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marcus.erl |
/*
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Copyright (C) 1996 Digi International.
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For technical support please email digiLinux@dgii.com or
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call Digi tech support at (612) 912-3456
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** This driver is no longer supported by Digi **
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Much of this design and code came from epca.c which was
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copyright (C) 1994, 1995 Troy De Jongh, and subsquently
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modified by David Nugent, Christoph Lameter, Mike McLagan.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* See README.epca for change history --DAT*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/serial.h>
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#include <linux/delay.h>
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#include <linux/ctype.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/slab.h>
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <linux/spinlock.h>
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#include <linux/pci.h>
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#include "digiPCI.h"
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#include "digi1.h"
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#include "digiFep1.h"
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#include "epca.h"
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#include "epcaconfig.h"
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#define VERSION "1.3.0.1-LK2.6"
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/* This major needs to be submitted to Linux to join the majors list */
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#define DIGIINFOMAJOR 35 /* For Digi specific ioctl */
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#define MAXCARDS 7
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#define epcaassert(x, msg) if (!(x)) epca_error(__LINE__, msg)
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#define PFX "epca: "
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static int nbdevs, num_cards, liloconfig;
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static int digi_poller_inhibited = 1 ;
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static int setup_error_code;
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static int invalid_lilo_config;
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/*
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* The ISA boards do window flipping into the same spaces so its only sane with
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* a single lock. It's still pretty efficient.
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*/
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static DEFINE_SPINLOCK(epca_lock);
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/* MAXBOARDS is typically 12, but ISA and EISA cards are restricted to 7 below. */
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static struct board_info boards[MAXBOARDS];
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static struct tty_driver *pc_driver;
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static struct tty_driver *pc_info;
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/* ------------------ Begin Digi specific structures -------------------- */
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/*
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* digi_channels represents an array of structures that keep track of each
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* channel of the Digi product. Information such as transmit and receive
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* pointers, termio data, and signal definitions (DTR, CTS, etc ...) are stored
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* here. This structure is NOT used to overlay the cards physical channel
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* structure.
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*/
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static struct channel digi_channels[MAX_ALLOC];
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/*
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* card_ptr is an array used to hold the address of the first channel structure
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* of each card. This array will hold the addresses of various channels located
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* in digi_channels.
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*/
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static struct channel *card_ptr[MAXCARDS];
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static struct timer_list epca_timer;
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/*
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* Begin generic memory functions. These functions will be alias (point at)
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* more specific functions dependent on the board being configured.
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*/
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static void memwinon(struct board_info *b, unsigned int win);
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static void memwinoff(struct board_info *b, unsigned int win);
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static void globalwinon(struct channel *ch);
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static void rxwinon(struct channel *ch);
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static void txwinon(struct channel *ch);
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static void memoff(struct channel *ch);
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static void assertgwinon(struct channel *ch);
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static void assertmemoff(struct channel *ch);
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/* ---- Begin more 'specific' memory functions for cx_like products --- */
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static void pcxem_memwinon(struct board_info *b, unsigned int win);
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static void pcxem_memwinoff(struct board_info *b, unsigned int win);
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static void pcxem_globalwinon(struct channel *ch);
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static void pcxem_rxwinon(struct channel *ch);
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static void pcxem_txwinon(struct channel *ch);
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static void pcxem_memoff(struct channel *ch);
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/* ------ Begin more 'specific' memory functions for the pcxe ------- */
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static void pcxe_memwinon(struct board_info *b, unsigned int win);
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static void pcxe_memwinoff(struct board_info *b, unsigned int win);
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static void pcxe_globalwinon(struct channel *ch);
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static void pcxe_rxwinon(struct channel *ch);
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static void pcxe_txwinon(struct channel *ch);
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static void pcxe_memoff(struct channel *ch);
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/* ---- Begin more 'specific' memory functions for the pc64xe and pcxi ---- */
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/* Note : pc64xe and pcxi share the same windowing routines */
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static void pcxi_memwinon(struct board_info *b, unsigned int win);
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static void pcxi_memwinoff(struct board_info *b, unsigned int win);
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static void pcxi_globalwinon(struct channel *ch);
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static void pcxi_rxwinon(struct channel *ch);
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static void pcxi_txwinon(struct channel *ch);
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static void pcxi_memoff(struct channel *ch);
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/* - Begin 'specific' do nothing memory functions needed for some cards - */
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static void dummy_memwinon(struct board_info *b, unsigned int win);
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static void dummy_memwinoff(struct board_info *b, unsigned int win);
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static void dummy_globalwinon(struct channel *ch);
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static void dummy_rxwinon(struct channel *ch);
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static void dummy_txwinon(struct channel *ch);
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static void dummy_memoff(struct channel *ch);
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static void dummy_assertgwinon(struct channel *ch);
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static void dummy_assertmemoff(struct channel *ch);
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static struct channel *verifyChannel(struct tty_struct *);
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static void pc_sched_event(struct channel *, int);
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static void epca_error(int, char *);
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static void pc_close(struct tty_struct *, struct file *);
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static void shutdown(struct channel *);
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static void pc_hangup(struct tty_struct *);
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static void pc_put_char(struct tty_struct *, unsigned char);
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static int pc_write_room(struct tty_struct *);
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static int pc_chars_in_buffer(struct tty_struct *);
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static void pc_flush_buffer(struct tty_struct *);
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static void pc_flush_chars(struct tty_struct *);
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static int block_til_ready(struct tty_struct *, struct file *,
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struct channel *);
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static int pc_open(struct tty_struct *, struct file *);
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static void post_fep_init(unsigned int crd);
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static void epcapoll(unsigned long);
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static void doevent(int);
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static void fepcmd(struct channel *, int, int, int, int, int);
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static unsigned termios2digi_h(struct channel *ch, unsigned);
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static unsigned termios2digi_i(struct channel *ch, unsigned);
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static unsigned termios2digi_c(struct channel *ch, unsigned);
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static void epcaparam(struct tty_struct *, struct channel *);
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static void receive_data(struct channel *);
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static int pc_ioctl(struct tty_struct *, struct file *,
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unsigned int, unsigned long);
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static int info_ioctl(struct tty_struct *, struct file *,
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unsigned int, unsigned long);
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static void pc_set_termios(struct tty_struct *, struct ktermios *);
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static void do_softint(struct work_struct *work);
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static void pc_stop(struct tty_struct *);
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static void pc_start(struct tty_struct *);
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static void pc_throttle(struct tty_struct * tty);
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static void pc_unthrottle(struct tty_struct *tty);
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static void digi_send_break(struct channel *ch, int msec);
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static void setup_empty_event(struct tty_struct *tty, struct channel *ch);
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void epca_setup(char *, int *);
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static int pc_write(struct tty_struct *, const unsigned char *, int);
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static int pc_init(void);
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static int init_PCI(void);
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/*
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* Table of functions for each board to handle memory. Mantaining parallelism
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* is a *very* good idea here. The idea is for the runtime code to blindly call
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* these functions, not knowing/caring about the underlying hardware. This
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* stuff should contain no conditionals; if more functionality is needed a
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* different entry should be established. These calls are the interface calls
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* and are the only functions that should be accessed. Anyone caught making
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* direct calls deserves what they get.
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*/
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static void memwinon(struct board_info *b, unsigned int win)
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{
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b->memwinon(b, win);
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}
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static void memwinoff(struct board_info *b, unsigned int win)
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{
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b->memwinoff(b, win);
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}
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static void globalwinon(struct channel *ch)
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{
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ch->board->globalwinon(ch);
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}
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static void rxwinon(struct channel *ch)
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{
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ch->board->rxwinon(ch);
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}
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static void txwinon(struct channel *ch)
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{
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ch->board->txwinon(ch);
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}
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static void memoff(struct channel *ch)
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{
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ch->board->memoff(ch);
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}
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static void assertgwinon(struct channel *ch)
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{
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ch->board->assertgwinon(ch);
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}
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static void assertmemoff(struct channel *ch)
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{
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ch->board->assertmemoff(ch);
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}
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/* PCXEM windowing is the same as that used in the PCXR and CX series cards. */
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static void pcxem_memwinon(struct board_info *b, unsigned int win)
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{
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outb_p(FEPWIN|win, b->port + 1);
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}
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static void pcxem_memwinoff(struct board_info *b, unsigned int win)
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{
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outb_p(0, b->port + 1);
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}
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static void pcxem_globalwinon(struct channel *ch)
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{
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outb_p( FEPWIN, (int)ch->board->port + 1);
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}
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static void pcxem_rxwinon(struct channel *ch)
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{
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outb_p(ch->rxwin, (int)ch->board->port + 1);
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}
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static void pcxem_txwinon(struct channel *ch)
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{
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outb_p(ch->txwin, (int)ch->board->port + 1);
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}
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static void pcxem_memoff(struct channel *ch)
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{
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outb_p(0, (int)ch->board->port + 1);
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}
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/* ----------------- Begin pcxe memory window stuff ------------------ */
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static void pcxe_memwinon(struct board_info *b, unsigned int win)
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{
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outb_p(FEPWIN | win, b->port + 1);
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}
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279 |
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static void pcxe_memwinoff(struct board_info *b, unsigned int win)
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{
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outb_p(inb(b->port) & ~FEPMEM, b->port + 1);
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outb_p(0, b->port + 1);
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}
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static void pcxe_globalwinon(struct channel *ch)
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{
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outb_p(FEPWIN, (int)ch->board->port + 1);
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}
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static void pcxe_rxwinon(struct channel *ch)
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{
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outb_p(ch->rxwin, (int)ch->board->port + 1);
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}
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static void pcxe_txwinon(struct channel *ch)
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{
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outb_p(ch->txwin, (int)ch->board->port + 1);
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}
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300 |
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static void pcxe_memoff(struct channel *ch)
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{
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outb_p(0, (int)ch->board->port);
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outb_p(0, (int)ch->board->port + 1);
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}
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/* ------------- Begin pc64xe and pcxi memory window stuff -------------- */
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static void pcxi_memwinon(struct board_info *b, unsigned int win)
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{
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outb_p(inb(b->port) | FEPMEM, b->port);
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}
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313 |
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static void pcxi_memwinoff(struct board_info *b, unsigned int win)
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{
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outb_p(inb(b->port) & ~FEPMEM, b->port);
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}
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static void pcxi_globalwinon(struct channel *ch)
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{
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outb_p(FEPMEM, ch->board->port);
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}
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static void pcxi_rxwinon(struct channel *ch)
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{
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outb_p(FEPMEM, ch->board->port);
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}
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328 |
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static void pcxi_txwinon(struct channel *ch)
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{
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outb_p(FEPMEM, ch->board->port);
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}
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332 |
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static void pcxi_memoff(struct channel *ch)
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{
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outb_p(0, ch->board->port);
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}
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337 |
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static void pcxi_assertgwinon(struct channel *ch)
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{
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340 |
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epcaassert(inb(ch->board->port) & FEPMEM, "Global memory off");
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}
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342 |
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static void pcxi_assertmemoff(struct channel *ch)
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344 |
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{
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345 |
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epcaassert(!(inb(ch->board->port) & FEPMEM), "Memory on");
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346 |
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}
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347 |
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|
348 |
|
|
/*
|
349 |
|
|
* Not all of the cards need specific memory windowing routines. Some cards
|
350 |
|
|
* (Such as PCI) needs no windowing routines at all. We provide these do
|
351 |
|
|
* nothing routines so that the same code base can be used. The driver will
|
352 |
|
|
* ALWAYS call a windowing routine if it thinks it needs to; regardless of the
|
353 |
|
|
* card. However, dependent on the card the routine may or may not do anything.
|
354 |
|
|
*/
|
355 |
|
|
static void dummy_memwinon(struct board_info *b, unsigned int win)
|
356 |
|
|
{
|
357 |
|
|
}
|
358 |
|
|
|
359 |
|
|
static void dummy_memwinoff(struct board_info *b, unsigned int win)
|
360 |
|
|
{
|
361 |
|
|
}
|
362 |
|
|
|
363 |
|
|
static void dummy_globalwinon(struct channel *ch)
|
364 |
|
|
{
|
365 |
|
|
}
|
366 |
|
|
|
367 |
|
|
static void dummy_rxwinon(struct channel *ch)
|
368 |
|
|
{
|
369 |
|
|
}
|
370 |
|
|
|
371 |
|
|
static void dummy_txwinon(struct channel *ch)
|
372 |
|
|
{
|
373 |
|
|
}
|
374 |
|
|
|
375 |
|
|
static void dummy_memoff(struct channel *ch)
|
376 |
|
|
{
|
377 |
|
|
}
|
378 |
|
|
|
379 |
|
|
static void dummy_assertgwinon(struct channel *ch)
|
380 |
|
|
{
|
381 |
|
|
}
|
382 |
|
|
|
383 |
|
|
static void dummy_assertmemoff(struct channel *ch)
|
384 |
|
|
{
|
385 |
|
|
}
|
386 |
|
|
|
387 |
|
|
static struct channel *verifyChannel(struct tty_struct *tty)
|
388 |
|
|
{
|
389 |
|
|
/*
|
390 |
|
|
* This routine basically provides a sanity check. It insures that the
|
391 |
|
|
* channel returned is within the proper range of addresses as well as
|
392 |
|
|
* properly initialized. If some bogus info gets passed in
|
393 |
|
|
* through tty->driver_data this should catch it.
|
394 |
|
|
*/
|
395 |
|
|
if (tty) {
|
396 |
|
|
struct channel *ch = (struct channel *)tty->driver_data;
|
397 |
|
|
if ((ch >= &digi_channels[0]) && (ch < &digi_channels[nbdevs])) {
|
398 |
|
|
if (ch->magic == EPCA_MAGIC)
|
399 |
|
|
return ch;
|
400 |
|
|
}
|
401 |
|
|
}
|
402 |
|
|
return NULL;
|
403 |
|
|
}
|
404 |
|
|
|
405 |
|
|
static void pc_sched_event(struct channel *ch, int event)
|
406 |
|
|
{
|
407 |
|
|
/*
|
408 |
|
|
* We call this to schedule interrupt processing on some event. The
|
409 |
|
|
* kernel sees our request and calls the related routine in OUR driver.
|
410 |
|
|
*/
|
411 |
|
|
ch->event |= 1 << event;
|
412 |
|
|
schedule_work(&ch->tqueue);
|
413 |
|
|
}
|
414 |
|
|
|
415 |
|
|
static void epca_error(int line, char *msg)
|
416 |
|
|
{
|
417 |
|
|
printk(KERN_ERR "epca_error (Digi): line = %d %s\n",line,msg);
|
418 |
|
|
}
|
419 |
|
|
|
420 |
|
|
static void pc_close(struct tty_struct *tty, struct file *filp)
|
421 |
|
|
{
|
422 |
|
|
struct channel *ch;
|
423 |
|
|
unsigned long flags;
|
424 |
|
|
/*
|
425 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
426 |
|
|
* valid. This serves as a sanity check.
|
427 |
|
|
*/
|
428 |
|
|
if ((ch = verifyChannel(tty)) != NULL) {
|
429 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
430 |
|
|
if (tty_hung_up_p(filp)) {
|
431 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
432 |
|
|
return;
|
433 |
|
|
}
|
434 |
|
|
if (ch->count-- > 1) {
|
435 |
|
|
/* Begin channel is open more than once */
|
436 |
|
|
/*
|
437 |
|
|
* Return without doing anything. Someone might still
|
438 |
|
|
* be using the channel.
|
439 |
|
|
*/
|
440 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
441 |
|
|
return;
|
442 |
|
|
}
|
443 |
|
|
|
444 |
|
|
/* Port open only once go ahead with shutdown & reset */
|
445 |
|
|
BUG_ON(ch->count < 0);
|
446 |
|
|
|
447 |
|
|
/*
|
448 |
|
|
* Let the rest of the driver know the channel is being closed.
|
449 |
|
|
* This becomes important if an open is attempted before close
|
450 |
|
|
* is finished.
|
451 |
|
|
*/
|
452 |
|
|
ch->asyncflags |= ASYNC_CLOSING;
|
453 |
|
|
tty->closing = 1;
|
454 |
|
|
|
455 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
456 |
|
|
|
457 |
|
|
if (ch->asyncflags & ASYNC_INITIALIZED) {
|
458 |
|
|
/* Setup an event to indicate when the transmit buffer empties */
|
459 |
|
|
setup_empty_event(tty, ch);
|
460 |
|
|
tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */
|
461 |
|
|
}
|
462 |
|
|
if (tty->driver->flush_buffer)
|
463 |
|
|
tty->driver->flush_buffer(tty);
|
464 |
|
|
|
465 |
|
|
tty_ldisc_flush(tty);
|
466 |
|
|
shutdown(ch);
|
467 |
|
|
|
468 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
469 |
|
|
tty->closing = 0;
|
470 |
|
|
ch->event = 0;
|
471 |
|
|
ch->tty = NULL;
|
472 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
473 |
|
|
|
474 |
|
|
if (ch->blocked_open) {
|
475 |
|
|
if (ch->close_delay)
|
476 |
|
|
msleep_interruptible(jiffies_to_msecs(ch->close_delay));
|
477 |
|
|
wake_up_interruptible(&ch->open_wait);
|
478 |
|
|
}
|
479 |
|
|
ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED |
|
480 |
|
|
ASYNC_CLOSING);
|
481 |
|
|
wake_up_interruptible(&ch->close_wait);
|
482 |
|
|
}
|
483 |
|
|
}
|
484 |
|
|
|
485 |
|
|
static void shutdown(struct channel *ch)
|
486 |
|
|
{
|
487 |
|
|
unsigned long flags;
|
488 |
|
|
struct tty_struct *tty;
|
489 |
|
|
struct board_chan __iomem *bc;
|
490 |
|
|
|
491 |
|
|
if (!(ch->asyncflags & ASYNC_INITIALIZED))
|
492 |
|
|
return;
|
493 |
|
|
|
494 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
495 |
|
|
|
496 |
|
|
globalwinon(ch);
|
497 |
|
|
bc = ch->brdchan;
|
498 |
|
|
|
499 |
|
|
/*
|
500 |
|
|
* In order for an event to be generated on the receipt of data the
|
501 |
|
|
* idata flag must be set. Since we are shutting down, this is not
|
502 |
|
|
* necessary clear this flag.
