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-rw-r--r--sys/dev/mse/mse.c771
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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.
+ *
+ * $FreeBSD$
+ */
+/*
+ * 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:
+ * Sep 6, 1994 -- Lars Fredriksen(fredriks@mcs.com)
+ * improved probe based on input from Logitech.
+ *
+ * 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 <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/poll.h>
+#include <sys/select.h>
+#include <sys/uio.h>
+
+#include <machine/clock.h>
+#include <machine/mouse.h>
+
+#include <i386/isa/isa_device.h>
+
+/* driver configuration flags (config) */
+#define MSE_CONFIG_ACCEL 0x00f0 /* acceleration factor */
+#define MSE_CONFIG_FLAGS (MSE_CONFIG_ACCEL)
+
+static int mseprobe(struct isa_device *);
+static int mseattach(struct isa_device *);
+
+struct isa_driver msedriver = {
+ mseprobe, mseattach, "mse"
+};
+
+static d_open_t mseopen;
+static d_close_t mseclose;
+static d_read_t mseread;
+static d_ioctl_t mseioctl;
+static d_poll_t msepoll;
+
+#define CDEV_MAJOR 27
+static struct cdevsw mse_cdevsw = {
+ /* open */ mseopen,
+ /* close */ mseclose,
+ /* read */ mseread,
+ /* write */ nowrite,
+ /* ioctl */ mseioctl,
+ /* poll */ msepoll,
+ /* mmap */ nommap,
+ /* strategy */ nostrategy,
+ /* name */ "mse",
+ /* maj */ CDEV_MAJOR,
+ /* dump */ nodump,
+ /* psize */ nopsize,
+ /* flags */ 0,
+ /* bmaj */ -1
+};
+
+static ointhand2_t mseintr;
+
+/*
+ * Software control structure for mouse. The sc_enablemouse(),
+ * sc_disablemouse() and sc_getmouse() routines must be called spl'd().
+ */
+static struct mse_softc {
+ int sc_flags;
+ int sc_mousetype;
+ struct selinfo sc_selp;
+ u_int sc_port;
+ void (*sc_enablemouse) __P((u_int port));
+ void (*sc_disablemouse) __P((u_int port));
+ void (*sc_getmouse) __P((u_int port, int *dx, int *dy, int *but));
+ int sc_deltax;
+ int sc_deltay;
+ int sc_obuttons;
+ int sc_buttons;
+ int sc_bytesread;
+ u_char sc_bytes[MOUSE_SYS_PACKETSIZE];
+ mousehw_t hw;
+ mousemode_t mode;
+ mousestatus_t status;
+} mse_sc[NMSE];
+
+/* Flags */
+#define MSESC_OPEN 0x1
+#define MSESC_WANT 0x2
+
+/* and Mouse Types */
+#define MSE_NONE 0 /* don't move this! */
+#define MSE_LOGITECH 0x1
+#define MSE_ATIINPORT 0x2
+#define MSE_LOGI_SIG 0xA5
+
+#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? */
+ /* The definition for the control port */
+ /* is as follows: */
+
+ /* D7 = Mode set flag (1 = active) */
+ /* D6,D5 = Mode selection (port A) */
+ /* 00 = Mode 0 = Basic I/O */
+ /* 01 = Mode 1 = Strobed I/O */
+ /* 10 = Mode 2 = Bi-dir bus */
+ /* D4 = Port A direction (1 = input)*/
+ /* D3 = Port C (upper 4 bits) */
+ /* direction. (1 = input) */
+ /* D2 = Mode selection (port B & C) */
+ /* 0 = Mode 0 = Basic I/O */
+ /* 1 = Mode 1 = Strobed I/O */
+ /* D1 = Port B direction (1 = input)*/
+ /* D0 = Port C (lower 4 bits) */
+ /* direction. (1 = input) */
+
+ /* So 91 means Basic I/O on all 3 ports,*/
+ /* Port A is an input port, B is an */
+ /* output port, C is split with upper */
+ /* 4 bits being an output port and lower*/
+ /* 4 bits an input port, and enable the */
+ /* sucker. */
+ /* Courtesy Intel 8255 databook. Lars */
+#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 __P((struct isa_device *idp));
+static void mse_disablelogi __P((u_int port));
+static void mse_getlogi __P((u_int port, int *dx, int *dy, int *but));
+static void mse_enablelogi __P((u_int port));
+
+/*
+ * 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 __P((struct isa_device *idp));
+static void mse_enableati __P((u_int port));
+static void mse_disableati __P((u_int port));
+static void mse_getati __P((u_int port, int *dx, int *dy, int *but));
+
+#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.)
