Commit | Line | Data |
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037ad48b JS |
1 | /* |
2 | * mxser.c -- MOXA Smartio/Industio family multiport serial driver. | |
3 | * | |
3306ce3d | 4 | * Copyright (C) 1999-2006 Moxa Technologies (support@moxa.com.tw). |
c88cb8f9 | 5 | * Copyright (C) 2006 Jiri Slaby <jirislaby@gmail.com> |
037ad48b | 6 | * |
c88cb8f9 JS |
7 | * This code is loosely based on the 1.8 moxa driver which is based on |
8 | * Linux serial driver, written by Linus Torvalds, Theodore T'so and | |
9 | * others. | |
037ad48b JS |
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. | |
15 | * | |
037ad48b JS |
16 | * Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox |
17 | * <alan@redhat.com>. The original 1.8 code is available on www.moxa.com. | |
18 | * - Fixed x86_64 cleanness | |
19 | * - Fixed sleep with spinlock held in mxser_send_break | |
20 | */ | |
21 | ||
037ad48b JS |
22 | #include <linux/module.h> |
23 | #include <linux/autoconf.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/signal.h> | |
26 | #include <linux/sched.h> | |
27 | #include <linux/timer.h> | |
28 | #include <linux/interrupt.h> | |
29 | #include <linux/tty.h> | |
30 | #include <linux/tty_flip.h> | |
31 | #include <linux/serial.h> | |
32 | #include <linux/serial_reg.h> | |
33 | #include <linux/major.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/fcntl.h> | |
36 | #include <linux/ptrace.h> | |
37 | #include <linux/gfp.h> | |
38 | #include <linux/ioport.h> | |
39 | #include <linux/mm.h> | |
40 | #include <linux/smp_lock.h> | |
41 | #include <linux/delay.h> | |
42 | #include <linux/pci.h> | |
43 | ||
44 | #include <asm/system.h> | |
45 | #include <asm/io.h> | |
46 | #include <asm/irq.h> | |
47 | #include <asm/bitops.h> | |
48 | #include <asm/uaccess.h> | |
49 | ||
771f2d1a | 50 | #include "mxser_new.h" |
037ad48b | 51 | |
55b307da | 52 | #define MXSER_VERSION "2.0" |
037ad48b JS |
53 | #define MXSERMAJOR 174 |
54 | #define MXSERCUMAJOR 175 | |
55 | ||
56 | #define MXSER_EVENT_TXLOW 1 | |
57 | #define MXSER_EVENT_HANGUP 2 | |
58 | ||
59 | #define MXSER_BOARDS 4 /* Max. boards */ | |
60 | #define MXSER_PORTS 32 /* Max. ports */ | |
61 | #define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */ | |
3306ce3d | 62 | #define MXSER_ISR_PASS_LIMIT 99999L |
037ad48b JS |
63 | |
64 | #define MXSER_ERR_IOADDR -1 | |
65 | #define MXSER_ERR_IRQ -2 | |
66 | #define MXSER_ERR_IRQ_CONFLIT -3 | |
67 | #define MXSER_ERR_VECTOR -4 | |
68 | ||
69 | #define SERIAL_TYPE_NORMAL 1 | |
70 | #define SERIAL_TYPE_CALLOUT 2 | |
71 | ||
72 | #define WAKEUP_CHARS 256 | |
73 | ||
74 | #define UART_MCR_AFE 0x20 | |
75 | #define UART_LSR_SPECIAL 0x1E | |
76 | ||
77 | #define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|\ | |
78 | IXON|IXOFF)) | |
79 | ||
037ad48b JS |
80 | #define C168_ASIC_ID 1 |
81 | #define C104_ASIC_ID 2 | |
82 | #define C102_ASIC_ID 0xB | |
83 | #define CI132_ASIC_ID 4 | |
84 | #define CI134_ASIC_ID 3 | |
85 | #define CI104J_ASIC_ID 5 | |
86 | ||
87 | enum { | |
88 | MXSER_BOARD_C168_ISA = 1, | |
89 | MXSER_BOARD_C104_ISA, | |
90 | MXSER_BOARD_CI104J, | |
91 | MXSER_BOARD_C168_PCI, | |
92 | MXSER_BOARD_C104_PCI, | |
93 | MXSER_BOARD_C102_ISA, | |
94 | MXSER_BOARD_CI132, | |
95 | MXSER_BOARD_CI134, | |
96 | MXSER_BOARD_CP132, | |
97 | MXSER_BOARD_CP114, | |
98 | MXSER_BOARD_CT114, | |
99 | MXSER_BOARD_CP102, | |
100 | MXSER_BOARD_CP104U, | |
101 | MXSER_BOARD_CP168U, | |
102 | MXSER_BOARD_CP132U, | |
103 | MXSER_BOARD_CP134U, | |
104 | MXSER_BOARD_CP104JU, | |
105 | MXSER_BOARD_RC7000, | |
106 | MXSER_BOARD_CP118U, | |
107 | MXSER_BOARD_CP102UL, | |
108 | MXSER_BOARD_CP102U, | |
3306ce3d JS |
109 | MXSER_BOARD_CP118EL, |
110 | MXSER_BOARD_CP168EL, | |
111 | MXSER_BOARD_CP104EL | |
037ad48b JS |
112 | }; |
113 | ||
114 | static char *mxser_brdname[] = { | |
115 | "C168 series", | |
116 | "C104 series", | |
117 | "CI-104J series", | |
118 | "C168H/PCI series", | |
119 | "C104H/PCI series", | |
120 | "C102 series", | |
121 | "CI-132 series", | |
122 | "CI-134 series", | |
123 | "CP-132 series", | |
124 | "CP-114 series", | |
125 | "CT-114 series", | |
126 | "CP-102 series", | |
127 | "CP-104U series", | |
128 | "CP-168U series", | |
129 | "CP-132U series", | |
130 | "CP-134U series", | |
131 | "CP-104JU series", | |
132 | "Moxa UC7000 Serial", | |
133 | "CP-118U series", | |
134 | "CP-102UL series", | |
135 | "CP-102U series", | |
3306ce3d JS |
136 | "CP-118EL series", |
137 | "CP-168EL series", | |
138 | "CP-104EL series" | |
037ad48b JS |
139 | }; |
140 | ||
141 | static int mxser_numports[] = { | |
142 | 8, /* C168-ISA */ | |
143 | 4, /* C104-ISA */ | |
144 | 4, /* CI104J */ | |
145 | 8, /* C168-PCI */ | |
146 | 4, /* C104-PCI */ | |
147 | 2, /* C102-ISA */ | |
148 | 2, /* CI132 */ | |
149 | 4, /* CI134 */ | |
150 | 2, /* CP132 */ | |
151 | 4, /* CP114 */ | |
152 | 4, /* CT114 */ | |
153 | 2, /* CP102 */ | |
154 | 4, /* CP104U */ | |
155 | 8, /* CP168U */ | |
156 | 2, /* CP132U */ | |
157 | 4, /* CP134U */ | |
158 | 4, /* CP104JU */ | |
159 | 8, /* RC7000 */ | |
160 | 8, /* CP118U */ | |
161 | 2, /* CP102UL */ | |
162 | 2, /* CP102U */ | |
3306ce3d JS |
163 | 8, /* CP118EL */ |
164 | 8, /* CP168EL */ | |
165 | 4 /* CP104EL */ | |
037ad48b JS |
166 | }; |
167 | ||
168 | #define UART_TYPE_NUM 2 | |
169 | ||
170 | static const unsigned int Gmoxa_uart_id[UART_TYPE_NUM] = { | |
171 | MOXA_MUST_MU150_HWID, | |
172 | MOXA_MUST_MU860_HWID | |
173 | }; | |
174 | ||
175 | /* This is only for PCI */ | |
176 | #define UART_INFO_NUM 3 | |
177 | struct mxpciuart_info { | |
178 | int type; | |
179 | int tx_fifo; | |
180 | int rx_fifo; | |
181 | int xmit_fifo_size; | |
182 | int rx_high_water; | |
183 | int rx_trigger; | |
184 | int rx_low_water; | |
185 | long max_baud; | |
186 | }; | |
187 | ||
188 | static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = { | |
189 | {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L}, | |
190 | {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L}, | |
191 | {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} | |
192 | }; | |
193 | ||
037ad48b | 194 | static struct pci_device_id mxser_pcibrds[] = { |
3306ce3d JS |
195 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168), |
196 | .driver_data = MXSER_BOARD_C168_PCI }, | |
197 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104), | |
198 | .driver_data = MXSER_BOARD_C104_PCI }, | |
199 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132), | |
200 | .driver_data = MXSER_BOARD_CP132 }, | |
201 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114), | |
202 | .driver_data = MXSER_BOARD_CP114 }, | |
203 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114), | |
204 | .driver_data = MXSER_BOARD_CT114 }, | |
205 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102), | |
206 | .driver_data = MXSER_BOARD_CP102 }, | |
207 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U), | |
208 | .driver_data = MXSER_BOARD_CP104U }, | |
209 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U), | |
210 | .driver_data = MXSER_BOARD_CP168U }, | |
211 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U), | |
212 | .driver_data = MXSER_BOARD_CP132U }, | |
213 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U), | |
214 | .driver_data = MXSER_BOARD_CP134U }, | |
215 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU), | |
216 | .driver_data = MXSER_BOARD_CP104JU }, | |
217 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000), | |
218 | .driver_data = MXSER_BOARD_RC7000 }, | |
219 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U), | |
220 | .driver_data = MXSER_BOARD_CP118U }, | |
221 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL), | |
222 | .driver_data = MXSER_BOARD_CP102UL }, | |
223 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U), | |
224 | .driver_data = MXSER_BOARD_CP102U }, | |
225 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118EL), | |
226 | .driver_data = MXSER_BOARD_CP118EL }, | |
227 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168EL), | |
228 | .driver_data = MXSER_BOARD_CP168EL }, | |
229 | { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104EL), | |
230 | .driver_data = MXSER_BOARD_CP104EL }, | |
231 | { } | |
037ad48b | 232 | }; |
037ad48b JS |
233 | MODULE_DEVICE_TABLE(pci, mxser_pcibrds); |
234 | ||
037ad48b JS |
235 | static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 }; |
236 | static int ttymajor = MXSERMAJOR; | |
237 | static int calloutmajor = MXSERCUMAJOR; | |
037ad48b JS |
238 | |
239 | /* Variables for insmod */ | |
240 | ||
241 | MODULE_AUTHOR("Casper Yang"); | |
242 | MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); | |
243 | module_param_array(ioaddr, int, NULL, 0); | |
244 | module_param(ttymajor, int, 0); | |
037ad48b JS |
245 | MODULE_LICENSE("GPL"); |
246 | ||
247 | struct mxser_log { | |
248 | int tick; | |
249 | unsigned long rxcnt[MXSER_PORTS]; | |
250 | unsigned long txcnt[MXSER_PORTS]; | |
251 | }; | |
252 | ||
253 | ||
254 | struct mxser_mon { | |
255 | unsigned long rxcnt; | |
256 | unsigned long txcnt; | |
257 | unsigned long up_rxcnt; | |
258 | unsigned long up_txcnt; | |
259 | int modem_status; | |
260 | unsigned char hold_reason; | |
261 | }; | |
262 | ||
263 | struct mxser_mon_ext { | |
264 | unsigned long rx_cnt[32]; | |
265 | unsigned long tx_cnt[32]; | |
266 | unsigned long up_rxcnt[32]; | |
267 | unsigned long up_txcnt[32]; | |
268 | int modem_status[32]; | |
269 | ||
270 | long baudrate[32]; | |
271 | int databits[32]; | |
272 | int stopbits[32]; | |
273 | int parity[32]; | |
274 | int flowctrl[32]; | |
275 | int fifo[32]; | |
276 | int iftype[32]; | |
277 | }; | |
278 | ||
55b307da JS |
279 | struct mxser_board; |
280 | ||
281 | struct mxser_port { | |
282 | struct mxser_board *board; | |
283 | struct tty_struct *tty; | |
284 | ||
285 | unsigned long ioaddr; | |
286 | unsigned long opmode_ioaddr; | |
287 | int max_baud; | |
037ad48b | 288 | |
037ad48b JS |
289 | int rx_high_water; |
290 | int rx_trigger; /* Rx fifo trigger level */ | |
291 | int rx_low_water; | |
292 | int baud_base; /* max. speed */ | |
55b307da | 293 | long realbaud; |
037ad48b | 294 | int type; /* UART type */ |
55b307da JS |
295 | int flags; /* defined in tty.h */ |
296 | long session; /* Session of opening process */ | |
297 | long pgrp; /* pgrp of opening process */ | |
298 | ||
037ad48b | 299 | int x_char; /* xon/xoff character */ |
037ad48b JS |
300 | int IER; /* Interrupt Enable Register */ |
301 | int MCR; /* Modem control register */ | |
55b307da JS |
302 | |
303 | unsigned char stop_rx; | |
304 | unsigned char ldisc_stop_rx; | |
305 | ||
306 | int custom_divisor; | |
307 | int close_delay; | |
308 | unsigned short closing_wait; | |
309 | unsigned char err_shadow; | |
037ad48b | 310 | unsigned long event; |
55b307da | 311 | |
037ad48b JS |
312 | int count; /* # of fd on device */ |
313 | int blocked_open; /* # of blocked opens */ | |
55b307da JS |
314 | struct async_icount icount; /* kernel counters for 4 input interrupts */ |
315 | int timeout; | |
316 | ||
317 | int read_status_mask; | |
318 | int ignore_status_mask; | |
319 | int xmit_fifo_size; | |
037ad48b JS |
320 | unsigned char *xmit_buf; |
321 | int xmit_head; | |
322 | int xmit_tail; | |
323 | int xmit_cnt; | |
55b307da | 324 | |
037ad48b JS |
325 | struct termios normal_termios; |
326 | struct termios callout_termios; | |
55b307da JS |
327 | |
328 | struct mxser_mon mon_data; | |
329 | ||
330 | spinlock_t slock; | |
331 | struct work_struct tqueue; | |
037ad48b JS |
332 | wait_queue_head_t open_wait; |
333 | wait_queue_head_t close_wait; | |
334 | wait_queue_head_t delta_msr_wait; | |
55b307da JS |
335 | }; |
336 | ||
337 | struct mxser_board { | |
338 | struct pci_dev *pdev; /* temporary (until pci probing) */ | |
339 | ||
340 | int irq; | |
341 | int board_type; | |
342 | unsigned int nports; | |
343 | unsigned long vector; | |
344 | unsigned long vector_mask; | |
345 | ||
346 | int chip_flag; | |
347 | int uart_type; | |
348 | ||
349 | struct mxser_port ports[MXSER_PORTS_PER_BOARD]; | |
037ad48b JS |
350 | }; |
351 | ||
352 | struct mxser_mstatus { | |
353 | tcflag_t cflag; | |
354 | int cts; | |
355 | int dsr; | |
356 | int ri; | |
357 | int dcd; | |
358 | }; | |
359 | ||
360 | static struct mxser_mstatus GMStatus[MXSER_PORTS]; | |
361 | ||
362 | static int mxserBoardCAP[MXSER_BOARDS] = { | |
363 | 0, 0, 0, 0 | |
364 | /* 0x180, 0x280, 0x200, 0x320 */ | |
365 | }; | |
366 | ||
55b307da | 367 | static struct mxser_board mxser_boards[MXSER_BOARDS]; |
037ad48b | 368 | static struct tty_driver *mxvar_sdriver; |
037ad48b JS |
369 | static struct tty_struct *mxvar_tty[MXSER_PORTS + 1]; |
370 | static struct termios *mxvar_termios[MXSER_PORTS + 1]; | |
371 | static struct termios *mxvar_termios_locked[MXSER_PORTS + 1]; | |
372 | static struct mxser_log mxvar_log; | |
373 | static int mxvar_diagflag; | |
374 | static unsigned char mxser_msr[MXSER_PORTS + 1]; | |
375 | static struct mxser_mon_ext mon_data_ext; | |
376 | static int mxser_set_baud_method[MXSER_PORTS + 1]; | |
377 | static spinlock_t gm_lock; | |
378 | ||
037ad48b JS |
379 | static int CheckIsMoxaMust(int io) |
380 | { | |
381 | u8 oldmcr, hwid; | |
382 | int i; | |
383 | ||
384 | outb(0, io + UART_LCR); | |
385 | DISABLE_MOXA_MUST_ENCHANCE_MODE(io); | |
386 | oldmcr = inb(io + UART_MCR); | |
387 | outb(0, io + UART_MCR); | |
388 | SET_MOXA_MUST_XON1_VALUE(io, 0x11); | |
389 | if ((hwid = inb(io + UART_MCR)) != 0) { | |
390 | outb(oldmcr, io + UART_MCR); | |
391 | return MOXA_OTHER_UART; | |
392 | } | |
393 | ||
394 | GET_MOXA_MUST_HARDWARE_ID(io, &hwid); | |
