diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 8942d16c34953cdc85b857ed9c8953baecdb8c4c..d0946f5d4bb57329b486cecd1eef918c3c6e603e 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -70,7 +70,6 @@ obj-$(CONFIG_QIC02_TAPE) += tpqic02.o
obj-$(CONFIG_FTAPE) += ftape/
obj-$(CONFIG_H8) += h8.o
obj-$(CONFIG_PPDEV) += ppdev.o
-obj-$(CONFIG_DZ) += dz.o
obj-$(CONFIG_NWBUTTON) += nwbutton.o
obj-$(CONFIG_NWFLASH) += nwflash.o
obj-$(CONFIG_SCx200_GPIO) += scx200_gpio.o
diff --git a/drivers/char/dz.c b/drivers/char/dz.c
deleted file mode 100644
index 23630030e6d8ab09a7cc1b46f6a451144b71ae9a..0000000000000000000000000000000000000000
--- a/drivers/char/dz.c
+++ /dev/null
@@ -1,1540 +0,0 @@
-/*
- * dz.c: Serial port driver for DECStations equiped
- * with the DZ chipset.
- *
- * Copyright (C) 1998 Olivier A. D. Lebaillif
- *
- * Email: olivier.lebaillif@ifrsys.com
- *
- * [31-AUG-98] triemer
- * Changed IRQ to use Harald's dec internals interrupts.h
- * removed base_addr code - moving address assignment to setup.c
- * Changed name of dz_init to rs_init to be consistent with tc code
- * [13-NOV-98] triemer fixed code to receive characters
- * after patches by harald to irq code.
- * [09-JAN-99] triemer minor fix for schedule - due to removal of timeout
- * field from "current" - somewhere between 2.1.121 and 2.1.131
-Qua Jun 27 15:02:26 BRT 2001
- * [27-JUN-2001] Arnaldo Carvalho de Melo <acme@conectiva.com.br> - cleanups
- *
- * Parts (C) 1999 David Airlie, airlied@linux.ie
- * [07-SEP-99] Bugfixes
- */
-
-/* #define DEBUG_DZ 1 */
-
-#include <linux/module.h>
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/major.h>
-#include <linux/param.h>
-#include <linux/interrupt.h>
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <asm-mips/wbflush.h>
-#include <asm/dec/interrupts.h> /* for definition of SERIAL */
-
-/* for definition of struct console */
-#ifdef CONFIG_SERIAL_CONSOLE
-#define CONSOLE_LINE (3)
-#endif /* ifdef CONFIG_SERIAL_CONSOLE */
-#if defined(CONFIG_SERIAL_CONSOLE) || defined(DEBUG_DZ)
-#include <linux/console.h>
-#endif /* if defined(CONFIG_SERIAL_CONSOLE) || defined(DEBUG_DZ) */
-
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-
-#include <asm/uaccess.h>
-#include <asm/irq.h>
-#include <asm/dec/machtype.h>
-#include <asm/dec/kn01.h>
-#include <asm/dec/kn02.h>
-
-#ifdef DEBUG_DZ
-#include <linux/ptrace.h>
-#include <linux/fs.h>
-#include <asm/bootinfo.h>
-
-extern int (*prom_printf) (char *,...);
-#endif
-
-
-
-#include "dz.h"
-
-#define DZ_INTR_DEBUG 1
-
-DECLARE_TASK_QUEUE(tq_serial);
-
-static struct dz_serial *lines[4];
-static unsigned char tmp_buffer[256];
-
-
-
-#ifdef DEBUG_DZ
-/*
- * debugging code to send out chars via prom
- */
-static void debug_console( const char *s,int count)
-{
- unsigned i;
-
- for (i = 0; i < count; i++) {
- if (*s == 10)
- prom_printf("%c", 13);
- prom_printf("%c", *s++);
- }
-}
-#endif
-
-/*
- * ------------------------------------------------------------
- * dz_in () and dz_out ()
- *
- * These routines are used to access the registers of the DZ
- * chip, hiding relocation differences between implementation.
- * ------------------------------------------------------------
- */
-
-static inline unsigned short dz_in (struct dz_serial *info, unsigned offset)
-{
- volatile u16 *addr = (volatile u16 *)(info->port + offset);
-
- return *addr;
-}
-
-static inline void dz_out (struct dz_serial *info, unsigned offset,
- unsigned short value)
-{
- volatile u16 *addr = (volatile u16 *)(info->port + offset);
- *addr = value;
-}
-
-/*
- * ------------------------------------------------------------
- * rs_stop () and rs_start ()
- *
- * These routines are called before setting or resetting
- * tty->stopped. They enable or disable transmitter interrupts,
- * as necessary.
- * ------------------------------------------------------------
- */
-
-static void dz_stop (struct tty_struct *tty)
-{
- struct dz_serial *info;
- unsigned short mask, tmp;
-
- if (!tty)
- return;
-
- info = (struct dz_serial *)tty->driver_data;
-
- mask = 1 << info->line;
- tmp = dz_in (info, DZ_TCR); /* read the TX flag */
-
- tmp &= ~mask; /* clear the TX flag */
- dz_out (info, DZ_TCR, tmp);
-}
-
-static void dz_start (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
- unsigned short mask, tmp;
-
- mask = 1 << info->line;
- tmp = dz_in (info, DZ_TCR); /* read the TX flag */
-
- tmp |= mask; /* set the TX flag */
- dz_out (info, DZ_TCR, tmp);
-}
-
-/*
- * ------------------------------------------------------------
- * Here starts the interrupt handling routines. All of the
- * following subroutines are declared as inline and are folded
- * into dz_interrupt. They were separated out for readability's
- * sake.
- *
- * Note: rs_interrupt() is a "fast" interrupt, which means that it
- * runs with interrupts turned off. People who may want to modify
- * rs_interrupt() should try to keep the interrupt handler as fast as
- * possible. After you are done making modifications, it is not a bad
- * idea to do:
- *
- * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer dz.c
- *
- * and look at the resulting assemble code in serial.s.
- *
- * ------------------------------------------------------------
- */
-
-/*
- * ------------------------------------------------------------
- * dz_sched_event ()
- *
- * This routine is used by the interrupt handler to schedule
- * processing in the software interrupt portion of the driver.
