| 1 |
199 |
simons |
/*
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| 2 |
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* linux/drivers/char/pcxe.c
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| 3 |
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*
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| 4 |
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* Written by Troy De Jongh, November, 1994
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| 5 |
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*
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* Copyright (C) 1994,1995 Troy De Jongh
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* This software may be used and distributed according to the terms
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* of the GNU Public License.
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*
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| 10 |
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* This driver is for the DigiBoard PC/Xe and PC/Xi line of products.
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| 11 |
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*
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* This driver does NOT support DigiBoard's fastcook FEP option and
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| 13 |
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* does not support the transparent print (i.e. digiprint) option.
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| 14 |
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*
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| 15 |
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* This Driver is currently maintained by Christoph Lameter (clameter@fuller.edu)
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* Please contact the mailing list for problems first.
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*
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* Sources of Information:
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* 1. The Linux Digiboard Page at http://private.fuller.edu/clameter/digi.html
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* 2. The Linux Digiboard Mailing list at digiboard@list.fuller.edu
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* (Simply write a message to introduce yourself to subscribe)
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*
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* 1.5.2 Fall 1995 Bug fixes by David Nugent
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* 1.5.3 March 9, 1996 Christoph Lameter: Fixed 115.2K Support. Memory
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* allocation harmonized with 1.3.X Series.
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* 1.5.4 March 30, 1996 Christoph Lameter: Fixup for 1.3.81. Use init_bh
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* instead of direct assignment to kernel arrays.
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* 1.5.5 April 5, 1996 Major device numbers corrected.
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* Mike McLagan<mike.mclagan@linux.org>: Add setup
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* variable handling, instead of using the old pcxxconfig.h
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* 1.5.6 April 16, 1996 Christoph Lameter: Pointer cleanup, macro cleanup.
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* Call out devices changed to /dev/cudxx.
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* 1.5.7 July 22, 1996 Martin Mares: CLOCAL fix, pcxe_table clearing.
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* David Nugent: Bug in pcxe_open.
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* Brian J. Murrell: Modem Control fixes, Majors correctly assigned
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*
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*/
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#undef MODULE
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/* Module code is broken right now. Don't enable this unless you want to fix it */
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#undef SPEED_HACK
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/* If you define SPEED_HACK then you get the following Baudrate translation
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19200 = 57600
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38400 = 115K
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The driver supports the native 57.6K and 115K Baudrates under Linux, but
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some distributions like Slackware 3.0 don't like these high baudrates.
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*/
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/ioport.h>
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#include <linux/errno.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/major.h>
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#include <linux/string.h>
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#include <linux/fcntl.h>
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#include <linux/ptrace.h>
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#include <linux/delay.h>
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#include <linux/serial.h>
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#include <linux/tty_driver.h>
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#include <linux/malloc.h>
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#include <linux/string.h>
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#ifndef MODULE
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/* is* routines not available in modules
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** the need for this should go away when probing is done. :-)
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** brian@ilinx.com
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*/
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#include <linux/ctype.h>
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#endif
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/segment.h>
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#include <asm/bitops.h>
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#define VERSION "1.5.7"
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static char *banner = "Digiboard PC/X{i,e,eve} driver v1.5.7";
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#include "digi.h"
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#include "fep.h"
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#include "pcxx.h"
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#include "digi_fep.h"
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#include "digi_bios.h"
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/* Define one default setting if no digi= config line is used.
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* Default is ALTPIN = ON, PC/16E, 16 ports, I/O 200h Memory 0D0000h
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| 95 |
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*/
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| 96 |
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static struct board_info boards[MAX_DIGI_BOARDS] = { { ENABLED, 0, ON, 16, 0x200, 0xd0000,0 } };
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| 98 |
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static int numcards = 1;
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| 99 |
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static int nbdevs = 0;
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| 101 |
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static struct channel *digi_channels;
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| 102 |
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static struct tty_struct **pcxe_table;
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| 103 |
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static struct termios **pcxe_termios;
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| 104 |
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static struct termios **pcxe_termios_locked;
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| 106 |
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int pcxx_ncook=sizeof(pcxx_cook);
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int pcxx_nbios=sizeof(pcxx_bios);
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| 109 |
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define pcxxassert(x, msg) if(!(x)) pcxx_error(__LINE__, msg)
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| 112 |
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#define FEPTIMEOUT 200000
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#define SERIAL_TYPE_NORMAL 1
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| 114 |
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#define SERIAL_TYPE_CALLOUT 2
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| 115 |
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#define PCXE_EVENT_HANGUP 1
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| 117 |
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struct tty_driver pcxe_driver;
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| 118 |
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struct tty_driver pcxe_callout;
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| 119 |
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static int pcxe_refcount;
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DECLARE_TASK_QUEUE(tq_pcxx);
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| 123 |
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static void pcxxpoll(void);
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static void pcxxdelay(int);
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static void fepcmd(struct channel *, int, int, int, int, int);
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static void pcxe_put_char(struct tty_struct *, unsigned char);
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| 127 |
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static void pcxe_flush_chars(struct tty_struct *);
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| 128 |
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static void pcxx_error(int, char *);
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| 129 |
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static void pcxe_close(struct tty_struct *, struct file *);
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| 130 |
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static int pcxe_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
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| 131 |
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static void pcxe_set_termios(struct tty_struct *, struct termios *);
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| 132 |
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static int pcxe_write(struct tty_struct *, int, const unsigned char *, int);
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| 133 |
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static int pcxe_write_room(struct tty_struct *);
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| 134 |
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static int pcxe_chars_in_buffer(struct tty_struct *);
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| 135 |
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static void pcxe_flush_buffer(struct tty_struct *);
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| 136 |
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static void doevent(int);
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| 137 |
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static void receive_data(struct channel *);
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| 138 |
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static void pcxxparam(struct tty_struct *, struct channel *ch);
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| 139 |
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static void do_softint(void *);
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| 140 |
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static inline void pcxe_sched_event(struct channel *, int);
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| 141 |
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static void do_pcxe_bh(void);
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| 142 |
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static void pcxe_start(struct tty_struct *);
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| 143 |
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static void pcxe_stop(struct tty_struct *);
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| 144 |
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static void pcxe_throttle(struct tty_struct *);
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| 145 |
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static void pcxe_unthrottle(struct tty_struct *);
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| 146 |
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static void digi_send_break(struct channel *ch, int msec);
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| 147 |
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static void shutdown(struct channel *);
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| 148 |
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static void setup_empty_event(struct tty_struct *tty, struct channel *ch);
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| 149 |
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static inline void memwinon(struct board_info *b, unsigned int win);
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| 150 |
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static inline void memwinoff(struct board_info *b, unsigned int win);
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| 151 |
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static inline void globalwinon(struct channel *ch);
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| 152 |
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static inline void rxwinon(struct channel *ch);
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| 153 |
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static inline void txwinon(struct channel *ch);
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| 154 |
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static inline void memoff(struct channel *ch);
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| 155 |
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static inline void assertgwinon(struct channel *ch);
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| 156 |
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static inline void assertmemoff(struct channel *ch);
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| 157 |
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| 158 |
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#define TZ_BUFSZ 4096
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| 159 |
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| 160 |
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/* function definitions */
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| 161 |
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#ifdef MODULE
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| 162 |
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int init_module(void);
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| 163 |
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void cleanup_module(void);
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| 164 |
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| 165 |
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/*
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| 166 |
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* Loadable module initialization stuff.
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| 167 |
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*/
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| 168 |
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| 169 |
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int init_module()
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| 170 |
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{
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| 171 |
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| 172 |
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return pcxe_init();
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| 173 |
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| 174 |
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}
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| 175 |
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| 176 |
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/*****************************************************************************/
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| 177 |
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| 178 |
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void cleanup_module()
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| 179 |
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{
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| 180 |
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| 181 |
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unsigned long flags;
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| 182 |
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int crd, i;
|
| 183 |
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int e1, e2;
|
| 184 |
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struct board_info *bd;
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| 185 |
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struct channel *ch;
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| 186 |
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| 187 |
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printk(KERN_INFO "Unloading PC/Xx: version %s\n", VERSION);
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| 188 |
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| 189 |
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save_flags(flags);
|
| 190 |
|
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cli();
|
| 191 |
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timer_active &= ~(1 << DIGI_TIMER);
|
| 192 |
|
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timer_table[DIGI_TIMER].fn = NULL;
|
| 193 |
|
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timer_table[DIGI_TIMER].expires = 0;
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| 194 |
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| 195 |
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if ((e1 = tty_unregister_driver(&pcxe_driver)))
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| 196 |
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printk("SERIAL: failed to unregister serial driver (%d)\n", e1);
|
| 197 |
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if ((e2 = tty_unregister_driver(&pcxe_callout)))
|
| 198 |
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printk("SERIAL: failed to unregister callout driver (%d)\n",e2);
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| 199 |
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|
| 200 |
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for(crd=0; crd < numcards; crd++) {
|
| 201 |
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bd = &boards[crd];
|
| 202 |
|
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ch = digi_channels+bd->first_minor;
|
| 203 |
|
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for(i=0; i < bd->numports; i++, ch++) {
|
| 204 |
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kfree(ch->tmp_buf);
|
| 205 |
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}
|
| 206 |
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release_region(bd->port, 4);
|
| 207 |
|
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}
|
| 208 |
|
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kfree(digi_channels);
|
| 209 |
|
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kfree(pcxe_termios_locked);
|
| 210 |
|
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kfree(pcxe_termios);
|
| 211 |
|
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kfree(pcxe_table);
|
| 212 |
|
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restore_flags(flags);
|
| 213 |
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}
|
| 214 |
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#endif
|
| 215 |
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|
| 216 |
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static inline struct channel *chan(register struct tty_struct *tty)
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| 217 |
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{
|
| 218 |
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if (tty) {
|
| 219 |
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register struct channel *ch=(struct channel *)tty->driver_data;
|
| 220 |
|
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if (ch >= digi_channels && ch < digi_channels+nbdevs) {
|
| 221 |
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if (ch->magic==PCXX_MAGIC)
|
| 222 |
|
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return ch;
|
| 223 |
|
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}
|
| 224 |
|
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}
|
| 225 |
|
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return NULL;
|
| 226 |
|
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}
|
| 227 |
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|
| 228 |
|
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/* These inline routines are to turn board memory on and off */
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| 229 |
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static inline void memwinon(struct board_info *b, unsigned int win)
|
| 230 |
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{
|
| 231 |
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if(b->type == PCXEVE)
|
| 232 |
|
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outb_p(FEPWIN|win, b->port+1);
|
| 233 |
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else
|
| 234 |
|
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outb_p(inb(b->port)|FEPMEM, b->port);
|
| 235 |
|
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}
|
| 236 |
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|
| 237 |
|
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static inline void memwinoff(struct board_info *b, unsigned int win)
|
| 238 |
|
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{
|
| 239 |
|
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outb_p(inb(b->port)&~FEPMEM, b->port);
|
| 240 |
|
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if(b->type == PCXEVE)
|
| 241 |
|
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outb_p(0, b->port + 1);
|
| 242 |
|
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}
|
| 243 |
|
|
|
| 244 |
|
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static inline void globalwinon(struct channel *ch)
|
| 245 |
|
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{
|
| 246 |
|
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if(ch->board->type == PCXEVE)
|
| 247 |
|
|
outb_p(FEPWIN, ch->board->port+1);
|
| 248 |
|
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else
|
| 249 |
|
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outb_p(FEPMEM, ch->board->port);
|
| 250 |
|
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}
|
| 251 |
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|
|
| 252 |
|
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static inline void rxwinon(struct channel *ch)
|
| 253 |
|
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{
|
| 254 |
|
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if(ch->rxwin == 0)
|
| 255 |
|
|
outb_p(FEPMEM, ch->board->port);
|
| 256 |
|
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else
|
| 257 |
|
|
outb_p(ch->rxwin, ch->board->port+1);
|
| 258 |
|
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}
|
| 259 |
|
|
|
| 260 |
|
|
static inline void txwinon(struct channel *ch)
|
| 261 |
|
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{
|
| 262 |
|
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if(ch->txwin == 0)
|
| 263 |
|
|
outb_p(FEPMEM, ch->board->port);
|
| 264 |
|
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else
|
| 265 |
|
|
outb_p(ch->txwin, ch->board->port+1);
|
| 266 |
|
|
}
|
| 267 |
|
|
|
| 268 |
|
|
static inline void memoff(struct channel *ch)
|
| 269 |
|
|
{
|
| 270 |
|
|
outb_p(0, ch->board->port);
|
| 271 |
|
|
if(ch->board->type == PCXEVE)
|
| 272 |
|
|
outb_p(0, ch->board->port+1);
|
| 273 |
|
|
}
|
| 274 |
|
|
|
| 275 |
|
|
static inline void assertgwinon(struct channel *ch)
|
| 276 |
|
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{
|
| 277 |
|
|
if(ch->board->type != PCXEVE)
|
| 278 |
|
|
pcxxassert(inb(ch->board->port) & FEPMEM, "Global memory off");
|
| 279 |
|
|
}
|
| 280 |
|
|
|
| 281 |
|
|
static inline void assertmemoff(struct channel *ch)
|
| 282 |
|
|
{
|
| 283 |
|
|
if(ch->board->type != PCXEVE)
|
| 284 |
|
|
pcxxassert(!(inb(ch->board->port) & FEPMEM), "Memory on");
|
| 285 |
|
|
}
|
| 286 |
|
|
|
| 287 |
|
|
static inline void pcxe_sched_event(struct channel *info, int event)
|
| 288 |
|
|
{
|
| 289 |
|
|
info->event |= 1 << event;
|
| 290 |
|
|
queue_task_irq_off(&info->tqueue, &tq_pcxx);
|
| 291 |
|
|
mark_bh(DIGI_BH);
|
| 292 |
|
|
}
|
| 293 |
|
|
|
| 294 |
|
|
static void pcxx_error(int line, char *msg)
|
| 295 |
|
|
{
|
| 296 |
|
|
printk("pcxx_error (DigiBoard): line=%d %s\n", line, msg);
|
| 297 |
|
|
}
|
| 298 |
|
|
|
| 299 |
|
|
static int pcxx_waitcarrier(struct tty_struct *tty,struct file *filp,struct channel *info)
|
| 300 |
|
|
{
|
| 301 |
|
|
struct wait_queue wait = { current, NULL };
|
| 302 |
|
|
int retval = 0;
|
| 303 |
|
|
int do_clocal = 0;
|
| 304 |
|
|
|
| 305 |
|
|
if (info->asyncflags & ASYNC_CALLOUT_ACTIVE) {
|
| 306 |
|
|
if (info->normal_termios.c_cflag & CLOCAL)
|
| 307 |
|
|
do_clocal = 1;
|
| 308 |
|
|
} else {
|
| 309 |
|
|
if (tty->termios->c_cflag & CLOCAL)
|
| 310 |
|
|
do_clocal = 1;
|
| 311 |
|
|
}
|
| 312 |
|
|
|
| 313 |
|
|
/*
|
| 314 |
|
|
* Block waiting for the carrier detect and the line to become free
|
| 315 |
|
|
*/
|
| 316 |
|
|
|
| 317 |
|
|
retval = 0;
|
| 318 |
|
|
add_wait_queue(&info->open_wait, &wait);
|
| 319 |
|
|
info->count--;
|
| 320 |
|
|
info->blocked_open++;
|
| 321 |
|
|
|
| 322 |
|
|
for (;;) {
|
| 323 |
|
|
cli();
|
| 324 |
|
|
if ((info->asyncflags & ASYNC_CALLOUT_ACTIVE) == 0) {
|
| 325 |
|
|
globalwinon(info);
|
| 326 |
|
|
info->omodem |= DTR|RTS;
|
| 327 |
|
|
fepcmd(info, SETMODEM, DTR|RTS, 0, 10, 1);
|
| 328 |
|
|
memoff(info);
|
| 329 |
|
|
}
|
| 330 |
|
|
sti();
|
| 331 |
|
|
current->state = TASK_INTERRUPTIBLE;
|
| 332 |
|
|
if(tty_hung_up_p(filp) || (info->asyncflags & ASYNC_INITIALIZED) == 0) {
|
| 333 |
|
|
if(info->asyncflags & ASYNC_HUP_NOTIFY)
|
| 334 |
|
|
retval = -EAGAIN;
|
| 335 |
|
|
else
|
| 336 |
|
|
retval = -ERESTARTSYS;
|
| 337 |
|
|
break;
|
| 338 |
|
|
}
|
| 339 |
|
|
if ((info->asyncflags & ASYNC_CALLOUT_ACTIVE) == 0 &&
|
| 340 |
|
|
(info->asyncflags & ASYNC_CLOSING) == 0 &&
|
| 341 |
|
|
(do_clocal || (info->imodem & info->dcd)))
|
| 342 |
|
|
break;
|
| 343 |
|
|
if(current->signal & ~current->blocked) {
|
| 344 |
|
|
retval = -ERESTARTSYS;
|
| 345 |
|
|
break;
|
| 346 |
|
|
}
|
| 347 |
|
|
schedule();
|
| 348 |
|
|
}
|
| 349 |
|
|
current->state = TASK_RUNNING;
|
| 350 |
|
|
remove_wait_queue(&info->open_wait, &wait);
|
| 351 |
|
|
|
| 352 |
|
|
if(!tty_hung_up_p(filp))
|
| 353 |
|
|
info->count++;
|
| 354 |
|
|
info->blocked_open--;
|
| 355 |
|
|
|
| 356 |
|
|
return retval;
|
| 357 |
|
|
}
|
| 358 |
|
|
|
| 359 |
|
|
|
| 360 |
|
|
int pcxe_open(struct tty_struct *tty, struct file * filp)
|
| 361 |
|
|
{
|
| 362 |
|
|
volatile struct board_chan *bc;
|
| 363 |
|
|
struct channel *ch;
|
| 364 |
|
|
unsigned long flags;
|
| 365 |
|
|
int line;
|
| 366 |
|
|
int boardnum;
|
| 367 |
|
|
int retval;
|
| 368 |
|
|
|
| 369 |
|
|
line = MINOR(tty->device) - tty->driver.minor_start;
|
| 370 |
|
|
|
| 371 |
|
|
if(line < 0 || line >= nbdevs) {
|
| 372 |
|
|
printk("line out of range in pcxe_open\n");
|
| 373 |
|
|
tty->driver_data = NULL;
|
| 374 |
|
|
return(-ENODEV);
|
| 375 |
|
|
}
|
| 376 |
|
|
|
| 377 |
|
|
for(boardnum=0;boardnum<numcards;boardnum++)
|
| 378 |
|
|
if ((line >= boards[boardnum].first_minor) &&
|
| 379 |
|
|
(line < boards[boardnum].first_minor + boards[boardnum].numports))
|
| 380 |
|
|
break;
|
| 381 |
|
|
|
| 382 |
|
|
if(boardnum >= numcards || boards[boardnum].status == DISABLED ||
|
| 383 |
|
|
(line - boards[boardnum].first_minor) >= boards[boardnum].numports) {
|
| 384 |
|
|
tty->driver_data = NULL; /* Mark this device as 'down' */
|
| 385 |
|
|
return(-ENODEV);
|
| 386 |
|
|
}
|
| 387 |
|
|
|
| 388 |
|
|
ch = digi_channels+line;
|
| 389 |
|
|
|
| 390 |
|
|
if(ch->brdchan == 0) {
|
| 391 |
|
|
tty->driver_data = NULL;
|
| 392 |
|
|
return(-ENODEV);
|
| 393 |
|
|
}
|
| 394 |
|
|
|
| 395 |
|
|
/* flag the kernel that there is somebody using this guy */
|
| 396 |
|
|
MOD_INC_USE_COUNT;
|
| 397 |
|
|
/*
|
| 398 |
|
|
* If the device is in the middle of being closed, then block
|
| 399 |
|
|
* until it's done, and then try again.
