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> | |
03718234 | 28 | #include <linux/firmware.h> |
1da177e4 LT |
29 | #include <linux/signal.h> |
30 | #include <linux/sched.h> | |
31 | #include <linux/timer.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/tty.h> | |
34 | #include <linux/tty_flip.h> | |
35 | #include <linux/major.h> | |
36 | #include <linux/string.h> | |
37 | #include <linux/fcntl.h> | |
38 | #include <linux/ptrace.h> | |
39 | #include <linux/serial.h> | |
40 | #include <linux/tty_driver.h> | |
41 | #include <linux/delay.h> | |
42 | #include <linux/pci.h> | |
43 | #include <linux/init.h> | |
44 | #include <linux/bitops.h> | |
45 | ||
46 | #include <asm/system.h> | |
47 | #include <asm/io.h> | |
48 | #include <asm/uaccess.h> | |
49 | ||
03718234 JS |
50 | #include "moxa.h" |
51 | ||
11324edd | 52 | #define MOXA_VERSION "5.1k" |
1da177e4 | 53 | |
03718234 JS |
54 | #define MOXA_FW_HDRLEN 32 |
55 | ||
11324edd JS |
56 | #define MOXAMAJOR 172 |
57 | #define MOXACUMAJOR 173 | |
1da177e4 | 58 | |
11324edd | 59 | #define MAX_BOARDS 4 /* Don't change this value */ |
1da177e4 | 60 | #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ |
11324edd | 61 | #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) |
1da177e4 LT |
62 | |
63 | /* | |
64 | * Define the Moxa PCI vendor and device IDs. | |
65 | */ | |
11324edd JS |
66 | #define MOXA_BUS_TYPE_ISA 0 |
67 | #define MOXA_BUS_TYPE_PCI 1 | |
1da177e4 | 68 | |
1da177e4 LT |
69 | enum { |
70 | MOXA_BOARD_C218_PCI = 1, | |
71 | MOXA_BOARD_C218_ISA, | |
72 | MOXA_BOARD_C320_PCI, | |
73 | MOXA_BOARD_C320_ISA, | |
74 | MOXA_BOARD_CP204J, | |
75 | }; | |
76 | ||
77 | static char *moxa_brdname[] = | |
78 | { | |
79 | "C218 Turbo PCI series", | |
80 | "C218 Turbo ISA series", | |
81 | "C320 Turbo PCI series", | |
82 | "C320 Turbo ISA series", | |
83 | "CP-204J series", | |
84 | }; | |
85 | ||
86 | #ifdef CONFIG_PCI | |
87 | static struct pci_device_id moxa_pcibrds[] = { | |
5ebb4078 JS |
88 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), |
89 | .driver_data = MOXA_BOARD_C218_PCI }, | |
90 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), | |
91 | .driver_data = MOXA_BOARD_C320_PCI }, | |
92 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), | |
93 | .driver_data = MOXA_BOARD_CP204J }, | |
1da177e4 LT |
94 | { 0 } |
95 | }; | |
96 | MODULE_DEVICE_TABLE(pci, moxa_pcibrds); | |
97 | #endif /* CONFIG_PCI */ | |
98 | ||
03718234 JS |
99 | struct moxa_port; |
100 | ||
8f8ecbad | 101 | static struct moxa_board_conf { |
1da177e4 LT |
102 | int boardType; |
103 | int numPorts; | |
1da177e4 | 104 | int busType; |
8f8ecbad | 105 | |
810ab09b | 106 | unsigned int ready; |
8f8ecbad | 107 | |
03718234 JS |
108 | struct moxa_port *ports; |
109 | ||
8f8ecbad JS |
110 | void __iomem *basemem; |
111 | void __iomem *intNdx; | |
112 | void __iomem *intPend; | |
113 | void __iomem *intTable; | |
114 | } moxa_boards[MAX_BOARDS]; | |
115 | ||
116 | struct mxser_mstatus { | |
117 | tcflag_t cflag; | |
118 | int cts; | |
119 | int dsr; | |
120 | int ri; | |
121 | int dcd; | |
9dff89cd | 122 | }; |
1da177e4 | 123 | |
8f8ecbad JS |
124 | struct moxaq_str { |
125 | int inq; | |
126 | int outq; | |
127 | }; | |
1da177e4 | 128 | |
8f8ecbad | 129 | struct moxa_port { |
b4173f45 | 130 | struct moxa_board_conf *board; |
7bcf97d1 JS |
131 | struct tty_struct *tty; |
132 | void __iomem *tableAddr; | |
133 | ||
1da177e4 | 134 | int type; |
1da177e4 | 135 | int close_delay; |
a8f5cda0 | 136 | unsigned int count; |
1da177e4 | 137 | int asyncflags; |
1da177e4 | 138 | int cflag; |
7bcf97d1 | 139 | unsigned long statusflags; |
1da177e4 | 140 | wait_queue_head_t open_wait; |
1da177e4 | 141 | |
7bcf97d1 JS |
142 | u8 DCDState; |
143 | u8 lineCtrl; | |
144 | u8 lowChkFlag; | |
8f8ecbad | 145 | }; |
1da177e4 | 146 | |
74d7d97b JS |
147 | struct mon_str { |
148 | int tick; | |
149 | int rxcnt[MAX_PORTS]; | |
150 | int txcnt[MAX_PORTS]; | |
151 | }; | |
152 | ||
1da177e4 LT |
153 | /* statusflags */ |
154 | #define TXSTOPPED 0x1 | |
155 | #define LOWWAIT 0x2 | |
156 | #define EMPTYWAIT 0x4 | |
157 | #define THROTTLE 0x8 | |
158 | ||
1da177e4 LT |
159 | #define SERIAL_DO_RESTART |
160 | ||
1da177e4 LT |
161 | #define WAKEUP_CHARS 256 |
162 | ||
1da177e4 | 163 | static int ttymajor = MOXAMAJOR; |
74d7d97b JS |
164 | static struct mon_str moxaLog; |
165 | static unsigned int moxaFuncTout = HZ / 2; | |
7bcf97d1 | 166 | static unsigned int moxaLowWaterChk; |
a8f5cda0 | 167 | static DEFINE_MUTEX(moxa_openlock); |
1da177e4 LT |
168 | /* Variables for insmod */ |
169 | #ifdef MODULE | |
d353eca4 JS |
170 | static unsigned long baseaddr[MAX_BOARDS]; |
171 | static unsigned int type[MAX_BOARDS]; | |
172 | static unsigned int numports[MAX_BOARDS]; | |
1da177e4 LT |
173 | #endif |
174 | ||
175 | MODULE_AUTHOR("William Chen"); | |
176 | MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); | |
177 | MODULE_LICENSE("GPL"); | |
178 | #ifdef MODULE | |
d353eca4 JS |
179 | module_param_array(type, uint, NULL, 0); |
180 | MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); | |
181 | module_param_array(baseaddr, ulong, NULL, 0); | |
182 | MODULE_PARM_DESC(baseaddr, "base address"); | |
183 | module_param_array(numports, uint, NULL, 0); | |
184 | MODULE_PARM_DESC(numports, "numports (ignored for C218)"); | |
1da177e4 LT |
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); | |
1da177e4 LT |
199 | static void moxa_throttle(struct tty_struct *); |
200 | static void moxa_unthrottle(struct tty_struct *); | |
606d099c | 201 | static void moxa_set_termios(struct tty_struct *, struct ktermios *); |
1da177e4 LT |
202 | static void moxa_stop(struct tty_struct *); |
203 | static void moxa_start(struct tty_struct *); | |
204 | static void moxa_hangup(struct tty_struct *); | |
205 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file); | |
206 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
207 | unsigned int set, unsigned int clear); | |
208 | static void moxa_poll(unsigned long); | |
db1acaa6 | 209 | static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); |
6f56b658 | 210 | static void moxa_setup_empty_event(struct tty_struct *); |
6f56b658 | 211 | static void moxa_shut_down(struct moxa_port *); |
1da177e4 LT |
212 | /* |
213 | * moxa board interface functions: | |
214 | */ | |
b4173f45 JS |
215 | static void MoxaPortEnable(struct moxa_port *); |
216 | static void MoxaPortDisable(struct moxa_port *); | |
217 | static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); | |
218 | static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); | |
219 | static void MoxaPortLineCtrl(struct moxa_port *, int, int); | |
220 | static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); | |
221 | static int MoxaPortLineStatus(struct moxa_port *); | |
b4173f45 | 222 | static void MoxaPortFlushData(struct moxa_port *, int); |
2108eba5 | 223 | static int MoxaPortWriteData(struct moxa_port *, const unsigned char *, int); |
7bcf97d1 | 224 | static int MoxaPortReadData(struct moxa_port *); |
b4173f45 JS |
225 | static int MoxaPortTxQueue(struct moxa_port *); |
226 | static int MoxaPortRxQueue(struct moxa_port *); | |
227 | static int MoxaPortTxFree(struct moxa_port *); | |
228 | static void MoxaPortTxDisable(struct moxa_port *); | |
229 | static void MoxaPortTxEnable(struct moxa_port *); | |
8f8ecbad JS |
230 | static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); |
231 | static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); | |
b4173f45 | 232 | static void MoxaSetFifo(struct moxa_port *port, int enable); |
1da177e4 | 233 | |
74d7d97b JS |
234 | /* |
235 | * I/O functions | |
236 | */ | |
237 | ||
238 | static void moxa_wait_finish(void __iomem *ofsAddr) | |
239 | { | |
240 | unsigned long end = jiffies + moxaFuncTout; | |
241 | ||
242 | while (readw(ofsAddr + FuncCode) != 0) | |
243 | if (time_after(jiffies, end)) | |
244 | return; | |
245 | if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) | |
246 | printk(KERN_WARNING "moxa function expired\n"); | |
247 | } | |
248 | ||
249 | static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg) | |
250 | { | |
251 | writew(arg, ofsAddr + FuncArg); | |
252 | writew(cmd, ofsAddr + FuncCode); | |
253 | moxa_wait_finish(ofsAddr); | |
254 | } | |
255 | ||
7bcf97d1 JS |
256 | static void moxa_low_water_check(void __iomem *ofsAddr) |
257 | { | |
258 | u16 rptr, wptr, mask, len; | |
259 | ||
260 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
261 | rptr = readw(ofsAddr + RXrptr); | |
262 | wptr = readw(ofsAddr + RXwptr); | |
263 | mask = readw(ofsAddr + RX_mask); | |
264 | len = (wptr - rptr) & mask; | |
265 | if (len <= Low_water) | |
266 | moxafunc(ofsAddr, FC_SendXon, 0); | |
267 | } | |
268 | } | |
269 | ||
74d7d97b JS |
270 | /* |
271 | * TTY operations | |
272 | */ | |
273 | ||
274 | static int moxa_ioctl(struct tty_struct *tty, struct file *file, | |
275 | unsigned int cmd, unsigned long arg) | |
276 | { | |
277 | struct moxa_port *ch = tty->driver_data; | |
278 | void __user *argp = (void __user *)arg; | |
a8f5cda0 | 279 | int status, ret = 0; |
74d7d97b JS |
280 | |
281 | if (tty->index == MAX_PORTS) { | |
282 | if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && | |
283 | cmd != MOXA_GETMSTATUS) | |
284 | return -EINVAL; | |
285 | } else if (!ch) | |
286 | return -ENODEV; | |
287 | ||
288 | switch (cmd) { | |
289 | case MOXA_GETDATACOUNT: | |
290 | moxaLog.tick = jiffies; | |
a8f5cda0 JS |
291 | if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) |
292 | ret = -EFAULT; | |
293 | break; | |
74d7d97b JS |
294 | case MOXA_FLUSH_QUEUE: |
295 | MoxaPortFlushData(ch, arg); | |
a8f5cda0 | 296 | break; |
74d7d97b JS |
297 | case MOXA_GET_IOQUEUE: { |
298 | struct moxaq_str __user *argm = argp; | |
299 | struct moxaq_str tmp; | |
300 | struct moxa_port *p; | |
301 | unsigned int i, j; | |
302 | ||
a8f5cda0 | 303 | mutex_lock(&moxa_openlock); |
74d7d97b JS |
304 | for (i = 0; i < MAX_BOARDS; i++) { |
305 | p = moxa_boards[i].ports; | |
306 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
