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ARC: [plat-eznps] spinlock aware for MTM
[linux/fpc-iii.git] / drivers / usb / serial / io_edgeport.c
blobbdf8bd814a9aaf89d646545cac01da659ab475b6
1 /*
2 * Edgeport USB Serial Converter driver
3 *
4 * Copyright (C) 2000 Inside Out Networks, All rights reserved.
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * Supports the following devices:
13 * Edgeport/4
14 * Edgeport/4t
15 * Edgeport/2
16 * Edgeport/4i
17 * Edgeport/2i
18 * Edgeport/421
19 * Edgeport/21
20 * Rapidport/4
21 * Edgeport/8
22 * Edgeport/2D8
23 * Edgeport/4D8
24 * Edgeport/8i
25 *
26 * For questions or problems with this driver, contact Inside Out
27 * Networks technical support, or Peter Berger <pberger@brimson.com>,
28 * or Al Borchers <alborchers@steinerpoint.com>.
29 *
30 */
31
32 #include <linux/kernel.h>
33 #include <linux/jiffies.h>
34 #include <linux/errno.h>
35 #include <linux/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>
44 #include <linux/firmware.h>
45 #include <linux/ihex.h>
46 #include <linux/uaccess.h>
47 #include <linux/usb.h>
48 #include <linux/usb/serial.h>
49 #include "io_edgeport.h"
50 #include "io_ionsp.h" /* info for the iosp messages */
51 #include "io_16654.h" /* 16654 UART defines */
52
53 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
54 #define DRIVER_DESC "Edgeport USB Serial Driver"
55
56 #define MAX_NAME_LEN 64
57
58 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */
59
60 static const struct usb_device_id edgeport_2port_id_table[] = {
61 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) },
62 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) },
63 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) },
64 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) },
65 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) },
66 { }
67 };
68
69 static const struct usb_device_id edgeport_4port_id_table[] = {
70 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) },
71 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) },
72 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) },
73 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) },
74 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) },
75 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) },
76 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) },
77 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) },
78 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) },
79 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) },
80 { }
81 };
82
83 static const struct usb_device_id edgeport_8port_id_table[] = {
84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
86 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
87 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) },
88 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) },
89 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) },
90 { }
91 };
92
93 static const struct usb_device_id Epic_port_id_table[] = {
94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
95 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
96 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
97 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) },
98 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) },
99 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) },
100 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) },
101 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) },
102 { }
103 };
104
105 /* Devices that this driver supports */
106 static const struct usb_device_id id_table_combined[] = {
107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) },
108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) },
109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) },
110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) },
111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) },
112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) },
113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) },
114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) },
115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) },
116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) },
117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) },
118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) },
119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) },
120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) },
121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) },
122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) },
123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) },
124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) },
125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) },
126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) },
127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) },
128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) },
129 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) },
130 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) },
131 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) },
132 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) },
133 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) },
134 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) },
135 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) },
136 { } /* Terminating entry */
137 };
138
139 MODULE_DEVICE_TABLE(usb, id_table_combined);
140
141
142 /* receive port state */
143 enum RXSTATE {
144 EXPECT_HDR1 = 0, /* Expect header byte 1 */
145 EXPECT_HDR2 = 1, /* Expect header byte 2 */
146 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */
147 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */
148 };
149
150
151 /* Transmit Fifo
152 * This Transmit queue is an extension of the edgeport Rx buffer.
153 * The maximum amount of data buffered in both the edgeport
154 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
155 */
156 struct TxFifo {
157 unsigned int head; /* index to head pointer (write) */
158 unsigned int tail; /* index to tail pointer (read) */
159 unsigned int count; /* Bytes in queue */
160 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */
161 unsigned char *fifo; /* allocated Buffer */
162 };
163
164 /* This structure holds all of the local port information */
165 struct edgeport_port {
166 __u16 txCredits; /* our current credits for this port */
167 __u16 maxTxCredits; /* the max size of the port */
168
169 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */
170 struct urb *write_urb; /* write URB for this port */
171 bool write_in_progress; /* 'true' while a write URB is outstanding */
172 spinlock_t ep_lock;
173
174 __u8 shadowLCR; /* last LCR value received */
175 __u8 shadowMCR; /* last MCR value received */
176 __u8 shadowMSR; /* last MSR value received */
177 __u8 shadowLSR; /* last LSR value received */
178 __u8 shadowXonChar; /* last value set as XON char in Edgeport */
179 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */
180 __u8 validDataMask;
181 __u32 baudRate;
182
183 bool open;
184 bool openPending;
185 bool commandPending;
186 bool closePending;
187 bool chaseResponsePending;
188
189 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
190 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
191 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
192
193 struct usb_serial_port *port; /* loop back to the owner of this object */
194 };
195
196
197 /* This structure holds all of the individual device information */
198 struct edgeport_serial {
199 char name[MAX_NAME_LEN+2]; /* string name of this device */
200
201 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */
202 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */
203 struct edgeport_product_info product_info; /* Product Info */
204 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */
205 int is_epic; /* flag if EPiC device or not */
206
207 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
208 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
209 struct urb *interrupt_read_urb; /* our interrupt urb */
210
211 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
212 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
213 struct urb *read_urb; /* our bulk read urb */
214 bool read_in_progress;
215 spinlock_t es_lock;
216
217 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
218
219 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */
220
221 enum RXSTATE rxState; /* the current state of the bulk receive processor */
222 __u8 rxHeader1; /* receive header byte 1 */
223 __u8 rxHeader2; /* receive header byte 2 */
224 __u8 rxHeader3; /* receive header byte 3 */
225 __u8 rxPort; /* the port that we are currently receiving data for */
226 __u8 rxStatusCode; /* the receive status code */
227 __u8 rxStatusParam; /* the receive status paramater */
228 __s16 rxBytesRemaining; /* the number of port bytes left to read */
229 struct usb_serial *serial; /* loop back to the owner of this object */
230 };
231
232 /* baud rate information */
233 struct divisor_table_entry {
234 __u32 BaudRate;
235 __u16 Divisor;
236 };
237
238 /*
239 * Define table of divisors for Rev A EdgePort/4 hardware
240 * These assume a 3.6864MHz crystal, the standard /16, and
241 * MCR.7 = 0.
242 */
243
244 static const struct divisor_table_entry divisor_table[] = {
245 { 50, 4608},
246 { 75, 3072},
247 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */
248 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */
249 { 150, 1536},
250 { 300, 768},
251 { 600, 384},
252 { 1200, 192},
253 { 1800, 128},
254 { 2400, 96},
255 { 4800, 48},
256 { 7200, 32},
257 { 9600, 24},
258 { 14400, 16},
259 { 19200, 12},
260 { 38400, 6},
261 { 57600, 4},
262 { 115200, 2},
263 { 230400, 1},
264 };
265
266 /* Number of outstanding Command Write Urbs */
267 static atomic_t CmdUrbs = ATOMIC_INIT(0);
268
269
270 /* local function prototypes */
271
272 /* function prototypes for all URB callbacks */
273 static void edge_interrupt_callback(struct urb *urb);
274 static void edge_bulk_in_callback(struct urb *urb);
275 static void edge_bulk_out_data_callback(struct urb *urb);
276 static void edge_bulk_out_cmd_callback(struct urb *urb);
277
278 /* function prototypes for the usbserial callbacks */
279 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port);
280 static void edge_close(struct usb_serial_port *port);
281 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
282 const unsigned char *buf, int count);
283 static int edge_write_room(struct tty_struct *tty);
284 static int edge_chars_in_buffer(struct tty_struct *tty);
285 static void edge_throttle(struct tty_struct *tty);
286 static void edge_unthrottle(struct tty_struct *tty);
287 static void edge_set_termios(struct tty_struct *tty,
288 struct usb_serial_port *port,
289 struct ktermios *old_termios);
290 static int edge_ioctl(struct tty_struct *tty,
291 unsigned int cmd, unsigned long arg);
292 static void edge_break(struct tty_struct *tty, int break_state);
293 static int edge_tiocmget(struct tty_struct *tty);
294 static int edge_tiocmset(struct tty_struct *tty,
295 unsigned int set, unsigned int clear);
296 static int edge_startup(struct usb_serial *serial);
297 static void edge_disconnect(struct usb_serial *serial);
298 static void edge_release(struct usb_serial *serial);
299 static int edge_port_probe(struct usb_serial_port *port);
300 static int edge_port_remove(struct usb_serial_port *port);
301
302 /* function prototypes for all of our local functions */
303
304 static void process_rcvd_data(struct edgeport_serial *edge_serial,
305 unsigned char *buffer, __u16 bufferLength);
306 static void process_rcvd_status(struct edgeport_serial *edge_serial,
307 __u8 byte2, __u8 byte3);
308 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
309 int length);
310 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
311 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
312 __u8 lsr, __u8 data);
313 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
314 __u8 param);
315 static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor);
316 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
317 int baudRate);
318 static void change_port_settings(struct tty_struct *tty,
319 struct edgeport_port *edge_port,
320 struct ktermios *old_termios);
321 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
322 __u8 regNum, __u8 regValue);
323 static int write_cmd_usb(struct edgeport_port *edge_port,
324 unsigned char *buffer, int writeLength);
325 static void send_more_port_data(struct edgeport_serial *edge_serial,
326 struct edgeport_port *edge_port);
327
328 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
329 __u16 length, const __u8 *data);
330 static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr,
331 __u16 length, __u8 *data);
332 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
333 __u16 length, const __u8 *data);
334 static void get_manufacturing_desc(struct edgeport_serial *edge_serial);
335 static void get_boot_desc(struct edgeport_serial *edge_serial);
336 static void load_application_firmware(struct edgeport_serial *edge_serial);
337
338 static void unicode_to_ascii(char *string, int buflen,
339 __le16 *unicode, int unicode_size);
340
341
342 /* ************************************************************************ */
343 /* ************************************************************************ */
344 /* ************************************************************************ */
345 /* ************************************************************************ */
346
347 /************************************************************************
348 * *
349 * update_edgeport_E2PROM() Compare current versions of *
350 * Boot ROM and Manufacture *
351 * Descriptors with versions *
352 * embedded in this driver *
353 * *
354 ************************************************************************/
355 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial)
356 {
357 struct device *dev = &edge_serial->serial->dev->dev;
358 __u32 BootCurVer;
359 __u32 BootNewVer;
360 __u8 BootMajorVersion;
361 __u8 BootMinorVersion;
362 __u16 BootBuildNumber;
363 __u32 Bootaddr;
364 const struct ihex_binrec *rec;
365 const struct firmware *fw;
366 const char *fw_name;
367 int response;
368
369 switch (edge_serial->product_info.iDownloadFile) {
370 case EDGE_DOWNLOAD_FILE_I930:
371 fw_name = "edgeport/boot.fw";
372 break;
373 case EDGE_DOWNLOAD_FILE_80251:
374 fw_name = "edgeport/boot2.fw";
375 break;
376 default:
377 return;
378 }
379
380 response = request_ihex_firmware(&fw, fw_name,
381 &edge_serial->serial->dev->dev);
382 if (response) {
383 dev_err(dev, "Failed to load image \"%s\" err %d\n",
384 fw_name, response);
385 return;
386 }
387
388 rec = (const struct ihex_binrec *)fw->data;
389 BootMajorVersion = rec->data[0];
390 BootMinorVersion = rec->data[1];
391 BootBuildNumber = (rec->data[2] << 8) | rec->data[3];
392
393 /* Check Boot Image Version */
394 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
395 (edge_serial->boot_descriptor.MinorVersion << 16) +
396 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
397
398 BootNewVer = (BootMajorVersion << 24) +
399 (BootMinorVersion << 16) +
400 BootBuildNumber;
401
402 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n",
403 edge_serial->boot_descriptor.MajorVersion,
404 edge_serial->boot_descriptor.MinorVersion,
405 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
406
407
408 if (BootNewVer > BootCurVer) {
409 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n",
410 edge_serial->boot_descriptor.MajorVersion,
411 edge_serial->boot_descriptor.MinorVersion,
412 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
413 BootMajorVersion, BootMinorVersion, BootBuildNumber);
414
415 dev_dbg(dev, "Downloading new Boot Image\n");
416
417 for (rec = ihex_next_binrec(rec); rec;
