477 lines
11 KiB
C
477 lines
11 KiB
C
/* $NetBSD: opms.c,v 1.6 2002/10/25 07:47:56 jdolecek Exp $ */
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/* $OpenBSD: pccons.c,v 1.22 1999/01/30 22:39:37 imp Exp $ */
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/* NetBSD: pms.c,v 1.21 1995/04/18 02:25:18 mycroft Exp */
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/*-
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* Copyright (c) 1993, 1994, 1995 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz and Don Ahn.
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*
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* Copyright (c) 1994 Charles M. Hannum.
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* Copyright (c) 1992, 1993 Erik Forsberg.
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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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)pccons.c 5.11 (Berkeley) 5/21/91
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/vnode.h>
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#include <sys/poll.h>
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#include <sys/tty.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/conf.h>
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#include <machine/bus.h>
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#include <machine/kbdreg.h>
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#include <machine/mouse.h>
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#include <arc/dev/pcconsvar.h>
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#include <arc/dev/opmsvar.h>
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#define PMSUNIT(dev) (minor(dev))
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/* status bits */
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#define PMS_OBUF_FULL 0x01
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#define PMS_IBUF_FULL 0x02
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/* controller commands */
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#define PMS_INT_ENABLE 0x47 /* enable controller interrupts */
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#define PMS_INT_DISABLE 0x65 /* disable controller interrupts */
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#define PMS_AUX_ENABLE 0xa7 /* enable auxiliary port */
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#define PMS_AUX_DISABLE 0xa8 /* disable auxiliary port */
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#define PMS_MAGIC_1 0xa9 /* XXX */
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#define PMS_8042_CMD 0x65
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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 1020 /* buffer size */
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#define FLUSHQ(q) { if((q)->c_cc) ndflush(q, (q)->c_cc); }
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extern struct cfdriver opms_cd;
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dev_type_open(opmsopen);
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dev_type_close(opmsclose);
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dev_type_read(opmsread);
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dev_type_ioctl(opmsioctl);
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dev_type_poll(opmspoll);
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dev_type_kqfilter(opmskqfilter);
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const struct cdevsw opms_cdevsw = {
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opmsopen, opmsclose, opmsread, nowrite, opmsioctl,
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nostop, notty, opmspoll, nommap, opmskqfilter,
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};
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static __inline void pms_dev_cmd __P((u_char));
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static __inline void pms_aux_cmd __P((u_char));
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static __inline void pms_pit_cmd __P((u_char));
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static __inline void
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pms_dev_cmd(value)
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u_char value;
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{
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kbd_flush_input();
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kbd_cmd_write_1(0xd4);
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kbd_flush_input();
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kbd_data_write_1(value);
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}
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static __inline void
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pms_aux_cmd(value)
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u_char value;
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{
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kbd_flush_input();
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kbd_cmd_write_1(value);
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}
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static __inline void
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pms_pit_cmd(value)
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u_char value;
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{
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kbd_flush_input();
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kbd_cmd_write_1(0x60);
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kbd_flush_input();
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kbd_data_write_1(value);
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}
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int opms_common_match(kbd_iot, config)
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bus_space_tag_t kbd_iot;
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struct pccons_config *config;
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{
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u_char x;
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kbd_context_init(kbd_iot, config);
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pms_dev_cmd(KBC_RESET);
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pms_aux_cmd(PMS_MAGIC_1);
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delay(10000);
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x = kbd_data_read_1();
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pms_pit_cmd(PMS_INT_DISABLE);
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if (x & 0x04)
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return 0;
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return 1;
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}
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void
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opms_common_attach(sc, opms_iot, config)
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struct opms_softc *sc;
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bus_space_tag_t opms_iot;
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struct pccons_config *config;
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{
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kbd_context_init(opms_iot, config);
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/* Other initialization was done by opmsprobe. */
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sc->sc_state = 0;
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}
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int
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opmsopen(dev, flag, mode, p)
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dev_t dev;
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int flag, 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 opms_softc *sc;
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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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if (sc->sc_state & PMS_OPEN)
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return EBUSY;
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if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1)
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return ENOMEM;
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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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/* Enable interrupts. */
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pms_dev_cmd(PMS_DEV_ENABLE);
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pms_aux_cmd(PMS_AUX_ENABLE);
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pms_dev_cmd(PMS_SET_RES);
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pms_dev_cmd(3); /* 8 counts/mm */
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pms_dev_cmd(PMS_SET_SCALE21);
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#if 0
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pms_dev_cmd(PMS_SET_SAMPLE);
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pms_dev_cmd(100); /* 100 samples/sec */
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pms_dev_cmd(PMS_SET_STREAM);
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#endif
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pms_pit_cmd(PMS_INT_ENABLE);
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return 0;
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}
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int
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opmsclose(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)];
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/* Disable interrupts. */
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pms_dev_cmd(PMS_DEV_DISABLE);
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pms_pit_cmd(PMS_INT_DISABLE);
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pms_aux_cmd(PMS_AUX_DISABLE);
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sc->sc_state &= ~PMS_OPEN;
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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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opmsread(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 opms_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 occurred. */
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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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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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error = tsleep((caddr_t)sc, PZERO | PCATCH, "pmsrea", 0);
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if (error) {