307 | memset(&tmp, 0, sizeof(tmp)); | |
308 | if (moxa_boards[i].ready) { | |
309 | tmp.inq = MoxaPortRxQueue(p); | |
310 | tmp.outq = MoxaPortTxQueue(p); | |
311 | } | |
a8f5cda0 JS |
312 | if (copy_to_user(argm, &tmp, sizeof(tmp))) { |
313 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 314 | return -EFAULT; |
a8f5cda0 | 315 | } |
74d7d97b JS |
316 | } |
317 | } | |
a8f5cda0 JS |
318 | mutex_unlock(&moxa_openlock); |
319 | break; | |
74d7d97b JS |
320 | } case MOXA_GET_OQUEUE: |
321 | status = MoxaPortTxQueue(ch); | |
a8f5cda0 JS |
322 | ret = put_user(status, (unsigned long __user *)argp); |
323 | break; | |
74d7d97b JS |
324 | case MOXA_GET_IQUEUE: |
325 | status = MoxaPortRxQueue(ch); | |
a8f5cda0 JS |
326 | ret = put_user(status, (unsigned long __user *)argp); |
327 | break; | |
74d7d97b JS |
328 | case MOXA_GETMSTATUS: { |
329 | struct mxser_mstatus __user *argm = argp; | |
330 | struct mxser_mstatus tmp; | |
331 | struct moxa_port *p; | |
332 | unsigned int i, j; | |
333 | ||
a8f5cda0 | 334 | mutex_lock(&moxa_openlock); |
74d7d97b JS |
335 | for (i = 0; i < MAX_BOARDS; i++) { |
336 | p = moxa_boards[i].ports; | |
337 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
338 | memset(&tmp, 0, sizeof(tmp)); | |
339 | if (!moxa_boards[i].ready) | |
340 | goto copy; | |
341 | ||
342 | status = MoxaPortLineStatus(p); | |
343 | if (status & 1) | |
344 | tmp.cts = 1; | |
345 | if (status & 2) | |
346 | tmp.dsr = 1; | |
347 | if (status & 4) | |
348 | tmp.dcd = 1; | |
349 | ||
350 | if (!p->tty || !p->tty->termios) | |
351 | tmp.cflag = p->cflag; | |
352 | else | |
353 | tmp.cflag = p->tty->termios->c_cflag; | |
354 | copy: | |
a8f5cda0 JS |
355 | if (copy_to_user(argm, &tmp, sizeof(tmp))) { |
356 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 357 | return -EFAULT; |
a8f5cda0 | 358 | } |
74d7d97b JS |
359 | } |
360 | } | |
a8f5cda0 JS |
361 | mutex_unlock(&moxa_openlock); |
362 | break; | |
74d7d97b JS |
363 | } |
364 | case TIOCGSERIAL: | |
a8f5cda0 JS |
365 | mutex_lock(&moxa_openlock); |
366 | ret = moxa_get_serial_info(ch, argp); | |
367 | mutex_unlock(&moxa_openlock); | |
368 | break; | |
74d7d97b | 369 | case TIOCSSERIAL: |
a8f5cda0 JS |
370 | mutex_lock(&moxa_openlock); |
371 | ret = moxa_set_serial_info(ch, argp); | |
372 | mutex_unlock(&moxa_openlock); | |
373 | break; | |
374 | default: | |
375 | ret = -ENOIOCTLCMD; | |
74d7d97b | 376 | } |
a8f5cda0 | 377 | return ret; |
74d7d97b JS |
378 | } |
379 | ||
380 | static void moxa_break_ctl(struct tty_struct *tty, int state) | |
381 | { | |
382 | struct moxa_port *port = tty->driver_data; | |
383 | ||
384 | moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, | |
385 | Magic_code); | |
386 | } | |
387 | ||
b68e31d0 | 388 | static const struct tty_operations moxa_ops = { |
1da177e4 LT |
389 | .open = moxa_open, |
390 | .close = moxa_close, | |
391 | .write = moxa_write, | |
392 | .write_room = moxa_write_room, | |
393 | .flush_buffer = moxa_flush_buffer, | |
394 | .chars_in_buffer = moxa_chars_in_buffer, | |
395 | .flush_chars = moxa_flush_chars, | |
396 | .put_char = moxa_put_char, | |
397 | .ioctl = moxa_ioctl, | |
398 | .throttle = moxa_throttle, | |
399 | .unthrottle = moxa_unthrottle, | |
400 | .set_termios = moxa_set_termios, | |
401 | .stop = moxa_stop, | |
402 | .start = moxa_start, | |
403 | .hangup = moxa_hangup, | |
74d7d97b | 404 | .break_ctl = moxa_break_ctl, |
1da177e4 LT |
405 | .tiocmget = moxa_tiocmget, |
406 | .tiocmset = moxa_tiocmset, | |
407 | }; | |
408 | ||
aa7e5221 | 409 | static struct tty_driver *moxaDriver; |
aa7e5221 | 410 | static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); |
34af946a | 411 | static DEFINE_SPINLOCK(moxa_lock); |
33f0f88f | 412 | |
74d7d97b JS |
413 | /* |
414 | * HW init | |
415 | */ | |
416 | ||
03718234 JS |
417 | static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) |
418 | { | |
419 | switch (brd->boardType) { | |
420 | case MOXA_BOARD_C218_ISA: | |
421 | case MOXA_BOARD_C218_PCI: | |
422 | if (model != 1) | |
423 | goto err; | |
424 | break; | |
425 | case MOXA_BOARD_CP204J: | |
426 | if (model != 3) | |
427 | goto err; | |
428 | break; | |
429 | default: | |
430 | if (model != 2) | |
431 | goto err; | |
432 | break; | |
433 | } | |
434 | return 0; | |
435 | err: | |
436 | return -EINVAL; | |
437 | } | |
438 | ||
439 | static int moxa_check_fw(const void *ptr) | |
440 | { | |
441 | const __le16 *lptr = ptr; | |
442 | ||
443 | if (*lptr != cpu_to_le16(0x7980)) | |
444 | return -EINVAL; | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, | |
450 | size_t len) | |
451 | { | |
452 | void __iomem *baseAddr = brd->basemem; | |
453 | u16 tmp; | |
454 | ||
455 | writeb(HW_reset, baseAddr + Control_reg); /* reset */ | |
456 | msleep(10); | |
457 | memset_io(baseAddr, 0, 4096); | |
458 | memcpy_toio(baseAddr, buf, len); /* download BIOS */ | |
459 | writeb(0, baseAddr + Control_reg); /* restart */ | |
460 | ||
461 | msleep(2000); | |
462 | ||
463 | switch (brd->boardType) { | |
464 | case MOXA_BOARD_C218_ISA: | |
465 | case MOXA_BOARD_C218_PCI: | |
466 | tmp = readw(baseAddr + C218_key); | |
467 | if (tmp != C218_KeyCode) | |
468 | goto err; | |
469 | break; | |
470 | case MOXA_BOARD_CP204J: | |
471 | tmp = readw(baseAddr + C218_key); | |
472 | if (tmp != CP204J_KeyCode) | |
473 | goto err; | |
474 | break; | |
475 | default: | |
476 | tmp = readw(baseAddr + C320_key); | |
477 | if (tmp != C320_KeyCode) | |
478 | goto err; | |
479 | tmp = readw(baseAddr + C320_status); | |
480 | if (tmp != STS_init) { | |
481 | printk(KERN_ERR "moxa: bios upload failed -- CPU/Basic " | |
482 | "module not found\n"); | |
483 | return -EIO; | |
484 | } | |
485 | break; | |
486 | } | |
487 | ||
488 | return 0; | |
489 | err: | |
490 | printk(KERN_ERR "moxa: bios upload failed -- board not found\n"); | |
491 | return -EIO; | |
492 | } | |
493 | ||
494 | static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, | |
495 | size_t len) | |
496 | { | |
497 | void __iomem *baseAddr = brd->basemem; | |
498 | ||
499 | if (len < 7168) { | |
500 | printk(KERN_ERR "moxa: invalid 320 bios -- too short\n"); | |
501 | return -EINVAL; | |
502 | } | |
503 | ||
504 | writew(len - 7168 - 2, baseAddr + C320bapi_len); | |
505 | writeb(1, baseAddr + Control_reg); /* Select Page 1 */ | |
506 | memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); | |
507 | writeb(2, baseAddr + Control_reg); /* Select Page 2 */ | |
508 | memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
5292bcd3 | 513 | static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, |
03718234 JS |
514 | size_t len) |
515 | { | |
516 | void __iomem *baseAddr = brd->basemem; | |
517 | const u16 *uptr = ptr; | |
518 | size_t wlen, len2, j; | |
5292bcd3 JS |
519 | unsigned long key, loadbuf, loadlen, checksum, checksum_ok; |
520 | unsigned int i, retry, c320; | |
03718234 JS |
521 | u16 usum, keycode; |
522 | ||
5292bcd3 JS |
523 | c320 = brd->boardType == MOXA_BOARD_C320_PCI || |
524 | brd->boardType == MOXA_BOARD_C320_ISA; | |
525 | keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : | |
526 | C218_KeyCode; | |
03718234 | 527 | |
5292bcd3 JS |
528 | switch (brd->boardType) { |
529 | case MOXA_BOARD_CP204J: | |
530 | case MOXA_BOARD_C218_ISA: | |
531 | case MOXA_BOARD_C218_PCI: | |
532 | key = C218_key; | |
533 | loadbuf = C218_LoadBuf; | |
534 | loadlen = C218DLoad_len; | |
535 | checksum = C218check_sum; | |
536 | checksum_ok = C218chksum_ok; | |
537 | break; | |
538 | default: | |
539 | key = C320_key; | |
540 | keycode = C320_KeyCode; | |
541 | loadbuf = C320_LoadBuf; | |
542 | loadlen = C320DLoad_len; | |
543 | checksum = C320check_sum; | |
544 | checksum_ok = C320chksum_ok; | |
545 | break; | |
03718234 | 546 | } |
03718234 JS |
547 | |
548 | usum = 0; | |
549 | wlen = len >> 1; | |
550 | for (i = 0; i < wlen; i++) | |
551 | usum += le16_to_cpu(uptr[i]); | |
552 | retry = 0; | |
553 | do { | |
554 | wlen = len >> 1; | |
555 | j = 0; | |
556 | while (wlen) { | |
557 | len2 = (wlen > 2048) ? 2048 : wlen; | |
558 | wlen -= len2; | |
5292bcd3 | 559 | memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); |
03718234 | 560 | j += len2 << 1; |
5292bcd3 JS |
561 | |
562 | writew(len2, baseAddr + loadlen); | |
563 | writew(0, baseAddr + key); | |
564 | for (i = 0; i < 100; i++) { | |
565 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
566 | break; |
567 | msleep(10); | |
568 | } | |
5292bcd3 | 569 | if (readw(baseAddr + key) != keycode) |
03718234 JS |
570 | return -EIO; |
571 | } | |
5292bcd3 JS |
572 | writew(0, baseAddr + loadlen); |
573 | writew(usum, baseAddr + checksum); | |
574 | writew(0, baseAddr + key); | |
575 | for (i = 0; i < 100; i++) { | |
576 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
577 | break; |
578 | msleep(10); | |
579 | } | |
580 | retry++; | |
5292bcd3 JS |
581 | } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); |
582 | if (readb(baseAddr + checksum_ok) != 1) | |
03718234 JS |
583 | return -EIO; |
584 | ||
5292bcd3 | 585 | writew(0, baseAddr + key); |
03718234 JS |
586 | for (i = 0; i < 600; i++) { |
587 | if (readw(baseAddr + Magic_no) == Magic_code) | |
588 | break; | |
589 | msleep(10); | |
590 | } | |
591 | if (readw(baseAddr + Magic_no) != Magic_code) | |
592 | return -EIO; | |
593 | ||
5292bcd3 JS |
594 | if (c320) { |
595 | if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ | |
596 | writew(0x3800, baseAddr + TMS320_PORT1); | |
597 | writew(0x3900, baseAddr + TMS320_PORT2); | |
598 | writew(28499, baseAddr + TMS320_CLOCK); | |
599 | } else { | |
600 | writew(0x3200, baseAddr + TMS320_PORT1); | |
601 | writew(0x3400, baseAddr + TMS320_PORT2); | |
602 | writew(19999, baseAddr + TMS320_CLOCK); | |
603 | } | |
03718234 JS |
604 | } |
605 | writew(1, baseAddr + Disable_IRQ); | |
606 | writew(0, baseAddr + Magic_no); | |
607 | for (i = 0; i < 500; i++) { | |
608 | if (readw(baseAddr + Magic_no) == Magic_code) | |
609 | break; | |
610 | msleep(10); | |
611 | } | |
612 | if (readw(baseAddr + Magic_no) != Magic_code) | |
613 | return -EIO; | |
614 | ||
5292bcd3 JS |
