478 lines
10 KiB
C
478 lines
10 KiB
C
/* $NetBSD: pms.c,v 1.5 1998/08/15 03:02:37 mycroft Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1994 Charles M. Hannum.
|
|
* Copyright (c) 1992, 1993 Erik Forsberg.
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ``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 I 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.
|
|
*/
|
|
|
|
/*
|
|
* XXXX
|
|
* This is a hack. This driver should really be combined with the
|
|
* keyboard driver, since they go through the same buffer and use the
|
|
* same I/O ports. Frobbing the mouse and keyboard at the same time
|
|
* may result in dropped characters and/or corrupted mouse events.
|
|
*/
|
|
|
|
#include "pms.h"
|
|
#if NPMS > 1
|
|
#error Only one PS/2 style mouse may be configured into your system.
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/file.h>
|
|
#include <sys/select.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/device.h>
|
|
#include <sys/poll.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/intr.h>
|
|
#include <machine/pio.h>
|
|
#include <machine/mouse.h>
|
|
#include <machine/conf.h>
|
|
|
|
#include <dev/isa/isavar.h>
|
|
|
|
#define PMS_DATA 0x60 /* offset for data port, read-write */
|
|
#define PMS_CNTRL 0x64 /* offset for control port, write-only */
|
|
#define PMS_STATUS 0x64 /* offset for status port, read-only */
|
|
#define PMS_NPORTS 8
|
|
|
|
/* 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 0xa8 /* enable auxiliary port */
|
|
#define PMS_AUX_DISABLE 0xa7 /* disable auxiliary port */
|
|
#define PMS_AUX_TEST 0xa9 /* test auxiliary port */
|
|
|
|
#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 */
|
|
|
|
struct pms_softc { /* driver status information */
|
|
struct device sc_dev;
|
|
void *sc_ih;
|
|
|
|
struct clist sc_q;
|
|
struct selinfo sc_rsel;
|
|
u_char sc_state; /* mouse driver state */
|
|
#define PMS_OPEN 0x01 /* device is open */
|
|
#define PMS_ASLP 0x02 /* waiting for mouse data */
|
|
u_char sc_status; /* mouse button status */
|
|
int sc_x, sc_y; /* accumulated motion in the X,Y axis */
|
|
};
|
|
|
|
int pmsprobe __P((struct device *, struct cfdata *, void *));
|
|
void pmsattach __P((struct device *, struct device *, void *));
|
|
int pmsintr __P((void *));
|
|
|
|
struct cfattach pms_ca = {
|
|
sizeof(struct pms_softc), pmsprobe, pmsattach,
|
|
};
|
|
|
|
extern struct cfdriver pms_cd;
|
|
|
|
#define PMSUNIT(dev) (minor(dev))
|
|
|
|
static __inline void pms_flush __P((void));
|
|
static __inline void pms_dev_cmd __P((u_char));
|
|
static __inline void pms_pit_cmd __P((u_char));
|
|
static __inline void pms_aux_cmd __P((u_char));
|
|
|
|
static __inline void
|
|
pms_flush()
|
|
{
|
|
u_char c;
|
|
|
|
while ((c = isa_inb(PMS_STATUS) & 0x03) != 0)
|
|
if ((c & PMS_OBUF_FULL) == PMS_OBUF_FULL) {
|
|
/* XXX - delay is needed to prevent some keyboards from
|
|
wedging when the system boots */
|
|
delay(6);
|
|
(void) isa_inb(PMS_DATA);
|
|
}
|
|
}
|
|
|
|
static __inline void
|
|
pms_dev_cmd(value)
|
|
u_char value;
|
|
{
|
|
|
|
pms_flush();
|
|
isa_outb(PMS_CNTRL, 0xd4);
|
|
pms_flush();
|
|
isa_outb(PMS_DATA, value);
|
|
}
|
|
|
|
static __inline void
|
|
pms_aux_cmd(value)
|
|
u_char value;
|
|
{
|
|
|
|
pms_flush();
|
|
isa_outb(PMS_CNTRL, value);
|
|
}
|
|
|
|
static __inline void
|
|
pms_pit_cmd(value)
|
|
u_char value;
|
|
{
|
|
|
|
pms_flush();
|
|
isa_outb(PMS_CNTRL, 0x60);
|
|
pms_flush();
|
|
isa_outb(PMS_DATA, value);
|
|
}
|
|
|
|
/*
|
|
* XXX needs more work yet. We should have a `pckbd_attach_args' that
|
|
* provides the parent's io port and our irq.
