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authornate <nate@FreeBSD.org>1993-10-19 19:46:49 +0000
committernate <nate@FreeBSD.org>1993-10-19 19:46:49 +0000
commit2d3f6b81db50931ebd42907aecb1923faf926a8a (patch)
treee38320ce975fdd110195507db84678fa97a9058e /sys/dev/mse
parent5e95a8816c4f57a232031dd052ad53cf1382247e (diff)
downloadFreeBSD-src-2d3f6b81db50931ebd42907aecb1923faf926a8a.zip
FreeBSD-src-2d3f6b81db50931ebd42907aecb1923faf926a8a.tar.gz
This is my patched version of a busmouse driver originally by Rick Macklem
(rick@snowhite.cis.uoguelph.ca). I am currently using it with a Microsoft InPort busmouse, under FreeBSD Epsilon. I hadn't planned on supporting it, but I have patched it a few times, and I guess this is now the de facto reference version, so send me any problems or improvements. - Gene Stark stark@cs.sunysb.edu October 9, 1993
Diffstat (limited to 'sys/dev/mse')
-rw-r--r--sys/dev/mse/mse.c493
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diff --git a/sys/dev/mse/mse.c b/sys/dev/mse/mse.c
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+/*
+ * Copyright 1992 by the University of Guelph
+ *
+ * Permission to use, copy and modify this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation.
+ * University of Guelph makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+/*
+ * Driver for the Logitech and ATI Inport Bus mice for use with 386bsd and
+ * the X386 port, courtesy of
+ * Rick Macklem, rick@snowhite.cis.uoguelph.ca
+ * Caveats: The driver currently uses spltty(), but doesn't use any
+ * generic tty code. It could use splmse() (that only masks off the
+ * bus mouse interrupt, but that would require hacking in i386/isa/icu.s.
+ * (This may be worth the effort, since the Logitech generates 30/60
+ * interrupts/sec continuously while it is open.)
+ * NB: The ATI has NOT been tested yet!
+ */
+
+/*
+ * Modification history:
+ *
+ * Oct 19, 1992 -- E. Stark (stark@cs.sunysb.edu)
+ * fixes to make it work with Microsoft InPort busmouse
+ *
+ * Jan, 1993 -- E. Stark (stark@cs.sunysb.edu)
+ * added patches for new "select" interface
+ *
+ * May 4, 1993 -- E. Stark (stark@cs.sunysb.edu)
+ * changed position of some spl()'s in mseread
+ *
+ * October 8, 1993 -- E. Stark (stark@cs.sunysb.edu)
+ * limit maximum negative x/y value to -127 to work around XFree problem
+ * that causes spurious button pushes.
+ */
+
+#include "mse.h"
+#if NMSE > 0
+#include "param.h"
+#include "proc.h"
+#include "user.h"
+#include "buf.h"
+#include "systm.h"
+#include "kernel.h"
+#include "ioctl.h"
+#include "tty.h"
+#include "uio.h"
+
+#include "i386/isa/isa_device.h"
+#include "i386/isa/icu.h"
+
+int mseprobe(), mseattach(), mseintr();
+
+struct isa_driver msedriver = {
+ mseprobe, mseattach, "mse"
+};
+
+/*
+ * Software control structure for mouse. The sc_enablemouse(),
+ * sc_disablemouse() and sc_getmouse() routines must be called spl'd().
+ */
+#define PROTOBYTES 5
+struct mse_softc {
+ int sc_flags;
+ int sc_mousetype;
+ pid_t sc_selp;
+ u_int sc_port;
+ void (*sc_enablemouse)();
+ void (*sc_disablemouse)();
+ void (*sc_getmouse)();
+ int sc_deltax;
+ int sc_deltay;
+ int sc_obuttons;
+ int sc_buttons;
+ int sc_bytesread;
+ u_char sc_bytes[PROTOBYTES];
+} mse_sc[NMSE];
+
+/* Flags */
+#define MSESC_OPEN 0x1
+#define MSESC_WANT 0x2
+
+/* and Mouse Types */
+#define MSE_LOGITECH 0x1
+#define MSE_ATIINPORT 0x2
+
+#define MSE_PORTA 0
+#define MSE_PORTB 1
+#define MSE_PORTC 2
+#define MSE_PORTD 3
+
+#define MSE_UNIT(dev) (minor(dev) >> 1)
+#define MSE_NBLOCKIO(dev) (minor(dev) & 0x1)
+
+/*
+ * Logitech bus mouse definitions
+ */
+#define MSE_SETUP 0x91 /* What does this mean? */
+#define MSE_HOLD 0x80
+#define MSE_RXLOW 0x00
+#define MSE_RXHIGH 0x20
+#define MSE_RYLOW 0x40
+#define MSE_RYHIGH 0x60
+#define MSE_DISINTR 0x10
+#define MSE_INTREN 0x00
+
+static int mse_probelogi();
+static void mse_enablelogi(), mse_disablelogi(), mse_getlogi();
+
+/*
+ * ATI Inport mouse definitions
+ */
+#define MSE_INPORT_RESET 0x80
+#define MSE_INPORT_STATUS 0x00
+#define MSE_INPORT_DX 0x01
+#define MSE_INPORT_DY 0x02
+#define MSE_INPORT_MODE 0x07
+#define MSE_INPORT_HOLD 0x20
+#define MSE_INPORT_INTREN 0x09
+
+static int mse_probeati();
+static void mse_enableati(), mse_disableati(), mse_getati();
+
+#define MSEPRI (PZERO + 3)
+
+/*
+ * Table of mouse types.
