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9d020a2e5f
add_timer() is not supposed to be called when the timer is pending. ip2 driver attempts to avoid that condition by setting and resetting a flag (TimerOn) in timer function. But there is some gap between add_timer() and setting TimerOn. This patch fix this problem by using mod_timer() and remove TimerOn which has been unnecessary by this change. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3206 lines
101 KiB
C
3206 lines
101 KiB
C
/*
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*
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* (c) 1999 by Computone Corporation
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*
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********************************************************************************
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*
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* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport
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* serial I/O controllers.
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*
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* DESCRIPTION: Mainline code for the device driver
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*
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*******************************************************************************/
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// ToDo:
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//
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// Fix the immediate DSS_NOW problem.
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// Work over the channel stats return logic in ip2_ipl_ioctl so they
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// make sense for all 256 possible channels and so the user space
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// utilities will compile and work properly.
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//
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// Done:
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//
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// 1.2.14 /\/\|=mhw=|\/\/
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// Added bounds checking to ip2_ipl_ioctl to avoid potential terroristic acts.
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// Changed the definition of ip2trace to be more consistent with kernel style
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// Thanks to Andreas Dilger <adilger@turbolabs.com> for these updates
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//
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// 1.2.13 /\/\|=mhw=|\/\/
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// DEVFS: Renamed ttf/{n} to tts/F{n} and cuf/{n} to cua/F{n} to conform
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// to agreed devfs serial device naming convention.
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//
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// 1.2.12 /\/\|=mhw=|\/\/
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// Cleaned up some remove queue cut and paste errors
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//
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// 1.2.11 /\/\|=mhw=|\/\/
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// Clean up potential NULL pointer dereferences
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// Clean up devfs registration
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// Add kernel command line parsing for io and irq
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// Compile defaults for io and irq are now set in ip2.c not ip2.h!
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// Reworked poll_only hack for explicit parameter setting
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// You must now EXPLICITLY set poll_only = 1 or set all irqs to 0
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// Merged ip2_loadmain and old_ip2_init
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// Converted all instances of interruptible_sleep_on into queue calls
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// Most of these had no race conditions but better to clean up now
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//
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// 1.2.10 /\/\|=mhw=|\/\/
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// Fixed the bottom half interrupt handler and enabled USE_IQI
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// to split the interrupt handler into a formal top-half / bottom-half
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// Fixed timing window on high speed processors that queued messages to
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// the outbound mail fifo faster than the board could handle.
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//
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// 1.2.9
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// Four box EX was barfing on >128k kmalloc, made structure smaller by
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// reducing output buffer size
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//
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// 1.2.8
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// Device file system support (MHW)
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//
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// 1.2.7
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// Fixed
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// Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules
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//
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// 1.2.6
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//Fixes DCD problems
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// DCD was not reported when CLOCAL was set on call to TIOCMGET
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//
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//Enhancements:
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// TIOCMGET requests and waits for status return
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// No DSS interrupts enabled except for DCD when needed
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//
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// For internal use only
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//
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//#define IP2DEBUG_INIT
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//#define IP2DEBUG_OPEN
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//#define IP2DEBUG_WRITE
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//#define IP2DEBUG_READ
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//#define IP2DEBUG_IOCTL
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//#define IP2DEBUG_IPL
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//#define IP2DEBUG_TRACE
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//#define DEBUG_FIFO
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/************/
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/* Includes */
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/************/
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#include <linux/ctype.h>
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#include <linux/string.h>
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#include <linux/fcntl.h>
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/major.h>
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#include <linux/wait.h>
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#include <linux/device.h>
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#include <linux/smp_lock.h>
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#include <linux/firmware.h>
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#include <linux/platform_device.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/termios.h>
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#include <linux/tty_driver.h>
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#include <linux/serial.h>
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#include <linux/ptrace.h>
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#include <linux/ioport.h>
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#include <linux/cdk.h>
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#include <linux/comstats.h>
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#include <linux/delay.h>
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#include <linux/bitops.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <linux/vmalloc.h>
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#include <linux/init.h>
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#include <asm/uaccess.h>
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#include "ip2types.h"
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#include "ip2trace.h"
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#include "ip2ioctl.h"
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#include "ip2.h"
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#include "i2ellis.h"
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#include "i2lib.h"
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/*****************
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* /proc/ip2mem *
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*****************/
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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static const struct file_operations ip2mem_proc_fops;
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static int ip2_read_proc(char *, char **, off_t, int, int *, void * );
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/********************/
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/* Type Definitions */
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/********************/
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/*************/
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/* Constants */
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/*************/
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/* String constants to identify ourselves */
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static const char pcName[] = "Computone IntelliPort Plus multiport driver";
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static const char pcVersion[] = "1.2.14";
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/* String constants for port names */
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static const char pcDriver_name[] = "ip2";
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static const char pcIpl[] = "ip2ipl";
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/***********************/
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/* Function Prototypes */
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/***********************/
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/* Global module entry functions */
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/* Private (static) functions */
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static int ip2_open(PTTY, struct file *);
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static void ip2_close(PTTY, struct file *);
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static int ip2_write(PTTY, const unsigned char *, int);
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static int ip2_putchar(PTTY, unsigned char);
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static void ip2_flush_chars(PTTY);
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static int ip2_write_room(PTTY);
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static int ip2_chars_in_buf(PTTY);
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static void ip2_flush_buffer(PTTY);
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static int ip2_ioctl(PTTY, struct file *, UINT, ULONG);
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static void ip2_set_termios(PTTY, struct ktermios *);
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static void ip2_set_line_discipline(PTTY);
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static void ip2_throttle(PTTY);
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static void ip2_unthrottle(PTTY);
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static void ip2_stop(PTTY);
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static void ip2_start(PTTY);
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static void ip2_hangup(PTTY);
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static int ip2_tiocmget(struct tty_struct *tty, struct file *file);
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static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear);
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static void set_irq(int, int);
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static void ip2_interrupt_bh(struct work_struct *work);
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static irqreturn_t ip2_interrupt(int irq, void *dev_id);
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static void ip2_poll(unsigned long arg);
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static inline void service_all_boards(void);
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static void do_input(struct work_struct *);
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static void do_status(struct work_struct *);
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static void ip2_wait_until_sent(PTTY,int);
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static void set_params (i2ChanStrPtr, struct ktermios *);
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static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *);
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static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *);
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static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *);
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static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *);
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static long ip2_ipl_ioctl(struct file *, UINT, ULONG);
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static int ip2_ipl_open(struct inode *, struct file *);
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static int DumpTraceBuffer(char __user *, int);
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static int DumpFifoBuffer( char __user *, int);
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static void ip2_init_board(int, const struct firmware *);
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static unsigned short find_eisa_board(int);
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/***************/
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/* Static Data */
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/***************/
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static struct tty_driver *ip2_tty_driver;
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/* Here, then is a table of board pointers which the interrupt routine should
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* scan through to determine who it must service.
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*/
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static unsigned short i2nBoards; // Number of boards here
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static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS];
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static i2ChanStrPtr DevTable[IP2_MAX_PORTS];
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//DevTableMem just used to save addresses for kfree
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static void *DevTableMem[IP2_MAX_BOARDS];
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/* This is the driver descriptor for the ip2ipl device, which is used to
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* download the loadware to the boards.
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*/
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static const struct file_operations ip2_ipl = {
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.owner = THIS_MODULE,
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.read = ip2_ipl_read,
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.write = ip2_ipl_write,
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.unlocked_ioctl = ip2_ipl_ioctl,
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.open = ip2_ipl_open,
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};
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static unsigned long irq_counter;
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static unsigned long bh_counter;
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// Use immediate queue to service interrupts
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#define USE_IQI
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//#define USE_IQ // PCI&2.2 needs work
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/* The timer_list entry for our poll routine. If interrupt operation is not
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* selected, the board is serviced periodically to see if anything needs doing.
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*/
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#define POLL_TIMEOUT (jiffies + 1)
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static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0);
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#ifdef IP2DEBUG_TRACE
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/* Trace (debug) buffer data */
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#define TRACEMAX 1000
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static unsigned long tracebuf[TRACEMAX];
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static int tracestuff;
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static int tracestrip;
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static int tracewrap;
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#endif
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/**********/
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/* Macros */
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/**********/
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#if defined(MODULE) && defined(IP2DEBUG_OPEN)
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#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, ttyc=%d, modc=%x -> %s\n", \
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tty->name,(pCh->flags),ip2_tty_driver->refcount, \
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tty->count,/*GET_USE_COUNT(module)*/0,s)
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#else
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#define DBG_CNT(s)
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#endif
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/********/
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/* Code */
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/********/
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#include "i2ellis.c" /* Extremely low-level interface services */
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#include "i2cmd.c" /* Standard loadware command definitions */
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#include "i2lib.c" /* High level interface services */
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/* Configuration area for modprobe */
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MODULE_AUTHOR("Doug McNash");
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MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
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MODULE_LICENSE("GPL");
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static int poll_only;
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static int Eisa_irq;
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static int Eisa_slot;
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static int iindx;
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static char rirqs[IP2_MAX_BOARDS];
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static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0};
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/* Note: Add compiled in defaults to these arrays, not to the structure
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in ip2.h any longer. That structure WILL get overridden
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by these values, or command line values, or insmod values!!! =mhw=
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*/
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static int io[IP2_MAX_BOARDS];
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static int irq[IP2_MAX_BOARDS] = { -1, -1, -1, -1 };
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MODULE_AUTHOR("Doug McNash");
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MODULE_DESCRIPTION("Computone IntelliPort Plus Driver");
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module_param_array(irq, int, NULL, 0);
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MODULE_PARM_DESC(irq, "Interrupts for IntelliPort Cards");
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module_param_array(io, int, NULL, 0);
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MODULE_PARM_DESC(io, "I/O ports for IntelliPort Cards");
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module_param(poll_only, bool, 0);
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MODULE_PARM_DESC(poll_only, "Do not use card interrupts");
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/* for sysfs class support */
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static struct class *ip2_class;
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/* Some functions to keep track of what irqs we have */
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static int __init is_valid_irq(int irq)
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{
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int *i = Valid_Irqs;
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while (*i != 0 && *i != irq)
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i++;
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return *i;
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}
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static void __init mark_requested_irq(char irq)
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{
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rirqs[iindx++] = irq;
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}
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static int __exit clear_requested_irq(char irq)
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{
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int i;
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for (i = 0; i < IP2_MAX_BOARDS; ++i) {
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if (rirqs[i] == irq) {
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rirqs[i] = 0;
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return 1;
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}
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}
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return 0;
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}
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static int have_requested_irq(char irq)
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{
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/* array init to zeros so 0 irq will not be requested as a side
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* effect */
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int i;
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for (i = 0; i < IP2_MAX_BOARDS; ++i)
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if (rirqs[i] == irq)
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return 1;
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return 0;
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}
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/******************************************************************************/
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/* Function: cleanup_module() */
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/* Parameters: None */
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/* Returns: Nothing */
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/* */
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/* Description: */
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/* This is a required entry point for an installable module. It has to return */
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/* the device and the driver to a passive state. It should not be necessary */
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/* to reset the board fully, especially as the loadware is downloaded */
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/* externally rather than in the driver. We just want to disable the board */
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/* and clear the loadware to a reset state. To allow this there has to be a */
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/* way to detect whether the board has the loadware running at init time to */
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/* handle subsequent installations of the driver. All memory allocated by the */
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/* driver should be returned since it may be unloaded from memory. */
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/******************************************************************************/
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static void __exit ip2_cleanup_module(void)
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{
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int err;
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int i;
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del_timer_sync(&PollTimer);
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/* Reset the boards we have. */
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for (i = 0; i < IP2_MAX_BOARDS; i++)
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if (i2BoardPtrTable[i])
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iiReset(i2BoardPtrTable[i]);
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/* The following is done at most once, if any boards were installed. */
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for (i = 0; i < IP2_MAX_BOARDS; i++) {
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if (i2BoardPtrTable[i]) {
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iiResetDelay(i2BoardPtrTable[i]);
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/* free io addresses and Tibet */
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release_region(ip2config.addr[i], 8);
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device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i));
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device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR,
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4 * i + 1));
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}
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/* Disable and remove interrupt handler. */
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if (ip2config.irq[i] > 0 &&
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have_requested_irq(ip2config.irq[i])) {
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free_irq(ip2config.irq[i], (void *)&pcName);
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clear_requested_irq(ip2config.irq[i]);
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}
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}
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class_destroy(ip2_class);
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err = tty_unregister_driver(ip2_tty_driver);
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if (err)
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printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n",
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err);
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put_tty_driver(ip2_tty_driver);
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unregister_chrdev(IP2_IPL_MAJOR, pcIpl);
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remove_proc_entry("ip2mem", NULL);
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/* free memory */
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for (i = 0; i < IP2_MAX_BOARDS; i++) {
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void *pB;
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#ifdef CONFIG_PCI
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if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) {
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pci_disable_device(ip2config.pci_dev[i]);
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pci_dev_put(ip2config.pci_dev[i]);
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ip2config.pci_dev[i] = NULL;
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}
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#endif
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pB = i2BoardPtrTable[i];
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if (pB != NULL) {
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kfree(pB);
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i2BoardPtrTable[i] = NULL;
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}
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if (DevTableMem[i] != NULL) {
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kfree(DevTableMem[i]);
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DevTableMem[i] = NULL;
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}
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}
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}
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module_exit(ip2_cleanup_module);
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static const struct tty_operations ip2_ops = {
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.open = ip2_open,
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.close = ip2_close,
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.write = ip2_write,
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.put_char = ip2_putchar,
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.flush_chars = ip2_flush_chars,
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.write_room = ip2_write_room,
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.chars_in_buffer = ip2_chars_in_buf,
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.flush_buffer = ip2_flush_buffer,
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.ioctl = ip2_ioctl,
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.throttle = ip2_throttle,
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.unthrottle = ip2_unthrottle,
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.set_termios = ip2_set_termios,
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.set_ldisc = ip2_set_line_discipline,
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.stop = ip2_stop,
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.start = ip2_start,
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.hangup = ip2_hangup,
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.read_proc = ip2_read_proc,
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.tiocmget = ip2_tiocmget,
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.tiocmset = ip2_tiocmset,
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};
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/******************************************************************************/
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/* Function: ip2_loadmain() */
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/* Parameters: irq, io from command line of insmod et. al. */
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/* pointer to fip firmware and firmware size for boards */
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/* Returns: Success (0) */
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/* */
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/* Description: */
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/* This was the required entry point for all drivers (now in ip2.c) */
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/* It performs all */
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/* initialisation of the devices and driver structures, and registers itself */
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/* with the relevant kernel modules. */
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/******************************************************************************/
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/* IRQF_DISABLED - if set blocks all interrupts else only this line */
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/* IRQF_SHARED - for shared irq PCI or maybe EISA only */
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/* SA_RANDOM - can be source for cert. random number generators */
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#define IP2_SA_FLAGS 0
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static const struct firmware *ip2_request_firmware(void)
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{
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struct platform_device *pdev;
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const struct firmware *fw;
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pdev = platform_device_register_simple("ip2", 0, NULL, 0);
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if (IS_ERR(pdev)) {
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printk(KERN_ERR "Failed to register platform device for ip2\n");
|
|
return NULL;
|
|
}
|
|
if (request_firmware(&fw, "intelliport2.bin", &pdev->dev)) {
|
|
printk(KERN_ERR "Failed to load firmware 'intelliport2.bin'\n");
|
|
fw = NULL;
|
|
}
|
|
platform_device_unregister(pdev);
|
|
return fw;
|
|
}
|
|
|
|
#ifndef MODULE
|
|
/******************************************************************************
|
|
* ip2_setup:
|
|
* str: kernel command line string
|
|
*
|
|
* Can't autoprobe the boards so user must specify configuration on
|
|
* kernel command line. Sane people build it modular but the others
|
|
* come here.
