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-rw-r--r--drivers/char/ser_a2232.c831
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diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c
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-/* drivers/char/ser_a2232.c */
-
-/* $Id: ser_a2232.c,v 0.4 2000/01/25 12:00:00 ehaase Exp $ */
-
-/* Linux serial driver for the Amiga A2232 board */
-
-/* This driver is MAINTAINED. Before applying any changes, please contact
- * the author.
- */
-
-/* Copyright (c) 2000-2001 Enver Haase <ehaase@inf.fu-berlin.de>
- * alias The A2232 driver project <A2232@gmx.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-/***************************** Documentation ************************/
-/*
- * This driver is in EXPERIMENTAL state. That means I could not find
- * someone with five A2232 boards with 35 ports running at 19200 bps
- * at the same time and test the machine's behaviour.
- * However, I know that you can performance-tweak this driver (see
- * the source code).
- * One thing to consider is the time this driver consumes during the
- * Amiga's vertical blank interrupt. Everything that is to be done
- * _IS DONE_ when entering the vertical blank interrupt handler of
- * this driver.
- * However, it would be more sane to only do the job for only ONE card
- * instead of ALL cards at a time; or, more generally, to handle only
- * SOME ports instead of ALL ports at a time.
- * However, as long as no-one runs into problems I guess I shouldn't
- * change the driver as it runs fine for me :) .
- *
- * Version history of this file:
- * 0.4 Resolved licensing issues.
- * 0.3 Inclusion in the Linux/m68k tree, small fixes.
- * 0.2 Added documentation, minor typo fixes.
- * 0.1 Initial release.
- *
- * TO DO:
- * - Handle incoming BREAK events. I guess "Stevens: Advanced
- * Programming in the UNIX(R) Environment" is a good reference
- * on what is to be done.
- * - When installing as a module, don't simply 'printk' text, but
- * send it to the TTY used by the user.
- *
- * THANKS TO:
- * - Jukka Marin (65EC02 code).
- * - The other NetBSD developers on whose A2232 driver I had a
- * pretty close look. However, I didn't copy any code so it
- * is okay to put my code under the GPL and include it into
- * Linux.
- */
-/***************************** End of Documentation *****************/
-
-/***************************** Defines ******************************/
-/*
- * Enables experimental 115200 (normal) 230400 (turbo) baud rate.
- * The A2232 specification states it can only operate at speeds up to
- * 19200 bits per second, and I was not able to send a file via
- * "sz"/"rz" and a null-modem cable from one A2232 port to another
- * at 115200 bits per second.
- * However, this might work for you.
- */
-#undef A2232_SPEEDHACK
-/*
- * Default is not to use RTS/CTS so you could be talked to death.
- */
-#define A2232_SUPPRESS_RTSCTS_WARNING
-/************************* End of Defines ***************************/
-
-/***************************** Includes *****************************/
-#include <linux/module.h>
-
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/tty.h>
-
-#include <asm/setup.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <linux/mutex.h>
-
-#include <linux/delay.h>
-
-#include <linux/serial.h>
-#include <linux/generic_serial.h>
-#include <linux/tty_flip.h>
-
-#include "ser_a2232.h"
-#include "ser_a2232fw.h"
-/************************* End of Includes **************************/
-
-/***************************** Prototypes ***************************/
-/* The interrupt service routine */
-static irqreturn_t a2232_vbl_inter(int irq, void *data);
-/* Initialize the port structures */
-static void a2232_init_portstructs(void);
-/* Initialize and register TTY drivers. */
-/* returns 0 IFF successful */
-static int a2232_init_drivers(void);
-
-/* BEGIN GENERIC_SERIAL PROTOTYPES */
-static void a2232_disable_tx_interrupts(void *ptr);
-static void a2232_enable_tx_interrupts(void *ptr);
-static void a2232_disable_rx_interrupts(void *ptr);
-static void a2232_enable_rx_interrupts(void *ptr);
-static int a2232_carrier_raised(struct tty_port *port);
-static void a2232_shutdown_port(void *ptr);
-static int a2232_set_real_termios(void *ptr);
-static int a2232_chars_in_buffer(void *ptr);
-static void a2232_close(void *ptr);
-static void a2232_hungup(void *ptr);
-/* static void a2232_getserial (void *ptr, struct serial_struct *sp); */
-/* END GENERIC_SERIAL PROTOTYPES */
-
-/* Functions that the TTY driver struct expects */
-static int a2232_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg);
-static void a2232_throttle(struct tty_struct *tty);
-static void a2232_unthrottle(struct tty_struct *tty);
-static int a2232_open(struct tty_struct * tty, struct file * filp);
-/************************* End of Prototypes ************************/
-
-/***************************** Global variables *********************/
-/*---------------------------------------------------------------------------
- * Interface from generic_serial.c back here
- *--------------------------------------------------------------------------*/
-static struct real_driver a2232_real_driver = {
- a2232_disable_tx_interrupts,
- a2232_enable_tx_interrupts,
- a2232_disable_rx_interrupts,
- a2232_enable_rx_interrupts,
- a2232_shutdown_port,
- a2232_set_real_termios,
- a2232_chars_in_buffer,
- a2232_close,
- a2232_hungup,
- NULL /* a2232_getserial */
-};
-
-static void *a2232_driver_ID = &a2232_driver_ID; // Some memory address WE own.
