patch-2.3.4 linux/drivers/sbus/char/aurora.c
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- Lines: 2374
- Date:
Mon May 31 22:08:10 1999
- Orig file:
v2.3.3/linux/drivers/sbus/char/aurora.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.3/linux/drivers/sbus/char/aurora.c linux/drivers/sbus/char/aurora.c
@@ -0,0 +1,2373 @@
+/*
+ * linux/drivers/sbus/char/aurora.c -- Aurora multiport driver
+ *
+ * Copyright (c) 1999 by Oliver Aldulea (oli@bv.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.
+ */
+
+#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/config.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 <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/delay.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);
+
+/* Yes, 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.
+ */
+static unsigned long baud_table[] = {
+ 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
+ 9600, 19200, 38400, 57600, 115200, 0,
+ };
+
+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 (!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; i > jiffies; ) ;
+#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();
+ bp->r[chip]->r[CD180_CAR]=0;
+ bp->r[chip]->r[CD180_GSVR]=0;
+ aurora_wait_CCR(bp->r[chip]); /* Wait for CCR ready */
+ bp->r[chip]->r[CD180_CCR]=CCR_HARDRESET; /* Reset CD180 chip */
+ udelay(1);
+ sti();
+ id=1000;
+ while((--id)&&(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();
+ bp->r[chip]->r[CD180_GSVR]=(board_No(bp)<<5)|((chip+1)<<3); /* Set ID for this chip */
+ bp->r[chip]->r[CD180_MSMR]=0x80|bp->ACK_MINT; /* Prio for modem intr */
+ bp->r[chip]->r[CD180_TSMR]=0x80|bp->ACK_TINT; /* Prio for transmitter intr */
+ bp->r[chip]->r[CD180_RSMR]=0x80|bp->ACK_RINT; /* Prio for receiver intr */
+ /* Setting up prescaler. We need 4 tick per 1 ms */
+ bp->r[chip]->r[CD180_PPRH]=(bp->oscfreq/(1000000/AURORA_TPS)) >> 8;
+ bp->r[chip]->r[CD180_PPRL]=(bp->oscfreq/(1000000/AURORA_TPS)) & 0xff;
+
+ bp->r[chip]->r[CD180_SRCR]=SRCR_AUTOPRI|SRCR_GLOBPRI;
+
+ id=bp->r[chip]->r[CD180_GFRCR];
+ printk(KERN_INFO "aurora%d: Chip %d id %02x: ",board_No(bp),chip,id);
+ if(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 linux_sbus *sbus;
+ struct linux_sbus_device *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
+ prom_apply_sbus_ranges(sdev->my_bus, sdev->reg_addrs, sdev->num_registers, sdev);
+ 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 *) sparc_alloc_io(sdev->reg_addrs[0].phys_addr, 0,
+ sdev->reg_addrs[0].reg_size, "sio16",sdev->reg_addrs[0].which_io, 0x0);
+ if (!bp->r0) {
+ printk(KERN_ERR "aurora%d: can't map reg_addrs[0]\n",bn);
+ break;
+ }
+ #ifdef AURORA_DEBUG
+ printk("Map reg 0: %x\n",bp->r0);
+ #endif
+ bp->r[0] = (struct aurora_reg128 *) sparc_alloc_io(sdev->reg_addrs[1].phys_addr, 0,
+ sdev->reg_addrs[1].reg_size, "sio16", sdev->reg_addrs[1].which_io, 0x0);
+ if (!bp->r[0]) {
+ printk(KERN_ERR "aurora%d: can't map reg_addrs[1]\n",bn);
+ break;
+ }
+ #ifdef AURORA_DEBUG
+ printk("Map reg 1: %x\n",bp->r[0]);
+ #endif
+ bp->r[1] = (struct aurora_reg128 *) sparc_alloc_io(sdev->reg_addrs[2].phys_addr, 0,
+ sdev->reg_addrs[2].reg_size, "sio16", sdev->reg_addrs[2].which_io, 0x0);
+ if (!bp->r[1]) {
+ printk(KERN_ERR "aurora%d: can't map reg_addrs[2]\n",bn);
+ break;
+ }
+ #ifdef AURORA_DEBUG
+ printk("Map reg 2: %x\n",bp->r[1]);
+ #endif
+ bp->r3 = (struct aurora_reg4 *) sparc_alloc_io(sdev->reg_addrs[3].phys_addr, 0,
+ sdev->reg_addrs[3].reg_size, "sio16", sdev->reg_addrs[3].which_io, 0x0);
+ if (!bp->r3) {
+ printk(KERN_ERR "aurora%d: can't map reg_addrs[3]\n",bn);
+ break;
+ }
+ #ifdef AURORA_DEBUG
+ printk("Map reg 3: %x\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)
+{
+sparc_free_io(bp->r0,1);
+sparc_free_io(bp->r[0],128);
+sparc_free_io(bp->r[1],128);