395 | for (i = 0; i < UART_TYPE_NUM; i++) { | |
396 | if (hwid == Gmoxa_uart_id[i]) | |
397 | return (int)hwid; | |
398 | } | |
399 | return MOXA_OTHER_UART; | |
400 | } | |
401 | ||
402 | /* above is modified by Victor Yu. 08-15-2002 */ | |
403 | ||
55b307da | 404 | static void process_txrx_fifo(struct mxser_port *info) |
037ad48b JS |
405 | { |
406 | int i; | |
407 | ||
408 | if ((info->type == PORT_16450) || (info->type == PORT_8250)) { | |
409 | info->rx_trigger = 1; | |
410 | info->rx_high_water = 1; | |
411 | info->rx_low_water = 1; | |
412 | info->xmit_fifo_size = 1; | |
55b307da JS |
413 | } else |
414 | for (i = 0; i < UART_INFO_NUM; i++) | |
415 | if (info->board->chip_flag == Gpci_uart_info[i].type) { | |
037ad48b JS |
416 | info->rx_trigger = Gpci_uart_info[i].rx_trigger; |
417 | info->rx_low_water = Gpci_uart_info[i].rx_low_water; | |
418 | info->rx_high_water = Gpci_uart_info[i].rx_high_water; | |
419 | info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size; | |
420 | break; | |
421 | } | |
037ad48b JS |
422 | } |
423 | ||
a8dea4ec | 424 | static void mxser_do_softint(void *private_) |
037ad48b | 425 | { |
a8dea4ec JS |
426 | struct mxser_port *info = private_; |
427 | struct tty_struct *tty; | |
037ad48b | 428 | |
a8dea4ec | 429 | tty = info->tty; |
037ad48b | 430 | |
a8dea4ec JS |
431 | if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event)) |
432 | tty_wakeup(tty); | |
433 | if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event)) | |
434 | tty_hangup(tty); | |
435 | } | |
037ad48b | 436 | |
a8dea4ec JS |
437 | static unsigned char mxser_get_msr(int baseaddr, int mode, int port) |
438 | { | |
439 | unsigned char status = 0; | |
037ad48b | 440 | |
a8dea4ec | 441 | status = inb(baseaddr + UART_MSR); |
037ad48b | 442 | |
a8dea4ec JS |
443 | mxser_msr[port] &= 0x0F; |
444 | mxser_msr[port] |= status; | |
445 | status = mxser_msr[port]; | |
446 | if (mode) | |
447 | mxser_msr[port] = 0; | |
037ad48b | 448 | |
a8dea4ec JS |
449 | return status; |
450 | } | |
55b307da | 451 | |
a8dea4ec JS |
452 | static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, |
453 | struct mxser_port *port) | |
454 | { | |
455 | DECLARE_WAITQUEUE(wait, current); | |
456 | int retval; | |
457 | int do_clocal = 0; | |
458 | unsigned long flags; | |
459 | ||
460 | /* | |
461 | * If non-blocking mode is set, or the port is not enabled, | |
462 | * then make the check up front and then exit. | |
463 | */ | |
214efebb JS |
464 | if ((filp->f_flags & O_NONBLOCK) || |
465 | test_bit(TTY_IO_ERROR, &tty->flags)) { | |
a8dea4ec JS |
466 | port->flags |= ASYNC_NORMAL_ACTIVE; |
467 | return 0; | |
037ad48b | 468 | } |
a8dea4ec JS |
469 | |
470 | if (tty->termios->c_cflag & CLOCAL) | |
471 | do_clocal = 1; | |
472 | ||
037ad48b | 473 | /* |
a8dea4ec JS |
474 | * Block waiting for the carrier detect and the line to become |
475 | * free (i.e., not in use by the callout). While we are in | |
476 | * this loop, port->count is dropped by one, so that | |
477 | * mxser_close() knows when to free things. We restore it upon | |
478 | * exit, either normal or abnormal. | |
037ad48b | 479 | */ |
a8dea4ec JS |
480 | retval = 0; |
481 | add_wait_queue(&port->open_wait, &wait); | |
037ad48b | 482 | |
a8dea4ec JS |
483 | spin_lock_irqsave(&port->slock, flags); |
484 | if (!tty_hung_up_p(filp)) | |
485 | port->count--; | |
486 | spin_unlock_irqrestore(&port->slock, flags); | |
487 | port->blocked_open++; | |
488 | while (1) { | |
489 | spin_lock_irqsave(&port->slock, flags); | |
490 | outb(inb(port->ioaddr + UART_MCR) | | |
491 | UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR); | |
492 | spin_unlock_irqrestore(&port->slock, flags); | |
493 | set_current_state(TASK_INTERRUPTIBLE); | |
494 | if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { | |
495 | if (port->flags & ASYNC_HUP_NOTIFY) | |
496 | retval = -EAGAIN; | |
497 | else | |
498 | retval = -ERESTARTSYS; | |
499 | break; | |
500 | } | |
501 | if (!(port->flags & ASYNC_CLOSING) && | |
502 | (do_clocal || | |
503 | (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD))) | |
504 | break; | |
505 | if (signal_pending(current)) { | |
506 | retval = -ERESTARTSYS; | |
507 | break; | |
508 | } | |
509 | schedule(); | |
037ad48b | 510 | } |
a8dea4ec JS |
511 | set_current_state(TASK_RUNNING); |
512 | remove_wait_queue(&port->open_wait, &wait); | |
513 | if (!tty_hung_up_p(filp)) | |
514 | port->count++; | |
515 | port->blocked_open--; | |
516 | if (retval) | |
517 | return retval; | |
518 | port->flags |= ASYNC_NORMAL_ACTIVE; | |
037ad48b JS |
519 | return 0; |
520 | } | |
521 | ||
a8dea4ec | 522 | static int mxser_set_baud(struct mxser_port *info, long newspd) |
037ad48b | 523 | { |
a8dea4ec JS |
524 | int quot = 0; |
525 | unsigned char cval; | |
526 | int ret = 0; | |
527 | unsigned long flags; | |
037ad48b | 528 | |
a8dea4ec JS |
529 | if (!info->tty || !info->tty->termios) |
530 | return ret; | |
037ad48b | 531 | |
a8dea4ec JS |
532 | if (!(info->ioaddr)) |
533 | return ret; | |
037ad48b | 534 | |
a8dea4ec JS |
535 | if (newspd > info->max_baud) |
536 | return 0; | |
037ad48b | 537 | |
a8dea4ec JS |
538 | info->realbaud = newspd; |
539 | if (newspd == 134) { | |
540 | quot = (2 * info->baud_base / 269); | |
541 | } else if (newspd) { | |
542 | quot = info->baud_base / newspd; | |
543 | if (quot == 0) | |
544 | quot = 1; | |
545 | } else { | |
546 | quot = 0; | |
037ad48b JS |
547 | } |
548 | ||
a8dea4ec JS |
549 | info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base); |
550 | info->timeout += HZ / 50; /* Add .02 seconds of slop */ | |
037ad48b | 551 | |
a8dea4ec JS |
552 | if (quot) { |
553 | spin_lock_irqsave(&info->slock, flags); | |
554 | info->MCR |= UART_MCR_DTR; | |
555 | outb(info->MCR, info->ioaddr + UART_MCR); | |
556 | spin_unlock_irqrestore(&info->slock, flags); | |
557 | } else { | |
558 | spin_lock_irqsave(&info->slock, flags); | |
559 | info->MCR &= ~UART_MCR_DTR; | |
560 | outb(info->MCR, info->ioaddr + UART_MCR); | |
561 | spin_unlock_irqrestore(&info->slock, flags); | |
562 | return ret; | |
037ad48b | 563 | } |
037ad48b | 564 | |
a8dea4ec | 565 | cval = inb(info->ioaddr + UART_LCR); |
037ad48b | 566 | |
a8dea4ec | 567 | outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */ |
037ad48b | 568 | |
a8dea4ec JS |
569 | outb(quot & 0xff, info->ioaddr + UART_DLL); /* LS of divisor */ |
570 | outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */ | |
571 | outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */ | |
037ad48b | 572 | |
037ad48b | 573 | |
a8dea4ec JS |
574 | return ret; |
575 | } | |
037ad48b | 576 | |
a8dea4ec JS |
577 | /* |
578 | * This routine is called to set the UART divisor registers to match | |
579 | * the specified baud rate for a serial port. | |
580 | */ | |
581 | static int mxser_change_speed(struct mxser_port *info, | |
582 | struct termios *old_termios) | |
583 | { | |
584 | unsigned cflag, cval, fcr; | |
585 | int ret = 0; | |
586 | unsigned char status; | |
587 | long baud; | |
588 | unsigned long flags; | |
037ad48b | 589 | |
a8dea4ec JS |
590 | if (!info->tty || !info->tty->termios) |
591 | return ret; | |
592 | cflag = info->tty->termios->c_cflag; | |
593 | if (!(info->ioaddr)) | |
594 | return ret; | |
037ad48b | 595 | |
a8dea4ec JS |
596 | if (mxser_set_baud_method[info->tty->index] == 0) { |
597 | baud = tty_get_baud_rate(info->tty); | |
598 | mxser_set_baud(info, baud); | |
599 | } | |
037ad48b | 600 | |
a8dea4ec JS |
601 | /* byte size and parity */ |
602 | switch (cflag & CSIZE) { | |
603 | case CS5: | |
604 | cval = 0x00; | |
605 | break; | |
606 | case CS6: | |
607 | cval = 0x01; | |
608 | break; | |
609 | case CS7: | |
610 | cval = 0x02; | |
611 | break; | |
612 | case CS8: | |
613 | cval = 0x03; | |
614 | break; | |
615 | default: | |
616 | cval = 0x00; | |
617 | break; /* too keep GCC shut... */ | |
618 | } | |
619 | if (cflag & CSTOPB) | |
620 | cval |= 0x04; | |
621 | if (cflag & PARENB) | |
622 | cval |= UART_LCR_PARITY; | |
623 | if (!(cflag & PARODD)) | |
624 | cval |= UART_LCR_EPAR; | |
625 | if (cflag & CMSPAR) | |
626 | cval |= UART_LCR_SPAR; | |
037ad48b | 627 | |
a8dea4ec JS |
628 | if ((info->type == PORT_8250) || (info->type == PORT_16450)) { |
629 | if (info->board->chip_flag) { | |
630 | fcr = UART_FCR_ENABLE_FIFO; | |
631 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; | |
632 | SET_MOXA_MUST_FIFO_VALUE(info); | |
633 | } else | |
634 | fcr = 0; | |
635 | } else { | |
636 | fcr = UART_FCR_ENABLE_FIFO; | |
637 | /* following add by Victor Yu. 08-30-2002 */ | |
638 | if (info->board->chip_flag) { | |
639 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; | |
640 | SET_MOXA_MUST_FIFO_VALUE(info); | |
641 | } else { | |
642 | /* above add by Victor Yu. 08-30-2002 */ | |
643 | switch (info->rx_trigger) { | |
644 | case 1: | |
645 | fcr |= UART_FCR_TRIGGER_1; | |
646 | break; | |
647 | case 4: | |
648 | fcr |= UART_FCR_TRIGGER_4; | |
649 | break; | |
650 | case 8: | |
651 | fcr |= UART_FCR_TRIGGER_8; | |
652 | break; | |
653 | default: | |
654 | fcr |= UART_FCR_TRIGGER_14; | |
655 | break; | |
656 | } | |
037ad48b | 657 | } |
037ad48b JS |
658 | } |
659 | ||
a8dea4ec JS |
660 | /* CTS flow control flag and modem status interrupts */ |
661 | info->IER &= ~UART_IER_MSI; | |
662 | info->MCR &= ~UART_MCR_AFE; | |
663 | if (cflag & CRTSCTS) { | |
664 | info->flags |= ASYNC_CTS_FLOW; | |
665 | info->IER |= UART_IER_MSI; | |
666 | if ((info->type == PORT_16550A) || (info->board->chip_flag)) { | |
667 | info->MCR |= UART_MCR_AFE; | |
668 | /* status = mxser_get_msr(info->ioaddr, 0, info->port); */ | |
669 | /* | |
670 | save_flags(flags); | |
671 | cli(); | |
672 | status = inb(baseaddr + UART_MSR); | |
673 | restore_flags(flags); | |
674 | */ | |
675 | /* mxser_check_modem_status(info, status); */ | |
676 | } else { | |
677 | /* status = mxser_get_msr(info->ioaddr, 0, info->port); */ | |
678 | /* MX_LOCK(&info->slock); */ | |
679 | status = inb(info->ioaddr + UART_MSR); | |
680 | /* MX_UNLOCK(&info->slock); */ | |
681 | if (info->tty->hw_stopped) { | |
682 | if (status & UART_MSR_CTS) { | |
683 | info->tty->hw_stopped = 0; | |
684 | if (info->type != PORT_16550A && | |
685 | !info->board->chip_flag) { | |
686 | outb(info->IER & ~UART_IER_THRI, | |
687 | info->ioaddr + | |
688 | UART_IER); | |
689 | info->IER |= UART_IER_THRI; | |
690 | outb(info->IER, info->ioaddr + | |
691 | UART_IER); | |
692 | } | |
693 | set_bit(MXSER_EVENT_TXLOW, &info->event); | |
694 | schedule_work(&info->tqueue); } | |
695 | } else { | |
696 | if (!(status & UART_MSR_CTS)) { | |
697 | info->tty->hw_stopped = 1; | |
698 | if ((info->type != PORT_16550A) && | |
699 | (!info->board->chip_flag)) { | |
700 | info->IER &= ~UART_IER_THRI; | |
701 | outb(info->IER, info->ioaddr + | |
702 | UART_IER); | |
703 | } | |
704 | } | |
705 | } | |
706 | } | |
707 | } else { | |
708 | info->flags &= ~ASYNC_CTS_FLOW; | |
709 | } | |
710 | outb(info->MCR, info->ioaddr + UART_MCR); | |
711 | if (cflag & CLOCAL) { | |
712 | info->flags &= ~ASYNC_CHECK_CD; | |
713 | } else { | |
714 | info->flags |= ASYNC_CHECK_CD; | |
715 | info->IER |= UART_IER_MSI; | |
716 | } | |
717 | outb(info->IER, info->ioaddr + UART_IER); | |
037ad48b | 718 | |
a8dea4ec JS |
719 | /* |
720 | * Set up parity check flag | |
721 | */ | |
722 | info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; | |
723 | if (I_INPCK(info->tty)) | |
724 | info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; | |
725 | if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) | |
726 | info->read_status_mask |= UART_LSR_BI; | |
037ad48b | 727 | |
a8dea4ec | 728 | info->ignore_status_mask = 0; |
037ad48b | 729 | |
a8dea4ec JS |
730 | if (I_IGNBRK(info->tty)) { |
731 | info->ignore_status_mask |= UART_LSR_BI; | |
732 | info->read_status_mask |= UART_LSR_BI; | |
733 | /* | |
734 | * If we're ignore parity and break indicators, ignore | |
735 | * overruns too. (For real raw support). | |
736 | */ | |
737 | if (I_IGNPAR(info->tty)) { | |
738 | info->ignore_status_mask |= | |
739 | UART_LSR_OE | | |
740 | UART_LSR_PE | | |
741 | UART_LSR_FE; | |
742 | info->read_status_mask |= | |
743 | UART_LSR_OE | | |
744 | UART_LSR_PE | | |
745 | UART_LSR_FE; | |
037ad48b | 746 | } |
037ad48b | 747 | } |
a8dea4ec JS |
748 | /* following add by Victor Yu. 09-02-2002 */ |
749 | if (info->board->chip_flag) { | |
750 | spin_lock_irqsave(&info->slock, flags); | |
751 | SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty)); | |
752 | SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty)); | |
753 | if (I_IXON(info->tty)) { | |
754 | ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr); | |
755 | } else { | |
756 | DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr); | |
037ad48b | 757 | } |
a8dea4ec JS |
758 | if (I_IXOFF(info->tty)) { |
759 | ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr); | |
760 | } else { | |
761 | DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr); | |
037ad48b | 762 | } |
a8dea4ec JS |
763 | /* |
764 | if ( I_IXANY(info->tty) ) { | |
765 | info->MCR |= MOXA_MUST_MCR_XON_ANY; | |
766 | ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr); | |
767 | } else { | |
768 | info->MCR &= ~MOXA_MUST_MCR_XON_ANY; | |
769 | DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->ioaddr); | |
770 | } | |
771 | */ | |
772 | spin_unlock_irqrestore(&info->slock, flags); | |
037ad48b | 773 | } |
a8dea4ec | 774 | /* above add by Victor Yu. 09-02-2002 */ |
037ad48b | 775 | |
037ad48b | 776 | |
a8dea4ec JS |
777 | outb(fcr, info->ioaddr + UART_FCR); /* set fcr */ |
