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freebsd/sys/isa/psm.c
Kazutaka YOKOTA 2b9e6c7549 Fix PS/2 MouseMan+ protocol. We have been looking at a wrong place 
for the sign bit for roller movement!
1999-06-03 12:42:10 +00:00

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/*-
* Copyright (c) 1992, 1993 Erik Forsberg.
* Copyright (c) 1996, 1997 Kazutaka YOKOTA.
* 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.
*
* $Id: psm.c,v 1.10 1999/05/30 16:52:47 phk Exp $
*/
/*
* Ported to 386bsd Oct 17, 1992
* Sandi Donno, Computer Science, University of Cape Town, South Africa
* Please send bug reports to sandi@cs.uct.ac.za
*
* Thanks are also due to Rick Macklem, rick@snowhite.cis.uoguelph.ca -
* although I was only partially successful in getting the alpha release
* of his "driver for the Logitech and ATI Inport Bus mice for use with
* 386bsd and the X386 port" to work with my Microsoft mouse, I nevertheless
* found his code to be an invaluable reference when porting this driver
* to 386bsd.
*
* Further modifications for latest 386BSD+patchkit and port to NetBSD,
* Andrew Herbert <andrew@werple.apana.org.au> - 8 June 1993
*
* Cloned from the Microsoft Bus Mouse driver, also by Erik Forsberg, by
* Andrew Herbert - 12 June 1993
*
* Modified for PS/2 mouse by Charles Hannum <mycroft@ai.mit.edu>
* - 13 June 1993
*
* Modified for PS/2 AUX mouse by Shoji Yuen <yuen@nuie.nagoya-u.ac.jp>
* - 24 October 1993
*
* Hardware access routines and probe logic rewritten by
* Kazutaka Yokota <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* - 3, 14, 22 October 1996.
* - 12 November 1996. IOCTLs and rearranging `psmread', `psmioctl'...
* - 14, 30 November 1996. Uses `kbdio.c'.
* - 13 December 1996. Uses queuing version of `kbdio.c'.
* - January/February 1997. Tweaked probe logic for
* HiNote UltraII/Latitude/Armada laptops.
* - 30 July 1997. Added APM support.
* - 5 March 1997. Defined driver configuration flags (PSM_CONFIG_XXX).
* Improved sync check logic.
* Vendor specific support routines.
*/
#include "psm.h"
#ifdef __i386__
#include "apm.h"
#endif
#include "opt_devfs.h"
#include "opt_psm.h"
#if NPSM > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/poll.h>
#include <sys/syslog.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <sys/rman.h>
#ifdef DEVFS
#include <sys/devfsext.h>
#endif
#include <sys/select.h>
#include <sys/uio.h>
#ifdef __i386__
#include <machine/apm_bios.h>
#endif
#include <machine/clock.h>
#include <machine/limits.h>
#include <machine/mouse.h>
#include <machine/resource.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
#include <dev/kbd/atkbdcreg.h>
/*
* Driver specific options: the following options may be set by
* `options' statements in the kernel configuration file.
*/
/* debugging */
#ifndef PSM_DEBUG
#define PSM_DEBUG 0 /* logging: 0: none, 1: brief, 2: verbose */
#endif
/* features */
/* #define PSM_HOOKAPM hook the APM resume event */
/* #define PSM_RESETAFTERSUSPEND reset the device at the resume event */
#if NAPM <= 0
#undef PSM_HOOKAPM
#endif /* NAPM */
#ifndef PSM_HOOKAPM
#undef PSM_RESETAFTERSUSPEND
#endif /* PSM_HOOKAPM */
/* end of driver specific options */
/* input queue */
#define PSM_BUFSIZE 960
#define PSM_SMALLBUFSIZE 240
/* operation levels */
#define PSM_LEVEL_BASE 0
#define PSM_LEVEL_STANDARD 1
#define PSM_LEVEL_NATIVE 2
#define PSM_LEVEL_MIN PSM_LEVEL_BASE
#define PSM_LEVEL_MAX PSM_LEVEL_NATIVE
/* some macros */
#define PSM_UNIT(dev) (minor(dev) >> 1)
#define PSM_NBLOCKIO(dev) (minor(dev) & 1)
#define PSM_MKMINOR(unit,block) (((unit) << 1) | ((block) ? 0:1))
#ifndef max
#define max(x,y) ((x) > (y) ? (x) : (y))
#endif
#ifndef min
#define min(x,y) ((x) < (y) ? (x) : (y))
#endif
/* ring buffer */
typedef struct ringbuf {
int count; /* # of valid elements in the buffer */
int head; /* head pointer */
int tail; /* tail poiner */
unsigned char buf[PSM_BUFSIZE];
} ringbuf_t;
/* driver control block */
struct psm_softc { /* Driver status information */
struct selinfo rsel; /* Process selecting for Input */
unsigned char state; /* Mouse driver state */
int config; /* driver configuration flags */
int flags; /* other flags */
KBDC kbdc; /* handle to access the keyboard controller */
int addr; /* I/O port address */
mousehw_t hw; /* hardware information */
mousemode_t mode; /* operation mode */
mousemode_t dflt_mode; /* default operation mode */
mousestatus_t status; /* accumulated mouse movement */
ringbuf_t queue; /* mouse status queue */
unsigned char ipacket[16]; /* interim input buffer */
int inputbytes; /* # of bytes in the input buffer */
int button; /* the latest button state */
#ifdef DEVFS
void *devfs_token;
void *b_devfs_token;
#endif
#ifdef PSM_HOOKAPM
struct apmhook resumehook;
#endif
};
devclass_t psm_devclass;
#define PSM_SOFTC(unit) ((struct psm_softc*)devclass_get_softc(psm_devclass, unit))
/* driver state flags (state) */
#define PSM_VALID 0x80
#define PSM_OPEN 1 /* Device is open */
#define PSM_ASLP 2 /* Waiting for mouse data */
/* driver configuration flags (config) */
#define PSM_CONFIG_RESOLUTION 0x000f /* resolution */
#define PSM_CONFIG_ACCEL 0x00f0 /* acceleration factor */
#define PSM_CONFIG_NOCHECKSYNC 0x0100 /* disable sync. test */
#define PSM_CONFIG_NOIDPROBE 0x0200 /* disable mouse model probe */
#define PSM_CONFIG_NORESET 0x0400 /* don't reset the mouse */
#define PSM_CONFIG_FORCETAP 0x0800 /* assume `tap' action exists */
#define PSM_CONFIG_IGNPORTERROR 0x1000 /* ignore error in aux port test */
#define PSM_CONFIG_FLAGS (PSM_CONFIG_RESOLUTION \
| PSM_CONFIG_ACCEL \
| PSM_CONFIG_NOCHECKSYNC \
| PSM_CONFIG_NOIDPROBE \
| PSM_CONFIG_NORESET \
| PSM_CONFIG_FORCETAP \
| PSM_CONFIG_IGNPORTERROR)
/* other flags (flags) */
/* for backward compatibility */
#define OLD_MOUSE_GETHWINFO _IOR('M', 1, old_mousehw_t)
#define OLD_MOUSE_GETMODE _IOR('M', 2, old_mousemode_t)
#define OLD_MOUSE_SETMODE _IOW('M', 3, old_mousemode_t)
typedef struct old_mousehw {
int buttons;
int iftype;
int type;
int hwid;
} old_mousehw_t;
typedef struct old_mousemode {
int protocol;
int rate;
int resolution;
int accelfactor;
} old_mousemode_t;
/* packet formatting function */
typedef int packetfunc_t __P((struct psm_softc *, unsigned char *,
int *, int, mousestatus_t *));
/* function prototypes */
static int psmprobe __P((device_t));
static int psmattach __P((device_t));
#ifdef PSM_HOOKAPM
static int psmresume __P((void *));
#endif
static d_open_t psmopen;
static d_close_t psmclose;
static d_read_t psmread;
static d_ioctl_t psmioctl;
static d_poll_t psmpoll;
static int enable_aux_dev __P((KBDC));
static int disable_aux_dev __P((KBDC));
static int get_mouse_status __P((KBDC, int *, int, int));
static int get_aux_id __P((KBDC));
static int set_mouse_sampling_rate __P((KBDC, int));
static int set_mouse_scaling __P((KBDC, int));
static int set_mouse_resolution __P((KBDC, int));
#ifdef PSM_RESETAFTERSUSPEND
static int set_mouse_mode __P((KBDC));
#endif /* PSM_RESETAFTERSUSPEND */
static int get_mouse_buttons __P((KBDC));
static int is_a_mouse __P((int));
static void recover_from_error __P((KBDC));
static int restore_controller __P((KBDC, int));
#ifdef PSM_RESETAFTERSUSPEND
static int reinitialize __P((int, mousemode_t *));
#endif
static int doopen __P((int, int));
static char *model_name(int);
static void psmintr(void*);
/* vendor specific features */
