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Support for SIGIO.

This commit is contained in:
augustss 2000-04-14 14:12:47 +00:00
parent eaaf682603
commit e44f0f1147
1 changed files with 29 additions and 1 deletions
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30
sys/dev/usb/uhid.c
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@ -1,4 +1,4 @@
/* $NetBSD: uhid.c,v 1.36 2000/03/27 12:33:56 augustss Exp $ */
/* $NetBSD: uhid.c,v 1.37 2000/04/14 14:12:47 augustss Exp $ */
/* $FreeBSD: src/sys/dev/usb/uhid.c,v 1.22 1999/11/17 22:33:43 n_hibma Exp $ */
/*
@ -46,6 +46,7 @@
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/signalvar.h>
#if defined(__NetBSD__) || defined(__OpenBSD__)
#include <sys/device.h>
#include <sys/ioctl.h>
@ -103,6 +104,7 @@ struct uhid_softc {
struct clist sc_q;
struct selinfo sc_rsel;
struct proc *sc_async; /* process that wants SIGIO */
u_char sc_state; /* driver state */
#define UHID_OPEN 0x01 /* device is open */
#define UHID_ASLP 0x02 /* waiting for device data */
@ -356,6 +358,10 @@ uhid_intr(xfer, addr, status)
wakeup(&sc->sc_q);
}
selwakeup(&sc->sc_rsel);
if (sc->sc_async != NULL) {
DPRINTFN(3, ("uhid_intr: sending SIGIO %p\n", sc->sc_async));
psignal(sc->sc_async, SIGIO);
}
}
int
@ -402,6 +408,8 @@ uhidopen(dev, flag, mode, p)
sc->sc_state &= ~UHID_IMMED;
sc->sc_async = 0;
return (0);
}
@ -430,6 +438,8 @@ uhidclose(dev, flag, mode, p)
sc->sc_state &= ~UHID_OPEN;
sc->sc_async = 0;
return (0);
}
@ -591,6 +601,24 @@ uhid_do_ioctl(sc, cmd, addr, flag, p)
/* All handled in the upper FS layer. */
break;
case FIOASYNC:
if (*(int *)addr) {
if (sc->sc_async != NULL)
return (EBUSY);
sc->sc_async = p;
DPRINTF(("uhid_do_ioctl: FIOASYNC %p\n", p));
} else
sc->sc_async = NULL;
break;
/* XXX this is not the most general solution. */
case TIOCSPGRP:
if (sc->sc_async == NULL)
return (EINVAL);
if (*(int *)addr != sc->sc_async->p_pgid)
return (EPERM);
break;
case USB_GET_REPORT_DESC:
rd = (struct usb_ctl_report_desc *)addr;
size = min(sc->sc_repdesc_size, sizeof rd->data);