778 | outb(cval, info->ioaddr + UART_LCR); | |
037ad48b | 779 | |
a8dea4ec | 780 | return ret; |
037ad48b JS |
781 | } |
782 | ||
a8dea4ec | 783 | static void mxser_check_modem_status(struct mxser_port *port, int status) |
037ad48b | 784 | { |
a8dea4ec JS |
785 | /* update input line counters */ |
786 | if (status & UART_MSR_TERI) | |
787 | port->icount.rng++; | |
788 | if (status & UART_MSR_DDSR) | |
789 | port->icount.dsr++; | |
790 | if (status & UART_MSR_DDCD) | |
791 | port->icount.dcd++; | |
792 | if (status & UART_MSR_DCTS) | |
793 | port->icount.cts++; | |
794 | port->mon_data.modem_status = status; | |
795 | wake_up_interruptible(&port->delta_msr_wait); | |
037ad48b | 796 | |
a8dea4ec JS |
797 | if ((port->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { |
798 | if (status & UART_MSR_DCD) | |
799 | wake_up_interruptible(&port->open_wait); | |
800 | schedule_work(&port->tqueue); | |
801 | } | |
037ad48b | 802 | |
a8dea4ec JS |
803 | if (port->flags & ASYNC_CTS_FLOW) { |
804 | if (port->tty->hw_stopped) { | |
805 | if (status & UART_MSR_CTS) { | |
806 | port->tty->hw_stopped = 0; | |
807 | ||
808 | if ((port->type != PORT_16550A) && | |
809 | (!port->board->chip_flag)) { | |
810 | outb(port->IER & ~UART_IER_THRI, | |
811 | port->ioaddr + UART_IER); | |
812 | port->IER |= UART_IER_THRI; | |
813 | outb(port->IER, port->ioaddr + | |
814 | UART_IER); | |
815 | } | |
816 | set_bit(MXSER_EVENT_TXLOW, &port->event); | |
817 | schedule_work(&port->tqueue); | |
818 | } | |
819 | } else { | |
820 | if (!(status & UART_MSR_CTS)) { | |
821 | port->tty->hw_stopped = 1; | |
822 | if (port->type != PORT_16550A && | |
823 | !port->board->chip_flag) { | |
824 | port->IER &= ~UART_IER_THRI; | |
825 | outb(port->IER, port->ioaddr + | |
826 | UART_IER); | |
827 | } | |
828 | } | |
829 | } | |
830 | } | |
037ad48b JS |
831 | } |
832 | ||
a8dea4ec | 833 | static int mxser_startup(struct mxser_port *info) |
037ad48b | 834 | { |
a8dea4ec JS |
835 | unsigned long page; |
836 | unsigned long flags; | |
037ad48b | 837 | |
a8dea4ec JS |
838 | page = __get_free_page(GFP_KERNEL); |
839 | if (!page) | |
840 | return -ENOMEM; | |
037ad48b | 841 | |
a8dea4ec | 842 | spin_lock_irqsave(&info->slock, flags); |
037ad48b | 843 | |
a8dea4ec JS |
844 | if (info->flags & ASYNC_INITIALIZED) { |
845 | free_page(page); | |
846 | spin_unlock_irqrestore(&info->slock, flags); | |
847 | return 0; | |
848 | } | |
037ad48b | 849 | |
a8dea4ec JS |
850 | if (!info->ioaddr || !info->type) { |
851 | if (info->tty) | |
852 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
853 | free_page(page); | |
854 | spin_unlock_irqrestore(&info->slock, flags); | |
037ad48b | 855 | return 0; |
a8dea4ec JS |
856 | } |
857 | if (info->xmit_buf) | |
858 | free_page(page); | |
859 | else | |
860 | info->xmit_buf = (unsigned char *) page; | |
037ad48b | 861 | |
037ad48b | 862 | /* |
a8dea4ec JS |
863 | * Clear the FIFO buffers and disable them |
864 | * (they will be reenabled in mxser_change_speed()) | |
037ad48b | 865 | */ |
a8dea4ec JS |
866 | if (info->board->chip_flag) |
867 | outb((UART_FCR_CLEAR_RCVR | | |
868 | UART_FCR_CLEAR_XMIT | | |
869 | MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR); | |
870 | else | |
871 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), | |
872 | info->ioaddr + UART_FCR); | |
873 | ||
874 | /* | |
875 | * At this point there's no way the LSR could still be 0xFF; | |
876 | * if it is, then bail out, because there's likely no UART | |
877 | * here. | |
878 | */ | |
879 | if (inb(info->ioaddr + UART_LSR) == 0xff) { | |
880 | spin_unlock_irqrestore(&info->slock, flags); | |
881 | if (capable(CAP_SYS_ADMIN)) { | |
882 | if (info->tty) | |
883 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
884 | return 0; | |
885 | } else | |
886 | return -ENODEV; | |
887 | } | |
888 | ||
889 | /* | |
890 | * Clear the interrupt registers. | |
891 | */ | |
892 | (void) inb(info->ioaddr + UART_LSR); | |
893 | (void) inb(info->ioaddr + UART_RX); | |
894 | (void) inb(info->ioaddr + UART_IIR); | |
895 | (void) inb(info->ioaddr + UART_MSR); | |
896 | ||
897 | /* | |
898 | * Now, initialize the UART | |
899 | */ | |
900 | outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR); /* reset DLAB */ | |
901 | info->MCR = UART_MCR_DTR | UART_MCR_RTS; | |
902 | outb(info->MCR, info->ioaddr + UART_MCR); | |
903 | ||
904 | /* | |
905 | * Finally, enable interrupts | |
906 | */ | |
907 | info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; | |
908 | /* info->IER = UART_IER_RLSI | UART_IER_RDI; */ | |
909 | ||
910 | /* following add by Victor Yu. 08-30-2002 */ | |
911 | if (info->board->chip_flag) | |
912 | info->IER |= MOXA_MUST_IER_EGDAI; | |
913 | /* above add by Victor Yu. 08-30-2002 */ | |
914 | outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */ | |
915 | ||
916 | /* | |
917 | * And clear the interrupt registers again for luck. | |
918 | */ | |
919 | (void) inb(info->ioaddr + UART_LSR); | |
920 | (void) inb(info->ioaddr + UART_RX); | |
921 | (void) inb(info->ioaddr + UART_IIR); | |
922 | (void) inb(info->ioaddr + UART_MSR); | |
923 | ||
924 | if (info->tty) | |
925 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
926 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
927 | ||
928 | /* | |
929 | * and set the speed of the serial port | |
930 | */ | |
931 | spin_unlock_irqrestore(&info->slock, flags); | |
932 | mxser_change_speed(info, NULL); | |
933 | ||
934 | info->flags |= ASYNC_INITIALIZED; | |
935 | return 0; | |
936 | } | |
937 | ||
938 | /* | |
939 | * This routine will shutdown a serial port; interrupts maybe disabled, and | |
940 | * DTR is dropped if the hangup on close termio flag is on. | |
941 | */ | |
942 | static void mxser_shutdown(struct mxser_port *info) | |
943 | { | |
944 | unsigned long flags; | |
945 | ||
946 | if (!(info->flags & ASYNC_INITIALIZED)) | |
947 | return; | |
948 | ||
949 | spin_lock_irqsave(&info->slock, flags); | |
950 | ||
951 | /* | |
952 | * clear delta_msr_wait queue to avoid mem leaks: we may free the irq | |
953 | * here so the queue might never be waken up | |
954 | */ | |
955 | wake_up_interruptible(&info->delta_msr_wait); | |
956 | ||
957 | /* | |
958 | * Free the IRQ, if necessary | |
959 | */ | |
960 | if (info->xmit_buf) { | |
961 | free_page((unsigned long) info->xmit_buf); | |
962 | info->xmit_buf = NULL; | |
963 | } | |
964 | ||
965 | info->IER = 0; | |
966 | outb(0x00, info->ioaddr + UART_IER); | |
967 | ||
968 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) | |
969 | info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS); | |
970 | outb(info->MCR, info->ioaddr + UART_MCR); | |
971 | ||
972 | /* clear Rx/Tx FIFO's */ | |
973 | /* following add by Victor Yu. 08-30-2002 */ | |
974 | if (info->board->chip_flag) | |
975 | outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | | |
976 | MOXA_MUST_FCR_GDA_MODE_ENABLE, | |
977 | info->ioaddr + UART_FCR); | |
978 | else | |
979 | /* above add by Victor Yu. 08-30-2002 */ | |
980 | outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT, | |
981 | info->ioaddr + UART_FCR); | |
982 | ||
983 | /* read data port to reset things */ | |
984 | (void) inb(info->ioaddr + UART_RX); | |
985 | ||
986 | if (info->tty) | |
987 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
988 | ||
989 | info->flags &= ~ASYNC_INITIALIZED; | |
990 | ||
991 | /* following add by Victor Yu. 09-23-2002 */ | |
992 | if (info->board->chip_flag) | |
993 | SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr); | |
994 | /* above add by Victor Yu. 09-23-2002 */ | |
995 | ||
996 | spin_unlock_irqrestore(&info->slock, flags); | |
997 | } | |
998 | ||
999 | /* | |
1000 | * This routine is called whenever a serial port is opened. It | |
1001 | * enables interrupts for a serial port, linking in its async structure into | |
1002 | * the IRQ chain. It also performs the serial-specific | |
1003 | * initialization for the tty structure. | |
1004 | */ | |
1005 | static int mxser_open(struct tty_struct *tty, struct file *filp) | |
1006 | { | |
1007 | struct mxser_port *info; | |
1008 | int retval, line; | |
1009 | ||
1010 | /* initialize driver_data in case something fails */ | |
1011 | tty->driver_data = NULL; | |
1012 | ||
1013 | line = tty->index; | |
1014 | if (line == MXSER_PORTS) | |
1015 | return 0; | |
1016 | if (line < 0 || line > MXSER_PORTS) | |
1017 | return -ENODEV; | |
1018 | info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD]; | |
1019 | if (!info->ioaddr) | |
1020 | return -ENODEV; | |
1021 | ||
1022 | tty->driver_data = info; | |
1023 | info->tty = tty; | |
1024 | /* | |
1025 | * Start up serial port | |
1026 | */ | |
1027 | info->count++; | |
1028 | retval = mxser_startup(info); | |
1029 | if (retval) | |
1030 | return retval; | |
1031 | ||
1032 | retval = mxser_block_til_ready(tty, filp, info); | |
1033 | if (retval) | |
1034 | return retval; | |
1035 | ||
1036 | if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) { | |
037ad48b JS |
1037 | if (tty->driver->subtype == SERIAL_TYPE_NORMAL) |
1038 | *tty->termios = info->normal_termios; | |
1039 | else | |
1040 | *tty->termios = info->callout_termios; | |
1041 | mxser_change_speed(info, NULL); | |
1042 | } | |
1043 | ||
08a4ae44 | 1044 | info->session = process_session(current); |
037ad48b JS |
1045 | info->pgrp = process_group(current); |
1046 | ||
1047 | /* | |
1048 | status = mxser_get_msr(info->base, 0, info->port); | |
1049 | mxser_check_modem_status(info, status); | |
1050 | */ | |
1051 | ||
1052 | /* unmark here for very high baud rate (ex. 921600 bps) used */ | |
1053 | tty->low_latency = 1; | |
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * This routine is called when the serial port gets closed. First, we | |
1059 | * wait for the last remaining data to be sent. Then, we unlink its | |
1060 | * async structure from the interrupt chain if necessary, and we free | |
1061 | * that IRQ if nothing is left in the chain. | |
1062 | */ | |
1063 | static void mxser_close(struct tty_struct *tty, struct file *filp) | |
1064 | { | |
55b307da | 1065 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
1066 | |
1067 | unsigned long timeout; | |
1068 | unsigned long flags; | |
037ad48b JS |
1069 | |
1070 | if (tty->index == MXSER_PORTS) | |
1071 | return; | |
1072 | if (!info) | |
1073 | return; | |
1074 | ||
1075 | spin_lock_irqsave(&info->slock, flags); | |
1076 | ||
1077 | if (tty_hung_up_p(filp)) { | |
1078 | spin_unlock_irqrestore(&info->slock, flags); | |
1079 | return; | |
1080 | } | |
1081 | if ((tty->count == 1) && (info->count != 1)) { | |
1082 | /* | |
1083 | * Uh, oh. tty->count is 1, which means that the tty | |
1084 | * structure will be freed. Info->count should always | |
1085 | * be one in these conditions. If it's greater than | |
1086 | * one, we've got real problems, since it means the | |
1087 | * serial port won't be shutdown. | |
1088 | */ | |
1089 | printk(KERN_ERR "mxser_close: bad serial port count; " | |
1090 | "tty->count is 1, info->count is %d\n", info->count); | |
1091 | info->count = 1; | |
1092 | } | |
1093 | if (--info->count < 0) { | |
1094 | printk(KERN_ERR "mxser_close: bad serial port count for " | |
55b307da | 1095 | "ttys%d: %d\n", tty->index, info->count); |
037ad48b JS |
1096 | info->count = 0; |
1097 | } | |
1098 | if (info->count) { | |
1099 | spin_unlock_irqrestore(&info->slock, flags); | |
1100 | return; | |
1101 | } | |
1102 | info->flags |= ASYNC_CLOSING; | |
1103 | spin_unlock_irqrestore(&info->slock, flags); | |
1104 | /* | |
1105 | * Save the termios structure, since this port may have | |
1106 | * separate termios for callout and dialin. | |
1107 | */ | |
1108 | if (info->flags & ASYNC_NORMAL_ACTIVE) | |
1109 | info->normal_termios = *tty->termios; | |
1110 | /* | |
1111 | * Now we wait for the transmit buffer to clear; and we notify | |
1112 | * the line discipline to only process XON/XOFF characters. | |
1113 | */ | |
1114 | tty->closing = 1; | |
1115 | if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) | |
1116 | tty_wait_until_sent(tty, info->closing_wait); | |
1117 | /* | |
1118 | * At this point we stop accepting input. To do this, we | |
1119 | * disable the receive line status interrupts, and tell the | |
1120 | * interrupt driver to stop checking the data ready bit in the | |
1121 | * line status register. | |
1122 | */ | |
1123 | info->IER &= ~UART_IER_RLSI; | |
55b307da | 1124 | if (info->board->chip_flag) |
037ad48b JS |
1125 | info->IER &= ~MOXA_MUST_RECV_ISR; |
1126 | /* by William | |
1127 | info->read_status_mask &= ~UART_LSR_DR; | |
1128 | */ | |
1129 | if (info->flags & ASYNC_INITIALIZED) { | |
55b307da | 1130 | outb(info->IER, info->ioaddr + UART_IER); |
037ad48b JS |
1131 | /* |
1132 | * Before we drop DTR, make sure the UART transmitter | |
1133 | * has completely drained; this is especially | |
1134 | * important if there is a transmit FIFO! | |
1135 | */ | |
1136 | timeout = jiffies + HZ; | |
55b307da | 1137 | while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) { |
037ad48b JS |
1138 | schedule_timeout_interruptible(5); |
1139 | if (time_after(jiffies, timeout)) | |
1140 | break; | |
1141 | } | |
1142 | } | |
1143 | mxser_shutdown(info); | |
1144 | ||
1145 | if (tty->driver->flush_buffer) | |
1146 | tty->driver->flush_buffer(tty); | |
1147 | ||
7e8bcf9a | 1148 | tty_ldisc_flush(tty); |
037ad48b JS |
1149 | |
1150 | tty->closing = 0; | |
1151 | info->event = 0; | |
1152 | info->tty = NULL; | |
1153 | if (info->blocked_open) { | |
1154 | if (info->close_delay) | |
1155 | schedule_timeout_interruptible(info->close_delay); | |
1156 | wake_up_interruptible(&info->open_wait); | |
