This patch removes drivers/char/pcxx.c It depends on the previous patches.
Signed-off-by: James Nelson <[EMAIL PROTECTED]> diff -urN --exclude='*~' linux-2.6.11-rc2-mm1-original/drivers/char/pcxx.c linux-2.6.11-rc2-mm1/drivers/char/pcxx.c --- linux-2.6.11-rc2-mm1-original/drivers/char/pcxx.c 2005-01-24 17:15:56.000000000 -0500 +++ linux-2.6.11-rc2-mm1/drivers/char/pcxx.c 1969-12-31 19:00:00.000000000 -0500 @@ -1,2353 +0,0 @@ -/* - * linux/drivers/char/pcxx.c - * - * Written by Troy De Jongh, November, 1994 - * - * Copyright (C) 1994,1995 Troy De Jongh - * This software may be used and distributed according to the terms - * of the GNU General Public License. - * - * This driver is for the DigiBoard PC/Xe and PC/Xi line of products. - * - * This driver does NOT support DigiBoard's fastcook FEP option and - * does not support the transparent print (i.e. digiprint) option. - * - * This Driver is currently maintained by Christoph Lameter ([EMAIL PROTECTED]) - * - * Please contact digi for support issues at [EMAIL PROTECTED] - * Some more information can be found at - * http://lameter.com/digi. - * - * 1.5.2 Fall 1995 Bug fixes by David Nugent - * 1.5.3 March 9, 1996 Christoph Lameter: Fixed 115.2K Support. Memory - * allocation harmonized with 1.3.X Series. - * 1.5.4 March 30, 1996 Christoph Lameter: Fixup for 1.3.81. Use init_bh - * instead of direct assignment to kernel arrays. - * 1.5.5 April 5, 1996 Major device numbers corrected. - * Mike McLagan<[EMAIL PROTECTED]>: Add setup - * variable handling, instead of using the old pcxxconfig.h - * 1.5.6 April 16, 1996 Christoph Lameter: Pointer cleanup, macro cleanup. - * Call out devices changed to /dev/cudxx. - * 1.5.7 July 22, 1996 Martin Mares: CLOCAL fix, pcxe_table clearing. - * David Nugent: Bug in pcxe_open. - * Brian J. Murrell: Modem Control fixes, Majors correctly assigned - * 1.6.1 April 6, 1997 Bernhard Kaindl: fixed virtual memory access for 2.1 - * i386-kernels and use on other archtitectures, Allowing use - * as module, added module parameters, added switch to enable - * verbose messages to assist user during card configuration. - * Currently only tested on a PC/Xi card, but should work on Xe - * and Xeve also. - * 1.6.2 August, 7, 2000: Arnaldo Carvalho de Melo <[EMAIL PROTECTED]> - * get rid of panics, release previously allocated resources - * 1.6.3 August, 23, 2000: Arnaldo Carvalho de Melo <[EMAIL PROTECTED]> - * cleaned up wrt verify_area. - * Christoph Lameter: Update documentation, email addresses - * and URLs. Remove some obsolete code. - * - */ - -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/ioport.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/interrupt.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/major.h> -#include <linux/string.h> -#include <linux/fcntl.h> -#include <linux/ptrace.h> -#include <linux/delay.h> -#include <linux/serial.h> -#include <linux/tty_driver.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/bitops.h> - -#ifndef MODULE -#include <linux/ctype.h> /* We only need it for parsing the "digi="-line */ -#endif - -#include <asm/system.h> -#include <asm/io.h> -#include <asm/uaccess.h> -#include <asm/semaphore.h> - -#define VERSION "1.6.3" - -#include "digi.h" -#include "fep.h" -#include "pcxx.h" -#include "digi_fep.h" -#include "digi_bios.h" - -/* - * Define one default setting if no digi= config line is used. - * Default is altpin = disabled, 16 ports, I/O 200h, Memory 0D0000h - */ -static struct board_info boards[MAX_DIGI_BOARDS] = { { -/* Board is enabled */ ENABLED, -/* Type is auto-detected */ 0, -/* altping is disabled */ DISABLED, -/* number of ports = 16 */ 16, -/* io address is 0x200 */ 0x200, -/* card memory at 0xd0000 */ 0xd0000, -/* first minor device no. */ 0 -} }; - -static int verbose = 0; -static int debug = 0; - -#ifdef MODULE -/* Variables for insmod */ -static int io[] = {0, 0, 0, 0}; -static int membase[] = {0, 0, 0, 0}; -static int memsize[] = {0, 0, 0, 0}; -static int altpin[] = {0, 0, 0, 0}; -static int numports[] = {0, 0, 0, 0}; - -MODULE_AUTHOR("Bernhard Kaindl"); -MODULE_DESCRIPTION("Digiboard PC/X{i,e,eve} driver"); -MODULE_LICENSE("GPL"); -module_param(verbose, bool, 0644); -module_param(debug, bool, 0644); -module_param_array(io, int, NULL, 0); -module_param_array(membase, int, NULL, 0); -module_param_array(memsize, int, NULL, 0); -module_param_array(altpin, int, NULL, 0); -module_param_array(numports, int, NULL, 0); - -#endif /* MODULE */ - -static int numcards = 1; -static int nbdevs = 0; - -static struct channel *digi_channels; - -int pcxx_ncook=sizeof(pcxx_cook); -int pcxx_nbios=sizeof(pcxx_bios); - -#define pcxxassert(x, msg) if(!(x)) pcxx_error(__LINE__, msg) - -#define FEPTIMEOUT 200000 -#define SERIAL_TYPE_NORMAL 1 -#define PCXE_EVENT_HANGUP 1 - -static struct tty_driver *pcxe_driver; - -static struct timer_list pcxx_timer; - -static void pcxxpoll(unsigned long dummy); -static void fepcmd(struct channel *, int, int, int, int, int); -static void pcxe_put_char(struct tty_struct *, unsigned char); -static void pcxe_flush_chars(struct tty_struct *); -static void pcxx_error(int, char *); -static void pcxe_close(struct tty_struct *, struct file *); -static int pcxe_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long); -static void pcxe_set_termios(struct tty_struct *, struct termios *); -static int pcxe_write(struct tty_struct *, const unsigned char *, int); -static int pcxe_write_room(struct tty_struct *); -static int pcxe_chars_in_buffer(struct tty_struct *); -static void pcxe_flush_buffer(struct tty_struct *); -static void doevent(int); -static void receive_data(struct channel *); -static void pcxxparam(struct tty_struct *, struct channel *ch); -static void do_softint(void *); -static inline void pcxe_sched_event(struct channel *, int); -static void pcxe_start(struct tty_struct *); -static void pcxe_stop(struct tty_struct *); -static void pcxe_throttle(struct tty_struct *); -static void pcxe_unthrottle(struct tty_struct *); -static void digi_send_break(struct channel *ch, int msec); -static void shutdown(struct channel *); -static void setup_empty_event(struct tty_struct *tty, struct channel *ch); -static inline void memwinon(struct board_info *b, unsigned int win); -static inline void memwinoff(struct board_info *b, unsigned int win); -static inline void globalwinon(struct channel *ch); -static inline void rxwinon(struct channel *ch); -static inline void txwinon(struct channel *ch); -static inline void memoff(struct channel *ch); -static inline void assertgwinon(struct channel *ch); -static inline void assertmemoff(struct channel *ch); -static int