diff options
author | Jiri Slaby <jirislaby@gmail.com> | 2006-12-08 05:38:11 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 11:28:53 -0500 |
commit | 037ad48bdb5bb009cbc49b1ad49ed78877df2d57 (patch) | |
tree | 4b5571d618a64ad1b20d7abc12ce31a4d64a5b8e /drivers/char/mxser_new.c | |
parent | 1187ece3db310cb1e7cd75083dc7253dbac39675 (diff) |
[PATCH] mxser: make an experimental clone
Clone a new driver for moxa smartio devices by copying mxser.c to mxser_new.c
and mxser.h to mxser_new.h. No other changes are made.
This is for purposes of updating the driver to the latest vendor version.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/mxser_new.c')
-rw-r--r-- | drivers/char/mxser_new.c | 3183 |
1 files changed, 3183 insertions, 0 deletions
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c new file mode 100644 index 000000000000..a3aff0bd8e23 --- /dev/null +++ b/drivers/char/mxser_new.c | |||
@@ -0,0 +1,3183 @@ | |||
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/module.h> | ||
40 | #include <linux/autoconf.h> | ||
41 | #include <linux/errno.h> | ||
42 | #include <linux/signal.h> | ||
43 | #include <linux/sched.h> | ||
44 | #include <linux/timer.h> | ||
45 | #include <linux/interrupt.h> | ||
46 | #include <linux/tty.h> | ||
47 | #include <linux/tty_flip.h> | ||
48 | #include <linux/serial.h> | ||
49 | #include <linux/serial_reg.h> | ||
50 | #include <linux/major.h> | ||
51 | #include <linux/string.h> | ||
52 | #include <linux/fcntl.h> | ||
53 | #include <linux/ptrace.h> | ||
54 | #include <linux/gfp.h> | ||
55 | #include <linux/ioport.h> | ||
56 | #include <linux/mm.h> | ||
57 | #include <linux/smp_lock.h> | ||
58 | #include <linux/delay.h> | ||
59 | #include <linux/pci.h> | ||
60 | |||
61 | #include <asm/system.h> | ||
62 | #include <asm/io.h> | ||
63 | #include <asm/irq.h> | ||
64 | #include <asm/bitops.h> | ||
65 | #include <asm/uaccess.h> | ||
66 | |||
67 | #include "mxser.h" | ||
68 | |||
69 | #define MXSER_VERSION "1.8" | ||
70 | #define MXSERMAJOR 174 | ||
71 | #define MXSERCUMAJOR 175 | ||
72 | |||
73 | #define MXSER_EVENT_TXLOW 1 | ||
74 | #define MXSER_EVENT_HANGUP 2 | ||
75 | |||
76 | #define MXSER_BOARDS 4 /* Max. boards */ | ||
77 | #define MXSER_PORTS 32 /* Max. ports */ | ||
78 | #define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */ | ||
79 | #define MXSER_ISR_PASS_LIMIT 256 | ||
80 | |||
81 | #define MXSER_ERR_IOADDR -1 | ||
82 | #define MXSER_ERR_IRQ -2 | ||
83 | #define MXSER_ERR_IRQ_CONFLIT -3 | ||
84 | #define MXSER_ERR_VECTOR -4 | ||
85 | |||
86 | #define SERIAL_TYPE_NORMAL 1 | ||
87 | #define SERIAL_TYPE_CALLOUT 2 | ||
88 | |||
89 | #define WAKEUP_CHARS 256 | ||
90 | |||
91 | #define UART_MCR_AFE 0x20 | ||
92 | #define UART_LSR_SPECIAL 0x1E | ||
93 | |||
94 | #define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|\ | ||
95 | IXON|IXOFF)) | ||
96 | |||
97 | #define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : IRQF_DISABLED) | ||
98 | |||
99 | #define C168_ASIC_ID 1 | ||
100 | #define C104_ASIC_ID 2 | ||
101 | #define C102_ASIC_ID 0xB | ||
102 | #define CI132_ASIC_ID 4 | ||
103 | #define CI134_ASIC_ID 3 | ||
104 | #define CI104J_ASIC_ID 5 | ||
105 | |||
106 | enum { | ||
107 | MXSER_BOARD_C168_ISA = 1, | ||
108 | MXSER_BOARD_C104_ISA, | ||
109 | MXSER_BOARD_CI104J, | ||
110 | MXSER_BOARD_C168_PCI, | ||
111 | MXSER_BOARD_C104_PCI, | ||
112 | MXSER_BOARD_C102_ISA, | ||
113 | MXSER_BOARD_CI132, | ||
114 | MXSER_BOARD_CI134, | ||
115 | MXSER_BOARD_CP132, | ||
116 | MXSER_BOARD_CP114, | ||
117 | MXSER_BOARD_CT114, | ||
118 | MXSER_BOARD_CP102, | ||
119 | MXSER_BOARD_CP104U, | ||
120 | MXSER_BOARD_CP168U, | ||
121 | MXSER_BOARD_CP132U, | ||
122 | MXSER_BOARD_CP134U, | ||
123 | MXSER_BOARD_CP104JU, | ||
124 | MXSER_BOARD_RC7000, | ||
125 | MXSER_BOARD_CP118U, | ||
126 | MXSER_BOARD_CP102UL, | ||
127 | MXSER_BOARD_CP102U, | ||
128 | }; | ||
129 | |||
130 | static char *mxser_brdname[] = { | ||
131 | "C168 series", | ||
132 | "C104 series", | ||
133 | "CI-104J series", | ||
134 | "C168H/PCI series", | ||
135 | "C104H/PCI series", | ||
136 | "C102 series", | ||
137 | "CI-132 series", | ||
138 | "CI-134 series", | ||
139 | "CP-132 series", | ||
140 | "CP-114 series", | ||
141 | "CT-114 series", | ||
142 | "CP-102 series", | ||
143 | "CP-104U series", | ||
144 | "CP-168U series", | ||
145 | "CP-132U series", | ||
146 | "CP-134U series", | ||
147 | "CP-104JU series", | ||
148 | "Moxa UC7000 Serial", | ||
149 | "CP-118U series", | ||
150 | "CP-102UL series", | ||
151 | "CP-102U series", | ||
152 | }; | ||
153 | |||
154 | static int mxser_numports[] = { | ||
155 | 8, /* C168-ISA */ | ||
156 | 4, /* C104-ISA */ | ||
157 | 4, /* CI104J */ | ||
158 | 8, /* C168-PCI */ | ||
159 | 4, /* C104-PCI */ | ||
160 | 2, /* C102-ISA */ | ||
161 | 2, /* CI132 */ | ||
162 | 4, /* CI134 */ | ||
163 | 2, /* CP132 */ | ||
164 | 4, /* CP114 */ | ||
165 | 4, /* CT114 */ | ||
166 | 2, /* CP102 */ | ||
167 | 4, /* CP104U */ | ||
168 | 8, /* CP168U */ | ||
169 | 2, /* CP132U */ | ||
170 | 4, /* CP134U */ | ||
171 | 4, /* CP104JU */ | ||
172 | 8, /* RC7000 */ | ||
173 | 8, /* CP118U */ | ||
174 | 2, /* CP102UL */ | ||
175 | 2, /* CP102U */ | ||
176 | }; | ||
177 | |||
178 | #define UART_TYPE_NUM 2 | ||
179 | |||
180 | static const unsigned int Gmoxa_uart_id[UART_TYPE_NUM] = { | ||
181 | MOXA_MUST_MU150_HWID, | ||
182 | MOXA_MUST_MU860_HWID | ||
183 | }; | ||
184 | |||
185 | /* This is only for PCI */ | ||
186 | #define UART_INFO_NUM 3 | ||
187 | struct mxpciuart_info { | ||
188 | int type; | ||
189 | int tx_fifo; | ||
190 | int rx_fifo; | ||
191 | int xmit_fifo_size; | ||
192 | int rx_high_water; | ||
193 | int rx_trigger; | ||
194 | int rx_low_water; | ||
195 | long max_baud; | ||
196 | }; | ||
197 | |||
198 | static const struct mxpciuart_info Gpci_uart_info[UART_INFO_NUM] = { | ||
199 | {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L}, | ||
200 | {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L}, | ||
201 | {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} | ||
202 | }; | ||
203 | |||
204 | |||
205 | #ifdef CONFIG_PCI | ||
206 | |||
207 | static struct pci_device_id mxser_pcibrds[] = { | ||
208 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C168, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C168_PCI}, | ||
209 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_C104_PCI}, | ||
210 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132}, | ||
211 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP114}, | ||
212 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CT114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CT114}, | ||
213 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102}, | ||
214 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104U}, | ||
215 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP168U}, | ||
216 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP132U}, | ||
217 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP134U}, | ||
218 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104JU, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP104JU}, | ||
219 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_RC7000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_RC7000}, | ||
220 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP118U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP118U}, | ||
221 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102UL, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102UL}, | ||
222 | {PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102U, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MXSER_BOARD_CP102U}, | ||
223 | {0} | ||
224 | }; | ||
225 | |||
226 | MODULE_DEVICE_TABLE(pci, mxser_pcibrds); | ||
227 | |||
228 | |||
229 | #endif | ||
230 | |||
231 | typedef struct _moxa_pci_info { | ||
232 | unsigned short busNum; | ||
233 | unsigned short devNum; | ||
234 | struct pci_dev *pdev; /* add by Victor Yu. 06-23-2003 */ | ||
235 | } moxa_pci_info; | ||
236 | |||
237 | static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 }; | ||
238 | static int ttymajor = MXSERMAJOR; | ||
239 | static int calloutmajor = MXSERCUMAJOR; | ||
240 | static int verbose = 0; | ||
241 | |||
242 | /* Variables for insmod */ | ||
243 | |||
244 | MODULE_AUTHOR("Casper Yang"); | ||
245 | MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); | ||
246 | module_param_array(ioaddr, int, NULL, 0); | ||
247 | module_param(ttymajor, int, 0); | ||
248 | module_param(calloutmajor, int, 0); | ||
249 | module_param(verbose, bool, 0); | ||
250 | MODULE_LICENSE("GPL"); | ||
251 | |||
252 | struct mxser_log { | ||
253 | int tick; | ||
254 | unsigned long rxcnt[MXSER_PORTS]; | ||
255 | unsigned long txcnt[MXSER_PORTS]; | ||
256 | }; | ||
257 | |||
258 | |||
259 | struct mxser_mon { | ||
260 | unsigned long rxcnt; | ||
261 | unsigned long txcnt; | ||
262 | unsigned long up_rxcnt; | ||
263 | unsigned long up_txcnt; | ||
264 | int modem_status; | ||
265 | unsigned char hold_reason; | ||
266 | }; | ||
267 | |||
268 | struct mxser_mon_ext { | ||
269 | unsigned long rx_cnt[32]; | ||
270 | unsigned long tx_cnt[32]; | ||
271 | unsigned long up_rxcnt[32]; | ||
272 | unsigned long up_txcnt[32]; | ||
273 | int modem_status[32]; | ||
274 | |||
275 | long baudrate[32]; | ||
276 | int databits[32]; | ||
277 | int stopbits[32]; | ||
278 | int parity[32]; | ||
279 | int flowctrl[32]; | ||
280 | int fifo[32]; | ||
281 | int iftype[32]; | ||
282 | }; | ||
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 | struct mxser_mstatus { | ||
350 | tcflag_t cflag; | ||
351 | int cts; | ||
352 | int dsr; | ||
353 | int ri; | ||
354 | int dcd; | ||
355 | }; | ||
356 | |||
357 | static struct mxser_mstatus GMStatus[MXSER_PORTS]; | ||
358 | |||
359 | static int mxserBoardCAP[MXSER_BOARDS] = { | ||
360 | 0, 0, 0, 0 | ||
361 | /* 0x180, 0x280, 0x200, 0x320 */ | ||
362 | }; | ||
363 | |||
364 | static struct tty_driver *mxvar_sdriver; | ||
365 | static struct mxser_struct mxvar_table[MXSER_PORTS]; | ||
366 | static struct tty_struct *mxvar_tty[MXSER_PORTS + 1]; | ||
367 | static struct termios *mxvar_termios[MXSER_PORTS + 1]; | ||
368 | static struct termios *mxvar_termios_locked[MXSER_PORTS + 1]; | ||
369 | static struct mxser_log mxvar_log; | ||
370 | static int mxvar_diagflag; | ||
371 | static unsigned char mxser_msr[MXSER_PORTS + 1]; | ||
372 | static struct mxser_mon_ext mon_data_ext; | ||
373 | static int mxser_set_baud_method[MXSER_PORTS + 1]; | ||
374 | static spinlock_t gm_lock; | ||
375 | |||
376 | /* | ||
377 | * This is used to figure out the divisor speeds and the timeouts | ||
378 | */ | ||
379 | |||
380 | static struct mxser_hwconf mxsercfg[MXSER_BOARDS]; | ||
381 | |||
382 | /* | ||
383 | * static functions: | ||
384 | */ | ||
385 | |||
386 | static void mxser_getcfg(int board, struct mxser_hwconf *hwconf); | ||
387 | static int mxser_init(void); | ||
388 | |||
389 | /* static void mxser_poll(unsigned long); */ | ||
390 | static int mxser_get_ISA_conf(int, struct mxser_hwconf *); | ||
391 | static int mxser_get_PCI_conf(int, int, int, struct mxser_hwconf *); | ||
392 | static void mxser_do_softint(void *); | ||
393 | static int mxser_open(struct tty_struct *, struct file *); | ||
394 | static void mxser_close(struct tty_struct *, struct file *); | ||
395 | static int mxser_write(struct tty_struct *, const unsigned char *, int); | ||
396 | static int mxser_write_room(struct tty_struct *); | ||
397 | static void mxser_flush_buffer(struct tty_struct *); | ||
398 | static int mxser_chars_in_buffer(struct tty_struct *); | ||
399 | static void mxser_flush_chars(struct tty_struct *); | ||
400 | static void mxser_put_char(struct tty_struct *, unsigned char); | ||
401 | static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong); | ||
402 | static int mxser_ioctl_special(unsigned int, void __user *); | ||
403 | static void mxser_throttle(struct tty_struct *); | ||
404 | static void mxser_unthrottle(struct tty_struct *); | ||
405 | static void mxser_set_termios(struct tty_struct *, struct termios *); | ||
406 | static void mxser_stop(struct tty_struct *); | ||
407 | static void mxser_start(struct tty_struct *); | ||
408 | static void mxser_hangup(struct tty_struct *); | ||
409 | static void mxser_rs_break(struct tty_struct *, int); | ||
410 | static irqreturn_t mxser_interrupt(int, void *, struct pt_regs *); | ||
411 | static void mxser_receive_chars(struct mxser_struct *, int *); | ||
412 | static void mxser_transmit_chars(struct mxser_struct *); | ||
413 | static void mxser_check_modem_status(struct mxser_struct *, int); | ||
414 | static int mxser_block_til_ready(struct tty_struct *, struct file *, struct mxser_struct *); | ||
415 | static int mxser_startup(struct mxser_struct *); | ||
416 | static void mxser_shutdown(struct mxser_struct *); | ||
417 | static int mxser_change_speed(struct mxser_struct *, struct termios *old_termios); | ||
418 | static int mxser_get_serial_info(struct mxser_struct *, struct serial_struct __user *); | ||
419 | static int mxser_set_serial_info(struct mxser_struct *, struct serial_struct __user *); | ||
420 | static int mxser_get_lsr_info(struct mxser_struct *, unsigned int __user *); | ||
421 | static void mxser_send_break(struct mxser_struct *, int); | ||
422 | static int mxser_tiocmget(struct tty_struct *, struct file *); | ||
423 | static int mxser_tiocmset(struct tty_struct *, struct file *, unsigned int, unsigned int); | ||
424 | static int mxser_set_baud(struct mxser_struct *info, long newspd); | ||
425 | static void mxser_wait_until_sent(struct tty_struct *tty, int timeout); | ||
426 | |||
427 | static void mxser_startrx(struct tty_struct *tty); | ||
428 | static void mxser_stoprx(struct tty_struct *tty); | ||
429 | |||
430 | |||
431 | static int CheckIsMoxaMust(int io) | ||
432 | { | ||
433 | u8 oldmcr, hwid; | ||
434 | int i; | ||
435 | |||
436 | outb(0, io + UART_LCR); | ||
437 | DISABLE_MOXA_MUST_ENCHANCE_MODE(io); | ||
438 | oldmcr = inb(io + UART_MCR); | ||
439 | outb(0, io + UART_MCR); | ||
