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 | 153 | /* statusflags */ |
a808ac0c AC |
154 | #define TXSTOPPED 1 |
155 | #define LOWWAIT 2 | |
156 | #define EMPTYWAIT 3 | |
1da177e4 | 157 | |
1da177e4 LT |
158 | #define SERIAL_DO_RESTART |
159 | ||
1da177e4 LT |
160 | #define WAKEUP_CHARS 256 |
161 | ||
1da177e4 | 162 | static int ttymajor = MOXAMAJOR; |
74d7d97b JS |
163 | static struct mon_str moxaLog; |
164 | static unsigned int moxaFuncTout = HZ / 2; | |
7bcf97d1 | 165 | static unsigned int moxaLowWaterChk; |
a8f5cda0 | 166 | static DEFINE_MUTEX(moxa_openlock); |
1da177e4 LT |
167 | /* Variables for insmod */ |
168 | #ifdef MODULE | |
d353eca4 JS |
169 | static unsigned long baseaddr[MAX_BOARDS]; |
170 | static unsigned int type[MAX_BOARDS]; | |
171 | static unsigned int numports[MAX_BOARDS]; | |
1da177e4 LT |
172 | #endif |
173 | ||
174 | MODULE_AUTHOR("William Chen"); | |
175 | MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); | |
176 | MODULE_LICENSE("GPL"); | |
177 | #ifdef MODULE | |
d353eca4 JS |
178 | module_param_array(type, uint, NULL, 0); |
179 | MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); | |
180 | module_param_array(baseaddr, ulong, NULL, 0); | |
181 | MODULE_PARM_DESC(baseaddr, "base address"); | |
182 | module_param_array(numports, uint, NULL, 0); | |
183 | MODULE_PARM_DESC(numports, "numports (ignored for C218)"); | |
1da177e4 LT |
184 | #endif |
185 | module_param(ttymajor, int, 0); | |
1da177e4 | 186 | |
1da177e4 LT |
187 | /* |
188 | * static functions: | |
189 | */ | |
1da177e4 LT |
190 | static int moxa_open(struct tty_struct *, struct file *); |
191 | static void moxa_close(struct tty_struct *, struct file *); | |
192 | static int moxa_write(struct tty_struct *, const unsigned char *, int); | |
193 | static int moxa_write_room(struct tty_struct *); | |
194 | static void moxa_flush_buffer(struct tty_struct *); | |
195 | static int moxa_chars_in_buffer(struct tty_struct *); | |
606d099c | 196 | static void moxa_set_termios(struct tty_struct *, struct ktermios *); |
1da177e4 LT |
197 | static void moxa_stop(struct tty_struct *); |
198 | static void moxa_start(struct tty_struct *); | |
199 | static void moxa_hangup(struct tty_struct *); | |
200 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file); | |
201 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
202 | unsigned int set, unsigned int clear); | |
203 | static void moxa_poll(unsigned long); | |
db1acaa6 | 204 | static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); |
6f56b658 | 205 | static void moxa_setup_empty_event(struct tty_struct *); |
f176178b | 206 | static void moxa_shutdown(struct tty_port *); |
31f35939 | 207 | static int moxa_carrier_raised(struct tty_port *); |
f176178b | 208 | static void moxa_dtr_rts(struct tty_port *, int); |
1da177e4 LT |
209 | /* |
210 | * moxa board interface functions: | |
211 | */ | |
b4173f45 JS |
212 | static void MoxaPortEnable(struct moxa_port *); |
213 | static void MoxaPortDisable(struct moxa_port *); | |
214 | static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); | |
215 | static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); | |
216 | static void MoxaPortLineCtrl(struct moxa_port *, int, int); | |
217 | static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); | |
218 | static int MoxaPortLineStatus(struct moxa_port *); | |
b4173f45 | 219 | static void MoxaPortFlushData(struct moxa_port *, int); |
d450b5a0 | 220 | static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int); |
7bcf97d1 | 221 | static int MoxaPortReadData(struct moxa_port *); |
b4173f45 JS |
222 | static int MoxaPortTxQueue(struct moxa_port *); |
223 | static int MoxaPortRxQueue(struct moxa_port *); | |
224 | static int MoxaPortTxFree(struct moxa_port *); | |
225 | static void MoxaPortTxDisable(struct moxa_port *); | |
226 | static void MoxaPortTxEnable(struct moxa_port *); | |
8f8ecbad JS |
227 | static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); |
228 | static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); | |
b4173f45 | 229 | static void MoxaSetFifo(struct moxa_port *port, int enable); |
1da177e4 | 230 | |
74d7d97b JS |
231 | /* |
232 | * I/O functions | |
233 | */ | |
234 | ||
a808ac0c AC |
235 | static DEFINE_SPINLOCK(moxafunc_lock); |
236 | ||
74d7d97b JS |
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 | 249 | { |
f5c5a36d AC |
250 | unsigned long flags; |
251 | spin_lock_irqsave(&moxafunc_lock, flags); | |
74d7d97b JS |
252 | writew(arg, ofsAddr + FuncArg); |
253 | writew(cmd, ofsAddr + FuncCode); | |
254 | moxa_wait_finish(ofsAddr); | |
f5c5a36d AC |
255 | spin_unlock_irqrestore(&moxafunc_lock, flags); |
256 | } | |
257 | ||
258 | static int moxafuncret(void __iomem *ofsAddr, u16 cmd, u16 arg) | |
259 | { | |
260 | unsigned long flags; | |
261 | u16 ret; | |
262 | spin_lock_irqsave(&moxafunc_lock, flags); | |
263 | writew(arg, ofsAddr + FuncArg); | |
264 | writew(cmd, ofsAddr + FuncCode); | |
265 | moxa_wait_finish(ofsAddr); | |
266 | ret = readw(ofsAddr + FuncArg); | |
267 | spin_unlock_irqrestore(&moxafunc_lock, flags); | |
268 | return ret; | |
74d7d97b JS |
269 | } |
270 | ||
7bcf97d1 JS |
271 | static void moxa_low_water_check(void __iomem *ofsAddr) |
272 | { | |
273 | u16 rptr, wptr, mask, len; | |
274 | ||
275 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
276 | rptr = readw(ofsAddr + RXrptr); | |
277 | wptr = readw(ofsAddr + RXwptr); | |
278 | mask = readw(ofsAddr + RX_mask); | |
279 | len = (wptr - rptr) & mask; | |
280 | if (len <= Low_water) | |
281 | moxafunc(ofsAddr, FC_SendXon, 0); | |
282 | } | |
283 | } | |
284 | ||
74d7d97b JS |
285 | /* |
286 | * TTY operations | |
287 | */ | |
288 | ||
289 | static int moxa_ioctl(struct tty_struct *tty, struct file *file, | |
290 | unsigned int cmd, unsigned long arg) | |
291 | { | |
292 | struct moxa_port *ch = tty->driver_data; | |
293 | void __user *argp = (void __user *)arg; | |
a8f5cda0 | 294 | int status, ret = 0; |
74d7d97b JS |
295 | |
296 | if (tty->index == MAX_PORTS) { | |
297 | if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && | |
298 | cmd != MOXA_GETMSTATUS) | |
299 | return -EINVAL; | |
300 | } else if (!ch) | |
301 | return -ENODEV; | |
302 | ||
303 | switch (cmd) { | |
304 | case MOXA_GETDATACOUNT: | |
305 | moxaLog.tick = jiffies; | |
a8f5cda0 JS |
306 | if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) |
307 | ret = -EFAULT; | |
308 | break; | |
74d7d97b JS |
309 | case MOXA_FLUSH_QUEUE: |
310 | MoxaPortFlushData(ch, arg); | |
a8f5cda0 | 311 | break; |
74d7d97b JS |
312 | case MOXA_GET_IOQUEUE: { |
313 | struct moxaq_str __user *argm = argp; | |
314 | struct moxaq_str tmp; | |
315 | struct moxa_port *p; | |
316 | unsigned int i, j; | |
317 | ||
a8f5cda0 | 318 | mutex_lock(&moxa_openlock); |
74d7d97b JS |
319 | for (i = 0; i < MAX_BOARDS; i++) { |
320 | p = moxa_boards[i].ports; | |
321 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
322 | memset(&tmp, 0, sizeof(tmp)); | |
323 | if (moxa_boards[i].ready) { | |
324 | tmp.inq = MoxaPortRxQueue(p); | |
325 | tmp.outq = MoxaPortTxQueue(p); | |
326 | } | |
a8f5cda0 JS |
327 | if (copy_to_user(argm, &tmp, sizeof(tmp))) { |
328 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 329 | return -EFAULT; |
a8f5cda0 | 330 | } |
74d7d97b JS |
331 | } |
332 | } | |
a8f5cda0 JS |
333 | mutex_unlock(&moxa_openlock); |
334 | break; | |
74d7d97b JS |
335 | } case MOXA_GET_OQUEUE: |
336 | status = MoxaPortTxQueue(ch); | |
a8f5cda0 JS |
337 | ret = put_user(status, (unsigned long __user *)argp); |
338 | break; | |
74d7d97b JS |
339 | case MOXA_GET_IQUEUE: |
340 | status = MoxaPortRxQueue(ch); | |
a8f5cda0 JS |
341 | ret = put_user(status, (unsigned long __user *)argp); |
342 | break; | |
74d7d97b JS |
343 | case MOXA_GETMSTATUS: { |
344 | struct mxser_mstatus __user *argm = argp; | |
345 | struct mxser_mstatus tmp; | |
346 | struct moxa_port *p; | |
347 | unsigned int i, j; | |
348 | ||
a8f5cda0 | 349 | mutex_lock(&moxa_openlock); |
74d7d97b JS |
350 | for (i = 0; i < MAX_BOARDS; i++) { |
351 | p = moxa_boards[i].ports; | |
352 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
d450b5a0 | 353 | struct tty_struct *ttyp; |
74d7d97b JS |
354 | memset(&tmp, 0, sizeof(tmp)); |
355 | if (!moxa_boards[i].ready) | |
356 | goto copy; | |
357 | ||
358 | status = MoxaPortLineStatus(p); | |
359 | if (status & 1) | |
360 | tmp.cts = 1; | |
361 | if (status & 2) | |
362 | tmp.dsr = 1; | |
363 | if (status & 4) | |
364 | tmp.dcd = 1; | |
365 | ||
d450b5a0 AC |
366 | ttyp = tty_port_tty_get(&p->port); |
367 | if (!ttyp || !ttyp->termios) | |
74d7d97b JS |
368 | tmp.cflag = p->cflag; |
369 | else | |
d450b5a0 AC |
370 | tmp.cflag = ttyp->termios->c_cflag; |
371 | tty_kref_put(tty); | |
74d7d97b | 372 | copy: |
a8f5cda0 JS |
373 | if (copy_to_user(argm, &tmp, sizeof(tmp))) { |
374 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 375 | return -EFAULT; |
a8f5cda0 | 376 | } |
74d7d97b JS |
377 | } |
378 | } | |
a8f5cda0 JS |
379 | mutex_unlock(&moxa_openlock); |
380 | break; | |
