NetBSD/sys/dev/pckbc/psm.c

306 lines
6.7 KiB
C

/* $NetBSD: psm.c,v 1.6 1998/08/15 03:02:47 mycroft Exp $ */
/*-
* Copyright (c) 1994 Charles M. Hannum.
* Copyright (c) 1992, 1993 Erik Forsberg.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL I BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <dev/isa/isavar.h>
#include <dev/isa/pckbcvar.h>
#include <dev/pckbc/psmreg.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsmousevar.h>
struct psm_softc { /* driver status information */
struct device sc_dev;
pckbc_tag_t sc_kbctag;
int sc_kbcslot;
int sc_enabled; /* input enabled? */
int inputstate;
u_int buttons, oldbuttons; /* mouse button status */
signed char dx;
struct device *sc_wsmousedev;
};
int psmprobe __P((struct device *, struct cfdata *, void *));
void psmattach __P((struct device *, struct device *, void *));
void psminput __P((void *, int));
struct cfattach psm_ca = {
sizeof(struct psm_softc), psmprobe, psmattach,
};
int psm_enable __P((void *));
int psm_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
void psm_disable __P((void *));
const struct wsmouse_accessops psm_accessops = {
psm_enable,
psm_ioctl,
psm_disable,
};
int
psmprobe(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pckbc_attach_args *pa = aux;
u_char cmd[1], resp[2];
int res;
if (pa->pa_slot != PCKBC_AUX_SLOT)
return (0);
/* Flush any garbage. */
pckbc_flush(pa->pa_tag, pa->pa_slot);
/* reset the device */
cmd[0] = PMS_RESET;
res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 2, resp, 1);
if (res) {
#ifdef DEBUG
printf("psmprobe: reset error %d\n", res);
#endif
return (0);
}
if (resp[0] != PMS_RSTDONE) {
printf("psmprobe: reset response 0x%x\n", resp[0]);
return (0);
}
/* get type number (0 = mouse) */
if (resp[1] != 0) {
#ifdef DEBUG
printf("psmprobe: type 0x%x\n", resp[1]);
#endif
return (0);
}
return (10);
}
void
psmattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct psm_softc *sc = (void *)self;
struct pckbc_attach_args *pa = aux;
struct wsmousedev_attach_args a;
u_char cmd[1], resp[2];
int res;
sc->sc_kbctag = pa->pa_tag;
sc->sc_kbcslot = pa->pa_slot;
printf("\n");
/* Flush any garbage. */
pckbc_flush(pa->pa_tag, pa->pa_slot);
/* reset the device */
cmd[0] = PMS_RESET;
res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 2, resp, 1);
#ifdef DEBUG
if (res || resp[0] != PMS_RSTDONE || resp[1] != 0) {
printf("psmattach: reset error\n");
return;
}
#endif
sc->inputstate = 0;
sc->oldbuttons = 0;
pckbc_set_inputhandler(sc->sc_kbctag, sc->sc_kbcslot,
psminput, sc);
a.accessops = &psm_accessops;
a.accesscookie = sc;
/*
* Attach the wsmouse, saving a handle to it.
* Note that we don't need to check this pointer against NULL
* here or in psmintr, because if this fails psm_enable() will
* never be called, so psmintr() will never be called.
*/
sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
/* no interrupts until enabled */
cmd[0] = PMS_DEV_DISABLE;
res = pckbc_poll_cmd(pa->pa_tag, pa->pa_slot, cmd, 1, 0, 0, 0);
if (res)
printf("psmattach: disable error\n");
pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0);
}
int
psm_enable(v)
void *v;
{
struct psm_softc *sc = v;
u_char cmd[1];
int res;
if (sc->sc_enabled)
return EBUSY;
sc->sc_enabled = 1;
sc->inputstate = 0;
sc->oldbuttons = 0;
pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 1);
cmd[0] = PMS_DEV_ENABLE;
res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, 1, 0, 1, 0);
if (res)
printf("psm_enable: command error\n");
#if 0
{
u_char scmd[2];
scmd[0] = PMS_SET_RES;
scmd[1] = 3; /* 8 counts/mm */
res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
2, 0, 1, 0);
if (res)
printf("psm_enable: setup error1 (%d)\n", res);
scmd[0] = PMS_SET_SCALE21;
res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
1, 0, 1, 0);
if (res)
printf("psm_enable: setup error2 (%d)\n", res);
scmd[0] = PMS_SET_SAMPLE;
scmd[1] = 100; /* 100 samples/sec */
res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, scmd,
2, 0, 1, 0);
if (res)
printf("psm_enable: setup error3 (%d)\n", res);
}
#endif
return 0;
}
void
psm_disable(v)
void *v;
{
struct psm_softc *sc = v;
u_char cmd[1];
int res;
cmd[0] = PMS_DEV_DISABLE;
res = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, cmd, 1, 0, 1, 0);
if (res)
printf("psm_disable: command error\n");
pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0);
sc->sc_enabled = 0;
}
int
psm_ioctl(v, cmd, data, flag, p)
void *v;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
#if 0
struct psm_softc *sc = v;
#endif
switch (cmd) {
case WSMOUSEIO_GTYPE:
*(u_int *)data = WSMOUSE_TYPE_PS2;
return (0);
}
return (-1);
}
/* Masks for the first byte of a packet */
#define PS2LBUTMASK 0x01
#define PS2RBUTMASK 0x02
#define PS2MBUTMASK 0x04
void psminput(vsc, data)
void *vsc;
int data;
{
struct psm_softc *sc = vsc;
signed char dy;
u_int changed;
if (!sc->sc_enabled) {
/* Interrupts are not expected. Discard the byte. */
return;
}
switch (sc->inputstate) {
case 0:
if ((data & 0xc0) == 0) { /* no ovfl, bit 3 == 1 too? */
sc->buttons = ((data & PS2LBUTMASK) ? 0x1 : 0) |
((data & PS2MBUTMASK) ? 0x2 : 0) |
((data & PS2RBUTMASK) ? 0x4 : 0);
++sc->inputstate;
}
break;
case 1:
sc->dx = data;
/* Bounding at -127 avoids a bug in XFree86. */
sc->dx = (sc->dx == -128) ? -127 : sc->dx;
++sc->inputstate;
break;
case 2:
dy = data;
dy = (dy == -128) ? -127 : dy;
sc->inputstate = 0;
changed = (sc->buttons ^ sc->oldbuttons);
sc->oldbuttons = sc->buttons;
if (sc->dx || dy || changed)
wsmouse_input(sc->sc_wsmousedev,
sc->buttons, sc->dx, dy, 0);
break;
}
return;
}