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sc->sc_state &= ~PMS_ASLP;
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splx(s);
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return error;
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}
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}
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splx(s);
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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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error = uiomove(buffer, length, uio);
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if (error)
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break;
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}
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return error;
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}
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int
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opmsioctl(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 opms_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;
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switch (cmd) {
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case MOUSEIOCREAD:
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s = spltty();
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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 (sc->sc_x > 127)
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info.xmotion = 127;
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else if (sc->sc_x < -127)
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/* Bounding at -127 avoids a bug in XFree86. */
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info.xmotion = -127;
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else
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info.xmotion = sc->sc_x;
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if (sc->sc_y > 127)
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info.ymotion = 127;
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else if (sc->sc_y < -127)
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info.ymotion = -127;
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else
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info.ymotion = sc->sc_y;
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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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splx(s);
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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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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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int
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opmsintr(arg)
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void *arg;
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{
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struct opms_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 char dx, dy;
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u_char buffer[5];
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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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kbd_flush_input();
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return 0;
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}
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switch (state) {
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case 0:
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buttons = kbd_data_read_1();
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if ((buttons & 0xc0) == 0)
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++state;
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break;
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case 1:
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dx = kbd_data_read_1();
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/* Bounding at -127 avoids a bug in XFree86. */
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dx = (dx == -128) ? -127 : dx;
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++state;
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break;
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case 2:
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dy = kbd_data_read_1();
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dy = (dy == -128) ? -127 : dy;
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state = 0;
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buttons = ((buttons & PS2LBUTMASK) << 2) |
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((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1);
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changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3;
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sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) | changed;
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if (dx || dy || changed) {
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/* Update accumulated movements. */
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sc->sc_x += dx;
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sc->sc_y += dy;
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/* Add this event to the queue. */
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buffer[0] = 0x80 | (buttons & BUTSTATMASK);
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if(dx < 0)
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buffer[0] |= 0x10;
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buffer[1] = dx & 0x7f;
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if(dy < 0)
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buffer[0] |= 0x20;
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buffer[2] = dy & 0x7f;
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buffer[3] = buffer[4] = 0;
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(void) b_to_q(buffer, sizeof buffer, &sc->sc_q);
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if (sc->sc_state & PMS_ASLP) {
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sc->sc_state &= ~PMS_ASLP;
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wakeup((caddr_t)sc);
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}
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selnotify(&sc->sc_rsel, 0);
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}
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break;
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}
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return -1;
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}
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int
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opmspoll(dev, events, p)
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dev_t dev;
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int events;
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struct proc *p;
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{
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struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)];
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int revents = 0;
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int s = spltty();
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if (events & (POLLIN | POLLRDNORM)) {
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if (sc->sc_q.c_cc > 0)
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revents |= events & (POLLIN | POLLRDNORM);
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else
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selrecord(p, &sc->sc_rsel);
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}
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splx(s);
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return (revents);
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}
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static void
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filt_opmsrdetach(struct knote *kn)
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{
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struct opms_softc *sc = kn->kn_hook;
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int s;
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s = spltty();
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SLIST_REMOVE(&sc->sc_rsel.si_klist, kn, knote, kn_selnext);
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splx(s);
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}
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static int
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filt_opmsread(struct knote *kn, long hint)
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{
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struct opms_softc *sc = kn->kn_hook;
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kn->kn_data = sc->sc_q.c_cc;
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return (kn->kn_data > 0);
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}
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static const struct filterops opmsread_filtops =
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{ 1, NULL, filt_opmsrdetach, filt_opmsread };
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int
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opmskqfilter(dev_t dev, struct knote *kn)
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{
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struct opms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)];
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struct klist *klist;
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int s;
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switch (kn->kn_filter) {
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case EVFILT_READ:
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klist = &sc->sc_rsel.si_klist;
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kn->kn_fop = &opmsread_filtops;
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break;
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default:
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return (1);
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}
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kn->kn_hook = sc;
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s = spltty();
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SLIST_INSERT_HEAD(klist, kn, kn_selnext);
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splx(s);
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return (0);
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}
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