- * ------------------------------------------------------------
- */
-static inline void dz_sched_event (struct dz_serial *info, int event)
-{
- info->event |= 1 << event;
- queue_task(&info->tqueue, &tq_serial);
- mark_bh(SERIAL_BH);
-}
-
-/*
- * ------------------------------------------------------------
- * receive_char ()
- *
- * This routine deals with inputs from any lines.
- * ------------------------------------------------------------
- */
-static inline void receive_chars (struct dz_serial *info_in)
-{
- struct dz_serial *info;
- struct tty_struct *tty = 0;
- struct async_icount *icount;
- int ignore = 0;
- unsigned short status, tmp;
- unsigned char ch;
-
- /*
- * This code is going to be a problem... the call to tty_flip_buffer
- * is going to need to be rethought...
- */
- do {
- status = dz_in (info_in, DZ_RBUF);
- info = lines[LINE(status)];
-
- /* punt so we don't get duplicate characters */
- if (!(status & DZ_DVAL))
- goto ignore_char;
-
- ch = UCHAR(status); /* grab the char */
-
-#if 0
- if (info->is_console) {
- if (ch == 0)
- return; /* it's a break ... */
- }
-#endif
-
- tty = info->tty; /* now tty points to the proper dev */
- icount = &info->icount;
-
- if (!tty)
- break;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
-
- *tty->flip.char_buf_ptr = ch;
- *tty->flip.flag_buf_ptr = 0;
- icount->rx++;
-
- /* keep track of the statistics */
- if (status & (DZ_OERR | DZ_FERR | DZ_PERR)) {
- if (status & DZ_PERR) /* parity error */
- icount->parity++;
- else if (status & DZ_FERR) /* frame error */
- icount->frame++;
- if (status & DZ_OERR) /* overrun error */
- icount->overrun++;
-
- /*
- * Check to see if we should ignore the character and
- * mask off conditions that should be ignored
- */
-
- if (status & info->ignore_status_mask) {
- if (++ignore > 100)
- break;
- goto ignore_char;
- }
-
- /* mask off the error conditions we want to ignore */
- tmp = status & info->read_status_mask;
-
- if (tmp & DZ_PERR) {
- *tty->flip.flag_buf_ptr = TTY_PARITY;
-#ifdef DEBUG_DZ
- debug_console("PERR\n",5);
-#endif /* DEBUG_DZ */
- } else if (tmp & DZ_FERR) {
- *tty->flip.flag_buf_ptr = TTY_FRAME;
-#ifdef DEBUG_DZ
- debug_console("FERR\n",5);
-#endif /* DEBUG_DZ */
- } if (tmp & DZ_OERR) {
-#ifdef DEBUG_DZ
- debug_console("OERR\n",5);
-#endif /* DEBUG_DZ */
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- tty->flip.count++;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- *tty->flip.flag_buf_ptr = TTY_OVERRUN;
- }
- }
- }
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
-ignore_char:
- ;
- } while (status & DZ_DVAL);
-
- if (tty)
- tty_flip_buffer_push(tty);
-}
-
-/*
- * ------------------------------------------------------------
- * transmit_char ()
- *
- * This routine deals with outputs to any lines.
- * ------------------------------------------------------------
- */
-static inline void transmit_chars (struct dz_serial *info)
-{
- unsigned char tmp;
-
- if (info->x_char) { /* XON/XOFF chars */
- dz_out(info, DZ_TDR, info->x_char);
- info->icount.tx++;
- info->x_char = 0;
- return;
- }
-
- /* if nothing to do or stopped or hardware stopped */
- if ((info->xmit_cnt <= 0) || info->tty->stopped ||
- info->tty->hw_stopped) {
- dz_stop(info->tty);
- return;
- }
-
- /*
- * If something to do ... (rember the dz has no output fifo so we go
- * one char at a time :-<
- */
- tmp = (unsigned short) info->xmit_buf[info->xmit_tail++];
- dz_out(info, DZ_TDR, tmp);
- info->xmit_tail = info->xmit_tail & (DZ_XMIT_SIZE - 1);
- info->icount.tx++;
-
- if (--info->xmit_cnt < WAKEUP_CHARS)
- dz_sched_event(info, DZ_EVENT_WRITE_WAKEUP);
-
- /* Are we done */
- if (info->xmit_cnt <= 0)
- dz_stop(info->tty);
-}
-
-/*
- * ------------------------------------------------------------
- * check_modem_status ()
- *
- * Only valid for the MODEM line duh !
- * ------------------------------------------------------------
- */
-static inline void check_modem_status (struct dz_serial *info)
-{
- unsigned short status;
-
- /* if not ne modem line just return */
- if (info->line != DZ_MODEM)
- return;
-
- status = dz_in(info, DZ_MSR);
-
- /* it's easy, since DSR2 is the only bit in the register */
- if (status)
- info->icount.dsr++;
-}
-
-/*
- * ------------------------------------------------------------
- * dz_interrupt ()
- *
- * this is the main interrupt routine for the DZ chip.
- * It deals with the multiple ports.
- * ------------------------------------------------------------
- */
-static void dz_interrupt (int irq, void *dev, struct pt_regs *regs)
-{
- struct dz_serial *info;
- unsigned short status;
-
- /* get the reason why we just got an irq */
- status = dz_in((struct dz_serial *)dev, DZ_CSR);
- info = lines[LINE(status)]; /* re-arrange info the proper port */
-
- if (status & DZ_RDONE)
- receive_chars(info); /* the receive function */
-
- if (status & DZ_TRDY)
- transmit_chars (info);
-}
-
-/*
- * -------------------------------------------------------------------
- * Here ends the DZ interrupt routines.
- * -------------------------------------------------------------------
- */
-
-/*
- * This routine is used to handle the "bottom half" processing for the
- * serial driver, known also the "software interrupt" processing.
- * This processing is done at the kernel interrupt level, after the
- * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
- * is where time-consuming activities which can not be done in the
- * interrupt driver proper are done; the interrupt driver schedules
- * them using rs_sched_event(), and they get done here.
