Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /*****************************************************************************/ |
2 | /* | |
3 | * moxa.c -- MOXA Intellio family multiport serial driver. | |
4 | * | |
b9705b60 JS |
5 | * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com). |
6 | * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> | |
1da177e4 LT |
7 | * |
8 | * This code is loosely based on the Linux serial driver, written by | |
9 | * Linus Torvalds, Theodore T'so and others. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
1da177e4 LT |
15 | */ |
16 | ||
17 | /* | |
18 | * MOXA Intellio Series Driver | |
19 | * for : LINUX | |
20 | * date : 1999/1/7 | |
21 | * version : 5.1 | |
22 | */ | |
23 | ||
1da177e4 LT |
24 | #include <linux/module.h> |
25 | #include <linux/types.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/ioport.h> | |
28 | #include <linux/errno.h> | |
03718234 | 29 | #include <linux/firmware.h> |
1da177e4 LT |
30 | #include <linux/signal.h> |
31 | #include <linux/sched.h> | |
32 | #include <linux/timer.h> | |
33 | #include <linux/interrupt.h> | |
34 | #include <linux/tty.h> | |
35 | #include <linux/tty_flip.h> | |
36 | #include <linux/major.h> | |
405f5571 | 37 | #include <linux/smp_lock.h> |
1da177e4 LT |
38 | #include <linux/string.h> |
39 | #include <linux/fcntl.h> | |
40 | #include <linux/ptrace.h> | |
41 | #include <linux/serial.h> | |
42 | #include <linux/tty_driver.h> | |
43 | #include <linux/delay.h> | |
44 | #include <linux/pci.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/bitops.h> | |
47 | ||
48 | #include <asm/system.h> | |
49 | #include <asm/io.h> | |
50 | #include <asm/uaccess.h> | |
51 | ||
03718234 JS |
52 | #include "moxa.h" |
53 | ||
b9705b60 | 54 | #define MOXA_VERSION "6.0k" |
1da177e4 | 55 | |
03718234 JS |
56 | #define MOXA_FW_HDRLEN 32 |
57 | ||
11324edd | 58 | #define MOXAMAJOR 172 |
1da177e4 | 59 | |
11324edd | 60 | #define MAX_BOARDS 4 /* Don't change this value */ |
1da177e4 | 61 | #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ |
11324edd | 62 | #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) |
1da177e4 | 63 | |
08d01c79 JS |
64 | #define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ |
65 | (brd)->boardType == MOXA_BOARD_C320_PCI) | |
66 | ||
1da177e4 LT |
67 | /* |
68 | * Define the Moxa PCI vendor and device IDs. | |
69 | */ | |
11324edd JS |
70 | #define MOXA_BUS_TYPE_ISA 0 |
71 | #define MOXA_BUS_TYPE_PCI 1 | |
1da177e4 | 72 | |
1da177e4 LT |
73 | enum { |
74 | MOXA_BOARD_C218_PCI = 1, | |
75 | MOXA_BOARD_C218_ISA, | |
76 | MOXA_BOARD_C320_PCI, | |
77 | MOXA_BOARD_C320_ISA, | |
78 | MOXA_BOARD_CP204J, | |
79 | }; | |
80 | ||
81 | static char *moxa_brdname[] = | |
82 | { | |
83 | "C218 Turbo PCI series", | |
84 | "C218 Turbo ISA series", | |
85 | "C320 Turbo PCI series", | |
86 | "C320 Turbo ISA series", | |
87 | "CP-204J series", | |
88 | }; | |
89 | ||
90 | #ifdef CONFIG_PCI | |
91 | static struct pci_device_id moxa_pcibrds[] = { | |
5ebb4078 JS |
92 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), |
93 | .driver_data = MOXA_BOARD_C218_PCI }, | |
94 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), | |
95 | .driver_data = MOXA_BOARD_C320_PCI }, | |
96 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), | |
97 | .driver_data = MOXA_BOARD_CP204J }, | |
1da177e4 LT |
98 | { 0 } |
99 | }; | |
100 | MODULE_DEVICE_TABLE(pci, moxa_pcibrds); | |
101 | #endif /* CONFIG_PCI */ | |
102 | ||
03718234 JS |
103 | struct moxa_port; |
104 | ||
8f8ecbad | 105 | static struct moxa_board_conf { |
1da177e4 LT |
106 | int boardType; |
107 | int numPorts; | |
1da177e4 | 108 | int busType; |
8f8ecbad | 109 | |
810ab09b | 110 | unsigned int ready; |
8f8ecbad | 111 | |
03718234 JS |
112 | struct moxa_port *ports; |
113 | ||
8f8ecbad JS |
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 { |
9de6a51f | 134 | struct tty_port port; |
b4173f45 | 135 | struct moxa_board_conf *board; |
7bcf97d1 JS |
136 | void __iomem *tableAddr; |
137 | ||
1da177e4 | 138 | int type; |
1da177e4 | 139 | int cflag; |
7bcf97d1 | 140 | unsigned long statusflags; |
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 *); | |
1da177e4 LT |
197 | static void moxa_throttle(struct tty_struct *); |
198 | static void moxa_unthrottle(struct tty_struct *); | |
606d099c | 199 | static void moxa_set_termios(struct tty_struct *, struct ktermios *); |
1da177e4 LT |
200 | static void moxa_stop(struct tty_struct *); |
201 | static void moxa_start(struct tty_struct *); | |
202 | static void moxa_hangup(struct tty_struct *); | |
203 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file); | |
204 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
205 | unsigned int set, unsigned int clear); | |
206 | static void moxa_poll(unsigned long); | |
db1acaa6 | 207 | static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); |
6f56b658 | 208 | static void moxa_setup_empty_event(struct tty_struct *); |
d450b5a0 | 209 | static void moxa_shut_down(struct tty_struct *); |
31f35939 | 210 | static int moxa_carrier_raised(struct tty_port *); |
1da177e4 LT |
211 | /* |
212 | * moxa board interface functions: | |
213 | */ | |
b4173f45 JS |
214 | static void MoxaPortEnable(struct moxa_port *); |
215 | static void MoxaPortDisable(struct moxa_port *); | |
216 | static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); | |
217 | static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); | |
218 | static void MoxaPortLineCtrl(struct moxa_port *, int, int); | |
219 | static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); | |
220 | static int MoxaPortLineStatus(struct moxa_port *); | |
b4173f45 | 221 | static void MoxaPortFlushData(struct moxa_port *, int); |
d450b5a0 | 222 | static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int); |
7bcf97d1 | 223 | static int MoxaPortReadData(struct moxa_port *); |
b4173f45 JS |
224 | static int MoxaPortTxQueue(struct moxa_port *); |
225 | static int MoxaPortRxQueue(struct moxa_port *); | |
226 | static int MoxaPortTxFree(struct moxa_port *); | |
227 | static void MoxaPortTxDisable(struct moxa_port *); | |
228 | static void MoxaPortTxEnable(struct moxa_port *); | |
8f8ecbad JS |
229 | static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); |
230 | static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); | |
b4173f45 | 231 | static void MoxaSetFifo(struct moxa_port *port, int enable); |
1da177e4 | 232 | |
74d7d97b JS |
233 | /* |
234 | * I/O functions | |
235 | */ | |
236 | ||
237 | static void moxa_wait_finish(void __iomem *ofsAddr) | |
238 | { | |
239 | unsigned long end = jiffies + moxaFuncTout; | |
240 | ||
241 | while (readw(ofsAddr + FuncCode) != 0) | |
242 | if (time_after(jiffies, end)) | |
243 | return; | |
244 | if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) | |
245 | printk(KERN_WARNING "moxa function expired\n"); | |
246 | } | |
247 | ||
eaa95a8d | 248 | static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) |
74d7d97b JS |
249 | { |
250 | writew(arg, ofsAddr + FuncArg); | |
251 | writew(cmd, ofsAddr + FuncCode); | |
252 | moxa_wait_finish(ofsAddr); | |
253 | } | |
254 | ||
7bcf97d1 JS |
255 | static void moxa_low_water_check(void __iomem *ofsAddr) |
256 | { | |
257 | u16 rptr, wptr, mask, len; | |
258 | ||
259 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
260 | rptr = readw(ofsAddr + RXrptr); | |
261 | wptr = readw(ofsAddr + RXwptr); | |
262 | mask = readw(ofsAddr + RX_mask); | |
263 | len = (wptr - rptr) & mask; | |
264 | if (len <= Low_water) | |
265 | moxafunc(ofsAddr, FC_SendXon, 0); | |
266 | } | |
267 | } | |
268 | ||
74d7d97b JS |
269 | /* |
270 | * TTY operations | |
271 | */ | |
272 | ||
273 | static int moxa_ioctl(struct tty_struct *tty, struct file *file, | |
274 | unsigned int cmd, unsigned long arg) | |
275 | { | |
276 | struct moxa_port *ch = tty->driver_data; | |
277 | void __user *argp = (void __user *)arg; | |
a8f5cda0 | 278 | int status, ret = 0; |
74d7d97b JS |
279 | |
280 | if (tty->index == MAX_PORTS) { | |
281 | if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && | |
282 | cmd != MOXA_GETMSTATUS) | |
283 | return -EINVAL; | |
284 | } else if (!ch) | |
285 | return -ENODEV; | |
286 | ||
287 | switch (cmd) { | |
288 | case MOXA_GETDATACOUNT: | |
289 | moxaLog.tick = jiffies; | |
a8f5cda0 JS |
290 | if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) |
291 | ret = -EFAULT; | |
292 | break; | |
74d7d97b JS |
293 | case MOXA_FLUSH_QUEUE: |
294 | MoxaPortFlushData(ch, arg); | |
a8f5cda0 | 295 | break; |
74d7d97b JS |
296 | case MOXA_GET_IOQUEUE: { |
297 | struct moxaq_str __user *argm = argp; | |
298 | struct moxaq_str tmp; | |
299 | struct moxa_port *p; | |
300 | unsigned int i, j; | |
301 | ||
a8f5cda0 | 302 | mutex_lock(&moxa_openlock); |
74d7d97b JS |
303 | for (i = 0; i < MAX_BOARDS; i++) { |
304 | p = moxa_boards[i].ports; | |
305 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
306 | memset(&tmp, 0, sizeof(tmp)); | |
307 | if (moxa_boards[i].ready) { | |
308 | tmp.inq = MoxaPortRxQueue(p); | |
309 | tmp.outq = MoxaPortTxQueue(p); | |
310 | } | |
a8f5cda0 JS |
311 | if (copy_to_user(argm, &tmp, sizeof(tmp))) { |
312 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 313 | return -EFAULT; |
a8f5cda0 | 314 | } |
74d7d97b JS |
315 | } |
316 | } | |
a8f5cda0 JS |
317 | mutex_unlock(&moxa_openlock); |
318 | break; | |
74d7d97b JS |
319 | } case MOXA_GET_OQUEUE: |
320 | status = MoxaPortTxQueue(ch); | |
a8f5cda0 JS |
321 | ret = put_user(status, (unsigned long __user *)argp); |
322 | break; | |
74d7d97b JS |
323 | case MOXA_GET_IQUEUE: |
324 | status = MoxaPortRxQueue(ch); | |
a8f5cda0 JS |
325 | ret = put_user(status, (unsigned long __user *)argp); |
326 | break; | |
74d7d97b JS |