74d7d97b JS |
381 | } |
382 | case TIOCGSERIAL: | |
a808ac0c | 383 | mutex_lock(&ch->port.mutex); |
a8f5cda0 | 384 | ret = moxa_get_serial_info(ch, argp); |
a808ac0c | 385 | mutex_unlock(&ch->port.mutex); |
a8f5cda0 | 386 | break; |
74d7d97b | 387 | case TIOCSSERIAL: |
a808ac0c | 388 | mutex_lock(&ch->port.mutex); |
a8f5cda0 | 389 | ret = moxa_set_serial_info(ch, argp); |
a808ac0c | 390 | mutex_unlock(&ch->port.mutex); |
a8f5cda0 JS |
391 | break; |
392 | default: | |
393 | ret = -ENOIOCTLCMD; | |
74d7d97b | 394 | } |
a8f5cda0 | 395 | return ret; |
74d7d97b JS |
396 | } |
397 | ||
9e98966c | 398 | static int moxa_break_ctl(struct tty_struct *tty, int state) |
74d7d97b JS |
399 | { |
400 | struct moxa_port *port = tty->driver_data; | |
401 | ||
402 | moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, | |
403 | Magic_code); | |
9e98966c | 404 | return 0; |
74d7d97b JS |
405 | } |
406 | ||
b68e31d0 | 407 | static const struct tty_operations moxa_ops = { |
1da177e4 LT |
408 | .open = moxa_open, |
409 | .close = moxa_close, | |
410 | .write = moxa_write, | |
411 | .write_room = moxa_write_room, | |
412 | .flush_buffer = moxa_flush_buffer, | |
413 | .chars_in_buffer = moxa_chars_in_buffer, | |
1da177e4 | 414 | .ioctl = moxa_ioctl, |
1da177e4 LT |
415 | .set_termios = moxa_set_termios, |
416 | .stop = moxa_stop, | |
417 | .start = moxa_start, | |
418 | .hangup = moxa_hangup, | |
74d7d97b | 419 | .break_ctl = moxa_break_ctl, |
1da177e4 LT |
420 | .tiocmget = moxa_tiocmget, |
421 | .tiocmset = moxa_tiocmset, | |
422 | }; | |
423 | ||
31f35939 AC |
424 | static const struct tty_port_operations moxa_port_ops = { |
425 | .carrier_raised = moxa_carrier_raised, | |
f176178b AC |
426 | .dtr_rts = moxa_dtr_rts, |
427 | .shutdown = moxa_shutdown, | |
31f35939 AC |
428 | }; |
429 | ||
aa7e5221 | 430 | static struct tty_driver *moxaDriver; |
aa7e5221 | 431 | static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); |
34af946a | 432 | static DEFINE_SPINLOCK(moxa_lock); |
33f0f88f | 433 | |
74d7d97b JS |
434 | /* |
435 | * HW init | |
436 | */ | |
437 | ||
03718234 JS |
438 | static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) |
439 | { | |
440 | switch (brd->boardType) { | |
441 | case MOXA_BOARD_C218_ISA: | |
442 | case MOXA_BOARD_C218_PCI: | |
443 | if (model != 1) | |
444 | goto err; | |
445 | break; | |
446 | case MOXA_BOARD_CP204J: | |
447 | if (model != 3) | |
448 | goto err; | |
449 | break; | |
450 | default: | |
451 | if (model != 2) | |
452 | goto err; | |
453 | break; | |
454 | } | |
455 | return 0; | |
456 | err: | |
457 | return -EINVAL; | |
458 | } | |
459 | ||
460 | static int moxa_check_fw(const void *ptr) | |
461 | { | |
462 | const __le16 *lptr = ptr; | |
463 | ||
464 | if (*lptr != cpu_to_le16(0x7980)) | |
465 | return -EINVAL; | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, | |
471 | size_t len) | |
472 | { | |
473 | void __iomem *baseAddr = brd->basemem; | |
474 | u16 tmp; | |
475 | ||
476 | writeb(HW_reset, baseAddr + Control_reg); /* reset */ | |
477 | msleep(10); | |
478 | memset_io(baseAddr, 0, 4096); | |
479 | memcpy_toio(baseAddr, buf, len); /* download BIOS */ | |
480 | writeb(0, baseAddr + Control_reg); /* restart */ | |
481 | ||
482 | msleep(2000); | |
483 | ||
484 | switch (brd->boardType) { | |
485 | case MOXA_BOARD_C218_ISA: | |
486 | case MOXA_BOARD_C218_PCI: | |
487 | tmp = readw(baseAddr + C218_key); | |
488 | if (tmp != C218_KeyCode) | |
489 | goto err; | |
490 | break; | |
491 | case MOXA_BOARD_CP204J: | |
492 | tmp = readw(baseAddr + C218_key); | |
493 | if (tmp != CP204J_KeyCode) | |
494 | goto err; | |
495 | break; | |
496 | default: | |
497 | tmp = readw(baseAddr + C320_key); | |
498 | if (tmp != C320_KeyCode) | |
499 | goto err; | |
500 | tmp = readw(baseAddr + C320_status); | |
501 | if (tmp != STS_init) { | |
eaa95a8d | 502 | printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " |
03718234 JS |
503 | "module not found\n"); |
504 | return -EIO; | |
505 | } | |
506 | break; | |
507 | } | |
508 | ||
509 | return 0; | |
510 | err: | |
eaa95a8d | 511 | printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); |
03718234 JS |
512 | return -EIO; |
513 | } | |
514 | ||
515 | static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, | |
516 | size_t len) | |
517 | { | |
518 | void __iomem *baseAddr = brd->basemem; | |
519 | ||
520 | if (len < 7168) { | |
eaa95a8d | 521 | printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); |
03718234 JS |
522 | return -EINVAL; |
523 | } | |
524 | ||
525 | writew(len - 7168 - 2, baseAddr + C320bapi_len); | |
526 | writeb(1, baseAddr + Control_reg); /* Select Page 1 */ | |
527 | memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); | |
528 | writeb(2, baseAddr + Control_reg); /* Select Page 2 */ | |
529 | memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
5292bcd3 | 534 | static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, |
03718234 JS |
535 | size_t len) |
536 | { | |
537 | void __iomem *baseAddr = brd->basemem; | |
b46f69cd | 538 | const __le16 *uptr = ptr; |
03718234 | 539 | size_t wlen, len2, j; |
5292bcd3 | 540 | unsigned long key, loadbuf, loadlen, checksum, checksum_ok; |
08d01c79 | 541 | unsigned int i, retry; |
03718234 JS |
542 | u16 usum, keycode; |
543 | ||
5292bcd3 JS |
544 | keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : |
545 | C218_KeyCode; | |
03718234 | 546 | |
5292bcd3 JS |
547 | switch (brd->boardType) { |
548 | case MOXA_BOARD_CP204J: | |
549 | case MOXA_BOARD_C218_ISA: | |
550 | case MOXA_BOARD_C218_PCI: | |
551 | key = C218_key; | |
552 | loadbuf = C218_LoadBuf; | |
553 | loadlen = C218DLoad_len; | |
554 | checksum = C218check_sum; | |
555 | checksum_ok = C218chksum_ok; | |
556 | break; | |
557 | default: | |
558 | key = C320_key; | |
559 | keycode = C320_KeyCode; | |
560 | loadbuf = C320_LoadBuf; | |
561 | loadlen = C320DLoad_len; | |
562 | checksum = C320check_sum; | |
563 | checksum_ok = C320chksum_ok; | |
564 | break; | |
03718234 | 565 | } |
03718234 JS |
566 | |
567 | usum = 0; | |
568 | wlen = len >> 1; | |
569 | for (i = 0; i < wlen; i++) | |
570 | usum += le16_to_cpu(uptr[i]); | |
571 | retry = 0; | |
572 | do { | |
573 | wlen = len >> 1; | |
574 | j = 0; | |
575 | while (wlen) { | |
576 | len2 = (wlen > 2048) ? 2048 : wlen; | |
577 | wlen -= len2; | |
5292bcd3 | 578 | memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); |
03718234 | 579 | j += len2 << 1; |
5292bcd3 JS |
580 | |
581 | writew(len2, baseAddr + loadlen); | |
582 | writew(0, baseAddr + key); | |
583 | for (i = 0; i < 100; i++) { | |
584 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
585 | break; |
586 | msleep(10); | |
587 | } | |
5292bcd3 | 588 | if (readw(baseAddr + key) != keycode) |
03718234 JS |
589 | return -EIO; |
590 | } | |
5292bcd3 JS |
591 | writew(0, baseAddr + loadlen); |
592 | writew(usum, baseAddr + checksum); | |
593 | writew(0, baseAddr + key); | |
594 | for (i = 0; i < 100; i++) { | |
595 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
596 | break; |
597 | msleep(10); | |
598 | } | |
599 | retry++; | |
5292bcd3 JS |
600 | } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); |
601 | if (readb(baseAddr + checksum_ok) != 1) | |
03718234 JS |
602 | return -EIO; |
603 | ||
5292bcd3 | 604 | writew(0, baseAddr + key); |
03718234 JS |
605 | for (i = 0; i < 600; i++) { |
606 | if (readw(baseAddr + Magic_no) == Magic_code) | |
607 | break; | |
608 | msleep(10); | |
609 | } | |
610 | if (readw(baseAddr + Magic_no) != Magic_code) | |
611 | return -EIO; | |
612 | ||
08d01c79 | 613 | if (MOXA_IS_320(brd)) { |
5292bcd3 JS |
614 | if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ |
615 | writew(0x3800, baseAddr + TMS320_PORT1); | |
616 | writew(0x3900, baseAddr + TMS320_PORT2); | |
617 | writew(28499, baseAddr + TMS320_CLOCK); | |
618 | } else { | |
619 | writew(0x3200, baseAddr + TMS320_PORT1); | |
620 | writew(0x3400, baseAddr + TMS320_PORT2); | |
621 | writew(19999, baseAddr + TMS320_CLOCK); | |
622 | } | |
03718234 JS |
623 | } |
624 | writew(1, baseAddr + Disable_IRQ); | |
625 | writew(0, baseAddr + Magic_no); | |
626 | for (i = 0; i < 500; i++) { | |
627 | if (readw(baseAddr + Magic_no) == Magic_code) | |
628 | break; | |
629 | msleep(10); | |
630 | } | |
631 | if (readw(baseAddr + Magic_no) != Magic_code) | |
632 | return -EIO; | |
633 | ||
08d01c79 | 634 | if (MOXA_IS_320(brd)) { |
5292bcd3 JS |
635 | j = readw(baseAddr + Module_cnt); |
636 | if (j <= 0) | |
637 | return -EIO; | |
638 | brd->numPorts = j * 8; | |
639 | writew(j, baseAddr + Module_no); | |
640 | writew(0, baseAddr + Magic_no); | |
641 | for (i = 0; i < 600; i++) { | |
642 | if (readw(baseAddr + Magic_no) == Magic_code) | |
643 | break; | |
644 | msleep(10); | |
645 | } | |
646 | if (readw(baseAddr + Magic_no) != Magic_code) | |
647 | return -EIO; | |
03718234 | 648 | } |
03718234 JS |
649 | brd->intNdx = baseAddr + IRQindex; |
650 | brd->intPend = baseAddr + IRQpending; | |
651 | brd->intTable = baseAddr + IRQtable; | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, | |