|
503 |
|
|
*/
|
504 |
|
|
if (bc)
|
505 |
|
|
writeb(0, &bc->idata);
|
506 |
|
|
tty = ch->tty;
|
507 |
|
|
|
508 |
|
|
/* If we're a modem control device and HUPCL is on, drop RTS & DTR. */
|
509 |
|
|
if (tty->termios->c_cflag & HUPCL) {
|
510 |
|
|
ch->omodem &= ~(ch->m_rts | ch->m_dtr);
|
511 |
|
|
fepcmd(ch, SETMODEM, 0, ch->m_dtr | ch->m_rts, 10, 1);
|
512 |
|
|
}
|
513 |
|
|
memoff(ch);
|
514 |
|
|
|
515 |
|
|
/*
|
516 |
|
|
* The channel has officialy been closed. The next time it is opened it
|
517 |
|
|
* will have to reinitialized. Set a flag to indicate this.
|
518 |
|
|
*/
|
519 |
|
|
/* Prevent future Digi programmed interrupts from coming active */
|
520 |
|
|
ch->asyncflags &= ~ASYNC_INITIALIZED;
|
521 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
522 |
|
|
}
|
523 |
|
|
|
524 |
|
|
static void pc_hangup(struct tty_struct *tty)
|
525 |
|
|
{
|
526 |
|
|
struct channel *ch;
|
527 |
|
|
|
528 |
|
|
/*
|
529 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
530 |
|
|
* valid. This serves as a sanity check.
|
531 |
|
|
*/
|
532 |
|
|
if ((ch = verifyChannel(tty)) != NULL) {
|
533 |
|
|
unsigned long flags;
|
534 |
|
|
|
535 |
|
|
if (tty->driver->flush_buffer)
|
536 |
|
|
tty->driver->flush_buffer(tty);
|
537 |
|
|
tty_ldisc_flush(tty);
|
538 |
|
|
shutdown(ch);
|
539 |
|
|
|
540 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
541 |
|
|
ch->tty = NULL;
|
542 |
|
|
ch->event = 0;
|
543 |
|
|
ch->count = 0;
|
544 |
|
|
ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED);
|
545 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
546 |
|
|
wake_up_interruptible(&ch->open_wait);
|
547 |
|
|
}
|
548 |
|
|
}
|
549 |
|
|
|
550 |
|
|
static int pc_write(struct tty_struct *tty,
|
551 |
|
|
const unsigned char *buf, int bytesAvailable)
|
552 |
|
|
{
|
553 |
|
|
unsigned int head, tail;
|
554 |
|
|
int dataLen;
|
555 |
|
|
int size;
|
556 |
|
|
int amountCopied;
|
557 |
|
|
struct channel *ch;
|
558 |
|
|
unsigned long flags;
|
559 |
|
|
int remain;
|
560 |
|
|
struct board_chan __iomem *bc;
|
561 |
|
|
|
562 |
|
|
/*
|
563 |
|
|
* pc_write is primarily called directly by the kernel routine
|
564 |
|
|
* tty_write (Though it can also be called by put_char) found in
|
565 |
|
|
* tty_io.c. pc_write is passed a line discipline buffer where the data
|
566 |
|
|
* to be written out is stored. The line discipline implementation
|
567 |
|
|
* itself is done at the kernel level and is not brought into the
|
568 |
|
|
* driver.
|
569 |
|
|
*/
|
570 |
|
|
|
571 |
|
|
/*
|
572 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
573 |
|
|
* valid. This serves as a sanity check.
|
574 |
|
|
*/
|
575 |
|
|
if ((ch = verifyChannel(tty)) == NULL)
|
576 |
|
|
return 0;
|
577 |
|
|
|
578 |
|
|
/* Make a pointer to the channel data structure found on the board. */
|
579 |
|
|
bc = ch->brdchan;
|
580 |
|
|
size = ch->txbufsize;
|
581 |
|
|
amountCopied = 0;
|
582 |
|
|
|
583 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
584 |
|
|
globalwinon(ch);
|
585 |
|
|
|
586 |
|
|
head = readw(&bc->tin) & (size - 1);
|
587 |
|
|
tail = readw(&bc->tout);
|
588 |
|
|
|
589 |
|
|
if (tail != readw(&bc->tout))
|
590 |
|
|
tail = readw(&bc->tout);
|
591 |
|
|
tail &= (size - 1);
|
592 |
|
|
|
593 |
|
|
if (head >= tail) {
|
594 |
|
|
/* head has not wrapped */
|
595 |
|
|
/*
|
596 |
|
|
* remain (much like dataLen above) represents the total amount
|
597 |
|
|
* of space available on the card for data. Here dataLen
|
598 |
|
|
* represents the space existing between the head pointer and
|
599 |
|
|
* the end of buffer. This is important because a memcpy cannot
|
600 |
|
|
* be told to automatically wrap around when it hits the buffer
|
601 |
|
|
* end.
|
602 |
|
|
*/
|
603 |
|
|
dataLen = size - head;
|
604 |
|
|
remain = size - (head - tail) - 1;
|
605 |
|
|
} else {
|
606 |
|
|
/* head has wrapped around */
|
607 |
|
|
remain = tail - head - 1;
|
608 |
|
|
dataLen = remain;
|
609 |
|
|
}
|
610 |
|
|
/*
|
611 |
|
|
* Check the space on the card. If we have more data than space; reduce
|
612 |
|
|
* the amount of data to fit the space.
|
613 |
|
|
*/
|
614 |
|
|
bytesAvailable = min(remain, bytesAvailable);
|
615 |
|
|
txwinon(ch);
|
616 |
|
|
while (bytesAvailable > 0) {
|
617 |
|
|
/* there is data to copy onto card */
|
618 |
|
|
|
619 |
|
|
/*
|
620 |
|
|
* If head is not wrapped, the below will make sure the first
|
621 |
|
|
* data copy fills to the end of card buffer.
|
622 |
|
|
*/
|
623 |
|
|
dataLen = min(bytesAvailable, dataLen);
|
624 |
|
|
memcpy_toio(ch->txptr + head, buf, dataLen);
|
625 |
|
|
buf += dataLen;
|
626 |
|
|
head += dataLen;
|
627 |
|
|
amountCopied += dataLen;
|
628 |
|
|
bytesAvailable -= dataLen;
|
629 |
|
|
|
630 |
|
|
if (head >= size) {
|
631 |
|
|
head = 0;
|
632 |
|
|
dataLen = tail;
|
633 |
|
|
}
|
634 |
|
|
}
|
635 |
|
|
ch->statusflags |= TXBUSY;
|
636 |
|
|
globalwinon(ch);
|
637 |
|
|
writew(head, &bc->tin);
|
638 |
|
|
|
639 |
|
|
if ((ch->statusflags & LOWWAIT) == 0) {
|
640 |
|
|
ch->statusflags |= LOWWAIT;
|
641 |
|
|
writeb(1, &bc->ilow);
|
642 |
|
|
}
|
643 |
|
|
memoff(ch);
|
644 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
645 |
|
|
return amountCopied;
|
646 |
|
|
}
|
647 |
|
|
|
648 |
|
|
static void pc_put_char(struct tty_struct *tty, unsigned char c)
|
649 |
|
|
{
|
650 |
|
|
pc_write(tty, &c, 1);
|
651 |
|
|
}
|
652 |
|
|
|
653 |
|
|
static int pc_write_room(struct tty_struct *tty)
|
654 |
|
|
{
|
655 |
|
|
int remain;
|
656 |
|
|
struct channel *ch;
|
657 |
|
|
unsigned long flags;
|
658 |
|
|
unsigned int head, tail;
|
659 |
|
|
struct board_chan __iomem *bc;
|
660 |
|
|
|
661 |
|
|
remain = 0;
|
662 |
|
|
|
663 |
|
|
/*
|
664 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
665 |
|
|
* valid. This serves as a sanity check.
|
666 |
|
|
*/
|
667 |
|
|
if ((ch = verifyChannel(tty)) != NULL) {
|
668 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
669 |
|
|
globalwinon(ch);
|
670 |
|
|
|
671 |
|
|
bc = ch->brdchan;
|
672 |
|
|
head = readw(&bc->tin) & (ch->txbufsize - 1);
|
673 |
|
|
tail = readw(&bc->tout);
|
674 |
|
|
|
675 |
|
|
if (tail != readw(&bc->tout))
|
676 |
|
|
tail = readw(&bc->tout);
|
677 |
|
|
/* Wrap tail if necessary */
|
678 |
|
|
tail &= (ch->txbufsize - 1);
|
679 |
|
|
|
680 |
|
|
if ((remain = tail - head - 1) < 0 )
|
681 |
|
|
remain += ch->txbufsize;
|
682 |
|
|
|
683 |
|
|
if (remain && (ch->statusflags & LOWWAIT) == 0) {
|
684 |
|
|
ch->statusflags |= LOWWAIT;
|
685 |
|
|
writeb(1, &bc->ilow);
|
686 |
|
|
}
|
687 |
|
|
memoff(ch);
|
688 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
689 |
|
|
}
|
690 |
|
|
/* Return how much room is left on card */
|
691 |
|
|
return remain;
|
692 |
|
|
}
|
693 |
|
|
|
694 |
|
|
static int pc_chars_in_buffer(struct tty_struct *tty)
|
695 |
|
|
{
|
696 |
|
|
int chars;
|
697 |
|
|
unsigned int ctail, head, tail;
|
698 |
|
|
int remain;
|
699 |
|
|
unsigned long flags;
|
700 |
|
|
struct channel *ch;
|
701 |
|
|
struct board_chan __iomem *bc;
|
702 |
|
|
|
703 |
|
|
/*
|
704 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
705 |
|
|
* valid. This serves as a sanity check.
|
706 |
|
|
*/
|
707 |
|
|
if ((ch = verifyChannel(tty)) == NULL)
|
708 |
|
|
return 0;
|
709 |
|
|
|
710 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
711 |
|
|
globalwinon(ch);
|
712 |
|
|
|
713 |
|
|
bc = ch->brdchan;
|
714 |
|
|
tail = readw(&bc->tout);
|
715 |
|
|
head = readw(&bc->tin);
|
716 |
|
|
ctail = readw(&ch->mailbox->cout);
|
717 |
|
|
|
718 |
|
|
if (tail == head && readw(&ch->mailbox->cin) == ctail && readb(&bc->tbusy) == 0)
|
719 |
|
|
chars = 0;
|
720 |
|
|
else { /* Begin if some space on the card has been used */
|
721 |
|
|
head = readw(&bc->tin) & (ch->txbufsize - 1);
|
722 |
|
|
tail &= (ch->txbufsize - 1);
|
723 |
|
|
/*
|
724 |
|
|
* The logic here is basically opposite of the above
|
725 |
|
|
* pc_write_room here we are finding the amount of bytes in the
|
726 |
|
|
* buffer filled. Not the amount of bytes empty.
|
727 |
|
|
*/
|
728 |
|
|
if ((remain = tail - head - 1) < 0 )
|
729 |
|
|
remain += ch->txbufsize;
|
730 |
|
|
chars = (int)(ch->txbufsize - remain);
|
731 |
|
|
/*
|
732 |
|
|
* Make it possible to wakeup anything waiting for output in
|
733 |
|
|
* tty_ioctl.c, etc.
|
734 |
|
|
*
|
735 |
|
|
* If not already set. Setup an event to indicate when the
|
736 |
|
|
* transmit buffer empties.
|
737 |
|
|
*/
|
738 |
|
|
if (!(ch->statusflags & EMPTYWAIT))
|
739 |
|
|
setup_empty_event(tty,ch);
|
740 |
|
|
} /* End if some space on the card has been used */
|
741 |
|
|
memoff(ch);
|
742 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
743 |
|
|
/* Return number of characters residing on card. */
|
744 |
|
|
return chars;
|
745 |
|
|
}
|
746 |
|
|
|
747 |
|
|
static void pc_flush_buffer(struct tty_struct *tty)
|
748 |
|
|
{
|
749 |
|
|
unsigned int tail;
|
750 |
|
|
unsigned long flags;
|
751 |
|
|
struct channel *ch;
|
752 |
|
|
struct board_chan __iomem *bc;
|
753 |
|
|
/*
|
754 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
755 |
|
|
* valid. This serves as a sanity check.
|
756 |
|
|
*/
|
757 |
|
|
if ((ch = verifyChannel(tty)) == NULL)
|
758 |
|
|
return;
|
759 |
|
|
|
760 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
761 |
|
|
globalwinon(ch);
|
762 |
|
|
bc = ch->brdchan;
|
763 |
|
|
tail = readw(&bc->tout);
|
764 |
|
|
/* Have FEP move tout pointer; effectively flushing transmit buffer */
|
765 |
|
|
fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0);
|
766 |
|
|
memoff(ch);
|
767 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
768 |
|
|
tty_wakeup(tty);
|
769 |
|
|
}
|
770 |
|
|
|
771 |
|
|
static void pc_flush_chars(struct tty_struct *tty)
|
772 |
|
|
{
|
773 |
|
|
struct channel *ch;
|
774 |
|
|
/*
|
775 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
776 |
|
|
* valid. This serves as a sanity check.
|
777 |
|
|
*/
|
778 |
|
|
if ((ch = verifyChannel(tty)) != NULL) {
|
779 |
|
|
unsigned long flags;
|
780 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
781 |
|
|
/*
|
782 |
|
|
* If not already set and the transmitter is busy setup an
|
783 |
|
|
* event to indicate when the transmit empties.
|
784 |
|
|
*/
|
785 |
|
|
if ((ch->statusflags & TXBUSY) && !(ch->statusflags & EMPTYWAIT))
|
786 |
|
|
setup_empty_event(tty,ch);
|
787 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
788 |
|
|
}
|
789 |
|
|
}
|
790 |
|
|
|
791 |
|
|
static int block_til_ready(struct tty_struct *tty,
|
792 |
|
|
struct file *filp, struct channel *ch)
|
793 |
|
|
{
|
794 |
|
|
DECLARE_WAITQUEUE(wait,current);
|
795 |
|
|
int retval, do_clocal = 0;
|
796 |
|
|
unsigned long flags;
|
797 |
|
|
|
798 |
|
|
if (tty_hung_up_p(filp)) {
|
799 |
|
|
if (ch->asyncflags & ASYNC_HUP_NOTIFY)
|
800 |
|
|
retval = -EAGAIN;
|
801 |
|
|
else
|
802 |
|
|
retval = -ERESTARTSYS;
|
803 |
|
|
return retval;
|
804 |
|
|
}
|
805 |
|
|
|
806 |
|
|
/*
|
807 |
|
|
* If the device is in the middle of being closed, then block until
|
808 |
|
|
* it's done, and then try again.
|
809 |
|
|
*/
|
810 |
|
|
if (ch->asyncflags & ASYNC_CLOSING) {
|
811 |
|
|
interruptible_sleep_on(&ch->close_wait);
|
812 |
|
|
|
813 |
|
|
if (ch->asyncflags & ASYNC_HUP_NOTIFY)
|
814 |
|
|
return -EAGAIN;
|
815 |
|
|
else
|
816 |
|
|
return -ERESTARTSYS;
|
817 |
|
|
}
|
818 |
|
|
|
819 |
|
|
if (filp->f_flags & O_NONBLOCK) {
|
820 |
|
|
/*
|
821 |
|
|
* If non-blocking mode is set, then make the check up front
|
822 |
|
|
* and then exit.
|
823 |
|
|
*/
|
824 |
|
|
ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
|
825 |
|
|
return 0;
|
826 |
|
|
}
|
827 |
|
|
if (tty->termios->c_cflag & CLOCAL)
|
828 |
|
|
do_clocal = 1;
|
829 |
|
|
/* Block waiting for the carrier detect and the line to become free */
|
830 |
|
|
|
831 |
|
|
retval = 0;
|
832 |
|
|
add_wait_queue(&ch->open_wait, &wait);
|
833 |
|
|
|
834 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
835 |
|
|
/* We dec count so that pc_close will know when to free things */
|
836 |
|
|
if (!tty_hung_up_p(filp))
|
837 |
|
|
ch->count--;
|
838 |
|
|
ch->blocked_open++;
|
839 |
|
|
while (1) {
|
840 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
841 |
|
|
if (tty_hung_up_p(filp) ||
|
842 |
|
|
!(ch->asyncflags & ASYNC_INITIALIZED))
|
843 |
|
|
{
|
844 |
|
|
if (ch->asyncflags & ASYNC_HUP_NOTIFY)
|
845 |
|
|
retval = -EAGAIN;
|
846 |
|
|
else
|
847 |
|
|
retval = -ERESTARTSYS;
|
848 |
|
|
break;
|
849 |
|
|
}
|
850 |
|
|
if (!(ch->asyncflags & ASYNC_CLOSING) &&
|
851 |
|
|
(do_clocal || (ch->imodem & ch->dcd)))
|
852 |
|
|
break;
|
853 |
|
|
if (signal_pending(current)) {
|
854 |
|
|
retval = -ERESTARTSYS;
|
855 |
|
|
break;
|
856 |
|
|
}
|
857 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
858 |
|
|
/*
|
859 |
|
|
* Allow someone else to be scheduled. We will occasionally go
|
860 |
|
|
* through this loop until one of the above conditions change.
|
861 |
|
|
* The below schedule call will allow other processes to enter
|
862 |
|
|
* and prevent this loop from hogging the cpu.
|
863 |
|
|
*/
|
864 |
|
|
schedule();
|
865 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
866 |
|
|
}
|
867 |
|
|
|
868 |
|
|
__set_current_state(TASK_RUNNING);
|
869 |
|
|
remove_wait_queue(&ch->open_wait, &wait);
|
870 |
|
|
if (!tty_hung_up_p(filp))
|
871 |
|
|
ch->count++;
|
872 |
|
|
ch->blocked_open--;
|
873 |
|
|
|
874 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
875 |
|
|
|
876 |
|
|
if (retval)
|
877 |
|
|
return retval;
|
878 |
|
|
|
879 |
|
|
ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
|
880 |
|
|
return 0;
|
881 |
|
|
}
|
882 |
|
|
|
883 |
|
|
static int pc_open(struct tty_struct *tty, struct file * filp)
|
884 |
|
|
{
|
885 |
|
|
struct channel *ch;
|
886 |
|
|
unsigned long flags;
|
887 |
|
|
int line, retval, boardnum;
|
888 |
|
|
struct board_chan __iomem *bc;
|
889 |
|
|
unsigned int head;
|
890 |
|
|
|
891 |
|
|
line = tty->index;
|
892 |
|
|
if (line < 0 || line >= nbdevs)
|
893 |
|
|
return -ENODEV;
|
894 |
|
|
|
895 |
|
|
ch = &digi_channels[line];
|
896 |
|
|
boardnum = ch->boardnum;
|
897 |
|
|
|
898 |
|
|
/* Check status of board configured in system. */
|
899 |
|
|
|
900 |
|
|
/*
|
901 |
|
|
* I check to see if the epca_setup routine detected an user error. It
|
902 |
|
|
* might be better to put this in pc_init, but for the moment it goes
|
903 |
|
|
* here.
