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1da177e4 LT |
1 | /* |
2 | * mxser.c -- MOXA Smartio/Industio family multiport serial driver. | |
3 | * | |
4 | * Copyright (C) 1999-2001 Moxa Technologies (support@moxa.com.tw). | |
5 | * | |
6 | * This code is loosely based on the Linux serial driver, written by | |
7 | * Linus Torvalds, Theodore T'so and others. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
8ea2c2ec | 12 | * (at your option) any later version. |
1da177e4 LT |
13 | * |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | * | |
23 | * Original release 10/26/00 | |
24 | * | |
25 | * 02/06/01 Support MOXA Industio family boards. | |
26 | * 02/06/01 Support TIOCGICOUNT. | |
27 | * 02/06/01 Fix the problem for connecting to serial mouse. | |
28 | * 02/06/01 Fix the problem for H/W flow control. | |
29 | * 02/06/01 Fix the compling warning when CONFIG_PCI | |
30 | * don't be defined. | |
31 | * | |
32 | * Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox | |
33 | * <alan@redhat.com>. The original 1.8 code is available on www.moxa.com. | |
34 | * - Fixed x86_64 cleanness | |
35 | * - Fixed sleep with spinlock held in mxser_send_break | |
36 | */ | |
37 | ||
38 | ||
1da177e4 | 39 | #include <linux/module.h> |
1da177e4 LT |
40 | #include <linux/autoconf.h> |
41 | #include <linux/errno.h> | |
42 | #include <linux/signal.h> | |
43 | #include <linux/sched.h> | |
44 | #include <linux/timer.h> | |
45 | #include <linux/interrupt.h> | |
46 | #include <linux/tty.h> | |
47 | #include <linux/tty_flip.h> | |
48 | #include <linux/serial.h> | |
49 | #include <linux/serial_reg.h> | |
50 | #include <linux/major.h> | |
51 | #include <linux/string.h> | |
52 | #include <linux/fcntl.h> | |
53 | #include <linux/ptrace.h> | |
54 | #include <linux/gfp.h> | |
55 | #include <linux/ioport.h> | |
56 | #include <linux/mm.h> | |
57 | #include <linux/smp_lock.h> | |
58 | #include <linux/delay.h> | |
59 | #include <linux/pci.h> | |
60 | ||
61 | #include <asm/system.h> | |
62 | #include <asm/io.h> | |
63 | #include <asm/irq.h> | |
1da177e4 LT |
64 | #include <asm/bitops.h> |
65 | #include <asm/uaccess.h> | |
66 | ||
67 | #include "mxser.h" | |
68 | ||
69 | #define MXSER_VERSION "1.8" | |
70 | #define MXSERMAJOR 174 | |
71 | #define MXSERCUMAJOR 175 | |
72 | ||
8ea2c2ec JJ |
73 | #define MXSER_EVENT_TXLOW 1 |
74 | #define MXSER_EVENT_HANGUP 2 | |
1da177e4 LT |
75 | |
76 | #define MXSER_BOARDS 4 /* Max. boards */ | |
77 | #define MXSER_PORTS 32 /* Max. ports */ | |
78 | #define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */ | |
79 | #define MXSER_ISR_PASS_LIMIT 256 | |
80 | ||
81 | #define MXSER_ERR_IOADDR -1 | |
82 | #define MXSER_ERR_IRQ -2 | |
83 | #define MXSER_ERR_IRQ_CONFLIT -3 | |
84 | #define MXSER_ERR_VECTOR -4 | |
85 | ||
86 | #define SERIAL_TYPE_NORMAL 1 | |
87 | #define SERIAL_TYPE_CALLOUT 2 | |
88 | ||
89 | #define WAKEUP_CHARS 256 | |
90 | ||
91 | #define UART_MCR_AFE 0x20 | |
92 | #define UART_LSR_SPECIAL 0x1E | |
93 | ||
8ea2c2ec JJ |
94 | #define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|\ |
95 | IXON|IXOFF)) | |
1da177e4 | 96 | |
0f2ed4c6 | 97 | #define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : IRQF_DISABLED) |
1da177e4 LT |
98 | |
99 | #define C168_ASIC_ID 1 | |
100 | #define C104_ASIC_ID 2 | |
101 | #define C102_ASIC_ID 0xB | |
102 | #define CI132_ASIC_ID 4 | |
103 | #define CI134_ASIC_ID 3 | |
104 | #define CI104J_ASIC_ID 5 | |
105 | ||
106 | enum { | |
107 | MXSER_BOARD_C168_ISA = 1, | |
108 | MXSER_BOARD_C104_ISA, | |
109 | MXSER_BOARD_CI104J, | |
110 | MXSER_BOARD_C168_PCI, | |
111 | MXSER_BOARD_C104_PCI, | |
112 | MXSER_BOARD_C102_ISA, | |
113 | MXSER_BOARD_CI132, | |
114 | MXSER_BOARD_CI134, | |
115 | MXSER_BOARD_CP132, | |
116 | MXSER_BOARD_CP114, | |
117 | MXSER_BOARD_CT114, | |
118 | MXSER_BOARD_CP102, | |
119 | MXSER_BOARD_CP104U, | |
120 | MXSER_BOARD_CP168U, | |
121 | MXSER_BOARD_CP132U, | |
122 | MXSER_BOARD_CP134U, | |
123 | MXSER_BOARD_CP104JU, | |
124 | MXSER_BOARD_RC7000, | |
125 | MXSER_BOARD_CP118U, | |
126 | MXSER_BOARD_CP102UL, | |
127 | MXSER_BOARD_CP102U, | |
128 | }; | |
129 | ||
130 | static char *mxser_brdname[] = { | |
131 | "C168 series", | |
132 | "C104 series", | |
133 | "CI-104J series", | |
134 | "C168H/PCI series", | |
135 | "C104H/PCI series", | |
136 | "C102 series", | |
137 | "CI-132 series", | |
138 | "CI-134 series", | |
139 | "CP-132 series", | |
140 | "CP-114 series", | |
141 | "CT-114 series", | |
142 | "CP-102 series", | |
143 | "CP-104U series", | |
144 | "CP-168U series", | |
145 | "CP-132U series", | |
146 | "CP-134U series", | |
147 | "CP-104JU series", | |
148 | "Moxa UC7000 Serial", | |
149 | "CP-118U series", | |
150 | "CP-102UL series", | |
151 | "CP-102U series", | |
152 | }; | |
153 | ||
154 | static int mxser_numports[] = { | |
8ea2c2ec JJ |
155 | 8, /* C168-ISA */ |
156 | 4, /* C104-ISA */ | |
157 | 4, /* CI104J */ | |
158 | 8, /* C168-PCI */ | |
159 | 4, /* C104-PCI */ | |
160 | 2, /* C102-ISA */ | |
161 | 2, /* CI132 */ | |
162 | 4, /* CI134 */ | |
163 | 2, /* CP132 */ | |
164 | 4, /* CP114 */ | |
165 | 4, /* CT114 */ | |
166 | 2, /* CP102 */ | |
167 | 4, /* CP104U */ | |
168 | 8, /* CP168U */ | |
169 | 2, /* CP132U */ | |
170 | 4, /* CP134U */ | |
171 | 4, /* CP104JU */ | |
172 | 8, /* RC7000 */ | |
173 | 8, /* CP118U */ | |
174 | 2, /* CP102UL */ | |
175 | 2, /* CP102U */ | |
1da177e4 LT |
176 | }; |
177 | ||
178 | #define UART_TYPE_NUM 2 | |
179 | ||
180 | static const unsigned int Gmoxa_uart_id[UART_TYPE_NUM] = { | |
181 | MOXA_MUST_MU150_HWID, | |
182 | MOXA_MUST_MU860_HWID | |
183 | }; | |
184 | ||
8ea2c2ec | 185 | /* This is only for PCI */ |
1da177e4 LT |
186 | #define UART_INFO_NUM 3 |
187 | struct mxpciuart_info { | |
188 | int type; | |
189 | int tx_fifo; | |
190 | int rx_fifo; | |
191 | int xmit_fifo_size; | |
192 | int rx_high_water; | |
193 | int rx_trigger; | |
194 | int rx_low_water; | |
195 | long max_baud; | |
196 | }; | |
197 | ||
198 | static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = { | |
199 | {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L}, | |
200 | {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L}, | |
201 | {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} | |
202 | }; | |
203 | ||
204 | ||
205 | #ifdef CONFIG_PCI | |
206 | ||
207 | static struct pci_device_id mxser_pcibrds[] = { | |
208 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C168_PCI}, | |
209 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C104_PCI}, | |
210 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132}, | |
211 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP114}, | |
212 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CT114}, | |
213 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102}, | |
214 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104U}, | |
215 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP168U}, | |
216 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132U}, | |
217 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP134U}, | |
218 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104JU}, | |
219 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_RC7000}, | |
220 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP118U}, | |
221 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102UL}, | |
222 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102U}, | |
223 | {0} | |
224 | }; | |
225 | ||
226 | MODULE_DEVICE_TABLE(pci, mxser_pcibrds); | |
227 | ||
228 | ||
229 | #endif | |
230 | ||
231 | typedef struct _moxa_pci_info { | |
232 | unsigned short busNum; | |
233 | unsigned short devNum; | |
8ea2c2ec | 234 | struct pci_dev *pdev; /* add by Victor Yu. 06-23-2003 */ |
1da177e4 LT |
235 | } moxa_pci_info; |
236 | ||
237 | static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 }; | |
238 | static int ttymajor = MXSERMAJOR; | |
239 | static int calloutmajor = MXSERCUMAJOR; | |
240 | static int verbose = 0; | |
241 | ||
242 | /* Variables for insmod */ | |
243 | ||
244 | MODULE_AUTHOR("Casper Yang"); | |
245 | MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); | |
8d3b33f6 RR |
246 | module_param_array(ioaddr, int, NULL, 0); |
247 | module_param(ttymajor, int, 0); | |
248 | module_param(calloutmajor, int, 0); | |
249 | module_param(verbose, bool, 0); | |
1da177e4 LT |
250 | MODULE_LICENSE("GPL"); |
251 | ||
252 | struct mxser_log { | |
253 | int tick; | |
254 | unsigned long rxcnt[MXSER_PORTS]; | |
255 | unsigned long txcnt[MXSER_PORTS]; | |
256 | }; | |
257 | ||
258 | ||
259 | struct mxser_mon { | |
260 | unsigned long rxcnt; | |
261 | unsigned long txcnt; | |
262 | unsigned long up_rxcnt; | |
263 | unsigned long up_txcnt; | |
264 | int modem_status; | |
265 | unsigned char hold_reason; | |
266 | }; | |
267 | ||
268 | struct mxser_mon_ext { | |
269 | unsigned long rx_cnt[32]; | |
270 | unsigned long tx_cnt[32]; | |
271 | unsigned long up_rxcnt[32]; | |
272 | unsigned long up_txcnt[32]; | |
273 | int modem_status[32]; | |
274 | ||
275 | long baudrate[32]; | |
276 | int databits[32]; | |
277 | int stopbits[32]; | |
278 | int parity[32]; | |
279 | int flowctrl[32]; | |
280 | int fifo[32]; | |
281 | int iftype[32]; | |
282 | }; | |
8ea2c2ec | 283 | |
1da177e4 LT |
284 | struct mxser_hwconf { |
285 | int board_type; | |
286 | int ports; | |
287 | int irq; | |
288 | int vector; | |
289 | int vector_mask; | |
290 | int uart_type; | |
291 | int ioaddr[MXSER_PORTS_PER_BOARD]; | |
292 | int baud_base[MXSER_PORTS_PER_BOARD]; | |
293 | moxa_pci_info pciInfo; | |
8ea2c2ec JJ |
294 | int IsMoxaMustChipFlag; /* add by Victor Yu. 08-30-2002 */ |
295 | int MaxCanSetBaudRate[MXSER_PORTS_PER_BOARD]; /* add by Victor Yu. 09-04-2002 */ | |
296 | int opmode_ioaddr[MXSER_PORTS_PER_BOARD]; /* add by Victor Yu. 01-05-2004 */ | |
1da177e4 LT |
297 | }; |
298 | ||
299 | struct mxser_struct { | |
300 | int port; | |
301 | int base; /* port base address */ | |
302 | int irq; /* port using irq no. */ | |
303 | int vector; /* port irq vector */ | |
304 | int vectormask; /* port vector mask */ | |
305 | int rx_high_water; | |
306 | int rx_trigger; /* Rx fifo trigger level */ | |
307 | int rx_low_water; | |
308 | int baud_base; /* max. speed */ | |
309 | int flags; /* defined in tty.h */ | |
310 | int type; /* UART type */ | |
311 | struct tty_struct *tty; | |
312 | int read_status_mask; | |
313 | int ignore_status_mask; | |
314 | int xmit_fifo_size; | |
315 | int custom_divisor; | |
316 | int x_char; /* xon/xoff character */ | |
317 | int close_delay; | |
318 | unsigned short closing_wait; | |
319 | int IER; /* Interrupt Enable Register */ | |
320 | int MCR; /* Modem control register */ | |
321 | unsigned long event; | |
322 | int count; /* # of fd on device */ | |
323 | int blocked_open; /* # of blocked opens */ | |
324 | long session; /* Session of opening process */ | |
325 | long pgrp; /* pgrp of opening process */ | |
326 | unsigned char *xmit_buf; | |
327 | int xmit_head; | |
328 | int xmit_tail; | |
329 | int xmit_cnt; | |
330 | struct work_struct tqueue; | |
606d099c AC |
331 | struct ktermios normal_termios; |
332 | struct ktermios callout_termios; | |
1da177e4 LT |
333 | wait_queue_head_t open_wait; |
334 | wait_queue_head_t close_wait; | |
335 | wait_queue_head_t delta_msr_wait; | |
336 | struct async_icount icount; /* kernel counters for the 4 input interrupts */ | |
337 | int timeout; | |
8ea2c2ec JJ |
338 | int IsMoxaMustChipFlag; /* add by Victor Yu. 08-30-2002 */ |
339 | int MaxCanSetBaudRate; /* add by Victor Yu. 09-04-2002 */ | |
340 | int opmode_ioaddr; /* add by Victor Yu. 01-05-2004 */ | |
1da177e4 LT |
341 | unsigned char stop_rx; |
342 | unsigned char ldisc_stop_rx; | |
343 | long realbaud; | |
344 | struct mxser_mon mon_data; | |
345 | unsigned char err_shadow; | |
346 | spinlock_t slock; | |
347 | }; | |
348 | ||
1da177e4 LT |
349 | struct mxser_mstatus { |
350 | tcflag_t cflag; | |
351 | int cts; | |
352 | int dsr; | |
353 | int ri; | |
354 | int dcd; | |
355 | }; | |
356 | ||
357 | static struct mxser_mstatus GMStatus[MXSER_PORTS]; | |
358 | ||
359 | static int mxserBoardCAP[MXSER_BOARDS] = { | |
360 | 0, 0, 0, 0 | |
8ea2c2ec | 361 | /* 0x180, 0x280, 0x200, 0x320 */ |
1da177e4 LT |
362 | }; |
363 | ||
364 | static struct tty_driver *mxvar_sdriver; | |
365 | static struct mxser_struct mxvar_table[MXSER_PORTS]; | |
366 | static struct tty_struct *mxvar_tty[MXSER_PORTS + 1]; | |
606d099c AC |
367 | static struct ktermios *mxvar_termios[MXSER_PORTS + 1]; |
368 | static struct ktermios *mxvar_termios_locked[MXSER_PORTS + 1]; | |
1da177e4 LT |
369 | static struct mxser_log mxvar_log; |
370 | static int mxvar_diagflag; | |
371 | static unsigned char mxser_msr[MXSER_PORTS + 1]; | |
372 | static struct mxser_mon_ext mon_data_ext; | |
373 | static int mxser_set_baud_method[MXSER_PORTS + 1]; | |
374 | static spinlock_t gm_lock; | |
375 | ||
376 | /* | |
377 | * This is used to figure out the divisor speeds and the timeouts | |
378 | */ | |
379 | ||
380 | static struct mxser_hwconf mxsercfg[MXSER_BOARDS]; | |
381 | ||
382 | /* | |
383 | * static functions: | |
384 | */ | |
385 | ||
386 | static void mxser_getcfg(int board, struct mxser_hwconf *hwconf); | |
387 | static int mxser_init(void); | |
388 | ||
8ea2c2ec | 389 | /* static void mxser_poll(unsigned long); */ |
1da177e4 LT |
390 | static int mxser_get_ISA_conf(int, struct mxser_hwconf *); |
391 | static int mxser_get_PCI_conf(int, int, int, struct mxser_hwconf *); | |
c4028958 | 392 | static void mxser_do_softint(struct work_struct *); |
1da177e4 LT |
393 | static int mxser_open(struct tty_struct *, struct file *); |
394 | static void mxser_close(struct tty_struct *, struct file *); | |
395 | static int mxser_write(struct tty_struct *, const unsigned char *, int); | |
396 | static int mxser_write_room(struct tty_struct *); | |
397 | static void mxser_flush_buffer(struct tty_struct *); | |
398 | static int mxser_chars_in_buffer(struct tty_struct *); | |
399 | static void mxser_flush_chars(struct tty_struct *); | |
400 | static void mxser_put_char(struct tty_struct *, unsigned char); | |
401 | static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong); | |
402 | static int mxser_ioctl_special(unsigned int, void __user *); | |
403 | static void mxser_throttle(struct tty_struct *); | |
404 | static void mxser_unthrottle(struct tty_struct *); | |
606d099c | 405 | static void mxser_set_termios(struct tty_struct *, struct ktermios *); |
1da177e4 LT |
406 | static void mxser_stop(struct tty_struct *); |
407 | static void mxser_start(struct tty_struct *); | |
408 | static void mxser_hangup(struct tty_struct *); | |
409 | static void mxser_rs_break(struct tty_struct *, int); | |
7d12e780 | 410 | static irqreturn_t mxser_interrupt(int, void *); |
1da177e4 LT |