|
| 400 |
|
|
*/
|
| 401 |
|
|
if(ch->asyncflags & ASYNC_CLOSING) {
|
| 402 |
|
|
interruptible_sleep_on(&ch->close_wait);
|
| 403 |
|
|
if(ch->asyncflags & ASYNC_HUP_NOTIFY)
|
| 404 |
|
|
return -EAGAIN;
|
| 405 |
|
|
else
|
| 406 |
|
|
return -ERESTARTSYS;
|
| 407 |
|
|
}
|
| 408 |
|
|
|
| 409 |
|
|
save_flags(flags);
|
| 410 |
|
|
cli();
|
| 411 |
|
|
ch->count++;
|
| 412 |
|
|
tty->driver_data = ch;
|
| 413 |
|
|
ch->tty = tty;
|
| 414 |
|
|
|
| 415 |
|
|
if ((ch->asyncflags & ASYNC_INITIALIZED) == 0) {
|
| 416 |
|
|
unsigned int head;
|
| 417 |
|
|
|
| 418 |
|
|
globalwinon(ch);
|
| 419 |
|
|
ch->statusflags = 0;
|
| 420 |
|
|
bc=ch->brdchan;
|
| 421 |
|
|
ch->imodem = bc->mstat;
|
| 422 |
|
|
head = bc->rin;
|
| 423 |
|
|
bc->rout = head;
|
| 424 |
|
|
ch->tty = tty;
|
| 425 |
|
|
pcxxparam(tty,ch);
|
| 426 |
|
|
ch->imodem = bc->mstat;
|
| 427 |
|
|
bc->idata = 1;
|
| 428 |
|
|
ch->omodem = DTR|RTS;
|
| 429 |
|
|
fepcmd(ch, SETMODEM, DTR|RTS, 0, 10, 1);
|
| 430 |
|
|
memoff(ch);
|
| 431 |
|
|
ch->asyncflags |= ASYNC_INITIALIZED;
|
| 432 |
|
|
}
|
| 433 |
|
|
restore_flags(flags);
|
| 434 |
|
|
|
| 435 |
|
|
if(ch->asyncflags & ASYNC_CLOSING) {
|
| 436 |
|
|
interruptible_sleep_on(&ch->close_wait);
|
| 437 |
|
|
if(ch->asyncflags & ASYNC_HUP_NOTIFY)
|
| 438 |
|
|
return -EAGAIN;
|
| 439 |
|
|
else
|
| 440 |
|
|
return -ERESTARTSYS;
|
| 441 |
|
|
}
|
| 442 |
|
|
/*
|
| 443 |
|
|
* If this is a callout device, then just make sure the normal
|
| 444 |
|
|
* device isn't being used.
|
| 445 |
|
|
*/
|
| 446 |
|
|
if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
|
| 447 |
|
|
if (ch->asyncflags & ASYNC_NORMAL_ACTIVE)
|
| 448 |
|
|
return -EBUSY;
|
| 449 |
|
|
if (ch->asyncflags & ASYNC_CALLOUT_ACTIVE) {
|
| 450 |
|
|
if ((ch->asyncflags & ASYNC_SESSION_LOCKOUT) &&
|
| 451 |
|
|
(ch->session != current->session))
|
| 452 |
|
|
return -EBUSY;
|
| 453 |
|
|
if((ch->asyncflags & ASYNC_PGRP_LOCKOUT) &&
|
| 454 |
|
|
(ch->pgrp != current->pgrp))
|
| 455 |
|
|
return -EBUSY;
|
| 456 |
|
|
}
|
| 457 |
|
|
ch->asyncflags |= ASYNC_CALLOUT_ACTIVE;
|
| 458 |
|
|
}
|
| 459 |
|
|
else {
|
| 460 |
|
|
if (filp->f_flags & O_NONBLOCK) {
|
| 461 |
|
|
if(ch->asyncflags & ASYNC_CALLOUT_ACTIVE)
|
| 462 |
|
|
return -EBUSY;
|
| 463 |
|
|
}
|
| 464 |
|
|
else {
|
| 465 |
|
|
/* this has to be set in order for the "block until
|
| 466 |
|
|
* CD" code to work correctly. i'm not sure under
|
| 467 |
|
|
* what circumstances asyncflags should be set to
|
| 468 |
|
|
* ASYNC_NORMAL_ACTIVE though
|
| 469 |
|
|
* brian@ilinx.com
|
| 470 |
|
|
*/
|
| 471 |
|
|
ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
|
| 472 |
|
|
if ((retval = pcxx_waitcarrier(tty, filp, ch)) != 0)
|
| 473 |
|
|
return retval;
|
| 474 |
|
|
}
|
| 475 |
|
|
ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
|
| 476 |
|
|
}
|
| 477 |
|
|
|
| 478 |
|
|
save_flags(flags);
|
| 479 |
|
|
cli();
|
| 480 |
|
|
if((ch->count == 1) && (ch->asyncflags & ASYNC_SPLIT_TERMIOS)) {
|
| 481 |
|
|
if(tty->driver.subtype == SERIAL_TYPE_NORMAL)
|
| 482 |
|
|
*tty->termios = ch->normal_termios;
|
| 483 |
|
|
else
|
| 484 |
|
|
*tty->termios = ch->callout_termios;
|
| 485 |
|
|
globalwinon(ch);
|
| 486 |
|
|
pcxxparam(tty,ch);
|
| 487 |
|
|
memoff(ch);
|
| 488 |
|
|
}
|
| 489 |
|
|
|
| 490 |
|
|
ch->session = current->session;
|
| 491 |
|
|
ch->pgrp = current->pgrp;
|
| 492 |
|
|
restore_flags(flags);
|
| 493 |
|
|
return 0;
|
| 494 |
|
|
}
|
| 495 |
|
|
|
| 496 |
|
|
static void shutdown(struct channel *info)
|
| 497 |
|
|
{
|
| 498 |
|
|
unsigned long flags;
|
| 499 |
|
|
volatile struct board_chan *bc;
|
| 500 |
|
|
struct tty_struct *tty;
|
| 501 |
|
|
|
| 502 |
|
|
if (!(info->asyncflags & ASYNC_INITIALIZED))
|
| 503 |
|
|
return;
|
| 504 |
|
|
|
| 505 |
|
|
save_flags(flags);
|
| 506 |
|
|
cli();
|
| 507 |
|
|
globalwinon(info);
|
| 508 |
|
|
|
| 509 |
|
|
bc = info->brdchan;
|
| 510 |
|
|
if(bc)
|
| 511 |
|
|
bc->idata = 0;
|
| 512 |
|
|
|
| 513 |
|
|
tty = info->tty;
|
| 514 |
|
|
|
| 515 |
|
|
/*
|
| 516 |
|
|
* If we're a modem control device and HUPCL is on, drop RTS & DTR.
|
| 517 |
|
|
*/
|
| 518 |
|
|
if(tty->termios->c_cflag & HUPCL) {
|
| 519 |
|
|
info->omodem &= ~(RTS|DTR);
|
| 520 |
|
|
fepcmd(info, SETMODEM, 0, DTR|RTS, 10, 1);
|
| 521 |
|
|
}
|
| 522 |
|
|
|
| 523 |
|
|
memoff(info);
|
| 524 |
|
|
info->asyncflags &= ~ASYNC_INITIALIZED;
|
| 525 |
|
|
restore_flags(flags);
|
| 526 |
|
|
}
|
| 527 |
|
|
|
| 528 |
|
|
|
| 529 |
|
|
static void pcxe_close(struct tty_struct * tty, struct file * filp)
|
| 530 |
|
|
{
|
| 531 |
|
|
struct channel *info;
|
| 532 |
|
|
|
| 533 |
|
|
if ((info=chan(tty))!=NULL) {
|
| 534 |
|
|
unsigned long flags;
|
| 535 |
|
|
save_flags(flags);
|
| 536 |
|
|
cli();
|
| 537 |
|
|
|
| 538 |
|
|
if(tty_hung_up_p(filp)) {
|
| 539 |
|
|
/* flag that somebody is done with this module */
|
| 540 |
|
|
MOD_DEC_USE_COUNT;
|
| 541 |
|
|
restore_flags(flags);
|
| 542 |
|
|
return;
|
| 543 |
|
|
}
|
| 544 |
|
|
/* this check is in serial.c, it won't hurt to do it here too */
|
| 545 |
|
|
if ((tty->count == 1) && (info->count != 1)) {
|
| 546 |
|
|
/*
|
| 547 |
|
|
* Uh, oh. tty->count is 1, which means that the tty
|
| 548 |
|
|
* structure will be freed. Info->count should always
|
| 549 |
|
|
* be one in these conditions. If it's greater than
|
| 550 |
|
|
* one, we've got real problems, since it means the
|
| 551 |
|
|
* serial port won't be shutdown.
|
| 552 |
|
|
*/
|
| 553 |
|
|
printk("pcxe_close: bad serial port count; tty->count is 1, info->count is %d\n", info->count);
|
| 554 |
|
|
info->count = 1;
|
| 555 |
|
|
}
|
| 556 |
|
|
if (info->count-- > 1) {
|
| 557 |
|
|
restore_flags(flags);
|
| 558 |
|
|
MOD_DEC_USE_COUNT;
|
| 559 |
|
|
return;
|
| 560 |
|
|
}
|
| 561 |
|
|
if (info->count < 0) {
|
| 562 |
|
|
info->count = 0;
|
| 563 |
|
|
}
|
| 564 |
|
|
|
| 565 |
|
|
info->asyncflags |= ASYNC_CLOSING;
|
| 566 |
|
|
|
| 567 |
|
|
/*
|
| 568 |
|
|
* Save the termios structure, since this port may have
|
| 569 |
|
|
* separate termios for callout and dialin.
|
| 570 |
|
|
*/
|
| 571 |
|
|
if(info->asyncflags & ASYNC_NORMAL_ACTIVE)
|
| 572 |
|
|
info->normal_termios = *tty->termios;
|
| 573 |
|
|
if(info->asyncflags & ASYNC_CALLOUT_ACTIVE)
|
| 574 |
|
|
info->callout_termios = *tty->termios;
|
| 575 |
|
|
tty->closing = 1;
|
| 576 |
|
|
if(info->asyncflags & ASYNC_INITIALIZED) {
|
| 577 |
|
|
setup_empty_event(tty,info);
|
| 578 |
|
|
tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */
|
| 579 |
|
|
}
|
| 580 |
|
|
|
| 581 |
|
|
if(tty->driver.flush_buffer)
|
| 582 |
|
|
tty->driver.flush_buffer(tty);
|
| 583 |
|
|
if(tty->ldisc.flush_buffer)
|
| 584 |
|
|
tty->ldisc.flush_buffer(tty);
|
| 585 |
|
|
shutdown(info);
|
| 586 |
|
|
tty->closing = 0;
|
| 587 |
|
|
info->event = 0;
|
| 588 |
|
|
info->tty = NULL;
