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/*
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* specialix.c -- specialix IO8+ multiport serial driver.
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*
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* Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl)
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* Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com)
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*
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* Specialix pays for the development and support of this driver.
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* Please DO contact io8-linux@specialix.co.uk if you require
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* support. But please read the documentation (specialix.txt)
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* first.
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*
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* This driver was developped in the BitWizard linux device
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* driver service. If you require a linux device driver for your
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* product, please contact devices@BitWizard.nl for a quote.
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*
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* This code is firmly based on the riscom/8 serial driver,
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* written by Dmitry Gorodchanin. The specialix IO8+ card
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* programming information was obtained from the CL-CD1865 Data
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* Book, and Specialix document number 6200059: IO8+ Hardware
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* Functional Specification.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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
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* useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the 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
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* License along with this program; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
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* USA.
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*
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* Revision history:
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*
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* Revision 1.0: April 1st 1997.
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* Initial release for alpha testing.
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* Revision 1.1: April 14th 1997.
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* Incorporated Richard Hudsons suggestions,
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* removed some debugging printk's.
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* Revision 1.2: April 15th 1997.
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* Ported to 2.1.x kernels.
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* Revision 1.3: April 17th 1997
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* Backported to 2.0. (Compatibility macros).
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* Revision 1.4: April 18th 1997
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* Fixed DTR/RTS bug that caused the card to indicate
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* "don't send data" to a modem after the password prompt.
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* Fixed bug for premature (fake) interrupts.
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* Revision 1.5: April 19th 1997
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* fixed a minor typo in the header file, cleanup a little.
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* performance warnings are now MAXed at once per minute.
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* Revision 1.6: May 23 1997
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* Changed the specialix=... format to include interrupt.
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* Revision 1.7: May 27 1997
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* Made many more debug printk's a compile time option.
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* Revision 1.8: Port to 2.1 kernel. -- Not here.
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*
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* Revision 1.9: October 1 1998
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* Support for the PCI version of the card.
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*
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*/
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#define VERSION "1.9"
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/*
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* There is a bunch of documentation about the card, jumpers, config
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* settings, restrictions, cables, device names and numbers in
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* ../../Documentation/specialix.txt
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*/
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#include <linux/module.h>
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#include <linux/config.h> /* CONFIG_SPECIALIX_RTSCTS */
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#include <asm/io.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <linux/errno.h>
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#include <linux/tty.h>
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#include <linux/mm.h>
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#include <linux/serial.h>
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#include <linux/fcntl.h>
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#include <linux/major.h>
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#include <linux/delay.h>
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#include <linux/tqueue.h>
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#include <linux/version.h>
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#include <linux/pci.h>
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#include <linux/bios32.h>
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/* ************************************************************** */
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/* * This section can be removed when 2.0 becomes outdated.... * */
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/* ************************************************************** */
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#if LINUX_VERSION_CODE < 131328 /* Less than 2.1.0 */
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#define TWO_ZERO
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#else
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#if LINUX_VERSION_CODE < 131368 /* less than 2.1.40 */
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/* This has not been extensively tested yet. Sorry. */
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#warning "You're on your own between 2.1.0 and 2.1.40.... "
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#warning "Please use 2.1.40 or higher."
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#endif
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#endif
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#ifdef TWO_ZERO
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#define Get_user(a,b) a = get_user(b)
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#define copy_from_user(a,b,c) memcpy_fromfs(a,b,c)
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#define copy_to_user(a,b,c) memcpy_tofs(a,b,c)
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#define queue_task queue_task_irq_off
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#else
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#define Get_user(a,b) get_user(a,b)
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#endif
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/* ************************************************************** */
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/* * End of compatibility section.. * */
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/* ************************************************************** */
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#ifndef TWO_ZERO
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#include <asm/uaccess.h>
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#endif
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#include "specialix_io8.h"
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#include "cd1865.h"
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/* Configurable options: */
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/* Am I paranoid or not ? ;-) */
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#define SPECIALIX_PARANOIA_CHECK
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/* Do I trust the IRQ from the card? (enabeling it doesn't seem to help)
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When the IRQ routine leaves the chip in a state that is keeps on
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requiring attention, the timer doesn't help either. */
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#undef SPECIALIX_TIMER
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/*
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* The following defines are mostly for testing purposes. But if you need
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* some nice reporting in your syslog, you can define them also.
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*/
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#undef SX_REPORT_FIFO
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#undef SX_REPORT_OVERRUN
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#ifdef CONFIG_SPECIALIX_RTSCTS
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#define SX_CRTSCTS(bla) 1
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#else
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#define SX_CRTSCTS(tty) C_CRTSCTS(tty)
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#endif
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/* Used to be outb (0xff, 0x80); */
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#define short_pause() udelay (1)
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#define SPECIALIX_LEGAL_FLAGS \
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(ASYNC_HUP_NOTIFY | ASYNC_SAK | ASYNC_SPLIT_TERMIOS | \
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ASYNC_SPD_HI | ASYNC_SPEED_VHI | ASYNC_SESSION_LOCKOUT | \
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ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP)
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#ifndef MIN
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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DECLARE_TASK_QUEUE(tq_specialix);
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#define SPECIALIX_TYPE_NORMAL 1
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#define SPECIALIX_TYPE_CALLOUT 2
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static struct tty_driver specialix_driver, specialix_callout_driver;
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static int specialix_refcount = 0;
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static struct tty_struct * specialix_table[SX_NBOARD * SX_NPORT] = { NULL, };
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static struct termios * specialix_termios[SX_NBOARD * SX_NPORT] = { NULL, };
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static struct termios * specialix_termios_locked[SX_NBOARD * SX_NPORT] = { NULL, };
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static unsigned char * tmp_buf = NULL;
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static struct semaphore tmp_buf_sem = MUTEX;
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static unsigned long baud_table[] = {
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0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
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9600, 19200, 38400, 57600, 115200, 0,
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};
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static struct specialix_board sx_board[SX_NBOARD] = {
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{ 0, SX_IOBASE1, 9, },
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{ 0, SX_IOBASE2, 11, },
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{ 0, SX_IOBASE3, 12, },
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{ 0, SX_IOBASE4, 15, },
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};
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static struct specialix_port sx_port[SX_NBOARD * SX_NPORT] = {
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{ 0, },
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};
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#ifdef SPECIALIX_TIMER
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static struct timer_list missed_irq_timer;
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static void sx_interrupt(int irq, void * dev_id, struct pt_regs * regs);
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#endif
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static inline int sx_paranoia_check(struct specialix_port const * port,
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kdev_t device, const char *routine)
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{
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#ifdef SPECIALIX_PARANOIA_CHECK
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static const char *badmagic =
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KERN_ERR "sx: Warning: bad specialix port magic number for device %s in %s\n";
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static const char *badinfo =
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KERN_ERR "sx: Warning: null specialix port for device %s in %s\n";
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if (!port) {
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printk(badinfo, kdevname(device), routine);
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return 1;
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}
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if (port->magic != SPECIALIX_MAGIC) {
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printk(badmagic, kdevname(device), 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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* Service functions for specialix IO8+ driver.
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*
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*/
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/* Get board number from pointer */
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extern inline int board_No (struct specialix_board * bp)
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{
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return bp - sx_board;
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}
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/* Get port number from pointer */
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extern inline int port_No (struct specialix_port const * port)
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{
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return SX_PORT(port - sx_port);
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}
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/* Get pointer to board from pointer to port */
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extern inline struct specialix_board * port_Board(struct specialix_port const * port)
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{
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return &sx_board[SX_BOARD(port - sx_port)];
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}
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/* Input Byte from CL CD186x register */
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extern inline unsigned char sx_in(struct specialix_board * bp, unsigned short reg)
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{
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bp->reg = reg | 0x80;
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outb (reg | 0x80, bp->base + SX_ADDR_REG);
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return inb (bp->base + SX_DATA_REG);
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}
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/* Output Byte to CL CD186x register */
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extern inline void sx_out(struct specialix_board * bp, unsigned short reg,
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unsigned char val)
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{
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bp->reg = reg | 0x80;
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outb (reg | 0x80, bp->base + SX_ADDR_REG);
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outb (val, bp->base + SX_DATA_REG);
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}
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/* Input Byte from CL CD186x register */
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extern inline unsigned char sx_in_off(struct specialix_board * bp, unsigned short reg)
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{
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bp->reg = reg;
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outb (reg, bp->base + SX_ADDR_REG);
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return inb (bp->base + SX_DATA_REG);
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}
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/* Output Byte to CL CD186x register */
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extern inline void sx_out_off(struct specialix_board * bp, unsigned short reg,
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unsigned char val)
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{
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bp->reg = reg;
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outb (reg, bp->base + SX_ADDR_REG);
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outb (val, bp->base + SX_DATA_REG);
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}
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/* Wait for Channel Command Register ready */
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extern inline void sx_wait_CCR(struct specialix_board * bp)
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{
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unsigned long delay;
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for (delay = SX_CCR_TIMEOUT; delay; delay--)
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if (!sx_in(bp, CD186x_CCR))
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return;
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printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp));
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}
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| 309 |
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| 310 |
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/* Wait for Channel Command Register ready */
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extern inline void sx_wait_CCR_off(struct specialix_board * bp)
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{
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unsigned long delay;
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| 314 |
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| 315 |
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for (delay = SX_CCR_TIMEOUT; delay; delay--)
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if (!sx_in_off(bp, CD186x_CCR))
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return;
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printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp));
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}
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/*
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* specialix IO8+ IO range functions.
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*/
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extern inline int sx_check_io_range(struct specialix_board * bp)
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{
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return check_region (bp->base,
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bp->flags&SX_BOARD_IS_PCI?SX_PCI_IO_SPACE:SX_IO_SPACE);
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}
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extern inline void sx_request_io_range(struct specialix_board * bp)
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| 335 |
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{
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| 336 |
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request_region(bp->base,
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bp->flags&SX_BOARD_IS_PCI?SX_PCI_IO_SPACE:SX_IO_SPACE,
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"specialix IO8+" );
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| 339 |
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}
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extern inline void sx_release_io_range(struct specialix_board * bp)
|
| 343 |
|
|
{
|
| 344 |
|
|
release_region(bp->base,
|
| 345 |
|
|
bp->flags&SX_BOARD_IS_PCI?SX_PCI_IO_SPACE:SX_IO_SPACE);
|
| 346 |
|
|
}
|
| 347 |
|
|
|
| 348 |
|
|
|
| 349 |
|
|
/* Must be called with enabled interrupts */
|
| 350 |
|
|
/* Ugly. Don't use this for anything else than initialization code */
|
| 351 |
|
|
extern inline void sx_long_delay(unsigned long delay)
|
| 352 |
|
|
{
|
| 353 |
|
|
unsigned long i;
|
| 354 |
|
|
|
| 355 |
|
|
for (i = jiffies + delay; i > jiffies; ) ;
|
| 356 |
|
|
}
|
| 357 |
|
|
|
| 358 |
|
|
|
| 359 |
|
|
|
| 360 |
|
|
/* Set the IRQ using the RTS lines that run to the PAL on the board.... */
|
| 361 |
|
|
int sx_set_irq ( struct specialix_board *bp)
|
| 362 |
|
|
{
|
| 363 |
|
|
int virq;
|
| 364 |
|
|
int i;
|
| 365 |
|
|
|
| 366 |
|
|
if (bp->flags & SX_BOARD_IS_PCI)
|
| 367 |
|
|
return 1;
|
| 368 |
|
|
switch (bp->irq) {
|
| 369 |
|
|
/* In the same order as in the docs... */
|
| 370 |
|
|
case 15: virq = 0;break;
|
| 371 |
|
|
case 12: virq = 1;break;
|
| 372 |
|
|
case 11: virq = 2;break;
|
| 373 |
|
|
case 9: virq = 3;break;
|
| 374 |
|
|
default: printk (KERN_ERR "Speclialix: cannot set irq to %d.\n", bp->irq);
|
| 375 |
|
|
return 0;
|
| 376 |
|
|
}
|
| 377 |
|
|
|
| 378 |
|
|
for (i=0;i<2;i++) {
|
| 379 |
|
|
sx_out(bp, CD186x_CAR, i);
|
| 380 |
|
|
sx_out(bp, CD186x_MSVRTS, ((virq >> i) & 0x1)? MSVR_RTS:0);
|
| 381 |
|
|
}
|
| 382 |
|
|
return 1;
|
| 383 |
|
|
}
|
| 384 |
|
|
|
| 385 |
|
|
|
| 386 |
|
|
/* Reset and setup CD186x chip */
|
| 387 |
|
|
static int sx_init_CD186x(struct specialix_board * bp)
|
| 388 |
|
|
{
|
| 389 |
|
|
unsigned long flags;
|
| 390 |
|
|
int scaler;
|
| 391 |
|
|
int rv = 1;
|
| 392 |
|
|
|
| 393 |
|
|
save_flags(flags); cli();
|
| 394 |
|
|
|
| 395 |
|
|
sx_wait_CCR_off(bp); /* Wait for CCR ready */
|
| 396 |
|
|
sx_out_off(bp, CD186x_CCR, CCR_HARDRESET); /* Reset CD186x chip */
|
| 397 |
|
|
sti();
|
| 398 |
|
|
sx_long_delay(HZ/20); /* Delay 0.05 sec */
|
| 399 |
|
|
cli();
|
| 400 |
|
|
sx_out_off(bp, CD186x_GIVR, SX_ID); /* Set ID for this chip */
|
| 401 |
|
|
sx_out_off(bp, CD186x_GICR, 0); /* Clear all bits */
|
| 402 |
|
|
sx_out_off(bp, CD186x_PILR1, SX_ACK_MINT); /* Prio for modem intr */
|
| 403 |
|
|
sx_out_off(bp, CD186x_PILR2, SX_ACK_TINT); /* Prio for transmitter intr */
|
| 404 |
|
|
sx_out_off(bp, CD186x_PILR3, SX_ACK_RINT); /* Prio for receiver intr */
|
| 405 |
|
|
/* Set RegAckEn */
|
| 406 |
|
|
sx_out_off(bp, CD186x_SRCR, sx_in (bp, CD186x_SRCR) | SRCR_REGACKEN);
|
| 407 |
|
|
|
| 408 |
|
|
/* Setting up prescaler. We need 4 ticks per 1 ms */
|
| 409 |
|
|
scaler = SX_OSCFREQ/SPECIALIX_TPS;
|
| 410 |
|
|
|
| 411 |
|
|
sx_out_off(bp, CD186x_PPRH, scaler >> 8);
|
| 412 |
|
|
sx_out_off(bp, CD186x_PPRL, scaler & 0xff);
|
| 413 |
|
|
|
| 414 |
|
|
if (!sx_set_irq (bp)) {
|
| 415 |
|
|
/* Figure out how to pass this along... */
|
| 416 |
|
|
printk (KERN_ERR "Cannot set irq to %d.\n", bp->irq);
|
| 417 |
|
|
rv = 0;
|
| 418 |
|
|
}
|
| 419 |
|
|
|
| 420 |
|
|
restore_flags(flags);
|
| 421 |
|
|
return rv;
|
| 422 |
|
|
}
|
| 423 |
|
|
|
| 424 |
|
|
|
| 425 |
|
|
int read_cross_byte (struct specialix_board *bp, int reg, int bit)
|
| 426 |
|
|
{
|
| 427 |
|
|
int i;
|
| 428 |
|
|
int t;
|
| 429 |
|
|
|
| 430 |
|
|
for (i=0, t=0;i<8;i++) {
|
| 431 |
|
|
sx_out_off (bp, CD186x_CAR, i);
|
| 432 |
|
|
if (sx_in_off (bp, reg) & bit)
|
| 433 |
|
|
t |= 1 << i;
|
| 434 |
|
|
}
|
| 435 |
|
|
return t;
|
| 436 |
|
|
}
|
| 437 |
|
|
|
| 438 |
|
|
|
| 439 |
|
|
#ifdef SPECIALIX_TIMER
|
| 440 |
|
|
void missed_irq (unsigned long data)
|
| 441 |
|
|
{
|
| 442 |
|
|
if (sx_in ((struct specialix_board *)data, CD186x_SRSR) &
|
| 443 |
|
|
(SRSR_RREQint |
|
| 444 |
|
|
SRSR_TREQint |
|
| 445 |
|
|
SRSR_MREQint)) {
|
| 446 |
|
|
printk (KERN_INFO "Missed interrupt... Calling int from timer. \n");
|
| 447 |
|
|
sx_interrupt (((struct specialix_board *)data)->irq,
|
| 448 |
|
|
NULL, NULL);
|
| 449 |
|
|
}
|
| 450 |
|
|
missed_irq_timer.expires = jiffies + HZ;
|
| 451 |
|
|
add_timer (&missed_irq_timer);
|
| 452 |
|
|
}
|
| 453 |
|
|
#endif
|
| 454 |
|
|
|
| 455 |
|
|
|
| 456 |
|
|
|
| 457 |
|
|
/* Main probing routine, also sets irq. */
|
| 458 |
|
|
static int sx_probe(struct specialix_board *bp)
|
| 459 |
|
|
{
|
| 460 |
|
|
unsigned char val1, val2;
|
| 461 |
|
|
#if 0
|
| 462 |
|
|
int irqs = 0;
|
| 463 |
|
|
int retries;
|
| 464 |
|
|
#endif
|
| 465 |
|
|
int rev;
|
| 466 |
|
|
int chip;
|
| 467 |
|
|
|
| 468 |
|
|
if (sx_check_io_range(bp))
|
| 469 |
|
|
return 1;
|
| 470 |
|
|
|
| 471 |
|
|
/* Are the I/O ports here ? */
|
| 472 |
|
|
sx_out_off(bp, CD186x_PPRL, 0x5a);
|
| 473 |
|
|
short_pause ();
|
| 474 |
|
|
val1 = sx_in_off(bp, CD186x_PPRL);
|
| 475 |
|
|
|
| 476 |
|
|
sx_out_off(bp, CD186x_PPRL, 0xa5);
|
| 477 |
|
|
short_pause ();
|
| 478 |
|
|
val2 = sx_in_off(bp, CD186x_PPRL);
|
| 479 |
|
|
|
| 480 |
|
|
|
| 481 |
|
|
if ((val1 != 0x5a) || (val2 != 0xa5)) {
|
| 482 |
|
|
printk(KERN_INFO "sx%d: specialix IO8+ Board at 0x%03x not found.\n",
|
| 483 |
|
|
board_No(bp), bp->base);
|
| 484 |
|
|
return 1;
|
| 485 |
|
|
}
|
| 486 |
|
|
|
| 487 |
|
|
/* Check the DSR lines that Specialix uses as board
|
| 488 |
|
|
identification */
|
| 489 |
|
|
val1 = read_cross_byte (bp, CD186x_MSVR, MSVR_DSR);
|
| 490 |
|
|
val2 = read_cross_byte (bp, CD186x_MSVR, MSVR_RTS);
|
| 491 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 492 |
|
|
printk (KERN_DEBUG "sx%d: DSR lines are: %02x, rts lines are: %02x\n",
|
| 493 |
|
|
board_No(bp), val1, val2);
|
| 494 |
|
|
#endif
|
| 495 |
|
|
/* They managed to switch the bit order between the docs and
|
| 496 |
|
|
the IO8+ card. The new PCI card now conforms to old docs.
