| 1 |
1275 |
phoenix |
/*****************************************************************************/
|
| 2 |
|
|
/*
|
| 3 |
|
|
* mxser.c -- MOXA Smartio family multiport serial driver.
|
| 4 |
|
|
*
|
| 5 |
|
|
* Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
|
| 6 |
|
|
*
|
| 7 |
|
|
* This code is loosely based on the Linux serial driver, written by
|
| 8 |
|
|
* Linus Torvalds, Theodore T'so and others.
|
| 9 |
|
|
*
|
| 10 |
|
|
* This program is free software; you can redistribute it and/or modify
|
| 11 |
|
|
* it under the terms of the GNU General Public License as published by
|
| 12 |
|
|
* the Free Software Foundation; either version 2 of the License, or
|
| 13 |
|
|
* (at your option) any later version.
|
| 14 |
|
|
*
|
| 15 |
|
|
* This program is distributed in the hope that it will be useful,
|
| 16 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 17 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 18 |
|
|
* GNU General Public License for more details.
|
| 19 |
|
|
*
|
| 20 |
|
|
* You should have received a copy of the GNU General Public License
|
| 21 |
|
|
* along with this program; if not, write to the Free Software
|
| 22 |
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
| 23 |
|
|
*/
|
| 24 |
|
|
|
| 25 |
|
|
/*
|
| 26 |
|
|
* MOXA Smartio Family Serial Driver
|
| 27 |
|
|
*
|
| 28 |
|
|
* Copyright (C) 1999,2000 Moxa Technologies Co., LTD.
|
| 29 |
|
|
*
|
| 30 |
|
|
* for : LINUX 2.0.X, 2.2.X, 2.4.X
|
| 31 |
|
|
* date : 2001/05/01
|
| 32 |
|
|
* version : 1.2
|
| 33 |
|
|
*
|
| 34 |
|
|
* Fixes for C104H/PCI by Tim Hockin <thockin@sun.com>
|
| 35 |
|
|
* Added support for: C102, CI-132, CI-134, CP-132, CP-114, CT-114 cards
|
| 36 |
|
|
* by Damian Wrobel <dwrobel@ertel.com.pl>
|
| 37 |
|
|
*
|
| 38 |
|
|
*/
|
| 39 |
|
|
|
| 40 |
|
|
#include <linux/config.h>
|
| 41 |
|
|
#include <linux/module.h>
|
| 42 |
|
|
#include <linux/version.h>
|
| 43 |
|
|
#include <linux/errno.h>
|
| 44 |
|
|
#include <linux/signal.h>
|
| 45 |
|
|
#include <linux/sched.h>
|
| 46 |
|
|
#include <linux/timer.h>
|
| 47 |
|
|
#include <linux/interrupt.h>
|
| 48 |
|
|
#include <linux/tty.h>
|
| 49 |
|
|
#include <linux/tty_flip.h>
|
| 50 |
|
|
#include <linux/serial.h>
|
| 51 |
|
|
#include <linux/serial_reg.h>
|
| 52 |
|
|
#include <linux/major.h>
|
| 53 |
|
|
#include <linux/string.h>
|
| 54 |
|
|
#include <linux/fcntl.h>
|
| 55 |
|
|
#include <linux/ptrace.h>
|
| 56 |
|
|
#include <linux/ioport.h>
|
| 57 |
|
|
#include <linux/mm.h>
|
| 58 |
|
|
#include <linux/smp_lock.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/segment.h>
|
| 65 |
|
|
#include <asm/bitops.h>
|
| 66 |
|
|
#include <asm/uaccess.h>
|
| 67 |
|
|
|
| 68 |
|
|
#define MXSER_VERSION "1.2.1"
|
| 69 |
|
|
|
| 70 |
|
|
#define MXSERMAJOR 174
|
| 71 |
|
|
#define MXSERCUMAJOR 175
|
| 72 |
|
|
|
| 73 |
|
|
|
| 74 |
|
|
#define MXSER_EVENT_TXLOW 1
|
| 75 |
|
|
#define MXSER_EVENT_HANGUP 2
|
| 76 |
|
|
|
| 77 |
|
|
|
| 78 |
|
|
#define SERIAL_DO_RESTART
|
| 79 |
|
|
|
| 80 |
|
|
#define MXSER_BOARDS 4 /* Max. boards */
|
| 81 |
|
|
#define MXSER_PORTS 32 /* Max. ports */
|
| 82 |
|
|
#define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */
|
| 83 |
|
|
#define MXSER_ISR_PASS_LIMIT 256
|
| 84 |
|
|
|
| 85 |
|
|
#define MXSER_ERR_IOADDR -1
|
| 86 |
|
|
#define MXSER_ERR_IRQ -2
|
| 87 |
|
|
#define MXSER_ERR_IRQ_CONFLIT -3
|
| 88 |
|
|
#define MXSER_ERR_VECTOR -4
|
| 89 |
|
|
|
| 90 |
|
|
#define SERIAL_TYPE_NORMAL 1
|
| 91 |
|
|
#define SERIAL_TYPE_CALLOUT 2
|
| 92 |
|
|
|
| 93 |
|
|
#define WAKEUP_CHARS 256
|
| 94 |
|
|
|
| 95 |
|
|
#define UART_MCR_AFE 0x20
|
| 96 |
|
|
#define UART_LSR_SPECIAL 0x1E
|
| 97 |
|
|
|
| 98 |
|
|
#define PORTNO(x) (MINOR((x)->device) - (x)->driver.minor_start)
|
| 99 |
|
|
|
| 100 |
|
|
#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
|
| 101 |
|
|
|
| 102 |
|
|
#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? SA_SHIRQ : SA_INTERRUPT)
|
| 103 |
|
|
|
| 104 |
|
|
#ifndef MIN
|
| 105 |
|
|
#define MIN(a,b) ((a) < (b) ? (a) : (b))
|
| 106 |
|
|
#endif
|
| 107 |
|
|
|
| 108 |
|
|
/*
|
| 109 |
|
|
* Define the Moxa PCI vendor and device IDs.
|
| 110 |
|
|
*/
|
| 111 |
|
|
|
| 112 |
|
|
#ifndef PCI_VENDOR_ID_MOXA
|
| 113 |
|
|
#define PCI_VENDOR_ID_MOXA 0x1393
|
| 114 |
|
|
#endif
|
| 115 |
|
|
#ifndef PCI_DEVICE_ID_C168
|
| 116 |
|
|
#define PCI_DEVICE_ID_C168 0x1680
|
| 117 |
|
|
#endif
|
| 118 |
|
|
#ifndef PCI_DEVICE_ID_C104
|
| 119 |
|
|
#define PCI_DEVICE_ID_C104 0x1040
|
| 120 |
|
|
#endif
|
| 121 |
|
|
#ifndef PCI_DEVICE_ID_CP132
|
| 122 |
|
|
#define PCI_DEVICE_ID_CP132 0x1320
|
| 123 |
|
|
#endif
|
| 124 |
|
|
#ifndef PCI_DEVICE_ID_CP114
|
| 125 |
|
|
#define PCI_DEVICE_ID_CP114 0x1141
|
| 126 |
|
|
#endif
|
| 127 |
|
|
#ifndef PCI_DEVICE_ID_CT114
|
| 128 |
|
|
#define PCI_DEVICE_ID_CT114 0x1140
|
| 129 |
|
|
#endif
|
| 130 |
|
|
|
| 131 |
|
|
#define C168_ASIC_ID 1
|
| 132 |
|
|
#define C104_ASIC_ID 2
|
| 133 |
|
|
#define CI134_ASIC_ID 3
|
| 134 |
|
|
#define CI132_ASIC_ID 4
|
| 135 |
|
|
#define CI104J_ASIC_ID 5
|
| 136 |
|
|
#define C102_ASIC_ID 0xB
|
| 137 |
|
|
|
| 138 |
|
|
enum {
|
| 139 |
|
|
MXSER_BOARD_C168_ISA = 0,
|
| 140 |
|
|
MXSER_BOARD_C104_ISA,
|
| 141 |
|
|
MXSER_BOARD_CI104J,
|
| 142 |
|
|
MXSER_BOARD_C168_PCI,
|
| 143 |
|
|
MXSER_BOARD_C104_PCI,
|
| 144 |
|
|
MXSER_BOARD_C102_ISA,
|
| 145 |
|
|
MXSER_BOARD_CI132,
|
| 146 |
|
|
MXSER_BOARD_CI134,
|
| 147 |
|
|
MXSER_BOARD_CP132_PCI,
|
| 148 |
|
|
MXSER_BOARD_CP114_PCI,
|
| 149 |
|
|
MXSER_BOARD_CT114_PCI
|
| 150 |
|
|
};
|
| 151 |
|
|
|
| 152 |
|
|
static char *mxser_brdname[] =
|
| 153 |
|
|
{
|
| 154 |
|
|
"C168 series",
|
| 155 |
|
|
"C104 series",
|
| 156 |
|
|
"CI-104J series",
|
| 157 |
|
|
"C168H/PCI series",
|
| 158 |
|
|
"C104H/PCI series",
|
| 159 |
|
|
"C102 series",
|
| 160 |
|
|
"CI-132 series",
|
| 161 |
|
|
"CI-134 series",
|
| 162 |
|
|
"CP-132 series",
|
| 163 |
|
|
"CP-114 series",
|
| 164 |
|
|
"CT-114 series"
|
| 165 |
|
|
};
|
| 166 |
|
|
|
| 167 |
|
|
static int mxser_numports[] =
|
| 168 |
|
|
{
|
| 169 |
|
|
8,
|
| 170 |
|
|
4,
|
| 171 |
|
|
4,
|
| 172 |
|
|
8,
|
| 173 |
|
|
4,
|
| 174 |
|
|
2,
|
| 175 |
|
|
2,
|
| 176 |
|
|
4,
|
| 177 |
|
|
2,
|
| 178 |
|
|
4,
|
| 179 |
|
|
4
|
| 180 |
|
|
};
|
| 181 |
|
|
|
| 182 |
|
|
/*
|
| 183 |
|
|
* MOXA ioctls
|
| 184 |
|
|
*/
|
| 185 |
|
|
#define MOXA 0x400
|
| 186 |
|
|
#define MOXA_GETDATACOUNT (MOXA + 23)
|
| 187 |
|
|
#define MOXA_GET_CONF (MOXA + 35)
|
| 188 |
|
|
#define MOXA_DIAGNOSE (MOXA + 50)
|
| 189 |
|
|
#define MOXA_CHKPORTENABLE (MOXA + 60)
|
| 190 |
|
|
#define MOXA_HighSpeedOn (MOXA + 61)
|
| 191 |
|
|
#define MOXA_GET_MAJOR (MOXA + 63)
|
| 192 |
|
|
#define MOXA_GET_CUMAJOR (MOXA + 64)
|
| 193 |
|
|
#define MOXA_GETMSTATUS (MOXA + 65)
|
| 194 |
|
|
|
| 195 |
|
|
static struct pci_device_id mxser_pcibrds[] = {
|
| 196 |
|
|
{ PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C168, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
|
| 197 |
|
|
MXSER_BOARD_C168_PCI },
|
| 198 |
|
|
{ PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C104, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
|
| 199 |
|
|
MXSER_BOARD_C104_PCI },
|
| 200 |
|
|
{ PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP132, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
|
| 201 |
|
|
MXSER_BOARD_CP132_PCI },
|
| 202 |
|
|
{ PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP114, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
|
| 203 |
|
|
MXSER_BOARD_CP114_PCI },
|
| 204 |
|
|
{ PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CT114, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
|
| 205 |
|
|
MXSER_BOARD_CT114_PCI },
|
| 206 |
|
|
{ 0 }
|
| 207 |
|
|
};
|
| 208 |
|
|
MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
|
| 209 |
|
|
|
| 210 |
|
|
static int ioaddr[MXSER_BOARDS];
|
| 211 |
|
|
static int ttymajor = MXSERMAJOR;
|
| 212 |
|
|
static int calloutmajor = MXSERCUMAJOR;
|
| 213 |
|
|
static int verbose;
|
| 214 |
|
|
|
| 215 |
|
|
/* Variables for insmod */
|
| 216 |
|
|
|
| 217 |
|
|
MODULE_AUTHOR("William Chen");
|
| 218 |
|
|
MODULE_DESCRIPTION("MOXA Smartio Family Multiport Board Device Driver");
|
| 219 |
|
|
MODULE_LICENSE("GPL");
|
| 220 |
|
|
MODULE_PARM(ioaddr, "1-4i");
|
| 221 |
|
|
MODULE_PARM(ttymajor, "i");
|
| 222 |
|
|
MODULE_PARM(calloutmajor, "i");
|
| 223 |
|
|
MODULE_PARM(verbose, "i");
|
| 224 |
|
|
|
| 225 |
|
|
EXPORT_NO_SYMBOLS;
|
| 226 |
|
|
|
| 227 |
|
|
struct mxser_hwconf {
|
| 228 |
|
|
int board_type;
|
| 229 |
|
|
int ports;
|
| 230 |
|
|
int irq;
|
| 231 |
|
|
int vector;
|
| 232 |
|
|
int vector_mask;
|
| 233 |
|
|
int uart_type;
|
| 234 |
|
|
int ioaddr[MXSER_PORTS_PER_BOARD];
|
| 235 |
|
|
int baud_base[MXSER_PORTS_PER_BOARD];
|
| 236 |
|
|
struct pci_dev *pdev;
|
| 237 |
|
|
};
|
| 238 |
|
|
|
| 239 |
|
|
struct mxser_struct {
|
| 240 |
|
|
int port;
|
| 241 |
|
|
int base; /* port base address */
|
| 242 |
|
|
int irq; /* port using irq no. */
|
| 243 |
|
|
int vector; /* port irq vector */
|
| 244 |
|
|
int vectormask; /* port vector mask */
|
| 245 |
|
|
int rx_trigger; /* Rx fifo trigger level */
|
| 246 |
|
|
int baud_base; /* max. speed */
|
| 247 |
|
|
int flags; /* defined in tty.h */
|
| 248 |
|
|
int type; /* UART type */
|
| 249 |
|
|
struct tty_struct *tty;
|
| 250 |
|
|
int read_status_mask;
|
| 251 |
|
|
int ignore_status_mask;
|
| 252 |
|
|
int xmit_fifo_size;
|
| 253 |
|
|
int custom_divisor;
|
| 254 |
|
|
int x_char; /* xon/xoff character */
|
| 255 |
|
|
int close_delay;
|
| 256 |
|
|
unsigned short closing_wait;
|
| 257 |
|
|
int IER; /* Interrupt Enable Register */
|
| 258 |
|
|
int MCR; /* Modem control register */
|
| 259 |
|
|
unsigned long event;
|
| 260 |
|
|
int count; /* # of fd on device */
|
| 261 |
|
|
int blocked_open; /* # of blocked opens */
|
| 262 |
|
|
long session; /* Session of opening process */
|
| 263 |
|
|
long pgrp; /* pgrp of opening process */
|
| 264 |
|
|
unsigned char *xmit_buf;
|
| 265 |
|
|
int xmit_head;
|
| 266 |
|
|
int xmit_tail;
|
| 267 |
|
|
int xmit_cnt;
|
| 268 |
|
|
struct tq_struct tqueue;
|
| 269 |
|
|
struct termios normal_termios;
|
| 270 |
|
|
struct termios callout_termios;
|
| 271 |
|
|
wait_queue_head_t open_wait;
|
| 272 |
|
|
wait_queue_head_t close_wait;
|
| 273 |
|
|
wait_queue_head_t delta_msr_wait;
|
| 274 |
|
|
struct async_icount icount; /* kernel counters for the 4 input interrupts */
|
| 275 |
|
|
};
|
| 276 |
|
|
|
| 277 |
|
|
struct mxser_log {
|
| 278 |
|
|
int tick;
|
| 279 |
|
|
int rxcnt[MXSER_PORTS];
|
| 280 |
|
|
int txcnt[MXSER_PORTS];
|
| 281 |
|
|
};
|
| 282 |
|
|
|
| 283 |
|
|
struct mxser_mstatus {
|
| 284 |
|
|
tcflag_t cflag;
|
| 285 |
|
|
int cts;
|
| 286 |
|
|
int dsr;
|
| 287 |
|
|
int ri;
|
| 288 |
|
|
int dcd;
|
| 289 |
|
|
};
|
| 290 |
|
|
|
| 291 |
|
|
static struct mxser_mstatus GMStatus[MXSER_PORTS];
|
| 292 |
|
|
|
| 293 |
|
|
static int mxserBoardCAP[MXSER_BOARDS] =
|
| 294 |
|
|
{
|
| 295 |
|
|
0, 0, 0, 0
|
| 296 |
|
|
/* 0x180, 0x280, 0x200, 0x320 */
|
| 297 |
|
|
};
|
| 298 |
|
|
|
| 299 |
|
|
|
| 300 |
|
|
static struct tty_driver mxvar_sdriver, mxvar_cdriver;
|
| 301 |
|
|
static int mxvar_refcount;
|
| 302 |
|
|
static struct mxser_struct mxvar_table[MXSER_PORTS];
|
| 303 |
|
|
static struct tty_struct *mxvar_tty[MXSER_PORTS + 1];
|
| 304 |
|
|
static struct termios *mxvar_termios[MXSER_PORTS + 1];
|
| 305 |
|
|
static struct termios *mxvar_termios_locked[MXSER_PORTS + 1];
|
| 306 |
|
|
static struct mxser_log mxvar_log;
|
| 307 |
|
|
static int mxvar_diagflag;
|
| 308 |
|
|
/*
|
| 309 |
|
|
* mxvar_tmp_buf is used as a temporary buffer by serial_write. We need
|
| 310 |
|
|
* to lock it in case the memcpy_fromfs blocks while swapping in a page,
|
| 311 |
|
|
* and some other program tries to do a serial write at the same time.
|
| 312 |
|
|
* Since the lock will only come under contention when the system is
|
| 313 |
|
|
* swapping and available memory is low, it makes sense to share one
|
| 314 |
|
|
* buffer across all the serial ports, since it significantly saves
|
| 315 |
|
|
* memory if large numbers of serial ports are open.
