391 /*****************************************************************************
1393 * this function is called by the tty driver when it wants to know how
1394 * many bytes of data we can accept for a specific port. If successful,
1395 * we return the amount of room that we have for this port (the txCredits)
1396 * otherwise we return a negative error number.
1397 *****************************************************************************/
1398 static int edge_write_room(struct tty_struct *tty)
1400 struct usb_serial_port *port = tty->driver_data;
1401 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1403 unsigned long flags;
1405 dbg("%s", __func__);
1407 if (edge_port == NULL)
1409 if (edge_port->closePending)
1412 dbg("%s - port %d", __func__, port->number);
1414 if (!edge_port->open) {
1415 dbg("%s - port not opened", __func__);
1419 /* total of both buffers is still txCredit */
1420 spin_lock_irqsave(&edge_port->ep_lock, flags);
1421 room = edge_port->txCredits - edge_port->txfifo.count;
1422 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1424 dbg("%s - returns %d", __func__, room);
1429 /*****************************************************************************
1430 * edge_chars_in_buffer
1431 * this function is called by the tty driver when it wants to know how
1432 * many bytes of data we currently have outstanding in the port (data that
1433 * has been written, but hasn't made it out the port yet)
1434 * If successful, we return the number of bytes left to be written in the
1436 * Otherwise we return a negative error number.
1437 *****************************************************************************/
1438 static int edge_chars_in_buffer(struct tty_struct *tty)
1440 struct usb_serial_port *port = tty->driver_data;
1441 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1443 unsigned long flags;
1445 dbg("%s", __func__);
1447 if (edge_port == NULL)
1449 if (edge_port->closePending)
1452 if (!edge_port->open) {
1453 dbg("%s - port not opened", __func__);
1457 spin_lock_irqsave(&edge_port->ep_lock, flags);
1458 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1459 edge_port->txfifo.count;
1460 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1462 dbg("%s(port %d) - returns %d", __func__,
1463 port->number, num_chars);
1470 /*****************************************************************************
1472 * this function is called by the tty driver when it wants to stop the data
1473 * being read from the port.
1474 *****************************************************************************/
1475 static void edge_throttle(struct tty_struct *tty)
1477 struct usb_serial_port *port = tty->driver_data;
1478 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1481 dbg("%s - port %d", __func__, port->number);
1483 if (edge_port == NULL)
1486 if (!edge_port->open) {
1487 dbg("%s - port not opened", __func__);
1491 /* if we are implementing XON/XOFF, send the stop character */
1493 unsigned char stop_char = STOP_CHAR(tty);
1494 status = edge_write(tty, port, &stop_char, 1);
1499 /* if we are implementing RTS/CTS, toggle that line */
1500 if (tty->termios->c_cflag & CRTSCTS) {
1501 edge_port->shadowMCR &= ~MCR_RTS;
1502 status = send_cmd_write_uart_register(edge_port, MCR,
1503 edge_port->shadowMCR);
1512 /*****************************************************************************
1514 * this function is called by the tty driver when it wants to resume the
1515 * data being read from the port (called after SerialThrottle is called)
1516 *****************************************************************************/
1517 static void edge_unthrottle(struct tty_struct *tty)
1519 struct usb_serial_port *port = tty->driver_data;
1520 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1523 dbg("%s - port %d", __func__, port->number);
1525 if (edge_port == NULL)
1528 if (!edge_port->open) {
1529 dbg("%s - port not opened", __func__);
1533 /* if we are implementing XON/XOFF, send the start character */
1535 unsigned char start_char = START_CHAR(tty);
1536 status = edge_write(tty, port, &start_char, 1);
1540 /* if we are implementing RTS/CTS, toggle that line */
1541 if (tty->termios->c_cflag & CRTSCTS) {
1542 edge_port->shadowMCR |= MCR_RTS;
1543 send_cmd_write_uart_register(edge_port, MCR,
1544 edge_port->shadowMCR);
1549 /*****************************************************************************
1551 * this function is called by the tty driver when it wants to change
1552 * the termios structure
1553 *****************************************************************************/
1554 static void edge_set_termios(struct tty_struct *tty,
1555 struct usb_serial_port *port, struct ktermios *old_termios)
1557 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1560 cflag = tty->termios->c_cflag;
1561 dbg("%s - clfag %08x iflag %08x", __func__,
1562 tty->termios->c_cflag, tty->termios->c_iflag);
1563 dbg("%s - old clfag %08x old iflag %08x", __func__,
1564 old_termios->c_cflag, old_termios->c_iflag);
1566 dbg("%s - port %d", __func__, port->number);
1568 if (edge_port == NULL)
1571 if (!edge_port->open) {
1572 dbg("%s - port not opened", __func__);
1576 /* change the port settings to the new ones specified */
1577 change_port_settings(tty, edge_port, old_termios);
1581 /*****************************************************************************
1582 * get_lsr_info - get line status register info
1584 * Purpose: Let user call ioctl() to get info when the UART physically
1585 * is emptied. On bus types like RS485, the transmitter must
1586 * release the bus after transmitting. This must be done when
1587 * the transmit shift register is empty, not be done when the
1588 * transmit holding register is empty. This functionality
1589 * allows an RS485 driver to be written in user space.
