| 1 | /* $ZEL: plx9054_reset.c,v 1.1 2003/08/30 21:32:01 wuestner Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (c) 2001, 2003
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| 5 | * Willi Erven, 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 AUTHOR 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(S) 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 | /* only used in initialisation; no need for semaphores */
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| 32 |
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| 33 | void sis1100_reset_plx(struct sis1100_softc* sc)
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| 34 | {
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| 35 | u_int32_t conf_3C=0;
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| 36 | int c;
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| 37 |
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| 38 | /* save value of irq-line, it will be cleared during reset */
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| 39 | #ifdef __NetBSD__
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| 40 | conf_3C=pci_conf_read(sc->sc_pc, sc->sc_pcitag, PCI_INTERRUPT_REG);
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| 41 | #elif __linux__
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| 42 | pci_read_config_dword(sc->pcidev, 0x3c, &conf_3C);
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| 43 | #endif
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| 44 | _plxwritereg_1(sc, 0x6f, 0x40);
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| 45 | wmb_plx();
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| 46 | _plxwritereg_1(sc, 0x6f, 0x00);
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| 47 | wmb_plx();
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| 48 | _plxwritereg_1(sc, 0x6f, 0x20);
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| 49 | mb_plx();
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| 50 | c=0;
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| 51 | while ((!(plxreadreg(sc, LAS0RR)) || (c<10)) && (++c<50));
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| 52 | _plxwritereg_1(sc, 0x6f, 0x00);
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| 53 |
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| 54 | /* restore value of irq-line */
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| 55 | #ifdef __NetBSD__
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| 56 | pci_conf_write(sc->sc_pc, sc->sc_pcitag, PCI_INTERRUPT_REG, conf_3C);
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| 57 | #elif __linux__
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| 58 | pci_write_config_dword(sc->pcidev, 0x3c, conf_3C);
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| 59 | #endif
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| 60 | }
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