|
|
*
|
|
* Alternating pairs of io,irq for up to 4 boards.
|
|
* ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3
|
|
*
|
|
* io=0 => No board
|
|
* io=1 => PCI
|
|
* io=2 => EISA
|
|
* else => ISA I/O address
|
|
*
|
|
* irq=0 or invalid for ISA will revert to polling mode
|
|
*
|
|
* Any value = -1, do not overwrite compiled in value.
|
|
*
|
|
******************************************************************************/
|
|
static int __init ip2_setup(char *str)
|
|
{
|
|
int j, ints[10]; /* 4 boards, 2 parameters + 2 */
|
|
unsigned int i;
|
|
|
|
str = get_options(str, ARRAY_SIZE(ints), ints);
|
|
|
|
for (i = 0, j = 1; i < 4; i++) {
|
|
if (j > ints[0])
|
|
break;
|
|
if (ints[j] >= 0)
|
|
io[i] = ints[j];
|
|
j++;
|
|
if (j > ints[0])
|
|
break;
|
|
if (ints[j] >= 0)
|
|
irq[i] = ints[j];
|
|
j++;
|
|
}
|
|
return 1;
|
|
}
|
|
__setup("ip2=", ip2_setup);
|
|
#endif /* !MODULE */
|
|
|
|
static int __init ip2_loadmain(void)
|
|
{
|
|
int i, j, box;
|
|
int err = 0;
|
|
i2eBordStrPtr pB = NULL;
|
|
int rc = -1;
|
|
struct pci_dev *pdev = NULL;
|
|
const struct firmware *fw = NULL;
|
|
|
|
if (poll_only) {
|
|
/* Hard lock the interrupts to zero */
|
|
irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0;
|
|
}
|
|
|
|
ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0);
|
|
|
|
/* process command line arguments to modprobe or
|
|
insmod i.e. iop & irqp */
|
|
/* irqp and iop should ALWAYS be specified now... But we check
|
|
them individually just to be sure, anyways... */
|
|
for (i = 0; i < IP2_MAX_BOARDS; ++i) {
|
|
ip2config.addr[i] = io[i];
|
|
if (irq[i] >= 0)
|
|
ip2config.irq[i] = irq[i];
|
|
else
|
|
ip2config.irq[i] = 0;
|
|
/* This is a little bit of a hack. If poll_only=1 on command
|
|
line back in ip2.c OR all IRQs on all specified boards are
|
|
explicitly set to 0, then drop to poll only mode and override
|
|
PCI or EISA interrupts. This superceeds the old hack of
|
|
triggering if all interrupts were zero (like da default).
|
|
Still a hack but less prone to random acts of terrorism.
|
|
|
|
What we really should do, now that the IRQ default is set
|
|
to -1, is to use 0 as a hard coded, do not probe.
|
|
|
|
/\/\|=mhw=|\/\/
|
|
*/
|
|
poll_only |= irq[i];
|
|
}
|
|
poll_only = !poll_only;
|
|
|
|
/* Announce our presence */
|
|
printk(KERN_INFO "%s version %s\n", pcName, pcVersion);
|
|
|
|
ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS);
|
|
if (!ip2_tty_driver)
|
|
return -ENOMEM;
|
|
|
|
/* Initialise all the boards we can find (up to the maximum). */
|
|
for (i = 0; i < IP2_MAX_BOARDS; ++i) {
|
|
switch (ip2config.addr[i]) {
|
|
case 0: /* skip this slot even if card is present */
|
|
break;
|
|
default: /* ISA */
|
|
/* ISA address must be specified */
|
|
if (ip2config.addr[i] < 0x100 ||
|
|
ip2config.addr[i] > 0x3f8) {
|
|
printk(KERN_ERR "IP2: Bad ISA board %d "
|
|
"address %x\n", i,
|
|
ip2config.addr[i]);
|
|
ip2config.addr[i] = 0;
|
|
break;
|
|
}
|
|
ip2config.type[i] = ISA;
|
|
|
|
/* Check for valid irq argument, set for polling if
|
|
* invalid */
|
|
if (ip2config.irq[i] &&
|
|
!is_valid_irq(ip2config.irq[i])) {
|
|
printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",
|
|
ip2config.irq[i]);
|
|
/* 0 is polling and is valid in that sense */
|
|
ip2config.irq[i] = 0;
|
|
}
|
|
break;
|
|
case PCI:
|
|
#ifdef CONFIG_PCI
|
|
{
|
|
u32 addr;
|
|
int status;
|
|
|
|
pdev = pci_get_device(PCI_VENDOR_ID_COMPUTONE,
|
|
PCI_DEVICE_ID_COMPUTONE_IP2EX, pdev);
|
|
if (pdev == NULL) {
|
|
ip2config.addr[i] = 0;
|
|
printk(KERN_ERR "IP2: PCI board %d not "
|
|
"found\n", i);
|
|
break;
|
|
}
|
|
|
|
if (pci_enable_device(pdev)) {
|
|
dev_err(&pdev->dev, "can't enable device\n");
|
|
break;
|
|
}
|
|
ip2config.type[i] = PCI;
|
|
ip2config.pci_dev[i] = pci_dev_get(pdev);
|
|
status = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_1,
|
|
&addr);
|
|
if (addr & 1)
|
|
ip2config.addr[i] = (USHORT)(addr & 0xfffe);
|
|
else
|
|
dev_err(&pdev->dev, "I/O address error\n");
|
|
|
|
ip2config.irq[i] = pdev->irq;
|
|
}
|
|
#else
|
|
printk(KERN_ERR "IP2: PCI card specified but PCI "
|
|
"support not enabled.\n");
|
|
printk(KERN_ERR "IP2: Recompile kernel with CONFIG_PCI "
|
|
"defined!\n");
|
|
#endif /* CONFIG_PCI */
|
|
break;
|
|
case EISA:
|
|
ip2config.addr[i] = find_eisa_board(Eisa_slot + 1);
|
|
if (ip2config.addr[i] != 0) {
|
|
/* Eisa_irq set as side effect, boo */
|
|
ip2config.type[i] = EISA;
|
|
}
|
|
ip2config.irq[i] = Eisa_irq;
|
|
break;
|
|
} /* switch */
|
|
} /* for */
|
|
pci_dev_put(pdev);
|
|
|
|
for (i = 0; i < IP2_MAX_BOARDS; ++i) {
|
|
if (ip2config.addr[i]) {
|
|
pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL);
|
|
if (pB) {
|
|
i2BoardPtrTable[i] = pB;
|
|
iiSetAddress(pB, ip2config.addr[i],
|
|
ii2DelayTimer);
|
|
iiReset(pB);
|
|
} else
|
|
printk(KERN_ERR "IP2: board memory allocation "
|
|
"error\n");
|
|
}
|
|
}
|
|
for (i = 0; i < IP2_MAX_BOARDS; ++i) {
|
|
pB = i2BoardPtrTable[i];
|
|
if (pB != NULL) {
|
|
iiResetDelay(pB);
|
|
break;
|
|
}
|
|
}
|
|
for (i = 0; i < IP2_MAX_BOARDS; ++i) {
|
|
/* We don't want to request the firmware unless we have at
|
|
least one board */
|
|
if (i2BoardPtrTable[i] != NULL) {
|
|
if (!fw)
|
|
fw = ip2_request_firmware();
|
|
if (!fw)
|
|
break;
|
|
ip2_init_board(i, fw);
|
|
}
|
|
}
|
|
if (fw)
|
|
release_firmware(fw);
|
|
|
|
ip2trace(ITRC_NO_PORT, ITRC_INIT, 2, 0);
|
|
|
|
ip2_tty_driver->owner = THIS_MODULE;
|
|
ip2_tty_driver->name = "ttyF";
|
|
ip2_tty_driver->driver_name = pcDriver_name;
|
|
ip2_tty_driver->major = IP2_TTY_MAJOR;
|
|
ip2_tty_driver->minor_start = 0;
|
|
ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
|
|
ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL;
|
|
ip2_tty_driver->init_termios = tty_std_termios;
|
|
ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL;
|
|
ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW |
|
|
TTY_DRIVER_DYNAMIC_DEV;
|
|
tty_set_operations(ip2_tty_driver, &ip2_ops);
|
|
|
|
ip2trace(ITRC_NO_PORT, ITRC_INIT, 3, 0);
|
|
|
|
err = tty_register_driver(ip2_tty_driver);
|
|
if (err) {
|
|
printk(KERN_ERR "IP2: failed to register tty driver\n");
|
|
put_tty_driver(ip2_tty_driver);
|
|
return err; /* leaking resources */
|
|
}
|
|
|
|
err = register_chrdev(IP2_IPL_MAJOR, pcIpl, &ip2_ipl);
|
|
if (err) {
|
|
printk(KERN_ERR "IP2: failed to register IPL device (%d)\n",
|
|
err);
|
|
} else {
|
|
/* create the sysfs class */
|
|
ip2_class = class_create(THIS_MODULE, "ip2");
|
|
if (IS_ERR(ip2_class)) {
|
|
err = PTR_ERR(ip2_class);
|
|
goto out_chrdev;
|
|
}
|
|
}
|
|
/* Register the read_procmem thing */
|
|
if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) {
|
|
printk(KERN_ERR "IP2: failed to register read_procmem\n");
|
|
return -EIO; /* leaking resources */
|
|
}
|
|
|
|
ip2trace(ITRC_NO_PORT, ITRC_INIT, 4, 0);
|
|
/* Register the interrupt handler or poll handler, depending upon the
|
|
* specified interrupt.
