Commit | Line | Data |
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1da177e4 LT |
1 | /*****************************************************************************/ |
2 | /* | |
3 | * moxa.c -- MOXA Intellio family multiport serial driver. | |
4 | * | |
5 | * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw). | |
6 | * | |
7 | * This code is loosely based on the Linux serial driver, written by | |
8 | * Linus Torvalds, Theodore T'so and others. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
1da177e4 LT |
14 | */ |
15 | ||
16 | /* | |
17 | * MOXA Intellio Series Driver | |
18 | * for : LINUX | |
19 | * date : 1999/1/7 | |
20 | * version : 5.1 | |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | #include <linux/types.h> | |
25 | #include <linux/mm.h> | |
26 | #include <linux/ioport.h> | |
27 | #include <linux/errno.h> | |
28 | #include <linux/signal.h> | |
29 | #include <linux/sched.h> | |
30 | #include <linux/timer.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/tty.h> | |
33 | #include <linux/tty_flip.h> | |
34 | #include <linux/major.h> | |
35 | #include <linux/string.h> | |
36 | #include <linux/fcntl.h> | |
37 | #include <linux/ptrace.h> | |
38 | #include <linux/serial.h> | |
39 | #include <linux/tty_driver.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/pci.h> | |
42 | #include <linux/init.h> | |
43 | #include <linux/bitops.h> | |
95e07914 | 44 | #include <linux/completion.h> |
1da177e4 LT |
45 | |
46 | #include <asm/system.h> | |
47 | #include <asm/io.h> | |
48 | #include <asm/uaccess.h> | |
49 | ||
11324edd | 50 | #define MOXA_VERSION "5.1k" |
1da177e4 | 51 | |
11324edd JS |
52 | #define MOXAMAJOR 172 |
53 | #define MOXACUMAJOR 173 | |
1da177e4 | 54 | |
11324edd | 55 | #define MAX_BOARDS 4 /* Don't change this value */ |
1da177e4 | 56 | #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ |
11324edd | 57 | #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) |
1da177e4 LT |
58 | |
59 | /* | |
60 | * Define the Moxa PCI vendor and device IDs. | |
61 | */ | |
11324edd JS |
62 | #define MOXA_BUS_TYPE_ISA 0 |
63 | #define MOXA_BUS_TYPE_PCI 1 | |
1da177e4 | 64 | |
1da177e4 LT |
65 | enum { |
66 | MOXA_BOARD_C218_PCI = 1, | |
67 | MOXA_BOARD_C218_ISA, | |
68 | MOXA_BOARD_C320_PCI, | |
69 | MOXA_BOARD_C320_ISA, | |
70 | MOXA_BOARD_CP204J, | |
71 | }; | |
72 | ||
73 | static char *moxa_brdname[] = | |
74 | { | |
75 | "C218 Turbo PCI series", | |
76 | "C218 Turbo ISA series", | |
77 | "C320 Turbo PCI series", | |
78 | "C320 Turbo ISA series", | |
79 | "CP-204J series", | |
80 | }; | |
81 | ||
82 | #ifdef CONFIG_PCI | |
83 | static struct pci_device_id moxa_pcibrds[] = { | |
5ebb4078 JS |
84 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), |
85 | .driver_data = MOXA_BOARD_C218_PCI }, | |
86 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), | |
87 | .driver_data = MOXA_BOARD_C320_PCI }, | |
88 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), | |
89 | .driver_data = MOXA_BOARD_CP204J }, | |
1da177e4 LT |
90 | { 0 } |
91 | }; | |
92 | MODULE_DEVICE_TABLE(pci, moxa_pcibrds); | |
93 | #endif /* CONFIG_PCI */ | |
94 | ||
9dff89cd | 95 | struct moxa_isa_board_conf { |
1da177e4 LT |
96 | int boardType; |
97 | int numPorts; | |
98 | unsigned long baseAddr; | |
9dff89cd | 99 | }; |
1da177e4 | 100 | |
9dff89cd | 101 | static struct moxa_isa_board_conf moxa_isa_boards[] = |
1da177e4 LT |
102 | { |
103 | /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */ | |
104 | }; | |
105 | ||
8f8ecbad | 106 | static struct moxa_board_conf { |
1da177e4 LT |
107 | int boardType; |
108 | int numPorts; | |
109 | unsigned long baseAddr; | |
110 | int busType; | |
8f8ecbad JS |
111 | |
112 | int loadstat; | |
113 | ||
114 | void __iomem *basemem; | |
115 | void __iomem *intNdx; | |
116 | void __iomem *intPend; | |
117 | void __iomem *intTable; | |
118 | } moxa_boards[MAX_BOARDS]; | |
119 | ||
120 | struct mxser_mstatus { | |
121 | tcflag_t cflag; | |
122 | int cts; | |
123 | int dsr; | |
124 | int ri; | |
125 | int dcd; | |
9dff89cd | 126 | }; |
1da177e4 | 127 | |
8f8ecbad JS |
128 | struct moxaq_str { |
129 | int inq; | |
130 | int outq; | |
131 | }; | |
1da177e4 | 132 | |
8f8ecbad | 133 | struct moxa_port { |
1da177e4 LT |
134 | int type; |
135 | int port; | |
136 | int close_delay; | |
137 | unsigned short closing_wait; | |
138 | int count; | |
139 | int blocked_open; | |
140 | long event; /* long req'd for set_bit --RR */ | |
141 | int asyncflags; | |
142 | unsigned long statusflags; | |
143 | struct tty_struct *tty; | |
144 | int cflag; | |
145 | wait_queue_head_t open_wait; | |
95e07914 | 146 | struct completion close_wait; |
1da177e4 | 147 | |
8f8ecbad | 148 | struct timer_list emptyTimer; |
1da177e4 | 149 | |
8f8ecbad JS |
150 | char chkPort; |
151 | char lineCtrl; | |
152 | void __iomem *tableAddr; | |
153 | long curBaud; | |
154 | char DCDState; | |
155 | char lowChkFlag; | |
156 | ||
157 | ushort breakCnt; | |
158 | }; | |
1da177e4 LT |
159 | |
160 | /* statusflags */ | |
161 | #define TXSTOPPED 0x1 | |
162 | #define LOWWAIT 0x2 | |
163 | #define EMPTYWAIT 0x4 | |
164 | #define THROTTLE 0x8 | |
165 | ||
1da177e4 LT |
166 | #define SERIAL_DO_RESTART |
167 | ||
1da177e4 LT |
168 | #define WAKEUP_CHARS 256 |
169 | ||
1da177e4 LT |
170 | static int ttymajor = MOXAMAJOR; |
171 | /* Variables for insmod */ | |
172 | #ifdef MODULE | |
9fa372a8 JS |
173 | static int baseaddr[4]; |
174 | static int type[4]; | |
175 | static int numports[4]; | |
1da177e4 LT |
176 | #endif |
177 | ||
178 | MODULE_AUTHOR("William Chen"); | |
179 | MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); | |
180 | MODULE_LICENSE("GPL"); | |
181 | #ifdef MODULE | |
182 | module_param_array(type, int, NULL, 0); | |
183 | module_param_array(baseaddr, int, NULL, 0); | |
184 | module_param_array(numports, int, NULL, 0); | |
185 | #endif | |
186 | module_param(ttymajor, int, 0); | |
1da177e4 | 187 | |
1da177e4 LT |
188 | /* |
189 | * static functions: | |
190 | */ | |
1da177e4 LT |
191 | static int moxa_open(struct tty_struct *, struct file *); |
192 | static void moxa_close(struct tty_struct *, struct file *); | |
193 | static int moxa_write(struct tty_struct *, const unsigned char *, int); | |
194 | static int moxa_write_room(struct tty_struct *); | |
195 | static void moxa_flush_buffer(struct tty_struct *); | |
196 | static int moxa_chars_in_buffer(struct tty_struct *); | |
197 | static void moxa_flush_chars(struct tty_struct *); | |
198 | static void moxa_put_char(struct tty_struct *, unsigned char); | |
199 | static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long); | |
200 | static void moxa_throttle(struct tty_struct *); | |
201 | static void moxa_unthrottle(struct tty_struct *); | |
606d099c | 202 | static void moxa_set_termios(struct tty_struct *, struct ktermios *); |
1da177e4 LT |
203 | static void moxa_stop(struct tty_struct *); |
204 | static void moxa_start(struct tty_struct *); | |
205 | static void moxa_hangup(struct tty_struct *); | |
206 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file); | |
207 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
208 | unsigned int set, unsigned int clear); | |
209 | static void moxa_poll(unsigned long); | |
db1acaa6 | 210 | static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); |
6f56b658 | 211 | static int moxa_block_till_ready(struct tty_struct *, struct file *, |
8f8ecbad | 212 | struct moxa_port *); |
6f56b658 JS |
213 | static void moxa_setup_empty_event(struct tty_struct *); |
214 | static void moxa_check_xmit_empty(unsigned long); | |
215 | static void moxa_shut_down(struct moxa_port *); | |
216 | static void moxa_receive_data(struct moxa_port *); | |
1da177e4 LT |
217 | /* |
218 | * moxa board interface functions: | |
219 | */ | |
220 | static void MoxaDriverInit(void); | |
221 | static int MoxaDriverIoctl(unsigned int, unsigned long, int); | |
222 | static int MoxaDriverPoll(void); | |
223 | static int MoxaPortsOfCard(int); | |
224 | static int MoxaPortIsValid(int); | |
225 | static void MoxaPortEnable(int); | |
226 | static void MoxaPortDisable(int); | |
227 | static long MoxaPortGetMaxBaud(int); | |
228 | static long MoxaPortSetBaud(int, long); | |
606d099c | 229 | static int MoxaPortSetTermio(int, struct ktermios *, speed_t); |
1da177e4 LT |
230 | static int MoxaPortGetLineOut(int, int *, int *); |
231 | static void MoxaPortLineCtrl(int, int, int); | |
232 | static void MoxaPortFlowCtrl(int, int, int, int, int, int); | |
233 | static int MoxaPortLineStatus(int); | |
234 | static int MoxaPortDCDChange(int); | |
235 | static int MoxaPortDCDON(int); | |
236 | static void MoxaPortFlushData(int, int); | |
237 | static int MoxaPortWriteData(int, unsigned char *, int); | |
33f0f88f | 238 | static int MoxaPortReadData(int, struct tty_struct *tty); |
1da177e4 LT |
239 | static int MoxaPortTxQueue(int); |
240 | static int MoxaPortRxQueue(int); | |
241 | static int MoxaPortTxFree(int); | |
242 | static void MoxaPortTxDisable(int); | |
243 | static void MoxaPortTxEnable(int); | |
244 | static int MoxaPortResetBrkCnt(int); | |
245 | static void MoxaPortSendBreak(int, int); | |
8f8ecbad JS |
246 | static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); |
247 | static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); | |
1da177e4 LT |
248 | static void MoxaSetFifo(int port, int enable); |
249 | ||
b68e31d0 | 250 | static const struct tty_operations moxa_ops = { |
1da177e4 LT |
251 | .open = moxa_open, |
252 | .close = moxa_close, | |
253 | .write = moxa_write, | |
254 | .write_room = moxa_write_room, | |
255 | .flush_buffer = moxa_flush_buffer, | |
256 | .chars_in_buffer = moxa_chars_in_buffer, | |
257 | .flush_chars = moxa_flush_chars, | |
258 | .put_char = moxa_put_char, | |
259 | .ioctl = moxa_ioctl, | |
260 | .throttle = moxa_throttle, | |
261 | .unthrottle = moxa_unthrottle, | |
262 | .set_termios = moxa_set_termios, | |
263 | .stop = moxa_stop, | |
264 | .start = moxa_start, | |
265 | .hangup = moxa_hangup, | |
266 | .tiocmget = moxa_tiocmget, | |
267 | .tiocmset = moxa_tiocmset, | |
268 | }; | |
269 | ||
aa7e5221 | 270 | static struct tty_driver *moxaDriver; |
8f8ecbad | 271 | static struct moxa_port moxa_ports[MAX_PORTS]; |
aa7e5221 | 272 | static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); |
34af946a | 273 | static DEFINE_SPINLOCK(moxa_lock); |
33f0f88f | 274 | |
1da177e4 | 275 | #ifdef CONFIG_PCI |
9cde5bf0 JS |
276 | static int __devinit moxa_pci_probe(struct pci_dev *pdev, |
277 | const struct pci_device_id *ent) | |
1da177e4 | 278 | { |
9cde5bf0 JS |
279 | struct moxa_board_conf *board; |
280 | unsigned int i; | |
281 | int board_type = ent->driver_data; | |
282 | int retval; | |
283 | ||
284 | retval = pci_enable_device(pdev); | |
7aeb95da JS |
285 | if (retval) { |
286 | dev_err(&pdev->dev, "can't enable pci device\n"); | |
9cde5bf0 | 287 | goto err; |
7aeb95da | 288 | } |
9cde5bf0 JS |
289 | |
290 | for (i = 0; i < MAX_BOARDS; i++) | |
291 | if (moxa_boards[i].basemem == NULL) | |
292 | break; | |
293 | ||
294 | retval = -ENODEV; | |
295 | if (i >= MAX_BOARDS) { | |
7aeb95da | 296 | dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " |
9cde5bf0 JS |
297 | "found. Board is ignored.\n", MAX_BOARDS); |
298 | goto err; | |
299 | } | |
300 | ||
301 | board = &moxa_boards[i]; | |
302 | board->basemem = pci_iomap(pdev, 2, 0x4000); | |
7aeb95da JS |
303 | if (board->basemem == NULL) { |
304 | dev_err(&pdev->dev, "can't remap io space 2\n"); | |
9cde5bf0 | 305 | goto err; |
7aeb95da | 306 | } |
9cde5bf0 | 307 | |
1da177e4 LT |
308 | board->boardType = board_type; |
309 | switch (board_type) { | |
310 | case MOXA_BOARD_C218_ISA: | |
311 | case MOXA_BOARD_C218_PCI: | |
312 | board->numPorts = 8; | |
313 | break; | |
314 | ||
315 | case MOXA_BOARD_CP204J: | |
316 | board->numPorts = 4; | |
317 | break; | |
318 | default: | |
319 | board->numPorts = 0; | |
320 | break; | |
321 | } | |
322 | board->busType = MOXA_BUS_TYPE_PCI; | |
a784bf7c | 323 | |
9cde5bf0 | 324 | pci_set_drvdata(pdev, board); |
1da177e4 LT |
325 | |
326 | return (0); | |
9cde5bf0 JS |
327 | err: |
328 | return retval; | |
329 | } | |
330 | ||
331 | static void __devexit moxa_pci_remove(struct pci_dev *pdev) | |
332 | { | |
333 | struct moxa_board_conf *brd = pci_get_drvdata(pdev); | |
334 | ||
335 | pci_iounmap(pdev, brd->basemem); | |
336 | brd->basemem = NULL; | |
1da177e4 | 337 | } |
a784bf7c JS |
338 | |
339 | static struct pci_driver moxa_pci_driver = { | |
340 | .name = "moxa", | |
341 | .id_table = moxa_pcibrds, | |
342 | .probe = moxa_pci_probe, | |
343 | .remove = __devexit_p(moxa_pci_remove) | |
344 | }; | |
1da177e4 LT |
345 | #endif /* CONFIG_PCI */ |
346 | ||
347 | static int __init moxa_init(void) | |
348 | { | |
a784bf7c | 349 | int i, numBoards, retval = 0; |
8f8ecbad | 350 | struct moxa_port *ch; |
1da177e4 | 351 | |
7aeb95da JS |
352 | printk(KERN_INFO "MOXA Intellio family driver version %s\n", |
353 | MOXA_VERSION); | |
1da177e4 LT |
354 | moxaDriver = alloc_tty_driver(MAX_PORTS + 1); |
355 | if (!moxaDriver) | |
