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@@ -1,2364 +0,0 @@
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-/* $Id: aurora.c,v 1.19 2002/01/08 16:00:16 davem Exp $
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- * linux/drivers/sbus/char/aurora.c -- Aurora multiport driver
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- *
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- * Copyright (c) 1999 by Oliver Aldulea (oli at bv dot ro)
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- *
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- * This code is based on the RISCom/8 multiport serial driver written
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- * by Dmitry Gorodchanin (pgmdsg@ibi.com), based on the Linux serial
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- * driver, written by Linus Torvalds, Theodore T'so and others.
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- * The Aurora multiport programming info was obtained mainly from the
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- * Cirrus Logic CD180 documentation (available on the web), and by
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- * doing heavy tests on the board. Many thanks to Eddie C. Dost for the
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- * help on the sbus interface.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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- *
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- * Revision 1.0
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- *
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- * This is the first public release.
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- *
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- * Most of the information you need is in the aurora.h file. Please
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- * read that file before reading this one.
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- *
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- * Several parts of the code do not have comments yet.
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- *
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- * n.b. The board can support 115.2 bit rates, but only on a few
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- * ports. The total badwidth of one chip (ports 0-7 or 8-15) is equal
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- * to OSC_FREQ div 16. In case of my board, each chip can take 6
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- * channels of 115.2 kbaud. This information is not well-tested.
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- *
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- * Fixed to use tty_get_baud_rate().
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- * Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12
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- */
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-
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-#include <linux/module.h>
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-
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-#include <linux/errno.h>
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-#include <linux/sched.h>
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-#ifdef AURORA_INT_DEBUG
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-#include <linux/timer.h>
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-#endif
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-#include <linux/interrupt.h>
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-#include <linux/tty.h>
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-#include <linux/tty_flip.h>
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-#include <linux/major.h>
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-#include <linux/string.h>
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-#include <linux/fcntl.h>
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-#include <linux/mm.h>
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-#include <linux/kernel.h>
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-#include <linux/init.h>
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-#include <linux/delay.h>
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-#include <linux/bitops.h>
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-
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-#include <asm/io.h>
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-#include <asm/irq.h>
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-#include <asm/oplib.h>
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-#include <asm/system.h>
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-#include <asm/kdebug.h>
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-#include <asm/sbus.h>
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-#include <asm/uaccess.h>
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-
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-#include "aurora.h"
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-#include "cd180.h"
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-
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-unsigned char irqs[4] = {
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- 0, 0, 0, 0
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-};
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-
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-#ifdef AURORA_INT_DEBUG
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-int irqhit=0;
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-#endif
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-
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-static struct tty_driver *aurora_driver;
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-static struct Aurora_board aurora_board[AURORA_NBOARD] = {
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- {0,},
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-};
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-
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-static struct Aurora_port aurora_port[AURORA_TNPORTS] = {
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- { 0, },
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-};
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-
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-/* no longer used. static struct Aurora_board * IRQ_to_board[16] = { NULL, } ;*/
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-static unsigned char * tmp_buf = NULL;
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-
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-DECLARE_TASK_QUEUE(tq_aurora);
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-
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-static inline int aurora_paranoia_check(struct Aurora_port const * port,
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- char *name, const char *routine)
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-{
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-#ifdef AURORA_PARANOIA_CHECK
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- static const char *badmagic =
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- KERN_DEBUG "aurora: Warning: bad aurora port magic number for device %s in %s\n";
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- static const char *badinfo =
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- KERN_DEBUG "aurora: Warning: null aurora port for device %s in %s\n";
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-
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- if (!port) {
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- printk(badinfo, name, routine);
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- return 1;
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- }
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- if (port->magic != AURORA_MAGIC) {
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- printk(badmagic, name, routine);
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- return 1;
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- }
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-#endif
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- return 0;
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-}
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-
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-/*
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- *
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- * Service functions for aurora driver.
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- *
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- */
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-
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-/* Get board number from pointer */
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-static inline int board_No (struct Aurora_board const * bp)
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-{
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- return bp - aurora_board;
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-}
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-
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-/* Get port number from pointer */
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-static inline int port_No (struct Aurora_port const * port)
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-{
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- return AURORA_PORT(port - aurora_port);
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-}
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-
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-/* Get pointer to board from pointer to port */
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-static inline struct Aurora_board * port_Board(struct Aurora_port const * port)
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-{
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- return &aurora_board[AURORA_BOARD(port - aurora_port)];
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-}
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-
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-/* Wait for Channel Command Register ready */
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-static inline void aurora_wait_CCR(struct aurora_reg128 * r)
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-{
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- unsigned long delay;
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-
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-#ifdef AURORA_DEBUG
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-printk("aurora_wait_CCR\n");
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-#endif
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- /* FIXME: need something more descriptive than 100000 :) */
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- for (delay = 100000; delay; delay--)
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- if (!sbus_readb(&r->r[CD180_CCR]))
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- return;
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- printk(KERN_DEBUG "aurora: Timeout waiting for CCR.\n");
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-}
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-
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-/*
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- * aurora probe functions.
