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ms_hb.c
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ms_hb.c
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/* $NetBSD: ms_hb.c,v 1.16 2021/08/07 16:19:01 thorpej Exp $ */
/*-
* Copyright (c) 2000 Tsubai Masanari. 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.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ms_hb.c,v 1.16 2021/08/07 16:19:01 thorpej Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsmousevar.h>
#include <machine/adrsmap.h>
#include <newsmips/dev/hbvar.h>
struct msreg {
volatile uint8_t ms_data;
volatile uint8_t ms_stat;
volatile uint8_t ms_reset;
volatile uint8_t ms_init;
};
struct ms_hb_softc {
device_t sc_dev;
struct msreg *sc_reg;
device_t sc_wsmousedev;
int sc_ndata;
uint8_t sc_buf[3];
};
int ms_hb_match(device_t, cfdata_t, void *);
void ms_hb_attach(device_t, device_t, void *);
int ms_hb_intr(void *);
int ms_hb_enable(void *);
int ms_hb_ioctl(void *, u_long, void *, int, struct lwp *);
void ms_hb_disable(void *);
CFATTACH_DECL_NEW(ms_hb, sizeof(struct ms_hb_softc),
ms_hb_match, ms_hb_attach, NULL, NULL);
struct wsmouse_accessops ms_hb_accessops = {
ms_hb_enable,
ms_hb_ioctl,
ms_hb_disable
};
int
ms_hb_match(device_t parent, cfdata_t cf, void *aux)
{
struct hb_attach_args *ha = aux;
if (strcmp(ha->ha_name, "ms") == 0)
return 1;
return 0;
}
void
ms_hb_attach(device_t parent, device_t self, void *aux)
{
struct ms_hb_softc *sc = device_private(self);
struct hb_attach_args *ha = aux;
struct msreg *reg;
struct wsmousedev_attach_args aa;
int intr;
sc->sc_dev = self;
reg = (struct msreg *)ha->ha_addr;
intr = ha->ha_level;
if (intr == -1)
intr = 2;
sc->sc_reg = reg;
reg->ms_reset = 0x01;
reg->ms_init = 0x80; /* 1200 bps */
aprint_normal(" level %d\n", intr);
hb_intr_establish(intr, INTEN0_MSINT, IPL_TTY, ms_hb_intr, sc);
aa.accessops = &ms_hb_accessops;
aa.accesscookie = sc;
sc->sc_wsmousedev = config_found(self, &aa, wsmousedevprint, CFARGS_NONE);
}
int
ms_hb_intr(void *v)
{
struct ms_hb_softc *sc = v;
struct msreg *reg = sc->sc_reg;
volatile uint8_t *ien = (void *)INTEN0;
int code, index, byte0, byte1, byte2;
int button, dx, dy;
int rv = 0;
*ien &= ~RX_MSINTE;
while (reg->ms_stat & RX_MSRDY) {
rv = 1;
code = reg->ms_data;
index = sc->sc_ndata;
if (sc->sc_wsmousedev == NULL)
continue;
if (code & 0x80) {
sc->sc_buf[0] = code;
sc->sc_ndata = 1;
continue;
}
if (index == 1) {
sc->sc_buf[1] = code;
sc->sc_ndata++;
continue;
}
if (index == 2) {
sc->sc_buf[2] = code;
sc->sc_ndata++;
byte0 = sc->sc_buf[0];
byte1 = sc->sc_buf[1];
byte2 = sc->sc_buf[2];
button = 0;
if (byte0 & 0x01)
button |= 1;
if (byte0 & 0x04)
button |= 2;
if (byte0 & 0x02)
button |= 4;
if (byte0 & 0x08)
dx = byte1 - 0x80;
else
dx = byte1;
if (byte0 & 0x10)
dy = byte2 - 0x80;
else
dy = byte2;
wsmouse_input(sc->sc_wsmousedev,
button,
dx, -dy, 0, 0,
WSMOUSE_INPUT_DELTA);
}
}
*ien |= RX_MSINTE;
return rv;
}
int
ms_hb_enable(void *v)
{
volatile uint8_t *ien = (void *)INTEN0;
*ien |= RX_MSINTE;
return 0;
}
void
ms_hb_disable(void *v)
{
volatile uint8_t *ien = (void *)INTEN0;
*ien &= ~RX_MSINTE;
}
int
ms_hb_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
{
return EPASSTHROUGH;
}