|
| 497 |
|
|
They changed the PCI docs to reflect the situation on the
|
| 498 |
|
|
old card. */
|
| 499 |
|
|
val2 = (bp->flags & SX_BOARD_IS_PCI)?0x4d : 0xb2;
|
| 500 |
|
|
if (val1 != val2) {
|
| 501 |
|
|
printk(KERN_INFO "sx%d: specialix IO8+ ID %02x at 0x%03x not found (%02x).\n",
|
| 502 |
|
|
board_No(bp), val2, bp->base, val1);
|
| 503 |
|
|
return 1;
|
| 504 |
|
|
}
|
| 505 |
|
|
|
| 506 |
|
|
|
| 507 |
|
|
#if 0
|
| 508 |
|
|
/* It's time to find IRQ for this board */
|
| 509 |
|
|
for (retries = 0; retries < 5 && irqs <= 0; retries++) {
|
| 510 |
|
|
irqs = probe_irq_on();
|
| 511 |
|
|
sx_init_CD186x(bp); /* Reset CD186x chip */
|
| 512 |
|
|
sx_out(bp, CD186x_CAR, 2); /* Select port 2 */
|
| 513 |
|
|
sx_wait_CCR(bp);
|
| 514 |
|
|
sx_out(bp, CD186x_CCR, CCR_TXEN); /* Enable transmitter */
|
| 515 |
|
|
sx_out(bp, CD186x_IER, IER_TXRDY); /* Enable tx empty intr */
|
| 516 |
|
|
sx_long_delay(HZ/20);
|
| 517 |
|
|
irqs = probe_irq_off(irqs);
|
| 518 |
|
|
|
| 519 |
|
|
#if SPECIALIX_DEBUG > 2
|
| 520 |
|
|
printk (KERN_DEBUG "SRSR = %02x, ", sx_in(bp, CD186x_SRSR));
|
| 521 |
|
|
printk ( "TRAR = %02x, ", sx_in(bp, CD186x_TRAR));
|
| 522 |
|
|
printk ( "GIVR = %02x, ", sx_in(bp, CD186x_GIVR));
|
| 523 |
|
|
printk ( "GICR = %02x, ", sx_in(bp, CD186x_GICR));
|
| 524 |
|
|
printk ( "\n");
|
| 525 |
|
|
#endif
|
| 526 |
|
|
/* Reset CD186x again */
|
| 527 |
|
|
if (!sx_init_CD186x(bp)) {
|
| 528 |
|
|
/* Hmmm. This is dead code anyway. */
|
| 529 |
|
|
}
|
| 530 |
|
|
#if SPECIALIX_DEBUG > 2
|
| 531 |
|
|
printk (KERN_DEBUG "val1 = %02x, val2 = %02x, val3 = %02x.\n",
|
| 532 |
|
|
val1, val2, val3);
|
| 533 |
|
|
#endif
|
| 534 |
|
|
|
| 535 |
|
|
}
|
| 536 |
|
|
|
| 537 |
|
|
#if 0
|
| 538 |
|
|
if (irqs <= 0) {
|
| 539 |
|
|
printk(KERN_ERR "sx%d: Can't find IRQ for specialix IO8+ board at 0x%03x.\n",
|
| 540 |
|
|
board_No(bp), bp->base);
|
| 541 |
|
|
return 1;
|
| 542 |
|
|
}
|
| 543 |
|
|
#endif
|
| 544 |
|
|
printk (KERN_INFO "Started with irq=%d, but now have irq=%d.\n", bp->irq, irqs);
|
| 545 |
|
|
if (irqs > 0)
|
| 546 |
|
|
bp->irq = irqs;
|
| 547 |
|
|
#endif
|
| 548 |
|
|
/* Reset CD186x again */
|
| 549 |
|
|
if (!sx_init_CD186x(bp)) {
|
| 550 |
|
|
return -EIO;
|
| 551 |
|
|
}
|
| 552 |
|
|
|
| 553 |
|
|
sx_request_io_range(bp);
|
| 554 |
|
|
bp->flags |= SX_BOARD_PRESENT;
|
| 555 |
|
|
|
| 556 |
|
|
/* Chip revcode pkgtype
|
| 557 |
|
|
GFRCR SRCR bit 7
|
| 558 |
|
|
CD180 rev B 0x81 0
|
| 559 |
|
|
CD180 rev C 0x82 0
|
| 560 |
|
|
CD1864 rev A 0x82 1
|
| 561 |
|
|
CD1865 rev A 0x83 1 -- Do not use!!! Does not work.
|
| 562 |
|
|
CD1865 rev B 0x84 1
|
| 563 |
|
|
-- Thanks to Gwen Wang, Cirrus Logic.
|
| 564 |
|
|
*/
|
| 565 |
|
|
|
| 566 |
|
|
switch (sx_in_off(bp, CD186x_GFRCR)) {
|
| 567 |
|
|
case 0x82:chip = 1864;rev='A';break;
|
| 568 |
|
|
case 0x83:chip = 1865;rev='A';break;
|
| 569 |
|
|
case 0x84:chip = 1865;rev='B';break;
|
| 570 |
|
|
case 0x85:chip = 1865;rev='C';break; /* Does not exist at this time */
|
| 571 |
|
|
default:chip=-1;rev='x';
|
| 572 |
|
|
}
|
| 573 |
|
|
|
| 574 |
|
|
#if SPECIALIX_DEBUG > 2
|
| 575 |
|
|
printk (KERN_DEBUG " GFCR = 0x%02x\n", sx_in_off(bp, CD186x_GFRCR) );
|
| 576 |
|
|
#endif
|
| 577 |
|
|
|
| 578 |
|
|
#ifdef SPECIALIX_TIMER
|
| 579 |
|
|
init_timer (&missed_irq_timer);
|
| 580 |
|
|
missed_irq_timer.function = missed_irq;
|
| 581 |
|
|
missed_irq_timer.data = (unsigned long) bp;
|
| 582 |
|
|
missed_irq_timer.expires = jiffies + HZ;
|
| 583 |
|
|
add_timer (&missed_irq_timer);
|
| 584 |
|
|
#endif
|
| 585 |
|
|
|
| 586 |
|
|
printk(KERN_INFO"sx%d: specialix IO8+ board detected at 0x%03x, IRQ %d, CD%d Rev. %c.\n",
|
| 587 |
|
|
board_No(bp),
|
| 588 |
|
|
bp->base, bp->irq,
|
| 589 |
|
|
chip, rev);
|
| 590 |
|
|
|
| 591 |
|
|
return 0;
|
| 592 |
|
|
}
|
| 593 |
|
|
|
| 594 |
|
|
/*
|
| 595 |
|
|
*
|
| 596 |
|
|
* Interrupt processing routines.
|
| 597 |
|
|
* */
|
| 598 |
|
|
|
| 599 |
|
|
extern inline void sx_mark_event(struct specialix_port * port, int event)
|
| 600 |
|
|
{
|
| 601 |
|
|
/*
|
| 602 |
|
|
* I'm not quite happy with current scheme all serial
|
| 603 |
|
|
* drivers use their own BH routine.
|
| 604 |
|
|
* It seems this easily can be done with one BH routine
|
| 605 |
|
|
* serving for all serial drivers.
|
| 606 |
|
|
* For now I must introduce another one - SPECIALIX_BH.
|
| 607 |
|
|
* Still hope this will be changed in near future.
|
| 608 |
|
|
* -- Dmitry.
|
| 609 |
|
|
*/
|
| 610 |
|
|
set_bit(event, &port->event);
|
| 611 |
|
|
queue_task(&port->tqueue, &tq_specialix);
|
| 612 |
|
|
mark_bh(SPECIALIX_BH);
|
| 613 |
|
|
}
|
| 614 |
|
|
|
| 615 |
|
|
|
| 616 |
|
|
extern inline struct specialix_port * sx_get_port(struct specialix_board * bp,
|
| 617 |
|
|
unsigned char const * what)
|
| 618 |
|
|
{
|
| 619 |
|
|
unsigned char channel;
|
| 620 |
|
|
struct specialix_port * port;
|
| 621 |
|
|
|
| 622 |
|
|
channel = sx_in(bp, CD186x_GICR) >> GICR_CHAN_OFF;
|
| 623 |
|
|
if (channel < CD186x_NCH) {
|
| 624 |
|
|
port = &sx_port[board_No(bp) * SX_NPORT + channel];
|
| 625 |
|
|
if (port->flags & ASYNC_INITIALIZED) {
|
| 626 |
|
|
return port;
|
| 627 |
|
|
}
|
| 628 |
|
|
}
|
| 629 |
|
|
printk(KERN_INFO "sx%d: %s interrupt from invalid port %d\n",
|
| 630 |
|
|
board_No(bp), what, channel);
|
| 631 |
|
|
return NULL;
|
| 632 |
|
|
}
|
| 633 |
|
|
|
| 634 |
|
|
|
| 635 |
|
|
extern inline void sx_receive_exc(struct specialix_board * bp)
|
| 636 |
|
|
{
|
| 637 |
|
|
struct specialix_port *port;
|
| 638 |
|
|
struct tty_struct *tty;
|
| 639 |
|
|
unsigned char status;
|
| 640 |
|
|
unsigned char ch;
|
| 641 |
|
|
|
| 642 |
|
|
if (!(port = sx_get_port(bp, "Receive")))
|
| 643 |
|
|
return;
|
| 644 |
|
|
|
| 645 |
|
|
tty = port->tty;
|
| 646 |
|
|
if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
|
| 647 |
|
|
printk(KERN_INFO "sx%d: port %d: Working around flip buffer overflow.\n",
|
| 648 |
|
|
board_No(bp), port_No(port));
|
| 649 |
|
|
return;
|
| 650 |
|
|
}
|
| 651 |
|
|
|
| 652 |
|
|
#ifdef SX_REPORT_OVERRUN
|
| 653 |
|
|
status = sx_in(bp, CD186x_RCSR);
|
| 654 |
|
|
if (status & RCSR_OE) {
|
| 655 |
|
|
port->overrun++;
|
| 656 |
|
|
#if SPECIALIX_DEBUG
|
| 657 |
|
|
printk(KERN_DEBUG "sx%d: port %d: Overrun. Total %ld overruns.\n",
|
| 658 |
|
|
board_No(bp), port_No(port), port->overrun);
|
| 659 |
|
|
#endif
|
| 660 |
|
|
}
|
| 661 |
|
|
status &= port->mark_mask;
|
| 662 |
|
|
#else
|
| 663 |
|
|
status = sx_in(bp, CD186x_RCSR) & port->mark_mask;
|
| 664 |
|
|
#endif
|
| 665 |
|
|
ch = sx_in(bp, CD186x_RDR);
|
| 666 |
|
|
if (!status) {
|
| 667 |
|
|
return;
|
| 668 |
|
|
}
|
| 669 |
|
|
if (status & RCSR_TOUT) {
|
| 670 |
|
|
printk(KERN_INFO "sx%d: port %d: Receiver timeout. Hardware problems ?\n",
|
| 671 |
|
|
board_No(bp), port_No(port));
|
| 672 |
|
|
return;
|
| 673 |
|
|
|
| 674 |
|
|
} else if (status & RCSR_BREAK) {
|
| 675 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 676 |
|
|
printk(KERN_DEBUG "sx%d: port %d: Handling break...\n",
|
| 677 |
|
|
board_No(bp), port_No(port));
|
| 678 |
|
|
#endif
|
| 679 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
|
| 680 |
|
|
if (port->flags & ASYNC_SAK)
|
| 681 |
|
|
do_SAK(tty);
|
| 682 |
|
|
|
| 683 |
|
|
} else if (status & RCSR_PE)
|
| 684 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_PARITY;
|
| 685 |
|
|
|
| 686 |
|
|
else if (status & RCSR_FE)
|
| 687 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_FRAME;
|
| 688 |
|
|
|
| 689 |
|
|
else if (status & RCSR_OE)
|
| 690 |
|
|
*tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
|
| 691 |
|
|
|
| 692 |
|
|
else
|
| 693 |
|
|
*tty->flip.flag_buf_ptr++ = 0;
|
| 694 |
|
|
|
| 695 |
|
|
*tty->flip.char_buf_ptr++ = ch;
|
| 696 |
|
|
tty->flip.count++;
|
| 697 |
|
|
queue_task(&tty->flip.tqueue, &tq_timer);
|
| 698 |
|
|
}
|
| 699 |
|
|
|
| 700 |
|
|
|
| 701 |
|
|
extern inline void sx_receive(struct specialix_board * bp)
|
| 702 |
|
|
{
|
| 703 |
|
|
struct specialix_port *port;
|
| 704 |
|
|
struct tty_struct *tty;
|
| 705 |
|
|
unsigned char count;
|
| 706 |
|
|
|
| 707 |
|
|
if (!(port = sx_get_port(bp, "Receive")))
|
| 708 |
|
|
return;
|
| 709 |
|
|
|
| 710 |
|
|
tty = port->tty;
|
| 711 |
|
|
|
| 712 |
|
|
count = sx_in(bp, CD186x_RDCR);
|
| 713 |
|
|
|
| 714 |
|
|
#ifdef SX_REPORT_FIFO
|
| 715 |
|
|
port->hits[count > 8 ? 9 : count]++;
|
| 716 |
|
|
#endif
|
| 717 |
|
|
|
| 718 |
|
|
while (count--) {
|
| 719 |
|
|
if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
|
| 720 |
|
|
printk(KERN_INFO "sx%d: port %d: Working around flip buffer overflow.\n",
|
| 721 |
|
|
board_No(bp), port_No(port));
|
| 722 |
|
|
break;
|
| 723 |
|
|
}
|
| 724 |
|
|
*tty->flip.char_buf_ptr++ = sx_in(bp, CD186x_RDR);
|
| 725 |
|
|
*tty->flip.flag_buf_ptr++ = 0;
|
| 726 |
|
|
tty->flip.count++;
|
| 727 |
|
|
}
|
| 728 |
|
|
queue_task(&tty->flip.tqueue, &tq_timer);
|
| 729 |
|
|
}
|
| 730 |
|
|
|
| 731 |
|
|
|
| 732 |
|
|
extern inline void sx_transmit(struct specialix_board * bp)
|
| 733 |
|
|
{
|
| 734 |
|
|
struct specialix_port *port;
|
| 735 |
|
|
struct tty_struct *tty;
|
| 736 |
|
|
unsigned char count;
|
| 737 |
|
|
|
| 738 |
|
|
|
| 739 |
|
|
if (!(port = sx_get_port(bp, "Transmit")))
|
| 740 |
|
|
return;
|
| 741 |
|
|
|
| 742 |
|
|
tty = port->tty;
|
| 743 |
|
|
|
| 744 |
|
|
if (port->IER & IER_TXEMPTY) {
|
| 745 |
|
|
/* FIFO drained */
|
| 746 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 747 |
|
|
port->IER &= ~IER_TXEMPTY;
|
| 748 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 749 |
|
|
return;
|
| 750 |
|
|
}
|
| 751 |
|
|
|
| 752 |
|
|
if ((port->xmit_cnt <= 0 && !port->break_length)
|
| 753 |
|
|
|| tty->stopped || tty->hw_stopped) {
|
