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/* $Id: aurora.c,v 1.18.2.1 2002/02/04 22:37:43 davem Exp $
* linux/drivers/sbus/char/aurora.c -- Aurora multiport driver
*
* Copyright (c) 1999 by Oliver Aldulea (oli at bv dot ro)
*
* This code is based on the RISCom/8 multiport serial driver written
* by Dmitry Gorodchanin (pgmdsg@ibi.com), based on the Linux serial
* driver, written by Linus Torvalds, Theodore T'so and others.
* The Aurora multiport programming info was obtained mainly from the
* Cirrus Logic CD180 documentation (available on the web), and by
* doing heavy tests on the board. Many thanks to Eddie C. Dost for the
* help on the sbus interface.
*
* 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.
*
* Revision 1.0
*
* This is the first public release.
*
* Most of the information you need is in the aurora.h file. Please
* read that file before reading this one.
*
* Several parts of the code do not have comments yet.
*
* n.b. The board can support 115.2 bit rates, but only on a few
* ports. The total badwidth of one chip (ports 0-7 or 8-15) is equal
* to OSC_FREQ div 16. In case of my board, each chip can take 6
* channels of 115.2 kbaud. This information is not well-tested.
*
* Fixed to use tty_get_baud_rate().
* Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/sched.h>
#ifdef AURORA_INT_DEBUG
#include <linux/timer.h>
#endif
#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/mm.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/tqueue.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/oplib.h>
#include <asm/system.h>
#include <asm/segment.h>
#include <asm/bitops.h>
#include <asm/kdebug.h>
#include <asm/sbus.h>
#include <asm/uaccess.h>
#include "aurora.h"
#include "cd180.h"
unsigned char irqs[4] = {
0, 0, 0, 0
};
#ifdef AURORA_INT_DEBUG
int irqhit=0;
#endif
#ifndef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
#define AURORA_TYPE_NORMAL 1
static struct tty_driver aurora_driver;
static struct Aurora_board aurora_board[AURORA_NBOARD] = {
{0,},
};
static struct Aurora_port aurora_port[AURORA_TNPORTS] = {
{ 0, },
};
/* no longer used. static struct Aurora_board * IRQ_to_board[16] = { NULL, } ;*/
static unsigned char * tmp_buf = NULL;
static DECLARE_MUTEX(tmp_buf_sem);
static int aurora_refcount = 0;
static struct tty_struct * aurora_table[AURORA_TNPORTS] = { NULL, };
static struct termios * aurora_termios[AURORA_TNPORTS] = { NULL, };
static struct termios * aurora_termios_locked[AURORA_TNPORTS] = { NULL, };
DECLARE_TASK_QUEUE(tq_aurora);
static inline int aurora_paranoia_check(struct Aurora_port const * port,
kdev_t device, const char *routine)
{
#ifdef AURORA_PARANOIA_CHECK
static const char *badmagic =
KERN_DEBUG "aurora: Warning: bad aurora port magic number for device %s in %s\n";
static const char *badinfo =
KERN_DEBUG "aurora: Warning: null aurora port for device %s in %s\n";
if (!port) {
printk(badinfo, kdevname(device), routine);
return 1;
}
if (port->magic != AURORA_MAGIC) {
printk(badmagic, kdevname(device), routine);
return 1;
}
#endif
return 0;
}
/*
*
* Service functions for aurora driver.
*
*/
/* Get board number from pointer */
extern inline int board_No (struct Aurora_board const * bp)
{
return bp - aurora_board;
}
/* Get port number from pointer */
extern inline int port_No (struct Aurora_port const * port)
{
return AURORA_PORT(port - aurora_port);
}
/* Get pointer to board from pointer to port */
extern inline struct Aurora_board * port_Board(struct Aurora_port const * port)
{
return &aurora_board[AURORA_BOARD(port - aurora_port)];
}
/* Wait for Channel Command Register ready */
extern inline void aurora_wait_CCR(struct aurora_reg128 * r)
{
unsigned long delay;
#ifdef AURORA_DEBUG
printk("aurora_wait_CCR\n");
#endif
/* FIXME: need something more descriptive than 100000 :) */
for (delay = 100000; delay; delay--)
if (!sbus_readb(&r->r[CD180_CCR]))
return;
printk(KERN_DEBUG "aurora: Timeout waiting for CCR.\n");
}
/*
* aurora probe functions.
*/
/* Must be called with enabled interrupts */
extern inline void aurora_long_delay(unsigned long delay)
{
unsigned long i;
#ifdef AURORA_DEBUG
printk("aurora_long_delay: start\n");
#endif
for (i = jiffies + delay; time_before(jiffies, i); ) ;
#ifdef AURORA_DEBUG
printk("aurora_long_delay: end\n");
#endif
}
/* Reset and setup CD180 chip */
static int aurora_init_CD180(struct Aurora_board * bp, int chip)
{
unsigned long flags;
int id;
#ifdef AURORA_DEBUG
printk("aurora_init_CD180: start %d:%d\n",
board_No(bp), chip);
#endif
save_flags(flags); cli();
sbus_writeb(0, &bp->r[chip]->r[CD180_CAR]);
sbus_writeb(0, &bp->r[chip]->r[CD180_GSVR]);
/* Wait for CCR ready */
aurora_wait_CCR(bp->r[chip]);
/* Reset CD180 chip */
sbus_writeb(CCR_HARDRESET, &bp->r[chip]->r[CD180_CCR]);
udelay(1);
sti();
id=1000;
while((--id) &&
(sbus_readb(&bp->r[chip]->r[CD180_GSVR])!=0xff))udelay(100);
if(!id) {
printk(KERN_ERR "aurora%d: Chip %d failed init.\n",
board_No(bp), chip);
restore_flags(flags);
return(-1);
}
cli();
sbus_writeb((board_No(bp)<<5)|((chip+1)<<3),
&bp->r[chip]->r[CD180_GSVR]); /* Set ID for this chip */
sbus_writeb(0x80|bp->ACK_MINT,
&bp->r[chip]->r[CD180_MSMR]); /* Prio for modem intr */
sbus_writeb(0x80|bp->ACK_TINT,
&bp->r[chip]->r[CD180_TSMR]); /* Prio for transmitter intr */
sbus_writeb(0x80|bp->ACK_RINT,
&bp->r[chip]->r[CD180_RSMR]); /* Prio for receiver intr */
/* Setting up prescaler. We need 4 tick per 1 ms */
sbus_writeb((bp->oscfreq/(1000000/AURORA_TPS)) >> 8,
&bp->r[chip]->r[CD180_PPRH]);
sbus_writeb((bp->oscfreq/(1000000/AURORA_TPS)) & 0xff,
&bp->r[chip]->r[CD180_PPRL]);
sbus_writeb(SRCR_AUTOPRI|SRCR_GLOBPRI,
&bp->r[chip]->r[CD180_SRCR]);
id = sbus_readb(&bp->r[chip]->r[CD180_GFRCR]);
printk(KERN_INFO "aurora%d: Chip %d id %02x: ",
board_No(bp), chip,id);
if(sbus_readb(&bp->r[chip]->r[CD180_SRCR]) & 128) {
switch (id) {
case 0x82:printk("CL-CD1864 rev A\n");break;
case 0x83:printk("CL-CD1865 rev A\n");break;
case 0x84:printk("CL-CD1865 rev B\n");break;
case 0x85:printk("CL-CD1865 rev C\n");break;
default:printk("Unknown.\n");
};
} else {
switch (id) {
