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      1 /*	$NetBSD: ms.c,v 1.6 2008/05/14 13:29:28 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 Izumi Tsutsui.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 /*-
     28  * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
     29  *
     30  * Redistribution and use in source and binary forms, with or without
     31  * modification, are permitted provided that the following conditions
     32  * are met:
     33  * 1. Redistributions of source code must retain the above copyright
     34  *    notice, this list of conditions and the following disclaimer.
     35  * 2. Redistributions in binary form must reproduce the above copyright
     36  *    notice, this list of conditions and the following disclaimer in the
     37  *    documentation and/or other materials provided with the distribution.
     38  * 3. The name of the author may not be used to endorse or promote products
     39  *    derived from this software without specific prior written permission.
     40  *
     41  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     42  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     43  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     44  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     45  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     47  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     48  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     49  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     50  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     51  */
     52 
     53 #include <sys/cdefs.h>
     54 __KERNEL_RCSID(0, "$NetBSD: ms.c,v 1.6 2008/05/14 13:29:28 tsutsui Exp $");
     55 
     56 #include <sys/param.h>
     57 #include <sys/device.h>
     58 #include <sys/systm.h>
     59 
     60 #include <dev/wscons/wsconsio.h>
     61 #include <dev/wscons/wsmousevar.h>
     62 
     63 #include <machine/cpu.h>
     64 #include <machine/bus.h>
     65 
     66 #include <news68k/dev/msvar.h>
     67 
     68 void
     69 ms_intr(struct ms_softc *sc)
     70 {
     71 	bus_space_tag_t bt = sc->sc_bt;
     72 	bus_space_handle_t bh = sc->sc_bh;
     73 	bus_size_t offset = sc->sc_offset;
     74 	int code, index, byte0, byte1, byte2;
     75 	int button, dx, dy;
     76 
     77 	if (sc->sc_wsmousedev == NULL)
     78 		return;
     79 
     80 	code = bus_space_read_1(bt, bh, offset);
     81 	index = sc->sc_ndata;
     82 
     83 	if (code & MS_S_MARK) {
     84 		sc->sc_buf[MS_S_BYTE] = code;
     85 		sc->sc_ndata = MS_X_BYTE;
     86 		return;
     87 	}
     88 
     89 	if (index == MS_X_BYTE) {
     90 		sc->sc_buf[MS_X_BYTE] = code;
     91 		sc->sc_ndata = MS_Y_BYTE;
     92 		return;
     93 	}
     94 
     95 	if (index == MS_Y_BYTE) {
     96 		sc->sc_buf[MS_Y_BYTE] = code;
     97 		sc->sc_ndata = 0;
     98 
     99 		byte0 = sc->sc_buf[MS_S_BYTE];
    100 		byte1 = sc->sc_buf[MS_X_BYTE];
    101 		byte2 = sc->sc_buf[MS_Y_BYTE];
    102 
    103 		button = 0;
    104 		if (byte0 & MS_S_SW1)
    105 			button |= 0x01;
    106 		if (byte0 & MS_S_SW3)
    107 			button |= 0x02;
    108 		if (byte0 & MS_S_SW2)
    109 			button |= 0x04;
    110 
    111 		dx = byte1 & MS_X_DATA;
    112 		if (byte0 & MS_S_XSIGN)
    113 			dx = -dx;
    114 		dy = byte2 & MS_Y_DATA;
    115 		if (byte0 & MS_S_YSIGN)
    116 			dy = -dy;
    117 
    118 		wsmouse_input(sc->sc_wsmousedev,
    119 				button,
    120 				dx, -dy, 0, 0,
    121 		    		WSMOUSE_INPUT_DELTA);
    122 	}
    123 }
    124