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1/*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
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.
11 *
12 * Supports the following devices:
13 * Edgeport/4
14 * Edgeport/4t
15 * Edgeport/2
16 * Edgeport/4i
17 * Edgeport/2i
18 * Edgeport/421
19 * Edgeport/21
20 * Rapidport/4
21 * Edgeport/8
22 * Edgeport/2D8
23 * Edgeport/4D8
24 * Edgeport/8i
25 *
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>.
29 *
30 */
31
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 */
53
54/*
55 * Version Information
56 */
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"
60
61#define MAX_NAME_LEN 64
62
63#define CHASE_TIMEOUT (5*HZ) /* 5 seconds */
64#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
65#define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */
66
67/* receive port state */
68enum RXSTATE {
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) */
73};
74
75
76/* Transmit Fifo
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.
80 */
81struct TxFifo {
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 */
87};
88
89/* This structure holds all of the local port information */
90struct edgeport_port {
91 __u16 txCredits; /* our current credits for this port */
92 __u16 maxTxCredits; /* the max size of the port */
93
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 */
97 spinlock_t ep_lock;
98
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 */
105 __u8 validDataMask;
106 __u32 baudRate;
107
108 bool open;
109 bool openPending;
110 bool commandPending;
111 bool closePending;
112 bool chaseResponsePending;
113
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 */
118
119 struct async_icount icount;
120 struct usb_serial_port *port; /* loop back to the owner of this object */
121};
122
123
124/* This structure holds all of the individual device information */
125struct edgeport_serial {
126 char name[MAX_NAME_LEN+2]; /* string name of this device */
127
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 */
133
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 */
137
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;
142 spinlock_t es_lock;
143
144 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
145
146 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
147
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 */
157};
158
159/* baud rate information */
160struct divisor_table_entry {
161 __u32 BaudRate;
162 __u16 Divisor;
163};
164
165/*
166 * Define table of divisors for Rev A EdgePort/4 hardware
167 * These assume a 3.6864MHz crystal, the standard /16, and
168 * MCR.7 = 0.
169 */
170
171static const struct divisor_table_entry divisor_table[] = {
172 { 50, 4608},
173 { 75, 3072},
174 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
175 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
176 { 150, 1536},
177 { 300, 768},
178 { 600, 384},
179 { 1200, 192},
180 { 1800, 128},
181 { 2400, 96},
182 { 4800, 48},
183 { 7200, 32},
184 { 9600, 24},
185 { 14400, 16},
186 { 19200, 12},
187 { 38400, 6},
188 { 57600, 4},
189 { 115200, 2},
190 { 230400, 1},
191};
192
193/* local variables */
194static int debug;
195
196static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */
197
198
199/* local function prototypes */
200
201/* function prototypes for all URB callbacks */
202static void edge_interrupt_callback(struct urb *urb);
203static void edge_bulk_in_callback(struct urb *urb);
204static void edge_bulk_out_data_callback(struct urb *urb);
205static void edge_bulk_out_cmd_callback(struct urb *urb);
206
207/* function prototypes for the usbserial callbacks */
208static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
209static void edge_close(struct usb_serial_port *port);
210static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
211 const unsigned char *buf, int count);
212static int edge_write_room(struct tty_struct *tty);
213static int edge_chars_in_buffer(struct tty_struct *tty);
214static void edge_throttle(struct tty_struct *tty);
215static void edge_unthrottle(struct tty_struct *tty);
216static void edge_set_termios(struct tty_struct *tty,
217 struct usb_serial_port *port,
218 struct ktermios *old_termios);
219static int edge_ioctl(struct tty_struct *tty,
220 unsigned int cmd, unsigned long arg);
221static void edge_break(struct tty_struct *tty, int break_state);
222static int edge_tiocmget(struct tty_struct *tty);
223static int edge_tiocmset(struct tty_struct *tty,
224 unsigned int set, unsigned int clear);
225static int edge_get_icount(struct tty_struct *tty,
226 struct serial_icounter_struct *icount);
227static int edge_startup(struct usb_serial *serial);
228static void edge_disconnect(struct usb_serial *serial);
229static void edge_release(struct usb_serial *serial);
230
231#include "io_tables.h" /* all of the devices that this driver supports */
232
233/* function prototypes for all of our local functions */
234
235static void process_rcvd_data(struct edgeport_serial *edge_serial,
236 unsigned char *buffer, __u16 bufferLength);
237static void process_rcvd_status(struct edgeport_serial *edge_serial,
238 __u8 byte2, __u8 byte3);
239static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
240 unsigned char *data, int length);
241static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
242static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
243 __u8 lsr, __u8 data);
244static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
245 __u8 param);
246static int calc_baud_rate_divisor(int baud_rate, int *divisor);
247static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
248 int baudRate);
249static void change_port_settings(struct tty_struct *tty,
250 struct edgeport_port *edge_port,
251 struct ktermios *old_termios);
252static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
253 __u8 regNum, __u8 regValue);
254static int write_cmd_usb(struct edgeport_port *edge_port,
255 unsigned char *buffer, int writeLength);
256static void send_more_port_data(struct edgeport_serial *edge_serial,
257 struct edgeport_port *edge_port);
258
259static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
260 __u16 length, const __u8 *data);
261static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
262 __u16 length, __u8 *data);
263static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
264 __u16 length, const __u8 *data);
265static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
266static void get_boot_desc(struct edgeport_serial *edge_serial);
267static void load_application_firmware(struct edgeport_serial *edge_serial);
268
269static void unicode_to_ascii(char *string, int buflen,
270 __le16 *unicode, int unicode_size);
271
272
273/* ************************************************************************ */
274/* ************************************************************************ */
275/* ************************************************************************ */
276/* ************************************************************************ */
277
278/************************************************************************
279 * *
280 * update_edgeport_E2PROM() Compare current versions of *
281 * Boot ROM and Manufacture *
282 * Descriptors with versions *
283 * embedded in this driver *
284 * *
285 ************************************************************************/
286static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
287{
288 __u32 BootCurVer;
289 __u32 BootNewVer;
290 __u8 BootMajorVersion;
291 __u8 BootMinorVersion;
292 __u16 BootBuildNumber;
293 __u32 Bootaddr;
294 const struct ihex_binrec *rec;
295 const struct firmware *fw;
296 const char *fw_name;
297 int response;
298
299 switch (edge_serial->product_info.iDownloadFile) {
300 case EDGE_DOWNLOAD_FILE_I930:
301 fw_name = "edgeport/boot.fw";
302 break;
303 case EDGE_DOWNLOAD_FILE_80251:
304 fw_name = "edgeport/boot2.fw";
305 break;
306 default:
307 return;
308 }
309
310 response = request_ihex_firmware(&fw, fw_name,
311 &edge_serial->serial->dev->dev);
312 if (response) {
313 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
314 fw_name, response);
315 return;
316 }
317
318 rec = (const struct ihex_binrec *)fw->data;
319 BootMajorVersion = rec->data[0];
320 BootMinorVersion = rec->data[1];
321 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
322
323 /* Check Boot Image Version */
324 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
325 (edge_serial->boot_descriptor.MinorVersion << 16) +
326 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
327
328 BootNewVer = (BootMajorVersion << 24) +
329 (BootMinorVersion << 16) +
330 BootBuildNumber;
331
332 dbg("Current Boot Image version %d.%d.%d",
333 edge_serial->boot_descriptor.MajorVersion,
334 edge_serial->boot_descriptor.MinorVersion,
335 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
336
337
338 if (BootNewVer > BootCurVer) {
339 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
340 edge_serial->boot_descriptor.MajorVersion,
341 edge_serial->boot_descriptor.MinorVersion,
342 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
343 BootMajorVersion, BootMinorVersion, BootBuildNumber);
344
345 dbg("Downloading new Boot Image");
346
347 for (rec = ihex_next_binrec(rec); rec;
348 rec = ihex_next_binrec(rec)) {
349 Bootaddr = be32_to_cpu(rec->addr);
350 response = rom_write(edge_serial->serial,
351 Bootaddr >> 16,
352 Bootaddr & 0xFFFF,
353 be16_to_cpu(rec->len),
354 &rec->data[0]);
355 if (response < 0) {
356 dev_err(&edge_serial->serial->dev->dev,
357 "rom_write failed (%x, %x, %d)\n",
358 Bootaddr >> 16, Bootaddr & 0xFFFF,
359 be16_to_cpu(rec->len));
360 break;
361 }
362 }
363 } else {
364 dbg("Boot Image -- already up to date");
365 }
366 release_firmware(fw);
367}
368
369#if 0
370/************************************************************************
371 *
372 * Get string descriptor from device
373 *
374 ************************************************************************/
375static int get_string_desc(struct usb_device *dev, int Id,
376 struct usb_string_descriptor **pRetDesc)
377{
378 struct usb_string_descriptor StringDesc;
379 struct usb_string_descriptor *pStringDesc;
380
381 dbg("%s - USB String ID = %d", __func__, Id);
382
383 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
384 sizeof(StringDesc)))
385 return 0;
386
387 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
388 if (!pStringDesc)
389 return -1;
390
391 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
392 StringDesc.bLength)) {
393 kfree(pStringDesc);
394 return -1;
395 }
396
397 *pRetDesc = pStringDesc;
398 return 0;
399}
400#endif
401
402static void dump_product_info(struct edgeport_product_info *product_info)
403{
404 /* Dump Product Info structure */
405 dbg("**Product Information:");
406 dbg(" ProductId %x", product_info->ProductId);
407 dbg(" NumPorts %d", product_info->NumPorts);
408 dbg(" ProdInfoVer %d", product_info->ProdInfoVer);
409 dbg(" IsServer %d", product_info->IsServer);
410 dbg(" IsRS232 %d", product_info->IsRS232);
411 dbg(" IsRS422 %d", product_info->IsRS422);
412 dbg(" IsRS485 %d", product_info->IsRS485);
413 dbg(" RomSize %d", product_info->RomSize);
414 dbg(" RamSize %d", product_info->RamSize);
415 dbg(" CpuRev %x", product_info->CpuRev);
416 dbg(" BoardRev %x", product_info->BoardRev);
417 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
418 product_info->BootMinorVersion,
419 le16_to_cpu(product_info->BootBuildNumber));
420 dbg(" FirmwareMajorVersion %d.%d.%d",
421 product_info->FirmwareMajorVersion,
422 product_info->FirmwareMinorVersion,
423 le16_to_cpu(product_info->FirmwareBuildNumber));
424 dbg(" ManufactureDescDate %d/%d/%d",
425 product_info->ManufactureDescDate[0],
426 product_info->ManufactureDescDate[1],
427 product_info->ManufactureDescDate[2]+1900);
428 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
429 dbg(" EpicVer %d", product_info->EpicVer);
430}
431
432static void get_product_info(struct edgeport_serial *edge_serial)
433{
434 struct edgeport_product_info *product_info = &edge_serial->product_info;
435
436 memset(product_info, 0, sizeof(struct edgeport_product_info));
437
438 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
439 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
440 product_info->ProdInfoVer = 0;
441
442 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
443 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
444 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
445 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
446
447 product_info->BootMajorVersion =
448 edge_serial->boot_descriptor.MajorVersion;
449 product_info->BootMinorVersion =
450 edge_serial->boot_descriptor.MinorVersion;
451 product_info->BootBuildNumber =
452 edge_serial->boot_descriptor.BuildNumber;
453
454 memcpy(product_info->ManufactureDescDate,
455 edge_serial->manuf_descriptor.DescDate,
456 sizeof(edge_serial->manuf_descriptor.DescDate));
457
458 /* check if this is 2nd generation hardware */
459 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
460 & ION_DEVICE_ID_80251_NETCHIP)
461 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
462 else
463 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
464
465 /* Determine Product type and set appropriate flags */
466 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
467 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
468 case ION_DEVICE_ID_EDGEPORT_4T:
469 case ION_DEVICE_ID_EDGEPORT_4:
470 case ION_DEVICE_ID_EDGEPORT_2:
471 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
472 case ION_DEVICE_ID_EDGEPORT_8:
473 case ION_DEVICE_ID_EDGEPORT_421:
474 case ION_DEVICE_ID_EDGEPORT_21:
475 case ION_DEVICE_ID_EDGEPORT_2_DIN:
476 case ION_DEVICE_ID_EDGEPORT_4_DIN:
477 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
478 product_info->IsRS232 = 1;
479 break;
480
481 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
482 product_info->IsRS422 = 1;
483 product_info->IsRS485 = 1;
484 break;
485
486 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
487 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
488 product_info->IsRS422 = 1;
489 break;
490 }
491
492 dump_product_info(product_info);
493}
494
495static int get_epic_descriptor(struct edgeport_serial *ep)
496{
497 int result;
498 struct usb_serial *serial = ep->serial;
499 struct edgeport_product_info *product_info = &ep->product_info;
500 struct edge_compatibility_descriptor *epic = &ep->epic_descriptor;
501 struct edge_compatibility_bits *bits;
502
503 ep->is_epic = 0;
504 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
505 USB_REQUEST_ION_GET_EPIC_DESC,
506 0xC0, 0x00, 0x00,
507 &ep->epic_descriptor,
508 sizeof(struct edge_compatibility_descriptor),
509 300);
510
511 dbg("%s result = %d", __func__, result);
512
513 if (result > 0) {
514 ep->is_epic = 1;
515 memset(product_info, 0, sizeof(struct edgeport_product_info));
516
517 product_info->NumPorts = epic->NumPorts;
518 product_info->ProdInfoVer = 0;
519 product_info->FirmwareMajorVersion = epic->MajorVersion;
520 product_info->FirmwareMinorVersion = epic->MinorVersion;
521 product_info->FirmwareBuildNumber = epic->BuildNumber;
522 product_info->iDownloadFile = epic->iDownloadFile;
523 product_info->EpicVer = epic->EpicVer;
524 product_info->Epic = epic->Supports;
525 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
526 dump_product_info(product_info);
527
528 bits = &ep->epic_descriptor.Supports;
529 dbg("**EPIC descriptor:");
530 dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE");
531 dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE");
532 dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE");
533 dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE");
534 dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
535 dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
536 dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE");
537 dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE");
538 dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
539 dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE");
540 dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE");
541 dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
542 dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE");
543 }
544
545 return result;
546}
547
548
549/************************************************************************/
550/************************************************************************/
551/* U S B C A L L B A C K F U N C T I O N S */
552/* U S B C A L L B A C K F U N C T I O N S */
553/************************************************************************/
554/************************************************************************/
555
556/*****************************************************************************
557 * edge_interrupt_callback
558 * this is the callback function for when we have received data on the
559 * interrupt endpoint.
560 *****************************************************************************/
561static void edge_interrupt_callback(struct urb *urb)
562{
563 struct edgeport_serial *edge_serial = urb->context;
564 struct edgeport_port *edge_port;
565 struct usb_serial_port *port;
566 struct tty_struct *tty;
567 unsigned char *data = urb->transfer_buffer;
568 int length = urb->actual_length;
569 int bytes_avail;
570 int position;
571 int txCredits;
572 int portNumber;
573 int result;
574 int status = urb->status;
575
576 dbg("%s", __func__);
577
578 switch (status) {
579 case 0:
580 /* success */
581 break;
582 case -ECONNRESET:
583 case -ENOENT:
584 case -ESHUTDOWN:
585 /* this urb is terminated, clean up */
586 dbg("%s - urb shutting down with status: %d",
587 __func__, status);
588 return;
589 default:
590 dbg("%s - nonzero urb status received: %d", __func__, status);
591 goto exit;
592 }
593
594 /* process this interrupt-read even if there are no ports open */
595 if (length) {
596 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
597 __func__, length, data);
598
599 if (length > 1) {
600 bytes_avail = data[0] | (data[1] << 8);
601 if (bytes_avail) {
602 spin_lock(&edge_serial->es_lock);
603 edge_serial->rxBytesAvail += bytes_avail;
604 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress);
605
606 if (edge_serial->rxBytesAvail > 0 &&
607 !edge_serial->read_in_progress) {
608 dbg("%s - posting a read", __func__);
609 edge_serial->read_in_progress = true;
610
611 /* we have pending bytes on the
612 bulk in pipe, send a request */
613 edge_serial->read_urb->dev = edge_serial->serial->dev;
614 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
615 if (result) {
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;
618 }
619 }
620 spin_unlock(&edge_serial->es_lock);
621 }
622 }
623 /* grab the txcredits for the ports if available */
624 position = 2;
625 portNumber = 0;
626 while ((position < length) &&
627 (portNumber < edge_serial->serial->num_ports)) {
628 txCredits = data[position] | (data[position+1] << 8);
629 if (txCredits) {
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);
639
640 /* tell the tty driver that something
641 has changed */
642 tty = tty_port_tty_get(
643 &edge_port->port->port);
644 if (tty) {
645 tty_wakeup(tty);
646 tty_kref_put(tty);
647 }
648 /* Since we have more credit, check
649 if more data can be sent */
650 send_more_port_data(edge_serial,
651 edge_port);
652 }
653 }
654 position += 2;
655 ++portNumber;
656 }
657 }
658
659exit:
660 result = usb_submit_urb(urb, GFP_ATOMIC);
661 if (result)
662 dev_err(&urb->dev->dev,
663 "%s - Error %d submitting control urb\n",
664 __func__, result);
665}
666
667
668/*****************************************************************************
669 * edge_bulk_in_callback
670 * this is the callback function for when we have received data on the
671 * bulk in endpoint.
672 *****************************************************************************/
673static void edge_bulk_in_callback(struct urb *urb)
674{
675 struct edgeport_serial *edge_serial = urb->context;
676 unsigned char *data = urb->transfer_buffer;
677 int retval;
678 __u16 raw_data_length;
679 int status = urb->status;
680
681 dbg("%s", __func__);
682
683 if (status) {
684 dbg("%s - nonzero read bulk status received: %d",
685 __func__, status);
686 edge_serial->read_in_progress = false;
687 return;
688 }
689
690 if (urb->actual_length == 0) {
691 dbg("%s - read bulk callback with no data", __func__);
692 edge_serial->read_in_progress = false;
693 return;
694 }
695
696 raw_data_length = urb->actual_length;
697
698 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
699 __func__, raw_data_length, data);
700
701 spin_lock(&edge_serial->es_lock);
702
703 /* decrement our rxBytes available by the number that we just got */
704 edge_serial->rxBytesAvail -= raw_data_length;
705
706 dbg("%s - Received = %d, rxBytesAvail %d", __func__,
707 raw_data_length, edge_serial->rxBytesAvail);
708
709 process_rcvd_data(edge_serial, data, urb->actual_length);
710
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 edge_serial->read_urb->dev = edge_serial->serial->dev;
715 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
716 if (retval) {
717 dev_err(&urb->dev->dev,
718 "%s - usb_submit_urb(read bulk) failed, "
719 "retval = %d\n", __func__, retval);
720 edge_serial->read_in_progress = false;
721 }
722 } else {
723 edge_serial->read_in_progress = false;
724 }
725
726 spin_unlock(&edge_serial->es_lock);
727}
728
729
730/*****************************************************************************
731 * edge_bulk_out_data_callback
732 * this is the callback function for when we have finished sending
733 * serial data on the bulk out endpoint.
734 *****************************************************************************/
735static void edge_bulk_out_data_callback(struct urb *urb)
736{
737 struct edgeport_port *edge_port = urb->context;
738 struct tty_struct *tty;
739 int status = urb->status;
740
741 dbg("%s", __func__);
742
743 if (status) {
744 dbg("%s - nonzero write bulk status received: %d",
745 __func__, status);
746 }
747
748 tty = tty_port_tty_get(&edge_port->port->port);
749
750 if (tty && edge_port->open) {
751 /* let the tty driver wakeup if it has a special
752 write_wakeup function */
753 tty_wakeup(tty);
754 }
755 tty_kref_put(tty);
756
757 /* Release the Write URB */
758 edge_port->write_in_progress = false;
759
760 /* Check if more data needs to be sent */
761 send_more_port_data((struct edgeport_serial *)
762 (usb_get_serial_data(edge_port->port->serial)), edge_port);
763}
764
765
766/*****************************************************************************
767 * BulkOutCmdCallback
768 * this is the callback function for when we have finished sending a
769 * command on the bulk out endpoint.
770 *****************************************************************************/
771static void edge_bulk_out_cmd_callback(struct urb *urb)
772{
773 struct edgeport_port *edge_port = urb->context;
774 struct tty_struct *tty;
775 int status = urb->status;
776
777 dbg("%s", __func__);
778
779 atomic_dec(&CmdUrbs);
780 dbg("%s - FREE URB %p (outstanding %d)", __func__,
781 urb, atomic_read(&CmdUrbs));
782
783
784 /* clean up the transfer buffer */
785 kfree(urb->transfer_buffer);
786
787 /* Free the command urb */
788 usb_free_urb(urb);
789
790 if (status) {
791 dbg("%s - nonzero write bulk status received: %d",
792 __func__, status);
793 return;
794 }
795
796 /* Get pointer to tty */
797 tty = tty_port_tty_get(&edge_port->port->port);
798
799 /* tell the tty driver that something has changed */
800 if (tty && edge_port->open)
801 tty_wakeup(tty);
802 tty_kref_put(tty);
803
804 /* we have completed the command */
805 edge_port->commandPending = false;
806 wake_up(&edge_port->wait_command);
807}
808
809
810/*****************************************************************************
811 * Driver tty interface functions
812 *****************************************************************************/
813
814/*****************************************************************************
815 * SerialOpen
816 * this function is called by the tty driver when a port is opened
817 * If successful, we return 0
818 * Otherwise we return a negative error number.
