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

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/* $NetBSD: pms.c,v 1.22 2001/03/18 17:00:56 rearnsha Exp $ */
/*-
* Copyright (c) 1996 D.C. Tsen
* 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.
* 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 <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 <sys/poll.h>
#include <machine/bus.h>
#include <machine/conf.h>
#include <machine/mouse.h>
#include <arm32/dev/pmsvar.h>
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#define MOUSE_IOC_ACK
/* 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 */
/* function prototypes */
void pmswatchdog __P((void *));
#ifdef MOUSE_IOC_ACK
static void pmsputbuffer __P((struct pms_softc *sc, struct mousebufrec *buf));
#endif
static __inline void pms_flush __P((struct pms_softc *sc));
extern struct cfdriver opms_cd;
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/* pms device driver structure */
#define PMS_DATA 0
#define PMS_CR 1
#define PMS_STATUS 1
#define PMS_CR_ENABLE 0x08
#define PMS_CR_KDATAO 0x02
#define PMS_CR_KCLKO 0x01
#define PMS_ST_TXE 0x80
#define PMS_ST_TXB 0x40
#define PMS_ST_RXF 0x20
#define PMS_ST_RXB 0x10
#define PMS_ST_ENABLE 0x08
#define PMS_ST_RXPARITY 0x04
#define PMS_ST_KDATAI 0x02
#define PMS_ST_KCLKI 0x01
#define PMSUNIT(dev) (minor(dev))
/*
* Flush any pending mouse data
*/
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static __inline void
pms_flush(sc)
struct pms_softc *sc;
{
int n = 1000;
while (n-- && (bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS)
& PMS_ST_RXF)) {
delay(6);
(void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
delay(6);
(void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
delay(6);
(void) bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
}
}
/*
* Send a command to the mouse
*/
static int
cmd_mouse(sc, cmd)
struct pms_softc * sc;
u_char cmd;
{
int c;
int i = 0;
int retry = 10;
for (i = 0; i < 1000; i++) {
if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & PMS_ST_TXE)
break;
delay(2);
}
if (i == 1000)
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printf("Mouse transmit not ready\n");
resend:
bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_DATA, cmd);
delay(2);
c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS);
i = 1000;
while (i-- && !(c & PMS_ST_RXF)) {
delay(1);
c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS);
}
delay(10000);
c = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
if ((c == 0xFA) || (c == 0xEE))
return(0);
if (--retry) {
pms_flush(sc);
goto resend;
}
printf("%s: Mouse cmd failed, cmd = %x, status = %x\n", sc->sc_dev.dv_xname, cmd, c);
return(1);
}
/*
* initialise the mouse
*
*
* The sets up parts of the softc and then tests the mouse
* to make sure it is responding.
* It then configures the mouse as required.
*/
int
pmsinit(sc)
struct pms_softc *sc;
{
int i, j;
int mid;
/* Set up softc */
callout_init(&sc->sc_watchdog_ch);
sc->sc_state = 0;
sc->origx = 0;
sc->origy = 0;
sc->boundx = -4095;
sc->boundy = -4095;
sc->bounda = 4096;
sc->boundb = 4096;
/* Enable the mouse */
bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_CR, PMS_CR_ENABLE);
i = 0;
while ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & 0x03)
!= 0x03) {
if (i++ > 10) {
printf("Mouse not found, status = <%x>.\n",
bus_space_read_1(sc->sc_iot, sc->sc_ioh,
PMS_STATUS));
return(0);
}
pms_flush(sc);
delay(2);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, PMS_CR, PMS_CR_ENABLE);
}
pms_flush(sc);
/*
* Disable, reset and enable the mouse.