|
|
*/
|
|
int
|
|
pmsprobe(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
u_char x;
|
|
|
|
/*
|
|
* We only attach to the keyboard controller via
|
|
* the console drivers. (We really wish we could be the
|
|
* child of a real keyboard controller driver.)
|
|
*/
|
|
if ((parent == NULL) ||
|
|
((strcmp(parent->dv_cfdata->cf_driver->cd_name, "pc") != 0) &&
|
|
(strcmp(parent->dv_cfdata->cf_driver->cd_name, "vt") != 0)))
|
|
return (0);
|
|
|
|
/* Can't wildcard IRQ. */
|
|
if (match->cf_loc[0] == -1)
|
|
return (0);
|
|
|
|
pms_dev_cmd(PMS_RESET);
|
|
pms_aux_cmd(PMS_AUX_TEST);
|
|
delay(1000);
|
|
x = isa_inb(PMS_DATA);
|
|
pms_pit_cmd(PMS_INT_DISABLE);
|
|
if (x & 0x04)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
pmsattach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct pms_softc *sc = (void *)self;
|
|
int irq = self->dv_cfdata->cf_loc[0];
|
|
isa_chipset_tag_t ic = aux; /* XXX */
|
|
|
|
printf(" irq %d\n", irq);
|
|
|
|
/* Other initialization was done by pmsprobe. */
|
|
sc->sc_state = 0;
|
|
|
|
sc->sc_ih = isa_intr_establish(ic, irq, IST_EDGE, IPL_TTY,
|
|
pmsintr, sc);
|
|
}
|
|
|
|
int
|
|
pmsopen(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
int unit = PMSUNIT(dev);
|
|
struct pms_softc *sc;
|
|
|
|
if (unit >= pms_cd.cd_ndevs)
|
|
return ENXIO;
|
|
sc = pms_cd.cd_devs[unit];
|
|
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);
|
|
#if 0
|
|
pms_dev_cmd(PMS_SET_RES);
|
|
pms_dev_cmd(3); /* 8 counts/mm */
|
|
pms_dev_cmd(PMS_SET_SCALE21);
|
|
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
|
|
pmsclose(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
struct pms_softc *sc = pms_cd.cd_devs[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
|
|
pmsread(dev, uio, flag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flag;
|
|
{
|
|
struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)];
|
|
int s;
|
|
int error = 0;
|
|
size_t length;
|
|
u_char buffer[PMS_CHUNK];
|
|
|
|
/* Block until mouse activity occured. */
|
|
|
|
s = spltty();
|
|
while (sc->sc_q.c_cc == 0) {
|
|
if (flag & IO_NDELAY) {
|
|
splx(s);
|
|
return EWOULDBLOCK;
|
|
}
|
|
sc->sc_state |= PMS_ASLP;
|
|
error = tsleep((caddr_t)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. */
|
|
if ((error = uiomove(buffer, length, uio)) != 0)
|
|
break;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
int
|
|
pmsioctl(dev, cmd, addr, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
caddr_t addr;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
struct pms_softc *sc = pms_cd.cd_devs[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
|
|
pmsintr(arg)
|
|
void *arg;
|
|
{
|
|
struct pms_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. */
|
|
pms_flush();
|
|
return 0;
|
|
}
|
|
|
|
switch (state) {
|
|
|
|
case 0:
|
|
buttons = isa_inb(PMS_DATA);
|
|
if ((buttons & 0xc0) == 0)
|
|
++state;
|
|
break;
|
|
|
|
case 1:
|
|
dx = isa_inb(PMS_DATA);
|
|
/* Bounding at -127 avoids a bug in XFree86. */
|
|
dx = (dx == -128) ? -127 : dx;
|
|
++state;
|
|
break;
|
|
|
|
case 2:
|
|
dy = isa_inb(PMS_DATA);
|
|
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);
|
|
buffer[1] = dx;
|
|
buffer[2] = dy;
|
|
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((caddr_t)sc);
|
|
}
|
|
selwakeup(&sc->sc_rsel);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
pmspoll(dev, events, p)
|
|
dev_t dev;
|
|
int events;
|
|
struct proc *p;
|
|
{
|
|
struct pms_softc *sc = pms_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);
|
|
|
|
splx(s);
|
|
return (revents);
|
|
}
|