819 *****************************************************************************/
820static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
821{
822 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
823 struct usb_serial *serial;
824 struct edgeport_serial *edge_serial;
825 int response;
826
827 dbg("%s - port %d", __func__, port->number);
828
829 if (edge_port == NULL)
830 return -ENODEV;
831
832 /* see if we've set up our endpoint info yet (can't set it up
833 in edge_startup as the structures were not set up at that time.) */
834 serial = port->serial;
835 edge_serial = usb_get_serial_data(serial);
836 if (edge_serial == NULL)
837 return -ENODEV;
838 if (edge_serial->interrupt_in_buffer == NULL) {
839 struct usb_serial_port *port0 = serial->port[0];
840
841 /* not set up yet, so do it now */
842 edge_serial->interrupt_in_buffer =
843 port0->interrupt_in_buffer;
844 edge_serial->interrupt_in_endpoint =
845 port0->interrupt_in_endpointAddress;
846 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
847 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
848 edge_serial->bulk_in_endpoint =
849 port0->bulk_in_endpointAddress;
850 edge_serial->read_urb = port0->read_urb;
851 edge_serial->bulk_out_endpoint =
852 port0->bulk_out_endpointAddress;
853
854 /* set up our interrupt urb */
855 usb_fill_int_urb(edge_serial->interrupt_read_urb,
856 serial->dev,
857 usb_rcvintpipe(serial->dev,
858 port0->interrupt_in_endpointAddress),
859 port0->interrupt_in_buffer,
860 edge_serial->interrupt_read_urb->transfer_buffer_length,
861 edge_interrupt_callback, edge_serial,
862 edge_serial->interrupt_read_urb->interval);
863
864 /* set up our bulk in urb */
865 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
866 usb_rcvbulkpipe(serial->dev,
867 port0->bulk_in_endpointAddress),
868 port0->bulk_in_buffer,
869 edge_serial->read_urb->transfer_buffer_length,
870 edge_bulk_in_callback, edge_serial);
871 edge_serial->read_in_progress = false;
872
873 /* start interrupt read for this edgeport
874 * this interrupt will continue as long
875 * as the edgeport is connected */
876 response = usb_submit_urb(edge_serial->interrupt_read_urb,
877 GFP_KERNEL);
878 if (response) {
879 dev_err(&port->dev,
880 "%s - Error %d submitting control urb\n",
881 __func__, response);
882 }
883 }
884
885 /* initialize our wait queues */
886 init_waitqueue_head(&edge_port->wait_open);
887 init_waitqueue_head(&edge_port->wait_chase);
888 init_waitqueue_head(&edge_port->delta_msr_wait);
889 init_waitqueue_head(&edge_port->wait_command);
890
891 /* initialize our icount structure */
892 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
893
894 /* initialize our port settings */
895 edge_port->txCredits = 0; /* Can't send any data yet */
896 /* Must always set this bit to enable ints! */
897 edge_port->shadowMCR = MCR_MASTER_IE;
898 edge_port->chaseResponsePending = false;
899
900 /* send a open port command */
901 edge_port->openPending = true;
902 edge_port->open = false;
903 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
904
905 if (response < 0) {
906 dev_err(&port->dev, "%s - error sending open port command\n",
907 __func__);
908 edge_port->openPending = false;
909 return -ENODEV;
910 }
911
912 /* now wait for the port to be completely opened */
913 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
914 OPEN_TIMEOUT);
915
916 if (!edge_port->open) {
917 /* open timed out */
918 dbg("%s - open timedout", __func__);
919 edge_port->openPending = false;
920 return -ENODEV;
921 }
922
923 /* create the txfifo */
924 edge_port->txfifo.head = 0;
925 edge_port->txfifo.tail = 0;
926 edge_port->txfifo.count = 0;
927 edge_port->txfifo.size = edge_port->maxTxCredits;
928 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
929
930 if (!edge_port->txfifo.fifo) {
931 dbg("%s - no memory", __func__);
932 edge_close(port);
933 return -ENOMEM;
934 }
935
936 /* Allocate a URB for the write */
937 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
938 edge_port->write_in_progress = false;
939
940 if (!edge_port->write_urb) {
941 dbg("%s - no memory", __func__);
942 edge_close(port);
943 return -ENOMEM;
944 }
945
946 dbg("%s(%d) - Initialize TX fifo to %d bytes",
947 __func__, port->number, edge_port->maxTxCredits);
948
949 dbg("%s exited", __func__);
950
951 return 0;
952}
953
954
955/************************************************************************
956 *
957 * block_until_chase_response
958 *
959 * This function will block the close until one of the following:
960 * 1. Response to our Chase comes from Edgeport
961 * 2. A timeout of 10 seconds without activity has expired
962 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
963 *
964 ************************************************************************/
965static void block_until_chase_response(struct edgeport_port *edge_port)
966{
967 DEFINE_WAIT(wait);
968 __u16 lastCredits;
969 int timeout = 1*HZ;
970 int loop = 10;
971
972 while (1) {
973 /* Save Last credits */
974 lastCredits = edge_port->txCredits;
975
976 /* Did we get our Chase response */
977 if (!edge_port->chaseResponsePending) {
978 dbg("%s - Got Chase Response", __func__);
979
980 /* did we get all of our credit back? */
981 if (edge_port->txCredits == edge_port->maxTxCredits) {
982 dbg("%s - Got all credits", __func__);
983 return;
984 }
985 }
986
987 /* Block the thread for a while */
988 prepare_to_wait(&edge_port->wait_chase, &wait,
989 TASK_UNINTERRUPTIBLE);
990 schedule_timeout(timeout);
991 finish_wait(&edge_port->wait_chase, &wait);
992
993 if (lastCredits == edge_port->txCredits) {
994 /* No activity.. count down. */
995 loop--;
996 if (loop == 0) {
997 edge_port->chaseResponsePending = false;
998 dbg("%s - Chase TIMEOUT", __func__);
999 return;
1000 }
1001 } else {
1002 /* Reset timeout value back to 10 seconds */
1003 dbg("%s - Last %d, Current %d", __func__,
1004 lastCredits, edge_port->txCredits);
1005 loop = 10;
1006 }
1007 }
1008}
1009
1010
1011/************************************************************************
1012 *
1013 * block_until_tx_empty
1014 *
1015 * This function will block the close until one of the following:
1016 * 1. TX count are 0
1017 * 2. The edgeport has stopped
1018 * 3. A timeout of 3 seconds without activity has expired
1019 *
1020 ************************************************************************/
1021static void block_until_tx_empty(struct edgeport_port *edge_port)
1022{
1023 DEFINE_WAIT(wait);
1024 struct TxFifo *fifo = &edge_port->txfifo;
1025 __u32 lastCount;
1026 int timeout = HZ/10;
1027 int loop = 30;
1028
1029 while (1) {
1030 /* Save Last count */
1031 lastCount = fifo->count;
1032
1033 /* Is the Edgeport Buffer empty? */
1034 if (lastCount == 0) {
1035 dbg("%s - TX Buffer Empty", __func__);
1036 return;
1037 }
1038
1039 /* Block the thread for a while */
1040 prepare_to_wait(&edge_port->wait_chase, &wait,
1041 TASK_UNINTERRUPTIBLE);
1042 schedule_timeout(timeout);
1043 finish_wait(&edge_port->wait_chase, &wait);
1044
1045 dbg("%s wait", __func__);
1046
1047 if (lastCount == fifo->count) {
1048 /* No activity.. count down. */
1049 loop--;
1050 if (loop == 0) {
1051 dbg("%s - TIMEOUT", __func__);
1052 return;
1053 }
1054 } else {
1055 /* Reset timeout value back to seconds */
1056 loop = 30;
1057 }
1058 }
1059}
1060
1061
1062/*****************************************************************************
1063 * edge_close
1064 * this function is called by the tty driver when a port is closed
1065 *****************************************************************************/
1066static void edge_close(struct usb_serial_port *port)
1067{
1068 struct edgeport_serial *edge_serial;
1069 struct edgeport_port *edge_port;
1070 int status;
1071
1072 dbg("%s - port %d", __func__, port->number);
1073
1074 edge_serial = usb_get_serial_data(port->serial);
1075 edge_port = usb_get_serial_port_data(port);
1076 if (edge_serial == NULL || edge_port == NULL)
1077 return;
1078
1079 /* block until tx is empty */
1080 block_until_tx_empty(edge_port);
1081
1082 edge_port->closePending = true;
1083
1084 if ((!edge_serial->is_epic) ||
1085 ((edge_serial->is_epic) &&
1086 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1087 /* flush and chase */
1088 edge_port->chaseResponsePending = true;
1089
1090 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__);
1091 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1092 if (status == 0)
1093 /* block until chase finished */
1094 block_until_chase_response(edge_port);
1095 else
1096 edge_port->chaseResponsePending = false;
1097 }
1098
1099 if ((!edge_serial->is_epic) ||
1100 ((edge_serial->is_epic) &&
1101 (edge_serial->epic_descriptor.Supports.IOSPClose))) {
1102 /* close the port */
1103 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__);
1104 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1105 }
1106
1107 /* port->close = true; */
1108 edge_port->closePending = false;
1109 edge_port->open = false;
1110 edge_port->openPending = false;
1111
1112 usb_kill_urb(edge_port->write_urb);
1113
1114 if (edge_port->write_urb) {
1115 /* if this urb had a transfer buffer already
1116 (old transfer) free it */
1117 kfree(edge_port->write_urb->transfer_buffer);
1118 usb_free_urb(edge_port->write_urb);
1119 edge_port->write_urb = NULL;
1120 }
1121 kfree(edge_port->txfifo.fifo);
1122 edge_port->txfifo.fifo = NULL;
1123
1124 dbg("%s exited", __func__);
1125}
1126
1127/*****************************************************************************
1128 * SerialWrite
1129 * this function is called by the tty driver when data should be written
1130 * to the port.
1131 * If successful, we return the number of bytes written, otherwise we
1132 * return a negative error number.
1133 *****************************************************************************/
1134static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1135 const unsigned char *data, int count)
1136{
1137 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1138 struct TxFifo *fifo;
1139 int copySize;
1140 int bytesleft;
1141 int firsthalf;
1142 int secondhalf;
1143 unsigned long flags;
1144
1145 dbg("%s - port %d", __func__, port->number);
1146
1147 if (edge_port == NULL)
1148 return -ENODEV;
1149
1150 /* get a pointer to the Tx fifo */
1151 fifo = &edge_port->txfifo;
1152
1153 spin_lock_irqsave(&edge_port->ep_lock, flags);
1154
1155 /* calculate number of bytes to put in fifo */
1156 copySize = min((unsigned int)count,
1157 (edge_port->txCredits - fifo->count));
1158
1159 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes",
1160 __func__, port->number, count,
1161 edge_port->txCredits - fifo->count, copySize);
1162
1163 /* catch writes of 0 bytes which the tty driver likes to give us,
1164 and when txCredits is empty */
1165 if (copySize == 0) {
1166 dbg("%s - copySize = Zero", __func__);
1167 goto finish_write;
1168 }
1169
1170 /* queue the data
1171 * since we can never overflow the buffer we do not have to check for a
1172 * full condition
1173 *
1174 * the copy is done is two parts -- first fill to the end of the buffer
1175 * then copy the reset from the start of the buffer
1176 */
1177 bytesleft = fifo->size - fifo->head;
1178 firsthalf = min(bytesleft, copySize);
1179 dbg("%s - copy %d bytes of %d into fifo ", __func__,
1180 firsthalf, bytesleft);
1181
1182 /* now copy our data */
1183 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1184 usb_serial_debug_data(debug, &port->dev, __func__,
1185 firsthalf, &fifo->fifo[fifo->head]);
1186
1187 /* update the index and size */
1188 fifo->head += firsthalf;
1189 fifo->count += firsthalf;
1190
1191 /* wrap the index */
1192 if (fifo->head == fifo->size)
1193 fifo->head = 0;
1194
1195 secondhalf = copySize-firsthalf;
1196
1197 if (secondhalf) {
1198 dbg("%s - copy rest of data %d", __func__, secondhalf);
1199 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1200 usb_serial_debug_data(debug, &port->dev, __func__,
1201 secondhalf, &fifo->fifo[fifo->head]);
1202 /* update the index and size */
1203 fifo->count += secondhalf;
1204 fifo->head += secondhalf;
1205 /* No need to check for wrap since we can not get to end of
1206 * the fifo in this part
1207 */
1208 }
1209
1210finish_write:
1211 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1212
1213 send_more_port_data((struct edgeport_serial *)
1214 usb_get_serial_data(port->serial), edge_port);
1215
1216 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__,
1217 copySize, edge_port->txCredits, fifo->count);
1218
1219 return copySize;
1220}
1221
1222
1223/************************************************************************
1224 *
1225 * send_more_port_data()
1226 *
1227 * This routine attempts to write additional UART transmit data
1228 * to a port over the USB bulk pipe. It is called (1) when new
1229 * data has been written to a port's TxBuffer from higher layers
1230 * (2) when the peripheral sends us additional TxCredits indicating
1231 * that it can accept more Tx data for a given port; and (3) when
1232 * a bulk write completes successfully and we want to see if we
1233 * can transmit more.
1234 *
1235 ************************************************************************/
1236static void send_more_port_data(struct edgeport_serial *edge_serial,
1237 struct edgeport_port *edge_port)
1238{
1239 struct TxFifo *fifo = &edge_port->txfifo;
1240 struct urb *urb;
1241 unsigned char *buffer;
1242 int status;
1243 int count;
1244 int bytesleft;
1245 int firsthalf;
1246 int secondhalf;
1247 unsigned long flags;
1248
1249 dbg("%s(%d)", __func__, edge_port->port->number);
1250
1251 spin_lock_irqsave(&edge_port->ep_lock, flags);
1252
1253 if (edge_port->write_in_progress ||
1254 !edge_port->open ||
1255 (fifo->count == 0)) {
1256 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d",
1257 __func__, edge_port->port->number,
1258 fifo->count, edge_port->write_in_progress);
1259 goto exit_send;
1260 }
1261
1262 /* since the amount of data in the fifo will always fit into the
1263 * edgeport buffer we do not need to check the write length
1264 *
1265 * Do we have enough credits for this port to make it worthwhile
1266 * to bother queueing a write. If it's too small, say a few bytes,
1267 * it's better to wait for more credits so we can do a larger write.
1268 */
1269 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1270 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d",
1271 __func__, edge_port->port->number, fifo->count,
1272 edge_port->txCredits);
1273 goto exit_send;
1274 }
1275
1276 /* lock this write */
1277 edge_port->write_in_progress = true;
1278
1279 /* get a pointer to the write_urb */
1280 urb = edge_port->write_urb;
1281
1282 /* make sure transfer buffer is freed */
1283 kfree(urb->transfer_buffer);
1284 urb->transfer_buffer = NULL;
1285
1286 /* build the data header for the buffer and port that we are about
1287 to send out */
1288 count = fifo->count;
1289 buffer = kmalloc(count+2, GFP_ATOMIC);
1290 if (buffer == NULL) {
1291 dev_err(&edge_port->port->dev,
1292 "%s - no more kernel memory...\n", __func__);
1293 edge_port->write_in_progress = false;
1294 goto exit_send;
1295 }
1296 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number
1297 - edge_port->port->serial->minor, count);
1298 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number
1299 - edge_port->port->serial->minor, count);
1300
1301 /* now copy our data */
1302 bytesleft = fifo->size - fifo->tail;
1303 firsthalf = min(bytesleft, count);
1304 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1305 fifo->tail += firsthalf;
1306 fifo->count -= firsthalf;
1307 if (fifo->tail == fifo->size)
1308 fifo->tail = 0;
1309
1310 secondhalf = count-firsthalf;
1311 if (secondhalf) {
1312 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1313 secondhalf);
1314 fifo->tail += secondhalf;
1315 fifo->count -= secondhalf;
1316 }
1317
1318 if (count)
1319 usb_serial_debug_data(debug, &edge_port->port->dev,
1320 __func__, count, &buffer[2]);
1321
1322 /* fill up the urb with all of our data and submit it */
1323 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1324 usb_sndbulkpipe(edge_serial->serial->dev,
1325 edge_serial->bulk_out_endpoint),
1326 buffer, count+2,
1327 edge_bulk_out_data_callback, edge_port);
1328
1329 /* decrement the number of credits we have by the number we just sent */
1330 edge_port->txCredits -= count;
1331 edge_port->icount.tx += count;
1332
1333 urb->dev = edge_serial->serial->dev;
1334 status = usb_submit_urb(urb, GFP_ATOMIC);
1335 if (status) {
1336 /* something went wrong */
1337 dev_err(&edge_port->port->dev,
1338 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1339 __func__, status);
1340 edge_port->write_in_progress = false;
1341
1342 /* revert the credits as something bad happened. */
1343 edge_port->txCredits += count;
1344 edge_port->icount.tx -= count;
1345 }
1346 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d",
1347 __func__, count, edge_port->txCredits, fifo->count);
1348
1349exit_send:
1350 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1351}
1352
1353
1354/*****************************************************************************
1355 * edge_write_room
1356 * this function is called by the tty driver when it wants to know how
1357 * many bytes of data we can accept for a specific port. If successful,
1358 * we return the amount of room that we have for this port (the txCredits)
1359 * otherwise we return a negative error number.
1360 *****************************************************************************/
1361static int edge_write_room(struct tty_struct *tty)
1362{
1363 struct usb_serial_port *port = tty->driver_data;
1364 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1365 int room;
1366 unsigned long flags;
1367
1368 dbg("%s", __func__);
1369
1370 if (edge_port == NULL)
1371 return 0;
1372 if (edge_port->closePending)
1373 return 0;
1374
1375 dbg("%s - port %d", __func__, port->number);
1376
1377 if (!edge_port->open) {
1378 dbg("%s - port not opened", __func__);
1379 return 0;
1380 }
1381
1382 /* total of both buffers is still txCredit */
1383 spin_lock_irqsave(&edge_port->ep_lock, flags);
1384 room = edge_port->txCredits - edge_port->txfifo.count;
1385 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1386
1387 dbg("%s - returns %d", __func__, room);
1388 return room;
1389}
1390
1391
1392/*****************************************************************************
1393 * edge_chars_in_buffer
1394 * this function is called by the tty driver when it wants to know how
1395 * many bytes of data we currently have outstanding in the port (data that
1396 * has been written, but hasn't made it out the port yet)
1397 * If successful, we return the number of bytes left to be written in the
1398 * system,
1399 * Otherwise we return a negative error number.
1400 *****************************************************************************/
1401static int edge_chars_in_buffer(struct tty_struct *tty)
1402{
1403 struct usb_serial_port *port = tty->driver_data;
1404 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1405 int num_chars;
1406 unsigned long flags;
1407
1408 dbg("%s", __func__);
1409
1410 if (edge_port == NULL)
1411 return 0;
1412 if (edge_port->closePending)
1413 return 0;
1414
1415 if (!edge_port->open) {
1416 dbg("%s - port not opened", __func__);
1417 return 0;
1418 }
1419
1420 spin_lock_irqsave(&edge_port->ep_lock, flags);
1421 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1422 edge_port->txfifo.count;
1423 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1424 if (num_chars) {
1425 dbg("%s(port %d) - returns %d", __func__,
1426 port->number, num_chars);
1427 }
1428
1429 return num_chars;
1430}
1431
1432
1433/*****************************************************************************
1434 * SerialThrottle
1435 * this function is called by the tty driver when it wants to stop the data
1436 * being read from the port.
1437 *****************************************************************************/
1438static void edge_throttle(struct tty_struct *tty)
1439{
1440 struct usb_serial_port *port = tty->driver_data;
1441 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1442 int status;
1443
1444 dbg("%s - port %d", __func__, port->number);
1445
1446 if (edge_port == NULL)
1447 return;
1448
1449 if (!edge_port->open) {
1450 dbg("%s - port not opened", __func__);
1451 return;
1452 }
1453
1454 /* if we are implementing XON/XOFF, send the stop character */
1455 if (I_IXOFF(tty)) {
1456 unsigned char stop_char = STOP_CHAR(tty);
1457 status = edge_write(tty, port, &stop_char, 1);
1458 if (status <= 0)
1459 return;
1460 }
1461
1462 /* if we are implementing RTS/CTS, toggle that line */
1463 if (tty->termios->c_cflag & CRTSCTS) {
1464 edge_port->shadowMCR &= ~MCR_RTS;
1465 status = send_cmd_write_uart_register(edge_port, MCR,
1466 edge_port->shadowMCR);
1467 if (status != 0)
1468 return;
1469 }
1470}
1471
1472
1473/*****************************************************************************
1474 * edge_unthrottle
1475 * this function is called by the tty driver when it wants to resume the
1476 * data being read from the port (called after SerialThrottle is called)
1477 *****************************************************************************/
1478static void edge_unthrottle(struct tty_struct *tty)
1479{
1480 struct usb_serial_port *port = tty->driver_data;
1481 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1482 int status;
1483
1484 dbg("%s - port %d", __func__, port->number);
1485
1486 if (edge_port == NULL)
1487 return;
1488
1489 if (!edge_port->open) {
1490 dbg("%s - port not opened", __func__);
1491 return;
1492 }
1493
1494 /* if we are implementing XON/XOFF, send the start character */
1495 if (I_IXOFF(tty)) {
1496 unsigned char start_char = START_CHAR(tty);
1497 status = edge_write(tty, port, &start_char, 1);
1498 if (status <= 0)
1499 return;
1500 }
1501 /* if we are implementing RTS/CTS, toggle that line */
1502 if (tty->termios->c_cflag & CRTSCTS) {
1503 edge_port->shadowMCR |= MCR_RTS;
1504 send_cmd_write_uart_register(edge_port, MCR,
1505 edge_port->shadowMCR);
1506 }
1507}
1508
1509
1510/*****************************************************************************
1511 * SerialSetTermios
1512 * this function is called by the tty driver when it wants to change
1513 * the termios structure
1514 *****************************************************************************/
1515static void edge_set_termios(struct tty_struct *tty,
1516 struct usb_serial_port *port, struct ktermios *old_termios)
1517{
1518 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1519 unsigned int cflag;
1520
1521 cflag = tty->termios->c_cflag;
1522 dbg("%s - clfag %08x iflag %08x", __func__,
1523 tty->termios->c_cflag, tty->termios->c_iflag);
1524 dbg("%s - old clfag %08x old iflag %08x", __func__,
1525 old_termios->c_cflag, old_termios->c_iflag);
1526
1527 dbg("%s - port %d", __func__, port->number);
1528
1529 if (edge_port == NULL)
1530 return;
1531
1532 if (!edge_port->open) {
1533 dbg("%s - port not opened", __func__);
1534 return;
1535 }
1536
1537 /* change the port settings to the new ones specified */
1538 change_port_settings(tty, edge_port, old_termios);
1539}
1540
1541
1542/*****************************************************************************
1543 * get_lsr_info - get line status register info
1544 *
1545 * Purpose: Let user call ioctl() to get info when the UART physically
1546 * is emptied. On bus types like RS485, the transmitter must
1547 * release the bus after transmitting. This must be done when
1548 * the transmit shift register is empty, not be done when the
1549 * transmit holding register is empty. This functionality
1550 * allows an RS485 driver to be written in user space.
1551 *****************************************************************************/
1552static int get_lsr_info(struct edgeport_port *edge_port,
1553 unsigned int __user *value)
1554{
1555 unsigned int result = 0;
1556 unsigned long flags;
1557
1558 spin_lock_irqsave(&edge_port->ep_lock, flags);
1559 if (edge_port->maxTxCredits == edge_port->txCredits &&
1560 edge_port->txfifo.count == 0) {
1561 dbg("%s -- Empty", __func__);
1562 result = TIOCSER_TEMT;
1563 }
1564 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1565
1566 if (copy_to_user(value, &result, sizeof(int)))
1567 return -EFAULT;
1568 return 0;
1569}
1570
1571static int edge_tiocmset(struct tty_struct *tty,
1572 unsigned int set, unsigned int clear)
1573{
1574 struct usb_serial_port *port = tty->driver_data;
1575 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1576 unsigned int mcr;
1577
1578 dbg("%s - port %d", __func__, port->number);
1579
1580 mcr = edge_port->shadowMCR;
1581 if (set & TIOCM_RTS)
1582 mcr |= MCR_RTS;
1583 if (set & TIOCM_DTR)
1584 mcr |= MCR_DTR;
1585 if (set & TIOCM_LOOP)
1586 mcr |= MCR_LOOPBACK;
1587
1588 if (clear & TIOCM_RTS)
1589 mcr &= ~MCR_RTS;
1590 if (clear & TIOCM_DTR)
1591 mcr &= ~MCR_DTR;
1592 if (clear & TIOCM_LOOP)
1593 mcr &= ~MCR_LOOPBACK;
1594
1595 edge_port->shadowMCR = mcr;
1596
1597 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1598
1599 return 0;
1600}
1601
1602static int edge_tiocmget(struct tty_struct *tty)
1603{
1604 struct usb_serial_port *port = tty->driver_data;
1605 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1606 unsigned int result = 0;
1607 unsigned int msr;
1608 unsigned int mcr;
1609
1610 dbg("%s - port %d", __func__, port->number);
1611
1612 msr = edge_port->shadowMSR;
1613 mcr = edge_port->shadowMCR;
1614 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1615 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1616 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1617 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1618 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1619 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1620
1621
1622 dbg("%s -- %x", __func__, result);
1623
1624 return result;
1625}
1626
1627static int edge_get_icount(struct tty_struct *tty,
1628 struct serial_icounter_struct *icount)
1629{
1630 struct usb_serial_port *port = tty->driver_data;
1631 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1632 struct async_icount cnow;
1633 cnow = edge_port->icount;
1634
1635 icount->cts = cnow.cts;
1636 icount->dsr = cnow.dsr;
1637 icount->rng = cnow.rng;
1638 icount->dcd = cnow.dcd;
1639 icount->rx = cnow.rx;
1640 icount->tx = cnow.tx;
1641 icount->frame = cnow.frame;
1642 icount->overrun = cnow.overrun;
1643 icount->parity = cnow.parity;
1644 icount->brk = cnow.brk;
1645 icount->buf_overrun = cnow.buf_overrun;
1646
1647 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d",
1648 __func__, port->number, icount->rx, icount->tx);
1649 return 0;
1650}
1651
1652static int get_serial_info(struct edgeport_port *edge_port,
1653 struct serial_struct __user *retinfo)
1654{
1655 struct serial_struct tmp;
1656
1657 if (!retinfo)
1658 return -EFAULT;
1659
1660 memset(&tmp, 0, sizeof(tmp));
1661
1662 tmp.type = PORT_16550A;
1663 tmp.line = edge_port->port->serial->minor;
1664 tmp.port = edge_port->port->number;
1665 tmp.irq = 0;
1666 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1667 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1668 tmp.baud_base = 9600;
1669 tmp.close_delay = 5*HZ;
1670 tmp.closing_wait = 30*HZ;
1671
1672 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1673 return -EFAULT;
1674 return 0;
1675}
1676
1677
1678/*****************************************************************************
1679 * SerialIoctl
1680 * this function handles any ioctl calls to the driver
1681 *****************************************************************************/
1682static int edge_ioctl(struct tty_struct *tty,
1683 unsigned int cmd, unsigned long arg)
1684{
1685 struct usb_serial_port *port = tty->driver_data;
1686 DEFINE_WAIT(wait);
1687 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1688 struct async_icount cnow;
1689 struct async_icount cprev;
1690
1691 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
1692
1693 switch (cmd) {
1694 case TIOCSERGETLSR:
1695 dbg("%s (%d) TIOCSERGETLSR", __func__, port->number);
1696 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1697
1698 case TIOCGSERIAL:
1699 dbg("%s (%d) TIOCGSERIAL", __func__, port->number);
1700 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1701
1702 case TIOCMIWAIT:
1703 dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
1704 cprev = edge_port->icount;
1705 while (1) {
1706 prepare_to_wait(&edge_port->delta_msr_wait,
1707 &wait, TASK_INTERRUPTIBLE);
1708 schedule();
1709 finish_wait(&edge_port->delta_msr_wait, &wait);
1710 /* see if a signal did it */
1711 if (signal_pending(current))
1712 return -ERESTARTSYS;
1713 cnow = edge_port->icount;
1714 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1715 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1716 return -EIO; /* no change => error */
1717 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1718 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1719 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
1720 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
1721 return 0;
1722 }
1723 cprev = cnow;
1724 }
1725 /* NOTREACHED */
1726 break;
1727
1728 }
1729 return -ENOIOCTLCMD;
1730}
1731
1732
1733/*****************************************************************************
1734 * SerialBreak
1735 * this function sends a break to the port
1736 *****************************************************************************/
1737static void edge_break(struct tty_struct *tty, int break_state)
1738{
1739 struct usb_serial_port *port = tty->driver_data;
1740 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1741 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1742 int status;
1743
1744 if ((!edge_serial->is_epic) ||
1745 ((edge_serial->is_epic) &&
1746 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1747 /* flush and chase */
1748 edge_port->chaseResponsePending = true;
1749
1750 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__);
1751 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1752 if (status == 0) {
1753 /* block until chase finished */
1754 block_until_chase_response(edge_port);
1755 } else {
1756 edge_port->chaseResponsePending = false;
1757 }
1758 }
1759
1760 if ((!edge_serial->is_epic) ||
1761 ((edge_serial->is_epic) &&
1762 (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) {
1763 if (break_state == -1) {
1764 dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__);
1765 status = send_iosp_ext_cmd(edge_port,
1766 IOSP_CMD_SET_BREAK, 0);
1767 } else {
1768 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__);
1769 status = send_iosp_ext_cmd(edge_port,
1770 IOSP_CMD_CLEAR_BREAK, 0);
1771 }
1772 if (status)
1773 dbg("%s - error sending break set/clear command.",
1774 __func__);
1775 }
1776}
1777
1778
1779/*****************************************************************************
1780 * process_rcvd_data
1781 * this function handles the data received on the bulk in pipe.