pcxe_tiocmget(struct tty_struct *tty, struct file *file); -static int pcxe_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear); - -#define TZ_BUFSZ 4096 - -/* function definitions */ - -/*****************************************************************************/ - -static void cleanup_board_resources(void) -{ - int crd, i; - struct board_info *bd; - struct channel *ch; - - for(crd = 0; crd < numcards; crd++) { - bd = &boards[crd]; - ch = digi_channels + bd->first_minor; - - if (bd->region) - release_region(bd->port, 4); - - for(i = 0; i < bd->numports; i++, ch++) - if (ch->tmp_buf) - kfree(ch->tmp_buf); - } -} - -static void __exit pcxe_cleanup(void) -{ - - unsigned long flags; - int e1; - - printk(KERN_NOTICE "Unloading PC/Xx version %s\n", VERSION); - - save_flags(flags); - cli(); - del_timer_sync(&pcxx_timer); - - if ((e1 = tty_unregister_driver(pcxe_driver))) - printk("SERIAL: failed to unregister serial driver (%d)\n", e1); - - put_tty_driver(pcxe_driver); - cleanup_board_resources(); - kfree(digi_channels); - restore_flags(flags); -} - -static inline struct channel *chan(register struct tty_struct *tty) -{ - if (tty) { - register struct channel *ch=(struct channel *)tty->driver_data; - if (ch >= digi_channels && ch < digi_channels+nbdevs) { - if (ch->magic==PCXX_MAGIC) - return ch; - } - } - return NULL; -} - -/* These inline routines are to turn board memory on and off */ -static inline void memwinon(struct board_info *b, unsigned int win) -{ - if(b->type == PCXEVE) - outb_p(FEPWIN|win, b->port+1); - else - outb_p(inb(b->port)|FEPMEM, b->port); -} - -static inline void memwinoff(struct board_info *b, unsigned int win) -{ - outb_p(inb(b->port)&~FEPMEM, b->port); - if(b->type == PCXEVE) - outb_p(0, b->port + 1); -} - -static inline void globalwinon(struct channel *ch) -{ - if(ch->board->type == PCXEVE) - outb_p(FEPWIN, ch->board->port+1); - else - outb_p(FEPMEM, ch->board->port); -} - -static inline void rxwinon(struct channel *ch) -{ - if(ch->rxwin == 0) - outb_p(FEPMEM, ch->board->port); - else - outb_p(ch->rxwin, ch->board->port+1); -} - -static inline void txwinon(struct channel *ch) -{ - if(ch->txwin == 0) - outb_p(FEPMEM, ch->board->port); - else - outb_p(ch->txwin, ch->board->port+1); -} - -static inline void memoff(struct channel *ch) -{ - outb_p(0, ch->board->port); - if(ch->board->type == PCXEVE) - outb_p(0, ch->board->port+1); -} - -static inline void assertgwinon(struct channel *ch) -{ - if(ch->board->type != PCXEVE) - pcxxassert(inb(ch->board->port) & FEPMEM, "Global memory off"); -} - -static inline void assertmemoff(struct channel *ch) -{ - if(ch->board->type != PCXEVE) - pcxxassert(!(inb(ch->board->port) & FEPMEM), "Memory on"); -} - -static inline void pcxe_sched_event(struct channel *info, int event) -{ - info->event |= 1 << event; - schedule_work(&info->tqueue); -} - -static void pcxx_error(int line, char *msg) -{ - printk("pcxx_error (DigiBoard): line=%d %s\n", line, msg); -} - -static int pcxx_waitcarrier(struct tty_struct *tty,struct file *filp,struct channel *info) -{ - DECLARE_WAITQUEUE(wait, current); - int retval = 0; - int do_clocal = 0; - - if (tty->termios->c_cflag & CLOCAL) - do_clocal = 1; - - /* - * Block waiting for the carrier detect and the line to become free - */ - - retval = 0; - add_wait_queue(&info->open_wait, &wait); - info->count--; - info->blocked_open++; - - for (;;) { - cli(); - globalwinon(info); - info->omodem |= DTR|RTS; - fepcmd(info, SETMODEM, DTR|RTS, 0, 10, 1); - memoff(info); - sti(); - set_current_state(TASK_INTERRUPTIBLE); - if(tty_hung_up_p(filp) || (info->asyncflags & ASYNC_INITIALIZED) == 0) { - if(info->asyncflags & ASYNC_HUP_NOTIFY) - retval = -EAGAIN; - else - retval = -ERESTARTSYS; - break; - } - if ((info->asyncflags & ASYNC_CLOSING) == 0 && - (do_clocal || (info->imodem & info->dcd))) - break; - if(signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } - schedule(); - } - current->state = TASK_RUNNING; - remove_wait_queue(&info->open_wait, &wait); - - if(!tty_hung_up_p(filp)) - info->count++; - info->blocked_open--; - - return retval; -} - - -int pcxe_open(struct tty_struct *tty, struct file * filp) -{ - volatile struct board_chan *bc; - struct channel *ch; - unsigned long flags; - int line; - int boardnum; - int retval; - - line = tty->index; - - if(line < 0 || line >= nbdevs) { - printk("line out of range in pcxe_open\n"); - tty->driver_data = NULL; - return(-ENODEV); - } - - for(boardnum=0;boardnum<numcards;boardnum++) - if ((line >= boards[boardnum].first_minor) && - (line < boards[boardnum].first_minor + boards[boardnum].numports)) - break; - - if(boardnum >= numcards || boards[boardnum].status == DISABLED || - (line - boards[boardnum].first_minor) >= boards[boardnum].numports) { - tty->driver_data = NULL; /* Mark this device as 'down' */ - return(-ENODEV); - } - - ch = digi_channels+line; - - if(ch->brdchan == 0) { - tty->driver_data = NULL; - return(-ENODEV); - } - - /* - * If the device is in the middle of being closed, then block - * until it's done, and then try again. - */ - if(ch->asyncflags & ASYNC_CLOSING) { - interruptible_sleep_on(&ch->close_wait); - if(ch->asyncflags & ASYNC_HUP_NOTIFY) - return -EAGAIN; - else - return -ERESTARTSYS; - } - - save_flags(flags); - cli(); - ch->count++; - tty->driver_data = ch; - ch->tty = tty; - - if ((ch->asyncflags & ASYNC_INITIALIZED) == 0) { - unsigned int head; - - globalwinon(ch); - ch->statusflags = 0; - bc=ch->brdchan; - ch->imodem = bc->mstat; - head = bc->rin; - bc->rout = head; - ch->tty = tty; - pcxxparam(tty,ch); - ch->imodem = bc->mstat; - bc->idata = 1; - ch->omodem = DTR|RTS; - fepcmd(ch, SETMODEM, DTR|RTS, 0, 10, 1); - memoff(ch); - ch->asyncflags |= ASYNC_INITIALIZED; - } - restore_flags(flags); - - if(ch->asyncflags & ASYNC_CLOSING) { - interruptible_sleep_on(&ch->close_wait); - if(ch->asyncflags & ASYNC_HUP_NOTIFY) - return -EAGAIN; - else - return -ERESTARTSYS; - } - - if (!(filp->f_flags & O_NONBLOCK)) { - /* this has to be set in order for the "block until - * CD" code to work correctly. i'm not sure under - * what circumstances asyncflags should be set to - * ASYNC_NORMAL_ACTIVE though - * [EMAIL PROTECTED] - */ - ch->asyncflags |= ASYNC_NORMAL_ACTIVE; - if ((retval = pcxx_waitcarrier(tty, filp, ch)) != 0) - return retval; - } - ch->asyncflags |= ASYNC_NORMAL_ACTIVE; - - return 0; -} - -static void shutdown(struct channel *info) -{ - unsigned long flags; - volatile struct board_chan *bc; - struct tty_struct *tty; - - if (!