|
| 316 |
|
|
*/
|
| 317 |
|
|
static unsigned char *mxvar_tmp_buf;
|
| 318 |
|
|
static struct semaphore mxvar_tmp_buf_sem;
|
| 319 |
|
|
|
| 320 |
|
|
/*
|
| 321 |
|
|
* This is used to figure out the divisor speeds and the timeouts
|
| 322 |
|
|
*/
|
| 323 |
|
|
static int mxvar_baud_table[] =
|
| 324 |
|
|
{
|
| 325 |
|
|
0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
|
| 326 |
|
|
9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600, 0};
|
| 327 |
|
|
|
| 328 |
|
|
struct mxser_hwconf mxsercfg[MXSER_BOARDS];
|
| 329 |
|
|
|
| 330 |
|
|
/*
|
| 331 |
|
|
* static functions:
|
| 332 |
|
|
*/
|
| 333 |
|
|
|
| 334 |
|
|
#ifdef MODULE
|
| 335 |
|
|
int init_module(void);
|
| 336 |
|
|
void cleanup_module(void);
|
| 337 |
|
|
#endif
|
| 338 |
|
|
|
| 339 |
|
|
static void mxser_getcfg(int board, struct mxser_hwconf *hwconf);
|
| 340 |
|
|
int mxser_init(void);
|
| 341 |
|
|
static int mxser_get_ISA_conf(int, struct mxser_hwconf *);
|
| 342 |
|
|
static int mxser_get_PCI_conf(struct pci_dev *, int, struct mxser_hwconf *);
|
| 343 |
|
|
static void mxser_do_softint(void *);
|
| 344 |
|
|
static int mxser_open(struct tty_struct *, struct file *);
|
| 345 |
|
|
static void mxser_close(struct tty_struct *, struct file *);
|
| 346 |
|
|
static int mxser_write(struct tty_struct *, int, const unsigned char *, int);
|
| 347 |
|
|
static int mxser_write_room(struct tty_struct *);
|
| 348 |
|
|
static void mxser_flush_buffer(struct tty_struct *);
|
| 349 |
|
|
static int mxser_chars_in_buffer(struct tty_struct *);
|
| 350 |
|
|
static void mxser_flush_chars(struct tty_struct *);
|
| 351 |
|
|
static void mxser_put_char(struct tty_struct *, unsigned char);
|
| 352 |
|
|
static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong);
|
| 353 |
|
|
static int mxser_ioctl_special(unsigned int, unsigned long);
|
| 354 |
|
|
static void mxser_throttle(struct tty_struct *);
|
| 355 |
|
|
static void mxser_unthrottle(struct tty_struct *);
|
| 356 |
|
|
static void mxser_set_termios(struct tty_struct *, struct termios *);
|
| 357 |
|
|
static void mxser_stop(struct tty_struct *);
|
| 358 |
|
|
static void mxser_start(struct tty_struct *);
|
| 359 |
|
|
static void mxser_hangup(struct tty_struct *);
|
| 360 |
|
|
static void mxser_interrupt(int, void *, struct pt_regs *);
|
| 361 |
|
|
static inline void mxser_receive_chars(struct mxser_struct *, int *);
|
| 362 |
|
|
static inline void mxser_transmit_chars(struct mxser_struct *);
|
| 363 |
|
|
static inline void mxser_check_modem_status(struct mxser_struct *, int);
|
| 364 |
|
|
static int mxser_block_til_ready(struct tty_struct *, struct file *, struct mxser_struct *);
|
| 365 |
|
|
static int mxser_startup(struct mxser_struct *);
|
| 366 |
|
|
static void mxser_shutdown(struct mxser_struct *);
|
| 367 |
|
|
static int mxser_change_speed(struct mxser_struct *, struct termios *old_termios);
|
| 368 |
|
|
static int mxser_get_serial_info(struct mxser_struct *, struct serial_struct *);
|
| 369 |
|
|
static int mxser_set_serial_info(struct mxser_struct *, struct serial_struct *);
|
| 370 |
|
|
static int mxser_get_lsr_info(struct mxser_struct *, unsigned int *);
|
| 371 |
|
|
static void mxser_send_break(struct mxser_struct *, int);
|
| 372 |
|
|
static int mxser_get_modem_info(struct mxser_struct *, unsigned int *);
|
| 373 |
|
|
static int mxser_set_modem_info(struct mxser_struct *, unsigned int, unsigned int *);
|
| 374 |
|
|
|
| 375 |
|
|
/*
|
| 376 |
|
|
* The MOXA C168/C104 serial driver boot-time initialization code!
|
| 377 |
|
|
*/
|
| 378 |
|
|
|
| 379 |
|
|
|
| 380 |
|
|
#ifdef MODULE
|
| 381 |
|
|
int init_module(void)
|
| 382 |
|
|
{
|
| 383 |
|
|
int ret;
|
| 384 |
|
|
|
| 385 |
|
|
if (verbose)
|
| 386 |
|
|
printk("Loading module mxser ...\n");
|
| 387 |
|
|
ret = mxser_init();
|
| 388 |
|
|
if (verbose)
|
| 389 |
|
|
printk("Done.\n");
|
| 390 |
|
|
return (ret);
|
| 391 |
|
|
}
|
| 392 |
|
|
|
| 393 |
|
|
void cleanup_module(void)
|
| 394 |
|
|
{
|
| 395 |
|
|
int i, err = 0;
|
| 396 |
|
|
|
| 397 |
|
|
|
| 398 |
|
|
if (verbose)
|
| 399 |
|
|
printk("Unloading module mxser ...\n");
|
| 400 |
|
|
if ((err |= tty_unregister_driver(&mxvar_cdriver)))
|
| 401 |
|
|
printk("Couldn't unregister MOXA Smartio family callout driver\n");
|
| 402 |
|
|
if ((err |= tty_unregister_driver(&mxvar_sdriver)))
|
| 403 |
|
|
printk("Couldn't unregister MOXA Smartio family serial driver\n");
|
| 404 |
|
|
|
| 405 |
|
|
for (i = 0; i < MXSER_BOARDS; i++) {
|
| 406 |
|
|
if (mxsercfg[i].board_type == -1)
|
| 407 |
|
|
continue;
|
| 408 |
|
|
else {
|
| 409 |
|
|
free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]);
|
| 410 |
|
|
}
|
| 411 |
|
|
}
|
| 412 |
|
|
|
| 413 |
|
|
if (verbose)
|
| 414 |
|
|
printk("Done.\n");
|
| 415 |
|
|
|
| 416 |
|
|
}
|
| 417 |
|
|
#endif
|
| 418 |
|
|
|
| 419 |
|
|
|
| 420 |
|
|
int mxser_initbrd(int board, struct mxser_hwconf *hwconf)
|
| 421 |
|
|
{
|
| 422 |
|
|
struct mxser_struct *info;
|
| 423 |
|
|
unsigned long flags;
|
| 424 |
|
|
int retval;
|
| 425 |
|
|
int i, n;
|
| 426 |
|
|
|
| 427 |
|
|
init_MUTEX(&mxvar_tmp_buf_sem);
|
| 428 |
|
|
|
| 429 |
|
|
n = board * MXSER_PORTS_PER_BOARD;
|
| 430 |
|
|
info = &mxvar_table[n];
|
| 431 |
|
|
for (i = 0; i < hwconf->ports; i++, n++, info++) {
|
| 432 |
|
|
if (verbose) {
|
| 433 |
|
|
printk(" ttyM%d/cum%d at 0x%04x ", n, n, hwconf->ioaddr[i]);
|
| 434 |
|
|
if (hwconf->baud_base[i] == 115200)
|
| 435 |
|
|
printk(" max. baud rate up to 115200 bps.\n");
|
| 436 |
|
|
else
|
| 437 |
|
|
printk(" max. baud rate up to 921600 bps.\n");
|
| 438 |
|
|
}
|
| 439 |
|
|
info->port = n;
|
| 440 |
|
|
info->base = hwconf->ioaddr[i];
|
| 441 |
|
|
info->irq = hwconf->irq;
|
| 442 |
|
|
info->vector = hwconf->vector;
|
| 443 |
|
|
info->vectormask = hwconf->vector_mask;
|
| 444 |
|
|
info->rx_trigger = 14;
|
| 445 |
|
|
info->baud_base = hwconf->baud_base[i];
|
| 446 |
|
|
info->flags = ASYNC_SHARE_IRQ;
|
| 447 |
|
|
info->type = hwconf->uart_type;
|
| 448 |
|
|
if ((info->type == PORT_16450) || (info->type == PORT_8250))
|
| 449 |
|
|
info->xmit_fifo_size = 1;
|
| 450 |
|
|
else
|
| 451 |
|
|
info->xmit_fifo_size = 16;
|
| 452 |
|
|
info->custom_divisor = hwconf->baud_base[i] * 16;
|
| 453 |
|
|
info->close_delay = 5 * HZ / 10;
|
| 454 |
|
|
info->closing_wait = 30 * HZ;
|
| 455 |
|
|
info->tqueue.routine = mxser_do_softint;
|
| 456 |
|
|
info->tqueue.data = info;
|
| 457 |
|
|
info->callout_termios = mxvar_cdriver.init_termios;
|
| 458 |
|
|
info->normal_termios = mxvar_sdriver.init_termios;
|
| 459 |
|
|
init_waitqueue_head(&info->open_wait);
|
| 460 |
|
|
init_waitqueue_head(&info->close_wait);
|
| 461 |
|
|
init_waitqueue_head(&info->delta_msr_wait);
|
| 462 |
|
|
}
|
| 463 |
|
|
|
| 464 |
|
|
/*
|
| 465 |
|
|
* Allocate the IRQ if necessary
|
| 466 |
|
|
*/
|
| 467 |
|
|
save_flags(flags);
|
| 468 |
|
|
|
| 469 |
|
|
n = board * MXSER_PORTS_PER_BOARD;
|
| 470 |
|
|
info = &mxvar_table[n];
|
| 471 |
|
|
|
| 472 |
|
|
cli();
|
| 473 |
|
|
retval = request_irq(hwconf->irq, mxser_interrupt, IRQ_T(info),
|
| 474 |
|
|
"mxser", info);
|
| 475 |
|
|
if (retval) {
|
| 476 |
|
|
restore_flags(flags);
|
| 477 |
|
|
printk("Board %d: %s", board, mxser_brdname[hwconf->board_type]);
|
| 478 |
|
|
printk(" Request irq fail,IRQ (%d) may be conflit with another device.\n", info->irq);
|
| 479 |
|
|
return (retval);
|
| 480 |
|
|
}
|
| 481 |
|
|
restore_flags(flags);
|
| 482 |
|
|
|
| 483 |
|
|
return 0;
|
| 484 |
|
|
}
|
| 485 |
|
|
|
| 486 |
|
|
|
| 487 |
|
|
static void mxser_getcfg(int board, struct mxser_hwconf *hwconf)
|
| 488 |
|
|
{
|
| 489 |
|
|
mxsercfg[board] = *hwconf;
|
| 490 |
|
|
}
|
| 491 |
|
|
|
| 492 |
|
|
static int mxser_get_PCI_conf(struct pci_dev *pdev, int board_type, struct mxser_hwconf *hwconf)
|
| 493 |
|
|
{
|
| 494 |
|
|
int i;
|
| 495 |
|
|
unsigned int ioaddress;
|
| 496 |
|
|
|
| 497 |
|
|
hwconf->board_type = board_type;
|
| 498 |
|
|
hwconf->ports = mxser_numports[board_type];
|
| 499 |
|
|
ioaddress = pci_resource_start (pdev, 2);
|
| 500 |
|
|
for (i = 0; i < hwconf->ports; i++)
|
| 501 |
|
|
hwconf->ioaddr[i] = ioaddress + 8 * i;
|
| 502 |
|
|
|
| 503 |
|
|
ioaddress = pci_resource_start (pdev, 3);
|
| 504 |
|
|
hwconf->vector = ioaddress;
|
| 505 |
|
|
|
| 506 |
|
|
hwconf->irq = pdev->irq;
|
| 507 |
|
|
|
| 508 |
|
|
hwconf->uart_type = PORT_16550A;
|
| 509 |
|
|
hwconf->vector_mask = 0;
|
| 510 |
|
|
for (i = 0; i < hwconf->ports; i++) {
|
| 511 |
|
|
hwconf->vector_mask |= (1 << i);
|
| 512 |
|
|
hwconf->baud_base[i] = 921600;
|
| 513 |
|
|
}
|
| 514 |
|
|
return (0);
|
| 515 |
|
|
}
|
| 516 |
|
|
|
| 517 |
|
|
int mxser_init(void)
|
| 518 |
|
|
{
|
| 519 |
|
|
int i, m, retval, b;
|
| 520 |
|
|
int n, index;
|
| 521 |
|
|
int ret1, ret2;
|
| 522 |
|
|
struct mxser_hwconf hwconf;
|
| 523 |
|
|
|
| 524 |
|
|
printk("MOXA Smartio family driver version %s\n", MXSER_VERSION);
|
| 525 |
|
|
|
| 526 |
|
|
/* Initialize the tty_driver structure */
|
| 527 |
|
|
|
| 528 |
|
|
memset(&mxvar_sdriver, 0, sizeof(struct tty_driver));
|
| 529 |
|
|
mxvar_sdriver.magic = TTY_DRIVER_MAGIC;
|
| 530 |
|
|
mxvar_sdriver.name = "ttyM";
|
| 531 |
|
|
mxvar_sdriver.major = ttymajor;
|
| 532 |
|
|
mxvar_sdriver.minor_start = 0;
|
| 533 |
|
|
mxvar_sdriver.num = MXSER_PORTS + 1;
|
| 534 |
|
|
mxvar_sdriver.type = TTY_DRIVER_TYPE_SERIAL;
|
| 535 |
|
|
mxvar_sdriver.subtype = SERIAL_TYPE_NORMAL;
|
| 536 |
|
|
mxvar_sdriver.init_termios = tty_std_termios;
|
| 537 |
|
|
mxvar_sdriver.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
|
| 538 |
|
|
mxvar_sdriver.flags = TTY_DRIVER_REAL_RAW;
|
| 539 |
|
|
mxvar_sdriver.refcount = &mxvar_refcount;
|
| 540 |
|
|
mxvar_sdriver.table = mxvar_tty;
|
| 541 |
|
|
mxvar_sdriver.termios = mxvar_termios;
|
| 542 |
|
|
mxvar_sdriver.termios_locked = mxvar_termios_locked;
|
| 543 |
|
|
|
| 544 |
|
|
mxvar_sdriver.open = mxser_open;
|
| 545 |
|
|
mxvar_sdriver.close = mxser_close;
|
| 546 |
|
|
mxvar_sdriver.write = mxser_write;
|
| 547 |
|
|
mxvar_sdriver.put_char = mxser_put_char;
|
| 548 |
|
|
mxvar_sdriver.flush_chars = mxser_flush_chars;
|
| 549 |
|
|
mxvar_sdriver.write_room = mxser_write_room;
|
| 550 |
|
|
mxvar_sdriver.chars_in_buffer = mxser_chars_in_buffer;
|
| 551 |
|
|
mxvar_sdriver.flush_buffer = mxser_flush_buffer;
|
| 552 |
|
|
mxvar_sdriver.ioctl = mxser_ioctl;
|
| 553 |
|
|
mxvar_sdriver.throttle = mxser_throttle;
|
| 554 |
|
|
mxvar_sdriver.unthrottle = mxser_unthrottle;
|
| 555 |
|
|
mxvar_sdriver.set_termios = mxser_set_termios;
|
| 556 |
|
|
mxvar_sdriver.stop = mxser_stop;
|
| 557 |
|
|
mxvar_sdriver.start = mxser_start;
|
| 558 |
|
|
mxvar_sdriver.hangup = mxser_hangup;
|
| 559 |
|
|
|
| 560 |
|
|
/*
|
| 561 |
|
|
* The callout device is just like normal device except for
|
| 562 |
|
|
* major number and the subtype code.