411 | static void mxser_receive_chars(struct mxser_struct *, int *); |
412 | static void mxser_transmit_chars(struct mxser_struct *); | |
413 | static void mxser_check_modem_status(struct mxser_struct *, int); | |
414 | static int mxser_block_til_ready(struct tty_struct *, struct file *, struct mxser_struct *); | |
415 | static int mxser_startup(struct mxser_struct *); | |
416 | static void mxser_shutdown(struct mxser_struct *); | |
606d099c | 417 | static int mxser_change_speed(struct mxser_struct *, struct ktermios *old_termios); |
1da177e4 LT |
418 | static int mxser_get_serial_info(struct mxser_struct *, struct serial_struct __user *); |
419 | static int mxser_set_serial_info(struct mxser_struct *, struct serial_struct __user *); | |
420 | static int mxser_get_lsr_info(struct mxser_struct *, unsigned int __user *); | |
421 | static void mxser_send_break(struct mxser_struct *, int); | |
422 | static int mxser_tiocmget(struct tty_struct *, struct file *); | |
423 | static int mxser_tiocmset(struct tty_struct *, struct file *, unsigned int, unsigned int); | |
424 | static int mxser_set_baud(struct mxser_struct *info, long newspd); | |
425 | static void mxser_wait_until_sent(struct tty_struct *tty, int timeout); | |
426 | ||
427 | static void mxser_startrx(struct tty_struct *tty); | |
428 | static void mxser_stoprx(struct tty_struct *tty); | |
429 | ||
430 | ||
431 | static int CheckIsMoxaMust(int io) | |
432 | { | |
433 | u8 oldmcr, hwid; | |
434 | int i; | |
435 | ||
436 | outb(0, io + UART_LCR); | |
437 | DISABLE_MOXA_MUST_ENCHANCE_MODE(io); | |
438 | oldmcr = inb(io + UART_MCR); | |
439 | outb(0, io + UART_MCR); | |
440 | SET_MOXA_MUST_XON1_VALUE(io, 0x11); | |
441 | if ((hwid = inb(io + UART_MCR)) != 0) { | |
442 | outb(oldmcr, io + UART_MCR); | |
8ea2c2ec | 443 | return MOXA_OTHER_UART; |
1da177e4 LT |
444 | } |
445 | ||
446 | GET_MOXA_MUST_HARDWARE_ID(io, &hwid); | |
447 | for (i = 0; i < UART_TYPE_NUM; i++) { | |
448 | if (hwid == Gmoxa_uart_id[i]) | |
8ea2c2ec | 449 | return (int)hwid; |
1da177e4 LT |
450 | } |
451 | return MOXA_OTHER_UART; | |
452 | } | |
453 | ||
8ea2c2ec | 454 | /* above is modified by Victor Yu. 08-15-2002 */ |
1da177e4 | 455 | |
b68e31d0 | 456 | static const struct tty_operations mxser_ops = { |
1da177e4 LT |
457 | .open = mxser_open, |
458 | .close = mxser_close, | |
459 | .write = mxser_write, | |
460 | .put_char = mxser_put_char, | |
461 | .flush_chars = mxser_flush_chars, | |
462 | .write_room = mxser_write_room, | |
463 | .chars_in_buffer = mxser_chars_in_buffer, | |
464 | .flush_buffer = mxser_flush_buffer, | |
465 | .ioctl = mxser_ioctl, | |
466 | .throttle = mxser_throttle, | |
467 | .unthrottle = mxser_unthrottle, | |
468 | .set_termios = mxser_set_termios, | |
469 | .stop = mxser_stop, | |
470 | .start = mxser_start, | |
471 | .hangup = mxser_hangup, | |
57432345 KS |
472 | .break_ctl = mxser_rs_break, |
473 | .wait_until_sent = mxser_wait_until_sent, | |
1da177e4 LT |
474 | .tiocmget = mxser_tiocmget, |
475 | .tiocmset = mxser_tiocmset, | |
476 | }; | |
477 | ||
478 | /* | |
479 | * The MOXA Smartio/Industio serial driver boot-time initialization code! | |
480 | */ | |
481 | ||
482 | static int __init mxser_module_init(void) | |
483 | { | |
484 | int ret; | |
485 | ||
486 | if (verbose) | |
487 | printk(KERN_DEBUG "Loading module mxser ...\n"); | |
488 | ret = mxser_init(); | |
489 | if (verbose) | |
490 | printk(KERN_DEBUG "Done.\n"); | |
491 | return ret; | |
492 | } | |
493 | ||
494 | static void __exit mxser_module_exit(void) | |
495 | { | |
64698b69 | 496 | int i, err; |
1da177e4 LT |
497 | |
498 | if (verbose) | |
499 | printk(KERN_DEBUG "Unloading module mxser ...\n"); | |
500 | ||
64698b69 KS |
501 | err = tty_unregister_driver(mxvar_sdriver); |
502 | if (!err) | |
503 | put_tty_driver(mxvar_sdriver); | |
504 | else | |
1da177e4 LT |
505 | printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n"); |
506 | ||
507 | for (i = 0; i < MXSER_BOARDS; i++) { | |
508 | struct pci_dev *pdev; | |
509 | ||
510 | if (mxsercfg[i].board_type == -1) | |
511 | continue; | |
512 | else { | |
513 | pdev = mxsercfg[i].pciInfo.pdev; | |
514 | free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]); | |
8ea2c2ec | 515 | if (pdev != NULL) { /* PCI */ |
1da177e4 LT |
516 | release_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2)); |
517 | release_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3)); | |
1187ece3 | 518 | pci_dev_put(pdev); |
1da177e4 LT |
519 | } else { |
520 | release_region(mxsercfg[i].ioaddr[0], 8 * mxsercfg[i].ports); | |
521 | release_region(mxsercfg[i].vector, 1); | |
522 | } | |
523 | } | |
524 | } | |
525 | if (verbose) | |
526 | printk(KERN_DEBUG "Done.\n"); | |
1da177e4 LT |
527 | } |
528 | ||
529 | static void process_txrx_fifo(struct mxser_struct *info) | |
530 | { | |
531 | int i; | |
532 | ||
533 | if ((info->type == PORT_16450) || (info->type == PORT_8250)) { | |
534 | info->rx_trigger = 1; | |
535 | info->rx_high_water = 1; | |
536 | info->rx_low_water = 1; | |
537 | info->xmit_fifo_size = 1; | |
538 | } else { | |
539 | for (i = 0; i < UART_INFO_NUM; i++) { | |
540 | if (info->IsMoxaMustChipFlag == Gpci_uart_info[i].type) { | |
541 | info->rx_trigger = Gpci_uart_info[i].rx_trigger; | |
542 | info->rx_low_water = Gpci_uart_info[i].rx_low_water; | |
543 | info->rx_high_water = Gpci_uart_info[i].rx_high_water; | |
544 | info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size; | |
545 | break; | |
546 | } | |
547 | } | |
548 | } | |
549 | } | |
550 | ||
551 | static int mxser_initbrd(int board, struct mxser_hwconf *hwconf) | |
552 | { | |
553 | struct mxser_struct *info; | |
554 | int retval; | |
555 | int i, n; | |
556 | ||
557 | n = board * MXSER_PORTS_PER_BOARD; | |
558 | info = &mxvar_table[n]; | |
559 | /*if (verbose) */ { | |
ae25f8ec | 560 | printk(KERN_DEBUG " ttyMI%d - ttyMI%d ", |
8ea2c2ec JJ |
561 | n, n + hwconf->ports - 1); |
562 | printk(" max. baud rate = %d bps.\n", | |
563 | hwconf->MaxCanSetBaudRate[0]); | |
1da177e4 LT |
564 | } |
565 | ||
566 | for (i = 0; i < hwconf->ports; i++, n++, info++) { | |
567 | info->port = n; | |
568 | info->base = hwconf->ioaddr[i]; | |
569 | info->irq = hwconf->irq; | |
570 | info->vector = hwconf->vector; | |
571 | info->vectormask = hwconf->vector_mask; | |
8ea2c2ec | 572 | info->opmode_ioaddr = hwconf->opmode_ioaddr[i]; /* add by Victor Yu. 01-05-2004 */ |
1da177e4 LT |
573 | info->stop_rx = 0; |
574 | info->ldisc_stop_rx = 0; | |
575 | ||
576 | info->IsMoxaMustChipFlag = hwconf->IsMoxaMustChipFlag; | |
8ea2c2ec | 577 | /* Enhance mode enabled here */ |
1da177e4 LT |
578 | if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) { |
579 | ENABLE_MOXA_MUST_ENCHANCE_MODE(info->base); | |
580 | } | |
581 | ||
582 | info->flags = ASYNC_SHARE_IRQ; | |
583 | info->type = hwconf->uart_type; | |
584 | info->baud_base = hwconf->baud_base[i]; | |
585 | ||
586 | info->MaxCanSetBaudRate = hwconf->MaxCanSetBaudRate[i]; | |
587 | ||
588 | process_txrx_fifo(info); | |
589 | ||
590 | ||
591 | info->custom_divisor = hwconf->baud_base[i] * 16; | |
592 | info->close_delay = 5 * HZ / 10; | |
593 | info->closing_wait = 30 * HZ; | |
c4028958 | 594 | INIT_WORK(&info->tqueue, mxser_do_softint); |
1da177e4 LT |
595 | info->normal_termios = mxvar_sdriver->init_termios; |
596 | init_waitqueue_head(&info->open_wait); | |
597 | init_waitqueue_head(&info->close_wait); | |
598 | init_waitqueue_head(&info->delta_msr_wait); | |
599 | memset(&info->mon_data, 0, sizeof(struct mxser_mon)); | |
600 | info->err_shadow = 0; | |
601 | spin_lock_init(&info->slock); | |
602 | } | |
603 | /* | |
604 | * Allocate the IRQ if necessary | |
605 | */ | |
606 | ||
607 | ||
608 | /* before set INT ISR, disable all int */ | |
609 | for (i = 0; i < hwconf->ports; i++) { | |
8ea2c2ec JJ |
610 | outb(inb(hwconf->ioaddr[i] + UART_IER) & 0xf0, |
611 | hwconf->ioaddr[i] + UART_IER); | |
1da177e4 LT |
612 | } |
613 | ||
614 | n = board * MXSER_PORTS_PER_BOARD; | |
615 | info = &mxvar_table[n]; | |
616 | ||
8ea2c2ec JJ |
617 | retval = request_irq(hwconf->irq, mxser_interrupt, IRQ_T(info), |
618 | "mxser", info); | |
1da177e4 | 619 | if (retval) { |
8ea2c2ec JJ |
620 | printk(KERN_ERR "Board %d: %s", |
621 | board, mxser_brdname[hwconf->board_type - 1]); | |
622 | printk(" Request irq failed, IRQ (%d) may conflict with" | |
623 | " another device.\n", info->irq); | |
1da177e4 LT |
624 | return retval; |
625 | } | |
626 | return 0; | |
627 | } | |
628 | ||
1da177e4 LT |
629 | static void mxser_getcfg(int board, struct mxser_hwconf *hwconf) |
630 | { | |
631 | mxsercfg[board] = *hwconf; | |
632 | } | |
633 | ||
634 | #ifdef CONFIG_PCI | |
635 | static int mxser_get_PCI_conf(int busnum, int devnum, int board_type, struct mxser_hwconf *hwconf) | |
636 | { | |
637 | int i, j; | |
8ea2c2ec | 638 | /* unsigned int val; */ |
1da177e4 LT |
639 | unsigned int ioaddress; |
640 | struct pci_dev *pdev = hwconf->pciInfo.pdev; | |
641 | ||
8ea2c2ec | 642 | /* io address */ |
1da177e4 LT |
643 | hwconf->board_type = board_type; |
644 | hwconf->ports = mxser_numports[board_type - 1]; | |
645 | ioaddress = pci_resource_start(pdev, 2); | |
8ea2c2ec JJ |
646 | request_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2), |
647 | "mxser(IO)"); | |
1da177e4 | 648 | |
8ea2c2ec | 649 | for (i = 0; i < hwconf->ports; i++) |
1da177e4 | 650 | hwconf->ioaddr[i] = ioaddress + 8 * i; |
1da177e4 | 651 | |
8ea2c2ec | 652 | /* vector */ |
1da177e4 | 653 | ioaddress = pci_resource_start(pdev, 3); |
8ea2c2ec JJ |
654 | request_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3), |
655 | "mxser(vector)"); | |
1da177e4 LT |
656 | hwconf->vector = ioaddress; |
657 | ||
8ea2c2ec | 658 | /* irq */ |
1da177e4 LT |
659 | hwconf->irq = hwconf->pciInfo.pdev->irq; |
660 | ||
661 | hwconf->IsMoxaMustChipFlag = CheckIsMoxaMust(hwconf->ioaddr[0]); | |
662 | hwconf->uart_type = PORT_16550A; | |
663 | hwconf->vector_mask = 0; | |
664 | ||
665 | ||
666 | for (i = 0; i < hwconf->ports; i++) { | |
667 | for (j = 0; j < UART_INFO_NUM; j++) { | |
668 | if (Gpci_uart_info[j].type == hwconf->IsMoxaMustChipFlag) { | |
669 | hwconf->MaxCanSetBaudRate[i] = Gpci_uart_info[j].max_baud; | |
670 | ||
8ea2c2ec | 671 | /* exception....CP-102 */ |
1da177e4 LT |
672 | if (board_type == MXSER_BOARD_CP102) |
673 | hwconf->MaxCanSetBaudRate[i] = 921600; | |
674 | break; | |
675 | } | |
676 | } | |
677 | } | |
678 | ||
679 | if (hwconf->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID) { | |
680 | for (i = 0; i < hwconf->ports; i++) { | |
681 | if (i < 4) | |
682 | hwconf->opmode_ioaddr[i] = ioaddress + 4; | |
683 | else | |
684 | hwconf->opmode_ioaddr[i] = ioaddress + 0x0c; | |
685 | } | |
8ea2c2ec JJ |
686 | outb(0, ioaddress + 4); /* default set to RS232 mode */ |
687 | outb(0, ioaddress + 0x0c); /* default set to RS232 mode */ | |
1da177e4 LT |
688 | } |
689 | ||
690 | for (i = 0; i < hwconf->ports; i++) { | |
691 | hwconf->vector_mask |= (1 << i); | |
692 | hwconf->baud_base[i] = 921600; | |
693 | } | |
8ea2c2ec | 694 | return 0; |
1da177e4 LT |
695 | } |
696 | #endif | |
697 | ||
698 | static int mxser_init(void) | |
699 | { | |
700 | int i, m, retval, b, n; | |
1da177e4 LT |
701 | struct pci_dev *pdev = NULL; |
702 | int index; | |
703 | unsigned char busnum, devnum; | |
704 | struct mxser_hwconf hwconf; | |
705 | ||
706 | mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); | |
707 | if (!mxvar_sdriver) | |
708 | return -ENOMEM; | |
709 | spin_lock_init(&gm_lock); | |
710 | ||
711 | for (i = 0; i < MXSER_BOARDS; i++) { | |
712 | mxsercfg[i].board_type = -1; | |
713 | } | |
714 | ||
8ea2c2ec JJ |
715 | printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", |
716 | MXSER_VERSION); | |
1da177e4 LT |
717 | |
718 | /* Initialize the tty_driver structure */ | |
719 | memset(mxvar_sdriver, 0, sizeof(struct tty_driver)); | |
720 | mxvar_sdriver->magic = TTY_DRIVER_MAGIC; | |
ae25f8ec | 721 | mxvar_sdriver->name = "ttyMI"; |
1da177e4 LT |
722 | mxvar_sdriver->major = ttymajor; |
723 | mxvar_sdriver->minor_start = 0; | |
724 | mxvar_sdriver->num = MXSER_PORTS + 1; | |
725 | mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL; | |
726 | mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL; | |
727 | mxvar_sdriver->init_termios = tty_std_termios; | |
8ea2c2ec | 728 | mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; |
606d099c AC |
729 | mxvar_sdriver->init_termios.c_ispeed = 9600; |
730 | mxvar_sdriver->init_termios.c_ospeed = 9600; | |
1da177e4 LT |
731 | mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW; |
732 | tty_set_operations(mxvar_sdriver, &mxser_ops); | |
733 | mxvar_sdriver->ttys = mxvar_tty; | |
734 | mxvar_sdriver->termios = mxvar_termios; | |
735 | mxvar_sdriver->termios_locked = mxvar_termios_locked; | |
736 | ||
1da177e4 LT |
737 | mxvar_diagflag = 0; |
738 | memset(mxvar_table, 0, MXSER_PORTS * sizeof(struct mxser_struct)); | |
739 | memset(&mxvar_log, 0, sizeof(struct mxser_log)); | |
740 | ||
741 | memset(&mxser_msr, 0, sizeof(unsigned char) * (MXSER_PORTS + 1)); | |
742 | memset(&mon_data_ext, 0, sizeof(struct mxser_mon_ext)); | |
743 | memset(&mxser_set_baud_method, 0, sizeof(int) * (MXSER_PORTS + 1)); | |
744 | memset(&hwconf, 0, sizeof(struct mxser_hwconf)); | |
745 | ||
746 | m = 0; | |
747 | /* Start finding ISA boards here */ | |
748 | for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { | |
749 | int cap; | |
8ea2c2ec | 750 | |
1da177e4 LT |
751 | if (!(cap = mxserBoardCAP[b])) |
752 | continue; | |
753 | ||
754 | retval = mxser_get_ISA_conf(cap, &hwconf); | |
755 | ||
756 | if (retval != 0) | |
8ea2c2ec JJ |
757 | printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", |
758 | mxser_brdname[hwconf.board_type - 1], ioaddr[b]); | |
1da177e4 LT |
759 | |
760 | if (retval <= 0) { | |
761 | if (retval == MXSER_ERR_IRQ) | |
8ea2c2ec JJ |
762 | printk(KERN_ERR "Invalid interrupt number, " |
763 | "board not configured\n"); | |
1da177e4 | 764 | else if (retval == MXSER_ERR_IRQ_CONFLIT) |
8ea2c2ec JJ |
765 | printk(KERN_ERR "Invalid interrupt number, " |
766 | "board not configured\n"); | |
1da177e4 | 767 | else if (retval == MXSER_ERR_VECTOR) |
8ea2c2ec JJ |
768 | printk(KERN_ERR "Invalid interrupt vector, " |
769 | "board not configured\n"); | |
1da177e4 | 770 | else if (retval == MXSER_ERR_IOADDR) |
8ea2c2ec JJ |
771 | printk(KERN_ERR "Invalid I/O address, " |
772 | "board not configured\n"); | |
1da177e4 LT |
773 | |
774 | continue; | |
775 | } | |
776 | ||
777 | hwconf.pciInfo.busNum = 0; | |
778 | hwconf.pciInfo.devNum = 0; | |
779 | hwconf.pciInfo.pdev = NULL; | |
780 | ||
781 | mxser_getcfg(m, &hwconf); | |
8ea2c2ec JJ |
782 | /* |
783 | * init mxsercfg first, | |
784 | * or mxsercfg data is not correct on ISR. | |
785 | */ | |
786 | /* mxser_initbrd will hook ISR. */ | |