(info->asyncflags & ASYNC_INITIALIZED)) - return; - - save_flags(flags); - cli(); - globalwinon(info); - - bc = info->brdchan; - if(bc) - bc->idata = 0; - - tty = info->tty; - - /* - * If we're a modem control device and HUPCL is on, drop RTS & DTR. - */ - if(tty->termios->c_cflag & HUPCL) { - info->omodem &= ~(RTS|DTR); - fepcmd(info, SETMODEM, 0, DTR|RTS, 10, 1); - } - - memoff(info); - info->asyncflags &= ~ASYNC_INITIALIZED; - restore_flags(flags); -} - - -static void pcxe_close(struct tty_struct * tty, struct file * filp) -{ - struct channel *info; - - if ((info=chan(tty))!=NULL) { - unsigned long flags; - save_flags(flags); - cli(); - - if(tty_hung_up_p(filp)) { - /* flag that somebody is done with this module */ - restore_flags(flags); - return; - } - /* this check is in serial.c, it won't hurt to do it here too */ - if ((tty->count == 1) && (info->count != 1)) { - /* - * Uh, oh. tty->count is 1, which means that the tty - * structure will be freed. Info->count should always - * be one in these conditions. If it's greater than - * one, we've got real problems, since it means the - * serial port won't be shutdown. - */ - printk("pcxe_close: bad serial port count; tty->count is 1, info->count is %d\n", info->count); - info->count = 1; - } - if (info->count-- > 1) { - restore_flags(flags); - return; - } - if (info->count < 0) { - info->count = 0; - } - - info->asyncflags |= ASYNC_CLOSING; - - tty->closing = 1; - if(info->asyncflags & ASYNC_INITIALIZED) { - setup_empty_event(tty,info); - tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ - } - - if(tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); - tty_ldisc_flush(tty); - shutdown(info); - tty->closing = 0; - info->event = 0; - info->tty = NULL; - if(info->blocked_open) { - if(info->close_delay) { - msleep_interruptible(jiffies_to_msecs(info->close_delay)); - } - wake_up_interruptible(&info->open_wait); - } - info->asyncflags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); - wake_up_interruptible(&info->close_wait); - restore_flags(flags); - } -} - - -void pcxe_hangup(struct tty_struct *tty) -{ - struct channel *ch; - - if ((ch=chan(tty))!=NULL) { - unsigned long flags; - - save_flags(flags); - cli(); - shutdown(ch); - ch->event = 0; - ch->count = 0; - ch->tty = NULL; - ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE; - wake_up_interruptible(&ch->open_wait); - restore_flags(flags); - } -} - - - -static int pcxe_write(struct tty_struct * tty, const unsigned char *buf, int count) -{ - struct channel *ch; - volatile struct board_chan *bc; - int total, remain, size, stlen; - unsigned int head, tail; - unsigned long flags; - /* printk("Entering pcxe_write()\n"); */ - - if ((ch=chan(tty))==NULL) - return 0; - - bc = ch->brdchan; - size = ch->txbufsize; - - /* - * All data is now local - */ - - total = 0; - save_flags(flags); - cli(); - globalwinon(ch); - head = bc->tin & (size - 1); - tail = bc->tout; - if (tail != bc->tout) - tail = bc->tout; - tail &= (size - 1); - if (head >= tail) { - remain = size - (head - tail) - 1; - stlen = size - head; - } - else { - remain = tail - head - 1; - stlen = remain; - } - count = min(remain, count); - - txwinon(ch); - while (count > 0) { - stlen = min(count, stlen); - memcpy(ch->txptr + head, buf, stlen); - buf += stlen; - count -= stlen; - total += stlen; - head += stlen; - if (head >= size) { - head = 0; - stlen = tail; - } - } - ch->statusflags |= TXBUSY; - globalwinon(ch); - bc->tin = head; - if ((ch->statusflags & LOWWAIT) == 0) { - ch->statusflags |= LOWWAIT; - bc->ilow = 1; - } - memoff(ch); - restore_flags(flags); - - return(total); -} - - -static void pcxe_put_char(struct tty_struct *tty, unsigned char c) -{ - pcxe_write(tty, &c, 1); - return; -} - - -static int pcxe_write_room(struct tty_struct *tty) -{ - struct channel *ch; - int remain; - - remain = 0; - if ((ch=chan(tty))!=NULL) { - volatile struct board_chan *bc; - unsigned int head, tail; - unsigned long flags; - - save_flags(flags); - cli(); - globalwinon(ch); - - bc = ch->brdchan; - head = bc->tin & (ch->txbufsize - 1); - tail = bc->tout; - if (tail != bc->tout) - tail = bc->tout; - tail &= (ch->txbufsize - 1); - - if((remain = tail - head - 1) < 0 ) - remain += ch->txbufsize; - - if (remain && (ch->statusflags & LOWWAIT) == 0) { - ch->statusflags |= LOWWAIT; - bc->ilow = 1; - } - memoff(ch); - restore_flags(flags); - } - - return remain; -} - - -static int pcxe_chars_in_buffer(struct tty_struct *tty) -{ - int chars; - unsigned int ctail, head, tail; - int remain; - unsigned long flags; - struct channel *ch; - volatile struct board_chan *bc; - - if ((ch=chan(tty))==NULL) - return(0); - - save_flags(flags); - cli(); - globalwinon(ch); - - bc = ch->brdchan; - tail = bc->tout; - head = bc->tin; - ctail = ch->mailbox->cout; - if(tail == head && ch->mailbox->cin == ctail && bc->tbusy == 0) - chars = 0; - else { - head = bc->tin & (ch->txbufsize - 1); - tail &= (ch->txbufsize - 1); - if((remain = tail - head - 1) < 0 ) - remain += ch->txbufsize; - - chars = (int)(ch->txbufsize - remain); - - /* - * Make it possible to wakeup anything waiting for output - * in tty_ioctl.c, etc. - */ - if(!(ch->statusflags & EMPTYWAIT)) - setup_empty_event(tty,ch); - } - - memoff(ch); - restore_flags(flags); - - return(chars); -} - - -static void pcxe_flush_buffer(struct tty_struct *tty) -{ - unsigned int tail; - volatile struct board_chan *bc; - struct channel *ch; - unsigned long flags; - - if ((ch=chan(tty))==NULL) - return; - - save_flags(flags); - cli(); - - globalwinon(ch); - bc = ch->brdchan; - tail = bc->tout; - fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0); - - memoff(ch); - restore_flags(flags); - - tty_wakeup(tty); -} - -static void pcxe_flush_chars(struct tty_struct *tty) -{ - struct channel * ch; - - if ((ch=chan(tty))!=NULL) { - unsigned long flags; - - save_flags(flags); - cli(); - if ((ch->statusflags & TXBUSY) && !(ch->statusflags & EMPTYWAIT)) - setup_empty_event(tty,ch); - restore_flags(flags); - } -} - -#ifndef MODULE - -/* - * Driver setup function when linked into the kernel to optionally parse multible - * "digi="-lines and initialize the driver at boot time. No probing. - */ -void __init pcxx_setup(char *str, int *ints) -{ - - struct board_info board; - int i, j, last; - char *temp, *t2; - unsigned len; - - numcards=0; - - memset(&board, 0, sizeof(board)); - - for(last=0,i=1;i<=ints[0];i++) - switch(i) - { - case 1: - board.status = ints[i]; - last = i; - break; - - case 2: - board.type = ints[i]; - last = i; - break; - - case 3: - board.altpin = ints[i]; - last = i; - break; - - case 4: - board.numports = ints[i]; - last = i; - break; - - case 5: - board.port = ints[i]; - last = i; - break; - - case 6: - board.membase = ints[i]; - last = i; - break; - - default: - printk("PC/Xx: Too many integer parms\n"); - return; - } - - while (str && *str) - { - /* find the next comma or terminator */ - temp = str; - while (*temp && (*temp != ',')) - temp++; - - if (!