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ms.c revision 1.5 
      1 /*	$NetBSD: ms.c,v 1.5 2006/11/12 19:00:43 plunky 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 1.5 2006/11/12 19:00:43 plunky 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(struct ms_softc *sc)
     47 {
     48 	bus_space_tag_t bt = sc->sc_bt;
     49 	bus_space_handle_t bh = sc->sc_bh;
     50 	bus_size_t offset = sc->sc_offset;
     51 	int code, index, byte0, byte1, byte2;
     52 	int button, dx, dy;
     53 
     54 	if (sc->sc_wsmousedev == NULL)
     55 		return;
     56 
     57 	code = bus_space_read_1(bt, bh, offset);
     58 	index = sc->sc_ndata;
     59 
     60 	if (code & MS_S_MARK) {
     61 		sc->sc_buf[MS_S_BYTE] = code;
     62 		sc->sc_ndata = MS_X_BYTE;
     63 		return;
     64 	}
     65 
     66 	if (index == MS_X_BYTE) {
     67 		sc->sc_buf[MS_X_BYTE] = code;
     68 		sc->sc_ndata = MS_Y_BYTE;
     69 		return;
     70 	}
     71 
     72 	if (index == MS_Y_BYTE) {
     73 		sc->sc_buf[MS_Y_BYTE] = code;
     74 		sc->sc_ndata = 0;
     75 
     76 		byte0 = sc->sc_buf[MS_S_BYTE];
     77 		byte1 = sc->sc_buf[MS_X_BYTE];
     78 		byte2 = sc->sc_buf[MS_Y_BYTE];
     79 
     80 		button = 0;
     81 		if (byte0 & MS_S_SW1)
     82 			button |= 0x01;
     83 		if (byte0 & MS_S_SW3)
     84 			button |= 0x02;
     85 		if (byte0 & MS_S_SW2)
     86 			button |= 0x04;
     87 
     88 		dx = byte1 & MS_X_DATA;
     89 		if (byte0 & MS_S_XSIGN)
     90 			dx = -dx;
     91 		dy = byte2 & MS_Y_DATA;
     92 		if (byte0 & MS_S_YSIGN)
     93 			dy = -dy;
     94 
     95 		wsmouse_input(sc->sc_wsmousedev,
     96 				button,
     97 				dx, -dy, 0, 0,
     98 		    		WSMOUSE_INPUT_DELTA);
     99 	}
    100 }
    101