|
904 |
|
|
*/
|
905 |
|
|
if (invalid_lilo_config) {
|
906 |
|
|
if (setup_error_code & INVALID_BOARD_TYPE)
|
907 |
|
|
printk(KERN_ERR "epca: pc_open: Invalid board type specified in kernel options.\n");
|
908 |
|
|
if (setup_error_code & INVALID_NUM_PORTS)
|
909 |
|
|
printk(KERN_ERR "epca: pc_open: Invalid number of ports specified in kernel options.\n");
|
910 |
|
|
if (setup_error_code & INVALID_MEM_BASE)
|
911 |
|
|
printk(KERN_ERR "epca: pc_open: Invalid board memory address specified in kernel options.\n");
|
912 |
|
|
if (setup_error_code & INVALID_PORT_BASE)
|
913 |
|
|
printk(KERN_ERR "epca; pc_open: Invalid board port address specified in kernel options.\n");
|
914 |
|
|
if (setup_error_code & INVALID_BOARD_STATUS)
|
915 |
|
|
printk(KERN_ERR "epca: pc_open: Invalid board status specified in kernel options.\n");
|
916 |
|
|
if (setup_error_code & INVALID_ALTPIN)
|
917 |
|
|
printk(KERN_ERR "epca: pc_open: Invalid board altpin specified in kernel options;\n");
|
918 |
|
|
tty->driver_data = NULL; /* Mark this device as 'down' */
|
919 |
|
|
return -ENODEV;
|
920 |
|
|
}
|
921 |
|
|
if (boardnum >= num_cards || boards[boardnum].status == DISABLED) {
|
922 |
|
|
tty->driver_data = NULL; /* Mark this device as 'down' */
|
923 |
|
|
return(-ENODEV);
|
924 |
|
|
}
|
925 |
|
|
|
926 |
|
|
if ((bc = ch->brdchan) == 0) {
|
927 |
|
|
tty->driver_data = NULL;
|
928 |
|
|
return -ENODEV;
|
929 |
|
|
}
|
930 |
|
|
|
931 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
932 |
|
|
/*
|
933 |
|
|
* Every time a channel is opened, increment a counter. This is
|
934 |
|
|
* necessary because we do not wish to flush and shutdown the channel
|
935 |
|
|
* until the last app holding the channel open, closes it.
|
936 |
|
|
*/
|
937 |
|
|
ch->count++;
|
938 |
|
|
/*
|
939 |
|
|
* Set a kernel structures pointer to our local channel structure. This
|
940 |
|
|
* way we can get to it when passed only a tty struct.
|
941 |
|
|
*/
|
942 |
|
|
tty->driver_data = ch;
|
943 |
|
|
/*
|
944 |
|
|
* If this is the first time the channel has been opened, initialize
|
945 |
|
|
* the tty->termios struct otherwise let pc_close handle it.
|
946 |
|
|
*/
|
947 |
|
|
globalwinon(ch);
|
948 |
|
|
ch->statusflags = 0;
|
949 |
|
|
|
950 |
|
|
/* Save boards current modem status */
|
951 |
|
|
ch->imodem = readb(&bc->mstat);
|
952 |
|
|
|
953 |
|
|
/*
|
954 |
|
|
* Set receive head and tail ptrs to each other. This indicates no data
|
955 |
|
|
* available to read.
|
956 |
|
|
*/
|
957 |
|
|
head = readw(&bc->rin);
|
958 |
|
|
writew(head, &bc->rout);
|
959 |
|
|
|
960 |
|
|
/* Set the channels associated tty structure */
|
961 |
|
|
ch->tty = tty;
|
962 |
|
|
|
963 |
|
|
/*
|
964 |
|
|
* The below routine generally sets up parity, baud, flow control
|
965 |
|
|
* issues, etc.... It effect both control flags and input flags.
|
966 |
|
|
*/
|
967 |
|
|
epcaparam(tty,ch);
|
968 |
|
|
ch->asyncflags |= ASYNC_INITIALIZED;
|
969 |
|
|
memoff(ch);
|
970 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
971 |
|
|
|
972 |
|
|
retval = block_til_ready(tty, filp, ch);
|
973 |
|
|
if (retval)
|
974 |
|
|
return retval;
|
975 |
|
|
/*
|
976 |
|
|
* Set this again in case a hangup set it to zero while this open() was
|
977 |
|
|
* waiting for the line...
|
978 |
|
|
*/
|
979 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
980 |
|
|
ch->tty = tty;
|
981 |
|
|
globalwinon(ch);
|
982 |
|
|
/* Enable Digi Data events */
|
983 |
|
|
writeb(1, &bc->idata);
|
984 |
|
|
memoff(ch);
|
985 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
986 |
|
|
return 0;
|
987 |
|
|
}
|
988 |
|
|
|
989 |
|
|
static int __init epca_module_init(void)
|
990 |
|
|
{
|
991 |
|
|
return pc_init();
|
992 |
|
|
}
|
993 |
|
|
module_init(epca_module_init);
|
994 |
|
|
|
995 |
|
|
static struct pci_driver epca_driver;
|
996 |
|
|
|
997 |
|
|
static void __exit epca_module_exit(void)
|
998 |
|
|
{
|
999 |
|
|
int count, crd;
|
1000 |
|
|
struct board_info *bd;
|
1001 |
|
|
struct channel *ch;
|
1002 |
|
|
|
1003 |
|
|
del_timer_sync(&epca_timer);
|
1004 |
|
|
|
1005 |
|
|
if (tty_unregister_driver(pc_driver) || tty_unregister_driver(pc_info))
|
1006 |
|
|
{
|
1007 |
|
|
printk(KERN_WARNING "epca: cleanup_module failed to un-register tty driver\n");
|
1008 |
|
|
return;
|
1009 |
|
|
}
|
1010 |
|
|
put_tty_driver(pc_driver);
|
1011 |
|
|
put_tty_driver(pc_info);
|
1012 |
|
|
|
1013 |
|
|
for (crd = 0; crd < num_cards; crd++) {
|
1014 |
|
|
bd = &boards[crd];
|
1015 |
|
|
if (!bd) { /* sanity check */
|
1016 |
|
|
printk(KERN_ERR "<Error> - Digi : cleanup_module failed\n");
|
1017 |
|
|
return;
|
1018 |
|
|
}
|
1019 |
|
|
ch = card_ptr[crd];
|
1020 |
|
|
for (count = 0; count < bd->numports; count++, ch++) {
|
1021 |
|
|
if (ch && ch->tty)
|
1022 |
|
|
tty_hangup(ch->tty);
|
1023 |
|
|
}
|
1024 |
|
|
}
|
1025 |
|
|
pci_unregister_driver(&epca_driver);
|
1026 |
|
|
}
|
1027 |
|
|
module_exit(epca_module_exit);
|
1028 |
|
|
|
1029 |
|
|
static const struct tty_operations pc_ops = {
|
1030 |
|
|
.open = pc_open,
|
1031 |
|
|
.close = pc_close,
|
1032 |
|
|
.write = pc_write,
|
1033 |
|
|
.write_room = pc_write_room,
|
1034 |
|
|
.flush_buffer = pc_flush_buffer,
|
1035 |
|
|
.chars_in_buffer = pc_chars_in_buffer,
|
1036 |
|
|
.flush_chars = pc_flush_chars,
|
1037 |
|
|
.put_char = pc_put_char,
|
1038 |
|
|
.ioctl = pc_ioctl,
|
1039 |
|
|
.set_termios = pc_set_termios,
|
1040 |
|
|
.stop = pc_stop,
|
1041 |
|
|
.start = pc_start,
|
1042 |
|
|
.throttle = pc_throttle,
|
1043 |
|
|
.unthrottle = pc_unthrottle,
|
1044 |
|
|
.hangup = pc_hangup,
|
1045 |
|
|
};
|
1046 |
|
|
|
1047 |
|
|
static int info_open(struct tty_struct *tty, struct file * filp)
|
1048 |
|
|
{
|
1049 |
|
|
return 0;
|
1050 |
|
|
}
|
1051 |
|
|
|
1052 |
|
|
static struct tty_operations info_ops = {
|
1053 |
|
|
.open = info_open,
|
1054 |
|
|
.ioctl = info_ioctl,
|
1055 |
|
|
};
|
1056 |
|
|
|
1057 |
|
|
static int __init pc_init(void)
|
1058 |
|
|
{
|
1059 |
|
|
int crd;
|
1060 |
|
|
struct board_info *bd;
|
1061 |
|
|
unsigned char board_id = 0;
|
1062 |
|
|
int err = -ENOMEM;
|
1063 |
|
|
|
1064 |
|
|
int pci_boards_found, pci_count;
|
1065 |
|
|
|
1066 |
|
|
pci_count = 0;
|
1067 |
|
|
|
1068 |
|
|
pc_driver = alloc_tty_driver(MAX_ALLOC);
|
1069 |
|
|
if (!pc_driver)
|
1070 |
|
|
goto out1;
|
1071 |
|
|
|
1072 |
|
|
pc_info = alloc_tty_driver(MAX_ALLOC);
|
1073 |
|
|
if (!pc_info)
|
1074 |
|
|
goto out2;
|
1075 |
|
|
|
1076 |
|
|
/*
|
1077 |
|
|
* If epca_setup has not been ran by LILO set num_cards to defaults;
|
1078 |
|
|
* copy board structure defined by digiConfig into drivers board
|
1079 |
|
|
* structure. Note : If LILO has ran epca_setup then epca_setup will
|
1080 |
|
|
* handle defining num_cards as well as copying the data into the board
|
1081 |
|
|
* structure.
|
1082 |
|
|
*/
|
1083 |
|
|
if (!liloconfig) {
|
1084 |
|
|
/* driver has been configured via. epcaconfig */
|
1085 |
|
|
nbdevs = NBDEVS;
|
1086 |
|
|
num_cards = NUMCARDS;
|
1087 |
|
|
memcpy(&boards, &static_boards,
|
1088 |
|
|
sizeof(struct board_info) * NUMCARDS);
|
1089 |
|
|
}
|
1090 |
|
|
|
1091 |
|
|
/*
|
1092 |
|
|
* Note : If lilo was used to configure the driver and the ignore
|
1093 |
|
|
* epcaconfig option was choosen (digiepca=2) then nbdevs and num_cards
|
1094 |
|
|
* will equal 0 at this point. This is okay; PCI cards will still be
|
1095 |
|
|
* picked up if detected.
|
1096 |
|
|
*/
|
1097 |
|
|
|
1098 |
|
|
/*
|
1099 |
|
|
* Set up interrupt, we will worry about memory allocation in
|
1100 |
|
|
* post_fep_init.
|
1101 |
|
|
*/
|
1102 |
|
|
printk(KERN_INFO "DIGI epca driver version %s loaded.\n",VERSION);
|
1103 |
|
|
|
1104 |
|
|
/*
|
1105 |
|
|
* NOTE : This code assumes that the number of ports found in the
|
1106 |
|
|
* boards array is correct. This could be wrong if the card in question
|
1107 |
|
|
* is PCI (And therefore has no ports entry in the boards structure.)
|
1108 |
|
|
* The rest of the information will be valid for PCI because the
|
1109 |
|
|
* beginning of pc_init scans for PCI and determines i/o and base
|
1110 |
|
|
* memory addresses. I am not sure if it is possible to read the number
|
1111 |
|
|
* of ports supported by the card prior to it being booted (Since that
|
1112 |
|
|
* is the state it is in when pc_init is run). Because it is not
|
1113 |
|
|
* possible to query the number of supported ports until after the card
|
1114 |
|
|
* has booted; we are required to calculate the card_ptrs as the card
|
1115 |
|
|
* is initialized (Inside post_fep_init). The negative thing about this
|
1116 |
|
|
* approach is that digiDload's call to GET_INFO will have a bad port
|
1117 |
|
|
* value. (Since this is called prior to post_fep_init.)
|
1118 |
|
|
*/
|
1119 |
|
|
pci_boards_found = 0;
|
1120 |
|
|
if (num_cards < MAXBOARDS)
|
1121 |
|
|
pci_boards_found += init_PCI();
|
1122 |
|
|
num_cards += pci_boards_found;
|
1123 |
|
|
|
1124 |
|
|
pc_driver->owner = THIS_MODULE;
|
1125 |
|
|
pc_driver->name = "ttyD";
|
1126 |
|
|
pc_driver->major = DIGI_MAJOR;
|
1127 |
|
|
pc_driver->minor_start = 0;
|
1128 |
|
|
pc_driver->type = TTY_DRIVER_TYPE_SERIAL;
|
1129 |
|
|
pc_driver->subtype = SERIAL_TYPE_NORMAL;
|
1130 |
|
|
pc_driver->init_termios = tty_std_termios;
|
1131 |
|
|
pc_driver->init_termios.c_iflag = 0;
|
1132 |
|
|
pc_driver->init_termios.c_oflag = 0;
|
1133 |
|
|
pc_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
|
1134 |
|
|
pc_driver->init_termios.c_lflag = 0;
|
1135 |
|
|
pc_driver->init_termios.c_ispeed = 9600;
|
1136 |
|
|
pc_driver->init_termios.c_ospeed = 9600;
|
1137 |
|
|
pc_driver->flags = TTY_DRIVER_REAL_RAW;
|
1138 |
|
|
tty_set_operations(pc_driver, &pc_ops);
|
1139 |
|
|
|
1140 |
|
|
pc_info->owner = THIS_MODULE;
|
1141 |
|
|
pc_info->name = "digi_ctl";
|
1142 |
|
|
pc_info->major = DIGIINFOMAJOR;
|
1143 |
|
|
pc_info->minor_start = 0;
|
1144 |
|
|
pc_info->type = TTY_DRIVER_TYPE_SERIAL;
|
1145 |
|
|
pc_info->subtype = SERIAL_TYPE_INFO;
|
1146 |
|
|
pc_info->init_termios = tty_std_termios;
|
1147 |
|
|
pc_info->init_termios.c_iflag = 0;
|
1148 |
|
|
pc_info->init_termios.c_oflag = 0;
|
1149 |
|
|
pc_info->init_termios.c_lflag = 0;
|
1150 |
|
|
pc_info->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL;
|
1151 |
|
|
pc_info->init_termios.c_ispeed = 9600;
|
1152 |
|
|
pc_info->init_termios.c_ospeed = 9600;
|
1153 |
|
|
pc_info->flags = TTY_DRIVER_REAL_RAW;
|
1154 |
|
|
tty_set_operations(pc_info, &info_ops);
|
1155 |
|
|
|
1156 |
|
|
|
1157 |
|
|
for (crd = 0; crd < num_cards; crd++) {
|
1158 |
|
|
/*
|
1159 |
|
|
* This is where the appropriate memory handlers for the
|
1160 |
|
|
* hardware is set. Everything at runtime blindly jumps through
|
1161 |
|
|
* these vectors.
|
1162 |
|
|
*/
|
1163 |
|
|
|
1164 |
|
|
/* defined in epcaconfig.h */
|
1165 |
|
|
bd = &boards[crd];
|
1166 |
|
|
|
1167 |
|
|
switch (bd->type) {
|
1168 |
|
|
case PCXEM:
|
1169 |
|
|
case EISAXEM:
|
1170 |
|
|
bd->memwinon = pcxem_memwinon;
|
1171 |
|
|
bd->memwinoff = pcxem_memwinoff;
|
1172 |
|
|
bd->globalwinon = pcxem_globalwinon;
|
1173 |
|
|
bd->txwinon = pcxem_txwinon;
|
1174 |
|
|
bd->rxwinon = pcxem_rxwinon;
|
1175 |
|
|
bd->memoff = pcxem_memoff;
|
1176 |
|
|
bd->assertgwinon = dummy_assertgwinon;
|
1177 |
|
|
bd->assertmemoff = dummy_assertmemoff;
|
1178 |
|
|
break;
|
1179 |
|
|
|
1180 |
|
|
case PCIXEM:
|
1181 |
|
|
case PCIXRJ:
|
1182 |
|
|
case PCIXR:
|
1183 |
|
|
bd->memwinon = dummy_memwinon;
|
1184 |
|
|
bd->memwinoff = dummy_memwinoff;
|
1185 |
|
|
bd->globalwinon = dummy_globalwinon;
|
1186 |
|
|
bd->txwinon = dummy_txwinon;
|
1187 |
|
|
bd->rxwinon = dummy_rxwinon;
|
1188 |
|
|
bd->memoff = dummy_memoff;
|
1189 |
|
|
bd->assertgwinon = dummy_assertgwinon;
|
1190 |
|
|
bd->assertmemoff = dummy_assertmemoff;
|
1191 |
|
|
break;
|
1192 |
|
|
|
1193 |
|
|
case PCXE:
|
1194 |
|
|
case PCXEVE:
|
1195 |
|
|
bd->memwinon = pcxe_memwinon;
|
1196 |
|
|
bd->memwinoff = pcxe_memwinoff;
|
1197 |
|
|
bd->globalwinon = pcxe_globalwinon;
|
1198 |
|
|
bd->txwinon = pcxe_txwinon;
|
1199 |
|
|
bd->rxwinon = pcxe_rxwinon;
|
1200 |
|
|
bd->memoff = pcxe_memoff;
|
1201 |
|
|
bd->assertgwinon = dummy_assertgwinon;
|
1202 |
|
|
bd->assertmemoff = dummy_assertmemoff;
|
1203 |
|
|
break;
|
1204 |
|
|
|
1205 |
|
|
case PCXI:
|
1206 |
|
|
case PC64XE:
|
1207 |
|
|
bd->memwinon = pcxi_memwinon;
|
1208 |
|
|
bd->memwinoff = pcxi_memwinoff;
|
1209 |
|
|
bd->globalwinon = pcxi_globalwinon;
|
1210 |
|
|
bd->txwinon = pcxi_txwinon;
|
1211 |
|
|
bd->rxwinon = pcxi_rxwinon;
|
1212 |
|
|
bd->memoff = pcxi_memoff;
|
1213 |
|
|
bd->assertgwinon = pcxi_assertgwinon;
|
1214 |
|
|
bd->assertmemoff = pcxi_assertmemoff;
|
1215 |
|
|
break;
|
1216 |
|
|
|
1217 |
|
|
default:
|
1218 |
|
|
break;
|
1219 |
|
|
}
|
1220 |
|
|
|
1221 |
|
|
/*
|
1222 |
|
|
* Some cards need a memory segment to be defined for use in
|
1223 |
|
|
* transmit and receive windowing operations. These boards are
|
1224 |
|
|
* listed in the below switch. In the case of the XI the amount
|
1225 |
|
|
* of memory on the board is variable so the memory_seg is also
|
1226 |
|
|
* variable. This code determines what they segment should be.
