306 lines
6.7 KiB
C
306 lines
6.7 KiB
C
/* $NetBSD: psm.c,v 1.5 1998/07/28 20:18:36 drochner Exp $ */
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/*-
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* Copyright (c) 1994 Charles Hannum.
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* Copyright (c) 1992, 1993 Erik Forsberg.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL I BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/pckbcvar.h>
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#include <dev/pckbc/psmreg.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wsmousevar.h>
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struct psm_softc { /* driver status information */
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struct device sc_dev;
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pckbc_tag_t sc_kbctag;
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int sc_kbcslot;
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int sc_enabled; /* input enabled? */
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int inputstate;
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u_int buttons, oldbuttons; /* mouse button status */
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signed char dx;
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struct device *sc_wsmousedev;
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};
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int psmprobe __P((struct device *, struct cfdata *, void *));
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void psmattach __P((struct device *, struct device *, void *));
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void psminput __P((void *, int));
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struct cfattach psm_ca = {
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sizeof(struct psm_softc), psmprobe, psmattach,
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};
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int psm_enable __P((void *));
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int psm_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
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void psm_disable __P((void *));
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const struct wsmouse_accessops psm_accessops = {
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psm_enable,
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psm_ioctl,
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psm_disable,
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};
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int
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psmprobe(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pckbc_attach_args *pa = aux;
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u_char cmd[1], resp[2];
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int res;
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if (pa->pa_slot != PCKBC_AUX_SLOT)
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return (0);
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/* Flush any garbage. */
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pckbc_flush(pa->pa_tag, pa->pa_slot);
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/* reset the device */
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cmd[0] = PMS_RESET;
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res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 2, resp, 1);
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if (res) {
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#ifdef DEBUG
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printf("psmprobe: reset error %d\n", res);
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#endif
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return (0);
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}
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if (resp[0] != PMS_RSTDONE) {
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printf("psmprobe: reset response 0x%x\n", resp[0]);
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return (0);
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}
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/* get type number (0 = mouse) */
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if (resp[1] != 0) {
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#ifdef DEBUG
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printf("psmprobe: type 0x%x\n", resp[1]);
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#endif
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return (0);
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}
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return (10);
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}
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void
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psmattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct psm_softc *sc = (void *)self;
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struct pckbc_attach_args *pa = aux;
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struct wsmousedev_attach_args a;
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u_char cmd[1], resp[2];
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int res;
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sc->sc_kbctag = pa->pa_tag;
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sc->sc_kbcslot = pa->pa_slot;
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printf("\n");
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/* Flush any garbage. */
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pckbc_flush(pa->pa_tag, pa->pa_slot);
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/* reset the device */
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cmd[0] = PMS_RESET;
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res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 2, resp, 1);
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#ifdef DEBUG
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if (res || resp[0] != PMS_RSTDONE || resp[1] != 0) {
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printf("psmattach: reset error\n");
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return;
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}
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#endif
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sc->inputstate = 0;
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sc->oldbuttons = 0;
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pckbc_set_inputhandler(sc->sc_kbctag, sc->sc_kbcslot,
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psminput, sc);
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a.accessops = &psm_accessops;
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a.accesscookie = sc;
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/*
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* Attach the wsmouse, saving a handle to it.
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* Note that we don't need to check this pointer against NULL
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* here or in psmintr, because if this fails psm_enable() will
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* never be called, so psmintr() will never be called.
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*/
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sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
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/* no interrupts until enabled */
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cmd[0] = PMS_DEV_DISABLE;
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res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 0, 0, 0);
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if (res)
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printf("psmattach: disable error\n");
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pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0);
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}
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int
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psm_enable(v)
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void *v;
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{
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struct psm_softc *sc = v;
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u_char cmd[1];
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int res;
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if (sc->sc_enabled)
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return EBUSY;
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sc->sc_enabled = 1;
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sc->inputstate = 0;
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sc->oldbuttons = 0;
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pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 1);
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cmd[0] = PMS_DEV_ENABLE;
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res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, 1, 0, 1, 0);
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if (res)
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printf("psm_enable: command error\n");
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#if 0
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{
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u_char scmd[2];
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scmd[0] = PMS_SET_RES;
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scmd[1] = 3; /* 8 counts/mm */
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res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
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2, 0, 1, 0);
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if (res)
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printf("psm_enable: setup error1 (%d)\n", res);
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scmd[0] = PMS_SET_SCALE21;
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res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
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1, 0, 1, 0);
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if (res)
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printf("psm_enable: setup error2 (%d)\n", res);
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scmd[0] = PMS_SET_SAMPLE;
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scmd[1] = 100; /* 100 samples/sec */
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res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
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2, 0, 1, 0);
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if (res)
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printf("psm_enable: setup error3 (%d)\n", res);
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}
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#endif
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return 0;
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}
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void
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psm_disable(v)
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void *v;
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{
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struct psm_softc *sc = v;
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u_char cmd[1];
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int res;
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cmd[0] = PMS_DEV_DISABLE;
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res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, 1, 0, 1, 0);
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if (res)
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printf("psm_disable: command error\n");
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pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0);
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sc->sc_enabled = 0;
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}
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int
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psm_ioctl(v, cmd, data, flag, p)
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void *v;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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#if 0
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struct psm_softc *sc = v;
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#endif
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switch (cmd) {
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case WSMOUSEIO_GTYPE:
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*(u_int *)data = WSMOUSE_TYPE_PS2;
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return (0);
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}
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return (-1);
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}
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/* Masks for the first byte of a packet */
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#define PS2LBUTMASK 0x01
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#define PS2RBUTMASK 0x02
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#define PS2MBUTMASK 0x04
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void psminput(vsc, data)
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void *vsc;
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int data;
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{
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struct psm_softc *sc = vsc;
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signed char dy;
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u_int changed;
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if (!sc->sc_enabled) {
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/* Interrupts are not expected. Discard the byte. */
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return;
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}
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switch (sc->inputstate) {
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case 0:
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if ((data & 0xc0) == 0) { /* no ovfl, bit 3 == 1 too? */
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sc->buttons = ((data & PS2LBUTMASK) ? 0x1 : 0) |
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((data & PS2MBUTMASK) ? 0x2 : 0) |
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((data & PS2RBUTMASK) ? 0x4 : 0);
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++sc->inputstate;
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}
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break;
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case 1:
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sc->dx = data;
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/* Bounding at -127 avoids a bug in XFree86. */
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sc->dx = (sc->dx == -128) ? -127 : sc->dx;
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++sc->inputstate;
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break;
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case 2:
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dy = data;
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dy = (dy == -128) ? -127 : dy;
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sc->inputstate = 0;
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changed = (sc->buttons ^ sc->oldbuttons);
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sc->oldbuttons = sc->buttons;
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if (sc->dx || dy || changed)
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wsmouse_input(sc->sc_wsmousedev,
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sc->buttons, sc->dx, dy, 0);
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break;
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}
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return;
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}
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