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> | |
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 { |
b4173f45 | 133 | struct moxa_board_conf *board; |
7bcf97d1 JS |
134 | struct tty_struct *tty; |
135 | void __iomem *tableAddr; | |
136 | ||
1da177e4 | 137 | int type; |
1da177e4 | 138 | int close_delay; |
a8f5cda0 | 139 | unsigned int count; |
1da177e4 | 140 | int asyncflags; |
1da177e4 | 141 | int cflag; |
7bcf97d1 | 142 | unsigned long statusflags; |
1da177e4 | 143 | wait_queue_head_t open_wait; |
1da177e4 | 144 | |
7bcf97d1 JS |
145 | u8 DCDState; |
146 | u8 lineCtrl; | |
147 | u8 lowChkFlag; | |
8f8ecbad | 148 | }; |
1da177e4 | 149 | |
74d7d97b JS |
150 | struct mon_str { |
151 | int tick; | |
152 | int rxcnt[MAX_PORTS]; | |
153 | int txcnt[MAX_PORTS]; | |
154 | }; | |
155 | ||
1da177e4 LT |
156 | /* statusflags */ |
157 | #define TXSTOPPED 0x1 | |
158 | #define LOWWAIT 0x2 | |
159 | #define EMPTYWAIT 0x4 | |
160 | #define THROTTLE 0x8 | |
161 | ||
1da177e4 LT |
162 | #define SERIAL_DO_RESTART |
163 | ||
1da177e4 LT |
164 | #define WAKEUP_CHARS 256 |
165 | ||
1da177e4 | 166 | static int ttymajor = MOXAMAJOR; |
74d7d97b JS |
167 | static struct mon_str moxaLog; |
168 | static unsigned int moxaFuncTout = HZ / 2; | |
7bcf97d1 | 169 | static unsigned int moxaLowWaterChk; |
a8f5cda0 | 170 | static DEFINE_MUTEX(moxa_openlock); |
1da177e4 LT |
171 | /* Variables for insmod */ |
172 | #ifdef MODULE | |
d353eca4 JS |
173 | static unsigned long baseaddr[MAX_BOARDS]; |
174 | static unsigned int type[MAX_BOARDS]; | |
175 | static unsigned int numports[MAX_BOARDS]; | |
1da177e4 LT |
176 | #endif |
177 | ||
178 | MODULE_AUTHOR("William Chen"); | |
179 | MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); | |
180 | MODULE_LICENSE("GPL"); | |
181 | #ifdef MODULE | |
d353eca4 JS |
182 | module_param_array(type, uint, NULL, 0); |
183 | MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); | |
184 | module_param_array(baseaddr, ulong, NULL, 0); | |
185 | MODULE_PARM_DESC(baseaddr, "base address"); | |
186 | module_param_array(numports, uint, NULL, 0); | |
187 | MODULE_PARM_DESC(numports, "numports (ignored for C218)"); | |
1da177e4 LT |
188 | #endif |
189 | module_param(ttymajor, int, 0); | |
1da177e4 | 190 | |
1da177e4 LT |
191 | /* |
192 | * static functions: | |
193 | */ | |
1da177e4 LT |
194 | static int moxa_open(struct tty_struct *, struct file *); |
195 | static void moxa_close(struct tty_struct *, struct file *); | |
196 | static int moxa_write(struct tty_struct *, const unsigned char *, int); | |
197 | static int moxa_write_room(struct tty_struct *); | |
198 | static void moxa_flush_buffer(struct tty_struct *); | |
199 | static int moxa_chars_in_buffer(struct tty_struct *); | |
1da177e4 LT |
200 | static void moxa_throttle(struct tty_struct *); |
201 | static void moxa_unthrottle(struct tty_struct *); | |
606d099c | 202 | static void moxa_set_termios(struct tty_struct *, struct ktermios *); |
1da177e4 LT |
203 | static void moxa_stop(struct tty_struct *); |
204 | static void moxa_start(struct tty_struct *); | |
205 | static void moxa_hangup(struct tty_struct *); | |
206 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file); | |
207 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
208 | unsigned int set, unsigned int clear); | |
209 | static void moxa_poll(unsigned long); | |
db1acaa6 | 210 | static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); |
6f56b658 | 211 | static void moxa_setup_empty_event(struct tty_struct *); |
6f56b658 | 212 | static void moxa_shut_down(struct moxa_port *); |
1da177e4 LT |
213 | /* |
214 | * moxa board interface functions: | |
215 | */ | |
b4173f45 JS |
216 | static void MoxaPortEnable(struct moxa_port *); |
217 | static void MoxaPortDisable(struct moxa_port *); | |
218 | static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); | |
219 | static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); | |
220 | static void MoxaPortLineCtrl(struct moxa_port *, int, int); | |
221 | static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); | |
222 | static int MoxaPortLineStatus(struct moxa_port *); | |
b4173f45 | 223 | static void MoxaPortFlushData(struct moxa_port *, int); |
2108eba5 | 224 | static int MoxaPortWriteData(struct moxa_port *, const unsigned char *, int); |
7bcf97d1 | 225 | static int MoxaPortReadData(struct moxa_port *); |
b4173f45 JS |
226 | static int MoxaPortTxQueue(struct moxa_port *); |
227 | static int MoxaPortRxQueue(struct moxa_port *); | |
228 | static int MoxaPortTxFree(struct moxa_port *); | |
229 | static void MoxaPortTxDisable(struct moxa_port *); | |
230 | static void MoxaPortTxEnable(struct moxa_port *); | |
8f8ecbad JS |
231 | static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); |
232 | static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); | |
b4173f45 | 233 | static void MoxaSetFifo(struct moxa_port *port, int enable); |
1da177e4 | 234 | |
74d7d97b JS |
235 | /* |
236 | * I/O functions | |
237 | */ | |
238 | ||
239 | static void moxa_wait_finish(void __iomem *ofsAddr) | |
240 | { | |
241 | unsigned long end = jiffies + moxaFuncTout; | |
242 | ||
243 | while (readw(ofsAddr + FuncCode) != 0) | |
244 | if (time_after(jiffies, end)) | |
245 | return; | |
246 | if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) | |
247 | printk(KERN_WARNING "moxa function expired\n"); | |
248 | } | |
249 | ||
eaa95a8d | 250 | static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) |
74d7d97b JS |
251 | { |
252 | writew(arg, ofsAddr + FuncArg); | |
253 | writew(cmd, ofsAddr + FuncCode); | |
254 | moxa_wait_finish(ofsAddr); | |
255 | } | |
256 | ||
7bcf97d1 JS |
257 | static void moxa_low_water_check(void __iomem *ofsAddr) |
258 | { | |
259 | u16 rptr, wptr, mask, len; | |
260 | ||
261 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
262 | rptr = readw(ofsAddr + RXrptr); | |
263 | wptr = readw(ofsAddr + RXwptr); | |
264 | mask = readw(ofsAddr + RX_mask); | |
265 | len = (wptr - rptr) & mask; | |
266 | if (len <= Low_water) | |
267 | moxafunc(ofsAddr, FC_SendXon, 0); | |
268 | } | |
269 | } | |
270 | ||
74d7d97b JS |
271 | /* |
272 | * TTY operations | |
273 | */ | |
274 | ||
275 | static int moxa_ioctl(struct tty_struct *tty, struct file *file, | |
276 | unsigned int cmd, unsigned long arg) | |
277 | { | |
278 | struct moxa_port *ch = tty->driver_data; | |
279 | void __user *argp = (void __user *)arg; | |
a8f5cda0 | 280 | int status, ret = 0; |
74d7d97b JS |
281 | |
282 | if (tty->index == MAX_PORTS) { | |
283 | if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && | |
284 | cmd != MOXA_GETMSTATUS) | |
285 | return -EINVAL; | |
286 | } else if (!ch) | |
287 | return -ENODEV; | |
288 | ||
289 | switch (cmd) { | |
290 | case MOXA_GETDATACOUNT: | |
291 | moxaLog.tick = jiffies; | |
a8f5cda0 JS |
292 | if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) |
293 | ret = -EFAULT; | |
294 | break; | |
74d7d97b JS |
295 | case MOXA_FLUSH_QUEUE: |
296 | MoxaPortFlushData(ch, arg); | |
a8f5cda0 | 297 | break; |
74d7d97b JS |
298 | case MOXA_GET_IOQUEUE: { |
299 | struct moxaq_str __user *argm = argp; | |
300 | struct moxaq_str tmp; | |
301 | struct moxa_port *p; | |
302 | unsigned int i, j; | |
303 | ||
a8f5cda0 | 304 | mutex_lock(&moxa_openlock); |
74d7d97b JS |
305 | for (i = 0; i < MAX_BOARDS; i++) { |
306 | p = moxa_boards[i].ports; | |
307 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
308 | memset(&tmp, 0, sizeof(tmp)); | |
309 | if (moxa_boards[i].ready) { | |
310 | tmp.inq = MoxaPortRxQueue(p); | |
311 | tmp.outq = MoxaPortTxQueue(p); | |
312 | } | |
a8f5cda0 JS |
313 | if (copy_to_user(argm, &tmp, sizeof(tmp))) { |
314 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 315 | return -EFAULT; |
a8f5cda0 | 316 | } |
74d7d97b JS |
317 | } |
318 | } | |
a8f5cda0 JS |
319 | mutex_unlock(&moxa_openlock); |
320 | break; | |
74d7d97b JS |
321 | } case MOXA_GET_OQUEUE: |
322 | status = MoxaPortTxQueue(ch); | |
a8f5cda0 JS |
323 | ret = put_user(status, (unsigned long __user *)argp); |
324 | break; | |
74d7d97b JS |
325 | case MOXA_GET_IQUEUE: |
326 | status = MoxaPortRxQueue(ch); | |
a8f5cda0 JS |
327 | ret = put_user(status, (unsigned long __user *)argp); |
328 | break; | |
74d7d97b JS |
329 | case MOXA_GETMSTATUS: { |
330 | struct mxser_mstatus __user *argm = argp; | |
331 | struct mxser_mstatus tmp; | |
332 | struct moxa_port *p; | |
333 | unsigned int i, j; | |
334 | ||
a8f5cda0 | 335 | mutex_lock(&moxa_openlock); |
74d7d97b JS |
336 | for (i = 0; i < MAX_BOARDS; i++) { |
337 | p = moxa_boards[i].ports; | |
338 | for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { | |
339 | memset(&tmp, 0, sizeof(tmp)); | |
340 | if (!moxa_boards[i].ready) | |
341 | goto copy; | |
342 | ||
343 | status = MoxaPortLineStatus(p); | |
344 | if (status & 1) | |
345 | tmp.cts = 1; | |
346 | if (status & 2) | |
347 | tmp.dsr = 1; | |
348 | if (status & 4) | |
349 | tmp.dcd = 1; | |
350 | ||
351 | if (!p->tty || !p->tty->termios) | |
352 | tmp.cflag = p->cflag; | |
353 | else | |
354 | tmp.cflag = p->tty->termios->c_cflag; | |
355 | copy: | |
a8f5cda0 JS |
356 | if (copy_to_user(argm, &tmp, sizeof(tmp))) { |
357 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 358 | return -EFAULT; |
a8f5cda0 | 359 | } |
74d7d97b JS |
360 | } |
361 | } | |
a8f5cda0 JS |