615 | if (c320) { |
616 | j = readw(baseAddr + Module_cnt); | |
617 | if (j <= 0) | |
618 | return -EIO; | |
619 | brd->numPorts = j * 8; | |
620 | writew(j, baseAddr + Module_no); | |
621 | writew(0, baseAddr + Magic_no); | |
622 | for (i = 0; i < 600; i++) { | |
623 | if (readw(baseAddr + Magic_no) == Magic_code) | |
624 | break; | |
625 | msleep(10); | |
626 | } | |
627 | if (readw(baseAddr + Magic_no) != Magic_code) | |
628 | return -EIO; | |
03718234 | 629 | } |
03718234 JS |
630 | brd->intNdx = baseAddr + IRQindex; |
631 | brd->intPend = baseAddr + IRQpending; | |
632 | brd->intTable = baseAddr + IRQtable; | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, | |
638 | size_t len) | |
639 | { | |
640 | void __iomem *ofsAddr, *baseAddr = brd->basemem; | |
641 | struct moxa_port *port; | |
642 | int retval, i; | |
643 | ||
644 | if (len % 2) { | |
5292bcd3 | 645 | printk(KERN_ERR "moxa: bios length is not even\n"); |
03718234 JS |
646 | return -EINVAL; |
647 | } | |
648 | ||
5292bcd3 JS |
649 | retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ |
650 | if (retval) | |
651 | return retval; | |
652 | ||
03718234 JS |
653 | switch (brd->boardType) { |
654 | case MOXA_BOARD_C218_ISA: | |
655 | case MOXA_BOARD_C218_PCI: | |
656 | case MOXA_BOARD_CP204J: | |
03718234 JS |
657 | port = brd->ports; |
658 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 659 | port->board = brd; |
03718234 JS |
660 | port->DCDState = 0; |
661 | port->tableAddr = baseAddr + Extern_table + | |
662 | Extern_size * i; | |
663 | ofsAddr = port->tableAddr; | |
664 | writew(C218rx_mask, ofsAddr + RX_mask); | |
665 | writew(C218tx_mask, ofsAddr + TX_mask); | |
666 | writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); | |
667 | writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); | |
668 | ||
669 | writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); | |
670 | writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); | |
671 | ||
672 | } | |
673 | break; | |
674 | default: | |
03718234 JS |
675 | port = brd->ports; |
676 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 677 | port->board = brd; |
03718234 JS |
678 | port->DCDState = 0; |
679 | port->tableAddr = baseAddr + Extern_table + | |
680 | Extern_size * i; | |
681 | ofsAddr = port->tableAddr; | |
682 | switch (brd->numPorts) { | |
683 | case 8: | |
684 | writew(C320p8rx_mask, ofsAddr + RX_mask); | |
685 | writew(C320p8tx_mask, ofsAddr + TX_mask); | |
686 | writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); | |
687 | writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); | |
688 | writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); | |
689 | writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); | |
690 | ||
691 | break; | |
692 | case 16: | |
693 | writew(C320p16rx_mask, ofsAddr + RX_mask); | |
694 | writew(C320p16tx_mask, ofsAddr + TX_mask); | |
695 | writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); | |
696 | writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); | |
697 | writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); | |
698 | writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); | |
699 | break; | |
700 | ||
701 | case 24: | |
702 | writew(C320p24rx_mask, ofsAddr + RX_mask); | |
703 | writew(C320p24tx_mask, ofsAddr + TX_mask); | |
704 | writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); | |
705 | writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); | |
706 | writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); | |
707 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
708 | break; | |
709 | case 32: | |
710 | writew(C320p32rx_mask, ofsAddr + RX_mask); | |
711 | writew(C320p32tx_mask, ofsAddr + TX_mask); | |
712 | writew(C320p32tx_ofs, ofsAddr + Ofs_txb); | |
713 | writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); | |
714 | writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); | |
715 | writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); | |
716 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
717 | break; | |
718 | } | |
719 | } | |
720 | break; | |
721 | } | |
03718234 JS |
722 | return 0; |
723 | } | |
724 | ||
725 | static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) | |
726 | { | |
727 | void *ptr = fw->data; | |
728 | char rsn[64]; | |
729 | u16 lens[5]; | |
730 | size_t len; | |
731 | unsigned int a, lenp, lencnt; | |
732 | int ret = -EINVAL; | |
733 | struct { | |
734 | __le32 magic; /* 0x34303430 */ | |
735 | u8 reserved1[2]; | |
736 | u8 type; /* UNIX = 3 */ | |
737 | u8 model; /* C218T=1, C320T=2, CP204=3 */ | |
738 | u8 reserved2[8]; | |
739 | __le16 len[5]; | |
740 | } *hdr = ptr; | |
741 | ||
742 | BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); | |
743 | ||
744 | if (fw->size < MOXA_FW_HDRLEN) { | |
745 | strcpy(rsn, "too short (even header won't fit)"); | |
746 | goto err; | |
747 | } | |
748 | if (hdr->magic != cpu_to_le32(0x30343034)) { | |
749 | sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); | |
750 | goto err; | |
751 | } | |
752 | if (hdr->type != 3) { | |
753 | sprintf(rsn, "not for linux, type is %u", hdr->type); | |
754 | goto err; | |
755 | } | |
756 | if (moxa_check_fw_model(brd, hdr->model)) { | |
757 | sprintf(rsn, "not for this card, model is %u", hdr->model); | |
758 | goto err; | |
759 | } | |
760 | ||
761 | len = MOXA_FW_HDRLEN; | |
762 | lencnt = hdr->model == 2 ? 5 : 3; | |
763 | for (a = 0; a < ARRAY_SIZE(lens); a++) { | |
764 | lens[a] = le16_to_cpu(hdr->len[a]); | |
765 | if (lens[a] && len + lens[a] <= fw->size && | |
766 | moxa_check_fw(&fw->data[len])) | |
767 | printk(KERN_WARNING "moxa firmware: unexpected input " | |
768 | "at offset %u, but going on\n", (u32)len); | |
769 | if (!lens[a] && a < lencnt) { | |
770 | sprintf(rsn, "too few entries in fw file"); | |
771 | goto err; | |
772 | } | |
773 | len += lens[a]; | |
774 | } | |
775 | ||
776 | if (len != fw->size) { | |
777 | sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, | |
778 | (u32)len); | |
779 | goto err; | |
780 | } | |
781 | ||
782 | ptr += MOXA_FW_HDRLEN; | |
783 | lenp = 0; /* bios */ | |
784 | ||
785 | strcpy(rsn, "read above"); | |
786 | ||
787 | ret = moxa_load_bios(brd, ptr, lens[lenp]); | |
788 | if (ret) | |
789 | goto err; | |
790 | ||
791 | /* we skip the tty section (lens[1]), since we don't need it */ | |
792 | ptr += lens[lenp] + lens[lenp + 1]; | |
793 | lenp += 2; /* comm */ | |
794 | ||
795 | if (hdr->model == 2) { | |
796 | ret = moxa_load_320b(brd, ptr, lens[lenp]); | |
797 | if (ret) | |
798 | goto err; | |
799 | /* skip another tty */ | |
800 | ptr += lens[lenp] + lens[lenp + 1]; | |
801 | lenp += 2; | |
802 | } | |
803 | ||
804 | ret = moxa_load_code(brd, ptr, lens[lenp]); | |
805 | if (ret) | |
806 | goto err; | |
807 | ||
808 | return 0; | |
809 | err: | |
810 | printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); | |
811 | return ret; | |
812 | } | |
813 | ||
814 | static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) | |
815 | { | |
816 | const struct firmware *fw; | |
817 | const char *file; | |
810ab09b JS |
818 | struct moxa_port *p; |
819 | unsigned int i; | |
03718234 JS |
820 | int ret; |
821 | ||
810ab09b JS |
822 | brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), |
823 | GFP_KERNEL); | |
824 | if (brd->ports == NULL) { | |
825 | printk(KERN_ERR "cannot allocate memory for ports\n"); | |
826 | ret = -ENOMEM; | |
827 | goto err; | |
828 | } | |
829 | ||
830 | for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { | |
831 | p->type = PORT_16550A; | |
832 | p->close_delay = 5 * HZ / 10; | |
833 | p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; | |
834 | init_waitqueue_head(&p->open_wait); | |
810ab09b JS |
835 | } |
836 | ||
03718234 JS |
837 | switch (brd->boardType) { |
838 | case MOXA_BOARD_C218_ISA: | |
839 | case MOXA_BOARD_C218_PCI: | |
840 | file = "c218tunx.cod"; | |
841 | break; | |
842 | case MOXA_BOARD_CP204J: | |
843 | file = "cp204unx.cod"; | |
844 | break; | |
845 | default: | |
846 | file = "c320tunx.cod"; | |
847 | break; | |
848 | } | |
849 | ||
850 | ret = request_firmware(&fw, file, dev); | |
851 | if (ret) { | |
852 | printk(KERN_ERR "request_firmware failed\n"); | |
810ab09b | 853 | goto err_free; |
03718234 JS |
854 | } |
855 | ||
856 | ret = moxa_load_fw(brd, fw); | |
857 | ||
858 | release_firmware(fw); | |
810ab09b JS |
859 | |
860 | if (ret) | |
861 | goto err_free; | |
862 | ||
2a541341 | 863 | spin_lock_bh(&moxa_lock); |
810ab09b | 864 | brd->ready = 1; |
0bcc4caa JS |
865 | if (!timer_pending(&moxaTimer)) |
866 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
2a541341 | 867 | spin_unlock_bh(&moxa_lock); |
0bcc4caa | 868 | |
810ab09b JS |
869 | return 0; |
870 | err_free: | |
871 | kfree(brd->ports); | |
872 | err: | |
03718234 JS |
873 | return ret; |
874 | } | |
875 | ||
810ab09b JS |
876 | static void moxa_board_deinit(struct moxa_board_conf *brd) |
877 | { | |
a8f5cda0 JS |
878 | unsigned int a, opened; |
879 | ||
880 | mutex_lock(&moxa_openlock); | |
7bcf97d1 | 881 | spin_lock_bh(&moxa_lock); |
810ab09b | 882 | brd->ready = 0; |
7bcf97d1 | 883 | spin_unlock_bh(&moxa_lock); |
a8f5cda0 JS |
884 | |
885 | /* pci hot-un-plug support */ | |
886 | for (a = 0; a < brd->numPorts; a++) | |
887 | if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) | |
888 | tty_hangup(brd->ports[a].tty); | |
889 | while (1) { | |
890 | opened = 0; | |
891 | for (a = 0; a < brd->numPorts; a++) | |
892 | if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) | |
893 | opened++; | |
894 | mutex_unlock(&moxa_openlock); | |
895 | if (!opened) | |
896 | break; | |
897 | msleep(50); | |
898 | mutex_lock(&moxa_openlock); | |
899 | } | |
900 | ||
810ab09b JS |
901 | iounmap(brd->basemem); |
902 | brd->basemem = NULL; | |
903 | kfree(brd->ports); | |
904 | } | |
905 | ||
1da177e4 | 906 | #ifdef CONFIG_PCI |
9cde5bf0 JS |
907 | static int __devinit moxa_pci_probe(struct pci_dev *pdev, |
908 | const struct pci_device_id *ent) | |
1da177e4 | 909 | { |
9cde5bf0 JS |
910 | struct moxa_board_conf *board; |
