553 lines
12 KiB
C
553 lines
12 KiB
C
/* $NetBSD: psm.c,v 1.16 2002/03/13 04:36:49 yamt Exp $ */
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/*-
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* Copyright (c) 1994 Charles M. 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: psm.c,v 1.16 2002/03/13 04:36:49 yamt Exp $");
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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 <sys/kthread.h>
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#include <machine/bus.h>
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#include <dev/ic/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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enum pms_protocol { PMS_UNKNOWN, PMS_STANDARD, PMS_SCROLL3, PMS_SCROLL5 };
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static const char *pms_protocol_name[] = {
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"unknown",
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"standard (no scroll wheel)",
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"scroll wheel (3 buttons)",
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"scroll wheel (5 buttons)",
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};
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struct pms_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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#ifndef PMS_DISABLE_POWERHOOK
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void *sc_powerhook; /* cookie from power hook */
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#endif /* !PMS_DISABLE_POWERHOOK */
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int inputstate;
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u_int buttons, oldbuttons; /* mouse button status */
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signed char dx, dy, dz;
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enum pms_protocol protocol;
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char inbuf[4];
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struct device *sc_wsmousedev;
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struct proc *sc_event_thread;
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int sc_reset_flag;
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unsigned long packet;
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struct timeval last, current;
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};
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int pmsprobe __P((struct device *, struct cfdata *, void *));
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void pmsattach __P((struct device *, struct device *, void *));
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void pmsinput __P((void *, int));
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struct cfattach pms_ca = {
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sizeof(struct pms_softc), pmsprobe, pmsattach,
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};
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static int pms_protocol __P((pckbc_tag_t, pckbc_slot_t));
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static void do_enable __P((struct pms_softc *));
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static void do_disable __P((struct pms_softc *));
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static void pms_reset_thread __P((void*));
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static void pms_spawn_reset_thread __P((void*));
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int pms_enable __P((void *));
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int pms_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
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void pms_disable __P((void *));
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#ifndef PMS_DISABLE_POWERHOOK
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void pms_power __P((int, void *));
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#endif /* !PMS_DISABLE_POWERHOOK */
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const struct wsmouse_accessops pms_accessops = {
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pms_enable,
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pms_ioctl,
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pms_disable,
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};
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static int
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pms_protocol(tag, slot)
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pckbc_tag_t tag;
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pckbc_slot_t slot;
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{
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u_char cmd[2], resp[1];
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int i, j, res;
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static const struct {
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int rates[3], response;
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enum pms_protocol p;
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} protocols[] = {
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{ { 200, 200, 80 }, 4, PMS_SCROLL5 },
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{ { 200, 100, 80 }, 3, PMS_SCROLL3 },
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{ { 0, 0, 0 }, 0, PMS_STANDARD },
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};
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for (j = 0; protocols[j].rates[0]; ++j) {
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cmd[0] = PMS_SET_SAMPLE;
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for (i = 0; i < 3; i++) {
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cmd[1] = protocols[j].rates[i];
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res = pckbc_poll_cmd(tag, slot, cmd, 2, 0, 0, 0);
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if (res)
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return 0;
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}
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cmd[0] = PMS_SEND_DEV_ID;
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res = pckbc_poll_cmd(tag, slot, cmd, 1, 1, resp, 0);
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if (res)
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return 0;
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if (resp[0] == protocols[j].response) {
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#ifdef PS2DEBUG
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printf("returning protocol %d\n", protocols[j].p);
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#endif
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return protocols[j].p;
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}
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}
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#ifdef PS2DEBUG
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printf("standard protocol\n");
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#endif
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return PMS_STANDARD;
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}
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int
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pmsprobe(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("pmsprobe: 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("pmsprobe: 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("pmsprobe: 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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pmsattach(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 pms_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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sc->last.tv_sec = sc->current.tv_sec = 0;
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sc->last.tv_usec = sc->current.tv_usec = 0;
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sc->packet = 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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#ifdef DEBUG
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if (res || resp[0] != PMS_RSTDONE || resp[1] != 0) {
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printf("pmsattach: reset error\n");
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return;
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}
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#endif
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res = pms_protocol(pa->pa_tag, pa->pa_slot);
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if (!res) {
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#ifdef DEBUG
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printf("pmsattach: error setting protocol\n");
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#endif
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sc->protocol = PMS_STANDARD;
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} else {
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sc->protocol = res;
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}
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printf(" %s\n", pms_protocol_name[sc->protocol]);
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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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pmsinput, sc, sc->sc_dev.dv_xname);
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a.accessops = &pms_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 pmsintr, because if this fails pms_enable() will
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* never be called, so pmsinput() 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("pmsattach: disable error\n");
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pckbc_slot_enable(sc->sc_kbctag, sc->sc_kbcslot, 0);
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sc->sc_reset_flag = 0;
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kthread_create(pms_spawn_reset_thread, sc);
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#ifndef PMS_DISABLE_POWERHOOK
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sc->sc_powerhook = powerhook_establish(pms_power, sc);
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#endif /* !PMS_DISABLE_POWERHOOK */
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}
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static void
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do_enable(sc)
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struct pms_softc *sc;
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{
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u_char cmd[1];
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int res;
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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("pms_enable: command error\n");
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res = pms_protocol(sc->sc_kbctag, sc->sc_kbcslot);
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if (res) {
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sc->protocol = res;
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#ifdef DEBUG
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printf("psm_enable: using %s protocol\n",
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pms_protocol_name[sc->protocol]);
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} else {
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printf("psm_enable: couldn't verify protocol\n");
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#endif