356 | return -ENOMEM; | |
357 | ||
1da177e4 | 358 | moxaDriver->owner = THIS_MODULE; |
9b4e3b13 | 359 | moxaDriver->name = "ttyMX"; |
1da177e4 LT |
360 | moxaDriver->major = ttymajor; |
361 | moxaDriver->minor_start = 0; | |
362 | moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; | |
363 | moxaDriver->subtype = SERIAL_TYPE_NORMAL; | |
364 | moxaDriver->init_termios = tty_std_termios; | |
1da177e4 | 365 | moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
606d099c AC |
366 | moxaDriver->init_termios.c_ispeed = 9600; |
367 | moxaDriver->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
368 | moxaDriver->flags = TTY_DRIVER_REAL_RAW; |
369 | tty_set_operations(moxaDriver, &moxa_ops); | |
370 | ||
8f8ecbad | 371 | for (i = 0, ch = moxa_ports; i < MAX_PORTS; i++, ch++) { |
1da177e4 LT |
372 | ch->type = PORT_16550A; |
373 | ch->port = i; | |
1da177e4 LT |
374 | ch->close_delay = 5 * HZ / 10; |
375 | ch->closing_wait = 30 * HZ; | |
1da177e4 LT |
376 | ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
377 | init_waitqueue_head(&ch->open_wait); | |
95e07914 | 378 | init_completion(&ch->close_wait); |
8f8ecbad | 379 | |
6f56b658 | 380 | setup_timer(&ch->emptyTimer, moxa_check_xmit_empty, |
8f8ecbad | 381 | (unsigned long)ch); |
1da177e4 LT |
382 | } |
383 | ||
7aeb95da | 384 | pr_debug("Moxa tty devices major number = %d\n", ttymajor); |
1da177e4 LT |
385 | |
386 | if (tty_register_driver(moxaDriver)) { | |
387 | printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n"); | |
388 | put_tty_driver(moxaDriver); | |
389 | return -1; | |
390 | } | |
1da177e4 | 391 | |
aa7e5221 | 392 | mod_timer(&moxaTimer, jiffies + HZ / 50); |
1da177e4 LT |
393 | |
394 | /* Find the boards defined in source code */ | |
395 | numBoards = 0; | |
396 | for (i = 0; i < MAX_BOARDS; i++) { | |
397 | if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) || | |
398 | (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) { | |
399 | moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType; | |
400 | if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) | |
401 | moxa_boards[numBoards].numPorts = 8; | |
402 | else | |
403 | moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts; | |
404 | moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA; | |
405 | moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr; | |
7aeb95da JS |
406 | pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", |
407 | numBoards + 1, | |
408 | moxa_brdname[moxa_boards[numBoards].boardType-1], | |
409 | moxa_boards[numBoards].baseAddr); | |
1da177e4 LT |
410 | numBoards++; |
411 | } | |
412 | } | |
413 | /* Find the boards defined form module args. */ | |
414 | #ifdef MODULE | |
415 | for (i = 0; i < MAX_BOARDS; i++) { | |
416 | if ((type[i] == MOXA_BOARD_C218_ISA) || | |
417 | (type[i] == MOXA_BOARD_C320_ISA)) { | |
7aeb95da JS |
418 | pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", |
419 | numBoards + 1, moxa_brdname[type[i] - 1], | |
420 | (unsigned long)baseaddr[i]); | |
1da177e4 | 421 | if (numBoards >= MAX_BOARDS) { |
7aeb95da JS |
422 | printk(KERN_WARNING "More than %d MOXA " |
423 | "Intellio family boards found. Board " | |
424 | "is ignored.\n", MAX_BOARDS); | |
1da177e4 LT |
425 | continue; |
426 | } | |
427 | moxa_boards[numBoards].boardType = type[i]; | |
428 | if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) | |
429 | moxa_boards[numBoards].numPorts = 8; | |
430 | else | |
431 | moxa_boards[numBoards].numPorts = numports[i]; | |
432 | moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA; | |
433 | moxa_boards[numBoards].baseAddr = baseaddr[i]; | |
434 | numBoards++; | |
435 | } | |
436 | } | |
437 | #endif | |
a784bf7c | 438 | |
1da177e4 | 439 | #ifdef CONFIG_PCI |
a784bf7c JS |
440 | retval = pci_register_driver(&moxa_pci_driver); |
441 | if (retval) { | |
442 | printk(KERN_ERR "Can't register moxa pci driver!\n"); | |
443 | if (numBoards) | |
444 | retval = 0; | |
1da177e4 LT |
445 | } |
446 | #endif | |
a784bf7c | 447 | |
1da177e4 | 448 | for (i = 0; i < numBoards; i++) { |
8f8ecbad JS |
449 | moxa_boards[i].basemem = ioremap(moxa_boards[i].baseAddr, |
450 | 0x4000); | |
1da177e4 LT |
451 | } |
452 | ||
a784bf7c | 453 | return retval; |
1da177e4 LT |
454 | } |
455 | ||
456 | static void __exit moxa_exit(void) | |
457 | { | |
458 | int i; | |
459 | ||
c251ae0d | 460 | del_timer_sync(&moxaTimer); |
1da177e4 LT |
461 | |
462 | for (i = 0; i < MAX_PORTS; i++) | |
8f8ecbad | 463 | del_timer_sync(&moxa_ports[i].emptyTimer); |
1da177e4 LT |
464 | |
465 | if (tty_unregister_driver(moxaDriver)) | |
7aeb95da JS |
466 | printk(KERN_ERR "Couldn't unregister MOXA Intellio family " |
467 | "serial driver\n"); | |
1da177e4 | 468 | put_tty_driver(moxaDriver); |
86fbf148 | 469 | |
9cde5bf0 | 470 | #ifdef CONFIG_PCI |
a784bf7c | 471 | pci_unregister_driver(&moxa_pci_driver); |
9cde5bf0 | 472 | #endif |
a784bf7c JS |
473 | |
474 | for (i = 0; i < MAX_BOARDS; i++) | |
8f8ecbad JS |
475 | if (moxa_boards[i].basemem) |
476 | iounmap(moxa_boards[i].basemem); | |
1da177e4 LT |
477 | } |
478 | ||
479 | module_init(moxa_init); | |
480 | module_exit(moxa_exit); | |
481 | ||
1da177e4 LT |
482 | static int moxa_open(struct tty_struct *tty, struct file *filp) |
483 | { | |
8f8ecbad | 484 | struct moxa_port *ch; |
1da177e4 LT |
485 | int port; |
486 | int retval; | |
1da177e4 | 487 | |
11324edd | 488 | port = tty->index; |
1da177e4 LT |
489 | if (port == MAX_PORTS) { |
490 | return (0); | |
491 | } | |
492 | if (!MoxaPortIsValid(port)) { | |
493 | tty->driver_data = NULL; | |
494 | return (-ENODEV); | |
495 | } | |
1da177e4 | 496 | |
8f8ecbad | 497 | ch = &moxa_ports[port]; |
1da177e4 LT |
498 | ch->count++; |
499 | tty->driver_data = ch; | |
500 | ch->tty = tty; | |
501 | if (!(ch->asyncflags & ASYNC_INITIALIZED)) { | |
502 | ch->statusflags = 0; | |
db1acaa6 | 503 | moxa_set_tty_param(tty, tty->termios); |
1da177e4 LT |
504 | MoxaPortLineCtrl(ch->port, 1, 1); |
505 | MoxaPortEnable(ch->port); | |
506 | ch->asyncflags |= ASYNC_INITIALIZED; | |
507 | } | |
6f56b658 | 508 | retval = moxa_block_till_ready(tty, filp, ch); |
1da177e4 LT |
509 | |
510 | moxa_unthrottle(tty); | |
511 | ||
512 | if (ch->type == PORT_16550A) { | |
513 | MoxaSetFifo(ch->port, 1); | |
514 | } else { | |
515 | MoxaSetFifo(ch->port, 0); | |
516 | } | |
517 | ||
518 | return (retval); | |
519 | } | |
520 | ||
521 | static void moxa_close(struct tty_struct *tty, struct file *filp) | |
522 | { | |
8f8ecbad | 523 | struct moxa_port *ch; |
1da177e4 LT |
524 | int port; |
525 | ||
11324edd | 526 | port = tty->index; |
1da177e4 LT |
527 | if (port == MAX_PORTS) { |
528 | return; | |
529 | } | |
530 | if (!MoxaPortIsValid(port)) { | |
7aeb95da | 531 | pr_debug("Invalid portno in moxa_close\n"); |
1da177e4 LT |
532 | tty->driver_data = NULL; |
533 | return; | |
534 | } | |
535 | if (tty->driver_data == NULL) { | |
536 | return; | |
537 | } | |
538 | if (tty_hung_up_p(filp)) { | |
539 | return; | |
540 | } | |
8f8ecbad | 541 | ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
542 | |
543 | if ((tty->count == 1) && (ch->count != 1)) { | |
7aeb95da JS |
544 | printk(KERN_WARNING "moxa_close: bad serial port count; " |
545 | "tty->count is 1, ch->count is %d\n", ch->count); | |
1da177e4 LT |
546 | ch->count = 1; |
547 | } | |
548 | if (--ch->count < 0) { | |
7aeb95da JS |
549 | printk(KERN_WARNING "moxa_close: bad serial port count, " |
550 | "device=%s\n", tty->name); | |
1da177e4 LT |
551 | ch->count = 0; |
552 | } | |
553 | if (ch->count) { | |
554 | return; | |
555 | } | |
556 | ch->asyncflags |= ASYNC_CLOSING; | |
557 | ||
558 | ch->cflag = tty->termios->c_cflag; | |
559 | if (ch->asyncflags & ASYNC_INITIALIZED) { | |
6f56b658 | 560 | moxa_setup_empty_event(tty); |
1da177e4 | 561 | tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ |
8f8ecbad | 562 | del_timer_sync(&moxa_ports[ch->port].emptyTimer); |
1da177e4 | 563 | } |
6f56b658 | 564 | moxa_shut_down(ch); |
1da177e4 LT |
565 | MoxaPortFlushData(port, 2); |
566 | ||
567 | if (tty->driver->flush_buffer) | |
568 | tty->driver->flush_buffer(tty); | |
569 | tty_ldisc_flush(tty); | |
570 | ||
571 | tty->closing = 0; | |
572 | ch->event = 0; | |
573 | ch->tty = NULL; | |
574 | if (ch->blocked_open) { | |
575 | if (ch->close_delay) { | |
576 | msleep_interruptible(jiffies_to_msecs(ch->close_delay)); | |
577 | } | |
578 | wake_up_interruptible(&ch->open_wait); | |
579 | } | |
580 | ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); | |
95e07914 | 581 | complete_all(&ch->close_wait); |
1da177e4 LT |
582 | } |
583 | ||
584 | static int moxa_write(struct tty_struct *tty, | |
585 | const unsigned char *buf, int count) | |
586 | { | |
8f8ecbad | 587 | struct moxa_port *ch; |
1da177e4 LT |
588 | int len, port; |
589 | unsigned long flags; | |
590 | ||
8f8ecbad | 591 | ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
592 | if (ch == NULL) |
593 | return (0); | |
594 | port = ch->port; | |
33f0f88f AC |
595 | |
596 | spin_lock_irqsave(&moxa_lock, flags); | |
1da177e4 | 597 | len = MoxaPortWriteData(port, (unsigned char *) buf, count); |
33f0f88f | 598 | spin_unlock_irqrestore(&moxa_lock, flags); |
1da177e4 LT |
599 | |
600 | /********************************************* | |
601 | if ( !(ch->statusflags & LOWWAIT) && | |
602 | ((len != count) || (MoxaPortTxFree(port) <= 100)) ) | |
603 | ************************************************/ | |
604 | ch->statusflags |= LOWWAIT; | |
605 | return (len); | |
606 | } | |
607 | ||
608 | static int moxa_write_room(struct tty_struct *tty) | |
609 | { | |
8f8ecbad | 610 | struct moxa_port *ch; |
1da177e4 LT |
611 | |
612 | if (tty->stopped) | |
613 | return (0); | |
8f8ecbad | 614 | ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
615 | if (ch == NULL) |
616 | return (0); | |
617 | return (MoxaPortTxFree(ch->port)); | |
618 | } | |
619 | ||
620 | static void moxa_flush_buffer(struct tty_struct *tty) | |
621 | { | |
8f8ecbad | 622 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
623 | |
624 | if (ch == NULL) | |
625 | return; | |
626 | MoxaPortFlushData(ch->port, 1); | |
627 | tty_wakeup(tty); | |
628 | } | |
629 | ||
630 | static int moxa_chars_in_buffer(struct tty_struct *tty) | |
631 | { | |
632 | int chars; | |
8f8ecbad | 633 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
634 | |
635 | /* | |
636 | * Sigh...I have to check if driver_data is NULL here, because | |
637 | * if an open() fails, the TTY subsystem eventually calls | |
638 | * tty_wait_until_sent(), which calls the driver's chars_in_buffer() | |
639 | * routine. And since the open() failed, we return 0 here. TDJ | |
640 | */ | |
641 | if (ch == NULL) | |
642 | return (0); | |
643 | chars = MoxaPortTxQueue(ch->port); | |
644 | if (chars) { | |
645 | /* | |
646 | * Make it possible to wakeup anything waiting for output | |
647 | * in tty_ioctl.c, etc. | |
648 | */ | |
649 | if (!(ch->statusflags & EMPTYWAIT)) | |
6f56b658 | 650 | moxa_setup_empty_event(tty); |
1da177e4 LT |
651 | } |
652 | return (chars); | |
653 | } | |
654 | ||
655 | static void moxa_flush_chars(struct tty_struct *tty) | |
656 | { | |
657 | /* | |
658 | * Don't think I need this, because this is called to empty the TX | |
659 | * buffer for the 16450, 16550, etc. | |
660 | */ | |
661 | } | |
662 | ||
663 | static void moxa_put_char(struct tty_struct *tty, unsigned char c) | |
664 | { | |
8f8ecbad | 665 | struct moxa_port *ch; |
1da177e4 LT |
666 | int port; |
667 | unsigned long flags; | |
668 | ||
8f8ecbad | 669 | ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
670 | if (ch == NULL) |
671 | return; | |
672 | port = ch->port; | |
33f0f88f | 673 | spin_lock_irqsave(&moxa_lock, flags); |
f204d267 | 674 | MoxaPortWriteData(port, &c, 1); |
33f0f88f | 675 | spin_unlock_irqrestore(&moxa_lock, flags); |
1da177e4 LT |
676 | /************************************************ |
677 | if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) ) | |
678 | *************************************************/ | |
679 | ch->statusflags |= LOWWAIT; | |
680 | } | |
681 | ||
682 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file) | |
683 | { | |
8f8ecbad | 684 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
685 | int port; |
686 | int flag = 0, dtr, rts; | |
687 | ||
11324edd | 688 | port = tty->index; |
1da177e4 LT |
689 | if ((port != MAX_PORTS) && (!ch)) |
690 | return (-EINVAL); | |
691 | ||
692 | MoxaPortGetLineOut(ch->port, &dtr, &rts); | |
693 | if (dtr) | |
694 | flag |= TIOCM_DTR; | |
695 | if (rts) | |
696 | flag |= TIOCM_RTS; | |
697 | dtr = MoxaPortLineStatus(ch->port); | |
698 | if (dtr & 1) | |
699 | flag |= TIOCM_CTS; | |
700 | if (dtr & 2) | |
701 | flag |= TIOCM_DSR; | |
702 | if (dtr & 4) | |
703 | flag |= TIOCM_CD; | |
704 | return flag; | |
705 | } | |
706 | ||
707 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
708 | unsigned int set, unsigned int clear) | |
709 | { | |
8f8ecbad | 710 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
711 | int port; |
712 | int dtr, rts; | |
713 | ||
11324edd | 714 | port = tty->index; |
