695 lines
15 KiB
C
695 lines
15 KiB
C
/* $NetBSD: pms.c,v 1.22 2001/03/18 17:00:56 rearnsha Exp $ */
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/*-
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* Copyright (c) 1996 D.C. Tsen
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* Copyright (c) 1994 Charles M. Hannum.
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* Copyright (c) 1992, 1993 Erik Forsberg.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the RiscBSD team.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from:pms.c,v 1.24 1995/12/24 02:30:28 mycroft Exp
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*/
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/*
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* Ported from 386 version of PS/2 mouse driver.
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* D.C. Tsen
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/file.h>
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#include <sys/select.h>
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#include <sys/proc.h>
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#include <sys/signalvar.h>
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#include <sys/vnode.h>
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#include <sys/device.h>
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#include <sys/poll.h>
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#include <machine/bus.h>
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#include <machine/conf.h>
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#include <machine/mouse.h>
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#include <arm32/dev/pmsvar.h>
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#define MOUSE_IOC_ACK
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/* mouse commands */
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#define PMS_SET_SCALE11 0xe6 /* set scaling 1:1 */
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#define PMS_SET_SCALE21 0xe7 /* set scaling 2:1 */
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#define PMS_SET_RES 0xe8 /* set resolution */
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#define PMS_GET_SCALE 0xe9 /* get scaling factor */
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#define PMS_SET_STREAM 0xea /* set streaming mode */
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#define PMS_SET_SAMPLE 0xf3 /* set sampling rate */
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#define PMS_DEV_ENABLE 0xf4 /* mouse on */
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#define PMS_DEV_DISABLE 0xf5 /* mouse off */
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#define PMS_RESET 0xff /* reset */
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#define PMS_CHUNK 128 /* chunk size for read */
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#define PMS_BSIZE (20*64) /* buffer size */
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/* function prototypes */
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void pmswatchdog __P((void *));
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#ifdef MOUSE_IOC_ACK
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static void pmsputbuffer __P((struct pms_softc *sc, struct mousebufrec *buf));
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#endif
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static __inline void pms_flush __P((struct pms_softc *sc));
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extern struct cfdriver opms_cd;
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/* pms device driver structure */
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#define PMS_DATA 0
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#define PMS_CR 1
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#define PMS_STATUS 1
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#define PMS_CR_ENABLE 0x08
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#define PMS_CR_KDATAO 0x02
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#define PMS_CR_KCLKO 0x01
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#define PMS_ST_TXE 0x80
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#define PMS_ST_TXB 0x40
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#define PMS_ST_RXF 0x20
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#define PMS_ST_RXB 0x10
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#define PMS_ST_ENABLE 0x08
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#define PMS_ST_RXPARITY 0x04
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#define PMS_ST_KDATAI 0x02
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#define PMS_ST_KCLKI 0x01
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#define PMSUNIT(dev) (minor(dev))
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/*
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* Flush any pending mouse data
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*/
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static __inline void
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pms_flush(sc)
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struct pms_softc *sc;
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{
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int n = 1000;
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while (n-- && (bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS)
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& PMS_ST_RXF)) {
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delay(6);
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(void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
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delay(6);
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(void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
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delay(6);
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(void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
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}
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}
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/*
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* Send a command to the mouse
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*/
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static int
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cmd_mouse(sc, cmd)
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struct pms_softc * sc;
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u_char cmd;
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{
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int c;
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int i = 0;
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int retry = 10;
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for (i = 0; i < 1000; i++) {
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if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & PMS_ST_TXE)
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break;
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delay(2);
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}
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if (i == 1000)
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printf("Mouse transmit not ready\n");
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resend:
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_DATA, cmd);
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delay(2);
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c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS);
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i = 1000;
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while (i-- && !(c & PMS_ST_RXF)) {
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delay(1);
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c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS);
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}
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delay(10000);
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c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
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if ((c == 0xFA) || (c == 0xEE))
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return(0);
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if (--retry) {
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pms_flush(sc);
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goto resend;
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}
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printf("%s: Mouse cmd failed, cmd = %x, status = %x\n", sc->sc_dev.dv_xname, cmd, c);
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return(1);
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}
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/*
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* initialise the mouse
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*
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*
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* The sets up parts of the softc and then tests the mouse
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* to make sure it is responding.
