imx23_apbh.c revision 1.1.2.2
1 1.1.2.2 yamt /* $Id: imx23_apbh.c,v 1.1.2.2 2013/01/16 05:32:47 yamt Exp $ */ 2 1.1.2.2 yamt 3 1.1.2.2 yamt /* 4 1.1.2.2 yamt * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 1.1.2.2 yamt * All rights reserved. 6 1.1.2.2 yamt * 7 1.1.2.2 yamt * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 yamt * by Petri Laakso. 9 1.1.2.2 yamt * 10 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 yamt * modification, are permitted provided that the following conditions 12 1.1.2.2 yamt * are met: 13 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 18 1.1.2.2 yamt * 19 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.2.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 30 1.1.2.2 yamt */ 31 1.1.2.2 yamt 32 1.1.2.2 yamt #include <sys/param.h> 33 1.1.2.2 yamt #include <sys/bus.h> 34 1.1.2.2 yamt #include <sys/device.h> 35 1.1.2.2 yamt #include <sys/errno.h> 36 1.1.2.2 yamt 37 1.1.2.2 yamt #include <arm/mainbus/mainbus.h> 38 1.1.2.2 yamt 39 1.1.2.2 yamt #include <arm/imx/imx23var.h> 40 1.1.2.2 yamt 41 1.1.2.2 yamt #include "locators.h" 42 1.1.2.2 yamt 43 1.1.2.2 yamt static int apbh_match(device_t, cfdata_t, void *); 44 1.1.2.2 yamt static void apbh_attach(device_t, device_t, void *); 45 1.1.2.2 yamt static int apbh_detach(device_t, int); 46 1.1.2.2 yamt static int apbh_activate(device_t, enum devact); 47 1.1.2.2 yamt 48 1.1.2.2 yamt static int apbh_search_cb(device_t, cfdata_t, const int *, void *); 49 1.1.2.2 yamt static int apbh_search_crit_cb(device_t, cfdata_t, const int *, void *); 50 1.1.2.2 yamt static int apbh_print(void *,const char *); 51 1.1.2.2 yamt 52 1.1.2.2 yamt struct apbh_softc { 53 1.1.2.2 yamt device_t sc_dev; 54 1.1.2.2 yamt device_t dmac; /* DMA controller device for this bus. */ 55 1.1.2.2 yamt }; 56 1.1.2.2 yamt 57 1.1.2.2 yamt CFATTACH_DECL3_NEW(apbh, 58 1.1.2.2 yamt sizeof(struct apbh_softc), 59 1.1.2.2 yamt apbh_match, 60 1.1.2.2 yamt apbh_attach, 61 1.1.2.2 yamt apbh_detach, 62 1.1.2.2 yamt apbh_activate, 63 1.1.2.2 yamt NULL, 64 1.1.2.2 yamt NULL, 65 1.1.2.2 yamt 0); 66 1.1.2.2 yamt 67 1.1.2.2 yamt static int 68 1.1.2.2 yamt apbh_match(device_t parent, cfdata_t match, void *aux) 69 1.1.2.2 yamt { 70 1.1.2.2 yamt struct mainbus_attach_args *mb = aux; 71 1.1.2.2 yamt 72 1.1.2.2 yamt if ((mb->mb_iobase == APBH_BASE) && (mb->mb_iosize == APBH_SIZE)) 73 1.1.2.2 yamt return 1; 74 1.1.2.2 yamt 75 1.1.2.2 yamt return 0; 76 1.1.2.2 yamt } 77 1.1.2.2 yamt 78 1.1.2.2 yamt static void 79 1.1.2.2 yamt apbh_attach(device_t parent, device_t self, void *aux) 80 1.1.2.2 yamt { 81 1.1.2.2 yamt struct apb_attach_args aa; 82 1.1.2.2 yamt static int apbh_attached = 0; 83 1.1.2.2 yamt 84 1.1.2.2 yamt if (apbh_attached) 85 1.1.2.2 yamt return; 86 1.1.2.2 yamt 87 1.1.2.2 yamt aa.aa_iot = &imx23_bus_space; 88 1.1.2.2 yamt aa.aa_dmat = &imx23_bus_dma_tag; 89 1.1.2.2 yamt 90 1.1.2.2 yamt aprint_normal("\n"); 91 1.1.2.2 yamt 92 1.1.2.2 yamt config_search_ia(apbh_search_crit_cb, self, "apbh", &aa); 93 1.1.2.2 yamt