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 /* Number of outstanding Command Write Urbs */
197 static atomic_t CmdUrbs = ATOMIC_INIT(0);
200 /* local function prototypes */
202 /* function prototypes for all URB callbacks */
203 static void edge_interrupt_callback(struct urb *urb);
204 static void edge_bulk_in_callback(struct urb *urb);
205 static void edge_bulk_out_data_callback(struct urb *urb);
206 static void edge_bulk_out_cmd_callback(struct urb *urb);
208 /* function prototypes for the usbserial callbacks */
209 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
210 static void edge_close(struct usb_serial_port *port);
211 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
212 const unsigned char *buf, int count);
213 static int edge_write_room(struct tty_struct *tty);
214 static int edge_chars_in_buffer(struct tty_struct *tty);
215 static void edge_throttle(struct tty_struct *tty);
216 static void edge_unthrottle(struct tty_struct *tty);
217 static void edge_set_termios(struct tty_struct *tty,
218 struct usb_serial_port *port,
219 struct ktermios *old_termios);
220 static int edge_ioctl(struct tty_struct *tty,
221 unsigned int cmd, unsigned long arg);
222 static void edge_break(struct tty_struct *tty, int break_state);
223 static int edge_tiocmget(struct tty_struct *tty);
224 static int edge_tiocmset(struct tty_struct *tty,
225 unsigned int set, unsigned int clear);
226 static int edge_get_icount(struct tty_struct *tty,
227 struct serial_icounter_struct *icount);
228 static int edge_startup(struct usb_serial *serial);
229 static void edge_disconnect(struct usb_serial *serial);
230 static void edge_release(struct usb_serial *serial);
232 #include "io_tables.h" /* all of the devices that this driver supports */
234 /* function prototypes for all of our local functions */
236 static void process_rcvd_data(struct edgeport_serial *edge_serial,
237 unsigned char *buffer, __u16 bufferLength);
238 static void process_rcvd_status(struct edgeport_serial *edge_serial,
239 __u8 byte2, __u8 byte3);
240 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
241 unsigned char *data, int length);
242 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
243 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
244 __u8 lsr, __u8 data);
245 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
247 static int calc_baud_rate_divisor(int baud_rate, int *divisor);
248 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
250 static void change_port_settings(struct tty_struct *tty,
251 struct edgeport_port *edge_port,
252 struct ktermios *old_termios);
253 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
254 __u8 regNum, __u8 regValue);
255 static int write_cmd_usb(struct edgeport_port *edge_port,
256 unsigned char *buffer, int writeLength);
257 static void send_more_port_data(struct edgeport_serial *edge_serial,
258 struct edgeport_port *edge_port);
260 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
261 __u16 length, const __u8 *data);
262 static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
263 __u16 length, __u8 *data);
264 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
265 __u16 length, const __u8 *data);
266 static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
267 static void get_boot_desc(struct edgeport_serial *edge_serial);
268 static void load_application_firmware(struct edgeport_serial *edge_serial);
270 static void unicode_to_ascii(char *string, int buflen,
271 __le16 *unicode, int unicode_size);
274 /* ************************************************************************ */
275 /* ************************************************************************ */
276 /* ************************************************************************ */
277 /* ************************************************************************ */
279 /************************************************************************
281 * update_edgeport_E2PROM() Compare current versions of *
282 * Boot ROM and Manufacture *
283 * Descriptors with versions *
284 * embedded in this driver *
286 ************************************************************************/
287 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
291 __u8 BootMajorVersion;
292 __u8 BootMinorVersion;
293 __u16 BootBuildNumber;
295 const struct ihex_binrec *rec;
296 const struct firmware *fw;
300 switch (edge_serial->product_info.iDownloadFile) {
301 case EDGE_DOWNLOAD_FILE_I930:
302 fw_name = "edgeport/boot.fw";
304 case EDGE_DOWNLOAD_FILE_80251:
305 fw_name = "edgeport/boot2.fw";
311 response = request_ihex_firmware(&fw, fw_name,
312 &edge_serial->serial->dev->dev);
314 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
319 rec = (const struct ihex_binrec *)fw->data;
320 BootMajorVersion = rec->data[0];
321 BootMinorVersion = rec->data[1];
322 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
324 /* Check Boot Image Version */
325 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
326 (edge_serial->boot_descriptor.MinorVersion << 16) +
327 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
329 BootNewVer = (BootMajorVersion << 24) +
330 (BootMinorVersion << 16) +
333 dbg("Current Boot Image version %d.%d.%d",
334 edge_serial->boot_descriptor.MajorVersion,
335 edge_serial->boot_descriptor.MinorVersion,
336 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
339 if (BootNewVer > BootCurVer) {
340 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
341 edge_serial->boot_descriptor.MajorVersion,
342 edge_serial->boot_descriptor.MinorVersion,
343 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
344 BootMajorVersion, BootMinorVersion, BootBuildNumber);
346 dbg("Downloading new Boot Image");
348 for (rec = ihex_next_binrec(rec); rec;
349 rec = ihex_next_binrec(rec)) {
350 Bootaddr = be32_to_cpu(rec->addr);
351 response = rom_write(edge_serial->serial,
354 be16_to_cpu(rec->len),
357 dev_err(&edge_serial->serial->dev->dev,
358 "rom_write failed (%x, %x, %d)\n",
359 Bootaddr >> 16, Bootaddr & 0xFFFF,
360 be16_to_cpu(rec->len));
365 dbg("Boot Image -- already up to date");
367 release_firmware(fw);
371 /************************************************************************
373 * Get string descriptor from device
375 ************************************************************************/
376 static int get_string_desc(struct usb_device *dev, int Id,
377 struct usb_string_descriptor **pRetDesc)
379 struct usb_string_descriptor StringDesc;
380 struct usb_string_descriptor *pStringDesc;
382 dbg("%s - USB String ID = %d", __func__, Id);
384 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
388 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
392 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
393 StringDesc.bLength)) {
398 *pRetDesc = pStringDesc;
403 static void dump_product_info(struct edgeport_product_info *product_info)
405 /* Dump Product Info structure */
406 dbg("**Product Information:");
407 dbg(" ProductId %x", product_info->ProductId);
408 dbg(" NumPorts %d", product_info->NumPorts);
409 dbg(" ProdInfoVer %d", product_info->ProdInfoVer);
410 dbg(" IsServer %d", product_info->IsServer);
411 dbg(" IsRS232 %d", product_info->IsRS232);
412 dbg(" IsRS422 %d", product_info->IsRS422);
413 dbg(" IsRS485 %d", product_info->IsRS485);
414 dbg(" RomSize %d", product_info->RomSize);
415 dbg(" RamSize %d", product_info->RamSize);
416 dbg(" CpuRev %x", product_info->CpuRev);
417 dbg(" BoardRev %x", product_info->BoardRev);
418 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
419 product_info->BootMinorVersion,
420 le16_to_cpu(product_info->BootBuildNumber));
421 dbg(" FirmwareMajorVersion %d.%d.%d",
422 product_info->FirmwareMajorVersion,
423 product_info->FirmwareMinorVersion,
424 le16_to_cpu(product_info->FirmwareBuildNumber));
425 dbg(" ManufactureDescDate %d/%d/%d",
426 product_info->ManufactureDescDate[0],
427 product_info->ManufactureDescDate[1],
428 product_info->ManufactureDescDate[2]+1900);
429 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
430 dbg(" EpicVer %d", product_info->EpicVer);
433 static void get_product_info(struct edgeport_serial *edge_serial)
435 struct edgeport_product_info *product_info = &edge_serial->product_info;
437 memset(product_info, 0, sizeof(struct edgeport_product_info));
439 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
440 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
441 product_info->ProdInfoVer = 0;
443 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
444 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
445 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
446 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
448 product_info->BootMajorVersion =
449 edge_serial->boot_descriptor.MajorVersion;
450 product_info->BootMinorVersion =
451 edge_serial->boot_descriptor.MinorVersion;
452 product_info->BootBuildNumber =
453 edge_serial->boot_descriptor.BuildNumber;
455 memcpy(product_info->ManufactureDescDate,
456 edge_serial->manuf_descriptor.DescDate,
457 sizeof(edge_serial->manuf_descriptor.DescDate));
459 /* check if this is 2nd generation hardware */
460 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
461 & ION_DEVICE_ID_80251_NETCHIP)
462 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
464 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
466 /* Determine Product type and set appropriate flags */
467 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
468 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
469 case ION_DEVICE_ID_EDGEPORT_4T:
470 case ION_DEVICE_ID_EDGEPORT_4:
471 case ION_DEVICE_ID_EDGEPORT_2:
472 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
473 case ION_DEVICE_ID_EDGEPORT_8:
474 case ION_DEVICE_ID_EDGEPORT_421:
475 case ION_DEVICE_ID_EDGEPORT_21:
476 case ION_DEVICE_ID_EDGEPORT_2_DIN:
477 case ION_DEVICE_ID_EDGEPORT_4_DIN:
478 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
479 product_info->IsRS232 = 1;
482 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
483 product_info->IsRS422 = 1;
484 product_info->IsRS485 = 1;
487 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
488 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
489 product_info->IsRS422 = 1;
493 dump_product_info(product_info);
496 static int get_epic_descriptor(struct edgeport_serial *ep)
499 struct usb_serial *serial = ep->serial;
500 struct edgeport_product_info *product_info = &ep->product_info;
501 struct edge_compatibility_descriptor *epic = &ep->epic_descriptor;
502 struct edge_compatibility_bits *bits;
505 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
506 USB_REQUEST_ION_GET_EPIC_DESC,
508 &ep->epic_descriptor,
509 sizeof(struct edge_compatibility_descriptor),
512 dbg("%s result = %d", __func__, result);
516 memset(product_info, 0, sizeof(struct edgeport_product_info));
518 product_info->NumPorts = epic->NumPorts;
519 product_info->ProdInfoVer = 0;
520 product_info->FirmwareMajorVersion = epic->MajorVersion;
521 product_info->FirmwareMinorVersion = epic->MinorVersion;
522 product_info->FirmwareBuildNumber = epic->BuildNumber;
523 product_info->iDownloadFile = epic->iDownloadFile;
524 product_info->EpicVer = epic->EpicVer;
525 product_info->Epic = epic->Supports;
526 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
527 dump_product_info(product_info);
529 bits = &ep->epic_descriptor.Supports;
530 dbg("**EPIC descriptor:");
531 dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE");
532 dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE");
533 dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE");
534 dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE");
535 dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
536 dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
537 dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE");
538 dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE");
539 dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
540 dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE");
541 dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE");
542 dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
543 dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE");
550 /************************************************************************/
551 /************************************************************************/
552 /* U S B C A L L B A C K F U N C T I O N S */
553 /* U S B C A L L B A C K F U N C T I O N S */
554 /************************************************************************/
555 /************************************************************************/
557 /*****************************************************************************
558 * edge_interrupt_callback
559 * this is the callback function for when we have received data on the
560 * interrupt endpoint.