|
| 589 |
|
|
#ifndef MODULE
|
| 590 |
|
|
/* ldiscs[] is not available in a MODULE
|
| 591 |
|
|
** worth noting that while I'm not sure what this hunk of code is supposed
|
| 592 |
|
|
** to do, it is not present in the serial.c driver. Hmmm. If you know,
|
| 593 |
|
|
** please send me a note. brian@ilinx.com
|
| 594 |
|
|
** Don't know either what this is supposed to do clameter@waterf.org.
|
| 595 |
|
|
*/
|
| 596 |
|
|
if(tty->ldisc.num != ldiscs[N_TTY].num) {
|
| 597 |
|
|
if(tty->ldisc.close)
|
| 598 |
|
|
(tty->ldisc.close)(tty);
|
| 599 |
|
|
tty->ldisc = ldiscs[N_TTY];
|
| 600 |
|
|
tty->termios->c_line = N_TTY;
|
| 601 |
|
|
if(tty->ldisc.open)
|
| 602 |
|
|
(tty->ldisc.open)(tty);
|
| 603 |
|
|
}
|
| 604 |
|
|
#endif
|
| 605 |
|
|
if(info->blocked_open) {
|
| 606 |
|
|
if(info->close_delay) {
|
| 607 |
|
|
current->state = TASK_INTERRUPTIBLE;
|
| 608 |
|
|
current->timeout = jiffies + info->close_delay;
|
| 609 |
|
|
schedule();
|
| 610 |
|
|
}
|
| 611 |
|
|
wake_up_interruptible(&info->open_wait);
|
| 612 |
|
|
}
|
| 613 |
|
|
info->asyncflags &= ~(ASYNC_NORMAL_ACTIVE|
|
| 614 |
|
|
ASYNC_CALLOUT_ACTIVE|ASYNC_CLOSING);
|
| 615 |
|
|
wake_up_interruptible(&info->close_wait);
|
| 616 |
|
|
MOD_DEC_USE_COUNT;
|
| 617 |
|
|
restore_flags(flags);
|
| 618 |
|
|
}
|
| 619 |
|
|
}
|
| 620 |
|
|
|
| 621 |
|
|
|
| 622 |
|
|
void pcxe_hangup(struct tty_struct *tty)
|
| 623 |
|
|
{
|
| 624 |
|
|
struct channel *ch;
|
| 625 |
|
|
|
| 626 |
|
|
if ((ch=chan(tty))!=NULL) {
|
| 627 |
|
|
unsigned long flags;
|
| 628 |
|
|
|
| 629 |
|
|
save_flags(flags);
|
| 630 |
|
|
cli();
|
| 631 |
|
|
shutdown(ch);
|
| 632 |
|
|
ch->event = 0;
|
| 633 |
|
|
ch->count = 0;
|
| 634 |
|
|
ch->tty = NULL;
|
| 635 |
|
|
ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
|
| 636 |
|
|
wake_up_interruptible(&ch->open_wait);
|
| 637 |
|
|
restore_flags(flags);
|
| 638 |
|
|
}
|
| 639 |
|
|
}
|
| 640 |
|
|
|
| 641 |
|
|
|
| 642 |
|
|
|
| 643 |
|
|
static int pcxe_write(struct tty_struct * tty, int from_user, const unsigned char *buf, int count)
|
| 644 |
|
|
{
|
| 645 |
|
|
struct channel *ch;
|
| 646 |
|
|
volatile struct board_chan *bc;
|
| 647 |
|
|
int total, remain, size, stlen;
|
| 648 |
|
|
unsigned int head, tail;
|
| 649 |
|
|
unsigned long flags;
|
| 650 |
|
|
|
| 651 |
|
|
/* printk("Entering pcxe_write()\n"); */
|
| 652 |
|
|
|
| 653 |
|
|
if ((ch=chan(tty))==NULL)
|
| 654 |
|
|
return 0;
|
| 655 |
|
|
|
| 656 |
|
|
bc = ch->brdchan;
|
| 657 |
|
|
size = ch->txbufsize;
|
| 658 |
|
|
|
| 659 |
|
|
if (from_user) {
|
| 660 |
|
|
|
| 661 |
|
|
save_flags(flags);
|
| 662 |
|
|
cli();
|
| 663 |
|
|
globalwinon(ch);
|
| 664 |
|
|
head = bc->tin & (size - 1);
|
| 665 |
|
|
/* It seems to be necessary to make sure that the value is stable here somehow
|
| 666 |
|
|
This is a rather odd pice of code here. */
|
| 667 |
|
|
do
|
| 668 |
|
|
{ tail = bc->tout;
|
| 669 |
|
|
} while (tail != bc->tout);
|
| 670 |
|
|
|
| 671 |
|
|
tail &= (size - 1);
|
| 672 |
|
|
stlen = (head >= tail) ? (size - (head - tail) - 1) : (tail - head - 1);
|
| 673 |
|
|
count = MIN(stlen, count);
|
| 674 |
|
|
if (count) {
|
| 675 |
|
|
if (verify_area(VERIFY_READ, (char*)buf, count))
|
| 676 |
|
|
count=0;
|
| 677 |
|
|
else memcpy_fromfs(ch->tmp_buf, buf, count);
|
| 678 |
|
|
}
|
| 679 |
|
|
buf = ch->tmp_buf;
|
| 680 |
|
|
memoff(ch);
|
| 681 |
|
|
restore_flags(flags);
|
| 682 |
|
|
}
|
| 683 |
|
|
|
| 684 |
|
|
/*
|
| 685 |
|
|
* All data is now local
|
| 686 |
|
|
*/
|
| 687 |
|
|
|
| 688 |
|
|
total = 0;
|
| 689 |
|
|
save_flags(flags);
|
| 690 |
|
|
cli();
|
| 691 |
|
|
globalwinon(ch);
|
| 692 |
|
|
head = bc->tin & (size - 1);
|
| 693 |
|
|
tail = bc->tout;
|
| 694 |
|
|
if (tail != bc->tout)
|
| 695 |
|
|
tail = bc->tout;
|
| 696 |
|
|
tail &= (size - 1);
|
| 697 |
|
|
if (head >= tail) {
|
| 698 |
|
|
remain = size - (head - tail) - 1;
|
| 699 |
|
|
stlen = size - head;
|
| 700 |
|
|
}
|
| 701 |
|
|
else {
|
| 702 |
|
|
remain = tail - head - 1;
|
| 703 |
|
|
stlen = remain;
|
| 704 |
|
|
}
|
| 705 |
|
|
count = MIN(remain, count);
|
| 706 |
|
|
|
| 707 |
|
|
txwinon(ch);
|
| 708 |
|
|
while (count > 0) {
|
| 709 |
|
|
stlen = MIN(count, stlen);
|
| 710 |
|
|
memcpy(ch->txptr + head, buf, stlen);
|
| 711 |
|
|
buf += stlen;
|
| 712 |
|
|
count -= stlen;
|
| 713 |
|
|
total += stlen;
|
| 714 |
|
|
head += stlen;
|
| 715 |
|
|
if (head >= size) {
|
| 716 |
|
|
head = 0;
|
| 717 |
|
|
stlen = tail;
|
| 718 |
|
|
}
|
| 719 |
|
|
}
|
| 720 |
|
|
ch->statusflags |= TXBUSY;
|
| 721 |
|
|
globalwinon(ch);
|
| 722 |
|
|
bc->tin = head;
|
| 723 |
|
|
if ((ch->statusflags & LOWWAIT) == 0) {
|
| 724 |
|
|
ch->statusflags |= LOWWAIT;
|
| 725 |
|
|
bc->ilow = 1;
|
| 726 |
|
|
}
|
| 727 |
|
|
memoff(ch);
|
| 728 |
|
|
restore_flags(flags);
|
| 729 |
|
|
|
| 730 |
|
|
return(total);
|
| 731 |
|
|
}
|
| 732 |
|
|
|
| 733 |
|
|
|
| 734 |
|
|
static void pcxe_put_char(struct tty_struct *tty, unsigned char c)
|
| 735 |
|
|
{
|
| 736 |
|
|
pcxe_write(tty, 0, &c, 1);
|
| 737 |
|
|
return;
|
| 738 |
|
|
}
|
| 739 |
|
|
|
| 740 |
|
|
|
| 741 |
|
|
static int pcxe_write_room(struct tty_struct *tty)
|
| 742 |
|
|
{
|
| 743 |
|
|
struct channel *ch;
|
| 744 |
|
|
int remain;
|
| 745 |
|
|
|
| 746 |
|
|
remain = 0;
|
| 747 |
|
|
if ((ch=chan(tty))!=NULL) {
|
| 748 |
|
|
volatile struct board_chan *bc;
|
| 749 |
|
|
unsigned int head, tail;
|
| 750 |
|
|
unsigned long flags;
|
| 751 |
|
|
|
| 752 |
|
|
save_flags(flags);
|
| 753 |
|
|
cli();
|
| 754 |
|
|
globalwinon(ch);
|
| 755 |
|
|
|
| 756 |
|
|
bc = ch->brdchan;
|
| 757 |
|
|
head = bc->tin & (ch->txbufsize - 1);
|
| 758 |
|
|
tail = bc->tout;
|
| 759 |
|
|
if (tail != bc->tout)
|
| 760 |
|
|
tail = bc->tout;
|
| 761 |
|
|
tail &= (ch->txbufsize - 1);
|
| 762 |
|
|
|
| 763 |
|
|
if((remain = tail - head - 1) < 0 )
|
| 764 |
|
|
remain += ch->txbufsize;
|
| 765 |
|
|
|
| 766 |
|
|
if (remain && (ch->statusflags & LOWWAIT) == 0) {
|
| 767 |
|
|
ch->statusflags |= LOWWAIT;
|
| 768 |
|
|
bc->ilow = 1;
|
| 769 |
|
|
}
|
| 770 |
|
|
memoff(ch);
|
| 771 |
|
|
restore_flags(flags);
|
| 772 |
|
|
}
|
| 773 |
|
|
|
| 774 |
|
|
return remain;
|
| 775 |
|
|
}
|
| 776 |
|
|
|
| 777 |
|
|
|
| 778 |
|
|
static int pcxe_chars_in_buffer(struct tty_struct *tty)
|
| 779 |
|
|
{
|
| 780 |
|
|
int chars;
|
| 781 |
|
|
unsigned int ctail, head, tail;
|
| 782 |
|
|
int remain;
|
| 783 |
|
|
unsigned long flags;
|
| 784 |
|
|
struct channel *ch;
|
| 785 |
|
|
volatile struct board_chan *bc;
|
| 786 |
|
|
|
| 787 |
|
|
if ((ch=chan(tty))==NULL)
|
| 788 |
|
|
return(0);
|
| 789 |
|
|
|
| 790 |
|
|
save_flags(flags);
|
| 791 |
|
|
cli();
|
| 792 |
|
|
globalwinon(ch);
|
| 793 |
|
|
|
| 794 |
|
|
bc = ch->brdchan;
|
| 795 |
|
|
tail = bc->tout;
|
| 796 |
|
|
head = bc->tin;
|
| 797 |
|
|
ctail = ch->mailbox->cout;
|
| 798 |
|
|
if(tail == head && ch->mailbox->cin == ctail && bc->tbusy == 0)
|
| 799 |
|
|
chars = 0;
|
| 800 |
|
|
else {
|
| 801 |
|
|
head = bc->tin & (ch->txbufsize - 1);
|
| 802 |
|
|
tail &= (ch->txbufsize - 1);
|
| 803 |
|
|
if((remain = tail - head - 1) < 0 )
|
| 804 |
|
|
remain += ch->txbufsize;
|
| 805 |
|
|
|
| 806 |
|
|
chars = (int)(ch->txbufsize - remain);
|
| 807 |
|
|
|
| 808 |
|
|
/*
|
| 809 |
|
|
* Make it possible to wakeup anything waiting for output
|
| 810 |
|
|
* in tty_ioctl.c, etc.
|
| 811 |
|
|
*/
|
| 812 |
|
|
if(!(ch->statusflags & EMPTYWAIT))
|
| 813 |
|
|
setup_empty_event(tty,ch);
|
| 814 |
|
|
}
|
| 815 |
|
|
|
| 816 |
|
|
memoff(ch);
|
| 817 |
|
|
restore_flags(flags);
|
| 818 |
|
|
|
| 819 |
|
|
return(chars);
|
| 820 |
|
|
}
|
| 821 |
|
|
|
| 822 |
|
|
|
| 823 |
|
|
static void pcxe_flush_buffer(struct tty_struct *tty)
|
| 824 |
|
|
{
|
| 825 |
|
|
unsigned int tail;
|
| 826 |
|
|
volatile struct board_chan *bc;
|
| 827 |
|
|
struct channel *ch;
|
| 828 |
|
|
unsigned long flags;
|
| 829 |
|
|
|
| 830 |
|
|
if ((ch=chan(tty))==NULL)
|
| 831 |
|
|
return;
|
| 832 |
|
|
|
| 833 |
|
|
save_flags(flags);
|
| 834 |
|
|
cli();
|
| 835 |
|
|
|
| 836 |
|
|
globalwinon(ch);
|
| 837 |
|
|
bc = ch->brdchan;
|
| 838 |
|
|
tail = bc->tout;
|
| 839 |
|
|
fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0);
|
| 840 |
|
|
|
| 841 |
|
|
memoff(ch);
|
| 842 |
|
|
restore_flags(flags);
|
| 843 |
|
|
|
| 844 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 845 |
|
|
if((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup)
|
| 846 |
|
|
(tty->ldisc.write_wakeup)(tty);
|
| 847 |
|
|
}
|
| 848 |
|
|
|
| 849 |
|
|
static void pcxe_flush_chars(struct tty_struct *tty)
|
| 850 |
|
|
{
|
| 851 |
|
|
struct channel * ch;
|
| 852 |
|
|
|
| 853 |
|
|
if ((ch=chan(tty))!=NULL) {
|
| 854 |
|
|
unsigned long flags;
|
| 855 |
|
|
|
| 856 |
|
|
save_flags(flags);
|
| 857 |
|
|
cli();
|
| 858 |
|
|
if ((ch->statusflags & TXBUSY) && !(ch->statusflags & EMPTYWAIT))
|
| 859 |
|
|
setup_empty_event(tty,ch);
|
| 860 |
|
|
restore_flags(flags);
|
| 861 |
|
|
}
|
| 862 |
|
|
}
|
| 863 |
|
|
|
| 864 |
|
|
/* Flag if lilo configuration option is used. If so the
|
| 865 |
|
|
* default settings are removed
|
| 866 |
|
|
*/
|
| 867 |
|
|
|
| 868 |
|
|
static int liloconfig=0;
|
| 869 |
|
|
|
| 870 |
|
|
void pcxx_setup(char *str, int *ints)
|
| 871 |
|
|
{
|
| 872 |
|
|
|
| 873 |
|
|
struct board_info board;
|
| 874 |
|
|
int i, j, last;
|
| 875 |
|
|
char *temp, *t2;
|
| 876 |
|
|
unsigned len;
|
| 877 |
|
|
|
| 878 |
|
|
#if 0
|
| 879 |
|
|
if (!numcards)
|
| 880 |
|
|
memset(&boards, 0, sizeof(boards));
|
| 881 |
|
|
#endif
|
| 882 |
|
|
if (liloconfig==0) { liloconfig=1;numcards=0; }
|
| 883 |
|
|
|
| 884 |
|
|
memset(&board, 0, sizeof(board));
|
| 885 |
|
|
|
| 886 |
|
|
for(last=0,i=1;i<=ints[0];i++)
|
| 887 |
|
|
switch(i)
|
| 888 |
|
|
{
|
| 889 |
|
|
case 1:
|
| 890 |
|
|
board.status = ints[i];
|
| 891 |
|
|
last = i;
|
| 892 |
|
|
break;
|
| 893 |
|
|
|
| 894 |
|
|
case 2:
|
| 895 |
|
|
board.type = ints[i];
|
| 896 |
|
|
last = i;
|
| 897 |
|
|
break;
|
| 898 |
|
|
|
| 899 |
|
|
case 3:
|
| 900 |
|
|
board.altpin = ints[i];
|
| 901 |
|
|
last = i;
|
| 902 |
|
|
break;
|
| 903 |
|
|
|
| 904 |
|
|
case 4:
|
| 905 |
|
|
board.numports = ints[i];