1da177e4 LT |
715 | if ((port != MAX_PORTS) && (!ch)) |
716 | return (-EINVAL); | |
717 | ||
718 | MoxaPortGetLineOut(ch->port, &dtr, &rts); | |
719 | if (set & TIOCM_RTS) | |
720 | rts = 1; | |
721 | if (set & TIOCM_DTR) | |
722 | dtr = 1; | |
723 | if (clear & TIOCM_RTS) | |
724 | rts = 0; | |
725 | if (clear & TIOCM_DTR) | |
726 | dtr = 0; | |
727 | MoxaPortLineCtrl(ch->port, dtr, rts); | |
728 | return 0; | |
729 | } | |
730 | ||
731 | static int moxa_ioctl(struct tty_struct *tty, struct file *file, | |
732 | unsigned int cmd, unsigned long arg) | |
733 | { | |
8f8ecbad | 734 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
735 | register int port; |
736 | void __user *argp = (void __user *)arg; | |
737 | int retval; | |
738 | ||
11324edd | 739 | port = tty->index; |
1da177e4 LT |
740 | if ((port != MAX_PORTS) && (!ch)) |
741 | return (-EINVAL); | |
742 | ||
743 | switch (cmd) { | |
744 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | |
745 | retval = tty_check_change(tty); | |
746 | if (retval) | |
747 | return (retval); | |
6f56b658 | 748 | moxa_setup_empty_event(tty); |
1da177e4 LT |
749 | tty_wait_until_sent(tty, 0); |
750 | if (!arg) | |
751 | MoxaPortSendBreak(ch->port, 0); | |
752 | return (0); | |
753 | case TCSBRKP: /* support for POSIX tcsendbreak() */ | |
754 | retval = tty_check_change(tty); | |
755 | if (retval) | |
756 | return (retval); | |
6f56b658 | 757 | moxa_setup_empty_event(tty); |
1da177e4 LT |
758 | tty_wait_until_sent(tty, 0); |
759 | MoxaPortSendBreak(ch->port, arg); | |
760 | return (0); | |
761 | case TIOCGSOFTCAR: | |
762 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp); | |
763 | case TIOCSSOFTCAR: | |
764 | if(get_user(retval, (unsigned long __user *) argp)) | |
765 | return -EFAULT; | |
766 | arg = retval; | |
767 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | | |
768 | (arg ? CLOCAL : 0)); | |
769 | if (C_CLOCAL(tty)) | |
770 | ch->asyncflags &= ~ASYNC_CHECK_CD; | |
771 | else | |
772 | ch->asyncflags |= ASYNC_CHECK_CD; | |
773 | return (0); | |
774 | case TIOCGSERIAL: | |
775 | return moxa_get_serial_info(ch, argp); | |
776 | ||
777 | case TIOCSSERIAL: | |
778 | return moxa_set_serial_info(ch, argp); | |
779 | default: | |
780 | retval = MoxaDriverIoctl(cmd, arg, port); | |
781 | } | |
782 | return (retval); | |
783 | } | |
784 | ||
785 | static void moxa_throttle(struct tty_struct *tty) | |
786 | { | |
8f8ecbad | 787 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
788 | |
789 | ch->statusflags |= THROTTLE; | |
790 | } | |
791 | ||
792 | static void moxa_unthrottle(struct tty_struct *tty) | |
793 | { | |
8f8ecbad | 794 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
795 | |
796 | ch->statusflags &= ~THROTTLE; | |
797 | } | |
798 | ||
799 | static void moxa_set_termios(struct tty_struct *tty, | |
606d099c | 800 | struct ktermios *old_termios) |
1da177e4 | 801 | { |
8f8ecbad | 802 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
803 | |
804 | if (ch == NULL) | |
805 | return; | |
db1acaa6 | 806 | moxa_set_tty_param(tty, old_termios); |
1da177e4 LT |
807 | if (!(old_termios->c_cflag & CLOCAL) && |
808 | (tty->termios->c_cflag & CLOCAL)) | |
809 | wake_up_interruptible(&ch->open_wait); | |
810 | } | |
811 | ||
812 | static void moxa_stop(struct tty_struct *tty) | |
813 | { | |
8f8ecbad | 814 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
815 | |
816 | if (ch == NULL) | |
817 | return; | |
818 | MoxaPortTxDisable(ch->port); | |
819 | ch->statusflags |= TXSTOPPED; | |
820 | } | |
821 | ||
822 | ||
823 | static void moxa_start(struct tty_struct *tty) | |
824 | { | |
8f8ecbad | 825 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
826 | |
827 | if (ch == NULL) | |
828 | return; | |
829 | ||
830 | if (!(ch->statusflags & TXSTOPPED)) | |
831 | return; | |
832 | ||
833 | MoxaPortTxEnable(ch->port); | |
834 | ch->statusflags &= ~TXSTOPPED; | |
835 | } | |
836 | ||
837 | static void moxa_hangup(struct tty_struct *tty) | |
838 | { | |
8f8ecbad | 839 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
840 | |
841 | moxa_flush_buffer(tty); | |
6f56b658 | 842 | moxa_shut_down(ch); |
1da177e4 LT |
843 | ch->event = 0; |
844 | ch->count = 0; | |
845 | ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; | |
846 | ch->tty = NULL; | |
847 | wake_up_interruptible(&ch->open_wait); | |
848 | } | |
849 | ||
850 | static void moxa_poll(unsigned long ignored) | |
851 | { | |
852 | register int card; | |
8f8ecbad | 853 | struct moxa_port *ch; |
1da177e4 LT |
854 | struct tty_struct *tp; |
855 | int i, ports; | |
856 | ||
1da177e4 LT |
857 | del_timer(&moxaTimer); |
858 | ||
859 | if (MoxaDriverPoll() < 0) { | |
aa7e5221 | 860 | mod_timer(&moxaTimer, jiffies + HZ / 50); |
1da177e4 LT |
861 | return; |
862 | } | |
863 | for (card = 0; card < MAX_BOARDS; card++) { | |
864 | if ((ports = MoxaPortsOfCard(card)) <= 0) | |
865 | continue; | |
8f8ecbad | 866 | ch = &moxa_ports[card * MAX_PORTS_PER_BOARD]; |
1da177e4 LT |
867 | for (i = 0; i < ports; i++, ch++) { |
868 | if ((ch->asyncflags & ASYNC_INITIALIZED) == 0) | |
869 | continue; | |
870 | if (!(ch->statusflags & THROTTLE) && | |
871 | (MoxaPortRxQueue(ch->port) > 0)) | |
6f56b658 | 872 | moxa_receive_data(ch); |
1da177e4 LT |
873 | if ((tp = ch->tty) == 0) |
874 | continue; | |
875 | if (ch->statusflags & LOWWAIT) { | |
876 | if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) { | |
877 | if (!tp->stopped) { | |
878 | ch->statusflags &= ~LOWWAIT; | |
879 | tty_wakeup(tp); | |
880 | } | |
881 | } | |
882 | } | |
883 | if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) { | |
884 | tty_insert_flip_char(tp, 0, TTY_BREAK); | |
885 | tty_schedule_flip(tp); | |
886 | } | |
887 | if (MoxaPortDCDChange(ch->port)) { | |
888 | if (ch->asyncflags & ASYNC_CHECK_CD) { | |
889 | if (MoxaPortDCDON(ch->port)) | |
890 | wake_up_interruptible(&ch->open_wait); | |
891 | else { | |
ba196df3 JS |
892 | tty_hangup(tp); |
893 | wake_up_interruptible(&ch->open_wait); | |
894 | ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; | |
1da177e4 LT |
895 | } |
896 | } | |
897 | } | |
898 | } | |
899 | } | |
900 | ||
aa7e5221 | 901 | mod_timer(&moxaTimer, jiffies + HZ / 50); |
1da177e4 LT |
902 | } |
903 | ||
904 | /******************************************************************************/ | |
905 | ||
db1acaa6 | 906 | static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 907 | { |
606d099c | 908 | register struct ktermios *ts; |
8f8ecbad | 909 | struct moxa_port *ch; |
db1acaa6 | 910 | int rts, cts, txflow, rxflow, xany, baud; |
1da177e4 | 911 | |
8f8ecbad | 912 | ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
913 | ts = tty->termios; |
914 | if (ts->c_cflag & CLOCAL) | |
915 | ch->asyncflags &= ~ASYNC_CHECK_CD; | |
916 | else | |
917 | ch->asyncflags |= ASYNC_CHECK_CD; | |
918 | rts = cts = txflow = rxflow = xany = 0; | |
919 | if (ts->c_cflag & CRTSCTS) | |
920 | rts = cts = 1; | |
921 | if (ts->c_iflag & IXON) | |
922 | txflow = 1; | |
923 | if (ts->c_iflag & IXOFF) | |
924 | rxflow = 1; | |
925 | if (ts->c_iflag & IXANY) | |
926 | xany = 1; | |
db1acaa6 AC |
927 | |
928 | /* Clear the features we don't support */ | |
929 | ts->c_cflag &= ~CMSPAR; | |
1da177e4 | 930 | MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany); |
db1acaa6 AC |
931 | baud = MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty)); |
932 | if (baud == -1) | |
933 | baud = tty_termios_baud_rate(old_termios); | |
934 | /* Not put the baud rate into the termios data */ | |
935 | tty_encode_baud_rate(tty, baud, baud); | |
1da177e4 LT |
936 | } |
937 | ||
6f56b658 | 938 | static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, |
8f8ecbad | 939 | struct moxa_port *ch) |
1da177e4 LT |
940 | { |
941 | DECLARE_WAITQUEUE(wait,current); | |
942 | unsigned long flags; | |
943 | int retval; | |
944 | int do_clocal = C_CLOCAL(tty); | |
945 | ||
946 | /* | |
947 | * If the device is in the middle of being closed, then block | |
948 | * until it's done, and then try again. | |
949 | */ | |
950 | if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) { | |
951 | if (ch->asyncflags & ASYNC_CLOSING) | |
95e07914 | 952 | wait_for_completion_interruptible(&ch->close_wait); |
1da177e4 LT |
953 | #ifdef SERIAL_DO_RESTART |
954 | if (ch->asyncflags & ASYNC_HUP_NOTIFY) | |
955 | return (-EAGAIN); | |
956 | else | |
957 | return (-ERESTARTSYS); | |
958 | #else | |
959 | return (-EAGAIN); | |
960 | #endif | |
961 | } | |
962 | /* | |
963 | * If non-blocking mode is set, then make the check up front | |
964 | * and then exit. | |
965 | */ | |
966 | if (filp->f_flags & O_NONBLOCK) { | |
967 | ch->asyncflags |= ASYNC_NORMAL_ACTIVE; | |
968 | return (0); | |
969 | } | |
970 | /* | |
971 | * Block waiting for the carrier detect and the line to become free | |
972 | */ | |
973 | retval = 0; | |
974 | add_wait_queue(&ch->open_wait, &wait); | |
7aeb95da JS |
975 | pr_debug("block_til_ready before block: ttys%d, count = %d\n", |
976 | ch->port, ch->count); | |
33f0f88f | 977 | spin_lock_irqsave(&moxa_lock, flags); |
1da177e4 LT |
978 | if (!tty_hung_up_p(filp)) |
979 | ch->count--; | |
1da177e4 | 980 | ch->blocked_open++; |
33f0f88f AC |
981 | spin_unlock_irqrestore(&moxa_lock, flags); |
982 | ||
1da177e4 LT |
983 | while (1) { |
984 | set_current_state(TASK_INTERRUPTIBLE); | |
985 | if (tty_hung_up_p(filp) || | |
986 | !(ch->asyncflags & ASYNC_INITIALIZED)) { | |
987 | #ifdef SERIAL_DO_RESTART | |
988 | if (ch->asyncflags & ASYNC_HUP_NOTIFY) | |
989 | retval = -EAGAIN; | |
990 | else | |
991 | retval = -ERESTARTSYS; | |
992 | #else | |
993 | retval = -EAGAIN; | |
994 | #endif | |
995 | break; | |
996 | } | |
997 | if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal || | |
998 | MoxaPortDCDON(ch->port))) | |
999 | break; | |
1000 | ||
1001 | if (signal_pending(current)) { | |
1002 | retval = -ERESTARTSYS; | |
1003 | break; | |
1004 | } | |
1005 | schedule(); | |
1006 | } | |
1007 | set_current_state(TASK_RUNNING); | |
1008 | remove_wait_queue(&ch->open_wait, &wait); | |
33f0f88f AC |
1009 | |
1010 | spin_lock_irqsave(&moxa_lock, flags); | |
1da177e4 LT |
1011 | if (!tty_hung_up_p(filp)) |
1012 | ch->count++; | |
1013 | ch->blocked_open--; | |
33f0f88f | 1014 | spin_unlock_irqrestore(&moxa_lock, flags); |
7aeb95da JS |
1015 | pr_debug("block_til_ready after blocking: ttys%d, count = %d\n", |
1016 | ch->port, ch->count); | |
1da177e4 LT |
1017 | if (retval) |
1018 | return (retval); | |
33f0f88f | 1019 | /* FIXME: review to see if we need to use set_bit on these */ |
1da177e4 | 1020 | ch->asyncflags |= ASYNC_NORMAL_ACTIVE; |
33f0f88f | 1021 | return 0; |
1da177e4 LT |
1022 | } |
1023 | ||
6f56b658 | 1024 | static void moxa_setup_empty_event(struct tty_struct *tty) |
1da177e4 | 1025 | { |
8f8ecbad | 1026 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1027 | unsigned long flags; |
1028 | ||
33f0f88f | 1029 | spin_lock_irqsave(&moxa_lock, flags); |
1da177e4 | 1030 | ch->statusflags |= EMPTYWAIT; |
8f8ecbad | 1031 | mod_timer(&moxa_ports[ch->port].emptyTimer, jiffies + HZ); |
33f0f88f | 1032 | spin_unlock_irqrestore(&moxa_lock, flags); |
1da177e4 LT |
1033 | } |
1034 | ||
6f56b658 | 1035 | static void moxa_check_xmit_empty(unsigned long data) |
1da177e4 | 1036 | { |
8f8ecbad | 1037 | struct moxa_port *ch; |
1da177e4 | 1038 | |
8f8ecbad | 1039 | ch = (struct moxa_port *) data; |
1da177e4 LT |
1040 | if (ch->tty && (ch->statusflags & EMPTYWAIT)) { |
1041 | if (MoxaPortTxQueue(ch->port) == 0) { | |
1042 | ch->statusflags &= ~EMPTYWAIT; | |
1043 | tty_wakeup(ch->tty); | |
1044 | return; | |
1045 | } | |
c4342205 JS |
1046 | mod_timer(&moxa_ports[ch->port].emptyTimer, |
1047 | round_jiffies(jiffies + HZ)); | |
1da177e4 LT |
1048 | } else |
1049 | ch->statusflags &= ~EMPTYWAIT; | |
1050 | } | |
1051 | ||
6f56b658 | 1052 | static void moxa_shut_down(struct moxa_port *ch) |
1da177e4 LT |
1053 | { |
1054 | struct tty_struct *tp; | |
1055 | ||
1056 | if (!(ch->asyncflags & ASYNC_INITIALIZED)) | |
1057 | return; | |
1058 | ||
1059 | tp = ch->tty; | |
1060 | ||
1061 | MoxaPortDisable(ch->port); | |
1062 | ||
1063 | /* | |
1064 | * If we're a modem control device and HUPCL is on, drop RTS & DTR. | |
1065 | */ | |
1066 | if (tp->termios->c_cflag & HUPCL) | |
1067 | MoxaPortLineCtrl(ch->port, 0, 0); | |
1068 | ||
1069 | ch->asyncflags &= ~ASYNC_INITIALIZED; | |
1070 | } | |
1071 | ||
6f56b658 | 1072 | static void moxa_receive_data(struct moxa_port *ch) |
1da177e4 LT |
1073 | { |
1074 | struct tty_struct *tp; | |
606d099c | 1075 | struct ktermios *ts; |
1da177e4 LT |
1076 | unsigned long flags; |
1077 | ||
1078 | ts = NULL; | |
1079 | tp = ch->tty; | |
1080 | if (tp) | |
1081 | ts = tp->termios; | |
1082 | /************************************************** | |
1083 | if ( !tp || !ts || !(ts->c_cflag & CREAD) ) { | |
1084 | *****************************************************/ | |
1085 | if (!tp || !ts) { | |
1086 | MoxaPortFlushData(ch->port, 0); | |
1087 | return; | |
1088 | } | |
33f0f88f AC |
1089 | spin_lock_irqsave(&moxa_lock, flags); |