561 *****************************************************************************/
562 static void edge_interrupt_callback(struct urb *urb)
564 struct edgeport_serial *edge_serial = urb->context;
565 struct edgeport_port *edge_port;
566 struct usb_serial_port *port;
567 struct tty_struct *tty;
568 unsigned char *data = urb->transfer_buffer;
569 int length = urb->actual_length;
575 int status = urb->status;
586 /* this urb is terminated, clean up */
587 dbg("%s - urb shutting down with status: %d",
591 dbg("%s - nonzero urb status received: %d", __func__, status);
595 /* process this interrupt-read even if there are no ports open */
597 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
598 __func__, length, data);
601 bytes_avail = data[0] | (data[1] << 8);
603 spin_lock(&edge_serial->es_lock);
604 edge_serial->rxBytesAvail += bytes_avail;
605 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress);
607 if (edge_serial->rxBytesAvail > 0 &&
608 !edge_serial->read_in_progress) {
609 dbg("%s - posting a read", __func__);
610 edge_serial->read_in_progress = true;
612 /* we have pending bytes on the
613 bulk in pipe, send a request */
614 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
616 dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result);
617 edge_serial->read_in_progress = false;
620 spin_unlock(&edge_serial->es_lock);
623 /* grab the txcredits for the ports if available */
626 while ((position < length) &&
627 (portNumber < edge_serial->serial->num_ports)) {
628 txCredits = data[position] | (data[position+1] << 8);
630 port = edge_serial->serial->port[portNumber];
631 edge_port = usb_get_serial_port_data(port);
632 if (edge_port->open) {
633 spin_lock(&edge_port->ep_lock);
634 edge_port->txCredits += txCredits;
635 spin_unlock(&edge_port->ep_lock);
636 dbg("%s - txcredits for port%d = %d",
637 __func__, portNumber,
638 edge_port->txCredits);
640 /* tell the tty driver that something
642 tty = tty_port_tty_get(
643 &edge_port->port->port);
648 /* Since we have more credit, check
649 if more data can be sent */
650 send_more_port_data(edge_serial,
660 result = usb_submit_urb(urb, GFP_ATOMIC);
662 dev_err(&urb->dev->dev,
663 "%s - Error %d submitting control urb\n",
668 /*****************************************************************************
669 * edge_bulk_in_callback
670 * this is the callback function for when we have received data on the
672 *****************************************************************************/
673 static void edge_bulk_in_callback(struct urb *urb)
675 struct edgeport_serial *edge_serial = urb->context;
676 unsigned char *data = urb->transfer_buffer;
678 __u16 raw_data_length;
679 int status = urb->status;
684 dbg("%s - nonzero read bulk status received: %d",
686 edge_serial->read_in_progress = false;
690 if (urb->actual_length == 0) {
691 dbg("%s - read bulk callback with no data", __func__);
692 edge_serial->read_in_progress = false;
696 raw_data_length = urb->actual_length;
698 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
699 __func__, raw_data_length, data);
701 spin_lock(&edge_serial->es_lock);
703 /* decrement our rxBytes available by the number that we just got */
704 edge_serial->rxBytesAvail -= raw_data_length;
706 dbg("%s - Received = %d, rxBytesAvail %d", __func__,
707 raw_data_length, edge_serial->rxBytesAvail);
709 process_rcvd_data(edge_serial, data, urb->actual_length);
711 /* check to see if there's any more data for us to read */
712 if (edge_serial->rxBytesAvail > 0) {
713 dbg("%s - posting a read", __func__);
714 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
716 dev_err(&urb->dev->dev,
717 "%s - usb_submit_urb(read bulk) failed, "
718 "retval = %d\n", __func__, retval);
719 edge_serial->read_in_progress = false;
722 edge_serial->read_in_progress = false;
725 spin_unlock(&edge_serial->es_lock);
729 /*****************************************************************************
730 * edge_bulk_out_data_callback
731 * this is the callback function for when we have finished sending
732 * serial data on the bulk out endpoint.
733 *****************************************************************************/
734 static void edge_bulk_out_data_callback(struct urb *urb)
736 struct edgeport_port *edge_port = urb->context;
737 struct tty_struct *tty;
738 int status = urb->status;
743 dbg("%s - nonzero write bulk status received: %d",
747 tty = tty_port_tty_get(&edge_port->port->port);
749 if (tty && edge_port->open) {
750 /* let the tty driver wakeup if it has a special
751 write_wakeup function */
756 /* Release the Write URB */
757 edge_port->write_in_progress = false;
759 /* Check if more data needs to be sent */
760 send_more_port_data((struct edgeport_serial *)
761 (usb_get_serial_data(edge_port->port->serial)), edge_port);
765 /*****************************************************************************
767 * this is the callback function for when we have finished sending a
768 * command on the bulk out endpoint.
769 *****************************************************************************/
770 static void edge_bulk_out_cmd_callback(struct urb *urb)
772 struct edgeport_port *edge_port = urb->context;
773 struct tty_struct *tty;
774 int status = urb->status;
778 atomic_dec(&CmdUrbs);
779 dbg("%s - FREE URB %p (outstanding %d)", __func__,
780 urb, atomic_read(&CmdUrbs));
783 /* clean up the transfer buffer */
784 kfree(urb->transfer_buffer);
786 /* Free the command urb */
790 dbg("%s - nonzero write bulk status received: %d",
795 /* Get pointer to tty */
796 tty = tty_port_tty_get(&edge_port->port->port);
798 /* tell the tty driver that something has changed */
799 if (tty && edge_port->open)
803 /* we have completed the command */
804 edge_port->commandPending = false;
805 wake_up(&edge_port->wait_command);
809 /*****************************************************************************
810 * Driver tty interface functions
811 *****************************************************************************/
813 /*****************************************************************************
815 * this function is called by the tty driver when a port is opened
816 * If successful, we return 0
817 * Otherwise we return a negative error number.
