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Commit | Line | Data |
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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> | |
37 | #include <linux/string.h> | |
38 | #include <linux/fcntl.h> | |
39 | #include <linux/ptrace.h> | |
40 | #include <linux/serial.h> | |
41 | #include <linux/tty_driver.h> | |
42 | #include <linux/delay.h> | |
43 | #include <linux/pci.h> | |
44 | #include <linux/init.h> | |
45 | #include <linux/bitops.h> | |
46 | ||
47 | #include <asm/system.h> | |
48 | #include <asm/io.h> | |
49 | #include <asm/uaccess.h> | |
50 | ||
03718234 JS |
51 | #include "moxa.h" |
52 | ||
b9705b60 | 53 | #define MOXA_VERSION "6.0k" |
1da177e4 | 54 | |
03718234 JS |
55 | #define MOXA_FW_HDRLEN 32 |
56 | ||
11324edd | 57 | #define MOXAMAJOR 172 |
1da177e4 | 58 | |
11324edd | 59 | #define MAX_BOARDS 4 /* Don't change this value */ |
1da177e4 | 60 | #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ |
11324edd | 61 | #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) |
1da177e4 | 62 | |
08d01c79 JS |
63 | #define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ |
64 | (brd)->boardType == MOXA_BOARD_C320_PCI) | |
65 | ||
1da177e4 LT |
66 | /* |
67 | * Define the Moxa PCI vendor and device IDs. | |
68 | */ | |
11324edd JS |
69 | #define MOXA_BUS_TYPE_ISA 0 |
70 | #define MOXA_BUS_TYPE_PCI 1 | |
1da177e4 | 71 | |
1da177e4 LT |
72 | enum { |
73 | MOXA_BOARD_C218_PCI = 1, | |
74 | MOXA_BOARD_C218_ISA, | |
75 | MOXA_BOARD_C320_PCI, | |
76 | MOXA_BOARD_C320_ISA, | |
77 | MOXA_BOARD_CP204J, | |
78 | }; | |
79 | ||
80 | static char *moxa_brdname[] = | |
81 | { | |
82 | "C218 Turbo PCI series", | |
83 | "C218 Turbo ISA series", | |
84 | "C320 Turbo PCI series", | |
85 | "C320 Turbo ISA series", | |
86 | "CP-204J series", | |
87 | }; | |
88 | ||
89 | #ifdef CONFIG_PCI | |
90 | static struct pci_device_id moxa_pcibrds[] = { | |
5ebb4078 JS |
91 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), |
92 | .driver_data = MOXA_BOARD_C218_PCI }, | |
93 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), | |
94 | .driver_data = MOXA_BOARD_C320_PCI }, | |
95 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), | |
96 | .driver_data = MOXA_BOARD_CP204J }, | |
1da177e4 LT |
97 | { 0 } |
98 | }; | |
99 | MODULE_DEVICE_TABLE(pci, moxa_pcibrds); | |
100 | #endif /* CONFIG_PCI */ | |
101 | ||
03718234 JS |
102 | struct moxa_port; |
103 | ||
8f8ecbad | 104 | static struct moxa_board_conf { |
1da177e4 LT |
105 | int boardType; |
106 | int numPorts; | |
1da177e4 | 107 | int busType; |
8f8ecbad | 108 | |
810ab09b | 109 | unsigned int ready; |
8f8ecbad | 110 | |
03718234 JS |
111 | struct moxa_port *ports; |
112 | ||
8f8ecbad JS |
113 | void __iomem *basemem; |
114 | void __iomem *intNdx; | |
115 | void __iomem *intPend; | |
116 | void __iomem *intTable; | |
117 | } moxa_boards[MAX_BOARDS]; | |
118 | ||
119 | struct mxser_mstatus { | |
120 | tcflag_t cflag; | |
121 | int cts; | |
122 | int dsr; | |
123 | int ri; | |
124 | int dcd; | |
9dff89cd | 125 | }; |
1da177e4 | 126 | |
8f8ecbad JS |
127 | struct moxaq_str { |
128 | int inq; | |
129 | int outq; | |
130 | }; | |
1da177e4 | 131 | |
8f8ecbad | 132 | struct moxa_port { |
9de6a51f | 133 | struct tty_port port; |
b4173f45 | 134 | struct moxa_board_conf *board; |
7bcf97d1 JS |
135 | void __iomem *tableAddr; |
136 | ||
1da177e4 | 137 | int type; |
1da177e4 | 138 | int cflag; |
7bcf97d1 | 139 | unsigned long statusflags; |
1da177e4 | 140 | |
8482bcd5 | 141 | u8 DCDState; /* Protected by the port lock */ |
7bcf97d1 JS |
142 | u8 lineCtrl; |
143 | u8 lowChkFlag; | |
8f8ecbad | 144 | }; |
1da177e4 | 145 | |
74d7d97b JS |
146 | struct mon_str { |
147 | int tick; | |
148 | int rxcnt[MAX_PORTS]; | |
149 | int txcnt[MAX_PORTS]; | |
150 | }; | |
151 | ||
1da177e4 | 152 | /* statusflags */ |
a808ac0c AC |
153 | #define TXSTOPPED 1 |
154 | #define LOWWAIT 2 | |
155 | #define EMPTYWAIT 3 | |
1da177e4 | 156 | |
1da177e4 LT |
157 | #define SERIAL_DO_RESTART |
158 | ||
1da177e4 LT |
159 | #define WAKEUP_CHARS 256 |
160 | ||
1da177e4 | 161 | static int ttymajor = MOXAMAJOR; |
74d7d97b JS |
162 | static struct mon_str moxaLog; |
163 | static unsigned int moxaFuncTout = HZ / 2; | |
7bcf97d1 | 164 | static unsigned int moxaLowWaterChk; |
a8f5cda0 | 165 | static DEFINE_MUTEX(moxa_openlock); |
e8c62103 | 166 | static DEFINE_SPINLOCK(moxa_lock); |
c6fc826e | 167 | |
d353eca4 JS |
168 | static unsigned long baseaddr[MAX_BOARDS]; |
169 | static unsigned int type[MAX_BOARDS]; | |
170 | static unsigned int numports[MAX_BOARDS]; | |
1da177e4 LT |
171 | |
172 | MODULE_AUTHOR("William Chen"); | |
173 | MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); | |
174 | MODULE_LICENSE("GPL"); | |
e6c4ef98 BH |
175 | MODULE_FIRMWARE("c218tunx.cod"); |
176 | MODULE_FIRMWARE("cp204unx.cod"); | |
177 | MODULE_FIRMWARE("c320tunx.cod"); | |
c6fc826e | 178 | |
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)"); | |
c6fc826e | 185 | |
1da177e4 | 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 *); | |
606d099c | 197 | static void moxa_set_termios(struct tty_struct *, struct ktermios *); |
1da177e4 LT |
198 | static void moxa_stop(struct tty_struct *); |
199 | static void moxa_start(struct tty_struct *); | |
200 | static void moxa_hangup(struct tty_struct *); | |
201 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file); | |
202 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
203 | unsigned int set, unsigned int clear); | |
204 | static void moxa_poll(unsigned long); | |
db1acaa6 | 205 | static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); |
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 | ||
318 | for (i = 0; i < MAX_BOARDS; i++) { | |
319 | p = moxa_boards[i].ports; | |
320 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
321 | memset(&tmp, 0, sizeof(tmp)); | |
e8c62103 | 322 | spin_lock_bh(&moxa_lock); |
74d7d97b JS |
323 | if (moxa_boards[i].ready) { |
324 | tmp.inq = MoxaPortRxQueue(p); | |
325 | tmp.outq = MoxaPortTxQueue(p); | |
326 | } | |
e8c62103 AC |
327 | spin_unlock_bh(&moxa_lock); |
328 | if (copy_to_user(argm, &tmp, sizeof(tmp))) | |
74d7d97b JS |
329 | return -EFAULT; |
330 | } | |
331 | } | |
a8f5cda0 | 332 | break; |
74d7d97b JS |
333 | } case MOXA_GET_OQUEUE: |
334 | status = MoxaPortTxQueue(ch); | |
a8f5cda0 JS |
335 | ret = put_user(status, (unsigned long __user *)argp); |
336 | break; | |
74d7d97b JS |
337 | case MOXA_GET_IQUEUE: |
338 | status = MoxaPortRxQueue(ch); | |
a8f5cda0 JS |
339 | ret = put_user(status, (unsigned long __user *)argp); |
340 | break; | |
74d7d97b JS |
341 | case MOXA_GETMSTATUS: { |
342 | struct mxser_mstatus __user *argm = argp; | |
343 | struct mxser_mstatus tmp; | |
344 | struct moxa_port *p; | |
345 | unsigned int i, j; | |
346 | ||
347 | for (i = 0; i < MAX_BOARDS; i++) { | |
348 | p = moxa_boards[i].ports; | |
349 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
d450b5a0 | 350 | struct tty_struct *ttyp; |
74d7d97b | 351 | memset(&tmp, 0, sizeof(tmp)); |
e8c62103 AC |
352 | spin_lock_bh(&moxa_lock); |
353 | if (!moxa_boards[i].ready) { | |
354 | spin_unlock_bh(&moxa_lock); | |
74d7d97b | 355 | goto copy; |
e8c62103 | 356 | } |
74d7d97b JS |
357 | |
358 | status = MoxaPortLineStatus(p); | |
e8c62103 AC |
359 | spin_unlock_bh(&moxa_lock); |
360 | ||
74d7d97b JS |
361 | if (status & 1) |
362 | tmp.cts = 1; | |
363 | if (status & 2) | |
364 | tmp.dsr = 1; | |
365 | if (status & 4) | |
366 | tmp.dcd = 1; | |
367 | ||
d450b5a0 AC |
368 | ttyp = tty_port_tty_get(&p->port); |
369 | if (!ttyp || !ttyp->termios) | |
74d7d97b JS |
370 | tmp.cflag = p->cflag; |
371 | else | |
d450b5a0 AC |
372 | tmp.cflag = ttyp->termios->c_cflag; |
373 | tty_kref_put(tty); | |
74d7d97b | 374 | copy: |
e8c62103 | 375 | if (copy_to_user(argm, &tmp, sizeof(tmp))) |
74d7d97b JS |
376 | return -EFAULT; |
377 | } | |
378 | } | |
a8f5cda0 | 379 | break; |
74d7d97b JS |
380 | } |
381 | case TIOCGSERIAL: | |
a808ac0c | 382 | mutex_lock(&ch->port.mutex); |
a8f5cda0 | 383 | ret = moxa_get_serial_info(ch, argp); |
a808ac0c | 384 | mutex_unlock(&ch->port.mutex); |
a8f5cda0 | 385 | break; |
74d7d97b | 386 | case TIOCSSERIAL: |
a808ac0c | 387 | mutex_lock(&ch->port.mutex); |
a8f5cda0 | 388 | ret = moxa_set_serial_info(ch, argp); |
a808ac0c | 389 | mutex_unlock(&ch->port.mutex); |
a8f5cda0 JS |
390 | break; |
391 | default: | |
392 | ret = -ENOIOCTLCMD; | |
74d7d97b | 393 | } |
a8f5cda0 | 394 | return ret; |
74d7d97b JS |
395 | } |
396 | ||
9e98966c | 397 | static int moxa_break_ctl(struct tty_struct *tty, int state) |
74d7d97b JS |
398 | { |
399 | struct moxa_port *port = tty->driver_data; | |
400 | ||
