/* $NetBSD: lms.c,v 1.56 2011/07/01 18:11:24 dyoung 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 __KERNEL_RCSID(0, "$NetBSD: lms.c,v 1.56 2011/07/01 18:11:24 dyoung Exp $"); #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 */ 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 */ device_t sc_wsmousedev; }; static int lmsprobe(device_t, cfdata_t, void *); static void lmsattach(device_t, device_t, void *); static int lmsintr(void *); CFATTACH_DECL_NEW(lms, sizeof(struct lms_softc), lmsprobe, lmsattach, NULL, NULL); static int lms_enable(void *); static int lms_ioctl(void *, u_long, void *, int, struct lwp *); static void lms_disable(void *); static const struct wsmouse_accessops lms_accessops = { lms_enable, lms_ioctl, lms_disable, }; static int lmsprobe(device_t parent, cfdata_t match, void *aux) { struct isa_attach_args *ia = aux; bus_space_tag_t iot = ia->ia_iot; bus_space_handle_t ioh; int rv; if (ia->ia_nio < 1) return (0); if (ia->ia_nirq < 1) return (0); if (ISA_DIRECT_CONFIG(ia)) return (0); /* Disallow wildcarded i/o base. */ if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) return 0; if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) return 0; /* Map the i/o space. */ if (bus_space_map(iot, ia->ia_io[0].ir_addr, 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_nio = 1; ia->ia_io[0].ir_size = LMS_NPORTS; ia->ia_nirq = 1; ia->ia_niomem = 0; ia->ia_ndrq = 0; out: bus_space_unmap(iot, ioh, LMS_NPORTS); return rv; } static void lmsattach(device_t parent, device_t self, void *aux) { struct lms_softc *sc = device_private(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; aprint_naive(": Mouse\n"); aprint_normal(": Logitech Mouse\n"); if (bus_space_map(iot, ia->ia_io[0].ir_addr, LMS_NPORTS, 0, &ioh)) { aprint_error_dev(self, "can't map i/o space\n"); 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[0].ir_irq, IST_PULSE, IPL_TTY, lmsintr, sc); 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); } static int lms_enable(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; } static void lms_disable(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; } static int lms_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l) { #if 0 struct lms_softc *sc = v; #endif switch (cmd) { case WSMOUSEIO_GTYPE: *(u_int *)data = WSMOUSE_TYPE_LMS; return (0); } return (EPASSTHROUGH); } static int lmsintr(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, 0, WSMOUSE_INPUT_DELTA); return -1; }