| 754 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 755 |
|
|
port->IER &= ~IER_TXRDY;
|
| 756 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 757 |
|
|
return;
|
| 758 |
|
|
}
|
| 759 |
|
|
|
| 760 |
|
|
if (port->break_length) {
|
| 761 |
|
|
if (port->break_length > 0) {
|
| 762 |
|
|
if (port->COR2 & COR2_ETC) {
|
| 763 |
|
|
sx_out(bp, CD186x_TDR, CD186x_C_ESC);
|
| 764 |
|
|
sx_out(bp, CD186x_TDR, CD186x_C_SBRK);
|
| 765 |
|
|
port->COR2 &= ~COR2_ETC;
|
| 766 |
|
|
}
|
| 767 |
|
|
count = MIN(port->break_length, 0xff);
|
| 768 |
|
|
sx_out(bp, CD186x_TDR, CD186x_C_ESC);
|
| 769 |
|
|
sx_out(bp, CD186x_TDR, CD186x_C_DELAY);
|
| 770 |
|
|
sx_out(bp, CD186x_TDR, count);
|
| 771 |
|
|
if (!(port->break_length -= count))
|
| 772 |
|
|
port->break_length--;
|
| 773 |
|
|
} else {
|
| 774 |
|
|
sx_out(bp, CD186x_TDR, CD186x_C_ESC);
|
| 775 |
|
|
sx_out(bp, CD186x_TDR, CD186x_C_EBRK);
|
| 776 |
|
|
sx_out(bp, CD186x_COR2, port->COR2);
|
| 777 |
|
|
sx_wait_CCR(bp);
|
| 778 |
|
|
sx_out(bp, CD186x_CCR, CCR_CORCHG2);
|
| 779 |
|
|
port->break_length = 0;
|
| 780 |
|
|
}
|
| 781 |
|
|
return;
|
| 782 |
|
|
}
|
| 783 |
|
|
|
| 784 |
|
|
count = CD186x_NFIFO;
|
| 785 |
|
|
do {
|
| 786 |
|
|
sx_out(bp, CD186x_TDR, port->xmit_buf[port->xmit_tail++]);
|
| 787 |
|
|
port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1);
|
| 788 |
|
|
if (--port->xmit_cnt <= 0)
|
| 789 |
|
|
break;
|
| 790 |
|
|
} while (--count > 0);
|
| 791 |
|
|
|
| 792 |
|
|
if (port->xmit_cnt <= 0) {
|
| 793 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 794 |
|
|
port->IER &= ~IER_TXRDY;
|
| 795 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 796 |
|
|
}
|
| 797 |
|
|
if (port->xmit_cnt <= port->wakeup_chars)
|
| 798 |
|
|
sx_mark_event(port, RS_EVENT_WRITE_WAKEUP);
|
| 799 |
|
|
}
|
| 800 |
|
|
|
| 801 |
|
|
|
| 802 |
|
|
extern inline void sx_check_modem(struct specialix_board * bp)
|
| 803 |
|
|
{
|
| 804 |
|
|
struct specialix_port *port;
|
| 805 |
|
|
struct tty_struct *tty;
|
| 806 |
|
|
unsigned char mcr;
|
| 807 |
|
|
|
| 808 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 809 |
|
|
printk (KERN_DEBUG "Modem intr. ");
|
| 810 |
|
|
#endif
|
| 811 |
|
|
if (!(port = sx_get_port(bp, "Modem")))
|
| 812 |
|
|
return;
|
| 813 |
|
|
|
| 814 |
|
|
tty = port->tty;
|
| 815 |
|
|
|
| 816 |
|
|
mcr = sx_in(bp, CD186x_MCR);
|
| 817 |
|
|
printk ("mcr = %02x.\n", mcr);
|
| 818 |
|
|
|
| 819 |
|
|
if ((mcr & MCR_CDCHG)) {
|
| 820 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 821 |
|
|
printk (KERN_DEBUG "CD just changed... ");
|
| 822 |
|
|
#endif
|
| 823 |
|
|
if (sx_in(bp, CD186x_MSVR) & MSVR_CD) {
|
| 824 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 825 |
|
|
printk ( "Waking up guys in open.\n");
|
| 826 |
|
|
#endif
|
| 827 |
|
|
wake_up_interruptible(&port->open_wait);
|
| 828 |
|
|
}
|
| 829 |
|
|
else if (!((port->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 830 |
|
|
(port->flags & ASYNC_CALLOUT_NOHUP))) {
|
| 831 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 832 |
|
|
printk ( "Sending HUP.\n");
|
| 833 |
|
|
#endif
|
| 834 |
|
|
queue_task(&port->tqueue_hangup,
|
| 835 |
|
|
&tq_scheduler);
|
| 836 |
|
|
} else {
|
| 837 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 838 |
|
|
printk ( "Don't need to send HUP.\n");
|
| 839 |
|
|
#endif
|
| 840 |
|
|
}
|
| 841 |
|
|
}
|
| 842 |
|
|
|
| 843 |
|
|
#ifdef SPECIALIX_BRAIN_DAMAGED_CTS
|
| 844 |
|
|
if (mcr & MCR_CTSCHG) {
|
| 845 |
|
|
if (sx_in(bp, CD186x_MSVR) & MSVR_CTS) {
|
| 846 |
|
|
tty->hw_stopped = 0;
|
| 847 |
|
|
port->IER |= IER_TXRDY;
|
| 848 |
|
|
if (port->xmit_cnt <= port->wakeup_chars)
|
| 849 |
|
|
sx_mark_event(port, RS_EVENT_WRITE_WAKEUP);
|
| 850 |
|
|
} else {
|
| 851 |
|
|
tty->hw_stopped = 1;
|
| 852 |
|
|
port->IER &= ~IER_TXRDY;
|
| 853 |
|
|
}
|
| 854 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 855 |
|
|
}
|
| 856 |
|
|
if (mcr & MCR_DSSXHG) {
|
| 857 |
|
|
if (sx_in(bp, CD186x_MSVR) & MSVR_DSR) {
|
| 858 |
|
|
tty->hw_stopped = 0;
|
| 859 |
|
|
port->IER |= IER_TXRDY;
|
| 860 |
|
|
if (port->xmit_cnt <= port->wakeup_chars)
|
| 861 |
|
|
sx_mark_event(port, RS_EVENT_WRITE_WAKEUP);
|
| 862 |
|
|
} else {
|
| 863 |
|
|
tty->hw_stopped = 1;
|
| 864 |
|
|
port->IER &= ~IER_TXRDY;
|
| 865 |
|
|
}
|
| 866 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 867 |
|
|
}
|
| 868 |
|
|
#endif /* SPECIALIX_BRAIN_DAMAGED_CTS */
|
| 869 |
|
|
|
| 870 |
|
|
/* Clear change bits */
|
| 871 |
|
|
sx_out(bp, CD186x_MCR, 0);
|
| 872 |
|
|
}
|
| 873 |
|
|
|
| 874 |
|
|
|
| 875 |
|
|
/* The main interrupt processing routine */
|
| 876 |
|
|
static void sx_interrupt(int irq, void * dev_id, struct pt_regs * regs)
|
| 877 |
|
|
{
|
| 878 |
|
|
unsigned char status;
|
| 879 |
|
|
unsigned char ack;
|
| 880 |
|
|
struct specialix_board *bp;
|
| 881 |
|
|
unsigned long loop = 0;
|
| 882 |
|
|
int saved_reg;
|
| 883 |
|
|
|
| 884 |
|
|
bp = dev_id;
|
| 885 |
|
|
|
| 886 |
|
|
if (!bp || !(bp->flags & SX_BOARD_ACTIVE)) {
|
| 887 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 888 |
|
|
printk (KERN_DEBUG "sx: False interrupt. irq %d.\n", irq);
|
| 889 |
|
|
#endif
|
| 890 |
|
|
return;
|
| 891 |
|
|
}
|
| 892 |
|
|
|
| 893 |
|
|
saved_reg = bp->reg;
|
| 894 |
|
|
|
| 895 |
|
|
while ((++loop < 16) && (status = (sx_in(bp, CD186x_SRSR) &
|
| 896 |
|
|
(SRSR_RREQint |
|
| 897 |
|
|
SRSR_TREQint |
|
| 898 |
|
|
SRSR_MREQint)))) {
|
| 899 |
|
|
if (status & SRSR_RREQint) {
|
| 900 |
|
|
ack = sx_in(bp, CD186x_RRAR);
|
| 901 |
|
|
|
| 902 |
|
|
if (ack == (SX_ID | GIVR_IT_RCV))
|
| 903 |
|
|
sx_receive(bp);
|
| 904 |
|
|
else if (ack == (SX_ID | GIVR_IT_REXC))
|
| 905 |
|
|
sx_receive_exc(bp);
|
| 906 |
|
|
else
|
| 907 |
|
|
printk(KERN_ERR "sx%d: Bad receive ack 0x%02x.\n",
|
| 908 |
|
|
board_No(bp), ack);
|
| 909 |
|
|
|
| 910 |
|
|
} else if (status & SRSR_TREQint) {
|
| 911 |
|
|
ack = sx_in(bp, CD186x_TRAR);
|
| 912 |
|
|
|
| 913 |
|
|
if (ack == (SX_ID | GIVR_IT_TX))
|
| 914 |
|
|
sx_transmit(bp);
|
| 915 |
|
|
else
|
| 916 |
|
|
printk(KERN_ERR "sx%d: Bad transmit ack 0x%02x.\n",
|
| 917 |
|
|
board_No(bp), ack);
|
| 918 |
|
|
} else if (status & SRSR_MREQint) {
|
| 919 |
|
|
ack = sx_in(bp, CD186x_MRAR);
|
| 920 |
|
|
|
| 921 |
|
|
if (ack == (SX_ID | GIVR_IT_MODEM))
|
| 922 |
|
|
sx_check_modem(bp);
|
| 923 |
|
|
else
|
| 924 |
|
|
printk(KERN_ERR "sx%d: Bad modem ack 0x%02x.\n",
|
| 925 |
|
|
board_No(bp), ack);
|
| 926 |
|
|
|
| 927 |
|
|
}
|
| 928 |
|
|
|
| 929 |
|
|
sx_out(bp, CD186x_EOIR, 0); /* Mark end of interrupt */
|
| 930 |
|
|
}
|
| 931 |
|
|
bp->reg = saved_reg;
|
| 932 |
|
|
outb (bp->reg, bp->base + SX_ADDR_REG);
|
| 933 |
|
|
}
|
| 934 |
|
|
|
| 935 |
|
|
|
| 936 |
|
|
/*
|
| 937 |
|
|
* Routines for open & close processing.
|
| 938 |
|
|
*/
|
| 939 |
|
|
|
| 940 |
|
|
void turn_ints_off (struct specialix_board *bp)
|
| 941 |
|
|
{
|
| 942 |
|
|
if (bp->flags & SX_BOARD_IS_PCI) {
|
| 943 |
|
|
/* This was intended for enabeling the interrupt on the
|
| 944 |
|
|
* PCI card. However it seems that it's already enabled
|
| 945 |
|
|
* and as PCI interrupts can be shared, there is no real
|
| 946 |
|
|
* reason to have to turn it off. */
|
| 947 |
|
|
}
|
| 948 |
|
|
(void) sx_in_off (bp, 0); /* Turn off interrupts. */
|
| 949 |
|
|
}
|
| 950 |
|
|
|
| 951 |
|
|
void turn_ints_on (struct specialix_board *bp)
|
| 952 |
|
|
{
|
| 953 |
|
|
if (bp->flags & SX_BOARD_IS_PCI) {
|
| 954 |
|
|
/* play with the PCI chip. See comment above */
|
| 955 |
|
|
}
|
| 956 |
|
|
(void) sx_in (bp, 0); /* Turn ON interrupts. */
|
| 957 |
|
|
}
|
| 958 |
|
|
|
| 959 |
|
|
|
| 960 |
|
|
/* Called with disabled interrupts */
|
| 961 |
|
|
extern inline int sx_setup_board(struct specialix_board * bp)
|
| 962 |
|
|
{
|
| 963 |
|
|
int error;
|
| 964 |
|
|
|
| 965 |
|
|
if (bp->flags & SX_BOARD_ACTIVE)
|
| 966 |
|
|
return 0;
|
| 967 |
|
|
|
| 968 |
|
|
error = request_irq(bp->irq, sx_interrupt, SA_INTERRUPT, "specialix IO8+", bp);
|
| 969 |
|
|
|
| 970 |
|
|
if (error)
|
| 971 |
|
|
return error;
|
| 972 |
|
|
|
| 973 |
|
|
turn_ints_on (bp);
|
| 974 |
|
|
bp->flags |= SX_BOARD_ACTIVE;
|
| 975 |
|
|
|
| 976 |
|
|
MOD_INC_USE_COUNT;
|
| 977 |
|
|
return 0;
|
| 978 |
|
|
}
|
| 979 |
|
|
|
| 980 |
|
|
|
| 981 |
|
|
/* Called with disabled interrupts */
|
| 982 |
|
|
extern inline void sx_shutdown_board(struct specialix_board *bp)
|
| 983 |
|
|
{
|
| 984 |
|
|
if (!(bp->flags & SX_BOARD_ACTIVE))
|
| 985 |
|
|
return;
|
| 986 |
|
|
|
| 987 |
|
|
bp->flags &= ~SX_BOARD_ACTIVE;
|
| 988 |
|
|
|
| 989 |
|
|
#if SPECIALIX_DEBUG > 2
|
| 990 |
|
|
printk ("Freeing IRQ%d for board %d.\n", bp->irq, board_No (bp));
|
| 991 |
|
|
#endif
|
| 992 |
|
|
free_irq(bp->irq, bp);
|
| 993 |
|
|
|
| 994 |
|
|
turn_ints_off (bp);
|
| 995 |
|
|
|
| 996 |
|
|
MOD_DEC_USE_COUNT;
|
| 997 |
|
|
}
|
| 998 |
|
|
|
| 999 |
|
|
|
| 1000 |
|
|
/*
|
| 1001 |
|
|
* Setting up port characteristics.
|
| 1002 |
|
|
* Must be called with disabled interrupts
|
| 1003 |
|
|
*/
|
| 1004 |
|
|
static void sx_change_speed(struct specialix_board *bp, struct specialix_port *port)
|
| 1005 |
|
|
{
|
| 1006 |
|
|
struct tty_struct *tty;
|
| 1007 |
|
|
unsigned long baud;
|
| 1008 |
|
|
long tmp;
|
| 1009 |
|
|
unsigned char cor1 = 0, cor3 = 0;
|
| 1010 |
|
|
unsigned char mcor1 = 0, mcor2 = 0;
|
| 1011 |
|
|
static int again=0;
|
| 1012 |
|
|
|
| 1013 |
|
|
if (!(tty = port->tty) || !tty->termios)
|
| 1014 |
|
|
return;
|
| 1015 |
|
|
|
| 1016 |
|
|
port->IER = 0;
|
| 1017 |
|
|
port->COR2 = 0;
|
| 1018 |
|
|
/* Select port on the board */
|
| 1019 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 1020 |
|
|
|
| 1021 |
|
|
/* The Specialix board doens't implement the RTS lines.