|
|
*/
|
|
|
|
for (i = 0; i < IP2_MAX_BOARDS; ++i) {
|
|
if (ip2config.addr[i] == 0)
|
|
continue;
|
|
|
|
pB = i2BoardPtrTable[i];
|
|
if (pB != NULL) {
|
|
device_create_drvdata(ip2_class, NULL,
|
|
MKDEV(IP2_IPL_MAJOR, 4 * i),
|
|
NULL, "ipl%d", i);
|
|
device_create_drvdata(ip2_class, NULL,
|
|
MKDEV(IP2_IPL_MAJOR, 4 * i + 1),
|
|
NULL, "stat%d", i);
|
|
|
|
for (box = 0; box < ABS_MAX_BOXES; box++)
|
|
for (j = 0; j < ABS_BIGGEST_BOX; j++)
|
|
if (pB->i2eChannelMap[box] & (1 << j))
|
|
tty_register_device(
|
|
ip2_tty_driver,
|
|
j + ABS_BIGGEST_BOX *
|
|
(box+i*ABS_MAX_BOXES),
|
|
NULL);
|
|
}
|
|
|
|
if (poll_only) {
|
|
/* Poll only forces driver to only use polling and
|
|
to ignore the probed PCI or EISA interrupts. */
|
|
ip2config.irq[i] = CIR_POLL;
|
|
}
|
|
if (ip2config.irq[i] == CIR_POLL) {
|
|
retry:
|
|
if (!timer_pending(&PollTimer)) {
|
|
mod_timer(&PollTimer, POLL_TIMEOUT);
|
|
printk(KERN_INFO "IP2: polling\n");
|
|
}
|
|
} else {
|
|
if (have_requested_irq(ip2config.irq[i]))
|
|
continue;
|
|
rc = request_irq(ip2config.irq[i], ip2_interrupt,
|
|
IP2_SA_FLAGS |
|
|
(ip2config.type[i] == PCI ? IRQF_SHARED : 0),
|
|
pcName, i2BoardPtrTable[i]);
|
|
if (rc) {
|
|
printk(KERN_ERR "IP2: request_irq failed: "
|
|
"error %d\n", rc);
|
|
ip2config.irq[i] = CIR_POLL;
|
|
printk(KERN_INFO "IP2: Polling %ld/sec.\n",
|
|
(POLL_TIMEOUT - jiffies));
|
|
goto retry;
|
|
}
|
|
mark_requested_irq(ip2config.irq[i]);
|
|
/* Initialise the interrupt handler bottom half
|
|
* (aka slih). */
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < IP2_MAX_BOARDS; ++i) {
|
|
if (i2BoardPtrTable[i]) {
|
|
/* set and enable board interrupt */
|
|
set_irq(i, ip2config.irq[i]);
|
|
}
|
|
}
|
|
|
|
ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0);
|
|
|
|
return 0;
|
|
|
|
out_chrdev:
|
|
unregister_chrdev(IP2_IPL_MAJOR, "ip2");
|
|
/* unregister and put tty here */
|
|
return err;
|
|
}
|
|
module_init(ip2_loadmain);
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_init_board() */
|
|
/* Parameters: Index of board in configuration structure */
|
|
/* Returns: Success (0) */
|
|
/* */
|
|
/* Description: */
|
|
/* This function initializes the specified board. The loadware is copied to */
|
|
/* the board, the channel structures are initialized, and the board details */
|
|
/* are reported on the console. */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_init_board(int boardnum, const struct firmware *fw)
|
|
{
|
|
int i;
|
|
int nports = 0, nboxes = 0;
|
|
i2ChanStrPtr pCh;
|
|
i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
|
|
|
|
if ( !iiInitialize ( pB ) ) {
|
|
printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n",
|
|
pB->i2eBase, pB->i2eError );
|
|
goto err_initialize;
|
|
}
|
|
printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1,
|
|
ip2config.addr[boardnum], ip2config.irq[boardnum] );
|
|
|
|
if (!request_region( ip2config.addr[boardnum], 8, pcName )) {
|
|
printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]);
|
|
goto err_initialize;
|
|
}
|
|
|
|
if ( iiDownloadAll ( pB, (loadHdrStrPtr)fw->data, 1, fw->size )
|
|
!= II_DOWN_GOOD ) {
|
|
printk ( KERN_ERR "IP2: failed to download loadware\n" );
|
|
goto err_release_region;
|
|
} else {
|
|
printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n",
|
|
pB->i2ePom.e.porVersion,
|
|
pB->i2ePom.e.porRevision,
|
|
pB->i2ePom.e.porSubRev, pB->i2eLVersion,
|
|
pB->i2eLRevision, pB->i2eLSub );
|
|
}
|
|
|
|
switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) {
|
|
|
|
default:
|
|
printk( KERN_ERR "IP2: Unknown board type, ID = %x\n",
|
|
pB->i2ePom.e.porID );
|
|
nports = 0;
|
|
goto err_release_region;
|
|
break;
|
|
|
|
case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */
|
|
printk ( KERN_INFO "IP2: ISA-4\n" );
|
|
nports = 4;
|
|
break;
|
|
|
|
case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */
|
|
printk ( KERN_INFO "IP2: ISA-8 std\n" );
|
|
nports = 8;
|
|
break;
|
|
|
|
case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */
|
|
printk ( KERN_INFO "IP2: ISA-8 RJ11\n" );
|
|
nports = 8;
|
|
break;
|
|
|
|
case POR_ID_FIIEX: /* IntelliPort IIEX */
|
|
{
|
|
int portnum = IP2_PORTS_PER_BOARD * boardnum;
|
|
int box;
|
|
|
|
for( box = 0; box < ABS_MAX_BOXES; ++box ) {
|
|
if ( pB->i2eChannelMap[box] != 0 ) {
|
|
++nboxes;
|
|
}
|
|
for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
|
|
if ( pB->i2eChannelMap[box] & 1<< i ) {
|
|
++nports;
|
|
}
|
|
}
|
|
}
|
|
DevTableMem[boardnum] = pCh =
|
|
kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL );
|
|
if ( !pCh ) {
|
|
printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
|
|
goto err_release_region;
|
|
}
|
|
if ( !i2InitChannels( pB, nports, pCh ) ) {
|
|
printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
|
|
kfree ( pCh );
|
|
goto err_release_region;
|
|
}
|
|
pB->i2eChannelPtr = &DevTable[portnum];
|
|
pB->i2eChannelCnt = ABS_MOST_PORTS;
|
|
|
|
for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) {
|
|
for( i = 0; i < ABS_BIGGEST_BOX; ++i ) {
|
|
if ( pB->i2eChannelMap[box] & (1 << i) ) {
|
|
DevTable[portnum + i] = pCh;
|
|
pCh->port_index = portnum + i;
|
|
pCh++;
|
|
}
|
|
}
|
|
}
|
|
printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n",
|
|
nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 );
|
|
}
|
|
goto ex_exit;
|
|
}
|
|
DevTableMem[boardnum] = pCh =
|
|
kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL );
|
|
if ( !pCh ) {
|
|
printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n");
|
|
goto err_release_region;
|
|
}
|
|
pB->i2eChannelPtr = pCh;
|
|
pB->i2eChannelCnt = nports;
|
|
if ( !i2InitChannels( pB, nports, pCh ) ) {
|
|
printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError);
|
|
kfree ( pCh );
|
|
goto err_release_region;
|
|
}
|
|
pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum];
|
|
|
|
for( i = 0; i < pB->i2eChannelCnt; ++i ) {
|
|
DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh;
|
|
pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i;
|
|
pCh++;
|
|
}
|
|
ex_exit:
|
|
INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh);
|
|
return;
|
|
|
|
err_release_region:
|
|
release_region(ip2config.addr[boardnum], 8);
|
|
err_initialize:
|
|
kfree ( pB );
|
|
i2BoardPtrTable[boardnum] = NULL;
|
|
return;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: find_eisa_board ( int start_slot ) */
|
|
/* Parameters: First slot to check */
|
|
/* Returns: Address of EISA IntelliPort II controller */
|
|
/* */
|
|
/* Description: */
|
|
/* This function searches for an EISA IntelliPort controller, starting */
|
|
/* from the specified slot number. If the motherboard is not identified as an */
|
|
/* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */
|
|
/* it returns the base address of the controller. */
|
|
/******************************************************************************/
|
|
static unsigned short
|
|
find_eisa_board( int start_slot )
|
|
{
|
|
int i, j;
|
|
unsigned int idm = 0;
|
|
unsigned int idp = 0;
|
|
unsigned int base = 0;
|
|
unsigned int value;
|
|
int setup_address;
|
|
int setup_irq;
|
|
int ismine = 0;
|
|
|
|
/*
|
|
* First a check for an EISA motherboard, which we do by comparing the
|
|
* EISA ID registers for the system board and the first couple of slots.
|
|
* No slot ID should match the system board ID, but on an ISA or PCI
|
|
* machine the odds are that an empty bus will return similar values for
|
|
* each slot.
|
|
*/
|
|
i = 0x0c80;
|
|
value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3);
|
|
for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) {
|
|
j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3);
|
|
if ( value == j )
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* OK, so we are inclined to believe that this is an EISA machine. Find
|
|
* an IntelliPort controller.
|
|
*/
|
|
for( i = start_slot; i < 16; i++ ) {
|
|
base = i << 12;
|
|
idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff);
|
|
idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff);
|
|
ismine = 0;
|
|
if ( idm == 0x0e8e ) {
|
|
if ( idp == 0x0281 || idp == 0x0218 ) {
|
|
ismine = 1;
|
|
} else if ( idp == 0x0282 || idp == 0x0283 ) {
|
|
ismine = 3; /* Can do edge-trigger */
|
|
}
|
|
if ( ismine ) {
|
|
Eisa_slot = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if ( !ismine )
|
|
return 0;
|
|
|
|
/* It's some sort of EISA card, but at what address is it configured? */
|
|
|
|
setup_address = base + 0xc88;
|
|
value = inb(base + 0xc86);
|
|
setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0;
|
|
|
|
if ( (ismine & 2) && !(value & 0x10) ) {
|
|
ismine = 1; /* Could be edging, but not */
|
|
}
|
|
|
|
if ( Eisa_irq == 0 ) {
|
|
Eisa_irq = setup_irq;
|
|
} else if ( Eisa_irq != setup_irq ) {
|
|
printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" );
|
|
}
|
|
|
|
#ifdef IP2DEBUG_INIT
|
|
printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x",
|
|
base >> 12, idm, idp, setup_address);
|
|
if ( Eisa_irq ) {
|
|
printk(KERN_DEBUG ", Interrupt %d %s\n",
|
|
setup_irq, (ismine & 2) ? "(edge)" : "(level)");
|
|
} else {
|
|
printk(KERN_DEBUG ", (polled)\n");
|
|
}
|
|
#endif
|
|
return setup_address;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: set_irq() */
|
|
/* Parameters: index to board in board table */
|
|
/* IRQ to use */
|
|
/* Returns: Success (0) */
|
|
/* */
|
|
/* Description: */
|
|
/******************************************************************************/
|
|
static void
|
|
set_irq( int boardnum, int boardIrq )
|
|
{
|
|
unsigned char tempCommand[16];
|
|
i2eBordStrPtr pB = i2BoardPtrTable[boardnum];
|
|
unsigned long flags;
|
|
|
|
/*
|
|
* Notify the boards they may generate interrupts. This is done by
|
|
* sending an in-line command to channel 0 on each board. This is why
|
|
* the channels have to be defined already. For each board, if the
|
|
* interrupt has never been defined, we must do so NOW, directly, since
|
|
* board will not send flow control or even give an interrupt until this
|
|
* is done. If polling we must send 0 as the interrupt parameter.
|
|
*/
|
|
|
|
// We will get an interrupt here at the end of this function
|
|
|
|
iiDisableMailIrq(pB);
|
|
|
|
/* We build up the entire packet header. */
|
|
CHANNEL_OF(tempCommand) = 0;
|
|
PTYPE_OF(tempCommand) = PTYPE_INLINE;
|
|
CMD_COUNT_OF(tempCommand) = 2;
|
|
(CMD_OF(tempCommand))[0] = CMDVALUE_IRQ;
|
|
(CMD_OF(tempCommand))[1] = boardIrq;
|
|
/*
|
|
* Write to FIFO; don't bother to adjust fifo capacity for this, since
|
|
* board will respond almost immediately after SendMail hit.
