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ms.c revision 1.2 
      1 /*	$NetBSD: ms.c,v 1.2 2003/07/15 02:59:26 lukem Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 Izumi Tsutsui.  All rights reserved.
      5  * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 __KERNEL_RCSID(0, "$NetBSD: ms.c,v 1.2 2003/07/15 02:59:26 lukem Exp $");
     32 
     33 #include <sys/param.h>
     34 #include <sys/device.h>
     35 #include <sys/systm.h>
     36 
     37 #include <dev/wscons/wsconsio.h>
     38 #include <dev/wscons/wsmousevar.h>
     39 
     40 #include <machine/cpu.h>
     41 #include <machine/bus.h>
     42 
     43 #include <news68k/dev/msvar.h>
     44 
     45 void
     46 ms_intr(sc)
     47 	struct ms_softc *sc;
     48 {
     49 	bus_space_tag_t bt = sc->sc_bt;
     50 	bus_space_handle_t bh = sc->sc_bh;
     51 	bus_size_t offset = sc->sc_offset;
     52 	int code, index, byte0, byte1, byte2;
     53 	int button, dx, dy;
     54 
     55 	if (sc->sc_wsmousedev == NULL)
     56 		return;
     57 
     58 	code = bus_space_read_1(bt, bh, offset);
     59 	index = sc->sc_ndata;
     60 
     61 	if (code & MS_S_MARK) {
     62 		sc->sc_buf[MS_S_BYTE] = code;
     63 		sc->sc_ndata = MS_X_BYTE;
     64 		return;
     65 	}
     66 
     67 	if (index == MS_X_BYTE) {
     68 		sc->sc_buf[MS_X_BYTE] = code;
     69 		sc->sc_ndata = MS_Y_BYTE;
     70 		return;
     71 	}
     72 
     73 	if (index == MS_Y_BYTE) {
     74 		sc->sc_buf[MS_Y_BYTE] = code;
     75 		sc->sc_ndata = 0;
     76 
     77 		byte0 = sc->sc_buf[MS_S_BYTE];
     78 		byte1 = sc->sc_buf[MS_X_BYTE];
     79 		byte2 = sc->sc_buf[MS_Y_BYTE];
     80 
     81 		button = 0;
     82 		if (byte0 & MS_S_SW1)
     83 			button |= 0x01;
     84 		if (byte0 & MS_S_SW3)
     85 			button |= 0x02;
     86 		if (byte0 & MS_S_SW2)
     87 			button |= 0x04;
     88 
     89 		dx = byte1 & MS_X_DATA;
     90 		if (byte0 & MS_S_XSIGN)
     91 			dx = -dx;
     92 		dy = byte2 & MS_Y_DATA;
     93 		if (byte0 & MS_S_YSIGN)
     94 			dy = -dy;
     95 
     96 		wsmouse_input(sc->sc_wsmousedev, button, dx, -dy, 0,
     97 		    WSMOUSE_INPUT_DELTA);
     98 	}
     99 }
    100