|
| 1022 |
|
|
They are used to set the IRQ level. Don't touch them. */
|
| 1023 |
|
|
if (SX_CRTSCTS(tty))
|
| 1024 |
|
|
port->MSVR = MSVR_DTR | (sx_in(bp, CD186x_MSVR) & MSVR_RTS);
|
| 1025 |
|
|
else
|
| 1026 |
|
|
port->MSVR = (sx_in(bp, CD186x_MSVR) & MSVR_RTS);
|
| 1027 |
|
|
#ifdef DEBUG_SPECIALIX
|
| 1028 |
|
|
printk (KERN_DEBUG "sx: got MSVR=%02x.\n", port->MSVR);
|
| 1029 |
|
|
#endif
|
| 1030 |
|
|
baud = C_BAUD(tty);
|
| 1031 |
|
|
|
| 1032 |
|
|
if (baud & CBAUDEX) {
|
| 1033 |
|
|
baud &= ~CBAUDEX;
|
| 1034 |
|
|
if (baud < 1 || baud > 2)
|
| 1035 |
|
|
port->tty->termios->c_cflag &= ~CBAUDEX;
|
| 1036 |
|
|
else
|
| 1037 |
|
|
baud += 15;
|
| 1038 |
|
|
}
|
| 1039 |
|
|
if (baud == 15) {
|
| 1040 |
|
|
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
|
| 1041 |
|
|
baud ++;
|
| 1042 |
|
|
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
|
| 1043 |
|
|
baud += 2;
|
| 1044 |
|
|
}
|
| 1045 |
|
|
|
| 1046 |
|
|
|
| 1047 |
|
|
if (!baud_table[baud]) {
|
| 1048 |
|
|
/* Drop DTR & exit */
|
| 1049 |
|
|
#ifdef SPECIALIX_DEBUG
|
| 1050 |
|
|
printk (KERN_DEBUG "Dropping DTR... Hmm....\n");
|
| 1051 |
|
|
#endif
|
| 1052 |
|
|
if (!SX_CRTSCTS (tty)) {
|
| 1053 |
|
|
port -> MSVR &= ~ MSVR_DTR;
|
| 1054 |
|
|
sx_out(bp, CD186x_MSVR, port->MSVR );
|
| 1055 |
|
|
}
|
| 1056 |
|
|
#ifdef DEBUG_SPECIALIX
|
| 1057 |
|
|
else
|
| 1058 |
|
|
printk (KERN_DEBUG "Can't drop DTR: no DTR.\n");
|
| 1059 |
|
|
#endif
|
| 1060 |
|
|
return;
|
| 1061 |
|
|
} else {
|
| 1062 |
|
|
/* Set DTR on */
|
| 1063 |
|
|
if (!SX_CRTSCTS (tty)) {
|
| 1064 |
|
|
port ->MSVR |= MSVR_DTR;
|
| 1065 |
|
|
}
|
| 1066 |
|
|
}
|
| 1067 |
|
|
|
| 1068 |
|
|
/*
|
| 1069 |
|
|
* Now we must calculate some speed depended things
|
| 1070 |
|
|
*/
|
| 1071 |
|
|
|
| 1072 |
|
|
/* Set baud rate for port */
|
| 1073 |
|
|
tmp = (((SX_OSCFREQ + baud_table[baud]/2) / baud_table[baud] +
|
| 1074 |
|
|
CD186x_TPC/2) / CD186x_TPC);
|
| 1075 |
|
|
if ((tmp < 0x10) && (again < jiffies)) {
|
| 1076 |
|
|
again = jiffies + HZ * 60;
|
| 1077 |
|
|
/* Page 48 of version 2.0 of the CL-CD1865 databook */
|
| 1078 |
|
|
if (tmp >= 12) {
|
| 1079 |
|
|
printk (KERN_INFO "sx%d: Baud rate divisor is %ld. \n"
|
| 1080 |
|
|
"Performance degradation is possible.\n"
|
| 1081 |
|
|
"Read specialix.txt for more info.\n",
|
| 1082 |
|
|
port_No (port), tmp);
|
| 1083 |
|
|
} else {
|
| 1084 |
|
|
printk (KERN_INFO "sx%d: Baud rate divisor is %ld. \n"
|
| 1085 |
|
|
"Warning: overstressing Cirrus chip. "
|
| 1086 |
|
|
"This might not work.\n"
|
| 1087 |
|
|
"Read specialix.txt for more info.\n",
|
| 1088 |
|
|
port_No (port), tmp);
|
| 1089 |
|
|
}
|
| 1090 |
|
|
}
|
| 1091 |
|
|
|
| 1092 |
|
|
sx_out(bp, CD186x_RBPRH, (tmp >> 8) & 0xff);
|
| 1093 |
|
|
sx_out(bp, CD186x_TBPRH, (tmp >> 8) & 0xff);
|
| 1094 |
|
|
sx_out(bp, CD186x_RBPRL, tmp & 0xff);
|
| 1095 |
|
|
sx_out(bp, CD186x_TBPRL, tmp & 0xff);
|
| 1096 |
|
|
|
| 1097 |
|
|
baud = (baud_table[baud] + 5) / 10; /* Estimated CPS */
|
| 1098 |
|
|
|
| 1099 |
|
|
/* Two timer ticks seems enough to wakeup something like SLIP driver */
|
| 1100 |
|
|
tmp = ((baud + HZ/2) / HZ) * 2 - CD186x_NFIFO;
|
| 1101 |
|
|
port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ?
|
| 1102 |
|
|
SERIAL_XMIT_SIZE - 1 : tmp);
|
| 1103 |
|
|
|
| 1104 |
|
|
/* Receiver timeout will be transmission time for 1.5 chars */
|
| 1105 |
|
|
tmp = (SPECIALIX_TPS + SPECIALIX_TPS/2 + baud/2) / baud;
|
| 1106 |
|
|
tmp = (tmp > 0xff) ? 0xff : tmp;
|
| 1107 |
|
|
sx_out(bp, CD186x_RTPR, tmp);
|
| 1108 |
|
|
|
| 1109 |
|
|
switch (C_CSIZE(tty)) {
|
| 1110 |
|
|
case CS5:
|
| 1111 |
|
|
cor1 |= COR1_5BITS;
|
| 1112 |
|
|
break;
|
| 1113 |
|
|
case CS6:
|
| 1114 |
|
|
cor1 |= COR1_6BITS;
|
| 1115 |
|
|
break;
|
| 1116 |
|
|
case CS7:
|
| 1117 |
|
|
cor1 |= COR1_7BITS;
|
| 1118 |
|
|
break;
|
| 1119 |
|
|
case CS8:
|
| 1120 |
|
|
cor1 |= COR1_8BITS;
|
| 1121 |
|
|
break;
|
| 1122 |
|
|
}
|
| 1123 |
|
|
|
| 1124 |
|
|
if (C_CSTOPB(tty))
|
| 1125 |
|
|
cor1 |= COR1_2SB;
|
| 1126 |
|
|
|
| 1127 |
|
|
cor1 |= COR1_IGNORE;
|
| 1128 |
|
|
if (C_PARENB(tty)) {
|
| 1129 |
|
|
cor1 |= COR1_NORMPAR;
|
| 1130 |
|
|
if (C_PARODD(tty))
|
| 1131 |
|
|
cor1 |= COR1_ODDP;
|
| 1132 |
|
|
if (I_INPCK(tty))
|
| 1133 |
|
|
cor1 &= ~COR1_IGNORE;
|
| 1134 |
|
|
}
|
| 1135 |
|
|
/* Set marking of some errors */
|
| 1136 |
|
|
port->mark_mask = RCSR_OE | RCSR_TOUT;
|
| 1137 |
|
|
if (I_INPCK(tty))
|
| 1138 |
|
|
port->mark_mask |= RCSR_FE | RCSR_PE;
|
| 1139 |
|
|
if (I_BRKINT(tty) || I_PARMRK(tty))
|
| 1140 |
|
|
port->mark_mask |= RCSR_BREAK;
|
| 1141 |
|
|
if (I_IGNPAR(tty))
|
| 1142 |
|
|
port->mark_mask &= ~(RCSR_FE | RCSR_PE);
|
| 1143 |
|
|
if (I_IGNBRK(tty)) {
|
| 1144 |
|
|
port->mark_mask &= ~RCSR_BREAK;
|
| 1145 |
|
|
if (I_IGNPAR(tty))
|
| 1146 |
|
|
/* Real raw mode. Ignore all */
|
| 1147 |
|
|
port->mark_mask &= ~RCSR_OE;
|
| 1148 |
|
|
}
|
| 1149 |
|
|
/* Enable Hardware Flow Control */
|
| 1150 |
|
|
if (C_CRTSCTS(tty)) {
|
| 1151 |
|
|
#ifdef SPECIALIX_BRAIN_DAMAGED_CTS
|
| 1152 |
|
|
port->IER |= IER_DSR | IER_CTS;
|
| 1153 |
|
|
mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD;
|
| 1154 |
|
|
mcor2 |= MCOR2_DSROD | MCOR2_CTSOD;
|
| 1155 |
|
|
tty->hw_stopped = !(sx_in(bp, CD186x_MSVR) & (MSVR_CTS|MSVR_DSR));
|
| 1156 |
|
|
#else
|
| 1157 |
|
|
port->COR2 |= COR2_CTSAE;
|
| 1158 |
|
|
#endif
|
| 1159 |
|
|
}
|
| 1160 |
|
|
/* Enable Software Flow Control. FIXME: I'm not sure about this */
|
| 1161 |
|
|
/* Some people reported that it works, but I still doubt it */
|
| 1162 |
|
|
if (I_IXON(tty)) {
|
| 1163 |
|
|
port->COR2 |= COR2_TXIBE;
|
| 1164 |
|
|
cor3 |= (COR3_FCT | COR3_SCDE);
|
| 1165 |
|
|
if (I_IXANY(tty))
|
| 1166 |
|
|
port->COR2 |= COR2_IXM;
|
| 1167 |
|
|
sx_out(bp, CD186x_SCHR1, START_CHAR(tty));
|
| 1168 |
|
|
sx_out(bp, CD186x_SCHR2, STOP_CHAR(tty));
|
| 1169 |
|
|
sx_out(bp, CD186x_SCHR3, START_CHAR(tty));
|
| 1170 |
|
|
sx_out(bp, CD186x_SCHR4, STOP_CHAR(tty));
|
| 1171 |
|
|
}
|
| 1172 |
|
|
if (!C_CLOCAL(tty)) {
|
| 1173 |
|
|
/* Enable CD check */
|
| 1174 |
|
|
port->IER |= IER_CD;
|
| 1175 |
|
|
mcor1 |= MCOR1_CDZD;
|
| 1176 |
|
|
mcor2 |= MCOR2_CDOD;
|
| 1177 |
|
|
}
|
| 1178 |
|
|
|
| 1179 |
|
|
if (C_CREAD(tty))
|
| 1180 |
|
|
/* Enable receiver */
|
| 1181 |
|
|
port->IER |= IER_RXD;
|
| 1182 |
|
|
|
| 1183 |
|
|
/* Set input FIFO size (1-8 bytes) */
|
| 1184 |
|
|
cor3 |= SPECIALIX_RXFIFO;
|
| 1185 |
|
|
/* Setting up CD186x channel registers */
|
| 1186 |
|
|
sx_out(bp, CD186x_COR1, cor1);
|
| 1187 |
|
|
sx_out(bp, CD186x_COR2, port->COR2);
|
| 1188 |
|
|
sx_out(bp, CD186x_COR3, cor3);
|
| 1189 |
|
|
/* Make CD186x know about registers change */
|
| 1190 |
|
|
sx_wait_CCR(bp);
|
| 1191 |
|
|
sx_out(bp, CD186x_CCR, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
|
| 1192 |
|
|
/* Setting up modem option registers */
|
| 1193 |
|
|
#ifdef DEBUG_SPECIALIX
|
| 1194 |
|
|
printk ("Mcor1 = %02x, mcor2 = %02x.\n", mcor1, mcor2);
|
| 1195 |
|
|
#endif
|
| 1196 |
|
|
sx_out(bp, CD186x_MCOR1, mcor1);
|
| 1197 |
|
|
sx_out(bp, CD186x_MCOR2, mcor2);
|
| 1198 |
|
|
/* Enable CD186x transmitter & receiver */
|
| 1199 |
|
|
sx_wait_CCR(bp);
|
| 1200 |
|
|
sx_out(bp, CD186x_CCR, CCR_TXEN | CCR_RXEN);
|
| 1201 |
|
|
/* Enable interrupts */
|
| 1202 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 1203 |
|
|
/* And finally set the modem lines... */
|
| 1204 |
|
|
sx_out(bp, CD186x_MSVR, port->MSVR);
|
| 1205 |
|
|
}
|
| 1206 |
|
|
|
| 1207 |
|
|
|
| 1208 |
|
|
/* Must be called with interrupts enabled */
|
| 1209 |
|
|
static int sx_setup_port(struct specialix_board *bp, struct specialix_port *port)
|
| 1210 |
|
|
{
|
| 1211 |
|
|
unsigned long flags;
|
| 1212 |
|
|
|
| 1213 |
|
|
if (port->flags & ASYNC_INITIALIZED)
|
| 1214 |
|
|
return 0;
|
| 1215 |
|
|
|
| 1216 |
|
|
if (!port->xmit_buf) {
|
| 1217 |
|
|
/* We may sleep in get_free_page() */
|
| 1218 |
|
|
unsigned long tmp;
|
| 1219 |
|
|
|
| 1220 |
|
|
if (!(tmp = get_free_page(GFP_KERNEL)))
|
| 1221 |
|
|
return -ENOMEM;
|
| 1222 |
|
|
|
| 1223 |
|
|
if (port->xmit_buf) {
|
| 1224 |
|
|
free_page(tmp);
|
| 1225 |
|
|
return -ERESTARTSYS;
|
| 1226 |
|
|
}
|
| 1227 |
|
|
port->xmit_buf = (unsigned char *) tmp;
|
| 1228 |
|
|
}
|
| 1229 |
|
|
|
| 1230 |
|
|
save_flags(flags); cli();
|
| 1231 |
|
|
|
| 1232 |
|
|
if (port->tty)
|
| 1233 |
|
|
clear_bit(TTY_IO_ERROR, &port->tty->flags);
|
| 1234 |
|
|
|
| 1235 |
|
|
if (port->count == 1)
|
| 1236 |
|
|
bp->count++;
|
| 1237 |
|
|
|
| 1238 |
|
|
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
|
| 1239 |
|
|
sx_change_speed(bp, port);
|
| 1240 |
|
|
port->flags |= ASYNC_INITIALIZED;
|
| 1241 |
|
|
|
| 1242 |
|
|
restore_flags(flags);
|
| 1243 |
|
|
return 0;
|
| 1244 |
|
|
}
|
| 1245 |
|
|
|
| 1246 |
|
|
|
| 1247 |
|
|
/* Must be called with interrupts disabled */
|
| 1248 |
|
|
static void sx_shutdown_port(struct specialix_board *bp, struct specialix_port *port)
|
| 1249 |
|
|
{
|
| 1250 |
|
|
struct tty_struct *tty;
|
| 1251 |
|
|
|
| 1252 |
|
|
if (!(port->flags & ASYNC_INITIALIZED))
|
| 1253 |
|
|
return;
|
| 1254 |
|
|
|
| 1255 |
|
|
#ifdef SX_REPORT_OVERRUN
|
| 1256 |
|
|
printk(KERN_INFO "sx%d: port %d: Total %ld overruns were detected.\n",
|
| 1257 |
|
|
board_No(bp), port_No(port), port->overrun);
|
| 1258 |
|
|
#endif
|
| 1259 |
|
|
#ifdef SX_REPORT_FIFO
|
| 1260 |
|
|
{
|
| 1261 |
|
|
int i;
|
| 1262 |
|
|
|
| 1263 |
|
|
printk(KERN_INFO "sx%d: port %d: FIFO hits [ ",
|
| 1264 |
|
|
board_No(bp), port_No(port));
|
| 1265 |
|
|
for (i = 0; i < 10; i++) {
|
| 1266 |
|
|
printk("%ld ", port->hits[i]);
|
| 1267 |
|
|
}
|
| 1268 |
|
|
printk("].\n");
|
| 1269 |
|
|
}
|
| 1270 |
|
|
#endif
|
| 1271 |
|
|
if (port->xmit_buf) {
|
| 1272 |
|
|
free_page((unsigned long) port->xmit_buf);
|
| 1273 |
|
|
port->xmit_buf = NULL;
|
| 1274 |
|
|
}
|
| 1275 |
|
|
|
| 1276 |
|
|
/* Select port */
|
| 1277 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 1278 |
|
|
|
| 1279 |
|
|
if (!(tty = port->tty) || C_HUPCL(tty)) {
|
| 1280 |
|
|
/* Drop DTR */
|
| 1281 |
|
|
sx_out(bp, CD186x_MSVDTR, 0);
|
| 1282 |
|
|
}
|
| 1283 |
|
|
|
| 1284 |
|
|
/* Reset port */
|
| 1285 |
|
|
sx_wait_CCR(bp);
|
| 1286 |
|
|
sx_out(bp, CD186x_CCR, CCR_SOFTRESET);
|
| 1287 |
|
|
/* Disable all interrupts from this port */
|
| 1288 |
|
|
port->IER = 0;
|
| 1289 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 1290 |
|
|
|
| 1291 |
|
|
if (tty)
|
| 1292 |
|
|
set_bit(TTY_IO_ERROR, &tty->flags);
|
| 1293 |
|
|
port->flags &= ~ASYNC_INITIALIZED;
|
| 1294 |
|
|
|
| 1295 |
|
|
if (--bp->count < 0) {
|
| 1296 |
|
|
printk(KERN_ERR "sx%d: sx_shutdown_port: bad board count: %d\n",
|
| 1297 |
|
|
board_No(bp), bp->count);
|
| 1298 |
|
|
bp->count = 0;
|
| 1299 |
|
|
}
|
| 1300 |
|
|
|
| 1301 |
|
|
/*
|
| 1302 |
|
|
* If this is the last opened port on the board
|
| 1303 |
|
|
* shutdown whole board
|
| 1304 |
|
|
*/
|
| 1305 |
|
|
if (!bp->count)
|
| 1306 |
|
|
sx_shutdown_board(bp);
|
| 1307 |
|
|
}
|
| 1308 |
|
|
|
| 1309 |
|
|
|
| 1310 |
|
|
static int block_til_ready(struct tty_struct *tty, struct file * filp,
|
| 1311 |
|
|
struct specialix_port *port)
|
| 1312 |
|
|
{
|
| 1313 |
|
|
struct wait_queue wait = { current, NULL };
|
| 1314 |
|
|
struct specialix_board *bp = port_Board(port);
|
| 1315 |
|
|
int retval;
|
| 1316 |
|
|
int do_clocal = 0;
|
| 1317 |
|
|
int CD;
|
| 1318 |
|
|
|
| 1319 |
|
|
/*
|
| 1320 |
|
|
* If the device is in the middle of being closed, then block
|
| 1321 |
|
|
* until it's done, and then try again.
