| 1 | /* $ZEL: sis1100_poll.c,v 1.3 2004/05/27 23:10:29 wuestner Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (c) 2004
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| 5 | * Peter Wuestner. All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions, and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 26 | * SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #include "sis1100_sc.h"
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| 30 |
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| 31 | #ifdef __NetBSD__
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| 32 |
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| 33 | int
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| 34 | sis1100_poll(dev_t dev, int events, struct proc *p)
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| 35 | {
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| 36 | struct sis1100_softc* sc=SIS1100SC(dev);
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| 37 | struct sis1100_fdata* fd=SIS1100FD(dev);
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| 38 | int s;
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| 39 | /*
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| 40 | pINFO(sc, "poll: events=0x%x pending=0x%x owned=0x%x", events,
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| 41 | sc->pending_irqs, fd->owned_irqs);
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| 42 | */
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| 43 | s = splbio();
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| 44 |
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| 45 | if (events & (POLLIN | POLLRDNORM)) {
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| 46 | if (irq_pending(sc, fd, fd->owned_irqs)) {
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| 47 | /*pINFO(sc, "poll: successfull");*/
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| 48 | splx(s);
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| 49 | return (events & (POLLIN | POLLRDNORM));
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| 50 | }
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| 51 | selrecord(p, &sc->sel);
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| 52 | }
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| 53 | splx(s);
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| 54 | return 0;
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| 55 | }
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| 56 |
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| 57 | #elif __linux__
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| 58 |
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| 59 | unsigned int
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| 60 | sis1100_poll(struct file* file, struct poll_table_struct* poll_table)
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| 61 | {
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| 62 | struct sis1100_softc* sc=SIS1100SC(file);
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| 63 | struct sis1100_fdata* fd=SIS1100FD(file);
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| 64 |
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| 65 | /*
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| 66 | * pINFO(sc, "poll: pending=0x%x poll_table=%p", sc->pending_irqs, poll_table);
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| 67 | */
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| 68 |
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| 69 | poll_wait(file, &sc->remoteirq_wait, poll_table);
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| 70 |
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| 71 | if (irq_pending(sc, fd, fd->owned_irqs))
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| 72 | return POLLIN|POLLRDNORM;
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| 73 | else
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| 74 | return 0;
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| 75 | }
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| 76 |
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| 77 | #endif
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