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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 | |
12 | * (at your option) any later version. | |
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 | ||
39 | #include <linux/config.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/version.h> | |
42 | #include <linux/autoconf.h> | |
43 | #include <linux/errno.h> | |
44 | #include <linux/signal.h> | |
45 | #include <linux/sched.h> | |
46 | #include <linux/timer.h> | |
47 | #include <linux/interrupt.h> | |
48 | #include <linux/tty.h> | |
49 | #include <linux/tty_flip.h> | |
50 | #include <linux/serial.h> | |
51 | #include <linux/serial_reg.h> | |
52 | #include <linux/major.h> | |
53 | #include <linux/string.h> | |
54 | #include <linux/fcntl.h> | |
55 | #include <linux/ptrace.h> | |
56 | #include <linux/gfp.h> | |
57 | #include <linux/ioport.h> | |
58 | #include <linux/mm.h> | |
59 | #include <linux/smp_lock.h> | |
60 | #include <linux/delay.h> | |
61 | #include <linux/pci.h> | |
62 | ||
63 | #include <asm/system.h> | |
64 | #include <asm/io.h> | |
65 | #include <asm/irq.h> | |
1da177e4 LT |
66 | #include <asm/bitops.h> |
67 | #include <asm/uaccess.h> | |
68 | ||
69 | #include "mxser.h" | |
70 | ||
71 | #define MXSER_VERSION "1.8" | |
72 | #define MXSERMAJOR 174 | |
73 | #define MXSERCUMAJOR 175 | |
74 | ||
75 | #define MXSER_EVENT_TXLOW 1 | |
76 | #define MXSER_EVENT_HANGUP 2 | |
77 | ||
78 | #define MXSER_BOARDS 4 /* Max. boards */ | |
79 | #define MXSER_PORTS 32 /* Max. ports */ | |
80 | #define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */ | |
81 | #define MXSER_ISR_PASS_LIMIT 256 | |
82 | ||
83 | #define MXSER_ERR_IOADDR -1 | |
84 | #define MXSER_ERR_IRQ -2 | |
85 | #define MXSER_ERR_IRQ_CONFLIT -3 | |
86 | #define MXSER_ERR_VECTOR -4 | |
87 | ||
88 | #define SERIAL_TYPE_NORMAL 1 | |
89 | #define SERIAL_TYPE_CALLOUT 2 | |
90 | ||
91 | #define WAKEUP_CHARS 256 | |
92 | ||
93 | #define UART_MCR_AFE 0x20 | |
94 | #define UART_LSR_SPECIAL 0x1E | |
95 | ||
96 | #define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|IXON|IXOFF)) | |
97 | ||
98 | #define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? SA_SHIRQ : SA_INTERRUPT) | |
99 | ||
100 | #define C168_ASIC_ID 1 | |
101 | #define C104_ASIC_ID 2 | |
102 | #define C102_ASIC_ID 0xB | |
103 | #define CI132_ASIC_ID 4 | |
104 | #define CI134_ASIC_ID 3 | |
105 | #define CI104J_ASIC_ID 5 | |
106 | ||
107 | enum { | |
108 | MXSER_BOARD_C168_ISA = 1, | |
109 | MXSER_BOARD_C104_ISA, | |
110 | MXSER_BOARD_CI104J, | |
111 | MXSER_BOARD_C168_PCI, | |
112 | MXSER_BOARD_C104_PCI, | |
113 | MXSER_BOARD_C102_ISA, | |
114 | MXSER_BOARD_CI132, | |
115 | MXSER_BOARD_CI134, | |
116 | MXSER_BOARD_CP132, | |
117 | MXSER_BOARD_CP114, | |
118 | MXSER_BOARD_CT114, | |
119 | MXSER_BOARD_CP102, | |
120 | MXSER_BOARD_CP104U, | |
121 | MXSER_BOARD_CP168U, | |
122 | MXSER_BOARD_CP132U, | |
123 | MXSER_BOARD_CP134U, | |
124 | MXSER_BOARD_CP104JU, | |
125 | MXSER_BOARD_RC7000, | |
126 | MXSER_BOARD_CP118U, | |
127 | MXSER_BOARD_CP102UL, | |
128 | MXSER_BOARD_CP102U, | |
129 | }; | |
130 | ||
131 | static char *mxser_brdname[] = { | |
132 | "C168 series", | |
133 | "C104 series", | |
134 | "CI-104J series", | |
135 | "C168H/PCI series", | |
136 | "C104H/PCI series", | |
137 | "C102 series", | |
138 | "CI-132 series", | |
139 | "CI-134 series", | |
140 | "CP-132 series", | |
141 | "CP-114 series", | |
142 | "CT-114 series", | |
143 | "CP-102 series", | |
144 | "CP-104U series", | |
145 | "CP-168U series", | |
146 | "CP-132U series", | |
147 | "CP-134U series", | |
148 | "CP-104JU series", | |
149 | "Moxa UC7000 Serial", | |
150 | "CP-118U series", | |
151 | "CP-102UL series", | |
152 | "CP-102U series", | |
153 | }; | |
154 | ||
155 | static int mxser_numports[] = { | |
156 | 8, // C168-ISA | |
157 | 4, // C104-ISA | |
158 | 4, // CI104J | |
159 | 8, // C168-PCI | |
160 | 4, // C104-PCI | |
161 | 2, // C102-ISA | |
162 | 2, // CI132 | |
163 | 4, // CI134 | |
164 | 2, // CP132 | |
165 | 4, // CP114 | |
166 | 4, // CT114 | |
167 | 2, // CP102 | |
168 | 4, // CP104U | |
169 | 8, // CP168U | |
170 | 2, // CP132U | |
171 | 4, // CP134U | |
172 | 4, // CP104JU | |
173 | 8, // RC7000 | |
174 | 8, // CP118U | |
175 | 2, // CP102UL | |
176 | 2, // CP102U | |
177 | }; | |
178 | ||
179 | #define UART_TYPE_NUM 2 | |
180 | ||
181 | static const unsigned int Gmoxa_uart_id[UART_TYPE_NUM] = { | |
182 | MOXA_MUST_MU150_HWID, | |
183 | MOXA_MUST_MU860_HWID | |
184 | }; | |
185 | ||
186 | // This is only for PCI | |
187 | #define UART_INFO_NUM 3 | |
188 | struct mxpciuart_info { | |
189 | int type; | |
190 | int tx_fifo; | |
191 | int rx_fifo; | |
192 | int xmit_fifo_size; | |
193 | int rx_high_water; | |
194 | int rx_trigger; | |
195 | int rx_low_water; | |
196 | long max_baud; | |
197 | }; | |
198 | ||
199 | static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = { | |
200 | {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L}, | |
201 | {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L}, | |
202 | {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} | |
203 | }; | |
204 | ||
205 | ||
206 | #ifdef CONFIG_PCI | |
207 | ||
208 | static struct pci_device_id mxser_pcibrds[] = { | |
209 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C168_PCI}, | |
210 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C104_PCI}, | |
211 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132}, | |
212 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP114}, | |
213 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CT114}, | |
214 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102}, | |
215 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104U}, | |
216 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP168U}, | |
217 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132U}, | |
218 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP134U}, | |
219 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104JU}, | |
220 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_RC7000}, | |
221 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP118U}, | |
222 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102UL}, | |
223 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102U}, | |
224 | {0} | |
225 | }; | |
226 | ||
227 | MODULE_DEVICE_TABLE(pci, mxser_pcibrds); | |
228 | ||
229 | ||
230 | #endif | |
231 | ||
232 | typedef struct _moxa_pci_info { | |
233 | unsigned short busNum; | |
234 | unsigned short devNum; | |
235 | struct pci_dev *pdev; // add by Victor Yu. 06-23-2003 | |
236 | } moxa_pci_info; | |
237 | ||
238 | static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 }; | |
239 | static int ttymajor = MXSERMAJOR; | |
240 | static int calloutmajor = MXSERCUMAJOR; | |
241 | static int verbose = 0; | |
242 | ||
243 | /* Variables for insmod */ | |
244 | ||
245 | MODULE_AUTHOR("Casper Yang"); | |
246 | MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); | |
247 | MODULE_PARM(ioaddr, "1-4i"); | |
248 | MODULE_PARM(ttymajor, "i"); | |
249 | MODULE_PARM(calloutmajor, "i"); | |
250 | MODULE_PARM(verbose, "i"); | |
251 | MODULE_LICENSE("GPL"); | |
252 | ||
253 | struct mxser_log { | |
254 | int tick; | |
255 | unsigned long rxcnt[MXSER_PORTS]; | |
256 | unsigned long txcnt[MXSER_PORTS]; | |
257 | }; | |
258 | ||
259 | ||
260 | struct mxser_mon { | |
261 | unsigned long rxcnt; | |
262 | unsigned long txcnt; | |
263 | unsigned long up_rxcnt; | |
264 | unsigned long up_txcnt; | |
265 | int modem_status; | |
266 | unsigned char hold_reason; | |
267 | }; | |
268 | ||
269 | struct mxser_mon_ext { | |
270 | unsigned long rx_cnt[32]; | |
271 | unsigned long tx_cnt[32]; | |
272 | unsigned long up_rxcnt[32]; | |
273 | unsigned long up_txcnt[32]; | |
274 | int modem_status[32]; | |
275 | ||
276 | long baudrate[32]; | |
277 | int databits[32]; | |
278 | int stopbits[32]; | |
279 | int parity[32]; | |
280 | int flowctrl[32]; | |
281 | int fifo[32]; | |
282 | int iftype[32]; | |
283 | }; | |
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; | |
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 | |
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; | |
331 | struct termios normal_termios; | |
332 | struct termios callout_termios; | |
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; | |
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 | |
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 | ||
349 | ||
350 | struct mxser_mstatus { | |
351 | tcflag_t cflag; | |
352 | int cts; | |
353 | int dsr; | |
354 | int ri; | |
355 | int dcd; | |
356 | }; | |
357 | ||
358 | static struct mxser_mstatus GMStatus[MXSER_PORTS]; | |
359 | ||
360 | static int mxserBoardCAP[MXSER_BOARDS] = { | |
361 | 0, 0, 0, 0 | |
362 | /* 0x180, 0x280, 0x200, 0x320 */ | |
363 | }; | |
364 | ||
365 | static struct tty_driver *mxvar_sdriver; | |
366 | static struct mxser_struct mxvar_table[MXSER_PORTS]; | |
367 | static struct tty_struct *mxvar_tty[MXSER_PORTS + 1]; | |
368 | static struct termios *mxvar_termios[MXSER_PORTS + 1]; | |
369 | static struct termios *mxvar_termios_locked[MXSER_PORTS + 1]; | |
370 | static struct mxser_log mxvar_log; | |
371 | static int mxvar_diagflag; | |
372 | static unsigned char mxser_msr[MXSER_PORTS + 1]; | |
373 | static struct mxser_mon_ext mon_data_ext; | |
374 | static int mxser_set_baud_method[MXSER_PORTS + 1]; | |
375 | static spinlock_t gm_lock; | |
376 | ||
377 | /* | |
378 | * This is used to figure out the divisor speeds and the timeouts | |
379 | */ | |
380 | ||
381 | static struct mxser_hwconf mxsercfg[MXSER_BOARDS]; | |
382 | ||
383 | /* | |
384 | * static functions: | |
385 | */ | |
386 | ||
387 | static void mxser_getcfg(int board, struct mxser_hwconf *hwconf); | |
388 | static int mxser_init(void); | |
389 | ||
390 | //static void mxser_poll(unsigned long); | |
391 | static int mxser_get_ISA_conf(int, struct mxser_hwconf *); | |
392 | static int mxser_get_PCI_conf(int, int, int, struct mxser_hwconf *); | |
393 | static void mxser_do_softint(void *); | |
394 | static int mxser_open(struct tty_struct *, struct file *); | |
395 | static void mxser_close(struct tty_struct *, struct file *); | |
396 | static int mxser_write(struct tty_struct *, const unsigned char *, int); | |
397 | static int mxser_write_room(struct tty_struct *); | |
398 | static void mxser_flush_buffer(struct tty_struct *); | |
399 | static int mxser_chars_in_buffer(struct tty_struct *); | |
400 | static void mxser_flush_chars(struct tty_struct *); | |
401 | static void mxser_put_char(struct tty_struct *, unsigned char); | |
402 | static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong); | |
403 | static int mxser_ioctl_special(unsigned int, void __user *); | |
404 | static void mxser_throttle(struct tty_struct *); | |
405 | static void mxser_unthrottle(struct tty_struct *); | |
406 | static void mxser_set_termios(struct tty_struct *, struct termios *); | |
407 | static void mxser_stop(struct tty_struct *); | |
408 | static void mxser_start(struct tty_struct *); | |
409 | static void mxser_hangup(struct tty_struct *); | |
410 | static void mxser_rs_break(struct tty_struct *, int); | |
411 | static irqreturn_t mxser_interrupt(int, void *, struct pt_regs *); | |
412 | static void mxser_receive_chars(struct mxser_struct *, int *); | |
413 | static void mxser_transmit_chars(struct mxser_struct *); | |
414 | static void mxser_check_modem_status(struct mxser_struct *, int); | |
415 | static int mxser_block_til_ready(struct tty_struct *, struct file *, struct mxser_struct *); | |
416 | static int mxser_startup(struct mxser_struct *); | |
417 | static void mxser_shutdown(struct mxser_struct *); | |
418 | static int mxser_change_speed(struct mxser_struct *, struct termios *old_termios); | |
419 | static int mxser_get_serial_info(struct mxser_struct *, struct serial_struct __user *); | |
420 | static int mxser_set_serial_info(struct mxser_struct *, struct serial_struct __user *); | |
421 | static int mxser_get_lsr_info(struct mxser_struct *, unsigned int __user *); | |
422 | static void mxser_send_break(struct mxser_struct *, int); | |
423 | static int mxser_tiocmget(struct tty_struct *, struct file *); | |
424 | static int mxser_tiocmset(struct tty_struct *, struct file *, unsigned int, unsigned int); | |
425 | static int mxser_set_baud(struct mxser_struct *info, long newspd); | |
426 | static void mxser_wait_until_sent(struct tty_struct *tty, int timeout); | |
427 | ||
428 | static void mxser_startrx(struct tty_struct *tty); | |
429 | static void mxser_stoprx(struct tty_struct *tty); | |
430 | ||
431 | ||
432 | static int CheckIsMoxaMust(int io) | |
433 | { | |
434 | u8 oldmcr, hwid; | |
435 | int i; | |
436 | ||
437 | outb(0, io + UART_LCR); | |
438 | DISABLE_MOXA_MUST_ENCHANCE_MODE(io); | |
439 | oldmcr = inb(io + UART_MCR); | |
440 | outb(0, io + UART_MCR); | |
441 | SET_MOXA_MUST_XON1_VALUE(io, 0x11); | |
442 | if ((hwid = inb(io + UART_MCR)) != 0) { | |
443 | outb(oldmcr, io + UART_MCR); | |
444 | return (MOXA_OTHER_UART); | |
445 | } | |
446 | ||
447 | GET_MOXA_MUST_HARDWARE_ID(io, &hwid); | |
448 | for (i = 0; i < UART_TYPE_NUM; i++) { | |
449 | if (hwid == Gmoxa_uart_id[i]) | |
450 | return (int) hwid; | |
451 | } | |
452 | return MOXA_OTHER_UART; | |
453 | } | |
454 | ||
455 | // above is modified by Victor Yu. 08-15-2002 | |
456 | ||
457 | static struct tty_operations mxser_ops = { | |
458 | .open = mxser_open, | |
459 | .close = mxser_close, | |
460 | .write = mxser_write, | |
461 | .put_char = mxser_put_char, | |
462 | .flush_chars = mxser_flush_chars, | |