1782 *****************************************************************************/
1783static void process_rcvd_data(struct edgeport_serial *edge_serial,
1784 unsigned char *buffer, __u16 bufferLength)
1785{
1786 struct usb_serial_port *port;
1787 struct edgeport_port *edge_port;
1788 struct tty_struct *tty;
1789 __u16 lastBufferLength;
1790 __u16 rxLen;
1791
1792 dbg("%s", __func__);
1793
1794 lastBufferLength = bufferLength + 1;
1795
1796 while (bufferLength > 0) {
1797 /* failsafe incase we get a message that we don't understand */
1798 if (lastBufferLength == bufferLength) {
1799 dbg("%s - stuck in loop, exiting it.", __func__);
1800 break;
1801 }
1802 lastBufferLength = bufferLength;
1803
1804 switch (edge_serial->rxState) {
1805 case EXPECT_HDR1:
1806 edge_serial->rxHeader1 = *buffer;
1807 ++buffer;
1808 --bufferLength;
1809
1810 if (bufferLength == 0) {
1811 edge_serial->rxState = EXPECT_HDR2;
1812 break;
1813 }
1814 /* otherwise, drop on through */
1815 case EXPECT_HDR2:
1816 edge_serial->rxHeader2 = *buffer;
1817 ++buffer;
1818 --bufferLength;
1819
1820 dbg("%s - Hdr1=%02X Hdr2=%02X", __func__,
1821 edge_serial->rxHeader1, edge_serial->rxHeader2);
1822 /* Process depending on whether this header is
1823 * data or status */
1824
1825 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1826 /* Decode this status header and go to
1827 * EXPECT_HDR1 (if we can process the status
1828 * with only 2 bytes), or go to EXPECT_HDR3 to
1829 * get the third byte. */
1830 edge_serial->rxPort =
1831 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1832 edge_serial->rxStatusCode =
1833 IOSP_GET_STATUS_CODE(
1834 edge_serial->rxHeader1);
1835
1836 if (!IOSP_STATUS_IS_2BYTE(
1837 edge_serial->rxStatusCode)) {
1838 /* This status needs additional bytes.
1839 * Save what we have and then wait for
1840 * more data.
1841 */
1842 edge_serial->rxStatusParam
1843 = edge_serial->rxHeader2;
1844 edge_serial->rxState = EXPECT_HDR3;
1845 break;
1846 }
1847 /* We have all the header bytes, process the
1848 status now */
1849 process_rcvd_status(edge_serial,
1850 edge_serial->rxHeader2, 0);
1851 edge_serial->rxState = EXPECT_HDR1;
1852 break;
1853 } else {
1854 edge_serial->rxPort =
1855 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1856 edge_serial->rxBytesRemaining =
1857 IOSP_GET_HDR_DATA_LEN(
1858 edge_serial->rxHeader1,
1859 edge_serial->rxHeader2);
1860 dbg("%s - Data for Port %u Len %u",
1861 __func__,
1862 edge_serial->rxPort,
1863 edge_serial->rxBytesRemaining);
1864
1865 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1866 * ASSERT(DevExt->RxBytesRemaining <
1867 * IOSP_MAX_DATA_LENGTH);
1868 */
1869
1870 if (bufferLength == 0) {
1871 edge_serial->rxState = EXPECT_DATA;
1872 break;
1873 }
1874 /* Else, drop through */
1875 }
1876 case EXPECT_DATA: /* Expect data */
1877 if (bufferLength < edge_serial->rxBytesRemaining) {
1878 rxLen = bufferLength;
1879 /* Expect data to start next buffer */
1880 edge_serial->rxState = EXPECT_DATA;
1881 } else {
1882 /* BufLen >= RxBytesRemaining */
1883 rxLen = edge_serial->rxBytesRemaining;
1884 /* Start another header next time */
1885 edge_serial->rxState = EXPECT_HDR1;
1886 }
1887
1888 bufferLength -= rxLen;
1889 edge_serial->rxBytesRemaining -= rxLen;
1890
1891 /* spit this data back into the tty driver if this
1892 port is open */
1893 if (rxLen) {
1894 port = edge_serial->serial->port[
1895 edge_serial->rxPort];
1896 edge_port = usb_get_serial_port_data(port);
1897 if (edge_port->open) {
1898 tty = tty_port_tty_get(
1899 &edge_port->port->port);
1900 if (tty) {
1901 dbg("%s - Sending %d bytes to TTY for port %d",
1902 __func__, rxLen, edge_serial->rxPort);
1903 edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
1904 tty_kref_put(tty);
1905 }
1906 edge_port->icount.rx += rxLen;
1907 }
1908 buffer += rxLen;
1909 }
1910 break;
1911
1912 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1913 edge_serial->rxHeader3 = *buffer;
1914 ++buffer;
1915 --bufferLength;
1916
1917 /* We have all the header bytes, process the
1918 status now */
1919 process_rcvd_status(edge_serial,
1920 edge_serial->rxStatusParam,
1921 edge_serial->rxHeader3);
1922 edge_serial->rxState = EXPECT_HDR1;
1923 break;
1924 }
1925 }
1926}
1927
1928
1929/*****************************************************************************
1930 * process_rcvd_status
1931 * this function handles the any status messages received on the
1932 * bulk in pipe.
1933 *****************************************************************************/
1934static void process_rcvd_status(struct edgeport_serial *edge_serial,
1935 __u8 byte2, __u8 byte3)
1936{
1937 struct usb_serial_port *port;
1938 struct edgeport_port *edge_port;
1939 struct tty_struct *tty;
1940 __u8 code = edge_serial->rxStatusCode;
1941
1942 /* switch the port pointer to the one being currently talked about */
1943 port = edge_serial->serial->port[edge_serial->rxPort];
1944 edge_port = usb_get_serial_port_data(port);
1945 if (edge_port == NULL) {
1946 dev_err(&edge_serial->serial->dev->dev,
1947 "%s - edge_port == NULL for port %d\n",
1948 __func__, edge_serial->rxPort);
1949 return;
1950 }
1951
1952 dbg("%s - port %d", __func__, edge_serial->rxPort);
1953
1954 if (code == IOSP_EXT_STATUS) {
1955 switch (byte2) {
1956 case IOSP_EXT_STATUS_CHASE_RSP:
1957 /* we want to do EXT status regardless of port
1958 * open/closed */
1959 dbg("%s - Port %u EXT CHASE_RSP Data = %02x",
1960 __func__, edge_serial->rxPort, byte3);
1961 /* Currently, the only EXT_STATUS is Chase, so process
1962 * here instead of one more call to one more subroutine
1963 * If/when more EXT_STATUS, there'll be more work to do
1964 * Also, we currently clear flag and close the port
1965 * regardless of content of above's Byte3.
1966 * We could choose to do something else when Byte3 says
1967 * Timeout on Chase from Edgeport, like wait longer in
1968 * block_until_chase_response, but for now we don't.
1969 */
1970 edge_port->chaseResponsePending = false;
1971 wake_up(&edge_port->wait_chase);
1972 return;
1973
1974 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1975 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============", __func__, edge_serial->rxPort, byte3);
1976 /* Port->RxCheckRsp = true; */
1977 return;
1978 }
1979 }
1980
1981 if (code == IOSP_STATUS_OPEN_RSP) {
1982 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1983 edge_port->maxTxCredits = edge_port->txCredits;
1984 dbg("%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d", __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1985 handle_new_msr(edge_port, byte2);
1986
1987 /* send the current line settings to the port so we are
1988 in sync with any further termios calls */
1989 tty = tty_port_tty_get(&edge_port->port->port);
1990 if (tty) {
1991 change_port_settings(tty,
1992 edge_port, tty->termios);
1993 tty_kref_put(tty);
1994 }
1995
1996 /* we have completed the open */
1997 edge_port->openPending = false;
1998 edge_port->open = true;
1999 wake_up(&edge_port->wait_open);
2000 return;
2001 }
2002
2003 /* If port is closed, silently discard all rcvd status. We can
2004 * have cases where buffered status is received AFTER the close
2005 * port command is sent to the Edgeport.
2006 */
2007 if (!edge_port->open || edge_port->closePending)
2008 return;
2009
2010 switch (code) {
2011 /* Not currently sent by Edgeport */
2012 case IOSP_STATUS_LSR:
2013 dbg("%s - Port %u LSR Status = %02x",
2014 __func__, edge_serial->rxPort, byte2);
2015 handle_new_lsr(edge_port, false, byte2, 0);
2016 break;
2017
2018 case IOSP_STATUS_LSR_DATA:
2019 dbg("%s - Port %u LSR Status = %02x, Data = %02x",
2020 __func__, edge_serial->rxPort, byte2, byte3);
2021 /* byte2 is LSR Register */
2022 /* byte3 is broken data byte */
2023 handle_new_lsr(edge_port, true, byte2, byte3);
2024 break;
2025 /*
2026 * case IOSP_EXT_4_STATUS:
2027 * dbg("%s - Port %u LSR Status = %02x Data = %02x",
2028 * __func__, edge_serial->rxPort, byte2, byte3);
2029 * break;
2030 */
2031 case IOSP_STATUS_MSR:
2032 dbg("%s - Port %u MSR Status = %02x",
2033 __func__, edge_serial->rxPort, byte2);
2034 /*
2035 * Process this new modem status and generate appropriate
2036 * events, etc, based on the new status. This routine
2037 * also saves the MSR in Port->ShadowMsr.
2038 */
2039 handle_new_msr(edge_port, byte2);
2040 break;
2041
2042 default:
2043 dbg("%s - Unrecognized IOSP status code %u", __func__, code);
2044 break;
2045 }
2046}
2047
2048
2049/*****************************************************************************
2050 * edge_tty_recv
2051 * this function passes data on to the tty flip buffer
2052 *****************************************************************************/
2053static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
2054 unsigned char *data, int length)
2055{
2056 int cnt;
2057
2058 cnt = tty_insert_flip_string(tty, data, length);
2059 if (cnt < length) {
2060 dev_err(dev, "%s - dropping data, %d bytes lost\n",
2061 __func__, length - cnt);
2062 }
2063 data += cnt;
2064 length -= cnt;
2065
2066 tty_flip_buffer_push(tty);
2067}
2068
2069
2070/*****************************************************************************
2071 * handle_new_msr
2072 * this function handles any change to the msr register for a port.
2073 *****************************************************************************/
2074static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2075{
2076 struct async_icount *icount;
2077
2078 dbg("%s %02x", __func__, newMsr);
2079
2080 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
2081 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2082 icount = &edge_port->icount;
2083
2084 /* update input line counters */
2085 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
2086 icount->cts++;
2087 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
2088 icount->dsr++;
2089 if (newMsr & EDGEPORT_MSR_DELTA_CD)
2090 icount->dcd++;
2091 if (newMsr & EDGEPORT_MSR_DELTA_RI)
2092 icount->rng++;
2093 wake_up_interruptible(&edge_port->delta_msr_wait);
2094 }
2095
2096 /* Save the new modem status */
2097 edge_port->shadowMSR = newMsr & 0xf0;
2098}
2099
2100
2101/*****************************************************************************
2102 * handle_new_lsr
2103 * this function handles any change to the lsr register for a port.
2104 *****************************************************************************/
2105static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
2106 __u8 lsr, __u8 data)
2107{
2108 __u8 newLsr = (__u8) (lsr & (__u8)
2109 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2110 struct async_icount *icount;
2111
2112 dbg("%s - %02x", __func__, newLsr);
2113
2114 edge_port->shadowLSR = lsr;
2115
2116 if (newLsr & LSR_BREAK) {
2117 /*
2118 * Parity and Framing errors only count if they
2119 * occur exclusive of a break being
2120 * received.
2121 */
2122 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2123 }
2124
2125 /* Place LSR data byte into Rx buffer */
2126 if (lsrData) {
2127 struct tty_struct *tty =
2128 tty_port_tty_get(&edge_port->port->port);
2129 if (tty) {
2130 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
2131 tty_kref_put(tty);
2132 }
2133 }
2134 /* update input line counters */
2135 icount = &edge_port->icount;
2136 if (newLsr & LSR_BREAK)
2137 icount->brk++;
2138 if (newLsr & LSR_OVER_ERR)
2139 icount->overrun++;
2140 if (newLsr & LSR_PAR_ERR)
2141 icount->parity++;
2142 if (newLsr & LSR_FRM_ERR)
2143 icount->frame++;
2144}
2145
2146
2147/****************************************************************************
2148 * sram_write
2149 * writes a number of bytes to the Edgeport device's sram starting at the
2150 * given address.
2151 * If successful returns the number of bytes written, otherwise it returns
2152 * a negative error number of the problem.
2153 ****************************************************************************/
2154static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2155 __u16 length, const __u8 *data)
2156{
2157 int result;
2158 __u16 current_length;
2159 unsigned char *transfer_buffer;
2160
2161 dbg("%s - %x, %x, %d", __func__, extAddr, addr, length);
2162
2163 transfer_buffer = kmalloc(64, GFP_KERNEL);
2164 if (!transfer_buffer) {
2165 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
2166 __func__, 64);
2167 return -ENOMEM;
2168 }
2169
2170 /* need to split these writes up into 64 byte chunks */
2171 result = 0;
2172 while (length > 0) {
2173 if (length > 64)
2174 current_length = 64;
2175 else
2176 current_length = length;
2177
2178/* dbg("%s - writing %x, %x, %d", __func__,
2179 extAddr, addr, current_length); */
2180 memcpy(transfer_buffer, data, current_length);
2181 result = usb_control_msg(serial->dev,
2182 usb_sndctrlpipe(serial->dev, 0),
2183 USB_REQUEST_ION_WRITE_RAM,
2184 0x40, addr, extAddr, transfer_buffer,
2185 current_length, 300);
2186 if (result < 0)
2187 break;
2188 length -= current_length;
2189 addr += current_length;
2190 data += current_length;
2191 }
2192
2193 kfree(transfer_buffer);
2194 return result;
2195}
2196
2197
2198/****************************************************************************
2199 * rom_write
2200 * writes a number of bytes to the Edgeport device's ROM starting at the
2201 * given address.
2202 * If successful returns the number of bytes written, otherwise it returns
2203 * a negative error number of the problem.
2204 ****************************************************************************/
2205static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2206 __u16 length, const __u8 *data)
2207{
2208 int result;
2209 __u16 current_length;
2210 unsigned char *transfer_buffer;
2211
2212/* dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); */
2213
2214 transfer_buffer = kmalloc(64, GFP_KERNEL);
2215 if (!transfer_buffer) {
2216 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
2217 __func__, 64);
2218 return -ENOMEM;
2219 }
2220
2221 /* need to split these writes up into 64 byte chunks */
2222 result = 0;
2223 while (length > 0) {
2224 if (length > 64)
2225 current_length = 64;
2226 else
2227 current_length = length;
2228/* dbg("%s - writing %x, %x, %d", __func__,
2229 extAddr, addr, current_length); */
2230 memcpy(transfer_buffer, data, current_length);
2231 result = usb_control_msg(serial->dev,
2232 usb_sndctrlpipe(serial->dev, 0),
2233 USB_REQUEST_ION_WRITE_ROM, 0x40,
2234 addr, extAddr,
2235 transfer_buffer, current_length, 300);
2236 if (result < 0)
2237 break;
2238 length -= current_length;
2239 addr += current_length;
2240 data += current_length;
2241 }
2242
2243 kfree(transfer_buffer);
2244 return result;
2245}
2246
2247
2248/****************************************************************************
2249 * rom_read
2250 * reads a number of bytes from the Edgeport device starting at the given
2251 * address.
2252 * If successful returns the number of bytes read, otherwise it returns
2253 * a negative error number of the problem.
2254 ****************************************************************************/
2255static int rom_read(struct usb_serial *serial, __u16 extAddr,
2256 __u16 addr, __u16 length, __u8 *data)
2257{
2258 int result;
2259 __u16 current_length;
2260 unsigned char *transfer_buffer;
2261
2262 dbg("%s - %x, %x, %d", __func__, extAddr, addr, length);
2263
2264 transfer_buffer = kmalloc(64, GFP_KERNEL);
2265 if (!transfer_buffer) {
2266 dev_err(&serial->dev->dev,
2267 "%s - kmalloc(%d) failed.\n", __func__, 64);
2268 return -ENOMEM;
2269 }
2270
2271 /* need to split these reads up into 64 byte chunks */
2272 result = 0;
2273 while (length > 0) {
2274 if (length > 64)
2275 current_length = 64;
2276 else
2277 current_length = length;
2278/* dbg("%s - %x, %x, %d", __func__,
2279 extAddr, addr, current_length); */
2280 result = usb_control_msg(serial->dev,
2281 usb_rcvctrlpipe(serial->dev, 0),
2282 USB_REQUEST_ION_READ_ROM,
2283 0xC0, addr, extAddr, transfer_buffer,
2284 current_length, 300);
2285 if (result < 0)
2286 break;
2287 memcpy(data, transfer_buffer, current_length);
2288 length -= current_length;
2289 addr += current_length;
2290 data += current_length;
2291 }
2292
2293 kfree(transfer_buffer);
2294 return result;
2295}
2296
2297
2298/****************************************************************************
2299 * send_iosp_ext_cmd
2300 * Is used to send a IOSP message to the Edgeport device
2301 ****************************************************************************/
2302static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2303 __u8 command, __u8 param)
2304{
2305 unsigned char *buffer;
2306 unsigned char *currentCommand;
2307 int length = 0;
2308 int status = 0;
2309
2310 dbg("%s - %d, %d", __func__, command, param);
2311
2312 buffer = kmalloc(10, GFP_ATOMIC);
2313 if (!buffer) {
2314 dev_err(&edge_port->port->dev,
2315 "%s - kmalloc(%d) failed.\n", __func__, 10);
2316 return -ENOMEM;
2317 }
2318
2319 currentCommand = buffer;
2320
2321 MAKE_CMD_EXT_CMD(¤tCommand, &length,
2322 edge_port->port->number - edge_port->port->serial->minor,
2323 command, param);
2324
2325 status = write_cmd_usb(edge_port, buffer, length);
2326 if (status) {
2327 /* something bad happened, let's free up the memory */
2328 kfree(buffer);
2329 }
2330
2331 return status;
2332}
2333
2334
2335/*****************************************************************************
2336 * write_cmd_usb
2337 * this function writes the given buffer out to the bulk write endpoint.
2338 *****************************************************************************/
2339static int write_cmd_usb(struct edgeport_port *edge_port,
2340 unsigned char *buffer, int length)
2341{
2342 struct edgeport_serial *edge_serial =
2343 usb_get_serial_data(edge_port->port->serial);
2344 int status = 0;
2345 struct urb *urb;
2346
2347 usb_serial_debug_data(debug, &edge_port->port->dev,
2348 __func__, length, buffer);
2349
2350 /* Allocate our next urb */
2351 urb = usb_alloc_urb(0, GFP_ATOMIC);
2352 if (!urb)
2353 return -ENOMEM;
2354
2355 atomic_inc(&CmdUrbs);
2356 dbg("%s - ALLOCATE URB %p (outstanding %d)",
2357 __func__, urb, atomic_read(&CmdUrbs));
2358
2359 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2360 usb_sndbulkpipe(edge_serial->serial->dev,
2361 edge_serial->bulk_out_endpoint),
2362 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2363
2364 edge_port->commandPending = true;
2365 status = usb_submit_urb(urb, GFP_ATOMIC);
2366
2367 if (status) {
2368 /* something went wrong */
2369 dev_err(&edge_port->port->dev,
2370 "%s - usb_submit_urb(write command) failed, status = %d\n",
2371 __func__, status);
2372 usb_kill_urb(urb);
2373 usb_free_urb(urb);
2374 atomic_dec(&CmdUrbs);
2375 return status;
2376 }
2377
2378#if 0
2379 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2380
2381 if (edge_port->commandPending) {
2382 /* command timed out */
2383 dbg("%s - command timed out", __func__);
2384 status = -EINVAL;
2385 }
2386#endif
2387 return status;
2388}
2389
2390
2391/*****************************************************************************
2392 * send_cmd_write_baud_rate
2393 * this function sends the proper command to change the baud rate of the
2394 * specified port.
2395 *****************************************************************************/
2396static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2397 int baudRate)
2398{
2399 struct edgeport_serial *edge_serial =
2400 usb_get_serial_data(edge_port->port->serial);
2401 unsigned char *cmdBuffer;
2402 unsigned char *currCmd;
2403 int cmdLen = 0;
2404 int divisor;
2405 int status;
2406 unsigned char number =
2407 edge_port->port->number - edge_port->port->serial->minor;
2408
2409 if (edge_serial->is_epic &&
2410 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2411 dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d",
2412 edge_port->port->number, baudRate);
2413 return 0;
2414 }
2415
2416 dbg("%s - port = %d, baud = %d", __func__,
2417 edge_port->port->number, baudRate);
2418
2419 status = calc_baud_rate_divisor(baudRate, &divisor);
2420 if (status) {
2421 dev_err(&edge_port->port->dev, "%s - bad baud rate\n",
2422 __func__);
2423 return status;
2424 }
2425
2426 /* Alloc memory for the string of commands. */
2427 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2428 if (!cmdBuffer) {
2429 dev_err(&edge_port->port->dev,
2430 "%s - kmalloc(%d) failed.\n", __func__, 0x100);
2431 return -ENOMEM;
2432 }
2433 currCmd = cmdBuffer;
2434
2435 /* Enable access to divisor latch */
2436 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2437
2438 /* Write the divisor itself */
2439 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2440 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2441
2442 /* Restore original value to disable access to divisor latch */
2443 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2444 edge_port->shadowLCR);
2445
2446 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2447 if (status) {
2448 /* something bad happened, let's free up the memory */
2449 kfree(cmdBuffer);
2450 }
2451
2452 return status;
2453}
2454
2455
2456/*****************************************************************************
2457 * calc_baud_rate_divisor
2458 * this function calculates the proper baud rate divisor for the specified
2459 * baud rate.