440 | SET_MOXA_MUST_XON1_VALUE(io, 0x11); | ||
441 | if ((hwid = inb(io + UART_MCR)) != 0) { | ||
442 | outb(oldmcr, io + UART_MCR); | ||
443 | return MOXA_OTHER_UART; | ||
444 | } | ||
445 | |||
446 | GET_MOXA_MUST_HARDWARE_ID(io, &hwid); | ||
447 | for (i = 0; i < UART_TYPE_NUM; i++) { | ||
448 | if (hwid == Gmoxa_uart_id[i]) | ||
449 | return (int)hwid; | ||
450 | } | ||
451 | return MOXA_OTHER_UART; | ||
452 | } | ||
453 | |||
454 | /* above is modified by Victor Yu. 08-15-2002 */ | ||
455 | |||
456 | static const struct tty_operations mxser_ops = { | ||
457 | .open = mxser_open, | ||
458 | .close = mxser_close, | ||
459 | .write = mxser_write, | ||
460 | .put_char = mxser_put_char, | ||
461 | .flush_chars = mxser_flush_chars, | ||
462 | .write_room = mxser_write_room, | ||
463 | .chars_in_buffer = mxser_chars_in_buffer, | ||
464 | .flush_buffer = mxser_flush_buffer, | ||
465 | .ioctl = mxser_ioctl, | ||
466 | .throttle = mxser_throttle, | ||
467 | .unthrottle = mxser_unthrottle, | ||
468 | .set_termios = mxser_set_termios, | ||
469 | .stop = mxser_stop, | ||
470 | .start = mxser_start, | ||
471 | .hangup = mxser_hangup, | ||
472 | .break_ctl = mxser_rs_break, | ||
473 | .wait_until_sent = mxser_wait_until_sent, | ||
474 | .tiocmget = mxser_tiocmget, | ||
475 | .tiocmset = mxser_tiocmset, | ||
476 | }; | ||
477 | |||
478 | /* | ||
479 | * The MOXA Smartio/Industio serial driver boot-time initialization code! | ||
480 | */ | ||
481 | |||
482 | static int __init mxser_module_init(void) | ||
483 | { | ||
484 | int ret; | ||
485 | |||
486 | if (verbose) | ||
487 | printk(KERN_DEBUG "Loading module mxser ...\n"); | ||
488 | ret = mxser_init(); | ||
489 | if (verbose) | ||
490 | printk(KERN_DEBUG "Done.\n"); | ||
491 | return ret; | ||
492 | } | ||
493 | |||
494 | static void __exit mxser_module_exit(void) | ||
495 | { | ||
496 | int i, err; | ||
497 | |||
498 | if (verbose) | ||
499 | printk(KERN_DEBUG "Unloading module mxser ...\n"); | ||
500 | |||
501 | err = tty_unregister_driver(mxvar_sdriver); | ||
502 | if (!err) | ||
503 | put_tty_driver(mxvar_sdriver); | ||
504 | else | ||
505 | printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n"); | ||
506 | |||
507 | for (i = 0; i < MXSER_BOARDS; i++) { | ||
508 | struct pci_dev *pdev; | ||
509 | |||
510 | if (mxsercfg[i].board_type == -1) | ||
511 | continue; | ||
512 | else { | ||
513 | pdev = mxsercfg[i].pciInfo.pdev; | ||
514 | free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]); | ||
515 | if (pdev != NULL) { /* PCI */ | ||
516 | release_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2)); | ||
517 | release_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3)); | ||
518 | pci_dev_put(pdev); | ||
519 | } else { | ||
520 | release_region(mxsercfg[i].ioaddr[0], 8 * mxsercfg[i].ports); | ||
521 | release_region(mxsercfg[i].vector, 1); | ||
522 | } | ||
523 | } | ||
524 | } | ||
525 | if (verbose) | ||
526 | printk(KERN_DEBUG "Done.\n"); | ||
527 | } | ||
528 | |||
529 | static void process_txrx_fifo(struct mxser_struct *info) | ||
530 | { | ||
531 | int i; | ||
532 | |||
533 | if ((info->type == PORT_16450) || (info->type == PORT_8250)) { | ||
534 | info->rx_trigger = 1; | ||
535 | info->rx_high_water = 1; | ||
536 | info->rx_low_water = 1; | ||
537 | info->xmit_fifo_size = 1; | ||
538 | } else { | ||
539 | for (i = 0; i < UART_INFO_NUM; i++) { | ||
540 | if (info->IsMoxaMustChipFlag == Gpci_uart_info[i].type) { | ||
541 | info->rx_trigger = Gpci_uart_info[i].rx_trigger; | ||
542 | info->rx_low_water = Gpci_uart_info[i].rx_low_water; | ||
543 | info->rx_high_water = Gpci_uart_info[i].rx_high_water; | ||
544 | info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size; | ||
545 | break; | ||
546 | } | ||
547 | } | ||
548 | } | ||
549 | } | ||
550 | |||
551 | static int mxser_initbrd(int board, struct mxser_hwconf *hwconf) | ||
552 | { | ||
553 | struct mxser_struct *info; | ||
554 | int retval; | ||
555 | int i, n; | ||
556 | |||
557 | n = board * MXSER_PORTS_PER_BOARD; | ||
558 | info = &mxvar_table[n]; | ||
559 | /*if (verbose) */ { | ||
560 | printk(KERN_DEBUG " ttyM%d - ttyM%d ", | ||
561 | n, n + hwconf->ports - 1); | ||
562 | printk(" max. baud rate = %d bps.\n", | ||
563 | hwconf->MaxCanSetBaudRate[0]); | ||
564 | } | ||
565 | |||
566 | for (i = 0; i < hwconf->ports; i++, n++, info++) { | ||
567 | info->port = n; | ||
568 | info->base = hwconf->ioaddr[i]; | ||
569 | info->irq = hwconf->irq; | ||
570 | info->vector = hwconf->vector; | ||
571 | info->vectormask = hwconf->vector_mask; | ||
572 | info->opmode_ioaddr = hwconf->opmode_ioaddr[i]; /* add by Victor Yu. 01-05-2004 */ | ||
573 | info->stop_rx = 0; | ||
574 | info->ldisc_stop_rx = 0; | ||
575 | |||
576 | info->IsMoxaMustChipFlag = hwconf->IsMoxaMustChipFlag; | ||
577 | /* Enhance mode enabled here */ | ||
578 | if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) { | ||
579 | ENABLE_MOXA_MUST_ENCHANCE_MODE(info->base); | ||
580 | } | ||
581 | |||
582 | info->flags = ASYNC_SHARE_IRQ; | ||
583 | info->type = hwconf->uart_type; | ||
584 | info->baud_base = hwconf->baud_base[i]; | ||
585 | |||
586 | info->MaxCanSetBaudRate = hwconf->MaxCanSetBaudRate[i]; | ||
587 | |||
588 | process_txrx_fifo(info); | ||
589 | |||
590 | |||
591 | info->custom_divisor = hwconf->baud_base[i] * 16; | ||
592 | info->close_delay = 5 * HZ / 10; | ||
593 | info->closing_wait = 30 * HZ; | ||
594 | INIT_WORK(&info->tqueue, mxser_do_softint, info); | ||
595 | info->normal_termios = mxvar_sdriver->init_termios; | ||
596 | init_waitqueue_head(&info->open_wait); | ||
597 | init_waitqueue_head(&info->close_wait); | ||
598 | init_waitqueue_head(&info->delta_msr_wait); | ||
599 | memset(&info->mon_data, 0, sizeof(struct mxser_mon)); | ||
600 | info->err_shadow = 0; | ||
601 | spin_lock_init(&info->slock); | ||
602 | } | ||
603 | /* | ||
604 | * Allocate the IRQ if necessary | ||
605 | */ | ||
606 | |||
607 | |||
608 | /* before set INT ISR, disable all int */ | ||
609 | for (i = 0; i < hwconf->ports; i++) { | ||
610 | outb(inb(hwconf->ioaddr[i] + UART_IER) & 0xf0, | ||
611 | hwconf->ioaddr[i] + UART_IER); | ||
612 | } | ||
613 | |||
614 | n = board * MXSER_PORTS_PER_BOARD; | ||
615 | info = &mxvar_table[n]; | ||
616 | |||
617 | retval = request_irq(hwconf->irq, mxser_interrupt, IRQ_T(info), | ||
618 | "mxser", info); | ||
619 | if (retval) { | ||
620 | printk(KERN_ERR "Board %d: %s", | ||
621 | board, mxser_brdname[hwconf->board_type - 1]); | ||
622 | printk(" Request irq failed, IRQ (%d) may conflict with" | ||
623 | " another device.\n", info->irq); | ||
624 | return retval; | ||
625 | } | ||
626 | return 0; | ||
627 | } | ||
628 | |||
629 | static void mxser_getcfg(int board, struct mxser_hwconf *hwconf) | ||
630 | { | ||
631 | mxsercfg[board] = *hwconf; | ||
632 | } | ||
633 | |||
634 | #ifdef CONFIG_PCI | ||
635 | static int mxser_get_PCI_conf(int busnum, int devnum, int board_type, struct mxser_hwconf *hwconf) | ||
636 | { | ||
637 | int i, j; | ||
638 | /* unsigned int val; */ | ||
639 | unsigned int ioaddress; | ||
640 | struct pci_dev *pdev = hwconf->pciInfo.pdev; | ||
641 | |||
642 | /* io address */ | ||
643 | hwconf->board_type = board_type; | ||
644 | hwconf->ports = mxser_numports[board_type - 1]; | ||
645 | ioaddress = pci_resource_start(pdev, 2); | ||
646 | request_region(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2), | ||
647 | "mxser(IO)"); | ||
648 | |||
649 | for (i = 0; i < hwconf->ports; i++) | ||
650 | hwconf->ioaddr[i] = ioaddress + 8 * i; | ||
651 | |||
652 | /* vector */ | ||
653 | ioaddress = pci_resource_start(pdev, 3); | ||
654 | request_region(pci_resource_start(pdev, 3), pci_resource_len(pdev, 3), | ||
655 | "mxser(vector)"); | ||
656 | hwconf->vector = ioaddress; | ||
657 | |||
658 | /* irq */ | ||
659 | hwconf->irq = hwconf->pciInfo.pdev->irq; | ||
660 | |||
661 | hwconf->IsMoxaMustChipFlag = CheckIsMoxaMust(hwconf->ioaddr[0]); | ||
662 | hwconf->uart_type = PORT_16550A; | ||
663 | hwconf->vector_mask = 0; | ||
664 | |||
665 | |||
666 | for (i = 0; i < hwconf->ports; i++) { | ||
667 | for (j = 0; j < UART_INFO_NUM; j++) { | ||
668 | if (Gpci_uart_info[j].type == hwconf->IsMoxaMustChipFlag) { | ||
669 | hwconf->MaxCanSetBaudRate[i] = Gpci_uart_info[j].max_baud; | ||
670 | |||
671 | /* exception....CP-102 */ | ||
672 | if (board_type == MXSER_BOARD_CP102) | ||
673 | hwconf->MaxCanSetBaudRate[i] = 921600; | ||
674 | break; | ||
675 | } | ||
676 | } | ||
677 | } | ||
678 | |||
679 | if (hwconf->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID) { | ||
680 | for (i = 0; i < hwconf->ports; i++) { | ||
681 | if (i < 4) | ||
682 | hwconf->opmode_ioaddr[i] = ioaddress + 4; | ||
683 | else | ||
684 | hwconf->opmode_ioaddr[i] = ioaddress + 0x0c; | ||
685 | } | ||
686 | outb(0, ioaddress + 4); /* default set to RS232 mode */ | ||
687 | outb(0, ioaddress + 0x0c); /* default set to RS232 mode */ | ||
688 | } | ||
689 | |||
690 | for (i = 0; i < hwconf->ports; i++) { | ||
691 | hwconf->vector_mask |= (1 << i); | ||
692 | hwconf->baud_base[i] = 921600; | ||
693 | } | ||
694 | return 0; | ||
695 | } | ||
696 | #endif | ||
697 | |||
698 | static int mxser_init(void) | ||
699 | { | ||
700 | int i, m, retval, b, n; | ||
701 | struct pci_dev *pdev = NULL; | ||
702 | int index; | ||
703 | unsigned char busnum, devnum; | ||
704 | struct mxser_hwconf hwconf; | ||
705 | |||
706 | mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); | ||
707 | if (!mxvar_sdriver) | ||
708 | return -ENOMEM; | ||
709 | spin_lock_init(&gm_lock); | ||
710 | |||
711 | for (i = 0; i < MXSER_BOARDS; i++) { | ||
712 | mxsercfg[i].board_type = -1; | ||
713 | } | ||
714 | |||
715 | printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", | ||
716 | MXSER_VERSION); | ||
717 | |||
718 | /* Initialize the tty_driver structure */ | ||
719 | memset(mxvar_sdriver, 0, sizeof(struct tty_driver)); | ||
720 | mxvar_sdriver->magic = TTY_DRIVER_MAGIC; | ||
721 | mxvar_sdriver->name = "ttyM"; | ||
722 | mxvar_sdriver->major = ttymajor; | ||
723 | mxvar_sdriver->minor_start = 0; | ||
724 | mxvar_sdriver->num = MXSER_PORTS + 1; | ||
725 | mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL; | ||
726 | mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL; | ||
727 | mxvar_sdriver->init_termios = tty_std_termios; | ||
728 | mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; | ||
729 | mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW; | ||
730 | tty_set_operations(mxvar_sdriver, &mxser_ops); | ||
731 | mxvar_sdriver->ttys = mxvar_tty; | ||
732 | mxvar_sdriver->termios = mxvar_termios; | ||
733 | mxvar_sdriver->termios_locked = mxvar_termios_locked; | ||
734 | |||
735 | mxvar_diagflag = 0; | ||
736 | memset(mxvar_table, 0, MXSER_PORTS * sizeof(struct mxser_struct)); | ||
737 | memset(&mxvar_log, 0, sizeof(struct mxser_log)); | ||
738 | |||
739 | memset(&mxser_msr, 0, sizeof(unsigned char) * (MXSER_PORTS + 1)); | ||
740 | memset(&mon_data_ext, 0, sizeof(struct mxser_mon_ext)); | ||
741 | memset(&mxser_set_baud_method, 0, sizeof(int) * (MXSER_PORTS + 1)); | ||
742 | memset(&hwconf, 0, sizeof(struct mxser_hwconf)); | ||
743 | |||
744 | m = 0; | ||
745 | /* Start finding ISA boards here */ | ||
746 | for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) { | ||
747 | int cap; | ||
748 | |||
749 | if (!(cap = mxserBoardCAP[b])) | ||
750 | continue; | ||
751 | |||
752 | retval = mxser_get_ISA_conf(cap, &hwconf); | ||
753 | |||
754 | if (retval != 0) | ||
755 | printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", | ||
756 | mxser_brdname[hwconf.board_type - 1], ioaddr[b]); | ||
757 | |||
758 | if (retval <= 0) { | ||
759 | if (retval == MXSER_ERR_IRQ) | ||
760 | printk(KERN_ERR "Invalid interrupt number, " | ||
761 | "board not configured\n"); | ||
762 | else if (retval == MXSER_ERR_IRQ_CONFLIT) | ||
763 | printk(KERN_ERR "Invalid interrupt number, " | ||
764 | "board not configured\n"); | ||
765 | else if (retval == MXSER_ERR_VECTOR) | ||
766 | printk(KERN_ERR "Invalid interrupt vector, " | ||
767 | "board not configured\n"); | ||
768 | else if (retval == MXSER_ERR_IOADDR) | ||
769 | printk(KERN_ERR "Invalid I/O address, " | ||
770 | "board not configured\n"); | ||
771 | |||
772 | continue; | ||
773 | } | ||
774 | |||
775 | hwconf.pciInfo.busNum = 0; | ||
776 | hwconf.pciInfo.devNum = 0; | ||
777 | hwconf.pciInfo.pdev = NULL; | ||
778 | |||
779 | mxser_getcfg(m, &hwconf); | ||
780 | /* | ||
781 | * init mxsercfg first, | ||
782 | * or mxsercfg data is not correct on ISR. | ||
783 | */ | ||
784 | /* mxser_initbrd will hook ISR. */ | ||
785 | if (mxser_initbrd(m, &hwconf) < 0) | ||
786 | continue; | ||
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 | |||
795 | if (!(cap = ioaddr[b])) | ||
796 | continue; | ||
797 | |||
798 | retval = mxser_get_ISA_conf(cap, &hwconf); | ||
799 | |||
800 | if (retval != 0) | ||
801 | printk(KERN_INFO "Found MOXA %s board (CAP=0x%x)\n", | ||
802 | mxser_brdname[hwconf.board_type - 1], ioaddr[b]); | ||
803 | |||
804 | if (retval <= 0) { | ||
805 | if (retval == MXSER_ERR_IRQ) | ||
806 | printk(KERN_ERR "Invalid interrupt number, " | ||
807 | "board not configured\n"); | ||
808 | else if (retval == MXSER_ERR_IRQ_CONFLIT) | ||
809 | printk(KERN_ERR "Invalid interrupt number, " | ||
810 | "board not configured\n"); | ||
811 | else if (retval == MXSER_ERR_VECTOR) | ||
812 | printk(KERN_ERR "Invalid interrupt vector, " | ||
813 | "board not configured\n"); | ||
814 | else if (retval == MXSER_ERR_IOADDR) | ||
815 | printk(KERN_ERR "Invalid I/O address, " | ||
816 | "board not configured\n"); | ||
817 | |||
818 | continue; | ||
819 | } | ||
820 | |||
821 | hwconf.pciInfo.busNum = 0; | ||
822 | hwconf.pciInfo.devNum = 0; | ||
823 | hwconf.pciInfo.pdev = NULL; | ||
824 | |||
825 | mxser_getcfg(m, &hwconf); | ||
826 | /* | ||
827 | * init mxsercfg first, | ||
828 | * or mxsercfg data is not correct on ISR. | ||
829 | */ | ||
830 | /* mxser_initbrd will hook ISR. */ | ||
831 | if (mxser_initbrd(m, &hwconf) < 0) | ||