657 | size_t len) | |
658 | { | |
659 | void __iomem *ofsAddr, *baseAddr = brd->basemem; | |
660 | struct moxa_port *port; | |
661 | int retval, i; | |
662 | ||
663 | if (len % 2) { | |
eaa95a8d | 664 | printk(KERN_ERR "MOXA: bios length is not even\n"); |
03718234 JS |
665 | return -EINVAL; |
666 | } | |
667 | ||
5292bcd3 JS |
668 | retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ |
669 | if (retval) | |
670 | return retval; | |
671 | ||
03718234 JS |
672 | switch (brd->boardType) { |
673 | case MOXA_BOARD_C218_ISA: | |
674 | case MOXA_BOARD_C218_PCI: | |
675 | case MOXA_BOARD_CP204J: | |
03718234 JS |
676 | port = brd->ports; |
677 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 678 | port->board = brd; |
03718234 JS |
679 | port->DCDState = 0; |
680 | port->tableAddr = baseAddr + Extern_table + | |
681 | Extern_size * i; | |
682 | ofsAddr = port->tableAddr; | |
683 | writew(C218rx_mask, ofsAddr + RX_mask); | |
684 | writew(C218tx_mask, ofsAddr + TX_mask); | |
685 | writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); | |
686 | writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); | |
687 | ||
688 | writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); | |
689 | writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); | |
690 | ||
691 | } | |
692 | break; | |
693 | default: | |
03718234 JS |
694 | port = brd->ports; |
695 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 696 | port->board = brd; |
03718234 JS |
697 | port->DCDState = 0; |
698 | port->tableAddr = baseAddr + Extern_table + | |
699 | Extern_size * i; | |
700 | ofsAddr = port->tableAddr; | |
701 | switch (brd->numPorts) { | |
702 | case 8: | |
703 | writew(C320p8rx_mask, ofsAddr + RX_mask); | |
704 | writew(C320p8tx_mask, ofsAddr + TX_mask); | |
705 | writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); | |
706 | writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); | |
707 | writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); | |
708 | writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); | |
709 | ||
710 | break; | |
711 | case 16: | |
712 | writew(C320p16rx_mask, ofsAddr + RX_mask); | |
713 | writew(C320p16tx_mask, ofsAddr + TX_mask); | |
714 | writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); | |
715 | writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); | |
716 | writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); | |
717 | writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); | |
718 | break; | |
719 | ||
720 | case 24: | |
721 | writew(C320p24rx_mask, ofsAddr + RX_mask); | |
722 | writew(C320p24tx_mask, ofsAddr + TX_mask); | |
723 | writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); | |
724 | writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); | |
725 | writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); | |
726 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
727 | break; | |
728 | case 32: | |
729 | writew(C320p32rx_mask, ofsAddr + RX_mask); | |
730 | writew(C320p32tx_mask, ofsAddr + TX_mask); | |
731 | writew(C320p32tx_ofs, ofsAddr + Ofs_txb); | |
732 | writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); | |
733 | writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); | |
734 | writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); | |
735 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
736 | break; | |
737 | } | |
738 | } | |
739 | break; | |
740 | } | |
03718234 JS |
741 | return 0; |
742 | } | |
743 | ||
744 | static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) | |
745 | { | |
2bca76e8 | 746 | const void *ptr = fw->data; |
03718234 JS |
747 | char rsn[64]; |
748 | u16 lens[5]; | |
749 | size_t len; | |
750 | unsigned int a, lenp, lencnt; | |
751 | int ret = -EINVAL; | |
752 | struct { | |
753 | __le32 magic; /* 0x34303430 */ | |
754 | u8 reserved1[2]; | |
755 | u8 type; /* UNIX = 3 */ | |
756 | u8 model; /* C218T=1, C320T=2, CP204=3 */ | |
757 | u8 reserved2[8]; | |
758 | __le16 len[5]; | |
2bca76e8 | 759 | } const *hdr = ptr; |
03718234 JS |
760 | |
761 | BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); | |
762 | ||
763 | if (fw->size < MOXA_FW_HDRLEN) { | |
764 | strcpy(rsn, "too short (even header won't fit)"); | |
765 | goto err; | |
766 | } | |
767 | if (hdr->magic != cpu_to_le32(0x30343034)) { | |
768 | sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); | |
769 | goto err; | |
770 | } | |
771 | if (hdr->type != 3) { | |
772 | sprintf(rsn, "not for linux, type is %u", hdr->type); | |
773 | goto err; | |
774 | } | |
775 | if (moxa_check_fw_model(brd, hdr->model)) { | |
776 | sprintf(rsn, "not for this card, model is %u", hdr->model); | |
777 | goto err; | |
778 | } | |
779 | ||
780 | len = MOXA_FW_HDRLEN; | |
781 | lencnt = hdr->model == 2 ? 5 : 3; | |
782 | for (a = 0; a < ARRAY_SIZE(lens); a++) { | |
783 | lens[a] = le16_to_cpu(hdr->len[a]); | |
784 | if (lens[a] && len + lens[a] <= fw->size && | |
785 | moxa_check_fw(&fw->data[len])) | |
eaa95a8d | 786 | printk(KERN_WARNING "MOXA firmware: unexpected input " |
03718234 JS |
787 | "at offset %u, but going on\n", (u32)len); |
788 | if (!lens[a] && a < lencnt) { | |
789 | sprintf(rsn, "too few entries in fw file"); | |
790 | goto err; | |
791 | } | |
792 | len += lens[a]; | |
793 | } | |
794 | ||
795 | if (len != fw->size) { | |
796 | sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, | |
797 | (u32)len); | |
798 | goto err; | |
799 | } | |
800 | ||
801 | ptr += MOXA_FW_HDRLEN; | |
802 | lenp = 0; /* bios */ | |
803 | ||
804 | strcpy(rsn, "read above"); | |
805 | ||
806 | ret = moxa_load_bios(brd, ptr, lens[lenp]); | |
807 | if (ret) | |
808 | goto err; | |
809 | ||
810 | /* we skip the tty section (lens[1]), since we don't need it */ | |
811 | ptr += lens[lenp] + lens[lenp + 1]; | |
812 | lenp += 2; /* comm */ | |
813 | ||
814 | if (hdr->model == 2) { | |
815 | ret = moxa_load_320b(brd, ptr, lens[lenp]); | |
816 | if (ret) | |
817 | goto err; | |
818 | /* skip another tty */ | |
819 | ptr += lens[lenp] + lens[lenp + 1]; | |
820 | lenp += 2; | |
821 | } | |
822 | ||
823 | ret = moxa_load_code(brd, ptr, lens[lenp]); | |
824 | if (ret) | |
825 | goto err; | |
826 | ||
827 | return 0; | |
828 | err: | |
829 | printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); | |
830 | return ret; | |
831 | } | |
832 | ||
833 | static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) | |
834 | { | |
835 | const struct firmware *fw; | |
836 | const char *file; | |
810ab09b JS |
837 | struct moxa_port *p; |
838 | unsigned int i; | |
03718234 JS |
839 | int ret; |
840 | ||
810ab09b JS |
841 | brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), |
842 | GFP_KERNEL); | |
843 | if (brd->ports == NULL) { | |
844 | printk(KERN_ERR "cannot allocate memory for ports\n"); | |
845 | ret = -ENOMEM; | |
846 | goto err; | |
847 | } | |
848 | ||
849 | for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { | |
44b7d1b3 | 850 | tty_port_init(&p->port); |
31f35939 | 851 | p->port.ops = &moxa_port_ops; |
810ab09b | 852 | p->type = PORT_16550A; |
810ab09b | 853 | p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
810ab09b JS |
854 | } |
855 | ||
03718234 JS |
856 | switch (brd->boardType) { |
857 | case MOXA_BOARD_C218_ISA: | |
858 | case MOXA_BOARD_C218_PCI: | |
859 | file = "c218tunx.cod"; | |
860 | break; | |
861 | case MOXA_BOARD_CP204J: | |
862 | file = "cp204unx.cod"; | |
863 | break; | |
864 | default: | |
865 | file = "c320tunx.cod"; | |
866 | break; | |
867 | } | |
868 | ||
869 | ret = request_firmware(&fw, file, dev); | |
870 | if (ret) { | |
ec09cd56 JS |
871 | printk(KERN_ERR "MOXA: request_firmware failed. Make sure " |
872 | "you've placed '%s' file into your firmware " | |
873 | "loader directory (e.g. /lib/firmware)\n", | |
874 | file); | |
810ab09b | 875 | goto err_free; |
03718234 JS |
876 | } |
877 | ||
878 | ret = moxa_load_fw(brd, fw); | |
879 | ||
880 | release_firmware(fw); | |
810ab09b JS |
881 | |
882 | if (ret) | |
883 | goto err_free; | |
884 | ||
2a541341 | 885 | spin_lock_bh(&moxa_lock); |
810ab09b | 886 | brd->ready = 1; |
0bcc4caa JS |
887 | if (!timer_pending(&moxaTimer)) |
888 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
2a541341 | 889 | spin_unlock_bh(&moxa_lock); |
0bcc4caa | 890 | |
810ab09b JS |
891 | return 0; |
892 | err_free: | |
893 | kfree(brd->ports); | |
894 | err: | |
03718234 JS |
895 | return ret; |
896 | } | |
897 | ||
810ab09b JS |
898 | static void moxa_board_deinit(struct moxa_board_conf *brd) |
899 | { | |
a8f5cda0 JS |
900 | unsigned int a, opened; |
901 | ||
902 | mutex_lock(&moxa_openlock); | |
7bcf97d1 | 903 | spin_lock_bh(&moxa_lock); |
810ab09b | 904 | brd->ready = 0; |
7bcf97d1 | 905 | spin_unlock_bh(&moxa_lock); |
a8f5cda0 JS |
906 | |
907 | /* pci hot-un-plug support */ | |
908 | for (a = 0; a < brd->numPorts; a++) | |
d450b5a0 AC |
909 | if (brd->ports[a].port.flags & ASYNC_INITIALIZED) { |
910 | struct tty_struct *tty = tty_port_tty_get( | |
911 | &brd->ports[a].port); | |
912 | if (tty) { | |
913 | tty_hangup(tty); | |
