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USB: ehci-dbgp: split PID register updates for IN and OUT pipes
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / serial / io_edgeport.c
CommitLineData
1da177e4
LT		 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 *
1da177e4
LT		 30 */
31
1da177e4
LT		 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>
5b9ea932
JS		 45#include <linux/firmware.h>
46#include <linux/ihex.h>
03f0dbf7 47#include <linux/uaccess.h>
1da177e4 48#include <linux/usb.h>
a969888c 49#include <linux/usb/serial.h>
1da177e4
LT		 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
1da177e4
LT		 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 {
03f0dbf7
AC		 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) */
1da177e4
LT		 73};
74
75
03f0dbf7
AC		 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
1da177e4
LT		 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 */
cb8eaa8b 96 bool write_in_progress; /* 'true' while a write URB is outstanding */
1da177e4
LT		 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
cb8eaa8b
RK		 108 bool open;
109 bool openPending;
110 bool commandPending;
111 bool closePending;
112 bool chaseResponsePending;
1da177e4
LT		 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 {
ad93375a 126 char name[MAX_NAME_LEN+2]; /* string name of this device */
1da177e4
LT		 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 */
6e8cf775
GKH		 131 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
132 int is_epic; /* flag if EPiC device or not */
1da177e4
LT		 133
134 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
03f0dbf7
AC		 135 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
136 struct urb *interrupt_read_urb; /* our interrupt urb */
1da177e4
LT		 137
138 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
03f0dbf7
AC		 139 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
140 struct urb *read_urb; /* our bulk read urb */
cb8eaa8b 141 bool read_in_progress;
1da177e4
LT		 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
03f0dbf7
AC		 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
4c4c9432 171static const struct divisor_table_entry divisor_table[] = {
03f0dbf7
AC		 172 { 50, 4608},
173 { 75, 3072},
174 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
175 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
1da177e4
LT		 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
03f0dbf7 196static atomic_t CmdUrbs; /* Number of outstanding Command Write Urbs */
1da177e4
LT		 197
198
199/* local function prototypes */
200
201/* function prototypes for all URB callbacks */
03f0dbf7
AC		 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);
1da177e4
LT		 206
207/* function prototypes for the usbserial callbacks */
a509a7e4 208static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
335f8514 209static void edge_close(struct usb_serial_port *port);
03f0dbf7
AC		 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, struct file *file,
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, struct file *file);
223static int edge_tiocmset(struct tty_struct *tty, struct file *file,
224 unsigned int set, unsigned int clear);
225static int edge_startup(struct usb_serial *serial);
f9c99bb8
AS		 226static void edge_disconnect(struct usb_serial *serial);
227static void edge_release(struct usb_serial *serial);
1da177e4
LT		 228
229#include "io_tables.h" /* all of the devices that this driver supports */
230
1da177e4 231/* function prototypes for all of our local functions */
03f0dbf7
AC		 232
233static void process_rcvd_data(struct edgeport_serial *edge_serial,
234 unsigned char *buffer, __u16 bufferLength);
235static void process_rcvd_status(struct edgeport_serial *edge_serial,
236 __u8 byte2, __u8 byte3);
237static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
238 unsigned char *data, int length);
239static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
240static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
241 __u8 lsr, __u8 data);
242static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
243 __u8 param);
244static int calc_baud_rate_divisor(int baud_rate, int *divisor);
245static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
246 int baudRate);
247static void change_port_settings(struct tty_struct *tty,
248 struct edgeport_port *edge_port,
249 struct ktermios *old_termios);
250static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
251 __u8 regNum, __u8 regValue);
252static int write_cmd_usb(struct edgeport_port *edge_port,
253 unsigned char *buffer, int writeLength);
254static void send_more_port_data(struct edgeport_serial *edge_serial,
255 struct edgeport_port *edge_port);
256
257static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
258 __u16 length, const __u8 *data);
259static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
260 __u16 length, __u8 *data);
261static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
262 __u16 length, const __u8 *data);
263static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
264static void get_boot_desc(struct edgeport_serial *edge_serial);
265static void load_application_firmware(struct edgeport_serial *edge_serial);
266
267static void unicode_to_ascii(char *string, int buflen,
268 __le16 *unicode, int unicode_size);
269
270
271/* ************************************************************************ */
272/* ************************************************************************ */
273/* ************************************************************************ */
274/* ************************************************************************ */
1da177e4
LT		 275
276/************************************************************************
277 * *
278 * update_edgeport_E2PROM() Compare current versions of *
279 * Boot ROM and Manufacture *
280 * Descriptors with versions *
281 * embedded in this driver *
282 * *
283 ************************************************************************/
03f0dbf7 284static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
1da177e4
LT		 285{
286 __u32 BootCurVer;
287 __u32 BootNewVer;
5b9ea932
JS		 288 __u8 BootMajorVersion;
289 __u8 BootMinorVersion;
290 __u16 BootBuildNumber;
291 __u32 Bootaddr;
292 const struct ihex_binrec *rec;
293 const struct firmware *fw;
294 const char *fw_name;
1da177e4
LT		 295 int response;
296
1da177e4 297 switch (edge_serial->product_info.iDownloadFile) {
03f0dbf7
AC		 298 case EDGE_DOWNLOAD_FILE_I930:
299 fw_name = "edgeport/boot.fw";
300 break;
301 case EDGE_DOWNLOAD_FILE_80251:
302 fw_name = "edgeport/boot2.fw";
303 break;
304 default:
305 return;
1da177e4
LT		 306 }
307
5b9ea932
JS		 308 response = request_ihex_firmware(&fw, fw_name,
309 &edge_serial->serial->dev->dev);
310 if (response) {
311 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
312 fw_name, response);
313 return;
314 }
315
316 rec = (const struct ihex_binrec *)fw->data;
317 BootMajorVersion = rec->data[0];
318 BootMinorVersion = rec->data[1];
319 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
320
03f0dbf7 321 /* Check Boot Image Version */
1da177e4
LT		 322 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
323 (edge_serial->boot_descriptor.MinorVersion << 16) +
324 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
325
326 BootNewVer = (BootMajorVersion << 24) +
327 (BootMinorVersion << 16) +
5b9ea932 328 BootBuildNumber;
1da177e4
LT		 329
330 dbg("Current Boot Image version %d.%d.%d",
331 edge_serial->boot_descriptor.MajorVersion,
332 edge_serial->boot_descriptor.MinorVersion,
333 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
334
335
336 if (BootNewVer > BootCurVer) {
337 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
338 edge_serial->boot_descriptor.MajorVersion,
339 edge_serial->boot_descriptor.MinorVersion,
340 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
5b9ea932 341 BootMajorVersion, BootMinorVersion, BootBuildNumber);
1da177e4
LT		 342
343 dbg("Downloading new Boot Image");
344
5b9ea932
JS		 345 for (rec = ihex_next_binrec(rec); rec;
346 rec = ihex_next_binrec(rec)) {
347 Bootaddr = be32_to_cpu(rec->addr);
348 response = rom_write(edge_serial->serial,
349 Bootaddr >> 16,
350 Bootaddr & 0xFFFF,
351 be16_to_cpu(rec->len),
352 &rec->data[0]);
1da177e4 353 if (response < 0) {
5b9ea932
JS		 354 dev_err(&edge_serial->serial->dev->dev,
355 "rom_write failed (%x, %x, %d)\n",
356 Bootaddr >> 16, Bootaddr & 0xFFFF,
357 be16_to_cpu(rec->len));
1da177e4
LT		 358 break;
359 }
360 }
361 } else {
362 dbg("Boot Image -- already up to date");
363 }
5b9ea932 364 release_firmware(fw);
1da177e4
LT		 365}
366
1da177e4
LT		 367#if 0
368/************************************************************************
369 *
370 * Get string descriptor from device
371 *
372 ************************************************************************/
03f0dbf7
AC		 373static int get_string_desc(struct usb_device *dev, int Id,
374 struct usb_string_descriptor **pRetDesc)
1da177e4
LT		 375{
376 struct usb_string_descriptor StringDesc;
377 struct usb_string_descriptor *pStringDesc;
378
03f0dbf7 379 dbg("%s - USB String ID = %d", __func__, Id);
1da177e4 380
03f0dbf7
AC		 381 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
382 sizeof(StringDesc)))
1da177e4 383 return 0;
1da177e4 384
03f0dbf7
AC		 385 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
386 if (!pStringDesc)
1da177e4 387 return -1;
1da177e4 388
03f0dbf7
AC		 389 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
390 StringDesc.bLength)) {
1da177e4
LT		 391 kfree(pStringDesc);
392 return -1;
393 }
394
395 *pRetDesc = pStringDesc;
396 return 0;
397}
398#endif
399
6e8cf775
GKH		 400static void dump_product_info(struct edgeport_product_info *product_info)
401{
03f0dbf7 402 /* Dump Product Info structure */
6e8cf775 403 dbg("**Product Information:");
03f0dbf7
AC		 404 dbg(" ProductId %x", product_info->ProductId);
405 dbg(" NumPorts %d", product_info->NumPorts);
406 dbg(" ProdInfoVer %d", product_info->ProdInfoVer);
6e8cf775 407 dbg(" IsServer %d", product_info->IsServer);
03f0dbf7
AC		 408 dbg(" IsRS232 %d", product_info->IsRS232);
409 dbg(" IsRS422 %d", product_info->IsRS422);
410 dbg(" IsRS485 %d", product_info->IsRS485);
411 dbg(" RomSize %d", product_info->RomSize);
412 dbg(" RamSize %d", product_info->RamSize);
413 dbg(" CpuRev %x", product_info->CpuRev);
6e8cf775
GKH		 414 dbg(" BoardRev %x", product_info->BoardRev);
415 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion,
416 product_info->BootMinorVersion,
417 le16_to_cpu(product_info->BootBuildNumber));
03f0dbf7
AC		 418 dbg(" FirmwareMajorVersion %d.%d.%d",
419 product_info->FirmwareMajorVersion,
420 product_info->FirmwareMinorVersion,
421 le16_to_cpu(product_info->FirmwareBuildNumber));
422 dbg(" ManufactureDescDate %d/%d/%d",
423 product_info->ManufactureDescDate[0],
424 product_info->ManufactureDescDate[1],
425 product_info->ManufactureDescDate[2]+1900);
6e8cf775
GKH		 426 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile);
427 dbg(" EpicVer %d", product_info->EpicVer);
428}
429
1da177e4
LT		 430static void get_product_info(struct edgeport_serial *edge_serial)
431{
432 struct edgeport_product_info *product_info = &edge_serial->product_info;
433
03f0dbf7
AC		 434 memset(product_info, 0, sizeof(struct edgeport_product_info));
435
436 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
437 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
438 product_info->ProdInfoVer = 0;
439
440 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
441 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
442 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
443 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
444
445 product_info->BootMajorVersion =
446 edge_serial->boot_descriptor.MajorVersion;
447 product_info->BootMinorVersion =
448 edge_serial->boot_descriptor.MinorVersion;
449 product_info->BootBuildNumber =
450 edge_serial->boot_descriptor.BuildNumber;
451
452 memcpy(product_info->ManufactureDescDate,
453 edge_serial->manuf_descriptor.DescDate,
454 sizeof(edge_serial->manuf_descriptor.DescDate));
455
456 /* check if this is 2nd generation hardware */
457 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
458 & ION_DEVICE_ID_80251_NETCHIP)
459 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
460 else
461 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
462
463 /* Determine Product type and set appropriate flags */
1da177e4 464 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
03f0dbf7
AC		 465 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
466 case ION_DEVICE_ID_EDGEPORT_4T:
467 case ION_DEVICE_ID_EDGEPORT_4:
468 case ION_DEVICE_ID_EDGEPORT_2:
469 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
470 case ION_DEVICE_ID_EDGEPORT_8:
471 case ION_DEVICE_ID_EDGEPORT_421:
472 case ION_DEVICE_ID_EDGEPORT_21:
473 case ION_DEVICE_ID_EDGEPORT_2_DIN:
474 case ION_DEVICE_ID_EDGEPORT_4_DIN:
475 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
476 product_info->IsRS232 = 1;
477 break;
1da177e4 478
03f0dbf7
AC		 479 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
480 product_info->IsRS422 = 1;
481 product_info->IsRS485 = 1;
482 break;
1da177e4 483
03f0dbf7
AC		 484 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
485 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
486 product_info->IsRS422 = 1;
487 break;
1da177e4
LT		 488 }
489
6e8cf775
GKH		 490 dump_product_info(product_info);
491}
1da177e4 492
6e8cf775
GKH		 493static int get_epic_descriptor(struct edgeport_serial *ep)
494{
495 int result;
496 struct usb_serial *serial = ep->serial;
497 struct edgeport_product_info *product_info = &ep->product_info;
498 struct edge_compatibility_descriptor *epic = &ep->epic_descriptor;
499 struct edge_compatibility_bits *bits;
500
501 ep->is_epic = 0;
502 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
503 USB_REQUEST_ION_GET_EPIC_DESC,
504 0xC0, 0x00, 0x00,
505 &ep->epic_descriptor,
506 sizeof(struct edge_compatibility_descriptor),
507 300);
508
441b62c1 509 dbg("%s result = %d", __func__, result);
6e8cf775
GKH		 510
511 if (result > 0) {
512 ep->is_epic = 1;
513 memset(product_info, 0, sizeof(struct edgeport_product_info));
514
03f0dbf7
AC		 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;
6e8cf775
GKH		 524 dump_product_info(product_info);
525
526 bits = &ep->epic_descriptor.Supports;
527 dbg("**EPIC descriptor:");
528 dbg(" VendEnableSuspend: %s", bits->VendEnableSuspend ? "TRUE": "FALSE");
03f0dbf7
AC		 529 dbg(" IOSPOpen : %s", bits->IOSPOpen ? "TRUE": "FALSE");
530 dbg(" IOSPClose : %s", bits->IOSPClose ? "TRUE": "FALSE");
531 dbg(" IOSPChase : %s", bits->IOSPChase ? "TRUE": "FALSE");
532 dbg(" IOSPSetRxFlow : %s", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
533 dbg(" IOSPSetTxFlow : %s", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
534 dbg(" IOSPSetXChar : %s", bits->IOSPSetXChar ? "TRUE": "FALSE");
535 dbg(" IOSPRxCheck : %s", bits->IOSPRxCheck ? "TRUE": "FALSE");
536 dbg(" IOSPSetClrBreak : %s", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
537 dbg(" IOSPWriteMCR : %s", bits->IOSPWriteMCR ? "TRUE": "FALSE");
538 dbg(" IOSPWriteLCR : %s", bits->IOSPWriteLCR ? "TRUE": "FALSE");
539 dbg(" IOSPSetBaudRate : %s", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
540 dbg(" TrueEdgeport : %s", bits->TrueEdgeport ? "TRUE": "FALSE");
6e8cf775
GKH		 541 }
542
543 return result;
1da177e4
LT		 544}
545
546
547/************************************************************************/
548/************************************************************************/
549/* U S B C A L L B A C K F U N C T I O N S */
550/* U S B C A L L B A C K F U N C T I O N S */
551/************************************************************************/
552/************************************************************************/
553
554/*****************************************************************************
555 * edge_interrupt_callback
03f0dbf7 556 * this is the callback function for when we have received data on the
1da177e4
LT		 557 * interrupt endpoint.