+sparc_free_io(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
+}
+
+extern 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)|((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;
+}
+
+extern inline 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 = 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 = bp->r[chip]->r[CD180_RCSR] & port->mark_mask;
+#endif
+ ch = 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);
+}
+
+extern inline 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 = 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=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);
+}
+
+extern inline 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 */
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ port->SRER &= ~SRER_TXEMPTY;
+ bp->r[chip]->r[CD180_SRER]=port->SRER;
+ return;
+ }
+
+ if ((port->xmit_cnt <= 0 && !port->break_length)
+ || tty->stopped || tty->hw_stopped) {
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ port->SRER &= ~SRER_TXRDY;
+ bp->r[chip]->r[CD180_SRER]=port->SRER;
+ return;
+ }
+
+ if (port->break_length) {
+ if (port->break_length > 0) {
+ if (port->COR2 & COR2_ETC) {
+ bp->r[chip]->r[CD180_TDR]=CD180_C_ESC;
+ bp->r[chip]->r[CD180_TDR]=CD180_C_SBRK;
+ port->COR2 &= ~COR2_ETC;
+ }
+ count = MIN(port->break_length, 0xff);
+ bp->r[chip]->r[CD180_TDR]=CD180_C_ESC;
+ bp->r[chip]->r[CD180_TDR]=CD180_C_DELAY;
+ bp->r[chip]->r[CD180_TDR]=count;
+ if (!(port->break_length -= count))
+ port->break_length--;
+ } else {
+ bp->r[chip]->r[CD180_TDR]=CD180_C_ESC;
+ bp->r[chip]->r[CD180_TDR]=CD180_C_EBRK;
+ bp->r[chip]->r[CD180_COR2]=port->COR2;
+ aurora_wait_CCR(bp->r[chip]);
+ bp->r[chip]->r[CD180_CCR]=CCR_CORCHG2;
+ port->break_length = 0;
+ }
+ return;
+ }
+
+ count = CD180_NFIFO;
+ do {
+ bp->r[chip]->r[CD180_TDR]=port->xmit_buf[port->xmit_tail++];
+ port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1);
+ if (--port->xmit_cnt <= 0)
+ break;
+ } while (--count > 0);
+
+ if (port->xmit_cnt <= 0) {
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ port->SRER &= ~SRER_TXRDY;
+ bp->r[chip]->r[CD180_SRER]=port->SRER;
+ }
+ if (port->xmit_cnt <= port->wakeup_chars)
+ aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP);
+}
+
+extern inline 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 = bp->r[chip]->r[CD180_MCR];
+ if (mcr & MCR_CDCHG) {
+ if (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)))
+ queue_task(&port->tqueue_hangup,
+ &tq_scheduler);
+ }
+
+/* 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;
+ }
+ bp->r[chip]->r[CD180_SRER, port->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;
+ }
+ bp->r[chip]->r[CD180_SRER, port->SRER);
+ }
+#endif AURORA_BRAIN_DAMAGED_CTS */
+
+ /* Clear change bits */
+ bp->r[chip]->r[CD180_MCR]=0;
+}
+
+/* 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)
+ bp->r0->r=8;
+ #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=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=bp->r[0]->r[CD180_SRSR]&SRSR_ANYINT)){
+ #ifdef AURORA_INT_DEBUG
+ printk("SRSR: %02x\n",status);
+ #endif
+ if (status&SRSR_REXT) {
+ ack=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);
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ } else
+ if ((ack&GSVR_ITMASK)==GSVR_IT_REXC) {
+ aurora_receive_exc(bp,chip);
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ }
+ }
+ }
+ } else
+ if (status&SRSR_TEXT) {
+ ack=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);
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ }
+ }
+ }
+ } else
+ if (status&SRSR_MEXT) {
+ ack=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);
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ }
+ }
+ }
+ }
+ }
+/* I guess this faster code can be used with CD1865, using AUROPRI and GLOBPRI.