- */
-static void do_serial_bh (void)
-{
- run_task_queue (&tq_serial);
-}
-
-static void do_softint (void *private_data)
-{
- struct dz_serial *info = (struct dz_serial *) private_data;
- struct tty_struct *tty = info->tty;
-
- if (!tty)
- return;
-
- if (test_and_clear_bit(DZ_EVENT_WRITE_WAKEUP, &info->event)) {
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup) (tty);
- wake_up_interruptible (&tty->write_wait);
- }
-}
-
-/*
- * -------------------------------------------------------------------
- * This routine is called from the scheduler tqueue when the interrupt
- * routine has signalled that a hangup has occurred. The path of
- * hangup processing is:
- *
- * serial interrupt routine -> (scheduler tqueue) ->
- * do_serial_hangup() -> tty->hangup() -> rs_hangup()
- * -------------------------------------------------------------------
- */
-static void do_serial_hangup (void *private_data)
-{
- struct dz_serial *info = (struct dz_serial *) private_data;
- struct tty_struct *tty = info->tty;
-
- if (!tty)
- return;
-
- tty_hangup(tty);
-}
-
-/*
- * -------------------------------------------------------------------
- * startup ()
- *
- * various initialization tasks
- * -------------------------------------------------------------------
- */
-static int startup (struct dz_serial *info)
-{
- unsigned long page, flags;
- unsigned short tmp;
-
- if (info->is_initialized)
- return 0;
-
- save_and_cli(flags);
-
- if (!info->port) {
- if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
- restore_flags(flags);
- return -ENODEV;
- }
-
- if (!info->xmit_buf) {
- page = get_zeroed_page(GFP_KERNEL);
- if (!page) {
- restore_flags (flags);
- return -ENOMEM;
- }
- info->xmit_buf = (unsigned char *)page;
- }
-
- if (info->tty)
- clear_bit(TTY_IO_ERROR, &info->tty->flags);
-
- /* enable the interrupt and the scanning */
- tmp = dz_in(info, DZ_CSR);
- tmp |= (DZ_RIE | DZ_TIE | DZ_MSE);
- dz_out(info, DZ_CSR, tmp);
-
- info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
-
- change_speed(info); /* set up the speed */
-
- /*
- * Clear the line transmitter buffer I can't figure out why I need to
- * do this - but its necessary - in order for the console portion and
- * the interrupt portion to live happily side by side.
- */
-
- info->is_initialized = 1;
-
- restore_flags(flags);
-
- return 0;
-}
-
-/*
- * -------------------------------------------------------------------
- * shutdown ()
- *
- * This routine will shutdown a serial port; interrupts are disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- * -------------------------------------------------------------------
- */
-static void shutdown (struct dz_serial *info)
-{
- unsigned long flags;
- unsigned short tmp;
-
- if (!info->is_initialized)
- return;
-
- save_and_cli(flags);
-
- dz_stop (info->tty);
-
- info->cflags &= ~DZ_CREAD; /* turn off receive enable flag */
- dz_out(info, DZ_LPR, info->cflags);
-
- if (info->xmit_buf) { /* free Tx buffer */
- free_page((unsigned long)info->xmit_buf);
- info->xmit_buf = 0;
- }
-
- if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) {
- tmp = dz_in(info, DZ_TCR);
- if (tmp & DZ_MODEM_DTR) {
- tmp &= ~DZ_MODEM_DTR;
- dz_out(info, DZ_TCR, tmp);
- }
- }
-
- if (info->tty)
- set_bit (TTY_IO_ERROR, &info->tty->flags);
-
- info->is_initialized = 0;
-
- restore_flags (flags);
-}
-
-/*
- * -------------------------------------------------------------------
- * change_speed ()
- *
- * set the baud rate.
- * -------------------------------------------------------------------
- */
-static void change_speed (struct dz_serial *info)
-{
- unsigned long flags;
- unsigned cflag;
- int baud;
-
- if (!info->tty || !info->tty->termios)
- return;
-
- save_and_cli(flags);
-
- info->cflags = info->line;
-
- cflag = info->tty->termios->c_cflag;
-
- switch (cflag & CSIZE) {
- case CS5:
- info->cflags |= DZ_CS5;
- break;
- case CS6:
- info->cflags |= DZ_CS6;
- break;
- case CS7:
- info->cflags |= DZ_CS7;
- break;
- case CS8:
- default:
- info->cflags |= DZ_CS8;
- }
-
- if (cflag & CSTOPB)
- info->cflags |= DZ_CSTOPB;
- if (cflag & PARENB)
- info->cflags |= DZ_PARENB;
- if (cflag & PARODD)
- info->cflags |= DZ_PARODD;
-
- baud = tty_get_baud_rate(info->tty);
- switch (baud) {
- case 50:
- info->cflags |= DZ_B50;
- break;
- case 75:
- info->cflags |= DZ_B75;
- break;
- case 110:
- info->cflags |= DZ_B110;
- break;
- case 134:
- info->cflags |= DZ_B134;
- break;
- case 150:
- info->cflags |= DZ_B150;
- break;
- case 300:
- info->cflags |= DZ_B300;
- break;
- case 600:
- info->cflags |= DZ_B600;
- break;
- case 1200:
- info->cflags |= DZ_B1200;
- break;
- case 1800:
- info->cflags |= DZ_B1800;
- break;
- case 2000:
- info->cflags |= DZ_B2000;
- break;
- case 2400:
- info->cflags |= DZ_B2400;
- break;
- case 3600:
- info->cflags |= DZ_B3600;
- break;
- case 4800:
- info->cflags |= DZ_B4800;
- break;
- case 7200:
- info->cflags |= DZ_B7200;
- break;
- case 9600:
- default:
- info->cflags |= DZ_B9600;
- }
-
- info->cflags |= DZ_RXENAB;
- dz_out(info, DZ_LPR, info->cflags);
-
- /* setup accept flag */
- info->read_status_mask = DZ_OERR;
- if (I_INPCK(info->tty))
- info->read_status_mask |= (DZ_FERR | DZ_PERR);
-
- /* characters to ignore */
- info->ignore_status_mask = 0;
- if (I_IGNPAR(info->tty))
- info->ignore_status_mask |= (DZ_FERR | DZ_PERR);
-
- restore_flags(flags);
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_flush_char ()
- *
- * Flush the buffer.
- * -------------------------------------------------------------------
- */
-static void dz_flush_chars (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
- unsigned long flags;
-
- if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
- !info->xmit_buf)
- return;
-
- save_and_cli(flags);
- dz_start (info->tty);
- restore_flags(flags);
-}
-
-
-/*
- * -------------------------------------------------------------------
- * dz_write ()
- *
- * main output routine.