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- */
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-
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-/* Must be called with enabled interrupts */
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-static inline void aurora_long_delay(unsigned long delay)
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-{
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- unsigned long i;
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-
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-#ifdef AURORA_DEBUG
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- printk("aurora_long_delay: start\n");
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-#endif
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- for (i = jiffies + delay; time_before(jiffies, i); ) ;
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-#ifdef AURORA_DEBUG
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- printk("aurora_long_delay: end\n");
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-#endif
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-}
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-
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-/* Reset and setup CD180 chip */
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-static int aurora_init_CD180(struct Aurora_board * bp, int chip)
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-{
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- unsigned long flags;
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- int id;
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-
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-#ifdef AURORA_DEBUG
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- printk("aurora_init_CD180: start %d:%d\n",
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- board_No(bp), chip);
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-#endif
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- save_flags(flags); cli();
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- sbus_writeb(0, &bp->r[chip]->r[CD180_CAR]);
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- sbus_writeb(0, &bp->r[chip]->r[CD180_GSVR]);
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-
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- /* Wait for CCR ready */
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- aurora_wait_CCR(bp->r[chip]);
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-
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- /* Reset CD180 chip */
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- sbus_writeb(CCR_HARDRESET, &bp->r[chip]->r[CD180_CCR]);
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- udelay(1);
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- sti();
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- id=1000;
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- while((--id) &&
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- (sbus_readb(&bp->r[chip]->r[CD180_GSVR])!=0xff))udelay(100);
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- if(!id) {
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- printk(KERN_ERR "aurora%d: Chip %d failed init.\n",
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- board_No(bp), chip);
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- restore_flags(flags);
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- return(-1);
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- }
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- cli();
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- sbus_writeb((board_No(bp)<<5)|((chip+1)<<3),
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- &bp->r[chip]->r[CD180_GSVR]); /* Set ID for this chip */
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- sbus_writeb(0x80|bp->ACK_MINT,
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- &bp->r[chip]->r[CD180_MSMR]); /* Prio for modem intr */
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- sbus_writeb(0x80|bp->ACK_TINT,
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- &bp->r[chip]->r[CD180_TSMR]); /* Prio for transmitter intr */
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- sbus_writeb(0x80|bp->ACK_RINT,
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- &bp->r[chip]->r[CD180_RSMR]); /* Prio for receiver intr */
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- /* Setting up prescaler. We need 4 tick per 1 ms */
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- sbus_writeb((bp->oscfreq/(1000000/AURORA_TPS)) >> 8,
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- &bp->r[chip]->r[CD180_PPRH]);
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- sbus_writeb((bp->oscfreq/(1000000/AURORA_TPS)) & 0xff,
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- &bp->r[chip]->r[CD180_PPRL]);
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-
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- sbus_writeb(SRCR_AUTOPRI|SRCR_GLOBPRI,
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- &bp->r[chip]->r[CD180_SRCR]);
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-
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- id = sbus_readb(&bp->r[chip]->r[CD180_GFRCR]);
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- printk(KERN_INFO "aurora%d: Chip %d id %02x: ",
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- board_No(bp), chip,id);
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- if(sbus_readb(&bp->r[chip]->r[CD180_SRCR]) & 128) {
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- switch (id) {
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- case 0x82:printk("CL-CD1864 rev A\n");break;
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- case 0x83:printk("CL-CD1865 rev A\n");break;
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- case 0x84:printk("CL-CD1865 rev B\n");break;
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- case 0x85:printk("CL-CD1865 rev C\n");break;
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- default:printk("Unknown.\n");
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- };
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- } else {
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- switch (id) {
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- case 0x81:printk("CL-CD180 rev B\n");break;
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- case 0x82:printk("CL-CD180 rev C\n");break;
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- default:printk("Unknown.\n");
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- };
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- }
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- restore_flags(flags);
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-#ifdef AURORA_DEBUG
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- printk("aurora_init_CD180: end\n");
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-#endif
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- return 0;
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-}
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-
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-static int valid_irq(unsigned char irq)
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-{
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-int i;
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-for(i=0;i<TYPE_1_IRQS;i++)
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- if (type_1_irq[i]==irq) return 1;
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-return 0;
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-}
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-
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-static irqreturn_t aurora_interrupt(int irq, void * dev_id);
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-
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-/* Main probing routine, also sets irq. */
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-static int aurora_probe(void)
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-{
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- struct sbus_bus *sbus;
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- struct sbus_dev *sdev;
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- int grrr;
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- char buf[30];
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- int bn = 0;
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- struct Aurora_board *bp;
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-
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- for_each_sbus(sbus) {
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- for_each_sbusdev(sdev, sbus) {
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-/* printk("Try: %x %s\n",sdev,sdev->prom_name);*/
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- if (!strcmp(sdev->prom_name, "sio16")) {
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-#ifdef AURORA_DEBUG