+ while ((loop++ < 48)&&(status=bp->r[0]->r[CD180_SRSR]&SRSR_ANYINT)){
+ #ifdef AURORA_INT_DEBUG
+ printk("SRSR: %02x\n",status);
+ #endif
+ ack=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);
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ } else
+ if (ack==GSVR_IT_REXC) {
+ aurora_receive_exc(bp,chip);
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ } else
+ if (ack==GSVR_IT_TX) {
+ aurora_transmit(bp,chip);
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ } else
+ if (ack==GSVR_IT_MDM) {
+ aurora_check_modem(bp,chip);
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ }
+ }
+ }
+ }
+*/
+/* This is the old handling routine, used in riscom8 for only one CD180. I keep it here for reference.
+for(chip=0;chip<AURORA_NCD180;chip++){
+ chip_id=(board_No(bp)<<5)|((chip+1)<<3);
+ loop=0;
+ while ((loop++ < 1) && ((status = bp->r[chip]->r[CD180_SRSR]) &
+ (SRSR_TEXT | SRSR_MEXT | SRSR_REXT))) {
+
+ if (status & SRSR_REXT) {
+ ack = 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 = 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 = 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
+ ;
+
+ }
+ bp->r[chip]->r[CD180_EOSRR]=0;
+ }
+ }
+*/
+}
+
+
+#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 - ",aurora_board[0].r[0]->r[CD180_SRSR],aurora_board[0].r[1]->r[CD180_SRSR]);
+for(i=0;i<4;i++){
+ udelay(1);
+ printk("%02x ",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 */
+extern inline 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 */
+ bp->r0->r=0;
+ udelay(1);
+ if(bp->flags&AURORA_BOARD_TYPE_2){
+ /* unknown yet */
+ } else {
+ bp->r0->r=AURORA_CFG_ENABLE_IO|AURORA_CFG_ENABLE_IRQ|(((bp->irq)&0x0f)>>2);
+ }
+ 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 */
+extern inline 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++){
+ bp->r[i>>3]->r[CD180_CAR]=i&7;
+ udelay(1);
+ bp->r[i>>3]->r[CD180_MSVR]=0;
+ udelay(1);
+ }
+ /* Board shutdown */
+ bp->r0->r=0;
+
+#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 = C_BAUD(tty);
+
+ if (baud & CBAUDEX) {
+ baud &= ~CBAUDEX;
+ if (baud < 1 || baud > 2)
+ port->tty->termios->c_cflag &= ~CBAUDEX;
+ else
+ baud += 15;
+ }
+ if (baud == 15) {
+ if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
+ baud ++;
+ if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
+ baud += 2;
+ }
+
+ /* Select port on the board */
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+
+ if (!baud_table[baud]) {
+ /* Drop DTR & exit */
+ port->MSVR &= ~(bp->DTR|bp->RTS);
+ bp->r[chip]->r[CD180_MSVR]=port->MSVR;
+ return;
+ } else {
+ /* Set DTR on */
+ port->MSVR |= bp->DTR;
+ bp->r[chip]->r[CD180_MSVR]=port->MSVR;
+ }
+
+ /*
+ * Now we must calculate some speed depended things
+ */
+
+ /* Set baud rate for port */
+ tmp = (((bp->oscfreq + baud_table[baud]/2) / baud_table[baud] +
+ CD180_TPC/2) / CD180_TPC);
+
+/* tmp = (bp->oscfreq/7)/baud_table[baud];
+ if((tmp%10)>4)tmp=tmp/10+1;else tmp=tmp/10;*/
+/* printk("Prescaler period: %d\n",tmp);*/
+
+ bp->r[chip]->r[CD180_RBPRH]=(tmp >> 8) & 0xff;
+ bp->r[chip]->r[CD180_TBPRH]=(tmp >> 8) & 0xff;
+ bp->r[chip]->r[CD180_RBPRL]=tmp & 0xff;
+ bp->r[chip]->r[CD180_TBPRL]=tmp & 0xff;
+
+ baud = (baud_table[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;
+ bp->r[chip]->r[CD180_RTPR]=tmp;
+
+ 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;
+ bp->r[chip]->r[CD180_SCHR1]=START_CHAR(tty);