1157 | } | |
1158 | ||
1159 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); | |
1160 | wake_up_interruptible(&info->close_wait); | |
1161 | ||
1162 | } | |
1163 | ||
1164 | static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1165 | { | |
1166 | int c, total = 0; | |
55b307da | 1167 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
1168 | unsigned long flags; |
1169 | ||
1170 | if (!info->xmit_buf) | |
1171 | return 0; | |
1172 | ||
1173 | while (1) { | |
1174 | c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, | |
1175 | SERIAL_XMIT_SIZE - info->xmit_head)); | |
1176 | if (c <= 0) | |
1177 | break; | |
1178 | ||
1179 | memcpy(info->xmit_buf + info->xmit_head, buf, c); | |
1180 | spin_lock_irqsave(&info->slock, flags); | |
1181 | info->xmit_head = (info->xmit_head + c) & | |
1182 | (SERIAL_XMIT_SIZE - 1); | |
1183 | info->xmit_cnt += c; | |
1184 | spin_unlock_irqrestore(&info->slock, flags); | |
1185 | ||
1186 | buf += c; | |
1187 | count -= c; | |
1188 | total += c; | |
1189 | } | |
1190 | ||
3306ce3d JS |
1191 | if (info->xmit_cnt && !tty->stopped |
1192 | /*&& !(info->IER & UART_IER_THRI)*/) { | |
037ad48b JS |
1193 | if (!tty->hw_stopped || |
1194 | (info->type == PORT_16550A) || | |
55b307da | 1195 | (info->board->chip_flag)) { |
037ad48b | 1196 | spin_lock_irqsave(&info->slock, flags); |
55b307da JS |
1197 | outb(info->IER & ~UART_IER_THRI, info->ioaddr + |
1198 | UART_IER); | |
037ad48b | 1199 | info->IER |= UART_IER_THRI; |
55b307da | 1200 | outb(info->IER, info->ioaddr + UART_IER); |
037ad48b JS |
1201 | spin_unlock_irqrestore(&info->slock, flags); |
1202 | } | |
1203 | } | |
1204 | return total; | |
1205 | } | |
1206 | ||
1207 | static void mxser_put_char(struct tty_struct *tty, unsigned char ch) | |
1208 | { | |
55b307da | 1209 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
1210 | unsigned long flags; |
1211 | ||
1212 | if (!info->xmit_buf) | |
1213 | return; | |
1214 | ||
1215 | if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) | |
1216 | return; | |
1217 | ||
1218 | spin_lock_irqsave(&info->slock, flags); | |
1219 | info->xmit_buf[info->xmit_head++] = ch; | |
1220 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; | |
1221 | info->xmit_cnt++; | |
1222 | spin_unlock_irqrestore(&info->slock, flags); | |
3306ce3d | 1223 | if (!tty->stopped /*&& !(info->IER & UART_IER_THRI)*/) { |
037ad48b JS |
1224 | if (!tty->hw_stopped || |
1225 | (info->type == PORT_16550A) || | |
55b307da | 1226 | info->board->chip_flag) { |
037ad48b | 1227 | spin_lock_irqsave(&info->slock, flags); |
55b307da | 1228 | outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); |
037ad48b | 1229 | info->IER |= UART_IER_THRI; |
55b307da | 1230 | outb(info->IER, info->ioaddr + UART_IER); |
037ad48b JS |
1231 | spin_unlock_irqrestore(&info->slock, flags); |
1232 | } | |
1233 | } | |
1234 | } | |
1235 | ||
1236 | ||
1237 | static void mxser_flush_chars(struct tty_struct *tty) | |
1238 | { | |
55b307da | 1239 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
1240 | unsigned long flags; |
1241 | ||
1242 | if (info->xmit_cnt <= 0 || | |
1243 | tty->stopped || | |
1244 | !info->xmit_buf || | |
1245 | (tty->hw_stopped && | |
1246 | (info->type != PORT_16550A) && | |
55b307da | 1247 | (!info->board->chip_flag) |
037ad48b JS |
1248 | )) |
1249 | return; | |
1250 | ||
1251 | spin_lock_irqsave(&info->slock, flags); | |
1252 | ||
55b307da | 1253 | outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); |
037ad48b | 1254 | info->IER |= UART_IER_THRI; |
55b307da | 1255 | outb(info->IER, info->ioaddr + UART_IER); |
037ad48b JS |
1256 | |
1257 | spin_unlock_irqrestore(&info->slock, flags); | |
1258 | } | |
1259 | ||
1260 | static int mxser_write_room(struct tty_struct *tty) | |
1261 | { | |
55b307da | 1262 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
1263 | int ret; |
1264 | ||
1265 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1266 | if (ret < 0) | |
1267 | ret = 0; | |
1268 | return ret; | |
1269 | } | |
1270 | ||
1271 | static int mxser_chars_in_buffer(struct tty_struct *tty) | |
1272 | { | |
55b307da | 1273 | struct mxser_port *info = tty->driver_data; |
3306ce3d JS |
1274 | int len = info->xmit_cnt; |
1275 | ||
55b307da | 1276 | if (!(inb(info->ioaddr + UART_LSR) & UART_LSR_THRE)) |
3306ce3d JS |
1277 | len++; |
1278 | ||
1279 | return len; | |
037ad48b JS |
1280 | } |
1281 | ||
1282 | static void mxser_flush_buffer(struct tty_struct *tty) | |
1283 | { | |
55b307da | 1284 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
1285 | char fcr; |
1286 | unsigned long flags; | |
1287 | ||
1288 | ||
1289 | spin_lock_irqsave(&info->slock, flags); | |
1290 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1291 | ||
1292 | /* below added by shinhay */ | |
55b307da | 1293 | fcr = inb(info->ioaddr + UART_FCR); |
037ad48b | 1294 | outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), |
55b307da JS |
1295 | info->ioaddr + UART_FCR); |
1296 | outb(fcr, info->ioaddr + UART_FCR); | |
037ad48b JS |
1297 | |
1298 | spin_unlock_irqrestore(&info->slock, flags); | |
1299 | /* above added by shinhay */ | |
1300 | ||
7e8bcf9a | 1301 | tty_wakeup(tty); |
037ad48b JS |
1302 | } |
1303 | ||
a8dea4ec JS |
1304 | /* |
1305 | * ------------------------------------------------------------ | |
1306 | * friends of mxser_ioctl() | |
1307 | * ------------------------------------------------------------ | |
1308 | */ | |
1309 | static int mxser_get_serial_info(struct mxser_port *info, | |
1310 | struct serial_struct __user *retinfo) | |
037ad48b | 1311 | { |
a8dea4ec | 1312 | struct serial_struct tmp; |
037ad48b | 1313 | |
a8dea4ec JS |
1314 | if (!retinfo) |
1315 | return -EFAULT; | |
1316 | memset(&tmp, 0, sizeof(tmp)); | |
1317 | tmp.type = info->type; | |
1318 | tmp.line = info->tty->index; | |
1319 | tmp.port = info->ioaddr; | |
1320 | tmp.irq = info->board->irq; | |
1321 | tmp.flags = info->flags; | |
1322 | tmp.baud_base = info->baud_base; | |
1323 | tmp.close_delay = info->close_delay; | |
1324 | tmp.closing_wait = info->closing_wait; | |
1325 | tmp.custom_divisor = info->custom_divisor; | |
1326 | tmp.hub6 = 0; | |
1327 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1328 | return -EFAULT; | |
1329 | return 0; | |
1330 | } | |
037ad48b | 1331 | |
a8dea4ec JS |
1332 | static int mxser_set_serial_info(struct mxser_port *info, |
1333 | struct serial_struct __user *new_info) | |
1334 | { | |
1335 | struct serial_struct new_serial; | |
1336 | unsigned int flags; | |
1337 | int retval = 0; | |
037ad48b | 1338 | |
a8dea4ec JS |
1339 | if (!new_info || !info->ioaddr) |
1340 | return -EFAULT; | |
1341 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
1342 | return -EFAULT; | |
037ad48b | 1343 | |
a8dea4ec JS |
1344 | if ((new_serial.irq != info->board->irq) || |
1345 | (new_serial.port != info->ioaddr) || | |
1346 | (new_serial.custom_divisor != info->custom_divisor) || | |
1347 | (new_serial.baud_base != info->baud_base)) | |
1348 | return -EPERM; | |
037ad48b | 1349 | |
a8dea4ec JS |
1350 | flags = info->flags & ASYNC_SPD_MASK; |
1351 | ||
1352 | if (!capable(CAP_SYS_ADMIN)) { | |
1353 | if ((new_serial.baud_base != info->baud_base) || | |
1354 | (new_serial.close_delay != info->close_delay) || | |
1355 | ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK))) | |
1356 | return -EPERM; | |
1357 | info->flags = ((info->flags & ~ASYNC_USR_MASK) | | |
1358 | (new_serial.flags & ASYNC_USR_MASK)); | |
1359 | } else { | |
037ad48b | 1360 | /* |
a8dea4ec JS |
1361 | * OK, past this point, all the error checking has been done. |
1362 | * At this point, we start making changes..... | |
037ad48b | 1363 | */ |
a8dea4ec JS |
1364 | info->flags = ((info->flags & ~ASYNC_FLAGS) | |
1365 | (new_serial.flags & ASYNC_FLAGS)); | |
1366 | info->close_delay = new_serial.close_delay * HZ / 100; | |
1367 | info->closing_wait = new_serial.closing_wait * HZ / 100; | |
1368 | info->tty->low_latency = | |
1369 | (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
1370 | info->tty->low_latency = 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */ | |
1371 | } | |
037ad48b | 1372 | |
a8dea4ec JS |
1373 | /* added by casper, 3/17/2000, for mouse */ |
1374 | info->type = new_serial.type; | |
037ad48b | 1375 | |
a8dea4ec JS |
1376 | process_txrx_fifo(info); |
1377 | ||
1378 | if (info->flags & ASYNC_INITIALIZED) { | |
1379 | if (flags != (info->flags & ASYNC_SPD_MASK)) | |
1380 | mxser_change_speed(info, NULL); | |
1381 | } else | |
1382 | retval = mxser_startup(info); | |
1383 | ||
1384 | return retval; | |
1385 | } | |
037ad48b | 1386 | |
a8dea4ec JS |
1387 | /* |
1388 | * mxser_get_lsr_info - get line status register info | |
1389 | * | |
1390 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1391 | * is emptied. On bus types like RS485, the transmitter must | |
1392 | * release the bus after transmitting. This must be done when | |
1393 | * the transmit shift register is empty, not be done when the | |
1394 | * transmit holding register is empty. This functionality | |
1395 | * allows an RS485 driver to be written in user space. | |
1396 | */ | |
1397 | static int mxser_get_lsr_info(struct mxser_port *info, | |
1398 | unsigned int __user *value) | |
1399 | { | |
1400 | unsigned char status; | |
1401 | unsigned int result; | |
1402 | unsigned long flags; | |
037ad48b | 1403 | |
a8dea4ec JS |
1404 | spin_lock_irqsave(&info->slock, flags); |
1405 | status = inb(info->ioaddr + UART_LSR); | |
1406 | spin_unlock_irqrestore(&info->slock, flags); | |
1407 | result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); | |
1408 | return put_user(result, value); | |
1409 | } | |
037ad48b | 1410 | |
a8dea4ec JS |
1411 | /* |
1412 | * This routine sends a break character out the serial port. | |
1413 | */ | |
1414 | static void mxser_send_break(struct mxser_port *info, int duration) | |
1415 | { | |
1416 | unsigned long flags; | |
037ad48b | 1417 | |
a8dea4ec JS |
1418 | if (!info->ioaddr) |
1419 | return; | |
1420 | set_current_state(TASK_INTERRUPTIBLE); | |
1421 | spin_lock_irqsave(&info->slock, flags); | |
1422 | outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC, | |
1423 | info->ioaddr + UART_LCR); | |
1424 | spin_unlock_irqrestore(&info->slock, flags); | |
1425 | schedule_timeout(duration); | |
1426 | spin_lock_irqsave(&info->slock, flags); | |
1427 | outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC, | |
1428 | info->ioaddr + UART_LCR); | |
1429 | spin_unlock_irqrestore(&info->slock, flags); | |
1430 | } | |
037ad48b | 1431 | |
a8dea4ec JS |
1432 | static int mxser_tiocmget(struct tty_struct *tty, struct file *file) |
1433 | { | |
1434 | struct mxser_port *info = tty->driver_data; | |
1435 | unsigned char control, status; | |
1436 | unsigned long flags; | |
037ad48b | 1437 | |
037ad48b | 1438 | |
a8dea4ec JS |
1439 | if (tty->index == MXSER_PORTS) |
1440 | return -ENOIOCTLCMD; | |
214efebb | 1441 | if (test_bit(TTY_IO_ERROR, &tty->flags)) |
a8dea4ec | 1442 | return -EIO; |
037ad48b | 1443 | |
a8dea4ec | 1444 | control = info->MCR; |
037ad48b | 1445 | |
a8dea4ec JS |
1446 | spin_lock_irqsave(&info->slock, flags); |
1447 | status = inb(info->ioaddr + UART_MSR); | |
1448 | if (status & UART_MSR_ANY_DELTA) | |
1449 | mxser_check_modem_status(info, status); | |
1450 | spin_unlock_irqrestore(&info->slock, flags); | |
1451 | return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) | | |
1452 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) | | |
1453 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) | | |
1454 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) | | |
1455 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) | | |
1456 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); | |
1457 | } | |
037ad48b | 1458 | |
a8dea4ec JS |
1459 | static int mxser_tiocmset(struct tty_struct *tty, struct file *file, |
1460 | unsigned int set, unsigned int clear) | |
1461 | { | |
1462 | struct mxser_port *info = tty->driver_data; | |
1463 | unsigned long flags; | |
037ad48b | 1464 | |
037ad48b | 1465 | |
a8dea4ec JS |
1466 | if (tty->index == MXSER_PORTS) |
1467 | return -ENOIOCTLCMD; | |
214efebb | 1468 | if (test_bit(TTY_IO_ERROR, &tty->flags)) |
a8dea4ec | 1469 | return -EIO; |
037ad48b | 1470 | |
a8dea4ec | 1471 | spin_lock_irqsave(&info->slock, flags); |
037ad48b | 1472 | |
a8dea4ec JS |
1473 | if (set & TIOCM_RTS) |
1474 | info->MCR |= UART_MCR_RTS; | |
1475 | if (set & TIOCM_DTR) | |
1476 | info->MCR |= UART_MCR_DTR; | |
037ad48b | 1477 | |
a8dea4ec JS |
1478 | if (clear & TIOCM_RTS) |
1479 | info->MCR &= ~UART_MCR_RTS; | |
1480 | if (clear & TIOCM_DTR) | |
1481 | info->MCR &= ~UART_MCR_DTR; | |
037ad48b | 1482 | |
a8dea4ec JS |
1483 | outb(info->MCR, info->ioaddr + UART_MCR); |
1484 | spin_unlock_irqrestore(&info->slock, flags); | |
037ad48b JS |
1485 | return 0; |
1486 | } | |
1487 | ||
a8dea4ec | 1488 | static int mxser_program_mode(int port) |
037ad48b | 1489 | { |
a8dea4ec JS |
1490 | int id, i, j, n; |
1491 | /* unsigned long flags; */ | |
037ad48b | 1492 | |
a8dea4ec JS |
1493 | spin_lock(&gm_lock); |
1494 | outb(0, port); | |
1495 | outb(0, port); | |
1496 | outb(0, port); | |
1497 | (void)inb(port); | |
1498 | (void)inb(port); | |
1499 | outb(0, port); | |
1500 | (void)inb(port); | |
1501 | /* restore_flags(flags); */ | |
1502 | spin_unlock(&gm_lock); | |
037ad48b | 1503 | |
a8dea4ec JS |
1504 | id = inb(port + 1) & 0x1F; |
1505 | if ((id != C168_ASIC_ID) && | |
1506 | (id != C104_ASIC_ID) && | |
1507 | (id != C102_ASIC_ID) && | |
1508 | (id != CI132_ASIC_ID) && | |
1509 | (id != CI134_ASIC_ID) && | |