914 | tty_kref_put(tty); | |
915 | } | |
916 | } | |
a8f5cda0 JS |
917 | while (1) { |
918 | opened = 0; | |
919 | for (a = 0; a < brd->numPorts; a++) | |
9de6a51f | 920 | if (brd->ports[a].port.flags & ASYNC_INITIALIZED) |
a8f5cda0 JS |
921 | opened++; |
922 | mutex_unlock(&moxa_openlock); | |
923 | if (!opened) | |
924 | break; | |
925 | msleep(50); | |
926 | mutex_lock(&moxa_openlock); | |
927 | } | |
928 | ||
810ab09b JS |
929 | iounmap(brd->basemem); |
930 | brd->basemem = NULL; | |
931 | kfree(brd->ports); | |
932 | } | |
933 | ||
1da177e4 | 934 | #ifdef CONFIG_PCI |
9cde5bf0 JS |
935 | static int __devinit moxa_pci_probe(struct pci_dev *pdev, |
936 | const struct pci_device_id *ent) | |
1da177e4 | 937 | { |
9cde5bf0 JS |
938 | struct moxa_board_conf *board; |
939 | unsigned int i; | |
940 | int board_type = ent->driver_data; | |
941 | int retval; | |
942 | ||
943 | retval = pci_enable_device(pdev); | |
7aeb95da JS |
944 | if (retval) { |
945 | dev_err(&pdev->dev, "can't enable pci device\n"); | |
9cde5bf0 | 946 | goto err; |
7aeb95da | 947 | } |
9cde5bf0 JS |
948 | |
949 | for (i = 0; i < MAX_BOARDS; i++) | |
950 | if (moxa_boards[i].basemem == NULL) | |
951 | break; | |
952 | ||
953 | retval = -ENODEV; | |
954 | if (i >= MAX_BOARDS) { | |
7aeb95da | 955 | dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " |
9cde5bf0 JS |
956 | "found. Board is ignored.\n", MAX_BOARDS); |
957 | goto err; | |
958 | } | |
959 | ||
960 | board = &moxa_boards[i]; | |
e46a5e3f JS |
961 | |
962 | retval = pci_request_region(pdev, 2, "moxa-base"); | |
963 | if (retval) { | |
964 | dev_err(&pdev->dev, "can't request pci region 2\n"); | |
965 | goto err; | |
966 | } | |
967 | ||
24cb2335 | 968 | board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); |
7aeb95da JS |
969 | if (board->basemem == NULL) { |
970 | dev_err(&pdev->dev, "can't remap io space 2\n"); | |
e46a5e3f | 971 | goto err_reg; |
7aeb95da | 972 | } |
9cde5bf0 | 973 | |
1da177e4 LT |
974 | board->boardType = board_type; |
975 | switch (board_type) { | |
976 | case MOXA_BOARD_C218_ISA: | |
977 | case MOXA_BOARD_C218_PCI: | |
978 | board->numPorts = 8; | |
979 | break; | |
980 | ||
981 | case MOXA_BOARD_CP204J: | |
982 | board->numPorts = 4; | |
983 | break; | |
984 | default: | |
985 | board->numPorts = 0; | |
986 | break; | |
987 | } | |
988 | board->busType = MOXA_BUS_TYPE_PCI; | |
a784bf7c | 989 | |
03718234 JS |
990 | retval = moxa_init_board(board, &pdev->dev); |
991 | if (retval) | |
992 | goto err_base; | |
993 | ||
9cde5bf0 | 994 | pci_set_drvdata(pdev, board); |
1da177e4 | 995 | |
bb9f910a JS |
996 | dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", |
997 | moxa_brdname[board_type - 1], board->numPorts); | |
998 | ||
eaa95a8d | 999 | return 0; |
03718234 JS |
1000 | err_base: |
1001 | iounmap(board->basemem); | |
1002 | board->basemem = NULL; | |
e46a5e3f JS |
1003 | err_reg: |
1004 | pci_release_region(pdev, 2); | |
9cde5bf0 JS |
1005 | err: |
1006 | return retval; | |
1007 | } | |
1008 | ||
1009 | static void __devexit moxa_pci_remove(struct pci_dev *pdev) | |
1010 | { | |
1011 | struct moxa_board_conf *brd = pci_get_drvdata(pdev); | |
1012 | ||
810ab09b JS |
1013 | moxa_board_deinit(brd); |
1014 | ||
e46a5e3f | 1015 | pci_release_region(pdev, 2); |
1da177e4 | 1016 | } |
a784bf7c JS |
1017 | |
1018 | static struct pci_driver moxa_pci_driver = { | |
1019 | .name = "moxa", | |
1020 | .id_table = moxa_pcibrds, | |
1021 | .probe = moxa_pci_probe, | |
1022 | .remove = __devexit_p(moxa_pci_remove) | |
1023 | }; | |
1da177e4 LT |
1024 | #endif /* CONFIG_PCI */ |
1025 | ||
1026 | static int __init moxa_init(void) | |
1027 | { | |
810ab09b | 1028 | unsigned int isabrds = 0; |
d353eca4 | 1029 | int retval = 0; |
1da177e4 | 1030 | |
7aeb95da JS |
1031 | printk(KERN_INFO "MOXA Intellio family driver version %s\n", |
1032 | MOXA_VERSION); | |
1da177e4 LT |
1033 | moxaDriver = alloc_tty_driver(MAX_PORTS + 1); |
1034 | if (!moxaDriver) | |
1035 | return -ENOMEM; | |
1036 | ||
1da177e4 | 1037 | moxaDriver->owner = THIS_MODULE; |
9b4e3b13 | 1038 | moxaDriver->name = "ttyMX"; |
1da177e4 LT |
1039 | moxaDriver->major = ttymajor; |
1040 | moxaDriver->minor_start = 0; | |
1041 | moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; | |
1042 | moxaDriver->subtype = SERIAL_TYPE_NORMAL; | |
1043 | moxaDriver->init_termios = tty_std_termios; | |
1da177e4 | 1044 | moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
606d099c AC |
1045 | moxaDriver->init_termios.c_ispeed = 9600; |
1046 | moxaDriver->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
1047 | moxaDriver->flags = TTY_DRIVER_REAL_RAW; |
1048 | tty_set_operations(moxaDriver, &moxa_ops); | |
1049 | ||
1da177e4 | 1050 | if (tty_register_driver(moxaDriver)) { |
eaa95a8d | 1051 | printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); |
1da177e4 LT |
1052 | put_tty_driver(moxaDriver); |
1053 | return -1; | |
1054 | } | |
1da177e4 | 1055 | |
d353eca4 | 1056 | /* Find the boards defined from module args. */ |
1da177e4 | 1057 | #ifdef MODULE |
d353eca4 JS |
1058 | { |
1059 | struct moxa_board_conf *brd = moxa_boards; | |
810ab09b | 1060 | unsigned int i; |
1da177e4 | 1061 | for (i = 0; i < MAX_BOARDS; i++) { |
d353eca4 JS |
1062 | if (!baseaddr[i]) |
1063 | break; | |
1064 | if (type[i] == MOXA_BOARD_C218_ISA || | |
1065 | type[i] == MOXA_BOARD_C320_ISA) { | |
7aeb95da | 1066 | pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", |
d353eca4 JS |
1067 | isabrds + 1, moxa_brdname[type[i] - 1], |
1068 | baseaddr[i]); | |
1069 | brd->boardType = type[i]; | |
1070 | brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : | |
1071 | numports[i]; | |
1072 | brd->busType = MOXA_BUS_TYPE_ISA; | |
24cb2335 | 1073 | brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); |
d353eca4 | 1074 | if (!brd->basemem) { |
eaa95a8d | 1075 | printk(KERN_ERR "MOXA: can't remap %lx\n", |
d353eca4 | 1076 | baseaddr[i]); |
1da177e4 LT |
1077 | continue; |
1078 | } | |
03718234 JS |
1079 | if (moxa_init_board(brd, NULL)) { |
1080 | iounmap(brd->basemem); | |
1081 | brd->basemem = NULL; | |
1082 | continue; | |
1083 | } | |
d353eca4 | 1084 | |
bb9f910a JS |
1085 | printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " |
1086 | "ready (%u ports, firmware loaded)\n", | |
1087 | baseaddr[i], brd->numPorts); | |
1088 | ||
d353eca4 JS |
1089 | brd++; |
1090 | isabrds++; | |
1da177e4 LT |
1091 | } |
1092 | } | |
d353eca4 | 1093 | } |
1da177e4 | 1094 | #endif |
a784bf7c | 1095 | |
1da177e4 | 1096 | #ifdef CONFIG_PCI |
a784bf7c JS |
1097 | retval = pci_register_driver(&moxa_pci_driver); |
1098 | if (retval) { | |
eaa95a8d | 1099 | printk(KERN_ERR "Can't register MOXA pci driver!\n"); |
d353eca4 | 1100 | if (isabrds) |
a784bf7c | 1101 | retval = 0; |
1da177e4 LT |
1102 | } |
1103 | #endif | |
a784bf7c | 1104 | |
a784bf7c | 1105 | return retval; |
1da177e4 LT |
1106 | } |
1107 | ||
1108 | static void __exit moxa_exit(void) | |
1109 | { | |
eaa95a8d | 1110 | unsigned int i; |
1da177e4 | 1111 | |
9cde5bf0 | 1112 | #ifdef CONFIG_PCI |
a784bf7c | 1113 | pci_unregister_driver(&moxa_pci_driver); |
9cde5bf0 | 1114 | #endif |
a784bf7c | 1115 | |
810ab09b JS |
1116 | for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ |
1117 | if (moxa_boards[i].ready) | |
1118 | moxa_board_deinit(&moxa_boards[i]); | |
2a541341 JS |
1119 | |
1120 | del_timer_sync(&moxaTimer); | |
1121 | ||
1122 | if (tty_unregister_driver(moxaDriver)) | |
1123 | printk(KERN_ERR "Couldn't unregister MOXA Intellio family " | |
1124 | "serial driver\n"); | |
1125 | put_tty_driver(moxaDriver); | |
1da177e4 LT |
1126 | } |
1127 | ||
1128 | module_init(moxa_init); | |
1129 | module_exit(moxa_exit); | |
1130 | ||
f176178b | 1131 | static void moxa_shutdown(struct tty_port *port) |
a8f5cda0 | 1132 | { |
f176178b AC |
1133 | struct moxa_port *ch = container_of(port, struct moxa_port, port); |
1134 | MoxaPortDisable(ch); | |
a8f5cda0 | 1135 | MoxaPortFlushData(ch, 2); |
f176178b | 1136 | clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags); |
a8f5cda0 JS |
1137 | } |
1138 | ||
31f35939 AC |
1139 | static int moxa_carrier_raised(struct tty_port *port) |
1140 | { | |
1141 | struct moxa_port *ch = container_of(port, struct moxa_port, port); | |
1142 | int dcd; | |
1143 | ||
1144 | spin_lock_bh(&moxa_lock); | |
1145 | dcd = ch->DCDState; | |
1146 | spin_unlock_bh(&moxa_lock); | |
1147 | return dcd; | |
1148 | } | |
1149 | ||
f176178b | 1150 | static void moxa_dtr_rts(struct tty_port *port, int onoff) |
a8f5cda0 | 1151 | { |
f176178b AC |
1152 | struct moxa_port *ch = container_of(port, struct moxa_port, port); |
1153 | MoxaPortLineCtrl(ch, onoff, onoff); | |
a8f5cda0 JS |
1154 | } |
1155 | ||
f176178b | 1156 | |
1da177e4 LT |
1157 | static int moxa_open(struct tty_struct *tty, struct file *filp) |
1158 | { | |
810ab09b | 1159 | struct moxa_board_conf *brd; |
8f8ecbad | 1160 | struct moxa_port *ch; |
1da177e4 LT |
1161 | int port; |
1162 | int retval; | |
1da177e4 | 1163 | |
11324edd | 1164 | port = tty->index; |