2460 *****************************************************************************/
2461static int calc_baud_rate_divisor(int baudrate, int *divisor)
2462{
2463 int i;
2464 __u16 custom;
2465
2466
2467 dbg("%s - %d", __func__, baudrate);
2468
2469 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2470 if (divisor_table[i].BaudRate == baudrate) {
2471 *divisor = divisor_table[i].Divisor;
2472 return 0;
2473 }
2474 }
2475
2476 /* We have tried all of the standard baud rates
2477 * lets try to calculate the divisor for this baud rate
2478 * Make sure the baud rate is reasonable */
2479 if (baudrate > 50 && baudrate < 230400) {
2480 /* get divisor */
2481 custom = (__u16)((230400L + baudrate/2) / baudrate);
2482
2483 *divisor = custom;
2484
2485 dbg("%s - Baud %d = %d", __func__, baudrate, custom);
2486 return 0;
2487 }
2488
2489 return -1;
2490}
2491
2492
2493/*****************************************************************************
2494 * send_cmd_write_uart_register
2495 * this function builds up a uart register message and sends to the device.
2496 *****************************************************************************/
2497static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2498 __u8 regNum, __u8 regValue)
2499{
2500 struct edgeport_serial *edge_serial =
2501 usb_get_serial_data(edge_port->port->serial);
2502 unsigned char *cmdBuffer;
2503 unsigned char *currCmd;
2504 unsigned long cmdLen = 0;
2505 int status;
2506
2507 dbg("%s - write to %s register 0x%02x",
2508 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2509
2510 if (edge_serial->is_epic &&
2511 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2512 regNum == MCR) {
2513 dbg("SendCmdWriteUartReg - Not writing to MCR Register");
2514 return 0;
2515 }
2516
2517 if (edge_serial->is_epic &&
2518 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2519 regNum == LCR) {
2520 dbg("SendCmdWriteUartReg - Not writing to LCR Register");
2521 return 0;
2522 }
2523
2524 /* Alloc memory for the string of commands. */
2525 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2526 if (cmdBuffer == NULL)
2527 return -ENOMEM;
2528
2529 currCmd = cmdBuffer;
2530
2531 /* Build a cmd in the buffer to write the given register */
2532 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen,
2533 edge_port->port->number - edge_port->port->serial->minor,
2534 regNum, regValue);
2535
2536 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2537 if (status) {
2538 /* something bad happened, let's free up the memory */
2539 kfree(cmdBuffer);
2540 }
2541
2542 return status;
2543}
2544
2545
2546/*****************************************************************************
2547 * change_port_settings
2548 * This routine is called to set the UART on the device to match the
2549 * specified new settings.
2550 *****************************************************************************/
2551
2552static void change_port_settings(struct tty_struct *tty,
2553 struct edgeport_port *edge_port, struct ktermios *old_termios)
2554{
2555 struct edgeport_serial *edge_serial =
2556 usb_get_serial_data(edge_port->port->serial);
2557 int baud;
2558 unsigned cflag;
2559 __u8 mask = 0xff;
2560 __u8 lData;
2561 __u8 lParity;
2562 __u8 lStop;
2563 __u8 rxFlow;
2564 __u8 txFlow;
2565 int status;
2566
2567 dbg("%s - port %d", __func__, edge_port->port->number);
2568
2569 if (!edge_port->open &&
2570 !edge_port->openPending) {
2571 dbg("%s - port not opened", __func__);
2572 return;
2573 }
2574
2575 cflag = tty->termios->c_cflag;
2576
2577 switch (cflag & CSIZE) {
2578 case CS5:
2579 lData = LCR_BITS_5; mask = 0x1f;
2580 dbg("%s - data bits = 5", __func__);
2581 break;
2582 case CS6:
2583 lData = LCR_BITS_6; mask = 0x3f;
2584 dbg("%s - data bits = 6", __func__);
2585 break;
2586 case CS7:
2587 lData = LCR_BITS_7; mask = 0x7f;
2588 dbg("%s - data bits = 7", __func__);
2589 break;
2590 default:
2591 case CS8:
2592 lData = LCR_BITS_8;
2593 dbg("%s - data bits = 8", __func__);
2594 break;
2595 }
2596
2597 lParity = LCR_PAR_NONE;
2598 if (cflag & PARENB) {
2599 if (cflag & CMSPAR) {
2600 if (cflag & PARODD) {
2601 lParity = LCR_PAR_MARK;
2602 dbg("%s - parity = mark", __func__);
2603 } else {
2604 lParity = LCR_PAR_SPACE;
2605 dbg("%s - parity = space", __func__);
2606 }
2607 } else if (cflag & PARODD) {
2608 lParity = LCR_PAR_ODD;
2609 dbg("%s - parity = odd", __func__);
2610 } else {
2611 lParity = LCR_PAR_EVEN;
2612 dbg("%s - parity = even", __func__);
2613 }
2614 } else {
2615 dbg("%s - parity = none", __func__);
2616 }
2617
2618 if (cflag & CSTOPB) {
2619 lStop = LCR_STOP_2;
2620 dbg("%s - stop bits = 2", __func__);
2621 } else {
2622 lStop = LCR_STOP_1;
2623 dbg("%s - stop bits = 1", __func__);
2624 }
2625
2626 /* figure out the flow control settings */
2627 rxFlow = txFlow = 0x00;
2628 if (cflag & CRTSCTS) {
2629 rxFlow |= IOSP_RX_FLOW_RTS;
2630 txFlow |= IOSP_TX_FLOW_CTS;
2631 dbg("%s - RTS/CTS is enabled", __func__);
2632 } else {
2633 dbg("%s - RTS/CTS is disabled", __func__);
2634 }
2635
2636 /* if we are implementing XON/XOFF, set the start and stop character
2637 in the device */
2638 if (I_IXOFF(tty) || I_IXON(tty)) {
2639 unsigned char stop_char = STOP_CHAR(tty);
2640 unsigned char start_char = START_CHAR(tty);
2641
2642 if ((!edge_serial->is_epic) ||
2643 ((edge_serial->is_epic) &&
2644 (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) {
2645 send_iosp_ext_cmd(edge_port,
2646 IOSP_CMD_SET_XON_CHAR, start_char);
2647 send_iosp_ext_cmd(edge_port,
2648 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2649 }
2650
2651 /* if we are implementing INBOUND XON/XOFF */
2652 if (I_IXOFF(tty)) {
2653 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2654 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2655 __func__, start_char, stop_char);
2656 } else {
2657 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2658 }
2659
2660 /* if we are implementing OUTBOUND XON/XOFF */
2661 if (I_IXON(tty)) {
2662 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2663 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2664 __func__, start_char, stop_char);
2665 } else {
2666 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2667 }
2668 }
2669
2670 /* Set flow control to the configured value */
2671 if ((!edge_serial->is_epic) ||
2672 ((edge_serial->is_epic) &&
2673 (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)))
2674 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2675 if ((!edge_serial->is_epic) ||
2676 ((edge_serial->is_epic) &&
2677 (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)))
2678 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2679
2680
2681 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2682 edge_port->shadowLCR |= (lData | lParity | lStop);
2683
2684 edge_port->validDataMask = mask;
2685
2686 /* Send the updated LCR value to the EdgePort */
2687 status = send_cmd_write_uart_register(edge_port, LCR,
2688 edge_port->shadowLCR);
2689 if (status != 0)
2690 return;
2691
2692 /* set up the MCR register and send it to the EdgePort */
2693 edge_port->shadowMCR = MCR_MASTER_IE;
2694 if (cflag & CBAUD)
2695 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2696
2697 status = send_cmd_write_uart_register(edge_port, MCR,
2698 edge_port->shadowMCR);
2699 if (status != 0)
2700 return;
2701
2702 /* Determine divisor based on baud rate */
2703 baud = tty_get_baud_rate(tty);
2704 if (!baud) {
2705 /* pick a default, any default... */
2706 baud = 9600;
2707 }
2708
2709 dbg("%s - baud rate = %d", __func__, baud);
2710 status = send_cmd_write_baud_rate(edge_port, baud);
2711 if (status == -1) {
2712 /* Speed change was not possible - put back the old speed */
2713 baud = tty_termios_baud_rate(old_termios);
2714 tty_encode_baud_rate(tty, baud, baud);
2715 }
2716}
2717
2718
2719/****************************************************************************
2720 * unicode_to_ascii
2721 * Turns a string from Unicode into ASCII.
2722 * Doesn't do a good job with any characters that are outside the normal
2723 * ASCII range, but it's only for debugging...
2724 * NOTE: expects the unicode in LE format
2725 ****************************************************************************/
2726static void unicode_to_ascii(char *string, int buflen,
2727 __le16 *unicode, int unicode_size)
2728{
2729 int i;
2730
2731 if (buflen <= 0) /* never happens, but... */
2732 return;
2733 --buflen; /* space for nul */
2734
2735 for (i = 0; i < unicode_size; i++) {
2736 if (i >= buflen)
2737 break;
2738 string[i] = (char)(le16_to_cpu(unicode[i]));
2739 }
2740 string[i] = 0x00;
2741}
2742
2743
2744/****************************************************************************
2745 * get_manufacturing_desc
2746 * reads in the manufacturing descriptor and stores it into the serial
2747 * structure.
2748 ****************************************************************************/
2749static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2750{
2751 int response;
2752
2753 dbg("getting manufacturer descriptor");
2754
2755 response = rom_read(edge_serial->serial,
2756 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2757 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2758 EDGE_MANUF_DESC_LEN,
2759 (__u8 *)(&edge_serial->manuf_descriptor));
2760
2761 if (response < 1)
2762 dev_err(&edge_serial->serial->dev->dev,
2763 "error in getting manufacturer descriptor\n");
2764 else {
2765 char string[30];
2766 dbg("**Manufacturer Descriptor");
2767 dbg(" RomSize: %dK",
2768 edge_serial->manuf_descriptor.RomSize);
2769 dbg(" RamSize: %dK",
2770 edge_serial->manuf_descriptor.RamSize);
2771 dbg(" CpuRev: %d",
2772 edge_serial->manuf_descriptor.CpuRev);
2773 dbg(" BoardRev: %d",
2774 edge_serial->manuf_descriptor.BoardRev);
2775 dbg(" NumPorts: %d",
2776 edge_serial->manuf_descriptor.NumPorts);
2777 dbg(" DescDate: %d/%d/%d",
2778 edge_serial->manuf_descriptor.DescDate[0],
2779 edge_serial->manuf_descriptor.DescDate[1],
2780 edge_serial->manuf_descriptor.DescDate[2]+1900);
2781 unicode_to_ascii(string, sizeof(string),
2782 edge_serial->manuf_descriptor.SerialNumber,
2783 edge_serial->manuf_descriptor.SerNumLength/2);
2784 dbg(" SerialNumber: %s", string);
2785 unicode_to_ascii(string, sizeof(string),
2786 edge_serial->manuf_descriptor.AssemblyNumber,
2787 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2788 dbg(" AssemblyNumber: %s", string);
2789 unicode_to_ascii(string, sizeof(string),
2790 edge_serial->manuf_descriptor.OemAssyNumber,
2791 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2792 dbg(" OemAssyNumber: %s", string);
2793 dbg(" UartType: %d",
2794 edge_serial->manuf_descriptor.UartType);
2795 dbg(" IonPid: %d",
2796 edge_serial->manuf_descriptor.IonPid);
2797 dbg(" IonConfig: %d",
2798 edge_serial->manuf_descriptor.IonConfig);
2799 }
2800}
2801
2802
2803/****************************************************************************
2804 * get_boot_desc
2805 * reads in the bootloader descriptor and stores it into the serial
2806 * structure.
2807 ****************************************************************************/
2808static void get_boot_desc(struct edgeport_serial *edge_serial)
2809{
2810 int response;
2811
2812 dbg("getting boot descriptor");
2813
2814 response = rom_read(edge_serial->serial,
2815 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2816 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2817 EDGE_BOOT_DESC_LEN,
2818 (__u8 *)(&edge_serial->boot_descriptor));
2819
2820 if (response < 1)
2821 dev_err(&edge_serial->serial->dev->dev,
2822 "error in getting boot descriptor\n");
2823 else {
2824 dbg("**Boot Descriptor:");
2825 dbg(" BootCodeLength: %d",
2826 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2827 dbg(" MajorVersion: %d",
2828 edge_serial->boot_descriptor.MajorVersion);
2829 dbg(" MinorVersion: %d",
2830 edge_serial->boot_descriptor.MinorVersion);
2831 dbg(" BuildNumber: %d",
2832 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2833 dbg(" Capabilities: 0x%x",
2834 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2835 dbg(" UConfig0: %d",
2836 edge_serial->boot_descriptor.UConfig0);
2837 dbg(" UConfig1: %d",
2838 edge_serial->boot_descriptor.UConfig1);
2839 }
2840}
2841
2842
2843/****************************************************************************
2844 * load_application_firmware
2845 * This is called to load the application firmware to the device
2846 ****************************************************************************/
2847static void load_application_firmware(struct edgeport_serial *edge_serial)
2848{
2849 const struct ihex_binrec *rec;
2850 const struct firmware *fw;
2851 const char *fw_name;
2852 const char *fw_info;
2853 int response;
2854 __u32 Operaddr;
2855 __u16 build;
2856
2857 switch (edge_serial->product_info.iDownloadFile) {
2858 case EDGE_DOWNLOAD_FILE_I930:
2859 fw_info = "downloading firmware version (930)";
2860 fw_name = "edgeport/down.fw";
2861 break;
2862
2863 case EDGE_DOWNLOAD_FILE_80251:
2864 fw_info = "downloading firmware version (80251)";
2865 fw_name = "edgeport/down2.fw";
2866 break;
2867
2868 case EDGE_DOWNLOAD_FILE_NONE:
2869 dbg("No download file specified, skipping download");
2870 return;
2871
2872 default:
2873 return;
2874 }
2875
2876 response = request_ihex_firmware(&fw, fw_name,
2877 &edge_serial->serial->dev->dev);
2878 if (response) {
2879 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
2880 fw_name, response);
2881 return;
2882 }
2883
2884 rec = (const struct ihex_binrec *)fw->data;
2885 build = (rec->data[2] << 8) | rec->data[3];
2886
2887 dbg("%s %d.%d.%d", fw_info, rec->data[0], rec->data[1], build);
2888
2889 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2890 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2891 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2892
2893 for (rec = ihex_next_binrec(rec); rec;
2894 rec = ihex_next_binrec(rec)) {
2895 Operaddr = be32_to_cpu(rec->addr);
2896 response = sram_write(edge_serial->serial,
2897 Operaddr >> 16,
2898 Operaddr & 0xFFFF,
2899 be16_to_cpu(rec->len),
2900 &rec->data[0]);
2901 if (response < 0) {
2902 dev_err(&edge_serial->serial->dev->dev,
2903 "sram_write failed (%x, %x, %d)\n",
2904 Operaddr >> 16, Operaddr & 0xFFFF,
2905 be16_to_cpu(rec->len));
2906 break;
2907 }
2908 }
2909
2910 dbg("sending exec_dl_code");
2911 response = usb_control_msg (edge_serial->serial->dev,
2912 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2913 USB_REQUEST_ION_EXEC_DL_CODE,
2914 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2915
2916 release_firmware(fw);
2917}
2918
2919
2920/****************************************************************************
2921 * edge_startup
2922 ****************************************************************************/
2923static int edge_startup(struct usb_serial *serial)
2924{
2925 struct edgeport_serial *edge_serial;
2926 struct edgeport_port *edge_port;
2927 struct usb_device *dev;
2928 int i, j;
2929 int response;
2930 bool interrupt_in_found;
2931 bool bulk_in_found;
2932 bool bulk_out_found;
2933 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2934 EDGE_COMPATIBILITY_MASK1,
2935 EDGE_COMPATIBILITY_MASK2 };
2936
2937 dev = serial->dev;
2938
2939 /* create our private serial structure */
2940 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2941 if (edge_serial == NULL) {
2942 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2943 return -ENOMEM;
2944 }
2945 spin_lock_init(&edge_serial->es_lock);
2946 edge_serial->serial = serial;
2947 usb_set_serial_data(serial, edge_serial);
2948
2949 /* get the name for the device from the device */
2950 i = usb_string(dev, dev->descriptor.iManufacturer,
2951 &edge_serial->name[0], MAX_NAME_LEN+1);
2952 if (i < 0)
2953 i = 0;
2954 edge_serial->name[i++] = ' ';
2955 usb_string(dev, dev->descriptor.iProduct,
2956 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2957
2958 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2959
2960 /* Read the epic descriptor */
2961 if (get_epic_descriptor(edge_serial) <= 0) {
2962 /* memcpy descriptor to Supports structures */
2963 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2964 sizeof(struct edge_compatibility_bits));
2965
2966 /* get the manufacturing descriptor for this device */
2967 get_manufacturing_desc(edge_serial);
2968
2969 /* get the boot descriptor */
2970 get_boot_desc(edge_serial);
2971
2972 get_product_info(edge_serial);
2973 }
2974
2975 /* set the number of ports from the manufacturing description */
2976 /* serial->num_ports = serial->product_info.NumPorts; */
2977 if ((!edge_serial->is_epic) &&
2978 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2979 dev_warn(&serial->dev->dev, "Device Reported %d serial ports "
2980 "vs. core thinking we have %d ports, email "
2981 "greg@kroah.com this information.\n",
2982 edge_serial->product_info.NumPorts,
2983 serial->num_ports);
2984 }
2985
2986 dbg("%s - time 1 %ld", __func__, jiffies);
2987
2988 /* If not an EPiC device */
2989 if (!edge_serial->is_epic) {
2990 /* now load the application firmware into this device */
2991 load_application_firmware(edge_serial);
2992
2993 dbg("%s - time 2 %ld", __func__, jiffies);
2994
2995 /* Check current Edgeport EEPROM and update if necessary */
2996 update_edgeport_E2PROM(edge_serial);
2997
2998 dbg("%s - time 3 %ld", __func__, jiffies);
2999
3000 /* set the configuration to use #1 */
3001/* dbg("set_configuration 1"); */
3002/* usb_set_configuration (dev, 1); */
3003 }
3004 dbg(" FirmwareMajorVersion %d.%d.%d",
3005 edge_serial->product_info.FirmwareMajorVersion,
3006 edge_serial->product_info.FirmwareMinorVersion,
3007 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
3008
3009 /* we set up the pointers to the endpoints in the edge_open function,
3010 * as the structures aren't created yet. */
3011
3012 /* set up our port private structures */
3013 for (i = 0; i < serial->num_ports; ++i) {
3014 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
3015 if (edge_port == NULL) {
3016 dev_err(&serial->dev->dev, "%s - Out of memory\n",
3017 __func__);
3018 for (j = 0; j < i; ++j) {
3019 kfree(usb_get_serial_port_data(serial->port[j]));
3020 usb_set_serial_port_data(serial->port[j],
3021 NULL);
3022 }
3023 usb_set_serial_data(serial, NULL);
3024 kfree(edge_serial);
3025 return -ENOMEM;
3026 }
3027 spin_lock_init(&edge_port->ep_lock);
3028 edge_port->port = serial->port[i];
3029 usb_set_serial_port_data(serial->port[i], edge_port);
3030 }
3031
3032 response = 0;
3033
3034 if (edge_serial->is_epic) {
3035 /* EPIC thing, set up our interrupt polling now and our read
3036 * urb, so that the device knows it really is connected. */
3037 interrupt_in_found = bulk_in_found = bulk_out_found = false;
3038 for (i = 0; i < serial->interface->altsetting[0]
3039 .desc.bNumEndpoints; ++i) {
3040 struct usb_endpoint_descriptor *endpoint;
3041 int buffer_size;
3042
3043 endpoint = &serial->interface->altsetting[0].
3044 endpoint[i].desc;
3045 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
3046 if (!interrupt_in_found &&
3047 (usb_endpoint_is_int_in(endpoint))) {
3048 /* we found a interrupt in endpoint */
3049 dbg("found interrupt in");
3050
3051 /* not set up yet, so do it now */
3052 edge_serial->interrupt_read_urb =
3053 usb_alloc_urb(0, GFP_KERNEL);
3054 if (!edge_serial->interrupt_read_urb) {
3055 dev_err(&dev->dev, "out of memory\n");
3056 return -ENOMEM;
3057 }
3058 edge_serial->interrupt_in_buffer =
3059 kmalloc(buffer_size, GFP_KERNEL);
3060 if (!edge_serial->interrupt_in_buffer) {
3061 dev_err(&dev->dev, "out of memory\n");
3062 usb_free_urb(edge_serial->interrupt_read_urb);
3063 return -ENOMEM;
3064 }
3065 edge_serial->interrupt_in_endpoint =
3066 endpoint->bEndpointAddress;
3067
3068 /* set up our interrupt urb */
3069 usb_fill_int_urb(
3070 edge_serial->interrupt_read_urb,
3071 dev,
3072 usb_rcvintpipe(dev,
3073 endpoint->bEndpointAddress),
3074 edge_serial->interrupt_in_buffer,
3075 buffer_size,
3076 edge_interrupt_callback,
3077 edge_serial,
3078 endpoint->bInterval);
3079
3080 interrupt_in_found = true;
3081 }
3082
3083 if (!bulk_in_found &&
3084 (usb_endpoint_is_bulk_in(endpoint))) {
3085 /* we found a bulk in endpoint */
3086 dbg("found bulk in");
3087
3088 /* not set up yet, so do it now */
3089 edge_serial->read_urb =
3090 usb_alloc_urb(0, GFP_KERNEL);
3091 if (!edge_serial->read_urb) {
3092 dev_err(&dev->dev, "out of memory\n");
3093 return -ENOMEM;
3094 }
3095 edge_serial->bulk_in_buffer =
3096 kmalloc(buffer_size, GFP_KERNEL);
3097 if (!edge_serial->bulk_in_buffer) {
3098 dev_err(&dev->dev, "out of memory\n");
3099 usb_free_urb(edge_serial->read_urb);
3100 return -ENOMEM;
3101 }
3102 edge_serial->bulk_in_endpoint =
3103 endpoint->bEndpointAddress;
3104
3105 /* set up our bulk in urb */
3106 usb_fill_bulk_urb(edge_serial->read_urb, dev,
3107 usb_rcvbulkpipe(dev,
3108 endpoint->bEndpointAddress),
3109 edge_serial->bulk_in_buffer,
3110 le16_to_cpu(endpoint->wMaxPacketSize),
3111 edge_bulk_in_callback,
3112 edge_serial);
3113 bulk_in_found = true;
3114 }
3115
3116 if (!bulk_out_found &&
3117 (usb_endpoint_is_bulk_out(endpoint))) {
3118 /* we found a bulk out endpoint */
3119 dbg("found bulk out");
3120 edge_serial->bulk_out_endpoint =
3121 endpoint->bEndpointAddress;
3122 bulk_out_found = true;
3123 }
3124 }
3125
3126 if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
3127 dev_err(&dev->dev, "Error - the proper endpoints "
3128 "were not found!\n");
3129 return -ENODEV;
3130 }
3131
3132 /* start interrupt read for this edgeport this interrupt will
3133 * continue as long as the edgeport is connected */
3134 response = usb_submit_urb(edge_serial->interrupt_read_urb,
3135 GFP_KERNEL);
3136 if (response)
3137 dev_err(&dev->dev,
3138 "%s - Error %d submitting control urb\n",
3139 __func__, response);
3140 }
3141 return response;
3142}
3143
3144
3145/****************************************************************************
3146 * edge_disconnect
3147 * This function is called whenever the device is removed from the usb bus.
3148 ****************************************************************************/
3149static void edge_disconnect(struct usb_serial *serial)
3150{
3151 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3152
3153 dbg("%s", __func__);
3154
3155 /* stop reads and writes on all ports */
3156 /* free up our endpoint stuff */
3157 if (edge_serial->is_epic) {
3158 usb_kill_urb(edge_serial->interrupt_read_urb);
3159 usb_free_urb(edge_serial->interrupt_read_urb);
3160 kfree(edge_serial->interrupt_in_buffer);
3161
3162 usb_kill_urb(edge_serial->read_urb);
3163 usb_free_urb(edge_serial->read_urb);
3164 kfree(edge_serial->bulk_in_buffer);
3165 }
3166}
3167
3168
3169/****************************************************************************
3170 * edge_release
3171 * This function is called when the device structure is deallocated.