818 *****************************************************************************/
819 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
821 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
822 struct usb_serial *serial;
823 struct edgeport_serial *edge_serial;
826 dbg("%s - port %d", __func__, port->number);
828 if (edge_port == NULL)
831 /* see if we've set up our endpoint info yet (can't set it up
832 in edge_startup as the structures were not set up at that time.) */
833 serial = port->serial;
834 edge_serial = usb_get_serial_data(serial);
835 if (edge_serial == NULL)
837 if (edge_serial->interrupt_in_buffer == NULL) {
838 struct usb_serial_port *port0 = serial->port[0];
840 /* not set up yet, so do it now */
841 edge_serial->interrupt_in_buffer =
842 port0->interrupt_in_buffer;
843 edge_serial->interrupt_in_endpoint =
844 port0->interrupt_in_endpointAddress;
845 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
846 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
847 edge_serial->bulk_in_endpoint =
848 port0->bulk_in_endpointAddress;
849 edge_serial->read_urb = port0->read_urb;
850 edge_serial->bulk_out_endpoint =
851 port0->bulk_out_endpointAddress;
853 /* set up our interrupt urb */
854 usb_fill_int_urb(edge_serial->interrupt_read_urb,
856 usb_rcvintpipe(serial->dev,
857 port0->interrupt_in_endpointAddress),
858 port0->interrupt_in_buffer,
859 edge_serial->interrupt_read_urb->transfer_buffer_length,
860 edge_interrupt_callback, edge_serial,
861 edge_serial->interrupt_read_urb->interval);
863 /* set up our bulk in urb */
864 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
865 usb_rcvbulkpipe(serial->dev,
866 port0->bulk_in_endpointAddress),
867 port0->bulk_in_buffer,
868 edge_serial->read_urb->transfer_buffer_length,
869 edge_bulk_in_callback, edge_serial);
870 edge_serial->read_in_progress = false;
872 /* start interrupt read for this edgeport
873 * this interrupt will continue as long
874 * as the edgeport is connected */
875 response = usb_submit_urb(edge_serial->interrupt_read_urb,
879 "%s - Error %d submitting control urb\n",
884 /* initialize our wait queues */
885 init_waitqueue_head(&edge_port->wait_open);
886 init_waitqueue_head(&edge_port->wait_chase);
887 init_waitqueue_head(&edge_port->delta_msr_wait);
888 init_waitqueue_head(&edge_port->wait_command);
890 /* initialize our icount structure */
891 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
893 /* initialize our port settings */
894 edge_port->txCredits = 0; /* Can't send any data yet */
895 /* Must always set this bit to enable ints! */
896 edge_port->shadowMCR = MCR_MASTER_IE;
897 edge_port->chaseResponsePending = false;
899 /* send a open port command */
900 edge_port->openPending = true;
901 edge_port->open = false;
902 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
905 dev_err(&port->dev, "%s - error sending open port command\n",
907 edge_port->openPending = false;
911 /* now wait for the port to be completely opened */
912 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
915 if (!edge_port->open) {
917 dbg("%s - open timedout", __func__);
918 edge_port->openPending = false;
922 /* create the txfifo */
923 edge_port->txfifo.head = 0;
924 edge_port->txfifo.tail = 0;
925 edge_port->txfifo.count = 0;
926 edge_port->txfifo.size = edge_port->maxTxCredits;
927 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
929 if (!edge_port->txfifo.fifo) {
930 dbg("%s - no memory", __func__);
935 /* Allocate a URB for the write */
936 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
937 edge_port->write_in_progress = false;
939 if (!edge_port->write_urb) {
940 dbg("%s - no memory", __func__);
945 dbg("%s(%d) - Initialize TX fifo to %d bytes",
946 __func__, port->number, edge_port->maxTxCredits);
948 dbg("%s exited", __func__);
954 /************************************************************************
956 * block_until_chase_response
958 * This function will block the close until one of the following:
959 * 1. Response to our Chase comes from Edgeport
960 * 2. A timeout of 10 seconds without activity has expired
961 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
963 ************************************************************************/
964 static void block_until_chase_response(struct edgeport_port *edge_port)
972 /* Save Last credits */
973 lastCredits = edge_port->txCredits;
975 /* Did we get our Chase response */
976 if (!edge_port->chaseResponsePending) {
977 dbg("%s - Got Chase Response", __func__);
979 /* did we get all of our credit back? */
980 if (edge_port->txCredits == edge_port->maxTxCredits) {
981 dbg("%s - Got all credits", __func__);
986 /* Block the thread for a while */
987 prepare_to_wait(&edge_port->wait_chase, &wait,
988 TASK_UNINTERRUPTIBLE);
989 schedule_timeout(timeout);
990 finish_wait(&edge_port->wait_chase, &wait);
992 if (lastCredits == edge_port->txCredits) {
993 /* No activity.. count down. */
996 edge_port->chaseResponsePending = false;
997 dbg("%s - Chase TIMEOUT", __func__);
1001 /* Reset timeout value back to 10 seconds */
1002 dbg("%s - Last %d, Current %d", __func__,
1003 lastCredits, edge_port->txCredits);
1010 /************************************************************************
1012 * block_until_tx_empty
1014 * This function will block the close until one of the following:
1016 * 2. The edgeport has stopped
1017 * 3. A timeout of 3 seconds without activity has expired
1019 ************************************************************************/
1020 static void block_until_tx_empty(struct edgeport_port *edge_port)
1023 struct TxFifo *fifo = &edge_port->txfifo;
1025 int timeout = HZ/10;
1029 /* Save Last count */
1030 lastCount = fifo->count;
1032 /* Is the Edgeport Buffer empty? */
1033 if (lastCount == 0) {
1034 dbg("%s - TX Buffer Empty", __func__);
1038 /* Block the thread for a while */
1039 prepare_to_wait(&edge_port->wait_chase, &wait,
1040 TASK_UNINTERRUPTIBLE);
1041 schedule_timeout(timeout);
1042 finish_wait(&edge_port->wait_chase, &wait);
1044 dbg("%s wait", __func__);
1046 if (lastCount == fifo->count) {
1047 /* No activity.. count down. */
1050 dbg("%s - TIMEOUT", __func__);
1054 /* Reset timeout value back to seconds */
1061 /*****************************************************************************
1063 * this function is called by the tty driver when a port is closed
1064 *****************************************************************************/
1065 static void edge_close(struct usb_serial_port *port)
1067 struct edgeport_serial *edge_serial;
1068 struct edgeport_port *edge_port;
1071 dbg("%s - port %d", __func__, port->number);
1073 edge_serial = usb_get_serial_data(port->serial);
1074 edge_port = usb_get_serial_port_data(port);
1075 if (edge_serial == NULL || edge_port == NULL)
1078 /* block until tx is empty */
1079 block_until_tx_empty(edge_port);
1081 edge_port->closePending = true;
1083 if ((!edge_serial->is_epic) ||
1084 ((edge_serial->is_epic) &&
1085 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1086 /* flush and chase */
1087 edge_port->chaseResponsePending = true;
1089 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__);
1090 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1092 /* block until chase finished */
1093 block_until_chase_response(edge_port);
1095 edge_port->chaseResponsePending = false;
1098 if ((!edge_serial->is_epic) ||
1099 ((edge_serial->is_epic) &&
1100 (edge_serial->epic_descriptor.Supports.IOSPClose))) {
1101 /* close the port */
1102 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__);
1103 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1106 /* port->close = true; */
1107 edge_port->closePending = false;
1108 edge_port->open = false;
1109 edge_port->openPending = false;
1111 usb_kill_urb(edge_port->write_urb);
1113 if (edge_port->write_urb) {
1114 /* if this urb had a transfer buffer already
1115 (old transfer) free it */
1116 kfree(edge_port->write_urb->transfer_buffer);
1117 usb_free_urb(edge_port->write_urb);
1118 edge_port->write_urb = NULL;
1120 kfree(edge_port->txfifo.fifo);
1121 edge_port->txfifo.fifo = NULL;
1123 dbg("%s exited", __func__);
1126 /*****************************************************************************
1128 * this function is called by the tty driver when data should be written
1130 * If successful, we return the number of bytes written, otherwise we
1131 * return a negative error number.
1132 *****************************************************************************/
1133 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1134 const unsigned char *data, int count)
1136 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1137 struct TxFifo *fifo;
1142 unsigned long flags;
1144 dbg("%s - port %d", __func__, port->number);
1146 if (edge_port == NULL)
1149 /* get a pointer to the Tx fifo */
1150 fifo = &edge_port->txfifo;
1152 spin_lock_irqsave(&edge_port->ep_lock, flags);
1154 /* calculate number of bytes to put in fifo */
1155 copySize = min((unsigned int)count,
1156 (edge_port->txCredits - fifo->count));
1158 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes",
1159 __func__, port->number, count,
1160 edge_port->txCredits - fifo->count, copySize);
1162 /* catch writes of 0 bytes which the tty driver likes to give us,
1163 and when txCredits is empty */
1164 if (copySize == 0) {
1165 dbg("%s - copySize = Zero", __func__);
1170 * since we can never overflow the buffer we do not have to check for a
1173 * the copy is done is two parts -- first fill to the end of the buffer
1174 * then copy the reset from the start of the buffer
1176 bytesleft = fifo->size - fifo->head;
1177 firsthalf = min(bytesleft, copySize);
1178 dbg("%s - copy %d bytes of %d into fifo ", __func__,
1179 firsthalf, bytesleft);
1181 /* now copy our data */
1182 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1183 usb_serial_debug_data(debug, &port->dev, __func__,
1184 firsthalf, &fifo->fifo[fifo->head]);
1186 /* update the index and size */
1187 fifo->head += firsthalf;
1188 fifo->count += firsthalf;
1190 /* wrap the index */
1191 if (fifo->head == fifo->size)
1194 secondhalf = copySize-firsthalf;
1197 dbg("%s - copy rest of data %d", __func__, secondhalf);
1198 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1199 usb_serial_debug_data(debug, &port->dev, __func__,
1200 secondhalf, &fifo->fifo[fifo->head]);
1201 /* update the index and size */
1202 fifo->count += secondhalf;
1203 fifo->head += secondhalf;
1204 /* No need to check for wrap since we can not get to end of
1205 * the fifo in this part
1210 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1212 send_more_port_data((struct edgeport_serial *)
1213 usb_get_serial_data(port->serial), edge_port);
1215 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__,
1216 copySize, edge_port->txCredits, fifo->count);
1222 /************************************************************************
1224 * send_more_port_data()
1226 * This routine attempts to write additional UART transmit data
1227 * to a port over the USB bulk pipe. It is called (1) when new
1228 * data has been written to a port's TxBuffer from higher layers
1229 * (2) when the peripheral sends us additional TxCredits indicating
1230 * that it can accept more Tx data for a given port; and (3) when
1231 * a bulk write completes successfully and we want to see if we
1232 * can transmit more.
1234 ************************************************************************/
1235 static void send_more_port_data(struct edgeport_serial *edge_serial,
1236 struct edgeport_port *edge_port)
1238 struct TxFifo *fifo = &edge_port->txfifo;
1240 unsigned char *buffer;
1246 unsigned long flags;
1248 dbg("%s(%d)", __func__, edge_port->port->number);
1250 spin_lock_irqsave(&edge_port->ep_lock, flags);
1252 if (edge_port->write_in_progress ||
1254 (fifo->count == 0)) {
1255 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d",
1256 __func__, edge_port->port->number,
1257 fifo->count, edge_port->write_in_progress);
1261 /* since the amount of data in the fifo will always fit into the
1262 * edgeport buffer we do not need to check the write length
1264 * Do we have enough credits for this port to make it worthwhile
1265 * to bother queueing a write. If it's too small, say a few bytes,
1266 * it's better to wait for more credits so we can do a larger write.