*/
if (cmd_mouse(sc, PMS_DEV_DISABLE))
return(0);
cmd_mouse(sc, PMS_RESET);
delay(300000);
j = 10;
i = 0;
while ((mid = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA)) != 0xAA) {
if (++i > 500) {
if (--j < 0) {
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printf("Mouse Reset failed, status = <%x>.\n", mid);
return(0);
}
pms_flush(sc);
cmd_mouse(sc, PMS_RESET);
i = 0;
}
delay(100000);
}
mid = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
#if 0
cmd_mouse(sc, PMS_SET_RES);
cmd_mouse(sc, 3); /* 8 counts/mm */
cmd_mouse(sc, PMS_SET_SCALE21);
#endif
cmd_mouse(sc, PMS_SET_SAMPLE);
cmd_mouse(sc, 40); /* 40 samples/sec */
cmd_mouse(sc, PMS_SET_STREAM);
cmd_mouse(sc, PMS_DEV_ENABLE);
return(1);
}
/*
* device open routine
*/
int
pmsopen(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
int unit = PMSUNIT(dev);
struct pms_softc *sc;
/* validate the unit and the softc */
if (unit >= opms_cd.cd_ndevs)
return ENXIO;
sc = opms_cd.cd_devs[unit];
if (!sc)
return ENXIO;
/* Are we already open ? */
if (sc->sc_state & PMS_OPEN)
return EBUSY;
/* initialise buffer */
if (clalloc(&sc->sc_q, PMS_BSIZE, 0) == -1)
return ENOMEM;
/* set up the softc structure */
sc->sc_proc = p;
sc->sc_mode = MOUSEMODE_ABS;
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;
/* enable interrupts */
sc->sc_intenable(sc, 1);
/* install watchdog timeout */
callout_reset(&sc->sc_watchdog_ch, 30 * hz,
pmswatchdog, sc);
return(0);
}
/*
* driver close function
*/
int
pmsclose(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
struct pms_softc *sc = opms_cd.cd_devs[PMSUNIT(dev)];
/* remove the timeout */
callout_stop(&sc->sc_watchdog_ch);
/* disable interrupts */
sc->sc_intenable(sc, 0);
/* clean up*/
sc->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 = opms_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) {
(void)splx(s);
return EWOULDBLOCK;
}
sc->sc_state |= PMS_ASLP;
if ((error = tsleep((caddr_t)sc, (PZERO | PCATCH), "pmsread", 0))) {
sc->sc_state &= ~PMS_ASLP;
(void)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;
}
(void)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 = opms_cd.cd_devs[PMSUNIT(dev)];
struct mouseinfo info;
int s;
int error = 0;
s = spltty();
switch (cmd) {
case MOUSEIOC_SETSTATE:
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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;
struct mousebufrec buffer;
sc->boundx = bo->x; sc->boundy = bo->y;
sc->bounda = bo->a; sc->boundb = bo->b;
buffer.status = IOC_ACK;
buffer.x = sc->origx;
buffer.y = sc->origy;
#ifdef MOUSE_IOC_ACK
pmsputbuffer(sc, &buffer);
#endif
break;
}
case MOUSEIOC_SETMODE:
{
struct mousebufrec buffer;
sc->sc_mode = *(int *)addr;
buffer.status = IOC_ACK;
buffer.x = sc->origx;
buffer.y = sc->origy;
#ifdef MOUSE_IOC_ACK
if (sc->sc_q.c_cc > 0)
printf("%s: setting mode with non empty buffer (%d)\n",
sc->sc_dev.dv_xname, sc->sc_q.c_cc);
pmsputbuffer(sc, &buffer);
#endif
break;
}
case MOUSEIOC_SETORIGIN:
{
register struct mouse_origin *oo = (void *) addr;
struct mousebufrec buffer;
sc->origx = oo->x;
sc->origy = oo->y;
buffer.status = IOC_ACK;
buffer.x = sc->origx;
buffer.y = sc->origy;
#ifdef MOUSE_IOC_ACK
pmsputbuffer(sc, &buffer);
#endif
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:
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;
}
(void)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(sc);
return(-1); /* Could have been ours but pass it on */
}
switch (state) {
case 0:
buttons = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
if ((buttons & 0xc0) == 0)
++state;
break;
case 1:
dx = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
dx = (buttons & XNEG_MASK) ? -dx : dx;
++state;
break;
case 2:
dy = bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_DATA);
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:MOVEMENT);
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;
if(sc->sc_mode == MOUSEMODE_REL) {
sc->origx = sc->origy = 0;
sc->sc_x = sc->sc_y = 0;
}
selwakeup(&sc->sc_rsel);
if (sc->sc_state & PMS_ASLP) {
sc->sc_state &= ~PMS_ASLP;
wakeup((caddr_t)sc);
}
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/* if (dosignal)*/
psignal(sc->sc_proc, SIGIO);
}
break;
}
return(1); /* Claim interrupt */
}
int
pmspoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
struct pms_softc *sc = opms_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);
}
(void)splx(s);
return (revents);
}
void
pmswatchdog(arg)
void *arg;
{
struct pms_softc *sc = arg;
int s;
if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, PMS_STATUS) & 0x03)
!= 0x03) {
printf("%s: Mouse is dead (%x), restart it\n",
sc->sc_dev.dv_xname, bus_space_read_1(sc->sc_iot,
sc->sc_ioh, PMS_STATUS));
s = spltty();
pmsinit(sc);
(void)splx(s);
}
}
#ifdef MOUSE_IOC_ACK
static void
pmsputbuffer(sc, buffer)
struct pms_softc *sc;
struct mousebufrec *buffer;
{
int s;
int dosignal = 0;
/* Time stamp the buffer */
microtime(&buffer->event_time);
if (sc->sc_q.c_cc == 0)
dosignal = 1;
s=spltty();
(void)b_to_q((char *)buffer, sizeof(*buffer), &sc->sc_q);
(void)splx(s);
selwakeup(&sc->sc_rsel);
if (sc->sc_state & PMS_ASLP) {
sc->sc_state &= ~PMS_ASLP;
wakeup((caddr_t)sc);
}
if (dosignal)
psignal(sc->sc_proc, SIGIO);
}
#endif
/* End of pms.c */