|
| 1322 |
|
|
*/
|
| 1323 |
|
|
if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
|
| 1324 |
|
|
interruptible_sleep_on(&port->close_wait);
|
| 1325 |
|
|
if (port->flags & ASYNC_HUP_NOTIFY)
|
| 1326 |
|
|
return -EAGAIN;
|
| 1327 |
|
|
else
|
| 1328 |
|
|
return -ERESTARTSYS;
|
| 1329 |
|
|
}
|
| 1330 |
|
|
|
| 1331 |
|
|
/*
|
| 1332 |
|
|
* If this is a callout device, then just make sure the normal
|
| 1333 |
|
|
* device isn't being used.
|
| 1334 |
|
|
*/
|
| 1335 |
|
|
if (tty->driver.subtype == SPECIALIX_TYPE_CALLOUT) {
|
| 1336 |
|
|
if (port->flags & ASYNC_NORMAL_ACTIVE)
|
| 1337 |
|
|
return -EBUSY;
|
| 1338 |
|
|
if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 1339 |
|
|
(port->flags & ASYNC_SESSION_LOCKOUT) &&
|
| 1340 |
|
|
(port->session != current->session))
|
| 1341 |
|
|
return -EBUSY;
|
| 1342 |
|
|
if ((port->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 1343 |
|
|
(port->flags & ASYNC_PGRP_LOCKOUT) &&
|
| 1344 |
|
|
(port->pgrp != current->pgrp))
|
| 1345 |
|
|
return -EBUSY;
|
| 1346 |
|
|
port->flags |= ASYNC_CALLOUT_ACTIVE;
|
| 1347 |
|
|
return 0;
|
| 1348 |
|
|
}
|
| 1349 |
|
|
|
| 1350 |
|
|
/*
|
| 1351 |
|
|
* If non-blocking mode is set, or the port is not enabled,
|
| 1352 |
|
|
* then make the check up front and then exit.
|
| 1353 |
|
|
*/
|
| 1354 |
|
|
if ((filp->f_flags & O_NONBLOCK) ||
|
| 1355 |
|
|
(tty->flags & (1 << TTY_IO_ERROR))) {
|
| 1356 |
|
|
if (port->flags & ASYNC_CALLOUT_ACTIVE)
|
| 1357 |
|
|
return -EBUSY;
|
| 1358 |
|
|
port->flags |= ASYNC_NORMAL_ACTIVE;
|
| 1359 |
|
|
return 0;
|
| 1360 |
|
|
}
|
| 1361 |
|
|
|
| 1362 |
|
|
if (port->flags & ASYNC_CALLOUT_ACTIVE) {
|
| 1363 |
|
|
if (port->normal_termios.c_cflag & CLOCAL)
|
| 1364 |
|
|
do_clocal = 1;
|
| 1365 |
|
|
} else {
|
| 1366 |
|
|
if (C_CLOCAL(tty))
|
| 1367 |
|
|
do_clocal = 1;
|
| 1368 |
|
|
}
|
| 1369 |
|
|
|
| 1370 |
|
|
/*
|
| 1371 |
|
|
* Block waiting for the carrier detect and the line to become
|
| 1372 |
|
|
* free (i.e., not in use by the callout). While we are in
|
| 1373 |
|
|
* this loop, info->count is dropped by one, so that
|
| 1374 |
|
|
* rs_close() knows when to free things. We restore it upon
|
| 1375 |
|
|
* exit, either normal or abnormal.
|
| 1376 |
|
|
*/
|
| 1377 |
|
|
retval = 0;
|
| 1378 |
|
|
add_wait_queue(&port->open_wait, &wait);
|
| 1379 |
|
|
cli();
|
| 1380 |
|
|
if (!tty_hung_up_p(filp))
|
| 1381 |
|
|
port->count--;
|
| 1382 |
|
|
sti();
|
| 1383 |
|
|
port->blocked_open++;
|
| 1384 |
|
|
while (1) {
|
| 1385 |
|
|
cli();
|
| 1386 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 1387 |
|
|
CD = sx_in(bp, CD186x_MSVR) & MSVR_CD;
|
| 1388 |
|
|
if (!(port->flags & ASYNC_CALLOUT_ACTIVE)) {
|
| 1389 |
|
|
if (SX_CRTSCTS (tty)) {
|
| 1390 |
|
|
/* Activate RTS */
|
| 1391 |
|
|
port->MSVR |= MSVR_DTR;
|
| 1392 |
|
|
sx_out (bp, CD186x_MSVR, port->MSVR);
|
| 1393 |
|
|
} else {
|
| 1394 |
|
|
/* Activate DTR */
|
| 1395 |
|
|
port->MSVR |= MSVR_DTR;
|
| 1396 |
|
|
sx_out (bp, CD186x_MSVR, port->MSVR);
|
| 1397 |
|
|
}
|
| 1398 |
|
|
}
|
| 1399 |
|
|
sti();
|
| 1400 |
|
|
current->state = TASK_INTERRUPTIBLE;
|
| 1401 |
|
|
if (tty_hung_up_p(filp) ||
|
| 1402 |
|
|
!(port->flags & ASYNC_INITIALIZED)) {
|
| 1403 |
|
|
if (port->flags & ASYNC_HUP_NOTIFY)
|
| 1404 |
|
|
retval = -EAGAIN;
|
| 1405 |
|
|
else
|
| 1406 |
|
|
retval = -ERESTARTSYS;
|
| 1407 |
|
|
break;
|
| 1408 |
|
|
}
|
| 1409 |
|
|
if (!(port->flags & ASYNC_CALLOUT_ACTIVE) &&
|
| 1410 |
|
|
!(port->flags & ASYNC_CLOSING) &&
|
| 1411 |
|
|
(do_clocal || CD))
|
| 1412 |
|
|
break;
|
| 1413 |
|
|
if (current->signal & ~current->blocked) {
|
| 1414 |
|
|
retval = -ERESTARTSYS;
|
| 1415 |
|
|
break;
|
| 1416 |
|
|
}
|
| 1417 |
|
|
schedule();
|
| 1418 |
|
|
}
|
| 1419 |
|
|
current->state = TASK_RUNNING;
|
| 1420 |
|
|
remove_wait_queue(&port->open_wait, &wait);
|
| 1421 |
|
|
if (!tty_hung_up_p(filp))
|
| 1422 |
|
|
port->count++;
|
| 1423 |
|
|
port->blocked_open--;
|
| 1424 |
|
|
if (retval)
|
| 1425 |
|
|
return retval;
|
| 1426 |
|
|
|
| 1427 |
|
|
port->flags |= ASYNC_NORMAL_ACTIVE;
|
| 1428 |
|
|
return 0;
|
| 1429 |
|
|
}
|
| 1430 |
|
|
|
| 1431 |
|
|
|
| 1432 |
|
|
static int sx_open(struct tty_struct * tty, struct file * filp)
|
| 1433 |
|
|
{
|
| 1434 |
|
|
int board;
|
| 1435 |
|
|
int error;
|
| 1436 |
|
|
struct specialix_port * port;
|
| 1437 |
|
|
struct specialix_board * bp;
|
| 1438 |
|
|
unsigned long flags;
|
| 1439 |
|
|
|
| 1440 |
|
|
board = SX_BOARD(MINOR(tty->device));
|
| 1441 |
|
|
|
| 1442 |
|
|
if (board > SX_NBOARD || !(sx_board[board].flags & SX_BOARD_PRESENT))
|
| 1443 |
|
|
return -ENODEV;
|
| 1444 |
|
|
|
| 1445 |
|
|
bp = &sx_board[board];
|
| 1446 |
|
|
port = sx_port + board * SX_NPORT + SX_PORT(MINOR(tty->device));
|
| 1447 |
|
|
|
| 1448 |
|
|
#ifdef DEBUG_SPECIALIX
|
| 1449 |
|
|
printk (KERN_DEBUG "Board = %d, bp = %p, port = %p, portno = %d.\n",
|
| 1450 |
|
|
board, bp, port, SX_PORT(MINOR(tty->device)));
|
| 1451 |
|
|
#endif
|
| 1452 |
|
|
|
| 1453 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_open"))
|
| 1454 |
|
|
return -ENODEV;
|
| 1455 |
|
|
|
| 1456 |
|
|
if ((error = sx_setup_board(bp)))
|
| 1457 |
|
|
return error;
|
| 1458 |
|
|
|
| 1459 |
|
|
port->count++;
|
| 1460 |
|
|
tty->driver_data = port;
|
| 1461 |
|
|
port->tty = tty;
|
| 1462 |
|
|
|
| 1463 |
|
|
if ((error = sx_setup_port(bp, port)))
|
| 1464 |
|
|
return error;
|
| 1465 |
|
|
|
| 1466 |
|
|
if ((error = block_til_ready(tty, filp, port)))
|
| 1467 |
|
|
return error;
|
| 1468 |
|
|
|
| 1469 |
|
|
if ((port->count == 1) && (port->flags & ASYNC_SPLIT_TERMIOS)) {
|
| 1470 |
|
|
if (tty->driver.subtype == SPECIALIX_TYPE_NORMAL)
|
| 1471 |
|
|
*tty->termios = port->normal_termios;
|
| 1472 |
|
|
else
|
| 1473 |
|
|
*tty->termios = port->callout_termios;
|
| 1474 |
|
|
save_flags(flags); cli();
|
| 1475 |
|
|
sx_change_speed(bp, port);
|
| 1476 |
|
|
restore_flags(flags);
|
| 1477 |
|
|
}
|
| 1478 |
|
|
|
| 1479 |
|
|
port->session = current->session;
|
| 1480 |
|
|
port->pgrp = current->pgrp;
|
| 1481 |
|
|
return 0;
|
| 1482 |
|
|
}
|
| 1483 |
|
|
|
| 1484 |
|
|
|
| 1485 |
|
|
static void sx_close(struct tty_struct * tty, struct file * filp)
|
| 1486 |
|
|
{
|
| 1487 |
|
|
struct specialix_port *port = (struct specialix_port *) tty->driver_data;
|
| 1488 |
|
|
struct specialix_board *bp;
|
| 1489 |
|
|
unsigned long flags;
|
| 1490 |
|
|
unsigned long timeout;
|
| 1491 |
|
|
|
| 1492 |
|
|
if (!port || sx_paranoia_check(port, tty->device, "close"))
|
| 1493 |
|
|
return;
|
| 1494 |
|
|
|
| 1495 |
|
|
save_flags(flags); cli();
|
| 1496 |
|
|
if (tty_hung_up_p(filp)) {
|
| 1497 |
|
|
restore_flags(flags);
|
| 1498 |
|
|
return;
|
| 1499 |
|
|
}
|
| 1500 |
|
|
|
| 1501 |
|
|
bp = port_Board(port);
|
| 1502 |
|
|
if ((tty->count == 1) && (port->count != 1)) {
|
| 1503 |
|
|
printk(KERN_ERR "sx%d: sx_close: bad port count;"
|
| 1504 |
|
|
" tty->count is 1, port count is %d\n",
|
| 1505 |
|
|
board_No(bp), port->count);
|
| 1506 |
|
|
port->count = 1;
|
| 1507 |
|
|
}
|
| 1508 |
|
|
if (--port->count < 0) {
|
| 1509 |
|
|
printk(KERN_ERR "sx%d: sx_close: bad port count for tty%d: %d\n",
|
| 1510 |
|
|
board_No(bp), port_No(port), port->count);
|
| 1511 |
|
|
port->count = 0;
|
| 1512 |
|
|
}
|
| 1513 |
|
|
if (port->count) {
|
| 1514 |
|
|
restore_flags(flags);
|
| 1515 |
|
|
return;
|
| 1516 |
|
|
}
|
| 1517 |
|
|
port->flags |= ASYNC_CLOSING;
|
| 1518 |
|
|
/*
|
| 1519 |
|
|
* Save the termios structure, since this port may have
|
| 1520 |
|
|
* separate termios for callout and dialin.
|
| 1521 |
|
|
*/
|
| 1522 |
|
|
if (port->flags & ASYNC_NORMAL_ACTIVE)
|
| 1523 |
|
|
port->normal_termios = *tty->termios;
|
| 1524 |
|
|
if (port->flags & ASYNC_CALLOUT_ACTIVE)
|
| 1525 |
|
|
port->callout_termios = *tty->termios;
|
| 1526 |
|
|
/*
|
| 1527 |
|
|
* Now we wait for the transmit buffer to clear; and we notify
|
| 1528 |
|
|
* the line discipline to only process XON/XOFF characters.
|
| 1529 |
|
|
*/
|
| 1530 |
|
|
tty->closing = 1;
|
| 1531 |
|
|
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
|
| 1532 |
|
|
tty_wait_until_sent(tty, port->closing_wait);
|
| 1533 |
|
|
/*
|
| 1534 |
|
|
* At this point we stop accepting input. To do this, we
|
| 1535 |
|
|
* disable the receive line status interrupts, and tell the
|
| 1536 |
|
|
* interrupt driver to stop checking the data ready bit in the
|
| 1537 |
|
|
* line status register.
|
| 1538 |
|
|
*/
|
| 1539 |
|
|
port->IER &= ~IER_RXD;
|
| 1540 |
|
|
if (port->flags & ASYNC_INITIALIZED) {
|
| 1541 |
|
|
port->IER &= ~IER_TXRDY;
|
| 1542 |
|
|
port->IER |= IER_TXEMPTY;
|
| 1543 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 1544 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 1545 |
|
|
/*
|
| 1546 |
|
|
* Before we drop DTR, make sure the UART transmitter
|
| 1547 |
|
|
* has completely drained; this is especially
|
| 1548 |
|
|
* important if there is a transmit FIFO!