463 | .write_room = mxser_write_room, | |
464 | .chars_in_buffer = mxser_chars_in_buffer, | |
465 | .flush_buffer = mxser_flush_buffer, | |
466 | .ioctl = mxser_ioctl, | |
467 | .throttle = mxser_throttle, | |
468 | .unthrottle = mxser_unthrottle, | |
469 | .set_termios = mxser_set_termios, | |
470 | .stop = mxser_stop, | |
471 | .start = mxser_start, | |
472 | .hangup = mxser_hangup, | |
473 | .tiocmget = mxser_tiocmget, | |
474 | .tiocmset = mxser_tiocmset, | |
475 | }; | |
476 | ||
477 | /* | |
478 | * The MOXA Smartio/Industio serial driver boot-time initialization code! | |
479 | */ | |
480 | ||
481 | static int __init mxser_module_init(void) | |
482 | { | |
483 | int ret; | |
484 | ||
485 | if (verbose) | |
486 | printk(KERN_DEBUG "Loading module mxser ...\n"); | |
487 | ret = mxser_init(); | |
488 | if (verbose) | |
489 | printk(KERN_DEBUG "Done.\n"); | |
490 | return ret; | |
491 | } | |
492 | ||
493 | static void __exit mxser_module_exit(void) | |
494 | { | |
495 | int i, err = 0; | |
496 | ||
497 | if (verbose) | |
498 | printk(KERN_DEBUG "Unloading module mxser ...\n"); | |
499 | ||
500 | if ((err |= tty_unregister_driver(mxvar_sdriver))) | |
501 | printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n"); | |
502 | ||
503 | for (i = 0; i < MXSER_BOARDS; i++) { | |
504 | struct pci_dev *pdev; | |
505 | ||
506 | if (mxsercfg[i].board_type == -1) | |
507 | continue; | |
508 | else { | |
509 | pdev = mxsercfg[i].pciInfo.pdev; | |
510 | free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]); | |
511 | if (pdev != NULL) { //PCI | |
512 | release_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2)); | |
513 | release_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3)); | |
514 | } else { | |
515 | release_region(mxsercfg[i].ioaddr[0], 8 * mxsercfg[i].ports); | |
516 | release_region(mxsercfg[i].vector, 1); | |
517 | } | |
518 | } | |
519 | } | |
520 | if (verbose) | |
521 | printk(KERN_DEBUG "Done.\n"); | |
522 | ||
523 | } | |
524 | ||
525 | static void process_txrx_fifo(struct mxser_struct *info) | |
526 | { | |
527 | int i; | |
528 | ||
529 | if ((info->type == PORT_16450) || (info->type == PORT_8250)) { | |
530 | info->rx_trigger = 1; | |
531 | info->rx_high_water = 1; | |
532 | info->rx_low_water = 1; | |
533 | info->xmit_fifo_size = 1; | |
534 | } else { | |
535 | for (i = 0; i < UART_INFO_NUM; i++) { | |
536 | if (info->IsMoxaMustChipFlag == Gpci_uart_info[i].type) { | |
537 | info->rx_trigger = Gpci_uart_info[i].rx_trigger; | |
538 | info->rx_low_water = Gpci_uart_info[i].rx_low_water; | |
539 | info->rx_high_water = Gpci_uart_info[i].rx_high_water; | |
540 | info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size; | |
541 | break; | |
542 | } | |
543 | } | |
544 | } | |
545 | } | |
546 | ||
547 | static int mxser_initbrd(int board, struct mxser_hwconf *hwconf) | |
548 | { | |
549 | struct mxser_struct *info; | |
550 | int retval; | |
551 | int i, n; | |
552 | ||
553 | n = board * MXSER_PORTS_PER_BOARD; | |
554 | info = &mxvar_table[n]; | |
555 | /*if (verbose) */ { | |
556 | printk(KERN_DEBUG " ttyM%d - ttyM%d ", n, n + hwconf->ports - 1); | |
557 | printk(" max. baud rate = %d bps.\n", hwconf->MaxCanSetBaudRate[0]); | |
558 | } | |
559 | ||
560 | for (i = 0; i < hwconf->ports; i++, n++, info++) { | |
561 | info->port = n; | |
562 | info->base = hwconf->ioaddr[i]; | |
563 | info->irq = hwconf->irq; | |
564 | info->vector = hwconf->vector; | |
565 | info->vectormask = hwconf->vector_mask; | |
566 | info->opmode_ioaddr = hwconf->opmode_ioaddr[i]; // add by Victor Yu. 01-05-2004 | |
567 | info->stop_rx = 0; | |
568 | info->ldisc_stop_rx = 0; | |
569 | ||
570 | info->IsMoxaMustChipFlag = hwconf->IsMoxaMustChipFlag; | |
571 | //Enhance mode enabled here | |
572 | if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) { | |
573 | ENABLE_MOXA_MUST_ENCHANCE_MODE(info->base); | |
574 | } | |
575 | ||
576 | info->flags = ASYNC_SHARE_IRQ; | |
577 | info->type = hwconf->uart_type; | |
578 | info->baud_base = hwconf->baud_base[i]; | |
579 | ||
580 | info->MaxCanSetBaudRate = hwconf->MaxCanSetBaudRate[i]; | |
581 | ||
582 | process_txrx_fifo(info); | |
583 | ||
584 | ||
585 | info->custom_divisor = hwconf->baud_base[i] * 16; | |
586 | info->close_delay = 5 * HZ / 10; | |
587 | info->closing_wait = 30 * HZ; | |
588 | INIT_WORK(&info->tqueue, mxser_do_softint, info); | |
589 | info->normal_termios = mxvar_sdriver->init_termios; | |
590 | init_waitqueue_head(&info->open_wait); | |
591 | init_waitqueue_head(&info->close_wait); | |
592 | init_waitqueue_head(&info->delta_msr_wait); | |
593 | memset(&info->mon_data, 0, sizeof(struct mxser_mon)); | |
594 | info->err_shadow = 0; | |
595 | spin_lock_init(&info->slock); | |
596 | } | |
597 | /* | |
598 | * Allocate the IRQ if necessary | |
599 | */ | |
600 | ||
601 | ||
602 | /* before set INT ISR, disable all int */ | |
603 | for (i = 0; i < hwconf->ports; i++) { | |
604 | outb(inb(hwconf->ioaddr[i] + UART_IER) & 0xf0, hwconf->ioaddr[i] + UART_IER); | |
605 | } | |
606 | ||
607 | n = board * MXSER_PORTS_PER_BOARD; | |
608 | info = &mxvar_table[n]; | |
609 | ||
610 | retval = request_irq(hwconf->irq, mxser_interrupt, IRQ_T(info), "mxser", info); | |
611 | if (retval) { | |
612 | printk(KERN_ERR "Board %d: %s", board, mxser_brdname[hwconf->board_type - 1]); | |
613 | printk(" Request irq fail,IRQ (%d) may be conflit with another device.\n", info->irq); | |
614 | return retval; | |
615 | } | |
616 | return 0; | |
617 | } | |
618 | ||
619 | ||
620 | static void mxser_getcfg(int board, struct mxser_hwconf *hwconf) | |
621 | { | |
622 | mxsercfg[board] = *hwconf; | |
623 | } | |
624 | ||
625 | #ifdef CONFIG_PCI | |
626 | static int mxser_get_PCI_conf(int busnum, int devnum, int board_type, struct mxser_hwconf *hwconf) | |
627 | { | |
628 | int i, j; | |
629 | // unsigned int val; | |
630 | unsigned int ioaddress; | |
631 | struct pci_dev *pdev = hwconf->pciInfo.pdev; | |
632 | ||
633 | //io address | |
634 | hwconf->board_type = board_type; | |
635 | hwconf->ports = mxser_numports[board_type - 1]; | |
636 | ioaddress = pci_resource_start(pdev, 2); | |
637 | request_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2), "mxser(IO)"); | |
638 | ||
639 | for (i = 0; i < hwconf->ports; i++) { | |
640 | hwconf->ioaddr[i] = ioaddress + 8 * i; | |
641 | } | |
642 | ||
643 | //vector | |
644 | ioaddress = pci_resource_start(pdev, 3); | |
645 | request_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3), "mxser(vector)"); | |
646 | hwconf->vector = ioaddress; | |
647 | ||
648 | //irq | |
649 | hwconf->irq = hwconf->pciInfo.pdev->irq; | |
650 | ||
651 | hwconf->IsMoxaMustChipFlag = CheckIsMoxaMust(hwconf->ioaddr[0]); | |
652 | hwconf->uart_type = PORT_16550A; | |
653 | hwconf->vector_mask = 0; | |
654 | ||
655 | ||
656 | for (i = 0; i < hwconf->ports; i++) { | |
657 | for (j = 0; j < UART_INFO_NUM; j++) { | |
658 | if (Gpci_uart_info[j].type == hwconf->IsMoxaMustChipFlag) { | |
659 | hwconf->MaxCanSetBaudRate[i] = Gpci_uart_info[j].max_baud; | |
660 | ||
661 | //exception....CP-102 | |
662 | if (board_type == MXSER_BOARD_CP102) | |
663 | hwconf->MaxCanSetBaudRate[i] = 921600; | |
664 | break; | |
665 | } | |
666 | } | |
667 | } | |
668 | ||
669 | if (hwconf->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID) { | |
670 | for (i = 0; i < hwconf->ports; i++) { | |
671 | if (i < 4) | |
672 | hwconf->opmode_ioaddr[i] = ioaddress + 4; | |
673 | else | |
674 | hwconf->opmode_ioaddr[i] = ioaddress + 0x0c; | |
675 | } | |
676 | outb(0, ioaddress + 4); // default set to RS232 mode | |
677 | outb(0, ioaddress + 0x0c); //default set to RS232 mode | |
678 | } | |
679 | ||
680 | for (i = 0; i < hwconf->ports; i++) { | |
681 | hwconf->vector_mask |= (1 << i); | |
682 | hwconf->baud_base[i] = 921600; | |
683 | } | |
684 | return (0); | |
685 | } | |
686 | #endif | |
687 | ||
688 | static int mxser_init(void) | |
689 | { | |
690 | int i, m, retval, b, n; | |
691 | int ret1; | |
692 | struct pci_dev *pdev = NULL; | |
693 | int index; | |
694 | unsigned char busnum, devnum; | |
695 | struct mxser_hwconf hwconf; | |
696 | ||
697 | mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); | |
698 | if (!mxvar_sdriver) | |
699 | return -ENOMEM; | |
700 | spin_lock_init(&gm_lock); | |
701 | ||
702 | for (i = 0; i < MXSER_BOARDS; i++) { | |
703 | mxsercfg[i].board_type = -1; | |
704 | } | |
705 | ||
706 | printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", MXSER_VERSION); | |
707 | ||
708 | /* Initialize the tty_driver structure */ | |
709 | memset(mxvar_sdriver, 0, sizeof(struct tty_driver)); | |
710 | mxvar_sdriver->magic = TTY_DRIVER_MAGIC; | |
711 | mxvar_sdriver->name = "ttyM"; | |
712 | mxvar_sdriver->major = ttymajor; | |
713 | mxvar_sdriver->minor_start = 0; | |
714 | mxvar_sdriver->num = MXSER_PORTS + 1; | |
715 | mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL; | |
716 | mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL; | |
717 | mxvar_sdriver->init_termios = tty_std_termios; | |
718 | mxvar_sdriver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
719 | mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW; | |
720 | tty_set_operations(mxvar_sdriver, &mxser_ops); | |
721 | mxvar_sdriver->ttys = mxvar_tty; | |
722 | mxvar_sdriver->termios = mxvar_termios; | |
723 | mxvar_sdriver->termios_locked = mxvar_termios_locked; | |
724 | ||
725 | mxvar_sdriver->open = mxser_open; | |
726 | mxvar_sdriver->close = mxser_close; | |
727 | mxvar_sdriver->write = mxser_write; | |
728 | mxvar_sdriver->put_char = mxser_put_char; | |
729 | mxvar_sdriver->flush_chars = mxser_flush_chars; | |
730 | mxvar_sdriver->write_room = mxser_write_room; | |
731 | mxvar_sdriver->chars_in_buffer = mxser_chars_in_buffer; | |
732 | mxvar_sdriver->flush_buffer = mxser_flush_buffer; | |
733 | mxvar_sdriver->ioctl = mxser_ioctl; | |
734 | mxvar_sdriver->throttle = mxser_throttle; | |
735 | mxvar_sdriver->unthrottle = mxser_unthrottle; | |
736 | mxvar_sdriver->set_termios = mxser_set_termios; | |
737 | mxvar_sdriver->stop = mxser_stop; | |
738 | mxvar_sdriver->start = mxser_start; | |
739 | mxvar_sdriver->hangup = mxser_hangup; | |
740 | mxvar_sdriver->break_ctl = mxser_rs_break; | |
741 | mxvar_sdriver->wait_until_sent = mxser_wait_until_sent; | |
742 | ||
743 | mxvar_diagflag = 0; | |
744 | memset(mxvar_table, 0, MXSER_PORTS * sizeof(struct mxser_struct)); | |
745 | memset(&mxvar_log, 0, sizeof(struct mxser_log)); | |
746 | ||
747 | memset(&mxser_msr, 0, sizeof(unsigned char) * (MXSER_PORTS + 1)); | |
748 | memset(&mon_data_ext, 0, sizeof(struct mxser_mon_ext)); | |
749 | memset(&mxser_set_baud_method, 0, sizeof(int) * (MXSER_PORTS + 1)); | |
750 | memset(&hwconf, 0, sizeof(struct mxser_hwconf)); | |
751 | ||
752 | m = 0; | |
753 | /* Start finding ISA boards here */ | |
754 | for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { | |
755 | int cap; | |
756 | if (!(cap = mxserBoardCAP[b])) | |
757 | continue; | |
758 | ||
759 | retval = mxser_get_ISA_conf(cap, &hwconf); | |
760 | ||
761 | if (retval != 0) | |
762 | printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", mxser_brdname[hwconf.board_type - 1], ioaddr[b]); | |
763 | ||
764 | if (retval <= 0) { | |
765 | if (retval == MXSER_ERR_IRQ) | |
766 | printk(KERN_ERR "Invalid interrupt number,board not configured\n"); | |
767 | else if (retval == MXSER_ERR_IRQ_CONFLIT) | |
768 | printk(KERN_ERR "Invalid interrupt number,board not configured\n"); | |
769 | else if (retval == MXSER_ERR_VECTOR) | |
770 | printk(KERN_ERR "Invalid interrupt vector,board not configured\n"); | |
771 | else if (retval == MXSER_ERR_IOADDR) | |
772 | printk(KERN_ERR "Invalid I/O address,board not configured\n"); | |
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); | |
782 | //init mxsercfg first, or mxsercfg data is not correct on ISR. | |
783 | //mxser_initbrd will hook ISR. | |
784 | if (mxser_initbrd(m, &hwconf) < 0) | |
785 | continue; | |
786 | ||
787 | ||
788 | m++; | |
789 | } | |
790 | ||
791 | /* Start finding ISA boards from module arg */ | |
792 | for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { | |
793 | int cap; | |
794 | if (!(cap = ioaddr[b])) | |
795 | continue; | |
796 | ||
797 | retval = mxser_get_ISA_conf(cap, &hwconf); | |
798 | ||
799 | if (retval != 0) | |
800 | printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", mxser_brdname[hwconf.board_type - 1], ioaddr[b]); | |
801 | ||
802 | if (retval <= 0) { | |
803 | if (retval == MXSER_ERR_IRQ) | |
804 | printk(KERN_ERR "Invalid interrupt number,board not configured\n"); | |
805 | else if (retval == MXSER_ERR_IRQ_CONFLIT) | |
806 | printk(KERN_ERR "Invalid interrupt number,board not configured\n"); | |
807 | else if (retval == MXSER_ERR_VECTOR) | |
808 | printk(KERN_ERR "Invalid interrupt vector,board not configured\n"); | |
809 | else if (retval == MXSER_ERR_IOADDR) | |
810 | printk(KERN_ERR "Invalid I/O address,board not configured\n"); | |
811 | ||
812 | continue; | |
813 | } | |
814 | ||
815 | hwconf.pciInfo.busNum = 0; | |
816 | hwconf.pciInfo.devNum = 0; | |
817 | hwconf.pciInfo.pdev = NULL; | |
818 | ||
819 | mxser_getcfg(m, &hwconf); | |
820 | //init mxsercfg first, or mxsercfg data is not correct on ISR. | |
821 | //mxser_initbrd will hook ISR. | |
822 | if (mxser_initbrd(m, &hwconf) < 0) | |
823 | continue; | |
824 | ||
825 | m++; | |
826 | } | |
827 | ||
828 | /* start finding PCI board here */ | |
829 | #ifdef CONFIG_PCI | |
830 | n = (sizeof(mxser_pcibrds) / sizeof(mxser_pcibrds[0])) - 1; | |
831 | index = 0; | |
832 | b = 0; | |
833 | while (b < n) { | |