1da177e4 LT |
787 | if (mxser_initbrd(m, &hwconf) < 0) |
788 | continue; | |
789 | ||
1da177e4 LT |
790 | m++; |
791 | } | |
792 | ||
793 | /* Start finding ISA boards from module arg */ | |
794 | for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { | |
795 | int cap; | |
8ea2c2ec | 796 | |
1da177e4 LT |
797 | if (!(cap = ioaddr[b])) |
798 | continue; | |
799 | ||
800 | retval = mxser_get_ISA_conf(cap, &hwconf); | |
801 | ||
802 | if (retval != 0) | |
8ea2c2ec JJ |
803 | printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", |
804 | mxser_brdname[hwconf.board_type - 1], ioaddr[b]); | |
1da177e4 LT |
805 | |
806 | if (retval <= 0) { | |
807 | if (retval == MXSER_ERR_IRQ) | |
8ea2c2ec JJ |
808 | printk(KERN_ERR "Invalid interrupt number, " |
809 | "board not configured\n"); | |
1da177e4 | 810 | else if (retval == MXSER_ERR_IRQ_CONFLIT) |
8ea2c2ec JJ |
811 | printk(KERN_ERR "Invalid interrupt number, " |
812 | "board not configured\n"); | |
1da177e4 | 813 | else if (retval == MXSER_ERR_VECTOR) |
8ea2c2ec JJ |
814 | printk(KERN_ERR "Invalid interrupt vector, " |
815 | "board not configured\n"); | |
1da177e4 | 816 | else if (retval == MXSER_ERR_IOADDR) |
8ea2c2ec JJ |
817 | printk(KERN_ERR "Invalid I/O address, " |
818 | "board not configured\n"); | |
1da177e4 LT |
819 | |
820 | continue; | |
821 | } | |
822 | ||
823 | hwconf.pciInfo.busNum = 0; | |
824 | hwconf.pciInfo.devNum = 0; | |
825 | hwconf.pciInfo.pdev = NULL; | |
826 | ||
827 | mxser_getcfg(m, &hwconf); | |
8ea2c2ec JJ |
828 | /* |
829 | * init mxsercfg first, | |
830 | * or mxsercfg data is not correct on ISR. | |
831 | */ | |
832 | /* mxser_initbrd will hook ISR. */ | |
1da177e4 LT |
833 | if (mxser_initbrd(m, &hwconf) < 0) |
834 | continue; | |
835 | ||
836 | m++; | |
837 | } | |
838 | ||
839 | /* start finding PCI board here */ | |
840 | #ifdef CONFIG_PCI | |
fe971071 | 841 | n = ARRAY_SIZE(mxser_pcibrds) - 1; |
1da177e4 LT |
842 | index = 0; |
843 | b = 0; | |
844 | while (b < n) { | |
1187ece3 | 845 | pdev = pci_get_device(mxser_pcibrds[b].vendor, |
8ea2c2ec | 846 | mxser_pcibrds[b].device, pdev); |
1187ece3 | 847 | if (pdev == NULL) { |
1da177e4 LT |
848 | b++; |
849 | continue; | |
850 | } | |
851 | hwconf.pciInfo.busNum = busnum = pdev->bus->number; | |
852 | hwconf.pciInfo.devNum = devnum = PCI_SLOT(pdev->devfn) << 3; | |
853 | hwconf.pciInfo.pdev = pdev; | |
8ea2c2ec JJ |
854 | printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n", |
855 | mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1], | |
856 | busnum, devnum >> 3); | |
1da177e4 | 857 | index++; |
8ea2c2ec JJ |
858 | if (m >= MXSER_BOARDS) |
859 | printk(KERN_ERR | |
860 | "Too many Smartio/Industio family boards find " | |
861 | "(maximum %d), board not configured\n", | |
862 | MXSER_BOARDS); | |
863 | else { | |
1da177e4 | 864 | if (pci_enable_device(pdev)) { |
8ea2c2ec JJ |
865 | printk(KERN_ERR "Moxa SmartI/O PCI enable " |
866 | "fail !\n"); | |
1da177e4 LT |
867 | continue; |
868 | } | |
8ea2c2ec JJ |
869 | retval = mxser_get_PCI_conf(busnum, devnum, |
870 | (int)mxser_pcibrds[b].driver_data, | |
871 | &hwconf); | |
1da177e4 LT |
872 | if (retval < 0) { |
873 | if (retval == MXSER_ERR_IRQ) | |
8ea2c2ec JJ |
874 | printk(KERN_ERR |
875 | "Invalid interrupt number, " | |
876 | "board not configured\n"); | |
1da177e4 | 877 | else if (retval == MXSER_ERR_IRQ_CONFLIT) |
8ea2c2ec JJ |
878 | printk(KERN_ERR |
879 | "Invalid interrupt number, " | |
880 | "board not configured\n"); | |
1da177e4 | 881 | else if (retval == MXSER_ERR_VECTOR) |
8ea2c2ec JJ |
882 | printk(KERN_ERR |
883 | "Invalid interrupt vector, " | |
884 | "board not configured\n"); | |
1da177e4 | 885 | else if (retval == MXSER_ERR_IOADDR) |
8ea2c2ec JJ |
886 | printk(KERN_ERR |
887 | "Invalid I/O address, " | |
888 | "board not configured\n"); | |
1da177e4 LT |
889 | continue; |
890 | } | |
891 | mxser_getcfg(m, &hwconf); | |
8ea2c2ec JJ |
892 | /* init mxsercfg first, |
893 | * or mxsercfg data is not correct on ISR. | |
894 | */ | |
895 | /* mxser_initbrd will hook ISR. */ | |
1da177e4 LT |
896 | if (mxser_initbrd(m, &hwconf) < 0) |
897 | continue; | |
898 | m++; | |
1187ece3 AC |
899 | /* Keep an extra reference if we succeeded. It will |
900 | be returned at unload time */ | |
901 | pci_dev_get(pdev); | |
1da177e4 LT |
902 | } |
903 | } | |
904 | #endif | |
905 | ||
64698b69 KS |
906 | retval = tty_register_driver(mxvar_sdriver); |
907 | if (retval) { | |
8ea2c2ec JJ |
908 | printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family" |
909 | " driver !\n"); | |
64698b69 | 910 | put_tty_driver(mxvar_sdriver); |
1da177e4 | 911 | |
1da177e4 LT |
912 | for (i = 0; i < MXSER_BOARDS; i++) { |
913 | if (mxsercfg[i].board_type == -1) | |
914 | continue; | |
915 | else { | |
916 | free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]); | |
8ea2c2ec | 917 | /* todo: release io, vector */ |
1da177e4 LT |
918 | } |
919 | } | |
64698b69 | 920 | return retval; |
1da177e4 LT |
921 | } |
922 | ||
64698b69 | 923 | return 0; |
1da177e4 LT |
924 | } |
925 | ||
c4028958 | 926 | static void mxser_do_softint(struct work_struct *work) |
1da177e4 | 927 | { |
c4028958 DH |
928 | struct mxser_struct *info = |
929 | container_of(work, struct mxser_struct, tqueue); | |
1da177e4 LT |
930 | struct tty_struct *tty; |
931 | ||
932 | tty = info->tty; | |
933 | ||
934 | if (tty) { | |
935 | if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event)) | |
936 | tty_wakeup(tty); | |
937 | if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event)) | |
938 | tty_hangup(tty); | |
939 | } | |
940 | } | |
941 | ||
942 | static unsigned char mxser_get_msr(int baseaddr, int mode, int port, struct mxser_struct *info) | |
943 | { | |
944 | unsigned char status = 0; | |
945 | ||
946 | status = inb(baseaddr + UART_MSR); | |
947 | ||
948 | mxser_msr[port] &= 0x0F; | |
949 | mxser_msr[port] |= status; | |
950 | status = mxser_msr[port]; | |
951 | if (mode) | |
952 | mxser_msr[port] = 0; | |
953 | ||
954 | return status; | |
955 | } | |
956 | ||
957 | /* | |
958 | * This routine is called whenever a serial port is opened. It | |
959 | * enables interrupts for a serial port, linking in its async structure into | |
960 | * the IRQ chain. It also performs the serial-specific | |
961 | * initialization for the tty structure. | |
962 | */ | |
963 | static int mxser_open(struct tty_struct *tty, struct file *filp) | |
964 | { | |
965 | struct mxser_struct *info; | |
966 | int retval, line; | |
967 | ||
6f08b72c KS |
968 | /* initialize driver_data in case something fails */ |
969 | tty->driver_data = NULL; | |
970 | ||
1da177e4 LT |
971 | line = tty->index; |
972 | if (line == MXSER_PORTS) | |
973 | return 0; | |
974 | if (line < 0 || line > MXSER_PORTS) | |
975 | return -ENODEV; | |
976 | info = mxvar_table + line; | |
977 | if (!info->base) | |
8ea2c2ec | 978 | return -ENODEV; |
1da177e4 LT |
979 | |
980 | tty->driver_data = info; | |
981 | info->tty = tty; | |
982 | /* | |
983 | * Start up serial port | |
984 | */ | |
985 | retval = mxser_startup(info); | |
986 | if (retval) | |
8ea2c2ec | 987 | return retval; |
1da177e4 LT |
988 | |
989 | retval = mxser_block_til_ready(tty, filp, info); | |
990 | if (retval) | |
8ea2c2ec | 991 | return retval; |
1da177e4 LT |
992 | |
993 | info->count++; | |
994 | ||
995 | if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) { | |
996 | if (tty->driver->subtype == SERIAL_TYPE_NORMAL) | |
997 | *tty->termios = info->normal_termios; | |
998 | else | |
999 | *tty->termios = info->callout_termios; | |
1000 | mxser_change_speed(info, NULL); | |
1001 | } | |
1002 | ||
937949d9 | 1003 | info->session = process_session(current); |
1da177e4 | 1004 | info->pgrp = process_group(current); |
1da177e4 | 1005 | |
8ea2c2ec JJ |
1006 | /* |
1007 | status = mxser_get_msr(info->base, 0, info->port); | |
1008 | mxser_check_modem_status(info, status); | |
1009 | */ | |
1da177e4 | 1010 | |
8ea2c2ec | 1011 | /* unmark here for very high baud rate (ex. 921600 bps) used */ |
1da177e4 LT |
1012 | tty->low_latency = 1; |
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | /* | |
1017 | * This routine is called when the serial port gets closed. First, we | |
1018 | * wait for the last remaining data to be sent. Then, we unlink its | |
1019 | * async structure from the interrupt chain if necessary, and we free | |
1020 | * that IRQ if nothing is left in the chain. | |
1021 | */ | |
1022 | static void mxser_close(struct tty_struct *tty, struct file *filp) | |
1023 | { | |
56e139f6 | 1024 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1025 | |
1026 | unsigned long timeout; | |
1027 | unsigned long flags; | |
1028 | struct tty_ldisc *ld; | |
1029 | ||
1030 | if (tty->index == MXSER_PORTS) | |
1031 | return; | |
1032 | if (!info) | |
6f08b72c | 1033 | return; |
1da177e4 LT |
1034 | |
1035 | spin_lock_irqsave(&info->slock, flags); | |
1036 | ||
1037 | if (tty_hung_up_p(filp)) { | |
1038 | spin_unlock_irqrestore(&info->slock, flags); | |
1039 | return; | |
1040 | } | |
1041 | if ((tty->count == 1) && (info->count != 1)) { | |
1042 | /* | |
1043 | * Uh, oh. tty->count is 1, which means that the tty | |
1044 | * structure will be freed. Info->count should always | |
1045 | * be one in these conditions. If it's greater than | |
1046 | * one, we've got real problems, since it means the | |
1047 | * serial port won't be shutdown. | |
1048 | */ | |
8ea2c2ec JJ |
1049 | printk(KERN_ERR "mxser_close: bad serial port count; " |
1050 | "tty->count is 1, info->count is %d\n", info->count); | |
1da177e4 LT |
1051 | info->count = 1; |
1052 | } | |
1053 | if (--info->count < 0) { | |
8ea2c2ec JJ |
1054 | printk(KERN_ERR "mxser_close: bad serial port count for " |
1055 | "ttys%d: %d\n", info->port, info->count); | |
1da177e4 LT |
1056 | info->count = 0; |
1057 | } | |
1058 | if (info->count) { | |
1059 | spin_unlock_irqrestore(&info->slock, flags); | |
1060 | return; | |
1061 | } | |
1062 | info->flags |= ASYNC_CLOSING; | |
1063 | spin_unlock_irqrestore(&info->slock, flags); | |
1064 | /* | |
1065 | * Save the termios structure, since this port may have | |
1066 | * separate termios for callout and dialin. | |
1067 | */ | |
1068 | if (info->flags & ASYNC_NORMAL_ACTIVE) | |
1069 | info->normal_termios = *tty->termios; | |
1070 | /* | |
1071 | * Now we wait for the transmit buffer to clear; and we notify | |
1072 | * the line discipline to only process XON/XOFF characters. | |
1073 | */ | |
1074 | tty->closing = 1; | |
1075 | if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) | |
1076 | tty_wait_until_sent(tty, info->closing_wait); | |
1077 | /* | |
1078 | * At this point we stop accepting input. To do this, we | |
1079 | * disable the receive line status interrupts, and tell the | |
1080 | * interrupt driver to stop checking the data ready bit in the | |
1081 | * line status register. | |
1082 | */ | |
1083 | info->IER &= ~UART_IER_RLSI; | |
1084 | if (info->IsMoxaMustChipFlag) | |
1085 | info->IER &= ~MOXA_MUST_RECV_ISR; | |
1086 | /* by William | |
1087 | info->read_status_mask &= ~UART_LSR_DR; | |
1088 | */ | |
1089 | if (info->flags & ASYNC_INITIALIZED) { | |
1090 | outb(info->IER, info->base + UART_IER); | |
1091 | /* | |
1092 | * Before we drop DTR, make sure the UART transmitter | |
1093 | * has completely drained; this is especially | |
1094 | * important if there is a transmit FIFO! | |
1095 | */ | |
1096 | timeout = jiffies + HZ; | |
1097 | while (!(inb(info->base + UART_LSR) & UART_LSR_TEMT)) { | |
da4cd8df | 1098 | schedule_timeout_interruptible(5); |
1da177e4 LT |
1099 | if (time_after(jiffies, timeout)) |
1100 | break; | |
1101 | } | |
1102 | } | |
1103 | mxser_shutdown(info); | |
1104 | ||
1105 | if (tty->driver->flush_buffer) | |
1106 | tty->driver->flush_buffer(tty); | |
1107 | ||
1108 | ld = tty_ldisc_ref(tty); | |
1109 | if (ld) { | |
8ea2c2ec | 1110 | if (ld->flush_buffer) |
1da177e4 LT |
1111 | ld->flush_buffer(tty); |
1112 | tty_ldisc_deref(ld); | |
1113 | } | |
1114 | ||
1115 | tty->closing = 0; | |
1116 | info->event = 0; | |
1117 | info->tty = NULL; | |
1118 | if (info->blocked_open) { | |
da4cd8df NA |
1119 | if (info->close_delay) |
1120 | schedule_timeout_interruptible(info->close_delay); | |
1da177e4 LT |
1121 | wake_up_interruptible(&info->open_wait); |
1122 | } | |
1123 | ||
1124 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); | |
1125 | wake_up_interruptible(&info->close_wait); | |
1126 | ||
1127 | } | |
1128 | ||
1129 | static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1130 | { | |
1131 | int c, total = 0; | |
56e139f6 | 1132 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1133 | unsigned long flags; |
1134 | ||
8a7f7c93 | 1135 | if (!info->xmit_buf) |
8ea2c2ec | 1136 | return 0; |
1da177e4 LT |
1137 | |
1138 | while (1) { | |
8ea2c2ec JJ |
1139 | c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, |
1140 | SERIAL_XMIT_SIZE - info->xmit_head)); | |
1da177e4 LT |
1141 | if (c <= 0) |
1142 | break; | |
1143 | ||
1144 | memcpy(info->xmit_buf + info->xmit_head, buf, c); | |
1145 | spin_lock_irqsave(&info->slock, flags); | |
8ea2c2ec JJ |
1146 | info->xmit_head = (info->xmit_head + c) & |
1147 | (SERIAL_XMIT_SIZE - 1); | |
1da177e4 LT |
1148 | info->xmit_cnt += c; |
1149 | spin_unlock_irqrestore(&info->slock, flags); | |
1150 | ||
1151 | buf += c; | |
1152 | count -= c; | |
1153 | total += c; | |
1da177e4 LT |
1154 | } |
1155 | ||
1156 | if (info->xmit_cnt && !tty->stopped && !(info->IER & UART_IER_THRI)) { | |
8ea2c2ec JJ |
1157 | if (!tty->hw_stopped || |
1158 | (info->type == PORT_16550A) || | |
1159 | (info->IsMoxaMustChipFlag)) { | |
1da177e4 LT |
1160 | spin_lock_irqsave(&info->slock, flags); |
1161 | info->IER |= UART_IER_THRI; | |
1162 | outb(info->IER, info->base + UART_IER); | |
1163 | spin_unlock_irqrestore(&info->slock, flags); | |
1164 | } | |
1165 | } | |
1166 | return total; | |
1167 | } | |
1168 | ||
1169 | static void mxser_put_char(struct tty_struct *tty, unsigned char ch) | |
1170 | { | |
56e139f6 | 1171 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1172 | unsigned long flags; |
1173 | ||
8a7f7c93 | 1174 | if (!info->xmit_buf) |
1da177e4 LT |
1175 | return; |
1176 | ||
1177 | if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) | |
1178 | return; | |
1179 | ||
1180 | spin_lock_irqsave(&info->slock, flags); | |
1181 | info->xmit_buf[info->xmit_head++] = ch; | |
1182 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; | |
1183 | info->xmit_cnt++; | |
1184 | spin_unlock_irqrestore(&info->slock, flags); | |
1185 | if (!tty->stopped && !(info->IER & UART_IER_THRI)) { | |
8ea2c2ec JJ |
1186 | if (!tty->hw_stopped || |
1187 | (info->type == PORT_16550A) || | |
1188 | info->IsMoxaMustChipFlag) { | |
1da177e4 LT |
1189 | spin_lock_irqsave(&info->slock, flags); |