- * -------------------------------------------------------------------
- */
-static int dz_write (struct tty_struct *tty, int from_user,
- const unsigned char *buf, int count)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
- unsigned long flags;
- int c, ret = 0;
-
- if (!tty )
- return ret;
- if (!info->xmit_buf)
- return ret;
- if (!tmp_buf)
- tmp_buf = tmp_buffer;
-
- if (from_user) {
- down (&tmp_buf_sem);
- while (1) {
- c = MIN(count, MIN(DZ_XMIT_SIZE - info->xmit_cnt - 1,
- DZ_XMIT_SIZE - info->xmit_head));
- if (c <= 0)
- break;
-
- c -= copy_from_user (tmp_buf, buf, c);
- if (!c) {
- if (!ret)
- ret = -EFAULT;
- break;
- }
-
- save_and_cli(flags);
-
- c = MIN(c, MIN(DZ_XMIT_SIZE - info->xmit_cnt - 1,
- DZ_XMIT_SIZE - info->xmit_head));
- memcpy(info->xmit_buf + info->xmit_head, tmp_buf, c);
- info->xmit_head = ((info->xmit_head + c) &
- (DZ_XMIT_SIZE - 1));
- info->xmit_cnt += c;
- restore_flags(flags);
-
- buf += c;
- count -= c;
- ret += c;
- }
- up(&tmp_buf_sem);
- } else {
- while (1) {
- save_and_cli(flags);
-
- c = MIN(count, MIN(DZ_XMIT_SIZE - info->xmit_cnt - 1,
- DZ_XMIT_SIZE - info->xmit_head));
- if (c <= 0) {
- restore_flags (flags);
- break;
- }
- memcpy(info->xmit_buf + info->xmit_head, buf, c);
- info->xmit_head = ((info->xmit_head + c) &
- (DZ_XMIT_SIZE-1));
- info->xmit_cnt += c;
- restore_flags(flags);
-
- buf += c;
- count -= c;
- ret += c;
- }
- }
-
- if (info->xmit_cnt) {
- if (!tty->stopped) {
- if (!tty->hw_stopped) {
- dz_start (info->tty);
- }
- }
- }
-
- return ret;
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_write_room ()
- *
- * compute the amount of space available for writing.
- * -------------------------------------------------------------------
- */
-static int dz_write_room (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
- int ret;
-
- ret = DZ_XMIT_SIZE - info->xmit_cnt - 1;
- if (ret < 0)
- ret = 0;
-
- return ret;
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_chars_in_buffer ()
- *
- * compute the amount of char left to be transmitted
- * -------------------------------------------------------------------
- */
-static int dz_chars_in_buffer (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- return info->xmit_cnt;
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_flush_buffer ()
- *
- * Empty the output buffer
- * -------------------------------------------------------------------
- */
-static void dz_flush_buffer (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- cli();
- info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
- sti();
-
- wake_up_interruptible (&tty->write_wait);
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- tty->ldisc.write_wakeup(tty);
-}
-
-/*
- * ------------------------------------------------------------
- * dz_throttle () and dz_unthrottle ()
- *
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled (or not).
- * ------------------------------------------------------------
- */
-static void dz_throttle (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- if (I_IXOFF(tty))
- info->x_char = STOP_CHAR(tty);
-}
-
-static void dz_unthrottle (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- if (I_IXOFF(tty)) {
- if (info->x_char)
- info->x_char = 0;
- else
- info->x_char = START_CHAR(tty);
- }
-}
-
-static void dz_send_xchar (struct tty_struct *tty, char ch)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- info->x_char = ch;
-
- if (ch)
- dz_start(info->tty);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_ioctl () and friends
- * ------------------------------------------------------------
- */
-static int get_serial_info(struct dz_serial *info,
- struct serial_struct *retinfo)
-{
- struct serial_struct tmp;
-
- if (!retinfo)
- return -EFAULT;
-
- memset (&tmp, 0, sizeof(tmp));
-
- tmp.type = info->type;
- tmp.line = info->line;
- tmp.port = info->port;
- tmp.irq = SERIAL;
- tmp.flags = info->flags;
- tmp.baud_base = info->baud_base;
- tmp.close_delay = info->close_delay;
- tmp.closing_wait = info->closing_wait;
-
- return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
-}
-
-static int set_serial_info (struct dz_serial *info,
- struct serial_struct *new_info)
-{
- struct serial_struct new_serial;
- struct dz_serial old_info;
- int retval = 0;
-
- if (!new_info)
- return -EFAULT;
-
- if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
- return -EFAULT;
-
- old_info = *info;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (info->count > 1)
- return -EBUSY;
-
- /*
- * OK, past this point, all the error checking has been done.
- * At this point, we start making changes.....
- */
-
- info->baud_base = new_serial.baud_base;
- info->type = new_serial.type;
- info->close_delay = new_serial.close_delay;
- info->closing_wait = new_serial.closing_wait;
-
- retval = startup(info);
-
- return retval;
-}
-
-/*
- * get_lsr_info - get line status register info
- *
- * Purpose: Let user call ioctl() to get info when the UART physically
- * is emptied. On bus types like RS485, the transmitter must
- * release the bus after transmitting. This must be done when
- * the transmit shift register is empty, not be done when the
- * transmit holding register is empty. This functionality
- * allows an RS485 driver to be written in user space.
- */
-static int get_lsr_info (struct dz_serial *info, unsigned int *value)
-{
- unsigned short status = dz_in (info, DZ_LPR);
-
- return put_user (status, value);
-}
-
-/*
- * This routine sends a break character out the serial port.