327 | case MOXA_GETMSTATUS: { |
328 | struct mxser_mstatus __user *argm = argp; | |
329 | struct mxser_mstatus tmp; | |
330 | struct moxa_port *p; | |
331 | unsigned int i, j; | |
332 | ||
a8f5cda0 | 333 | mutex_lock(&moxa_openlock); |
74d7d97b JS |
334 | for (i = 0; i < MAX_BOARDS; i++) { |
335 | p = moxa_boards[i].ports; | |
336 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
d450b5a0 | 337 | struct tty_struct *ttyp; |
74d7d97b JS |
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 | ||
d450b5a0 AC |
350 | ttyp = tty_port_tty_get(&p->port); |
351 | if (!ttyp || !ttyp->termios) | |
74d7d97b JS |
352 | tmp.cflag = p->cflag; |
353 | else | |
d450b5a0 AC |
354 | tmp.cflag = ttyp->termios->c_cflag; |
355 | tty_kref_put(tty); | |
74d7d97b | 356 | copy: |
a8f5cda0 JS |
357 | if (copy_to_user(argm, &tmp, sizeof(tmp))) { |
358 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 359 | return -EFAULT; |
a8f5cda0 | 360 | } |
74d7d97b JS |
361 | } |
362 | } | |
a8f5cda0 JS |
363 | mutex_unlock(&moxa_openlock); |
364 | break; | |
74d7d97b JS |
365 | } |
366 | case TIOCGSERIAL: | |
a8f5cda0 JS |
367 | mutex_lock(&moxa_openlock); |
368 | ret = moxa_get_serial_info(ch, argp); | |
369 | mutex_unlock(&moxa_openlock); | |
370 | break; | |
74d7d97b | 371 | case TIOCSSERIAL: |
a8f5cda0 JS |
372 | mutex_lock(&moxa_openlock); |
373 | ret = moxa_set_serial_info(ch, argp); | |
374 | mutex_unlock(&moxa_openlock); | |
375 | break; | |
376 | default: | |
377 | ret = -ENOIOCTLCMD; | |
74d7d97b | 378 | } |
a8f5cda0 | 379 | return ret; |
74d7d97b JS |
380 | } |
381 | ||
9e98966c | 382 | static int moxa_break_ctl(struct tty_struct *tty, int state) |
74d7d97b JS |
383 | { |
384 | struct moxa_port *port = tty->driver_data; | |
385 | ||
386 | moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, | |
387 | Magic_code); | |
9e98966c | 388 | return 0; |
74d7d97b JS |
389 | } |
390 | ||
b68e31d0 | 391 | static const struct tty_operations moxa_ops = { |
1da177e4 LT |
392 | .open = moxa_open, |
393 | .close = moxa_close, | |
394 | .write = moxa_write, | |
395 | .write_room = moxa_write_room, | |
396 | .flush_buffer = moxa_flush_buffer, | |
397 | .chars_in_buffer = moxa_chars_in_buffer, | |
1da177e4 LT |
398 | .ioctl = moxa_ioctl, |
399 | .throttle = moxa_throttle, | |
400 | .unthrottle = moxa_unthrottle, | |
401 | .set_termios = moxa_set_termios, | |
402 | .stop = moxa_stop, | |
403 | .start = moxa_start, | |
404 | .hangup = moxa_hangup, | |
74d7d97b | 405 | .break_ctl = moxa_break_ctl, |
1da177e4 LT |
406 | .tiocmget = moxa_tiocmget, |
407 | .tiocmset = moxa_tiocmset, | |
408 | }; | |
409 | ||
31f35939 AC |
410 | static const struct tty_port_operations moxa_port_ops = { |
411 | .carrier_raised = moxa_carrier_raised, | |
412 | }; | |
413 | ||
aa7e5221 | 414 | static struct tty_driver *moxaDriver; |
aa7e5221 | 415 | static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); |
34af946a | 416 | static DEFINE_SPINLOCK(moxa_lock); |
33f0f88f | 417 | |
74d7d97b JS |
418 | /* |
419 | * HW init | |
420 | */ | |
421 | ||
03718234 JS |
422 | static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) |
423 | { | |
424 | switch (brd->boardType) { | |
425 | case MOXA_BOARD_C218_ISA: | |
426 | case MOXA_BOARD_C218_PCI: | |
427 | if (model != 1) | |
428 | goto err; | |
429 | break; | |
430 | case MOXA_BOARD_CP204J: | |
431 | if (model != 3) | |
432 | goto err; | |
433 | break; | |
434 | default: | |
435 | if (model != 2) | |
436 | goto err; | |
437 | break; | |
438 | } | |
439 | return 0; | |
440 | err: | |
441 | return -EINVAL; | |
442 | } | |
443 | ||
444 | static int moxa_check_fw(const void *ptr) | |
445 | { | |
446 | const __le16 *lptr = ptr; | |
447 | ||
448 | if (*lptr != cpu_to_le16(0x7980)) | |
449 | return -EINVAL; | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
454 | static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, | |
455 | size_t len) | |
456 | { | |
457 | void __iomem *baseAddr = brd->basemem; | |
458 | u16 tmp; | |
459 | ||
460 | writeb(HW_reset, baseAddr + Control_reg); /* reset */ | |
461 | msleep(10); | |
462 | memset_io(baseAddr, 0, 4096); | |
463 | memcpy_toio(baseAddr, buf, len); /* download BIOS */ | |
464 | writeb(0, baseAddr + Control_reg); /* restart */ | |
465 | ||
466 | msleep(2000); | |
467 | ||
468 | switch (brd->boardType) { | |
469 | case MOXA_BOARD_C218_ISA: | |
470 | case MOXA_BOARD_C218_PCI: | |
471 | tmp = readw(baseAddr + C218_key); | |
472 | if (tmp != C218_KeyCode) | |
473 | goto err; | |
474 | break; | |
475 | case MOXA_BOARD_CP204J: | |
476 | tmp = readw(baseAddr + C218_key); | |
477 | if (tmp != CP204J_KeyCode) | |
478 | goto err; | |
479 | break; | |
480 | default: | |
481 | tmp = readw(baseAddr + C320_key); | |
482 | if (tmp != C320_KeyCode) | |
483 | goto err; | |
484 | tmp = readw(baseAddr + C320_status); | |
485 | if (tmp != STS_init) { | |
eaa95a8d | 486 | printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " |
03718234 JS |
487 | "module not found\n"); |
488 | return -EIO; | |
489 | } | |
490 | break; | |
491 | } | |
492 | ||
493 | return 0; | |
494 | err: | |
eaa95a8d | 495 | printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); |
03718234 JS |
496 | return -EIO; |
497 | } | |
498 | ||
499 | static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, | |
500 | size_t len) | |
501 | { | |
502 | void __iomem *baseAddr = brd->basemem; | |
503 | ||
504 | if (len < 7168) { | |
eaa95a8d | 505 | printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); |
03718234 JS |
506 | return -EINVAL; |
507 | } | |
508 | ||
509 | writew(len - 7168 - 2, baseAddr + C320bapi_len); | |
510 | writeb(1, baseAddr + Control_reg); /* Select Page 1 */ | |
511 | memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); | |
512 | writeb(2, baseAddr + Control_reg); /* Select Page 2 */ | |
513 | memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
5292bcd3 | 518 | static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, |
03718234 JS |
519 | size_t len) |
520 | { | |
521 | void __iomem *baseAddr = brd->basemem; | |
b46f69cd | 522 | const __le16 *uptr = ptr; |
03718234 | 523 | size_t wlen, len2, j; |
5292bcd3 | 524 | unsigned long key, loadbuf, loadlen, checksum, checksum_ok; |
08d01c79 | 525 | unsigned int i, retry; |
03718234 JS |
526 | u16 usum, keycode; |
527 | ||
5292bcd3 JS |
528 | keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : |
529 | C218_KeyCode; | |
03718234 | 530 | |
5292bcd3 JS |
531 | switch (brd->boardType) { |
532 | case MOXA_BOARD_CP204J: | |
533 | case MOXA_BOARD_C218_ISA: | |
534 | case MOXA_BOARD_C218_PCI: | |
535 | key = C218_key; | |
536 | loadbuf = C218_LoadBuf; | |
537 | loadlen = C218DLoad_len; | |
538 | checksum = C218check_sum; | |
539 | checksum_ok = C218chksum_ok; | |
540 | break; | |
541 | default: | |
542 | key = C320_key; | |
543 | keycode = C320_KeyCode; | |
544 | loadbuf = C320_LoadBuf; | |
545 | loadlen = C320DLoad_len; | |
546 | checksum = C320check_sum; | |
547 | checksum_ok = C320chksum_ok; | |
548 | break; | |
03718234 | 549 | } |
03718234 JS |
550 | |
551 | usum = 0; | |
552 | wlen = len >> 1; | |
553 | for (i = 0; i < wlen; i++) | |
554 | usum += le16_to_cpu(uptr[i]); | |
555 | retry = 0; | |
556 | do { | |
557 | wlen = len >> 1; | |
558 | j = 0; | |
559 | while (wlen) { | |
560 | len2 = (wlen > 2048) ? 2048 : wlen; | |
561 | wlen -= len2; | |
5292bcd3 | 562 | memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); |
03718234 | 563 | j += len2 << 1; |
5292bcd3 JS |
564 | |
565 | writew(len2, baseAddr + loadlen); | |
566 | writew(0, baseAddr + key); | |
567 | for (i = 0; i < 100; i++) { | |
568 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
569 | break; |
570 | msleep(10); | |
571 | } | |
5292bcd3 | 572 | if (readw(baseAddr + key) != keycode) |
03718234 JS |
573 | return -EIO; |
574 | } | |
5292bcd3 JS |
575 | writew(0, baseAddr + loadlen); |
576 | writew(usum, baseAddr + checksum); | |
577 | writew(0, baseAddr + key); | |
578 | for (i = 0; i < 100; i++) { | |
579 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
580 | break; |
581 | msleep(10); | |
582 | } | |
583 | retry++; | |
5292bcd3 JS |
584 | } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); |
585 | if (readb(baseAddr + checksum_ok) != 1) | |
03718234 JS |
586 | return -EIO; |
587 | ||
5292bcd3 | 588 | writew(0, baseAddr + key); |
03718234 JS |
589 | for (i = 0; i < 600; i++) { |
590 | if (readw(baseAddr + Magic_no) == Magic_code) | |
591 | break; | |
592 | msleep(10); | |
593 | } | |
594 | if (readw(baseAddr + Magic_no) != Magic_code) | |
595 | return -EIO; | |
596 | ||
08d01c79 | 597 | if (MOXA_IS_320(brd)) { |
5292bcd3 JS |
598 | if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ |
599 | writew(0x3800, baseAddr + TMS320_PORT1); | |
600 | writew(0x3900, baseAddr + TMS320_PORT2); | |
601 | writew(28499, baseAddr + TMS320_CLOCK); | |
602 | } else { | |
603 | writew(0x3200, baseAddr + TMS320_PORT1); | |
604 | writew(0x3400, baseAddr + TMS320_PORT2); | |
605 | writew(19999, baseAddr + TMS320_CLOCK); | |
606 | } | |
03718234 JS |
607 | } |
608 | writew(1, baseAddr + Disable_IRQ); | |
609 | writew(0, baseAddr + Magic_no); | |
610 | for (i = 0; i < 500; i++) { | |
611 | if (readw(baseAddr + Magic_no) == Magic_code) | |
612 | break; | |
613 | msleep(10); | |
614 | } | |
615 | if (readw(baseAddr + Magic_no) != Magic_code) | |
616 | return -EIO; | |
617 | ||
08d01c79 | 618 | if (MOXA_IS_320(brd)) { |
5292bcd3 JS |
619 | j = readw(baseAddr + Module_cnt); |
620 | if (j <= 0) | |
621 | return -EIO; | |
622 | brd->numPorts = j * 8; | |
623 | writew(j, baseAddr + Module_no); | |
624 | writew(0, baseAddr + Magic_no); | |
625 | for (i = 0; i < 600; i++) { | |
626 | if (readw(baseAddr + Magic_no) == Magic_code) | |
627 | break; | |
628 | msleep(10); | |