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* It then configures the mouse as required.
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*/
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int
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pmsinit(sc)
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struct pms_softc *sc;
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{
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int i, j;
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int mid;
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/* Set up softc */
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callout_init(&sc->sc_watchdog_ch);
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sc->sc_state = 0;
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sc->origx = 0;
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sc->origy = 0;
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sc->boundx = -4095;
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sc->boundy = -4095;
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sc->bounda = 4096;
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sc->boundb = 4096;
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/* Enable the mouse */
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_CR, PMS_CR_ENABLE);
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i = 0;
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while ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & 0x03)
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!= 0x03) {
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if (i++ > 10) {
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printf("Mouse not found, status = <%x>.\n",
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bus_space_read_1(sc->sc_iot, sc->sc_ioh,
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PMS_STATUS));
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return(0);
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}
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pms_flush(sc);
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delay(2);
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_CR, PMS_CR_ENABLE);
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}
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pms_flush(sc);
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/*
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* Disable, reset and enable the mouse.
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*/
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if (cmd_mouse(sc, PMS_DEV_DISABLE))
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return(0);
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cmd_mouse(sc, PMS_RESET);
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delay(300000);
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j = 10;
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i = 0;
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while ((mid = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA)) != 0xAA) {
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if (++i > 500) {
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if (--j < 0) {
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printf("Mouse Reset failed, status = <%x>.\n", mid);
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return(0);
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}
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pms_flush(sc);
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cmd_mouse(sc, PMS_RESET);
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i = 0;
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}
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delay(100000);
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}
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mid = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
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#if 0
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cmd_mouse(sc, PMS_SET_RES);
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cmd_mouse(sc, 3); /* 8 counts/mm */
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cmd_mouse(sc, PMS_SET_SCALE21);
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#endif
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cmd_mouse(sc, PMS_SET_SAMPLE);
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cmd_mouse(sc, 40); /* 40 samples/sec */
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cmd_mouse(sc, PMS_SET_STREAM);
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cmd_mouse(sc, PMS_DEV_ENABLE);
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return(1);
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}
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/*
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* device open routine
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*/
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int
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pmsopen(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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int unit = PMSUNIT(dev);
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struct pms_softc *sc;
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/* validate the unit and the softc */
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if (unit >= opms_cd.cd_ndevs)
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return ENXIO;
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sc = opms_cd.cd_devs[unit];
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if (!sc)
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return ENXIO;
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/* Are we already open ? */
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if (sc->sc_state & PMS_OPEN)
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return EBUSY;
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/* initialise buffer */
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if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1)
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return ENOMEM;
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/* set up the softc structure */
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sc->sc_proc = p;
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sc->sc_mode = MOUSEMODE_ABS;
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sc->sc_state |= PMS_OPEN;
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sc->sc_status = 0;
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sc->sc_x = sc->sc_y = 0;
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sc->lastx = -1;
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sc->lasty = -1;
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sc->lastb = -1;
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/* enable interrupts */
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sc->sc_intenable(sc, 1);
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/* install watchdog timeout */
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callout_reset(&sc->sc_watchdog_ch, 30 * hz,
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pmswatchdog, sc);
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return(0);
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}
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/*
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* driver close function