1268 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1269 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d",
1270 __func__, edge_port->port->number, fifo->count,
1271 edge_port->txCredits);
1275 /* lock this write */
1276 edge_port->write_in_progress = true;
1278 /* get a pointer to the write_urb */
1279 urb = edge_port->write_urb;
1281 /* make sure transfer buffer is freed */
1282 kfree(urb->transfer_buffer);
1283 urb->transfer_buffer = NULL;
1285 /* build the data header for the buffer and port that we are about
1287 count = fifo->count;
1288 buffer = kmalloc(count+2, GFP_ATOMIC);
1289 if (buffer == NULL) {
1290 dev_err_console(edge_port->port,
1291 "%s - no more kernel memory...\n", __func__);
1292 edge_port->write_in_progress = false;
1295 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number
1296 - edge_port->port->serial->minor, count);
1297 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number
1298 - edge_port->port->serial->minor, count);
1300 /* now copy our data */
1301 bytesleft = fifo->size - fifo->tail;
1302 firsthalf = min(bytesleft, count);
1303 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1304 fifo->tail += firsthalf;
1305 fifo->count -= firsthalf;
1306 if (fifo->tail == fifo->size)
1309 secondhalf = count-firsthalf;
1311 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1313 fifo->tail += secondhalf;
1314 fifo->count -= secondhalf;
1318 usb_serial_debug_data(debug, &edge_port->port->dev,
1319 __func__, count, &buffer[2]);
1321 /* fill up the urb with all of our data and submit it */
1322 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1323 usb_sndbulkpipe(edge_serial->serial->dev,
1324 edge_serial->bulk_out_endpoint),
1326 edge_bulk_out_data_callback, edge_port);
1328 /* decrement the number of credits we have by the number we just sent */
1329 edge_port->txCredits -= count;
1330 edge_port->icount.tx += count;
1332 status = usb_submit_urb(urb, GFP_ATOMIC);
1334 /* something went wrong */
1335 dev_err_console(edge_port->port,
1336 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1338 edge_port->write_in_progress = false;
1340 /* revert the credits as something bad happened. */
1341 edge_port->txCredits += count;
1342 edge_port->icount.tx -= count;
1344 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d",
1345 __func__, count, edge_port->txCredits, fifo->count);
1348 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1352 /*****************************************************************************
1354 * this function is called by the tty driver when it wants to know how
1355 * many bytes of data we can accept for a specific port. If successful,
1356 * we return the amount of room that we have for this port (the txCredits)
1357 * otherwise we return a negative error number.
1358 *****************************************************************************/
1359 static int edge_write_room(struct tty_struct *tty)
1361 struct usb_serial_port *port = tty->driver_data;
1362 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1364 unsigned long flags;
1366 dbg("%s", __func__);
1368 if (edge_port == NULL)
1370 if (edge_port->closePending)
1373 dbg("%s - port %d", __func__, port->number);
1375 if (!edge_port->open) {
1376 dbg("%s - port not opened", __func__);
1380 /* total of both buffers is still txCredit */
1381 spin_lock_irqsave(&edge_port->ep_lock, flags);
1382 room = edge_port->txCredits - edge_port->txfifo.count;
1383 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1385 dbg("%s - returns %d", __func__, room);
1390 /*****************************************************************************
1391 * edge_chars_in_buffer
1392 * this function is called by the tty driver when it wants to know how
1393 * many bytes of data we currently have outstanding in the port (data that
1394 * has been written, but hasn't made it out the port yet)
1395 * If successful, we return the number of bytes left to be written in the
1397 * Otherwise we return a negative error number.
1398 *****************************************************************************/
1399 static int edge_chars_in_buffer(struct tty_struct *tty)
1401 struct usb_serial_port *port = tty->driver_data;
1402 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1404 unsigned long flags;
1406 dbg("%s", __func__);
1408 if (edge_port == NULL)
1410 if (edge_port->closePending)
1413 if (!edge_port->open) {
1414 dbg("%s - port not opened", __func__);
1418 spin_lock_irqsave(&edge_port->ep_lock, flags);
1419 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1420 edge_port->txfifo.count;
1421 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1423 dbg("%s(port %d) - returns %d", __func__,
1424 port->number, num_chars);
1431 /*****************************************************************************
1433 * this function is called by the tty driver when it wants to stop the data
1434 * being read from the port.
1435 *****************************************************************************/
1436 static void edge_throttle(struct tty_struct *tty)
1438 struct usb_serial_port *port = tty->driver_data;
1439 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1442 dbg("%s - port %d", __func__, port->number);
1444 if (edge_port == NULL)
1447 if (!edge_port->open) {
1448 dbg("%s - port not opened", __func__);
1452 /* if we are implementing XON/XOFF, send the stop character */
1454 unsigned char stop_char = STOP_CHAR(tty);
1455 status = edge_write(tty, port, &stop_char, 1);
1460 /* if we are implementing RTS/CTS, toggle that line */
1461 if (tty->termios->c_cflag & CRTSCTS) {
1462 edge_port->shadowMCR &= ~MCR_RTS;
1463 status = send_cmd_write_uart_register(edge_port, MCR,
1464 edge_port->shadowMCR);
1471 /*****************************************************************************
1473 * this function is called by the tty driver when it wants to resume the
1474 * data being read from the port (called after SerialThrottle is called)
1475 *****************************************************************************/
1476 static void edge_unthrottle(struct tty_struct *tty)
1478 struct usb_serial_port *port = tty->driver_data;
1479 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1482 dbg("%s - port %d", __func__, port->number);
1484 if (edge_port == NULL)
1487 if (!edge_port->open) {
1488 dbg("%s - port not opened", __func__);
1492 /* if we are implementing XON/XOFF, send the start character */
1494 unsigned char start_char = START_CHAR(tty);
1495 status = edge_write(tty, port, &start_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 send_cmd_write_uart_register(edge_port, MCR,
1503 edge_port->shadowMCR);
1508 /*****************************************************************************
1510 * this function is called by the tty driver when it wants to change
1511 * the termios structure
1512 *****************************************************************************/
1513 static void edge_set_termios(struct tty_struct *tty,
1514 struct usb_serial_port *port, struct ktermios *old_termios)
1516 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1519 cflag = tty->termios->c_cflag;
1520 dbg("%s - clfag %08x iflag %08x", __func__,
1521 tty->termios->c_cflag, tty->termios->c_iflag);
1522 dbg("%s - old clfag %08x old iflag %08x", __func__,
1523 old_termios->c_cflag, old_termios->c_iflag);
1525 dbg("%s - port %d", __func__, port->number);
1527 if (edge_port == NULL)
1530 if (!edge_port->open) {
1531 dbg("%s - port not opened", __func__);
1535 /* change the port settings to the new ones specified */
1536 change_port_settings(tty, edge_port, old_termios);
1540 /*****************************************************************************
1541 * get_lsr_info - get line status register info
1543 * Purpose: Let user call ioctl() to get info when the UART physically
1544 * is emptied. On bus types like RS485, the transmitter must
1545 * release the bus after transmitting. This must be done when
1546 * the transmit shift register is empty, not be done when the
1547 * transmit holding register is empty. This functionality
1548 * allows an RS485 driver to be written in user space.
1549 *****************************************************************************/
1550 static int get_lsr_info(struct edgeport_port *edge_port,
1551 unsigned int __user *value)
1553 unsigned int result = 0;
1554 unsigned long flags;
1556 spin_lock_irqsave(&edge_port->ep_lock, flags);
1557 if (edge_port->maxTxCredits == edge_port->txCredits &&
1558 edge_port->txfifo.count == 0) {
1559 dbg("%s -- Empty", __func__);
1560 result = TIOCSER_TEMT;
1562 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1564 if (copy_to_user(value, &result, sizeof(int)))
1569 static int edge_tiocmset(struct tty_struct *tty,
1570 unsigned int set, unsigned int clear)
1572 struct usb_serial_port *port = tty->driver_data;
1573 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1576 dbg("%s - port %d", __func__, port->number);
1578 mcr = edge_port->shadowMCR;
1579 if (set & TIOCM_RTS)
1581 if (set & TIOCM_DTR)
1583 if (set & TIOCM_LOOP)
1584 mcr |= MCR_LOOPBACK;
1586 if (clear & TIOCM_RTS)
1588 if (clear & TIOCM_DTR)
1590 if (clear & TIOCM_LOOP)
1591 mcr &= ~MCR_LOOPBACK;
1593 edge_port->shadowMCR = mcr;
1595 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1600 static int edge_tiocmget(struct tty_struct *tty)
1602 struct usb_serial_port *port = tty->driver_data;
1603 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1604 unsigned int result = 0;
1608 dbg("%s - port %d", __func__, port->number);
1610 msr = edge_port->shadowMSR;
1611 mcr = edge_port->shadowMCR;
1612 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1613 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1614 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1615 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1616 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1617 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1620 dbg("%s -- %x", __func__, result);
1625 static int edge_get_icount(struct tty_struct *tty,
1626 struct serial_icounter_struct *icount)
1628 struct usb_serial_port *port = tty->driver_data;
1629 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1630 struct async_icount cnow;
1631 cnow = edge_port->icount;
1633 icount->cts = cnow.cts;
1634 icount->dsr = cnow.dsr;
1635 icount->rng = cnow.rng;
1636 icount->dcd = cnow.dcd;
1637 icount->rx = cnow.rx;
1638 icount->tx = cnow.tx;
1639 icount->frame = cnow.frame;
1640 icount->overrun = cnow.overrun;
1641 icount->parity = cnow.parity;
1642 icount->brk = cnow.brk;
1643 icount->buf_overrun = cnow.buf_overrun;
1645 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d",
1646 __func__, port->number, icount->rx, icount->tx);
1650 static int get_serial_info(struct edgeport_port *edge_port,
1651 struct serial_struct __user *retinfo)
1653 struct serial_struct tmp;
1658 memset(&tmp, 0, sizeof(tmp));
1660 tmp.type = PORT_16550A;
1661 tmp.line = edge_port->port->serial->minor;
1662 tmp.port = edge_port->port->number;
1664 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1665 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1666 tmp.baud_base = 9600;
1667 tmp.close_delay = 5*HZ;
1668 tmp.closing_wait = 30*HZ;
1670 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1676 /*****************************************************************************
1678 * this function handles any ioctl calls to the driver
1679 *****************************************************************************/
1680 static int edge_ioctl(struct tty_struct *tty,
1681 unsigned int cmd, unsigned long arg)
1683 struct usb_serial_port *port = tty->driver_data;
1685 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1686 struct async_icount cnow;
1687 struct async_icount cprev;
1689 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
1693 dbg("%s (%d) TIOCSERGETLSR", __func__, port->number);
1694 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1697 dbg("%s (%d) TIOCGSERIAL", __func__, port->number);
1698 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1701 dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
1702 cprev = edge_port->icount;
1704 prepare_to_wait(&edge_port->delta_msr_wait,
1705 &wait, TASK_INTERRUPTIBLE);
1707 finish_wait(&edge_port->delta_msr_wait, &wait);
1708 /* see if a signal did it */
1709 if (signal_pending(current))
1710 return -ERESTARTSYS;
1711 cnow = edge_port->icount;
1712 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1713 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1714 return -EIO; /* no change => error */
1715 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1716 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1717 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
1718 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
1727 return -ENOIOCTLCMD;
1731 /*****************************************************************************
1733 * this function sends a break to the port
1734 *****************************************************************************/
1735 static void edge_break(struct tty_struct *tty, int break_state)
1737 struct usb_serial_port *port = tty->driver_data;
1738 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1739 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1742 if ((!edge_serial->is_epic) ||
1743 ((edge_serial->is_epic) &&
1744 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1745 /* flush and chase */
1746 edge_port->chaseResponsePending = true;
1748 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__);
1749 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1751 /* block until chase finished */
1752 block_until_chase_response(edge_port);
1754 edge_port->chaseResponsePending = false;
1758 if ((!edge_serial->is_epic) ||
1759 ((edge_serial->is_epic) &&
1760 (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) {
1761 if (break_state == -1) {
1762 dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__);
1763 status = send_iosp_ext_cmd(edge_port,
1764 IOSP_CMD_SET_BREAK, 0);
1766 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__);
1767 status = send_iosp_ext_cmd(edge_port,
1768 IOSP_CMD_CLEAR_BREAK, 0);
1771 dbg("%s - error sending break set/clear command.",
1777 /*****************************************************************************
1779 * this function handles the data received on the bulk in pipe.