|
|
*/
|
|
write_lock_irqsave(&pB->write_fifo_spinlock, flags);
|
|
iiWriteBuf(pB, tempCommand, 4);
|
|
write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
|
|
pB->i2eUsingIrq = boardIrq;
|
|
pB->i2eOutMailWaiting |= MB_OUT_STUFFED;
|
|
|
|
/* Need to update number of boards before you enable mailbox int */
|
|
++i2nBoards;
|
|
|
|
CHANNEL_OF(tempCommand) = 0;
|
|
PTYPE_OF(tempCommand) = PTYPE_BYPASS;
|
|
CMD_COUNT_OF(tempCommand) = 6;
|
|
(CMD_OF(tempCommand))[0] = 88; // SILO
|
|
(CMD_OF(tempCommand))[1] = 64; // chars
|
|
(CMD_OF(tempCommand))[2] = 32; // ms
|
|
|
|
(CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK
|
|
(CMD_OF(tempCommand))[4] = 64; // chars
|
|
|
|
(CMD_OF(tempCommand))[5] = 87; // HW_TEST
|
|
write_lock_irqsave(&pB->write_fifo_spinlock, flags);
|
|
iiWriteBuf(pB, tempCommand, 8);
|
|
write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
|
|
|
|
CHANNEL_OF(tempCommand) = 0;
|
|
PTYPE_OF(tempCommand) = PTYPE_BYPASS;
|
|
CMD_COUNT_OF(tempCommand) = 1;
|
|
(CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */
|
|
iiWriteBuf(pB, tempCommand, 3);
|
|
|
|
#ifdef XXX
|
|
// enable heartbeat for test porpoises
|
|
CHANNEL_OF(tempCommand) = 0;
|
|
PTYPE_OF(tempCommand) = PTYPE_BYPASS;
|
|
CMD_COUNT_OF(tempCommand) = 2;
|
|
(CMD_OF(tempCommand))[0] = 44; /* get ping */
|
|
(CMD_OF(tempCommand))[1] = 200; /* 200 ms */
|
|
write_lock_irqsave(&pB->write_fifo_spinlock, flags);
|
|
iiWriteBuf(pB, tempCommand, 4);
|
|
write_unlock_irqrestore(&pB->write_fifo_spinlock, flags);
|
|
#endif
|
|
|
|
iiEnableMailIrq(pB);
|
|
iiSendPendingMail(pB);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Interrupt Handler Section */
|
|
/******************************************************************************/
|
|
|
|
static inline void
|
|
service_all_boards(void)
|
|
{
|
|
int i;
|
|
i2eBordStrPtr pB;
|
|
|
|
/* Service every board on the list */
|
|
for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
|
|
pB = i2BoardPtrTable[i];
|
|
if ( pB ) {
|
|
i2ServiceBoard( pB );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_interrupt_bh(work) */
|
|
/* Parameters: work - pointer to the board structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* Service the board in a bottom half interrupt handler and then */
|
|
/* reenable the board's interrupts if it has an IRQ number */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_interrupt_bh(struct work_struct *work)
|
|
{
|
|
i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt);
|
|
// pB better well be set or we have a problem! We can only get
|
|
// here from the IMMEDIATE queue. Here, we process the boards.
|
|
// Checking pB doesn't cost much and it saves us from the sanity checkers.
|
|
|
|
bh_counter++;
|
|
|
|
if ( pB ) {
|
|
i2ServiceBoard( pB );
|
|
if( pB->i2eUsingIrq ) {
|
|
// Re-enable his interrupts
|
|
iiEnableMailIrq(pB);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_interrupt(int irq, void *dev_id) */
|
|
/* Parameters: irq - interrupt number */
|
|
/* pointer to optional device ID structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* Our task here is simply to identify each board which needs servicing. */
|
|
/* If we are queuing then, queue it to be serviced, and disable its irq */
|
|
/* mask otherwise process the board directly. */
|
|
/* */
|
|
/* We could queue by IRQ but that just complicates things on both ends */
|
|
/* with very little gain in performance (how many instructions does */
|
|
/* it take to iterate on the immediate queue). */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_irq_work(i2eBordStrPtr pB)
|
|
{
|
|
#ifdef USE_IQI
|
|
if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) {
|
|
// Disable his interrupt (will be enabled when serviced)
|
|
// This is mostly to protect from reentrancy.
|
|
iiDisableMailIrq(pB);
|
|
|
|
// Park the board on the immediate queue for processing.
|
|
schedule_work(&pB->tqueue_interrupt);
|
|
|
|
// Make sure the immediate queue is flagged to fire.
|
|
}
|
|
#else
|
|
|
|
// We are using immediate servicing here. This sucks and can
|
|
// cause all sorts of havoc with ppp and others. The failsafe
|
|
// check on iiSendPendingMail could also throw a hairball.
|
|
|
|
i2ServiceBoard( pB );
|
|
|
|
#endif /* USE_IQI */
|
|
}
|
|
|
|
static void
|
|
ip2_polled_interrupt(void)
|
|
{
|
|
int i;
|
|
i2eBordStrPtr pB;
|
|
|
|
ip2trace(ITRC_NO_PORT, ITRC_INTR, 99, 1, 0);
|
|
|
|
/* Service just the boards on the list using this irq */
|
|
for( i = 0; i < i2nBoards; ++i ) {
|
|
pB = i2BoardPtrTable[i];
|
|
|
|
// Only process those boards which match our IRQ.
|
|
// IRQ = 0 for polled boards, we won't poll "IRQ" boards
|
|
|
|
if (pB && pB->i2eUsingIrq == 0)
|
|
ip2_irq_work(pB);
|
|
}
|
|
|
|
++irq_counter;
|
|
|
|
ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
|
|
}
|
|
|
|
static irqreturn_t
|
|
ip2_interrupt(int irq, void *dev_id)
|
|
{
|
|
i2eBordStrPtr pB = dev_id;
|
|
|
|
ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq );
|
|
|
|
ip2_irq_work(pB);
|
|
|
|
++irq_counter;
|
|
|
|
ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_poll(unsigned long arg) */
|
|
/* Parameters: ? */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* This function calls the library routine i2ServiceBoard for each board in */
|
|
/* the board table. This is used instead of the interrupt routine when polled */
|
|
/* mode is specified. */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_poll(unsigned long arg)
|
|
{
|
|
ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 );
|
|
|
|
// Just polled boards, IRQ = 0 will hit all non-interrupt boards.
|
|
// It will NOT poll boards handled by hard interrupts.
|
|
// The issue of queued BH interrupts is handled in ip2_interrupt().
|
|
ip2_polled_interrupt();
|
|
|
|
mod_timer(&PollTimer, POLL_TIMEOUT);
|
|
|
|
ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 );
|
|
}
|
|
|
|
static void do_input(struct work_struct *work)
|
|
{
|
|
i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input);
|
|
unsigned long flags;
|
|
|
|
ip2trace(CHANN, ITRC_INPUT, 21, 0 );
|
|
|
|
// Data input
|
|
if ( pCh->pTTY != NULL ) {
|
|
read_lock_irqsave(&pCh->Ibuf_spinlock, flags);
|
|
if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) {
|
|
read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
|
|
i2Input( pCh );
|
|
} else
|
|
read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
|
|
} else {
|
|
ip2trace(CHANN, ITRC_INPUT, 22, 0 );
|
|
|
|
i2InputFlush( pCh );
|
|
}
|
|
}
|
|
|
|
// code duplicated from n_tty (ldisc)
|
|
static inline void isig(int sig, struct tty_struct *tty, int flush)
|
|
{
|
|
/* FIXME: This is completely bogus */
|
|
if (tty->pgrp)
|
|
kill_pgrp(tty->pgrp, sig, 1);
|
|
if (flush || !L_NOFLSH(tty)) {
|
|
if ( tty->ldisc.ops->flush_buffer )
|
|
tty->ldisc.ops->flush_buffer(tty);
|
|
i2InputFlush( tty->driver_data );
|
|
}
|
|
}
|
|
|
|
static void do_status(struct work_struct *work)
|
|
{
|
|
i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status);
|
|
int status;
|
|
|
|
status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) );
|
|
|
|
ip2trace (CHANN, ITRC_STATUS, 21, 1, status );
|
|
|
|
if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) {
|
|
if ( (status & I2_BRK) ) {
|
|
// code duplicated from n_tty (ldisc)
|
|
if (I_IGNBRK(pCh->pTTY))
|
|
goto skip_this;
|
|
if (I_BRKINT(pCh->pTTY)) {
|
|
isig(SIGINT, pCh->pTTY, 1);
|
|
goto skip_this;
|
|
}
|
|
wake_up_interruptible(&pCh->pTTY->read_wait);
|
|
}
|
|
#ifdef NEVER_HAPPENS_AS_SETUP_XXX
|
|
// and can't work because we don't know the_char
|
|
// as the_char is reported on a separate path
|
|
// The intelligent board does this stuff as setup
|
|
{
|
|
char brkf = TTY_NORMAL;
|
|
unsigned char brkc = '\0';
|
|
unsigned char tmp;
|
|
if ( (status & I2_BRK) ) {
|
|
brkf = TTY_BREAK;
|
|
brkc = '\0';
|
|
}
|
|
else if (status & I2_PAR) {
|
|
brkf = TTY_PARITY;
|
|
brkc = the_char;
|
|
} else if (status & I2_FRA) {
|
|
brkf = TTY_FRAME;
|
|
brkc = the_char;
|
|
} else if (status & I2_OVR) {
|
|
brkf = TTY_OVERRUN;
|
|
brkc = the_char;
|
|
}
|
|
tmp = pCh->pTTY->real_raw;
|
|
pCh->pTTY->real_raw = 0;
|
|
pCh->pTTY->ldisc->ops.receive_buf( pCh->pTTY, &brkc, &brkf, 1 );
|
|
pCh->pTTY->real_raw = tmp;
|
|
}
|
|
#endif /* NEVER_HAPPENS_AS_SETUP_XXX */
|
|
}
|
|
skip_this:
|
|
|
|
if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) {
|
|
wake_up_interruptible(&pCh->delta_msr_wait);
|
|
|
|
if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) {
|
|
if ( status & I2_DCD ) {
|
|
if ( pCh->wopen ) {
|
|
wake_up_interruptible ( &pCh->open_wait );
|
|
}
|
|
} else {
|
|
if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) {
|
|
tty_hangup( pCh->pTTY );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ip2trace (CHANN, ITRC_STATUS, 26, 0 );
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Device Open/Close/Ioctl Entry Point Section */
|
|
/******************************************************************************/
|
|
|
|
/******************************************************************************/
|
|
/* Function: open_sanity_check() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Pointer to file structure */
|
|
/* Returns: Success or failure */
|
|
/* */
|
|
/* Description: */
|
|
/* Verifies the structure magic numbers and cross links. */
|
|
/******************************************************************************/
|
|
#ifdef IP2DEBUG_OPEN
|
|
static void
|
|
open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd )
|
|
{
|
|
if ( pBrd->i2eValid != I2E_MAGIC ) {
|
|
printk(KERN_ERR "IP2: invalid board structure\n" );
|
|
} else if ( pBrd != pCh->pMyBord ) {
|
|
printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n",
|
|
pCh->pMyBord );
|
|
} else if ( pBrd->i2eChannelCnt < pCh->port_index ) {
|
|
printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index );
|
|
} else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) {
|
|
} else {
|
|
printk(KERN_INFO "IP2: all pointers check out!\n" );
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_open() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Pointer to file structure */
|
|
/* Returns: Success or failure */
|
|
/* */
|
|
/* Description: (MANDATORY) */
|
|
/* A successful device open has to run a gauntlet of checks before it */
|
|
/* completes. After some sanity checking and pointer setup, the function */
|
|
/* blocks until all conditions are satisfied. It then initialises the port to */
|
|
/* the default characteristics and returns. */
|
|
/******************************************************************************/
|
|
static int
|
|
ip2_open( PTTY tty, struct file *pFile )
|
|
{
|
|
wait_queue_t wait;
|
|
int rc = 0;
|
|
int do_clocal = 0;
|
|
i2ChanStrPtr pCh = DevTable[tty->index];
|
|
|
|
ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 );
|
|
|
|
if ( pCh == NULL ) {
|
|
return -ENODEV;
|
|
}
|
|
/* Setup pointer links in device and tty structures */
|
|
pCh->pTTY = tty;
|
|
tty->driver_data = pCh;
|
|
|
|
#ifdef IP2DEBUG_OPEN
|
|
printk(KERN_DEBUG \
|
|
"IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n",
|
|
tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index);
|
|
open_sanity_check ( pCh, pCh->pMyBord );
|
|
#endif
|
|
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP);
|
|
pCh->dataSetOut |= (I2_DTR | I2_RTS);
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
|
|
/* Block here until the port is ready (per serial and istallion) */
|
|
/*
|
|
* 1. If the port is in the middle of closing wait for the completion
|
|
* and then return the appropriate error.