-
-/* Ports structs */
-static struct a2232_port a2232_ports[MAX_A2232_BOARDS*NUMLINES];
-
-/* TTY driver structs */
-static struct tty_driver *a2232_driver;
-
-/* nr of cards completely (all ports) and correctly configured */
-static int nr_a2232;
-
-/* zorro_dev structs for the A2232's */
-static struct zorro_dev *zd_a2232[MAX_A2232_BOARDS];
-/***************************** End of Global variables **************/
-
-/* Helper functions */
-
-static inline volatile struct a2232memory *a2232mem(unsigned int board)
-{
- return (volatile struct a2232memory *)ZTWO_VADDR(zd_a2232[board]->resource.start);
-}
-
-static inline volatile struct a2232status *a2232stat(unsigned int board,
- unsigned int portonboard)
-{
- volatile struct a2232memory *mem = a2232mem(board);
- return &(mem->Status[portonboard]);
-}
-
-static inline void a2232_receive_char(struct a2232_port *port, int ch, int err)
-{
-/* Mostly stolen from other drivers.
- Maybe one could implement a more efficient version by not only
- transferring one character at a time.
-*/
- struct tty_struct *tty = port->gs.port.tty;
-
-#if 0
- switch(err) {
- case TTY_BREAK:
- break;
- case TTY_PARITY:
- break;
- case TTY_OVERRUN:
- break;
- case TTY_FRAME:
- break;
- }
-#endif
-
- tty_insert_flip_char(tty, ch, err);
- tty_flip_buffer_push(tty);
-}
-
-/***************************** Functions ****************************/
-/*** BEGIN OF REAL_DRIVER FUNCTIONS ***/
-
-static void a2232_disable_tx_interrupts(void *ptr)
-{
- struct a2232_port *port;
- volatile struct a2232status *stat;
- unsigned long flags;
-
- port = ptr;
- stat = a2232stat(port->which_a2232, port->which_port_on_a2232);
- stat->OutDisable = -1;
-
- /* Does this here really have to be? */
- local_irq_save(flags);
- port->gs.port.flags &= ~GS_TX_INTEN;
- local_irq_restore(flags);
-}
-
-static void a2232_enable_tx_interrupts(void *ptr)
-{
- struct a2232_port *port;
- volatile struct a2232status *stat;
- unsigned long flags;
-
- port = ptr;
- stat = a2232stat(port->which_a2232, port->which_port_on_a2232);
- stat->OutDisable = 0;
-
- /* Does this here really have to be? */
- local_irq_save(flags);
- port->gs.port.flags |= GS_TX_INTEN;
- local_irq_restore(flags);
-}
-
-static void a2232_disable_rx_interrupts(void *ptr)
-{
- struct a2232_port *port;
- port = ptr;
- port->disable_rx = -1;
-}
-
-static void a2232_enable_rx_interrupts(void *ptr)
-{
- struct a2232_port *port;
- port = ptr;
- port->disable_rx = 0;
-}
-
-static int a2232_carrier_raised(struct tty_port *port)
-{
- struct a2232_port *ap = container_of(port, struct a2232_port, gs.port);
- return ap->cd_status;
-}
-
-static void a2232_shutdown_port(void *ptr)
-{
- struct a2232_port *port;
- volatile struct a2232status *stat;
- unsigned long flags;
-
- port = ptr;
- stat = a2232stat(port->which_a2232, port->which_port_on_a2232);
-
- local_irq_save(flags);
-
- port->gs.port.flags &= ~GS_ACTIVE;
-
- if (port->gs.port.tty && port->gs.port.tty->termios->c_cflag & HUPCL) {
- /* Set DTR and RTS to Low, flush output.