1190 | info->IER |= UART_IER_THRI; | |
1191 | outb(info->IER, info->base + UART_IER); | |
1192 | spin_unlock_irqrestore(&info->slock, flags); | |
1193 | } | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | ||
1198 | static void mxser_flush_chars(struct tty_struct *tty) | |
1199 | { | |
56e139f6 | 1200 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1201 | unsigned long flags; |
1202 | ||
8ea2c2ec JJ |
1203 | if (info->xmit_cnt <= 0 || |
1204 | tty->stopped || | |
1205 | !info->xmit_buf || | |
1206 | (tty->hw_stopped && | |
1207 | (info->type != PORT_16550A) && | |
1208 | (!info->IsMoxaMustChipFlag) | |
1209 | )) | |
1da177e4 LT |
1210 | return; |
1211 | ||
1212 | spin_lock_irqsave(&info->slock, flags); | |
1213 | ||
1214 | info->IER |= UART_IER_THRI; | |
1215 | outb(info->IER, info->base + UART_IER); | |
1216 | ||
1217 | spin_unlock_irqrestore(&info->slock, flags); | |
1218 | } | |
1219 | ||
1220 | static int mxser_write_room(struct tty_struct *tty) | |
1221 | { | |
56e139f6 | 1222 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1223 | int ret; |
1224 | ||
1225 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1226 | if (ret < 0) | |
1227 | ret = 0; | |
8ea2c2ec | 1228 | return ret; |
1da177e4 LT |
1229 | } |
1230 | ||
1231 | static int mxser_chars_in_buffer(struct tty_struct *tty) | |
1232 | { | |
56e139f6 | 1233 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1234 | return info->xmit_cnt; |
1235 | } | |
1236 | ||
1237 | static void mxser_flush_buffer(struct tty_struct *tty) | |
1238 | { | |
56e139f6 | 1239 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1240 | char fcr; |
1241 | unsigned long flags; | |
1242 | ||
1243 | ||
1244 | spin_lock_irqsave(&info->slock, flags); | |
1245 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1246 | ||
1247 | /* below added by shinhay */ | |
1248 | fcr = inb(info->base + UART_FCR); | |
8ea2c2ec JJ |
1249 | outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), |
1250 | info->base + UART_FCR); | |
1da177e4 LT |
1251 | outb(fcr, info->base + UART_FCR); |
1252 | ||
1253 | spin_unlock_irqrestore(&info->slock, flags); | |
1254 | /* above added by shinhay */ | |
1255 | ||
1256 | wake_up_interruptible(&tty->write_wait); | |
1257 | if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) | |
1258 | (tty->ldisc.write_wakeup) (tty); | |
1259 | } | |
1260 | ||
1261 | static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1262 | { | |
56e139f6 | 1263 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1264 | int retval; |
1265 | struct async_icount cprev, cnow; /* kernel counter temps */ | |
1266 | struct serial_icounter_struct __user *p_cuser; | |
1267 | unsigned long templ; | |
1268 | unsigned long flags; | |
1269 | void __user *argp = (void __user *)arg; | |
1270 | ||
1271 | if (tty->index == MXSER_PORTS) | |
8ea2c2ec | 1272 | return mxser_ioctl_special(cmd, argp); |
1da177e4 | 1273 | |
8ea2c2ec | 1274 | /* following add by Victor Yu. 01-05-2004 */ |
1da177e4 LT |
1275 | if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { |
1276 | int opmode, p; | |
1277 | static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f }; | |
1278 | int shiftbit; | |
1279 | unsigned char val, mask; | |
1280 | ||
1281 | p = info->port % 4; | |
1282 | if (cmd == MOXA_SET_OP_MODE) { | |
1283 | if (get_user(opmode, (int __user *) argp)) | |
1284 | return -EFAULT; | |
8ea2c2ec JJ |
1285 | if (opmode != RS232_MODE && |
1286 | opmode != RS485_2WIRE_MODE && | |
1287 | opmode != RS422_MODE && | |
1288 | opmode != RS485_4WIRE_MODE) | |
1da177e4 LT |
1289 | return -EFAULT; |
1290 | mask = ModeMask[p]; | |
1291 | shiftbit = p * 2; | |
1292 | val = inb(info->opmode_ioaddr); | |
1293 | val &= mask; | |
1294 | val |= (opmode << shiftbit); | |
1295 | outb(val, info->opmode_ioaddr); | |
1296 | } else { | |
1297 | shiftbit = p * 2; | |
1298 | opmode = inb(info->opmode_ioaddr) >> shiftbit; | |
1299 | opmode &= OP_MODE_MASK; | |
1300 | if (copy_to_user(argp, &opmode, sizeof(int))) | |
1301 | return -EFAULT; | |
1302 | } | |
1303 | return 0; | |
1304 | } | |
8ea2c2ec | 1305 | /* above add by Victor Yu. 01-05-2004 */ |
1da177e4 LT |
1306 | |
1307 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { | |
1308 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
8ea2c2ec | 1309 | return -EIO; |
1da177e4 LT |
1310 | } |
1311 | switch (cmd) { | |
1312 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | |
1313 | retval = tty_check_change(tty); | |
1314 | if (retval) | |
8ea2c2ec | 1315 | return retval; |
1da177e4 LT |
1316 | tty_wait_until_sent(tty, 0); |
1317 | if (!arg) | |
1318 | mxser_send_break(info, HZ / 4); /* 1/4 second */ | |
8ea2c2ec | 1319 | return 0; |
1da177e4 LT |
1320 | case TCSBRKP: /* support for POSIX tcsendbreak() */ |
1321 | retval = tty_check_change(tty); | |
1322 | if (retval) | |
8ea2c2ec | 1323 | return retval; |
1da177e4 LT |
1324 | tty_wait_until_sent(tty, 0); |
1325 | mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4); | |
8ea2c2ec | 1326 | return 0; |
1da177e4 | 1327 | case TIOCGSOFTCAR: |
8ea2c2ec | 1328 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); |
1da177e4 LT |
1329 | case TIOCSSOFTCAR: |
1330 | if (get_user(templ, (unsigned long __user *) argp)) | |
1331 | return -EFAULT; | |
1332 | arg = templ; | |
1333 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); | |
8ea2c2ec | 1334 | return 0; |
1da177e4 LT |
1335 | case TIOCGSERIAL: |
1336 | return mxser_get_serial_info(info, argp); | |
1337 | case TIOCSSERIAL: | |
1338 | return mxser_set_serial_info(info, argp); | |
1339 | case TIOCSERGETLSR: /* Get line status register */ | |
1340 | return mxser_get_lsr_info(info, argp); | |
1341 | /* | |
1342 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1343 | * - mask passed in arg for lines of interest | |
1344 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1345 | * Caller should use TIOCGICOUNT to see which one it was | |
1346 | */ | |
8ea2c2ec | 1347 | case TIOCMIWAIT: { |
1da177e4 LT |
1348 | DECLARE_WAITQUEUE(wait, current); |
1349 | int ret; | |
1350 | spin_lock_irqsave(&info->slock, flags); | |
1351 | cprev = info->icount; /* note the counters on entry */ | |
1352 | spin_unlock_irqrestore(&info->slock, flags); | |
1353 | ||
1354 | add_wait_queue(&info->delta_msr_wait, &wait); | |
1355 | while (1) { | |
1356 | spin_lock_irqsave(&info->slock, flags); | |
1357 | cnow = info->icount; /* atomic copy */ | |
1358 | spin_unlock_irqrestore(&info->slock, flags); | |
1359 | ||
1360 | set_current_state(TASK_INTERRUPTIBLE); | |
8ea2c2ec JJ |
1361 | if (((arg & TIOCM_RNG) && |
1362 | (cnow.rng != cprev.rng)) || | |
1363 | ((arg & TIOCM_DSR) && | |
1364 | (cnow.dsr != cprev.dsr)) || | |
1365 | ((arg & TIOCM_CD) && | |
1366 | (cnow.dcd != cprev.dcd)) || | |
1367 | ((arg & TIOCM_CTS) && | |
1368 | (cnow.cts != cprev.cts))) { | |
1da177e4 LT |
1369 | ret = 0; |
1370 | break; | |
1371 | } | |
1372 | /* see if a signal did it */ | |
1373 | if (signal_pending(current)) { | |
1374 | ret = -ERESTARTSYS; | |
1375 | break; | |
1376 | } | |
1377 | cprev = cnow; | |
1378 | } | |
1379 | current->state = TASK_RUNNING; | |
1380 | remove_wait_queue(&info->delta_msr_wait, &wait); | |
1381 | break; | |
1382 | } | |
1383 | /* NOTREACHED */ | |
1384 | /* | |
1385 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
1386 | * Return: write counters to the user passed counter struct | |
1387 | * NB: both 1->0 and 0->1 transitions are counted except for | |
1388 | * RI where only 0->1 is counted. | |
1389 | */ | |
1390 | case TIOCGICOUNT: | |
1391 | spin_lock_irqsave(&info->slock, flags); | |
1392 | cnow = info->icount; | |
1393 | spin_unlock_irqrestore(&info->slock, flags); | |
1394 | p_cuser = argp; | |
1395 | /* modified by casper 1/11/2000 */ | |
1396 | if (put_user(cnow.frame, &p_cuser->frame)) | |
1397 | return -EFAULT; | |
1398 | if (put_user(cnow.brk, &p_cuser->brk)) | |
1399 | return -EFAULT; | |
1400 | if (put_user(cnow.overrun, &p_cuser->overrun)) | |
1401 | return -EFAULT; | |
1402 | if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun)) | |
1403 | return -EFAULT; | |
1404 | if (put_user(cnow.parity, &p_cuser->parity)) | |
1405 | return -EFAULT; | |
1406 | if (put_user(cnow.rx, &p_cuser->rx)) | |
1407 | return -EFAULT; | |
1408 | if (put_user(cnow.tx, &p_cuser->tx)) | |
1409 | return -EFAULT; | |
1410 | put_user(cnow.cts, &p_cuser->cts); | |
1411 | put_user(cnow.dsr, &p_cuser->dsr); | |
1412 | put_user(cnow.rng, &p_cuser->rng); | |
1413 | put_user(cnow.dcd, &p_cuser->dcd); | |
1da177e4 LT |
1414 | return 0; |
1415 | case MOXA_HighSpeedOn: | |
8ea2c2ec JJ |
1416 | return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp); |
1417 | case MOXA_SDS_RSTICOUNTER: { | |
1da177e4 LT |
1418 | info->mon_data.rxcnt = 0; |
1419 | info->mon_data.txcnt = 0; | |
1420 | return 0; | |
1421 | } | |
8ea2c2ec | 1422 | /* (above) added by James. */ |
1da177e4 LT |
1423 | case MOXA_ASPP_SETBAUD:{ |
1424 | long baud; | |
8ea2c2ec | 1425 | if (get_user(baud, (long __user *)argp)) |
1da177e4 LT |
1426 | return -EFAULT; |
1427 | mxser_set_baud(info, baud); | |
1428 | return 0; | |
1429 | } | |
1430 | case MOXA_ASPP_GETBAUD: | |
1431 | if (copy_to_user(argp, &info->realbaud, sizeof(long))) | |
1432 | return -EFAULT; | |
1433 | ||
1434 | return 0; | |
1435 | ||
1436 | case MOXA_ASPP_OQUEUE:{ | |
1437 | int len, lsr; | |
1438 | ||
1439 | len = mxser_chars_in_buffer(tty); | |
1440 | ||
1441 | lsr = inb(info->base + UART_LSR) & UART_LSR_TEMT; | |
1442 | ||
1443 | len += (lsr ? 0 : 1); | |
1444 | ||
1445 | if (copy_to_user(argp, &len, sizeof(int))) | |
1446 | return -EFAULT; | |
1447 | ||
1448 | return 0; | |
1449 | } | |
8ea2c2ec | 1450 | case MOXA_ASPP_MON: { |
1da177e4 | 1451 | int mcr, status; |
8ea2c2ec JJ |
1452 | |
1453 | /* info->mon_data.ser_param = tty->termios->c_cflag; */ | |
1da177e4 LT |
1454 | |
1455 | status = mxser_get_msr(info->base, 1, info->port, info); | |
1456 | mxser_check_modem_status(info, status); | |
1457 | ||
1458 | mcr = inb(info->base + UART_MCR); | |
1459 | if (mcr & MOXA_MUST_MCR_XON_FLAG) | |
1460 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD; | |
1461 | else | |
1462 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD; | |
1463 | ||
1464 | if (mcr & MOXA_MUST_MCR_TX_XON) | |
1465 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT; | |
1466 | else | |
1467 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT; | |
1468 | ||
1469 | if (info->tty->hw_stopped) | |
1470 | info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; | |
1471 | else | |
1472 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; | |
1473 | ||
8ea2c2ec JJ |
1474 | if (copy_to_user(argp, &info->mon_data, |
1475 | sizeof(struct mxser_mon))) | |
1da177e4 LT |
1476 | return -EFAULT; |
1477 | ||
1478 | return 0; | |
1da177e4 LT |
1479 | } |
1480 | ||
8ea2c2ec JJ |
1481 | case MOXA_ASPP_LSTATUS: { |
1482 | if (copy_to_user(argp, &info->err_shadow, | |
1483 | sizeof(unsigned char))) | |
1da177e4 LT |
1484 | return -EFAULT; |
1485 | ||
1486 | info->err_shadow = 0; | |
1487 | return 0; | |
1da177e4 | 1488 | } |
8ea2c2ec | 1489 | case MOXA_SET_BAUD_METHOD: { |
1da177e4 | 1490 | int method; |
8ea2c2ec JJ |
1491 | |
1492 | if (get_user(method, (int __user *)argp)) | |
1da177e4 LT |
1493 | return -EFAULT; |
1494 | mxser_set_baud_method[info->port] = method; | |
1495 | if (copy_to_user(argp, &method, sizeof(int))) | |
1496 | return -EFAULT; | |
1497 | ||
1498 | return 0; | |
1499 | } | |
1500 | default: | |
1501 | return -ENOIOCTLCMD; | |
1502 | } | |
1503 | return 0; | |
1504 | } | |
1505 | ||
1506 | #ifndef CMSPAR | |
1507 | #define CMSPAR 010000000000 | |
1508 | #endif | |
1509 | ||
1510 | static int mxser_ioctl_special(unsigned int cmd, void __user *argp) | |
1511 | { | |
1512 | int i, result, status; | |
1513 | ||
1514 | switch (cmd) { | |
1515 | case MOXA_GET_CONF: | |
8ea2c2ec JJ |
1516 | if (copy_to_user(argp, mxsercfg, |
1517 | sizeof(struct mxser_hwconf) * 4)) | |
1da177e4 LT |
1518 | return -EFAULT; |
1519 | return 0; | |
1520 | case MOXA_GET_MAJOR: | |
1521 | if (copy_to_user(argp, &ttymajor, sizeof(int))) | |
1522 | return -EFAULT; | |
1523 | return 0; | |
1524 | ||
1525 | case MOXA_GET_CUMAJOR: | |
1526 | if (copy_to_user(argp, &calloutmajor, sizeof(int))) | |
1527 | return -EFAULT; | |
1528 | return 0; | |
1529 | ||
1530 | case MOXA_CHKPORTENABLE: | |
1531 | result = 0; | |
1532 | for (i = 0; i < MXSER_PORTS; i++) { | |
1533 | if (mxvar_table[i].base) | |
1534 | result |= (1 << i); | |
1535 | } | |
8ea2c2ec | 1536 | return put_user(result, (unsigned long __user *)argp); |
1da177e4 LT |
1537 | case MOXA_GETDATACOUNT: |
1538 | if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log))) | |
1539 | return -EFAULT; | |
8ea2c2ec | 1540 | return 0; |
1da177e4 LT |
1541 | case MOXA_GETMSTATUS: |
1542 | for (i = 0; i < MXSER_PORTS; i++) { | |
1543 | GMStatus[i].ri = 0; | |
1544 | if (!mxvar_table[i].base) { | |
1545 | GMStatus[i].dcd = 0; | |
1546 | GMStatus[i].dsr = 0; | |
1547 | GMStatus[i].cts = 0; | |
1548 | continue; | |
1549 | } | |
1550 | ||
1551 | if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios) | |
1552 | GMStatus[i].cflag = mxvar_table[i].normal_termios.c_cflag; | |
1553 | else | |
1554 | GMStatus[i].cflag = mxvar_table[i].tty->termios->c_cflag; | |
1555 | ||
1556 | status = inb(mxvar_table[i].base + UART_MSR); | |
1557 | if (status & 0x80 /*UART_MSR_DCD */ ) | |
1558 | GMStatus[i].dcd = 1; | |
1559 | else | |
1560 | GMStatus[i].dcd = 0; | |
1561 | ||
1562 | if (status & 0x20 /*UART_MSR_DSR */ ) | |
1563 | GMStatus[i].dsr = 1; | |
1564 | else | |
1565 | GMStatus[i].dsr = 0; | |
1566 | ||
1567 | ||
1568 | if (status & 0x10 /*UART_MSR_CTS */ ) | |
1569 | GMStatus[i].cts = 1; | |
1570 | else | |
1571 | GMStatus[i].cts = 0; | |
1572 | } | |
8ea2c2ec JJ |
1573 | if (copy_to_user(argp, GMStatus, |
1574 | sizeof(struct mxser_mstatus) * MXSER_PORTS)) | |
1da177e4 LT |
1575 | return -EFAULT; |
1576 | return 0; | |
8ea2c2ec | 1577 | case MOXA_ASPP_MON_EXT: { |
1da177e4 LT |
1578 | int status; |
1579 | int opmode, p; | |
1580 | int shiftbit; | |
1581 | unsigned cflag, iflag; | |
1582 | ||
1583 | for (i = 0; i < MXSER_PORTS; i++) { | |
1da177e4 LT |
1584 | if (!mxvar_table[i].base) |
1585 | continue; | |
1586 | ||
8ea2c2ec JJ |
1587 | status = mxser_get_msr(mxvar_table[i].base, 0, |
1588 | i, &(mxvar_table[i])); | |
1589 | /* | |
1590 | mxser_check_modem_status(&mxvar_table[i], | |
1591 | status); | |
1592 | */ | |
1da177e4 LT |
1593 | if (status & UART_MSR_TERI) |
1594 | mxvar_table[i].icount.rng++; | |
1595 | if (status & UART_MSR_DDSR) | |
1596 | mxvar_table[i].icount.dsr++; | |
1597 | if (status & UART_MSR_DDCD) | |
1598 | mxvar_table[i].icount.dcd++; | |
1599 | if (status & UART_MSR_DCTS) | |
1600 | mxvar_table[i].icount.cts++; | |
1601 | ||
