622 lines
15 KiB
C
622 lines
15 KiB
C
/*
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* Copyright 1992 by the University of Guelph
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*
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* Permission to use, copy and modify this
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* software and its documentation for any purpose and without
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* fee is hereby granted, provided that the above copyright
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* notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting
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* documentation.
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* University of Guelph makes no representations about the suitability of
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* this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* $Id: mse.c,v 1.24 1995/12/15 00:54:25 bde Exp $
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*/
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/*
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* Driver for the Logitech and ATI Inport Bus mice for use with 386bsd and
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* the X386 port, courtesy of
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* Rick Macklem, rick@snowhite.cis.uoguelph.ca
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* Caveats: The driver currently uses spltty(), but doesn't use any
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* generic tty code. It could use splmse() (that only masks off the
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* bus mouse interrupt, but that would require hacking in i386/isa/icu.s.
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* (This may be worth the effort, since the Logitech generates 30/60
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* interrupts/sec continuously while it is open.)
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* NB: The ATI has NOT been tested yet!
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*/
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/*
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* Modification history:
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* Sep 6, 1994 -- Lars Fredriksen(fredriks@mcs.com)
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* improved probe based on input from Logitech.
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*
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* Oct 19, 1992 -- E. Stark (stark@cs.sunysb.edu)
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* fixes to make it work with Microsoft InPort busmouse
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*
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* Jan, 1993 -- E. Stark (stark@cs.sunysb.edu)
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* added patches for new "select" interface
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*
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* May 4, 1993 -- E. Stark (stark@cs.sunysb.edu)
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* changed position of some spl()'s in mseread
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*
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* October 8, 1993 -- E. Stark (stark@cs.sunysb.edu)
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* limit maximum negative x/y value to -127 to work around XFree problem
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* that causes spurious button pushes.
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*/
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#include "mse.h"
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#if NMSE > 0
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/proc.h>
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#include <sys/buf.h>
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#include <sys/kernel.h>
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#include <sys/ioctl.h>
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#include <sys/uio.h>
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#include <sys/devconf.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif /*DEVFS*/
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#include <machine/clock.h>
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#include <i386/isa/isa_device.h>
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#include <i386/isa/icu.h>
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static int mseprobe(struct isa_device *);
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static int mseattach(struct isa_device *);
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struct isa_driver msedriver = {
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mseprobe, mseattach, "mse"
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};
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static d_open_t mseopen;
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static d_close_t mseclose;
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static d_read_t mseread;
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static d_select_t mseselect;
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#define CDEV_MAJOR 27
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static struct cdevsw mse_cdevsw =
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{ mseopen, mseclose, mseread, nowrite, /*27*/
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noioc, nostop, nullreset, nodevtotty,/* mse */
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mseselect, nommap, NULL, "mse", NULL, -1 };
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/*
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* Software control structure for mouse. The sc_enablemouse(),
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* sc_disablemouse() and sc_getmouse() routines must be called spl'd().
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*/
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#define PROTOBYTES 5
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static struct mse_softc {
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int sc_flags;
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int sc_mousetype;
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struct selinfo sc_selp;
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u_int sc_port;
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void (*sc_enablemouse) __P((u_int port));
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void (*sc_disablemouse) __P((u_int port));
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void (*sc_getmouse) __P((u_int port, int *dx, int *dy, int *but));
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int sc_deltax;
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int sc_deltay;
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int sc_obuttons;
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int sc_buttons;
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int sc_bytesread;
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u_char sc_bytes[PROTOBYTES];
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#ifdef DEVFS
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void *devfs_token;
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void *n_devfs_token;
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#endif
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} mse_sc[NMSE];
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/* Flags */
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#define MSESC_OPEN 0x1
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#define MSESC_WANT 0x2
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/* and Mouse Types */
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#define MSE_LOGITECH 0x1
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#define MSE_ATIINPORT 0x2
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#define MSE_LOGI_SIG 0xA5
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#define MSE_PORTA 0
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#define MSE_PORTB 1
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#define MSE_PORTC 2
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#define MSE_PORTD 3
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#define MSE_UNIT(dev) (minor(dev) >> 1)