case 0x81:printk("CL-CD180 rev B\n");break;
case 0x82:printk("CL-CD180 rev C\n");break;
default:printk("Unknown.\n");
};
}
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_init_CD180: end\n");
#endif
return 0;
}
static int valid_irq(unsigned char irq)
{
int i;
for(i=0;i<TYPE_1_IRQS;i++)
if (type_1_irq[i]==irq) return 1;
return 0;
}
static void aurora_interrupt(int irq, void * dev_id, struct pt_regs * regs);
/* Main probing routine, also sets irq. */
static int aurora_probe(void)
{
struct sbus_bus *sbus;
struct sbus_dev *sdev;
int grrr;
char buf[30];
int bn = 0;
struct Aurora_board *bp;
for_each_sbus(sbus) {
for_each_sbusdev(sdev, sbus) {
/* printk("Try: %x %s\n",sdev,sdev->prom_name);*/
if (!strcmp(sdev->prom_name, "sio16")) {
#ifdef AURORA_DEBUG
printk(KERN_INFO "aurora: sio16 at %p\n",sdev);
#endif
if((sdev->reg_addrs[0].reg_size!=1) &&
(sdev->reg_addrs[1].reg_size!=128) &&
(sdev->reg_addrs[2].reg_size!=128) &&
(sdev->reg_addrs[3].reg_size!=4)) {
printk(KERN_ERR "aurora%d: registers' sizes "
"do not match.\n", bn);
break;
}
bp = &aurora_board[bn];
bp->r0 = (struct aurora_reg1 *)
sbus_ioremap(&sdev->resource[0], 0,
sdev->reg_addrs[0].reg_size,
"sio16");
if (bp->r0 == NULL) {
printk(KERN_ERR "aurora%d: can't map "
"reg_addrs[0]\n", bn);
break;
}
#ifdef AURORA_DEBUG
printk("Map reg 0: %p\n", bp->r0);
#endif
bp->r[0] = (struct aurora_reg128 *)
sbus_ioremap(&sdev->resource[1], 0,
sdev->reg_addrs[1].reg_size,
"sio16");
if (bp->r[0] == NULL) {
printk(KERN_ERR "aurora%d: can't map "
"reg_addrs[1]\n", bn);
break;
}
#ifdef AURORA_DEBUG
printk("Map reg 1: %p\n", bp->r[0]);
#endif
bp->r[1] = (struct aurora_reg128 *)
sbus_ioremap(&sdev->resource[2], 0,
sdev->reg_addrs[2].reg_size,
"sio16");
if (bp->r[1] == NULL) {
printk(KERN_ERR "aurora%d: can't map "
"reg_addrs[2]\n", bn);
break;
}
#ifdef AURORA_DEBUG
printk("Map reg 2: %p\n", bp->r[1]);
#endif
bp->r3 = (struct aurora_reg4 *)
sbus_ioremap(&sdev->resource[3], 0,
sdev->reg_addrs[3].reg_size,
"sio16");
if (bp->r3 == NULL) {
printk(KERN_ERR "aurora%d: can't map "
"reg_addrs[3]\n", bn);
break;
}
#ifdef AURORA_DEBUG
printk("Map reg 3: %p\n", bp->r3);
#endif
/* Variables setup */
bp->flags = 0;
#ifdef AURORA_DEBUG
grrr=prom_getint(sdev->prom_node,"intr");
printk("intr pri %d\n", grrr);
#endif
if ((bp->irq=irqs[bn]) && valid_irq(bp->irq) &&
!request_irq(bp->irq|0x30, aurora_interrupt, SA_SHIRQ, "sio16", bp)) {
free_irq(bp->irq|0x30, bp);
} else
if ((bp->irq=prom_getint(sdev->prom_node, "bintr")) && valid_irq(bp->irq) &&
!request_irq(bp->irq|0x30, aurora_interrupt, SA_SHIRQ, "sio16", bp)) {
free_irq(bp->irq|0x30, bp);
} else
if ((bp->irq=prom_getint(sdev->prom_node, "intr")) && valid_irq(bp->irq) &&
!request_irq(bp->irq|0x30, aurora_interrupt, SA_SHIRQ, "sio16", bp)) {
free_irq(bp->irq|0x30, bp);
} else
for(grrr=0;grrr<TYPE_1_IRQS;grrr++) {
if ((bp->irq=type_1_irq[grrr])&&!request_irq(bp->irq|0x30, aurora_interrupt, SA_SHIRQ, "sio16", bp)) {
free_irq(bp->irq|0x30, bp);
break;
} else {
printk(KERN_ERR "aurora%d: Could not get an irq for this board !!!\n",bn);
bp->flags=0xff;
}
}
if(bp->flags==0xff)break;
printk(KERN_INFO "aurora%d: irq %d\n",bn,bp->irq&0x0f);
buf[0]=0;
grrr=prom_getproperty(sdev->prom_node,"dtr_rts",buf,sizeof(buf));
if(!strcmp(buf,"swapped")){
printk(KERN_INFO "aurora%d: Swapped DTR and RTS\n",bn);
bp->DTR=MSVR_RTS;
bp->RTS=MSVR_DTR;
bp->MSVDTR=CD180_MSVRTS;
bp->MSVRTS=CD180_MSVDTR;
bp->flags|=AURORA_BOARD_DTR_FLOW_OK;
}else{
#ifdef AURORA_FORCE_DTR_FLOW
printk(KERN_INFO "aurora%d: Forcing swapped DTR-RTS\n",bn);
bp->DTR=MSVR_RTS;
bp->RTS=MSVR_DTR;
bp->MSVDTR=CD180_MSVRTS;
bp->MSVRTS=CD180_MSVDTR;
bp->flags|=AURORA_BOARD_DTR_FLOW_OK;
#else
printk(KERN_INFO "aurora%d: Normal DTR and RTS\n",bn);
bp->DTR=MSVR_DTR;
bp->RTS=MSVR_RTS;
bp->MSVDTR=CD180_MSVDTR;
bp->MSVRTS=CD180_MSVRTS;
#endif
}
bp->oscfreq=prom_getint(sdev->prom_node,"clk")*100;
printk(KERN_INFO "aurora%d: Oscillator: %d Hz\n",bn,bp->oscfreq);
grrr=prom_getproperty(sdev->prom_node,"chip",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Chips: %s\n",bn,buf);
grrr=prom_getproperty(sdev->prom_node,"manu",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Manufacturer: %s\n",bn,buf);
grrr=prom_getproperty(sdev->prom_node,"model",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Model: %s\n",bn,buf);
grrr=prom_getproperty(sdev->prom_node,"rev",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Revision: %s\n",bn,buf);
grrr=prom_getproperty(sdev->prom_node,"mode",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Mode: %s\n",bn,buf);
#ifdef MODULE
bp->count=0;
#endif
bp->flags = AURORA_BOARD_PRESENT;
/* hardware ack */
bp->ACK_MINT=1;
bp->ACK_TINT=2;
bp->ACK_RINT=3;
bn++;
}
}
}
return bn;
}
static void aurora_release_io_range(struct Aurora_board *bp)
{
sbus_iounmap((unsigned long)bp->r0, 1);
sbus_iounmap((unsigned long)bp->r[0], 128);
sbus_iounmap((unsigned long)bp->r[1], 128);
sbus_iounmap((unsigned long)bp->r3, 4);
}
extern inline void aurora_mark_event(struct Aurora_port * port, int event)
{
#ifdef AURORA_DEBUG
printk("aurora_mark_event: start\n");
#endif
set_bit(event, &port->event);
queue_task(&port->tqueue, &tq_aurora);
mark_bh(AURORA_BH);
#ifdef AURORA_DEBUG
printk("aurora_mark_event: end\n");
#endif
}
static __inline__ struct Aurora_port * aurora_get_port(struct Aurora_board const * bp,
int chip,
unsigned char const *what)
{
unsigned char channel;
struct Aurora_port * port;
channel = ((chip << 3) |
((sbus_readb(&bp->r[chip]->r[CD180_GSCR]) & GSCR_CHAN) >> GSCR_CHAN_OFF));
port = &aurora_port[board_No(bp) * AURORA_NPORT * AURORA_NCD180 + channel];
if (port->flags & ASYNC_INITIALIZED)
return port;
printk(KERN_DEBUG "aurora%d: %s interrupt from invalid port %d\n",
board_No(bp), what, channel);
return NULL;
}
static void aurora_receive_exc(struct Aurora_board const * bp, int chip)
{
struct Aurora_port *port;
struct tty_struct *tty;
unsigned char status;
unsigned char ch;
if (!(port = aurora_get_port(bp, chip, "Receive_x")))
return;
tty = port->tty;
if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
#ifdef AURORA_INTNORM