typedef int probefunc_t __P((struct psm_softc *));
static int mouse_id_proc1 __P((KBDC, int, int, int *));
static probefunc_t enable_groller;
static probefunc_t enable_gmouse;
static probefunc_t enable_aglide;
static probefunc_t enable_kmouse;
static probefunc_t enable_msintelli;
static probefunc_t enable_mmanplus;
static int tame_mouse __P((struct psm_softc *, mousestatus_t *, unsigned char *));
static struct {
int model;
unsigned char syncmask;
int packetsize;
probefunc_t *probefunc;
} vendortype[] = {
{ MOUSE_MODEL_NET, /* Genius NetMouse */
0xc8, MOUSE_INTELLI_PACKETSIZE, enable_gmouse, },
{ MOUSE_MODEL_NETSCROLL, /* Genius NetScroll */
0xc8, 6, enable_groller, },
{ MOUSE_MODEL_GLIDEPOINT, /* ALPS GlidePoint */
0xc0, MOUSE_PS2_PACKETSIZE, enable_aglide, },
{ MOUSE_MODEL_MOUSEMANPLUS, /* Logitech MouseMan+ */
0x08, MOUSE_PS2_PACKETSIZE, enable_mmanplus, },
{ MOUSE_MODEL_THINK, /* Kensignton ThinkingMouse */
0x80, MOUSE_PS2_PACKETSIZE, enable_kmouse, },
{ MOUSE_MODEL_INTELLI, /* Microsoft IntelliMouse */
0xc8, MOUSE_INTELLI_PACKETSIZE, enable_msintelli, },
{ MOUSE_MODEL_GENERIC,
0xc0, MOUSE_PS2_PACKETSIZE, NULL, },
};
#define GENERIC_MOUSE_ENTRY 6
/* device driver declarateion */
static device_method_t psm_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, psmprobe),
DEVMETHOD(device_attach, psmattach),
{ 0, 0 }
};
static driver_t psm_driver = {
"psm",
psm_methods,
sizeof(struct psm_softc),
};
#define CDEV_MAJOR 21
static struct cdevsw psm_cdevsw = {
/* open */ psmopen,
/* close */ psmclose,
/* read */ psmread,
/* write */ nowrite,
/* ioctl */ psmioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ nodevtotty,
/* poll */ psmpoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "psm",
/* parms */ noparms,
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* maxio */ 0,
/* bmaj */ -1
};
/* debug message level */
static int verbose = PSM_DEBUG;
/* device I/O routines */
static int
enable_aux_dev(KBDC kbdc)
{
int res;
res = send_aux_command(kbdc, PSMC_ENABLE_DEV);
if (verbose >= 2)
log(LOG_DEBUG, "psm: ENABLE_DEV return code:%04x\n", res);
return (res == PSM_ACK);
}
static int
disable_aux_dev(KBDC kbdc)
{
int res;
res = send_aux_command(kbdc, PSMC_DISABLE_DEV);
if (verbose >= 2)
log(LOG_DEBUG, "psm: DISABLE_DEV return code:%04x\n", res);
return (res == PSM_ACK);
}
static int
get_mouse_status(KBDC kbdc, int *status, int flag, int len)
{
int cmd;
int res;
int i;
switch (flag) {
case 0:
default:
cmd = PSMC_SEND_DEV_STATUS;
break;
case 1:
cmd = PSMC_SEND_DEV_DATA;
break;
}
empty_aux_buffer(kbdc, 5);
res = send_aux_command(kbdc, cmd);
if (verbose >= 2)
log(LOG_DEBUG, "psm: SEND_AUX_DEV_%s return code:%04x\n",
(flag == 1) ? "DATA" : "STATUS", res);
if (res != PSM_ACK)
return 0;
for (i = 0; i < len; ++i) {
status[i] = read_aux_data(kbdc);
if (status[i] < 0)
break;
}
if (verbose) {
log(LOG_DEBUG, "psm: %s %02x %02x %02x\n",
(flag == 1) ? "data" : "status", status[0], status[1], status[2]);
}
return i;
}
static int
get_aux_id(KBDC kbdc)
{
int res;
int id;
empty_aux_buffer(kbdc, 5);
res = send_aux_command(kbdc, PSMC_SEND_DEV_ID);
if (verbose >= 2)
log(LOG_DEBUG, "psm: SEND_DEV_ID return code:%04x\n", res);
if (res != PSM_ACK)
return (-1);
/* 10ms delay */
DELAY(10000);
id = read_aux_data(kbdc);
if (verbose >= 2)
log(LOG_DEBUG, "psm: device ID: %04x\n", id);
return id;
}
static int
set_mouse_sampling_rate(KBDC kbdc, int rate)
{
int res;
res = send_aux_command_and_data(kbdc, PSMC_SET_SAMPLING_RATE, rate);
if (verbose >= 2)
log(LOG_DEBUG, "psm: SET_SAMPLING_RATE (%d) %04x\n", rate, res);
return ((res == PSM_ACK) ? rate : -1);
}
static int
set_mouse_scaling(KBDC kbdc, int scale)
{
int res;
switch (scale) {
case 1:
default:
scale = PSMC_SET_SCALING11;
break;
case 2:
scale = PSMC_SET_SCALING21;
break;
}
res = send_aux_command(kbdc, scale);
if (verbose >= 2)
log(LOG_DEBUG, "psm: SET_SCALING%s return code:%04x\n",
(scale == PSMC_SET_SCALING21) ? "21" : "11", res);
return (res == PSM_ACK);
}
/* `val' must be 0 through PSMD_MAX_RESOLUTION */
static int
set_mouse_resolution(KBDC kbdc, int val)
{
int res;
res = send_aux_command_and_data(kbdc, PSMC_SET_RESOLUTION, val);
if (verbose >= 2)
log(LOG_DEBUG, "psm: SET_RESOLUTION (%d) %04x\n", val, res);
return ((res == PSM_ACK) ? val : -1);
}
#ifdef PSM_RESETAFTERSUSPEND
/*
* NOTE: once `set_mouse_mode()' is called, the mouse device must be
* re-enabled by calling `enable_aux_dev()'
*/
static int
set_mouse_mode(KBDC kbdc)
{
int res;
res = send_aux_command(kbdc, PSMC_SET_STREAM_MODE);
if (verbose >= 2)
log(LOG_DEBUG, "psm: SET_STREAM_MODE return code:%04x\n", res);
return (res == PSM_ACK);
}
#endif /* PSM_RESETAFTERSUSPEND */
static int
get_mouse_buttons(KBDC kbdc)
{
int c = 2; /* assume two buttons by default */
int status[3];
/*
* NOTE: a special sequence to obtain Logitech Mouse specific
* information: set resolution to 25 ppi, set scaling to 1:1, set
* scaling to 1:1, set scaling to 1:1. Then the second byte of the
* mouse status bytes is the number of available buttons.
* Some manufactures also support this sequence.
*/
if (set_mouse_resolution(kbdc, PSMD_RES_LOW) != PSMD_RES_LOW)
return c;
if (set_mouse_scaling(kbdc, 1) && set_mouse_scaling(kbdc, 1)
&& set_mouse_scaling(kbdc, 1)
&& (get_mouse_status(kbdc, status, 0, 3) >= 3)) {
if (status[1] != 0)
return status[1];
}
return c;
}
/* misc subroutines */
/*
* Someday, I will get the complete list of valid pointing devices and
* their IDs... XXX
*/
static int
is_a_mouse(int id)
{
#if 0
static int valid_ids[] = {
PSM_MOUSE_ID, /* mouse */
PSM_BALLPOINT_ID, /* ballpoint device */
PSM_INTELLI_ID, /* Intellimouse */
-1 /* end of table */
};
int i;
for (i = 0; valid_ids[i] >= 0; ++i)
if (valid_ids[i] == id)
return TRUE;
return FALSE;
#else
return TRUE;
#endif
}
static char *
model_name(int model)
{
static struct {
int model_code;
char *model_name;
} models[] = {
{ MOUSE_MODEL_NETSCROLL, "NetScroll Mouse" },
{ MOUSE_MODEL_NET, "NetMouse" },
{ MOUSE_MODEL_GLIDEPOINT, "GlidePoint" },
{ MOUSE_MODEL_THINK, "ThinkingMouse" },
{ MOUSE_MODEL_INTELLI, "IntelliMouse" },
{ MOUSE_MODEL_MOUSEMANPLUS, "MouseMan+" },
{ MOUSE_MODEL_GENERIC, "Generic PS/2 mouse" },
{ MOUSE_MODEL_UNKNOWN, NULL },
};
int i;
for (i = 0; models[i].model_code != MOUSE_MODEL_UNKNOWN; ++i) {
if (models[i].model_code == model)
return models[i].model_name;
}
return "Unknown";
}
static void
recover_from_error(KBDC kbdc)
{
/* discard anything left in the output buffer */
empty_both_buffers(kbdc, 10);
#if 0
/*
* NOTE: KBDC_RESET_KBD may not restore the communication between the
* keyboard and the controller.
*/
reset_kbd(kbdc);
#else
/*
* NOTE: somehow diagnostic and keyboard port test commands bring the
* keyboard back.
*/
if (!test_controller(kbdc))
log(LOG_ERR, "psm: keyboard controller failed.\n");
/* if there isn't a keyboard in the system, the following error is OK */
if (test_kbd_port(kbdc) != 0) {
if (verbose)
log(LOG_ERR, "psm: keyboard port failed.\n");
}
#endif
}
static int
restore_controller(KBDC kbdc, int command_byte)
{
empty_both_buffers(kbdc, 10);
if (!set_controller_command_byte(kbdc, 0xff, command_byte)) {
log(LOG_ERR, "psm: failed to restore the keyboard controller "
"command byte.\n");
return FALSE;
} else {
return TRUE;
}
}
#ifdef PSM_RESETAFTERSUSPEND
/*
* Re-initialize the aux port and device. The aux port must be enabled
* and its interrupt must be disabled before calling this routine.