+ bp->r[chip]->r[CD180_SCHR2]=STOP_CHAR(tty);
+ bp->r[chip]->r[CD180_SCHR3]=START_CHAR(tty);
+ bp->r[chip]->r[CD180_SCHR4]=STOP_CHAR(tty);
+ }
+ 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 */
+ bp->r[chip]->r[CD180_COR1]=cor1;
+ bp->r[chip]->r[CD180_COR2]=port->COR2;
+ bp->r[chip]->r[CD180_COR3]=cor3;
+ /* Make CD180 know about registers change */
+ aurora_wait_CCR(bp->r[chip]);
+ bp->r[chip]->r[CD180_CCR]=CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3;
+ /* Setting up modem option registers */
+ bp->r[chip]->r[CD180_MCOR1]=mcor1;
+ bp->r[chip]->r[CD180_MCOR2]=mcor2;
+ /* Enable CD180 transmitter & receiver */
+ aurora_wait_CCR(bp->r[chip]);
+ bp->r[chip]->r[CD180_CCR]=CCR_TXEN | CCR_RXEN;
+ /* Enable interrupts */
+ bp->r[chip]->r[CD180_SRER]=port->SRER;
+ /* And finally set RTS on */
+ bp->r[chip]->r[CD180_MSVR]=port->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);
+ bp->r[chip]->r[CD180_MSVR]=port->MSVR;
+ }
+
+ /* Select port */
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ /* Reset port */
+ aurora_wait_CCR(bp->r[chip]);
+ bp->r[chip]->r[CD180_CCR]=CCR_SOFTRESET;
+ /* Disable all interrupts from this port */
+ port->SRER = 0;
+ bp->r[chip]->r[CD180_SRER]=port->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();
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ CD = bp->r[chip]->r[CD180_MSVR] & MSVR_CD;
+ if (!(port->flags & ASYNC_CALLOUT_ACTIVE)) {
+ port->MSVR=bp->RTS;
+ bp->r[chip]->r[CD180_MSVR]=port->MSVR;/* auto drops DTR */
+ }
+ sti();
+ 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;
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ bp->r[chip]->r[CD180_SRER]=port->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;
+
+ if (from_user)
+ down(&tmp_buf_sem);
+
+ save_flags(flags);
+ while (1) {
+ cli();
+ c = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - port->xmit_head));
+ if (c <= 0)
+ break;
+
+ if (from_user) {
+ copy_from_user(tmp_buf, buf, c);
+ 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);
+ } else
+ 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;
+ }
+ if (from_user)
+ up(&tmp_buf_sem);
+ if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
+ !(port->SRER & SRER_TXRDY)) {
+ port->SRER |= SRER_TXRDY;
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ bp->r[chip]->r[CD180_SRER]=port->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;
+ port_Board(port)->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ port_Board(port)->r[chip]->r[CD180_SRER]=port->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();
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ status = 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)
+{
+ int error;
+ 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
+ error = get_user(arg, value);
+ if (error)
+ return error;
+ 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();
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ bp->r[chip]->r[CD180_MSVR]=port->MSVR;
+ restore_flags(flags);
+#ifdef AURORA_DEBUG
+printk("aurora_set_modem_info: end\n");
+#endif
+ return 0;
+}
+
+extern inline 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;
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ bp->r[chip]->r[CD180_COR2]=port->COR2;
+ bp->r[chip]->r[CD180_SRER]=port->SRER;
+ aurora_wait_CCR(bp->r[chip]);
+ bp->r[chip]->r[CD180_CCR]=CCR_CORCHG2;
+ aurora_wait_CCR(bp->r[chip]);
+ restore_flags(flags);