printk("aurora%d: port %d: Working around flip buffer overflow.\n",
board_No(bp), port_No(port));
#endif
return;
}
#ifdef AURORA_REPORT_OVERRUN
status = sbus_readb(&bp->r[chip]->r[CD180_RCSR]);
if (status & RCSR_OE) {
port->overrun++;
#if 1
printk("aurora%d: port %d: Overrun. Total %ld overruns.\n",
board_No(bp), port_No(port), port->overrun);
#endif
}
status &= port->mark_mask;
#else
status = sbus_readb(&bp->r[chip]->r[CD180_RCSR]) & port->mark_mask;
#endif
ch = sbus_readb(&bp->r[chip]->r[CD180_RDR]);
if (!status)
return;
if (status & RCSR_TOUT) {
/* printk("aurora%d: port %d: Receiver timeout. Hardware problems ?\n",
board_No(bp), port_No(port));*/
return;
} else if (status & RCSR_BREAK) {
printk(KERN_DEBUG "aurora%d: port %d: Handling break...\n",
board_No(bp), port_No(port));
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
if (port->flags & ASYNC_SAK)
do_SAK(tty);
} else if (status & RCSR_PE)
*tty->flip.flag_buf_ptr++ = TTY_PARITY;
else if (status & RCSR_FE)
*tty->flip.flag_buf_ptr++ = TTY_FRAME;
else if (status & RCSR_OE)
*tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
else
*tty->flip.flag_buf_ptr++ = 0;
*tty->flip.char_buf_ptr++ = ch;
tty->flip.count++;
queue_task(&tty->flip.tqueue, &tq_timer);
}
static void aurora_receive(struct Aurora_board const * bp, int chip)
{
struct Aurora_port *port;
struct tty_struct *tty;
unsigned char count,cnt;
if (!(port = aurora_get_port(bp, chip, "Receive")))
return;
tty = port->tty;
count = sbus_readb(&bp->r[chip]->r[CD180_RDCR]);
#ifdef AURORA_REPORT_FIFO
port->hits[count > 8 ? 9 : count]++;
#endif
while (count--) {
if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
#ifdef AURORA_INTNORM
printk("aurora%d: port %d: Working around flip buffer overflow.\n",
board_No(bp), port_No(port));
#endif
break;
}
cnt = sbus_readb(&bp->r[chip]->r[CD180_RDR]);
*tty->flip.char_buf_ptr++ = cnt;
*tty->flip.flag_buf_ptr++ = 0;
tty->flip.count++;
}
queue_task(&tty->flip.tqueue, &tq_timer);
}
static void aurora_transmit(struct Aurora_board const * bp, int chip)
{
struct Aurora_port *port;
struct tty_struct *tty;
unsigned char count;
if (!(port = aurora_get_port(bp, chip, "Transmit")))
return;
tty = port->tty;
if (port->SRER & SRER_TXEMPTY) {
/* FIFO drained */
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
port->SRER &= ~SRER_TXEMPTY;
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
return;
}
if ((port->xmit_cnt <= 0 && !port->break_length)
|| tty->stopped || tty->hw_stopped) {
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
port->SRER &= ~SRER_TXRDY;
sbus_writeb(port->SRER,
&bp->r[chip]->r[CD180_SRER]);
return;
}
if (port->break_length) {
if (port->break_length > 0) {
if (port->COR2 & COR2_ETC) {
sbus_writeb(CD180_C_ESC,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(CD180_C_SBRK,
&bp->r[chip]->r[CD180_TDR]);
port->COR2 &= ~COR2_ETC;
}
count = MIN(port->break_length, 0xff);
sbus_writeb(CD180_C_ESC,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(CD180_C_DELAY,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(count,
&bp->r[chip]->r[CD180_TDR]);
if (!(port->break_length -= count))
port->break_length--;
} else {
sbus_writeb(CD180_C_ESC,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(CD180_C_EBRK,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(port->COR2,
&bp->r[chip]->r[CD180_COR2]);
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_CORCHG2,
&bp->r[chip]->r[CD180_CCR]);
port->break_length = 0;
}
return;
}
count = CD180_NFIFO;
do {
u8 byte = port->xmit_buf[port->xmit_tail++];
sbus_writeb(byte, &bp->r[chip]->r[CD180_TDR]);
port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1);
if (--port->xmit_cnt <= 0)
break;
} while (--count > 0);
if (port->xmit_cnt <= 0) {
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
port->SRER &= ~SRER_TXRDY;
sbus_writeb(port->SRER,
&bp->r[chip]->r[CD180_SRER]);
}
if (port->xmit_cnt <= port->wakeup_chars)
aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP);
}
static void aurora_check_modem(struct Aurora_board const * bp, int chip)
{
struct Aurora_port *port;
struct tty_struct *tty;
unsigned char mcr;
if (!(port = aurora_get_port(bp, chip, "Modem")))
return;
tty = port->tty;
mcr = sbus_readb(&bp->r[chip]->r[CD180_MCR]);
if (mcr & MCR_CDCHG) {
if (sbus_readb(&bp->r[chip]->r[CD180_MSVR]) & MSVR_CD)
wake_up_interruptible(&port->open_wait);
else if (!((port->flags & ASYNC_CALLOUT_ACTIVE) &&
(port->flags & ASYNC_CALLOUT_NOHUP))) {
MOD_INC_USE_COUNT;
if (schedule_task(&port->tqueue_hangup) == 0)
MOD_DEC_USE_COUNT;
}
}
/* We don't have such things yet. My aurora board has DTR and RTS swapped, but that doesn't count in this driver. Let's hope
* Aurora didn't made any boards with CTS or DSR broken...
*/
/* #ifdef AURORA_BRAIN_DAMAGED_CTS
if (mcr & MCR_CTSCHG) {
if (aurora_in(bp, CD180_MSVR) & MSVR_CTS) {
tty->hw_stopped = 0;
port->SRER |= SRER_TXRDY;
if (port->xmit_cnt <= port->wakeup_chars)
aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP);
} else {
tty->hw_stopped = 1;
port->SRER &= ~SRER_TXRDY;
}
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
}
if (mcr & MCR_DSRCHG) {
if (aurora_in(bp, CD180_MSVR) & MSVR_DSR) {
tty->hw_stopped = 0;
port->SRER |= SRER_TXRDY;
if (port->xmit_cnt <= port->wakeup_chars)
aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP);
} else {
tty->hw_stopped = 1;
port->SRER &= ~SRER_TXRDY;
}
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
}
#endif AURORA_BRAIN_DAMAGED_CTS */
/* Clear change bits */
sbus_writeb(0, &bp->r[chip]->r[CD180_MCR]);
}
/* The main interrupt processing routine */
static void aurora_interrupt(int irq, void * dev_id, struct pt_regs * regs)
{
unsigned char status;
unsigned char ack,chip/*,chip_id*/;
struct Aurora_board * bp = (struct Aurora_board *) dev_id;
unsigned long loop = 0;
#ifdef AURORA_INT_DEBUG
printk("IRQ%d %d\n",irq,++irqhit);
#ifdef AURORA_FLOODPRO
if (irqhit>=AURORA_FLOODPRO)
sbus_writeb(8, &bp->r0->r);
#endif
#endif
/* old bp = IRQ_to_board[irq&0x0f];*/
if (!bp || !(bp->flags & AURORA_BOARD_ACTIVE))
return;
/* The while() below takes care of this.
