NetBSD-5.0.2/sys/arch/arc/dev/opms.c
/* $NetBSD: opms.c,v 1.18 2008/06/13 08:27:38 cegger Exp $ */
/* $OpenBSD: pccons.c,v 1.22 1999/01/30 22:39:37 imp Exp $ */
/* NetBSD: pms.c,v 1.21 1995/04/18 02:25:18 mycroft Exp */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz and Don Ahn.
*
* Copyright (c) 1994 Charles M. Hannum.
* Copyright (c) 1992, 1993 Erik Forsberg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)pccons.c 5.11 (Berkeley) 5/21/91
*/
/*-
* Copyright (c) 1993, 1994, 1995 Charles M. Hannum. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz and Don Ahn.
*
* Copyright (c) 1994 Charles M. Hannum.
* Copyright (c) 1992, 1993 Erik Forsberg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)pccons.c 5.11 (Berkeley) 5/21/91
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: opms.c,v 1.18 2008/06/13 08:27:38 cegger Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <sys/poll.h>
#include <sys/tty.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <machine/bus.h>
#include <machine/kbdreg.h>
#include <machine/mouse.h>
#include <arc/dev/pcconsvar.h>
#include <arc/dev/opmsvar.h>
#include "ioconf.h"
#define PMSUNIT(dev) (minor(dev))
/* status bits */
#define PMS_OBUF_FULL 0x01
#define PMS_IBUF_FULL 0x02
/* controller commands */
#define PMS_INT_ENABLE 0x47 /* enable controller interrupts */
#define PMS_INT_DISABLE 0x65 /* disable controller interrupts */
#define PMS_AUX_ENABLE 0xa7 /* enable auxiliary port */
#define PMS_AUX_DISABLE 0xa8 /* disable auxiliary port */
#define PMS_MAGIC_1 0xa9 /* XXX */
#define PMS_8042_CMD 0x65
/* mouse commands */
#define PMS_SET_SCALE11 0xe6 /* set scaling 1:1 */
#define PMS_SET_SCALE21 0xe7 /* set scaling 2:1 */
#define PMS_SET_RES 0xe8 /* set resolution */
#define PMS_GET_SCALE 0xe9 /* get scaling factor */
#define PMS_SET_STREAM 0xea /* set streaming mode */
#define PMS_SET_SAMPLE 0xf3 /* set sampling rate */
#define PMS_DEV_ENABLE 0xf4 /* mouse on */
#define PMS_DEV_DISABLE 0xf5 /* mouse off */
#define PMS_RESET 0xff /* reset */
#define PMS_CHUNK 128 /* chunk size for read */
#define PMS_BSIZE 1020 /* buffer size */
#define FLUSHQ(q) { if((q)->c_cc) ndflush(q, (q)->c_cc); }
dev_type_open(opmsopen);
dev_type_close(opmsclose);
dev_type_read(opmsread);
dev_type_ioctl(opmsioctl);
dev_type_poll(opmspoll);
dev_type_kqfilter(opmskqfilter);
const struct cdevsw opms_cdevsw = {
opmsopen, opmsclose, opmsread, nowrite, opmsioctl,
nostop, notty, opmspoll, nommap, opmskqfilter,
};
static inline void pms_dev_cmd(uint8_t);
static inline void pms_aux_cmd(uint8_t);
static inline void pms_pit_cmd(uint8_t);
static inline void
pms_dev_cmd(uint8_t value)
{
kbd_flush_input();
kbd_cmd_write_1(0xd4);
kbd_flush_input();
kbd_data_write_1(value);
}
static inline void
pms_aux_cmd(uint8_t value)
{
kbd_flush_input();
kbd_cmd_write_1(value);
}
static inline void