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*/
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int
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pmsclose(dev, flag, mode, p)
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dev_t dev;
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int flag;
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int mode;
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struct proc *p;
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{
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struct pms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)];
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/* remove the timeout */
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callout_stop(&sc->sc_watchdog_ch);
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/* disable interrupts */
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sc->sc_intenable(sc, 0);
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/* clean up*/
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sc->sc_proc = NULL;
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sc->sc_state &= ~PMS_OPEN;
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sc->sc_x = sc->sc_y = 0;
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clfree(&sc->sc_q);
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return 0;
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}
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int
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pmsread(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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struct pms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)];
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int s;
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int error = 0;
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size_t length;
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u_char buffer[PMS_CHUNK];
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/* Block until mouse activity occured. */
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s = spltty();
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while (sc->sc_q.c_cc == 0) {
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if (flag & IO_NDELAY) {
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(void)splx(s);
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return EWOULDBLOCK;
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}
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sc->sc_state |= PMS_ASLP;
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if ((error = tsleep((caddr_t)sc, (PZERO | PCATCH), "pmsread", 0))) {
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sc->sc_state &= ~PMS_ASLP;
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(void)splx(s);
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return error;
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}
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}
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/* Transfer as many chunks as possible. */
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while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) {
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length = min(sc->sc_q.c_cc, uio->uio_resid);
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if (length > sizeof(buffer))
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length = sizeof(buffer);
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/* Remove a small chunk from the input queue. */
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(void) q_to_b(&sc->sc_q, buffer, length);
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/* Copy the data to the user process. */
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if ((error = uiomove(buffer, length, uio)))
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break;
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}
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(void)splx(s);
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return error;
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}
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int
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pmsioctl(dev, cmd, addr, flag, p)
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dev_t dev;
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u_long cmd;
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caddr_t addr;
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int flag;
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struct proc *p;
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{
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struct pms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)];
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struct mouseinfo info;
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int s;
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int error = 0;
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s = spltty();
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switch (cmd) {
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case MOUSEIOC_SETSTATE:
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printf("MOUSEIOC_SETSTATE called\n");
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break;
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case MOUSEIOC_WRITEX:
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sc->sc_x = *(int *) addr;
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break;
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case MOUSEIOC_WRITEY:
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sc->sc_y = *(int *) addr;
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break;
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case MOUSEIOC_SETBOUNDS:
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{
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register struct mouse_boundingbox *bo = (void *) addr;
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struct mousebufrec buffer;
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sc->boundx = bo->x; sc->boundy = bo->y;
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sc->bounda = bo->a; sc->boundb = bo->b;
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buffer.status = IOC_ACK;
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buffer.x = sc->origx;
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buffer.y = sc->origy;
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#ifdef MOUSE_IOC_ACK
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pmsputbuffer(sc, &buffer);
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#endif
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break;
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}
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case MOUSEIOC_SETMODE:
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{
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struct mousebufrec buffer;
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sc->sc_mode = *(int *)addr;
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buffer.status = IOC_ACK;
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buffer.x = sc->origx;
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buffer.y = sc->origy;
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#ifdef MOUSE_IOC_ACK
