1 /* $NetBSD: sbsmbus.c,v 1.6 2002/11/12 01:22:26 simonb 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/param.h> 39 #include <sys/device.h> 40 #include <sys/systm.h> 41 42 #include <machine/swarm.h> 43 #include <mips/sibyte/dev/sbsmbusvar.h> 44 45 #include <dev/smbus/x1241reg.h> 46 #include <dev/smbus/m41t81reg.h> 47 48 #include "locators.h" 49 50 static int smbus_match(struct device *, struct cfdata *, void *); 51 static void smbus_attach(struct device *, struct device *, void *); 52 static int smbus_print(void *, const char *); 53 static int smbus_submatch(struct device *, struct cfdata *, void *); 54 55 CFATTACH_DECL(smbus, sizeof(struct device), 56 smbus_match, smbus_attach, NULL, NULL); 57 58 /* autoconfiguration match information for zbbus children */ 59 struct smbus_attach_locs { 60 int sa_interface; 61 int sa_device; 62 }; 63 64 /* XXX XXX this table should be imported from machine-specific code XXX XXX */ 65 static const struct smbus_attach_locs smbus_devs[] = { 66 { X1241_SMBUS_CHAN, X1241_RTC_SLAVEADDR }, 67 { M41T81_SMBUS_CHAN, M41T81_SLAVEADDR }, 68 }; 69 static const int smbus_dev_count = sizeof smbus_devs / sizeof smbus_devs[0]; 70 71 static int found = 0; 72 73 static int 74 smbus_match(struct device *parent, struct cfdata *match, void *aux) 75 { 76 77 /* 2 SMBus's on the BCM112x and BCM1250 */ 78 return (found < 2); 79 } 80 81 static void 82 smbus_attach(struct device *parent, struct device *self, void *aux) 83 { 84 struct smbus_attach_args sa; 85 int i; 86 87 found++; 88 printf("\n"); 89 90 for (i = 0; i < smbus_dev_count; i++) { 91 if (self->dv_unit != smbus_devs[i].sa_interface) 92 continue; 93 94 memset(&sa, 0, sizeof sa); 95 sa.sa_interface = smbus_devs[i].sa_interface; 96 sa.sa_device = smbus_devs[i].sa_device; 97 config_found_sm(self, &sa, smbus_print, smbus_submatch); 98 } 99 } 100 101 102 static int 103 smbus_print(void *aux, const char *pnp) 104 { 105 struct smbus_attach_args *sa = aux; 106 107 if (pnp) 108 printf("rtc0 at %s", pnp); /* XXX! */ 109 printf(" device 0x%x", sa->sa_device); 110 111 return (UNCONF); 112 } 113 114 static int 115 smbus_submatch(struct device *parent, struct cfdata *cf, void *aux) 116 { 117 struct smbus_attach_args *sa = aux; 118 119 if (cf->cf_loc[SMBUSCF_DEV] != SMBUSCF_DEV_DEFAULT && 120 cf->cf_loc[SMBUSCF_DEV] != sa->sa_device) 121 return (0); 122 123 return (config_match(parent, cf, aux)); 124 } 125