1780 *****************************************************************************/
1781 static void process_rcvd_data(struct edgeport_serial *edge_serial,
1782 unsigned char *buffer, __u16 bufferLength)
1784 struct usb_serial_port *port;
1785 struct edgeport_port *edge_port;
1786 struct tty_struct *tty;
1787 __u16 lastBufferLength;
1790 dbg("%s", __func__);
1792 lastBufferLength = bufferLength + 1;
1794 while (bufferLength > 0) {
1795 /* failsafe incase we get a message that we don't understand */
1796 if (lastBufferLength == bufferLength) {
1797 dbg("%s - stuck in loop, exiting it.", __func__);
1800 lastBufferLength = bufferLength;
1802 switch (edge_serial->rxState) {
1804 edge_serial->rxHeader1 = *buffer;
1808 if (bufferLength == 0) {
1809 edge_serial->rxState = EXPECT_HDR2;
1812 /* otherwise, drop on through */
1814 edge_serial->rxHeader2 = *buffer;
1818 dbg("%s - Hdr1=%02X Hdr2=%02X", __func__,
1819 edge_serial->rxHeader1, edge_serial->rxHeader2);
1820 /* Process depending on whether this header is
1823 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1824 /* Decode this status header and go to
1825 * EXPECT_HDR1 (if we can process the status
1826 * with only 2 bytes), or go to EXPECT_HDR3 to
1827 * get the third byte. */
1828 edge_serial->rxPort =
1829 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1830 edge_serial->rxStatusCode =
1831 IOSP_GET_STATUS_CODE(
1832 edge_serial->rxHeader1);
1834 if (!IOSP_STATUS_IS_2BYTE(
1835 edge_serial->rxStatusCode)) {
1836 /* This status needs additional bytes.
1837 * Save what we have and then wait for
1840 edge_serial->rxStatusParam
1841 = edge_serial->rxHeader2;
1842 edge_serial->rxState = EXPECT_HDR3;
1845 /* We have all the header bytes, process the
1847 process_rcvd_status(edge_serial,
1848 edge_serial->rxHeader2, 0);
1849 edge_serial->rxState = EXPECT_HDR1;
1852 edge_serial->rxPort =
1853 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1854 edge_serial->rxBytesRemaining =
1855 IOSP_GET_HDR_DATA_LEN(
1856 edge_serial->rxHeader1,
1857 edge_serial->rxHeader2);
1858 dbg("%s - Data for Port %u Len %u",
1860 edge_serial->rxPort,
1861 edge_serial->rxBytesRemaining);
1863 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1864 * ASSERT(DevExt->RxBytesRemaining <
1865 * IOSP_MAX_DATA_LENGTH);
1868 if (bufferLength == 0) {
1869 edge_serial->rxState = EXPECT_DATA;
1872 /* Else, drop through */
1874 case EXPECT_DATA: /* Expect data */
1875 if (bufferLength < edge_serial->rxBytesRemaining) {
1876 rxLen = bufferLength;
1877 /* Expect data to start next buffer */
1878 edge_serial->rxState = EXPECT_DATA;
1880 /* BufLen >= RxBytesRemaining */
1881 rxLen = edge_serial->rxBytesRemaining;
1882 /* Start another header next time */
1883 edge_serial->rxState = EXPECT_HDR1;
1886 bufferLength -= rxLen;
1887 edge_serial->rxBytesRemaining -= rxLen;
1889 /* spit this data back into the tty driver if this
1892 port = edge_serial->serial->port[
1893 edge_serial->rxPort];
1894 edge_port = usb_get_serial_port_data(port);
1895 if (edge_port->open) {
1896 tty = tty_port_tty_get(
1897 &edge_port->port->port);
1899 dbg("%s - Sending %d bytes to TTY for port %d",
1900 __func__, rxLen, edge_serial->rxPort);
1901 edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
1904 edge_port->icount.rx += rxLen;
1910 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1911 edge_serial->rxHeader3 = *buffer;
1915 /* We have all the header bytes, process the
1917 process_rcvd_status(edge_serial,
1918 edge_serial->rxStatusParam,
1919 edge_serial->rxHeader3);
1920 edge_serial->rxState = EXPECT_HDR1;
1927 /*****************************************************************************
1928 * process_rcvd_status
1929 * this function handles the any status messages received on the
1931 *****************************************************************************/
1932 static void process_rcvd_status(struct edgeport_serial *edge_serial,
1933 __u8 byte2, __u8 byte3)
1935 struct usb_serial_port *port;
1936 struct edgeport_port *edge_port;
1937 struct tty_struct *tty;
1938 __u8 code = edge_serial->rxStatusCode;
1940 /* switch the port pointer to the one being currently talked about */
1941 port = edge_serial->serial->port[edge_serial->rxPort];
1942 edge_port = usb_get_serial_port_data(port);
1943 if (edge_port == NULL) {
1944 dev_err(&edge_serial->serial->dev->dev,
1945 "%s - edge_port == NULL for port %d\n",
1946 __func__, edge_serial->rxPort);
1950 dbg("%s - port %d", __func__, edge_serial->rxPort);
1952 if (code == IOSP_EXT_STATUS) {
1954 case IOSP_EXT_STATUS_CHASE_RSP:
1955 /* we want to do EXT status regardless of port
1957 dbg("%s - Port %u EXT CHASE_RSP Data = %02x",
1958 __func__, edge_serial->rxPort, byte3);
1959 /* Currently, the only EXT_STATUS is Chase, so process
1960 * here instead of one more call to one more subroutine
1961 * If/when more EXT_STATUS, there'll be more work to do
1962 * Also, we currently clear flag and close the port
1963 * regardless of content of above's Byte3.
1964 * We could choose to do something else when Byte3 says
1965 * Timeout on Chase from Edgeport, like wait longer in
1966 * block_until_chase_response, but for now we don't.
1968 edge_port->chaseResponsePending = false;
1969 wake_up(&edge_port->wait_chase);
1972 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1973 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============", __func__, edge_serial->rxPort, byte3);
1974 /* Port->RxCheckRsp = true; */
1979 if (code == IOSP_STATUS_OPEN_RSP) {
1980 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1981 edge_port->maxTxCredits = edge_port->txCredits;
1982 dbg("%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d", __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1983 handle_new_msr(edge_port, byte2);
1985 /* send the current line settings to the port so we are
1986 in sync with any further termios calls */
1987 tty = tty_port_tty_get(&edge_port->port->port);
1989 change_port_settings(tty,
1990 edge_port, tty->termios);
1994 /* we have completed the open */
1995 edge_port->openPending = false;
1996 edge_port->open = true;
1997 wake_up(&edge_port->wait_open);
2001 /* If port is closed, silently discard all rcvd status. We can
2002 * have cases where buffered status is received AFTER the close
2003 * port command is sent to the Edgeport.
2005 if (!edge_port->open || edge_port->closePending)
2009 /* Not currently sent by Edgeport */
2010 case IOSP_STATUS_LSR:
2011 dbg("%s - Port %u LSR Status = %02x",
2012 __func__, edge_serial->rxPort, byte2);
2013 handle_new_lsr(edge_port, false, byte2, 0);
2016 case IOSP_STATUS_LSR_DATA:
2017 dbg("%s - Port %u LSR Status = %02x, Data = %02x",
2018 __func__, edge_serial->rxPort, byte2, byte3);
2019 /* byte2 is LSR Register */
2020 /* byte3 is broken data byte */
2021 handle_new_lsr(edge_port, true, byte2, byte3);
2024 * case IOSP_EXT_4_STATUS:
2025 * dbg("%s - Port %u LSR Status = %02x Data = %02x",
2026 * __func__, edge_serial->rxPort, byte2, byte3);
2029 case IOSP_STATUS_MSR:
2030 dbg("%s - Port %u MSR Status = %02x",
2031 __func__, edge_serial->rxPort, byte2);
2033 * Process this new modem status and generate appropriate
2034 * events, etc, based on the new status. This routine
2035 * also saves the MSR in Port->ShadowMsr.