418 rec = ihex_next_binrec(rec)) {
419 Bootaddr = be32_to_cpu(rec->addr);
420 response = rom_write(edge_serial->serial,
421 Bootaddr >> 16,
422 Bootaddr & 0xFFFF,
423 be16_to_cpu(rec->len),
424 &rec->data[0]);
425 if (response < 0) {
426 dev_err(&edge_serial->serial->dev->dev,
427 "rom_write failed (%x, %x, %d)\n",
428 Bootaddr >> 16, Bootaddr & 0xFFFF,
429 be16_to_cpu(rec->len));
430 break;
431 }
432 }
433 } else {
434 dev_dbg(dev, "Boot Image -- already up to date\n");
435 }
436 release_firmware(fw);
437 }
438
439 #if 0
440 /************************************************************************
441 *
442 * Get string descriptor from device
443 *
444 ************************************************************************/
445 static int get_string_desc(struct usb_device *dev, int Id,
446 struct usb_string_descriptor **pRetDesc)
447 {
448 struct usb_string_descriptor StringDesc;
449 struct usb_string_descriptor *pStringDesc;
450
451 dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id);
452
453 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc,
454 sizeof(StringDesc)))
455 return 0;
456
457 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL);
458 if (!pStringDesc)
459 return -1;
460
461 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc,
462 StringDesc.bLength)) {
463 kfree(pStringDesc);
464 return -1;
465 }
466
467 *pRetDesc = pStringDesc;
468 return 0;
469 }
470 #endif
471
472 static void dump_product_info(struct edgeport_serial *edge_serial,
473 struct edgeport_product_info *product_info)
474 {
475 struct device *dev = &edge_serial->serial->dev->dev;
476
477 /* Dump Product Info structure */
478 dev_dbg(dev, "**Product Information:\n");
479 dev_dbg(dev, " ProductId %x\n", product_info->ProductId);
480 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts);
481 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer);
482 dev_dbg(dev, " IsServer %d\n", product_info->IsServer);
483 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232);
484 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422);
485 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485);
486 dev_dbg(dev, " RomSize %d\n", product_info->RomSize);
487 dev_dbg(dev, " RamSize %d\n", product_info->RamSize);
488 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev);
489 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev);
490 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n",
491 product_info->BootMajorVersion,
492 product_info->BootMinorVersion,
493 le16_to_cpu(product_info->BootBuildNumber));
494 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n",
495 product_info->FirmwareMajorVersion,
496 product_info->FirmwareMinorVersion,
497 le16_to_cpu(product_info->FirmwareBuildNumber));
498 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n",
499 product_info->ManufactureDescDate[0],
500 product_info->ManufactureDescDate[1],
501 product_info->ManufactureDescDate[2]+1900);
502 dev_dbg(dev, " iDownloadFile 0x%x\n",
503 product_info->iDownloadFile);
504 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer);
505 }
506
507 static void get_product_info(struct edgeport_serial *edge_serial)
508 {
509 struct edgeport_product_info *product_info = &edge_serial->product_info;
510
511 memset(product_info, 0, sizeof(struct edgeport_product_info));
512
513 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
514 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts;
515 product_info->ProdInfoVer = 0;
516
517 product_info->RomSize = edge_serial->manuf_descriptor.RomSize;
518 product_info->RamSize = edge_serial->manuf_descriptor.RamSize;
519 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev;
520 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev;
521
522 product_info->BootMajorVersion =
523 edge_serial->boot_descriptor.MajorVersion;
524 product_info->BootMinorVersion =
525 edge_serial->boot_descriptor.MinorVersion;
526 product_info->BootBuildNumber =
527 edge_serial->boot_descriptor.BuildNumber;
528
529 memcpy(product_info->ManufactureDescDate,
530 edge_serial->manuf_descriptor.DescDate,
531 sizeof(edge_serial->manuf_descriptor.DescDate));
532
533 /* check if this is 2nd generation hardware */
534 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct)
535 & ION_DEVICE_ID_80251_NETCHIP)
536 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251;
537 else
538 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930;
539
540 /* Determine Product type and set appropriate flags */
541 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
542 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
543 case ION_DEVICE_ID_EDGEPORT_4T:
544 case ION_DEVICE_ID_EDGEPORT_4:
545 case ION_DEVICE_ID_EDGEPORT_2:
546 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
547 case ION_DEVICE_ID_EDGEPORT_8:
548 case ION_DEVICE_ID_EDGEPORT_421:
549 case ION_DEVICE_ID_EDGEPORT_21:
550 case ION_DEVICE_ID_EDGEPORT_2_DIN:
551 case ION_DEVICE_ID_EDGEPORT_4_DIN:
552 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
553 product_info->IsRS232 = 1;
554 break;
555
556 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */
557 product_info->IsRS422 = 1;
558 product_info->IsRS485 = 1;
559 break;
560
561 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */
562 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */
563 product_info->IsRS422 = 1;
564 break;
565 }
566
567 dump_product_info(edge_serial, product_info);
568 }
569
570 static int get_epic_descriptor(struct edgeport_serial *ep)
571 {
572 int result;
573 struct usb_serial *serial = ep->serial;
574 struct edgeport_product_info *product_info = &ep->product_info;
575 struct edge_compatibility_descriptor *epic;
576 struct edge_compatibility_bits *bits;
577 struct device *dev = &serial->dev->dev;
578
579 ep->is_epic = 0;
580
581 epic = kmalloc(sizeof(*epic), GFP_KERNEL);
582 if (!epic)
583 return -ENOMEM;
584
585 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
586 USB_REQUEST_ION_GET_EPIC_DESC,
587 0xC0, 0x00, 0x00,
588 epic, sizeof(*epic),
589 300);
590 if (result == sizeof(*epic)) {
591 ep->is_epic = 1;
592 memcpy(&ep->epic_descriptor, epic, sizeof(*epic));
593 memset(product_info, 0, sizeof(struct edgeport_product_info));
594
595 product_info->NumPorts = epic->NumPorts;
596 product_info->ProdInfoVer = 0;
597 product_info->FirmwareMajorVersion = epic->MajorVersion;
598 product_info->FirmwareMinorVersion = epic->MinorVersion;
599 product_info->FirmwareBuildNumber = epic->BuildNumber;
600 product_info->iDownloadFile = epic->iDownloadFile;
601 product_info->EpicVer = epic->EpicVer;
602 product_info->Epic = epic->Supports;
603 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
604 dump_product_info(ep, product_info);
605
606 bits = &ep->epic_descriptor.Supports;
607 dev_dbg(dev, "**EPIC descriptor:\n");
608 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE");
609 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE");
610 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE");
611 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE");
612 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE");
613 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE");
614 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE");
615 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE");
616 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE");
617 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE");
618 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE");
619 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE");
620 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE");
621
622 result = 0;
623 } else if (result >= 0) {
624 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n",
625 result);
626 result = -EIO;
627 }
628
629 kfree(epic);
630
631 return result;
632 }
633
634
635 /************************************************************************/
636 /************************************************************************/
637 /* U S B C A L L B A C K F U N C T I O N S */
638 /* U S B C A L L B A C K F U N C T I O N S */
639 /************************************************************************/
640 /************************************************************************/
641
642 /*****************************************************************************
643 * edge_interrupt_callback
644 * this is the callback function for when we have received data on the
645 * interrupt endpoint.
646 *****************************************************************************/
647 static void edge_interrupt_callback(struct urb *urb)
648 {
649 struct edgeport_serial *edge_serial = urb->context;
650 struct device *dev;
651 struct edgeport_port *edge_port;
652 struct usb_serial_port *port;
653 unsigned char *data = urb->transfer_buffer;
654 int length = urb->actual_length;
655 int bytes_avail;
656 int position;
657 int txCredits;
658 int portNumber;
659 int result;
660 int status = urb->status;
661
662 switch (status) {
663 case 0:
664 /* success */
665 break;
666 case -ECONNRESET:
667 case -ENOENT:
668 case -ESHUTDOWN:
669 /* this urb is terminated, clean up */
670 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
671 return;
672 default:
673 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status);
674 goto exit;
675 }
676
677 dev = &edge_serial->serial->dev->dev;
678
679 /* process this interrupt-read even if there are no ports open */
680 if (length) {
681 usb_serial_debug_data(dev, __func__, length, data);
682
683 if (length > 1) {
684 bytes_avail = data[0] | (data[1] << 8);
685 if (bytes_avail) {
686 spin_lock(&edge_serial->es_lock);
687 edge_serial->rxBytesAvail += bytes_avail;
688 dev_dbg(dev,
689 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n",
690 __func__, bytes_avail,
691 edge_serial->rxBytesAvail,
692 edge_serial->read_in_progress);
693
694 if (edge_serial->rxBytesAvail > 0 &&
695 !edge_serial->read_in_progress) {
696 dev_dbg(dev, "%s - posting a read\n", __func__);
697 edge_serial->read_in_progress = true;
698
699 /* we have pending bytes on the
700 bulk in pipe, send a request */
701 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
702 if (result) {
703 dev_err(dev,
704 "%s - usb_submit_urb(read bulk) failed with result = %d\n",
705 __func__, result);
706 edge_serial->read_in_progress = false;
707 }
708 }
709 spin_unlock(&edge_serial->es_lock);
710 }
711 }
712 /* grab the txcredits for the ports if available */
713 position = 2;
714 portNumber = 0;
715 while ((position < length) &&
716 (portNumber < edge_serial->serial->num_ports)) {
717 txCredits = data[position] | (data[position+1] << 8);
718 if (txCredits) {
719 port = edge_serial->serial->port[portNumber];
720 edge_port = usb_get_serial_port_data(port);
721 if (edge_port->open) {
722 spin_lock(&edge_port->ep_lock);
723 edge_port->txCredits += txCredits;
724 spin_unlock(&edge_port->ep_lock);
725 dev_dbg(dev, "%s - txcredits for port%d = %d\n",
726 __func__, portNumber,
727 edge_port->txCredits);
728
729 /* tell the tty driver that something
730 has changed */
731 tty_port_tty_wakeup(&edge_port->port->port);
732 /* Since we have more credit, check
733 if more data can be sent */
734 send_more_port_data(edge_serial,
735 edge_port);
736 }
737 }
738 position += 2;
739 ++portNumber;
740 }
741 }
742
743 exit:
744 result = usb_submit_urb(urb, GFP_ATOMIC);
745 if (result)
746 dev_err(&urb->dev->dev,
747 "%s - Error %d submitting control urb\n",
748 __func__, result);
749 }
750
751
752 /*****************************************************************************
753 * edge_bulk_in_callback
754 * this is the callback function for when we have received data on the
755 * bulk in endpoint.
756 *****************************************************************************/
757 static void edge_bulk_in_callback(struct urb *urb)
758 {
759 struct edgeport_serial *edge_serial = urb->context;
760 struct device *dev;
761 unsigned char *data = urb->transfer_buffer;
762 int retval;
763 __u16 raw_data_length;
764 int status = urb->status;
765
766 if (status) {
767 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
768 __func__, status);
769 edge_serial->read_in_progress = false;
770 return;
771 }
772
773 if (urb->actual_length == 0) {
774 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__);
775 edge_serial->read_in_progress = false;
776 return;
777 }
778
779 dev = &edge_serial->serial->dev->dev;
780 raw_data_length = urb->actual_length;
781
782 usb_serial_debug_data(dev, __func__, raw_data_length, data);
783
784 spin_lock(&edge_serial->es_lock);
785
786 /* decrement our rxBytes available by the number that we just got */
787 edge_serial->rxBytesAvail -= raw_data_length;
788
789 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__,
790 raw_data_length, edge_serial->rxBytesAvail);
791
792 process_rcvd_data(edge_serial, data, urb->actual_length);
793
794 /* check to see if there's any more data for us to read */
795 if (edge_serial->rxBytesAvail > 0) {
796 dev_dbg(dev, "%s - posting a read\n", __func__);
797 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
798 if (retval) {
799 dev_err(dev,
800 "%s - usb_submit_urb(read bulk) failed, retval = %d\n",
801 __func__, retval);
802 edge_serial->read_in_progress = false;
803 }
804 } else {
805 edge_serial->read_in_progress = false;
806 }
807
808 spin_unlock(&edge_serial->es_lock);
809 }
810
811
812 /*****************************************************************************
813 * edge_bulk_out_data_callback
814 * this is the callback function for when we have finished sending
815 * serial data on the bulk out endpoint.
816 *****************************************************************************/
817 static void edge_bulk_out_data_callback(struct urb *urb)
818 {
819 struct edgeport_port *edge_port = urb->context;
820 int status = urb->status;
821
822 if (status) {
823 dev_dbg(&urb->dev->dev,
824 "%s - nonzero write bulk status received: %d\n",
825 __func__, status);
826 }
827
828 if (edge_port->open)
829 tty_port_tty_wakeup(&edge_port->port->port);
830
831 /* Release the Write URB */
832 edge_port->write_in_progress = false;
833
834 /* Check if more data needs to be sent */
835 send_more_port_data((struct edgeport_serial *)
836 (usb_get_serial_data(edge_port->port->serial)), edge_port);
837 }
838
839
840 /*****************************************************************************
841 * BulkOutCmdCallback
842 * this is the callback function for when we have finished sending a
843 * command on the bulk out endpoint.
844 *****************************************************************************/
845 static void edge_bulk_out_cmd_callback(struct urb *urb)
846 {
847 struct edgeport_port *edge_port = urb->context;
848 int status = urb->status;
849
850 atomic_dec(&CmdUrbs);
851 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n",
852 __func__, urb, atomic_read(&CmdUrbs));
853
854
855 /* clean up the transfer buffer */
856 kfree(urb->transfer_buffer);
857
858 /* Free the command urb */
859 usb_free_urb(urb);
860
861 if (status) {
862 dev_dbg(&urb->dev->dev,
863 "%s - nonzero write bulk status received: %d\n",
864 __func__, status);
865 return;
866 }
867
868 /* tell the tty driver that something has changed */
869 if (edge_port->open)
870 tty_port_tty_wakeup(&edge_port->port->port);
871
872 /* we have completed the command */
873 edge_port->commandPending = false;
874 wake_up(&edge_port->wait_command);
875 }
876
877
878 /*****************************************************************************
879 * Driver tty interface functions
880 *****************************************************************************/
881
882 /*****************************************************************************
883 * SerialOpen
884 * this function is called by the tty driver when a port is opened
885 * If successful, we return 0
886 * Otherwise we return a negative error number.