834 | pdev = pci_find_device(mxser_pcibrds[b].vendor, mxser_pcibrds[b].device, pdev); | |
835 | if (pdev == NULL) { | |
836 | b++; | |
837 | continue; | |
838 | } | |
839 | hwconf.pciInfo.busNum = busnum = pdev->bus->number; | |
840 | hwconf.pciInfo.devNum = devnum = PCI_SLOT(pdev->devfn) << 3; | |
841 | hwconf.pciInfo.pdev = pdev; | |
842 | printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n", mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1], busnum, devnum >> 3); | |
843 | index++; | |
844 | if (m >= MXSER_BOARDS) { | |
845 | printk(KERN_ERR "Too many Smartio/Industio family boards find (maximum %d),board not configured\n", MXSER_BOARDS); | |
846 | } else { | |
847 | if (pci_enable_device(pdev)) { | |
848 | printk(KERN_ERR "Moxa SmartI/O PCI enable fail !\n"); | |
849 | continue; | |
850 | } | |
851 | retval = mxser_get_PCI_conf(busnum, devnum, (int) mxser_pcibrds[b].driver_data, &hwconf); | |
852 | if (retval < 0) { | |
853 | if (retval == MXSER_ERR_IRQ) | |
854 | printk(KERN_ERR "Invalid interrupt number,board not configured\n"); | |
855 | else if (retval == MXSER_ERR_IRQ_CONFLIT) | |
856 | printk(KERN_ERR "Invalid interrupt number,board not configured\n"); | |
857 | else if (retval == MXSER_ERR_VECTOR) | |
858 | printk(KERN_ERR "Invalid interrupt vector,board not configured\n"); | |
859 | else if (retval == MXSER_ERR_IOADDR) | |
860 | printk(KERN_ERR "Invalid I/O address,board not configured\n"); | |
861 | continue; | |
862 | } | |
863 | mxser_getcfg(m, &hwconf); | |
864 | //init mxsercfg first, or mxsercfg data is not correct on ISR. | |
865 | //mxser_initbrd will hook ISR. | |
866 | if (mxser_initbrd(m, &hwconf) < 0) | |
867 | continue; | |
868 | m++; | |
869 | } | |
870 | } | |
871 | #endif | |
872 | ||
873 | ret1 = 0; | |
874 | if (!(ret1 = tty_register_driver(mxvar_sdriver))) { | |
875 | return 0; | |
876 | } else | |
877 | printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family driver !\n"); | |
878 | ||
879 | ||
880 | if (ret1) { | |
881 | for (i = 0; i < MXSER_BOARDS; i++) { | |
882 | if (mxsercfg[i].board_type == -1) | |
883 | continue; | |
884 | else { | |
885 | free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]); | |
886 | //todo: release io, vector | |
887 | } | |
888 | } | |
889 | return -1; | |
890 | } | |
891 | ||
892 | return (0); | |
893 | } | |
894 | ||
895 | static void mxser_do_softint(void *private_) | |
896 | { | |
897 | struct mxser_struct *info = (struct mxser_struct *) private_; | |
898 | struct tty_struct *tty; | |
899 | ||
900 | tty = info->tty; | |
901 | ||
902 | if (tty) { | |
903 | if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event)) | |
904 | tty_wakeup(tty); | |
905 | if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event)) | |
906 | tty_hangup(tty); | |
907 | } | |
908 | } | |
909 | ||
910 | static unsigned char mxser_get_msr(int baseaddr, int mode, int port, struct mxser_struct *info) | |
911 | { | |
912 | unsigned char status = 0; | |
913 | ||
914 | status = inb(baseaddr + UART_MSR); | |
915 | ||
916 | mxser_msr[port] &= 0x0F; | |
917 | mxser_msr[port] |= status; | |
918 | status = mxser_msr[port]; | |
919 | if (mode) | |
920 | mxser_msr[port] = 0; | |
921 | ||
922 | return status; | |
923 | } | |
924 | ||
925 | /* | |
926 | * This routine is called whenever a serial port is opened. It | |
927 | * enables interrupts for a serial port, linking in its async structure into | |
928 | * the IRQ chain. It also performs the serial-specific | |
929 | * initialization for the tty structure. | |
930 | */ | |
931 | static int mxser_open(struct tty_struct *tty, struct file *filp) | |
932 | { | |
933 | struct mxser_struct *info; | |
934 | int retval, line; | |
935 | ||
936 | line = tty->index; | |
937 | if (line == MXSER_PORTS) | |
938 | return 0; | |
939 | if (line < 0 || line > MXSER_PORTS) | |
940 | return -ENODEV; | |
941 | info = mxvar_table + line; | |
942 | if (!info->base) | |
943 | return (-ENODEV); | |
944 | ||
945 | tty->driver_data = info; | |
946 | info->tty = tty; | |
947 | /* | |
948 | * Start up serial port | |
949 | */ | |
950 | retval = mxser_startup(info); | |
951 | if (retval) | |
952 | return (retval); | |
953 | ||
954 | retval = mxser_block_til_ready(tty, filp, info); | |
955 | if (retval) | |
956 | return (retval); | |
957 | ||
958 | info->count++; | |
959 | ||
960 | if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) { | |
961 | if (tty->driver->subtype == SERIAL_TYPE_NORMAL) | |
962 | *tty->termios = info->normal_termios; | |
963 | else | |
964 | *tty->termios = info->callout_termios; | |
965 | mxser_change_speed(info, NULL); | |
966 | } | |
967 | ||
968 | info->session = current->signal->session; | |
969 | info->pgrp = process_group(current); | |
970 | clear_bit(TTY_DONT_FLIP, &tty->flags); | |
971 | ||
972 | //status = mxser_get_msr(info->base, 0, info->port); | |
973 | //mxser_check_modem_status(info, status); | |
974 | ||
975 | /* unmark here for very high baud rate (ex. 921600 bps) used | |
976 | */ | |
977 | tty->low_latency = 1; | |
978 | return 0; | |
979 | } | |
980 | ||
981 | /* | |
982 | * This routine is called when the serial port gets closed. First, we | |
983 | * wait for the last remaining data to be sent. Then, we unlink its | |
984 | * async structure from the interrupt chain if necessary, and we free | |
985 | * that IRQ if nothing is left in the chain. | |
986 | */ | |
987 | static void mxser_close(struct tty_struct *tty, struct file *filp) | |
988 | { | |
989 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
990 | ||
991 | unsigned long timeout; | |
992 | unsigned long flags; | |
993 | struct tty_ldisc *ld; | |
994 | ||
995 | if (tty->index == MXSER_PORTS) | |
996 | return; | |
997 | if (!info) | |
998 | BUG(); | |
999 | ||
1000 | spin_lock_irqsave(&info->slock, flags); | |
1001 | ||
1002 | if (tty_hung_up_p(filp)) { | |
1003 | spin_unlock_irqrestore(&info->slock, flags); | |
1004 | return; | |
1005 | } | |
1006 | if ((tty->count == 1) && (info->count != 1)) { | |
1007 | /* | |
1008 | * Uh, oh. tty->count is 1, which means that the tty | |
1009 | * structure will be freed. Info->count should always | |
1010 | * be one in these conditions. If it's greater than | |
1011 | * one, we've got real problems, since it means the | |
1012 | * serial port won't be shutdown. | |
1013 | */ | |
1014 | printk(KERN_ERR "mxser_close: bad serial port count; tty->count is 1, " "info->count is %d\n", info->count); | |
1015 | info->count = 1; | |
1016 | } | |
1017 | if (--info->count < 0) { | |
1018 | printk(KERN_ERR "mxser_close: bad serial port count for ttys%d: %d\n", info->port, info->count); | |
1019 | info->count = 0; | |
1020 | } | |
1021 | if (info->count) { | |
1022 | spin_unlock_irqrestore(&info->slock, flags); | |
1023 | return; | |
1024 | } | |
1025 | info->flags |= ASYNC_CLOSING; | |
1026 | spin_unlock_irqrestore(&info->slock, flags); | |
1027 | /* | |
1028 | * Save the termios structure, since this port may have | |
1029 | * separate termios for callout and dialin. | |
1030 | */ | |
1031 | if (info->flags & ASYNC_NORMAL_ACTIVE) | |
1032 | info->normal_termios = *tty->termios; | |
1033 | /* | |
1034 | * Now we wait for the transmit buffer to clear; and we notify | |
1035 | * the line discipline to only process XON/XOFF characters. | |
1036 | */ | |
1037 | tty->closing = 1; | |
1038 | if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) | |
1039 | tty_wait_until_sent(tty, info->closing_wait); | |
1040 | /* | |
1041 | * At this point we stop accepting input. To do this, we | |
1042 | * disable the receive line status interrupts, and tell the | |
1043 | * interrupt driver to stop checking the data ready bit in the | |
1044 | * line status register. | |
1045 | */ | |
1046 | info->IER &= ~UART_IER_RLSI; | |
1047 | if (info->IsMoxaMustChipFlag) | |
1048 | info->IER &= ~MOXA_MUST_RECV_ISR; | |
1049 | /* by William | |
1050 | info->read_status_mask &= ~UART_LSR_DR; | |
1051 | */ | |
1052 | if (info->flags & ASYNC_INITIALIZED) { | |
1053 | outb(info->IER, info->base + UART_IER); | |
1054 | /* | |
1055 | * Before we drop DTR, make sure the UART transmitter | |
1056 | * has completely drained; this is especially | |
1057 | * important if there is a transmit FIFO! | |
1058 | */ | |
1059 | timeout = jiffies + HZ; | |
1060 | while (!(inb(info->base + UART_LSR) & UART_LSR_TEMT)) { | |
da4cd8df | 1061 | schedule_timeout_interruptible(5); |
1da177e4 LT |
1062 | if (time_after(jiffies, timeout)) |
1063 | break; | |
1064 | } | |
1065 | } | |
1066 | mxser_shutdown(info); | |
1067 | ||
1068 | if (tty->driver->flush_buffer) | |
1069 | tty->driver->flush_buffer(tty); | |
1070 | ||
1071 | ld = tty_ldisc_ref(tty); | |
1072 | if (ld) { | |
1073 | if(ld->flush_buffer) | |
1074 | ld->flush_buffer(tty); | |
1075 | tty_ldisc_deref(ld); | |
1076 | } | |
1077 | ||
1078 | tty->closing = 0; | |
1079 | info->event = 0; | |
1080 | info->tty = NULL; | |
1081 | if (info->blocked_open) { | |
da4cd8df NA |
1082 | if (info->close_delay) |
1083 | schedule_timeout_interruptible(info->close_delay); | |
1da177e4 LT |
1084 | wake_up_interruptible(&info->open_wait); |
1085 | } | |
1086 | ||
1087 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); | |
1088 | wake_up_interruptible(&info->close_wait); | |
1089 | ||
1090 | } | |
1091 | ||
1092 | static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1093 | { | |
1094 | int c, total = 0; | |
1095 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1096 | unsigned long flags; | |
1097 | ||
1098 | if (!tty || !info->xmit_buf) | |
1099 | return (0); | |
1100 | ||
1101 | while (1) { | |
1102 | c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, SERIAL_XMIT_SIZE - info->xmit_head)); | |
1103 | if (c <= 0) | |
1104 | break; | |
1105 | ||
1106 | memcpy(info->xmit_buf + info->xmit_head, buf, c); | |
1107 | spin_lock_irqsave(&info->slock, flags); | |
1108 | info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE - 1); | |
1109 | info->xmit_cnt += c; | |
1110 | spin_unlock_irqrestore(&info->slock, flags); | |
1111 | ||
1112 | buf += c; | |
1113 | count -= c; | |
1114 | total += c; | |
1115 | ||
1116 | } | |
1117 | ||
1118 | if (info->xmit_cnt && !tty->stopped && !(info->IER & UART_IER_THRI)) { | |
1119 | if (!tty->hw_stopped || (info->type == PORT_16550A) || (info->IsMoxaMustChipFlag)) { | |
1120 | spin_lock_irqsave(&info->slock, flags); | |
1121 | info->IER |= UART_IER_THRI; | |
1122 | outb(info->IER, info->base + UART_IER); | |
1123 | spin_unlock_irqrestore(&info->slock, flags); | |
1124 | } | |
1125 | } | |
1126 | return total; | |
1127 | } | |
1128 | ||
1129 | static void mxser_put_char(struct tty_struct *tty, unsigned char ch) | |
1130 | { | |
1131 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1132 | unsigned long flags; | |
1133 | ||
1134 | if (!tty || !info->xmit_buf) | |
1135 | return; | |
1136 | ||
1137 | if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) | |
1138 | return; | |
1139 | ||
1140 | spin_lock_irqsave(&info->slock, flags); | |
1141 | info->xmit_buf[info->xmit_head++] = ch; | |
1142 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; | |
1143 | info->xmit_cnt++; | |
1144 | spin_unlock_irqrestore(&info->slock, flags); | |
1145 | if (!tty->stopped && !(info->IER & UART_IER_THRI)) { | |
1146 | if (!tty->hw_stopped || (info->type == PORT_16550A) || info->IsMoxaMustChipFlag) { | |
1147 | spin_lock_irqsave(&info->slock, flags); | |
1148 | info->IER |= UART_IER_THRI; | |
1149 | outb(info->IER, info->base + UART_IER); | |
1150 | spin_unlock_irqrestore(&info->slock, flags); | |
1151 | } | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | ||
1156 | static void mxser_flush_chars(struct tty_struct *tty) | |
1157 | { | |
1158 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1159 | unsigned long flags; | |
1160 | ||
1161 | if (info->xmit_cnt <= 0 || tty->stopped || !info->xmit_buf || (tty->hw_stopped && (info->type != PORT_16550A) && (!info->IsMoxaMustChipFlag))) | |
1162 | return; | |
1163 | ||
1164 | spin_lock_irqsave(&info->slock, flags); | |
1165 | ||
1166 | info->IER |= UART_IER_THRI; | |
1167 | outb(info->IER, info->base + UART_IER); | |
1168 | ||
1169 | spin_unlock_irqrestore(&info->slock, flags); | |
1170 | } | |
1171 | ||
1172 | static int mxser_write_room(struct tty_struct *tty) | |
1173 | { | |
1174 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1175 | int ret; | |
1176 | ||
1177 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1178 | if (ret < 0) | |
1179 | ret = 0; | |
1180 | return (ret); | |
1181 | } | |
1182 | ||
1183 | static int mxser_chars_in_buffer(struct tty_struct *tty) | |
1184 | { | |
1185 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1186 | return info->xmit_cnt; | |
1187 | } | |
1188 | ||
1189 | static void mxser_flush_buffer(struct tty_struct *tty) | |
1190 | { | |
1191 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1192 | char fcr; | |
1193 | unsigned long flags; | |
1194 | ||
1195 | ||
1196 | spin_lock_irqsave(&info->slock, flags); | |
1197 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1198 | ||
1199 | /* below added by shinhay */ | |
1200 | fcr = inb(info->base + UART_FCR); | |
1201 | outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), info->base + UART_FCR); | |
1202 | outb(fcr, info->base + UART_FCR); | |
1203 | ||
1204 | spin_unlock_irqrestore(&info->slock, flags); | |
1205 | /* above added by shinhay */ | |
1206 | ||
1207 | wake_up_interruptible(&tty->write_wait); | |
1208 | if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) | |
1209 | (tty->ldisc.write_wakeup) (tty); | |
1210 | } | |
1211 | ||