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- printk(KERN_INFO "aurora: sio16 at %p\n",sdev);
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-#endif
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- if((sdev->reg_addrs[0].reg_size!=1) &&
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- (sdev->reg_addrs[1].reg_size!=128) &&
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- (sdev->reg_addrs[2].reg_size!=128) &&
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- (sdev->reg_addrs[3].reg_size!=4)) {
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- printk(KERN_ERR "aurora%d: registers' sizes "
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- "do not match.\n", bn);
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- break;
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- }
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- bp = &aurora_board[bn];
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- bp->r0 = (struct aurora_reg1 *)
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- sbus_ioremap(&sdev->resource[0], 0,
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- sdev->reg_addrs[0].reg_size,
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- "sio16");
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- if (bp->r0 == NULL) {
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- printk(KERN_ERR "aurora%d: can't map "
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- "reg_addrs[0]\n", bn);
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- break;
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- }
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-#ifdef AURORA_DEBUG
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- printk("Map reg 0: %p\n", bp->r0);
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-#endif
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- bp->r[0] = (struct aurora_reg128 *)
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- sbus_ioremap(&sdev->resource[1], 0,
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- sdev->reg_addrs[1].reg_size,
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- "sio16");
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- if (bp->r[0] == NULL) {
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- printk(KERN_ERR "aurora%d: can't map "
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- "reg_addrs[1]\n", bn);
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- break;
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- }
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-#ifdef AURORA_DEBUG
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- printk("Map reg 1: %p\n", bp->r[0]);
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-#endif
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- bp->r[1] = (struct aurora_reg128 *)
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- sbus_ioremap(&sdev->resource[2], 0,
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- sdev->reg_addrs[2].reg_size,
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- "sio16");
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- if (bp->r[1] == NULL) {
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- printk(KERN_ERR "aurora%d: can't map "
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- "reg_addrs[2]\n", bn);
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- break;
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- }
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-#ifdef AURORA_DEBUG
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- printk("Map reg 2: %p\n", bp->r[1]);
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-#endif
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- bp->r3 = (struct aurora_reg4 *)
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- sbus_ioremap(&sdev->resource[3], 0,
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- sdev->reg_addrs[3].reg_size,
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- "sio16");
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- if (bp->r3 == NULL) {
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- printk(KERN_ERR "aurora%d: can't map "
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- "reg_addrs[3]\n", bn);
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- break;
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- }
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-#ifdef AURORA_DEBUG
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- printk("Map reg 3: %p\n", bp->r3);
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-#endif
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- /* Variables setup */
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- bp->flags = 0;
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-#ifdef AURORA_DEBUG
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- grrr=prom_getint(sdev->prom_node,"intr");
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- printk("intr pri %d\n", grrr);
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-#endif
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- if ((bp->irq=irqs[bn]) && valid_irq(bp->irq) &&
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- !request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) {
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- free_irq(bp->irq|0x30, bp);
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- } else
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- if ((bp->irq=prom_getint(sdev->prom_node, "bintr")) && valid_irq(bp->irq) &&
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- !request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) {
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- free_irq(bp->irq|0x30, bp);
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- } else
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- if ((bp->irq=prom_getint(sdev->prom_node, "intr")) && valid_irq(bp->irq) &&
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- !request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) {
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- free_irq(bp->irq|0x30, bp);
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- } else
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- for(grrr=0;grrr<TYPE_1_IRQS;grrr++) {
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- if ((bp->irq=type_1_irq[grrr])&&!request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) {
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- free_irq(bp->irq|0x30, bp);
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- break;
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- } else {
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- printk(KERN_ERR "aurora%d: Could not get an irq for this board !!!\n",bn);
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- bp->flags=0xff;
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- }
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- }
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- if(bp->flags==0xff)break;
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- printk(KERN_INFO "aurora%d: irq %d\n",bn,bp->irq&0x0f);
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- buf[0]=0;
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- grrr=prom_getproperty(sdev->prom_node,"dtr_rts",buf,sizeof(buf));
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- if(!strcmp(buf,"swapped")){
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- printk(KERN_INFO "aurora%d: Swapped DTR and RTS\n",bn);
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- bp->DTR=MSVR_RTS;
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- bp->RTS=MSVR_DTR;
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- bp->MSVDTR=CD180_MSVRTS;
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- bp->MSVRTS=CD180_MSVDTR;
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- bp->flags|=AURORA_BOARD_DTR_FLOW_OK;
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- }else{
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- #ifdef AURORA_FORCE_DTR_FLOW
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- printk(KERN_INFO "aurora%d: Forcing swapped DTR-RTS\n",bn);
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|
- 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);
|
|
|
-}
|
|
|
-
|
|
|
-static 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)
|
|
|
-{
|
|
|
- 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 DEFINE_TIMER(aurora_poll_timer, 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, IRQF_SHARED,
|
|
|
- "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, IRQF_SHARED,
|
|
|
- "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) {
|
|
|
- msleep_interruptible(jiffies_to_msecs(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) {
|
|
|
- msleep_interruptible(jiffies_to_msecs(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 const 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");
|
Linus Torvalds