887 *****************************************************************************/
888 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
889 {
890 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
891 struct device *dev = &port->dev;
892 struct usb_serial *serial;
893 struct edgeport_serial *edge_serial;
894 int response;
895
896 if (edge_port == NULL)
897 return -ENODEV;
898
899 /* see if we've set up our endpoint info yet (can't set it up
900 in edge_startup as the structures were not set up at that time.) */
901 serial = port->serial;
902 edge_serial = usb_get_serial_data(serial);
903 if (edge_serial == NULL)
904 return -ENODEV;
905 if (edge_serial->interrupt_in_buffer == NULL) {
906 struct usb_serial_port *port0 = serial->port[0];
907
908 /* not set up yet, so do it now */
909 edge_serial->interrupt_in_buffer =
910 port0->interrupt_in_buffer;
911 edge_serial->interrupt_in_endpoint =
912 port0->interrupt_in_endpointAddress;
913 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
914 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
915 edge_serial->bulk_in_endpoint =
916 port0->bulk_in_endpointAddress;
917 edge_serial->read_urb = port0->read_urb;
918 edge_serial->bulk_out_endpoint =
919 port0->bulk_out_endpointAddress;
920
921 /* set up our interrupt urb */
922 usb_fill_int_urb(edge_serial->interrupt_read_urb,
923 serial->dev,
924 usb_rcvintpipe(serial->dev,
925 port0->interrupt_in_endpointAddress),
926 port0->interrupt_in_buffer,
927 edge_serial->interrupt_read_urb->transfer_buffer_length,
928 edge_interrupt_callback, edge_serial,
929 edge_serial->interrupt_read_urb->interval);
930
931 /* set up our bulk in urb */
932 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
933 usb_rcvbulkpipe(serial->dev,
934 port0->bulk_in_endpointAddress),
935 port0->bulk_in_buffer,
936 edge_serial->read_urb->transfer_buffer_length,
937 edge_bulk_in_callback, edge_serial);
938 edge_serial->read_in_progress = false;
939
940 /* start interrupt read for this edgeport
941 * this interrupt will continue as long
942 * as the edgeport is connected */
943 response = usb_submit_urb(edge_serial->interrupt_read_urb,
944 GFP_KERNEL);
945 if (response) {
946 dev_err(dev, "%s - Error %d submitting control urb\n",
947 __func__, response);
948 }
949 }
950
951 /* initialize our wait queues */
952 init_waitqueue_head(&edge_port->wait_open);
953 init_waitqueue_head(&edge_port->wait_chase);
954 init_waitqueue_head(&edge_port->wait_command);
955
956 /* initialize our port settings */
957 edge_port->txCredits = 0; /* Can't send any data yet */
958 /* Must always set this bit to enable ints! */
959 edge_port->shadowMCR = MCR_MASTER_IE;
960 edge_port->chaseResponsePending = false;
961
962 /* send a open port command */
963 edge_port->openPending = true;
964 edge_port->open = false;
965 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);
966
967 if (response < 0) {
968 dev_err(dev, "%s - error sending open port command\n", __func__);
969 edge_port->openPending = false;
970 return -ENODEV;
971 }
972
973 /* now wait for the port to be completely opened */
974 wait_event_timeout(edge_port->wait_open, !edge_port->openPending,
975 OPEN_TIMEOUT);
976
977 if (!edge_port->open) {
978 /* open timed out */
979 dev_dbg(dev, "%s - open timedout\n", __func__);
980 edge_port->openPending = false;
981 return -ENODEV;
982 }
983
984 /* create the txfifo */
985 edge_port->txfifo.head = 0;
986 edge_port->txfifo.tail = 0;
987 edge_port->txfifo.count = 0;
988 edge_port->txfifo.size = edge_port->maxTxCredits;
989 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL);
990
991 if (!edge_port->txfifo.fifo) {
992 edge_close(port);
993 return -ENOMEM;
994 }
995
996 /* Allocate a URB for the write */
997 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
998 edge_port->write_in_progress = false;
999
1000 if (!edge_port->write_urb) {
1001 edge_close(port);
1002 return -ENOMEM;
1003 }
1004
1005 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n",
1006 __func__, edge_port->maxTxCredits);
1007
1008 return 0;
1009 }
1010
1011
1012 /************************************************************************
1013 *
1014 * block_until_chase_response
1015 *
1016 * This function will block the close until one of the following:
1017 * 1. Response to our Chase comes from Edgeport
1018 * 2. A timeout of 10 seconds without activity has expired
1019 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
1020 *
1021 ************************************************************************/
1022 static void block_until_chase_response(struct edgeport_port *edge_port)
1023 {
1024 struct device *dev = &edge_port->port->dev;
1025 DEFINE_WAIT(wait);
1026 __u16 lastCredits;
1027 int timeout = 1*HZ;
1028 int loop = 10;
1029
1030 while (1) {
1031 /* Save Last credits */
1032 lastCredits = edge_port->txCredits;
1033
1034 /* Did we get our Chase response */
1035 if (!edge_port->chaseResponsePending) {
1036 dev_dbg(dev, "%s - Got Chase Response\n", __func__);
1037
1038 /* did we get all of our credit back? */
1039 if (edge_port->txCredits == edge_port->maxTxCredits) {
1040 dev_dbg(dev, "%s - Got all credits\n", __func__);
1041 return;
1042 }
1043 }
1044
1045 /* Block the thread for a while */
1046 prepare_to_wait(&edge_port->wait_chase, &wait,
1047 TASK_UNINTERRUPTIBLE);
1048 schedule_timeout(timeout);
1049 finish_wait(&edge_port->wait_chase, &wait);
1050
1051 if (lastCredits == edge_port->txCredits) {
1052 /* No activity.. count down. */
1053 loop--;
1054 if (loop == 0) {
1055 edge_port->chaseResponsePending = false;
1056 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__);
1057 return;
1058 }
1059 } else {
1060 /* Reset timeout value back to 10 seconds */
1061 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__,
1062 lastCredits, edge_port->txCredits);
1063 loop = 10;
1064 }
1065 }
1066 }
1067
1068
1069 /************************************************************************
1070 *
1071 * block_until_tx_empty
1072 *
1073 * This function will block the close until one of the following:
1074 * 1. TX count are 0
1075 * 2. The edgeport has stopped
1076 * 3. A timeout of 3 seconds without activity has expired
1077 *
1078 ************************************************************************/
1079 static void block_until_tx_empty(struct edgeport_port *edge_port)
1080 {
1081 struct device *dev = &edge_port->port->dev;
1082 DEFINE_WAIT(wait);
1083 struct TxFifo *fifo = &edge_port->txfifo;
1084 __u32 lastCount;
1085 int timeout = HZ/10;
1086 int loop = 30;
1087
1088 while (1) {
1089 /* Save Last count */
1090 lastCount = fifo->count;
1091
1092 /* Is the Edgeport Buffer empty? */
1093 if (lastCount == 0) {
1094 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__);
1095 return;
1096 }
1097
1098 /* Block the thread for a while */
1099 prepare_to_wait(&edge_port->wait_chase, &wait,
1100 TASK_UNINTERRUPTIBLE);
1101 schedule_timeout(timeout);
1102 finish_wait(&edge_port->wait_chase, &wait);
1103
1104 dev_dbg(dev, "%s wait\n", __func__);
1105
1106 if (lastCount == fifo->count) {
1107 /* No activity.. count down. */
1108 loop--;
1109 if (loop == 0) {
1110 dev_dbg(dev, "%s - TIMEOUT\n", __func__);
1111 return;
1112 }
1113 } else {
1114 /* Reset timeout value back to seconds */
1115 loop = 30;
1116 }
1117 }
1118 }
1119
1120
1121 /*****************************************************************************
1122 * edge_close
1123 * this function is called by the tty driver when a port is closed
1124 *****************************************************************************/
1125 static void edge_close(struct usb_serial_port *port)
1126 {
1127 struct edgeport_serial *edge_serial;
1128 struct edgeport_port *edge_port;
1129 int status;
1130
1131 edge_serial = usb_get_serial_data(port->serial);
1132 edge_port = usb_get_serial_port_data(port);
1133 if (edge_serial == NULL || edge_port == NULL)
1134 return;
1135
1136 /* block until tx is empty */
1137 block_until_tx_empty(edge_port);
1138
1139 edge_port->closePending = true;
1140
1141 if (!edge_serial->is_epic ||
1142 edge_serial->epic_descriptor.Supports.IOSPChase) {
1143 /* flush and chase */
1144 edge_port->chaseResponsePending = true;
1145
1146 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1147 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1148 if (status == 0)
1149 /* block until chase finished */
1150 block_until_chase_response(edge_port);
1151 else
1152 edge_port->chaseResponsePending = false;
1153 }
1154
1155 if (!edge_serial->is_epic ||
1156 edge_serial->epic_descriptor.Supports.IOSPClose) {
1157 /* close the port */
1158 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__);
1159 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);
1160 }
1161
1162 /* port->close = true; */
1163 edge_port->closePending = false;
1164 edge_port->open = false;
1165 edge_port->openPending = false;
1166
1167 usb_kill_urb(edge_port->write_urb);
1168
1169 if (edge_port->write_urb) {
1170 /* if this urb had a transfer buffer already
1171 (old transfer) free it */
1172 kfree(edge_port->write_urb->transfer_buffer);
1173 usb_free_urb(edge_port->write_urb);
1174 edge_port->write_urb = NULL;
1175 }
1176 kfree(edge_port->txfifo.fifo);
1177 edge_port->txfifo.fifo = NULL;
1178 }
1179
1180 /*****************************************************************************
1181 * SerialWrite
1182 * this function is called by the tty driver when data should be written
1183 * to the port.
1184 * If successful, we return the number of bytes written, otherwise we
1185 * return a negative error number.
1186 *****************************************************************************/
1187 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1188 const unsigned char *data, int count)
1189 {
1190 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1191 struct TxFifo *fifo;
1192 int copySize;
1193 int bytesleft;
1194 int firsthalf;
1195 int secondhalf;
1196 unsigned long flags;
1197
1198 if (edge_port == NULL)
1199 return -ENODEV;
1200
1201 /* get a pointer to the Tx fifo */
1202 fifo = &edge_port->txfifo;
1203
1204 spin_lock_irqsave(&edge_port->ep_lock, flags);
1205
1206 /* calculate number of bytes to put in fifo */
1207 copySize = min((unsigned int)count,
1208 (edge_port->txCredits - fifo->count));
1209
1210 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n",
1211 __func__, count, edge_port->txCredits - fifo->count, copySize);
1212
1213 /* catch writes of 0 bytes which the tty driver likes to give us,
1214 and when txCredits is empty */
1215 if (copySize == 0) {
1216 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__);
1217 goto finish_write;
1218 }
1219
1220 /* queue the data
1221 * since we can never overflow the buffer we do not have to check for a
1222 * full condition
1223 *
1224 * the copy is done is two parts -- first fill to the end of the buffer
1225 * then copy the reset from the start of the buffer
1226 */
1227 bytesleft = fifo->size - fifo->head;
1228 firsthalf = min(bytesleft, copySize);
1229 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__,
1230 firsthalf, bytesleft);
1231
1232 /* now copy our data */
1233 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1234 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]);
1235
1236 /* update the index and size */
1237 fifo->head += firsthalf;
1238 fifo->count += firsthalf;
1239
1240 /* wrap the index */
1241 if (fifo->head == fifo->size)
1242 fifo->head = 0;
1243
1244 secondhalf = copySize-firsthalf;
1245
1246 if (secondhalf) {
1247 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf);
1248 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1249 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]);
1250 /* update the index and size */
1251 fifo->count += secondhalf;
1252 fifo->head += secondhalf;
1253 /* No need to check for wrap since we can not get to end of
1254 * the fifo in this part
1255 */
1256 }
1257
1258 finish_write:
1259 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1260
1261 send_more_port_data((struct edgeport_serial *)
1262 usb_get_serial_data(port->serial), edge_port);
1263
1264 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n",
1265 __func__, copySize, edge_port->txCredits, fifo->count);
1266
1267 return copySize;
1268 }
1269
1270
1271 /************************************************************************
1272 *
1273 * send_more_port_data()
1274 *
1275 * This routine attempts to write additional UART transmit data
1276 * to a port over the USB bulk pipe. It is called (1) when new
1277 * data has been written to a port's TxBuffer from higher layers
1278 * (2) when the peripheral sends us additional TxCredits indicating
1279 * that it can accept more Tx data for a given port; and (3) when
1280 * a bulk write completes successfully and we want to see if we
1281 * can transmit more.
