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[mirror_ubuntu-bionic-kernel.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>
1da177e4
LT		 35#include <linux/slab.h>
36#include <linux/tty.h>
37#include <linux/tty_driver.h>
38#include <linux/tty_flip.h>
39#include <linux/module.h>
40#include <linux/spinlock.h>
41#include <linux/serial.h>
42#include <linux/ioctl.h>
43#include <linux/wait.h>
5b9ea932
JS		 44#include <linux/firmware.h>
45#include <linux/ihex.h>
03f0dbf7 46#include <linux/uaccess.h>
1da177e4 47#include <linux/usb.h>
a969888c 48#include <linux/usb/serial.h>
1da177e4
LT		 49#include "io_edgeport.h"
50#include "io_ionsp.h" /* info for the iosp messages */
51#include "io_16654.h" /* 16654 UART defines */
52
1da177e4
LT		 53#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
54#define DRIVER_DESC "Edgeport USB Serial Driver"
55
1da177e4
LT		 56#define MAX_NAME_LEN 64
57
1da177e4 58#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
1da177e4
LT		 59
60/* receive port state */
61enum RXSTATE {
03f0dbf7
AC		 62 EXPECT_HDR1 = 0, /* Expect header byte 1 */
63 EXPECT_HDR2 = 1, /* Expect header byte 2 */
64 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
65 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
1da177e4
LT		 66};
67
68
03f0dbf7
AC		 69/* Transmit Fifo
70 * This Transmit queue is an extension of the edgeport Rx buffer.
71 * The maximum amount of data buffered in both the edgeport
1da177e4
LT		 72 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
73 */
74struct TxFifo {
75 unsigned int head; /* index to head pointer (write) */
76 unsigned int tail; /* index to tail pointer (read) */
77 unsigned int count; /* Bytes in queue */
78 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
79 unsigned char *fifo; /* allocated Buffer */
80};
81
82/* This structure holds all of the local port information */
83struct edgeport_port {
84 __u16 txCredits; /* our current credits for this port */
85 __u16 maxTxCredits; /* the max size of the port */
86
87 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
88 struct urb *write_urb; /* write URB for this port */
cb8eaa8b 89 bool write_in_progress; /* 'true' while a write URB is outstanding */
1da177e4
LT		 90 spinlock_t ep_lock;
91
92 __u8 shadowLCR; /* last LCR value received */
93 __u8 shadowMCR; /* last MCR value received */
94 __u8 shadowMSR; /* last MSR value received */
95 __u8 shadowLSR; /* last LSR value received */
96 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
97 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
98 __u8 validDataMask;
99 __u32 baudRate;
100
cb8eaa8b
RK		 101 bool open;
102 bool openPending;
103 bool commandPending;
104 bool closePending;
105 bool chaseResponsePending;
1da177e4
LT		 106
107 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
108 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
109 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
1da177e4 110
1da177e4
LT		 111 struct usb_serial_port *port; /* loop back to the owner of this object */
112};
113
114
115/* This structure holds all of the individual device information */
116struct edgeport_serial {
ad93375a 117 char name[MAX_NAME_LEN+2]; /* string name of this device */
1da177e4
LT		 118
119 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
120 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
121 struct edgeport_product_info product_info; /* Product Info */
6e8cf775
GKH		 122 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
123 int is_epic; /* flag if EPiC device or not */
1da177e4
LT		 124
125 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
03f0dbf7
AC		 126 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
127 struct urb *interrupt_read_urb; /* our interrupt urb */
1da177e4
LT		 128
129 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
03f0dbf7
AC		 130 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
131 struct urb *read_urb; /* our bulk read urb */
cb8eaa8b 132 bool read_in_progress;
1da177e4
LT		 133 spinlock_t es_lock;
134
135 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
136
137 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
138
139 enum RXSTATE rxState; /* the current state of the bulk receive processor */
140 __u8 rxHeader1; /* receive header byte 1 */
141 __u8 rxHeader2; /* receive header byte 2 */
142 __u8 rxHeader3; /* receive header byte 3 */
143 __u8 rxPort; /* the port that we are currently receiving data for */
144 __u8 rxStatusCode; /* the receive status code */
145 __u8 rxStatusParam; /* the receive status paramater */
146 __s16 rxBytesRemaining; /* the number of port bytes left to read */
147 struct usb_serial *serial; /* loop back to the owner of this object */
148};
149
150/* baud rate information */
151struct divisor_table_entry {
152 __u32 BaudRate;
153 __u16 Divisor;
154};
155
03f0dbf7
AC		 156/*
157 * Define table of divisors for Rev A EdgePort/4 hardware
158 * These assume a 3.6864MHz crystal, the standard /16, and
159 * MCR.7 = 0.
160 */
161
4c4c9432 162static const struct divisor_table_entry divisor_table[] = {
03f0dbf7
AC		 163 { 50, 4608},
164 { 75, 3072},
165 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
166 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
1da177e4
LT		 167 { 150, 1536},
168 { 300, 768},
169 { 600, 384},
170 { 1200, 192},
171 { 1800, 128},
172 { 2400, 96},
173 { 4800, 48},
174 { 7200, 32},
175 { 9600, 24},
176 { 14400, 16},
177 { 19200, 12},
178 { 38400, 6},
179 { 57600, 4},
180 { 115200, 2},
181 { 230400, 1},
182};
183
36ccce49
GKH		 184/* Number of outstanding Command Write Urbs */
185static atomic_t CmdUrbs = ATOMIC_INIT(0);
1da177e4
LT		 186
187
188/* local function prototypes */
189
190/* function prototypes for all URB callbacks */
03f0dbf7
AC		 191static void edge_interrupt_callback(struct urb *urb);
192static void edge_bulk_in_callback(struct urb *urb);
193static void edge_bulk_out_data_callback(struct urb *urb);
194static void edge_bulk_out_cmd_callback(struct urb *urb);
1da177e4
LT		 195
196/* function prototypes for the usbserial callbacks */
a509a7e4 197static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
335f8514 198static void edge_close(struct usb_serial_port *port);
03f0dbf7
AC		 199static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
200 const unsigned char *buf, int count);
201static int edge_write_room(struct tty_struct *tty);
202static int edge_chars_in_buffer(struct tty_struct *tty);
203static void edge_throttle(struct tty_struct *tty);
204static void edge_unthrottle(struct tty_struct *tty);
205static void edge_set_termios(struct tty_struct *tty,
206 struct usb_serial_port *port,
207 struct ktermios *old_termios);
00a0d0d6 208static int edge_ioctl(struct tty_struct *tty,
03f0dbf7
AC		 209 unsigned int cmd, unsigned long arg);
210static void edge_break(struct tty_struct *tty, int break_state);
60b33c13 211static int edge_tiocmget(struct tty_struct *tty);
20b9d177 212static int edge_tiocmset(struct tty_struct *tty,
03f0dbf7
AC		 213 unsigned int set, unsigned int clear);
214static int edge_startup(struct usb_serial *serial);
f9c99bb8
AS		 215static void edge_disconnect(struct usb_serial *serial);
216static void edge_release(struct usb_serial *serial);
c27f3efc
JH		 217static int edge_port_probe(struct usb_serial_port *port);
218static int edge_port_remove(struct usb_serial_port *port);
1da177e4
LT		 219
220#include "io_tables.h" /* all of the devices that this driver supports */
221
1da177e4 222/* function prototypes for all of our local functions */
03f0dbf7
AC		 223
224static void process_rcvd_data(struct edgeport_serial *edge_serial,
225 unsigned char *buffer, __u16 bufferLength);
226static void process_rcvd_status(struct edgeport_serial *edge_serial,
227 __u8 byte2, __u8 byte3);
2e124b4a
JS		 228static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
229 int length);
03f0dbf7
AC		 230static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
231static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
232 __u8 lsr, __u8 data);
233static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
234 __u8 param);
984f6868 235static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor);
03f0dbf7
AC		 236static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
237 int baudRate);
238static void change_port_settings(struct tty_struct *tty,
239 struct edgeport_port *edge_port,
240 struct ktermios *old_termios);
241static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
242 __u8 regNum, __u8 regValue);
243static int write_cmd_usb(struct edgeport_port *edge_port,
244 unsigned char *buffer, int writeLength);
245static void send_more_port_data(struct edgeport_serial *edge_serial,
246 struct edgeport_port *edge_port);
247
248static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
249 __u16 length, const __u8 *data);
250static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
251 __u16 length, __u8 *data);
252static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
253 __u16 length, const __u8 *data);
254static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
255static void get_boot_desc(struct edgeport_serial *edge_serial);
256static void load_application_firmware(struct edgeport_serial *edge_serial);
257
258static void unicode_to_ascii(char *string, int buflen,
259 __le16 *unicode, int unicode_size);
260
261
262/* ************************************************************************ */
263/* ************************************************************************ */
264/* ************************************************************************ */
265/* ************************************************************************ */
1da177e4
LT		 266
267/************************************************************************
268 * *
269 * update_edgeport_E2PROM() Compare current versions of *
270 * Boot ROM and Manufacture *
271 * Descriptors with versions *
272 * embedded in this driver *
273 * *
274 ************************************************************************/
03f0dbf7 275static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
1da177e4 276{
984f6868 277 struct device *dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 278 __u32 BootCurVer;
279 __u32 BootNewVer;
5b9ea932
JS		 280 __u8 BootMajorVersion;
281 __u8 BootMinorVersion;
282 __u16 BootBuildNumber;
283 __u32 Bootaddr;
284 const struct ihex_binrec *rec;
285 const struct firmware *fw;
286 const char *fw_name;
1da177e4
LT		 287 int response;
288
1da177e4 289 switch (edge_serial->product_info.iDownloadFile) {
03f0dbf7
AC		 290 case EDGE_DOWNLOAD_FILE_I930:
291 fw_name = "edgeport/boot.fw";
292 break;
293 case EDGE_DOWNLOAD_FILE_80251:
294 fw_name = "edgeport/boot2.fw";
295 break;
296 default:
297 return;
1da177e4
LT		 298 }
299
5b9ea932
JS		 300 response = request_ihex_firmware(&fw, fw_name,
301 &edge_serial->serial->dev->dev);
302 if (response) {
984f6868 303 dev_err(dev, "Failed to load image \"%s\" err %d\n",
5b9ea932
JS		 304 fw_name, response);
305 return;
306 }
307
308 rec = (const struct ihex_binrec *)fw->data;
309 BootMajorVersion = rec->data[0];
310 BootMinorVersion = rec->data[1];
311 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
312
03f0dbf7 313 /* Check Boot Image Version */
1da177e4
LT		 314 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
315 (edge_serial->boot_descriptor.MinorVersion << 16) +
316 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
317
318 BootNewVer = (BootMajorVersion << 24) +
319 (BootMinorVersion << 16) +
5b9ea932 320 BootBuildNumber;
1da177e4 321
984f6868 322 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n",
1da177e4
LT		 323 edge_serial->boot_descriptor.MajorVersion,
324 edge_serial->boot_descriptor.MinorVersion,
325 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
326
327
328 if (BootNewVer > BootCurVer) {
984f6868 329 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
1da177e4
LT		 330 edge_serial->boot_descriptor.MajorVersion,
331 edge_serial->boot_descriptor.MinorVersion,
332 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
5b9ea932 333 BootMajorVersion, BootMinorVersion, BootBuildNumber);
1da177e4 334
984f6868 335 dev_dbg(dev, "Downloading new Boot Image\n");
1da177e4 336
5b9ea932
JS		 337 for (rec = ihex_next_binrec(rec); rec;
338 rec = ihex_next_binrec(rec)) {
339 Bootaddr = be32_to_cpu(rec->addr);
340 response = rom_write(edge_serial->serial,
341 Bootaddr >> 16,
342 Bootaddr & 0xFFFF,
343 be16_to_cpu(rec->len),
344 &rec->data[0]);
1da177e4 345 if (response < 0) {
5b9ea932
JS		 346 dev_err(&edge_serial->serial->dev->dev,
347 "rom_write failed (%x, %x, %d)\n",
348 Bootaddr >> 16, Bootaddr & 0xFFFF,
349 be16_to_cpu(rec->len));
1da177e4
LT		 350 break;
351 }
352 }
353 } else {
984f6868 354 dev_dbg(dev, "Boot Image -- already up to date\n");
1da177e4 355 }
5b9ea932 356 release_firmware(fw);
1da177e4
LT		 357}
358
1da177e4
LT		 359#if 0
360/************************************************************************
361 *
362 * Get string descriptor from device
363 *
364 ************************************************************************/
03f0dbf7
AC		 365static int get_string_desc(struct usb_device *dev, int Id,
366 struct usb_string_descriptor **pRetDesc)
1da177e4
LT		 367{
368 struct usb_string_descriptor StringDesc;
369 struct usb_string_descriptor *pStringDesc;
370
984f6868 371 dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id);
1da177e4 372
03f0dbf7
AC		 373 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
374 sizeof(StringDesc)))
1da177e4 375 return 0;
1da177e4 376
03f0dbf7
AC		 377 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
378 if (!pStringDesc)
1da177e4 379 return -1;
1da177e4 380
03f0dbf7
AC		 381 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
382 StringDesc.bLength)) {
1da177e4
LT		 383 kfree(pStringDesc);
384 return -1;
385 }
386
387 *pRetDesc = pStringDesc;
388 return 0;
389}
390#endif
391
984f6868
GKH		 392static void dump_product_info(struct edgeport_serial *edge_serial,
393 struct edgeport_product_info *product_info)
6e8cf775 394{
984f6868
GKH		 395 struct device *dev = &edge_serial->serial->dev->dev;
396
03f0dbf7 397 /* Dump Product Info structure */
984f6868
GKH		 398 dev_dbg(dev, "**Product Information:\n");
399 dev_dbg(dev, " ProductId %x\n", product_info->ProductId);
400 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts);
401 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer);
402 dev_dbg(dev, " IsServer %d\n", product_info->IsServer);
403 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232);
404 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422);
405 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485);
406 dev_dbg(dev, " RomSize %d\n", product_info->RomSize);
407 dev_dbg(dev, " RamSize %d\n", product_info->RamSize);
408 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev);
409 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev);
410 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n",
411 product_info->BootMajorVersion,
412 product_info->BootMinorVersion,
413 le16_to_cpu(product_info->BootBuildNumber));
414 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n",
415 product_info->FirmwareMajorVersion,
416 product_info->FirmwareMinorVersion,
417 le16_to_cpu(product_info->FirmwareBuildNumber));
418 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n",
419 product_info->ManufactureDescDate[0],
420 product_info->ManufactureDescDate[1],
421 product_info->ManufactureDescDate[2]+1900);
422 dev_dbg(dev, " iDownloadFile 0x%x\n",
423 product_info->iDownloadFile);
424 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer);
6e8cf775
GKH		 425}
426
1da177e4
LT		 427static void get_product_info(struct edgeport_serial *edge_serial)
428{
429 struct edgeport_product_info *product_info = &edge_serial->product_info;
430
03f0dbf7
AC		 431 memset(product_info, 0, sizeof(struct edgeport_product_info));
432
433 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
434 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
435 product_info->ProdInfoVer = 0;
436
437 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
438 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
439 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
440 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
441
442 product_info->BootMajorVersion =
443 edge_serial->boot_descriptor.MajorVersion;
444 product_info->BootMinorVersion =
445 edge_serial->boot_descriptor.MinorVersion;
446 product_info->BootBuildNumber =
447 edge_serial->boot_descriptor.BuildNumber;
448
449 memcpy(product_info->ManufactureDescDate,
450 edge_serial->manuf_descriptor.DescDate,
451 sizeof(edge_serial->manuf_descriptor.DescDate));
452
453 /* check if this is 2nd generation hardware */
454 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
455 & ION_DEVICE_ID_80251_NETCHIP)
456 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
457 else
458 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
984f6868 459
03f0dbf7 460 /* Determine Product type and set appropriate flags */
1da177e4 461 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
03f0dbf7
AC		 462 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
463 case ION_DEVICE_ID_EDGEPORT_4T:
464 case ION_DEVICE_ID_EDGEPORT_4:
465 case ION_DEVICE_ID_EDGEPORT_2:
466 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
467 case ION_DEVICE_ID_EDGEPORT_8:
468 case ION_DEVICE_ID_EDGEPORT_421:
469 case ION_DEVICE_ID_EDGEPORT_21:
470 case ION_DEVICE_ID_EDGEPORT_2_DIN:
471 case ION_DEVICE_ID_EDGEPORT_4_DIN:
472 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
473 product_info->IsRS232 = 1;
474 break;
1da177e4 475
03f0dbf7
AC		 476 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
477 product_info->IsRS422 = 1;
478 product_info->IsRS485 = 1;
479 break;
1da177e4 480
03f0dbf7
AC		 481 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
482 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
483 product_info->IsRS422 = 1;
484 break;
1da177e4
LT		 485 }
486
984f6868 487 dump_product_info(edge_serial, product_info);
6e8cf775 488}
1da177e4 489
6e8cf775
GKH		 490static int get_epic_descriptor(struct edgeport_serial *ep)
491{
492 int result;
493 struct usb_serial *serial = ep->serial;
494 struct edgeport_product_info *product_info = &ep->product_info;
e4457d97 495 struct edge_compatibility_descriptor *epic;
6e8cf775 496 struct edge_compatibility_bits *bits;
984f6868 497 struct device *dev = &serial->dev->dev;
6e8cf775
GKH		 498
499 ep->is_epic = 0;
e4457d97
JH		 500
501 epic = kmalloc(sizeof(*epic), GFP_KERNEL);
502 if (!epic)
503 return -ENOMEM;
504
6e8cf775
GKH		 505 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
506 USB_REQUEST_ION_GET_EPIC_DESC,
507 0xC0, 0x00, 0x00,
e4457d97 508 epic, sizeof(*epic),
6e8cf775 509 300);
e4457d97 510 if (result == sizeof(*epic)) {
6e8cf775 511 ep->is_epic = 1;
e4457d97 512 memcpy(&ep->epic_descriptor, epic, sizeof(*epic));
6e8cf775
GKH		 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;
984f6868 524 dump_product_info(ep, product_info);
6e8cf775
GKH		 525
526 bits = &ep->epic_descriptor.Supports;
984f6868
GKH		 527 dev_dbg(dev, "**EPIC descriptor:\n");
528 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE");
529 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE");
530 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE");
531 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE");
532 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
533 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
534 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE");
535 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE");
536 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
537 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE");
538 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE");
539 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
540 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE");
e4457d97
JH		 541
542 result = 0;
543 } else if (result >= 0) {
544 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n",
545 result);
546 result = -EIO;
6e8cf775
GKH		 547 }
548
e4457d97
JH		 549 kfree(epic);
550
6e8cf775 551 return result;
1da177e4
LT		 552}
553
554
555/************************************************************************/
556/************************************************************************/
557/* U S B C A L L B A C K F U N C T I O N S */
558/* U S B C A L L B A C K F U N C T I O N S */
559/************************************************************************/
560/************************************************************************/
561
562/*****************************************************************************
563 * edge_interrupt_callback
03f0dbf7 564 * this is the callback function for when we have received data on the
1da177e4
LT		 565 * interrupt endpoint.