|
| 563 |
|
|
*/
|
| 564 |
|
|
mxvar_cdriver = mxvar_sdriver;
|
| 565 |
|
|
mxvar_cdriver.name = "cum";
|
| 566 |
|
|
mxvar_cdriver.major = calloutmajor;
|
| 567 |
|
|
mxvar_cdriver.subtype = SERIAL_TYPE_CALLOUT;
|
| 568 |
|
|
|
| 569 |
|
|
printk("Tty devices major number = %d, callout devices major number = %d\n", ttymajor, calloutmajor);
|
| 570 |
|
|
|
| 571 |
|
|
mxvar_diagflag = 0;
|
| 572 |
|
|
memset(mxvar_table, 0, MXSER_PORTS * sizeof(struct mxser_struct));
|
| 573 |
|
|
memset(&mxvar_log, 0, sizeof(struct mxser_log));
|
| 574 |
|
|
|
| 575 |
|
|
|
| 576 |
|
|
m = 0;
|
| 577 |
|
|
/* Start finding ISA boards here */
|
| 578 |
|
|
for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
|
| 579 |
|
|
int cap;
|
| 580 |
|
|
if (!(cap = mxserBoardCAP[b]))
|
| 581 |
|
|
continue;
|
| 582 |
|
|
|
| 583 |
|
|
retval = mxser_get_ISA_conf(cap, &hwconf);
|
| 584 |
|
|
|
| 585 |
|
|
if (retval != 0)
|
| 586 |
|
|
printk("Found MOXA %s board (CAP=0x%x)\n",
|
| 587 |
|
|
mxser_brdname[hwconf.board_type],
|
| 588 |
|
|
ioaddr[b]);
|
| 589 |
|
|
|
| 590 |
|
|
if (retval <= 0) {
|
| 591 |
|
|
if (retval == MXSER_ERR_IRQ)
|
| 592 |
|
|
printk("Invalid interrupt number,board not configured\n");
|
| 593 |
|
|
else if (retval == MXSER_ERR_IRQ_CONFLIT)
|
| 594 |
|
|
printk("Invalid interrupt number,board not configured\n");
|
| 595 |
|
|
else if (retval == MXSER_ERR_VECTOR)
|
| 596 |
|
|
printk("Invalid interrupt vector,board not configured\n");
|
| 597 |
|
|
else if (retval == MXSER_ERR_IOADDR)
|
| 598 |
|
|
printk("Invalid I/O address,board not configured\n");
|
| 599 |
|
|
|
| 600 |
|
|
continue;
|
| 601 |
|
|
}
|
| 602 |
|
|
hwconf.pdev = NULL;
|
| 603 |
|
|
|
| 604 |
|
|
if (mxser_initbrd(m, &hwconf) < 0)
|
| 605 |
|
|
continue;
|
| 606 |
|
|
|
| 607 |
|
|
mxser_getcfg(m, &hwconf);
|
| 608 |
|
|
|
| 609 |
|
|
m++;
|
| 610 |
|
|
}
|
| 611 |
|
|
|
| 612 |
|
|
/* Start finding ISA boards from module arg */
|
| 613 |
|
|
for (b = 0; b < MXSER_BOARDS && m < MXSER_BOARDS; b++) {
|
| 614 |
|
|
int cap;
|
| 615 |
|
|
if (!(cap = ioaddr[b]))
|
| 616 |
|
|
continue;
|
| 617 |
|
|
|
| 618 |
|
|
retval = mxser_get_ISA_conf(cap, &hwconf);
|
| 619 |
|
|
|
| 620 |
|
|
if (retval != 0)
|
| 621 |
|
|
printk("Found MOXA %s board (CAP=0x%x)\n",
|
| 622 |
|
|
mxser_brdname[hwconf.board_type],
|
| 623 |
|
|
ioaddr[b]);
|
| 624 |
|
|
|
| 625 |
|
|
if (retval <= 0) {
|
| 626 |
|
|
if (retval == MXSER_ERR_IRQ)
|
| 627 |
|
|
printk("Invalid interrupt number,board not configured\n");
|
| 628 |
|
|
else if (retval == MXSER_ERR_IRQ_CONFLIT)
|
| 629 |
|
|
printk("Invalid interrupt number,board not configured\n");
|
| 630 |
|
|
else if (retval == MXSER_ERR_VECTOR)
|
| 631 |
|
|
printk("Invalid interrupt vector,board not configured\n");
|
| 632 |
|
|
else if (retval == MXSER_ERR_IOADDR)
|
| 633 |
|
|
printk("Invalid I/O address,board not configured\n");
|
| 634 |
|
|
|
| 635 |
|
|
continue;
|
| 636 |
|
|
}
|
| 637 |
|
|
hwconf.pdev = NULL;
|
| 638 |
|
|
|
| 639 |
|
|
if (mxser_initbrd(m, &hwconf) < 0)
|
| 640 |
|
|
continue;
|
| 641 |
|
|
|
| 642 |
|
|
mxser_getcfg(m, &hwconf);
|
| 643 |
|
|
|
| 644 |
|
|
m++;
|
| 645 |
|
|
}
|
| 646 |
|
|
|
| 647 |
|
|
/* start finding PCI board here */
|
| 648 |
|
|
|
| 649 |
|
|
#ifdef CONFIG_PCI
|
| 650 |
|
|
{
|
| 651 |
|
|
struct pci_dev *pdev = NULL;
|
| 652 |
|
|
|
| 653 |
|
|
n = (sizeof(mxser_pcibrds) / sizeof(mxser_pcibrds[0])) - 1;
|
| 654 |
|
|
index = 0;
|
| 655 |
|
|
for (b = 0; b < n; b++) {
|
| 656 |
|
|
while ((pdev = pci_find_device(mxser_pcibrds[b].vendor, mxser_pcibrds[b].device, pdev)) != NULL)
|
| 657 |
|
|
{
|
| 658 |
|
|
if (pci_enable_device(pdev))
|
| 659 |
|
|
continue;
|
| 660 |
|
|
hwconf.pdev = pdev;
|
| 661 |
|
|
printk("Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
|
| 662 |
|
|
mxser_brdname[mxser_pcibrds[b].driver_data],
|
| 663 |
|
|
pdev->bus->number, PCI_SLOT(pdev->devfn));
|
| 664 |
|
|
if (m >= MXSER_BOARDS) {
|
| 665 |
|
|
printk("Too many Smartio family boards found (maximum %d),board not configured\n", MXSER_BOARDS);
|
| 666 |
|
|
} else {
|
| 667 |
|
|
retval = mxser_get_PCI_conf(pdev, mxser_pcibrds[b].driver_data, &hwconf);
|
| 668 |
|
|
if (retval < 0) {
|
| 669 |
|
|
if (retval == MXSER_ERR_IRQ)
|
| 670 |
|
|
printk("Invalid interrupt number,board not configured\n");
|
| 671 |
|
|
else if (retval == MXSER_ERR_IRQ_CONFLIT)
|
| 672 |
|
|
printk("Invalid interrupt number,board not configured\n");
|
| 673 |
|
|
else if (retval == MXSER_ERR_VECTOR)
|
| 674 |
|
|
printk("Invalid interrupt vector,board not configured\n");
|
| 675 |
|
|
else if (retval == MXSER_ERR_IOADDR)
|
| 676 |
|
|
printk("Invalid I/O address,board not configured\n");
|
| 677 |
|
|
continue;
|
| 678 |
|
|
}
|
| 679 |
|
|
if (mxser_initbrd(m, &hwconf) < 0)
|
| 680 |
|
|
continue;
|
| 681 |
|
|
mxser_getcfg(m, &hwconf);
|
| 682 |
|
|
m++;
|
| 683 |
|
|
}
|
| 684 |
|
|
}
|
| 685 |
|
|
}
|
| 686 |
|
|
}
|
| 687 |
|
|
#endif
|
| 688 |
|
|
|
| 689 |
|
|
for (i = m; i < MXSER_BOARDS; i++) {
|
| 690 |
|
|
mxsercfg[i].board_type = -1;
|
| 691 |
|
|
}
|
| 692 |
|
|
|
| 693 |
|
|
|
| 694 |
|
|
ret1 = 0;
|
| 695 |
|
|
ret2 = 0;
|
| 696 |
|
|
if (!(ret1 = tty_register_driver(&mxvar_sdriver))) {
|
| 697 |
|
|
if (!(ret2 = tty_register_driver(&mxvar_cdriver))) {
|
| 698 |
|
|
return 0;
|
| 699 |
|
|
} else {
|
| 700 |
|
|
tty_unregister_driver(&mxvar_sdriver);
|
| 701 |
|
|
printk("Couldn't install MOXA Smartio family callout driver !\n");
|
| 702 |
|
|
}
|
| 703 |
|
|
} else
|
| 704 |
|
|
printk("Couldn't install MOXA Smartio family driver !\n");
|
| 705 |
|
|
|
| 706 |
|
|
|
| 707 |
|
|
if (ret1 || ret2) {
|
| 708 |
|
|
for (i = 0; i < MXSER_BOARDS; i++) {
|
| 709 |
|
|
if (mxsercfg[i].board_type == -1)
|
| 710 |
|
|
continue;
|
| 711 |
|
|
else {
|
| 712 |
|
|
free_irq(mxsercfg[i].irq, &mxvar_table[i * MXSER_PORTS_PER_BOARD]);
|
| 713 |
|
|
}
|
| 714 |
|
|
}
|
| 715 |
|
|
return -1;
|
| 716 |
|
|
}
|
| 717 |
|
|
return (0);
|
| 718 |
|
|
}
|
| 719 |
|
|
|
| 720 |
|
|
static void mxser_do_softint(void *private_)
|
| 721 |
|
|
{
|
| 722 |
|
|
struct mxser_struct *info = (struct mxser_struct *) private_;
|
| 723 |
|
|
struct tty_struct *tty;
|
| 724 |
|
|
|
| 725 |
|
|
tty = info->tty;
|
| 726 |
|
|
if (tty) {
|
| 727 |
|
|
if (test_and_clear_bit(MXSER_EVENT_TXLOW, &info->event)) {
|
| 728 |
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
| 729 |
|
|
tty->ldisc.write_wakeup)
|
| 730 |
|
|
(tty->ldisc.write_wakeup) (tty);
|
| 731 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 732 |
|
|
}
|
| 733 |
|
|
if (test_and_clear_bit(MXSER_EVENT_HANGUP, &info->event)) {
|
| 734 |
|
|
tty_hangup(tty); /* FIXME: module removal race here - AKPM */
|
| 735 |
|
|
}
|
| 736 |
|
|
}
|
| 737 |
|
|
MOD_DEC_USE_COUNT;
|
| 738 |
|
|
}
|
| 739 |
|
|
|
| 740 |
|
|
/*
|
| 741 |
|
|
* This routine is called whenever a serial port is opened. It
|
| 742 |
|
|
* enables interrupts for a serial port, linking in its async structure into
|
| 743 |
|
|
* the IRQ chain. It also performs the serial-specific
|
| 744 |
|
|
* initialization for the tty structure.
|
| 745 |
|
|
*/
|
| 746 |
|
|
|
| 747 |
|
|
static int mxser_open(struct tty_struct *tty, struct file *filp)
|
| 748 |
|
|
{
|
| 749 |
|
|
struct mxser_struct *info;
|
| 750 |
|
|
int retval, line;
|
| 751 |
|
|
unsigned long page;
|
| 752 |
|
|
|
| 753 |
|
|
line = PORTNO(tty);
|
| 754 |
|
|
if (line == MXSER_PORTS)
|
| 755 |
|
|
return (0);
|
| 756 |
|
|
if ((line < 0) || (line > MXSER_PORTS))
|
| 757 |
|
|
return (-ENODEV);
|
| 758 |
|
|
info = mxvar_table + line;
|
| 759 |
|
|
if (!info->base)
|
| 760 |
|
|
return (-ENODEV);
|
| 761 |
|
|
|
| 762 |
|
|
info->count++;
|
| 763 |
|
|
tty->driver_data = info;
|
| 764 |
|
|
info->tty = tty;
|
| 765 |
|
|
|
| 766 |
|
|
if (!mxvar_tmp_buf) {
|
| 767 |
|
|
page = get_free_page(GFP_KERNEL);
|
| 768 |
|
|
if (!page)
|
| 769 |
|
|
return (-ENOMEM);
|
| 770 |
|
|
if (mxvar_tmp_buf)
|
| 771 |
|
|
free_page(page);
|
| 772 |
|
|
else
|
| 773 |
|
|
mxvar_tmp_buf = (unsigned char *) page;
|
| 774 |
|
|
}
|
| 775 |
|
|
/*
|
| 776 |
|
|
* Start up serial port
|
| 777 |
|
|
*/
|
| 778 |
|
|
retval = mxser_startup(info);
|
| 779 |
|
|
if (retval)
|
| 780 |
|
|
return (retval);
|
| 781 |
|
|
|
| 782 |
|
|
retval = mxser_block_til_ready(tty, filp, info);
|
| 783 |
|
|
if (retval)
|
| 784 |
|
|
return (retval);
|
| 785 |
|
|
|
| 786 |
|
|
if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
|
| 787 |
|
|
if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
|
| 788 |
|
|
*tty->termios = info->normal_termios;
|
| 789 |
|
|
else
|
| 790 |
|
|
*tty->termios = info->callout_termios;
|
| 791 |
|
|
mxser_change_speed(info, 0);
|
| 792 |
|
|
}
|
| 793 |
|
|
info->session = current->session;
|
| 794 |
|
|
info->pgrp = current->pgrp;
|
| 795 |
|
|
|
| 796 |
|
|
MOD_INC_USE_COUNT;
|
| 797 |
|
|
|
| 798 |
|
|
return (0);
|
| 799 |
|
|
}
|
| 800 |
|
|
|
| 801 |
|
|
/*
|
| 802 |
|
|
* This routine is called when the serial port gets closed. First, we
|
| 803 |
|
|
* wait for the last remaining data to be sent. Then, we unlink its
|
| 804 |
|
|
* async structure from the interrupt chain if necessary, and we free
|
| 805 |
|
|
* that IRQ if nothing is left in the chain.
|
| 806 |
|
|
*/
|
| 807 |
|
|
|
| 808 |
|
|
static void mxser_close(struct tty_struct *tty, struct file *filp)
|
| 809 |
|
|
{
|
| 810 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 811 |
|
|
unsigned long flags;
|
| 812 |
|
|
unsigned long timeout;
|
| 813 |
|
|
|
| 814 |
|
|
if (PORTNO(tty) == MXSER_PORTS)
|
| 815 |
|
|
return;
|
| 816 |
|
|
if (!info)
|
| 817 |
|
|
return;
|
| 818 |
|
|
|
| 819 |
|
|
save_flags(flags);
|
| 820 |
|
|
cli();
|
| 821 |
|
|
|
| 822 |
|
|
if (tty_hung_up_p(filp)) {
|
| 823 |
|
|
restore_flags(flags);
|
| 824 |
|
|
MOD_DEC_USE_COUNT;
|
| 825 |
|
|
return;
|
| 826 |
|
|
}
|
| 827 |
|
|
if ((tty->count == 1) && (info->count != 1)) {
|
| 828 |
|
|
/*
|
| 829 |
|
|
* Uh, oh. tty->count is 1, which means that the tty
|
| 830 |
|
|
* structure will be freed. Info->count should always
|
| 831 |
|
|
* be one in these conditions. If it's greater than
|
| 832 |
|
|
* one, we've got real problems, since it means the
|
| 833 |
|
|
* serial port won't be shutdown.
|
| 834 |
|
|
*/
|
| 835 |
|
|
printk("mxser_close: bad serial port count; tty->count is 1, "
|
| 836 |
|
|
"info->count is %d\n", info->count);
|
| 837 |
|
|
info->count = 1;
|
| 838 |
|
|
}
|
| 839 |
|
|
if (--info->count < 0) {
|
| 840 |
|
|
printk("mxser_close: bad serial port count for ttys%d: %d\n",
|
| 841 |
|
|
info->port, info->count);
|
| 842 |
|
|
info->count = 0;
|
| 843 |
|
|
}
|
| 844 |
|
|
if (info->count) {
|
| 845 |
|
|
restore_flags(flags);
|
| 846 |
|
|
MOD_DEC_USE_COUNT;
|
| 847 |
|
|
return;
|
| 848 |
|
|
}
|
| 849 |
|
|
info->flags |= ASYNC_CLOSING;
|
| 850 |
|
|
/*
|
| 851 |
|
|
* Save the termios structure, since this port may have
|
| 852 |
|
|
* separate termios for callout and dialin.
|
| 853 |
|
|
*/
|
| 854 |
|
|
if (info->flags & ASYNC_NORMAL_ACTIVE)
|
| 855 |
|
|
info->normal_termios = *tty->termios;
|
| 856 |
|
|
if (info->flags & ASYNC_CALLOUT_ACTIVE)
|
| 857 |
|
|
info->callout_termios = *tty->termios;
|
| 858 |
|
|
/*
|
| 859 |
|
|
* Now we wait for the transmit buffer to clear; and we notify
|
| 860 |
|
|
* the line discipline to only process XON/XOFF characters.
|
| 861 |
|
|
*/
|
| 862 |
|
|
tty->closing = 1;
|
| 863 |
|
|
if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
|
| 864 |
|
|
tty_wait_until_sent(tty, info->closing_wait);
|
| 865 |
|
|
/*
|
| 866 |
|
|
* At this point we stop accepting input. To do this, we
|
| 867 |
|
|
* disable the receive line status interrupts, and tell the
|
| 868 |
|
|
* interrupt driver to stop checking the data ready bit in the
|
| 869 |
|
|
* line status register.
|
| 870 |
|
|
*/
|
| 871 |
|
|
info->IER &= ~UART_IER_RLSI;
|
| 872 |
|
|
/* by William
|
| 873 |
|
|
info->read_status_mask &= ~UART_LSR_DR;
|
| 874 |
|
|
*/
|
| 875 |
|
|
if (info->flags & ASYNC_INITIALIZED) {
|
| 876 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 877 |
|
|
/*
|
| 878 |
|
|
* Before we drop DTR, make sure the UART transmitter
|
| 879 |
|
|
* has completely drained; this is especially
|
| 880 |
|
|
* important if there is a transmit FIFO!