+ * Keep the Logitech last, since I haven't figured out how to probe it
+ * properly yet. (Someday I'll have the documentation.)
+ */
+struct mse_types {
+ int m_type; /* Type of bus mouse */
+ int (*m_probe)(); /* Probe routine to test for it */
+ void (*m_enable)(); /* Start routine */
+ void (*m_disable)(); /* Disable interrupts routine */
+ void (*m_get)(); /* and get mouse status */
+} mse_types[] = {
+ { MSE_ATIINPORT, mse_probeati, mse_enableati, mse_disableati, mse_getati },
+ { MSE_LOGITECH, mse_probelogi, mse_enablelogi, mse_disablelogi, mse_getlogi },
+ { 0, },
+};
+
+mseprobe(idp)
+ register struct isa_device *idp;
+{
+ register struct mse_softc *sc = &mse_sc[idp->id_unit];
+ register int i;
+
+ /*
+ * Check for each mouse type in the table.
+ */
+ i = 0;
+ while (mse_types[i].m_type) {
+ if ((*mse_types[i].m_probe)(idp)) {
+ sc->sc_mousetype = mse_types[i].m_type;
+ sc->sc_enablemouse = mse_types[i].m_enable;
+ sc->sc_disablemouse = mse_types[i].m_disable;
+ sc->sc_getmouse = mse_types[i].m_get;
+ return (1);
+ }
+ i++;
+ }
+ return (0);
+}
+
+mseattach(idp)
+ struct isa_device *idp;
+{
+ struct mse_softc *sc = &mse_sc[idp->id_unit];
+
+ sc->sc_port = idp->id_iobase;
+ return (1);
+}
+
+/*
+ * Exclusive open the mouse, initialize it and enable interrupts.
+ */
+mseopen(dev, flag)
+ dev_t dev;
+ int flag;
+{
+ register struct mse_softc *sc;
+ int s;
+
+ if (MSE_UNIT(dev) >= NMSE)
+ return (ENXIO);
+ sc = &mse_sc[MSE_UNIT(dev)];
+ if (sc->sc_flags & MSESC_OPEN)
+ return (EBUSY);
+ sc->sc_flags |= MSESC_OPEN;
+ sc->sc_obuttons = sc->sc_buttons = 0x7;
+ sc->sc_deltax = sc->sc_deltay = 0;
+ sc->sc_bytesread = PROTOBYTES;
+
+ /*
+ * Initialize mouse interface and enable interrupts.
+ */
+ s = spltty();
+ (*sc->sc_enablemouse)(sc->sc_port);
+ splx(s);
+ return (0);
+}
+
+/*
+ * mseclose: just turn off mouse innterrupts.
+ */
+mseclose(dev, flag)
+ int flag;
+{
+ struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
+ int s;
+
+ s = spltty();
+ (*sc->sc_disablemouse)(sc->sc_port);
+ sc->sc_flags &= ~MSESC_OPEN;
+ splx(s);
+ return(0);
+}
+
+/*
+ * mseread: return mouse info using the MSC serial protocol, but without
+ * using bytes 4 and 5.
+ * (Yes this is cheesy, but it makes the X386 server happy, so...)
+ */
+mseread(dev, uio)
+ dev_t dev;
+ struct uio *uio;
+{
+ register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
+ int xfer, s, error;
+
+ /*
+ * If there are no protocol bytes to be read, set up a new protocol
+ * packet.
+ */
+ s = spltty(); /* XXX Should be its own spl, but where is imlXX() */
+ if (sc->sc_bytesread >= PROTOBYTES) {
+ while (sc->sc_deltax == 0 && sc->sc_deltay == 0 &&
+ (sc->sc_obuttons ^ sc->sc_buttons) == 0) {
+ if (MSE_NBLOCKIO(dev)) {
+ splx(s);
+ return (0);
+ }
+ sc->sc_flags |= MSESC_WANT;
+ if (error = tsleep((caddr_t)sc, MSEPRI | PCATCH,
+ "mseread", 0)) {
+ splx(s);
+ return (error);
+ }
+ }
+
+ /*
+ * Generate protocol bytes.