* The aux device will be disabled before returning.
* The keyboard controller must be locked via `kbdc_lock()' before
* calling this routine.
*/
static int
reinitialize(int unit, mousemode_t *mode)
{
struct psm_softc *sc = PSM_SOFTC(unit);
KBDC kbdc = sc->kbdc;
int stat[3];
int i;
switch((i = test_aux_port(kbdc))) {
case 1: /* ignore this error */
case PSM_ACK:
if (verbose)
log(LOG_DEBUG, "psm%d: strange result for test aux port (%d).\n",
unit, i);
/* fall though */
case 0: /* no error */
break;
case -1: /* time out */
default: /* error */
recover_from_error(kbdc);
if (sc->config & PSM_CONFIG_IGNPORTERROR)
break;
log(LOG_ERR, "psm%d: the aux port is not functioning (%d).\n",
unit, i);
return FALSE;
}
if (sc->config & PSM_CONFIG_NORESET) {
/*
* Don't try to reset the pointing device. It may possibly be
* left in the unknown state, though...
*/
} else {
/*
* NOTE: some controllers appears to hang the `keyboard' when
* the aux port doesn't exist and `PSMC_RESET_DEV' is issued.
*/
if (!reset_aux_dev(kbdc)) {
recover_from_error(kbdc);
log(LOG_ERR, "psm%d: failed to reset the aux device.\n", unit);
return FALSE;
}
}
/*
* both the aux port and the aux device is functioning, see
* if the device can be enabled.
*/
if (!enable_aux_dev(kbdc) || !disable_aux_dev(kbdc)) {
log(LOG_ERR, "psm%d: failed to enable the aux device.\n", unit);
return FALSE;
}
empty_both_buffers(kbdc, 10); /* remove stray data if any */
if (sc->config & PSM_CONFIG_NOIDPROBE) {
i = GENERIC_MOUSE_ENTRY;
} else {
/* FIXME: hardware ID, mouse buttons? */
/* other parameters */
for (i = 0; vendortype[i].probefunc != NULL; ++i) {
if ((*vendortype[i].probefunc)(sc)) {
if (verbose >= 2)
log(LOG_ERR, "psm%d: found %s\n",
unit, model_name(vendortype[i].model));
break;
}
}
}
sc->hw.model = vendortype[i].model;
sc->mode.packetsize = vendortype[i].packetsize;
/* set mouse parameters */
if (mode != (mousemode_t *)NULL) {
if (mode->rate > 0)
mode->rate = set_mouse_sampling_rate(kbdc, mode->rate);
if (mode->resolution >= 0)
mode->resolution = set_mouse_resolution(kbdc, mode->resolution);
set_mouse_scaling(kbdc, 1);
set_mouse_mode(kbdc);
}
/* request a data packet and extract sync. bits */
if (get_mouse_status(kbdc, stat, 1, 3) < 3) {
log(LOG_DEBUG, "psm%d: failed to get data (reinitialize).\n", unit);
sc->mode.syncmask[0] = 0;
} else {
sc->mode.syncmask[1] = stat[0] & sc->mode.syncmask[0]; /* syncbits */
/* the NetScroll Mouse will send three more bytes... Ignore them */
empty_aux_buffer(kbdc, 5);
}
/* just check the status of the mouse */
if (get_mouse_status(kbdc, stat, 0, 3) < 3)
log(LOG_DEBUG, "psm%d: failed to get status (reinitialize).\n", unit);
return TRUE;
}
#endif /* PSM_RESETAFTERSUSPEND */
static int
doopen(int unit, int command_byte)
{
struct psm_softc *sc = PSM_SOFTC(unit);
int stat[3];
/* enable the mouse device */
if (!enable_aux_dev(sc->kbdc)) {
/* MOUSE ERROR: failed to enable the mouse because:
* 1) the mouse is faulty,
* 2) the mouse has been removed(!?)
* In the latter case, the keyboard may have hung, and need
* recovery procedure...
*/
recover_from_error(sc->kbdc);
#if 0
/* FIXME: we could reset the mouse here and try to enable
* it again. But it will take long time and it's not a good
* idea to disable the keyboard that long...
*/
if (!reinitialize(unit, &sc->mode) || !enable_aux_dev(sc->kbdc)) {
recover_from_error(sc->kbdc);
#else
{
#endif
restore_controller(sc->kbdc, command_byte);
/* mark this device is no longer available */
sc->state &= ~PSM_VALID;
log(LOG_ERR, "psm%d: failed to enable the device (doopen).\n",
unit);
return (EIO);
}
}
if (get_mouse_status(sc->kbdc, stat, 0, 3) < 3)
log(LOG_DEBUG, "psm%d: failed to get status (doopen).\n", unit);
/* enable the aux port and interrupt */
if (!set_controller_command_byte(sc->kbdc,
kbdc_get_device_mask(sc->kbdc),
(command_byte & KBD_KBD_CONTROL_BITS)
| KBD_ENABLE_AUX_PORT | KBD_ENABLE_AUX_INT)) {
/* CONTROLLER ERROR */
disable_aux_dev(sc->kbdc);
restore_controller(sc->kbdc, command_byte);
log(LOG_ERR, "psm%d: failed to enable the aux interrupt (doopen).\n",
unit);
return (EIO);
}
return (0);
}
/* psm driver entry points */
#define endprobe(v) { if (bootverbose) \
--verbose; \
kbdc_set_device_mask(sc->kbdc, mask); \
kbdc_lock(sc->kbdc, FALSE); \
free(sc, M_DEVBUF); \
return (v); \
}
static int
psmprobe(device_t dev)
{
int unit = device_get_unit(dev);
struct psm_softc *sc = device_get_softc(dev);
uintptr_t port;
uintptr_t flags;
int stat[3];
int command_byte;
int mask;
int i;
#if 0
kbdc_debug(TRUE);
#endif
BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_PORT, &port);
BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_FLAGS, &flags);
sc->addr = port;
sc->kbdc = kbdc_open(sc->addr);
sc->config = flags & PSM_CONFIG_FLAGS;
sc->flags = 0;
if (bootverbose)
++verbose;
device_set_desc(dev, "PS/2 Mouse");
if (!kbdc_lock(sc->kbdc, TRUE)) {
printf("psm%d: unable to lock the controller.\n", unit);
if (bootverbose)
--verbose;
return (ENXIO);
}
/*
* NOTE: two bits in the command byte controls the operation of the
* aux port (mouse port): the aux port disable bit (bit 5) and the aux
* port interrupt (IRQ 12) enable bit (bit 2).
*/
/* discard anything left after the keyboard initialization */
empty_both_buffers(sc->kbdc, 10);
/* save the current command byte; it will be used later */
mask = kbdc_get_device_mask(sc->kbdc) & ~KBD_AUX_CONTROL_BITS;
command_byte = get_controller_command_byte(sc->kbdc);
if (verbose)
printf("psm%d: current command byte:%04x\n", unit, command_byte);
if (command_byte == -1) {
/* CONTROLLER ERROR */
printf("psm%d: unable to get the current command byte value.\n",
unit);
endprobe(ENXIO);
}
/*
* disable the keyboard port while probing the aux port, which must be
* enabled during this routine
*/
if (!set_controller_command_byte(sc->kbdc,
KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS,
KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
| KBD_ENABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/*
* this is CONTROLLER ERROR; I don't know how to recover
* from this error...
*/
restore_controller(sc->kbdc, command_byte);
printf("psm%d: unable to set the command byte.\n", unit);
endprobe(ENXIO);
}
write_controller_command(sc->kbdc, KBDC_ENABLE_AUX_PORT);
/*
* NOTE: `test_aux_port()' is designed to return with zero if the aux
* port exists and is functioning. However, some controllers appears
* to respond with zero even when the aux port doesn't exist. (It may
* be that this is only the case when the controller DOES have the aux
* port but the port is not wired on the motherboard.) The keyboard
* controllers without the port, such as the original AT, are
* supporsed to return with an error code or simply time out. In any
* case, we have to continue probing the port even when the controller
* passes this test.
*
* XXX: some controllers erroneously return the error code 1 when
* it has the perfectly functional aux port. We have to ignore this
* error code. Even if the controller HAS error with the aux port,
* it will be detected later...
* XXX: another incompatible controller returns PSM_ACK (0xfa)...
*/
switch ((i = test_aux_port(sc->kbdc))) {
case 1: /* ignore this error */
case PSM_ACK:
if (verbose)
printf("psm%d: strange result for test aux port (%d).\n",
unit, i);
/* fall though */
case 0: /* no error */
break;
case -1: /* time out */
default: /* error */
recover_from_error(sc->kbdc);
if (sc->config & PSM_CONFIG_IGNPORTERROR)
break;
restore_controller(sc->kbdc, command_byte);
if (verbose)
printf("psm%d: the aux port is not functioning (%d).\n",
unit, i);
endprobe(ENXIO);
}
if (sc->config & PSM_CONFIG_NORESET) {
/*
* Don't try to reset the pointing device. It may possibly be
* left in the unknown state, though...
*/
} else {
/*
* NOTE: some controllers appears to hang the `keyboard' when the aux
* port doesn't exist and `PSMC_RESET_DEV' is issued.
*/
if (!reset_aux_dev(sc->kbdc)) {
recover_from_error(sc->kbdc);
restore_controller(sc->kbdc, command_byte);
if (verbose)
printf("psm%d: failed to reset the aux device.\n", unit);
endprobe(ENXIO);
}
}
/*
* both the aux port and the aux device is functioning, see if the
* device can be enabled. NOTE: when enabled, the device will start
* sending data; we shall immediately disable the device once we know
* the device can be enabled.