2037 handle_new_msr(edge_port, byte2);
2041 dbg("%s - Unrecognized IOSP status code %u", __func__, code);
2047 /*****************************************************************************
2049 * this function passes data on to the tty flip buffer
2050 *****************************************************************************/
2051 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
2052 unsigned char *data, int length)
2056 cnt = tty_insert_flip_string(tty, data, length);
2058 dev_err(dev, "%s - dropping data, %d bytes lost\n",
2059 __func__, length - cnt);
2064 tty_flip_buffer_push(tty);
2068 /*****************************************************************************
2070 * this function handles any change to the msr register for a port.
2071 *****************************************************************************/
2072 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2074 struct async_icount *icount;
2076 dbg("%s %02x", __func__, newMsr);
2078 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
2079 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2080 icount = &edge_port->icount;
2082 /* update input line counters */
2083 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
2085 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
2087 if (newMsr & EDGEPORT_MSR_DELTA_CD)
2089 if (newMsr & EDGEPORT_MSR_DELTA_RI)
2091 wake_up_interruptible(&edge_port->delta_msr_wait);
2094 /* Save the new modem status */
2095 edge_port->shadowMSR = newMsr & 0xf0;
2099 /*****************************************************************************
2101 * this function handles any change to the lsr register for a port.
2102 *****************************************************************************/
2103 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
2104 __u8 lsr, __u8 data)
2106 __u8 newLsr = (__u8) (lsr & (__u8)
2107 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2108 struct async_icount *icount;
2110 dbg("%s - %02x", __func__, newLsr);
2112 edge_port->shadowLSR = lsr;
2114 if (newLsr & LSR_BREAK) {
2116 * Parity and Framing errors only count if they
2117 * occur exclusive of a break being
2120 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2123 /* Place LSR data byte into Rx buffer */
2125 struct tty_struct *tty =
2126 tty_port_tty_get(&edge_port->port->port);
2128 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
2132 /* update input line counters */
2133 icount = &edge_port->icount;
2134 if (newLsr & LSR_BREAK)
2136 if (newLsr & LSR_OVER_ERR)
2138 if (newLsr & LSR_PAR_ERR)
2140 if (newLsr & LSR_FRM_ERR)
2145 /****************************************************************************
2147 * writes a number of bytes to the Edgeport device's sram starting at the
2149 * If successful returns the number of bytes written, otherwise it returns
2150 * a negative error number of the problem.
2151 ****************************************************************************/
2152 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2153 __u16 length, const __u8 *data)
2156 __u16 current_length;
2157 unsigned char *transfer_buffer;
2159 dbg("%s - %x, %x, %d", __func__, extAddr, addr, length);
2161 transfer_buffer = kmalloc(64, GFP_KERNEL);
2162 if (!transfer_buffer) {
2163 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
2168 /* need to split these writes up into 64 byte chunks */
2170 while (length > 0) {
2172 current_length = 64;
2174 current_length = length;
2176 /* dbg("%s - writing %x, %x, %d", __func__,
2177 extAddr, addr, current_length); */
2178 memcpy(transfer_buffer, data, current_length);
2179 result = usb_control_msg(serial->dev,
2180 usb_sndctrlpipe(serial->dev, 0),
2181 USB_REQUEST_ION_WRITE_RAM,
2182 0x40, addr, extAddr, transfer_buffer,
2183 current_length, 300);
2186 length -= current_length;
2187 addr += current_length;
2188 data += current_length;
2191 kfree(transfer_buffer);
2196 /****************************************************************************
2198 * writes a number of bytes to the Edgeport device's ROM starting at the
2200 * If successful returns the number of bytes written, otherwise it returns
2201 * a negative error number of the problem.
2202 ****************************************************************************/
2203 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2204 __u16 length, const __u8 *data)
2207 __u16 current_length;
2208 unsigned char *transfer_buffer;
2210 /* dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); */
2212 transfer_buffer = kmalloc(64, GFP_KERNEL);
2213 if (!transfer_buffer) {
2214 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
2219 /* need to split these writes up into 64 byte chunks */
2221 while (length > 0) {
2223 current_length = 64;
2225 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_ROM, 0x40,
2233 transfer_buffer, current_length, 300);
2236 length -= current_length;
2237 addr += current_length;
2238 data += current_length;
2241 kfree(transfer_buffer);
2246 /****************************************************************************
2248 * reads a number of bytes from the Edgeport device starting at the given
2250 * If successful returns the number of bytes read, otherwise it returns
2251 * a negative error number of the problem.
2252 ****************************************************************************/
2253 static int rom_read(struct usb_serial *serial, __u16 extAddr,
2254 __u16 addr, __u16 length, __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,
2265 "%s - kmalloc(%d) failed.\n", __func__, 64);
2269 /* need to split these reads up into 64 byte chunks */
2271 while (length > 0) {
2273 current_length = 64;
2275 current_length = length;
2276 /* dbg("%s - %x, %x, %d", __func__,
2277 extAddr, addr, current_length); */
2278 result = usb_control_msg(serial->dev,
2279 usb_rcvctrlpipe(serial->dev, 0),
2280 USB_REQUEST_ION_READ_ROM,
2281 0xC0, addr, extAddr, transfer_buffer,
2282 current_length, 300);
2285 memcpy(data, transfer_buffer, current_length);
2286 length -= current_length;
2287 addr += current_length;
2288 data += current_length;
2291 kfree(transfer_buffer);
2296 /****************************************************************************
2298 * Is used to send a IOSP message to the Edgeport device
2299 ****************************************************************************/
2300 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2301 __u8 command, __u8 param)
2303 unsigned char *buffer;
2304 unsigned char *currentCommand;
2308 dbg("%s - %d, %d", __func__, command, param);
2310 buffer = kmalloc(10, GFP_ATOMIC);
2312 dev_err(&edge_port->port->dev,
2313 "%s - kmalloc(%d) failed.\n", __func__, 10);
2317 currentCommand = buffer;
2319 MAKE_CMD_EXT_CMD(¤tCommand, &length,
2320 edge_port->port->number - edge_port->port->serial->minor,
2323 status = write_cmd_usb(edge_port, buffer, length);
2325 /* something bad happened, let's free up the memory */
2333 /*****************************************************************************
2335 * this function writes the given buffer out to the bulk write endpoint.
2336 *****************************************************************************/
2337 static int write_cmd_usb(struct edgeport_port *edge_port,
2338 unsigned char *buffer, int length)
2340 struct edgeport_serial *edge_serial =
2341 usb_get_serial_data(edge_port->port->serial);
2345 usb_serial_debug_data(debug, &edge_port->port->dev,
2346 __func__, length, buffer);
2348 /* Allocate our next urb */
2349 urb = usb_alloc_urb(0, GFP_ATOMIC);
2353 atomic_inc(&CmdUrbs);
2354 dbg("%s - ALLOCATE URB %p (outstanding %d)",
2355 __func__, urb, atomic_read(&CmdUrbs));
2357 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2358 usb_sndbulkpipe(edge_serial->serial->dev,
2359 edge_serial->bulk_out_endpoint),
2360 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2362 edge_port->commandPending = true;
2363 status = usb_submit_urb(urb, GFP_ATOMIC);
2366 /* something went wrong */
2367 dev_err(&edge_port->port->dev,
2368 "%s - usb_submit_urb(write command) failed, status = %d\n",
2372 atomic_dec(&CmdUrbs);
2377 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2379 if (edge_port->commandPending) {
2380 /* command timed out */
2381 dbg("%s - command timed out", __func__);
2389 /*****************************************************************************
2390 * send_cmd_write_baud_rate
2391 * this function sends the proper command to change the baud rate of the
2393 *****************************************************************************/
2394 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2397 struct edgeport_serial *edge_serial =
2398 usb_get_serial_data(edge_port->port->serial);
2399 unsigned char *cmdBuffer;
2400 unsigned char *currCmd;
2404 unsigned char number =
2405 edge_port->port->number - edge_port->port->serial->minor;
2407 if (edge_serial->is_epic &&
2408 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2409 dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d",
2410 edge_port->port->number, baudRate);
2414 dbg("%s - port = %d, baud = %d", __func__,
2415 edge_port->port->number, baudRate);
2417 status = calc_baud_rate_divisor(baudRate, &divisor);
2419 dev_err(&edge_port->port->dev, "%s - bad baud rate\n",
2424 /* Alloc memory for the string of commands. */
2425 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2427 dev_err(&edge_port->port->dev,
2428 "%s - kmalloc(%d) failed.\n", __func__, 0x100);
2431 currCmd = cmdBuffer;
2433 /* Enable access to divisor latch */
2434 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2436 /* Write the divisor itself */
2437 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2438 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2440 /* Restore original value to disable access to divisor latch */
2441 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2442 edge_port->shadowLCR);
2444 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2446 /* something bad happened, let's free up the memory */
2454 /*****************************************************************************
2455 * calc_baud_rate_divisor
2456 * this function calculates the proper baud rate divisor for the specified
2458 *****************************************************************************/
2459 static int calc_baud_rate_divisor(int baudrate, int *divisor)
2465 dbg("%s - %d", __func__, baudrate);
2467 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2468 if (divisor_table[i].BaudRate == baudrate) {
2469 *divisor = divisor_table[i].Divisor;
2474 /* We have tried all of the standard baud rates
2475 * lets try to calculate the divisor for this baud rate
2476 * Make sure the baud rate is reasonable */
2477 if (baudrate > 50 && baudrate < 230400) {
2479 custom = (__u16)((230400L + baudrate/2) / baudrate);
2483 dbg("%s - Baud %d = %d", __func__, baudrate, custom);
2491 /*****************************************************************************
2492 * send_cmd_write_uart_register
2493 * this function builds up a uart register message and sends to the device.