- */
-static void send_break (struct dz_serial *info, int duration)
-{
- unsigned long flags;
- unsigned short tmp, mask;
-
- if (!info->port)
- return;
-
- mask = 1 << info->line;
- tmp = dz_in (info, DZ_TCR);
- tmp |= mask;
-
- current->state = TASK_INTERRUPTIBLE;
-
- save_and_cli(flags);
- dz_out(info, DZ_TCR, tmp);
- schedule_timeout(duration);
- tmp &= ~mask;
- dz_out(info, DZ_TCR, tmp);
- restore_flags(flags);
-}
-
-static int dz_ioctl(struct tty_struct *tty, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int error;
- struct dz_serial * info = (struct dz_serial *)tty->driver_data;
- int retval;
-
- if (cmd != TIOCGSERIAL && cmd != TIOCSSERIAL &&
- cmd != TIOCSERCONFIG && cmd != TIOCSERGWILD &&
- cmd != TIOCSERSWILD && cmd != TIOCSERGSTRUCT) {
- if (tty->flags & (1 << TTY_IO_ERROR))
- return -EIO;
- }
-
- switch (cmd) {
- case TCSBRK: /* SVID version: non-zero arg --> no break */
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- if (!arg)
- send_break(info, HZ/4); /* 1/4 second */
- return 0;
-
- case TCSBRKP: /* support for POSIX tcsendbreak() */
- retval = tty_check_change(tty);
- if (retval)
- return retval;
- tty_wait_until_sent(tty, 0);
- send_break(info, arg ? arg*(HZ/10) : HZ/4);
- return 0;
-
- case TIOCGSOFTCAR:
- return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *)arg);
-
- case TIOCSSOFTCAR:
- if (get_user (arg, (unsigned long *)arg))
- return -EFAULT;
-
- tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) |
- (arg ? CLOCAL : 0);
- return 0;
-
- case TIOCGSERIAL:
- return get_serial_info(info, (struct serial_struct *)arg);
-
- case TIOCSSERIAL:
- return set_serial_info(info, (struct serial_struct *) arg);
-
- case TIOCSERGETLSR: /* Get line status register */
- return get_lsr_info (info, (unsigned int *)arg);
-
- case TIOCSERGSTRUCT:
- return copy_to_user((struct dz_serial *)arg, info,
- sizeof(struct dz_serial)) ? -EFAULT : 0;
-
- default:
- return -ENOIOCTLCMD;
- }
-
- return 0;
-}
-
-static void dz_set_termios (struct tty_struct *tty,
- struct termios *old_termios)
-{
- struct dz_serial *info = (struct dz_serial *)tty->driver_data;
-
- if (tty->termios->c_cflag == old_termios->c_cflag)
- return;
-
- change_speed (info);
-
- if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
- dz_start(tty);
- }
-}
-
-/*
- * ------------------------------------------------------------
- * dz_close()
- *
- * This routine is called when the serial port gets closed. First, we
- * wait for the last remaining data to be sent. Then, we turn off
- * the transmit enable and receive enable flags.
- * ------------------------------------------------------------
- */
-static void dz_close(struct tty_struct *tty, struct file *filp)
-{
- struct dz_serial * info = (struct dz_serial *)tty->driver_data;
- unsigned long flags;
-
- if (!info)
- return;
-
- save_and_cli(flags);
-
- if (tty_hung_up_p(filp)) {
- restore_flags(flags);
- return;
- }
-
- 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("dz_close: bad serial port count; tty->count is 1, "
- "info->count is %d\n", info->count);
- info->count = 1;
- }
-
- if (--info->count < 0) {
- printk("ds_close: bad serial port count for ttyS%02d: %d\n",
- info->line, info->count);
- info->count = 0;
- }
-
- if (info->count) {
- restore_flags(flags);
- return;
- }
- info->flags |= DZ_CLOSING;
- /*
- * Now we wait for the transmit buffer to clear; and we notify the line
- * discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
-
- if (info->closing_wait != DZ_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->closing_wait);
-
- /*
- * At this point we stop accepting input. To do this, we disable the
- * receive line status interrupts.
- */
- shutdown(info);
-
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer (tty);
- if (tty->ldisc.flush_buffer)
- tty->ldisc.flush_buffer (tty);
- tty->closing = 0;
- info->event = 0;
- info->tty = 0;
-
- if (tty->ldisc.num != ldiscs[N_TTY].num) {
- if (tty->ldisc.close)
- tty->ldisc.close(tty);
- tty->ldisc = ldiscs[N_TTY];
- tty->termios->c_line = N_TTY;
- if (tty->ldisc.open)
- tty->ldisc.open(tty);
- }
- if (info->blocked_open) {
- if (info->close_delay) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(info->close_delay);
- }
- wake_up_interruptible(&info->open_wait);
- }
-
- info->flags &= ~(DZ_NORMAL_ACTIVE | DZ_CLOSING);
- wake_up_interruptible(&info->close_wait);
-
- restore_flags(flags);
-}
-
-/*
- * dz_hangup () --- called by tty_hangup() when a hangup is signaled.
- */
-static void dz_hangup (struct tty_struct *tty)
-{
- struct dz_serial *info = (struct dz_serial *) tty->driver_data;
-
- dz_flush_buffer(tty);
- shutdown(info);
- info->event = 0;
- info->count = 0;
- info->flags &= ~DZ_NORMAL_ACTIVE;
- info->tty = 0;
- wake_up_interruptible(&info->open_wait);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_open() and friends
- * ------------------------------------------------------------
- */
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct dz_serial *info)
-{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- int do_clocal = 0;
-
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (info->flags & DZ_CLOSING) {
- interruptible_sleep_on(&info->close_wait);
- return -EAGAIN;
- }
-
- /*
- * If non-blocking mode is set, or the port is not enabled, then make
- * the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- info->flags |= DZ_NORMAL_ACTIVE;
-
- return 0;
- }
-
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
-
- /*
- * Block waiting for the carrier detect and the line to become free
- * (i.e., not in use by the callout). While we are in this loop,
- * info->count is dropped by one, so that dz_close() knows when to free
- * things. We restore it upon exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&info->open_wait, &wait);
-
- info->count--;
- info->blocked_open++;
- while (1) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p (filp) || !(info->is_initialized)) {
- retval = -EAGAIN;
- break;
- }
- if (!(info->flags & DZ_CLOSING) && do_clocal)
- 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--;
-
- if (retval)
- return retval;
- info->flags |= DZ_NORMAL_ACTIVE;
- return 0;
-}
-
-/*
- * This routine is called whenever a serial port is opened. It
- * enables interrupts for a serial port. It also performs the
- * serial-specific initialization for the tty structure.
- */
-static int dz_open (struct tty_struct *tty, struct file *filp)
-{
- struct dz_serial *info;
- int retval, line;
-
- line = tty->index;
-
- /*
- * The dz lines for the mouse/keyboard must be opened using their
- * respective drivers.