*/
if (!enable_aux_dev(sc->kbdc) || !disable_aux_dev(sc->kbdc)) {
/* MOUSE ERROR */
recover_from_error(sc->kbdc);
restore_controller(sc->kbdc, command_byte);
if (verbose)
printf("psm%d: failed to enable the aux device.\n", unit);
endprobe(ENXIO);
}
/* save the default values after reset */
if (get_mouse_status(sc->kbdc, stat, 0, 3) >= 3) {
sc->dflt_mode.rate = sc->mode.rate = stat[2];
sc->dflt_mode.resolution = sc->mode.resolution = stat[1];
} else {
sc->dflt_mode.rate = sc->mode.rate = -1;
sc->dflt_mode.resolution = sc->mode.resolution = -1;
}
/* hardware information */
sc->hw.iftype = MOUSE_IF_PS2;
/* verify the device is a mouse */
sc->hw.hwid = get_aux_id(sc->kbdc);
if (!is_a_mouse(sc->hw.hwid)) {
restore_controller(sc->kbdc, command_byte);
if (verbose)
printf("psm%d: unknown device type (%d).\n", unit, sc->hw.hwid);
endprobe(ENXIO);
}
switch (sc->hw.hwid) {
case PSM_BALLPOINT_ID:
sc->hw.type = MOUSE_TRACKBALL;
break;
case PSM_MOUSE_ID:
case PSM_INTELLI_ID:
sc->hw.type = MOUSE_MOUSE;
break;
default:
sc->hw.type = MOUSE_UNKNOWN;
break;
}
if (sc->config & PSM_CONFIG_NOIDPROBE) {
sc->hw.buttons = 2;
i = GENERIC_MOUSE_ENTRY;
} else {
/* # of buttons */
sc->hw.buttons = get_mouse_buttons(sc->kbdc);
/* other parameters */
for (i = 0; vendortype[i].probefunc != NULL; ++i) {
if ((*vendortype[i].probefunc)(sc)) {
if (verbose >= 2)
printf("psm%d: found %s\n",
unit, model_name(vendortype[i].model));
break;
}
}
}
sc->hw.model = vendortype[i].model;
sc->dflt_mode.level = PSM_LEVEL_BASE;
sc->dflt_mode.packetsize = MOUSE_PS2_PACKETSIZE;
sc->dflt_mode.accelfactor = (sc->config & PSM_CONFIG_ACCEL) >> 4;
if (sc->config & PSM_CONFIG_NOCHECKSYNC)
sc->dflt_mode.syncmask[0] = 0;
else
sc->dflt_mode.syncmask[0] = vendortype[i].syncmask;
if (sc->config & PSM_CONFIG_FORCETAP)
sc->mode.syncmask[0] &= ~MOUSE_PS2_TAP;
sc->dflt_mode.syncmask[1] = 0; /* syncbits */
sc->mode = sc->dflt_mode;
sc->mode.packetsize = vendortype[i].packetsize;
/* set mouse parameters */
i = send_aux_command(sc->kbdc, PSMC_SET_DEFAULTS);
if (verbose >= 2)
printf("psm%d: SET_DEFAULTS return code:%04x\n", unit, i);
if (sc->config & PSM_CONFIG_RESOLUTION) {
sc->mode.resolution
= set_mouse_resolution(sc->kbdc,
(sc->config & PSM_CONFIG_RESOLUTION) - 1);
}
/* request a data packet and extract sync. bits */
if (get_mouse_status(sc->kbdc, stat, 1, 3) < 3) {
printf("psm%d: failed to get data.\n", unit);
sc->mode.syncmask[0] = 0;
} else {
sc->mode.syncmask[1] = stat[0] & sc->mode.syncmask[0]; /* syncbits */
/* the NetScroll Mouse will send three more bytes... Ignore them */
empty_aux_buffer(sc->kbdc, 5);
}
/* just check the status of the mouse */
/*
* NOTE: XXX there are some arcane controller/mouse combinations out
* there, which hung the controller unless there is data transmission
* after ACK from the mouse.
*/
if (get_mouse_status(sc->kbdc, stat, 0, 3) < 3) {
printf("psm%d: failed to get status.\n", unit);
} else {
/*
* When in its native mode, some mice operate with different
* default parameters than in the PS/2 compatible mode.
*/
sc->dflt_mode.rate = sc->mode.rate = stat[2];
sc->dflt_mode.resolution = sc->mode.resolution = stat[1];
}
/* disable the aux port for now... */
if (!set_controller_command_byte(sc->kbdc,
KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS,
(command_byte & KBD_KBD_CONTROL_BITS)
| KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/*
* this is CONTROLLER ERROR; I don't know the proper way to
* recover from this error...
*/
restore_controller(sc->kbdc, command_byte);
printf("psm%d: unable to set the command byte.\n", unit);
endprobe(ENXIO);
}
/* done */
kbdc_set_device_mask(sc->kbdc, mask | KBD_AUX_CONTROL_BITS);
kbdc_lock(sc->kbdc, FALSE);
return (0);
}
static int
psmattach(device_t dev)
{
int unit = device_get_unit(dev);
struct psm_softc *sc = device_get_softc(dev);
void *ih;
struct resource *res;
uintptr_t irq;
int zero = 0;
if (sc == NULL) /* shouldn't happen */
return (ENXIO);
/* Setup initial state */
sc->state = PSM_VALID;
/* Done */
#ifdef DEVFS
sc->devfs_token =
devfs_add_devswf(&psm_cdevsw, PSM_MKMINOR(unit, FALSE),
DV_CHR, 0, 0, 0666, "psm%d", unit);
sc->b_devfs_token =
devfs_add_devswf(&psm_cdevsw, PSM_MKMINOR(unit, TRUE),
DV_CHR, 0, 0, 0666, "bpsm%d", unit);
#endif /* DEVFS */
#ifdef PSM_HOOKAPM
sc->resumehook.ah_name = "PS/2 mouse";
sc->resumehook.ah_fun = psmresume;
sc->resumehook.ah_arg = (void *)unit;
sc->resumehook.ah_order = APM_MID_ORDER;
apm_hook_establish(APM_HOOK_RESUME , &sc->resumehook);
if (verbose)
printf("psm%d: APM hooks installed.\n", unit);
#endif /* PSM_HOOKAPM */
if (!verbose) {
printf("psm%d: model %s, device ID %d\n",
unit, model_name(sc->hw.model), sc->hw.hwid);
} else {
printf("psm%d: model %s, device ID %d, %d buttons\n",
unit, model_name(sc->hw.model), sc->hw.hwid, sc->hw.buttons);
printf("psm%d: config:%08x, flags:%08x, packet size:%d\n",
unit, sc->config, sc->flags, sc->mode.packetsize);
printf("psm%d: syncmask:%02x, syncbits:%02x\n",
unit, sc->mode.syncmask[0], sc->mode.syncmask[1]);
}
if (bootverbose)
--verbose;
BUS_READ_IVAR(device_get_parent(dev), dev, KBDC_IVAR_IRQ, &irq);
res = bus_alloc_resource(dev, SYS_RES_IRQ, &zero, irq, irq, 1,
RF_SHAREABLE | RF_ACTIVE);
BUS_SETUP_INTR(device_get_parent(dev), dev, res, INTR_TYPE_TTY,
psmintr, sc, &ih);
return (0);
}
static int
psmopen(dev_t dev, int flag, int fmt, struct proc *p)
{
int unit = PSM_UNIT(dev);
struct psm_softc *sc;
int command_byte;
int err;
int s;
/* Validate unit number */
if (unit >= NPSM)
return (ENXIO);
/* Get device data */
sc = PSM_SOFTC(unit);
if ((sc == NULL) || (sc->state & PSM_VALID) == 0)
/* the device is no longer valid/functioning */
return (ENXIO);
/* Disallow multiple opens */
if (sc->state & PSM_OPEN)
return (EBUSY);
device_busy(devclass_get_device(psm_devclass, unit));
/* Initialize state */
sc->rsel.si_flags = 0;
sc->rsel.si_pid = 0;
sc->mode.level = sc->dflt_mode.level;
sc->mode.protocol = sc->dflt_mode.protocol;
/* flush the event queue */
sc->queue.count = 0;
sc->queue.head = 0;
sc->queue.tail = 0;
sc->status.flags = 0;
sc->status.button = 0;
sc->status.obutton = 0;
sc->status.dx = 0;
sc->status.dy = 0;
sc->status.dz = 0;
sc->button = 0;
/* empty input buffer */
bzero(sc->ipacket, sizeof(sc->ipacket));
sc->inputbytes = 0;
/* don't let timeout routines in the keyboard driver to poll the kbdc */
if (!kbdc_lock(sc->kbdc, TRUE))
return (EIO);
/* save the current controller command byte */
s = spltty();
command_byte = get_controller_command_byte(sc->kbdc);
/* enable the aux port and temporalily disable the keyboard */
if ((command_byte == -1)
|| !set_controller_command_byte(sc->kbdc,
kbdc_get_device_mask(sc->kbdc),
KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
| KBD_ENABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/* CONTROLLER ERROR; do you know how to get out of this? */
kbdc_lock(sc->kbdc, FALSE);
splx(s);
log(LOG_ERR, "psm%d: unable to set the command byte (psmopen).\n",
unit);
return (EIO);
}
/*
* Now that the keyboard controller is told not to generate
* the keyboard and mouse interrupts, call `splx()' to allow
* the other tty interrupts. The clock interrupt may also occur,
* but timeout routines will be blocked by the poll flag set
* via `kbdc_lock()'
*/
splx(s);
/* enable the mouse device */
err = doopen(unit, command_byte);
/* done */
if (err == 0)
sc->state |= PSM_OPEN;
kbdc_lock(sc->kbdc, FALSE);
return (err);
}
static int
psmclose(dev_t dev, int flag, int fmt, struct proc *p)
{
int unit = PSM_UNIT(dev);
struct psm_softc *sc = PSM_SOFTC(unit);
int stat[3];
int command_byte;
int s;
/* don't let timeout routines in the keyboard driver to poll the kbdc */
if (!kbdc_lock(sc->kbdc, TRUE))
return (EIO);
/* save the current controller command byte */
s = spltty();
command_byte = get_controller_command_byte(sc->kbdc);
if (command_byte == -1) {
kbdc_lock(sc->kbdc, FALSE);
splx(s);
return (EIO);
}
/* disable the aux interrupt and temporalily disable the keyboard */
if (!set_controller_command_byte(sc->kbdc,
kbdc_get_device_mask(sc->kbdc),
KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
| KBD_ENABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
log(LOG_ERR, "psm%d: failed to disable the aux int (psmclose).\n",
PSM_UNIT(dev));
/* CONTROLLER ERROR;
* NOTE: we shall force our way through. Because the only
* ill effect we shall see is that we may not be able
* to read ACK from the mouse, and it doesn't matter much
* so long as the mouse will accept the DISABLE command.