911 | unsigned int i; | |
912 | int board_type = ent->driver_data; | |
913 | int retval; | |
914 | ||
915 | retval = pci_enable_device(pdev); | |
7aeb95da JS |
916 | if (retval) { |
917 | dev_err(&pdev->dev, "can't enable pci device\n"); | |
9cde5bf0 | 918 | goto err; |
7aeb95da | 919 | } |
9cde5bf0 JS |
920 | |
921 | for (i = 0; i < MAX_BOARDS; i++) | |
922 | if (moxa_boards[i].basemem == NULL) | |
923 | break; | |
924 | ||
925 | retval = -ENODEV; | |
926 | if (i >= MAX_BOARDS) { | |
7aeb95da | 927 | dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " |
9cde5bf0 JS |
928 | "found. Board is ignored.\n", MAX_BOARDS); |
929 | goto err; | |
930 | } | |
931 | ||
932 | board = &moxa_boards[i]; | |
e46a5e3f JS |
933 | |
934 | retval = pci_request_region(pdev, 2, "moxa-base"); | |
935 | if (retval) { | |
936 | dev_err(&pdev->dev, "can't request pci region 2\n"); | |
937 | goto err; | |
938 | } | |
939 | ||
940 | board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000); | |
7aeb95da JS |
941 | if (board->basemem == NULL) { |
942 | dev_err(&pdev->dev, "can't remap io space 2\n"); | |
e46a5e3f | 943 | goto err_reg; |
7aeb95da | 944 | } |
9cde5bf0 | 945 | |
1da177e4 LT |
946 | board->boardType = board_type; |
947 | switch (board_type) { | |
948 | case MOXA_BOARD_C218_ISA: | |
949 | case MOXA_BOARD_C218_PCI: | |
950 | board->numPorts = 8; | |
951 | break; | |
952 | ||
953 | case MOXA_BOARD_CP204J: | |
954 | board->numPorts = 4; | |
955 | break; | |
956 | default: | |
957 | board->numPorts = 0; | |
958 | break; | |
959 | } | |
960 | board->busType = MOXA_BUS_TYPE_PCI; | |
a784bf7c | 961 | |
03718234 JS |
962 | retval = moxa_init_board(board, &pdev->dev); |
963 | if (retval) | |
964 | goto err_base; | |
965 | ||
9cde5bf0 | 966 | pci_set_drvdata(pdev, board); |
1da177e4 LT |
967 | |
968 | return (0); | |
03718234 JS |
969 | err_base: |
970 | iounmap(board->basemem); | |
971 | board->basemem = NULL; | |
e46a5e3f JS |
972 | err_reg: |
973 | pci_release_region(pdev, 2); | |
9cde5bf0 JS |
974 | err: |
975 | return retval; | |
976 | } | |
977 | ||
978 | static void __devexit moxa_pci_remove(struct pci_dev *pdev) | |
979 | { | |
980 | struct moxa_board_conf *brd = pci_get_drvdata(pdev); | |
981 | ||
810ab09b JS |
982 | moxa_board_deinit(brd); |
983 | ||
e46a5e3f | 984 | pci_release_region(pdev, 2); |
1da177e4 | 985 | } |
a784bf7c JS |
986 | |
987 | static struct pci_driver moxa_pci_driver = { | |
988 | .name = "moxa", | |
989 | .id_table = moxa_pcibrds, | |
990 | .probe = moxa_pci_probe, | |
991 | .remove = __devexit_p(moxa_pci_remove) | |
992 | }; | |
1da177e4 LT |
993 | #endif /* CONFIG_PCI */ |
994 | ||
995 | static int __init moxa_init(void) | |
996 | { | |
810ab09b | 997 | unsigned int isabrds = 0; |
d353eca4 | 998 | int retval = 0; |
1da177e4 | 999 | |
7aeb95da JS |
1000 | printk(KERN_INFO "MOXA Intellio family driver version %s\n", |
1001 | MOXA_VERSION); | |
1da177e4 LT |
1002 | moxaDriver = alloc_tty_driver(MAX_PORTS + 1); |
1003 | if (!moxaDriver) | |
1004 | return -ENOMEM; | |
1005 | ||
1da177e4 | 1006 | moxaDriver->owner = THIS_MODULE; |
9b4e3b13 | 1007 | moxaDriver->name = "ttyMX"; |
1da177e4 LT |
1008 | moxaDriver->major = ttymajor; |
1009 | moxaDriver->minor_start = 0; | |
1010 | moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; | |
1011 | moxaDriver->subtype = SERIAL_TYPE_NORMAL; | |
1012 | moxaDriver->init_termios = tty_std_termios; | |
1da177e4 | 1013 | moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
606d099c AC |
1014 | moxaDriver->init_termios.c_ispeed = 9600; |
1015 | moxaDriver->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
1016 | moxaDriver->flags = TTY_DRIVER_REAL_RAW; |
1017 | tty_set_operations(moxaDriver, &moxa_ops); | |
1018 | ||
7aeb95da | 1019 | pr_debug("Moxa tty devices major number = %d\n", ttymajor); |
1da177e4 LT |
1020 | |
1021 | if (tty_register_driver(moxaDriver)) { | |
1022 | printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n"); | |
1023 | put_tty_driver(moxaDriver); | |
1024 | return -1; | |
1025 | } | |
1da177e4 | 1026 | |
d353eca4 | 1027 | /* Find the boards defined from module args. */ |
1da177e4 | 1028 | #ifdef MODULE |
d353eca4 JS |
1029 | { |
1030 | struct moxa_board_conf *brd = moxa_boards; | |
810ab09b | 1031 | unsigned int i; |
1da177e4 | 1032 | for (i = 0; i < MAX_BOARDS; i++) { |
d353eca4 JS |
1033 | if (!baseaddr[i]) |
1034 | break; | |
1035 | if (type[i] == MOXA_BOARD_C218_ISA || | |
1036 | type[i] == MOXA_BOARD_C320_ISA) { | |
7aeb95da | 1037 | pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", |
d353eca4 JS |
1038 | isabrds + 1, moxa_brdname[type[i] - 1], |
1039 | baseaddr[i]); | |
1040 | brd->boardType = type[i]; | |
1041 | brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : | |
1042 | numports[i]; | |
1043 | brd->busType = MOXA_BUS_TYPE_ISA; | |
1044 | brd->basemem = ioremap(baseaddr[i], 0x4000); | |
1045 | if (!brd->basemem) { | |
1046 | printk(KERN_ERR "moxa: can't remap %lx\n", | |
1047 | baseaddr[i]); | |
1da177e4 LT |
1048 | continue; |
1049 | } | |
03718234 JS |
1050 | if (moxa_init_board(brd, NULL)) { |
1051 | iounmap(brd->basemem); | |
1052 | brd->basemem = NULL; | |
1053 | continue; | |
1054 | } | |
d353eca4 JS |
1055 | |
1056 | brd++; | |
1057 | isabrds++; | |
1da177e4 LT |
1058 | } |
1059 | } | |
d353eca4 | 1060 | } |
1da177e4 | 1061 | #endif |
a784bf7c | 1062 | |
1da177e4 | 1063 | #ifdef CONFIG_PCI |
a784bf7c JS |
1064 | retval = pci_register_driver(&moxa_pci_driver); |
1065 | if (retval) { | |
1066 | printk(KERN_ERR "Can't register moxa pci driver!\n"); | |
d353eca4 | 1067 | if (isabrds) |
a784bf7c | 1068 | retval = 0; |
1da177e4 LT |
1069 | } |
1070 | #endif | |
a784bf7c | 1071 | |
a784bf7c | 1072 | return retval; |
1da177e4 LT |
1073 | } |
1074 | ||
1075 | static void __exit moxa_exit(void) | |
1076 | { | |
1077 | int i; | |
1078 | ||
9cde5bf0 | 1079 | #ifdef CONFIG_PCI |
a784bf7c | 1080 | pci_unregister_driver(&moxa_pci_driver); |
9cde5bf0 | 1081 | #endif |
a784bf7c | 1082 | |
810ab09b JS |
1083 | for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ |
1084 | if (moxa_boards[i].ready) | |
1085 | moxa_board_deinit(&moxa_boards[i]); | |
2a541341 JS |
1086 | |
1087 | del_timer_sync(&moxaTimer); | |
1088 | ||
1089 | if (tty_unregister_driver(moxaDriver)) | |
1090 | printk(KERN_ERR "Couldn't unregister MOXA Intellio family " | |
1091 | "serial driver\n"); | |
1092 | put_tty_driver(moxaDriver); | |
1da177e4 LT |
1093 | } |
1094 | ||
1095 | module_init(moxa_init); | |
1096 | module_exit(moxa_exit); | |
1097 | ||
a8f5cda0 JS |
1098 | static void moxa_close_port(struct moxa_port *ch) |
1099 | { | |
1100 | moxa_shut_down(ch); | |
1101 | MoxaPortFlushData(ch, 2); | |
1102 | ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; | |
1103 | ch->tty->driver_data = NULL; | |
1104 | ch->tty = NULL; | |
1105 | } | |
1106 | ||
1107 | static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, | |
1108 | struct moxa_port *ch) | |
1109 | { | |
1110 | DEFINE_WAIT(wait); | |
1111 | int retval = 0; | |
1112 | u8 dcd; | |
1113 | ||
1114 | while (1) { | |
1115 | prepare_to_wait(&ch->open_wait, &wait, TASK_INTERRUPTIBLE); | |
1116 | if (tty_hung_up_p(filp)) { | |
1117 | #ifdef SERIAL_DO_RESTART | |
1118 | retval = -ERESTARTSYS; | |
1119 | #else | |
1120 | retval = -EAGAIN; | |
1121 | #endif | |
1122 | break; | |
1123 | } | |
1124 | spin_lock_bh(&moxa_lock); | |
1125 | dcd = ch->DCDState; | |
1126 | spin_unlock_bh(&moxa_lock); | |
1127 | if (dcd) | |
1128 | break; | |
1129 | ||
1130 | if (signal_pending(current)) { | |
1131 | retval = -ERESTARTSYS; | |
1132 | break; | |
1133 | } | |
1134 | schedule(); | |
1135 | } | |
1136 | finish_wait(&ch->open_wait, &wait); | |
1137 | ||
1138 | return retval; | |
1139 | } | |
1140 | ||
1da177e4 LT |
1141 | static int moxa_open(struct tty_struct *tty, struct file *filp) |
1142 | { | |
810ab09b | 1143 | struct moxa_board_conf *brd; |
8f8ecbad | 1144 | struct moxa_port *ch; |
1da177e4 LT |
1145 | int port; |
1146 | int retval; | |
1da177e4 | 1147 | |
11324edd | 1148 | port = tty->index; |
1da177e4 | 1149 | if (port == MAX_PORTS) { |
74d7d97b | 1150 | return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; |
1da177e4 | 1151 | } |
a8f5cda0 JS |
1152 | if (mutex_lock_interruptible(&moxa_openlock)) |
1153 | return -ERESTARTSYS; | |
810ab09b | 1154 | brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; |
a8f5cda0 JS |
1155 | if (!brd->ready) { |
1156 | mutex_unlock(&moxa_openlock); | |
810ab09b | 1157 | return -ENODEV; |
a8f5cda0 | 1158 | } |
1da177e4 | 1159 | |
810ab09b | 1160 | ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; |
1da177e4 LT |
1161 | ch->count++; |
1162 | tty->driver_data = ch; | |
1163 | ch->tty = tty; | |
1164 | if (!(ch->asyncflags & ASYNC_INITIALIZED)) { | |
1165 | ch->statusflags = 0; | |
db1acaa6 | 1166 | moxa_set_tty_param(tty, tty->termios); |
b4173f45 JS |
1167 | MoxaPortLineCtrl(ch, 1, 1); |
1168 | MoxaPortEnable(ch); | |
a8f5cda0 | 1169 | MoxaSetFifo(ch, ch->type == PORT_16550A); |
1da177e4 LT |
1170 | ch->asyncflags |= ASYNC_INITIALIZED; |
1171 | } | |
a8f5cda0 | 1172 | mutex_unlock(&moxa_openlock); |
1da177e4 | 1173 | |
a8f5cda0 JS |
1174 | retval = 0; |
1175 | if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) | |
1176 | retval = moxa_block_till_ready(tty, filp, ch); | |
1177 | mutex_lock(&moxa_openlock); | |
1178 | if (retval) { | |
1179 | if (ch->count) /* 0 means already hung up... */ | |
1180 | if (--ch->count == 0) | |
1181 | moxa_close_port(ch); | |
1182 | } else | |
1183 | ch->asyncflags |= ASYNC_NORMAL_ACTIVE; | |
1184 | mutex_unlock(&moxa_openlock); | |
1da177e4 | 1185 | |
a8f5cda0 | 1186 | return retval; |
1da177e4 LT |
1187 | } |
1188 | ||
1189 | static void moxa_close(struct tty_struct *tty, struct file *filp) | |
1190 | { | |
8f8ecbad | 1191 | struct moxa_port *ch; |
1da177e4 LT |
1192 | int port; |
1193 | ||
11324edd | 1194 | port = tty->index; |
a8f5cda0 | 1195 | if (port == MAX_PORTS || tty_hung_up_p(filp)) |
1da177e4 | 1196 | return; |
1da177e4 | 1197 | |
a8f5cda0 JS |
1198 | mutex_lock(&moxa_openlock); |