3172 ****************************************************************************/
3173static void edge_release(struct usb_serial *serial)
3174{
3175 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3176 int i;
3177
3178 dbg("%s", __func__);
3179
3180 for (i = 0; i < serial->num_ports; ++i)
3181 kfree(usb_get_serial_port_data(serial->port[i]));
3182
3183 kfree(edge_serial);
3184}
3185
3186
3187/****************************************************************************
3188 * edgeport_init
3189 * This is called by the module subsystem, or on startup to initialize us
3190 ****************************************************************************/
3191static int __init edgeport_init(void)
3192{
3193 int retval;
3194
3195 retval = usb_serial_register(&edgeport_2port_device);
3196 if (retval)
3197 goto failed_2port_device_register;
3198 retval = usb_serial_register(&edgeport_4port_device);
3199 if (retval)
3200 goto failed_4port_device_register;
3201 retval = usb_serial_register(&edgeport_8port_device);
3202 if (retval)
3203 goto failed_8port_device_register;
3204 retval = usb_serial_register(&epic_device);
3205 if (retval)
3206 goto failed_epic_device_register;
3207 retval = usb_register(&io_driver);
3208 if (retval)
3209 goto failed_usb_register;
3210 atomic_set(&CmdUrbs, 0);
3211 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
3212 DRIVER_DESC "\n");
3213 return 0;
3214
3215failed_usb_register:
3216 usb_serial_deregister(&epic_device);
3217failed_epic_device_register:
3218 usb_serial_deregister(&edgeport_8port_device);
3219failed_8port_device_register:
3220 usb_serial_deregister(&edgeport_4port_device);
3221failed_4port_device_register:
3222 usb_serial_deregister(&edgeport_2port_device);
3223failed_2port_device_register:
3224 return retval;
3225}
3226
3227
3228/****************************************************************************
3229 * edgeport_exit
3230 * Called when the driver is about to be unloaded.
3231 ****************************************************************************/
3232static void __exit edgeport_exit (void)
3233{
3234 usb_deregister(&io_driver);
3235 usb_serial_deregister(&edgeport_2port_device);
3236 usb_serial_deregister(&edgeport_4port_device);
3237 usb_serial_deregister(&edgeport_8port_device);
3238 usb_serial_deregister(&epic_device);
3239}
3240
3241module_init(edgeport_init);
3242module_exit(edgeport_exit);
3243
3244/* Module information */
3245MODULE_AUTHOR(DRIVER_AUTHOR);
3246MODULE_DESCRIPTION(DRIVER_DESC);
3247MODULE_LICENSE("GPL");
3248MODULE_FIRMWARE("edgeport/boot.fw");
3249MODULE_FIRMWARE("edgeport/boot2.fw");
3250MODULE_FIRMWARE("edgeport/down.fw");
3251MODULE_FIRMWARE("edgeport/down2.fw");
3252
3253module_param(debug, bool, S_IRUGO | S_IWUSR);
3254MODULE_PARM_DESC(debug, "Debug enabled or not");
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Edgeport USB Serial Converter driver
4 *
5 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 *
8 * Supports the following devices:
9 * Edgeport/4
10 * Edgeport/4t
11 * Edgeport/2
12 * Edgeport/4i
13 * Edgeport/2i
14 * Edgeport/421
15 * Edgeport/21
16 * Rapidport/4
17 * Edgeport/8
18 * Edgeport/2D8
19 * Edgeport/4D8
20 * Edgeport/8i
21 *
22 * For questions or problems with this driver, contact Inside Out
23 * Networks technical support, or Peter Berger <pberger@brimson.com>,
24 * or Al Borchers <alborchers@steinerpoint.com>.
25 *
26 */
27
28#include <linux/kernel.h>
29#include <linux/jiffies.h>
30#include <linux/errno.h>
31#include <linux/slab.h>
32#include <linux/tty.h>
33#include <linux/tty_driver.h>
34#include <linux/tty_flip.h>
35#include <linux/module.h>
36#include <linux/spinlock.h>
37#include <linux/serial.h>
38#include <linux/ioctl.h>
39#include <linux/wait.h>
40#include <linux/firmware.h>
41#include <linux/ihex.h>
42#include <linux/uaccess.h>
43#include <linux/usb.h>
44#include <linux/usb/serial.h>
45#include "io_edgeport.h"
46#include "io_ionsp.h" /* info for the iosp messages */
47#include "io_16654.h" /* 16654 UART defines */
48
49#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
50#define DRIVER_DESC "Edgeport USB Serial Driver"
51
52#define MAX_NAME_LEN 64
53
54#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
55
56static const struct usb_device_id edgeport_2port_id_table[] = {
57 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) },
58 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) },
59 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) },
60 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) },
61 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) },
62 { }
63};
64
65static const struct usb_device_id edgeport_4port_id_table[] = {
66 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) },
67 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) },
68 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) },
69 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) },
70 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) },
71 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) },
72 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) },
73 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) },
74 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) },
75 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) },
76 { }
77};
78
79static const struct usb_device_id edgeport_8port_id_table[] = {
80 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
81 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
82 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
83 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) },
84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) },
85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) },
86 { }
87};
88
89static const struct usb_device_id Epic_port_id_table[] = {
90 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
91 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
92 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
93 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) },
94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) },
95 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) },
96 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) },
97 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) },
98 { }
99};
100
101/* Devices that this driver supports */
102static const struct usb_device_id id_table_combined[] = {
103 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) },
104 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) },
105 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) },
106 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) },
107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) },
108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) },
109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) },
110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) },
111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) },
112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) },
113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) },
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) },
124 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
125 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
126 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
127 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) },
128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) },
129 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) },
130 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) },
131 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) },
132 { } /* Terminating entry */
133};
134
135MODULE_DEVICE_TABLE(usb, id_table_combined);
136
137
138/* receive port state */
139enum RXSTATE {
140 EXPECT_HDR1 = 0, /* Expect header byte 1 */
141 EXPECT_HDR2 = 1, /* Expect header byte 2 */
142 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
143 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
144};
145
146
147/* Transmit Fifo
148 * This Transmit queue is an extension of the edgeport Rx buffer.
149 * The maximum amount of data buffered in both the edgeport
150 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
151 */
152struct TxFifo {
153 unsigned int head; /* index to head pointer (write) */
154 unsigned int tail; /* index to tail pointer (read) */
155 unsigned int count; /* Bytes in queue */
156 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
157 unsigned char *fifo; /* allocated Buffer */
158};
159
160/* This structure holds all of the local port information */
161struct edgeport_port {
162 __u16 txCredits; /* our current credits for this port */
163 __u16 maxTxCredits; /* the max size of the port */
164
165 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
166 struct urb *write_urb; /* write URB for this port */
167 bool write_in_progress; /* 'true' while a write URB is outstanding */
168 spinlock_t ep_lock;
169
170 __u8 shadowLCR; /* last LCR value received */
171 __u8 shadowMCR; /* last MCR value received */
172 __u8 shadowMSR; /* last MSR value received */
173 __u8 shadowLSR; /* last LSR value received */
174 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
175 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
176 __u8 validDataMask;
177 __u32 baudRate;
178
179 bool open;
180 bool openPending;
181 bool commandPending;
182 bool closePending;
183 bool chaseResponsePending;
184
185 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
186 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
187 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
188
189 struct usb_serial_port *port; /* loop back to the owner of this object */
190};
191
192
193/* This structure holds all of the individual device information */
194struct edgeport_serial {
195 char name[MAX_NAME_LEN+2]; /* string name of this device */
196
197 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
198 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
199 struct edgeport_product_info product_info; /* Product Info */
200 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
201 int is_epic; /* flag if EPiC device or not */
202
203 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
204 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
205 struct urb *interrupt_read_urb; /* our interrupt urb */
206
207 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
208 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
209 struct urb *read_urb; /* our bulk read urb */
210 bool read_in_progress;
211 spinlock_t es_lock;
212
213 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
214
215 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
216
217 enum RXSTATE rxState; /* the current state of the bulk receive processor */
218 __u8 rxHeader1; /* receive header byte 1 */
219 __u8 rxHeader2; /* receive header byte 2 */
220 __u8 rxHeader3; /* receive header byte 3 */
221 __u8 rxPort; /* the port that we are currently receiving data for */
222 __u8 rxStatusCode; /* the receive status code */
223 __u8 rxStatusParam; /* the receive status parameter */
224 __s16 rxBytesRemaining; /* the number of port bytes left to read */
225 struct usb_serial *serial; /* loop back to the owner of this object */
226};
227
228/* baud rate information */
229struct divisor_table_entry {
230 __u32 BaudRate;
231 __u16 Divisor;
232};
233
234/*
235 * Define table of divisors for Rev A EdgePort/4 hardware
236 * These assume a 3.6864MHz crystal, the standard /16, and
237 * MCR.7 = 0.
238 */
239
240static const struct divisor_table_entry divisor_table[] = {
241 { 50, 4608},
242 { 75, 3072},
243 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
244 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
245 { 150, 1536},
246 { 300, 768},
247 { 600, 384},
248 { 1200, 192},
249 { 1800, 128},
250 { 2400, 96},
251 { 4800, 48},
252 { 7200, 32},
253 { 9600, 24},
254 { 14400, 16},
255 { 19200, 12},
256 { 38400, 6},
257 { 57600, 4},
258 { 115200, 2},
259 { 230400, 1},
260};
261
262/* Number of outstanding Command Write Urbs */
263static atomic_t CmdUrbs = ATOMIC_INIT(0);
264
265
266/* function prototypes */
267
268static void edge_close(struct usb_serial_port *port);
269
270static void process_rcvd_data(struct edgeport_serial *edge_serial,
271 unsigned char *buffer, __u16 bufferLength);
272static void process_rcvd_status(struct edgeport_serial *edge_serial,
273 __u8 byte2, __u8 byte3);
274static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
275 int length);
276static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
277static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
278 __u8 lsr, __u8 data);
279static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
280 __u8 param);
281static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor);
282static void change_port_settings(struct tty_struct *tty,
283 struct edgeport_port *edge_port,
284 const struct ktermios *old_termios);
285static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
286 __u8 regNum, __u8 regValue);
287static int write_cmd_usb(struct edgeport_port *edge_port,
288 unsigned char *buffer, int writeLength);
289static void send_more_port_data(struct edgeport_serial *edge_serial,
290 struct edgeport_port *edge_port);
291
292static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
293 __u16 length, const __u8 *data);
294
295/* ************************************************************************ */
296/* ************************************************************************ */
297/* ************************************************************************ */
298/* ************************************************************************ */
299
300/************************************************************************
301 * *
302 * update_edgeport_E2PROM() Compare current versions of *
303 * Boot ROM and Manufacture *
304 * Descriptors with versions *
305 * embedded in this driver *
306 * *
307 ************************************************************************/
308static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
309{
310 struct device *dev = &edge_serial->serial->dev->dev;
311 __u32 BootCurVer;
312 __u32 BootNewVer;
313 __u8 BootMajorVersion;
314 __u8 BootMinorVersion;
315 __u16 BootBuildNumber;
316 __u32 Bootaddr;
317 const struct ihex_binrec *rec;
318 const struct firmware *fw;
319 const char *fw_name;
320 int response;
321
322 switch (edge_serial->product_info.iDownloadFile) {
323 case EDGE_DOWNLOAD_FILE_I930:
324 fw_name = "edgeport/boot.fw";
325 break;
326 case EDGE_DOWNLOAD_FILE_80251:
327 fw_name = "edgeport/boot2.fw";
328 break;
329 default:
330 return;
331 }
332
333 response = request_ihex_firmware(&fw, fw_name,
334 &edge_serial->serial->dev->dev);
335 if (response) {
336 dev_err(dev, "Failed to load image \"%s\" err %d\n",
337 fw_name, response);
338 return;
339 }
340
341 rec = (const struct ihex_binrec *)fw->data;
342 BootMajorVersion = rec->data[0];
343 BootMinorVersion = rec->data[1];
344 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
345
346 /* Check Boot Image Version */
347 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
348 (edge_serial->boot_descriptor.MinorVersion << 16) +
349 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
350
351 BootNewVer = (BootMajorVersion << 24) +
352 (BootMinorVersion << 16) +
353 BootBuildNumber;
354
355 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n",
356 edge_serial->boot_descriptor.MajorVersion,
357 edge_serial->boot_descriptor.MinorVersion,
358 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
359
360
361 if (BootNewVer > BootCurVer) {
362 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
363 edge_serial->boot_descriptor.MajorVersion,
364 edge_serial->boot_descriptor.MinorVersion,
365 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
366 BootMajorVersion, BootMinorVersion, BootBuildNumber);
367
368 dev_dbg(dev, "Downloading new Boot Image\n");
369
370 for (rec = ihex_next_binrec(rec); rec;
371 rec = ihex_next_binrec(rec)) {
372 Bootaddr = be32_to_cpu(rec->addr);
373 response = rom_write(edge_serial->serial,
374 Bootaddr >> 16,
375 Bootaddr & 0xFFFF,
376 be16_to_cpu(rec->len),
377 &rec->data[0]);
378 if (response < 0) {
379 dev_err(&edge_serial->serial->dev->dev,
380 "rom_write failed (%x, %x, %d)\n",
381 Bootaddr >> 16, Bootaddr & 0xFFFF,
382 be16_to_cpu(rec->len));
383 break;
384 }
385 }
386 } else {
387 dev_dbg(dev, "Boot Image -- already up to date\n");
388 }
389 release_firmware(fw);
390}
391
392static void dump_product_info(struct edgeport_serial *edge_serial,
393 struct edgeport_product_info *product_info)
394{
395 struct device *dev = &edge_serial->serial->dev->dev;
396
397 /* Dump Product Info structure */
398 dev_dbg(dev, "**Product Information:\n");
399 dev_dbg(dev, " ProductId %x\n", product_info->ProductId);
400 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts);
401 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer);
402 dev_dbg(dev, " IsServer %d\n", product_info->IsServer);
403 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232);
404 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422);
405 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485);
406 dev_dbg(dev, " RomSize %d\n", product_info->RomSize);
407 dev_dbg(dev, " RamSize %d\n", product_info->RamSize);
408 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev);
409 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev);
410 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n",
411 product_info->BootMajorVersion,
412 product_info->BootMinorVersion,
413 le16_to_cpu(product_info->BootBuildNumber));
414 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n",
415 product_info->FirmwareMajorVersion,
416 product_info->FirmwareMinorVersion,
417 le16_to_cpu(product_info->FirmwareBuildNumber));
418 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n",
419 product_info->ManufactureDescDate[0],
420 product_info->ManufactureDescDate[1],
421 product_info->ManufactureDescDate[2]+1900);
422 dev_dbg(dev, " iDownloadFile 0x%x\n",
423 product_info->iDownloadFile);
424 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer);
425}
426
427static void get_product_info(struct edgeport_serial *edge_serial)
428{
429 struct edgeport_product_info *product_info = &edge_serial->product_info;
430
431 memset(product_info, 0, sizeof(struct edgeport_product_info));
432
433 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
434 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
435 product_info->ProdInfoVer = 0;
436
437 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
438 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
439 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
440 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
441
442 product_info->BootMajorVersion =
443 edge_serial->boot_descriptor.MajorVersion;
444 product_info->BootMinorVersion =
445 edge_serial->boot_descriptor.MinorVersion;
446 product_info->BootBuildNumber =
447 edge_serial->boot_descriptor.BuildNumber;
448
449 memcpy(product_info->ManufactureDescDate,
450 edge_serial->manuf_descriptor.DescDate,
451 sizeof(edge_serial->manuf_descriptor.DescDate));
452
453 /* check if this is 2nd generation hardware */
454 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
455 & ION_DEVICE_ID_80251_NETCHIP)
456 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
457 else
458 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
459
460 /* Determine Product type and set appropriate flags */
461 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
462 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
463 case ION_DEVICE_ID_EDGEPORT_4T:
464 case ION_DEVICE_ID_EDGEPORT_4:
465 case ION_DEVICE_ID_EDGEPORT_2:
466 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
467 case ION_DEVICE_ID_EDGEPORT_8:
468 case ION_DEVICE_ID_EDGEPORT_421:
469 case ION_DEVICE_ID_EDGEPORT_21:
470 case ION_DEVICE_ID_EDGEPORT_2_DIN:
471 case ION_DEVICE_ID_EDGEPORT_4_DIN:
472 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
473 product_info->IsRS232 = 1;
474 break;
475
476 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
477 product_info->IsRS422 = 1;
478 product_info->IsRS485 = 1;
479 break;
480
481 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
482 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
483 product_info->IsRS422 = 1;
484 break;
485 }
486
487 dump_product_info(edge_serial, product_info);
488}
489
490static int get_epic_descriptor(struct edgeport_serial *ep)
491{
492 int result;
493 struct usb_serial *serial = ep->serial;
494 struct edgeport_product_info *product_info = &ep->product_info;
495 struct edge_compatibility_descriptor *epic;
496 struct edge_compatibility_bits *bits;
497 struct device *dev = &serial->dev->dev;
498
499 ep->is_epic = 0;
500
501 epic = kmalloc(sizeof(*epic), GFP_KERNEL);
502 if (!epic)
503 return -ENOMEM;
504
505 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
506 USB_REQUEST_ION_GET_EPIC_DESC,
507 0xC0, 0x00, 0x00,
508 epic, sizeof(*epic),
509 300);
510 if (result == sizeof(*epic)) {
511 ep->is_epic = 1;
512 memcpy(&ep->epic_descriptor, epic, sizeof(*epic));
513 memset(product_info, 0, sizeof(struct edgeport_product_info));
514
515 product_info->NumPorts = epic->NumPorts;
516 product_info->ProdInfoVer = 0;
517 product_info->FirmwareMajorVersion = epic->MajorVersion;
518 product_info->FirmwareMinorVersion = epic->MinorVersion;
519 product_info->FirmwareBuildNumber = epic->BuildNumber;
520 product_info->iDownloadFile = epic->iDownloadFile;
521 product_info->EpicVer = epic->EpicVer;
522 product_info->Epic = epic->Supports;
523 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
524 dump_product_info(ep, product_info);
525
526 bits = &ep->epic_descriptor.Supports;
527 dev_dbg(dev, "**EPIC descriptor:\n");
528 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE");
529 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE");
530 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE");
531 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE");
532 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
533 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
534 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE");
535 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE");
536 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
537 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE");
538 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE");
539 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
540 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE");
541
542 result = 0;
543 } else if (result >= 0) {
544 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n",
545 result);
546 result = -EIO;
547 }
548
549 kfree(epic);
550
551 return result;
552}
553
554
555/************************************************************************/
556/************************************************************************/
557/* U S B C A L L B A C K F U N C T I O N S */
558/* U S B C A L L B A C K F U N C T I O N S */
559/************************************************************************/
560/************************************************************************/
561
562/*****************************************************************************
563 * edge_interrupt_callback
564 * this is the callback function for when we have received data on the
565 * interrupt endpoint.
566 *****************************************************************************/
567static void edge_interrupt_callback(struct urb *urb)
568{
569 struct edgeport_serial *edge_serial = urb->context;
570 struct device *dev;
571 struct edgeport_port *edge_port;
572 struct usb_serial_port *port;
573 unsigned char *data = urb->transfer_buffer;
574 int length = urb->actual_length;
575 unsigned long flags;
576 int bytes_avail;
577 int position;
578 int txCredits;
579 int portNumber;
580 int result;
581 int status = urb->status;
582
583 switch (status) {
584 case 0:
585 /* success */
586 break;
587 case -ECONNRESET:
588 case -ENOENT:
589 case -ESHUTDOWN:
590 /* this urb is terminated, clean up */
591 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
592 return;
593 default:
594 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
595 goto exit;
596 }
597
598 dev = &edge_serial->serial->dev->dev;
599
600 /* process this interrupt-read even if there are no ports open */
601 if (length) {
602 usb_serial_debug_data(dev, __func__, length, data);
603
604 if (length > 1) {
605 bytes_avail = data[0] | (data[1] << 8);
606 if (bytes_avail) {
607 spin_lock_irqsave(&edge_serial->es_lock, flags);
608 edge_serial->rxBytesAvail += bytes_avail;
609 dev_dbg(dev,
610 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
611 __func__, bytes_avail,
612 edge_serial->rxBytesAvail,
613 edge_serial->read_in_progress);
614
615 if (edge_serial->rxBytesAvail > 0 &&
616 !edge_serial->read_in_progress) {
617 dev_dbg(dev, "%s - posting a read\n", __func__);
618 edge_serial->read_in_progress = true;
619
620 /* we have pending bytes on the
621 bulk in pipe, send a request */
622 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
623 if (result) {
624 dev_err(dev,
625 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
626 __func__, result);
627 edge_serial->read_in_progress = false;
628 }
629 }
630 spin_unlock_irqrestore(&edge_serial->es_lock,
631 flags);
632 }
633 }
634 /* grab the txcredits for the ports if available */
635 position = 2;
636 portNumber = 0;
637 while ((position < length - 1) &&
638 (portNumber < edge_serial->serial->num_ports)) {
639 txCredits = data[position] | (data[position+1] << 8);
640 if (txCredits) {
641 port = edge_serial->serial->port[portNumber];
642 edge_port = usb_get_serial_port_data(port);
643 if (edge_port && edge_port->open) {
644 spin_lock_irqsave(&edge_port->ep_lock,
645 flags);
646 edge_port->txCredits += txCredits;
647 spin_unlock_irqrestore(&edge_port->ep_lock,
648 flags);
649 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
650 __func__, portNumber,
651 edge_port->txCredits);
652
653 /* tell the tty driver that something
654 has changed */
655 tty_port_tty_wakeup(&edge_port->port->port);
656 /* Since we have more credit, check
657 if more data can be sent */
658 send_more_port_data(edge_serial,
659 edge_port);
660 }
661 }
662 position += 2;
663 ++portNumber;
664 }
665 }
666
667exit:
668 result = usb_submit_urb(urb, GFP_ATOMIC);
669 if (result)
670 dev_err(&urb->dev->dev,
671 "%s - Error %d submitting control urb\n",
672 __func__, result);
673}
674
675
676/*****************************************************************************
677 * edge_bulk_in_callback
678 * this is the callback function for when we have received data on the
679 * bulk in endpoint.
680 *****************************************************************************/
681static void edge_bulk_in_callback(struct urb *urb)
682{
683 struct edgeport_serial *edge_serial = urb->context;
684 struct device *dev;
685 unsigned char *data = urb->transfer_buffer;
686 int retval;
687 __u16 raw_data_length;
688 int status = urb->status;
689 unsigned long flags;
690
691 if (status) {
692 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
693 __func__, status);
694 edge_serial->read_in_progress = false;
695 return;
696 }
697
698 if (urb->actual_length == 0) {
699 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
700 edge_serial->read_in_progress = false;
701 return;
702 }
703
704 dev = &edge_serial->serial->dev->dev;
705 raw_data_length = urb->actual_length;
706
707 usb_serial_debug_data(dev, __func__, raw_data_length, data);
708
709 spin_lock_irqsave(&edge_serial->es_lock, flags);
710
711 /* decrement our rxBytes available by the number that we just got */
712 edge_serial->rxBytesAvail -= raw_data_length;
713
714 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
715 raw_data_length, edge_serial->rxBytesAvail);
716
717 process_rcvd_data(edge_serial, data, urb->actual_length);
718
719 /* check to see if there's any more data for us to read */
720 if (edge_serial->rxBytesAvail > 0) {
721 dev_dbg(dev, "%s - posting a read\n", __func__);
722 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
723 if (retval) {
724 dev_err(dev,
725 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
726 __func__, retval);
727 edge_serial->read_in_progress = false;
728 }
729 } else {
730 edge_serial->read_in_progress = false;
731 }
732
733 spin_unlock_irqrestore(&edge_serial->es_lock, flags);
734}
735
736
737/*****************************************************************************
738 * edge_bulk_out_data_callback
739 * this is the callback function for when we have finished sending
740 * serial data on the bulk out endpoint.
741 *****************************************************************************/
742static void edge_bulk_out_data_callback(struct urb *urb)
743{
744 struct edgeport_port *edge_port = urb->context;
745 int status = urb->status;
746
747 if (status) {
748 dev_dbg(&urb->dev->dev,
749 "%s - nonzero write bulk status received: %d\n",
750 __func__, status);
751 }
752
753 if (edge_port->open)
754 tty_port_tty_wakeup(&edge_port->port->port);
755
756 /* Release the Write URB */
757 edge_port->write_in_progress = false;
758
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);
762}
763
764
765/*****************************************************************************
766 * BulkOutCmdCallback
767 * this is the callback function for when we have finished sending a
768 * command on the bulk out endpoint.
769 *****************************************************************************/
770static void edge_bulk_out_cmd_callback(struct urb *urb)
771{
772 struct edgeport_port *edge_port = urb->context;
773 int status = urb->status;
774
775 atomic_dec(&CmdUrbs);
776 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n",
777 __func__, urb, atomic_read(&CmdUrbs));
778
779
780 /* clean up the transfer buffer */
781 kfree(urb->transfer_buffer);
782
783 /* Free the command urb */
784 usb_free_urb(urb);
785
786 if (status) {
787 dev_dbg(&urb->dev->dev,
788 "%s - nonzero write bulk status received: %d\n",
789 __func__, status);
790 return;
791 }
792
793 /* tell the tty driver that something has changed */
794 if (edge_port->open)
795 tty_port_tty_wakeup(&edge_port->port->port);
796
797 /* we have completed the command */
798 edge_port->commandPending = false;
799 wake_up(&edge_port->wait_command);
800}
801
802
803/*****************************************************************************
804 * Driver tty interface functions
805 *****************************************************************************/
806
807/*****************************************************************************
808 * SerialOpen
809 * this function is called by the tty driver when a port is opened
810 * If successful, we return 0
811 * Otherwise we return a negative error number.