1590 *****************************************************************************/
1591 static int get_lsr_info(struct edgeport_port *edge_port,
1592 unsigned int __user *value)
1594 unsigned int result = 0;
1595 unsigned long flags;
1597 spin_lock_irqsave(&edge_port->ep_lock, flags);
1598 if (edge_port->maxTxCredits == edge_port->txCredits &&
1599 edge_port->txfifo.count == 0) {
1600 dbg("%s -- Empty", __func__);
1601 result = TIOCSER_TEMT;
1603 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1605 if (copy_to_user(value, &result, sizeof(int)))
1610 static int edge_tiocmset(struct tty_struct *tty, struct file *file,
1611 unsigned int set, unsigned int clear)
1613 struct usb_serial_port *port = tty->driver_data;
1614 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1617 dbg("%s - port %d", __func__, port->number);
1619 mcr = edge_port->shadowMCR;
1620 if (set & TIOCM_RTS)
1622 if (set & TIOCM_DTR)
1624 if (set & TIOCM_LOOP)
1625 mcr |= MCR_LOOPBACK;
1627 if (clear & TIOCM_RTS)
1629 if (clear & TIOCM_DTR)
1631 if (clear & TIOCM_LOOP)
1632 mcr &= ~MCR_LOOPBACK;
1634 edge_port->shadowMCR = mcr;
1636 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1641 static int edge_tiocmget(struct tty_struct *tty, struct file *file)
1643 struct usb_serial_port *port = tty->driver_data;
1644 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1645 unsigned int result = 0;
1649 dbg("%s - port %d", __func__, port->number);
1651 msr = edge_port->shadowMSR;
1652 mcr = edge_port->shadowMCR;
1653 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1654 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1655 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1656 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1657 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1658 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1661 dbg("%s -- %x", __func__, result);
1666 static int get_serial_info(struct edgeport_port *edge_port,
1667 struct serial_struct __user *retinfo)
1669 struct serial_struct tmp;
1674 memset(&tmp, 0, sizeof(tmp));
1676 tmp.type = PORT_16550A;
1677 tmp.line = edge_port->port->serial->minor;
1678 tmp.port = edge_port->port->number;
1680 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1681 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1682 tmp.baud_base = 9600;
1683 tmp.close_delay = 5*HZ;
1684 tmp.closing_wait = 30*HZ;
1686 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1693 /*****************************************************************************
1695 * this function handles any ioctl calls to the driver
1696 *****************************************************************************/
1697 static int edge_ioctl(struct tty_struct *tty, struct file *file,
1698 unsigned int cmd, unsigned long arg)
1700 struct usb_serial_port *port = tty->driver_data;
1702 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1703 struct async_icount cnow;
1704 struct async_icount cprev;
1705 struct serial_icounter_struct icount;
1707 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
1711 dbg("%s (%d) TIOCSERGETLSR", __func__, port->number);
1712 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1715 dbg("%s (%d) TIOCGSERIAL", __func__, port->number);
1716 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1719 dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
1720 cprev = edge_port->icount;
1722 prepare_to_wait(&edge_port->delta_msr_wait,
1723 &wait, TASK_INTERRUPTIBLE);
1725 finish_wait(&edge_port->delta_msr_wait, &wait);
1726 /* see if a signal did it */
1727 if (signal_pending(current))
1728 return -ERESTARTSYS;
1729 cnow = edge_port->icount;
1730 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1731 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1732 return -EIO; /* no change => error */
1733 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1734 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1735 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
1736 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
1745 cnow = edge_port->icount;
1746 memset(&icount, 0, sizeof(icount));
1747 icount.cts = cnow.cts;
1748 icount.dsr = cnow.dsr;
1749 icount.rng = cnow.rng;
1750 icount.dcd = cnow.dcd;
1751 icount.rx = cnow.rx;
1752 icount.tx = cnow.tx;
1753 icount.frame = cnow.frame;
1754 icount.overrun = cnow.overrun;
1755 icount.parity = cnow.parity;
1756 icount.brk = cnow.brk;
1757 icount.buf_overrun = cnow.buf_overrun;
1759 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d",
1760 __func__, port->number, icount.rx, icount.tx);
1761 if (copy_to_user((void __user *)arg, &icount, sizeof(icount)))
1765 return -ENOIOCTLCMD;
1769 /*****************************************************************************
1771 * this function sends a break to the port
1772 *****************************************************************************/
1773 static void edge_break(struct tty_struct *tty, int break_state)
1775 struct usb_serial_port *port = tty->driver_data;
1776 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1777 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1780 if ((!edge_serial->is_epic) ||
1781 ((edge_serial->is_epic) &&
1782 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1783 /* flush and chase */
1784 edge_port->chaseResponsePending = true;
1786 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__);
1787 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1789 /* block until chase finished */
1790 block_until_chase_response(edge_port);
1792 edge_port->chaseResponsePending = false;
1796 if ((!edge_serial->is_epic) ||
1797 ((edge_serial->is_epic) &&
1798 (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) {
1799 if (break_state == -1) {
1800 dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__);
1801 status = send_iosp_ext_cmd(edge_port,
1802 IOSP_CMD_SET_BREAK, 0);
1804 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__);
1805 status = send_iosp_ext_cmd(edge_port,
1806 IOSP_CMD_CLEAR_BREAK, 0);
1809 dbg("%s - error sending break set/clear command.",
1817 /*****************************************************************************
1819 * this function handles the data received on the bulk in pipe.
1820 *****************************************************************************/
1821 static void process_rcvd_data(struct edgeport_serial *edge_serial,
1822 unsigned char *buffer, __u16 bufferLength)
1824 struct usb_serial_port *port;
1825 struct edgeport_port *edge_port;
1826 struct tty_struct *tty;
1827 __u16 lastBufferLength;
1830 dbg("%s", __func__);
1832 lastBufferLength = bufferLength + 1;
1834 while (bufferLength > 0) {
1835 /* failsafe incase we get a message that we don't understand */
1836 if (lastBufferLength == bufferLength) {
1837 dbg("%s - stuck in loop, exiting it.", __func__);
1840 lastBufferLength = bufferLength;
1842 switch (edge_serial->rxState) {
1844 edge_serial->rxHeader1 = *buffer;
1848 if (bufferLength == 0) {
1849 edge_serial->rxState = EXPECT_HDR2;
1852 /* otherwise, drop on through */
1854 edge_serial->rxHeader2 = *buffer;
1858 dbg("%s - Hdr1=%02X Hdr2=%02X", __func__,
1859 edge_serial->rxHeader1, edge_serial->rxHeader2);
1860 /* Process depending on whether this header is
1863 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1864 /* Decode this status header and go to
1865 * EXPECT_HDR1 (if we can process the status
1866 * with only 2 bytes), or go to EXPECT_HDR3 to
1867 * get the third byte. */
1868 edge_serial->rxPort =
1869 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1870 edge_serial->rxStatusCode =
1871 IOSP_GET_STATUS_CODE(
1872 edge_serial->rxHeader1);
1874 if (!IOSP_STATUS_IS_2BYTE(
1875 edge_serial->rxStatusCode)) {
1876 /* This status needs additional bytes.