362 | mutex_unlock(&moxa_openlock); |
363 | break; | |
74d7d97b JS |
364 | } |
365 | case TIOCGSERIAL: | |
a8f5cda0 JS |
366 | mutex_lock(&moxa_openlock); |
367 | ret = moxa_get_serial_info(ch, argp); | |
368 | mutex_unlock(&moxa_openlock); | |
369 | break; | |
74d7d97b | 370 | case TIOCSSERIAL: |
a8f5cda0 JS |
371 | mutex_lock(&moxa_openlock); |
372 | ret = moxa_set_serial_info(ch, argp); | |
373 | mutex_unlock(&moxa_openlock); | |
374 | break; | |
375 | default: | |
376 | ret = -ENOIOCTLCMD; | |
74d7d97b | 377 | } |
a8f5cda0 | 378 | return ret; |
74d7d97b JS |
379 | } |
380 | ||
381 | static void moxa_break_ctl(struct tty_struct *tty, int state) | |
382 | { | |
383 | struct moxa_port *port = tty->driver_data; | |
384 | ||
385 | moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, | |
386 | Magic_code); | |
387 | } | |
388 | ||
b68e31d0 | 389 | static const struct tty_operations moxa_ops = { |
1da177e4 LT |
390 | .open = moxa_open, |
391 | .close = moxa_close, | |
392 | .write = moxa_write, | |
393 | .write_room = moxa_write_room, | |
394 | .flush_buffer = moxa_flush_buffer, | |
395 | .chars_in_buffer = moxa_chars_in_buffer, | |
1da177e4 LT |
396 | .ioctl = moxa_ioctl, |
397 | .throttle = moxa_throttle, | |
398 | .unthrottle = moxa_unthrottle, | |
399 | .set_termios = moxa_set_termios, | |
400 | .stop = moxa_stop, | |
401 | .start = moxa_start, | |
402 | .hangup = moxa_hangup, | |
74d7d97b | 403 | .break_ctl = moxa_break_ctl, |
1da177e4 LT |
404 | .tiocmget = moxa_tiocmget, |
405 | .tiocmset = moxa_tiocmset, | |
406 | }; | |
407 | ||
aa7e5221 | 408 | static struct tty_driver *moxaDriver; |
aa7e5221 | 409 | static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); |
34af946a | 410 | static DEFINE_SPINLOCK(moxa_lock); |
33f0f88f | 411 | |
74d7d97b JS |
412 | /* |
413 | * HW init | |
414 | */ | |
415 | ||
03718234 JS |
416 | static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) |
417 | { | |
418 | switch (brd->boardType) { | |
419 | case MOXA_BOARD_C218_ISA: | |
420 | case MOXA_BOARD_C218_PCI: | |
421 | if (model != 1) | |
422 | goto err; | |
423 | break; | |
424 | case MOXA_BOARD_CP204J: | |
425 | if (model != 3) | |
426 | goto err; | |
427 | break; | |
428 | default: | |
429 | if (model != 2) | |
430 | goto err; | |
431 | break; | |
432 | } | |
433 | return 0; | |
434 | err: | |
435 | return -EINVAL; | |
436 | } | |
437 | ||
438 | static int moxa_check_fw(const void *ptr) | |
439 | { | |
440 | const __le16 *lptr = ptr; | |
441 | ||
442 | if (*lptr != cpu_to_le16(0x7980)) | |
443 | return -EINVAL; | |
444 | ||
445 | return 0; | |
446 | } | |
447 | ||
448 | static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, | |
449 | size_t len) | |
450 | { | |
451 | void __iomem *baseAddr = brd->basemem; | |
452 | u16 tmp; | |
453 | ||
454 | writeb(HW_reset, baseAddr + Control_reg); /* reset */ | |
455 | msleep(10); | |
456 | memset_io(baseAddr, 0, 4096); | |
457 | memcpy_toio(baseAddr, buf, len); /* download BIOS */ | |
458 | writeb(0, baseAddr + Control_reg); /* restart */ | |
459 | ||
460 | msleep(2000); | |
461 | ||
462 | switch (brd->boardType) { | |
463 | case MOXA_BOARD_C218_ISA: | |
464 | case MOXA_BOARD_C218_PCI: | |
465 | tmp = readw(baseAddr + C218_key); | |
466 | if (tmp != C218_KeyCode) | |
467 | goto err; | |
468 | break; | |
469 | case MOXA_BOARD_CP204J: | |
470 | tmp = readw(baseAddr + C218_key); | |
471 | if (tmp != CP204J_KeyCode) | |
472 | goto err; | |
473 | break; | |
474 | default: | |
475 | tmp = readw(baseAddr + C320_key); | |
476 | if (tmp != C320_KeyCode) | |
477 | goto err; | |
478 | tmp = readw(baseAddr + C320_status); | |
479 | if (tmp != STS_init) { | |
eaa95a8d | 480 | printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " |
03718234 JS |
481 | "module not found\n"); |
482 | return -EIO; | |
483 | } | |
484 | break; | |
485 | } | |
486 | ||
487 | return 0; | |
488 | err: | |
eaa95a8d | 489 | printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); |
03718234 JS |
490 | return -EIO; |
491 | } | |
492 | ||
493 | static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, | |
494 | size_t len) | |
495 | { | |
496 | void __iomem *baseAddr = brd->basemem; | |
497 | ||
498 | if (len < 7168) { | |
eaa95a8d | 499 | printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); |
03718234 JS |
500 | return -EINVAL; |
501 | } | |
502 | ||
503 | writew(len - 7168 - 2, baseAddr + C320bapi_len); | |
504 | writeb(1, baseAddr + Control_reg); /* Select Page 1 */ | |
505 | memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); | |
506 | writeb(2, baseAddr + Control_reg); /* Select Page 2 */ | |
507 | memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
5292bcd3 | 512 | static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, |
03718234 JS |
513 | size_t len) |
514 | { | |
515 | void __iomem *baseAddr = brd->basemem; | |
516 | const u16 *uptr = ptr; | |
517 | size_t wlen, len2, j; | |
5292bcd3 | 518 | unsigned long key, loadbuf, loadlen, checksum, checksum_ok; |
08d01c79 | 519 | unsigned int i, retry; |
03718234 JS |
520 | u16 usum, keycode; |
521 | ||
5292bcd3 JS |
522 | keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : |
523 | C218_KeyCode; | |
03718234 | 524 | |
5292bcd3 JS |
525 | switch (brd->boardType) { |
526 | case MOXA_BOARD_CP204J: | |
527 | case MOXA_BOARD_C218_ISA: | |
528 | case MOXA_BOARD_C218_PCI: | |
529 | key = C218_key; | |
530 | loadbuf = C218_LoadBuf; | |
531 | loadlen = C218DLoad_len; | |
532 | checksum = C218check_sum; | |
533 | checksum_ok = C218chksum_ok; | |
534 | break; | |
535 | default: | |
536 | key = C320_key; | |
537 | keycode = C320_KeyCode; | |
538 | loadbuf = C320_LoadBuf; | |
539 | loadlen = C320DLoad_len; | |
540 | checksum = C320check_sum; | |
541 | checksum_ok = C320chksum_ok; | |
542 | break; | |
03718234 | 543 | } |
03718234 JS |
544 | |
545 | usum = 0; | |
546 | wlen = len >> 1; | |
547 | for (i = 0; i < wlen; i++) | |
548 | usum += le16_to_cpu(uptr[i]); | |
549 | retry = 0; | |
550 | do { | |
551 | wlen = len >> 1; | |
552 | j = 0; | |
553 | while (wlen) { | |
554 | len2 = (wlen > 2048) ? 2048 : wlen; | |
555 | wlen -= len2; | |
5292bcd3 | 556 | memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); |
03718234 | 557 | j += len2 << 1; |
5292bcd3 JS |
558 | |
559 | writew(len2, baseAddr + loadlen); | |
560 | writew(0, baseAddr + key); | |
561 | for (i = 0; i < 100; i++) { | |
562 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
563 | break; |
564 | msleep(10); | |
565 | } | |
5292bcd3 | 566 | if (readw(baseAddr + key) != keycode) |
03718234 JS |
567 | return -EIO; |
568 | } | |
5292bcd3 JS |
569 | writew(0, baseAddr + loadlen); |
570 | writew(usum, baseAddr + checksum); | |
571 | writew(0, baseAddr + key); | |
572 | for (i = 0; i < 100; i++) { | |
573 | if (readw(baseAddr + key) == keycode) | |
03718234 JS |
574 | break; |
575 | msleep(10); | |
576 | } | |
577 | retry++; | |
5292bcd3 JS |
578 | } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); |
579 | if (readb(baseAddr + checksum_ok) != 1) | |
03718234 JS |
580 | return -EIO; |
581 | ||
5292bcd3 | 582 | writew(0, baseAddr + key); |
03718234 JS |
583 | for (i = 0; i < 600; i++) { |
584 | if (readw(baseAddr + Magic_no) == Magic_code) | |
585 | break; | |
586 | msleep(10); | |
587 | } | |
588 | if (readw(baseAddr + Magic_no) != Magic_code) | |
589 | return -EIO; | |
590 | ||
08d01c79 | 591 | if (MOXA_IS_320(brd)) { |
5292bcd3 JS |
592 | if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ |
593 | writew(0x3800, baseAddr + TMS320_PORT1); | |
594 | writew(0x3900, baseAddr + TMS320_PORT2); | |
595 | writew(28499, baseAddr + TMS320_CLOCK); | |
596 | } else { | |
597 | writew(0x3200, baseAddr + TMS320_PORT1); | |
598 | writew(0x3400, baseAddr + TMS320_PORT2); | |
599 | writew(19999, baseAddr + TMS320_CLOCK); | |
600 | } | |
03718234 JS |
601 | } |
602 | writew(1, baseAddr + Disable_IRQ); | |
603 | writew(0, baseAddr + Magic_no); | |
604 | for (i = 0; i < 500; i++) { | |
605 | if (readw(baseAddr + Magic_no) == Magic_code) | |
606 | break; | |
607 | msleep(10); | |
608 | } | |
609 | if (readw(baseAddr + Magic_no) != Magic_code) | |
610 | return -EIO; | |
611 | ||
08d01c79 | 612 | if (MOXA_IS_320(brd)) { |
5292bcd3 JS |
613 | j = readw(baseAddr + Module_cnt); |
614 | if (j <= 0) | |
615 | return -EIO; | |
616 | brd->numPorts = j * 8; | |
617 | writew(j, baseAddr + Module_no); | |
618 | writew(0, baseAddr + Magic_no); | |
619 | for (i = 0; i < 600; i++) { | |
620 | if (readw(baseAddr + Magic_no) == Magic_code) | |
621 | break; | |
622 | msleep(10); | |
623 | } | |
624 | if (readw(baseAddr + Magic_no) != Magic_code) | |
625 | return -EIO; | |
03718234 | 626 | } |
03718234 JS |
627 | brd->intNdx = baseAddr + IRQindex; |
628 | brd->intPend = baseAddr + IRQpending; | |
629 | brd->intTable = baseAddr + IRQtable; | |
630 | ||
631 | return 0; | |
632 | } | |
633 | ||
634 | static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, | |
635 | size_t len) | |
636 | { | |
637 | void __iomem *ofsAddr, *baseAddr = brd->basemem; | |
638 | struct moxa_port *port; | |
639 | int retval, i; | |
640 | ||
641 | if (len % 2) { | |
eaa95a8d | 642 | printk(KERN_ERR "MOXA: bios length is not even\n"); |
03718234 JS |
643 | return -EINVAL; |
644 | } | |
645 | ||
5292bcd3 JS |
646 | retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ |
647 | if (retval) | |