+ * For some reason X386 expects 5 bytes but never uses
+ * the fourth or fifth?
+ */
+ sc->sc_bytes[0] = 0x80 | (sc->sc_buttons & ~0xf8);
+ if (sc->sc_deltax > 127)
+ sc->sc_deltax = 127;
+ if (sc->sc_deltax < -127)
+ sc->sc_deltax = -127;
+ sc->sc_deltay = -sc->sc_deltay; /* Otherwise mousey goes wrong way */
+ if (sc->sc_deltay > 127)
+ sc->sc_deltay = 127;
+ if (sc->sc_deltay < -127)
+ sc->sc_deltay = -127;
+ sc->sc_bytes[1] = sc->sc_deltax;
+ sc->sc_bytes[2] = sc->sc_deltay;
+ sc->sc_bytes[3] = sc->sc_bytes[4] = 0;
+ sc->sc_obuttons = sc->sc_buttons;
+ sc->sc_deltax = sc->sc_deltay = 0;
+ sc->sc_bytesread = 0;
+ }
+ splx(s);
+ xfer = MIN(uio->uio_resid, PROTOBYTES - sc->sc_bytesread);
+ if (error = uiomove(&sc->sc_bytes[sc->sc_bytesread], xfer, uio))
+ return (error);
+ sc->sc_bytesread += xfer;
+ return(0);
+}
+
+/*
+ * mseselect: check for mouse input to be processed.
+ */
+mseselect(dev, rw, p)
+ dev_t dev;
+ int rw;
+ struct proc *p;
+{
+ register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
+ int s;
+
+ s = spltty();
+ if (sc->sc_bytesread != PROTOBYTES || sc->sc_deltax != 0 ||
+ sc->sc_deltay != 0 || (sc->sc_obuttons ^ sc->sc_buttons) != 0) {
+ splx(s);
+ return (1);
+ }
+
+ /*
+ * Since this is an exclusive open device, any previous proc.
+ * pointer is trash now, so we can just assign it.
+ */
+ sc->sc_selp = p->p_pid;
+ splx(s);
+ return (0);
+}
+
+/*
+ * mseintr: update mouse status. sc_deltax and sc_deltay are accumulative.
+ */
+mseintr(unit)
+ int unit;
+{
+ register struct mse_softc *sc = &mse_sc[unit];
+ pid_t p;
+
+#ifdef DEBUG
+ static int mse_intrcnt = 0;
+ if((mse_intrcnt++ % 10000) == 0)
+ printf("mseintr\n");
+#endif /* DEBUG */
+ if ((sc->sc_flags & MSESC_OPEN) == 0)
+ return;
+
+ (*sc->sc_getmouse)(sc->sc_port, &sc->sc_deltax, &sc->sc_deltay, &sc->sc_buttons);
+
+ /*
+ * If mouse state has changed, wake up anyone wanting to know.
+ */
+ if (sc->sc_deltax != 0 || sc->sc_deltay != 0 ||
+ (sc->sc_obuttons ^ sc->sc_buttons) != 0) {
+ if (sc->sc_flags & MSESC_WANT) {
+ sc->sc_flags &= ~MSESC_WANT;
+ wakeup((caddr_t)sc);
+ }
+ if (sc->sc_selp) {
+ p = sc->sc_selp;
+ sc->sc_selp = (pid_t)0;
+ selwakeup(p, 0);
+ }
+ }
+}
+
+/*
+ * Routines for the Logitech mouse.
+ */
+/*
+ * Test for a Logitech bus mouse and return 1 if it is.
+ * (until I know how to use the signature port properly, just disable
+ * interrupts and return 1)
+ */
+static int
+mse_probelogi(idp)
+ register struct isa_device *idp;
+{
+
+ outb(idp->id_iobase + MSE_PORTB, 0x55);
+ if (inb(idp->id_iobase + MSE_PORTB) == 0x55) {
+ outb(idp->id_iobase + MSE_PORTB, 0xaa);
+ if (inb(idp->id_iobase + MSE_PORTB) == 0xaa)
+ return (1);
+ }
+ return (0);
+}
+
+/*
+ * Initialize Logitech mouse and enable interrupts.
+ */
+static void
+mse_enablelogi(port)
+ register u_int port;
+{
+ int dx, dy, but;
+
+ outb(port + MSE_PORTD, MSE_SETUP);
+ 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);
+}
+#endif /* NMSE */
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