+ */
+static struct mse_types {
+ int m_type; /* Type of bus mouse */
+ int (*m_probe) __P((struct isa_device *idp));
+ /* Probe routine to test for it */
+ void (*m_enable) __P((u_int port));
+ /* Start routine */
+ void (*m_disable) __P((u_int port));
+ /* Disable interrupts routine */
+ void (*m_get) __P((u_int port, int *dx, int *dy, int *but));
+ /* and get mouse status */
+ mousehw_t m_hw; /* buttons iftype type model hwid */
+ mousemode_t m_mode; /* proto rate res accel level size mask */
+} mse_types[] = {
+ { MSE_ATIINPORT,
+ mse_probeati, mse_enableati, mse_disableati, mse_getati,
+ { 2, MOUSE_IF_INPORT, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, },
+ { MOUSE_PROTO_INPORT, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE,
+ { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, },
+ { MSE_LOGITECH,
+ mse_probelogi, mse_enablelogi, mse_disablelogi, mse_getlogi,
+ { 2, MOUSE_IF_BUS, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, },
+ { MOUSE_PROTO_BUS, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE,
+ { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, },
+ { 0, },
+};
+
+int
+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;
+ sc->hw = mse_types[i].m_hw;
+ sc->mode = mse_types[i].m_mode;
+ return (1);
+ }
+ i++;
+ }
+ return (0);
+}
+
+int
+mseattach(idp)
+ struct isa_device *idp;
+{
+ int unit = idp->id_unit;
+ struct mse_softc *sc = &mse_sc[unit];
+
+ idp->id_ointr = mseintr;
+ sc->sc_port = idp->id_iobase;
+ sc->mode.accelfactor = (idp->id_flags & MSE_CONFIG_ACCEL) >> 4;
+ make_dev(&mse_cdevsw, unit << 1, 0, 0, 0600, "mse%d", unit);
+ make_dev(&mse_cdevsw, (unit<<1)+1, 0, 0, 0600, "nmse%d", unit);
+ return (1);
+}
+
+/*
+ * Exclusive open the mouse, initialize it and enable interrupts.
+ */
+static int
+mseopen(dev, flags, fmt, p)
+ dev_t dev;
+ int flags;
+ int fmt;
+ struct proc *p;
+{
+ register struct mse_softc *sc;
+ int s;
+
+ if (MSE_UNIT(dev) >= NMSE)
+ return (ENXIO);
+ sc = &mse_sc[MSE_UNIT(dev)];
+ if (sc->sc_mousetype == MSE_NONE)
+ return (ENXIO);
+ if (sc->sc_flags & MSESC_OPEN)
+ return (EBUSY);
+ sc->sc_flags |= MSESC_OPEN;
+ sc->sc_obuttons = sc->sc_buttons = MOUSE_MSC_BUTTONS;
+ sc->sc_deltax = sc->sc_deltay = 0;
+ sc->sc_bytesread = sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
+ sc->mode.level = 0;
+ sc->status.flags = 0;
+ sc->status.button = sc->status.obutton = 0;
+ sc->status.dx = sc->status.dy = sc->status.dz = 0;
+
+ /*
+ * Initialize mouse interface and enable interrupts.
+ */
+ s = spltty();
+ (*sc->sc_enablemouse)(sc->sc_port);
+ splx(s);
+ return (0);
+}
+
+/*
+ * mseclose: just turn off mouse innterrupts.
+ */
+static int
+mseclose(dev, flags, fmt, p)
+ dev_t dev;
+ int flags;
+ int fmt;
+ struct proc *p;
+{
+ 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...)