566 *****************************************************************************/
03f0dbf7 567static void edge_interrupt_callback(struct urb *urb)
1da177e4 568{
984f6868
GKH		 569 struct edgeport_serial *edge_serial = urb->context;
570 struct device *dev;
1da177e4
LT		 571 struct edgeport_port *edge_port;
572 struct usb_serial_port *port;
573 unsigned char *data = urb->transfer_buffer;
574 int length = urb->actual_length;
575 int bytes_avail;
576 int position;
577 int txCredits;
578 int portNumber;
579 int result;
2a393f5f 580 int status = urb->status;
1da177e4 581
2a393f5f 582 switch (status) {
1da177e4
LT		 583 case 0:
584 /* success */
585 break;
586 case -ECONNRESET:
587 case -ENOENT:
588 case -ESHUTDOWN:
589 /* this urb is terminated, clean up */
984f6868 590 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1da177e4
LT		 591 return;
592 default:
984f6868 593 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
1da177e4
LT		 594 goto exit;
595 }
596
984f6868
GKH		 597 dev = &edge_serial->serial->dev->dev;
598
03f0dbf7 599 /* process this interrupt-read even if there are no ports open */
1da177e4 600 if (length) {
59d33f2f 601 usb_serial_debug_data(dev, __func__, length, data);
1da177e4
LT		 602
603 if (length > 1) {
604 bytes_avail = data[0] | (data[1] << 8);
605 if (bytes_avail) {
606 spin_lock(&edge_serial->es_lock);
607 edge_serial->rxBytesAvail += bytes_avail;
984f6868
GKH		 608 dev_dbg(dev,
609 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
610 __func__, bytes_avail,
611 edge_serial->rxBytesAvail,
612 edge_serial->read_in_progress);
1da177e4
LT		 613
614 if (edge_serial->rxBytesAvail > 0 &&
615 !edge_serial->read_in_progress) {
984f6868 616 dev_dbg(dev, "%s - posting a read\n", __func__);
cb8eaa8b 617 edge_serial->read_in_progress = true;
1da177e4 618
03f0dbf7
AC		 619 /* we have pending bytes on the
620 bulk in pipe, send a request */
1da177e4
LT		 621 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
622 if (result) {
984f6868
GKH		 623 dev_err(dev,
624 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
625 __func__, result);
cb8eaa8b 626 edge_serial->read_in_progress = false;
1da177e4
LT		 627 }
628 }
629 spin_unlock(&edge_serial->es_lock);
630 }
631 }
632 /* grab the txcredits for the ports if available */
633 position = 2;
634 portNumber = 0;
03f0dbf7
AC		 635 while ((position < length) &&
636 (portNumber < edge_serial->serial->num_ports)) {
1da177e4
LT		 637 txCredits = data[position] | (data[position+1] << 8);
638 if (txCredits) {
639 port = edge_serial->serial->port[portNumber];
640 edge_port = usb_get_serial_port_data(port);
641 if (edge_port->open) {
642 spin_lock(&edge_port->ep_lock);
643 edge_port->txCredits += txCredits;
644 spin_unlock(&edge_port->ep_lock);
984f6868
GKH		 645 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
646 __func__, portNumber,
647 edge_port->txCredits);
1da177e4 648
03f0dbf7
AC		 649 /* tell the tty driver that something
650 has changed */
6aad04f2 651 tty_port_tty_wakeup(&edge_port->port->port);
03f0dbf7
AC		 652 /* Since we have more credit, check
653 if more data can be sent */
654 send_more_port_data(edge_serial,
655 edge_port);
1da177e4
LT		 656 }
657 }
658 position += 2;
659 ++portNumber;
660 }
661 }
662
663exit:
03f0dbf7
AC		 664 result = usb_submit_urb(urb, GFP_ATOMIC);
665 if (result)
666 dev_err(&urb->dev->dev,
667 "%s - Error %d submitting control urb\n",
668 __func__, result);
1da177e4
LT		 669}
670
671
672/*****************************************************************************
673 * edge_bulk_in_callback
03f0dbf7 674 * this is the callback function for when we have received data on the
1da177e4
LT		 675 * bulk in endpoint.
676 *****************************************************************************/
03f0dbf7 677static void edge_bulk_in_callback(struct urb *urb)
1da177e4 678{
cdc97792 679 struct edgeport_serial *edge_serial = urb->context;
984f6868 680 struct device *dev;
1da177e4 681 unsigned char *data = urb->transfer_buffer;
2a393f5f 682 int retval;
1da177e4 683 __u16 raw_data_length;
2a393f5f 684 int status = urb->status;
1da177e4 685
2a393f5f 686 if (status) {
984f6868
GKH		 687 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
688 __func__, status);
cb8eaa8b 689 edge_serial->read_in_progress = false;
1da177e4
LT		 690 return;
691 }
692
693 if (urb->actual_length == 0) {
984f6868 694 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
cb8eaa8b 695 edge_serial->read_in_progress = false;
1da177e4
LT		 696 return;
697 }
698
984f6868 699 dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 700 raw_data_length = urb->actual_length;
701
59d33f2f 702 usb_serial_debug_data(dev, __func__, raw_data_length, data);
1da177e4
LT		 703
704 spin_lock(&edge_serial->es_lock);
705
706 /* decrement our rxBytes available by the number that we just got */
707 edge_serial->rxBytesAvail -= raw_data_length;
708
984f6868
GKH		 709 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
710 raw_data_length, edge_serial->rxBytesAvail);
1da177e4 711
03f0dbf7 712 process_rcvd_data(edge_serial, data, urb->actual_length);
1da177e4
LT		 713
714 /* check to see if there's any more data for us to read */
715 if (edge_serial->rxBytesAvail > 0) {
984f6868 716 dev_dbg(dev, "%s - posting a read\n", __func__);
2a393f5f
GKH		 717 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
718 if (retval) {
984f6868
GKH		 719 dev_err(dev,
720 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
721 __func__, retval);
cb8eaa8b 722 edge_serial->read_in_progress = false;
1da177e4
LT		 723 }
724 } else {
cb8eaa8b 725 edge_serial->read_in_progress = false;
1da177e4
LT		 726 }
727
728 spin_unlock(&edge_serial->es_lock);
729}
730
731
732/*****************************************************************************
733 * edge_bulk_out_data_callback
03f0dbf7
AC		 734 * this is the callback function for when we have finished sending
735 * serial data on the bulk out endpoint.
1da177e4 736 *****************************************************************************/
03f0dbf7 737static void edge_bulk_out_data_callback(struct urb *urb)
1da177e4 738{
cdc97792 739 struct edgeport_port *edge_port = urb->context;
2a393f5f 740 int status = urb->status;
1da177e4 741
2a393f5f 742 if (status) {
984f6868
GKH		 743 dev_dbg(&urb->dev->dev,
744 "%s - nonzero write bulk status received: %d\n",
745 __func__, status);
1da177e4
LT		 746 }
747
6aad04f2
JS		 748 if (edge_port->open)
749 tty_port_tty_wakeup(&edge_port->port->port);
1da177e4 750
03f0dbf7 751 /* Release the Write URB */
cb8eaa8b 752 edge_port->write_in_progress = false;
1da177e4 753
03f0dbf7
AC		 754 /* Check if more data needs to be sent */
755 send_more_port_data((struct edgeport_serial *)
756 (usb_get_serial_data(edge_port->port->serial)), edge_port);
1da177e4
LT		 757}
758
759
760/*****************************************************************************
761 * BulkOutCmdCallback
03f0dbf7
AC		 762 * this is the callback function for when we have finished sending a
763 * command on the bulk out endpoint.
1da177e4 764 *****************************************************************************/
03f0dbf7 765static void edge_bulk_out_cmd_callback(struct urb *urb)
1da177e4 766{
cdc97792 767 struct edgeport_port *edge_port = urb->context;
1da177e4
LT		 768 int status = urb->status;
769
96c706ed 770 atomic_dec(&CmdUrbs);
984f6868
GKH		 771 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n",
772 __func__, urb, atomic_read(&CmdUrbs));
1da177e4
LT		 773
774
775 /* clean up the transfer buffer */
1bc3c9e1 776 kfree(urb->transfer_buffer);
1da177e4
LT		 777
778 /* Free the command urb */
03f0dbf7 779 usb_free_urb(urb);
1da177e4
LT		 780
781 if (status) {
984f6868
GKH		 782 dev_dbg(&urb->dev->dev,
783 "%s - nonzero write bulk status received: %d\n",
784 __func__, status);
1da177e4
LT		 785 return;
786 }
787
1da177e4 788 /* tell the tty driver that something has changed */
6aad04f2
JS		 789 if (edge_port->open)
790 tty_port_tty_wakeup(&edge_port->port->port);
1da177e4
LT		 791
792 /* we have completed the command */
cb8eaa8b 793 edge_port->commandPending = false;
1da177e4
LT		 794 wake_up(&edge_port->wait_command);
795}
796
797
798/*****************************************************************************
799 * Driver tty interface functions
800 *****************************************************************************/
801
802/*****************************************************************************
803 * SerialOpen
804 * this function is called by the tty driver when a port is opened
805 * If successful, we return 0
806 * Otherwise we return a negative error number.