|
| 881 |
|
|
*/
|
| 882 |
|
|
timeout = jiffies + HZ;
|
| 883 |
|
|
while (!(inb(info->base + UART_LSR) & UART_LSR_TEMT)) {
|
| 884 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 885 |
|
|
schedule_timeout(5);
|
| 886 |
|
|
if (jiffies > timeout)
|
| 887 |
|
|
break;
|
| 888 |
|
|
}
|
| 889 |
|
|
}
|
| 890 |
|
|
mxser_shutdown(info);
|
| 891 |
|
|
if (tty->driver.flush_buffer)
|
| 892 |
|
|
tty->driver.flush_buffer(tty);
|
| 893 |
|
|
if (tty->ldisc.flush_buffer)
|
| 894 |
|
|
tty->ldisc.flush_buffer(tty);
|
| 895 |
|
|
tty->closing = 0;
|
| 896 |
|
|
info->event = 0;
|
| 897 |
|
|
info->tty = 0;
|
| 898 |
|
|
if (info->blocked_open) {
|
| 899 |
|
|
if (info->close_delay) {
|
| 900 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 901 |
|
|
schedule_timeout(info->close_delay);
|
| 902 |
|
|
}
|
| 903 |
|
|
wake_up_interruptible(&info->open_wait);
|
| 904 |
|
|
}
|
| 905 |
|
|
info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE |
|
| 906 |
|
|
ASYNC_CLOSING);
|
| 907 |
|
|
wake_up_interruptible(&info->close_wait);
|
| 908 |
|
|
restore_flags(flags);
|
| 909 |
|
|
|
| 910 |
|
|
MOD_DEC_USE_COUNT;
|
| 911 |
|
|
}
|
| 912 |
|
|
|
| 913 |
|
|
static int mxser_write(struct tty_struct *tty, int from_user,
|
| 914 |
|
|
const unsigned char *buf, int count)
|
| 915 |
|
|
{
|
| 916 |
|
|
int c, total = 0;
|
| 917 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 918 |
|
|
unsigned long flags;
|
| 919 |
|
|
|
| 920 |
|
|
if (!tty || !info->xmit_buf || !mxvar_tmp_buf)
|
| 921 |
|
|
return (0);
|
| 922 |
|
|
|
| 923 |
|
|
save_flags(flags);
|
| 924 |
|
|
if (from_user) {
|
| 925 |
|
|
down(&mxvar_tmp_buf_sem);
|
| 926 |
|
|
while (1) {
|
| 927 |
|
|
c = MIN(count, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
|
| 928 |
|
|
SERIAL_XMIT_SIZE - info->xmit_head));
|
| 929 |
|
|
if (c <= 0)
|
| 930 |
|
|
break;
|
| 931 |
|
|
|
| 932 |
|
|
c -= copy_from_user(mxvar_tmp_buf, buf, c);
|
| 933 |
|
|
if (!c) {
|
| 934 |
|
|
if (!total)
|
| 935 |
|
|
total = -EFAULT;
|
| 936 |
|
|
break;
|
| 937 |
|
|
}
|
| 938 |
|
|
|
| 939 |
|
|
cli();
|
| 940 |
|
|
c = MIN(c, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
|
| 941 |
|
|
SERIAL_XMIT_SIZE - info->xmit_head));
|
| 942 |
|
|
memcpy(info->xmit_buf + info->xmit_head, mxvar_tmp_buf, c);
|
| 943 |
|
|
info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE - 1);
|
| 944 |
|
|
info->xmit_cnt += c;
|
| 945 |
|
|
restore_flags(flags);
|
| 946 |
|
|
|
| 947 |
|
|
buf += c;
|
| 948 |
|
|
count -= c;
|
| 949 |
|
|
total += c;
|
| 950 |
|
|
}
|
| 951 |
|
|
up(&mxvar_tmp_buf_sem);
|
| 952 |
|
|
} else {
|
| 953 |
|
|
while (1) {
|
| 954 |
|
|
cli();
|
| 955 |
|
|
c = MIN(count, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
|
| 956 |
|
|
SERIAL_XMIT_SIZE - info->xmit_head));
|
| 957 |
|
|
if (c <= 0) {
|
| 958 |
|
|
restore_flags(flags);
|
| 959 |
|
|
break;
|
| 960 |
|
|
}
|
| 961 |
|
|
|
| 962 |
|
|
memcpy(info->xmit_buf + info->xmit_head, buf, c);
|
| 963 |
|
|
info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE - 1);
|
| 964 |
|
|
info->xmit_cnt += c;
|
| 965 |
|
|
restore_flags(flags);
|
| 966 |
|
|
|
| 967 |
|
|
buf += c;
|
| 968 |
|
|
count -= c;
|
| 969 |
|
|
total += c;
|
| 970 |
|
|
}
|
| 971 |
|
|
}
|
| 972 |
|
|
|
| 973 |
|
|
cli();
|
| 974 |
|
|
if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
|
| 975 |
|
|
!(info->IER & UART_IER_THRI)) {
|
| 976 |
|
|
info->IER |= UART_IER_THRI;
|
| 977 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 978 |
|
|
}
|
| 979 |
|
|
restore_flags(flags);
|
| 980 |
|
|
return (total);
|
| 981 |
|
|
}
|
| 982 |
|
|
|
| 983 |
|
|
static void mxser_put_char(struct tty_struct *tty, unsigned char ch)
|
| 984 |
|
|
{
|
| 985 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 986 |
|
|
unsigned long flags;
|
| 987 |
|
|
|
| 988 |
|
|
if (!tty || !info->xmit_buf)
|
| 989 |
|
|
return;
|
| 990 |
|
|
|
| 991 |
|
|
save_flags(flags);
|
| 992 |
|
|
cli();
|
| 993 |
|
|
if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
|
| 994 |
|
|
restore_flags(flags);
|
| 995 |
|
|
return;
|
| 996 |
|
|
}
|
| 997 |
|
|
info->xmit_buf[info->xmit_head++] = ch;
|
| 998 |
|
|
info->xmit_head &= SERIAL_XMIT_SIZE - 1;
|
| 999 |
|
|
info->xmit_cnt++;
|
| 1000 |
|
|
/********************************************** why ??? ***********
|
| 1001 |
|
|
if ( !tty->stopped && !tty->hw_stopped &&
|
| 1002 |
|
|
!(info->IER & UART_IER_THRI) ) {
|
| 1003 |
|
|
info->IER |= UART_IER_THRI;
|
| 1004 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1005 |
|
|
}
|
| 1006 |
|
|
*****************************************************************/
|
| 1007 |
|
|
restore_flags(flags);
|
| 1008 |
|
|
}
|
| 1009 |
|
|
|
| 1010 |
|
|
static void mxser_flush_chars(struct tty_struct *tty)
|
| 1011 |
|
|
{
|
| 1012 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1013 |
|
|
unsigned long flags;
|
| 1014 |
|
|
|
| 1015 |
|
|
if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
|
| 1016 |
|
|
!info->xmit_buf)
|
| 1017 |
|
|
return;
|
| 1018 |
|
|
|
| 1019 |
|
|
save_flags(flags);
|
| 1020 |
|
|
cli();
|
| 1021 |
|
|
info->IER |= UART_IER_THRI;
|
| 1022 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1023 |
|
|
restore_flags(flags);
|
| 1024 |
|
|
}
|
| 1025 |
|
|
|
| 1026 |
|
|
static int mxser_write_room(struct tty_struct *tty)
|
| 1027 |
|
|
{
|
| 1028 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1029 |
|
|
int ret;
|
| 1030 |
|
|
|
| 1031 |
|
|
ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
|
| 1032 |
|
|
if (ret < 0)
|
| 1033 |
|
|
ret = 0;
|
| 1034 |
|
|
return (ret);
|
| 1035 |
|
|
}
|
| 1036 |
|
|
|
| 1037 |
|
|
static int mxser_chars_in_buffer(struct tty_struct *tty)
|
| 1038 |
|
|
{
|
| 1039 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1040 |
|
|
|
| 1041 |
|
|
return (info->xmit_cnt);
|
| 1042 |
|
|
}
|
| 1043 |
|
|
|
| 1044 |
|
|
static void mxser_flush_buffer(struct tty_struct *tty)
|
| 1045 |
|
|
{
|
| 1046 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1047 |
|
|
unsigned long flags;
|
| 1048 |
|
|
|
| 1049 |
|
|
save_flags(flags);
|
| 1050 |
|
|
cli();
|
| 1051 |
|
|
info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
|
| 1052 |
|
|
restore_flags(flags);
|
| 1053 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 1054 |
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
| 1055 |
|
|
tty->ldisc.write_wakeup)
|
| 1056 |
|
|
(tty->ldisc.write_wakeup) (tty);
|
| 1057 |
|
|
}
|
| 1058 |
|
|
|
| 1059 |
|
|
static int mxser_ioctl(struct tty_struct *tty, struct file *file,
|
| 1060 |
|
|
unsigned int cmd, unsigned long arg)
|
| 1061 |
|
|
{
|
| 1062 |
|
|
unsigned long flags;
|
| 1063 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1064 |
|
|
int retval;
|
| 1065 |
|
|
struct async_icount cprev, cnow; /* kernel counter temps */
|
| 1066 |
|
|
struct serial_icounter_struct *p_cuser; /* user space */
|
| 1067 |
|
|
unsigned long templ;
|
| 1068 |
|
|
|
| 1069 |
|
|
if (PORTNO(tty) == MXSER_PORTS)
|
| 1070 |
|
|
return (mxser_ioctl_special(cmd, arg));
|
| 1071 |
|
|
if ((cmd != TIOCGSERIAL) && (cmd != TIOCMIWAIT) &&
|
| 1072 |
|
|
(cmd != TIOCGICOUNT)) {
|
| 1073 |
|
|
if (tty->flags & (1 << TTY_IO_ERROR))
|
| 1074 |
|
|
return (-EIO);
|
| 1075 |
|
|
}
|
| 1076 |
|
|
switch (cmd) {
|
| 1077 |
|
|
case TCSBRK: /* SVID version: non-zero arg --> no break */
|
| 1078 |
|
|
retval = tty_check_change(tty);
|
| 1079 |
|
|
if (retval)
|
| 1080 |
|
|
return (retval);
|
| 1081 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1082 |
|
|
if (!arg)
|
| 1083 |
|
|
mxser_send_break(info, HZ / 4); /* 1/4 second */
|
| 1084 |
|
|
return (0);
|
| 1085 |
|
|
case TCSBRKP: /* support for POSIX tcsendbreak() */
|
| 1086 |
|
|
retval = tty_check_change(tty);
|
| 1087 |
|
|
if (retval)
|
| 1088 |
|
|
return (retval);
|
| 1089 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1090 |
|
|
mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
|
| 1091 |
|
|
return (0);
|
| 1092 |
|
|
case TIOCGSOFTCAR:
|
| 1093 |
|
|
return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg);
|
| 1094 |
|
|
case TIOCSSOFTCAR:
|
| 1095 |
|
|
if(get_user(templ, (unsigned long *) arg))
|
| 1096 |
|
|
return -EFAULT;
|
| 1097 |
|
|
arg = templ;
|
| 1098 |
|
|
tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
|
| 1099 |
|
|
(arg ? CLOCAL : 0));
|
| 1100 |
|
|
return (0);
|
| 1101 |
|
|
case TIOCMGET:
|
| 1102 |
|
|
return (mxser_get_modem_info(info, (unsigned int *) arg));
|
| 1103 |
|
|
case TIOCMBIS:
|
| 1104 |
|
|
case TIOCMBIC:
|
| 1105 |
|
|
case TIOCMSET:
|
| 1106 |
|
|
return (mxser_set_modem_info(info, cmd, (unsigned int *) arg));
|
| 1107 |
|
|
case TIOCGSERIAL:
|
| 1108 |
|
|
return (mxser_get_serial_info(info, (struct serial_struct *) arg));
|
| 1109 |
|
|
case TIOCSSERIAL:
|
| 1110 |
|
|
return (mxser_set_serial_info(info, (struct serial_struct *) arg));
|
| 1111 |
|
|
case TIOCSERGETLSR: /* Get line status register */
|
| 1112 |
|
|
return (mxser_get_lsr_info(info, (unsigned int *) arg));
|
| 1113 |
|
|
/*
|
| 1114 |
|
|
* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
|
| 1115 |
|
|
* - mask passed in arg for lines of interest
|
| 1116 |
|
|
* (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
|
| 1117 |
|
|
* Caller should use TIOCGICOUNT to see which one it was
|
| 1118 |
|
|
*/
|
| 1119 |
|
|
case TIOCMIWAIT:
|
| 1120 |
|
|
save_flags(flags);
|
| 1121 |
|
|
cli();
|
| 1122 |
|
|
cprev = info->icount; /* note the counters on entry */
|
| 1123 |
|
|
restore_flags(flags);
|
| 1124 |
|
|
while (1) {
|
| 1125 |
|
|
interruptible_sleep_on(&info->delta_msr_wait);
|
| 1126 |
|
|
/* see if a signal did it */
|
| 1127 |
|
|
if (signal_pending(current))
|
| 1128 |
|
|
return (-ERESTARTSYS);
|
| 1129 |
|
|
save_flags(flags);
|
| 1130 |
|
|
cli();
|
| 1131 |
|
|
cnow = info->icount; /* atomic copy */
|
| 1132 |
|
|
restore_flags(flags);
|
| 1133 |
|
|
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
|
| 1134 |
|
|
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
|
| 1135 |
|
|
return (-EIO); /* no change => error */
|
| 1136 |
|
|
if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
|
| 1137 |
|
|
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
|
| 1138 |
|
|
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
|
| 1139 |
|
|
((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
|
| 1140 |
|
|
return (0);
|
| 1141 |
|
|
}
|
| 1142 |
|
|
cprev = cnow;
|
| 1143 |
|
|
}
|
| 1144 |
|
|
/* NOTREACHED */
|
| 1145 |
|
|
/*
|
| 1146 |
|
|
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
|
| 1147 |
|
|
* Return: write counters to the user passed counter struct
|
| 1148 |
|
|
* NB: both 1->0 and 0->1 transitions are counted except for
|
| 1149 |
|
|
* RI where only 0->1 is counted.
|
| 1150 |
|
|
*/
|
| 1151 |
|
|
case TIOCGICOUNT:
|
| 1152 |
|
|
save_flags(flags);
|
| 1153 |
|
|
cli();
|
| 1154 |
|
|
cnow = info->icount;
|
| 1155 |
|
|
restore_flags(flags);
|
| 1156 |
|
|
p_cuser = (struct serial_icounter_struct *) arg;
|
| 1157 |
|
|
if(put_user(cnow.cts, &p_cuser->cts))
|
| 1158 |
|
|
return -EFAULT;
|
| 1159 |
|
|
if(put_user(cnow.dsr, &p_cuser->dsr))
|
| 1160 |
|
|
return -EFAULT;
|
| 1161 |
|
|
if(put_user(cnow.rng, &p_cuser->rng))
|
| 1162 |
|
|
return -EFAULT;
|
| 1163 |
|
|
return put_user(cnow.dcd, &p_cuser->dcd);
|
| 1164 |
|
|
case MOXA_HighSpeedOn:
|
| 1165 |
|
|
return put_user(info->baud_base != 115200 ? 1 : 0, (int *) arg);
|
| 1166 |
|
|
default:
|
| 1167 |
|
|
return (-ENOIOCTLCMD);
|
| 1168 |
|
|
}
|
| 1169 |
|
|
return (0);
|
| 1170 |
|
|
}
|
| 1171 |
|
|
|
| 1172 |
|
|
static int mxser_ioctl_special(unsigned int cmd, unsigned long arg)
|
| 1173 |
|
|
{
|
| 1174 |
|
|
int i, result, status;
|
| 1175 |
|
|
|
| 1176 |
|
|
switch (cmd) {
|
| 1177 |
|
|
case MOXA_GET_CONF:
|
| 1178 |
|
|
if(copy_to_user((struct mxser_hwconf *) arg, mxsercfg,
|
| 1179 |
|
|
sizeof(struct mxser_hwconf) * 4))
|
| 1180 |
|
|
return -EFAULT;
|
| 1181 |
|
|
return 0;
|
| 1182 |
|
|
case MOXA_GET_MAJOR:
|
| 1183 |
|
|
if(copy_to_user((int *) arg, &ttymajor, sizeof(int)))
|
| 1184 |
|
|
return -EFAULT;
|
| 1185 |
|
|
return 0;
|
| 1186 |
|
|
|
| 1187 |
|
|
case MOXA_GET_CUMAJOR:
|
| 1188 |
|
|
if(copy_to_user((int *) arg, &calloutmajor, sizeof(int)))
|
| 1189 |
|
|
return -EFAULT;
|
| 1190 |
|
|
return 0;
|
| 1191 |
|
|
|
| 1192 |
|
|
case MOXA_CHKPORTENABLE:
|
| 1193 |
|
|
result = 0;
|
| 1194 |
|
|
for (i = 0; i < MXSER_PORTS; i++) {
|
| 1195 |
|
|
if (mxvar_table[i].base)
|
| 1196 |
|
|
result |= (1 << i);
|
| 1197 |
|
|
}
|
| 1198 |
|
|
return put_user(result, (unsigned long *) arg);
|
| 1199 |
|
|
case MOXA_GETDATACOUNT:
|
| 1200 |
|
|
if(copy_to_user((struct mxser_log *) arg, &mxvar_log, sizeof(mxvar_log)))
|
| 1201 |
|
|
return -EFAULT;
|
| 1202 |
|
|
return (0);
|
| 1203 |
|
|
case MOXA_GETMSTATUS:
|
| 1204 |
|
|
for (i = 0; i < MXSER_PORTS; i++) {
|
| 1205 |
|
|
GMStatus[i].ri = 0;
|
| 1206 |
|
|
if (!mxvar_table[i].base) {
|
| 1207 |
|
|
GMStatus[i].dcd = 0;
|
| 1208 |
|
|
GMStatus[i].dsr = 0;
|
| 1209 |
|
|
GMStatus[i].cts = 0;
|
| 1210 |
|
|
continue;
|
| 1211 |
|
|
}
|
| 1212 |
|
|
if (!mxvar_table[i].tty || !mxvar_table[i].tty->termios)
|
| 1213 |
|
|
GMStatus[i].cflag = mxvar_table[i].normal_termios.c_cflag;
|
| 1214 |
|
|
else
|
| 1215 |
|
|
GMStatus[i].cflag = mxvar_table[i].tty->termios->c_cflag;
|
| 1216 |
|
|
|
| 1217 |
|
|
status = inb(mxvar_table[i].base + UART_MSR);
|
| 1218 |
|
|
if (status & 0x80 /*UART_MSR_DCD */ )
|
| 1219 |
|
|
GMStatus[i].dcd = 1;
|
| 1220 |
|
|
else
|
| 1221 |
|
|
GMStatus[i].dcd = 0;
|
| 1222 |
|
|
|
| 1223 |
|
|
if (status & 0x20 /*UART_MSR_DSR */ )
|
| 1224 |
|
|
GMStatus[i].dsr = 1;
|
| 1225 |
|
|
else
|
| 1226 |
|
|
GMStatus[i].dsr = 0;
|
| 1227 |
|
|
|
| 1228 |
|
|
|
| 1229 |
|
|
if (status & 0x10 /*UART_MSR_CTS */ )
|
| 1230 |
|
|
GMStatus[i].cts = 1;
|
| 1231 |
|
|
else
|
| 1232 |
|
|
GMStatus[i].cts = 0;
|
| 1233 |
|
|
}
|
| 1234 |
|
|
if(copy_to_user((struct mxser_mstatus *) arg, GMStatus,
|
| 1235 |
|
|
sizeof(struct mxser_mstatus) * MXSER_PORTS))
|
| 1236 |
|
|
return -EFAULT;
|
| 1237 |
|
|
return 0;
|
| 1238 |
|
|
default:
|
| 1239 |
|
|
return (-ENOIOCTLCMD);
|
| 1240 |
|
|
}
|
| 1241 |
|
|
return (0);
|
| 1242 |
|
|
}
|
| 1243 |
|
|
|
| 1244 |
|
|
/*
|
| 1245 |
|
|
* This routine is called by the upper-layer tty layer to signal that
|
| 1246 |
|
|
* incoming characters should be throttled.