629 | } | |
630 | if (readw(baseAddr + Magic_no) != Magic_code) | |
631 | return -EIO; | |
03718234 | 632 | } |
03718234 JS |
633 | brd->intNdx = baseAddr + IRQindex; |
634 | brd->intPend = baseAddr + IRQpending; | |
635 | brd->intTable = baseAddr + IRQtable; | |
636 | ||
637 | return 0; | |
638 | } | |
639 | ||
640 | static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, | |
641 | size_t len) | |
642 | { | |
643 | void __iomem *ofsAddr, *baseAddr = brd->basemem; | |
644 | struct moxa_port *port; | |
645 | int retval, i; | |
646 | ||
647 | if (len % 2) { | |
eaa95a8d | 648 | printk(KERN_ERR "MOXA: bios length is not even\n"); |
03718234 JS |
649 | return -EINVAL; |
650 | } | |
651 | ||
5292bcd3 JS |
652 | retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ |
653 | if (retval) | |
654 | return retval; | |
655 | ||
03718234 JS |
656 | switch (brd->boardType) { |
657 | case MOXA_BOARD_C218_ISA: | |
658 | case MOXA_BOARD_C218_PCI: | |
659 | case MOXA_BOARD_CP204J: | |
03718234 JS |
660 | port = brd->ports; |
661 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 662 | port->board = brd; |
03718234 JS |
663 | port->DCDState = 0; |
664 | port->tableAddr = baseAddr + Extern_table + | |
665 | Extern_size * i; | |
666 | ofsAddr = port->tableAddr; | |
667 | writew(C218rx_mask, ofsAddr + RX_mask); | |
668 | writew(C218tx_mask, ofsAddr + TX_mask); | |
669 | writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); | |
670 | writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); | |
671 | ||
672 | writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); | |
673 | writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); | |
674 | ||
675 | } | |
676 | break; | |
677 | default: | |
03718234 JS |
678 | port = brd->ports; |
679 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 680 | port->board = brd; |
03718234 JS |
681 | port->DCDState = 0; |
682 | port->tableAddr = baseAddr + Extern_table + | |
683 | Extern_size * i; | |
684 | ofsAddr = port->tableAddr; | |
685 | switch (brd->numPorts) { | |
686 | case 8: | |
687 | writew(C320p8rx_mask, ofsAddr + RX_mask); | |
688 | writew(C320p8tx_mask, ofsAddr + TX_mask); | |
689 | writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); | |
690 | writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); | |
691 | writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); | |
692 | writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); | |
693 | ||
694 | break; | |
695 | case 16: | |
696 | writew(C320p16rx_mask, ofsAddr + RX_mask); | |
697 | writew(C320p16tx_mask, ofsAddr + TX_mask); | |
698 | writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); | |
699 | writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); | |
700 | writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); | |
701 | writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); | |
702 | break; | |
703 | ||
704 | case 24: | |
705 | writew(C320p24rx_mask, ofsAddr + RX_mask); | |
706 | writew(C320p24tx_mask, ofsAddr + TX_mask); | |
707 | writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); | |
708 | writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); | |
709 | writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); | |
710 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
711 | break; | |
712 | case 32: | |
713 | writew(C320p32rx_mask, ofsAddr + RX_mask); | |
714 | writew(C320p32tx_mask, ofsAddr + TX_mask); | |
715 | writew(C320p32tx_ofs, ofsAddr + Ofs_txb); | |
716 | writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); | |
717 | writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); | |
718 | writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); | |
719 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
720 | break; | |
721 | } | |
722 | } | |
723 | break; | |
724 | } | |
03718234 JS |
725 | return 0; |
726 | } | |
727 | ||
728 | static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) | |
729 | { | |
2bca76e8 | 730 | const void *ptr = fw->data; |
03718234 JS |
731 | char rsn[64]; |
732 | u16 lens[5]; | |
733 | size_t len; | |
734 | unsigned int a, lenp, lencnt; | |
735 | int ret = -EINVAL; | |
736 | struct { | |
737 | __le32 magic; /* 0x34303430 */ | |
738 | u8 reserved1[2]; | |
739 | u8 type; /* UNIX = 3 */ | |
740 | u8 model; /* C218T=1, C320T=2, CP204=3 */ | |
741 | u8 reserved2[8]; | |
742 | __le16 len[5]; | |
2bca76e8 | 743 | } const *hdr = ptr; |
03718234 JS |
744 | |
745 | BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); | |
746 | ||
747 | if (fw->size < MOXA_FW_HDRLEN) { | |
748 | strcpy(rsn, "too short (even header won't fit)"); | |
749 | goto err; | |
750 | } | |
751 | if (hdr->magic != cpu_to_le32(0x30343034)) { | |
752 | sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); | |
753 | goto err; | |
754 | } | |
755 | if (hdr->type != 3) { | |
756 | sprintf(rsn, "not for linux, type is %u", hdr->type); | |
757 | goto err; | |
758 | } | |
759 | if (moxa_check_fw_model(brd, hdr->model)) { | |
760 | sprintf(rsn, "not for this card, model is %u", hdr->model); | |
761 | goto err; | |
762 | } | |
763 | ||
764 | len = MOXA_FW_HDRLEN; | |
765 | lencnt = hdr->model == 2 ? 5 : 3; | |
766 | for (a = 0; a < ARRAY_SIZE(lens); a++) { | |
767 | lens[a] = le16_to_cpu(hdr->len[a]); | |
768 | if (lens[a] && len + lens[a] <= fw->size && | |
769 | moxa_check_fw(&fw->data[len])) | |
eaa95a8d | 770 | printk(KERN_WARNING "MOXA firmware: unexpected input " |
03718234 JS |
771 | "at offset %u, but going on\n", (u32)len); |
772 | if (!lens[a] && a < lencnt) { | |
773 | sprintf(rsn, "too few entries in fw file"); | |
774 | goto err; | |
775 | } | |
776 | len += lens[a]; | |
777 | } | |
778 | ||
779 | if (len != fw->size) { | |
780 | sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, | |
781 | (u32)len); | |
782 | goto err; | |
783 | } | |
784 | ||
785 | ptr += MOXA_FW_HDRLEN; | |
786 | lenp = 0; /* bios */ | |
787 | ||
788 | strcpy(rsn, "read above"); | |
789 | ||
790 | ret = moxa_load_bios(brd, ptr, lens[lenp]); | |
791 | if (ret) | |
792 | goto err; | |
793 | ||
794 | /* we skip the tty section (lens[1]), since we don't need it */ | |
795 | ptr += lens[lenp] + lens[lenp + 1]; | |
796 | lenp += 2; /* comm */ | |
797 | ||
798 | if (hdr->model == 2) { | |
799 | ret = moxa_load_320b(brd, ptr, lens[lenp]); | |
800 | if (ret) | |
801 | goto err; | |
802 | /* skip another tty */ | |
803 | ptr += lens[lenp] + lens[lenp + 1]; | |
804 | lenp += 2; | |
805 | } | |
806 | ||
807 | ret = moxa_load_code(brd, ptr, lens[lenp]); | |
808 | if (ret) | |
809 | goto err; | |
810 | ||
811 | return 0; | |
812 | err: | |
813 | printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); | |
814 | return ret; | |
815 | } | |
816 | ||
817 | static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) | |
818 | { | |
819 | const struct firmware *fw; | |
820 | const char *file; | |
810ab09b JS |
821 | struct moxa_port *p; |
822 | unsigned int i; | |
03718234 JS |
823 | int ret; |
824 | ||
810ab09b JS |
825 | brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), |
826 | GFP_KERNEL); | |
827 | if (brd->ports == NULL) { | |
828 | printk(KERN_ERR "cannot allocate memory for ports\n"); | |
829 | ret = -ENOMEM; | |
830 | goto err; | |
831 | } | |
832 | ||
833 | for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { | |
44b7d1b3 | 834 | tty_port_init(&p->port); |
31f35939 | 835 | p->port.ops = &moxa_port_ops; |
810ab09b | 836 | p->type = PORT_16550A; |
810ab09b | 837 | p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
810ab09b JS |
838 | } |
839 | ||
03718234 JS |
840 | switch (brd->boardType) { |
841 | case MOXA_BOARD_C218_ISA: | |
842 | case MOXA_BOARD_C218_PCI: | |
843 | file = "c218tunx.cod"; | |
844 | break; | |
845 | case MOXA_BOARD_CP204J: | |
846 | file = "cp204unx.cod"; | |
847 | break; | |
848 | default: | |
849 | file = "c320tunx.cod"; | |
850 | break; | |
851 | } | |
852 | ||
853 | ret = request_firmware(&fw, file, dev); | |
854 | if (ret) { | |
ec09cd56 JS |
855 | printk(KERN_ERR "MOXA: request_firmware failed. Make sure " |
856 | "you've placed '%s' file into your firmware " | |
857 | "loader directory (e.g. /lib/firmware)\n", | |
858 | file); | |
810ab09b | 859 | goto err_free; |
03718234 JS |
860 | } |
861 | ||
862 | ret = moxa_load_fw(brd, fw); | |
863 | ||
864 | release_firmware(fw); | |
810ab09b JS |
865 | |
866 | if (ret) | |
867 | goto err_free; | |
868 | ||
2a541341 | 869 | spin_lock_bh(&moxa_lock); |
810ab09b | 870 | brd->ready = 1; |
0bcc4caa JS |
871 | if (!timer_pending(&moxaTimer)) |
872 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
2a541341 | 873 | spin_unlock_bh(&moxa_lock); |
0bcc4caa | 874 | |
810ab09b JS |
875 | return 0; |
876 | err_free: | |
877 | kfree(brd->ports); | |
878 | err: | |
03718234 JS |
879 | return ret; |
880 | } | |
881 | ||
810ab09b JS |
882 | static void moxa_board_deinit(struct moxa_board_conf *brd) |
883 | { | |
a8f5cda0 JS |
884 | unsigned int a, opened; |
885 | ||
886 | mutex_lock(&moxa_openlock); | |
7bcf97d1 | 887 | spin_lock_bh(&moxa_lock); |
810ab09b | 888 | brd->ready = 0; |
7bcf97d1 | 889 | spin_unlock_bh(&moxa_lock); |
a8f5cda0 JS |
890 | |
891 | /* pci hot-un-plug support */ | |
892 | for (a = 0; a < brd->numPorts; a++) | |
d450b5a0 AC |
893 | if (brd->ports[a].port.flags & ASYNC_INITIALIZED) { |
894 | struct tty_struct *tty = tty_port_tty_get( | |
895 | &brd->ports[a].port); | |
896 | if (tty) { | |
897 | tty_hangup(tty); | |
898 | tty_kref_put(tty); | |
899 | } | |
900 | } | |
a8f5cda0 JS |
901 | while (1) { |
902 | opened = 0; | |
903 | for (a = 0; a < brd->numPorts; a++) | |
9de6a51f | 904 | if (brd->ports[a].port.flags & ASYNC_INITIALIZED) |
a8f5cda0 JS |
905 | opened++; |
906 | mutex_unlock(&moxa_openlock); | |
907 | if (!opened) | |
908 | break; | |