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if (sc->sc_q.c_cc > 0)
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printf("%s: setting mode with non empty buffer (%d)\n",
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sc->sc_dev.dv_xname, sc->sc_q.c_cc);
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pmsputbuffer(sc, &buffer);
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#endif
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break;
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}
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case MOUSEIOC_SETORIGIN:
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{
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register struct mouse_origin *oo = (void *) addr;
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struct mousebufrec buffer;
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sc->origx = oo->x;
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sc->origy = oo->y;
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buffer.status = IOC_ACK;
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buffer.x = sc->origx;
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buffer.y = sc->origy;
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#ifdef MOUSE_IOC_ACK
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pmsputbuffer(sc, &buffer);
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#endif
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break;
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}
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case MOUSEIOC_GETBOUNDS:
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{
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register struct mouse_boundingbox *bo = (void *) addr;
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bo->x = sc->boundx; bo->y = sc->boundy;
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bo->a = sc->bounda; bo->b = sc->boundb;
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break;
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}
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case MOUSEIOC_GETORIGIN:
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{
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register struct mouse_origin *oo = (void *) addr;
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oo->x = sc->origx;
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oo->y = sc->origy;
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break;
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}
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case MOUSEIOC_GETSTATE:
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info.status = sc->sc_status;
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if (sc->sc_x || sc->sc_y)
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info.status |= MOVEMENT;
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#if 1
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info.xmotion = sc->sc_x;
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info.ymotion = sc->sc_y;
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#else
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if (sc->sc_x > sc->bounda)
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info.xmotion = sc->bounda;
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else if (sc->sc_x < sc->boundx)
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info.xmotion = sc->boundx;
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else
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info.xmotion = sc->sc_x;
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if (sc->sc_y > sc->boundb)
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info.ymotion = sc->boundb;
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else if (sc->sc_y < sc->boundy)
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info.ymotion = sc->boundy;
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else
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info.ymotion = sc->sc_y;
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#endif
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/* Reset historical information. */
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sc->sc_x = sc->sc_y = 0;
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sc->sc_status &= ~BUTCHNGMASK;
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ndflush(&sc->sc_q, sc->sc_q.c_cc);
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error = copyout(&info, addr, sizeof(struct mouseinfo));
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break;
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default:
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error = EINVAL;
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break;
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}
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(void)splx(s);
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return error;
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}
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/* Masks for the first byte of a packet */
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#define PS2LBUTMASK 0x01
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#define PS2RBUTMASK 0x02
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#define PS2MBUTMASK 0x04
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#define XNEG_MASK 0x10
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#define YNEG_MASK 0x20
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int
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pmsintr(arg)
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void *arg;
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{
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struct pms_softc *sc = arg;
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static int state = 0;
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static u_char buttons;
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u_char changed;
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static int dx, dy;
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int dosignal = 0;
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int s;
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u_char b;
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struct mousebufrec mbuffer;
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if ((sc->sc_state & PMS_OPEN) == 0) {
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/* Interrupts are not expected. Discard the byte. */
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pms_flush(sc);
|
|
return(-1); /* Could have been ours but pass it on */
|
|
}
|
|
|
|
switch (state) {
|
|
case 0:
|
|
buttons = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
|
|
if ((buttons & 0xc0) == 0)
|
|
++state;
|
|
break;
|
|
|
|
case 1:
|
|
dx = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
|
|
dx = (buttons & XNEG_MASK) ? -dx : dx;
|
|
++state;
|
|
break;
|
|
|
|
case 2:
|
|
dy = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
|
|
dy = (buttons & YNEG_MASK) ? -dy : dy;
|
|
state = 0;
|
|
|
|
buttons = ((buttons & PS2LBUTMASK) << 2) |
|
|
((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1);
|
|
/*
|
|
* Ahhh, the Xarm server interrupt button bits reversed.
|
|
* If bit is set to 1, it means button is not pressed which is
|
|
* not what PS/2 mouse button bits said. Since we are simulating
|
|
* the quadmouse, that's not too picky about it.