|
| 906 |
|
|
last = i;
|
| 907 |
|
|
break;
|
| 908 |
|
|
|
| 909 |
|
|
case 5:
|
| 910 |
|
|
board.port = ints[i];
|
| 911 |
|
|
last = i;
|
| 912 |
|
|
break;
|
| 913 |
|
|
|
| 914 |
|
|
case 6:
|
| 915 |
|
|
board.membase = ints[i];
|
| 916 |
|
|
last = i;
|
| 917 |
|
|
break;
|
| 918 |
|
|
|
| 919 |
|
|
default:
|
| 920 |
|
|
printk("PC/Xx: Too many integer parms\n");
|
| 921 |
|
|
return;
|
| 922 |
|
|
}
|
| 923 |
|
|
|
| 924 |
|
|
|
| 925 |
|
|
while (str && *str)
|
| 926 |
|
|
{
|
| 927 |
|
|
/* find the next comma or terminator */
|
| 928 |
|
|
temp = str;
|
| 929 |
|
|
while (*temp && (*temp != ','))
|
| 930 |
|
|
temp++;
|
| 931 |
|
|
|
| 932 |
|
|
if (!*temp)
|
| 933 |
|
|
temp = NULL;
|
| 934 |
|
|
else
|
| 935 |
|
|
*temp++ = 0;
|
| 936 |
|
|
|
| 937 |
|
|
i = last + 1;
|
| 938 |
|
|
|
| 939 |
|
|
switch(i)
|
| 940 |
|
|
{
|
| 941 |
|
|
case 1:
|
| 942 |
|
|
len = strlen(str);
|
| 943 |
|
|
if (strncmp("Disable", str, len) == 0)
|
| 944 |
|
|
board.status = 0;
|
| 945 |
|
|
else
|
| 946 |
|
|
if (strncmp("Enable", str, len) == 0)
|
| 947 |
|
|
board.status = 1;
|
| 948 |
|
|
else
|
| 949 |
|
|
{
|
| 950 |
|
|
printk("PC/Xx: Invalid status %s\n", str);
|
| 951 |
|
|
return;
|
| 952 |
|
|
}
|
| 953 |
|
|
last = i;
|
| 954 |
|
|
break;
|
| 955 |
|
|
|
| 956 |
|
|
case 2:
|
| 957 |
|
|
for(j=0;j<PCXX_NUM_TYPES;j++)
|
| 958 |
|
|
if (strcmp(board_desc[j], str) == 0)
|
| 959 |
|
|
break;
|
| 960 |
|
|
|
| 961 |
|
|
if (i<PCXX_NUM_TYPES)
|
| 962 |
|
|
board.type = j;
|
| 963 |
|
|
else
|
| 964 |
|
|
{
|
| 965 |
|
|
printk("PC/Xx: Invalid board name: %s\n", str);
|
| 966 |
|
|
return;
|
| 967 |
|
|
}
|
| 968 |
|
|
last = i;
|
| 969 |
|
|
break;
|
| 970 |
|
|
|
| 971 |
|
|
case 3:
|
| 972 |
|
|
len = strlen(str);
|
| 973 |
|
|
if (strncmp("Disable", str, len) == 0)
|
| 974 |
|
|
board.altpin = 0;
|
| 975 |
|
|
else
|
| 976 |
|
|
if (strncmp("Enable", str, len) == 0)
|
| 977 |
|
|
board.altpin = 1;
|
| 978 |
|
|
else
|
| 979 |
|
|
{
|
| 980 |
|
|
printk("PC/Xx: Invalid altpin %s\n", str);
|
| 981 |
|
|
return;
|
| 982 |
|
|
}
|
| 983 |
|
|
last = i;
|
| 984 |
|
|
break;
|
| 985 |
|
|
|
| 986 |
|
|
case 4:
|
| 987 |
|
|
t2 = str;
|
| 988 |
|
|
#ifndef MODULE
|
| 989 |
|
|
/* is* routines not available in modules
|
| 990 |
|
|
** the need for this should go away when probing is done. :-)
|
| 991 |
|
|
** brian@ilinx.com
|
| 992 |
|
|
*/
|
| 993 |
|
|
while (isdigit(*t2))
|
| 994 |
|
|
t2++;
|
| 995 |
|
|
|
| 996 |
|
|
if (*t2)
|
| 997 |
|
|
{
|
| 998 |
|
|
printk("PC/Xx: Invalid port count %s\n", str);
|
| 999 |
|
|
return;
|
| 1000 |
|
|
}
|
| 1001 |
|
|
#endif
|
| 1002 |
|
|
|
| 1003 |
|
|
board.numports = simple_strtoul(str, NULL, 0);
|
| 1004 |
|
|
last = i;
|
| 1005 |
|
|
break;
|
| 1006 |
|
|
|
| 1007 |
|
|
case 5:
|
| 1008 |
|
|
#ifndef MODULE
|
| 1009 |
|
|
/* is* routines not available in modules
|
| 1010 |
|
|
** the need for this should go away when probing is done. :-)
|
| 1011 |
|
|
** brian@ilinx.com
|
| 1012 |
|
|
*/
|
| 1013 |
|
|
t2 = str;
|
| 1014 |
|
|
while (isxdigit(*t2))
|
| 1015 |
|
|
t2++;
|
| 1016 |
|
|
|
| 1017 |
|
|
if (*t2)
|
| 1018 |
|
|
{
|
| 1019 |
|
|
printk("PC/Xx: Invalid port count %s\n", str);
|
| 1020 |
|
|
return;
|
| 1021 |
|
|
}
|
| 1022 |
|
|
#endif
|
| 1023 |
|
|
|
| 1024 |
|
|
board.port = simple_strtoul(str, NULL, 16);
|
| 1025 |
|
|
last = i;
|
| 1026 |
|
|
break;
|
| 1027 |
|
|
|
| 1028 |
|
|
case 6:
|
| 1029 |
|
|
#ifndef MODULE
|
| 1030 |
|
|
/* is* routines not available in modules
|
| 1031 |
|
|
** the need for this should go away when probing is done. :-)
|
| 1032 |
|
|
** brian@ilinx.com
|
| 1033 |
|
|
*/
|
| 1034 |
|
|
t2 = str;
|
| 1035 |
|
|
while (isxdigit(*t2))
|
| 1036 |
|
|
t2++;
|
| 1037 |
|
|
|
| 1038 |
|
|
if (*t2)
|
| 1039 |
|
|
{
|
| 1040 |
|
|
printk("PC/Xx: Invalid memory base %s\n", str);
|
| 1041 |
|
|
return;
|
| 1042 |
|
|
}
|
| 1043 |
|
|
#endif
|
| 1044 |
|
|
|
| 1045 |
|
|
board.membase = simple_strtoul(str, NULL, 16);
|
| 1046 |
|
|
last = i;
|
| 1047 |
|
|
break;
|
| 1048 |
|
|
|
| 1049 |
|
|
default:
|
| 1050 |
|
|
printk("PC/Xx: Too many string parms\n");
|
| 1051 |
|
|
return;
|
| 1052 |
|
|
}
|
| 1053 |
|
|
str = temp;
|
| 1054 |
|
|
}
|
| 1055 |
|
|
|
| 1056 |
|
|
if (last < 6)
|
| 1057 |
|
|
{
|
| 1058 |
|
|
printk("PC/Xx: Insufficient parms specified\n");
|
| 1059 |
|
|
return;
|
| 1060 |
|
|
}
|
| 1061 |
|
|
|
| 1062 |
|
|
/* I should REALLY validate the stuff here */
|
| 1063 |
|
|
|
| 1064 |
|
|
memcpy(&boards[numcards],&board, sizeof(board));
|
| 1065 |
|
|
printk("PC/Xx: Added board %i, %s %s %i ports at 0x%4.4X base 0x%6.6X\n",
|
| 1066 |
|
|
numcards, board_desc[board.type], board_mem[board.type],
|
| 1067 |
|
|
board.numports, board.port, (unsigned int) board.membase);
|
| 1068 |
|
|
|
| 1069 |
|
|
/* keep track of my initial minor number */
|
| 1070 |
|
|
if (numcards)
|
| 1071 |
|
|
boards[numcards].first_minor = boards[numcards-1].first_minor + boards[numcards-1].numports;
|
| 1072 |
|
|
else
|
| 1073 |
|
|
boards[numcards].first_minor = 0;
|
| 1074 |
|
|
|
| 1075 |
|
|
/* yeha! string parameter was successful! */
|
| 1076 |
|
|
numcards++;
|
| 1077 |
|
|
}
|
| 1078 |
|
|
|
| 1079 |
|
|
|
| 1080 |
|
|
int pcxe_init(void)
|
| 1081 |
|
|
{
|
| 1082 |
|
|
ulong flags, memory_seg=0, memory_size;
|
| 1083 |
|
|
int lowwater, i, crd, shrinkmem=0, topwin = 0xff00L, botwin=0x100L;
|
| 1084 |
|
|
unchar *fepos, *memaddr, *bios, v;
|
| 1085 |
|
|
volatile struct global_data *gd;
|
| 1086 |
|
|
struct board_info *bd;
|
| 1087 |
|
|
volatile struct board_chan *bc;
|
| 1088 |
|
|
struct channel *ch;
|
| 1089 |
|
|
|
| 1090 |
|
|
printk("%s\n", banner);
|
| 1091 |
|
|
|
| 1092 |
|
|
if (numcards <= 0)
|
| 1093 |
|
|
{
|
| 1094 |
|
|
printk("PC/Xx: No cards configured, exiting.\n");
|
| 1095 |
|
|
return(0);
|
| 1096 |
|
|
}
|
| 1097 |
|
|
|
| 1098 |
|
|
for (i=0;i<numcards;i++)
|
| 1099 |
|
|
nbdevs += boards[i].numports;
|
| 1100 |
|
|
|
| 1101 |
|
|
if (nbdevs <= 0)
|
| 1102 |
|
|
{
|
| 1103 |
|
|
printk("PC/Xx: No devices activated, exiting.\n");
|
| 1104 |
|
|
return(0);
|
| 1105 |
|
|
}
|
| 1106 |
|
|
|
| 1107 |
|
|
/*
|
| 1108 |
|
|
* this turns out to be more memory efficient, as there are no
|
| 1109 |
|
|
* unused spaces.
|
| 1110 |
|
|
*/
|
| 1111 |
|
|
digi_channels = kmalloc(sizeof(struct channel) * nbdevs, GFP_KERNEL);
|
| 1112 |
|
|
if (!digi_channels)
|
| 1113 |
|
|
panic("Unable to allocate digi_channel struct");
|
| 1114 |
|
|
memset(digi_channels, 0, sizeof(struct channel) * nbdevs);
|
| 1115 |
|
|
|
| 1116 |
|
|
pcxe_table = kmalloc(sizeof(struct tty_struct *) * nbdevs, GFP_KERNEL);
|
| 1117 |
|
|
if (!pcxe_table)
|
| 1118 |
|
|
panic("Unable to allocate pcxe_table struct");
|
| 1119 |
|
|
memset(pcxe_table, 0, sizeof(struct tty_struct *) * nbdevs);
|
| 1120 |
|
|
|
| 1121 |
|
|
pcxe_termios = kmalloc(sizeof(struct termios *) * nbdevs, GFP_KERNEL);
|
| 1122 |
|
|
if (!pcxe_termios)
|
| 1123 |
|
|
panic("Unable to allocate pcxe_termios struct");
|
| 1124 |
|
|
memset(pcxe_termios,0,sizeof(struct termios *)*nbdevs);
|
| 1125 |
|
|
|
| 1126 |
|
|
pcxe_termios_locked = kmalloc(sizeof(struct termios *) * nbdevs, GFP_KERNEL);
|
| 1127 |
|
|
if (!pcxe_termios_locked)
|
| 1128 |
|
|
panic("Unable to allocate pcxe_termios_locked struct");
|
| 1129 |
|
|
memset(pcxe_termios_locked,0,sizeof(struct termios *)*nbdevs);
|
| 1130 |
|
|
|
| 1131 |
|
|
init_bh(DIGI_BH,do_pcxe_bh);
|
| 1132 |
|
|
enable_bh(DIGI_BH);
|
| 1133 |
|
|
|
| 1134 |
|
|
timer_table[DIGI_TIMER].fn = pcxxpoll;
|
| 1135 |
|
|
timer_table[DIGI_TIMER].expires = 0;
|
| 1136 |
|
|
|
| 1137 |
|
|
memset(&pcxe_driver, 0, sizeof(struct tty_driver));
|
| 1138 |
|
|
pcxe_driver.magic = TTY_DRIVER_MAGIC;
|
| 1139 |
|
|
pcxe_driver.name = "ttyD";
|
| 1140 |
|
|
pcxe_driver.major = DIGI_MAJOR;
|
| 1141 |
|
|
pcxe_driver.minor_start = 0;
|
| 1142 |
|
|
|
| 1143 |
|
|
pcxe_driver.num = nbdevs;
|
| 1144 |
|
|
|
| 1145 |
|
|
pcxe_driver.type = TTY_DRIVER_TYPE_SERIAL;
|
| 1146 |
|
|
pcxe_driver.subtype = SERIAL_TYPE_NORMAL;
|
| 1147 |
|
|
pcxe_driver.init_termios = tty_std_termios;
|
| 1148 |
|
|
pcxe_driver.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL;
|
| 1149 |
|
|
pcxe_driver.flags = TTY_DRIVER_REAL_RAW;
|
| 1150 |
|
|
pcxe_driver.refcount = &pcxe_refcount;
|
| 1151 |
|
|
|
| 1152 |
|
|
pcxe_driver.table = pcxe_table;
|
| 1153 |
|
|
pcxe_driver.termios = pcxe_termios;
|
| 1154 |
|
|
pcxe_driver.termios_locked = pcxe_termios_locked;
|
| 1155 |
|
|
|
| 1156 |
|
|
pcxe_driver.open = pcxe_open;
|
| 1157 |
|
|
pcxe_driver.close = pcxe_close;
|
| 1158 |
|
|
pcxe_driver.write = pcxe_write;
|
| 1159 |
|
|
pcxe_driver.put_char = pcxe_put_char;
|
| 1160 |
|
|
pcxe_driver.flush_chars = pcxe_flush_chars;
|
| 1161 |
|
|
pcxe_driver.write_room = pcxe_write_room;
|
| 1162 |
|
|
pcxe_driver.chars_in_buffer = pcxe_chars_in_buffer;
|
| 1163 |
|
|
pcxe_driver.flush_buffer = pcxe_flush_buffer;
|
| 1164 |
|
|
pcxe_driver.ioctl = pcxe_ioctl;
|
| 1165 |
|
|
pcxe_driver.throttle = pcxe_throttle;
|
| 1166 |
|
|
pcxe_driver.unthrottle = pcxe_unthrottle;
|
| 1167 |
|
|
pcxe_driver.set_termios = pcxe_set_termios;
|
| 1168 |
|
|
pcxe_driver.stop = pcxe_stop;
|
| 1169 |
|
|
pcxe_driver.start = pcxe_start;
|
| 1170 |
|
|
pcxe_driver.hangup = pcxe_hangup;
|
| 1171 |
|
|
|
| 1172 |
|
|
pcxe_callout = pcxe_driver;
|
| 1173 |
|
|
pcxe_callout.name = "cud";
|
| 1174 |
|
|
pcxe_callout.major = DIGICU_MAJOR;
|
| 1175 |
|
|
pcxe_callout.subtype = SERIAL_TYPE_CALLOUT;
|
| 1176 |
|
|
pcxe_callout.init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
|
| 1177 |
|
|
|
| 1178 |
|
|
save_flags(flags);
|
| 1179 |
|
|
cli();
|
| 1180 |
|
|
|
| 1181 |
|
|
for(crd=0; crd < numcards; crd++) {
|
| 1182 |
|
|
bd = &boards[crd];
|
| 1183 |
|
|
outb(FEPRST, bd->port);
|
| 1184 |
|
|
pcxxdelay(1);
|
| 1185 |
|
|
|
| 1186 |
|
|
for(i=0; (inb(bd->port) & FEPMASK) != FEPRST; i++) {
|
| 1187 |
|
|
if(i > 1000) {
|
| 1188 |
|
|
printk("PC/Xx: Board not found at port 0x%x! Check switch settings.\n",
|
| 1189 |
|
|
bd->port);
|
| 1190 |
|
|
bd->status = DISABLED;
|
| 1191 |
|
|
break;
|
| 1192 |
|
|
}
|
| 1193 |
|
|