1510 | (id != CI104J_ASIC_ID)) | |
1511 | return -1; | |
1512 | for (i = 0, j = 0; i < 4; i++) { | |
1513 | n = inb(port + 2); | |
1514 | if (n == 'M') { | |
1515 | j = 1; | |
1516 | } else if ((j == 1) && (n == 1)) { | |
1517 | j = 2; | |
1518 | break; | |
1519 | } else | |
1520 | j = 0; | |
1521 | } | |
1522 | if (j != 2) | |
1523 | id = -2; | |
1524 | return id; | |
1525 | } | |
1526 | ||
1527 | static void mxser_normal_mode(int port) | |
1528 | { | |
1529 | int i, n; | |
1530 | ||
1531 | outb(0xA5, port + 1); | |
1532 | outb(0x80, port + 3); | |
1533 | outb(12, port + 0); /* 9600 bps */ | |
1534 | outb(0, port + 1); | |
1535 | outb(0x03, port + 3); /* 8 data bits */ | |
1536 | outb(0x13, port + 4); /* loop back mode */ | |
1537 | for (i = 0; i < 16; i++) { | |
1538 | n = inb(port + 5); | |
1539 | if ((n & 0x61) == 0x60) | |
1540 | break; | |
1541 | if ((n & 1) == 1) | |
1542 | (void)inb(port); | |
1543 | } | |
1544 | outb(0x00, port + 4); | |
1545 | } | |
1546 | ||
1547 | #define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ | |
1548 | #define CHIP_DO 0x02 /* Serial Data Output in Eprom */ | |
1549 | #define CHIP_CS 0x04 /* Serial Chip Select in Eprom */ | |
1550 | #define CHIP_DI 0x08 /* Serial Data Input in Eprom */ | |
1551 | #define EN_CCMD 0x000 /* Chip's command register */ | |
1552 | #define EN0_RSARLO 0x008 /* Remote start address reg 0 */ | |
1553 | #define EN0_RSARHI 0x009 /* Remote start address reg 1 */ | |
1554 | #define EN0_RCNTLO 0x00A /* Remote byte count reg WR */ | |
1555 | #define EN0_RCNTHI 0x00B /* Remote byte count reg WR */ | |
1556 | #define EN0_DCFG 0x00E /* Data configuration reg WR */ | |
1557 | #define EN0_PORT 0x010 /* Rcv missed frame error counter RD */ | |
1558 | #define ENC_PAGE0 0x000 /* Select page 0 of chip registers */ | |
1559 | #define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */ | |
1560 | static int mxser_read_register(int port, unsigned short *regs) | |
1561 | { | |
1562 | int i, k, value, id; | |
1563 | unsigned int j; | |
1564 | ||
1565 | id = mxser_program_mode(port); | |
1566 | if (id < 0) | |
1567 | return id; | |
1568 | for (i = 0; i < 14; i++) { | |
1569 | k = (i & 0x3F) | 0x180; | |
1570 | for (j = 0x100; j > 0; j >>= 1) { | |
1571 | outb(CHIP_CS, port); | |
1572 | if (k & j) { | |
1573 | outb(CHIP_CS | CHIP_DO, port); | |
1574 | outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ | |
1575 | } else { | |
1576 | outb(CHIP_CS, port); | |
1577 | outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ | |
1578 | } | |
1579 | } | |
1580 | (void)inb(port); | |
1581 | value = 0; | |
1582 | for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { | |
1583 | outb(CHIP_CS, port); | |
1584 | outb(CHIP_CS | CHIP_SK, port); | |
1585 | if (inb(port) & CHIP_DI) | |
1586 | value |= j; | |
1587 | } | |
1588 | regs[i] = value; | |
1589 | outb(0, port); | |
1590 | } | |
1591 | mxser_normal_mode(port); | |
1592 | return id; | |
1593 | } | |
1594 | ||
a8dea4ec JS |
1595 | static int mxser_ioctl_special(unsigned int cmd, void __user *argp) |
1596 | { | |
1597 | struct mxser_port *port; | |
1598 | int result, status; | |
1599 | unsigned int i, j; | |
1600 | ||
1601 | switch (cmd) { | |
1602 | case MOXA_GET_CONF: | |
1603 | /* if (copy_to_user(argp, mxsercfg, | |
1604 | sizeof(struct mxser_hwconf) * 4)) | |
1605 | return -EFAULT; | |
1606 | return 0;*/ | |
1607 | return -ENXIO; | |
1608 | case MOXA_GET_MAJOR: | |
1609 | if (copy_to_user(argp, &ttymajor, sizeof(int))) | |
1610 | return -EFAULT; | |
1611 | return 0; | |
1612 | ||
1613 | case MOXA_GET_CUMAJOR: | |
1614 | if (copy_to_user(argp, &calloutmajor, sizeof(int))) | |
037ad48b JS |
1615 | return -EFAULT; |
1616 | return 0; | |
1617 | ||
1618 | case MOXA_CHKPORTENABLE: | |
1619 | result = 0; | |
55b307da JS |
1620 | |
1621 | for (i = 0; i < MXSER_BOARDS; i++) | |
1622 | for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) | |
1623 | if (mxser_boards[i].ports[j].ioaddr) | |
1624 | result |= (1 << i); | |
1625 | ||
037ad48b JS |
1626 | return put_user(result, (unsigned long __user *)argp); |
1627 | case MOXA_GETDATACOUNT: | |
1628 | if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log))) | |
1629 | return -EFAULT; | |
1630 | return 0; | |
1631 | case MOXA_GETMSTATUS: | |
55b307da JS |
1632 | for (i = 0; i < MXSER_BOARDS; i++) |
1633 | for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) { | |
1634 | port = &mxser_boards[i].ports[j]; | |
1635 | ||
1636 | GMStatus[i].ri = 0; | |
1637 | if (!port->ioaddr) { | |
1638 | GMStatus[i].dcd = 0; | |
1639 | GMStatus[i].dsr = 0; | |
1640 | GMStatus[i].cts = 0; | |
1641 | continue; | |
1642 | } | |
037ad48b | 1643 | |
55b307da JS |
1644 | if (!port->tty || !port->tty->termios) |
1645 | GMStatus[i].cflag = | |
1646 | port->normal_termios.c_cflag; | |
1647 | else | |
1648 | GMStatus[i].cflag = | |
1649 | port->tty->termios->c_cflag; | |
037ad48b | 1650 | |
55b307da JS |
1651 | status = inb(port->ioaddr + UART_MSR); |
1652 | if (status & 0x80 /*UART_MSR_DCD */ ) | |
1653 | GMStatus[i].dcd = 1; | |
1654 | else | |
1655 | GMStatus[i].dcd = 0; | |
037ad48b | 1656 | |
55b307da JS |
1657 | if (status & 0x20 /*UART_MSR_DSR */ ) |
1658 | GMStatus[i].dsr = 1; | |
1659 | else | |
1660 | GMStatus[i].dsr = 0; | |
037ad48b JS |
1661 | |
1662 | ||
55b307da JS |
1663 | if (status & 0x10 /*UART_MSR_CTS */ ) |
1664 | GMStatus[i].cts = 1; | |
1665 | else | |
1666 | GMStatus[i].cts = 0; | |
1667 | } | |
037ad48b JS |
1668 | if (copy_to_user(argp, GMStatus, |
1669 | sizeof(struct mxser_mstatus) * MXSER_PORTS)) | |
1670 | return -EFAULT; | |
1671 | return 0; | |
1672 | case MOXA_ASPP_MON_EXT: { | |
55b307da JS |
1673 | int status, p, shiftbit; |
1674 | unsigned long opmode; | |
1675 | unsigned cflag, iflag; | |
037ad48b | 1676 | |
55b307da JS |
1677 | for (i = 0; i < MXSER_BOARDS; i++) |
1678 | for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) { | |
1679 | port = &mxser_boards[i].ports[j]; | |
1680 | if (!port->ioaddr) | |
037ad48b JS |
1681 | continue; |
1682 | ||
55b307da JS |
1683 | status = mxser_get_msr(port->ioaddr, 0, i); |
1684 | /* mxser_check_modem_status(port, status); */ | |
1685 | ||
037ad48b | 1686 | if (status & UART_MSR_TERI) |
55b307da | 1687 | port->icount.rng++; |
037ad48b | 1688 | if (status & UART_MSR_DDSR) |
55b307da | 1689 | port->icount.dsr++; |
037ad48b | 1690 | if (status & UART_MSR_DDCD) |
55b307da | 1691 | port->icount.dcd++; |
037ad48b | 1692 | if (status & UART_MSR_DCTS) |
55b307da JS |
1693 | port->icount.cts++; |
1694 | ||
1695 | port->mon_data.modem_status = status; | |
1696 | mon_data_ext.rx_cnt[i] = port->mon_data.rxcnt; | |
1697 | mon_data_ext.tx_cnt[i] = port->mon_data.txcnt; | |
1698 | mon_data_ext.up_rxcnt[i] = | |
1699 | port->mon_data.up_rxcnt; | |
1700 | mon_data_ext.up_txcnt[i] = | |
1701 | port->mon_data.up_txcnt; | |
1702 | mon_data_ext.modem_status[i] = | |
1703 | port->mon_data.modem_status; | |
1704 | mon_data_ext.baudrate[i] = port->realbaud; | |
1705 | ||
1706 | if (!port->tty || !port->tty->termios) { | |
1707 | cflag = port->normal_termios.c_cflag; | |
1708 | iflag = port->normal_termios.c_iflag; | |
037ad48b | 1709 | } else { |
55b307da JS |
1710 | cflag = port->tty->termios->c_cflag; |
1711 | iflag = port->tty->termios->c_iflag; | |
037ad48b JS |
1712 | } |
1713 | ||
1714 | mon_data_ext.databits[i] = cflag & CSIZE; | |
1715 | ||
1716 | mon_data_ext.stopbits[i] = cflag & CSTOPB; | |
1717 | ||
55b307da JS |
1718 | mon_data_ext.parity[i] = |
1719 | cflag & (PARENB | PARODD | CMSPAR); | |
037ad48b JS |
1720 | |
1721 | mon_data_ext.flowctrl[i] = 0x00; | |
1722 | ||
1723 | if (cflag & CRTSCTS) | |
1724 | mon_data_ext.flowctrl[i] |= 0x03; | |
1725 | ||
1726 | if (iflag & (IXON | IXOFF)) | |
1727 | mon_data_ext.flowctrl[i] |= 0x0C; | |
1728 | ||
55b307da | 1729 | if (port->type == PORT_16550A) |
037ad48b JS |
1730 | mon_data_ext.fifo[i] = 1; |
1731 | else | |
1732 | mon_data_ext.fifo[i] = 0; | |
1733 | ||
1734 | p = i % 4; | |
1735 | shiftbit = p * 2; | |
55b307da | 1736 | opmode = inb(port->opmode_ioaddr) >> shiftbit; |
037ad48b JS |
1737 | opmode &= OP_MODE_MASK; |
1738 | ||
1739 | mon_data_ext.iftype[i] = opmode; | |
1740 | ||
1741 | } | |
55b307da JS |
1742 | if (copy_to_user(argp, &mon_data_ext, |
1743 | sizeof(mon_data_ext))) | |
037ad48b JS |
1744 | return -EFAULT; |
1745 | ||
1746 | return 0; | |
1747 | ||
55b307da | 1748 | } default: |
037ad48b JS |
1749 | return -ENOIOCTLCMD; |
1750 | } | |
1751 | return 0; | |
1752 | } | |
1753 | ||
a8dea4ec JS |
1754 | static int mxser_ioctl(struct tty_struct *tty, struct file *file, |
1755 | unsigned int cmd, unsigned long arg) | |
037ad48b | 1756 | { |
55b307da | 1757 | struct mxser_port *info = tty->driver_data; |
a8dea4ec JS |
1758 | struct async_icount cprev, cnow; /* kernel counter temps */ |
1759 | struct serial_icounter_struct __user *p_cuser; | |
1760 | unsigned long templ; | |
1761 | unsigned long flags; | |
1762 | void __user *argp = (void __user *)arg; | |
1763 | int retval; | |
037ad48b | 1764 | |
a8dea4ec JS |
1765 | if (tty->index == MXSER_PORTS) |
1766 | return mxser_ioctl_special(cmd, argp); | |
1767 | ||
1768 | /* following add by Victor Yu. 01-05-2004 */ | |
1769 | if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { | |
1770 | int p; | |
1771 | unsigned long opmode; | |
1772 | static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f }; | |
1773 | int shiftbit; | |
1774 | unsigned char val, mask; | |
1775 | ||
1776 | p = tty->index % 4; | |
1777 | if (cmd == MOXA_SET_OP_MODE) { | |
1778 | if (get_user(opmode, (int __user *) argp)) | |
1779 | return -EFAULT; | |
1780 | if (opmode != RS232_MODE && | |
1781 | opmode != RS485_2WIRE_MODE && | |
1782 | opmode != RS422_MODE && | |
1783 | opmode != RS485_4WIRE_MODE) | |
1784 | return -EFAULT; | |
1785 | mask = ModeMask[p]; | |
1786 | shiftbit = p * 2; | |
1787 | val = inb(info->opmode_ioaddr); | |
1788 | val &= mask; | |
1789 | val |= (opmode << shiftbit); | |
1790 | outb(val, info->opmode_ioaddr); | |
1791 | } else { | |
1792 | shiftbit = p * 2; | |
1793 | opmode = inb(info->opmode_ioaddr) >> shiftbit; | |
1794 | opmode &= OP_MODE_MASK; | |
1795 | if (copy_to_user(argp, &opmode, sizeof(int))) | |
1796 | return -EFAULT; | |
3306ce3d | 1797 | } |
a8dea4ec | 1798 | return 0; |
037ad48b | 1799 | } |
a8dea4ec | 1800 | /* above add by Victor Yu. 01-05-2004 */ |
037ad48b | 1801 | |
214efebb JS |
1802 | if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT && |
1803 | test_bit(TTY_IO_ERROR, &tty->flags)) | |
1804 | return -EIO; | |
1805 | ||
a8dea4ec JS |
1806 | switch (cmd) { |
1807 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | |
1808 | retval = tty_check_change(tty); | |
1809 | if (retval) | |
1810 | return retval; | |
1811 | tty_wait_until_sent(tty, 0); | |
1812 | if (!arg) | |
1813 | mxser_send_break(info, HZ / 4); /* 1/4 second */ | |
1814 | return 0; | |
1815 | case TCSBRKP: /* support for POSIX tcsendbreak() */ | |
1816 | retval = tty_check_change(tty); | |
1817 | if (retval) | |
1818 | return retval; | |
1819 | tty_wait_until_sent(tty, 0); | |
1820 | mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4); | |
1821 | return 0; | |
1822 | case TIOCGSOFTCAR: | |
1823 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); | |
1824 | case TIOCSSOFTCAR: | |
1825 | if (get_user(templ, (unsigned long __user *) argp)) | |
1826 | return -EFAULT; | |
1827 | arg = templ; | |
1828 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); | |
1829 | return 0; | |
1830 | case TIOCGSERIAL: | |
1831 | return mxser_get_serial_info(info, argp); | |
1832 | case TIOCSSERIAL: | |
1833 | return mxser_set_serial_info(info, argp); | |
1834 | case TIOCSERGETLSR: /* Get line status register */ | |
1835 | return mxser_get_lsr_info(info, argp); | |
1836 | /* | |
1837 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1838 | * - mask passed in arg for lines of interest | |
1839 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1840 | * Caller should use TIOCGICOUNT to see which one it was | |
1841 | */ | |
1842 | case TIOCMIWAIT: { | |
1843 | DECLARE_WAITQUEUE(wait, current); | |
1844 | int ret; | |
1845 | spin_lock_irqsave(&info->slock, flags); | |
1846 | cprev = info->icount; /* note the counters on entry */ | |
1847 | spin_unlock_irqrestore(&info->slock, flags); | |
037ad48b | 1848 | |
a8dea4ec JS |
1849 | add_wait_queue(&info->delta_msr_wait, &wait); |
1850 | while (1) { | |
1851 | spin_lock_irqsave(&info->slock, flags); | |
1852 | cnow = info->icount; /* atomic copy */ | |
1853 | spin_unlock_irqrestore(&info->slock, flags); | |
037ad48b | 1854 | |
a8dea4ec JS |
1855 | set_current_state(TASK_INTERRUPTIBLE); |
1856 | if (((arg & TIOCM_RNG) && | |
1857 | (cnow.rng != cprev.rng)) || | |
1858 | ((arg & TIOCM_DSR) && | |
1859 | (cnow.dsr != cprev.dsr)) || | |
1860 | ((arg & TIOCM_CD) && | |
1861 | (cnow.dcd != cprev.dcd)) || | |
1862 | ((arg & TIOCM_CTS) && | |
1863 | (cnow.cts != cprev.cts))) { | |
1864 | ret = 0; | |
1865 | break; | |
3306ce3d | 1866 | } |
a8dea4ec JS |
1867 | /* see if a signal did it */ |
1868 | if (signal_pending(current)) { | |
1869 | ret = -ERESTARTSYS; | |
1870 | break; | |
1871 | } | |
1872 | cprev = cnow; | |
037ad48b | 1873 | } |
a8dea4ec JS |
1874 | current->state = TASK_RUNNING; |
1875 | remove_wait_queue(&info->delta_msr_wait, &wait); | |
1876 | break; | |
037ad48b | 1877 | } |
a8dea4ec JS |
1878 | /* NOTREACHED */ |
1879 | /* | |
1880 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
1881 | * Return: write counters to the user passed counter struct | |
1882 | * NB: both 1->0 and 0->1 transitions are counted except for | |
1883 | * RI where only 0->1 is counted. | |