1282 *
1283 ************************************************************************/
1284 static void send_more_port_data(struct edgeport_serial *edge_serial,
1285 struct edgeport_port *edge_port)
1286 {
1287 struct TxFifo *fifo = &edge_port->txfifo;
1288 struct device *dev = &edge_port->port->dev;
1289 struct urb *urb;
1290 unsigned char *buffer;
1291 int status;
1292 int count;
1293 int bytesleft;
1294 int firsthalf;
1295 int secondhalf;
1296 unsigned long flags;
1297
1298 spin_lock_irqsave(&edge_port->ep_lock, flags);
1299
1300 if (edge_port->write_in_progress ||
1301 !edge_port->open ||
1302 (fifo->count == 0)) {
1303 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n",
1304 __func__, fifo->count, edge_port->write_in_progress);
1305 goto exit_send;
1306 }
1307
1308 /* since the amount of data in the fifo will always fit into the
1309 * edgeport buffer we do not need to check the write length
1310 *
1311 * Do we have enough credits for this port to make it worthwhile
1312 * to bother queueing a write. If it's too small, say a few bytes,
1313 * it's better to wait for more credits so we can do a larger write.
1314 */
1315 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1316 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n",
1317 __func__, fifo->count, edge_port->txCredits);
1318 goto exit_send;
1319 }
1320
1321 /* lock this write */
1322 edge_port->write_in_progress = true;
1323
1324 /* get a pointer to the write_urb */
1325 urb = edge_port->write_urb;
1326
1327 /* make sure transfer buffer is freed */
1328 kfree(urb->transfer_buffer);
1329 urb->transfer_buffer = NULL;
1330
1331 /* build the data header for the buffer and port that we are about
1332 to send out */
1333 count = fifo->count;
1334 buffer = kmalloc(count+2, GFP_ATOMIC);
1335 if (!buffer) {
1336 edge_port->write_in_progress = false;
1337 goto exit_send;
1338 }
1339 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);
1340 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);
1341
1342 /* now copy our data */
1343 bytesleft = fifo->size - fifo->tail;
1344 firsthalf = min(bytesleft, count);
1345 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1346 fifo->tail += firsthalf;
1347 fifo->count -= firsthalf;
1348 if (fifo->tail == fifo->size)
1349 fifo->tail = 0;
1350
1351 secondhalf = count-firsthalf;
1352 if (secondhalf) {
1353 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail],
1354 secondhalf);
1355 fifo->tail += secondhalf;
1356 fifo->count -= secondhalf;
1357 }
1358
1359 if (count)
1360 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);
1361
1362 /* fill up the urb with all of our data and submit it */
1363 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
1364 usb_sndbulkpipe(edge_serial->serial->dev,
1365 edge_serial->bulk_out_endpoint),
1366 buffer, count+2,
1367 edge_bulk_out_data_callback, edge_port);
1368
1369 /* decrement the number of credits we have by the number we just sent */
1370 edge_port->txCredits -= count;
1371 edge_port->port->icount.tx += count;
1372
1373 status = usb_submit_urb(urb, GFP_ATOMIC);
1374 if (status) {
1375 /* something went wrong */
1376 dev_err_console(edge_port->port,
1377 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n",
1378 __func__, status);
1379 edge_port->write_in_progress = false;
1380
1381 /* revert the credits as something bad happened. */
1382 edge_port->txCredits += count;
1383 edge_port->port->icount.tx -= count;
1384 }
1385 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
1386 __func__, count, edge_port->txCredits, fifo->count);
1387
1388 exit_send:
1389 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1390 }
1391
1392
1393 /*****************************************************************************
1394 * edge_write_room
1395 * this function is called by the tty driver when it wants to know how
1396 * many bytes of data we can accept for a specific port. If successful,
1397 * we return the amount of room that we have for this port (the txCredits)
1398 * otherwise we return a negative error number.
1399 *****************************************************************************/
1400 static int edge_write_room(struct tty_struct *tty)
1401 {
1402 struct usb_serial_port *port = tty->driver_data;
1403 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1404 int room;
1405 unsigned long flags;
1406
1407 if (edge_port == NULL)
1408 return 0;
1409 if (edge_port->closePending)
1410 return 0;
1411
1412 if (!edge_port->open) {
1413 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1414 return 0;
1415 }
1416
1417 /* total of both buffers is still txCredit */
1418 spin_lock_irqsave(&edge_port->ep_lock, flags);
1419 room = edge_port->txCredits - edge_port->txfifo.count;
1420 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1421
1422 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1423 return room;
1424 }
1425
1426
1427 /*****************************************************************************
1428 * edge_chars_in_buffer
1429 * this function is called by the tty driver when it wants to know how
1430 * many bytes of data we currently have outstanding in the port (data that
1431 * has been written, but hasn't made it out the port yet)
1432 * If successful, we return the number of bytes left to be written in the
1433 * system,
1434 * Otherwise we return a negative error number.
1435 *****************************************************************************/
1436 static int edge_chars_in_buffer(struct tty_struct *tty)
1437 {
1438 struct usb_serial_port *port = tty->driver_data;
1439 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1440 int num_chars;
1441 unsigned long flags;
1442
1443 if (edge_port == NULL)
1444 return 0;
1445 if (edge_port->closePending)
1446 return 0;
1447
1448 if (!edge_port->open) {
1449 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1450 return 0;
1451 }
1452
1453 spin_lock_irqsave(&edge_port->ep_lock, flags);
1454 num_chars = edge_port->maxTxCredits - edge_port->txCredits +
1455 edge_port->txfifo.count;
1456 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1457 if (num_chars) {
1458 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars);
1459 }
1460
1461 return num_chars;
1462 }
1463
1464
1465 /*****************************************************************************
1466 * SerialThrottle
1467 * this function is called by the tty driver when it wants to stop the data
1468 * being read from the port.
1469 *****************************************************************************/
1470 static void edge_throttle(struct tty_struct *tty)
1471 {
1472 struct usb_serial_port *port = tty->driver_data;
1473 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1474 int status;
1475
1476 if (edge_port == NULL)
1477 return;
1478
1479 if (!edge_port->open) {
1480 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1481 return;
1482 }
1483
1484 /* if we are implementing XON/XOFF, send the stop character */
1485 if (I_IXOFF(tty)) {
1486 unsigned char stop_char = STOP_CHAR(tty);
1487 status = edge_write(tty, port, &stop_char, 1);
1488 if (status <= 0)
1489 return;
1490 }
1491
1492 /* if we are implementing RTS/CTS, toggle that line */
1493 if (C_CRTSCTS(tty)) {
1494 edge_port->shadowMCR &= ~MCR_RTS;
1495 status = send_cmd_write_uart_register(edge_port, MCR,
1496 edge_port->shadowMCR);
1497 if (status != 0)
1498 return;
1499 }
1500 }
1501
1502
1503 /*****************************************************************************
1504 * edge_unthrottle
1505 * this function is called by the tty driver when it wants to resume the
1506 * data being read from the port (called after SerialThrottle is called)
1507 *****************************************************************************/
1508 static void edge_unthrottle(struct tty_struct *tty)
1509 {
1510 struct usb_serial_port *port = tty->driver_data;
1511 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1512 int status;
1513
1514 if (edge_port == NULL)
1515 return;
1516
1517 if (!edge_port->open) {
1518 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1519 return;
1520 }
1521
1522 /* if we are implementing XON/XOFF, send the start character */
1523 if (I_IXOFF(tty)) {
1524 unsigned char start_char = START_CHAR(tty);
1525 status = edge_write(tty, port, &start_char, 1);
1526 if (status <= 0)
1527 return;
1528 }
1529 /* if we are implementing RTS/CTS, toggle that line */
1530 if (C_CRTSCTS(tty)) {
1531 edge_port->shadowMCR |= MCR_RTS;
1532 send_cmd_write_uart_register(edge_port, MCR,
1533 edge_port->shadowMCR);
1534 }
1535 }
1536
1537
1538 /*****************************************************************************
1539 * SerialSetTermios
1540 * this function is called by the tty driver when it wants to change
1541 * the termios structure
1542 *****************************************************************************/
1543 static void edge_set_termios(struct tty_struct *tty,
1544 struct usb_serial_port *port, struct ktermios *old_termios)
1545 {
1546 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1547
1548 if (edge_port == NULL)
1549 return;
1550
1551 if (!edge_port->open) {
1552 dev_dbg(&port->dev, "%s - port not opened\n", __func__);
1553 return;
1554 }
1555
1556 /* change the port settings to the new ones specified */
1557 change_port_settings(tty, edge_port, old_termios);
1558 }
1559
1560
1561 /*****************************************************************************
1562 * get_lsr_info - get line status register info
1563 *
1564 * Purpose: Let user call ioctl() to get info when the UART physically
1565 * is emptied. On bus types like RS485, the transmitter must
1566 * release the bus after transmitting. This must be done when
1567 * the transmit shift register is empty, not be done when the
1568 * transmit holding register is empty. This functionality
1569 * allows an RS485 driver to be written in user space.
1570 *****************************************************************************/
1571 static int get_lsr_info(struct edgeport_port *edge_port,
1572 unsigned int __user *value)
1573 {
1574 unsigned int result = 0;
1575 unsigned long flags;
1576
1577 spin_lock_irqsave(&edge_port->ep_lock, flags);
1578 if (edge_port->maxTxCredits == edge_port->txCredits &&
1579 edge_port->txfifo.count == 0) {
1580 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);
1581 result = TIOCSER_TEMT;
1582 }
1583 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1584
1585 if (copy_to_user(value, &result, sizeof(int)))
1586 return -EFAULT;
1587 return 0;
1588 }
1589
1590 static int edge_tiocmset(struct tty_struct *tty,
1591 unsigned int set, unsigned int clear)
1592 {
1593 struct usb_serial_port *port = tty->driver_data;
1594 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1595 unsigned int mcr;
1596
1597 mcr = edge_port->shadowMCR;
1598 if (set & TIOCM_RTS)
1599 mcr |= MCR_RTS;
1600 if (set & TIOCM_DTR)
1601 mcr |= MCR_DTR;
1602 if (set & TIOCM_LOOP)
1603 mcr |= MCR_LOOPBACK;
1604
1605 if (clear & TIOCM_RTS)
1606 mcr &= ~MCR_RTS;
1607 if (clear & TIOCM_DTR)
1608 mcr &= ~MCR_DTR;
1609 if (clear & TIOCM_LOOP)
1610 mcr &= ~MCR_LOOPBACK;
1611
1612 edge_port->shadowMCR = mcr;
1613
1614 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1615
1616 return 0;
1617 }
1618
1619 static int edge_tiocmget(struct tty_struct *tty)
1620 {
1621 struct usb_serial_port *port = tty->driver_data;
1622 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1623 unsigned int result = 0;
1624 unsigned int msr;
1625 unsigned int mcr;
1626
1627 msr = edge_port->shadowMSR;
1628 mcr = edge_port->shadowMCR;
1629 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
1630 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
1631 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
1632 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
1633 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
1634 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
1635
1636 return result;
1637 }
1638
1639 static int get_serial_info(struct edgeport_port *edge_port,
1640 struct serial_struct __user *retinfo)
1641 {
1642 struct serial_struct tmp;
1643
1644 memset(&tmp, 0, sizeof(tmp));
1645
1646 tmp.type = PORT_16550A;
1647 tmp.line = edge_port->port->minor;
1648 tmp.port = edge_port->port->port_number;
1649 tmp.irq = 0;
1650 tmp.xmit_fifo_size = edge_port->maxTxCredits;
1651 tmp.baud_base = 9600;
1652 tmp.close_delay = 5*HZ;
1653 tmp.closing_wait = 30*HZ;
1654
1655 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1656 return -EFAULT;
1657 return 0;
1658 }
1659
1660
1661 /*****************************************************************************
1662 * SerialIoctl
1663 * this function handles any ioctl calls to the driver
1664 *****************************************************************************/
1665 static int edge_ioctl(struct tty_struct *tty,
1666 unsigned int cmd, unsigned long arg)
1667 {
1668 struct usb_serial_port *port = tty->driver_data;
1669 DEFINE_WAIT(wait);
1670 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1671
1672 switch (cmd) {
1673 case TIOCSERGETLSR:
1674 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
1675 return get_lsr_info(edge_port, (unsigned int __user *) arg);
1676
1677 case TIOCGSERIAL:
1678 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
1679 return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1680 }
1681 return -ENOIOCTLCMD;
1682 }
1683
1684
1685 /*****************************************************************************
1686 * SerialBreak
1687 * this function sends a break to the port
1688 *****************************************************************************/
1689 static void edge_break(struct tty_struct *tty, int break_state)
1690 {
1691 struct usb_serial_port *port = tty->driver_data;
1692 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1693 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1694 int status;
1695
1696 if (!edge_serial->is_epic ||
1697 edge_serial->epic_descriptor.Supports.IOSPChase) {
1698 /* flush and chase */
1699 edge_port->chaseResponsePending = true;
1700
1701 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__);
1702 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);
1703 if (status == 0) {
1704 /* block until chase finished */
1705 block_until_chase_response(edge_port);
1706 } else {
1707 edge_port->chaseResponsePending = false;
1708 }
1709 }
1710
1711 if (!edge_serial->is_epic ||
1712 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) {
1713 if (break_state == -1) {
1714 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__);
1715 status = send_iosp_ext_cmd(edge_port,
1716 IOSP_CMD_SET_BREAK, 0);
1717 } else {
1718 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__);
1719 status = send_iosp_ext_cmd(edge_port,
1720 IOSP_CMD_CLEAR_BREAK, 0);
1721 }
1722 if (status)
1723 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n",
1724 __func__);
1725 }
1726 }
1727
1728
1729 /*****************************************************************************
1730 * process_rcvd_data
1731 * this function handles the data received on the bulk in pipe.
