1 /* $Id: imx23_ahb.c,v 1.1 2013/10/07 17:36:40 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Petri Laakso. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/device.h> 35 #include <sys/errno.h> 36 37 #include <arm/mainbus/mainbus.h> 38 39 #include <arm/imx/imx23var.h> 40 41 #include "locators.h" 42 43 static int ahb_match(device_t, cfdata_t, void *); 44 static void ahb_attach(device_t, device_t, void *); 45 static int ahb_detach(device_t, int); 46 static int ahb_activate(device_t, enum devact); 47 48 static int ahb_search_cb(device_t, cfdata_t, const int *, void *); 49 static int ahb_print(void *,const char *); 50 51 CFATTACH_DECL3_NEW(ahb, 52 sizeof(struct ahb_softc), 53 ahb_match, 54 ahb_attach, 55 ahb_detach, 56 ahb_activate, 57 NULL, 58 NULL, 59 0); 60 61 static int 62 ahb_match(device_t parent, cfdata_t match, void *aux) 63 { 64 struct mainbus_attach_args *mb = aux; 65 66 if ((mb->mb_iobase == AHB_BASE) && (mb->mb_iosize == AHB_SIZE)) 67 return 1; 68 69 return 0; 70 } 71 72 static void 73 ahb_attach(device_t parent, device_t self, void *aux) 74 { 75 struct ahb_attach_args aa; 76 static int ahb_attached = 0; 77 78 if (ahb_attached) 79 return; 80 81 aa.aa_iot = &imx23_bus_space; 82 aa.aa_dmat = &imx23_bus_dma_tag; 83 84 aprint_normal("\n"); 85 86 config_search_ia(ahb_search_cb, self, "ahb", &aa); 87 88 ahb_attached = 1; 89 90 return; 91 } 92 93 static int 94 ahb_detach(device_t self, int flags) 95 { 96 return 0; 97 } 98 99 static int 100 ahb_activate(device_t self, enum devact act) 101 { 102 return EOPNOTSUPP; 103 } 104 105 /* 106 * config_search_ia() callback function. 107 */ 108 static int 109 ahb_search_cb(device_t parent, cfdata_t cf, const int *locs, void *aux) 110 { 111 struct apb_attach_args *aa = aux; 112 113 aa->aa_name = cf->cf_name; 114 aa->aa_addr = cf->cf_loc[AHBCF_ADDR]; 115 aa->aa_size = cf->cf_loc[AHBCF_SIZE]; 116 aa->aa_irq = cf->cf_loc[AHBCF_IRQ]; 117 118 if (config_match(parent, cf, aux) > 0) 119 config_attach(parent, cf, aux, ahb_print); 120 121 return 0; 122 } 123 124 /* 125 * Called from config_attach() 126 */ 127 static int 128 ahb_print(void *aux, const char *name __unused) 129 { 130 struct apb_attach_args *aa = aux; 131 132 if (aa->aa_addr != AHBCF_ADDR_DEFAULT) { 133 aprint_normal(" addr 0x%lx", aa->aa_addr); 134 if (aa->aa_size > AHBCF_SIZE_DEFAULT) 135 aprint_normal("-0x%lx", aa->aa_addr + aa->aa_size-1); 136 } 137 138 if (aa->aa_irq != AHBCF_IRQ_DEFAULT) 139 aprint_normal(" irq %d", aa->aa_irq); 140 141 return UNCONF; 142 } 143