+ */
+static int
+mseread(dev, uio, ioflag)
+ dev_t dev;
+ struct uio *uio;
+ int ioflag;
+{
+ 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 >= sc->mode.packetsize) {
+ 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;
+ error = tsleep((caddr_t)sc, MSEPRI | PCATCH,
+ "mseread", 0);
+ if (error) {
+ 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] = sc->mode.syncmask[1]
+ | (sc->sc_buttons & ~sc->mode.syncmask[0]);
+ 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_bytes[5] = sc->sc_bytes[6] = 0;
+ sc->sc_bytes[7] = MOUSE_SYS_EXTBUTTONS;
+ sc->sc_obuttons = sc->sc_buttons;
+ sc->sc_deltax = sc->sc_deltay = 0;
+ sc->sc_bytesread = 0;
+ }
+ splx(s);
+ xfer = min(uio->uio_resid, sc->mode.packetsize - sc->sc_bytesread);
+ error = uiomove(&sc->sc_bytes[sc->sc_bytesread], xfer, uio);
+ if (error)
+ return (error);
+ sc->sc_bytesread += xfer;
+ return(0);
+}
+
+/*
+ * mseioctl: process ioctl commands.
+ */
+static int
+mseioctl(dev, cmd, addr, flag, p)
+ dev_t dev;
+ u_long cmd;
+ caddr_t addr;
+ int flag;
+ struct proc *p;
+{
+ register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
+ mousestatus_t status;
+ int err = 0;
+ int s;
+
+ switch (cmd) {
+
+ case MOUSE_GETHWINFO:
+ s = spltty();
+ *(mousehw_t *)addr = sc->hw;
+ if (sc->mode.level == 0)
+ ((mousehw_t *)addr)->model = MOUSE_MODEL_GENERIC;
+ splx(s);
+ break;
+
+ case MOUSE_GETMODE:
+ s = spltty();
+ *(mousemode_t *)addr = sc->mode;
+ switch (sc->mode.level) {
+ case 0:
+ break;
+ case 1:
+ ((mousemode_t *)addr)->protocol = MOUSE_PROTO_SYSMOUSE;
+ ((mousemode_t *)addr)->syncmask[0] = MOUSE_SYS_SYNCMASK;
+ ((mousemode_t *)addr)->syncmask[1] = MOUSE_SYS_SYNC;
+ break;
+ }
+ splx(s);
+ break;
+
+ case MOUSE_SETMODE:
+ switch (((mousemode_t *)addr)->level) {
+ case 0:
+ case 1:
+ break;
+ default:
+ return (EINVAL);
+ }
+ if (((mousemode_t *)addr)->accelfactor < -1)
+ return (EINVAL);
+ else if (((mousemode_t *)addr)->accelfactor >= 0)
+ sc->mode.accelfactor =
+ ((mousemode_t *)addr)->accelfactor;
+ sc->mode.level = ((mousemode_t *)addr)->level;
+ switch (sc->mode.level) {
+ case 0:
+ sc->sc_bytesread = sc->mode.packetsize
+ = MOUSE_MSC_PACKETSIZE;
+ break;
+ case 1:
+ sc->sc_bytesread = sc->mode.packetsize
+ = MOUSE_SYS_PACKETSIZE;
+ break;
+ }
+ break;
+
+ case MOUSE_GETLEVEL:
+ *(int *)addr = sc->mode.level;
+ break;
+
+ case MOUSE_SETLEVEL:
+ switch (*(int *)addr) {
+ case 0:
+ sc->mode.level = *(int *)addr;
+ sc->sc_bytesread = sc->mode.packetsize
+ = MOUSE_MSC_PACKETSIZE;
+ break;
+ case 1:
+ sc->mode.level = *(int *)addr;
+ sc->sc_bytesread = sc->mode.packetsize
+ = MOUSE_SYS_PACKETSIZE;
+ break;
+ default:
+ return (EINVAL);
+ }
+ break;
+
+ case MOUSE_GETSTATUS:
+ s = spltty();
+ status = sc->status;
+ sc->status.flags = 0;
+ sc->status.obutton = sc->status.button;
+ sc->status.button = 0;
+ sc->status.dx = 0;
+ sc->status.dy = 0;
+ sc->status.dz = 0;
+ splx(s);
+ *(mousestatus_t *)addr = status;
+ break;
+
+ case MOUSE_READSTATE:
+ case MOUSE_READDATA:
+ return (ENODEV);
+
+#if (defined(MOUSE_GETVARS))
+ case MOUSE_GETVARS:
+ case MOUSE_SETVARS:
+ return (ENODEV);
+#endif
+
+ default:
+ return (ENOTTY);
+ }
+ return (err);
+}
+
+/*
+ * msepoll: check for mouse input to be processed.