648 | return retval; | |
649 | ||
03718234 JS |
650 | switch (brd->boardType) { |
651 | case MOXA_BOARD_C218_ISA: | |
652 | case MOXA_BOARD_C218_PCI: | |
653 | case MOXA_BOARD_CP204J: | |
03718234 JS |
654 | port = brd->ports; |
655 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 656 | port->board = brd; |
03718234 JS |
657 | port->DCDState = 0; |
658 | port->tableAddr = baseAddr + Extern_table + | |
659 | Extern_size * i; | |
660 | ofsAddr = port->tableAddr; | |
661 | writew(C218rx_mask, ofsAddr + RX_mask); | |
662 | writew(C218tx_mask, ofsAddr + TX_mask); | |
663 | writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); | |
664 | writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); | |
665 | ||
666 | writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); | |
667 | writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); | |
668 | ||
669 | } | |
670 | break; | |
671 | default: | |
03718234 JS |
672 | port = brd->ports; |
673 | for (i = 0; i < brd->numPorts; i++, port++) { | |
b4173f45 | 674 | port->board = brd; |
03718234 JS |
675 | port->DCDState = 0; |
676 | port->tableAddr = baseAddr + Extern_table + | |
677 | Extern_size * i; | |
678 | ofsAddr = port->tableAddr; | |
679 | switch (brd->numPorts) { | |
680 | case 8: | |
681 | writew(C320p8rx_mask, ofsAddr + RX_mask); | |
682 | writew(C320p8tx_mask, ofsAddr + TX_mask); | |
683 | writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); | |
684 | writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); | |
685 | writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); | |
686 | writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); | |
687 | ||
688 | break; | |
689 | case 16: | |
690 | writew(C320p16rx_mask, ofsAddr + RX_mask); | |
691 | writew(C320p16tx_mask, ofsAddr + TX_mask); | |
692 | writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); | |
693 | writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); | |
694 | writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); | |
695 | writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); | |
696 | break; | |
697 | ||
698 | case 24: | |
699 | writew(C320p24rx_mask, ofsAddr + RX_mask); | |
700 | writew(C320p24tx_mask, ofsAddr + TX_mask); | |
701 | writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); | |
702 | writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); | |
703 | writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); | |
704 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
705 | break; | |
706 | case 32: | |
707 | writew(C320p32rx_mask, ofsAddr + RX_mask); | |
708 | writew(C320p32tx_mask, ofsAddr + TX_mask); | |
709 | writew(C320p32tx_ofs, ofsAddr + Ofs_txb); | |
710 | writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); | |
711 | writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); | |
712 | writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); | |
713 | writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); | |
714 | break; | |
715 | } | |
716 | } | |
717 | break; | |
718 | } | |
03718234 JS |
719 | return 0; |
720 | } | |
721 | ||
722 | static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) | |
723 | { | |
724 | void *ptr = fw->data; | |
725 | char rsn[64]; | |
726 | u16 lens[5]; | |
727 | size_t len; | |
728 | unsigned int a, lenp, lencnt; | |
729 | int ret = -EINVAL; | |
730 | struct { | |
731 | __le32 magic; /* 0x34303430 */ | |
732 | u8 reserved1[2]; | |
733 | u8 type; /* UNIX = 3 */ | |
734 | u8 model; /* C218T=1, C320T=2, CP204=3 */ | |
735 | u8 reserved2[8]; | |
736 | __le16 len[5]; | |
737 | } *hdr = ptr; | |
738 | ||
739 | BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); | |
740 | ||
741 | if (fw->size < MOXA_FW_HDRLEN) { | |
742 | strcpy(rsn, "too short (even header won't fit)"); | |
743 | goto err; | |
744 | } | |
745 | if (hdr->magic != cpu_to_le32(0x30343034)) { | |
746 | sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); | |
747 | goto err; | |
748 | } | |
749 | if (hdr->type != 3) { | |
750 | sprintf(rsn, "not for linux, type is %u", hdr->type); | |
751 | goto err; | |
752 | } | |
753 | if (moxa_check_fw_model(brd, hdr->model)) { | |
754 | sprintf(rsn, "not for this card, model is %u", hdr->model); | |
755 | goto err; | |
756 | } | |
757 | ||
758 | len = MOXA_FW_HDRLEN; | |
759 | lencnt = hdr->model == 2 ? 5 : 3; | |
760 | for (a = 0; a < ARRAY_SIZE(lens); a++) { | |
761 | lens[a] = le16_to_cpu(hdr->len[a]); | |
762 | if (lens[a] && len + lens[a] <= fw->size && | |
763 | moxa_check_fw(&fw->data[len])) | |
eaa95a8d | 764 | printk(KERN_WARNING "MOXA firmware: unexpected input " |
03718234 JS |
765 | "at offset %u, but going on\n", (u32)len); |
766 | if (!lens[a] && a < lencnt) { | |
767 | sprintf(rsn, "too few entries in fw file"); | |
768 | goto err; | |
769 | } | |
770 | len += lens[a]; | |
771 | } | |
772 | ||
773 | if (len != fw->size) { | |
774 | sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, | |
775 | (u32)len); | |
776 | goto err; | |
777 | } | |
778 | ||
779 | ptr += MOXA_FW_HDRLEN; | |
780 | lenp = 0; /* bios */ | |
781 | ||
782 | strcpy(rsn, "read above"); | |
783 | ||
784 | ret = moxa_load_bios(brd, ptr, lens[lenp]); | |
785 | if (ret) | |
786 | goto err; | |
787 | ||
788 | /* we skip the tty section (lens[1]), since we don't need it */ | |
789 | ptr += lens[lenp] + lens[lenp + 1]; | |
790 | lenp += 2; /* comm */ | |
791 | ||
792 | if (hdr->model == 2) { | |
793 | ret = moxa_load_320b(brd, ptr, lens[lenp]); | |
794 | if (ret) | |
795 | goto err; | |
796 | /* skip another tty */ | |
797 | ptr += lens[lenp] + lens[lenp + 1]; | |
798 | lenp += 2; | |
799 | } | |
800 | ||
801 | ret = moxa_load_code(brd, ptr, lens[lenp]); | |
802 | if (ret) | |
803 | goto err; | |
804 | ||
805 | return 0; | |
806 | err: | |
807 | printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); | |
808 | return ret; | |
809 | } | |
810 | ||
811 | static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) | |
812 | { | |
813 | const struct firmware *fw; | |
814 | const char *file; | |
810ab09b JS |
815 | struct moxa_port *p; |
816 | unsigned int i; | |
03718234 JS |
817 | int ret; |
818 | ||
810ab09b JS |
819 | brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), |
820 | GFP_KERNEL); | |
821 | if (brd->ports == NULL) { | |
822 | printk(KERN_ERR "cannot allocate memory for ports\n"); | |
823 | ret = -ENOMEM; | |
824 | goto err; | |
825 | } | |
826 | ||
827 | for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { | |
828 | p->type = PORT_16550A; | |
829 | p->close_delay = 5 * HZ / 10; | |
830 | p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; | |
831 | init_waitqueue_head(&p->open_wait); | |
810ab09b JS |
832 | } |
833 | ||
03718234 JS |
834 | switch (brd->boardType) { |
835 | case MOXA_BOARD_C218_ISA: | |
836 | case MOXA_BOARD_C218_PCI: | |
837 | file = "c218tunx.cod"; | |
838 | break; | |
839 | case MOXA_BOARD_CP204J: | |
840 | file = "cp204unx.cod"; | |
841 | break; | |
842 | default: | |
843 | file = "c320tunx.cod"; | |
844 | break; | |
845 | } | |
846 | ||
847 | ret = request_firmware(&fw, file, dev); | |
848 | if (ret) { | |
ec09cd56 JS |
849 | printk(KERN_ERR "MOXA: request_firmware failed. Make sure " |
850 | "you've placed '%s' file into your firmware " | |
851 | "loader directory (e.g. /lib/firmware)\n", | |
852 | file); | |
810ab09b | 853 | goto err_free; |
03718234 JS |
854 | } |
855 | ||
856 | ret = moxa_load_fw(brd, fw); | |
857 | ||
858 | release_firmware(fw); | |
810ab09b JS |
859 | |
860 | if (ret) | |
861 | goto err_free; | |
862 | ||
2a541341 | 863 | spin_lock_bh(&moxa_lock); |
810ab09b | 864 | brd->ready = 1; |
0bcc4caa JS |
865 | if (!timer_pending(&moxaTimer)) |
866 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
2a541341 | 867 | spin_unlock_bh(&moxa_lock); |
0bcc4caa | 868 | |
810ab09b JS |
869 | return 0; |
870 | err_free: | |
871 | kfree(brd->ports); | |
872 | err: | |
03718234 JS |
873 | return ret; |
874 | } | |
875 | ||
810ab09b JS |
876 | static void moxa_board_deinit(struct moxa_board_conf *brd) |
877 | { | |
a8f5cda0 JS |
878 | unsigned int a, opened; |
879 | ||
880 | mutex_lock(&moxa_openlock); | |
7bcf97d1 | 881 | spin_lock_bh(&moxa_lock); |
810ab09b | 882 | brd->ready = 0; |
7bcf97d1 | 883 | spin_unlock_bh(&moxa_lock); |
a8f5cda0 JS |
884 | |
885 | /* pci hot-un-plug support */ | |
886 | for (a = 0; a < brd->numPorts; a++) | |
887 | if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) | |
888 | tty_hangup(brd->ports[a].tty); | |
889 | while (1) { | |
890 | opened = 0; | |
891 | for (a = 0; a < brd->numPorts; a++) | |
892 | if (brd->ports[a].asyncflags & ASYNC_INITIALIZED) | |
893 | opened++; | |
894 | mutex_unlock(&moxa_openlock); | |
895 | if (!opened) | |
896 | break; | |
897 | msleep(50); | |
898 | mutex_lock(&moxa_openlock); | |
899 | } | |
900 | ||
810ab09b JS |
901 | iounmap(brd->basemem); |
902 | brd->basemem = NULL; | |
903 | kfree(brd->ports); | |
904 | } | |
905 | ||
1da177e4 | 906 | #ifdef CONFIG_PCI |
9cde5bf0 JS |
907 | static int __devinit moxa_pci_probe(struct pci_dev *pdev, |
908 | const struct pci_device_id *ent) | |
1da177e4 | 909 | { |
9cde5bf0 JS |
910 | struct moxa_board_conf *board; |
911 | unsigned int i; | |
912 | int board_type = ent->driver_data; | |
913 | int retval; | |
914 | ||
915 | retval = pci_enable_device(pdev); | |
7aeb95da JS |
916 | if (retval) { |