- The NetBSD driver "msc.c" does it this way. */
- stat->Command = ( (stat->Command & ~A2232CMD_CMask) |
- A2232CMD_Close );
- stat->OutFlush = -1;
- stat->Setup = -1;
- }
-
- local_irq_restore(flags);
-
- /* After analyzing control flow, I think a2232_shutdown_port
- is actually the last call from the system when at application
- level someone issues a "echo Hello >>/dev/ttyY0".
- Therefore I think the MOD_DEC_USE_COUNT should be here and
- not in "a2232_close()". See the comment in "sx.c", too.
- If you run into problems, compile this driver into the
- kernel instead of compiling it as a module. */
-}
-
-static int a2232_set_real_termios(void *ptr)
-{
- unsigned int cflag, baud, chsize, stopb, parity, softflow;
- int rate;
- int a2232_param, a2232_cmd;
- unsigned long flags;
- unsigned int i;
- struct a2232_port *port = ptr;
- volatile struct a2232status *status;
- volatile struct a2232memory *mem;
-
- if (!port->gs.port.tty || !port->gs.port.tty->termios) return 0;
-
- status = a2232stat(port->which_a2232, port->which_port_on_a2232);
- mem = a2232mem(port->which_a2232);
-
- a2232_param = a2232_cmd = 0;
-
- // get baud rate
- baud = port->gs.baud;
- if (baud == 0) {
- /* speed == 0 -> drop DTR, do nothing else */
- local_irq_save(flags);
- // Clear DTR (and RTS... mhhh).
- status->Command = ( (status->Command & ~A2232CMD_CMask) |
- A2232CMD_Close );
- status->OutFlush = -1;
- status->Setup = -1;
-
- local_irq_restore(flags);
- return 0;
- }
-
- rate = A2232_BAUD_TABLE_NOAVAIL;
- for (i=0; i < A2232_BAUD_TABLE_NUM_RATES * 3; i += 3){
- if (a2232_baud_table[i] == baud){
- if (mem->Common.Crystal == A2232_TURBO) rate = a2232_baud_table[i+2];
- else rate = a2232_baud_table[i+1];
- }
- }
- if (rate == A2232_BAUD_TABLE_NOAVAIL){
- printk("a2232: Board %d Port %d unsupported baud rate: %d baud. Using another.\n",port->which_a2232,port->which_port_on_a2232,baud);
- // This is useful for both (turbo or normal) Crystal versions.
- rate = A2232PARAM_B9600;
- }
- a2232_param |= rate;
-
- cflag = port->gs.port.tty->termios->c_cflag;
-
- // get character size
- chsize = cflag & CSIZE;
- switch (chsize){
- case CS8: a2232_param |= A2232PARAM_8Bit; break;
- case CS7: a2232_param |= A2232PARAM_7Bit; break;
- case CS6: a2232_param |= A2232PARAM_6Bit; break;
- case CS5: a2232_param |= A2232PARAM_5Bit; break;
- default: printk("a2232: Board %d Port %d unsupported character size: %d. Using 8 data bits.\n",
- port->which_a2232,port->which_port_on_a2232,chsize);
- a2232_param |= A2232PARAM_8Bit; break;
- }
-
- // get number of stop bits
- stopb = cflag & CSTOPB;
- if (stopb){ // two stop bits instead of one
- printk("a2232: Board %d Port %d 2 stop bits unsupported. Using 1 stop bit.\n",
- port->which_a2232,port->which_port_on_a2232);
- }
-
- // Warn if RTS/CTS not wanted
- if (!(cflag & CRTSCTS)){
-#ifndef A2232_SUPPRESS_RTSCTS_WARNING
- printk("a2232: Board %d Port %d cannot switch off firmware-implemented RTS/CTS hardware flow control.\n",
- port->which_a2232,port->which_port_on_a2232);
-#endif
- }
-
- /* I think this is correct.