401 | moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, | |
402 | Magic_code); | |
9e98966c | 403 | return 0; |
74d7d97b JS |
404 | } |
405 | ||
b68e31d0 | 406 | static const struct tty_operations moxa_ops = { |
1da177e4 LT |
407 | .open = moxa_open, |
408 | .close = moxa_close, | |
409 | .write = moxa_write, | |
410 | .write_room = moxa_write_room, | |
411 | .flush_buffer = moxa_flush_buffer, | |
412 | .chars_in_buffer = moxa_chars_in_buffer, | |
1da177e4 | 413 | .ioctl = moxa_ioctl, |
1da177e4 LT |
414 | .set_termios = moxa_set_termios, |
415 | .stop = moxa_stop, | |
416 | .start = moxa_start, | |
417 | .hangup = moxa_hangup, | |
74d7d97b | 418 | .break_ctl = moxa_break_ctl, |
1da177e4 LT |
419 | .tiocmget = moxa_tiocmget, |
420 | .tiocmset = moxa_tiocmset, | |
421 | }; | |
422 | ||
31f35939 AC |
423 | static const struct tty_port_operations moxa_port_ops = { |
424 | .carrier_raised = moxa_carrier_raised, | |
f176178b AC |
425 | .dtr_rts = moxa_dtr_rts, |
426 | .shutdown = moxa_shutdown, | |
31f35939 AC |
427 | }; |
428 | ||
aa7e5221 | 429 | static struct tty_driver *moxaDriver; |
aa7e5221 | 430 | static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); |
33f0f88f | 431 | |
74d7d97b JS |
432 | /* |
433 | * HW init | |
434 | */ | |
435 | ||
03718234 JS |
436 | static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) |
437 | { | |
438 | switch (brd->boardType) { | |
439 | case MOXA_BOARD_C218_ISA: | |
440 | case MOXA_BOARD_C218_PCI: | |
441 | if (model != 1) | |
442 | goto err; | |
443 | break; | |
444 | case MOXA_BOARD_CP204J: | |
445 | if (model != 3) | |
446 | goto err; | |
447 | break; | |
448 | default: | |
449 | if (model != 2) | |
450 | goto err; | |
451 | break; | |
452 | } | |
453 | return 0; | |
454 | err: | |
455 | return -EINVAL; | |
456 | } | |
457 | ||
458 | static int moxa_check_fw(const void *ptr) | |
459 | { | |
460 | const __le16 *lptr = ptr; | |
461 | ||
462 | if (*lptr != cpu_to_le16(0x7980)) | |
463 | return -EINVAL; | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, | |
469 | size_t len) | |
470 | { | |
471 | void __iomem *baseAddr = brd->basemem; | |
472 | u16 tmp; | |
473 | ||
474 | writeb(HW_reset, baseAddr + Control_reg); /* reset */ | |
475 | msleep(10); | |
476 | memset_io(baseAddr, 0, 4096); | |
477 | memcpy_toio(baseAddr, buf, len); /* download BIOS */ | |
478 | writeb(0, baseAddr + Control_reg); /* restart */ | |
479 | ||
480 | msleep(2000); | |
481 | ||
482 | switch (brd->boardType) { | |
483 | case MOXA_BOARD_C218_ISA: | |
484 | case MOXA_BOARD_C218_PCI: | |
485 | tmp = readw(baseAddr + C218_key); | |
486 | if (tmp != C218_KeyCode) | |
487 | goto err; | |
488 | break; | |
489 | case MOXA_BOARD_CP204J: | |
490 | tmp = readw(baseAddr + C218_key); | |
491 | if (tmp != CP204J_KeyCode) | |
492 | goto err; | |
493 | break; | |
494 | default: | |
495 | tmp = readw(baseAddr + C320_key); | |
496 | if (tmp != C320_KeyCode) | |
497 | goto err; | |
498 | tmp = readw(baseAddr + C320_status); | |
499 | if (tmp != STS_init) { | |
eaa95a8d | 500 | printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " |
03718234 JS |
501 | "module not found\n"); |
502 | return -EIO; | |
503 | } | |
504 | break; | |
505 | } | |
506 | ||
507 | return 0; | |
508 | err: | |
eaa95a8d | 509 | printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); |
03718234 JS |
510 | return -EIO; |
511 | } | |
512 | ||
513 | static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, | |
514 | size_t len) | |
515 | { | |
516 | void __iomem *baseAddr = brd->basemem; | |
517 | ||
518 | if (len < 7168) { | |
eaa95a8d | 519 | printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); |
03718234 JS |
520 | return -EINVAL; |
521 | } | |
522 | ||
523 | writew(len - 7168 - 2, baseAddr + C320bapi_len); | |
524 | writeb(1, baseAddr + Control_reg); /* Select Page 1 */ | |
525 | memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); | |
526 | writeb(2, baseAddr + Control_reg); /* Select Page 2 */ | |
527 | memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); | |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
5292bcd3 | 532 | static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, |
03718234 JS |
533 | size_t len) |
534 | { | |
535 | void __iomem *baseAddr = brd->basemem; | |
b46f69cd | 536 | const __le16 *uptr = ptr; |
03718234 | 537 | size_t wlen, len2, j; |
5292bcd3 | 538 | unsigned long key, loadbuf, loadlen, checksum, checksum_ok; |
08d01c79 | 539 | unsigned int i, retry; |
03718234 JS |
540 | u16 usum, keycode; |
541 | ||
5292bcd3 JS |
542 | keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : |
543 | C218_KeyCode; | |
03718234 | 544 | |
5292bcd3 JS |
545 | switch (brd->boardType) { |
546 | case MOXA_BOARD_CP204J: | |
547 | case MOXA_BOARD_C218_ISA: | |
548 | case MOXA_BOARD_C218_PCI: | |
549 | key = C218_key; | |
550 | loadbuf = C218_LoadBuf; | |
551 | loadlen = C218DLoad_len; | |
552 | checksum = C218check_sum; | |
553 | checksum_ok = C218chksum_ok; | |
554 | break; | |
555 | default: | |
556 | key = C320_key; | |
557 | keycode = C320_KeyCode; | |
558 | loadbuf = C320_LoadBuf; | |
559 | loadlen = C320DLoad_len; | |
560 | checksum = C320check_sum; | |
561 | checksum_ok = C320chksum_ok; | |
562 | break; | |
03718234 | 563 | } |
03718234 JS |
564 | |
565 | usum = 0; | |
566 | wlen = len >> 1; | |
567 | for (i = 0; i < wlen; i++) | |
568 | usum += le16_to_cpu(uptr[i]); | |
569 | retry = 0; | |
570 | do { | |
571 | wlen = len >> 1; | |
572 | j = 0; | |
573 | while (wlen) { | |
574 | len2 = (wlen > 2048) ? 2048 : wlen; | |
575 | wlen -= len2; | |
5292bcd3 | 576 | memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); |
03718234 | 577 | j += len2 << 1; |
5292bcd3 JS |
578 | |
579 | writew(len2, baseAddr + loadlen); | |
580 | writew(0, baseAddr + key); | |
581 | for (i = 0; i < 100; i++) { | |
582 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
583 | break; |
584 | msleep(10); | |
585 | } | |
5292bcd3 | 586 | if (readw(baseAddr + key) != keycode) |
03718234 JS |
587 | return -EIO; |
588 | } | |
5292bcd3 JS |
589 | writew(0, baseAddr + loadlen); |
590 | writew(usum, baseAddr + checksum); | |
591 | writew(0, baseAddr + key); | |
592 | for (i = 0; i < 100; i++) { | |
593 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
594 | break; |
595 | msleep(10); | |
596 | } | |
597 | retry++; | |
5292bcd3 JS |
598 | } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); |
599 | if (readb(baseAddr + checksum_ok) != 1) | |
03718234 JS |
600 | return -EIO; |
601 | ||
5292bcd3 | 602 | writew(0, baseAddr + key); |
03718234 JS |
603 | for (i = 0; i < 600; i++) { |
604 | if (readw(baseAddr + Magic_no) == Magic_code) | |
605 | break; | |
606 | msleep(10); | |
607 | } | |
608 | if (readw(baseAddr + Magic_no) != Magic_code) | |
609 | return -EIO; | |
610 | ||
08d01c79 | 611 | if (MOXA_IS_320(brd)) { |
5292bcd3 JS |
612 | if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ |
613 | writew(0x3800, baseAddr + TMS320_PORT1); | |
614 | writew(0x3900, baseAddr + TMS320_PORT2); | |
615 | writew(28499, baseAddr + TMS320_CLOCK); | |
616 | } else { | |
617 | writew(0x3200, baseAddr + TMS320_PORT1); | |
618 | writew(0x3400, baseAddr + TMS320_PORT2); | |
619 | writew(19999, baseAddr + TMS320_CLOCK); | |
620 | } | |
03718234 JS |
621 | } |
622 | writew(1, baseAddr + Disable_IRQ); | |
623 | writew(0, baseAddr + Magic_no); | |
624 | for (i = 0; i < 500; i++) { | |
625 | if (readw(baseAddr + Magic_no) == Magic_code) | |
626 | break; | |
627 | msleep(10); | |
628 | } | |
629 | if (readw(baseAddr + Magic_no) != Magic_code) | |
630 | return -EIO; | |
631 | ||
08d01c79 | 632 | if (MOXA_IS_320(brd)) { |
5292bcd3 JS |
633 | j = readw(baseAddr + Module_cnt); |
634 | if (j <= 0) | |
635 | return -EIO; | |
636 | brd->numPorts = j * 8; | |
637 | writew(j, baseAddr + Module_no); | |
638 | writew(0, baseAddr + Magic_no); | |
639 | for (i = 0; i < 600; i++) { | |
640 | if (readw(baseAddr + Magic_no) == Magic_code) | |
641 | break; | |
642 | msleep(10); | |
643 | } | |
644 | if (readw(baseAddr + Magic_no) != Magic_code) | |
645 | return -EIO; | |
03718234 | 646 | } |
03718234 JS |
647 | brd->intNdx = baseAddr + IRQindex; |
648 | brd->intPend = baseAddr + IRQpending; | |
649 | brd->intTable = baseAddr + IRQtable; | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
654 | static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, | |
655 | size_t len) | |
656 | { | |
657 | void __iomem *ofsAddr, *baseAddr = brd->basemem; | |
658 | struct moxa_port *port; | |
659 | int retval, i; | |
660 | ||
661 | if (len % 2) { | |
eaa95a8d | 662 | printk(KERN_ERR "MOXA: bios length is not even\n"); |
03718234 JS |
663 | return -EINVAL; |
664 | } | |
665 | ||
5292bcd3 JS |