pcxxdelay(1);
|
| 1194 |
|
|
}
|
| 1195 |
|
|
if(bd->status == DISABLED)
|
| 1196 |
|
|
continue;
|
| 1197 |
|
|
|
| 1198 |
|
|
v = inb(bd->port);
|
| 1199 |
|
|
|
| 1200 |
|
|
if((v & 0x1) == 0x1) {
|
| 1201 |
|
|
if((v & 0x30) == 0) { /* PC/Xi 64K card */
|
| 1202 |
|
|
memory_seg = 0xf000;
|
| 1203 |
|
|
memory_size = 0x10000;
|
| 1204 |
|
|
}
|
| 1205 |
|
|
|
| 1206 |
|
|
if((v & 0x30) == 0x10) { /* PC/Xi 128K card */
|
| 1207 |
|
|
memory_seg = 0xe000;
|
| 1208 |
|
|
memory_size = 0x20000;
|
| 1209 |
|
|
}
|
| 1210 |
|
|
|
| 1211 |
|
|
if((v & 0x30) == 0x20) { /* PC/Xi 256K card */
|
| 1212 |
|
|
memory_seg = 0xc000;
|
| 1213 |
|
|
memory_size = 0x40000;
|
| 1214 |
|
|
}
|
| 1215 |
|
|
|
| 1216 |
|
|
if((v & 0x30) == 0x30) { /* PC/Xi 512K card */
|
| 1217 |
|
|
memory_seg = 0x8000;
|
| 1218 |
|
|
memory_size = 0x80000;
|
| 1219 |
|
|
}
|
| 1220 |
|
|
bd->type = PCXI;
|
| 1221 |
|
|
} else {
|
| 1222 |
|
|
if((v & 0x1) == 0x1) {
|
| 1223 |
|
|
bd->status = DISABLED; /* PC/Xm unsupported card */
|
| 1224 |
|
|
printk("PC/Xx: PC/Xm at 0x%x not supported!!\n", bd->port);
|
| 1225 |
|
|
continue;
|
| 1226 |
|
|
} else {
|
| 1227 |
|
|
if(v & 0xC0) {
|
| 1228 |
|
|
topwin = 0x1f00L;
|
| 1229 |
|
|
outb((((ulong)bd->membase>>8) & 0xe0) | 0x10, bd->port+2);
|
| 1230 |
|
|
outb(((ulong)bd->membase>>16) & 0xff, bd->port+3);
|
| 1231 |
|
|
bd->type = PCXEVE; /* PC/Xe 8K card */
|
| 1232 |
|
|
} else {
|
| 1233 |
|
|
bd->type = PCXE; /* PC/Xe 64K card */
|
| 1234 |
|
|
}
|
| 1235 |
|
|
|
| 1236 |
|
|
memory_seg = 0xf000;
|
| 1237 |
|
|
memory_size = 0x10000;
|
| 1238 |
|
|
}
|
| 1239 |
|
|
}
|
| 1240 |
|
|
|
| 1241 |
|
|
memaddr = (unchar *) bd->membase;
|
| 1242 |
|
|
|
| 1243 |
|
|
outb(FEPRST|FEPMEM, bd->port);
|
| 1244 |
|
|
|
| 1245 |
|
|
for(i=0; (inb(bd->port) & FEPMASK) != (FEPRST|FEPMEM); i++) {
|
| 1246 |
|
|
if(i > 10000) {
|
| 1247 |
|
|
printk("PC/Xx: %s not resetting at port 0x%x! Check switch settings.\n",
|
| 1248 |
|
|
board_desc[bd->type], bd->port);
|
| 1249 |
|
|
bd->status = DISABLED;
|
| 1250 |
|
|
break;
|
| 1251 |
|
|
}
|
| 1252 |
|
|
pcxxdelay(1);
|
| 1253 |
|
|
}
|
| 1254 |
|
|
if(bd->status == DISABLED)
|
| 1255 |
|
|
continue;
|
| 1256 |
|
|
|
| 1257 |
|
|
memwinon(bd,0);
|
| 1258 |
|
|
*(ulong *)(memaddr + botwin) = 0xa55a3cc3;
|
| 1259 |
|
|
*(ulong *)(memaddr + topwin) = 0x5aa5c33c;
|
| 1260 |
|
|
|
| 1261 |
|
|
if(*(ulong *)(memaddr + botwin) != 0xa55a3cc3 ||
|
| 1262 |
|
|
*(ulong *)(memaddr + topwin) != 0x5aa5c33c) {
|
| 1263 |
|
|
printk("PC/Xx: Failed memory test at %lx for %s at port %x, check switch settings.\n",
|
| 1264 |
|
|
bd->membase, board_desc[bd->type], bd->port);
|
| 1265 |
|
|
bd->status = DISABLED;
|
| 1266 |
|
|
continue;
|
| 1267 |
|
|
}
|
| 1268 |
|
|
|
| 1269 |
|
|
for(i=0; i < 16; i++) {
|
| 1270 |
|
|
memaddr[MISCGLOBAL+i] = 0;
|
| 1271 |
|
|
}
|
| 1272 |
|
|
|
| 1273 |
|
|
if(bd->type == PCXI || bd->type == PCXE) {
|
| 1274 |
|
|
bios = memaddr + BIOSCODE + ((0xf000 - memory_seg) << 4);
|
| 1275 |
|
|
|
| 1276 |
|
|
memcpy(bios, pcxx_bios, pcxx_nbios);
|
| 1277 |
|
|
|
| 1278 |
|
|
outb(FEPMEM, bd->port);
|
| 1279 |
|
|
|
| 1280 |
|
|
for(i=0; i <= 10000; i++) {
|
| 1281 |
|
|
if(*(ushort *)((ulong)memaddr + MISCGLOBAL) == *(ushort *)"GD" ) {
|
| 1282 |
|
|
goto load_fep;
|
| 1283 |
|
|
}
|
| 1284 |
|
|
pcxxdelay(1);
|
| 1285 |
|
|
}
|
| 1286 |
|
|
|
| 1287 |
|
|
printk("PC/Xx: BIOS download failed on the %s at 0x%x!\n",
|
| 1288 |
|
|
board_desc[bd->type], bd->port);
|
| 1289 |
|
|
bd->status = DISABLED;
|
| 1290 |
|
|
continue;
|
| 1291 |
|
|
}
|
| 1292 |
|
|
|
| 1293 |
|
|
if(bd->type == PCXEVE) {
|
| 1294 |
|
|
bios = memaddr + (BIOSCODE & 0x1fff);
|
| 1295 |
|
|
memwinon(bd,0xff);
|
| 1296 |
|
|
|
| 1297 |
|
|
memcpy(bios, pcxx_bios, pcxx_nbios);
|
| 1298 |
|
|
|
| 1299 |
|
|
outb(FEPCLR, bd->port);
|
| 1300 |
|
|
memwinon(bd,0);
|
| 1301 |
|
|
|
| 1302 |
|
|
for(i=0; i <= 10000; i++) {
|
| 1303 |
|
|
if(*(ushort *)((ulong)memaddr + MISCGLOBAL) == *(ushort *)"GD" ) {
|
| 1304 |
|
|
goto load_fep;
|
| 1305 |
|
|
}
|
| 1306 |
|
|
pcxxdelay(1);
|
| 1307 |
|
|
}
|
| 1308 |
|
|
|
| 1309 |
|
|
printk("PC/Xx: BIOS download failed on the %s at 0x%x!\n",
|
| 1310 |
|
|
board_desc[bd->type], bd->port);
|
| 1311 |
|
|
bd->status = DISABLED;
|
| 1312 |
|
|
continue;
|
| 1313 |
|
|
}
|
| 1314 |
|
|
|
| 1315 |
|
|
load_fep:
|
| 1316 |
|
|
fepos = memaddr + FEPCODE;
|
| 1317 |
|
|
if(bd->type == PCXEVE)
|
| 1318 |
|
|
fepos = memaddr + (FEPCODE & 0x1fff);
|
| 1319 |
|
|
|
| 1320 |
|
|
memwinon(bd, (FEPCODE >> 13));
|
| 1321 |
|
|
memcpy(fepos, pcxx_cook, pcxx_ncook);
|
| 1322 |
|
|
memwinon(bd, 0);
|
| 1323 |
|
|
|
| 1324 |
|
|
*(ushort *)((ulong)memaddr + MBOX + 0) = 2;
|
| 1325 |
|
|
*(ushort *)((ulong)memaddr + MBOX + 2) = memory_seg + FEPCODESEG;
|
| 1326 |
|
|
*(ushort *)((ulong)memaddr + MBOX + 4) = 0;
|
| 1327 |
|
|
*(ushort *)((ulong)memaddr + MBOX + 6) = FEPCODESEG;
|
| 1328 |
|
|
*(ushort *)((ulong)memaddr + MBOX + 8) = 0;
|
| 1329 |
|
|
*(ushort *)((ulong)memaddr + MBOX + 10) = pcxx_ncook;
|
| 1330 |
|
|
|
| 1331 |
|
|
outb(FEPMEM|FEPINT, bd->port);
|
| 1332 |
|
|
outb(FEPMEM, bd->port);
|
| 1333 |
|
|
|
| 1334 |
|
|
for(i=0; *(ushort *)((ulong)memaddr + MBOX); i++) {
|
| 1335 |
|
|
if(i > 2000) {
|
| 1336 |
|
|
printk("PC/Xx: Command failed for the %s at 0x%x!\n",
|
| 1337 |
|
|
board_desc[bd->type], bd->port);
|
| 1338 |
|
|
bd->status = DISABLED;
|
| 1339 |
|
|
break;
|
| 1340 |
|
|
}
|
| 1341 |
|
|
pcxxdelay(1);
|
| 1342 |
|
|
}
|
| 1343 |
|
|
|
| 1344 |
|
|
if(bd->status == DISABLED)
|
| 1345 |
|
|
continue;
|
| 1346 |
|
|
|
| 1347 |
|
|
*(ushort *)(memaddr + FEPSTAT) = 0;
|
| 1348 |
|
|
*(ushort *)(memaddr + MBOX + 0) = 1;
|
| 1349 |
|
|
*(ushort *)(memaddr + MBOX + 2) = FEPCODESEG;
|
| 1350 |
|
|
*(ushort *)(memaddr + MBOX + 4) = 0x4L;
|
| 1351 |
|
|
|
| 1352 |
|
|
outb(FEPINT, bd->port);
|
| 1353 |
|
|
outb(FEPCLR, bd->port);
|
| 1354 |
|
|
memwinon(bd, 0);
|
| 1355 |
|
|
|
| 1356 |
|
|
for(i=0; *(ushort *)((ulong)memaddr + FEPSTAT) != *(ushort *)"OS"; i++) {
|
| 1357 |
|
|
if(i > 10000) {
|
| 1358 |
|
|
printk("PC/Xx: FEP/OS download failed on the %s at 0x%x!\n",
|
| 1359 |
|
|
board_desc[bd->type], bd->port);
|
| 1360 |
|
|
bd->status = DISABLED;
|
| 1361 |
|
|
break;
|
| 1362 |
|
|
}
|
| 1363 |
|
|
pcxxdelay(1);
|
| 1364 |
|
|
}
|
| 1365 |
|
|
if(bd->status == DISABLED)
|
| 1366 |
|
|
continue;
|
| 1367 |
|
|
|
| 1368 |
|
|
ch = digi_channels+bd->first_minor;
|
| 1369 |
|
|
pcxxassert(ch < digi_channels+nbdevs, "ch out of range");
|
| 1370 |
|
|
|
| 1371 |
|
|
bc = (volatile struct board_chan *)((ulong)memaddr + CHANSTRUCT);
|
| 1372 |
|
|
gd = (volatile struct global_data *)((ulong)memaddr + GLOBAL);
|
| 1373 |
|
|
|
| 1374 |
|
|
if((bd->type == PCXEVE) && (*(ushort *)((ulong)memaddr+NPORT) < 3))
|
| 1375 |
|
|
shrinkmem = 1;
|
| 1376 |
|
|
|
| 1377 |
|
|
request_region(bd->port, 4, "PC/Xx");
|
| 1378 |
|
|
|
| 1379 |
|
|
for(i=0; i < bd->numports; i++, ch++, bc++) {
|
| 1380 |
|
|
if(((ushort *)((ulong)memaddr + PORTBASE))[i] == 0) {
|
| 1381 |
|
|
ch->brdchan = 0;
|
| 1382 |
|
|
continue;
|
| 1383 |
|
|
}
|
| 1384 |
|
|
ch->brdchan = bc;
|
| 1385 |
|
|
ch->mailbox = gd;
|
| 1386 |
|
|
ch->tqueue.routine = do_softint;
|
| 1387 |
|
|
ch->tqueue.data = ch;
|
| 1388 |
|
|
ch->board = &boards[crd];
|
| 1389 |
|
|
#ifdef DEFAULT_HW_FLOW
|
| 1390 |
|
|
ch->digiext.digi_flags = RTSPACE|CTSPACE;
|
| 1391 |
|
|
#endif
|
| 1392 |
|
|
if(boards[crd].altpin) {
|
| 1393 |
|
|
ch->dsr = CD;
|
| 1394 |
|
|
ch->dcd = DSR;
|
| 1395 |
|
|
ch->digiext.digi_flags |= DIGI_ALTPIN;
|
| 1396 |
|
|
} else {
|
| 1397 |
|
|
ch->dcd = CD;
|
| 1398 |
|
|
ch->dsr = DSR;
|
| 1399 |
|
|
}
|
| 1400 |
|
|
|
| 1401 |
|
|
ch->magic = PCXX_MAGIC;
|
| 1402 |
|
|
ch->boardnum = crd;
|
| 1403 |
|
|
ch->channelnum = i;
|
| 1404 |
|
|
|
| 1405 |
|
|
ch->dev = bd->first_minor + i;
|
| 1406 |
|
|
ch->tty = 0;
|
| 1407 |
|
|
|
| 1408 |
|
|
if(shrinkmem) {
|
| 1409 |
|
|
fepcmd(ch, SETBUFFER, 32, 0, 0, 0);
|
| 1410 |
|
|
shrinkmem = 0;
|
| 1411 |
|
|
}
|
| 1412 |
|
|
|
| 1413 |
|
|
if(bd->type != PCXEVE) {
|
| 1414 |
|
|
ch->txptr = memaddr+((bc->tseg-memory_seg) << 4);
|
| 1415 |
|
|
ch->rxptr = memaddr+((bc->rseg-memory_seg) << 4);
|
| 1416 |
|
|
ch->txwin = ch->rxwin = 0;
|
| 1417 |
|
|
} else {
|
| 1418 |
|
|
ch->txptr = memaddr+(((bc->tseg-memory_seg) << 4) & 0x1fff);
|
| 1419 |
|
|
ch->txwin = FEPWIN | ((bc->tseg-memory_seg) >> 9);
|
| 1420 |
|
|
ch->rxptr = memaddr+(((bc->rseg-memory_seg) << 4) & 0x1fff);
|
| 1421 |
|
|
ch->rxwin = FEPWIN | ((bc->rseg-memory_seg) >>9 );
|
| 1422 |
|
|
}
|
| 1423 |
|
|
|
| 1424 |
|
|
ch->txbufsize = bc->tmax + 1;
|
| 1425 |
|
|
ch->rxbufsize = bc->rmax + 1;
|
| 1426 |
|
|
|
| 1427 |
|
|
ch->tmp_buf = kmalloc(ch->txbufsize,GFP_KERNEL);
|
| 1428 |
|
|
|
| 1429 |
|
|
lowwater = ch->txbufsize >= 2000 ? 1024 : ch->txbufsize/2;
|
| 1430 |
|
|
fepcmd(ch, STXLWATER, lowwater, 0, 10, 0);
|
| 1431 |
|
|
fepcmd(ch, SRXLWATER, ch->rxbufsize/4, 0, 10, 0);
|
| 1432 |
|
|
fepcmd(ch, SRXHWATER, 3 * ch->rxbufsize/4, 0, 10, 0);
|
| 1433 |
|
|
|
| 1434 |
|
|
bc->edelay = 100;
|
| 1435 |
|
|
bc->idata = 1;
|
| 1436 |
|
|
|
| 1437 |
|
|
ch->startc = bc->startc;
|
| 1438 |
|
|
ch->stopc = bc->stopc;
|
| 1439 |
|
|
ch->startca = bc->startca;
|
| 1440 |
|
|
ch->stopca = bc->stopca;
|
| 1441 |
|
|
|
| 1442 |
|
|
ch->fepcflag = 0;
|
| 1443 |
|
|
ch->fepiflag = 0;
|
| 1444 |
|
|
ch->fepoflag = 0;
|
| 1445 |
|
|
ch->fepstartc = 0;
|
| 1446 |
|
|
ch->fepstopc = 0;
|
| 1447 |
|
|
ch->fepstartca = 0;
|
| 1448 |
|
|
ch->fepstopca = 0;
|
| 1449 |
|
|
|
| 1450 |
|
|
ch->close_delay = 50;
|
| 1451 |
|
|
ch->count = 0;
|
| 1452 |
|
|
ch->blocked_open = 0;
|
| 1453 |
|
|
ch->callout_termios = pcxe_callout.init_termios;
|
| 1454 |
|
|
ch->normal_termios = pcxe_driver.init_termios;
|
| 1455 |
|
|
ch->open_wait = 0;
|
| 1456 |
|
|
ch->close_wait = 0;
|
| 1457 |
|
|
/* zero out flags as it is unassigned at this point
|
| 1458 |
|
|
* brian@ilinx.com
|
| 1459 |
|
|
*/
|
| 1460 |
|
|
ch->asyncflags = 0;
|
| 1461 |
|
|
}
|
| 1462 |
|
|
|
| 1463 |
|
|
printk("PC/Xx: %s (%s) I/O=0x%x Mem=0x%lx Ports=%d\n",
|
| 1464 |
|