1090 | MoxaPortReadData(ch->port, tp); | |
1091 | spin_unlock_irqrestore(&moxa_lock, flags); | |
1092 | tty_schedule_flip(tp); | |
1da177e4 LT |
1093 | } |
1094 | ||
1095 | #define Magic_code 0x404 | |
1096 | ||
1097 | /* | |
1098 | * System Configuration | |
1099 | */ | |
1100 | /* | |
1101 | * for C218 BIOS initialization | |
1102 | */ | |
1103 | #define C218_ConfBase 0x800 | |
1104 | #define C218_status (C218_ConfBase + 0) /* BIOS running status */ | |
1105 | #define C218_diag (C218_ConfBase + 2) /* diagnostic status */ | |
1106 | #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */ | |
1107 | #define C218DLoad_len (C218_ConfBase + 6) /* WORD */ | |
1108 | #define C218check_sum (C218_ConfBase + 8) /* BYTE */ | |
1109 | #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */ | |
1110 | #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */ | |
1111 | #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */ | |
1112 | #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */ | |
1113 | #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */ | |
1114 | ||
1115 | #define C218_LoadBuf 0x0F00 | |
1116 | #define C218_KeyCode 0x218 | |
1117 | #define CP204J_KeyCode 0x204 | |
1118 | ||
1119 | /* | |
1120 | * for C320 BIOS initialization | |
1121 | */ | |
1122 | #define C320_ConfBase 0x800 | |
1123 | #define C320_LoadBuf 0x0f00 | |
1124 | #define STS_init 0x05 /* for C320_status */ | |
1125 | ||
1126 | #define C320_status C320_ConfBase + 0 /* BIOS running status */ | |
1127 | #define C320_diag C320_ConfBase + 2 /* diagnostic status */ | |
1128 | #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */ | |
1129 | #define C320DLoad_len C320_ConfBase + 6 /* WORD */ | |
1130 | #define C320check_sum C320_ConfBase + 8 /* WORD */ | |
1131 | #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */ | |
1132 | #define C320bapi_len C320_ConfBase + 0x0c /* WORD */ | |
1133 | #define C320UART_no C320_ConfBase + 0x0e /* WORD */ | |
1134 | ||
1135 | #define C320_KeyCode 0x320 | |
1136 | ||
1137 | #define FixPage_addr 0x0000 /* starting addr of static page */ | |
1138 | #define DynPage_addr 0x2000 /* starting addr of dynamic page */ | |
1139 | #define C218_start 0x3000 /* starting addr of C218 BIOS prg */ | |
1140 | #define Control_reg 0x1ff0 /* select page and reset control */ | |
1141 | #define HW_reset 0x80 | |
1142 | ||
1143 | /* | |
1144 | * Function Codes | |
1145 | */ | |
1146 | #define FC_CardReset 0x80 | |
1147 | #define FC_ChannelReset 1 /* C320 firmware not supported */ | |
1148 | #define FC_EnableCH 2 | |
1149 | #define FC_DisableCH 3 | |
1150 | #define FC_SetParam 4 | |
1151 | #define FC_SetMode 5 | |
1152 | #define FC_SetRate 6 | |
1153 | #define FC_LineControl 7 | |
1154 | #define FC_LineStatus 8 | |
1155 | #define FC_XmitControl 9 | |
1156 | #define FC_FlushQueue 10 | |
1157 | #define FC_SendBreak 11 | |
1158 | #define FC_StopBreak 12 | |
1159 | #define FC_LoopbackON 13 | |
1160 | #define FC_LoopbackOFF 14 | |
1161 | #define FC_ClrIrqTable 15 | |
1162 | #define FC_SendXon 16 | |
1163 | #define FC_SetTermIrq 17 /* C320 firmware not supported */ | |
1164 | #define FC_SetCntIrq 18 /* C320 firmware not supported */ | |
1165 | #define FC_SetBreakIrq 19 | |
1166 | #define FC_SetLineIrq 20 | |
1167 | #define FC_SetFlowCtl 21 | |
1168 | #define FC_GenIrq 22 | |
1169 | #define FC_InCD180 23 | |
1170 | #define FC_OutCD180 24 | |
1171 | #define FC_InUARTreg 23 | |
1172 | #define FC_OutUARTreg 24 | |
1173 | #define FC_SetXonXoff 25 | |
1174 | #define FC_OutCD180CCR 26 | |
1175 | #define FC_ExtIQueue 27 | |
1176 | #define FC_ExtOQueue 28 | |
1177 | #define FC_ClrLineIrq 29 | |
1178 | #define FC_HWFlowCtl 30 | |
1179 | #define FC_GetClockRate 35 | |
1180 | #define FC_SetBaud 36 | |
1181 | #define FC_SetDataMode 41 | |
1182 | #define FC_GetCCSR 43 | |
1183 | #define FC_GetDataError 45 | |
1184 | #define FC_RxControl 50 | |
1185 | #define FC_ImmSend 51 | |
1186 | #define FC_SetXonState 52 | |
1187 | #define FC_SetXoffState 53 | |
1188 | #define FC_SetRxFIFOTrig 54 | |
1189 | #define FC_SetTxFIFOCnt 55 | |
1190 | #define FC_UnixRate 56 | |
1191 | #define FC_UnixResetTimer 57 | |
1192 | ||
1193 | #define RxFIFOTrig1 0 | |
1194 | #define RxFIFOTrig4 1 | |
1195 | #define RxFIFOTrig8 2 | |
1196 | #define RxFIFOTrig14 3 | |
1197 | ||
1198 | /* | |
1199 | * Dual-Ported RAM | |
1200 | */ | |
1201 | #define DRAM_global 0 | |
1202 | #define INT_data (DRAM_global + 0) | |
1203 | #define Config_base (DRAM_global + 0x108) | |
1204 | ||
1205 | #define IRQindex (INT_data + 0) | |
1206 | #define IRQpending (INT_data + 4) | |
1207 | #define IRQtable (INT_data + 8) | |
1208 | ||
1209 | /* | |
1210 | * Interrupt Status | |
1211 | */ | |
1212 | #define IntrRx 0x01 /* receiver data O.K. */ | |
1213 | #define IntrTx 0x02 /* transmit buffer empty */ | |
1214 | #define IntrFunc 0x04 /* function complete */ | |
1215 | #define IntrBreak 0x08 /* received break */ | |
1216 | #define IntrLine 0x10 /* line status change | |
1217 | for transmitter */ | |
1218 | #define IntrIntr 0x20 /* received INTR code */ | |
1219 | #define IntrQuit 0x40 /* received QUIT code */ | |
1220 | #define IntrEOF 0x80 /* received EOF code */ | |
1221 | ||
1222 | #define IntrRxTrigger 0x100 /* rx data count reach tigger value */ | |
1223 | #define IntrTxTrigger 0x200 /* tx data count below trigger value */ | |
1224 | ||
1225 | #define Magic_no (Config_base + 0) | |
1226 | #define Card_model_no (Config_base + 2) | |
1227 | #define Total_ports (Config_base + 4) | |
1228 | #define Module_cnt (Config_base + 8) | |
1229 | #define Module_no (Config_base + 10) | |
1230 | #define Timer_10ms (Config_base + 14) | |
1231 | #define Disable_IRQ (Config_base + 20) | |
1232 | #define TMS320_PORT1 (Config_base + 22) | |
1233 | #define TMS320_PORT2 (Config_base + 24) | |
1234 | #define TMS320_CLOCK (Config_base + 26) | |
1235 | ||
1236 | /* | |
1237 | * DATA BUFFER in DRAM | |
1238 | */ | |
1239 | #define Extern_table 0x400 /* Base address of the external table | |
1240 | (24 words * 64) total 3K bytes | |
1241 | (24 words * 128) total 6K bytes */ | |
1242 | #define Extern_size 0x60 /* 96 bytes */ | |
1243 | #define RXrptr 0x00 /* read pointer for RX buffer */ | |
1244 | #define RXwptr 0x02 /* write pointer for RX buffer */ | |
1245 | #define TXrptr 0x04 /* read pointer for TX buffer */ | |
1246 | #define TXwptr 0x06 /* write pointer for TX buffer */ | |
1247 | #define HostStat 0x08 /* IRQ flag and general flag */ | |
1248 | #define FlagStat 0x0A | |
1249 | #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */ | |
1250 | /* x x x x | | | | */ | |
1251 | /* | | | + CTS flow */ | |
1252 | /* | | +--- RTS flow */ | |
1253 | /* | +------ TX Xon/Xoff */ | |
1254 | /* +--------- RX Xon/Xoff */ | |
1255 | #define Break_cnt 0x0E /* received break count */ | |
1256 | #define CD180TXirq 0x10 /* if non-0: enable TX irq */ | |
1257 | #define RX_mask 0x12 | |
1258 | #define TX_mask 0x14 | |
1259 | #define Ofs_rxb 0x16 | |
1260 | #define Ofs_txb 0x18 | |
1261 | #define Page_rxb 0x1A | |
1262 | #define Page_txb 0x1C | |
1263 | #define EndPage_rxb 0x1E | |
1264 | #define EndPage_txb 0x20 | |
1265 | #define Data_error 0x22 | |
1266 | #define RxTrigger 0x28 | |
1267 | #define TxTrigger 0x2a | |
1268 | ||
1269 | #define rRXwptr 0x34 | |
1270 | #define Low_water 0x36 | |
1271 | ||
1272 | #define FuncCode 0x40 | |
1273 | #define FuncArg 0x42 | |
1274 | #define FuncArg1 0x44 | |
1275 | ||
1276 | #define C218rx_size 0x2000 /* 8K bytes */ | |
1277 | #define C218tx_size 0x8000 /* 32K bytes */ | |
1278 | ||
1279 | #define C218rx_mask (C218rx_size - 1) | |
1280 | #define C218tx_mask (C218tx_size - 1) | |
1281 | ||
1282 | #define C320p8rx_size 0x2000 | |
1283 | #define C320p8tx_size 0x8000 | |
1284 | #define C320p8rx_mask (C320p8rx_size - 1) | |
1285 | #define C320p8tx_mask (C320p8tx_size - 1) | |
1286 | ||
1287 | #define C320p16rx_size 0x2000 | |
1288 | #define C320p16tx_size 0x4000 | |
1289 | #define C320p16rx_mask (C320p16rx_size - 1) | |
1290 | #define C320p16tx_mask (C320p16tx_size - 1) | |
1291 | ||
1292 | #define C320p24rx_size 0x2000 | |
1293 | #define C320p24tx_size 0x2000 | |
1294 | #define C320p24rx_mask (C320p24rx_size - 1) | |
1295 | #define C320p24tx_mask (C320p24tx_size - 1) | |
1296 | ||
1297 | #define C320p32rx_size 0x1000 | |
1298 | #define C320p32tx_size 0x1000 | |
1299 | #define C320p32rx_mask (C320p32rx_size - 1) | |
1300 | #define C320p32tx_mask (C320p32tx_size - 1) | |
1301 | ||
1302 | #define Page_size 0x2000 | |
1303 | #define Page_mask (Page_size - 1) | |
1304 | #define C218rx_spage 3 | |
1305 | #define C218tx_spage 4 | |
1306 | #define C218rx_pageno 1 | |
1307 | #define C218tx_pageno 4 | |
1308 | #define C218buf_pageno 5 | |
1309 | ||
1310 | #define C320p8rx_spage 3 | |
1311 | #define C320p8tx_spage 4 | |
1312 | #define C320p8rx_pgno 1 | |
1313 | #define C320p8tx_pgno 4 | |
1314 | #define C320p8buf_pgno 5 | |
1315 | ||
1316 | #define C320p16rx_spage 3 | |
1317 | #define C320p16tx_spage 4 | |
1318 | #define C320p16rx_pgno 1 | |
1319 | #define C320p16tx_pgno 2 | |
1320 | #define C320p16buf_pgno 3 | |
1321 | ||
1322 | #define C320p24rx_spage 3 | |
1323 | #define C320p24tx_spage 4 | |
1324 | #define C320p24rx_pgno 1 | |
1325 | #define C320p24tx_pgno 1 | |
1326 | #define C320p24buf_pgno 2 | |
1327 | ||
1328 | #define C320p32rx_spage 3 | |
1329 | #define C320p32tx_ofs C320p32rx_size | |
1330 | #define C320p32tx_spage 3 | |
1331 | #define C320p32buf_pgno 1 | |
1332 | ||
1333 | /* | |
1334 | * Host Status | |
1335 | */ | |
1336 | #define WakeupRx 0x01 | |
1337 | #define WakeupTx 0x02 | |
1338 | #define WakeupBreak 0x08 | |
1339 | #define WakeupLine 0x10 | |
1340 | #define WakeupIntr 0x20 | |
1341 | #define WakeupQuit 0x40 | |
1342 | #define WakeupEOF 0x80 /* used in VTIME control */ | |
1343 | #define WakeupRxTrigger 0x100 | |
1344 | #define WakeupTxTrigger 0x200 | |
1345 | /* | |
1346 | * Flag status | |
1347 | */ | |
1348 | #define Rx_over 0x01 | |
1349 | #define Xoff_state 0x02 | |
1350 | #define Tx_flowOff 0x04 | |
1351 | #define Tx_enable 0x08 | |
1352 | #define CTS_state 0x10 | |
1353 | #define DSR_state 0x20 | |
1354 | #define DCD_state 0x80 | |
1355 | /* | |
1356 | * FlowControl | |
1357 | */ | |
1358 | #define CTS_FlowCtl 1 | |
1359 | #define RTS_FlowCtl 2 | |
1360 | #define Tx_FlowCtl 4 | |
1361 | #define Rx_FlowCtl 8 | |
1362 | #define IXM_IXANY 0x10 | |
1363 | ||
1364 | #define LowWater 128 | |
1365 | ||
1366 | #define DTR_ON 1 | |
1367 | #define RTS_ON 2 | |
1368 | #define CTS_ON 1 | |
1369 | #define DSR_ON 2 | |
1370 | #define DCD_ON 8 | |
1371 | ||
1372 | /* mode definition */ | |
1373 | #define MX_CS8 0x03 | |
1374 | #define MX_CS7 0x02 | |
1375 | #define MX_CS6 0x01 | |
1376 | #define MX_CS5 0x00 | |
1377 | ||
1378 | #define MX_STOP1 0x00 | |
1379 | #define MX_STOP15 0x04 | |
1380 | #define MX_STOP2 0x08 | |
1381 | ||
1382 | #define MX_PARNONE 0x00 | |
1383 | #define MX_PAREVEN 0x40 | |
1384 | #define MX_PARODD 0xC0 | |
1385 | ||
1386 | /* | |
1387 | * Query | |
1388 | */ | |
1da177e4 LT |
1389 | |
1390 | struct mon_str { | |
1391 | int tick; | |
1392 | int rxcnt[MAX_PORTS]; | |
1393 | int txcnt[MAX_PORTS]; | |
1394 | }; | |
1da177e4 LT |
1395 | |
1396 | #define DCD_changed 0x01 | |
1397 | #define DCD_oldstate 0x80 | |
1398 | ||
1399 | static unsigned char moxaBuff[10240]; | |
1da177e4 LT |
1400 | static int moxaLowWaterChk; |
1401 | static int moxaCard; | |
9dff89cd | 1402 | static struct mon_str moxaLog; |
9fa372a8 | 1403 | static int moxaFuncTout = HZ / 2; |
1da177e4 | 1404 | |
1da177e4 | 1405 | static void moxafunc(void __iomem *, int, ushort); |
6f56b658 JS |
1406 | static void moxa_wait_finish(void __iomem *); |
1407 | static void moxa_low_water_check(void __iomem *); | |
1da177e4 LT |
1408 | static int moxaloadbios(int, unsigned char __user *, int); |
1409 | static int moxafindcard(int); | |
1410 | static int moxaload320b(int, unsigned char __user *, int); | |
1411 | static int moxaloadcode(int, unsigned char __user *, int); | |
1412 | static int moxaloadc218(int, void __iomem *, int); | |
1413 | static int moxaloadc320(int, void __iomem *, int, int *); | |
1414 | ||
1415 | /***************************************************************************** | |
1416 | * Driver level functions: * | |
1417 | * 1. MoxaDriverInit(void); * | |
1418 | * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); * | |
1419 | * 3. MoxaDriverPoll(void); * | |
1420 | *****************************************************************************/ | |
1421 | void MoxaDriverInit(void) | |
1422 | { | |
8f8ecbad JS |
1423 | struct moxa_port *p; |
1424 | unsigned int i; | |
1da177e4 LT |
1425 | |
1426 | moxaFuncTout = HZ / 2; /* 500 mini-seconds */ | |
1427 | moxaCard = 0; | |
1428 | moxaLog.tick = 0; | |
1429 | moxaLowWaterChk = 0; | |
1430 | for (i = 0; i < MAX_PORTS; i++) { | |
8f8ecbad JS |
1431 | p = &moxa_ports[i]; |
1432 | p->chkPort = 0; | |
1433 | p->lowChkFlag = 0; | |
1434 | p->lineCtrl = 0; | |
1da177e4 LT |
1435 | moxaLog.rxcnt[i] = 0; |
1436 | moxaLog.txcnt[i] = 0; | |
1437 | } | |
1438 | } | |
1439 | ||