558 *****************************************************************************/
03f0dbf7 559static void edge_interrupt_callback(struct urb *urb)
1da177e4 560{
cdc97792 561 struct edgeport_serial *edge_serial = urb->context;
1da177e4
LT		 562 struct edgeport_port *edge_port;
563 struct usb_serial_port *port;
4a90f09b 564 struct tty_struct *tty;
1da177e4
LT		 565 unsigned char *data = urb->transfer_buffer;
566 int length = urb->actual_length;
567 int bytes_avail;
568 int position;
569 int txCredits;
570 int portNumber;
571 int result;
2a393f5f 572 int status = urb->status;
1da177e4 573
441b62c1 574 dbg("%s", __func__);
1da177e4 575
2a393f5f 576 switch (status) {
1da177e4
LT		 577 case 0:
578 /* success */
579 break;
580 case -ECONNRESET:
581 case -ENOENT:
582 case -ESHUTDOWN:
583 /* this urb is terminated, clean up */
2a393f5f 584 dbg("%s - urb shutting down with status: %d",
03f0dbf7 585 __func__, status);
1da177e4
LT		 586 return;
587 default:
03f0dbf7 588 dbg("%s - nonzero urb status received: %d", __func__, status);
1da177e4
LT		 589 goto exit;
590 }
591
03f0dbf7 592 /* process this interrupt-read even if there are no ports open */
1da177e4 593 if (length) {
03f0dbf7
AC		 594 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
595 __func__, length, data);
1da177e4
LT		 596
597 if (length > 1) {
598 bytes_avail = data[0] | (data[1] << 8);
599 if (bytes_avail) {
600 spin_lock(&edge_serial->es_lock);
601 edge_serial->rxBytesAvail += bytes_avail;
441b62c1 602 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress);
1da177e4
LT		 603
604 if (edge_serial->rxBytesAvail > 0 &&
605 !edge_serial->read_in_progress) {
441b62c1 606 dbg("%s - posting a read", __func__);
cb8eaa8b 607 edge_serial->read_in_progress = true;
1da177e4 608
03f0dbf7
AC		 609 /* we have pending bytes on the
610 bulk in pipe, send a request */
1da177e4
LT		 611 edge_serial->read_urb->dev = edge_serial->serial->dev;
612 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
613 if (result) {
441b62c1 614 dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result);
cb8eaa8b 615 edge_serial->read_in_progress = false;
1da177e4
LT		 616 }
617 }
618 spin_unlock(&edge_serial->es_lock);
619 }
620 }
621 /* grab the txcredits for the ports if available */
622 position = 2;
623 portNumber = 0;
03f0dbf7
AC		 624 while ((position < length) &&
625 (portNumber < edge_serial->serial->num_ports)) {
1da177e4
LT		 626 txCredits = data[position] | (data[position+1] << 8);
627 if (txCredits) {
628 port = edge_serial->serial->port[portNumber];
629 edge_port = usb_get_serial_port_data(port);
630 if (edge_port->open) {
631 spin_lock(&edge_port->ep_lock);
632 edge_port->txCredits += txCredits;
633 spin_unlock(&edge_port->ep_lock);
03f0dbf7
AC		 634 dbg("%s - txcredits for port%d = %d",
635 __func__, portNumber,
636 edge_port->txCredits);
1da177e4 637
03f0dbf7
AC		 638 /* tell the tty driver that something
639 has changed */
4a90f09b
AC		 640 tty = tty_port_tty_get(
641 &edge_port->port->port);
642 if (tty) {
643 tty_wakeup(tty);
644 tty_kref_put(tty);
645 }
03f0dbf7
AC		 646 /* Since we have more credit, check
647 if more data can be sent */
648 send_more_port_data(edge_serial,
649 edge_port);
1da177e4
LT		 650 }
651 }
652 position += 2;
653 ++portNumber;
654 }
655 }
656
657exit:
03f0dbf7
AC		 658 result = usb_submit_urb(urb, GFP_ATOMIC);
659 if (result)
660 dev_err(&urb->dev->dev,
661 "%s - Error %d submitting control urb\n",
662 __func__, result);
1da177e4
LT		 663}
664
665
666/*****************************************************************************
667 * edge_bulk_in_callback
03f0dbf7 668 * this is the callback function for when we have received data on the
1da177e4
LT		 669 * bulk in endpoint.
670 *****************************************************************************/
03f0dbf7 671static void edge_bulk_in_callback(struct urb *urb)
1da177e4 672{
cdc97792 673 struct edgeport_serial *edge_serial = urb->context;
1da177e4 674 unsigned char *data = urb->transfer_buffer;
2a393f5f 675 int retval;
1da177e4 676 __u16 raw_data_length;
2a393f5f 677 int status = urb->status;
1da177e4 678
441b62c1 679 dbg("%s", __func__);
1da177e4 680
2a393f5f
GKH		 681 if (status) {
682 dbg("%s - nonzero read bulk status received: %d",
441b62c1 683 __func__, status);
cb8eaa8b 684 edge_serial->read_in_progress = false;
1da177e4
LT		 685 return;
686 }
687
688 if (urb->actual_length == 0) {
441b62c1 689 dbg("%s - read bulk callback with no data", __func__);
cb8eaa8b 690 edge_serial->read_in_progress = false;
1da177e4
LT		 691 return;
692 }
693
694 raw_data_length = urb->actual_length;
695
03f0dbf7
AC		 696 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
697 __func__, raw_data_length, data);
1da177e4
LT		 698
699 spin_lock(&edge_serial->es_lock);
700
701 /* decrement our rxBytes available by the number that we just got */
702 edge_serial->rxBytesAvail -= raw_data_length;
703
03f0dbf7
AC		 704 dbg("%s - Received = %d, rxBytesAvail %d", __func__,
705 raw_data_length, edge_serial->rxBytesAvail);
1da177e4 706
03f0dbf7 707 process_rcvd_data(edge_serial, data, urb->actual_length);
1da177e4
LT		 708
709 /* check to see if there's any more data for us to read */
710 if (edge_serial->rxBytesAvail > 0) {
441b62c1 711 dbg("%s - posting a read", __func__);
1da177e4 712 edge_serial->read_urb->dev = edge_serial->serial->dev;
2a393f5f
GKH		 713 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
714 if (retval) {
715 dev_err(&urb->dev->dev,
716 "%s - usb_submit_urb(read bulk) failed, "
441b62c1 717 "retval = %d\n", __func__, retval);
cb8eaa8b 718 edge_serial->read_in_progress = false;
1da177e4
LT		 719 }
720 } else {
cb8eaa8b 721 edge_serial->read_in_progress = false;
1da177e4
LT		 722 }
723
724 spin_unlock(&edge_serial->es_lock);
725}
726
727
728/*****************************************************************************
729 * edge_bulk_out_data_callback
03f0dbf7
AC		 730 * this is the callback function for when we have finished sending
731 * serial data on the bulk out endpoint.
1da177e4 732 *****************************************************************************/
03f0dbf7 733static void edge_bulk_out_data_callback(struct urb *urb)
1da177e4 734{
cdc97792 735 struct edgeport_port *edge_port = urb->context;
1da177e4 736 struct tty_struct *tty;
2a393f5f 737 int status = urb->status;
1da177e4 738
441b62c1 739 dbg("%s", __func__);
1da177e4 740
2a393f5f
GKH		 741 if (status) {
742 dbg("%s - nonzero write bulk status received: %d",
441b62c1 743 __func__, status);
1da177e4
LT		 744 }
745
4a90f09b 746 tty = tty_port_tty_get(&edge_port->port->port);
1da177e4
LT		 747
748 if (tty && edge_port->open) {
03f0dbf7
AC		 749 /* let the tty driver wakeup if it has a special
750 write_wakeup function */
1da177e4
LT		 751 tty_wakeup(tty);
752 }
4a90f09b 753 tty_kref_put(tty);
1da177e4 754
03f0dbf7 755 /* Release the Write URB */
cb8eaa8b 756 edge_port->write_in_progress = false;
1da177e4 757
03f0dbf7
AC		 758 /* Check if more data needs to be sent */
759 send_more_port_data((struct edgeport_serial *)
760 (usb_get_serial_data(edge_port->port->serial)), edge_port);
1da177e4
LT		 761}
762
763
764/*****************************************************************************
765 * BulkOutCmdCallback
03f0dbf7
AC		 766 * this is the callback function for when we have finished sending a
767 * command on the bulk out endpoint.
1da177e4 768 *****************************************************************************/
03f0dbf7 769static void edge_bulk_out_cmd_callback(struct urb *urb)
1da177e4 770{
cdc97792 771 struct edgeport_port *edge_port = urb->context;
1da177e4
LT		 772 struct tty_struct *tty;
773 int status = urb->status;
774
441b62c1 775 dbg("%s", __func__);
1da177e4 776
96c706ed 777 atomic_dec(&CmdUrbs);
03f0dbf7
AC		 778 dbg("%s - FREE URB %p (outstanding %d)", __func__,
779 urb, atomic_read(&CmdUrbs));
1da177e4
LT		 780
781
782 /* clean up the transfer buffer */
1bc3c9e1 783 kfree(urb->transfer_buffer);
1da177e4
LT		 784
785 /* Free the command urb */
03f0dbf7 786 usb_free_urb(urb);
1da177e4
LT		 787
788 if (status) {
03f0dbf7
AC		 789 dbg("%s - nonzero write bulk status received: %d",
790 __func__, status);
1da177e4
LT		 791 return;
792 }
793
794 /* Get pointer to tty */
4a90f09b 795 tty = tty_port_tty_get(&edge_port->port->port);
1da177e4
LT		 796
797 /* tell the tty driver that something has changed */
798 if (tty && edge_port->open)
799 tty_wakeup(tty);
4a90f09b 800 tty_kref_put(tty);
1da177e4
LT		 801
802 /* we have completed the command */
cb8eaa8b 803 edge_port->commandPending = false;
1da177e4
LT		 804 wake_up(&edge_port->wait_command);
805}
806
807
808/*****************************************************************************
809 * Driver tty interface functions
810 *****************************************************************************/
811
812/*****************************************************************************
813 * SerialOpen
814 * this function is called by the tty driver when a port is opened
815 * If successful, we return 0
816 * Otherwise we return a negative error number.
817 *****************************************************************************/
a509a7e4 818static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1da177e4
LT		 819{
820 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
821 struct usb_serial *serial;
822 struct edgeport_serial *edge_serial;
823 int response;
824
441b62c1 825 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 826
827 if (edge_port == NULL)
828 return -ENODEV;
829
03f0dbf7
AC		 830 /* see if we've set up our endpoint info yet (can't set it up
831 in edge_startup as the structures were not set up at that time.) */
1da177e4
LT		 832 serial = port->serial;
833 edge_serial = usb_get_serial_data(serial);
95da310e 834 if (edge_serial == NULL)
1da177e4 835 return -ENODEV;
1da177e4
LT		 836 if (edge_serial->interrupt_in_buffer == NULL) {
837 struct usb_serial_port *port0 = serial->port[0];
03f0dbf7 838
1da177e4 839 /* not set up yet, so do it now */
03f0dbf7
AC		 840 edge_serial->interrupt_in_buffer =
841 port0->interrupt_in_buffer;
842 edge_serial->interrupt_in_endpoint =
843 port0->interrupt_in_endpointAddress;
1da177e4
LT		 844 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
845 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
03f0dbf7
AC		 846 edge_serial->bulk_in_endpoint =
847 port0->bulk_in_endpointAddress;
1da177e4 848 edge_serial->read_urb = port0->read_urb;
03f0dbf7
AC		 849 edge_serial->bulk_out_endpoint =
850 port0->bulk_out_endpointAddress;
851
1da177e4
LT		 852 /* set up our interrupt urb */
853 usb_fill_int_urb(edge_serial->interrupt_read_urb,
03f0dbf7
AC		 854 serial->dev,
855 usb_rcvintpipe(serial->dev,
856 port0->interrupt_in_endpointAddress),
857 port0->interrupt_in_buffer,
858 edge_serial->interrupt_read_urb->transfer_buffer_length,
859 edge_interrupt_callback, edge_serial,
860 edge_serial->interrupt_read_urb->interval);
861
1da177e4
LT		 862 /* set up our bulk in urb */
863 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
03f0dbf7
AC		 864 usb_rcvbulkpipe(serial->dev,
865 port0->bulk_in_endpointAddress),
866 port0->bulk_in_buffer,
867 edge_serial->read_urb->transfer_buffer_length,
868 edge_bulk_in_callback, edge_serial);
cb8eaa8b 869 edge_serial->read_in_progress = false;
1da177e4
LT		 870
871 /* start interrupt read for this edgeport
03f0dbf7
AC		 872 * this interrupt will continue as long
873 * as the edgeport is connected */
874 response = usb_submit_urb(edge_serial->interrupt_read_urb,
875 GFP_KERNEL);
1da177e4 876 if (response) {
03f0dbf7
AC		 877 dev_err(&port->dev,
878 "%s - Error %d submitting control urb\n",
879 __func__, response);
1da177e4
LT		 880 }
881 }
03f0dbf7 882
1da177e4
LT		 883 /* initialize our wait queues */
884 init_waitqueue_head(&edge_port->wait_open);
885 init_waitqueue_head(&edge_port->wait_chase);
886 init_waitqueue_head(&edge_port->delta_msr_wait);
887 init_waitqueue_head(&edge_port->wait_command);
888
889 /* initialize our icount structure */
03f0dbf7 890 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1da177e4
LT		 891
892 /* initialize our port settings */
03f0dbf7
AC		 893 edge_port->txCredits = 0; /* Can't send any data yet */
894 /* Must always set this bit to enable ints! */
895 edge_port->shadowMCR = MCR_MASTER_IE;
cb8eaa8b 896 edge_port->chaseResponsePending = false;
1da177e4
LT		 897
898 /* send a open port command */
cb8eaa8b
RK		 899 edge_port->openPending = true;
900 edge_port->open = false;
03f0dbf7 901 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
1da177e4
LT		 902
903 if (response < 0) {
03f0dbf7
AC		 904 dev_err(&port->dev, "%s - error sending open port command\n",
905 __func__);
cb8eaa8b 906 edge_port->openPending = false;
1da177e4
LT		 907 return -ENODEV;
908 }
909
910 /* now wait for the port to be completely opened */
03f0dbf7
AC		 911 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
912 OPEN_TIMEOUT);
1da177e4 913
cb8eaa8b 914 if (!edge_port->open) {
1da177e4 915 /* open timed out */
441b62c1 916 dbg("%s - open timedout", __func__);
cb8eaa8b 917 edge_port->openPending = false;
1da177e4
LT		 918 return -ENODEV;
919 }
920
921 /* create the txfifo */
922 edge_port->txfifo.head = 0;
923 edge_port->txfifo.tail = 0;
924 edge_port->txfifo.count = 0;
925 edge_port->txfifo.size = edge_port->maxTxCredits;
03f0dbf7 926 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
1da177e4
LT		 927
928 if (!edge_port->txfifo.fifo) {
441b62c1 929 dbg("%s - no memory", __func__);
335f8514 930 edge_close(port);
1da177e4
LT		 931 return -ENOMEM;
932 }
933
934 /* Allocate a URB for the write */
03f0dbf7 935 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
cb8eaa8b 936 edge_port->write_in_progress = false;
1da177e4
LT		 937
938 if (!edge_port->write_urb) {
441b62c1 939 dbg("%s - no memory", __func__);
335f8514 940 edge_close(port);
1da177e4
LT		 941 return -ENOMEM;
942 }
943
03f0dbf7
AC		 944 dbg("%s(%d) - Initialize TX fifo to %d bytes",
945 __func__, port->number, edge_port->maxTxCredits);
1da177e4 946
441b62c1 947 dbg("%s exited", __func__);
1da177e4
LT		 948
949 return 0;
950}
951
952
953/************************************************************************
954 *
955 * block_until_chase_response
956 *
957 * This function will block the close until one of the following:
958 * 1. Response to our Chase comes from Edgeport
dc0d5c1e 959 * 2. A timeout of 10 seconds without activity has expired
1da177e4
LT		 960 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
961 *