*temp) - temp = NULL; - else - *temp++ = 0; - - i = last + 1; - - switch(i) - { - case 1: - len = strlen(str); - if (strncmp("Disable", str, len) == 0) - board.status = 0; - else - if (strncmp("Enable", str, len) == 0) - board.status = 1; - else - { - printk("PC/Xx: Invalid status %s\n", str); - return; - } - last = i; - break; - - case 2: - for(j=0;j<PCXX_NUM_TYPES;j++) - if (strcmp(board_desc[j], str) == 0) - break; - - if (i<PCXX_NUM_TYPES) - board.type = j; - else - { - printk("PC/Xx: Invalid board name: %s\n", str); - return; - } - last = i; - break; - - case 3: - len = strlen(str); - if (strncmp("Disable", str, len) == 0) - board.altpin = 0; - else - if (strncmp("Enable", str, len) == 0) - board.altpin = 1; - else - { - printk("PC/Xx: Invalid altpin %s\n", str); - return; - } - last = i; - break; - - case 4: - t2 = str; - while (isdigit(*t2)) - t2++; - - if (*t2) - { - printk("PC/Xx: Invalid port count %s\n", str); - return; - } - - board.numports = simple_strtoul(str, NULL, 0); - last = i; - break; - - case 5: - t2 = str; - while (isxdigit(*t2)) - t2++; - - if (*t2) - { - printk("PC/Xx: Invalid io port address %s\n", str); - return; - } - - board.port = simple_strtoul(str, NULL, 16); - last = i; - break; - - case 6: - t2 = str; - while (isxdigit(*t2)) - t2++; - - if (*t2) - { - printk("PC/Xx: Invalid memory base %s\n", str); - return; - } - - board.membase = simple_strtoul(str, NULL, 16); - last = i; - break; - - default: - printk("PC/Xx: Too many string parms\n"); - return; - } - str = temp; - } - - if (last < 6) - { - printk("PC/Xx: Insufficient parms specified\n"); - return; - } - - /* I should REALLY validate the stuff here */ - - memcpy(&boards[numcards],&board, sizeof(board)); - printk("PC/Xx: Added board %i, %s %s %i ports at 0x%4.4X base 0x%6.6X\n", - numcards, board_desc[board.type], board_mem[board.type], - board.numports, board.port, (unsigned int) board.membase); - - /* keep track of my initial minor number */ - if (numcards) - boards[numcards].first_minor = boards[numcards-1].first_minor + boards[numcards-1].numports; - else - boards[numcards].first_minor = 0; - - /* yeha! string parameter was successful! */ - numcards++; -} -#endif - -static struct tty_operations pcxe_ops = { - .open = pcxe_open, - .close = pcxe_close, - .write = pcxe_write, - .put_char = pcxe_put_char, - .flush_chars = pcxe_flush_chars, - .write_room = pcxe_write_room, - .chars_in_buffer = pcxe_chars_in_buffer, - .flush_buffer = pcxe_flush_buffer, - .ioctl = pcxe_ioctl, - .throttle = pcxe_throttle, - .unthrottle = pcxe_unthrottle, - .set_termios = pcxe_set_termios, - .stop = pcxe_stop, - .start = pcxe_start, - .hangup = pcxe_hangup, - .tiocmget = pcxe_tiocmget, - .tiocmset = pcxe_tiocmset, -}; - -/* - * function to initialize the driver with the given parameters, which are either - * the default values from this file or the parameters given at boot. - */ -static int __init pcxe_init(void) -{ - ulong memory_seg=0, memory_size=0; - int lowwater, enabled_cards=0, i, crd, shrinkmem=0, topwin = 0xff00L, botwin=0x100L; - int ret = -ENOMEM; - unchar *fepos, *memaddr, *bios, v; - volatile struct global_data *gd; - volatile struct board_chan *bc; - struct board_info *bd; - struct channel *ch; - - printk(KERN_NOTICE "Digiboard PC/X{i,e,eve} driver v%s\n", VERSION); - -#ifdef MODULE - for (i = 0; i < MAX_DIGI_BOARDS; i++) { - if (io[i]) { - numcards = 0; - break; - } - } - if (numcards == 0) { - int first_minor = 0; - - for (i = 0; i < MAX_DIGI_BOARDS; i++) { - if (io[i] == 0) { - boards[i].port = 0; - boards[i].status = DISABLED; - } - else { - boards[i].port = (ushort)io[i]; - boards[i].status = ENABLED; - boards[i].first_minor = first_minor; - numcards=i+1; - } - if (membase[i]) - boards[i].membase = (ulong)membase[i]; - else - boards[i].membase = 0xD0000; - - if (memsize[i]) - boards[i].memsize = (ulong)(memsize[i] * 1024); - else - boards[i].memsize = 0; - - if (altpin[i]) - boards[i].altpin = ON; - else - boards[i].altpin = OFF; - - if (numports[i]) - boards[i].numports = (ushort)numports[i]; - else - boards[i].numports = 16; - - boards[i].region = NULL; - first_minor += boards[i].numports; - } - } -#endif - - if (numcards <= 0) - { - printk("PC/Xx: No cards configured, driver not active.\n"); - return -EIO; - } -#if 1 - if (debug) - for (i = 0; i < numcards; i++) { - printk("Card %d:status=%d, port=0x%x, membase=0x%lx, memsize=0x%lx, altpin=%d, numports=%d, first_minor=%d\n", - i+1, - boards[i].status, - boards[i].port, - boards[i].membase, - boards[i].memsize, - boards[i].altpin, - boards[i].numports, - boards[i].first_minor); - } -#endif - - for (i=0;i<numcards;i++) - nbdevs += boards[i].numports; - - if (nbdevs <= 0) - { - printk("PC/Xx: No devices activated, driver not active.\n"); - return -EIO; - } - - pcxe_driver = alloc_tty_driver(nbdevs); - if (!pcxe_driver) - return -ENOMEM; - - /* - * this turns out to be more memory efficient, as there are no - * unused spaces. - */ - digi_channels = kmalloc(sizeof(struct channel) * nbdevs, GFP_KERNEL); - if (!digi_channels) { - printk(KERN_ERR "Unable to allocate digi_channel struct\n"); - put_tty_driver(pcxe_driver); - return -ENOMEM; - } - memset(digi_channels, 0, sizeof(struct channel) * nbdevs); - - init_timer(&pcxx_timer); - pcxx_timer.function = pcxxpoll; - - pcxe_driver->owner = THIS_MODULE; - pcxe_driver->name = "ttyD"; - pcxe_driver->devfs_name = "pcxe/"; - pcxe_driver->major = DIGI_MAJOR; - pcxe_driver->minor_start = 0; - pcxe_driver->type = TTY_DRIVER_TYPE_SERIAL; - pcxe_driver->subtype = SERIAL_TYPE_NORMAL; - pcxe_driver->init_termios = tty_std_termios; - pcxe_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL; - pcxe_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(pcxe_driver, &pcxe_ops); - - for(crd=0; crd < numcards; crd++) { - bd = &boards[crd]; - outb(FEPRST, bd->port); - mdelay(1); - - for(i=0; (inb(bd->port) & FEPMASK) != FEPRST; i++) { - if(i > 100) { - printk("PC/Xx: Board not found at port 0x%x! Check switch settings.\n", - bd->port); - bd->status = DISABLED; - break; - } -#ifdef MODULE - schedule(); -#endif - mdelay(10); - } - if(bd->status == DISABLED) - continue; - - v = inb(bd->port); - - if((v & 0x1) == 0x1) { - if((v & 0x30) == 0) { /* PC/Xi 64K card */ - memory_seg = 0xf000; - memory_size = 0x10000; - } - - if((v & 0x30) == 0x10) { /* PC/Xi 128K card */ - memory_seg = 0xe000; - memory_size = 0x20000; - } - - if((v & 0x30) == 0x20) { /* PC/Xi 256K card */ - memory_seg = 0xc000; - memory_size = 0x40000; - } - - if((v & 0x30) == 0x30) { /* PC/Xi 512K card */ - memory_seg = 0x8000; - memory_size = 0x80000; - } - bd->type = PCXI; - } else { - if((v & 0x1) == 0x1) { - bd->status = DISABLED; /* PC/Xm unsupported card */ - printk("PC/Xx: PC/Xm at 0x%x not supported!!