diff options
Diffstat (limited to 'sys/arch/sparc/dev/event.c')
| -rw-r--r-- | sys/arch/sparc/dev/event.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/sys/arch/sparc/dev/event.c b/sys/arch/sparc/dev/event.c deleted file mode 100644 index 3e25c91edb4..00000000000 --- a/sys/arch/sparc/dev/event.c +++ /dev/null @@ -1,171 +0,0 @@ -/* $NetBSD: event.c,v 1.3 1994/11/20 20:52:13 deraadt Exp $ */ - -/* - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * This software was developed by the Computer Systems Engineering group - * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and - * contributed to Berkeley. - * - * All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Lawrence Berkeley Laboratory. - * - * 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 University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. - * - * @(#)event.c 8.1 (Berkeley) 6/11/93 - */ - -/* - * Internal `Firm_event' interface for the keyboard and mouse drivers. - */ - -#include <sys/param.h> -#include <sys/fcntl.h> -#include <sys/malloc.h> -#include <sys/proc.h> -#include <sys/systm.h> -#include <sys/vnode.h> - -#include <machine/vuid_event.h> -#include <sparc/dev/event_var.h> - -/* - * Initialize a firm_event queue. - */ -void -ev_init(ev) - register struct evvar *ev; -{ - - ev->ev_get = ev->ev_put = 0; - ev->ev_q = malloc((u_long)EV_QSIZE * sizeof(struct firm_event), - M_DEVBUF, M_WAITOK); - bzero((caddr_t)ev->ev_q, EV_QSIZE * sizeof(struct firm_event)); -} - -/* - * Tear down a firm_event queue. - */ -void -ev_fini(ev) - register struct evvar *ev; -{ - - free(ev->ev_q, M_DEVBUF); -} - -/* - * User-level interface: read, select. - * (User cannot write an event queue.) - */ -int -ev_read(ev, uio, flags) - register struct evvar *ev; - struct uio *uio; - int flags; -{ - int s, n, cnt, error; - - /* - * Make sure we can return at least 1. - */ - if (uio->uio_resid < sizeof(struct firm_event)) - return (EMSGSIZE); /* ??? */ - s = splev(); - while (ev->ev_get == ev->ev_put) { - if (flags & IO_NDELAY) { - splx(s); - return (EWOULDBLOCK); - } - ev->ev_wanted = 1; - error = tsleep((caddr_t)ev, PEVENT | PCATCH, "firm_event", 0); - if (error) { - splx(s); - return (error); - } - } - /* - * Move firm_events from tail end of queue (there is at least one - * there). - */ - if (ev->ev_put < ev->ev_get) - cnt = EV_QSIZE - ev->ev_get; /* events in [get..QSIZE) */ - else - cnt = ev->ev_put - ev->ev_get; /* events in [get..put) */ - splx(s); - n = howmany(uio->uio_resid, sizeof(struct firm_event)); - if (cnt > n) - cnt = n; - error = uiomove((caddr_t)&ev->ev_q[ev->ev_get], - cnt * sizeof(struct firm_event), uio); - n -= cnt; - /* - * If we do not wrap to 0, used up all our space, or had an error, - * stop. Otherwise move from front of queue to put index, if there - * is anything there to move. - */ - if ((ev->ev_get = (ev->ev_get + cnt) % EV_QSIZE) != 0 || - n == 0 || error || (cnt = ev->ev_put) == 0) - return (error); - if (cnt > n) - cnt = n; - error = uiomove((caddr_t)&ev->ev_q[0], - cnt * sizeof(struct firm_event), uio); - ev->ev_get = cnt; - return (error); -} - -int -ev_select(ev, rw, p) - register struct evvar *ev; - int rw; - struct proc *p; -{ - int s = splev(); - - switch (rw) { - - case FREAD: - /* succeed if there is something to read */ - if (ev->ev_get != ev->ev_put) { - splx(s); - return (1); - } - selrecord(p, &ev->ev_sel); - break; - - case FWRITE: - return (1); /* always fails => never blocks */ - } - splx(s); - return (0); -} |