807 *****************************************************************************/
a509a7e4 808static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1da177e4
LT		 809{
810 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
984f6868 811 struct device *dev = &port->dev;
1da177e4
LT		 812 struct usb_serial *serial;
813 struct edgeport_serial *edge_serial;
814 int response;
815
1da177e4
LT		 816 if (edge_port == NULL)
817 return -ENODEV;
818
03f0dbf7
AC		 819 /* see if we've set up our endpoint info yet (can't set it up
820 in edge_startup as the structures were not set up at that time.) */
1da177e4
LT		 821 serial = port->serial;
822 edge_serial = usb_get_serial_data(serial);
95da310e 823 if (edge_serial == NULL)
1da177e4 824 return -ENODEV;
1da177e4
LT		 825 if (edge_serial->interrupt_in_buffer == NULL) {
826 struct usb_serial_port *port0 = serial->port[0];
03f0dbf7 827
1da177e4 828 /* not set up yet, so do it now */
03f0dbf7
AC		 829 edge_serial->interrupt_in_buffer =
830 port0->interrupt_in_buffer;
831 edge_serial->interrupt_in_endpoint =
832 port0->interrupt_in_endpointAddress;
1da177e4
LT		 833 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
834 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
03f0dbf7
AC		 835 edge_serial->bulk_in_endpoint =
836 port0->bulk_in_endpointAddress;
1da177e4 837 edge_serial->read_urb = port0->read_urb;
03f0dbf7
AC		 838 edge_serial->bulk_out_endpoint =
839 port0->bulk_out_endpointAddress;
840
1da177e4
LT		 841 /* set up our interrupt urb */
842 usb_fill_int_urb(edge_serial->interrupt_read_urb,
03f0dbf7
AC		 843 serial->dev,
844 usb_rcvintpipe(serial->dev,
845 port0->interrupt_in_endpointAddress),
846 port0->interrupt_in_buffer,
847 edge_serial->interrupt_read_urb->transfer_buffer_length,
848 edge_interrupt_callback, edge_serial,
849 edge_serial->interrupt_read_urb->interval);
850
1da177e4
LT		 851 /* set up our bulk in urb */
852 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
03f0dbf7
AC		 853 usb_rcvbulkpipe(serial->dev,
854 port0->bulk_in_endpointAddress),
855 port0->bulk_in_buffer,
856 edge_serial->read_urb->transfer_buffer_length,
857 edge_bulk_in_callback, edge_serial);
cb8eaa8b 858 edge_serial->read_in_progress = false;
1da177e4
LT		 859
860 /* start interrupt read for this edgeport
03f0dbf7
AC		 861 * this interrupt will continue as long
862 * as the edgeport is connected */
863 response = usb_submit_urb(edge_serial->interrupt_read_urb,
864 GFP_KERNEL);
1da177e4 865 if (response) {
984f6868
GKH		 866 dev_err(dev, "%s - Error %d submitting control urb\n",
867 __func__, response);
1da177e4
LT		 868 }
869 }
03f0dbf7 870
1da177e4
LT		 871 /* initialize our wait queues */
872 init_waitqueue_head(&edge_port->wait_open);
873 init_waitqueue_head(&edge_port->wait_chase);
1da177e4
LT		 874 init_waitqueue_head(&edge_port->wait_command);
875
1da177e4 876 /* initialize our port settings */
03f0dbf7
AC		 877 edge_port->txCredits = 0; /* Can't send any data yet */
878 /* Must always set this bit to enable ints! */
879 edge_port->shadowMCR = MCR_MASTER_IE;
cb8eaa8b 880 edge_port->chaseResponsePending = false;
1da177e4
LT		 881
882 /* send a open port command */
cb8eaa8b
RK		 883 edge_port->openPending = true;
884 edge_port->open = false;
03f0dbf7 885 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
1da177e4
LT		 886
887 if (response < 0) {
984f6868 888 dev_err(dev, "%s - error sending open port command\n", __func__);
cb8eaa8b 889 edge_port->openPending = false;
1da177e4
LT		 890 return -ENODEV;
891 }
892
893 /* now wait for the port to be completely opened */
03f0dbf7
AC		 894 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
895 OPEN_TIMEOUT);
1da177e4 896
cb8eaa8b 897 if (!edge_port->open) {
1da177e4 898 /* open timed out */
984f6868 899 dev_dbg(dev, "%s - open timedout\n", __func__);
cb8eaa8b 900 edge_port->openPending = false;
1da177e4
LT		 901 return -ENODEV;
902 }
903
904 /* create the txfifo */
905 edge_port->txfifo.head = 0;
906 edge_port->txfifo.tail = 0;
907 edge_port->txfifo.count = 0;
908 edge_port->txfifo.size = edge_port->maxTxCredits;
03f0dbf7 909 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
1da177e4
LT		 910
911 if (!edge_port->txfifo.fifo) {
335f8514 912 edge_close(port);
1da177e4
LT		 913 return -ENOMEM;
914 }
915
916 /* Allocate a URB for the write */
03f0dbf7 917 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
cb8eaa8b 918 edge_port->write_in_progress = false;
1da177e4
LT		 919
920 if (!edge_port->write_urb) {
335f8514 921 edge_close(port);
1da177e4
LT		 922 return -ENOMEM;
923 }
924
1143832e
GKH		 925 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
926 __func__, edge_port->maxTxCredits);
1da177e4
LT		 927
928 return 0;
929}
930
931
932/************************************************************************
933 *
934 * block_until_chase_response
935 *
936 * This function will block the close until one of the following:
937 * 1. Response to our Chase comes from Edgeport
dc0d5c1e 938 * 2. A timeout of 10 seconds without activity has expired
1da177e4
LT		 939 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
940 *
941 ************************************************************************/
942static void block_until_chase_response(struct edgeport_port *edge_port)
943{
984f6868 944 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 945 DEFINE_WAIT(wait);
946 __u16 lastCredits;
947 int timeout = 1*HZ;
948 int loop = 10;
949
950 while (1) {
03f0dbf7 951 /* Save Last credits */
1da177e4
LT		 952 lastCredits = edge_port->txCredits;
953
03f0dbf7 954 /* Did we get our Chase response */
cb8eaa8b 955 if (!edge_port->chaseResponsePending) {
984f6868 956 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
1da177e4 957
03f0dbf7
AC		 958 /* did we get all of our credit back? */
959 if (edge_port->txCredits == edge_port->maxTxCredits) {
984f6868 960 dev_dbg(dev, "%s - Got all credits\n", __func__);
1da177e4
LT		 961 return;
962 }
963 }
964
03f0dbf7
AC		 965 /* Block the thread for a while */
966 prepare_to_wait(&edge_port->wait_chase, &wait,
967 TASK_UNINTERRUPTIBLE);
1da177e4
LT		 968 schedule_timeout(timeout);
969 finish_wait(&edge_port->wait_chase, &wait);
970
971 if (lastCredits == edge_port->txCredits) {
03f0dbf7 972 /* No activity.. count down. */
1da177e4
LT		 973 loop--;
974 if (loop == 0) {
cb8eaa8b 975 edge_port->chaseResponsePending = false;
984f6868 976 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
1da177e4
LT		 977 return;
978 }
979 } else {
03f0dbf7 980 /* Reset timeout value back to 10 seconds */
984f6868 981 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
03f0dbf7 982 lastCredits, edge_port->txCredits);
1da177e4
LT		 983 loop = 10;
984 }
985 }
986}
987
988
989/************************************************************************
990 *
991 * block_until_tx_empty
992 *
993 * This function will block the close until one of the following:
994 * 1. TX count are 0
995 * 2. The edgeport has stopped
dc0d5c1e 996 * 3. A timeout of 3 seconds without activity has expired
1da177e4
LT		 997 *
998 ************************************************************************/
03f0dbf7 999static void block_until_tx_empty(struct edgeport_port *edge_port)
1da177e4 1000{
984f6868 1001 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 1002 DEFINE_WAIT(wait);
1003 struct TxFifo *fifo = &edge_port->txfifo;
1004 __u32 lastCount;
1005 int timeout = HZ/10;
1006 int loop = 30;
1007
1008 while (1) {
03f0dbf7 1009 /* Save Last count */
1da177e4
LT		 1010 lastCount = fifo->count;
1011
03f0dbf7 1012 /* Is the Edgeport Buffer empty? */
1da177e4 1013 if (lastCount == 0) {
984f6868 1014 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1da177e4
LT		 1015 return;
1016 }
1017
03f0dbf7
AC		 1018 /* Block the thread for a while */
1019 prepare_to_wait(&edge_port->wait_chase, &wait,
1020 TASK_UNINTERRUPTIBLE);
1da177e4
LT		 1021 schedule_timeout(timeout);
1022 finish_wait(&edge_port->wait_chase, &wait);
1023
984f6868 1024 dev_dbg(dev, "%s wait\n", __func__);
1da177e4
LT		 1025
1026 if (lastCount == fifo->count) {
03f0dbf7 1027 /* No activity.. count down. */
1da177e4
LT		 1028 loop--;
1029 if (loop == 0) {
984f6868 1030 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1da177e4
LT		 1031 return;
1032 }
1033 } else {
03f0dbf7 1034 /* Reset timeout value back to seconds */
1da177e4
LT		 1035 loop = 30;
1036 }
1037 }
1038}
1039
1040
1041/*****************************************************************************
1042 * edge_close
1043 * this function is called by the tty driver when a port is closed
1044 *****************************************************************************/
335f8514 1045static void edge_close(struct usb_serial_port *port)
1da177e4
LT		 1046{
1047 struct edgeport_serial *edge_serial;
1048 struct edgeport_port *edge_port;
1049 int status;
1050
1da177e4
LT		 1051 edge_serial = usb_get_serial_data(port->serial);
1052 edge_port = usb_get_serial_port_data(port);
03f0dbf7 1053 if (edge_serial == NULL || edge_port == NULL)
1da177e4 1054 return;
03f0dbf7
AC		 1055
1056 /* block until tx is empty */
1da177e4
LT		 1057 block_until_tx_empty(edge_port);
1058
cb8eaa8b 1059 edge_port->closePending = true;
1da177e4 1060
232dce89
GB		 1061 if (!edge_serial->is_epic ||
1062 edge_serial->epic_descriptor.Supports.IOSPChase) {
6e8cf775 1063 /* flush and chase */
cb8eaa8b 1064 edge_port->chaseResponsePending = true;
6e8cf775 1065
984f6868 1066 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
03f0dbf7
AC		 1067 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1068 if (status == 0)
1069 /* block until chase finished */
6e8cf775 1070 block_until_chase_response(edge_port);
03f0dbf7 1071 else
cb8eaa8b 1072 edge_port->chaseResponsePending = false;
1da177e4
LT		 1073 }
1074
232dce89
GB		 1075 if (!edge_serial->is_epic ||
1076 edge_serial->epic_descriptor.Supports.IOSPClose) {
6e8cf775 1077 /* close the port */
984f6868 1078 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
03f0dbf7 1079 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
6e8cf775 1080 }
1da177e4 1081
03f0dbf7 1082 /* port->close = true; */
cb8eaa8b
RK		 1083 edge_port->closePending = false;
1084 edge_port->open = false;
1085 edge_port->openPending = false;
1da177e4 1086
9a25f44f 1087 usb_kill_urb(edge_port->write_urb);
1da177e4
LT		 1088
1089 if (edge_port->write_urb) {
03f0dbf7
AC		 1090 /* if this urb had a transfer buffer already
1091 (old transfer) free it */
1bc3c9e1
JJ		 1092 kfree(edge_port->write_urb->transfer_buffer);
1093 usb_free_urb(edge_port->write_urb);
1da177e4
LT		 1094 edge_port->write_urb = NULL;
1095 }
1bc3c9e1
JJ		 1096 kfree(edge_port->txfifo.fifo);
1097 edge_port->txfifo.fifo = NULL;
03f0dbf7 1098}
1da177e4
LT		 1099
1100/*****************************************************************************
1101 * SerialWrite
03f0dbf7
AC		 1102 * this function is called by the tty driver when data should be written
1103 * to the port.
1104 * If successful, we return the number of bytes written, otherwise we
1105 * return a negative error number.
1da177e4 1106 *****************************************************************************/
95da310e
AC		 1107static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1108 const unsigned char *data, int count)
1da177e4
LT		 1109{
1110 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1111 struct TxFifo *fifo;
1112 int copySize;
1113 int bytesleft;
1114 int firsthalf;
1115 int secondhalf;
1116 unsigned long flags;
1117
1da177e4
LT		 1118 if (edge_port == NULL)
1119 return -ENODEV;
1120
03f0dbf7 1121 /* get a pointer to the Tx fifo */
1da177e4
LT		 1122 fifo = &edge_port->txfifo;
1123
1124 spin_lock_irqsave(&edge_port->ep_lock, flags);
1125
03f0dbf7
AC		 1126 /* calculate number of bytes to put in fifo */
1127 copySize = min((unsigned int)count,
1128 (edge_port->txCredits - fifo->count));
1da177e4 1129
1143832e
GKH		 1130 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1131 __func__, count, edge_port->txCredits - fifo->count, copySize);
1da177e4 1132
03f0dbf7
AC		 1133 /* catch writes of 0 bytes which the tty driver likes to give us,
1134 and when txCredits is empty */
1da177e4 1135 if (copySize == 0) {
984f6868 1136 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1da177e4
LT		 1137 goto finish_write;
1138 }
1139
03f0dbf7
AC		 1140 /* queue the data
1141 * since we can never overflow the buffer we do not have to check for a
1142 * full condition
1143 *
1144 * the copy is done is two parts -- first fill to the end of the buffer
1145 * then copy the reset from the start of the buffer
1146 */
1da177e4 1147 bytesleft = fifo->size - fifo->head;
03f0dbf7 1148 firsthalf = min(bytesleft, copySize);
984f6868
GKH		 1149 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1150 firsthalf, bytesleft);
1da177e4
LT		 1151
1152 /* now copy our data */
1153 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
59d33f2f 1154 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1da177e4 1155
03f0dbf7 1156 /* update the index and size */
1da177e4
LT		 1157 fifo->head += firsthalf;
1158 fifo->count += firsthalf;
1159
03f0dbf7
AC		 1160 /* wrap the index */
1161 if (fifo->head == fifo->size)
1da177e4 1162 fifo->head = 0;
1da177e4
LT		 1163
1164 secondhalf = copySize-firsthalf;
1165
1166 if (secondhalf) {
984f6868 1167 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1da177e4 1168 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
59d33f2f 1169 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
03f0dbf7 1170 /* update the index and size */
1da177e4
LT		 1171 fifo->count += secondhalf;
1172 fifo->head += secondhalf;
03f0dbf7
AC		 1173 /* No need to check for wrap since we can not get to end of
1174 * the fifo in this part
1175 */
1da177e4
LT		 1176 }
1177
1178finish_write:
1179 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1180
03f0dbf7
AC		 1181 send_more_port_data((struct edgeport_serial *)
1182 usb_get_serial_data(port->serial), edge_port);
1da177e4 1183
984f6868
GKH		 1184 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1185 __func__, copySize, edge_port->txCredits, fifo->count);
1da177e4 1186
03f0dbf7 1187 return copySize;
1da177e4
LT		 1188}
1189
1190
1191/************************************************************************
1192 *
1193 * send_more_port_data()
1194 *
1195 * This routine attempts to write additional UART transmit data
1196 * to a port over the USB bulk pipe. It is called (1) when new
1197 * data has been written to a port's TxBuffer from higher layers
1198 * (2) when the peripheral sends us additional TxCredits indicating
1199 * that it can accept more Tx data for a given port; and (3) when
1200 * a bulk write completes successfully and we want to see if we
1201 * can transmit more.