1602 | mxvar_table[i].mon_data.modem_status = status; | |
1603 | mon_data_ext.rx_cnt[i] = mxvar_table[i].mon_data.rxcnt; | |
1604 | mon_data_ext.tx_cnt[i] = mxvar_table[i].mon_data.txcnt; | |
1605 | mon_data_ext.up_rxcnt[i] = mxvar_table[i].mon_data.up_rxcnt; | |
1606 | mon_data_ext.up_txcnt[i] = mxvar_table[i].mon_data.up_txcnt; | |
1607 | mon_data_ext.modem_status[i] = mxvar_table[i].mon_data.modem_status; | |
1608 | mon_data_ext.baudrate[i] = mxvar_table[i].realbaud; | |
1609 | ||
1610 | if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios) { | |
1611 | cflag = mxvar_table[i].normal_termios.c_cflag; | |
1612 | iflag = mxvar_table[i].normal_termios.c_iflag; | |
1613 | } else { | |
1614 | cflag = mxvar_table[i].tty->termios->c_cflag; | |
1615 | iflag = mxvar_table[i].tty->termios->c_iflag; | |
1616 | } | |
1617 | ||
1618 | mon_data_ext.databits[i] = cflag & CSIZE; | |
1619 | ||
1620 | mon_data_ext.stopbits[i] = cflag & CSTOPB; | |
1621 | ||
1622 | mon_data_ext.parity[i] = cflag & (PARENB | PARODD | CMSPAR); | |
1623 | ||
1624 | mon_data_ext.flowctrl[i] = 0x00; | |
1625 | ||
1626 | if (cflag & CRTSCTS) | |
1627 | mon_data_ext.flowctrl[i] |= 0x03; | |
1628 | ||
1629 | if (iflag & (IXON | IXOFF)) | |
1630 | mon_data_ext.flowctrl[i] |= 0x0C; | |
1631 | ||
1632 | if (mxvar_table[i].type == PORT_16550A) | |
1633 | mon_data_ext.fifo[i] = 1; | |
1634 | else | |
1635 | mon_data_ext.fifo[i] = 0; | |
1636 | ||
1637 | p = i % 4; | |
1638 | shiftbit = p * 2; | |
1639 | opmode = inb(mxvar_table[i].opmode_ioaddr) >> shiftbit; | |
1640 | opmode &= OP_MODE_MASK; | |
1641 | ||
1642 | mon_data_ext.iftype[i] = opmode; | |
1643 | ||
1644 | } | |
1645 | if (copy_to_user(argp, &mon_data_ext, sizeof(struct mxser_mon_ext))) | |
1646 | return -EFAULT; | |
1647 | ||
1648 | return 0; | |
1649 | ||
1650 | } | |
1651 | default: | |
1652 | return -ENOIOCTLCMD; | |
1653 | } | |
1654 | return 0; | |
1655 | } | |
1656 | ||
1da177e4 LT |
1657 | static void mxser_stoprx(struct tty_struct *tty) |
1658 | { | |
56e139f6 | 1659 | struct mxser_struct *info = tty->driver_data; |
8ea2c2ec | 1660 | /* unsigned long flags; */ |
1da177e4 LT |
1661 | |
1662 | info->ldisc_stop_rx = 1; | |
1663 | if (I_IXOFF(tty)) { | |
8ea2c2ec JJ |
1664 | /* MX_LOCK(&info->slock); */ |
1665 | /* following add by Victor Yu. 09-02-2002 */ | |
1da177e4 LT |
1666 | if (info->IsMoxaMustChipFlag) { |
1667 | info->IER &= ~MOXA_MUST_RECV_ISR; | |
1668 | outb(info->IER, info->base + UART_IER); | |
1669 | } else { | |
8ea2c2ec | 1670 | /* above add by Victor Yu. 09-02-2002 */ |
1da177e4 | 1671 | info->x_char = STOP_CHAR(tty); |
8ea2c2ec JJ |
1672 | /* mask by Victor Yu. 09-02-2002 */ |
1673 | /* outb(info->IER, 0); */ | |
1da177e4 LT |
1674 | outb(0, info->base + UART_IER); |
1675 | info->IER |= UART_IER_THRI; | |
8ea2c2ec JJ |
1676 | /* force Tx interrupt */ |
1677 | outb(info->IER, info->base + UART_IER); | |
1678 | } /* add by Victor Yu. 09-02-2002 */ | |
1679 | /* MX_UNLOCK(&info->slock); */ | |
1da177e4 LT |
1680 | } |
1681 | ||
1682 | if (info->tty->termios->c_cflag & CRTSCTS) { | |
8ea2c2ec | 1683 | /* MX_LOCK(&info->slock); */ |
1da177e4 LT |
1684 | info->MCR &= ~UART_MCR_RTS; |
1685 | outb(info->MCR, info->base + UART_MCR); | |
8ea2c2ec | 1686 | /* MX_UNLOCK(&info->slock); */ |
1da177e4 LT |
1687 | } |
1688 | } | |
1689 | ||
1690 | static void mxser_startrx(struct tty_struct *tty) | |
1691 | { | |
56e139f6 | 1692 | struct mxser_struct *info = tty->driver_data; |
8ea2c2ec | 1693 | /* unsigned long flags; */ |
1da177e4 LT |
1694 | |
1695 | info->ldisc_stop_rx = 0; | |
1696 | if (I_IXOFF(tty)) { | |
1697 | if (info->x_char) | |
1698 | info->x_char = 0; | |
1699 | else { | |
8ea2c2ec | 1700 | /* MX_LOCK(&info->slock); */ |
1da177e4 | 1701 | |
8ea2c2ec | 1702 | /* following add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
1703 | if (info->IsMoxaMustChipFlag) { |
1704 | info->IER |= MOXA_MUST_RECV_ISR; | |
1705 | outb(info->IER, info->base + UART_IER); | |
1706 | } else { | |
8ea2c2ec | 1707 | /* above add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
1708 | |
1709 | info->x_char = START_CHAR(tty); | |
8ea2c2ec JJ |
1710 | /* mask by Victor Yu. 09-02-2002 */ |
1711 | /* outb(info->IER, 0); */ | |
1712 | /* add by Victor Yu. 09-02-2002 */ | |
1713 | outb(0, info->base + UART_IER); | |
1714 | /* force Tx interrupt */ | |
1715 | info->IER |= UART_IER_THRI; | |
1da177e4 | 1716 | outb(info->IER, info->base + UART_IER); |
8ea2c2ec JJ |
1717 | } /* add by Victor Yu. 09-02-2002 */ |
1718 | /* MX_UNLOCK(&info->slock); */ | |
1da177e4 LT |
1719 | } |
1720 | } | |
1721 | ||
1722 | if (info->tty->termios->c_cflag & CRTSCTS) { | |
8ea2c2ec | 1723 | /* MX_LOCK(&info->slock); */ |
1da177e4 LT |
1724 | info->MCR |= UART_MCR_RTS; |
1725 | outb(info->MCR, info->base + UART_MCR); | |
8ea2c2ec | 1726 | /* MX_UNLOCK(&info->slock); */ |
1da177e4 LT |
1727 | } |
1728 | } | |
1729 | ||
1730 | /* | |
1731 | * This routine is called by the upper-layer tty layer to signal that | |
1732 | * incoming characters should be throttled. | |
1733 | */ | |
1734 | static void mxser_throttle(struct tty_struct *tty) | |
1735 | { | |
8ea2c2ec JJ |
1736 | /* struct mxser_struct *info = tty->driver_data; */ |
1737 | /* unsigned long flags; */ | |
1738 | ||
1739 | /* MX_LOCK(&info->slock); */ | |
1da177e4 | 1740 | mxser_stoprx(tty); |
8ea2c2ec | 1741 | /* MX_UNLOCK(&info->slock); */ |
1da177e4 LT |
1742 | } |
1743 | ||
1744 | static void mxser_unthrottle(struct tty_struct *tty) | |
1745 | { | |
8ea2c2ec JJ |
1746 | /* struct mxser_struct *info = tty->driver_data; */ |
1747 | /* unsigned long flags; */ | |
1748 | ||
1749 | /* MX_LOCK(&info->slock); */ | |
1da177e4 | 1750 | mxser_startrx(tty); |
8ea2c2ec | 1751 | /* MX_UNLOCK(&info->slock); */ |
1da177e4 LT |
1752 | } |
1753 | ||
606d099c | 1754 | static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 1755 | { |
56e139f6 | 1756 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1757 | unsigned long flags; |
1758 | ||
8ea2c2ec JJ |
1759 | if ((tty->termios->c_cflag != old_termios->c_cflag) || |
1760 | (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) { | |
1da177e4 LT |
1761 | |
1762 | mxser_change_speed(info, old_termios); | |
1763 | ||
8ea2c2ec JJ |
1764 | if ((old_termios->c_cflag & CRTSCTS) && |
1765 | !(tty->termios->c_cflag & CRTSCTS)) { | |
1da177e4 LT |
1766 | tty->hw_stopped = 0; |
1767 | mxser_start(tty); | |
1768 | } | |
1769 | } | |
1770 | ||
1771 | /* Handle sw stopped */ | |
8ea2c2ec JJ |
1772 | if ((old_termios->c_iflag & IXON) && |
1773 | !(tty->termios->c_iflag & IXON)) { | |
1da177e4 LT |
1774 | tty->stopped = 0; |
1775 | ||
8ea2c2ec | 1776 | /* following add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
1777 | if (info->IsMoxaMustChipFlag) { |
1778 | spin_lock_irqsave(&info->slock, flags); | |
1779 | DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | |
1780 | spin_unlock_irqrestore(&info->slock, flags); | |
1781 | } | |
8ea2c2ec | 1782 | /* above add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
1783 | |
1784 | mxser_start(tty); | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | /* | |
1789 | * mxser_stop() and mxser_start() | |
1790 | * | |
1791 | * This routines are called before setting or resetting tty->stopped. | |
1792 | * They enable or disable transmitter interrupts, as necessary. | |
1793 | */ | |
1794 | static void mxser_stop(struct tty_struct *tty) | |
1795 | { | |
56e139f6 | 1796 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1797 | unsigned long flags; |
1798 | ||
1799 | spin_lock_irqsave(&info->slock, flags); | |
1800 | if (info->IER & UART_IER_THRI) { | |
1801 | info->IER &= ~UART_IER_THRI; | |
1802 | outb(info->IER, info->base + UART_IER); | |
1803 | } | |
1804 | spin_unlock_irqrestore(&info->slock, flags); | |
1805 | } | |
1806 | ||
1807 | static void mxser_start(struct tty_struct *tty) | |
1808 | { | |
56e139f6 | 1809 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1810 | unsigned long flags; |
1811 | ||
1812 | spin_lock_irqsave(&info->slock, flags); | |
1813 | if (info->xmit_cnt && info->xmit_buf && !(info->IER & UART_IER_THRI)) { | |
1814 | info->IER |= UART_IER_THRI; | |
1815 | outb(info->IER, info->base + UART_IER); | |
1816 | } | |
1817 | spin_unlock_irqrestore(&info->slock, flags); | |
1818 | } | |
1819 | ||
1820 | /* | |
1821 | * mxser_wait_until_sent() --- wait until the transmitter is empty | |
1822 | */ | |
1823 | static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) | |
1824 | { | |
56e139f6 | 1825 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1826 | unsigned long orig_jiffies, char_time; |
1827 | int lsr; | |
1828 | ||
1829 | if (info->type == PORT_UNKNOWN) | |
1830 | return; | |
1831 | ||
1832 | if (info->xmit_fifo_size == 0) | |
1833 | return; /* Just in case.... */ | |
1834 | ||
1835 | orig_jiffies = jiffies; | |
1836 | /* | |
1837 | * Set the check interval to be 1/5 of the estimated time to | |
1838 | * send a single character, and make it at least 1. The check | |
1839 | * interval should also be less than the timeout. | |
1840 | * | |
1841 | * Note: we have to use pretty tight timings here to satisfy | |
1842 | * the NIST-PCTS. | |
1843 | */ | |
1844 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1845 | char_time = char_time / 5; | |
1846 | if (char_time == 0) | |
1847 | char_time = 1; | |
1848 | if (timeout && timeout < char_time) | |
1849 | char_time = timeout; | |
1850 | /* | |
1851 | * If the transmitter hasn't cleared in twice the approximate | |
1852 | * amount of time to send the entire FIFO, it probably won't | |
1853 | * ever clear. This assumes the UART isn't doing flow | |
1854 | * control, which is currently the case. Hence, if it ever | |
1855 | * takes longer than info->timeout, this is probably due to a | |
1856 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1857 | * 2*info->timeout. | |
1858 | */ | |
1859 | if (!timeout || timeout > 2 * info->timeout) | |
1860 | timeout = 2 * info->timeout; | |
1861 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | |
8ea2c2ec JJ |
1862 | printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...", |
1863 | timeout, char_time); | |
1da177e4 LT |
1864 | printk("jiff=%lu...", jiffies); |
1865 | #endif | |
1866 | while (!((lsr = inb(info->base + UART_LSR)) & UART_LSR_TEMT)) { | |
1867 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | |
1868 | printk("lsr = %d (jiff=%lu)...", lsr, jiffies); | |
1869 | #endif | |
da4cd8df | 1870 | schedule_timeout_interruptible(char_time); |
1da177e4 LT |
1871 | if (signal_pending(current)) |
1872 | break; | |
1873 | if (timeout && time_after(jiffies, orig_jiffies + timeout)) | |
1874 | break; | |
1875 | } | |
1876 | set_current_state(TASK_RUNNING); | |
1877 | ||
1878 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | |
1879 | printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); | |
1880 | #endif | |
1881 | } | |
1882 | ||
1883 | ||
1884 | /* | |
1885 | * This routine is called by tty_hangup() when a hangup is signaled. | |
1886 | */ | |
1887 | void mxser_hangup(struct tty_struct *tty) | |
1888 | { | |
56e139f6 | 1889 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1890 | |
1891 | mxser_flush_buffer(tty); | |
1892 | mxser_shutdown(info); | |
1893 | info->event = 0; | |
1894 | info->count = 0; | |
1895 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
1896 | info->tty = NULL; | |
1897 | wake_up_interruptible(&info->open_wait); | |
1898 | } | |
1899 | ||
1900 | ||
8ea2c2ec | 1901 | /* added by James 03-12-2004. */ |
1da177e4 LT |
1902 | /* |
1903 | * mxser_rs_break() --- routine which turns the break handling on or off | |
1904 | */ | |
1905 | static void mxser_rs_break(struct tty_struct *tty, int break_state) | |
1906 | { | |
56e139f6 | 1907 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
1908 | unsigned long flags; |
1909 | ||
1910 | spin_lock_irqsave(&info->slock, flags); | |
1911 | if (break_state == -1) | |
8ea2c2ec JJ |
1912 | outb(inb(info->base + UART_LCR) | UART_LCR_SBC, |
1913 | info->base + UART_LCR); | |
1da177e4 | 1914 | else |
8ea2c2ec JJ |
1915 | outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC, |
1916 | info->base + UART_LCR); | |
1da177e4 LT |
1917 | spin_unlock_irqrestore(&info->slock, flags); |
1918 | } | |
1919 | ||
8ea2c2ec | 1920 | /* (above) added by James. */ |
1da177e4 LT |
1921 | |
1922 | ||
1923 | /* | |
1924 | * This is the serial driver's generic interrupt routine | |
1925 | */ | |
7d12e780 | 1926 | static irqreturn_t mxser_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1927 | { |
1928 | int status, iir, i; | |
1929 | struct mxser_struct *info; | |
1930 | struct mxser_struct *port; | |
1931 | int max, irqbits, bits, msr; | |
1932 | int pass_counter = 0; | |
1933 | int handled = IRQ_NONE; | |
1934 | ||
1935 | port = NULL; | |
8ea2c2ec | 1936 | /* spin_lock(&gm_lock); */ |
1da177e4 LT |
1937 | |
1938 | for (i = 0; i < MXSER_BOARDS; i++) { | |
1939 | if (dev_id == &(mxvar_table[i * MXSER_PORTS_PER_BOARD])) { | |
1940 | port = dev_id; | |
1941 | break; | |
1942 | } | |
1943 | } | |
1944 | ||
8ea2c2ec | 1945 | if (i == MXSER_BOARDS) |
1da177e4 | 1946 | goto irq_stop; |
8ea2c2ec | 1947 | if (port == 0) |
1da177e4 | 1948 | goto irq_stop; |
1da177e4 LT |
1949 | max = mxser_numports[mxsercfg[i].board_type - 1]; |
1950 | while (1) { | |
1951 | irqbits = inb(port->vector) & port->vectormask; | |
8ea2c2ec | 1952 | if (irqbits == port->vectormask) |
1da177e4 | 1953 | break; |
1da177e4 LT |
1954 | |
1955 | handled = IRQ_HANDLED; | |
1956 | for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) { | |
8ea2c2ec | 1957 | if (irqbits == port->vectormask) |
1da177e4 | 1958 | break; |
1da177e4 LT |
1959 | if (bits & irqbits) |
1960 | continue; | |
1961 | info = port + i; | |
1962 | ||
8ea2c2ec | 1963 | /* following add by Victor Yu. 09-13-2002 */ |
1da177e4 LT |
1964 | iir = inb(info->base + UART_IIR); |
1965 | if (iir & UART_IIR_NO_INT) | |
1966 | continue; | |
1967 | iir &= MOXA_MUST_IIR_MASK; | |
1968 | if (!info->tty) { | |
1969 | status = inb(info->base + UART_LSR); | |
1970 | outb(0x27, info->base + UART_FCR); | |
1971 | inb(info->base + UART_MSR); | |
1972 | continue; | |
1973 | } | |
8ea2c2ec | 1974 | /* above add by Victor Yu. 09-13-2002 */ |
1da177e4 | 1975 | /* |
8ea2c2ec | 1976 | if (info->tty->flip.count < TTY_FLIPBUF_SIZE / 4) { |
1da177e4 LT |
1977 | info->IER |= MOXA_MUST_RECV_ISR; |
1978 | outb(info->IER, info->base + UART_IER); | |
1979 | } | |
1980 | */ | |
1981 | ||
1982 | ||
1983 | /* mask by Victor Yu. 09-13-2002 | |
1984 | if ( !info->tty || | |
1985 | (inb(info->base + UART_IIR) & UART_IIR_NO_INT) ) | |
1986 | continue; | |
1987 | */ | |
1988 | /* mask by Victor Yu. 09-02-2002 | |
1989 | status = inb(info->base + UART_LSR) & info->read_status_mask; | |
1990 | */ | |
1991 | ||