812 *****************************************************************************/
813static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
814{
815 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
816 struct device *dev = &port->dev;
817 struct usb_serial *serial;
818 struct edgeport_serial *edge_serial;
819 int response;
820
821 if (edge_port == NULL)
822 return -ENODEV;
823
824 /* see if we've set up our endpoint info yet (can't set it up
825 in edge_startup as the structures were not set up at that time.) */
826 serial = port->serial;
827 edge_serial = usb_get_serial_data(serial);
828 if (edge_serial == NULL)
829 return -ENODEV;
830 if (edge_serial->interrupt_in_buffer == NULL) {
831 struct usb_serial_port *port0 = serial->port[0];
832
833 /* not set up yet, so do it now */
834 edge_serial->interrupt_in_buffer =
835 port0->interrupt_in_buffer;
836 edge_serial->interrupt_in_endpoint =
837 port0->interrupt_in_endpointAddress;
838 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
839 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
840 edge_serial->bulk_in_endpoint =
841 port0->bulk_in_endpointAddress;
842 edge_serial->read_urb = port0->read_urb;
843 edge_serial->bulk_out_endpoint =
844 port0->bulk_out_endpointAddress;
845
846 /* set up our interrupt urb */
847 usb_fill_int_urb(edge_serial->interrupt_read_urb,
848 serial->dev,
849 usb_rcvintpipe(serial->dev,
850 port0->interrupt_in_endpointAddress),
851 port0->interrupt_in_buffer,
852 edge_serial->interrupt_read_urb->transfer_buffer_length,
853 edge_interrupt_callback, edge_serial,
854 edge_serial->interrupt_read_urb->interval);
855
856 /* set up our bulk in urb */
857 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
858 usb_rcvbulkpipe(serial->dev,
859 port0->bulk_in_endpointAddress),
860 port0->bulk_in_buffer,
861 edge_serial->read_urb->transfer_buffer_length,
862 edge_bulk_in_callback, edge_serial);
863 edge_serial->read_in_progress = false;
864
865 /* start interrupt read for this edgeport
866 * this interrupt will continue as long
867 * as the edgeport is connected */
868 response = usb_submit_urb(edge_serial->interrupt_read_urb,
869 GFP_KERNEL);
870 if (response) {
871 dev_err(dev, "%s - Error %d submitting control urb\n",
872 __func__, response);
873 }
874 }
875
876 /* initialize our wait queues */
877 init_waitqueue_head(&edge_port->wait_open);
878 init_waitqueue_head(&edge_port->wait_chase);
879 init_waitqueue_head(&edge_port->wait_command);
880
881 /* initialize our port settings */
882 edge_port->txCredits = 0; /* Can't send any data yet */
883 /* Must always set this bit to enable ints! */
884 edge_port->shadowMCR = MCR_MASTER_IE;
885 edge_port->chaseResponsePending = false;
886
887 /* send a open port command */
888 edge_port->openPending = true;
889 edge_port->open = false;
890 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
891
892 if (response < 0) {
893 dev_err(dev, "%s - error sending open port command\n", __func__);
894 edge_port->openPending = false;
895 return -ENODEV;
896 }
897
898 /* now wait for the port to be completely opened */
899 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
900 OPEN_TIMEOUT);
901
902 if (!edge_port->open) {
903 /* open timed out */
904 dev_dbg(dev, "%s - open timeout\n", __func__);
905 edge_port->openPending = false;
906 return -ENODEV;
907 }
908
909 /* create the txfifo */
910 edge_port->txfifo.head = 0;
911 edge_port->txfifo.tail = 0;
912 edge_port->txfifo.count = 0;
913 edge_port->txfifo.size = edge_port->maxTxCredits;
914 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
915
916 if (!edge_port->txfifo.fifo) {
917 edge_close(port);
918 return -ENOMEM;
919 }
920
921 /* Allocate a URB for the write */
922 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
923 edge_port->write_in_progress = false;
924
925 if (!edge_port->write_urb) {
926 edge_close(port);
927 return -ENOMEM;
928 }
929
930 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
931 __func__, edge_port->maxTxCredits);
932
933 return 0;
934}
935
936
937/************************************************************************
938 *
939 * block_until_chase_response
940 *
941 * This function will block the close until one of the following:
942 * 1. Response to our Chase comes from Edgeport
943 * 2. A timeout of 10 seconds without activity has expired
944 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
945 *
946 ************************************************************************/
947static void block_until_chase_response(struct edgeport_port *edge_port)
948{
949 struct device *dev = &edge_port->port->dev;
950 DEFINE_WAIT(wait);
951 __u16 lastCredits;
952 int timeout = 1*HZ;
953 int loop = 10;
954
955 while (1) {
956 /* Save Last credits */
957 lastCredits = edge_port->txCredits;
958
959 /* Did we get our Chase response */
960 if (!edge_port->chaseResponsePending) {
961 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
962
963 /* did we get all of our credit back? */
964 if (edge_port->txCredits == edge_port->maxTxCredits) {
965 dev_dbg(dev, "%s - Got all credits\n", __func__);
966 return;
967 }
968 }
969
970 /* Block the thread for a while */
971 prepare_to_wait(&edge_port->wait_chase, &wait,
972 TASK_UNINTERRUPTIBLE);
973 schedule_timeout(timeout);
974 finish_wait(&edge_port->wait_chase, &wait);
975
976 if (lastCredits == edge_port->txCredits) {
977 /* No activity.. count down. */
978 loop--;
979 if (loop == 0) {
980 edge_port->chaseResponsePending = false;
981 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
982 return;
983 }
984 } else {
985 /* Reset timeout value back to 10 seconds */
986 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
987 lastCredits, edge_port->txCredits);
988 loop = 10;
989 }
990 }
991}
992
993
994/************************************************************************
995 *
996 * block_until_tx_empty
997 *
998 * This function will block the close until one of the following:
999 * 1. TX count are 0
1000 * 2. The edgeport has stopped
1001 * 3. A timeout of 3 seconds without activity has expired
1002 *
1003 ************************************************************************/
1004static void block_until_tx_empty(struct edgeport_port *edge_port)
1005{
1006 struct device *dev = &edge_port->port->dev;
1007 DEFINE_WAIT(wait);
1008 struct TxFifo *fifo = &edge_port->txfifo;
1009 __u32 lastCount;
1010 int timeout = HZ/10;
1011 int loop = 30;
1012
1013 while (1) {
1014 /* Save Last count */
1015 lastCount = fifo->count;
1016
1017 /* Is the Edgeport Buffer empty? */
1018 if (lastCount == 0) {
1019 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1020 return;
1021 }
1022
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);
1028
1029 dev_dbg(dev, "%s wait\n", __func__);
1030
1031 if (lastCount == fifo->count) {
1032 /* No activity.. count down. */
1033 loop--;
1034 if (loop == 0) {
1035 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1036 return;
1037 }
1038 } else {
1039 /* Reset timeout value back to seconds */
1040 loop = 30;
1041 }
1042 }
1043}
1044
1045
1046/*****************************************************************************
1047 * edge_close
1048 * this function is called by the tty driver when a port is closed
1049 *****************************************************************************/
1050static void edge_close(struct usb_serial_port *port)
1051{
1052 struct edgeport_serial *edge_serial;
1053 struct edgeport_port *edge_port;
1054 int status;
1055
1056 edge_serial = usb_get_serial_data(port->serial);
1057 edge_port = usb_get_serial_port_data(port);
1058 if (edge_serial == NULL || edge_port == NULL)
1059 return;
1060
1061 /* block until tx is empty */
1062 block_until_tx_empty(edge_port);
1063
1064 edge_port->closePending = true;
1065
1066 if (!edge_serial->is_epic ||
1067 edge_serial->epic_descriptor.Supports.IOSPChase) {
1068 /* flush and chase */
1069 edge_port->chaseResponsePending = true;
1070
1071 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1072 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1073 if (status == 0)
1074 /* block until chase finished */
1075 block_until_chase_response(edge_port);
1076 else
1077 edge_port->chaseResponsePending = false;
1078 }
1079
1080 if (!edge_serial->is_epic ||
1081 edge_serial->epic_descriptor.Supports.IOSPClose) {
1082 /* close the port */
1083 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
1084 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1085 }
1086
1087 /* port->close = true; */
1088 edge_port->closePending = false;
1089 edge_port->open = false;
1090 edge_port->openPending = false;
1091
1092 usb_kill_urb(edge_port->write_urb);
1093
1094 if (edge_port->write_urb) {
1095 /* if this urb had a transfer buffer already
1096 (old transfer) free it */
1097 kfree(edge_port->write_urb->transfer_buffer);
1098 usb_free_urb(edge_port->write_urb);
1099 edge_port->write_urb = NULL;
1100 }
1101 kfree(edge_port->txfifo.fifo);
1102 edge_port->txfifo.fifo = NULL;
1103}
1104
1105/*****************************************************************************
1106 * SerialWrite
1107 * this function is called by the tty driver when data should be written
1108 * to the port.
1109 * If successful, we return the number of bytes written, otherwise we
1110 * return a negative error number.
1111 *****************************************************************************/
1112static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1113 const unsigned char *data, int count)
1114{
1115 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1116 struct TxFifo *fifo;
1117 int copySize;
1118 int bytesleft;
1119 int firsthalf;
1120 int secondhalf;
1121 unsigned long flags;
1122
1123 if (edge_port == NULL)
1124 return -ENODEV;
1125
1126 /* get a pointer to the Tx fifo */
1127 fifo = &edge_port->txfifo;
1128
1129 spin_lock_irqsave(&edge_port->ep_lock, flags);
1130
1131 /* calculate number of bytes to put in fifo */
1132 copySize = min((unsigned int)count,
1133 (edge_port->txCredits - fifo->count));
1134
1135 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1136 __func__, count, edge_port->txCredits - fifo->count, copySize);
1137
1138 /* catch writes of 0 bytes which the tty driver likes to give us,
1139 and when txCredits is empty */
1140 if (copySize == 0) {
1141 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1142 goto finish_write;
1143 }
1144
1145 /* queue the data
1146 * since we can never overflow the buffer we do not have to check for a
1147 * full condition
1148 *
1149 * the copy is done is two parts -- first fill to the end of the buffer
1150 * then copy the reset from the start of the buffer
1151 */
1152 bytesleft = fifo->size - fifo->head;
1153 firsthalf = min(bytesleft, copySize);
1154 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1155 firsthalf, bytesleft);
1156
1157 /* now copy our data */
1158 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1159 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1160
1161 /* update the index and size */
1162 fifo->head += firsthalf;
1163 fifo->count += firsthalf;
1164
1165 /* wrap the index */
1166 if (fifo->head == fifo->size)
1167 fifo->head = 0;
1168
1169 secondhalf = copySize-firsthalf;
1170
1171 if (secondhalf) {
1172 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1173 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1174 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
1175 /* update the index and size */
1176 fifo->count += secondhalf;
1177 fifo->head += secondhalf;
1178 /* No need to check for wrap since we can not get to end of
1179 * the fifo in this part
1180 */
1181 }
1182
1183finish_write:
1184 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1185
1186 send_more_port_data((struct edgeport_serial *)
1187 usb_get_serial_data(port->serial), edge_port);
1188
1189 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1190 __func__, copySize, edge_port->txCredits, fifo->count);
1191
1192 return copySize;
1193}
1194
1195
1196/************************************************************************
1197 *
1198 * send_more_port_data()
1199 *
1200 * This routine attempts to write additional UART transmit data
1201 * to a port over the USB bulk pipe. It is called (1) when new
1202 * data has been written to a port's TxBuffer from higher layers
1203 * (2) when the peripheral sends us additional TxCredits indicating
1204 * that it can accept more Tx data for a given port; and (3) when
1205 * a bulk write completes successfully and we want to see if we
1206 * can transmit more.
1207 *
1208 ************************************************************************/
1209static void send_more_port_data(struct edgeport_serial *edge_serial,
1210 struct edgeport_port *edge_port)
1211{
1212 struct TxFifo *fifo = &edge_port->txfifo;
1213 struct device *dev = &edge_port->port->dev;
1214 struct urb *urb;
1215 unsigned char *buffer;
1216 int status;
1217 int count;
1218 int bytesleft;
1219 int firsthalf;
1220 int secondhalf;
1221 unsigned long flags;
1222
1223 spin_lock_irqsave(&edge_port->ep_lock, flags);
1224
1225 if (edge_port->write_in_progress ||
1226 !edge_port->open ||
1227 (fifo->count == 0)) {
1228 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1229 __func__, fifo->count, edge_port->write_in_progress);
1230 goto exit_send;
1231 }
1232
1233 /* since the amount of data in the fifo will always fit into the
1234 * edgeport buffer we do not need to check the write length
1235 *
1236 * Do we have enough credits for this port to make it worthwhile
1237 * to bother queueing a write. If it's too small, say a few bytes,
1238 * it's better to wait for more credits so we can do a larger write.
1239 */
1240 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1241 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1242 __func__, fifo->count, edge_port->txCredits);
1243 goto exit_send;
1244 }
1245
1246 /* lock this write */
1247 edge_port->write_in_progress = true;
1248
1249 /* get a pointer to the write_urb */
1250 urb = edge_port->write_urb;
1251
1252 /* make sure transfer buffer is freed */
1253 kfree(urb->transfer_buffer);
1254 urb->transfer_buffer = NULL;
1255
1256 /* build the data header for the buffer and port that we are about
1257 to send out */
1258 count = fifo->count;
1259 buffer = kmalloc(count+2, GFP_ATOMIC);
1260 if (!buffer) {
1261 edge_port->write_in_progress = false;
1262 goto exit_send;
1263 }
1264 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1265 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1266
1267 /* now copy our data */
1268 bytesleft = fifo->size - fifo->tail;
1269 firsthalf = min(bytesleft, count);
1270 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1271 fifo->tail += firsthalf;
1272 fifo->count -= firsthalf;
1273 if (fifo->tail == fifo->size)
1274 fifo->tail = 0;
1275
1276 secondhalf = count-firsthalf;
1277 if (secondhalf) {
1278 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1279 secondhalf);
1280 fifo->tail += secondhalf;
1281 fifo->count -= secondhalf;
1282 }
1283
1284 if (count)
1285 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1286
1287 /* fill up the urb with all of our data and submit it */
1288 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1289 usb_sndbulkpipe(edge_serial->serial->dev,
1290 edge_serial->bulk_out_endpoint),
1291 buffer, count+2,
1292 edge_bulk_out_data_callback, edge_port);
1293
1294 /* decrement the number of credits we have by the number we just sent */
1295 edge_port->txCredits -= count;
1296 edge_port->port->icount.tx += count;
1297
1298 status = usb_submit_urb(urb, GFP_ATOMIC);
1299 if (status) {
1300 /* something went wrong */
1301 dev_err_console(edge_port->port,
1302 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1303 __func__, status);
1304 edge_port->write_in_progress = false;
1305
1306 /* revert the credits as something bad happened. */
1307 edge_port->txCredits += count;
1308 edge_port->port->icount.tx -= count;
1309 }
1310 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1311 __func__, count, edge_port->txCredits, fifo->count);
1312
1313exit_send:
1314 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1315}
1316
1317
1318/*****************************************************************************
1319 * edge_write_room
1320 * this function is called by the tty driver when it wants to know how
1321 * many bytes of data we can accept for a specific port.
1322 *****************************************************************************/
1323static unsigned int edge_write_room(struct tty_struct *tty)
1324{
1325 struct usb_serial_port *port = tty->driver_data;
1326 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1327 unsigned int room;
1328 unsigned long flags;
1329
1330 /* total of both buffers is still txCredit */
1331 spin_lock_irqsave(&edge_port->ep_lock, flags);
1332 room = edge_port->txCredits - edge_port->txfifo.count;
1333 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1334
1335 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room);
1336 return room;
1337}
1338
1339
1340/*****************************************************************************
1341 * edge_chars_in_buffer
1342 * this function is called by the tty driver when it wants to know how
1343 * many bytes of data we currently have outstanding in the port (data that
1344 * has been written, but hasn't made it out the port yet)
1345 *****************************************************************************/
1346static unsigned int edge_chars_in_buffer(struct tty_struct *tty)
1347{
1348 struct usb_serial_port *port = tty->driver_data;
1349 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1350 unsigned int num_chars;
1351 unsigned long flags;
1352
1353 spin_lock_irqsave(&edge_port->ep_lock, flags);
1354 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1355 edge_port->txfifo.count;
1356 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1357 if (num_chars) {
1358 dev_dbg(&port->dev, "%s - returns %u\n", __func__, num_chars);
1359 }
1360
1361 return num_chars;
1362}
1363
1364
1365/*****************************************************************************
1366 * SerialThrottle
1367 * this function is called by the tty driver when it wants to stop the data
1368 * being read from the port.
1369 *****************************************************************************/
1370static void edge_throttle(struct tty_struct *tty)
1371{
1372 struct usb_serial_port *port = tty->driver_data;
1373 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1374 int status;
1375
1376 if (edge_port == NULL)
1377 return;
1378
1379 if (!edge_port->open) {
1380 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1381 return;
1382 }
1383
1384 /* if we are implementing XON/XOFF, send the stop character */
1385 if (I_IXOFF(tty)) {
1386 unsigned char stop_char = STOP_CHAR(tty);
1387 status = edge_write(tty, port, &stop_char, 1);
1388 if (status <= 0)
1389 return;
1390 }
1391
1392 /* if we are implementing RTS/CTS, toggle that line */
1393 if (C_CRTSCTS(tty)) {
1394 edge_port->shadowMCR &= ~MCR_RTS;
1395 status = send_cmd_write_uart_register(edge_port, MCR,
1396 edge_port->shadowMCR);
1397 if (status != 0)
1398 return;
1399 }
1400}
1401
1402
1403/*****************************************************************************
1404 * edge_unthrottle
1405 * this function is called by the tty driver when it wants to resume the
1406 * data being read from the port (called after SerialThrottle is called)
1407 *****************************************************************************/
1408static void edge_unthrottle(struct tty_struct *tty)
1409{
1410 struct usb_serial_port *port = tty->driver_data;
1411 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1412 int status;
1413
1414 if (edge_port == NULL)
1415 return;
1416
1417 if (!edge_port->open) {
1418 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1419 return;
1420 }
1421
1422 /* if we are implementing XON/XOFF, send the start character */
1423 if (I_IXOFF(tty)) {
1424 unsigned char start_char = START_CHAR(tty);
1425 status = edge_write(tty, port, &start_char, 1);
1426 if (status <= 0)
1427 return;
1428 }
1429 /* if we are implementing RTS/CTS, toggle that line */
1430 if (C_CRTSCTS(tty)) {
1431 edge_port->shadowMCR |= MCR_RTS;
1432 send_cmd_write_uart_register(edge_port, MCR,
1433 edge_port->shadowMCR);
1434 }
1435}
1436
1437
1438/*****************************************************************************
1439 * SerialSetTermios
1440 * this function is called by the tty driver when it wants to change
1441 * the termios structure
1442 *****************************************************************************/
1443static void edge_set_termios(struct tty_struct *tty,
1444 struct usb_serial_port *port,
1445 const struct ktermios *old_termios)
1446{
1447 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1448
1449 if (edge_port == NULL)
1450 return;
1451
1452 if (!edge_port->open) {
1453 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1454 return;
1455 }
1456
1457 /* change the port settings to the new ones specified */
1458 change_port_settings(tty, edge_port, old_termios);
1459}
1460
1461
1462/*****************************************************************************
1463 * get_lsr_info - get line status register info
1464 *
1465 * Purpose: Let user call ioctl() to get info when the UART physically
1466 * is emptied. On bus types like RS485, the transmitter must
1467 * release the bus after transmitting. This must be done when
1468 * the transmit shift register is empty, not be done when the
1469 * transmit holding register is empty. This functionality
1470 * allows an RS485 driver to be written in user space.
1471 *****************************************************************************/
1472static int get_lsr_info(struct edgeport_port *edge_port,
1473 unsigned int __user *value)
1474{
1475 unsigned int result = 0;
1476 unsigned long flags;
1477
1478 spin_lock_irqsave(&edge_port->ep_lock, flags);
1479 if (edge_port->maxTxCredits == edge_port->txCredits &&
1480 edge_port->txfifo.count == 0) {
1481 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1482 result = TIOCSER_TEMT;
1483 }
1484 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1485
1486 if (copy_to_user(value, &result, sizeof(int)))
1487 return -EFAULT;
1488 return 0;
1489}
1490
1491static int edge_tiocmset(struct tty_struct *tty,
1492 unsigned int set, unsigned int clear)
1493{
1494 struct usb_serial_port *port = tty->driver_data;
1495 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1496 unsigned int mcr;
1497
1498 mcr = edge_port->shadowMCR;
1499 if (set & TIOCM_RTS)
1500 mcr |= MCR_RTS;
1501 if (set & TIOCM_DTR)
1502 mcr |= MCR_DTR;
1503 if (set & TIOCM_LOOP)
1504 mcr |= MCR_LOOPBACK;
1505
1506 if (clear & TIOCM_RTS)
1507 mcr &= ~MCR_RTS;
1508 if (clear & TIOCM_DTR)
1509 mcr &= ~MCR_DTR;
1510 if (clear & TIOCM_LOOP)
1511 mcr &= ~MCR_LOOPBACK;
1512
1513 edge_port->shadowMCR = mcr;
1514
1515 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1516
1517 return 0;
1518}
1519
1520static int edge_tiocmget(struct tty_struct *tty)
1521{
1522 struct usb_serial_port *port = tty->driver_data;
1523 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1524 unsigned int result = 0;
1525 unsigned int msr;
1526 unsigned int mcr;
1527
1528 msr = edge_port->shadowMSR;
1529 mcr = edge_port->shadowMCR;
1530 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1531 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1532 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1533 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1534 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1535 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1536
1537 return result;
1538}
1539
1540/*****************************************************************************
1541 * SerialIoctl
1542 * this function handles any ioctl calls to the driver
1543 *****************************************************************************/
1544static int edge_ioctl(struct tty_struct *tty,
1545 unsigned int cmd, unsigned long arg)
1546{
1547 struct usb_serial_port *port = tty->driver_data;
1548 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1549
1550 switch (cmd) {
1551 case TIOCSERGETLSR:
1552 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
1553 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1554 }
1555 return -ENOIOCTLCMD;
1556}
1557
1558
1559/*****************************************************************************
1560 * SerialBreak
1561 * this function sends a break to the port
1562 *****************************************************************************/
1563static void edge_break(struct tty_struct *tty, int break_state)
1564{
1565 struct usb_serial_port *port = tty->driver_data;
1566 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1567 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1568 int status;
1569
1570 if (!edge_serial->is_epic ||
1571 edge_serial->epic_descriptor.Supports.IOSPChase) {
1572 /* flush and chase */
1573 edge_port->chaseResponsePending = true;
1574
1575 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1576 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1577 if (status == 0) {
1578 /* block until chase finished */
1579 block_until_chase_response(edge_port);
1580 } else {
1581 edge_port->chaseResponsePending = false;
1582 }
1583 }
1584
1585 if (!edge_serial->is_epic ||
1586 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) {
1587 if (break_state == -1) {
1588 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
1589 status = send_iosp_ext_cmd(edge_port,
1590 IOSP_CMD_SET_BREAK, 0);
1591 } else {
1592 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
1593 status = send_iosp_ext_cmd(edge_port,
1594 IOSP_CMD_CLEAR_BREAK, 0);
1595 }
1596 if (status)
1597 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
1598 __func__);
1599 }
1600}
1601
1602
1603/*****************************************************************************
1604 * process_rcvd_data
1605 * this function handles the data received on the bulk in pipe.