962 ************************************************************************/
963static void block_until_chase_response(struct edgeport_port *edge_port)
964{
965 DEFINE_WAIT(wait);
966 __u16 lastCredits;
967 int timeout = 1*HZ;
968 int loop = 10;
969
970 while (1) {
03f0dbf7 971 /* Save Last credits */
1da177e4
LT		 972 lastCredits = edge_port->txCredits;
973
03f0dbf7 974 /* Did we get our Chase response */
cb8eaa8b 975 if (!edge_port->chaseResponsePending) {
441b62c1 976 dbg("%s - Got Chase Response", __func__);
1da177e4 977
03f0dbf7
AC		 978 /* did we get all of our credit back? */
979 if (edge_port->txCredits == edge_port->maxTxCredits) {
441b62c1 980 dbg("%s - Got all credits", __func__);
1da177e4
LT		 981 return;
982 }
983 }
984
03f0dbf7
AC		 985 /* Block the thread for a while */
986 prepare_to_wait(&edge_port->wait_chase, &wait,
987 TASK_UNINTERRUPTIBLE);
1da177e4
LT		 988 schedule_timeout(timeout);
989 finish_wait(&edge_port->wait_chase, &wait);
990
991 if (lastCredits == edge_port->txCredits) {
03f0dbf7 992 /* No activity.. count down. */
1da177e4
LT		 993 loop--;
994 if (loop == 0) {
cb8eaa8b 995 edge_port->chaseResponsePending = false;
441b62c1 996 dbg("%s - Chase TIMEOUT", __func__);
1da177e4
LT		 997 return;
998 }
999 } else {
03f0dbf7
AC		 1000 /* Reset timeout value back to 10 seconds */
1001 dbg("%s - Last %d, Current %d", __func__,
1002 lastCredits, edge_port->txCredits);
1da177e4
LT		 1003 loop = 10;
1004 }
1005 }
1006}
1007
1008
1009/************************************************************************
1010 *
1011 * block_until_tx_empty
1012 *
1013 * This function will block the close until one of the following:
1014 * 1. TX count are 0
1015 * 2. The edgeport has stopped
dc0d5c1e 1016 * 3. A timeout of 3 seconds without activity has expired
1da177e4
LT		 1017 *
1018 ************************************************************************/
03f0dbf7 1019static void block_until_tx_empty(struct edgeport_port *edge_port)
1da177e4
LT		 1020{
1021 DEFINE_WAIT(wait);
1022 struct TxFifo *fifo = &edge_port->txfifo;
1023 __u32 lastCount;
1024 int timeout = HZ/10;
1025 int loop = 30;
1026
1027 while (1) {
03f0dbf7 1028 /* Save Last count */
1da177e4
LT		 1029 lastCount = fifo->count;
1030
03f0dbf7 1031 /* Is the Edgeport Buffer empty? */
1da177e4 1032 if (lastCount == 0) {
441b62c1 1033 dbg("%s - TX Buffer Empty", __func__);
1da177e4
LT		 1034 return;
1035 }
1036
03f0dbf7
AC		 1037 /* Block the thread for a while */
1038 prepare_to_wait(&edge_port->wait_chase, &wait,
1039 TASK_UNINTERRUPTIBLE);
1da177e4
LT		 1040 schedule_timeout(timeout);
1041 finish_wait(&edge_port->wait_chase, &wait);
1042
441b62c1 1043 dbg("%s wait", __func__);
1da177e4
LT		 1044
1045 if (lastCount == fifo->count) {
03f0dbf7 1046 /* No activity.. count down. */
1da177e4
LT		 1047 loop--;
1048 if (loop == 0) {
441b62c1 1049 dbg("%s - TIMEOUT", __func__);
1da177e4
LT		 1050 return;
1051 }
1052 } else {
03f0dbf7 1053 /* Reset timeout value back to seconds */
1da177e4
LT		 1054 loop = 30;
1055 }
1056 }
1057}
1058
1059
1060/*****************************************************************************
1061 * edge_close
1062 * this function is called by the tty driver when a port is closed
1063 *****************************************************************************/
335f8514 1064static void edge_close(struct usb_serial_port *port)
1da177e4
LT		 1065{
1066 struct edgeport_serial *edge_serial;
1067 struct edgeport_port *edge_port;
1068 int status;
1069
441b62c1 1070 dbg("%s - port %d", __func__, port->number);
03f0dbf7 1071
1da177e4
LT		 1072 edge_serial = usb_get_serial_data(port->serial);
1073 edge_port = usb_get_serial_port_data(port);
03f0dbf7 1074 if (edge_serial == NULL || edge_port == NULL)
1da177e4 1075 return;
03f0dbf7
AC		 1076
1077 /* block until tx is empty */
1da177e4
LT		 1078 block_until_tx_empty(edge_port);
1079
cb8eaa8b 1080 edge_port->closePending = true;
1da177e4 1081
6e8cf775
GKH		 1082 if ((!edge_serial->is_epic) ||
1083 ((edge_serial->is_epic) &&
1084 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1085 /* flush and chase */
cb8eaa8b 1086 edge_port->chaseResponsePending = true;
6e8cf775 1087
441b62c1 1088 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__);
03f0dbf7
AC		 1089 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1090 if (status == 0)
1091 /* block until chase finished */
6e8cf775 1092 block_until_chase_response(edge_port);
03f0dbf7 1093 else
cb8eaa8b 1094 edge_port->chaseResponsePending = false;
1da177e4
LT		 1095 }
1096
6e8cf775
GKH		 1097 if ((!edge_serial->is_epic) ||
1098 ((edge_serial->is_epic) &&
1099 (edge_serial->epic_descriptor.Supports.IOSPClose))) {
1100 /* close the port */
441b62c1 1101 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __func__);
03f0dbf7 1102 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
6e8cf775 1103 }
1da177e4 1104
03f0dbf7 1105 /* port->close = true; */
cb8eaa8b
RK		 1106 edge_port->closePending = false;
1107 edge_port->open = false;
1108 edge_port->openPending = false;
1da177e4 1109
9a25f44f 1110 usb_kill_urb(edge_port->write_urb);
1da177e4
LT		 1111
1112 if (edge_port->write_urb) {
03f0dbf7
AC		 1113 /* if this urb had a transfer buffer already
1114 (old transfer) free it */
1bc3c9e1
JJ		 1115 kfree(edge_port->write_urb->transfer_buffer);
1116 usb_free_urb(edge_port->write_urb);
1da177e4
LT		 1117 edge_port->write_urb = NULL;
1118 }
1bc3c9e1
JJ		 1119 kfree(edge_port->txfifo.fifo);
1120 edge_port->txfifo.fifo = NULL;
1da177e4 1121
441b62c1 1122 dbg("%s exited", __func__);
03f0dbf7 1123}
1da177e4
LT		 1124
1125/*****************************************************************************
1126 * SerialWrite
03f0dbf7
AC		 1127 * this function is called by the tty driver when data should be written
1128 * to the port.
1129 * If successful, we return the number of bytes written, otherwise we
1130 * return a negative error number.
1da177e4 1131 *****************************************************************************/
95da310e
AC		 1132static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1133 const unsigned char *data, int count)
1da177e4
LT		 1134{
1135 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1136 struct TxFifo *fifo;
1137 int copySize;
1138 int bytesleft;
1139 int firsthalf;
1140 int secondhalf;
1141 unsigned long flags;
1142
441b62c1 1143 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 1144
1145 if (edge_port == NULL)
1146 return -ENODEV;
1147
03f0dbf7 1148 /* get a pointer to the Tx fifo */
1da177e4
LT		 1149 fifo = &edge_port->txfifo;
1150
1151 spin_lock_irqsave(&edge_port->ep_lock, flags);
1152
03f0dbf7
AC		 1153 /* calculate number of bytes to put in fifo */
1154 copySize = min((unsigned int)count,
1155 (edge_port->txCredits - fifo->count));
1da177e4 1156
03f0dbf7
AC		 1157 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes",
1158 __func__, port->number, count,
1159 edge_port->txCredits - fifo->count, copySize);
1da177e4 1160
03f0dbf7
AC		 1161 /* catch writes of 0 bytes which the tty driver likes to give us,
1162 and when txCredits is empty */
1da177e4 1163 if (copySize == 0) {
441b62c1 1164 dbg("%s - copySize = Zero", __func__);
1da177e4
LT		 1165 goto finish_write;
1166 }
1167
03f0dbf7
AC		 1168 /* queue the data
1169 * since we can never overflow the buffer we do not have to check for a
1170 * full condition
1171 *
1172 * the copy is done is two parts -- first fill to the end of the buffer
1173 * then copy the reset from the start of the buffer
1174 */
1da177e4 1175 bytesleft = fifo->size - fifo->head;
03f0dbf7
AC		 1176 firsthalf = min(bytesleft, copySize);
1177 dbg("%s - copy %d bytes of %d into fifo ", __func__,
1178 firsthalf, bytesleft);
1da177e4
LT		 1179
1180 /* now copy our data */
1181 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
03f0dbf7
AC		 1182 usb_serial_debug_data(debug, &port->dev, __func__,
1183 firsthalf, &fifo->fifo[fifo->head]);
1da177e4 1184
03f0dbf7 1185 /* update the index and size */
1da177e4
LT		 1186 fifo->head += firsthalf;
1187 fifo->count += firsthalf;
1188
03f0dbf7
AC		 1189 /* wrap the index */
1190 if (fifo->head == fifo->size)
1da177e4 1191 fifo->head = 0;
1da177e4
LT		 1192
1193 secondhalf = copySize-firsthalf;
1194
1195 if (secondhalf) {
441b62c1 1196 dbg("%s - copy rest of data %d", __func__, secondhalf);
1da177e4 1197 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
03f0dbf7
AC		 1198 usb_serial_debug_data(debug, &port->dev, __func__,
1199 secondhalf, &fifo->fifo[fifo->head]);
1200 /* update the index and size */
1da177e4
LT		 1201 fifo->count += secondhalf;
1202 fifo->head += secondhalf;
03f0dbf7
AC		 1203 /* No need to check for wrap since we can not get to end of
1204 * the fifo in this part
1205 */
1da177e4
LT		 1206 }
1207
1208finish_write:
1209 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1210
03f0dbf7
AC		 1211 send_more_port_data((struct edgeport_serial *)
1212 usb_get_serial_data(port->serial), edge_port);
1da177e4 1213
03f0dbf7
AC		 1214 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __func__,
1215 copySize, edge_port->txCredits, fifo->count);
1da177e4 1216
03f0dbf7 1217 return copySize;
1da177e4
LT		 1218}
1219
1220
1221/************************************************************************
1222 *
1223 * send_more_port_data()
1224 *
1225 * This routine attempts to write additional UART transmit data
1226 * to a port over the USB bulk pipe. It is called (1) when new
1227 * data has been written to a port's TxBuffer from higher layers
1228 * (2) when the peripheral sends us additional TxCredits indicating
1229 * that it can accept more Tx data for a given port; and (3) when
1230 * a bulk write completes successfully and we want to see if we
1231 * can transmit more.
1232 *
1233 ************************************************************************/
03f0dbf7
AC		 1234static void send_more_port_data(struct edgeport_serial *edge_serial,
1235 struct edgeport_port *edge_port)
1da177e4
LT		 1236{
1237 struct TxFifo *fifo = &edge_port->txfifo;
1238 struct urb *urb;
1239 unsigned char *buffer;
1240 int status;
1241 int count;
1242 int bytesleft;
1243 int firsthalf;
1244 int secondhalf;
1245 unsigned long flags;
1246
441b62c1 1247 dbg("%s(%d)", __func__, edge_port->port->number);
1da177e4
LT		 1248
1249 spin_lock_irqsave(&edge_port->ep_lock, flags);
1250
1251 if (edge_port->write_in_progress ||
1252 !edge_port->open ||
1253 (fifo->count == 0)) {
03f0dbf7
AC		 1254 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d",
1255 __func__, edge_port->port->number,
1256 fifo->count, edge_port->write_in_progress);
1da177e4
LT		 1257 goto exit_send;
1258 }
1259
03f0dbf7
AC		 1260 /* since the amount of data in the fifo will always fit into the
1261 * edgeport buffer we do not need to check the write length
1262 *
1263 * Do we have enough credits for this port to make it worthwhile
1264 * to bother queueing a write. If it's too small, say a few bytes,
1265 * it's better to wait for more credits so we can do a larger write.
1266 */
1267 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1268 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d",
1269 __func__, edge_port->port->number, fifo->count,
1270 edge_port->txCredits);
1da177e4
LT		 1271 goto exit_send;
1272 }
1273
03f0dbf7 1274 /* lock this write */
cb8eaa8b 1275 edge_port->write_in_progress = true;
1da177e4 1276
03f0dbf7 1277 /* get a pointer to the write_urb */
1da177e4
LT		 1278 urb = edge_port->write_urb;
1279
1bc3c9e1
JJ		 1280 /* make sure transfer buffer is freed */
1281 kfree(urb->transfer_buffer);
1282 urb->transfer_buffer = NULL;
1da177e4 1283
03f0dbf7
AC		 1284 /* build the data header for the buffer and port that we are about
1285 to send out */
1da177e4 1286 count = fifo->count;
03f0dbf7 1287 buffer = kmalloc(count+2, GFP_ATOMIC);
1da177e4 1288 if (buffer == NULL) {
03f0dbf7
AC		 1289 dev_err(&edge_port->port->dev,
1290 "%s - no more kernel memory...\n", __func__);
cb8eaa8b 1291 edge_port->write_in_progress = false;
1da177e4
LT		 1292 goto exit_send;
1293 }
03f0dbf7
AC		 1294 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->number
1295 - edge_port->port->serial->minor, count);
1296 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->number
1297 - edge_port->port->serial->minor, count);
1da177e4
LT		 1298
1299 /* now copy our data */
1300 bytesleft = fifo->size - fifo->tail;
03f0dbf7 1301 firsthalf = min(bytesleft, count);
1da177e4
LT		 1302 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1303 fifo->tail += firsthalf;
1304 fifo->count -= firsthalf;
03f0dbf7 1305 if (fifo->tail == fifo->size)
1da177e4 1306 fifo->tail = 0;
1da177e4
LT		 1307
1308 secondhalf = count-firsthalf;
1309 if (secondhalf) {
03f0dbf7
AC		 1310 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1311 secondhalf);
1da177e4
LT		 1312 fifo->tail += secondhalf;
1313 fifo->count -= secondhalf;
1314 }
1315
1316 if (count)
03f0dbf7
AC		 1317 usb_serial_debug_data(debug, &edge_port->port->dev,
1318 __func__, count, &buffer[2]);
1da177e4
LT		 1319
1320 /* fill up the urb with all of our data and submit it */
03f0dbf7
AC		 1321 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1322 usb_sndbulkpipe(edge_serial->serial->dev,
1323 edge_serial->bulk_out_endpoint),
1324 buffer, count+2,
1325 edge_bulk_out_data_callback, edge_port);
1da177e4
LT		 1326
1327 /* decrement the number of credits we have by the number we just sent */
1328 edge_port->txCredits -= count;
1329 edge_port->icount.tx += count;
1330
1331 urb->dev = edge_serial->serial->dev;
1332 status = usb_submit_urb(urb, GFP_ATOMIC);
1333 if (status) {
1334 /* something went wrong */
03f0dbf7
AC		 1335 dev_err(&edge_port->port->dev,
1336 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1337 __func__, status);
cb8eaa8b 1338 edge_port->write_in_progress = false;
1da177e4
LT		 1339
1340 /* revert the credits as something bad happened. */
1341 edge_port->txCredits += count;
1342 edge_port->icount.tx -= count;
1343 }
03f0dbf7
AC		 1344 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d",
1345 __func__, count, edge_port->txCredits, fifo->count);
1da177e4
LT		 1346
1347exit_send:
1348 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1349}
1350
1351
1352/*****************************************************************************
1353 * edge_write_room
03f0dbf7
AC		 1354 * this function is called by the tty driver when it wants to know how
1355 * many bytes of data we can accept for a specific port. If successful,
1356 * we return the amount of room that we have for this port (the txCredits)
1357 * otherwise we return a negative error number.