832 | continue; | ||
833 | |||
834 | m++; | ||
835 | } | ||
836 | |||
837 | /* start finding PCI board here */ | ||
838 | #ifdef CONFIG_PCI | ||
839 | n = ARRAY_SIZE(mxser_pcibrds) - 1; | ||
840 | index = 0; | ||
841 | b = 0; | ||
842 | while (b < n) { | ||
843 | pdev = pci_get_device(mxser_pcibrds[b].vendor, | ||
844 | mxser_pcibrds[b].device, pdev); | ||
845 | if (pdev == NULL) { | ||
846 | b++; | ||
847 | continue; | ||
848 | } | ||
849 | hwconf.pciInfo.busNum = busnum = pdev->bus->number; | ||
850 | hwconf.pciInfo.devNum = devnum = PCI_SLOT(pdev->devfn) << 3; | ||
851 | hwconf.pciInfo.pdev = pdev; | ||
852 | printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n", | ||
853 | mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1], | ||
854 | busnum, devnum >> 3); | ||
855 | index++; | ||
856 | if (m >= MXSER_BOARDS) | ||
857 | printk(KERN_ERR | ||
858 | "Too many Smartio/Industio family boards find " | ||
859 | "(maximum %d), board not configured\n", | ||
860 | MXSER_BOARDS); | ||
861 | else { | ||
862 | if (pci_enable_device(pdev)) { | ||
863 | printk(KERN_ERR "Moxa SmartI/O PCI enable " | ||
864 | "fail !\n"); | ||
865 | continue; | ||
866 | } | ||
867 | retval = mxser_get_PCI_conf(busnum, devnum, | ||
868 | (int)mxser_pcibrds[b].driver_data, | ||
869 | &hwconf); | ||
870 | if (retval < 0) { | ||
871 | if (retval == MXSER_ERR_IRQ) | ||
872 | printk(KERN_ERR | ||
873 | "Invalid interrupt number, " | ||
874 | "board not configured\n"); | ||
875 | else if (retval == MXSER_ERR_IRQ_CONFLIT) | ||
876 | printk(KERN_ERR | ||
877 | "Invalid interrupt number, " | ||
878 | "board not configured\n"); | ||
879 | else if (retval == MXSER_ERR_VECTOR) | ||
880 | printk(KERN_ERR | ||
881 | "Invalid interrupt vector, " | ||
882 | "board not configured\n"); | ||
883 | else if (retval == MXSER_ERR_IOADDR) | ||
884 | printk(KERN_ERR | ||
885 | "Invalid I/O address, " | ||
886 | "board not configured\n"); | ||
887 | continue; | ||
888 | } | ||
889 | mxser_getcfg(m, &hwconf); | ||
890 | /* init mxsercfg first, | ||
891 | * or mxsercfg data is not correct on ISR. | ||
892 | */ | ||
893 | /* mxser_initbrd will hook ISR. */ | ||
894 | if (mxser_initbrd(m, &hwconf) < 0) | ||
895 | continue; | ||
896 | m++; | ||
897 | /* Keep an extra reference if we succeeded. It will | ||
898 | be returned at unload time */ | ||
899 | pci_dev_get(pdev); | ||
900 | } | ||
901 | } | ||
902 | #endif | ||
903 | |||
904 | retval = tty_register_driver(mxvar_sdriver); | ||
905 | if (retval) { | ||
906 | printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family" | ||
907 | " driver !\n"); | ||
908 | put_tty_driver(mxvar_sdriver); | ||
909 | |||
910 | for (i = 0; i < MXSER_BOARDS; i++) { | ||
911 | if (mxsercfg[i].board_type == -1) | ||
912 | continue; | ||
913 | else { | ||
914 | free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]); | ||
915 | /* todo: release io, vector */ | ||
916 | } | ||
917 | } | ||
918 | return retval; | ||
919 | } | ||
920 | |||
921 | return 0; | ||
922 | } | ||
923 | |||
924 | static void mxser_do_softint(void *private_) | ||
925 | { | ||
926 | struct mxser_struct *info = private_; | ||
927 | struct tty_struct *tty; | ||
928 | |||
929 | tty = info->tty; | ||
930 | |||
931 | if (tty) { | ||
932 | if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event)) | ||
933 | tty_wakeup(tty); | ||
934 | if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event)) | ||
935 | tty_hangup(tty); | ||
936 | } | ||
937 | } | ||
938 | |||
939 | static unsigned char mxser_get_msr(int baseaddr, int mode, int port, struct mxser_struct *info) | ||
940 | { | ||
941 | unsigned char status = 0; | ||
942 | |||
943 | status = inb(baseaddr + UART_MSR); | ||
944 | |||
945 | mxser_msr[port] &= 0x0F; | ||
946 | mxser_msr[port] |= status; | ||
947 | status = mxser_msr[port]; | ||
948 | if (mode) | ||
949 | mxser_msr[port] = 0; | ||
950 | |||
951 | return status; | ||
952 | } | ||
953 | |||
954 | /* | ||
955 | * This routine is called whenever a serial port is opened. It | ||
956 | * enables interrupts for a serial port, linking in its async structure into | ||
957 | * the IRQ chain. It also performs the serial-specific | ||
958 | * initialization for the tty structure. | ||
959 | */ | ||
960 | static int mxser_open(struct tty_struct *tty, struct file *filp) | ||
961 | { | ||
962 | struct mxser_struct *info; | ||
963 | int retval, line; | ||
964 | |||
965 | /* initialize driver_data in case something fails */ | ||
966 | tty->driver_data = NULL; | ||
967 | |||
968 | line = tty->index; | ||
969 | if (line == MXSER_PORTS) | ||
970 | return 0; | ||
971 | if (line < 0 || line > MXSER_PORTS) | ||
972 | return -ENODEV; | ||
973 | info = mxvar_table + line; | ||
974 | if (!info->base) | ||
975 | return -ENODEV; | ||
976 | |||
977 | tty->driver_data = info; | ||
978 | info->tty = tty; | ||
979 | /* | ||
980 | * Start up serial port | ||
981 | */ | ||
982 | retval = mxser_startup(info); | ||
983 | if (retval) | ||
984 | return retval; | ||
985 | |||
986 | retval = mxser_block_til_ready(tty, filp, info); | ||
987 | if (retval) | ||
988 | return retval; | ||
989 | |||
990 | info->count++; | ||
991 | |||
992 | if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) { | ||
993 | if (tty->driver->subtype == SERIAL_TYPE_NORMAL) | ||
994 | *tty->termios = info->normal_termios; | ||
995 | else | ||
996 | *tty->termios = info->callout_termios; | ||
997 | mxser_change_speed(info, NULL); | ||
998 | } | ||
999 | |||
1000 | info->session = current->signal->session; | ||
1001 | info->pgrp = process_group(current); | ||
1002 | |||
1003 | /* | ||
1004 | status = mxser_get_msr(info->base, 0, info->port); | ||
1005 | mxser_check_modem_status(info, status); | ||
1006 | */ | ||
1007 | |||
1008 | /* unmark here for very high baud rate (ex. 921600 bps) used */ | ||
1009 | tty->low_latency = 1; | ||
1010 | return 0; | ||
1011 | } | ||
1012 | |||
1013 | /* | ||
1014 | * This routine is called when the serial port gets closed. First, we | ||
1015 | * wait for the last remaining data to be sent. Then, we unlink its | ||
1016 | * async structure from the interrupt chain if necessary, and we free | ||
1017 | * that IRQ if nothing is left in the chain. | ||
1018 | */ | ||
1019 | static void mxser_close(struct tty_struct *tty, struct file *filp) | ||
1020 | { | ||
1021 | struct mxser_struct *info = tty->driver_data; | ||
1022 | |||
1023 | unsigned long timeout; | ||
1024 | unsigned long flags; | ||
1025 | struct tty_ldisc *ld; | ||
1026 | |||
1027 | if (tty->index == MXSER_PORTS) | ||
1028 | return; | ||
1029 | if (!info) | ||
1030 | return; | ||
1031 | |||
1032 | spin_lock_irqsave(&info->slock, flags); | ||
1033 | |||
1034 | if (tty_hung_up_p(filp)) { | ||
1035 | spin_unlock_irqrestore(&info->slock, flags); | ||
1036 | return; | ||
1037 | } | ||
1038 | if ((tty->count == 1) && (info->count != 1)) { | ||
1039 | /* | ||
1040 | * Uh, oh. tty->count is 1, which means that the tty | ||
1041 | * structure will be freed. Info->count should always | ||
1042 | * be one in these conditions. If it's greater than | ||
1043 | * one, we've got real problems, since it means the | ||
1044 | * serial port won't be shutdown. | ||
1045 | */ | ||
1046 | printk(KERN_ERR "mxser_close: bad serial port count; " | ||
1047 | "tty->count is 1, info->count is %d\n", info->count); | ||
1048 | info->count = 1; | ||
1049 | } | ||
1050 | if (--info->count < 0) { | ||
1051 | printk(KERN_ERR "mxser_close: bad serial port count for " | ||
1052 | "ttys%d: %d\n", info->port, info->count); | ||
1053 | info->count = 0; | ||
1054 | } | ||
1055 | if (info->count) { | ||
1056 | spin_unlock_irqrestore(&info->slock, flags); | ||
1057 | return; | ||
1058 | } | ||
1059 | info->flags |= ASYNC_CLOSING; | ||
1060 | spin_unlock_irqrestore(&info->slock, flags); | ||
1061 | /* | ||
1062 | * Save the termios structure, since this port may have | ||
1063 | * separate termios for callout and dialin. | ||
1064 | */ | ||
1065 | if (info->flags & ASYNC_NORMAL_ACTIVE) | ||
1066 | info->normal_termios = *tty->termios; | ||
1067 | /* | ||
1068 | * Now we wait for the transmit buffer to clear; and we notify | ||
1069 | * the line discipline to only process XON/XOFF characters. | ||
1070 | */ | ||
1071 | tty->closing = 1; | ||
1072 | if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) | ||
1073 | tty_wait_until_sent(tty, info->closing_wait); | ||
1074 | /* | ||
1075 | * At this point we stop accepting input. To do this, we | ||
1076 | * disable the receive line status interrupts, and tell the | ||
1077 | * interrupt driver to stop checking the data ready bit in the | ||
1078 | * line status register. | ||
1079 | */ | ||
1080 | info->IER &= ~UART_IER_RLSI; | ||
1081 | if (info->IsMoxaMustChipFlag) | ||
1082 | info->IER &= ~MOXA_MUST_RECV_ISR; | ||
1083 | /* by William | ||
1084 | info->read_status_mask &= ~UART_LSR_DR; | ||
1085 | */ | ||
1086 | if (info->flags & ASYNC_INITIALIZED) { | ||
1087 | outb(info->IER, info->base + UART_IER); | ||
1088 | /* | ||
1089 | * Before we drop DTR, make sure the UART transmitter | ||
1090 | * has completely drained; this is especially | ||
1091 | * important if there is a transmit FIFO! | ||
1092 | */ | ||
1093 | timeout = jiffies + HZ; | ||
1094 | while (!(inb(info->base + UART_LSR) & UART_LSR_TEMT)) { | ||
1095 | schedule_timeout_interruptible(5); | ||
1096 | if (time_after(jiffies, timeout)) | ||
1097 | break; | ||
1098 | } | ||
1099 | } | ||
1100 | mxser_shutdown(info); | ||
1101 | |||
1102 | if (tty->driver->flush_buffer) | ||
1103 | tty->driver->flush_buffer(tty); | ||
1104 | |||
1105 | ld = tty_ldisc_ref(tty); | ||
1106 | if (ld) { | ||
1107 | if (ld->flush_buffer) | ||
1108 | ld->flush_buffer(tty); | ||
1109 | tty_ldisc_deref(ld); | ||
1110 | } | ||
1111 | |||
1112 | tty->closing = 0; | ||
1113 | info->event = 0; | ||
1114 | info->tty = NULL; | ||
1115 | if (info->blocked_open) { | ||
1116 | if (info->close_delay) | ||
1117 | schedule_timeout_interruptible(info->close_delay); | ||
1118 | wake_up_interruptible(&info->open_wait); | ||
1119 | } | ||
1120 | |||
1121 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); | ||
1122 | wake_up_interruptible(&info->close_wait); | ||
1123 | |||
1124 | } | ||
1125 | |||
1126 | static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count) | ||
1127 | { | ||
1128 | int c, total = 0; | ||
1129 | struct mxser_struct *info = tty->driver_data; | ||
1130 | unsigned long flags; | ||
1131 | |||
1132 | if (!info->xmit_buf) | ||
1133 | return 0; | ||
1134 | |||
1135 | while (1) { | ||
1136 | c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, | ||
1137 | SERIAL_XMIT_SIZE - info->xmit_head)); | ||
1138 | if (c <= 0) | ||
1139 | break; | ||
1140 | |||
1141 | memcpy(info->xmit_buf + info->xmit_head, buf, c); | ||
1142 | spin_lock_irqsave(&info->slock, flags); | ||
1143 | info->xmit_head = (info->xmit_head + c) & | ||
1144 | (SERIAL_XMIT_SIZE - 1); | ||
1145 | info->xmit_cnt += c; | ||
1146 | spin_unlock_irqrestore(&info->slock, flags); | ||
1147 | |||
1148 | buf += c; | ||
1149 | count -= c; | ||
1150 | total += c; | ||
1151 | } | ||
1152 | |||
1153 | if (info->xmit_cnt && !tty->stopped && !(info->IER & UART_IER_THRI)) { | ||
1154 | if (!tty->hw_stopped || | ||
1155 | (info->type == PORT_16550A) || | ||
1156 | (info->IsMoxaMustChipFlag)) { | ||
1157 | spin_lock_irqsave(&info->slock, flags); | ||
1158 | info->IER |= UART_IER_THRI; | ||
1159 | outb(info->IER, info->base + UART_IER); | ||
1160 | spin_unlock_irqrestore(&info->slock, flags); | ||
1161 | } | ||
1162 | } | ||
1163 | return total; | ||
1164 | } | ||
1165 | |||
1166 | static void mxser_put_char(struct tty_struct *tty, unsigned char ch) | ||
1167 | { | ||
1168 | struct mxser_struct *info = tty->driver_data; | ||
1169 | unsigned long flags; | ||
1170 | |||
1171 | if (!info->xmit_buf) | ||
1172 | return; | ||
1173 | |||
1174 | if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) | ||
1175 | return; | ||
1176 | |||
1177 | spin_lock_irqsave(&info->slock, flags); | ||
1178 | info->xmit_buf[info->xmit_head++] = ch; | ||
1179 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; | ||
1180 | info->xmit_cnt++; | ||
1181 | spin_unlock_irqrestore(&info->slock, flags); | ||
1182 | if (!tty->stopped && !(info->IER & UART_IER_THRI)) { | ||
1183 | if (!tty->hw_stopped || | ||
1184 | (info->type == PORT_16550A) || | ||
1185 | info->IsMoxaMustChipFlag) { | ||
1186 | spin_lock_irqsave(&info->slock, flags); | ||
1187 | info->IER |= UART_IER_THRI; | ||
1188 | outb(info->IER, info->base + UART_IER); | ||
1189 | spin_unlock_irqrestore(&info->slock, flags); | ||
1190 | } | ||
1191 | } | ||
1192 | } | ||
1193 | |||
1194 | |||
1195 | static void mxser_flush_chars(struct tty_struct *tty) | ||
1196 | { | ||
1197 | struct mxser_struct *info = tty->driver_data; | ||
1198 | unsigned long flags; | ||
1199 | |||
1200 | if (info->xmit_cnt <= 0 || | ||
1201 | tty->stopped || | ||
1202 | !info->xmit_buf || | ||
1203 | (tty->hw_stopped && | ||
1204 | (info->type != PORT_16550A) && | ||
1205 | (!info->IsMoxaMustChipFlag) | ||
1206 | )) | ||
1207 | return; | ||
1208 | |||
1209 | spin_lock_irqsave(&info->slock, flags); | ||
1210 | |||
1211 | info->IER |= UART_IER_THRI; | ||
1212 | outb(info->IER, info->base + UART_IER); | ||
1213 | |||
1214 | spin_unlock_irqrestore(&info->slock, flags); | ||
1215 | } | ||
1216 | |||
1217 | static int mxser_write_room(struct tty_struct *tty) | ||
1218 | { | ||
1219 | struct mxser_struct *info = tty->driver_data; | ||
1220 | int ret; | ||
1221 | |||
1222 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | ||
1223 | if (ret < 0) | ||
1224 | ret = 0; | ||
1225 | return ret; | ||
1226 | } | ||
1227 | |||
1228 | static int mxser_chars_in_buffer(struct tty_struct *tty) | ||
1229 | { | ||
1230 | struct mxser_struct *info = tty->driver_data; | ||
1231 | return info->xmit_cnt; | ||
1232 | } | ||
1233 | |||
1234 | static void mxser_flush_buffer(struct tty_struct *tty) | ||
1235 | { | ||
1236 | struct mxser_struct *info = tty->driver_data; | ||
1237 | char fcr; | ||