917 | dev_err(&pdev->dev, "can't enable pci device\n"); | |
9cde5bf0 | 918 | goto err; |
7aeb95da | 919 | } |
9cde5bf0 JS |
920 | |
921 | for (i = 0; i < MAX_BOARDS; i++) | |
922 | if (moxa_boards[i].basemem == NULL) | |
923 | break; | |
924 | ||
925 | retval = -ENODEV; | |
926 | if (i >= MAX_BOARDS) { | |
7aeb95da | 927 | dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " |
9cde5bf0 JS |
928 | "found. Board is ignored.\n", MAX_BOARDS); |
929 | goto err; | |
930 | } | |
931 | ||
932 | board = &moxa_boards[i]; | |
e46a5e3f JS |
933 | |
934 | retval = pci_request_region(pdev, 2, "moxa-base"); | |
935 | if (retval) { | |
936 | dev_err(&pdev->dev, "can't request pci region 2\n"); | |
937 | goto err; | |
938 | } | |
939 | ||
940 | board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000); | |
7aeb95da JS |
941 | if (board->basemem == NULL) { |
942 | dev_err(&pdev->dev, "can't remap io space 2\n"); | |
e46a5e3f | 943 | goto err_reg; |
7aeb95da | 944 | } |
9cde5bf0 | 945 | |
1da177e4 LT |
946 | board->boardType = board_type; |
947 | switch (board_type) { | |
948 | case MOXA_BOARD_C218_ISA: | |
949 | case MOXA_BOARD_C218_PCI: | |
950 | board->numPorts = 8; | |
951 | break; | |
952 | ||
953 | case MOXA_BOARD_CP204J: | |
954 | board->numPorts = 4; | |
955 | break; | |
956 | default: | |
957 | board->numPorts = 0; | |
958 | break; | |
959 | } | |
960 | board->busType = MOXA_BUS_TYPE_PCI; | |
a784bf7c | 961 | |
03718234 JS |
962 | retval = moxa_init_board(board, &pdev->dev); |
963 | if (retval) | |
964 | goto err_base; | |
965 | ||
9cde5bf0 | 966 | pci_set_drvdata(pdev, board); |
1da177e4 | 967 | |
bb9f910a JS |
968 | dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", |
969 | moxa_brdname[board_type - 1], board->numPorts); | |
970 | ||
eaa95a8d | 971 | return 0; |
03718234 JS |
972 | err_base: |
973 | iounmap(board->basemem); | |
974 | board->basemem = NULL; | |
e46a5e3f JS |
975 | err_reg: |
976 | pci_release_region(pdev, 2); | |
9cde5bf0 JS |
977 | err: |
978 | return retval; | |
979 | } | |
980 | ||
981 | static void __devexit moxa_pci_remove(struct pci_dev *pdev) | |
982 | { | |
983 | struct moxa_board_conf *brd = pci_get_drvdata(pdev); | |
984 | ||
810ab09b JS |
985 | moxa_board_deinit(brd); |
986 | ||
e46a5e3f | 987 | pci_release_region(pdev, 2); |
1da177e4 | 988 | } |
a784bf7c JS |
989 | |
990 | static struct pci_driver moxa_pci_driver = { | |
991 | .name = "moxa", | |
992 | .id_table = moxa_pcibrds, | |
993 | .probe = moxa_pci_probe, | |
994 | .remove = __devexit_p(moxa_pci_remove) | |
995 | }; | |
1da177e4 LT |
996 | #endif /* CONFIG_PCI */ |
997 | ||
998 | static int __init moxa_init(void) | |
999 | { | |
810ab09b | 1000 | unsigned int isabrds = 0; |
d353eca4 | 1001 | int retval = 0; |
1da177e4 | 1002 | |
7aeb95da JS |
1003 | printk(KERN_INFO "MOXA Intellio family driver version %s\n", |
1004 | MOXA_VERSION); | |
1da177e4 LT |
1005 | moxaDriver = alloc_tty_driver(MAX_PORTS + 1); |
1006 | if (!moxaDriver) | |
1007 | return -ENOMEM; | |
1008 | ||
1da177e4 | 1009 | moxaDriver->owner = THIS_MODULE; |
9b4e3b13 | 1010 | moxaDriver->name = "ttyMX"; |
1da177e4 LT |
1011 | moxaDriver->major = ttymajor; |
1012 | moxaDriver->minor_start = 0; | |
1013 | moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; | |
1014 | moxaDriver->subtype = SERIAL_TYPE_NORMAL; | |
1015 | moxaDriver->init_termios = tty_std_termios; | |
1da177e4 | 1016 | moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; |
606d099c AC |
1017 | moxaDriver->init_termios.c_ispeed = 9600; |
1018 | moxaDriver->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
1019 | moxaDriver->flags = TTY_DRIVER_REAL_RAW; |
1020 | tty_set_operations(moxaDriver, &moxa_ops); | |
1021 | ||
1da177e4 | 1022 | if (tty_register_driver(moxaDriver)) { |
eaa95a8d | 1023 | printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); |
1da177e4 LT |
1024 | put_tty_driver(moxaDriver); |
1025 | return -1; | |
1026 | } | |
1da177e4 | 1027 | |
d353eca4 | 1028 | /* Find the boards defined from module args. */ |
1da177e4 | 1029 | #ifdef MODULE |
d353eca4 JS |
1030 | { |
1031 | struct moxa_board_conf *brd = moxa_boards; | |
810ab09b | 1032 | unsigned int i; |
1da177e4 | 1033 | for (i = 0; i < MAX_BOARDS; i++) { |
d353eca4 JS |
1034 | if (!baseaddr[i]) |
1035 | break; | |
1036 | if (type[i] == MOXA_BOARD_C218_ISA || | |
1037 | type[i] == MOXA_BOARD_C320_ISA) { | |
7aeb95da | 1038 | pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", |
d353eca4 JS |
1039 | isabrds + 1, moxa_brdname[type[i] - 1], |
1040 | baseaddr[i]); | |
1041 | brd->boardType = type[i]; | |
1042 | brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : | |
1043 | numports[i]; | |
1044 | brd->busType = MOXA_BUS_TYPE_ISA; | |
1045 | brd->basemem = ioremap(baseaddr[i], 0x4000); | |
1046 | if (!brd->basemem) { | |
eaa95a8d | 1047 | printk(KERN_ERR "MOXA: can't remap %lx\n", |
d353eca4 | 1048 | baseaddr[i]); |
1da177e4 LT |
1049 | continue; |
1050 | } | |
03718234 JS |
1051 | if (moxa_init_board(brd, NULL)) { |
1052 | iounmap(brd->basemem); | |
1053 | brd->basemem = NULL; | |
1054 | continue; | |
1055 | } | |
d353eca4 | 1056 | |
bb9f910a JS |
1057 | printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " |
1058 | "ready (%u ports, firmware loaded)\n", | |
1059 | baseaddr[i], brd->numPorts); | |
1060 | ||
d353eca4 JS |
1061 | brd++; |
1062 | isabrds++; | |
1da177e4 LT |
1063 | } |
1064 | } | |
d353eca4 | 1065 | } |
1da177e4 | 1066 | #endif |
a784bf7c | 1067 | |
1da177e4 | 1068 | #ifdef CONFIG_PCI |
a784bf7c JS |
1069 | retval = pci_register_driver(&moxa_pci_driver); |
1070 | if (retval) { | |
eaa95a8d | 1071 | printk(KERN_ERR "Can't register MOXA pci driver!\n"); |
d353eca4 | 1072 | if (isabrds) |
a784bf7c | 1073 | retval = 0; |
1da177e4 LT |
1074 | } |
1075 | #endif | |
a784bf7c | 1076 | |
a784bf7c | 1077 | return retval; |
1da177e4 LT |
1078 | } |
1079 | ||
1080 | static void __exit moxa_exit(void) | |
1081 | { | |
eaa95a8d | 1082 | unsigned int i; |
1da177e4 | 1083 | |
9cde5bf0 | 1084 | #ifdef CONFIG_PCI |
a784bf7c | 1085 | pci_unregister_driver(&moxa_pci_driver); |
9cde5bf0 | 1086 | #endif |
a784bf7c | 1087 | |
810ab09b JS |
1088 | for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ |
1089 | if (moxa_boards[i].ready) | |
1090 | moxa_board_deinit(&moxa_boards[i]); | |
2a541341 JS |
1091 | |
1092 | del_timer_sync(&moxaTimer); | |
1093 | ||
1094 | if (tty_unregister_driver(moxaDriver)) | |
1095 | printk(KERN_ERR "Couldn't unregister MOXA Intellio family " | |
1096 | "serial driver\n"); | |
1097 | put_tty_driver(moxaDriver); | |
1da177e4 LT |
1098 | } |
1099 | ||
1100 | module_init(moxa_init); | |
1101 | module_exit(moxa_exit); | |
1102 | ||
a8f5cda0 JS |
1103 | static void moxa_close_port(struct moxa_port *ch) |
1104 | { | |
1105 | moxa_shut_down(ch); | |
1106 | MoxaPortFlushData(ch, 2); | |
1107 | ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; | |
1108 | ch->tty->driver_data = NULL; | |
1109 | ch->tty = NULL; | |
1110 | } | |
1111 | ||
1112 | static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp, | |
1113 | struct moxa_port *ch) | |
1114 | { | |
1115 | DEFINE_WAIT(wait); | |
1116 | int retval = 0; | |
1117 | u8 dcd; | |
1118 | ||
1119 | while (1) { | |
1120 | prepare_to_wait(&ch->open_wait, &wait, TASK_INTERRUPTIBLE); | |
1121 | if (tty_hung_up_p(filp)) { | |
1122 | #ifdef SERIAL_DO_RESTART | |
1123 | retval = -ERESTARTSYS; | |
1124 | #else | |
1125 | retval = -EAGAIN; | |
1126 | #endif | |
1127 | break; | |
1128 | } | |
1129 | spin_lock_bh(&moxa_lock); | |
1130 | dcd = ch->DCDState; | |
1131 | spin_unlock_bh(&moxa_lock); | |
1132 | if (dcd) | |
1133 | break; | |
1134 | ||
1135 | if (signal_pending(current)) { | |
1136 | retval = -ERESTARTSYS; | |
1137 | break; | |
1138 | } | |
1139 | schedule(); | |
1140 | } | |
1141 | finish_wait(&ch->open_wait, &wait); | |
1142 | ||
1143 | return retval; | |
1144 | } | |
1145 | ||
1da177e4 LT |
1146 | static int moxa_open(struct tty_struct *tty, struct file *filp) |
1147 | { | |
810ab09b | 1148 | struct moxa_board_conf *brd; |
8f8ecbad | 1149 | struct moxa_port *ch; |
1da177e4 LT |
1150 | int port; |
1151 | int retval; | |
1da177e4 | 1152 | |
11324edd | 1153 | port = tty->index; |
1da177e4 | 1154 | if (port == MAX_PORTS) { |
74d7d97b | 1155 | return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; |
1da177e4 | 1156 | } |
a8f5cda0 JS |
1157 | if (mutex_lock_interruptible(&moxa_openlock)) |
1158 | return -ERESTARTSYS; | |
810ab09b | 1159 | brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; |
a8f5cda0 JS |
1160 | if (!brd->ready) { |
1161 | mutex_unlock(&moxa_openlock); | |
810ab09b | 1162 | return -ENODEV; |
a8f5cda0 | 1163 | } |
1da177e4 | 1164 | |
810ab09b | 1165 | ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; |
1da177e4 LT |
1166 | ch->count++; |
1167 | tty->driver_data = ch; | |
1168 | ch->tty = tty; | |
1169 | if (!(ch->asyncflags & ASYNC_INITIALIZED)) { | |
1170 | ch->statusflags = 0; | |
db1acaa6 | 1171 | moxa_set_tty_param(tty, tty->termios); |
b4173f45 JS |
1172 | MoxaPortLineCtrl(ch, 1, 1); |
1173 | MoxaPortEnable(ch); | |
a8f5cda0 | 1174 | MoxaSetFifo(ch, ch->type == PORT_16550A); |
1da177e4 LT |
1175 | ch->asyncflags |= ASYNC_INITIALIZED; |
1176 | } | |
a8f5cda0 | 1177 | mutex_unlock(&moxa_openlock); |
1da177e4 | 1178 | |
a8f5cda0 JS |
1179 | retval = 0; |