\n", bd->port); - continue; - } else { - if(v & 0xC0) { - topwin = 0x1f00L; - outb((((ulong)bd->membase>>8) & 0xe0) | 0x10, bd->port+2); - outb(((ulong)bd->membase>>16) & 0xff, bd->port+3); - bd->type = PCXEVE; /* PC/Xe 8K card */ - } else { - bd->type = PCXE; /* PC/Xe 64K card */ - } - - memory_seg = 0xf000; - memory_size = 0x10000; - } - } - if (verbose) - printk("Configuring card %d as a %s %ldK card. io=0x%x, mem=%lx-%lx\n", - crd+1, board_desc[bd->type], memory_size/1024, - bd->port,bd->membase,bd->membase+memory_size-1); - - if (boards[crd].memsize == 0) - boards[crd].memsize = memory_size; - else - if (boards[crd].memsize != memory_size) { - printk("PC/Xx: memory size mismatch:supplied=%lx(%ldK) probed=%ld(%ldK)\n", - boards[crd].memsize, boards[crd].memsize / 1024, - memory_size, memory_size / 1024); - continue; - } - - memaddr = (unchar *)phys_to_virt(bd->membase); - - if (verbose) - printk("Resetting board and testing memory access:"); - - outb(FEPRST|FEPMEM, bd->port); - - for(i=0; (inb(bd->port) & FEPMASK) != (FEPRST|FEPMEM); i++) { - if(i > 1000) { - printk("\nPC/Xx: %s not resetting at port 0x%x! Check switch settings.\n", - board_desc[bd->type], bd->port); - bd->status = DISABLED; - break; - } -#ifdef MODULE - schedule(); -#endif - mdelay(1); - } - if(bd->status == DISABLED) - continue; - - memwinon(bd,0); - *(ulong *)(memaddr + botwin) = 0xa55a3cc3; - *(ulong *)(memaddr + topwin) = 0x5aa5c33c; - - if(*(ulong *)(memaddr + botwin) != 0xa55a3cc3 || - *(ulong *)(memaddr + topwin) != 0x5aa5c33c) { - printk("PC/Xx: Failed memory test at %lx for %s at port %x, check switch settings.\n", - bd->membase, board_desc[bd->type], bd->port); - bd->status = DISABLED; - continue; - } - if (verbose) - printk(" done.\n"); - - for(i=0; i < 16; i++) { - memaddr[MISCGLOBAL+i] = 0; - } - - if(bd->type == PCXI || bd->type == PCXE) { - bios = memaddr + BIOSCODE + ((0xf000 - memory_seg) << 4); - - if (verbose) - printk("Downloading BIOS to 0x%lx:", virt_to_phys(bios)); - - memcpy(bios, pcxx_bios, pcxx_nbios); - - if (verbose) - printk(" done.\n"); - - outb(FEPMEM, bd->port); - - if (verbose) - printk("Waiting for BIOS to become ready"); - - for(i=1; i <= 30; i++) { - if(*(ushort *)((ulong)memaddr + MISCGLOBAL) == *(ushort *)"GD" ) { - goto load_fep; - } - if (verbose) { - printk("."); - if (i % 50 == 0) - printk("\n"); - } -#ifdef MODULE - schedule(); -#endif - mdelay(50); - } - - printk("\nPC/Xx: BIOS download failed for board at 0x%x(addr=%lx-%lx)!\n", - bd->port, bd->membase, bd->membase+bd->memsize); - bd->status = DISABLED; - continue; - } - - if(bd->type == PCXEVE) { - bios = memaddr + (BIOSCODE & 0x1fff); - memwinon(bd,0xff); - - memcpy(bios, pcxx_bios, pcxx_nbios); - - outb(FEPCLR, bd->port); - memwinon(bd,0); - - for(i=0; i <= 1000; i++) { - if(*(ushort *)((ulong)memaddr + MISCGLOBAL) == *(ushort *)"GD" ) { - goto load_fep; - } - if (verbose) { - printk("."); - if (i % 50 == 0) - printk("\n"); - } -#ifdef MODULE - schedule(); -#endif - mdelay(10); - } - - printk("\nPC/Xx: BIOS download failed on the %s at 0x%x!\n", - board_desc[bd->type], bd->port); - bd->status = DISABLED; - continue; - } - -load_fep: - fepos = memaddr + FEPCODE; - if(bd->type == PCXEVE) - fepos = memaddr + (FEPCODE & 0x1fff); - - if (verbose) - printk(" ok.\nDownloading FEP/OS to 0x%lx:", virt_to_phys(fepos)); - - memwinon(bd, (FEPCODE >> 13)); - memcpy(fepos, pcxx_cook, pcxx_ncook); - memwinon(bd, 0); - - if (verbose) - printk(" done.\n"); - - *(ushort *)((ulong)memaddr + MBOX + 0) = 2; - *(ushort *)((ulong)memaddr + MBOX + 2) = memory_seg + FEPCODESEG; - *(ushort *)((ulong)memaddr + MBOX + 4) = 0; - *(ushort *)((ulong)memaddr + MBOX + 6) = FEPCODESEG; - *(ushort *)((ulong)memaddr + MBOX + 8) = 0; - *(ushort *)((ulong)memaddr + MBOX + 10) = pcxx_ncook; - - outb(FEPMEM|FEPINT, bd->port); - outb(FEPMEM, bd->port); - - for(i=0; *(ushort *)((ulong)memaddr + MBOX); i++) { - if(i > 2000) { - printk("PC/Xx: Command failed for the %s at 0x%x!\n", - board_desc[bd->type], bd->port); - bd->status = DISABLED; - break; - } -#ifdef MODULE - schedule(); -#endif - mdelay(1); - } - - if(bd->status == DISABLED) - continue; - - if (verbose) - printk("Waiting for FEP/OS to become ready"); - - *(ushort *)(memaddr + FEPSTAT) = 0; - *(ushort *)(memaddr + MBOX + 0) = 1; - *(ushort *)(memaddr + MBOX + 2) = FEPCODESEG; - *(ushort *)(memaddr + MBOX + 4) = 0x4L; - - outb(FEPINT, bd->port); - outb(FEPCLR, bd->port); - memwinon(bd, 0); - - for(i=1; *(ushort *)((ulong)memaddr + FEPSTAT) != *(ushort *)"OS"; i++) { - if(i > 1000) { - printk("\nPC/Xx: FEP/OS download failed on the %s at 0x%x!\n", - board_desc[bd->type], bd->port); - bd->status = DISABLED; - break; - } - if (verbose) { - printk("."); - if (i % 50 == 0) - printk("\n%5d",i/50); - } -#ifdef MODULE - schedule(); -#endif - mdelay(1); - } - if(bd->status == DISABLED) - continue; - - if (verbose) - printk(" ok.\n"); - - ch = digi_channels+bd->first_minor; - pcxxassert(ch < digi_channels+nbdevs, "ch out of range"); - - bc = (volatile struct board_chan *)((ulong)memaddr + CHANSTRUCT); - gd = (volatile struct global_data *)((ulong)memaddr + GLOBAL); - - if((bd->type == PCXEVE) && (*(ushort *)((ulong)memaddr+NPORT) < 3)) - shrinkmem = 1; - - bd->region = request_region(bd->port, 4, "PC/Xx"); - - if (!bd->region) { - printk(KERN_ERR "I/O port 0x%x is already used\n", bd->port); - ret = -EBUSY; - goto cleanup_boards; - } - - for(i=0; i < bd->numports; i++, ch++, bc++) { - if(((ushort *)((ulong)memaddr + PORTBASE))[i] == 0) { - ch->brdchan = 0; - continue; - } - ch->brdchan = bc; - ch->mailbox = gd; - INIT_WORK(&ch->tqueue, do_softint, ch); - ch->board = &boards[crd]; -#ifdef DEFAULT_HW_FLOW - ch->digiext.digi_flags = RTSPACE|CTSPACE; -#endif - if(boards[crd].altpin) { - ch->dsr = CD; - ch->dcd = DSR; - ch->digiext.digi_flags |= DIGI_ALTPIN; - } else { - ch->dcd = CD; - ch->dsr = DSR; - } - - ch->magic = PCXX_MAGIC; - ch->boardnum = crd; - ch->channelnum = i; - - ch->dev = bd->first_minor + i; - ch->tty = 0; - - if(shrinkmem) { - fepcmd(ch, SETBUFFER, 32, 0, 0, 0); - shrinkmem = 0; - } - - if(bd->type != PCXEVE) { - ch->txptr = memaddr+((bc->tseg-memory_seg) << 4); - ch->rxptr = memaddr+((bc->rseg-memory_seg) << 4); - ch->txwin = ch->rxwin = 0; - } else { - ch->txptr = memaddr+(((bc->tseg-memory_seg) << 4) & 0x1fff); - ch->txwin = FEPWIN | ((bc->tseg-memory_seg) >> 9); - ch->rxptr = memaddr+(((bc->rseg-memory_seg) << 4) & 0x1fff); - ch->rxwin = FEPWIN | ((bc->rseg-memory_seg) >>9 ); - } - - ch->txbufsize = bc->tmax + 1; - ch->rxbufsize = bc->rmax + 1; - ch->tmp_buf = kmalloc(ch->txbufsize,GFP_KERNEL); - init_MUTEX(&ch->tmp_buf_sem); - - if (!ch->tmp_buf) { - printk(KERN_ERR "Unable to allocate memory for temp buffers\n"); - goto cleanup_boards; - } - - lowwater = ch->txbufsize >= 2000 ? 