909 | msleep(50); | |
910 | mutex_lock(&moxa_openlock); | |
911 | } | |
912 | ||
810ab09b JS |
913 | iounmap(brd->basemem); |
914 | brd->basemem = NULL; | |
915 | kfree(brd->ports); | |
916 | } | |
917 | ||
1da177e4 | 918 | #ifdef CONFIG_PCI |
9cde5bf0 JS |
919 | static int __devinit moxa_pci_probe(struct pci_dev *pdev, |
920 | const struct pci_device_id *ent) | |
1da177e4 | 921 | { |
9cde5bf0 JS |
922 | struct moxa_board_conf *board; |
923 | unsigned int i; | |
924 | int board_type = ent->driver_data; | |
925 | int retval; | |
926 | ||
927 | retval = pci_enable_device(pdev); | |
7aeb95da JS |
928 | if (retval) { |
929 | dev_err(&pdev->dev, "can't enable pci device\n"); | |
9cde5bf0 | 930 | goto err; |
7aeb95da | 931 | } |
9cde5bf0 JS |
932 | |
933 | for (i = 0; i < MAX_BOARDS; i++) | |
934 | if (moxa_boards[i].basemem == NULL) | |
935 | break; | |
936 | ||
937 | retval = -ENODEV; | |
938 | if (i >= MAX_BOARDS) { | |
7aeb95da | 939 | dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " |
9cde5bf0 JS |
940 | "found. Board is ignored.\n", MAX_BOARDS); |
941 | goto err; | |
942 | } | |
943 | ||
944 | board = &moxa_boards[i]; | |
e46a5e3f JS |
945 | |
946 | retval = pci_request_region(pdev, 2, "moxa-base"); | |
947 | if (retval) { | |
948 | dev_err(&pdev->dev, "can't request pci region 2\n"); | |
949 | goto err; | |
950 | } | |
951 | ||
24cb2335 | 952 | board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); |
7aeb95da JS |
953 | if (board->basemem == NULL) { |
954 | dev_err(&pdev->dev, "can't remap io space 2\n"); | |
e46a5e3f | 955 | goto err_reg; |
7aeb95da | 956 | } |
9cde5bf0 | 957 | |
1da177e4 LT |
958 | board->boardType = board_type; |
959 | switch (board_type) { | |
960 | case MOXA_BOARD_C218_ISA: | |
961 | case MOXA_BOARD_C218_PCI: | |
962 | board->numPorts = 8; | |
963 | break; | |
964 | ||
965 | case MOXA_BOARD_CP204J: | |
966 | board->numPorts = 4; | |
967 | break; | |
968 | default: | |
969 | board->numPorts = 0; | |
970 | break; | |
971 | } | |
972 | board->busType = MOXA_BUS_TYPE_PCI; | |
a784bf7c | 973 | |
03718234 JS |
974 | retval = moxa_init_board(board, &pdev->dev); |
975 | if (retval) | |
976 | goto err_base; | |
977 | ||
9cde5bf0 | 978 | pci_set_drvdata(pdev, board); |
1da177e4 | 979 | |
bb9f910a JS |
980 | dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", |
981 | moxa_brdname[board_type - 1], board->numPorts); | |
982 | ||
eaa95a8d | 983 | return 0; |
03718234 JS |
984 | err_base: |
985 | iounmap(board->basemem); | |
986 | board->basemem = NULL; | |
e46a5e3f JS |
987 | err_reg: |
988 | pci_release_region(pdev, 2); | |
9cde5bf0 JS |
989 | err: |
990 | return retval; | |
991 | } | |
992 | ||
993 | static void __devexit moxa_pci_remove(struct pci_dev *pdev) | |
994 | { | |
995 | struct moxa_board_conf *brd = pci_get_drvdata(pdev); | |
996 | ||
810ab09b JS |
997 | moxa_board_deinit(brd); |
998 | ||
e46a5e3f | 999 | pci_release_region(pdev, 2); |
1da177e4 | 1000 | } |
a784bf7c JS |
1001 | |
1002 | static struct pci_driver moxa_pci_driver = { | |
1003 | .name = "moxa", | |
1004 | .id_table = moxa_pcibrds, | |
1005 | .probe = moxa_pci_probe, | |
1006 | .remove = __devexit_p(moxa_pci_remove) | |
1007 | }; | |
1da177e4 LT |
1008 | #endif /* CONFIG_PCI */ |
1009 | ||
1010 | static int __init moxa_init(void) | |
1011 | { | |
810ab09b | 1012 | unsigned int isabrds = 0; |
d353eca4 | 1013 | int retval = 0; |
1da177e4 | 1014 | |
7aeb95da JS |
1015 | printk(KERN_INFO "MOXA Intellio family driver version %s\n", |
1016 | MOXA_VERSION); | |
1da177e4 LT |
1017 | moxaDriver = alloc_tty_driver(MAX_PORTS + 1); |
1018 | if (!moxaDriver) | |
1019 | return -ENOMEM; | |
1020 | ||
1da177e4 | 1021 | moxaDriver->owner = THIS_MODULE; |
9b4e3b13 | 1022 | moxaDriver->name = "ttyMX"; |
1da177e4 LT |
1023 | moxaDriver->major = ttymajor; |
1024 | moxaDriver->minor_start = 0; | |
1025 | moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; | |
1026 | moxaDriver->subtype = SERIAL_TYPE_NORMAL; | |
1027 | moxaDriver->init_termios = tty_std_termios; | |
1da177e4 | 1028 | moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
606d099c AC |
1029 | moxaDriver->init_termios.c_ispeed = 9600; |
1030 | moxaDriver->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
1031 | moxaDriver->flags = TTY_DRIVER_REAL_RAW; |
1032 | tty_set_operations(moxaDriver, &moxa_ops); | |
1033 | ||
1da177e4 | 1034 | if (tty_register_driver(moxaDriver)) { |
eaa95a8d | 1035 | printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); |
1da177e4 LT |
1036 | put_tty_driver(moxaDriver); |
1037 | return -1; | |
1038 | } | |
1da177e4 | 1039 | |
d353eca4 | 1040 | /* Find the boards defined from module args. */ |
1da177e4 | 1041 | #ifdef MODULE |
d353eca4 JS |
1042 | { |
1043 | struct moxa_board_conf *brd = moxa_boards; | |
810ab09b | 1044 | unsigned int i; |
1da177e4 | 1045 | for (i = 0; i < MAX_BOARDS; i++) { |
d353eca4 JS |
1046 | if (!baseaddr[i]) |
1047 | break; | |
1048 | if (type[i] == MOXA_BOARD_C218_ISA || | |
1049 | type[i] == MOXA_BOARD_C320_ISA) { | |
7aeb95da | 1050 | pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", |
d353eca4 JS |
1051 | isabrds + 1, moxa_brdname[type[i] - 1], |
1052 | baseaddr[i]); | |
1053 | brd->boardType = type[i]; | |
1054 | brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : | |
1055 | numports[i]; | |
1056 | brd->busType = MOXA_BUS_TYPE_ISA; | |
24cb2335 | 1057 | brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); |
d353eca4 | 1058 | if (!brd->basemem) { |
eaa95a8d | 1059 | printk(KERN_ERR "MOXA: can't remap %lx\n", |
d353eca4 | 1060 | baseaddr[i]); |
1da177e4 LT |
1061 | continue; |
1062 | } | |
03718234 JS |
1063 | if (moxa_init_board(brd, NULL)) { |
1064 | iounmap(brd->basemem); | |
1065 | brd->basemem = NULL; | |
1066 | continue; | |
1067 | } | |
d353eca4 | 1068 | |
bb9f910a JS |
1069 | printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " |
1070 | "ready (%u ports, firmware loaded)\n", | |
1071 | baseaddr[i], brd->numPorts); | |
1072 | ||
d353eca4 JS |
1073 | brd++; |
1074 | isabrds++; | |
1da177e4 LT |
1075 | } |
1076 | } | |
d353eca4 | 1077 | } |
1da177e4 | 1078 | #endif |
a784bf7c | 1079 | |
1da177e4 | 1080 | #ifdef CONFIG_PCI |
a784bf7c JS |
1081 | retval = pci_register_driver(&moxa_pci_driver); |
1082 | if (retval) { | |
eaa95a8d | 1083 | printk(KERN_ERR "Can't register MOXA pci driver!\n"); |
d353eca4 | 1084 | if (isabrds) |
a784bf7c | 1085 | retval = 0; |
1da177e4 LT |
1086 | } |
1087 | #endif | |
a784bf7c | 1088 | |
a784bf7c | 1089 | return retval; |
1da177e4 LT |
1090 | } |
1091 | ||
1092 | static void __exit moxa_exit(void) | |
1093 | { | |
eaa95a8d | 1094 | unsigned int i; |
1da177e4 | 1095 | |
9cde5bf0 | 1096 | #ifdef CONFIG_PCI |
a784bf7c | 1097 | pci_unregister_driver(&moxa_pci_driver); |
9cde5bf0 | 1098 | #endif |
a784bf7c | 1099 | |
810ab09b JS |
1100 | for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ |
1101 | if (moxa_boards[i].ready) | |
1102 | moxa_board_deinit(&moxa_boards[i]); | |
2a541341 JS |
1103 | |
1104 | del_timer_sync(&moxaTimer); | |
1105 | ||
1106 | if (tty_unregister_driver(moxaDriver)) | |
1107 | printk(KERN_ERR "Couldn't unregister MOXA Intellio family " | |
1108 | "serial driver\n"); | |
1109 | put_tty_driver(moxaDriver); | |
1da177e4 LT |
1110 | } |
1111 | ||
1112 | module_init(moxa_init); | |
1113 | module_exit(moxa_exit); | |
1114 | ||
d450b5a0 | 1115 | static void moxa_close_port(struct tty_struct *tty) |
a8f5cda0 | 1116 | { |
d450b5a0 AC |
1117 | struct moxa_port *ch = tty->driver_data; |
1118 | moxa_shut_down(tty); | |
a8f5cda0 | 1119 | MoxaPortFlushData(ch, 2); |
9de6a51f | 1120 | ch->port.flags &= ~ASYNC_NORMAL_ACTIVE; |
d450b5a0 AC |
1121 | tty->driver_data = NULL; |
1122 | tty_port_tty_set(&ch->port, NULL); | |
a8f5cda0 JS |
1123 | } |
1124 | ||
31f35939 AC |
1125 | static int moxa_carrier_raised(struct tty_port *port) |
1126 | { | |
1127 | struct moxa_port *ch = container_of(port, struct moxa_port, port); | |
1128 | int dcd; | |
1129 | ||
1130 | spin_lock_bh(&moxa_lock); | |
1131 | dcd = ch->DCDState; | |
1132 | spin_unlock_bh(&moxa_lock); | |
1133 | return dcd; | |
1134 | } | |
1135 | ||
a8f5cda0 JS |
1136 | static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, |
1137 | struct moxa_port *ch) | |
1138 | { | |
31f35939 | 1139 | struct tty_port *port = &ch->port; |
a8f5cda0 JS |
1140 | DEFINE_WAIT(wait); |
1141 | int retval = 0; | |
1142 | u8 dcd; | |
1143 | ||
1144 | while (1) { | |
31f35939 | 1145 | prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE); |
a8f5cda0 JS |
1146 | if (tty_hung_up_p(filp)) { |
1147 | #ifdef SERIAL_DO_RESTART | |
1148 | retval = -ERESTARTSYS; | |
1149 | #else | |
1150 | retval = -EAGAIN; | |
1151 | #endif | |
1152 | break; | |
1153 | } | |
31f35939 | 1154 | dcd = tty_port_carrier_raised(port); |
a8f5cda0 JS |
1155 | if (dcd) |
1156 | break; | |
1157 | ||
1158 | if (signal_pending(current)) { | |
1159 | retval = -ERESTARTSYS; | |
1160 | break; | |
1161 | } | |
1162 | schedule(); | |
1163 | } | |
31f35939 | 1164 | finish_wait(&port->open_wait, &wait); |
a8f5cda0 JS |
1165 | |
1166 | return retval; | |
1167 | } | |
1168 | ||
1da177e4 LT |
1169 | static int moxa_open(struct tty_struct *tty, struct file *filp) |
1170 | { | |
810ab09b | 1171 | struct moxa_board_conf *brd; |
8f8ecbad | 1172 | struct moxa_port *ch; |
1da177e4 LT |
1173 | int port; |
1174 | int retval; | |
1da177e4 | 1175 | |
11324edd | 1176 | port = tty->index; |
1da177e4 | 1177 | if (port == MAX_PORTS) { |
74d7d97b | 1178 | return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; |
1da177e4 | 1179 | } |
a8f5cda0 JS |
1180 | if (mutex_lock_interruptible(&moxa_openlock)) |
1181 | return -ERESTARTSYS; | |
810ab09b | 1182 | brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; |
a8f5cda0 JS |