1877 * Save what we have and then wait for
1880 edge_serial->rxStatusParam
1881 = edge_serial->rxHeader2;
1882 edge_serial->rxState = EXPECT_HDR3;
1885 /* We have all the header bytes, process the
1887 process_rcvd_status(edge_serial,
1888 edge_serial->rxHeader2, 0);
1889 edge_serial->rxState = EXPECT_HDR1;
1892 edge_serial->rxPort =
1893 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1894 edge_serial->rxBytesRemaining =
1895 IOSP_GET_HDR_DATA_LEN(
1896 edge_serial->rxHeader1,
1897 edge_serial->rxHeader2);
1898 dbg("%s - Data for Port %u Len %u",
1900 edge_serial->rxPort,
1901 edge_serial->rxBytesRemaining);
1903 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1904 * ASSERT(DevExt->RxBytesRemaining <
1905 * IOSP_MAX_DATA_LENGTH);
1908 if (bufferLength == 0) {
1909 edge_serial->rxState = EXPECT_DATA;
1912 /* Else, drop through */
1914 case EXPECT_DATA: /* Expect data */
1915 if (bufferLength < edge_serial->rxBytesRemaining) {
1916 rxLen = bufferLength;
1917 /* Expect data to start next buffer */
1918 edge_serial->rxState = EXPECT_DATA;
1920 /* BufLen >= RxBytesRemaining */
1921 rxLen = edge_serial->rxBytesRemaining;
1922 /* Start another header next time */
1923 edge_serial->rxState = EXPECT_HDR1;
1926 bufferLength -= rxLen;
1927 edge_serial->rxBytesRemaining -= rxLen;
1929 /* spit this data back into the tty driver if this
1932 port = edge_serial->serial->port[
1933 edge_serial->rxPort];
1934 edge_port = usb_get_serial_port_data(port);
1935 if (edge_port->open) {
1936 tty = tty_port_tty_get(
1937 &edge_port->port->port);
1939 dbg("%s - Sending %d bytes to TTY for port %d",
1940 __func__, rxLen, edge_serial->rxPort);
1941 edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
1944 edge_port->icount.rx += rxLen;
1950 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1951 edge_serial->rxHeader3 = *buffer;
1955 /* We have all the header bytes, process the
1957 process_rcvd_status(edge_serial,
1958 edge_serial->rxStatusParam,
1959 edge_serial->rxHeader3);
1960 edge_serial->rxState = EXPECT_HDR1;
1967 /*****************************************************************************
1968 * process_rcvd_status
1969 * this function handles the any status messages received on the
1971 *****************************************************************************/
1972 static void process_rcvd_status(struct edgeport_serial *edge_serial,
1973 __u8 byte2, __u8 byte3)
1975 struct usb_serial_port *port;
1976 struct edgeport_port *edge_port;
1977 struct tty_struct *tty;
1978 __u8 code = edge_serial->rxStatusCode;
1980 /* switch the port pointer to the one being currently talked about */
1981 port = edge_serial->serial->port[edge_serial->rxPort];
1982 edge_port = usb_get_serial_port_data(port);
1983 if (edge_port == NULL) {
1984 dev_err(&edge_serial->serial->dev->dev,
1985 "%s - edge_port == NULL for port %d\n",
1986 __func__, edge_serial->rxPort);
1990 dbg("%s - port %d", __func__, edge_serial->rxPort);
1992 if (code == IOSP_EXT_STATUS) {
1994 case IOSP_EXT_STATUS_CHASE_RSP:
1995 /* we want to do EXT status regardless of port
1997 dbg("%s - Port %u EXT CHASE_RSP Data = %02x",
1998 __func__, edge_serial->rxPort, byte3);
1999 /* Currently, the only EXT_STATUS is Chase, so process
2000 * here instead of one more call to one more subroutine
2001 * If/when more EXT_STATUS, there'll be more work to do
2002 * Also, we currently clear flag and close the port
2003 * regardless of content of above's Byte3.
2004 * We could choose to do something else when Byte3 says
2005 * Timeout on Chase from Edgeport, like wait longer in
2006 * block_until_chase_response, but for now we don't.
2008 edge_port->chaseResponsePending = false;
2009 wake_up(&edge_port->wait_chase);
2012 case IOSP_EXT_STATUS_RX_CHECK_RSP:
2013 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __func__, edge_serial->rxPort, byte3);
2014 /* Port->RxCheckRsp = true; */
2019 if (code == IOSP_STATUS_OPEN_RSP) {
2020 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
2021 edge_port->maxTxCredits = edge_port->txCredits;
2022 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
2023 handle_new_msr(edge_port, byte2);
2025 /* send the current line settings to the port so we are
2026 in sync with any further termios calls */
2027 tty = tty_port_tty_get(&edge_port->port->port);
2029 change_port_settings(tty,
2030 edge_port, tty->termios);
2034 /* we have completed the open */
2035 edge_port->openPending = false;
2036 edge_port->open = true;
2037 wake_up(&edge_port->wait_open);
2041 /* If port is closed, silently discard all rcvd status. We can
2042 * have cases where buffered status is received AFTER the close
2043 * port command is sent to the Edgeport.
2045 if (!edge_port->open || edge_port->closePending)
2049 /* Not currently sent by Edgeport */
2050 case IOSP_STATUS_LSR:
2051 dbg("%s - Port %u LSR Status = %02x",
2052 __func__, edge_serial->rxPort, byte2);
2053 handle_new_lsr(edge_port, false, byte2, 0);
2056 case IOSP_STATUS_LSR_DATA:
2057 dbg("%s - Port %u LSR Status = %02x, Data = %02x",
2058 __func__, edge_serial->rxPort, byte2, byte3);
2059 /* byte2 is LSR Register */
2060 /* byte3 is broken data byte */
2061 handle_new_lsr(edge_port, true, byte2, byte3);
2064 * case IOSP_EXT_4_STATUS:
2065 * dbg("%s - Port %u LSR Status = %02x Data = %02x",
2066 * __func__, edge_serial->rxPort, byte2, byte3);
2069 case IOSP_STATUS_MSR:
2070 dbg("%s - Port %u MSR Status = %02x",
2071 __func__, edge_serial->rxPort, byte2);
2073 * Process this new modem status and generate appropriate
2074 * events, etc, based on the new status. This routine
2075 * also saves the MSR in Port->ShadowMsr.
2077 handle_new_msr(edge_port, byte2);
2081 dbg("%s - Unrecognized IOSP status code %u\n", __func__, code);
2088 /*****************************************************************************
2090 * this function passes data on to the tty flip buffer
2091 *****************************************************************************/
2092 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
2093 unsigned char *data, int length)
2098 cnt = tty_buffer_request_room(tty, length);
2100 dev_err(dev, "%s - dropping data, %d bytes lost\n",
2101 __func__, length - cnt);
2105 tty_insert_flip_string(tty, data, cnt);
2108 } while (length > 0);
2110 tty_flip_buffer_push(tty);
2114 /*****************************************************************************
2116 * this function handles any change to the msr register for a port.