1da177e4 1358 *****************************************************************************/
95da310e 1359static int edge_write_room(struct tty_struct *tty)
1da177e4 1360{
95da310e 1361 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1362 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1363 int room;
1364 unsigned long flags;
1365
441b62c1 1366 dbg("%s", __func__);
1da177e4
LT		 1367
1368 if (edge_port == NULL)
d76f2f44 1369 return 0;
cb8eaa8b 1370 if (edge_port->closePending)
d76f2f44 1371 return 0;
1da177e4 1372
441b62c1 1373 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 1374
1375 if (!edge_port->open) {
441b62c1 1376 dbg("%s - port not opened", __func__);
d76f2f44 1377 return 0;
1da177e4
LT		 1378 }
1379
03f0dbf7 1380 /* total of both buffers is still txCredit */
1da177e4
LT		 1381 spin_lock_irqsave(&edge_port->ep_lock, flags);
1382 room = edge_port->txCredits - edge_port->txfifo.count;
1383 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1384
441b62c1 1385 dbg("%s - returns %d", __func__, room);
1da177e4
LT		 1386 return room;
1387}
1388
1389
1390/*****************************************************************************
1391 * edge_chars_in_buffer
03f0dbf7
AC		 1392 * this function is called by the tty driver when it wants to know how
1393 * many bytes of data we currently have outstanding in the port (data that
1394 * has been written, but hasn't made it out the port yet)
1395 * If successful, we return the number of bytes left to be written in the
1396 * system,
1da177e4
LT		 1397 * Otherwise we return a negative error number.
1398 *****************************************************************************/
95da310e 1399static int edge_chars_in_buffer(struct tty_struct *tty)
1da177e4 1400{
95da310e 1401 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1402 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1403 int num_chars;
1404 unsigned long flags;
1405
441b62c1 1406 dbg("%s", __func__);
1da177e4
LT		 1407
1408 if (edge_port == NULL)
d76f2f44 1409 return 0;
cb8eaa8b 1410 if (edge_port->closePending)
d76f2f44 1411 return 0;
1da177e4
LT		 1412
1413 if (!edge_port->open) {
441b62c1 1414 dbg("%s - port not opened", __func__);
d76f2f44 1415 return 0;
1da177e4
LT		 1416 }
1417
1418 spin_lock_irqsave(&edge_port->ep_lock, flags);
03f0dbf7
AC		 1419 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1420 edge_port->txfifo.count;
1da177e4
LT		 1421 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1422 if (num_chars) {
03f0dbf7
AC		 1423 dbg("%s(port %d) - returns %d", __func__,
1424 port->number, num_chars);
1da177e4
LT		 1425 }
1426
1427 return num_chars;
1428}
1429
1430
1431/*****************************************************************************
1432 * SerialThrottle
1433 * this function is called by the tty driver when it wants to stop the data
1434 * being read from the port.
1435 *****************************************************************************/
95da310e 1436static void edge_throttle(struct tty_struct *tty)
1da177e4 1437{
95da310e 1438 struct usb_serial_port *port = tty->driver_data;
1da177e4 1439 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1440 int status;
1441
441b62c1 1442 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 1443
1444 if (edge_port == NULL)
1445 return;
1446
1447 if (!edge_port->open) {
441b62c1 1448 dbg("%s - port not opened", __func__);
1da177e4
LT		 1449 return;
1450 }
1451
1da177e4
LT		 1452 /* if we are implementing XON/XOFF, send the stop character */
1453 if (I_IXOFF(tty)) {
1454 unsigned char stop_char = STOP_CHAR(tty);
03f0dbf7
AC		 1455 status = edge_write(tty, port, &stop_char, 1);
1456 if (status <= 0)
1da177e4 1457 return;
1da177e4
LT		 1458 }
1459
1460 /* if we are implementing RTS/CTS, toggle that line */
1461 if (tty->termios->c_cflag & CRTSCTS) {
1462 edge_port->shadowMCR &= ~MCR_RTS;
03f0dbf7
AC		 1463 status = send_cmd_write_uart_register(edge_port, MCR,
1464 edge_port->shadowMCR);
1465 if (status != 0)
1da177e4 1466 return;
1da177e4
LT		 1467 }
1468
1469 return;
1470}
1471
1472
1473/*****************************************************************************
1474 * edge_unthrottle
03f0dbf7
AC		 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)
1da177e4 1477 *****************************************************************************/
95da310e 1478static void edge_unthrottle(struct tty_struct *tty)
1da177e4 1479{
95da310e 1480 struct usb_serial_port *port = tty->driver_data;
1da177e4 1481 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1482 int status;
1483
441b62c1 1484 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 1485
1486 if (edge_port == NULL)
1487 return;
1488
1489 if (!edge_port->open) {
441b62c1 1490 dbg("%s - port not opened", __func__);
1da177e4
LT		 1491 return;
1492 }
1493
1da177e4
LT		 1494 /* if we are implementing XON/XOFF, send the start character */
1495 if (I_IXOFF(tty)) {
1496 unsigned char start_char = START_CHAR(tty);
95da310e
AC		 1497 status = edge_write(tty, port, &start_char, 1);
1498 if (status <= 0)
1da177e4 1499 return;
1da177e4 1500 }
1da177e4
LT		 1501 /* if we are implementing RTS/CTS, toggle that line */
1502 if (tty->termios->c_cflag & CRTSCTS) {
1503 edge_port->shadowMCR |= MCR_RTS;
03f0dbf7
AC		 1504 send_cmd_write_uart_register(edge_port, MCR,
1505 edge_port->shadowMCR);
1da177e4 1506 }
1da177e4
LT		 1507}
1508
1509
1510/*****************************************************************************
1511 * SerialSetTermios
03f0dbf7
AC		 1512 * this function is called by the tty driver when it wants to change
1513 * the termios structure
1da177e4 1514 *****************************************************************************/
95da310e
AC		 1515static void edge_set_termios(struct tty_struct *tty,
1516 struct usb_serial_port *port, struct ktermios *old_termios)
1da177e4
LT		 1517{
1518 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1519 unsigned int cflag;
1520
1da177e4 1521 cflag = tty->termios->c_cflag;
441b62c1 1522 dbg("%s - clfag %08x iflag %08x", __func__,
1da177e4 1523 tty->termios->c_cflag, tty->termios->c_iflag);
441b62c1 1524 dbg("%s - old clfag %08x old iflag %08x", __func__,
6ce073bd 1525 old_termios->c_cflag, old_termios->c_iflag);
1da177e4 1526
441b62c1 1527 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 1528
1529 if (edge_port == NULL)
1530 return;
1531
1532 if (!edge_port->open) {
441b62c1 1533 dbg("%s - port not opened", __func__);
1da177e4
LT		 1534 return;
1535 }
1536
1537 /* change the port settings to the new ones specified */
95da310e 1538 change_port_settings(tty, edge_port, old_termios);
1da177e4
LT		 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
03f0dbf7 1550 * allows an RS485 driver to be written in user space.
1da177e4 1551 *****************************************************************************/
03f0dbf7
AC		 1552static int get_lsr_info(struct edgeport_port *edge_port,
1553 unsigned int __user *value)
1da177e4
LT		 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) {
441b62c1 1561 dbg("%s -- Empty", __func__);
1da177e4
LT		 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
03f0dbf7
AC		 1571static int edge_tiocmset(struct tty_struct *tty, struct file *file,
1572 unsigned int set, unsigned int clear)
1da177e4 1573{
95da310e 1574 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1575 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1576 unsigned int mcr;
1577
441b62c1 1578 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 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
95da310e 1602static int edge_tiocmget(struct tty_struct *tty, struct file *file)
1da177e4 1603{
95da310e 1604 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 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
441b62c1 1610 dbg("%s - port %d", __func__, port->number);
1da177e4
LT		 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
441b62c1 1622 dbg("%s -- %x", __func__, result);
1da177e4
LT		 1623
1624 return result;
1625}
1626
03f0dbf7
AC		 1627static int get_serial_info(struct edgeport_port *edge_port,
1628 struct serial_struct __user *retinfo)
1da177e4
LT		 1629{
1630 struct serial_struct tmp;
1631
1632 if (!retinfo)
1633 return -EFAULT;
1634
1635 memset(&tmp, 0, sizeof(tmp));
1636
1637 tmp.type = PORT_16550A;
1638 tmp.line = edge_port->port->serial->minor;
1639 tmp.port = edge_port->port->number;
1640 tmp.irq = 0;
1641 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1642 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1643 tmp.baud_base = 9600;
1644 tmp.close_delay = 5*HZ;
1645 tmp.closing_wait = 30*HZ;
1da177e4
LT		 1646
1647 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1648 return -EFAULT;
1649 return 0;
1650}
1651
1652
1653
1654/*****************************************************************************
1655 * SerialIoctl
1656 * this function handles any ioctl calls to the driver
1657 *****************************************************************************/
95da310e
AC		 1658static int edge_ioctl(struct tty_struct *tty, struct file *file,
1659 unsigned int cmd, unsigned long arg)
1da177e4 1660{
95da310e 1661 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1662 DEFINE_WAIT(wait);
1663 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1664 struct async_icount cnow;
1665 struct async_icount cprev;
1666 struct serial_icounter_struct icount;
1667
441b62c1 1668 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
1da177e4
LT		 1669
1670 switch (cmd) {
03f0dbf7
AC		 1671 case TIOCSERGETLSR:
1672 dbg("%s (%d) TIOCSERGETLSR", __func__, port->number);
1673 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1674
1675 case TIOCGSERIAL:
1676 dbg("%s (%d) TIOCGSERIAL", __func__, port->number);
1677 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1678
1679 case TIOCMIWAIT:
1680 dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
1681 cprev = edge_port->icount;
1682 while (1) {
1683 prepare_to_wait(&edge_port->delta_msr_wait,
1684 &wait, TASK_INTERRUPTIBLE);
1685 schedule();
1686 finish_wait(&edge_port->delta_msr_wait, &wait);
1687 /* see if a signal did it */
1688 if (signal_pending(current))
1689 return -ERESTARTSYS;
1690 cnow = edge_port->icount;
1691 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1692 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1693 return -EIO; /* no change => error */
1694 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1695 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1696 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
1697 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
1698 return 0;
1da177e4 1699 }
03f0dbf7
AC		 1700 cprev = cnow;
1701 }
1702 /* NOTREACHED */
1703 break;
1da177e4 1704
03f0dbf7
AC		 1705 case TIOCGICOUNT:
1706 cnow = edge_port->icount;
1707 memset(&icount, 0, sizeof(icount));
1708 icount.cts = cnow.cts;
1709 icount.dsr = cnow.dsr;
1710 icount.rng = cnow.rng;
1711 icount.dcd = cnow.dcd;
1712 icount.rx = cnow.rx;
1713 icount.tx = cnow.tx;
1714 icount.frame = cnow.frame;
1715 icount.overrun = cnow.overrun;
1716 icount.parity = cnow.parity;
1717 icount.brk = cnow.brk;
1718 icount.buf_overrun = cnow.buf_overrun;
1719
1720 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d",
1721 __func__, port->number, icount.rx, icount.tx);
1722 if (copy_to_user((void __user *)arg, &icount, sizeof(icount)))
1723 return -EFAULT;
1724 return 0;
1da177e4 1725 }
1da177e4
LT		 1726 return -ENOIOCTLCMD;
1727}
1728
1729
1730/*****************************************************************************
1731 * SerialBreak
1732 * this function sends a break to the port
1733 *****************************************************************************/
03f0dbf7 1734static void edge_break(struct tty_struct *tty, int break_state)
1da177e4 1735{
95da310e 1736 struct usb_serial_port *port = tty->driver_data;
1da177e4 1737 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
6e8cf775 1738 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1da177e4
LT		 1739 int status;
1740
6e8cf775
GKH		 1741 if ((!edge_serial->is_epic) ||
1742 ((edge_serial->is_epic) &&
1743 (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1744 /* flush and chase */
cb8eaa8b 1745 edge_port->chaseResponsePending = true;
6e8cf775 1746
441b62c1 1747 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __func__);
03f0dbf7 1748 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
6e8cf775 1749 if (status == 0) {
03f0dbf7 1750 /* block until chase finished */
6e8cf775
GKH		 1751 block_until_chase_response(edge_port);
1752 } else {
cb8eaa8b 1753 edge_port->chaseResponsePending = false;
6e8cf775 1754 }
1da177e4
LT		 1755 }
1756
6e8cf775
GKH		 1757 if ((!edge_serial->is_epic) ||
1758 ((edge_serial->is_epic) &&
1759 (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) {
1760 if (break_state == -1) {
441b62c1 1761 dbg("%s - Sending IOSP_CMD_SET_BREAK", __func__);
03f0dbf7
AC		 1762 status = send_iosp_ext_cmd(edge_port,
1763 IOSP_CMD_SET_BREAK, 0);
6e8cf775 1764 } else {
441b62c1 1765 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __func__);
03f0dbf7
AC		 1766 status = send_iosp_ext_cmd(edge_port,
1767 IOSP_CMD_CLEAR_BREAK, 0);
6e8cf775 1768 }
03f0dbf7
AC		 1769 if (status)
1770 dbg("%s - error sending break set/clear command.",
1771 __func__);
1da177e4
LT		 1772 }
1773
1774 return;
1775}
1776
1777
1778/*****************************************************************************
1779 * process_rcvd_data
1780 * this function handles the data received on the bulk in pipe.