8ea2c2ec | 1992 | /* following add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
1993 | status = inb(info->base + UART_LSR); |
1994 | ||
8ea2c2ec | 1995 | if (status & UART_LSR_PE) |
1da177e4 | 1996 | info->err_shadow |= NPPI_NOTIFY_PARITY; |
8ea2c2ec | 1997 | if (status & UART_LSR_FE) |
1da177e4 | 1998 | info->err_shadow |= NPPI_NOTIFY_FRAMING; |
8ea2c2ec | 1999 | if (status & UART_LSR_OE) |
1da177e4 | 2000 | info->err_shadow |= NPPI_NOTIFY_HW_OVERRUN; |
1da177e4 LT |
2001 | if (status & UART_LSR_BI) |
2002 | info->err_shadow |= NPPI_NOTIFY_BREAK; | |
2003 | ||
2004 | if (info->IsMoxaMustChipFlag) { | |
2005 | /* | |
2006 | if ( (status & 0x02) && !(status & 0x01) ) { | |
2007 | outb(info->base+UART_FCR, 0x23); | |
2008 | continue; | |
2009 | } | |
2010 | */ | |
8ea2c2ec JJ |
2011 | if (iir == MOXA_MUST_IIR_GDA || |
2012 | iir == MOXA_MUST_IIR_RDA || | |
2013 | iir == MOXA_MUST_IIR_RTO || | |
2014 | iir == MOXA_MUST_IIR_LSR) | |
1da177e4 LT |
2015 | mxser_receive_chars(info, &status); |
2016 | ||
2017 | } else { | |
8ea2c2ec | 2018 | /* above add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2019 | |
2020 | status &= info->read_status_mask; | |
2021 | if (status & UART_LSR_DR) | |
2022 | mxser_receive_chars(info, &status); | |
2023 | } | |
2024 | msr = inb(info->base + UART_MSR); | |
2025 | if (msr & UART_MSR_ANY_DELTA) { | |
2026 | mxser_check_modem_status(info, msr); | |
2027 | } | |
8ea2c2ec | 2028 | /* following add by Victor Yu. 09-13-2002 */ |
1da177e4 LT |
2029 | if (info->IsMoxaMustChipFlag) { |
2030 | if ((iir == 0x02) && (status & UART_LSR_THRE)) { | |
2031 | mxser_transmit_chars(info); | |
2032 | } | |
2033 | } else { | |
8ea2c2ec | 2034 | /* above add by Victor Yu. 09-13-2002 */ |
1da177e4 LT |
2035 | |
2036 | if (status & UART_LSR_THRE) { | |
2037 | /* 8-2-99 by William | |
2038 | if ( info->x_char || (info->xmit_cnt > 0) ) | |
2039 | */ | |
2040 | mxser_transmit_chars(info); | |
2041 | } | |
2042 | } | |
2043 | } | |
2044 | if (pass_counter++ > MXSER_ISR_PASS_LIMIT) { | |
2045 | break; /* Prevent infinite loops */ | |
2046 | } | |
2047 | } | |
2048 | ||
2049 | irq_stop: | |
8ea2c2ec | 2050 | /* spin_unlock(&gm_lock); */ |
1da177e4 LT |
2051 | return handled; |
2052 | } | |
2053 | ||
2054 | static void mxser_receive_chars(struct mxser_struct *info, int *status) | |
2055 | { | |
2056 | struct tty_struct *tty = info->tty; | |
2057 | unsigned char ch, gdl; | |
2058 | int ignored = 0; | |
2059 | int cnt = 0; | |
1da177e4 LT |
2060 | int recv_room; |
2061 | int max = 256; | |
2062 | unsigned long flags; | |
2063 | ||
2064 | spin_lock_irqsave(&info->slock, flags); | |
2065 | ||
33f0f88f | 2066 | recv_room = tty->receive_room; |
1da177e4 | 2067 | if ((recv_room == 0) && (!info->ldisc_stop_rx)) { |
8ea2c2ec | 2068 | /* mxser_throttle(tty); */ |
1da177e4 | 2069 | mxser_stoprx(tty); |
8ea2c2ec | 2070 | /* return; */ |
1da177e4 LT |
2071 | } |
2072 | ||
8ea2c2ec | 2073 | /* following add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2074 | if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) { |
2075 | ||
2076 | if (*status & UART_LSR_SPECIAL) { | |
2077 | goto intr_old; | |
2078 | } | |
8ea2c2ec JJ |
2079 | /* following add by Victor Yu. 02-11-2004 */ |
2080 | if (info->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID && | |
2081 | (*status & MOXA_MUST_LSR_RERR)) | |
1da177e4 | 2082 | goto intr_old; |
8ea2c2ec | 2083 | /* above add by Victor Yu. 02-14-2004 */ |
1da177e4 LT |
2084 | if (*status & MOXA_MUST_LSR_RERR) |
2085 | goto intr_old; | |
2086 | ||
2087 | gdl = inb(info->base + MOXA_MUST_GDL_REGISTER); | |
2088 | ||
8ea2c2ec JJ |
2089 | /* add by Victor Yu. 02-11-2004 */ |
2090 | if (info->IsMoxaMustChipFlag == MOXA_MUST_MU150_HWID) | |
1da177e4 LT |
2091 | gdl &= MOXA_MUST_GDL_MASK; |
2092 | if (gdl >= recv_room) { | |
2093 | if (!info->ldisc_stop_rx) { | |
8ea2c2ec | 2094 | /* mxser_throttle(tty); */ |
1da177e4 LT |
2095 | mxser_stoprx(tty); |
2096 | } | |
8ea2c2ec | 2097 | /* return; */ |
1da177e4 LT |
2098 | } |
2099 | while (gdl--) { | |
2100 | ch = inb(info->base + UART_RX); | |
3399ba5b | 2101 | tty_insert_flip_char(tty, ch, 0); |
1da177e4 LT |
2102 | cnt++; |
2103 | /* | |
8ea2c2ec | 2104 | if ((cnt >= HI_WATER) && (info->stop_rx == 0)) { |
1da177e4 | 2105 | mxser_stoprx(tty); |
8ea2c2ec | 2106 | info->stop_rx = 1; |
1da177e4 LT |
2107 | break; |
2108 | } */ | |
2109 | } | |
2110 | goto end_intr; | |
2111 | } | |
8ea2c2ec JJ |
2112 | intr_old: |
2113 | /* above add by Victor Yu. 09-02-2002 */ | |
1da177e4 LT |
2114 | |
2115 | do { | |
2116 | if (max-- < 0) | |
2117 | break; | |
2118 | /* | |
8ea2c2ec | 2119 | if ((cnt >= HI_WATER) && (info->stop_rx == 0)) { |
1da177e4 LT |
2120 | mxser_stoprx(tty); |
2121 | info->stop_rx=1; | |
2122 | break; | |
2123 | } | |
2124 | */ | |
2125 | ||
2126 | ch = inb(info->base + UART_RX); | |
8ea2c2ec | 2127 | /* following add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2128 | if (info->IsMoxaMustChipFlag && (*status & UART_LSR_OE) /*&& !(*status&UART_LSR_DR) */ ) |
2129 | outb(0x23, info->base + UART_FCR); | |
2130 | *status &= info->read_status_mask; | |
8ea2c2ec | 2131 | /* above add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2132 | if (*status & info->ignore_status_mask) { |
2133 | if (++ignored > 100) | |
2134 | break; | |
2135 | } else { | |
3399ba5b | 2136 | char flag = 0; |
1da177e4 LT |
2137 | if (*status & UART_LSR_SPECIAL) { |
2138 | if (*status & UART_LSR_BI) { | |
3399ba5b | 2139 | flag = TTY_BREAK; |
1da177e4 LT |
2140 | /* added by casper 1/11/2000 */ |
2141 | info->icount.brk++; | |
1da177e4 LT |
2142 | /* */ |
2143 | if (info->flags & ASYNC_SAK) | |
2144 | do_SAK(tty); | |
2145 | } else if (*status & UART_LSR_PE) { | |
3399ba5b | 2146 | flag = TTY_PARITY; |
1da177e4 LT |
2147 | /* added by casper 1/11/2000 */ |
2148 | info->icount.parity++; | |
2149 | /* */ | |
2150 | } else if (*status & UART_LSR_FE) { | |
3399ba5b | 2151 | flag = TTY_FRAME; |
1da177e4 LT |
2152 | /* added by casper 1/11/2000 */ |
2153 | info->icount.frame++; | |
2154 | /* */ | |
2155 | } else if (*status & UART_LSR_OE) { | |
3399ba5b | 2156 | flag = TTY_OVERRUN; |
1da177e4 LT |
2157 | /* added by casper 1/11/2000 */ |
2158 | info->icount.overrun++; | |
2159 | /* */ | |
3399ba5b DV |
2160 | } |
2161 | } | |
2162 | tty_insert_flip_char(tty, ch, flag); | |
1da177e4 LT |
2163 | cnt++; |
2164 | if (cnt >= recv_room) { | |
2165 | if (!info->ldisc_stop_rx) { | |
8ea2c2ec | 2166 | /* mxser_throttle(tty); */ |
1da177e4 LT |
2167 | mxser_stoprx(tty); |
2168 | } | |
2169 | break; | |
2170 | } | |
2171 | ||
2172 | } | |
2173 | ||
8ea2c2ec | 2174 | /* following add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2175 | if (info->IsMoxaMustChipFlag) |
2176 | break; | |
8ea2c2ec | 2177 | /* above add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2178 | |
2179 | /* mask by Victor Yu. 09-02-2002 | |
2180 | *status = inb(info->base + UART_LSR) & info->read_status_mask; | |
2181 | */ | |
8ea2c2ec | 2182 | /* following add by Victor Yu. 09-02-2002 */ |
1da177e4 | 2183 | *status = inb(info->base + UART_LSR); |
8ea2c2ec | 2184 | /* above add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2185 | } while (*status & UART_LSR_DR); |
2186 | ||
8ea2c2ec | 2187 | end_intr: /* add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2188 | mxvar_log.rxcnt[info->port] += cnt; |
2189 | info->mon_data.rxcnt += cnt; | |
2190 | info->mon_data.up_rxcnt += cnt; | |
2191 | spin_unlock_irqrestore(&info->slock, flags); | |
3399ba5b | 2192 | |
1da177e4 LT |
2193 | tty_flip_buffer_push(tty); |
2194 | } | |
2195 | ||
2196 | static void mxser_transmit_chars(struct mxser_struct *info) | |
2197 | { | |
2198 | int count, cnt; | |
2199 | unsigned long flags; | |
2200 | ||
2201 | spin_lock_irqsave(&info->slock, flags); | |
2202 | ||
2203 | if (info->x_char) { | |
2204 | outb(info->x_char, info->base + UART_TX); | |
2205 | info->x_char = 0; | |
2206 | mxvar_log.txcnt[info->port]++; | |
2207 | info->mon_data.txcnt++; | |
2208 | info->mon_data.up_txcnt++; | |
2209 | ||
2210 | /* added by casper 1/11/2000 */ | |
2211 | info->icount.tx++; | |
2212 | /* */ | |
2213 | spin_unlock_irqrestore(&info->slock, flags); | |
2214 | return; | |
2215 | } | |
2216 | ||
2217 | if (info->xmit_buf == 0) { | |
2218 | spin_unlock_irqrestore(&info->slock, flags); | |
2219 | return; | |
2220 | } | |
2221 | ||
8ea2c2ec JJ |
2222 | if ((info->xmit_cnt <= 0) || info->tty->stopped || |
2223 | (info->tty->hw_stopped && | |
2224 | (info->type != PORT_16550A) && | |
2225 | (!info->IsMoxaMustChipFlag))) { | |
1da177e4 LT |
2226 | info->IER &= ~UART_IER_THRI; |
2227 | outb(info->IER, info->base + UART_IER); | |
2228 | spin_unlock_irqrestore(&info->slock, flags); | |
2229 | return; | |
2230 | } | |
2231 | ||
2232 | cnt = info->xmit_cnt; | |
2233 | count = info->xmit_fifo_size; | |
2234 | do { | |
8ea2c2ec JJ |
2235 | outb(info->xmit_buf[info->xmit_tail++], |
2236 | info->base + UART_TX); | |
1da177e4 LT |
2237 | info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE - 1); |
2238 | if (--info->xmit_cnt <= 0) | |
2239 | break; | |
2240 | } while (--count > 0); | |
2241 | mxvar_log.txcnt[info->port] += (cnt - info->xmit_cnt); | |
2242 | ||
8ea2c2ec | 2243 | /* added by James 03-12-2004. */ |
1da177e4 LT |
2244 | info->mon_data.txcnt += (cnt - info->xmit_cnt); |
2245 | info->mon_data.up_txcnt += (cnt - info->xmit_cnt); | |
8ea2c2ec | 2246 | /* (above) added by James. */ |
1da177e4 LT |
2247 | |
2248 | /* added by casper 1/11/2000 */ | |
2249 | info->icount.tx += (cnt - info->xmit_cnt); | |
2250 | /* */ | |
2251 | ||
2252 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
2253 | set_bit(MXSER_EVENT_TXLOW, &info->event); | |
2254 | schedule_work(&info->tqueue); | |
2255 | } | |
2256 | if (info->xmit_cnt <= 0) { | |
2257 | info->IER &= ~UART_IER_THRI; | |
2258 | outb(info->IER, info->base + UART_IER); | |
2259 | } | |
2260 | spin_unlock_irqrestore(&info->slock, flags); | |
2261 | } | |
2262 | ||
2263 | static void mxser_check_modem_status(struct mxser_struct *info, int status) | |
2264 | { | |
2265 | /* update input line counters */ | |
2266 | if (status & UART_MSR_TERI) | |
2267 | info->icount.rng++; | |
2268 | if (status & UART_MSR_DDSR) | |
2269 | info->icount.dsr++; | |
2270 | if (status & UART_MSR_DDCD) | |
2271 | info->icount.dcd++; | |
2272 | if (status & UART_MSR_DCTS) | |
2273 | info->icount.cts++; | |
2274 | info->mon_data.modem_status = status; | |
2275 | wake_up_interruptible(&info->delta_msr_wait); | |
2276 | ||
1da177e4 LT |
2277 | if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { |
2278 | if (status & UART_MSR_DCD) | |
2279 | wake_up_interruptible(&info->open_wait); | |
2280 | schedule_work(&info->tqueue); | |
2281 | } | |
2282 | ||
2283 | if (info->flags & ASYNC_CTS_FLOW) { | |
2284 | if (info->tty->hw_stopped) { | |
2285 | if (status & UART_MSR_CTS) { | |
2286 | info->tty->hw_stopped = 0; | |
2287 | ||
8ea2c2ec JJ |
2288 | if ((info->type != PORT_16550A) && |
2289 | (!info->IsMoxaMustChipFlag)) { | |
1da177e4 LT |
2290 | info->IER |= UART_IER_THRI; |
2291 | outb(info->IER, info->base + UART_IER); | |
2292 | } | |
2293 | set_bit(MXSER_EVENT_TXLOW, &info->event); | |
2294 | schedule_work(&info->tqueue); } | |
2295 | } else { | |
2296 | if (!(status & UART_MSR_CTS)) { | |
2297 | info->tty->hw_stopped = 1; | |
8ea2c2ec JJ |
2298 | if ((info->type != PORT_16550A) && |
2299 | (!info->IsMoxaMustChipFlag)) { | |
1da177e4 LT |
2300 | info->IER &= ~UART_IER_THRI; |
2301 | outb(info->IER, info->base + UART_IER); | |
2302 | } | |
2303 | } | |
2304 | } | |
2305 | } | |
2306 | } | |
2307 | ||
2308 | static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_struct *info) | |
2309 | { | |
2310 | DECLARE_WAITQUEUE(wait, current); | |
2311 | int retval; | |
2312 | int do_clocal = 0; | |
2313 | unsigned long flags; | |
2314 | ||
2315 | /* | |
2316 | * If non-blocking mode is set, or the port is not enabled, | |
2317 | * then make the check up front and then exit. | |
2318 | */ | |
2319 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { | |
2320 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
8ea2c2ec | 2321 | return 0; |
1da177e4 LT |
2322 | } |
2323 | ||
2324 | if (tty->termios->c_cflag & CLOCAL) | |
2325 | do_clocal = 1; | |
2326 | ||
2327 | /* | |
2328 | * Block waiting for the carrier detect and the line to become | |
2329 | * free (i.e., not in use by the callout). While we are in | |
2330 | * this loop, info->count is dropped by one, so that | |
2331 | * mxser_close() knows when to free things. We restore it upon | |
2332 | * exit, either normal or abnormal. | |
2333 | */ | |
2334 | retval = 0; | |
2335 | add_wait_queue(&info->open_wait, &wait); | |
2336 | ||
2337 | spin_lock_irqsave(&info->slock, flags); | |
2338 | if (!tty_hung_up_p(filp)) | |
2339 | info->count--; | |
2340 | spin_unlock_irqrestore(&info->slock, flags); | |
2341 | info->blocked_open++; | |
2342 | while (1) { | |
2343 | spin_lock_irqsave(&info->slock, flags); | |
8ea2c2ec JJ |
2344 | outb(inb(info->base + UART_MCR) | |
2345 | UART_MCR_DTR | UART_MCR_RTS, info->base + UART_MCR); | |
1da177e4 LT |
2346 | spin_unlock_irqrestore(&info->slock, flags); |
2347 | set_current_state(TASK_INTERRUPTIBLE); | |
2348 | if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)) { | |
2349 | if (info->flags & ASYNC_HUP_NOTIFY) | |
2350 | retval = -EAGAIN; | |
2351 | else | |
2352 | retval = -ERESTARTSYS; | |
2353 | break; | |
2354 | } | |
8ea2c2ec JJ |
2355 | if (!(info->flags & ASYNC_CLOSING) && |
2356 | (do_clocal || | |
2357 | (inb(info->base + UART_MSR) & UART_MSR_DCD))) | |
1da177e4 LT |
2358 | break; |
2359 | if (signal_pending(current)) { | |
2360 | retval = -ERESTARTSYS; | |
2361 | break; | |
2362 | } | |
2363 | schedule(); | |
2364 | } | |
2365 | set_current_state(TASK_RUNNING); | |
2366 | remove_wait_queue(&info->open_wait, &wait); | |
2367 | if (!tty_hung_up_p(filp)) | |
2368 | info->count++; | |
2369 | info->blocked_open--; | |
2370 | if (retval) | |
8ea2c2ec | 2371 | return retval; |
1da177e4 | 2372 | info->flags |= ASYNC_NORMAL_ACTIVE; |
8ea2c2ec | 2373 | return 0; |
1da177e4 LT |
2374 | } |
2375 | ||
2376 | static int mxser_startup(struct mxser_struct *info) | |
2377 | { | |
1da177e4 LT |
2378 | unsigned long page; |
2379 | unsigned long flags; | |
2380 | ||
2381 | page = __get_free_page(GFP_KERNEL); | |
2382 | if (!page) | |
8ea2c2ec | 2383 | return -ENOMEM; |
1da177e4 LT |
2384 | |
2385 | spin_lock_irqsave(&info->slock, flags); | |
2386 | ||
2387 | if (info->flags & ASYNC_INITIALIZED) { | |
2388 | free_page(page); | |
2389 | spin_unlock_irqrestore(&info->slock, flags); | |
8ea2c2ec | 2390 | return 0; |
1da177e4 LT |
2391 | } |
2392 | ||
2393 | if (!info->base || !info->type) { | |
2394 | if (info->tty) | |