- */
- if ((line < 0) || (line >= DZ_NB_PORT))
- return -ENODEV;
-
- if ((line == DZ_KEYBOARD) || (line == DZ_MOUSE))
- return -ENODEV;
-
- info = lines[line];
- info->count++;
-
- tty->driver_data = info;
- info->tty = tty;
-
- /*
- * Start up serial port
- */
- retval = startup (info);
- if (retval)
- return retval;
-
- retval = block_til_ready (tty, filp, info);
- if (retval)
- return retval;
-
- return 0;
-}
-
-static void show_serial_version (void)
-{
- printk("%s%s\n", dz_name, dz_version);
-}
-
-static struct tty_driver *serial_driver;
-
-static struct tty_operations serial_ops = {
- .open = dz_open,
- .close = dz_close,
- .write = dz_write,
- .flush_chars = dz_flush_chars,
- .write_room = dz_write_room,
- .chars_in_buffer = dz_chars_in_buffer,
- .flush_buffer = dz_flush_buffer,
- .ioctl = dz_ioctl,
- .throttle = dz_throttle,
- .unthrottle = dz_unthrottle,
- .send_xchar = dz_send_xchar,
- .set_termios = dz_set_termios,
- .stop = dz_stop,
- .start = dz_start,
- .hangup = dz_hangup,
-};
-
-int __init dz_init(void)
-{
- int i, flags;
- struct dz_serial *info;
-
- serial_driver = alloc_tty_driver(DZ_NB_PORT);
- if (!serial_driver)
- return -ENOMEM;
-
- /* Setup base handler, and timer table. */
- init_bh(SERIAL_BH, do_serial_bh);
-
- show_serial_version();
-
- serial_driver->owner = THIS_MODULE;
- serial_driver->devfs_name = "tts/";
- serial_driver->name = "ttyS";
- serial_driver->major = TTY_MAJOR;
- serial_driver->minor_start = 64;
- serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
- serial_driver->subtype = SERIAL_TYPE_NORMAL;
- serial_driver->init_termios = tty_std_termios;
- serial_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
- CLOCAL;
- serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
- tty_set_operations(serial_driver, &serial_ops);
-
- if (tty_register_driver(serial_driver))
- panic("Couldn't register serial driver\n");
-
- save_flags(flags); cli();
- for (i=0; i < DZ_NB_PORT; i++) {
- info = &multi[i];
- lines[i] = info;
- info->magic = SERIAL_MAGIC;
-
- if ((mips_machtype == MACH_DS23100) ||
- (mips_machtype == MACH_DS5100))
- info->port = (unsigned long) KN01_DZ11_BASE;
- else
- info->port = (unsigned long) KN02_DZ11_BASE;
-
- info->line = i;
- info->tty = 0;
- info->close_delay = 50;
- info->closing_wait = 3000;
- info->x_char = 0;
- info->event = 0;
- info->count = 0;
- info->blocked_open = 0;
- info->tqueue.routine = do_softint;
- info->tqueue.data = info;
- info->tqueue_hangup.routine = do_serial_hangup;
- info->tqueue_hangup.data = info;
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
-
- /*
- * If we are pointing to address zero then punt - not correctly
- * set up in setup.c to handle this.
- */
- if (! info->port)
- return 0;
-
- printk("ttyS%02d at 0x%08x (irq = %d)\n", info->line,
- info->port, SERIAL);
-
- tty_register_device(serial_driver, info->line, NULL);
- }
-
- /* Reset the chip */
-#ifndef CONFIG_SERIAL_CONSOLE
- {
- int tmp;
- dz_out(info, DZ_CSR, DZ_CLR);
- while ((tmp = dz_in(info,DZ_CSR)) & DZ_CLR);
- wbflush();
-
- /* Enable scanning */
- dz_out(info, DZ_CSR, DZ_MSE);
- }
-#endif
-
- /*
- * Order matters here... the trick is that flags is updated... in
- * request_irq - to immediatedly obliterate it is unwise.
- */
- restore_flags(flags);
-
- if (request_irq(SERIAL, dz_interrupt, SA_INTERRUPT, "DZ", lines[0]))
- panic("Unable to register DZ interrupt\n");
-
- return 0;
-}
-
-#ifdef CONFIG_SERIAL_CONSOLE
-static void dz_console_put_char (unsigned char ch)
-{
- unsigned long flags;
- int loops = 2500;
- unsigned short tmp = ch;
- /*
- * this code sends stuff out to serial device - spinning its wheels and
- * waiting.
- */
-
- /* force the issue - point it at lines[3]*/
- dz_console = &multi[CONSOLE_LINE];
-
- save_and_cli(flags);
-
- /* spin our wheels */
- while (((dz_in(dz_console, DZ_CSR) & DZ_TRDY) != DZ_TRDY) && loops--)
- ;
-
- /* Actually transmit the character. */
- dz_out(dz_console, DZ_TDR, tmp);
-
- restore_flags(flags);
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_console_print ()
- *
- * dz_console_print is registered for printk.
- * The console must be locked when we get here.
- * -------------------------------------------------------------------
- */
-static void dz_console_print (struct console *cons,
- const char *str,
- unsigned int count)
-{
-#ifdef DEBUG_DZ
- prom_printf((char *)str);
-#endif
- while (count--) {
- if (*str == '\n')
- dz_console_put_char('\r');
- dz_console_put_char(*str++);
- }
-}
-
-static struct tty_driver *dz_console_device(struct console *c, int *index)
-{
- *index = c->index;
- return serial_driver;
-}
-
-static int __init dz_console_setup(struct console *co, char *options)
-{
- int baud = 9600;
- int bits = 8;
- int parity = 'n';
- int cflag = CREAD | HUPCL | CLOCAL;
- char *s;
- unsigned short mask,tmp;
-
- if (options) {
- baud = simple_strtoul(options, NULL, 10);
- s = options;
- while (*s >= '0' && *s <= '9')
- s++;
- if (*s)
- parity = *s++;
- if (*s)
- bits = *s - '0';
- }
-
- /*
- * Now construct a cflag setting.