1781 *****************************************************************************/
03f0dbf7
AC		 1782static void process_rcvd_data(struct edgeport_serial *edge_serial,
1783 unsigned char *buffer, __u16 bufferLength)
1da177e4
LT		 1784{
1785 struct usb_serial_port *port;
1786 struct edgeport_port *edge_port;
1787 struct tty_struct *tty;
1788 __u16 lastBufferLength;
1789 __u16 rxLen;
1790
441b62c1 1791 dbg("%s", __func__);
1da177e4
LT		 1792
1793 lastBufferLength = bufferLength + 1;
1794
1795 while (bufferLength > 0) {
1796 /* failsafe incase we get a message that we don't understand */
1797 if (lastBufferLength == bufferLength) {
441b62c1 1798 dbg("%s - stuck in loop, exiting it.", __func__);
1da177e4
LT		 1799 break;
1800 }
1801 lastBufferLength = bufferLength;
1802
1803 switch (edge_serial->rxState) {
03f0dbf7
AC		 1804 case EXPECT_HDR1:
1805 edge_serial->rxHeader1 = *buffer;
1806 ++buffer;
1807 --bufferLength;
1da177e4 1808
03f0dbf7
AC		 1809 if (bufferLength == 0) {
1810 edge_serial->rxState = EXPECT_HDR2;
1811 break;
1812 }
1813 /* otherwise, drop on through */
1814 case EXPECT_HDR2:
1815 edge_serial->rxHeader2 = *buffer;
1816 ++buffer;
1817 --bufferLength;
1818
1819 dbg("%s - Hdr1=%02X Hdr2=%02X", __func__,
1820 edge_serial->rxHeader1, edge_serial->rxHeader2);
1821 /* Process depending on whether this header is
1822 * data or status */
1823
1824 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1825 /* Decode this status header and go to
1826 * EXPECT_HDR1 (if we can process the status
1827 * with only 2 bytes), or go to EXPECT_HDR3 to
1828 * get the third byte. */
1829 edge_serial->rxPort =
1830 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1831 edge_serial->rxStatusCode =
1832 IOSP_GET_STATUS_CODE(
1833 edge_serial->rxHeader1);
1834
1835 if (!IOSP_STATUS_IS_2BYTE(
1836 edge_serial->rxStatusCode)) {
1837 /* This status needs additional bytes.
1838 * Save what we have and then wait for
1839 * more data.
1840 */
1841 edge_serial->rxStatusParam
1842 = edge_serial->rxHeader2;
1843 edge_serial->rxState = EXPECT_HDR3;
1da177e4
LT		 1844 break;
1845 }
03f0dbf7
AC		 1846 /* We have all the header bytes, process the
1847 status now */
1848 process_rcvd_status(edge_serial,
1849 edge_serial->rxHeader2, 0);
1850 edge_serial->rxState = EXPECT_HDR1;
1851 break;
1852 } else {
1853 edge_serial->rxPort =
1854 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1855 edge_serial->rxBytesRemaining =
1856 IOSP_GET_HDR_DATA_LEN(
1857 edge_serial->rxHeader1,
1858 edge_serial->rxHeader2);
1859 dbg("%s - Data for Port %u Len %u",
1860 __func__,
1861 edge_serial->rxPort,
1862 edge_serial->rxBytesRemaining);
1863
1864 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1865 * ASSERT(DevExt->RxBytesRemaining <
1866 * IOSP_MAX_DATA_LENGTH);
1867 */
1da177e4 1868
03f0dbf7
AC		 1869 if (bufferLength == 0) {
1870 edge_serial->rxState = EXPECT_DATA;
1da177e4 1871 break;
1da177e4 1872 }
03f0dbf7
AC		 1873 /* Else, drop through */
1874 }
1875 case EXPECT_DATA: /* Expect data */
1876 if (bufferLength < edge_serial->rxBytesRemaining) {
1877 rxLen = bufferLength;
1878 /* Expect data to start next buffer */
1879 edge_serial->rxState = EXPECT_DATA;
1880 } else {
1881 /* BufLen >= RxBytesRemaining */
1882 rxLen = edge_serial->rxBytesRemaining;
1883 /* Start another header next time */
1884 edge_serial->rxState = EXPECT_HDR1;
1885 }
1da177e4 1886
03f0dbf7
AC		 1887 bufferLength -= rxLen;
1888 edge_serial->rxBytesRemaining -= rxLen;
1da177e4 1889
03f0dbf7
AC		 1890 /* spit this data back into the tty driver if this
1891 port is open */
1892 if (rxLen) {
1893 port = edge_serial->serial->port[
1894 edge_serial->rxPort];
1895 edge_port = usb_get_serial_port_data(port);
1896 if (edge_port->open) {
4a90f09b
AC		 1897 tty = tty_port_tty_get(
1898 &edge_port->port->port);
03f0dbf7
AC		 1899 if (tty) {
1900 dbg("%s - Sending %d bytes to TTY for port %d",
1901 __func__, rxLen, edge_serial->rxPort);
1902 edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
4a90f09b 1903 tty_kref_put(tty);
1da177e4 1904 }
03f0dbf7 1905 edge_port->icount.rx += rxLen;
1da177e4 1906 }
03f0dbf7
AC		 1907 buffer += rxLen;
1908 }
1909 break;
1da177e4 1910
03f0dbf7
AC		 1911 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1912 edge_serial->rxHeader3 = *buffer;
1913 ++buffer;
1914 --bufferLength;
1915
1916 /* We have all the header bytes, process the
1917 status now */
1918 process_rcvd_status(edge_serial,
1919 edge_serial->rxStatusParam,
1920 edge_serial->rxHeader3);
1921 edge_serial->rxState = EXPECT_HDR1;
1922 break;
1da177e4
LT		 1923 }
1924 }
1925}
1926
1927
1928/*****************************************************************************
1929 * process_rcvd_status
03f0dbf7
AC		 1930 * this function handles the any status messages received on the
1931 * bulk in pipe.
1da177e4 1932 *****************************************************************************/
03f0dbf7
AC		 1933static void process_rcvd_status(struct edgeport_serial *edge_serial,
1934 __u8 byte2, __u8 byte3)
1da177e4
LT		 1935{
1936 struct usb_serial_port *port;
1937 struct edgeport_port *edge_port;
4a90f09b 1938 struct tty_struct *tty;
1da177e4
LT		 1939 __u8 code = edge_serial->rxStatusCode;
1940
1941 /* switch the port pointer to the one being currently talked about */
1942 port = edge_serial->serial->port[edge_serial->rxPort];
1943 edge_port = usb_get_serial_port_data(port);
1944 if (edge_port == NULL) {
03f0dbf7
AC		 1945 dev_err(&edge_serial->serial->dev->dev,
1946 "%s - edge_port == NULL for port %d\n",
1947 __func__, edge_serial->rxPort);
1da177e4
LT		 1948 return;
1949 }
1950
441b62c1 1951 dbg("%s - port %d", __func__, edge_serial->rxPort);
1da177e4
LT		 1952
1953 if (code == IOSP_EXT_STATUS) {
1954 switch (byte2) {
03f0dbf7
AC		 1955 case IOSP_EXT_STATUS_CHASE_RSP:
1956 /* we want to do EXT status regardless of port
1957 * open/closed */
1958 dbg("%s - Port %u EXT CHASE_RSP Data = %02x",
1959 __func__, edge_serial->rxPort, byte3);
1960 /* Currently, the only EXT_STATUS is Chase, so process
1961 * here instead of one more call to one more subroutine
1962 * If/when more EXT_STATUS, there'll be more work to do
1963 * Also, we currently clear flag and close the port
1964 * regardless of content of above's Byte3.
1965 * We could choose to do something else when Byte3 says
1966 * Timeout on Chase from Edgeport, like wait longer in
1967 * block_until_chase_response, but for now we don't.
1968 */
1969 edge_port->chaseResponsePending = false;
1970 wake_up(&edge_port->wait_chase);
1971 return;
1da177e4 1972
03f0dbf7
AC		 1973 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1974 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __func__, edge_serial->rxPort, byte3);
1975 /* Port->RxCheckRsp = true; */
1976 return;
1da177e4
LT		 1977 }
1978 }
1979
1980 if (code == IOSP_STATUS_OPEN_RSP) {
1981 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1982 edge_port->maxTxCredits = edge_port->txCredits;
441b62c1 1983 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
03f0dbf7 1984 handle_new_msr(edge_port, byte2);
1da177e4 1985
03f0dbf7
AC		 1986 /* send the current line settings to the port so we are
1987 in sync with any further termios calls */
4a90f09b
AC		 1988 tty = tty_port_tty_get(&edge_port->port->port);
1989 if (tty) {
1990 change_port_settings(tty,
1991 edge_port, tty->termios);
1992 tty_kref_put(tty);
1993 }
1da177e4
LT		 1994
1995 /* we have completed the open */
cb8eaa8b
RK		 1996 edge_port->openPending = false;
1997 edge_port->open = true;
1da177e4
LT		 1998 wake_up(&edge_port->wait_open);
1999 return;
2000 }
2001
03f0dbf7
AC		 2002 /* If port is closed, silently discard all rcvd status. We can
2003 * have cases where buffered status is received AFTER the close
2004 * port command is sent to the Edgeport.
2005 */
2006 if (!edge_port->open || edge_port->closePending)
1da177e4 2007 return;
1da177e4
LT		 2008
2009 switch (code) {
03f0dbf7
AC		 2010 /* Not currently sent by Edgeport */
2011 case IOSP_STATUS_LSR:
2012 dbg("%s - Port %u LSR Status = %02x",
2013 __func__, edge_serial->rxPort, byte2);
2014 handle_new_lsr(edge_port, false, byte2, 0);
2015 break;
1da177e4 2016
03f0dbf7
AC		 2017 case IOSP_STATUS_LSR_DATA:
2018 dbg("%s - Port %u LSR Status = %02x, Data = %02x",
2019 __func__, edge_serial->rxPort, byte2, byte3);
2020 /* byte2 is LSR Register */
2021 /* byte3 is broken data byte */
2022 handle_new_lsr(edge_port, true, byte2, byte3);
2023 break;
2024 /*
2025 * case IOSP_EXT_4_STATUS:
2026 * dbg("%s - Port %u LSR Status = %02x Data = %02x",
2027 * __func__, edge_serial->rxPort, byte2, byte3);
2028 * break;
2029 */
2030 case IOSP_STATUS_MSR:
2031 dbg("%s - Port %u MSR Status = %02x",
2032 __func__, edge_serial->rxPort, byte2);
2033 /*
2034 * Process this new modem status and generate appropriate
2035 * events, etc, based on the new status. This routine
2036 * also saves the MSR in Port->ShadowMsr.
2037 */
2038 handle_new_msr(edge_port, byte2);
2039 break;
1da177e4 2040
03f0dbf7
AC		 2041 default:
2042 dbg("%s - Unrecognized IOSP status code %u\n", __func__, code);
2043 break;
1da177e4 2044 }
1da177e4
LT		 2045 return;
2046}
2047
2048
2049/*****************************************************************************
2050 * edge_tty_recv
2051 * this function passes data on to the tty flip buffer
2052 *****************************************************************************/
03f0dbf7
AC		 2053static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
2054 unsigned char *data, int length)
1da177e4
LT		 2055{
2056 int cnt;
2057
2058 do {
33f0f88f
AC		 2059 cnt = tty_buffer_request_room(tty, length);
2060 if (cnt < length) {
2061 dev_err(dev, "%s - dropping data, %d bytes lost\n",
441b62c1 2062 __func__, length - cnt);
03f0dbf7 2063 if (cnt == 0)
33f0f88f 2064 break;
1da177e4 2065 }
33f0f88f 2066 tty_insert_flip_string(tty, data, cnt);
1da177e4
LT		 2067 data += cnt;
2068 length -= cnt;
2069 } while (length > 0);
2070
2071 tty_flip_buffer_push(tty);
2072}
2073
2074
2075/*****************************************************************************
2076 * handle_new_msr
2077 * this function handles any change to the msr register for a port.
2078 *****************************************************************************/
2079static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2080{
2081 struct async_icount *icount;
2082
441b62c1 2083 dbg("%s %02x", __func__, newMsr);
1da177e4 2084
03f0dbf7
AC		 2085 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
2086 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1da177e4
LT		 2087 icount = &edge_port->icount;
2088
2089 /* update input line counters */
03f0dbf7 2090 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1da177e4 2091 icount->cts++;
03f0dbf7 2092 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1da177e4 2093 icount->dsr++;
03f0dbf7 2094 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1da177e4 2095 icount->dcd++;
03f0dbf7 2096 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1da177e4 2097 icount->rng++;
1da177e4
LT		 2098 wake_up_interruptible(&edge_port->delta_msr_wait);
2099 }
2100
2101 /* Save the new modem status */
2102 edge_port->shadowMSR = newMsr & 0xf0;
2103
2104 return;
2105}
2106
2107
2108/*****************************************************************************
2109 * handle_new_lsr
2110 * this function handles any change to the lsr register for a port.
2111 *****************************************************************************/
03f0dbf7
AC		 2112static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
2113 __u8 lsr, __u8 data)
1da177e4 2114{
03f0dbf7
AC		 2115 __u8 newLsr = (__u8) (lsr & (__u8)
2116 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2117 struct async_icount *icount;
1da177e4 2118
441b62c1 2119 dbg("%s - %02x", __func__, newLsr);
1da177e4
LT		 2120
2121 edge_port->shadowLSR = lsr;
2122
2123 if (newLsr & LSR_BREAK) {
03f0dbf7
AC		 2124 /*
2125 * Parity and Framing errors only count if they
2126 * occur exclusive of a break being
2127 * received.
2128 */
1da177e4
LT		 2129 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2130 }
2131
2132 /* Place LSR data byte into Rx buffer */
4a90f09b
AC		 2133 if (lsrData) {
2134 struct tty_struct *tty =
2135 tty_port_tty_get(&edge_port->port->port);
2136 if (tty) {
2137 edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
2138 tty_kref_put(tty);
2139 }
2140 }
1da177e4
LT		 2141 /* update input line counters */
2142 icount = &edge_port->icount;
03f0dbf7 2143 if (newLsr & LSR_BREAK)
1da177e4 2144 icount->brk++;
03f0dbf7 2145 if (newLsr & LSR_OVER_ERR)
1da177e4 2146 icount->overrun++;
03f0dbf7 2147 if (newLsr & LSR_PAR_ERR)
1da177e4 2148 icount->parity++;
03f0dbf7 2149 if (newLsr & LSR_FRM_ERR)
1da177e4 2150 icount->frame++;
1da177e4
LT		 2151
2152 return;
2153}
2154
2155
2156/****************************************************************************
2157 * sram_write
03f0dbf7 2158 * writes a number of bytes to the Edgeport device's sram starting at the
1da177e4
LT		 2159 * given address.
2160 * If successful returns the number of bytes written, otherwise it returns
2161 * a negative error number of the problem.