2117 *****************************************************************************/
2118 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2120 struct async_icount *icount;
2122 dbg("%s %02x", __func__, newMsr);
2124 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
2125 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2126 icount = &edge_port->icount;
2128 /* update input line counters */
2129 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
2131 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
2133 if (newMsr & EDGEPORT_MSR_DELTA_CD)
2135 if (newMsr & EDGEPORT_MSR_DELTA_RI)
2137 wake_up_interruptible(&edge_port->delta_msr_wait);
2140 /* Save the new modem status */
2141 edge_port->shadowMSR = newMsr & 0xf0;
2147 /*****************************************************************************
2149 * this function handles any change to the lsr register for a port.
2150 *****************************************************************************/
2151 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
2152 __u8 lsr, __u8 data)
2154 __u8 newLsr = (__u8) (lsr & (__u8)
2155 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2156 struct async_icount *icount;
2158 dbg("%s - %02x", __func__, newLsr);
2160 edge_port->shadowLSR = lsr;
2162 if (newLsr & LSR_BREAK) {
2164 * Parity and Framing errors only count if they
2165 * occur exclusive of a break being
2168 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2171 /* Place LSR data byte into Rx buffer */
2173 struct tty_struct *tty =
2174 tty_port_tty_get(&edge_port->port->port);
2176 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
2180 /* update input line counters */
2181 icount = &edge_port->icount;
2182 if (newLsr & LSR_BREAK)
2184 if (newLsr & LSR_OVER_ERR)
2186 if (newLsr & LSR_PAR_ERR)
2188 if (newLsr & LSR_FRM_ERR)
2195 /****************************************************************************
2197 * writes a number of bytes to the Edgeport device's sram starting at the
2199 * If successful returns the number of bytes written, otherwise it returns
2200 * a negative error number of the problem.
2201 ****************************************************************************/
2202 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2203 __u16 length, const __u8 *data)
2206 __u16 current_length;
2207 unsigned char *transfer_buffer;
2209 dbg("%s - %x, %x, %d", __func__, extAddr, addr, length);
2211 transfer_buffer = kmalloc(64, GFP_KERNEL);
2212 if (!transfer_buffer) {
2213 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
2218 /* need to split these writes up into 64 byte chunks */
2220 while (length > 0) {
2222 current_length = 64;
2224 current_length = length;
2226 /* dbg("%s - writing %x, %x, %d", __func__,
2227 extAddr, addr, current_length); */
2228 memcpy(transfer_buffer, data, current_length);
2229 result = usb_control_msg(serial->dev,
2230 usb_sndctrlpipe(serial->dev, 0),
2231 USB_REQUEST_ION_WRITE_RAM,
2232 0x40, addr, extAddr, transfer_buffer,
2233 current_length, 300);
2236 length -= current_length;
2237 addr += current_length;
2238 data += current_length;
2241 kfree(transfer_buffer);
2246 /****************************************************************************
2248 * writes a number of bytes to the Edgeport device's ROM starting at the
2250 * If successful returns the number of bytes written, otherwise it returns
2251 * a negative error number of the problem.
2252 ****************************************************************************/
2253 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2254 __u16 length, const __u8 *data)
2257 __u16 current_length;
2258 unsigned char *transfer_buffer;
2260 /* dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); */
2262 transfer_buffer = kmalloc(64, GFP_KERNEL);
2263 if (!transfer_buffer) {
2264 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
2269 /* need to split these writes up into 64 byte chunks */
2271 while (length > 0) {
2273 current_length = 64;
2275 current_length = length;
2276 /* dbg("%s - writing %x, %x, %d", __func__,
2277 extAddr, addr, current_length); */
2278 memcpy(transfer_buffer, data, current_length);
2279 result = usb_control_msg(serial->dev,
2280 usb_sndctrlpipe(serial->dev, 0),
2281 USB_REQUEST_ION_WRITE_ROM, 0x40,
2283 transfer_buffer, current_length, 300);
2286 length -= current_length;
2287 addr += current_length;
2288 data += current_length;
2291 kfree(transfer_buffer);
2296 /****************************************************************************
2298 * reads a number of bytes from the Edgeport device starting at the given
2300 * If successful returns the number of bytes read, otherwise it returns
2301 * a negative error number of the problem.
2302 ****************************************************************************/
2303 static int rom_read(struct usb_serial *serial, __u16 extAddr,
2304 __u16 addr, __u16 length, __u8 *data)
2307 __u16 current_length;
2308 unsigned char *transfer_buffer;
2310 dbg("%s - %x, %x, %d", __func__, extAddr, addr, length);
2312 transfer_buffer = kmalloc(64, GFP_KERNEL);
2313 if (!transfer_buffer) {
2314 dev_err(&serial->dev->dev,
2315 "%s - kmalloc(%d) failed.\n", __func__, 64);
2319 /* need to split these reads up into 64 byte chunks */
2321 while (length > 0) {
2323 current_length = 64;
2325 current_length = length;
2326 /* dbg("%s - %x, %x, %d", __func__,
2327 extAddr, addr, current_length); */
2328 result = usb_control_msg(serial->dev,
2329 usb_rcvctrlpipe(serial->dev, 0),
2330 USB_REQUEST_ION_READ_ROM,
2331 0xC0, addr, extAddr, transfer_buffer,
2332 current_length, 300);
2335 memcpy(data, transfer_buffer, current_length);
2336 length -= current_length;
2337 addr += current_length;
2338 data += current_length;
2341 kfree(transfer_buffer);
2346 /****************************************************************************
2348 * Is used to send a IOSP message to the Edgeport device
2349 ****************************************************************************/
2350 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2351 __u8 command, __u8 param)
2353 unsigned char *buffer;
2354 unsigned char *currentCommand;
2358 dbg("%s - %d, %d", __func__, command, param);
2360 buffer = kmalloc(10, GFP_ATOMIC);
2362 dev_err(&edge_port->port->dev,
2363 "%s - kmalloc(%d) failed.\n", __func__, 10);
2367 currentCommand = buffer;
2369 MAKE_CMD_EXT_CMD(¤tCommand, &length,
2370 edge_port->port->number - edge_port->port->serial->minor,
2373 status = write_cmd_usb(edge_port, buffer, length);
2375 /* something bad happened, let's free up the memory */
2383 /*****************************************************************************
2385 * this function writes the given buffer out to the bulk write endpoint.