1da177e4 | 1165 | if (port == MAX_PORTS) { |
74d7d97b | 1166 | return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; |
1da177e4 | 1167 | } |
a8f5cda0 JS |
1168 | if (mutex_lock_interruptible(&moxa_openlock)) |
1169 | return -ERESTARTSYS; | |
810ab09b | 1170 | brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; |
a8f5cda0 JS |
1171 | if (!brd->ready) { |
1172 | mutex_unlock(&moxa_openlock); | |
810ab09b | 1173 | return -ENODEV; |
a8f5cda0 | 1174 | } |
1da177e4 | 1175 | |
f0e85277 DE |
1176 | if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) { |
1177 | mutex_unlock(&moxa_openlock); | |
1178 | return -ENODEV; | |
1179 | } | |
1180 | ||
810ab09b | 1181 | ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; |
9de6a51f | 1182 | ch->port.count++; |
1da177e4 | 1183 | tty->driver_data = ch; |
d450b5a0 | 1184 | tty_port_tty_set(&ch->port, tty); |
f176178b | 1185 | mutex_lock(&ch->port.mutex); |
9de6a51f | 1186 | if (!(ch->port.flags & ASYNC_INITIALIZED)) { |
1da177e4 | 1187 | ch->statusflags = 0; |
db1acaa6 | 1188 | moxa_set_tty_param(tty, tty->termios); |
b4173f45 JS |
1189 | MoxaPortLineCtrl(ch, 1, 1); |
1190 | MoxaPortEnable(ch); | |
a8f5cda0 | 1191 | MoxaSetFifo(ch, ch->type == PORT_16550A); |
9de6a51f | 1192 | ch->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1193 | } |
f176178b | 1194 | mutex_unlock(&ch->port.mutex); |
a8f5cda0 | 1195 | mutex_unlock(&moxa_openlock); |
1da177e4 | 1196 | |
f176178b AC |
1197 | retval = tty_port_block_til_ready(&ch->port, tty, filp); |
1198 | if (retval == 0) | |
1199 | set_bit(ASYNCB_NORMAL_ACTIVE, &ch->port.flags); | |
a8f5cda0 | 1200 | return retval; |
1da177e4 LT |
1201 | } |
1202 | ||
1203 | static void moxa_close(struct tty_struct *tty, struct file *filp) | |
1204 | { | |
f176178b | 1205 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1206 | ch->cflag = tty->termios->c_cflag; |
f176178b | 1207 | tty_port_close(&ch->port, tty, filp); |
1da177e4 LT |
1208 | } |
1209 | ||
1210 | static int moxa_write(struct tty_struct *tty, | |
1211 | const unsigned char *buf, int count) | |
1212 | { | |
b4173f45 | 1213 | struct moxa_port *ch = tty->driver_data; |
b4173f45 | 1214 | int len; |
1da177e4 | 1215 | |
1da177e4 | 1216 | if (ch == NULL) |
b4173f45 | 1217 | return 0; |
33f0f88f | 1218 | |
7bcf97d1 | 1219 | spin_lock_bh(&moxa_lock); |
d450b5a0 | 1220 | len = MoxaPortWriteData(tty, buf, count); |
7bcf97d1 | 1221 | spin_unlock_bh(&moxa_lock); |
1da177e4 | 1222 | |
a808ac0c | 1223 | set_bit(LOWWAIT, &ch->statusflags); |
eaa95a8d | 1224 | return len; |
1da177e4 LT |
1225 | } |
1226 | ||
1227 | static int moxa_write_room(struct tty_struct *tty) | |
1228 | { | |
8f8ecbad | 1229 | struct moxa_port *ch; |
1da177e4 LT |
1230 | |
1231 | if (tty->stopped) | |
eaa95a8d | 1232 | return 0; |
b4173f45 | 1233 | ch = tty->driver_data; |
1da177e4 | 1234 | if (ch == NULL) |
eaa95a8d | 1235 | return 0; |
b4173f45 | 1236 | return MoxaPortTxFree(ch); |
1da177e4 LT |
1237 | } |
1238 | ||
1239 | static void moxa_flush_buffer(struct tty_struct *tty) | |
1240 | { | |
b4173f45 | 1241 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1242 | |
1243 | if (ch == NULL) | |
1244 | return; | |
b4173f45 | 1245 | MoxaPortFlushData(ch, 1); |
1da177e4 LT |
1246 | tty_wakeup(tty); |
1247 | } | |
1248 | ||
1249 | static int moxa_chars_in_buffer(struct tty_struct *tty) | |
1250 | { | |
b4173f45 | 1251 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1252 | int chars; |
1da177e4 | 1253 | |
978e595f | 1254 | lock_kernel(); |
b4173f45 | 1255 | chars = MoxaPortTxQueue(ch); |
1da177e4 LT |
1256 | if (chars) { |
1257 | /* | |
1258 | * Make it possible to wakeup anything waiting for output | |
1259 | * in tty_ioctl.c, etc. | |
1260 | */ | |
a808ac0c | 1261 | if (!test_bit(EMPTYWAIT, &ch->statusflags)) |
6f56b658 | 1262 | moxa_setup_empty_event(tty); |
1da177e4 | 1263 | } |
978e595f | 1264 | unlock_kernel(); |
eaa95a8d | 1265 | return chars; |
1da177e4 LT |
1266 | } |
1267 | ||
1da177e4 LT |
1268 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file) |
1269 | { | |
a8f5cda0 | 1270 | struct moxa_port *ch; |
1da177e4 LT |
1271 | int flag = 0, dtr, rts; |
1272 | ||
a8f5cda0 JS |
1273 | mutex_lock(&moxa_openlock); |
1274 | ch = tty->driver_data; | |
1275 | if (!ch) { | |
1276 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1277 | return -EINVAL; |
a8f5cda0 | 1278 | } |
1da177e4 | 1279 | |
b4173f45 | 1280 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1281 | if (dtr) |
1282 | flag |= TIOCM_DTR; | |
1283 | if (rts) | |
1284 | flag |= TIOCM_RTS; | |
b4173f45 | 1285 | dtr = MoxaPortLineStatus(ch); |
1da177e4 LT |
1286 | if (dtr & 1) |
1287 | flag |= TIOCM_CTS; | |
1288 | if (dtr & 2) | |
1289 | flag |= TIOCM_DSR; | |
1290 | if (dtr & 4) | |
1291 | flag |= TIOCM_CD; | |
a8f5cda0 | 1292 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1293 | return flag; |
1294 | } | |
1295 | ||
1296 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
1297 | unsigned int set, unsigned int clear) | |
1298 | { | |
a8f5cda0 | 1299 | struct moxa_port *ch; |
1da177e4 LT |
1300 | int port; |
1301 | int dtr, rts; | |
1302 | ||
11324edd | 1303 | port = tty->index; |
a8f5cda0 JS |
1304 | mutex_lock(&moxa_openlock); |
1305 | ch = tty->driver_data; | |
1306 | if (!ch) { | |
1307 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1308 | return -EINVAL; |
a8f5cda0 | 1309 | } |
1da177e4 | 1310 | |
b4173f45 | 1311 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1312 | if (set & TIOCM_RTS) |
1313 | rts = 1; | |
1314 | if (set & TIOCM_DTR) | |
1315 | dtr = 1; | |
1316 | if (clear & TIOCM_RTS) | |
1317 | rts = 0; | |
1318 | if (clear & TIOCM_DTR) | |
1319 | dtr = 0; | |
b4173f45 | 1320 | MoxaPortLineCtrl(ch, dtr, rts); |
a8f5cda0 | 1321 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1322 | return 0; |
1323 | } | |
1324 | ||
1da177e4 | 1325 | static void moxa_set_termios(struct tty_struct *tty, |
eaa95a8d | 1326 | struct ktermios *old_termios) |
1da177e4 | 1327 | { |
eaa95a8d | 1328 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1329 | |
1330 | if (ch == NULL) | |
1331 | return; | |
db1acaa6 | 1332 | moxa_set_tty_param(tty, old_termios); |
eaa95a8d | 1333 | if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) |
9de6a51f | 1334 | wake_up_interruptible(&ch->port.open_wait); |
1da177e4 LT |
1335 | } |
1336 | ||
1337 | static void moxa_stop(struct tty_struct *tty) | |
1338 | { | |
eaa95a8d | 1339 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1340 | |
1341 | if (ch == NULL) | |
1342 | return; | |
b4173f45 | 1343 | MoxaPortTxDisable(ch); |
a808ac0c | 1344 | set_bit(TXSTOPPED, &ch->statusflags); |
1da177e4 LT |
1345 | } |
1346 | ||
1347 | ||
1348 | static void moxa_start(struct tty_struct *tty) | |
1349 | { | |
eaa95a8d | 1350 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1351 | |
1352 | if (ch == NULL) | |
1353 | return; | |
1354 | ||
1355 | if (!(ch->statusflags & TXSTOPPED)) | |
1356 | return; | |
1357 | ||
b4173f45 | 1358 | MoxaPortTxEnable(ch); |
a808ac0c | 1359 | clear_bit(TXSTOPPED, &ch->statusflags); |
1da177e4 LT |
1360 | } |
1361 | ||
1362 | static void moxa_hangup(struct tty_struct *tty) | |
1363 | { | |
a808ac0c | 1364 | struct moxa_port *ch = tty->driver_data; |
f176178b | 1365 | tty_port_hangup(&ch->port); |
1da177e4 LT |
1366 | } |
1367 | ||
7bcf97d1 | 1368 | static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) |
1da177e4 | 1369 | { |
d450b5a0 | 1370 | struct tty_struct *tty; |
7bcf97d1 | 1371 | dcd = !!dcd; |
1da177e4 | 1372 | |
d450b5a0 AC |
1373 | if (dcd != p->DCDState) { |
1374 | tty = tty_port_tty_get(&p->port); | |
1375 | if (tty && C_CLOCAL(tty) && !dcd) | |
1376 | tty_hangup(tty); | |
1377 | tty_kref_put(tty); | |
7bcf97d1 JS |
1378 | } |
1379 | p->DCDState = dcd; | |
1380 | } | |
1da177e4 | 1381 | |
7bcf97d1 JS |
1382 | static int moxa_poll_port(struct moxa_port *p, unsigned int handle, |
1383 | u16 __iomem *ip) | |
1384 | { | |
d450b5a0 | 1385 | struct tty_struct *tty = tty_port_tty_get(&p->port); |
7bcf97d1 | 1386 | void __iomem *ofsAddr; |
9de6a51f | 1387 | unsigned int inited = p->port.flags & ASYNC_INITIALIZED; |
7bcf97d1 JS |
1388 | u16 intr; |
1389 | ||
1390 | if (tty) { | |
a808ac0c | 1391 | if (test_bit(EMPTYWAIT, &p->statusflags) && |
7bcf97d1 | 1392 | MoxaPortTxQueue(p) == 0) { |
a808ac0c | 1393 | clear_bit(EMPTYWAIT, &p->statusflags); |
7bcf97d1 JS |
1394 | tty_wakeup(tty); |
1395 | } | |
a808ac0c | 1396 | if (test_bit(LOWWAIT, &p->statusflags) && !tty->stopped && |
7bcf97d1 | 1397 | MoxaPortTxQueue(p) <= WAKEUP_CHARS) { |
a808ac0c | 1398 | clear_bit(LOWWAIT, &p->statusflags); |
7bcf97d1 JS |
1399 | tty_wakeup(tty); |
1400 | } | |
1401 | ||
f9b412a8 | 1402 | if (inited && !test_bit(TTY_THROTTLED, &tty->flags) && |
7bcf97d1 JS |
1403 | MoxaPortRxQueue(p) > 0) { /* RX */ |
1404 | MoxaPortReadData(p); | |
1405 | tty_schedule_flip(tty); | |
1406 | } | |
1407 | } else { | |
a808ac0c | 1408 | clear_bit(EMPTYWAIT, &p->statusflags); |
7bcf97d1 | 1409 | MoxaPortFlushData(p, 0); /* flush RX */ |
1da177e4 | 1410 | } |
0bcc4caa | 1411 | |