1212 | static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1213 | { | |
1214 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1215 | int retval; | |
1216 | struct async_icount cprev, cnow; /* kernel counter temps */ | |
1217 | struct serial_icounter_struct __user *p_cuser; | |
1218 | unsigned long templ; | |
1219 | unsigned long flags; | |
1220 | void __user *argp = (void __user *)arg; | |
1221 | ||
1222 | if (tty->index == MXSER_PORTS) | |
1223 | return (mxser_ioctl_special(cmd, argp)); | |
1224 | ||
1225 | // following add by Victor Yu. 01-05-2004 | |
1226 | if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { | |
1227 | int opmode, p; | |
1228 | static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f }; | |
1229 | int shiftbit; | |
1230 | unsigned char val, mask; | |
1231 | ||
1232 | p = info->port % 4; | |
1233 | if (cmd == MOXA_SET_OP_MODE) { | |
1234 | if (get_user(opmode, (int __user *) argp)) | |
1235 | return -EFAULT; | |
1236 | if (opmode != RS232_MODE && opmode != RS485_2WIRE_MODE && opmode != RS422_MODE && opmode != RS485_4WIRE_MODE) | |
1237 | return -EFAULT; | |
1238 | mask = ModeMask[p]; | |
1239 | shiftbit = p * 2; | |
1240 | val = inb(info->opmode_ioaddr); | |
1241 | val &= mask; | |
1242 | val |= (opmode << shiftbit); | |
1243 | outb(val, info->opmode_ioaddr); | |
1244 | } else { | |
1245 | shiftbit = p * 2; | |
1246 | opmode = inb(info->opmode_ioaddr) >> shiftbit; | |
1247 | opmode &= OP_MODE_MASK; | |
1248 | if (copy_to_user(argp, &opmode, sizeof(int))) | |
1249 | return -EFAULT; | |
1250 | } | |
1251 | return 0; | |
1252 | } | |
1253 | // above add by Victor Yu. 01-05-2004 | |
1254 | ||
1255 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { | |
1256 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
1257 | return (-EIO); | |
1258 | } | |
1259 | switch (cmd) { | |
1260 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | |
1261 | retval = tty_check_change(tty); | |
1262 | if (retval) | |
1263 | return (retval); | |
1264 | tty_wait_until_sent(tty, 0); | |
1265 | if (!arg) | |
1266 | mxser_send_break(info, HZ / 4); /* 1/4 second */ | |
1267 | return (0); | |
1268 | case TCSBRKP: /* support for POSIX tcsendbreak() */ | |
1269 | retval = tty_check_change(tty); | |
1270 | if (retval) | |
1271 | return (retval); | |
1272 | tty_wait_until_sent(tty, 0); | |
1273 | mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4); | |
1274 | return (0); | |
1275 | case TIOCGSOFTCAR: | |
1276 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp); | |
1277 | case TIOCSSOFTCAR: | |
1278 | if (get_user(templ, (unsigned long __user *) argp)) | |
1279 | return -EFAULT; | |
1280 | arg = templ; | |
1281 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); | |
1282 | return (0); | |
1283 | case TIOCGSERIAL: | |
1284 | return mxser_get_serial_info(info, argp); | |
1285 | case TIOCSSERIAL: | |
1286 | return mxser_set_serial_info(info, argp); | |
1287 | case TIOCSERGETLSR: /* Get line status register */ | |
1288 | return mxser_get_lsr_info(info, argp); | |
1289 | /* | |
1290 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
1291 | * - mask passed in arg for lines of interest | |
1292 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
1293 | * Caller should use TIOCGICOUNT to see which one it was | |
1294 | */ | |
1295 | case TIOCMIWAIT:{ | |
1296 | DECLARE_WAITQUEUE(wait, current); | |
1297 | int ret; | |
1298 | spin_lock_irqsave(&info->slock, flags); | |
1299 | cprev = info->icount; /* note the counters on entry */ | |
1300 | spin_unlock_irqrestore(&info->slock, flags); | |
1301 | ||
1302 | add_wait_queue(&info->delta_msr_wait, &wait); | |
1303 | while (1) { | |
1304 | spin_lock_irqsave(&info->slock, flags); | |
1305 | cnow = info->icount; /* atomic copy */ | |
1306 | spin_unlock_irqrestore(&info->slock, flags); | |
1307 | ||
1308 | set_current_state(TASK_INTERRUPTIBLE); | |
1309 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
1310 | ret = 0; | |
1311 | break; | |
1312 | } | |
1313 | /* see if a signal did it */ | |
1314 | if (signal_pending(current)) { | |
1315 | ret = -ERESTARTSYS; | |
1316 | break; | |
1317 | } | |
1318 | cprev = cnow; | |
1319 | } | |
1320 | current->state = TASK_RUNNING; | |
1321 | remove_wait_queue(&info->delta_msr_wait, &wait); | |
1322 | break; | |
1323 | } | |
1324 | /* NOTREACHED */ | |
1325 | /* | |
1326 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
1327 | * Return: write counters to the user passed counter struct | |
1328 | * NB: both 1->0 and 0->1 transitions are counted except for | |
1329 | * RI where only 0->1 is counted. | |
1330 | */ | |
1331 | case TIOCGICOUNT: | |
1332 | spin_lock_irqsave(&info->slock, flags); | |
1333 | cnow = info->icount; | |
1334 | spin_unlock_irqrestore(&info->slock, flags); | |
1335 | p_cuser = argp; | |
1336 | /* modified by casper 1/11/2000 */ | |
1337 | if (put_user(cnow.frame, &p_cuser->frame)) | |
1338 | return -EFAULT; | |
1339 | if (put_user(cnow.brk, &p_cuser->brk)) | |
1340 | return -EFAULT; | |
1341 | if (put_user(cnow.overrun, &p_cuser->overrun)) | |
1342 | return -EFAULT; | |
1343 | if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun)) | |
1344 | return -EFAULT; | |
1345 | if (put_user(cnow.parity, &p_cuser->parity)) | |
1346 | return -EFAULT; | |
1347 | if (put_user(cnow.rx, &p_cuser->rx)) | |
1348 | return -EFAULT; | |
1349 | if (put_user(cnow.tx, &p_cuser->tx)) | |
1350 | return -EFAULT; | |
1351 | put_user(cnow.cts, &p_cuser->cts); | |
1352 | put_user(cnow.dsr, &p_cuser->dsr); | |
1353 | put_user(cnow.rng, &p_cuser->rng); | |
1354 | put_user(cnow.dcd, &p_cuser->dcd); | |
1355 | ||
1356 | /* */ | |
1357 | return 0; | |
1358 | case MOXA_HighSpeedOn: | |
1359 | return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *) argp); | |
1360 | ||
1361 | case MOXA_SDS_RSTICOUNTER:{ | |
1362 | info->mon_data.rxcnt = 0; | |
1363 | info->mon_data.txcnt = 0; | |
1364 | return 0; | |
1365 | } | |
1366 | // (above) added by James. | |
1367 | case MOXA_ASPP_SETBAUD:{ | |
1368 | long baud; | |
1369 | if (get_user(baud, (long __user *) argp)) | |
1370 | return -EFAULT; | |
1371 | mxser_set_baud(info, baud); | |
1372 | return 0; | |
1373 | } | |
1374 | case MOXA_ASPP_GETBAUD: | |
1375 | if (copy_to_user(argp, &info->realbaud, sizeof(long))) | |
1376 | return -EFAULT; | |
1377 | ||
1378 | return 0; | |
1379 | ||
1380 | case MOXA_ASPP_OQUEUE:{ | |
1381 | int len, lsr; | |
1382 | ||
1383 | len = mxser_chars_in_buffer(tty); | |
1384 | ||
1385 | lsr = inb(info->base + UART_LSR) & UART_LSR_TEMT; | |
1386 | ||
1387 | len += (lsr ? 0 : 1); | |
1388 | ||
1389 | if (copy_to_user(argp, &len, sizeof(int))) | |
1390 | return -EFAULT; | |
1391 | ||
1392 | return 0; | |
1393 | } | |
1394 | case MOXA_ASPP_MON:{ | |
1395 | int mcr, status; | |
1396 | // info->mon_data.ser_param = tty->termios->c_cflag; | |
1397 | ||
1398 | status = mxser_get_msr(info->base, 1, info->port, info); | |
1399 | mxser_check_modem_status(info, status); | |
1400 | ||
1401 | mcr = inb(info->base + UART_MCR); | |
1402 | if (mcr & MOXA_MUST_MCR_XON_FLAG) | |
1403 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD; | |
1404 | else | |
1405 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD; | |
1406 | ||
1407 | if (mcr & MOXA_MUST_MCR_TX_XON) | |
1408 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT; | |
1409 | else | |
1410 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT; | |
1411 | ||
1412 | if (info->tty->hw_stopped) | |
1413 | info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; | |
1414 | else | |
1415 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; | |
1416 | ||
1417 | ||
1418 | if (copy_to_user(argp, &info->mon_data, sizeof(struct mxser_mon))) | |
1419 | return -EFAULT; | |
1420 | ||
1421 | return 0; | |
1422 | ||
1423 | } | |
1424 | ||
1425 | case MOXA_ASPP_LSTATUS:{ | |
1426 | if (copy_to_user(argp, &info->err_shadow, sizeof(unsigned char))) | |
1427 | return -EFAULT; | |
1428 | ||
1429 | info->err_shadow = 0; | |
1430 | return 0; | |
1431 | ||
1432 | } | |
1433 | case MOXA_SET_BAUD_METHOD:{ | |
1434 | int method; | |
1435 | if (get_user(method, (int __user *) argp)) | |
1436 | return -EFAULT; | |
1437 | mxser_set_baud_method[info->port] = method; | |
1438 | if (copy_to_user(argp, &method, sizeof(int))) | |
1439 | return -EFAULT; | |
1440 | ||
1441 | return 0; | |
1442 | } | |
1443 | default: | |
1444 | return -ENOIOCTLCMD; | |
1445 | } | |
1446 | return 0; | |
1447 | } | |
1448 | ||
1449 | #ifndef CMSPAR | |
1450 | #define CMSPAR 010000000000 | |
1451 | #endif | |
1452 | ||
1453 | static int mxser_ioctl_special(unsigned int cmd, void __user *argp) | |
1454 | { | |
1455 | int i, result, status; | |
1456 | ||
1457 | switch (cmd) { | |
1458 | case MOXA_GET_CONF: | |
1459 | if (copy_to_user(argp, mxsercfg, sizeof(struct mxser_hwconf) * 4)) | |
1460 | return -EFAULT; | |
1461 | return 0; | |
1462 | case MOXA_GET_MAJOR: | |
1463 | if (copy_to_user(argp, &ttymajor, sizeof(int))) | |
1464 | return -EFAULT; | |
1465 | return 0; | |
1466 | ||
1467 | case MOXA_GET_CUMAJOR: | |
1468 | if (copy_to_user(argp, &calloutmajor, sizeof(int))) | |
1469 | return -EFAULT; | |
1470 | return 0; | |
1471 | ||
1472 | case MOXA_CHKPORTENABLE: | |
1473 | result = 0; | |
1474 | for (i = 0; i < MXSER_PORTS; i++) { | |
1475 | if (mxvar_table[i].base) | |
1476 | result |= (1 << i); | |
1477 | } | |
1478 | return put_user(result, (unsigned long __user *) argp); | |
1479 | case MOXA_GETDATACOUNT: | |
1480 | if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log))) | |
1481 | return -EFAULT; | |
1482 | return (0); | |
1483 | case MOXA_GETMSTATUS: | |
1484 | for (i = 0; i < MXSER_PORTS; i++) { | |
1485 | GMStatus[i].ri = 0; | |
1486 | if (!mxvar_table[i].base) { | |
1487 | GMStatus[i].dcd = 0; | |
1488 | GMStatus[i].dsr = 0; | |
1489 | GMStatus[i].cts = 0; | |
1490 | continue; | |
1491 | } | |
1492 | ||
1493 | if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios) | |
1494 | GMStatus[i].cflag = mxvar_table[i].normal_termios.c_cflag; | |
1495 | else | |
1496 | GMStatus[i].cflag = mxvar_table[i].tty->termios->c_cflag; | |
1497 | ||
1498 | status = inb(mxvar_table[i].base + UART_MSR); | |
1499 | if (status & 0x80 /*UART_MSR_DCD */ ) | |
1500 | GMStatus[i].dcd = 1; | |
1501 | else | |
1502 | GMStatus[i].dcd = 0; | |
1503 | ||
1504 | if (status & 0x20 /*UART_MSR_DSR */ ) | |
1505 | GMStatus[i].dsr = 1; | |
1506 | else | |
1507 | GMStatus[i].dsr = 0; | |
1508 | ||
1509 | ||
1510 | if (status & 0x10 /*UART_MSR_CTS */ ) | |
1511 | GMStatus[i].cts = 1; | |
1512 | else | |
1513 | GMStatus[i].cts = 0; | |
1514 | } | |
1515 | if (copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MXSER_PORTS)) | |
1516 | return -EFAULT; | |
1517 | return 0; | |
1518 | case MOXA_ASPP_MON_EXT:{ | |
1519 | int status; | |
1520 | int opmode, p; | |
1521 | int shiftbit; | |
1522 | unsigned cflag, iflag; | |
1523 | ||
1524 | for (i = 0; i < MXSER_PORTS; i++) { | |
1525 | ||
1526 | if (!mxvar_table[i].base) | |
1527 | continue; | |
1528 | ||
1529 | status = mxser_get_msr(mxvar_table[i].base, 0, i, &(mxvar_table[i])); | |
1530 | // mxser_check_modem_status(&mxvar_table[i], status); | |
1531 | if (status & UART_MSR_TERI) | |
1532 | mxvar_table[i].icount.rng++; | |
1533 | if (status & UART_MSR_DDSR) | |
1534 | mxvar_table[i].icount.dsr++; | |
1535 | if (status & UART_MSR_DDCD) | |
1536 | mxvar_table[i].icount.dcd++; | |
1537 | if (status & UART_MSR_DCTS) | |
1538 | mxvar_table[i].icount.cts++; | |
1539 | ||
1540 | mxvar_table[i].mon_data.modem_status = status; | |
1541 | mon_data_ext.rx_cnt[i] = mxvar_table[i].mon_data.rxcnt; | |
1542 | mon_data_ext.tx_cnt[i] = mxvar_table[i].mon_data.txcnt; | |
1543 | mon_data_ext.up_rxcnt[i] = mxvar_table[i].mon_data.up_rxcnt; | |
1544 | mon_data_ext.up_txcnt[i] = mxvar_table[i].mon_data.up_txcnt; | |
1545 | mon_data_ext.modem_status[i] = mxvar_table[i].mon_data.modem_status; | |
1546 | mon_data_ext.baudrate[i] = mxvar_table[i].realbaud; | |
1547 | ||
1548 | if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios) { | |
1549 | cflag = mxvar_table[i].normal_termios.c_cflag; | |
1550 | iflag = mxvar_table[i].normal_termios.c_iflag; | |
1551 | } else { | |
1552 | cflag = mxvar_table[i].tty->termios->c_cflag; | |
1553 | iflag = mxvar_table[i].tty->termios->c_iflag; | |
1554 | } | |
1555 | ||
1556 | mon_data_ext.databits[i] = cflag & CSIZE; | |
1557 | ||
1558 | mon_data_ext.stopbits[i] = cflag & CSTOPB; | |
1559 | ||
1560 | mon_data_ext.parity[i] = cflag & (PARENB | PARODD | CMSPAR); | |
1561 | ||
1562 | mon_data_ext.flowctrl[i] = 0x00; | |
1563 | ||
1564 | if (cflag & CRTSCTS) | |
1565 | mon_data_ext.flowctrl[i] |= 0x03; | |
1566 | ||
1567 | if (iflag & (IXON | IXOFF)) | |
1568 | mon_data_ext.flowctrl[i] |= 0x0C; | |
1569 | ||
1570 | if (mxvar_table[i].type == PORT_16550A) | |
1571 | mon_data_ext.fifo[i] = 1; | |
1572 | else | |
1573 | mon_data_ext.fifo[i] = 0; | |
1574 | ||
1575 | p = i % 4; | |
1576 | shiftbit = p * 2; | |
1577 | opmode = inb(mxvar_table[i].opmode_ioaddr) >> shiftbit; | |
1578 | opmode &= OP_MODE_MASK; | |
1579 | ||
1580 | mon_data_ext.iftype[i] = opmode; | |
1581 | ||
1582 | } | |
1583 | if (copy_to_user(argp, &mon_data_ext, sizeof(struct mxser_mon_ext))) | |
1584 | return -EFAULT; | |
1585 | ||
1586 | return 0; | |
1587 | ||
1588 | } | |
1589 | default: | |
1590 | return -ENOIOCTLCMD; | |
1591 | } | |
1592 | return 0; | |
1593 | } | |
1594 | ||
1595 | ||
1596 | static void mxser_stoprx(struct tty_struct *tty) | |
1597 | { | |
1598 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1599 | //unsigned long flags; | |
1600 | ||