2386 *****************************************************************************/
2387 static int write_cmd_usb(struct edgeport_port *edge_port,
2388 unsigned char *buffer, int length)
2390 struct edgeport_serial *edge_serial =
2391 usb_get_serial_data(edge_port->port->serial);
2396 usb_serial_debug_data(debug, &edge_port->port->dev,
2397 __func__, length, buffer);
2399 /* Allocate our next urb */
2400 urb = usb_alloc_urb(0, GFP_ATOMIC);
2404 atomic_inc(&CmdUrbs);
2405 dbg("%s - ALLOCATE URB %p (outstanding %d)",
2406 __func__, urb, atomic_read(&CmdUrbs));
2408 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2409 usb_sndbulkpipe(edge_serial->serial->dev,
2410 edge_serial->bulk_out_endpoint),
2411 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2413 edge_port->commandPending = true;
2414 status = usb_submit_urb(urb, GFP_ATOMIC);
2417 /* something went wrong */
2418 dev_err(&edge_port->port->dev,
2419 "%s - usb_submit_urb(write command) failed, status = %d\n",
2423 atomic_dec(&CmdUrbs);
2427 /* wait for command to finish */
2428 timeout = COMMAND_TIMEOUT;
2430 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2432 if (edge_port->commandPending) {
2433 /* command timed out */
2434 dbg("%s - command timed out", __func__);
2442 /*****************************************************************************
2443 * send_cmd_write_baud_rate
2444 * this function sends the proper command to change the baud rate of the
2446 *****************************************************************************/
2447 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2450 struct edgeport_serial *edge_serial =
2451 usb_get_serial_data(edge_port->port->serial);
2452 unsigned char *cmdBuffer;
2453 unsigned char *currCmd;
2457 unsigned char number =
2458 edge_port->port->number - edge_port->port->serial->minor;
2460 if (edge_serial->is_epic &&
2461 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2462 dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d",
2463 edge_port->port->number, baudRate);
2467 dbg("%s - port = %d, baud = %d", __func__,
2468 edge_port->port->number, baudRate);
2470 status = calc_baud_rate_divisor(baudRate, &divisor);
2472 dev_err(&edge_port->port->dev, "%s - bad baud rate\n",
2477 /* Alloc memory for the string of commands. */
2478 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2480 dev_err(&edge_port->port->dev,
2481 "%s - kmalloc(%d) failed.\n", __func__, 0x100);
2484 currCmd = cmdBuffer;
2486 /* Enable access to divisor latch */
2487 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2489 /* Write the divisor itself */
2490 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2491 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2493 /* Restore original value to disable access to divisor latch */
2494 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2495 edge_port->shadowLCR);
2497 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2499 /* something bad happened, let's free up the memory */
2507 /*****************************************************************************
2508 * calc_baud_rate_divisor
2509 * this function calculates the proper baud rate divisor for the specified
2511 *****************************************************************************/
2512 static int calc_baud_rate_divisor(int baudrate, int *divisor)
2518 dbg("%s - %d", __func__, baudrate);
2520 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2521 if (divisor_table[i].BaudRate == baudrate) {
2522 *divisor = divisor_table[i].Divisor;
2527 /* We have tried all of the standard baud rates
2528 * lets try to calculate the divisor for this baud rate
2529 * Make sure the baud rate is reasonable */
2530 if (baudrate > 50 && baudrate < 230400) {
2532 custom = (__u16)((230400L + baudrate/2) / baudrate);
2536 dbg("%s - Baud %d = %d\n", __func__, baudrate, custom);
2544 /*****************************************************************************
2545 * send_cmd_write_uart_register
2546 * this function builds up a uart register message and sends to to the device.
2547 *****************************************************************************/
2548 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2549 __u8 regNum, __u8 regValue)
2551 struct edgeport_serial *edge_serial =
2552 usb_get_serial_data(edge_port->port->serial);
2553 unsigned char *cmdBuffer;
2554 unsigned char *currCmd;
2555 unsigned long cmdLen = 0;
2558 dbg("%s - write to %s register 0x%02x",
2559 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2561 if (edge_serial->is_epic &&
2562 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2564 dbg("SendCmdWriteUartReg - Not writing to MCR Register");
2568 if (edge_serial->is_epic &&
2569 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2571 dbg("SendCmdWriteUartReg - Not writing to LCR Register");
2575 /* Alloc memory for the string of commands. */
2576 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2577 if (cmdBuffer == NULL)
2580 currCmd = cmdBuffer;
2582 /* Build a cmd in the buffer to write the given register */
2583 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen,
2584 edge_port->port->number - edge_port->port->serial->minor,
2587 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2589 /* something bad happened, let's free up the memory */
2597 /*****************************************************************************
2598 * change_port_settings
2599 * This routine is called to set the UART on the device to match the
2600 * specified new settings.