1238 | unsigned long flags; | ||
1239 | |||
1240 | |||
1241 | spin_lock_irqsave(&info->slock, flags); | ||
1242 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | ||
1243 | |||
1244 | /* below added by shinhay */ | ||
1245 | fcr = inb(info->base + UART_FCR); | ||
1246 | outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), | ||
1247 | info->base + UART_FCR); | ||
1248 | outb(fcr, info->base + UART_FCR); | ||
1249 | |||
1250 | spin_unlock_irqrestore(&info->slock, flags); | ||
1251 | /* above added by shinhay */ | ||
1252 | |||
1253 | wake_up_interruptible(&tty->write_wait); | ||
1254 | if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) | ||
1255 | (tty->ldisc.write_wakeup) (tty); | ||
1256 | } | ||
1257 | |||
1258 | static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | ||
1259 | { | ||
1260 | struct mxser_struct *info = tty->driver_data; | ||
1261 | int retval; | ||
1262 | struct async_icount cprev, cnow; /* kernel counter temps */ | ||
1263 | struct serial_icounter_struct __user *p_cuser; | ||
1264 | unsigned long templ; | ||
1265 | unsigned long flags; | ||
1266 | void __user *argp = (void __user *)arg; | ||
1267 | |||
1268 | if (tty->index == MXSER_PORTS) | ||
1269 | return mxser_ioctl_special(cmd, argp); | ||
1270 | |||
1271 | /* following add by Victor Yu. 01-05-2004 */ | ||
1272 | if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { | ||
1273 | int opmode, p; | ||
1274 | static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f }; | ||
1275 | int shiftbit; | ||
1276 | unsigned char val, mask; | ||
1277 | |||
1278 | p = info->port % 4; | ||
1279 | if (cmd == MOXA_SET_OP_MODE) { | ||
1280 | if (get_user(opmode, (int __user *) argp)) | ||
1281 | return -EFAULT; | ||
1282 | if (opmode != RS232_MODE && | ||
1283 | opmode != RS485_2WIRE_MODE && | ||
1284 | opmode != RS422_MODE && | ||
1285 | opmode != RS485_4WIRE_MODE) | ||
1286 | return -EFAULT; | ||
1287 | mask = ModeMask[p]; | ||
1288 | shiftbit = p * 2; | ||
1289 | val = inb(info->opmode_ioaddr); | ||
1290 | val &= mask; | ||
1291 | val |= (opmode << shiftbit); | ||
1292 | outb(val, info->opmode_ioaddr); | ||
1293 | } else { | ||
1294 | shiftbit = p * 2; | ||
1295 | opmode = inb(info->opmode_ioaddr) >> shiftbit; | ||
1296 | opmode &= OP_MODE_MASK; | ||
1297 | if (copy_to_user(argp, &opmode, sizeof(int))) | ||
1298 | return -EFAULT; | ||
1299 | } | ||
1300 | return 0; | ||
1301 | } | ||
1302 | /* above add by Victor Yu. 01-05-2004 */ | ||
1303 | |||
1304 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { | ||
1305 | if (tty->flags & (1 << TTY_IO_ERROR)) | ||
1306 | return -EIO; | ||
1307 | } | ||
1308 | switch (cmd) { | ||
1309 | case TCSBRK: /* SVID version: non-zero arg --> no break */ | ||
1310 | retval = tty_check_change(tty); | ||
1311 | if (retval) | ||
1312 | return retval; | ||
1313 | tty_wait_until_sent(tty, 0); | ||
1314 | if (!arg) | ||
1315 | mxser_send_break(info, HZ / 4); /* 1/4 second */ | ||
1316 | return 0; | ||
1317 | case TCSBRKP: /* support for POSIX tcsendbreak() */ | ||
1318 | retval = tty_check_change(tty); | ||
1319 | if (retval) | ||
1320 | return retval; | ||
1321 | tty_wait_until_sent(tty, 0); | ||
1322 | mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4); | ||
1323 | return 0; | ||
1324 | case TIOCGSOFTCAR: | ||
1325 | return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); | ||
1326 | case TIOCSSOFTCAR: | ||
1327 | if (get_user(templ, (unsigned long __user *) argp)) | ||
1328 | return -EFAULT; | ||
1329 | arg = templ; | ||
1330 | tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); | ||
1331 | return 0; | ||
1332 | case TIOCGSERIAL: | ||
1333 | return mxser_get_serial_info(info, argp); | ||
1334 | case TIOCSSERIAL: | ||
1335 | return mxser_set_serial_info(info, argp); | ||
1336 | case TIOCSERGETLSR: /* Get line status register */ | ||
1337 | return mxser_get_lsr_info(info, argp); | ||
1338 | /* | ||
1339 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | ||
1340 | * - mask passed in arg for lines of interest | ||
1341 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | ||
1342 | * Caller should use TIOCGICOUNT to see which one it was | ||
1343 | */ | ||
1344 | case TIOCMIWAIT: { | ||
1345 | DECLARE_WAITQUEUE(wait, current); | ||
1346 | int ret; | ||
1347 | spin_lock_irqsave(&info->slock, flags); | ||
1348 | cprev = info->icount; /* note the counters on entry */ | ||
1349 | spin_unlock_irqrestore(&info->slock, flags); | ||
1350 | |||
1351 | add_wait_queue(&info->delta_msr_wait, &wait); | ||
1352 | while (1) { | ||
1353 | spin_lock_irqsave(&info->slock, flags); | ||
1354 | cnow = info->icount; /* atomic copy */ | ||
1355 | spin_unlock_irqrestore(&info->slock, flags); | ||
1356 | |||
1357 | set_current_state(TASK_INTERRUPTIBLE); | ||
1358 | if (((arg & TIOCM_RNG) && | ||
1359 | (cnow.rng != cprev.rng)) || | ||
1360 | ((arg & TIOCM_DSR) && | ||
1361 | (cnow.dsr != cprev.dsr)) || | ||
1362 | ((arg & TIOCM_CD) && | ||
1363 | (cnow.dcd != cprev.dcd)) || | ||
1364 | ((arg & TIOCM_CTS) && | ||
1365 | (cnow.cts != cprev.cts))) { | ||
1366 | ret = 0; | ||
1367 | break; | ||
1368 | } | ||
1369 | /* see if a signal did it */ | ||
1370 | if (signal_pending(current)) { | ||
1371 | ret = -ERESTARTSYS; | ||
1372 | break; | ||
1373 | } | ||
1374 | cprev = cnow; | ||
1375 | } | ||
1376 | current->state = TASK_RUNNING; | ||
1377 | remove_wait_queue(&info->delta_msr_wait, &wait); | ||
1378 | break; | ||
1379 | } | ||
1380 | /* NOTREACHED */ | ||
1381 | /* | ||
1382 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | ||
1383 | * Return: write counters to the user passed counter struct | ||
1384 | * NB: both 1->0 and 0->1 transitions are counted except for | ||
1385 | * RI where only 0->1 is counted. | ||
1386 | */ | ||
1387 | case TIOCGICOUNT: | ||
1388 | spin_lock_irqsave(&info->slock, flags); | ||
1389 | cnow = info->icount; | ||
1390 | spin_unlock_irqrestore(&info->slock, flags); | ||
1391 | p_cuser = argp; | ||
1392 | /* modified by casper 1/11/2000 */ | ||
1393 | if (put_user(cnow.frame, &p_cuser->frame)) | ||
1394 | return -EFAULT; | ||
1395 | if (put_user(cnow.brk, &p_cuser->brk)) | ||
1396 | return -EFAULT; | ||
1397 | if (put_user(cnow.overrun, &p_cuser->overrun)) | ||
1398 | return -EFAULT; | ||
1399 | if (put_user(cnow.buf_overrun, &p_cuser->buf_overrun)) | ||
1400 | return -EFAULT; | ||
1401 | if (put_user(cnow.parity, &p_cuser->parity)) | ||
1402 | return -EFAULT; | ||
1403 | if (put_user(cnow.rx, &p_cuser->rx)) | ||
1404 | return -EFAULT; | ||
1405 | if (put_user(cnow.tx, &p_cuser->tx)) | ||
1406 | return -EFAULT; | ||
1407 | put_user(cnow.cts, &p_cuser->cts); | ||
1408 | put_user(cnow.dsr, &p_cuser->dsr); | ||
1409 | put_user(cnow.rng, &p_cuser->rng); | ||
1410 | put_user(cnow.dcd, &p_cuser->dcd); | ||
1411 | return 0; | ||
1412 | case MOXA_HighSpeedOn: | ||
1413 | return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp); | ||
1414 | case MOXA_SDS_RSTICOUNTER: { | ||
1415 | info->mon_data.rxcnt = 0; | ||
1416 | info->mon_data.txcnt = 0; | ||
1417 | return 0; | ||
1418 | } | ||
1419 | /* (above) added by James. */ | ||
1420 | case MOXA_ASPP_SETBAUD:{ | ||
1421 | long baud; | ||
1422 | if (get_user(baud, (long __user *)argp)) | ||
1423 | return -EFAULT; | ||
1424 | mxser_set_baud(info, baud); | ||
1425 | return 0; | ||
1426 | } | ||
1427 | case MOXA_ASPP_GETBAUD: | ||
1428 | if (copy_to_user(argp, &info->realbaud, sizeof(long))) | ||
1429 | return -EFAULT; | ||
1430 | |||
1431 | return 0; | ||
1432 | |||
1433 | case MOXA_ASPP_OQUEUE:{ | ||
1434 | int len, lsr; | ||
1435 | |||
1436 | len = mxser_chars_in_buffer(tty); | ||
1437 | |||
1438 | lsr = inb(info->base + UART_LSR) & UART_LSR_TEMT; | ||
1439 | |||
1440 | len += (lsr ? 0 : 1); | ||
1441 | |||
1442 | if (copy_to_user(argp, &len, sizeof(int))) | ||
1443 | return -EFAULT; | ||
1444 | |||
1445 | return 0; | ||
1446 | } | ||
1447 | case MOXA_ASPP_MON: { | ||
1448 | int mcr, status; | ||
1449 | |||
1450 | /* info->mon_data.ser_param = tty->termios->c_cflag; */ | ||
1451 | |||
1452 | status = mxser_get_msr(info->base, 1, info->port, info); | ||
1453 | mxser_check_modem_status(info, status); | ||
1454 | |||
1455 | mcr = inb(info->base + UART_MCR); | ||
1456 | if (mcr & MOXA_MUST_MCR_XON_FLAG) | ||
1457 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD; | ||
1458 | else | ||
1459 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD; | ||
1460 | |||
1461 | if (mcr & MOXA_MUST_MCR_TX_XON) | ||
1462 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT; | ||
1463 | else | ||
1464 | info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT; | ||
1465 | |||
1466 | if (info->tty->hw_stopped) | ||
1467 | info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; | ||
1468 | else | ||
1469 | info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; | ||
1470 | |||
1471 | if (copy_to_user(argp, &info->mon_data, | ||
1472 | sizeof(struct mxser_mon))) | ||
1473 | return -EFAULT; | ||
1474 | |||
1475 | return 0; | ||
1476 | } | ||
1477 | |||
1478 | case MOXA_ASPP_LSTATUS: { | ||
1479 | if (copy_to_user(argp, &info->err_shadow, | ||
1480 | sizeof(unsigned char))) | ||
1481 | return -EFAULT; | ||
1482 | |||
1483 | info->err_shadow = 0; | ||
1484 | return 0; | ||
1485 | } | ||
1486 | case MOXA_SET_BAUD_METHOD: { | ||
1487 | int method; | ||
1488 | |||
1489 | if (get_user(method, (int __user *)argp)) | ||
1490 | return -EFAULT; | ||
1491 | mxser_set_baud_method[info->port] = method; | ||
1492 | if (copy_to_user(argp, &method, sizeof(int))) | ||
1493 | return -EFAULT; | ||
1494 | |||
1495 | return 0; | ||
1496 | } | ||
1497 | default: | ||
1498 | return -ENOIOCTLCMD; | ||
1499 | } | ||
1500 | return 0; | ||
1501 | } | ||
1502 | |||
1503 | #ifndef CMSPAR | ||
1504 | #define CMSPAR 010000000000 | ||
1505 | #endif | ||
1506 | |||
1507 | static int mxser_ioctl_special(unsigned int cmd, void __user *argp) | ||
1508 | { | ||
1509 | int i, result, status; | ||
1510 | |||
1511 | switch (cmd) { | ||
1512 | case MOXA_GET_CONF: | ||
1513 | if (copy_to_user(argp, mxsercfg, | ||
1514 | sizeof(struct mxser_hwconf) * 4)) | ||
1515 | return -EFAULT; | ||
1516 | return 0; | ||
1517 | case MOXA_GET_MAJOR: | ||
1518 | if (copy_to_user(argp, &ttymajor, sizeof(int))) | ||
1519 | return -EFAULT; | ||
1520 | return 0; | ||
1521 | |||
1522 | case MOXA_GET_CUMAJOR: | ||
1523 | if (copy_to_user(argp, &calloutmajor, sizeof(int))) | ||
1524 | return -EFAULT; | ||
1525 | return 0; | ||
1526 | |||
1527 | case MOXA_CHKPORTENABLE: | ||
1528 | result = 0; | ||
1529 | for (i = 0; i < MXSER_PORTS; i++) { | ||
1530 | if (mxvar_table[i].base) | ||
1531 | result |= (1 << i); | ||
1532 | } | ||
1533 | return put_user(result, (unsigned long __user *)argp); | ||
1534 | case MOXA_GETDATACOUNT: | ||
1535 | if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log))) | ||
1536 | return -EFAULT; | ||
1537 | return 0; | ||
1538 | case MOXA_GETMSTATUS: | ||
1539 | for (i = 0; i < MXSER_PORTS; i++) { | ||
1540 | GMStatus[i].ri = 0; | ||
1541 | if (!mxvar_table[i].base) { | ||
1542 | GMStatus[i].dcd = 0; | ||
1543 | GMStatus[i].dsr = 0; | ||
1544 | GMStatus[i].cts = 0; | ||
1545 | continue; | ||
1546 | } | ||
1547 | |||
1548 | if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios) | ||
1549 | GMStatus[i].cflag = mxvar_table[i].normal_termios.c_cflag; | ||
1550 | else | ||
1551 | GMStatus[i].cflag = mxvar_table[i].tty->termios->c_cflag; | ||
1552 | |||
1553 | status = inb(mxvar_table[i].base + UART_MSR); | ||
1554 | if (status & 0x80 /*UART_MSR_DCD */ ) | ||
1555 | GMStatus[i].dcd = 1; | ||
1556 | else | ||
1557 | GMStatus[i].dcd = 0; | ||
1558 | |||
1559 | if (status & 0x20 /*UART_MSR_DSR */ ) | ||
1560 | GMStatus[i].dsr = 1; | ||
1561 | else | ||
1562 | GMStatus[i].dsr = 0; | ||
1563 | |||
1564 | |||
1565 | if (status & 0x10 /*UART_MSR_CTS */ ) | ||
1566 | GMStatus[i].cts = 1; | ||
1567 | else | ||
1568 | GMStatus[i].cts = 0; | ||
1569 | } | ||
1570 | if (copy_to_user(argp, GMStatus, | ||
1571 | sizeof(struct mxser_mstatus) * MXSER_PORTS)) | ||
1572 | return -EFAULT; | ||
1573 | return 0; | ||
1574 | case MOXA_ASPP_MON_EXT: { | ||
1575 | int status; | ||
1576 | int opmode, p; | ||
1577 | int shiftbit; | ||
1578 | unsigned cflag, iflag; | ||
1579 | |||
1580 | for (i = 0; i < MXSER_PORTS; i++) { | ||
1581 | if (!mxvar_table[i].base) | ||
1582 | continue; | ||
1583 | |||
1584 | status = mxser_get_msr(mxvar_table[i].base, 0, | ||
1585 | i, &(mxvar_table[i])); | ||
1586 | /* | ||
1587 | mxser_check_modem_status(&mxvar_table[i], | ||
1588 | status); | ||
1589 | */ | ||
1590 | if (status & UART_MSR_TERI) | ||
1591 | mxvar_table[i].icount.rng++; | ||
1592 | if (status & UART_MSR_DDSR) | ||
1593 | mxvar_table[i].icount.dsr++; | ||
1594 | if (status & UART_MSR_DDCD) | ||
1595 | mxvar_table[i].icount.dcd++; | ||
1596 | if (status & UART_MSR_DCTS) | ||
1597 | mxvar_table[i].icount.cts++; | ||
1598 | |||
1599 | mxvar_table[i].mon_data.modem_status = status; | ||
1600 | mon_data_ext.rx_cnt[i] = mxvar_table[i].mon_data.rxcnt; | ||
1601 | mon_data_ext.tx_cnt[i] = mxvar_table[i].mon_data.txcnt; | ||
1602 | mon_data_ext.up_rxcnt[i] = mxvar_table[i].mon_data.up_rxcnt; | ||
1603 | mon_data_ext.up_txcnt[i] = mxvar_table[i].mon_data.up_txcnt; | ||
1604 | mon_data_ext.modem_status[i] = mxvar_table[i].mon_data.modem_status; | ||
1605 | mon_data_ext.baudrate[i] = mxvar_table[i].realbaud; | ||
1606 | |||
1607 | if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios) { | ||
1608 | cflag = mxvar_table[i].normal_termios.c_cflag; | ||
1609 | iflag = mxvar_table[i].normal_termios.c_iflag; | ||
1610 | } else { | ||
1611 | cflag = mxvar_table[i].tty->termios->c_cflag; | ||
1612 | iflag = mxvar_table[i].tty->termios->c_iflag; | ||
1613 | } | ||
1614 | |||
1615 | mon_data_ext.databits[i] = cflag & CSIZE; | ||
1616 | |||
1617 | mon_data_ext.stopbits[i] = cflag & CSTOPB; | ||
1618 | |||
1619 | mon_data_ext.parity[i] = cflag & (PARENB | PARODD | CMSPAR); | ||
1620 | |||
1621 | mon_data_ext.flowctrl[i] = 0x00; | ||
1622 | |||
1623 | if (cflag & CRTSCTS) | ||