|
1227 |
|
|
*/
|
1228 |
|
|
switch (bd->type) {
|
1229 |
|
|
case PCXE:
|
1230 |
|
|
case PCXEVE:
|
1231 |
|
|
case PC64XE:
|
1232 |
|
|
bd->memory_seg = 0xf000;
|
1233 |
|
|
break;
|
1234 |
|
|
|
1235 |
|
|
case PCXI:
|
1236 |
|
|
board_id = inb((int)bd->port);
|
1237 |
|
|
if ((board_id & 0x1) == 0x1) {
|
1238 |
|
|
/* it's an XI card */
|
1239 |
|
|
/* Is it a 64K board */
|
1240 |
|
|
if ((board_id & 0x30) == 0)
|
1241 |
|
|
bd->memory_seg = 0xf000;
|
1242 |
|
|
|
1243 |
|
|
/* Is it a 128K board */
|
1244 |
|
|
if ((board_id & 0x30) == 0x10)
|
1245 |
|
|
bd->memory_seg = 0xe000;
|
1246 |
|
|
|
1247 |
|
|
/* Is is a 256K board */
|
1248 |
|
|
if ((board_id & 0x30) == 0x20)
|
1249 |
|
|
bd->memory_seg = 0xc000;
|
1250 |
|
|
|
1251 |
|
|
/* Is it a 512K board */
|
1252 |
|
|
if ((board_id & 0x30) == 0x30)
|
1253 |
|
|
bd->memory_seg = 0x8000;
|
1254 |
|
|
} else
|
1255 |
|
|
printk(KERN_ERR "epca: Board at 0x%x doesn't appear to be an XI\n",(int)bd->port);
|
1256 |
|
|
break;
|
1257 |
|
|
}
|
1258 |
|
|
}
|
1259 |
|
|
|
1260 |
|
|
err = tty_register_driver(pc_driver);
|
1261 |
|
|
if (err) {
|
1262 |
|
|
printk(KERN_ERR "Couldn't register Digi PC/ driver");
|
1263 |
|
|
goto out3;
|
1264 |
|
|
}
|
1265 |
|
|
|
1266 |
|
|
err = tty_register_driver(pc_info);
|
1267 |
|
|
if (err) {
|
1268 |
|
|
printk(KERN_ERR "Couldn't register Digi PC/ info ");
|
1269 |
|
|
goto out4;
|
1270 |
|
|
}
|
1271 |
|
|
|
1272 |
|
|
/* Start up the poller to check for events on all enabled boards */
|
1273 |
|
|
init_timer(&epca_timer);
|
1274 |
|
|
epca_timer.function = epcapoll;
|
1275 |
|
|
mod_timer(&epca_timer, jiffies + HZ/25);
|
1276 |
|
|
return 0;
|
1277 |
|
|
|
1278 |
|
|
out4:
|
1279 |
|
|
tty_unregister_driver(pc_driver);
|
1280 |
|
|
out3:
|
1281 |
|
|
put_tty_driver(pc_info);
|
1282 |
|
|
out2:
|
1283 |
|
|
put_tty_driver(pc_driver);
|
1284 |
|
|
out1:
|
1285 |
|
|
return err;
|
1286 |
|
|
}
|
1287 |
|
|
|
1288 |
|
|
static void post_fep_init(unsigned int crd)
|
1289 |
|
|
{
|
1290 |
|
|
int i;
|
1291 |
|
|
void __iomem *memaddr;
|
1292 |
|
|
struct global_data __iomem *gd;
|
1293 |
|
|
struct board_info *bd;
|
1294 |
|
|
struct board_chan __iomem *bc;
|
1295 |
|
|
struct channel *ch;
|
1296 |
|
|
int shrinkmem = 0, lowwater;
|
1297 |
|
|
|
1298 |
|
|
/*
|
1299 |
|
|
* This call is made by the user via. the ioctl call DIGI_INIT. It is
|
1300 |
|
|
* responsible for setting up all the card specific stuff.
|
1301 |
|
|
*/
|
1302 |
|
|
bd = &boards[crd];
|
1303 |
|
|
|
1304 |
|
|
/*
|
1305 |
|
|
* If this is a PCI board, get the port info. Remember PCI cards do not
|
1306 |
|
|
* have entries into the epcaconfig.h file, so we can't get the number
|
1307 |
|
|
* of ports from it. Unfortunetly, this means that anyone doing a
|
1308 |
|
|
* DIGI_GETINFO before the board has booted will get an invalid number
|
1309 |
|
|
* of ports returned (It should return 0). Calls to DIGI_GETINFO after
|
1310 |
|
|
* DIGI_INIT has been called will return the proper values.
|
1311 |
|
|
*/
|
1312 |
|
|
if (bd->type >= PCIXEM) { /* Begin get PCI number of ports */
|
1313 |
|
|
/*
|
1314 |
|
|
* Below we use XEMPORTS as a memory offset regardless of which
|
1315 |
|
|
* PCI card it is. This is because all of the supported PCI
|
1316 |
|
|
* cards have the same memory offset for the channel data. This
|
1317 |
|
|
* will have to be changed if we ever develop a PCI/XE card.
|
1318 |
|
|
* NOTE : The FEP manual states that the port offset is 0xC22
|
1319 |
|
|
* as opposed to 0xC02. This is only true for PC/XE, and PC/XI
|
1320 |
|
|
* cards; not for the XEM, or CX series. On the PCI cards the
|
1321 |
|
|
* number of ports is determined by reading a ID PROM located
|
1322 |
|
|
* in the box attached to the card. The card can then determine
|
1323 |
|
|
* the index the id to determine the number of ports available.
|
1324 |
|
|
* (FYI - The id should be located at 0x1ac (And may use up to
|
1325 |
|
|
* 4 bytes if the box in question is a XEM or CX)).
|
1326 |
|
|
*/
|
1327 |
|
|
/* PCI cards are already remapped at this point ISA are not */
|
1328 |
|
|
bd->numports = readw(bd->re_map_membase + XEMPORTS);
|
1329 |
|
|
epcaassert(bd->numports <= 64,"PCI returned a invalid number of ports");
|
1330 |
|
|
nbdevs += (bd->numports);
|
1331 |
|
|
} else {
|
1332 |
|
|
/* Fix up the mappings for ISA/EISA etc */
|
1333 |
|
|
/* FIXME: 64K - can we be smarter ? */
|
1334 |
|
|
bd->re_map_membase = ioremap(bd->membase, 0x10000);
|
1335 |
|
|
}
|
1336 |
|
|
|
1337 |
|
|
if (crd != 0)
|
1338 |
|
|
card_ptr[crd] = card_ptr[crd-1] + boards[crd-1].numports;
|
1339 |
|
|
else
|
1340 |
|
|
card_ptr[crd] = &digi_channels[crd]; /* <- For card 0 only */
|
1341 |
|
|
|
1342 |
|
|
ch = card_ptr[crd];
|
1343 |
|
|
epcaassert(ch <= &digi_channels[nbdevs - 1], "ch out of range");
|
1344 |
|
|
|
1345 |
|
|
memaddr = bd->re_map_membase;
|
1346 |
|
|
|
1347 |
|
|
/*
|
1348 |
|
|
* The below assignment will set bc to point at the BEGINING of the
|
1349 |
|
|
* cards channel structures. For 1 card there will be between 8 and 64
|
1350 |
|
|
* of these structures.
|
1351 |
|
|
*/
|
1352 |
|
|
bc = memaddr + CHANSTRUCT;
|
1353 |
|
|
|
1354 |
|
|
/*
|
1355 |
|
|
* The below assignment will set gd to point at the BEGINING of global
|
1356 |
|
|
* memory address 0xc00. The first data in that global memory actually
|
1357 |
|
|
* starts at address 0xc1a. The command in pointer begins at 0xd10.
|
1358 |
|
|
*/
|
1359 |
|
|
gd = memaddr + GLOBAL;
|
1360 |
|
|
|
1361 |
|
|
/*
|
1362 |
|
|
* XEPORTS (address 0xc22) points at the number of channels the card
|
1363 |
|
|
* supports. (For 64XE, XI, XEM, and XR use 0xc02)
|
1364 |
|
|
*/
|
1365 |
|
|
if ((bd->type == PCXEVE || bd->type == PCXE) && (readw(memaddr + XEPORTS) < 3))
|
1366 |
|
|
shrinkmem = 1;
|
1367 |
|
|
if (bd->type < PCIXEM)
|
1368 |
|
|
if (!request_region((int)bd->port, 4, board_desc[bd->type]))
|
1369 |
|
|
return;
|
1370 |
|
|
memwinon(bd, 0);
|
1371 |
|
|
|
1372 |
|
|
/*
|
1373 |
|
|
* Remember ch is the main drivers channels structure, while bc is the
|
1374 |
|
|
* cards channel structure.
|
1375 |
|
|
*/
|
1376 |
|
|
for (i = 0; i < bd->numports; i++, ch++, bc++) {
|
1377 |
|
|
unsigned long flags;
|
1378 |
|
|
u16 tseg, rseg;
|
1379 |
|
|
|
1380 |
|
|
ch->brdchan = bc;
|
1381 |
|
|
ch->mailbox = gd;
|
1382 |
|
|
INIT_WORK(&ch->tqueue, do_softint);
|
1383 |
|
|
ch->board = &boards[crd];
|
1384 |
|
|
|
1385 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
1386 |
|
|
switch (bd->type) {
|
1387 |
|
|
/*
|
1388 |
|
|
* Since some of the boards use different bitmaps for
|
1389 |
|
|
* their control signals we cannot hard code these
|
1390 |
|
|
* values and retain portability. We virtualize this
|
1391 |
|
|
* data here.
|
1392 |
|
|
*/
|
1393 |
|
|
case EISAXEM:
|
1394 |
|
|
case PCXEM:
|
1395 |
|
|
case PCIXEM:
|
1396 |
|
|
case PCIXRJ:
|
1397 |
|
|
case PCIXR:
|
1398 |
|
|
ch->m_rts = 0x02;
|
1399 |
|
|
ch->m_dcd = 0x80;
|
1400 |
|
|
ch->m_dsr = 0x20;
|
1401 |
|
|
ch->m_cts = 0x10;
|
1402 |
|
|
ch->m_ri = 0x40;
|
1403 |
|
|
ch->m_dtr = 0x01;
|
1404 |
|
|
break;
|
1405 |
|
|
|
1406 |
|
|
case PCXE:
|
1407 |
|
|
case PCXEVE:
|
1408 |
|
|
case PCXI:
|
1409 |
|
|
case PC64XE:
|
1410 |
|
|
ch->m_rts = 0x02;
|
1411 |
|
|
ch->m_dcd = 0x08;
|
1412 |
|
|
ch->m_dsr = 0x10;
|
1413 |
|
|
ch->m_cts = 0x20;
|
1414 |
|
|
ch->m_ri = 0x40;
|
1415 |
|
|
ch->m_dtr = 0x80;
|
1416 |
|
|
break;
|
1417 |
|
|
}
|
1418 |
|
|
|
1419 |
|
|
if (boards[crd].altpin) {
|
1420 |
|
|
ch->dsr = ch->m_dcd;
|
1421 |
|
|
ch->dcd = ch->m_dsr;
|
1422 |
|
|
ch->digiext.digi_flags |= DIGI_ALTPIN;
|
1423 |
|
|
} else {
|
1424 |
|
|
ch->dcd = ch->m_dcd;
|
1425 |
|
|
ch->dsr = ch->m_dsr;
|
1426 |
|
|
}
|
1427 |
|
|
|
1428 |
|
|
ch->boardnum = crd;
|
1429 |
|
|
ch->channelnum = i;
|
1430 |
|
|
ch->magic = EPCA_MAGIC;
|
1431 |
|
|
ch->tty = NULL;
|
1432 |
|
|
|
1433 |
|
|
if (shrinkmem) {
|
1434 |
|
|
fepcmd(ch, SETBUFFER, 32, 0, 0, 0);
|
1435 |
|
|
shrinkmem = 0;
|
1436 |
|
|
}
|
1437 |
|
|
|
1438 |
|
|
tseg = readw(&bc->tseg);
|
1439 |
|
|
rseg = readw(&bc->rseg);
|
1440 |
|
|
|
1441 |
|
|
switch (bd->type) {
|
1442 |
|
|
case PCIXEM:
|
1443 |
|
|
case PCIXRJ:
|
1444 |
|
|
case PCIXR:
|
1445 |
|
|
/* Cover all the 2MEG cards */
|
1446 |
|
|
ch->txptr = memaddr + ((tseg << 4) & 0x1fffff);
|
1447 |
|
|
ch->rxptr = memaddr + ((rseg << 4) & 0x1fffff);
|
1448 |
|
|
ch->txwin = FEPWIN | (tseg >> 11);
|
1449 |
|
|
ch->rxwin = FEPWIN | (rseg >> 11);
|
1450 |
|
|
break;
|
1451 |
|
|
|
1452 |
|
|
case PCXEM:
|
1453 |
|
|
case EISAXEM:
|
1454 |
|
|
/* Cover all the 32K windowed cards */
|
1455 |
|
|
/* Mask equal to window size - 1 */
|
1456 |
|
|
ch->txptr = memaddr + ((tseg << 4) & 0x7fff);
|
1457 |
|
|
ch->rxptr = memaddr + ((rseg << 4) & 0x7fff);
|
1458 |
|
|
ch->txwin = FEPWIN | (tseg >> 11);
|
1459 |
|
|
ch->rxwin = FEPWIN | (rseg >> 11);
|
1460 |
|
|
break;
|
1461 |
|
|
|
1462 |
|
|
case PCXEVE:
|
1463 |
|
|
case PCXE:
|
1464 |
|
|
ch->txptr = memaddr + (((tseg - bd->memory_seg) << 4) & 0x1fff);
|
1465 |
|
|
ch->txwin = FEPWIN | ((tseg - bd->memory_seg) >> 9);
|
1466 |
|
|
ch->rxptr = memaddr + (((rseg - bd->memory_seg) << 4) & 0x1fff);
|
1467 |
|
|
ch->rxwin = FEPWIN | ((rseg - bd->memory_seg) >>9 );
|
1468 |
|
|
break;
|
1469 |
|
|
|
1470 |
|
|
case PCXI:
|
1471 |
|
|
case PC64XE:
|
1472 |
|
|
ch->txptr = memaddr + ((tseg - bd->memory_seg) << 4);
|
1473 |
|
|
ch->rxptr = memaddr + ((rseg - bd->memory_seg) << 4);
|
1474 |
|
|
ch->txwin = ch->rxwin = 0;
|
1475 |
|
|
break;
|
1476 |
|
|
}
|
1477 |
|
|
|
1478 |
|
|
ch->txbufhead = 0;
|
1479 |
|
|
ch->txbufsize = readw(&bc->tmax) + 1;
|
1480 |
|
|
|
1481 |
|
|
ch->rxbufhead = 0;
|
1482 |
|
|
ch->rxbufsize = readw(&bc->rmax) + 1;
|
1483 |
|
|
|
1484 |
|
|
lowwater = ch->txbufsize >= 2000 ? 1024 : (ch->txbufsize / 2);
|
1485 |
|
|
|
1486 |
|
|
/* Set transmitter low water mark */
|
1487 |
|
|
fepcmd(ch, STXLWATER, lowwater, 0, 10, 0);
|
1488 |
|
|
|
1489 |
|
|
/* Set receiver low water mark */
|
1490 |
|
|
fepcmd(ch, SRXLWATER, (ch->rxbufsize / 4), 0, 10, 0);
|
1491 |
|
|
|
1492 |
|
|
/* Set receiver high water mark */
|
1493 |
|
|
fepcmd(ch, SRXHWATER, (3 * ch->rxbufsize / 4), 0, 10, 0);
|
1494 |
|
|
|
1495 |
|
|
writew(100, &bc->edelay);
|
1496 |
|
|
writeb(1, &bc->idata);
|
1497 |
|
|
|
1498 |
|
|
ch->startc = readb(&bc->startc);
|
1499 |
|
|
ch->stopc = readb(&bc->stopc);
|
1500 |
|
|
ch->startca = readb(&bc->startca);
|
1501 |
|
|
ch->stopca = readb(&bc->stopca);
|
1502 |
|
|
|
1503 |
|
|
ch->fepcflag = 0;
|
1504 |
|
|
ch->fepiflag = 0;
|
1505 |
|
|
ch->fepoflag = 0;
|
1506 |
|
|
ch->fepstartc = 0;
|
1507 |
|
|
ch->fepstopc = 0;
|
1508 |
|
|
ch->fepstartca = 0;
|
1509 |
|
|
ch->fepstopca = 0;
|
1510 |
|
|
|
1511 |
|
|
ch->close_delay = 50;
|
1512 |
|
|
ch->count = 0;
|
1513 |
|
|
ch->blocked_open = 0;
|
1514 |
|
|
init_waitqueue_head(&ch->open_wait);
|
1515 |
|
|
init_waitqueue_head(&ch->close_wait);
|
1516 |
|
|
|
1517 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
1518 |
|
|
}
|
1519 |
|
|
|
1520 |
|
|
printk(KERN_INFO
|
1521 |
|
|
"Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n",
|
1522 |
|
|
VERSION, board_desc[bd->type], (long)bd->port, (long)bd->membase, bd->numports);
|
1523 |
|
|
memwinoff(bd, 0);
|
1524 |
|
|
}
|
1525 |
|
|
|
1526 |
|
|
static void epcapoll(unsigned long ignored)
|
1527 |
|
|
{
|
1528 |
|
|
unsigned long flags;
|
1529 |
|
|
int crd;
|
1530 |
|
|
volatile unsigned int head, tail;
|
1531 |
|
|
struct channel *ch;
|
1532 |
|
|
struct board_info *bd;
|
1533 |
|
|
|
1534 |
|
|
/*
|
1535 |
|
|
* This routine is called upon every timer interrupt. Even though the
|
1536 |
|
|
* Digi series cards are capable of generating interrupts this method
|
1537 |
|
|
* of non-looping polling is more efficient. This routine checks for
|
1538 |
|
|
* card generated events (Such as receive data, are transmit buffer
|
1539 |
|
|
* empty) and acts on those events.