1601 | ||
1602 | info->ldisc_stop_rx = 1; | |
1603 | if (I_IXOFF(tty)) { | |
1604 | ||
1605 | //MX_LOCK(&info->slock); | |
1606 | // following add by Victor Yu. 09-02-2002 | |
1607 | if (info->IsMoxaMustChipFlag) { | |
1608 | info->IER &= ~MOXA_MUST_RECV_ISR; | |
1609 | outb(info->IER, info->base + UART_IER); | |
1610 | } else { | |
1611 | // above add by Victor Yu. 09-02-2002 | |
1612 | ||
1613 | info->x_char = STOP_CHAR(tty); | |
1614 | // outb(info->IER, 0); // mask by Victor Yu. 09-02-2002 | |
1615 | outb(0, info->base + UART_IER); | |
1616 | info->IER |= UART_IER_THRI; | |
1617 | outb(info->IER, info->base + UART_IER); /* force Tx interrupt */ | |
1618 | } // add by Victor Yu. 09-02-2002 | |
1619 | //MX_UNLOCK(&info->slock); | |
1620 | } | |
1621 | ||
1622 | if (info->tty->termios->c_cflag & CRTSCTS) { | |
1623 | //MX_LOCK(&info->slock); | |
1624 | info->MCR &= ~UART_MCR_RTS; | |
1625 | outb(info->MCR, info->base + UART_MCR); | |
1626 | //MX_UNLOCK(&info->slock); | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | static void mxser_startrx(struct tty_struct *tty) | |
1631 | { | |
1632 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1633 | //unsigned long flags; | |
1634 | ||
1635 | info->ldisc_stop_rx = 0; | |
1636 | if (I_IXOFF(tty)) { | |
1637 | if (info->x_char) | |
1638 | info->x_char = 0; | |
1639 | else { | |
1640 | //MX_LOCK(&info->slock); | |
1641 | ||
1642 | // following add by Victor Yu. 09-02-2002 | |
1643 | if (info->IsMoxaMustChipFlag) { | |
1644 | info->IER |= MOXA_MUST_RECV_ISR; | |
1645 | outb(info->IER, info->base + UART_IER); | |
1646 | } else { | |
1647 | // above add by Victor Yu. 09-02-2002 | |
1648 | ||
1649 | info->x_char = START_CHAR(tty); | |
1650 | // outb(info->IER, 0); // mask by Victor Yu. 09-02-2002 | |
1651 | outb(0, info->base + UART_IER); // add by Victor Yu. 09-02-2002 | |
1652 | info->IER |= UART_IER_THRI; /* force Tx interrupt */ | |
1653 | outb(info->IER, info->base + UART_IER); | |
1654 | } // add by Victor Yu. 09-02-2002 | |
1655 | //MX_UNLOCK(&info->slock); | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | if (info->tty->termios->c_cflag & CRTSCTS) { | |
1660 | //MX_LOCK(&info->slock); | |
1661 | info->MCR |= UART_MCR_RTS; | |
1662 | outb(info->MCR, info->base + UART_MCR); | |
1663 | //MX_UNLOCK(&info->slock); | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | /* | |
1668 | * This routine is called by the upper-layer tty layer to signal that | |
1669 | * incoming characters should be throttled. | |
1670 | */ | |
1671 | static void mxser_throttle(struct tty_struct *tty) | |
1672 | { | |
1673 | //struct mxser_struct *info = (struct mxser_struct *)tty->driver_data; | |
1674 | //unsigned long flags; | |
1675 | //MX_LOCK(&info->slock); | |
1676 | mxser_stoprx(tty); | |
1677 | //MX_UNLOCK(&info->slock); | |
1678 | } | |
1679 | ||
1680 | static void mxser_unthrottle(struct tty_struct *tty) | |
1681 | { | |
1682 | //struct mxser_struct *info = (struct mxser_struct *)tty->driver_data; | |
1683 | //unsigned long flags; | |
1684 | //MX_LOCK(&info->slock); | |
1685 | mxser_startrx(tty); | |
1686 | //MX_UNLOCK(&info->slock); | |
1687 | } | |
1688 | ||
1689 | static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios) | |
1690 | { | |
1691 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1692 | unsigned long flags; | |
1693 | ||
1694 | if ((tty->termios->c_cflag != old_termios->c_cflag) || (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) { | |
1695 | ||
1696 | mxser_change_speed(info, old_termios); | |
1697 | ||
1698 | if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { | |
1699 | tty->hw_stopped = 0; | |
1700 | mxser_start(tty); | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | /* Handle sw stopped */ | |
1705 | if ((old_termios->c_iflag & IXON) && !(tty->termios->c_iflag & IXON)) { | |
1706 | tty->stopped = 0; | |
1707 | ||
1708 | // following add by Victor Yu. 09-02-2002 | |
1709 | if (info->IsMoxaMustChipFlag) { | |
1710 | spin_lock_irqsave(&info->slock, flags); | |
1711 | DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | |
1712 | spin_unlock_irqrestore(&info->slock, flags); | |
1713 | } | |
1714 | // above add by Victor Yu. 09-02-2002 | |
1715 | ||
1716 | mxser_start(tty); | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | /* | |
1721 | * mxser_stop() and mxser_start() | |
1722 | * | |
1723 | * This routines are called before setting or resetting tty->stopped. | |
1724 | * They enable or disable transmitter interrupts, as necessary. | |
1725 | */ | |
1726 | static void mxser_stop(struct tty_struct *tty) | |
1727 | { | |
1728 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1729 | unsigned long flags; | |
1730 | ||
1731 | spin_lock_irqsave(&info->slock, flags); | |
1732 | if (info->IER & UART_IER_THRI) { | |
1733 | info->IER &= ~UART_IER_THRI; | |
1734 | outb(info->IER, info->base + UART_IER); | |
1735 | } | |
1736 | spin_unlock_irqrestore(&info->slock, flags); | |
1737 | } | |
1738 | ||
1739 | static void mxser_start(struct tty_struct *tty) | |
1740 | { | |
1741 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1742 | unsigned long flags; | |
1743 | ||
1744 | spin_lock_irqsave(&info->slock, flags); | |
1745 | if (info->xmit_cnt && info->xmit_buf && !(info->IER & UART_IER_THRI)) { | |
1746 | info->IER |= UART_IER_THRI; | |
1747 | outb(info->IER, info->base + UART_IER); | |
1748 | } | |
1749 | spin_unlock_irqrestore(&info->slock, flags); | |
1750 | } | |
1751 | ||
1752 | /* | |
1753 | * mxser_wait_until_sent() --- wait until the transmitter is empty | |
1754 | */ | |
1755 | static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) | |
1756 | { | |
1757 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1758 | unsigned long orig_jiffies, char_time; | |
1759 | int lsr; | |
1760 | ||
1761 | if (info->type == PORT_UNKNOWN) | |
1762 | return; | |
1763 | ||
1764 | if (info->xmit_fifo_size == 0) | |
1765 | return; /* Just in case.... */ | |
1766 | ||
1767 | orig_jiffies = jiffies; | |
1768 | /* | |
1769 | * Set the check interval to be 1/5 of the estimated time to | |
1770 | * send a single character, and make it at least 1. The check | |
1771 | * interval should also be less than the timeout. | |
1772 | * | |
1773 | * Note: we have to use pretty tight timings here to satisfy | |
1774 | * the NIST-PCTS. | |
1775 | */ | |
1776 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1777 | char_time = char_time / 5; | |
1778 | if (char_time == 0) | |
1779 | char_time = 1; | |
1780 | if (timeout && timeout < char_time) | |
1781 | char_time = timeout; | |
1782 | /* | |
1783 | * If the transmitter hasn't cleared in twice the approximate | |
1784 | * amount of time to send the entire FIFO, it probably won't | |
1785 | * ever clear. This assumes the UART isn't doing flow | |
1786 | * control, which is currently the case. Hence, if it ever | |
1787 | * takes longer than info->timeout, this is probably due to a | |
1788 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1789 | * 2*info->timeout. | |
1790 | */ | |
1791 | if (!timeout || timeout > 2 * info->timeout) | |
1792 | timeout = 2 * info->timeout; | |
1793 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | |
1794 | printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...", timeout, char_time); | |
1795 | printk("jiff=%lu...", jiffies); | |
1796 | #endif | |
1797 | while (!((lsr = inb(info->base + UART_LSR)) & UART_LSR_TEMT)) { | |
1798 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | |
1799 | printk("lsr = %d (jiff=%lu)...", lsr, jiffies); | |
1800 | #endif | |
da4cd8df | 1801 | schedule_timeout_interruptible(char_time); |
1da177e4 LT |
1802 | if (signal_pending(current)) |
1803 | break; | |
1804 | if (timeout && time_after(jiffies, orig_jiffies + timeout)) | |
1805 | break; | |
1806 | } | |
1807 | set_current_state(TASK_RUNNING); | |
1808 | ||
1809 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | |
1810 | printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); | |
1811 | #endif | |
1812 | } | |
1813 | ||
1814 | ||
1815 | /* | |
1816 | * This routine is called by tty_hangup() when a hangup is signaled. | |
1817 | */ | |
1818 | void mxser_hangup(struct tty_struct *tty) | |
1819 | { | |
1820 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1821 | ||
1822 | mxser_flush_buffer(tty); | |
1823 | mxser_shutdown(info); | |
1824 | info->event = 0; | |
1825 | info->count = 0; | |
1826 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | |
1827 | info->tty = NULL; | |
1828 | wake_up_interruptible(&info->open_wait); | |
1829 | } | |
1830 | ||
1831 | ||
1832 | // added by James 03-12-2004. | |
1833 | /* | |
1834 | * mxser_rs_break() --- routine which turns the break handling on or off | |
1835 | */ | |
1836 | static void mxser_rs_break(struct tty_struct *tty, int break_state) | |
1837 | { | |
1838 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
1839 | unsigned long flags; | |
1840 | ||
1841 | spin_lock_irqsave(&info->slock, flags); | |
1842 | if (break_state == -1) | |
1843 | outb(inb(info->base + UART_LCR) | UART_LCR_SBC, info->base + UART_LCR); | |
1844 | else | |
1845 | outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC, info->base + UART_LCR); | |
1846 | spin_unlock_irqrestore(&info->slock, flags); | |
1847 | } | |
1848 | ||
1849 | // (above) added by James. | |
1850 | ||
1851 | ||
1852 | /* | |
1853 | * This is the serial driver's generic interrupt routine | |
1854 | */ | |
1855 | static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
1856 | { | |
1857 | int status, iir, i; | |
1858 | struct mxser_struct *info; | |
1859 | struct mxser_struct *port; | |
1860 | int max, irqbits, bits, msr; | |
1861 | int pass_counter = 0; | |
1862 | int handled = IRQ_NONE; | |
1863 | ||
1864 | port = NULL; | |
1865 | //spin_lock(&gm_lock); | |
1866 | ||
1867 | for (i = 0; i < MXSER_BOARDS; i++) { | |
1868 | if (dev_id == &(mxvar_table[i * MXSER_PORTS_PER_BOARD])) { | |
1869 | port = dev_id; | |
1870 | break; | |
1871 | } | |
1872 | } | |
1873 | ||
1874 | if (i == MXSER_BOARDS) { | |
1875 | goto irq_stop; | |
1876 | } | |
1877 | if (port == 0) { | |
1878 | goto irq_stop; | |
1879 | } | |
1880 | max = mxser_numports[mxsercfg[i].board_type - 1]; | |
1881 | while (1) { | |
1882 | irqbits = inb(port->vector) & port->vectormask; | |
1883 | if (irqbits == port->vectormask) { | |
1884 | break; | |
1885 | } | |
1886 | ||
1887 | handled = IRQ_HANDLED; | |
1888 | for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) { | |
1889 | if (irqbits == port->vectormask) { | |
1890 | break; | |
1891 | } | |
1892 | if (bits & irqbits) | |
1893 | continue; | |
1894 | info = port + i; | |
1895 | ||
1896 | // following add by Victor Yu. 09-13-2002 | |
1897 | iir = inb(info->base + UART_IIR); | |
1898 | if (iir & UART_IIR_NO_INT) | |
1899 | continue; | |
1900 | iir &= MOXA_MUST_IIR_MASK; | |
1901 | if (!info->tty) { | |
1902 | status = inb(info->base + UART_LSR); | |
1903 | outb(0x27, info->base + UART_FCR); | |
1904 | inb(info->base + UART_MSR); | |
1905 | continue; | |
1906 | } | |
1907 | // above add by Victor Yu. 09-13-2002 | |
1908 | /* | |
1909 | if ( info->tty->flip.count < TTY_FLIPBUF_SIZE/4 ){ | |
1910 | info->IER |= MOXA_MUST_RECV_ISR; | |
1911 | outb(info->IER, info->base + UART_IER); | |
1912 | } | |
1913 | */ | |
1914 | ||
1915 | ||
1916 | /* mask by Victor Yu. 09-13-2002 | |
1917 | if ( !info->tty || | |
1918 | (inb(info->base + UART_IIR) & UART_IIR_NO_INT) ) | |
1919 | continue; | |
1920 | */ | |
1921 | /* mask by Victor Yu. 09-02-2002 | |
1922 | status = inb(info->base + UART_LSR) & info->read_status_mask; | |
1923 | */ | |
1924 | ||
1925 | // following add by Victor Yu. 09-02-2002 | |
1926 | status = inb(info->base + UART_LSR); | |
1927 | ||
1928 | if (status & UART_LSR_PE) { | |
1929 | info->err_shadow |= NPPI_NOTIFY_PARITY; | |
1930 | } | |
1931 | if (status & UART_LSR_FE) { | |
1932 | info->err_shadow |= NPPI_NOTIFY_FRAMING; | |
1933 | } | |
1934 | if (status & UART_LSR_OE) { | |
1935 | info->err_shadow |= NPPI_NOTIFY_HW_OVERRUN; | |
1936 | } | |
1937 | if (status & UART_LSR_BI) | |
1938 | info->err_shadow |= NPPI_NOTIFY_BREAK; | |
1939 | ||
1940 | if (info->IsMoxaMustChipFlag) { | |
1941 | /* | |
1942 | if ( (status & 0x02) && !(status & 0x01) ) { | |
1943 | outb(info->base+UART_FCR, 0x23); | |
1944 | continue; | |
1945 | } | |
1946 | */ | |
1947 | if (iir == MOXA_MUST_IIR_GDA || iir == MOXA_MUST_IIR_RDA || iir == MOXA_MUST_IIR_RTO || iir == MOXA_MUST_IIR_LSR) | |
1948 | mxser_receive_chars(info, &status); | |
1949 | ||
1950 | } else { | |
1951 | // above add by Victor Yu. 09-02-2002 | |
1952 | ||
1953 | status &= info->read_status_mask; | |
1954 | if (status & UART_LSR_DR) | |
1955 | mxser_receive_chars(info, &status); | |
1956 | } | |
1957 | msr = inb(info->base + UART_MSR); | |
1958 | if (msr & UART_MSR_ANY_DELTA) { | |
1959 | mxser_check_modem_status(info, msr); | |
1960 | } | |
1961 | // following add by Victor Yu. 09-13-2002 | |
1962 | if (info->IsMoxaMustChipFlag) { | |
1963 | if ((iir == 0x02) && (status & UART_LSR_THRE)) { | |
1964 | mxser_transmit_chars(info); | |
1965 | } | |
1966 | } else { | |
1967 | // above add by Victor Yu. 09-13-2002 | |
1968 | ||
1969 | if (status & UART_LSR_THRE) { | |
1970 | /* 8-2-99 by William | |
1971 | if ( info->x_char || (info->xmit_cnt > 0) ) | |
1972 | */ | |
1973 | mxser_transmit_chars(info); | |
1974 | } | |
1975 | } | |
1976 | } | |
1977 | if (pass_counter++ > MXSER_ISR_PASS_LIMIT) { | |
1978 | break; /* Prevent infinite loops */ | |
1979 | } | |
1980 | } | |
1981 | ||
1982 | irq_stop: | |
1983 | //spin_unlock(&gm_lock); | |