1624 | mon_data_ext.flowctrl[i] |= 0x03; | ||
1625 | |||
1626 | if (iflag & (IXON | IXOFF)) | ||
1627 | mon_data_ext.flowctrl[i] |= 0x0C; | ||
1628 | |||
1629 | if (mxvar_table[i].type == PORT_16550A) | ||
1630 | mon_data_ext.fifo[i] = 1; | ||
1631 | else | ||
1632 | mon_data_ext.fifo[i] = 0; | ||
1633 | |||
1634 | p = i % 4; | ||
1635 | shiftbit = p * 2; | ||
1636 | opmode = inb(mxvar_table[i].opmode_ioaddr) >> shiftbit; | ||
1637 | opmode &= OP_MODE_MASK; | ||
1638 | |||
1639 | mon_data_ext.iftype[i] = opmode; | ||
1640 | |||
1641 | } | ||
1642 | if (copy_to_user(argp, &mon_data_ext, sizeof(struct mxser_mon_ext))) | ||
1643 | return -EFAULT; | ||
1644 | |||
1645 | return 0; | ||
1646 | |||
1647 | } | ||
1648 | default: | ||
1649 | return -ENOIOCTLCMD; | ||
1650 | } | ||
1651 | return 0; | ||
1652 | } | ||
1653 | |||
1654 | static void mxser_stoprx(struct tty_struct *tty) | ||
1655 | { | ||
1656 | struct mxser_struct *info = tty->driver_data; | ||
1657 | /* unsigned long flags; */ | ||
1658 | |||
1659 | info->ldisc_stop_rx = 1; | ||
1660 | if (I_IXOFF(tty)) { | ||
1661 | /* MX_LOCK(&info->slock); */ | ||
1662 | /* following add by Victor Yu. 09-02-2002 */ | ||
1663 | if (info->IsMoxaMustChipFlag) { | ||
1664 | info->IER &= ~MOXA_MUST_RECV_ISR; | ||
1665 | outb(info->IER, info->base + UART_IER); | ||
1666 | } else { | ||
1667 | /* above add by Victor Yu. 09-02-2002 */ | ||
1668 | info->x_char = STOP_CHAR(tty); | ||
1669 | /* mask by Victor Yu. 09-02-2002 */ | ||
1670 | /* outb(info->IER, 0); */ | ||
1671 | outb(0, info->base + UART_IER); | ||
1672 | info->IER |= UART_IER_THRI; | ||
1673 | /* force Tx interrupt */ | ||
1674 | outb(info->IER, info->base + UART_IER); | ||
1675 | } /* add by Victor Yu. 09-02-2002 */ | ||
1676 | /* MX_UNLOCK(&info->slock); */ | ||
1677 | } | ||
1678 | |||
1679 | if (info->tty->termios->c_cflag & CRTSCTS) { | ||
1680 | /* MX_LOCK(&info->slock); */ | ||
1681 | info->MCR &= ~UART_MCR_RTS; | ||
1682 | outb(info->MCR, info->base + UART_MCR); | ||
1683 | /* MX_UNLOCK(&info->slock); */ | ||
1684 | } | ||
1685 | } | ||
1686 | |||
1687 | static void mxser_startrx(struct tty_struct *tty) | ||
1688 | { | ||
1689 | struct mxser_struct *info = tty->driver_data; | ||
1690 | /* unsigned long flags; */ | ||
1691 | |||
1692 | info->ldisc_stop_rx = 0; | ||
1693 | if (I_IXOFF(tty)) { | ||
1694 | if (info->x_char) | ||
1695 | info->x_char = 0; | ||
1696 | else { | ||
1697 | /* MX_LOCK(&info->slock); */ | ||
1698 | |||
1699 | /* following add by Victor Yu. 09-02-2002 */ | ||
1700 | if (info->IsMoxaMustChipFlag) { | ||
1701 | info->IER |= MOXA_MUST_RECV_ISR; | ||
1702 | outb(info->IER, info->base + UART_IER); | ||
1703 | } else { | ||
1704 | /* above add by Victor Yu. 09-02-2002 */ | ||
1705 | |||
1706 | info->x_char = START_CHAR(tty); | ||
1707 | /* mask by Victor Yu. 09-02-2002 */ | ||
1708 | /* outb(info->IER, 0); */ | ||
1709 | /* add by Victor Yu. 09-02-2002 */ | ||
1710 | outb(0, info->base + UART_IER); | ||
1711 | /* force Tx interrupt */ | ||
1712 | info->IER |= UART_IER_THRI; | ||
1713 | outb(info->IER, info->base + UART_IER); | ||
1714 | } /* add by Victor Yu. 09-02-2002 */ | ||
1715 | /* MX_UNLOCK(&info->slock); */ | ||
1716 | } | ||
1717 | } | ||
1718 | |||
1719 | if (info->tty->termios->c_cflag & CRTSCTS) { | ||
1720 | /* MX_LOCK(&info->slock); */ | ||
1721 | info->MCR |= UART_MCR_RTS; | ||
1722 | outb(info->MCR, info->base + UART_MCR); | ||
1723 | /* MX_UNLOCK(&info->slock); */ | ||
1724 | } | ||
1725 | } | ||
1726 | |||
1727 | /* | ||
1728 | * This routine is called by the upper-layer tty layer to signal that | ||
1729 | * incoming characters should be throttled. | ||
1730 | */ | ||
1731 | static void mxser_throttle(struct tty_struct *tty) | ||
1732 | { | ||
1733 | /* struct mxser_struct *info = tty->driver_data; */ | ||
1734 | /* unsigned long flags; */ | ||
1735 | |||
1736 | /* MX_LOCK(&info->slock); */ | ||
1737 | mxser_stoprx(tty); | ||
1738 | /* MX_UNLOCK(&info->slock); */ | ||
1739 | } | ||
1740 | |||
1741 | static void mxser_unthrottle(struct tty_struct *tty) | ||
1742 | { | ||
1743 | /* struct mxser_struct *info = tty->driver_data; */ | ||
1744 | /* unsigned long flags; */ | ||
1745 | |||
1746 | /* MX_LOCK(&info->slock); */ | ||
1747 | mxser_startrx(tty); | ||
1748 | /* MX_UNLOCK(&info->slock); */ | ||
1749 | } | ||
1750 | |||
1751 | static void mxser_set_termios(struct tty_struct *tty, struct termios *old_termios) | ||
1752 | { | ||
1753 | struct mxser_struct *info = tty->driver_data; | ||
1754 | unsigned long flags; | ||
1755 | |||
1756 | if ((tty->termios->c_cflag != old_termios->c_cflag) || | ||
1757 | (RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) { | ||
1758 | |||
1759 | mxser_change_speed(info, old_termios); | ||
1760 | |||
1761 | if ((old_termios->c_cflag & CRTSCTS) && | ||
1762 | !(tty->termios->c_cflag & CRTSCTS)) { | ||
1763 | tty->hw_stopped = 0; | ||
1764 | mxser_start(tty); | ||
1765 | } | ||
1766 | } | ||
1767 | |||
1768 | /* Handle sw stopped */ | ||
1769 | if ((old_termios->c_iflag & IXON) && | ||
1770 | !(tty->termios->c_iflag & IXON)) { | ||
1771 | tty->stopped = 0; | ||
1772 | |||
1773 | /* following add by Victor Yu. 09-02-2002 */ | ||
1774 | if (info->IsMoxaMustChipFlag) { | ||
1775 | spin_lock_irqsave(&info->slock, flags); | ||
1776 | DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | ||
1777 | spin_unlock_irqrestore(&info->slock, flags); | ||
1778 | } | ||
1779 | /* above add by Victor Yu. 09-02-2002 */ | ||
1780 | |||
1781 | mxser_start(tty); | ||
1782 | } | ||
1783 | } | ||
1784 | |||
1785 | /* | ||
1786 | * mxser_stop() and mxser_start() | ||
1787 | * | ||
1788 | * This routines are called before setting or resetting tty->stopped. | ||
1789 | * They enable or disable transmitter interrupts, as necessary. | ||
1790 | */ | ||
1791 | static void mxser_stop(struct tty_struct *tty) | ||
1792 | { | ||
1793 | struct mxser_struct *info = tty->driver_data; | ||
1794 | unsigned long flags; | ||
1795 | |||
1796 | spin_lock_irqsave(&info->slock, flags); | ||
1797 | if (info->IER & UART_IER_THRI) { | ||
1798 | info->IER &= ~UART_IER_THRI; | ||
1799 | outb(info->IER, info->base + UART_IER); | ||
1800 | } | ||
1801 | spin_unlock_irqrestore(&info->slock, flags); | ||
1802 | } | ||
1803 | |||
1804 | static void mxser_start(struct tty_struct *tty) | ||
1805 | { | ||
1806 | struct mxser_struct *info = tty->driver_data; | ||
1807 | unsigned long flags; | ||
1808 | |||
1809 | spin_lock_irqsave(&info->slock, flags); | ||
1810 | if (info->xmit_cnt && info->xmit_buf && !(info->IER & UART_IER_THRI)) { | ||
1811 | info->IER |= UART_IER_THRI; | ||
1812 | outb(info->IER, info->base + UART_IER); | ||
1813 | } | ||
1814 | spin_unlock_irqrestore(&info->slock, flags); | ||
1815 | } | ||
1816 | |||
1817 | /* | ||
1818 | * mxser_wait_until_sent() --- wait until the transmitter is empty | ||
1819 | */ | ||
1820 | static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) | ||
1821 | { | ||
1822 | struct mxser_struct *info = tty->driver_data; | ||
1823 | unsigned long orig_jiffies, char_time; | ||
1824 | int lsr; | ||
1825 | |||
1826 | if (info->type == PORT_UNKNOWN) | ||
1827 | return; | ||
1828 | |||
1829 | if (info->xmit_fifo_size == 0) | ||
1830 | return; /* Just in case.... */ | ||
1831 | |||
1832 | orig_jiffies = jiffies; | ||
1833 | /* | ||
1834 | * Set the check interval to be 1/5 of the estimated time to | ||
1835 | * send a single character, and make it at least 1. The check | ||
1836 | * interval should also be less than the timeout. | ||
1837 | * | ||
1838 | * Note: we have to use pretty tight timings here to satisfy | ||
1839 | * the NIST-PCTS. | ||
1840 | */ | ||
1841 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | ||
1842 | char_time = char_time / 5; | ||
1843 | if (char_time == 0) | ||
1844 | char_time = 1; | ||
1845 | if (timeout && timeout < char_time) | ||
1846 | char_time = timeout; | ||
1847 | /* | ||
1848 | * If the transmitter hasn't cleared in twice the approximate | ||
1849 | * amount of time to send the entire FIFO, it probably won't | ||
1850 | * ever clear. This assumes the UART isn't doing flow | ||
1851 | * control, which is currently the case. Hence, if it ever | ||
1852 | * takes longer than info->timeout, this is probably due to a | ||
1853 | * UART bug of some kind. So, we clamp the timeout parameter at | ||
1854 | * 2*info->timeout. | ||
1855 | */ | ||
1856 | if (!timeout || timeout > 2 * info->timeout) | ||
1857 | timeout = 2 * info->timeout; | ||
1858 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | ||
1859 | printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...", | ||
1860 | timeout, char_time); | ||
1861 | printk("jiff=%lu...", jiffies); | ||
1862 | #endif | ||
1863 | while (!((lsr = inb(info->base + UART_LSR)) & UART_LSR_TEMT)) { | ||
1864 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | ||
1865 | printk("lsr = %d (jiff=%lu)...", lsr, jiffies); | ||
1866 | #endif | ||
1867 | schedule_timeout_interruptible(char_time); | ||
1868 | if (signal_pending(current)) | ||
1869 | break; | ||
1870 | if (timeout && time_after(jiffies, orig_jiffies + timeout)) | ||
1871 | break; | ||
1872 | } | ||
1873 | set_current_state(TASK_RUNNING); | ||
1874 | |||
1875 | #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT | ||
1876 | printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); | ||
1877 | #endif | ||
1878 | } | ||
1879 | |||
1880 | |||
1881 | /* | ||
1882 | * This routine is called by tty_hangup() when a hangup is signaled. | ||
1883 | */ | ||
1884 | void mxser_hangup(struct tty_struct *tty) | ||
1885 | { | ||
1886 | struct mxser_struct *info = tty->driver_data; | ||
1887 | |||
1888 | mxser_flush_buffer(tty); | ||
1889 | mxser_shutdown(info); | ||
1890 | info->event = 0; | ||
1891 | info->count = 0; | ||
1892 | info->flags &= ~ASYNC_NORMAL_ACTIVE; | ||
1893 | info->tty = NULL; | ||
1894 | wake_up_interruptible(&info->open_wait); | ||
1895 | } | ||
1896 | |||
1897 | |||
1898 | /* added by James 03-12-2004. */ | ||
1899 | /* | ||
1900 | * mxser_rs_break() --- routine which turns the break handling on or off | ||
1901 | */ | ||
1902 | static void mxser_rs_break(struct tty_struct *tty, int break_state) | ||
1903 | { | ||
1904 | struct mxser_struct *info = tty->driver_data; | ||
1905 | unsigned long flags; | ||
1906 | |||
1907 | spin_lock_irqsave(&info->slock, flags); | ||
1908 | if (break_state == -1) | ||
1909 | outb(inb(info->base + UART_LCR) | UART_LCR_SBC, | ||
1910 | info->base + UART_LCR); | ||
1911 | else | ||
1912 | outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC, | ||
1913 | info->base + UART_LCR); | ||
1914 | spin_unlock_irqrestore(&info->slock, flags); | ||
1915 | } | ||
1916 | |||
1917 | /* (above) added by James. */ | ||
1918 | |||
1919 | |||
1920 | /* | ||
1921 | * This is the serial driver's generic interrupt routine | ||
1922 | */ | ||
1923 | static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs) | ||
1924 | { | ||
1925 | int status, iir, i; | ||
1926 | struct mxser_struct *info; | ||
1927 | struct mxser_struct *port; | ||
1928 | int max, irqbits, bits, msr; | ||
1929 | int pass_counter = 0; | ||
1930 | int handled = IRQ_NONE; | ||
1931 | |||
1932 | port = NULL; | ||
1933 | /* spin_lock(&gm_lock); */ | ||
1934 | |||
1935 | for (i = 0; i < MXSER_BOARDS; i++) { | ||
1936 | if (dev_id == &(mxvar_table[i * MXSER_PORTS_PER_BOARD])) { | ||
1937 | port = dev_id; | ||
1938 | break; | ||
1939 | } | ||
1940 | } | ||
1941 | |||
1942 | if (i == MXSER_BOARDS) | ||
1943 | goto irq_stop; | ||
1944 | if (port == 0) | ||
1945 | goto irq_stop; | ||
1946 | max = mxser_numports[mxsercfg[i].board_type - 1]; | ||
1947 | while (1) { | ||
1948 | irqbits = inb(port->vector) & port->vectormask; | ||
1949 | if (irqbits == port->vectormask) | ||
1950 | break; | ||
1951 | |||
1952 | handled = IRQ_HANDLED; | ||
1953 | for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) { | ||
1954 | if (irqbits == port->vectormask) | ||
1955 | break; | ||
1956 | if (bits & irqbits) | ||
1957 | continue; | ||
1958 | info = port + i; | ||
1959 | |||
1960 | /* following add by Victor Yu. 09-13-2002 */ | ||
1961 | iir = inb(info->base + UART_IIR); | ||
1962 | if (iir & UART_IIR_NO_INT) | ||
1963 | continue; | ||
1964 | iir &= MOXA_MUST_IIR_MASK; | ||
1965 | if (!info->tty) { | ||
1966 | status = inb(info->base + UART_LSR); | ||
1967 | outb(0x27, info->base + UART_FCR); | ||
1968 | inb(info->base + UART_MSR); | ||
1969 | continue; | ||
1970 | } | ||
1971 | /* above add by Victor Yu. 09-13-2002 */ | ||
1972 | /* | ||
1973 | if (info->tty->flip.count < TTY_FLIPBUF_SIZE / 4) { | ||
1974 | info->IER |= MOXA_MUST_RECV_ISR; | ||
1975 | outb(info->IER, info->base + UART_IER); | ||
1976 | } | ||
1977 | */ | ||
1978 | |||
1979 | |||
1980 | /* mask by Victor Yu. 09-13-2002 | ||
1981 | if ( !info->tty || | ||
1982 | (inb(info->base + UART_IIR) & UART_IIR_NO_INT) ) | ||
1983 | continue; | ||
1984 | */ | ||
1985 | /* mask by Victor Yu. 09-02-2002 | ||
1986 | status = inb(info->base + UART_LSR) & info->read_status_mask; | ||
1987 | */ | ||
1988 | |||
1989 | /* following add by Victor Yu. 09-02-2002 */ | ||
1990 | status = inb(info->base + UART_LSR); | ||
1991 | |||
1992 | if (status & UART_LSR_PE) | ||
1993 | info->err_shadow |= NPPI_NOTIFY_PARITY; | ||
1994 | if (status & UART_LSR_FE) | ||
1995 | info->err_shadow |= NPPI_NOTIFY_FRAMING; | ||
1996 | if (status & UART_LSR_OE) | ||
1997 | info->err_shadow |= NPPI_NOTIFY_HW_OVERRUN; | ||
1998 | if (status & UART_LSR_BI) | ||
1999 | info->err_shadow |= NPPI_NOTIFY_BREAK; | ||
2000 | |||
2001 | if (info->IsMoxaMustChipFlag) { | ||
2002 | /* | ||
2003 | if ( (status & 0x02) && !(status & 0x01) ) { | ||
2004 | outb(info->base+UART_FCR, 0x23); | ||
2005 | continue; | ||
2006 | } | ||
2007 | */ | ||
2008 | if (iir == MOXA_MUST_IIR_GDA || | ||
2009 | iir == MOXA_MUST_IIR_RDA || | ||
2010 | iir == MOXA_MUST_IIR_RTO || | ||
2011 | iir == MOXA_MUST_IIR_LSR) | ||
2012 | mxser_receive_chars(info, &status); | ||
2013 | |||
2014 | } else { | ||