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#define MSE_NBLOCKIO(dev) (minor(dev) & 0x1)
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/*
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* Logitech bus mouse definitions
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*/
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#define MSE_SETUP 0x91 /* What does this mean? */
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/* The definition for the control port */
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/* is as follows: */
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/* D7 = Mode set flag (1 = active) */
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/* D6,D5 = Mode selection (port A) */
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/* 00 = Mode 0 = Basic I/O */
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/* 01 = Mode 1 = Strobed I/O */
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/* 10 = Mode 2 = Bi-dir bus */
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/* D4 = Port A direction (1 = input)*/
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/* D3 = Port C (upper 4 bits) */
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/* direction. (1 = input) */
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/* D2 = Mode selection (port B & C) */
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/* 0 = Mode 0 = Basic I/O */
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/* 1 = Mode 1 = Strobed I/O */
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/* D1 = Port B direction (1 = input)*/
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/* D0 = Port C (lower 4 bits) */
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/* direction. (1 = input) */
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/* So 91 means Basic I/O on all 3 ports,*/
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/* Port A is an input port, B is an */
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/* output port, C is split with upper */
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/* 4 bits being an output port and lower*/
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/* 4 bits an input port, and enable the */
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/* sucker. */
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/* Courtesy Intel 8255 databook. Lars */
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#define MSE_HOLD 0x80
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#define MSE_RXLOW 0x00
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#define MSE_RXHIGH 0x20
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#define MSE_RYLOW 0x40
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#define MSE_RYHIGH 0x60
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#define MSE_DISINTR 0x10
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#define MSE_INTREN 0x00
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static int mse_probelogi __P((struct isa_device *idp));
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static void mse_disablelogi __P((u_int port));
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static void mse_getlogi __P((u_int port, int *dx, int *dy, int *but));
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static void mse_enablelogi __P((u_int port));
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/*
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* ATI Inport mouse definitions
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*/
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#define MSE_INPORT_RESET 0x80
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#define MSE_INPORT_STATUS 0x00
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#define MSE_INPORT_DX 0x01
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#define MSE_INPORT_DY 0x02
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#define MSE_INPORT_MODE 0x07
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#define MSE_INPORT_HOLD 0x20
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#define MSE_INPORT_INTREN 0x09
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static int mse_probeati __P((struct isa_device *idp));
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static void mse_enableati __P((u_int port));
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static void mse_disableati __P((u_int port));
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static void mse_getati __P((u_int port, int *dx, int *dy, int *but));
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#define MSEPRI (PZERO + 3)
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/*
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* Table of mouse types.
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* Keep the Logitech last, since I haven't figured out how to probe it
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* properly yet. (Someday I'll have the documentation.)
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*/
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static struct mse_types {
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int m_type; /* Type of bus mouse */
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int (*m_probe) __P((struct isa_device *idp));
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/* Probe routine to test for it */
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void (*m_enable) __P((u_int port));
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/* Start routine */
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void (*m_disable) __P((u_int port));
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/* Disable interrupts routine */
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void (*m_get) __P((u_int port, int *dx, int *dy, int *but));
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/* and get mouse status */
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} mse_types[] = {
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{ MSE_ATIINPORT, mse_probeati, mse_enableati, mse_disableati, mse_getati },
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{ MSE_LOGITECH, mse_probelogi, mse_enablelogi, mse_disablelogi, mse_getlogi },
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{ 0, },
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};
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static struct kern_devconf kdc_mse[NMSE] = { {
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0, 0, 0, /* filled in by dev_attach */
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"mse", 0, { MDDT_ISA, 0, "tty" },
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isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
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&kdc_isa0, /* parent */
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0, /* parentdata */
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DC_UNCONFIGURED, /* state */
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"ATI or Logitech bus mouse adapter",
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DC_CLS_MISC /* class */
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} };
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static inline void
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mse_registerdev(struct isa_device *id)
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{
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if(id->id_unit)
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kdc_mse[id->id_unit] = kdc_mse[0];
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kdc_mse[id->id_unit].kdc_unit = id->id_unit;
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kdc_mse[id->id_unit].kdc_isa = id;
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dev_attach(&kdc_mse[id->id_unit]);
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}
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int
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mseprobe(idp)
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register struct isa_device *idp;
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{
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register struct mse_softc *sc = &mse_sc[idp->id_unit];
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register int i;
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mse_registerdev(idp);
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/*
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* Check for each mouse type in the table.
