1 /* $NetBSD: obio.c,v 1.11 2002/10/03 20:14:58 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe 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 /* 39 * On-board device autoconfiguration support for Intel IQ80310 40 * evaluation boards. 41 * 42 * The "obio" device node handles all of the CPLD functions, 43 * as well ... timer, interrupts, etc. 44 */ 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/device.h> 49 50 #include <machine/autoconf.h> 51 #include <machine/bus.h> 52 53 #include <evbarm/iq80310/iq80310reg.h> 54 #include <evbarm/iq80310/iq80310var.h> 55 #include <evbarm/iq80310/obiovar.h> 56 57 #include "locators.h" 58 59 int obio_match(struct device *, struct cfdata *, void *); 60 void obio_attach(struct device *, struct device *, void *); 61 62 CFATTACH_DECL(obio, sizeof(struct device), 63 obio_match, obio_attach, NULL, NULL); 64 65 int obio_print(void *, const char *); 66 int obio_search(struct device *, struct cfdata *, void *); 67 68 /* there can be only one */ 69 int obio_found; 70 71 int 72 obio_match(struct device *parent, struct cfdata *cf, void *aux) 73 { 74 #if 0 75 struct mainbus_attach_args *ma = aux; 76 #endif 77 78 if (obio_found) 79 return (0); 80 81 #if 1 82 /* XXX Shoot arch/arm/mainbus in the head. */ 83 return (1); 84 #else 85 if (strcmp(cf->cf_name, ma->ma_name) == 0) 86 return (1); 87 88 return (0); 89 #endif 90 } 91 92 void 93 obio_attach(struct device *parent, struct device *self, void *aux) 94 { 95 96 obio_found = 1; 97 98 #if defined(IOP310_TEAMASA_NPWR) 99 /* 100 * These boards don't have revision/backplane detect registers. 101 * Just ignore it. 102 */ 103 printf("\n"); 104 #else /* Default to stock IQ80310 */ 105 { 106 /* 107 * Yes, we're using knowledge of the obio bus space internals, 108 * here. 109 */ 110 uint8_t board_rev = CPLD_READ(IQ80310_BOARD_REV); 111 uint8_t cpld_rev = CPLD_READ(IQ80310_CPLD_REV); 112 uint8_t backplane = CPLD_READ(IQ80310_BACKPLANE_DET); 113 114 printf(": board rev. %c, CPLD rev. %c, backplane %spresent\n", 115 BOARD_REV(board_rev), CPLD_REV(cpld_rev), 116 (backplane & 1) ? "" : "not "); 117 } 118 #endif /* list of IQ80310-based designs */ 119 120 /* 121 * Attach all the on-board devices as described in the kernel 122 * configuration file. 123 */ 124 config_search(obio_search, self, NULL); 125 } 126 127 int 128 obio_print(void *aux, const char *pnp) 129 { 130 struct obio_attach_args *oba = aux; 131 132 printf(" addr 0x%08lx", oba->oba_addr); 133 if (oba->oba_irq != -1) 134 printf(" xint3 %d", IRQ_XINT3(oba->oba_irq)); 135 136 return (UNCONF); 137 } 138 139 int 140 obio_search(struct device *parent, struct cfdata *cf, void *aux) 141 { 142 struct obio_attach_args oba; 143 144 oba.oba_st = &obio_bs_tag; 145 oba.oba_addr = cf->cf_loc[OBIOCF_ADDR]; 146 147 if (cf->cf_loc[OBIOCF_XINT3] != OBIOCF_XINT3_DEFAULT) 148 oba.oba_irq = XINT3_IRQ(cf->cf_loc[OBIOCF_XINT3]); 149 else 150 oba.oba_irq = -1; 151 152 if (config_match(parent, cf, &oba) > 0) 153 config_attach(parent, cf, &oba, obio_print); 154 155 return (0); 156 } 157