666 | retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ |
667 | if (retval) | |
668 | return retval; | |
669 | ||
03718234 JS |
670 | switch (brd->boardType) { |
671 | case MOXA_BOARD_C218_ISA: | |
672 | case MOXA_BOARD_C218_PCI: | |
673 | case MOXA_BOARD_CP204J: | |
03718234 JS |
674 | port = brd->ports; |
675 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 676 | port->board = brd; |
03718234 JS |
677 | port->DCDState = 0; |
678 | port->tableAddr = baseAddr + Extern_table + | |
679 | Extern_size * i; | |
680 | ofsAddr = port->tableAddr; | |
681 | writew(C218rx_mask, ofsAddr + RX_mask); | |
682 | writew(C218tx_mask, ofsAddr + TX_mask); | |
683 | writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); | |
684 | writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); | |
685 | ||
686 | writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); | |
687 | writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); | |
688 | ||
689 | } | |
690 | break; | |
691 | default: | |
03718234 JS |
692 | port = brd->ports; |
693 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 694 | port->board = brd; |
03718234 JS |
695 | port->DCDState = 0; |
696 | port->tableAddr = baseAddr + Extern_table + | |
697 | Extern_size * i; | |
698 | ofsAddr = port->tableAddr; | |
699 | switch (brd->numPorts) { | |
700 | case 8: | |
701 | writew(C320p8rx_mask, ofsAddr + RX_mask); | |
702 | writew(C320p8tx_mask, ofsAddr + TX_mask); | |
703 | writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); | |
704 | writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); | |
705 | writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); | |
706 | writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); | |
707 | ||
708 | break; | |
709 | case 16: | |
710 | writew(C320p16rx_mask, ofsAddr + RX_mask); | |
711 | writew(C320p16tx_mask, ofsAddr + TX_mask); | |
712 | writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); | |
713 | writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); | |
714 | writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); | |
715 | writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); | |
716 | break; | |
717 | ||
718 | case 24: | |
719 | writew(C320p24rx_mask, ofsAddr + RX_mask); | |
720 | writew(C320p24tx_mask, ofsAddr + TX_mask); | |
721 | writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); | |
722 | writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); | |
723 | writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); | |
724 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
725 | break; | |
726 | case 32: | |
727 | writew(C320p32rx_mask, ofsAddr + RX_mask); | |
728 | writew(C320p32tx_mask, ofsAddr + TX_mask); | |
729 | writew(C320p32tx_ofs, ofsAddr + Ofs_txb); | |
730 | writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); | |
731 | writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); | |
732 | writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); | |
733 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
734 | break; | |
735 | } | |
736 | } | |
737 | break; | |
738 | } | |
03718234 JS |
739 | return 0; |
740 | } | |
741 | ||
742 | static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) | |
743 | { | |
2bca76e8 | 744 | const void *ptr = fw->data; |
03718234 JS |
745 | char rsn[64]; |
746 | u16 lens[5]; | |
747 | size_t len; | |
748 | unsigned int a, lenp, lencnt; | |
749 | int ret = -EINVAL; | |
750 | struct { | |
751 | __le32 magic; /* 0x34303430 */ | |
752 | u8 reserved1[2]; | |
753 | u8 type; /* UNIX = 3 */ | |
754 | u8 model; /* C218T=1, C320T=2, CP204=3 */ | |
755 | u8 reserved2[8]; | |
756 | __le16 len[5]; | |
2bca76e8 | 757 | } const *hdr = ptr; |
03718234 JS |
758 | |
759 | BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); | |
760 | ||
761 | if (fw->size < MOXA_FW_HDRLEN) { | |
762 | strcpy(rsn, "too short (even header won't fit)"); | |
763 | goto err; | |
764 | } | |
765 | if (hdr->magic != cpu_to_le32(0x30343034)) { | |
766 | sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); | |
767 | goto err; | |
768 | } | |
769 | if (hdr->type != 3) { | |
770 | sprintf(rsn, "not for linux, type is %u", hdr->type); | |
771 | goto err; | |
772 | } | |
773 | if (moxa_check_fw_model(brd, hdr->model)) { | |
774 | sprintf(rsn, "not for this card, model is %u", hdr->model); | |
775 | goto err; | |
776 | } | |
777 | ||
778 | len = MOXA_FW_HDRLEN; | |
779 | lencnt = hdr->model == 2 ? 5 : 3; | |
780 | for (a = 0; a < ARRAY_SIZE(lens); a++) { | |
781 | lens[a] = le16_to_cpu(hdr->len[a]); | |
782 | if (lens[a] && len + lens[a] <= fw->size && | |
783 | moxa_check_fw(&fw->data[len])) | |
eaa95a8d | 784 | printk(KERN_WARNING "MOXA firmware: unexpected input " |
03718234 JS |
785 | "at offset %u, but going on\n", (u32)len); |
786 | if (!lens[a] && a < lencnt) { | |
787 | sprintf(rsn, "too few entries in fw file"); | |
788 | goto err; | |
789 | } | |
790 | len += lens[a]; | |
791 | } | |
792 | ||
793 | if (len != fw->size) { | |
794 | sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, | |
795 | (u32)len); | |
796 | goto err; | |
797 | } | |
798 | ||
799 | ptr += MOXA_FW_HDRLEN; | |
800 | lenp = 0; /* bios */ | |
801 | ||
802 | strcpy(rsn, "read above"); | |
803 | ||
804 | ret = moxa_load_bios(brd, ptr, lens[lenp]); | |
805 | if (ret) | |
806 | goto err; | |
807 | ||
808 | /* we skip the tty section (lens[1]), since we don't need it */ | |
809 | ptr += lens[lenp] + lens[lenp + 1]; | |
810 | lenp += 2; /* comm */ | |
811 | ||
812 | if (hdr->model == 2) { | |
813 | ret = moxa_load_320b(brd, ptr, lens[lenp]); | |
814 | if (ret) | |
815 | goto err; | |
816 | /* skip another tty */ | |
817 | ptr += lens[lenp] + lens[lenp + 1]; | |
818 | lenp += 2; | |
819 | } | |
820 | ||
821 | ret = moxa_load_code(brd, ptr, lens[lenp]); | |
822 | if (ret) | |
823 | goto err; | |
824 | ||
825 | return 0; | |
826 | err: | |
827 | printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); | |
828 | return ret; | |
829 | } | |
830 | ||
831 | static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) | |
832 | { | |
833 | const struct firmware *fw; | |
834 | const char *file; | |
810ab09b JS |
835 | struct moxa_port *p; |
836 | unsigned int i; | |
03718234 JS |
837 | int ret; |
838 | ||
810ab09b JS |
839 | brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), |
840 | GFP_KERNEL); | |
841 | if (brd->ports == NULL) { | |
842 | printk(KERN_ERR "cannot allocate memory for ports\n"); | |
843 | ret = -ENOMEM; | |
844 | goto err; | |
845 | } | |
846 | ||
847 | for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { | |
44b7d1b3 | 848 | tty_port_init(&p->port); |
31f35939 | 849 | p->port.ops = &moxa_port_ops; |
810ab09b | 850 | p->type = PORT_16550A; |
810ab09b | 851 | p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
810ab09b JS |
852 | } |
853 | ||
03718234 JS |
854 | switch (brd->boardType) { |
855 | case MOXA_BOARD_C218_ISA: | |
856 | case MOXA_BOARD_C218_PCI: | |
857 | file = "c218tunx.cod"; | |
858 | break; | |
859 | case MOXA_BOARD_CP204J: | |
860 | file = "cp204unx.cod"; | |
861 | break; | |
862 | default: | |
863 | file = "c320tunx.cod"; | |
864 | break; | |
865 | } | |
866 | ||
867 | ret = request_firmware(&fw, file, dev); | |
868 | if (ret) { | |
ec09cd56 JS |
869 | printk(KERN_ERR "MOXA: request_firmware failed. Make sure " |
870 | "you've placed '%s' file into your firmware " | |
871 | "loader directory (e.g. /lib/firmware)\n", | |
872 | file); | |
810ab09b | 873 | goto err_free; |
03718234 JS |
874 | } |
875 | ||
876 | ret = moxa_load_fw(brd, fw); | |
877 | ||
878 | release_firmware(fw); | |
810ab09b JS |
879 | |
880 | if (ret) | |
881 | goto err_free; | |
882 | ||
2a541341 | 883 | spin_lock_bh(&moxa_lock); |
810ab09b | 884 | brd->ready = 1; |
0bcc4caa JS |
885 | if (!timer_pending(&moxaTimer)) |
886 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
2a541341 | 887 | spin_unlock_bh(&moxa_lock); |
0bcc4caa | 888 | |
810ab09b JS |
889 | return 0; |
890 | err_free: | |
891 | kfree(brd->ports); | |
892 | err: | |
03718234 JS |
893 | return ret; |
894 | } | |
895 | ||
810ab09b JS |
896 | static void moxa_board_deinit(struct moxa_board_conf *brd) |
897 | { | |
a8f5cda0 JS |
898 | unsigned int a, opened; |
899 | ||
900 | mutex_lock(&moxa_openlock); | |
7bcf97d1 | 901 | spin_lock_bh(&moxa_lock); |
810ab09b | 902 | brd->ready = 0; |
7bcf97d1 | 903 | spin_unlock_bh(&moxa_lock); |
a8f5cda0 JS |
904 | |
905 | /* pci hot-un-plug support */ | |
906 | for (a = 0; a < brd->numPorts; a++) | |
d450b5a0 AC |
907 | if (brd->ports[a].port.flags & ASYNC_INITIALIZED) { |
908 | struct tty_struct *tty = tty_port_tty_get( | |
909 | &brd->ports[a].port); | |
910 | if (tty) { | |
911 | tty_hangup(tty); | |