status = sbus_readb(&bp->r[0]->r[CD180_SRSR]);
#ifdef AURORA_INT_DEBUG
printk("mumu: %02x\n", status);
#endif
if (!(status&SRSR_ANYINT))
return; * Nobody has anything to say, so exit *
*/
while ((loop++ < 48) &&
(status = sbus_readb(&bp->r[0]->r[CD180_SRSR]) & SRSR_ANYINT)){
#ifdef AURORA_INT_DEBUG
printk("SRSR: %02x\n", status);
#endif
if (status & SRSR_REXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_RINT]);
#ifdef AURORA_INT_DEBUG
printk("R-ACK %02x\n", ack);
#endif
if ((ack >> 5) == board_No(bp)) {
if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) {
if ((ack&GSVR_ITMASK)==GSVR_IT_RGD) {
aurora_receive(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
} else if ((ack & GSVR_ITMASK) == GSVR_IT_REXC) {
aurora_receive_exc(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
}
}
}
} else if (status & SRSR_TEXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_TINT]);
#ifdef AURORA_INT_DEBUG
printk("T-ACK %02x\n", ack);
#endif
if ((ack >> 5) == board_No(bp)) {
if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) {
if ((ack&GSVR_ITMASK)==GSVR_IT_TX) {
aurora_transmit(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
}
}
}
} else if (status & SRSR_MEXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_MINT]);
#ifdef AURORA_INT_DEBUG
printk("M-ACK %02x\n", ack);
#endif
if ((ack >> 5) == board_No(bp)) {
if ((chip = ((ack>>3)&3)-1) < AURORA_NCD180) {
if ((ack&GSVR_ITMASK)==GSVR_IT_MDM) {
aurora_check_modem(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
}
}
}
}
}
/* I guess this faster code can be used with CD1865, using AUROPRI and GLOBPRI. */
#if 0
while ((loop++ < 48)&&(status=bp->r[0]->r[CD180_SRSR]&SRSR_ANYINT)){
#ifdef AURORA_INT_DEBUG
printk("SRSR: %02x\n",status);
#endif
ack = sbus_readb(&bp->r3->r[0]);
#ifdef AURORA_INT_DEBUG
printk("ACK: %02x\n",ack);
#endif
if ((ack>>5)==board_No(bp)) {
if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) {
ack&=GSVR_ITMASK;
if (ack==GSVR_IT_RGD) {
aurora_receive(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
} else if (ack==GSVR_IT_REXC) {
aurora_receive_exc(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
} else if (ack==GSVR_IT_TX) {
aurora_transmit(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
} else if (ack==GSVR_IT_MDM) {
aurora_check_modem(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
}
}
}
}
#endif
/* This is the old handling routine, used in riscom8 for only one CD180. I keep it here for reference. */
#if 0
for(chip=0;chip<AURORA_NCD180;chip++){
chip_id=(board_No(bp)<<5)|((chip+1)<<3);
loop=0;
while ((loop++ < 1) &&
((status = sbus_readb(&bp->r[chip]->r[CD180_SRSR])) &
(SRSR_TEXT | SRSR_MEXT | SRSR_REXT))) {
if (status & SRSR_REXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_RINT]);
if (ack == (chip_id | GSVR_IT_RGD)) {
#ifdef AURORA_INTMSG
printk("RX ACK\n");
#endif
aurora_receive(bp,chip);
} else if (ack == (chip_id | GSVR_IT_REXC)) {
#ifdef AURORA_INTMSG
printk("RXC ACK\n");
#endif
aurora_receive_exc(bp,chip);
} else {
#ifdef AURORA_INTNORM
printk("aurora%d-%d: Bad receive ack 0x%02x.\n",
board_No(bp), chip, ack);
#endif
}
} else if (status & SRSR_TEXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_TINT]);
if (ack == (chip_id | GSVR_IT_TX)){
#ifdef AURORA_INTMSG
printk("TX ACK\n");
#endif
aurora_transmit(bp,chip);
} else {
#ifdef AURORA_INTNORM
printk("aurora%d-%d: Bad transmit ack 0x%02x.\n",
board_No(bp), chip, ack);
#endif
}
} else if (status & SRSR_MEXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_MINT]);
if (ack == (chip_id | GSVR_IT_MDM)){
#ifdef AURORA_INTMSG
printk("MDM ACK\n");
#endif
aurora_check_modem(bp,chip);
} else {
#ifdef AURORA_INTNORM
printk("aurora%d-%d: Bad modem ack 0x%02x.\n",
board_No(bp), chip, ack);
#endif
}
}
sbus_writeb(0, &bp->r[chip]->r[CD180_EOSRR]);
}
}
#endif
}
#ifdef AURORA_INT_DEBUG
static void aurora_timer (unsigned long ignored);
static struct timer_list
aurora_poll_timer = { NULL, NULL, 0, 0, aurora_timer };
static void
aurora_timer (unsigned long ignored)
{
unsigned long flags;
int i;
save_flags(flags); cli();
printk("SRSR: %02x,%02x - ",
sbus_readb(&aurora_board[0].r[0]->r[CD180_SRSR]),
sbus_readb(&aurora_board[0].r[1]->r[CD180_SRSR]));
for (i = 0; i < 4; i++) {
udelay(1);
printk("%02x ",
sbus_readb(&aurora_board[0].r3->r[i]));
}
printk("\n");
aurora_poll_timer.expires = jiffies + 300;
add_timer (&aurora_poll_timer);
restore_flags(flags);
}
#endif
/*
* Routines for open & close processing.
*/
/* Called with disabled interrupts */
static int aurora_setup_board(struct Aurora_board * bp)
{
int error;
#ifdef AURORA_ALLIRQ
int i;
for (i = 0; i < AURORA_ALLIRQ; i++) {
error = request_irq(allirq[i]|0x30, aurora_interrupt, SA_SHIRQ,
"sio16", bp);
if (error)
printk(KERN_ERR "IRQ%d request error %d\n",
allirq[i], error);
}
#else
error = request_irq(bp->irq|0x30, aurora_interrupt, SA_SHIRQ,
"sio16", bp);
if (error) {
printk(KERN_ERR "IRQ request error %d\n", error);
return error;
}
#endif
/* Board reset */
sbus_writeb(0, &bp->r0->r);
udelay(1);
if (bp->flags & AURORA_BOARD_TYPE_2) {
/* unknown yet */
} else {
sbus_writeb((AURORA_CFG_ENABLE_IO | AURORA_CFG_ENABLE_IRQ |
(((bp->irq)&0x0f)>>2)),
&bp->r0->r);
}
udelay(10000);
if (aurora_init_CD180(bp,0))error=1;error=0;
if (aurora_init_CD180(bp,1))error++;
if (error == AURORA_NCD180) {
printk(KERN_ERR "Both chips failed initialisation.\n");
return -EIO;
}
#ifdef AURORA_INT_DEBUG
aurora_poll_timer.expires= jiffies + 1;
add_timer(&aurora_poll_timer);
#endif
#ifdef AURORA_DEBUG
printk("aurora_setup_board: end\n");
#endif
return 0;
}
/* Called with disabled interrupts */
static void aurora_shutdown_board(struct Aurora_board *bp)
{
int i;
#ifdef AURORA_DEBUG
printk("aurora_shutdown_board: start\n");
#endif
#ifdef AURORA_INT_DEBUG
del_timer(&aurora_poll_timer);
#endif
#ifdef AURORA_ALLIRQ
for(i=0;i<AURORA_ALLIRQ;i++){
free_irq(allirq[i]|0x30, bp);
/* IRQ_to_board[allirq[i]&0xf] = NULL;*/
}
#else
free_irq(bp->irq|0x30, bp);
/* IRQ_to_board[bp->irq&0xf] = NULL;*/
#endif
/* Drop all DTR's */
for(i=0;i<16;i++){
sbus_writeb(i & 7, &bp->r[i>>3]->r[CD180_CAR]);
udelay(1);
sbus_writeb(0, &bp->r[i>>3]->r[CD180_MSVR]);
udelay(1);
}
/* Board shutdown */
sbus_writeb(0, &bp->r0->r);
#ifdef AURORA_DEBUG
printk("aurora_shutdown_board: end\n");
#endif
}
/* Setting up port characteristics.
* Must be called with disabled interrupts
*/
static void aurora_change_speed(struct Aurora_board *bp, struct Aurora_port *port)
{
struct tty_struct *tty;
unsigned long baud;
long tmp;
unsigned char cor1 = 0, cor3 = 0;
unsigned char mcor1 = 0, mcor2 = 0,chip;
#ifdef AURORA_DEBUG
printk("aurora_change_speed: start\n");
#endif
if (!(tty = port->tty) || !tty->termios)
return;
chip = AURORA_CD180(port_No(port));
port->SRER = 0;
port->COR2 = 0;
port->MSVR = MSVR_RTS|MSVR_DTR;
baud = tty_get_baud_rate(tty);
/* Select port on the board */
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
if (!baud) {
/* Drop DTR & exit */
port->MSVR &= ~(bp->DTR|bp->RTS);
sbus_writeb(port->MSVR,
&bp->r[chip]->r[CD180_MSVR]);
return;
} else {
/* Set DTR on */
port->MSVR |= bp->DTR;
sbus_writeb(port->MSVR,
&bp->r[chip]->r[CD180_MSVR]);
}
/* Now we must calculate some speed dependant things. */
/* Set baud rate for port. */
tmp = (((bp->oscfreq + baud/2) / baud +
CD180_TPC/2) / CD180_TPC);
/* tmp = (bp->oscfreq/7)/baud;
if((tmp%10)>4)tmp=tmp/10+1;else tmp=tmp/10;*/
/* printk("Prescaler period: %d\n",tmp);*/
sbus_writeb((tmp >> 8) & 0xff,
&bp->r[chip]->r[CD180_RBPRH]);
sbus_writeb((tmp >> 8) & 0xff,
&bp->r[chip]->r[CD180_TBPRH]);
sbus_writeb(tmp & 0xff, &bp->r[chip]->r[CD180_RBPRL]);
sbus_writeb(tmp & 0xff, &bp->r[chip]->r[CD180_TBPRL]);
baud = (baud + 5) / 10; /* Estimated CPS */
/* Two timer ticks seems enough to wakeup something like SLIP driver */
tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO;
port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ?