|
| 1247 |
|
|
*/
|
| 1248 |
|
|
static void mxser_throttle(struct tty_struct *tty)
|
| 1249 |
|
|
{
|
| 1250 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1251 |
|
|
unsigned long flags;
|
| 1252 |
|
|
|
| 1253 |
|
|
if (I_IXOFF(tty)) {
|
| 1254 |
|
|
info->x_char = STOP_CHAR(tty);
|
| 1255 |
|
|
save_flags(flags);
|
| 1256 |
|
|
cli();
|
| 1257 |
|
|
outb(info->IER, 0);
|
| 1258 |
|
|
info->IER |= UART_IER_THRI;
|
| 1259 |
|
|
outb(info->IER, info->base + UART_IER); /* force Tx interrupt */
|
| 1260 |
|
|
restore_flags(flags);
|
| 1261 |
|
|
}
|
| 1262 |
|
|
if (info->tty->termios->c_cflag & CRTSCTS) {
|
| 1263 |
|
|
info->MCR &= ~UART_MCR_RTS;
|
| 1264 |
|
|
save_flags(flags);
|
| 1265 |
|
|
cli();
|
| 1266 |
|
|
outb(info->MCR, info->base + UART_MCR);
|
| 1267 |
|
|
restore_flags(flags);
|
| 1268 |
|
|
}
|
| 1269 |
|
|
}
|
| 1270 |
|
|
|
| 1271 |
|
|
static void mxser_unthrottle(struct tty_struct *tty)
|
| 1272 |
|
|
{
|
| 1273 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1274 |
|
|
unsigned long flags;
|
| 1275 |
|
|
|
| 1276 |
|
|
if (I_IXOFF(tty)) {
|
| 1277 |
|
|
if (info->x_char)
|
| 1278 |
|
|
info->x_char = 0;
|
| 1279 |
|
|
else {
|
| 1280 |
|
|
info->x_char = START_CHAR(tty);
|
| 1281 |
|
|
save_flags(flags);
|
| 1282 |
|
|
cli();
|
| 1283 |
|
|
outb(info->IER, 0);
|
| 1284 |
|
|
info->IER |= UART_IER_THRI; /* force Tx interrupt */
|
| 1285 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1286 |
|
|
restore_flags(flags);
|
| 1287 |
|
|
}
|
| 1288 |
|
|
}
|
| 1289 |
|
|
if (info->tty->termios->c_cflag & CRTSCTS) {
|
| 1290 |
|
|
info->MCR |= UART_MCR_RTS;
|
| 1291 |
|
|
save_flags(flags);
|
| 1292 |
|
|
cli();
|
| 1293 |
|
|
outb(info->MCR, info->base + UART_MCR);
|
| 1294 |
|
|
restore_flags(flags);
|
| 1295 |
|
|
}
|
| 1296 |
|
|
}
|
| 1297 |
|
|
|
| 1298 |
|
|
static void mxser_set_termios(struct tty_struct *tty,
|
| 1299 |
|
|
struct termios *old_termios)
|
| 1300 |
|
|
{
|
| 1301 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1302 |
|
|
|
| 1303 |
|
|
/* 8-2-99 by William
|
| 1304 |
|
|
if ( (tty->termios->c_cflag == old_termios->c_cflag) &&
|
| 1305 |
|
|
(RELEVANT_IFLAG(tty->termios->c_iflag) ==
|
| 1306 |
|
|
RELEVANT_IFLAG(old_termios->c_iflag)) )
|
| 1307 |
|
|
return;
|
| 1308 |
|
|
|
| 1309 |
|
|
mxser_change_speed(info, old_termios);
|
| 1310 |
|
|
|
| 1311 |
|
|
if ( (old_termios->c_cflag & CRTSCTS) &&
|
| 1312 |
|
|
!(tty->termios->c_cflag & CRTSCTS) ) {
|
| 1313 |
|
|
tty->hw_stopped = 0;
|
| 1314 |
|
|
mxser_start(tty);
|
| 1315 |
|
|
}
|
| 1316 |
|
|
*/
|
| 1317 |
|
|
if ((tty->termios->c_cflag != old_termios->c_cflag) ||
|
| 1318 |
|
|
(RELEVANT_IFLAG(tty->termios->c_iflag) !=
|
| 1319 |
|
|
RELEVANT_IFLAG(old_termios->c_iflag))) {
|
| 1320 |
|
|
|
| 1321 |
|
|
mxser_change_speed(info, old_termios);
|
| 1322 |
|
|
|
| 1323 |
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
| 1324 |
|
|
!(tty->termios->c_cflag & CRTSCTS)) {
|
| 1325 |
|
|
tty->hw_stopped = 0;
|
| 1326 |
|
|
mxser_start(tty);
|
| 1327 |
|
|
}
|
| 1328 |
|
|
}
|
| 1329 |
|
|
/* Handle sw stopped */
|
| 1330 |
|
|
if ((old_termios->c_iflag & IXON) &&
|
| 1331 |
|
|
!(tty->termios->c_iflag & IXON)) {
|
| 1332 |
|
|
tty->stopped = 0;
|
| 1333 |
|
|
mxser_start(tty);
|
| 1334 |
|
|
}
|
| 1335 |
|
|
}
|
| 1336 |
|
|
|
| 1337 |
|
|
/*
|
| 1338 |
|
|
* mxser_stop() and mxser_start()
|
| 1339 |
|
|
*
|
| 1340 |
|
|
* This routines are called before setting or resetting tty->stopped.
|
| 1341 |
|
|
* They enable or disable transmitter interrupts, as necessary.
|
| 1342 |
|
|
*/
|
| 1343 |
|
|
static void mxser_stop(struct tty_struct *tty)
|
| 1344 |
|
|
{
|
| 1345 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1346 |
|
|
unsigned long flags;
|
| 1347 |
|
|
|
| 1348 |
|
|
save_flags(flags);
|
| 1349 |
|
|
cli();
|
| 1350 |
|
|
if (info->IER & UART_IER_THRI) {
|
| 1351 |
|
|
info->IER &= ~UART_IER_THRI;
|
| 1352 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1353 |
|
|
}
|
| 1354 |
|
|
restore_flags(flags);
|
| 1355 |
|
|
}
|
| 1356 |
|
|
|
| 1357 |
|
|
static void mxser_start(struct tty_struct *tty)
|
| 1358 |
|
|
{
|
| 1359 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1360 |
|
|
unsigned long flags;
|
| 1361 |
|
|
|
| 1362 |
|
|
save_flags(flags);
|
| 1363 |
|
|
cli();
|
| 1364 |
|
|
if (info->xmit_cnt && info->xmit_buf &&
|
| 1365 |
|
|
!(info->IER & UART_IER_THRI)) {
|
| 1366 |
|
|
info->IER |= UART_IER_THRI;
|
| 1367 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1368 |
|
|
}
|
| 1369 |
|
|
restore_flags(flags);
|
| 1370 |
|
|
}
|
| 1371 |
|
|
|
| 1372 |
|
|
/*
|
| 1373 |
|
|
* This routine is called by tty_hangup() when a hangup is signaled.
|
| 1374 |
|
|
*/
|
| 1375 |
|
|
void mxser_hangup(struct tty_struct *tty)
|
| 1376 |
|
|
{
|
| 1377 |
|
|
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
|
| 1378 |
|
|
|
| 1379 |
|
|
mxser_flush_buffer(tty);
|
| 1380 |
|
|
mxser_shutdown(info);
|
| 1381 |
|
|
info->event = 0;
|
| 1382 |
|
|
info->count = 0;
|
| 1383 |
|
|
info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE);
|
| 1384 |
|
|
info->tty = 0;
|
| 1385 |
|
|
wake_up_interruptible(&info->open_wait);
|
| 1386 |
|
|
}
|
| 1387 |
|
|
|
| 1388 |
|
|
/*
|
| 1389 |
|
|
* This is the serial driver's generic interrupt routine
|
| 1390 |
|
|
*/
|
| 1391 |
|
|
static void mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
| 1392 |
|
|
{
|
| 1393 |
|
|
int status, i;
|
| 1394 |
|
|
struct mxser_struct *info;
|
| 1395 |
|
|
struct mxser_struct *port;
|
| 1396 |
|
|
int max, irqbits, bits, msr;
|
| 1397 |
|
|
int pass_counter = 0;
|
| 1398 |
|
|
|
| 1399 |
|
|
port = 0;
|
| 1400 |
|
|
for (i = 0; i < MXSER_BOARDS; i++) {
|
| 1401 |
|
|
if (dev_id == &(mxvar_table[i * MXSER_PORTS_PER_BOARD])) {
|
| 1402 |
|
|
port = dev_id;
|
| 1403 |
|
|
break;
|
| 1404 |
|
|
}
|
| 1405 |
|
|
}
|
| 1406 |
|
|
|
| 1407 |
|
|
if (i == MXSER_BOARDS)
|
| 1408 |
|
|
return;
|
| 1409 |
|
|
if (port == 0)
|
| 1410 |
|
|
return;
|
| 1411 |
|
|
max = mxser_numports[mxsercfg[i].board_type];
|
| 1412 |
|
|
|
| 1413 |
|
|
while (1) {
|
| 1414 |
|
|
irqbits = inb(port->vector) & port->vectormask;
|
| 1415 |
|
|
if (irqbits == port->vectormask)
|
| 1416 |
|
|
break;
|
| 1417 |
|
|
for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) {
|
| 1418 |
|
|
if (irqbits == port->vectormask)
|
| 1419 |
|
|
break;
|
| 1420 |
|
|
if (bits & irqbits)
|
| 1421 |
|
|
continue;
|
| 1422 |
|
|
info = port + i;
|
| 1423 |
|
|
if (!info->tty ||
|
| 1424 |
|
|
(inb(info->base + UART_IIR) & UART_IIR_NO_INT))
|
| 1425 |
|
|
continue;
|
| 1426 |
|
|
status = inb(info->base + UART_LSR) & info->read_status_mask;
|
| 1427 |
|
|
if (status & UART_LSR_DR)
|
| 1428 |
|
|
mxser_receive_chars(info, &status);
|
| 1429 |
|
|
msr = inb(info->base + UART_MSR);
|
| 1430 |
|
|
if (msr & UART_MSR_ANY_DELTA)
|
| 1431 |
|
|
mxser_check_modem_status(info, msr);
|
| 1432 |
|
|
if (status & UART_LSR_THRE) {
|
| 1433 |
|
|
/* 8-2-99 by William
|
| 1434 |
|
|
if ( info->x_char || (info->xmit_cnt > 0) )
|
| 1435 |
|
|
*/
|
| 1436 |
|
|
mxser_transmit_chars(info);
|
| 1437 |
|
|
}
|
| 1438 |
|
|
}
|
| 1439 |
|
|
if (pass_counter++ > MXSER_ISR_PASS_LIMIT) {
|
| 1440 |
|
|
#if 0
|
| 1441 |
|
|
printk("MOXA Smartio/Indusrtio family driver interrupt loop break\n");
|
| 1442 |
|
|
#endif
|
| 1443 |
|
|
break; /* Prevent infinite loops */
|
| 1444 |
|
|
}
|
| 1445 |
|
|
}
|
| 1446 |
|
|
}
|
| 1447 |
|
|
|
| 1448 |
|
|
static inline void mxser_receive_chars(struct mxser_struct *info,
|
| 1449 |
|
|
int *status)
|
| 1450 |
|
|
{
|
| 1451 |
|
|
struct tty_struct *tty = info->tty;
|
| 1452 |
|
|
unsigned char ch;
|
| 1453 |
|
|
int ignored = 0;
|
| 1454 |
|
|
int cnt = 0;
|
| 1455 |
|
|
|
| 1456 |
|
|
do {
|
| 1457 |
|
|
ch = inb(info->base + UART_RX);
|
| 1458 |
|
|
if (*status & info->ignore_status_mask) {
|
| 1459 |
|
|
if (++ignored > 100)
|
| 1460 |
|
|
break;
|
| 1461 |
|
|
} else {
|
| 1462 |
|
|
if (tty->flip.count >= TTY_FLIPBUF_SIZE)
|
| 1463 |
|
|
break;
|
| 1464 |
|
|
tty->flip.count++;
|
| 1465 |
|
|
if (*status & UART_LSR_SPECIAL) {
|
| 1466 |
|
|
if (*status & UART_LSR_BI) {
|
| 1467 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
|
| 1468 |
|
|
if (info->flags & ASYNC_SAK)
|
| 1469 |
|
|
do_SAK(tty);
|
| 1470 |
|
|
} else if (*status & UART_LSR_PE) {
|
| 1471 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_PARITY;
|
| 1472 |
|
|
} else if (*status & UART_LSR_FE) {
|
| 1473 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_FRAME;
|
| 1474 |
|
|
} else if (*status & UART_LSR_OE) {
|
| 1475 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
|
| 1476 |
|
|
} else
|
| 1477 |
|
|
*tty->flip.flag_buf_ptr++ = 0;
|
| 1478 |
|
|
} else
|
| 1479 |
|
|
*tty->flip.flag_buf_ptr++ = 0;
|
| 1480 |
|
|
*tty->flip.char_buf_ptr++ = ch;
|
| 1481 |
|
|
cnt++;
|
| 1482 |
|
|
}
|
| 1483 |
|
|
*status = inb(info->base + UART_LSR) & info->read_status_mask;
|
| 1484 |
|
|
} while (*status & UART_LSR_DR);
|
| 1485 |
|
|
mxvar_log.rxcnt[info->port] += cnt;
|
| 1486 |
|
|
queue_task(&tty->flip.tqueue, &tq_timer);
|
| 1487 |
|
|
|
| 1488 |
|
|
}
|
| 1489 |
|
|
|
| 1490 |
|
|
static inline void mxser_transmit_chars(struct mxser_struct *info)
|
| 1491 |
|
|
{
|
| 1492 |
|
|
int count, cnt;
|
| 1493 |
|
|
|
| 1494 |
|
|
if (info->x_char) {
|
| 1495 |
|
|
outb(info->x_char, info->base + UART_TX);
|
| 1496 |
|
|
info->x_char = 0;
|
| 1497 |
|
|
mxvar_log.txcnt[info->port]++;
|
| 1498 |
|
|
return;
|
| 1499 |
|
|
}
|
| 1500 |
|
|
if ((info->xmit_cnt <= 0) || info->tty->stopped ||
|
| 1501 |
|
|
info->tty->hw_stopped) {
|
| 1502 |
|
|
info->IER &= ~UART_IER_THRI;
|
| 1503 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1504 |
|
|
return;
|
| 1505 |
|
|
}
|
| 1506 |
|
|
cnt = info->xmit_cnt;
|
| 1507 |
|
|
count = info->xmit_fifo_size;
|
| 1508 |
|
|
do {
|
| 1509 |
|
|
outb(info->xmit_buf[info->xmit_tail++], info->base + UART_TX);
|
| 1510 |
|
|
info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE - 1);
|
| 1511 |
|
|
if (--info->xmit_cnt <= 0)
|
| 1512 |
|
|
break;
|
| 1513 |
|
|
} while (--count > 0);
|
| 1514 |
|
|
mxvar_log.txcnt[info->port] += (cnt - info->xmit_cnt);
|
| 1515 |
|
|
|
| 1516 |
|
|
if (info->xmit_cnt < WAKEUP_CHARS) {
|
| 1517 |
|
|
set_bit(MXSER_EVENT_TXLOW, &info->event);
|
| 1518 |
|
|
MOD_INC_USE_COUNT;
|
| 1519 |
|
|
if (schedule_task(&info->tqueue) == 0)
|
| 1520 |
|
|
MOD_DEC_USE_COUNT;
|
| 1521 |
|
|
}
|
| 1522 |
|
|
if (info->xmit_cnt <= 0) {
|
| 1523 |
|
|
info->IER &= ~UART_IER_THRI;
|
| 1524 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1525 |
|
|
}
|
| 1526 |
|
|
}
|
| 1527 |
|
|
|
| 1528 |
|
|
static inline void mxser_check_modem_status(struct mxser_struct *info,
|
| 1529 |
|
|
int status)
|
| 1530 |
|
|
{
|
| 1531 |
|
|
|
| 1532 |
|
|
/* update input line counters */
|
| 1533 |
|
|
if (status & UART_MSR_TERI)
|
| 1534 |
|
|
info->icount.rng++;
|
| 1535 |
|
|
if (status & UART_MSR_DDSR)
|
| 1536 |
|
|
info->icount.dsr++;
|
| 1537 |
|
|
if (status & UART_MSR_DDCD)
|
| 1538 |
|
|
info->icount.dcd++;
|
| 1539 |
|
|
if (status & UART_MSR_DCTS)
|
| 1540 |
|
|
info->icount.cts++;
|
| 1541 |
|
|
wake_up_interruptible(&info->delta_msr_wait);
|
| 1542 |
|
|
|
| 1543 |
|
|
if ((info->flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
|
| 1544 |
|
|
if (status & UART_MSR_DCD)
|
| 1545 |
|
|
wake_up_interruptible(&info->open_wait);
|
| 1546 |
|
|
else if (!((info->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 1547 |
|
|
(info->flags & ASYNC_CALLOUT_NOHUP)))
|
| 1548 |
|
|
set_bit(MXSER_EVENT_HANGUP, &info->event);
|
| 1549 |
|
|
MOD_INC_USE_COUNT;
|
| 1550 |
|
|
if (schedule_task(&info->tqueue) == 0)
|
| 1551 |
|
|
MOD_DEC_USE_COUNT;
|
| 1552 |
|
|
}
|
| 1553 |
|
|
if (info->flags & ASYNC_CTS_FLOW) {
|
| 1554 |
|
|
if (info->tty->hw_stopped) {
|
| 1555 |
|
|
if (status & UART_MSR_CTS) {
|
| 1556 |
|
|
info->tty->hw_stopped = 0;
|
| 1557 |
|
|
info->IER |= UART_IER_THRI;
|
| 1558 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1559 |
|
|
|
| 1560 |
|
|
set_bit(MXSER_EVENT_TXLOW, &info->event);
|
| 1561 |
|
|
MOD_INC_USE_COUNT;
|
| 1562 |
|
|
if (schedule_task(&info->tqueue) == 0)
|
| 1563 |
|
|
MOD_DEC_USE_COUNT;
|
| 1564 |
|
|
}
|
| 1565 |
|
|
} else {
|
| 1566 |
|
|
if (!(status & UART_MSR_CTS)) {
|
| 1567 |
|
|
info->tty->hw_stopped = 1;
|
| 1568 |
|
|
info->IER &= ~UART_IER_THRI;
|
| 1569 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 1570 |
|
|
}
|
| 1571 |
|
|
}
|
| 1572 |
|
|
}
|
| 1573 |
|
|
}
|
| 1574 |
|
|
|
| 1575 |
|
|
static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
|
| 1576 |
|
|
struct mxser_struct *info)
|
| 1577 |
|
|
{
|
| 1578 |
|
|
DECLARE_WAITQUEUE(wait, current);
|
| 1579 |
|
|
unsigned long flags;
|
| 1580 |
|
|
int retval;
|
| 1581 |
|
|
int do_clocal = 0;
|
| 1582 |
|
|
|
| 1583 |
|
|
/*
|
| 1584 |
|
|
* If the device is in the middle of being closed, then block
|
| 1585 |
|
|
* until it's done, and then try again.