912 | tty_kref_put(tty); | |
913 | } | |
914 | } | |
a8f5cda0 JS |
915 | while (1) { |
916 | opened = 0; | |
917 | for (a = 0; a < brd->numPorts; a++) | |
9de6a51f | 918 | if (brd->ports[a].port.flags & ASYNC_INITIALIZED) |
a8f5cda0 JS |
919 | opened++; |
920 | mutex_unlock(&moxa_openlock); | |
921 | if (!opened) | |
922 | break; | |
923 | msleep(50); | |
924 | mutex_lock(&moxa_openlock); | |
925 | } | |
926 | ||
810ab09b JS |
927 | iounmap(brd->basemem); |
928 | brd->basemem = NULL; | |
929 | kfree(brd->ports); | |
930 | } | |
931 | ||
1da177e4 | 932 | #ifdef CONFIG_PCI |
9cde5bf0 JS |
933 | static int __devinit moxa_pci_probe(struct pci_dev *pdev, |
934 | const struct pci_device_id *ent) | |
1da177e4 | 935 | { |
9cde5bf0 JS |
936 | struct moxa_board_conf *board; |
937 | unsigned int i; | |
938 | int board_type = ent->driver_data; | |
939 | int retval; | |
940 | ||
941 | retval = pci_enable_device(pdev); | |
7aeb95da JS |
942 | if (retval) { |
943 | dev_err(&pdev->dev, "can't enable pci device\n"); | |
9cde5bf0 | 944 | goto err; |
7aeb95da | 945 | } |
9cde5bf0 JS |
946 | |
947 | for (i = 0; i < MAX_BOARDS; i++) | |
948 | if (moxa_boards[i].basemem == NULL) | |
949 | break; | |
950 | ||
951 | retval = -ENODEV; | |
952 | if (i >= MAX_BOARDS) { | |
7aeb95da | 953 | dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " |
9cde5bf0 JS |
954 | "found. Board is ignored.\n", MAX_BOARDS); |
955 | goto err; | |
956 | } | |
957 | ||
958 | board = &moxa_boards[i]; | |
e46a5e3f JS |
959 | |
960 | retval = pci_request_region(pdev, 2, "moxa-base"); | |
961 | if (retval) { | |
962 | dev_err(&pdev->dev, "can't request pci region 2\n"); | |
963 | goto err; | |
964 | } | |
965 | ||
24cb2335 | 966 | board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); |
7aeb95da JS |
967 | if (board->basemem == NULL) { |
968 | dev_err(&pdev->dev, "can't remap io space 2\n"); | |
e46a5e3f | 969 | goto err_reg; |
7aeb95da | 970 | } |
9cde5bf0 | 971 | |
1da177e4 LT |
972 | board->boardType = board_type; |
973 | switch (board_type) { | |
974 | case MOXA_BOARD_C218_ISA: | |
975 | case MOXA_BOARD_C218_PCI: | |
976 | board->numPorts = 8; | |
977 | break; | |
978 | ||
979 | case MOXA_BOARD_CP204J: | |
980 | board->numPorts = 4; | |
981 | break; | |
982 | default: | |
983 | board->numPorts = 0; | |
984 | break; | |
985 | } | |
986 | board->busType = MOXA_BUS_TYPE_PCI; | |
a784bf7c | 987 | |
03718234 JS |
988 | retval = moxa_init_board(board, &pdev->dev); |
989 | if (retval) | |
990 | goto err_base; | |
991 | ||
9cde5bf0 | 992 | pci_set_drvdata(pdev, board); |
1da177e4 | 993 | |
bb9f910a JS |
994 | dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", |
995 | moxa_brdname[board_type - 1], board->numPorts); | |
996 | ||
eaa95a8d | 997 | return 0; |
03718234 JS |
998 | err_base: |
999 | iounmap(board->basemem); | |
1000 | board->basemem = NULL; | |
e46a5e3f JS |
1001 | err_reg: |
1002 | pci_release_region(pdev, 2); | |
9cde5bf0 JS |
1003 | err: |
1004 | return retval; | |
1005 | } | |
1006 | ||
1007 | static void __devexit moxa_pci_remove(struct pci_dev *pdev) | |
1008 | { | |
1009 | struct moxa_board_conf *brd = pci_get_drvdata(pdev); | |
1010 | ||
810ab09b JS |
1011 | moxa_board_deinit(brd); |
1012 | ||
e46a5e3f | 1013 | pci_release_region(pdev, 2); |
1da177e4 | 1014 | } |
a784bf7c JS |
1015 | |
1016 | static struct pci_driver moxa_pci_driver = { | |
1017 | .name = "moxa", | |
1018 | .id_table = moxa_pcibrds, | |
1019 | .probe = moxa_pci_probe, | |
1020 | .remove = __devexit_p(moxa_pci_remove) | |
1021 | }; | |
1da177e4 LT |
1022 | #endif /* CONFIG_PCI */ |
1023 | ||
1024 | static int __init moxa_init(void) | |
1025 | { | |
810ab09b | 1026 | unsigned int isabrds = 0; |
d353eca4 | 1027 | int retval = 0; |
c6fc826e RM |
1028 | struct moxa_board_conf *brd = moxa_boards; |
1029 | unsigned int i; | |
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. */ |
c6fc826e | 1057 | |
1da177e4 | 1058 | for (i = 0; i < MAX_BOARDS; i++) { |
d353eca4 JS |
1059 | if (!baseaddr[i]) |
1060 | break; | |
1061 | if (type[i] == MOXA_BOARD_C218_ISA || | |
1062 | type[i] == MOXA_BOARD_C320_ISA) { | |
7aeb95da | 1063 | pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", |
d353eca4 JS |
1064 | isabrds + 1, moxa_brdname[type[i] - 1], |
1065 | baseaddr[i]); | |
1066 | brd->boardType = type[i]; | |
1067 | brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : | |
1068 | numports[i]; | |
1069 | brd->busType = MOXA_BUS_TYPE_ISA; | |
24cb2335 | 1070 | brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); |
d353eca4 | 1071 | if (!brd->basemem) { |
eaa95a8d | 1072 | printk(KERN_ERR "MOXA: can't remap %lx\n", |
d353eca4 | 1073 | baseaddr[i]); |
1da177e4 LT |
1074 | continue; |
1075 | } | |
03718234 JS |
1076 | if (moxa_init_board(brd, NULL)) { |
1077 | iounmap(brd->basemem); | |
1078 | brd->basemem = NULL; | |
1079 | continue; | |
1080 | } | |
d353eca4 | 1081 | |
bb9f910a JS |
1082 | printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " |
1083 | "ready (%u ports, firmware loaded)\n", | |
1084 | baseaddr[i], brd->numPorts); | |
1085 | ||
d353eca4 JS |
1086 | brd++; |
1087 | isabrds++; | |
1da177e4 LT |
1088 | } |
1089 | } | |
a784bf7c | 1090 | |
1da177e4 | 1091 | #ifdef CONFIG_PCI |
a784bf7c JS |
1092 | retval = pci_register_driver(&moxa_pci_driver); |
1093 | if (retval) { | |
eaa95a8d | 1094 | printk(KERN_ERR "Can't register MOXA pci driver!\n"); |
d353eca4 | 1095 | if (isabrds) |
a784bf7c | 1096 | retval = 0; |
1da177e4 LT |
1097 | } |
1098 | #endif | |
a784bf7c | 1099 | |
a784bf7c | 1100 | return retval; |
1da177e4 LT |
1101 | } |
1102 | ||
1103 | static void __exit moxa_exit(void) | |
1104 | { | |
eaa95a8d | 1105 | unsigned int i; |
1da177e4 | 1106 | |
9cde5bf0 | 1107 | #ifdef CONFIG_PCI |
a784bf7c | 1108 | pci_unregister_driver(&moxa_pci_driver); |
9cde5bf0 | 1109 | #endif |
a784bf7c | 1110 | |
810ab09b JS |
1111 | for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ |
1112 | if (moxa_boards[i].ready) | |
1113 | moxa_board_deinit(&moxa_boards[i]); | |
2a541341 JS |
1114 | |
1115 | del_timer_sync(&moxaTimer); | |
1116 | ||
1117 | if (tty_unregister_driver(moxaDriver)) | |
1118 | printk(KERN_ERR "Couldn't unregister MOXA Intellio family " | |
1119 | "serial driver\n"); | |
1120 | put_tty_driver(moxaDriver); | |
1da177e4 LT |
1121 | } |
1122 | ||
1123 | module_init(moxa_init); | |
1124 | module_exit(moxa_exit); | |
1125 | ||
f176178b | 1126 | static void moxa_shutdown(struct tty_port *port) |
a8f5cda0 | 1127 | { |
f176178b AC |
1128 | struct moxa_port *ch = container_of(port, struct moxa_port, port); |
1129 | MoxaPortDisable(ch); | |
a8f5cda0 | 1130 | MoxaPortFlushData(ch, 2); |
f176178b | 1131 | clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags); |
a8f5cda0 JS |
1132 | } |
1133 | ||
31f35939 AC |
1134 | static int moxa_carrier_raised(struct tty_port *port) |
1135 | { | |
1136 | struct moxa_port *ch = container_of(port, struct moxa_port, port); | |
1137 | int dcd; | |
1138 | ||
8482bcd5 | 1139 | spin_lock_irq(&port->lock); |
31f35939 | 1140 | dcd = ch->DCDState; |
8482bcd5 | 1141 | spin_unlock_irq(&port->lock); |
31f35939 AC |
1142 | return dcd; |
1143 | } | |
1144 | ||
f176178b | 1145 | static void moxa_dtr_rts(struct tty_port *port, int onoff) |
a8f5cda0 | 1146 | { |
f176178b AC |
1147 | struct moxa_port *ch = container_of(port, struct moxa_port, port); |
1148 | MoxaPortLineCtrl(ch, onoff, onoff); | |
a8f5cda0 JS |
1149 | } |
1150 | ||
f176178b | 1151 | |
1da177e4 LT |
1152 | static int moxa_open(struct tty_struct *tty, struct file *filp) |
1153 | { | |
810ab09b | 1154 | struct moxa_board_conf *brd; |
8f8ecbad | 1155 | struct moxa_port *ch; |
1da177e4 LT |
1156 | int port; |
1157 | int retval; | |
1da177e4 | 1158 | |
11324edd | 1159 | port = tty->index; |
1da177e4 | 1160 | if (port == MAX_PORTS) { |
74d7d97b | 1161 | return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; |
1da177e4 | 1162 | } |
a8f5cda0 JS |
1163 | if (mutex_lock_interruptible(&moxa_openlock)) |
1164 | return -ERESTARTSYS; | |
810ab09b | 1165 | brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; |
a8f5cda0 JS |
1166 | if (!brd->ready) { |
1167 | mutex_unlock(&moxa_openlock); | |
810ab09b | 1168 | return -ENODEV; |
a8f5cda0 | 1169 | } |
1da177e4 | 1170 | |
f0e85277 DE |
1171 | if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) { |
1172 | mutex_unlock(&moxa_openlock); | |
1173 | return -ENODEV; | |
1174 | } | |
1175 | ||
810ab09b | 1176 | ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; |
9de6a51f | 1177 | ch->port.count++; |
1da177e4 | 1178 | tty->driver_data = ch; |
d450b5a0 | 1179 | tty_port_tty_set(&ch->port, tty); |
f176178b | 1180 | mutex_lock(&ch->port.mutex); |