|
board_desc[bd->type], board_mem[bd->type], bd->port,
|
| 1465 |
|
|
bd->membase, bd->numports);
|
| 1466 |
|
|
|
| 1467 |
|
|
memwinoff(bd, 0);
|
| 1468 |
|
|
}
|
| 1469 |
|
|
|
| 1470 |
|
|
if(tty_register_driver(&pcxe_driver))
|
| 1471 |
|
|
panic("Couldn't register PC/Xe driver");
|
| 1472 |
|
|
|
| 1473 |
|
|
if(tty_register_driver(&pcxe_callout))
|
| 1474 |
|
|
panic("Couldn't register PC/Xe callout");
|
| 1475 |
|
|
|
| 1476 |
|
|
#if 0
|
| 1477 |
|
|
loops_per_sec = save_loops_per_sec; /* reset it to what it should be */
|
| 1478 |
|
|
#endif
|
| 1479 |
|
|
|
| 1480 |
|
|
/*
|
| 1481 |
|
|
* Start up the poller to check for events on all enabled boards
|
| 1482 |
|
|
*/
|
| 1483 |
|
|
timer_active |= 1 << DIGI_TIMER;
|
| 1484 |
|
|
restore_flags(flags);
|
| 1485 |
|
|
|
| 1486 |
|
|
return 0;
|
| 1487 |
|
|
}
|
| 1488 |
|
|
|
| 1489 |
|
|
|
| 1490 |
|
|
static void pcxxpoll(void)
|
| 1491 |
|
|
{
|
| 1492 |
|
|
unsigned long flags;
|
| 1493 |
|
|
int crd;
|
| 1494 |
|
|
volatile unsigned int head, tail;
|
| 1495 |
|
|
struct channel *ch;
|
| 1496 |
|
|
struct board_info *bd;
|
| 1497 |
|
|
|
| 1498 |
|
|
save_flags(flags);
|
| 1499 |
|
|
cli();
|
| 1500 |
|
|
|
| 1501 |
|
|
for(crd=0; crd < numcards; crd++) {
|
| 1502 |
|
|
bd = &boards[crd];
|
| 1503 |
|
|
|
| 1504 |
|
|
ch = digi_channels+bd->first_minor;
|
| 1505 |
|
|
|
| 1506 |
|
|
if(bd->status == DISABLED)
|
| 1507 |
|
|
continue;
|
| 1508 |
|
|
|
| 1509 |
|
|
assertmemoff(ch);
|
| 1510 |
|
|
|
| 1511 |
|
|
globalwinon(ch);
|
| 1512 |
|
|
head = ch->mailbox->ein;
|
| 1513 |
|
|
tail = ch->mailbox->eout;
|
| 1514 |
|
|
|
| 1515 |
|
|
if(head != tail)
|
| 1516 |
|
|
doevent(crd);
|
| 1517 |
|
|
|
| 1518 |
|
|
memoff(ch);
|
| 1519 |
|
|
}
|
| 1520 |
|
|
|
| 1521 |
|
|
timer_table[DIGI_TIMER].fn = pcxxpoll;
|
| 1522 |
|
|
timer_table[DIGI_TIMER].expires = jiffies + HZ/25;
|
| 1523 |
|
|
timer_active |= 1 << DIGI_TIMER;
|
| 1524 |
|
|
restore_flags(flags);
|
| 1525 |
|
|
}
|
| 1526 |
|
|
|
| 1527 |
|
|
static void doevent(int crd)
|
| 1528 |
|
|
{
|
| 1529 |
|
|
volatile struct board_info *bd;
|
| 1530 |
|
|
static struct tty_struct *tty;
|
| 1531 |
|
|
volatile struct board_chan *bc;
|
| 1532 |
|
|
volatile unchar *eventbuf;
|
| 1533 |
|
|
volatile unsigned int head;
|
| 1534 |
|
|
volatile unsigned int tail;
|
| 1535 |
|
|
struct channel *ch;
|
| 1536 |
|
|
struct channel *chan0;
|
| 1537 |
|
|
int channel, event, mstat, lstat;
|
| 1538 |
|
|
|
| 1539 |
|
|
bd = &boards[crd];
|
| 1540 |
|
|
|
| 1541 |
|
|
chan0 = digi_channels+bd->first_minor;
|
| 1542 |
|
|
pcxxassert(chan0 < digi_channels+nbdevs, "ch out of range");
|
| 1543 |
|
|
|
| 1544 |
|
|
|
| 1545 |
|
|
assertgwinon(chan0);
|
| 1546 |
|
|
|
| 1547 |
|
|
while ((tail = chan0->mailbox->eout) != (head = chan0->mailbox->ein)) {
|
| 1548 |
|
|
assertgwinon(chan0);
|
| 1549 |
|
|
eventbuf = (volatile unchar *)bd->membase + tail + ISTART;
|
| 1550 |
|
|
channel = eventbuf[0];
|
| 1551 |
|
|
event = eventbuf[1];
|
| 1552 |
|
|
mstat = eventbuf[2];
|
| 1553 |
|
|
lstat = eventbuf[3];
|
| 1554 |
|
|
|
| 1555 |
|
|
ch=chan0+channel;
|
| 1556 |
|
|
|
| 1557 |
|
|
if ((unsigned)channel >= bd->numports || !ch) {
|
| 1558 |
|
|
printk("physmem=%lx, tail=%x, head=%x\n", bd->membase, tail, head);
|
| 1559 |
|
|
printk("doevent(%x) channel %x, event %x, mstat %x, lstat %x\n",
|
| 1560 |
|
|
crd, (unsigned)channel, event, (unsigned)mstat, lstat);
|
| 1561 |
|
|
if(channel >= bd->numports)
|
| 1562 |
|
|
ch = chan0;
|
| 1563 |
|
|
bc = ch->brdchan;
|
| 1564 |
|
|
goto next;
|
| 1565 |
|
|
}
|
| 1566 |
|
|
if ((bc = ch->brdchan) == NULL)
|
| 1567 |
|
|
goto next;
|
| 1568 |
|
|
|
| 1569 |
|
|
if (event & DATA_IND) {
|
| 1570 |
|
|
receive_data(ch);
|
| 1571 |
|
|
assertgwinon(ch);
|
| 1572 |
|
|
}
|
| 1573 |
|
|
|
| 1574 |
|
|
if (event & MODEMCHG_IND) {
|
| 1575 |
|
|
ch->imodem = mstat;
|
| 1576 |
|
|
if (ch->asyncflags & (ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE)) {
|
| 1577 |
|
|
if (ch->asyncflags & ASYNC_CHECK_CD) {
|
| 1578 |
|
|
if (mstat & ch->dcd) {
|
| 1579 |
|
|
wake_up_interruptible(&ch->open_wait);
|
| 1580 |
|
|
} else {
|
| 1581 |
|
|
pcxe_sched_event(ch, PCXE_EVENT_HANGUP);
|
| 1582 |
|
|
}
|
| 1583 |
|
|
}
|
| 1584 |
|
|
}
|
| 1585 |
|
|
}
|
| 1586 |
|
|
|
| 1587 |
|
|
tty = ch->tty;
|
| 1588 |
|
|
|
| 1589 |
|
|
if (tty) {
|
| 1590 |
|
|
|
| 1591 |
|
|
if (event & BREAK_IND) {
|
| 1592 |
|
|
tty->flip.count++;
|
| 1593 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
|
| 1594 |
|
|
*tty->flip.char_buf_ptr++ = 0;
|
| 1595 |
|
|
#if 0
|
| 1596 |
|
|
if (ch->asyncflags & ASYNC_SAK)
|
| 1597 |
|
|
do_SAK(tty);
|
| 1598 |
|
|
#endif
|
| 1599 |
|
|
tty_schedule_flip(tty);
|
| 1600 |
|
|
}
|
| 1601 |
|
|
|
| 1602 |
|
|
if (event & LOWTX_IND) {
|
| 1603 |
|
|
if (ch->statusflags & LOWWAIT) {
|
| 1604 |
|
|
ch->statusflags &= ~LOWWAIT;
|
| 1605 |
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
| 1606 |
|
|
tty->ldisc.write_wakeup)
|
| 1607 |
|
|
(tty->ldisc.write_wakeup)(tty);
|
| 1608 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 1609 |
|
|
}
|
| 1610 |
|
|
}
|
| 1611 |
|
|
|
| 1612 |
|
|
if (event & EMPTYTX_IND) {
|
| 1613 |
|
|
ch->statusflags &= ~TXBUSY;
|
| 1614 |
|
|
if (ch->statusflags & EMPTYWAIT) {
|
| 1615 |
|
|
ch->statusflags &= ~EMPTYWAIT;
|
| 1616 |
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
| 1617 |
|
|
tty->ldisc.write_wakeup)
|
| 1618 |
|
|
(tty->ldisc.write_wakeup)(tty);
|
| 1619 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 1620 |
|
|
}
|
| 1621 |
|
|
}
|
| 1622 |
|
|
}
|
| 1623 |
|
|
|
| 1624 |
|
|
next:
|
| 1625 |
|
|
globalwinon(ch);
|
| 1626 |
|
|
if(!bc) printk("bc == NULL in doevent!\n");
|
| 1627 |
|
|
else bc->idata = 1;
|
| 1628 |
|
|
|
| 1629 |
|
|
chan0->mailbox->eout = (tail+4) & (IMAX-ISTART-4);
|
| 1630 |
|
|
globalwinon(chan0);
|
| 1631 |
|
|
}
|
| 1632 |
|
|
|
| 1633 |
|
|
}
|
| 1634 |
|
|
|
| 1635 |
|
|
|
| 1636 |
|
|
/*
|
| 1637 |
|
|
* pcxxdelay - delays a specified number of milliseconds
|
| 1638 |
|
|
*/
|
| 1639 |
|
|
static void pcxxdelay(int msec)
|
| 1640 |
|
|
{
|
| 1641 |
|
|
while(msec-- > 0)
|
| 1642 |
|
|
__delay(loops_per_sec/1000);
|
| 1643 |
|
|
}
|
| 1644 |
|
|
|
| 1645 |
|
|
|
| 1646 |
|
|
static void
|
| 1647 |
|
|
fepcmd(struct channel *ch, int cmd, int word_or_byte, int byte2, int ncmds,
|
| 1648 |
|
|
int bytecmd)
|
| 1649 |
|
|
{
|
| 1650 |
|
|
unchar *memaddr;
|
| 1651 |
|
|
unsigned int head, tail;
|
| 1652 |
|
|
long count;
|
| 1653 |
|
|
int n;
|
| 1654 |
|
|
|
| 1655 |
|
|
if(ch->board->status == DISABLED)
|
| 1656 |
|
|
return;
|
| 1657 |
|
|
|
| 1658 |
|
|
assertgwinon(ch);
|
| 1659 |
|
|
|
| 1660 |
|
|
memaddr = (unchar *)ch->board->membase;
|
| 1661 |
|
|
head = ch->mailbox->cin;
|
| 1662 |
|
|
|
| 1663 |
|
|
if(head >= (CMAX-CSTART) || (head & 03)) {
|
| 1664 |
|
|
printk("line %d: Out of range, cmd=%x, head=%x\n", __LINE__, cmd, head);
|
| 1665 |
|
|
return;
|
| 1666 |
|
|
}
|
| 1667 |
|
|
|
| 1668 |
|
|
if(bytecmd) {
|
| 1669 |
|
|
*(unchar *)(memaddr+head+CSTART+0) = cmd;
|
| 1670 |
|
|
|
| 1671 |
|
|
*(unchar *)(memaddr+head+CSTART+1) = ch->dev - ch->board->first_minor;
|
| 1672 |
|
|
|
| 1673 |
|
|
*(unchar *)(memaddr+head+CSTART+2) = word_or_byte;
|
| 1674 |
|
|
*(unchar *)(memaddr+head+CSTART+3) = byte2;
|
| 1675 |
|
|
} else {
|
| 1676 |
|
|
*(unchar *)(memaddr+head+CSTART+0) = cmd;
|
| 1677 |
|
|
|
| 1678 |
|
|
*(unchar *)(memaddr+head+CSTART+1) = ch->dev - ch->board->first_minor;
|
| 1679 |
|
|
*(ushort*)(memaddr+head+CSTART+2) = word_or_byte;
|
| 1680 |
|
|
}
|
| 1681 |
|
|
|
| 1682 |
|
|
head = (head+4) & (CMAX-CSTART-4);
|
| 1683 |
|
|
ch->mailbox->cin = head;
|
| 1684 |
|
|
|
| 1685 |
|
|
count = FEPTIMEOUT;
|
| 1686 |
|
|
|
| 1687 |
|
|
while(1) {
|
| 1688 |
|
|
count--;
|
| 1689 |
|
|
if(count == 0) {
|
| 1690 |
|
|
printk("Fep not responding in fepcmd()\n");
|
| 1691 |
|
|
return;
|
| 1692 |
|
|
}
|
| 1693 |
|
|
|
| 1694 |
|
|
head = ch->mailbox->cin;
|
| 1695 |
|
|
tail = ch->mailbox->cout;
|
| 1696 |
|
|
|
| 1697 |
|
|
n = (head-tail) & (CMAX-CSTART-4);
|
| 1698 |
|
|
|
| 1699 |
|
|
if(n <= ncmds * (sizeof(short)*4))
|
| 1700 |
|
|
break;
|
| 1701 |
|
|
}
|
| 1702 |
|
|
}
|
| 1703 |
|
|
|
| 1704 |
|
|
|
| 1705 |
|
|
static unsigned termios2digi_c(struct channel *ch, unsigned cflag)
|
| 1706 |
|
|
{
|
| 1707 |
|
|
unsigned res = 0;
|
| 1708 |
|
|
#ifdef SPEED_HACK
|
| 1709 |
|
|
/* CL: HACK to force 115200 at 38400 and 57600 at 19200 Baud */
|
| 1710 |
|
|
if ((cflag & CBAUD)== B38400) cflag=cflag - B38400 + B115200;
|
| 1711 |
|
|
if ((cflag & CBAUD)== B19200) cflag=cflag - B19200 + B57600;
|
| 1712 |
|
|
#endif
|
| 1713 |
|
|
if (cflag & CBAUDEX)
|
| 1714 |
|
|
{
|
| 1715 |
|
|
ch->digiext.digi_flags |= DIGI_FAST;
|
| 1716 |
|
|
res |= FEP_HUPCL;
|
| 1717 |
|
|
/* This gets strange but if we don't do this we will get 78600
|
| 1718 |
|
|
* instead of 115200. 57600 is mapped to 50 baud yielding 57600 in
|
| 1719 |
|
|
* FAST mode. 115200 is mapped to 75. We need to map it to 110 to
|
| 1720 |
|
|
* do 115K
|
| 1721 |
|
|
*/
|
| 1722 |
|
|
if (cflag & B115200) res|=1;
|
| 1723 |
|
|
}
|
| 1724 |
|
|
else ch->digiext.digi_flags &= ~DIGI_FAST;
|
| 1725 |
|
|
res |= cflag & (CBAUD | PARODD | PARENB | CSTOPB | CSIZE | CLOCAL);
|
| 1726 |
|
|
return res;
|
| 1727 |
|
|
}
|
| 1728 |
|
|
|
| 1729 |
|
|
static unsigned termios2digi_i(struct channel *ch, unsigned iflag)
|
| 1730 |
|
|
{
|
| 1731 |
|
|
unsigned res = iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|ISTRIP|IXON|IXANY|IXOFF);
|
| 1732 |
|
|
|
| 1733 |
|
|
if(ch->digiext.digi_flags & DIGI_AIXON)
|
| 1734 |
|
|
res |= IAIXON;
|
| 1735 |
|
|
return res;
|
| 1736 |
|
|
}
|
| 1737 |
|
|
|
| 1738 |
|
|
static unsigned termios2digi_h(struct channel *ch, unsigned cflag)
|
| 1739 |
|
|
{
|
| 1740 |
|
|
unsigned res = 0;
|
| 1741 |
|
|
|
| 1742 |
|
|
if(cflag & CRTSCTS) {
|
| 1743 |
|
|
ch->digiext.digi_flags |= (RTSPACE|CTSPACE);
|
| 1744 |
|
|
res |= (CTS | RTS);
|
| 1745 |
|
|
}
|
| 1746 |
|
|
if(ch->digiext.digi_flags & RTSPACE)
|
| 1747 |
|
|
res |= RTS;
|
| 1748 |
|
|
if(ch->digiext.digi_flags & DTRPACE)
|
| 1749 |
|
|