1606 *****************************************************************************/
1607static void process_rcvd_data(struct edgeport_serial *edge_serial,
1608 unsigned char *buffer, __u16 bufferLength)
1609{
1610 struct usb_serial *serial = edge_serial->serial;
1611 struct device *dev = &serial->dev->dev;
1612 struct usb_serial_port *port;
1613 struct edgeport_port *edge_port;
1614 __u16 lastBufferLength;
1615 __u16 rxLen;
1616
1617 lastBufferLength = bufferLength + 1;
1618
1619 while (bufferLength > 0) {
1620 /* failsafe incase we get a message that we don't understand */
1621 if (lastBufferLength == bufferLength) {
1622 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1623 break;
1624 }
1625 lastBufferLength = bufferLength;
1626
1627 switch (edge_serial->rxState) {
1628 case EXPECT_HDR1:
1629 edge_serial->rxHeader1 = *buffer;
1630 ++buffer;
1631 --bufferLength;
1632
1633 if (bufferLength == 0) {
1634 edge_serial->rxState = EXPECT_HDR2;
1635 break;
1636 }
1637 fallthrough;
1638 case EXPECT_HDR2:
1639 edge_serial->rxHeader2 = *buffer;
1640 ++buffer;
1641 --bufferLength;
1642
1643 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1644 edge_serial->rxHeader1, edge_serial->rxHeader2);
1645 /* Process depending on whether this header is
1646 * data or status */
1647
1648 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1649 /* Decode this status header and go to
1650 * EXPECT_HDR1 (if we can process the status
1651 * with only 2 bytes), or go to EXPECT_HDR3 to
1652 * get the third byte. */
1653 edge_serial->rxPort =
1654 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1655 edge_serial->rxStatusCode =
1656 IOSP_GET_STATUS_CODE(
1657 edge_serial->rxHeader1);
1658
1659 if (!IOSP_STATUS_IS_2BYTE(
1660 edge_serial->rxStatusCode)) {
1661 /* This status needs additional bytes.
1662 * Save what we have and then wait for
1663 * more data.
1664 */
1665 edge_serial->rxStatusParam
1666 = edge_serial->rxHeader2;
1667 edge_serial->rxState = EXPECT_HDR3;
1668 break;
1669 }
1670 /* We have all the header bytes, process the
1671 status now */
1672 process_rcvd_status(edge_serial,
1673 edge_serial->rxHeader2, 0);
1674 edge_serial->rxState = EXPECT_HDR1;
1675 break;
1676 }
1677
1678 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1679 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1,
1680 edge_serial->rxHeader2);
1681 dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__,
1682 edge_serial->rxPort,
1683 edge_serial->rxBytesRemaining);
1684
1685 if (bufferLength == 0) {
1686 edge_serial->rxState = EXPECT_DATA;
1687 break;
1688 }
1689 fallthrough;
1690 case EXPECT_DATA: /* Expect data */
1691 if (bufferLength < edge_serial->rxBytesRemaining) {
1692 rxLen = bufferLength;
1693 /* Expect data to start next buffer */
1694 edge_serial->rxState = EXPECT_DATA;
1695 } else {
1696 /* BufLen >= RxBytesRemaining */
1697 rxLen = edge_serial->rxBytesRemaining;
1698 /* Start another header next time */
1699 edge_serial->rxState = EXPECT_HDR1;
1700 }
1701
1702 bufferLength -= rxLen;
1703 edge_serial->rxBytesRemaining -= rxLen;
1704
1705 /* spit this data back into the tty driver if this
1706 port is open */
1707 if (rxLen && edge_serial->rxPort < serial->num_ports) {
1708 port = serial->port[edge_serial->rxPort];
1709 edge_port = usb_get_serial_port_data(port);
1710 if (edge_port && edge_port->open) {
1711 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1712 __func__, rxLen,
1713 edge_serial->rxPort);
1714 edge_tty_recv(edge_port->port, buffer,
1715 rxLen);
1716 edge_port->port->icount.rx += rxLen;
1717 }
1718 }
1719 buffer += rxLen;
1720 break;
1721
1722 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1723 edge_serial->rxHeader3 = *buffer;
1724 ++buffer;
1725 --bufferLength;
1726
1727 /* We have all the header bytes, process the
1728 status now */
1729 process_rcvd_status(edge_serial,
1730 edge_serial->rxStatusParam,
1731 edge_serial->rxHeader3);
1732 edge_serial->rxState = EXPECT_HDR1;
1733 break;
1734 }
1735 }
1736}
1737
1738
1739/*****************************************************************************
1740 * process_rcvd_status
1741 * this function handles the any status messages received on the
1742 * bulk in pipe.
1743 *****************************************************************************/
1744static void process_rcvd_status(struct edgeport_serial *edge_serial,
1745 __u8 byte2, __u8 byte3)
1746{
1747 struct usb_serial_port *port;
1748 struct edgeport_port *edge_port;
1749 struct tty_struct *tty;
1750 struct device *dev;
1751 __u8 code = edge_serial->rxStatusCode;
1752
1753 /* switch the port pointer to the one being currently talked about */
1754 if (edge_serial->rxPort >= edge_serial->serial->num_ports)
1755 return;
1756 port = edge_serial->serial->port[edge_serial->rxPort];
1757 edge_port = usb_get_serial_port_data(port);
1758 if (edge_port == NULL) {
1759 dev_err(&edge_serial->serial->dev->dev,
1760 "%s - edge_port == NULL for port %d\n",
1761 __func__, edge_serial->rxPort);
1762 return;
1763 }
1764 dev = &port->dev;
1765
1766 if (code == IOSP_EXT_STATUS) {
1767 switch (byte2) {
1768 case IOSP_EXT_STATUS_CHASE_RSP:
1769 /* we want to do EXT status regardless of port
1770 * open/closed */
1771 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1772 __func__, edge_serial->rxPort, byte3);
1773 /* Currently, the only EXT_STATUS is Chase, so process
1774 * here instead of one more call to one more subroutine
1775 * If/when more EXT_STATUS, there'll be more work to do
1776 * Also, we currently clear flag and close the port
1777 * regardless of content of above's Byte3.
1778 * We could choose to do something else when Byte3 says
1779 * Timeout on Chase from Edgeport, like wait longer in
1780 * block_until_chase_response, but for now we don't.
1781 */
1782 edge_port->chaseResponsePending = false;
1783 wake_up(&edge_port->wait_chase);
1784 return;
1785
1786 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1787 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1788 __func__, edge_serial->rxPort, byte3);
1789 /* Port->RxCheckRsp = true; */
1790 return;
1791 }
1792 }
1793
1794 if (code == IOSP_STATUS_OPEN_RSP) {
1795 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1796 edge_port->maxTxCredits = edge_port->txCredits;
1797 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1798 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1799 handle_new_msr(edge_port, byte2);
1800
1801 /* send the current line settings to the port so we are
1802 in sync with any further termios calls */
1803 tty = tty_port_tty_get(&edge_port->port->port);
1804 if (tty) {
1805 change_port_settings(tty,
1806 edge_port, &tty->termios);
1807 tty_kref_put(tty);
1808 }
1809
1810 /* we have completed the open */
1811 edge_port->openPending = false;
1812 edge_port->open = true;
1813 wake_up(&edge_port->wait_open);
1814 return;
1815 }
1816
1817 /* If port is closed, silently discard all rcvd status. We can
1818 * have cases where buffered status is received AFTER the close
1819 * port command is sent to the Edgeport.
1820 */
1821 if (!edge_port->open || edge_port->closePending)
1822 return;
1823
1824 switch (code) {
1825 /* Not currently sent by Edgeport */
1826 case IOSP_STATUS_LSR:
1827 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1828 __func__, edge_serial->rxPort, byte2);
1829 handle_new_lsr(edge_port, false, byte2, 0);
1830 break;
1831
1832 case IOSP_STATUS_LSR_DATA:
1833 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1834 __func__, edge_serial->rxPort, byte2, byte3);
1835 /* byte2 is LSR Register */
1836 /* byte3 is broken data byte */
1837 handle_new_lsr(edge_port, true, byte2, byte3);
1838 break;
1839 /*
1840 * case IOSP_EXT_4_STATUS:
1841 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1842 * __func__, edge_serial->rxPort, byte2, byte3);
1843 * break;
1844 */
1845 case IOSP_STATUS_MSR:
1846 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1847 __func__, edge_serial->rxPort, byte2);
1848 /*
1849 * Process this new modem status and generate appropriate
1850 * events, etc, based on the new status. This routine
1851 * also saves the MSR in Port->ShadowMsr.
1852 */
1853 handle_new_msr(edge_port, byte2);
1854 break;
1855
1856 default:
1857 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
1858 break;
1859 }
1860}
1861
1862
1863/*****************************************************************************
1864 * edge_tty_recv
1865 * this function passes data on to the tty flip buffer
1866 *****************************************************************************/
1867static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1868 int length)
1869{
1870 int cnt;
1871
1872 cnt = tty_insert_flip_string(&port->port, data, length);
1873 if (cnt < length) {
1874 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1875 __func__, length - cnt);
1876 }
1877 data += cnt;
1878 length -= cnt;
1879
1880 tty_flip_buffer_push(&port->port);
1881}
1882
1883
1884/*****************************************************************************
1885 * handle_new_msr
1886 * this function handles any change to the msr register for a port.
1887 *****************************************************************************/
1888static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
1889{
1890 struct async_icount *icount;
1891
1892 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1893 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1894 icount = &edge_port->port->icount;
1895
1896 /* update input line counters */
1897 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1898 icount->cts++;
1899 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1900 icount->dsr++;
1901 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1902 icount->dcd++;
1903 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1904 icount->rng++;
1905 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1906 }
1907
1908 /* Save the new modem status */
1909 edge_port->shadowMSR = newMsr & 0xf0;
1910}
1911
1912
1913/*****************************************************************************
1914 * handle_new_lsr
1915 * this function handles any change to the lsr register for a port.
1916 *****************************************************************************/
1917static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
1918 __u8 lsr, __u8 data)
1919{
1920 __u8 newLsr = (__u8) (lsr & (__u8)
1921 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1922 struct async_icount *icount;
1923
1924 edge_port->shadowLSR = lsr;
1925
1926 if (newLsr & LSR_BREAK) {
1927 /*
1928 * Parity and Framing errors only count if they
1929 * occur exclusive of a break being
1930 * received.
1931 */
1932 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1933 }
1934
1935 /* Place LSR data byte into Rx buffer */
1936 if (lsrData)
1937 edge_tty_recv(edge_port->port, &data, 1);
1938
1939 /* update input line counters */
1940 icount = &edge_port->port->icount;
1941 if (newLsr & LSR_BREAK)
1942 icount->brk++;
1943 if (newLsr & LSR_OVER_ERR)
1944 icount->overrun++;
1945 if (newLsr & LSR_PAR_ERR)
1946 icount->parity++;
1947 if (newLsr & LSR_FRM_ERR)
1948 icount->frame++;
1949}
1950
1951
1952/****************************************************************************
1953 * sram_write
1954 * writes a number of bytes to the Edgeport device's sram starting at the
1955 * given address.
1956 * If successful returns the number of bytes written, otherwise it returns
1957 * a negative error number of the problem.
1958 ****************************************************************************/
1959static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
1960 __u16 length, const __u8 *data)
1961{
1962 int result;
1963 __u16 current_length;
1964 unsigned char *transfer_buffer;
1965
1966 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
1967
1968 transfer_buffer = kmalloc(64, GFP_KERNEL);
1969 if (!transfer_buffer)
1970 return -ENOMEM;
1971
1972 /* need to split these writes up into 64 byte chunks */
1973 result = 0;
1974 while (length > 0) {
1975 if (length > 64)
1976 current_length = 64;
1977 else
1978 current_length = length;
1979
1980/* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
1981 memcpy(transfer_buffer, data, current_length);
1982 result = usb_control_msg(serial->dev,
1983 usb_sndctrlpipe(serial->dev, 0),
1984 USB_REQUEST_ION_WRITE_RAM,
1985 0x40, addr, extAddr, transfer_buffer,
1986 current_length, 300);
1987 if (result < 0)
1988 break;
1989 length -= current_length;
1990 addr += current_length;
1991 data += current_length;
1992 }
1993
1994 kfree(transfer_buffer);
1995 return result;
1996}
1997
1998
1999/****************************************************************************
2000 * rom_write
2001 * writes a number of bytes to the Edgeport device's ROM starting at the
2002 * given address.
2003 * If successful returns the number of bytes written, otherwise it returns
2004 * a negative error number of the problem.
2005 ****************************************************************************/
2006static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2007 __u16 length, const __u8 *data)
2008{
2009 int result;
2010 __u16 current_length;
2011 unsigned char *transfer_buffer;
2012
2013 transfer_buffer = kmalloc(64, GFP_KERNEL);
2014 if (!transfer_buffer)
2015 return -ENOMEM;
2016
2017 /* need to split these writes up into 64 byte chunks */
2018 result = 0;
2019 while (length > 0) {
2020 if (length > 64)
2021 current_length = 64;
2022 else
2023 current_length = length;
2024 memcpy(transfer_buffer, data, current_length);
2025 result = usb_control_msg(serial->dev,
2026 usb_sndctrlpipe(serial->dev, 0),
2027 USB_REQUEST_ION_WRITE_ROM, 0x40,
2028 addr, extAddr,
2029 transfer_buffer, current_length, 300);
2030 if (result < 0)
2031 break;
2032 length -= current_length;
2033 addr += current_length;
2034 data += current_length;
2035 }
2036
2037 kfree(transfer_buffer);
2038 return result;
2039}
2040
2041
2042/****************************************************************************
2043 * rom_read
2044 * reads a number of bytes from the Edgeport device starting at the given
2045 * address.
2046 * Returns zero on success or a negative error number.
2047 ****************************************************************************/
2048static int rom_read(struct usb_serial *serial, __u16 extAddr,
2049 __u16 addr, __u16 length, __u8 *data)
2050{
2051 int result;
2052 __u16 current_length;
2053 unsigned char *transfer_buffer;
2054
2055 transfer_buffer = kmalloc(64, GFP_KERNEL);
2056 if (!transfer_buffer)
2057 return -ENOMEM;
2058
2059 /* need to split these reads up into 64 byte chunks */
2060 result = 0;
2061 while (length > 0) {
2062 if (length > 64)
2063 current_length = 64;
2064 else
2065 current_length = length;
2066 result = usb_control_msg(serial->dev,
2067 usb_rcvctrlpipe(serial->dev, 0),
2068 USB_REQUEST_ION_READ_ROM,
2069 0xC0, addr, extAddr, transfer_buffer,
2070 current_length, 300);
2071 if (result < current_length) {
2072 if (result >= 0)
2073 result = -EIO;
2074 break;
2075 }
2076 memcpy(data, transfer_buffer, current_length);
2077 length -= current_length;
2078 addr += current_length;
2079 data += current_length;
2080
2081 result = 0;
2082 }
2083
2084 kfree(transfer_buffer);
2085 return result;
2086}
2087
2088
2089/****************************************************************************
2090 * send_iosp_ext_cmd
2091 * Is used to send a IOSP message to the Edgeport device
2092 ****************************************************************************/
2093static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2094 __u8 command, __u8 param)
2095{
2096 unsigned char *buffer;
2097 unsigned char *currentCommand;
2098 int length = 0;
2099 int status = 0;
2100
2101 buffer = kmalloc(10, GFP_ATOMIC);
2102 if (!buffer)
2103 return -ENOMEM;
2104
2105 currentCommand = buffer;
2106
2107 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number,
2108 command, param);
2109
2110 status = write_cmd_usb(edge_port, buffer, length);
2111 if (status) {
2112 /* something bad happened, let's free up the memory */
2113 kfree(buffer);
2114 }
2115
2116 return status;
2117}
2118
2119
2120/*****************************************************************************
2121 * write_cmd_usb
2122 * this function writes the given buffer out to the bulk write endpoint.
2123 *****************************************************************************/
2124static int write_cmd_usb(struct edgeport_port *edge_port,
2125 unsigned char *buffer, int length)
2126{
2127 struct edgeport_serial *edge_serial =
2128 usb_get_serial_data(edge_port->port->serial);
2129 struct device *dev = &edge_port->port->dev;
2130 int status = 0;
2131 struct urb *urb;
2132
2133 usb_serial_debug_data(dev, __func__, length, buffer);
2134
2135 /* Allocate our next urb */
2136 urb = usb_alloc_urb(0, GFP_ATOMIC);
2137 if (!urb)
2138 return -ENOMEM;
2139
2140 atomic_inc(&CmdUrbs);
2141 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2142 __func__, urb, atomic_read(&CmdUrbs));
2143
2144 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2145 usb_sndbulkpipe(edge_serial->serial->dev,
2146 edge_serial->bulk_out_endpoint),
2147 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2148
2149 edge_port->commandPending = true;
2150 status = usb_submit_urb(urb, GFP_ATOMIC);
2151
2152 if (status) {
2153 /* something went wrong */
2154 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2155 __func__, status);
2156 usb_free_urb(urb);
2157 atomic_dec(&CmdUrbs);
2158 return status;
2159 }
2160
2161#if 0
2162 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2163
2164 if (edge_port->commandPending) {
2165 /* command timed out */
2166 dev_dbg(dev, "%s - command timed out\n", __func__);
2167 status = -EINVAL;
2168 }
2169#endif
2170 return status;
2171}
2172
2173
2174/*****************************************************************************
2175 * send_cmd_write_baud_rate
2176 * this function sends the proper command to change the baud rate of the
2177 * specified port.
2178 *****************************************************************************/
2179static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2180 int baudRate)
2181{
2182 struct edgeport_serial *edge_serial =
2183 usb_get_serial_data(edge_port->port->serial);
2184 struct device *dev = &edge_port->port->dev;
2185 unsigned char *cmdBuffer;
2186 unsigned char *currCmd;
2187 int cmdLen = 0;
2188 int divisor;
2189 int status;
2190 u32 number = edge_port->port->port_number;
2191
2192 if (edge_serial->is_epic &&
2193 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2194 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2195 baudRate);
2196 return 0;
2197 }
2198
2199 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
2200
2201 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
2202 if (status) {
2203 dev_err(dev, "%s - bad baud rate\n", __func__);
2204 return status;
2205 }
2206
2207 /* Alloc memory for the string of commands. */
2208 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2209 if (!cmdBuffer)
2210 return -ENOMEM;
2211
2212 currCmd = cmdBuffer;
2213
2214 /* Enable access to divisor latch */
2215 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2216
2217 /* Write the divisor itself */
2218 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2219 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2220
2221 /* Restore original value to disable access to divisor latch */
2222 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2223 edge_port->shadowLCR);
2224
2225 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2226 if (status) {
2227 /* something bad happened, let's free up the memory */
2228 kfree(cmdBuffer);
2229 }
2230
2231 return status;
2232}
2233
2234
2235/*****************************************************************************
2236 * calc_baud_rate_divisor
2237 * this function calculates the proper baud rate divisor for the specified
2238 * baud rate.
2239 *****************************************************************************/
2240static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
2241{
2242 int i;
2243 __u16 custom;
2244
2245 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2246 if (divisor_table[i].BaudRate == baudrate) {
2247 *divisor = divisor_table[i].Divisor;
2248 return 0;
2249 }
2250 }
2251
2252 /* We have tried all of the standard baud rates
2253 * lets try to calculate the divisor for this baud rate
2254 * Make sure the baud rate is reasonable */
2255 if (baudrate > 50 && baudrate < 230400) {
2256 /* get divisor */
2257 custom = (__u16)((230400L + baudrate/2) / baudrate);
2258
2259 *divisor = custom;
2260
2261 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
2262 return 0;
2263 }
2264
2265 return -1;
2266}
2267
2268
2269/*****************************************************************************
2270 * send_cmd_write_uart_register
2271 * this function builds up a uart register message and sends to the device.
2272 *****************************************************************************/
2273static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2274 __u8 regNum, __u8 regValue)
2275{
2276 struct edgeport_serial *edge_serial =
2277 usb_get_serial_data(edge_port->port->serial);
2278 struct device *dev = &edge_port->port->dev;
2279 unsigned char *cmdBuffer;
2280 unsigned char *currCmd;
2281 unsigned long cmdLen = 0;
2282 int status;
2283
2284 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2285 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2286
2287 if (edge_serial->is_epic &&
2288 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2289 regNum == MCR) {
2290 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2291 return 0;
2292 }
2293
2294 if (edge_serial->is_epic &&
2295 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2296 regNum == LCR) {
2297 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2298 return 0;
2299 }
2300
2301 /* Alloc memory for the string of commands. */
2302 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2303 if (cmdBuffer == NULL)
2304 return -ENOMEM;
2305
2306 currCmd = cmdBuffer;
2307
2308 /* Build a cmd in the buffer to write the given register */
2309 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2310 regNum, regValue);
2311
2312 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2313 if (status) {
2314 /* something bad happened, let's free up the memory */
2315 kfree(cmdBuffer);
2316 }
2317
2318 return status;
2319}
2320
2321
2322/*****************************************************************************
2323 * change_port_settings
2324 * This routine is called to set the UART on the device to match the
2325 * specified new settings.
2326 *****************************************************************************/
2327
2328static void change_port_settings(struct tty_struct *tty,
2329 struct edgeport_port *edge_port, const struct ktermios *old_termios)
2330{
2331 struct device *dev = &edge_port->port->dev;
2332 struct edgeport_serial *edge_serial =
2333 usb_get_serial_data(edge_port->port->serial);
2334 int baud;
2335 unsigned cflag;
2336 __u8 mask = 0xff;
2337 __u8 lData;
2338 __u8 lParity;
2339 __u8 lStop;
2340 __u8 rxFlow;
2341 __u8 txFlow;
2342 int status;
2343
2344 if (!edge_port->open &&
2345 !edge_port->openPending) {
2346 dev_dbg(dev, "%s - port not opened\n", __func__);
2347 return;
2348 }
2349
2350 cflag = tty->termios.c_cflag;
2351
2352 switch (cflag & CSIZE) {
2353 case CS5:
2354 lData = LCR_BITS_5; mask = 0x1f;
2355 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2356 break;
2357 case CS6:
2358 lData = LCR_BITS_6; mask = 0x3f;
2359 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2360 break;
2361 case CS7:
2362 lData = LCR_BITS_7; mask = 0x7f;
2363 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2364 break;
2365 default:
2366 case CS8:
2367 lData = LCR_BITS_8;
2368 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2369 break;
2370 }
2371
2372 lParity = LCR_PAR_NONE;
2373 if (cflag & PARENB) {
2374 if (cflag & CMSPAR) {
2375 if (cflag & PARODD) {
2376 lParity = LCR_PAR_MARK;
2377 dev_dbg(dev, "%s - parity = mark\n", __func__);
2378 } else {
2379 lParity = LCR_PAR_SPACE;
2380 dev_dbg(dev, "%s - parity = space\n", __func__);
2381 }
2382 } else if (cflag & PARODD) {
2383 lParity = LCR_PAR_ODD;
2384 dev_dbg(dev, "%s - parity = odd\n", __func__);
2385 } else {
2386 lParity = LCR_PAR_EVEN;
2387 dev_dbg(dev, "%s - parity = even\n", __func__);
2388 }
2389 } else {
2390 dev_dbg(dev, "%s - parity = none\n", __func__);
2391 }
2392
2393 if (cflag & CSTOPB) {
2394 lStop = LCR_STOP_2;
2395 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2396 } else {
2397 lStop = LCR_STOP_1;
2398 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2399 }
2400
2401 /* figure out the flow control settings */
2402 rxFlow = txFlow = 0x00;
2403 if (cflag & CRTSCTS) {
2404 rxFlow |= IOSP_RX_FLOW_RTS;
2405 txFlow |= IOSP_TX_FLOW_CTS;
2406 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2407 } else {
2408 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2409 }
2410
2411 /* if we are implementing XON/XOFF, set the start and stop character
2412 in the device */
2413 if (I_IXOFF(tty) || I_IXON(tty)) {
2414 unsigned char stop_char = STOP_CHAR(tty);
2415 unsigned char start_char = START_CHAR(tty);
2416
2417 if (!edge_serial->is_epic ||
2418 edge_serial->epic_descriptor.Supports.IOSPSetXChar) {
2419 send_iosp_ext_cmd(edge_port,
2420 IOSP_CMD_SET_XON_CHAR, start_char);
2421 send_iosp_ext_cmd(edge_port,
2422 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2423 }
2424
2425 /* if we are implementing INBOUND XON/XOFF */
2426 if (I_IXOFF(tty)) {
2427 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2428 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2429 __func__, start_char, stop_char);
2430 } else {
2431 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2432 }
2433
2434 /* if we are implementing OUTBOUND XON/XOFF */
2435 if (I_IXON(tty)) {
2436 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2437 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2438 __func__, start_char, stop_char);
2439 } else {
2440 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2441 }
2442 }
2443
2444 /* Set flow control to the configured value */
2445 if (!edge_serial->is_epic ||
2446 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)
2447 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2448 if (!edge_serial->is_epic ||
2449 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)
2450 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2451
2452
2453 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2454 edge_port->shadowLCR |= (lData | lParity | lStop);
2455
2456 edge_port->validDataMask = mask;
2457
2458 /* Send the updated LCR value to the EdgePort */
2459 status = send_cmd_write_uart_register(edge_port, LCR,
2460 edge_port->shadowLCR);
2461 if (status != 0)
2462 return;
2463
2464 /* set up the MCR register and send it to the EdgePort */
2465 edge_port->shadowMCR = MCR_MASTER_IE;
2466 if (cflag & CBAUD)
2467 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2468
2469 status = send_cmd_write_uart_register(edge_port, MCR,
2470 edge_port->shadowMCR);
2471 if (status != 0)
2472 return;
2473
2474 /* Determine divisor based on baud rate */
2475 baud = tty_get_baud_rate(tty);
2476 if (!baud) {
2477 /* pick a default, any default... */
2478 baud = 9600;
2479 }
2480
2481 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
2482 status = send_cmd_write_baud_rate(edge_port, baud);
2483 if (status == -1) {
2484 /* Speed change was not possible - put back the old speed */
2485 baud = tty_termios_baud_rate(old_termios);
2486 tty_encode_baud_rate(tty, baud, baud);
2487 }
2488}
2489
2490
2491/****************************************************************************
2492 * unicode_to_ascii
2493 * Turns a string from Unicode into ASCII.