*/
}
splx(s);
/* remove anything left in the output buffer */
empty_aux_buffer(sc->kbdc, 10);
/* disable the aux device, port and interrupt */
if (sc->state & PSM_VALID) {
if (!disable_aux_dev(sc->kbdc)) {
/* MOUSE ERROR;
* NOTE: we don't return error and continue, pretending
* we have successfully disabled the device. It's OK because
* the interrupt routine will discard any data from the mouse
* hereafter.
*/
log(LOG_ERR, "psm%d: failed to disable the device (psmclose).\n",
PSM_UNIT(dev));
}
if (get_mouse_status(sc->kbdc, stat, 0, 3) < 3)
log(LOG_DEBUG, "psm%d: failed to get status (psmclose).\n",
PSM_UNIT(dev));
}
if (!set_controller_command_byte(sc->kbdc,
kbdc_get_device_mask(sc->kbdc),
(command_byte & KBD_KBD_CONTROL_BITS)
| KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/* CONTROLLER ERROR;
* we shall ignore this error; see the above comment.
*/
log(LOG_ERR, "psm%d: failed to disable the aux port (psmclose).\n",
PSM_UNIT(dev));
}
/* remove anything left in the output buffer */
empty_aux_buffer(sc->kbdc, 10);
/* close is almost always successful */
sc->state &= ~PSM_OPEN;
kbdc_lock(sc->kbdc, FALSE);
device_unbusy(devclass_get_device(psm_devclass, unit));
return (0);
}
static int
tame_mouse(struct psm_softc *sc, mousestatus_t *status, unsigned char *buf)
{
static unsigned char butmapps2[8] = {
0,
MOUSE_PS2_BUTTON1DOWN,
MOUSE_PS2_BUTTON2DOWN,
MOUSE_PS2_BUTTON1DOWN | MOUSE_PS2_BUTTON2DOWN,
MOUSE_PS2_BUTTON3DOWN,
MOUSE_PS2_BUTTON1DOWN | MOUSE_PS2_BUTTON3DOWN,
MOUSE_PS2_BUTTON2DOWN | MOUSE_PS2_BUTTON3DOWN,
MOUSE_PS2_BUTTON1DOWN | MOUSE_PS2_BUTTON2DOWN | MOUSE_PS2_BUTTON3DOWN,
};
static unsigned char butmapmsc[8] = {
MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
MOUSE_MSC_BUTTON2UP | MOUSE_MSC_BUTTON3UP,
MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON3UP,
MOUSE_MSC_BUTTON3UP,
MOUSE_MSC_BUTTON1UP | MOUSE_MSC_BUTTON2UP,
MOUSE_MSC_BUTTON2UP,
MOUSE_MSC_BUTTON1UP,
0,
};
int mapped;
int i;
if (sc->mode.level == PSM_LEVEL_BASE) {
mapped = status->button & ~MOUSE_BUTTON4DOWN;
if (status->button & MOUSE_BUTTON4DOWN)
mapped |= MOUSE_BUTTON1DOWN;
status->button = mapped;
buf[0] = MOUSE_PS2_SYNC | butmapps2[mapped & MOUSE_STDBUTTONS];
i = max(min(status->dx, 255), -256);
if (i < 0)
buf[0] |= MOUSE_PS2_XNEG;
buf[1] = i;
i = max(min(status->dy, 255), -256);
if (i < 0)
buf[0] |= MOUSE_PS2_YNEG;
buf[2] = i;
return MOUSE_PS2_PACKETSIZE;
} else if (sc->mode.level == PSM_LEVEL_STANDARD) {
buf[0] = MOUSE_MSC_SYNC | butmapmsc[status->button & MOUSE_STDBUTTONS];
i = max(min(status->dx, 255), -256);
buf[1] = i >> 1;
buf[3] = i - buf[1];
i = max(min(status->dy, 255), -256);
buf[2] = i >> 1;
buf[4] = i - buf[2];
i = max(min(status->dz, 127), -128);
buf[5] = (i >> 1) & 0x7f;
buf[6] = (i - (i >> 1)) & 0x7f;
buf[7] = (~status->button >> 3) & 0x7f;
return MOUSE_SYS_PACKETSIZE;
}
return sc->inputbytes;;
}
static int
psmread(dev_t dev, struct uio *uio, int flag)
{
register struct psm_softc *sc = PSM_SOFTC(PSM_UNIT(dev));
unsigned char buf[PSM_SMALLBUFSIZE];
int error = 0;
int s;
int l;
if ((sc->state & PSM_VALID) == 0)
return EIO;
/* block until mouse activity occured */
s = spltty();
while (sc->queue.count <= 0) {
if (PSM_NBLOCKIO(dev)) {
splx(s);
return EWOULDBLOCK;
}
sc->state |= PSM_ASLP;
error = tsleep((caddr_t) sc, PZERO | PCATCH, "psmrea", 0);
sc->state &= ~PSM_ASLP;
if (error) {
splx(s);
return error;
} else if ((sc->state & PSM_VALID) == 0) {
/* the device disappeared! */
splx(s);
return EIO;
}
}
splx(s);
/* copy data to the user land */
while ((sc->queue.count > 0) && (uio->uio_resid > 0)) {
s = spltty();
l = min(sc->queue.count, uio->uio_resid);
if (l > sizeof(buf))
l = sizeof(buf);
if (l > sizeof(sc->queue.buf) - sc->queue.head) {
bcopy(&sc->queue.buf[sc->queue.head], &buf[0],
sizeof(sc->queue.buf) - sc->queue.head);
bcopy(&sc->queue.buf[0],
&buf[sizeof(sc->queue.buf) - sc->queue.head],
l - (sizeof(sc->queue.buf) - sc->queue.head));
} else {
bcopy(&sc->queue.buf[sc->queue.head], &buf[0], l);
}
sc->queue.count -= l;
sc->queue.head = (sc->queue.head + l) % sizeof(sc->queue.buf);
splx(s);
error = uiomove(buf, l, uio);
if (error)
break;
}
return error;
}
static int
block_mouse_data(struct psm_softc *sc, int *c)
{
int s;
if (!kbdc_lock(sc->kbdc, TRUE))
return EIO;
s = spltty();
*c = get_controller_command_byte(sc->kbdc);
if ((*c == -1)
|| !set_controller_command_byte(sc->kbdc,
kbdc_get_device_mask(sc->kbdc),
KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
| KBD_ENABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/* this is CONTROLLER ERROR */
splx(s);
kbdc_lock(sc->kbdc, FALSE);
return EIO;
}
/*
* The device may be in the middle of status data transmission.
* The transmission will be interrupted, thus, incomplete status
* data must be discarded. Although the aux interrupt is disabled
* at the keyboard controller level, at most one aux interrupt
* may have already been pending and a data byte is in the
* output buffer; throw it away. Note that the second argument
* to `empty_aux_buffer()' is zero, so that the call will just
* flush the internal queue.
* `psmintr()' will be invoked after `splx()' if an interrupt is
* pending; it will see no data and returns immediately.
*/
empty_aux_buffer(sc->kbdc, 0); /* flush the queue */
read_aux_data_no_wait(sc->kbdc); /* throw away data if any */
sc->inputbytes = 0;
splx(s);
return 0;
}
static int
unblock_mouse_data(struct psm_softc *sc, int c)
{
int error = 0;
/*
* We may have seen a part of status data during `set_mouse_XXX()'.
* they have been queued; flush it.
*/
empty_aux_buffer(sc->kbdc, 0);
/* restore ports and interrupt */
if (!set_controller_command_byte(sc->kbdc,
kbdc_get_device_mask(sc->kbdc),
c & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS))) {
/* CONTROLLER ERROR; this is serious, we may have
* been left with the inaccessible keyboard and
* the disabled mouse interrupt.
