1 /* $NetBSD: sbsmbus.c,v 1.8 2003/07/15 02:43:41 lukem Exp $ */ 2 3 /* 4 * Copyright 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: sbsmbus.c,v 1.8 2003/07/15 02:43:41 lukem Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/device.h> 43 #include <sys/systm.h> 44 45 #include <machine/swarm.h> 46 #include <mips/sibyte/dev/sbsmbusvar.h> 47 48 #include <dev/smbus/x1241reg.h> 49 #include <dev/smbus/m41t81reg.h> 50 51 #include "locators.h" 52 53 static int smbus_match(struct device *, struct cfdata *, void *); 54 static void smbus_attach(struct device *, struct device *, void *); 55 static int smbus_print(void *, const char *); 56 static int smbus_submatch(struct device *, struct cfdata *, void *); 57 58 CFATTACH_DECL(smbus, sizeof(struct device), 59 smbus_match, smbus_attach, NULL, NULL); 60 61 /* autoconfiguration match information for zbbus children */ 62 struct smbus_attach_locs { 63 int sa_interface; 64 int sa_device; 65 }; 66 67 /* XXX XXX this table should be imported from machine-specific code XXX XXX */ 68 static const struct smbus_attach_locs smbus_devs[] = { 69 { X1241_SMBUS_CHAN, X1241_RTC_SLAVEADDR }, 70 { M41T81_SMBUS_CHAN, M41T81_SLAVEADDR }, 71 }; 72 static const int smbus_dev_count = sizeof smbus_devs / sizeof smbus_devs[0]; 73 74 static int found = 0; 75 76 static int 77 smbus_match(struct device *parent, struct cfdata *match, void *aux) 78 { 79 80 /* 2 SMBus's on the BCM112x and BCM1250 */ 81 return (found < 2); 82 } 83 84 static void 85 smbus_attach(struct device *parent, struct device *self, void *aux) 86 { 87 struct smbus_attach_args sa; 88 int i; 89 90 found++; 91 printf("\n"); 92 93 for (i = 0; i < smbus_dev_count; i++) { 94 if (self->dv_unit != smbus_devs[i].sa_interface) 95 continue; 96 97 memset(&sa, 0, sizeof sa); 98 sa.sa_interface = smbus_devs[i].sa_interface; 99 sa.sa_device = smbus_devs[i].sa_device; 100 config_found_sm(self, &sa, smbus_print, smbus_submatch); 101 } 102 } 103 104 105 static int 106 smbus_print(void *aux, const char *pnp) 107 { 108 struct smbus_attach_args *sa = aux; 109 110 if (pnp) 111 aprint_normal("rtc0 at %s", pnp); /* XXX! */ 112 aprint_normal(" device 0x%x", sa->sa_device); 113 114 return (UNCONF); 115 } 116 117 static int 118 smbus_submatch(struct device *parent, struct cfdata *cf, void *aux) 119 { 120 struct smbus_attach_args *sa = aux; 121 122 if (cf->cf_loc[SMBUSCF_DEV] != SMBUSCF_DEV_DEFAULT && 123 cf->cf_loc[SMBUSCF_DEV] != sa->sa_device) 124 return (0); 125 126 return (config_match(parent, cf, aux)); 127 } 128