1199 | ch = tty->driver_data; | |
1200 | if (ch == NULL) | |
1201 | goto unlock; | |
1202 | if (tty->count == 1 && ch->count != 1) { | |
7aeb95da JS |
1203 | printk(KERN_WARNING "moxa_close: bad serial port count; " |
1204 | "tty->count is 1, ch->count is %d\n", ch->count); | |
1da177e4 LT |
1205 | ch->count = 1; |
1206 | } | |
1207 | if (--ch->count < 0) { | |
7aeb95da JS |
1208 | printk(KERN_WARNING "moxa_close: bad serial port count, " |
1209 | "device=%s\n", tty->name); | |
1da177e4 LT |
1210 | ch->count = 0; |
1211 | } | |
a8f5cda0 JS |
1212 | if (ch->count) |
1213 | goto unlock; | |
1da177e4 LT |
1214 | |
1215 | ch->cflag = tty->termios->c_cflag; | |
1216 | if (ch->asyncflags & ASYNC_INITIALIZED) { | |
6f56b658 | 1217 | moxa_setup_empty_event(tty); |
1da177e4 | 1218 | tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ |
1da177e4 | 1219 | } |
1da177e4 | 1220 | |
a8f5cda0 JS |
1221 | moxa_close_port(ch); |
1222 | unlock: | |
1223 | mutex_unlock(&moxa_openlock); | |
1da177e4 LT |
1224 | } |
1225 | ||
1226 | static int moxa_write(struct tty_struct *tty, | |
1227 | const unsigned char *buf, int count) | |
1228 | { | |
b4173f45 | 1229 | struct moxa_port *ch = tty->driver_data; |
b4173f45 | 1230 | int len; |
1da177e4 | 1231 | |
1da177e4 | 1232 | if (ch == NULL) |
b4173f45 | 1233 | return 0; |
33f0f88f | 1234 | |
7bcf97d1 | 1235 | spin_lock_bh(&moxa_lock); |
2108eba5 | 1236 | len = MoxaPortWriteData(ch, buf, count); |
7bcf97d1 | 1237 | spin_unlock_bh(&moxa_lock); |
1da177e4 LT |
1238 | |
1239 | /********************************************* | |
1240 | if ( !(ch->statusflags & LOWWAIT) && | |
1241 | ((len != count) || (MoxaPortTxFree(port) <= 100)) ) | |
1242 | ************************************************/ | |
1243 | ch->statusflags |= LOWWAIT; | |
1244 | return (len); | |
1245 | } | |
1246 | ||
1247 | static int moxa_write_room(struct tty_struct *tty) | |
1248 | { | |
8f8ecbad | 1249 | struct moxa_port *ch; |
1da177e4 LT |
1250 | |
1251 | if (tty->stopped) | |
1252 | return (0); | |
b4173f45 | 1253 | ch = tty->driver_data; |
1da177e4 LT |
1254 | if (ch == NULL) |
1255 | return (0); | |
b4173f45 | 1256 | return MoxaPortTxFree(ch); |
1da177e4 LT |
1257 | } |
1258 | ||
1259 | static void moxa_flush_buffer(struct tty_struct *tty) | |
1260 | { | |
b4173f45 | 1261 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1262 | |
1263 | if (ch == NULL) | |
1264 | return; | |
b4173f45 | 1265 | MoxaPortFlushData(ch, 1); |
1da177e4 LT |
1266 | tty_wakeup(tty); |
1267 | } | |
1268 | ||
1269 | static int moxa_chars_in_buffer(struct tty_struct *tty) | |
1270 | { | |
b4173f45 | 1271 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1272 | int chars; |
1da177e4 LT |
1273 | |
1274 | /* | |
1275 | * Sigh...I have to check if driver_data is NULL here, because | |
1276 | * if an open() fails, the TTY subsystem eventually calls | |
1277 | * tty_wait_until_sent(), which calls the driver's chars_in_buffer() | |
1278 | * routine. And since the open() failed, we return 0 here. TDJ | |
1279 | */ | |
1280 | if (ch == NULL) | |
1281 | return (0); | |
b4173f45 | 1282 | chars = MoxaPortTxQueue(ch); |
1da177e4 LT |
1283 | if (chars) { |
1284 | /* | |
1285 | * Make it possible to wakeup anything waiting for output | |
1286 | * in tty_ioctl.c, etc. | |
1287 | */ | |
1288 | if (!(ch->statusflags & EMPTYWAIT)) | |
6f56b658 | 1289 | moxa_setup_empty_event(tty); |
1da177e4 LT |
1290 | } |
1291 | return (chars); | |
1292 | } | |
1293 | ||
1294 | static void moxa_flush_chars(struct tty_struct *tty) | |
1295 | { | |
1296 | /* | |
1297 | * Don't think I need this, because this is called to empty the TX | |
1298 | * buffer for the 16450, 16550, etc. | |
1299 | */ | |
1300 | } | |
1301 | ||
1302 | static void moxa_put_char(struct tty_struct *tty, unsigned char c) | |
1303 | { | |
b4173f45 | 1304 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1305 | |
1da177e4 LT |
1306 | if (ch == NULL) |
1307 | return; | |
7bcf97d1 | 1308 | spin_lock_bh(&moxa_lock); |
b4173f45 | 1309 | MoxaPortWriteData(ch, &c, 1); |
7bcf97d1 | 1310 | spin_unlock_bh(&moxa_lock); |
1da177e4 LT |
1311 | /************************************************ |
1312 | if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) ) | |
1313 | *************************************************/ | |
1314 | ch->statusflags |= LOWWAIT; | |
1315 | } | |
1316 | ||
1317 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file) | |
1318 | { | |
a8f5cda0 | 1319 | struct moxa_port *ch; |
1da177e4 LT |
1320 | int flag = 0, dtr, rts; |
1321 | ||
a8f5cda0 JS |
1322 | mutex_lock(&moxa_openlock); |
1323 | ch = tty->driver_data; | |
1324 | if (!ch) { | |
1325 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1326 | return -EINVAL; |
a8f5cda0 | 1327 | } |
1da177e4 | 1328 | |
b4173f45 | 1329 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1330 | if (dtr) |
1331 | flag |= TIOCM_DTR; | |
1332 | if (rts) | |
1333 | flag |= TIOCM_RTS; | |
b4173f45 | 1334 | dtr = MoxaPortLineStatus(ch); |
1da177e4 LT |
1335 | if (dtr & 1) |
1336 | flag |= TIOCM_CTS; | |
1337 | if (dtr & 2) | |
1338 | flag |= TIOCM_DSR; | |
1339 | if (dtr & 4) | |
1340 | flag |= TIOCM_CD; | |
a8f5cda0 | 1341 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1342 | return flag; |
1343 | } | |
1344 | ||
1345 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
1346 | unsigned int set, unsigned int clear) | |
1347 | { | |
a8f5cda0 | 1348 | struct moxa_port *ch; |
1da177e4 LT |
1349 | int port; |
1350 | int dtr, rts; | |
1351 | ||
11324edd | 1352 | port = tty->index; |
a8f5cda0 JS |
1353 | mutex_lock(&moxa_openlock); |
1354 | ch = tty->driver_data; | |
1355 | if (!ch) { | |
1356 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1357 | return -EINVAL; |
a8f5cda0 | 1358 | } |
1da177e4 | 1359 | |
b4173f45 | 1360 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1361 | if (set & TIOCM_RTS) |
1362 | rts = 1; | |
1363 | if (set & TIOCM_DTR) | |
1364 | dtr = 1; | |
1365 | if (clear & TIOCM_RTS) | |
1366 | rts = 0; | |
1367 | if (clear & TIOCM_DTR) | |
1368 | dtr = 0; | |
b4173f45 | 1369 | MoxaPortLineCtrl(ch, dtr, rts); |
a8f5cda0 | 1370 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1371 | return 0; |
1372 | } | |
1373 | ||
1da177e4 LT |
1374 | static void moxa_throttle(struct tty_struct *tty) |
1375 | { | |
8f8ecbad | 1376 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
1377 | |
1378 | ch->statusflags |= THROTTLE; | |
1379 | } | |
1380 | ||
1381 | static void moxa_unthrottle(struct tty_struct *tty) | |
1382 | { | |
8f8ecbad | 1383 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
1384 | |
1385 | ch->statusflags &= ~THROTTLE; | |
1386 | } | |
1387 | ||
1388 | static void moxa_set_termios(struct tty_struct *tty, | |
606d099c | 1389 | struct ktermios *old_termios) |
1da177e4 | 1390 | { |
8f8ecbad | 1391 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
1392 | |
1393 | if (ch == NULL) | |
1394 | return; | |
db1acaa6 | 1395 | moxa_set_tty_param(tty, old_termios); |
1da177e4 LT |
1396 | if (!(old_termios->c_cflag & CLOCAL) && |
1397 | (tty->termios->c_cflag & CLOCAL)) | |
1398 | wake_up_interruptible(&ch->open_wait); | |
1399 | } | |
1400 | ||
1401 | static void moxa_stop(struct tty_struct *tty) | |
1402 | { | |
8f8ecbad | 1403 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
1404 | |
1405 | if (ch == NULL) | |
1406 | return; | |
b4173f45 | 1407 | MoxaPortTxDisable(ch); |
1da177e4 LT |
1408 | ch->statusflags |= TXSTOPPED; |
1409 | } | |
1410 | ||
1411 | ||
1412 | static void moxa_start(struct tty_struct *tty) | |
1413 | { | |
8f8ecbad | 1414 | struct moxa_port *ch = (struct moxa_port *) tty->driver_data; |
1da177e4 LT |
1415 | |
1416 | if (ch == NULL) | |
1417 | return; | |
1418 | ||
1419 | if (!(ch->statusflags & TXSTOPPED)) | |
1420 | return; | |
1421 | ||
b4173f45 | 1422 | MoxaPortTxEnable(ch); |
1da177e4 LT |
1423 | ch->statusflags &= ~TXSTOPPED; |
1424 | } | |
1425 | ||
1426 | static void moxa_hangup(struct tty_struct *tty) | |
1427 | { | |
a8f5cda0 | 1428 | struct moxa_port *ch; |
1da177e4 | 1429 | |
a8f5cda0 JS |
1430 | mutex_lock(&moxa_openlock); |
1431 | ch = tty->driver_data; | |
1432 | if (ch == NULL) { | |
1433 | mutex_unlock(&moxa_openlock); | |
1434 | return; | |
1435 | } | |
1da177e4 | 1436 | ch->count = 0; |
a8f5cda0 JS |
1437 | moxa_close_port(ch); |
1438 | mutex_unlock(&moxa_openlock); | |
1439 | ||
1da177e4 LT |
1440 | wake_up_interruptible(&ch->open_wait); |
1441 | } | |
1442 | ||
7bcf97d1 | 1443 | static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) |
1da177e4 | 1444 | { |
7bcf97d1 | 1445 | dcd = !!dcd; |
1da177e4 | 1446 | |
7bcf97d1 | 1447 | if ((dcd != p->DCDState) && p->tty && C_CLOCAL(p->tty)) { |
a8f5cda0 | 1448 | if (!dcd) |
7bcf97d1 | 1449 | tty_hangup(p->tty); |
7bcf97d1 JS |
1450 | } |
1451 | p->DCDState = dcd; | |
1452 | } | |
1da177e4 | 1453 | |
7bcf97d1 JS |
1454 | static int moxa_poll_port(struct moxa_port *p, unsigned int handle, |
1455 | u16 __iomem *ip) | |
1456 | { | |
1457 | struct tty_struct *tty = p->tty; | |
1458 | void __iomem *ofsAddr; | |
1459 | unsigned int inited = p->asyncflags & ASYNC_INITIALIZED; | |
1460 | u16 intr; | |
1461 | ||
1462 | if (tty) { | |
1463 | if ((p->statusflags & EMPTYWAIT) && | |
1464 | MoxaPortTxQueue(p) == 0) { | |
1465 | p->statusflags &= ~EMPTYWAIT; | |
1466 | tty_wakeup(tty); | |
1467 | } | |
1468 | if ((p->statusflags & LOWWAIT) && !tty->stopped && | |
1469 | MoxaPortTxQueue(p) <= WAKEUP_CHARS) { | |
1470 | p->statusflags &= ~LOWWAIT; | |
1471 | tty_wakeup(tty); | |
1472 | } | |
1473 | ||
1474 | if (inited && !(p->statusflags & THROTTLE) && | |
1475 | MoxaPortRxQueue(p) > 0) { /* RX */ | |
1476 | MoxaPortReadData(p); | |
1477 | tty_schedule_flip(tty); | |
1478 | } | |
1479 | } else { | |
1480 | p->statusflags &= ~EMPTYWAIT; | |
1481 | MoxaPortFlushData(p, 0); /* flush RX */ | |
1da177e4 | 1482 | } |
0bcc4caa | 1483 | |
7bcf97d1 JS |
1484 | if (!handle) /* nothing else to do */ |
1485 | return 0; | |
1486 | ||
1487 | intr = readw(ip); /* port irq status */ | |
1488 | if (intr == 0) | |
1489 | return 0; | |
1490 | ||