|
|
*/
|
|
init_waitqueue_entry(&wait, current);
|
|
add_wait_queue(&pCh->close_wait, &wait);
|
|
set_current_state( TASK_INTERRUPTIBLE );
|
|
|
|
if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) {
|
|
if ( pCh->flags & ASYNC_CLOSING ) {
|
|
schedule();
|
|
}
|
|
if ( tty_hung_up_p(pFile) ) {
|
|
set_current_state( TASK_RUNNING );
|
|
remove_wait_queue(&pCh->close_wait, &wait);
|
|
return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS;
|
|
}
|
|
}
|
|
set_current_state( TASK_RUNNING );
|
|
remove_wait_queue(&pCh->close_wait, &wait);
|
|
|
|
/*
|
|
* 3. Handle a non-blocking open of a normal port.
|
|
*/
|
|
if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<<TTY_IO_ERROR) )) {
|
|
pCh->flags |= ASYNC_NORMAL_ACTIVE;
|
|
goto noblock;
|
|
}
|
|
/*
|
|
* 4. Now loop waiting for the port to be free and carrier present
|
|
* (if required).
|
|
*/
|
|
if ( tty->termios->c_cflag & CLOCAL )
|
|
do_clocal = 1;
|
|
|
|
#ifdef IP2DEBUG_OPEN
|
|
printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal);
|
|
#endif
|
|
|
|
++pCh->wopen;
|
|
|
|
init_waitqueue_entry(&wait, current);
|
|
add_wait_queue(&pCh->open_wait, &wait);
|
|
|
|
for(;;) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
|
|
pCh->dataSetOut |= (I2_DTR | I2_RTS);
|
|
set_current_state( TASK_INTERRUPTIBLE );
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
if ( tty_hung_up_p(pFile) ) {
|
|
set_current_state( TASK_RUNNING );
|
|
remove_wait_queue(&pCh->open_wait, &wait);
|
|
return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS;
|
|
}
|
|
if (!(pCh->flags & ASYNC_CLOSING) &&
|
|
(do_clocal || (pCh->dataSetIn & I2_DCD) )) {
|
|
rc = 0;
|
|
break;
|
|
}
|
|
|
|
#ifdef IP2DEBUG_OPEN
|
|
printk(KERN_DEBUG "ASYNC_CLOSING = %s\n",
|
|
(pCh->flags & ASYNC_CLOSING)?"True":"False");
|
|
printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n");
|
|
#endif
|
|
ip2trace (CHANN, ITRC_OPEN, 3, 2, 0,
|
|
(pCh->flags & ASYNC_CLOSING) );
|
|
/* check for signal */
|
|
if (signal_pending(current)) {
|
|
rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS);
|
|
break;
|
|
}
|
|
schedule();
|
|
}
|
|
set_current_state( TASK_RUNNING );
|
|
remove_wait_queue(&pCh->open_wait, &wait);
|
|
|
|
--pCh->wopen; //why count?
|
|
|
|
ip2trace (CHANN, ITRC_OPEN, 4, 0 );
|
|
|
|
if (rc != 0 ) {
|
|
return rc;
|
|
}
|
|
pCh->flags |= ASYNC_NORMAL_ACTIVE;
|
|
|
|
noblock:
|
|
|
|
/* first open - Assign termios structure to port */
|
|
if ( tty->count == 1 ) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
|
|
/* Now we must send the termios settings to the loadware */
|
|
set_params( pCh, NULL );
|
|
}
|
|
|
|
/*
|
|
* Now set any i2lib options. These may go away if the i2lib code ends
|
|
* up rolled into the mainline.
|
|
*/
|
|
pCh->channelOptions |= CO_NBLOCK_WRITE;
|
|
|
|
#ifdef IP2DEBUG_OPEN
|
|
printk (KERN_DEBUG "IP2: open completed\n" );
|
|
#endif
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
|
|
ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 );
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_close() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Pointer to file structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_close( PTTY tty, struct file *pFile )
|
|
{
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
|
|
if ( !pCh ) {
|
|
return;
|
|
}
|
|
|
|
ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 );
|
|
|
|
#ifdef IP2DEBUG_OPEN
|
|
printk(KERN_DEBUG "IP2:close %s:\n",tty->name);
|
|
#endif
|
|
|
|
if ( tty_hung_up_p ( pFile ) ) {
|
|
|
|
ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 );
|
|
|
|
return;
|
|
}
|
|
if ( tty->count > 1 ) { /* not the last close */
|
|
|
|
ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 );
|
|
|
|
return;
|
|
}
|
|
pCh->flags |= ASYNC_CLOSING; // last close actually
|
|
|
|
tty->closing = 1;
|
|
|
|
if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) {
|
|
/*
|
|
* Before we drop DTR, make sure the transmitter has completely drained.
|
|
* This uses an timeout, after which the close
|
|
* completes.
|
|
*/
|
|
ip2_wait_until_sent(tty, pCh->ClosingWaitTime );
|
|
}
|
|
/*
|
|
* At this point we stop accepting input. Here we flush the channel
|
|
* input buffer which will allow the board to send up more data. Any
|
|
* additional input is tossed at interrupt/poll time.
|
|
*/
|
|
i2InputFlush( pCh );
|
|
|
|
/* disable DSS reporting */
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 4,
|
|
CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
|
|
if ( !tty || (tty->termios->c_cflag & HUPCL) ) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
|
|
pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
|
|
i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
|
|
}
|
|
|
|
serviceOutgoingFifo ( pCh->pMyBord );
|
|
|
|
tty_ldisc_flush(tty);
|
|
tty_driver_flush_buffer(tty);
|
|
tty->closing = 0;
|
|
|
|
pCh->pTTY = NULL;
|
|
|
|
if (pCh->wopen) {
|
|
if (pCh->ClosingDelay) {
|
|
msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay));
|
|
}
|
|
wake_up_interruptible(&pCh->open_wait);
|
|
}
|
|
|
|
pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
|
|
wake_up_interruptible(&pCh->close_wait);
|
|
|
|
#ifdef IP2DEBUG_OPEN
|
|
DBG_CNT("ip2_close: after wakeups--");
|
|
#endif
|
|
|
|
|
|
ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 );
|
|
|
|
return;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_hangup() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_hangup ( PTTY tty )
|
|
{
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
|
|
if( !pCh ) {
|
|
return;
|
|
}
|
|
|
|
ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 );
|
|
|
|
ip2_flush_buffer(tty);
|
|
|
|
/* disable DSS reporting */
|
|
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP);
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
|
|
if ( (tty->termios->c_cflag & HUPCL) ) {
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN);
|
|
pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
|
|
i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
|
|
}
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 1, 3,
|
|
CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
|
|
serviceOutgoingFifo ( pCh->pMyBord );
|
|
|
|
wake_up_interruptible ( &pCh->delta_msr_wait );
|
|
|
|
pCh->flags &= ~ASYNC_NORMAL_ACTIVE;
|
|
pCh->pTTY = NULL;
|
|
wake_up_interruptible ( &pCh->open_wait );
|
|
|
|
ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 );
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
/* Device Output Section */
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_write() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Flag denoting data is in user (1) or kernel (0) space */
|
|
/* Pointer to data */
|
|
/* Number of bytes to write */
|
|
/* Returns: Number of bytes actually written */
|
|
/* */
|
|
/* Description: (MANDATORY) */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static int
|
|
ip2_write( PTTY tty, const unsigned char *pData, int count)
|
|
{
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
int bytesSent = 0;
|
|
unsigned long flags;
|
|
|
|
ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 );
|
|
|
|
/* Flush out any buffered data left over from ip2_putchar() calls. */
|
|
ip2_flush_chars( tty );
|
|
|
|
/* This is the actual move bit. Make sure it does what we need!!!!! */
|
|
write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
|
|
bytesSent = i2Output( pCh, pData, count);
|
|
write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
|
|
|
|
ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent );
|
|
|
|
return bytesSent > 0 ? bytesSent : 0;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_putchar() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Character to write */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static int
|
|
ip2_putchar( PTTY tty, unsigned char ch )
|
|
{
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
unsigned long flags;
|
|
|
|
// ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch );
|
|
|
|
write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
|
|
pCh->Pbuf[pCh->Pbuf_stuff++] = ch;
|
|
if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) {
|
|
write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
|
|
ip2_flush_chars( tty );
|
|
} else
|
|
write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
|
|
return 1;
|
|
|
|
// ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch );
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_flush_chars() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_flush_chars( PTTY tty )
|
|
{
|
|
int strip;
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
unsigned long flags;
|
|
|
|
write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
|
|
if ( pCh->Pbuf_stuff ) {
|
|
|
|
// ip2trace (CHANN, ITRC_PUTC, 10, 1, strip );
|
|
|
|
//
|
|
// We may need to restart i2Output if it does not fullfill this request
|
|
//
|
|
strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff);
|
|
if ( strip != pCh->Pbuf_stuff ) {
|
|
memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip );
|
|
}
|
|
pCh->Pbuf_stuff -= strip;
|
|
}
|
|
write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_write_room() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Returns: Number of bytes that the driver can accept */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/******************************************************************************/
|
|
static int
|
|
ip2_write_room ( PTTY tty )
|
|
{
|
|
int bytesFree;
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
unsigned long flags;
|
|
|
|
read_lock_irqsave(&pCh->Pbuf_spinlock, flags);
|
|
bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff;
|
|
read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
|
|
|
|
ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree );
|
|
|
|
return ((bytesFree > 0) ? bytesFree : 0);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_chars_in_buf() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Returns: Number of bytes queued for transmission */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static int
|
|
ip2_chars_in_buf ( PTTY tty )
|
|
{
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
int rc;
|
|
unsigned long flags;
|
|
|
|
ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff );
|
|
|
|
#ifdef IP2DEBUG_WRITE
|
|
printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n",
|
|
pCh->Obuf_char_count + pCh->Pbuf_stuff,
|
|
pCh->Obuf_char_count, pCh->Pbuf_stuff );
|
|
#endif
|
|
read_lock_irqsave(&pCh->Obuf_spinlock, flags);
|
|
rc = pCh->Obuf_char_count;
|
|
read_unlock_irqrestore(&pCh->Obuf_spinlock, flags);
|
|
read_lock_irqsave(&pCh->Pbuf_spinlock, flags);
|
|
rc += pCh->Pbuf_stuff;
|
|
read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
|
|
return rc;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_flush_buffer() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_flush_buffer( PTTY tty )
|
|
{
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
unsigned long flags;
|
|
|
|
ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 );
|
|
|
|
#ifdef IP2DEBUG_WRITE
|
|
printk (KERN_DEBUG "IP2: flush buffer\n" );
|
|
#endif
|
|
write_lock_irqsave(&pCh->Pbuf_spinlock, flags);
|
|
pCh->Pbuf_stuff = 0;
|
|
write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags);
|
|
i2FlushOutput( pCh );
|
|
ip2_owake(tty);
|
|
|
|
ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 );
|
|
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_wait_until_sent() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Timeout for wait. */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* This function is used in place of the normal tty_wait_until_sent, which */
|
|
/* only waits for the driver buffers to be empty (or rather, those buffers */
|
|
/* reported by chars_in_buffer) which doesn't work for IP2 due to the */
|
|
/* indeterminate number of bytes buffered on the board. */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_wait_until_sent ( PTTY tty, int timeout )
|
|
{
|
|
int i = jiffies;
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
|
|
tty_wait_until_sent(tty, timeout );
|
|
if ( (i = timeout - (jiffies -i)) > 0)
|
|
i2DrainOutput( pCh, i );
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
/* Device Input Section */
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_throttle() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_throttle ( PTTY tty )
|
|
{
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
|
|
#ifdef IP2DEBUG_READ
|
|
printk (KERN_DEBUG "IP2: throttle\n" );
|
|
#endif
|
|
/*
|
|
* Signal the poll/interrupt handlers not to forward incoming data to
|
|
* the line discipline. This will cause the buffers to fill up in the
|
|
* library and thus cause the library routines to send the flow control
|
|
* stuff.
