1 /* $NetBSD: imx51_axi.c,v 1.4 2014/03/10 04:25:51 htodd Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 SHIMIZU Ryo <ryo@nerv.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: imx51_axi.c,v 1.4 2014/03/10 04:25:51 htodd Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/device.h> 35 36 #include <uvm/uvm_extern.h> 37 38 #include <arm/imx/imx51reg.h> 39 #include <arm/imx/imx51var.h> 40 41 #include "bus_dma_generic.h" 42 #include "locators.h" 43 44 struct axi_softc { 45 device_t sc_dev; 46 bus_space_tag_t sc_iot; 47 bus_dma_tag_t sc_dmat; 48 }; 49 50 static int axi_match(device_t, struct cfdata *, void *); 51 static void axi_attach(device_t, device_t, void *); 52 static int axi_search(device_t, struct cfdata *, const int *, void *); 53 static int axi_critical_search(device_t, struct cfdata *, const int *, void *); 54 static int axi_search(device_t, struct cfdata *, const int *, void *); 55 static int axi_print(void *, const char *); 56 57 CFATTACH_DECL_NEW(axi, sizeof(struct axi_softc), 58 axi_match, axi_attach, NULL, NULL); 59 60 /* ARGSUSED */ 61 static int 62 axi_match(device_t parent __unused, struct cfdata *match __unused, 63 void *aux __unused) 64 { 65 return 1; 66 } 67 68 /* ARGSUSED */ 69 static void 70 axi_attach(device_t parent __unused, device_t self, void *aux __unused) 71 { 72 struct axi_softc *sc; 73 struct axi_attach_args aa; 74 75 aprint_normal(": Advanced eXtensible Interface\n"); 76 aprint_naive("\n"); 77 78 sc = device_private(self); 79 sc->sc_iot = &imx_bs_tag; 80 #if NBUS_DMA_GENERIC > 0 81 sc->sc_dmat = &imx_bus_dma_tag; 82 #else 83 sc->sc_dmat = 0; 84 #endif 85 86 aa.aa_name = "axi"; 87 aa.aa_iot = sc->sc_iot; 88 aa.aa_dmat = sc->sc_dmat; 89 config_search_ia(axi_critical_search, self, "axi", &aa); 90 config_search_ia(axi_search, self, "axi", &aa); 91 } 92 93 /* ARGSUSED */ 94 static int 95 axi_critical_search(device_t parent, struct cfdata *cf, 96 const int *ldesc __unused, void *aux) 97 { 98 struct axi_attach_args *aa; 99 100 aa = aux; 101 102 if ((strcmp(cf->cf_name, "tzic") != 0) && 103 (strcmp(cf->cf_name, "imxuart") != 0) && 104 (strcmp(cf->cf_name, "imxccm") != 0) && 105 (strcmp(cf->cf_name, "imxgpio") != 0)) 106 return 0; 107 108 aa->aa_name = cf->cf_name; 109 aa->aa_addr = cf->cf_loc[AXICF_ADDR]; 110 aa->aa_size = cf->cf_loc[AXICF_SIZE]; 111 aa->aa_irq = cf->cf_loc[AXICF_IRQ]; 112 aa->aa_irqbase = cf->cf_loc[AXICF_IRQBASE]; 113 114 if (config_match(parent, cf, aux) > 0) 115 config_attach(parent, cf, aux, axi_print); 116 117 return 0; 118 } 119 120 121 /* ARGSUSED */ 122 static int 123 axi_search(device_t parent, struct cfdata *cf, const int *ldesc __unused, 124 void *aux) 125 { 126 struct axi_attach_args *aa; 127 128 aa = aux; 129 130 aa->aa_addr = cf->cf_loc[AXICF_ADDR]; 131 aa->aa_size = cf->cf_loc[AXICF_SIZE]; 132 aa->aa_irq = cf->cf_loc[AXICF_IRQ]; 133 aa->aa_irqbase = cf->cf_loc[AXICF_IRQBASE]; 134 135 if (config_match(parent, cf, aux) > 0) 136 config_attach(parent, cf, aux, axi_print); 137 138 return 0; 139 } 140 141 /* ARGSUSED */ 142 static int 143 axi_print(void *aux, const char *name __unused) 144 { 145 struct axi_attach_args *aa = (struct axi_attach_args *)aux; 146 147 if (aa->aa_addr != AXICF_ADDR_DEFAULT) { 148 aprint_normal(" addr 0x%lx", aa->aa_addr); 149 if (aa->aa_size > AXICF_SIZE_DEFAULT) 150 aprint_normal("-0x%lx", 151 aa->aa_addr + aa->aa_size-1); 152 } 153 if (aa->aa_irq != AXICF_IRQ_DEFAULT) 154 aprint_normal(" intr %d", aa->aa_irq); 155 if (aa->aa_irqbase != AXICF_IRQBASE_DEFAULT) 156 aprint_normal(" irqbase %d", aa->aa_irqbase); 157 158 return (UNCONF); 159 } 160