1732 *****************************************************************************/
1733 static void process_rcvd_data(struct edgeport_serial *edge_serial,
1734 unsigned char *buffer, __u16 bufferLength)
1735 {
1736 struct device *dev = &edge_serial->serial->dev->dev;
1737 struct usb_serial_port *port;
1738 struct edgeport_port *edge_port;
1739 __u16 lastBufferLength;
1740 __u16 rxLen;
1741
1742 lastBufferLength = bufferLength + 1;
1743
1744 while (bufferLength > 0) {
1745 /* failsafe incase we get a message that we don't understand */
1746 if (lastBufferLength == bufferLength) {
1747 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__);
1748 break;
1749 }
1750 lastBufferLength = bufferLength;
1751
1752 switch (edge_serial->rxState) {
1753 case EXPECT_HDR1:
1754 edge_serial->rxHeader1 = *buffer;
1755 ++buffer;
1756 --bufferLength;
1757
1758 if (bufferLength == 0) {
1759 edge_serial->rxState = EXPECT_HDR2;
1760 break;
1761 }
1762 /* otherwise, drop on through */
1763 case EXPECT_HDR2:
1764 edge_serial->rxHeader2 = *buffer;
1765 ++buffer;
1766 --bufferLength;
1767
1768 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__,
1769 edge_serial->rxHeader1, edge_serial->rxHeader2);
1770 /* Process depending on whether this header is
1771 * data or status */
1772
1773 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1774 /* Decode this status header and go to
1775 * EXPECT_HDR1 (if we can process the status
1776 * with only 2 bytes), or go to EXPECT_HDR3 to
1777 * get the third byte. */
1778 edge_serial->rxPort =
1779 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1780 edge_serial->rxStatusCode =
1781 IOSP_GET_STATUS_CODE(
1782 edge_serial->rxHeader1);
1783
1784 if (!IOSP_STATUS_IS_2BYTE(
1785 edge_serial->rxStatusCode)) {
1786 /* This status needs additional bytes.
1787 * Save what we have and then wait for
1788 * more data.
1789 */
1790 edge_serial->rxStatusParam
1791 = edge_serial->rxHeader2;
1792 edge_serial->rxState = EXPECT_HDR3;
1793 break;
1794 }
1795 /* We have all the header bytes, process the
1796 status now */
1797 process_rcvd_status(edge_serial,
1798 edge_serial->rxHeader2, 0);
1799 edge_serial->rxState = EXPECT_HDR1;
1800 break;
1801 } else {
1802 edge_serial->rxPort =
1803 IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1804 edge_serial->rxBytesRemaining =
1805 IOSP_GET_HDR_DATA_LEN(
1806 edge_serial->rxHeader1,
1807 edge_serial->rxHeader2);
1808 dev_dbg(dev, "%s - Data for Port %u Len %u\n",
1809 __func__,
1810 edge_serial->rxPort,
1811 edge_serial->rxBytesRemaining);
1812
1813 /* ASSERT(DevExt->RxPort < DevExt->NumPorts);
1814 * ASSERT(DevExt->RxBytesRemaining <
1815 * IOSP_MAX_DATA_LENGTH);
1816 */
1817
1818 if (bufferLength == 0) {
1819 edge_serial->rxState = EXPECT_DATA;
1820 break;
1821 }
1822 /* Else, drop through */
1823 }
1824 case EXPECT_DATA: /* Expect data */
1825 if (bufferLength < edge_serial->rxBytesRemaining) {
1826 rxLen = bufferLength;
1827 /* Expect data to start next buffer */
1828 edge_serial->rxState = EXPECT_DATA;
1829 } else {
1830 /* BufLen >= RxBytesRemaining */
1831 rxLen = edge_serial->rxBytesRemaining;
1832 /* Start another header next time */
1833 edge_serial->rxState = EXPECT_HDR1;
1834 }
1835
1836 bufferLength -= rxLen;
1837 edge_serial->rxBytesRemaining -= rxLen;
1838
1839 /* spit this data back into the tty driver if this
1840 port is open */
1841 if (rxLen) {
1842 port = edge_serial->serial->port[
1843 edge_serial->rxPort];
1844 edge_port = usb_get_serial_port_data(port);
1845 if (edge_port->open) {
1846 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n",
1847 __func__, rxLen,
1848 edge_serial->rxPort);
1849 edge_tty_recv(edge_port->port, buffer,
1850 rxLen);
1851 edge_port->port->icount.rx += rxLen;
1852 }
1853 buffer += rxLen;
1854 }
1855 break;
1856
1857 case EXPECT_HDR3: /* Expect 3rd byte of status header */
1858 edge_serial->rxHeader3 = *buffer;
1859 ++buffer;
1860 --bufferLength;
1861
1862 /* We have all the header bytes, process the
1863 status now */
1864 process_rcvd_status(edge_serial,
1865 edge_serial->rxStatusParam,
1866 edge_serial->rxHeader3);
1867 edge_serial->rxState = EXPECT_HDR1;
1868 break;
1869 }
1870 }
1871 }
1872
1873
1874 /*****************************************************************************
1875 * process_rcvd_status
1876 * this function handles the any status messages received on the
1877 * bulk in pipe.
1878 *****************************************************************************/
1879 static void process_rcvd_status(struct edgeport_serial *edge_serial,
1880 __u8 byte2, __u8 byte3)
1881 {
1882 struct usb_serial_port *port;
1883 struct edgeport_port *edge_port;
1884 struct tty_struct *tty;
1885 struct device *dev;
1886 __u8 code = edge_serial->rxStatusCode;
1887
1888 /* switch the port pointer to the one being currently talked about */
1889 port = edge_serial->serial->port[edge_serial->rxPort];
1890 edge_port = usb_get_serial_port_data(port);
1891 if (edge_port == NULL) {
1892 dev_err(&edge_serial->serial->dev->dev,
1893 "%s - edge_port == NULL for port %d\n",
1894 __func__, edge_serial->rxPort);
1895 return;
1896 }
1897 dev = &port->dev;
1898
1899 if (code == IOSP_EXT_STATUS) {
1900 switch (byte2) {
1901 case IOSP_EXT_STATUS_CHASE_RSP:
1902 /* we want to do EXT status regardless of port
1903 * open/closed */
1904 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n",
1905 __func__, edge_serial->rxPort, byte3);
1906 /* Currently, the only EXT_STATUS is Chase, so process
1907 * here instead of one more call to one more subroutine
1908 * If/when more EXT_STATUS, there'll be more work to do
1909 * Also, we currently clear flag and close the port
1910 * regardless of content of above's Byte3.
1911 * We could choose to do something else when Byte3 says
1912 * Timeout on Chase from Edgeport, like wait longer in
1913 * block_until_chase_response, but for now we don't.
1914 */
1915 edge_port->chaseResponsePending = false;
1916 wake_up(&edge_port->wait_chase);
1917 return;
1918
1919 case IOSP_EXT_STATUS_RX_CHECK_RSP:
1920 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n",
1921 __func__, edge_serial->rxPort, byte3);
1922 /* Port->RxCheckRsp = true; */
1923 return;
1924 }
1925 }
1926
1927 if (code == IOSP_STATUS_OPEN_RSP) {
1928 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1929 edge_port->maxTxCredits = edge_port->txCredits;
1930 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n",
1931 __func__, edge_serial->rxPort, byte2, edge_port->txCredits);
1932 handle_new_msr(edge_port, byte2);
1933
1934 /* send the current line settings to the port so we are
1935 in sync with any further termios calls */
1936 tty = tty_port_tty_get(&edge_port->port->port);
1937 if (tty) {
1938 change_port_settings(tty,
1939 edge_port, &tty->termios);
1940 tty_kref_put(tty);
1941 }
1942
1943 /* we have completed the open */
1944 edge_port->openPending = false;
1945 edge_port->open = true;
1946 wake_up(&edge_port->wait_open);
1947 return;
1948 }
1949
1950 /* If port is closed, silently discard all rcvd status. We can
1951 * have cases where buffered status is received AFTER the close
1952 * port command is sent to the Edgeport.
1953 */
1954 if (!edge_port->open || edge_port->closePending)
1955 return;
1956
1957 switch (code) {
1958 /* Not currently sent by Edgeport */
1959 case IOSP_STATUS_LSR:
1960 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n",
1961 __func__, edge_serial->rxPort, byte2);
1962 handle_new_lsr(edge_port, false, byte2, 0);
1963 break;
1964
1965 case IOSP_STATUS_LSR_DATA:
1966 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n",
1967 __func__, edge_serial->rxPort, byte2, byte3);
1968 /* byte2 is LSR Register */
1969 /* byte3 is broken data byte */
1970 handle_new_lsr(edge_port, true, byte2, byte3);
1971 break;
1972 /*
1973 * case IOSP_EXT_4_STATUS:
1974 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n",
1975 * __func__, edge_serial->rxPort, byte2, byte3);
1976 * break;
1977 */
1978 case IOSP_STATUS_MSR:
1979 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n",
1980 __func__, edge_serial->rxPort, byte2);
1981 /*
1982 * Process this new modem status and generate appropriate
1983 * events, etc, based on the new status. This routine
1984 * also saves the MSR in Port->ShadowMsr.
1985 */
1986 handle_new_msr(edge_port, byte2);
1987 break;
1988
1989 default:
1990 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code);
1991 break;
1992 }
1993 }
1994
1995
1996 /*****************************************************************************
1997 * edge_tty_recv
1998 * this function passes data on to the tty flip buffer
1999 *****************************************************************************/
2000 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
2001 int length)
2002 {
2003 int cnt;
2004
2005 cnt = tty_insert_flip_string(&port->port, data, length);
2006 if (cnt < length) {
2007 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
2008 __func__, length - cnt);
2009 }
2010 data += cnt;
2011 length -= cnt;
2012
2013 tty_flip_buffer_push(&port->port);
2014 }
2015
2016
2017 /*****************************************************************************
2018 * handle_new_msr
2019 * this function handles any change to the msr register for a port.
2020 *****************************************************************************/
2021 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2022 {
2023 struct async_icount *icount;
2024
2025 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
2026 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2027 icount = &edge_port->port->icount;
2028
2029 /* update input line counters */
2030 if (newMsr & EDGEPORT_MSR_DELTA_CTS)
2031 icount->cts++;
2032 if (newMsr & EDGEPORT_MSR_DELTA_DSR)
2033 icount->dsr++;
2034 if (newMsr & EDGEPORT_MSR_DELTA_CD)
2035 icount->dcd++;
2036 if (newMsr & EDGEPORT_MSR_DELTA_RI)
2037 icount->rng++;
2038 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
2039 }
2040
2041 /* Save the new modem status */
2042 edge_port->shadowMSR = newMsr & 0xf0;
2043 }
2044
2045
2046 /*****************************************************************************
2047 * handle_new_lsr
2048 * this function handles any change to the lsr register for a port.
2049 *****************************************************************************/
2050 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
2051 __u8 lsr, __u8 data)
2052 {
2053 __u8 newLsr = (__u8) (lsr & (__u8)
2054 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2055 struct async_icount *icount;
2056
2057 edge_port->shadowLSR = lsr;
2058
2059 if (newLsr & LSR_BREAK) {
2060 /*
2061 * Parity and Framing errors only count if they
2062 * occur exclusive of a break being
2063 * received.
2064 */
2065 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2066 }
2067
2068 /* Place LSR data byte into Rx buffer */
2069 if (lsrData)
2070 edge_tty_recv(edge_port->port, &data, 1);
2071
2072 /* update input line counters */
2073 icount = &edge_port->port->icount;
2074 if (newLsr & LSR_BREAK)
2075 icount->brk++;
2076 if (newLsr & LSR_OVER_ERR)
2077 icount->overrun++;
2078 if (newLsr & LSR_PAR_ERR)
2079 icount->parity++;
2080 if (newLsr & LSR_FRM_ERR)
2081 icount->frame++;
2082 }
2083
2084
2085 /****************************************************************************
2086 * sram_write
2087 * writes a number of bytes to the Edgeport device's sram starting at the
2088 * given address.
2089 * If successful returns the number of bytes written, otherwise it returns
2090 * a negative error number of the problem.
2091 ****************************************************************************/
2092 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2093 __u16 length, const __u8 *data)
2094 {
2095 int result;
2096 __u16 current_length;
2097 unsigned char *transfer_buffer;
2098
2099 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length);
2100
2101 transfer_buffer = kmalloc(64, GFP_KERNEL);
2102 if (!transfer_buffer)
2103 return -ENOMEM;
2104
2105 /* need to split these writes up into 64 byte chunks */
2106 result = 0;
2107 while (length > 0) {
2108 if (length > 64)
2109 current_length = 64;
2110 else
2111 current_length = length;
2112
2113 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */
2114 memcpy(transfer_buffer, data, current_length);
2115 result = usb_control_msg(serial->dev,
2116 usb_sndctrlpipe(serial->dev, 0),
2117 USB_REQUEST_ION_WRITE_RAM,
2118 0x40, addr, extAddr, transfer_buffer,
2119 current_length, 300);
2120 if (result < 0)
2121 break;
2122 length -= current_length;
2123 addr += current_length;
2124 data += current_length;
2125 }
2126
2127 kfree(transfer_buffer);
2128 return result;
2129 }
2130
2131
2132 /****************************************************************************
2133 * rom_write
2134 * writes a number of bytes to the Edgeport device's ROM starting at the
2135 * given address.