- */
- switch (baud) {
- case 1200:
- cflag |= DZ_B1200;
- break;
- case 2400:
- cflag |= DZ_B2400;
- break;
- case 4800:
- cflag |= DZ_B4800;
- break;
- case 9600:
- default:
- cflag |= DZ_B9600;
- break;
- }
- switch (bits) {
- case 7:
- cflag |= DZ_CS7;
- break;
- default:
- case 8:
- cflag |= DZ_CS8;
- break;
- }
- switch (parity) {
- case 'o':
- case 'O':
- cflag |= DZ_PARODD;
- break;
- case 'e':
- case 'E':
- cflag |= DZ_PARENB;
- break;
- }
- co->cflag = cflag;
-
- /* TOFIX: force to console line */
- dz_console = &multi[CONSOLE_LINE];
- if ((mips_machtype == MACH_DS23100) || (mips_machtype == MACH_DS5100))
- dz_console->port = KN01_DZ11_BASE;
- else
- dz_console->port = KN02_DZ11_BASE;
- dz_console->line = CONSOLE_LINE;
-
- dz_out(dz_console, DZ_CSR, DZ_CLR);
- while ((tmp = dz_in(dz_console,DZ_CSR)) & DZ_CLR)
- ;
-
- /* enable scanning */
- dz_out(dz_console, DZ_CSR, DZ_MSE);
-
- /* Set up flags... */
- dz_console->cflags = 0;
- dz_console->cflags |= DZ_B9600;
- dz_console->cflags |= DZ_CS8;
- dz_console->cflags |= DZ_PARENB;
- dz_out(dz_console, DZ_LPR, dz_console->cflags);
-
- mask = 1 << dz_console->line;
- tmp = dz_in (dz_console, DZ_TCR); /* read the TX flag */
- if (!(tmp & mask)) {
- tmp |= mask; /* set the TX flag */
- dz_out (dz_console, DZ_TCR, tmp);
- }
-
- return 0;
-}
-
-static struct console dz_sercons = {
- .name = "ttyS",
- .write = dz_console_print,
- .device = dz_console_device,
- .setup = dz_console_setup,
- .flags = CON_CONSDEV | CON_PRINTBUFFER,
- .index = CONSOLE_LINE,
-};
-
-void __init dz_serial_console_init(void)
-{
- register_console(&dz_sercons);
-}
-
-#endif /* ifdef CONFIG_SERIAL_CONSOLE */
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/char/dz.h b/drivers/char/dz.h
deleted file mode 100644
index 989f927a407a10520d8f9983da3e7aa8c8cb0b56..0000000000000000000000000000000000000000
--- a/drivers/char/dz.h
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- * dz.h: Serial port driver for DECStations equiped
- * with the DZ chipset.
- *
- * Copyright (C) 1998 Olivier A. D. Lebaillif
- *
- * Email: olivier.lebaillif@ifrsys.com
- *
- */
-#ifndef DZ_SERIAL_H
-#define DZ_SERIAL_H
-
-/*
- * Definitions for the Control and Status Received.
- */
-#define DZ_TRDY 0x8000 /* Transmitter empty */
-#define DZ_TIE 0x4000 /* Transmitter Interrupt Enable */
-#define DZ_RDONE 0x0080 /* Receiver data ready */
-#define DZ_RIE 0x0040 /* Receive Interrupt Enable */
-#define DZ_MSE 0x0020 /* Master Scan Enable */
-#define DZ_CLR 0x0010 /* Master reset */
-#define DZ_MAINT 0x0008 /* Loop Back Mode */
-
-/*
- * Definitions for the Received buffer.
- */
-#define DZ_RBUF_MASK 0x00FF /* Data Mask in the Receive Buffer */
-#define DZ_LINE_MASK 0x0300 /* Line Mask in the Receive Buffer */
-#define DZ_DVAL 0x8000 /* Valid Data indicator */
-#define DZ_OERR 0x4000 /* Overrun error indicator */
-#define DZ_FERR 0x2000 /* Frame error indicator */
-#define DZ_PERR 0x1000 /* Parity error indicator */
-
-#define LINE(x) (x & DZ_LINE_MASK) >> 8 /* Get the line number from the input buffer */
-#define UCHAR(x) (unsigned char)(x & DZ_RBUF_MASK)
-
-/*
- * Definitions for the Transmit Register.
- */
-#define DZ_LINE_KEYBOARD 0x0001
-#define DZ_LINE_MOUSE 0x0002
-#define DZ_LINE_MODEM 0x0004
-#define DZ_LINE_PRINTER 0x0008
-
-#define DZ_MODEM_DTR 0x0400 /* DTR for the modem line (2) */
-
-/*
- * Definitions for the Modem Status Register.
- */
-#define DZ_MODEM_DSR 0x0200 /* DSR for the modem line (2) */
-
-/*
- * Definitions for the Transmit Data Register.
- */
-#define DZ_BRK0 0x0100 /* Break assertion for line 0 */
-#define DZ_BRK1 0x0200 /* Break assertion for line 1 */
-#define DZ_BRK2 0x0400 /* Break assertion for line 2 */
-#define DZ_BRK3 0x0800 /* Break assertion for line 3 */
-
-/*
- * Definitions for the Line Parameter Register.