1884 | */ | |
1885 | case TIOCGICOUNT: | |
1886 | spin_lock_irqsave(&info->slock, flags); | |
1887 | cnow = info->icount; | |
1888 | spin_unlock_irqrestore(&info->slock, flags); | |
1889 | p_cuser = argp; | |
1890 | /* modified by casper 1/11/2000 */ | |
1891 | if (put_user(cnow.frame, &p_cuser->frame)) | |
1892 | return -EFAULT; | |
1893 | if (put_user(cnow.brk, &p_cuser->brk)) | |
1894 | return -EFAULT; | |
1895 | if (put_user(cnow.overrun, &p_cuser->overrun)) | |
1896 | return -EFAULT; | |
1897 | if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun)) | |
1898 | return -EFAULT; | |
1899 | if (put_user(cnow.parity, &p_cuser->parity)) | |
1900 | return -EFAULT; | |
1901 | if (put_user(cnow.rx, &p_cuser->rx)) | |
1902 | return -EFAULT; | |
1903 | if (put_user(cnow.tx, &p_cuser->tx)) | |
1904 | return -EFAULT; | |
1905 | put_user(cnow.cts, &p_cuser->cts); | |
1906 | put_user(cnow.dsr, &p_cuser->dsr); | |
1907 | put_user(cnow.rng, &p_cuser->rng); | |
1908 | put_user(cnow.dcd, &p_cuser->dcd); | |
1909 | return 0; | |
1910 | case MOXA_HighSpeedOn: | |
1911 | return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp); | |
1912 | case MOXA_SDS_RSTICOUNTER: | |
1913 | info->mon_data.rxcnt = 0; | |
1914 | info->mon_data.txcnt = 0; | |
1915 | return 0; | |
1916 | /* (above) added by James. */ | |
1917 | case MOXA_ASPP_SETBAUD:{ | |
1918 | long baud; | |
1919 | if (get_user(baud, (long __user *)argp)) | |
1920 | return -EFAULT; | |
1921 | mxser_set_baud(info, baud); | |
1922 | return 0; | |
1923 | } | |
1924 | case MOXA_ASPP_GETBAUD: | |
1925 | if (copy_to_user(argp, &info->realbaud, sizeof(long))) | |
1926 | return -EFAULT; | |
037ad48b | 1927 | |
a8dea4ec | 1928 | return 0; |
037ad48b | 1929 | |
a8dea4ec JS |
1930 | case MOXA_ASPP_OQUEUE:{ |
1931 | int len, lsr; | |
037ad48b | 1932 | |
a8dea4ec JS |
1933 | len = mxser_chars_in_buffer(tty); |
1934 | ||
1935 | lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT; | |
1936 | ||
1937 | len += (lsr ? 0 : 1); | |
1938 | ||
1939 | if (copy_to_user(argp, &len, sizeof(int))) | |
1940 | return -EFAULT; | |
1941 | ||
1942 | return 0; | |
037ad48b | 1943 | } |
a8dea4ec JS |
1944 | case MOXA_ASPP_MON: { |
1945 | int mcr, status; | |
037ad48b | 1946 | |
a8dea4ec JS |
1947 | /* info->mon_data.ser_param = tty->termios->c_cflag; */ |
1948 | ||
1949 | status = mxser_get_msr(info->ioaddr, 1, tty->index); | |
1950 | mxser_check_modem_status(info, status); | |
1951 | ||
1952 | mcr = inb(info->ioaddr + UART_MCR); | |
1953 | if (mcr & MOXA_MUST_MCR_XON_FLAG) | |
1954 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD; | |
1955 | else | |
1956 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD; | |
1957 | ||
1958 | if (mcr & MOXA_MUST_MCR_TX_XON) | |
1959 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT; | |
1960 | else | |
1961 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT; | |
1962 | ||
1963 | if (info->tty->hw_stopped) | |
1964 | info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; | |
1965 | else | |
1966 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; | |
1967 | ||
1968 | if (copy_to_user(argp, &info->mon_data, | |
1969 | sizeof(struct mxser_mon))) | |
1970 | return -EFAULT; | |
1971 | ||
1972 | return 0; | |
1973 | } | |
1974 | case MOXA_ASPP_LSTATUS: { | |
1975 | if (copy_to_user(argp, &info->err_shadow, | |
1976 | sizeof(unsigned char))) | |
1977 | return -EFAULT; | |
1978 | ||
1979 | info->err_shadow = 0; | |
1980 | return 0; | |
1981 | } | |
1982 | case MOXA_SET_BAUD_METHOD: { | |
1983 | int method; | |
1984 | ||
1985 | if (get_user(method, (int __user *)argp)) | |
1986 | return -EFAULT; | |
1987 | mxser_set_baud_method[tty->index] = method; | |
1988 | if (copy_to_user(argp, &method, sizeof(int))) | |
1989 | return -EFAULT; | |
1990 | ||
1991 | return 0; | |
1992 | } | |
1993 | default: | |
1994 | return -ENOIOCTLCMD; | |
1995 | } | |
1996 | return 0; | |
1997 | } | |
1998 | ||
1999 | static void mxser_stoprx(struct tty_struct *tty) | |
2000 | { | |
2001 | struct mxser_port *info = tty->driver_data; | |
037ad48b | 2002 | |
a8dea4ec JS |
2003 | info->ldisc_stop_rx = 1; |
2004 | if (I_IXOFF(tty)) { | |
037ad48b | 2005 | /* following add by Victor Yu. 09-02-2002 */ |
55b307da | 2006 | if (info->board->chip_flag) { |
a8dea4ec JS |
2007 | info->IER &= ~MOXA_MUST_RECV_ISR; |
2008 | outb(info->IER, info->ioaddr + UART_IER); | |
2009 | } else if (!(info->flags & ASYNC_CLOSING)) { | |
2010 | info->x_char = STOP_CHAR(tty); | |
2011 | outb(0, info->ioaddr + UART_IER); | |
2012 | info->IER |= UART_IER_THRI; | |
2013 | outb(info->IER, info->ioaddr + UART_IER); | |
037ad48b | 2014 | } |
a8dea4ec | 2015 | } |
037ad48b | 2016 | |
a8dea4ec JS |
2017 | if (info->tty->termios->c_cflag & CRTSCTS) { |
2018 | info->MCR &= ~UART_MCR_RTS; | |
2019 | outb(info->MCR, info->ioaddr + UART_MCR); | |
2020 | } | |
2021 | } | |
2022 | ||
2023 | /* | |
2024 | * This routine is called by the upper-layer tty layer to signal that | |
2025 | * incoming characters should be throttled. | |
2026 | */ | |
2027 | static void mxser_throttle(struct tty_struct *tty) | |
2028 | { | |
2029 | mxser_stoprx(tty); | |
2030 | } | |
2031 | ||
2032 | static void mxser_unthrottle(struct tty_struct *tty) | |
2033 | { | |
2034 | struct mxser_port *info = tty->driver_data; | |
2035 | ||
2036 | /* startrx */ | |
2037 | info->ldisc_stop_rx = 0; | |
2038 | if (I_IXOFF(tty)) { | |
2039 | if (info->x_char) | |
2040 | info->x_char = 0; | |
2041 | else { | |
2042 | /* following add by Victor Yu. 09-02-2002 */ | |
2043 | if (info->board->chip_flag) { | |
2044 | info->IER |= MOXA_MUST_RECV_ISR; | |
2045 | outb(info->IER, info->ioaddr + UART_IER); | |
2046 | } else if (!(info->flags & ASYNC_CLOSING)) { | |
2047 | info->x_char = START_CHAR(tty); | |
2048 | outb(0, info->ioaddr + UART_IER); | |
2049 | info->IER |= UART_IER_THRI; | |
2050 | outb(info->IER, info->ioaddr + UART_IER); | |
2051 | } | |
2052 | } | |
2053 | } | |
2054 | ||
2055 | if (info->tty->termios->c_cflag & CRTSCTS) { | |
2056 | info->MCR |= UART_MCR_RTS; | |
2057 | outb(info->MCR, info->ioaddr + UART_MCR); | |
037ad48b JS |
2058 | } |
2059 | } | |
2060 | ||
2061 | /* | |
2062 | * mxser_stop() and mxser_start() | |
2063 | * | |
2064 | * This routines are called before setting or resetting tty->stopped. | |
2065 | * They enable or disable transmitter interrupts, as necessary. | |
2066 | */ | |
2067 | static void mxser_stop(struct tty_struct *tty) | |
2068 | { | |
55b307da | 2069 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
2070 | unsigned long flags; |
2071 | ||
2072 | spin_lock_irqsave(&info->slock, flags); | |
2073 | if (info->IER & UART_IER_THRI) { | |
2074 | info->IER &= ~UART_IER_THRI; | |
55b307da | 2075 | outb(info->IER, info->ioaddr + UART_IER); |
037ad48b JS |
2076 | } |
2077 | spin_unlock_irqrestore(&info->slock, flags); | |
2078 | } | |
2079 | ||
2080 | static void mxser_start(struct tty_struct *tty) | |
2081 | { | |
55b307da | 2082 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
2083 | unsigned long flags; |
2084 | ||
2085 | spin_lock_irqsave(&info->slock, flags); | |
3306ce3d JS |
2086 | if (info->xmit_cnt && info->xmit_buf |
2087 | /* && !(info->IER & UART_IER_THRI) */) { | |
55b307da | 2088 | outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); |
037ad48b | 2089 | info->IER |= UART_IER_THRI; |
55b307da | 2090 | outb(info->IER, info->ioaddr + UART_IER); |
037ad48b JS |
2091 | } |
2092 | spin_unlock_irqrestore(&info->slock, flags); | |
2093 | } | |
2094 | ||
a8dea4ec JS |
2095 | static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios) |
2096 | { | |
2097 | struct mxser_port *info = tty->driver_data; | |
2098 | unsigned long flags; | |
2099 | ||
2100 | if ((tty->termios->c_cflag != old_termios->c_cflag) || | |
2101 | (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) { | |
2102 | ||
2103 | mxser_change_speed(info, old_termios); | |
2104 | ||
2105 | if ((old_termios->c_cflag & CRTSCTS) && | |
2106 | !(tty->termios->c_cflag & CRTSCTS)) { | |
2107 | tty->hw_stopped = 0; | |
2108 | mxser_start(tty); | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | /* Handle sw stopped */ | |
2113 | if ((old_termios->c_iflag & IXON) && | |
2114 | !(tty->termios->c_iflag & IXON)) { | |
2115 | tty->stopped = 0; | |
2116 | ||
2117 | /* following add by Victor Yu. 09-02-2002 */ | |
2118 | if (info->board->chip_flag) { | |
2119 | spin_lock_irqsave(&info->slock, flags); | |
2120 | DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->ioaddr); | |
2121 | spin_unlock_irqrestore(&info->slock, flags); | |
2122 | } | |
2123 | /* above add by Victor Yu. 09-02-2002 */ | |
2124 | ||
2125 | mxser_start(tty); | |
2126 | } | |
2127 | } | |
2128 | ||
037ad48b JS |
2129 | /* |
2130 | * mxser_wait_until_sent() --- wait until the transmitter is empty | |
2131 | */ | |
2132 | static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) | |
2133 | { | |
55b307da | 2134 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
2135 | unsigned long orig_jiffies, char_time; |
2136 | int lsr; | |
2137 | ||
2138 | if (info->type == PORT_UNKNOWN) | |
2139 | return; | |
2140 | ||
2141 | if (info->xmit_fifo_size == 0) | |
2142 | return; /* Just in case.... */ | |
2143 | ||
2144 | orig_jiffies = jiffies; | |
2145 | /* | |
2146 | * Set the check interval to be 1/5 of the estimated time to | |
2147 | * send a single character, and make it at least 1. The check | |
2148 | * interval should also be less than the timeout. | |
2149 | * | |
2150 | * Note: we have to use pretty tight timings here to satisfy | |
2151 | * the NIST-PCTS. | |
2152 | */ | |
2153 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
2154 | char_time = char_time / 5; | |
2155 | if (char_time == 0) | |
2156 | char_time = 1; | |
2157 | if (timeout && timeout < char_time) | |
2158 | char_time = timeout; | |
2159 | /* | |
2160 | * If the transmitter hasn't cleared in twice the approximate | |
2161 | * amount of time to send the entire FIFO, it probably won't | |
2162 | * ever clear. This assumes the UART isn't doing flow | |
2163 | * control, which is currently the case. Hence, if it ever | |
2164 | * takes longer than info->timeout, this is probably due to a | |
2165 | * UART bug of some kind. So, we clamp the timeout parameter at | |
2166 | * 2*info->timeout. | |
2167 | */ | |
2168 | if (!timeout || timeout > 2 * info->timeout) | |
2169 | timeout = 2 * info->timeout; | |
2170 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | |
2171 | printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...", | |
2172 | timeout, char_time); | |
2173 | printk("jiff=%lu...", jiffies); | |
2174 | #endif | |
55b307da | 2175 | while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) { |
037ad48b JS |
2176 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT |
2177 | printk("lsr = %d (jiff=%lu)...", lsr, jiffies); | |
2178 | #endif | |
2179 | schedule_timeout_interruptible(char_time); | |
2180 | if (signal_pending(current)) | |
2181 | break; | |
2182 | if (timeout && time_after(jiffies, orig_jiffies + timeout)) | |
2183 | break; | |
2184 | } | |
2185 | set_current_state(TASK_RUNNING); | |
2186 | ||
2187 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | |
2188 | printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); | |
a8dea4ec JS |
2189 | #endif |
2190 | } | |
037ad48b JS |
2191 | |
2192 | ||
a8dea4ec JS |
2193 | /* |
2194 | * This routine is called by tty_hangup() when a hangup is signaled. | |
2195 | */ | |
2196 | void mxser_hangup(struct tty_struct *tty) | |
2197 | { | |
2198 | struct mxser_port *info = tty->driver_data; | |
037ad48b | 2199 | |
a8dea4ec JS |
2200 | mxser_flush_buffer(tty); |
2201 | mxser_shutdown(info); | |
2202 | info->event = 0; | |
2203 | info->count = 0; | |
2204 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
2205 | info->tty = NULL; | |
2206 | wake_up_interruptible(&info->open_wait); | |
037ad48b JS |
2207 | } |
2208 | ||
2209 | ||
a8dea4ec JS |
2210 | /* added by James 03-12-2004. */ |
2211 | /* | |
2212 | * mxser_rs_break() --- routine which turns the break handling on or off | |
2213 | */ | |
2214 | static void mxser_rs_break(struct tty_struct *tty, int break_state) | |
037ad48b | 2215 | { |
a8dea4ec | 2216 | struct mxser_port *info = tty->driver_data; |
037ad48b JS |
2217 | unsigned long flags; |
2218 | ||
a8dea4ec JS |
2219 | spin_lock_irqsave(&info->slock, flags); |
2220 | if (break_state == -1) | |
2221 | outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC, | |
2222 | info->ioaddr + UART_LCR); | |
2223 | else | |
2224 | outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC, | |
2225 | info->ioaddr + UART_LCR); | |
2226 | spin_unlock_irqrestore(&info->slock, flags); | |
2227 | } | |
037ad48b | 2228 | |
a8dea4ec | 2229 | /* (above) added by James. */ |
037ad48b | 2230 | |
a8dea4ec JS |
2231 | static void mxser_receive_chars(struct mxser_port *port, int *status) |
2232 | { | |
2233 | struct tty_struct *tty = port->tty; | |
2234 | unsigned char ch, gdl; | |
2235 | int ignored = 0; | |
2236 | int cnt = 0; | |
2237 | int recv_room; | |
2238 | int max = 256; | |
2239 | unsigned long flags; | |
037ad48b | 2240 | |
a8dea4ec JS |
2241 | spin_lock_irqsave(&port->slock, flags); |
2242 | ||
2243 | recv_room = tty->receive_room; | |
2244 | if ((recv_room == 0) && (!port->ldisc_stop_rx)) { | |
2245 | /* mxser_throttle(tty); */ | |
2246 | mxser_stoprx(tty); | |
2247 | /* return; */ | |
037ad48b JS |
2248 | } |
2249 | ||
a8dea4ec JS |
2250 | /* following add by Victor Yu. 09-02-2002 */ |
2251 | if (port->board->chip_flag != MOXA_OTHER_UART) { | |
037ad48b | 2252 | |
a8dea4ec JS |