1491 | writew(0, ip); /* ACK port */ | |
1492 | ofsAddr = p->tableAddr; | |
1493 | if (intr & IntrTx) /* disable tx intr */ | |
1494 | writew(readw(ofsAddr + HostStat) & ~WakeupTx, | |
1495 | ofsAddr + HostStat); | |
1496 | ||
1497 | if (!inited) | |
1498 | return 0; | |
1499 | ||
1500 | if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ | |
1501 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1502 | tty_schedule_flip(tty); | |
1503 | } | |
1504 | ||
1505 | if (intr & IntrLine) | |
1506 | moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); | |
1507 | ||
1508 | return 0; | |
1509 | } | |
1510 | ||
1511 | static void moxa_poll(unsigned long ignored) | |
1512 | { | |
1513 | struct moxa_board_conf *brd; | |
1514 | u16 __iomem *ip; | |
2a541341 | 1515 | unsigned int card, port, served = 0; |
7bcf97d1 JS |
1516 | |
1517 | spin_lock(&moxa_lock); | |
1da177e4 | 1518 | for (card = 0; card < MAX_BOARDS; card++) { |
7bcf97d1 JS |
1519 | brd = &moxa_boards[card]; |
1520 | if (!brd->ready) | |
1da177e4 | 1521 | continue; |
7bcf97d1 | 1522 | |
2a541341 JS |
1523 | served++; |
1524 | ||
7bcf97d1 JS |
1525 | ip = NULL; |
1526 | if (readb(brd->intPend) == 0xff) | |
1527 | ip = brd->intTable + readb(brd->intNdx); | |
1528 | ||
1529 | for (port = 0; port < brd->numPorts; port++) | |
1530 | moxa_poll_port(&brd->ports[port], !!ip, ip + port); | |
1531 | ||
1532 | if (ip) | |
1533 | writeb(0, brd->intPend); /* ACK */ | |
1534 | ||
1535 | if (moxaLowWaterChk) { | |
1536 | struct moxa_port *p = brd->ports; | |
1537 | for (port = 0; port < brd->numPorts; port++, p++) | |
1538 | if (p->lowChkFlag) { | |
1539 | p->lowChkFlag = 0; | |
1540 | moxa_low_water_check(p->tableAddr); | |
1da177e4 | 1541 | } |
1da177e4 LT |
1542 | } |
1543 | } | |
7bcf97d1 | 1544 | moxaLowWaterChk = 0; |
1da177e4 | 1545 | |
2a541341 JS |
1546 | if (served) |
1547 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
1548 | spin_unlock(&moxa_lock); | |
1da177e4 LT |
1549 | } |
1550 | ||
1551 | /******************************************************************************/ | |
1552 | ||
db1acaa6 | 1553 | static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 1554 | { |
606d099c | 1555 | register struct ktermios *ts; |
8f8ecbad | 1556 | struct moxa_port *ch; |
db1acaa6 | 1557 | int rts, cts, txflow, rxflow, xany, baud; |
1da177e4 | 1558 | |
8f8ecbad | 1559 | ch = (struct moxa_port *) tty->driver_data; |
1da177e4 | 1560 | ts = tty->termios; |
1da177e4 LT |
1561 | rts = cts = txflow = rxflow = xany = 0; |
1562 | if (ts->c_cflag & CRTSCTS) | |
1563 | rts = cts = 1; | |
1564 | if (ts->c_iflag & IXON) | |
1565 | txflow = 1; | |
1566 | if (ts->c_iflag & IXOFF) | |
1567 | rxflow = 1; | |
1568 | if (ts->c_iflag & IXANY) | |
1569 | xany = 1; | |
db1acaa6 AC |
1570 | |
1571 | /* Clear the features we don't support */ | |
1572 | ts->c_cflag &= ~CMSPAR; | |
b4173f45 JS |
1573 | MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); |
1574 | baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); | |
db1acaa6 AC |
1575 | if (baud == -1) |
1576 | baud = tty_termios_baud_rate(old_termios); | |
1577 | /* Not put the baud rate into the termios data */ | |
1578 | tty_encode_baud_rate(tty, baud, baud); | |
1da177e4 LT |
1579 | } |
1580 | ||
6f56b658 | 1581 | static void moxa_setup_empty_event(struct tty_struct *tty) |
1da177e4 | 1582 | { |
8f8ecbad | 1583 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1584 | |
7bcf97d1 | 1585 | spin_lock_bh(&moxa_lock); |
1da177e4 | 1586 | ch->statusflags |= EMPTYWAIT; |
7bcf97d1 | 1587 | spin_unlock_bh(&moxa_lock); |
1da177e4 LT |
1588 | } |
1589 | ||
6f56b658 | 1590 | static void moxa_shut_down(struct moxa_port *ch) |
1da177e4 | 1591 | { |
a8f5cda0 | 1592 | struct tty_struct *tp = ch->tty; |
1da177e4 LT |
1593 | |
1594 | if (!(ch->asyncflags & ASYNC_INITIALIZED)) | |
1595 | return; | |
1596 | ||
b4173f45 | 1597 | MoxaPortDisable(ch); |
1da177e4 LT |
1598 | |
1599 | /* | |
1600 | * If we're a modem control device and HUPCL is on, drop RTS & DTR. | |
1601 | */ | |
a8f5cda0 | 1602 | if (C_HUPCL(tp)) |
b4173f45 | 1603 | MoxaPortLineCtrl(ch, 0, 0); |
1da177e4 | 1604 | |
a8f5cda0 | 1605 | spin_lock_bh(&moxa_lock); |
1da177e4 | 1606 | ch->asyncflags &= ~ASYNC_INITIALIZED; |
a8f5cda0 | 1607 | spin_unlock_bh(&moxa_lock); |
1da177e4 LT |
1608 | } |
1609 | ||
1da177e4 LT |
1610 | /***************************************************************************** |
1611 | * Driver level functions: * | |
1da177e4 | 1612 | *****************************************************************************/ |
1da177e4 | 1613 | |
b4173f45 | 1614 | static void MoxaPortFlushData(struct moxa_port *port, int mode) |
1da177e4 LT |
1615 | { |
1616 | void __iomem *ofsAddr; | |
1617 | if ((mode < 0) || (mode > 2)) | |
1618 | return; | |
b4173f45 | 1619 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1620 | moxafunc(ofsAddr, FC_FlushQueue, mode); |
1621 | if (mode != 1) { | |
b4173f45 | 1622 | port->lowChkFlag = 0; |
6f56b658 | 1623 | moxa_low_water_check(ofsAddr); |
1da177e4 LT |
1624 | } |
1625 | } | |
1626 | ||
1da177e4 LT |
1627 | /***************************************************************************** |
1628 | * Port level functions: * | |
1da177e4 LT |
1629 | * 2. MoxaPortEnable(int port); * |
1630 | * 3. MoxaPortDisable(int port); * | |
1631 | * 4. MoxaPortGetMaxBaud(int port); * | |
1da177e4 | 1632 | * 6. MoxaPortSetBaud(int port, long baud); * |
1da177e4 LT |
1633 | * 8. MoxaPortSetTermio(int port, unsigned char *termio); * |
1634 | * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); * | |
1635 | * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); * | |
1636 | * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); * | |
1637 | * 12. MoxaPortLineStatus(int port); * | |
1da177e4 LT |
1638 | * 15. MoxaPortFlushData(int port, int mode); * |
1639 | * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); * | |
33f0f88f | 1640 | * 17. MoxaPortReadData(int port, struct tty_struct *tty); * |
1da177e4 LT |
1641 | * 20. MoxaPortTxQueue(int port); * |
1642 | * 21. MoxaPortTxFree(int port); * | |
1643 | * 22. MoxaPortRxQueue(int port); * | |
1da177e4 LT |
1644 | * 24. MoxaPortTxDisable(int port); * |
1645 | * 25. MoxaPortTxEnable(int port); * | |
1da177e4 | 1646 | * 27. MoxaPortResetBrkCnt(int port); * |
1da177e4 LT |
1647 | *****************************************************************************/ |
1648 | /* | |
1649 | * Moxa Port Number Description: | |
1650 | * | |
1651 | * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, | |
1652 | * the port number using in MOXA driver functions will be 0 to 31 for | |
1653 | * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 | |
1654 | * to 127 for fourth. For example, if you setup three MOXA boards, | |
1655 | * first board is C218, second board is C320-16 and third board is | |
1656 | * C320-32. The port number of first board (C218 - 8 ports) is from | |
1657 | * 0 to 7. The port number of second board (C320 - 16 ports) is form | |
1658 | * 32 to 47. The port number of third board (C320 - 32 ports) is from | |
1659 | * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to | |
1660 | * 127 will be invalid. | |
1661 | * | |
1662 | * | |
1663 | * Moxa Functions Description: | |
1664 | * | |
1665 | * Function 1: Driver initialization routine, this routine must be | |
1666 | * called when initialized driver. | |
1667 | * Syntax: | |
1668 | * void MoxaDriverInit(); | |
1669 | * | |
1670 | * | |
1671 | * Function 2: Moxa driver private IOCTL command processing. | |
1672 | * Syntax: | |
1673 | * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); | |
1674 | * | |
1675 | * unsigned int cmd : IOCTL command | |
1676 | * unsigned long arg : IOCTL argument | |
1677 | * int port : port number (0 - 127) | |
1678 | * | |
1679 | * return: 0 (OK) | |
1680 | * -EINVAL | |
1681 | * -ENOIOCTLCMD | |
1682 | * | |
1683 | * | |
1da177e4 LT |
1684 | * Function 6: Enable this port to start Tx/Rx data. |
1685 | * Syntax: | |
1686 | * void MoxaPortEnable(int port); | |
1687 | * int port : port number (0 - 127) | |
1688 | * | |
1689 | * | |
1690 | * Function 7: Disable this port | |
1691 | * Syntax: | |
1692 | * void MoxaPortDisable(int port); | |
1693 | * int port : port number (0 - 127) | |
1694 | * | |
1695 | * | |
1696 | * Function 8: Get the maximun available baud rate of this port. | |
1697 | * Syntax: | |
1698 | * long MoxaPortGetMaxBaud(int port); | |
1699 | * int port : port number (0 - 127) | |
1700 | * | |
1701 | * return: 0 : this port is invalid | |
1702 | * 38400/57600/115200 bps | |
1703 | * | |
1704 | * | |
1da177e4 LT |
1705 | * Function 10: Setting baud rate of this port. |
1706 | * Syntax: | |
1707 | * long MoxaPortSetBaud(int port, long baud); | |
1708 | * int port : port number (0 - 127) | |
1709 | * long baud : baud rate (50 - 115200) | |
1710 | * | |
1711 | * return: 0 : this port is invalid or baud < 50 | |
1712 | * 50 - 115200 : the real baud rate set to the port, if | |
1713 | * the argument baud is large than maximun | |
1714 | * available baud rate, the real setting | |
1715 | * baud rate will be the maximun baud rate. | |
1716 | * | |
1717 | * | |
1da177e4 LT |
1718 | * Function 12: Configure the port. |
1719 | * Syntax: | |
606d099c | 1720 | * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); |
1da177e4 | 1721 | * int port : port number (0 - 127) |
606d099c | 1722 | * struct ktermios * termio : termio structure pointer |
c7bce309 | 1723 | * speed_t baud : baud rate |
1da177e4 LT |
1724 | * |
1725 | * return: -1 : this port is invalid or termio == NULL | |
1726 | * 0 : setting O.K. | |
1727 | * | |
1728 | * | |
1729 | * Function 13: Get the DTR/RTS state of this port. | |
1730 | * Syntax: | |
1731 | * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); | |
1732 | * int port : port number (0 - 127) | |
1733 | * int * dtrState : pointer to INT to receive the current DTR | |
1734 | * state. (if NULL, this function will not | |
1735 | * write to this address) | |
1736 | * int * rtsState : pointer to INT to receive the current RTS | |