|
| 1549 |
|
|
*/
|
| 1550 |
|
|
timeout = jiffies+HZ;
|
| 1551 |
|
|
while(port->IER & IER_TXEMPTY) {
|
| 1552 |
|
|
current->state = TASK_INTERRUPTIBLE;
|
| 1553 |
|
|
current->timeout = jiffies + port->timeout;
|
| 1554 |
|
|
schedule();
|
| 1555 |
|
|
if (jiffies > timeout) {
|
| 1556 |
|
|
printk (KERN_INFO "Timeout waiting for close\n");
|
| 1557 |
|
|
break;
|
| 1558 |
|
|
}
|
| 1559 |
|
|
}
|
| 1560 |
|
|
|
| 1561 |
|
|
}
|
| 1562 |
|
|
sx_shutdown_port(bp, port);
|
| 1563 |
|
|
if (tty->driver.flush_buffer)
|
| 1564 |
|
|
tty->driver.flush_buffer(tty);
|
| 1565 |
|
|
if (tty->ldisc.flush_buffer)
|
| 1566 |
|
|
tty->ldisc.flush_buffer(tty);
|
| 1567 |
|
|
tty->closing = 0;
|
| 1568 |
|
|
port->event = 0;
|
| 1569 |
|
|
port->tty = 0;
|
| 1570 |
|
|
if (port->blocked_open) {
|
| 1571 |
|
|
if (port->close_delay) {
|
| 1572 |
|
|
current->state = TASK_INTERRUPTIBLE;
|
| 1573 |
|
|
current->timeout = jiffies + port->close_delay;
|
| 1574 |
|
|
schedule();
|
| 1575 |
|
|
}
|
| 1576 |
|
|
wake_up_interruptible(&port->open_wait);
|
| 1577 |
|
|
}
|
| 1578 |
|
|
port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|
|
| 1579 |
|
|
ASYNC_CLOSING);
|
| 1580 |
|
|
wake_up_interruptible(&port->close_wait);
|
| 1581 |
|
|
restore_flags(flags);
|
| 1582 |
|
|
}
|
| 1583 |
|
|
|
| 1584 |
|
|
|
| 1585 |
|
|
static int sx_write(struct tty_struct * tty, int from_user,
|
| 1586 |
|
|
const unsigned char *buf, int count)
|
| 1587 |
|
|
{
|
| 1588 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 1589 |
|
|
struct specialix_board *bp;
|
| 1590 |
|
|
int c, total = 0;
|
| 1591 |
|
|
unsigned long flags;
|
| 1592 |
|
|
|
| 1593 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_write"))
|
| 1594 |
|
|
return 0;
|
| 1595 |
|
|
|
| 1596 |
|
|
bp = port_Board(port);
|
| 1597 |
|
|
|
| 1598 |
|
|
if (!tty || !port->xmit_buf || !tmp_buf)
|
| 1599 |
|
|
return 0;
|
| 1600 |
|
|
|
| 1601 |
|
|
if (from_user)
|
| 1602 |
|
|
down(&tmp_buf_sem);
|
| 1603 |
|
|
|
| 1604 |
|
|
save_flags(flags);
|
| 1605 |
|
|
while (1) {
|
| 1606 |
|
|
cli();
|
| 1607 |
|
|
c = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
|
| 1608 |
|
|
SERIAL_XMIT_SIZE - port->xmit_head));
|
| 1609 |
|
|
if (c <= 0)
|
| 1610 |
|
|
break;
|
| 1611 |
|
|
|
| 1612 |
|
|
if (from_user) {
|
| 1613 |
|
|
copy_from_user(tmp_buf, buf, c);
|
| 1614 |
|
|
c = MIN(c, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
|
| 1615 |
|
|
SERIAL_XMIT_SIZE - port->xmit_head));
|
| 1616 |
|
|
memcpy(port->xmit_buf + port->xmit_head, tmp_buf, c);
|
| 1617 |
|
|
} else
|
| 1618 |
|
|
memcpy(port->xmit_buf + port->xmit_head, buf, c);
|
| 1619 |
|
|
port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
|
| 1620 |
|
|
port->xmit_cnt += c;
|
| 1621 |
|
|
restore_flags(flags);
|
| 1622 |
|
|
buf += c;
|
| 1623 |
|
|
count -= c;
|
| 1624 |
|
|
total += c;
|
| 1625 |
|
|
}
|
| 1626 |
|
|
if (from_user)
|
| 1627 |
|
|
up(&tmp_buf_sem);
|
| 1628 |
|
|
if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
|
| 1629 |
|
|
!(port->IER & IER_TXRDY)) {
|
| 1630 |
|
|
port->IER |= IER_TXRDY;
|
| 1631 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 1632 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 1633 |
|
|
}
|
| 1634 |
|
|
restore_flags(flags);
|
| 1635 |
|
|
return total;
|
| 1636 |
|
|
}
|
| 1637 |
|
|
|
| 1638 |
|
|
|
| 1639 |
|
|
static void sx_put_char(struct tty_struct * tty, unsigned char ch)
|
| 1640 |
|
|
{
|
| 1641 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 1642 |
|
|
unsigned long flags;
|
| 1643 |
|
|
|
| 1644 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_put_char"))
|
| 1645 |
|
|
return;
|
| 1646 |
|
|
|
| 1647 |
|
|
if (!tty || !port->xmit_buf)
|
| 1648 |
|
|
return;
|
| 1649 |
|
|
|
| 1650 |
|
|
save_flags(flags); cli();
|
| 1651 |
|
|
|
| 1652 |
|
|
if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
|
| 1653 |
|
|
restore_flags(flags);
|
| 1654 |
|
|
return;
|
| 1655 |
|
|
}
|
| 1656 |
|
|
|
| 1657 |
|
|
port->xmit_buf[port->xmit_head++] = ch;
|
| 1658 |
|
|
port->xmit_head &= SERIAL_XMIT_SIZE - 1;
|
| 1659 |
|
|
port->xmit_cnt++;
|
| 1660 |
|
|
restore_flags(flags);
|
| 1661 |
|
|
}
|
| 1662 |
|
|
|
| 1663 |
|
|
|
| 1664 |
|
|
static void sx_flush_chars(struct tty_struct * tty)
|
| 1665 |
|
|
{
|
| 1666 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 1667 |
|
|
unsigned long flags;
|
| 1668 |
|
|
|
| 1669 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_flush_chars"))
|
| 1670 |
|
|
return;
|
| 1671 |
|
|
|
| 1672 |
|
|
if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
|
| 1673 |
|
|
!port->xmit_buf)
|
| 1674 |
|
|
return;
|
| 1675 |
|
|
|
| 1676 |
|
|
save_flags(flags); cli();
|
| 1677 |
|
|
port->IER |= IER_TXRDY;
|
| 1678 |
|
|
sx_out(port_Board(port), CD186x_CAR, port_No(port));
|
| 1679 |
|
|
sx_out(port_Board(port), CD186x_IER, port->IER);
|
| 1680 |
|
|
restore_flags(flags);
|
| 1681 |
|
|
}
|
| 1682 |
|
|
|
| 1683 |
|
|
|
| 1684 |
|
|
static int sx_write_room(struct tty_struct * tty)
|
| 1685 |
|
|
{
|
| 1686 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 1687 |
|
|
int ret;
|
| 1688 |
|
|
|
| 1689 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_write_room"))
|
| 1690 |
|
|
return 0;
|
| 1691 |
|
|
|
| 1692 |
|
|
ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
|
| 1693 |
|
|
if (ret < 0)
|
| 1694 |
|
|
ret = 0;
|
| 1695 |
|
|
return ret;
|
| 1696 |
|
|
}
|
| 1697 |
|
|
|
| 1698 |
|
|
|
| 1699 |
|
|
static int sx_chars_in_buffer(struct tty_struct *tty)
|
| 1700 |
|
|
{
|
| 1701 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 1702 |
|
|
|
| 1703 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_chars_in_buffer"))
|
| 1704 |
|
|
return 0;
|
| 1705 |
|
|
|
| 1706 |
|
|
return port->xmit_cnt;
|
| 1707 |
|
|
}
|
| 1708 |
|
|
|
| 1709 |
|
|
|
| 1710 |
|
|
static void sx_flush_buffer(struct tty_struct *tty)
|
| 1711 |
|
|
{
|
| 1712 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 1713 |
|
|
unsigned long flags;
|
| 1714 |
|
|
|
| 1715 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_flush_buffer"))
|
| 1716 |
|
|
return;
|
| 1717 |
|
|
|
| 1718 |
|
|
save_flags(flags); cli();
|
| 1719 |
|
|
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
|
| 1720 |
|
|
restore_flags(flags);
|
| 1721 |
|
|
|
| 1722 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 1723 |
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
| 1724 |
|
|
tty->ldisc.write_wakeup)
|
| 1725 |
|
|
(tty->ldisc.write_wakeup)(tty);
|
| 1726 |
|
|
}
|
| 1727 |
|
|
|
| 1728 |
|
|
|
| 1729 |
|
|
static int sx_get_modem_info(struct specialix_port * port, unsigned int *value)
|
| 1730 |
|
|
{
|
| 1731 |
|
|
struct specialix_board * bp;
|
| 1732 |
|
|
unsigned char status;
|
| 1733 |
|
|
unsigned int result;
|
| 1734 |
|
|
unsigned long flags;
|
| 1735 |
|
|
|
| 1736 |
|
|
bp = port_Board(port);
|
| 1737 |
|
|
save_flags(flags); cli();
|
| 1738 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 1739 |
|
|
status = sx_in(bp, CD186x_MSVR);
|
| 1740 |
|
|
restore_flags(flags);
|
| 1741 |
|
|
#ifdef DEBUG_SPECIALIX
|
| 1742 |
|
|
printk (KERN_DEBUG "Got msvr[%d] = %02x, car = %d.\n",
|
| 1743 |
|
|
port_No(port), status, sx_in (bp, CD186x_CAR));
|
| 1744 |
|
|
printk (KERN_DEBUG "sx_port = %p, port = %p\n", sx_port, port);
|
| 1745 |
|
|
#endif
|
| 1746 |
|
|
if (SX_CRTSCTS(port->tty)) {
|
| 1747 |
|
|
result = /* (status & MSVR_RTS) ? */ TIOCM_DTR /* : 0) */
|
| 1748 |
|
|
| ((status & MSVR_DTR) ? TIOCM_RTS : 0)
|
| 1749 |
|
|
| ((status & MSVR_CD) ? TIOCM_CAR : 0)
|
| 1750 |
|
|
|/* ((status & MSVR_DSR) ? */ TIOCM_DSR /* : 0) */
|
| 1751 |
|
|
| ((status & MSVR_CTS) ? TIOCM_CTS : 0);
|
| 1752 |
|
|
} else {
|
| 1753 |
|
|
result = /* (status & MSVR_RTS) ? */ TIOCM_RTS /* : 0) */
|
| 1754 |
|
|
| ((status & MSVR_DTR) ? TIOCM_DTR : 0)
|
| 1755 |
|
|
| ((status & MSVR_CD) ? TIOCM_CAR : 0)
|
| 1756 |
|
|
|/* ((status & MSVR_DSR) ? */ TIOCM_DSR /* : 0) */
|
| 1757 |
|
|
| ((status & MSVR_CTS) ? TIOCM_CTS : 0);
|
| 1758 |
|
|
}
|
| 1759 |
|
|
put_user(result,(unsigned long *) value);
|
| 1760 |
|
|
return 0;
|
| 1761 |
|
|
}
|
| 1762 |
|
|
|
| 1763 |
|
|
|
| 1764 |
|
|
static int sx_set_modem_info(struct specialix_port * port, unsigned int cmd,
|
| 1765 |
|
|
unsigned int *value)
|
| 1766 |
|
|
{
|
| 1767 |
|
|
int error;
|
| 1768 |
|
|
unsigned int arg;
|
| 1769 |
|
|
unsigned long flags;
|
| 1770 |
|
|
struct specialix_board *bp = port_Board(port);
|
| 1771 |
|
|
|
| 1772 |
|
|
error = verify_area(VERIFY_READ, value, sizeof(int));
|
| 1773 |
|
|
if (error)
|
| 1774 |
|
|
return error;
|
| 1775 |
|
|
|
| 1776 |
|
|
Get_user(arg, (unsigned long *) value);
|
| 1777 |
|
|
switch (cmd) {
|
| 1778 |
|
|
case TIOCMBIS:
|
| 1779 |
|
|
/* if (arg & TIOCM_RTS)
|
| 1780 |
|
|
port->MSVR |= MSVR_RTS; */
|
| 1781 |
|
|
/* if (arg & TIOCM_DTR)
|
| 1782 |
|
|
port->MSVR |= MSVR_DTR; */
|
| 1783 |
|
|
|
| 1784 |
|
|
if (SX_CRTSCTS(port->tty)) {
|
| 1785 |
|
|
if (arg & TIOCM_RTS)
|
| 1786 |
|
|
port->MSVR |= MSVR_DTR;
|
| 1787 |
|
|
} else {
|
| 1788 |
|
|
if (arg & TIOCM_DTR)
|
| 1789 |
|
|
port->MSVR |= MSVR_DTR;
|
| 1790 |
|
|
}
|
| 1791 |
|
|
break;
|
| 1792 |
|
|
case TIOCMBIC:
|
| 1793 |
|
|
/* if (arg & TIOCM_RTS)
|
| 1794 |
|
|
port->MSVR &= ~MSVR_RTS; */
|
| 1795 |
|
|
/* if (arg & TIOCM_DTR)
|
| 1796 |
|
|
port->MSVR &= ~MSVR_DTR; */
|
| 1797 |
|
|
if (SX_CRTSCTS(port->tty)) {
|
| 1798 |
|
|
if (arg & TIOCM_RTS)
|
| 1799 |
|
|
port->MSVR &= ~MSVR_DTR;
|
| 1800 |
|
|
} else {
|
| 1801 |
|
|
if (arg & TIOCM_DTR)
|
| 1802 |
|
|
port->MSVR &= ~MSVR_DTR;
|
| 1803 |
|
|
}
|
| 1804 |
|
|
break;
|
| 1805 |
|
|
case TIOCMSET:
|
| 1806 |
|
|
/* port->MSVR = (arg & TIOCM_RTS) ? (port->MSVR | MSVR_RTS) :
|
| 1807 |
|
|
(port->MSVR & ~MSVR_RTS); */
|
| 1808 |
|
|
/* port->MSVR = (arg & TIOCM_DTR) ? (port->MSVR | MSVR_DTR) :
|
| 1809 |
|
|
(port->MSVR & ~MSVR_DTR); */
|
| 1810 |
|
|
if (SX_CRTSCTS(port->tty)) {
|
| 1811 |
|
|
port->MSVR = (arg & TIOCM_RTS) ?
|
| 1812 |
|
|
(port->MSVR | MSVR_DTR) :
|
| 1813 |
|
|
(port->MSVR & ~MSVR_DTR);
|
| 1814 |
|
|
} else {
|
| 1815 |
|
|
port->MSVR = (arg & TIOCM_DTR) ?