2162 ****************************************************************************/
03f0dbf7
AC		 2163static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2164 __u16 length, const __u8 *data)
1da177e4
LT		 2165{
2166 int result;
2167 __u16 current_length;
2168 unsigned char *transfer_buffer;
2169
441b62c1 2170 dbg("%s - %x, %x, %d", __func__, extAddr, addr, length);
1da177e4 2171
03f0dbf7 2172 transfer_buffer = kmalloc(64, GFP_KERNEL);
1da177e4 2173 if (!transfer_buffer) {
03f0dbf7
AC		 2174 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
2175 __func__, 64);
1da177e4
LT		 2176 return -ENOMEM;
2177 }
2178
2179 /* need to split these writes up into 64 byte chunks */
2180 result = 0;
2181 while (length > 0) {
03f0dbf7 2182 if (length > 64)
1da177e4 2183 current_length = 64;
03f0dbf7 2184 else
1da177e4 2185 current_length = length;
03f0dbf7
AC		 2186
2187/* dbg("%s - writing %x, %x, %d", __func__,
2188 extAddr, addr, current_length); */
2189 memcpy(transfer_buffer, data, current_length);
2190 result = usb_control_msg(serial->dev,
2191 usb_sndctrlpipe(serial->dev, 0),
2192 USB_REQUEST_ION_WRITE_RAM,
2193 0x40, addr, extAddr, transfer_buffer,
2194 current_length, 300);
1da177e4
LT		 2195 if (result < 0)
2196 break;
2197 length -= current_length;
2198 addr += current_length;
2199 data += current_length;
03f0dbf7 2200 }
1da177e4 2201
03f0dbf7 2202 kfree(transfer_buffer);
1da177e4
LT		 2203 return result;
2204}
2205
2206
2207/****************************************************************************
2208 * rom_write
2209 * writes a number of bytes to the Edgeport device's ROM starting at the
2210 * given address.
2211 * If successful returns the number of bytes written, otherwise it returns
2212 * a negative error number of the problem.
2213 ****************************************************************************/
03f0dbf7
AC		 2214static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2215 __u16 length, const __u8 *data)
1da177e4
LT		 2216{
2217 int result;
2218 __u16 current_length;
2219 unsigned char *transfer_buffer;
2220
03f0dbf7 2221/* dbg("%s - %x, %x, %d", __func__, extAddr, addr, length); */
1da177e4 2222
03f0dbf7 2223 transfer_buffer = kmalloc(64, GFP_KERNEL);
1da177e4 2224 if (!transfer_buffer) {
03f0dbf7
AC		 2225 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n",
2226 __func__, 64);
1da177e4
LT		 2227 return -ENOMEM;
2228 }
2229
2230 /* need to split these writes up into 64 byte chunks */
2231 result = 0;
2232 while (length > 0) {
03f0dbf7 2233 if (length > 64)
1da177e4 2234 current_length = 64;
03f0dbf7 2235 else
1da177e4 2236 current_length = length;
03f0dbf7
AC		 2237/* dbg("%s - writing %x, %x, %d", __func__,
2238 extAddr, addr, current_length); */
2239 memcpy(transfer_buffer, data, current_length);
2240 result = usb_control_msg(serial->dev,
2241 usb_sndctrlpipe(serial->dev, 0),
2242 USB_REQUEST_ION_WRITE_ROM, 0x40,
2243 addr, extAddr,
2244 transfer_buffer, current_length, 300);
1da177e4
LT		 2245 if (result < 0)
2246 break;
2247 length -= current_length;
2248 addr += current_length;
2249 data += current_length;
03f0dbf7 2250 }
1da177e4 2251
03f0dbf7 2252 kfree(transfer_buffer);
1da177e4
LT		 2253 return result;
2254}
2255
2256
2257/****************************************************************************
2258 * rom_read
2259 * reads a number of bytes from the Edgeport device starting at the given
2260 * address.
2261 * If successful returns the number of bytes read, otherwise it returns
2262 * a negative error number of the problem.
2263 ****************************************************************************/
03f0dbf7
AC		 2264static int rom_read(struct usb_serial *serial, __u16 extAddr,
2265 __u16 addr, __u16 length, __u8 *data)
1da177e4
LT		 2266{
2267 int result;
2268 __u16 current_length;
2269 unsigned char *transfer_buffer;
2270
441b62c1 2271 dbg("%s - %x, %x, %d", __func__, extAddr, addr, length);
1da177e4 2272
03f0dbf7 2273 transfer_buffer = kmalloc(64, GFP_KERNEL);
1da177e4 2274 if (!transfer_buffer) {
03f0dbf7
AC		 2275 dev_err(&serial->dev->dev,
2276 "%s - kmalloc(%d) failed.\n", __func__, 64);
1da177e4
LT		 2277 return -ENOMEM;
2278 }
2279
2280 /* need to split these reads up into 64 byte chunks */
2281 result = 0;
2282 while (length > 0) {
03f0dbf7 2283 if (length > 64)
1da177e4 2284 current_length = 64;
03f0dbf7 2285 else
1da177e4 2286 current_length = length;
03f0dbf7
AC		 2287/* dbg("%s - %x, %x, %d", __func__,
2288 extAddr, addr, current_length); */
2289 result = usb_control_msg(serial->dev,
2290 usb_rcvctrlpipe(serial->dev, 0),
2291 USB_REQUEST_ION_READ_ROM,
2292 0xC0, addr, extAddr, transfer_buffer,
2293 current_length, 300);
1da177e4
LT		 2294 if (result < 0)
2295 break;
03f0dbf7 2296 memcpy(data, transfer_buffer, current_length);
1da177e4
LT		 2297 length -= current_length;
2298 addr += current_length;
2299 data += current_length;
03f0dbf7 2300 }
1da177e4 2301
03f0dbf7 2302 kfree(transfer_buffer);
1da177e4
LT		 2303 return result;
2304}
2305
2306
2307/****************************************************************************
2308 * send_iosp_ext_cmd
2309 * Is used to send a IOSP message to the Edgeport device
2310 ****************************************************************************/
03f0dbf7
AC		 2311static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2312 __u8 command, __u8 param)
1da177e4
LT		 2313{
2314 unsigned char *buffer;
2315 unsigned char *currentCommand;
2316 int length = 0;
2317 int status = 0;
2318
441b62c1 2319 dbg("%s - %d, %d", __func__, command, param);
1da177e4 2320
03f0dbf7 2321 buffer = kmalloc(10, GFP_ATOMIC);
1da177e4 2322 if (!buffer) {
03f0dbf7
AC		 2323 dev_err(&edge_port->port->dev,
2324 "%s - kmalloc(%d) failed.\n", __func__, 10);
1da177e4
LT		 2325 return -ENOMEM;
2326 }
2327
2328 currentCommand = buffer;
2329
03f0dbf7
AC		 2330 MAKE_CMD_EXT_CMD(&currentCommand, &length,
2331 edge_port->port->number - edge_port->port->serial->minor,
2332 command, param);
1da177e4 2333
03f0dbf7 2334 status = write_cmd_usb(edge_port, buffer, length);
1da177e4
LT		 2335 if (status) {
2336 /* something bad happened, let's free up the memory */
2337 kfree(buffer);
2338 }
2339
2340 return status;
2341}
2342
2343
2344/*****************************************************************************
2345 * write_cmd_usb
2346 * this function writes the given buffer out to the bulk write endpoint.
2347 *****************************************************************************/
03f0dbf7
AC		 2348static int write_cmd_usb(struct edgeport_port *edge_port,
2349 unsigned char *buffer, int length)
1da177e4 2350{
03f0dbf7
AC		 2351 struct edgeport_serial *edge_serial =
2352 usb_get_serial_data(edge_port->port->serial);
1da177e4
LT		 2353 int status = 0;
2354 struct urb *urb;
2355 int timeout;
2356
03f0dbf7
AC		 2357 usb_serial_debug_data(debug, &edge_port->port->dev,
2358 __func__, length, buffer);
1da177e4
LT		 2359
2360 /* Allocate our next urb */
03f0dbf7 2361 urb = usb_alloc_urb(0, GFP_ATOMIC);
1da177e4
LT		 2362 if (!urb)
2363 return -ENOMEM;
2364
96c706ed 2365 atomic_inc(&CmdUrbs);
03f0dbf7
AC		 2366 dbg("%s - ALLOCATE URB %p (outstanding %d)",
2367 __func__, urb, atomic_read(&CmdUrbs));
1da177e4 2368
03f0dbf7
AC		 2369 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2370 usb_sndbulkpipe(edge_serial->serial->dev,
2371 edge_serial->bulk_out_endpoint),
2372 buffer, length, edge_bulk_out_cmd_callback, edge_port);
1da177e4 2373
cb8eaa8b 2374 edge_port->commandPending = true;
1da177e4
LT		 2375 status = usb_submit_urb(urb, GFP_ATOMIC);
2376
2377 if (status) {
2378 /* something went wrong */
03f0dbf7
AC		 2379 dev_err(&edge_port->port->dev,
2380 "%s - usb_submit_urb(write command) failed, status = %d\n",
2381 __func__, status);
1da177e4
LT		 2382 usb_kill_urb(urb);
2383 usb_free_urb(urb);
96c706ed 2384 atomic_dec(&CmdUrbs);
1da177e4
LT		 2385 return status;
2386 }
2387
03f0dbf7 2388 /* wait for command to finish */
1da177e4
LT		 2389 timeout = COMMAND_TIMEOUT;
2390#if 0
03f0dbf7 2391 wait_event(&edge_port->wait_command, !edge_port->commandPending);
1da177e4 2392
cb8eaa8b 2393 if (edge_port->commandPending) {
1da177e4 2394 /* command timed out */
441b62c1 2395 dbg("%s - command timed out", __func__);
1da177e4
LT		 2396 status = -EINVAL;
2397 }
2398#endif
2399 return status;
2400}
2401
2402
2403/*****************************************************************************
2404 * send_cmd_write_baud_rate
2405 * this function sends the proper command to change the baud rate of the
2406 * specified port.
2407 *****************************************************************************/
03f0dbf7
AC		 2408static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2409 int baudRate)
1da177e4 2410{
03f0dbf7
AC		 2411 struct edgeport_serial *edge_serial =
2412 usb_get_serial_data(edge_port->port->serial);
1da177e4
LT		 2413 unsigned char *cmdBuffer;
2414 unsigned char *currCmd;
2415 int cmdLen = 0;
2416 int divisor;
2417 int status;
03f0dbf7
AC		 2418 unsigned char number =
2419 edge_port->port->number - edge_port->port->serial->minor;
1da177e4 2420
bc71e479
AK		 2421 if (edge_serial->is_epic &&
2422 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
6e8cf775
GKH		 2423 dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d",
2424 edge_port->port->number, baudRate);
2425 return 0;
2426 }
2427
03f0dbf7
AC		 2428 dbg("%s - port = %d, baud = %d", __func__,
2429 edge_port->port->number, baudRate);
1da177e4 2430
03f0dbf7 2431 status = calc_baud_rate_divisor(baudRate, &divisor);
1da177e4 2432 if (status) {
03f0dbf7
AC		 2433 dev_err(&edge_port->port->dev, "%s - bad baud rate\n",
2434 __func__);
1da177e4
LT		 2435 return status;
2436 }
2437
03f0dbf7
AC		 2438 /* Alloc memory for the string of commands. */
2439 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
1da177e4 2440 if (!cmdBuffer) {
03f0dbf7
AC		 2441 dev_err(&edge_port->port->dev,
2442 "%s - kmalloc(%d) failed.\n", __func__, 0x100);
1da177e4
LT		 2443 return -ENOMEM;
2444 }
2445 currCmd = cmdBuffer;
2446
03f0dbf7
AC		 2447 /* Enable access to divisor latch */
2448 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
1da177e4 2449
03f0dbf7
AC		 2450 /* Write the divisor itself */
2451 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2452 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
1da177e4 2453
03f0dbf7
AC		 2454 /* Restore original value to disable access to divisor latch */
2455 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2456 edge_port->shadowLCR);
1da177e4 2457
03f0dbf7 2458 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
1da177e4
LT		 2459 if (status) {
2460 /* something bad happened, let's free up the memory */
03f0dbf7 2461 kfree(cmdBuffer);
1da177e4
LT		 2462 }
2463
2464 return status;
2465}
2466
2467
2468/*****************************************************************************
2469 * calc_baud_rate_divisor
2470 * this function calculates the proper baud rate divisor for the specified
2471 * baud rate.
2472 *****************************************************************************/
03f0dbf7 2473static int calc_baud_rate_divisor(int baudrate, int *divisor)
1da177e4
LT		 2474{
2475 int i;
2476 __u16 custom;
2477
2478
441b62c1 2479 dbg("%s - %d", __func__, baudrate);
1da177e4 2480
52950ed4 2481 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
03f0dbf7 2482 if (divisor_table[i].BaudRate == baudrate) {
1da177e4
LT		 2483 *divisor = divisor_table[i].Divisor;
2484 return 0;
2485 }
2486 }
2487
03f0dbf7
AC		 2488 /* We have tried all of the standard baud rates
2489 * lets try to calculate the divisor for this baud rate
2490 * Make sure the baud rate is reasonable */
1da177e4 2491 if (baudrate > 50 && baudrate < 230400) {
03f0dbf7 2492 /* get divisor */
1da177e4
LT		 2493 custom = (__u16)((230400L + baudrate/2) / baudrate);
2494
2495 *divisor = custom;
2496
441b62c1 2497 dbg("%s - Baud %d = %d\n", __func__, baudrate, custom);
1da177e4
LT		 2498 return 0;
2499 }
2500
2501 return -1;
2502}
2503
2504
2505/*****************************************************************************
2506 * send_cmd_write_uart_register
fd589a8f 2507 * this function builds up a uart register message and sends to the device.
1da177e4 2508 *****************************************************************************/
03f0dbf7
AC		 2509static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2510 __u8 regNum, __u8 regValue)
1da177e4 2511{
03f0dbf7
AC		 2512 struct edgeport_serial *edge_serial =
2513 usb_get_serial_data(edge_port->port->serial);
1da177e4
LT		 2514 unsigned char *cmdBuffer;
2515 unsigned char *currCmd;
2516 unsigned long cmdLen = 0;
2517 int status;
2518
03f0dbf7
AC		 2519 dbg("%s - write to %s register 0x%02x",
2520 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
1da177e4 2521
bc71e479
AK		 2522 if (edge_serial->is_epic &&
2523 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2524 regNum == MCR) {
beb7dd86 2525 dbg("SendCmdWriteUartReg - Not writing to MCR Register");
6e8cf775
GKH		 2526 return 0;
2527 }
2528
bc71e479
AK		 2529 if (edge_serial->is_epic &&
2530 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2531 regNum == LCR) {
03f0dbf7 2532 dbg("SendCmdWriteUartReg - Not writing to LCR Register");
6e8cf775
GKH		 2533 return 0;
2534 }
2535
03f0dbf7
AC		 2536 /* Alloc memory for the string of commands. */
2537 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2538 if (cmdBuffer == NULL)
1da177e4 2539 return -ENOMEM;
1da177e4
LT		 2540
2541 currCmd = cmdBuffer;
2542
03f0dbf7
AC		 2543 /* Build a cmd in the buffer to write the given register */
2544 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen,
2545 edge_port->port->number - edge_port->port->serial->minor,
2546 regNum, regValue);
1da177e4
LT		 2547
2548 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2549 if (status) {
2550 /* something bad happened, let's free up the memory */
03f0dbf7 2551 kfree(cmdBuffer);
1da177e4
LT		 2552 }
2553
2554 return status;
2555}
2556
2557
2558/*****************************************************************************
2559 * change_port_settings
03f0dbf7
AC		 2560 * This routine is called to set the UART on the device to match the
2561 * specified new settings.