1183 | if (!brd->ready) { |
1184 | mutex_unlock(&moxa_openlock); | |
810ab09b | 1185 | return -ENODEV; |
a8f5cda0 | 1186 | } |
1da177e4 | 1187 | |
f0e85277 DE |
1188 | if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) { |
1189 | mutex_unlock(&moxa_openlock); | |
1190 | return -ENODEV; | |
1191 | } | |
1192 | ||
810ab09b | 1193 | ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; |
9de6a51f | 1194 | ch->port.count++; |
1da177e4 | 1195 | tty->driver_data = ch; |
d450b5a0 | 1196 | tty_port_tty_set(&ch->port, tty); |
9de6a51f | 1197 | if (!(ch->port.flags & ASYNC_INITIALIZED)) { |
1da177e4 | 1198 | ch->statusflags = 0; |
db1acaa6 | 1199 | moxa_set_tty_param(tty, tty->termios); |
b4173f45 JS |
1200 | MoxaPortLineCtrl(ch, 1, 1); |
1201 | MoxaPortEnable(ch); | |
a8f5cda0 | 1202 | MoxaSetFifo(ch, ch->type == PORT_16550A); |
9de6a51f | 1203 | ch->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1204 | } |
a8f5cda0 | 1205 | mutex_unlock(&moxa_openlock); |
1da177e4 | 1206 | |
a8f5cda0 JS |
1207 | retval = 0; |
1208 | if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) | |
1209 | retval = moxa_block_till_ready(tty, filp, ch); | |
1210 | mutex_lock(&moxa_openlock); | |
1211 | if (retval) { | |
9de6a51f AC |
1212 | if (ch->port.count) /* 0 means already hung up... */ |
1213 | if (--ch->port.count == 0) | |
d450b5a0 | 1214 | moxa_close_port(tty); |
a8f5cda0 | 1215 | } else |
9de6a51f | 1216 | ch->port.flags |= ASYNC_NORMAL_ACTIVE; |
a8f5cda0 | 1217 | mutex_unlock(&moxa_openlock); |
752a4787 | 1218 | |
a8f5cda0 | 1219 | return retval; |
1da177e4 LT |
1220 | } |
1221 | ||
1222 | static void moxa_close(struct tty_struct *tty, struct file *filp) | |
1223 | { | |
8f8ecbad | 1224 | struct moxa_port *ch; |
1da177e4 LT |
1225 | int port; |
1226 | ||
11324edd | 1227 | port = tty->index; |
a8f5cda0 | 1228 | if (port == MAX_PORTS || tty_hung_up_p(filp)) |
1da177e4 | 1229 | return; |
1da177e4 | 1230 | |
a8f5cda0 JS |
1231 | mutex_lock(&moxa_openlock); |
1232 | ch = tty->driver_data; | |
1233 | if (ch == NULL) | |
1234 | goto unlock; | |
9de6a51f | 1235 | if (tty->count == 1 && ch->port.count != 1) { |
7aeb95da | 1236 | printk(KERN_WARNING "moxa_close: bad serial port count; " |
9de6a51f AC |
1237 | "tty->count is 1, ch->port.count is %d\n", ch->port.count); |
1238 | ch->port.count = 1; | |
1da177e4 | 1239 | } |
9de6a51f | 1240 | if (--ch->port.count < 0) { |
7aeb95da JS |
1241 | printk(KERN_WARNING "moxa_close: bad serial port count, " |
1242 | "device=%s\n", tty->name); | |
9de6a51f | 1243 | ch->port.count = 0; |
1da177e4 | 1244 | } |
9de6a51f | 1245 | if (ch->port.count) |
a8f5cda0 | 1246 | goto unlock; |
1da177e4 LT |
1247 | |
1248 | ch->cflag = tty->termios->c_cflag; | |
9de6a51f | 1249 | if (ch->port.flags & ASYNC_INITIALIZED) { |
6f56b658 | 1250 | moxa_setup_empty_event(tty); |
1da177e4 | 1251 | tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ |
1da177e4 | 1252 | } |
1da177e4 | 1253 | |
d450b5a0 | 1254 | moxa_close_port(tty); |
a8f5cda0 JS |
1255 | unlock: |
1256 | mutex_unlock(&moxa_openlock); | |
1da177e4 LT |
1257 | } |
1258 | ||
1259 | static int moxa_write(struct tty_struct *tty, | |
1260 | const unsigned char *buf, int count) | |
1261 | { | |
b4173f45 | 1262 | struct moxa_port *ch = tty->driver_data; |
b4173f45 | 1263 | int len; |
1da177e4 | 1264 | |
1da177e4 | 1265 | if (ch == NULL) |
b4173f45 | 1266 | return 0; |
33f0f88f | 1267 | |
7bcf97d1 | 1268 | spin_lock_bh(&moxa_lock); |
d450b5a0 | 1269 | len = MoxaPortWriteData(tty, buf, count); |
7bcf97d1 | 1270 | spin_unlock_bh(&moxa_lock); |
1da177e4 | 1271 | |
1da177e4 | 1272 | ch->statusflags |= LOWWAIT; |
eaa95a8d | 1273 | return len; |
1da177e4 LT |
1274 | } |
1275 | ||
1276 | static int moxa_write_room(struct tty_struct *tty) | |
1277 | { | |
8f8ecbad | 1278 | struct moxa_port *ch; |
1da177e4 LT |
1279 | |
1280 | if (tty->stopped) | |
eaa95a8d | 1281 | return 0; |
b4173f45 | 1282 | ch = tty->driver_data; |
1da177e4 | 1283 | if (ch == NULL) |
eaa95a8d | 1284 | return 0; |
b4173f45 | 1285 | return MoxaPortTxFree(ch); |
1da177e4 LT |
1286 | } |
1287 | ||
1288 | static void moxa_flush_buffer(struct tty_struct *tty) | |
1289 | { | |
b4173f45 | 1290 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1291 | |
1292 | if (ch == NULL) | |
1293 | return; | |
b4173f45 | 1294 | MoxaPortFlushData(ch, 1); |
1da177e4 LT |
1295 | tty_wakeup(tty); |
1296 | } | |
1297 | ||
1298 | static int moxa_chars_in_buffer(struct tty_struct *tty) | |
1299 | { | |
b4173f45 | 1300 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1301 | int chars; |
1da177e4 LT |
1302 | |
1303 | /* | |
1304 | * Sigh...I have to check if driver_data is NULL here, because | |
1305 | * if an open() fails, the TTY subsystem eventually calls | |
1306 | * tty_wait_until_sent(), which calls the driver's chars_in_buffer() | |
1307 | * routine. And since the open() failed, we return 0 here. TDJ | |
1308 | */ | |
1309 | if (ch == NULL) | |
eaa95a8d | 1310 | return 0; |
978e595f | 1311 | lock_kernel(); |
b4173f45 | 1312 | chars = MoxaPortTxQueue(ch); |
1da177e4 LT |
1313 | if (chars) { |
1314 | /* | |
1315 | * Make it possible to wakeup anything waiting for output | |
1316 | * in tty_ioctl.c, etc. | |
1317 | */ | |
1318 | if (!(ch->statusflags & EMPTYWAIT)) | |
6f56b658 | 1319 | moxa_setup_empty_event(tty); |
1da177e4 | 1320 | } |
978e595f | 1321 | unlock_kernel(); |
eaa95a8d | 1322 | return chars; |
1da177e4 LT |
1323 | } |
1324 | ||
1da177e4 LT |
1325 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file) |
1326 | { | |
a8f5cda0 | 1327 | struct moxa_port *ch; |
1da177e4 LT |
1328 | int flag = 0, dtr, rts; |
1329 | ||
a8f5cda0 JS |
1330 | mutex_lock(&moxa_openlock); |
1331 | ch = tty->driver_data; | |
1332 | if (!ch) { | |
1333 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1334 | return -EINVAL; |
a8f5cda0 | 1335 | } |
1da177e4 | 1336 | |
b4173f45 | 1337 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1338 | if (dtr) |
1339 | flag |= TIOCM_DTR; | |
1340 | if (rts) | |
1341 | flag |= TIOCM_RTS; | |
b4173f45 | 1342 | dtr = MoxaPortLineStatus(ch); |
1da177e4 LT |
1343 | if (dtr & 1) |
1344 | flag |= TIOCM_CTS; | |
1345 | if (dtr & 2) | |
1346 | flag |= TIOCM_DSR; | |
1347 | if (dtr & 4) | |
1348 | flag |= TIOCM_CD; | |
a8f5cda0 | 1349 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1350 | return flag; |
1351 | } | |
1352 | ||
1353 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
1354 | unsigned int set, unsigned int clear) | |
1355 | { | |
a8f5cda0 | 1356 | struct moxa_port *ch; |
1da177e4 LT |
1357 | int port; |
1358 | int dtr, rts; | |
1359 | ||
11324edd | 1360 | port = tty->index; |
a8f5cda0 JS |
1361 | mutex_lock(&moxa_openlock); |
1362 | ch = tty->driver_data; | |
1363 | if (!ch) { | |
1364 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1365 | return -EINVAL; |
a8f5cda0 | 1366 | } |
1da177e4 | 1367 | |
b4173f45 | 1368 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1369 | if (set & TIOCM_RTS) |
1370 | rts = 1; | |
1371 | if (set & TIOCM_DTR) | |
1372 | dtr = 1; | |
1373 | if (clear & TIOCM_RTS) | |
1374 | rts = 0; | |
1375 | if (clear & TIOCM_DTR) | |
1376 | dtr = 0; | |
b4173f45 | 1377 | MoxaPortLineCtrl(ch, dtr, rts); |
a8f5cda0 | 1378 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1379 | return 0; |
1380 | } | |
1381 | ||
1da177e4 LT |
1382 | static void moxa_throttle(struct tty_struct *tty) |
1383 | { | |
eaa95a8d | 1384 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1385 | |
1386 | ch->statusflags |= THROTTLE; | |
1387 | } | |
1388 | ||
1389 | static void moxa_unthrottle(struct tty_struct *tty) | |
1390 | { | |
eaa95a8d | 1391 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1392 | |
1393 | ch->statusflags &= ~THROTTLE; | |
1394 | } | |
1395 | ||
1396 | static void moxa_set_termios(struct tty_struct *tty, | |
eaa95a8d | 1397 | struct ktermios *old_termios) |
1da177e4 | 1398 | { |
eaa95a8d | 1399 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1400 | |
1401 | if (ch == NULL) | |
1402 | return; | |
db1acaa6 | 1403 | moxa_set_tty_param(tty, old_termios); |
eaa95a8d | 1404 | if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) |
9de6a51f | 1405 | wake_up_interruptible(&ch->port.open_wait); |
1da177e4 LT |
1406 | } |
1407 | ||
1408 | static void moxa_stop(struct tty_struct *tty) | |
1409 | { | |
eaa95a8d | 1410 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1411 | |
1412 | if (ch == NULL) | |
1413 | return; | |
b4173f45 | 1414 | MoxaPortTxDisable(ch); |
1da177e4 LT |
1415 | ch->statusflags |= TXSTOPPED; |
1416 | } | |
1417 | ||
1418 | ||
1419 | static void moxa_start(struct tty_struct *tty) | |
1420 | { | |
eaa95a8d | 1421 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1422 | |
1423 | if (ch == NULL) | |
1424 | return; | |
1425 | ||
1426 | if (!(ch->statusflags & TXSTOPPED)) | |
1427 | return; | |
1428 | ||
b4173f45 | 1429 | MoxaPortTxEnable(ch); |
1da177e4 LT |
1430 | ch->statusflags &= ~TXSTOPPED; |
1431 | } | |
1432 | ||
1433 | static void moxa_hangup(struct tty_struct *tty) | |
1434 | { | |
a8f5cda0 | 1435 | struct moxa_port *ch; |
1da177e4 | 1436 | |
a8f5cda0 JS |
1437 | mutex_lock(&moxa_openlock); |
1438 | ch = tty->driver_data; | |
1439 | if (ch == NULL) { | |
1440 | mutex_unlock(&moxa_openlock); | |
1441 | return; | |
1442 | } | |
9de6a51f | 1443 | ch->port.count = 0; |
d450b5a0 | 1444 | moxa_close_port(tty); |
a8f5cda0 JS |
1445 | mutex_unlock(&moxa_openlock); |
1446 | ||
9de6a51f | 1447 | wake_up_interruptible(&ch->port.open_wait); |
1da177e4 LT |
1448 | } |
1449 | ||
7bcf97d1 | 1450 | static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) |
1da177e4 | 1451 | { |
d450b5a0 | 1452 | struct tty_struct *tty; |
7bcf97d1 | 1453 | dcd = !!dcd; |
1da177e4 | 1454 | |
d450b5a0 AC |
1455 | if (dcd != p->DCDState) { |