|
1540 |
|
|
*/
|
1541 |
|
|
for (crd = 0; crd < num_cards; crd++) {
|
1542 |
|
|
bd = &boards[crd];
|
1543 |
|
|
ch = card_ptr[crd];
|
1544 |
|
|
|
1545 |
|
|
if ((bd->status == DISABLED) || digi_poller_inhibited)
|
1546 |
|
|
continue;
|
1547 |
|
|
|
1548 |
|
|
/*
|
1549 |
|
|
* assertmemoff is not needed here; indeed it is an empty
|
1550 |
|
|
* subroutine. It is being kept because future boards may need
|
1551 |
|
|
* this as well as some legacy boards.
|
1552 |
|
|
*/
|
1553 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
1554 |
|
|
|
1555 |
|
|
assertmemoff(ch);
|
1556 |
|
|
|
1557 |
|
|
globalwinon(ch);
|
1558 |
|
|
|
1559 |
|
|
/*
|
1560 |
|
|
* In this case head and tail actually refer to the event queue
|
1561 |
|
|
* not the transmit or receive queue.
|
1562 |
|
|
*/
|
1563 |
|
|
head = readw(&ch->mailbox->ein);
|
1564 |
|
|
tail = readw(&ch->mailbox->eout);
|
1565 |
|
|
|
1566 |
|
|
/* If head isn't equal to tail we have an event */
|
1567 |
|
|
if (head != tail)
|
1568 |
|
|
doevent(crd);
|
1569 |
|
|
memoff(ch);
|
1570 |
|
|
|
1571 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
1572 |
|
|
} /* End for each card */
|
1573 |
|
|
mod_timer(&epca_timer, jiffies + (HZ / 25));
|
1574 |
|
|
}
|
1575 |
|
|
|
1576 |
|
|
static void doevent(int crd)
|
1577 |
|
|
{
|
1578 |
|
|
void __iomem *eventbuf;
|
1579 |
|
|
struct channel *ch, *chan0;
|
1580 |
|
|
static struct tty_struct *tty;
|
1581 |
|
|
struct board_info *bd;
|
1582 |
|
|
struct board_chan __iomem *bc;
|
1583 |
|
|
unsigned int tail, head;
|
1584 |
|
|
int event, channel;
|
1585 |
|
|
int mstat, lstat;
|
1586 |
|
|
|
1587 |
|
|
/*
|
1588 |
|
|
* This subroutine is called by epcapoll when an event is detected
|
1589 |
|
|
* in the event queue. This routine responds to those events.
|
1590 |
|
|
*/
|
1591 |
|
|
bd = &boards[crd];
|
1592 |
|
|
|
1593 |
|
|
chan0 = card_ptr[crd];
|
1594 |
|
|
epcaassert(chan0 <= &digi_channels[nbdevs - 1], "ch out of range");
|
1595 |
|
|
assertgwinon(chan0);
|
1596 |
|
|
while ((tail = readw(&chan0->mailbox->eout)) != (head = readw(&chan0->mailbox->ein))) { /* Begin while something in event queue */
|
1597 |
|
|
assertgwinon(chan0);
|
1598 |
|
|
eventbuf = bd->re_map_membase + tail + ISTART;
|
1599 |
|
|
/* Get the channel the event occurred on */
|
1600 |
|
|
channel = readb(eventbuf);
|
1601 |
|
|
/* Get the actual event code that occurred */
|
1602 |
|
|
event = readb(eventbuf + 1);
|
1603 |
|
|
/*
|
1604 |
|
|
* The two assignments below get the current modem status
|
1605 |
|
|
* (mstat) and the previous modem status (lstat). These are
|
1606 |
|
|
* useful becuase an event could signal a change in modem
|
1607 |
|
|
* signals itself.
|
1608 |
|
|
*/
|
1609 |
|
|
mstat = readb(eventbuf + 2);
|
1610 |
|
|
lstat = readb(eventbuf + 3);
|
1611 |
|
|
|
1612 |
|
|
ch = chan0 + channel;
|
1613 |
|
|
if ((unsigned)channel >= bd->numports || !ch) {
|
1614 |
|
|
if (channel >= bd->numports)
|
1615 |
|
|
ch = chan0;
|
1616 |
|
|
bc = ch->brdchan;
|
1617 |
|
|
goto next;
|
1618 |
|
|
}
|
1619 |
|
|
|
1620 |
|
|
if ((bc = ch->brdchan) == NULL)
|
1621 |
|
|
goto next;
|
1622 |
|
|
|
1623 |
|
|
if (event & DATA_IND) { /* Begin DATA_IND */
|
1624 |
|
|
receive_data(ch);
|
1625 |
|
|
assertgwinon(ch);
|
1626 |
|
|
} /* End DATA_IND */
|
1627 |
|
|
/* else *//* Fix for DCD transition missed bug */
|
1628 |
|
|
if (event & MODEMCHG_IND) {
|
1629 |
|
|
/* A modem signal change has been indicated */
|
1630 |
|
|
ch->imodem = mstat;
|
1631 |
|
|
if (ch->asyncflags & ASYNC_CHECK_CD) {
|
1632 |
|
|
if (mstat & ch->dcd) /* We are now receiving dcd */
|
1633 |
|
|
wake_up_interruptible(&ch->open_wait);
|
1634 |
|
|
else
|
1635 |
|
|
pc_sched_event(ch, EPCA_EVENT_HANGUP); /* No dcd; hangup */
|
1636 |
|
|
}
|
1637 |
|
|
}
|
1638 |
|
|
tty = ch->tty;
|
1639 |
|
|
if (tty) {
|
1640 |
|
|
if (event & BREAK_IND) {
|
1641 |
|
|
/* A break has been indicated */
|
1642 |
|
|
tty_insert_flip_char(tty, 0, TTY_BREAK);
|
1643 |
|
|
tty_schedule_flip(tty);
|
1644 |
|
|
} else if (event & LOWTX_IND) {
|
1645 |
|
|
if (ch->statusflags & LOWWAIT) {
|
1646 |
|
|
ch->statusflags &= ~LOWWAIT;
|
1647 |
|
|
tty_wakeup(tty);
|
1648 |
|
|
}
|
1649 |
|
|
} else if (event & EMPTYTX_IND) {
|
1650 |
|
|
/* This event is generated by setup_empty_event */
|
1651 |
|
|
ch->statusflags &= ~TXBUSY;
|
1652 |
|
|
if (ch->statusflags & EMPTYWAIT) {
|
1653 |
|
|
ch->statusflags &= ~EMPTYWAIT;
|
1654 |
|
|
tty_wakeup(tty);
|
1655 |
|
|
}
|
1656 |
|
|
}
|
1657 |
|
|
}
|
1658 |
|
|
next:
|
1659 |
|
|
globalwinon(ch);
|
1660 |
|
|
BUG_ON(!bc);
|
1661 |
|
|
writew(1, &bc->idata);
|
1662 |
|
|
writew((tail + 4) & (IMAX - ISTART - 4), &chan0->mailbox->eout);
|
1663 |
|
|
globalwinon(chan0);
|
1664 |
|
|
} /* End while something in event queue */
|
1665 |
|
|
}
|
1666 |
|
|
|
1667 |
|
|
static void fepcmd(struct channel *ch, int cmd, int word_or_byte,
|
1668 |
|
|
int byte2, int ncmds, int bytecmd)
|
1669 |
|
|
{
|
1670 |
|
|
unchar __iomem *memaddr;
|
1671 |
|
|
unsigned int head, cmdTail, cmdStart, cmdMax;
|
1672 |
|
|
long count;
|
1673 |
|
|
int n;
|
1674 |
|
|
|
1675 |
|
|
/* This is the routine in which commands may be passed to the card. */
|
1676 |
|
|
|
1677 |
|
|
if (ch->board->status == DISABLED)
|
1678 |
|
|
return;
|
1679 |
|
|
assertgwinon(ch);
|
1680 |
|
|
/* Remember head (As well as max) is just an offset not a base addr */
|
1681 |
|
|
head = readw(&ch->mailbox->cin);
|
1682 |
|
|
/* cmdStart is a base address */
|
1683 |
|
|
cmdStart = readw(&ch->mailbox->cstart);
|
1684 |
|
|
/*
|
1685 |
|
|
* We do the addition below because we do not want a max pointer
|
1686 |
|
|
* relative to cmdStart. We want a max pointer that points at the
|
1687 |
|
|
* physical end of the command queue.
|
1688 |
|
|
*/
|
1689 |
|
|
cmdMax = (cmdStart + 4 + readw(&ch->mailbox->cmax));
|
1690 |
|
|
memaddr = ch->board->re_map_membase;
|
1691 |
|
|
|
1692 |
|
|
if (head >= (cmdMax - cmdStart) || (head & 03)) {
|
1693 |
|
|
printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", __LINE__, cmd, head);
|
1694 |
|
|
printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", __LINE__, cmdMax, cmdStart);
|
1695 |
|
|
return;
|
1696 |
|
|
}
|
1697 |
|
|
if (bytecmd) {
|
1698 |
|
|
writeb(cmd, memaddr + head + cmdStart + 0);
|
1699 |
|
|
writeb(ch->channelnum, memaddr + head + cmdStart + 1);
|
1700 |
|
|
/* Below word_or_byte is bits to set */
|
1701 |
|
|
writeb(word_or_byte, memaddr + head + cmdStart + 2);
|
1702 |
|
|
/* Below byte2 is bits to reset */
|
1703 |
|
|
writeb(byte2, memaddr + head + cmdStart + 3);
|
1704 |
|
|
} else {
|
1705 |
|
|
writeb(cmd, memaddr + head + cmdStart + 0);
|
1706 |
|
|
writeb(ch->channelnum, memaddr + head + cmdStart + 1);
|
1707 |
|
|
writeb(word_or_byte, memaddr + head + cmdStart + 2);
|
1708 |
|
|
}
|
1709 |
|
|
head = (head + 4) & (cmdMax - cmdStart - 4);
|
1710 |
|
|
writew(head, &ch->mailbox->cin);
|
1711 |
|
|
count = FEPTIMEOUT;
|
1712 |
|
|
|
1713 |
|
|
for (;;) {
|
1714 |
|
|
count--;
|
1715 |
|
|
if (count == 0) {
|
1716 |
|
|
printk(KERN_ERR "<Error> - Fep not responding in fepcmd()\n");
|
1717 |
|
|
return;
|
1718 |
|
|
}
|
1719 |
|
|
head = readw(&ch->mailbox->cin);
|
1720 |
|
|
cmdTail = readw(&ch->mailbox->cout);
|
1721 |
|
|
n = (head - cmdTail) & (cmdMax - cmdStart - 4);
|
1722 |
|
|
/*
|
1723 |
|
|
* Basically this will break when the FEP acknowledges the
|
1724 |
|
|
* command by incrementing cmdTail (Making it equal to head).
|
1725 |
|
|
*/
|
1726 |
|
|
if (n <= ncmds * (sizeof(short) * 4))
|
1727 |
|
|
break;
|
1728 |
|
|
}
|
1729 |
|
|
}
|
1730 |
|
|
|
1731 |
|
|
/*
|
1732 |
|
|
* Digi products use fields in their channels structures that are very similar
|
1733 |
|
|
* to the c_cflag and c_iflag fields typically found in UNIX termios
|
1734 |
|
|
* structures. The below three routines allow mappings between these hardware
|
1735 |
|
|
* "flags" and their respective Linux flags.
|
1736 |
|
|
*/
|
1737 |
|
|
static unsigned termios2digi_h(struct channel *ch, unsigned cflag)
|
1738 |
|
|
{
|
1739 |
|
|
unsigned res = 0;
|
1740 |
|
|
|
1741 |
|
|
if (cflag & CRTSCTS) {
|
1742 |
|
|
ch->digiext.digi_flags |= (RTSPACE | CTSPACE);
|
1743 |
|
|
res |= ((ch->m_cts) | (ch->m_rts));
|
1744 |
|
|
}
|
1745 |
|
|
|
1746 |
|
|
if (ch->digiext.digi_flags & RTSPACE)
|
1747 |
|
|
res |= ch->m_rts;
|
1748 |
|
|
|
1749 |
|
|
if (ch->digiext.digi_flags & DTRPACE)
|
1750 |
|
|
res |= ch->m_dtr;
|
1751 |
|
|
|
1752 |
|
|
if (ch->digiext.digi_flags & CTSPACE)
|
1753 |
|
|
res |= ch->m_cts;
|
1754 |
|
|
|
1755 |
|
|
if (ch->digiext.digi_flags & DSRPACE)
|
1756 |
|
|
res |= ch->dsr;
|
1757 |
|
|
|
1758 |
|
|
if (ch->digiext.digi_flags & DCDPACE)
|
1759 |
|
|
res |= ch->dcd;
|
1760 |
|
|
|
1761 |
|
|
if (res & (ch->m_rts))
|
1762 |
|
|
ch->digiext.digi_flags |= RTSPACE;
|
1763 |
|
|
|
1764 |
|
|
if (res & (ch->m_cts))
|
1765 |
|
|
ch->digiext.digi_flags |= CTSPACE;
|
1766 |
|
|
|
1767 |
|
|
return res;
|
1768 |
|
|
}
|
1769 |
|
|
|
1770 |
|
|
static unsigned termios2digi_i(struct channel *ch, unsigned iflag)
|
1771 |
|
|
{
|
1772 |
|
|
unsigned res = iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK |
|
1773 |
|
|
INPCK | ISTRIP|IXON|IXANY|IXOFF);
|
1774 |
|
|
if (ch->digiext.digi_flags & DIGI_AIXON)
|
1775 |
|
|
res |= IAIXON;
|
1776 |
|
|
return res;
|
1777 |
|
|
}
|
1778 |
|
|
|
1779 |
|
|
static unsigned termios2digi_c(struct channel *ch, unsigned cflag)
|
1780 |
|
|
{
|
1781 |
|
|
unsigned res = 0;
|
1782 |
|
|
if (cflag & CBAUDEX) {
|
1783 |
|
|
ch->digiext.digi_flags |= DIGI_FAST;
|
1784 |
|
|
/*
|
1785 |
|
|
* HUPCL bit is used by FEP to indicate fast baud table is to
|
1786 |
|
|
* be used.
|
1787 |
|
|
*/
|
1788 |
|
|
res |= FEP_HUPCL;
|
1789 |
|
|
} else
|
1790 |
|
|
ch->digiext.digi_flags &= ~DIGI_FAST;
|
1791 |
|
|
/*
|
1792 |
|
|
* CBAUD has bit position 0x1000 set these days to indicate Linux
|
1793 |
|
|
* baud rate remap. Digi hardware can't handle the bit assignment.
|
1794 |
|
|
* (We use a different bit assignment for high speed.). Clear this
|
1795 |
|
|
* bit out.
|
1796 |
|
|
*/
|
1797 |
|
|
res |= cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE);
|
1798 |
|
|
/*
|
1799 |
|
|
* This gets a little confusing. The Digi cards have their own
|
1800 |
|
|
* representation of c_cflags controling baud rate. For the most part
|
1801 |
|
|
* this is identical to the Linux implementation. However; Digi
|
1802 |
|
|
* supports one rate (76800) that Linux doesn't. This means that the
|
1803 |
|
|
* c_cflag entry that would normally mean 76800 for Digi actually means
|
1804 |
|
|
* 115200 under Linux. Without the below mapping, a stty 115200 would
|
1805 |
|
|
* only drive the board at 76800. Since the rate 230400 is also found
|
1806 |
|
|
* after 76800, the same problem afflicts us when we choose a rate of
|
1807 |
|
|
* 230400. Without the below modificiation stty 230400 would actually
|
1808 |
|
|
* give us 115200.
|
1809 |
|
|
*
|
1810 |
|
|
* There are two additional differences. The Linux value for CLOCAL
|
1811 |
|
|
* (0x800; 0004000) has no meaning to the Digi hardware. Also in later
|
1812 |
|
|
* releases of Linux; the CBAUD define has CBAUDEX (0x1000; 0010000)
|
1813 |
|
|
* ored into it (CBAUD = 0x100f as opposed to 0xf). CBAUDEX should be
|
1814 |
|
|
* checked for a screened out prior to termios2digi_c returning. Since
|
1815 |
|
|
* CLOCAL isn't used by the board this can be ignored as long as the
|
1816 |
|
|
* returned value is used only by Digi hardware.
|
1817 |
|
|
*/
|
1818 |
|
|
if (cflag & CBAUDEX) {
|
1819 |
|
|
/*
|
1820 |
|
|
* The below code is trying to guarantee that only baud rates
|
1821 |
|
|
* 115200 and 230400 are remapped. We use exclusive or because
|
1822 |
|
|
* the various baud rates share common bit positions and
|
1823 |
|
|
* therefore can't be tested for easily.
|
1824 |
|
|
*/
|
1825 |
|
|
if ((!((cflag & 0x7) ^ (B115200 & ~CBAUDEX))) ||
|
1826 |
|
|
(!((cflag & 0x7) ^ (B230400 & ~CBAUDEX))))
|
1827 |
|
|
res += 1;
|
1828 |
|
|
}
|
1829 |
|
|
return res;
|
1830 |
|
|
}
|
1831 |
|
|
|
1832 |
|
|
/* Caller must hold the locks */
|
1833 |
|
|
static void epcaparam(struct tty_struct *tty, struct channel *ch)
|
1834 |
|
|
{
|
1835 |
|
|
unsigned int cmdHead;
|
1836 |
|
|
struct ktermios *ts;
|
1837 |
|
|
struct board_chan __iomem *bc;
|
1838 |
|
|
unsigned mval, hflow, cflag, iflag;
|
1839 |
|
|
|
1840 |
|
|
bc = ch->brdchan;
|
1841 |
|
|
epcaassert(bc !=0, "bc out of range");
|
1842 |
|
|
|
1843 |
|
|
assertgwinon(ch);
|
1844 |
|
|
ts = tty->termios;
|
1845 |
|
|
if ((ts->c_cflag & CBAUD) == 0) { /* Begin CBAUD detected */
|
1846 |
|
|
cmdHead = readw(&bc->rin);
|
1847 |
|
|
writew(cmdHead, &bc->rout);
|
1848 |
|
|
cmdHead = readw(&bc->tin);
|
1849 |
|
|
/* Changing baud in mid-stream transmission can be wonderful */
|
1850 |
|
|
/*
|
1851 |
|
|
* Flush current transmit buffer by setting cmdTail pointer
|
1852 |
|
|
* (tout) to cmdHead pointer (tin). Hopefully the transmit
|
1853 |
|
|
* buffer is empty.
|
1854 |
|
|
*/
|
1855 |
|
|
fepcmd(ch, STOUT, (unsigned) cmdHead, 0, 0, 0);
|
1856 |
|
|
mval = 0;
|
1857 |
|
|
} else { /* Begin CBAUD not detected */
|
1858 |
|
|
/*
|
1859 |
|
|
* c_cflags have changed but that change had nothing to do with
|
1860 |
|
|
* BAUD. Propagate the change to the card.