1da177e4 2562 *****************************************************************************/
95da310e
AC		 2563
2564static void change_port_settings(struct tty_struct *tty,
2565 struct edgeport_port *edge_port, struct ktermios *old_termios)
1da177e4 2566{
03f0dbf7
AC		 2567 struct edgeport_serial *edge_serial =
2568 usb_get_serial_data(edge_port->port->serial);
1da177e4
LT		 2569 int baud;
2570 unsigned cflag;
2571 __u8 mask = 0xff;
2572 __u8 lData;
2573 __u8 lParity;
2574 __u8 lStop;
2575 __u8 rxFlow;
2576 __u8 txFlow;
2577 int status;
2578
441b62c1 2579 dbg("%s - port %d", __func__, edge_port->port->number);
1da177e4 2580
cb8eaa8b
RK		 2581 if (!edge_port->open &&
2582 !edge_port->openPending) {
441b62c1 2583 dbg("%s - port not opened", __func__);
1da177e4
LT		 2584 return;
2585 }
2586
1da177e4
LT		 2587 cflag = tty->termios->c_cflag;
2588
2589 switch (cflag & CSIZE) {
03f0dbf7
AC		 2590 case CS5:
2591 lData = LCR_BITS_5; mask = 0x1f;
2592 dbg("%s - data bits = 5", __func__);
2593 break;
2594 case CS6:
2595 lData = LCR_BITS_6; mask = 0x3f;
2596 dbg("%s - data bits = 6", __func__);
2597 break;
2598 case CS7:
2599 lData = LCR_BITS_7; mask = 0x7f;
2600 dbg("%s - data bits = 7", __func__);
2601 break;
2602 default:
2603 case CS8:
2604 lData = LCR_BITS_8;
2605 dbg("%s - data bits = 8", __func__);
2606 break;
1da177e4
LT		 2607 }
2608
2609 lParity = LCR_PAR_NONE;
2610 if (cflag & PARENB) {
2611 if (cflag & CMSPAR) {
2612 if (cflag & PARODD) {
2613 lParity = LCR_PAR_MARK;
441b62c1 2614 dbg("%s - parity = mark", __func__);
1da177e4
LT		 2615 } else {
2616 lParity = LCR_PAR_SPACE;
441b62c1 2617 dbg("%s - parity = space", __func__);
1da177e4
LT		 2618 }
2619 } else if (cflag & PARODD) {
2620 lParity = LCR_PAR_ODD;
441b62c1 2621 dbg("%s - parity = odd", __func__);
1da177e4
LT		 2622 } else {
2623 lParity = LCR_PAR_EVEN;
441b62c1 2624 dbg("%s - parity = even", __func__);
1da177e4
LT		 2625 }
2626 } else {
441b62c1 2627 dbg("%s - parity = none", __func__);
1da177e4
LT		 2628 }
2629
2630 if (cflag & CSTOPB) {
2631 lStop = LCR_STOP_2;
441b62c1 2632 dbg("%s - stop bits = 2", __func__);
1da177e4
LT		 2633 } else {
2634 lStop = LCR_STOP_1;
441b62c1 2635 dbg("%s - stop bits = 1", __func__);
1da177e4
LT		 2636 }
2637
2638 /* figure out the flow control settings */
2639 rxFlow = txFlow = 0x00;
2640 if (cflag & CRTSCTS) {
2641 rxFlow |= IOSP_RX_FLOW_RTS;
2642 txFlow |= IOSP_TX_FLOW_CTS;
441b62c1 2643 dbg("%s - RTS/CTS is enabled", __func__);
1da177e4 2644 } else {
441b62c1 2645 dbg("%s - RTS/CTS is disabled", __func__);
1da177e4
LT		 2646 }
2647
03f0dbf7
AC		 2648 /* if we are implementing XON/XOFF, set the start and stop character
2649 in the device */
1da177e4
LT		 2650 if (I_IXOFF(tty) || I_IXON(tty)) {
2651 unsigned char stop_char = STOP_CHAR(tty);
2652 unsigned char start_char = START_CHAR(tty);
2653
6e8cf775
GKH		 2654 if ((!edge_serial->is_epic) ||
2655 ((edge_serial->is_epic) &&
2656 (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) {
03f0dbf7
AC		 2657 send_iosp_ext_cmd(edge_port,
2658 IOSP_CMD_SET_XON_CHAR, start_char);
2659 send_iosp_ext_cmd(edge_port,
2660 IOSP_CMD_SET_XOFF_CHAR, stop_char);
6e8cf775 2661 }
1da177e4
LT		 2662
2663 /* if we are implementing INBOUND XON/XOFF */
2664 if (I_IXOFF(tty)) {
2665 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
03f0dbf7
AC		 2666 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2667 __func__, start_char, stop_char);
1da177e4 2668 } else {
441b62c1 2669 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
1da177e4
LT		 2670 }
2671
2672 /* if we are implementing OUTBOUND XON/XOFF */
2673 if (I_IXON(tty)) {
2674 txFlow |= IOSP_TX_FLOW_XON_XOFF;
03f0dbf7
AC		 2675 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2676 __func__, start_char, stop_char);
1da177e4 2677 } else {
441b62c1 2678 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
1da177e4
LT		 2679 }
2680 }
2681
2682 /* Set flow control to the configured value */
6e8cf775
GKH		 2683 if ((!edge_serial->is_epic) ||
2684 ((edge_serial->is_epic) &&
2685 (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)))
2686 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2687 if ((!edge_serial->is_epic) ||
2688 ((edge_serial->is_epic) &&
2689 (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)))
2690 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
1da177e4
LT		 2691
2692
2693 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2694 edge_port->shadowLCR |= (lData | lParity | lStop);
2695
2696 edge_port->validDataMask = mask;
2697
2698 /* Send the updated LCR value to the EdgePort */
03f0dbf7
AC		 2699 status = send_cmd_write_uart_register(edge_port, LCR,
2700 edge_port->shadowLCR);
2701 if (status != 0)
1da177e4 2702 return;
1da177e4
LT		 2703
2704 /* set up the MCR register and send it to the EdgePort */
2705 edge_port->shadowMCR = MCR_MASTER_IE;
03f0dbf7 2706 if (cflag & CBAUD)
1da177e4 2707 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
03f0dbf7
AC		 2708
2709 status = send_cmd_write_uart_register(edge_port, MCR,
2710 edge_port->shadowMCR);
2711 if (status != 0)
1da177e4 2712 return;
1da177e4
LT		 2713
2714 /* Determine divisor based on baud rate */
2715 baud = tty_get_baud_rate(tty);
2716 if (!baud) {
2717 /* pick a default, any default... */
2718 baud = 9600;
2719 }
2720
441b62c1 2721 dbg("%s - baud rate = %d", __func__, baud);
03f0dbf7 2722 status = send_cmd_write_baud_rate(edge_port, baud);
6ce073bd
AC		 2723 if (status == -1) {
2724 /* Speed change was not possible - put back the old speed */
2725 baud = tty_termios_baud_rate(old_termios);
2726 tty_encode_baud_rate(tty, baud, baud);
2727 }
1da177e4
LT		 2728 return;
2729}
2730
2731
2732/****************************************************************************
2733 * unicode_to_ascii
2734 * Turns a string from Unicode into ASCII.
2735 * Doesn't do a good job with any characters that are outside the normal
2736 * ASCII range, but it's only for debugging...
2737 * NOTE: expects the unicode in LE format
2738 ****************************************************************************/
03f0dbf7
AC		 2739static void unicode_to_ascii(char *string, int buflen,
2740 __le16 *unicode, int unicode_size)
1da177e4
LT		 2741{
2742 int i;
2743
ad93375a 2744 if (buflen <= 0) /* never happens, but... */
1da177e4 2745 return;
ad93375a 2746 --buflen; /* space for nul */
1da177e4 2747
ad93375a
PZ		 2748 for (i = 0; i < unicode_size; i++) {
2749 if (i >= buflen)
2750 break;
1da177e4 2751 string[i] = (char)(le16_to_cpu(unicode[i]));
ad93375a
PZ		 2752 }
2753 string[i] = 0x00;
1da177e4
LT		 2754}
2755
2756
2757/****************************************************************************
2758 * get_manufacturing_desc
03f0dbf7 2759 * reads in the manufacturing descriptor and stores it into the serial
1da177e4
LT		 2760 * structure.
2761 ****************************************************************************/
03f0dbf7 2762static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
1da177e4
LT		 2763{
2764 int response;
2765
2766 dbg("getting manufacturer descriptor");
2767
03f0dbf7
AC		 2768 response = rom_read(edge_serial->serial,
2769 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2770 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2771 EDGE_MANUF_DESC_LEN,
2772 (__u8 *)(&edge_serial->manuf_descriptor));
1da177e4 2773
03f0dbf7
AC		 2774 if (response < 1)
2775 dev_err(&edge_serial->serial->dev->dev,
2776 "error in getting manufacturer descriptor\n");
2777 else {
1da177e4
LT		 2778 char string[30];
2779 dbg("**Manufacturer Descriptor");
03f0dbf7
AC		 2780 dbg(" RomSize: %dK",
2781 edge_serial->manuf_descriptor.RomSize);
2782 dbg(" RamSize: %dK",
2783 edge_serial->manuf_descriptor.RamSize);
2784 dbg(" CpuRev: %d",
2785 edge_serial->manuf_descriptor.CpuRev);
2786 dbg(" BoardRev: %d",
2787 edge_serial->manuf_descriptor.BoardRev);
2788 dbg(" NumPorts: %d",
2789 edge_serial->manuf_descriptor.NumPorts);
2790 dbg(" DescDate: %d/%d/%d",
2791 edge_serial->manuf_descriptor.DescDate[0],
2792 edge_serial->manuf_descriptor.DescDate[1],
2793 edge_serial->manuf_descriptor.DescDate[2]+1900);
4bc203d9 2794 unicode_to_ascii(string, sizeof(string),
03f0dbf7
AC		 2795 edge_serial->manuf_descriptor.SerialNumber,
2796 edge_serial->manuf_descriptor.SerNumLength/2);
1da177e4 2797 dbg(" SerialNumber: %s", string);
4bc203d9 2798 unicode_to_ascii(string, sizeof(string),
03f0dbf7
AC		 2799 edge_serial->manuf_descriptor.AssemblyNumber,
2800 edge_serial->manuf_descriptor.AssemblyNumLength/2);
1da177e4 2801 dbg(" AssemblyNumber: %s", string);
4bc203d9 2802 unicode_to_ascii(string, sizeof(string),
ad93375a
PZ		 2803 edge_serial->manuf_descriptor.OemAssyNumber,
2804 edge_serial->manuf_descriptor.OemAssyNumLength/2);
1da177e4 2805 dbg(" OemAssyNumber: %s", string);
03f0dbf7
AC		 2806 dbg(" UartType: %d",
2807 edge_serial->manuf_descriptor.UartType);
2808 dbg(" IonPid: %d",
2809 edge_serial->manuf_descriptor.IonPid);
2810 dbg(" IonConfig: %d",
2811 edge_serial->manuf_descriptor.IonConfig);
1da177e4
LT		 2812 }
2813}
2814
2815
2816/****************************************************************************
2817 * get_boot_desc
03f0dbf7 2818 * reads in the bootloader descriptor and stores it into the serial
1da177e4
LT		 2819 * structure.