9de6a51f | 1181 | if (!(ch->port.flags & ASYNC_INITIALIZED)) { |
1da177e4 | 1182 | ch->statusflags = 0; |
db1acaa6 | 1183 | moxa_set_tty_param(tty, tty->termios); |
b4173f45 JS |
1184 | MoxaPortLineCtrl(ch, 1, 1); |
1185 | MoxaPortEnable(ch); | |
a8f5cda0 | 1186 | MoxaSetFifo(ch, ch->type == PORT_16550A); |
9de6a51f | 1187 | ch->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1188 | } |
f176178b | 1189 | mutex_unlock(&ch->port.mutex); |
a8f5cda0 | 1190 | mutex_unlock(&moxa_openlock); |
1da177e4 | 1191 | |
f176178b AC |
1192 | retval = tty_port_block_til_ready(&ch->port, tty, filp); |
1193 | if (retval == 0) | |
1194 | set_bit(ASYNCB_NORMAL_ACTIVE, &ch->port.flags); | |
a8f5cda0 | 1195 | return retval; |
1da177e4 LT |
1196 | } |
1197 | ||
1198 | static void moxa_close(struct tty_struct *tty, struct file *filp) | |
1199 | { | |
f176178b | 1200 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1201 | ch->cflag = tty->termios->c_cflag; |
f176178b | 1202 | tty_port_close(&ch->port, tty, filp); |
1da177e4 LT |
1203 | } |
1204 | ||
1205 | static int moxa_write(struct tty_struct *tty, | |
1206 | const unsigned char *buf, int count) | |
1207 | { | |
b4173f45 | 1208 | struct moxa_port *ch = tty->driver_data; |
b4173f45 | 1209 | int len; |
1da177e4 | 1210 | |
1da177e4 | 1211 | if (ch == NULL) |
b4173f45 | 1212 | return 0; |
33f0f88f | 1213 | |
7bcf97d1 | 1214 | spin_lock_bh(&moxa_lock); |
d450b5a0 | 1215 | len = MoxaPortWriteData(tty, buf, count); |
7bcf97d1 | 1216 | spin_unlock_bh(&moxa_lock); |
1da177e4 | 1217 | |
a808ac0c | 1218 | set_bit(LOWWAIT, &ch->statusflags); |
eaa95a8d | 1219 | return len; |
1da177e4 LT |
1220 | } |
1221 | ||
1222 | static int moxa_write_room(struct tty_struct *tty) | |
1223 | { | |
8f8ecbad | 1224 | struct moxa_port *ch; |
1da177e4 LT |
1225 | |
1226 | if (tty->stopped) | |
eaa95a8d | 1227 | return 0; |
b4173f45 | 1228 | ch = tty->driver_data; |
1da177e4 | 1229 | if (ch == NULL) |
eaa95a8d | 1230 | return 0; |
b4173f45 | 1231 | return MoxaPortTxFree(ch); |
1da177e4 LT |
1232 | } |
1233 | ||
1234 | static void moxa_flush_buffer(struct tty_struct *tty) | |
1235 | { | |
b4173f45 | 1236 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1237 | |
1238 | if (ch == NULL) | |
1239 | return; | |
b4173f45 | 1240 | MoxaPortFlushData(ch, 1); |
1da177e4 LT |
1241 | tty_wakeup(tty); |
1242 | } | |
1243 | ||
1244 | static int moxa_chars_in_buffer(struct tty_struct *tty) | |
1245 | { | |
b4173f45 | 1246 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1247 | int chars; |
1da177e4 | 1248 | |
b4173f45 | 1249 | chars = MoxaPortTxQueue(ch); |
f710ebd7 | 1250 | if (chars) |
1da177e4 LT |
1251 | /* |
1252 | * Make it possible to wakeup anything waiting for output | |
1253 | * in tty_ioctl.c, etc. | |
1254 | */ | |
f710ebd7 | 1255 | set_bit(EMPTYWAIT, &ch->statusflags); |
eaa95a8d | 1256 | return chars; |
1da177e4 LT |
1257 | } |
1258 | ||
1da177e4 LT |
1259 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file) |
1260 | { | |
8482bcd5 | 1261 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1262 | int flag = 0, dtr, rts; |
1263 | ||
b4173f45 | 1264 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1265 | if (dtr) |
1266 | flag |= TIOCM_DTR; | |
1267 | if (rts) | |
1268 | flag |= TIOCM_RTS; | |
b4173f45 | 1269 | dtr = MoxaPortLineStatus(ch); |
1da177e4 LT |
1270 | if (dtr & 1) |
1271 | flag |= TIOCM_CTS; | |
1272 | if (dtr & 2) | |
1273 | flag |= TIOCM_DSR; | |
1274 | if (dtr & 4) | |
1275 | flag |= TIOCM_CD; | |
1276 | return flag; | |
1277 | } | |
1278 | ||
1279 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
1280 | unsigned int set, unsigned int clear) | |
1281 | { | |
a8f5cda0 | 1282 | struct moxa_port *ch; |
1da177e4 LT |
1283 | int port; |
1284 | int dtr, rts; | |
1285 | ||
11324edd | 1286 | port = tty->index; |
a8f5cda0 JS |
1287 | mutex_lock(&moxa_openlock); |
1288 | ch = tty->driver_data; | |
1289 | if (!ch) { | |
1290 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1291 | return -EINVAL; |
a8f5cda0 | 1292 | } |
1da177e4 | 1293 | |
b4173f45 | 1294 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1295 | if (set & TIOCM_RTS) |
1296 | rts = 1; | |
1297 | if (set & TIOCM_DTR) | |
1298 | dtr = 1; | |
1299 | if (clear & TIOCM_RTS) | |
1300 | rts = 0; | |
1301 | if (clear & TIOCM_DTR) | |
1302 | dtr = 0; | |
b4173f45 | 1303 | MoxaPortLineCtrl(ch, dtr, rts); |
a8f5cda0 | 1304 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1305 | return 0; |
1306 | } | |
1307 | ||
1da177e4 | 1308 | static void moxa_set_termios(struct tty_struct *tty, |
eaa95a8d | 1309 | struct ktermios *old_termios) |
1da177e4 | 1310 | { |
eaa95a8d | 1311 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1312 | |
1313 | if (ch == NULL) | |
1314 | return; | |
db1acaa6 | 1315 | moxa_set_tty_param(tty, old_termios); |
eaa95a8d | 1316 | if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) |
9de6a51f | 1317 | wake_up_interruptible(&ch->port.open_wait); |
1da177e4 LT |
1318 | } |
1319 | ||
1320 | static void moxa_stop(struct tty_struct *tty) | |
1321 | { | |
eaa95a8d | 1322 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1323 | |
1324 | if (ch == NULL) | |
1325 | return; | |
b4173f45 | 1326 | MoxaPortTxDisable(ch); |
a808ac0c | 1327 | set_bit(TXSTOPPED, &ch->statusflags); |
1da177e4 LT |
1328 | } |
1329 | ||
1330 | ||
1331 | static void moxa_start(struct tty_struct *tty) | |
1332 | { | |
eaa95a8d | 1333 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1334 | |
1335 | if (ch == NULL) | |
1336 | return; | |
1337 | ||
1338 | if (!(ch->statusflags & TXSTOPPED)) | |
1339 | return; | |
1340 | ||
b4173f45 | 1341 | MoxaPortTxEnable(ch); |
a808ac0c | 1342 | clear_bit(TXSTOPPED, &ch->statusflags); |
1da177e4 LT |
1343 | } |
1344 | ||
1345 | static void moxa_hangup(struct tty_struct *tty) | |
1346 | { | |
a808ac0c | 1347 | struct moxa_port *ch = tty->driver_data; |
f176178b | 1348 | tty_port_hangup(&ch->port); |
1da177e4 LT |
1349 | } |
1350 | ||
7bcf97d1 | 1351 | static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) |
1da177e4 | 1352 | { |
d450b5a0 | 1353 | struct tty_struct *tty; |
8482bcd5 | 1354 | unsigned long flags; |
7bcf97d1 | 1355 | dcd = !!dcd; |
1da177e4 | 1356 | |
8482bcd5 | 1357 | spin_lock_irqsave(&p->port.lock, flags); |
d450b5a0 | 1358 | if (dcd != p->DCDState) { |
8482bcd5 AC |
1359 | p->DCDState = dcd; |
1360 | spin_unlock_irqrestore(&p->port.lock, flags); | |
d450b5a0 AC |
1361 | tty = tty_port_tty_get(&p->port); |
1362 | if (tty && C_CLOCAL(tty) && !dcd) | |
1363 | tty_hangup(tty); | |
1364 | tty_kref_put(tty); | |
7bcf97d1 | 1365 | } |
8482bcd5 AC |
1366 | else |
1367 | spin_unlock_irqrestore(&p->port.lock, flags); | |
7bcf97d1 | 1368 | } |
1da177e4 | 1369 | |
7bcf97d1 JS |
1370 | static int moxa_poll_port(struct moxa_port *p, unsigned int handle, |
1371 | u16 __iomem *ip) | |
1372 | { | |
d450b5a0 | 1373 | struct tty_struct *tty = tty_port_tty_get(&p->port); |
7bcf97d1 | 1374 | void __iomem *ofsAddr; |
9de6a51f | 1375 | unsigned int inited = p->port.flags & ASYNC_INITIALIZED; |
7bcf97d1 JS |
1376 | u16 intr; |
1377 | ||
1378 | if (tty) { | |
a808ac0c | 1379 | if (test_bit(EMPTYWAIT, &p->statusflags) && |
7bcf97d1 | 1380 | MoxaPortTxQueue(p) == 0) { |
a808ac0c | 1381 | clear_bit(EMPTYWAIT, &p->statusflags); |
7bcf97d1 JS |
1382 | tty_wakeup(tty); |
1383 | } | |
a808ac0c | 1384 | if (test_bit(LOWWAIT, &p->statusflags) && !tty->stopped && |
7bcf97d1 | 1385 | MoxaPortTxQueue(p) <= WAKEUP_CHARS) { |
a808ac0c | 1386 | clear_bit(LOWWAIT, &p->statusflags); |
7bcf97d1 JS |
1387 | tty_wakeup(tty); |
1388 | } | |
1389 | ||
f9b412a8 | 1390 | if (inited && !test_bit(TTY_THROTTLED, &tty->flags) && |
7bcf97d1 JS |
1391 | MoxaPortRxQueue(p) > 0) { /* RX */ |
1392 | MoxaPortReadData(p); | |
1393 | tty_schedule_flip(tty); | |
1394 | } | |
1395 | } else { | |
a808ac0c | 1396 | clear_bit(EMPTYWAIT, &p->statusflags); |
7bcf97d1 | 1397 | MoxaPortFlushData(p, 0); /* flush RX */ |
1da177e4 | 1398 | } |
0bcc4caa | 1399 | |
7bcf97d1 | 1400 | if (!handle) /* nothing else to do */ |
0e0fd7d7 | 1401 | goto put; |
7bcf97d1 JS |
1402 | |
1403 | intr = readw(ip); /* port irq status */ | |
1404 | if (intr == 0) | |
0e0fd7d7 | 1405 | goto put; |
7bcf97d1 JS |
1406 | |
1407 | writew(0, ip); /* ACK port */ | |
1408 | ofsAddr = p->tableAddr; | |
1409 | if (intr & IntrTx) /* disable tx intr */ | |
1410 | writew(readw(ofsAddr + HostStat) & ~WakeupTx, | |
1411 | ofsAddr + HostStat); | |
1412 | ||
1413 | if (!inited) | |
0e0fd7d7 | 1414 | goto put; |
7bcf97d1 JS |
1415 | |
1416 | if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ | |
1417 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1418 | tty_schedule_flip(tty); | |
1419 | } | |
1420 | ||