2015 | /* above add by Victor Yu. 09-02-2002 */ | ||
2016 | |||
2017 | status &= info->read_status_mask; | ||
2018 | if (status & UART_LSR_DR) | ||
2019 | mxser_receive_chars(info, &status); | ||
2020 | } | ||
2021 | msr = inb(info->base + UART_MSR); | ||
2022 | if (msr & UART_MSR_ANY_DELTA) { | ||
2023 | mxser_check_modem_status(info, msr); | ||
2024 | } | ||
2025 | /* following add by Victor Yu. 09-13-2002 */ | ||
2026 | if (info->IsMoxaMustChipFlag) { | ||
2027 | if ((iir == 0x02) && (status & UART_LSR_THRE)) { | ||
2028 | mxser_transmit_chars(info); | ||
2029 | } | ||
2030 | } else { | ||
2031 | /* above add by Victor Yu. 09-13-2002 */ | ||
2032 | |||
2033 | if (status & UART_LSR_THRE) { | ||
2034 | /* 8-2-99 by William | ||
2035 | if ( info->x_char || (info->xmit_cnt > 0) ) | ||
2036 | */ | ||
2037 | mxser_transmit_chars(info); | ||
2038 | } | ||
2039 | } | ||
2040 | } | ||
2041 | if (pass_counter++ > MXSER_ISR_PASS_LIMIT) { | ||
2042 | break; /* Prevent infinite loops */ | ||
2043 | } | ||
2044 | } | ||
2045 | |||
2046 | irq_stop: | ||
2047 | /* spin_unlock(&gm_lock); */ | ||
2048 | return handled; | ||
2049 | } | ||
2050 | |||
2051 | static void mxser_receive_chars(struct mxser_struct *info, int *status) | ||
2052 | { | ||
2053 | struct tty_struct *tty = info->tty; | ||
2054 | unsigned char ch, gdl; | ||
2055 | int ignored = 0; | ||
2056 | int cnt = 0; | ||
2057 | int recv_room; | ||
2058 | int max = 256; | ||
2059 | unsigned long flags; | ||
2060 | |||
2061 | spin_lock_irqsave(&info->slock, flags); | ||
2062 | |||
2063 | recv_room = tty->receive_room; | ||
2064 | if ((recv_room == 0) && (!info->ldisc_stop_rx)) { | ||
2065 | /* mxser_throttle(tty); */ | ||
2066 | mxser_stoprx(tty); | ||
2067 | /* return; */ | ||
2068 | } | ||
2069 | |||
2070 | /* following add by Victor Yu. 09-02-2002 */ | ||
2071 | if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) { | ||
2072 | |||
2073 | if (*status & UART_LSR_SPECIAL) { | ||
2074 | goto intr_old; | ||
2075 | } | ||
2076 | /* following add by Victor Yu. 02-11-2004 */ | ||
2077 | if (info->IsMoxaMustChipFlag == MOXA_MUST_MU860_HWID && | ||
2078 | (*status & MOXA_MUST_LSR_RERR)) | ||
2079 | goto intr_old; | ||
2080 | /* above add by Victor Yu. 02-14-2004 */ | ||
2081 | if (*status & MOXA_MUST_LSR_RERR) | ||
2082 | goto intr_old; | ||
2083 | |||
2084 | gdl = inb(info->base + MOXA_MUST_GDL_REGISTER); | ||
2085 | |||
2086 | /* add by Victor Yu. 02-11-2004 */ | ||
2087 | if (info->IsMoxaMustChipFlag == MOXA_MUST_MU150_HWID) | ||
2088 | gdl &= MOXA_MUST_GDL_MASK; | ||
2089 | if (gdl >= recv_room) { | ||
2090 | if (!info->ldisc_stop_rx) { | ||
2091 | /* mxser_throttle(tty); */ | ||
2092 | mxser_stoprx(tty); | ||
2093 | } | ||
2094 | /* return; */ | ||
2095 | } | ||
2096 | while (gdl--) { | ||
2097 | ch = inb(info->base + UART_RX); | ||
2098 | tty_insert_flip_char(tty, ch, 0); | ||
2099 | cnt++; | ||
2100 | /* | ||
2101 | if ((cnt >= HI_WATER) && (info->stop_rx == 0)) { | ||
2102 | mxser_stoprx(tty); | ||
2103 | info->stop_rx = 1; | ||
2104 | break; | ||
2105 | } */ | ||
2106 | } | ||
2107 | goto end_intr; | ||
2108 | } | ||
2109 | intr_old: | ||
2110 | /* above add by Victor Yu. 09-02-2002 */ | ||
2111 | |||
2112 | do { | ||
2113 | if (max-- < 0) | ||
2114 | break; | ||
2115 | /* | ||
2116 | if ((cnt >= HI_WATER) && (info->stop_rx == 0)) { | ||
2117 | mxser_stoprx(tty); | ||
2118 | info->stop_rx=1; | ||
2119 | break; | ||
2120 | } | ||
2121 | */ | ||
2122 | |||
2123 | ch = inb(info->base + UART_RX); | ||
2124 | /* following add by Victor Yu. 09-02-2002 */ | ||
2125 | if (info->IsMoxaMustChipFlag && (*status & UART_LSR_OE) /*&& !(*status&UART_LSR_DR) */ ) | ||
2126 | outb(0x23, info->base + UART_FCR); | ||
2127 | *status &= info->read_status_mask; | ||
2128 | /* above add by Victor Yu. 09-02-2002 */ | ||
2129 | if (*status & info->ignore_status_mask) { | ||
2130 | if (++ignored > 100) | ||
2131 | break; | ||
2132 | } else { | ||
2133 | char flag = 0; | ||
2134 | if (*status & UART_LSR_SPECIAL) { | ||
2135 | if (*status & UART_LSR_BI) { | ||
2136 | flag = TTY_BREAK; | ||
2137 | /* added by casper 1/11/2000 */ | ||
2138 | info->icount.brk++; | ||
2139 | /* */ | ||
2140 | if (info->flags & ASYNC_SAK) | ||
2141 | do_SAK(tty); | ||
2142 | } else if (*status & UART_LSR_PE) { | ||
2143 | flag = TTY_PARITY; | ||
2144 | /* added by casper 1/11/2000 */ | ||
2145 | info->icount.parity++; | ||
2146 | /* */ | ||
2147 | } else if (*status & UART_LSR_FE) { | ||
2148 | flag = TTY_FRAME; | ||
2149 | /* added by casper 1/11/2000 */ | ||
2150 | info->icount.frame++; | ||
2151 | /* */ | ||
2152 | } else if (*status & UART_LSR_OE) { | ||
2153 | flag = TTY_OVERRUN; | ||
2154 | /* added by casper 1/11/2000 */ | ||
2155 | info->icount.overrun++; | ||
2156 | /* */ | ||
2157 | } | ||
2158 | } | ||
2159 | tty_insert_flip_char(tty, ch, flag); | ||
2160 | cnt++; | ||
2161 | if (cnt >= recv_room) { | ||
2162 | if (!info->ldisc_stop_rx) { | ||
2163 | /* mxser_throttle(tty); */ | ||
2164 | mxser_stoprx(tty); | ||
2165 | } | ||
2166 | break; | ||
2167 | } | ||
2168 | |||
2169 | } | ||
2170 | |||
2171 | /* following add by Victor Yu. 09-02-2002 */ | ||
2172 | if (info->IsMoxaMustChipFlag) | ||
2173 | break; | ||
2174 | /* above add by Victor Yu. 09-02-2002 */ | ||
2175 | |||
2176 | /* mask by Victor Yu. 09-02-2002 | ||
2177 | *status = inb(info->base + UART_LSR) & info->read_status_mask; | ||
2178 | */ | ||
2179 | /* following add by Victor Yu. 09-02-2002 */ | ||
2180 | *status = inb(info->base + UART_LSR); | ||
2181 | /* above add by Victor Yu. 09-02-2002 */ | ||
2182 | } while (*status & UART_LSR_DR); | ||
2183 | |||
2184 | end_intr: /* add by Victor Yu. 09-02-2002 */ | ||
2185 | mxvar_log.rxcnt[info->port] += cnt; | ||
2186 | info->mon_data.rxcnt += cnt; | ||
2187 | info->mon_data.up_rxcnt += cnt; | ||
2188 | spin_unlock_irqrestore(&info->slock, flags); | ||
2189 | |||
2190 | tty_flip_buffer_push(tty); | ||
2191 | } | ||
2192 | |||
2193 | static void mxser_transmit_chars(struct mxser_struct *info) | ||
2194 | { | ||
2195 | int count, cnt; | ||
2196 | unsigned long flags; | ||
2197 | |||
2198 | spin_lock_irqsave(&info->slock, flags); | ||
2199 | |||
2200 | if (info->x_char) { | ||
2201 | outb(info->x_char, info->base + UART_TX); | ||
2202 | info->x_char = 0; | ||
2203 | mxvar_log.txcnt[info->port]++; | ||
2204 | info->mon_data.txcnt++; | ||
2205 | info->mon_data.up_txcnt++; | ||
2206 | |||
2207 | /* added by casper 1/11/2000 */ | ||
2208 | info->icount.tx++; | ||
2209 | /* */ | ||
2210 | spin_unlock_irqrestore(&info->slock, flags); | ||
2211 | return; | ||
2212 | } | ||
2213 | |||
2214 | if (info->xmit_buf == 0) { | ||
2215 | spin_unlock_irqrestore(&info->slock, flags); | ||
2216 | return; | ||
2217 | } | ||
2218 | |||
2219 | if ((info->xmit_cnt <= 0) || info->tty->stopped || | ||
2220 | (info->tty->hw_stopped && | ||
2221 | (info->type != PORT_16550A) && | ||
2222 | (!info->IsMoxaMustChipFlag))) { | ||
2223 | info->IER &= ~UART_IER_THRI; | ||
2224 | outb(info->IER, info->base + UART_IER); | ||
2225 | spin_unlock_irqrestore(&info->slock, flags); | ||
2226 | return; | ||
2227 | } | ||
2228 | |||
2229 | cnt = info->xmit_cnt; | ||
2230 | count = info->xmit_fifo_size; | ||
2231 | do { | ||
2232 | outb(info->xmit_buf[info->xmit_tail++], | ||
2233 | info->base + UART_TX); | ||
2234 | info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE - 1); | ||
2235 | if (--info->xmit_cnt <= 0) | ||
2236 | break; | ||
2237 | } while (--count > 0); | ||
2238 | mxvar_log.txcnt[info->port] += (cnt - info->xmit_cnt); | ||
2239 | |||
2240 | /* added by James 03-12-2004. */ | ||
2241 | info->mon_data.txcnt += (cnt - info->xmit_cnt); | ||
2242 | info->mon_data.up_txcnt += (cnt - info->xmit_cnt); | ||
2243 | /* (above) added by James. */ | ||
2244 | |||
2245 | /* added by casper 1/11/2000 */ | ||
2246 | info->icount.tx += (cnt - info->xmit_cnt); | ||
2247 | /* */ | ||
2248 | |||
2249 | if (info->xmit_cnt < WAKEUP_CHARS) { | ||
2250 | set_bit(MXSER_EVENT_TXLOW, &info->event); | ||
2251 | schedule_work(&info->tqueue); | ||
2252 | } | ||
2253 | if (info->xmit_cnt <= 0) { | ||
2254 | info->IER &= ~UART_IER_THRI; | ||
2255 | outb(info->IER, info->base + UART_IER); | ||
2256 | } | ||
2257 | spin_unlock_irqrestore(&info->slock, flags); | ||
2258 | } | ||
2259 | |||
2260 | static void mxser_check_modem_status(struct mxser_struct *info, int status) | ||
2261 | { | ||
2262 | /* update input line counters */ | ||
2263 | if (status & UART_MSR_TERI) | ||
2264 | info->icount.rng++; | ||
2265 | if (status & UART_MSR_DDSR) | ||
2266 | info->icount.dsr++; | ||
2267 | if (status & UART_MSR_DDCD) | ||
2268 | info->icount.dcd++; | ||
2269 | if (status & UART_MSR_DCTS) | ||
2270 | info->icount.cts++; | ||
2271 | info->mon_data.modem_status = status; | ||
2272 | wake_up_interruptible(&info->delta_msr_wait); | ||
2273 | |||
2274 | if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { | ||
2275 | if (status & UART_MSR_DCD) | ||
2276 | wake_up_interruptible(&info->open_wait); | ||
2277 | schedule_work(&info->tqueue); | ||
2278 | } | ||
2279 | |||
2280 | if (info->flags & ASYNC_CTS_FLOW) { | ||
2281 | if (info->tty->hw_stopped) { | ||
2282 | if (status & UART_MSR_CTS) { | ||
2283 | info->tty->hw_stopped = 0; | ||
2284 | |||
2285 | if ((info->type != PORT_16550A) && | ||
2286 | (!info->IsMoxaMustChipFlag)) { | ||
2287 | info->IER |= UART_IER_THRI; | ||
2288 | outb(info->IER, info->base + UART_IER); | ||
2289 | } | ||
2290 | set_bit(MXSER_EVENT_TXLOW, &info->event); | ||
2291 | schedule_work(&info->tqueue); } | ||
2292 | } else { | ||
2293 | if (!(status & UART_MSR_CTS)) { | ||
2294 | info->tty->hw_stopped = 1; | ||
2295 | if ((info->type != PORT_16550A) && | ||
2296 | (!info->IsMoxaMustChipFlag)) { | ||
2297 | info->IER &= ~UART_IER_THRI; | ||
2298 | outb(info->IER, info->base + UART_IER); | ||
2299 | } | ||
2300 | } | ||
2301 | } | ||
2302 | } | ||
2303 | } | ||
2304 | |||
2305 | static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp, struct mxser_struct *info) | ||
2306 | { | ||
2307 | DECLARE_WAITQUEUE(wait, current); | ||
2308 | int retval; | ||
2309 | int do_clocal = 0; | ||
2310 | unsigned long flags; | ||
2311 | |||
2312 | /* | ||
2313 | * If non-blocking mode is set, or the port is not enabled, | ||
2314 | * then make the check up front and then exit. | ||
2315 | */ | ||
2316 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { | ||
2317 | info->flags |= ASYNC_NORMAL_ACTIVE; | ||
2318 | return 0; | ||
2319 | } | ||
2320 | |||
2321 | if (tty->termios->c_cflag & CLOCAL) | ||
2322 | do_clocal = 1; | ||
2323 | |||
2324 | /* | ||
2325 | * Block waiting for the carrier detect and the line to become | ||
2326 | * free (i.e., not in use by the callout). While we are in | ||
2327 | * this loop, info->count is dropped by one, so that | ||
2328 | * mxser_close() knows when to free things. We restore it upon | ||
2329 | * exit, either normal or abnormal. | ||
2330 | */ | ||
2331 | retval = 0; | ||
2332 | add_wait_queue(&info->open_wait, &wait); | ||
2333 | |||
2334 | spin_lock_irqsave(&info->slock, flags); | ||
2335 | if (!tty_hung_up_p(filp)) | ||
2336 | info->count--; | ||
2337 | spin_unlock_irqrestore(&info->slock, flags); | ||
2338 | info->blocked_open++; | ||
2339 | while (1) { | ||
2340 | spin_lock_irqsave(&info->slock, flags); | ||
2341 | outb(inb(info->base + UART_MCR) | | ||
2342 | UART_MCR_DTR | UART_MCR_RTS, info->base + UART_MCR); | ||
2343 | spin_unlock_irqrestore(&info->slock, flags); | ||
2344 | set_current_state(TASK_INTERRUPTIBLE); | ||
2345 | if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)) { | ||
2346 | if (info->flags & ASYNC_HUP_NOTIFY) | ||
2347 | retval = -EAGAIN; | ||
2348 | else | ||
2349 | retval = -ERESTARTSYS; | ||
2350 | break; | ||
2351 | } | ||
2352 | if (!(info->flags & ASYNC_CLOSING) && | ||
2353 | (do_clocal || | ||
2354 | (inb(info->base + UART_MSR) & UART_MSR_DCD))) | ||
2355 | break; | ||
2356 | if (signal_pending(current)) { | ||
2357 | retval = -ERESTARTSYS; | ||
2358 | break; | ||
2359 | } | ||
2360 | schedule(); | ||
2361 | } | ||
2362 | set_current_state(TASK_RUNNING); | ||
2363 | remove_wait_queue(&info->open_wait, &wait); | ||
2364 | if (!tty_hung_up_p(filp)) | ||
2365 | info->count++; | ||
2366 | info->blocked_open--; | ||
2367 | if (retval) | ||
2368 | return retval; | ||
2369 | info->flags |= ASYNC_NORMAL_ACTIVE; | ||
2370 | return 0; | ||
2371 | } | ||
2372 | |||
2373 | static int mxser_startup(struct mxser_struct *info) | ||
2374 | { | ||
2375 | unsigned long page; | ||
2376 | unsigned long flags; | ||
2377 | |||
2378 | page = __get_free_page(GFP_KERNEL); | ||
2379 | if (!page) | ||
2380 | return -ENOMEM; | ||
2381 | |||
2382 | spin_lock_irqsave(&info->slock, flags); | ||
2383 | |||
2384 | if (info->flags & ASYNC_INITIALIZED) { | ||
2385 | free_page(page); | ||
2386 | spin_unlock_irqrestore(&info->slock, flags); | ||
2387 | return 0; | ||
2388 | } | ||
2389 | |||
2390 | if (!info->base || !info->type) { | ||
2391 | if (info->tty) | ||
2392 | set_bit(TTY_IO_ERROR, &info->tty->flags); | ||
2393 | free_page(page); | ||
2394 | spin_unlock_irqrestore(&info->slock, flags); | ||
2395 | return 0; | ||
2396 | } | ||
2397 | if (info->xmit_buf) | ||
2398 | free_page(page); | ||
2399 | else | ||
2400 | info->xmit_buf = (unsigned char *) page; | ||
2401 | |||
2402 | /* | ||
2403 | * Clear the FIFO buffers and disable them | ||
2404 | * (they will be reenabled in mxser_change_speed()) | ||
2405 | */ | ||
2406 | if (info->IsMoxaMustChipFlag) | ||
2407 | outb((UART_FCR_CLEAR_RCVR | | ||
2408 | UART_FCR_CLEAR_XMIT | | ||
2409 | MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR); | ||
2410 | else | ||
2411 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), | ||
2412 | info->base + UART_FCR); | ||
2413 | |||
2414 | /* | ||
2415 | * At this point there's no way the LSR could still be 0xFF; | ||
2416 | * if it is, then bail out, because there's likely no UART | ||
2417 | * here. | ||
2418 | */ | ||
2419 | if (inb(info->base + UART_LSR) == 0xff) { | ||