2494 * Doesn't do a good job with any characters that are outside the normal
2495 * ASCII range, but it's only for debugging...
2496 * NOTE: expects the unicode in LE format
2497 ****************************************************************************/
2498static void unicode_to_ascii(char *string, int buflen,
2499 __le16 *unicode, int unicode_size)
2500{
2501 int i;
2502
2503 if (buflen <= 0) /* never happens, but... */
2504 return;
2505 --buflen; /* space for nul */
2506
2507 for (i = 0; i < unicode_size; i++) {
2508 if (i >= buflen)
2509 break;
2510 string[i] = (char)(le16_to_cpu(unicode[i]));
2511 }
2512 string[i] = 0x00;
2513}
2514
2515
2516/****************************************************************************
2517 * get_manufacturing_desc
2518 * reads in the manufacturing descriptor and stores it into the serial
2519 * structure.
2520 ****************************************************************************/
2521static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2522{
2523 struct device *dev = &edge_serial->serial->dev->dev;
2524 int response;
2525
2526 dev_dbg(dev, "getting manufacturer descriptor\n");
2527
2528 response = rom_read(edge_serial->serial,
2529 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2530 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2531 EDGE_MANUF_DESC_LEN,
2532 (__u8 *)(&edge_serial->manuf_descriptor));
2533
2534 if (response < 0) {
2535 dev_err(dev, "error in getting manufacturer descriptor: %d\n",
2536 response);
2537 } else {
2538 char string[30];
2539 dev_dbg(dev, "**Manufacturer Descriptor\n");
2540 dev_dbg(dev, " RomSize: %dK\n",
2541 edge_serial->manuf_descriptor.RomSize);
2542 dev_dbg(dev, " RamSize: %dK\n",
2543 edge_serial->manuf_descriptor.RamSize);
2544 dev_dbg(dev, " CpuRev: %d\n",
2545 edge_serial->manuf_descriptor.CpuRev);
2546 dev_dbg(dev, " BoardRev: %d\n",
2547 edge_serial->manuf_descriptor.BoardRev);
2548 dev_dbg(dev, " NumPorts: %d\n",
2549 edge_serial->manuf_descriptor.NumPorts);
2550 dev_dbg(dev, " DescDate: %d/%d/%d\n",
2551 edge_serial->manuf_descriptor.DescDate[0],
2552 edge_serial->manuf_descriptor.DescDate[1],
2553 edge_serial->manuf_descriptor.DescDate[2]+1900);
2554 unicode_to_ascii(string, sizeof(string),
2555 edge_serial->manuf_descriptor.SerialNumber,
2556 edge_serial->manuf_descriptor.SerNumLength/2);
2557 dev_dbg(dev, " SerialNumber: %s\n", string);
2558 unicode_to_ascii(string, sizeof(string),
2559 edge_serial->manuf_descriptor.AssemblyNumber,
2560 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2561 dev_dbg(dev, " AssemblyNumber: %s\n", string);
2562 unicode_to_ascii(string, sizeof(string),
2563 edge_serial->manuf_descriptor.OemAssyNumber,
2564 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2565 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2566 dev_dbg(dev, " UartType: %d\n",
2567 edge_serial->manuf_descriptor.UartType);
2568 dev_dbg(dev, " IonPid: %d\n",
2569 edge_serial->manuf_descriptor.IonPid);
2570 dev_dbg(dev, " IonConfig: %d\n",
2571 edge_serial->manuf_descriptor.IonConfig);
2572 }
2573}
2574
2575
2576/****************************************************************************
2577 * get_boot_desc
2578 * reads in the bootloader descriptor and stores it into the serial
2579 * structure.
2580 ****************************************************************************/
2581static void get_boot_desc(struct edgeport_serial *edge_serial)
2582{
2583 struct device *dev = &edge_serial->serial->dev->dev;
2584 int response;
2585
2586 dev_dbg(dev, "getting boot descriptor\n");
2587
2588 response = rom_read(edge_serial->serial,
2589 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2590 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2591 EDGE_BOOT_DESC_LEN,
2592 (__u8 *)(&edge_serial->boot_descriptor));
2593
2594 if (response < 0) {
2595 dev_err(dev, "error in getting boot descriptor: %d\n",
2596 response);
2597 } else {
2598 dev_dbg(dev, "**Boot Descriptor:\n");
2599 dev_dbg(dev, " BootCodeLength: %d\n",
2600 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2601 dev_dbg(dev, " MajorVersion: %d\n",
2602 edge_serial->boot_descriptor.MajorVersion);
2603 dev_dbg(dev, " MinorVersion: %d\n",
2604 edge_serial->boot_descriptor.MinorVersion);
2605 dev_dbg(dev, " BuildNumber: %d\n",
2606 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2607 dev_dbg(dev, " Capabilities: 0x%x\n",
2608 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2609 dev_dbg(dev, " UConfig0: %d\n",
2610 edge_serial->boot_descriptor.UConfig0);
2611 dev_dbg(dev, " UConfig1: %d\n",
2612 edge_serial->boot_descriptor.UConfig1);
2613 }
2614}
2615
2616
2617/****************************************************************************
2618 * load_application_firmware
2619 * This is called to load the application firmware to the device
2620 ****************************************************************************/
2621static void load_application_firmware(struct edgeport_serial *edge_serial)
2622{
2623 struct device *dev = &edge_serial->serial->dev->dev;
2624 const struct ihex_binrec *rec;
2625 const struct firmware *fw;
2626 const char *fw_name;
2627 const char *fw_info;
2628 int response;
2629 __u32 Operaddr;
2630 __u16 build;
2631
2632 switch (edge_serial->product_info.iDownloadFile) {
2633 case EDGE_DOWNLOAD_FILE_I930:
2634 fw_info = "downloading firmware version (930)";
2635 fw_name = "edgeport/down.fw";
2636 break;
2637
2638 case EDGE_DOWNLOAD_FILE_80251:
2639 fw_info = "downloading firmware version (80251)";
2640 fw_name = "edgeport/down2.fw";
2641 break;
2642
2643 case EDGE_DOWNLOAD_FILE_NONE:
2644 dev_dbg(dev, "No download file specified, skipping download\n");
2645 return;
2646
2647 default:
2648 return;
2649 }
2650
2651 response = request_ihex_firmware(&fw, fw_name,
2652 &edge_serial->serial->dev->dev);
2653 if (response) {
2654 dev_err(dev, "Failed to load image \"%s\" err %d\n",
2655 fw_name, response);
2656 return;
2657 }
2658
2659 rec = (const struct ihex_binrec *)fw->data;
2660 build = (rec->data[2] << 8) | rec->data[3];
2661
2662 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
2663
2664 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2665 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2666 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2667
2668 for (rec = ihex_next_binrec(rec); rec;
2669 rec = ihex_next_binrec(rec)) {
2670 Operaddr = be32_to_cpu(rec->addr);
2671 response = sram_write(edge_serial->serial,
2672 Operaddr >> 16,
2673 Operaddr & 0xFFFF,
2674 be16_to_cpu(rec->len),
2675 &rec->data[0]);
2676 if (response < 0) {
2677 dev_err(&edge_serial->serial->dev->dev,
2678 "sram_write failed (%x, %x, %d)\n",
2679 Operaddr >> 16, Operaddr & 0xFFFF,
2680 be16_to_cpu(rec->len));
2681 break;
2682 }
2683 }
2684
2685 dev_dbg(dev, "sending exec_dl_code\n");
2686 response = usb_control_msg (edge_serial->serial->dev,
2687 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2688 USB_REQUEST_ION_EXEC_DL_CODE,
2689 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2690
2691 release_firmware(fw);
2692}
2693
2694
2695/****************************************************************************
2696 * edge_startup
2697 ****************************************************************************/
2698static int edge_startup(struct usb_serial *serial)
2699{
2700 struct edgeport_serial *edge_serial;
2701 struct usb_device *dev;
2702 struct device *ddev = &serial->dev->dev;
2703 int i;
2704 int response;
2705 bool interrupt_in_found;
2706 bool bulk_in_found;
2707 bool bulk_out_found;
2708 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2709 EDGE_COMPATIBILITY_MASK1,
2710 EDGE_COMPATIBILITY_MASK2 };
2711
2712 dev = serial->dev;
2713
2714 /* create our private serial structure */
2715 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2716 if (!edge_serial)
2717 return -ENOMEM;
2718
2719 spin_lock_init(&edge_serial->es_lock);
2720 edge_serial->serial = serial;
2721 usb_set_serial_data(serial, edge_serial);
2722
2723 /* get the name for the device from the device */
2724 i = usb_string(dev, dev->descriptor.iManufacturer,
2725 &edge_serial->name[0], MAX_NAME_LEN+1);
2726 if (i < 0)
2727 i = 0;
2728 edge_serial->name[i++] = ' ';
2729 usb_string(dev, dev->descriptor.iProduct,
2730 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2731
2732 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2733
2734 /* Read the epic descriptor */
2735 if (get_epic_descriptor(edge_serial) < 0) {
2736 /* memcpy descriptor to Supports structures */
2737 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2738 sizeof(struct edge_compatibility_bits));
2739
2740 /* get the manufacturing descriptor for this device */
2741 get_manufacturing_desc(edge_serial);
2742
2743 /* get the boot descriptor */
2744 get_boot_desc(edge_serial);
2745
2746 get_product_info(edge_serial);
2747 }
2748
2749 /* set the number of ports from the manufacturing description */
2750 /* serial->num_ports = serial->product_info.NumPorts; */
2751 if ((!edge_serial->is_epic) &&
2752 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2753 dev_warn(ddev,
2754 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2755 edge_serial->product_info.NumPorts,
2756 serial->num_ports);
2757 }
2758
2759 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
2760
2761 /* If not an EPiC device */
2762 if (!edge_serial->is_epic) {
2763 /* now load the application firmware into this device */
2764 load_application_firmware(edge_serial);
2765
2766 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
2767
2768 /* Check current Edgeport EEPROM and update if necessary */
2769 update_edgeport_E2PROM(edge_serial);
2770
2771 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
2772
2773 /* set the configuration to use #1 */
2774/* dev_dbg(ddev, "set_configuration 1\n"); */
2775/* usb_set_configuration (dev, 1); */
2776 }
2777 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
2778 edge_serial->product_info.FirmwareMajorVersion,
2779 edge_serial->product_info.FirmwareMinorVersion,
2780 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
2781
2782 /* we set up the pointers to the endpoints in the edge_open function,
2783 * as the structures aren't created yet. */
2784
2785 response = 0;
2786
2787 if (edge_serial->is_epic) {
2788 struct usb_host_interface *alt;
2789
2790 alt = serial->interface->cur_altsetting;
2791
2792 /* EPIC thing, set up our interrupt polling now and our read
2793 * urb, so that the device knows it really is connected. */
2794 interrupt_in_found = bulk_in_found = bulk_out_found = false;
2795 for (i = 0; i < alt->desc.bNumEndpoints; ++i) {
2796 struct usb_endpoint_descriptor *endpoint;
2797 int buffer_size;
2798
2799 endpoint = &alt->endpoint[i].desc;
2800 buffer_size = usb_endpoint_maxp(endpoint);
2801 if (!interrupt_in_found &&
2802 (usb_endpoint_is_int_in(endpoint))) {
2803 /* we found a interrupt in endpoint */
2804 dev_dbg(ddev, "found interrupt in\n");
2805
2806 /* not set up yet, so do it now */
2807 edge_serial->interrupt_read_urb =
2808 usb_alloc_urb(0, GFP_KERNEL);
2809 if (!edge_serial->interrupt_read_urb) {
2810 response = -ENOMEM;
2811 break;
2812 }
2813
2814 edge_serial->interrupt_in_buffer =
2815 kmalloc(buffer_size, GFP_KERNEL);
2816 if (!edge_serial->interrupt_in_buffer) {
2817 response = -ENOMEM;
2818 break;
2819 }
2820 edge_serial->interrupt_in_endpoint =
2821 endpoint->bEndpointAddress;
2822
2823 /* set up our interrupt urb */
2824 usb_fill_int_urb(
2825 edge_serial->interrupt_read_urb,
2826 dev,
2827 usb_rcvintpipe(dev,
2828 endpoint->bEndpointAddress),
2829 edge_serial->interrupt_in_buffer,
2830 buffer_size,
2831 edge_interrupt_callback,
2832 edge_serial,
2833 endpoint->bInterval);
2834
2835 interrupt_in_found = true;
2836 }
2837
2838 if (!bulk_in_found &&
2839 (usb_endpoint_is_bulk_in(endpoint))) {
2840 /* we found a bulk in endpoint */
2841 dev_dbg(ddev, "found bulk in\n");
2842
2843 /* not set up yet, so do it now */
2844 edge_serial->read_urb =
2845 usb_alloc_urb(0, GFP_KERNEL);
2846 if (!edge_serial->read_urb) {
2847 response = -ENOMEM;
2848 break;
2849 }
2850
2851 edge_serial->bulk_in_buffer =
2852 kmalloc(buffer_size, GFP_KERNEL);
2853 if (!edge_serial->bulk_in_buffer) {
2854 response = -ENOMEM;
2855 break;
2856 }
2857 edge_serial->bulk_in_endpoint =
2858 endpoint->bEndpointAddress;
2859
2860 /* set up our bulk in urb */
2861 usb_fill_bulk_urb(edge_serial->read_urb, dev,
2862 usb_rcvbulkpipe(dev,
2863 endpoint->bEndpointAddress),
2864 edge_serial->bulk_in_buffer,
2865 usb_endpoint_maxp(endpoint),
2866 edge_bulk_in_callback,
2867 edge_serial);
2868 bulk_in_found = true;
2869 }
2870
2871 if (!bulk_out_found &&
2872 (usb_endpoint_is_bulk_out(endpoint))) {
2873 /* we found a bulk out endpoint */
2874 dev_dbg(ddev, "found bulk out\n");
2875 edge_serial->bulk_out_endpoint =
2876 endpoint->bEndpointAddress;
2877 bulk_out_found = true;
2878 }
2879 }
2880
2881 if (response || !interrupt_in_found || !bulk_in_found ||
2882 !bulk_out_found) {
2883 if (!response) {
2884 dev_err(ddev, "expected endpoints not found\n");
2885 response = -ENODEV;
2886 }
2887
2888 goto error;
2889 }
2890
2891 /* start interrupt read for this edgeport this interrupt will
2892 * continue as long as the edgeport is connected */
2893 response = usb_submit_urb(edge_serial->interrupt_read_urb,
2894 GFP_KERNEL);
2895 if (response) {
2896 dev_err(ddev, "%s - Error %d submitting control urb\n",
2897 __func__, response);
2898
2899 goto error;
2900 }
2901 }
2902 return response;
2903
2904error:
2905 usb_free_urb(edge_serial->interrupt_read_urb);
2906 kfree(edge_serial->interrupt_in_buffer);
2907
2908 usb_free_urb(edge_serial->read_urb);
2909 kfree(edge_serial->bulk_in_buffer);
2910
2911 kfree(edge_serial);
2912
2913 return response;
2914}
2915
2916
2917/****************************************************************************
2918 * edge_disconnect
2919 * This function is called whenever the device is removed from the usb bus.
2920 ****************************************************************************/
2921static void edge_disconnect(struct usb_serial *serial)
2922{
2923 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2924
2925 if (edge_serial->is_epic) {
2926 usb_kill_urb(edge_serial->interrupt_read_urb);
2927 usb_kill_urb(edge_serial->read_urb);
2928 }
2929}
2930
2931
2932/****************************************************************************
2933 * edge_release
2934 * This function is called when the device structure is deallocated.
2935 ****************************************************************************/
2936static void edge_release(struct usb_serial *serial)
2937{
2938 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2939
2940 if (edge_serial->is_epic) {
2941 usb_kill_urb(edge_serial->interrupt_read_urb);
2942 usb_free_urb(edge_serial->interrupt_read_urb);
2943 kfree(edge_serial->interrupt_in_buffer);
2944
2945 usb_kill_urb(edge_serial->read_urb);
2946 usb_free_urb(edge_serial->read_urb);
2947 kfree(edge_serial->bulk_in_buffer);
2948 }
2949
2950 kfree(edge_serial);
2951}
2952
2953static int edge_port_probe(struct usb_serial_port *port)
2954{
2955 struct edgeport_port *edge_port;
2956
2957 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2958 if (!edge_port)
2959 return -ENOMEM;
2960
2961 spin_lock_init(&edge_port->ep_lock);
2962 edge_port->port = port;
2963
2964 usb_set_serial_port_data(port, edge_port);
2965
2966 return 0;
2967}
2968
2969static void edge_port_remove(struct usb_serial_port *port)
2970{
2971 struct edgeport_port *edge_port;
2972
2973 edge_port = usb_get_serial_port_data(port);
2974 kfree(edge_port);
2975}
2976
2977static struct usb_serial_driver edgeport_2port_device = {
2978 .driver = {
2979 .owner = THIS_MODULE,
2980 .name = "edgeport_2",
2981 },
2982 .description = "Edgeport 2 port adapter",
2983 .id_table = edgeport_2port_id_table,
2984 .num_ports = 2,
2985 .num_bulk_in = 1,
2986 .num_bulk_out = 1,
2987 .num_interrupt_in = 1,
2988 .open = edge_open,
2989 .close = edge_close,
2990 .throttle = edge_throttle,
2991 .unthrottle = edge_unthrottle,
2992 .attach = edge_startup,
2993 .disconnect = edge_disconnect,
2994 .release = edge_release,
2995 .port_probe = edge_port_probe,
2996 .port_remove = edge_port_remove,
2997 .ioctl = edge_ioctl,
2998 .set_termios = edge_set_termios,
2999 .tiocmget = edge_tiocmget,
3000 .tiocmset = edge_tiocmset,
3001 .tiocmiwait = usb_serial_generic_tiocmiwait,
3002 .get_icount = usb_serial_generic_get_icount,
3003 .write = edge_write,
3004 .write_room = edge_write_room,
3005 .chars_in_buffer = edge_chars_in_buffer,
3006 .break_ctl = edge_break,
3007 .read_int_callback = edge_interrupt_callback,
3008 .read_bulk_callback = edge_bulk_in_callback,
3009 .write_bulk_callback = edge_bulk_out_data_callback,
3010};
3011
3012static struct usb_serial_driver edgeport_4port_device = {
3013 .driver = {
3014 .owner = THIS_MODULE,
3015 .name = "edgeport_4",
3016 },
3017 .description = "Edgeport 4 port adapter",
3018 .id_table = edgeport_4port_id_table,
3019 .num_ports = 4,
3020 .num_bulk_in = 1,
3021 .num_bulk_out = 1,
3022 .num_interrupt_in = 1,
3023 .open = edge_open,
3024 .close = edge_close,
3025 .throttle = edge_throttle,
3026 .unthrottle = edge_unthrottle,
3027 .attach = edge_startup,
3028 .disconnect = edge_disconnect,
3029 .release = edge_release,
3030 .port_probe = edge_port_probe,
3031 .port_remove = edge_port_remove,
3032 .ioctl = edge_ioctl,
3033 .set_termios = edge_set_termios,
3034 .tiocmget = edge_tiocmget,
3035 .tiocmset = edge_tiocmset,
3036 .tiocmiwait = usb_serial_generic_tiocmiwait,
3037 .get_icount = usb_serial_generic_get_icount,
3038 .write = edge_write,
3039 .write_room = edge_write_room,
3040 .chars_in_buffer = edge_chars_in_buffer,
3041 .break_ctl = edge_break,
3042 .read_int_callback = edge_interrupt_callback,
3043 .read_bulk_callback = edge_bulk_in_callback,
3044 .write_bulk_callback = edge_bulk_out_data_callback,
3045};
3046
3047static struct usb_serial_driver edgeport_8port_device = {
3048 .driver = {
3049 .owner = THIS_MODULE,
3050 .name = "edgeport_8",
3051 },
3052 .description = "Edgeport 8 port adapter",
3053 .id_table = edgeport_8port_id_table,
3054 .num_ports = 8,
3055 .num_bulk_in = 1,
3056 .num_bulk_out = 1,
3057 .num_interrupt_in = 1,
3058 .open = edge_open,
3059 .close = edge_close,
3060 .throttle = edge_throttle,
3061 .unthrottle = edge_unthrottle,
3062 .attach = edge_startup,
3063 .disconnect = edge_disconnect,
3064 .release = edge_release,
3065 .port_probe = edge_port_probe,
3066 .port_remove = edge_port_remove,
3067 .ioctl = edge_ioctl,
3068 .set_termios = edge_set_termios,
3069 .tiocmget = edge_tiocmget,
3070 .tiocmset = edge_tiocmset,
3071 .tiocmiwait = usb_serial_generic_tiocmiwait,
3072 .get_icount = usb_serial_generic_get_icount,
3073 .write = edge_write,
3074 .write_room = edge_write_room,
3075 .chars_in_buffer = edge_chars_in_buffer,
3076 .break_ctl = edge_break,
3077 .read_int_callback = edge_interrupt_callback,
3078 .read_bulk_callback = edge_bulk_in_callback,
3079 .write_bulk_callback = edge_bulk_out_data_callback,
3080};
3081
3082static struct usb_serial_driver epic_device = {
3083 .driver = {
3084 .owner = THIS_MODULE,
3085 .name = "epic",
3086 },
3087 .description = "EPiC device",
3088 .id_table = Epic_port_id_table,
3089 .num_ports = 1,
3090 .num_bulk_in = 1,
3091 .num_bulk_out = 1,
3092 .num_interrupt_in = 1,
3093 .open = edge_open,
3094 .close = edge_close,
3095 .throttle = edge_throttle,
3096 .unthrottle = edge_unthrottle,
3097 .attach = edge_startup,
3098 .disconnect = edge_disconnect,
3099 .release = edge_release,
3100 .port_probe = edge_port_probe,
3101 .port_remove = edge_port_remove,
3102 .ioctl = edge_ioctl,
3103 .set_termios = edge_set_termios,
3104 .tiocmget = edge_tiocmget,
3105 .tiocmset = edge_tiocmset,
3106 .tiocmiwait = usb_serial_generic_tiocmiwait,
3107 .get_icount = usb_serial_generic_get_icount,
3108 .write = edge_write,
3109 .write_room = edge_write_room,
3110 .chars_in_buffer = edge_chars_in_buffer,
3111 .break_ctl = edge_break,
3112 .read_int_callback = edge_interrupt_callback,
3113 .read_bulk_callback = edge_bulk_in_callback,
3114 .write_bulk_callback = edge_bulk_out_data_callback,
3115};
3116
3117static struct usb_serial_driver * const serial_drivers[] = {
3118 &edgeport_2port_device, &edgeport_4port_device,
3119 &edgeport_8port_device, &epic_device, NULL
3120};
3121
3122module_usb_serial_driver(serial_drivers, id_table_combined);
3123
3124MODULE_AUTHOR(DRIVER_AUTHOR);
3125MODULE_DESCRIPTION(DRIVER_DESC);
3126MODULE_LICENSE("GPL");
3127MODULE_FIRMWARE("edgeport/boot.fw");
3128MODULE_FIRMWARE("edgeport/boot2.fw");
3129MODULE_FIRMWARE("edgeport/down.fw");
3130MODULE_FIRMWARE("edgeport/down2.fw");