/* $OpenBSD: lms.c,v 1.18 2002/03/14 01:26:33 millert Exp $ */ /* $NetBSD: lms.c,v 1.38 2000/01/08 02:57:25 takemura Exp $ */ /*- * Copyright (c) 1993, 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 #include #include #include #include #include #include #include #include #define LMS_DATA 0 /* offset for data port, read-only */ #define LMS_SIGN 1 /* offset for signature port, read-write */ #define LMS_INTR 2 /* offset for interrupt port, read-only */ #define LMS_CNTRL 2 /* offset for control port, write-only */ #define LMS_CONFIG 3 /* for configuration port, read-write */ #define LMS_NPORTS 4 struct lms_softc { /* driver status information */ struct device sc_dev; void *sc_ih; bus_space_tag_t sc_iot; /* bus i/o space identifier */ bus_space_handle_t sc_ioh; /* bus i/o handle */ int sc_enabled; /* device is open */ int oldbuttons; /* mouse button status */ struct device *sc_wsmousedev; }; int lmsprobe(struct device *, void *, void *); void lmsattach(struct device *, struct device *, void *); int lmsintr(void *); struct cfattach lms_ca = { sizeof(struct lms_softc), lmsprobe, lmsattach }; int lms_enable(void *); int lms_ioctl(void *, u_long, caddr_t, int, struct proc *); void lms_disable(void *); const struct wsmouse_accessops lms_accessops = { lms_enable, lms_ioctl, lms_disable, }; int lmsprobe(parent, match, aux) struct device *parent; void *match; void *aux; { struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int rv; /* Disallow wildcarded i/o base. */ if (ia->ia_iobase == IOBASEUNK) return 0; /* Map the i/o space. */ if (bus_space_map(iot, ia->ia_iobase, LMS_NPORTS, 0, &ioh)) return 0; rv = 0; /* Configure and check for port present. */ bus_space_write_1(iot, ioh, LMS_CONFIG, 0x91); delay(10); bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c); delay(10); if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c) goto out; bus_space_write_1(iot, ioh, LMS_SIGN, 0x50); delay(10); if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50) goto out; /* Disable interrupts. */ bus_space_write_1(iot, ioh, LMS_CNTRL, 0x10); rv = 1; ia->ia_iosize = LMS_NPORTS; ia->ia_msize = 0; out: bus_space_unmap(iot, ioh, LMS_NPORTS); return rv; } void lmsattach(parent, self, aux) struct device *parent, *self; void *aux; { struct lms_softc *sc = (void *)self; struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; struct wsmousedev_attach_args a; printf("\n"); if (bus_space_map(iot, ia->ia_iobase, LMS_NPORTS, 0, &ioh)) { printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); return; } /* Other initialization was done by lmsprobe. */ sc->sc_iot = iot; sc->sc_ioh = ioh; sc->sc_enabled = 0; sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_PULSE, IPL_TTY, lmsintr, sc, sc->sc_dev.dv_xname); a.accessops = &lms_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 lms_enable() will * never be called, so lmsintr() will never be called. */ sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint); } int lms_enable(v) void *v; { struct lms_softc *sc = v; if (sc->sc_enabled) return EBUSY; sc->sc_enabled = 1; sc->oldbuttons = 0; /* Enable interrupts. */ bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0); return 0; } void lms_disable(v) void *v; { struct lms_softc *sc = v; /* Disable interrupts. */ bus_space_write_1(sc->sc_iot, sc->sc_ioh, LMS_CNTRL, 0x10); sc->sc_enabled = 0; } int lms_ioctl(v, cmd, data, flag, p) void *v; u_long cmd; caddr_t data; int flag; struct proc *p; { #if 0 struct lms_softc *sc = v; #endif switch (cmd) { case WSMOUSEIO_GTYPE: *(u_int *)data = WSMOUSE_TYPE_LMS; return (0); } return (-1); } int lmsintr(arg) void *arg; { struct lms_softc *sc = arg; bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; u_char hi, lo; signed char dx, dy; u_int buttons; int changed; if (!sc->sc_enabled) /* Interrupts are not expected. */ return 0; bus_space_write_1(iot, ioh, LMS_CNTRL, 0xab); hi = bus_space_read_1(iot, ioh, LMS_DATA); bus_space_write_1(iot, ioh, LMS_CNTRL, 0x90); lo = bus_space_read_1(iot, ioh, LMS_DATA); dx = ((hi & 0x0f) << 4) | (lo & 0x0f); /* Bounding at -127 avoids a bug in XFree86. */ dx = (dx == -128) ? -127 : dx; bus_space_write_1(iot, ioh, LMS_CNTRL, 0xf0); hi = bus_space_read_1(iot, ioh, LMS_DATA); bus_space_write_1(iot, ioh, LMS_CNTRL, 0xd0); lo = bus_space_read_1(iot, ioh, LMS_DATA); dy = ((hi & 0x0f) << 4) | (lo & 0x0f); dy = (dy == -128) ? 127 : -dy; bus_space_write_1(iot, ioh, LMS_CNTRL, 0); buttons = ((hi & 0x80) ? 0 : 0x1) | ((hi & 0x40) ? 0 : 0x2) | ((hi & 0x20) ? 0 : 0x4); changed = (buttons ^ sc->oldbuttons); sc->oldbuttons = buttons; if (dx || dy || changed) wsmouse_input(sc->sc_wsmousedev, buttons, dx, dy, 0, WSMOUSE_INPUT_DELTA); return -1; } struct cfdriver lms_cd = { NULL, "lms", DV_DULL };