*/
error = EIO;
}
kbdc_lock(sc->kbdc, FALSE);
return error;
}
static int
psmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
struct psm_softc *sc = PSM_SOFTC(PSM_UNIT(dev));
mousemode_t mode;
mousestatus_t status;
#if (defined(MOUSE_GETVARS))
mousevar_t *var;
#endif
mousedata_t *data;
int stat[3];
int command_byte;
int error = 0;
int s;
/* Perform IOCTL command */
switch (cmd) {
case OLD_MOUSE_GETHWINFO:
s = spltty();
((old_mousehw_t *)addr)->buttons = sc->hw.buttons;
((old_mousehw_t *)addr)->iftype = sc->hw.iftype;
((old_mousehw_t *)addr)->type = sc->hw.type;
((old_mousehw_t *)addr)->hwid = sc->hw.hwid;
splx(s);
break;
case MOUSE_GETHWINFO:
s = spltty();
*(mousehw_t *)addr = sc->hw;
if (sc->mode.level == PSM_LEVEL_BASE)
((mousehw_t *)addr)->model = MOUSE_MODEL_GENERIC;
splx(s);
break;
case OLD_MOUSE_GETMODE:
s = spltty();
switch (sc->mode.level) {
case PSM_LEVEL_BASE:
((old_mousemode_t *)addr)->protocol = MOUSE_PROTO_PS2;
break;
case PSM_LEVEL_STANDARD:
((old_mousemode_t *)addr)->protocol = MOUSE_PROTO_SYSMOUSE;
break;
case PSM_LEVEL_NATIVE:
((old_mousemode_t *)addr)->protocol = MOUSE_PROTO_PS2;
break;
}
((old_mousemode_t *)addr)->rate = sc->mode.rate;
((old_mousemode_t *)addr)->resolution = sc->mode.resolution;
((old_mousemode_t *)addr)->accelfactor = sc->mode.accelfactor;
splx(s);
break;
case MOUSE_GETMODE:
s = spltty();
*(mousemode_t *)addr = sc->mode;
((mousemode_t *)addr)->resolution =
MOUSE_RES_LOW - sc->mode.resolution;
switch (sc->mode.level) {
case PSM_LEVEL_BASE:
((mousemode_t *)addr)->protocol = MOUSE_PROTO_PS2;
((mousemode_t *)addr)->packetsize = MOUSE_PS2_PACKETSIZE;
break;
case PSM_LEVEL_STANDARD:
((mousemode_t *)addr)->protocol = MOUSE_PROTO_SYSMOUSE;
((mousemode_t *)addr)->packetsize = MOUSE_SYS_PACKETSIZE;
((mousemode_t *)addr)->syncmask[0] = MOUSE_SYS_SYNCMASK;
((mousemode_t *)addr)->syncmask[1] = MOUSE_SYS_SYNC;
break;
case PSM_LEVEL_NATIVE:
/* FIXME: this isn't quite correct... XXX */
((mousemode_t *)addr)->protocol = MOUSE_PROTO_PS2;
break;
}
splx(s);
break;
case OLD_MOUSE_SETMODE:
case MOUSE_SETMODE:
if (cmd == OLD_MOUSE_SETMODE) {
mode.rate = ((old_mousemode_t *)addr)->rate;
/*
* resolution old I/F new I/F
* default 0 0
* low 1 -2
* medium low 2 -3
* medium high 3 -4
* high 4 -5
*/
if (((old_mousemode_t *)addr)->resolution > 0)
mode.resolution = -((old_mousemode_t *)addr)->resolution - 1;
mode.accelfactor = ((old_mousemode_t *)addr)->accelfactor;
mode.level = -1;
} else {
mode = *(mousemode_t *)addr;
}
/* adjust and validate parameters. */
if (mode.rate > UCHAR_MAX)
return EINVAL;
if (mode.rate == 0)
mode.rate = sc->dflt_mode.rate;
else if (mode.rate == -1)
/* don't change the current setting */
;
else if (mode.rate < 0)
return EINVAL;
if (mode.resolution >= UCHAR_MAX)
return EINVAL;
if (mode.resolution >= 200)
mode.resolution = MOUSE_RES_HIGH;
else if (mode.resolution >= 100)
mode.resolution = MOUSE_RES_MEDIUMHIGH;
else if (mode.resolution >= 50)
mode.resolution = MOUSE_RES_MEDIUMLOW;
else if (mode.resolution > 0)
mode.resolution = MOUSE_RES_LOW;
if (mode.resolution == MOUSE_RES_DEFAULT)
mode.resolution = sc->dflt_mode.resolution;
else if (mode.resolution == -1)
/* don't change the current setting */
;
else if (mode.resolution < 0) /* MOUSE_RES_LOW/MEDIUM/HIGH */
mode.resolution = MOUSE_RES_LOW - mode.resolution;
if (mode.level == -1)
/* don't change the current setting */
mode.level = sc->mode.level;
else if ((mode.level < PSM_LEVEL_MIN) || (mode.level > PSM_LEVEL_MAX))
return EINVAL;
if (mode.accelfactor == -1)
/* don't change the current setting */
mode.accelfactor = sc->mode.accelfactor;
else if (mode.accelfactor < 0)
return EINVAL;
/* don't allow anybody to poll the keyboard controller */
error = block_mouse_data(sc, &command_byte);
if (error)
return error;
/* set mouse parameters */
if (mode.rate > 0)
mode.rate = set_mouse_sampling_rate(sc->kbdc, mode.rate);
if (mode.resolution >= 0)
mode.resolution = set_mouse_resolution(sc->kbdc, mode.resolution);
set_mouse_scaling(sc->kbdc, 1);
get_mouse_status(sc->kbdc, stat, 0, 3);
s = spltty();
sc->mode.rate = mode.rate;
sc->mode.resolution = mode.resolution;
sc->mode.accelfactor = mode.accelfactor;
sc->mode.level = mode.level;
splx(s);
unblock_mouse_data(sc, command_byte);
break;
case MOUSE_GETLEVEL:
*(int *)addr = sc->mode.level;
break;
case MOUSE_SETLEVEL:
if ((*(int *)addr < PSM_LEVEL_MIN) || (*(int *)addr > PSM_LEVEL_MAX))
return EINVAL;
sc->mode.level = *(int *)addr;
break;
case MOUSE_GETSTATUS:
s = spltty();
status = sc->status;
sc->status.flags = 0;
sc->status.obutton = sc->status.button;
sc->status.button = 0;
sc->status.dx = 0;
sc->status.dy = 0;
sc->status.dz = 0;
splx(s);
*(mousestatus_t *)addr = status;
break;
#if (defined(MOUSE_GETVARS))
case MOUSE_GETVARS:
var = (mousevar_t *)addr;
bzero(var, sizeof(*var));
s = spltty();
var->var[0] = MOUSE_VARS_PS2_SIG;
var->var[1] = sc->config;
var->var[2] = sc->flags;
splx(s);
break;
case MOUSE_SETVARS:
return ENODEV;
#endif /* MOUSE_GETVARS */
case MOUSE_READSTATE:
case MOUSE_READDATA:
data = (mousedata_t *)addr;
if (data->len > sizeof(data->buf)/sizeof(data->buf[0]))
return EINVAL;
error = block_mouse_data(sc, &command_byte);
if (error)
return error;
if ((data->len = get_mouse_status(sc->kbdc, data->buf,
(cmd == MOUSE_READDATA) ? 1 : 0, data->len)) <= 0)
error = EIO;
unblock_mouse_data(sc, command_byte);
break;
#if (defined(MOUSE_SETRESOLUTION))
case MOUSE_SETRESOLUTION:
mode.resolution = *(int *)addr;
if (mode.resolution >= UCHAR_MAX)
return EINVAL;
else if (mode.resolution >= 200)
mode.resolution = MOUSE_RES_HIGH;
else if (mode.resolution >= 100)
mode.resolution = MOUSE_RES_MEDIUMHIGH;
else if (mode.resolution >= 50)
mode.resolution = MOUSE_RES_MEDIUMLOW;
else if (mode.resolution > 0)
mode.resolution = MOUSE_RES_LOW;
if (mode.resolution == MOUSE_RES_DEFAULT)
mode.resolution = sc->dflt_mode.resolution;
else if (mode.resolution == -1)
mode.resolution = sc->mode.resolution;
else if (mode.resolution < 0) /* MOUSE_RES_LOW/MEDIUM/HIGH */
mode.resolution = MOUSE_RES_LOW - mode.resolution;
error = block_mouse_data(sc, &command_byte);
if (error)
return error;
sc->mode.resolution = set_mouse_resolution(sc->kbdc, mode.resolution);
if (sc->mode.resolution != mode.resolution)
error = EIO;
unblock_mouse_data(sc, command_byte);
break;
#endif /* MOUSE_SETRESOLUTION */
#if (defined(MOUSE_SETRATE))
case MOUSE_SETRATE:
mode.rate = *(int *)addr;
if (mode.rate > UCHAR_MAX)
return EINVAL;
if (mode.rate == 0)
mode.rate = sc->dflt_mode.rate;
else if (mode.rate < 0)
mode.rate = sc->mode.rate;
error = block_mouse_data(sc, &command_byte);
if (error)
return error;
sc->mode.rate = set_mouse_sampling_rate(sc->kbdc, mode.rate);
if (sc->mode.rate != mode.rate)
error = EIO;
unblock_mouse_data(sc, command_byte);
break;
#endif /* MOUSE_SETRATE */
#if (defined(MOUSE_SETSCALING))
case MOUSE_SETSCALING:
if ((*(int *)addr <= 0) || (*(int *)addr > 2))
return EINVAL;
error = block_mouse_data(sc, &command_byte);
if (error)
return error;
if (!set_mouse_scaling(sc->kbdc, *(int *)addr))
error = EIO;
unblock_mouse_data(sc, command_byte);
break;
#endif /* MOUSE_SETSCALING */
#if (defined(MOUSE_GETHWID))
case MOUSE_GETHWID:
error = block_mouse_data(sc, &command_byte);
if (error)
return error;
sc->hw.hwid = get_aux_id(sc->kbdc);
*(int *)addr = sc->hw.hwid;
unblock_mouse_data(sc, command_byte);
break;
#endif /* MOUSE_GETHWID */
default:
return ENOTTY;
}
return error;
}
static void
psmintr(void *arg)
{
/*
* the table to turn PS/2 mouse button bits (MOUSE_PS2_BUTTON?DOWN)
* into `mousestatus' button bits (MOUSE_BUTTON?DOWN).