pms_pit_cmd(uint8_t value)
{
kbd_flush_input();
kbd_cmd_write_1(0x60);
kbd_flush_input();
kbd_data_write_1(value);
}
int opms_common_match(bus_space_tag_t kbd_iot, struct pccons_config *config)
{
uint8_t x;
kbd_context_init(kbd_iot, config);
pms_dev_cmd(KBC_RESET);
pms_aux_cmd(PMS_MAGIC_1);
delay(10000);
x = kbd_data_read_1();
pms_pit_cmd(PMS_INT_DISABLE);
if (x & 0x04)
return 0;
return 1;
}
void
opms_common_attach(struct opms_softc *sc, bus_space_tag_t opms_iot,
struct pccons_config *config)
{
kbd_context_init(opms_iot, config);
selinit(&sc->sc_rsel);
/* Other initialization was done by opmsprobe. */
sc->sc_state = 0;
}
int
opmsopen(dev_t dev, int flag, int mode, struct lwp *l)
{
struct opms_softc *sc;
sc = device_lookup_private(&opms_cd, PMSUNIT(dev));
if (!sc)
return ENXIO;
if (sc->sc_state & PMS_OPEN)
return EBUSY;
if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1)
return ENOMEM;
sc->sc_state |= PMS_OPEN;
sc->sc_status = 0;
sc->sc_x = sc->sc_y = 0;
/* Enable interrupts. */
pms_dev_cmd(PMS_DEV_ENABLE);
pms_aux_cmd(PMS_AUX_ENABLE);
pms_dev_cmd(PMS_SET_RES);
pms_dev_cmd(3); /* 8 counts/mm */
pms_dev_cmd(PMS_SET_SCALE21);
#if 0
pms_dev_cmd(PMS_SET_SAMPLE);
pms_dev_cmd(100); /* 100 samples/sec */
pms_dev_cmd(PMS_SET_STREAM);
#endif
pms_pit_cmd(PMS_INT_ENABLE);
return 0;
}
int
opmsclose(dev_t dev, int flag, int mode, struct lwp *l)
{
struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev));
/* Disable interrupts. */
pms_dev_cmd(PMS_DEV_DISABLE);
pms_pit_cmd(PMS_INT_DISABLE);
pms_aux_cmd(PMS_AUX_DISABLE);
sc->sc_state &= ~PMS_OPEN;
clfree(&sc->sc_q);
return 0;
}
int
opmsread(dev_t dev, struct uio *uio, int flag)
{
struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev));
int s;
int error = 0;
size_t length;
u_char buffer[PMS_CHUNK];
/* Block until mouse activity occurred. */
s = spltty();
while (sc->sc_q.c_cc == 0) {
if (flag & IO_NDELAY) {
splx(s);
return EWOULDBLOCK;
}
sc->sc_state |= PMS_ASLP;
error = tsleep((void *)sc, PZERO | PCATCH, "pmsrea", 0);
if (error) {
sc->sc_state &= ~PMS_ASLP;
splx(s);
return error;
}
}
splx(s);
/* Transfer as many chunks as possible. */
while (sc->sc_q.c_cc > 0 && uio->uio_resid > 0) {
length = min(sc->sc_q.c_cc, uio->uio_resid);
if (length > sizeof(buffer))
length = sizeof(buffer);
/* Remove a small chunk from the input queue. */
(void) q_to_b(&sc->sc_q, buffer, length);
/* Copy the data to the user process. */
error = uiomove(buffer, length, uio);
if (error)
break;
}
return error;
}
int
opmsioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
{
struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev));
struct mouseinfo info;
int s;
int error;
switch (cmd) {
case MOUSEIOCREAD:
s = spltty();
info.status = sc->sc_status;
if (sc->sc_x || sc->sc_y)
info.status |= MOVEMENT;
if (sc->sc_x > 127)
info.xmotion = 127;
else if (sc->sc_x < -127)