res |= DTR;
|
| 1750 |
|
|
if(ch->digiext.digi_flags & CTSPACE)
|
| 1751 |
|
|
res |= CTS;
|
| 1752 |
|
|
if(ch->digiext.digi_flags & DSRPACE)
|
| 1753 |
|
|
res |= ch->dsr;
|
| 1754 |
|
|
if(ch->digiext.digi_flags & DCDPACE)
|
| 1755 |
|
|
res |= ch->dcd;
|
| 1756 |
|
|
|
| 1757 |
|
|
if (res & RTS)
|
| 1758 |
|
|
ch->digiext.digi_flags |= RTSPACE;
|
| 1759 |
|
|
if (res & CTS)
|
| 1760 |
|
|
ch->digiext.digi_flags |= CTSPACE;
|
| 1761 |
|
|
|
| 1762 |
|
|
return res;
|
| 1763 |
|
|
}
|
| 1764 |
|
|
|
| 1765 |
|
|
static void pcxxparam(struct tty_struct *tty, struct channel *ch)
|
| 1766 |
|
|
{
|
| 1767 |
|
|
volatile struct board_chan *bc;
|
| 1768 |
|
|
unsigned int head;
|
| 1769 |
|
|
unsigned mval, hflow, cflag, iflag;
|
| 1770 |
|
|
struct termios *ts;
|
| 1771 |
|
|
|
| 1772 |
|
|
bc = ch->brdchan;
|
| 1773 |
|
|
assertgwinon(ch);
|
| 1774 |
|
|
ts = tty->termios;
|
| 1775 |
|
|
|
| 1776 |
|
|
if((ts->c_cflag & CBAUD) == 0) {
|
| 1777 |
|
|
head = bc->rin;
|
| 1778 |
|
|
bc->rout = head;
|
| 1779 |
|
|
head = bc->tin;
|
| 1780 |
|
|
fepcmd(ch, STOUT, (unsigned) head, 0, 0, 0);
|
| 1781 |
|
|
mval = 0;
|
| 1782 |
|
|
} else {
|
| 1783 |
|
|
|
| 1784 |
|
|
cflag = termios2digi_c(ch, ts->c_cflag);
|
| 1785 |
|
|
|
| 1786 |
|
|
if(cflag != ch->fepcflag) {
|
| 1787 |
|
|
ch->fepcflag = cflag;
|
| 1788 |
|
|
fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0);
|
| 1789 |
|
|
}
|
| 1790 |
|
|
|
| 1791 |
|
|
if(cflag & CLOCAL)
|
| 1792 |
|
|
ch->asyncflags &= ~ASYNC_CHECK_CD;
|
| 1793 |
|
|
else {
|
| 1794 |
|
|
ch->asyncflags |= ASYNC_CHECK_CD;
|
| 1795 |
|
|
}
|
| 1796 |
|
|
|
| 1797 |
|
|
mval = DTR | RTS;
|
| 1798 |
|
|
}
|
| 1799 |
|
|
|
| 1800 |
|
|
iflag = termios2digi_i(ch, ts->c_iflag);
|
| 1801 |
|
|
|
| 1802 |
|
|
if(iflag != ch->fepiflag) {
|
| 1803 |
|
|
ch->fepiflag = iflag;
|
| 1804 |
|
|
fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0);
|
| 1805 |
|
|
}
|
| 1806 |
|
|
|
| 1807 |
|
|
bc->mint = ch->dcd;
|
| 1808 |
|
|
if((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD))
|
| 1809 |
|
|
if(ch->digiext.digi_flags & DIGI_FORCEDCD)
|
| 1810 |
|
|
bc->mint = 0;
|
| 1811 |
|
|
|
| 1812 |
|
|
ch->imodem = bc->mstat;
|
| 1813 |
|
|
|
| 1814 |
|
|
hflow = termios2digi_h(ch, ts->c_cflag);
|
| 1815 |
|
|
|
| 1816 |
|
|
if(hflow != ch->hflow) {
|
| 1817 |
|
|
ch->hflow = hflow;
|
| 1818 |
|
|
fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1);
|
| 1819 |
|
|
}
|
| 1820 |
|
|
|
| 1821 |
|
|
/* mval ^= ch->modemfake & (mval ^ ch->modem); */
|
| 1822 |
|
|
|
| 1823 |
|
|
if(ch->omodem != mval) {
|
| 1824 |
|
|
ch->omodem = mval;
|
| 1825 |
|
|
fepcmd(ch, SETMODEM, mval, RTS|DTR, 0, 1);
|
| 1826 |
|
|
}
|
| 1827 |
|
|
|
| 1828 |
|
|
if(ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) {
|
| 1829 |
|
|
ch->fepstartc = ch->startc;
|
| 1830 |
|
|
ch->fepstopc = ch->stopc;
|
| 1831 |
|
|
fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1);
|
| 1832 |
|
|
}
|
| 1833 |
|
|
|
| 1834 |
|
|
if(ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) {
|
| 1835 |
|
|
ch->fepstartca = ch->startca;
|
| 1836 |
|
|
ch->fepstopca = ch->stopca;
|
| 1837 |
|
|
fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1);
|
| 1838 |
|
|
}
|
| 1839 |
|
|
}
|
| 1840 |
|
|
|
| 1841 |
|
|
|
| 1842 |
|
|
static void receive_data(struct channel *ch)
|
| 1843 |
|
|
{
|
| 1844 |
|
|
volatile struct board_chan *bc;
|
| 1845 |
|
|
struct tty_struct *tty;
|
| 1846 |
|
|
unsigned int tail, head, wrapmask;
|
| 1847 |
|
|
int n;
|
| 1848 |
|
|
int piece;
|
| 1849 |
|
|
struct termios *ts=0;
|
| 1850 |
|
|
unchar *rptr;
|
| 1851 |
|
|
int rc;
|
| 1852 |
|
|
int wrapgap;
|
| 1853 |
|
|
|
| 1854 |
|
|
globalwinon(ch);
|
| 1855 |
|
|
|
| 1856 |
|
|
if (ch->statusflags & RXSTOPPED)
|
| 1857 |
|
|
return;
|
| 1858 |
|
|
|
| 1859 |
|
|
tty = ch->tty;
|
| 1860 |
|
|
if(tty)
|
| 1861 |
|
|
ts = tty->termios;
|
| 1862 |
|
|
|
| 1863 |
|
|
bc = ch->brdchan;
|
| 1864 |
|
|
|
| 1865 |
|
|
if(!bc) {
|
| 1866 |
|
|
printk("bc is NULL in receive_data!\n");
|
| 1867 |
|
|
return;
|
| 1868 |
|
|
}
|
| 1869 |
|
|
|
| 1870 |
|
|
wrapmask = ch->rxbufsize - 1;
|
| 1871 |
|
|
|
| 1872 |
|
|
head = bc->rin;
|
| 1873 |
|
|
head &= wrapmask;
|
| 1874 |
|
|
tail = bc->rout & wrapmask;
|
| 1875 |
|
|
|
| 1876 |
|
|
n = (head-tail) & wrapmask;
|
| 1877 |
|
|
|
| 1878 |
|
|
if(n == 0)
|
| 1879 |
|
|
return;
|
| 1880 |
|
|
|
| 1881 |
|
|
/*
|
| 1882 |
|
|
* If CREAD bit is off or device not open, set TX tail to head
|
| 1883 |
|
|
*/
|
| 1884 |
|
|
if(!tty || !ts || !(ts->c_cflag & CREAD)) {
|
| 1885 |
|
|
bc->rout = head;
|
| 1886 |
|
|
return;
|
| 1887 |
|
|
}
|
| 1888 |
|
|
|
| 1889 |
|
|
if(tty->flip.count == TTY_FLIPBUF_SIZE) {
|
| 1890 |
|
|
/* printk("tty->flip.count = TTY_FLIPBUF_SIZE\n"); */
|
| 1891 |
|
|
return;
|
| 1892 |
|
|
}
|
| 1893 |
|
|
|
| 1894 |
|
|
if(bc->orun) {
|
| 1895 |
|
|
bc->orun = 0;
|
| 1896 |
|
|
printk("overrun! DigiBoard device minor=%d\n",MINOR(tty->device));
|
| 1897 |
|
|
}
|
| 1898 |
|
|
|
| 1899 |
|
|
rxwinon(ch);
|
| 1900 |
|
|
rptr = tty->flip.char_buf_ptr;
|
| 1901 |
|
|
rc = tty->flip.count;
|
| 1902 |
|
|
while(n > 0) {
|
| 1903 |
|
|
wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail;
|
| 1904 |
|
|
piece = (wrapgap < n) ? wrapgap : n;
|
| 1905 |
|
|
|
| 1906 |
|
|
/*
|
| 1907 |
|
|
* Make sure we don't overflow the buffer
|
| 1908 |
|
|
*/
|
| 1909 |
|
|
|
| 1910 |
|
|
if ((rc + piece) > TTY_FLIPBUF_SIZE)
|
| 1911 |
|
|
piece = TTY_FLIPBUF_SIZE - rc;
|
| 1912 |
|
|
|
| 1913 |
|
|
if (piece == 0)
|
| 1914 |
|
|
break;
|
| 1915 |
|
|
|
| 1916 |
|
|
memcpy(rptr, ch->rxptr + tail, piece);
|
| 1917 |
|
|
rptr += piece;
|
| 1918 |
|
|
rc += piece;
|
| 1919 |
|
|
tail = (tail + piece) & wrapmask;
|
| 1920 |
|
|
n -= piece;
|
| 1921 |
|
|
}
|
| 1922 |
|
|
tty->flip.count = rc;
|
| 1923 |
|
|
tty->flip.char_buf_ptr = rptr;
|
| 1924 |
|
|
globalwinon(ch);
|
| 1925 |
|
|
bc->rout = tail;
|
| 1926 |
|
|
|
| 1927 |
|
|
/* Must be called with global data */
|
| 1928 |
|
|
tty_schedule_flip(ch->tty);
|
| 1929 |
|
|
return;
|
| 1930 |
|
|
}
|
| 1931 |
|
|
|
| 1932 |
|
|
|
| 1933 |
|
|
static int pcxe_ioctl(struct tty_struct *tty, struct file * file,
|
| 1934 |
|
|
unsigned int cmd, unsigned long arg)
|
| 1935 |
|
|
{
|
| 1936 |
|
|
int error;
|
| 1937 |
|
|
struct channel *ch = (struct channel *) tty->driver_data;
|
| 1938 |
|
|
volatile struct board_chan *bc;
|
| 1939 |
|
|
int retval;
|
| 1940 |
|
|
unsigned int mflag, mstat;
|
| 1941 |
|
|
unsigned char startc, stopc;
|
| 1942 |
|
|
unsigned long flags;
|
| 1943 |
|
|
digiflow_t dflow;
|
| 1944 |
|
|
|
| 1945 |
|
|
if(ch)
|
| 1946 |
|
|
bc = ch->brdchan;
|
| 1947 |
|
|
else {
|
| 1948 |
|
|
printk("ch is NULL in pcxe_ioctl!\n");
|
| 1949 |
|
|
return(-EINVAL);
|
| 1950 |
|
|
}
|
| 1951 |
|
|
|
| 1952 |
|
|
save_flags(flags);
|
| 1953 |
|
|
|
| 1954 |
|
|
switch(cmd) {
|
| 1955 |
|
|
case TCSBRK: /* SVID version: non-zero arg --> no break */
|
| 1956 |
|
|
retval = tty_check_change(tty);
|
| 1957 |
|
|
if(retval)
|
| 1958 |
|
|
return retval;
|
| 1959 |
|
|
setup_empty_event(tty,ch);
|
| 1960 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1961 |
|
|
if(!arg)
|
| 1962 |
|
|
digi_send_break(ch, HZ/4); /* 1/4 second */
|
| 1963 |
|
|
return 0;
|
| 1964 |
|
|
|
| 1965 |
|
|
case TCSBRKP: /* support for POSIX tcsendbreak() */
|
| 1966 |
|
|
retval = tty_check_change(tty);
|
| 1967 |
|
|
if(retval)
|
| 1968 |
|
|
return retval;
|
| 1969 |
|
|
setup_empty_event(tty,ch);
|
| 1970 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1971 |
|
|
digi_send_break(ch, arg ? arg*(HZ/10) : HZ/4);
|
| 1972 |
|
|
return 0;
|
| 1973 |
|
|
|
| 1974 |
|
|
case TIOCGSOFTCAR:
|
| 1975 |
|
|
error = verify_area(VERIFY_WRITE, (void *) arg,sizeof(long));
|
| 1976 |
|
|
if(error)
|
| 1977 |
|
|
return error;
|
| 1978 |
|
|
put_fs_long(C_CLOCAL(tty) ? 1 : 0,
|
| 1979 |
|
|
(unsigned long *) arg);
|
| 1980 |
|
|
return 0;
|
| 1981 |
|
|
|
| 1982 |
|
|
case TIOCSSOFTCAR:
|
| 1983 |
|
|
error = verify_area(VERIFY_READ, (void *) arg,sizeof(long));
|
| 1984 |
|
|
if(error)
|
| 1985 |
|
|
return error;
|
| 1986 |
|
|
arg = get_fs_long((unsigned long *) arg);
|
| 1987 |
|
|
tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
|
| 1988 |
|
|
return 0;
|
| 1989 |
|
|
|
| 1990 |
|
|
case TIOCMODG:
|
| 1991 |
|
|
case TIOCMGET:
|
| 1992 |
|
|
mflag = 0;
|
| 1993 |
|
|
|
| 1994 |
|
|
cli();
|
| 1995 |
|
|
globalwinon(ch);
|
| 1996 |
|
|
mstat = bc->mstat;
|
| 1997 |
|
|
memoff(ch);
|
| 1998 |
|
|
restore_flags(flags);
|
| 1999 |
|
|
|
| 2000 |
|
|
if(mstat & DTR)
|
| 2001 |
|
|
mflag |= TIOCM_DTR;
|
| 2002 |
|
|
if(mstat & RTS)
|
| 2003 |
|
|
mflag |= TIOCM_RTS;
|
| 2004 |
|
|
if(mstat & CTS)
|
| 2005 |
|
|
mflag |= TIOCM_CTS;
|
| 2006 |
|
|
if(mstat & ch->dsr)
|
| 2007 |
|
|
mflag |= TIOCM_DSR;
|
| 2008 |
|
|
if(mstat & RI)
|
| 2009 |
|
|
mflag |= TIOCM_RI;
|
| 2010 |
|
|
if(mstat & ch->dcd)
|
| 2011 |
|
|
mflag |= TIOCM_CD;
|
| 2012 |
|
|
|
| 2013 |
|
|
error = verify_area(VERIFY_WRITE, (void *) arg,sizeof(long));
|
| 2014 |
|
|
if(error)
|
| 2015 |
|
|
return error;
|
| 2016 |
|
|
put_fs_long(mflag, (unsigned long *) arg);
|
| 2017 |
|
|
break;
|
| 2018 |
|
|
|
| 2019 |
|
|
case TIOCMBIS:
|
| 2020 |
|
|
case TIOCMBIC:
|
| 2021 |
|
|
case TIOCMODS:
|
| 2022 |
|
|
case TIOCMSET:
|
| 2023 |
|
|
error = verify_area(VERIFY_READ, (void *) arg,sizeof(long));
|
| 2024 |
|
|
if(error)
|
| 2025 |
|
|
return error;
|
| 2026 |
|
|
mstat = get_fs_long((unsigned long *) arg);
|
| 2027 |
|
|
|
| 2028 |
|
|
mflag = 0;
|
| 2029 |
|
|
if(mstat & TIOCM_DTR)
|
| 2030 |
|
|
mflag |= DTR;
|
| 2031 |
|
|
if(mstat & TIOCM_RTS)
|
| 2032 |
|
|
mflag |= RTS;
|
| 2033 |
|
|
|
| 2034 |
|
|
switch(cmd) {
|
| 2035 |
|
|
case TIOCMODS:
|
| 2036 |
|
|
case TIOCMSET:
|
| 2037 |
|
|
ch->modemfake = DTR|RTS;
|
| 2038 |
|
|
ch->modem = mflag;
|
| 2039 |
|
|
break;
|
| 2040 |
|
|
|
| 2041 |
|
|
case TIOCMBIS:
|
| 2042 |
|
|
ch->modemfake |= mflag;
|
| 2043 |
|
|
ch->modem |= mflag;
|
| 2044 |
|
|
break;
|
| 2045 |
|
|
|
| 2046 |
|
|
case TIOCMBIC:
|
| 2047 |
|
|
ch->modemfake &= ~mflag;
|
| 2048 |
|
|
ch->modem &= ~mflag;
|
| 2049 |
|
|