1202 *
1203 ************************************************************************/
03f0dbf7
AC		 1204static void send_more_port_data(struct edgeport_serial *edge_serial,
1205 struct edgeport_port *edge_port)
1da177e4
LT		 1206{
1207 struct TxFifo *fifo = &edge_port->txfifo;
984f6868 1208 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 1209 struct urb *urb;
1210 unsigned char *buffer;
1211 int status;
1212 int count;
1213 int bytesleft;
1214 int firsthalf;
1215 int secondhalf;
1216 unsigned long flags;
1217
1da177e4
LT		 1218 spin_lock_irqsave(&edge_port->ep_lock, flags);
1219
1220 if (edge_port->write_in_progress ||
1221 !edge_port->open ||
1222 (fifo->count == 0)) {
1143832e
GKH		 1223 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1224 __func__, fifo->count, edge_port->write_in_progress);
1da177e4
LT		 1225 goto exit_send;
1226 }
1227
03f0dbf7
AC		 1228 /* since the amount of data in the fifo will always fit into the
1229 * edgeport buffer we do not need to check the write length
1230 *
1231 * Do we have enough credits for this port to make it worthwhile
1232 * to bother queueing a write. If it's too small, say a few bytes,
1233 * it's better to wait for more credits so we can do a larger write.
1234 */
1235 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1143832e
GKH		 1236 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1237 __func__, fifo->count, edge_port->txCredits);
1da177e4
LT		 1238 goto exit_send;
1239 }
1240
03f0dbf7 1241 /* lock this write */
cb8eaa8b 1242 edge_port->write_in_progress = true;
1da177e4 1243
03f0dbf7 1244 /* get a pointer to the write_urb */
1da177e4
LT		 1245 urb = edge_port->write_urb;
1246
1bc3c9e1
JJ		 1247 /* make sure transfer buffer is freed */
1248 kfree(urb->transfer_buffer);
1249 urb->transfer_buffer = NULL;
1da177e4 1250
03f0dbf7
AC		 1251 /* build the data header for the buffer and port that we are about
1252 to send out */
1da177e4 1253 count = fifo->count;
03f0dbf7 1254 buffer = kmalloc(count+2, GFP_ATOMIC);
10c642d0 1255 if (!buffer) {
cb8eaa8b 1256 edge_port->write_in_progress = false;
1da177e4
LT		 1257 goto exit_send;
1258 }
1143832e
GKH		 1259 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1260 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1da177e4
LT		 1261
1262 /* now copy our data */
1263 bytesleft = fifo->size - fifo->tail;
03f0dbf7 1264 firsthalf = min(bytesleft, count);
1da177e4
LT		 1265 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1266 fifo->tail += firsthalf;
1267 fifo->count -= firsthalf;
03f0dbf7 1268 if (fifo->tail == fifo->size)
1da177e4 1269 fifo->tail = 0;
1da177e4
LT		 1270
1271 secondhalf = count-firsthalf;
1272 if (secondhalf) {
03f0dbf7
AC		 1273 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1274 secondhalf);
1da177e4
LT		 1275 fifo->tail += secondhalf;
1276 fifo->count -= secondhalf;
1277 }
1278
1279 if (count)
59d33f2f 1280 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1da177e4
LT		 1281
1282 /* fill up the urb with all of our data and submit it */
03f0dbf7
AC		 1283 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1284 usb_sndbulkpipe(edge_serial->serial->dev,
1285 edge_serial->bulk_out_endpoint),
1286 buffer, count+2,
1287 edge_bulk_out_data_callback, edge_port);
1da177e4
LT		 1288
1289 /* decrement the number of credits we have by the number we just sent */
1290 edge_port->txCredits -= count;
d36a7712 1291 edge_port->port->icount.tx += count;
1da177e4 1292
1da177e4
LT		 1293 status = usb_submit_urb(urb, GFP_ATOMIC);
1294 if (status) {
1295 /* something went wrong */
22a416c4 1296 dev_err_console(edge_port->port,
03f0dbf7
AC		 1297 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1298 __func__, status);
cb8eaa8b 1299 edge_port->write_in_progress = false;
1da177e4
LT		 1300
1301 /* revert the credits as something bad happened. */
1302 edge_port->txCredits += count;
d36a7712 1303 edge_port->port->icount.tx -= count;
1da177e4 1304 }
984f6868
GKH		 1305 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1306 __func__, count, edge_port->txCredits, fifo->count);
1da177e4
LT		 1307
1308exit_send:
1309 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1310}
1311
1312
1313/*****************************************************************************
1314 * edge_write_room
03f0dbf7
AC		 1315 * this function is called by the tty driver when it wants to know how
1316 * many bytes of data we can accept for a specific port. If successful,
1317 * we return the amount of room that we have for this port (the txCredits)
1318 * otherwise we return a negative error number.
1da177e4 1319 *****************************************************************************/
95da310e 1320static int edge_write_room(struct tty_struct *tty)
1da177e4 1321{
95da310e 1322 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1323 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1324 int room;
1325 unsigned long flags;
1326
1da177e4 1327 if (edge_port == NULL)
d76f2f44 1328 return 0;
cb8eaa8b 1329 if (edge_port->closePending)
d76f2f44 1330 return 0;
1da177e4 1331
1da177e4 1332 if (!edge_port->open) {
984f6868 1333 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
d76f2f44 1334 return 0;
1da177e4
LT		 1335 }
1336
03f0dbf7 1337 /* total of both buffers is still txCredit */
1da177e4
LT		 1338 spin_lock_irqsave(&edge_port->ep_lock, flags);
1339 room = edge_port->txCredits - edge_port->txfifo.count;
1340 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1341
984f6868 1342 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1da177e4
LT		 1343 return room;
1344}
1345
1346
1347/*****************************************************************************
1348 * edge_chars_in_buffer
03f0dbf7
AC		 1349 * this function is called by the tty driver when it wants to know how
1350 * many bytes of data we currently have outstanding in the port (data that
1351 * has been written, but hasn't made it out the port yet)
1352 * If successful, we return the number of bytes left to be written in the
1353 * system,
1da177e4
LT		 1354 * Otherwise we return a negative error number.
1355 *****************************************************************************/
95da310e 1356static int edge_chars_in_buffer(struct tty_struct *tty)
1da177e4 1357{
95da310e 1358 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1359 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1360 int num_chars;
1361 unsigned long flags;
1362
1da177e4 1363 if (edge_port == NULL)
d76f2f44 1364 return 0;
cb8eaa8b 1365 if (edge_port->closePending)
d76f2f44 1366 return 0;
1da177e4
LT		 1367
1368 if (!edge_port->open) {
984f6868 1369 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
d76f2f44 1370 return 0;
1da177e4
LT		 1371 }
1372
1373 spin_lock_irqsave(&edge_port->ep_lock, flags);
03f0dbf7
AC		 1374 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1375 edge_port->txfifo.count;
1da177e4
LT		 1376 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1377 if (num_chars) {
1143832e 1378 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars);
1da177e4
LT		 1379 }
1380
1381 return num_chars;
1382}
1383
1384
1385/*****************************************************************************
1386 * SerialThrottle
1387 * this function is called by the tty driver when it wants to stop the data
1388 * being read from the port.
1389 *****************************************************************************/
95da310e 1390static void edge_throttle(struct tty_struct *tty)
1da177e4 1391{
95da310e 1392 struct usb_serial_port *port = tty->driver_data;
1da177e4 1393 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1394 int status;
1395
1da177e4
LT		 1396 if (edge_port == NULL)
1397 return;
1398
1399 if (!edge_port->open) {
984f6868 1400 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1da177e4
LT		 1401 return;
1402 }
1403
1da177e4
LT		 1404 /* if we are implementing XON/XOFF, send the stop character */
1405 if (I_IXOFF(tty)) {
1406 unsigned char stop_char = STOP_CHAR(tty);
03f0dbf7
AC		 1407 status = edge_write(tty, port, &stop_char, 1);
1408 if (status <= 0)
1da177e4 1409 return;
1da177e4
LT		 1410 }
1411
1412 /* if we are implementing RTS/CTS, toggle that line */
9db276f8 1413 if (C_CRTSCTS(tty)) {
1da177e4 1414 edge_port->shadowMCR &= ~MCR_RTS;
03f0dbf7
AC		 1415 status = send_cmd_write_uart_register(edge_port, MCR,
1416 edge_port->shadowMCR);
1417 if (status != 0)
1da177e4 1418 return;
1da177e4 1419 }
1da177e4
LT		 1420}
1421
1422
1423/*****************************************************************************
1424 * edge_unthrottle
03f0dbf7
AC		 1425 * this function is called by the tty driver when it wants to resume the
1426 * data being read from the port (called after SerialThrottle is called)
1da177e4 1427 *****************************************************************************/
95da310e 1428static void edge_unthrottle(struct tty_struct *tty)
1da177e4 1429{
95da310e 1430 struct usb_serial_port *port = tty->driver_data;
1da177e4 1431 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1432 int status;
1433
1da177e4
LT		 1434 if (edge_port == NULL)
1435 return;
1436
1437 if (!edge_port->open) {
984f6868 1438 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1da177e4
LT		 1439 return;
1440 }
1441
1da177e4
LT		 1442 /* if we are implementing XON/XOFF, send the start character */
1443 if (I_IXOFF(tty)) {
1444 unsigned char start_char = START_CHAR(tty);
95da310e
AC		 1445 status = edge_write(tty, port, &start_char, 1);
1446 if (status <= 0)
1da177e4 1447 return;
1da177e4 1448 }
1da177e4 1449 /* if we are implementing RTS/CTS, toggle that line */
9db276f8 1450 if (C_CRTSCTS(tty)) {
1da177e4 1451 edge_port->shadowMCR |= MCR_RTS;
03f0dbf7
AC		 1452 send_cmd_write_uart_register(edge_port, MCR,
1453 edge_port->shadowMCR);
1da177e4 1454 }
1da177e4
LT		 1455}
1456
1457
1458/*****************************************************************************
1459 * SerialSetTermios
03f0dbf7
AC		 1460 * this function is called by the tty driver when it wants to change
1461 * the termios structure
1da177e4 1462 *****************************************************************************/
95da310e
AC		 1463static void edge_set_termios(struct tty_struct *tty,
1464 struct usb_serial_port *port, struct ktermios *old_termios)
1da177e4
LT		 1465{
1466 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4
LT		 1467 unsigned int cflag;
1468
adc8d746 1469 cflag = tty->termios.c_cflag;
d9a80746 1470 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag);
984f6868 1471 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag);
1da177e4
LT		 1472
1473 if (edge_port == NULL)
1474 return;
1475
1476 if (!edge_port->open) {
984f6868 1477 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1da177e4
LT		 1478 return;
1479 }
1480
1481 /* change the port settings to the new ones specified */
95da310e 1482 change_port_settings(tty, edge_port, old_termios);
1da177e4
LT		 1483}
1484
1485
1486/*****************************************************************************
1487 * get_lsr_info - get line status register info
1488 *
1489 * Purpose: Let user call ioctl() to get info when the UART physically
1490 * is emptied. On bus types like RS485, the transmitter must
1491 * release the bus after transmitting. This must be done when
1492 * the transmit shift register is empty, not be done when the
1493 * transmit holding register is empty. This functionality
03f0dbf7 1494 * allows an RS485 driver to be written in user space.
1da177e4 1495 *****************************************************************************/
03f0dbf7
AC		 1496static int get_lsr_info(struct edgeport_port *edge_port,
1497 unsigned int __user *value)
1da177e4
LT		 1498{
1499 unsigned int result = 0;
1500 unsigned long flags;
1501
1502 spin_lock_irqsave(&edge_port->ep_lock, flags);
1503 if (edge_port->maxTxCredits == edge_port->txCredits &&
1504 edge_port->txfifo.count == 0) {
984f6868 1505 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1da177e4
LT		 1506 result = TIOCSER_TEMT;
1507 }
1508 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1509
1510 if (copy_to_user(value, &result, sizeof(int)))
1511 return -EFAULT;
1512 return 0;
1513}
1514
20b9d177 1515static int edge_tiocmset(struct tty_struct *tty,
03f0dbf7 1516 unsigned int set, unsigned int clear)
1da177e4 1517{
95da310e 1518 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1519 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1520 unsigned int mcr;
1521
1da177e4
LT		 1522 mcr = edge_port->shadowMCR;
1523 if (set & TIOCM_RTS)
1524 mcr |= MCR_RTS;
1525 if (set & TIOCM_DTR)
1526 mcr |= MCR_DTR;
1527 if (set & TIOCM_LOOP)
1528 mcr |= MCR_LOOPBACK;
1529
1530 if (clear & TIOCM_RTS)
1531 mcr &= ~MCR_RTS;
1532 if (clear & TIOCM_DTR)
1533 mcr &= ~MCR_DTR;
1534 if (clear & TIOCM_LOOP)
1535 mcr &= ~MCR_LOOPBACK;
1536
1537 edge_port->shadowMCR = mcr;
1538
1539 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1540
1541 return 0;
1542}
1543
60b33c13 1544static int edge_tiocmget(struct tty_struct *tty)
1da177e4 1545{
95da310e 1546 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1547 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1548 unsigned int result = 0;
1549 unsigned int msr;
1550 unsigned int mcr;
1551
1da177e4
LT		 1552 msr = edge_port->shadowMSR;
1553 mcr = edge_port->shadowMCR;
1554 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1555 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1556 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1557 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1558 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1559 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1560
1da177e4
LT		 1561 return result;
1562}
1563
03f0dbf7
AC		 1564static int get_serial_info(struct edgeport_port *edge_port,
1565 struct serial_struct __user *retinfo)
1da177e4
LT		 1566{
1567 struct serial_struct tmp;
1568
1da177e4
LT		 1569 memset(&tmp, 0, sizeof(tmp));
1570
1571 tmp.type = PORT_16550A;
e5b1e206 1572 tmp.line = edge_port->port->minor;
1143832e 1573 tmp.port = edge_port->port->port_number;
1da177e4 1574 tmp.irq = 0;
1da177e4
LT		 1575 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1576 tmp.baud_base = 9600;
1577 tmp.close_delay = 5*HZ;
1578 tmp.closing_wait = 30*HZ;
1da177e4
LT		 1579
1580 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1581 return -EFAULT;
1582 return 0;
1583}
1584
1585
1da177e4
LT		 1586/*****************************************************************************
1587 * SerialIoctl
1588 * this function handles any ioctl calls to the driver
1589 *****************************************************************************/
00a0d0d6 1590static int edge_ioctl(struct tty_struct *tty,
95da310e 1591 unsigned int cmd, unsigned long arg)
1da177e4 1592{
95da310e 1593 struct usb_serial_port *port = tty->driver_data;
1da177e4
LT		 1594 DEFINE_WAIT(wait);
1595 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1da177e4 1596
1da177e4 1597 switch (cmd) {
03f0dbf7 1598 case TIOCSERGETLSR:
1143832e 1599 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
03f0dbf7
AC		 1600 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1601
1602 case TIOCGSERIAL:
1143832e 1603 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
03f0dbf7 1604 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1da177e4 1605 }
1da177e4
LT		 1606 return -ENOIOCTLCMD;
1607}
1608
1609
1610/*****************************************************************************
1611 * SerialBreak
1612 * this function sends a break to the port
1613 *****************************************************************************/
03f0dbf7 1614static void edge_break(struct tty_struct *tty, int break_state)
1da177e4 1615{
95da310e 1616 struct usb_serial_port *port = tty->driver_data;
1da177e4 1617 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
6e8cf775 1618 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1da177e4
LT		 1619 int status;
1620
232dce89
GB		 1621 if (!edge_serial->is_epic ||
1622 edge_serial->epic_descriptor.Supports.IOSPChase) {
6e8cf775 1623 /* flush and chase */
cb8eaa8b 1624 edge_port->chaseResponsePending = true;
6e8cf775 1625
984f6868 1626 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
03f0dbf7 1627 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
6e8cf775 1628 if (status == 0) {
03f0dbf7 1629 /* block until chase finished */
6e8cf775
GKH		 1630 block_until_chase_response(edge_port);
1631 } else {
cb8eaa8b 1632 edge_port->chaseResponsePending = false;
6e8cf775 1633 }
1da177e4
LT		 1634 }
1635
232dce89
GB		 1636 if (!edge_serial->is_epic ||
1637 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) {
6e8cf775 1638 if (break_state == -1) {
984f6868 1639 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
03f0dbf7
AC		 1640 status = send_iosp_ext_cmd(edge_port,
1641 IOSP_CMD_SET_BREAK, 0);
6e8cf775 1642 } else {
984f6868 1643 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
03f0dbf7
AC		 1644 status = send_iosp_ext_cmd(edge_port,
1645 IOSP_CMD_CLEAR_BREAK, 0);
6e8cf775 1646 }
03f0dbf7 1647 if (status)
984f6868 1648 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
03f0dbf7 1649 __func__);
1da177e4 1650 }
1da177e4
LT		 1651}
1652
1653
1654/*****************************************************************************
1655 * process_rcvd_data
1656 * this function handles the data received on the bulk in pipe.