1440 | #define MOXA 0x400 | |
1441 | #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */ | |
1442 | #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */ | |
1443 | #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */ | |
1444 | #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */ | |
1445 | #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */ | |
1446 | #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */ | |
1447 | #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */ | |
1448 | #define MOXA_GETDATACOUNT (MOXA + 23) | |
1449 | #define MOXA_GET_IOQUEUE (MOXA + 27) | |
1450 | #define MOXA_FLUSH_QUEUE (MOXA + 28) | |
1451 | #define MOXA_GET_CONF (MOXA + 35) /* configuration */ | |
1452 | #define MOXA_GET_MAJOR (MOXA + 63) | |
1453 | #define MOXA_GET_CUMAJOR (MOXA + 64) | |
1454 | #define MOXA_GETMSTATUS (MOXA + 65) | |
1455 | ||
1da177e4 LT |
1456 | struct dl_str { |
1457 | char __user *buf; | |
1458 | int len; | |
1459 | int cardno; | |
1460 | }; | |
1461 | ||
1da177e4 LT |
1462 | static struct dl_str dltmp; |
1463 | ||
1464 | void MoxaPortFlushData(int port, int mode) | |
1465 | { | |
1466 | void __iomem *ofsAddr; | |
1467 | if ((mode < 0) || (mode > 2)) | |
1468 | return; | |
8f8ecbad | 1469 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
1470 | moxafunc(ofsAddr, FC_FlushQueue, mode); |
1471 | if (mode != 1) { | |
8f8ecbad | 1472 | moxa_ports[port].lowChkFlag = 0; |
6f56b658 | 1473 | moxa_low_water_check(ofsAddr); |
1da177e4 LT |
1474 | } |
1475 | } | |
1476 | ||
1477 | int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port) | |
1478 | { | |
1479 | int i; | |
1480 | int status; | |
1481 | int MoxaPortTxQueue(int), MoxaPortRxQueue(int); | |
1482 | void __user *argp = (void __user *)arg; | |
1483 | ||
11324edd | 1484 | if (port == MAX_PORTS) { |
1da177e4 LT |
1485 | if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) && |
1486 | (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) && | |
1487 | (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) && | |
1488 | (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) && | |
1489 | (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS)) | |
1490 | return (-EINVAL); | |
1491 | } | |
1492 | switch (cmd) { | |
1493 | case MOXA_GET_CONF: | |
9dff89cd JS |
1494 | if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * |
1495 | sizeof(struct moxa_board_conf))) | |
1da177e4 LT |
1496 | return -EFAULT; |
1497 | return (0); | |
1498 | case MOXA_INIT_DRIVER: | |
1499 | if ((int) arg == 0x404) | |
1500 | MoxaDriverInit(); | |
1501 | return (0); | |
1502 | case MOXA_GETDATACOUNT: | |
1503 | moxaLog.tick = jiffies; | |
9dff89cd | 1504 | if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str))) |
1da177e4 LT |
1505 | return -EFAULT; |
1506 | return (0); | |
1507 | case MOXA_FLUSH_QUEUE: | |
1508 | MoxaPortFlushData(port, arg); | |
1509 | return (0); | |
8f8ecbad JS |
1510 | case MOXA_GET_IOQUEUE: { |
1511 | struct moxaq_str __user *argm = argp; | |
181d6f4f | 1512 | struct moxaq_str tmp; |
8f8ecbad JS |
1513 | |
1514 | for (i = 0; i < MAX_PORTS; i++, argm++) { | |
181d6f4f JS |
1515 | memset(&tmp, 0, sizeof(tmp)); |
1516 | if (moxa_ports[i].chkPort) { | |
1517 | tmp.inq = MoxaPortRxQueue(i); | |
1518 | tmp.outq = MoxaPortTxQueue(i); | |
1da177e4 | 1519 | } |
181d6f4f | 1520 | if (copy_to_user(argm, &tmp, sizeof(tmp))) |
8f8ecbad | 1521 | return -EFAULT; |
1da177e4 | 1522 | } |
1da177e4 | 1523 | return (0); |
8f8ecbad | 1524 | } case MOXA_GET_OQUEUE: |
1da177e4 LT |
1525 | i = MoxaPortTxQueue(port); |
1526 | return put_user(i, (unsigned long __user *)argp); | |
1527 | case MOXA_GET_IQUEUE: | |
1528 | i = MoxaPortRxQueue(port); | |
1529 | return put_user(i, (unsigned long __user *)argp); | |
1530 | case MOXA_GET_MAJOR: | |
1531 | if(copy_to_user(argp, &ttymajor, sizeof(int))) | |
1532 | return -EFAULT; | |
1533 | return 0; | |
1534 | case MOXA_GET_CUMAJOR: | |
1535 | i = 0; | |
1536 | if(copy_to_user(argp, &i, sizeof(int))) | |
1537 | return -EFAULT; | |
1538 | return 0; | |
8f8ecbad JS |
1539 | case MOXA_GETMSTATUS: { |
1540 | struct mxser_mstatus __user *argm = argp; | |
181d6f4f | 1541 | struct mxser_mstatus tmp; |
8f8ecbad JS |
1542 | struct moxa_port *p; |
1543 | ||
1544 | for (i = 0; i < MAX_PORTS; i++, argm++) { | |
1545 | p = &moxa_ports[i]; | |
181d6f4f | 1546 | memset(&tmp, 0, sizeof(tmp)); |
8f8ecbad JS |
1547 | if (!p->chkPort) { |
1548 | goto copy; | |
1da177e4 | 1549 | } else { |
8f8ecbad | 1550 | status = MoxaPortLineStatus(p->port); |
1da177e4 | 1551 | if (status & 1) |
181d6f4f | 1552 | tmp.cts = 1; |
1da177e4 | 1553 | if (status & 2) |
181d6f4f | 1554 | tmp.dsr = 1; |
1da177e4 | 1555 | if (status & 4) |
181d6f4f | 1556 | tmp.dcd = 1; |
1da177e4 LT |
1557 | } |
1558 | ||
8f8ecbad | 1559 | if (!p->tty || !p->tty->termios) |
181d6f4f | 1560 | tmp.cflag = p->cflag; |
1da177e4 | 1561 | else |
181d6f4f | 1562 | tmp.cflag = p->tty->termios->c_cflag; |
8f8ecbad | 1563 | copy: |
181d6f4f | 1564 | if (copy_to_user(argm, &tmp, sizeof(tmp))) |
8f8ecbad | 1565 | return -EFAULT; |
1da177e4 | 1566 | } |
1da177e4 | 1567 | return 0; |
8f8ecbad | 1568 | } default: |
1da177e4 LT |
1569 | return (-ENOIOCTLCMD); |
1570 | case MOXA_LOAD_BIOS: | |
1571 | case MOXA_FIND_BOARD: | |
1572 | case MOXA_LOAD_C320B: | |
1573 | case MOXA_LOAD_CODE: | |
49cd619c AC |
1574 | if (!capable(CAP_SYS_RAWIO)) |
1575 | return -EPERM; | |
1da177e4 LT |
1576 | break; |
1577 | } | |
1578 | ||
1579 | if(copy_from_user(&dltmp, argp, sizeof(struct dl_str))) | |
1580 | return -EFAULT; | |
a2f72982 | 1581 | if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS || dltmp.len < 0) |
1da177e4 LT |
1582 | return -EINVAL; |
1583 | ||
1584 | switch(cmd) | |
1585 | { | |
1586 | case MOXA_LOAD_BIOS: | |
1587 | i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len); | |
1588 | return (i); | |
1589 | case MOXA_FIND_BOARD: | |
1590 | return moxafindcard(dltmp.cardno); | |
1591 | case MOXA_LOAD_C320B: | |
1592 | moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len); | |
1593 | default: /* to keep gcc happy */ | |
1594 | return (0); | |
1595 | case MOXA_LOAD_CODE: | |
1596 | i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len); | |
1597 | if (i == -1) | |
1598 | return (-EFAULT); | |
1599 | return (i); | |
1600 | ||
1601 | } | |
1602 | } | |
1603 | ||
1604 | int MoxaDriverPoll(void) | |
1605 | { | |
8f8ecbad | 1606 | struct moxa_board_conf *brd; |
1da177e4 LT |
1607 | register ushort temp; |
1608 | register int card; | |
1609 | void __iomem *ofsAddr; | |
1610 | void __iomem *ip; | |
1611 | int port, p, ports; | |
1612 | ||
1613 | if (moxaCard == 0) | |
1614 | return (-1); | |
1615 | for (card = 0; card < MAX_BOARDS; card++) { | |
8f8ecbad JS |
1616 | brd = &moxa_boards[card]; |
1617 | if (brd->loadstat == 0) | |
01cfaf0d | 1618 | continue; |
8f8ecbad | 1619 | if ((ports = brd->numPorts) == 0) |
1da177e4 | 1620 | continue; |
8f8ecbad JS |
1621 | if (readb(brd->intPend) == 0xff) { |
1622 | ip = brd->intTable + readb(brd->intNdx); | |
1da177e4 LT |
1623 | p = card * MAX_PORTS_PER_BOARD; |
1624 | ports <<= 1; | |
1625 | for (port = 0; port < ports; port += 2, p++) { | |
1626 | if ((temp = readw(ip + port)) != 0) { | |
1627 | writew(0, ip + port); | |
8f8ecbad | 1628 | ofsAddr = moxa_ports[p].tableAddr; |
1da177e4 LT |
1629 | if (temp & IntrTx) |
1630 | writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat); | |
1631 | if (temp & IntrBreak) { | |
8f8ecbad | 1632 | moxa_ports[p].breakCnt++; |
1da177e4 LT |
1633 | } |
1634 | if (temp & IntrLine) { | |
1635 | if (readb(ofsAddr + FlagStat) & DCD_state) { | |
8f8ecbad JS |
1636 | if ((moxa_ports[p].DCDState & DCD_oldstate) == 0) |
1637 | moxa_ports[p].DCDState = (DCD_oldstate | | |
1da177e4 LT |
1638 | DCD_changed); |
1639 | } else { | |
8f8ecbad JS |
1640 | if (moxa_ports[p].DCDState & DCD_oldstate) |
1641 | moxa_ports[p].DCDState = DCD_changed; | |
1da177e4 LT |
1642 | } |
1643 | } | |
1644 | } | |
1645 | } | |
8f8ecbad | 1646 | writeb(0, brd->intPend); |
1da177e4 LT |
1647 | } |
1648 | if (moxaLowWaterChk) { | |
1649 | p = card * MAX_PORTS_PER_BOARD; | |
1650 | for (port = 0; port < ports; port++, p++) { | |
8f8ecbad JS |
1651 | if (moxa_ports[p].lowChkFlag) { |
1652 | moxa_ports[p].lowChkFlag = 0; | |
1653 | ofsAddr = moxa_ports[p].tableAddr; | |
6f56b658 | 1654 | moxa_low_water_check(ofsAddr); |
1da177e4 LT |
1655 | } |
1656 | } | |
1657 | } | |
1658 | } | |
1659 | moxaLowWaterChk = 0; | |
1660 | return (0); | |
1661 | } | |
1662 | ||
1663 | /***************************************************************************** | |
1664 | * Card level function: * | |
1665 | * 1. MoxaPortsOfCard(int cardno); * | |
1666 | *****************************************************************************/ | |
1667 | int MoxaPortsOfCard(int cardno) | |
1668 | { | |
1669 | ||
1670 | if (moxa_boards[cardno].boardType == 0) | |
1671 | return (0); | |
1672 | return (moxa_boards[cardno].numPorts); | |
1673 | } | |
1674 | ||
1675 | /***************************************************************************** | |
1676 | * Port level functions: * | |
1677 | * 1. MoxaPortIsValid(int port); * | |
1678 | * 2. MoxaPortEnable(int port); * | |
1679 | * 3. MoxaPortDisable(int port); * | |
1680 | * 4. MoxaPortGetMaxBaud(int port); * | |
1da177e4 | 1681 | * 6. MoxaPortSetBaud(int port, long baud); * |
1da177e4 LT |
1682 | * 8. MoxaPortSetTermio(int port, unsigned char *termio); * |
1683 | * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); * | |
1684 | * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); * | |
1685 | * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); * | |
1686 | * 12. MoxaPortLineStatus(int port); * | |
1687 | * 13. MoxaPortDCDChange(int port); * | |
1688 | * 14. MoxaPortDCDON(int port); * | |
1689 | * 15. MoxaPortFlushData(int port, int mode); * | |
1690 | * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); * | |
33f0f88f | 1691 | * 17. MoxaPortReadData(int port, struct tty_struct *tty); * |
1da177e4 LT |
1692 | * 20. MoxaPortTxQueue(int port); * |
1693 | * 21. MoxaPortTxFree(int port); * | |
1694 | * 22. MoxaPortRxQueue(int port); * | |
1da177e4 LT |
1695 | * 24. MoxaPortTxDisable(int port); * |
1696 | * 25. MoxaPortTxEnable(int port); * | |
1da177e4 | 1697 | * 27. MoxaPortResetBrkCnt(int port); * |
1da177e4 LT |
1698 | * 30. MoxaPortSendBreak(int port, int ticks); * |
1699 | *****************************************************************************/ | |
1700 | /* | |
1701 | * Moxa Port Number Description: | |
1702 | * | |
1703 | * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, | |
1704 | * the port number using in MOXA driver functions will be 0 to 31 for | |
1705 | * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 | |
1706 | * to 127 for fourth. For example, if you setup three MOXA boards, | |
1707 | * first board is C218, second board is C320-16 and third board is | |
1708 | * C320-32. The port number of first board (C218 - 8 ports) is from | |
1709 | * 0 to 7. The port number of second board (C320 - 16 ports) is form | |
1710 | * 32 to 47. The port number of third board (C320 - 32 ports) is from | |
1711 | * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to | |
1712 | * 127 will be invalid. | |
1713 | * | |
1714 | * | |
1715 | * Moxa Functions Description: | |
1716 | * | |
1717 | * Function 1: Driver initialization routine, this routine must be | |
1718 | * called when initialized driver. | |
1719 | * Syntax: | |
1720 | * void MoxaDriverInit(); | |
1721 | * | |
1722 | * | |
1723 | * Function 2: Moxa driver private IOCTL command processing. | |
1724 | * Syntax: | |
1725 | * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); | |
1726 | * | |
1727 | * unsigned int cmd : IOCTL command | |
1728 | * unsigned long arg : IOCTL argument | |
1729 | * int port : port number (0 - 127) | |
1730 | * | |
1731 | * return: 0 (OK) | |
1732 | * -EINVAL | |
1733 | * -ENOIOCTLCMD | |
1734 | * | |
1735 | * | |
1736 | * Function 3: Moxa driver polling process routine. | |
1737 | * Syntax: | |
1738 | * int MoxaDriverPoll(void); | |
1739 | * | |
1740 | * return: 0 ; polling O.K. | |
1741 | * -1 : no any Moxa card. | |
1742 | * | |
1743 | * | |
1744 | * Function 4: Get the ports of this card. | |
1745 | * Syntax: | |
1746 | * int MoxaPortsOfCard(int cardno); | |
1747 | * | |
1748 | * int cardno : card number (0 - 3) | |
1749 | * | |
1750 | * return: 0 : this card is invalid | |
1751 | * 8/16/24/32 | |
1752 | * | |
1753 | * | |
1754 | * Function 5: Check this port is valid or invalid | |
1755 | * Syntax: | |
1756 | * int MoxaPortIsValid(int port); | |
1757 | * int port : port number (0 - 127, ref port description) | |
1758 | * | |
1759 | * return: 0 : this port is invalid | |
1760 | * 1 : this port is valid | |
1761 | * | |
1762 | * | |
1763 | * Function 6: Enable this port to start Tx/Rx data. | |
1764 | * Syntax: | |
1765 | * void MoxaPortEnable(int port); | |
1766 | * int port : port number (0 - 127) | |
1767 | * | |
1768 | * | |
1769 | * Function 7: Disable this port | |
1770 | * Syntax: | |