1456 | tty = tty_port_tty_get(&p->port); | |
1457 | if (tty && C_CLOCAL(tty) && !dcd) | |
1458 | tty_hangup(tty); | |
1459 | tty_kref_put(tty); | |
7bcf97d1 JS |
1460 | } |
1461 | p->DCDState = dcd; | |
1462 | } | |
1da177e4 | 1463 | |
7bcf97d1 JS |
1464 | static int moxa_poll_port(struct moxa_port *p, unsigned int handle, |
1465 | u16 __iomem *ip) | |
1466 | { | |
d450b5a0 | 1467 | struct tty_struct *tty = tty_port_tty_get(&p->port); |
7bcf97d1 | 1468 | void __iomem *ofsAddr; |
9de6a51f | 1469 | unsigned int inited = p->port.flags & ASYNC_INITIALIZED; |
7bcf97d1 JS |
1470 | u16 intr; |
1471 | ||
1472 | if (tty) { | |
1473 | if ((p->statusflags & EMPTYWAIT) && | |
1474 | MoxaPortTxQueue(p) == 0) { | |
1475 | p->statusflags &= ~EMPTYWAIT; | |
1476 | tty_wakeup(tty); | |
1477 | } | |
1478 | if ((p->statusflags & LOWWAIT) && !tty->stopped && | |
1479 | MoxaPortTxQueue(p) <= WAKEUP_CHARS) { | |
1480 | p->statusflags &= ~LOWWAIT; | |
1481 | tty_wakeup(tty); | |
1482 | } | |
1483 | ||
1484 | if (inited && !(p->statusflags & THROTTLE) && | |
1485 | MoxaPortRxQueue(p) > 0) { /* RX */ | |
1486 | MoxaPortReadData(p); | |
1487 | tty_schedule_flip(tty); | |
1488 | } | |
1489 | } else { | |
1490 | p->statusflags &= ~EMPTYWAIT; | |
1491 | MoxaPortFlushData(p, 0); /* flush RX */ | |
1da177e4 | 1492 | } |
0bcc4caa | 1493 | |
7bcf97d1 | 1494 | if (!handle) /* nothing else to do */ |
0e0fd7d7 | 1495 | goto put; |
7bcf97d1 JS |
1496 | |
1497 | intr = readw(ip); /* port irq status */ | |
1498 | if (intr == 0) | |
0e0fd7d7 | 1499 | goto put; |
7bcf97d1 JS |
1500 | |
1501 | writew(0, ip); /* ACK port */ | |
1502 | ofsAddr = p->tableAddr; | |
1503 | if (intr & IntrTx) /* disable tx intr */ | |
1504 | writew(readw(ofsAddr + HostStat) & ~WakeupTx, | |
1505 | ofsAddr + HostStat); | |
1506 | ||
1507 | if (!inited) | |
0e0fd7d7 | 1508 | goto put; |
7bcf97d1 JS |
1509 | |
1510 | if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ | |
1511 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1512 | tty_schedule_flip(tty); | |
1513 | } | |
1514 | ||
1515 | if (intr & IntrLine) | |
1516 | moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); | |
0e0fd7d7 JS |
1517 | put: |
1518 | tty_kref_put(tty); | |
7bcf97d1 JS |
1519 | |
1520 | return 0; | |
1521 | } | |
1522 | ||
1523 | static void moxa_poll(unsigned long ignored) | |
1524 | { | |
1525 | struct moxa_board_conf *brd; | |
1526 | u16 __iomem *ip; | |
2a541341 | 1527 | unsigned int card, port, served = 0; |
7bcf97d1 JS |
1528 | |
1529 | spin_lock(&moxa_lock); | |
1da177e4 | 1530 | for (card = 0; card < MAX_BOARDS; card++) { |
7bcf97d1 JS |
1531 | brd = &moxa_boards[card]; |
1532 | if (!brd->ready) | |
1da177e4 | 1533 | continue; |
7bcf97d1 | 1534 | |
2a541341 JS |
1535 | served++; |
1536 | ||
7bcf97d1 JS |
1537 | ip = NULL; |
1538 | if (readb(brd->intPend) == 0xff) | |
1539 | ip = brd->intTable + readb(brd->intNdx); | |
1540 | ||
1541 | for (port = 0; port < brd->numPorts; port++) | |
1542 | moxa_poll_port(&brd->ports[port], !!ip, ip + port); | |
1543 | ||
1544 | if (ip) | |
1545 | writeb(0, brd->intPend); /* ACK */ | |
1546 | ||
1547 | if (moxaLowWaterChk) { | |
1548 | struct moxa_port *p = brd->ports; | |
1549 | for (port = 0; port < brd->numPorts; port++, p++) | |
1550 | if (p->lowChkFlag) { | |
1551 | p->lowChkFlag = 0; | |
1552 | moxa_low_water_check(p->tableAddr); | |
1da177e4 | 1553 | } |
1da177e4 LT |
1554 | } |
1555 | } | |
7bcf97d1 | 1556 | moxaLowWaterChk = 0; |
1da177e4 | 1557 | |
2a541341 JS |
1558 | if (served) |
1559 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
1560 | spin_unlock(&moxa_lock); | |
1da177e4 LT |
1561 | } |
1562 | ||
1563 | /******************************************************************************/ | |
1564 | ||
db1acaa6 | 1565 | static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 1566 | { |
eaa95a8d JS |
1567 | register struct ktermios *ts = tty->termios; |
1568 | struct moxa_port *ch = tty->driver_data; | |
db1acaa6 | 1569 | int rts, cts, txflow, rxflow, xany, baud; |
1da177e4 | 1570 | |
1da177e4 LT |
1571 | rts = cts = txflow = rxflow = xany = 0; |
1572 | if (ts->c_cflag & CRTSCTS) | |
1573 | rts = cts = 1; | |
1574 | if (ts->c_iflag & IXON) | |
1575 | txflow = 1; | |
1576 | if (ts->c_iflag & IXOFF) | |
1577 | rxflow = 1; | |
1578 | if (ts->c_iflag & IXANY) | |
1579 | xany = 1; | |
db1acaa6 AC |
1580 | |
1581 | /* Clear the features we don't support */ | |
1582 | ts->c_cflag &= ~CMSPAR; | |
b4173f45 JS |
1583 | MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); |
1584 | baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); | |
db1acaa6 AC |
1585 | if (baud == -1) |
1586 | baud = tty_termios_baud_rate(old_termios); | |
1587 | /* Not put the baud rate into the termios data */ | |
1588 | tty_encode_baud_rate(tty, baud, baud); | |
1da177e4 LT |
1589 | } |
1590 | ||
6f56b658 | 1591 | static void moxa_setup_empty_event(struct tty_struct *tty) |
1da177e4 | 1592 | { |
8f8ecbad | 1593 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1594 | |
7bcf97d1 | 1595 | spin_lock_bh(&moxa_lock); |
1da177e4 | 1596 | ch->statusflags |= EMPTYWAIT; |
7bcf97d1 | 1597 | spin_unlock_bh(&moxa_lock); |
1da177e4 LT |
1598 | } |
1599 | ||
d450b5a0 | 1600 | static void moxa_shut_down(struct tty_struct *tty) |
1da177e4 | 1601 | { |
d450b5a0 | 1602 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1603 | |
9de6a51f | 1604 | if (!(ch->port.flags & ASYNC_INITIALIZED)) |
1da177e4 LT |
1605 | return; |
1606 | ||
b4173f45 | 1607 | MoxaPortDisable(ch); |
1da177e4 LT |
1608 | |
1609 | /* | |
1610 | * If we're a modem control device and HUPCL is on, drop RTS & DTR. | |
1611 | */ | |
d450b5a0 | 1612 | if (C_HUPCL(tty)) |
b4173f45 | 1613 | MoxaPortLineCtrl(ch, 0, 0); |
1da177e4 | 1614 | |
a8f5cda0 | 1615 | spin_lock_bh(&moxa_lock); |
9de6a51f | 1616 | ch->port.flags &= ~ASYNC_INITIALIZED; |
a8f5cda0 | 1617 | spin_unlock_bh(&moxa_lock); |
1da177e4 LT |
1618 | } |
1619 | ||
1da177e4 LT |
1620 | /***************************************************************************** |
1621 | * Driver level functions: * | |
1da177e4 | 1622 | *****************************************************************************/ |
1da177e4 | 1623 | |
b4173f45 | 1624 | static void MoxaPortFlushData(struct moxa_port *port, int mode) |
1da177e4 LT |
1625 | { |
1626 | void __iomem *ofsAddr; | |
eaa95a8d | 1627 | if (mode < 0 || mode > 2) |
1da177e4 | 1628 | return; |
b4173f45 | 1629 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1630 | moxafunc(ofsAddr, FC_FlushQueue, mode); |
1631 | if (mode != 1) { | |
b4173f45 | 1632 | port->lowChkFlag = 0; |
6f56b658 | 1633 | moxa_low_water_check(ofsAddr); |
1da177e4 LT |
1634 | } |
1635 | } | |
1636 | ||
1da177e4 LT |
1637 | /* |
1638 | * Moxa Port Number Description: | |
1639 | * | |
1640 | * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, | |
1641 | * the port number using in MOXA driver functions will be 0 to 31 for | |
1642 | * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 | |
1643 | * to 127 for fourth. For example, if you setup three MOXA boards, | |
1644 | * first board is C218, second board is C320-16 and third board is | |
1645 | * C320-32. The port number of first board (C218 - 8 ports) is from | |
1646 | * 0 to 7. The port number of second board (C320 - 16 ports) is form | |
1647 | * 32 to 47. The port number of third board (C320 - 32 ports) is from | |
1648 | * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to | |
1649 | * 127 will be invalid. | |
1650 | * | |
1651 | * | |
1652 | * Moxa Functions Description: | |
1653 | * | |
1654 | * Function 1: Driver initialization routine, this routine must be | |
1655 | * called when initialized driver. | |
1656 | * Syntax: | |
1657 | * void MoxaDriverInit(); | |
1658 | * | |
1659 | * | |
1660 | * Function 2: Moxa driver private IOCTL command processing. | |
1661 | * Syntax: | |
1662 | * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); | |
1663 | * | |
1664 | * unsigned int cmd : IOCTL command | |
1665 | * unsigned long arg : IOCTL argument | |
1666 | * int port : port number (0 - 127) | |
1667 | * | |
1668 | * return: 0 (OK) | |
1669 | * -EINVAL | |
1670 | * -ENOIOCTLCMD | |
1671 | * | |
1672 | * | |
1da177e4 LT |
1673 | * Function 6: Enable this port to start Tx/Rx data. |
1674 | * Syntax: | |
1675 | * void MoxaPortEnable(int port); | |
1676 | * int port : port number (0 - 127) | |
1677 | * | |
1678 | * | |
1679 | * Function 7: Disable this port | |
1680 | * Syntax: | |
1681 | * void MoxaPortDisable(int port); | |
1682 | * int port : port number (0 - 127) | |
1683 | * | |
1684 | * | |
1da177e4 LT |
1685 | * Function 10: Setting baud rate of this port. |
1686 | * Syntax: | |
08d01c79 | 1687 | * speed_t MoxaPortSetBaud(int port, speed_t baud); |
1da177e4 LT |
1688 | * int port : port number (0 - 127) |
1689 | * long baud : baud rate (50 - 115200) | |
1690 | * | |
1691 | * return: 0 : this port is invalid or baud < 50 | |
1692 | * 50 - 115200 : the real baud rate set to the port, if | |
1693 | * the argument baud is large than maximun | |
1694 | * available baud rate, the real setting | |
1695 | * baud rate will be the maximun baud rate. | |
1696 | * | |
1697 | * | |
1da177e4 LT |
1698 | * Function 12: Configure the port. |
1699 | * Syntax: | |
606d099c | 1700 | * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); |
1da177e4 | 1701 | * int port : port number (0 - 127) |
606d099c | 1702 | * struct ktermios * termio : termio structure pointer |
c7bce309 | 1703 | * speed_t baud : baud rate |
1da177e4 LT |
1704 | * |
1705 | * return: -1 : this port is invalid or termio == NULL | |
1706 | * 0 : setting O.K. | |
1707 | * | |
1708 | * | |
1709 | * Function 13: Get the DTR/RTS state of this port. | |
1710 | * Syntax: | |