|
| 1816 |
|
|
(port->MSVR | MSVR_DTR):
|
| 1817 |
|
|
(port->MSVR & ~MSVR_DTR);
|
| 1818 |
|
|
}
|
| 1819 |
|
|
break;
|
| 1820 |
|
|
default:
|
| 1821 |
|
|
return -EINVAL;
|
| 1822 |
|
|
}
|
| 1823 |
|
|
save_flags(flags); cli();
|
| 1824 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 1825 |
|
|
sx_out(bp, CD186x_MSVR, port->MSVR);
|
| 1826 |
|
|
restore_flags(flags);
|
| 1827 |
|
|
return 0;
|
| 1828 |
|
|
}
|
| 1829 |
|
|
|
| 1830 |
|
|
|
| 1831 |
|
|
extern inline void sx_send_break(struct specialix_port * port, unsigned long length)
|
| 1832 |
|
|
{
|
| 1833 |
|
|
struct specialix_board *bp = port_Board(port);
|
| 1834 |
|
|
unsigned long flags;
|
| 1835 |
|
|
|
| 1836 |
|
|
save_flags(flags); cli();
|
| 1837 |
|
|
port->break_length = SPECIALIX_TPS / HZ * length;
|
| 1838 |
|
|
port->COR2 |= COR2_ETC;
|
| 1839 |
|
|
port->IER |= IER_TXRDY;
|
| 1840 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 1841 |
|
|
sx_out(bp, CD186x_COR2, port->COR2);
|
| 1842 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 1843 |
|
|
sx_wait_CCR(bp);
|
| 1844 |
|
|
sx_out(bp, CD186x_CCR, CCR_CORCHG2);
|
| 1845 |
|
|
sx_wait_CCR(bp);
|
| 1846 |
|
|
restore_flags(flags);
|
| 1847 |
|
|
}
|
| 1848 |
|
|
|
| 1849 |
|
|
|
| 1850 |
|
|
extern inline int sx_set_serial_info(struct specialix_port * port,
|
| 1851 |
|
|
struct serial_struct * newinfo)
|
| 1852 |
|
|
{
|
| 1853 |
|
|
struct serial_struct tmp;
|
| 1854 |
|
|
struct specialix_board *bp = port_Board(port);
|
| 1855 |
|
|
int change_speed;
|
| 1856 |
|
|
unsigned long flags;
|
| 1857 |
|
|
int error;
|
| 1858 |
|
|
|
| 1859 |
|
|
error = verify_area(VERIFY_READ, (void *) newinfo, sizeof(tmp));
|
| 1860 |
|
|
if (error)
|
| 1861 |
|
|
return error;
|
| 1862 |
|
|
|
| 1863 |
|
|
copy_from_user(&tmp, newinfo, sizeof(tmp));
|
| 1864 |
|
|
|
| 1865 |
|
|
#if 0
|
| 1866 |
|
|
if ((tmp.irq != bp->irq) ||
|
| 1867 |
|
|
(tmp.port != bp->base) ||
|
| 1868 |
|
|
(tmp.type != PORT_CIRRUS) ||
|
| 1869 |
|
|
(tmp.baud_base != (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC) ||
|
| 1870 |
|
|
(tmp.custom_divisor != 0) ||
|
| 1871 |
|
|
(tmp.xmit_fifo_size != CD186x_NFIFO) ||
|
| 1872 |
|
|
(tmp.flags & ~SPECIALIX_LEGAL_FLAGS))
|
| 1873 |
|
|
return -EINVAL;
|
| 1874 |
|
|
#endif
|
| 1875 |
|
|
|
| 1876 |
|
|
change_speed = ((port->flags & ASYNC_SPD_MASK) !=
|
| 1877 |
|
|
(tmp.flags & ASYNC_SPD_MASK));
|
| 1878 |
|
|
|
| 1879 |
|
|
if (!suser()) {
|
| 1880 |
|
|
if ((tmp.close_delay != port->close_delay) ||
|
| 1881 |
|
|
(tmp.closing_wait != port->closing_wait) ||
|
| 1882 |
|
|
((tmp.flags & ~ASYNC_USR_MASK) !=
|
| 1883 |
|
|
(port->flags & ~ASYNC_USR_MASK)))
|
| 1884 |
|
|
return -EPERM;
|
| 1885 |
|
|
port->flags = ((port->flags & ~ASYNC_USR_MASK) |
|
| 1886 |
|
|
(tmp.flags & ASYNC_USR_MASK));
|
| 1887 |
|
|
} else {
|
| 1888 |
|
|
port->flags = ((port->flags & ~ASYNC_FLAGS) |
|
| 1889 |
|
|
(tmp.flags & ASYNC_FLAGS));
|
| 1890 |
|
|
port->close_delay = tmp.close_delay;
|
| 1891 |
|
|
port->closing_wait = tmp.closing_wait;
|
| 1892 |
|
|
}
|
| 1893 |
|
|
if (change_speed) {
|
| 1894 |
|
|
save_flags(flags); cli();
|
| 1895 |
|
|
sx_change_speed(bp, port);
|
| 1896 |
|
|
restore_flags(flags);
|
| 1897 |
|
|
}
|
| 1898 |
|
|
return 0;
|
| 1899 |
|
|
}
|
| 1900 |
|
|
|
| 1901 |
|
|
|
| 1902 |
|
|
extern inline int sx_get_serial_info(struct specialix_port * port,
|
| 1903 |
|
|
struct serial_struct * retinfo)
|
| 1904 |
|
|
{
|
| 1905 |
|
|
struct serial_struct tmp;
|
| 1906 |
|
|
struct specialix_board *bp = port_Board(port);
|
| 1907 |
|
|
int error;
|
| 1908 |
|
|
|
| 1909 |
|
|
error = verify_area(VERIFY_WRITE, (void *) retinfo, sizeof(tmp));
|
| 1910 |
|
|
if (error)
|
| 1911 |
|
|
return error;
|
| 1912 |
|
|
|
| 1913 |
|
|
memset(&tmp, 0, sizeof(tmp));
|
| 1914 |
|
|
tmp.type = PORT_CIRRUS;
|
| 1915 |
|
|
tmp.line = port - sx_port;
|
| 1916 |
|
|
tmp.port = bp->base;
|
| 1917 |
|
|
tmp.irq = bp->irq;
|
| 1918 |
|
|
tmp.flags = port->flags;
|
| 1919 |
|
|
tmp.baud_base = (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC;
|
| 1920 |
|
|
tmp.close_delay = port->close_delay * HZ/100;
|
| 1921 |
|
|
tmp.closing_wait = port->closing_wait * HZ/100;
|
| 1922 |
|
|
tmp.xmit_fifo_size = CD186x_NFIFO;
|
| 1923 |
|
|
copy_to_user(retinfo, &tmp, sizeof(tmp));
|
| 1924 |
|
|
return 0;
|
| 1925 |
|
|
}
|
| 1926 |
|
|
|
| 1927 |
|
|
|
| 1928 |
|
|
static int sx_ioctl(struct tty_struct * tty, struct file * filp,
|
| 1929 |
|
|
unsigned int cmd, unsigned long arg)
|
| 1930 |
|
|
{
|
| 1931 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 1932 |
|
|
int error;
|
| 1933 |
|
|
int retval;
|
| 1934 |
|
|
|
| 1935 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_ioctl"))
|
| 1936 |
|
|
return -ENODEV;
|
| 1937 |
|
|
|
| 1938 |
|
|
switch (cmd) {
|
| 1939 |
|
|
case TCSBRK: /* SVID version: non-zero arg --> no break */
|
| 1940 |
|
|
retval = tty_check_change(tty);
|
| 1941 |
|
|
if (retval)
|
| 1942 |
|
|
return retval;
|
| 1943 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1944 |
|
|
if (!arg)
|
| 1945 |
|
|
sx_send_break(port, HZ/4); /* 1/4 second */
|
| 1946 |
|
|
return 0;
|
| 1947 |
|
|
case TCSBRKP: /* support for POSIX tcsendbreak() */
|
| 1948 |
|
|
retval = tty_check_change(tty);
|
| 1949 |
|
|
if (retval)
|
| 1950 |
|
|
return retval;
|
| 1951 |
|
|
tty_wait_until_sent(tty, 0);
|
| 1952 |
|
|
sx_send_break(port, arg ? arg*(HZ/10) : HZ/4);
|
| 1953 |
|
|
return 0;
|
| 1954 |
|
|
case TIOCGSOFTCAR:
|
| 1955 |
|
|
error = verify_area(VERIFY_WRITE, (void *) arg, sizeof(long));
|
| 1956 |
|
|
if (error)
|
| 1957 |
|
|
return error;
|
| 1958 |
|
|
put_user(C_CLOCAL(tty) ? 1 : 0,
|
| 1959 |
|
|
(unsigned long *) arg);
|
| 1960 |
|
|
return 0;
|
| 1961 |
|
|
case TIOCSSOFTCAR:
|
| 1962 |
|
|
Get_user(arg, (unsigned long *) arg);
|
| 1963 |
|
|
tty->termios->c_cflag =
|
| 1964 |
|
|
((tty->termios->c_cflag & ~CLOCAL) |
|
| 1965 |
|
|
(arg ? CLOCAL : 0));
|
| 1966 |
|
|
return 0;
|
| 1967 |
|
|
case TIOCMGET:
|
| 1968 |
|
|
error = verify_area(VERIFY_WRITE, (void *) arg,
|
| 1969 |
|
|
sizeof(unsigned int));
|
| 1970 |
|
|
if (error)
|
| 1971 |
|
|
return error;
|
| 1972 |
|
|
return sx_get_modem_info(port, (unsigned int *) arg);
|
| 1973 |
|
|
case TIOCMBIS:
|
| 1974 |
|
|
case TIOCMBIC:
|
| 1975 |
|
|
case TIOCMSET:
|
| 1976 |
|
|
return sx_set_modem_info(port, cmd, (unsigned int *) arg);
|
| 1977 |
|
|
case TIOCGSERIAL:
|
| 1978 |
|
|
return sx_get_serial_info(port, (struct serial_struct *) arg);
|
| 1979 |
|
|
case TIOCSSERIAL:
|
| 1980 |
|
|
return sx_set_serial_info(port, (struct serial_struct *) arg);
|
| 1981 |
|
|
default:
|
| 1982 |
|
|
return -ENOIOCTLCMD;
|
| 1983 |
|
|
}
|
| 1984 |
|
|
return 0;
|
| 1985 |
|
|
}
|
| 1986 |
|
|
|
| 1987 |
|
|
|
| 1988 |
|
|
static void sx_throttle(struct tty_struct * tty)
|
| 1989 |
|
|
{
|
| 1990 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 1991 |
|
|
struct specialix_board *bp;
|
| 1992 |
|
|
unsigned long flags;
|
| 1993 |
|
|
|
| 1994 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_throttle"))
|
| 1995 |
|
|
return;
|
| 1996 |
|
|
|
| 1997 |
|
|
bp = port_Board(port);
|
| 1998 |
|
|
|
| 1999 |
|
|
save_flags(flags); cli();
|
| 2000 |
|
|
|
| 2001 |
|
|
/* Use DTR instead of RTS ! */
|
| 2002 |
|
|
if (SX_CRTSCTS (tty))
|
| 2003 |
|
|
port->MSVR &= ~MSVR_DTR;
|
| 2004 |
|
|
else {
|
| 2005 |
|
|
/* Auch!!! I think the system shouldn't call this then. */
|
| 2006 |
|
|
/* Or maybe we're supposed (allowed?) to do our side of hw
|
| 2007 |
|
|
handshake anyway, even when hardware handshake is off.
|
| 2008 |
|
|
When you see this in your logs, please report.... */
|
| 2009 |
|
|
printk (KERN_ERR "sx%d: Need to throttle, but can't (hardware hs is off)\n",
|
| 2010 |
|
|
port_No (port));
|
| 2011 |
|
|
}
|
| 2012 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 2013 |
|
|
if (I_IXOFF(tty)) {
|
| 2014 |
|
|
sx_wait_CCR(bp);
|
| 2015 |
|
|
sx_out(bp, CD186x_CCR, CCR_SSCH2);
|
| 2016 |
|
|
sx_wait_CCR(bp);
|
| 2017 |
|
|
}
|
| 2018 |
|
|
sx_out(bp, CD186x_MSVR, port->MSVR);
|
| 2019 |
|
|
restore_flags(flags);
|
| 2020 |
|
|
}
|
| 2021 |
|
|
|
| 2022 |
|
|
|
| 2023 |
|
|
static void sx_unthrottle(struct tty_struct * tty)
|
| 2024 |
|
|
{
|
| 2025 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 2026 |
|
|
struct specialix_board *bp;
|
| 2027 |
|
|
unsigned long flags;
|
| 2028 |
|
|
|
| 2029 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_unthrottle"))
|
| 2030 |
|
|
return;
|
| 2031 |
|
|
|
| 2032 |
|
|
bp = port_Board(port);
|
| 2033 |
|
|
|
| 2034 |
|
|
save_flags(flags); cli();
|
| 2035 |
|
|
/* XXXX Use DTR INSTEAD???? */
|
| 2036 |
|
|
if (SX_CRTSCTS(tty)) {
|
| 2037 |
|
|
port->MSVR |= MSVR_DTR;
|
| 2038 |
|
|
} /* Else clause: see remark in "sx_throttle"... */
|
| 2039 |
|
|
|
| 2040 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 2041 |
|
|
if (I_IXOFF(tty)) {
|
| 2042 |
|
|
sx_wait_CCR(bp);
|
| 2043 |
|
|
sx_out(bp, CD186x_CCR, CCR_SSCH1);
|
| 2044 |
|
|
sx_wait_CCR(bp);
|
| 2045 |
|
|
}
|
| 2046 |
|
|
sx_out(bp, CD186x_MSVR, port->MSVR);
|
| 2047 |
|
|
restore_flags(flags);
|
| 2048 |
|
|
}
|
| 2049 |
|
|
|
| 2050 |
|
|
|
| 2051 |
|
|
static void sx_stop(struct tty_struct * tty)
|
| 2052 |
|
|
{
|
| 2053 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 2054 |
|
|
struct specialix_board *bp;
|
| 2055 |
|
|
unsigned long flags;
|
| 2056 |
|
|
|
| 2057 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_stop"))
|
| 2058 |
|
|
return;
|
| 2059 |
|
|
|
| 2060 |
|
|
bp = port_Board(port);
|
| 2061 |
|
|
|
| 2062 |
|
|
save_flags(flags); cli();
|
| 2063 |
|
|
port->IER &= ~IER_TXRDY;
|
| 2064 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 2065 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 2066 |
|
|
restore_flags(flags);
|
| 2067 |
|
|
}
|
| 2068 |
|
|
|
| 2069 |
|
|
|
| 2070 |
|
|
static void sx_start(struct tty_struct * tty)
|
| 2071 |
|
|
{
|
| 2072 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 2073 |
|
|
struct specialix_board *bp;
|
| 2074 |
|
|
unsigned long flags;
|
| 2075 |
|
|
|
| 2076 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_start"))
|
| 2077 |
|
|
return;
|
| 2078 |
|
|
|
| 2079 |
|
|
bp = port_Board(port);
|
| 2080 |
|
|
|
| 2081 |
|
|
save_flags(flags); cli();
|
| 2082 |
|
|
if (port->xmit_cnt && port->xmit_buf && !(port->IER & IER_TXRDY)) {
|
| 2083 |
|
|
port->IER |= IER_TXRDY;
|
| 2084 |
|
|
sx_out(bp, CD186x_CAR, port_No(port));
|
| 2085 |
|
|
sx_out(bp, CD186x_IER, port->IER);
|
| 2086 |
|
|
}
|
| 2087 |
|
|
restore_flags(flags);
|
| 2088 |
|
|
}
|
| 2089 |
|
|
|
| 2090 |
|
|
|
| 2091 |
|
|
/*
|
| 2092 |
|
|
* This routine is called from the scheduler tqueue when the interrupt
|
| 2093 |
|
|
* routine has signalled that a hangup has occurred. The path of
|
| 2094 |
|
|
* hangup processing is:
|
| 2095 |
|
|
*
|
| 2096 |
|
|
* serial interrupt routine -> (scheduler tqueue) ->
|
| 2097 |
|
|
* do_sx_hangup() -> tty->hangup() -> sx_hangup()
|
| 2098 |
|
|
*
|
| 2099 |
|
|
*/
|
| 2100 |
|
|
static void do_sx_hangup(void *private_)
|
| 2101 |
|
|
{
|
| 2102 |
|
|
struct specialix_port *port = (struct specialix_port *) private_;
|
| 2103 |
|
|
struct tty_struct *tty;
|
| 2104 |
|
|
|
| 2105 |
|
|
tty = port->tty;
|
| 2106 |
|
|
if (!tty)
|
| 2107 |
|
|
return;
|
| 2108 |
|
|
|
| 2109 |
|
|
tty_hangup(tty);
|
| 2110 |
|
|
}
|
| 2111 |
|
|
|