1180 | if (!(filp->f_flags & O_NONBLOCK) && !C_CLOCAL(tty)) | |
1181 | retval = moxa_block_till_ready(tty, filp, ch); | |
1182 | mutex_lock(&moxa_openlock); | |
1183 | if (retval) { | |
1184 | if (ch->count) /* 0 means already hung up... */ | |
1185 | if (--ch->count == 0) | |
1186 | moxa_close_port(ch); | |
1187 | } else | |
1188 | ch->asyncflags |= ASYNC_NORMAL_ACTIVE; | |
1189 | mutex_unlock(&moxa_openlock); | |
1da177e4 | 1190 | |
a8f5cda0 | 1191 | return retval; |
1da177e4 LT |
1192 | } |
1193 | ||
1194 | static void moxa_close(struct tty_struct *tty, struct file *filp) | |
1195 | { | |
8f8ecbad | 1196 | struct moxa_port *ch; |
1da177e4 LT |
1197 | int port; |
1198 | ||
11324edd | 1199 | port = tty->index; |
a8f5cda0 | 1200 | if (port == MAX_PORTS || tty_hung_up_p(filp)) |
1da177e4 | 1201 | return; |
1da177e4 | 1202 | |
a8f5cda0 JS |
1203 | mutex_lock(&moxa_openlock); |
1204 | ch = tty->driver_data; | |
1205 | if (ch == NULL) | |
1206 | goto unlock; | |
1207 | if (tty->count == 1 && ch->count != 1) { | |
7aeb95da JS |
1208 | printk(KERN_WARNING "moxa_close: bad serial port count; " |
1209 | "tty->count is 1, ch->count is %d\n", ch->count); | |
1da177e4 LT |
1210 | ch->count = 1; |
1211 | } | |
1212 | if (--ch->count < 0) { | |
7aeb95da JS |
1213 | printk(KERN_WARNING "moxa_close: bad serial port count, " |
1214 | "device=%s\n", tty->name); | |
1da177e4 LT |
1215 | ch->count = 0; |
1216 | } | |
a8f5cda0 JS |
1217 | if (ch->count) |
1218 | goto unlock; | |
1da177e4 LT |
1219 | |
1220 | ch->cflag = tty->termios->c_cflag; | |
1221 | if (ch->asyncflags & ASYNC_INITIALIZED) { | |
6f56b658 | 1222 | moxa_setup_empty_event(tty); |
1da177e4 | 1223 | tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */ |
1da177e4 | 1224 | } |
1da177e4 | 1225 | |
a8f5cda0 JS |
1226 | moxa_close_port(ch); |
1227 | unlock: | |
1228 | mutex_unlock(&moxa_openlock); | |
1da177e4 LT |
1229 | } |
1230 | ||
1231 | static int moxa_write(struct tty_struct *tty, | |
1232 | const unsigned char *buf, int count) | |
1233 | { | |
b4173f45 | 1234 | struct moxa_port *ch = tty->driver_data; |
b4173f45 | 1235 | int len; |
1da177e4 | 1236 | |
1da177e4 | 1237 | if (ch == NULL) |
b4173f45 | 1238 | return 0; |
33f0f88f | 1239 | |
7bcf97d1 | 1240 | spin_lock_bh(&moxa_lock); |
2108eba5 | 1241 | len = MoxaPortWriteData(ch, buf, count); |
7bcf97d1 | 1242 | spin_unlock_bh(&moxa_lock); |
1da177e4 | 1243 | |
1da177e4 | 1244 | ch->statusflags |= LOWWAIT; |
eaa95a8d | 1245 | return len; |
1da177e4 LT |
1246 | } |
1247 | ||
1248 | static int moxa_write_room(struct tty_struct *tty) | |
1249 | { | |
8f8ecbad | 1250 | struct moxa_port *ch; |
1da177e4 LT |
1251 | |
1252 | if (tty->stopped) | |
eaa95a8d | 1253 | return 0; |
b4173f45 | 1254 | ch = tty->driver_data; |
1da177e4 | 1255 | if (ch == NULL) |
eaa95a8d | 1256 | return 0; |
b4173f45 | 1257 | return MoxaPortTxFree(ch); |
1da177e4 LT |
1258 | } |
1259 | ||
1260 | static void moxa_flush_buffer(struct tty_struct *tty) | |
1261 | { | |
b4173f45 | 1262 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1263 | |
1264 | if (ch == NULL) | |
1265 | return; | |
b4173f45 | 1266 | MoxaPortFlushData(ch, 1); |
1da177e4 LT |
1267 | tty_wakeup(tty); |
1268 | } | |
1269 | ||
1270 | static int moxa_chars_in_buffer(struct tty_struct *tty) | |
1271 | { | |
b4173f45 | 1272 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1273 | int chars; |
1da177e4 LT |
1274 | |
1275 | /* | |
1276 | * Sigh...I have to check if driver_data is NULL here, because | |
1277 | * if an open() fails, the TTY subsystem eventually calls | |
1278 | * tty_wait_until_sent(), which calls the driver's chars_in_buffer() | |
1279 | * routine. And since the open() failed, we return 0 here. TDJ | |
1280 | */ | |
1281 | if (ch == NULL) | |
eaa95a8d | 1282 | return 0; |
978e595f | 1283 | lock_kernel(); |
b4173f45 | 1284 | chars = MoxaPortTxQueue(ch); |
1da177e4 LT |
1285 | if (chars) { |
1286 | /* | |
1287 | * Make it possible to wakeup anything waiting for output | |
1288 | * in tty_ioctl.c, etc. | |
1289 | */ | |
1290 | if (!(ch->statusflags & EMPTYWAIT)) | |
6f56b658 | 1291 | moxa_setup_empty_event(tty); |
1da177e4 | 1292 | } |
978e595f | 1293 | unlock_kernel(); |
eaa95a8d | 1294 | return chars; |
1da177e4 LT |
1295 | } |
1296 | ||
1da177e4 LT |
1297 | static int moxa_tiocmget(struct tty_struct *tty, struct file *file) |
1298 | { | |
a8f5cda0 | 1299 | struct moxa_port *ch; |
1da177e4 LT |
1300 | int flag = 0, dtr, rts; |
1301 | ||
a8f5cda0 JS |
1302 | mutex_lock(&moxa_openlock); |
1303 | ch = tty->driver_data; | |
1304 | if (!ch) { | |
1305 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1306 | return -EINVAL; |
a8f5cda0 | 1307 | } |
1da177e4 | 1308 | |
b4173f45 | 1309 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1310 | if (dtr) |
1311 | flag |= TIOCM_DTR; | |
1312 | if (rts) | |
1313 | flag |= TIOCM_RTS; | |
b4173f45 | 1314 | dtr = MoxaPortLineStatus(ch); |
1da177e4 LT |
1315 | if (dtr & 1) |
1316 | flag |= TIOCM_CTS; | |
1317 | if (dtr & 2) | |
1318 | flag |= TIOCM_DSR; | |
1319 | if (dtr & 4) | |
1320 | flag |= TIOCM_CD; | |
a8f5cda0 | 1321 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1322 | return flag; |
1323 | } | |
1324 | ||
1325 | static int moxa_tiocmset(struct tty_struct *tty, struct file *file, | |
1326 | unsigned int set, unsigned int clear) | |
1327 | { | |
a8f5cda0 | 1328 | struct moxa_port *ch; |
1da177e4 LT |
1329 | int port; |
1330 | int dtr, rts; | |
1331 | ||
11324edd | 1332 | port = tty->index; |
a8f5cda0 JS |
1333 | mutex_lock(&moxa_openlock); |
1334 | ch = tty->driver_data; | |
1335 | if (!ch) { | |
1336 | mutex_unlock(&moxa_openlock); | |
74d7d97b | 1337 | return -EINVAL; |
a8f5cda0 | 1338 | } |
1da177e4 | 1339 | |
b4173f45 | 1340 | MoxaPortGetLineOut(ch, &dtr, &rts); |
1da177e4 LT |
1341 | if (set & TIOCM_RTS) |
1342 | rts = 1; | |
1343 | if (set & TIOCM_DTR) | |
1344 | dtr = 1; | |
1345 | if (clear & TIOCM_RTS) | |
1346 | rts = 0; | |
1347 | if (clear & TIOCM_DTR) | |
1348 | dtr = 0; | |
b4173f45 | 1349 | MoxaPortLineCtrl(ch, dtr, rts); |
a8f5cda0 | 1350 | mutex_unlock(&moxa_openlock); |
1da177e4 LT |
1351 | return 0; |
1352 | } | |
1353 | ||
1da177e4 LT |
1354 | static void moxa_throttle(struct tty_struct *tty) |
1355 | { | |
eaa95a8d | 1356 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1357 | |
1358 | ch->statusflags |= THROTTLE; | |
1359 | } | |
1360 | ||
1361 | static void moxa_unthrottle(struct tty_struct *tty) | |
1362 | { | |
eaa95a8d | 1363 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1364 | |
1365 | ch->statusflags &= ~THROTTLE; | |
1366 | } | |
1367 | ||
1368 | static void moxa_set_termios(struct tty_struct *tty, | |
eaa95a8d | 1369 | struct ktermios *old_termios) |
1da177e4 | 1370 | { |
eaa95a8d | 1371 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1372 | |
1373 | if (ch == NULL) | |
1374 | return; | |
db1acaa6 | 1375 | moxa_set_tty_param(tty, old_termios); |
eaa95a8d | 1376 | if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) |
1da177e4 LT |
1377 | wake_up_interruptible(&ch->open_wait); |
1378 | } | |
1379 | ||
1380 | static void moxa_stop(struct tty_struct *tty) | |
1381 | { | |
eaa95a8d | 1382 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1383 | |
1384 | if (ch == NULL) | |
1385 | return; | |
b4173f45 | 1386 | MoxaPortTxDisable(ch); |
1da177e4 LT |
1387 | ch->statusflags |= TXSTOPPED; |
1388 | } | |
1389 | ||
1390 | ||
1391 | static void moxa_start(struct tty_struct *tty) | |
1392 | { | |
eaa95a8d | 1393 | struct moxa_port *ch = tty->driver_data; |
1da177e4 LT |
1394 | |
1395 | if (ch == NULL) | |
1396 | return; | |
1397 | ||
1398 | if (!(ch->statusflags & TXSTOPPED)) | |
1399 | return; | |
1400 | ||
b4173f45 | 1401 | MoxaPortTxEnable(ch); |
1da177e4 LT |
1402 | ch->statusflags &= ~TXSTOPPED; |
1403 | } | |
1404 | ||
1405 | static void moxa_hangup(struct tty_struct *tty) | |
1406 | { | |
a8f5cda0 | 1407 | struct moxa_port *ch; |
1da177e4 | 1408 | |
a8f5cda0 JS |
1409 | mutex_lock(&moxa_openlock); |
1410 | ch = tty->driver_data; | |
1411 | if (ch == NULL) { | |
1412 | mutex_unlock(&moxa_openlock); | |
1413 | return; | |
1414 | } | |
1da177e4 | 1415 | ch->count = 0; |
a8f5cda0 JS |
1416 | moxa_close_port(ch); |
1417 | mutex_unlock(&moxa_openlock); | |
1418 | ||
1da177e4 LT |
1419 | wake_up_interruptible(&ch->open_wait); |
1420 | } | |
1421 | ||
7bcf97d1 | 1422 | static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) |
1da177e4 | 1423 | { |
7bcf97d1 | 1424 | dcd = !!dcd; |
1da177e4 | 1425 | |
eaa95a8d | 1426 | if (dcd != p->DCDState && p->tty && C_CLOCAL(p->tty)) { |
a8f5cda0 | 1427 | if (!dcd) |
7bcf97d1 | 1428 | tty_hangup(p->tty); |
7bcf97d1 JS |
1429 | } |
1430 | p->DCDState = dcd; | |
1431 | } | |
1da177e4 | 1432 | |
7bcf97d1 JS |
1433 | static int moxa_poll_port(struct moxa_port *p, unsigned int handle, |
1434 | u16 __iomem *ip) | |
1435 | { | |
1436 | struct tty_struct *tty = p->tty; | |
1437 | void __iomem *ofsAddr; | |
1438 | unsigned int inited = p->asyncflags & ASYNC_INITIALIZED; | |
1439 | u16 intr; | |
1440 | ||
1441 | if (tty) { | |
1442 | if ((p->statusflags & EMPTYWAIT) && | |
1443 | MoxaPortTxQueue(p) == 0) { | |
1444 | p->statusflags &= ~EMPTYWAIT; | |
1445 | tty_wakeup(tty); | |
1446 | } | |
1447 | if ((p->statusflags & LOWWAIT) && !tty->stopped && | |
1448 | MoxaPortTxQueue(p) <= WAKEUP_CHARS) { | |
1449 | p->statusflags &= ~LOWWAIT; | |