2395 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2396 | free_page(page); | |
2397 | spin_unlock_irqrestore(&info->slock, flags); | |
8ea2c2ec | 2398 | return 0; |
1da177e4 LT |
2399 | } |
2400 | if (info->xmit_buf) | |
2401 | free_page(page); | |
2402 | else | |
2403 | info->xmit_buf = (unsigned char *) page; | |
2404 | ||
2405 | /* | |
2406 | * Clear the FIFO buffers and disable them | |
2407 | * (they will be reenabled in mxser_change_speed()) | |
2408 | */ | |
2409 | if (info->IsMoxaMustChipFlag) | |
8ea2c2ec JJ |
2410 | outb((UART_FCR_CLEAR_RCVR | |
2411 | UART_FCR_CLEAR_XMIT | | |
2412 | MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR); | |
1da177e4 | 2413 | else |
8ea2c2ec JJ |
2414 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), |
2415 | info->base + UART_FCR); | |
1da177e4 LT |
2416 | |
2417 | /* | |
2418 | * At this point there's no way the LSR could still be 0xFF; | |
2419 | * if it is, then bail out, because there's likely no UART | |
2420 | * here. | |
2421 | */ | |
2422 | if (inb(info->base + UART_LSR) == 0xff) { | |
2423 | spin_unlock_irqrestore(&info->slock, flags); | |
2424 | if (capable(CAP_SYS_ADMIN)) { | |
2425 | if (info->tty) | |
2426 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
8ea2c2ec | 2427 | return 0; |
1da177e4 | 2428 | } else |
8ea2c2ec | 2429 | return -ENODEV; |
1da177e4 LT |
2430 | } |
2431 | ||
2432 | /* | |
2433 | * Clear the interrupt registers. | |
2434 | */ | |
2435 | (void) inb(info->base + UART_LSR); | |
2436 | (void) inb(info->base + UART_RX); | |
2437 | (void) inb(info->base + UART_IIR); | |
2438 | (void) inb(info->base + UART_MSR); | |
2439 | ||
2440 | /* | |
2441 | * Now, initialize the UART | |
2442 | */ | |
2443 | outb(UART_LCR_WLEN8, info->base + UART_LCR); /* reset DLAB */ | |
2444 | info->MCR = UART_MCR_DTR | UART_MCR_RTS; | |
2445 | outb(info->MCR, info->base + UART_MCR); | |
2446 | ||
2447 | /* | |
2448 | * Finally, enable interrupts | |
2449 | */ | |
2450 | info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; | |
8ea2c2ec | 2451 | /* info->IER = UART_IER_RLSI | UART_IER_RDI; */ |
1da177e4 | 2452 | |
8ea2c2ec | 2453 | /* following add by Victor Yu. 08-30-2002 */ |
1da177e4 LT |
2454 | if (info->IsMoxaMustChipFlag) |
2455 | info->IER |= MOXA_MUST_IER_EGDAI; | |
8ea2c2ec | 2456 | /* above add by Victor Yu. 08-30-2002 */ |
1da177e4 LT |
2457 | outb(info->IER, info->base + UART_IER); /* enable interrupts */ |
2458 | ||
2459 | /* | |
2460 | * And clear the interrupt registers again for luck. | |
2461 | */ | |
2462 | (void) inb(info->base + UART_LSR); | |
2463 | (void) inb(info->base + UART_RX); | |
2464 | (void) inb(info->base + UART_IIR); | |
2465 | (void) inb(info->base + UART_MSR); | |
2466 | ||
2467 | if (info->tty) | |
2468 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2469 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2470 | ||
2471 | /* | |
2472 | * and set the speed of the serial port | |
2473 | */ | |
2474 | spin_unlock_irqrestore(&info->slock, flags); | |
2475 | mxser_change_speed(info, NULL); | |
2476 | ||
2477 | info->flags |= ASYNC_INITIALIZED; | |
8ea2c2ec | 2478 | return 0; |
1da177e4 LT |
2479 | } |
2480 | ||
2481 | /* | |
2482 | * This routine will shutdown a serial port; interrupts maybe disabled, and | |
2483 | * DTR is dropped if the hangup on close termio flag is on. | |
2484 | */ | |
2485 | static void mxser_shutdown(struct mxser_struct *info) | |
2486 | { | |
2487 | unsigned long flags; | |
2488 | ||
2489 | if (!(info->flags & ASYNC_INITIALIZED)) | |
2490 | return; | |
2491 | ||
2492 | spin_lock_irqsave(&info->slock, flags); | |
2493 | ||
2494 | /* | |
2495 | * clear delta_msr_wait queue to avoid mem leaks: we may free the irq | |
2496 | * here so the queue might never be waken up | |
2497 | */ | |
2498 | wake_up_interruptible(&info->delta_msr_wait); | |
2499 | ||
2500 | /* | |
2501 | * Free the IRQ, if necessary | |
2502 | */ | |
2503 | if (info->xmit_buf) { | |
2504 | free_page((unsigned long) info->xmit_buf); | |
2505 | info->xmit_buf = NULL; | |
2506 | } | |
2507 | ||
2508 | info->IER = 0; | |
2509 | outb(0x00, info->base + UART_IER); | |
2510 | ||
2511 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) | |
2512 | info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS); | |
2513 | outb(info->MCR, info->base + UART_MCR); | |
2514 | ||
2515 | /* clear Rx/Tx FIFO's */ | |
8ea2c2ec | 2516 | /* following add by Victor Yu. 08-30-2002 */ |
1da177e4 | 2517 | if (info->IsMoxaMustChipFlag) |
8ea2c2ec JJ |
2518 | outb((UART_FCR_CLEAR_RCVR | |
2519 | UART_FCR_CLEAR_XMIT | | |
2520 | MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR); | |
1da177e4 | 2521 | else |
8ea2c2ec JJ |
2522 | /* above add by Victor Yu. 08-30-2002 */ |
2523 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), | |
2524 | info->base + UART_FCR); | |
1da177e4 LT |
2525 | |
2526 | /* read data port to reset things */ | |
2527 | (void) inb(info->base + UART_RX); | |
2528 | ||
2529 | if (info->tty) | |
2530 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2531 | ||
2532 | info->flags &= ~ASYNC_INITIALIZED; | |
2533 | ||
8ea2c2ec JJ |
2534 | /* following add by Victor Yu. 09-23-2002 */ |
2535 | if (info->IsMoxaMustChipFlag) | |
1da177e4 | 2536 | SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->base); |
8ea2c2ec | 2537 | /* above add by Victor Yu. 09-23-2002 */ |
1da177e4 LT |
2538 | |
2539 | spin_unlock_irqrestore(&info->slock, flags); | |
2540 | } | |
2541 | ||
2542 | /* | |
2543 | * This routine is called to set the UART divisor registers to match | |
2544 | * the specified baud rate for a serial port. | |
2545 | */ | |
606d099c | 2546 | static int mxser_change_speed(struct mxser_struct *info, struct ktermios *old_termios) |
1da177e4 LT |
2547 | { |
2548 | unsigned cflag, cval, fcr; | |
2549 | int ret = 0; | |
2550 | unsigned char status; | |
2551 | long baud; | |
2552 | unsigned long flags; | |
2553 | ||
1da177e4 LT |
2554 | if (!info->tty || !info->tty->termios) |
2555 | return ret; | |
2556 | cflag = info->tty->termios->c_cflag; | |
2557 | if (!(info->base)) | |
2558 | return ret; | |
2559 | ||
1da177e4 LT |
2560 | #ifndef B921600 |
2561 | #define B921600 (B460800 +1) | |
2562 | #endif | |
2563 | if (mxser_set_baud_method[info->port] == 0) { | |
c7bce309 | 2564 | baud = tty_get_baud_rate(info->tty); |
1da177e4 LT |
2565 | mxser_set_baud(info, baud); |
2566 | } | |
2567 | ||
2568 | /* byte size and parity */ | |
2569 | switch (cflag & CSIZE) { | |
2570 | case CS5: | |
2571 | cval = 0x00; | |
2572 | break; | |
2573 | case CS6: | |
2574 | cval = 0x01; | |
2575 | break; | |
2576 | case CS7: | |
2577 | cval = 0x02; | |
2578 | break; | |
2579 | case CS8: | |
2580 | cval = 0x03; | |
2581 | break; | |
2582 | default: | |
2583 | cval = 0x00; | |
2584 | break; /* too keep GCC shut... */ | |
2585 | } | |
2586 | if (cflag & CSTOPB) | |
2587 | cval |= 0x04; | |
2588 | if (cflag & PARENB) | |
2589 | cval |= UART_LCR_PARITY; | |
8ea2c2ec | 2590 | if (!(cflag & PARODD)) |
1da177e4 | 2591 | cval |= UART_LCR_EPAR; |
1da177e4 LT |
2592 | if (cflag & CMSPAR) |
2593 | cval |= UART_LCR_SPAR; | |
2594 | ||
2595 | if ((info->type == PORT_8250) || (info->type == PORT_16450)) { | |
2596 | if (info->IsMoxaMustChipFlag) { | |
2597 | fcr = UART_FCR_ENABLE_FIFO; | |
2598 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; | |
2599 | SET_MOXA_MUST_FIFO_VALUE(info); | |
2600 | } else | |
2601 | fcr = 0; | |
2602 | } else { | |
2603 | fcr = UART_FCR_ENABLE_FIFO; | |
8ea2c2ec | 2604 | /* following add by Victor Yu. 08-30-2002 */ |
1da177e4 LT |
2605 | if (info->IsMoxaMustChipFlag) { |
2606 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; | |
2607 | SET_MOXA_MUST_FIFO_VALUE(info); | |
2608 | } else { | |
8ea2c2ec | 2609 | /* above add by Victor Yu. 08-30-2002 */ |
1da177e4 LT |
2610 | switch (info->rx_trigger) { |
2611 | case 1: | |
2612 | fcr |= UART_FCR_TRIGGER_1; | |
2613 | break; | |
2614 | case 4: | |
2615 | fcr |= UART_FCR_TRIGGER_4; | |
2616 | break; | |
2617 | case 8: | |
2618 | fcr |= UART_FCR_TRIGGER_8; | |
2619 | break; | |
2620 | default: | |
2621 | fcr |= UART_FCR_TRIGGER_14; | |
2622 | break; | |
2623 | } | |
2624 | } | |
2625 | } | |
2626 | ||
2627 | /* CTS flow control flag and modem status interrupts */ | |
2628 | info->IER &= ~UART_IER_MSI; | |
2629 | info->MCR &= ~UART_MCR_AFE; | |
2630 | if (cflag & CRTSCTS) { | |
2631 | info->flags |= ASYNC_CTS_FLOW; | |
2632 | info->IER |= UART_IER_MSI; | |
2633 | if ((info->type == PORT_16550A) || (info->IsMoxaMustChipFlag)) { | |
2634 | info->MCR |= UART_MCR_AFE; | |
8ea2c2ec JJ |
2635 | /* status = mxser_get_msr(info->base, 0, info->port); */ |
2636 | /* | |
2637 | save_flags(flags); | |
1da177e4 LT |
2638 | cli(); |
2639 | status = inb(baseaddr + UART_MSR); | |
8ea2c2ec JJ |
2640 | restore_flags(flags); |
2641 | */ | |
2642 | /* mxser_check_modem_status(info, status); */ | |
1da177e4 | 2643 | } else { |
8ea2c2ec JJ |
2644 | /* status = mxser_get_msr(info->base, 0, info->port); */ |
2645 | /* MX_LOCK(&info->slock); */ | |
1da177e4 | 2646 | status = inb(info->base + UART_MSR); |
8ea2c2ec | 2647 | /* MX_UNLOCK(&info->slock); */ |
1da177e4 LT |
2648 | if (info->tty->hw_stopped) { |
2649 | if (status & UART_MSR_CTS) { | |
2650 | info->tty->hw_stopped = 0; | |
8ea2c2ec JJ |
2651 | if ((info->type != PORT_16550A) && |
2652 | (!info->IsMoxaMustChipFlag)) { | |
1da177e4 LT |
2653 | info->IER |= UART_IER_THRI; |
2654 | outb(info->IER, info->base + UART_IER); | |
2655 | } | |
2656 | set_bit(MXSER_EVENT_TXLOW, &info->event); | |
2657 | schedule_work(&info->tqueue); } | |
2658 | } else { | |
2659 | if (!(status & UART_MSR_CTS)) { | |
2660 | info->tty->hw_stopped = 1; | |
8ea2c2ec JJ |
2661 | if ((info->type != PORT_16550A) && |
2662 | (!info->IsMoxaMustChipFlag)) { | |
1da177e4 LT |
2663 | info->IER &= ~UART_IER_THRI; |
2664 | outb(info->IER, info->base + UART_IER); | |
2665 | } | |
2666 | } | |
2667 | } | |
2668 | } | |
2669 | } else { | |
2670 | info->flags &= ~ASYNC_CTS_FLOW; | |
2671 | } | |
2672 | outb(info->MCR, info->base + UART_MCR); | |
2673 | if (cflag & CLOCAL) { | |
2674 | info->flags &= ~ASYNC_CHECK_CD; | |
2675 | } else { | |
2676 | info->flags |= ASYNC_CHECK_CD; | |
2677 | info->IER |= UART_IER_MSI; | |
2678 | } | |
2679 | outb(info->IER, info->base + UART_IER); | |
2680 | ||
2681 | /* | |
2682 | * Set up parity check flag | |
2683 | */ | |
2684 | info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; | |
2685 | if (I_INPCK(info->tty)) | |
2686 | info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; | |
2687 | if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) | |
2688 | info->read_status_mask |= UART_LSR_BI; | |
2689 | ||
2690 | info->ignore_status_mask = 0; | |
2691 | ||
2692 | if (I_IGNBRK(info->tty)) { | |
2693 | info->ignore_status_mask |= UART_LSR_BI; | |
2694 | info->read_status_mask |= UART_LSR_BI; | |
2695 | /* | |
2696 | * If we're ignore parity and break indicators, ignore | |
2697 | * overruns too. (For real raw support). | |
2698 | */ | |
2699 | if (I_IGNPAR(info->tty)) { | |
8ea2c2ec JJ |
2700 | info->ignore_status_mask |= |
2701 | UART_LSR_OE | | |
2702 | UART_LSR_PE | | |
2703 | UART_LSR_FE; | |
2704 | info->read_status_mask |= | |
2705 | UART_LSR_OE | | |
2706 | UART_LSR_PE | | |
2707 | UART_LSR_FE; | |
1da177e4 LT |
2708 | } |
2709 | } | |
8ea2c2ec | 2710 | /* following add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2711 | if (info->IsMoxaMustChipFlag) { |
2712 | spin_lock_irqsave(&info->slock, flags); | |
2713 | SET_MOXA_MUST_XON1_VALUE(info->base, START_CHAR(info->tty)); | |
2714 | SET_MOXA_MUST_XOFF1_VALUE(info->base, STOP_CHAR(info->tty)); | |
2715 | if (I_IXON(info->tty)) { | |
2716 | ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | |
2717 | } else { | |
2718 | DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | |
2719 | } | |
2720 | if (I_IXOFF(info->tty)) { | |
2721 | ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base); | |
2722 | } else { | |
2723 | DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base); | |
2724 | } | |
2725 | /* | |
2726 | if ( I_IXANY(info->tty) ) { | |
2727 | info->MCR |= MOXA_MUST_MCR_XON_ANY; | |
2728 | ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base); | |
2729 | } else { | |
2730 | info->MCR &= ~MOXA_MUST_MCR_XON_ANY; | |
2731 | DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base); | |
2732 | } | |
2733 | */ | |
2734 | spin_unlock_irqrestore(&info->slock, flags); | |
2735 | } | |
8ea2c2ec | 2736 | /* above add by Victor Yu. 09-02-2002 */ |
1da177e4 LT |
2737 | |
2738 | ||
2739 | outb(fcr, info->base + UART_FCR); /* set fcr */ | |
2740 | outb(cval, info->base + UART_LCR); | |
2741 | ||
2742 | return ret; | |
2743 | } | |
2744 | ||
2745 | ||
2746 | static int mxser_set_baud(struct mxser_struct *info, long newspd) | |
2747 | { | |
2748 | int quot = 0; | |
2749 | unsigned char cval; | |
2750 | int ret = 0; | |
2751 | unsigned long flags; | |
2752 | ||
2753 | if (!info->tty || !info->tty->termios) | |
2754 | return ret; | |
2755 | ||
2756 | if (!(info->base)) | |
2757 | return ret; | |
2758 | ||
2759 | if (newspd > info->MaxCanSetBaudRate) | |
2760 | return 0; | |
2761 | ||
2762 | info->realbaud = newspd; | |
2763 | if (newspd == 134) { | |
2764 | quot = (2 * info->baud_base / 269); | |
2765 | } else if (newspd) { | |
2766 | quot = info->baud_base / newspd; | |
1da177e4 LT |
2767 | if (quot == 0) |
2768 | quot = 1; | |
1da177e4 LT |
2769 | } else { |
2770 | quot = 0; | |
2771 | } | |
2772 | ||
2773 | info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base); | |
2774 | info->timeout += HZ / 50; /* Add .02 seconds of slop */ | |
2775 | ||
2776 | if (quot) { | |
2777 | spin_lock_irqsave(&info->slock, flags); | |
2778 | info->MCR |= UART_MCR_DTR; | |
2779 | outb(info->MCR, info->base + UART_MCR); | |
2780 | spin_unlock_irqrestore(&info->slock, flags); | |
2781 | } else { | |
2782 | spin_lock_irqsave(&info->slock, flags); | |
2783 | info->MCR &= ~UART_MCR_DTR; | |
2784 | outb(info->MCR, info->base + UART_MCR); | |
2785 | spin_unlock_irqrestore(&info->slock, flags); | |
2786 | return ret; | |
2787 | } | |
2788 | ||
2789 | cval = inb(info->base + UART_LCR); | |
2790 | ||
2791 | outb(cval | UART_LCR_DLAB, info->base + UART_LCR); /* set DLAB */ | |
2792 | ||
2793 | outb(quot & 0xff, info->base + UART_DLL); /* LS of divisor */ | |
2794 | outb(quot >> 8, info->base + UART_DLM); /* MS of divisor */ | |
2795 | outb(cval, info->base + UART_LCR); /* reset DLAB */ | |
2796 | ||
2797 | ||
2798 | return ret; | |
2799 | } | |
2800 | ||
1da177e4 LT |
2801 | /* |
2802 | * ------------------------------------------------------------ | |
2803 | * friends of mxser_ioctl() | |
2804 | * ------------------------------------------------------------ | |
2805 | */ | |