| 2112 |
|
|
|
| 2113 |
|
|
static void sx_hangup(struct tty_struct * tty)
|
| 2114 |
|
|
{
|
| 2115 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 2116 |
|
|
struct specialix_board *bp;
|
| 2117 |
|
|
|
| 2118 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_hangup"))
|
| 2119 |
|
|
return;
|
| 2120 |
|
|
|
| 2121 |
|
|
bp = port_Board(port);
|
| 2122 |
|
|
|
| 2123 |
|
|
sx_shutdown_port(bp, port);
|
| 2124 |
|
|
port->event = 0;
|
| 2125 |
|
|
port->count = 0;
|
| 2126 |
|
|
port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
|
| 2127 |
|
|
port->tty = 0;
|
| 2128 |
|
|
wake_up_interruptible(&port->open_wait);
|
| 2129 |
|
|
}
|
| 2130 |
|
|
|
| 2131 |
|
|
|
| 2132 |
|
|
static void sx_set_termios(struct tty_struct * tty, struct termios * old_termios)
|
| 2133 |
|
|
{
|
| 2134 |
|
|
struct specialix_port *port = (struct specialix_port *)tty->driver_data;
|
| 2135 |
|
|
unsigned long flags;
|
| 2136 |
|
|
|
| 2137 |
|
|
if (sx_paranoia_check(port, tty->device, "sx_set_termios"))
|
| 2138 |
|
|
return;
|
| 2139 |
|
|
|
| 2140 |
|
|
if (tty->termios->c_cflag == old_termios->c_cflag &&
|
| 2141 |
|
|
tty->termios->c_iflag == old_termios->c_iflag)
|
| 2142 |
|
|
return;
|
| 2143 |
|
|
|
| 2144 |
|
|
save_flags(flags); cli();
|
| 2145 |
|
|
sx_change_speed(port_Board(port), port);
|
| 2146 |
|
|
restore_flags(flags);
|
| 2147 |
|
|
|
| 2148 |
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
| 2149 |
|
|
!(tty->termios->c_cflag & CRTSCTS)) {
|
| 2150 |
|
|
tty->hw_stopped = 0;
|
| 2151 |
|
|
sx_start(tty);
|
| 2152 |
|
|
}
|
| 2153 |
|
|
}
|
| 2154 |
|
|
|
| 2155 |
|
|
|
| 2156 |
|
|
static void do_specialix_bh(void)
|
| 2157 |
|
|
{
|
| 2158 |
|
|
run_task_queue(&tq_specialix);
|
| 2159 |
|
|
}
|
| 2160 |
|
|
|
| 2161 |
|
|
|
| 2162 |
|
|
static void do_softint(void *private_)
|
| 2163 |
|
|
{
|
| 2164 |
|
|
struct specialix_port *port = (struct specialix_port *) private_;
|
| 2165 |
|
|
struct tty_struct *tty;
|
| 2166 |
|
|
|
| 2167 |
|
|
if(!(tty = port->tty))
|
| 2168 |
|
|
return;
|
| 2169 |
|
|
|
| 2170 |
|
|
if (clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event)) {
|
| 2171 |
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
| 2172 |
|
|
tty->ldisc.write_wakeup)
|
| 2173 |
|
|
(tty->ldisc.write_wakeup)(tty);
|
| 2174 |
|
|
wake_up_interruptible(&tty->write_wait);
|
| 2175 |
|
|
}
|
| 2176 |
|
|
}
|
| 2177 |
|
|
|
| 2178 |
|
|
|
| 2179 |
|
|
static int sx_init_drivers(void)
|
| 2180 |
|
|
{
|
| 2181 |
|
|
int error;
|
| 2182 |
|
|
int i;
|
| 2183 |
|
|
|
| 2184 |
|
|
|
| 2185 |
|
|
if (!(tmp_buf = (unsigned char *) get_free_page(GFP_KERNEL))) {
|
| 2186 |
|
|
printk(KERN_ERR "sx: Couldn't get free page.\n");
|
| 2187 |
|
|
return 1;
|
| 2188 |
|
|
}
|
| 2189 |
|
|
init_bh(SPECIALIX_BH, do_specialix_bh);
|
| 2190 |
|
|
memset(&specialix_driver, 0, sizeof(specialix_driver));
|
| 2191 |
|
|
specialix_driver.magic = TTY_DRIVER_MAGIC;
|
| 2192 |
|
|
specialix_driver.name = "ttyW";
|
| 2193 |
|
|
specialix_driver.major = SPECIALIX_NORMAL_MAJOR;
|
| 2194 |
|
|
specialix_driver.num = SX_NBOARD * SX_NPORT;
|
| 2195 |
|
|
specialix_driver.type = TTY_DRIVER_TYPE_SERIAL;
|
| 2196 |
|
|
specialix_driver.subtype = SPECIALIX_TYPE_NORMAL;
|
| 2197 |
|
|
specialix_driver.init_termios = tty_std_termios;
|
| 2198 |
|
|
specialix_driver.init_termios.c_cflag =
|
| 2199 |
|
|
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
|
| 2200 |
|
|
specialix_driver.flags = TTY_DRIVER_REAL_RAW;
|
| 2201 |
|
|
specialix_driver.refcount = &specialix_refcount;
|
| 2202 |
|
|
specialix_driver.table = specialix_table;
|
| 2203 |
|
|
specialix_driver.termios = specialix_termios;
|
| 2204 |
|
|
specialix_driver.termios_locked = specialix_termios_locked;
|
| 2205 |
|
|
|
| 2206 |
|
|
specialix_driver.open = sx_open;
|
| 2207 |
|
|
specialix_driver.close = sx_close;
|
| 2208 |
|
|
specialix_driver.write = sx_write;
|
| 2209 |
|
|
specialix_driver.put_char = sx_put_char;
|
| 2210 |
|
|
specialix_driver.flush_chars = sx_flush_chars;
|
| 2211 |
|
|
specialix_driver.write_room = sx_write_room;
|
| 2212 |
|
|
specialix_driver.chars_in_buffer = sx_chars_in_buffer;
|
| 2213 |
|
|
specialix_driver.flush_buffer = sx_flush_buffer;
|
| 2214 |
|
|
specialix_driver.ioctl = sx_ioctl;
|
| 2215 |
|
|
specialix_driver.throttle = sx_throttle;
|
| 2216 |
|
|
specialix_driver.unthrottle = sx_unthrottle;
|
| 2217 |
|
|
specialix_driver.set_termios = sx_set_termios;
|
| 2218 |
|
|
specialix_driver.stop = sx_stop;
|
| 2219 |
|
|
specialix_driver.start = sx_start;
|
| 2220 |
|
|
specialix_driver.hangup = sx_hangup;
|
| 2221 |
|
|
|
| 2222 |
|
|
specialix_callout_driver = specialix_driver;
|
| 2223 |
|
|
specialix_callout_driver.name = "cuw";
|
| 2224 |
|
|
specialix_callout_driver.major = SPECIALIX_CALLOUT_MAJOR;
|
| 2225 |
|
|
specialix_callout_driver.subtype = SPECIALIX_TYPE_CALLOUT;
|
| 2226 |
|
|
|
| 2227 |
|
|
if ((error = tty_register_driver(&specialix_driver))) {
|
| 2228 |
|
|
free_page((unsigned long)tmp_buf);
|
| 2229 |
|
|
printk(KERN_ERR "sx: Couldn't register specialix IO8+ driver, error = %d\n",
|
| 2230 |
|
|
error);
|
| 2231 |
|
|
return 1;
|
| 2232 |
|
|
}
|
| 2233 |
|
|
if ((error = tty_register_driver(&specialix_callout_driver))) {
|
| 2234 |
|
|
free_page((unsigned long)tmp_buf);
|
| 2235 |
|
|
tty_unregister_driver(&specialix_driver);
|
| 2236 |
|
|
printk(KERN_ERR "sx: Couldn't register specialix IO8+ callout driver, error = %d\n",
|
| 2237 |
|
|
error);
|
| 2238 |
|
|
return 1;
|
| 2239 |
|
|
}
|
| 2240 |
|
|
|
| 2241 |
|
|
memset(sx_port, 0, sizeof(sx_port));
|
| 2242 |
|
|
for (i = 0; i < SX_NPORT * SX_NBOARD; i++) {
|
| 2243 |
|
|
sx_port[i].callout_termios = specialix_callout_driver.init_termios;
|
| 2244 |
|
|
sx_port[i].normal_termios = specialix_driver.init_termios;
|
| 2245 |
|
|
sx_port[i].magic = SPECIALIX_MAGIC;
|
| 2246 |
|
|
sx_port[i].tqueue.routine = do_softint;
|
| 2247 |
|
|
sx_port[i].tqueue.data = &sx_port[i];
|
| 2248 |
|
|
sx_port[i].tqueue_hangup.routine = do_sx_hangup;
|
| 2249 |
|
|
sx_port[i].tqueue_hangup.data = &sx_port[i];
|
| 2250 |
|
|
sx_port[i].close_delay = 50 * HZ/100;
|
| 2251 |
|
|
sx_port[i].closing_wait = 3000 * HZ/100;
|
| 2252 |
|
|
}
|
| 2253 |
|
|
|
| 2254 |
|
|
return 0;
|
| 2255 |
|
|
}
|
| 2256 |
|
|
|
| 2257 |
|
|
|
| 2258 |
|
|
static void sx_release_drivers(void)
|
| 2259 |
|
|
{
|
| 2260 |
|
|
free_page((unsigned long)tmp_buf);
|
| 2261 |
|
|
tty_unregister_driver(&specialix_driver);
|
| 2262 |
|
|
tty_unregister_driver(&specialix_callout_driver);
|
| 2263 |
|
|
}
|
| 2264 |
|
|
|
| 2265 |
|
|
|
| 2266 |
|
|
#ifndef MODULE
|
| 2267 |
|
|
/*
|
| 2268 |
|
|
* Called at boot time.
|
| 2269 |
|
|
*
|
| 2270 |
|
|
* You can specify IO base for up to SX_NBOARD cards,
|
| 2271 |
|
|
* using line "specialix=0xiobase1,0xiobase2,.." at LILO prompt.
|
| 2272 |
|
|
* Note that there will be no probing at default
|
| 2273 |
|
|
* addresses in this case.
|
| 2274 |
|
|
*
|
| 2275 |
|
|
*/
|
| 2276 |
|
|
void specialix_setup(char *str, int * ints)
|
| 2277 |
|
|
{
|
| 2278 |
|
|
int i;
|
| 2279 |
|
|
|
| 2280 |
|
|
for (i=0;i<SX_NBOARD;i++) {
|
| 2281 |
|
|
sx_board[i].base = 0;
|
| 2282 |
|
|
}
|
| 2283 |
|
|
|
| 2284 |
|
|
for (i = 1; i <= ints[0]; i++) {
|
| 2285 |
|
|
if (i&1)
|
| 2286 |
|
|
sx_board[i/2].base = ints[i];
|
| 2287 |
|
|
else
|
| 2288 |
|
|
sx_board[i/2 -1].irq = ints[i];
|
| 2289 |
|
|
}
|
| 2290 |
|
|
}
|
| 2291 |
|
|
#endif
|
| 2292 |
|
|
|
| 2293 |
|
|
/*
|
| 2294 |
|
|
* This routine must be called by kernel at boot time
|
| 2295 |
|
|
*/
|
| 2296 |
|
|
int specialix_init(void)
|
| 2297 |
|
|
{
|
| 2298 |
|
|
int i;
|
| 2299 |
|
|
int found = 0;
|
| 2300 |
|
|
#ifdef CONFIG_PCI
|
| 2301 |
|
|
int pci_index;
|
| 2302 |
|
|
unsigned char pci_bus, pci_device_fn;
|
| 2303 |
|
|
#endif
|
| 2304 |
|
|
|
| 2305 |
|
|
printk(KERN_INFO "sx: Specialix IO8+ driver v" VERSION ", (c) R.E.Wolff 1997/1998.\n");
|
| 2306 |
|
|
printk(KERN_INFO "sx: derived from work (c) D.Gorodchanin 1994-1996.\n");
|
| 2307 |
|
|
#ifdef CONFIG_SPECIALIX_RTSCTS
|
| 2308 |
|
|
printk (KERN_INFO "sx: DTR/RTS pin is always RTS.\n");
|
| 2309 |
|
|
#else
|
| 2310 |
|
|
printk (KERN_INFO "sx: DTR/RTS pin is RTS when CRTSCTS is on.\n");
|
| 2311 |
|
|
#endif
|
| 2312 |
|
|
|
| 2313 |
|
|
if (sx_init_drivers())
|
| 2314 |
|
|
return -EIO;
|
| 2315 |
|
|
|
| 2316 |
|
|
for (i = 0; i < SX_NBOARD; i++)
|
| 2317 |
|
|
if (sx_board[i].base && !sx_probe(&sx_board[i]))
|
| 2318 |
|
|
found++;
|
| 2319 |
|
|
|
| 2320 |
|
|
#ifdef CONFIG_PCI
|
| 2321 |
|
|
i=0;
|
| 2322 |
|
|
pci_index = 0;
|
| 2323 |
|
|
while ((i < SX_NBOARD) && (pci_index < 0xff)) {
|
| 2324 |
|
|
unsigned char tbyte;
|
| 2325 |
|
|
unsigned int tint;
|
| 2326 |
|
|
if (sx_board[i].flags & SX_BOARD_PRESENT) {
|
| 2327 |
|
|
i++;
|
| 2328 |
|
|
continue;
|
| 2329 |
|
|
}
|
| 2330 |
|
|
if (pcibios_find_device (PCI_VENDOR_ID_SPECIALIX,
|
| 2331 |
|
|
PCI_DEVICE_ID_SPECIALIX_IO8,
|
| 2332 |
|
|
pci_index, &pci_bus, &pci_device_fn)
|
| 2333 |
|
|
!= PCIBIOS_SUCCESSFUL)
|
| 2334 |
|
|
break;
|
| 2335 |
|
|
pcibios_read_config_byte(pci_bus, pci_device_fn,
|
| 2336 |
|
|
PCI_INTERRUPT_LINE, &tbyte);
|
| 2337 |
|
|
sx_board[i].irq = tbyte;
|
| 2338 |
|
|
|
| 2339 |
|
|
pcibios_read_config_dword(pci_bus, pci_device_fn,
|
| 2340 |
|
|
PCI_BASE_ADDRESS_2, &tint);
|
| 2341 |
|
|
/* Mask out the fact that it's IO-space */
|
| 2342 |
|
|
sx_board[i].base = tint & PCI_BASE_ADDRESS_IO_MASK;
|
| 2343 |
|
|
sx_board[i].flags |= SX_BOARD_IS_PCI;
|
| 2344 |
|
|
if (!sx_probe(&sx_board[i]))
|
| 2345 |
|
|
found ++;
|
| 2346 |
|
|
pci_index++;
|
| 2347 |
|
|
}
|
| 2348 |
|
|
#endif
|
| 2349 |
|
|
|
| 2350 |
|
|
if (!found) {
|
| 2351 |
|
|
sx_release_drivers();
|
| 2352 |
|
|
printk(KERN_INFO "sx: No specialix IO8+ boards detected.\n");
|
| 2353 |
|
|
return -EIO;
|
| 2354 |
|
|
}
|
| 2355 |
|
|
|
| 2356 |
|
|
return 0;
|
| 2357 |
|
|
}
|
| 2358 |
|
|
|
| 2359 |
|
|
#ifdef MODULE
|
| 2360 |
|
|
int iobase[SX_NBOARD] = {0,};
|
| 2361 |
|
|
|
| 2362 |
|
|
int irq [SX_NBOARD] = {0,};
|
| 2363 |
|
|
|
| 2364 |
|
|
/*
|
| 2365 |
|
|
* You can setup up to 4 boards.
|
| 2366 |
|
|
* by specifying "iobase=0xXXX,0xXXX ..." as insmod parameter.
|
| 2367 |
|
|
* You should specify the IRQs too in that case "irq=....,...".
|
| 2368 |
|
|
*
|
| 2369 |
|
|
* More than 4 boards in one computer is not possible, as the card can
|
| 2370 |
|
|
* only use 4 different interrupts.
|
| 2371 |
|
|
*
|
| 2372 |
|
|
*/
|
| 2373 |
|
|
int init_module(void)
|
| 2374 |
|
|
{
|
| 2375 |
|
|
int i;
|
| 2376 |
|
|
|
| 2377 |
|
|
if (iobase[0] || iobase[1] || iobase[2] || iobase[3]) {
|
| 2378 |
|
|
for(i = 0; i < SX_NBOARD; i++) {
|
| 2379 |
|
|
sx_board[i].base = iobase[i];
|
| 2380 |
|
|
sx_board[i].irq = irq[i];
|
| 2381 |
|
|
}
|
| 2382 |
|
|
}
|
| 2383 |
|
|
|
| 2384 |
|
|
return specialix_init();
|
| 2385 |
|
|
}
|
| 2386 |
|
|
|
| 2387 |
|
|
|
| 2388 |
|
|
void cleanup_module(void)
|
| 2389 |
|
|
{
|
| 2390 |
|
|
int i;
|
| 2391 |
|
|
|
| 2392 |
|
|
sx_release_drivers();
|
| 2393 |
|
|
for (i = 0; i < SX_NBOARD; i++)
|
| 2394 |
|
|
if (sx_board[i].flags & SX_BOARD_PRESENT)
|
| 2395 |
|
|
sx_release_io_range(&sx_board[i]);
|
| 2396 |
|
|
#ifdef SPECIALIX_TIMER
|
| 2397 |
|
|
del_timer (&missed_irq_timer);
|
| 2398 |
|
|
#endif
|
| 2399 |
|
|
|
| 2400 |
|
|
}
|
| 2401 |
|
|
#endif /* MODULE */
|