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*/
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i = 0;
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while (mse_types[i].m_type) {
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if ((*mse_types[i].m_probe)(idp)) {
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sc->sc_mousetype = mse_types[i].m_type;
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sc->sc_enablemouse = mse_types[i].m_enable;
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sc->sc_disablemouse = mse_types[i].m_disable;
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sc->sc_getmouse = mse_types[i].m_get;
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return (1);
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}
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i++;
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}
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return (0);
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}
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int
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mseattach(idp)
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struct isa_device *idp;
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{
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int unit = idp->id_unit;
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struct mse_softc *sc = &mse_sc[unit];
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sc->sc_port = idp->id_iobase;
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kdc_mse[unit].kdc_state = DC_IDLE;
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#ifdef DEVFS
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sc->devfs_token =
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devfs_add_devswf(&mse_cdevsw, unit << 1, DV_CHR, 0, 0,
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0600, "mse%d", unit);
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sc->n_devfs_token =
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devfs_add_devswf(&mse_cdevsw, (unit<<1)+1, DV_CHR,0, 0,
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0600, "nmse%d", unit);
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#endif
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return (1);
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}
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/*
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* Exclusive open the mouse, initialize it and enable interrupts.
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*/
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static int
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mseopen(dev, flags, fmt, p)
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dev_t dev;
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int flags;
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int fmt;
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struct proc *p;
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{
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register struct mse_softc *sc;
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int s;
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if (MSE_UNIT(dev) >= NMSE)
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return (ENXIO);
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sc = &mse_sc[MSE_UNIT(dev)];
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if (sc->sc_flags & MSESC_OPEN)
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return (EBUSY);
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sc->sc_flags |= MSESC_OPEN;
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kdc_mse[MSE_UNIT(dev)].kdc_state = DC_BUSY;
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sc->sc_obuttons = sc->sc_buttons = 0x7;
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sc->sc_deltax = sc->sc_deltay = 0;
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sc->sc_bytesread = PROTOBYTES;
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/*
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* Initialize mouse interface and enable interrupts.
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*/
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s = spltty();
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(*sc->sc_enablemouse)(sc->sc_port);
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splx(s);
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return (0);
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}
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/*
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* mseclose: just turn off mouse innterrupts.
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*/
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static int
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mseclose(dev, flags, fmt, p)
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dev_t dev;
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int flags;
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int fmt;
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struct proc *p;
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{
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struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
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int s;
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s = spltty();
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(*sc->sc_disablemouse)(sc->sc_port);
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sc->sc_flags &= ~MSESC_OPEN;
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kdc_mse[MSE_UNIT(dev)].kdc_state = DC_IDLE;
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splx(s);
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return(0);
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}
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/*
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* mseread: return mouse info using the MSC serial protocol, but without
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* using bytes 4 and 5.
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* (Yes this is cheesy, but it makes the X386 server happy, so...)
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*/
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static int
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mseread(dev, uio, ioflag)
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dev_t dev;
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struct uio *uio;
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int ioflag;
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{
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register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
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int xfer, s, error;
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/*
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* If there are no protocol bytes to be read, set up a new protocol
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* packet.
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*/
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s = spltty(); /* XXX Should be its own spl, but where is imlXX() */
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if (sc->sc_bytesread >= PROTOBYTES) {
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while (sc->sc_deltax == 0 && sc->sc_deltay == 0 &&
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(sc->sc_obuttons ^ sc->sc_buttons) == 0) {
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if (MSE_NBLOCKIO(dev)) {
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splx(s);
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return (0);
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}
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sc->sc_flags |= MSESC_WANT;
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if (error = tsleep((caddr_t)sc, MSEPRI | PCATCH,
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"mseread", 0)) {
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splx(s);
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return (error);
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}
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}
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/*
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* Generate protocol bytes.
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* For some reason X386 expects 5 bytes but never uses
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* the fourth or fifth?