2420 | spin_unlock_irqrestore(&info->slock, flags); | ||
2421 | if (capable(CAP_SYS_ADMIN)) { | ||
2422 | if (info->tty) | ||
2423 | set_bit(TTY_IO_ERROR, &info->tty->flags); | ||
2424 | return 0; | ||
2425 | } else | ||
2426 | return -ENODEV; | ||
2427 | } | ||
2428 | |||
2429 | /* | ||
2430 | * Clear the interrupt registers. | ||
2431 | */ | ||
2432 | (void) inb(info->base + UART_LSR); | ||
2433 | (void) inb(info->base + UART_RX); | ||
2434 | (void) inb(info->base + UART_IIR); | ||
2435 | (void) inb(info->base + UART_MSR); | ||
2436 | |||
2437 | /* | ||
2438 | * Now, initialize the UART | ||
2439 | */ | ||
2440 | outb(UART_LCR_WLEN8, info->base + UART_LCR); /* reset DLAB */ | ||
2441 | info->MCR = UART_MCR_DTR | UART_MCR_RTS; | ||
2442 | outb(info->MCR, info->base + UART_MCR); | ||
2443 | |||
2444 | /* | ||
2445 | * Finally, enable interrupts | ||
2446 | */ | ||
2447 | info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; | ||
2448 | /* info->IER = UART_IER_RLSI | UART_IER_RDI; */ | ||
2449 | |||
2450 | /* following add by Victor Yu. 08-30-2002 */ | ||
2451 | if (info->IsMoxaMustChipFlag) | ||
2452 | info->IER |= MOXA_MUST_IER_EGDAI; | ||
2453 | /* above add by Victor Yu. 08-30-2002 */ | ||
2454 | outb(info->IER, info->base + UART_IER); /* enable interrupts */ | ||
2455 | |||
2456 | /* | ||
2457 | * And clear the interrupt registers again for luck. | ||
2458 | */ | ||
2459 | (void) inb(info->base + UART_LSR); | ||
2460 | (void) inb(info->base + UART_RX); | ||
2461 | (void) inb(info->base + UART_IIR); | ||
2462 | (void) inb(info->base + UART_MSR); | ||
2463 | |||
2464 | if (info->tty) | ||
2465 | clear_bit(TTY_IO_ERROR, &info->tty->flags); | ||
2466 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | ||
2467 | |||
2468 | /* | ||
2469 | * and set the speed of the serial port | ||
2470 | */ | ||
2471 | spin_unlock_irqrestore(&info->slock, flags); | ||
2472 | mxser_change_speed(info, NULL); | ||
2473 | |||
2474 | info->flags |= ASYNC_INITIALIZED; | ||
2475 | return 0; | ||
2476 | } | ||
2477 | |||
2478 | /* | ||
2479 | * This routine will shutdown a serial port; interrupts maybe disabled, and | ||
2480 | * DTR is dropped if the hangup on close termio flag is on. | ||
2481 | */ | ||
2482 | static void mxser_shutdown(struct mxser_struct *info) | ||
2483 | { | ||
2484 | unsigned long flags; | ||
2485 | |||
2486 | if (!(info->flags & ASYNC_INITIALIZED)) | ||
2487 | return; | ||
2488 | |||
2489 | spin_lock_irqsave(&info->slock, flags); | ||
2490 | |||
2491 | /* | ||
2492 | * clear delta_msr_wait queue to avoid mem leaks: we may free the irq | ||
2493 | * here so the queue might never be waken up | ||
2494 | */ | ||
2495 | wake_up_interruptible(&info->delta_msr_wait); | ||
2496 | |||
2497 | /* | ||
2498 | * Free the IRQ, if necessary | ||
2499 | */ | ||
2500 | if (info->xmit_buf) { | ||
2501 | free_page((unsigned long) info->xmit_buf); | ||
2502 | info->xmit_buf = NULL; | ||
2503 | } | ||
2504 | |||
2505 | info->IER = 0; | ||
2506 | outb(0x00, info->base + UART_IER); | ||
2507 | |||
2508 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) | ||
2509 | info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS); | ||
2510 | outb(info->MCR, info->base + UART_MCR); | ||
2511 | |||
2512 | /* clear Rx/Tx FIFO's */ | ||
2513 | /* following add by Victor Yu. 08-30-2002 */ | ||
2514 | if (info->IsMoxaMustChipFlag) | ||
2515 | outb((UART_FCR_CLEAR_RCVR | | ||
2516 | UART_FCR_CLEAR_XMIT | | ||
2517 | MOXA_MUST_FCR_GDA_MODE_ENABLE), info->base + UART_FCR); | ||
2518 | else | ||
2519 | /* above add by Victor Yu. 08-30-2002 */ | ||
2520 | outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), | ||
2521 | info->base + UART_FCR); | ||
2522 | |||
2523 | /* read data port to reset things */ | ||
2524 | (void) inb(info->base + UART_RX); | ||
2525 | |||
2526 | if (info->tty) | ||
2527 | set_bit(TTY_IO_ERROR, &info->tty->flags); | ||
2528 | |||
2529 | info->flags &= ~ASYNC_INITIALIZED; | ||
2530 | |||
2531 | /* following add by Victor Yu. 09-23-2002 */ | ||
2532 | if (info->IsMoxaMustChipFlag) | ||
2533 | SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->base); | ||
2534 | /* above add by Victor Yu. 09-23-2002 */ | ||
2535 | |||
2536 | spin_unlock_irqrestore(&info->slock, flags); | ||
2537 | } | ||
2538 | |||
2539 | /* | ||
2540 | * This routine is called to set the UART divisor registers to match | ||
2541 | * the specified baud rate for a serial port. | ||
2542 | */ | ||
2543 | static int mxser_change_speed(struct mxser_struct *info, struct termios *old_termios) | ||
2544 | { | ||
2545 | unsigned cflag, cval, fcr; | ||
2546 | int ret = 0; | ||
2547 | unsigned char status; | ||
2548 | long baud; | ||
2549 | unsigned long flags; | ||
2550 | |||
2551 | if (!info->tty || !info->tty->termios) | ||
2552 | return ret; | ||
2553 | cflag = info->tty->termios->c_cflag; | ||
2554 | if (!(info->base)) | ||
2555 | return ret; | ||
2556 | |||
2557 | #ifndef B921600 | ||
2558 | #define B921600 (B460800 +1) | ||
2559 | #endif | ||
2560 | if (mxser_set_baud_method[info->port] == 0) { | ||
2561 | baud = tty_get_baud_rate(info->tty); | ||
2562 | mxser_set_baud(info, baud); | ||
2563 | } | ||
2564 | |||
2565 | /* byte size and parity */ | ||
2566 | switch (cflag & CSIZE) { | ||
2567 | case CS5: | ||
2568 | cval = 0x00; | ||
2569 | break; | ||
2570 | case CS6: | ||
2571 | cval = 0x01; | ||
2572 | break; | ||
2573 | case CS7: | ||
2574 | cval = 0x02; | ||
2575 | break; | ||
2576 | case CS8: | ||
2577 | cval = 0x03; | ||
2578 | break; | ||
2579 | default: | ||
2580 | cval = 0x00; | ||
2581 | break; /* too keep GCC shut... */ | ||
2582 | } | ||
2583 | if (cflag & CSTOPB) | ||
2584 | cval |= 0x04; | ||
2585 | if (cflag & PARENB) | ||
2586 | cval |= UART_LCR_PARITY; | ||
2587 | if (!(cflag & PARODD)) | ||
2588 | cval |= UART_LCR_EPAR; | ||
2589 | if (cflag & CMSPAR) | ||
2590 | cval |= UART_LCR_SPAR; | ||
2591 | |||
2592 | if ((info->type == PORT_8250) || (info->type == PORT_16450)) { | ||
2593 | if (info->IsMoxaMustChipFlag) { | ||
2594 | fcr = UART_FCR_ENABLE_FIFO; | ||
2595 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; | ||
2596 | SET_MOXA_MUST_FIFO_VALUE(info); | ||
2597 | } else | ||
2598 | fcr = 0; | ||
2599 | } else { | ||
2600 | fcr = UART_FCR_ENABLE_FIFO; | ||
2601 | /* following add by Victor Yu. 08-30-2002 */ | ||
2602 | if (info->IsMoxaMustChipFlag) { | ||
2603 | fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; | ||
2604 | SET_MOXA_MUST_FIFO_VALUE(info); | ||
2605 | } else { | ||
2606 | /* above add by Victor Yu. 08-30-2002 */ | ||
2607 | switch (info->rx_trigger) { | ||
2608 | case 1: | ||
2609 | fcr |= UART_FCR_TRIGGER_1; | ||
2610 | break; | ||
2611 | case 4: | ||
2612 | fcr |= UART_FCR_TRIGGER_4; | ||
2613 | break; | ||
2614 | case 8: | ||
2615 | fcr |= UART_FCR_TRIGGER_8; | ||
2616 | break; | ||
2617 | default: | ||
2618 | fcr |= UART_FCR_TRIGGER_14; | ||
2619 | break; | ||
2620 | } | ||
2621 | } | ||
2622 | } | ||
2623 | |||
2624 | /* CTS flow control flag and modem status interrupts */ | ||
2625 | info->IER &= ~UART_IER_MSI; | ||
2626 | info->MCR &= ~UART_MCR_AFE; | ||
2627 | if (cflag & CRTSCTS) { | ||
2628 | info->flags |= ASYNC_CTS_FLOW; | ||
2629 | info->IER |= UART_IER_MSI; | ||
2630 | if ((info->type == PORT_16550A) || (info->IsMoxaMustChipFlag)) { | ||
2631 | info->MCR |= UART_MCR_AFE; | ||
2632 | /* status = mxser_get_msr(info->base, 0, info->port); */ | ||
2633 | /* | ||
2634 | save_flags(flags); | ||
2635 | cli(); | ||
2636 | status = inb(baseaddr + UART_MSR); | ||
2637 | restore_flags(flags); | ||
2638 | */ | ||
2639 | /* mxser_check_modem_status(info, status); */ | ||
2640 | } else { | ||
2641 | /* status = mxser_get_msr(info->base, 0, info->port); */ | ||
2642 | /* MX_LOCK(&info->slock); */ | ||
2643 | status = inb(info->base + UART_MSR); | ||
2644 | /* MX_UNLOCK(&info->slock); */ | ||
2645 | if (info->tty->hw_stopped) { | ||
2646 | if (status & UART_MSR_CTS) { | ||
2647 | info->tty->hw_stopped = 0; | ||
2648 | if ((info->type != PORT_16550A) && | ||
2649 | (!info->IsMoxaMustChipFlag)) { | ||
2650 | info->IER |= UART_IER_THRI; | ||
2651 | outb(info->IER, info->base + UART_IER); | ||
2652 | } | ||
2653 | set_bit(MXSER_EVENT_TXLOW, &info->event); | ||
2654 | schedule_work(&info->tqueue); } | ||
2655 | } else { | ||
2656 | if (!(status & UART_MSR_CTS)) { | ||
2657 | info->tty->hw_stopped = 1; | ||
2658 | if ((info->type != PORT_16550A) && | ||
2659 | (!info->IsMoxaMustChipFlag)) { | ||
2660 | info->IER &= ~UART_IER_THRI; | ||
2661 | outb(info->IER, info->base + UART_IER); | ||
2662 | } | ||
2663 | } | ||
2664 | } | ||
2665 | } | ||
2666 | } else { | ||
2667 | info->flags &= ~ASYNC_CTS_FLOW; | ||
2668 | } | ||
2669 | outb(info->MCR, info->base + UART_MCR); | ||
2670 | if (cflag & CLOCAL) { | ||
2671 | info->flags &= ~ASYNC_CHECK_CD; | ||
2672 | } else { | ||
2673 | info->flags |= ASYNC_CHECK_CD; | ||
2674 | info->IER |= UART_IER_MSI; | ||
2675 | } | ||
2676 | outb(info->IER, info->base + UART_IER); | ||
2677 | |||
2678 | /* | ||
2679 | * Set up parity check flag | ||
2680 | */ | ||
2681 | info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; | ||
2682 | if (I_INPCK(info->tty)) | ||
2683 | info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; | ||
2684 | if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) | ||
2685 | info->read_status_mask |= UART_LSR_BI; | ||
2686 | |||
2687 | info->ignore_status_mask = 0; | ||
2688 | |||
2689 | if (I_IGNBRK(info->tty)) { | ||
2690 | info->ignore_status_mask |= UART_LSR_BI; | ||
2691 | info->read_status_mask |= UART_LSR_BI; | ||
2692 | /* | ||
2693 | * If we're ignore parity and break indicators, ignore | ||
2694 | * overruns too. (For real raw support). | ||
2695 | */ | ||
2696 | if (I_IGNPAR(info->tty)) { | ||
2697 | info->ignore_status_mask |= | ||
2698 | UART_LSR_OE | | ||
2699 | UART_LSR_PE | | ||
2700 | UART_LSR_FE; | ||
2701 | info->read_status_mask |= | ||
2702 | UART_LSR_OE | | ||
2703 | UART_LSR_PE | | ||
2704 | UART_LSR_FE; | ||
2705 | } | ||
2706 | } | ||
2707 | /* following add by Victor Yu. 09-02-2002 */ | ||
2708 | if (info->IsMoxaMustChipFlag) { | ||
2709 | spin_lock_irqsave(&info->slock, flags); | ||
2710 | SET_MOXA_MUST_XON1_VALUE(info->base, START_CHAR(info->tty)); | ||
2711 | SET_MOXA_MUST_XOFF1_VALUE(info->base, STOP_CHAR(info->tty)); | ||
2712 | if (I_IXON(info->tty)) { | ||
2713 | ENABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | ||
2714 | } else { | ||
2715 | DISABLE_MOXA_MUST_RX_SOFTWARE_FLOW_CONTROL(info->base); | ||
2716 | } | ||
2717 | if (I_IXOFF(info->tty)) { | ||
2718 | ENABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base); | ||
2719 | } else { | ||
2720 | DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->base); | ||
2721 | } | ||
2722 | /* | ||
2723 | if ( I_IXANY(info->tty) ) { | ||
2724 | info->MCR |= MOXA_MUST_MCR_XON_ANY; | ||
2725 | ENABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base); | ||
2726 | } else { | ||
2727 | info->MCR &= ~MOXA_MUST_MCR_XON_ANY; | ||
2728 | DISABLE_MOXA_MUST_XON_ANY_FLOW_CONTROL(info->base); | ||
2729 | } | ||
2730 | */ | ||
2731 | spin_unlock_irqrestore(&info->slock, flags); | ||
2732 | } | ||
2733 | /* above add by Victor Yu. 09-02-2002 */ | ||
2734 | |||
2735 | |||
2736 | outb(fcr, info->base + UART_FCR); /* set fcr */ | ||
2737 | outb(cval, info->base + UART_LCR); | ||
2738 | |||
2739 | return ret; | ||
2740 | } | ||
2741 | |||
2742 | |||
2743 | static int mxser_set_baud(struct mxser_struct *info, long newspd) | ||
2744 | { | ||
2745 | int quot = 0; | ||
2746 | unsigned char cval; | ||
2747 | int ret = 0; | ||
2748 | unsigned long flags; | ||
2749 | |||
2750 | if (!info->tty || !info->tty->termios) | ||
2751 | return ret; | ||
2752 | |||
2753 | if (!(info->base)) | ||
2754 | return ret; | ||
2755 | |||
2756 | if (newspd > info->MaxCanSetBaudRate) | ||
2757 | return 0; | ||
2758 | |||
2759 | info->realbaud = newspd; | ||
2760 | if (newspd == 134) { | ||
2761 | quot = (2 * info->baud_base / 269); | ||
2762 | } else if (newspd) { | ||
2763 | quot = info->baud_base / newspd; | ||
2764 | if (quot == 0) | ||
2765 | quot = 1; | ||
2766 | } else { | ||
2767 | quot = 0; | ||
2768 | } | ||
2769 | |||
2770 | info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base); | ||
2771 | info->timeout += HZ / 50; /* Add .02 seconds of slop */ | ||
2772 | |||
2773 | if (quot) { | ||
2774 | spin_lock_irqsave(&info->slock, flags); | ||
2775 | info->MCR |= UART_MCR_DTR; | ||
2776 | outb(info->MCR, info->base + UART_MCR); | ||
2777 | spin_unlock_irqrestore(&info->slock, flags); | ||
2778 | } else { | ||
2779 | spin_lock_irqsave(&info->slock, flags); | ||
2780 | info->MCR &= ~UART_MCR_DTR; | ||
2781 | outb(info->MCR, info->base + UART_MCR); | ||
2782 | spin_unlock_irqrestore(&info->slock, flags); | ||
2783 | return ret; | ||
2784 | } | ||
2785 | |||
2786 | cval = inb(info->base + UART_LCR); | ||
2787 | |||
2788 | outb(cval | UART_LCR_DLAB, info->base + UART_LCR); /* set DLAB */ | ||
2789 | |||
2790 | outb(quot & 0xff, info->base + UART_DLL); /* LS of divisor */ | ||
2791 | outb(quot >> 8, info->base + UART_DLM); /* MS of divisor */ | ||
2792 | outb(cval, info->base + UART_LCR); /* reset DLAB */ | ||
2793 | |||
2794 | |||
2795 | return ret; | ||
2796 | } | ||
2797 | |||
2798 | /* | ||
2799 | * ------------------------------------------------------------ | ||
2800 | * friends of mxser_ioctl() | ||
2801 | * ------------------------------------------------------------ | ||
2802 | */ | ||
2803 | static int mxser_get_serial_info(struct mxser_struct *info, struct serial_struct __user *retinfo) | ||
2804 | { | ||
2805 | struct serial_struct tmp; | ||
2806 | |||
2807 | if (!retinfo) | ||
2808 | return -EFAULT; | ||
2809 | memset(&tmp, 0, sizeof(tmp)); | ||
2810 | tmp.type = info->type; | ||
2811 | tmp.line = info->port; | ||
2812 | tmp.port = info->base; | ||
2813 | tmp.irq = info->irq; | ||
2814 | tmp.flags = info->flags; | ||
2815 | tmp.baud_base = info->baud_base; | ||
2816 | tmp.close_delay = info->close_delay; | ||