|
|
*/
|
|
pCh->throttled = 1;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_unthrottle() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_unthrottle ( PTTY tty )
|
|
{
|
|
i2ChanStrPtr pCh = tty->driver_data;
|
|
unsigned long flags;
|
|
|
|
#ifdef IP2DEBUG_READ
|
|
printk (KERN_DEBUG "IP2: unthrottle\n" );
|
|
#endif
|
|
|
|
/* Pass incoming data up to the line discipline again. */
|
|
pCh->throttled = 0;
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
read_lock_irqsave(&pCh->Ibuf_spinlock, flags);
|
|
if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) {
|
|
read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
|
|
#ifdef IP2DEBUG_READ
|
|
printk (KERN_DEBUG "i2Input called from unthrottle\n" );
|
|
#endif
|
|
i2Input( pCh );
|
|
} else
|
|
read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags);
|
|
}
|
|
|
|
static void
|
|
ip2_start ( PTTY tty )
|
|
{
|
|
i2ChanStrPtr pCh = DevTable[tty->index];
|
|
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME);
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND);
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME);
|
|
#ifdef IP2DEBUG_WRITE
|
|
printk (KERN_DEBUG "IP2: start tx\n" );
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
ip2_stop ( PTTY tty )
|
|
{
|
|
i2ChanStrPtr pCh = DevTable[tty->index];
|
|
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND);
|
|
#ifdef IP2DEBUG_WRITE
|
|
printk (KERN_DEBUG "IP2: stop tx\n" );
|
|
#endif
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Device Ioctl Section */
|
|
/******************************************************************************/
|
|
|
|
static int ip2_tiocmget(struct tty_struct *tty, struct file *file)
|
|
{
|
|
i2ChanStrPtr pCh = DevTable[tty->index];
|
|
#ifdef ENABLE_DSSNOW
|
|
wait_queue_t wait;
|
|
#endif
|
|
|
|
if (pCh == NULL)
|
|
return -ENODEV;
|
|
|
|
/*
|
|
FIXME - the following code is causing a NULL pointer dereference in
|
|
2.3.51 in an interrupt handler. It's suppose to prompt the board
|
|
to return the DSS signal status immediately. Why doesn't it do
|
|
the same thing in 2.2.14?
|
|
*/
|
|
|
|
/* This thing is still busted in the 1.2.12 driver on 2.4.x
|
|
and even hoses the serial console so the oops can be trapped.
|
|
/\/\|=mhw=|\/\/ */
|
|
|
|
#ifdef ENABLE_DSSNOW
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW);
|
|
|
|
init_waitqueue_entry(&wait, current);
|
|
add_wait_queue(&pCh->dss_now_wait, &wait);
|
|
set_current_state( TASK_INTERRUPTIBLE );
|
|
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
|
|
schedule();
|
|
|
|
set_current_state( TASK_RUNNING );
|
|
remove_wait_queue(&pCh->dss_now_wait, &wait);
|
|
|
|
if (signal_pending(current)) {
|
|
return -EINTR;
|
|
}
|
|
#endif
|
|
return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0)
|
|
| ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0)
|
|
| ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0)
|
|
| ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0)
|
|
| ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0)
|
|
| ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0);
|
|
}
|
|
|
|
static int ip2_tiocmset(struct tty_struct *tty, struct file *file,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
i2ChanStrPtr pCh = DevTable[tty->index];
|
|
|
|
if (pCh == NULL)
|
|
return -ENODEV;
|
|
|
|
if (set & TIOCM_RTS) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP);
|
|
pCh->dataSetOut |= I2_RTS;
|
|
}
|
|
if (set & TIOCM_DTR) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP);
|
|
pCh->dataSetOut |= I2_DTR;
|
|
}
|
|
|
|
if (clear & TIOCM_RTS) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN);
|
|
pCh->dataSetOut &= ~I2_RTS;
|
|
}
|
|
if (clear & TIOCM_DTR) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN);
|
|
pCh->dataSetOut &= ~I2_DTR;
|
|
}
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_ioctl() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Pointer to file structure */
|
|
/* Command */
|
|
/* Argument */
|
|
/* Returns: Success or failure */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static int
|
|
ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg )
|
|
{
|
|
wait_queue_t wait;
|
|
i2ChanStrPtr pCh = DevTable[tty->index];
|
|
i2eBordStrPtr pB;
|
|
struct async_icount cprev, cnow; /* kernel counter temps */
|
|
struct serial_icounter_struct __user *p_cuser;
|
|
int rc = 0;
|
|
unsigned long flags;
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
if ( pCh == NULL )
|
|
return -ENODEV;
|
|
|
|
pB = pCh->pMyBord;
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg );
|
|
|
|
#ifdef IP2DEBUG_IOCTL
|
|
printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg );
|
|
#endif
|
|
|
|
switch(cmd) {
|
|
case TIOCGSERIAL:
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc );
|
|
|
|
rc = get_serial_info(pCh, argp);
|
|
if (rc)
|
|
return rc;
|
|
break;
|
|
|
|
case TIOCSSERIAL:
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc );
|
|
|
|
rc = set_serial_info(pCh, argp);
|
|
if (rc)
|
|
return rc;
|
|
break;
|
|
|
|
case TCXONC:
|
|
rc = tty_check_change(tty);
|
|
if (rc)
|
|
return rc;
|
|
switch (arg) {
|
|
case TCOOFF:
|
|
//return -ENOIOCTLCMD;
|
|
break;
|
|
case TCOON:
|
|
//return -ENOIOCTLCMD;
|
|
break;
|
|
case TCIOFF:
|
|
if (STOP_CHAR(tty) != __DISABLED_CHAR) {
|
|
i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
|
|
CMD_XMIT_NOW(STOP_CHAR(tty)));
|
|
}
|
|
break;
|
|
case TCION:
|
|
if (START_CHAR(tty) != __DISABLED_CHAR) {
|
|
i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1,
|
|
CMD_XMIT_NOW(START_CHAR(tty)));
|
|
}
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
|
|
case TCSBRK: /* SVID version: non-zero arg --> no break */
|
|
rc = tty_check_change(tty);
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc );
|
|
|
|
if (!rc) {
|
|
ip2_wait_until_sent(tty,0);
|
|
if (!arg) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250));
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
}
|
|
}
|
|
break;
|
|
|
|
case TCSBRKP: /* support for POSIX tcsendbreak() */
|
|
rc = tty_check_change(tty);
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc );
|
|
|
|
if (!rc) {
|
|
ip2_wait_until_sent(tty,0);
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
|
|
CMD_SEND_BRK(arg ? arg*100 : 250));
|
|
serviceOutgoingFifo ( pCh->pMyBord );
|
|
}
|
|
break;
|
|
|
|
case TIOCGSOFTCAR:
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc );
|
|
|
|
rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp);
|
|
if (rc)
|
|
return rc;
|
|
break;
|
|
|
|
case TIOCSSOFTCAR:
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc );
|
|
|
|
rc = get_user(arg,(unsigned long __user *) argp);
|
|
if (rc)
|
|
return rc;
|
|
tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL)
|
|
| (arg ? CLOCAL : 0));
|
|
|
|
break;
|
|
|
|
/*
|
|
* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask
|
|
* passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS
|
|
* for masking). Caller should use TIOCGICOUNT to see which one it was
|
|
*/
|
|
case TIOCMIWAIT:
|
|
write_lock_irqsave(&pB->read_fifo_spinlock, flags);
|
|
cprev = pCh->icount; /* note the counters on entry */
|
|
write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4,
|
|
CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP);
|
|
init_waitqueue_entry(&wait, current);
|
|
add_wait_queue(&pCh->delta_msr_wait, &wait);
|
|
set_current_state( TASK_INTERRUPTIBLE );
|
|
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
for(;;) {
|
|
ip2trace (CHANN, ITRC_IOCTL, 10, 0 );
|
|
|
|
schedule();
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, 11, 0 );
|
|
|
|
/* see if a signal did it */
|
|
if (signal_pending(current)) {
|
|
rc = -ERESTARTSYS;
|
|
break;
|
|
}
|
|
write_lock_irqsave(&pB->read_fifo_spinlock, flags);
|
|
cnow = pCh->icount; /* atomic copy */
|
|
write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
|
|
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
|
|
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
|
|
rc = -EIO; /* no change => rc */
|
|
break;
|
|
}
|
|
if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
|
|
((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
|
|
((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
|
|
((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
|
|
rc = 0;
|
|
break;
|
|
}
|
|
cprev = cnow;
|
|
}
|
|
set_current_state( TASK_RUNNING );
|
|
remove_wait_queue(&pCh->delta_msr_wait, &wait);
|
|
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3,
|
|
CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP);
|
|
if ( ! (pCh->flags & ASYNC_CHECK_CD)) {
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP);
|
|
}
|
|
serviceOutgoingFifo( pCh->pMyBord );
|
|
return rc;
|
|
break;
|
|
|
|
/*
|
|
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
|
|
* Return: write counters to the user passed counter struct
|
|
* NB: both 1->0 and 0->1 transitions are counted except for RI where
|
|
* only 0->1 is counted. The controller is quite capable of counting
|
|
* both, but this done to preserve compatibility with the standard
|
|
* serial driver.
|
|
*/
|
|
case TIOCGICOUNT:
|
|
ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc );
|
|
|
|
write_lock_irqsave(&pB->read_fifo_spinlock, flags);
|
|
cnow = pCh->icount;
|
|
write_unlock_irqrestore(&pB->read_fifo_spinlock, flags);
|
|
p_cuser = argp;
|
|
rc = put_user(cnow.cts, &p_cuser->cts);
|
|
rc = put_user(cnow.dsr, &p_cuser->dsr);
|
|
rc = put_user(cnow.rng, &p_cuser->rng);
|
|
rc = put_user(cnow.dcd, &p_cuser->dcd);
|
|
rc = put_user(cnow.rx, &p_cuser->rx);
|
|
rc = put_user(cnow.tx, &p_cuser->tx);
|
|
rc = put_user(cnow.frame, &p_cuser->frame);
|
|
rc = put_user(cnow.overrun, &p_cuser->overrun);
|
|
rc = put_user(cnow.parity, &p_cuser->parity);
|
|
rc = put_user(cnow.brk, &p_cuser->brk);
|
|
rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun);
|
|
break;
|
|
|
|
/*
|
|
* The rest are not supported by this driver. By returning -ENOIOCTLCMD they
|
|
* will be passed to the line discipline for it to handle.
|
|
*/
|
|
case TIOCSERCONFIG:
|
|
case TIOCSERGWILD:
|
|
case TIOCSERGETLSR:
|
|
case TIOCSERSWILD:
|
|
case TIOCSERGSTRUCT:
|
|
case TIOCSERGETMULTI:
|
|
case TIOCSERSETMULTI:
|
|
|
|
default:
|
|
ip2trace (CHANN, ITRC_IOCTL, 12, 0 );
|
|
|
|
rc = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
|
|
ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 );
|
|
|
|
return rc;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: GetSerialInfo() */
|
|
/* Parameters: Pointer to channel structure */
|
|
/* Pointer to old termios structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* This is to support the setserial command, and requires processing of the */
|
|
/* standard Linux serial structure. */
|
|
/******************************************************************************/
|
|
static int
|
|
get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo )
|
|
{
|
|
struct serial_struct tmp;
|
|
|
|
memset ( &tmp, 0, sizeof(tmp) );
|
|
tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16];
|
|
if (BID_HAS_654(tmp.type)) {
|
|
tmp.type = PORT_16650;
|
|
} else {
|
|
tmp.type = PORT_CIRRUS;
|
|
}
|
|
tmp.line = pCh->port_index;
|
|
tmp.port = pCh->pMyBord->i2eBase;
|
|
tmp.irq = ip2config.irq[pCh->port_index/64];
|
|
tmp.flags = pCh->flags;
|
|
tmp.baud_base = pCh->BaudBase;
|
|
tmp.close_delay = pCh->ClosingDelay;
|
|
tmp.closing_wait = pCh->ClosingWaitTime;
|
|
tmp.custom_divisor = pCh->BaudDivisor;
|
|
return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: SetSerialInfo() */
|
|
/* Parameters: Pointer to channel structure */
|
|
/* Pointer to old termios structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* This function provides support for setserial, which uses the TIOCSSERIAL */
|
|
/* ioctl. Not all setserial parameters are relevant. If the user attempts to */
|
|
/* change the IRQ, address or type of the port the ioctl fails. */
|
|
/******************************************************************************/
|
|
static int
|
|
set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info )
|
|
{
|
|
struct serial_struct ns;
|
|
int old_flags, old_baud_divisor;
|
|
|
|
if (copy_from_user(&ns, new_info, sizeof (ns)))
|
|
return -EFAULT;
|
|
|
|
/*
|
|
* We don't allow setserial to change IRQ, board address, type or baud
|
|
* base. Also line nunber as such is meaningless but we use it for our
|
|
* array index so it is fixed also.
