NetBSD/sys/arch/arm32/mainbus/pms.c

613 lines
13 KiB
C

/* $NetBSD: pms.c,v 1.1 1996/03/28 21:50:19 mark Exp $ */
/*-
* Copyright (c) 1996 D.C. Tsen
* Copyright (c) 1994 Charles 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.
* 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 RiscBSD team.
* 4. 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 AUTHORS ``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 AUTHORS 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.
*
* from:pms.c,v 1.24 1995/12/24 02:30:28 mycroft Exp
*/
/*
* Ported from 386 version of PS/2 mouse driver.
* D.C. Tsen
*/
#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/signalvar.h>
#include <sys/vnode.h>
#include <sys/device.h>
#include <machine/cpu.h>
#include <machine/katelib.h>
#include <machine/irqhandler.h>
#include <machine/iomd.h>
#include <machine/mouse.h>
#include <arm32/mainbus/mainbus.h>
/* 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 (20*64) /* buffer size */
struct pms_softc { /* driver status information */
struct device sc_dev;
irqhandler_t sc_ih;
struct proc *proc;
struct clist sc_q;
struct selinfo sc_rsel;
u_int sc_state; /* mouse driver state */
#define PMS_OPEN 0x01 /* device is open */
#define PMS_ASLP 0x02 /* waiting for mouse data */
u_int sc_status; /* mouse button status */
int sc_x, sc_y; /* accumulated motion in the X,Y axis */
int boundx, boundy, bounda, boundb; /* Bounding box. x,y is bottom left */
int origx, origy;
int lastx, lasty, lastb;
};
int pmsprobe __P((struct device *, void *, void *));
void pmsattach __P((struct device *, struct device *, void *));
int pmsintr __P((void *));
struct cfattach pms_ca = {
sizeof(struct pms_softc), pmsprobe, pmsattach
};
struct cfdriver pms_cd = {
NULL, "pms", DV_DULL
};
#define PMSUNIT(dev) (minor(dev))
static inline void
pms_flush()
{
while (inb(IOMD_MSCR) & 0x20) {
delay(6);
(void) inb(IOMD_MSDATA);
delay(6);
(void) inb(IOMD_MSDATA);
delay(6);
(void) inb(IOMD_MSDATA);
}
}
static void
cmd_mouse(unsigned char cmd)
{
unsigned char c;
int i = 0;
int retry = 10;
for (i = 0; i < 1000; i++) {
if (inb(IOMD_MSCR) & 0x80)
break;
delay(2);
}
if (i == 1000)
printf("Mouse transmit not ready\n");
resend:
outb(IOMD_MSDATA, cmd);
delay(2);
c = inb(IOMD_MSCR) & (unsigned char) 0xff;
while (!(c & (unsigned char) 0x20)) {
delay(1);
c = inb(IOMD_MSCR);
}
delay(10000);
c = inb(IOMD_MSDATA) & 0xff;
if ((c == 0xFA) || (c == 0xEE))
return;
if (--retry) {
pms_flush();
goto resend;
}
printf("Mouse cmd failed, cmd = %x, status = %x\n", cmd, c);
return;
}
int
pmsprobe(parent, match, aux)
struct device *parent;
void *match, *aux;
{
/*struct mainbus_attach_args *mb = aux;*/
int i, j;
int mid;
int id;
/* Make sure we have an IOMD we understand */
id = ReadByte(IOMD_ID0) | (ReadByte(IOMD_ID1) << 8);
/* So far I only know about this IOMD */
switch (id) {
case RPC600_IOMD_ID:
return(0);
break;
case RC7500_IOC_ID:
break;
default:
printf("pms: Unknown IOMD id=%04x", id);
return(0);
break;
}
outb(IOMD_MSCR, 0x08); /* enable the mouse */
i = 0;
while ((inb(IOMD_MSCR) & 0x03) != 0x03) {
if (i++ > 10) {
printf("Mouse not found, status = <%x>.\n", inb(IOMD_MSCR));
return(0);
}
pms_flush();
delay(2);
outb(IOMD_MSCR, 0x08);
}
pms_flush();
/*
* Disable, reset and enable the mouse.