- However, IXOFF means _input_ flow control and I wonder
- if one should care about IXON _output_ flow control,
- too. If this makes problems, one should turn the A2232
- firmware XON/XOFF "SoftFlow" flow control off and use
- the conventional way of inserting START/STOP characters
- by hand in throttle()/unthrottle().
- */
- softflow = !!( port->gs.port.tty->termios->c_iflag & IXOFF );
-
- // get Parity (Enabled/Disabled? If Enabled, Odd or Even?)
- parity = cflag & (PARENB | PARODD);
- if (parity & PARENB){
- if (parity & PARODD){
- a2232_cmd |= A2232CMD_OddParity;
- }
- else{
- a2232_cmd |= A2232CMD_EvenParity;
- }
- }
- else a2232_cmd |= A2232CMD_NoParity;
-
-
- /* Hmm. Maybe an own a2232_port structure
- member would be cleaner? */
- if (cflag & CLOCAL)
- port->gs.port.flags &= ~ASYNC_CHECK_CD;
- else
- port->gs.port.flags |= ASYNC_CHECK_CD;
-
-
- /* Now we have all parameters and can go to set them: */
- local_irq_save(flags);
-
- status->Param = a2232_param | A2232PARAM_RcvBaud;
- status->Command = a2232_cmd | A2232CMD_Open | A2232CMD_Enable;
- status->SoftFlow = softflow;
- status->OutDisable = 0;
- status->Setup = -1;
-
- local_irq_restore(flags);
- return 0;
-}
-
-static int a2232_chars_in_buffer(void *ptr)
-{
- struct a2232_port *port;
- volatile struct a2232status *status;
- unsigned char ret; /* we need modulo-256 arithmetics */
- port = ptr;
- status = a2232stat(port->which_a2232, port->which_port_on_a2232);
-#if A2232_IOBUFLEN != 256
-#error "Re-Implement a2232_chars_in_buffer()!"
-#endif
- ret = (status->OutHead - status->OutTail);
- return ret;
-}
-
-static void a2232_close(void *ptr)
-{
- a2232_disable_tx_interrupts(ptr);
- a2232_disable_rx_interrupts(ptr);
- /* see the comment in a2232_shutdown_port above. */
-}
-
-static void a2232_hungup(void *ptr)
-{
- a2232_close(ptr);
-}
-/*** END OF REAL_DRIVER FUNCTIONS ***/
-
-/*** BEGIN FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/
-static int a2232_ioctl( struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
-{
- return -ENOIOCTLCMD;
-}
-
-static void a2232_throttle(struct tty_struct *tty)
-{
-/* Throttle: System cannot take another chars: Drop RTS or
- send the STOP char or whatever.
- The A2232 firmware does RTS/CTS anyway, and XON/XOFF
- if switched on. So the only thing we can do at this
- layer here is not taking any characters out of the
- A2232 buffer any more. */
- struct a2232_port *port = tty->driver_data;
- port->throttle_input = -1;
-}
-
-static void a2232_unthrottle(struct tty_struct *tty)
-{
-/* Unthrottle: dual to "throttle()" above. */
- struct a2232_port *port = tty->driver_data;
- port->throttle_input = 0;
-}
-
-static int a2232_open(struct tty_struct * tty, struct file * filp)
-{
-/* More or less stolen from other drivers. */
- int line;
- int retval;
- struct a2232_port *port;
-
- line = tty->index;
- port = &a2232_ports[line];
-
- tty->driver_data = port;
- port->gs.port.tty = tty;
- port->gs.port.count++;
- retval = gs_init_port(&port->gs);
- if (retval) {
- port->gs.port.count--;
- return retval;
- }
- port->gs.port.flags |= GS_ACTIVE;
- retval = gs_block_til_ready(port, filp);
-
- if (retval) {
- port->gs.port.count--;
- return retval;
- }
-
- a2232_enable_rx_interrupts(port);
-
- return 0;
-}
-/*** END OF FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/
-
-static irqreturn_t a2232_vbl_inter(int irq, void *data)
-{
-#if A2232_IOBUFLEN != 256
-#error "Re-Implement a2232_vbl_inter()!"