SERIAL_XMIT_SIZE - 1 : tmp);
/* Receiver timeout will be transmission time for 1.5 chars */
tmp = (AURORA_TPS + AURORA_TPS/2 + baud/2) / baud;
tmp = (tmp > 0xff) ? 0xff : tmp;
sbus_writeb(tmp, &bp->r[chip]->r[CD180_RTPR]);
switch (C_CSIZE(tty)) {
case CS5:
cor1 |= COR1_5BITS;
break;
case CS6:
cor1 |= COR1_6BITS;
break;
case CS7:
cor1 |= COR1_7BITS;
break;
case CS8:
cor1 |= COR1_8BITS;
break;
}
if (C_CSTOPB(tty))
cor1 |= COR1_2SB;
cor1 |= COR1_IGNORE;
if (C_PARENB(tty)) {
cor1 |= COR1_NORMPAR;
if (C_PARODD(tty))
cor1 |= COR1_ODDP;
if (I_INPCK(tty))
cor1 &= ~COR1_IGNORE;
}
/* Set marking of some errors */
port->mark_mask = RCSR_OE | RCSR_TOUT;
if (I_INPCK(tty))
port->mark_mask |= RCSR_FE | RCSR_PE;
if (I_BRKINT(tty) || I_PARMRK(tty))
port->mark_mask |= RCSR_BREAK;
if (I_IGNPAR(tty))
port->mark_mask &= ~(RCSR_FE | RCSR_PE);
if (I_IGNBRK(tty)) {
port->mark_mask &= ~RCSR_BREAK;
if (I_IGNPAR(tty))
/* Real raw mode. Ignore all */
port->mark_mask &= ~RCSR_OE;
}
/* Enable Hardware Flow Control */
if (C_CRTSCTS(tty)) {
/*#ifdef AURORA_BRAIN_DAMAGED_CTS
port->SRER |= SRER_DSR | SRER_CTS;
mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD;
mcor2 |= MCOR2_DSROD | MCOR2_CTSOD;
tty->hw_stopped = !(aurora_in(bp, CD180_MSVR) & (MSVR_CTS|MSVR_DSR));
#else*/
port->COR2 |= COR2_CTSAE;
/*#endif*/
if (bp->flags&AURORA_BOARD_DTR_FLOW_OK) {
mcor1 |= AURORA_RXTH;
}
}
/* Enable Software Flow Control. FIXME: I'm not sure about this */
/* Some people reported that it works, but I still doubt */
if (I_IXON(tty)) {
port->COR2 |= COR2_TXIBE;
cor3 |= (COR3_FCT | COR3_SCDE);
if (I_IXANY(tty))
port->COR2 |= COR2_IXM;
sbus_writeb(START_CHAR(tty),
&bp->r[chip]->r[CD180_SCHR1]);
sbus_writeb(STOP_CHAR(tty),
&bp->r[chip]->r[CD180_SCHR2]);
sbus_writeb(START_CHAR(tty),
&bp->r[chip]->r[CD180_SCHR3]);
sbus_writeb(STOP_CHAR(tty),
&bp->r[chip]->r[CD180_SCHR4]);
}
if (!C_CLOCAL(tty)) {
/* Enable CD check */
port->SRER |= SRER_CD;
mcor1 |= MCOR1_CDZD;
mcor2 |= MCOR2_CDOD;
}
if (C_CREAD(tty))
/* Enable receiver */
port->SRER |= SRER_RXD;
/* Set input FIFO size (1-8 bytes) */
cor3 |= AURORA_RXFIFO;
/* Setting up CD180 channel registers */
sbus_writeb(cor1, &bp->r[chip]->r[CD180_COR1]);
sbus_writeb(port->COR2, &bp->r[chip]->r[CD180_COR2]);
sbus_writeb(cor3, &bp->r[chip]->r[CD180_COR3]);
/* Make CD180 know about registers change */
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3,
&bp->r[chip]->r[CD180_CCR]);
/* Setting up modem option registers */
sbus_writeb(mcor1, &bp->r[chip]->r[CD180_MCOR1]);
sbus_writeb(mcor2, &bp->r[chip]->r[CD180_MCOR2]);
/* Enable CD180 transmitter & receiver */
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_TXEN | CCR_RXEN, &bp->r[chip]->r[CD180_CCR]);
/* Enable interrupts */
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
/* And finally set RTS on */
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
#ifdef AURORA_DEBUG
printk("aurora_change_speed: end\n");
#endif
}
/* Must be called with interrupts enabled */
static int aurora_setup_port(struct Aurora_board *bp, struct Aurora_port *port)
{
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_setup_port: start %d\n",port_No(port));
#endif
if (port->flags & ASYNC_INITIALIZED)
return 0;
if (!port->xmit_buf) {
/* We may sleep in get_free_page() */
unsigned long tmp;
if (!(tmp = get_free_page(GFP_KERNEL)))
return -ENOMEM;
if (port->xmit_buf) {
free_page(tmp);
return -ERESTARTSYS;
}
port->xmit_buf = (unsigned char *) tmp;
}
save_flags(flags); cli();
if (port->tty)
clear_bit(TTY_IO_ERROR, &port->tty->flags);
#ifdef MODULE
if (port->count == 1) {
MOD_INC_USE_COUNT;
if((++bp->count) == 1)
bp->flags |= AURORA_BOARD_ACTIVE;
}
#endif
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
aurora_change_speed(bp, port);
port->flags |= ASYNC_INITIALIZED;
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_setup_port: end\n");
#endif
return 0;
}
/* Must be called with interrupts disabled */
static void aurora_shutdown_port(struct Aurora_board *bp, struct Aurora_port *port)
{
struct tty_struct *tty;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_shutdown_port: start\n");
#endif
if (!(port->flags & ASYNC_INITIALIZED))
return;
chip = AURORA_CD180(port_No(port));
#ifdef AURORA_REPORT_OVERRUN
printk("aurora%d: port %d: Total %ld overruns were detected.\n",
board_No(bp), port_No(port), port->overrun);
#endif
#ifdef AURORA_REPORT_FIFO
{
int i;
printk("aurora%d: port %d: FIFO hits [ ",
board_No(bp), port_No(port));
for (i = 0; i < 10; i++) {
printk("%ld ", port->hits[i]);
}
printk("].\n");
}
#endif
if (port->xmit_buf) {
free_page((unsigned long) port->xmit_buf);
port->xmit_buf = NULL;
}
if (!(tty = port->tty) || C_HUPCL(tty)) {
/* Drop DTR */
port->MSVR &= ~(bp->DTR|bp->RTS);
sbus_writeb(port->MSVR,
&bp->r[chip]->r[CD180_MSVR]);
}
/* Select port */
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
/* Reset port */
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_SOFTRESET, &bp->r[chip]->r[CD180_CCR]);
/* Disable all interrupts from this port */
port->SRER = 0;
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
if (tty)
set_bit(TTY_IO_ERROR, &tty->flags);
port->flags &= ~ASYNC_INITIALIZED;
#ifdef MODULE
if (--bp->count < 0) {
printk(KERN_DEBUG "aurora%d: aurora_shutdown_port: "
"bad board count: %d\n",
board_No(bp), bp->count);
bp->count = 0;
}
MOD_DEC_USE_COUNT;
if (!bp->count)
bp->flags &= ~AURORA_BOARD_ACTIVE;
#endif
#ifdef AURORA_DEBUG
printk("aurora_shutdown_port: end\n");
#endif
}
static int block_til_ready(struct tty_struct *tty, struct file * filp,
struct Aurora_port *port)
{
DECLARE_WAITQUEUE(wait, current);
struct Aurora_board *bp = port_Board(port);
int retval;
int do_clocal = 0;
int CD;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("block_til_ready: start\n");
#endif
chip = AURORA_CD180(port_No(port));
/* If the device is in the middle of being closed, then block
* until it's done, and then try again.
