79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
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/* $NetBSD: sata_subr.c,v 1.1 2004/05/28 23:26:27 thorpej Exp $ */
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/*-
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* Copyright (c) 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Common functions for Serial ATA.
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*/
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#include <sys/param.h>
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#include <dev/ata/satareg.h>
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#include <dev/ata/satavar.h>
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/*
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* sata_speed:
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*
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* Return a string describing the port speed reported by
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* the port's SStatus register.
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*/
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const char *
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sata_speed(uint32_t sstatus)
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{
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static const char *sata_speedtab[] = {
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"no negotiated speed",
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"1.5Gb/s",
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"3.0GB/s",
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"<unknown 3>",
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"<unknown 4>",
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"<unknown 5>",
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"<unknown 6>",
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"<unknown 7>",
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"<unknown 8>",
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"<unknown 9>",
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"<unknown 10>",
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"<unknown 11>",
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"<unknown 12>",
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"<unknown 13>",
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"<unknown 14>",
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"<unknown 15>",
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};
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return (sata_speedtab[(sstatus & SStatus_SPD_mask) >>
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SStatus_SPD_shift]);
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}
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