[src/trunk]: src/sys/dev/usb Support for SIGIO.

[augustss <augustss%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f912e3bd4322
branches:  trunk
changeset: 484893:f912e3bd4322
user:      augustss <augustss%NetBSD.org@localhost>
date:      Fri Apr 14 14:12:47 2000 +0000

description:
Support for SIGIO.

diffstat:

 sys/dev/usb/uhid.c |  30 +++++++++++++++++++++++++++++-
 1 files changed, 29 insertions(+), 1 deletions(-)

diffs (79 lines):

diff -r 36903b3437a4 -r f912e3bd4322 sys/dev/usb/uhid.c
--- a/sys/dev/usb/uhid.c        Fri Apr 14 14:12:11 2000 +0000
+++ b/sys/dev/usb/uhid.c        Fri Apr 14 14:12:47 2000 +0000
@@ -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 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 @@
                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 @@
 
        sc->sc_state &= ~UHID_IMMED;
 
+       sc->sc_async = 0;
+
        return (0);
 }
 
@@ -430,6 +438,8 @@
 
        sc->sc_state &= ~UHID_OPEN;
 
+       sc->sc_async = 0;
+
        return (0);
 }
 
@@ -591,6 +601,24 @@
                /* 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);