1771 | * void MoxaPortDisable(int port); | |
1772 | * int port : port number (0 - 127) | |
1773 | * | |
1774 | * | |
1775 | * Function 8: Get the maximun available baud rate of this port. | |
1776 | * Syntax: | |
1777 | * long MoxaPortGetMaxBaud(int port); | |
1778 | * int port : port number (0 - 127) | |
1779 | * | |
1780 | * return: 0 : this port is invalid | |
1781 | * 38400/57600/115200 bps | |
1782 | * | |
1783 | * | |
1da177e4 LT |
1784 | * Function 10: Setting baud rate of this port. |
1785 | * Syntax: | |
1786 | * long MoxaPortSetBaud(int port, long baud); | |
1787 | * int port : port number (0 - 127) | |
1788 | * long baud : baud rate (50 - 115200) | |
1789 | * | |
1790 | * return: 0 : this port is invalid or baud < 50 | |
1791 | * 50 - 115200 : the real baud rate set to the port, if | |
1792 | * the argument baud is large than maximun | |
1793 | * available baud rate, the real setting | |
1794 | * baud rate will be the maximun baud rate. | |
1795 | * | |
1796 | * | |
1da177e4 LT |
1797 | * Function 12: Configure the port. |
1798 | * Syntax: | |
606d099c | 1799 | * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); |
1da177e4 | 1800 | * int port : port number (0 - 127) |
606d099c | 1801 | * struct ktermios * termio : termio structure pointer |
c7bce309 | 1802 | * speed_t baud : baud rate |
1da177e4 LT |
1803 | * |
1804 | * return: -1 : this port is invalid or termio == NULL | |
1805 | * 0 : setting O.K. | |
1806 | * | |
1807 | * | |
1808 | * Function 13: Get the DTR/RTS state of this port. | |
1809 | * Syntax: | |
1810 | * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); | |
1811 | * int port : port number (0 - 127) | |
1812 | * int * dtrState : pointer to INT to receive the current DTR | |
1813 | * state. (if NULL, this function will not | |
1814 | * write to this address) | |
1815 | * int * rtsState : pointer to INT to receive the current RTS | |
1816 | * state. (if NULL, this function will not | |
1817 | * write to this address) | |
1818 | * | |
1819 | * return: -1 : this port is invalid | |
1820 | * 0 : O.K. | |
1821 | * | |
1822 | * | |
1823 | * Function 14: Setting the DTR/RTS output state of this port. | |
1824 | * Syntax: | |
1825 | * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); | |
1826 | * int port : port number (0 - 127) | |
1827 | * int dtrState : DTR output state (0: off, 1: on) | |
1828 | * int rtsState : RTS output state (0: off, 1: on) | |
1829 | * | |
1830 | * | |
1831 | * Function 15: Setting the flow control of this port. | |
1832 | * Syntax: | |
1833 | * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, | |
1834 | * int txFlow,int xany); | |
1835 | * int port : port number (0 - 127) | |
1836 | * int rtsFlow : H/W RTS flow control (0: no, 1: yes) | |
1837 | * int ctsFlow : H/W CTS flow control (0: no, 1: yes) | |
1838 | * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) | |
1839 | * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) | |
1840 | * int xany : S/W XANY flow control (0: no, 1: yes) | |
1841 | * | |
1842 | * | |
1843 | * Function 16: Get ths line status of this port | |
1844 | * Syntax: | |
1845 | * int MoxaPortLineStatus(int port); | |
1846 | * int port : port number (0 - 127) | |
1847 | * | |
1848 | * return: Bit 0 - CTS state (0: off, 1: on) | |
1849 | * Bit 1 - DSR state (0: off, 1: on) | |
1850 | * Bit 2 - DCD state (0: off, 1: on) | |
1851 | * | |
1852 | * | |
1853 | * Function 17: Check the DCD state has changed since the last read | |
1854 | * of this function. | |
1855 | * Syntax: | |
1856 | * int MoxaPortDCDChange(int port); | |
1857 | * int port : port number (0 - 127) | |
1858 | * | |
1859 | * return: 0 : no changed | |
1860 | * 1 : DCD has changed | |
1861 | * | |
1862 | * | |
1863 | * Function 18: Check ths current DCD state is ON or not. | |
1864 | * Syntax: | |
1865 | * int MoxaPortDCDON(int port); | |
1866 | * int port : port number (0 - 127) | |
1867 | * | |
1868 | * return: 0 : DCD off | |
1869 | * 1 : DCD on | |
1870 | * | |
1871 | * | |
1872 | * Function 19: Flush the Rx/Tx buffer data of this port. | |
1873 | * Syntax: | |
1874 | * void MoxaPortFlushData(int port, int mode); | |
1875 | * int port : port number (0 - 127) | |
1876 | * int mode | |
1877 | * 0 : flush the Rx buffer | |
1878 | * 1 : flush the Tx buffer | |
1879 | * 2 : flush the Rx and Tx buffer | |
1880 | * | |
1881 | * | |
1882 | * Function 20: Write data. | |
1883 | * Syntax: | |
1884 | * int MoxaPortWriteData(int port, unsigned char * buffer, int length); | |
1885 | * int port : port number (0 - 127) | |
1886 | * unsigned char * buffer : pointer to write data buffer. | |
1887 | * int length : write data length | |
1888 | * | |
1889 | * return: 0 - length : real write data length | |
1890 | * | |
1891 | * | |
1892 | * Function 21: Read data. | |
1893 | * Syntax: | |
33f0f88f | 1894 | * int MoxaPortReadData(int port, struct tty_struct *tty); |
1da177e4 | 1895 | * int port : port number (0 - 127) |
33f0f88f | 1896 | * struct tty_struct *tty : tty for data |
1da177e4 LT |
1897 | * |
1898 | * return: 0 - length : real read data length | |
1899 | * | |
1900 | * | |
1da177e4 LT |
1901 | * Function 24: Get the Tx buffer current queued data bytes |
1902 | * Syntax: | |
1903 | * int MoxaPortTxQueue(int port); | |
1904 | * int port : port number (0 - 127) | |
1905 | * | |
1906 | * return: .. : Tx buffer current queued data bytes | |
1907 | * | |
1908 | * | |
1909 | * Function 25: Get the Tx buffer current free space | |
1910 | * Syntax: | |
1911 | * int MoxaPortTxFree(int port); | |
1912 | * int port : port number (0 - 127) | |
1913 | * | |
1914 | * return: .. : Tx buffer current free space | |
1915 | * | |
1916 | * | |
1917 | * Function 26: Get the Rx buffer current queued data bytes | |
1918 | * Syntax: | |
1919 | * int MoxaPortRxQueue(int port); | |
1920 | * int port : port number (0 - 127) | |
1921 | * | |
1922 | * return: .. : Rx buffer current queued data bytes | |
1923 | * | |
1924 | * | |
1da177e4 LT |
1925 | * Function 28: Disable port data transmission. |
1926 | * Syntax: | |
1927 | * void MoxaPortTxDisable(int port); | |
1928 | * int port : port number (0 - 127) | |
1929 | * | |
1930 | * | |
1931 | * Function 29: Enable port data transmission. | |
1932 | * Syntax: | |
1933 | * void MoxaPortTxEnable(int port); | |
1934 | * int port : port number (0 - 127) | |
1935 | * | |
1936 | * | |
1da177e4 LT |
1937 | * Function 31: Get the received BREAK signal count and reset it. |
1938 | * Syntax: | |
1939 | * int MoxaPortResetBrkCnt(int port); | |
1940 | * int port : port number (0 - 127) | |
1941 | * | |
1942 | * return: 0 - .. : BREAK signal count | |
1943 | * | |
1944 | * | |
1da177e4 LT |
1945 | * Function 34: Send out a BREAK signal. |
1946 | * Syntax: | |
1947 | * void MoxaPortSendBreak(int port, int ms100); | |
1948 | * int port : port number (0 - 127) | |
1949 | * int ms100 : break signal time interval. | |
1950 | * unit: 100 mini-second. if ms100 == 0, it will | |
1951 | * send out a about 250 ms BREAK signal. | |
1952 | * | |
1953 | */ | |
1954 | int MoxaPortIsValid(int port) | |
1955 | { | |
1956 | ||
1957 | if (moxaCard == 0) | |
1958 | return (0); | |
8f8ecbad | 1959 | if (moxa_ports[port].chkPort == 0) |
1da177e4 LT |
1960 | return (0); |
1961 | return (1); | |
1962 | } | |
1963 | ||
1964 | void MoxaPortEnable(int port) | |
1965 | { | |
1966 | void __iomem *ofsAddr; | |
1967 | int MoxaPortLineStatus(int); | |
1968 | short lowwater = 512; | |
1969 | ||
8f8ecbad | 1970 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 | 1971 | writew(lowwater, ofsAddr + Low_water); |
8f8ecbad | 1972 | moxa_ports[port].breakCnt = 0; |
1da177e4 LT |
1973 | if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) || |
1974 | (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) { | |
1975 | moxafunc(ofsAddr, FC_SetBreakIrq, 0); | |
1976 | } else { | |
1977 | writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat); | |
1978 | } | |
1979 | ||
1980 | moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); | |
1981 | moxafunc(ofsAddr, FC_FlushQueue, 2); | |
1982 | ||
1983 | moxafunc(ofsAddr, FC_EnableCH, Magic_code); | |
1984 | MoxaPortLineStatus(port); | |
1985 | } | |
1986 | ||
1987 | void MoxaPortDisable(int port) | |
1988 | { | |
8f8ecbad | 1989 | void __iomem *ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
1990 | |
1991 | moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ | |
1992 | moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); | |
1993 | writew(0, ofsAddr + HostStat); | |
1994 | moxafunc(ofsAddr, FC_DisableCH, Magic_code); | |
1995 | } | |
1996 | ||
1997 | long MoxaPortGetMaxBaud(int port) | |
1998 | { | |
1999 | if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) || | |
2000 | (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) | |
2001 | return (460800L); | |
2002 | else | |
2003 | return (921600L); | |
2004 | } | |
2005 | ||
2006 | ||
2007 | long MoxaPortSetBaud(int port, long baud) | |
2008 | { | |
2009 | void __iomem *ofsAddr; | |
2010 | long max, clock; | |
2011 | unsigned int val; | |
2012 | ||
2013 | if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0)) | |
2014 | return (0); | |
8f8ecbad | 2015 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2016 | if (baud > max) |
2017 | baud = max; | |
2018 | if (max == 38400L) | |
2019 | clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */ | |
2020 | else if (max == 57600L) | |
2021 | clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */ | |
2022 | else | |
2023 | clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */ | |
2024 | val = clock / baud; | |
2025 | moxafunc(ofsAddr, FC_SetBaud, val); | |
2026 | baud = clock / val; | |
8f8ecbad | 2027 | moxa_ports[port].curBaud = baud; |
1da177e4 LT |
2028 | return (baud); |
2029 | } | |
2030 | ||
606d099c | 2031 | int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud) |
1da177e4 LT |
2032 | { |
2033 | void __iomem *ofsAddr; | |
2034 | tcflag_t cflag; | |
1da177e4 LT |
2035 | tcflag_t mode = 0; |
2036 | ||
8f8ecbad | 2037 | if (moxa_ports[port].chkPort == 0 || termio == 0) |
1da177e4 | 2038 | return (-1); |
8f8ecbad | 2039 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2040 | cflag = termio->c_cflag; /* termio->c_cflag */ |
2041 | ||
2042 | mode = termio->c_cflag & CSIZE; | |
2043 | if (mode == CS5) | |
2044 | mode = MX_CS5; | |
2045 | else if (mode == CS6) | |
2046 | mode = MX_CS6; | |
2047 | else if (mode == CS7) | |
2048 | mode = MX_CS7; | |
2049 | else if (mode == CS8) | |
2050 | mode = MX_CS8; | |
2051 | ||
2052 | if (termio->c_cflag & CSTOPB) { | |
2053 | if (mode == MX_CS5) | |
2054 | mode |= MX_STOP15; | |
2055 | else | |
2056 | mode |= MX_STOP2; | |
2057 | } else | |
2058 | mode |= MX_STOP1; | |
2059 | ||
2060 | if (termio->c_cflag & PARENB) { | |
2061 | if (termio->c_cflag & PARODD) | |
2062 | mode |= MX_PARODD; | |
2063 | else | |
2064 | mode |= MX_PAREVEN; | |
2065 | } else | |
2066 | mode |= MX_PARNONE; | |
2067 | ||
2068 | moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode); | |
2069 | ||
1da177e4 LT |
2070 | if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) || |
2071 | (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) { | |
c7bce309 | 2072 | if (baud >= 921600L) |
1da177e4 LT |
2073 | return (-1); |
2074 | } | |
db1acaa6 | 2075 | baud = MoxaPortSetBaud(port, baud); |
1da177e4 LT |
2076 | |
2077 | if (termio->c_iflag & (IXON | IXOFF | IXANY)) { | |
2078 | writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); | |
2079 | writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); | |
2080 | writeb(FC_SetXonXoff, ofsAddr + FuncCode); | |
6f56b658 | 2081 | moxa_wait_finish(ofsAddr); |
1da177e4 LT |
2082 | |
2083 | } | |
db1acaa6 | 2084 | return (baud); |
1da177e4 LT |
2085 | } |
2086 | ||
2087 | int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState) | |
2088 | { | |
2089 | ||
2090 | if (!MoxaPortIsValid(port)) | |
2091 | return (-1); | |
2092 | if (dtrState) { | |
8f8ecbad | 2093 | if (moxa_ports[port].lineCtrl & DTR_ON) |
1da177e4 LT |
2094 | *dtrState = 1; |
2095 | else | |
2096 | *dtrState = 0; | |
2097 | } | |
2098 | if (rtsState) { | |
8f8ecbad | 2099 | if (moxa_ports[port].lineCtrl & RTS_ON) |
1da177e4 LT |
2100 | *rtsState = 1; |
2101 | else | |
2102 | *rtsState = 0; | |
2103 | } | |
2104 | return (0); | |
2105 | } | |
2106 | ||
2107 | void MoxaPortLineCtrl(int port, int dtr, int rts) | |
2108 | { | |
2109 | void __iomem *ofsAddr; | |
2110 | int mode; | |
2111 | ||
8f8ecbad | 2112 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2113 | mode = 0; |
2114 | if (dtr) | |
2115 | mode |= DTR_ON; | |
2116 | if (rts) | |
2117 | mode |= RTS_ON; | |
8f8ecbad | 2118 | moxa_ports[port].lineCtrl = mode; |
1da177e4 LT |
2119 | moxafunc(ofsAddr, FC_LineControl, mode); |
2120 | } | |
2121 | ||
2122 | void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany) | |
2123 | { | |
2124 | void __iomem *ofsAddr; | |
2125 | int mode; | |
2126 | ||
8f8ecbad | 2127 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2128 | mode = 0; |
2129 | if (rts) | |
2130 | mode |= RTS_FlowCtl; | |