-#endif
-
-struct a2232_port *port;
-volatile struct a2232memory *mem;
-volatile struct a2232status *status;
-unsigned char newhead;
-unsigned char bufpos; /* Must be unsigned char. We need the modulo-256 arithmetics */
-unsigned char ncd, ocd, ccd; /* names consistent with the NetBSD driver */
-volatile u_char *ibuf, *cbuf, *obuf;
-int ch, err, n, p;
- for (n = 0; n < nr_a2232; n++){ /* for every completely initialized A2232 board */
- mem = a2232mem(n);
- for (p = 0; p < NUMLINES; p++){ /* for every port on this board */
- err = 0;
- port = &a2232_ports[n*NUMLINES+p];
- if ( port->gs.port.flags & GS_ACTIVE ){ /* if the port is used */
-
- status = a2232stat(n,p);
-
- if (!port->disable_rx && !port->throttle_input){ /* If input is not disabled */
- newhead = status->InHead; /* 65EC02 write pointer */
- bufpos = status->InTail;
-
- /* check for input for this port */
- if (newhead != bufpos) {
- /* buffer for input chars/events */
- ibuf = mem->InBuf[p];
-
- /* data types of bytes in ibuf */
- cbuf = mem->InCtl[p];
-
- /* do for all chars */
- while (bufpos != newhead) {
- /* which type of input data? */
- switch (cbuf[bufpos]) {
- /* switch on input event (CD, BREAK, etc.) */
- case A2232INCTL_EVENT:
- switch (ibuf[bufpos++]) {
- case A2232EVENT_Break:
- /* TODO: Handle BREAK signal */
- break;
- /* A2232EVENT_CarrierOn and A2232EVENT_CarrierOff are
- handled in a separate queue and should not occur here. */
- case A2232EVENT_Sync:
- printk("A2232: 65EC02 software sent SYNC event, don't know what to do. Ignoring.");
- break;
- default:
- printk("A2232: 65EC02 software broken, unknown event type %d occurred.\n",ibuf[bufpos-1]);
- } /* event type switch */
- break;
- case A2232INCTL_CHAR:
- /* Receive incoming char */
- a2232_receive_char(port, ibuf[bufpos], err);
- bufpos++;
- break;
- default:
- printk("A2232: 65EC02 software broken, unknown data type %d occurred.\n",cbuf[bufpos]);
- bufpos++;
- } /* switch on input data type */
- } /* while there's something in the buffer */
-
- status->InTail = bufpos; /* tell 65EC02 what we've read */
-
- } /* if there was something in the buffer */
- } /* If input is not disabled */
-
- /* Now check if there's something to output */
- obuf = mem->OutBuf[p];
- bufpos = status->OutHead;
- while ( (port->gs.xmit_cnt > 0) &&
- (!port->gs.port.tty->stopped) &&
- (!port->gs.port.tty->hw_stopped) ){ /* While there are chars to transmit */
- if (((bufpos+1) & A2232_IOBUFLENMASK) != status->OutTail) { /* If the A2232 buffer is not full */
- ch = port->gs.xmit_buf[port->gs.xmit_tail]; /* get the next char to transmit */
- port->gs.xmit_tail = (port->gs.xmit_tail+1) & (SERIAL_XMIT_SIZE-1); /* modulo-addition for the gs.xmit_buf ring-buffer */
- obuf[bufpos++] = ch; /* put it into the A2232 buffer */
- port->gs.xmit_cnt--;
- }
- else{ /* If A2232 the buffer is full */
- break; /* simply stop filling it. */
- }
- }
- status->OutHead = bufpos;
-
- /* WakeUp if output buffer runs low */
- if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.port.tty) {
- tty_wakeup(port->gs.port.tty);
- }
- } // if the port is used
- } // for every port on the board
-
- /* Now check the CD message queue */
- newhead = mem->Common.CDHead;
- bufpos = mem->Common.CDTail;
- if (newhead != bufpos){ /* There are CD events in queue */
- ocd = mem->Common.CDStatus; /* get old status bits */
- while (newhead != bufpos){ /* read all events */
- ncd = mem->CDBuf[bufpos++]; /* get one event */
- ccd = ncd ^ ocd; /* mask of changed lines */
- ocd = ncd; /* save new status bits */
- for(p=0; p < NUMLINES; p++){ /* for all ports */
- if (ccd & 1){ /* this one changed */
-
- struct a2232_port *port = &a2232_ports[n*7+p];
- port->cd_status = !(ncd & 1); /* ncd&1 <=> CD is now off */
-
- if (!(port->gs.port.flags & ASYNC_CHECK_CD))
- ; /* Don't report DCD changes */
- else if (port->cd_status) { // if DCD on: DCD went UP!