|
| 1586 |
|
|
*/
|
| 1587 |
|
|
if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) {
|
| 1588 |
|
|
if (info->flags & ASYNC_CLOSING)
|
| 1589 |
|
|
interruptible_sleep_on(&info->close_wait);
|
| 1590 |
|
|
#ifdef SERIAL_DO_RESTART
|
| 1591 |
|
|
if (info->flags & ASYNC_HUP_NOTIFY)
|
| 1592 |
|
|
return (-EAGAIN);
|
| 1593 |
|
|
else
|
| 1594 |
|
|
return (-ERESTARTSYS);
|
| 1595 |
|
|
#else
|
| 1596 |
|
|
return (-EAGAIN);
|
| 1597 |
|
|
#endif
|
| 1598 |
|
|
}
|
| 1599 |
|
|
/*
|
| 1600 |
|
|
* If this is a callout device, then just make sure the normal
|
| 1601 |
|
|
* device isn't being used.
|
| 1602 |
|
|
*/
|
| 1603 |
|
|
if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
|
| 1604 |
|
|
if (info->flags & ASYNC_NORMAL_ACTIVE)
|
| 1605 |
|
|
return (-EBUSY);
|
| 1606 |
|
|
if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 1607 |
|
|
(info->flags & ASYNC_SESSION_LOCKOUT) &&
|
| 1608 |
|
|
(info->session != current->session))
|
| 1609 |
|
|
return (-EBUSY);
|
| 1610 |
|
|
if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 1611 |
|
|
(info->flags & ASYNC_PGRP_LOCKOUT) &&
|
| 1612 |
|
|
(info->pgrp != current->pgrp))
|
| 1613 |
|
|
return (-EBUSY);
|
| 1614 |
|
|
info->flags |= ASYNC_CALLOUT_ACTIVE;
|
| 1615 |
|
|
return (0);
|
| 1616 |
|
|
}
|
| 1617 |
|
|
/*
|
| 1618 |
|
|
* If non-blocking mode is set, or the port is not enabled,
|
| 1619 |
|
|
* then make the check up front and then exit.
|
| 1620 |
|
|
*/
|
| 1621 |
|
|
if ((filp->f_flags & O_NONBLOCK) ||
|
| 1622 |
|
|
(tty->flags & (1 << TTY_IO_ERROR))) {
|
| 1623 |
|
|
if (info->flags & ASYNC_CALLOUT_ACTIVE)
|
| 1624 |
|
|
return (-EBUSY);
|
| 1625 |
|
|
info->flags |= ASYNC_NORMAL_ACTIVE;
|
| 1626 |
|
|
return (0);
|
| 1627 |
|
|
}
|
| 1628 |
|
|
if (info->flags & ASYNC_CALLOUT_ACTIVE) {
|
| 1629 |
|
|
if (info->normal_termios.c_cflag & CLOCAL)
|
| 1630 |
|
|
do_clocal = 1;
|
| 1631 |
|
|
} else {
|
| 1632 |
|
|
if (tty->termios->c_cflag & CLOCAL)
|
| 1633 |
|
|
do_clocal = 1;
|
| 1634 |
|
|
}
|
| 1635 |
|
|
|
| 1636 |
|
|
/*
|
| 1637 |
|
|
* Block waiting for the carrier detect and the line to become
|
| 1638 |
|
|
* free (i.e., not in use by the callout). While we are in
|
| 1639 |
|
|
* this loop, info->count is dropped by one, so that
|
| 1640 |
|
|
* mxser_close() knows when to free things. We restore it upon
|
| 1641 |
|
|
* exit, either normal or abnormal.
|
| 1642 |
|
|
*/
|
| 1643 |
|
|
retval = 0;
|
| 1644 |
|
|
add_wait_queue(&info->open_wait, &wait);
|
| 1645 |
|
|
save_flags(flags);
|
| 1646 |
|
|
cli();
|
| 1647 |
|
|
if (!tty_hung_up_p(filp))
|
| 1648 |
|
|
info->count--;
|
| 1649 |
|
|
restore_flags(flags);
|
| 1650 |
|
|
info->blocked_open++;
|
| 1651 |
|
|
while (1) {
|
| 1652 |
|
|
save_flags(flags);
|
| 1653 |
|
|
cli();
|
| 1654 |
|
|
if (!(info->flags & ASYNC_CALLOUT_ACTIVE))
|
| 1655 |
|
|
outb(inb(info->base + UART_MCR) | UART_MCR_DTR | UART_MCR_RTS,
|
| 1656 |
|
|
info->base + UART_MCR);
|
| 1657 |
|
|
restore_flags(flags);
|
| 1658 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 1659 |
|
|
if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)) {
|
| 1660 |
|
|
#ifdef SERIAL_DO_RESTART
|
| 1661 |
|
|
if (info->flags & ASYNC_HUP_NOTIFY)
|
| 1662 |
|
|
retval = -EAGAIN;
|
| 1663 |
|
|
else
|
| 1664 |
|
|
retval = -ERESTARTSYS;
|
| 1665 |
|
|
#else
|
| 1666 |
|
|
retval = -EAGAIN;
|
| 1667 |
|
|
#endif
|
| 1668 |
|
|
break;
|
| 1669 |
|
|
}
|
| 1670 |
|
|
if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 1671 |
|
|
!(info->flags & ASYNC_CLOSING) &&
|
| 1672 |
|
|
(do_clocal || (inb(info->base + UART_MSR) & UART_MSR_DCD)))
|
| 1673 |
|
|
break;
|
| 1674 |
|
|
if (signal_pending(current)) {
|
| 1675 |
|
|
retval = -ERESTARTSYS;
|
| 1676 |
|
|
break;
|
| 1677 |
|
|
}
|
| 1678 |
|
|
schedule();
|
| 1679 |
|
|
}
|
| 1680 |
|
|
set_current_state(TASK_RUNNING);
|
| 1681 |
|
|
remove_wait_queue(&info->open_wait, &wait);
|
| 1682 |
|
|
if (!tty_hung_up_p(filp))
|
| 1683 |
|
|
info->count++;
|
| 1684 |
|
|
info->blocked_open--;
|
| 1685 |
|
|
if (retval)
|
| 1686 |
|
|
return (retval);
|
| 1687 |
|
|
info->flags |= ASYNC_NORMAL_ACTIVE;
|
| 1688 |
|
|
return (0);
|
| 1689 |
|
|
}
|
| 1690 |
|
|
|
| 1691 |
|
|
static int mxser_startup(struct mxser_struct *info)
|
| 1692 |
|
|
{
|
| 1693 |
|
|
unsigned long flags;
|
| 1694 |
|
|
unsigned long page;
|
| 1695 |
|
|
|
| 1696 |
|
|
page = get_free_page(GFP_KERNEL);
|
| 1697 |
|
|
if (!page)
|
| 1698 |
|
|
return (-ENOMEM);
|
| 1699 |
|
|
|
| 1700 |
|
|
save_flags(flags);
|
| 1701 |
|
|
cli();
|
| 1702 |
|
|
|
| 1703 |
|
|
if (info->flags & ASYNC_INITIALIZED) {
|
| 1704 |
|
|
free_page(page);
|
| 1705 |
|
|
restore_flags(flags);
|
| 1706 |
|
|
return (0);
|
| 1707 |
|
|
}
|
| 1708 |
|
|
if (!info->base || !info->type) {
|
| 1709 |
|
|
if (info->tty)
|
| 1710 |
|
|
set_bit(TTY_IO_ERROR, &info->tty->flags);
|
| 1711 |
|
|
free_page(page);
|
| 1712 |
|
|
restore_flags(flags);
|
| 1713 |
|
|
return (0);
|
| 1714 |
|
|
}
|
| 1715 |
|
|
if (info->xmit_buf)
|
| 1716 |
|
|
free_page(page);
|
| 1717 |
|
|
else
|
| 1718 |
|
|
info->xmit_buf = (unsigned char *) page;
|
| 1719 |
|
|
|
| 1720 |
|
|
/*
|
| 1721 |
|
|
* Clear the FIFO buffers and disable them
|
| 1722 |
|
|
* (they will be reenabled in mxser_change_speed())
|
| 1723 |
|
|
*/
|
| 1724 |
|
|
if (info->xmit_fifo_size == 16)
|
| 1725 |
|
|
outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT),
|
| 1726 |
|
|
info->base + UART_FCR);
|
| 1727 |
|
|
|
| 1728 |
|
|
/*
|
| 1729 |
|
|
* At this point there's no way the LSR could still be 0xFF;
|
| 1730 |
|
|
* if it is, then bail out, because there's likely no UART
|
| 1731 |
|
|
* here.
|
| 1732 |
|
|
*/
|
| 1733 |
|
|
if (inb(info->base + UART_LSR) == 0xff) {
|
| 1734 |
|
|
restore_flags(flags);
|
| 1735 |
|
|
if (capable(CAP_SYS_ADMIN)) {
|
| 1736 |
|
|
if (info->tty)
|
| 1737 |
|
|
set_bit(TTY_IO_ERROR, &info->tty->flags);
|
| 1738 |
|
|
return (0);
|
| 1739 |
|
|
} else
|
| 1740 |
|
|
return (-ENODEV);
|
| 1741 |
|
|
}
|
| 1742 |
|
|
/*
|
| 1743 |
|
|
* Clear the interrupt registers.
|
| 1744 |
|
|
*/
|
| 1745 |
|
|
(void) inb(info->base + UART_LSR);
|
| 1746 |
|
|
(void) inb(info->base + UART_RX);
|
| 1747 |
|
|
(void) inb(info->base + UART_IIR);
|
| 1748 |
|
|
(void) inb(info->base + UART_MSR);
|
| 1749 |
|
|
|
| 1750 |
|
|
/*
|
| 1751 |
|
|
* Now, initialize the UART
|
| 1752 |
|
|
*/
|
| 1753 |
|
|
outb(UART_LCR_WLEN8, info->base + UART_LCR); /* reset DLAB */
|
| 1754 |
|
|
info->MCR = UART_MCR_DTR | UART_MCR_RTS;
|
| 1755 |
|
|
outb(info->MCR, info->base + UART_MCR);
|
| 1756 |
|
|
|
| 1757 |
|
|
/*
|
| 1758 |
|
|
* Finally, enable interrupts
|
| 1759 |
|
|
*/
|
| 1760 |
|
|
info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
|
| 1761 |
|
|
outb(info->IER, info->base + UART_IER); /* enable interrupts */
|
| 1762 |
|
|
|
| 1763 |
|
|
/*
|
| 1764 |
|
|
* And clear the interrupt registers again for luck.
|
| 1765 |
|
|
*/
|
| 1766 |
|
|
(void) inb(info->base + UART_LSR);
|
| 1767 |
|
|
(void) inb(info->base + UART_RX);
|
| 1768 |
|
|
(void) inb(info->base + UART_IIR);
|
| 1769 |
|
|
(void) inb(info->base + UART_MSR);
|
| 1770 |
|
|
|
| 1771 |
|
|
if (info->tty)
|
| 1772 |
|
|
test_and_clear_bit(TTY_IO_ERROR, &info->tty->flags);
|
| 1773 |
|
|
|
| 1774 |
|
|
info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
|
| 1775 |
|
|
|
| 1776 |
|
|
/*
|
| 1777 |
|
|
* and set the speed of the serial port
|
| 1778 |
|
|
*/
|
| 1779 |
|
|
mxser_change_speed(info, 0);
|
| 1780 |
|
|
|
| 1781 |
|
|
info->flags |= ASYNC_INITIALIZED;
|
| 1782 |
|
|
restore_flags(flags);
|
| 1783 |
|
|
return (0);
|
| 1784 |
|
|
}
|
| 1785 |
|
|
|
| 1786 |
|
|
/*
|
| 1787 |
|
|
* This routine will shutdown a serial port; interrupts maybe disabled, and
|
| 1788 |
|
|
* DTR is dropped if the hangup on close termio flag is on.
|
| 1789 |
|
|
*/
|
| 1790 |
|
|
static void mxser_shutdown(struct mxser_struct *info)
|
| 1791 |
|
|
{
|
| 1792 |
|
|
unsigned long flags;
|
| 1793 |
|
|
|
| 1794 |
|
|
if (!(info->flags & ASYNC_INITIALIZED))
|
| 1795 |
|
|
return;
|
| 1796 |
|
|
|
| 1797 |
|
|
save_flags(flags);
|
| 1798 |
|
|
cli(); /* Disable interrupts */
|
| 1799 |
|
|
|
| 1800 |
|
|
/*
|
| 1801 |
|
|
* clear delta_msr_wait queue to avoid mem leaks: we may free the irq
|
| 1802 |
|
|
* here so the queue might never be waken up
|
| 1803 |
|
|
*/
|
| 1804 |
|
|
wake_up_interruptible(&info->delta_msr_wait);
|
| 1805 |
|
|
|
| 1806 |
|
|
/*
|
| 1807 |
|
|
* Free the IRQ, if necessary
|
| 1808 |
|
|
*/
|
| 1809 |
|
|
if (info->xmit_buf) {
|
| 1810 |
|
|
free_page((unsigned long) info->xmit_buf);
|
| 1811 |
|
|
info->xmit_buf = 0;
|
| 1812 |
|
|
}
|
| 1813 |
|
|
info->IER = 0;
|
| 1814 |
|
|
outb(0x00, info->base + UART_IER); /* disable all intrs */
|
| 1815 |
|
|
|
| 1816 |
|
|
if (!info->tty || (info->tty->termios->c_cflag & HUPCL))
|
| 1817 |
|
|
info->MCR &= ~(UART_MCR_DTR | UART_MCR_RTS);
|
| 1818 |
|
|
outb(info->MCR, info->base + UART_MCR);
|
| 1819 |
|
|
|
| 1820 |
|
|
/* clear Rx/Tx FIFO's */
|
| 1821 |
|
|
outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), info->base + UART_FCR);
|
| 1822 |
|
|
/* read data port to reset things */
|
| 1823 |
|
|
(void) inb(info->base + UART_RX);
|
| 1824 |
|
|
|
| 1825 |
|
|
if (info->tty)
|
| 1826 |
|
|
set_bit(TTY_IO_ERROR, &info->tty->flags);
|
| 1827 |
|
|
|
| 1828 |
|
|
info->flags &= ~ASYNC_INITIALIZED;
|
| 1829 |
|
|
restore_flags(flags);
|
| 1830 |
|
|
}
|
| 1831 |
|
|
|
| 1832 |
|
|
/*
|
| 1833 |
|
|
* This routine is called to set the UART divisor registers to match
|
| 1834 |
|
|
* the specified baud rate for a serial port.