+ */
+static int
+msepoll(dev, events, p)
+ dev_t dev;
+ int events;
+ struct proc *p;
+{
+ register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
+ int s;
+ int revents = 0;
+
+ s = spltty();
+ if (events & (POLLIN | POLLRDNORM)) {
+ if (sc->sc_bytesread != sc->mode.packetsize ||
+ sc->sc_deltax != 0 || sc->sc_deltay != 0 ||
+ (sc->sc_obuttons ^ sc->sc_buttons) != 0)
+ revents |= events & (POLLIN | POLLRDNORM);
+ else {
+ /*
+ * Since this is an exclusive open device, any previous
+ * proc pointer is trash now, so we can just assign it.
+ */
+ selrecord(p, &sc->sc_selp);
+ }
+ }
+ splx(s);
+ return (revents);
+}
+
+/*
+ * mseintr: update mouse status. sc_deltax and sc_deltay are accumulative.
+ */
+static void
+mseintr(unit)
+ int unit;
+{
+ /*
+ * the table to turn MouseSystem button bits (MOUSE_MSC_BUTTON?UP)
+ * into `mousestatus' button bits (MOUSE_BUTTON?DOWN).
+ */
+ static int butmap[8] = {
+ 0,
+ MOUSE_BUTTON3DOWN,
+ MOUSE_BUTTON2DOWN,
+ MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
+ MOUSE_BUTTON1DOWN,
+ MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
+ MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
+ MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
+ };
+ register struct mse_softc *sc = &mse_sc[unit];
+ int dx, dy, but;
+ int sign;
+
+#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, &dx, &dy, &but);
+ if (sc->mode.accelfactor > 0) {
+ sign = (dx < 0);
+ dx = dx * dx / sc->mode.accelfactor;
+ if (dx == 0)
+ dx = 1;
+ if (sign)
+ dx = -dx;
+ sign = (dy < 0);
+ dy = dy * dy / sc->mode.accelfactor;
+ if (dy == 0)
+ dy = 1;
+ if (sign)
+ dy = -dy;
+ }
+ sc->sc_deltax += dx;
+ sc->sc_deltay += dy;
+ sc->sc_buttons = but;
+
+ but = butmap[~but & MOUSE_MSC_BUTTONS];
+ sc->status.dx += dx;
+ sc->status.dy += dy;
+ sc->status.flags |= ((dx || dy) ? MOUSE_POSCHANGED : 0)
+ | (sc->status.button ^ but);
+ sc->status.button = but;
+
+ /*
+ * 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);
+ }
+ selwakeup(&sc->sc_selp);
+ }
+}
+
+/*
+ * 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;
+{
+
+ int sig;
+
+ outb(idp->id_iobase + MSE_PORTD, MSE_SETUP);
+ /* set the signature port */
+ outb(idp->id_iobase + MSE_PORTB, MSE_LOGI_SIG);
+
+ DELAY(30000); /* 30 ms delay */
+ sig = inb(idp->id_iobase + MSE_PORTB) & 0xFF;
+ if (sig == MSE_LOGI_SIG) {
+ outb(idp->id_iobase + MSE_PORTC, MSE_DISINTR);
+ return(1);
+ } else {
+ if (bootverbose)
+ printf("mse%d: wrong signature %x\n",idp->id_unit,sig);
+ 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) & MOUSE_MSC_BUTTONS;
+ 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) & MOUSE_MSC_BUTTONS;
+ 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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