2806 | static int mxser_get_serial_info(struct mxser_struct *info, struct serial_struct __user *retinfo) | |
2807 | { | |
2808 | struct serial_struct tmp; | |
2809 | ||
2810 | if (!retinfo) | |
8ea2c2ec | 2811 | return -EFAULT; |
1da177e4 LT |
2812 | memset(&tmp, 0, sizeof(tmp)); |
2813 | tmp.type = info->type; | |
2814 | tmp.line = info->port; | |
2815 | tmp.port = info->base; | |
2816 | tmp.irq = info->irq; | |
2817 | tmp.flags = info->flags; | |
2818 | tmp.baud_base = info->baud_base; | |
2819 | tmp.close_delay = info->close_delay; | |
2820 | tmp.closing_wait = info->closing_wait; | |
2821 | tmp.custom_divisor = info->custom_divisor; | |
2822 | tmp.hub6 = 0; | |
2823 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2824 | return -EFAULT; | |
8ea2c2ec | 2825 | return 0; |
1da177e4 LT |
2826 | } |
2827 | ||
2828 | static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct __user *new_info) | |
2829 | { | |
2830 | struct serial_struct new_serial; | |
2831 | unsigned int flags; | |
2832 | int retval = 0; | |
2833 | ||
2834 | if (!new_info || !info->base) | |
8ea2c2ec | 2835 | return -EFAULT; |
1da177e4 LT |
2836 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
2837 | return -EFAULT; | |
2838 | ||
8ea2c2ec JJ |
2839 | if ((new_serial.irq != info->irq) || |
2840 | (new_serial.port != info->base) || | |
2841 | (new_serial.custom_divisor != info->custom_divisor) || | |
2842 | (new_serial.baud_base != info->baud_base)) | |
2843 | return -EPERM; | |
1da177e4 LT |
2844 | |
2845 | flags = info->flags & ASYNC_SPD_MASK; | |
2846 | ||
2847 | if (!capable(CAP_SYS_ADMIN)) { | |
8ea2c2ec JJ |
2848 | if ((new_serial.baud_base != info->baud_base) || |
2849 | (new_serial.close_delay != info->close_delay) || | |
2850 | ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK))) | |
2851 | return -EPERM; | |
2852 | info->flags = ((info->flags & ~ASYNC_USR_MASK) | | |
2853 | (new_serial.flags & ASYNC_USR_MASK)); | |
1da177e4 LT |
2854 | } else { |
2855 | /* | |
2856 | * OK, past this point, all the error checking has been done. | |
2857 | * At this point, we start making changes..... | |
2858 | */ | |
8ea2c2ec JJ |
2859 | info->flags = ((info->flags & ~ASYNC_FLAGS) | |
2860 | (new_serial.flags & ASYNC_FLAGS)); | |
1da177e4 LT |
2861 | info->close_delay = new_serial.close_delay * HZ / 100; |
2862 | info->closing_wait = new_serial.closing_wait * HZ / 100; | |
8ea2c2ec JJ |
2863 | info->tty->low_latency = |
2864 | (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
2865 | info->tty->low_latency = 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */ | |
1da177e4 LT |
2866 | } |
2867 | ||
2868 | /* added by casper, 3/17/2000, for mouse */ | |
2869 | info->type = new_serial.type; | |
2870 | ||
2871 | process_txrx_fifo(info); | |
2872 | ||
1da177e4 LT |
2873 | if (info->flags & ASYNC_INITIALIZED) { |
2874 | if (flags != (info->flags & ASYNC_SPD_MASK)) { | |
2875 | mxser_change_speed(info, NULL); | |
2876 | } | |
2877 | } else { | |
2878 | retval = mxser_startup(info); | |
2879 | } | |
8ea2c2ec | 2880 | return retval; |
1da177e4 LT |
2881 | } |
2882 | ||
2883 | /* | |
2884 | * mxser_get_lsr_info - get line status register info | |
2885 | * | |
2886 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2887 | * is emptied. On bus types like RS485, the transmitter must | |
2888 | * release the bus after transmitting. This must be done when | |
2889 | * the transmit shift register is empty, not be done when the | |
2890 | * transmit holding register is empty. This functionality | |
2891 | * allows an RS485 driver to be written in user space. | |
2892 | */ | |
2893 | static int mxser_get_lsr_info(struct mxser_struct *info, unsigned int __user *value) | |
2894 | { | |
2895 | unsigned char status; | |
2896 | unsigned int result; | |
2897 | unsigned long flags; | |
2898 | ||
2899 | spin_lock_irqsave(&info->slock, flags); | |
2900 | status = inb(info->base + UART_LSR); | |
2901 | spin_unlock_irqrestore(&info->slock, flags); | |
2902 | result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); | |
2903 | return put_user(result, value); | |
2904 | } | |
2905 | ||
2906 | /* | |
2907 | * This routine sends a break character out the serial port. | |
2908 | */ | |
2909 | static void mxser_send_break(struct mxser_struct *info, int duration) | |
2910 | { | |
2911 | unsigned long flags; | |
2912 | ||
2913 | if (!info->base) | |
2914 | return; | |
2915 | set_current_state(TASK_INTERRUPTIBLE); | |
2916 | spin_lock_irqsave(&info->slock, flags); | |
8ea2c2ec JJ |
2917 | outb(inb(info->base + UART_LCR) | UART_LCR_SBC, |
2918 | info->base + UART_LCR); | |
1da177e4 LT |
2919 | spin_unlock_irqrestore(&info->slock, flags); |
2920 | schedule_timeout(duration); | |
2921 | spin_lock_irqsave(&info->slock, flags); | |
8ea2c2ec JJ |
2922 | outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC, |
2923 | info->base + UART_LCR); | |
1da177e4 LT |
2924 | spin_unlock_irqrestore(&info->slock, flags); |
2925 | } | |
2926 | ||
2927 | static int mxser_tiocmget(struct tty_struct *tty, struct file *file) | |
2928 | { | |
56e139f6 | 2929 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
2930 | unsigned char control, status; |
2931 | unsigned long flags; | |
2932 | ||
2933 | ||
2934 | if (tty->index == MXSER_PORTS) | |
8ea2c2ec | 2935 | return -ENOIOCTLCMD; |
1da177e4 | 2936 | if (tty->flags & (1 << TTY_IO_ERROR)) |
8ea2c2ec | 2937 | return -EIO; |
1da177e4 LT |
2938 | |
2939 | control = info->MCR; | |
2940 | ||
2941 | spin_lock_irqsave(&info->slock, flags); | |
2942 | status = inb(info->base + UART_MSR); | |
2943 | if (status & UART_MSR_ANY_DELTA) | |
2944 | mxser_check_modem_status(info, status); | |
2945 | spin_unlock_irqrestore(&info->slock, flags); | |
2946 | return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) | | |
8ea2c2ec JJ |
2947 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) | |
2948 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) | | |
2949 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) | | |
2950 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) | | |
2951 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); | |
1da177e4 LT |
2952 | } |
2953 | ||
2954 | static int mxser_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) | |
2955 | { | |
56e139f6 | 2956 | struct mxser_struct *info = tty->driver_data; |
1da177e4 LT |
2957 | unsigned long flags; |
2958 | ||
2959 | ||
2960 | if (tty->index == MXSER_PORTS) | |
2961 | return -ENOIOCTLCMD; | |
2962 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
2963 | return -EIO; | |
2964 | ||
2965 | spin_lock_irqsave(&info->slock, flags); | |
2966 | ||
2967 | if (set & TIOCM_RTS) | |
2968 | info->MCR |= UART_MCR_RTS; | |
2969 | if (set & TIOCM_DTR) | |
2970 | info->MCR |= UART_MCR_DTR; | |
2971 | ||
2972 | if (clear & TIOCM_RTS) | |
2973 | info->MCR &= ~UART_MCR_RTS; | |
2974 | if (clear & TIOCM_DTR) | |
2975 | info->MCR &= ~UART_MCR_DTR; | |
2976 | ||
2977 | outb(info->MCR, info->base + UART_MCR); | |
2978 | spin_unlock_irqrestore(&info->slock, flags); | |
2979 | return 0; | |
2980 | } | |
2981 | ||
2982 | ||
2983 | static int mxser_read_register(int, unsigned short *); | |
2984 | static int mxser_program_mode(int); | |
2985 | static void mxser_normal_mode(int); | |
2986 | ||
2987 | static int mxser_get_ISA_conf(int cap, struct mxser_hwconf *hwconf) | |
2988 | { | |
2989 | int id, i, bits; | |
2990 | unsigned short regs[16], irq; | |
2991 | unsigned char scratch, scratch2; | |
2992 | ||
2993 | hwconf->IsMoxaMustChipFlag = MOXA_OTHER_UART; | |
2994 | ||
2995 | id = mxser_read_register(cap, regs); | |
2996 | if (id == C168_ASIC_ID) { | |
2997 | hwconf->board_type = MXSER_BOARD_C168_ISA; | |
2998 | hwconf->ports = 8; | |
2999 | } else if (id == C104_ASIC_ID) { | |
3000 | hwconf->board_type = MXSER_BOARD_C104_ISA; | |
3001 | hwconf->ports = 4; | |
3002 | } else if (id == C102_ASIC_ID) { | |
3003 | hwconf->board_type = MXSER_BOARD_C102_ISA; | |
3004 | hwconf->ports = 2; | |
3005 | } else if (id == CI132_ASIC_ID) { | |
3006 | hwconf->board_type = MXSER_BOARD_CI132; | |
3007 | hwconf->ports = 2; | |
3008 | } else if (id == CI134_ASIC_ID) { | |
3009 | hwconf->board_type = MXSER_BOARD_CI134; | |
3010 | hwconf->ports = 4; | |
3011 | } else if (id == CI104J_ASIC_ID) { | |
3012 | hwconf->board_type = MXSER_BOARD_CI104J; | |
3013 | hwconf->ports = 4; | |
3014 | } else | |
8ea2c2ec | 3015 | return 0; |
1da177e4 LT |
3016 | |
3017 | irq = 0; | |
3018 | if (hwconf->ports == 2) { | |
3019 | irq = regs[9] & 0xF000; | |
3020 | irq = irq | (irq >> 4); | |
3021 | if (irq != (regs[9] & 0xFF00)) | |
8ea2c2ec | 3022 | return MXSER_ERR_IRQ_CONFLIT; |
1da177e4 LT |
3023 | } else if (hwconf->ports == 4) { |
3024 | irq = regs[9] & 0xF000; | |
3025 | irq = irq | (irq >> 4); | |
3026 | irq = irq | (irq >> 8); | |
3027 | if (irq != regs[9]) | |
8ea2c2ec | 3028 | return MXSER_ERR_IRQ_CONFLIT; |
1da177e4 LT |
3029 | } else if (hwconf->ports == 8) { |
3030 | irq = regs[9] & 0xF000; | |
3031 | irq = irq | (irq >> 4); | |
3032 | irq = irq | (irq >> 8); | |
3033 | if ((irq != regs[9]) || (irq != regs[10])) | |
8ea2c2ec | 3034 | return MXSER_ERR_IRQ_CONFLIT; |
1da177e4 LT |
3035 | } |
3036 | ||
8ea2c2ec JJ |
3037 | if (!irq) |
3038 | return MXSER_ERR_IRQ; | |
3039 | hwconf->irq = ((int)(irq & 0xF000) >> 12); | |
1da177e4 LT |
3040 | for (i = 0; i < 8; i++) |
3041 | hwconf->ioaddr[i] = (int) regs[i + 1] & 0xFFF8; | |
8ea2c2ec JJ |
3042 | if ((regs[12] & 0x80) == 0) |
3043 | return MXSER_ERR_VECTOR; | |
3044 | hwconf->vector = (int)regs[11]; /* interrupt vector */ | |
1da177e4 LT |
3045 | if (id == 1) |
3046 | hwconf->vector_mask = 0x00FF; | |
3047 | else | |
3048 | hwconf->vector_mask = 0x000F; | |
3049 | for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { | |
3050 | if (regs[12] & bits) { | |
3051 | hwconf->baud_base[i] = 921600; | |
8ea2c2ec | 3052 | hwconf->MaxCanSetBaudRate[i] = 921600; /* add by Victor Yu. 09-04-2002 */ |
1da177e4 LT |
3053 | } else { |
3054 | hwconf->baud_base[i] = 115200; | |
8ea2c2ec | 3055 | hwconf->MaxCanSetBaudRate[i] = 115200; /* add by Victor Yu. 09-04-2002 */ |
1da177e4 LT |
3056 | } |
3057 | } | |
3058 | scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); | |
3059 | outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR); | |
3060 | outb(0, cap + UART_EFR); /* EFR is the same as FCR */ | |
3061 | outb(scratch2, cap + UART_LCR); | |
3062 | outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR); | |
3063 | scratch = inb(cap + UART_IIR); | |
3064 | ||
3065 | if (scratch & 0xC0) | |
3066 | hwconf->uart_type = PORT_16550A; | |
3067 | else | |
3068 | hwconf->uart_type = PORT_16450; | |
3069 | if (id == 1) | |
3070 | hwconf->ports = 8; | |
3071 | else | |
3072 | hwconf->ports = 4; | |
3073 | request_region(hwconf->ioaddr[0], 8 * hwconf->ports, "mxser(IO)"); | |
3074 | request_region(hwconf->vector, 1, "mxser(vector)"); | |
8ea2c2ec | 3075 | return hwconf->ports; |
1da177e4 LT |
3076 | } |
3077 | ||
3078 | #define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ | |
3079 | #define CHIP_DO 0x02 /* Serial Data Output in Eprom */ | |
3080 | #define CHIP_CS 0x04 /* Serial Chip Select in Eprom */ | |
3081 | #define CHIP_DI 0x08 /* Serial Data Input in Eprom */ | |
3082 | #define EN_CCMD 0x000 /* Chip's command register */ | |
3083 | #define EN0_RSARLO 0x008 /* Remote start address reg 0 */ | |
3084 | #define EN0_RSARHI 0x009 /* Remote start address reg 1 */ | |
3085 | #define EN0_RCNTLO 0x00A /* Remote byte count reg WR */ | |
3086 | #define EN0_RCNTHI 0x00B /* Remote byte count reg WR */ | |
3087 | #define EN0_DCFG 0x00E /* Data configuration reg WR */ | |
3088 | #define EN0_PORT 0x010 /* Rcv missed frame error counter RD */ | |
3089 | #define ENC_PAGE0 0x000 /* Select page 0 of chip registers */ | |
3090 | #define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */ | |
3091 | static int mxser_read_register(int port, unsigned short *regs) | |
3092 | { | |
3093 | int i, k, value, id; | |
3094 | unsigned int j; | |
3095 | ||
3096 | id = mxser_program_mode(port); | |
3097 | if (id < 0) | |
8ea2c2ec | 3098 | return id; |
1da177e4 LT |
3099 | for (i = 0; i < 14; i++) { |
3100 | k = (i & 0x3F) | 0x180; | |
3101 | for (j = 0x100; j > 0; j >>= 1) { | |
3102 | outb(CHIP_CS, port); | |
3103 | if (k & j) { | |
3104 | outb(CHIP_CS | CHIP_DO, port); | |
3105 | outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ | |
3106 | } else { | |
3107 | outb(CHIP_CS, port); | |
3108 | outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ | |
3109 | } | |
3110 | } | |
8ea2c2ec | 3111 | (void)inb(port); |
1da177e4 LT |
3112 | value = 0; |
3113 | for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { | |
3114 | outb(CHIP_CS, port); | |
3115 | outb(CHIP_CS | CHIP_SK, port); | |
3116 | if (inb(port) & CHIP_DI) | |
3117 | value |= j; | |
3118 | } | |
3119 | regs[i] = value; | |
3120 | outb(0, port); | |
3121 | } | |
3122 | mxser_normal_mode(port); | |
8ea2c2ec | 3123 | return id; |
1da177e4 LT |
3124 | } |
3125 | ||
3126 | static int mxser_program_mode(int port) | |
3127 | { | |
3128 | int id, i, j, n; | |
8ea2c2ec | 3129 | /* unsigned long flags; */ |
1da177e4 LT |
3130 | |
3131 | spin_lock(&gm_lock); | |
3132 | outb(0, port); | |
3133 | outb(0, port); | |
3134 | outb(0, port); | |
8ea2c2ec JJ |
3135 | (void)inb(port); |
3136 | (void)inb(port); | |
1da177e4 | 3137 | outb(0, port); |
8ea2c2ec JJ |
3138 | (void)inb(port); |
3139 | /* restore_flags(flags); */ | |
1da177e4 LT |
3140 | spin_unlock(&gm_lock); |
3141 | ||
3142 | id = inb(port + 1) & 0x1F; | |
8ea2c2ec JJ |
3143 | if ((id != C168_ASIC_ID) && |
3144 | (id != C104_ASIC_ID) && | |
3145 | (id != C102_ASIC_ID) && | |
3146 | (id != CI132_ASIC_ID) && | |
3147 | (id != CI134_ASIC_ID) && | |
3148 | (id != CI104J_ASIC_ID)) | |
3149 | return -1; | |
1da177e4 LT |
3150 | for (i = 0, j = 0; i < 4; i++) { |
3151 | n = inb(port + 2); | |
3152 | if (n == 'M') { | |
3153 | j = 1; | |
3154 | } else if ((j == 1) && (n == 1)) { | |
3155 | j = 2; | |
3156 | break; | |
3157 | } else | |
3158 | j = 0; | |
3159 | } | |
3160 | if (j != 2) | |
3161 | id = -2; | |
8ea2c2ec | 3162 | return id; |
1da177e4 LT |
3163 | } |
3164 | ||
3165 | static void mxser_normal_mode(int port) | |
3166 | { | |
3167 | int i, n; | |
3168 | ||
3169 | outb(0xA5, port + 1); | |
3170 | outb(0x80, port + 3); | |
3171 | outb(12, port + 0); /* 9600 bps */ | |
3172 | outb(0, port + 1); | |
3173 | outb(0x03, port + 3); /* 8 data bits */ | |
3174 | outb(0x13, port + 4); /* loop back mode */ | |
3175 | for (i = 0; i < 16; i++) { | |
3176 | n = inb(port + 5); | |
3177 | if ((n & 0x61) == 0x60) | |
3178 | break; | |
3179 | if ((n & 1) == 1) | |
8ea2c2ec | 3180 | (void)inb(port); |
1da177e4 LT |
3181 | } |
3182 | outb(0x00, port + 4); | |
3183 | } | |
3184 | ||
3185 | module_init(mxser_module_init); | |
3186 | module_exit(mxser_module_exit); |