1450 | tty_wakeup(tty); | |
1451 | } | |
1452 | ||
1453 | if (inited && !(p->statusflags & THROTTLE) && | |
1454 | MoxaPortRxQueue(p) > 0) { /* RX */ | |
1455 | MoxaPortReadData(p); | |
1456 | tty_schedule_flip(tty); | |
1457 | } | |
1458 | } else { | |
1459 | p->statusflags &= ~EMPTYWAIT; | |
1460 | MoxaPortFlushData(p, 0); /* flush RX */ | |
1da177e4 | 1461 | } |
0bcc4caa | 1462 | |
7bcf97d1 JS |
1463 | if (!handle) /* nothing else to do */ |
1464 | return 0; | |
1465 | ||
1466 | intr = readw(ip); /* port irq status */ | |
1467 | if (intr == 0) | |
1468 | return 0; | |
1469 | ||
1470 | writew(0, ip); /* ACK port */ | |
1471 | ofsAddr = p->tableAddr; | |
1472 | if (intr & IntrTx) /* disable tx intr */ | |
1473 | writew(readw(ofsAddr + HostStat) & ~WakeupTx, | |
1474 | ofsAddr + HostStat); | |
1475 | ||
1476 | if (!inited) | |
1477 | return 0; | |
1478 | ||
1479 | if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ | |
1480 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1481 | tty_schedule_flip(tty); | |
1482 | } | |
1483 | ||
1484 | if (intr & IntrLine) | |
1485 | moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); | |
1486 | ||
1487 | return 0; | |
1488 | } | |
1489 | ||
1490 | static void moxa_poll(unsigned long ignored) | |
1491 | { | |
1492 | struct moxa_board_conf *brd; | |
1493 | u16 __iomem *ip; | |
2a541341 | 1494 | unsigned int card, port, served = 0; |
7bcf97d1 JS |
1495 | |
1496 | spin_lock(&moxa_lock); | |
1da177e4 | 1497 | for (card = 0; card < MAX_BOARDS; card++) { |
7bcf97d1 JS |
1498 | brd = &moxa_boards[card]; |
1499 | if (!brd->ready) | |
1da177e4 | 1500 | continue; |
7bcf97d1 | 1501 | |
2a541341 JS |
1502 | served++; |
1503 | ||
7bcf97d1 JS |
1504 | ip = NULL; |
1505 | if (readb(brd->intPend) == 0xff) | |
1506 | ip = brd->intTable + readb(brd->intNdx); | |
1507 | ||
1508 | for (port = 0; port < brd->numPorts; port++) | |
1509 | moxa_poll_port(&brd->ports[port], !!ip, ip + port); | |
1510 | ||
1511 | if (ip) | |
1512 | writeb(0, brd->intPend); /* ACK */ | |
1513 | ||
1514 | if (moxaLowWaterChk) { | |
1515 | struct moxa_port *p = brd->ports; | |
1516 | for (port = 0; port < brd->numPorts; port++, p++) | |
1517 | if (p->lowChkFlag) { | |
1518 | p->lowChkFlag = 0; | |
1519 | moxa_low_water_check(p->tableAddr); | |
1da177e4 | 1520 | } |
1da177e4 LT |
1521 | } |
1522 | } | |
7bcf97d1 | 1523 | moxaLowWaterChk = 0; |
1da177e4 | 1524 | |
2a541341 JS |
1525 | if (served) |
1526 | mod_timer(&moxaTimer, jiffies + HZ / 50); | |
1527 | spin_unlock(&moxa_lock); | |
1da177e4 LT |
1528 | } |
1529 | ||
1530 | /******************************************************************************/ | |
1531 | ||
db1acaa6 | 1532 | static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 1533 | { |
eaa95a8d JS |
1534 | register struct ktermios *ts = tty->termios; |
1535 | struct moxa_port *ch = tty->driver_data; | |
db1acaa6 | 1536 | int rts, cts, txflow, rxflow, xany, baud; |
1da177e4 | 1537 | |
1da177e4 LT |
1538 | rts = cts = txflow = rxflow = xany = 0; |
1539 | if (ts->c_cflag & CRTSCTS) | |
1540 | rts = cts = 1; | |
1541 | if (ts->c_iflag & IXON) | |
1542 | txflow = 1; | |
1543 | if (ts->c_iflag & IXOFF) | |
1544 | rxflow = 1; | |
1545 | if (ts->c_iflag & IXANY) | |
1546 | xany = 1; | |
db1acaa6 AC |
1547 | |
1548 | /* Clear the features we don't support */ | |
1549 | ts->c_cflag &= ~CMSPAR; | |
b4173f45 JS |
1550 | MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); |
1551 | baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); | |
db1acaa6 AC |
1552 | if (baud == -1) |
1553 | baud = tty_termios_baud_rate(old_termios); | |
1554 | /* Not put the baud rate into the termios data */ | |
1555 | tty_encode_baud_rate(tty, baud, baud); | |
1da177e4 LT |
1556 | } |
1557 | ||
6f56b658 | 1558 | static void moxa_setup_empty_event(struct tty_struct *tty) |
1da177e4 | 1559 | { |
8f8ecbad | 1560 | struct moxa_port *ch = tty->driver_data; |
1da177e4 | 1561 | |
7bcf97d1 | 1562 | spin_lock_bh(&moxa_lock); |
1da177e4 | 1563 | ch->statusflags |= EMPTYWAIT; |
7bcf97d1 | 1564 | spin_unlock_bh(&moxa_lock); |
1da177e4 LT |
1565 | } |
1566 | ||
6f56b658 | 1567 | static void moxa_shut_down(struct moxa_port *ch) |
1da177e4 | 1568 | { |
a8f5cda0 | 1569 | struct tty_struct *tp = ch->tty; |
1da177e4 LT |
1570 | |
1571 | if (!(ch->asyncflags & ASYNC_INITIALIZED)) | |
1572 | return; | |
1573 | ||
b4173f45 | 1574 | MoxaPortDisable(ch); |
1da177e4 LT |
1575 | |
1576 | /* | |
1577 | * If we're a modem control device and HUPCL is on, drop RTS & DTR. | |
1578 | */ | |
a8f5cda0 | 1579 | if (C_HUPCL(tp)) |
b4173f45 | 1580 | MoxaPortLineCtrl(ch, 0, 0); |
1da177e4 | 1581 | |
a8f5cda0 | 1582 | spin_lock_bh(&moxa_lock); |
1da177e4 | 1583 | ch->asyncflags &= ~ASYNC_INITIALIZED; |
a8f5cda0 | 1584 | spin_unlock_bh(&moxa_lock); |
1da177e4 LT |
1585 | } |
1586 | ||
1da177e4 LT |
1587 | /***************************************************************************** |
1588 | * Driver level functions: * | |
1da177e4 | 1589 | *****************************************************************************/ |
1da177e4 | 1590 | |
b4173f45 | 1591 | static void MoxaPortFlushData(struct moxa_port *port, int mode) |
1da177e4 LT |
1592 | { |
1593 | void __iomem *ofsAddr; | |
eaa95a8d | 1594 | if (mode < 0 || mode > 2) |
1da177e4 | 1595 | return; |
b4173f45 | 1596 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1597 | moxafunc(ofsAddr, FC_FlushQueue, mode); |
1598 | if (mode != 1) { | |
b4173f45 | 1599 | port->lowChkFlag = 0; |
6f56b658 | 1600 | moxa_low_water_check(ofsAddr); |
1da177e4 LT |
1601 | } |
1602 | } | |
1603 | ||
1da177e4 LT |
1604 | /* |
1605 | * Moxa Port Number Description: | |
1606 | * | |
1607 | * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, | |
1608 | * the port number using in MOXA driver functions will be 0 to 31 for | |
1609 | * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 | |
1610 | * to 127 for fourth. For example, if you setup three MOXA boards, | |
1611 | * first board is C218, second board is C320-16 and third board is | |
1612 | * C320-32. The port number of first board (C218 - 8 ports) is from | |
1613 | * 0 to 7. The port number of second board (C320 - 16 ports) is form | |
1614 | * 32 to 47. The port number of third board (C320 - 32 ports) is from | |
1615 | * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to | |
1616 | * 127 will be invalid. | |
1617 | * | |
1618 | * | |
1619 | * Moxa Functions Description: | |
1620 | * | |
1621 | * Function 1: Driver initialization routine, this routine must be | |
1622 | * called when initialized driver. | |
1623 | * Syntax: | |
1624 | * void MoxaDriverInit(); | |
1625 | * | |
1626 | * | |
1627 | * Function 2: Moxa driver private IOCTL command processing. | |
1628 | * Syntax: | |
1629 | * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); | |
1630 | * | |
1631 | * unsigned int cmd : IOCTL command | |
1632 | * unsigned long arg : IOCTL argument | |
1633 | * int port : port number (0 - 127) | |
1634 | * | |
1635 | * return: 0 (OK) | |
1636 | * -EINVAL | |
1637 | * -ENOIOCTLCMD | |
1638 | * | |
1639 | * | |
1da177e4 LT |
1640 | * Function 6: Enable this port to start Tx/Rx data. |
1641 | * Syntax: | |
1642 | * void MoxaPortEnable(int port); | |
1643 | * int port : port number (0 - 127) | |
1644 | * | |
1645 | * | |
1646 | * Function 7: Disable this port | |
1647 | * Syntax: | |
1648 | * void MoxaPortDisable(int port); | |
1649 | * int port : port number (0 - 127) | |
1650 | * | |
1651 | * | |
1da177e4 LT |
1652 | * Function 10: Setting baud rate of this port. |
1653 | * Syntax: | |
08d01c79 | 1654 | * speed_t MoxaPortSetBaud(int port, speed_t baud); |
1da177e4 LT |
1655 | * int port : port number (0 - 127) |
1656 | * long baud : baud rate (50 - 115200) | |
1657 | * | |
1658 | * return: 0 : this port is invalid or baud < 50 | |
1659 | * 50 - 115200 : the real baud rate set to the port, if | |
1660 | * the argument baud is large than maximun | |
1661 | * available baud rate, the real setting | |
1662 | * baud rate will be the maximun baud rate. | |
1663 | * | |
1664 | * | |
1da177e4 LT |
1665 | * Function 12: Configure the port. |
1666 | * Syntax: | |
606d099c | 1667 | * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); |
1da177e4 | 1668 | * int port : port number (0 - 127) |
606d099c | 1669 | * struct ktermios * termio : termio structure pointer |
c7bce309 | 1670 | * speed_t baud : baud rate |
1da177e4 LT |
1671 | * |
1672 | * return: -1 : this port is invalid or termio == NULL | |
1673 | * 0 : setting O.K. | |
1674 | * | |
1675 | * | |
1676 | * Function 13: Get the DTR/RTS state of this port. | |
1677 | * Syntax: | |
1678 | * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); | |
1679 | * int port : port number (0 - 127) | |
1680 | * int * dtrState : pointer to INT to receive the current DTR | |
1681 | * state. (if NULL, this function will not | |
1682 | * write to this address) | |
1683 | * int * rtsState : pointer to INT to receive the current RTS | |
1684 | * state. (if NULL, this function will not | |
1685 | * write to this address) | |
1686 | * | |
1687 | * return: -1 : this port is invalid | |
1688 | * 0 : O.K. | |
1689 | * | |
1690 | * | |
1691 | * Function 14: Setting the DTR/RTS output state of this port. | |
1692 | * Syntax: | |
1693 | * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); | |