*/
if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
interruptible_sleep_on(&port->close_wait);
if (port->flags & ASYNC_HUP_NOTIFY)
return -EAGAIN;
else
return -ERESTARTSYS;
}
/* 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))) {
if (port->flags & ASYNC_CALLOUT_ACTIVE)
return -EBUSY;
port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
if (port->flags & ASYNC_CALLOUT_ACTIVE) {
if (port->normal_termios.c_cflag & CLOCAL)
do_clocal = 1;
} else {
if (C_CLOCAL(tty))
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
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
add_wait_queue(&port->open_wait, &wait);
cli();
if (!tty_hung_up_p(filp))
port->count--;
sti();
port->blocked_open++;
while (1) {
cli();
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
CD = sbus_readb(&bp->r[chip]->r[CD180_MSVR]) & MSVR_CD;
if (!(port->flags & ASYNC_CALLOUT_ACTIVE)) {
port->MSVR=bp->RTS;
/* auto drops DTR */
sbus_writeb(port->MSVR,
&bp->r[chip]->r[CD180_MSVR]);
}
sti();
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
!(port->flags & ASYNC_INITIALIZED)) {
if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
break;
}
if (/*!(port->flags & ASYNC_CALLOUT_ACTIVE) &&*/
!(port->flags & ASYNC_CLOSING) &&
(do_clocal || CD))
break;
if (signal_pending(current)) {
retval = -ERESTARTSYS;
break;
}
schedule();
}
current->state = TASK_RUNNING;
remove_wait_queue(&port->open_wait, &wait);
if (!tty_hung_up_p(filp))
port->count++;
port->blocked_open--;
if (retval)
return retval;
port->flags |= ASYNC_NORMAL_ACTIVE;
#ifdef AURORA_DEBUG
printk("block_til_ready: end\n");
#endif
return 0;
}
static int aurora_open(struct tty_struct * tty, struct file * filp)
{
int board;
int error;
struct Aurora_port * port;
struct Aurora_board * bp;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_open: start\n");
#endif
board = AURORA_BOARD(MINOR(tty->device));
if (board > AURORA_NBOARD ||
!(aurora_board[board].flags & AURORA_BOARD_PRESENT)) {
#ifdef AURORA_DEBUG
printk("aurora_open: error board %d present %d\n",
board, aurora_board[board].flags & AURORA_BOARD_PRESENT);
#endif
return -ENODEV;
}
bp = &aurora_board[board];
port = aurora_port + board * AURORA_NPORT * AURORA_NCD180 + AURORA_PORT(MINOR(tty->device));
if (aurora_paranoia_check(port, tty->device, "aurora_open")) {
#ifdef AURORA_DEBUG
printk("aurora_open: error paranoia check\n");
#endif
return -ENODEV;
}
port->count++;
tty->driver_data = port;
port->tty = tty;
if ((error = aurora_setup_port(bp, port))) {
#ifdef AURORA_DEBUG
printk("aurora_open: error aurora_setup_port ret %d\n",error);
#endif
return error;
}
if ((error = block_til_ready(tty, filp, port))) {
#ifdef AURORA_DEBUG
printk("aurora_open: error block_til_ready ret %d\n",error);
#endif
return error;
}
if ((port->count == 1) && (port->flags & ASYNC_SPLIT_TERMIOS)) {
*tty->termios = port->normal_termios;
save_flags(flags); cli();
aurora_change_speed(bp, port);
restore_flags(flags);
}
port->session = current->session;
port->pgrp = current->pgrp;
#ifdef AURORA_DEBUG
printk("aurora_open: end\n");
#endif
return 0;
}
static void aurora_close(struct tty_struct * tty, struct file * filp)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned long timeout;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_close: start\n");
#endif
if (!port || aurora_paranoia_check(port, tty->device, "close"))
return;
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
if (tty_hung_up_p(filp)) {
restore_flags(flags);
return;
}
bp = port_Board(port);
if ((tty->count == 1) && (port->count != 1)) {
printk(KERN_DEBUG "aurora%d: aurora_close: bad port count; "
"tty->count is 1, port count is %d\n",
board_No(bp), port->count);
port->count = 1;
}
if (--port->count < 0) {
printk(KERN_DEBUG "aurora%d: aurora_close: bad port "
"count for tty%d: %d\n",
board_No(bp), port_No(port), port->count);
port->count = 0;
}
if (port->count) {
restore_flags(flags);
return;
}
port->flags |= ASYNC_CLOSING;
/* Save the termios structure, since this port may have
* separate termios for callout and dialin.
*/
if (port->flags & ASYNC_NORMAL_ACTIVE)
port->normal_termios = *tty->termios;
/* if (port->flags & ASYNC_CALLOUT_ACTIVE)
port->callout_termios = *tty->termios;*/
/* 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 (port->closing_wait != ASYNC_CLOSING_WAIT_NONE){
#ifdef AURORA_DEBUG
printk("aurora_close: waiting to flush...\n");
#endif
tty_wait_until_sent(tty, port->closing_wait);
}
/* At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the
* interrupt driver to stop checking the data ready bit in the
* line status register.
*/
port->SRER &= ~SRER_RXD;
if (port->flags & ASYNC_INITIALIZED) {
port->SRER &= ~SRER_TXRDY;
port->SRER |= SRER_TXEMPTY;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
/*
* Before we drop DTR, make sure the UART transmitter
* has completely drained; this is especially
* important if there is a transmit FIFO!
*/
timeout = jiffies+HZ;
while(port->SRER & SRER_TXEMPTY) {
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(port->timeout);
if (time_after(jiffies, timeout))
break;
}
}
#ifdef AURORA_DEBUG
printk("aurora_close: shutdown_port\n");
#endif
aurora_shutdown_port(bp, port);
if (tty->driver.flush_buffer)
tty->driver.flush_buffer(tty);
if (tty->ldisc.flush_buffer)
tty->ldisc.flush_buffer(tty);
tty->closing = 0;
port->event = 0;
port->tty = 0;
if (port->blocked_open) {
if (port->close_delay) {
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(port->close_delay);
}
wake_up_interruptible(&port->open_wait);
}
port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|
ASYNC_CLOSING);
wake_up_interruptible(&port->close_wait);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_close: end\n");
#endif
}
static int aurora_write(struct tty_struct * tty, int from_user,
const unsigned char *buf, int count)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
int c, total = 0;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_write: start %d\n",count);
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_write"))
return 0;
chip = AURORA_CD180(port_No(port));
bp = port_Board(port);
if (!tty || !port->xmit_buf || !tmp_buf)
return 0;
save_flags(flags);
if (from_user) {
down(&tmp_buf_sem);
while (1) {
c = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
SERIAL_XMIT_SIZE - port->xmit_head));
if (c <= 0)
break;
c -= copy_from_user(tmp_buf, buf, c);
if (!c) {
if (!total)
total = -EFAULT;
break;
}
cli();
c = MIN(c, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
SERIAL_XMIT_SIZE - port->xmit_head));
memcpy(port->xmit_buf + port->xmit_head, tmp_buf, c);
port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
port->xmit_cnt += c;
restore_flags(flags);
buf += c;
count -= c;
total += c;
}
up(&tmp_buf_sem);
} else {
while (1) {
cli();
c = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
SERIAL_XMIT_SIZE - port->xmit_head));
if (c <= 0) {
restore_flags(flags);
break;
}
memcpy(port->xmit_buf + port->xmit_head, buf, c);
port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
port->xmit_cnt += c;
restore_flags(flags);
buf += c;
count -= c;
total += c;
}
}
cli();
if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
!(port->SRER & SRER_TXRDY)) {
port->SRER |= SRER_TXRDY;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
}
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_write: end %d\n",total);
#endif
return total;
}
static void aurora_put_char(struct tty_struct * tty, unsigned char ch)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_put_char: start %c\n",ch);
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_put_char"))
return;
if (!tty || !port->xmit_buf)
return;
save_flags(flags); cli();
if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
restore_flags(flags);
return;
}
port->xmit_buf[port->xmit_head++] = ch;
port->xmit_head &= SERIAL_XMIT_SIZE - 1;
port->xmit_cnt++;
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_put_char: end\n");
#endif
}