1711 | * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); | |
1712 | * int port : port number (0 - 127) | |
1713 | * int * dtrState : pointer to INT to receive the current DTR | |
1714 | * state. (if NULL, this function will not | |
1715 | * write to this address) | |
1716 | * int * rtsState : pointer to INT to receive the current RTS | |
1717 | * state. (if NULL, this function will not | |
1718 | * write to this address) | |
1719 | * | |
1720 | * return: -1 : this port is invalid | |
1721 | * 0 : O.K. | |
1722 | * | |
1723 | * | |
1724 | * Function 14: Setting the DTR/RTS output state of this port. | |
1725 | * Syntax: | |
1726 | * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); | |
1727 | * int port : port number (0 - 127) | |
1728 | * int dtrState : DTR output state (0: off, 1: on) | |
1729 | * int rtsState : RTS output state (0: off, 1: on) | |
1730 | * | |
1731 | * | |
1732 | * Function 15: Setting the flow control of this port. | |
1733 | * Syntax: | |
1734 | * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, | |
1735 | * int txFlow,int xany); | |
1736 | * int port : port number (0 - 127) | |
1737 | * int rtsFlow : H/W RTS flow control (0: no, 1: yes) | |
1738 | * int ctsFlow : H/W CTS flow control (0: no, 1: yes) | |
1739 | * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) | |
1740 | * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) | |
1741 | * int xany : S/W XANY flow control (0: no, 1: yes) | |
1742 | * | |
1743 | * | |
1744 | * Function 16: Get ths line status of this port | |
1745 | * Syntax: | |
1746 | * int MoxaPortLineStatus(int port); | |
1747 | * int port : port number (0 - 127) | |
1748 | * | |
1749 | * return: Bit 0 - CTS state (0: off, 1: on) | |
1750 | * Bit 1 - DSR state (0: off, 1: on) | |
1751 | * Bit 2 - DCD state (0: off, 1: on) | |
1752 | * | |
1753 | * | |
1da177e4 LT |
1754 | * Function 19: Flush the Rx/Tx buffer data of this port. |
1755 | * Syntax: | |
1756 | * void MoxaPortFlushData(int port, int mode); | |
1757 | * int port : port number (0 - 127) | |
1758 | * int mode | |
1759 | * 0 : flush the Rx buffer | |
1760 | * 1 : flush the Tx buffer | |
1761 | * 2 : flush the Rx and Tx buffer | |
1762 | * | |
1763 | * | |
1764 | * Function 20: Write data. | |
1765 | * Syntax: | |
1766 | * int MoxaPortWriteData(int port, unsigned char * buffer, int length); | |
1767 | * int port : port number (0 - 127) | |
1768 | * unsigned char * buffer : pointer to write data buffer. | |
1769 | * int length : write data length | |
1770 | * | |
1771 | * return: 0 - length : real write data length | |
1772 | * | |
1773 | * | |
1774 | * Function 21: Read data. | |
1775 | * Syntax: | |
33f0f88f | 1776 | * int MoxaPortReadData(int port, struct tty_struct *tty); |
1da177e4 | 1777 | * int port : port number (0 - 127) |
33f0f88f | 1778 | * struct tty_struct *tty : tty for data |
1da177e4 LT |
1779 | * |
1780 | * return: 0 - length : real read data length | |
1781 | * | |
1782 | * | |
1da177e4 LT |
1783 | * Function 24: Get the Tx buffer current queued data bytes |
1784 | * Syntax: | |
1785 | * int MoxaPortTxQueue(int port); | |
1786 | * int port : port number (0 - 127) | |
1787 | * | |
1788 | * return: .. : Tx buffer current queued data bytes | |
1789 | * | |
1790 | * | |
1791 | * Function 25: Get the Tx buffer current free space | |
1792 | * Syntax: | |
1793 | * int MoxaPortTxFree(int port); | |
1794 | * int port : port number (0 - 127) | |
1795 | * | |
1796 | * return: .. : Tx buffer current free space | |
1797 | * | |
1798 | * | |
1799 | * Function 26: Get the Rx buffer current queued data bytes | |
1800 | * Syntax: | |
1801 | * int MoxaPortRxQueue(int port); | |
1802 | * int port : port number (0 - 127) | |
1803 | * | |
1804 | * return: .. : Rx buffer current queued data bytes | |
1805 | * | |
1806 | * | |
1da177e4 LT |
1807 | * Function 28: Disable port data transmission. |
1808 | * Syntax: | |
1809 | * void MoxaPortTxDisable(int port); | |
1810 | * int port : port number (0 - 127) | |
1811 | * | |
1812 | * | |
1813 | * Function 29: Enable port data transmission. | |
1814 | * Syntax: | |
1815 | * void MoxaPortTxEnable(int port); | |
1816 | * int port : port number (0 - 127) | |
1817 | * | |
1818 | * | |
1da177e4 LT |
1819 | * Function 31: Get the received BREAK signal count and reset it. |
1820 | * Syntax: | |
1821 | * int MoxaPortResetBrkCnt(int port); | |
1822 | * int port : port number (0 - 127) | |
1823 | * | |
1824 | * return: 0 - .. : BREAK signal count | |
1825 | * | |
1826 | * | |
1da177e4 | 1827 | */ |
1da177e4 | 1828 | |
b4173f45 | 1829 | static void MoxaPortEnable(struct moxa_port *port) |
1da177e4 LT |
1830 | { |
1831 | void __iomem *ofsAddr; | |
eaa95a8d | 1832 | u16 lowwater = 512; |
1da177e4 | 1833 | |
b4173f45 | 1834 | ofsAddr = port->tableAddr; |
1da177e4 | 1835 | writew(lowwater, ofsAddr + Low_water); |
08d01c79 | 1836 | if (MOXA_IS_320(port->board)) |
1da177e4 | 1837 | moxafunc(ofsAddr, FC_SetBreakIrq, 0); |
eaa95a8d JS |
1838 | else |
1839 | writew(readw(ofsAddr + HostStat) | WakeupBreak, | |
1840 | ofsAddr + HostStat); | |
1da177e4 LT |
1841 | |
1842 | moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); | |
1843 | moxafunc(ofsAddr, FC_FlushQueue, 2); | |
1844 | ||
1845 | moxafunc(ofsAddr, FC_EnableCH, Magic_code); | |
1846 | MoxaPortLineStatus(port); | |
1847 | } | |
1848 | ||
b4173f45 | 1849 | static void MoxaPortDisable(struct moxa_port *port) |
1da177e4 | 1850 | { |
b4173f45 | 1851 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
1852 | |
1853 | moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ | |
1854 | moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); | |
1855 | writew(0, ofsAddr + HostStat); | |
1856 | moxafunc(ofsAddr, FC_DisableCH, Magic_code); | |
1857 | } | |
1858 | ||
08d01c79 | 1859 | static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) |
1da177e4 | 1860 | { |
08d01c79 JS |
1861 | void __iomem *ofsAddr = port->tableAddr; |
1862 | unsigned int clock, val; | |
1863 | speed_t max; | |
1da177e4 | 1864 | |
08d01c79 JS |
1865 | max = MOXA_IS_320(port->board) ? 460800 : 921600; |
1866 | if (baud < 50) | |
eaa95a8d | 1867 | return 0; |
1da177e4 LT |
1868 | if (baud > max) |
1869 | baud = max; | |
08d01c79 | 1870 | clock = 921600; |
1da177e4 LT |
1871 | val = clock / baud; |
1872 | moxafunc(ofsAddr, FC_SetBaud, val); | |
1873 | baud = clock / val; | |
eaa95a8d | 1874 | return baud; |
1da177e4 LT |
1875 | } |
1876 | ||
b4173f45 JS |
1877 | static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, |
1878 | speed_t baud) | |
1da177e4 LT |
1879 | { |
1880 | void __iomem *ofsAddr; | |
1881 | tcflag_t cflag; | |
1da177e4 LT |
1882 | tcflag_t mode = 0; |
1883 | ||
b4173f45 | 1884 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1885 | cflag = termio->c_cflag; /* termio->c_cflag */ |
1886 | ||
1887 | mode = termio->c_cflag & CSIZE; | |
1888 | if (mode == CS5) | |
1889 | mode = MX_CS5; | |
1890 | else if (mode == CS6) | |
1891 | mode = MX_CS6; | |
1892 | else if (mode == CS7) | |
1893 | mode = MX_CS7; | |
1894 | else if (mode == CS8) | |
1895 | mode = MX_CS8; | |
1896 | ||
1897 | if (termio->c_cflag & CSTOPB) { | |
1898 | if (mode == MX_CS5) | |
1899 | mode |= MX_STOP15; | |
1900 | else | |
1901 | mode |= MX_STOP2; | |
1902 | } else | |
1903 | mode |= MX_STOP1; | |
1904 | ||
1905 | if (termio->c_cflag & PARENB) { | |
1906 | if (termio->c_cflag & PARODD) | |
1907 | mode |= MX_PARODD; | |
1908 | else | |
1909 | mode |= MX_PAREVEN; | |
1910 | } else | |
1911 | mode |= MX_PARNONE; | |
1912 | ||
eaa95a8d | 1913 | moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); |
1da177e4 | 1914 | |
08d01c79 JS |
1915 | if (MOXA_IS_320(port->board) && baud >= 921600) |
1916 | return -1; | |
1917 | ||
db1acaa6 | 1918 | baud = MoxaPortSetBaud(port, baud); |
1da177e4 LT |
1919 | |
1920 | if (termio->c_iflag & (IXON | IXOFF | IXANY)) { | |
1921 | writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); | |
1922 | writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); | |
1923 | writeb(FC_SetXonXoff, ofsAddr + FuncCode); | |
6f56b658 | 1924 | moxa_wait_finish(ofsAddr); |
1da177e4 LT |
1925 | |
1926 | } | |
eaa95a8d | 1927 | return baud; |
1da177e4 LT |
1928 | } |
1929 | ||
b4173f45 JS |
1930 | static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, |
1931 | int *rtsState) | |
1da177e4 | 1932 | { |
b4173f45 JS |
1933 | if (dtrState) |
1934 | *dtrState = !!(port->lineCtrl & DTR_ON); | |
1935 | if (rtsState) | |
1936 | *rtsState = !!(port->lineCtrl & RTS_ON); | |
1937 | ||
eaa95a8d | 1938 | return 0; |
1da177e4 LT |
1939 | } |
1940 | ||
b4173f45 | 1941 | static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) |
1da177e4 | 1942 | { |
eaa95a8d | 1943 | u8 mode = 0; |
1da177e4 | 1944 | |
1da177e4 LT |
1945 | if (dtr) |
1946 | mode |= DTR_ON; | |
1947 | if (rts) | |
1948 | mode |= RTS_ON; | |
b4173f45 JS |
1949 | port->lineCtrl = mode; |
1950 | moxafunc(port->tableAddr, FC_LineControl, mode); | |
1da177e4 LT |
1951 | } |
1952 | ||
b4173f45 JS |
1953 | static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, |
1954 | int txflow, int rxflow, int txany) | |
1da177e4 | 1955 | { |
b4173f45 | 1956 | int mode = 0; |
1da177e4 | 1957 | |
1da177e4 LT |
1958 | if (rts) |
1959 | mode |= RTS_FlowCtl; | |
1960 | if (cts) | |
1961 | mode |= CTS_FlowCtl; | |
1962 | if (txflow) | |
1963 | mode |= Tx_FlowCtl; | |
1964 | if (rxflow) | |
1965 | mode |= Rx_FlowCtl; | |
1966 | if (txany) | |
1967 | mode |= IXM_IXANY; | |
b4173f45 | 1968 | moxafunc(port->tableAddr, FC_SetFlowCtl, mode); |
1da177e4 LT |
1969 | } |
1970 | ||
b4173f45 | 1971 | static int MoxaPortLineStatus(struct moxa_port *port) |
1da177e4 LT |
1972 | { |
1973 | void __iomem *ofsAddr; | |
1974 | int val; | |
1975 | ||
b4173f45 | 1976 | ofsAddr = port->tableAddr; |