*/
static int butmap[8] = {
0,
MOUSE_BUTTON1DOWN,
MOUSE_BUTTON3DOWN,
MOUSE_BUTTON1DOWN | MOUSE_BUTTON3DOWN,
MOUSE_BUTTON2DOWN,
MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN,
MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN,
MOUSE_BUTTON1DOWN | MOUSE_BUTTON2DOWN | MOUSE_BUTTON3DOWN
};
register struct psm_softc *sc = arg;
mousestatus_t ms;
int x, y, z;
int c;
int l;
/* read until there is nothing to read */
while((c = read_aux_data_no_wait(sc->kbdc)) != -1) {
/* discard the byte if the device is not open */
if ((sc->state & PSM_OPEN) == 0)
continue;
/*
* Check sync bits. We check for overflow bits and the bit 3
* for most mice. True, the code doesn't work if overflow
* condition occurs. But we expect it rarely happens...
*/
if ((sc->inputbytes == 0)
&& ((c & sc->mode.syncmask[0]) != sc->mode.syncmask[1])) {
log(LOG_DEBUG, "psmintr: out of sync (%04x != %04x).\n",
c & sc->mode.syncmask[0], sc->mode.syncmask[1]);
continue;
}
sc->ipacket[sc->inputbytes++] = c;
if (sc->inputbytes < sc->mode.packetsize)
continue;
#if 0
log(LOG_DEBUG, "psmintr: %02x %02x %02x %02x %02x %02x\n",
sc->ipacket[0], sc->ipacket[1], sc->ipacket[2],
sc->ipacket[3], sc->ipacket[4], sc->ipacket[5]);
#endif
c = sc->ipacket[0];
/*
* A kludge for Kensington device!
* The MSB of the horizontal count appears to be stored in
* a strange place. This kludge doesn't affect other mice
* because the bit is the overflow bit which is, in most cases,
* expected to be zero when we reach here. XXX
*/
sc->ipacket[1] |= (c & MOUSE_PS2_XOVERFLOW) ? 0x80 : 0;
/* ignore the overflow bits... */
x = (c & MOUSE_PS2_XNEG) ? sc->ipacket[1] - 256 : sc->ipacket[1];
y = (c & MOUSE_PS2_YNEG) ? sc->ipacket[2] - 256 : sc->ipacket[2];
z = 0;
ms.obutton = sc->button; /* previous button state */
ms.button = butmap[c & MOUSE_PS2_BUTTONS];
/* `tapping' action */
if (sc->config & PSM_CONFIG_FORCETAP)
ms.button |= ((c & MOUSE_PS2_TAP)) ? 0 : MOUSE_BUTTON4DOWN;
switch (sc->hw.model) {
case MOUSE_MODEL_INTELLI:
case MOUSE_MODEL_NET:
/* wheel data is in the fourth byte */
z = (char)sc->ipacket[3];
break;
case MOUSE_MODEL_MOUSEMANPLUS:
if ((c & ~MOUSE_PS2_BUTTONS) == 0xc8) {
/* the extended data packet encodes button and wheel events */
x = y = 0;
z = (sc->ipacket[2] & MOUSE_PS2PLUS_ZNEG)
? (sc->ipacket[2] & 0x0f) - 16 : (sc->ipacket[2] & 0x0f);
ms.button |= (sc->ipacket[2] & MOUSE_PS2PLUS_BUTTON4DOWN)
? MOUSE_BUTTON4DOWN : 0;
} else {
/* preserve button states */
ms.button |= ms.obutton & MOUSE_EXTBUTTONS;
}
break;
case MOUSE_MODEL_GLIDEPOINT:
/* `tapping' action */
ms.button |= ((c & MOUSE_PS2_TAP)) ? 0 : MOUSE_BUTTON4DOWN;
break;
case MOUSE_MODEL_NETSCROLL:
/* three addtional bytes encode button and wheel events */
ms.button |= (sc->ipacket[3] & MOUSE_PS2_BUTTON3DOWN)
? MOUSE_BUTTON4DOWN : 0;
z = (sc->ipacket[3] & MOUSE_PS2_XNEG)
? sc->ipacket[4] - 256 : sc->ipacket[4];
break;
case MOUSE_MODEL_THINK:
/* the fourth button state in the first byte */
ms.button |= (c & MOUSE_PS2_TAP) ? MOUSE_BUTTON4DOWN : 0;
break;
case MOUSE_MODEL_GENERIC:
default:
break;
}
/* scale values */
if (sc->mode.accelfactor >= 1) {
if (x != 0) {
x = x * x / sc->mode.accelfactor;
if (x == 0)
x = 1;
if (c & MOUSE_PS2_XNEG)
x = -x;
}
if (y != 0) {
y = y * y / sc->mode.accelfactor;
if (y == 0)
y = 1;
if (c & MOUSE_PS2_YNEG)
y = -y;
}
}
ms.dx = x;
ms.dy = y;
ms.dz = z;
ms.flags = ((x || y || z) ? MOUSE_POSCHANGED : 0)
| (ms.obutton ^ ms.button);
if (sc->mode.level < PSM_LEVEL_NATIVE)
sc->inputbytes = tame_mouse(sc, &ms, sc->ipacket);
sc->status.flags |= ms.flags;
sc->status.dx += ms.dx;
sc->status.dy += ms.dy;
sc->status.dz += ms.dz;
sc->status.button = ms.button;
sc->button = ms.button;
/* queue data */
if (sc->queue.count + sc->inputbytes < sizeof(sc->queue.buf)) {
l = min(sc->inputbytes, sizeof(sc->queue.buf) - sc->queue.tail);
bcopy(&sc->ipacket[0], &sc->queue.buf[sc->queue.tail], l);
if (sc->inputbytes > l)
bcopy(&sc->ipacket[l], &sc->queue.buf[0], sc->inputbytes - l);
sc->queue.tail =
(sc->queue.tail + sc->inputbytes) % sizeof(sc->queue.buf);
sc->queue.count += sc->inputbytes;
}
sc->inputbytes = 0;
if (sc->state & PSM_ASLP) {
sc->state &= ~PSM_ASLP;
wakeup((caddr_t) sc);
}
selwakeup(&sc->rsel);
}
}
static int
psmpoll(dev_t dev, int events, struct proc *p)
{
struct psm_softc *sc = PSM_SOFTC(PSM_UNIT(dev));
int s;
int revents = 0;
/* Return true if a mouse event available */
s = spltty();
if (events & (POLLIN | POLLRDNORM)) {
if (sc->queue.count > 0)
revents |= events & (POLLIN | POLLRDNORM);
else
selrecord(p, &sc->rsel);
}
splx(s);
return (revents);
}
/* vendor/model specific routines */
static int mouse_id_proc1(KBDC kbdc, int res, int scale, int *status)
{
if (set_mouse_resolution(kbdc, res) != res)
return FALSE;
if (set_mouse_scaling(kbdc, scale)
&& set_mouse_scaling(kbdc, scale)
&& set_mouse_scaling(kbdc, scale)
&& (get_mouse_status(kbdc, status, 0, 3) >= 3))
return TRUE;
return FALSE;
}
#if notyet
/* Logitech MouseMan Cordless II */
static int
enable_lcordless(struct psm_softc *sc)
{
int status[3];
int ch;
if (!mouse_id_proc1(sc->kbdc, PSMD_RES_HIGH, 2, status))
return FALSE;
if (status[1] == PSMD_RES_HIGH)
return FALSE;
ch = (status[0] & 0x07) - 1; /* channel # */
if ((ch <= 0) || (ch > 4))
return FALSE;
/*
* status[1]: always one?
* status[2]: battery status? (0-100)
*/
return TRUE;
}
#endif /* notyet */
/* Genius NetScroll Mouse */
static int
enable_groller(struct psm_softc *sc)
{
int status[3];
/*
* The special sequence to enable the fourth button and the
* roller. Immediately after this sequence check status bytes.
* if the mouse is NetScroll, the second and the third bytes are
* '3' and 'D'.
*/
/*
* If the mouse is an ordinary PS/2 mouse, the status bytes should
* look like the following.
*
* byte 1 bit 7 always 0
* bit 6 stream mode (0)
* bit 5 disabled (0)
* bit 4 1:1 scaling (0)
* bit 3 always 0
* bit 0-2 button status
* byte 2 resolution (PSMD_RES_HIGH)
* byte 3 report rate (?)