2136 * If successful returns the number of bytes written, otherwise it returns
2137 * a negative error number of the problem.
2138 ****************************************************************************/
2139 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr,
2140 __u16 length, const __u8 *data)
2141 {
2142 int result;
2143 __u16 current_length;
2144 unsigned char *transfer_buffer;
2145
2146 transfer_buffer = kmalloc(64, GFP_KERNEL);
2147 if (!transfer_buffer)
2148 return -ENOMEM;
2149
2150 /* need to split these writes up into 64 byte chunks */
2151 result = 0;
2152 while (length > 0) {
2153 if (length > 64)
2154 current_length = 64;
2155 else
2156 current_length = length;
2157 memcpy(transfer_buffer, data, current_length);
2158 result = usb_control_msg(serial->dev,
2159 usb_sndctrlpipe(serial->dev, 0),
2160 USB_REQUEST_ION_WRITE_ROM, 0x40,
2161 addr, extAddr,
2162 transfer_buffer, current_length, 300);
2163 if (result < 0)
2164 break;
2165 length -= current_length;
2166 addr += current_length;
2167 data += current_length;
2168 }
2169
2170 kfree(transfer_buffer);
2171 return result;
2172 }
2173
2174
2175 /****************************************************************************
2176 * rom_read
2177 * reads a number of bytes from the Edgeport device starting at the given
2178 * address.
2179 * Returns zero on success or a negative error number.
2180 ****************************************************************************/
2181 static int rom_read(struct usb_serial *serial, __u16 extAddr,
2182 __u16 addr, __u16 length, __u8 *data)
2183 {
2184 int result;
2185 __u16 current_length;
2186 unsigned char *transfer_buffer;
2187
2188 transfer_buffer = kmalloc(64, GFP_KERNEL);
2189 if (!transfer_buffer)
2190 return -ENOMEM;
2191
2192 /* need to split these reads up into 64 byte chunks */
2193 result = 0;
2194 while (length > 0) {
2195 if (length > 64)
2196 current_length = 64;
2197 else
2198 current_length = length;
2199 result = usb_control_msg(serial->dev,
2200 usb_rcvctrlpipe(serial->dev, 0),
2201 USB_REQUEST_ION_READ_ROM,
2202 0xC0, addr, extAddr, transfer_buffer,
2203 current_length, 300);
2204 if (result < current_length) {
2205 if (result >= 0)
2206 result = -EIO;
2207 break;
2208 }
2209 memcpy(data, transfer_buffer, current_length);
2210 length -= current_length;
2211 addr += current_length;
2212 data += current_length;
2213
2214 result = 0;
2215 }
2216
2217 kfree(transfer_buffer);
2218 return result;
2219 }
2220
2221
2222 /****************************************************************************
2223 * send_iosp_ext_cmd
2224 * Is used to send a IOSP message to the Edgeport device
2225 ****************************************************************************/
2226 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,
2227 __u8 command, __u8 param)
2228 {
2229 unsigned char *buffer;
2230 unsigned char *currentCommand;
2231 int length = 0;
2232 int status = 0;
2233
2234 buffer = kmalloc(10, GFP_ATOMIC);
2235 if (!buffer)
2236 return -ENOMEM;
2237
2238 currentCommand = buffer;
2239
2240 MAKE_CMD_EXT_CMD(&currentCommand, &length, edge_port->port->port_number,
2241 command, param);
2242
2243 status = write_cmd_usb(edge_port, buffer, length);
2244 if (status) {
2245 /* something bad happened, let's free up the memory */
2246 kfree(buffer);
2247 }
2248
2249 return status;
2250 }
2251
2252
2253 /*****************************************************************************
2254 * write_cmd_usb
2255 * this function writes the given buffer out to the bulk write endpoint.
2256 *****************************************************************************/
2257 static int write_cmd_usb(struct edgeport_port *edge_port,
2258 unsigned char *buffer, int length)
2259 {
2260 struct edgeport_serial *edge_serial =
2261 usb_get_serial_data(edge_port->port->serial);
2262 struct device *dev = &edge_port->port->dev;
2263 int status = 0;
2264 struct urb *urb;
2265
2266 usb_serial_debug_data(dev, __func__, length, buffer);
2267
2268 /* Allocate our next urb */
2269 urb = usb_alloc_urb(0, GFP_ATOMIC);
2270 if (!urb)
2271 return -ENOMEM;
2272
2273 atomic_inc(&CmdUrbs);
2274 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n",
2275 __func__, urb, atomic_read(&CmdUrbs));
2276
2277 usb_fill_bulk_urb(urb, edge_serial->serial->dev,
2278 usb_sndbulkpipe(edge_serial->serial->dev,
2279 edge_serial->bulk_out_endpoint),
2280 buffer, length, edge_bulk_out_cmd_callback, edge_port);
2281
2282 edge_port->commandPending = true;
2283 status = usb_submit_urb(urb, GFP_ATOMIC);
2284
2285 if (status) {
2286 /* something went wrong */
2287 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n",
2288 __func__, status);
2289 usb_kill_urb(urb);
2290 usb_free_urb(urb);
2291 atomic_dec(&CmdUrbs);
2292 return status;
2293 }
2294
2295 #if 0
2296 wait_event(&edge_port->wait_command, !edge_port->commandPending);
2297
2298 if (edge_port->commandPending) {
2299 /* command timed out */
2300 dev_dbg(dev, "%s - command timed out\n", __func__);
2301 status = -EINVAL;
2302 }
2303 #endif
2304 return status;
2305 }
2306
2307
2308 /*****************************************************************************
2309 * send_cmd_write_baud_rate
2310 * this function sends the proper command to change the baud rate of the
2311 * specified port.
2312 *****************************************************************************/
2313 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,
2314 int baudRate)
2315 {
2316 struct edgeport_serial *edge_serial =
2317 usb_get_serial_data(edge_port->port->serial);
2318 struct device *dev = &edge_port->port->dev;
2319 unsigned char *cmdBuffer;
2320 unsigned char *currCmd;
2321 int cmdLen = 0;
2322 int divisor;
2323 int status;
2324 u32 number = edge_port->port->port_number;
2325
2326 if (edge_serial->is_epic &&
2327 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) {
2328 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n",
2329 baudRate);
2330 return 0;
2331 }
2332
2333 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate);
2334
2335 status = calc_baud_rate_divisor(dev, baudRate, &divisor);
2336 if (status) {
2337 dev_err(dev, "%s - bad baud rate\n", __func__);
2338 return status;
2339 }
2340
2341 /* Alloc memory for the string of commands. */
2342 cmdBuffer = kmalloc(0x100, GFP_ATOMIC);
2343 if (!cmdBuffer)
2344 return -ENOMEM;
2345
2346 currCmd = cmdBuffer;
2347
2348 /* Enable access to divisor latch */
2349 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE);
2350
2351 /* Write the divisor itself */
2352 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor));
2353 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor));
2354
2355 /* Restore original value to disable access to divisor latch */
2356 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR,
2357 edge_port->shadowLCR);
2358
2359 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2360 if (status) {
2361 /* something bad happened, let's free up the memory */
2362 kfree(cmdBuffer);
2363 }
2364
2365 return status;
2366 }
2367
2368
2369 /*****************************************************************************
2370 * calc_baud_rate_divisor
2371 * this function calculates the proper baud rate divisor for the specified
2372 * baud rate.
2373 *****************************************************************************/
2374 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor)
2375 {
2376 int i;
2377 __u16 custom;
2378
2379 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2380 if (divisor_table[i].BaudRate == baudrate) {
2381 *divisor = divisor_table[i].Divisor;
2382 return 0;
2383 }
2384 }
2385
2386 /* We have tried all of the standard baud rates
2387 * lets try to calculate the divisor for this baud rate
2388 * Make sure the baud rate is reasonable */
2389 if (baudrate > 50 && baudrate < 230400) {
2390 /* get divisor */
2391 custom = (__u16)((230400L + baudrate/2) / baudrate);
2392
2393 *divisor = custom;
2394
2395 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom);
2396 return 0;
2397 }
2398
2399 return -1;
2400 }
2401
2402
2403 /*****************************************************************************
2404 * send_cmd_write_uart_register
2405 * this function builds up a uart register message and sends to the device.
2406 *****************************************************************************/
2407 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,
2408 __u8 regNum, __u8 regValue)
2409 {
2410 struct edgeport_serial *edge_serial =
2411 usb_get_serial_data(edge_port->port->serial);
2412 struct device *dev = &edge_port->port->dev;
2413 unsigned char *cmdBuffer;
2414 unsigned char *currCmd;
2415 unsigned long cmdLen = 0;
2416 int status;
2417
2418 dev_dbg(dev, "%s - write to %s register 0x%02x\n",
2419 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue);
2420
2421 if (edge_serial->is_epic &&
2422 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR &&
2423 regNum == MCR) {
2424 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n");
2425 return 0;
2426 }
2427
2428 if (edge_serial->is_epic &&
2429 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR &&
2430 regNum == LCR) {
2431 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n");
2432 return 0;
2433 }
2434
2435 /* Alloc memory for the string of commands. */
2436 cmdBuffer = kmalloc(0x10, GFP_ATOMIC);
2437 if (cmdBuffer == NULL)
2438 return -ENOMEM;
2439
2440 currCmd = cmdBuffer;
2441
2442 /* Build a cmd in the buffer to write the given register */
2443 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,
2444 regNum, regValue);
2445
2446 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2447 if (status) {
2448 /* something bad happened, let's free up the memory */
2449 kfree(cmdBuffer);
2450 }
2451
2452 return status;
2453 }
2454
2455
2456 /*****************************************************************************
2457 * change_port_settings
2458 * This routine is called to set the UART on the device to match the
2459 * specified new settings.
2460 *****************************************************************************/
2461
2462 static void change_port_settings(struct tty_struct *tty,
2463 struct edgeport_port *edge_port, struct ktermios *old_termios)
2464 {
2465 struct device *dev = &edge_port->port->dev;
2466 struct edgeport_serial *edge_serial =
2467 usb_get_serial_data(edge_port->port->serial);
2468 int baud;
2469 unsigned cflag;
2470 __u8 mask = 0xff;
2471 __u8 lData;
2472 __u8 lParity;
2473 __u8 lStop;
2474 __u8 rxFlow;
2475 __u8 txFlow;
2476 int status;
2477
2478 if (!edge_port->open &&
2479 !edge_port->openPending) {
2480 dev_dbg(dev, "%s - port not opened\n", __func__);
2481 return;
2482 }
2483
2484 cflag = tty->termios.c_cflag;
2485
2486 switch (cflag & CSIZE) {
2487 case CS5:
2488 lData = LCR_BITS_5; mask = 0x1f;
2489 dev_dbg(dev, "%s - data bits = 5\n", __func__);
2490 break;
2491 case CS6:
2492 lData = LCR_BITS_6; mask = 0x3f;
2493 dev_dbg(dev, "%s - data bits = 6\n", __func__);
2494 break;
2495 case CS7:
2496 lData = LCR_BITS_7; mask = 0x7f;
2497 dev_dbg(dev, "%s - data bits = 7\n", __func__);
2498 break;
2499 default:
2500 case CS8:
2501 lData = LCR_BITS_8;
2502 dev_dbg(dev, "%s - data bits = 8\n", __func__);
2503 break;
2504 }
2505
2506 lParity = LCR_PAR_NONE;
2507 if (cflag & PARENB) {
2508 if (cflag & CMSPAR) {
2509 if (cflag & PARODD) {
2510 lParity = LCR_PAR_MARK;
2511 dev_dbg(dev, "%s - parity = mark\n", __func__);
2512 } else {
2513 lParity = LCR_PAR_SPACE;
2514 dev_dbg(dev, "%s - parity = space\n", __func__);
2515 }
2516 } else if (cflag & PARODD) {
2517 lParity = LCR_PAR_ODD;
2518 dev_dbg(dev, "%s - parity = odd\n", __func__);
2519 } else {
2520 lParity = LCR_PAR_EVEN;
2521 dev_dbg(dev, "%s - parity = even\n", __func__);
2522 }
2523 } else {
2524 dev_dbg(dev, "%s - parity = none\n", __func__);
2525 }
2526
2527 if (cflag & CSTOPB) {
2528 lStop = LCR_STOP_2;
2529 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2530 } else {
2531 lStop = LCR_STOP_1;
2532 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2533 }
2534
2535 /* figure out the flow control settings */
2536 rxFlow = txFlow = 0x00;
2537 if (cflag & CRTSCTS) {
2538 rxFlow |= IOSP_RX_FLOW_RTS;
2539 txFlow |= IOSP_TX_FLOW_CTS;
2540 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2541 } else {
2542 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2543 }
2544
2545 /* if we are implementing XON/XOFF, set the start and stop character
2546 in the device */
2547 if (I_IXOFF(tty) || I_IXON(tty)) {
2548 unsigned char stop_char = STOP_CHAR(tty);
2549 unsigned char start_char = START_CHAR(tty);
2550
2551 if (!edge_serial->is_epic ||
2552 edge_serial->epic_descriptor.Supports.IOSPSetXChar) {
2553 send_iosp_ext_cmd(edge_port,
2554 IOSP_CMD_SET_XON_CHAR, start_char);
2555 send_iosp_ext_cmd(edge_port,
2556 IOSP_CMD_SET_XOFF_CHAR, stop_char);
2557 }
2558
2559 /* if we are implementing INBOUND XON/XOFF */
2560 if (I_IXOFF(tty)) {
2561 rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2562 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2563 __func__, start_char, stop_char);
2564 } else {
2565 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2566 }
2567
2568 /* if we are implementing OUTBOUND XON/XOFF */
2569 if (I_IXON(tty)) {
2570 txFlow |= IOSP_TX_FLOW_XON_XOFF;
2571 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2572 __func__, start_char, stop_char);
2573 } else {
2574 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2575 }
2576 }
2577
2578 /* Set flow control to the configured value */
2579 if (!edge_serial->is_epic ||
2580 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)
2581 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2582 if (!edge_serial->is_epic ||
2583 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)
2584 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2585
2586
2587 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2588 edge_port->shadowLCR |= (lData | lParity | lStop);
2589
2590 edge_port->validDataMask = mask;
2591
2592 /* Send the updated LCR value to the EdgePort */
2593 status = send_cmd_write_uart_register(edge_port, LCR,
2594 edge_port->shadowLCR);
2595 if (status != 0)
2596 return;
2597
2598 /* set up the MCR register and send it to the EdgePort */
2599 edge_port->shadowMCR = MCR_MASTER_IE;
2600 if (cflag & CBAUD)
2601 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2602
2603 status = send_cmd_write_uart_register(edge_port, MCR,
2604 edge_port->shadowMCR);
2605 if (status != 0)
2606 return;
2607
2608 /* Determine divisor based on baud rate */
2609 baud = tty_get_baud_rate(tty);
2610 if (!baud) {
2611 /* pick a default, any default... */
2612 baud = 9600;
2613 }
2614
2615 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
2616 status = send_cmd_write_baud_rate(edge_port, baud);
2617 if (status == -1) {
2618 /* Speed change was not possible - put back the old speed */
2619 baud = tty_termios_baud_rate(old_termios);
2620 tty_encode_baud_rate(tty, baud, baud);
2621 }
2622 }
2623
2624
2625 /****************************************************************************
2626 * unicode_to_ascii
2627 * Turns a string from Unicode into ASCII.