2131 | if (cts) | |
2132 | mode |= CTS_FlowCtl; | |
2133 | if (txflow) | |
2134 | mode |= Tx_FlowCtl; | |
2135 | if (rxflow) | |
2136 | mode |= Rx_FlowCtl; | |
2137 | if (txany) | |
2138 | mode |= IXM_IXANY; | |
2139 | moxafunc(ofsAddr, FC_SetFlowCtl, mode); | |
2140 | } | |
2141 | ||
2142 | int MoxaPortLineStatus(int port) | |
2143 | { | |
2144 | void __iomem *ofsAddr; | |
2145 | int val; | |
2146 | ||
8f8ecbad | 2147 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2148 | if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) || |
2149 | (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) { | |
2150 | moxafunc(ofsAddr, FC_LineStatus, 0); | |
2151 | val = readw(ofsAddr + FuncArg); | |
2152 | } else { | |
2153 | val = readw(ofsAddr + FlagStat) >> 4; | |
2154 | } | |
2155 | val &= 0x0B; | |
2156 | if (val & 8) { | |
2157 | val |= 4; | |
8f8ecbad JS |
2158 | if ((moxa_ports[port].DCDState & DCD_oldstate) == 0) |
2159 | moxa_ports[port].DCDState = (DCD_oldstate | DCD_changed); | |
1da177e4 | 2160 | } else { |
8f8ecbad JS |
2161 | if (moxa_ports[port].DCDState & DCD_oldstate) |
2162 | moxa_ports[port].DCDState = DCD_changed; | |
1da177e4 LT |
2163 | } |
2164 | val &= 7; | |
2165 | return (val); | |
2166 | } | |
2167 | ||
2168 | int MoxaPortDCDChange(int port) | |
2169 | { | |
2170 | int n; | |
2171 | ||
8f8ecbad | 2172 | if (moxa_ports[port].chkPort == 0) |
1da177e4 | 2173 | return (0); |
8f8ecbad JS |
2174 | n = moxa_ports[port].DCDState; |
2175 | moxa_ports[port].DCDState &= ~DCD_changed; | |
1da177e4 LT |
2176 | n &= DCD_changed; |
2177 | return (n); | |
2178 | } | |
2179 | ||
2180 | int MoxaPortDCDON(int port) | |
2181 | { | |
2182 | int n; | |
2183 | ||
8f8ecbad | 2184 | if (moxa_ports[port].chkPort == 0) |
1da177e4 | 2185 | return (0); |
8f8ecbad | 2186 | if (moxa_ports[port].DCDState & DCD_oldstate) |
1da177e4 LT |
2187 | n = 1; |
2188 | else | |
2189 | n = 0; | |
2190 | return (n); | |
2191 | } | |
2192 | ||
1da177e4 LT |
2193 | int MoxaPortWriteData(int port, unsigned char * buffer, int len) |
2194 | { | |
2195 | int c, total, i; | |
2196 | ushort tail; | |
2197 | int cnt; | |
2198 | ushort head, tx_mask, spage, epage; | |
2199 | ushort pageno, pageofs, bufhead; | |
2200 | void __iomem *baseAddr, *ofsAddr, *ofs; | |
2201 | ||
8f8ecbad JS |
2202 | ofsAddr = moxa_ports[port].tableAddr; |
2203 | baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem; | |
1da177e4 LT |
2204 | tx_mask = readw(ofsAddr + TX_mask); |
2205 | spage = readw(ofsAddr + Page_txb); | |
2206 | epage = readw(ofsAddr + EndPage_txb); | |
2207 | tail = readw(ofsAddr + TXwptr); | |
2208 | head = readw(ofsAddr + TXrptr); | |
2209 | c = (head > tail) ? (head - tail - 1) | |
2210 | : (head - tail + tx_mask); | |
2211 | if (c > len) | |
2212 | c = len; | |
2213 | moxaLog.txcnt[port] += c; | |
2214 | total = c; | |
2215 | if (spage == epage) { | |
2216 | bufhead = readw(ofsAddr + Ofs_txb); | |
2217 | writew(spage, baseAddr + Control_reg); | |
2218 | while (c > 0) { | |
2219 | if (head > tail) | |
2220 | len = head - tail - 1; | |
2221 | else | |
2222 | len = tx_mask + 1 - tail; | |
2223 | len = (c > len) ? len : c; | |
2224 | ofs = baseAddr + DynPage_addr + bufhead + tail; | |
2225 | for (i = 0; i < len; i++) | |
2226 | writeb(*buffer++, ofs + i); | |
2227 | tail = (tail + len) & tx_mask; | |
2228 | c -= len; | |
2229 | } | |
2230 | writew(tail, ofsAddr + TXwptr); | |
2231 | } else { | |
2232 | len = c; | |
2233 | pageno = spage + (tail >> 13); | |
2234 | pageofs = tail & Page_mask; | |
2235 | do { | |
2236 | cnt = Page_size - pageofs; | |
2237 | if (cnt > c) | |
2238 | cnt = c; | |
2239 | c -= cnt; | |
2240 | writeb(pageno, baseAddr + Control_reg); | |
2241 | ofs = baseAddr + DynPage_addr + pageofs; | |
2242 | for (i = 0; i < cnt; i++) | |
2243 | writeb(*buffer++, ofs + i); | |
2244 | if (c == 0) { | |
2245 | writew((tail + len) & tx_mask, ofsAddr + TXwptr); | |
2246 | break; | |
2247 | } | |
2248 | if (++pageno == epage) | |
2249 | pageno = spage; | |
2250 | pageofs = 0; | |
2251 | } while (1); | |
2252 | } | |
2253 | writeb(1, ofsAddr + CD180TXirq); /* start to send */ | |
2254 | return (total); | |
2255 | } | |
2256 | ||
33f0f88f | 2257 | int MoxaPortReadData(int port, struct tty_struct *tty) |
1da177e4 LT |
2258 | { |
2259 | register ushort head, pageofs; | |
2260 | int i, count, cnt, len, total, remain; | |
2261 | ushort tail, rx_mask, spage, epage; | |
2262 | ushort pageno, bufhead; | |
2263 | void __iomem *baseAddr, *ofsAddr, *ofs; | |
2264 | ||
8f8ecbad JS |
2265 | ofsAddr = moxa_ports[port].tableAddr; |
2266 | baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem; | |
1da177e4 LT |
2267 | head = readw(ofsAddr + RXrptr); |
2268 | tail = readw(ofsAddr + RXwptr); | |
2269 | rx_mask = readw(ofsAddr + RX_mask); | |
2270 | spage = readw(ofsAddr + Page_rxb); | |
2271 | epage = readw(ofsAddr + EndPage_rxb); | |
2272 | count = (tail >= head) ? (tail - head) | |
2273 | : (tail - head + rx_mask + 1); | |
2274 | if (count == 0) | |
33f0f88f | 2275 | return 0; |
1da177e4 | 2276 | |
33f0f88f | 2277 | total = count; |
1da177e4 LT |
2278 | remain = count - total; |
2279 | moxaLog.rxcnt[port] += total; | |
2280 | count = total; | |
2281 | if (spage == epage) { | |
2282 | bufhead = readw(ofsAddr + Ofs_rxb); | |
2283 | writew(spage, baseAddr + Control_reg); | |
2284 | while (count > 0) { | |
2285 | if (tail >= head) | |
2286 | len = tail - head; | |
2287 | else | |
2288 | len = rx_mask + 1 - head; | |
2289 | len = (count > len) ? len : count; | |
2290 | ofs = baseAddr + DynPage_addr + bufhead + head; | |
2291 | for (i = 0; i < len; i++) | |
33f0f88f | 2292 | tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL); |
1da177e4 LT |
2293 | head = (head + len) & rx_mask; |
2294 | count -= len; | |
2295 | } | |
2296 | writew(head, ofsAddr + RXrptr); | |
2297 | } else { | |
2298 | len = count; | |
2299 | pageno = spage + (head >> 13); | |
2300 | pageofs = head & Page_mask; | |
2301 | do { | |
2302 | cnt = Page_size - pageofs; | |
2303 | if (cnt > count) | |
2304 | cnt = count; | |
2305 | count -= cnt; | |
2306 | writew(pageno, baseAddr + Control_reg); | |
2307 | ofs = baseAddr + DynPage_addr + pageofs; | |
2308 | for (i = 0; i < cnt; i++) | |
33f0f88f | 2309 | tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL); |
1da177e4 LT |
2310 | if (count == 0) { |
2311 | writew((head + len) & rx_mask, ofsAddr + RXrptr); | |
2312 | break; | |
2313 | } | |
2314 | if (++pageno == epage) | |
2315 | pageno = spage; | |
2316 | pageofs = 0; | |
2317 | } while (1); | |
2318 | } | |
2319 | if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) { | |
2320 | moxaLowWaterChk = 1; | |
8f8ecbad | 2321 | moxa_ports[port].lowChkFlag = 1; |
1da177e4 LT |
2322 | } |
2323 | return (total); | |
2324 | } | |
2325 | ||
2326 | ||
2327 | int MoxaPortTxQueue(int port) | |
2328 | { | |
2329 | void __iomem *ofsAddr; | |
2330 | ushort rptr, wptr, mask; | |
2331 | int len; | |
2332 | ||
8f8ecbad | 2333 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2334 | rptr = readw(ofsAddr + TXrptr); |
2335 | wptr = readw(ofsAddr + TXwptr); | |
2336 | mask = readw(ofsAddr + TX_mask); | |
2337 | len = (wptr - rptr) & mask; | |
2338 | return (len); | |
2339 | } | |
2340 | ||
2341 | int MoxaPortTxFree(int port) | |
2342 | { | |
2343 | void __iomem *ofsAddr; | |
2344 | ushort rptr, wptr, mask; | |
2345 | int len; | |
2346 | ||
8f8ecbad | 2347 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2348 | rptr = readw(ofsAddr + TXrptr); |
2349 | wptr = readw(ofsAddr + TXwptr); | |
2350 | mask = readw(ofsAddr + TX_mask); | |
2351 | len = mask - ((wptr - rptr) & mask); | |
2352 | return (len); | |
2353 | } | |
2354 | ||
2355 | int MoxaPortRxQueue(int port) | |
2356 | { | |
2357 | void __iomem *ofsAddr; | |
2358 | ushort rptr, wptr, mask; | |
2359 | int len; | |
2360 | ||
8f8ecbad | 2361 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2362 | rptr = readw(ofsAddr + RXrptr); |
2363 | wptr = readw(ofsAddr + RXwptr); | |
2364 | mask = readw(ofsAddr + RX_mask); | |
2365 | len = (wptr - rptr) & mask; | |
2366 | return (len); | |
2367 | } | |
2368 | ||
2369 | ||
2370 | void MoxaPortTxDisable(int port) | |
2371 | { | |
2372 | void __iomem *ofsAddr; | |
2373 | ||
8f8ecbad | 2374 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2375 | moxafunc(ofsAddr, FC_SetXoffState, Magic_code); |
2376 | } | |
2377 | ||
2378 | void MoxaPortTxEnable(int port) | |
2379 | { | |
2380 | void __iomem *ofsAddr; | |
2381 | ||
8f8ecbad | 2382 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2383 | moxafunc(ofsAddr, FC_SetXonState, Magic_code); |
2384 | } | |
2385 | ||
2386 | ||
2387 | int MoxaPortResetBrkCnt(int port) | |
2388 | { | |
2389 | ushort cnt; | |
8f8ecbad JS |
2390 | cnt = moxa_ports[port].breakCnt; |
2391 | moxa_ports[port].breakCnt = 0; | |
1da177e4 LT |
2392 | return (cnt); |
2393 | } | |
2394 | ||
2395 | ||
2396 | void MoxaPortSendBreak(int port, int ms100) | |
2397 | { | |
2398 | void __iomem *ofsAddr; | |
2399 | ||
8f8ecbad | 2400 | ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2401 | if (ms100) { |
2402 | moxafunc(ofsAddr, FC_SendBreak, Magic_code); | |
24c032f1 | 2403 | msleep(ms100 * 10); |
1da177e4 LT |
2404 | } else { |
2405 | moxafunc(ofsAddr, FC_SendBreak, Magic_code); | |
24c032f1 | 2406 | msleep(250); |
1da177e4 LT |
2407 | } |
2408 | moxafunc(ofsAddr, FC_StopBreak, Magic_code); | |
2409 | } | |
2410 | ||
8f8ecbad | 2411 | static int moxa_get_serial_info(struct moxa_port *info, |
1da177e4 LT |
2412 | struct serial_struct __user *retinfo) |
2413 | { | |
2414 | struct serial_struct tmp; | |
2415 | ||
2416 | memset(&tmp, 0, sizeof(tmp)); | |
2417 | tmp.type = info->type; | |
2418 | tmp.line = info->port; | |
2419 | tmp.port = 0; | |
2420 | tmp.irq = 0; | |
2421 | tmp.flags = info->asyncflags; | |
2422 | tmp.baud_base = 921600; | |
2423 | tmp.close_delay = info->close_delay; | |
2424 | tmp.closing_wait = info->closing_wait; | |
2425 | tmp.custom_divisor = 0; | |
2426 | tmp.hub6 = 0; | |
2427 | if(copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2428 | return -EFAULT; | |
2429 | return (0); | |
2430 | } | |
2431 | ||
2432 | ||
8f8ecbad | 2433 | static int moxa_set_serial_info(struct moxa_port *info, |
1da177e4 LT |
2434 | struct serial_struct __user *new_info) |
2435 | { | |
2436 | struct serial_struct new_serial; | |
2437 | ||
2438 | if(copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2439 | return -EFAULT; | |
2440 | ||
2441 | if ((new_serial.irq != 0) || | |
2442 | (new_serial.port != 0) || | |
2443 | // (new_serial.type != info->type) || | |
2444 | (new_serial.custom_divisor != 0) || | |
2445 | (new_serial.baud_base != 921600)) | |
2446 | return (-EPERM); | |
2447 | ||
2448 | if (!capable(CAP_SYS_ADMIN)) { | |
2449 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
2450 | (info->asyncflags & ~ASYNC_USR_MASK))) | |
2451 | return (-EPERM); | |
2452 | } else { | |
2453 | info->close_delay = new_serial.close_delay * HZ / 100; | |
2454 | info->closing_wait = new_serial.closing_wait * HZ / 100; | |
2455 | } | |
2456 | ||
2457 | new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); | |
2458 | new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); | |
2459 | ||
2460 | if (new_serial.type == PORT_16550A) { | |
2461 | MoxaSetFifo(info->port, 1); | |
2462 | } else { | |
2463 | MoxaSetFifo(info->port, 0); | |
2464 | } | |
2465 | ||
2466 | info->type = new_serial.type; | |
2467 | return (0); | |
2468 | } | |
2469 | ||
2470 | ||
2471 | ||
2472 | /***************************************************************************** | |
2473 | * Static local functions: * | |
2474 | *****************************************************************************/ | |
1da177e4 LT |
2475 | static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg) |
2476 | { | |
2477 | ||
2478 | writew(arg, ofsAddr + FuncArg); | |
2479 | writew(cmd, ofsAddr + FuncCode); | |
6f56b658 | 2480 | moxa_wait_finish(ofsAddr); |
1da177e4 LT |
2481 | } |
2482 | ||
6f56b658 | 2483 | static void moxa_wait_finish(void __iomem *ofsAddr) |
1da177e4 LT |
2484 | { |
2485 | unsigned long i, j; | |
2486 | ||
2487 | i = jiffies; | |
2488 | while (readw(ofsAddr + FuncCode) != 0) { | |
2489 | j = jiffies; | |
2490 | if ((j - i) > moxaFuncTout) { | |
2491 | return; | |
2492 | } | |
2493 | } | |
2494 | } | |
2495 | ||
6f56b658 | 2496 | static void moxa_low_water_check(void __iomem *ofsAddr) |
1da177e4 LT |
2497 | { |
2498 | int len; | |
2499 | ushort rptr, wptr, mask; | |
2500 | ||
2501 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
2502 | rptr = readw(ofsAddr + RXrptr); | |
2503 | wptr = readw(ofsAddr + RXwptr); | |
2504 | mask = readw(ofsAddr + RX_mask); | |
2505 | len = (wptr - rptr) & mask; | |
2506 | if (len <= Low_water) | |
2507 | moxafunc(ofsAddr, FC_SendXon, 0); | |
2508 | } | |
2509 | } | |
2510 | ||
2511 | static int moxaloadbios(int cardno, unsigned char __user *tmp, int len) | |
2512 | { | |
2513 | void __iomem *baseAddr; | |
2514 | int i; | |
2515 | ||
a2f72982 | 2516 | if(len < 0 || len > sizeof(moxaBuff)) |
