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-rw-r--r--drivers/sbus/char/aurora.c2372
1 files changed, 2372 insertions, 0 deletions
diff --git a/drivers/sbus/char/aurora.c b/drivers/sbus/char/aurora.c
new file mode 100644
index 0000000..e5fa170
--- /dev/null
+++ b/drivers/sbus/char/aurora.c
@@ -0,0 +1,2372 @@
+/* $Id: aurora.c,v 1.19 2002/01/08 16:00:16 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/delay.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/oplib.h>
+#include <asm/system.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
+
+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);
+
+DECLARE_TASK_QUEUE(tq_aurora);
+
+static inline int aurora_paranoia_check(struct Aurora_port const * port,
+ char *name, 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, name, routine);
+ return 1;
+ }
+ if (port->magic != AURORA_MAGIC) {
+ printk(badmagic, name, 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 irqreturn_t 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
+ schedule_task(&port->tqueue_hangup);
+ }
+
+/* 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 irqreturn_t 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 IRQ_NONE;
+
+/* 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 IRQ_NONE; * 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
+
+ return IRQ_HANDLED;
+}
+
+#ifdef AURORA_INT_DEBUG
+static void aurora_timer (unsigned long ignored);
+
+static struct timer_list aurora_poll_timer =
+ TIMER_INITIALIZER(aurora_timer, 0, 0);
+
+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 dependent 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_zeroed_page() */
+ unsigned long tmp;
+
+ if (!(tmp = get_zeroed_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) && ((++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;
+ }
+
+ 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))) {
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+ }
+
+ 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;
+ 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_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(tty->index);
+ 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(tty->index);
+ if ((aurora_paranoia_check(port, tty->name, "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;
+ }
+
+#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->name, "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;
+
+ /* 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);
+ tty_ldisc_flush(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_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,
+ 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->name, "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);
+ 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->name, "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->name, "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->name, "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->name, "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->name, "aurora_flush_buffer"))
+ return;
+
+ save_flags(flags); cli();
+ port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
+ restore_flags(flags);
+
+ tty_wakeup(tty);
+#ifdef AURORA_DEBUG
+ printk("aurora_flush_buffer: end\n");
+#endif
+}
+
+static int aurora_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
+ 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
+ if ((aurora_paranoia_check(port, tty->name, __FUNCTION__))
+ return -ENODEV;
+
+ 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);
+
+#ifdef AURORA_DEBUG
+ printk("aurora_get_modem_info: end\n");
+#endif
+ return result;
+}
+
+static int aurora_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
+ 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 ((aurora_paranoia_check(port, tty->name, __FUNCTION__))
+ return -ENODEV;
+
+ chip = AURORA_CD180(port_No(port));
+
+ save_flags(flags); cli();
+ if (set & TIOCM_RTS)
+ port->MSVR |= bp->RTS;
+ if (set & TIOCM_DTR)
+ port->MSVR |= bp->DTR;
+ if (clear & TIOCM_RTS)
+ port->MSVR &= ~bp->RTS;
+ if (clear & TIOCM_DTR)
+ port->MSVR &= ~bp->DTR;
+
+ 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);
+
+#ifdef AURORA_DEBUG
+ printk("aurora_get_serial_info: start\n");
+#endif
+ if (!access_ok(VERIFY_WRITE, (void *) retinfo, sizeof(tmp)))
+ return -EFAULT;
+
+ 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->name, "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 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->name, "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->name, "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->name, "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->name, "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
+ }
+}
+
+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->name, "aurora_hangup"))
+ return;
+
+ bp = port_Board(port);
+
+ aurora_shutdown_port(bp, port);
+ port->event = 0;
+ port->count = 0;
+ port->flags &= ~ASYNC_NORMAL_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->name, "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)) {
+ tty_wakeup(tty);
+ }
+#ifdef AURORA_DEBUG
+ printk("do_softint: end\n");
+#endif
+}
+
+static struct tty_operations aurora_ops = {
+ .open = aurora_open,
+ .close = aurora_close,
+ .write = aurora_write,
+ .put_char = aurora_put_char,
+ .flush_chars = aurora_flush_chars,
+ .write_room = aurora_write_room,
+ .chars_in_buffer = aurora_chars_in_buffer,
+ .flush_buffer = aurora_flush_buffer,
+ .ioctl = aurora_ioctl,
+ .throttle = aurora_throttle,
+ .unthrottle = aurora_unthrottle,
+ .set_termios = aurora_set_termios,
+ .stop = aurora_stop,
+ .start = aurora_start,
+ .hangup = aurora_hangup,
+ .tiocmget = aurora_tiocmget,
+ .tiocmset = aurora_tiocmset,
+};
+
+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_zeroed_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);
+ aurora_driver = alloc_tty_driver(AURORA_INPORTS);
+ if (!aurora_driver) {
+ printk(KERN_ERR "aurora: Couldn't allocate tty driver.\n");
+ free_page((unsigned long) tmp_buf);
+ return 1;
+ }
+ aurora_driver->owner = THIS_MODULE;
+ aurora_driver->name = "ttyA";
+ aurora_driver->major = AURORA_MAJOR;
+ aurora_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ aurora_driver->subtype = SERIAL_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;
+ tty_set_operations(aurora_driver, &aurora_ops);
+ error = tty_register_driver(aurora_driver);
+ if (error) {
+ put_tty_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].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);
+ put_tty_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_param(irq , int, 0);
+module_param(irq1, int, 0);
+module_param(irq2, int, 0);
+module_param(irq3, int, 0);
+
+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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