2628 * Doesn't do a good job with any characters that are outside the normal
2629 * ASCII range, but it's only for debugging...
2630 * NOTE: expects the unicode in LE format
2631 ****************************************************************************/
2632 static void unicode_to_ascii(char *string, int buflen,
2633 __le16 *unicode, int unicode_size)
2634 {
2635 int i;
2636
2637 if (buflen <= 0) /* never happens, but... */
2638 return;
2639 --buflen; /* space for nul */
2640
2641 for (i = 0; i < unicode_size; i++) {
2642 if (i >= buflen)
2643 break;
2644 string[i] = (char)(le16_to_cpu(unicode[i]));
2645 }
2646 string[i] = 0x00;
2647 }
2648
2649
2650 /****************************************************************************
2651 * get_manufacturing_desc
2652 * reads in the manufacturing descriptor and stores it into the serial
2653 * structure.
2654 ****************************************************************************/
2655 static void get_manufacturing_desc(struct edgeport_serial *edge_serial)
2656 {
2657 struct device *dev = &edge_serial->serial->dev->dev;
2658 int response;
2659
2660 dev_dbg(dev, "getting manufacturer descriptor\n");
2661
2662 response = rom_read(edge_serial->serial,
2663 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2664 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff),
2665 EDGE_MANUF_DESC_LEN,
2666 (__u8 *)(&edge_serial->manuf_descriptor));
2667
2668 if (response < 0) {
2669 dev_err(dev, "error in getting manufacturer descriptor: %d\n",
2670 response);
2671 } else {
2672 char string[30];
2673 dev_dbg(dev, "**Manufacturer Descriptor\n");
2674 dev_dbg(dev, " RomSize: %dK\n",
2675 edge_serial->manuf_descriptor.RomSize);
2676 dev_dbg(dev, " RamSize: %dK\n",
2677 edge_serial->manuf_descriptor.RamSize);
2678 dev_dbg(dev, " CpuRev: %d\n",
2679 edge_serial->manuf_descriptor.CpuRev);
2680 dev_dbg(dev, " BoardRev: %d\n",
2681 edge_serial->manuf_descriptor.BoardRev);
2682 dev_dbg(dev, " NumPorts: %d\n",
2683 edge_serial->manuf_descriptor.NumPorts);
2684 dev_dbg(dev, " DescDate: %d/%d/%d\n",
2685 edge_serial->manuf_descriptor.DescDate[0],
2686 edge_serial->manuf_descriptor.DescDate[1],
2687 edge_serial->manuf_descriptor.DescDate[2]+1900);
2688 unicode_to_ascii(string, sizeof(string),
2689 edge_serial->manuf_descriptor.SerialNumber,
2690 edge_serial->manuf_descriptor.SerNumLength/2);
2691 dev_dbg(dev, " SerialNumber: %s\n", string);
2692 unicode_to_ascii(string, sizeof(string),
2693 edge_serial->manuf_descriptor.AssemblyNumber,
2694 edge_serial->manuf_descriptor.AssemblyNumLength/2);
2695 dev_dbg(dev, " AssemblyNumber: %s\n", string);
2696 unicode_to_ascii(string, sizeof(string),
2697 edge_serial->manuf_descriptor.OemAssyNumber,
2698 edge_serial->manuf_descriptor.OemAssyNumLength/2);
2699 dev_dbg(dev, " OemAssyNumber: %s\n", string);
2700 dev_dbg(dev, " UartType: %d\n",
2701 edge_serial->manuf_descriptor.UartType);
2702 dev_dbg(dev, " IonPid: %d\n",
2703 edge_serial->manuf_descriptor.IonPid);
2704 dev_dbg(dev, " IonConfig: %d\n",
2705 edge_serial->manuf_descriptor.IonConfig);
2706 }
2707 }
2708
2709
2710 /****************************************************************************
2711 * get_boot_desc
2712 * reads in the bootloader descriptor and stores it into the serial
2713 * structure.
2714 ****************************************************************************/
2715 static void get_boot_desc(struct edgeport_serial *edge_serial)
2716 {
2717 struct device *dev = &edge_serial->serial->dev->dev;
2718 int response;
2719
2720 dev_dbg(dev, "getting boot descriptor\n");
2721
2722 response = rom_read(edge_serial->serial,
2723 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2724 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff),
2725 EDGE_BOOT_DESC_LEN,
2726 (__u8 *)(&edge_serial->boot_descriptor));
2727
2728 if (response < 0) {
2729 dev_err(dev, "error in getting boot descriptor: %d\n",
2730 response);
2731 } else {
2732 dev_dbg(dev, "**Boot Descriptor:\n");
2733 dev_dbg(dev, " BootCodeLength: %d\n",
2734 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2735 dev_dbg(dev, " MajorVersion: %d\n",
2736 edge_serial->boot_descriptor.MajorVersion);
2737 dev_dbg(dev, " MinorVersion: %d\n",
2738 edge_serial->boot_descriptor.MinorVersion);
2739 dev_dbg(dev, " BuildNumber: %d\n",
2740 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2741 dev_dbg(dev, " Capabilities: 0x%x\n",
2742 le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2743 dev_dbg(dev, " UConfig0: %d\n",
2744 edge_serial->boot_descriptor.UConfig0);
2745 dev_dbg(dev, " UConfig1: %d\n",
2746 edge_serial->boot_descriptor.UConfig1);
2747 }
2748 }
2749
2750
2751 /****************************************************************************
2752 * load_application_firmware
2753 * This is called to load the application firmware to the device
2754 ****************************************************************************/
2755 static void load_application_firmware(struct edgeport_serial *edge_serial)
2756 {
2757 struct device *dev = &edge_serial->serial->dev->dev;
2758 const struct ihex_binrec *rec;
2759 const struct firmware *fw;
2760 const char *fw_name;
2761 const char *fw_info;
2762 int response;
2763 __u32 Operaddr;
2764 __u16 build;
2765
2766 switch (edge_serial->product_info.iDownloadFile) {
2767 case EDGE_DOWNLOAD_FILE_I930:
2768 fw_info = "downloading firmware version (930)";
2769 fw_name = "edgeport/down.fw";
2770 break;
2771
2772 case EDGE_DOWNLOAD_FILE_80251:
2773 fw_info = "downloading firmware version (80251)";
2774 fw_name = "edgeport/down2.fw";
2775 break;
2776
2777 case EDGE_DOWNLOAD_FILE_NONE:
2778 dev_dbg(dev, "No download file specified, skipping download\n");
2779 return;
2780
2781 default:
2782 return;
2783 }
2784
2785 response = request_ihex_firmware(&fw, fw_name,
2786 &edge_serial->serial->dev->dev);
2787 if (response) {
2788 dev_err(dev, "Failed to load image \"%s\" err %d\n",
2789 fw_name, response);
2790 return;
2791 }
2792
2793 rec = (const struct ihex_binrec *)fw->data;
2794 build = (rec->data[2] << 8) | rec->data[3];
2795
2796 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build);
2797
2798 edge_serial->product_info.FirmwareMajorVersion = rec->data[0];
2799 edge_serial->product_info.FirmwareMinorVersion = rec->data[1];
2800 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build);
2801
2802 for (rec = ihex_next_binrec(rec); rec;
2803 rec = ihex_next_binrec(rec)) {
2804 Operaddr = be32_to_cpu(rec->addr);
2805 response = sram_write(edge_serial->serial,
2806 Operaddr >> 16,
2807 Operaddr & 0xFFFF,
2808 be16_to_cpu(rec->len),
2809 &rec->data[0]);
2810 if (response < 0) {
2811 dev_err(&edge_serial->serial->dev->dev,
2812 "sram_write failed (%x, %x, %d)\n",
2813 Operaddr >> 16, Operaddr & 0xFFFF,
2814 be16_to_cpu(rec->len));
2815 break;
2816 }
2817 }
2818
2819 dev_dbg(dev, "sending exec_dl_code\n");
2820 response = usb_control_msg (edge_serial->serial->dev,
2821 usb_sndctrlpipe(edge_serial->serial->dev, 0),
2822 USB_REQUEST_ION_EXEC_DL_CODE,
2823 0x40, 0x4000, 0x0001, NULL, 0, 3000);
2824
2825 release_firmware(fw);
2826 }
2827
2828
2829 /****************************************************************************
2830 * edge_startup
2831 ****************************************************************************/
2832 static int edge_startup(struct usb_serial *serial)
2833 {
2834 struct edgeport_serial *edge_serial;
2835 struct usb_device *dev;
2836 struct device *ddev = &serial->dev->dev;
2837 int i;
2838 int response;
2839 bool interrupt_in_found;
2840 bool bulk_in_found;
2841 bool bulk_out_found;
2842 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0,
2843 EDGE_COMPATIBILITY_MASK1,
2844 EDGE_COMPATIBILITY_MASK2 };
2845
2846 dev = serial->dev;
2847
2848 /* create our private serial structure */
2849 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2850 if (!edge_serial)
2851 return -ENOMEM;
2852
2853 spin_lock_init(&edge_serial->es_lock);
2854 edge_serial->serial = serial;
2855 usb_set_serial_data(serial, edge_serial);
2856
2857 /* get the name for the device from the device */
2858 i = usb_string(dev, dev->descriptor.iManufacturer,
2859 &edge_serial->name[0], MAX_NAME_LEN+1);
2860 if (i < 0)
2861 i = 0;
2862 edge_serial->name[i++] = ' ';
2863 usb_string(dev, dev->descriptor.iProduct,
2864 &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2865
2866 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2867
2868 /* Read the epic descriptor */
2869 if (get_epic_descriptor(edge_serial) < 0) {
2870 /* memcpy descriptor to Supports structures */
2871 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2872 sizeof(struct edge_compatibility_bits));
2873
2874 /* get the manufacturing descriptor for this device */
2875 get_manufacturing_desc(edge_serial);
2876
2877 /* get the boot descriptor */
2878 get_boot_desc(edge_serial);
2879
2880 get_product_info(edge_serial);
2881 }
2882
2883 /* set the number of ports from the manufacturing description */
2884 /* serial->num_ports = serial->product_info.NumPorts; */
2885 if ((!edge_serial->is_epic) &&
2886 (edge_serial->product_info.NumPorts != serial->num_ports)) {
2887 dev_warn(ddev,
2888 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n",
2889 edge_serial->product_info.NumPorts,
2890 serial->num_ports);
2891 }
2892
2893 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies);
2894
2895 /* If not an EPiC device */
2896 if (!edge_serial->is_epic) {
2897 /* now load the application firmware into this device */
2898 load_application_firmware(edge_serial);
2899
2900 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies);
2901
2902 /* Check current Edgeport EEPROM and update if necessary */
2903 update_edgeport_E2PROM(edge_serial);
2904
2905 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies);
2906
2907 /* set the configuration to use #1 */
2908 /* dev_dbg(ddev, "set_configuration 1\n"); */
2909 /* usb_set_configuration (dev, 1); */
2910 }
2911 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n",
2912 edge_serial->product_info.FirmwareMajorVersion,
2913 edge_serial->product_info.FirmwareMinorVersion,
2914 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber));
2915
2916 /* we set up the pointers to the endpoints in the edge_open function,
2917 * as the structures aren't created yet. */
2918
2919 response = 0;
2920
2921 if (edge_serial->is_epic) {
2922 /* EPIC thing, set up our interrupt polling now and our read
2923 * urb, so that the device knows it really is connected. */
2924 interrupt_in_found = bulk_in_found = bulk_out_found = false;
2925 for (i = 0; i < serial->interface->altsetting[0]
2926 .desc.bNumEndpoints; ++i) {
2927 struct usb_endpoint_descriptor *endpoint;
2928 int buffer_size;
2929
2930 endpoint = &serial->interface->altsetting[0].