08d01c79 | 1977 | if (MOXA_IS_320(port->board)) { |
1da177e4 LT |
1978 | moxafunc(ofsAddr, FC_LineStatus, 0); |
1979 | val = readw(ofsAddr + FuncArg); | |
1980 | } else { | |
1981 | val = readw(ofsAddr + FlagStat) >> 4; | |
1982 | } | |
1983 | val &= 0x0B; | |
7bcf97d1 | 1984 | if (val & 8) |
1da177e4 | 1985 | val |= 4; |
a8f5cda0 | 1986 | spin_lock_bh(&moxa_lock); |
7bcf97d1 | 1987 | moxa_new_dcdstate(port, val & 8); |
a8f5cda0 | 1988 | spin_unlock_bh(&moxa_lock); |
1da177e4 | 1989 | val &= 7; |
7bcf97d1 | 1990 | return val; |
1da177e4 LT |
1991 | } |
1992 | ||
d450b5a0 | 1993 | static int MoxaPortWriteData(struct tty_struct *tty, |
2108eba5 | 1994 | const unsigned char *buffer, int len) |
1da177e4 | 1995 | { |
d450b5a0 | 1996 | struct moxa_port *port = tty->driver_data; |
1da177e4 | 1997 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
1998 | unsigned int c, total; |
1999 | u16 head, tail, tx_mask, spage, epage; | |
2000 | u16 pageno, pageofs, bufhead; | |
1da177e4 | 2001 | |
b4173f45 JS |
2002 | ofsAddr = port->tableAddr; |
2003 | baseAddr = port->board->basemem; | |
1da177e4 LT |
2004 | tx_mask = readw(ofsAddr + TX_mask); |
2005 | spage = readw(ofsAddr + Page_txb); | |
2006 | epage = readw(ofsAddr + EndPage_txb); | |
2007 | tail = readw(ofsAddr + TXwptr); | |
2008 | head = readw(ofsAddr + TXrptr); | |
2108eba5 | 2009 | c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); |
1da177e4 LT |
2010 | if (c > len) |
2011 | c = len; | |
9de6a51f | 2012 | moxaLog.txcnt[port->port.tty->index] += c; |
1da177e4 LT |
2013 | total = c; |
2014 | if (spage == epage) { | |
2015 | bufhead = readw(ofsAddr + Ofs_txb); | |
2016 | writew(spage, baseAddr + Control_reg); | |
2017 | while (c > 0) { | |
2018 | if (head > tail) | |
2019 | len = head - tail - 1; | |
2020 | else | |
2021 | len = tx_mask + 1 - tail; | |
2022 | len = (c > len) ? len : c; | |
2023 | ofs = baseAddr + DynPage_addr + bufhead + tail; | |
2108eba5 JS |
2024 | memcpy_toio(ofs, buffer, len); |
2025 | buffer += len; | |
1da177e4 LT |
2026 | tail = (tail + len) & tx_mask; |
2027 | c -= len; | |
2028 | } | |
1da177e4 | 2029 | } else { |
1da177e4 LT |
2030 | pageno = spage + (tail >> 13); |
2031 | pageofs = tail & Page_mask; | |
2108eba5 JS |
2032 | while (c > 0) { |
2033 | len = Page_size - pageofs; | |
2034 | if (len > c) | |
2035 | len = c; | |
1da177e4 LT |
2036 | writeb(pageno, baseAddr + Control_reg); |
2037 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
2038 | memcpy_toio(ofs, buffer, len); |
2039 | buffer += len; | |
1da177e4 LT |
2040 | if (++pageno == epage) |
2041 | pageno = spage; | |
2042 | pageofs = 0; | |
2108eba5 JS |
2043 | c -= len; |
2044 | } | |
2045 | tail = (tail + total) & tx_mask; | |
1da177e4 | 2046 | } |
2108eba5 | 2047 | writew(tail, ofsAddr + TXwptr); |
1da177e4 | 2048 | writeb(1, ofsAddr + CD180TXirq); /* start to send */ |
2108eba5 | 2049 | return total; |
1da177e4 LT |
2050 | } |
2051 | ||
7bcf97d1 | 2052 | static int MoxaPortReadData(struct moxa_port *port) |
1da177e4 | 2053 | { |
9de6a51f | 2054 | struct tty_struct *tty = port->port.tty; |
2108eba5 | 2055 | unsigned char *dst; |
1da177e4 | 2056 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
2057 | unsigned int count, len, total; |
2058 | u16 tail, rx_mask, spage, epage; | |
2059 | u16 pageno, pageofs, bufhead, head; | |
1da177e4 | 2060 | |
b4173f45 JS |
2061 | ofsAddr = port->tableAddr; |
2062 | baseAddr = port->board->basemem; | |
1da177e4 LT |
2063 | head = readw(ofsAddr + RXrptr); |
2064 | tail = readw(ofsAddr + RXwptr); | |
2065 | rx_mask = readw(ofsAddr + RX_mask); | |
2066 | spage = readw(ofsAddr + Page_rxb); | |
2067 | epage = readw(ofsAddr + EndPage_rxb); | |
2108eba5 | 2068 | count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); |
1da177e4 | 2069 | if (count == 0) |
33f0f88f | 2070 | return 0; |
1da177e4 | 2071 | |
33f0f88f | 2072 | total = count; |
7bcf97d1 | 2073 | moxaLog.rxcnt[tty->index] += total; |
1da177e4 LT |
2074 | if (spage == epage) { |
2075 | bufhead = readw(ofsAddr + Ofs_rxb); | |
2076 | writew(spage, baseAddr + Control_reg); | |
2077 | while (count > 0) { | |
1da177e4 | 2078 | ofs = baseAddr + DynPage_addr + bufhead + head; |
2108eba5 JS |
2079 | len = (tail >= head) ? (tail - head) : |
2080 | (rx_mask + 1 - head); | |
2081 | len = tty_prepare_flip_string(tty, &dst, | |
2082 | min(len, count)); | |
2083 | memcpy_fromio(dst, ofs, len); | |
1da177e4 LT |
2084 | head = (head + len) & rx_mask; |
2085 | count -= len; | |
2086 | } | |
1da177e4 | 2087 | } else { |
1da177e4 LT |
2088 | pageno = spage + (head >> 13); |
2089 | pageofs = head & Page_mask; | |
2108eba5 | 2090 | while (count > 0) { |
1da177e4 LT |
2091 | writew(pageno, baseAddr + Control_reg); |
2092 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
2093 | len = tty_prepare_flip_string(tty, &dst, |
2094 | min(Page_size - pageofs, count)); | |
2095 | memcpy_fromio(dst, ofs, len); | |
2096 | ||
2097 | count -= len; | |
2098 | pageofs = (pageofs + len) & Page_mask; | |
2099 | if (pageofs == 0 && ++pageno == epage) | |
1da177e4 | 2100 | pageno = spage; |
2108eba5 JS |
2101 | } |
2102 | head = (head + total) & rx_mask; | |
1da177e4 | 2103 | } |
2108eba5 JS |
2104 | writew(head, ofsAddr + RXrptr); |
2105 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
1da177e4 | 2106 | moxaLowWaterChk = 1; |
b4173f45 | 2107 | port->lowChkFlag = 1; |
1da177e4 | 2108 | } |
2108eba5 | 2109 | return total; |
1da177e4 LT |
2110 | } |
2111 | ||
2112 | ||
b4173f45 | 2113 | static int MoxaPortTxQueue(struct moxa_port *port) |
1da177e4 | 2114 | { |
b4173f45 | 2115 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2116 | u16 rptr, wptr, mask; |
1da177e4 | 2117 | |
1da177e4 LT |
2118 | rptr = readw(ofsAddr + TXrptr); |
2119 | wptr = readw(ofsAddr + TXwptr); | |
2120 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2121 | return (wptr - rptr) & mask; |
1da177e4 LT |
2122 | } |
2123 | ||
b4173f45 | 2124 | static int MoxaPortTxFree(struct moxa_port *port) |
1da177e4 | 2125 | { |
b4173f45 | 2126 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2127 | u16 rptr, wptr, mask; |
1da177e4 | 2128 | |
1da177e4 LT |
2129 | rptr = readw(ofsAddr + TXrptr); |
2130 | wptr = readw(ofsAddr + TXwptr); | |
2131 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2132 | return mask - ((wptr - rptr) & mask); |
1da177e4 LT |
2133 | } |
2134 | ||
b4173f45 | 2135 | static int MoxaPortRxQueue(struct moxa_port *port) |
1da177e4 | 2136 | { |
b4173f45 | 2137 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2138 | u16 rptr, wptr, mask; |
1da177e4 | 2139 | |
1da177e4 LT |
2140 | rptr = readw(ofsAddr + RXrptr); |
2141 | wptr = readw(ofsAddr + RXwptr); | |
2142 | mask = readw(ofsAddr + RX_mask); | |
2108eba5 | 2143 | return (wptr - rptr) & mask; |
1da177e4 LT |
2144 | } |
2145 | ||
b4173f45 | 2146 | static void MoxaPortTxDisable(struct moxa_port *port) |
1da177e4 | 2147 | { |
b4173f45 | 2148 | moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); |
1da177e4 LT |
2149 | } |
2150 | ||
b4173f45 | 2151 | static void MoxaPortTxEnable(struct moxa_port *port) |
1da177e4 | 2152 | { |
b4173f45 | 2153 | moxafunc(port->tableAddr, FC_SetXonState, Magic_code); |
1da177e4 LT |
2154 | } |
2155 | ||
8f8ecbad | 2156 | static int moxa_get_serial_info(struct moxa_port *info, |
eaa95a8d | 2157 | struct serial_struct __user *retinfo) |
1da177e4 | 2158 | { |
eaa95a8d JS |
2159 | struct serial_struct tmp = { |
2160 | .type = info->type, | |
9de6a51f AC |
2161 | .line = info->port.tty->index, |
2162 | .flags = info->port.flags, | |
eaa95a8d | 2163 | .baud_base = 921600, |
44b7d1b3 | 2164 | .close_delay = info->port.close_delay |
eaa95a8d JS |
2165 | }; |
2166 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; | |
1da177e4 LT |
2167 | } |
2168 | ||
2169 | ||
8f8ecbad | 2170 | static int moxa_set_serial_info(struct moxa_port *info, |
eaa95a8d | 2171 | struct serial_struct __user *new_info) |
1da177e4 LT |
2172 | { |
2173 | struct serial_struct new_serial; | |
2174 | ||
eaa95a8d | 2175 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
1da177e4 LT |
2176 | return -EFAULT; |
2177 | ||
eaa95a8d JS |
2178 | if (new_serial.irq != 0 || new_serial.port != 0 || |
2179 | new_serial.custom_divisor != 0 || | |
2180 | new_serial.baud_base != 921600) | |
2181 | return -EPERM; | |
1da177e4 LT |
2182 | |
2183 | if (!capable(CAP_SYS_ADMIN)) { | |
2184 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
9de6a51f | 2185 | (info->port.flags & ~ASYNC_USR_MASK))) |
eaa95a8d JS |
2186 | return -EPERM; |
2187 | } else | |
44b7d1b3 | 2188 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
1da177e4 LT |
2189 | |
2190 | new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); | |
9de6a51f | 2191 | new_serial.flags |= (info->port.flags & ASYNC_FLAGS); |
1da177e4 | 2192 | |
eaa95a8d | 2193 | MoxaSetFifo(info, new_serial.type == PORT_16550A); |
1da177e4 LT |
2194 | |
2195 | info->type = new_serial.type; | |
eaa95a8d | 2196 | return 0; |
1da177e4 LT |
2197 | } |
2198 | ||
2199 | ||
2200 | ||
2201 | /***************************************************************************** | |
2202 | * Static local functions: * | |
2203 | *****************************************************************************/ | |
1da177e4 | 2204 | |
b4173f45 | 2205 | static void MoxaSetFifo(struct moxa_port *port, int enable) |
1da177e4 | 2206 | { |
b4173f45 | 2207 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
2208 | |
2209 | if (!enable) { | |
2210 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); | |
2211 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); | |
2212 | } else { | |
2213 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); | |
2214 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); | |
2215 | } | |
2216 | } |