config_search_ia(apbh_search_cb, self, "apbh", &aa); 94 1.1.2.2 yamt 95 1.1.2.2 yamt apbh_attached = 1; 96 1.1.2.2 yamt 97 1.1.2.2 yamt return; 98 1.1.2.2 yamt } 99 1.1.2.2 yamt 100 1.1.2.2 yamt static int 101 1.1.2.2 yamt apbh_detach(device_t self, int flags) 102 1.1.2.2 yamt { 103 1.1.2.2 yamt return 0; 104 1.1.2.2 yamt } 105 1.1.2.2 yamt 106 1.1.2.2 yamt static int 107 1.1.2.2 yamt apbh_activate(device_t self, enum devact act) 108 1.1.2.2 yamt { 109 1.1.2.2 yamt return EOPNOTSUPP; 110 1.1.2.2 yamt } 111 1.1.2.2 yamt 112 1.1.2.2 yamt /* 113 1.1.2.2 yamt * config_search_ia() callback function. 114 1.1.2.2 yamt */ 115 1.1.2.2 yamt static int 116 1.1.2.2 yamt apbh_search_cb(device_t parent, cfdata_t cf, const int *locs, void *aux) 117 1.1.2.2 yamt { 118 1.1.2.2 yamt struct apb_attach_args *aa = aux; 119 1.1.2.2 yamt 120 1.1.2.2 yamt aa->aa_name = cf->cf_name; 121 1.1.2.2 yamt aa->aa_addr = cf->cf_loc[APBHCF_ADDR]; 122 1.1.2.2 yamt aa->aa_size = cf->cf_loc[APBHCF_SIZE]; 123 1.1.2.2 yamt aa->aa_irq = cf->cf_loc[APBHCF_IRQ]; 124 1.1.2.2 yamt 125 1.1.2.2 yamt if (config_match(parent, cf, aux) > 0) 126 1.1.2.2 yamt config_attach(parent, cf, aux, apbh_print); 127 1.1.2.2 yamt 128 1.1.2.2 yamt return 0; 129 1.1.2.2 yamt } 130 1.1.2.2 yamt 131 1.1.2.2 yamt /* 132 1.1.2.2 yamt * config_search_ia() callback function which only applies to critical devices. 133 1.1.2.2 yamt */ 134 1.1.2.2 yamt static int 135 1.1.2.2 yamt apbh_search_crit_cb(device_t parent, cfdata_t cf, const int *locs, void *aux) 136 1.1.2.2 yamt { 137 1.1.2.2 yamt struct apb_attach_args *aa = aux; 138 1.1.2.2 yamt 139 1.1.2.2 yamt /* Return if not critical device. */ 140 1.1.2.2 yamt if ((strcmp(cf->cf_name, "icoll") != 0) 141 1.1.2.2 yamt && (strcmp(cf->cf_name, "apbdma") != 0)) 142 1.1.2.2 yamt return 0; 143 1.1.2.2 yamt 144 1.1.2.2 yamt aa->aa_name = cf->cf_name; 145 1.1.2.2 yamt aa->aa_addr = cf->cf_loc[APBHCF_ADDR]; 146 1.1.2.2 yamt aa->aa_size = cf->cf_loc[APBHCF_SIZE]; 147 1.1.2.2 yamt aa->aa_irq = cf->cf_loc[APBHCF_IRQ]; 148 1.1.2.2 yamt 149 1.1.2.2 yamt if (config_match(parent, cf, aux) > 0) 150 1.1.2.2 yamt config_attach(parent, cf, aux, apbh_print); 151 1.1.2.2 yamt 152 1.1.2.2 yamt return 0; 153 1.1.2.2 yamt } 154 1.1.2.2 yamt 155 1.1.2.2 yamt /* 156 1.1.2.2 yamt * Called from config_attach() 157 1.1.2.2 yamt */ 158 1.1.2.2 yamt static int 159 1.1.2.2 yamt apbh_print(void *aux, const char *name __unused) 160 1.1.2.2 yamt { 161 1.1.2.2 yamt struct apb_attach_args *aa = aux; 162 1.1.2.2 yamt 163 1.1.2.2 yamt if (aa->aa_addr != APBHCF_ADDR_DEFAULT) { 164 1.1.2.2 yamt aprint_normal(" addr 0x%lx", aa->aa_addr); 165 1.1.2.2 yamt if (aa->aa_size > APBHCF_SIZE_DEFAULT) 166 1.1.2.2 yamt aprint_normal("-0x%lx", aa->aa_addr + aa->aa_size-1); 167 1.1.2.2 yamt } 168 1.1.2.2 yamt 169 1.1.2.2 yamt if (aa->aa_irq != APBHCF_IRQ_DEFAULT) 170 1.1.2.2 yamt aprint_normal(" irq %d", aa->aa_irq); 171 1.1.2.2 yamt 172 1.1.2.2 yamt return UNCONF; 173 1.1.2.2 yamt } 174
Indexes created Thu Oct 02 01:09:59 GMT 2025