1421 | if (intr & IntrLine) | |
1422 | moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); | |
0e0fd7d7 JS |
1423 | put: |
1424 | tty_kref_put(tty); | |
7bcf97d1 JS |
1425 | |
1426 | return 0; | |
1427 | } | |
1428 | ||
1429 | static void moxa_poll(unsigned long ignored) | |
1430 | { | |
1431 | struct moxa_board_conf *brd; | |
1432 | u16 __iomem *ip; | |
2a541341 | 1433 | unsigned int card, port, served = 0; |
7bcf97d1 JS |
1434 | |
1435 | spin_lock(&moxa_lock); | |
1da177e4 | 1436 | for (card = 0; card < MAX_BOARDS; card++) { |
7bcf97d1 JS |
1437 | brd = &moxa_boards[card]; |
1438 | if (!brd->ready) | |
1da177e4 | 1439 | continue; |
7bcf97d1 | 1440 | |
2a541341 JS |
1441 | served++; |
1442 | ||
7bcf97d1 JS |
1443 | ip = NULL; |
1444 | if (readb(brd->intPend) == 0xff) | |
1445 | ip = brd->intTable + readb(brd->intNdx); | |
1446 | ||
1447 | for (port = 0; port < brd->numPorts; port++) | |
1448 | moxa_poll_port(&brd->ports[port], !!ip, ip + port); | |
1449 | ||
1450 | if (ip) | |
1451 | writeb(0, brd->intPend); /* ACK */ | |
1452 | ||
1453 | if (moxaLowWaterChk) { | |
1454 | struct moxa_port *p = brd->ports; | |
1455 | for (port = 0; port < brd->numPorts; port++, p++) | |
1456 | if (p->lowChkFlag) { | |
1457 | p->lowChkFlag = 0; | |
1458 | moxa_low_water_check(p->tableAddr); | |
1da177e4 | 1459 | } |
1da177e4 LT |
1460 | } |
1461 | } | |
7bcf97d1 | 1462 | moxaLowWaterChk = 0; |
1da177e4 | 1463 | |
2a541341 JS |
1464 | if (served) |
1465 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
1466 | spin_unlock(&moxa_lock); | |
1da177e4 LT |
1467 | } |
1468 | ||
1469 | /******************************************************************************/ | |
1470 | ||
db1acaa6 | 1471 | static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 1472 | { |
eaa95a8d JS |
1473 | register struct ktermios *ts = tty->termios; |
1474 | struct moxa_port *ch = tty->driver_data; | |
db1acaa6 | 1475 | int rts, cts, txflow, rxflow, xany, baud; |
1da177e4 | 1476 | |
1da177e4 LT |
1477 | rts = cts = txflow = rxflow = xany = 0; |
1478 | if (ts->c_cflag & CRTSCTS) | |
1479 | rts = cts = 1; | |
1480 | if (ts->c_iflag & IXON) | |
1481 | txflow = 1; | |
1482 | if (ts->c_iflag & IXOFF) | |
1483 | rxflow = 1; | |
1484 | if (ts->c_iflag & IXANY) | |
1485 | xany = 1; | |
db1acaa6 AC |
1486 | |
1487 | /* Clear the features we don't support */ | |
1488 | ts->c_cflag &= ~CMSPAR; | |
b4173f45 JS |
1489 | MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); |
1490 | baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); | |
db1acaa6 AC |
1491 | if (baud == -1) |
1492 | baud = tty_termios_baud_rate(old_termios); | |
1493 | /* Not put the baud rate into the termios data */ | |
1494 | tty_encode_baud_rate(tty, baud, baud); | |
1da177e4 LT |
1495 | } |
1496 | ||
1da177e4 LT |
1497 | /***************************************************************************** |
1498 | * Driver level functions: * | |
1da177e4 | 1499 | *****************************************************************************/ |
1da177e4 | 1500 | |
b4173f45 | 1501 | static void MoxaPortFlushData(struct moxa_port *port, int mode) |
1da177e4 LT |
1502 | { |
1503 | void __iomem *ofsAddr; | |
eaa95a8d | 1504 | if (mode < 0 || mode > 2) |
1da177e4 | 1505 | return; |
b4173f45 | 1506 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1507 | moxafunc(ofsAddr, FC_FlushQueue, mode); |
1508 | if (mode != 1) { | |
b4173f45 | 1509 | port->lowChkFlag = 0; |
6f56b658 | 1510 | moxa_low_water_check(ofsAddr); |
1da177e4 LT |
1511 | } |
1512 | } | |
1513 | ||
1da177e4 LT |
1514 | /* |
1515 | * Moxa Port Number Description: | |
1516 | * | |
1517 | * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, | |
1518 | * the port number using in MOXA driver functions will be 0 to 31 for | |
1519 | * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 | |
1520 | * to 127 for fourth. For example, if you setup three MOXA boards, | |
1521 | * first board is C218, second board is C320-16 and third board is | |
1522 | * C320-32. The port number of first board (C218 - 8 ports) is from | |
1523 | * 0 to 7. The port number of second board (C320 - 16 ports) is form | |
1524 | * 32 to 47. The port number of third board (C320 - 32 ports) is from | |
1525 | * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to | |
1526 | * 127 will be invalid. | |
1527 | * | |
1528 | * | |
1529 | * Moxa Functions Description: | |
1530 | * | |
1531 | * Function 1: Driver initialization routine, this routine must be | |
1532 | * called when initialized driver. | |
1533 | * Syntax: | |
1534 | * void MoxaDriverInit(); | |
1535 | * | |
1536 | * | |
1537 | * Function 2: Moxa driver private IOCTL command processing. | |
1538 | * Syntax: | |
1539 | * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); | |
1540 | * | |
1541 | * unsigned int cmd : IOCTL command | |
1542 | * unsigned long arg : IOCTL argument | |
1543 | * int port : port number (0 - 127) | |
1544 | * | |
1545 | * return: 0 (OK) | |
1546 | * -EINVAL | |
1547 | * -ENOIOCTLCMD | |
1548 | * | |
1549 | * | |
1da177e4 LT |
1550 | * Function 6: Enable this port to start Tx/Rx data. |
1551 | * Syntax: | |
1552 | * void MoxaPortEnable(int port); | |
1553 | * int port : port number (0 - 127) | |
1554 | * | |
1555 | * | |
1556 | * Function 7: Disable this port | |
1557 | * Syntax: | |
1558 | * void MoxaPortDisable(int port); | |
1559 | * int port : port number (0 - 127) | |
1560 | * | |
1561 | * | |
1da177e4 LT |
1562 | * Function 10: Setting baud rate of this port. |
1563 | * Syntax: | |
08d01c79 | 1564 | * speed_t MoxaPortSetBaud(int port, speed_t baud); |
1da177e4 LT |
1565 | * int port : port number (0 - 127) |
1566 | * long baud : baud rate (50 - 115200) | |
1567 | * | |
1568 | * return: 0 : this port is invalid or baud < 50 | |
1569 | * 50 - 115200 : the real baud rate set to the port, if | |
1570 | * the argument baud is large than maximun | |
1571 | * available baud rate, the real setting | |
1572 | * baud rate will be the maximun baud rate. | |
1573 | * | |
1574 | * | |
1da177e4 LT |
1575 | * Function 12: Configure the port. |
1576 | * Syntax: | |
606d099c | 1577 | * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); |
1da177e4 | 1578 | * int port : port number (0 - 127) |
606d099c | 1579 | * struct ktermios * termio : termio structure pointer |
c7bce309 | 1580 | * speed_t baud : baud rate |
1da177e4 LT |
1581 | * |
1582 | * return: -1 : this port is invalid or termio == NULL | |
1583 | * 0 : setting O.K. | |
1584 | * | |
1585 | * | |
1586 | * Function 13: Get the DTR/RTS state of this port. | |
1587 | * Syntax: | |
1588 | * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); | |
1589 | * int port : port number (0 - 127) | |
1590 | * int * dtrState : pointer to INT to receive the current DTR | |
1591 | * state. (if NULL, this function will not | |
1592 | * write to this address) | |
1593 | * int * rtsState : pointer to INT to receive the current RTS | |
1594 | * state. (if NULL, this function will not | |
1595 | * write to this address) | |
1596 | * | |
1597 | * return: -1 : this port is invalid | |
1598 | * 0 : O.K. | |
1599 | * | |
1600 | * | |
1601 | * Function 14: Setting the DTR/RTS output state of this port. | |
1602 | * Syntax: | |
1603 | * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); | |
1604 | * int port : port number (0 - 127) | |
1605 | * int dtrState : DTR output state (0: off, 1: on) | |
1606 | * int rtsState : RTS output state (0: off, 1: on) | |
1607 | * | |
1608 | * | |
1609 | * Function 15: Setting the flow control of this port. | |
1610 | * Syntax: | |
1611 | * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, | |
1612 | * int txFlow,int xany); | |
1613 | * int port : port number (0 - 127) | |
1614 | * int rtsFlow : H/W RTS flow control (0: no, 1: yes) | |
1615 | * int ctsFlow : H/W CTS flow control (0: no, 1: yes) | |
1616 | * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) | |
1617 | * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) | |
1618 | * int xany : S/W XANY flow control (0: no, 1: yes) | |
1619 | * | |
1620 | * | |
1621 | * Function 16: Get ths line status of this port | |
1622 | * Syntax: | |
1623 | * int MoxaPortLineStatus(int port); | |
1624 | * int port : port number (0 - 127) | |
1625 | * | |
1626 | * return: Bit 0 - CTS state (0: off, 1: on) | |
1627 | * Bit 1 - DSR state (0: off, 1: on) | |
1628 | * Bit 2 - DCD state (0: off, 1: on) | |
1629 | * | |
1630 | * | |
1da177e4 LT |
1631 | * Function 19: Flush the Rx/Tx buffer data of this port. |
1632 | * Syntax: | |
1633 | * void MoxaPortFlushData(int port, int mode); | |
1634 | * int port : port number (0 - 127) | |
1635 | * int mode | |
1636 | * 0 : flush the Rx buffer | |