2601 *****************************************************************************/
2603 static void change_port_settings(struct tty_struct *tty,
2604 struct edgeport_port *edge_port, struct ktermios *old_termios)
2606 struct edgeport_serial *edge_serial =
2607 usb_get_serial_data(edge_port->port->serial);
2618 dbg("%s - port %d", __func__, edge_port->port->number);
2620 if (!edge_port->open &&
2621 !edge_port->openPending) {
2622 dbg("%s - port not opened", __func__);
2626 cflag = tty->termios->c_cflag;
2628 switch (cflag & CSIZE) {
2630 lData = LCR_BITS_5; mask = 0x1f;
2631 dbg("%s - data bits = 5", __func__);
2634 lData = LCR_BITS_6; mask = 0x3f;
2635 dbg("%s - data bits = 6", __func__);
2638 lData = LCR_BITS_7; mask = 0x7f;
2639 dbg("%s - data bits = 7", __func__);
2644 dbg("%s - data bits = 8", __func__);
2648 lParity = LCR_PAR_NONE;
2649 if (cflag & PARENB) {
2650 if (cflag & CMSPAR) {
2651 if (cflag & PARODD) {
2652 lParity = LCR_PAR_MARK;
2653 dbg("%s - parity = mark", __func__);
2655 lParity = LCR_PAR_SPACE;
2656 dbg("%s - parity = space", __func__);
2658 } else if (cflag & PARODD) {
2659 lParity = LCR_PAR_ODD;
2660 dbg("%s - parity = odd", __func__);
2662 lParity = LCR_PAR_EVEN;
2663 dbg("%s - parity = even", __func__);
2666 dbg("%s - parity = none", __func__);
2669 if (cflag & CSTOPB) {
2671 dbg("%s - stop bits = 2", __func__);
2674 dbg("%s - stop bits = 1", __func__);
2677 /* figure out the flow control settings */
2678 rxFlow = txFlow = 0x00;
2679 if (cflag & CRTSCTS) {
2680 rxFlow |= IOSP_RX_FLOW_RTS;
2681 txFlow |= IOSP_TX_FLOW_CTS;
2682 dbg("%s - RTS/CTS is enabled", __func__);
2684 dbg("%s - RTS/CTS is disabled", __func__);
2687 /* if we are implementing XON/XOFF, set the start and stop character
2689 if (I_IXOFF(tty) || I_IXON(tty)) {
2690 unsigned char stop_char = STOP_CHAR(tty);
2691 unsigned char start_char = START_CHAR(tty);
2693 if ((!edge_serial->is_epic) ||
2694 ((edge_serial->is_epic) &&
2695 (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) {
2696 send_iosp_ext_cmd(edge_port,
2697 IOSP_CMD_SET_XON_CHAR, start_char);
2698 send_iosp_ext_cmd(edge_port,
2699 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2702 /* if we are implementing INBOUND XON/XOFF */
2704 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2705 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2706 __func__, start_char, stop_char);
2708 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2711 /* if we are implementing OUTBOUND XON/XOFF */
2713 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2714 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2715 __func__, start_char, stop_char);
2717 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2721 /* Set flow control to the configured value */
2722 if ((!edge_serial->is_epic) ||
2723 ((edge_serial->is_epic) &&
2724 (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)))
2725 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2726 if ((!edge_serial->is_epic) ||
2727 ((edge_serial->is_epic) &&
2728 (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)))
2729 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2732 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2733 edge_port->shadowLCR |= (lData | lParity | lStop);
2735 edge_port->validDataMask = mask;
2737 /* Send the updated LCR value to the EdgePort */
2738 status = send_cmd_write_uart_register(edge_port, LCR,
2739 edge_port->shadowLCR);
2743 /* set up the MCR register and send it to the EdgePort */
2744 edge_port->shadowMCR = MCR_MASTER_IE;
2746 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2748 status = send_cmd_write_uart_register(edge_port, MCR,
2749 edge_port->shadowMCR);
2753 /* Determine divisor based on baud rate */
2754 baud = tty_get_baud_rate(tty);
2756 /* pick a default, any default... */
2760 dbg("%s - baud rate = %d", __func__, baud);
2761 status = send_cmd_write_baud_rate(edge_port, baud);
2763 /* Speed change was not possible - put back the old speed */
2764 baud = tty_termios_baud_rate(old_termios);
2765 tty_encode_baud_rate(tty, baud, baud);
2771 /****************************************************************************
2773 * Turns a string from Unicode into ASCII.
2774 * Doesn't do a good job with any characters that are outside the normal
2775 * ASCII range, but it's only for debugging...
2776 * NOTE: expects the unicode in LE format
2777 ****************************************************************************/
2778 static void unicode_to_ascii(char *string, int buflen,
2779 __le16 *unicode, int unicode_size)
2783 if (buflen <= 0) /* never happens, but... */
2785 --buflen; /* space for nul */
2787 for (i = 0; i < unicode_size; i++) {
2790 string[i] = (char)(le16_to_cpu(unicode[i]));
2796 /****************************************************************************
2797 * get_manufacturing_desc
2798 * reads in the manufacturing descriptor and stores it into the serial
2800 ****************************************************************************/
2801 static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2805 dbg("getting manufacturer descriptor");
2807 response = rom_read(edge_serial->serial,
2808 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2809 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2810 EDGE_MANUF_DESC_LEN,
2811 (__u8 *)(&edge_serial->manuf_descriptor));
2814 dev_err(&edge_serial->serial->dev->dev,
2815 "error in getting manufacturer descriptor\n");
2818 dbg("**Manufacturer Descriptor");
2819 dbg(" RomSize: %dK",
2820 edge_serial->manuf_descriptor.RomSize);
2821 dbg(" RamSize: %dK",
2822 edge_serial->manuf_descriptor.RamSize);
2824 edge_serial->manuf_descriptor.CpuRev);
2825 dbg(" BoardRev: %d",
2826 edge_serial->manuf_descriptor.BoardRev);
2827 dbg(" NumPorts: %d",
2828 edge_serial->manuf_descriptor.NumPorts);
2829 dbg(" DescDate: %d/%d/%d",
2830 edge_serial->manuf_descriptor.DescDate[0],
2831 edge_serial->manuf_descriptor.DescDate[1],
2832 edge_serial->manuf_descriptor.DescDate[2]+1900);
2833 unicode_to_ascii(string, sizeof(string),
2834 edge_serial->manuf_descriptor.SerialNumber,
2835 edge_serial->manuf_descriptor.SerNumLength/2);
2836 dbg(" SerialNumber: %s", string);
2837 unicode_to_ascii(string, sizeof(string),
2838 edge_serial->manuf_descriptor.AssemblyNumber,
2839 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2840 dbg(" AssemblyNumber: %s", string);
2841 unicode_to_ascii(string, sizeof(string),
2842 edge_serial->manuf_descriptor.OemAssyNumber,
2843 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2844 dbg(" OemAssyNumber: %s", string);
2845 dbg(" UartType: %d",
2846 edge_serial->manuf_descriptor.UartType);
2848 edge_serial->manuf_descriptor.IonPid);
2849 dbg(" IonConfig: %d",
2850 edge_serial->manuf_descriptor.IonConfig);
2855 /****************************************************************************
2857 * reads in the bootloader descriptor and stores it into the serial
2859 ****************************************************************************/