1024 : ch->txbufsize/2; - fepcmd(ch, STXLWATER, lowwater, 0, 10, 0); - fepcmd(ch, SRXLWATER, ch->rxbufsize/4, 0, 10, 0); - fepcmd(ch, SRXHWATER, 3 * ch->rxbufsize/4, 0, 10, 0); - - bc->edelay = 100; - bc->idata = 1; - - ch->startc = bc->startc; - ch->stopc = bc->stopc; - ch->startca = bc->startca; - ch->stopca = bc->stopca; - - ch->fepcflag = 0; - ch->fepiflag = 0; - ch->fepoflag = 0; - ch->fepstartc = 0; - ch->fepstopc = 0; - ch->fepstartca = 0; - ch->fepstopca = 0; - - ch->close_delay = 50; - ch->count = 0; - ch->blocked_open = 0; - init_waitqueue_head(&ch->open_wait); - init_waitqueue_head(&ch->close_wait); - ch->asyncflags = 0; - } - - if (verbose) - printk("Card No. %d ready: %s (%s) I/O=0x%x Mem=0x%lx Ports=%d\n", - crd+1, board_desc[bd->type], board_mem[bd->type], bd->port, - bd->membase, bd->numports); - else - printk("PC/Xx: %s (%s) I/O=0x%x Mem=0x%lx Ports=%d\n", - board_desc[bd->type], board_mem[bd->type], bd->port, - bd->membase, bd->numports); - - memwinoff(bd, 0); - enabled_cards++; - } - - if (enabled_cards <= 0) { - printk(KERN_NOTICE "PC/Xx: No cards enabled, no driver.\n"); - ret = -EIO; - goto cleanup_boards; - } - - ret = tty_register_driver(pcxe_driver); - if(ret) { - printk(KERN_ERR "Couldn't register PC/Xe driver\n"); - goto cleanup_boards; - } - - /* - * Start up the poller to check for events on all enabled boards - */ - mod_timer(&pcxx_timer, HZ/25); - - if (verbose) - printk(KERN_NOTICE "PC/Xx: Driver with %d card(s) ready.\n", enabled_cards); - - return 0; -cleanup_boards: - cleanup_board_resources(); - kfree(digi_channels); - put_tty_driver(pcxe_driver); - return ret; -} - -module_init(pcxe_init) -module_exit(pcxe_cleanup) - -static void pcxxpoll(unsigned long dummy) -{ - unsigned long flags; - int crd; - volatile unsigned int head, tail; - struct channel *ch; - struct board_info *bd; - - save_flags(flags); - cli(); - - for(crd=0; crd < numcards; crd++) { - bd = &boards[crd]; - - ch = digi_channels+bd->first_minor; - - if(bd->status == DISABLED) - continue; - - assertmemoff(ch); - - globalwinon(ch); - head = ch->mailbox->ein; - tail = ch->mailbox->eout; - - if(head != tail) - doevent(crd); - - memoff(ch); - } - - mod_timer(&pcxx_timer, jiffies + HZ/25); - restore_flags(flags); -} - -static void doevent(int crd) -{ - volatile struct board_info *bd; - static struct tty_struct *tty; - volatile struct board_chan *bc; - volatile unchar *eventbuf; - volatile unsigned int head; - volatile unsigned int tail; - struct channel *ch; - struct channel *chan0; - int channel, event, mstat, lstat; - - bd = &boards[crd]; - - chan0 = digi_channels+bd->first_minor; - pcxxassert(chan0 < digi_channels+nbdevs, "ch out of range"); - - - assertgwinon(chan0); - - while ((tail = chan0->mailbox->eout) != (head = chan0->mailbox->ein)) { - assertgwinon(chan0); - eventbuf = (volatile unchar *)phys_to_virt(bd->membase + tail + ISTART); - channel = eventbuf[0]; - event = eventbuf[1]; - mstat = eventbuf[2]; - lstat = eventbuf[3]; - - ch=chan0+channel; - - if ((unsigned)channel >= bd->numports || !ch) { - printk("physmem=%lx, tail=%x, head=%x\n", bd->membase, tail, head); - printk("doevent(%x) channel %x, event %x, mstat %x, lstat %x\n", - crd, (unsigned)channel, event, (unsigned)mstat, lstat); - if(channel >= bd->numports) - ch = chan0; - bc = ch->brdchan; - goto next; - } - if ((bc = ch->brdchan) == NULL) - goto next; - - if (event & DATA_IND) { - receive_data(ch); - assertgwinon(ch); - } - - if (event & MODEMCHG_IND) { - ch->imodem = mstat; - if (ch->asyncflags & ASYNC_NORMAL_ACTIVE) { - if (ch->asyncflags & ASYNC_CHECK_CD) { - if (mstat & ch->dcd) { - wake_up_interruptible(&ch->open_wait); - } else { - pcxe_sched_event(ch, PCXE_EVENT_HANGUP); - } - } - } - } - - tty = ch->tty; - - if (tty) { - - if (event & BREAK_IND) { - tty->flip.count++; - *tty->flip.flag_buf_ptr++ = TTY_BREAK; - *tty->flip.char_buf_ptr++ = 0; -#if 0 - if (ch->asyncflags & ASYNC_SAK) - do_SAK(tty); -#endif - tty_schedule_flip(tty); - } - - if (event & LOWTX_IND) { - if (ch->statusflags & LOWWAIT) { - ch->statusflags &= ~LOWWAIT; - tty_wakeup(tty); - } - } - - if (event & EMPTYTX_IND) { - ch->statusflags &= ~TXBUSY; - if (ch->statusflags & EMPTYWAIT) { - ch->statusflags &= ~EMPTYWAIT; - tty_wakeup(tty); - } - } - } - - next: - globalwinon(ch); - if(!bc) printk("bc == NULL in doevent!\n"); - else bc->idata = 1; - - chan0->mailbox->eout = (tail+4) & (IMAX-ISTART-4); - globalwinon(chan0); - } - -} - - -static void -fepcmd(struct channel *ch, int cmd, int word_or_byte, int byte2, int ncmds, - int bytecmd) -{ - unchar *memaddr; - unsigned int head, tail; - long count; - int n; - - if(ch->board->status == DISABLED) - return; - - assertgwinon(ch); - - memaddr = (unchar *)phys_to_virt(ch->board->membase); - head = ch->mailbox->cin; - - if(head >= (CMAX-CSTART) || (head & 03)) { - printk("line %d: Out of range, cmd=%x, head=%x\n", __LINE__, cmd, head); - return; - } - - if(bytecmd) { - *(unchar *)(memaddr+head+CSTART+0) = cmd; - - *(unchar *)(memaddr+head+CSTART+1) = ch->dev - ch->board->first_minor; - - *(unchar *)(memaddr+head+CSTART+2) = word_or_byte; - *(unchar *)(memaddr+head+CSTART+3) = byte2; - } else { - *(unchar *)(memaddr+head+CSTART+0) = cmd; - - *(unchar *)(memaddr+head+CSTART+1) = ch->dev - ch->board->first_minor; - *(ushort*)(memaddr+head+CSTART+2) = word_or_byte; - } - - head = (head+4) & (CMAX-CSTART-4); - ch->mailbox->cin = head; - - count = FEPTIMEOUT; - - while(1) { - count--; - if(count == 0) { - printk("Fep not responding in fepcmd()\n"); - return; - } - - head = ch->mailbox->cin; - tail = ch->mailbox->cout; - - n = (head-tail) & (CMAX-CSTART-4); - - if(n <= ncmds * (sizeof(short)*4)) - break; - /* Seems not to be good here: schedule(); */ - } -} - - -static unsigned termios2digi_c(struct channel *ch, unsigned cflag) -{ - unsigned res = 0; - if (cflag & CBAUDEX) - { - ch->digiext.digi_flags |= DIGI_FAST; - res |= FEP_HUPCL; - /* This gets strange but if we don't do this we will get 78600 - * instead of 115200. 