|
|
*/
|
|
if ( (ns.irq != ip2config.irq[pCh->port_index])
|
|
|| ((int) ns.port != ((int) (pCh->pMyBord->i2eBase)))
|
|
|| (ns.baud_base != pCh->BaudBase)
|
|
|| (ns.line != pCh->port_index) ) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
old_flags = pCh->flags;
|
|
old_baud_divisor = pCh->BaudDivisor;
|
|
|
|
if ( !capable(CAP_SYS_ADMIN) ) {
|
|
if ( ( ns.close_delay != pCh->ClosingDelay ) ||
|
|
( (ns.flags & ~ASYNC_USR_MASK) !=
|
|
(pCh->flags & ~ASYNC_USR_MASK) ) ) {
|
|
return -EPERM;
|
|
}
|
|
|
|
pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) |
|
|
(ns.flags & ASYNC_USR_MASK);
|
|
pCh->BaudDivisor = ns.custom_divisor;
|
|
} else {
|
|
pCh->flags = (pCh->flags & ~ASYNC_FLAGS) |
|
|
(ns.flags & ASYNC_FLAGS);
|
|
pCh->BaudDivisor = ns.custom_divisor;
|
|
pCh->ClosingDelay = ns.close_delay * HZ/100;
|
|
pCh->ClosingWaitTime = ns.closing_wait * HZ/100;
|
|
}
|
|
|
|
if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) )
|
|
|| (old_baud_divisor != pCh->BaudDivisor) ) {
|
|
// Invalidate speed and reset parameters
|
|
set_params( pCh, NULL );
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_set_termios() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Pointer to old termios structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_set_termios( PTTY tty, struct ktermios *old_termios )
|
|
{
|
|
i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data;
|
|
|
|
#ifdef IP2DEBUG_IOCTL
|
|
printk (KERN_DEBUG "IP2: set termios %p\n", old_termios );
|
|
#endif
|
|
|
|
set_params( pCh, old_termios );
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_set_line_discipline() */
|
|
/* Parameters: Pointer to tty structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: Does nothing */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static void
|
|
ip2_set_line_discipline ( PTTY tty )
|
|
{
|
|
#ifdef IP2DEBUG_IOCTL
|
|
printk (KERN_DEBUG "IP2: set line discipline\n" );
|
|
#endif
|
|
|
|
ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 );
|
|
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: SetLine Characteristics() */
|
|
/* Parameters: Pointer to channel structure */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* This routine is called to update the channel structure with the new line */
|
|
/* characteristics, and send the appropriate commands to the board when they */
|
|
/* change. */
|
|
/******************************************************************************/
|
|
static void
|
|
set_params( i2ChanStrPtr pCh, struct ktermios *o_tios )
|
|
{
|
|
tcflag_t cflag, iflag, lflag;
|
|
char stop_char, start_char;
|
|
struct ktermios dummy;
|
|
|
|
lflag = pCh->pTTY->termios->c_lflag;
|
|
cflag = pCh->pTTY->termios->c_cflag;
|
|
iflag = pCh->pTTY->termios->c_iflag;
|
|
|
|
if (o_tios == NULL) {
|
|
dummy.c_lflag = ~lflag;
|
|
dummy.c_cflag = ~cflag;
|
|
dummy.c_iflag = ~iflag;
|
|
o_tios = &dummy;
|
|
}
|
|
|
|
{
|
|
switch ( cflag & CBAUD ) {
|
|
case B0:
|
|
i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN);
|
|
pCh->dataSetOut &= ~(I2_DTR | I2_RTS);
|
|
i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25));
|
|
pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag);
|
|
goto service_it;
|
|
break;
|
|
case B38400:
|
|
/*
|
|
* This is the speed that is overloaded with all the other high
|
|
* speeds, depending upon the flag settings.
|
|
*/
|
|
if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) {
|
|
pCh->speed = CBR_57600;
|
|
} else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) {
|
|
pCh->speed = CBR_115200;
|
|
} else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) {
|
|
pCh->speed = CBR_C1;
|
|
} else {
|
|
pCh->speed = CBR_38400;
|
|
}
|
|
break;
|
|
case B50: pCh->speed = CBR_50; break;
|
|
case B75: pCh->speed = CBR_75; break;
|
|
case B110: pCh->speed = CBR_110; break;
|
|
case B134: pCh->speed = CBR_134; break;
|
|
case B150: pCh->speed = CBR_150; break;
|
|
case B200: pCh->speed = CBR_200; break;
|
|
case B300: pCh->speed = CBR_300; break;
|
|
case B600: pCh->speed = CBR_600; break;
|
|
case B1200: pCh->speed = CBR_1200; break;
|
|
case B1800: pCh->speed = CBR_1800; break;
|
|
case B2400: pCh->speed = CBR_2400; break;
|
|
case B4800: pCh->speed = CBR_4800; break;
|
|
case B9600: pCh->speed = CBR_9600; break;
|
|
case B19200: pCh->speed = CBR_19200; break;
|
|
case B57600: pCh->speed = CBR_57600; break;
|
|
case B115200: pCh->speed = CBR_115200; break;
|
|
case B153600: pCh->speed = CBR_153600; break;
|
|
case B230400: pCh->speed = CBR_230400; break;
|
|
case B307200: pCh->speed = CBR_307200; break;
|
|
case B460800: pCh->speed = CBR_460800; break;
|
|
case B921600: pCh->speed = CBR_921600; break;
|
|
default: pCh->speed = CBR_9600; break;
|
|
}
|
|
if ( pCh->speed == CBR_C1 ) {
|
|
// Process the custom speed parameters.
|
|
int bps = pCh->BaudBase / pCh->BaudDivisor;
|
|
if ( bps == 921600 ) {
|
|
pCh->speed = CBR_921600;
|
|
} else {
|
|
bps = bps/10;
|
|
i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) );
|
|
}
|
|
}
|
|
i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed));
|
|
|
|
i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP);
|
|
pCh->dataSetOut |= (I2_DTR | I2_RTS);
|
|
}
|
|
if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag))
|
|
{
|
|
i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
|
|
CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1));
|
|
}
|
|
if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag))
|
|
{
|
|
i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1,
|
|
CMD_SETPAR(
|
|
(cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP)
|
|
)
|
|
);
|
|
}
|
|
/* byte size and parity */
|
|
if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag))
|
|
{
|
|
int datasize;
|
|
switch ( cflag & CSIZE ) {
|
|
case CS5: datasize = CSZ_5; break;
|
|
case CS6: datasize = CSZ_6; break;
|
|
case CS7: datasize = CSZ_7; break;
|
|
case CS8: datasize = CSZ_8; break;
|
|
default: datasize = CSZ_5; break; /* as per serial.c */
|
|
}
|
|
i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) );
|
|
}
|
|
/* Process CTS flow control flag setting */
|
|
if ( (cflag & CRTSCTS) ) {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100,
|
|
2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB);
|
|
} else {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100,
|
|
2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB);
|
|
}
|
|
//
|
|
// Process XON/XOFF flow control flags settings
|
|
//
|
|
stop_char = STOP_CHAR(pCh->pTTY);
|
|
start_char = START_CHAR(pCh->pTTY);
|
|
|
|
//////////// can't be \000
|
|
if (stop_char == __DISABLED_CHAR )
|
|
{
|
|
stop_char = ~__DISABLED_CHAR;
|
|
}
|
|
if (start_char == __DISABLED_CHAR )
|
|
{
|
|
start_char = ~__DISABLED_CHAR;
|
|
}
|
|
/////////////////////////////////
|
|
|
|
if ( o_tios->c_cc[VSTART] != start_char )
|
|
{
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char));
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char));
|
|
}
|
|
if ( o_tios->c_cc[VSTOP] != stop_char )
|
|
{
|
|
i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char));
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char));
|
|
}
|
|
if (stop_char == __DISABLED_CHAR )
|
|
{
|
|
stop_char = ~__DISABLED_CHAR; //TEST123
|
|
goto no_xoff;
|
|
}
|
|
if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF)))
|
|
{
|
|
if ( iflag & IXOFF ) { // Enable XOFF output flow control
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON));
|
|
} else { // Disable XOFF output flow control
|
|
no_xoff:
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE));
|
|
}
|
|
}
|
|
if (start_char == __DISABLED_CHAR )
|
|
{
|
|
goto no_xon;
|
|
}
|
|
if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY)))
|
|
{
|
|
if ( iflag & IXON ) {
|
|
if ( iflag & IXANY ) { // Enable XON/XANY output flow control
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY));
|
|
} else { // Enable XON output flow control
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON));
|
|
}
|
|
} else { // Disable XON output flow control
|
|
no_xon:
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE));
|
|
}
|
|
}
|
|
if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) )
|
|
{
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
|
|
CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0)));
|
|
}
|
|
if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) )
|
|
{
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1,
|
|
CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB));
|
|
}
|
|
|
|
if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR))
|
|
^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) )
|
|
{
|
|
char brkrpt = 0;
|
|
char parrpt = 0;
|
|
|
|
if ( iflag & IGNBRK ) { /* Ignore breaks altogether */
|
|
/* Ignore breaks altogether */
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP);
|
|
} else {
|
|
if ( iflag & BRKINT ) {
|
|
if ( iflag & PARMRK ) {
|
|
brkrpt = 0x0a; // exception an inline triple
|
|
} else {
|
|
brkrpt = 0x1a; // exception and NULL
|
|
}
|
|
brkrpt |= 0x04; // flush input
|
|
} else {
|
|
if ( iflag & PARMRK ) {
|
|
brkrpt = 0x0b; //POSIX triple \0377 \0 \0
|
|
} else {
|
|
brkrpt = 0x01; // Null only
|
|
}
|
|
}
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt));
|
|
}
|
|
|
|
if (iflag & IGNPAR) {
|
|
parrpt = 0x20;
|
|
/* would be 2 for not cirrus bug */
|
|
/* would be 0x20 cept for cirrus bug */
|
|
} else {
|
|
if ( iflag & PARMRK ) {
|
|
/*
|
|
* Replace error characters with 3-byte sequence (\0377,\0,char)
|
|
*/
|
|
parrpt = 0x04 ;
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0));
|
|
} else {
|
|
parrpt = 0x03;
|
|
}
|
|
}
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt));
|
|
}
|
|
if (cflag & CLOCAL) {
|
|
// Status reporting fails for DCD if this is off
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP);
|
|
pCh->flags &= ~ASYNC_CHECK_CD;
|
|
} else {
|
|
i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP);
|
|
pCh->flags |= ASYNC_CHECK_CD;
|
|
}
|
|
|
|
service_it:
|
|
i2DrainOutput( pCh, 100 );
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* IPL Device Section */
|
|
/******************************************************************************/
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_ipl_read() */
|
|
/* Parameters: Pointer to device inode */
|
|
/* Pointer to file structure */
|
|
/* Pointer to data */
|
|
/* Number of bytes to read */
|
|
/* Returns: Success or failure */
|
|
/* */
|
|
/* Description: Ugly */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
|
|
static
|
|
ssize_t
|
|
ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off )
|
|
{
|
|
unsigned int minor = iminor(pFile->f_path.dentry->d_inode);
|
|
int rc = 0;
|
|
|
|
#ifdef IP2DEBUG_IPL