7bcf97d1 | 1412 | if (!handle) /* nothing else to do */ |
0e0fd7d7 | 1413 | goto put; |
7bcf97d1 JS |
1414 | |
1415 | intr = readw(ip); /* port irq status */ | |
1416 | if (intr == 0) | |
0e0fd7d7 | 1417 | goto put; |
7bcf97d1 JS |
1418 | |
1419 | writew(0, ip); /* ACK port */ | |
1420 | ofsAddr = p->tableAddr; | |
1421 | if (intr & IntrTx) /* disable tx intr */ | |
1422 | writew(readw(ofsAddr + HostStat) & ~WakeupTx, | |
1423 | ofsAddr + HostStat); | |
1424 | ||
1425 | if (!inited) | |
0e0fd7d7 | 1426 | goto put; |
7bcf97d1 JS |
1427 | |
1428 | if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ | |
1429 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1430 | tty_schedule_flip(tty); | |
1431 | } | |
1432 | ||
1433 | if (intr & IntrLine) | |
1434 | moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); | |
0e0fd7d7 JS |
1435 | put: |
1436 | tty_kref_put(tty); | |
7bcf97d1 JS |
1437 | |
1438 | return 0; | |
1439 | } | |
1440 | ||
1441 | static void moxa_poll(unsigned long ignored) | |
1442 | { | |
1443 | struct moxa_board_conf *brd; | |
1444 | u16 __iomem *ip; | |
2a541341 | 1445 | unsigned int card, port, served = 0; |
7bcf97d1 JS |
1446 | |
1447 | spin_lock(&moxa_lock); | |
1da177e4 | 1448 | for (card = 0; card < MAX_BOARDS; card++) { |
7bcf97d1 JS |
1449 | brd = &moxa_boards[card]; |
1450 | if (!brd->ready) | |
1da177e4 | 1451 | continue; |
7bcf97d1 | 1452 | |
2a541341 JS |
1453 | served++; |
1454 | ||
7bcf97d1 JS |
1455 | ip = NULL; |
1456 | if (readb(brd->intPend) == 0xff) | |
1457 | ip = brd->intTable + readb(brd->intNdx); | |
1458 | ||
1459 | for (port = 0; port < brd->numPorts; port++) | |
1460 | moxa_poll_port(&brd->ports[port], !!ip, ip + port); | |
1461 | ||
1462 | if (ip) | |
1463 | writeb(0, brd->intPend); /* ACK */ | |
1464 | ||
1465 | if (moxaLowWaterChk) { | |
1466 | struct moxa_port *p = brd->ports; | |
1467 | for (port = 0; port < brd->numPorts; port++, p++) | |
1468 | if (p->lowChkFlag) { | |
1469 | p->lowChkFlag = 0; | |
1470 | moxa_low_water_check(p->tableAddr); | |
1da177e4 | 1471 | } |
1da177e4 LT |
1472 | } |
1473 | } | |
7bcf97d1 | 1474 | moxaLowWaterChk = 0; |
1da177e4 | 1475 | |
2a541341 JS |
1476 | if (served) |
1477 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
1478 | spin_unlock(&moxa_lock); | |
1da177e4 LT |
1479 | } |
1480 | ||
1481 | /******************************************************************************/ | |
1482 | ||
db1acaa6 | 1483 | static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 1484 | { |
eaa95a8d JS |
1485 | register struct ktermios *ts = tty->termios; |
1486 | struct moxa_port *ch = tty->driver_data; | |
db1acaa6 | 1487 | int rts, cts, txflow, rxflow, xany, baud; |
1da177e4 | 1488 | |
1da177e4 LT |
1489 | rts = cts = txflow = rxflow = xany = 0; |
1490 | if (ts->c_cflag & CRTSCTS) | |
1491 | rts = cts = 1; | |
1492 | if (ts->c_iflag & IXON) | |
1493 | txflow = 1; | |
1494 | if (ts->c_iflag & IXOFF) | |
1495 | rxflow = 1; | |
1496 | if (ts->c_iflag & IXANY) | |
1497 | xany = 1; | |
db1acaa6 AC |
1498 | |
1499 | /* Clear the features we don't support */ | |
1500 | ts->c_cflag &= ~CMSPAR; | |
b4173f45 JS |
1501 | MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); |
1502 | baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); | |
db1acaa6 AC |
1503 | if (baud == -1) |
1504 | baud = tty_termios_baud_rate(old_termios); | |
1505 | /* Not put the baud rate into the termios data */ | |
1506 | tty_encode_baud_rate(tty, baud, baud); | |
1da177e4 LT |
1507 | } |
1508 | ||
6f56b658 | 1509 | static void moxa_setup_empty_event(struct tty_struct *tty) |
1da177e4 | 1510 | { |
8f8ecbad | 1511 | struct moxa_port *ch = tty->driver_data; |
a808ac0c | 1512 | set_bit(EMPTYWAIT, &ch->statusflags); |
1da177e4 LT |
1513 | } |
1514 | ||
1da177e4 LT |
1515 | /***************************************************************************** |
1516 | * Driver level functions: * | |
1da177e4 | 1517 | *****************************************************************************/ |
1da177e4 | 1518 | |
b4173f45 | 1519 | static void MoxaPortFlushData(struct moxa_port *port, int mode) |
1da177e4 LT |
1520 | { |
1521 | void __iomem *ofsAddr; | |
eaa95a8d | 1522 | if (mode < 0 || mode > 2) |
1da177e4 | 1523 | return; |
b4173f45 | 1524 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1525 | moxafunc(ofsAddr, FC_FlushQueue, mode); |
1526 | if (mode != 1) { | |
b4173f45 | 1527 | port->lowChkFlag = 0; |
6f56b658 | 1528 | moxa_low_water_check(ofsAddr); |
1da177e4 LT |
1529 | } |
1530 | } | |
1531 | ||
1da177e4 LT |
1532 | /* |
1533 | * Moxa Port Number Description: | |
1534 | * | |
1535 | * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, | |
1536 | * the port number using in MOXA driver functions will be 0 to 31 for | |
1537 | * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 | |
1538 | * to 127 for fourth. For example, if you setup three MOXA boards, | |
1539 | * first board is C218, second board is C320-16 and third board is | |
1540 | * C320-32. The port number of first board (C218 - 8 ports) is from | |
1541 | * 0 to 7. The port number of second board (C320 - 16 ports) is form | |
1542 | * 32 to 47. The port number of third board (C320 - 32 ports) is from | |
1543 | * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to | |
1544 | * 127 will be invalid. | |
1545 | * | |
1546 | * | |
1547 | * Moxa Functions Description: | |
1548 | * | |
1549 | * Function 1: Driver initialization routine, this routine must be | |
1550 | * called when initialized driver. | |
1551 | * Syntax: | |
1552 | * void MoxaDriverInit(); | |
1553 | * | |
1554 | * | |
1555 | * Function 2: Moxa driver private IOCTL command processing. | |
1556 | * Syntax: | |
1557 | * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); | |
1558 | * | |
1559 | * unsigned int cmd : IOCTL command | |
1560 | * unsigned long arg : IOCTL argument | |
1561 | * int port : port number (0 - 127) | |
1562 | * | |
1563 | * return: 0 (OK) | |
1564 | * -EINVAL | |
1565 | * -ENOIOCTLCMD | |
1566 | * | |
1567 | * | |
1da177e4 LT |
1568 | * Function 6: Enable this port to start Tx/Rx data. |
1569 | * Syntax: | |
1570 | * void MoxaPortEnable(int port); | |
1571 | * int port : port number (0 - 127) | |
1572 | * | |
1573 | * | |
1574 | * Function 7: Disable this port | |
1575 | * Syntax: | |
1576 | * void MoxaPortDisable(int port); | |
1577 | * int port : port number (0 - 127) | |
1578 | * | |
1579 | * | |
1da177e4 LT |
1580 | * Function 10: Setting baud rate of this port. |
1581 | * Syntax: | |
08d01c79 | 1582 | * speed_t MoxaPortSetBaud(int port, speed_t baud); |
1da177e4 LT |
1583 | * int port : port number (0 - 127) |
1584 | * long baud : baud rate (50 - 115200) | |
1585 | * | |
1586 | * return: 0 : this port is invalid or baud < 50 | |
1587 | * 50 - 115200 : the real baud rate set to the port, if | |
1588 | * the argument baud is large than maximun | |
1589 | * available baud rate, the real setting | |
1590 | * baud rate will be the maximun baud rate. | |
1591 | * | |
1592 | * | |
1da177e4 LT |
1593 | * Function 12: Configure the port. |
1594 | * Syntax: | |
606d099c | 1595 | * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); |
1da177e4 | 1596 | * int port : port number (0 - 127) |
606d099c | 1597 | * struct ktermios * termio : termio structure pointer |
c7bce309 | 1598 | * speed_t baud : baud rate |
1da177e4 LT |
1599 | * |
1600 | * return: -1 : this port is invalid or termio == NULL | |
1601 | * 0 : setting O.K. | |
1602 | * | |
1603 | * | |
1604 | * Function 13: Get the DTR/RTS state of this port. | |
1605 | * Syntax: | |
1606 | * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); | |
1607 | * int port : port number (0 - 127) | |
1608 | * int * dtrState : pointer to INT to receive the current DTR | |
1609 | * state. (if NULL, this function will not | |
1610 | * write to this address) | |
1611 | * int * rtsState : pointer to INT to receive the current RTS | |
1612 | * state. (if NULL, this function will not | |
1613 | * write to this address) | |
1614 | * | |
1615 | * return: -1 : this port is invalid | |
1616 | * 0 : O.K. | |
1617 | * | |
1618 | * | |
1619 | * Function 14: Setting the DTR/RTS output state of this port. | |
1620 | * Syntax: | |
1621 | * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); | |
1622 | * int port : port number (0 - 127) | |
1623 | * int dtrState : DTR output state (0: off, 1: on) | |
1624 | * int rtsState : RTS output state (0: off, 1: on) | |
1625 | * | |
1626 | * | |
1627 | * Function 15: Setting the flow control of this port. | |
1628 | * Syntax: | |
1629 | * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, | |
1630 | * int txFlow,int xany); | |
1631 | * int port : port number (0 - 127) | |
1632 | * int rtsFlow : H/W RTS flow control (0: no, 1: yes) | |
1633 | * int ctsFlow : H/W CTS flow control (0: no, 1: yes) | |
1634 | * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) | |
1635 | * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) | |
1636 | * int xany : S/W XANY flow control (0: no, 1: yes) | |
1637 | * | |
1638 | * | |