1984 | return handled; | |
1985 | } | |
1986 | ||
1987 | static void mxser_receive_chars(struct mxser_struct *info, int *status) | |
1988 | { | |
1989 | struct tty_struct *tty = info->tty; | |
1990 | unsigned char ch, gdl; | |
1991 | int ignored = 0; | |
1992 | int cnt = 0; | |
1da177e4 LT |
1993 | int recv_room; |
1994 | int max = 256; | |
1995 | unsigned long flags; | |
1996 | ||
1997 | spin_lock_irqsave(&info->slock, flags); | |
1998 | ||
1999 | recv_room = tty->ldisc.receive_room(tty); | |
2000 | if ((recv_room == 0) && (!info->ldisc_stop_rx)) { | |
2001 | //mxser_throttle(tty); | |
2002 | mxser_stoprx(tty); | |
2003 | //return; | |
2004 | } | |
2005 | ||
1da177e4 LT |
2006 | // following add by Victor Yu. 09-02-2002 |
2007 | if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) { | |
2008 | ||
2009 | if (*status & UART_LSR_SPECIAL) { | |
2010 | goto intr_old; | |
2011 | } | |
2012 | // following add by Victor Yu. 02-11-2004 | |
2013 | if (info->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID && (*status & MOXA_MUST_LSR_RERR)) | |
2014 | goto intr_old; | |
2015 | // above add by Victor Yu. 02-14-2004 | |
2016 | if (*status & MOXA_MUST_LSR_RERR) | |
2017 | goto intr_old; | |
2018 | ||
2019 | gdl = inb(info->base + MOXA_MUST_GDL_REGISTER); | |
2020 | ||
2021 | if (info->IsMoxaMustChipFlag == MOXA_MUST_MU150_HWID) // add by Victor Yu. 02-11-2004 | |
2022 | gdl &= MOXA_MUST_GDL_MASK; | |
2023 | if (gdl >= recv_room) { | |
2024 | if (!info->ldisc_stop_rx) { | |
2025 | //mxser_throttle(tty); | |
2026 | mxser_stoprx(tty); | |
2027 | } | |
2028 | //return; | |
2029 | } | |
2030 | while (gdl--) { | |
2031 | ch = inb(info->base + UART_RX); | |
3399ba5b | 2032 | tty_insert_flip_char(tty, ch, 0); |
1da177e4 LT |
2033 | cnt++; |
2034 | /* | |
3399ba5b | 2035 | if((cnt>=HI_WATER) && (info->stop_rx==0)){ |
1da177e4 LT |
2036 | mxser_stoprx(tty); |
2037 | info->stop_rx=1; | |
2038 | break; | |
2039 | } */ | |
2040 | } | |
2041 | goto end_intr; | |
2042 | } | |
2043 | intr_old: | |
2044 | // above add by Victor Yu. 09-02-2002 | |
2045 | ||
2046 | do { | |
2047 | if (max-- < 0) | |
2048 | break; | |
2049 | /* | |
3399ba5b | 2050 | if((cnt>=HI_WATER) && (info->stop_rx==0)){ |
1da177e4 LT |
2051 | mxser_stoprx(tty); |
2052 | info->stop_rx=1; | |
2053 | break; | |
2054 | } | |
2055 | */ | |
2056 | ||
2057 | ch = inb(info->base + UART_RX); | |
2058 | // following add by Victor Yu. 09-02-2002 | |
2059 | if (info->IsMoxaMustChipFlag && (*status & UART_LSR_OE) /*&& !(*status&UART_LSR_DR) */ ) | |
2060 | outb(0x23, info->base + UART_FCR); | |
2061 | *status &= info->read_status_mask; | |
2062 | // above add by Victor Yu. 09-02-2002 | |
2063 | if (*status & info->ignore_status_mask) { | |
2064 | if (++ignored > 100) | |
2065 | break; | |
2066 | } else { | |
3399ba5b | 2067 | char flag = 0; |
1da177e4 LT |
2068 | if (*status & UART_LSR_SPECIAL) { |
2069 | if (*status & UART_LSR_BI) { | |
3399ba5b | 2070 | flag = TTY_BREAK; |
1da177e4 LT |
2071 | /* added by casper 1/11/2000 */ |
2072 | info->icount.brk++; | |
1da177e4 LT |
2073 | /* */ |
2074 | if (info->flags & ASYNC_SAK) | |
2075 | do_SAK(tty); | |
2076 | } else if (*status & UART_LSR_PE) { | |
3399ba5b | 2077 | flag = TTY_PARITY; |
1da177e4 LT |
2078 | /* added by casper 1/11/2000 */ |
2079 | info->icount.parity++; | |
2080 | /* */ | |
2081 | } else if (*status & UART_LSR_FE) { | |
3399ba5b | 2082 | flag = TTY_FRAME; |
1da177e4 LT |
2083 | /* added by casper 1/11/2000 */ |
2084 | info->icount.frame++; | |
2085 | /* */ | |
2086 | } else if (*status & UART_LSR_OE) { | |
3399ba5b | 2087 | flag = TTY_OVERRUN; |
1da177e4 LT |
2088 | /* added by casper 1/11/2000 */ |
2089 | info->icount.overrun++; | |
2090 | /* */ | |
3399ba5b DV |
2091 | } |
2092 | } | |
2093 | tty_insert_flip_char(tty, ch, flag); | |
1da177e4 LT |
2094 | cnt++; |
2095 | if (cnt >= recv_room) { | |
2096 | if (!info->ldisc_stop_rx) { | |
2097 | //mxser_throttle(tty); | |
2098 | mxser_stoprx(tty); | |
2099 | } | |
2100 | break; | |
2101 | } | |
2102 | ||
2103 | } | |
2104 | ||
2105 | // following add by Victor Yu. 09-02-2002 | |
2106 | if (info->IsMoxaMustChipFlag) | |
2107 | break; | |
2108 | // above add by Victor Yu. 09-02-2002 | |
2109 | ||
2110 | /* mask by Victor Yu. 09-02-2002 | |
2111 | *status = inb(info->base + UART_LSR) & info->read_status_mask; | |
2112 | */ | |
2113 | // following add by Victor Yu. 09-02-2002 | |
2114 | *status = inb(info->base + UART_LSR); | |
2115 | // above add by Victor Yu. 09-02-2002 | |
2116 | } while (*status & UART_LSR_DR); | |
2117 | ||
3399ba5b | 2118 | end_intr: // add by Victor Yu. 09-02-2002 |
1da177e4 LT |
2119 | |
2120 | mxvar_log.rxcnt[info->port] += cnt; | |
2121 | info->mon_data.rxcnt += cnt; | |
2122 | info->mon_data.up_rxcnt += cnt; | |
2123 | spin_unlock_irqrestore(&info->slock, flags); | |
3399ba5b | 2124 | |
1da177e4 LT |
2125 | tty_flip_buffer_push(tty); |
2126 | } | |
2127 | ||
2128 | static void mxser_transmit_chars(struct mxser_struct *info) | |
2129 | { | |
2130 | int count, cnt; | |
2131 | unsigned long flags; | |
2132 | ||
2133 | spin_lock_irqsave(&info->slock, flags); | |
2134 | ||
2135 | if (info->x_char) { | |
2136 | outb(info->x_char, info->base + UART_TX); | |
2137 | info->x_char = 0; | |
2138 | mxvar_log.txcnt[info->port]++; | |
2139 | info->mon_data.txcnt++; | |
2140 | info->mon_data.up_txcnt++; | |
2141 | ||
2142 | /* added by casper 1/11/2000 */ | |
2143 | info->icount.tx++; | |
2144 | /* */ | |
2145 | spin_unlock_irqrestore(&info->slock, flags); | |
2146 | return; | |
2147 | } | |
2148 | ||
2149 | if (info->xmit_buf == 0) { | |
2150 | spin_unlock_irqrestore(&info->slock, flags); | |
2151 | return; | |
2152 | } | |
2153 | ||
2154 | if ((info->xmit_cnt <= 0) || info->tty->stopped || (info->tty->hw_stopped && (info->type != PORT_16550A) && (!info->IsMoxaMustChipFlag))) { | |
2155 | info->IER &= ~UART_IER_THRI; | |
2156 | outb(info->IER, info->base + UART_IER); | |
2157 | spin_unlock_irqrestore(&info->slock, flags); | |
2158 | return; | |
2159 | } | |
2160 | ||
2161 | cnt = info->xmit_cnt; | |
2162 | count = info->xmit_fifo_size; | |
2163 | do { | |
2164 | outb(info->xmit_buf[info->xmit_tail++], info->base + UART_TX); | |
2165 | info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE - 1); | |
2166 | if (--info->xmit_cnt <= 0) | |
2167 | break; | |
2168 | } while (--count > 0); | |
2169 | mxvar_log.txcnt[info->port] += (cnt - info->xmit_cnt); | |
2170 | ||
2171 | // added by James 03-12-2004. | |
2172 | info->mon_data.txcnt += (cnt - info->xmit_cnt); | |
2173 | info->mon_data.up_txcnt += (cnt - info->xmit_cnt); | |
2174 | // (above) added by James. | |
2175 | ||
2176 | /* added by casper 1/11/2000 */ | |
2177 | info->icount.tx += (cnt - info->xmit_cnt); | |
2178 | /* */ | |
2179 | ||
2180 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
2181 | set_bit(MXSER_EVENT_TXLOW, &info->event); | |
2182 | schedule_work(&info->tqueue); | |
2183 | } | |
2184 | if (info->xmit_cnt <= 0) { | |
2185 | info->IER &= ~UART_IER_THRI; | |
2186 | outb(info->IER, info->base + UART_IER); | |
2187 | } | |
2188 | spin_unlock_irqrestore(&info->slock, flags); | |
2189 | } | |
2190 | ||
2191 | static void mxser_check_modem_status(struct mxser_struct *info, int status) | |
2192 | { | |
2193 | /* update input line counters */ | |
2194 | if (status & UART_MSR_TERI) | |
2195 | info->icount.rng++; | |
2196 | if (status & UART_MSR_DDSR) | |
2197 | info->icount.dsr++; | |
2198 | if (status & UART_MSR_DDCD) | |
2199 | info->icount.dcd++; | |
2200 | if (status & UART_MSR_DCTS) | |
2201 | info->icount.cts++; | |
2202 | info->mon_data.modem_status = status; | |
2203 | wake_up_interruptible(&info->delta_msr_wait); | |
2204 | ||
2205 | ||
2206 | if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { | |
2207 | if (status & UART_MSR_DCD) | |
2208 | wake_up_interruptible(&info->open_wait); | |
2209 | schedule_work(&info->tqueue); | |
2210 | } | |
2211 | ||
2212 | if (info->flags & ASYNC_CTS_FLOW) { | |
2213 | if (info->tty->hw_stopped) { | |
2214 | if (status & UART_MSR_CTS) { | |
2215 | info->tty->hw_stopped = 0; | |
2216 | ||
2217 | if ((info->type != PORT_16550A) && (!info->IsMoxaMustChipFlag)) { | |
2218 | info->IER |= UART_IER_THRI; | |
2219 | outb(info->IER, info->base + UART_IER); | |
2220 | } | |
2221 | set_bit(MXSER_EVENT_TXLOW, &info->event); | |
2222 | schedule_work(&info->tqueue); } | |
2223 | } else { | |
2224 | if (!(status & UART_MSR_CTS)) { | |
2225 | info->tty->hw_stopped = 1; | |
2226 | if ((info->type != PORT_16550A) && (!info->IsMoxaMustChipFlag)) { | |
2227 | info->IER &= ~UART_IER_THRI; | |
2228 | outb(info->IER, info->base + UART_IER); | |
2229 | } | |
2230 | } | |
2231 | } | |
2232 | } | |
2233 | } | |
2234 | ||
2235 | static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_struct *info) | |
2236 | { | |
2237 | DECLARE_WAITQUEUE(wait, current); | |
2238 | int retval; | |
2239 | int do_clocal = 0; | |
2240 | unsigned long flags; | |
2241 | ||
2242 | /* | |
2243 | * If non-blocking mode is set, or the port is not enabled, | |
2244 | * then make the check up front and then exit. | |
2245 | */ | |
2246 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { | |
2247 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2248 | return (0); | |
2249 | } | |
2250 | ||
2251 | if (tty->termios->c_cflag & CLOCAL) | |
2252 | do_clocal = 1; | |
2253 | ||
2254 | /* | |
2255 | * Block waiting for the carrier detect and the line to become | |
2256 | * free (i.e., not in use by the callout). While we are in | |
2257 | * this loop, info->count is dropped by one, so that | |
2258 | * mxser_close() knows when to free things. We restore it upon | |
2259 | * exit, either normal or abnormal. | |
2260 | */ | |
2261 | retval = 0; | |
2262 | add_wait_queue(&info->open_wait, &wait); | |
2263 | ||
2264 | spin_lock_irqsave(&info->slock, flags); | |
2265 | if (!tty_hung_up_p(filp)) | |
2266 | info->count--; | |
2267 | spin_unlock_irqrestore(&info->slock, flags); | |
2268 | info->blocked_open++; | |
2269 | while (1) { | |
2270 | spin_lock_irqsave(&info->slock, flags); | |
2271 | outb(inb(info->base + UART_MCR) | UART_MCR_DTR | UART_MCR_RTS, info->base + UART_MCR); | |
2272 | spin_unlock_irqrestore(&info->slock, flags); | |
2273 | set_current_state(TASK_INTERRUPTIBLE); | |
2274 | if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)) { | |
2275 | if (info->flags & ASYNC_HUP_NOTIFY) | |
2276 | retval = -EAGAIN; | |
2277 | else | |
2278 | retval = -ERESTARTSYS; | |
2279 | break; | |
2280 | } | |
2281 | if (!(info->flags & ASYNC_CLOSING) && (do_clocal || (inb(info->base + UART_MSR) & UART_MSR_DCD))) | |
2282 | break; | |
2283 | if (signal_pending(current)) { | |
2284 | retval = -ERESTARTSYS; | |
2285 | break; | |
2286 | } | |
2287 | schedule(); | |
2288 | } | |
2289 | set_current_state(TASK_RUNNING); | |
2290 | remove_wait_queue(&info->open_wait, &wait); | |
2291 | if (!tty_hung_up_p(filp)) | |
2292 | info->count++; | |
2293 | info->blocked_open--; | |
2294 | if (retval) | |
2295 | return (retval); | |
2296 | info->flags |= ASYNC_NORMAL_ACTIVE; | |
2297 | return (0); | |
2298 | } | |
2299 | ||
2300 | static int mxser_startup(struct mxser_struct *info) | |
2301 | { | |
2302 | ||
2303 | unsigned long page; | |
2304 | unsigned long flags; | |
2305 | ||
2306 | page = __get_free_page(GFP_KERNEL); | |
2307 | if (!page) | |
2308 | return (-ENOMEM); | |
2309 | ||
2310 | spin_lock_irqsave(&info->slock, flags); | |
2311 | ||
2312 | if (info->flags & ASYNC_INITIALIZED) { | |
2313 | free_page(page); | |
2314 | spin_unlock_irqrestore(&info->slock, flags); | |
2315 | return (0); | |
2316 | } | |
2317 | ||
2318 | if (!info->base || !info->type) { | |
2319 | if (info->tty) | |
2320 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2321 | free_page(page); | |
2322 | spin_unlock_irqrestore(&info->slock, flags); | |
2323 | return (0); | |
2324 | } | |
2325 | if (info->xmit_buf) | |
2326 | free_page(page); | |
2327 | else | |
2328 | info->xmit_buf = (unsigned char *) page; | |
2329 | ||
2330 | /* | |
2331 | * Clear the FIFO buffers and disable them | |
2332 | * (they will be reenabled in mxser_change_speed()) | |
2333 | */ | |
2334 | if (info->IsMoxaMustChipFlag) | |
2335 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR); | |
2336 | else | |
2337 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), info->base + UART_FCR); | |
2338 | ||
2339 | /* | |
2340 | * At this point there's no way the LSR could still be 0xFF; | |
2341 | * if it is, then bail out, because there's likely no UART | |
2342 | * here. | |
2343 | */ | |
2344 | if (inb(info->base + UART_LSR) == 0xff) { | |
2345 | spin_unlock_irqrestore(&info->slock, flags); | |
2346 | if (capable(CAP_SYS_ADMIN)) { | |
2347 | if (info->tty) | |
2348 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2349 | return (0); | |
2350 | } else | |
2351 | return (-ENODEV); | |
2352 | } | |
2353 | ||
2354 | /* | |
2355 | * Clear the interrupt registers. | |
2356 | */ | |
2357 | (void) inb(info->base + UART_LSR); | |
2358 | (void) inb(info->base + UART_RX); | |
2359 | (void) inb(info->base + UART_IIR); | |
2360 | (void) inb(info->base + UART_MSR); | |
2361 | ||
2362 | /* | |
2363 | * Now, initialize the UART | |
2364 | */ | |
2365 | outb(UART_LCR_WLEN8, info->base + UART_LCR); /* reset DLAB */ | |
2366 | info->MCR = UART_MCR_DTR | UART_MCR_RTS; | |
2367 | outb(info->MCR, info->base + UART_MCR); | |
2368 | ||
2369 | /* | |
2370 | * Finally, enable interrupts | |
2371 | */ | |
2372 | info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; | |