2253 | if (*status & UART_LSR_SPECIAL) |
2254 | goto intr_old; | |
2255 | /* following add by Victor Yu. 02-11-2004 */ | |
2256 | if (port->board->chip_flag == MOXA_MUST_MU860_HWID && | |
2257 | (*status & MOXA_MUST_LSR_RERR)) | |
2258 | goto intr_old; | |
2259 | /* above add by Victor Yu. 02-14-2004 */ | |
2260 | if (*status & MOXA_MUST_LSR_RERR) | |
2261 | goto intr_old; | |
2262 | ||
2263 | gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER); | |
2264 | ||
2265 | /* add by Victor Yu. 02-11-2004 */ | |
2266 | if (port->board->chip_flag == MOXA_MUST_MU150_HWID) | |
2267 | gdl &= MOXA_MUST_GDL_MASK; | |
2268 | if (gdl >= recv_room) { | |
2269 | if (!port->ldisc_stop_rx) { | |
2270 | /* mxser_throttle(tty); */ | |
2271 | mxser_stoprx(tty); | |
2272 | } | |
2273 | /* return; */ | |
2274 | } | |
2275 | while (gdl--) { | |
2276 | ch = inb(port->ioaddr + UART_RX); | |
2277 | tty_insert_flip_char(tty, ch, 0); | |
2278 | cnt++; | |
2279 | } | |
2280 | goto end_intr; | |
037ad48b | 2281 | } |
a8dea4ec JS |
2282 | intr_old: |
2283 | /* above add by Victor Yu. 09-02-2002 */ | |
037ad48b | 2284 | |
a8dea4ec JS |
2285 | do { |
2286 | if (max-- < 0) | |
2287 | break; | |
037ad48b | 2288 | |
a8dea4ec JS |
2289 | ch = inb(port->ioaddr + UART_RX); |
2290 | /* following add by Victor Yu. 09-02-2002 */ | |
2291 | if (port->board->chip_flag && (*status & UART_LSR_OE) | |
2292 | /*&& !(*status&UART_LSR_DR) */) | |
2293 | outb(0x23, port->ioaddr + UART_FCR); | |
2294 | *status &= port->read_status_mask; | |
2295 | /* above add by Victor Yu. 09-02-2002 */ | |
2296 | if (*status & port->ignore_status_mask) { | |
2297 | if (++ignored > 100) | |
2298 | break; | |
2299 | } else { | |
2300 | char flag = 0; | |
2301 | if (*status & UART_LSR_SPECIAL) { | |
2302 | if (*status & UART_LSR_BI) { | |
2303 | flag = TTY_BREAK; | |
2304 | /* added by casper 1/11/2000 */ | |
2305 | port->icount.brk++; | |
037ad48b | 2306 | |
a8dea4ec JS |
2307 | if (port->flags & ASYNC_SAK) |
2308 | do_SAK(tty); | |
2309 | } else if (*status & UART_LSR_PE) { | |
2310 | flag = TTY_PARITY; | |
2311 | /* added by casper 1/11/2000 */ | |
2312 | port->icount.parity++; | |
2313 | } else if (*status & UART_LSR_FE) { | |
2314 | flag = TTY_FRAME; | |
2315 | /* added by casper 1/11/2000 */ | |
2316 | port->icount.frame++; | |
2317 | } else if (*status & UART_LSR_OE) { | |
2318 | flag = TTY_OVERRUN; | |
2319 | /* added by casper 1/11/2000 */ | |
2320 | port->icount.overrun++; | |
2321 | } else | |
2322 | flags = TTY_BREAK; | |
2323 | } else | |
2324 | flags = 0; | |
2325 | tty_insert_flip_char(tty, ch, flag); | |
2326 | cnt++; | |
2327 | if (cnt >= recv_room) { | |
2328 | if (!port->ldisc_stop_rx) { | |
2329 | /* mxser_throttle(tty); */ | |
2330 | mxser_stoprx(tty); | |
2331 | } | |
2332 | break; | |
2333 | } | |
037ad48b | 2334 | |
a8dea4ec | 2335 | } |
037ad48b | 2336 | |
a8dea4ec JS |
2337 | /* following add by Victor Yu. 09-02-2002 */ |
2338 | if (port->board->chip_flag) | |
2339 | break; | |
037ad48b | 2340 | |
a8dea4ec JS |
2341 | /* mask by Victor Yu. 09-02-2002 |
2342 | *status = inb(port->ioaddr + UART_LSR) & port->read_status_mask; | |
2343 | */ | |
2344 | /* following add by Victor Yu. 09-02-2002 */ | |
2345 | *status = inb(port->ioaddr + UART_LSR); | |
2346 | /* above add by Victor Yu. 09-02-2002 */ | |
2347 | } while (*status & UART_LSR_DR); | |
037ad48b | 2348 | |
a8dea4ec JS |
2349 | end_intr: /* add by Victor Yu. 09-02-2002 */ |
2350 | mxvar_log.rxcnt[port->tty->index] += cnt; | |
2351 | port->mon_data.rxcnt += cnt; | |
2352 | port->mon_data.up_rxcnt += cnt; | |
2353 | spin_unlock_irqrestore(&port->slock, flags); | |
2354 | ||
2355 | tty_flip_buffer_push(tty); | |
037ad48b JS |
2356 | } |
2357 | ||
a8dea4ec | 2358 | static void mxser_transmit_chars(struct mxser_port *port) |
037ad48b | 2359 | { |
a8dea4ec JS |
2360 | int count, cnt; |
2361 | unsigned long flags; | |
037ad48b | 2362 | |
a8dea4ec | 2363 | spin_lock_irqsave(&port->slock, flags); |
037ad48b | 2364 | |
a8dea4ec JS |
2365 | if (port->x_char) { |
2366 | outb(port->x_char, port->ioaddr + UART_TX); | |
2367 | port->x_char = 0; | |
2368 | mxvar_log.txcnt[port->tty->index]++; | |
2369 | port->mon_data.txcnt++; | |
2370 | port->mon_data.up_txcnt++; | |
2371 | ||
2372 | /* added by casper 1/11/2000 */ | |
2373 | port->icount.tx++; | |
2374 | goto unlock; | |
037ad48b JS |
2375 | } |
2376 | ||
a8dea4ec JS |
2377 | if (port->xmit_buf == 0) |
2378 | goto unlock; | |
037ad48b | 2379 | |
a8dea4ec JS |
2380 | if (port->xmit_cnt == 0) { |
2381 | if (port->xmit_cnt < WAKEUP_CHARS) { /* XXX what's this for?? */ | |
2382 | set_bit(MXSER_EVENT_TXLOW, &port->event); | |
2383 | schedule_work(&port->tqueue); | |
2384 | } | |
2385 | goto unlock; | |
2386 | } | |
2387 | if (port->tty->stopped || (port->tty->hw_stopped && | |
2388 | (port->type != PORT_16550A) && | |
2389 | (!port->board->chip_flag))) { | |
2390 | port->IER &= ~UART_IER_THRI; | |
2391 | outb(port->IER, port->ioaddr + UART_IER); | |
2392 | goto unlock; | |
2393 | } | |
037ad48b | 2394 | |
a8dea4ec JS |
2395 | cnt = port->xmit_cnt; |
2396 | count = port->xmit_fifo_size; | |
2397 | do { | |
2398 | outb(port->xmit_buf[port->xmit_tail++], | |
2399 | port->ioaddr + UART_TX); | |
2400 | port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE - 1); | |
2401 | if (--port->xmit_cnt <= 0) | |
2402 | break; | |
2403 | } while (--count > 0); | |
2404 | mxvar_log.txcnt[port->tty->index] += (cnt - port->xmit_cnt); | |
55b307da | 2405 | |
a8dea4ec JS |
2406 | /* added by James 03-12-2004. */ |
2407 | port->mon_data.txcnt += (cnt - port->xmit_cnt); | |
2408 | port->mon_data.up_txcnt += (cnt - port->xmit_cnt); | |
037ad48b | 2409 | |
a8dea4ec JS |
2410 | /* added by casper 1/11/2000 */ |
2411 | port->icount.tx += (cnt - port->xmit_cnt); | |
037ad48b | 2412 | |
a8dea4ec JS |
2413 | if (port->xmit_cnt < WAKEUP_CHARS) { |
2414 | set_bit(MXSER_EVENT_TXLOW, &port->event); | |
2415 | schedule_work(&port->tqueue); | |
2416 | } | |
2417 | if (port->xmit_cnt <= 0) { | |
2418 | port->IER &= ~UART_IER_THRI; | |
2419 | outb(port->IER, port->ioaddr + UART_IER); | |
2420 | } | |
2421 | unlock: | |
2422 | spin_unlock_irqrestore(&port->slock, flags); | |
037ad48b JS |
2423 | } |
2424 | ||
2425 | /* | |
a8dea4ec | 2426 | * This is the serial driver's generic interrupt routine |
037ad48b | 2427 | */ |
a8dea4ec | 2428 | static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
037ad48b | 2429 | { |
a8dea4ec JS |
2430 | int status, iir, i; |
2431 | struct mxser_board *brd = NULL; | |
2432 | struct mxser_port *port; | |
2433 | int max, irqbits, bits, msr; | |
2434 | int pass_counter = 0; | |
2435 | unsigned int int_cnt; | |
2436 | int handled = IRQ_NONE; | |
037ad48b | 2437 | |
a8dea4ec | 2438 | /* spin_lock(&gm_lock); */ |
037ad48b | 2439 | |
a8dea4ec JS |
2440 | for (i = 0; i < MXSER_BOARDS; i++) |
2441 | if (dev_id == &mxser_boards[i]) { | |
2442 | brd = dev_id; | |
2443 | break; | |
2444 | } | |
037ad48b | 2445 | |
a8dea4ec JS |
2446 | if (i == MXSER_BOARDS) |
2447 | goto irq_stop; | |
2448 | if (brd == NULL) | |
2449 | goto irq_stop; | |
2450 | max = mxser_numports[brd->board_type - 1]; | |
2451 | while (1) { | |
2452 | irqbits = inb(brd->vector) & brd->vector_mask; | |
2453 | if (irqbits == brd->vector_mask) | |
2454 | break; | |
037ad48b | 2455 | |
a8dea4ec JS |
2456 | handled = IRQ_HANDLED; |
2457 | for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) { | |
2458 | if (irqbits == brd->vector_mask) | |
2459 | break; | |
2460 | if (bits & irqbits) | |
2461 | continue; | |
2462 | port = &brd->ports[i]; | |
037ad48b | 2463 | |
a8dea4ec JS |
2464 | int_cnt = 0; |
2465 | do { | |
2466 | /* following add by Victor Yu. 09-13-2002 */ | |
2467 | iir = inb(port->ioaddr + UART_IIR); | |
2468 | if (iir & UART_IIR_NO_INT) | |
2469 | break; | |
2470 | iir &= MOXA_MUST_IIR_MASK; | |
2471 | if (!port->tty) { | |
2472 | status = inb(port->ioaddr + UART_LSR); | |
2473 | outb(0x27, port->ioaddr + UART_FCR); | |
2474 | inb(port->ioaddr + UART_MSR); | |
2475 | break; | |
2476 | } | |
2477 | /* above add by Victor Yu. 09-13-2002 */ | |
037ad48b | 2478 | |
a8dea4ec JS |
2479 | /* following add by Victor Yu. 09-02-2002 */ |
2480 | status = inb(port->ioaddr + UART_LSR); | |
2481 | ||
2482 | if (status & UART_LSR_PE) | |
2483 | port->err_shadow |= NPPI_NOTIFY_PARITY; | |
2484 | if (status & UART_LSR_FE) | |
2485 | port->err_shadow |= NPPI_NOTIFY_FRAMING; | |
2486 | if (status & UART_LSR_OE) | |
2487 | port->err_shadow |= | |
2488 | NPPI_NOTIFY_HW_OVERRUN; | |
2489 | if (status & UART_LSR_BI) | |
2490 | port->err_shadow |= NPPI_NOTIFY_BREAK; | |
2491 | ||
2492 | if (port->board->chip_flag) { | |
2493 | /* | |
2494 | if ( (status & 0x02) && !(status & 0x01) ) { | |
2495 | outb(port->ioaddr+UART_FCR, 0x23); | |
2496 | continue; | |
2497 | } | |
2498 | */ | |
2499 | if (iir == MOXA_MUST_IIR_GDA || | |
2500 | iir == MOXA_MUST_IIR_RDA || | |
2501 | iir == MOXA_MUST_IIR_RTO || | |
2502 | iir == MOXA_MUST_IIR_LSR) | |
2503 | mxser_receive_chars(port, | |
2504 | &status); | |
2505 | ||
2506 | } else { | |
2507 | /* above add by Victor Yu. 09-02-2002 */ | |
2508 | ||
2509 | status &= port->read_status_mask; | |
2510 | if (status & UART_LSR_DR) | |
2511 | mxser_receive_chars(port, | |
2512 | &status); | |
2513 | } | |
2514 | msr = inb(port->ioaddr + UART_MSR); | |
2515 | if (msr & UART_MSR_ANY_DELTA) | |
2516 | mxser_check_modem_status(port, msr); | |
2517 | ||
2518 | /* following add by Victor Yu. 09-13-2002 */ | |
2519 | if (port->board->chip_flag) { | |
2520 | if (iir == 0x02 && (status & | |
2521 | UART_LSR_THRE)) | |
2522 | mxser_transmit_chars(port); | |
2523 | } else { | |
2524 | /* above add by Victor Yu. 09-13-2002 */ | |
2525 | ||
2526 | if (status & UART_LSR_THRE) | |
2527 | mxser_transmit_chars(port); | |
2528 | } | |
2529 | } while (int_cnt++ < MXSER_ISR_PASS_LIMIT); | |
2530 | } | |
2531 | if (pass_counter++ > MXSER_ISR_PASS_LIMIT) | |
2532 | break; /* Prevent infinite loops */ | |
2533 | } | |
2534 | ||
2535 | irq_stop: | |
2536 | /* spin_unlock(&gm_lock); */ | |
2537 | return handled; | |
037ad48b JS |
2538 | } |
2539 | ||
a8dea4ec JS |
2540 | static const struct tty_operations mxser_ops = { |
2541 | .open = mxser_open, | |
2542 | .close = mxser_close, | |
2543 | .write = mxser_write, | |
2544 | .put_char = mxser_put_char, | |
2545 | .flush_chars = mxser_flush_chars, | |
2546 | .write_room = mxser_write_room, | |
2547 | .chars_in_buffer = mxser_chars_in_buffer, | |
2548 | .flush_buffer = mxser_flush_buffer, | |
2549 | .ioctl = mxser_ioctl, | |
2550 | .throttle = mxser_throttle, | |
2551 | .unthrottle = mxser_unthrottle, | |
2552 | .set_termios = mxser_set_termios, | |
2553 | .stop = mxser_stop, | |
2554 | .start = mxser_start, | |
2555 | .hangup = mxser_hangup, | |
2556 | .break_ctl = mxser_rs_break, | |
2557 | .wait_until_sent = mxser_wait_until_sent, | |
2558 | .tiocmget = mxser_tiocmget, | |
2559 | .tiocmset = mxser_tiocmset, | |
2560 | }; | |
2561 | ||
2562 | /* | |
2563 | * The MOXA Smartio/Industio serial driver boot-time initialization code! | |
2564 | */ | |
2565 | ||
171d3a86 JS |
2566 | static void mxser_release_res(struct mxser_board *brd, unsigned int irq) |
2567 | { | |
2568 | struct pci_dev *pdev = brd->pdev; | |
2569 | ||
2570 | if (irq) | |
2571 | free_irq(brd->irq, brd); | |
2572 | if (pdev != NULL) { /* PCI */ | |
2573 | pci_release_region(pdev, 2); | |
2574 | pci_release_region(pdev, 3); | |
2575 | pci_dev_put(pdev); | |
2576 | } else { | |
2577 | release_region(brd->ports[0].ioaddr, 8 * brd->nports); | |
2578 | release_region(brd->vector, 1); | |
2579 | } | |
2580 | } | |
2581 | ||
a8dea4ec | 2582 | static int __devinit mxser_initbrd(struct mxser_board *brd) |
037ad48b | 2583 | { |
a8dea4ec JS |
2584 | struct mxser_port *info; |
2585 | unsigned int i; | |
2586 | int retval; | |
2587 | ||
2588 | printk(KERN_INFO "max. baud rate = %d bps.\n", brd->ports[0].max_baud); | |
2589 | ||
2590 | for (i = 0; i < brd->nports; i++) { | |
2591 | info = &brd->ports[i]; | |
2592 | info->board = brd; | |
2593 | info->stop_rx = 0; | |
2594 | info->ldisc_stop_rx = 0; | |
037ad48b | 2595 | |
a8dea4ec JS |
2596 | /* Enhance mode enabled here */ |
2597 | if (brd->chip_flag != MOXA_OTHER_UART) | |
2598 | ENABLE_MOXA_MUST_ENCHANCE_MODE(info->ioaddr); | |
037ad48b | 2599 | |
a8dea4ec JS |
2600 | info->flags = ASYNC_SHARE_IRQ; |
2601 | info->type = brd->uart_type; | |
037ad48b | 2602 | |
a8dea4ec | 2603 | process_txrx_fifo(info); |
037ad48b | 2604 | |
a8dea4ec JS |
2605 | info->custom_divisor = info->baud_base * 16; |
2606 | info->close_delay = 5 * HZ / 10; | |
2607 | info->closing_wait = 30 * HZ; | |
2608 | INIT_WORK(&info->tqueue, mxser_do_softint, info); | |
2609 | info->normal_termios = mxvar_sdriver->init_termios; | |
2610 | init_waitqueue_head(&info->open_wait); | |
2611 | init_waitqueue_head(&info->close_wait); | |
2612 | init_waitqueue_head(&info->delta_msr_wait); | |
2613 | memset(&info->mon_data, 0, sizeof(struct mxser_mon)); | |
2614 | info->err_shadow = 0; | |
2615 | spin_lock_init(&info->slock); | |
037ad48b | 2616 | |
a8dea4ec JS |
2617 | /* before set INT ISR, disable all int */ |
2618 | outb(inb(info->ioaddr + UART_IER) & 0xf0, | |
2619 | info->ioaddr + UART_IER); | |
2620 | } | |
2621 | /* | |
2622 | * Allocate the IRQ if necessary | |
2623 | */ | |
037ad48b | 2624 | |
a8dea4ec JS |
2625 | retval = request_irq(brd->irq, mxser_interrupt, |
2626 | (brd->ports[0].flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : | |
2627 | IRQF_DISABLED, "mxser", brd); | |
2628 | if (retval) { | |
2629 | printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may " | |