1637 | * 1 : flush the Tx buffer | |
1638 | * 2 : flush the Rx and Tx buffer | |
1639 | * | |
1640 | * | |
1641 | * Function 20: Write data. | |
1642 | * Syntax: | |
1643 | * int MoxaPortWriteData(int port, unsigned char * buffer, int length); | |
1644 | * int port : port number (0 - 127) | |
1645 | * unsigned char * buffer : pointer to write data buffer. | |
1646 | * int length : write data length | |
1647 | * | |
1648 | * return: 0 - length : real write data length | |
1649 | * | |
1650 | * | |
1651 | * Function 21: Read data. | |
1652 | * Syntax: | |
33f0f88f | 1653 | * int MoxaPortReadData(int port, struct tty_struct *tty); |
1da177e4 | 1654 | * int port : port number (0 - 127) |
33f0f88f | 1655 | * struct tty_struct *tty : tty for data |
1da177e4 LT |
1656 | * |
1657 | * return: 0 - length : real read data length | |
1658 | * | |
1659 | * | |
1da177e4 LT |
1660 | * Function 24: Get the Tx buffer current queued data bytes |
1661 | * Syntax: | |
1662 | * int MoxaPortTxQueue(int port); | |
1663 | * int port : port number (0 - 127) | |
1664 | * | |
1665 | * return: .. : Tx buffer current queued data bytes | |
1666 | * | |
1667 | * | |
1668 | * Function 25: Get the Tx buffer current free space | |
1669 | * Syntax: | |
1670 | * int MoxaPortTxFree(int port); | |
1671 | * int port : port number (0 - 127) | |
1672 | * | |
1673 | * return: .. : Tx buffer current free space | |
1674 | * | |
1675 | * | |
1676 | * Function 26: Get the Rx buffer current queued data bytes | |
1677 | * Syntax: | |
1678 | * int MoxaPortRxQueue(int port); | |
1679 | * int port : port number (0 - 127) | |
1680 | * | |
1681 | * return: .. : Rx buffer current queued data bytes | |
1682 | * | |
1683 | * | |
1da177e4 LT |
1684 | * Function 28: Disable port data transmission. |
1685 | * Syntax: | |
1686 | * void MoxaPortTxDisable(int port); | |
1687 | * int port : port number (0 - 127) | |
1688 | * | |
1689 | * | |
1690 | * Function 29: Enable port data transmission. | |
1691 | * Syntax: | |
1692 | * void MoxaPortTxEnable(int port); | |
1693 | * int port : port number (0 - 127) | |
1694 | * | |
1695 | * | |
1da177e4 LT |
1696 | * Function 31: Get the received BREAK signal count and reset it. |
1697 | * Syntax: | |
1698 | * int MoxaPortResetBrkCnt(int port); | |
1699 | * int port : port number (0 - 127) | |
1700 | * | |
1701 | * return: 0 - .. : BREAK signal count | |
1702 | * | |
1703 | * | |
1da177e4 | 1704 | */ |
1da177e4 | 1705 | |
b4173f45 | 1706 | static void MoxaPortEnable(struct moxa_port *port) |
1da177e4 LT |
1707 | { |
1708 | void __iomem *ofsAddr; | |
eaa95a8d | 1709 | u16 lowwater = 512; |
1da177e4 | 1710 | |
b4173f45 | 1711 | ofsAddr = port->tableAddr; |
1da177e4 | 1712 | writew(lowwater, ofsAddr + Low_water); |
08d01c79 | 1713 | if (MOXA_IS_320(port->board)) |
1da177e4 | 1714 | moxafunc(ofsAddr, FC_SetBreakIrq, 0); |
eaa95a8d JS |
1715 | else |
1716 | writew(readw(ofsAddr + HostStat) | WakeupBreak, | |
1717 | ofsAddr + HostStat); | |
1da177e4 LT |
1718 | |
1719 | moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); | |
1720 | moxafunc(ofsAddr, FC_FlushQueue, 2); | |
1721 | ||
1722 | moxafunc(ofsAddr, FC_EnableCH, Magic_code); | |
1723 | MoxaPortLineStatus(port); | |
1724 | } | |
1725 | ||
b4173f45 | 1726 | static void MoxaPortDisable(struct moxa_port *port) |
1da177e4 | 1727 | { |
b4173f45 | 1728 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
1729 | |
1730 | moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ | |
1731 | moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); | |
1732 | writew(0, ofsAddr + HostStat); | |
1733 | moxafunc(ofsAddr, FC_DisableCH, Magic_code); | |
1734 | } | |
1735 | ||
08d01c79 | 1736 | static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) |
1da177e4 | 1737 | { |
08d01c79 JS |
1738 | void __iomem *ofsAddr = port->tableAddr; |
1739 | unsigned int clock, val; | |
1740 | speed_t max; | |
1da177e4 | 1741 | |
08d01c79 JS |
1742 | max = MOXA_IS_320(port->board) ? 460800 : 921600; |
1743 | if (baud < 50) | |
eaa95a8d | 1744 | return 0; |
1da177e4 LT |
1745 | if (baud > max) |
1746 | baud = max; | |
08d01c79 | 1747 | clock = 921600; |
1da177e4 LT |
1748 | val = clock / baud; |
1749 | moxafunc(ofsAddr, FC_SetBaud, val); | |
1750 | baud = clock / val; | |
eaa95a8d | 1751 | return baud; |
1da177e4 LT |
1752 | } |
1753 | ||
b4173f45 JS |
1754 | static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, |
1755 | speed_t baud) | |
1da177e4 LT |
1756 | { |
1757 | void __iomem *ofsAddr; | |
1758 | tcflag_t cflag; | |
1da177e4 LT |
1759 | tcflag_t mode = 0; |
1760 | ||
b4173f45 | 1761 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1762 | cflag = termio->c_cflag; /* termio->c_cflag */ |
1763 | ||
1764 | mode = termio->c_cflag & CSIZE; | |
1765 | if (mode == CS5) | |
1766 | mode = MX_CS5; | |
1767 | else if (mode == CS6) | |
1768 | mode = MX_CS6; | |
1769 | else if (mode == CS7) | |
1770 | mode = MX_CS7; | |
1771 | else if (mode == CS8) | |
1772 | mode = MX_CS8; | |
1773 | ||
1774 | if (termio->c_cflag & CSTOPB) { | |
1775 | if (mode == MX_CS5) | |
1776 | mode |= MX_STOP15; | |
1777 | else | |
1778 | mode |= MX_STOP2; | |
1779 | } else | |
1780 | mode |= MX_STOP1; | |
1781 | ||
1782 | if (termio->c_cflag & PARENB) { | |
1783 | if (termio->c_cflag & PARODD) | |
1784 | mode |= MX_PARODD; | |
1785 | else | |
1786 | mode |= MX_PAREVEN; | |
1787 | } else | |
1788 | mode |= MX_PARNONE; | |
1789 | ||
eaa95a8d | 1790 | moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); |
1da177e4 | 1791 | |
08d01c79 JS |
1792 | if (MOXA_IS_320(port->board) && baud >= 921600) |
1793 | return -1; | |
1794 | ||
db1acaa6 | 1795 | baud = MoxaPortSetBaud(port, baud); |
1da177e4 LT |
1796 | |
1797 | if (termio->c_iflag & (IXON | IXOFF | IXANY)) { | |
f5c5a36d | 1798 | spin_lock_irq(&moxafunc_lock); |
1da177e4 LT |
1799 | writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); |
1800 | writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); | |
1801 | writeb(FC_SetXonXoff, ofsAddr + FuncCode); | |
6f56b658 | 1802 | moxa_wait_finish(ofsAddr); |
a808ac0c | 1803 | spin_unlock_irq(&moxafunc_lock); |
1da177e4 LT |
1804 | |
1805 | } | |
eaa95a8d | 1806 | return baud; |
1da177e4 LT |
1807 | } |
1808 | ||
b4173f45 JS |
1809 | static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, |
1810 | int *rtsState) | |
1da177e4 | 1811 | { |
b4173f45 JS |
1812 | if (dtrState) |
1813 | *dtrState = !!(port->lineCtrl & DTR_ON); | |
1814 | if (rtsState) | |
1815 | *rtsState = !!(port->lineCtrl & RTS_ON); | |
1816 | ||
eaa95a8d | 1817 | return 0; |
1da177e4 LT |
1818 | } |
1819 | ||
b4173f45 | 1820 | static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) |
1da177e4 | 1821 | { |
eaa95a8d | 1822 | u8 mode = 0; |
1da177e4 | 1823 | |
1da177e4 LT |
1824 | if (dtr) |
1825 | mode |= DTR_ON; | |
1826 | if (rts) | |
1827 | mode |= RTS_ON; | |
b4173f45 JS |
1828 | port->lineCtrl = mode; |
1829 | moxafunc(port->tableAddr, FC_LineControl, mode); | |
1da177e4 LT |
1830 | } |
1831 | ||
b4173f45 JS |
1832 | static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, |
1833 | int txflow, int rxflow, int txany) | |
1da177e4 | 1834 | { |
b4173f45 | 1835 | int mode = 0; |
1da177e4 | 1836 | |
1da177e4 LT |
1837 | if (rts) |
1838 | mode |= RTS_FlowCtl; | |
1839 | if (cts) | |
1840 | mode |= CTS_FlowCtl; | |
1841 | if (txflow) | |
1842 | mode |= Tx_FlowCtl; | |
1843 | if (rxflow) | |
1844 | mode |= Rx_FlowCtl; | |
1845 | if (txany) | |
1846 | mode |= IXM_IXANY; | |
b4173f45 | 1847 | moxafunc(port->tableAddr, FC_SetFlowCtl, mode); |
1da177e4 LT |
1848 | } |
1849 | ||
b4173f45 | 1850 | static int MoxaPortLineStatus(struct moxa_port *port) |
1da177e4 LT |
1851 | { |
1852 | void __iomem *ofsAddr; | |
1853 | int val; | |
1854 | ||
b4173f45 | 1855 | ofsAddr = port->tableAddr; |
f5c5a36d AC |
1856 | if (MOXA_IS_320(port->board)) |
1857 | val = moxafuncret(ofsAddr, FC_LineStatus, 0); | |
1858 | else | |
1da177e4 | 1859 | val = readw(ofsAddr + FlagStat) >> 4; |
1da177e4 | 1860 | val &= 0x0B; |
7bcf97d1 | 1861 | if (val & 8) |
1da177e4 | 1862 | val |= 4; |
7bcf97d1 | 1863 | moxa_new_dcdstate(port, val & 8); |
1da177e4 | 1864 | val &= 7; |
7bcf97d1 | 1865 | return val; |
1da177e4 LT |
1866 | } |
1867 | ||
d450b5a0 | 1868 | static int MoxaPortWriteData(struct tty_struct *tty, |
2108eba5 | 1869 | const unsigned char *buffer, int len) |
1da177e4 | 1870 | { |
d450b5a0 | 1871 | struct moxa_port *port = tty->driver_data; |
1da177e4 | 1872 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
1873 | unsigned int c, total; |
1874 | u16 head, tail, tx_mask, spage, epage; | |
1875 | u16 pageno, pageofs, bufhead; | |
1da177e4 | 1876 | |
b4173f45 JS |
1877 | ofsAddr = port->tableAddr; |