*/
if (!mouse_id_proc1(sc->kbdc, PSMD_RES_HIGH, 1, status))
return FALSE;
if ((status[1] != '3') || (status[2] != 'D'))
return FALSE;
/* FIXME!! */
sc->hw.buttons = get_mouse_buttons(sc->kbdc);
sc->hw.buttons = 4;
return TRUE;
}
/* Genius NetMouse/NetMouse Pro */
static int
enable_gmouse(struct psm_softc *sc)
{
int status[3];
/*
* The special sequence to enable the middle, "rubber" button.
* Immediately after this sequence check status bytes.
* if the mouse is NetMouse, NetMouse Pro, or ASCII MIE Mouse,
* the second and the third bytes are '3' and 'U'.
* NOTE: NetMouse reports that it has three buttons although it has
* two buttons and a rubber button. NetMouse Pro and MIE Mouse
* say they have three buttons too and they do have a button on the
* side...
*/
if (!mouse_id_proc1(sc->kbdc, PSMD_RES_HIGH, 1, status))
return FALSE;
if ((status[1] != '3') || (status[2] != 'U'))
return FALSE;
return TRUE;
}
/* ALPS GlidePoint */
static int
enable_aglide(struct psm_softc *sc)
{
int status[3];
/*
* The special sequence to obtain ALPS GlidePoint specific
* information. Immediately after this sequence, status bytes will
* contain something interesting.
* NOTE: ALPS produces several models of GlidePoint. Some of those
* do not respond to this sequence, thus, cannot be detected this way.
*/
if (!mouse_id_proc1(sc->kbdc, PSMD_RES_LOW, 2, status))
return FALSE;
if ((status[0] & 0x10) || (status[1] == PSMD_RES_LOW))
return FALSE;
return TRUE;
}
/* Kensington ThinkingMouse/Trackball */
static int
enable_kmouse(struct psm_softc *sc)
{
static unsigned char rate[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
KBDC kbdc = sc->kbdc;
int status[3];
int id1;
int id2;
int i;
id1 = get_aux_id(kbdc);
if (set_mouse_sampling_rate(kbdc, 10) != 10)
return FALSE;
/*
* The device is now in the native mode? It returns a different
* ID value...
*/
id2 = get_aux_id(kbdc);
if ((id1 == id2) || (id2 != 2))
return FALSE;
if (set_mouse_resolution(kbdc, PSMD_RES_LOW) != PSMD_RES_LOW)
return FALSE;
#if PSM_DEBUG >= 2
/* at this point, resolution is LOW, sampling rate is 10/sec */
if (get_mouse_status(kbdc, status, 0, 3) < 3)
return FALSE;
#endif
/*
* The special sequence to enable the third and fourth buttons.
* Otherwise they behave like the first and second buttons.
*/
for (i = 0; i < sizeof(rate)/sizeof(rate[0]); ++i) {
if (set_mouse_sampling_rate(kbdc, rate[i]) != rate[i])
return FALSE;
}
/*
* At this point, the device is using default resolution and
* sampling rate for the native mode.
*/
if (get_mouse_status(kbdc, status, 0, 3) < 3)
return FALSE;
if ((status[1] == PSMD_RES_LOW) || (status[2] == rate[i - 1]))
return FALSE;
/* the device appears be enabled by this sequence, diable it for now */
disable_aux_dev(kbdc);
empty_aux_buffer(kbdc, 5);
return TRUE;
}
/* Logitech MouseMan+/FirstMouse+ */
static int
enable_mmanplus(struct psm_softc *sc)
{
static char res[] = {
-1, PSMD_RES_LOW, PSMD_RES_HIGH, PSMD_RES_MEDIUM_HIGH,
PSMD_RES_MEDIUM_LOW, -1, PSMD_RES_HIGH, PSMD_RES_MEDIUM_LOW,
PSMD_RES_MEDIUM_HIGH, PSMD_RES_HIGH,
};
KBDC kbdc = sc->kbdc;
int data[3];
int i;
/* the special sequence to enable the fourth button and the roller. */
for (i = 0; i < sizeof(res)/sizeof(res[0]); ++i) {
if (res[i] < 0) {
if (!set_mouse_scaling(kbdc, 1))
return FALSE;
} else {
if (set_mouse_resolution(kbdc, res[i]) != res[i])
return FALSE;
}
}
if (get_mouse_status(kbdc, data, 1, 3) < 3)
return FALSE;
/*
* MouseMan+ and FirstMouse+ return following data.
*
* byte 1 0xc8
* byte 2 ?? (MouseMan+:0xc2, FirstMouse+:0xc6)
* byte 3 model ID? MouseMan+:0x50, FirstMouse+:0x51
*/
if ((data[0] & ~MOUSE_PS2_BUTTONS) != 0xc8)
return FALSE;
/*
* MouseMan+ (or FirstMouse+) is now in its native mode, in which
* the wheel and the fourth button events are encoded in the
* special data packet. The mouse may be put in the IntelliMouse mode
* if it is initialized by the IntelliMouse's method.
*/
return TRUE;
}
/* MS IntelliMouse */
static int
enable_msintelli(struct psm_softc *sc)
{
/*
* Logitech MouseMan+ and FirstMouse+ will also respond to this
* probe routine and act like IntelliMouse.
*/
static unsigned char rate[] = { 200, 100, 80, };
KBDC kbdc = sc->kbdc;
int id;
int i;
/* the special sequence to enable the third button and the roller. */
for (i = 0; i < sizeof(rate)/sizeof(rate[0]); ++i) {
if (set_mouse_sampling_rate(kbdc, rate[i]) != rate[i])
return FALSE;
}
/* the device will give the genuine ID only after the above sequence */
id = get_aux_id(kbdc);
if (id != PSM_INTELLI_ID)
return FALSE;
sc->hw.hwid = id;
sc->hw.buttons = 3;
return TRUE;
}
#ifdef PSM_HOOKAPM
static int
psmresume(void *dummy)
{
struct psm_softc *sc = PSM_SOFTC((int)dummy);
int unit = (int)dummy;
int err = 0;
int s;
int c;
if (verbose >= 2)
log(LOG_NOTICE, "psm%d: APM resume hook called.\n", unit);
/* don't let anybody mess with the aux device */
if (!kbdc_lock(sc->kbdc, TRUE))
return (EIO);
s = spltty();
/* save the current controller command byte */
empty_both_buffers(sc->kbdc, 10);
c = get_controller_command_byte(sc->kbdc);
if (verbose >= 2)
log(LOG_DEBUG, "psm%d: current command byte: %04x (psmresume).\n",
unit, c);
/* enable the aux port but disable the aux interrupt and the keyboard */
if ((c == -1) || !set_controller_command_byte(sc->kbdc,
kbdc_get_device_mask(sc->kbdc),
KBD_DISABLE_KBD_PORT | KBD_DISABLE_KBD_INT
| KBD_ENABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/* CONTROLLER ERROR */
splx(s);
kbdc_lock(sc->kbdc, FALSE);
log(LOG_ERR, "psm%d: unable to set the command byte (psmresume).\n",
unit);
return (EIO);
}
/* flush any data */
if (sc->state & PSM_VALID) {
disable_aux_dev(sc->kbdc); /* this may fail; but never mind... */
empty_aux_buffer(sc->kbdc, 10);
}
sc->inputbytes = 0;
#ifdef PSM_RESETAFTERSUSPEND
/* try to detect the aux device; are you still there? */
if (reinitialize(unit, &sc->mode)) {
/* yes */
sc->state |= PSM_VALID;
} else {
/* the device has gone! */
restore_controller(sc->kbdc, c);
sc->state &= ~PSM_VALID;
log(LOG_ERR, "psm%d: the aux device has gone! (psmresume).\n",
unit);
err = ENXIO;
}
#endif /* PSM_RESETAFTERSUSPEND */
splx(s);
/* restore the driver state */
if ((sc->state & PSM_OPEN) && (err == 0)) {
/* enable the aux device and the port again */
err = doopen(unit, c);
if (err != 0)
log(LOG_ERR, "psm%d: failed to enable the device (psmresume).\n",
unit);
} else {
/* restore the keyboard port and disable the aux port */
if (!set_controller_command_byte(sc->kbdc,
kbdc_get_device_mask(sc->kbdc),
(c & KBD_KBD_CONTROL_BITS)
| KBD_DISABLE_AUX_PORT | KBD_DISABLE_AUX_INT)) {
/* CONTROLLER ERROR */
log(LOG_ERR, "psm%d: failed to disable the aux port (psmresume).\n",
unit);
err = EIO;
}
}
/* done */
kbdc_lock(sc->kbdc, FALSE);
if ((sc->state & PSM_ASLP) && !(sc->state & PSM_VALID)) {
/*
* Release the blocked process; it must be notified that the device
* cannot be accessed anymore.
*/
sc->state &= ~PSM_ASLP;
wakeup((caddr_t)sc);
}
if (verbose >= 2)
log(LOG_DEBUG, "psm%d: APM resume hook exiting.\n", unit);
return (err);
}
#endif /* PSM_HOOKAPM */
DEV_DRIVER_MODULE(psm, atkbdc, psm_driver, psm_devclass,
CDEV_MAJOR, NOMAJ, psm_cdevsw, 0, 0);
#endif /* NPSM > 0 */
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