57600 is mapped to 50 baud yielding 57600 in - * FAST mode. 115200 is mapped to 75. We need to map it to 110 to - * do 115K - */ - if (cflag & B115200) res|=1; - } - else ch->digiext.digi_flags &= ~DIGI_FAST; - res |= cflag & (CBAUD | PARODD | PARENB | CSTOPB | CSIZE | CLOCAL); - return res; -} - -static unsigned termios2digi_i(struct channel *ch, unsigned iflag) -{ - unsigned res = iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|ISTRIP|IXON|IXANY|IXOFF); - - if(ch->digiext.digi_flags & DIGI_AIXON) - res |= IAIXON; - return res; -} - -static unsigned termios2digi_h(struct channel *ch, unsigned cflag) -{ - unsigned res = 0; - - if(cflag & CRTSCTS) { - ch->digiext.digi_flags |= (RTSPACE|CTSPACE); - res |= (CTS | RTS); - } - if(ch->digiext.digi_flags & RTSPACE) - res |= RTS; - if(ch->digiext.digi_flags & DTRPACE) - res |= DTR; - if(ch->digiext.digi_flags & CTSPACE) - res |= CTS; - if(ch->digiext.digi_flags & DSRPACE) - res |= ch->dsr; - if(ch->digiext.digi_flags & DCDPACE) - res |= ch->dcd; - - if (res & RTS) - ch->digiext.digi_flags |= RTSPACE; - if (res & CTS) - ch->digiext.digi_flags |= CTSPACE; - - return res; -} - -static void pcxxparam(struct tty_struct *tty, struct channel *ch) -{ - volatile struct board_chan *bc; - unsigned int head; - unsigned mval, hflow, cflag, iflag; - struct termios *ts; - - bc = ch->brdchan; - assertgwinon(ch); - ts = tty->termios; - - if((ts->c_cflag & CBAUD) == 0) { - head = bc->rin; - bc->rout = head; - head = bc->tin; - fepcmd(ch, STOUT, (unsigned) head, 0, 0, 0); - mval = 0; - } else { - - cflag = termios2digi_c(ch, ts->c_cflag); - - if(cflag != ch->fepcflag) { - ch->fepcflag = cflag; - fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0); - } - - if(cflag & CLOCAL) - ch->asyncflags &= ~ASYNC_CHECK_CD; - else { - ch->asyncflags |= ASYNC_CHECK_CD; - } - - mval = DTR | RTS; - } - - iflag = termios2digi_i(ch, ts->c_iflag); - - if(iflag != ch->fepiflag) { - ch->fepiflag = iflag; - fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0); - } - - bc->mint = ch->dcd; - if((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD)) - if(ch->digiext.digi_flags & DIGI_FORCEDCD) - bc->mint = 0; - - ch->imodem = bc->mstat; - - hflow = termios2digi_h(ch, ts->c_cflag); - - if(hflow != ch->hflow) { - ch->hflow = hflow; - fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1); - } - - /* mval ^= ch->modemfake & (mval ^ ch->modem); */ - - if(ch->omodem != mval) { - ch->omodem = mval; - fepcmd(ch, SETMODEM, mval, RTS|DTR, 0, 1); - } - - if(ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) { - ch->fepstartc = ch->startc; - ch->fepstopc = ch->stopc; - fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); - } - - if(ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) { - ch->fepstartca = ch->startca; - ch->fepstopca = ch->stopca; - fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); - } -} - - -static void receive_data(struct channel *ch) -{ - volatile struct board_chan *bc; - struct tty_struct *tty; - unsigned int tail, head, wrapmask; - int n; - int piece; - struct termios *ts=0; - unchar *rptr; - int rc; - int wrapgap; - - globalwinon(ch); - - if (ch->statusflags & RXSTOPPED) - return; - - tty = ch->tty; - if(tty) - ts = tty->termios; - - bc = ch->brdchan; - - if(!bc) { - printk("bc is NULL in receive_data!\n"); - return; - } - - wrapmask = ch->rxbufsize - 1; - - head = bc->rin; - head &= wrapmask; - tail = bc->rout & wrapmask; - - n = (head-tail) & wrapmask; - - if(n == 0) - return; - - /* - * If CREAD bit is off or device not open, set TX tail to head - */ - if(!tty || !ts || !(ts->c_cflag & CREAD)) { - bc->rout = head; - return; - } - - if(tty->flip.count == TTY_FLIPBUF_SIZE) { - /* printk("tty->flip.count = TTY_FLIPBUF_SIZE\n"); */ - return; - } - - if(bc->orun) { - bc->orun = 0; - printk("overrun! DigiBoard device %s\n", tty->name); - } - - rxwinon(ch); - rptr = tty->flip.char_buf_ptr; - rc = tty->flip.count; - while(n > 0) { - wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail; - piece = (wrapgap < n) ? wrapgap : n; - - /* - * Make sure we don't overflow the buffer - */ - - if ((rc + piece) > TTY_FLIPBUF_SIZE) - piece = TTY_FLIPBUF_SIZE - rc; - - if (piece == 0) - break; - - memcpy(rptr, ch->rxptr + tail, piece); - rptr += piece; - rc += piece; - tail = (tail + piece) & wrapmask; - n -= piece; - } - tty->flip.count = rc; - tty->flip.char_buf_ptr = rptr; - globalwinon(ch); - bc->rout = tail; - - /* Must be called with global data */ - tty_schedule_flip(ch->tty); - return; -} - - -static int pcxe_tiocmget(struct tty_struct *tty, struct file *file) -{ - struct channel *ch = (struct channel *) tty->driver_data; - volatile struct board_chan *bc; - unsigned long flags; - int mflag = 0; - int mstat; - - if(ch) - bc = ch->brdchan; - else { - printk("ch is NULL in %s!\n", __FUNCTION__); - return(-EINVAL); - } - - save_flags(flags); - cli(); - globalwinon(ch); - mstat = bc->mstat; - memoff(ch); - restore_flags(flags); - - if(mstat & DTR) - mflag |= TIOCM_DTR; - if(mstat & RTS) - mflag |= TIOCM_RTS; - if(mstat & CTS) - mflag |= TIOCM_CTS; - if(mstat & ch->dsr) - mflag |= TIOCM_DSR; - if(mstat & RI) - mflag |= TIOCM_RI; - if(mstat & ch->dcd) - mflag |= TIOCM_CD; - - return mflag; -} - - -static int pcxe_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) -{ - struct channel *ch = (struct channel *) tty->driver_data; - volatile struct board_chan *bc; - unsigned long flags; - - if(ch) - bc = ch->brdchan; - else { - printk("ch is NULL in %s!\n", __FUNCTION__); - return(-EINVAL); - } - - save_flags(flags); - cli(); - /* - * I think this modemfake stuff is broken. It doesn't - * correctly reflect the behaviour desired by the TIOCM* - * ioctls. Therefore this is probably broken. - */ - if (set & TIOCM_DTR) { - ch->modemfake |= DTR; - ch->modem |= DTR; - } - if (set & TIOCM_RTS) { - ch->modemfake |= RTS; - ch->modem |= RTS; - } - - if (clear & TIOCM_DTR) { - ch->modemfake |= DTR; - ch->modem &= ~DTR; - } - if (clear & TIOCM_RTS) { - ch->modemfake |= RTS; - ch->modem &= ~RTS; - } - globalwinon(ch); - pcxxparam(tty,ch); - memoff(ch); - restore_flags(flags); - return 0; -} - - -static int pcxe_ioctl(struct tty_struct *tty, struct file * file, - unsigned int cmd, unsigned long arg) -{ - struct channel *ch = (struct channel *) tty->driver_data; - volatile struct board_chan *bc; - int retval; - unsigned int mflag, mstat; - unsigned char startc, stopc; - unsigned long flags; - digiflow_t dflow; - - if(ch) - bc = ch->brdchan; - else { - printk("ch is NULL in pcxe_ioctl!