2373 | // info->IER = UART_IER_RLSI | UART_IER_RDI; | |
2374 | ||
2375 | // following add by Victor Yu. 08-30-2002 | |
2376 | if (info->IsMoxaMustChipFlag) | |
2377 | info->IER |= MOXA_MUST_IER_EGDAI; | |
2378 | // above add by Victor Yu. 08-30-2002 | |
2379 | outb(info->IER, info->base + UART_IER); /* enable interrupts */ | |
2380 | ||
2381 | /* | |
2382 | * And clear the interrupt registers again for luck. | |
2383 | */ | |
2384 | (void) inb(info->base + UART_LSR); | |
2385 | (void) inb(info->base + UART_RX); | |
2386 | (void) inb(info->base + UART_IIR); | |
2387 | (void) inb(info->base + UART_MSR); | |
2388 | ||
2389 | if (info->tty) | |
2390 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | |
2391 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
2392 | ||
2393 | /* | |
2394 | * and set the speed of the serial port | |
2395 | */ | |
2396 | spin_unlock_irqrestore(&info->slock, flags); | |
2397 | mxser_change_speed(info, NULL); | |
2398 | ||
2399 | info->flags |= ASYNC_INITIALIZED; | |
2400 | return (0); | |
2401 | } | |
2402 | ||
2403 | /* | |
2404 | * This routine will shutdown a serial port; interrupts maybe disabled, and | |
2405 | * DTR is dropped if the hangup on close termio flag is on. | |
2406 | */ | |
2407 | static void mxser_shutdown(struct mxser_struct *info) | |
2408 | { | |
2409 | unsigned long flags; | |
2410 | ||
2411 | if (!(info->flags & ASYNC_INITIALIZED)) | |
2412 | return; | |
2413 | ||
2414 | spin_lock_irqsave(&info->slock, flags); | |
2415 | ||
2416 | /* | |
2417 | * clear delta_msr_wait queue to avoid mem leaks: we may free the irq | |
2418 | * here so the queue might never be waken up | |
2419 | */ | |
2420 | wake_up_interruptible(&info->delta_msr_wait); | |
2421 | ||
2422 | /* | |
2423 | * Free the IRQ, if necessary | |
2424 | */ | |
2425 | if (info->xmit_buf) { | |
2426 | free_page((unsigned long) info->xmit_buf); | |
2427 | info->xmit_buf = NULL; | |
2428 | } | |
2429 | ||
2430 | info->IER = 0; | |
2431 | outb(0x00, info->base + UART_IER); | |
2432 | ||
2433 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) | |
2434 | info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS); | |
2435 | outb(info->MCR, info->base + UART_MCR); | |
2436 | ||
2437 | /* clear Rx/Tx FIFO's */ | |
2438 | // following add by Victor Yu. 08-30-2002 | |
2439 | if (info->IsMoxaMustChipFlag) | |
2440 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR); | |
2441 | else | |
2442 | // above add by Victor Yu. 08-30-2002 | |
2443 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), info->base + UART_FCR); | |
2444 | ||
2445 | /* read data port to reset things */ | |
2446 | (void) inb(info->base + UART_RX); | |
2447 | ||
2448 | if (info->tty) | |
2449 | set_bit(TTY_IO_ERROR, &info->tty->flags); | |
2450 | ||
2451 | info->flags &= ~ASYNC_INITIALIZED; | |
2452 | ||
2453 | // following add by Victor Yu. 09-23-2002 | |
2454 | if (info->IsMoxaMustChipFlag) { | |
2455 | SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->base); | |
2456 | } | |
2457 | // above add by Victor Yu. 09-23-2002 | |
2458 | ||
2459 | spin_unlock_irqrestore(&info->slock, flags); | |
2460 | } | |
2461 | ||
2462 | /* | |
2463 | * This routine is called to set the UART divisor registers to match | |
2464 | * the specified baud rate for a serial port. | |
2465 | */ | |
2466 | static int mxser_change_speed(struct mxser_struct *info, struct termios *old_termios) | |
2467 | { | |
2468 | unsigned cflag, cval, fcr; | |
2469 | int ret = 0; | |
2470 | unsigned char status; | |
2471 | long baud; | |
2472 | unsigned long flags; | |
2473 | ||
2474 | ||
2475 | if (!info->tty || !info->tty->termios) | |
2476 | return ret; | |
2477 | cflag = info->tty->termios->c_cflag; | |
2478 | if (!(info->base)) | |
2479 | return ret; | |
2480 | ||
2481 | ||
2482 | #ifndef B921600 | |
2483 | #define B921600 (B460800 +1) | |
2484 | #endif | |
2485 | if (mxser_set_baud_method[info->port] == 0) { | |
2486 | switch (cflag & (CBAUD | CBAUDEX)) { | |
2487 | case B921600: | |
2488 | baud = 921600; | |
2489 | break; | |
2490 | case B460800: | |
2491 | baud = 460800; | |
2492 | break; | |
2493 | case B230400: | |
2494 | baud = 230400; | |
2495 | break; | |
2496 | case B115200: | |
2497 | baud = 115200; | |
2498 | break; | |
2499 | case B57600: | |
2500 | baud = 57600; | |
2501 | break; | |
2502 | case B38400: | |
2503 | baud = 38400; | |
2504 | break; | |
2505 | case B19200: | |
2506 | baud = 19200; | |
2507 | break; | |
2508 | case B9600: | |
2509 | baud = 9600; | |
2510 | break; | |
2511 | case B4800: | |
2512 | baud = 4800; | |
2513 | break; | |
2514 | case B2400: | |
2515 | baud = 2400; | |
2516 | break; | |
2517 | case B1800: | |
2518 | baud = 1800; | |
2519 | break; | |
2520 | case B1200: | |
2521 | baud = 1200; | |
2522 | break; | |
2523 | case B600: | |
2524 | baud = 600; | |
2525 | break; | |
2526 | case B300: | |
2527 | baud = 300; | |
2528 | break; | |
2529 | case B200: | |
2530 | baud = 200; | |
2531 | break; | |
2532 | case B150: | |
2533 | baud = 150; | |
2534 | break; | |
2535 | case B134: | |
2536 | baud = 134; | |
2537 | break; | |
2538 | case B110: | |
2539 | baud = 110; | |
2540 | break; | |
2541 | case B75: | |
2542 | baud = 75; | |
2543 | break; | |
2544 | case B50: | |
2545 | baud = 50; | |
2546 | break; | |
2547 | default: | |
2548 | baud = 0; | |
2549 | break; | |
2550 | } | |
2551 | mxser_set_baud(info, baud); | |
2552 | } | |
2553 | ||
2554 | /* byte size and parity */ | |
2555 | switch (cflag & CSIZE) { | |
2556 | case CS5: | |
2557 | cval = 0x00; | |
2558 | break; | |
2559 | case CS6: | |
2560 | cval = 0x01; | |
2561 | break; | |
2562 | case CS7: | |
2563 | cval = 0x02; | |
2564 | break; | |
2565 | case CS8: | |
2566 | cval = 0x03; | |
2567 | break; | |
2568 | default: | |
2569 | cval = 0x00; | |
2570 | break; /* too keep GCC shut... */ | |
2571 | } | |
2572 | if (cflag & CSTOPB) | |
2573 | cval |= 0x04; | |
2574 | if (cflag & PARENB) | |
2575 | cval |= UART_LCR_PARITY; | |
2576 | if (!(cflag & PARODD)) { | |
2577 | cval |= UART_LCR_EPAR; | |
2578 | } | |
2579 | if (cflag & CMSPAR) | |
2580 | cval |= UART_LCR_SPAR; | |
2581 | ||
2582 | if ((info->type == PORT_8250) || (info->type == PORT_16450)) { | |
2583 | if (info->IsMoxaMustChipFlag) { | |
2584 | fcr = UART_FCR_ENABLE_FIFO; | |
2585 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; | |
2586 | SET_MOXA_MUST_FIFO_VALUE(info); | |
2587 | } else | |
2588 | fcr = 0; | |
2589 | } else { | |
2590 | fcr = UART_FCR_ENABLE_FIFO; | |
2591 | // following add by Victor Yu. 08-30-2002 | |
2592 | if (info->IsMoxaMustChipFlag) { | |
2593 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; | |
2594 | SET_MOXA_MUST_FIFO_VALUE(info); | |
2595 | } else { | |
2596 | // above add by Victor Yu. 08-30-2002 | |
2597 | ||
2598 | switch (info->rx_trigger) { | |
2599 | case 1: | |
2600 | fcr |= UART_FCR_TRIGGER_1; | |
2601 | break; | |
2602 | case 4: | |
2603 | fcr |= UART_FCR_TRIGGER_4; | |
2604 | break; | |
2605 | case 8: | |
2606 | fcr |= UART_FCR_TRIGGER_8; | |
2607 | break; | |
2608 | default: | |
2609 | fcr |= UART_FCR_TRIGGER_14; | |
2610 | break; | |
2611 | } | |
2612 | } | |
2613 | } | |
2614 | ||
2615 | /* CTS flow control flag and modem status interrupts */ | |
2616 | info->IER &= ~UART_IER_MSI; | |
2617 | info->MCR &= ~UART_MCR_AFE; | |
2618 | if (cflag & CRTSCTS) { | |
2619 | info->flags |= ASYNC_CTS_FLOW; | |
2620 | info->IER |= UART_IER_MSI; | |
2621 | if ((info->type == PORT_16550A) || (info->IsMoxaMustChipFlag)) { | |
2622 | info->MCR |= UART_MCR_AFE; | |
2623 | //status = mxser_get_msr(info->base, 0, info->port); | |
2624 | /* save_flags(flags); | |
2625 | cli(); | |
2626 | status = inb(baseaddr + UART_MSR); | |
2627 | restore_flags(flags);*/ | |
2628 | //mxser_check_modem_status(info, status); | |
2629 | } else { | |
2630 | //status = mxser_get_msr(info->base, 0, info->port); | |
2631 | ||
2632 | //MX_LOCK(&info->slock); | |
2633 | status = inb(info->base + UART_MSR); | |
2634 | //MX_UNLOCK(&info->slock); | |
2635 | if (info->tty->hw_stopped) { | |
2636 | if (status & UART_MSR_CTS) { | |
2637 | info->tty->hw_stopped = 0; | |
2638 | if ((info->type != PORT_16550A) && (!info->IsMoxaMustChipFlag)) { | |
2639 | info->IER |= UART_IER_THRI; | |
2640 | outb(info->IER, info->base + UART_IER); | |
2641 | } | |
2642 | set_bit(MXSER_EVENT_TXLOW, &info->event); | |
2643 | schedule_work(&info->tqueue); } | |
2644 | } else { | |
2645 | if (!(status & UART_MSR_CTS)) { | |
2646 | info->tty->hw_stopped = 1; | |
2647 | if ((info->type != PORT_16550A) && (!info->IsMoxaMustChipFlag)) { | |
2648 | info->IER &= ~UART_IER_THRI; | |
2649 | outb(info->IER, info->base + UART_IER); | |
2650 | } | |
2651 | } | |
2652 | } | |
2653 | } | |
2654 | } else { | |
2655 | info->flags &= ~ASYNC_CTS_FLOW; | |
2656 | } | |
2657 | outb(info->MCR, info->base + UART_MCR); | |
2658 | if (cflag & CLOCAL) { | |
2659 | info->flags &= ~ASYNC_CHECK_CD; | |
2660 | } else { | |
2661 | info->flags |= ASYNC_CHECK_CD; | |
2662 | info->IER |= UART_IER_MSI; | |
2663 | } | |
2664 | outb(info->IER, info->base + UART_IER); | |
2665 | ||
2666 | /* | |
2667 | * Set up parity check flag | |
2668 | */ | |
2669 | info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; | |
2670 | if (I_INPCK(info->tty)) | |
2671 | info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; | |
2672 | if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) | |
2673 | info->read_status_mask |= UART_LSR_BI; | |
2674 | ||
2675 | info->ignore_status_mask = 0; | |
2676 | ||
2677 | if (I_IGNBRK(info->tty)) { | |
2678 | info->ignore_status_mask |= UART_LSR_BI; | |
2679 | info->read_status_mask |= UART_LSR_BI; | |
2680 | /* | |
2681 | * If we're ignore parity and break indicators, ignore | |
2682 | * overruns too. (For real raw support). | |
2683 | */ | |
2684 | if (I_IGNPAR(info->tty)) { | |
2685 | info->ignore_status_mask |= UART_LSR_OE | UART_LSR_PE | UART_LSR_FE; | |
2686 | info->read_status_mask |= UART_LSR_OE | UART_LSR_PE | UART_LSR_FE; | |
2687 | } | |
2688 | } | |
2689 | // following add by Victor Yu. 09-02-2002 | |
2690 | if (info->IsMoxaMustChipFlag) { | |
2691 | spin_lock_irqsave(&info->slock, flags); | |
2692 | SET_MOXA_MUST_XON1_VALUE(info->base, START_CHAR(info->tty)); | |
2693 | SET_MOXA_MUST_XOFF1_VALUE(info->base, STOP_CHAR(info->tty)); | |
2694 | if (I_IXON(info->tty)) { | |
2695 | ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | |
2696 | } else { | |
2697 | DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | |
2698 | } | |
2699 | if (I_IXOFF(info->tty)) { | |
2700 | ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base); | |
2701 | } else { | |
2702 | DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base); | |
2703 | } | |
2704 | /* | |
2705 | if ( I_IXANY(info->tty) ) { | |
2706 | info->MCR |= MOXA_MUST_MCR_XON_ANY; | |
2707 | ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base); | |
2708 | } else { | |
2709 | info->MCR &= ~MOXA_MUST_MCR_XON_ANY; | |
2710 | DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base); | |
2711 | } | |
2712 | */ | |
2713 | spin_unlock_irqrestore(&info->slock, flags); | |
2714 | } | |
2715 | // above add by Victor Yu. 09-02-2002 | |
2716 | ||
2717 | ||
2718 | outb(fcr, info->base + UART_FCR); /* set fcr */ | |
2719 | outb(cval, info->base + UART_LCR); | |
2720 | ||
2721 | return ret; | |
2722 | } | |
2723 | ||
2724 | ||
2725 | static int mxser_set_baud(struct mxser_struct *info, long newspd) | |
2726 | { | |
2727 | int quot = 0; | |
2728 | unsigned char cval; | |
2729 | int ret = 0; | |
2730 | unsigned long flags; | |
2731 | ||
2732 | if (!info->tty || !info->tty->termios) | |
2733 | return ret; | |
2734 | ||
2735 | if (!(info->base)) | |
2736 | return ret; | |
2737 | ||
2738 | if (newspd > info->MaxCanSetBaudRate) | |
2739 | return 0; | |
2740 | ||
2741 | info->realbaud = newspd; | |
2742 | if (newspd == 134) { | |
2743 | quot = (2 * info->baud_base / 269); | |
2744 | } else if (newspd) { | |
2745 | quot = info->baud_base / newspd; | |
2746 | ||
2747 | if (quot == 0) | |
2748 | quot = 1; | |
2749 | ||
2750 | } else { | |
2751 | quot = 0; | |
2752 | } | |
2753 | ||
2754 | info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base); | |
2755 | info->timeout += HZ / 50; /* Add .02 seconds of slop */ | |
2756 | ||
2757 | if (quot) { | |
2758 | spin_lock_irqsave(&info->slock, flags); | |
2759 | info->MCR |= UART_MCR_DTR; | |
2760 | outb(info->MCR, info->base + UART_MCR); | |
2761 | spin_unlock_irqrestore(&info->slock, flags); | |
2762 | } else { | |
2763 | spin_lock_irqsave(&info->slock, flags); | |
2764 | info->MCR &= ~UART_MCR_DTR; | |
2765 | outb(info->MCR, info->base + UART_MCR); | |
2766 | spin_unlock_irqrestore(&info->slock, flags); | |
2767 | return ret; | |
2768 | } | |
2769 | ||
2770 | cval = inb(info->base + UART_LCR); | |
2771 | ||
2772 | outb(cval | UART_LCR_DLAB, info->base + UART_LCR); /* set DLAB */ | |
2773 | ||
2774 | outb(quot & 0xff, info->base + UART_DLL); /* LS of divisor */ | |
2775 | outb(quot >> 8, info->base + UART_DLM); /* MS of divisor */ | |
2776 | outb(cval, info->base + UART_LCR); /* reset DLAB */ | |
2777 | ||
2778 | ||
2779 | return ret; | |
2780 | } | |
2781 | ||
2782 | ||
2783 | ||
2784 | /* | |
2785 | * ------------------------------------------------------------ | |
2786 | * friends of mxser_ioctl() | |
2787 | * ------------------------------------------------------------ | |
2788 | */ | |
2789 | static int mxser_get_serial_info(struct mxser_struct *info, struct serial_struct __user *retinfo) | |
2790 | { | |
2791 | struct serial_struct tmp; | |
2792 | ||
2793 | if (!retinfo) | |