- */
-#define DZ_KEYBOARD 0x0000 /* line 0 = keyboard */
-#define DZ_MOUSE 0x0001 /* line 1 = mouse */
-#define DZ_MODEM 0x0002 /* line 2 = modem */
-#define DZ_PRINTER 0x0003 /* line 3 = printer */
-
-#define DZ_CSIZE 0x0018 /* Number of bits per byte (mask) */
-#define DZ_CS5 0x0000 /* 5 bits per byte */
-#define DZ_CS6 0x0008 /* 6 bits per byte */
-#define DZ_CS7 0x0010 /* 7 bits per byte */
-#define DZ_CS8 0x0018 /* 8 bits per byte */
-
-#define DZ_CSTOPB 0x0020 /* 2 stop bits instead of one */
-
-#define DZ_PARENB 0x0040 /* Parity enable */
-#define DZ_PARODD 0x0080 /* Odd parity instead of even */
-
-#define DZ_CBAUD 0x0E00 /* Baud Rate (mask) */
-#define DZ_B50 0x0000
-#define DZ_B75 0x0100
-#define DZ_B110 0x0200
-#define DZ_B134 0x0300
-#define DZ_B150 0x0400
-#define DZ_B300 0x0500
-#define DZ_B600 0x0600
-#define DZ_B1200 0x0700
-#define DZ_B1800 0x0800
-#define DZ_B2000 0x0900
-#define DZ_B2400 0x0A00
-#define DZ_B3600 0x0B00
-#define DZ_B4800 0x0C00
-#define DZ_B7200 0x0D00
-#define DZ_B9600 0x0E00
-
-#define DZ_CREAD 0x1000 /* Enable receiver */
-#define DZ_RXENAB 0x1000 /* enable receive char */
-/*
- * Addresses for the DZ registers
- */
-#define DZ_CSR 0x00 /* Control and Status Register */
-#define DZ_RBUF 0x08 /* Receive Buffer */
-#define DZ_LPR 0x08 /* Line Parameters Register */
-#define DZ_TCR 0x10 /* Transmitter Control Register */
-#define DZ_MSR 0x18 /* Modem Status Register */
-#define DZ_TDR 0x18 /* Transmit Data Register */
-
-
-#define DZ_NB_PORT 4
-
-#define DZ_XMIT_SIZE 4096 /* buffer size */
-#define WAKEUP_CHARS DZ_XMIT_SIZE/4
-
-#define DZ_EVENT_WRITE_WAKEUP 0
-
-#ifndef MIN
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-
-#define DZ_INITIALIZED 0x80000000 /* Serial port was initialized */
-#define DZ_CALLOUT_ACTIVE 0x40000000 /* Call out device is active */
-#define DZ_NORMAL_ACTIVE 0x20000000 /* Normal device is active */
-#define DZ_BOOT_AUTOCONF 0x10000000 /* Autoconfigure port on bootup */
-#define DZ_CLOSING 0x08000000 /* Serial port is closing */
-#define DZ_CTS_FLOW 0x04000000 /* Do CTS flow control */
-#define DZ_CHECK_CD 0x02000000 /* i.e., CLOCAL */
-
-#define DZ_CLOSING_WAIT_INF 0
-#define DZ_CLOSING_WAIT_NONE 65535
-
-#define DZ_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
-#define DZ_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
-#define DZ_PGRP_LOCKOUT 0x0200 /* Lock out cua opens based on pgrp */
-
-struct dz_serial {
- unsigned port; /* base address for the port */
- int type;
- int flags;
- int baud_base;
- int blocked_open;
- unsigned short close_delay;
- unsigned short closing_wait;
- unsigned short line; /* port/line number */
- unsigned short cflags; /* line configuration flag */
- unsigned short x_char; /* xon/xoff character */
- unsigned short read_status_mask; /* mask for read condition */
- unsigned short ignore_status_mask; /* mask for ignore condition */
- unsigned long event; /* mask used in BH */
- unsigned char *xmit_buf; /* Transmit buffer */
- int xmit_head; /* Position of the head */
- int xmit_tail; /* Position of the tail */
- int xmit_cnt; /* Count of the chars in the buffer */
- int count; /* indicates how many times it has been opened */
- int magic;
-
- struct async_icount icount; /* keep track of things ... */
- struct tty_struct *tty; /* tty associated */
- struct tq_struct tqueue; /* Queue for BH */
- struct tq_struct tqueue_hangup;
- wait_queue_head_t open_wait;
- wait_queue_head_t close_wait;
-
- unsigned char is_console; /* flag indicating a serial console */
- unsigned char is_initialized;
-};
-
-static struct dz_serial multi[DZ_NB_PORT]; /* Four serial lines in the DZ chip */
-static struct dz_serial *dz_console;
-
-/*
- * tmp_buf is used as a temporary buffer by serial_write. We need to
- * lock it in case the copy_from_user blocks while swapping in a page,
- * and some other program tries to do a serial write at the same time.
- * Since the lock will only come under contention when the system is
- * swapping and available memory is low, it makes sense to share one
- * buffer across all the serial ports, since it significantly saves
- * memory if large numbers of serial ports are open.
- */
-static unsigned char *tmp_buf;
-static DECLARE_MUTEX(tmp_buf_sem);
-
-static char *dz_name = "DECstation DZ serial driver version ";
-static char *dz_version = "1.02";
-
-static inline unsigned short dz_in (struct dz_serial *, unsigned);
-static inline void dz_out (struct dz_serial *, unsigned, unsigned short);
-
-static inline void dz_sched_event (struct dz_serial *, int);
-static inline void receive_chars (struct dz_serial *);
-static inline void transmit_chars (struct dz_serial *);
-static inline void check_modem_status (struct dz_serial *);
-
-static void dz_stop (struct tty_struct *);
-static void dz_start (struct tty_struct *);
-static void dz_interrupt (int, void *, struct pt_regs *);
-static void do_serial_bh (void);
-static void do_softint (void *);
-static void do_serial_hangup (void *);
-static void change_speed (struct dz_serial *);
-static void dz_flush_chars (struct tty_struct *);
-static void dz_console_print (struct console *, const char *, unsigned int);
-static void dz_flush_buffer (struct tty_struct *);
-static void dz_throttle (struct tty_struct *);
-static void dz_unthrottle (struct tty_struct *);
-static void dz_send_xchar (struct tty_struct *, char);
-static void shutdown (struct dz_serial *);
-static void send_break (struct dz_serial *, int);
-static void dz_set_termios (struct tty_struct *, struct termios *);
-static void dz_close (struct tty_struct *, struct file *);
-static void dz_hangup (struct tty_struct *);
-static void show_serial_version (void);
-
-static int dz_write (struct tty_struct *, int, const unsigned char *, int);
-static int dz_write_room (struct tty_struct *);
-static int dz_chars_in_buffer (struct tty_struct *);
-static int startup (struct dz_serial *);
-static int get_serial_info (struct dz_serial *, struct serial_struct *);
-static int set_serial_info (struct dz_serial *, struct serial_struct *);
-static int get_lsr_info (struct dz_serial *, unsigned int *);
-static int dz_ioctl (struct tty_struct *, struct file *, unsigned int, unsigned long);
-static int block_til_ready (struct tty_struct *, struct file *, struct dz_serial *);
-static int dz_open (struct tty_struct *, struct file *);
-
-#ifdef MODULE
-int init_module (void)
-void cleanup_module (void)
-#endif
-
-#endif
-
-#endif /* DZ_SERIAL_H */