2630 | "conflict with another device.\n", | |
2631 | mxser_brdname[brd->board_type - 1], brd->irq); | |
171d3a86 JS |
2632 | /* We hold resources, we need to release them. */ |
2633 | mxser_release_res(brd, 0); | |
a8dea4ec JS |
2634 | return retval; |
2635 | } | |
037ad48b JS |
2636 | return 0; |
2637 | } | |
2638 | ||
943f2959 | 2639 | static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) |
037ad48b JS |
2640 | { |
2641 | int id, i, bits; | |
2642 | unsigned short regs[16], irq; | |
2643 | unsigned char scratch, scratch2; | |
2644 | ||
55b307da | 2645 | brd->chip_flag = MOXA_OTHER_UART; |
037ad48b JS |
2646 | |
2647 | id = mxser_read_register(cap, regs); | |
2648 | if (id == C168_ASIC_ID) { | |
55b307da JS |
2649 | brd->board_type = MXSER_BOARD_C168_ISA; |
2650 | brd->nports = 8; | |
037ad48b | 2651 | } else if (id == C104_ASIC_ID) { |
55b307da JS |
2652 | brd->board_type = MXSER_BOARD_C104_ISA; |
2653 | brd->nports = 4; | |
037ad48b | 2654 | } else if (id == C102_ASIC_ID) { |
55b307da JS |
2655 | brd->board_type = MXSER_BOARD_C102_ISA; |
2656 | brd->nports = 2; | |
037ad48b | 2657 | } else if (id == CI132_ASIC_ID) { |
55b307da JS |
2658 | brd->board_type = MXSER_BOARD_CI132; |
2659 | brd->nports = 2; | |
037ad48b | 2660 | } else if (id == CI134_ASIC_ID) { |
55b307da JS |
2661 | brd->board_type = MXSER_BOARD_CI134; |
2662 | brd->nports = 4; | |
037ad48b | 2663 | } else if (id == CI104J_ASIC_ID) { |
55b307da JS |
2664 | brd->board_type = MXSER_BOARD_CI104J; |
2665 | brd->nports = 4; | |
037ad48b JS |
2666 | } else |
2667 | return 0; | |
2668 | ||
2669 | irq = 0; | |
55b307da | 2670 | if (brd->nports == 2) { |
037ad48b JS |
2671 | irq = regs[9] & 0xF000; |
2672 | irq = irq | (irq >> 4); | |
2673 | if (irq != (regs[9] & 0xFF00)) | |
2674 | return MXSER_ERR_IRQ_CONFLIT; | |
55b307da | 2675 | } else if (brd->nports == 4) { |
037ad48b JS |
2676 | irq = regs[9] & 0xF000; |
2677 | irq = irq | (irq >> 4); | |
2678 | irq = irq | (irq >> 8); | |
2679 | if (irq != regs[9]) | |
2680 | return MXSER_ERR_IRQ_CONFLIT; | |
55b307da | 2681 | } else if (brd->nports == 8) { |
037ad48b JS |
2682 | irq = regs[9] & 0xF000; |
2683 | irq = irq | (irq >> 4); | |
2684 | irq = irq | (irq >> 8); | |
2685 | if ((irq != regs[9]) || (irq != regs[10])) | |
2686 | return MXSER_ERR_IRQ_CONFLIT; | |
2687 | } | |
2688 | ||
a8dea4ec JS |
2689 | if (!irq) |
2690 | return MXSER_ERR_IRQ; | |
2691 | brd->irq = ((int)(irq & 0xF000) >> 12); | |
2692 | for (i = 0; i < 8; i++) | |
2693 | brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8; | |
2694 | if ((regs[12] & 0x80) == 0) | |
2695 | return MXSER_ERR_VECTOR; | |
2696 | brd->vector = (int)regs[11]; /* interrupt vector */ | |
2697 | if (id == 1) | |
2698 | brd->vector_mask = 0x00FF; | |
2699 | else | |
2700 | brd->vector_mask = 0x000F; | |
2701 | for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { | |
2702 | if (regs[12] & bits) { | |
2703 | brd->ports[i].baud_base = 921600; | |
2704 | brd->ports[i].max_baud = 921600; /* add by Victor Yu. 09-04-2002 */ | |
2705 | } else { | |
2706 | brd->ports[i].baud_base = 115200; | |
2707 | brd->ports[i].max_baud = 115200; /* add by Victor Yu. 09-04-2002 */ | |
2708 | } | |
2709 | } | |
2710 | scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); | |
2711 | outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR); | |
2712 | outb(0, cap + UART_EFR); /* EFR is the same as FCR */ | |
2713 | outb(scratch2, cap + UART_LCR); | |
2714 | outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR); | |
2715 | scratch = inb(cap + UART_IIR); | |
2716 | ||
2717 | if (scratch & 0xC0) | |
2718 | brd->uart_type = PORT_16550A; | |
2719 | else | |
2720 | brd->uart_type = PORT_16450; | |
2721 | if (id == 1) | |
2722 | brd->nports = 8; | |
2723 | else | |
2724 | brd->nports = 4; | |
2725 | if (!request_region(brd->ports[0].ioaddr, 8 * brd->nports, "mxser(IO)")) | |
2726 | return MXSER_ERR_IOADDR; | |
2727 | if (!request_region(brd->vector, 1, "mxser(vector)")) { | |
2728 | release_region(brd->ports[0].ioaddr, 8 * brd->nports); | |
2729 | return MXSER_ERR_VECTOR; | |
2730 | } | |
2731 | return brd->nports; | |
2732 | } | |
2733 | ||
2734 | static int __init mxser_get_PCI_conf(int board_type, struct mxser_board *brd, | |
2735 | struct pci_dev *pdev) | |
2736 | { | |
2737 | unsigned int i, j; | |
2738 | unsigned long ioaddress; | |
2739 | int retval; | |
2740 | ||
2741 | /* io address */ | |
2742 | brd->board_type = board_type; | |
2743 | brd->nports = mxser_numports[board_type - 1]; | |
2744 | ioaddress = pci_resource_start(pdev, 2); | |
2745 | retval = pci_request_region(pdev, 2, "mxser(IO)"); | |
2746 | if (retval) | |
2747 | goto err; | |
2748 | ||
2749 | for (i = 0; i < brd->nports; i++) | |
2750 | brd->ports[i].ioaddr = ioaddress + 8 * i; | |
2751 | ||
2752 | /* vector */ | |
2753 | ioaddress = pci_resource_start(pdev, 3); | |
2754 | retval = pci_request_region(pdev, 3, "mxser(vector)"); | |
2755 | if (retval) | |
2756 | goto err_relio; | |
2757 | brd->vector = ioaddress; | |
2758 | ||
2759 | /* irq */ | |
2760 | brd->irq = pdev->irq; | |
2761 | ||
2762 | brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr); | |
2763 | brd->uart_type = PORT_16550A; | |
2764 | brd->vector_mask = 0; | |
2765 | ||
2766 | for (i = 0; i < brd->nports; i++) { | |
2767 | for (j = 0; j < UART_INFO_NUM; j++) { | |
2768 | if (Gpci_uart_info[j].type == brd->chip_flag) { | |
2769 | brd->ports[i].max_baud = | |
2770 | Gpci_uart_info[j].max_baud; | |
2771 | ||
2772 | /* exception....CP-102 */ | |
2773 | if (board_type == MXSER_BOARD_CP102) | |
2774 | brd->ports[i].max_baud = 921600; | |
2775 | break; | |
2776 | } | |
2777 | } | |
2778 | } | |
2779 | ||
2780 | if (brd->chip_flag == MOXA_MUST_MU860_HWID) { | |
2781 | for (i = 0; i < brd->nports; i++) { | |
2782 | if (i < 4) | |
2783 | brd->ports[i].opmode_ioaddr = ioaddress + 4; | |
2784 | else | |
2785 | brd->ports[i].opmode_ioaddr = ioaddress + 0x0c; | |
2786 | } | |
2787 | outb(0, ioaddress + 4); /* default set to RS232 mode */ | |
2788 | outb(0, ioaddress + 0x0c); /* default set to RS232 mode */ | |
2789 | } | |
2790 | ||
2791 | for (i = 0; i < brd->nports; i++) { | |
2792 | brd->vector_mask |= (1 << i); | |
2793 | brd->ports[i].baud_base = 921600; | |
2794 | } | |
2795 | return 0; | |
2796 | err_relio: | |
2797 | pci_release_region(pdev, 2); | |
2798 | err: | |
2799 | return retval; | |
2800 | } | |
2801 | ||
2802 | static int __init mxser_module_init(void) | |
2803 | { | |
2804 | struct pci_dev *pdev = NULL; | |
2805 | struct mxser_board *brd; | |
eae4436a JS |
2806 | unsigned long cap; |
2807 | unsigned int i, m, isaloop; | |
a8dea4ec JS |
2808 | int retval, b, n; |
2809 | ||
2810 | pr_debug("Loading module mxser ...\n"); | |
2811 | ||
2812 | mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); | |
2813 | if (!mxvar_sdriver) | |
2814 | return -ENOMEM; | |
2815 | spin_lock_init(&gm_lock); | |
2816 | ||
2817 | for (i = 0; i < MXSER_BOARDS; i++) | |
2818 | mxser_boards[i].board_type = -1; | |
2819 | ||
2820 | printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", | |
2821 | MXSER_VERSION); | |
2822 | ||
2823 | /* Initialize the tty_driver structure */ | |
2824 | mxvar_sdriver->magic = TTY_DRIVER_MAGIC; | |
2825 | mxvar_sdriver->name = "ttyM"; | |
2826 | mxvar_sdriver->major = ttymajor; | |
2827 | mxvar_sdriver->minor_start = 0; | |
2828 | mxvar_sdriver->num = MXSER_PORTS + 1; | |
2829 | mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL; | |
2830 | mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL; | |
2831 | mxvar_sdriver->init_termios = tty_std_termios; | |
2832 | mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; | |
938ef180 | 2833 | mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_DYNAMIC_DEV; |
a8dea4ec JS |
2834 | tty_set_operations(mxvar_sdriver, &mxser_ops); |
2835 | mxvar_sdriver->ttys = mxvar_tty; | |
2836 | mxvar_sdriver->termios = mxvar_termios; | |
2837 | mxvar_sdriver->termios_locked = mxvar_termios_locked; | |
2838 | ||
938ef180 JS |
2839 | retval = tty_register_driver(mxvar_sdriver); |
2840 | if (retval) { | |
2841 | printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family " | |
2842 | "tty driver !\n"); | |
2843 | goto err_put; | |
2844 | } | |
2845 | ||
a8dea4ec JS |
2846 | mxvar_diagflag = 0; |
2847 | ||
2848 | m = 0; | |
2849 | /* Start finding ISA boards here */ | |
eae4436a JS |
2850 | for (isaloop = 0; isaloop < 2; isaloop++) |
2851 | for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { | |
2852 | if (!isaloop) | |
2853 | cap = mxserBoardCAP[b]; /* predefined */ | |
2854 | else | |
2855 | cap = ioaddr[b]; /* module param */ | |
a8dea4ec | 2856 | |
eae4436a JS |
2857 | if (!cap) |
2858 | continue; | |
a8dea4ec | 2859 | |
eae4436a JS |
2860 | brd = &mxser_boards[m]; |
2861 | retval = mxser_get_ISA_conf(cap, brd); | |
2862 | ||
2863 | if (retval != 0) | |
2864 | printk(KERN_INFO "Found MOXA %s board " | |
2865 | "(CAP=0x%x)\n", | |
2866 | mxser_brdname[brd->board_type - 1], | |
2867 | ioaddr[b]); | |
2868 | ||
2869 | if (retval <= 0) { | |
2870 | if (retval == MXSER_ERR_IRQ) | |
2871 | printk(KERN_ERR "Invalid interrupt " | |
2872 | "number, board not " | |
2873 | "configured\n"); | |
2874 | else if (retval == MXSER_ERR_IRQ_CONFLIT) | |
2875 | printk(KERN_ERR "Invalid interrupt " | |
2876 | "number, board not " | |
2877 | "configured\n"); | |
2878 | else if (retval == MXSER_ERR_VECTOR) | |
2879 | printk(KERN_ERR "Invalid interrupt " | |
2880 | "vector, board not " | |
2881 | "configured\n"); | |
2882 | else if (retval == MXSER_ERR_IOADDR) | |
2883 | printk(KERN_ERR "Invalid I/O address, " | |
2884 | "board not configured\n"); | |
a8dea4ec | 2885 | |
eae4436a JS |
2886 | continue; |
2887 | } | |
a8dea4ec | 2888 | |
eae4436a | 2889 | brd->pdev = NULL; |
a8dea4ec | 2890 | |
eae4436a JS |
2891 | /* mxser_initbrd will hook ISR. */ |
2892 | if (mxser_initbrd(brd) < 0) | |
2893 | continue; | |
a8dea4ec | 2894 | |
938ef180 JS |
2895 | for (i = 0; i < brd->nports; i++) |
2896 | tty_register_device(mxvar_sdriver, | |
2897 | m * MXSER_PORTS_PER_BOARD + i, NULL); | |
2898 | ||
eae4436a | 2899 | m++; |
037ad48b | 2900 | } |
a8dea4ec | 2901 | |
a8dea4ec JS |
2902 | /* start finding PCI board here */ |
2903 | n = ARRAY_SIZE(mxser_pcibrds) - 1; | |
2904 | b = 0; | |
2905 | while (b < n) { | |
2906 | pdev = pci_get_device(mxser_pcibrds[b].vendor, | |
2907 | mxser_pcibrds[b].device, pdev); | |
2908 | if (pdev == NULL) { | |
2909 | b++; | |
2910 | continue; | |
2911 | } | |
2912 | printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n", | |
2913 | mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1], | |
2914 | pdev->bus->number, PCI_SLOT(pdev->devfn)); | |
2915 | if (m >= MXSER_BOARDS) | |
2916 | printk(KERN_ERR | |
2917 | "Too many Smartio/Industio family boards find " | |
2918 | "(maximum %d), board not configured\n", | |
2919 | MXSER_BOARDS); | |
2920 | else { | |
2921 | if (pci_enable_device(pdev)) { | |
2922 | printk(KERN_ERR "Moxa SmartI/O PCI enable " | |
2923 | "fail !\n"); | |
2924 | continue; | |
2925 | } | |
2926 | brd = &mxser_boards[m]; | |
2927 | brd->pdev = pdev; | |
2928 | retval = mxser_get_PCI_conf( | |
2929 | (int)mxser_pcibrds[b].driver_data, | |
2930 | brd, pdev); | |
2931 | if (retval < 0) { | |
2932 | if (retval == MXSER_ERR_IRQ) | |
2933 | printk(KERN_ERR | |
2934 | "Invalid interrupt number, " | |
2935 | "board not configured\n"); | |
2936 | else if (retval == MXSER_ERR_IRQ_CONFLIT) | |
2937 | printk(KERN_ERR | |
2938 | "Invalid interrupt number, " | |
2939 | "board not configured\n"); | |
2940 | else if (retval == MXSER_ERR_VECTOR) | |
2941 | printk(KERN_ERR | |
2942 | "Invalid interrupt vector, " | |
2943 | "board not configured\n"); | |
2944 | else if (retval == MXSER_ERR_IOADDR) | |
2945 | printk(KERN_ERR | |
2946 | "Invalid I/O address, " | |
2947 | "board not configured\n"); | |
2948 | continue; | |
2949 | } | |
2950 | /* mxser_initbrd will hook ISR. */ | |
2951 | if (mxser_initbrd(brd) < 0) | |
2952 | continue; | |
938ef180 JS |
2953 | for (i = 0; i < brd->nports; i++) |
2954 | tty_register_device(mxvar_sdriver, | |
2955 | m * MXSER_PORTS_PER_BOARD + i, | |
2956 | &pdev->dev); | |
2957 | ||
a8dea4ec JS |
2958 | m++; |
2959 | /* Keep an extra reference if we succeeded. It will | |
2960 | be returned at unload time */ | |
2961 | pci_dev_get(pdev); | |
2962 | } | |
7a7a5c33 | 2963 | } |
037ad48b | 2964 | |
938ef180 JS |
2965 | if (!m) { |
2966 | retval = -ENODEV; | |
2967 | goto err_unr; | |
037ad48b | 2968 | } |
a8dea4ec JS |
2969 | |
2970 | pr_debug("Done.\n"); | |
2971 | ||
938ef180 JS |
2972 | return 0; |
2973 | err_unr: | |
2974 | tty_unregister_driver(mxvar_sdriver); | |
2975 | err_put: | |
2976 | put_tty_driver(mxvar_sdriver); | |
a8dea4ec | 2977 | return retval; |
037ad48b JS |
2978 | } |
2979 | ||
a8dea4ec | 2980 | static void __exit mxser_module_exit(void) |
037ad48b | 2981 | { |
ead568c9 | 2982 | unsigned int i; |
037ad48b | 2983 | |
a8dea4ec | 2984 | pr_debug("Unloading module mxser ...\n"); |
037ad48b | 2985 | |
938ef180 JS |
2986 | for (i = 0; i < MXSER_PORTS; i++) |
2987 | tty_unregister_device(mxvar_sdriver, i); | |
ead568c9 JS |
2988 | tty_unregister_driver(mxvar_sdriver); |
2989 | put_tty_driver(mxvar_sdriver); | |
037ad48b | 2990 | |
171d3a86 JS |
2991 | for (i = 0; i < MXSER_BOARDS; i++) |
2992 | if (mxser_boards[i].board_type != -1) | |
2993 | mxser_release_res(&mxser_boards[i], 1); | |
037ad48b | 2994 | |
a8dea4ec | 2995 | pr_debug("Done.\n"); |
037ad48b JS |
2996 | } |
2997 | ||
2998 | module_init(mxser_module_init); | |
2999 | module_exit(mxser_module_exit); |