FreeBSD/Linux Kernel Cross Reference
sys/dev/mse/mse_cbus.c

     /*-
      * Copyright (c) 2004 M. Warner Losh
      * 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.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
     *
     * $FreeBSD$
     */
    
    /*-
     * Copyright 1992 by the University of Guelph
     *
     * Permission to use, copy and modify this
     * software and its documentation for any purpose and without
     * fee is hereby granted, provided that the above copyright
     * notice appear in all copies and that both that copyright
     * notice and this permission notice appear in supporting
     * documentation.
     * University of Guelph makes no representations about the suitability of
     * this software for any purpose.  It is provided "as is"
     * without express or implied warranty.
     */
    /*
     * Driver for the Logitech and ATI Inport Bus mice for use with 386bsd and
     * the X386 port, courtesy of
     * Rick Macklem, rick@snowhite.cis.uoguelph.ca
     * Caveats: The driver currently uses spltty(), but doesn't use any
     * generic tty code. It could use splmse() (that only masks off the
     * bus mouse interrupt, but that would require hacking in i386/isa/icu.s.
     * (This may be worth the effort, since the Logitech generates 30/60
     * interrupts/sec continuously while it is open.)
     * NB: The ATI has NOT been tested yet!
     */
    
    /*
     * Modification history:
     * Sep 6, 1994 -- Lars Fredriksen(fredriks@mcs.com)
     *   improved probe based on input from Logitech.
     *
     * Oct 19, 1992 -- E. Stark (stark@cs.sunysb.edu)
     *   fixes to make it work with Microsoft InPort busmouse
     *
     * Jan, 1993 -- E. Stark (stark@cs.sunysb.edu)
     *   added patches for new "select" interface
     *
     * May 4, 1993 -- E. Stark (stark@cs.sunysb.edu)
     *   changed position of some spl()'s in mseread
     *
     * October 8, 1993 -- E. Stark (stark@cs.sunysb.edu)
     *   limit maximum negative x/y value to -127 to work around XFree problem
     *   that causes spurious button pushes.
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/conf.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/bus.h>
    #include <sys/poll.h>
    #include <sys/selinfo.h>
    #include <sys/uio.h>
    #include <sys/mouse.h>
    
    #include <machine/bus.h>
    #include <machine/resource.h>
    #include <sys/rman.h>
    
    #include <isa/isavar.h>
    
    #include <dev/mse/msevar.h>
    
    static  int             mse_cbus_probe(device_t dev);
    static  int             mse_cbus_attach(device_t dev);
    static  int             mse_cbus_detach(device_t dev);
    
    static  device_method_t mse_methods[] = {
            DEVMETHOD(device_probe,         mse_cbus_probe),
            DEVMETHOD(device_attach,        mse_cbus_attach),
            DEVMETHOD(device_detach,        mse_cbus_detach),
           { 0, 0 }
   };
   
   static  driver_t        mse_driver = {
           "mse",
           mse_methods,
           sizeof(mse_softc_t),
   };
   
   DRIVER_MODULE(mse, isa, mse_driver, mse_devclass, 0, 0);
   
   static struct isa_pnp_id mse_ids[] = {
   #if 0
           { 0x001fa3b8, "PC-98 bus mouse" },              /* NEC1F00 */
   #endif
           { 0 }
   };
   
   /*
    * PC-9801 Bus mouse definitions
    */
   
   #define MODE    MSE_PORTD
   #define HC      MSE_PORTD
   #define INT     MSE_PORTD
   
   #define XL      0x00
   #define XH      0x20
   #define YL      0x40
   #define YH      0x60
   
   #define INT_ENABLE      0x8
   #define INT_DISABLE     0x9
   #define HC_NO_CLEAR     0xe
   #define HC_CLEAR        0xf
   
   static  bus_addr_t      mse_port[] = {0, 2, 4, 6};
   
   static  int             mse_probe98m(device_t dev, mse_softc_t *sc);
   static  void            mse_disable98m(bus_space_tag_t t, bus_space_handle_t h);
   static  void            mse_get98m(bus_space_tag_t t, bus_space_handle_t h,
                               int *dx, int *dy, int *but);
   static  void            mse_enable98m(bus_space_tag_t t, bus_space_handle_t h);
   
   static struct mse_types mse_types[] = {
           { MSE_98BUSMOUSE,
             mse_probe98m, mse_enable98m, mse_disable98m, mse_get98m,
             { 2, MOUSE_IF_BUS, MOUSE_MOUSE, MOUSE_MODEL_GENERIC, 0, },
             { MOUSE_PROTO_BUS, -1, -1, 0, 0, MOUSE_MSC_PACKETSIZE, 
               { MOUSE_MSC_SYNCMASK, MOUSE_MSC_SYNC, }, }, },
           { 0, },
   };
   
   static int
   mse_cbus_probe(device_t dev)
   {
           mse_softc_t *sc;
           int error;
           int rid;
           int i;
   
           /* check PnP IDs */
           error = ISA_PNP_PROBE(device_get_parent(dev), dev, mse_ids);
           if (error == ENXIO)
                   return error;
   
           sc = device_get_softc(dev);
           rid = 0;
           sc->sc_port = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, mse_port,
                                             MSE_IOSIZE, RF_ACTIVE);
           if (sc->sc_port == NULL)
                   return ENXIO;
           if (isa_load_resourcev(sc->sc_port, mse_port, MSE_IOSIZE)) {
                   bus_release_resource(dev, SYS_RES_IOPORT, rid, sc->sc_port);
                   return ENXIO;
           }
           sc->sc_iot = rman_get_bustag(sc->sc_port);
           sc->sc_ioh = rman_get_bushandle(sc->sc_port);
   