2494 *****************************************************************************/
2495 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2496 __u8 regNum, __u8 regValue)
2498 struct edgeport_serial *edge_serial =
2499 usb_get_serial_data(edge_port->port->serial);
2500 unsigned char *cmdBuffer;
2501 unsigned char *currCmd;
2502 unsigned long cmdLen = 0;
2505 dbg("%s - write to %s register 0x%02x",
2506 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2508 if (edge_serial->is_epic &&
2509 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2511 dbg("SendCmdWriteUartReg - Not writing to MCR Register");
2515 if (edge_serial->is_epic &&
2516 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2518 dbg("SendCmdWriteUartReg - Not writing to LCR Register");
2522 /* Alloc memory for the string of commands. */
2523 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2524 if (cmdBuffer == NULL)
2527 currCmd = cmdBuffer;
2529 /* Build a cmd in the buffer to write the given register */
2530 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen,
2531 edge_port->port->number - edge_port->port->serial->minor,
2534 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2536 /* something bad happened, let's free up the memory */
2544 /*****************************************************************************
2545 * change_port_settings
2546 * This routine is called to set the UART on the device to match the
2547 * specified new settings.
2548 *****************************************************************************/
2550 static void change_port_settings(struct tty_struct *tty,
2551 struct edgeport_port *edge_port, struct ktermios *old_termios)
2553 struct edgeport_serial *edge_serial =
2554 usb_get_serial_data(edge_port->port->serial);
2565 dbg("%s - port %d", __func__, edge_port->port->number);
2567 if (!edge_port->open &&
2568 !edge_port->openPending) {
2569 dbg("%s - port not opened", __func__);
2573 cflag = tty->termios->c_cflag;
2575 switch (cflag & CSIZE) {
2577 lData = LCR_BITS_5; mask = 0x1f;
2578 dbg("%s - data bits = 5", __func__);
2581 lData = LCR_BITS_6; mask = 0x3f;
2582 dbg("%s - data bits = 6", __func__);
2585 lData = LCR_BITS_7; mask = 0x7f;
2586 dbg("%s - data bits = 7", __func__);
2591 dbg("%s - data bits = 8", __func__);
2595 lParity = LCR_PAR_NONE;
2596 if (cflag & PARENB) {
2597 if (cflag & CMSPAR) {
2598 if (cflag & PARODD) {
2599 lParity = LCR_PAR_MARK;
2600 dbg("%s - parity = mark", __func__);
2602 lParity = LCR_PAR_SPACE;
2603 dbg("%s - parity = space", __func__);
2605 } else if (cflag & PARODD) {
2606 lParity = LCR_PAR_ODD;
2607 dbg("%s - parity = odd", __func__);
2609 lParity = LCR_PAR_EVEN;
2610 dbg("%s - parity = even", __func__);
2613 dbg("%s - parity = none", __func__);
2616 if (cflag & CSTOPB) {
2618 dbg("%s - stop bits = 2", __func__);
2621 dbg("%s - stop bits = 1", __func__);
2624 /* figure out the flow control settings */
2625 rxFlow = txFlow = 0x00;
2626 if (cflag & CRTSCTS) {
2627 rxFlow |= IOSP_RX_FLOW_RTS;
2628 txFlow |= IOSP_TX_FLOW_CTS;
2629 dbg("%s - RTS/CTS is enabled", __func__);
2631 dbg("%s - RTS/CTS is disabled", __func__);
2634 /* if we are implementing XON/XOFF, set the start and stop character
2636 if (I_IXOFF(tty) || I_IXON(tty)) {
2637 unsigned char stop_char = STOP_CHAR(tty);
2638 unsigned char start_char = START_CHAR(tty);
2640 if ((!edge_serial->is_epic) ||
2641 ((edge_serial->is_epic) &&
2642 (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) {
2643 send_iosp_ext_cmd(edge_port,
2644 IOSP_CMD_SET_XON_CHAR, start_char);
2645 send_iosp_ext_cmd(edge_port,
2646 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2649 /* if we are implementing INBOUND XON/XOFF */
2651 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2652 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2653 __func__, start_char, stop_char);
2655 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2658 /* if we are implementing OUTBOUND XON/XOFF */
2660 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2661 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2662 __func__, start_char, stop_char);
2664 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2668 /* Set flow control to the configured value */
2669 if ((!edge_serial->is_epic) ||
2670 ((edge_serial->is_epic) &&
2671 (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)))
2672 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2673 if ((!edge_serial->is_epic) ||
2674 ((edge_serial->is_epic) &&
2675 (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)))
2676 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2679 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2680 edge_port->shadowLCR |= (lData | lParity | lStop);
2682 edge_port->validDataMask = mask;
2684 /* Send the updated LCR value to the EdgePort */
2685 status = send_cmd_write_uart_register(edge_port, LCR,
2686 edge_port->shadowLCR);
2690 /* set up the MCR register and send it to the EdgePort */
2691 edge_port->shadowMCR = MCR_MASTER_IE;
2693 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2695 status = send_cmd_write_uart_register(edge_port, MCR,
2696 edge_port->shadowMCR);
2700 /* Determine divisor based on baud rate */
2701 baud = tty_get_baud_rate(tty);
2703 /* pick a default, any default... */
2707 dbg("%s - baud rate = %d", __func__, baud);
2708 status = send_cmd_write_baud_rate(edge_port, baud);
2710 /* Speed change was not possible - put back the old speed */
2711 baud = tty_termios_baud_rate(old_termios);
2712 tty_encode_baud_rate(tty, baud, baud);
2717 /****************************************************************************
2719 * Turns a string from Unicode into ASCII.
2720 * Doesn't do a good job with any characters that are outside the normal
2721 * ASCII range, but it's only for debugging...
2722 * NOTE: expects the unicode in LE format
2723 ****************************************************************************/
2724 static void unicode_to_ascii(char *string, int buflen,
2725 __le16 *unicode, int unicode_size)
2729 if (buflen <= 0) /* never happens, but... */
2731 --buflen; /* space for nul */
2733 for (i = 0; i < unicode_size; i++) {
2736 string[i] = (char)(le16_to_cpu(unicode[i]));
2742 /****************************************************************************
2743 * get_manufacturing_desc
2744 * reads in the manufacturing descriptor and stores it into the serial
2746 ****************************************************************************/
2747 static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2751 dbg("getting manufacturer descriptor");
2753 response = rom_read(edge_serial->serial,
2754 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2755 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2756 EDGE_MANUF_DESC_LEN,
2757 (__u8 *)(&edge_serial->manuf_descriptor));
2760 dev_err(&edge_serial->serial->dev->dev,
2761 "error in getting manufacturer descriptor\n");
2764 dbg("**Manufacturer Descriptor");
2765 dbg(" RomSize: %dK",
2766 edge_serial->manuf_descriptor.RomSize);
2767 dbg(" RamSize: %dK",
2768 edge_serial->manuf_descriptor.RamSize);
2770 edge_serial->manuf_descriptor.CpuRev);
2771 dbg(" BoardRev: %d",
2772 edge_serial->manuf_descriptor.BoardRev);
2773 dbg(" NumPorts: %d",
2774 edge_serial->manuf_descriptor.NumPorts);
2775 dbg(" DescDate: %d/%d/%d",
2776 edge_serial->manuf_descriptor.DescDate[0],
2777 edge_serial->manuf_descriptor.DescDate[1],
2778 edge_serial->manuf_descriptor.DescDate[2]+1900);
2779 unicode_to_ascii(string, sizeof(string),
2780 edge_serial->manuf_descriptor.SerialNumber,
2781 edge_serial->manuf_descriptor.SerNumLength/2);
2782 dbg(" SerialNumber: %s", string);
2783 unicode_to_ascii(string, sizeof(string),
2784 edge_serial->manuf_descriptor.AssemblyNumber,
2785 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2786 dbg(" AssemblyNumber: %s", string);
2787 unicode_to_ascii(string, sizeof(string),
2788 edge_serial->manuf_descriptor.OemAssyNumber,
2789 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2790 dbg(" OemAssyNumber: %s", string);
2791 dbg(" UartType: %d",
2792 edge_serial->manuf_descriptor.UartType);
2794 edge_serial->manuf_descriptor.IonPid);
2795 dbg(" IonConfig: %d",
2796 edge_serial->manuf_descriptor.IonConfig);
2801 /****************************************************************************
2803 * reads in the bootloader descriptor and stores it into the serial
2805 ****************************************************************************/
2806 static void get_boot_desc(struct edgeport_serial *edge_serial)
2810 dbg("getting boot descriptor");
2812 response = rom_read(edge_serial->serial,
2813 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2814 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2816 (__u8 *)(&edge_serial->boot_descriptor));
2819 dev_err(&edge_serial->serial->dev->dev,
2820 "error in getting boot descriptor\n");
2822 dbg("**Boot Descriptor:");
2823 dbg(" BootCodeLength: %d",
2824 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2825 dbg(" MajorVersion: %d",
2826 edge_serial->boot_descriptor.MajorVersion);
2827 dbg(" MinorVersion: %d",
2828 edge_serial->boot_descriptor.MinorVersion);
2829 dbg(" BuildNumber: %d",
2830 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2831 dbg(" Capabilities: 0x%x",
2832 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2833 dbg(" UConfig0: %d",
2834 edge_serial->boot_descriptor.UConfig0);
2835 dbg(" UConfig1: %d",
2836 edge_serial->boot_descriptor.UConfig1);
2841 /****************************************************************************
2842 * load_application_firmware
2843 * This is called to load the application firmware to the device
2844 ****************************************************************************/