-
- /* Are we blocking in open?*/
- wake_up_interruptible(&port->gs.port.open_wait);
- }
- else { // if DCD off: DCD went DOWN!
- if (port->gs.port.tty)
- tty_hangup (port->gs.port.tty);
- }
-
- } // if CD changed for this port
- ccd >>= 1;
- ncd >>= 1; /* Shift bits for next line */
- } // for every port
- } // while CD events in queue
- mem->Common.CDStatus = ocd; /* save new status */
- mem->Common.CDTail = bufpos; /* remove events */
- } // if events in CD queue
-
- } // for every completely initialized A2232 board
- return IRQ_HANDLED;
-}
-
-static const struct tty_port_operations a2232_port_ops = {
- .carrier_raised = a2232_carrier_raised,
-};
-
-static void a2232_init_portstructs(void)
-{
- struct a2232_port *port;
- int i;
-
- for (i = 0; i < MAX_A2232_BOARDS*NUMLINES; i++) {
- port = a2232_ports + i;
- tty_port_init(&port->gs.port);
- port->gs.port.ops = &a2232_port_ops;
- port->which_a2232 = i/NUMLINES;
- port->which_port_on_a2232 = i%NUMLINES;
- port->disable_rx = port->throttle_input = port->cd_status = 0;
- port->gs.magic = A2232_MAGIC;
- port->gs.close_delay = HZ/2;
- port->gs.closing_wait = 30 * HZ;
- port->gs.rd = &a2232_real_driver;
- }
-}
-
-static const struct tty_operations a2232_ops = {
- .open = a2232_open,
- .close = gs_close,
- .write = gs_write,
- .put_char = gs_put_char,
- .flush_chars = gs_flush_chars,
- .write_room = gs_write_room,
- .chars_in_buffer = gs_chars_in_buffer,
- .flush_buffer = gs_flush_buffer,
- .ioctl = a2232_ioctl,
- .throttle = a2232_throttle,
- .unthrottle = a2232_unthrottle,
- .set_termios = gs_set_termios,
- .stop = gs_stop,
- .start = gs_start,
- .hangup = gs_hangup,
-};
-
-static int a2232_init_drivers(void)
-{
- int error;
-
- a2232_driver = alloc_tty_driver(NUMLINES * nr_a2232);
- if (!a2232_driver)
- return -ENOMEM;
- a2232_driver->owner = THIS_MODULE;
- a2232_driver->driver_name = "commodore_a2232";
- a2232_driver->name = "ttyY";
- a2232_driver->major = A2232_NORMAL_MAJOR;
- a2232_driver->type = TTY_DRIVER_TYPE_SERIAL;
- a2232_driver->subtype = SERIAL_TYPE_NORMAL;
- a2232_driver->init_termios = tty_std_termios;
- a2232_driver->init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- a2232_driver->init_termios.c_ispeed = 9600;
- a2232_driver->init_termios.c_ospeed = 9600;
- a2232_driver->flags = TTY_DRIVER_REAL_RAW;
- tty_set_operations(a2232_driver, &a2232_ops);
- if ((error = tty_register_driver(a2232_driver))) {
- printk(KERN_ERR "A2232: Couldn't register A2232 driver, error = %d\n",
- error);
- put_tty_driver(a2232_driver);
- return 1;
- }
- return 0;
-}
-
-static int __init a2232board_init(void)
-{
- struct zorro_dev *z;
-
- unsigned int boardaddr;
- int bcount;
- short start;
- u_char *from;
- volatile u_char *to;
- volatile struct a2232memory *mem;
- int error, i;
-
-#ifdef CONFIG_SMP
- return -ENODEV; /* This driver is not SMP aware. Is there an SMP ZorroII-bus-machine? */
-#endif
-