|
|
*/
|
|
buttons ^= BUTSTATMASK;
|
|
changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3;
|
|
sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed;
|
|
|
|
if (dx || dy || changed) {
|
|
if (dx < 0)
|
|
dx = -(256 + dx);
|
|
if (dy < 0)
|
|
dy = -(256 + dy);
|
|
|
|
/* Update accumulated movements. */
|
|
sc->sc_x += dx;
|
|
sc->sc_y += dy;
|
|
|
|
if (sc->sc_x > sc->bounda)
|
|
sc->sc_x = sc->bounda;
|
|
else if (sc->sc_x < sc->boundx)
|
|
sc->sc_x = sc->boundx;
|
|
|
|
if (sc->sc_y > sc->boundb)
|
|
sc->sc_y = sc->boundb;
|
|
else if (sc->sc_y < sc->boundy)
|
|
sc->sc_y = sc->boundy;
|
|
|
|
if (sc->sc_q.c_cc == 0)
|
|
dosignal = 1;
|
|
|
|
/* Add this event to the queue. */
|
|
b = buttons & BUTSTATMASK;
|
|
mbuffer.status = b | (b ^ sc->lastb) << 3
|
|
| (((sc->sc_x==sc->lastx) && (sc->sc_y==sc->lasty))?0:MOVEMENT);
|
|
mbuffer.x = sc->sc_x * 2;
|
|
mbuffer.y = sc->sc_y * 2;
|
|
microtime(&mbuffer.event_time);
|
|
s = spltty();
|
|
(void) b_to_q((char *)&mbuffer, sizeof(mbuffer), &sc->sc_q);
|
|
(void) splx(s);
|
|
sc->lastx = sc->sc_x;
|
|
sc->lasty = sc->sc_y;
|
|
sc->lastb = b;
|
|
|
|
if(sc->sc_mode == MOUSEMODE_REL) {
|
|
sc->origx = sc->origy = 0;
|
|
sc->sc_x = sc->sc_y = 0;
|
|
}
|
|
|
|
selwakeup(&sc->sc_rsel);
|
|
if (sc->sc_state & PMS_ASLP) {
|
|
sc->sc_state &= ~PMS_ASLP;
|
|
wakeup((caddr_t)sc);
|
|
}
|
|
/* if (dosignal)*/
|
|
psignal(sc->sc_proc, SIGIO);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return(1); /* Claim interrupt */
|
|
}
|
|
|
|
|
|
int
|
|
pmspoll(dev, events, p)
|
|
dev_t dev;
|
|
int events;
|
|
struct proc *p;
|
|
{
|
|
struct pms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)];
|
|
int revents = 0;
|
|
int s = spltty();
|
|
|
|
if (events & (POLLIN | POLLRDNORM)) {
|
|
if (sc->sc_q.c_cc > 0)
|
|
revents |= events & (POLLIN | POLLRDNORM);
|
|
else
|
|
selrecord(p, &sc->sc_rsel);
|
|
}
|
|
|
|
(void)splx(s);
|
|
return (revents);
|
|
}
|
|
|
|
|
|
void
|
|
pmswatchdog(arg)
|
|
void *arg;
|
|
{
|
|
struct pms_softc *sc = arg;
|
|
int s;
|
|
|
|
if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & 0x03)
|
|
!= 0x03) {
|
|
printf("%s: Mouse is dead (%x), restart it\n",
|
|
sc->sc_dev.dv_xname, bus_space_read_1(sc->sc_iot,
|
|
sc->sc_ioh, PMS_STATUS));
|
|
s = spltty();
|
|
pmsinit(sc);
|
|
(void)splx(s);
|
|
}
|
|
}
|
|
|
|
#ifdef MOUSE_IOC_ACK
|
|
static void
|
|
pmsputbuffer(sc, buffer)
|
|
struct pms_softc *sc;
|
|
struct mousebufrec *buffer;
|
|
{
|
|
int s;
|
|
int dosignal = 0;
|
|
|
|
/* Time stamp the buffer */
|
|
microtime(&buffer->event_time);
|
|
|
|
if (sc->sc_q.c_cc == 0)
|
|
dosignal = 1;
|
|
|
|
s=spltty();
|
|
(void)b_to_q((char *)buffer, sizeof(*buffer), &sc->sc_q);
|
|
(void)splx(s);
|
|
selwakeup(&sc->sc_rsel);
|
|
|
|
if (sc->sc_state & PMS_ASLP) {
|
|
sc->sc_state &= ~PMS_ASLP;
|
|
wakeup((caddr_t)sc);
|
|
}
|
|
|
|
if (dosignal)
|
|
psignal(sc->sc_proc, SIGIO);
|
|
}
|
|
#endif
|
|
|
|
/* End of pms.c */
|