|
| 1835 |
|
|
*/
|
| 1836 |
|
|
static int mxser_change_speed(struct mxser_struct *info,
|
| 1837 |
|
|
struct termios *old_termios)
|
| 1838 |
|
|
{
|
| 1839 |
|
|
int quot = 0;
|
| 1840 |
|
|
unsigned cflag, cval, fcr;
|
| 1841 |
|
|
int i;
|
| 1842 |
|
|
int ret = 0;
|
| 1843 |
|
|
unsigned long flags;
|
| 1844 |
|
|
|
| 1845 |
|
|
if (!info->tty || !info->tty->termios)
|
| 1846 |
|
|
return ret;
|
| 1847 |
|
|
cflag = info->tty->termios->c_cflag;
|
| 1848 |
|
|
if (!(info->base))
|
| 1849 |
|
|
return ret;
|
| 1850 |
|
|
|
| 1851 |
|
|
#ifndef B921600
|
| 1852 |
|
|
#define B921600 (B460800 +1)
|
| 1853 |
|
|
#endif
|
| 1854 |
|
|
switch (cflag & (CBAUD | CBAUDEX)) {
|
| 1855 |
|
|
case B921600:
|
| 1856 |
|
|
i = 20;
|
| 1857 |
|
|
break;
|
| 1858 |
|
|
case B460800:
|
| 1859 |
|
|
i = 19;
|
| 1860 |
|
|
break;
|
| 1861 |
|
|
case B230400:
|
| 1862 |
|
|
i = 18;
|
| 1863 |
|
|
break;
|
| 1864 |
|
|
case B115200:
|
| 1865 |
|
|
i = 17;
|
| 1866 |
|
|
break;
|
| 1867 |
|
|
case B57600:
|
| 1868 |
|
|
i = 16;
|
| 1869 |
|
|
break;
|
| 1870 |
|
|
case B38400:
|
| 1871 |
|
|
i = 15;
|
| 1872 |
|
|
break;
|
| 1873 |
|
|
case B19200:
|
| 1874 |
|
|
i = 14;
|
| 1875 |
|
|
break;
|
| 1876 |
|
|
case B9600:
|
| 1877 |
|
|
i = 13;
|
| 1878 |
|
|
break;
|
| 1879 |
|
|
case B4800:
|
| 1880 |
|
|
i = 12;
|
| 1881 |
|
|
break;
|
| 1882 |
|
|
case B2400:
|
| 1883 |
|
|
i = 11;
|
| 1884 |
|
|
break;
|
| 1885 |
|
|
case B1800:
|
| 1886 |
|
|
i = 10;
|
| 1887 |
|
|
break;
|
| 1888 |
|
|
case B1200:
|
| 1889 |
|
|
i = 9;
|
| 1890 |
|
|
break;
|
| 1891 |
|
|
case B600:
|
| 1892 |
|
|
i = 8;
|
| 1893 |
|
|
break;
|
| 1894 |
|
|
case B300:
|
| 1895 |
|
|
i = 7;
|
| 1896 |
|
|
break;
|
| 1897 |
|
|
case B200:
|
| 1898 |
|
|
i = 6;
|
| 1899 |
|
|
break;
|
| 1900 |
|
|
case B150:
|
| 1901 |
|
|
i = 5;
|
| 1902 |
|
|
break;
|
| 1903 |
|
|
case B134:
|
| 1904 |
|
|
i = 4;
|
| 1905 |
|
|
break;
|
| 1906 |
|
|
case B110:
|
| 1907 |
|
|
i = 3;
|
| 1908 |
|
|
break;
|
| 1909 |
|
|
case B75:
|
| 1910 |
|
|
i = 2;
|
| 1911 |
|
|
break;
|
| 1912 |
|
|
case B50:
|
| 1913 |
|
|
i = 1;
|
| 1914 |
|
|
break;
|
| 1915 |
|
|
default:
|
| 1916 |
|
|
i = 0;
|
| 1917 |
|
|
break;
|
| 1918 |
|
|
}
|
| 1919 |
|
|
|
| 1920 |
|
|
if (i == 15) {
|
| 1921 |
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
|
| 1922 |
|
|
i = 16; /* 57600 bps */
|
| 1923 |
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
|
| 1924 |
|
|
i = 17; /* 115200 bps */
|
| 1925 |
|
|
|
| 1926 |
|
|
#ifdef ASYNC_SPD_SHI
|
| 1927 |
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
|
| 1928 |
|
|
i = 18;
|
| 1929 |
|
|
#endif
|
| 1930 |
|
|
|
| 1931 |
|
|
#ifdef ASYNC_SPD_WARP
|
| 1932 |
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
|
| 1933 |
|
|
i = 19;
|
| 1934 |
|
|
#endif
|
| 1935 |
|
|
}
|
| 1936 |
|
|
if (mxvar_baud_table[i] == 134) {
|
| 1937 |
|
|
quot = (2 * info->baud_base / 269);
|
| 1938 |
|
|
} else if (mxvar_baud_table[i]) {
|
| 1939 |
|
|
quot = info->baud_base / mxvar_baud_table[i];
|
| 1940 |
|
|
if (!quot && old_termios) {
|
| 1941 |
|
|
/* re-calculate */
|
| 1942 |
|
|
info->tty->termios->c_cflag &= ~CBAUD;
|
| 1943 |
|
|
info->tty->termios->c_cflag |= (old_termios->c_cflag & CBAUD);
|
| 1944 |
|
|
switch (info->tty->termios->c_cflag & (CBAUD | CBAUDEX)) {
|
| 1945 |
|
|
case B921600:
|
| 1946 |
|
|
i = 20;
|
| 1947 |
|
|
break;
|
| 1948 |
|
|
case B460800:
|
| 1949 |
|
|
i = 19;
|
| 1950 |
|
|
break;
|
| 1951 |
|
|
case B230400:
|
| 1952 |
|
|
i = 18;
|
| 1953 |
|
|
break;
|
| 1954 |
|
|
case B115200:
|
| 1955 |
|
|
i = 17;
|
| 1956 |
|
|
break;
|
| 1957 |
|
|
case B57600:
|
| 1958 |
|
|
i = 16;
|
| 1959 |
|
|
break;
|
| 1960 |
|
|
case B38400:
|
| 1961 |
|
|
i = 15;
|
| 1962 |
|
|
break;
|
| 1963 |
|
|
case B19200:
|
| 1964 |
|
|
i = 14;
|
| 1965 |
|
|
break;
|
| 1966 |
|
|
case B9600:
|
| 1967 |
|
|
i = 13;
|
| 1968 |
|
|
break;
|
| 1969 |
|
|
case B4800:
|
| 1970 |
|
|
i = 12;
|
| 1971 |
|
|
break;
|
| 1972 |
|
|
case B2400:
|
| 1973 |
|
|
i = 11;
|
| 1974 |
|
|
break;
|
| 1975 |
|
|
case B1800:
|
| 1976 |
|
|
i = 10;
|
| 1977 |
|
|
break;
|
| 1978 |
|
|
case B1200:
|
| 1979 |
|
|
i = 9;
|
| 1980 |
|
|
break;
|
| 1981 |
|
|
case B600:
|
| 1982 |
|
|
i = 8;
|
| 1983 |
|
|
break;
|
| 1984 |
|
|
case B300:
|
| 1985 |
|
|
i = 7;
|
| 1986 |
|
|
break;
|
| 1987 |
|
|
case B200:
|
| 1988 |
|
|
i = 6;
|
| 1989 |
|
|
break;
|
| 1990 |
|
|
case B150:
|
| 1991 |
|
|
i = 5;
|
| 1992 |
|
|
break;
|
| 1993 |
|
|
case B134:
|
| 1994 |
|
|
i = 4;
|
| 1995 |
|
|
break;
|
| 1996 |
|
|
case B110:
|
| 1997 |
|
|
i = 3;
|
| 1998 |
|
|
break;
|
| 1999 |
|
|
case B75:
|
| 2000 |
|
|
i = 2;
|
| 2001 |
|
|
break;
|
| 2002 |
|
|
case B50:
|
| 2003 |
|
|
i = 1;
|
| 2004 |
|
|
break;
|
| 2005 |
|
|
default:
|
| 2006 |
|
|
i = 0;
|
| 2007 |
|
|
break;
|
| 2008 |
|
|
}
|
| 2009 |
|
|
if (i == 15) {
|
| 2010 |
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
|
| 2011 |
|
|
i = 16; /* 57600 bps */
|
| 2012 |
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
|
| 2013 |
|
|
i = 17; /* 115200 bps */
|
| 2014 |
|
|
#ifdef ASYNC_SPD_SHI
|
| 2015 |
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
|
| 2016 |
|
|
i = 18;
|
| 2017 |
|
|
#endif
|
| 2018 |
|
|
#ifdef ASYNC_SPD_WARP
|
| 2019 |
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
|
| 2020 |
|
|
i = 19;
|
| 2021 |
|
|
#endif
|
| 2022 |
|
|
}
|
| 2023 |
|
|
if (mxvar_baud_table[i] == 134) {
|
| 2024 |
|
|
quot = (2 * info->baud_base / 269);
|
| 2025 |
|
|
} else if (mxvar_baud_table[i]) {
|
| 2026 |
|
|
quot = info->baud_base / mxvar_baud_table[i];
|
| 2027 |
|
|
if (quot == 0)
|
| 2028 |
|
|
quot = 1;
|
| 2029 |
|
|
} else {
|
| 2030 |
|
|
quot = 0;
|
| 2031 |
|
|
}
|
| 2032 |
|
|
} else if (quot == 0)
|
| 2033 |
|
|
quot = 1;
|
| 2034 |
|
|
} else {
|
| 2035 |
|
|
quot = 0;
|
| 2036 |
|
|
}
|
| 2037 |
|
|
|
| 2038 |
|
|
if (quot) {
|
| 2039 |
|
|
info->MCR |= UART_MCR_DTR;
|
| 2040 |
|
|
save_flags(flags);
|
| 2041 |
|
|
cli();
|
| 2042 |
|
|
outb(info->MCR, info->base + UART_MCR);
|
| 2043 |
|
|
restore_flags(flags);
|
| 2044 |
|
|
} else {
|
| 2045 |
|
|
info->MCR &= ~UART_MCR_DTR;
|
| 2046 |
|
|
save_flags(flags);
|
| 2047 |
|
|
cli();
|
| 2048 |
|
|
outb(info->MCR, info->base + UART_MCR);
|
| 2049 |
|
|
restore_flags(flags);
|
| 2050 |
|
|
return ret;
|
| 2051 |
|
|
}
|
| 2052 |
|
|
/* byte size and parity */
|
| 2053 |
|
|
switch (cflag & CSIZE) {
|
| 2054 |
|
|
case CS5:
|
| 2055 |
|
|
cval = 0x00;
|
| 2056 |
|
|
break;
|
| 2057 |
|
|
case CS6:
|
| 2058 |
|
|
cval = 0x01;
|
| 2059 |
|
|
break;
|
| 2060 |
|
|
case CS7:
|
| 2061 |
|
|
cval = 0x02;
|
| 2062 |
|
|
break;
|
| 2063 |
|
|
case CS8:
|
| 2064 |
|
|
cval = 0x03;
|
| 2065 |
|
|
break;
|
| 2066 |
|
|
default:
|
| 2067 |
|
|
cval = 0x00;
|
| 2068 |
|
|
break; /* too keep GCC shut... */
|
| 2069 |
|
|
}
|
| 2070 |
|
|
if (cflag & CSTOPB)
|
| 2071 |
|
|
cval |= 0x04;
|
| 2072 |
|
|
if (cflag & PARENB)
|
| 2073 |
|
|
cval |= UART_LCR_PARITY;
|
| 2074 |
|
|
if (!(cflag & PARODD))
|
| 2075 |
|
|
cval |= UART_LCR_EPAR;
|
| 2076 |
|
|
if ((info->type == PORT_8250) || (info->type == PORT_16450)) {
|
| 2077 |
|
|
fcr = 0;
|
| 2078 |
|
|
} else {
|
| 2079 |
|
|
fcr = UART_FCR_ENABLE_FIFO;
|
| 2080 |
|
|
switch (info->rx_trigger) {
|
| 2081 |
|
|
case 1:
|
| 2082 |
|
|
fcr |= UART_FCR_TRIGGER_1;
|
| 2083 |
|
|
break;
|
| 2084 |
|
|
case 4:
|
| 2085 |
|
|
fcr |= UART_FCR_TRIGGER_4;
|
| 2086 |
|
|
break;
|
| 2087 |
|
|
case 8:
|
| 2088 |
|
|
fcr |= UART_FCR_TRIGGER_8;
|
| 2089 |
|
|
break;
|
| 2090 |
|
|
default:
|
| 2091 |
|
|
fcr |= UART_FCR_TRIGGER_14;
|
| 2092 |
|
|
}
|
| 2093 |
|
|
}
|
| 2094 |
|
|
|
| 2095 |
|
|
/* CTS flow control flag and modem status interrupts */
|
| 2096 |
|
|
info->IER &= ~UART_IER_MSI;
|
| 2097 |
|
|
info->MCR &= ~UART_MCR_AFE;
|
| 2098 |
|
|
if (cflag & CRTSCTS) {
|
| 2099 |
|
|
info->flags |= ASYNC_CTS_FLOW;
|
| 2100 |
|
|
info->IER |= UART_IER_MSI;
|
| 2101 |
|
|
if (info->type == PORT_16550A)
|
| 2102 |
|
|
info->MCR |= UART_MCR_AFE;
|
| 2103 |
|
|
} else {
|
| 2104 |
|
|
info->flags &= ~ASYNC_CTS_FLOW;
|
| 2105 |
|
|
}
|
| 2106 |
|
|
outb(info->MCR, info->base + UART_MCR);
|
| 2107 |
|
|
if (cflag & CLOCAL)
|
| 2108 |
|
|
info->flags &= ~ASYNC_CHECK_CD;
|
| 2109 |
|
|
else {
|
| 2110 |
|
|
info->flags |= ASYNC_CHECK_CD;
|
| 2111 |
|
|
info->IER |= UART_IER_MSI;
|
| 2112 |
|
|
}
|
| 2113 |
|
|
outb(info->IER, info->base + UART_IER);
|
| 2114 |
|
|
|
| 2115 |
|
|
/*
|
| 2116 |
|
|
* Set up parity check flag
|
| 2117 |
|
|
*/
|
| 2118 |
|
|
info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
|
| 2119 |
|
|
if (I_INPCK(info->tty))
|
| 2120 |
|
|
info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
|
| 2121 |
|
|
if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
|
| 2122 |
|
|
info->read_status_mask |= UART_LSR_BI;
|
| 2123 |
|
|
|
| 2124 |
|
|
info->ignore_status_mask = 0;
|
| 2125 |
|
|
#if 0
|
| 2126 |
|
|
/* This should be safe, but for some broken bits of hardware... */
|
| 2127 |
|
|
if (I_IGNPAR(info->tty)) {
|
| 2128 |
|
|
info->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
|
| 2129 |
|
|
info->read_status_mask |= UART_LSR_PE | UART_LSR_FE;
|
| 2130 |
|
|
}
|
| 2131 |
|
|
#endif
|
| 2132 |
|
|
if (I_IGNBRK(info->tty)) {
|
| 2133 |
|
|
info->ignore_status_mask |= UART_LSR_BI;
|
| 2134 |
|
|
info->read_status_mask |= UART_LSR_BI;
|
| 2135 |
|
|
/*
|
| 2136 |
|
|
* If we're ignore parity and break indicators, ignore
|
| 2137 |
|
|
* overruns too. (For real raw support).
|
| 2138 |
|
|
*/
|
| 2139 |
|
|
if (I_IGNPAR(info->tty)) {
|
| 2140 |
|
|
info->ignore_status_mask |= UART_LSR_OE | UART_LSR_PE | UART_LSR_FE;
|
| 2141 |
|
|
info->read_status_mask |= UART_LSR_OE | UART_LSR_PE | UART_LSR_FE;
|
| 2142 |
|
|
}
|
| 2143 |
|
|
}
|
| 2144 |
|
|
save_flags(flags);
|
| 2145 |
|
|
cli();
|
| 2146 |
|
|
outb(cval | UART_LCR_DLAB, info->base + UART_LCR); /* set DLAB */
|
| 2147 |
|
|
outb(quot & 0xff, info->base + UART_DLL); /* LS of divisor */
|
| 2148 |
|
|
outb(quot >> 8, info->base + UART_DLM); /* MS of divisor */
|
| 2149 |
|
|
outb(cval, info->base + UART_LCR); /* reset DLAB */
|
| 2150 |
|
|
outb(fcr, info->base + UART_FCR); /* set fcr */
|
| 2151 |
|
|
restore_flags(flags);
|
| 2152 |
|
|
|
| 2153 |
|
|
return ret;
|
| 2154 |
|
|
}
|
| 2155 |
|
|
|
| 2156 |
|
|
/*
|
| 2157 |
|
|
* ------------------------------------------------------------
|
| 2158 |
|
|
* friends of mxser_ioctl()
|
| 2159 |
|
|
* ------------------------------------------------------------
|
| 2160 |
|
|
*/
|
| 2161 |
|
|
static int mxser_get_serial_info(struct mxser_struct *info,
|
| 2162 |
|
|
struct serial_struct *retinfo)
|
| 2163 |
|
|
{
|
| 2164 |
|
|
struct serial_struct tmp;
|
| 2165 |
|
|
|
| 2166 |
|
|
if (!retinfo)
|
| 2167 |
|
|
return (-EFAULT);
|
| 2168 |
|
|
memset(&tmp, 0, sizeof(tmp));
|
| 2169 |
|
|
tmp.type = info->type;
|
| 2170 |
|
|
tmp.line = info->port;
|
| 2171 |
|
|
tmp.port = info->base;
|
| 2172 |
|
|
tmp.irq = info->irq;
|
| 2173 |
|
|
tmp.flags = info->flags;
|
| 2174 |
|
|
tmp.baud_base = info->baud_base;
|
| 2175 |
|
|
tmp.close_delay = info->close_delay;
|
| 2176 |
|
|
tmp.closing_wait = info->closing_wait;
|
| 2177 |
|
|
tmp.custom_divisor = info->custom_divisor;
|
| 2178 |
|
|
tmp.hub6 = 0;
|
| 2179 |
|
|
return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
|
| 2180 |
|
|
}
|
| 2181 |
|
|
|
| 2182 |
|
|
static int mxser_set_serial_info(struct mxser_struct *info,
|
| 2183 |
|
|
struct serial_struct *new_info)
|
| 2184 |
|
|
{
|
| 2185 |
|
|
struct serial_struct new_serial;
|
| 2186 |
|
|
unsigned int flags;
|
| 2187 |
|
|
int retval = 0;
|
| 2188 |
|
|
|
| 2189 |
|
|
if (!new_info || !info->base)
|
| 2190 |
|
|
return (-EFAULT);
|
| 2191 |
|
|
if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
|
| 2192 |
|
|
return -EFAULT;
|
| 2193 |
|
|
|
| 2194 |
|
|
if ((new_serial.irq != info->irq) ||
|
| 2195 |
|
|
(new_serial.port != info->base) ||
|
| 2196 |
|
|
(new_serial.type != info->type) ||
|
| 2197 |
|
|
(new_serial.custom_divisor != info->custom_divisor) ||
|
| 2198 |
|
|
(new_serial.baud_base != info->baud_base))
|
| 2199 |
|
|
return (-EPERM);
|
| 2200 |
|
|
|
| 2201 |
|
|
flags = info->flags & ASYNC_SPD_MASK;
|
| 2202 |
|
|
|
| 2203 |
|
|
if (!suser()) {
|
| 2204 |
|
|
if ((new_serial.baud_base != info->baud_base) ||
|
| 2205 |
|
|
(new_serial.close_delay != info->close_delay) ||
|
| 2206 |
|
|
((new_serial.flags & ~ASYNC_USR_MASK) !=
|
| 2207 |
|
|
(info->flags & ~ASYNC_USR_MASK)))
|
| 2208 |
|
|
return (-EPERM);
|
| 2209 |
|
|
info->flags = ((info->flags & ~ASYNC_USR_MASK) |
|
| 2210 |
|
|
(new_serial.flags & ASYNC_USR_MASK));
|
| 2211 |
|
|
} else {
|
| 2212 |
|
|
/*
|
| 2213 |
|
|
* OK, past this point, all the error checking has been done.
