obio.c revision 1.16
1 /* $NetBSD: obio.c,v 1.16 2005/06/30 17:03:52 drochner Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002, 2003 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/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: obio.c,v 1.16 2005/06/30 17:03:52 drochner Exp $"); 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/device.h> 52 53 #include <machine/autoconf.h> 54 #include <machine/bus.h> 55 56 #include <evbarm/iq80310/iq80310reg.h> 57 #include <evbarm/iq80310/iq80310var.h> 58 #include <evbarm/iq80310/obiovar.h> 59 60 #include "locators.h" 61 62 int obio_match(struct device *, struct cfdata *, void *); 63 void obio_attach(struct device *, struct device *, void *); 64 65 CFATTACH_DECL(obio, sizeof(struct device), 66 obio_match, obio_attach, NULL, NULL); 67 68 int obio_print(void *, const char *); 69 int obio_search(struct device *, struct cfdata *, 70 const locdesc_t *, void *); 71 72 /* there can be only one */ 73 int obio_found; 74 75 int 76 obio_match(struct device *parent, struct cfdata *cf, void *aux) 77 { 78 #if 0 79 struct mainbus_attach_args *ma = aux; 80 #endif 81 82 if (obio_found) 83 return (0); 84 85 #if 1 86 /* XXX Shoot arch/arm/mainbus in the head. */ 87 return (1); 88 #else 89 if (strcmp(cf->cf_name, ma->ma_name) == 0) 90 return (1); 91 92 return (0); 93 #endif 94 } 95 96 void 97 obio_attach(struct device *parent, struct device *self, void *aux) 98 { 99 100 obio_found = 1; 101 102 #if defined(IOP310_TEAMASA_NPWR) 103 /* 104 * These boards don't have revision/backplane detect registers. 105 * Just ignore it. 106 */ 107 printf("\n"); 108 #else /* Default to stock IQ80310 */ 109 { 110 /* 111 * Yes, we're using knowledge of the obio bus space internals, 112 * here. 113 */ 114 uint8_t board_rev = CPLD_READ(IQ80310_BOARD_REV); 115 uint8_t cpld_rev = CPLD_READ(IQ80310_CPLD_REV); 116 uint8_t backplane = CPLD_READ(IQ80310_BACKPLANE_DET); 117 118 printf(": board rev. %c, CPLD rev. %c, backplane %spresent\n", 119 BOARD_REV(board_rev), CPLD_REV(cpld_rev), 120 (backplane & 1) ? "" : "not "); 121 } 122 #endif /* list of IQ80310-based designs */ 123 124 /* 125 * Attach all the on-board devices as described in the kernel 126 * configuration file. 127 */ 128 config_search_ia(obio_search, self, "obio", NULL); 129 } 130 131 int 132 obio_print(void *aux, const char *pnp) 133 { 134 struct obio_attach_args *oba = aux; 135 136 aprint_normal(" addr 0x%08lx", oba->oba_addr); 137 if (oba->oba_size != OBIOCF_SIZE_DEFAULT) 138 aprint_normal("-0x%08lx", oba->oba_addr + (oba->oba_size - 1)); 139 if (oba->oba_width != OBIOCF_WIDTH_DEFAULT) 140 aprint_normal(" width %d", oba->oba_width); 141 if (oba->oba_irq != -1) 142 aprint_normal(" xint3 %d", IRQ_XINT3(oba->oba_irq)); 143 144 return (UNCONF); 145 } 146 147 int 148 obio_search(struct device *parent, struct cfdata *cf, 149 const locdesc_t *ldesc, void *aux) 150 { 151 struct obio_attach_args oba; 152 153 oba.oba_st = &obio_bs_tag; 154 oba.oba_addr = cf->cf_loc[OBIOCF_ADDR]; 155 oba.oba_size = cf->cf_loc[OBIOCF_SIZE]; 156 oba.oba_width = cf->cf_loc[OBIOCF_WIDTH]; 157 if (cf->cf_loc[OBIOCF_XINT3] != OBIOCF_XINT3_DEFAULT) 158 oba.oba_irq = XINT3_IRQ(cf->cf_loc[OBIOCF_XINT3]); 159 else 160 oba.oba_irq = -1; 161 162 if (config_match(parent, cf, &oba) > 0) 163 config_attach(parent, cf, &oba, obio_print); 164 165 return (0); 166 } 167
Indexes created Tue Sep 30 20:09:53 GMT 2025