2517 | return -EINVAL; | |
1da177e4 LT |
2518 | if(copy_from_user(moxaBuff, tmp, len)) |
2519 | return -EFAULT; | |
8f8ecbad | 2520 | baseAddr = moxa_boards[cardno].basemem; |
1da177e4 | 2521 | writeb(HW_reset, baseAddr + Control_reg); /* reset */ |
24c032f1 | 2522 | msleep(10); |
1da177e4 LT |
2523 | for (i = 0; i < 4096; i++) |
2524 | writeb(0, baseAddr + i); /* clear fix page */ | |
2525 | for (i = 0; i < len; i++) | |
2526 | writeb(moxaBuff[i], baseAddr + i); /* download BIOS */ | |
2527 | writeb(0, baseAddr + Control_reg); /* restart */ | |
2528 | return (0); | |
2529 | } | |
2530 | ||
2531 | static int moxafindcard(int cardno) | |
2532 | { | |
2533 | void __iomem *baseAddr; | |
2534 | ushort tmp; | |
2535 | ||
8f8ecbad | 2536 | baseAddr = moxa_boards[cardno].basemem; |
1da177e4 LT |
2537 | switch (moxa_boards[cardno].boardType) { |
2538 | case MOXA_BOARD_C218_ISA: | |
2539 | case MOXA_BOARD_C218_PCI: | |
2540 | if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) { | |
2541 | return (-1); | |
2542 | } | |
2543 | break; | |
2544 | case MOXA_BOARD_CP204J: | |
2545 | if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) { | |
2546 | return (-1); | |
2547 | } | |
2548 | break; | |
2549 | default: | |
2550 | if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) { | |
2551 | return (-1); | |
2552 | } | |
2553 | if ((tmp = readw(baseAddr + C320_status)) != STS_init) { | |
2554 | return (-2); | |
2555 | } | |
2556 | } | |
2557 | return (0); | |
2558 | } | |
2559 | ||
2560 | static int moxaload320b(int cardno, unsigned char __user *tmp, int len) | |
2561 | { | |
2562 | void __iomem *baseAddr; | |
2563 | int i; | |
2564 | ||
a2f72982 | 2565 | if(len < 0 || len > sizeof(moxaBuff)) |
1da177e4 LT |
2566 | return -EINVAL; |
2567 | if(copy_from_user(moxaBuff, tmp, len)) | |
2568 | return -EFAULT; | |
8f8ecbad | 2569 | baseAddr = moxa_boards[cardno].basemem; |
1da177e4 LT |
2570 | writew(len - 7168 - 2, baseAddr + C320bapi_len); |
2571 | writeb(1, baseAddr + Control_reg); /* Select Page 1 */ | |
2572 | for (i = 0; i < 7168; i++) | |
2573 | writeb(moxaBuff[i], baseAddr + DynPage_addr + i); | |
2574 | writeb(2, baseAddr + Control_reg); /* Select Page 2 */ | |
2575 | for (i = 0; i < (len - 7168); i++) | |
2576 | writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i); | |
2577 | return (0); | |
2578 | } | |
2579 | ||
2580 | static int moxaloadcode(int cardno, unsigned char __user *tmp, int len) | |
2581 | { | |
2582 | void __iomem *baseAddr, *ofsAddr; | |
2583 | int retval, port, i; | |
2584 | ||
a2f72982 | 2585 | if(len < 0 || len > sizeof(moxaBuff)) |
2586 | return -EINVAL; | |
1da177e4 LT |
2587 | if(copy_from_user(moxaBuff, tmp, len)) |
2588 | return -EFAULT; | |
8f8ecbad | 2589 | baseAddr = moxa_boards[cardno].basemem; |
1da177e4 LT |
2590 | switch (moxa_boards[cardno].boardType) { |
2591 | case MOXA_BOARD_C218_ISA: | |
2592 | case MOXA_BOARD_C218_PCI: | |
2593 | case MOXA_BOARD_CP204J: | |
2594 | retval = moxaloadc218(cardno, baseAddr, len); | |
2595 | if (retval) | |
2596 | return (retval); | |
2597 | port = cardno * MAX_PORTS_PER_BOARD; | |
2598 | for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) { | |
8f8ecbad JS |
2599 | struct moxa_port *p = &moxa_ports[port]; |
2600 | ||
2601 | p->chkPort = 1; | |
2602 | p->curBaud = 9600L; | |
2603 | p->DCDState = 0; | |
2604 | p->tableAddr = baseAddr + Extern_table + Extern_size * i; | |
2605 | ofsAddr = p->tableAddr; | |
1da177e4 LT |
2606 | writew(C218rx_mask, ofsAddr + RX_mask); |
2607 | writew(C218tx_mask, ofsAddr + TX_mask); | |
2608 | writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); | |
2609 | writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); | |
2610 | ||
2611 | writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); | |
2612 | writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); | |
2613 | ||
2614 | } | |
2615 | break; | |
2616 | default: | |
2617 | retval = moxaloadc320(cardno, baseAddr, len, | |
2618 | &moxa_boards[cardno].numPorts); | |
2619 | if (retval) | |
2620 | return (retval); | |
2621 | port = cardno * MAX_PORTS_PER_BOARD; | |
2622 | for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) { | |
8f8ecbad JS |
2623 | struct moxa_port *p = &moxa_ports[port]; |
2624 | ||
2625 | p->chkPort = 1; | |
2626 | p->curBaud = 9600L; | |
2627 | p->DCDState = 0; | |
2628 | p->tableAddr = baseAddr + Extern_table + Extern_size * i; | |
2629 | ofsAddr = p->tableAddr; | |
1da177e4 LT |
2630 | if (moxa_boards[cardno].numPorts == 8) { |
2631 | writew(C320p8rx_mask, ofsAddr + RX_mask); | |
2632 | writew(C320p8tx_mask, ofsAddr + TX_mask); | |
2633 | writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); | |
2634 | writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); | |
2635 | writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); | |
2636 | writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); | |
2637 | ||
2638 | } else if (moxa_boards[cardno].numPorts == 16) { | |
2639 | writew(C320p16rx_mask, ofsAddr + RX_mask); | |
2640 | writew(C320p16tx_mask, ofsAddr + TX_mask); | |
2641 | writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); | |
2642 | writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); | |
2643 | writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); | |
2644 | writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); | |
2645 | ||
2646 | } else if (moxa_boards[cardno].numPorts == 24) { | |
2647 | writew(C320p24rx_mask, ofsAddr + RX_mask); | |
2648 | writew(C320p24tx_mask, ofsAddr + TX_mask); | |
2649 | writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); | |
2650 | writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); | |
2651 | writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); | |
2652 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
2653 | } else if (moxa_boards[cardno].numPorts == 32) { | |
2654 | writew(C320p32rx_mask, ofsAddr + RX_mask); | |
2655 | writew(C320p32tx_mask, ofsAddr + TX_mask); | |
2656 | writew(C320p32tx_ofs, ofsAddr + Ofs_txb); | |
2657 | writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); | |
2658 | writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); | |
2659 | writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); | |
2660 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
2661 | } | |
2662 | } | |
2663 | break; | |
2664 | } | |
8f8ecbad | 2665 | moxa_boards[cardno].loadstat = 1; |
1da177e4 LT |
2666 | return (0); |
2667 | } | |
2668 | ||
2669 | static int moxaloadc218(int cardno, void __iomem *baseAddr, int len) | |
2670 | { | |
2671 | char retry; | |
2672 | int i, j, len1, len2; | |
2673 | ushort usum, *ptr, keycode; | |
2674 | ||
2675 | if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J) | |
2676 | keycode = CP204J_KeyCode; | |
2677 | else | |
2678 | keycode = C218_KeyCode; | |
2679 | usum = 0; | |
2680 | len1 = len >> 1; | |
2681 | ptr = (ushort *) moxaBuff; | |
2682 | for (i = 0; i < len1; i++) | |
01cfaf0d | 2683 | usum += le16_to_cpu(*(ptr + i)); |
1da177e4 LT |
2684 | retry = 0; |
2685 | do { | |
2686 | len1 = len >> 1; | |
2687 | j = 0; | |
2688 | while (len1) { | |
2689 | len2 = (len1 > 2048) ? 2048 : len1; | |
2690 | len1 -= len2; | |
2691 | for (i = 0; i < len2 << 1; i++) | |
2692 | writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i); | |
2693 | j += i; | |
2694 | ||
2695 | writew(len2, baseAddr + C218DLoad_len); | |
2696 | writew(0, baseAddr + C218_key); | |
2697 | for (i = 0; i < 100; i++) { | |
2698 | if (readw(baseAddr + C218_key) == keycode) | |
2699 | break; | |
24c032f1 | 2700 | msleep(10); |
1da177e4 LT |
2701 | } |
2702 | if (readw(baseAddr + C218_key) != keycode) { | |
2703 | return (-1); | |
2704 | } | |
2705 | } | |
2706 | writew(0, baseAddr + C218DLoad_len); | |
2707 | writew(usum, baseAddr + C218check_sum); | |
2708 | writew(0, baseAddr + C218_key); | |
2709 | for (i = 0; i < 100; i++) { | |
2710 | if (readw(baseAddr + C218_key) == keycode) | |
2711 | break; | |
24c032f1 | 2712 | msleep(10); |
1da177e4 LT |
2713 | } |
2714 | retry++; | |
2715 | } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3)); | |
2716 | if (readb(baseAddr + C218chksum_ok) != 1) { | |
2717 | return (-1); | |
2718 | } | |
2719 | writew(0, baseAddr + C218_key); | |
2720 | for (i = 0; i < 100; i++) { | |
2721 | if (readw(baseAddr + Magic_no) == Magic_code) | |
2722 | break; | |
24c032f1 | 2723 | msleep(10); |
1da177e4 LT |
2724 | } |
2725 | if (readw(baseAddr + Magic_no) != Magic_code) { | |
2726 | return (-1); | |
2727 | } | |
2728 | writew(1, baseAddr + Disable_IRQ); | |
2729 | writew(0, baseAddr + Magic_no); | |
2730 | for (i = 0; i < 100; i++) { | |
2731 | if (readw(baseAddr + Magic_no) == Magic_code) | |
2732 | break; | |
24c032f1 | 2733 | msleep(10); |
1da177e4 LT |
2734 | } |
2735 | if (readw(baseAddr + Magic_no) != Magic_code) { | |
2736 | return (-1); | |
2737 | } | |
2738 | moxaCard = 1; | |
8f8ecbad JS |
2739 | moxa_boards[cardno].intNdx = baseAddr + IRQindex; |
2740 | moxa_boards[cardno].intPend = baseAddr + IRQpending; | |
2741 | moxa_boards[cardno].intTable = baseAddr + IRQtable; | |
1da177e4 LT |
2742 | return (0); |
2743 | } | |
2744 | ||
2745 | static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts) | |
2746 | { | |
2747 | ushort usum; | |
2748 | int i, j, wlen, len2, retry; | |
2749 | ushort *uptr; | |
2750 | ||
2751 | usum = 0; | |
2752 | wlen = len >> 1; | |
2753 | uptr = (ushort *) moxaBuff; | |
2754 | for (i = 0; i < wlen; i++) | |
01cfaf0d | 2755 | usum += le16_to_cpu(uptr[i]); |
1da177e4 LT |
2756 | retry = 0; |
2757 | j = 0; | |
2758 | do { | |
2759 | while (wlen) { | |
2760 | if (wlen > 2048) | |
2761 | len2 = 2048; | |
2762 | else | |
2763 | len2 = wlen; | |
2764 | wlen -= len2; | |
2765 | len2 <<= 1; | |
2766 | for (i = 0; i < len2; i++) | |
2767 | writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i); | |
2768 | len2 >>= 1; | |
2769 | j += i; | |
2770 | writew(len2, baseAddr + C320DLoad_len); | |
2771 | writew(0, baseAddr + C320_key); | |
2772 | for (i = 0; i < 10; i++) { | |
2773 | if (readw(baseAddr + C320_key) == C320_KeyCode) | |
2774 | break; | |
24c032f1 | 2775 | msleep(10); |
1da177e4 LT |
2776 | } |
2777 | if (readw(baseAddr + C320_key) != C320_KeyCode) | |
2778 | return (-1); | |
2779 | } | |
2780 | writew(0, baseAddr + C320DLoad_len); | |
2781 | writew(usum, baseAddr + C320check_sum); | |
2782 | writew(0, baseAddr + C320_key); | |
2783 | for (i = 0; i < 10; i++) { | |
2784 | if (readw(baseAddr + C320_key) == C320_KeyCode) | |
2785 | break; | |
24c032f1 | 2786 | msleep(10); |
1da177e4 LT |
2787 | } |
2788 | retry++; | |
2789 | } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3)); | |
2790 | if (readb(baseAddr + C320chksum_ok) != 1) | |
2791 | return (-1); | |
2792 | writew(0, baseAddr + C320_key); | |
2793 | for (i = 0; i < 600; i++) { | |
2794 | if (readw(baseAddr + Magic_no) == Magic_code) | |
2795 | break; | |
24c032f1 | 2796 | msleep(10); |
1da177e4 LT |
2797 | } |
2798 | if (readw(baseAddr + Magic_no) != Magic_code) | |
2799 | return (-100); | |
2800 | ||
2801 | if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ | |
2802 | writew(0x3800, baseAddr + TMS320_PORT1); | |
2803 | writew(0x3900, baseAddr + TMS320_PORT2); | |
2804 | writew(28499, baseAddr + TMS320_CLOCK); | |
2805 | } else { | |
2806 | writew(0x3200, baseAddr + TMS320_PORT1); | |
2807 | writew(0x3400, baseAddr + TMS320_PORT2); | |
2808 | writew(19999, baseAddr + TMS320_CLOCK); | |
2809 | } | |
2810 | writew(1, baseAddr + Disable_IRQ); | |
2811 | writew(0, baseAddr + Magic_no); | |
2812 | for (i = 0; i < 500; i++) { | |
2813 | if (readw(baseAddr + Magic_no) == Magic_code) | |
2814 | break; | |
24c032f1 | 2815 | msleep(10); |
1da177e4 LT |
2816 | } |
2817 | if (readw(baseAddr + Magic_no) != Magic_code) | |
2818 | return (-102); | |
2819 | ||
2820 | j = readw(baseAddr + Module_cnt); | |
2821 | if (j <= 0) | |
2822 | return (-101); | |
2823 | *numPorts = j * 8; | |
2824 | writew(j, baseAddr + Module_no); | |
2825 | writew(0, baseAddr + Magic_no); | |
2826 | for (i = 0; i < 600; i++) { | |
2827 | if (readw(baseAddr + Magic_no) == Magic_code) | |
2828 | break; | |
24c032f1 | 2829 | msleep(10); |
1da177e4 LT |
2830 | } |
2831 | if (readw(baseAddr + Magic_no) != Magic_code) | |
2832 | return (-102); | |
2833 | moxaCard = 1; | |
8f8ecbad JS |
2834 | moxa_boards[cardno].intNdx = baseAddr + IRQindex; |
2835 | moxa_boards[cardno].intPend = baseAddr + IRQpending; | |
2836 | moxa_boards[cardno].intTable = baseAddr + IRQtable; | |
1da177e4 LT |
2837 | return (0); |
2838 | } | |
2839 | ||
1da177e4 LT |
2840 | static void MoxaSetFifo(int port, int enable) |
2841 | { | |
8f8ecbad | 2842 | void __iomem *ofsAddr = moxa_ports[port].tableAddr; |
1da177e4 LT |
2843 | |
2844 | if (!enable) { | |
2845 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); | |
2846 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); | |
2847 | } else { | |
2848 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); | |
2849 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); | |
2850 | } | |
2851 | } |