1657 *****************************************************************************/
03f0dbf7
AC		 1658static void process_rcvd_data(struct edgeport_serial *edge_serial,
1659 unsigned char *buffer, __u16 bufferLength)
1da177e4 1660{
984f6868 1661 struct device *dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 1662 struct usb_serial_port *port;
1663 struct edgeport_port *edge_port;
1da177e4
LT		 1664 __u16 lastBufferLength;
1665 __u16 rxLen;
1666
1da177e4
LT		 1667 lastBufferLength = bufferLength + 1;
1668
1669 while (bufferLength > 0) {
1670 /* failsafe incase we get a message that we don't understand */
1671 if (lastBufferLength == bufferLength) {
984f6868 1672 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1da177e4
LT		 1673 break;
1674 }
1675 lastBufferLength = bufferLength;
1676
1677 switch (edge_serial->rxState) {
03f0dbf7
AC		 1678 case EXPECT_HDR1:
1679 edge_serial->rxHeader1 = *buffer;
1680 ++buffer;
1681 --bufferLength;
1da177e4 1682
03f0dbf7
AC		 1683 if (bufferLength == 0) {
1684 edge_serial->rxState = EXPECT_HDR2;
1685 break;
1686 }
1687 /* otherwise, drop on through */
1688 case EXPECT_HDR2:
1689 edge_serial->rxHeader2 = *buffer;
1690 ++buffer;
1691 --bufferLength;
1692
984f6868
GKH		 1693 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1694 edge_serial->rxHeader1, edge_serial->rxHeader2);
03f0dbf7
AC		 1695 /* Process depending on whether this header is
1696 * data or status */
1697
1698 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1699 /* Decode this status header and go to
1700 * EXPECT_HDR1 (if we can process the status
1701 * with only 2 bytes), or go to EXPECT_HDR3 to
1702 * get the third byte. */
1703 edge_serial->rxPort =
1704 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1705 edge_serial->rxStatusCode =
1706 IOSP_GET_STATUS_CODE(
1707 edge_serial->rxHeader1);
1708
1709 if (!IOSP_STATUS_IS_2BYTE(
1710 edge_serial->rxStatusCode)) {
1711 /* This status needs additional bytes.
1712 * Save what we have and then wait for
1713 * more data.
1714 */
1715 edge_serial->rxStatusParam
1716 = edge_serial->rxHeader2;
1717 edge_serial->rxState = EXPECT_HDR3;
1da177e4
LT		 1718 break;
1719 }
03f0dbf7
AC		 1720 /* We have all the header bytes, process the
1721 status now */
1722 process_rcvd_status(edge_serial,
1723 edge_serial->rxHeader2, 0);
1724 edge_serial->rxState = EXPECT_HDR1;
1725 break;
1726 } else {
1727 edge_serial->rxPort =
1728 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1729 edge_serial->rxBytesRemaining =
1730 IOSP_GET_HDR_DATA_LEN(
1731 edge_serial->rxHeader1,
1732 edge_serial->rxHeader2);
984f6868
GKH		 1733 dev_dbg(dev, "%s - Data for Port %u Len %u\n",
1734 __func__,
1735 edge_serial->rxPort,
1736 edge_serial->rxBytesRemaining);
03f0dbf7
AC		 1737
1738 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1739 * ASSERT(DevExt->RxBytesRemaining <
1740 * IOSP_MAX_DATA_LENGTH);
1741 */
1da177e4 1742
03f0dbf7
AC		 1743 if (bufferLength == 0) {
1744 edge_serial->rxState = EXPECT_DATA;
1da177e4 1745 break;
1da177e4 1746 }
03f0dbf7
AC		 1747 /* Else, drop through */
1748 }
1749 case EXPECT_DATA: /* Expect data */
1750 if (bufferLength < edge_serial->rxBytesRemaining) {
1751 rxLen = bufferLength;
1752 /* Expect data to start next buffer */
1753 edge_serial->rxState = EXPECT_DATA;
1754 } else {
1755 /* BufLen >= RxBytesRemaining */
1756 rxLen = edge_serial->rxBytesRemaining;
1757 /* Start another header next time */
1758 edge_serial->rxState = EXPECT_HDR1;
1759 }
1da177e4 1760
03f0dbf7
AC		 1761 bufferLength -= rxLen;
1762 edge_serial->rxBytesRemaining -= rxLen;
1da177e4 1763
03f0dbf7
AC		 1764 /* spit this data back into the tty driver if this
1765 port is open */
1766 if (rxLen) {
1767 port = edge_serial->serial->port[
1768 edge_serial->rxPort];
1769 edge_port = usb_get_serial_port_data(port);
1770 if (edge_port->open) {
2e124b4a
JS		 1771 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1772 __func__, rxLen,
1773 edge_serial->rxPort);
1774 edge_tty_recv(edge_port->port, buffer,
1775 rxLen);
d36a7712 1776 edge_port->port->icount.rx += rxLen;
1da177e4 1777 }
03f0dbf7
AC		 1778 buffer += rxLen;
1779 }
1780 break;
1da177e4 1781
03f0dbf7
AC		 1782 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1783 edge_serial->rxHeader3 = *buffer;
1784 ++buffer;
1785 --bufferLength;
1786
1787 /* We have all the header bytes, process the
1788 status now */
1789 process_rcvd_status(edge_serial,
1790 edge_serial->rxStatusParam,
1791 edge_serial->rxHeader3);
1792 edge_serial->rxState = EXPECT_HDR1;
1793 break;
1da177e4
LT		 1794 }
1795 }
1796}
1797
1798
1799/*****************************************************************************
1800 * process_rcvd_status
03f0dbf7
AC		 1801 * this function handles the any status messages received on the
1802 * bulk in pipe.
1da177e4 1803 *****************************************************************************/
03f0dbf7
AC		 1804static void process_rcvd_status(struct edgeport_serial *edge_serial,
1805 __u8 byte2, __u8 byte3)
1da177e4
LT		 1806{
1807 struct usb_serial_port *port;
1808 struct edgeport_port *edge_port;
4a90f09b 1809 struct tty_struct *tty;
984f6868 1810 struct device *dev;
1da177e4
LT		 1811 __u8 code = edge_serial->rxStatusCode;
1812
1813 /* switch the port pointer to the one being currently talked about */
1814 port = edge_serial->serial->port[edge_serial->rxPort];
1815 edge_port = usb_get_serial_port_data(port);
1816 if (edge_port == NULL) {
03f0dbf7
AC		 1817 dev_err(&edge_serial->serial->dev->dev,
1818 "%s - edge_port == NULL for port %d\n",
1819 __func__, edge_serial->rxPort);
1da177e4
LT		 1820 return;
1821 }
984f6868 1822 dev = &port->dev;
1da177e4
LT		 1823
1824 if (code == IOSP_EXT_STATUS) {
1825 switch (byte2) {
03f0dbf7
AC		 1826 case IOSP_EXT_STATUS_CHASE_RSP:
1827 /* we want to do EXT status regardless of port
1828 * open/closed */
984f6868
GKH		 1829 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1830 __func__, edge_serial->rxPort, byte3);
03f0dbf7
AC		 1831 /* Currently, the only EXT_STATUS is Chase, so process
1832 * here instead of one more call to one more subroutine
1833 * If/when more EXT_STATUS, there'll be more work to do
1834 * Also, we currently clear flag and close the port
1835 * regardless of content of above's Byte3.
1836 * We could choose to do something else when Byte3 says
1837 * Timeout on Chase from Edgeport, like wait longer in
1838 * block_until_chase_response, but for now we don't.
1839 */
1840 edge_port->chaseResponsePending = false;
1841 wake_up(&edge_port->wait_chase);
1842 return;
1da177e4 1843
03f0dbf7 1844 case IOSP_EXT_STATUS_RX_CHECK_RSP:
984f6868
GKH		 1845 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1846 __func__, edge_serial->rxPort, byte3);
03f0dbf7
AC		 1847 /* Port->RxCheckRsp = true; */
1848 return;
1da177e4
LT		 1849 }
1850 }
1851
1852 if (code == IOSP_STATUS_OPEN_RSP) {
1853 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1854 edge_port->maxTxCredits = edge_port->txCredits;
984f6868
GKH		 1855 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1856 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
03f0dbf7 1857 handle_new_msr(edge_port, byte2);
1da177e4 1858
03f0dbf7
AC		 1859 /* send the current line settings to the port so we are
1860 in sync with any further termios calls */
4a90f09b
AC		 1861 tty = tty_port_tty_get(&edge_port->port->port);
1862 if (tty) {
1863 change_port_settings(tty,
adc8d746 1864 edge_port, &tty->termios);
4a90f09b
AC		 1865 tty_kref_put(tty);
1866 }
1da177e4
LT		 1867
1868 /* we have completed the open */
cb8eaa8b
RK		 1869 edge_port->openPending = false;
1870 edge_port->open = true;
1da177e4
LT		 1871 wake_up(&edge_port->wait_open);
1872 return;
1873 }
1874
03f0dbf7
AC		 1875 /* If port is closed, silently discard all rcvd status. We can
1876 * have cases where buffered status is received AFTER the close
1877 * port command is sent to the Edgeport.
1878 */
1879 if (!edge_port->open || edge_port->closePending)
1da177e4 1880 return;
1da177e4
LT		 1881
1882 switch (code) {
03f0dbf7
AC		 1883 /* Not currently sent by Edgeport */
1884 case IOSP_STATUS_LSR:
984f6868
GKH		 1885 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1886 __func__, edge_serial->rxPort, byte2);
03f0dbf7
AC		 1887 handle_new_lsr(edge_port, false, byte2, 0);
1888 break;
1da177e4 1889
03f0dbf7 1890 case IOSP_STATUS_LSR_DATA:
984f6868
GKH		 1891 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1892 __func__, edge_serial->rxPort, byte2, byte3);
03f0dbf7
AC		 1893 /* byte2 is LSR Register */
1894 /* byte3 is broken data byte */
1895 handle_new_lsr(edge_port, true, byte2, byte3);
1896 break;
1897 /*
1898 * case IOSP_EXT_4_STATUS:
984f6868 1899 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
03f0dbf7
AC		 1900 * __func__, edge_serial->rxPort, byte2, byte3);
1901 * break;
1902 */
1903 case IOSP_STATUS_MSR:
984f6868
GKH		 1904 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1905 __func__, edge_serial->rxPort, byte2);
03f0dbf7
AC		 1906 /*
1907 * Process this new modem status and generate appropriate
1908 * events, etc, based on the new status. This routine
1909 * also saves the MSR in Port->ShadowMsr.
1910 */
1911 handle_new_msr(edge_port, byte2);
1912 break;
1da177e4 1913
03f0dbf7 1914 default:
984f6868 1915 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
03f0dbf7 1916 break;
1da177e4 1917 }
1da177e4
LT		 1918}
1919
1920
1921/*****************************************************************************
1922 * edge_tty_recv
1923 * this function passes data on to the tty flip buffer
1924 *****************************************************************************/
2e124b4a
JS		 1925static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1926 int length)
1da177e4
LT		 1927{
1928 int cnt;
1929
05c7cd39 1930 cnt = tty_insert_flip_string(&port->port, data, length);
a108bfcb 1931 if (cnt < length) {
05c7cd39 1932 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
a108bfcb
AC		 1933 __func__, length - cnt);
1934 }
1935 data += cnt;
1936 length -= cnt;
1da177e4 1937
2e124b4a 1938 tty_flip_buffer_push(&port->port);
1da177e4
LT		 1939}
1940
1941
1942/*****************************************************************************
1943 * handle_new_msr
1944 * this function handles any change to the msr register for a port.
1945 *****************************************************************************/
1946static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
1947{
1948 struct async_icount *icount;
1949
03f0dbf7
AC		 1950 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1951 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
d36a7712 1952 icount = &edge_port->port->icount;
1da177e4
LT		 1953
1954 /* update input line counters */
03f0dbf7 1955 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
1da177e4 1956 icount->cts++;
03f0dbf7 1957 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
1da177e4 1958 icount->dsr++;
03f0dbf7 1959 if (newMsr & EDGEPORT_MSR_DELTA_CD)
1da177e4 1960 icount->dcd++;
03f0dbf7 1961 if (newMsr & EDGEPORT_MSR_DELTA_RI)
1da177e4 1962 icount->rng++;
8b8070d8 1963 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1da177e4
LT		 1964 }
1965
1966 /* Save the new modem status */
1967 edge_port->shadowMSR = newMsr & 0xf0;
1da177e4
LT		 1968}
1969
1970
1971/*****************************************************************************
1972 * handle_new_lsr
1973 * this function handles any change to the lsr register for a port.
1974 *****************************************************************************/
03f0dbf7
AC		 1975static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
1976 __u8 lsr, __u8 data)
1da177e4 1977{
03f0dbf7
AC		 1978 __u8 newLsr = (__u8) (lsr & (__u8)
1979 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1980 struct async_icount *icount;
1da177e4 1981
1da177e4
LT		 1982 edge_port->shadowLSR = lsr;
1983
1984 if (newLsr & LSR_BREAK) {
03f0dbf7
AC		 1985 /*
1986 * Parity and Framing errors only count if they
1987 * occur exclusive of a break being
1988 * received.