- if (!MACH_IS_AMIGA){
- return -ENODEV;
- }
-
- printk("Commodore A2232 driver initializing.\n"); /* Say that we're alive. */
-
- z = NULL;
- nr_a2232 = 0;
- while ( (z = zorro_find_device(ZORRO_WILDCARD, z)) ){
- if ( (z->id != ZORRO_PROD_CBM_A2232_PROTOTYPE) &&
- (z->id != ZORRO_PROD_CBM_A2232) ){
- continue; // The board found was no A2232
- }
- if (!zorro_request_device(z,"A2232 driver"))
- continue;
-
- printk("Commodore A2232 found (#%d).\n",nr_a2232);
-
- zd_a2232[nr_a2232] = z;
-
- boardaddr = ZTWO_VADDR( z->resource.start );
- printk("Board is located at address 0x%x, size is 0x%x.\n", boardaddr, (unsigned int) ((z->resource.end+1) - (z->resource.start)));
-
- mem = (volatile struct a2232memory *) boardaddr;
-
- (void) mem->Enable6502Reset; /* copy the code across to the board */
- to = (u_char *)mem; from = a2232_65EC02code; bcount = sizeof(a2232_65EC02code) - 2;
- start = *(short *)from;
- from += sizeof(start);
- to += start;
- while(bcount--) *to++ = *from++;
- printk("65EC02 software uploaded to the A2232 memory.\n");
-
- mem->Common.Crystal = A2232_UNKNOWN; /* use automatic speed check */
-
- /* start 6502 running */
- (void) mem->ResetBoard;
- printk("A2232's 65EC02 CPU up and running.\n");
-
- /* wait until speed detector has finished */
- for (bcount = 0; bcount < 2000; bcount++) {
- udelay(1000);
- if (mem->Common.Crystal)
- break;
- }
- printk((mem->Common.Crystal?"A2232 oscillator crystal detected by 65EC02 software: ":"65EC02 software could not determine A2232 oscillator crystal: "));
- switch (mem->Common.Crystal){
- case A2232_UNKNOWN:
- printk("Unknown crystal.\n");
- break;
- case A2232_NORMAL:
- printk ("Normal crystal.\n");
- break;
- case A2232_TURBO:
- printk ("Turbo crystal.\n");
- break;
- default:
- printk ("0x%x. Huh?\n",mem->Common.Crystal);
- }
-
- nr_a2232++;
-
- }
-
- printk("Total: %d A2232 boards initialized.\n", nr_a2232); /* Some status report if no card was found */
-
- a2232_init_portstructs();
-
- /*
- a2232_init_drivers also registers the drivers. Must be here because all boards
- have to be detected first.
- */
- if (a2232_init_drivers()) return -ENODEV; // maybe we should use a different -Exxx?
-
- error = request_irq(IRQ_AMIGA_VERTB, a2232_vbl_inter, 0,
- "A2232 serial VBL", a2232_driver_ID);
- if (error) {
- for (i = 0; i < nr_a2232; i++)
- zorro_release_device(zd_a2232[i]);
- tty_unregister_driver(a2232_driver);
- put_tty_driver(a2232_driver);
- }
- return error;
-}
-
-static void __exit a2232board_exit(void)
-{
- int i;
-
- for (i = 0; i < nr_a2232; i++) {
- zorro_release_device(zd_a2232[i]);
- }
-
- tty_unregister_driver(a2232_driver);
- put_tty_driver(a2232_driver);
- free_irq(IRQ_AMIGA_VERTB, a2232_driver_ID);
-}
-
-module_init(a2232board_init);
-module_exit(a2232board_exit);
-
-MODULE_AUTHOR("Enver Haase");
-MODULE_DESCRIPTION("Amiga A2232 multi-serial board driver");
-MODULE_LICENSE("GPL");