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*/
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sc->sc_bytes[0] = 0x80 | (sc->sc_buttons & ~0xf8);
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if (sc->sc_deltax > 127)
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sc->sc_deltax = 127;
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if (sc->sc_deltax < -127)
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sc->sc_deltax = -127;
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sc->sc_deltay = -sc->sc_deltay; /* Otherwise mousey goes wrong way */
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if (sc->sc_deltay > 127)
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sc->sc_deltay = 127;
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if (sc->sc_deltay < -127)
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sc->sc_deltay = -127;
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sc->sc_bytes[1] = sc->sc_deltax;
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sc->sc_bytes[2] = sc->sc_deltay;
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sc->sc_bytes[3] = sc->sc_bytes[4] = 0;
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sc->sc_obuttons = sc->sc_buttons;
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sc->sc_deltax = sc->sc_deltay = 0;
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sc->sc_bytesread = 0;
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}
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splx(s);
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xfer = min(uio->uio_resid, PROTOBYTES - sc->sc_bytesread);
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if (error = uiomove(&sc->sc_bytes[sc->sc_bytesread], xfer, uio))
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return (error);
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sc->sc_bytesread += xfer;
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return(0);
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}
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/*
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* mseselect: check for mouse input to be processed.
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*/
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static int
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mseselect(dev, rw, p)
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dev_t dev;
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int rw;
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struct proc *p;
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{
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register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
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int s;
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s = spltty();
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if (sc->sc_bytesread != PROTOBYTES || sc->sc_deltax != 0 ||
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sc->sc_deltay != 0 || (sc->sc_obuttons ^ sc->sc_buttons) != 0) {
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splx(s);
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return (1);
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}
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/*
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* Since this is an exclusive open device, any previous proc.
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* pointer is trash now, so we can just assign it.
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*/
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selrecord(p, &sc->sc_selp);
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splx(s);
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return (0);
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}
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/*
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* mseintr: update mouse status. sc_deltax and sc_deltay are accumulative.
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*/
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void
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mseintr(unit)
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int unit;
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{
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register struct mse_softc *sc = &mse_sc[unit];
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#ifdef DEBUG
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static int mse_intrcnt = 0;
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if((mse_intrcnt++ % 10000) == 0)
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printf("mseintr\n");
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#endif /* DEBUG */
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if ((sc->sc_flags & MSESC_OPEN) == 0)
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return;
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(*sc->sc_getmouse)(sc->sc_port, &sc->sc_deltax, &sc->sc_deltay, &sc->sc_buttons);
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/*
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* If mouse state has changed, wake up anyone wanting to know.
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*/
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if (sc->sc_deltax != 0 || sc->sc_deltay != 0 ||
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(sc->sc_obuttons ^ sc->sc_buttons) != 0) {
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if (sc->sc_flags & MSESC_WANT) {
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sc->sc_flags &= ~MSESC_WANT;
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wakeup((caddr_t)sc);
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}
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selwakeup(&sc->sc_selp);
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}
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}
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/*
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* Routines for the Logitech mouse.
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*/
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/*
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* Test for a Logitech bus mouse and return 1 if it is.
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* (until I know how to use the signature port properly, just disable
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* interrupts and return 1)
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*/
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static int
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mse_probelogi(idp)
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register struct isa_device *idp;
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{
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int sig;
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outb(idp->id_iobase + MSE_PORTD, MSE_SETUP);
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/* set the signature port */
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outb(idp->id_iobase + MSE_PORTB, MSE_LOGI_SIG);
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DELAY(30000); /* 30 ms delay */
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sig = inb(idp->id_iobase + MSE_PORTB) & 0xFF;
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if (sig == MSE_LOGI_SIG) {
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outb(idp->id_iobase + MSE_PORTC, MSE_DISINTR);
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return(1);
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} else {
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printf("mse%d: wrong signature %x\n",idp->id_unit,sig);
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return(0);
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}
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}
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/*
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* Initialize Logitech mouse and enable interrupts.