2931 endpoint[i].desc;
2932 buffer_size = usb_endpoint_maxp(endpoint);
2933 if (!interrupt_in_found &&
2934 (usb_endpoint_is_int_in(endpoint))) {
2935 /* we found a interrupt in endpoint */
2936 dev_dbg(ddev, "found interrupt in\n");
2937
2938 /* not set up yet, so do it now */
2939 edge_serial->interrupt_read_urb =
2940 usb_alloc_urb(0, GFP_KERNEL);
2941 if (!edge_serial->interrupt_read_urb) {
2942 response = -ENOMEM;
2943 break;
2944 }
2945
2946 edge_serial->interrupt_in_buffer =
2947 kmalloc(buffer_size, GFP_KERNEL);
2948 if (!edge_serial->interrupt_in_buffer) {
2949 response = -ENOMEM;
2950 break;
2951 }
2952 edge_serial->interrupt_in_endpoint =
2953 endpoint->bEndpointAddress;
2954
2955 /* set up our interrupt urb */
2956 usb_fill_int_urb(
2957 edge_serial->interrupt_read_urb,
2958 dev,
2959 usb_rcvintpipe(dev,
2960 endpoint->bEndpointAddress),
2961 edge_serial->interrupt_in_buffer,
2962 buffer_size,
2963 edge_interrupt_callback,
2964 edge_serial,
2965 endpoint->bInterval);
2966
2967 interrupt_in_found = true;
2968 }
2969
2970 if (!bulk_in_found &&
2971 (usb_endpoint_is_bulk_in(endpoint))) {
2972 /* we found a bulk in endpoint */
2973 dev_dbg(ddev, "found bulk in\n");
2974
2975 /* not set up yet, so do it now */
2976 edge_serial->read_urb =
2977 usb_alloc_urb(0, GFP_KERNEL);
2978 if (!edge_serial->read_urb) {
2979 response = -ENOMEM;
2980 break;
2981 }
2982
2983 edge_serial->bulk_in_buffer =
2984 kmalloc(buffer_size, GFP_KERNEL);
2985 if (!edge_serial->bulk_in_buffer) {
2986 response = -ENOMEM;
2987 break;
2988 }
2989 edge_serial->bulk_in_endpoint =
2990 endpoint->bEndpointAddress;
2991
2992 /* set up our bulk in urb */
2993 usb_fill_bulk_urb(edge_serial->read_urb, dev,
2994 usb_rcvbulkpipe(dev,
2995 endpoint->bEndpointAddress),
2996 edge_serial->bulk_in_buffer,
2997 usb_endpoint_maxp(endpoint),
2998 edge_bulk_in_callback,
2999 edge_serial);
3000 bulk_in_found = true;
3001 }
3002
3003 if (!bulk_out_found &&
3004 (usb_endpoint_is_bulk_out(endpoint))) {
3005 /* we found a bulk out endpoint */
3006 dev_dbg(ddev, "found bulk out\n");
3007 edge_serial->bulk_out_endpoint =
3008 endpoint->bEndpointAddress;
3009 bulk_out_found = true;
3010 }
3011 }
3012
3013 if (response || !interrupt_in_found || !bulk_in_found ||
3014 !bulk_out_found) {
3015 if (!response) {
3016 dev_err(ddev, "expected endpoints not found\n");
3017 response = -ENODEV;
3018 }
3019
3020 usb_free_urb(edge_serial->interrupt_read_urb);
3021 kfree(edge_serial->interrupt_in_buffer);
3022
3023 usb_free_urb(edge_serial->read_urb);
3024 kfree(edge_serial->bulk_in_buffer);
3025
3026 kfree(edge_serial);
3027
3028 return response;
3029 }
3030
3031 /* start interrupt read for this edgeport this interrupt will
3032 * continue as long as the edgeport is connected */
3033 response = usb_submit_urb(edge_serial->interrupt_read_urb,
3034 GFP_KERNEL);
3035 if (response)
3036 dev_err(ddev, "%s - Error %d submitting control urb\n",
3037 __func__, response);
3038 }
3039 return response;
3040 }
3041
3042
3043 /****************************************************************************
3044 * edge_disconnect
3045 * This function is called whenever the device is removed from the usb bus.
3046 ****************************************************************************/
3047 static void edge_disconnect(struct usb_serial *serial)
3048 {
3049 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3050
3051 if (edge_serial->is_epic) {
3052 usb_kill_urb(edge_serial->interrupt_read_urb);
3053 usb_kill_urb(edge_serial->read_urb);
3054 }
3055 }
3056
3057
3058 /****************************************************************************
3059 * edge_release
3060 * This function is called when the device structure is deallocated.
3061 ****************************************************************************/
3062 static void edge_release(struct usb_serial *serial)
3063 {
3064 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3065
3066 if (edge_serial->is_epic) {
3067 usb_kill_urb(edge_serial->interrupt_read_urb);
3068 usb_free_urb(edge_serial->interrupt_read_urb);
3069 kfree(edge_serial->interrupt_in_buffer);
3070
3071 usb_kill_urb(edge_serial->read_urb);
3072 usb_free_urb(edge_serial->read_urb);
3073 kfree(edge_serial->bulk_in_buffer);
3074 }
3075
3076 kfree(edge_serial);
3077 }
3078
3079 static int edge_port_probe(struct usb_serial_port *port)
3080 {
3081 struct edgeport_port *edge_port;
3082
3083 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
3084 if (!edge_port)
3085 return -ENOMEM;
3086
3087 spin_lock_init(&edge_port->ep_lock);
3088 edge_port->port = port;
3089
3090 usb_set_serial_port_data(port, edge_port);
3091
3092 return 0;
3093 }
3094
3095 static int edge_port_remove(struct usb_serial_port *port)
3096 {
3097 struct edgeport_port *edge_port;
3098
3099 edge_port = usb_get_serial_port_data(port);
3100 kfree(edge_port);
3101
3102 return 0;
3103 }
3104
3105 static struct usb_serial_driver edgeport_2port_device = {
3106 .driver = {
3107 .owner = THIS_MODULE,
3108 .name = "edgeport_2",
3109 },
3110 .description = "Edgeport 2 port adapter",
3111 .id_table = edgeport_2port_id_table,
3112 .num_ports = 2,
3113 .num_bulk_in = 1,
3114 .num_bulk_out = 1,
3115 .num_interrupt_in = 1,
3116 .open = edge_open,
3117 .close = edge_close,
3118 .throttle = edge_throttle,
3119 .unthrottle = edge_unthrottle,
3120 .attach = edge_startup,
3121 .disconnect = edge_disconnect,
3122 .release = edge_release,
3123 .port_probe = edge_port_probe,
3124 .port_remove = edge_port_remove,
3125 .ioctl = edge_ioctl,
3126 .set_termios = edge_set_termios,
3127 .tiocmget = edge_tiocmget,
3128 .tiocmset = edge_tiocmset,
3129 .tiocmiwait = usb_serial_generic_tiocmiwait,
3130 .get_icount = usb_serial_generic_get_icount,
3131 .write = edge_write,
3132 .write_room = edge_write_room,
3133 .chars_in_buffer = edge_chars_in_buffer,
3134 .break_ctl = edge_break,
3135 .read_int_callback = edge_interrupt_callback,
3136 .read_bulk_callback = edge_bulk_in_callback,
3137 .write_bulk_callback = edge_bulk_out_data_callback,
3138 };
3139
3140 static struct usb_serial_driver edgeport_4port_device = {
3141 .driver = {
3142 .owner = THIS_MODULE,
3143 .name = "edgeport_4",
3144 },
3145 .description = "Edgeport 4 port adapter",
3146 .id_table = edgeport_4port_id_table,
3147 .num_ports = 4,
3148 .num_bulk_in = 1,
3149 .num_bulk_out = 1,
3150 .num_interrupt_in = 1,
3151 .open = edge_open,
3152 .close = edge_close,
3153 .throttle = edge_throttle,
3154 .unthrottle = edge_unthrottle,
3155 .attach = edge_startup,
3156 .disconnect = edge_disconnect,
3157 .release = edge_release,
3158 .port_probe = edge_port_probe,
3159 .port_remove = edge_port_remove,
3160 .ioctl = edge_ioctl,
3161 .set_termios = edge_set_termios,
3162 .tiocmget = edge_tiocmget,
3163 .tiocmset = edge_tiocmset,
3164 .tiocmiwait = usb_serial_generic_tiocmiwait,
3165 .get_icount = usb_serial_generic_get_icount,
3166 .write = edge_write,
3167 .write_room = edge_write_room,
3168 .chars_in_buffer = edge_chars_in_buffer,
3169 .break_ctl = edge_break,
3170 .read_int_callback = edge_interrupt_callback,
3171 .read_bulk_callback = edge_bulk_in_callback,
3172 .write_bulk_callback = edge_bulk_out_data_callback,
3173 };
3174
3175 static struct usb_serial_driver edgeport_8port_device = {
3176 .driver = {
3177 .owner = THIS_MODULE,
3178 .name = "edgeport_8",
3179 },
3180 .description = "Edgeport 8 port adapter",
3181 .id_table = edgeport_8port_id_table,
3182 .num_ports = 8,
3183 .num_bulk_in = 1,
3184 .num_bulk_out = 1,
3185 .num_interrupt_in = 1,
3186 .open = edge_open,
3187 .close = edge_close,
3188 .throttle = edge_throttle,
3189 .unthrottle = edge_unthrottle,
3190 .attach = edge_startup,
3191 .disconnect = edge_disconnect,
3192 .release = edge_release,
3193 .port_probe = edge_port_probe,
3194 .port_remove = edge_port_remove,
3195 .ioctl = edge_ioctl,
3196 .set_termios = edge_set_termios,
3197 .tiocmget = edge_tiocmget,
3198 .tiocmset = edge_tiocmset,
3199 .tiocmiwait = usb_serial_generic_tiocmiwait,
3200 .get_icount = usb_serial_generic_get_icount,
3201 .write = edge_write,
3202 .write_room = edge_write_room,
3203 .chars_in_buffer = edge_chars_in_buffer,
3204 .break_ctl = edge_break,
3205 .read_int_callback = edge_interrupt_callback,
3206 .read_bulk_callback = edge_bulk_in_callback,
3207 .write_bulk_callback = edge_bulk_out_data_callback,
3208 };
3209
3210 static struct usb_serial_driver epic_device = {
3211 .driver = {
3212 .owner = THIS_MODULE,
3213 .name = "epic",
3214 },
3215 .description = "EPiC device",
3216 .id_table = Epic_port_id_table,
3217 .num_ports = 1,
3218 .num_bulk_in = 1,
3219 .num_bulk_out = 1,
3220 .num_interrupt_in = 1,
3221 .open = edge_open,
3222 .close = edge_close,
3223 .throttle = edge_throttle,
3224 .unthrottle = edge_unthrottle,
3225 .attach = edge_startup,
3226 .disconnect = edge_disconnect,
3227 .release = edge_release,
3228 .port_probe = edge_port_probe,
3229 .port_remove = edge_port_remove,
3230 .ioctl = edge_ioctl,
3231 .set_termios = edge_set_termios,
3232 .tiocmget = edge_tiocmget,
3233 .tiocmset = edge_tiocmset,
3234 .tiocmiwait = usb_serial_generic_tiocmiwait,
3235 .get_icount = usb_serial_generic_get_icount,
3236 .write = edge_write,
3237 .write_room = edge_write_room,
3238 .chars_in_buffer = edge_chars_in_buffer,
3239 .break_ctl = edge_break,
3240 .read_int_callback = edge_interrupt_callback,
3241 .read_bulk_callback = edge_bulk_in_callback,
3242 .write_bulk_callback = edge_bulk_out_data_callback,
3243 };
3244
3245 static struct usb_serial_driver * const serial_drivers[] = {
3246 &edgeport_2port_device, &edgeport_4port_device,
3247 &edgeport_8port_device, &epic_device, NULL
3248 };
3249
3250 module_usb_serial_driver(serial_drivers, id_table_combined);
3251
3252 MODULE_AUTHOR(DRIVER_AUTHOR);
3253 MODULE_DESCRIPTION(DRIVER_DESC);
3254 MODULE_LICENSE("GPL");
3255 MODULE_FIRMWARE("edgeport/boot.fw");
3256 MODULE_FIRMWARE("edgeport/boot2.fw");
3257 MODULE_FIRMWARE("edgeport/down.fw");
3258 MODULE_FIRMWARE("edgeport/down2.fw");
Linux with added FPC-III support