*/
cmd_mouse(PMS_DEV_DISABLE);
cmd_mouse(PMS_RESET);
delay(300000);
j = 10;
i = 0;
while ((mid = inb(IOMD_MSDATA)) != 0xAA) {
if (++i > 500) {
if (--j < 0) {
printf("Mouse Reset failed, status = <%x>.\n", mid);
return(0);
}
pms_flush();
cmd_mouse(PMS_RESET);
i = 0;
}
delay(100000);
}
mid = inb(IOMD_MSDATA);
#if 0
cmd_mouse(PMS_SET_RES);
cmd_mouse(3); /* 8 counts/mm */
cmd_mouse(PMS_SET_SCALE21);
cmd_mouse(PMS_SET_SAMPLE);
cmd_mouse(100); /* 100 samples/sec */
cmd_mouse(PMS_SET_STREAM);
#endif
cmd_mouse(PMS_DEV_ENABLE);
return 1;
}
void
pmsattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pms_softc *sc = (void *)self;
struct mainbus_attach_args *mb = aux;
printf("\n");
/* Other initialization was done by pmsprobe. */
sc->sc_state = 0;
sc->origx = 0;
sc->origy = 0;
sc->boundx = -4095;
sc->boundy = -4095;
sc->bounda = 4096;
sc->boundb = 4096;
sc->sc_ih.ih_func = pmsintr;
sc->sc_ih.ih_arg = sc;
sc->sc_ih.ih_level = IPL_TTY;
sc->sc_ih.ih_name = "pms";
if (mb->mb_irq != IRQUNK)
sc->sc_ih.ih_num = mb->mb_irq;
else
#ifdef RC7500
sc->sc_ih.ih_num = IRQ_MSDRX;
#else
panic("pms: No IRQ specified for pms interrupt handler\n");
#endif
}
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->proc = p;
sc->sc_state |= PMS_OPEN;
sc->sc_status = 0;
sc->sc_x = sc->sc_y = 0;
sc->lastx = -1;
sc->lasty = -1;
sc->lastb = -1;
if (irq_claim(IRQ_INSTRUCT, &sc->sc_ih) == -1)
panic("Cannot claim MOUSE IRQ\n");
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)];
if (irq_release(IRQ_INSTRUCT, &sc->sc_ih) != 0)
panic("Cannot release MOUSE IRQ\n");
sc->proc = NULL;
sc->sc_state &= ~PMS_OPEN;
sc->sc_x = sc->sc_y = 0;
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;
if (error = tsleep((caddr_t)sc, (PZERO | PCATCH), "pmsread", 0)) {
sc->sc_state &= ~PMS_ASLP;
splx(s);
return error;
}
}
/* 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))
break;
}
splx(s);
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 = 0;
s = spltty();
switch (cmd) {
case MOUSEIOC_SETSTATE:
printf("MOUSEIOC_SETSTATE called\n");
break;
case MOUSEIOC_WRITEX:
sc->sc_x = *(int *) addr;
break;
case MOUSEIOC_WRITEY:
sc->sc_y = *(int *) addr;
break;
case MOUSEIOC_SETBOUNDS:
{
register struct mouse_boundingbox *bo = (void *) addr;
sc->boundx = bo->x; sc->boundy = bo->y;
sc->bounda = bo->a; sc->boundb = bo->b;
break;
}
case MOUSEIOC_SETORIGIN:
{
register struct mouse_origin *oo = (void *) addr;
sc->origx = oo->x;
sc->origy = oo->y;
break;
}
case MOUSEIOC_GETBOUNDS:
{
register struct mouse_boundingbox *bo = (void *) addr;
bo->x = sc->boundx; bo->y = sc->boundy;
bo->a = sc->bounda; bo->b = sc->boundb;
break;
}
case MOUSEIOC_GETORIGIN:
{
register struct mouse_origin *oo = (void *) addr;
oo->x = sc->origx;
oo->y = sc->origy;
break;
}
case MOUSEIOC_GETSTATE:
printf("MOUSEIOC_GETSTATE called\n");
/*
* Fall through.
*/
/* case MOUSEIOCREAD:*/
info.status = sc->sc_status;
if (sc->sc_x || sc->sc_y)
info.status |= MOVEMENT;
#if 1
info.xmotion = sc->sc_x;
info.ymotion = sc->sc_y;
#else
if (sc->sc_x > sc->bounda)
info.xmotion = sc->bounda;
else if (sc->sc_x < sc->boundx)
info.xmotion = sc->boundx;
else
info.xmotion = sc->sc_x;
if (sc->sc_y > sc->boundb)
info.ymotion = sc->boundb;
else if (sc->sc_y < sc->boundy)
info.ymotion = sc->boundy;
else
info.ymotion = sc->sc_y;
#endif
/* Reset historical information. */
sc->sc_x = sc->sc_y = 0;
sc->sc_status &= ~BUTCHNGMASK;
ndflush(&sc->sc_q, sc->sc_q.c_cc);
error = copyout(&info, addr, sizeof(struct mouseinfo));
break;
default:
error = EINVAL;
break;
}
splx(s);
return error;
}
/* Masks for the first byte of a packet */
#define PS2LBUTMASK 0x01
#define PS2RBUTMASK 0x02
#define PS2MBUTMASK 0x04
#define XNEG_MASK 0x10
#define YNEG_MASK 0x20
int
pmsintr(arg)
void *arg;
{
struct pms_softc *sc = arg;
static int state = 0;
static u_char buttons;
u_char changed;
static int dx, dy;
int dosignal = 0;
int s;
u_char b;
struct mousebufrec mbuffer;
if ((sc->sc_state & PMS_OPEN) == 0) {
/* Interrupts are not expected. Discard the byte. */
pms_flush();
return(-1);
}
switch (state) {
case 0:
buttons = inb(IOMD_MSDATA);
if ((buttons & 0xc0) == 0)
++state;
break;
case 1:
dx = inb(IOMD_MSDATA);
dx = (buttons & XNEG_MASK) ? -dx : dx;
++state;
break;
case 2:
dy = inb(IOMD_MSDATA);
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))?0:0x40);
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;
selwakeup(&sc->sc_rsel);
if (sc->sc_state & PMS_ASLP) {
sc->sc_state &= ~PMS_ASLP;
wakeup((caddr_t)sc);
}
if (dosignal)
psignal(sc->proc, SIGIO);
}
break;
}
return(0);
}
int
pmsselect(dev, rw, p)
dev_t dev;
int rw;
struct proc *p;
{
struct pms_softc *sc = pms_cd.cd_devs[PMSUNIT(dev)];
int s;
int ret;
if (rw == FWRITE)
return 0;
s = spltty();
if (!sc->sc_q.c_cc) {
selrecord(p, &sc->sc_rsel);
ret = 0;
} else
ret = 1;
splx(s);
return ret;
}