|
|
printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count );
|
|
#endif
|
|
|
|
switch( minor ) {
|
|
case 0: // IPL device
|
|
rc = -EINVAL;
|
|
break;
|
|
case 1: // Status dump
|
|
rc = -EINVAL;
|
|
break;
|
|
case 2: // Ping device
|
|
rc = -EINVAL;
|
|
break;
|
|
case 3: // Trace device
|
|
rc = DumpTraceBuffer ( pData, count );
|
|
break;
|
|
case 4: // Trace device
|
|
rc = DumpFifoBuffer ( pData, count );
|
|
break;
|
|
default:
|
|
rc = -ENODEV;
|
|
break;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
DumpFifoBuffer ( char __user *pData, int count )
|
|
{
|
|
#ifdef DEBUG_FIFO
|
|
int rc;
|
|
rc = copy_to_user(pData, DBGBuf, count);
|
|
|
|
printk(KERN_DEBUG "Last index %d\n", I );
|
|
|
|
return count;
|
|
#endif /* DEBUG_FIFO */
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
DumpTraceBuffer ( char __user *pData, int count )
|
|
{
|
|
#ifdef IP2DEBUG_TRACE
|
|
int rc;
|
|
int dumpcount;
|
|
int chunk;
|
|
int *pIndex = (int __user *)pData;
|
|
|
|
if ( count < (sizeof(int) * 6) ) {
|
|
return -EIO;
|
|
}
|
|
rc = put_user(tracewrap, pIndex );
|
|
rc = put_user(TRACEMAX, ++pIndex );
|
|
rc = put_user(tracestrip, ++pIndex );
|
|
rc = put_user(tracestuff, ++pIndex );
|
|
pData += sizeof(int) * 6;
|
|
count -= sizeof(int) * 6;
|
|
|
|
dumpcount = tracestuff - tracestrip;
|
|
if ( dumpcount < 0 ) {
|
|
dumpcount += TRACEMAX;
|
|
}
|
|
if ( dumpcount > count ) {
|
|
dumpcount = count;
|
|
}
|
|
chunk = TRACEMAX - tracestrip;
|
|
if ( dumpcount > chunk ) {
|
|
rc = copy_to_user(pData, &tracebuf[tracestrip],
|
|
chunk * sizeof(tracebuf[0]) );
|
|
pData += chunk * sizeof(tracebuf[0]);
|
|
tracestrip = 0;
|
|
chunk = dumpcount - chunk;
|
|
} else {
|
|
chunk = dumpcount;
|
|
}
|
|
rc = copy_to_user(pData, &tracebuf[tracestrip],
|
|
chunk * sizeof(tracebuf[0]) );
|
|
tracestrip += chunk;
|
|
tracewrap = 0;
|
|
|
|
rc = put_user(tracestrip, ++pIndex );
|
|
rc = put_user(tracestuff, ++pIndex );
|
|
|
|
return dumpcount;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_ipl_write() */
|
|
/* Parameters: */
|
|
/* Pointer to file structure */
|
|
/* Pointer to data */
|
|
/* Number of bytes to write */
|
|
/* Returns: Success or failure */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static ssize_t
|
|
ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off)
|
|
{
|
|
#ifdef IP2DEBUG_IPL
|
|
printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count );
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_ipl_ioctl() */
|
|
/* Parameters: Pointer to device inode */
|
|
/* Pointer to file structure */
|
|
/* Command */
|
|
/* Argument */
|
|
/* Returns: Success or failure */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static long
|
|
ip2_ipl_ioctl (struct file *pFile, UINT cmd, ULONG arg )
|
|
{
|
|
unsigned int iplminor = iminor(pFile->f_path.dentry->d_inode);
|
|
int rc = 0;
|
|
void __user *argp = (void __user *)arg;
|
|
ULONG __user *pIndex = argp;
|
|
i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4];
|
|
i2ChanStrPtr pCh;
|
|
|
|
#ifdef IP2DEBUG_IPL
|
|
printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg );
|
|
#endif
|
|
|
|
lock_kernel();
|
|
|
|
switch ( iplminor ) {
|
|
case 0: // IPL device
|
|
rc = -EINVAL;
|
|
break;
|
|
case 1: // Status dump
|
|
case 5:
|
|
case 9:
|
|
case 13:
|
|
switch ( cmd ) {
|
|
case 64: /* Driver - ip2stat */
|
|
rc = put_user(ip2_tty_driver->refcount, pIndex++ );
|
|
rc = put_user(irq_counter, pIndex++ );
|
|
rc = put_user(bh_counter, pIndex++ );
|
|
break;
|
|
|
|
case 65: /* Board - ip2stat */
|
|
if ( pB ) {
|
|
rc = copy_to_user(argp, pB, sizeof(i2eBordStr));
|
|
rc = put_user(inb(pB->i2eStatus),
|
|
(ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) );
|
|
} else {
|
|
rc = -ENODEV;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if (cmd < IP2_MAX_PORTS) {
|
|
pCh = DevTable[cmd];
|
|
if ( pCh )
|
|
{
|
|
rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
|
|
} else {
|
|
rc = -ENODEV;
|
|
}
|
|
} else {
|
|
rc = -EINVAL;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 2: // Ping device
|
|
rc = -EINVAL;
|
|
break;
|
|
case 3: // Trace device
|
|
/*
|
|
* akpm: This used to write a whole bunch of function addresses
|
|
* to userspace, which generated lots of put_user() warnings.
|
|
* I killed it all. Just return "success" and don't do
|
|
* anything.
|
|
*/
|
|
if (cmd == 1)
|
|
rc = 0;
|
|
else
|
|
rc = -EINVAL;
|
|
break;
|
|
|
|
default:
|
|
rc = -ENODEV;
|
|
break;
|
|
}
|
|
unlock_kernel();
|
|
return rc;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2_ipl_open() */
|
|
/* Parameters: Pointer to device inode */
|
|
/* Pointer to file structure */
|
|
/* Returns: Success or failure */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
static int
|
|
ip2_ipl_open( struct inode *pInode, struct file *pFile )
|
|
{
|
|
|
|
#ifdef IP2DEBUG_IPL
|
|
printk (KERN_DEBUG "IP2IPL: open\n" );
|
|
#endif
|
|
cycle_kernel_lock();
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
proc_ip2mem_show(struct seq_file *m, void *v)
|
|
{
|
|
i2eBordStrPtr pB;
|
|
i2ChanStrPtr pCh;
|
|
PTTY tty;
|
|
int i;
|
|
|
|
#define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n"
|
|
#define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n"
|
|
#define FMTLIN3 " 0x%04x 0x%04x rc flow\n"
|
|
|
|
seq_printf(m,"\n");
|
|
|
|
for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
|
|
pB = i2BoardPtrTable[i];
|
|
if ( pB ) {
|
|
seq_printf(m,"board %d:\n",i);
|
|
seq_printf(m,"\tFifo rem: %d mty: %x outM %x\n",
|
|
pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting);
|
|
}
|
|
}
|
|
|
|
seq_printf(m,"#: tty flags, port flags, cflags, iflags\n");
|
|
for (i=0; i < IP2_MAX_PORTS; i++) {
|
|
pCh = DevTable[i];
|
|
if (pCh) {
|
|
tty = pCh->pTTY;
|
|
if (tty && tty->count) {
|
|
seq_printf(m,FMTLINE,i,(int)tty->flags,pCh->flags,
|
|
tty->termios->c_cflag,tty->termios->c_iflag);
|
|
|
|
seq_printf(m,FMTLIN2,
|
|
pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds);
|
|
seq_printf(m,FMTLIN3,pCh->infl.asof,pCh->infl.room);
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int proc_ip2mem_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, proc_ip2mem_show, NULL);
|
|
}
|
|
|
|
static const struct file_operations ip2mem_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = proc_ip2mem_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
/*
|
|
* This is the handler for /proc/tty/driver/ip2
|
|
*
|
|
* This stretch of code has been largely plagerized from at least three
|
|
* different sources including ip2mkdev.c and a couple of other drivers.
|
|
* The bugs are all mine. :-) =mhw=
|
|
*/
|
|
static int ip2_read_proc(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
int i, j, box;
|
|
int len = 0;
|
|
int boxes = 0;
|
|
int ports = 0;
|
|
int tports = 0;
|
|
off_t begin = 0;
|
|
i2eBordStrPtr pB;
|
|
|
|
len += sprintf(page, "ip2info: 1.0 driver: %s\n", pcVersion );
|
|
len += sprintf(page+len, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n",
|
|
IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR,
|
|
IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX);
|
|
|
|
for( i = 0; i < IP2_MAX_BOARDS; ++i ) {
|
|
/* This need to be reset for a board by board count... */
|
|
boxes = 0;
|
|
pB = i2BoardPtrTable[i];
|
|
if( pB ) {
|
|
switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED )
|
|
{
|
|
case POR_ID_FIIEX:
|
|
len += sprintf( page+len, "Board %d: EX ports=", i );
|
|
for( box = 0; box < ABS_MAX_BOXES; ++box )
|
|
{
|
|
ports = 0;
|
|
|
|
if( pB->i2eChannelMap[box] != 0 ) ++boxes;
|
|
for( j = 0; j < ABS_BIGGEST_BOX; ++j )
|
|
{
|
|
if( pB->i2eChannelMap[box] & 1<< j ) {
|
|
++ports;
|
|
}
|
|
}
|
|
len += sprintf( page+len, "%d,", ports );
|
|
tports += ports;
|
|
}
|
|
|
|
--len; /* Backup over that last comma */
|
|
|
|
len += sprintf( page+len, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8 );
|
|
break;
|
|
|
|
case POR_ID_II_4:
|
|
len += sprintf(page+len, "Board %d: ISA-4 ports=4 boxes=1", i );
|
|
tports = ports = 4;
|
|
break;
|
|
|
|
case POR_ID_II_8:
|
|
len += sprintf(page+len, "Board %d: ISA-8-std ports=8 boxes=1", i );
|
|
tports = ports = 8;
|
|
break;
|
|
|
|
case POR_ID_II_8R:
|
|
len += sprintf(page+len, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i );
|
|
tports = ports = 8;
|
|
break;
|
|
|
|
default:
|
|
len += sprintf(page+len, "Board %d: unknown", i );
|
|
/* Don't try and probe for minor numbers */
|
|
tports = ports = 0;
|
|
}
|
|
|
|
} else {
|
|
/* Don't try and probe for minor numbers */
|
|
len += sprintf(page+len, "Board %d: vacant", i );
|
|
tports = ports = 0;
|
|
}
|
|
|
|
if( tports ) {
|
|
len += sprintf(page+len, " minors=" );
|
|
|
|
for ( box = 0; box < ABS_MAX_BOXES; ++box )
|
|
{
|
|
for ( j = 0; j < ABS_BIGGEST_BOX; ++j )
|
|
{
|
|
if ( pB->i2eChannelMap[box] & (1 << j) )
|
|
{
|
|
len += sprintf (page+len,"%d,",
|
|
j + ABS_BIGGEST_BOX *
|
|
(box+i*ABS_MAX_BOXES));
|
|
}
|
|
}
|
|
}
|
|
|
|
page[ len - 1 ] = '\n'; /* Overwrite that last comma */
|
|
} else {
|
|
len += sprintf (page+len,"\n" );
|
|
}
|
|
|
|
if (len+begin > off+count)
|
|
break;
|
|
if (len+begin < off) {
|
|
begin += len;
|
|
len = 0;
|
|
}
|
|
}
|
|
|
|
if (i >= IP2_MAX_BOARDS)
|
|
*eof = 1;
|
|
if (off >= len+begin)
|
|
return 0;
|
|
|
|
*start = page + (off-begin);
|
|
return ((count < begin+len-off) ? count : begin+len-off);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/* Function: ip2trace() */
|
|
/* Parameters: Value to add to trace buffer */
|
|
/* Returns: Nothing */
|
|
/* */
|
|
/* Description: */
|
|
/* */
|
|
/* */
|
|
/******************************************************************************/
|
|
#ifdef IP2DEBUG_TRACE
|
|
void
|
|
ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...)
|
|
{
|
|
long flags;
|
|
unsigned long *pCode = &codes;
|
|
union ip2breadcrumb bc;
|
|
i2ChanStrPtr pCh;
|
|
|
|
|
|
tracebuf[tracestuff++] = jiffies;
|
|
if ( tracestuff == TRACEMAX ) {
|
|
tracestuff = 0;
|
|
}
|
|
if ( tracestuff == tracestrip ) {
|
|
if ( ++tracestrip == TRACEMAX ) {
|
|
tracestrip = 0;
|
|
}
|
|
++tracewrap;
|
|
}
|
|
|
|
bc.hdr.port = 0xff & pn;
|
|
bc.hdr.cat = cat;
|
|
bc.hdr.codes = (unsigned char)( codes & 0xff );
|
|
bc.hdr.label = label;
|
|
tracebuf[tracestuff++] = bc.value;
|
|
|
|
for (;;) {
|
|
if ( tracestuff == TRACEMAX ) {
|
|
tracestuff = 0;
|
|
}
|
|
if ( tracestuff == tracestrip ) {
|
|
if ( ++tracestrip == TRACEMAX ) {
|
|
tracestrip = 0;
|
|
}
|
|
++tracewrap;
|
|
}
|
|
|
|
if ( !codes-- )
|
|
break;
|
|
|
|
tracebuf[tracestuff++] = *++pCode;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static struct pci_device_id ip2main_pci_tbl[] __devinitdata = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl);
|