static void aurora_flush_chars(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned long flags;
unsigned char chip;
/*#ifdef AURORA_DEBUG
printk("aurora_flush_chars: start\n");
#endif*/
if (aurora_paranoia_check(port, tty->device, "aurora_flush_chars"))
return;
chip = AURORA_CD180(port_No(port));
if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
!port->xmit_buf)
return;
save_flags(flags); cli();
port->SRER |= SRER_TXRDY;
sbus_writeb(port_No(port) & 7,
&port_Board(port)->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER,
&port_Board(port)->r[chip]->r[CD180_SRER]);
restore_flags(flags);
/*#ifdef AURORA_DEBUG
printk("aurora_flush_chars: end\n");
#endif*/
}
static int aurora_write_room(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
int ret;
#ifdef AURORA_DEBUG
printk("aurora_write_room: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_write_room"))
return 0;
ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
if (ret < 0)
ret = 0;
#ifdef AURORA_DEBUG
printk("aurora_write_room: end\n");
#endif
return ret;
}
static int aurora_chars_in_buffer(struct tty_struct *tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
if (aurora_paranoia_check(port, tty->device, "aurora_chars_in_buffer"))
return 0;
return port->xmit_cnt;
}
static void aurora_flush_buffer(struct tty_struct *tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_flush_buffer: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_flush_buffer"))
return;
save_flags(flags); cli();
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
restore_flags(flags);
wake_up_interruptible(&tty->write_wait);
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
tty->ldisc.write_wakeup)
(tty->ldisc.write_wakeup)(tty);
#ifdef AURORA_DEBUG
printk("aurora_flush_buffer: end\n");
#endif
}
static int aurora_get_modem_info(struct Aurora_port * port, unsigned int *value)
{
struct Aurora_board * bp;
unsigned char status,chip;
unsigned int result;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_get_modem_info: start\n");
#endif
chip = AURORA_CD180(port_No(port));
bp = port_Board(port);
save_flags(flags); cli();
sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]);
udelay(1);
status = sbus_readb(&bp->r[chip]->r[CD180_MSVR]);
result = 0/*bp->r[chip]->r[AURORA_RI] & (1u << port_No(port)) ? 0 : TIOCM_RNG*/;
restore_flags(flags);
result |= ((status & bp->RTS) ? TIOCM_RTS : 0)
| ((status & bp->DTR) ? TIOCM_DTR : 0)
| ((status & MSVR_CD) ? TIOCM_CAR : 0)
| ((status & MSVR_DSR) ? TIOCM_DSR : 0)
| ((status & MSVR_CTS) ? TIOCM_CTS : 0);
put_user(result,(unsigned long *) value);
#ifdef AURORA_DEBUG
printk("aurora_get_modem_info: end\n");
#endif
return 0;
}
static int aurora_set_modem_info(struct Aurora_port * port, unsigned int cmd,
unsigned int *value)
{
unsigned int arg;
unsigned long flags;
struct Aurora_board *bp = port_Board(port);
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_set_modem_info: start\n");
#endif
if (get_user(arg, value))
return -EFAULT;
chip = AURORA_CD180(port_No(port));
switch (cmd) {
case TIOCMBIS:
if (arg & TIOCM_RTS)
port->MSVR |= bp->RTS;
if (arg & TIOCM_DTR)
port->MSVR |= bp->DTR;
break;
case TIOCMBIC:
if (arg & TIOCM_RTS)
port->MSVR &= ~bp->RTS;
if (arg & TIOCM_DTR)
port->MSVR &= ~bp->DTR;
break;
case TIOCMSET:
port->MSVR = (arg & TIOCM_RTS) ? (port->MSVR | bp->RTS) :
(port->MSVR & ~bp->RTS);
port->MSVR = (arg & TIOCM_DTR) ? (port->MSVR | bp->RTS) :
(port->MSVR & ~bp->RTS);
break;
default:
return -EINVAL;
};
save_flags(flags); cli();
sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_set_modem_info: end\n");
#endif
return 0;
}
static void aurora_send_break(struct Aurora_port * port, unsigned long length)
{
struct Aurora_board *bp = port_Board(port);
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_send_break: start\n");
#endif
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
port->break_length = AURORA_TPS / HZ * length;
port->COR2 |= COR2_ETC;
port->SRER |= SRER_TXRDY;
sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->COR2, &bp->r[chip]->r[CD180_COR2]);
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_CORCHG2, &bp->r[chip]->r[CD180_CCR]);
aurora_wait_CCR(bp->r[chip]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_send_break: end\n");
#endif
}
static int aurora_set_serial_info(struct Aurora_port * port,
struct serial_struct * newinfo)
{
struct serial_struct tmp;
struct Aurora_board *bp = port_Board(port);
int change_speed;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_set_serial_info: start\n");
#endif
if (copy_from_user(&tmp, newinfo, sizeof(tmp)))
return -EFAULT;
#if 0
if ((tmp.irq != bp->irq) ||
(tmp.port != bp->base) ||
(tmp.type != PORT_CIRRUS) ||
(tmp.baud_base != (bp->oscfreq + CD180_TPC/2) / CD180_TPC) ||
(tmp.custom_divisor != 0) ||
(tmp.xmit_fifo_size != CD180_NFIFO) ||
(tmp.flags & ~AURORA_LEGAL_FLAGS))
return -EINVAL;
#endif
change_speed = ((port->flags & ASYNC_SPD_MASK) !=
(tmp.flags & ASYNC_SPD_MASK));
if (!capable(CAP_SYS_ADMIN)) {
if ((tmp.close_delay != port->close_delay) ||
(tmp.closing_wait != port->closing_wait) ||
((tmp.flags & ~ASYNC_USR_MASK) !=
(port->flags & ~ASYNC_USR_MASK)))
return -EPERM;
port->flags = ((port->flags & ~ASYNC_USR_MASK) |
(tmp.flags & ASYNC_USR_MASK));
} else {
port->flags = ((port->flags & ~ASYNC_FLAGS) |
(tmp.flags & ASYNC_FLAGS));
port->close_delay = tmp.close_delay;
port->closing_wait = tmp.closing_wait;
}
if (change_speed) {
save_flags(flags); cli();
aurora_change_speed(bp, port);
restore_flags(flags);
}
#ifdef AURORA_DEBUG
printk("aurora_set_serial_info: end\n");
#endif
return 0;
}
extern int aurora_get_serial_info(struct Aurora_port * port,
struct serial_struct * retinfo)
{
struct serial_struct tmp;
struct Aurora_board *bp = port_Board(port);
int error;
#ifdef AURORA_DEBUG
printk("aurora_get_serial_info: start\n");
#endif
error = verify_area(VERIFY_WRITE, (void *) retinfo, sizeof(tmp));
if (error)
return error;
memset(&tmp, 0, sizeof(tmp));
tmp.type = PORT_CIRRUS;
tmp.line = port - aurora_port;
tmp.port = 0;
tmp.irq = bp->irq;
tmp.flags = port->flags;
tmp.baud_base = (bp->oscfreq + CD180_TPC/2) / CD180_TPC;
tmp.close_delay = port->close_delay * HZ/100;
tmp.closing_wait = port->closing_wait * HZ/100;
tmp.xmit_fifo_size = CD180_NFIFO;
copy_to_user(retinfo, &tmp, sizeof(tmp));
#ifdef AURORA_DEBUG
printk("aurora_get_serial_info: end\n");
#endif
return 0;
}
static int aurora_ioctl(struct tty_struct * tty, struct file * filp,
unsigned int cmd, unsigned long arg)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
int retval;
#ifdef AURORA_DEBUG
printk("aurora_ioctl: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_ioctl"))
return -ENODEV;
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)
aurora_send_break(port, 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);
aurora_send_break(port, 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 TIOCMGET:
retval = verify_area(VERIFY_WRITE, (void *) arg,
sizeof(unsigned int));
if (retval)
return retval;
return aurora_get_modem_info(port, (unsigned int *) arg);
case TIOCMBIS:
case TIOCMBIC:
case TIOCMSET:
return aurora_set_modem_info(port, cmd, (unsigned int *) arg);
case TIOCGSERIAL:
return aurora_get_serial_info(port, (struct serial_struct *) arg);
case TIOCSSERIAL:
return aurora_set_serial_info(port, (struct serial_struct *) arg);
default:
return -ENOIOCTLCMD;
};
#ifdef AURORA_DEBUG
printk("aurora_ioctl: end\n");
#endif
return 0;
}
static void aurora_throttle(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_throttle: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_throttle"))
return;
bp = port_Board(port);
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
port->MSVR &= ~bp->RTS;
sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]);
udelay(1);
if (I_IXOFF(tty)) {
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_SSCH2, &bp->r[chip]->r[CD180_CCR]);
aurora_wait_CCR(bp->r[chip]);
}
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_throttle: end\n");
#endif
}