1639 | * Function 16: Get ths line status of this port | |
1640 | * Syntax: | |
1641 | * int MoxaPortLineStatus(int port); | |
1642 | * int port : port number (0 - 127) | |
1643 | * | |
1644 | * return: Bit 0 - CTS state (0: off, 1: on) | |
1645 | * Bit 1 - DSR state (0: off, 1: on) | |
1646 | * Bit 2 - DCD state (0: off, 1: on) | |
1647 | * | |
1648 | * | |
1da177e4 LT |
1649 | * Function 19: Flush the Rx/Tx buffer data of this port. |
1650 | * Syntax: | |
1651 | * void MoxaPortFlushData(int port, int mode); | |
1652 | * int port : port number (0 - 127) | |
1653 | * int mode | |
1654 | * 0 : flush the Rx buffer | |
1655 | * 1 : flush the Tx buffer | |
1656 | * 2 : flush the Rx and Tx buffer | |
1657 | * | |
1658 | * | |
1659 | * Function 20: Write data. | |
1660 | * Syntax: | |
1661 | * int MoxaPortWriteData(int port, unsigned char * buffer, int length); | |
1662 | * int port : port number (0 - 127) | |
1663 | * unsigned char * buffer : pointer to write data buffer. | |
1664 | * int length : write data length | |
1665 | * | |
1666 | * return: 0 - length : real write data length | |
1667 | * | |
1668 | * | |
1669 | * Function 21: Read data. | |
1670 | * Syntax: | |
33f0f88f | 1671 | * int MoxaPortReadData(int port, struct tty_struct *tty); |
1da177e4 | 1672 | * int port : port number (0 - 127) |
33f0f88f | 1673 | * struct tty_struct *tty : tty for data |
1da177e4 LT |
1674 | * |
1675 | * return: 0 - length : real read data length | |
1676 | * | |
1677 | * | |
1da177e4 LT |
1678 | * Function 24: Get the Tx buffer current queued data bytes |
1679 | * Syntax: | |
1680 | * int MoxaPortTxQueue(int port); | |
1681 | * int port : port number (0 - 127) | |
1682 | * | |
1683 | * return: .. : Tx buffer current queued data bytes | |
1684 | * | |
1685 | * | |
1686 | * Function 25: Get the Tx buffer current free space | |
1687 | * Syntax: | |
1688 | * int MoxaPortTxFree(int port); | |
1689 | * int port : port number (0 - 127) | |
1690 | * | |
1691 | * return: .. : Tx buffer current free space | |
1692 | * | |
1693 | * | |
1694 | * Function 26: Get the Rx buffer current queued data bytes | |
1695 | * Syntax: | |
1696 | * int MoxaPortRxQueue(int port); | |
1697 | * int port : port number (0 - 127) | |
1698 | * | |
1699 | * return: .. : Rx buffer current queued data bytes | |
1700 | * | |
1701 | * | |
1da177e4 LT |
1702 | * Function 28: Disable port data transmission. |
1703 | * Syntax: | |
1704 | * void MoxaPortTxDisable(int port); | |
1705 | * int port : port number (0 - 127) | |
1706 | * | |
1707 | * | |
1708 | * Function 29: Enable port data transmission. | |
1709 | * Syntax: | |
1710 | * void MoxaPortTxEnable(int port); | |
1711 | * int port : port number (0 - 127) | |
1712 | * | |
1713 | * | |
1da177e4 LT |
1714 | * Function 31: Get the received BREAK signal count and reset it. |
1715 | * Syntax: | |
1716 | * int MoxaPortResetBrkCnt(int port); | |
1717 | * int port : port number (0 - 127) | |
1718 | * | |
1719 | * return: 0 - .. : BREAK signal count | |
1720 | * | |
1721 | * | |
1da177e4 | 1722 | */ |
1da177e4 | 1723 | |
b4173f45 | 1724 | static void MoxaPortEnable(struct moxa_port *port) |
1da177e4 LT |
1725 | { |
1726 | void __iomem *ofsAddr; | |
eaa95a8d | 1727 | u16 lowwater = 512; |
1da177e4 | 1728 | |
b4173f45 | 1729 | ofsAddr = port->tableAddr; |
1da177e4 | 1730 | writew(lowwater, ofsAddr + Low_water); |
08d01c79 | 1731 | if (MOXA_IS_320(port->board)) |
1da177e4 | 1732 | moxafunc(ofsAddr, FC_SetBreakIrq, 0); |
eaa95a8d JS |
1733 | else |
1734 | writew(readw(ofsAddr + HostStat) | WakeupBreak, | |
1735 | ofsAddr + HostStat); | |
1da177e4 LT |
1736 | |
1737 | moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); | |
1738 | moxafunc(ofsAddr, FC_FlushQueue, 2); | |
1739 | ||
1740 | moxafunc(ofsAddr, FC_EnableCH, Magic_code); | |
1741 | MoxaPortLineStatus(port); | |
1742 | } | |
1743 | ||
b4173f45 | 1744 | static void MoxaPortDisable(struct moxa_port *port) |
1da177e4 | 1745 | { |
b4173f45 | 1746 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
1747 | |
1748 | moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ | |
1749 | moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); | |
1750 | writew(0, ofsAddr + HostStat); | |
1751 | moxafunc(ofsAddr, FC_DisableCH, Magic_code); | |
1752 | } | |
1753 | ||
08d01c79 | 1754 | static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) |
1da177e4 | 1755 | { |
08d01c79 JS |
1756 | void __iomem *ofsAddr = port->tableAddr; |
1757 | unsigned int clock, val; | |
1758 | speed_t max; | |
1da177e4 | 1759 | |
08d01c79 JS |
1760 | max = MOXA_IS_320(port->board) ? 460800 : 921600; |
1761 | if (baud < 50) | |
eaa95a8d | 1762 | return 0; |
1da177e4 LT |
1763 | if (baud > max) |
1764 | baud = max; | |
08d01c79 | 1765 | clock = 921600; |
1da177e4 LT |
1766 | val = clock / baud; |
1767 | moxafunc(ofsAddr, FC_SetBaud, val); | |
1768 | baud = clock / val; | |
eaa95a8d | 1769 | return baud; |
1da177e4 LT |
1770 | } |
1771 | ||
b4173f45 JS |
1772 | static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, |
1773 | speed_t baud) | |
1da177e4 LT |
1774 | { |
1775 | void __iomem *ofsAddr; | |
1776 | tcflag_t cflag; | |
1da177e4 LT |
1777 | tcflag_t mode = 0; |
1778 | ||
b4173f45 | 1779 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1780 | cflag = termio->c_cflag; /* termio->c_cflag */ |
1781 | ||
1782 | mode = termio->c_cflag & CSIZE; | |
1783 | if (mode == CS5) | |
1784 | mode = MX_CS5; | |
1785 | else if (mode == CS6) | |
1786 | mode = MX_CS6; | |
1787 | else if (mode == CS7) | |
1788 | mode = MX_CS7; | |
1789 | else if (mode == CS8) | |
1790 | mode = MX_CS8; | |
1791 | ||
1792 | if (termio->c_cflag & CSTOPB) { | |
1793 | if (mode == MX_CS5) | |
1794 | mode |= MX_STOP15; | |
1795 | else | |
1796 | mode |= MX_STOP2; | |
1797 | } else | |
1798 | mode |= MX_STOP1; | |
1799 | ||
1800 | if (termio->c_cflag & PARENB) { | |
1801 | if (termio->c_cflag & PARODD) | |
1802 | mode |= MX_PARODD; | |
1803 | else | |
1804 | mode |= MX_PAREVEN; | |
1805 | } else | |
1806 | mode |= MX_PARNONE; | |
1807 | ||
eaa95a8d | 1808 | moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); |
1da177e4 | 1809 | |
08d01c79 JS |
1810 | if (MOXA_IS_320(port->board) && baud >= 921600) |
1811 | return -1; | |
1812 | ||
db1acaa6 | 1813 | baud = MoxaPortSetBaud(port, baud); |
1da177e4 LT |
1814 | |
1815 | if (termio->c_iflag & (IXON | IXOFF | IXANY)) { | |
f5c5a36d | 1816 | spin_lock_irq(&moxafunc_lock); |
1da177e4 LT |
1817 | writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); |
1818 | writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); | |
1819 | writeb(FC_SetXonXoff, ofsAddr + FuncCode); | |
6f56b658 | 1820 | moxa_wait_finish(ofsAddr); |
a808ac0c | 1821 | spin_unlock_irq(&moxafunc_lock); |
1da177e4 LT |
1822 | |
1823 | } | |
eaa95a8d | 1824 | return baud; |
1da177e4 LT |
1825 | } |
1826 | ||
b4173f45 JS |
1827 | static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, |
1828 | int *rtsState) | |
1da177e4 | 1829 | { |
b4173f45 JS |
1830 | if (dtrState) |
1831 | *dtrState = !!(port->lineCtrl & DTR_ON); | |
1832 | if (rtsState) | |
1833 | *rtsState = !!(port->lineCtrl & RTS_ON); | |
1834 | ||
eaa95a8d | 1835 | return 0; |
1da177e4 LT |
1836 | } |
1837 | ||
b4173f45 | 1838 | static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) |
1da177e4 | 1839 | { |
eaa95a8d | 1840 | u8 mode = 0; |
1da177e4 | 1841 | |
1da177e4 LT |
1842 | if (dtr) |
1843 | mode |= DTR_ON; | |
1844 | if (rts) | |
1845 | mode |= RTS_ON; | |
b4173f45 JS |
1846 | port->lineCtrl = mode; |
1847 | moxafunc(port->tableAddr, FC_LineControl, mode); | |
1da177e4 LT |
1848 | } |
1849 | ||
b4173f45 JS |
1850 | static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, |
1851 | int txflow, int rxflow, int txany) | |
1da177e4 | 1852 | { |
b4173f45 | 1853 | int mode = 0; |
1da177e4 | 1854 | |
1da177e4 LT |
1855 | if (rts) |
1856 | mode |= RTS_FlowCtl; | |
1857 | if (cts) | |
1858 | mode |= CTS_FlowCtl; | |
1859 | if (txflow) | |
1860 | mode |= Tx_FlowCtl; | |
1861 | if (rxflow) | |
1862 | mode |= Rx_FlowCtl; | |
1863 | if (txany) | |
1864 | mode |= IXM_IXANY; | |
b4173f45 | 1865 | moxafunc(port->tableAddr, FC_SetFlowCtl, mode); |
1da177e4 LT |
1866 | } |
1867 | ||
b4173f45 | 1868 | static int MoxaPortLineStatus(struct moxa_port *port) |
1da177e4 LT |
1869 | { |
1870 | void __iomem *ofsAddr; | |
1871 | int val; | |
1872 | ||
b4173f45 | 1873 | ofsAddr = port->tableAddr; |
f5c5a36d AC |
1874 | if (MOXA_IS_320(port->board)) |
1875 | val = moxafuncret(ofsAddr, FC_LineStatus, 0); | |
1876 | else | |
1da177e4 | 1877 | val = readw(ofsAddr + FlagStat) >> 4; |
1da177e4 | 1878 | val &= 0x0B; |
7bcf97d1 | 1879 | if (val & 8) |
1da177e4 | 1880 | val |= 4; |
a8f5cda0 | 1881 | spin_lock_bh(&moxa_lock); |
7bcf97d1 | 1882 | moxa_new_dcdstate(port, val & 8); |
a8f5cda0 | 1883 | spin_unlock_bh(&moxa_lock); |
1da177e4 | 1884 | val &= 7; |
7bcf97d1 | 1885 | return val; |
1da177e4 LT |
1886 | } |
1887 | ||
d450b5a0 | 1888 | static int MoxaPortWriteData(struct tty_struct *tty, |
2108eba5 | 1889 | const unsigned char *buffer, int len) |