1737 | * state. (if NULL, this function will not | |
1738 | * write to this address) | |
1739 | * | |
1740 | * return: -1 : this port is invalid | |
1741 | * 0 : O.K. | |
1742 | * | |
1743 | * | |
1744 | * Function 14: Setting the DTR/RTS output state of this port. | |
1745 | * Syntax: | |
1746 | * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); | |
1747 | * int port : port number (0 - 127) | |
1748 | * int dtrState : DTR output state (0: off, 1: on) | |
1749 | * int rtsState : RTS output state (0: off, 1: on) | |
1750 | * | |
1751 | * | |
1752 | * Function 15: Setting the flow control of this port. | |
1753 | * Syntax: | |
1754 | * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, | |
1755 | * int txFlow,int xany); | |
1756 | * int port : port number (0 - 127) | |
1757 | * int rtsFlow : H/W RTS flow control (0: no, 1: yes) | |
1758 | * int ctsFlow : H/W CTS flow control (0: no, 1: yes) | |
1759 | * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) | |
1760 | * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) | |
1761 | * int xany : S/W XANY flow control (0: no, 1: yes) | |
1762 | * | |
1763 | * | |
1764 | * Function 16: Get ths line status of this port | |
1765 | * Syntax: | |
1766 | * int MoxaPortLineStatus(int port); | |
1767 | * int port : port number (0 - 127) | |
1768 | * | |
1769 | * return: Bit 0 - CTS state (0: off, 1: on) | |
1770 | * Bit 1 - DSR state (0: off, 1: on) | |
1771 | * Bit 2 - DCD state (0: off, 1: on) | |
1772 | * | |
1773 | * | |
1da177e4 LT |
1774 | * Function 19: Flush the Rx/Tx buffer data of this port. |
1775 | * Syntax: | |
1776 | * void MoxaPortFlushData(int port, int mode); | |
1777 | * int port : port number (0 - 127) | |
1778 | * int mode | |
1779 | * 0 : flush the Rx buffer | |
1780 | * 1 : flush the Tx buffer | |
1781 | * 2 : flush the Rx and Tx buffer | |
1782 | * | |
1783 | * | |
1784 | * Function 20: Write data. | |
1785 | * Syntax: | |
1786 | * int MoxaPortWriteData(int port, unsigned char * buffer, int length); | |
1787 | * int port : port number (0 - 127) | |
1788 | * unsigned char * buffer : pointer to write data buffer. | |
1789 | * int length : write data length | |
1790 | * | |
1791 | * return: 0 - length : real write data length | |
1792 | * | |
1793 | * | |
1794 | * Function 21: Read data. | |
1795 | * Syntax: | |
33f0f88f | 1796 | * int MoxaPortReadData(int port, struct tty_struct *tty); |
1da177e4 | 1797 | * int port : port number (0 - 127) |
33f0f88f | 1798 | * struct tty_struct *tty : tty for data |
1da177e4 LT |
1799 | * |
1800 | * return: 0 - length : real read data length | |
1801 | * | |
1802 | * | |
1da177e4 LT |
1803 | * Function 24: Get the Tx buffer current queued data bytes |
1804 | * Syntax: | |
1805 | * int MoxaPortTxQueue(int port); | |
1806 | * int port : port number (0 - 127) | |
1807 | * | |
1808 | * return: .. : Tx buffer current queued data bytes | |
1809 | * | |
1810 | * | |
1811 | * Function 25: Get the Tx buffer current free space | |
1812 | * Syntax: | |
1813 | * int MoxaPortTxFree(int port); | |
1814 | * int port : port number (0 - 127) | |
1815 | * | |
1816 | * return: .. : Tx buffer current free space | |
1817 | * | |
1818 | * | |
1819 | * Function 26: Get the Rx buffer current queued data bytes | |
1820 | * Syntax: | |
1821 | * int MoxaPortRxQueue(int port); | |
1822 | * int port : port number (0 - 127) | |
1823 | * | |
1824 | * return: .. : Rx buffer current queued data bytes | |
1825 | * | |
1826 | * | |
1da177e4 LT |
1827 | * Function 28: Disable port data transmission. |
1828 | * Syntax: | |
1829 | * void MoxaPortTxDisable(int port); | |
1830 | * int port : port number (0 - 127) | |
1831 | * | |
1832 | * | |
1833 | * Function 29: Enable port data transmission. | |
1834 | * Syntax: | |
1835 | * void MoxaPortTxEnable(int port); | |
1836 | * int port : port number (0 - 127) | |
1837 | * | |
1838 | * | |
1da177e4 LT |
1839 | * Function 31: Get the received BREAK signal count and reset it. |
1840 | * Syntax: | |
1841 | * int MoxaPortResetBrkCnt(int port); | |
1842 | * int port : port number (0 - 127) | |
1843 | * | |
1844 | * return: 0 - .. : BREAK signal count | |
1845 | * | |
1846 | * | |
1da177e4 | 1847 | */ |
1da177e4 | 1848 | |
b4173f45 | 1849 | static void MoxaPortEnable(struct moxa_port *port) |
1da177e4 LT |
1850 | { |
1851 | void __iomem *ofsAddr; | |
1da177e4 LT |
1852 | short lowwater = 512; |
1853 | ||
b4173f45 | 1854 | ofsAddr = port->tableAddr; |
1da177e4 | 1855 | writew(lowwater, ofsAddr + Low_water); |
b4173f45 JS |
1856 | if (port->board->boardType == MOXA_BOARD_C320_ISA || |
1857 | port->board->boardType == MOXA_BOARD_C320_PCI) { | |
1da177e4 LT |
1858 | moxafunc(ofsAddr, FC_SetBreakIrq, 0); |
1859 | } else { | |
1860 | writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat); | |
1861 | } | |
1862 | ||
1863 | moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); | |
1864 | moxafunc(ofsAddr, FC_FlushQueue, 2); | |
1865 | ||
1866 | moxafunc(ofsAddr, FC_EnableCH, Magic_code); | |
1867 | MoxaPortLineStatus(port); | |
1868 | } | |
1869 | ||
b4173f45 | 1870 | static void MoxaPortDisable(struct moxa_port *port) |
1da177e4 | 1871 | { |
b4173f45 | 1872 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
1873 | |
1874 | moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ | |
1875 | moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); | |
1876 | writew(0, ofsAddr + HostStat); | |
1877 | moxafunc(ofsAddr, FC_DisableCH, Magic_code); | |
1878 | } | |
1879 | ||
b4173f45 | 1880 | static long MoxaPortGetMaxBaud(struct moxa_port *port) |
1da177e4 | 1881 | { |
b4173f45 JS |
1882 | if (port->board->boardType == MOXA_BOARD_C320_ISA || |
1883 | port->board->boardType == MOXA_BOARD_C320_PCI) | |
1da177e4 LT |
1884 | return (460800L); |
1885 | else | |
1886 | return (921600L); | |
1887 | } | |
1888 | ||
1889 | ||
b4173f45 | 1890 | static long MoxaPortSetBaud(struct moxa_port *port, long baud) |
1da177e4 LT |
1891 | { |
1892 | void __iomem *ofsAddr; | |
1893 | long max, clock; | |
1894 | unsigned int val; | |
1895 | ||
1896 | if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0)) | |
1897 | return (0); | |
b4173f45 | 1898 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1899 | if (baud > max) |
1900 | baud = max; | |
1901 | if (max == 38400L) | |
1902 | clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */ | |
1903 | else if (max == 57600L) | |
1904 | clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */ | |
1905 | else | |
1906 | clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */ | |
1907 | val = clock / baud; | |
1908 | moxafunc(ofsAddr, FC_SetBaud, val); | |
1909 | baud = clock / val; | |
1da177e4 LT |
1910 | return (baud); |
1911 | } | |
1912 | ||
b4173f45 JS |
1913 | static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, |
1914 | speed_t baud) | |
1da177e4 LT |
1915 | { |
1916 | void __iomem *ofsAddr; | |
1917 | tcflag_t cflag; | |
1da177e4 LT |
1918 | tcflag_t mode = 0; |
1919 | ||
b4173f45 | 1920 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1921 | cflag = termio->c_cflag; /* termio->c_cflag */ |
1922 | ||
1923 | mode = termio->c_cflag & CSIZE; | |
1924 | if (mode == CS5) | |
1925 | mode = MX_CS5; | |
1926 | else if (mode == CS6) | |
1927 | mode = MX_CS6; | |
1928 | else if (mode == CS7) | |
1929 | mode = MX_CS7; | |
1930 | else if (mode == CS8) | |
1931 | mode = MX_CS8; | |
1932 | ||
1933 | if (termio->c_cflag & CSTOPB) { | |
1934 | if (mode == MX_CS5) | |
1935 | mode |= MX_STOP15; | |
1936 | else | |
1937 | mode |= MX_STOP2; | |
1938 | } else | |
1939 | mode |= MX_STOP1; | |
1940 | ||
1941 | if (termio->c_cflag & PARENB) { | |
1942 | if (termio->c_cflag & PARODD) | |
1943 | mode |= MX_PARODD; | |
1944 | else | |
1945 | mode |= MX_PAREVEN; | |
1946 | } else | |
1947 | mode |= MX_PARNONE; | |
1948 | ||
1949 | moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode); | |
1950 | ||
b4173f45 JS |
1951 | if (port->board->boardType == MOXA_BOARD_C320_ISA || |
1952 | port->board->boardType == MOXA_BOARD_C320_PCI) { | |
c7bce309 | 1953 | if (baud >= 921600L) |
1da177e4 LT |
1954 | return (-1); |
1955 | } | |
db1acaa6 | 1956 | baud = MoxaPortSetBaud(port, baud); |
1da177e4 LT |
1957 | |
1958 | if (termio->c_iflag & (IXON | IXOFF | IXANY)) { | |
1959 | writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); | |
1960 | writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); | |
1961 | writeb(FC_SetXonXoff, ofsAddr + FuncCode); | |
6f56b658 | 1962 | moxa_wait_finish(ofsAddr); |
1da177e4 LT |
1963 | |
1964 | } | |
db1acaa6 | 1965 | return (baud); |
1da177e4 LT |
1966 | } |
1967 | ||
b4173f45 JS |
1968 | static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, |
1969 | int *rtsState) | |
1da177e4 LT |
1970 | { |
1971 | ||
b4173f45 JS |
1972 | if (dtrState) |
1973 | *dtrState = !!(port->lineCtrl & DTR_ON); | |
1974 | if (rtsState) | |
1975 | *rtsState = !!(port->lineCtrl & RTS_ON); | |
1976 | ||
1da177e4 LT |
1977 | return (0); |
1978 | } | |
1979 | ||
b4173f45 | 1980 | static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) |
1da177e4 | 1981 | { |
b4173f45 | 1982 | int mode = 0; |
1da177e4 | 1983 | |
1da177e4 LT |
1984 | if (dtr) |
1985 | mode |= DTR_ON; | |
1986 | if (rts) | |
1987 | mode |= RTS_ON; | |
b4173f45 JS |
1988 | port->lineCtrl = mode; |
1989 | moxafunc(port->tableAddr, FC_LineControl, mode); | |
1da177e4 LT |
1990 | } |
1991 | ||
b4173f45 JS |
1992 | static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, |
1993 | int txflow, int rxflow, int txany) | |
1da177e4 | 1994 | { |
b4173f45 | 1995 | int mode = 0; |
1da177e4 | 1996 | |
1da177e4 LT |
1997 | if (rts) |
1998 | mode |= RTS_FlowCtl; | |
1999 | if (cts) | |
2000 | mode |= CTS_FlowCtl; | |
2001 | if (txflow) | |
2002 | mode |= Tx_FlowCtl; | |
2003 | if (rxflow) | |
2004 | mode |= Rx_FlowCtl; | |
2005 | if (txany) | |
2006 | mode |= IXM_IXANY; | |
b4173f45 | 2007 | moxafunc(port->tableAddr, FC_SetFlowCtl, mode); |
1da177e4 LT |
2008 | } |
2009 | ||
b4173f45 | 2010 | static int MoxaPortLineStatus(struct moxa_port *port) |
1da177e4 LT |
2011 | { |
2012 | void __iomem *ofsAddr; | |