1989 */
1da177e4
LT		 1990 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1991 }
1992
1993 /* Place LSR data byte into Rx buffer */
2e124b4a
JS		 1994 if (lsrData)
1995 edge_tty_recv(edge_port->port, &data, 1);
1996
1da177e4 1997 /* update input line counters */
d36a7712 1998 icount = &edge_port->port->icount;
03f0dbf7 1999 if (newLsr & LSR_BREAK)
1da177e4 2000 icount->brk++;
03f0dbf7 2001 if (newLsr & LSR_OVER_ERR)
1da177e4 2002 icount->overrun++;
03f0dbf7 2003 if (newLsr & LSR_PAR_ERR)
1da177e4 2004 icount->parity++;
03f0dbf7 2005 if (newLsr & LSR_FRM_ERR)
1da177e4 2006 icount->frame++;
1da177e4
LT		 2007}
2008
2009
2010/****************************************************************************
2011 * sram_write
03f0dbf7 2012 * writes a number of bytes to the Edgeport device's sram starting at the
1da177e4
LT		 2013 * given address.
2014 * If successful returns the number of bytes written, otherwise it returns
2015 * a negative error number of the problem.
2016 ****************************************************************************/
03f0dbf7
AC		 2017static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2018 __u16 length, const __u8 *data)
1da177e4
LT		 2019{
2020 int result;
2021 __u16 current_length;
2022 unsigned char *transfer_buffer;
2023
984f6868 2024 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
1da177e4 2025
03f0dbf7 2026 transfer_buffer = kmalloc(64, GFP_KERNEL);
10c642d0 2027 if (!transfer_buffer)
1da177e4 2028 return -ENOMEM;
1da177e4
LT		 2029
2030 /* need to split these writes up into 64 byte chunks */
2031 result = 0;
2032 while (length > 0) {
03f0dbf7 2033 if (length > 64)
1da177e4 2034 current_length = 64;
03f0dbf7 2035 else
1da177e4 2036 current_length = length;
03f0dbf7 2037
984f6868 2038/* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
03f0dbf7
AC		 2039 memcpy(transfer_buffer, data, current_length);
2040 result = usb_control_msg(serial->dev,
2041 usb_sndctrlpipe(serial->dev, 0),
2042 USB_REQUEST_ION_WRITE_RAM,
2043 0x40, addr, extAddr, transfer_buffer,
2044 current_length, 300);
1da177e4
LT		 2045 if (result < 0)
2046 break;
2047 length -= current_length;
2048 addr += current_length;
2049 data += current_length;
03f0dbf7 2050 }
1da177e4 2051
03f0dbf7 2052 kfree(transfer_buffer);
1da177e4
LT		 2053 return result;
2054}
2055
2056
2057/****************************************************************************
2058 * rom_write
2059 * writes a number of bytes to the Edgeport device's ROM starting at the
2060 * given address.
2061 * If successful returns the number of bytes written, otherwise it returns
2062 * a negative error number of the problem.
2063 ****************************************************************************/
03f0dbf7
AC		 2064static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2065 __u16 length, const __u8 *data)
1da177e4
LT		 2066{
2067 int result;
2068 __u16 current_length;
2069 unsigned char *transfer_buffer;
2070
03f0dbf7 2071 transfer_buffer = kmalloc(64, GFP_KERNEL);
10c642d0 2072 if (!transfer_buffer)
1da177e4 2073 return -ENOMEM;
1da177e4
LT		 2074
2075 /* need to split these writes up into 64 byte chunks */
2076 result = 0;
2077 while (length > 0) {
03f0dbf7 2078 if (length > 64)
1da177e4 2079 current_length = 64;
03f0dbf7 2080 else
1da177e4 2081 current_length = length;
03f0dbf7
AC		 2082 memcpy(transfer_buffer, data, current_length);
2083 result = usb_control_msg(serial->dev,
2084 usb_sndctrlpipe(serial->dev, 0),
2085 USB_REQUEST_ION_WRITE_ROM, 0x40,
2086 addr, extAddr,
2087 transfer_buffer, current_length, 300);
1da177e4
LT		 2088 if (result < 0)
2089 break;
2090 length -= current_length;
2091 addr += current_length;
2092 data += current_length;
03f0dbf7 2093 }
1da177e4 2094
03f0dbf7 2095 kfree(transfer_buffer);
1da177e4
LT		 2096 return result;
2097}
2098
2099
2100/****************************************************************************
2101 * rom_read
2102 * reads a number of bytes from the Edgeport device starting at the given
2103 * address.
3c0e25d8 2104 * Returns zero on success or a negative error number.
1da177e4 2105 ****************************************************************************/
03f0dbf7
AC		 2106static int rom_read(struct usb_serial *serial, __u16 extAddr,
2107 __u16 addr, __u16 length, __u8 *data)
1da177e4
LT		 2108{
2109 int result;
2110 __u16 current_length;
2111 unsigned char *transfer_buffer;
2112
03f0dbf7 2113 transfer_buffer = kmalloc(64, GFP_KERNEL);
10c642d0 2114 if (!transfer_buffer)
1da177e4 2115 return -ENOMEM;
1da177e4
LT		 2116
2117 /* need to split these reads up into 64 byte chunks */
2118 result = 0;
2119 while (length > 0) {
03f0dbf7 2120 if (length > 64)
1da177e4 2121 current_length = 64;
03f0dbf7 2122 else
1da177e4 2123 current_length = length;
03f0dbf7
AC		 2124 result = usb_control_msg(serial->dev,
2125 usb_rcvctrlpipe(serial->dev, 0),
2126 USB_REQUEST_ION_READ_ROM,
2127 0xC0, addr, extAddr, transfer_buffer,
2128 current_length, 300);
3c0e25d8
JH		 2129 if (result < current_length) {
2130 if (result >= 0)
2131 result = -EIO;
1da177e4 2132 break;
3c0e25d8 2133 }
03f0dbf7 2134 memcpy(data, transfer_buffer, current_length);
1da177e4
LT		 2135 length -= current_length;
2136 addr += current_length;
2137 data += current_length;
3c0e25d8
JH		 2138
2139 result = 0;
03f0dbf7 2140 }
1da177e4 2141
03f0dbf7 2142 kfree(transfer_buffer);
1da177e4
LT		 2143 return result;
2144}
2145
2146
2147/****************************************************************************
2148 * send_iosp_ext_cmd
2149 * Is used to send a IOSP message to the Edgeport device
2150 ****************************************************************************/
03f0dbf7
AC		 2151static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2152 __u8 command, __u8 param)
1da177e4
LT		 2153{
2154 unsigned char *buffer;
2155 unsigned char *currentCommand;
2156 int length = 0;
2157 int status = 0;
2158
03f0dbf7 2159 buffer = kmalloc(10, GFP_ATOMIC);
10c642d0 2160 if (!buffer)
1da177e4 2161 return -ENOMEM;
1da177e4
LT		 2162
2163 currentCommand = buffer;
2164
1143832e
GKH		 2165 MAKE_CMD_EXT_CMD(&currentCommand, &length, edge_port->port->port_number,
2166 command, param);
1da177e4 2167
03f0dbf7 2168 status = write_cmd_usb(edge_port, buffer, length);
1da177e4
LT		 2169 if (status) {
2170 /* something bad happened, let's free up the memory */
2171 kfree(buffer);
2172 }
2173
2174 return status;
2175}
2176
2177
2178/*****************************************************************************
2179 * write_cmd_usb
2180 * this function writes the given buffer out to the bulk write endpoint.
2181 *****************************************************************************/
03f0dbf7
AC		 2182static int write_cmd_usb(struct edgeport_port *edge_port,
2183 unsigned char *buffer, int length)
1da177e4 2184{
03f0dbf7
AC		 2185 struct edgeport_serial *edge_serial =
2186 usb_get_serial_data(edge_port->port->serial);
984f6868 2187 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 2188 int status = 0;
2189 struct urb *urb;
1da177e4 2190
59d33f2f 2191 usb_serial_debug_data(dev, __func__, length, buffer);
1da177e4
LT		 2192
2193 /* Allocate our next urb */
03f0dbf7 2194 urb = usb_alloc_urb(0, GFP_ATOMIC);
1da177e4
LT		 2195 if (!urb)
2196 return -ENOMEM;
2197
96c706ed 2198 atomic_inc(&CmdUrbs);
984f6868
GKH		 2199 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2200 __func__, urb, atomic_read(&CmdUrbs));
1da177e4 2201
03f0dbf7
AC		 2202 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2203 usb_sndbulkpipe(edge_serial->serial->dev,
2204 edge_serial->bulk_out_endpoint),
2205 buffer, length, edge_bulk_out_cmd_callback, edge_port);
1da177e4 2206
cb8eaa8b 2207 edge_port->commandPending = true;
1da177e4
LT		 2208 status = usb_submit_urb(urb, GFP_ATOMIC);
2209
2210 if (status) {
2211 /* something went wrong */
984f6868
GKH		 2212 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2213 __func__, status);
1da177e4
LT		 2214 usb_kill_urb(urb);
2215 usb_free_urb(urb);
96c706ed 2216 atomic_dec(&CmdUrbs);
1da177e4
LT		 2217 return status;
2218 }
2219
1da177e4 2220#if 0
03f0dbf7 2221 wait_event(&edge_port->wait_command, !edge_port->commandPending);
1da177e4 2222
cb8eaa8b 2223 if (edge_port->commandPending) {
1da177e4 2224 /* command timed out */
984f6868 2225 dev_dbg(dev, "%s - command timed out\n", __func__);
1da177e4
LT		 2226 status = -EINVAL;
2227 }
2228#endif
2229 return status;
2230}
2231
2232
2233/*****************************************************************************
2234 * send_cmd_write_baud_rate
2235 * this function sends the proper command to change the baud rate of the
2236 * specified port.
2237 *****************************************************************************/
03f0dbf7
AC		 2238static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2239 int baudRate)
1da177e4 2240{
03f0dbf7
AC		 2241 struct edgeport_serial *edge_serial =
2242 usb_get_serial_data(edge_port->port->serial);
984f6868 2243 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 2244 unsigned char *cmdBuffer;
2245 unsigned char *currCmd;
2246 int cmdLen = 0;
2247 int divisor;
2248 int status;
1143832e 2249 u32 number = edge_port->port->port_number;
1da177e4 2250
bc71e479
AK		 2251 if (edge_serial->is_epic &&
2252 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
1143832e
GKH		 2253 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2254 baudRate);
6e8cf775
GKH		 2255 return 0;
2256 }
2257
1143832e 2258 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
1da177e4 2259
984f6868 2260 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
1da177e4 2261 if (status) {
984f6868 2262 dev_err(dev, "%s - bad baud rate\n", __func__);
1da177e4
LT		 2263 return status;
2264 }
2265
03f0dbf7
AC		 2266 /* Alloc memory for the string of commands. */
2267 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
10c642d0 2268 if (!cmdBuffer)
1da177e4 2269 return -ENOMEM;
10c642d0 2270
1da177e4
LT		 2271 currCmd = cmdBuffer;
2272
03f0dbf7
AC		 2273 /* Enable access to divisor latch */
2274 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
1da177e4 2275
03f0dbf7
AC		 2276 /* Write the divisor itself */
2277 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2278 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
1da177e4 2279
03f0dbf7
AC		 2280 /* Restore original value to disable access to divisor latch */
2281 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2282 edge_port->shadowLCR);
1da177e4 2283
03f0dbf7 2284 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
1da177e4
LT		 2285 if (status) {
2286 /* something bad happened, let's free up the memory */
03f0dbf7 2287 kfree(cmdBuffer);
1da177e4
LT		 2288 }
2289
2290 return status;
2291}
2292
2293
2294/*****************************************************************************
2295 * calc_baud_rate_divisor
2296 * this function calculates the proper baud rate divisor for the specified
2297 * baud rate.
2298 *****************************************************************************/
984f6868 2299static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
1da177e4
LT		 2300{
2301 int i;
2302 __u16 custom;
2303
52950ed4 2304 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
03f0dbf7 2305 if (divisor_table[i].BaudRate == baudrate) {
1da177e4
LT		 2306 *divisor = divisor_table[i].Divisor;
2307 return 0;
2308 }
2309 }
2310
03f0dbf7
AC		 2311 /* We have tried all of the standard baud rates
2312 * lets try to calculate the divisor for this baud rate
2313 * Make sure the baud rate is reasonable */
1da177e4 2314 if (baudrate > 50 && baudrate < 230400) {
03f0dbf7 2315 /* get divisor */
1da177e4
LT		 2316 custom = (__u16)((230400L + baudrate/2) / baudrate);
2317
2318 *divisor = custom;
2319
984f6868 2320 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
1da177e4
LT		 2321 return 0;
2322 }
2323
2324 return -1;
2325}
2326
2327
2328/*****************************************************************************
2329 * send_cmd_write_uart_register
fd589a8f 2330 * this function builds up a uart register message and sends to the device.
1da177e4 2331 *****************************************************************************/
03f0dbf7
AC		 2332static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2333 __u8 regNum, __u8 regValue)
1da177e4 2334{
03f0dbf7
AC		 2335 struct edgeport_serial *edge_serial =
2336 usb_get_serial_data(edge_port->port->serial);
984f6868 2337 struct device *dev = &edge_port->port->dev;
1da177e4
LT		 2338 unsigned char *cmdBuffer;
2339 unsigned char *currCmd;
2340 unsigned long cmdLen = 0;
2341 int status;
2342
984f6868
GKH		 2343 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2344 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
1da177e4 2345
bc71e479
AK		 2346 if (edge_serial->is_epic &&
2347 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2348 regNum == MCR) {
984f6868 2349 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
6e8cf775
GKH		 2350 return 0;
2351 }
2352
bc71e479
AK		 2353 if (edge_serial->is_epic &&
2354 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2355 regNum == LCR) {
984f6868 2356 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
6e8cf775
GKH		 2357 return 0;
2358 }
2359
03f0dbf7
AC		 2360 /* Alloc memory for the string of commands. */
2361 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2362 if (cmdBuffer == NULL)
1da177e4 2363 return -ENOMEM;
1da177e4
LT		 2364
2365 currCmd = cmdBuffer;
2366
03f0dbf7 2367 /* Build a cmd in the buffer to write the given register */
1143832e
GKH		 2368 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2369 regNum, regValue);
1da177e4
LT		 2370
2371 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2372 if (status) {
2373 /* something bad happened, let's free up the memory */
03f0dbf7 2374 kfree(cmdBuffer);
1da177e4
LT		 2375 }
2376
2377 return status;
2378}
2379
2380
2381/*****************************************************************************
2382 * change_port_settings
03f0dbf7
AC		 2383 * This routine is called to set the UART on the device to match the
2384 * specified new settings.