/* Bounding at -127 avoids a bug in XFree86. */
info.xmotion = -127;
else
info.xmotion = sc->sc_x;
if (sc->sc_y > 127)
info.ymotion = 127;
else if (sc->sc_y < -127)
info.ymotion = -127;
else
info.ymotion = sc->sc_y;
/* Reset historical information. */
sc->sc_x = sc->sc_y = 0;
sc->sc_status &= ~BUTCHNGMASK;
ndflush(&sc->sc_q, sc->sc_q.c_cc);
splx(s);
error = copyout(&info, addr, sizeof(struct mouseinfo));
break;
default:
error = EINVAL;
break;
}
return error;
}
/* Masks for the first byte of a packet */
#define PS2LBUTMASK 0x01
#define PS2RBUTMASK 0x02
#define PS2MBUTMASK 0x04
int
opmsintr(void *arg)
{
struct opms_softc *sc = arg;
static int state = 0;
static u_char buttons;
u_char changed;
static char dx, dy;
u_char buffer[5];
if ((sc->sc_state & PMS_OPEN) == 0) {
/* Interrupts are not expected. Discard the byte. */
kbd_flush_input();
return 0;
}
switch (state) {
case 0:
buttons = kbd_data_read_1();
if ((buttons & 0xc0) == 0)
++state;
break;
case 1:
dx = kbd_data_read_1();
/* Bounding at -127 avoids a bug in XFree86. */
dx = (dx == -128) ? -127 : dx;
++state;
break;
case 2:
dy = kbd_data_read_1();
dy = (dy == -128) ? -127 : dy;
state = 0;
buttons = ((buttons & PS2LBUTMASK) << 2) |
((buttons & (PS2RBUTMASK | PS2MBUTMASK)) >> 1);
changed = ((buttons ^ sc->sc_status) & BUTSTATMASK) << 3;
sc->sc_status = buttons | (sc->sc_status & ~BUTSTATMASK) |
changed;
if (dx || dy || changed) {
/* Update accumulated movements. */
sc->sc_x += dx;
sc->sc_y += dy;
/* Add this event to the queue. */
buffer[0] = 0x80 | (buttons & BUTSTATMASK);
if(dx < 0)
buffer[0] |= 0x10;
buffer[1] = dx & 0x7f;
if(dy < 0)
buffer[0] |= 0x20;
buffer[2] = dy & 0x7f;
buffer[3] = buffer[4] = 0;
(void) b_to_q(buffer, sizeof buffer, &sc->sc_q);
if (sc->sc_state & PMS_ASLP) {
sc->sc_state &= ~PMS_ASLP;
wakeup((void *)sc);
}
selnotify(&sc->sc_rsel, 0, 0);
}
break;
}
return -1;
}
int
opmspoll(dev_t dev, int events, struct lwp *l)
{
struct opms_softc *sc = device_lookup_private(&opms_cd, 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(l, &sc->sc_rsel);
}
splx(s);
return revents;
}
static void
filt_opmsrdetach(struct knote *kn)
{
struct opms_softc *sc = kn->kn_hook;
int s;
s = spltty();
SLIST_REMOVE(&sc->sc_rsel.sel_klist, kn, knote, kn_selnext);
splx(s);
}
static int
filt_opmsread(struct knote *kn, long hint)
{
struct opms_softc *sc = kn->kn_hook;
kn->kn_data = sc->sc_q.c_cc;
return kn->kn_data > 0;
}
static const struct filterops opmsread_filtops =
{ 1, NULL, filt_opmsrdetach, filt_opmsread };
int
opmskqfilter(dev_t dev, struct knote *kn)
{
struct opms_softc *sc = device_lookup_private(&opms_cd, PMSUNIT(dev));
struct klist *klist;
int s;
switch (kn->kn_filter) {
case EVFILT_READ:
klist = &sc->sc_rsel.sel_klist;
kn->kn_fop = &opmsread_filtops;
break;
default:
return 1;
}
kn->kn_hook = sc;
s = spltty();
SLIST_INSERT_HEAD(klist, kn, kn_selnext);
splx(s);
return 0;
}