2860 static void get_boot_desc(struct edgeport_serial *edge_serial)
2864 dbg("getting boot descriptor");
2866 response = rom_read(edge_serial->serial,
2867 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2868 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2870 (__u8 *)(&edge_serial->boot_descriptor));
2873 dev_err(&edge_serial->serial->dev->dev,
2874 "error in getting boot descriptor\n");
2876 dbg("**Boot Descriptor:");
2877 dbg(" BootCodeLength: %d",
2878 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2879 dbg(" MajorVersion: %d",
2880 edge_serial->boot_descriptor.MajorVersion);
2881 dbg(" MinorVersion: %d",
2882 edge_serial->boot_descriptor.MinorVersion);
2883 dbg(" BuildNumber: %d",
2884 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2885 dbg(" Capabilities: 0x%x",
2886 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2887 dbg(" UConfig0: %d",
2888 edge_serial->boot_descriptor.UConfig0);
2889 dbg(" UConfig1: %d",
2890 edge_serial->boot_descriptor.UConfig1);
2895 /****************************************************************************
2896 * load_application_firmware
2897 * This is called to load the application firmware to the device
2898 ****************************************************************************/
2899 static void load_application_firmware(struct edgeport_serial *edge_serial)
2901 const struct ihex_binrec *rec;
2902 const struct firmware *fw;
2903 const char *fw_name;
2904 const char *fw_info;
2909 switch (edge_serial->product_info.iDownloadFile) {
2910 case EDGE_DOWNLOAD_FILE_I930:
2911 fw_info = "downloading firmware version (930)";
2912 fw_name = "edgeport/down.fw";
2915 case EDGE_DOWNLOAD_FILE_80251:
2916 fw_info = "downloading firmware version (80251)";
2917 fw_name = "edgeport/down2.fw";
2920 case EDGE_DOWNLOAD_FILE_NONE:
2921 dbg ("No download file specified, skipping download\n");
2928 response = request_ihex_firmware(&fw, fw_name,
2929 &edge_serial->serial->dev->dev);
2931 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
2936 rec = (const struct ihex_binrec *)fw->data;
2937 build = (rec->data[2] << 8) | rec->data[3];
2939 dbg("%s %d.%d.%d", fw_info, rec->data[0], rec->data[1], build);
2941 edge_serial->product_info.FirmwareMajorVersion = fw->data[0];
2942 edge_serial->product_info.FirmwareMinorVersion = fw->data[1];
2943 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2945 for (rec = ihex_next_binrec(rec); rec;
2946 rec = ihex_next_binrec(rec)) {
2947 Operaddr = be32_to_cpu(rec->addr);
2948 response = sram_write(edge_serial->serial,
2951 be16_to_cpu(rec->len),
2954 dev_err(&edge_serial->serial->dev->dev,
2955 "sram_write failed (%x, %x, %d)\n",
2956 Operaddr >> 16, Operaddr & 0xFFFF,
2957 be16_to_cpu(rec->len));
2962 dbg("sending exec_dl_code");
2963 response = usb_control_msg (edge_serial->serial->dev,
2964 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2965 USB_REQUEST_ION_EXEC_DL_CODE,
2966 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2968 release_firmware(fw);
2973 /****************************************************************************
2975 ****************************************************************************/
2976 static int edge_startup(struct usb_serial *serial)
2978 struct edgeport_serial *edge_serial;
2979 struct edgeport_port *edge_port;
2980 struct usb_device *dev;
2983 bool interrupt_in_found;
2985 bool bulk_out_found;
2986 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2987 EDGE_COMPATIBILITY_MASK1,
2988 EDGE_COMPATIBILITY_MASK2 };
2992 /* create our private serial structure */
2993 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2994 if (edge_serial == NULL) {
2995 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2998 spin_lock_init(&edge_serial->es_lock);
2999 edge_serial->serial = serial;
3000 usb_set_serial_data(serial, edge_serial);
3002 /* get the name for the device from the device */
3003 i = get_string(dev, dev->descriptor.iManufacturer,
3004 &edge_serial->name[0], MAX_NAME_LEN+1);
3005 edge_serial->name[i++] = ' ';
3006 get_string(dev, dev->descriptor.iProduct,
3007 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
3009 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
3011 /* Read the epic descriptor */
3012 if (get_epic_descriptor(edge_serial) <= 0) {
3013 /* memcpy descriptor to Supports structures */
3014 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
3015 sizeof(struct edge_compatibility_bits));
3017 /* get the manufacturing descriptor for this device */
3018 get_manufacturing_desc(edge_serial);
3020 /* get the boot descriptor */
3021 get_boot_desc(edge_serial);
3023 get_product_info(edge_serial);
3026 /* set the number of ports from the manufacturing description */
3027 /* serial->num_ports = serial->product_info.NumPorts; */
3028 if ((!edge_serial->is_epic) &&
3029 (edge_serial->product_info.NumPorts != serial->num_ports)) {
3030 dev_warn(&serial->dev->dev, "Device Reported %d serial ports "
3031 "vs. core thinking we have %d ports, email "
3032 "greg@kroah.com this information.\n",
3033 edge_serial->product_info.NumPorts,
3037 dbg("%s - time 1 %ld", __func__, jiffies);
3039 /* If not an EPiC device */
3040 if (!edge_serial->is_epic) {
3041 /* now load the application firmware into this device */
3042 load_application_firmware(edge_serial);
3044 dbg("%s - time 2 %ld", __func__, jiffies);
3046 /* Check current Edgeport EEPROM and update if necessary */
3047 update_edgeport_E2PROM(edge_serial);
3049 dbg("%s - time 3 %ld", __func__, jiffies);
3051 /* set the configuration to use #1 */
3052 /* dbg("set_configuration 1"); */
3053 /* usb_set_configuration (dev, 1); */
3055 dbg(" FirmwareMajorVersion %d.%d.%d",
3056 edge_serial->product_info.FirmwareMajorVersion,
3057 edge_serial->product_info.FirmwareMinorVersion,
3058 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
3060 /* we set up the pointers to the endpoints in the edge_open function,
3061 * as the structures aren't created yet. */
3063 /* set up our port private structures */
3064 for (i = 0; i < serial->num_ports; ++i) {
3065 edge_port = kmalloc(sizeof(struct edgeport_port), GFP_KERNEL);
3066 if (edge_port == NULL) {
3067 dev_err(&serial->dev->dev, "%s - Out of memory\n",
3069 for (j = 0; j < i; ++j) {
3070 kfree(usb_get_serial_port_data(serial->port[j]));
3071 usb_set_serial_port_data(serial->port[j],
3074 usb_set_serial_data(serial, NULL);
3078 memset(edge_port, 0, sizeof(struct edgeport_port));
3079 spin_lock_init(&edge_port->ep_lock);
3080 edge_port->port = serial->port[i];
3081 usb_set_serial_port_data(serial->port[i], edge_port);
3086 if (edge_serial->is_epic) {
3087 /* EPIC thing, set up our interrupt polling now and our read
3088 * urb, so that the device knows it really is connected. */
3089 interrupt_in_found = bulk_in_found = bulk_out_found = false;
3090 for (i = 0; i < serial->interface->altsetting[0]
3091 .desc.bNumEndpoints; ++i) {
3092 struct usb_endpoint_descriptor *endpoint;
3095 endpoint = &serial->interface->altsetting[0].
