1 /* $NetBSD: sata_subr.c,v 1.2 2005/12/11 12:21:14 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of Wasabi Systems, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Common functions for Serial ATA. 41 */ 42 43 #include <sys/param.h> 44 45 #include <dev/ata/satareg.h> 46 #include <dev/ata/satavar.h> 47 48 /* 49 * sata_speed: 50 * 51 * Return a string describing the port speed reported by 52 * the port's SStatus register. 53 */ 54 const char * 55 sata_speed(uint32_t sstatus) 56 { 57 static const char *sata_speedtab[] = { 58 "no negotiated speed", 59 "1.5Gb/s", 60 "3.0GB/s", 61 "<unknown 3>", 62 "<unknown 4>", 63 "<unknown 5>", 64 "<unknown 6>", 65 "<unknown 7>", 66 "<unknown 8>", 67 "<unknown 9>", 68 "<unknown 10>", 69 "<unknown 11>", 70 "<unknown 12>", 71 "<unknown 13>", 72 "<unknown 14>", 73 "<unknown 15>", 74 }; 75 76 return (sata_speedtab[(sstatus & SStatus_SPD_mask) >> 77 SStatus_SPD_shift]); 78 } 79