1da177e4 2385 *****************************************************************************/
95da310e
AC		 2386
2387static void change_port_settings(struct tty_struct *tty,
2388 struct edgeport_port *edge_port, struct ktermios *old_termios)
1da177e4 2389{
984f6868 2390 struct device *dev = &edge_port->port->dev;
03f0dbf7
AC		 2391 struct edgeport_serial *edge_serial =
2392 usb_get_serial_data(edge_port->port->serial);
1da177e4
LT		 2393 int baud;
2394 unsigned cflag;
2395 __u8 mask = 0xff;
2396 __u8 lData;
2397 __u8 lParity;
2398 __u8 lStop;
2399 __u8 rxFlow;
2400 __u8 txFlow;
2401 int status;
2402
cb8eaa8b
RK		 2403 if (!edge_port->open &&
2404 !edge_port->openPending) {
984f6868 2405 dev_dbg(dev, "%s - port not opened\n", __func__);
1da177e4
LT		 2406 return;
2407 }
2408
adc8d746 2409 cflag = tty->termios.c_cflag;
1da177e4
LT		 2410
2411 switch (cflag & CSIZE) {
03f0dbf7
AC		 2412 case CS5:
2413 lData = LCR_BITS_5; mask = 0x1f;
984f6868 2414 dev_dbg(dev, "%s - data bits = 5\n", __func__);
03f0dbf7
AC		 2415 break;
2416 case CS6:
2417 lData = LCR_BITS_6; mask = 0x3f;
984f6868 2418 dev_dbg(dev, "%s - data bits = 6\n", __func__);
03f0dbf7
AC		 2419 break;
2420 case CS7:
2421 lData = LCR_BITS_7; mask = 0x7f;
984f6868 2422 dev_dbg(dev, "%s - data bits = 7\n", __func__);
03f0dbf7
AC		 2423 break;
2424 default:
2425 case CS8:
2426 lData = LCR_BITS_8;
984f6868 2427 dev_dbg(dev, "%s - data bits = 8\n", __func__);
03f0dbf7 2428 break;
1da177e4
LT		 2429 }
2430
2431 lParity = LCR_PAR_NONE;
2432 if (cflag & PARENB) {
2433 if (cflag & CMSPAR) {
2434 if (cflag & PARODD) {
2435 lParity = LCR_PAR_MARK;
984f6868 2436 dev_dbg(dev, "%s - parity = mark\n", __func__);
1da177e4
LT		 2437 } else {
2438 lParity = LCR_PAR_SPACE;
984f6868 2439 dev_dbg(dev, "%s - parity = space\n", __func__);
1da177e4
LT		 2440 }
2441 } else if (cflag & PARODD) {
2442 lParity = LCR_PAR_ODD;
984f6868 2443 dev_dbg(dev, "%s - parity = odd\n", __func__);
1da177e4
LT		 2444 } else {
2445 lParity = LCR_PAR_EVEN;
984f6868 2446 dev_dbg(dev, "%s - parity = even\n", __func__);
1da177e4
LT		 2447 }
2448 } else {
984f6868 2449 dev_dbg(dev, "%s - parity = none\n", __func__);
1da177e4
LT		 2450 }
2451
2452 if (cflag & CSTOPB) {
2453 lStop = LCR_STOP_2;
984f6868 2454 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
1da177e4
LT		 2455 } else {
2456 lStop = LCR_STOP_1;
984f6868 2457 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
1da177e4
LT		 2458 }
2459
2460 /* figure out the flow control settings */
2461 rxFlow = txFlow = 0x00;
2462 if (cflag & CRTSCTS) {
2463 rxFlow |= IOSP_RX_FLOW_RTS;
2464 txFlow |= IOSP_TX_FLOW_CTS;
984f6868 2465 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
1da177e4 2466 } else {
984f6868 2467 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
1da177e4
LT		 2468 }
2469
03f0dbf7
AC		 2470 /* if we are implementing XON/XOFF, set the start and stop character
2471 in the device */
1da177e4
LT		 2472 if (I_IXOFF(tty) || I_IXON(tty)) {
2473 unsigned char stop_char = STOP_CHAR(tty);
2474 unsigned char start_char = START_CHAR(tty);
2475
232dce89
GB		 2476 if (!edge_serial->is_epic ||
2477 edge_serial->epic_descriptor.Supports.IOSPSetXChar) {
03f0dbf7
AC		 2478 send_iosp_ext_cmd(edge_port,
2479 IOSP_CMD_SET_XON_CHAR, start_char);
2480 send_iosp_ext_cmd(edge_port,
2481 IOSP_CMD_SET_XOFF_CHAR, stop_char);
6e8cf775 2482 }
1da177e4
LT		 2483
2484 /* if we are implementing INBOUND XON/XOFF */
2485 if (I_IXOFF(tty)) {
2486 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
984f6868
GKH		 2487 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2488 __func__, start_char, stop_char);
1da177e4 2489 } else {
984f6868 2490 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
1da177e4
LT		 2491 }
2492
2493 /* if we are implementing OUTBOUND XON/XOFF */
2494 if (I_IXON(tty)) {
2495 txFlow |= IOSP_TX_FLOW_XON_XOFF;
984f6868
GKH		 2496 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2497 __func__, start_char, stop_char);
1da177e4 2498 } else {
984f6868 2499 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
1da177e4
LT		 2500 }
2501 }
2502
2503 /* Set flow control to the configured value */
232dce89
GB		 2504 if (!edge_serial->is_epic ||
2505 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)
6e8cf775 2506 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
232dce89
GB		 2507 if (!edge_serial->is_epic ||
2508 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)
6e8cf775 2509 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
1da177e4
LT		 2510
2511
2512 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2513 edge_port->shadowLCR |= (lData | lParity | lStop);
2514
2515 edge_port->validDataMask = mask;
2516
2517 /* Send the updated LCR value to the EdgePort */
03f0dbf7
AC		 2518 status = send_cmd_write_uart_register(edge_port, LCR,
2519 edge_port->shadowLCR);
2520 if (status != 0)
1da177e4 2521 return;
1da177e4
LT		 2522
2523 /* set up the MCR register and send it to the EdgePort */
2524 edge_port->shadowMCR = MCR_MASTER_IE;
03f0dbf7 2525 if (cflag & CBAUD)
1da177e4 2526 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
03f0dbf7
AC		 2527
2528 status = send_cmd_write_uart_register(edge_port, MCR,
2529 edge_port->shadowMCR);
2530 if (status != 0)
1da177e4 2531 return;
1da177e4
LT		 2532
2533 /* Determine divisor based on baud rate */
2534 baud = tty_get_baud_rate(tty);
2535 if (!baud) {
2536 /* pick a default, any default... */
2537 baud = 9600;
2538 }
2539
984f6868 2540 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
03f0dbf7 2541 status = send_cmd_write_baud_rate(edge_port, baud);
6ce073bd
AC		 2542 if (status == -1) {
2543 /* Speed change was not possible - put back the old speed */
2544 baud = tty_termios_baud_rate(old_termios);
2545 tty_encode_baud_rate(tty, baud, baud);
2546 }
1da177e4
LT		 2547}
2548
2549
2550/****************************************************************************
2551 * unicode_to_ascii
2552 * Turns a string from Unicode into ASCII.
2553 * Doesn't do a good job with any characters that are outside the normal
2554 * ASCII range, but it's only for debugging...
2555 * NOTE: expects the unicode in LE format
2556 ****************************************************************************/
03f0dbf7
AC		 2557static void unicode_to_ascii(char *string, int buflen,
2558 __le16 *unicode, int unicode_size)
1da177e4
LT		 2559{
2560 int i;
2561
ad93375a 2562 if (buflen <= 0) /* never happens, but... */
1da177e4 2563 return;
ad93375a 2564 --buflen; /* space for nul */
1da177e4 2565
ad93375a
PZ		 2566 for (i = 0; i < unicode_size; i++) {
2567 if (i >= buflen)
2568 break;
1da177e4 2569 string[i] = (char)(le16_to_cpu(unicode[i]));
ad93375a
PZ		 2570 }
2571 string[i] = 0x00;
1da177e4
LT		 2572}
2573
2574
2575/****************************************************************************
2576 * get_manufacturing_desc
03f0dbf7 2577 * reads in the manufacturing descriptor and stores it into the serial
1da177e4
LT		 2578 * structure.
2579 ****************************************************************************/
03f0dbf7 2580static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
1da177e4 2581{
984f6868 2582 struct device *dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 2583 int response;
2584
984f6868 2585 dev_dbg(dev, "getting manufacturer descriptor\n");
1da177e4 2586
03f0dbf7
AC		 2587 response = rom_read(edge_serial->serial,
2588 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2589 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2590 EDGE_MANUF_DESC_LEN,
2591 (__u8 *)(&edge_serial->manuf_descriptor));
1da177e4 2592
3c0e25d8
JH		 2593 if (response < 0) {
2594 dev_err(dev, "error in getting manufacturer descriptor: %d\n",
2595 response);
2596 } else {
1da177e4 2597 char string[30];
984f6868
GKH		 2598 dev_dbg(dev, "**Manufacturer Descriptor\n");
2599 dev_dbg(dev, " RomSize: %dK\n",
03f0dbf7 2600 edge_serial->manuf_descriptor.RomSize);
984f6868 2601 dev_dbg(dev, " RamSize: %dK\n",
03f0dbf7 2602 edge_serial->manuf_descriptor.RamSize);
984f6868 2603 dev_dbg(dev, " CpuRev: %d\n",
03f0dbf7 2604 edge_serial->manuf_descriptor.CpuRev);
984f6868 2605 dev_dbg(dev, " BoardRev: %d\n",
03f0dbf7 2606 edge_serial->manuf_descriptor.BoardRev);
984f6868 2607 dev_dbg(dev, " NumPorts: %d\n",
03f0dbf7 2608 edge_serial->manuf_descriptor.NumPorts);
984f6868 2609 dev_dbg(dev, " DescDate: %d/%d/%d\n",
03f0dbf7
AC		 2610 edge_serial->manuf_descriptor.DescDate[0],
2611 edge_serial->manuf_descriptor.DescDate[1],
2612 edge_serial->manuf_descriptor.DescDate[2]+1900);
4bc203d9 2613 unicode_to_ascii(string, sizeof(string),
03f0dbf7
AC		 2614 edge_serial->manuf_descriptor.SerialNumber,
2615 edge_serial->manuf_descriptor.SerNumLength/2);
984f6868 2616 dev_dbg(dev, " SerialNumber: %s\n", string);
4bc203d9 2617 unicode_to_ascii(string, sizeof(string),
03f0dbf7
AC		 2618 edge_serial->manuf_descriptor.AssemblyNumber,
2619 edge_serial->manuf_descriptor.AssemblyNumLength/2);
984f6868 2620 dev_dbg(dev, " AssemblyNumber: %s\n", string);
4bc203d9 2621 unicode_to_ascii(string, sizeof(string),
ad93375a
PZ		 2622 edge_serial->manuf_descriptor.OemAssyNumber,
2623 edge_serial->manuf_descriptor.OemAssyNumLength/2);
984f6868
GKH		 2624 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2625 dev_dbg(dev, " UartType: %d\n",
03f0dbf7 2626 edge_serial->manuf_descriptor.UartType);
984f6868 2627 dev_dbg(dev, " IonPid: %d\n",
03f0dbf7 2628 edge_serial->manuf_descriptor.IonPid);
984f6868 2629 dev_dbg(dev, " IonConfig: %d\n",
03f0dbf7 2630 edge_serial->manuf_descriptor.IonConfig);
1da177e4
LT		 2631 }
2632}
2633
2634
2635/****************************************************************************
2636 * get_boot_desc
03f0dbf7 2637 * reads in the bootloader descriptor and stores it into the serial
1da177e4
LT		 2638 * structure.