2820 ****************************************************************************/
03f0dbf7 2821static void get_boot_desc(struct edgeport_serial *edge_serial)
1da177e4
LT		 2822{
2823 int response;
2824
2825 dbg("getting boot descriptor");
2826
03f0dbf7
AC		 2827 response = rom_read(edge_serial->serial,
2828 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2829 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2830 EDGE_BOOT_DESC_LEN,
2831 (__u8 *)(&edge_serial->boot_descriptor));
1da177e4 2832
03f0dbf7
AC		 2833 if (response < 1)
2834 dev_err(&edge_serial->serial->dev->dev,
2835 "error in getting boot descriptor\n");
2836 else {
1da177e4 2837 dbg("**Boot Descriptor:");
03f0dbf7
AC		 2838 dbg(" BootCodeLength: %d",
2839 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2840 dbg(" MajorVersion: %d",
2841 edge_serial->boot_descriptor.MajorVersion);
2842 dbg(" MinorVersion: %d",
2843 edge_serial->boot_descriptor.MinorVersion);
2844 dbg(" BuildNumber: %d",
2845 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2846 dbg(" Capabilities: 0x%x",
2847 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2848 dbg(" UConfig0: %d",
2849 edge_serial->boot_descriptor.UConfig0);
2850 dbg(" UConfig1: %d",
2851 edge_serial->boot_descriptor.UConfig1);
1da177e4
LT		 2852 }
2853}
2854
2855
2856/****************************************************************************
2857 * load_application_firmware
2858 * This is called to load the application firmware to the device
2859 ****************************************************************************/
03f0dbf7 2860static void load_application_firmware(struct edgeport_serial *edge_serial)
1da177e4 2861{
5b9ea932
JS		 2862 const struct ihex_binrec *rec;
2863 const struct firmware *fw;
2864 const char *fw_name;
2865 const char *fw_info;
1da177e4 2866 int response;
5b9ea932
JS		 2867 __u32 Operaddr;
2868 __u16 build;
1da177e4
LT		 2869
2870 switch (edge_serial->product_info.iDownloadFile) {
2871 case EDGE_DOWNLOAD_FILE_I930:
5b9ea932
JS		 2872 fw_info = "downloading firmware version (930)";
2873 fw_name = "edgeport/down.fw";
1da177e4
LT		 2874 break;
2875
2876 case EDGE_DOWNLOAD_FILE_80251:
5b9ea932
JS		 2877 fw_info = "downloading firmware version (80251)";
2878 fw_name = "edgeport/down2.fw";
1da177e4
LT		 2879 break;
2880
2881 case EDGE_DOWNLOAD_FILE_NONE:
2882 dbg ("No download file specified, skipping download\n");
2883 return;
2884
2885 default:
2886 return;
2887 }
2888
5b9ea932
JS		 2889 response = request_ihex_firmware(&fw, fw_name,
2890 &edge_serial->serial->dev->dev);
2891 if (response) {
2892 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
2893 fw_name, response);
2894 return;
2895 }
2896
2897 rec = (const struct ihex_binrec *)fw->data;
2898 build = (rec->data[2] << 8) | rec->data[3];
2899
2900 dbg("%s %d.%d.%d", fw_info, rec->data[0], rec->data[1], build);
2901
2902 edge_serial->product_info.FirmwareMajorVersion = fw->data[0];
2903 edge_serial->product_info.FirmwareMinorVersion = fw->data[1];
2904 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
1da177e4 2905
5b9ea932
JS		 2906 for (rec = ihex_next_binrec(rec); rec;
2907 rec = ihex_next_binrec(rec)) {
2908 Operaddr = be32_to_cpu(rec->addr);
2909 response = sram_write(edge_serial->serial,
2910 Operaddr >> 16,
2911 Operaddr & 0xFFFF,
2912 be16_to_cpu(rec->len),
2913 &rec->data[0]);
1da177e4 2914 if (response < 0) {
5b9ea932
JS		 2915 dev_err(&edge_serial->serial->dev->dev,
2916 "sram_write failed (%x, %x, %d)\n",
2917 Operaddr >> 16, Operaddr & 0xFFFF,
2918 be16_to_cpu(rec->len));
1da177e4
LT		 2919 break;
2920 }
2921 }
2922
2923 dbg("sending exec_dl_code");
2924 response = usb_control_msg (edge_serial->serial->dev,
2925 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2926 USB_REQUEST_ION_EXEC_DL_CODE,
2927 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2928
5b9ea932 2929 release_firmware(fw);
1da177e4
LT		 2930 return;
2931}
2932
2933
2934/****************************************************************************
2935 * edge_startup
2936 ****************************************************************************/
03f0dbf7 2937static int edge_startup(struct usb_serial *serial)
1da177e4
LT		 2938{
2939 struct edgeport_serial *edge_serial;
2940 struct edgeport_port *edge_port;
2941 struct usb_device *dev;
bfd5df3c 2942 int i, j;
6e8cf775 2943 int response;
cb8eaa8b
RK		 2944 bool interrupt_in_found;
2945 bool bulk_in_found;
2946 bool bulk_out_found;
6e8cf775
GKH		 2947 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2948 EDGE_COMPATIBILITY_MASK1,
2949 EDGE_COMPATIBILITY_MASK2 };
1da177e4
LT		 2950
2951 dev = serial->dev;
2952
2953 /* create our private serial structure */
80b6ca48 2954 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
1da177e4 2955 if (edge_serial == NULL) {
441b62c1 2956 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
1da177e4
LT		 2957 return -ENOMEM;
2958 }
1da177e4
LT		 2959 spin_lock_init(&edge_serial->es_lock);
2960 edge_serial->serial = serial;
2961 usb_set_serial_data(serial, edge_serial);
2962
2963 /* get the name for the device from the device */
f10718f5 2964 i = usb_string(dev, dev->descriptor.iManufacturer,
ad93375a 2965 &edge_serial->name[0], MAX_NAME_LEN+1);
f10718f5
DC		 2966 if (i < 0)
2967 i = 0;
ad93375a 2968 edge_serial->name[i++] = ' ';
f10718f5 2969 usb_string(dev, dev->descriptor.iProduct,
ad93375a 2970 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
1da177e4
LT		 2971
2972 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2973
6e8cf775
GKH		 2974 /* Read the epic descriptor */
2975 if (get_epic_descriptor(edge_serial) <= 0) {
2976 /* memcpy descriptor to Supports structures */
2977 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2978 sizeof(struct edge_compatibility_bits));
1da177e4 2979
6e8cf775 2980 /* get the manufacturing descriptor for this device */
03f0dbf7 2981 get_manufacturing_desc(edge_serial);
1da177e4 2982
6e8cf775 2983 /* get the boot descriptor */
03f0dbf7 2984 get_boot_desc(edge_serial);
6e8cf775
GKH		 2985
2986 get_product_info(edge_serial);
2987 }
1da177e4
LT		 2988
2989 /* set the number of ports from the manufacturing description */
2990 /* serial->num_ports = serial->product_info.NumPorts; */
6e8cf775
GKH		 2991 if ((!edge_serial->is_epic) &&
2992 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2993 dev_warn(&serial->dev->dev, "Device Reported %d serial ports "
2994 "vs. core thinking we have %d ports, email "
898eb71c 2995 "greg@kroah.com this information.\n",
6e8cf775
GKH		 2996 edge_serial->product_info.NumPorts,
2997 serial->num_ports);
1da177e4
LT		 2998 }
2999
441b62c1 3000 dbg("%s - time 1 %ld", __func__, jiffies);
1da177e4 3001
6e8cf775
GKH		 3002 /* If not an EPiC device */
3003 if (!edge_serial->is_epic) {
3004 /* now load the application firmware into this device */
03f0dbf7 3005 load_application_firmware(edge_serial);
1da177e4 3006
441b62c1 3007 dbg("%s - time 2 %ld", __func__, jiffies);
1da177e4 3008
6e8cf775 3009 /* Check current Edgeport EEPROM and update if necessary */
03f0dbf7 3010 update_edgeport_E2PROM(edge_serial);
1da177e4 3011
441b62c1 3012 dbg("%s - time 3 %ld", __func__, jiffies);
6e8cf775
GKH		 3013
3014 /* set the configuration to use #1 */
03f0dbf7
AC		 3015/* dbg("set_configuration 1"); */
3016/* usb_set_configuration (dev, 1); */
6e8cf775 3017 }
5b9ea932
JS		 3018 dbg(" FirmwareMajorVersion %d.%d.%d",
3019 edge_serial->product_info.FirmwareMajorVersion,
3020 edge_serial->product_info.FirmwareMinorVersion,
3021 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
1da177e4 3022
03f0dbf7 3023 /* we set up the pointers to the endpoints in the edge_open function,
1da177e4
LT		 3024 * as the structures aren't created yet. */
3025
3026 /* set up our port private structures */
3027 for (i = 0; i < serial->num_ports; ++i) {
03f0dbf7 3028 edge_port = kmalloc(sizeof(struct edgeport_port), GFP_KERNEL);
1da177e4 3029 if (edge_port == NULL) {
03f0dbf7
AC		 3030 dev_err(&serial->dev->dev, "%s - Out of memory\n",
3031 __func__);
bfd5df3c 3032 for (j = 0; j < i; ++j) {
03f0dbf7
AC		 3033 kfree(usb_get_serial_port_data(serial->port[j]));
3034 usb_set_serial_port_data(serial->port[j],
3035 NULL);
bfd5df3c 3036 }
1da177e4
LT		 3037 usb_set_serial_data(serial, NULL);
3038 kfree(edge_serial);
3039 return -ENOMEM;
3040 }
03f0dbf7 3041 memset(edge_port, 0, sizeof(struct edgeport_port));
1da177e4
LT		 3042 spin_lock_init(&edge_port->ep_lock);
3043 edge_port->port = serial->port[i];
3044 usb_set_serial_port_data(serial->port[i], edge_port);
3045 }
6e8cf775
GKH		 3046
3047 response = 0;
3048
3049 if (edge_serial->is_epic) {
03f0dbf7
AC		 3050 /* EPIC thing, set up our interrupt polling now and our read
3051 * urb, so that the device knows it really is connected. */
cb8eaa8b 3052 interrupt_in_found = bulk_in_found = bulk_out_found = false;
03f0dbf7
AC		 3053 for (i = 0; i < serial->interface->altsetting[0]
3054 .desc.bNumEndpoints; ++i) {
6e8cf775
GKH		 3055 struct usb_endpoint_descriptor *endpoint;
3056 int buffer_size;
3057
03f0dbf7
AC		 3058 endpoint = &serial->interface->altsetting[0].
3059 endpoint[i].desc;
6e8cf775 3060 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
cb8eaa8b 3061 if (!interrupt_in_found &&
6e8cf775
GKH		 3062 (usb_endpoint_is_int_in(endpoint))) {
3063 /* we found a interrupt in endpoint */
3064 dbg("found interrupt in");
3065
3066 /* not set up yet, so do it now */
03f0dbf7
AC		 3067 edge_serial->interrupt_read_urb =
3068 usb_alloc_urb(0, GFP_KERNEL);
6e8cf775 3069 if (!edge_serial->interrupt_read_urb) {
194343d9 3070 dev_err(&dev->dev, "out of memory\n");
6e8cf775
GKH		 3071 return -ENOMEM;
3072 }
03f0dbf7
AC		 3073 edge_serial->interrupt_in_buffer =
3074 kmalloc(buffer_size, GFP_KERNEL);
6e8cf775 3075 if (!edge_serial->interrupt_in_buffer) {
194343d9 3076 dev_err(&dev->dev, "out of memory\n");
6e8cf775
GKH		 3077 usb_free_urb(edge_serial->interrupt_read_urb);
3078 return -ENOMEM;
3079 }
03f0dbf7
AC		 3080 edge_serial->interrupt_in_endpoint =
3081 endpoint->bEndpointAddress;
6e8cf775
GKH		 3082
3083 /* set up our interrupt urb */
03f0dbf7
AC		 3084 usb_fill_int_urb(
3085 edge_serial->interrupt_read_urb,
3086 dev,
3087 usb_rcvintpipe(dev,
3088 endpoint->bEndpointAddress),
3089 edge_serial->interrupt_in_buffer,
3090 buffer_size,
3091 edge_interrupt_callback,
3092 edge_serial,
3093 endpoint->bInterval);
6e8cf775 3094
cb8eaa8b 3095 interrupt_in_found = true;
6e8cf775
GKH		 3096 }
3097
cb8eaa8b 3098 if (!bulk_in_found &&
03f0dbf7 3099 (usb_endpoint_is_bulk_in(endpoint))) {
6e8cf775
GKH		 3100 /* we found a bulk in endpoint */
3101 dbg("found bulk in");
3102
3103 /* not set up yet, so do it now */
03f0dbf7
AC		 3104 edge_serial->read_urb =
3105 usb_alloc_urb(0, GFP_KERNEL);
6e8cf775 3106 if (!edge_serial->read_urb) {
194343d9 3107 dev_err(&dev->dev, "out of memory\n");
6e8cf775
GKH		 3108 return -ENOMEM;
3109 }
03f0dbf7
AC		 3110 edge_serial->bulk_in_buffer =
3111 kmalloc(buffer_size, GFP_KERNEL);
6e8cf775 3112 if (!edge_serial->bulk_in_buffer) {
194343d9 3113 dev_err(&dev->dev, "out of memory\n");
6e8cf775
GKH		 3114 usb_free_urb(edge_serial->read_urb);
3115 return -ENOMEM;
3116 }
03f0dbf7
AC		 3117 edge_serial->bulk_in_endpoint =
3118 endpoint->bEndpointAddress;
6e8cf775
GKH		 3119
3120 /* set up our bulk in urb */
3121 usb_fill_bulk_urb(edge_serial->read_urb, dev,
03f0dbf7
AC		 3122 usb_rcvbulkpipe(dev,
3123 endpoint->bEndpointAddress),
3124 edge_serial->bulk_in_buffer,
3125 le16_to_cpu(endpoint->wMaxPacketSize),
3126 edge_bulk_in_callback,
3127 edge_serial);
cb8eaa8b 3128 bulk_in_found = true;
6e8cf775
GKH		 3129 }
3130
cb8eaa8b 3131 if (!bulk_out_found &&
6e8cf775
GKH		 3132 (usb_endpoint_is_bulk_out(endpoint))) {
3133 /* we found a bulk out endpoint */
3134 dbg("found bulk out");
03f0dbf7
AC		 3135 edge_serial->bulk_out_endpoint =
3136 endpoint->bEndpointAddress;
cb8eaa8b 3137 bulk_out_found = true;
6e8cf775
GKH		 3138 }
3139 }
3140
cb8eaa8b 3141 if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
194343d9
GKH		 3142 dev_err(&dev->dev, "Error - the proper endpoints "
3143 "were not found!\n");
6e8cf775
GKH		 3144 return -ENODEV;
3145 }
3146
3147 /* start interrupt read for this edgeport this interrupt will
3148 * continue as long as the edgeport is connected */
03f0dbf7
AC		 3149 response = usb_submit_urb(edge_serial->interrupt_read_urb,
3150 GFP_KERNEL);
6e8cf775 3151 if (response)
194343d9
GKH		 3152 dev_err(&dev->dev,
3153 "%s - Error %d submitting control urb\n",
3154 __func__, response);
6e8cf775
GKH		 3155 }
3156 return response;
1da177e4
LT		 3157}
3158
3159
3160/****************************************************************************
f9c99bb8 3161 * edge_disconnect
1da177e4
LT		 3162 * This function is called whenever the device is removed from the usb bus.
3163 ****************************************************************************/
f9c99bb8 3164static void edge_disconnect(struct usb_serial *serial)
1da177e4 3165{
6e8cf775 3166 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
1da177e4 3167
441b62c1 3168 dbg("%s", __func__);
1da177e4
LT		 3169
3170 /* stop reads and writes on all ports */
6e8cf775
GKH		 3171 /* free up our endpoint stuff */
3172 if (edge_serial->is_epic) {
74ac07e8 3173 usb_kill_urb(edge_serial->interrupt_read_urb);
6e8cf775
GKH		 3174 usb_free_urb(edge_serial->interrupt_read_urb);
3175 kfree(edge_serial->interrupt_in_buffer);
3176
74ac07e8 3177 usb_kill_urb(edge_serial->read_urb);
6e8cf775
GKH		 3178 usb_free_urb(edge_serial->read_urb);
3179 kfree(edge_serial->bulk_in_buffer);
3180 }
f9c99bb8
AS		 3181}
3182
3183
3184/****************************************************************************
3185 * edge_release
3186 * This function is called when the device structure is deallocated.
3187 ****************************************************************************/
3188static void edge_release(struct usb_serial *serial)
3189{
3190 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3191 int i;
3192
3193 dbg("%s", __func__);
3194
3195 for (i = 0; i < serial->num_ports; ++i)
3196 kfree(usb_get_serial_port_data(serial->port[i]));
6e8cf775
GKH		 3197
3198 kfree(edge_serial);
1da177e4
LT		 3199}
3200
3201
3202/****************************************************************************
3203 * edgeport_init
3204 * This is called by the module subsystem, or on startup to initialize us
3205 ****************************************************************************/
3206static int __init edgeport_init(void)
3207{
3208 int retval;
3209
3210 retval = usb_serial_register(&edgeport_2port_device);
3211 if (retval)
3212 goto failed_2port_device_register;
3213 retval = usb_serial_register(&edgeport_4port_device);
3214 if (retval)
3215 goto failed_4port_device_register;
3216 retval = usb_serial_register(&edgeport_8port_device);
3217 if (retval)
3218 goto failed_8port_device_register;
6e8cf775
GKH		 3219 retval = usb_serial_register(&epic_device);
3220 if (retval)
3221 goto failed_epic_device_register;
1da177e4 3222 retval = usb_register(&io_driver);
03f0dbf7 3223 if (retval)
1da177e4 3224 goto failed_usb_register;
96c706ed 3225 atomic_set(&CmdUrbs, 0);
c197a8db
GKH		 3226 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
3227 DRIVER_DESC "\n");
1da177e4
LT		 3228 return 0;
3229
3230failed_usb_register:
6e8cf775
GKH		 3231 usb_serial_deregister(&epic_device);
3232failed_epic_device_register:
1da177e4
LT		 3233 usb_serial_deregister(&edgeport_8port_device);
3234failed_8port_device_register:
3235 usb_serial_deregister(&edgeport_4port_device);
3236failed_4port_device_register:
3237 usb_serial_deregister(&edgeport_2port_device);
3238failed_2port_device_register:
3239 return retval;
3240}
3241
3242
3243/****************************************************************************
3244 * edgeport_exit
3245 * Called when the driver is about to be unloaded.
3246 ****************************************************************************/
3247static void __exit edgeport_exit (void)
3248{
03f0dbf7
AC		 3249 usb_deregister(&io_driver);
3250 usb_serial_deregister(&edgeport_2port_device);
3251 usb_serial_deregister(&edgeport_4port_device);
3252 usb_serial_deregister(&edgeport_8port_device);
3253 usb_serial_deregister(&epic_device);
1da177e4
LT		 3254}
3255
3256module_init(edgeport_init);
3257module_exit(edgeport_exit);
3258
3259/* Module information */
03f0dbf7
AC		 3260MODULE_AUTHOR(DRIVER_AUTHOR);
3261MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4 3262MODULE_LICENSE("GPL");
5b9ea932
JS		 3263MODULE_FIRMWARE("edgeport/boot.fw");
3264MODULE_FIRMWARE("edgeport/boot2.fw");
3265MODULE_FIRMWARE("edgeport/down.fw");
3266MODULE_FIRMWARE("edgeport/down2.fw");
1da177e4
LT		 3267
3268module_param(debug, bool, S_IRUGO | S_IWUSR);
3269MODULE_PARM_DESC(debug, "Debug enabled or not");
kernel source for telekom puls (alcatel/mediatek)