break;
|
| 2050 |
|
|
}
|
| 2051 |
|
|
|
| 2052 |
|
|
cli();
|
| 2053 |
|
|
globalwinon(ch);
|
| 2054 |
|
|
pcxxparam(tty,ch);
|
| 2055 |
|
|
memoff(ch);
|
| 2056 |
|
|
restore_flags(flags);
|
| 2057 |
|
|
break;
|
| 2058 |
|
|
|
| 2059 |
|
|
case TIOCSDTR:
|
| 2060 |
|
|
cli();
|
| 2061 |
|
|
ch->omodem |= DTR;
|
| 2062 |
|
|
globalwinon(ch);
|
| 2063 |
|
|
fepcmd(ch, SETMODEM, DTR, 0, 10, 1);
|
| 2064 |
|
|
memoff(ch);
|
| 2065 |
|
|
restore_flags(flags);
|
| 2066 |
|
|
break;
|
| 2067 |
|
|
|
| 2068 |
|
|
case TIOCCDTR:
|
| 2069 |
|
|
ch->omodem &= ~DTR;
|
| 2070 |
|
|
cli();
|
| 2071 |
|
|
globalwinon(ch);
|
| 2072 |
|
|
fepcmd(ch, SETMODEM, 0, DTR, 10, 1);
|
| 2073 |
|
|
memoff(ch);
|
| 2074 |
|
|
restore_flags(flags);
|
| 2075 |
|
|
break;
|
| 2076 |
|
|
|
| 2077 |
|
|
case DIGI_GETA:
|
| 2078 |
|
|
if((error=verify_area(VERIFY_WRITE, (char*)arg, sizeof(digi_t))))
|
| 2079 |
|
|
return(error);
|
| 2080 |
|
|
|
| 2081 |
|
|
memcpy_tofs((char*)arg, &ch->digiext, sizeof(digi_t));
|
| 2082 |
|
|
break;
|
| 2083 |
|
|
|
| 2084 |
|
|
case DIGI_SETAW:
|
| 2085 |
|
|
case DIGI_SETAF:
|
| 2086 |
|
|
if(cmd == DIGI_SETAW) {
|
| 2087 |
|
|
setup_empty_event(tty,ch);
|
| 2088 |
|
|
tty_wait_until_sent(tty, 0);
|
| 2089 |
|
|
}
|
| 2090 |
|
|
else {
|
| 2091 |
|
|
if(tty->ldisc.flush_buffer)
|
| 2092 |
|
|
tty->ldisc.flush_buffer(tty);
|
| 2093 |
|
|
}
|
| 2094 |
|
|
|
| 2095 |
|
|
/* Fall Thru */
|
| 2096 |
|
|
|
| 2097 |
|
|
case DIGI_SETA:
|
| 2098 |
|
|
if((error=verify_area(VERIFY_READ, (char*)arg,sizeof(digi_t))))
|
| 2099 |
|
|
return(error);
|
| 2100 |
|
|
|
| 2101 |
|
|
memcpy_fromfs(&ch->digiext, (char*)arg, sizeof(digi_t));
|
| 2102 |
|
|
#ifdef DEBUG_IOCTL
|
| 2103 |
|
|
printk("ioctl(DIGI_SETA): flags = %x\n", ch->digiext.digi_flags);
|
| 2104 |
|
|
#endif
|
| 2105 |
|
|
|
| 2106 |
|
|
if(ch->digiext.digi_flags & DIGI_ALTPIN) {
|
| 2107 |
|
|
ch->dcd = DSR;
|
| 2108 |
|
|
ch->dsr = CD;
|
| 2109 |
|
|
} else {
|
| 2110 |
|
|
ch->dcd = CD;
|
| 2111 |
|
|
ch->dsr = DSR;
|
| 2112 |
|
|
}
|
| 2113 |
|
|
|
| 2114 |
|
|
cli();
|
| 2115 |
|
|
globalwinon(ch);
|
| 2116 |
|
|
pcxxparam(tty,ch);
|
| 2117 |
|
|
memoff(ch);
|
| 2118 |
|
|
restore_flags(flags);
|
| 2119 |
|
|
break;
|
| 2120 |
|
|
|
| 2121 |
|
|
case DIGI_GETFLOW:
|
| 2122 |
|
|
case DIGI_GETAFLOW:
|
| 2123 |
|
|
cli();
|
| 2124 |
|
|
globalwinon(ch);
|
| 2125 |
|
|
if(cmd == DIGI_GETFLOW) {
|
| 2126 |
|
|
dflow.startc = bc->startc;
|
| 2127 |
|
|
dflow.stopc = bc->stopc;
|
| 2128 |
|
|
} else {
|
| 2129 |
|
|
dflow.startc = bc->startca;
|
| 2130 |
|
|
dflow.stopc = bc->stopca;
|
| 2131 |
|
|
}
|
| 2132 |
|
|
memoff(ch);
|
| 2133 |
|
|
restore_flags(flags);
|
| 2134 |
|
|
|
| 2135 |
|
|
if((error=verify_area(VERIFY_WRITE, (char*)arg,sizeof(dflow))))
|
| 2136 |
|
|
return(error);
|
| 2137 |
|
|
|
| 2138 |
|
|
memcpy_tofs((char*)arg, &dflow, sizeof(dflow));
|
| 2139 |
|
|
break;
|
| 2140 |
|
|
|
| 2141 |
|
|
case DIGI_SETAFLOW:
|
| 2142 |
|
|
case DIGI_SETFLOW:
|
| 2143 |
|
|
if(cmd == DIGI_SETFLOW) {
|
| 2144 |
|
|
startc = ch->startc;
|
| 2145 |
|
|
stopc = ch->stopc;
|
| 2146 |
|
|
} else {
|
| 2147 |
|
|
startc = ch->startca;
|
| 2148 |
|
|
stopc = ch->stopca;
|
| 2149 |
|
|
}
|
| 2150 |
|
|
|
| 2151 |
|
|
if((error=verify_area(VERIFY_READ, (char*)arg,sizeof(dflow))))
|
| 2152 |
|
|
return(error);
|
| 2153 |
|
|
|
| 2154 |
|
|
memcpy_fromfs(&dflow, (char*)arg, sizeof(dflow));
|
| 2155 |
|
|
|
| 2156 |
|
|
if(dflow.startc != startc || dflow.stopc != stopc) {
|
| 2157 |
|
|
cli();
|
| 2158 |
|
|
globalwinon(ch);
|
| 2159 |
|
|
|
| 2160 |
|
|
if(cmd == DIGI_SETFLOW) {
|
| 2161 |
|
|
ch->fepstartc = ch->startc = dflow.startc;
|
| 2162 |
|
|
ch->fepstopc = ch->stopc = dflow.stopc;
|
| 2163 |
|
|
fepcmd(ch,SONOFFC,ch->fepstartc,ch->fepstopc,0, 1);
|
| 2164 |
|
|
} else {
|
| 2165 |
|
|
ch->fepstartca = ch->startca = dflow.startc;
|
| 2166 |
|
|
ch->fepstopca = ch->stopca = dflow.stopc;
|
| 2167 |
|
|
fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1);
|
| 2168 |
|
|
}
|
| 2169 |
|
|
|
| 2170 |
|
|
if(ch->statusflags & TXSTOPPED)
|
| 2171 |
|
|
pcxe_start(tty);
|
| 2172 |
|
|
|
| 2173 |
|
|
memoff(ch);
|
| 2174 |
|
|
restore_flags(flags);
|
| 2175 |
|
|
}
|
| 2176 |
|
|
break;
|
| 2177 |
|
|
|
| 2178 |
|
|
default:
|
| 2179 |
|
|
return -ENOIOCTLCMD;
|
| 2180 |
|
|
}
|
| 2181 |
|
|
|
| 2182 |
|
|
return 0;
|
| 2183 |
|
|
}
|
| 2184 |
|
|
|
| 2185 |
|
|
static void pcxe_set_termios(struct tty_struct *tty, struct termios *old_termios)
|
| 2186 |
|
|
{
|
| 2187 |
|
|
struct channel *info;
|
| 2188 |
|
|
|
| 2189 |
|
|
if ((info=chan(tty))!=NULL) {
|
| 2190 |
|
|
unsigned long flags;
|
| 2191 |
|
|
save_flags(flags);
|
| 2192 |
|
|
cli();
|
| 2193 |
|
|
globalwinon(info);
|
| 2194 |
|
|
pcxxparam(tty,info);
|
| 2195 |
|
|
memoff(info);
|
| 2196 |
|
|
|
| 2197 |
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
| 2198 |
|
|
((tty->termios->c_cflag & CRTSCTS) == 0))
|
| 2199 |
|
|
tty->hw_stopped = 0;
|
| 2200 |
|
|
if(!(old_termios->c_cflag & CLOCAL) &&
|
| 2201 |
|
|
(tty->termios->c_cflag & CLOCAL))
|
| 2202 |
|
|
wake_up_interruptible(&info->open_wait);
|
| 2203 |
|
|
restore_flags(flags);
|
| 2204 |
|
|
}
|
| 2205 |
|
|
}
|
| 2206 |
|
|
|
| 2207 |
|
|
|
| 2208 |
|
|
static void do_pcxe_bh(void)
|
| 2209 |
|
|
{
|
| 2210 |
|
|
run_task_queue(&tq_pcxx);
|
| 2211 |
|
|
}
|
| 2212 |
|
|
|
| 2213 |
|
|
|
| 2214 |
|
|
static void do_softint(void *private_)
|
| 2215 |
|
|
{
|
| 2216 |
|
|
struct channel *info = (struct channel *) private_;
|
| 2217 |
|
|
|
| 2218 |
|
|
if(info && info->magic == PCXX_MAGIC) {
|
| 2219 |
|
|
struct tty_struct *tty = info->tty;
|
| 2220 |
|
|
if (tty && tty->driver_data) {
|
| 2221 |
|
|
if(clear_bit(PCXE_EVENT_HANGUP, &info->event)) {
|
| 2222 |
|
|
tty_hangup(tty);
|
| 2223 |
|
|
wake_up_interruptible(&info->open_wait);
|
| 2224 |
|
|
info->asyncflags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
|
| 2225 |
|
|
}
|
| 2226 |
|
|
}
|
| 2227 |
|
|
}
|
| 2228 |
|
|
}
|
| 2229 |
|
|
|
| 2230 |
|
|
|
| 2231 |
|
|
static void pcxe_stop(struct tty_struct *tty)
|
| 2232 |
|
|
{
|
| 2233 |
|
|
struct channel *info;
|
| 2234 |
|
|
|
| 2235 |
|
|
if ((info=chan(tty))!=NULL) {
|
| 2236 |
|
|
unsigned long flags;
|
| 2237 |
|
|
save_flags(flags);
|
| 2238 |
|
|
cli();
|
| 2239 |
|
|
if ((info->statusflags & TXSTOPPED) == 0) {
|
| 2240 |
|
|
globalwinon(info);
|
| 2241 |
|
|
fepcmd(info, PAUSETX, 0, 0, 0, 0);
|
| 2242 |
|
|
info->statusflags |= TXSTOPPED;
|
| 2243 |
|
|
memoff(info);
|
| 2244 |
|
|
}
|
| 2245 |
|
|
restore_flags(flags);
|
| 2246 |
|
|
}
|
| 2247 |
|
|
}
|
| 2248 |
|
|
|
| 2249 |
|
|
static void pcxe_throttle(struct tty_struct * tty)
|
| 2250 |
|
|
{
|
| 2251 |
|
|
struct channel *info;
|
| 2252 |
|
|
|
| 2253 |
|
|
if ((info=chan(tty))!=NULL) {
|
| 2254 |
|
|
unsigned long flags;
|
| 2255 |
|
|
save_flags(flags);
|
| 2256 |
|
|
cli();
|
| 2257 |
|
|
if ((info->statusflags & RXSTOPPED) == 0) {
|
| 2258 |
|
|
globalwinon(info);
|
| 2259 |
|
|
fepcmd(info, PAUSERX, 0, 0, 0, 0);
|
| 2260 |
|
|
info->statusflags |= RXSTOPPED;
|
| 2261 |
|
|
memoff(info);
|
| 2262 |
|
|
}
|
| 2263 |
|
|
restore_flags(flags);
|
| 2264 |
|
|
}
|
| 2265 |
|
|
}
|
| 2266 |
|
|
|
| 2267 |
|
|
static void pcxe_unthrottle(struct tty_struct *tty)
|
| 2268 |
|
|
{
|
| 2269 |
|
|
struct channel *info;
|
| 2270 |
|
|
|
| 2271 |
|
|
if ((info=chan(tty)) != NULL) {
|
| 2272 |
|
|
unsigned long flags;
|
| 2273 |
|
|
|
| 2274 |
|
|
/* Just in case output was resumed because of a change in Digi-flow */
|
| 2275 |
|
|
save_flags(flags);
|
| 2276 |
|
|
cli();
|
| 2277 |
|
|
if(info->statusflags & RXSTOPPED) {
|
| 2278 |
|
|
volatile struct board_chan *bc;
|
| 2279 |
|
|
globalwinon(info);
|
| 2280 |
|
|
bc = info->brdchan;
|
| 2281 |
|
|
fepcmd(info, RESUMERX, 0, 0, 0, 0);
|
| 2282 |
|
|
info->statusflags &= ~RXSTOPPED;
|
| 2283 |
|
|
memoff(info);
|
| 2284 |
|
|
}
|
| 2285 |
|
|
restore_flags(flags);
|
| 2286 |
|
|
}
|
| 2287 |
|
|
}
|
| 2288 |
|
|
|
| 2289 |
|
|
|
| 2290 |
|
|
static void pcxe_start(struct tty_struct *tty)
|
| 2291 |
|
|
{
|
| 2292 |
|
|
struct channel *info;
|
| 2293 |
|
|
|
| 2294 |
|
|
if ((info=chan(tty))!=NULL) {
|
| 2295 |
|
|
unsigned long flags;
|
| 2296 |
|
|
|
| 2297 |
|
|
save_flags(flags);
|
| 2298 |
|
|
cli();
|
| 2299 |
|
|
/* Just in case output was resumed because of a change in Digi-flow */
|
| 2300 |
|
|
if(info->statusflags & TXSTOPPED) {
|
| 2301 |
|
|
volatile struct board_chan *bc;
|
| 2302 |
|
|
globalwinon(info);
|
| 2303 |
|
|
bc = info->brdchan;
|
| 2304 |
|
|
if(info->statusflags & LOWWAIT)
|
| 2305 |
|
|
bc->ilow = 1;
|
| 2306 |
|
|
fepcmd(info, RESUMETX, 0, 0, 0, 0);
|
| 2307 |
|
|
info->statusflags &= ~TXSTOPPED;
|
| 2308 |
|
|
memoff(info);
|
| 2309 |
|
|
}
|
| 2310 |
|
|
restore_flags(flags);
|
| 2311 |
|
|
}
|
| 2312 |
|
|
}
|
| 2313 |
|
|
|
| 2314 |
|
|
|
| 2315 |
|
|
void digi_send_break(struct channel *ch, int msec)
|
| 2316 |
|
|
{
|
| 2317 |
|
|
unsigned long flags;
|
| 2318 |
|
|
|
| 2319 |
|
|
save_flags(flags);
|
| 2320 |
|
|
cli();
|
| 2321 |
|
|
globalwinon(ch);
|
| 2322 |
|
|
|
| 2323 |
|
|
/*
|
| 2324 |
|
|
* Maybe I should send an infinite break here, schedule() for
|
| 2325 |
|
|
* msec amount of time, and then stop the break. This way,
|
| 2326 |
|
|
* the user can't screw up the FEP by causing digi_send_break()
|
| 2327 |
|
|
* to be called (i.e. via an ioctl()) more than once in msec amount
|
| 2328 |
|
|
* of time. Try this for now...
|
| 2329 |
|
|
*/
|
| 2330 |
|
|
|
| 2331 |
|
|
fepcmd(ch, SENDBREAK, msec, 0, 10, 0);
|
| 2332 |
|
|
memoff(ch);
|
| 2333 |
|
|
|
| 2334 |
|
|
restore_flags(flags);
|
| 2335 |
|
|
}
|
| 2336 |
|
|
|
| 2337 |
|
|
static void setup_empty_event(struct tty_struct *tty, struct channel *ch)
|
| 2338 |
|
|
{
|
| 2339 |
|
|
volatile struct board_chan *bc;
|
| 2340 |
|
|
unsigned long flags;
|
| 2341 |
|
|
|
| 2342 |
|
|
save_flags(flags);
|
| 2343 |
|
|
cli();
|
| 2344 |
|
|
globalwinon(ch);
|
| 2345 |
|
|
ch->statusflags |= EMPTYWAIT;
|
| 2346 |
|
|
bc = ch->brdchan;
|
| 2347 |
|
|
bc->iempty = 1;
|
| 2348 |
|
|
memoff(ch);
|
| 2349 |
|
|
restore_flags(flags);
|
| 2350 |
|
|
}
|