3097 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
3098 if (!interrupt_in_found &&
3099 (usb_endpoint_is_int_in(endpoint))) {
3100 /* we found a interrupt in endpoint */
3101 dbg("found interrupt in");
3103 /* not set up yet, so do it now */
3104 edge_serial->interrupt_read_urb =
3105 usb_alloc_urb(0, GFP_KERNEL);
3106 if (!edge_serial->interrupt_read_urb) {
3107 dev_err(&dev->dev, "out of memory\n");
3110 edge_serial->interrupt_in_buffer =
3111 kmalloc(buffer_size, GFP_KERNEL);
3112 if (!edge_serial->interrupt_in_buffer) {
3113 dev_err(&dev->dev, "out of memory\n");
3114 usb_free_urb(edge_serial->interrupt_read_urb);
3117 edge_serial->interrupt_in_endpoint =
3118 endpoint->bEndpointAddress;
3120 /* set up our interrupt urb */
3122 edge_serial->interrupt_read_urb,
3125 endpoint->bEndpointAddress),
3126 edge_serial->interrupt_in_buffer,
3128 edge_interrupt_callback,
3130 endpoint->bInterval);
3132 interrupt_in_found = true;
3135 if (!bulk_in_found &&
3136 (usb_endpoint_is_bulk_in(endpoint))) {
3137 /* we found a bulk in endpoint */
3138 dbg("found bulk in");
3140 /* not set up yet, so do it now */
3141 edge_serial->read_urb =
3142 usb_alloc_urb(0, GFP_KERNEL);
3143 if (!edge_serial->read_urb) {
3144 dev_err(&dev->dev, "out of memory\n");
3147 edge_serial->bulk_in_buffer =
3148 kmalloc(buffer_size, GFP_KERNEL);
3149 if (!edge_serial->bulk_in_buffer) {
3150 dev_err(&dev->dev, "out of memory\n");
3151 usb_free_urb(edge_serial->read_urb);
3154 edge_serial->bulk_in_endpoint =
3155 endpoint->bEndpointAddress;
3157 /* set up our bulk in urb */
3158 usb_fill_bulk_urb(edge_serial->read_urb, dev,
3159 usb_rcvbulkpipe(dev,
3160 endpoint->bEndpointAddress),
3161 edge_serial->bulk_in_buffer,
3162 le16_to_cpu(endpoint->wMaxPacketSize),
3163 edge_bulk_in_callback,
3165 bulk_in_found = true;
3168 if (!bulk_out_found &&
3169 (usb_endpoint_is_bulk_out(endpoint))) {
3170 /* we found a bulk out endpoint */
3171 dbg("found bulk out");
3172 edge_serial->bulk_out_endpoint =
3173 endpoint->bEndpointAddress;
3174 bulk_out_found = true;
3178 if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
3179 dev_err(&dev->dev, "Error - the proper endpoints "
3180 "were not found!\n");
3184 /* start interrupt read for this edgeport this interrupt will
3185 * continue as long as the edgeport is connected */
3186 response = usb_submit_urb(edge_serial->interrupt_read_urb,
3190 "%s - Error %d submitting control urb\n",
3191 __func__, response);
3197 /****************************************************************************
3199 * This function is called whenever the device is removed from the usb bus.
3200 ****************************************************************************/
3201 static void edge_shutdown(struct usb_serial *serial)
3203 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3206 dbg("%s", __func__);
3208 /* stop reads and writes on all ports */
3209 for (i = 0; i < serial->num_ports; ++i) {
3210 kfree(usb_get_serial_port_data(serial->port[i]));
3211 usb_set_serial_port_data(serial->port[i], NULL);
3213 /* free up our endpoint stuff */
3214 if (edge_serial->is_epic) {
3215 usb_kill_urb(edge_serial->interrupt_read_urb);
3216 usb_free_urb(edge_serial->interrupt_read_urb);
3217 kfree(edge_serial->interrupt_in_buffer);
3219 usb_kill_urb(edge_serial->read_urb);
3220 usb_free_urb(edge_serial->read_urb);
3221 kfree(edge_serial->bulk_in_buffer);
3225 usb_set_serial_data(serial, NULL);
3229 /****************************************************************************
3231 * This is called by the module subsystem, or on startup to initialize us
3232 ****************************************************************************/
3233 static int __init edgeport_init(void)
3237 retval = usb_serial_register(&edgeport_2port_device);
3239 goto failed_2port_device_register;
3240 retval = usb_serial_register(&edgeport_4port_device);
3242 goto failed_4port_device_register;
3243 retval = usb_serial_register(&edgeport_8port_device);
3245 goto failed_8port_device_register;
3246 retval = usb_serial_register(&epic_device);
3248 goto failed_epic_device_register;
3249 retval = usb_register(&io_driver);
3251 goto failed_usb_register;
3252 atomic_set(&CmdUrbs, 0);
3253 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
3257 failed_usb_register:
3258 usb_serial_deregister(&epic_device);
3259 failed_epic_device_register:
3260 usb_serial_deregister(&edgeport_8port_device);
3261 failed_8port_device_register:
3262 usb_serial_deregister(&edgeport_4port_device);
3263 failed_4port_device_register:
3264 usb_serial_deregister(&edgeport_2port_device);
3265 failed_2port_device_register:
3270 /****************************************************************************
3272 * Called when the driver is about to be unloaded.
3273 ****************************************************************************/
3274 static void __exit edgeport_exit (void)
3276 usb_deregister(&io_driver);
3277 usb_serial_deregister(&edgeport_2port_device);
3278 usb_serial_deregister(&edgeport_4port_device);
3279 usb_serial_deregister(&edgeport_8port_device);
3280 usb_serial_deregister(&epic_device);
3283 module_init(edgeport_init);
3284 module_exit(edgeport_exit);
3286 /* Module information */
3287 MODULE_AUTHOR(DRIVER_AUTHOR);
3288 MODULE_DESCRIPTION(DRIVER_DESC);
3289 MODULE_LICENSE("GPL");
3290 MODULE_FIRMWARE("edgeport/boot.fw");
3291 MODULE_FIRMWARE("edgeport/boot2.fw");
3292 MODULE_FIRMWARE("edgeport/down.fw");
3293 MODULE_FIRMWARE("edgeport/down2.fw");
3295 module_param(debug, bool, S_IRUGO | S_IWUSR);
3296 MODULE_PARM_DESC(debug, "Debug enabled or not");