|
| 2214 |
|
|
* At this point, we start making changes.....
|
| 2215 |
|
|
*/
|
| 2216 |
|
|
info->flags = ((info->flags & ~ASYNC_FLAGS) |
|
| 2217 |
|
|
(new_serial.flags & ASYNC_FLAGS));
|
| 2218 |
|
|
info->close_delay = new_serial.close_delay * HZ / 100;
|
| 2219 |
|
|
info->closing_wait = new_serial.closing_wait * HZ / 100;
|
| 2220 |
|
|
}
|
| 2221 |
|
|
|
| 2222 |
|
|
if (info->flags & ASYNC_INITIALIZED) {
|
| 2223 |
|
|
if (flags != (info->flags & ASYNC_SPD_MASK)) {
|
| 2224 |
|
|
mxser_change_speed(info, 0);
|
| 2225 |
|
|
}
|
| 2226 |
|
|
} else
|
| 2227 |
|
|
retval = mxser_startup(info);
|
| 2228 |
|
|
return (retval);
|
| 2229 |
|
|
}
|
| 2230 |
|
|
|
| 2231 |
|
|
/*
|
| 2232 |
|
|
* mxser_get_lsr_info - get line status register info
|
| 2233 |
|
|
*
|
| 2234 |
|
|
* Purpose: Let user call ioctl() to get info when the UART physically
|
| 2235 |
|
|
* is emptied. On bus types like RS485, the transmitter must
|
| 2236 |
|
|
* release the bus after transmitting. This must be done when
|
| 2237 |
|
|
* the transmit shift register is empty, not be done when the
|
| 2238 |
|
|
* transmit holding register is empty. This functionality
|
| 2239 |
|
|
* allows an RS485 driver to be written in user space.
|
| 2240 |
|
|
*/
|
| 2241 |
|
|
static int mxser_get_lsr_info(struct mxser_struct *info, unsigned int *value)
|
| 2242 |
|
|
{
|
| 2243 |
|
|
unsigned char status;
|
| 2244 |
|
|
unsigned int result;
|
| 2245 |
|
|
unsigned long flags;
|
| 2246 |
|
|
|
| 2247 |
|
|
save_flags(flags);
|
| 2248 |
|
|
cli();
|
| 2249 |
|
|
status = inb(info->base + UART_LSR);
|
| 2250 |
|
|
restore_flags(flags);
|
| 2251 |
|
|
result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
|
| 2252 |
|
|
return put_user(result, value);
|
| 2253 |
|
|
}
|
| 2254 |
|
|
|
| 2255 |
|
|
/*
|
| 2256 |
|
|
* This routine sends a break character out the serial port.
|
| 2257 |
|
|
*/
|
| 2258 |
|
|
static void mxser_send_break(struct mxser_struct *info, int duration)
|
| 2259 |
|
|
{
|
| 2260 |
|
|
unsigned long flags;
|
| 2261 |
|
|
if (!info->base)
|
| 2262 |
|
|
return;
|
| 2263 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
| 2264 |
|
|
save_flags(flags);
|
| 2265 |
|
|
cli();
|
| 2266 |
|
|
outb(inb(info->base + UART_LCR) | UART_LCR_SBC, info->base + UART_LCR);
|
| 2267 |
|
|
schedule_timeout(duration);
|
| 2268 |
|
|
outb(inb(info->base + UART_LCR) & ~UART_LCR_SBC, info->base + UART_LCR);
|
| 2269 |
|
|
restore_flags(flags);
|
| 2270 |
|
|
}
|
| 2271 |
|
|
|
| 2272 |
|
|
static int mxser_get_modem_info(struct mxser_struct *info,
|
| 2273 |
|
|
unsigned int *value)
|
| 2274 |
|
|
{
|
| 2275 |
|
|
unsigned char control, status;
|
| 2276 |
|
|
unsigned int result;
|
| 2277 |
|
|
unsigned long flags;
|
| 2278 |
|
|
|
| 2279 |
|
|
control = info->MCR;
|
| 2280 |
|
|
save_flags(flags);
|
| 2281 |
|
|
cli();
|
| 2282 |
|
|
status = inb(info->base + UART_MSR);
|
| 2283 |
|
|
if (status & UART_MSR_ANY_DELTA)
|
| 2284 |
|
|
mxser_check_modem_status(info, status);
|
| 2285 |
|
|
restore_flags(flags);
|
| 2286 |
|
|
result = ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
|
| 2287 |
|
|
((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
|
| 2288 |
|
|
((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
|
| 2289 |
|
|
((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
|
| 2290 |
|
|
((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
|
| 2291 |
|
|
((status & UART_MSR_CTS) ? TIOCM_CTS : 0);
|
| 2292 |
|
|
return put_user(result, value);
|
| 2293 |
|
|
}
|
| 2294 |
|
|
|
| 2295 |
|
|
static int mxser_set_modem_info(struct mxser_struct *info, unsigned int cmd,
|
| 2296 |
|
|
unsigned int *value)
|
| 2297 |
|
|
{
|
| 2298 |
|
|
unsigned int arg;
|
| 2299 |
|
|
unsigned long flags;
|
| 2300 |
|
|
|
| 2301 |
|
|
if(get_user(arg, value))
|
| 2302 |
|
|
return -EFAULT;
|
| 2303 |
|
|
switch (cmd) {
|
| 2304 |
|
|
case TIOCMBIS:
|
| 2305 |
|
|
if (arg & TIOCM_RTS)
|
| 2306 |
|
|
info->MCR |= UART_MCR_RTS;
|
| 2307 |
|
|
if (arg & TIOCM_DTR)
|
| 2308 |
|
|
info->MCR |= UART_MCR_DTR;
|
| 2309 |
|
|
break;
|
| 2310 |
|
|
case TIOCMBIC:
|
| 2311 |
|
|
if (arg & TIOCM_RTS)
|
| 2312 |
|
|
info->MCR &= ~UART_MCR_RTS;
|
| 2313 |
|
|
if (arg & TIOCM_DTR)
|
| 2314 |
|
|
info->MCR &= ~UART_MCR_DTR;
|
| 2315 |
|
|
break;
|
| 2316 |
|
|
case TIOCMSET:
|
| 2317 |
|
|
info->MCR = ((info->MCR & ~(UART_MCR_RTS | UART_MCR_DTR)) |
|
| 2318 |
|
|
((arg & TIOCM_RTS) ? UART_MCR_RTS : 0) |
|
| 2319 |
|
|
((arg & TIOCM_DTR) ? UART_MCR_DTR : 0));
|
| 2320 |
|
|
break;
|
| 2321 |
|
|
default:
|
| 2322 |
|
|
return (-EINVAL);
|
| 2323 |
|
|
}
|
| 2324 |
|
|
save_flags(flags);
|
| 2325 |
|
|
cli();
|
| 2326 |
|
|
outb(info->MCR, info->base + UART_MCR);
|
| 2327 |
|
|
restore_flags(flags);
|
| 2328 |
|
|
return (0);
|
| 2329 |
|
|
}
|
| 2330 |
|
|
|
| 2331 |
|
|
static int mxser_read_register(int, unsigned short *);
|
| 2332 |
|
|
static int mxser_program_mode(int);
|
| 2333 |
|
|
static void mxser_normal_mode(int);
|
| 2334 |
|
|
|
| 2335 |
|
|
static int mxser_get_ISA_conf(int cap, struct mxser_hwconf *hwconf)
|
| 2336 |
|
|
{
|
| 2337 |
|
|
int id, i, bits;
|
| 2338 |
|
|
unsigned short regs[16], irq;
|
| 2339 |
|
|
unsigned char scratch, scratch2;
|
| 2340 |
|
|
|
| 2341 |
|
|
id = mxser_read_register(cap, regs);
|
| 2342 |
|
|
if (id == C168_ASIC_ID)
|
| 2343 |
|
|
hwconf->board_type = MXSER_BOARD_C168_ISA;
|
| 2344 |
|
|
else if (id == C104_ASIC_ID)
|
| 2345 |
|
|
hwconf->board_type = MXSER_BOARD_C104_ISA;
|
| 2346 |
|
|
else if (id == C102_ASIC_ID)
|
| 2347 |
|
|
hwconf->board_type = MXSER_BOARD_C102_ISA;
|
| 2348 |
|
|
else if (id == CI132_ASIC_ID)
|
| 2349 |
|
|
hwconf->board_type = MXSER_BOARD_CI132;
|
| 2350 |
|
|
else if (id == CI134_ASIC_ID)
|
| 2351 |
|
|
hwconf->board_type = MXSER_BOARD_CI134;
|
| 2352 |
|
|
else if (id == CI104J_ASIC_ID)
|
| 2353 |
|
|
hwconf->board_type = MXSER_BOARD_CI104J;
|
| 2354 |
|
|
else
|
| 2355 |
|
|
return (0);
|
| 2356 |
|
|
irq = regs[9] & 0x0F;
|
| 2357 |
|
|
irq = irq | (irq << 4);
|
| 2358 |
|
|
irq = irq | (irq << 8);
|
| 2359 |
|
|
if ((irq != regs[9]) || ((id == 1) && (irq != regs[10]))) {
|
| 2360 |
|
|
return (MXSER_ERR_IRQ_CONFLIT);
|
| 2361 |
|
|
}
|
| 2362 |
|
|
if (!irq) {
|
| 2363 |
|
|
return (MXSER_ERR_IRQ);
|
| 2364 |
|
|
}
|
| 2365 |
|
|
for (i = 0; i < 8; i++)
|
| 2366 |
|
|
hwconf->ioaddr[i] = (int) regs[i + 1] & 0xFFF8;
|
| 2367 |
|
|
hwconf->irq = (int) (irq & 0x0F);
|
| 2368 |
|
|
if ((regs[12] & 0x80) == 0) {
|
| 2369 |
|
|
return (MXSER_ERR_VECTOR);
|
| 2370 |
|
|
}
|
| 2371 |
|
|
hwconf->vector = (int) regs[11]; /* interrupt vector */
|
| 2372 |
|
|
if (id == 1)
|
| 2373 |
|
|
hwconf->vector_mask = 0x00FF;
|
| 2374 |
|
|
else
|
| 2375 |
|
|
hwconf->vector_mask = 0x000F;
|
| 2376 |
|
|
for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) {
|
| 2377 |
|
|
if (regs[12] & bits)
|
| 2378 |
|
|
hwconf->baud_base[i] = 921600;
|
| 2379 |
|
|
else
|
| 2380 |
|
|
hwconf->baud_base[i] = 115200;
|
| 2381 |
|
|
}
|
| 2382 |
|
|
scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB);
|
| 2383 |
|
|
outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR);
|
| 2384 |
|
|
outb(0, cap + UART_EFR); /* EFR is the same as FCR */
|
| 2385 |
|
|
outb(scratch2, cap + UART_LCR);
|
| 2386 |
|
|
outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR);
|
| 2387 |
|
|
scratch = inb(cap + UART_IIR);
|
| 2388 |
|
|
if (scratch & 0xC0)
|
| 2389 |
|
|
hwconf->uart_type = PORT_16550A;
|
| 2390 |
|
|
else
|
| 2391 |
|
|
hwconf->uart_type = PORT_16450;
|
| 2392 |
|
|
if (id == 1)
|
| 2393 |
|
|
hwconf->ports = 8;
|
| 2394 |
|
|
else
|
| 2395 |
|
|
hwconf->ports = 4;
|
| 2396 |
|
|
return (hwconf->ports);
|
| 2397 |
|
|
}
|
| 2398 |
|
|
|
| 2399 |
|
|
#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */
|
| 2400 |
|
|
#define CHIP_DO 0x02 /* Serial Data Output in Eprom */
|
| 2401 |
|
|
#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */
|
| 2402 |
|
|
#define CHIP_DI 0x08 /* Serial Data Input in Eprom */
|
| 2403 |
|
|
#define EN_CCMD 0x000 /* Chip's command register */
|
| 2404 |
|
|
#define EN0_RSARLO 0x008 /* Remote start address reg 0 */
|
| 2405 |
|
|
#define EN0_RSARHI 0x009 /* Remote start address reg 1 */
|
| 2406 |
|
|
#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */
|
| 2407 |
|
|
#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */
|
| 2408 |
|
|
#define EN0_DCFG 0x00E /* Data configuration reg WR */
|
| 2409 |
|
|
#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */
|
| 2410 |
|
|
#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */
|
| 2411 |
|
|
#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */
|
| 2412 |
|
|
static int mxser_read_register(int port, unsigned short *regs)
|
| 2413 |
|
|
{
|
| 2414 |
|
|
int i, k, value, id;
|
| 2415 |
|
|
unsigned int j;
|
| 2416 |
|
|
|
| 2417 |
|
|
id = mxser_program_mode(port);
|
| 2418 |
|
|
if (id < 0)
|
| 2419 |
|
|
return (id);
|
| 2420 |
|
|
for (i = 0; i < 14; i++) {
|
| 2421 |
|
|
k = (i & 0x3F) | 0x180;
|
| 2422 |
|
|
for (j = 0x100; j > 0; j >>= 1) {
|
| 2423 |
|
|
outb(CHIP_CS, port);
|
| 2424 |
|
|
if (k & j) {
|
| 2425 |
|
|
outb(CHIP_CS | CHIP_DO, port);
|
| 2426 |
|
|
outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */
|
| 2427 |
|
|
} else {
|
| 2428 |
|
|
outb(CHIP_CS, port);
|
| 2429 |
|
|
outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */
|
| 2430 |
|
|
}
|
| 2431 |
|
|
}
|
| 2432 |
|
|
(void) inb(port);
|
| 2433 |
|
|
value = 0;
|
| 2434 |
|
|
for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) {
|
| 2435 |
|
|
outb(CHIP_CS, port);
|
| 2436 |
|
|
outb(CHIP_CS | CHIP_SK, port);
|
| 2437 |
|
|
if (inb(port) & CHIP_DI)
|
| 2438 |
|
|
value |= j;
|
| 2439 |
|
|
}
|
| 2440 |
|
|
regs[i] = value;
|
| 2441 |
|
|
outb(0, port);
|
| 2442 |
|
|
}
|
| 2443 |
|
|
mxser_normal_mode(port);
|
| 2444 |
|
|
return (id);
|
| 2445 |
|
|
}
|
| 2446 |
|
|
|
| 2447 |
|
|
static int mxser_program_mode(int port)
|
| 2448 |
|
|
{
|
| 2449 |
|
|
int id, i, j, n;
|
| 2450 |
|
|
unsigned long flags;
|
| 2451 |
|
|
|
| 2452 |
|
|
save_flags(flags);
|
| 2453 |
|
|
cli();
|
| 2454 |
|
|
outb(0, port);
|
| 2455 |
|
|
outb(0, port);
|
| 2456 |
|
|
outb(0, port);
|
| 2457 |
|
|
(void) inb(port);
|
| 2458 |
|
|
(void) inb(port);
|
| 2459 |
|
|
outb(0, port);
|
| 2460 |
|
|
(void) inb(port);
|
| 2461 |
|
|
restore_flags(flags);
|
| 2462 |
|
|
id = inb(port + 1) & 0x1F;
|
| 2463 |
|
|
if ((id != C168_ASIC_ID) && (id != C104_ASIC_ID) && (id != CI104J_ASIC_ID) &&
|
| 2464 |
|
|
(id != C102_ASIC_ID) && (id != CI132_ASIC_ID) && (id != CI134_ASIC_ID))
|
| 2465 |
|
|
return (-1);
|
| 2466 |
|
|
for (i = 0, j = 0; i < 4; i++) {
|
| 2467 |
|
|
n = inb(port + 2);
|
| 2468 |
|
|
if (n == 'M') {
|
| 2469 |
|
|
j = 1;
|
| 2470 |
|
|
} else if ((j == 1) && (n == 1)) {
|
| 2471 |
|
|
j = 2;
|
| 2472 |
|
|
break;
|
| 2473 |
|
|
} else
|
| 2474 |
|
|
j = 0;
|
| 2475 |
|
|
}
|
| 2476 |
|
|
if (j != 2)
|
| 2477 |
|
|
id = -2;
|
| 2478 |
|
|
return (id);
|
| 2479 |
|
|
}
|
| 2480 |
|
|
|
| 2481 |
|
|
static void mxser_normal_mode(int port)
|
| 2482 |
|
|
{
|
| 2483 |
|
|
int i, n;
|
| 2484 |
|
|
|
| 2485 |
|
|
outb(0xA5, port + 1);
|
| 2486 |
|
|
outb(0x80, port + 3);
|
| 2487 |
|
|
outb(12, port + 0); /* 9600 bps */
|
| 2488 |
|
|
outb(0, port + 1);
|
| 2489 |
|
|
outb(0x03, port + 3); /* 8 data bits */
|
| 2490 |
|
|
outb(0x13, port + 4); /* loop back mode */
|
| 2491 |
|
|
for (i = 0; i < 16; i++) {
|
| 2492 |
|
|
n = inb(port + 5);
|
| 2493 |
|
|
if ((n & 0x61) == 0x60)
|
| 2494 |
|
|
break;
|
| 2495 |
|
|
if ((n & 1) == 1)
|
| 2496 |
|
|
(void) inb(port);
|
| 2497 |
|
|
}
|
| 2498 |
|
|
outb(0x00, port + 4);
|
| 2499 |
|
|
}
|