2817 | tmp.closing_wait = info->closing_wait; | ||
2818 | tmp.custom_divisor = info->custom_divisor; | ||
2819 | tmp.hub6 = 0; | ||
2820 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | ||
2821 | return -EFAULT; | ||
2822 | return 0; | ||
2823 | } | ||
2824 | |||
2825 | static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct __user *new_info) | ||
2826 | { | ||
2827 | struct serial_struct new_serial; | ||
2828 | unsigned int flags; | ||
2829 | int retval = 0; | ||
2830 | |||
2831 | if (!new_info || !info->base) | ||
2832 | return -EFAULT; | ||
2833 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | ||
2834 | return -EFAULT; | ||
2835 | |||
2836 | if ((new_serial.irq != info->irq) || | ||
2837 | (new_serial.port != info->base) || | ||
2838 | (new_serial.custom_divisor != info->custom_divisor) || | ||
2839 | (new_serial.baud_base != info->baud_base)) | ||
2840 | return -EPERM; | ||
2841 | |||
2842 | flags = info->flags & ASYNC_SPD_MASK; | ||
2843 | |||
2844 | if (!capable(CAP_SYS_ADMIN)) { | ||
2845 | if ((new_serial.baud_base != info->baud_base) || | ||
2846 | (new_serial.close_delay != info->close_delay) || | ||
2847 | ((new_serial.flags & ~ASYNC_USR_MASK) != (info->flags & ~ASYNC_USR_MASK))) | ||
2848 | return -EPERM; | ||
2849 | info->flags = ((info->flags & ~ASYNC_USR_MASK) | | ||
2850 | (new_serial.flags & ASYNC_USR_MASK)); | ||
2851 | } else { | ||
2852 | /* | ||
2853 | * OK, past this point, all the error checking has been done. | ||
2854 | * At this point, we start making changes..... | ||
2855 | */ | ||
2856 | info->flags = ((info->flags & ~ASYNC_FLAGS) | | ||
2857 | (new_serial.flags & ASYNC_FLAGS)); | ||
2858 | info->close_delay = new_serial.close_delay * HZ / 100; | ||
2859 | info->closing_wait = new_serial.closing_wait * HZ / 100; | ||
2860 | info->tty->low_latency = | ||
2861 | (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; | ||
2862 | info->tty->low_latency = 0; /* (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; */ | ||
2863 | } | ||
2864 | |||
2865 | /* added by casper, 3/17/2000, for mouse */ | ||
2866 | info->type = new_serial.type; | ||
2867 | |||
2868 | process_txrx_fifo(info); | ||
2869 | |||
2870 | if (info->flags & ASYNC_INITIALIZED) { | ||
2871 | if (flags != (info->flags & ASYNC_SPD_MASK)) { | ||
2872 | mxser_change_speed(info, NULL); | ||
2873 | } | ||
2874 | } else { | ||
2875 | retval = mxser_startup(info); | ||
2876 | } | ||
2877 | return retval; | ||
2878 | } | ||
2879 | |||
2880 | /* | ||
2881 | * mxser_get_lsr_info - get line status register info | ||
2882 | * | ||
2883 | * Purpose: Let user call ioctl() to get info when the UART physically | ||
2884 | * is emptied. On bus types like RS485, the transmitter must | ||
2885 | * release the bus after transmitting. This must be done when | ||
2886 | * the transmit shift register is empty, not be done when the | ||
2887 | * transmit holding register is empty. This functionality | ||
2888 | * allows an RS485 driver to be written in user space. | ||
2889 | */ | ||
2890 | static int mxser_get_lsr_info(struct mxser_struct *info, unsigned int __user *value) | ||
2891 | { | ||
2892 | unsigned char status; | ||
2893 | unsigned int result; | ||
2894 | unsigned long flags; | ||
2895 | |||
2896 | spin_lock_irqsave(&info->slock, flags); | ||
2897 | status = inb(info->base + UART_LSR); | ||
2898 | spin_unlock_irqrestore(&info->slock, flags); | ||
2899 | result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); | ||
2900 | return put_user(result, value); | ||
2901 | } | ||
2902 | |||
2903 | /* | ||
2904 | * This routine sends a break character out the serial port. | ||
2905 | */ | ||
2906 | static void mxser_send_break(struct mxser_struct *info, int duration) | ||
2907 | { | ||
2908 | unsigned long flags; | ||
2909 | |||
2910 | if (!info->base) | ||
2911 | return; | ||
2912 | set_current_state(TASK_INTERRUPTIBLE); | ||
2913 | spin_lock_irqsave(&info->slock, flags); | ||
2914 | outb(inb(info->base + UART_LCR) | UART_LCR_SBC, | ||
2915 | info->base + UART_LCR); | ||
2916 | spin_unlock_irqrestore(&info->slock, flags); | ||
2917 | schedule_timeout(duration); | ||
2918 | spin_lock_irqsave(&info->slock, flags); | ||
2919 | outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC, | ||
2920 | info->base + UART_LCR); | ||
2921 | spin_unlock_irqrestore(&info->slock, flags); | ||
2922 | } | ||
2923 | |||
2924 | static int mxser_tiocmget(struct tty_struct *tty, struct file *file) | ||
2925 | { | ||
2926 | struct mxser_struct *info = tty->driver_data; | ||
2927 | unsigned char control, status; | ||
2928 | unsigned long flags; | ||
2929 | |||
2930 | |||
2931 | if (tty->index == MXSER_PORTS) | ||
2932 | return -ENOIOCTLCMD; | ||
2933 | if (tty->flags & (1 << TTY_IO_ERROR)) | ||
2934 | return -EIO; | ||
2935 | |||
2936 | control = info->MCR; | ||
2937 | |||
2938 | spin_lock_irqsave(&info->slock, flags); | ||
2939 | status = inb(info->base + UART_MSR); | ||
2940 | if (status & UART_MSR_ANY_DELTA) | ||
2941 | mxser_check_modem_status(info, status); | ||
2942 | spin_unlock_irqrestore(&info->slock, flags); | ||
2943 | return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) | | ||
2944 | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) | | ||
2945 | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) | | ||
2946 | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) | | ||
2947 | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) | | ||
2948 | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); | ||
2949 | } | ||
2950 | |||
2951 | static int mxser_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) | ||
2952 | { | ||
2953 | struct mxser_struct *info = tty->driver_data; | ||
2954 | unsigned long flags; | ||
2955 | |||
2956 | |||
2957 | if (tty->index == MXSER_PORTS) | ||
2958 | return -ENOIOCTLCMD; | ||
2959 | if (tty->flags & (1 << TTY_IO_ERROR)) | ||
2960 | return -EIO; | ||
2961 | |||
2962 | spin_lock_irqsave(&info->slock, flags); | ||
2963 | |||
2964 | if (set & TIOCM_RTS) | ||
2965 | info->MCR |= UART_MCR_RTS; | ||
2966 | if (set & TIOCM_DTR) | ||
2967 | info->MCR |= UART_MCR_DTR; | ||
2968 | |||
2969 | if (clear & TIOCM_RTS) | ||
2970 | info->MCR &= ~UART_MCR_RTS; | ||
2971 | if (clear & TIOCM_DTR) | ||
2972 | info->MCR &= ~UART_MCR_DTR; | ||
2973 | |||
2974 | outb(info->MCR, info->base + UART_MCR); | ||
2975 | spin_unlock_irqrestore(&info->slock, flags); | ||
2976 | return 0; | ||
2977 | } | ||
2978 | |||
2979 | |||
2980 | static int mxser_read_register(int, unsigned short *); | ||
2981 | static int mxser_program_mode(int); | ||
2982 | static void mxser_normal_mode(int); | ||
2983 | |||
2984 | static int mxser_get_ISA_conf(int cap, struct mxser_hwconf *hwconf) | ||
2985 | { | ||
2986 | int id, i, bits; | ||
2987 | unsigned short regs[16], irq; | ||
2988 | unsigned char scratch, scratch2; | ||
2989 | |||
2990 | hwconf->IsMoxaMustChipFlag = MOXA_OTHER_UART; | ||
2991 | |||
2992 | id = mxser_read_register(cap, regs); | ||
2993 | if (id == C168_ASIC_ID) { | ||
2994 | hwconf->board_type = MXSER_BOARD_C168_ISA; | ||
2995 | hwconf->ports = 8; | ||
2996 | } else if (id == C104_ASIC_ID) { | ||
2997 | hwconf->board_type = MXSER_BOARD_C104_ISA; | ||
2998 | hwconf->ports = 4; | ||
2999 | } else if (id == C102_ASIC_ID) { | ||
3000 | hwconf->board_type = MXSER_BOARD_C102_ISA; | ||
3001 | hwconf->ports = 2; | ||
3002 | } else if (id == CI132_ASIC_ID) { | ||
3003 | hwconf->board_type = MXSER_BOARD_CI132; | ||
3004 | hwconf->ports = 2; | ||
3005 | } else if (id == CI134_ASIC_ID) { | ||
3006 | hwconf->board_type = MXSER_BOARD_CI134; | ||
3007 | hwconf->ports = 4; | ||
3008 | } else if (id == CI104J_ASIC_ID) { | ||
3009 | hwconf->board_type = MXSER_BOARD_CI104J; | ||
3010 | hwconf->ports = 4; | ||
3011 | } else | ||
3012 | return 0; | ||
3013 | |||
3014 | irq = 0; | ||
3015 | if (hwconf->ports == 2) { | ||
3016 | irq = regs[9] & 0xF000; | ||
3017 | irq = irq | (irq >> 4); | ||
3018 | if (irq != (regs[9] & 0xFF00)) | ||
3019 | return MXSER_ERR_IRQ_CONFLIT; | ||
3020 | } else if (hwconf->ports == 4) { | ||
3021 | irq = regs[9] & 0xF000; | ||
3022 | irq = irq | (irq >> 4); | ||
3023 | irq = irq | (irq >> 8); | ||
3024 | if (irq != regs[9]) | ||
3025 | return MXSER_ERR_IRQ_CONFLIT; | ||
3026 | } else if (hwconf->ports == 8) { | ||
3027 | irq = regs[9] & 0xF000; | ||
3028 | irq = irq | (irq >> 4); | ||
3029 | irq = irq | (irq >> 8); | ||
3030 | if ((irq != regs[9]) || (irq != regs[10])) | ||
3031 | return MXSER_ERR_IRQ_CONFLIT; | ||
3032 | } | ||
3033 | |||
3034 | if (!irq) | ||
3035 | return MXSER_ERR_IRQ; | ||
3036 | hwconf->irq = ((int)(irq & 0xF000) >> 12); | ||
3037 | for (i = 0; i < 8; i++) | ||
3038 | hwconf->ioaddr[i] = (int) regs[i + 1] & 0xFFF8; | ||
3039 | if ((regs[12] & 0x80) == 0) | ||
3040 | return MXSER_ERR_VECTOR; | ||
3041 | hwconf->vector = (int)regs[11]; /* interrupt vector */ | ||
3042 | if (id == 1) | ||
3043 | hwconf->vector_mask = 0x00FF; | ||
3044 | else | ||
3045 | hwconf->vector_mask = 0x000F; | ||
3046 | for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { | ||
3047 | if (regs[12] & bits) { | ||
3048 | hwconf->baud_base[i] = 921600; | ||
3049 | hwconf->MaxCanSetBaudRate[i] = 921600; /* add by Victor Yu. 09-04-2002 */ | ||
3050 | } else { | ||
3051 | hwconf->baud_base[i] = 115200; | ||
3052 | hwconf->MaxCanSetBaudRate[i] = 115200; /* add by Victor Yu. 09-04-2002 */ | ||
3053 | } | ||
3054 | } | ||
3055 | scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); | ||
3056 | outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR); | ||
3057 | outb(0, cap + UART_EFR); /* EFR is the same as FCR */ | ||
3058 | outb(scratch2, cap + UART_LCR); | ||
3059 | outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR); | ||
3060 | scratch = inb(cap + UART_IIR); | ||
3061 | |||
3062 | if (scratch & 0xC0) | ||
3063 | hwconf->uart_type = PORT_16550A; | ||
3064 | else | ||
3065 | hwconf->uart_type = PORT_16450; | ||
3066 | if (id == 1) | ||
3067 | hwconf->ports = 8; | ||
3068 | else | ||
3069 | hwconf->ports = 4; | ||
3070 | request_region(hwconf->ioaddr[0], 8 * hwconf->ports, "mxser(IO)"); | ||
3071 | request_region(hwconf->vector, 1, "mxser(vector)"); | ||
3072 | return hwconf->ports; | ||
3073 | } | ||
3074 | |||
3075 | #define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ | ||
3076 | #define CHIP_DO 0x02 /* Serial Data Output in Eprom */ | ||
3077 | #define CHIP_CS 0x04 /* Serial Chip Select in Eprom */ | ||
3078 | #define CHIP_DI 0x08 /* Serial Data Input in Eprom */ | ||
3079 | #define EN_CCMD 0x000 /* Chip's command register */ | ||
3080 | #define EN0_RSARLO 0x008 /* Remote start address reg 0 */ | ||
3081 | #define EN0_RSARHI 0x009 /* Remote start address reg 1 */ | ||
3082 | #define EN0_RCNTLO 0x00A /* Remote byte count reg WR */ | ||
3083 | #define EN0_RCNTHI 0x00B /* Remote byte count reg WR */ | ||
3084 | #define EN0_DCFG 0x00E /* Data configuration reg WR */ | ||
3085 | #define EN0_PORT 0x010 /* Rcv missed frame error counter RD */ | ||
3086 | #define ENC_PAGE0 0x000 /* Select page 0 of chip registers */ | ||
3087 | #define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */ | ||
3088 | static int mxser_read_register(int port, unsigned short *regs) | ||
3089 | { | ||
3090 | int i, k, value, id; | ||
3091 | unsigned int j; | ||
3092 | |||
3093 | id = mxser_program_mode(port); | ||
3094 | if (id < 0) | ||
3095 | return id; | ||
3096 | for (i = 0; i < 14; i++) { | ||
3097 | k = (i & 0x3F) | 0x180; | ||
3098 | for (j = 0x100; j > 0; j >>= 1) { | ||
3099 | outb(CHIP_CS, port); | ||
3100 | if (k & j) { | ||
3101 | outb(CHIP_CS | CHIP_DO, port); | ||
3102 | outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ | ||
3103 | } else { | ||
3104 | outb(CHIP_CS, port); | ||
3105 | outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ | ||
3106 | } | ||
3107 | } | ||
3108 | (void)inb(port); | ||
3109 | value = 0; | ||
3110 | for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { | ||
3111 | outb(CHIP_CS, port); | ||
3112 | outb(CHIP_CS | CHIP_SK, port); | ||
3113 | if (inb(port) & CHIP_DI) | ||
3114 | value |= j; | ||
3115 | } | ||
3116 | regs[i] = value; | ||
3117 | outb(0, port); | ||
3118 | } | ||
3119 | mxser_normal_mode(port); | ||
3120 | return id; | ||
3121 | } | ||
3122 | |||
3123 | static int mxser_program_mode(int port) | ||
3124 | { | ||
3125 | int id, i, j, n; | ||
3126 | /* unsigned long flags; */ | ||
3127 | |||
3128 | spin_lock(&gm_lock); | ||
3129 | outb(0, port); | ||
3130 | outb(0, port); | ||
3131 | outb(0, port); | ||
3132 | (void)inb(port); | ||
3133 | (void)inb(port); | ||
3134 | outb(0, port); | ||
3135 | (void)inb(port); | ||
3136 | /* restore_flags(flags); */ | ||
3137 | spin_unlock(&gm_lock); | ||
3138 | |||
3139 | id = inb(port + 1) & 0x1F; | ||
3140 | if ((id != C168_ASIC_ID) && | ||
3141 | (id != C104_ASIC_ID) && | ||
3142 | (id != C102_ASIC_ID) && | ||
3143 | (id != CI132_ASIC_ID) && | ||
3144 | (id != CI134_ASIC_ID) && | ||
3145 | (id != CI104J_ASIC_ID)) | ||
3146 | return -1; | ||
3147 | for (i = 0, j = 0; i < 4; i++) { | ||
3148 | n = inb(port + 2); | ||
3149 | if (n == 'M') { | ||
3150 | j = 1; | ||
3151 | } else if ((j == 1) && (n == 1)) { | ||
3152 | j = 2; | ||
3153 | break; | ||
3154 | } else | ||
3155 | j = 0; | ||
3156 | } | ||
3157 | if (j != 2) | ||
3158 | id = -2; | ||
3159 | return id; | ||
3160 | } | ||
3161 | |||
3162 | static void mxser_normal_mode(int port) | ||
3163 | { | ||
3164 | int i, n; | ||
3165 | |||
3166 | outb(0xA5, port + 1); | ||
3167 | outb(0x80, port + 3); | ||
3168 | outb(12, port + 0); /* 9600 bps */ | ||
3169 | outb(0, port + 1); | ||
3170 | outb(0x03, port + 3); /* 8 data bits */ | ||
3171 | outb(0x13, port + 4); /* loop back mode */ | ||
3172 | for (i = 0; i < 16; i++) { | ||
3173 | n = inb(port + 5); | ||
3174 | if ((n & 0x61) == 0x60) | ||
3175 | break; | ||
3176 | if ((n & 1) == 1) | ||
3177 | (void)inb(port); | ||
3178 | } | ||
3179 | outb(0x00, port + 4); | ||
3180 | } | ||
3181 | |||
3182 | module_init(mxser_module_init); | ||
3183 | module_exit(mxser_module_exit); | ||