\n"); - return(-EINVAL); - } - - save_flags(flags); - - switch(cmd) { - case TCSBRK: /* SVID version: non-zero arg --> no break */ - retval = tty_check_change(tty); - if(retval) - return retval; - setup_empty_event(tty,ch); - tty_wait_until_sent(tty, 0); - if(!arg) - digi_send_break(ch, HZ/4); /* 1/4 second */ - return 0; - - case TCSBRKP: /* support for POSIX tcsendbreak() */ - retval = tty_check_change(tty); - if(retval) - return retval; - setup_empty_event(tty,ch); - tty_wait_until_sent(tty, 0); - digi_send_break(ch, arg ? arg*(HZ/10) : HZ/4); - return 0; - - case TIOCGSOFTCAR: - return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned int *)arg); - - case TIOCSSOFTCAR: - { - unsigned int value; - if (get_user(value, (unsigned int *) arg)) - return -EFAULT; - tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (value ? CLOCAL : 0)); - } - return 0; - - case TIOCMODG: - mflag = pcxe_tiocmget(tty, file); - if (put_user(mflag, (unsigned int *) arg)) - return -EFAULT; - break; - - case TIOCMODS: - if (get_user(mstat, (unsigned int *) arg)) - return -EFAULT; - return pcxe_tiocmset(tty, file, mstat, ~mstat); - - case TIOCSDTR: - cli(); - ch->omodem |= DTR; - globalwinon(ch); - fepcmd(ch, SETMODEM, DTR, 0, 10, 1); - memoff(ch); - restore_flags(flags); - break; - - case TIOCCDTR: - ch->omodem &= ~DTR; - cli(); - globalwinon(ch); - fepcmd(ch, SETMODEM, 0, DTR, 10, 1); - memoff(ch); - restore_flags(flags); - break; - - case DIGI_GETA: - if (copy_to_user((char*)arg, &ch->digiext, sizeof(digi_t))) - return -EFAULT; - break; - - case DIGI_SETAW: - case DIGI_SETAF: - if(cmd == DIGI_SETAW) { - setup_empty_event(tty,ch); - tty_wait_until_sent(tty, 0); - } - else { - tty_ldisc_flush(tty); - } - - /* Fall Thru */ - - case DIGI_SETA: - if (copy_from_user(&ch->digiext, (char*)arg, sizeof(digi_t))) - return -EFAULT; -#ifdef DEBUG_IOCTL - printk("ioctl(DIGI_SETA): flags = %x\n", ch->digiext.digi_flags); -#endif - - if(ch->digiext.digi_flags & DIGI_ALTPIN) { - ch->dcd = DSR; - ch->dsr = CD; - } else { - ch->dcd = CD; - ch->dsr = DSR; - } - - cli(); - globalwinon(ch); - pcxxparam(tty,ch); - memoff(ch); - restore_flags(flags); - break; - - case DIGI_GETFLOW: - case DIGI_GETAFLOW: - cli(); - globalwinon(ch); - if(cmd == DIGI_GETFLOW) { - dflow.startc = bc->startc; - dflow.stopc = bc->stopc; - } else { - dflow.startc = bc->startca; - dflow.stopc = bc->stopca; - } - memoff(ch); - restore_flags(flags); - - if (copy_to_user((char*)arg, &dflow, sizeof(dflow))) - return -EFAULT; - break; - - case DIGI_SETAFLOW: - case DIGI_SETFLOW: - if(cmd == DIGI_SETFLOW) { - startc = ch->startc; - stopc = ch->stopc; - } else { - startc = ch->startca; - stopc = ch->stopca; - } - - if (copy_from_user(&dflow, (char*)arg, sizeof(dflow))) - return -EFAULT; - - if(dflow.startc != startc || dflow.stopc != stopc) { - cli(); - globalwinon(ch); - - if(cmd == DIGI_SETFLOW) { - ch->fepstartc = ch->startc = dflow.startc; - ch->fepstopc = ch->stopc = dflow.stopc; - fepcmd(ch,SONOFFC,ch->fepstartc,ch->fepstopc,0, 1); - } else { - ch->fepstartca = ch->startca = dflow.startc; - ch->fepstopca = ch->stopca = dflow.stopc; - fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); - } - - if(ch->statusflags & TXSTOPPED) - pcxe_start(tty); - - memoff(ch); - restore_flags(flags); - } - break; - - default: - return -ENOIOCTLCMD; - } - - return 0; -} - -static void pcxe_set_termios(struct tty_struct *tty, struct termios *old_termios) -{ - struct channel *info; - - if ((info=chan(tty))!=NULL) { - unsigned long flags; - save_flags(flags); - cli(); - globalwinon(info); - pcxxparam(tty,info); - memoff(info); - - if ((old_termios->c_cflag & CRTSCTS) && - ((tty->termios->c_cflag & CRTSCTS) == 0)) - tty->hw_stopped = 0; - if(!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&info->open_wait); - restore_flags(flags); - } -} - - - -static void do_softint(void *private_) -{ - struct channel *info = (struct channel *) private_; - - if(info && info->magic == PCXX_MAGIC) { - struct tty_struct *tty = info->tty; - if (tty && tty->driver_data) { - if(test_and_clear_bit(PCXE_EVENT_HANGUP, &info->event)) { - tty_hangup(tty); - wake_up_interruptible(&info->open_wait); - info->asyncflags &= ~ASYNC_NORMAL_ACTIVE; - } - } - } -} - - -static void pcxe_stop(struct tty_struct *tty) -{ - struct channel *info; - - if ((info=chan(tty))!=NULL) { - unsigned long flags; - save_flags(flags); - cli(); - if ((info->statusflags & TXSTOPPED) == 0) { - globalwinon(info); - fepcmd(info, PAUSETX, 0, 0, 0, 0); - info->statusflags |= TXSTOPPED; - memoff(info); - } - restore_flags(flags); - } -} - -static void pcxe_throttle(struct tty_struct * tty) -{ - struct channel *info; - - if ((info=chan(tty))!=NULL) { - unsigned long flags; - save_flags(flags); - cli(); - if ((info->statusflags & RXSTOPPED) == 0) { - globalwinon(info); - fepcmd(info, PAUSERX, 0, 0, 0, 0); - info->statusflags |= RXSTOPPED; - memoff(info); - } - restore_flags(flags); - } -} - -static void pcxe_unthrottle(struct tty_struct *tty) -{ - struct channel *info; - - if ((info=chan(tty)) != NULL) { - unsigned long flags; - - /* Just in case output was resumed because of a change in Digi-flow */ - save_flags(flags); - cli(); - if(info->statusflags & RXSTOPPED) { - volatile struct board_chan *bc; - globalwinon(info); - bc = info->brdchan; - fepcmd(info, RESUMERX, 0, 0, 0, 0); - info->statusflags &= ~RXSTOPPED; - memoff(info); - } - restore_flags(flags); - } -} - - -static void pcxe_start(struct tty_struct *tty) -{ - struct channel *info; - - if ((info=chan(tty))!=NULL) { - unsigned long flags; - - save_flags(flags); - cli(); - /* Just in case output was resumed because of a change in Digi-flow */ - if(info->statusflags & TXSTOPPED) { - volatile struct board_chan *bc; - globalwinon(info); - bc = info->brdchan; - if(info->statusflags & LOWWAIT) - bc->ilow = 1; - fepcmd(info, RESUMETX, 0, 0, 0, 0); - info->statusflags &= ~TXSTOPPED; - memoff(info); - } - restore_flags(flags); - } -} - - -void digi_send_break(struct channel *ch, int msec) -{ - unsigned long flags; - - save_flags(flags); - cli(); - globalwinon(ch); - - /* - * Maybe I should send an infinite break here, schedule() for - * msec amount of time, and then stop the break. This way, - * the user can't screw up the FEP by causing digi_send_break() - * to be called (i.e. via an ioctl()) more than once in msec amount - * of time. Try this for now... - */ - - fepcmd(ch, SENDBREAK, msec, 0, 10, 0); - memoff(ch); - - restore_flags(flags); -} - -static void setup_empty_event(struct tty_struct *tty, struct channel *ch) -{ - volatile struct board_chan *bc; - unsigned long flags; - - save_flags(flags); - cli(); - globalwinon(ch); - ch->statusflags |= EMPTYWAIT; - bc = ch->brdchan; - bc->iempty = 1; - memoff(ch); - restore_flags(flags); -} - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