2845 static void load_application_firmware(struct edgeport_serial *edge_serial)
2847 const struct ihex_binrec *rec;
2848 const struct firmware *fw;
2849 const char *fw_name;
2850 const char *fw_info;
2855 switch (edge_serial->product_info.iDownloadFile) {
2856 case EDGE_DOWNLOAD_FILE_I930:
2857 fw_info = "downloading firmware version (930)";
2858 fw_name = "edgeport/down.fw";
2861 case EDGE_DOWNLOAD_FILE_80251:
2862 fw_info = "downloading firmware version (80251)";
2863 fw_name = "edgeport/down2.fw";
2866 case EDGE_DOWNLOAD_FILE_NONE:
2867 dbg("No download file specified, skipping download");
2874 response = request_ihex_firmware(&fw, fw_name,
2875 &edge_serial->serial->dev->dev);
2877 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
2882 rec = (const struct ihex_binrec *)fw->data;
2883 build = (rec->data[2] << 8) | rec->data[3];
2885 dbg("%s %d.%d.%d", fw_info, rec->data[0], rec->data[1], build);
2887 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2888 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2889 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2891 for (rec = ihex_next_binrec(rec); rec;
2892 rec = ihex_next_binrec(rec)) {
2893 Operaddr = be32_to_cpu(rec->addr);
2894 response = sram_write(edge_serial->serial,
2897 be16_to_cpu(rec->len),
2900 dev_err(&edge_serial->serial->dev->dev,
2901 "sram_write failed (%x, %x, %d)\n",
2902 Operaddr >> 16, Operaddr & 0xFFFF,
2903 be16_to_cpu(rec->len));
2908 dbg("sending exec_dl_code");
2909 response = usb_control_msg (edge_serial->serial->dev,
2910 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2911 USB_REQUEST_ION_EXEC_DL_CODE,
2912 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2914 release_firmware(fw);
2918 /****************************************************************************
2920 ****************************************************************************/
2921 static int edge_startup(struct usb_serial *serial)
2923 struct edgeport_serial *edge_serial;
2924 struct edgeport_port *edge_port;
2925 struct usb_device *dev;
2928 bool interrupt_in_found;
2930 bool bulk_out_found;
2931 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2932 EDGE_COMPATIBILITY_MASK1,
2933 EDGE_COMPATIBILITY_MASK2 };
2937 /* create our private serial structure */
2938 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2939 if (edge_serial == NULL) {
2940 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2943 spin_lock_init(&edge_serial->es_lock);
2944 edge_serial->serial = serial;
2945 usb_set_serial_data(serial, edge_serial);
2947 /* get the name for the device from the device */
2948 i = usb_string(dev, dev->descriptor.iManufacturer,
2949 &edge_serial->name[0], MAX_NAME_LEN+1);
2952 edge_serial->name[i++] = ' ';
2953 usb_string(dev, dev->descriptor.iProduct,
2954 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2956 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2958 /* Read the epic descriptor */
2959 if (get_epic_descriptor(edge_serial) <= 0) {
2960 /* memcpy descriptor to Supports structures */
2961 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2962 sizeof(struct edge_compatibility_bits));
2964 /* get the manufacturing descriptor for this device */
2965 get_manufacturing_desc(edge_serial);
2967 /* get the boot descriptor */
2968 get_boot_desc(edge_serial);
2970 get_product_info(edge_serial);
2973 /* set the number of ports from the manufacturing description */
2974 /* serial->num_ports = serial->product_info.NumPorts; */
2975 if ((!edge_serial->is_epic) &&
2976 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2977 dev_warn(&serial->dev->dev, "Device Reported %d serial ports "
2978 "vs. core thinking we have %d ports, email "
2979 "greg@kroah.com this information.\n",
2980 edge_serial->product_info.NumPorts,
2984 dbg("%s - time 1 %ld", __func__, jiffies);
2986 /* If not an EPiC device */
2987 if (!edge_serial->is_epic) {
2988 /* now load the application firmware into this device */
2989 load_application_firmware(edge_serial);
2991 dbg("%s - time 2 %ld", __func__, jiffies);
2993 /* Check current Edgeport EEPROM and update if necessary */
2994 update_edgeport_E2PROM(edge_serial);
2996 dbg("%s - time 3 %ld", __func__, jiffies);
2998 /* set the configuration to use #1 */
2999 /* dbg("set_configuration 1"); */
3000 /* usb_set_configuration (dev, 1); */
3002 dbg(" FirmwareMajorVersion %d.%d.%d",
3003 edge_serial->product_info.FirmwareMajorVersion,
3004 edge_serial->product_info.FirmwareMinorVersion,
3005 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
3007 /* we set up the pointers to the endpoints in the edge_open function,
3008 * as the structures aren't created yet. */
3010 /* set up our port private structures */
3011 for (i = 0; i < serial->num_ports; ++i) {
3012 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
3013 if (edge_port == NULL) {
3014 dev_err(&serial->dev->dev, "%s - Out of memory\n",
3016 for (j = 0; j < i; ++j) {
3017 kfree(usb_get_serial_port_data(serial->port[j]));
3018 usb_set_serial_port_data(serial->port[j],
3021 usb_set_serial_data(serial, NULL);
3025 spin_lock_init(&edge_port->ep_lock);
3026 edge_port->port = serial->port[i];
3027 usb_set_serial_port_data(serial->port[i], edge_port);
3032 if (edge_serial->is_epic) {
3033 /* EPIC thing, set up our interrupt polling now and our read
3034 * urb, so that the device knows it really is connected. */
3035 interrupt_in_found = bulk_in_found = bulk_out_found = false;
3036 for (i = 0; i < serial->interface->altsetting[0]
3037 .desc.bNumEndpoints; ++i) {
3038 struct usb_endpoint_descriptor *endpoint;
3041 endpoint = &serial->interface->altsetting[0].
3043 buffer_size = usb_endpoint_maxp(endpoint);
3044 if (!interrupt_in_found &&
3045 (usb_endpoint_is_int_in(endpoint))) {
3046 /* we found a interrupt in endpoint */
3047 dbg("found interrupt in");
3049 /* not set up yet, so do it now */
3050 edge_serial->interrupt_read_urb =
3051 usb_alloc_urb(0, GFP_KERNEL);
3052 if (!edge_serial->interrupt_read_urb) {
3053 dev_err(&dev->dev, "out of memory\n");
3056 edge_serial->interrupt_in_buffer =
3057 kmalloc(buffer_size, GFP_KERNEL);
3058 if (!edge_serial->interrupt_in_buffer) {
3059 dev_err(&dev->dev, "out of memory\n");
3060 usb_free_urb(edge_serial->interrupt_read_urb);
3063 edge_serial->interrupt_in_endpoint =
3064 endpoint->bEndpointAddress;
3066 /* set up our interrupt urb */
3068 edge_serial->interrupt_read_urb,
3071 endpoint->bEndpointAddress),
3072 edge_serial->interrupt_in_buffer,
3074 edge_interrupt_callback,
3076 endpoint->bInterval);
3078 interrupt_in_found = true;
3081 if (!bulk_in_found &&
3082 (usb_endpoint_is_bulk_in(endpoint))) {
3083 /* we found a bulk in endpoint */
3084 dbg("found bulk in");
3086 /* not set up yet, so do it now */
3087 edge_serial->read_urb =
3088 usb_alloc_urb(0, GFP_KERNEL);
3089 if (!edge_serial->read_urb) {
3090 dev_err(&dev->dev, "out of memory\n");
3093 edge_serial->bulk_in_buffer =
3094 kmalloc(buffer_size, GFP_KERNEL);
3095 if (!edge_serial->bulk_in_buffer) {
3096 dev_err(&dev->dev, "out of memory\n");
3097 usb_free_urb(edge_serial->read_urb);
3100 edge_serial->bulk_in_endpoint =
3101 endpoint->bEndpointAddress;
3103 /* set up our bulk in urb */
3104 usb_fill_bulk_urb(edge_serial->read_urb, dev,
3105 usb_rcvbulkpipe(dev,
3106 endpoint->bEndpointAddress),
3107 edge_serial->bulk_in_buffer,
3108 usb_endpoint_maxp(endpoint),
3109 edge_bulk_in_callback,
3111 bulk_in_found = true;
3114 if (!bulk_out_found &&
3115 (usb_endpoint_is_bulk_out(endpoint))) {
3116 /* we found a bulk out endpoint */
3117 dbg("found bulk out");
3118 edge_serial->bulk_out_endpoint =
3119 endpoint->bEndpointAddress;
3120 bulk_out_found = true;
3124 if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
3125 dev_err(&dev->dev, "Error - the proper endpoints "
3126 "were not found!\n");
3130 /* start interrupt read for this edgeport this interrupt will
3131 * continue as long as the edgeport is connected */
3132 response = usb_submit_urb(edge_serial->interrupt_read_urb,
3136 "%s - Error %d submitting control urb\n",
3137 __func__, response);
3143 /****************************************************************************
3145 * This function is called whenever the device is removed from the usb bus.
3146 ****************************************************************************/
3147 static void edge_disconnect(struct usb_serial *serial)
3149 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3151 dbg("%s", __func__);
3153 /* stop reads and writes on all ports */
3154 /* free up our endpoint stuff */
3155 if (edge_serial->is_epic) {
3156 usb_kill_urb(edge_serial->interrupt_read_urb);
3157 usb_free_urb(edge_serial->interrupt_read_urb);
3158 kfree(edge_serial->interrupt_in_buffer);
3160 usb_kill_urb(edge_serial->read_urb);
3161 usb_free_urb(edge_serial->read_urb);
3162 kfree(edge_serial->bulk_in_buffer);
3167 /****************************************************************************
3169 * This function is called when the device structure is deallocated.
3170 ****************************************************************************/
3171 static void edge_release(struct usb_serial *serial)
3173 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3176 dbg("%s", __func__);
3178 for (i = 0; i < serial->num_ports; ++i)
3179 kfree(usb_get_serial_port_data(serial->port[i]));
3184 module_usb_serial_driver(serial_drivers, id_table_combined);
3186 MODULE_AUTHOR(DRIVER_AUTHOR);
3187 MODULE_DESCRIPTION(DRIVER_DESC);
3188 MODULE_LICENSE("GPL");
3189 MODULE_FIRMWARE("edgeport/boot.fw");
3190 MODULE_FIRMWARE("edgeport/boot2.fw");
3191 MODULE_FIRMWARE("edgeport/down.fw");
3192 MODULE_FIRMWARE("edgeport/down2.fw");
3194 module_param(debug, bool, S_IRUGO | S_IWUSR);
3195 MODULE_PARM_DESC(debug, "Debug enabled or not");