+#ifdef AURORA_DEBUG
+printk("aurora_send_break: end\n");
+#endif
+}
+
+extern inline 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;
+ int error;
+
+#ifdef AURORA_DEBUG
+printk("aurora_set_serial_info: start\n");
+#endif
+ error = verify_area(VERIFY_READ, (void *) newinfo, sizeof(tmp));
+ if (error)
+ return error;
+ copy_from_user(&tmp, newinfo, sizeof(tmp));
+
+#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 (!suser()) {
+ 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 inline 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 error;
+ 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:
+ error = verify_area(VERIFY_WRITE, (void *) arg, sizeof(long));
+ if (error)
+ return error;
+ put_user(C_CLOCAL(tty) ? 1 : 0,
+ (unsigned long *) arg);
+ return 0;
+ case TIOCSSOFTCAR:
+ retval = get_user(arg,(unsigned long *) arg);
+ if (retval)
+ return retval;
+ tty->termios->c_cflag =
+ ((tty->termios->c_cflag & ~CLOCAL) |
+ (arg ? CLOCAL : 0));
+ return 0;
+ case TIOCMGET:
+ error = verify_area(VERIFY_WRITE, (void *) arg,
+ sizeof(unsigned int));
+ if (error)
+ return error;
+ 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;
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ if (I_IXOFF(tty)) {
+ aurora_wait_CCR(bp->r[chip]);
+ bp->r[chip]->r[CD180_CCR]=CCR_SSCH2;
+ aurora_wait_CCR(bp->r[chip]);
+ }
+ bp->r[chip]->r[CD180_MSVR]=port->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;
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ if (I_IXOFF(tty)) {
+ aurora_wait_CCR(bp->r[chip]);
+ bp->r[chip]->r[CD180_CCR]=CCR_SSCH1;
+ aurora_wait_CCR(bp->r[chip]);
+ }
+ bp->r[chip]->r[CD180_MSVR]=port->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;
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ bp->r[chip]->r[CD180_SRER]=port->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;
+ bp->r[chip]->r[CD180_CAR]=port_No(port)&7;
+ udelay(1);
+ bp->r[chip]->r[CD180_SRER]=port->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)
+ return;
+
+ tty_hangup(tty);
+#ifdef AURORA_DEBUG
+printk("do_aurora_hangup: end\n");
+#endif
+}
+
+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
+ if(!(tty = port->tty))
+ 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
+ if (!(tmp_buf = (unsigned char *) get_free_page(GFP_KERNEL))) {
+ 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;
+
+ if ((error = tty_register_driver(&aurora_driver))) {
+ 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
+}
+
+#ifndef MODULE
+/*
+ * 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.
+ *
+ */
+__init_func(void 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];
+ }
+}
+
+__init_func(int aurora_init(void))
+#else
+int aurora_init(void)
+#endif
+{
+int found;
+int grrr,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++){
+ if ((grrr = aurora_setup_board(&aurora_board[i]))) {
+ #ifdef AURORA_DEBUG
+ printk(KERN_ERR "aurora_init: error aurora_setup_board ret %d\n",grrr);
+ #endif
+ return grrr;
+ }
+}
+return 0;
+}
+
+#ifdef MODULE
+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");
+
+int init_module(void)
+{
+ if (irq ) irqs[0]=irq ;
+ if (irq1) irqs[1]=irq1;
+ if (irq2) irqs[2]=irq2;
+ if (irq3) irqs[3]=irq3;
+ return aurora_init();
+}
+
+void cleanup_module(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]);
+ }
+}
+#endif /* MODULE */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)