1878 | baseAddr = port->board->basemem; | |
1da177e4 LT |
1879 | tx_mask = readw(ofsAddr + TX_mask); |
1880 | spage = readw(ofsAddr + Page_txb); | |
1881 | epage = readw(ofsAddr + EndPage_txb); | |
1882 | tail = readw(ofsAddr + TXwptr); | |
1883 | head = readw(ofsAddr + TXrptr); | |
2108eba5 | 1884 | c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); |
1da177e4 LT |
1885 | if (c > len) |
1886 | c = len; | |
9de6a51f | 1887 | moxaLog.txcnt[port->port.tty->index] += c; |
1da177e4 LT |
1888 | total = c; |
1889 | if (spage == epage) { | |
1890 | bufhead = readw(ofsAddr + Ofs_txb); | |
1891 | writew(spage, baseAddr + Control_reg); | |
1892 | while (c > 0) { | |
1893 | if (head > tail) | |
1894 | len = head - tail - 1; | |
1895 | else | |
1896 | len = tx_mask + 1 - tail; | |
1897 | len = (c > len) ? len : c; | |
1898 | ofs = baseAddr + DynPage_addr + bufhead + tail; | |
2108eba5 JS |
1899 | memcpy_toio(ofs, buffer, len); |
1900 | buffer += len; | |
1da177e4 LT |
1901 | tail = (tail + len) & tx_mask; |
1902 | c -= len; | |
1903 | } | |
1da177e4 | 1904 | } else { |
1da177e4 LT |
1905 | pageno = spage + (tail >> 13); |
1906 | pageofs = tail & Page_mask; | |
2108eba5 JS |
1907 | while (c > 0) { |
1908 | len = Page_size - pageofs; | |
1909 | if (len > c) | |
1910 | len = c; | |
1da177e4 LT |
1911 | writeb(pageno, baseAddr + Control_reg); |
1912 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
1913 | memcpy_toio(ofs, buffer, len); |
1914 | buffer += len; | |
1da177e4 LT |
1915 | if (++pageno == epage) |
1916 | pageno = spage; | |
1917 | pageofs = 0; | |
2108eba5 JS |
1918 | c -= len; |
1919 | } | |
1920 | tail = (tail + total) & tx_mask; | |
1da177e4 | 1921 | } |
2108eba5 | 1922 | writew(tail, ofsAddr + TXwptr); |
1da177e4 | 1923 | writeb(1, ofsAddr + CD180TXirq); /* start to send */ |
2108eba5 | 1924 | return total; |
1da177e4 LT |
1925 | } |
1926 | ||
7bcf97d1 | 1927 | static int MoxaPortReadData(struct moxa_port *port) |
1da177e4 | 1928 | { |
9de6a51f | 1929 | struct tty_struct *tty = port->port.tty; |
2108eba5 | 1930 | unsigned char *dst; |
1da177e4 | 1931 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
1932 | unsigned int count, len, total; |
1933 | u16 tail, rx_mask, spage, epage; | |
1934 | u16 pageno, pageofs, bufhead, head; | |
1da177e4 | 1935 | |
b4173f45 JS |
1936 | ofsAddr = port->tableAddr; |
1937 | baseAddr = port->board->basemem; | |
1da177e4 LT |
1938 | head = readw(ofsAddr + RXrptr); |
1939 | tail = readw(ofsAddr + RXwptr); | |
1940 | rx_mask = readw(ofsAddr + RX_mask); | |
1941 | spage = readw(ofsAddr + Page_rxb); | |
1942 | epage = readw(ofsAddr + EndPage_rxb); | |
2108eba5 | 1943 | count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); |
1da177e4 | 1944 | if (count == 0) |
33f0f88f | 1945 | return 0; |
1da177e4 | 1946 | |
33f0f88f | 1947 | total = count; |
7bcf97d1 | 1948 | moxaLog.rxcnt[tty->index] += total; |
1da177e4 LT |
1949 | if (spage == epage) { |
1950 | bufhead = readw(ofsAddr + Ofs_rxb); | |
1951 | writew(spage, baseAddr + Control_reg); | |
1952 | while (count > 0) { | |
1da177e4 | 1953 | ofs = baseAddr + DynPage_addr + bufhead + head; |
2108eba5 JS |
1954 | len = (tail >= head) ? (tail - head) : |
1955 | (rx_mask + 1 - head); | |
1956 | len = tty_prepare_flip_string(tty, &dst, | |
1957 | min(len, count)); | |
1958 | memcpy_fromio(dst, ofs, len); | |
1da177e4 LT |
1959 | head = (head + len) & rx_mask; |
1960 | count -= len; | |
1961 | } | |
1da177e4 | 1962 | } else { |
1da177e4 LT |
1963 | pageno = spage + (head >> 13); |
1964 | pageofs = head & Page_mask; | |
2108eba5 | 1965 | while (count > 0) { |
1da177e4 LT |
1966 | writew(pageno, baseAddr + Control_reg); |
1967 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
1968 | len = tty_prepare_flip_string(tty, &dst, |
1969 | min(Page_size - pageofs, count)); | |
1970 | memcpy_fromio(dst, ofs, len); | |
1971 | ||
1972 | count -= len; | |
1973 | pageofs = (pageofs + len) & Page_mask; | |
1974 | if (pageofs == 0 && ++pageno == epage) | |
1da177e4 | 1975 | pageno = spage; |
2108eba5 JS |
1976 | } |
1977 | head = (head + total) & rx_mask; | |
1da177e4 | 1978 | } |
2108eba5 JS |
1979 | writew(head, ofsAddr + RXrptr); |
1980 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
1da177e4 | 1981 | moxaLowWaterChk = 1; |
b4173f45 | 1982 | port->lowChkFlag = 1; |
1da177e4 | 1983 | } |
2108eba5 | 1984 | return total; |
1da177e4 LT |
1985 | } |
1986 | ||
1987 | ||
b4173f45 | 1988 | static int MoxaPortTxQueue(struct moxa_port *port) |
1da177e4 | 1989 | { |
b4173f45 | 1990 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 1991 | u16 rptr, wptr, mask; |
1da177e4 | 1992 | |
1da177e4 LT |
1993 | rptr = readw(ofsAddr + TXrptr); |
1994 | wptr = readw(ofsAddr + TXwptr); | |
1995 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 1996 | return (wptr - rptr) & mask; |
1da177e4 LT |
1997 | } |
1998 | ||
b4173f45 | 1999 | static int MoxaPortTxFree(struct moxa_port *port) |
1da177e4 | 2000 | { |
b4173f45 | 2001 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2002 | u16 rptr, wptr, mask; |
1da177e4 | 2003 | |
1da177e4 LT |
2004 | rptr = readw(ofsAddr + TXrptr); |
2005 | wptr = readw(ofsAddr + TXwptr); | |
2006 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2007 | return mask - ((wptr - rptr) & mask); |
1da177e4 LT |
2008 | } |
2009 | ||
b4173f45 | 2010 | static int MoxaPortRxQueue(struct moxa_port *port) |
1da177e4 | 2011 | { |
b4173f45 | 2012 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2013 | u16 rptr, wptr, mask; |
1da177e4 | 2014 | |
1da177e4 LT |
2015 | rptr = readw(ofsAddr + RXrptr); |
2016 | wptr = readw(ofsAddr + RXwptr); | |
2017 | mask = readw(ofsAddr + RX_mask); | |
2108eba5 | 2018 | return (wptr - rptr) & mask; |
1da177e4 LT |
2019 | } |
2020 | ||
b4173f45 | 2021 | static void MoxaPortTxDisable(struct moxa_port *port) |
1da177e4 | 2022 | { |
b4173f45 | 2023 | moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); |
1da177e4 LT |
2024 | } |
2025 | ||
b4173f45 | 2026 | static void MoxaPortTxEnable(struct moxa_port *port) |
1da177e4 | 2027 | { |
b4173f45 | 2028 | moxafunc(port->tableAddr, FC_SetXonState, Magic_code); |
1da177e4 LT |
2029 | } |
2030 | ||
8f8ecbad | 2031 | static int moxa_get_serial_info(struct moxa_port *info, |
eaa95a8d | 2032 | struct serial_struct __user *retinfo) |
1da177e4 | 2033 | { |
eaa95a8d JS |
2034 | struct serial_struct tmp = { |
2035 | .type = info->type, | |
9de6a51f AC |
2036 | .line = info->port.tty->index, |
2037 | .flags = info->port.flags, | |
eaa95a8d | 2038 | .baud_base = 921600, |
44b7d1b3 | 2039 | .close_delay = info->port.close_delay |
eaa95a8d JS |
2040 | }; |
2041 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; | |
1da177e4 LT |
2042 | } |
2043 | ||
2044 | ||
8f8ecbad | 2045 | static int moxa_set_serial_info(struct moxa_port *info, |
eaa95a8d | 2046 | struct serial_struct __user *new_info) |
1da177e4 LT |
2047 | { |
2048 | struct serial_struct new_serial; | |
2049 | ||
eaa95a8d | 2050 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
1da177e4 LT |
2051 | return -EFAULT; |
2052 | ||
eaa95a8d JS |
2053 | if (new_serial.irq != 0 || new_serial.port != 0 || |
2054 | new_serial.custom_divisor != 0 || | |
2055 | new_serial.baud_base != 921600) | |
2056 | return -EPERM; | |
1da177e4 LT |
2057 | |
2058 | if (!capable(CAP_SYS_ADMIN)) { | |
2059 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
9de6a51f | 2060 | (info->port.flags & ~ASYNC_USR_MASK))) |
eaa95a8d JS |
2061 | return -EPERM; |
2062 | } else | |
44b7d1b3 | 2063 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
1da177e4 LT |
2064 | |
2065 | new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); | |
9de6a51f | 2066 | new_serial.flags |= (info->port.flags & ASYNC_FLAGS); |
1da177e4 | 2067 | |
eaa95a8d | 2068 | MoxaSetFifo(info, new_serial.type == PORT_16550A); |
1da177e4 LT |
2069 | |
2070 | info->type = new_serial.type; | |
eaa95a8d | 2071 | return 0; |
1da177e4 LT |
2072 | } |
2073 | ||
2074 | ||
2075 | ||
2076 | /***************************************************************************** | |
2077 | * Static local functions: * | |
2078 | *****************************************************************************/ | |
1da177e4 | 2079 | |
b4173f45 | 2080 | static void MoxaSetFifo(struct moxa_port *port, int enable) |
1da177e4 | 2081 | { |
b4173f45 | 2082 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
2083 | |
2084 | if (!enable) { | |
2085 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); | |
2086 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); | |
2087 | } else { | |
2088 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); | |
2089 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); | |
2090 | } | |
2091 | } |