2013 | int val; | |
2014 | ||
b4173f45 JS |
2015 | ofsAddr = port->tableAddr; |
2016 | if (port->board->boardType == MOXA_BOARD_C320_ISA || | |
2017 | port->board->boardType == MOXA_BOARD_C320_PCI) { | |
1da177e4 LT |
2018 | moxafunc(ofsAddr, FC_LineStatus, 0); |
2019 | val = readw(ofsAddr + FuncArg); | |
2020 | } else { | |
2021 | val = readw(ofsAddr + FlagStat) >> 4; | |
2022 | } | |
2023 | val &= 0x0B; | |
7bcf97d1 | 2024 | if (val & 8) |
1da177e4 | 2025 | val |= 4; |
a8f5cda0 | 2026 | spin_lock_bh(&moxa_lock); |
7bcf97d1 | 2027 | moxa_new_dcdstate(port, val & 8); |
a8f5cda0 | 2028 | spin_unlock_bh(&moxa_lock); |
1da177e4 | 2029 | val &= 7; |
7bcf97d1 | 2030 | return val; |
1da177e4 LT |
2031 | } |
2032 | ||
2108eba5 JS |
2033 | static int MoxaPortWriteData(struct moxa_port *port, |
2034 | const unsigned char *buffer, int len) | |
1da177e4 | 2035 | { |
1da177e4 | 2036 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
2037 | unsigned int c, total; |
2038 | u16 head, tail, tx_mask, spage, epage; | |
2039 | u16 pageno, pageofs, bufhead; | |
1da177e4 | 2040 | |
b4173f45 JS |
2041 | ofsAddr = port->tableAddr; |
2042 | baseAddr = port->board->basemem; | |
1da177e4 LT |
2043 | tx_mask = readw(ofsAddr + TX_mask); |
2044 | spage = readw(ofsAddr + Page_txb); | |
2045 | epage = readw(ofsAddr + EndPage_txb); | |
2046 | tail = readw(ofsAddr + TXwptr); | |
2047 | head = readw(ofsAddr + TXrptr); | |
2108eba5 | 2048 | c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); |
1da177e4 LT |
2049 | if (c > len) |
2050 | c = len; | |
b4173f45 | 2051 | moxaLog.txcnt[port->tty->index] += c; |
1da177e4 LT |
2052 | total = c; |
2053 | if (spage == epage) { | |
2054 | bufhead = readw(ofsAddr + Ofs_txb); | |
2055 | writew(spage, baseAddr + Control_reg); | |
2056 | while (c > 0) { | |
2057 | if (head > tail) | |
2058 | len = head - tail - 1; | |
2059 | else | |
2060 | len = tx_mask + 1 - tail; | |
2061 | len = (c > len) ? len : c; | |
2062 | ofs = baseAddr + DynPage_addr + bufhead + tail; | |
2108eba5 JS |
2063 | memcpy_toio(ofs, buffer, len); |
2064 | buffer += len; | |
1da177e4 LT |
2065 | tail = (tail + len) & tx_mask; |
2066 | c -= len; | |
2067 | } | |
1da177e4 | 2068 | } else { |
1da177e4 LT |
2069 | pageno = spage + (tail >> 13); |
2070 | pageofs = tail & Page_mask; | |
2108eba5 JS |
2071 | while (c > 0) { |
2072 | len = Page_size - pageofs; | |
2073 | if (len > c) | |
2074 | len = c; | |
1da177e4 LT |
2075 | writeb(pageno, baseAddr + Control_reg); |
2076 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
2077 | memcpy_toio(ofs, buffer, len); |
2078 | buffer += len; | |
1da177e4 LT |
2079 | if (++pageno == epage) |
2080 | pageno = spage; | |
2081 | pageofs = 0; | |
2108eba5 JS |
2082 | c -= len; |
2083 | } | |
2084 | tail = (tail + total) & tx_mask; | |
1da177e4 | 2085 | } |
2108eba5 | 2086 | writew(tail, ofsAddr + TXwptr); |
1da177e4 | 2087 | writeb(1, ofsAddr + CD180TXirq); /* start to send */ |
2108eba5 | 2088 | return total; |
1da177e4 LT |
2089 | } |
2090 | ||
7bcf97d1 | 2091 | static int MoxaPortReadData(struct moxa_port *port) |
1da177e4 | 2092 | { |
7bcf97d1 | 2093 | struct tty_struct *tty = port->tty; |
2108eba5 | 2094 | unsigned char *dst; |
1da177e4 | 2095 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
2096 | unsigned int count, len, total; |
2097 | u16 tail, rx_mask, spage, epage; | |
2098 | u16 pageno, pageofs, bufhead, head; | |
1da177e4 | 2099 | |
b4173f45 JS |
2100 | ofsAddr = port->tableAddr; |
2101 | baseAddr = port->board->basemem; | |
1da177e4 LT |
2102 | head = readw(ofsAddr + RXrptr); |
2103 | tail = readw(ofsAddr + RXwptr); | |
2104 | rx_mask = readw(ofsAddr + RX_mask); | |
2105 | spage = readw(ofsAddr + Page_rxb); | |
2106 | epage = readw(ofsAddr + EndPage_rxb); | |
2108eba5 | 2107 | count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); |
1da177e4 | 2108 | if (count == 0) |
33f0f88f | 2109 | return 0; |
1da177e4 | 2110 | |
33f0f88f | 2111 | total = count; |
7bcf97d1 | 2112 | moxaLog.rxcnt[tty->index] += total; |
1da177e4 LT |
2113 | if (spage == epage) { |
2114 | bufhead = readw(ofsAddr + Ofs_rxb); | |
2115 | writew(spage, baseAddr + Control_reg); | |
2116 | while (count > 0) { | |
1da177e4 | 2117 | ofs = baseAddr + DynPage_addr + bufhead + head; |
2108eba5 JS |
2118 | len = (tail >= head) ? (tail - head) : |
2119 | (rx_mask + 1 - head); | |
2120 | len = tty_prepare_flip_string(tty, &dst, | |
2121 | min(len, count)); | |
2122 | memcpy_fromio(dst, ofs, len); | |
1da177e4 LT |
2123 | head = (head + len) & rx_mask; |
2124 | count -= len; | |
2125 | } | |
1da177e4 | 2126 | } else { |
1da177e4 LT |
2127 | pageno = spage + (head >> 13); |
2128 | pageofs = head & Page_mask; | |
2108eba5 | 2129 | while (count > 0) { |
1da177e4 LT |
2130 | writew(pageno, baseAddr + Control_reg); |
2131 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
2132 | len = tty_prepare_flip_string(tty, &dst, |
2133 | min(Page_size - pageofs, count)); | |
2134 | memcpy_fromio(dst, ofs, len); | |
2135 | ||
2136 | count -= len; | |
2137 | pageofs = (pageofs + len) & Page_mask; | |
2138 | if (pageofs == 0 && ++pageno == epage) | |
1da177e4 | 2139 | pageno = spage; |
2108eba5 JS |
2140 | } |
2141 | head = (head + total) & rx_mask; | |
1da177e4 | 2142 | } |
2108eba5 JS |
2143 | writew(head, ofsAddr + RXrptr); |
2144 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
1da177e4 | 2145 | moxaLowWaterChk = 1; |
b4173f45 | 2146 | port->lowChkFlag = 1; |
1da177e4 | 2147 | } |
2108eba5 | 2148 | return total; |
1da177e4 LT |
2149 | } |
2150 | ||
2151 | ||
b4173f45 | 2152 | static int MoxaPortTxQueue(struct moxa_port *port) |
1da177e4 | 2153 | { |
b4173f45 | 2154 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2155 | u16 rptr, wptr, mask; |
1da177e4 | 2156 | |
1da177e4 LT |
2157 | rptr = readw(ofsAddr + TXrptr); |
2158 | wptr = readw(ofsAddr + TXwptr); | |
2159 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2160 | return (wptr - rptr) & mask; |
1da177e4 LT |
2161 | } |
2162 | ||
b4173f45 | 2163 | static int MoxaPortTxFree(struct moxa_port *port) |
1da177e4 | 2164 | { |
b4173f45 | 2165 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2166 | u16 rptr, wptr, mask; |
1da177e4 | 2167 | |
1da177e4 LT |
2168 | rptr = readw(ofsAddr + TXrptr); |
2169 | wptr = readw(ofsAddr + TXwptr); | |
2170 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2171 | return mask - ((wptr - rptr) & mask); |
1da177e4 LT |
2172 | } |
2173 | ||
b4173f45 | 2174 | static int MoxaPortRxQueue(struct moxa_port *port) |
1da177e4 | 2175 | { |
b4173f45 | 2176 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2177 | u16 rptr, wptr, mask; |
1da177e4 | 2178 | |
1da177e4 LT |
2179 | rptr = readw(ofsAddr + RXrptr); |
2180 | wptr = readw(ofsAddr + RXwptr); | |
2181 | mask = readw(ofsAddr + RX_mask); | |
2108eba5 | 2182 | return (wptr - rptr) & mask; |
1da177e4 LT |
2183 | } |
2184 | ||
b4173f45 | 2185 | static void MoxaPortTxDisable(struct moxa_port *port) |
1da177e4 | 2186 | { |
b4173f45 | 2187 | moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); |
1da177e4 LT |
2188 | } |
2189 | ||
b4173f45 | 2190 | static void MoxaPortTxEnable(struct moxa_port *port) |
1da177e4 | 2191 | { |
b4173f45 | 2192 | moxafunc(port->tableAddr, FC_SetXonState, Magic_code); |
1da177e4 LT |
2193 | } |
2194 | ||
8f8ecbad | 2195 | static int moxa_get_serial_info(struct moxa_port *info, |
1da177e4 LT |
2196 | struct serial_struct __user *retinfo) |
2197 | { | |
2198 | struct serial_struct tmp; | |
2199 | ||
2200 | memset(&tmp, 0, sizeof(tmp)); | |
2201 | tmp.type = info->type; | |
b4173f45 | 2202 | tmp.line = info->tty->index; |
1da177e4 LT |
2203 | tmp.port = 0; |
2204 | tmp.irq = 0; | |
2205 | tmp.flags = info->asyncflags; | |
2206 | tmp.baud_base = 921600; | |
2207 | tmp.close_delay = info->close_delay; | |
1da177e4 LT |
2208 | tmp.custom_divisor = 0; |
2209 | tmp.hub6 = 0; | |
2210 | if(copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2211 | return -EFAULT; | |
2212 | return (0); | |
2213 | } | |
2214 | ||
2215 | ||
8f8ecbad | 2216 | static int moxa_set_serial_info(struct moxa_port *info, |
1da177e4 LT |
2217 | struct serial_struct __user *new_info) |
2218 | { | |
2219 | struct serial_struct new_serial; | |
2220 | ||
2221 | if(copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2222 | return -EFAULT; | |
2223 | ||
2224 | if ((new_serial.irq != 0) || | |
2225 | (new_serial.port != 0) || | |
2226 | // (new_serial.type != info->type) || | |
2227 | (new_serial.custom_divisor != 0) || | |
2228 | (new_serial.baud_base != 921600)) | |
2229 | return (-EPERM); | |
2230 | ||
2231 | if (!capable(CAP_SYS_ADMIN)) { | |
2232 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
2233 | (info->asyncflags & ~ASYNC_USR_MASK))) | |
2234 | return (-EPERM); | |
2235 | } else { | |
2236 | info->close_delay = new_serial.close_delay * HZ / 100; | |
1da177e4 LT |
2237 | } |
2238 | ||
2239 | new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); | |
2240 | new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); | |
2241 | ||
2242 | if (new_serial.type == PORT_16550A) { | |
b4173f45 | 2243 | MoxaSetFifo(info, 1); |
1da177e4 | 2244 | } else { |
b4173f45 | 2245 | MoxaSetFifo(info, 0); |
1da177e4 LT |
2246 | } |
2247 | ||
2248 | info->type = new_serial.type; | |
2249 | return (0); | |
2250 | } | |
2251 | ||
2252 | ||
2253 | ||
2254 | /***************************************************************************** | |
2255 | * Static local functions: * | |
2256 | *****************************************************************************/ | |
1da177e4 | 2257 | |
b4173f45 | 2258 | static void MoxaSetFifo(struct moxa_port *port, int enable) |
1da177e4 | 2259 | { |
b4173f45 | 2260 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
2261 | |
2262 | if (!enable) { | |
2263 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); | |
2264 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); | |
2265 | } else { | |
2266 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); | |
2267 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); | |
2268 | } | |
2269 | } |