|
1861 |
|
|
*/
|
1862 |
|
|
cflag = termios2digi_c(ch, ts->c_cflag);
|
1863 |
|
|
if (cflag != ch->fepcflag) {
|
1864 |
|
|
ch->fepcflag = cflag;
|
1865 |
|
|
/* Set baud rate, char size, stop bits, parity */
|
1866 |
|
|
fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0);
|
1867 |
|
|
}
|
1868 |
|
|
/*
|
1869 |
|
|
* If the user has not forced CLOCAL and if the device is not a
|
1870 |
|
|
* CALLOUT device (Which is always CLOCAL) we set flags such
|
1871 |
|
|
* that the driver will wait on carrier detect.
|
1872 |
|
|
*/
|
1873 |
|
|
if (ts->c_cflag & CLOCAL)
|
1874 |
|
|
ch->asyncflags &= ~ASYNC_CHECK_CD;
|
1875 |
|
|
else
|
1876 |
|
|
ch->asyncflags |= ASYNC_CHECK_CD;
|
1877 |
|
|
mval = ch->m_dtr | ch->m_rts;
|
1878 |
|
|
} /* End CBAUD not detected */
|
1879 |
|
|
iflag = termios2digi_i(ch, ts->c_iflag);
|
1880 |
|
|
/* Check input mode flags */
|
1881 |
|
|
if (iflag != ch->fepiflag) {
|
1882 |
|
|
ch->fepiflag = iflag;
|
1883 |
|
|
/*
|
1884 |
|
|
* Command sets channels iflag structure on the board. Such
|
1885 |
|
|
* things as input soft flow control, handling of parity
|
1886 |
|
|
* errors, and break handling are all set here.
|
1887 |
|
|
*/
|
1888 |
|
|
/* break handling, parity handling, input stripping, flow control chars */
|
1889 |
|
|
fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0);
|
1890 |
|
|
}
|
1891 |
|
|
/*
|
1892 |
|
|
* Set the board mint value for this channel. This will cause hardware
|
1893 |
|
|
* events to be generated each time the DCD signal (Described in mint)
|
1894 |
|
|
* changes.
|
1895 |
|
|
*/
|
1896 |
|
|
writeb(ch->dcd, &bc->mint);
|
1897 |
|
|
if ((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD))
|
1898 |
|
|
if (ch->digiext.digi_flags & DIGI_FORCEDCD)
|
1899 |
|
|
writeb(0, &bc->mint);
|
1900 |
|
|
ch->imodem = readb(&bc->mstat);
|
1901 |
|
|
hflow = termios2digi_h(ch, ts->c_cflag);
|
1902 |
|
|
if (hflow != ch->hflow) {
|
1903 |
|
|
ch->hflow = hflow;
|
1904 |
|
|
/*
|
1905 |
|
|
* Hard flow control has been selected but the board is not
|
1906 |
|
|
* using it. Activate hard flow control now.
|
1907 |
|
|
*/
|
1908 |
|
|
fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1);
|
1909 |
|
|
}
|
1910 |
|
|
mval ^= ch->modemfake & (mval ^ ch->modem);
|
1911 |
|
|
|
1912 |
|
|
if (ch->omodem ^ mval) {
|
1913 |
|
|
ch->omodem = mval;
|
1914 |
|
|
/*
|
1915 |
|
|
* The below command sets the DTR and RTS mstat structure. If
|
1916 |
|
|
* hard flow control is NOT active these changes will drive the
|
1917 |
|
|
* output of the actual DTR and RTS lines. If hard flow control
|
1918 |
|
|
* is active, the changes will be saved in the mstat structure
|
1919 |
|
|
* and only asserted when hard flow control is turned off.
|
1920 |
|
|
*/
|
1921 |
|
|
|
1922 |
|
|
/* First reset DTR & RTS; then set them */
|
1923 |
|
|
fepcmd(ch, SETMODEM, 0, ((ch->m_dtr)|(ch->m_rts)), 0, 1);
|
1924 |
|
|
fepcmd(ch, SETMODEM, mval, 0, 0, 1);
|
1925 |
|
|
}
|
1926 |
|
|
if (ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) {
|
1927 |
|
|
ch->fepstartc = ch->startc;
|
1928 |
|
|
ch->fepstopc = ch->stopc;
|
1929 |
|
|
/*
|
1930 |
|
|
* The XON / XOFF characters have changed; propagate these
|
1931 |
|
|
* changes to the card.
|
1932 |
|
|
*/
|
1933 |
|
|
fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1);
|
1934 |
|
|
}
|
1935 |
|
|
if (ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) {
|
1936 |
|
|
ch->fepstartca = ch->startca;
|
1937 |
|
|
ch->fepstopca = ch->stopca;
|
1938 |
|
|
/*
|
1939 |
|
|
* Similar to the above, this time the auxilarly XON / XOFF
|
1940 |
|
|
* characters have changed; propagate these changes to the card.
|
1941 |
|
|
*/
|
1942 |
|
|
fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1);
|
1943 |
|
|
}
|
1944 |
|
|
}
|
1945 |
|
|
|
1946 |
|
|
/* Caller holds lock */
|
1947 |
|
|
static void receive_data(struct channel *ch)
|
1948 |
|
|
{
|
1949 |
|
|
unchar *rptr;
|
1950 |
|
|
struct ktermios *ts = NULL;
|
1951 |
|
|
struct tty_struct *tty;
|
1952 |
|
|
struct board_chan __iomem *bc;
|
1953 |
|
|
int dataToRead, wrapgap, bytesAvailable;
|
1954 |
|
|
unsigned int tail, head;
|
1955 |
|
|
unsigned int wrapmask;
|
1956 |
|
|
|
1957 |
|
|
/*
|
1958 |
|
|
* This routine is called by doint when a receive data event has taken
|
1959 |
|
|
* place.
|
1960 |
|
|
*/
|
1961 |
|
|
globalwinon(ch);
|
1962 |
|
|
if (ch->statusflags & RXSTOPPED)
|
1963 |
|
|
return;
|
1964 |
|
|
tty = ch->tty;
|
1965 |
|
|
if (tty)
|
1966 |
|
|
ts = tty->termios;
|
1967 |
|
|
bc = ch->brdchan;
|
1968 |
|
|
BUG_ON(!bc);
|
1969 |
|
|
wrapmask = ch->rxbufsize - 1;
|
1970 |
|
|
|
1971 |
|
|
/*
|
1972 |
|
|
* Get the head and tail pointers to the receiver queue. Wrap the head
|
1973 |
|
|
* pointer if it has reached the end of the buffer.
|
1974 |
|
|
*/
|
1975 |
|
|
head = readw(&bc->rin);
|
1976 |
|
|
head &= wrapmask;
|
1977 |
|
|
tail = readw(&bc->rout) & wrapmask;
|
1978 |
|
|
|
1979 |
|
|
bytesAvailable = (head - tail) & wrapmask;
|
1980 |
|
|
if (bytesAvailable == 0)
|
1981 |
|
|
return;
|
1982 |
|
|
|
1983 |
|
|
/* If CREAD bit is off or device not open, set TX tail to head */
|
1984 |
|
|
if (!tty || !ts || !(ts->c_cflag & CREAD)) {
|
1985 |
|
|
writew(head, &bc->rout);
|
1986 |
|
|
return;
|
1987 |
|
|
}
|
1988 |
|
|
|
1989 |
|
|
if (tty_buffer_request_room(tty, bytesAvailable + 1) == 0)
|
1990 |
|
|
return;
|
1991 |
|
|
|
1992 |
|
|
if (readb(&bc->orun)) {
|
1993 |
|
|
writeb(0, &bc->orun);
|
1994 |
|
|
printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n",tty->name);
|
1995 |
|
|
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
|
1996 |
|
|
}
|
1997 |
|
|
rxwinon(ch);
|
1998 |
|
|
while (bytesAvailable > 0) { /* Begin while there is data on the card */
|
1999 |
|
|
wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail;
|
2000 |
|
|
/*
|
2001 |
|
|
* Even if head has wrapped around only report the amount of
|
2002 |
|
|
* data to be equal to the size - tail. Remember memcpy can't
|
2003 |
|
|
* automaticly wrap around the receive buffer.
|
2004 |
|
|
*/
|
2005 |
|
|
dataToRead = (wrapgap < bytesAvailable) ? wrapgap : bytesAvailable;
|
2006 |
|
|
/* Make sure we don't overflow the buffer */
|
2007 |
|
|
dataToRead = tty_prepare_flip_string(tty, &rptr, dataToRead);
|
2008 |
|
|
if (dataToRead == 0)
|
2009 |
|
|
break;
|
2010 |
|
|
/*
|
2011 |
|
|
* Move data read from our card into the line disciplines
|
2012 |
|
|
* buffer for translation if necessary.
|
2013 |
|
|
*/
|
2014 |
|
|
memcpy_fromio(rptr, ch->rxptr + tail, dataToRead);
|
2015 |
|
|
tail = (tail + dataToRead) & wrapmask;
|
2016 |
|
|
bytesAvailable -= dataToRead;
|
2017 |
|
|
} /* End while there is data on the card */
|
2018 |
|
|
globalwinon(ch);
|
2019 |
|
|
writew(tail, &bc->rout);
|
2020 |
|
|
/* Must be called with global data */
|
2021 |
|
|
tty_schedule_flip(ch->tty);
|
2022 |
|
|
}
|
2023 |
|
|
|
2024 |
|
|
static int info_ioctl(struct tty_struct *tty, struct file *file,
|
2025 |
|
|
unsigned int cmd, unsigned long arg)
|
2026 |
|
|
{
|
2027 |
|
|
switch (cmd) {
|
2028 |
|
|
case DIGI_GETINFO:
|
2029 |
|
|
{
|
2030 |
|
|
struct digi_info di;
|
2031 |
|
|
int brd;
|
2032 |
|
|
|
2033 |
|
|
if (get_user(brd, (unsigned int __user *)arg))
|
2034 |
|
|
return -EFAULT;
|
2035 |
|
|
if (brd < 0 || brd >= num_cards || num_cards == 0)
|
2036 |
|
|
return -ENODEV;
|
2037 |
|
|
|
2038 |
|
|
memset(&di, 0, sizeof(di));
|
2039 |
|
|
|
2040 |
|
|
di.board = brd;
|
2041 |
|
|
di.status = boards[brd].status;
|
2042 |
|
|
di.type = boards[brd].type ;
|
2043 |
|
|
di.numports = boards[brd].numports ;
|
2044 |
|
|
/* Legacy fixups - just move along nothing to see */
|
2045 |
|
|
di.port = (unsigned char *)boards[brd].port ;
|
2046 |
|
|
di.membase = (unsigned char *)boards[brd].membase ;
|
2047 |
|
|
|
2048 |
|
|
if (copy_to_user((void __user *)arg, &di, sizeof(di)))
|
2049 |
|
|
return -EFAULT;
|
2050 |
|
|
break;
|
2051 |
|
|
|
2052 |
|
|
}
|
2053 |
|
|
|
2054 |
|
|
case DIGI_POLLER:
|
2055 |
|
|
{
|
2056 |
|
|
int brd = arg & 0xff000000 >> 16;
|
2057 |
|
|
unsigned char state = arg & 0xff;
|
2058 |
|
|
|
2059 |
|
|
if (brd < 0 || brd >= num_cards) {
|
2060 |
|
|
printk(KERN_ERR "epca: DIGI POLLER : brd not valid!\n");
|
2061 |
|
|
return -ENODEV;
|
2062 |
|
|
}
|
2063 |
|
|
digi_poller_inhibited = state;
|
2064 |
|
|
break;
|
2065 |
|
|
}
|
2066 |
|
|
|
2067 |
|
|
case DIGI_INIT:
|
2068 |
|
|
{
|
2069 |
|
|
/*
|
2070 |
|
|
* This call is made by the apps to complete the
|
2071 |
|
|
* initilization of the board(s). This routine is
|
2072 |
|
|
* responsible for setting the card to its initial
|
2073 |
|
|
* state and setting the drivers control fields to the
|
2074 |
|
|
* sutianle settings for the card in question.
|
2075 |
|
|
*/
|
2076 |
|
|
int crd;
|
2077 |
|
|
for (crd = 0; crd < num_cards; crd++)
|
2078 |
|
|
post_fep_init(crd);
|
2079 |
|
|
break;
|
2080 |
|
|
}
|
2081 |
|
|
default:
|
2082 |
|
|
return -ENOTTY;
|
2083 |
|
|
}
|
2084 |
|
|
return 0;
|
2085 |
|
|
}
|
2086 |
|
|
|
2087 |
|
|
static int pc_tiocmget(struct tty_struct *tty, struct file *file)
|
2088 |
|
|
{
|
2089 |
|
|
struct channel *ch = (struct channel *) tty->driver_data;
|
2090 |
|
|
struct board_chan __iomem *bc;
|
2091 |
|
|
unsigned int mstat, mflag = 0;
|
2092 |
|
|
unsigned long flags;
|
2093 |
|
|
|
2094 |
|
|
if (ch)
|
2095 |
|
|
bc = ch->brdchan;
|
2096 |
|
|
else
|
2097 |
|
|
return -EINVAL;
|
2098 |
|
|
|
2099 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2100 |
|
|
globalwinon(ch);
|
2101 |
|
|
mstat = readb(&bc->mstat);
|
2102 |
|
|
memoff(ch);
|
2103 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2104 |
|
|
|
2105 |
|
|
if (mstat & ch->m_dtr)
|
2106 |
|
|
mflag |= TIOCM_DTR;
|
2107 |
|
|
if (mstat & ch->m_rts)
|
2108 |
|
|
mflag |= TIOCM_RTS;
|
2109 |
|
|
if (mstat & ch->m_cts)
|
2110 |
|
|
mflag |= TIOCM_CTS;
|
2111 |
|
|
if (mstat & ch->dsr)
|
2112 |
|
|
mflag |= TIOCM_DSR;
|
2113 |
|
|
if (mstat & ch->m_ri)
|
2114 |
|
|
mflag |= TIOCM_RI;
|
2115 |
|
|
if (mstat & ch->dcd)
|
2116 |
|
|
mflag |= TIOCM_CD;
|
2117 |
|
|
return mflag;
|
2118 |
|
|
}
|
2119 |
|
|
|
2120 |
|
|
static int pc_tiocmset(struct tty_struct *tty, struct file *file,
|
2121 |
|
|
unsigned int set, unsigned int clear)
|
2122 |
|
|
{
|
2123 |
|
|
struct channel *ch = (struct channel *) tty->driver_data;
|
2124 |
|
|
unsigned long flags;
|
2125 |
|
|
|
2126 |
|
|
if (!ch)
|
2127 |
|
|
return -EINVAL;
|
2128 |
|
|
|
2129 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2130 |
|
|
/*
|
2131 |
|
|
* I think this modemfake stuff is broken. It doesn't correctly reflect
|
2132 |
|
|
* the behaviour desired by the TIOCM* ioctls. Therefore this is
|
2133 |
|
|
* probably broken.
|
2134 |
|
|
*/
|
2135 |
|
|
if (set & TIOCM_RTS) {
|
2136 |
|
|
ch->modemfake |= ch->m_rts;
|
2137 |
|
|
ch->modem |= ch->m_rts;
|
2138 |
|
|
}
|
2139 |
|
|
if (set & TIOCM_DTR) {
|
2140 |
|
|
ch->modemfake |= ch->m_dtr;
|
2141 |
|
|
ch->modem |= ch->m_dtr;
|
2142 |
|
|
}
|
2143 |
|
|
if (clear & TIOCM_RTS) {
|
2144 |
|
|
ch->modemfake |= ch->m_rts;
|
2145 |
|
|
ch->modem &= ~ch->m_rts;
|
2146 |
|
|
}
|
2147 |
|
|
if (clear & TIOCM_DTR) {
|
2148 |
|
|
ch->modemfake |= ch->m_dtr;
|
2149 |
|
|
ch->modem &= ~ch->m_dtr;
|
2150 |
|
|
}
|
2151 |
|
|
globalwinon(ch);
|
2152 |
|
|
/*
|
2153 |
|
|
* The below routine generally sets up parity, baud, flow control
|
2154 |
|
|
* issues, etc.... It effect both control flags and input flags.
|
2155 |
|
|
*/
|
2156 |
|
|
epcaparam(tty,ch);
|
2157 |
|
|
memoff(ch);
|
2158 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2159 |
|
|
return 0;
|
2160 |
|
|
}
|
2161 |
|
|
|
2162 |
|
|
static int pc_ioctl(struct tty_struct *tty, struct file * file,
|
2163 |
|
|
unsigned int cmd, unsigned long arg)
|
2164 |
|
|
{
|
2165 |
|
|
digiflow_t dflow;
|
2166 |
|
|
int retval;
|
2167 |
|
|
unsigned long flags;
|
2168 |
|
|
unsigned int mflag, mstat;
|
2169 |
|
|
unsigned char startc, stopc;
|
2170 |
|
|
struct board_chan __iomem *bc;
|
2171 |
|
|
struct channel *ch = (struct channel *) tty->driver_data;
|
2172 |
|
|
void __user *argp = (void __user *)arg;
|
2173 |
|
|
|
2174 |
|
|
if (ch)
|
2175 |
|
|
bc = ch->brdchan;
|
2176 |
|
|
else
|
2177 |
|
|
return -EINVAL;
|
2178 |
|
|
|
2179 |
|
|
/*
|
2180 |
|
|
* For POSIX compliance we need to add more ioctls. See tty_ioctl.c in
|
2181 |
|
|
* /usr/src/linux/drivers/char for a good example. In particular think
|
2182 |
|
|
* about adding TCSETAF, TCSETAW, TCSETA, TCSETSF, TCSETSW, TCSETS.