2639 ****************************************************************************/
03f0dbf7 2640static void get_boot_desc(struct edgeport_serial *edge_serial)
1da177e4 2641{
984f6868 2642 struct device *dev = &edge_serial->serial->dev->dev;
1da177e4
LT		 2643 int response;
2644
984f6868 2645 dev_dbg(dev, "getting boot descriptor\n");
1da177e4 2646
03f0dbf7
AC		 2647 response = rom_read(edge_serial->serial,
2648 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2649 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2650 EDGE_BOOT_DESC_LEN,
2651 (__u8 *)(&edge_serial->boot_descriptor));
1da177e4 2652
3c0e25d8
JH		 2653 if (response < 0) {
2654 dev_err(dev, "error in getting boot descriptor: %d\n",
2655 response);
2656 } else {
984f6868
GKH		 2657 dev_dbg(dev, "**Boot Descriptor:\n");
2658 dev_dbg(dev, " BootCodeLength: %d\n",
2659 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2660 dev_dbg(dev, " MajorVersion: %d\n",
03f0dbf7 2661 edge_serial->boot_descriptor.MajorVersion);
984f6868 2662 dev_dbg(dev, " MinorVersion: %d\n",
03f0dbf7 2663 edge_serial->boot_descriptor.MinorVersion);
984f6868 2664 dev_dbg(dev, " BuildNumber: %d\n",
03f0dbf7 2665 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
984f6868 2666 dev_dbg(dev, " Capabilities: 0x%x\n",
03f0dbf7 2667 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
984f6868 2668 dev_dbg(dev, " UConfig0: %d\n",
03f0dbf7 2669 edge_serial->boot_descriptor.UConfig0);
984f6868 2670 dev_dbg(dev, " UConfig1: %d\n",
03f0dbf7 2671 edge_serial->boot_descriptor.UConfig1);
1da177e4
LT		 2672 }
2673}
2674
2675
2676/****************************************************************************
2677 * load_application_firmware
2678 * This is called to load the application firmware to the device
2679 ****************************************************************************/
03f0dbf7 2680static void load_application_firmware(struct edgeport_serial *edge_serial)
1da177e4 2681{
984f6868 2682 struct device *dev = &edge_serial->serial->dev->dev;
5b9ea932
JS		 2683 const struct ihex_binrec *rec;
2684 const struct firmware *fw;
2685 const char *fw_name;
2686 const char *fw_info;
1da177e4 2687 int response;
5b9ea932
JS		 2688 __u32 Operaddr;
2689 __u16 build;
1da177e4
LT		 2690
2691 switch (edge_serial->product_info.iDownloadFile) {
2692 case EDGE_DOWNLOAD_FILE_I930:
5b9ea932
JS		 2693 fw_info = "downloading firmware version (930)";
2694 fw_name = "edgeport/down.fw";
1da177e4
LT		 2695 break;
2696
2697 case EDGE_DOWNLOAD_FILE_80251:
5b9ea932
JS		 2698 fw_info = "downloading firmware version (80251)";
2699 fw_name = "edgeport/down2.fw";
1da177e4
LT		 2700 break;
2701
2702 case EDGE_DOWNLOAD_FILE_NONE:
984f6868 2703 dev_dbg(dev, "No download file specified, skipping download\n");
1da177e4
LT		 2704 return;
2705
2706 default:
2707 return;
2708 }
2709
5b9ea932
JS		 2710 response = request_ihex_firmware(&fw, fw_name,
2711 &edge_serial->serial->dev->dev);
2712 if (response) {
984f6868 2713 dev_err(dev, "Failed to load image \"%s\" err %d\n",
5b9ea932
JS		 2714 fw_name, response);
2715 return;
2716 }
2717
2718 rec = (const struct ihex_binrec *)fw->data;
2719 build = (rec->data[2] << 8) | rec->data[3];
2720
984f6868 2721 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
5b9ea932 2722
271c1150
BM		 2723 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2724 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
5b9ea932 2725 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
1da177e4 2726
5b9ea932
JS		 2727 for (rec = ihex_next_binrec(rec); rec;
2728 rec = ihex_next_binrec(rec)) {
2729 Operaddr = be32_to_cpu(rec->addr);
2730 response = sram_write(edge_serial->serial,
2731 Operaddr >> 16,
2732 Operaddr & 0xFFFF,
2733 be16_to_cpu(rec->len),
2734 &rec->data[0]);
1da177e4 2735 if (response < 0) {
5b9ea932
JS		 2736 dev_err(&edge_serial->serial->dev->dev,
2737 "sram_write failed (%x, %x, %d)\n",
2738 Operaddr >> 16, Operaddr & 0xFFFF,
2739 be16_to_cpu(rec->len));
1da177e4
LT		 2740 break;
2741 }
2742 }
2743
984f6868
GKH		 2744 dev_dbg(dev, "sending exec_dl_code\n");
2745 response = usb_control_msg (edge_serial->serial->dev,
2746 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2747 USB_REQUEST_ION_EXEC_DL_CODE,
1da177e4
LT		 2748 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2749
5b9ea932 2750 release_firmware(fw);
1da177e4
LT		 2751}
2752
2753
2754/****************************************************************************
2755 * edge_startup
2756 ****************************************************************************/
03f0dbf7 2757static int edge_startup(struct usb_serial *serial)
1da177e4
LT		 2758{
2759 struct edgeport_serial *edge_serial;
1da177e4 2760 struct usb_device *dev;
984f6868 2761 struct device *ddev = &serial->dev->dev;
c27f3efc 2762 int i;
6e8cf775 2763 int response;
cb8eaa8b
RK		 2764 bool interrupt_in_found;
2765 bool bulk_in_found;
2766 bool bulk_out_found;
6e8cf775
GKH		 2767 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2768 EDGE_COMPATIBILITY_MASK1,
2769 EDGE_COMPATIBILITY_MASK2 };
1da177e4 2770
0dd40842
JH		 2771 if (serial->num_bulk_in < 1 || serial->num_interrupt_in < 1) {
2772 dev_err(&serial->interface->dev, "missing endpoints\n");
2773 return -ENODEV;
2774 }
2775
1da177e4
LT		 2776 dev = serial->dev;
2777
2778 /* create our private serial structure */
80b6ca48 2779 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
10c642d0 2780 if (!edge_serial)
1da177e4 2781 return -ENOMEM;
10c642d0 2782
1da177e4
LT		 2783 spin_lock_init(&edge_serial->es_lock);
2784 edge_serial->serial = serial;
2785 usb_set_serial_data(serial, edge_serial);
2786
2787 /* get the name for the device from the device */
f10718f5 2788 i = usb_string(dev, dev->descriptor.iManufacturer,
ad93375a 2789 &edge_serial->name[0], MAX_NAME_LEN+1);
f10718f5
DC		 2790 if (i < 0)
2791 i = 0;
ad93375a 2792 edge_serial->name[i++] = ' ';
f10718f5 2793 usb_string(dev, dev->descriptor.iProduct,
ad93375a 2794 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
1da177e4
LT		 2795
2796 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2797
6e8cf775 2798 /* Read the epic descriptor */
e4457d97 2799 if (get_epic_descriptor(edge_serial) < 0) {
6e8cf775
GKH		 2800 /* memcpy descriptor to Supports structures */
2801 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2802 sizeof(struct edge_compatibility_bits));
1da177e4 2803
6e8cf775 2804 /* get the manufacturing descriptor for this device */
03f0dbf7 2805 get_manufacturing_desc(edge_serial);
1da177e4 2806
6e8cf775 2807 /* get the boot descriptor */
03f0dbf7 2808 get_boot_desc(edge_serial);
6e8cf775
GKH		 2809
2810 get_product_info(edge_serial);
2811 }
1da177e4
LT		 2812
2813 /* set the number of ports from the manufacturing description */
2814 /* serial->num_ports = serial->product_info.NumPorts; */
6e8cf775
GKH		 2815 if ((!edge_serial->is_epic) &&
2816 (edge_serial->product_info.NumPorts != serial->num_ports)) {
984f6868
GKH		 2817 dev_warn(ddev,
2818 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
6e8cf775
GKH		 2819 edge_serial->product_info.NumPorts,
2820 serial->num_ports);
1da177e4
LT		 2821 }
2822
984f6868 2823 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
1da177e4 2824
6e8cf775
GKH		 2825 /* If not an EPiC device */
2826 if (!edge_serial->is_epic) {
2827 /* now load the application firmware into this device */
03f0dbf7 2828 load_application_firmware(edge_serial);
1da177e4 2829
984f6868 2830 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
1da177e4 2831
6e8cf775 2832 /* Check current Edgeport EEPROM and update if necessary */
03f0dbf7 2833 update_edgeport_E2PROM(edge_serial);
1da177e4 2834
984f6868 2835 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
6e8cf775
GKH		 2836
2837 /* set the configuration to use #1 */
984f6868 2838/* dev_dbg(ddev, "set_configuration 1\n"); */
03f0dbf7 2839/* usb_set_configuration (dev, 1); */
6e8cf775 2840 }
984f6868 2841 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
5b9ea932
JS		 2842 edge_serial->product_info.FirmwareMajorVersion,
2843 edge_serial->product_info.FirmwareMinorVersion,
2844 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
1da177e4 2845
03f0dbf7 2846 /* we set up the pointers to the endpoints in the edge_open function,
1da177e4
LT		 2847 * as the structures aren't created yet. */
2848
6e8cf775
GKH		 2849 response = 0;
2850
2851 if (edge_serial->is_epic) {
03f0dbf7
AC		 2852 /* EPIC thing, set up our interrupt polling now and our read
2853 * urb, so that the device knows it really is connected. */
cb8eaa8b 2854 interrupt_in_found = bulk_in_found = bulk_out_found = false;
03f0dbf7
AC		 2855 for (i = 0; i < serial->interface->altsetting[0]
2856 .desc.bNumEndpoints; ++i) {
6e8cf775
GKH		 2857 struct usb_endpoint_descriptor *endpoint;
2858 int buffer_size;
2859
03f0dbf7
AC		 2860 endpoint = &serial->interface->altsetting[0].
2861 endpoint[i].desc;
29cc8897 2862 buffer_size = usb_endpoint_maxp(endpoint);
cb8eaa8b 2863 if (!interrupt_in_found &&
6e8cf775
GKH		 2864 (usb_endpoint_is_int_in(endpoint))) {
2865 /* we found a interrupt in endpoint */
984f6868 2866 dev_dbg(ddev, "found interrupt in\n");
6e8cf775
GKH		 2867
2868 /* not set up yet, so do it now */
03f0dbf7
AC		 2869 edge_serial->interrupt_read_urb =
2870 usb_alloc_urb(0, GFP_KERNEL);
c5c0c555
JH		 2871 if (!edge_serial->interrupt_read_urb) {
2872 response = -ENOMEM;
2873 break;
2874 }
10c642d0 2875
03f0dbf7
AC		 2876 edge_serial->interrupt_in_buffer =
2877 kmalloc(buffer_size, GFP_KERNEL);
6e8cf775 2878 if (!edge_serial->interrupt_in_buffer) {
c5c0c555
JH		 2879 response = -ENOMEM;
2880 break;
6e8cf775 2881 }
03f0dbf7
AC		 2882 edge_serial->interrupt_in_endpoint =
2883 endpoint->bEndpointAddress;
6e8cf775
GKH		 2884
2885 /* set up our interrupt urb */
03f0dbf7
AC		 2886 usb_fill_int_urb(
2887 edge_serial->interrupt_read_urb,
2888 dev,
2889 usb_rcvintpipe(dev,
2890 endpoint->bEndpointAddress),
2891 edge_serial->interrupt_in_buffer,
2892 buffer_size,
2893 edge_interrupt_callback,
2894 edge_serial,
2895 endpoint->bInterval);
6e8cf775 2896
cb8eaa8b 2897 interrupt_in_found = true;
6e8cf775
GKH		 2898 }
2899
cb8eaa8b 2900 if (!bulk_in_found &&
03f0dbf7 2901 (usb_endpoint_is_bulk_in(endpoint))) {
6e8cf775 2902 /* we found a bulk in endpoint */
984f6868 2903 dev_dbg(ddev, "found bulk in\n");
6e8cf775
GKH		 2904
2905 /* not set up yet, so do it now */
03f0dbf7
AC		 2906 edge_serial->read_urb =
2907 usb_alloc_urb(0, GFP_KERNEL);
c5c0c555
JH		 2908 if (!edge_serial->read_urb) {
2909 response = -ENOMEM;
2910 break;
2911 }
10c642d0 2912
03f0dbf7
AC		 2913 edge_serial->bulk_in_buffer =
2914 kmalloc(buffer_size, GFP_KERNEL);
6e8cf775 2915 if (!edge_serial->bulk_in_buffer) {
c5c0c555
JH		 2916 response = -ENOMEM;
2917 break;
6e8cf775 2918 }
03f0dbf7
AC		 2919 edge_serial->bulk_in_endpoint =
2920 endpoint->bEndpointAddress;
6e8cf775
GKH		 2921
2922 /* set up our bulk in urb */
2923 usb_fill_bulk_urb(edge_serial->read_urb, dev,
03f0dbf7
AC		 2924 usb_rcvbulkpipe(dev,
2925 endpoint->bEndpointAddress),
2926 edge_serial->bulk_in_buffer,
29cc8897 2927 usb_endpoint_maxp(endpoint),
03f0dbf7
AC		 2928 edge_bulk_in_callback,
2929 edge_serial);
cb8eaa8b 2930 bulk_in_found = true;
6e8cf775
GKH		 2931 }
2932
cb8eaa8b 2933 if (!bulk_out_found &&
6e8cf775
GKH		 2934 (usb_endpoint_is_bulk_out(endpoint))) {
2935 /* we found a bulk out endpoint */
984f6868 2936 dev_dbg(ddev, "found bulk out\n");
03f0dbf7
AC		 2937 edge_serial->bulk_out_endpoint =
2938 endpoint->bEndpointAddress;
cb8eaa8b 2939 bulk_out_found = true;
6e8cf775
GKH		 2940 }
2941 }
2942
c5c0c555
JH		 2943 if (response || !interrupt_in_found || !bulk_in_found ||
2944 !bulk_out_found) {
2945 if (!response) {
2946 dev_err(ddev, "expected endpoints not found\n");
2947 response = -ENODEV;
2948 }
2949
2950 usb_free_urb(edge_serial->interrupt_read_urb);
2951 kfree(edge_serial->interrupt_in_buffer);
2952
2953 usb_free_urb(edge_serial->read_urb);
2954 kfree(edge_serial->bulk_in_buffer);
2955
2956 kfree(edge_serial);
2957
2958 return response;
6e8cf775
GKH		 2959 }
2960
2961 /* start interrupt read for this edgeport this interrupt will
2962 * continue as long as the edgeport is connected */
03f0dbf7
AC		 2963 response = usb_submit_urb(edge_serial->interrupt_read_urb,
2964 GFP_KERNEL);
6e8cf775 2965 if (response)
984f6868 2966 dev_err(ddev, "%s - Error %d submitting control urb\n",
194343d9 2967 __func__, response);
6e8cf775
GKH		 2968 }
2969 return response;
1da177e4
LT		 2970}
2971
2972
2973/****************************************************************************
f9c99bb8 2974 * edge_disconnect
1da177e4
LT		 2975 * This function is called whenever the device is removed from the usb bus.
2976 ****************************************************************************/
f9c99bb8 2977static void edge_disconnect(struct usb_serial *serial)
1da177e4 2978{
6e8cf775 2979 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
1da177e4 2980
6e8cf775 2981 if (edge_serial->is_epic) {
74ac07e8 2982 usb_kill_urb(edge_serial->interrupt_read_urb);
74ac07e8 2983 usb_kill_urb(edge_serial->read_urb);
6e8cf775 2984 }
f9c99bb8
AS		 2985}
2986
2987
2988/****************************************************************************
2989 * edge_release
2990 * This function is called when the device structure is deallocated.
2991 ****************************************************************************/
2992static void edge_release(struct usb_serial *serial)
2993{
2994 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
6e8cf775 2995
c8d62957
JH		 2996 if (edge_serial->is_epic) {
2997 usb_kill_urb(edge_serial->interrupt_read_urb);
2998 usb_free_urb(edge_serial->interrupt_read_urb);
2999 kfree(edge_serial->interrupt_in_buffer);
3000
3001 usb_kill_urb(edge_serial->read_urb);
3002 usb_free_urb(edge_serial->read_urb);
3003 kfree(edge_serial->bulk_in_buffer);
3004 }
3005
6e8cf775 3006 kfree(edge_serial);
1da177e4
LT		 3007}
3008
c27f3efc
JH		 3009static int edge_port_probe(struct usb_serial_port *port)
3010{
3011 struct edgeport_port *edge_port;
3012
3013 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
3014 if (!edge_port)
3015 return -ENOMEM;
3016
3017 spin_lock_init(&edge_port->ep_lock);
3018 edge_port->port = port;
3019
3020 usb_set_serial_port_data(port, edge_port);
3021
3022 return 0;
3023}
3024
3025static int edge_port_remove(struct usb_serial_port *port)
3026{
3027 struct edgeport_port *edge_port;
3028
3029 edge_port = usb_get_serial_port_data(port);
3030 kfree(edge_port);
3031
3032 return 0;
3033}
3034
68e24113 3035module_usb_serial_driver(serial_drivers, id_table_combined);
1da177e4 3036
03f0dbf7
AC		 3037MODULE_AUTHOR(DRIVER_AUTHOR);
3038MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4 3039MODULE_LICENSE("GPL");
5b9ea932
JS		 3040MODULE_FIRMWARE("edgeport/boot.fw");
3041MODULE_FIRMWARE("edgeport/boot2.fw");
3042MODULE_FIRMWARE("edgeport/down.fw");
3043MODULE_FIRMWARE("edgeport/down2.fw");
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