1694 | * int port : port number (0 - 127) | |
1695 | * int dtrState : DTR output state (0: off, 1: on) | |
1696 | * int rtsState : RTS output state (0: off, 1: on) | |
1697 | * | |
1698 | * | |
1699 | * Function 15: Setting the flow control of this port. | |
1700 | * Syntax: | |
1701 | * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, | |
1702 | * int txFlow,int xany); | |
1703 | * int port : port number (0 - 127) | |
1704 | * int rtsFlow : H/W RTS flow control (0: no, 1: yes) | |
1705 | * int ctsFlow : H/W CTS flow control (0: no, 1: yes) | |
1706 | * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) | |
1707 | * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) | |
1708 | * int xany : S/W XANY flow control (0: no, 1: yes) | |
1709 | * | |
1710 | * | |
1711 | * Function 16: Get ths line status of this port | |
1712 | * Syntax: | |
1713 | * int MoxaPortLineStatus(int port); | |
1714 | * int port : port number (0 - 127) | |
1715 | * | |
1716 | * return: Bit 0 - CTS state (0: off, 1: on) | |
1717 | * Bit 1 - DSR state (0: off, 1: on) | |
1718 | * Bit 2 - DCD state (0: off, 1: on) | |
1719 | * | |
1720 | * | |
1da177e4 LT |
1721 | * Function 19: Flush the Rx/Tx buffer data of this port. |
1722 | * Syntax: | |
1723 | * void MoxaPortFlushData(int port, int mode); | |
1724 | * int port : port number (0 - 127) | |
1725 | * int mode | |
1726 | * 0 : flush the Rx buffer | |
1727 | * 1 : flush the Tx buffer | |
1728 | * 2 : flush the Rx and Tx buffer | |
1729 | * | |
1730 | * | |
1731 | * Function 20: Write data. | |
1732 | * Syntax: | |
1733 | * int MoxaPortWriteData(int port, unsigned char * buffer, int length); | |
1734 | * int port : port number (0 - 127) | |
1735 | * unsigned char * buffer : pointer to write data buffer. | |
1736 | * int length : write data length | |
1737 | * | |
1738 | * return: 0 - length : real write data length | |
1739 | * | |
1740 | * | |
1741 | * Function 21: Read data. | |
1742 | * Syntax: | |
33f0f88f | 1743 | * int MoxaPortReadData(int port, struct tty_struct *tty); |
1da177e4 | 1744 | * int port : port number (0 - 127) |
33f0f88f | 1745 | * struct tty_struct *tty : tty for data |
1da177e4 LT |
1746 | * |
1747 | * return: 0 - length : real read data length | |
1748 | * | |
1749 | * | |
1da177e4 LT |
1750 | * Function 24: Get the Tx buffer current queued data bytes |
1751 | * Syntax: | |
1752 | * int MoxaPortTxQueue(int port); | |
1753 | * int port : port number (0 - 127) | |
1754 | * | |
1755 | * return: .. : Tx buffer current queued data bytes | |
1756 | * | |
1757 | * | |
1758 | * Function 25: Get the Tx buffer current free space | |
1759 | * Syntax: | |
1760 | * int MoxaPortTxFree(int port); | |
1761 | * int port : port number (0 - 127) | |
1762 | * | |
1763 | * return: .. : Tx buffer current free space | |
1764 | * | |
1765 | * | |
1766 | * Function 26: Get the Rx buffer current queued data bytes | |
1767 | * Syntax: | |
1768 | * int MoxaPortRxQueue(int port); | |
1769 | * int port : port number (0 - 127) | |
1770 | * | |
1771 | * return: .. : Rx buffer current queued data bytes | |
1772 | * | |
1773 | * | |
1da177e4 LT |
1774 | * Function 28: Disable port data transmission. |
1775 | * Syntax: | |
1776 | * void MoxaPortTxDisable(int port); | |
1777 | * int port : port number (0 - 127) | |
1778 | * | |
1779 | * | |
1780 | * Function 29: Enable port data transmission. | |
1781 | * Syntax: | |
1782 | * void MoxaPortTxEnable(int port); | |
1783 | * int port : port number (0 - 127) | |
1784 | * | |
1785 | * | |
1da177e4 LT |
1786 | * Function 31: Get the received BREAK signal count and reset it. |
1787 | * Syntax: | |
1788 | * int MoxaPortResetBrkCnt(int port); | |
1789 | * int port : port number (0 - 127) | |
1790 | * | |
1791 | * return: 0 - .. : BREAK signal count | |
1792 | * | |
1793 | * | |
1da177e4 | 1794 | */ |
1da177e4 | 1795 | |
b4173f45 | 1796 | static void MoxaPortEnable(struct moxa_port *port) |
1da177e4 LT |
1797 | { |
1798 | void __iomem *ofsAddr; | |
eaa95a8d | 1799 | u16 lowwater = 512; |
1da177e4 | 1800 | |
b4173f45 | 1801 | ofsAddr = port->tableAddr; |
1da177e4 | 1802 | writew(lowwater, ofsAddr + Low_water); |
08d01c79 | 1803 | if (MOXA_IS_320(port->board)) |
1da177e4 | 1804 | moxafunc(ofsAddr, FC_SetBreakIrq, 0); |
eaa95a8d JS |
1805 | else |
1806 | writew(readw(ofsAddr + HostStat) | WakeupBreak, | |
1807 | ofsAddr + HostStat); | |
1da177e4 LT |
1808 | |
1809 | moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); | |
1810 | moxafunc(ofsAddr, FC_FlushQueue, 2); | |
1811 | ||
1812 | moxafunc(ofsAddr, FC_EnableCH, Magic_code); | |
1813 | MoxaPortLineStatus(port); | |
1814 | } | |
1815 | ||
b4173f45 | 1816 | static void MoxaPortDisable(struct moxa_port *port) |
1da177e4 | 1817 | { |
b4173f45 | 1818 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
1819 | |
1820 | moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ | |
1821 | moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); | |
1822 | writew(0, ofsAddr + HostStat); | |
1823 | moxafunc(ofsAddr, FC_DisableCH, Magic_code); | |
1824 | } | |
1825 | ||
08d01c79 | 1826 | static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) |
1da177e4 | 1827 | { |
08d01c79 JS |
1828 | void __iomem *ofsAddr = port->tableAddr; |
1829 | unsigned int clock, val; | |
1830 | speed_t max; | |
1da177e4 | 1831 | |
08d01c79 JS |
1832 | max = MOXA_IS_320(port->board) ? 460800 : 921600; |
1833 | if (baud < 50) | |
eaa95a8d | 1834 | return 0; |
1da177e4 LT |
1835 | if (baud > max) |
1836 | baud = max; | |
08d01c79 | 1837 | clock = 921600; |
1da177e4 LT |
1838 | val = clock / baud; |
1839 | moxafunc(ofsAddr, FC_SetBaud, val); | |
1840 | baud = clock / val; | |
eaa95a8d | 1841 | return baud; |
1da177e4 LT |
1842 | } |
1843 | ||
b4173f45 JS |
1844 | static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, |
1845 | speed_t baud) | |
1da177e4 LT |
1846 | { |
1847 | void __iomem *ofsAddr; | |
1848 | tcflag_t cflag; | |
1da177e4 LT |
1849 | tcflag_t mode = 0; |
1850 | ||
b4173f45 | 1851 | ofsAddr = port->tableAddr; |
1da177e4 LT |
1852 | cflag = termio->c_cflag; /* termio->c_cflag */ |
1853 | ||
1854 | mode = termio->c_cflag & CSIZE; | |
1855 | if (mode == CS5) | |
1856 | mode = MX_CS5; | |
1857 | else if (mode == CS6) | |
1858 | mode = MX_CS6; | |
1859 | else if (mode == CS7) | |
1860 | mode = MX_CS7; | |
1861 | else if (mode == CS8) | |
1862 | mode = MX_CS8; | |
1863 | ||
1864 | if (termio->c_cflag & CSTOPB) { | |
1865 | if (mode == MX_CS5) | |
1866 | mode |= MX_STOP15; | |
1867 | else | |
1868 | mode |= MX_STOP2; | |
1869 | } else | |
1870 | mode |= MX_STOP1; | |
1871 | ||
1872 | if (termio->c_cflag & PARENB) { | |
1873 | if (termio->c_cflag & PARODD) | |
1874 | mode |= MX_PARODD; | |
1875 | else | |
1876 | mode |= MX_PAREVEN; | |
1877 | } else | |
1878 | mode |= MX_PARNONE; | |
1879 | ||
eaa95a8d | 1880 | moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); |
1da177e4 | 1881 | |
08d01c79 JS |
1882 | if (MOXA_IS_320(port->board) && baud >= 921600) |
1883 | return -1; | |
1884 | ||
db1acaa6 | 1885 | baud = MoxaPortSetBaud(port, baud); |
1da177e4 LT |
1886 | |
1887 | if (termio->c_iflag & (IXON | IXOFF | IXANY)) { | |
1888 | writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); | |
1889 | writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); | |
1890 | writeb(FC_SetXonXoff, ofsAddr + FuncCode); | |
6f56b658 | 1891 | moxa_wait_finish(ofsAddr); |
1da177e4 LT |
1892 | |
1893 | } | |
eaa95a8d | 1894 | return baud; |
1da177e4 LT |
1895 | } |
1896 | ||
b4173f45 JS |
1897 | static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, |
1898 | int *rtsState) | |
1da177e4 | 1899 | { |
b4173f45 JS |
1900 | if (dtrState) |
1901 | *dtrState = !!(port->lineCtrl & DTR_ON); | |
1902 | if (rtsState) | |
1903 | *rtsState = !!(port->lineCtrl & RTS_ON); | |
1904 | ||
eaa95a8d | 1905 | return 0; |
1da177e4 LT |
1906 | } |
1907 | ||
b4173f45 | 1908 | static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) |
1da177e4 | 1909 | { |
eaa95a8d | 1910 | u8 mode = 0; |
1da177e4 | 1911 | |
1da177e4 LT |
1912 | if (dtr) |
1913 | mode |= DTR_ON; | |
1914 | if (rts) | |
1915 | mode |= RTS_ON; | |
b4173f45 JS |
1916 | port->lineCtrl = mode; |
1917 | moxafunc(port->tableAddr, FC_LineControl, mode); | |
1da177e4 LT |
1918 | } |
1919 | ||
b4173f45 JS |
1920 | static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, |
1921 | int txflow, int rxflow, int txany) | |
1da177e4 | 1922 | { |
b4173f45 | 1923 | int mode = 0; |
1da177e4 | 1924 | |
1da177e4 LT |
1925 | if (rts) |
1926 | mode |= RTS_FlowCtl; | |
1927 | if (cts) | |
1928 | mode |= CTS_FlowCtl; | |
1929 | if (txflow) | |
1930 | mode |= Tx_FlowCtl; | |
1931 | if (rxflow) | |
1932 | mode |= Rx_FlowCtl; | |
1933 | if (txany) | |
1934 | mode |= IXM_IXANY; | |
b4173f45 | 1935 | moxafunc(port->tableAddr, FC_SetFlowCtl, mode); |
1da177e4 LT |
1936 | } |
1937 | ||
b4173f45 | 1938 | static int MoxaPortLineStatus(struct moxa_port *port) |
1da177e4 LT |
1939 | { |
1940 | void __iomem *ofsAddr; | |
1941 | int val; | |
1942 | ||
b4173f45 | 1943 | ofsAddr = port->tableAddr; |
08d01c79 | 1944 | if (MOXA_IS_320(port->board)) { |
1da177e4 LT |
1945 | moxafunc(ofsAddr, FC_LineStatus, 0); |
1946 | val = readw(ofsAddr + FuncArg); | |
1947 | } else { | |
1948 | val = readw(ofsAddr + FlagStat) >> 4; | |
1949 | } | |
1950 | val &= 0x0B; | |
7bcf97d1 | 1951 | if (val & 8) |