1da177e4 | 1890 | { |
d450b5a0 | 1891 | struct moxa_port *port = tty->driver_data; |
1da177e4 | 1892 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
1893 | unsigned int c, total; |
1894 | u16 head, tail, tx_mask, spage, epage; | |
1895 | u16 pageno, pageofs, bufhead; | |
1da177e4 | 1896 | |
b4173f45 JS |
1897 | ofsAddr = port->tableAddr; |
1898 | baseAddr = port->board->basemem; | |
1da177e4 LT |
1899 | tx_mask = readw(ofsAddr + TX_mask); |
1900 | spage = readw(ofsAddr + Page_txb); | |
1901 | epage = readw(ofsAddr + EndPage_txb); | |
1902 | tail = readw(ofsAddr + TXwptr); | |
1903 | head = readw(ofsAddr + TXrptr); | |
2108eba5 | 1904 | c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); |
1da177e4 LT |
1905 | if (c > len) |
1906 | c = len; | |
9de6a51f | 1907 | moxaLog.txcnt[port->port.tty->index] += c; |
1da177e4 LT |
1908 | total = c; |
1909 | if (spage == epage) { | |
1910 | bufhead = readw(ofsAddr + Ofs_txb); | |
1911 | writew(spage, baseAddr + Control_reg); | |
1912 | while (c > 0) { | |
1913 | if (head > tail) | |
1914 | len = head - tail - 1; | |
1915 | else | |
1916 | len = tx_mask + 1 - tail; | |
1917 | len = (c > len) ? len : c; | |
1918 | ofs = baseAddr + DynPage_addr + bufhead + tail; | |
2108eba5 JS |
1919 | memcpy_toio(ofs, buffer, len); |
1920 | buffer += len; | |
1da177e4 LT |
1921 | tail = (tail + len) & tx_mask; |
1922 | c -= len; | |
1923 | } | |
1da177e4 | 1924 | } else { |
1da177e4 LT |
1925 | pageno = spage + (tail >> 13); |
1926 | pageofs = tail & Page_mask; | |
2108eba5 JS |
1927 | while (c > 0) { |
1928 | len = Page_size - pageofs; | |
1929 | if (len > c) | |
1930 | len = c; | |
1da177e4 LT |
1931 | writeb(pageno, baseAddr + Control_reg); |
1932 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
1933 | memcpy_toio(ofs, buffer, len); |
1934 | buffer += len; | |
1da177e4 LT |
1935 | if (++pageno == epage) |
1936 | pageno = spage; | |
1937 | pageofs = 0; | |
2108eba5 JS |
1938 | c -= len; |
1939 | } | |
1940 | tail = (tail + total) & tx_mask; | |
1da177e4 | 1941 | } |
2108eba5 | 1942 | writew(tail, ofsAddr + TXwptr); |
1da177e4 | 1943 | writeb(1, ofsAddr + CD180TXirq); /* start to send */ |
2108eba5 | 1944 | return total; |
1da177e4 LT |
1945 | } |
1946 | ||
7bcf97d1 | 1947 | static int MoxaPortReadData(struct moxa_port *port) |
1da177e4 | 1948 | { |
9de6a51f | 1949 | struct tty_struct *tty = port->port.tty; |
2108eba5 | 1950 | unsigned char *dst; |
1da177e4 | 1951 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
1952 | unsigned int count, len, total; |
1953 | u16 tail, rx_mask, spage, epage; | |
1954 | u16 pageno, pageofs, bufhead, head; | |
1da177e4 | 1955 | |
b4173f45 JS |
1956 | ofsAddr = port->tableAddr; |
1957 | baseAddr = port->board->basemem; | |
1da177e4 LT |
1958 | head = readw(ofsAddr + RXrptr); |
1959 | tail = readw(ofsAddr + RXwptr); | |
1960 | rx_mask = readw(ofsAddr + RX_mask); | |
1961 | spage = readw(ofsAddr + Page_rxb); | |
1962 | epage = readw(ofsAddr + EndPage_rxb); | |
2108eba5 | 1963 | count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); |
1da177e4 | 1964 | if (count == 0) |
33f0f88f | 1965 | return 0; |
1da177e4 | 1966 | |
33f0f88f | 1967 | total = count; |
7bcf97d1 | 1968 | moxaLog.rxcnt[tty->index] += total; |
1da177e4 LT |
1969 | if (spage == epage) { |
1970 | bufhead = readw(ofsAddr + Ofs_rxb); | |
1971 | writew(spage, baseAddr + Control_reg); | |
1972 | while (count > 0) { | |
1da177e4 | 1973 | ofs = baseAddr + DynPage_addr + bufhead + head; |
2108eba5 JS |
1974 | len = (tail >= head) ? (tail - head) : |
1975 | (rx_mask + 1 - head); | |
1976 | len = tty_prepare_flip_string(tty, &dst, | |
1977 | min(len, count)); | |
1978 | memcpy_fromio(dst, ofs, len); | |
1da177e4 LT |
1979 | head = (head + len) & rx_mask; |
1980 | count -= len; | |
1981 | } | |
1da177e4 | 1982 | } else { |
1da177e4 LT |
1983 | pageno = spage + (head >> 13); |
1984 | pageofs = head & Page_mask; | |
2108eba5 | 1985 | while (count > 0) { |
1da177e4 LT |
1986 | writew(pageno, baseAddr + Control_reg); |
1987 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
1988 | len = tty_prepare_flip_string(tty, &dst, |
1989 | min(Page_size - pageofs, count)); | |
1990 | memcpy_fromio(dst, ofs, len); | |
1991 | ||
1992 | count -= len; | |
1993 | pageofs = (pageofs + len) & Page_mask; | |
1994 | if (pageofs == 0 && ++pageno == epage) | |
1da177e4 | 1995 | pageno = spage; |
2108eba5 JS |
1996 | } |
1997 | head = (head + total) & rx_mask; | |
1da177e4 | 1998 | } |
2108eba5 JS |
1999 | writew(head, ofsAddr + RXrptr); |
2000 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
1da177e4 | 2001 | moxaLowWaterChk = 1; |
b4173f45 | 2002 | port->lowChkFlag = 1; |
1da177e4 | 2003 | } |
2108eba5 | 2004 | return total; |
1da177e4 LT |
2005 | } |
2006 | ||
2007 | ||
b4173f45 | 2008 | static int MoxaPortTxQueue(struct moxa_port *port) |
1da177e4 | 2009 | { |
b4173f45 | 2010 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2011 | u16 rptr, wptr, mask; |
1da177e4 | 2012 | |
1da177e4 LT |
2013 | rptr = readw(ofsAddr + TXrptr); |
2014 | wptr = readw(ofsAddr + TXwptr); | |
2015 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2016 | return (wptr - rptr) & mask; |
1da177e4 LT |
2017 | } |
2018 | ||
b4173f45 | 2019 | static int MoxaPortTxFree(struct moxa_port *port) |
1da177e4 | 2020 | { |
b4173f45 | 2021 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2022 | u16 rptr, wptr, mask; |
1da177e4 | 2023 | |
1da177e4 LT |
2024 | rptr = readw(ofsAddr + TXrptr); |
2025 | wptr = readw(ofsAddr + TXwptr); | |
2026 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2027 | return mask - ((wptr - rptr) & mask); |
1da177e4 LT |
2028 | } |
2029 | ||
b4173f45 | 2030 | static int MoxaPortRxQueue(struct moxa_port *port) |
1da177e4 | 2031 | { |
b4173f45 | 2032 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2033 | u16 rptr, wptr, mask; |
1da177e4 | 2034 | |
1da177e4 LT |
2035 | rptr = readw(ofsAddr + RXrptr); |
2036 | wptr = readw(ofsAddr + RXwptr); | |
2037 | mask = readw(ofsAddr + RX_mask); | |
2108eba5 | 2038 | return (wptr - rptr) & mask; |
1da177e4 LT |
2039 | } |
2040 | ||
b4173f45 | 2041 | static void MoxaPortTxDisable(struct moxa_port *port) |
1da177e4 | 2042 | { |
b4173f45 | 2043 | moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); |
1da177e4 LT |
2044 | } |
2045 | ||
b4173f45 | 2046 | static void MoxaPortTxEnable(struct moxa_port *port) |
1da177e4 | 2047 | { |
b4173f45 | 2048 | moxafunc(port->tableAddr, FC_SetXonState, Magic_code); |
1da177e4 LT |
2049 | } |
2050 | ||
8f8ecbad | 2051 | static int moxa_get_serial_info(struct moxa_port *info, |
eaa95a8d | 2052 | struct serial_struct __user *retinfo) |
1da177e4 | 2053 | { |
eaa95a8d JS |
2054 | struct serial_struct tmp = { |
2055 | .type = info->type, | |
9de6a51f AC |
2056 | .line = info->port.tty->index, |
2057 | .flags = info->port.flags, | |
eaa95a8d | 2058 | .baud_base = 921600, |
44b7d1b3 | 2059 | .close_delay = info->port.close_delay |
eaa95a8d JS |
2060 | }; |
2061 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; | |
1da177e4 LT |
2062 | } |
2063 | ||
2064 | ||
8f8ecbad | 2065 | static int moxa_set_serial_info(struct moxa_port *info, |
eaa95a8d | 2066 | struct serial_struct __user *new_info) |
1da177e4 LT |
2067 | { |
2068 | struct serial_struct new_serial; | |
2069 | ||
eaa95a8d | 2070 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
1da177e4 LT |
2071 | return -EFAULT; |
2072 | ||
eaa95a8d JS |
2073 | if (new_serial.irq != 0 || new_serial.port != 0 || |
2074 | new_serial.custom_divisor != 0 || | |
2075 | new_serial.baud_base != 921600) | |
2076 | return -EPERM; | |
1da177e4 LT |
2077 | |
2078 | if (!capable(CAP_SYS_ADMIN)) { | |
2079 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
9de6a51f | 2080 | (info->port.flags & ~ASYNC_USR_MASK))) |
eaa95a8d JS |
2081 | return -EPERM; |
2082 | } else | |
44b7d1b3 | 2083 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
1da177e4 LT |
2084 | |
2085 | new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); | |
9de6a51f | 2086 | new_serial.flags |= (info->port.flags & ASYNC_FLAGS); |
1da177e4 | 2087 | |
eaa95a8d | 2088 | MoxaSetFifo(info, new_serial.type == PORT_16550A); |
1da177e4 LT |
2089 | |
2090 | info->type = new_serial.type; | |
eaa95a8d | 2091 | return 0; |
1da177e4 LT |
2092 | } |
2093 | ||
2094 | ||
2095 | ||
2096 | /***************************************************************************** | |
2097 | * Static local functions: * | |
2098 | *****************************************************************************/ | |
1da177e4 | 2099 | |
b4173f45 | 2100 | static void MoxaSetFifo(struct moxa_port *port, int enable) |
1da177e4 | 2101 | { |
b4173f45 | 2102 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
2103 | |
2104 | if (!enable) { | |
2105 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); | |
2106 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); | |
2107 | } else { | |
2108 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); | |
2109 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); | |
2110 | } | |
2111 | } |