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*/
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static void
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mse_enablelogi(port)
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register u_int port;
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{
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int dx, dy, but;
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outb(port + MSE_PORTD, MSE_SETUP);
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mse_getlogi(port, &dx, &dy, &but);
|
|
}
|
|
|
|
/*
|
|
* Disable interrupts for Logitech mouse.
|
|
*/
|
|
static void
|
|
mse_disablelogi(port)
|
|
register u_int port;
|
|
{
|
|
|
|
outb(port + MSE_PORTC, MSE_DISINTR);
|
|
}
|
|
|
|
/*
|
|
* Get the current dx, dy and button up/down state.
|
|
*/
|
|
static void
|
|
mse_getlogi(port, dx, dy, but)
|
|
register u_int port;
|
|
int *dx;
|
|
int *dy;
|
|
int *but;
|
|
{
|
|
register char x, y;
|
|
|
|
outb(port + MSE_PORTC, MSE_HOLD | MSE_RXLOW);
|
|
x = inb(port + MSE_PORTA);
|
|
*but = (x >> 5) & 0x7;
|
|
x &= 0xf;
|
|
outb(port + MSE_PORTC, MSE_HOLD | MSE_RXHIGH);
|
|
x |= (inb(port + MSE_PORTA) << 4);
|
|
outb(port + MSE_PORTC, MSE_HOLD | MSE_RYLOW);
|
|
y = (inb(port + MSE_PORTA) & 0xf);
|
|
outb(port + MSE_PORTC, MSE_HOLD | MSE_RYHIGH);
|
|
y |= (inb(port + MSE_PORTA) << 4);
|
|
*dx += x;
|
|
*dy += y;
|
|
outb(port + MSE_PORTC, MSE_INTREN);
|
|
}
|
|
|
|
/*
|
|
* Routines for the ATI Inport bus mouse.
|
|
*/
|
|
/*
|
|
* Test for a ATI Inport bus mouse and return 1 if it is.
|
|
* (do not enable interrupts)
|
|
*/
|
|
static int
|
|
mse_probeati(idp)
|
|
register struct isa_device *idp;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 2; i++)
|
|
if (inb(idp->id_iobase + MSE_PORTC) == 0xde)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Initialize ATI Inport mouse and enable interrupts.
|
|
*/
|
|
static void
|
|
mse_enableati(port)
|
|
register u_int port;
|
|
{
|
|
|
|
outb(port + MSE_PORTA, MSE_INPORT_RESET);
|
|
outb(port + MSE_PORTA, MSE_INPORT_MODE);
|
|
outb(port + MSE_PORTB, MSE_INPORT_INTREN);
|
|
}
|
|
|
|
/*
|
|
* Disable interrupts for ATI Inport mouse.
|
|
*/
|
|
static void
|
|
mse_disableati(port)
|
|
register u_int port;
|
|
{
|
|
|
|
outb(port + MSE_PORTA, MSE_INPORT_MODE);
|
|
outb(port + MSE_PORTB, 0);
|
|
}
|
|
|
|
/*
|
|
* Get current dx, dy and up/down button state.
|
|
*/
|
|
static void
|
|
mse_getati(port, dx, dy, but)
|
|
register u_int port;
|
|
int *dx;
|
|
int *dy;
|
|
int *but;
|
|
{
|
|
register char byte;
|
|
|
|
outb(port + MSE_PORTA, MSE_INPORT_MODE);
|
|
outb(port + MSE_PORTB, MSE_INPORT_HOLD);
|
|
outb(port + MSE_PORTA, MSE_INPORT_STATUS);
|
|
*but = ~(inb(port + MSE_PORTB) & 0x7);
|
|
outb(port + MSE_PORTA, MSE_INPORT_DX);
|
|
byte = inb(port + MSE_PORTB);
|
|
*dx += byte;
|
|
outb(port + MSE_PORTA, MSE_INPORT_DY);
|
|
byte = inb(port + MSE_PORTB);
|
|
*dy += byte;
|
|
outb(port + MSE_PORTA, MSE_INPORT_MODE);
|
|
outb(port + MSE_PORTB, MSE_INPORT_INTREN);
|
|
}
|
|
|
|
static mse_devsw_installed = 0;
|
|
|
|
static void mse_drvinit(void *unused)
|
|
{
|
|
dev_t dev;
|
|
|
|
if( ! mse_devsw_installed ) {
|
|
dev = makedev(CDEV_MAJOR, 0);
|
|
cdevsw_add(&dev,&mse_cdevsw, NULL);
|
|
mse_devsw_installed = 1;
|
|
}
|
|
}
|
|
|
|
SYSINIT(msedev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,mse_drvinit,NULL)
|
|
|
|
|
|
#endif /* NMSE */
|