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}
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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("pms_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("pms_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("pms_enable: setup error3 (%d)\n", res);
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}
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#endif
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}
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static void
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do_disable(sc)
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struct pms_softc *sc;
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{
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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("pms_disable: command 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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pms_enable(v)
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void *v;
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{
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struct pms_softc *sc = v;
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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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do_enable(sc);
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return 0;
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}
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void
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pms_disable(v)
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void *v;
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{
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struct pms_softc *sc = v;
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do_disable(sc);
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sc->sc_enabled = 0;
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}
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#ifndef PMS_DISABLE_POWERHOOK
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void
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pms_power(why, v)
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int why;
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void *v;
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{
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struct pms_softc *sc = v;
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switch (why) {
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case PWR_SUSPEND:
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case PWR_STANDBY:
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if (sc->sc_enabled)
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do_disable(sc);
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break;
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case PWR_RESUME:
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if (sc->sc_enabled)
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do_enable(sc);
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case PWR_SOFTSUSPEND:
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case PWR_SOFTSTANDBY:
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case PWR_SOFTRESUME:
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break;
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}
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}
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#endif /* !PMS_DISABLE_POWERHOOK */
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int
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pms_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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struct pms_softc *sc = v;
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u_char kbcmd[2];
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int i;
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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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break;
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case WSMOUSEIO_SRES:
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i = (*(u_int *)data - 12) / 25;
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if (i < 0)
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i = 0;
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if (i > 3)
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i = 3;
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kbcmd[0] = PMS_SET_RES;
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kbcmd[1] = i;
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i = pckbc_enqueue_cmd(sc->sc_kbctag, sc->sc_kbcslot, kbcmd,
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2, 0, 1, 0);
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if (i)
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printf("pms_ioctl: SET_RES command error\n");
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break;
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default:
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return (-1);
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}
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return (0);
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}
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static void
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pms_spawn_reset_thread(arg)
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void *arg;
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{
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struct pms_softc *sc = arg;
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kthread_create1(pms_reset_thread, sc, &sc->sc_event_thread,
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"pms reset thread");
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}
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static void
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pms_reset_thread(arg)
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void *arg;
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{
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struct pms_softc *sc = arg;
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for (;;) {
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tsleep(&sc->sc_reset_flag, PWAIT, "pmsreset", 0);
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do_disable(sc);
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do_enable(sc);
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}
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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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#define PS24BUTMASK 0x10
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#define PS25BUTMASK 0x20
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void pmsinput(vsc, data)
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void *vsc;
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int data;
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{
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struct pms_softc *sc = vsc;
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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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microtime(&sc->current);
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if (sc->inputstate != 0) {
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struct timeval diff;
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timersub(&sc->current, &sc->last, &diff);
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if (diff.tv_sec > 0 || diff.tv_usec > 10000) {
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#if DEBUG
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printf("psm_input: unusual delay, spawning reset thread\n");
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#endif
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wakeup(&sc->sc_reset_flag);
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sc->inputstate = 0;
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return;
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}
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}
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sc->last = sc->current;
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switch (sc->inputstate) {
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case 0:
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sc->packet = (data & 0xff) << 24;
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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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#ifdef PS2DEBUG
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} else {
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printf("got data 0x%x\n", data);
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#endif
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}
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break;
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case 1:
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sc->packet |= (data & 0xff) << 16;
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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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sc->packet |= (data & 0xff) << 8;
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sc->dy = data;
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sc->dy = (sc->dy == -128) ? -127 : sc->dy;
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if (sc->protocol == PMS_STANDARD) {
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#ifdef PS2DEBUG
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printf("packet: 0x%08lx\n", packet);
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#endif
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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 || sc->dy || changed) {
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wsmouse_input(sc->sc_wsmousedev,
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sc->buttons, sc->dx, sc->dy, 0,
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WSMOUSE_INPUT_DELTA);
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}
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} else
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++sc->inputstate;
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break;
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case 3:
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sc->packet |= (data & 0xff);
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sc->inputstate = 0;
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if (sc->protocol == PMS_SCROLL5) {
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sc->dz = data & 0xf;
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if (sc->dz & 0x8)
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sc->dz -= 16;
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if (data & PS24BUTMASK)
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sc->buttons |= 0x8;
|
|
if (data & PS25BUTMASK)
|
|
sc->buttons |= 0x10;
|
|
} else {
|
|
sc->dz = data;
|
|
if (sc->dz == -128)
|
|
sc->dz = -127;
|
|
}
|
|
#ifdef PS2DEBUG
|
|
printf("packet: 0x%08lx\n", packet);
|
|
#endif
|
|
|
|
changed = (sc->buttons ^ sc->oldbuttons);
|
|
sc->oldbuttons = sc->buttons;
|
|
|
|
if (sc->dx || sc->dy || sc->dz || changed) {
|
|
wsmouse_input(sc->sc_wsmousedev,
|
|
sc->buttons, sc->dx, sc->dy, sc->dz,
|
|
WSMOUSE_INPUT_DELTA);
|
|
}
|
|
break;
|
|
}
|
|
}
|