|
2183 |
|
|
*/
|
2184 |
|
|
switch (cmd) {
|
2185 |
|
|
case TCSBRK: /* SVID version: non-zero arg --> no break */
|
2186 |
|
|
retval = tty_check_change(tty);
|
2187 |
|
|
if (retval)
|
2188 |
|
|
return retval;
|
2189 |
|
|
/* Setup an event to indicate when the transmit buffer empties */
|
2190 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2191 |
|
|
setup_empty_event(tty,ch);
|
2192 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2193 |
|
|
tty_wait_until_sent(tty, 0);
|
2194 |
|
|
if (!arg)
|
2195 |
|
|
digi_send_break(ch, HZ / 4); /* 1/4 second */
|
2196 |
|
|
return 0;
|
2197 |
|
|
case TCSBRKP: /* support for POSIX tcsendbreak() */
|
2198 |
|
|
retval = tty_check_change(tty);
|
2199 |
|
|
if (retval)
|
2200 |
|
|
return retval;
|
2201 |
|
|
|
2202 |
|
|
/* Setup an event to indicate when the transmit buffer empties */
|
2203 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2204 |
|
|
setup_empty_event(tty,ch);
|
2205 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2206 |
|
|
tty_wait_until_sent(tty, 0);
|
2207 |
|
|
digi_send_break(ch, arg ? arg*(HZ/10) : HZ/4);
|
2208 |
|
|
return 0;
|
2209 |
|
|
case TIOCGSOFTCAR:
|
2210 |
|
|
if (put_user(C_CLOCAL(tty)?1:0, (unsigned long __user *)arg))
|
2211 |
|
|
return -EFAULT;
|
2212 |
|
|
return 0;
|
2213 |
|
|
case TIOCSSOFTCAR:
|
2214 |
|
|
{
|
2215 |
|
|
unsigned int value;
|
2216 |
|
|
|
2217 |
|
|
if (get_user(value, (unsigned __user *)argp))
|
2218 |
|
|
return -EFAULT;
|
2219 |
|
|
tty->termios->c_cflag =
|
2220 |
|
|
((tty->termios->c_cflag & ~CLOCAL) |
|
2221 |
|
|
(value ? CLOCAL : 0));
|
2222 |
|
|
return 0;
|
2223 |
|
|
}
|
2224 |
|
|
case TIOCMODG:
|
2225 |
|
|
mflag = pc_tiocmget(tty, file);
|
2226 |
|
|
if (put_user(mflag, (unsigned long __user *)argp))
|
2227 |
|
|
return -EFAULT;
|
2228 |
|
|
break;
|
2229 |
|
|
case TIOCMODS:
|
2230 |
|
|
if (get_user(mstat, (unsigned __user *)argp))
|
2231 |
|
|
return -EFAULT;
|
2232 |
|
|
return pc_tiocmset(tty, file, mstat, ~mstat);
|
2233 |
|
|
case TIOCSDTR:
|
2234 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2235 |
|
|
ch->omodem |= ch->m_dtr;
|
2236 |
|
|
globalwinon(ch);
|
2237 |
|
|
fepcmd(ch, SETMODEM, ch->m_dtr, 0, 10, 1);
|
2238 |
|
|
memoff(ch);
|
2239 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2240 |
|
|
break;
|
2241 |
|
|
|
2242 |
|
|
case TIOCCDTR:
|
2243 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2244 |
|
|
ch->omodem &= ~ch->m_dtr;
|
2245 |
|
|
globalwinon(ch);
|
2246 |
|
|
fepcmd(ch, SETMODEM, 0, ch->m_dtr, 10, 1);
|
2247 |
|
|
memoff(ch);
|
2248 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2249 |
|
|
break;
|
2250 |
|
|
case DIGI_GETA:
|
2251 |
|
|
if (copy_to_user(argp, &ch->digiext, sizeof(digi_t)))
|
2252 |
|
|
return -EFAULT;
|
2253 |
|
|
break;
|
2254 |
|
|
case DIGI_SETAW:
|
2255 |
|
|
case DIGI_SETAF:
|
2256 |
|
|
if (cmd == DIGI_SETAW) {
|
2257 |
|
|
/* Setup an event to indicate when the transmit buffer empties */
|
2258 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2259 |
|
|
setup_empty_event(tty,ch);
|
2260 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2261 |
|
|
tty_wait_until_sent(tty, 0);
|
2262 |
|
|
} else {
|
2263 |
|
|
/* ldisc lock already held in ioctl */
|
2264 |
|
|
if (tty->ldisc.flush_buffer)
|
2265 |
|
|
tty->ldisc.flush_buffer(tty);
|
2266 |
|
|
}
|
2267 |
|
|
/* Fall Thru */
|
2268 |
|
|
case DIGI_SETA:
|
2269 |
|
|
if (copy_from_user(&ch->digiext, argp, sizeof(digi_t)))
|
2270 |
|
|
return -EFAULT;
|
2271 |
|
|
|
2272 |
|
|
if (ch->digiext.digi_flags & DIGI_ALTPIN) {
|
2273 |
|
|
ch->dcd = ch->m_dsr;
|
2274 |
|
|
ch->dsr = ch->m_dcd;
|
2275 |
|
|
} else {
|
2276 |
|
|
ch->dcd = ch->m_dcd;
|
2277 |
|
|
ch->dsr = ch->m_dsr;
|
2278 |
|
|
}
|
2279 |
|
|
|
2280 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2281 |
|
|
globalwinon(ch);
|
2282 |
|
|
|
2283 |
|
|
/*
|
2284 |
|
|
* The below routine generally sets up parity, baud, flow
|
2285 |
|
|
* control issues, etc.... It effect both control flags and
|
2286 |
|
|
* input flags.
|
2287 |
|
|
*/
|
2288 |
|
|
epcaparam(tty,ch);
|
2289 |
|
|
memoff(ch);
|
2290 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2291 |
|
|
break;
|
2292 |
|
|
|
2293 |
|
|
case DIGI_GETFLOW:
|
2294 |
|
|
case DIGI_GETAFLOW:
|
2295 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2296 |
|
|
globalwinon(ch);
|
2297 |
|
|
if (cmd == DIGI_GETFLOW) {
|
2298 |
|
|
dflow.startc = readb(&bc->startc);
|
2299 |
|
|
dflow.stopc = readb(&bc->stopc);
|
2300 |
|
|
} else {
|
2301 |
|
|
dflow.startc = readb(&bc->startca);
|
2302 |
|
|
dflow.stopc = readb(&bc->stopca);
|
2303 |
|
|
}
|
2304 |
|
|
memoff(ch);
|
2305 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2306 |
|
|
|
2307 |
|
|
if (copy_to_user(argp, &dflow, sizeof(dflow)))
|
2308 |
|
|
return -EFAULT;
|
2309 |
|
|
break;
|
2310 |
|
|
|
2311 |
|
|
case DIGI_SETAFLOW:
|
2312 |
|
|
case DIGI_SETFLOW:
|
2313 |
|
|
if (cmd == DIGI_SETFLOW) {
|
2314 |
|
|
startc = ch->startc;
|
2315 |
|
|
stopc = ch->stopc;
|
2316 |
|
|
} else {
|
2317 |
|
|
startc = ch->startca;
|
2318 |
|
|
stopc = ch->stopca;
|
2319 |
|
|
}
|
2320 |
|
|
|
2321 |
|
|
if (copy_from_user(&dflow, argp, sizeof(dflow)))
|
2322 |
|
|
return -EFAULT;
|
2323 |
|
|
|
2324 |
|
|
if (dflow.startc != startc || dflow.stopc != stopc) { /* Begin if setflow toggled */
|
2325 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2326 |
|
|
globalwinon(ch);
|
2327 |
|
|
|
2328 |
|
|
if (cmd == DIGI_SETFLOW) {
|
2329 |
|
|
ch->fepstartc = ch->startc = dflow.startc;
|
2330 |
|
|
ch->fepstopc = ch->stopc = dflow.stopc;
|
2331 |
|
|
fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1);
|
2332 |
|
|
} else {
|
2333 |
|
|
ch->fepstartca = ch->startca = dflow.startc;
|
2334 |
|
|
ch->fepstopca = ch->stopca = dflow.stopc;
|
2335 |
|
|
fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1);
|
2336 |
|
|
}
|
2337 |
|
|
|
2338 |
|
|
if (ch->statusflags & TXSTOPPED)
|
2339 |
|
|
pc_start(tty);
|
2340 |
|
|
|
2341 |
|
|
memoff(ch);
|
2342 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2343 |
|
|
} /* End if setflow toggled */
|
2344 |
|
|
break;
|
2345 |
|
|
default:
|
2346 |
|
|
return -ENOIOCTLCMD;
|
2347 |
|
|
}
|
2348 |
|
|
return 0;
|
2349 |
|
|
}
|
2350 |
|
|
|
2351 |
|
|
static void pc_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
|
2352 |
|
|
{
|
2353 |
|
|
struct channel *ch;
|
2354 |
|
|
unsigned long flags;
|
2355 |
|
|
/*
|
2356 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
2357 |
|
|
* valid. This serves as a sanity check.
|
2358 |
|
|
*/
|
2359 |
|
|
if ((ch = verifyChannel(tty)) != NULL) { /* Begin if channel valid */
|
2360 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2361 |
|
|
globalwinon(ch);
|
2362 |
|
|
epcaparam(tty, ch);
|
2363 |
|
|
memoff(ch);
|
2364 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2365 |
|
|
|
2366 |
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
2367 |
|
|
((tty->termios->c_cflag & CRTSCTS) == 0))
|
2368 |
|
|
tty->hw_stopped = 0;
|
2369 |
|
|
|
2370 |
|
|
if (!(old_termios->c_cflag & CLOCAL) &&
|
2371 |
|
|
(tty->termios->c_cflag & CLOCAL))
|
2372 |
|
|
wake_up_interruptible(&ch->open_wait);
|
2373 |
|
|
|
2374 |
|
|
} /* End if channel valid */
|
2375 |
|
|
}
|
2376 |
|
|
|
2377 |
|
|
static void do_softint(struct work_struct *work)
|
2378 |
|
|
{
|
2379 |
|
|
struct channel *ch = container_of(work, struct channel, tqueue);
|
2380 |
|
|
/* Called in response to a modem change event */
|
2381 |
|
|
if (ch && ch->magic == EPCA_MAGIC) {
|
2382 |
|
|
struct tty_struct *tty = ch->tty;
|
2383 |
|
|
|
2384 |
|
|
if (tty && tty->driver_data) {
|
2385 |
|
|
if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) {
|
2386 |
|
|
tty_hangup(tty); /* FIXME: module removal race here - AKPM */
|
2387 |
|
|
wake_up_interruptible(&ch->open_wait);
|
2388 |
|
|
ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
|
2389 |
|
|
}
|
2390 |
|
|
}
|
2391 |
|
|
}
|
2392 |
|
|
}
|
2393 |
|
|
|
2394 |
|
|
/*
|
2395 |
|
|
* pc_stop and pc_start provide software flow control to the routine and the
|
2396 |
|
|
* pc_ioctl routine.
|
2397 |
|
|
*/
|
2398 |
|
|
static void pc_stop(struct tty_struct *tty)
|
2399 |
|
|
{
|
2400 |
|
|
struct channel *ch;
|
2401 |
|
|
unsigned long flags;
|
2402 |
|
|
/*
|
2403 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
2404 |
|
|
* valid. This serves as a sanity check.
|
2405 |
|
|
*/
|
2406 |
|
|
if ((ch = verifyChannel(tty)) != NULL) {
|
2407 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2408 |
|
|
if ((ch->statusflags & TXSTOPPED) == 0) { /* Begin if transmit stop requested */
|
2409 |
|
|
globalwinon(ch);
|
2410 |
|
|
/* STOP transmitting now !! */
|
2411 |
|
|
fepcmd(ch, PAUSETX, 0, 0, 0, 0);
|
2412 |
|
|
ch->statusflags |= TXSTOPPED;
|
2413 |
|
|
memoff(ch);
|
2414 |
|
|
} /* End if transmit stop requested */
|
2415 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2416 |
|
|
}
|
2417 |
|
|
}
|
2418 |
|
|
|
2419 |
|
|
static void pc_start(struct tty_struct *tty)
|
2420 |
|
|
{
|
2421 |
|
|
struct channel *ch;
|
2422 |
|
|
/*
|
2423 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
2424 |
|
|
* valid. This serves as a sanity check.
|
2425 |
|
|
*/
|
2426 |
|
|
if ((ch = verifyChannel(tty)) != NULL) {
|
2427 |
|
|
unsigned long flags;
|
2428 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2429 |
|
|
/* Just in case output was resumed because of a change in Digi-flow */
|
2430 |
|
|
if (ch->statusflags & TXSTOPPED) { /* Begin transmit resume requested */
|
2431 |
|
|
struct board_chan __iomem *bc;
|
2432 |
|
|
globalwinon(ch);
|
2433 |
|
|
bc = ch->brdchan;
|
2434 |
|
|
if (ch->statusflags & LOWWAIT)
|
2435 |
|
|
writeb(1, &bc->ilow);
|
2436 |
|
|
/* Okay, you can start transmitting again... */
|
2437 |
|
|
fepcmd(ch, RESUMETX, 0, 0, 0, 0);
|
2438 |
|
|
ch->statusflags &= ~TXSTOPPED;
|
2439 |
|
|
memoff(ch);
|
2440 |
|
|
} /* End transmit resume requested */
|
2441 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2442 |
|
|
}
|
2443 |
|
|
}
|
2444 |
|
|
|
2445 |
|
|
/*
|
2446 |
|
|
* The below routines pc_throttle and pc_unthrottle are used to slow (And
|
2447 |
|
|
* resume) the receipt of data into the kernels receive buffers. The exact
|
2448 |
|
|
* occurrence of this depends on the size of the kernels receive buffer and
|
2449 |
|
|
* what the 'watermarks' are set to for that buffer. See the n_ttys.c file for
|
2450 |
|
|
* more details.
|
2451 |
|
|
*/
|
2452 |
|
|
static void pc_throttle(struct tty_struct *tty)
|
2453 |
|
|
{
|
2454 |
|
|
struct channel *ch;
|
2455 |
|
|
unsigned long flags;
|
2456 |
|
|
/*
|
2457 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
2458 |
|
|
* valid. This serves as a sanity check.
|
2459 |
|
|
*/
|
2460 |
|
|
if ((ch = verifyChannel(tty)) != NULL) {
|
2461 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2462 |
|
|
if ((ch->statusflags & RXSTOPPED) == 0) {
|
2463 |
|
|
globalwinon(ch);
|
2464 |
|
|
fepcmd(ch, PAUSERX, 0, 0, 0, 0);
|
2465 |
|
|
ch->statusflags |= RXSTOPPED;
|
2466 |
|
|
memoff(ch);
|
2467 |
|
|
}
|
2468 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2469 |
|
|
}
|
2470 |
|
|
}
|
2471 |
|
|
|
2472 |
|
|
static void pc_unthrottle(struct tty_struct *tty)
|
2473 |
|
|
{
|
2474 |
|
|
struct channel *ch;
|
2475 |
|
|
unsigned long flags;
|
2476 |
|
|
/*
|
2477 |
|
|
* verifyChannel returns the channel from the tty struct if it is
|
2478 |
|
|
* valid. This serves as a sanity check.
|
2479 |
|
|
*/
|
2480 |
|
|
if ((ch = verifyChannel(tty)) != NULL) {
|
2481 |
|
|
/* Just in case output was resumed because of a change in Digi-flow */
|
2482 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2483 |
|
|
if (ch->statusflags & RXSTOPPED) {
|
2484 |
|
|
globalwinon(ch);
|
2485 |
|
|
fepcmd(ch, RESUMERX, 0, 0, 0, 0);
|
2486 |
|
|
ch->statusflags &= ~RXSTOPPED;
|
2487 |
|
|
memoff(ch);
|
2488 |
|
|
}
|
2489 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2490 |
|
|
}
|
2491 |
|
|
}
|
2492 |
|
|
|
2493 |
|
|
void digi_send_break(struct channel *ch, int msec)
|
2494 |
|
|
{
|
2495 |
|
|
unsigned long flags;
|
2496 |
|
|
|
2497 |
|
|
spin_lock_irqsave(&epca_lock, flags);
|
2498 |
|
|
globalwinon(ch);
|
2499 |
|
|
/*
|
2500 |
|
|
* Maybe I should send an infinite break here, schedule() for msec
|
2501 |
|
|
* amount of time, and then stop the break. This way, the user can't
|
2502 |
|
|
* screw up the FEP by causing digi_send_break() to be called (i.e. via
|
2503 |
|
|
* an ioctl()) more than once in msec amount of time.
|
2504 |
|
|
* Try this for now...
|
2505 |
|
|
*/
|
2506 |
|
|
fepcmd(ch, SENDBREAK, msec, 0, 10, 0);
|
2507 |
|
|
memoff(ch);
|
2508 |
|
|
spin_unlock_irqrestore(&epca_lock, flags);
|
2509 |
|
|
}
|
2510 |
|
|
|
2511 |
|
|
/* Caller MUST hold the lock */
|
2512 |
|
|
static void setup_empty_event(struct tty_struct *tty, struct channel *ch)
|
2513 |
|
|
{
|
2514 |
|
|
struct board_chan __iomem *bc = ch->brdchan;
|
2515 |
|
|
|
2516 |
|
|
globalwinon(ch);
|
2517 |
|
|
ch->statusflags |= EMPTYWAIT;
|
2518 |
|
|
/*
|
2519 |
|
|
* When set the iempty flag request a event to be generated when the
|
2520 |
|
|
* transmit buffer is empty (If there is no BREAK in progress).
|
2521 |
|
|
*/
|
2522 |
|
|
writeb(1, &bc->iempty);
|
2523 |
|
|
memoff(ch);
|
2524 |
|
|
}
|
2525 |
|
|
|
2526 |
|
|
void epca_setup(char *str, int *ints)
|
2527 |
|
|
{
|
2528 |
|
|
struct board_info board;
|
2529 |
|
|
int index, loop, last;
|
2530 |
|
|
char *temp, *t2;
|
2531 |
|
|
unsigned len;
|
2532 |
|
|
|
2533 |
|
|
/*
|
2534 |
|
|
* If this routine looks a little strange it is because it is only
|
2535 |
|
|
* called if a LILO append command is given to boot the kernel with
|
2536 |
|
|
* parameters. In this way, we can provide the user a method of
|
2537 |
|
|
* changing his board configuration without rebuilding the kernel.
|
2538 |
|
|
*/
|
2539 |
|
|
if (!liloconfig)
|
2540 |
|
|
liloconfig = 1;
|
2541 |
|
|
|
2542 |
|
|
memset(&board, 0, sizeof(board));
|
2543 |
|
|
|
2544 |
|
|
/* Assume the data is int first, later we can change it */
|
2545 |
|
|
/* I think that array position 0 of ints holds the number of args */
|
2546 |
|
|
for (last = 0, index = 1; index <= ints[0]; index++)
|
2547 |
|
|
switch (index) { /* Begin parse switch */
|
2548 |
|
|
case 1:
|
2549 |
|
|
board.status = ints[index];
|
2550 |
|
|
/*
|
2551 |
|
|
* We check for 2 (As opposed to 1; because 2 is a flag
|
2552 |
|
|
* instructing the driver to ignore epcaconfig.) For
|
2553 |
|
|
* this reason we check for 2.