           /*
            * Check for each mouse type in the table.
            */
           i = 0;
           while (mse_types[i].m_type) {
                   if ((*mse_types[i].m_probe)(dev, sc)) {
                           sc->sc_mousetype = mse_types[i].m_type;
                           sc->sc_enablemouse = mse_types[i].m_enable;
                           sc->sc_disablemouse = mse_types[i].m_disable;
                           sc->sc_getmouse = mse_types[i].m_get;
                           sc->hw = mse_types[i].m_hw;
                           sc->mode = mse_types[i].m_mode;
                           bus_release_resource(dev, SYS_RES_IOPORT, rid,
                                                sc->sc_port);
                           device_set_desc(dev, "Bus/InPort Mouse");
                           return 0;
                   }
                   i++;
           }
           bus_release_resource(dev, SYS_RES_IOPORT, rid, sc->sc_port);
           return ENXIO;
   }
   
   static int
   mse_cbus_attach(device_t dev)
   {
           mse_softc_t *sc;
           int rid;
   
           sc = device_get_softc(dev);
   
           rid = 0;
           sc->sc_port = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, mse_port,
                                             MSE_IOSIZE, RF_ACTIVE);
           if (sc->sc_port == NULL)
                   return ENXIO;
           if (isa_load_resourcev(sc->sc_port, mse_port, MSE_IOSIZE)) {
                   bus_release_resource(dev, SYS_RES_IOPORT, rid, sc->sc_port);
                   return ENXIO;
           }
           sc->sc_iot = rman_get_bustag(sc->sc_port);
           sc->sc_ioh = rman_get_bushandle(sc->sc_port);
   
           return (mse_common_attach(dev));
   }
   
   static int
   mse_cbus_detach(device_t dev)
   {
           mse_softc_t *sc;
           int rid;
   
           sc = device_get_softc(dev);
           if (sc->sc_flags & MSESC_OPEN)
                   return EBUSY;
   
           rid = 0;
           BUS_TEARDOWN_INTR(device_get_parent(dev), dev, sc->sc_intr, sc->sc_ih);
           bus_release_resource(dev, SYS_RES_IRQ, rid, sc->sc_intr);
           bus_release_resource(dev, SYS_RES_IOPORT, rid, sc->sc_port);
   
           destroy_dev(sc->sc_dev);
           destroy_dev(sc->sc_ndev);
   
           return 0;
   }
   
   /*
    * Routines for the PC98 bus mouse.
    */
   
   /*
    * Test for a PC98 bus mouse and return 1 if it is.
    * (do not enable interrupts)
    */
   static int
   mse_probe98m(device_t dev, mse_softc_t *sc)
   {
           /* mode set */
           bus_space_write_1(sc->sc_iot, sc->sc_ioh, MODE, 0x93);
   
           /* initialize */
           /* INT disable */
           bus_space_write_1(sc->sc_iot, sc->sc_ioh, INT, INT_DISABLE);
           /* HC = 0 */
           bus_space_write_1(sc->sc_iot, sc->sc_ioh, HC, HC_NO_CLEAR);
           /* HC = 1 */
           bus_space_write_1(sc->sc_iot, sc->sc_ioh, HC, HC_CLEAR);
   
           return (1);
   }
   
   /*
    * Initialize PC98 bus mouse and enable interrupts.
    */
   static void
   mse_enable98m(bus_space_tag_t tag, bus_space_handle_t handle)
   {
           bus_space_write_1(tag, handle, INT, INT_ENABLE);    /* INT enable */
           bus_space_write_1(tag, handle, HC, HC_NO_CLEAR);    /* HC = 0 */
           bus_space_write_1(tag, handle, HC, HC_CLEAR);       /* HC = 1 */
   }
    
   /*
    * Disable interrupts for PC98 Bus mouse.
    */
   static void
   mse_disable98m(bus_space_tag_t tag, bus_space_handle_t handle)
   {
           bus_space_write_1(tag, handle, INT, INT_DISABLE);   /* INT disable */
           bus_space_write_1(tag, handle, HC, HC_NO_CLEAR);    /* HC = 0 */
           bus_space_write_1(tag, handle, HC, HC_CLEAR);       /* HC = 1 */
   }
   
   /*
    * Get current dx, dy and up/down button state.
    */
   static void
   mse_get98m(bus_space_tag_t tag, bus_space_handle_t handle, int *dx, int *dy,
       int *but)
   {
           register char x, y;
   
           bus_space_write_1(tag, handle, INT, INT_DISABLE);   /* INT disable */
   
           bus_space_write_1(tag, handle, HC, HC_CLEAR);       /* HC = 1 */
   
           /* X low */
           bus_space_write_1(tag, handle, MSE_PORTC, 0x90 | XL);
           x = bus_space_read_1(tag, handle, MSE_PORTA) & 0x0f;
           /* X high */
           bus_space_write_1(tag, handle, MSE_PORTC, 0x90 | XH);
           x |= ((bus_space_read_1(tag, handle, MSE_PORTA)  & 0x0f) << 4);
   
           /* Y low */
           bus_space_write_1(tag, handle, MSE_PORTC, 0x90 | YL);
           y = (bus_space_read_1(tag, handle, MSE_PORTA) & 0x0f);
           /* Y high */
           bus_space_write_1(tag, handle, MSE_PORTC, 0x90 | YH);
           y |= ((bus_space_read_1(tag, handle, MSE_PORTA) & 0x0f) << 4);
   
           *but = (bus_space_read_1(tag, handle, MSE_PORTA) >> 5) & 7;
   
           *dx = x;
           *dy = y;
   
           bus_space_write_1(tag, handle, HC, HC_NO_CLEAR);    /* HC = 0 */
   
           bus_space_write_1(tag, handle, INT, INT_ENABLE);    /* INT enable */
   }

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