static void aurora_unthrottle(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_unthrottle: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_unthrottle"))
return;
bp = port_Board(port);
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
port->MSVR |= bp->RTS;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
if (I_IXOFF(tty)) {
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_SSCH1,
&bp->r[chip]->r[CD180_CCR]);
aurora_wait_CCR(bp->r[chip]);
}
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_unthrottle: end\n");
#endif
}
static void aurora_stop(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_stop: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_stop"))
return;
bp = port_Board(port);
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
port->SRER &= ~SRER_TXRDY;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER,
&bp->r[chip]->r[CD180_SRER]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_stop: end\n");
#endif
}
static void aurora_start(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_start: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_start"))
return;
bp = port_Board(port);
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
if (port->xmit_cnt && port->xmit_buf && !(port->SRER & SRER_TXRDY)) {
port->SRER |= SRER_TXRDY;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER,
&bp->r[chip]->r[CD180_SRER]);
}
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_start: end\n");
#endif
}
/*
* 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_aurora_hangup() -> tty->hangup() -> aurora_hangup()
*
*/
static void do_aurora_hangup(void *private_)
{
struct Aurora_port *port = (struct Aurora_port *) private_;
struct tty_struct *tty;
#ifdef AURORA_DEBUG
printk("do_aurora_hangup: start\n");
#endif
tty = port->tty;
if (tty != NULL) {
tty_hangup(tty); /* FIXME: module removal race - AKPM */
#ifdef AURORA_DEBUG
printk("do_aurora_hangup: end\n");
#endif
}
MOD_DEC_USE_COUNT;
}
static void aurora_hangup(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
#ifdef AURORA_DEBUG
printk("aurora_hangup: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_hangup"))
return;
bp = port_Board(port);
aurora_shutdown_port(bp, port);
port->event = 0;
port->count = 0;
port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
port->tty = 0;
wake_up_interruptible(&port->open_wait);
#ifdef AURORA_DEBUG
printk("aurora_hangup: end\n");
#endif
}
static void aurora_set_termios(struct tty_struct * tty, struct termios * old_termios)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_set_termios: start\n");
#endif
if (aurora_paranoia_check(port, tty->device, "aurora_set_termios"))
return;
if (tty->termios->c_cflag == old_termios->c_cflag &&
tty->termios->c_iflag == old_termios->c_iflag)
return;
save_flags(flags); cli();
aurora_change_speed(port_Board(port), port);
restore_flags(flags);
if ((old_termios->c_cflag & CRTSCTS) &&
!(tty->termios->c_cflag & CRTSCTS)) {
tty->hw_stopped = 0;
aurora_start(tty);
}
#ifdef AURORA_DEBUG
printk("aurora_set_termios: end\n");
#endif
}
static void do_aurora_bh(void)
{
run_task_queue(&tq_aurora);
}
static void do_softint(void *private_)
{
struct Aurora_port *port = (struct Aurora_port *) private_;
struct tty_struct *tty;
#ifdef AURORA_DEBUG
printk("do_softint: start\n");
#endif
tty = port->tty;
if (tty == NULL)
return;
if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event)) {
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
tty->ldisc.write_wakeup)
(tty->ldisc.write_wakeup)(tty);
wake_up_interruptible(&tty->write_wait);
}
#ifdef AURORA_DEBUG
printk("do_softint: end\n");
#endif
}
static int aurora_init_drivers(void)
{
int error;
int i;
#ifdef AURORA_DEBUG
printk("aurora_init_drivers: start\n");
#endif
tmp_buf = (unsigned char *) get_free_page(GFP_KERNEL);
if (tmp_buf == NULL) {
printk(KERN_ERR "aurora: Couldn't get free page.\n");
return 1;
}
init_bh(AURORA_BH, do_aurora_bh);
/* memset(IRQ_to_board, 0, sizeof(IRQ_to_board));*/
memset(&aurora_driver, 0, sizeof(aurora_driver));
aurora_driver.magic = TTY_DRIVER_MAGIC;
aurora_driver.name = "ttyA";
aurora_driver.major = AURORA_MAJOR;
aurora_driver.num = AURORA_TNPORTS;
aurora_driver.type = TTY_DRIVER_TYPE_SERIAL;
aurora_driver.subtype = AURORA_TYPE_NORMAL;
aurora_driver.init_termios = tty_std_termios;
aurora_driver.init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
aurora_driver.flags = TTY_DRIVER_REAL_RAW;
aurora_driver.refcount = &aurora_refcount;
aurora_driver.table = aurora_table;
aurora_driver.termios = aurora_termios;
aurora_driver.termios_locked = aurora_termios_locked;
aurora_driver.open = aurora_open;
aurora_driver.close = aurora_close;
aurora_driver.write = aurora_write;
aurora_driver.put_char = aurora_put_char;
aurora_driver.flush_chars = aurora_flush_chars;
aurora_driver.write_room = aurora_write_room;
aurora_driver.chars_in_buffer = aurora_chars_in_buffer;
aurora_driver.flush_buffer = aurora_flush_buffer;
aurora_driver.ioctl = aurora_ioctl;
aurora_driver.throttle = aurora_throttle;
aurora_driver.unthrottle = aurora_unthrottle;
aurora_driver.set_termios = aurora_set_termios;
aurora_driver.stop = aurora_stop;
aurora_driver.start = aurora_start;
aurora_driver.hangup = aurora_hangup;
error = tty_register_driver(&aurora_driver);
if (error) {
free_page((unsigned long) tmp_buf);
printk(KERN_ERR "aurora: Couldn't register aurora driver, error = %d\n",
error);
return 1;
}
memset(aurora_port, 0, sizeof(aurora_port));
for (i = 0; i < AURORA_TNPORTS; i++) {
aurora_port[i].normal_termios = aurora_driver.init_termios;
aurora_port[i].magic = AURORA_MAGIC;
aurora_port[i].tqueue.routine = do_softint;
aurora_port[i].tqueue.data = &aurora_port[i];
aurora_port[i].tqueue_hangup.routine = do_aurora_hangup;
aurora_port[i].tqueue_hangup.data = &aurora_port[i];
aurora_port[i].close_delay = 50 * HZ/100;
aurora_port[i].closing_wait = 3000 * HZ/100;
init_waitqueue_head(&aurora_port[i].open_wait);
init_waitqueue_head(&aurora_port[i].close_wait);
}
#ifdef AURORA_DEBUG
printk("aurora_init_drivers: end\n");
#endif
return 0;
}
static void aurora_release_drivers(void)
{
#ifdef AURORA_DEBUG
printk("aurora_release_drivers: start\n");
#endif
free_page((unsigned long)tmp_buf);
tty_unregister_driver(&aurora_driver);
#ifdef AURORA_DEBUG
printk("aurora_release_drivers: end\n");
#endif
}
/*
* Called at boot time.
*
* You can specify IO base for up to RC_NBOARD cards,
* using line "riscom8=0xiobase1,0xiobase2,.." at LILO prompt.
* Note that there will be no probing at default
* addresses in this case.
*
*/
void __init aurora_setup(char *str, int *ints)
{
int i;
for(i=0;(i<ints[0])&&(i<4);i++) {
if (ints[i+1]) irqs[i]=ints[i+1];
}
}
static int __init aurora_real_init(void)
{
int found;
int i;
printk(KERN_INFO "aurora: Driver starting.\n");
if(aurora_init_drivers())
return -EIO;
found = aurora_probe();
if(!found) {
aurora_release_drivers();
printk(KERN_INFO "aurora: No Aurora Multiport boards detected.\n");
return -EIO;
} else {
printk(KERN_INFO "aurora: %d boards found.\n", found);
}
for (i = 0; i < found; i++) {
int ret = aurora_setup_board(&aurora_board[i]);
if (ret) {
#ifdef AURORA_DEBUG
printk(KERN_ERR "aurora_init: error aurora_setup_board ret %d\n",
ret);
#endif
return ret;
}
}
return 0;
}
int irq = 0;
int irq1 = 0;
int irq2 = 0;
int irq3 = 0;
MODULE_PARM(irq , "i");
MODULE_PARM(irq1, "i");
MODULE_PARM(irq2, "i");
MODULE_PARM(irq3, "i");
static int __init aurora_init(void)
{
if (irq ) irqs[0]=irq ;
if (irq1) irqs[1]=irq1;
if (irq2) irqs[2]=irq2;
if (irq3) irqs[3]=irq3;
return aurora_real_init();
}
static void __exit aurora_cleanup(void)
{
int i;
#ifdef AURORA_DEBUG
printk("cleanup_module: aurora_release_drivers\n");
#endif
aurora_release_drivers();
for (i = 0; i < AURORA_NBOARD; i++)
if (aurora_board[i].flags & AURORA_BOARD_PRESENT) {
aurora_shutdown_board(&aurora_board[i]);
aurora_release_io_range(&aurora_board[i]);
}
}
module_init(aurora_init);
module_exit(aurora_cleanup);
MODULE_LICENSE("GPL");
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