2794 | return (-EFAULT); | |
2795 | memset(&tmp, 0, sizeof(tmp)); | |
2796 | tmp.type = info->type; | |
2797 | tmp.line = info->port; | |
2798 | tmp.port = info->base; | |
2799 | tmp.irq = info->irq; | |
2800 | tmp.flags = info->flags; | |
2801 | tmp.baud_base = info->baud_base; | |
2802 | tmp.close_delay = info->close_delay; | |
2803 | tmp.closing_wait = info->closing_wait; | |
2804 | tmp.custom_divisor = info->custom_divisor; | |
2805 | tmp.hub6 = 0; | |
2806 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2807 | return -EFAULT; | |
2808 | return (0); | |
2809 | } | |
2810 | ||
2811 | static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct __user *new_info) | |
2812 | { | |
2813 | struct serial_struct new_serial; | |
2814 | unsigned int flags; | |
2815 | int retval = 0; | |
2816 | ||
2817 | if (!new_info || !info->base) | |
2818 | return (-EFAULT); | |
2819 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2820 | return -EFAULT; | |
2821 | ||
2822 | if ((new_serial.irq != info->irq) || (new_serial.port != info->base) || (new_serial.custom_divisor != info->custom_divisor) || (new_serial.baud_base != info->baud_base)) | |
2823 | return (-EPERM); | |
2824 | ||
2825 | flags = info->flags & ASYNC_SPD_MASK; | |
2826 | ||
2827 | if (!capable(CAP_SYS_ADMIN)) { | |
2828 | if ((new_serial.baud_base != info->baud_base) || (new_serial.close_delay != info->close_delay) || ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK))) | |
2829 | return (-EPERM); | |
2830 | info->flags = ((info->flags & ~ASYNC_USR_MASK) | (new_serial.flags & ASYNC_USR_MASK)); | |
2831 | } else { | |
2832 | /* | |
2833 | * OK, past this point, all the error checking has been done. | |
2834 | * At this point, we start making changes..... | |
2835 | */ | |
2836 | info->flags = ((info->flags & ~ASYNC_FLAGS) | (new_serial.flags & ASYNC_FLAGS)); | |
2837 | info->close_delay = new_serial.close_delay * HZ / 100; | |
2838 | info->closing_wait = new_serial.closing_wait * HZ / 100; | |
2839 | info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
2840 | info->tty->low_latency = 0; //(info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
2841 | } | |
2842 | ||
2843 | /* added by casper, 3/17/2000, for mouse */ | |
2844 | info->type = new_serial.type; | |
2845 | ||
2846 | process_txrx_fifo(info); | |
2847 | ||
2848 | /* */ | |
2849 | if (info->flags & ASYNC_INITIALIZED) { | |
2850 | if (flags != (info->flags & ASYNC_SPD_MASK)) { | |
2851 | mxser_change_speed(info, NULL); | |
2852 | } | |
2853 | } else { | |
2854 | retval = mxser_startup(info); | |
2855 | } | |
2856 | return (retval); | |
2857 | } | |
2858 | ||
2859 | /* | |
2860 | * mxser_get_lsr_info - get line status register info | |
2861 | * | |
2862 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2863 | * is emptied. On bus types like RS485, the transmitter must | |
2864 | * release the bus after transmitting. This must be done when | |
2865 | * the transmit shift register is empty, not be done when the | |
2866 | * transmit holding register is empty. This functionality | |
2867 | * allows an RS485 driver to be written in user space. | |
2868 | */ | |
2869 | static int mxser_get_lsr_info(struct mxser_struct *info, unsigned int __user *value) | |
2870 | { | |
2871 | unsigned char status; | |
2872 | unsigned int result; | |
2873 | unsigned long flags; | |
2874 | ||
2875 | spin_lock_irqsave(&info->slock, flags); | |
2876 | status = inb(info->base + UART_LSR); | |
2877 | spin_unlock_irqrestore(&info->slock, flags); | |
2878 | result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); | |
2879 | return put_user(result, value); | |
2880 | } | |
2881 | ||
2882 | /* | |
2883 | * This routine sends a break character out the serial port. | |
2884 | */ | |
2885 | static void mxser_send_break(struct mxser_struct *info, int duration) | |
2886 | { | |
2887 | unsigned long flags; | |
2888 | ||
2889 | if (!info->base) | |
2890 | return; | |
2891 | set_current_state(TASK_INTERRUPTIBLE); | |
2892 | spin_lock_irqsave(&info->slock, flags); | |
2893 | outb(inb(info->base + UART_LCR) | UART_LCR_SBC, info->base + UART_LCR); | |
2894 | spin_unlock_irqrestore(&info->slock, flags); | |
2895 | schedule_timeout(duration); | |
2896 | spin_lock_irqsave(&info->slock, flags); | |
2897 | outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC, info->base + UART_LCR); | |
2898 | spin_unlock_irqrestore(&info->slock, flags); | |
2899 | } | |
2900 | ||
2901 | static int mxser_tiocmget(struct tty_struct *tty, struct file *file) | |
2902 | { | |
2903 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
2904 | unsigned char control, status; | |
2905 | unsigned long flags; | |
2906 | ||
2907 | ||
2908 | if (tty->index == MXSER_PORTS) | |
2909 | return (-ENOIOCTLCMD); | |
2910 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
2911 | return (-EIO); | |
2912 | ||
2913 | control = info->MCR; | |
2914 | ||
2915 | spin_lock_irqsave(&info->slock, flags); | |
2916 | status = inb(info->base + UART_MSR); | |
2917 | if (status & UART_MSR_ANY_DELTA) | |
2918 | mxser_check_modem_status(info, status); | |
2919 | spin_unlock_irqrestore(&info->slock, flags); | |
2920 | return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) | | |
2921 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); | |
2922 | } | |
2923 | ||
2924 | static int mxser_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) | |
2925 | { | |
2926 | struct mxser_struct *info = (struct mxser_struct *) tty->driver_data; | |
2927 | unsigned long flags; | |
2928 | ||
2929 | ||
2930 | if (tty->index == MXSER_PORTS) | |
2931 | return -ENOIOCTLCMD; | |
2932 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
2933 | return -EIO; | |
2934 | ||
2935 | spin_lock_irqsave(&info->slock, flags); | |
2936 | ||
2937 | if (set & TIOCM_RTS) | |
2938 | info->MCR |= UART_MCR_RTS; | |
2939 | if (set & TIOCM_DTR) | |
2940 | info->MCR |= UART_MCR_DTR; | |
2941 | ||
2942 | if (clear & TIOCM_RTS) | |
2943 | info->MCR &= ~UART_MCR_RTS; | |
2944 | if (clear & TIOCM_DTR) | |
2945 | info->MCR &= ~UART_MCR_DTR; | |
2946 | ||
2947 | outb(info->MCR, info->base + UART_MCR); | |
2948 | spin_unlock_irqrestore(&info->slock, flags); | |
2949 | return 0; | |
2950 | } | |
2951 | ||
2952 | ||
2953 | static int mxser_read_register(int, unsigned short *); | |
2954 | static int mxser_program_mode(int); | |
2955 | static void mxser_normal_mode(int); | |
2956 | ||
2957 | static int mxser_get_ISA_conf(int cap, struct mxser_hwconf *hwconf) | |
2958 | { | |
2959 | int id, i, bits; | |
2960 | unsigned short regs[16], irq; | |
2961 | unsigned char scratch, scratch2; | |
2962 | ||
2963 | hwconf->IsMoxaMustChipFlag = MOXA_OTHER_UART; | |
2964 | ||
2965 | id = mxser_read_register(cap, regs); | |
2966 | if (id == C168_ASIC_ID) { | |
2967 | hwconf->board_type = MXSER_BOARD_C168_ISA; | |
2968 | hwconf->ports = 8; | |
2969 | } else if (id == C104_ASIC_ID) { | |
2970 | hwconf->board_type = MXSER_BOARD_C104_ISA; | |
2971 | hwconf->ports = 4; | |
2972 | } else if (id == C102_ASIC_ID) { | |
2973 | hwconf->board_type = MXSER_BOARD_C102_ISA; | |
2974 | hwconf->ports = 2; | |
2975 | } else if (id == CI132_ASIC_ID) { | |
2976 | hwconf->board_type = MXSER_BOARD_CI132; | |
2977 | hwconf->ports = 2; | |
2978 | } else if (id == CI134_ASIC_ID) { | |
2979 | hwconf->board_type = MXSER_BOARD_CI134; | |
2980 | hwconf->ports = 4; | |
2981 | } else if (id == CI104J_ASIC_ID) { | |
2982 | hwconf->board_type = MXSER_BOARD_CI104J; | |
2983 | hwconf->ports = 4; | |
2984 | } else | |
2985 | return (0); | |
2986 | ||
2987 | irq = 0; | |
2988 | if (hwconf->ports == 2) { | |
2989 | irq = regs[9] & 0xF000; | |
2990 | irq = irq | (irq >> 4); | |
2991 | if (irq != (regs[9] & 0xFF00)) | |
2992 | return (MXSER_ERR_IRQ_CONFLIT); | |
2993 | } else if (hwconf->ports == 4) { | |
2994 | irq = regs[9] & 0xF000; | |
2995 | irq = irq | (irq >> 4); | |
2996 | irq = irq | (irq >> 8); | |
2997 | if (irq != regs[9]) | |
2998 | return (MXSER_ERR_IRQ_CONFLIT); | |
2999 | } else if (hwconf->ports == 8) { | |
3000 | irq = regs[9] & 0xF000; | |
3001 | irq = irq | (irq >> 4); | |
3002 | irq = irq | (irq >> 8); | |
3003 | if ((irq != regs[9]) || (irq != regs[10])) | |
3004 | return (MXSER_ERR_IRQ_CONFLIT); | |
3005 | } | |
3006 | ||
3007 | if (!irq) { | |
3008 | return (MXSER_ERR_IRQ); | |
3009 | } | |
3010 | hwconf->irq = ((int) (irq & 0xF000) >> 12); | |
3011 | for (i = 0; i < 8; i++) | |
3012 | hwconf->ioaddr[i] = (int) regs[i + 1] & 0xFFF8; | |
3013 | if ((regs[12] & 0x80) == 0) { | |
3014 | return (MXSER_ERR_VECTOR); | |
3015 | } | |
3016 | hwconf->vector = (int) regs[11]; /* interrupt vector */ | |
3017 | if (id == 1) | |
3018 | hwconf->vector_mask = 0x00FF; | |
3019 | else | |
3020 | hwconf->vector_mask = 0x000F; | |
3021 | for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { | |
3022 | if (regs[12] & bits) { | |
3023 | hwconf->baud_base[i] = 921600; | |
3024 | hwconf->MaxCanSetBaudRate[i] = 921600; // add by Victor Yu. 09-04-2002 | |
3025 | } else { | |
3026 | hwconf->baud_base[i] = 115200; | |
3027 | hwconf->MaxCanSetBaudRate[i] = 115200; // add by Victor Yu. 09-04-2002 | |
3028 | } | |
3029 | } | |
3030 | scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); | |
3031 | outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR); | |
3032 | outb(0, cap + UART_EFR); /* EFR is the same as FCR */ | |
3033 | outb(scratch2, cap + UART_LCR); | |
3034 | outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR); | |
3035 | scratch = inb(cap + UART_IIR); | |
3036 | ||
3037 | if (scratch & 0xC0) | |
3038 | hwconf->uart_type = PORT_16550A; | |
3039 | else | |
3040 | hwconf->uart_type = PORT_16450; | |
3041 | if (id == 1) | |
3042 | hwconf->ports = 8; | |
3043 | else | |
3044 | hwconf->ports = 4; | |
3045 | request_region(hwconf->ioaddr[0], 8 * hwconf->ports, "mxser(IO)"); | |
3046 | request_region(hwconf->vector, 1, "mxser(vector)"); | |
3047 | return (hwconf->ports); | |
3048 | } | |
3049 | ||
3050 | #define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ | |
3051 | #define CHIP_DO 0x02 /* Serial Data Output in Eprom */ | |
3052 | #define CHIP_CS 0x04 /* Serial Chip Select in Eprom */ | |
3053 | #define CHIP_DI 0x08 /* Serial Data Input in Eprom */ | |
3054 | #define EN_CCMD 0x000 /* Chip's command register */ | |
3055 | #define EN0_RSARLO 0x008 /* Remote start address reg 0 */ | |
3056 | #define EN0_RSARHI 0x009 /* Remote start address reg 1 */ | |
3057 | #define EN0_RCNTLO 0x00A /* Remote byte count reg WR */ | |
3058 | #define EN0_RCNTHI 0x00B /* Remote byte count reg WR */ | |
3059 | #define EN0_DCFG 0x00E /* Data configuration reg WR */ | |
3060 | #define EN0_PORT 0x010 /* Rcv missed frame error counter RD */ | |
3061 | #define ENC_PAGE0 0x000 /* Select page 0 of chip registers */ | |
3062 | #define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */ | |
3063 | static int mxser_read_register(int port, unsigned short *regs) | |
3064 | { | |
3065 | int i, k, value, id; | |
3066 | unsigned int j; | |
3067 | ||
3068 | id = mxser_program_mode(port); | |
3069 | if (id < 0) | |
3070 | return (id); | |
3071 | for (i = 0; i < 14; i++) { | |
3072 | k = (i & 0x3F) | 0x180; | |
3073 | for (j = 0x100; j > 0; j >>= 1) { | |
3074 | outb(CHIP_CS, port); | |
3075 | if (k & j) { | |
3076 | outb(CHIP_CS | CHIP_DO, port); | |
3077 | outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ | |
3078 | } else { | |
3079 | outb(CHIP_CS, port); | |
3080 | outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ | |
3081 | } | |
3082 | } | |
3083 | (void) inb(port); | |
3084 | value = 0; | |
3085 | for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { | |
3086 | outb(CHIP_CS, port); | |
3087 | outb(CHIP_CS | CHIP_SK, port); | |
3088 | if (inb(port) & CHIP_DI) | |
3089 | value |= j; | |
3090 | } | |
3091 | regs[i] = value; | |
3092 | outb(0, port); | |
3093 | } | |
3094 | mxser_normal_mode(port); | |
3095 | return (id); | |
3096 | } | |
3097 | ||
3098 | static int mxser_program_mode(int port) | |
3099 | { | |
3100 | int id, i, j, n; | |
3101 | //unsigned long flags; | |
3102 | ||
3103 | spin_lock(&gm_lock); | |
3104 | outb(0, port); | |
3105 | outb(0, port); | |
3106 | outb(0, port); | |
3107 | (void) inb(port); | |
3108 | (void) inb(port); | |
3109 | outb(0, port); | |
3110 | (void) inb(port); | |
3111 | //restore_flags(flags); | |
3112 | spin_unlock(&gm_lock); | |
3113 | ||
3114 | id = inb(port + 1) & 0x1F; | |
3115 | if ((id != C168_ASIC_ID) && (id != C104_ASIC_ID) && (id != C102_ASIC_ID) && (id != CI132_ASIC_ID) && (id != CI134_ASIC_ID) && (id != CI104J_ASIC_ID)) | |
3116 | return (-1); | |
3117 | for (i = 0, j = 0; i < 4; i++) { | |
3118 | n = inb(port + 2); | |
3119 | if (n == 'M') { | |
3120 | j = 1; | |
3121 | } else if ((j == 1) && (n == 1)) { | |
3122 | j = 2; | |
3123 | break; | |
3124 | } else | |
3125 | j = 0; | |
3126 | } | |
3127 | if (j != 2) | |
3128 | id = -2; | |
3129 | return (id); | |
3130 | } | |
3131 | ||
3132 | static void mxser_normal_mode(int port) | |
3133 | { | |
3134 | int i, n; | |
3135 | ||
3136 | outb(0xA5, port + 1); | |
3137 | outb(0x80, port + 3); | |
3138 | outb(12, port + 0); /* 9600 bps */ | |
3139 | outb(0, port + 1); | |
3140 | outb(0x03, port + 3); /* 8 data bits */ | |
3141 | outb(0x13, port + 4); /* loop back mode */ | |
3142 | for (i = 0; i < 16; i++) { | |
3143 | n = inb(port + 5); | |
3144 | if ((n & 0x61) == 0x60) | |
3145 | break; | |
3146 | if ((n & 1) == 1) | |
3147 | (void) inb(port); | |
3148 | } | |
3149 | outb(0x00, port + 4); | |
3150 | } | |
3151 | ||
3152 | module_init(mxser_module_init); | |
3153 | module_exit(mxser_module_exit); |