| 1 | /* $ZEL: sis1100_synch_handler.c,v 1.4 2004/05/27 23:10:35 wuestner Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (c) 2003-2004
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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 | /*
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| 32 | * This function ist started by a timer (sc->link_up_timer) 1 second after
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| 33 | * the optical link state has changed.
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| 34 | * It is executed in irq context!
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| 35 | * The awakened kernel thread (sis1100_irq_thread) calls
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| 36 | * sis1100_synch_handler below
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| 37 | */
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| 38 | void
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| 39 | #ifdef __NetBSD__
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| 40 | sis1100_link_up_handler(void* data)
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| 41 | #elif __linux__
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| 42 | sis1100_link_up_handler(unsigned long data)
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| 43 | #endif
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| 44 | {
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| 45 | struct sis1100_softc* sc=(struct sis1100_softc*)data;
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| 46 | DECLARE_SPINLOCKFLAGS(flags)
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| 47 |
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| 48 | SPIN_LOCK_IRQSAVE(sc->handlercommand.lock, flags);
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| 49 | sc->handlercommand.command|=handlercomm_synch;
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| 50 | SPIN_UNLOCK_IRQRESTORE(sc->handlercommand.lock, flags);
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| 51 | #ifdef __NetBSD__
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| 52 | wakeup(&sc->handler_wait);
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| 53 | #elif __linux__
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| 54 | wake_up(&sc->handler_wait);
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| 55 | #endif
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| 56 | }
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| 57 |
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| 58 | /*
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| 59 | * this is called from _sis1100_irq_thread
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| 60 | */
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| 61 | void
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| 62 | sis1100_synch_handler(struct sis1100_softc* sc)
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| 63 | {
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| 64 | u_int32_t status;
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| 65 |
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| 66 | /* pINFO(sc, "synch_handler called"); */
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| 67 | sis1100_enable_irq(sc, 0, irq_synch_chg|irq_reset_req|irq_prot_l_err);
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| 68 | status=sis1100readreg(sc, sr);
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| 69 |
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| 70 | if ((status&sr_synch)==sr_synch) {
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| 71 | if (sc->remote_hw==sis1100_hw_invalid) {
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| 72 | sis1100_init_remote(sc);
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| 73 | } else {
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| 74 | pINFO(sc, "synch_handler: remote_hw=%d (not hw_invalid)",
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| 75 | sc->remote_hw);
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| 76 | sis1100_init_remote(sc);
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| 77 | }
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| 78 | }
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| 79 | }
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