|
2554 |
|
|
*/
|
2555 |
|
|
if (board.status == 2) { /* Begin ignore epcaconfig as well as lilo cmd line */
|
2556 |
|
|
nbdevs = 0;
|
2557 |
|
|
num_cards = 0;
|
2558 |
|
|
return;
|
2559 |
|
|
} /* End ignore epcaconfig as well as lilo cmd line */
|
2560 |
|
|
|
2561 |
|
|
if (board.status > 2) {
|
2562 |
|
|
printk(KERN_ERR "epca_setup: Invalid board status 0x%x\n", board.status);
|
2563 |
|
|
invalid_lilo_config = 1;
|
2564 |
|
|
setup_error_code |= INVALID_BOARD_STATUS;
|
2565 |
|
|
return;
|
2566 |
|
|
}
|
2567 |
|
|
last = index;
|
2568 |
|
|
break;
|
2569 |
|
|
case 2:
|
2570 |
|
|
board.type = ints[index];
|
2571 |
|
|
if (board.type >= PCIXEM) {
|
2572 |
|
|
printk(KERN_ERR "epca_setup: Invalid board type 0x%x\n", board.type);
|
2573 |
|
|
invalid_lilo_config = 1;
|
2574 |
|
|
setup_error_code |= INVALID_BOARD_TYPE;
|
2575 |
|
|
return;
|
2576 |
|
|
}
|
2577 |
|
|
last = index;
|
2578 |
|
|
break;
|
2579 |
|
|
case 3:
|
2580 |
|
|
board.altpin = ints[index];
|
2581 |
|
|
if (board.altpin > 1) {
|
2582 |
|
|
printk(KERN_ERR "epca_setup: Invalid board altpin 0x%x\n", board.altpin);
|
2583 |
|
|
invalid_lilo_config = 1;
|
2584 |
|
|
setup_error_code |= INVALID_ALTPIN;
|
2585 |
|
|
return;
|
2586 |
|
|
}
|
2587 |
|
|
last = index;
|
2588 |
|
|
break;
|
2589 |
|
|
|
2590 |
|
|
case 4:
|
2591 |
|
|
board.numports = ints[index];
|
2592 |
|
|
if (board.numports < 2 || board.numports > 256) {
|
2593 |
|
|
printk(KERN_ERR "epca_setup: Invalid board numports 0x%x\n", board.numports);
|
2594 |
|
|
invalid_lilo_config = 1;
|
2595 |
|
|
setup_error_code |= INVALID_NUM_PORTS;
|
2596 |
|
|
return;
|
2597 |
|
|
}
|
2598 |
|
|
nbdevs += board.numports;
|
2599 |
|
|
last = index;
|
2600 |
|
|
break;
|
2601 |
|
|
|
2602 |
|
|
case 5:
|
2603 |
|
|
board.port = ints[index];
|
2604 |
|
|
if (ints[index] <= 0) {
|
2605 |
|
|
printk(KERN_ERR "epca_setup: Invalid io port 0x%x\n", (unsigned int)board.port);
|
2606 |
|
|
invalid_lilo_config = 1;
|
2607 |
|
|
setup_error_code |= INVALID_PORT_BASE;
|
2608 |
|
|
return;
|
2609 |
|
|
}
|
2610 |
|
|
last = index;
|
2611 |
|
|
break;
|
2612 |
|
|
|
2613 |
|
|
case 6:
|
2614 |
|
|
board.membase = ints[index];
|
2615 |
|
|
if (ints[index] <= 0) {
|
2616 |
|
|
printk(KERN_ERR "epca_setup: Invalid memory base 0x%x\n",(unsigned int)board.membase);
|
2617 |
|
|
invalid_lilo_config = 1;
|
2618 |
|
|
setup_error_code |= INVALID_MEM_BASE;
|
2619 |
|
|
return;
|
2620 |
|
|
}
|
2621 |
|
|
last = index;
|
2622 |
|
|
break;
|
2623 |
|
|
|
2624 |
|
|
default:
|
2625 |
|
|
printk(KERN_ERR "<Error> - epca_setup: Too many integer parms\n");
|
2626 |
|
|
return;
|
2627 |
|
|
|
2628 |
|
|
} /* End parse switch */
|
2629 |
|
|
|
2630 |
|
|
while (str && *str) { /* Begin while there is a string arg */
|
2631 |
|
|
/* find the next comma or terminator */
|
2632 |
|
|
temp = str;
|
2633 |
|
|
/* While string is not null, and a comma hasn't been found */
|
2634 |
|
|
while (*temp && (*temp != ','))
|
2635 |
|
|
temp++;
|
2636 |
|
|
if (!*temp)
|
2637 |
|
|
temp = NULL;
|
2638 |
|
|
else
|
2639 |
|
|
*temp++ = 0;
|
2640 |
|
|
/* Set index to the number of args + 1 */
|
2641 |
|
|
index = last + 1;
|
2642 |
|
|
|
2643 |
|
|
switch (index) {
|
2644 |
|
|
case 1:
|
2645 |
|
|
len = strlen(str);
|
2646 |
|
|
if (strncmp("Disable", str, len) == 0)
|
2647 |
|
|
board.status = 0;
|
2648 |
|
|
else if (strncmp("Enable", str, len) == 0)
|
2649 |
|
|
board.status = 1;
|
2650 |
|
|
else {
|
2651 |
|
|
printk(KERN_ERR "epca_setup: Invalid status %s\n", str);
|
2652 |
|
|
invalid_lilo_config = 1;
|
2653 |
|
|
setup_error_code |= INVALID_BOARD_STATUS;
|
2654 |
|
|
return;
|
2655 |
|
|
}
|
2656 |
|
|
last = index;
|
2657 |
|
|
break;
|
2658 |
|
|
|
2659 |
|
|
case 2:
|
2660 |
|
|
for (loop = 0; loop < EPCA_NUM_TYPES; loop++)
|
2661 |
|
|
if (strcmp(board_desc[loop], str) == 0)
|
2662 |
|
|
break;
|
2663 |
|
|
/*
|
2664 |
|
|
* If the index incremented above refers to a
|
2665 |
|
|
* legitamate board type set it here.
|
2666 |
|
|
*/
|
2667 |
|
|
if (index < EPCA_NUM_TYPES)
|
2668 |
|
|
board.type = loop;
|
2669 |
|
|
else {
|
2670 |
|
|
printk(KERN_ERR "epca_setup: Invalid board type: %s\n", str);
|
2671 |
|
|
invalid_lilo_config = 1;
|
2672 |
|
|
setup_error_code |= INVALID_BOARD_TYPE;
|
2673 |
|
|
return;
|
2674 |
|
|
}
|
2675 |
|
|
last = index;
|
2676 |
|
|
break;
|
2677 |
|
|
|
2678 |
|
|
case 3:
|
2679 |
|
|
len = strlen(str);
|
2680 |
|
|
if (strncmp("Disable", str, len) == 0)
|
2681 |
|
|
board.altpin = 0;
|
2682 |
|
|
else if (strncmp("Enable", str, len) == 0)
|
2683 |
|
|
board.altpin = 1;
|
2684 |
|
|
else {
|
2685 |
|
|
printk(KERN_ERR "epca_setup: Invalid altpin %s\n", str);
|
2686 |
|
|
invalid_lilo_config = 1;
|
2687 |
|
|
setup_error_code |= INVALID_ALTPIN;
|
2688 |
|
|
return;
|
2689 |
|
|
}
|
2690 |
|
|
last = index;
|
2691 |
|
|
break;
|
2692 |
|
|
|
2693 |
|
|
case 4:
|
2694 |
|
|
t2 = str;
|
2695 |
|
|
while (isdigit(*t2))
|
2696 |
|
|
t2++;
|
2697 |
|
|
|
2698 |
|
|
if (*t2) {
|
2699 |
|
|
printk(KERN_ERR "epca_setup: Invalid port count %s\n", str);
|
2700 |
|
|
invalid_lilo_config = 1;
|
2701 |
|
|
setup_error_code |= INVALID_NUM_PORTS;
|
2702 |
|
|
return;
|
2703 |
|
|
}
|
2704 |
|
|
|
2705 |
|
|
/*
|
2706 |
|
|
* There is not a man page for simple_strtoul but the
|
2707 |
|
|
* code can be found in vsprintf.c. The first argument
|
2708 |
|
|
* is the string to translate (To an unsigned long
|
2709 |
|
|
* obviously), the second argument can be the address
|
2710 |
|
|
* of any character variable or a NULL. If a variable
|
2711 |
|
|
* is given, the end pointer of the string will be
|
2712 |
|
|
* stored in that variable; if a NULL is given the end
|
2713 |
|
|
* pointer will not be returned. The last argument is
|
2714 |
|
|
* the base to use. If a 0 is indicated, the routine
|
2715 |
|
|
* will attempt to determine the proper base by looking
|
2716 |
|
|
* at the values prefix (A '0' for octal, a 'x' for
|
2717 |
|
|
* hex, etc ... If a value is given it will use that
|
2718 |
|
|
* value as the base.
|
2719 |
|
|
*/
|
2720 |
|
|
board.numports = simple_strtoul(str, NULL, 0);
|
2721 |
|
|
nbdevs += board.numports;
|
2722 |
|
|
last = index;
|
2723 |
|
|
break;
|
2724 |
|
|
|
2725 |
|
|
case 5:
|
2726 |
|
|
t2 = str;
|
2727 |
|
|
while (isxdigit(*t2))
|
2728 |
|
|
t2++;
|
2729 |
|
|
|
2730 |
|
|
if (*t2) {
|
2731 |
|
|
printk(KERN_ERR "epca_setup: Invalid i/o address %s\n", str);
|
2732 |
|
|
invalid_lilo_config = 1;
|
2733 |
|
|
setup_error_code |= INVALID_PORT_BASE;
|
2734 |
|
|
return;
|
2735 |
|
|
}
|
2736 |
|
|
|
2737 |
|
|
board.port = simple_strtoul(str, NULL, 16);
|
2738 |
|
|
last = index;
|
2739 |
|
|
break;
|
2740 |
|
|
|
2741 |
|
|
case 6:
|
2742 |
|
|
t2 = str;
|
2743 |
|
|
while (isxdigit(*t2))
|
2744 |
|
|
t2++;
|
2745 |
|
|
|
2746 |
|
|
if (*t2) {
|
2747 |
|
|
printk(KERN_ERR "epca_setup: Invalid memory base %s\n",str);
|
2748 |
|
|
invalid_lilo_config = 1;
|
2749 |
|
|
setup_error_code |= INVALID_MEM_BASE;
|
2750 |
|
|
return;
|
2751 |
|
|
}
|
2752 |
|
|
board.membase = simple_strtoul(str, NULL, 16);
|
2753 |
|
|
last = index;
|
2754 |
|
|
break;
|
2755 |
|
|
default:
|
2756 |
|
|
printk(KERN_ERR "epca: Too many string parms\n");
|
2757 |
|
|
return;
|
2758 |
|
|
}
|
2759 |
|
|
str = temp;
|
2760 |
|
|
} /* End while there is a string arg */
|
2761 |
|
|
|
2762 |
|
|
if (last < 6) {
|
2763 |
|
|
printk(KERN_ERR "epca: Insufficient parms specified\n");
|
2764 |
|
|
return;
|
2765 |
|
|
}
|
2766 |
|
|
|
2767 |
|
|
/* I should REALLY validate the stuff here */
|
2768 |
|
|
/* Copies our local copy of board into boards */
|
2769 |
|
|
memcpy((void *)&boards[num_cards],(void *)&board, sizeof(board));
|
2770 |
|
|
/* Does this get called once per lilo arg are what ? */
|
2771 |
|
|
printk(KERN_INFO "PC/Xx: Added board %i, %s %i ports at 0x%4.4X base 0x%6.6X\n",
|
2772 |
|
|
num_cards, board_desc[board.type],
|
2773 |
|
|
board.numports, (int)board.port, (unsigned int) board.membase);
|
2774 |
|
|
num_cards++;
|
2775 |
|
|
}
|
2776 |
|
|
|
2777 |
|
|
enum epic_board_types {
|
2778 |
|
|
brd_xr = 0,
|
2779 |
|
|
brd_xem,
|
2780 |
|
|
brd_cx,
|
2781 |
|
|
brd_xrj,
|
2782 |
|
|
};
|
2783 |
|
|
|
2784 |
|
|
/* indexed directly by epic_board_types enum */
|
2785 |
|
|
static struct {
|
2786 |
|
|
unsigned char board_type;
|
2787 |
|
|
unsigned bar_idx; /* PCI base address region */
|
2788 |
|
|
} epca_info_tbl[] = {
|
2789 |
|
|
{ PCIXR, 0, },
|
2790 |
|
|
{ PCIXEM, 0, },
|
2791 |
|
|
{ PCICX, 0, },
|
2792 |
|
|
{ PCIXRJ, 2, },
|
2793 |
|
|
};
|
2794 |
|
|
|
2795 |
|
|
static int __devinit epca_init_one(struct pci_dev *pdev,
|
2796 |
|
|
const struct pci_device_id *ent)
|
2797 |
|
|
{
|
2798 |
|
|
static int board_num = -1;
|
2799 |
|
|
int board_idx, info_idx = ent->driver_data;
|
2800 |
|
|
unsigned long addr;
|
2801 |
|
|
|
2802 |
|
|
if (pci_enable_device(pdev))
|
2803 |
|
|
return -EIO;
|
2804 |
|
|
|
2805 |
|
|
board_num++;
|
2806 |
|
|
board_idx = board_num + num_cards;
|
2807 |
|
|
if (board_idx >= MAXBOARDS)
|
2808 |
|
|
goto err_out;
|
2809 |
|
|
|
2810 |
|
|
addr = pci_resource_start (pdev, epca_info_tbl[info_idx].bar_idx);
|
2811 |
|
|
if (!addr) {
|
2812 |
|
|
printk (KERN_ERR PFX "PCI region #%d not available (size 0)\n",
|
2813 |
|
|
epca_info_tbl[info_idx].bar_idx);
|
2814 |
|
|
goto err_out;
|
2815 |
|
|
}
|
2816 |
|
|
|
2817 |
|
|
boards[board_idx].status = ENABLED;
|
2818 |
|
|
boards[board_idx].type = epca_info_tbl[info_idx].board_type;
|
2819 |
|
|
boards[board_idx].numports = 0x0;
|
2820 |
|
|
boards[board_idx].port = addr + PCI_IO_OFFSET;
|
2821 |
|
|
boards[board_idx].membase = addr;
|
2822 |
|
|
|
2823 |
|
|
if (!request_mem_region (addr + PCI_IO_OFFSET, 0x200000, "epca")) {
|
2824 |
|
|
printk (KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n",
|
2825 |
|
|
0x200000, addr + PCI_IO_OFFSET);
|
2826 |
|
|
goto err_out;
|
2827 |
|
|
}
|
2828 |
|
|
|
2829 |
|
|
boards[board_idx].re_map_port = ioremap(addr + PCI_IO_OFFSET, 0x200000);
|
2830 |
|
|
if (!boards[board_idx].re_map_port) {
|
2831 |
|
|
printk (KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n",
|
2832 |
|
|
0x200000, addr + PCI_IO_OFFSET);
|
2833 |
|
|
goto err_out_free_pciio;
|
2834 |
|
|
}
|
2835 |
|
|
|
2836 |
|
|
if (!request_mem_region (addr, 0x200000, "epca")) {
|
2837 |
|
|
printk (KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n",
|
2838 |
|
|
0x200000, addr);
|
2839 |
|
|
goto err_out_free_iounmap;
|
2840 |
|
|
}
|
2841 |
|
|
|
2842 |
|
|
boards[board_idx].re_map_membase = ioremap(addr, 0x200000);
|
2843 |
|
|
if (!boards[board_idx].re_map_membase) {
|
2844 |
|
|
printk (KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n",
|
2845 |
|
|
0x200000, addr + PCI_IO_OFFSET);
|
2846 |
|
|
goto err_out_free_memregion;
|
2847 |
|
|
}
|
2848 |
|
|
|
2849 |
|
|
/*
|
2850 |
|
|
* I don't know what the below does, but the hardware guys say its
|
2851 |
|
|
* required on everything except PLX (In this case XRJ).
|
2852 |
|
|
*/
|
2853 |
|
|
if (info_idx != brd_xrj) {
|
2854 |
|
|
pci_write_config_byte(pdev, 0x40, 0);
|
2855 |
|
|
pci_write_config_byte(pdev, 0x46, 0);
|
2856 |
|
|
}
|
2857 |
|
|
|
2858 |
|
|
return 0;
|
2859 |
|
|
|
2860 |
|
|
err_out_free_memregion:
|
2861 |
|
|
release_mem_region (addr, 0x200000);
|
2862 |
|
|
err_out_free_iounmap:
|
2863 |
|
|
iounmap (boards[board_idx].re_map_port);
|
2864 |
|
|
err_out_free_pciio:
|
2865 |
|
|
release_mem_region (addr + PCI_IO_OFFSET, 0x200000);
|
2866 |
|
|
err_out:
|
2867 |
|
|
return -ENODEV;
|
2868 |
|
|
}
|
2869 |
|
|
|
2870 |
|
|
|
2871 |
|
|
static struct pci_device_id epca_pci_tbl[] = {
|
2872 |
|
|
{ PCI_VENDOR_DIGI, PCI_DEVICE_XR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xr },
|
2873 |
|
|
{ PCI_VENDOR_DIGI, PCI_DEVICE_XEM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xem },
|
2874 |
|
|
{ PCI_VENDOR_DIGI, PCI_DEVICE_CX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_cx },
|
2875 |
|
|
{ PCI_VENDOR_DIGI, PCI_DEVICE_XRJ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xrj },
|
2876 |
|
|
{ 0, }
|
2877 |
|
|
};
|
2878 |
|
|
|
2879 |
|
|
MODULE_DEVICE_TABLE(pci, epca_pci_tbl);
|
2880 |
|
|
|
2881 |
|
|
int __init init_PCI (void)
|
2882 |
|
|
{
|
2883 |
|
|
memset (&epca_driver, 0, sizeof (epca_driver));
|
2884 |
|
|
epca_driver.name = "epca";
|
2885 |
|
|
epca_driver.id_table = epca_pci_tbl;
|
2886 |
|
|
epca_driver.probe = epca_init_one;
|
2887 |
|
|
|
2888 |
|
|
return pci_register_driver(&epca_driver);
|
2889 |
|
|
}
|
2890 |
|
|
|
2891 |
|
|
MODULE_LICENSE("GPL");
|