1da177e4 | 1952 | val |= 4; |
a8f5cda0 | 1953 | spin_lock_bh(&moxa_lock); |
7bcf97d1 | 1954 | moxa_new_dcdstate(port, val & 8); |
a8f5cda0 | 1955 | spin_unlock_bh(&moxa_lock); |
1da177e4 | 1956 | val &= 7; |
7bcf97d1 | 1957 | return val; |
1da177e4 LT |
1958 | } |
1959 | ||
2108eba5 JS |
1960 | static int MoxaPortWriteData(struct moxa_port *port, |
1961 | const unsigned char *buffer, int len) | |
1da177e4 | 1962 | { |
1da177e4 | 1963 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
1964 | unsigned int c, total; |
1965 | u16 head, tail, tx_mask, spage, epage; | |
1966 | u16 pageno, pageofs, bufhead; | |
1da177e4 | 1967 | |
b4173f45 JS |
1968 | ofsAddr = port->tableAddr; |
1969 | baseAddr = port->board->basemem; | |
1da177e4 LT |
1970 | tx_mask = readw(ofsAddr + TX_mask); |
1971 | spage = readw(ofsAddr + Page_txb); | |
1972 | epage = readw(ofsAddr + EndPage_txb); | |
1973 | tail = readw(ofsAddr + TXwptr); | |
1974 | head = readw(ofsAddr + TXrptr); | |
2108eba5 | 1975 | c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); |
1da177e4 LT |
1976 | if (c > len) |
1977 | c = len; | |
b4173f45 | 1978 | moxaLog.txcnt[port->tty->index] += c; |
1da177e4 LT |
1979 | total = c; |
1980 | if (spage == epage) { | |
1981 | bufhead = readw(ofsAddr + Ofs_txb); | |
1982 | writew(spage, baseAddr + Control_reg); | |
1983 | while (c > 0) { | |
1984 | if (head > tail) | |
1985 | len = head - tail - 1; | |
1986 | else | |
1987 | len = tx_mask + 1 - tail; | |
1988 | len = (c > len) ? len : c; | |
1989 | ofs = baseAddr + DynPage_addr + bufhead + tail; | |
2108eba5 JS |
1990 | memcpy_toio(ofs, buffer, len); |
1991 | buffer += len; | |
1da177e4 LT |
1992 | tail = (tail + len) & tx_mask; |
1993 | c -= len; | |
1994 | } | |
1da177e4 | 1995 | } else { |
1da177e4 LT |
1996 | pageno = spage + (tail >> 13); |
1997 | pageofs = tail & Page_mask; | |
2108eba5 JS |
1998 | while (c > 0) { |
1999 | len = Page_size - pageofs; | |
2000 | if (len > c) | |
2001 | len = c; | |
1da177e4 LT |
2002 | writeb(pageno, baseAddr + Control_reg); |
2003 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
2004 | memcpy_toio(ofs, buffer, len); |
2005 | buffer += len; | |
1da177e4 LT |
2006 | if (++pageno == epage) |
2007 | pageno = spage; | |
2008 | pageofs = 0; | |
2108eba5 JS |
2009 | c -= len; |
2010 | } | |
2011 | tail = (tail + total) & tx_mask; | |
1da177e4 | 2012 | } |
2108eba5 | 2013 | writew(tail, ofsAddr + TXwptr); |
1da177e4 | 2014 | writeb(1, ofsAddr + CD180TXirq); /* start to send */ |
2108eba5 | 2015 | return total; |
1da177e4 LT |
2016 | } |
2017 | ||
7bcf97d1 | 2018 | static int MoxaPortReadData(struct moxa_port *port) |
1da177e4 | 2019 | { |
7bcf97d1 | 2020 | struct tty_struct *tty = port->tty; |
2108eba5 | 2021 | unsigned char *dst; |
1da177e4 | 2022 | void __iomem *baseAddr, *ofsAddr, *ofs; |
2108eba5 JS |
2023 | unsigned int count, len, total; |
2024 | u16 tail, rx_mask, spage, epage; | |
2025 | u16 pageno, pageofs, bufhead, head; | |
1da177e4 | 2026 | |
b4173f45 JS |
2027 | ofsAddr = port->tableAddr; |
2028 | baseAddr = port->board->basemem; | |
1da177e4 LT |
2029 | head = readw(ofsAddr + RXrptr); |
2030 | tail = readw(ofsAddr + RXwptr); | |
2031 | rx_mask = readw(ofsAddr + RX_mask); | |
2032 | spage = readw(ofsAddr + Page_rxb); | |
2033 | epage = readw(ofsAddr + EndPage_rxb); | |
2108eba5 | 2034 | count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); |
1da177e4 | 2035 | if (count == 0) |
33f0f88f | 2036 | return 0; |
1da177e4 | 2037 | |
33f0f88f | 2038 | total = count; |
7bcf97d1 | 2039 | moxaLog.rxcnt[tty->index] += total; |
1da177e4 LT |
2040 | if (spage == epage) { |
2041 | bufhead = readw(ofsAddr + Ofs_rxb); | |
2042 | writew(spage, baseAddr + Control_reg); | |
2043 | while (count > 0) { | |
1da177e4 | 2044 | ofs = baseAddr + DynPage_addr + bufhead + head; |
2108eba5 JS |
2045 | len = (tail >= head) ? (tail - head) : |
2046 | (rx_mask + 1 - head); | |
2047 | len = tty_prepare_flip_string(tty, &dst, | |
2048 | min(len, count)); | |
2049 | memcpy_fromio(dst, ofs, len); | |
1da177e4 LT |
2050 | head = (head + len) & rx_mask; |
2051 | count -= len; | |
2052 | } | |
1da177e4 | 2053 | } else { |
1da177e4 LT |
2054 | pageno = spage + (head >> 13); |
2055 | pageofs = head & Page_mask; | |
2108eba5 | 2056 | while (count > 0) { |
1da177e4 LT |
2057 | writew(pageno, baseAddr + Control_reg); |
2058 | ofs = baseAddr + DynPage_addr + pageofs; | |
2108eba5 JS |
2059 | len = tty_prepare_flip_string(tty, &dst, |
2060 | min(Page_size - pageofs, count)); | |
2061 | memcpy_fromio(dst, ofs, len); | |
2062 | ||
2063 | count -= len; | |
2064 | pageofs = (pageofs + len) & Page_mask; | |
2065 | if (pageofs == 0 && ++pageno == epage) | |
1da177e4 | 2066 | pageno = spage; |
2108eba5 JS |
2067 | } |
2068 | head = (head + total) & rx_mask; | |
1da177e4 | 2069 | } |
2108eba5 JS |
2070 | writew(head, ofsAddr + RXrptr); |
2071 | if (readb(ofsAddr + FlagStat) & Xoff_state) { | |
1da177e4 | 2072 | moxaLowWaterChk = 1; |
b4173f45 | 2073 | port->lowChkFlag = 1; |
1da177e4 | 2074 | } |
2108eba5 | 2075 | return total; |
1da177e4 LT |
2076 | } |
2077 | ||
2078 | ||
b4173f45 | 2079 | static int MoxaPortTxQueue(struct moxa_port *port) |
1da177e4 | 2080 | { |
b4173f45 | 2081 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2082 | u16 rptr, wptr, mask; |
1da177e4 | 2083 | |
1da177e4 LT |
2084 | rptr = readw(ofsAddr + TXrptr); |
2085 | wptr = readw(ofsAddr + TXwptr); | |
2086 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2087 | return (wptr - rptr) & mask; |
1da177e4 LT |
2088 | } |
2089 | ||
b4173f45 | 2090 | static int MoxaPortTxFree(struct moxa_port *port) |
1da177e4 | 2091 | { |
b4173f45 | 2092 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2093 | u16 rptr, wptr, mask; |
1da177e4 | 2094 | |
1da177e4 LT |
2095 | rptr = readw(ofsAddr + TXrptr); |
2096 | wptr = readw(ofsAddr + TXwptr); | |
2097 | mask = readw(ofsAddr + TX_mask); | |
2108eba5 | 2098 | return mask - ((wptr - rptr) & mask); |
1da177e4 LT |
2099 | } |
2100 | ||
b4173f45 | 2101 | static int MoxaPortRxQueue(struct moxa_port *port) |
1da177e4 | 2102 | { |
b4173f45 | 2103 | void __iomem *ofsAddr = port->tableAddr; |
2108eba5 | 2104 | u16 rptr, wptr, mask; |
1da177e4 | 2105 | |
1da177e4 LT |
2106 | rptr = readw(ofsAddr + RXrptr); |
2107 | wptr = readw(ofsAddr + RXwptr); | |
2108 | mask = readw(ofsAddr + RX_mask); | |
2108eba5 | 2109 | return (wptr - rptr) & mask; |
1da177e4 LT |
2110 | } |
2111 | ||
b4173f45 | 2112 | static void MoxaPortTxDisable(struct moxa_port *port) |
1da177e4 | 2113 | { |
b4173f45 | 2114 | moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); |
1da177e4 LT |
2115 | } |
2116 | ||
b4173f45 | 2117 | static void MoxaPortTxEnable(struct moxa_port *port) |
1da177e4 | 2118 | { |
b4173f45 | 2119 | moxafunc(port->tableAddr, FC_SetXonState, Magic_code); |
1da177e4 LT |
2120 | } |
2121 | ||
8f8ecbad | 2122 | static int moxa_get_serial_info(struct moxa_port *info, |
eaa95a8d | 2123 | struct serial_struct __user *retinfo) |
1da177e4 | 2124 | { |
eaa95a8d JS |
2125 | struct serial_struct tmp = { |
2126 | .type = info->type, | |
2127 | .line = info->tty->index, | |
2128 | .flags = info->asyncflags, | |
2129 | .baud_base = 921600, | |
2130 | .close_delay = info->close_delay | |
2131 | }; | |
2132 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; | |
1da177e4 LT |
2133 | } |
2134 | ||
2135 | ||
8f8ecbad | 2136 | static int moxa_set_serial_info(struct moxa_port *info, |
eaa95a8d | 2137 | struct serial_struct __user *new_info) |
1da177e4 LT |
2138 | { |
2139 | struct serial_struct new_serial; | |
2140 | ||
eaa95a8d | 2141 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
1da177e4 LT |
2142 | return -EFAULT; |
2143 | ||
eaa95a8d JS |
2144 | if (new_serial.irq != 0 || new_serial.port != 0 || |
2145 | new_serial.custom_divisor != 0 || | |
2146 | new_serial.baud_base != 921600) | |
2147 | return -EPERM; | |
1da177e4 LT |
2148 | |
2149 | if (!capable(CAP_SYS_ADMIN)) { | |
2150 | if (((new_serial.flags & ~ASYNC_USR_MASK) != | |
2151 | (info->asyncflags & ~ASYNC_USR_MASK))) | |
eaa95a8d JS |
2152 | return -EPERM; |
2153 | } else | |
1da177e4 | 2154 | info->close_delay = new_serial.close_delay * HZ / 100; |
1da177e4 LT |
2155 | |
2156 | new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); | |
2157 | new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); | |
2158 | ||
eaa95a8d | 2159 | MoxaSetFifo(info, new_serial.type == PORT_16550A); |
1da177e4 LT |
2160 | |
2161 | info->type = new_serial.type; | |
eaa95a8d | 2162 | return 0; |
1da177e4 LT |
2163 | } |
2164 | ||
2165 | ||
2166 | ||
2167 | /***************************************************************************** | |
2168 | * Static local functions: * | |
2169 | *****************************************************************************/ | |
1da177e4 | 2170 | |
b4173f45 | 2171 | static void MoxaSetFifo(struct moxa_port *port, int enable) |
1da177e4 | 2172 | { |
b4173f45 | 2173 | void __iomem *ofsAddr = port->tableAddr; |
1da177e4 LT |
2174 | |
2175 | if (!enable) { | |
2176 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); | |
2177 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); | |
2178 | } else { | |
2179 | moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); | |
2180 | moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); | |
2181 | } | |
2182 | } |