imx31_ahb.c revision 1.1.2.2
1 /* $Id: imx31_ahb.c,v 1.1.2.2 2007/09/11 16:39:20 matt Exp $ */ 2 3 /* derived from: */ 4 /* $NetBSD: imx31_ahb.c,v 1.1.2.2 2007/09/11 16:39:20 matt Exp $ */ 5 6 /* 7 * Copyright (c) 2002, 2005 Genetec Corporation. All rights reserved. 8 * Written by Hiroyuki Bessho for Genetec Corporation. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed for the NetBSD Project by 21 * Genetec Corporation. 22 * 4. The name of Genetec Corporation may not be used to endorse or 23 * promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 * 38 * 39 * Autoconfiguration support for the Intel PXA2[15]0 application 40 * processor. This code is derived from arm/sa11x0/sa11x0.c 41 */ 42 43 /*- 44 * Copyright (c) 2001, The NetBSD Foundation, Inc. All rights reserved. 45 * 46 * This code is derived from software contributed to The NetBSD Foundation 47 * by IWAMOTO Toshihiro and Ichiro FUKUHARA. 48 * 49 * Redistribution and use in source and binary forms, with or without 50 * modification, are permitted provided that the following conditions 51 * are met: 52 * 1. Redistributions of source code must retain the above copyright 53 * notice, this list of conditions and the following disclaimer. 54 * 2. Redistributions in binary form must reproduce the above copyright 55 * notice, this list of conditions and the following disclaimer in the 56 * documentation and/or other materials provided with the distribution. 57 * 3. All advertising materials mentioning features or use of this software 58 * must display the following acknowledgement: 59 * This product includes software developed by the NetBSD 60 * Foundation, Inc. and its contributors. 61 * 4. Neither the name of The NetBSD Foundation nor the names of its 62 * contributors may be used to endorse or promote products derived 63 * from this software without specific prior written permission. 64 */ 65 /*- 66 * Copyright (c) 1999 67 * Shin Takemura and PocketBSD Project. All rights reserved. 68 * 69 * Redistribution and use in source and binary forms, with or without 70 * modification, are permitted provided that the following conditions 71 * are met: 72 * 1. Redistributions of source code must retain the above copyright 73 * notice, this list of conditions and the following disclaimer. 74 * 2. Redistributions in binary form must reproduce the above copyright 75 * notice, this list of conditions and the following disclaimer in the 76 * documentation and/or other materials provided with the distribution. 77 * 3. All advertising materials mentioning features or use of this software 78 * must display the following acknowledgement: 79 * This product includes software developed by the PocketBSD project 80 * and its contributors. 81 * 4. Neither the name of the project nor the names of its contributors 82 * may be used to endorse or promote products derived from this software 83 * without specific prior written permission. 84 * 85 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 86 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 87 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 88 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 89 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 90 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 91 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 92 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 93 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 94 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 95 * SUCH DAMAGE. 96 * 97 */ 98 99 #include <sys/cdefs.h> 100 __KERNEL_RCSID(0, "$Id: imx31_ahb.c,v 1.1.2.2 2007/09/11 16:39:20 matt Exp $"); 101 102 #include "locators.h" 103 #include "avic.h" 104 #include "imxgpio.h" 105 106 #include <sys/param.h> 107 #include <sys/systm.h> 108 #include <sys/device.h> 109 #include <sys/kernel.h> 110 #include <sys/reboot.h> 111 112 #include <machine/cpu.h> 113 #include <machine/bus.h> 114 115 #include <arm/cpufunc.h> 116 #include <arm/mainbus/mainbus.h> 117 118 #include <machine/intr.h> 119 120 #include <arm/imx/imx31reg.h> 121 #include <arm/imx/imx31var.h> 122 123 struct ahb_softc { 124 struct device sc_dev; 125 bus_dma_tag_t sc_dmat; 126 bus_space_tag_t sc_memt; 127 bus_space_handle_t sc_memh; 128 }; 129 130 /* prototypes */ 131 static int ahb_match(device_t, cfdata_t, void *); 132 static void ahb_attach(device_t, device_t, void *); 133 static int ahb_search(device_t, cfdata_t, const int *, void *); 134 static void ahb_attach_critical(struct ahb_softc *); 135 static int ahbbus_print(void *, const char *); 136 137 /* attach structures */ 138 CFATTACH_DECL(ahb, sizeof(struct ahb_softc), 139 ahb_match, ahb_attach, NULL, NULL); 140 141 static struct ahb_softc *ahb_sc; 142 143 static int 144 ahb_match(device_t parent, cfdata_t match, void *aux) 145 { 146 return 1; 147 } 148 149 static void 150 ahb_attach(device_t parent, device_t self, void *aux) 151 { 152 struct ahb_softc *sc = (struct ahb_softc *)self; 153 extern struct bus_space imx31_bs_tag; 154 struct ahb_attach_args ahba; 155 156 ahb_sc = sc; 157 sc->sc_memt = &imx31_bs_tag; 158 #if NBUS_DMA_GENERIC > 0 159 sc->sc_dmat = &imx31_bus_dma_tag; 160 #else 161 sc->sc_dmat = 0; 162 #endif 163 164 aprint_normal(": AHB-Lite 2.v6 bus interface\n"); 165 166 /* 167 * Attach critical devices 168 */ 169 ahb_attach_critical(sc); 170 171 /* 172 * Attach all other devices 173 */ 174 ahba.ahba_name = "ahb"; 175 ahba.ahba_memt = sc->sc_memt; 176 ahba.ahba_dmat = sc->sc_dmat; 177 config_search_ia(ahb_search, self, "ahb", &ahba); 178 } 179 180 static int 181 ahb_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 182 { 183 struct ahb_attach_args * const ahba = aux; 184 185 ahba->ahba_addr = cf->cf_loc[AHBCF_ADDR]; 186 ahba->ahba_size = cf->cf_loc[AHBCF_SIZE]; 187 ahba->ahba_intr = cf->cf_loc[AHBCF_INTR]; 188 ahba->ahba_irqbase = cf->cf_loc[AHBCF_IRQBASE]; 189 190 if (config_match(parent, cf, ahba)) 191 config_attach(parent, cf, ahba, ahbbus_print); 192 193 return 0; 194 } 195 196 static void 197 ahb_attach_critical(struct ahb_softc *sc) 198 { 199 struct ahb_attach_args ahba; 200 201 ahba.ahba_name = "ahb"; 202 ahba.ahba_memt = sc->sc_memt; 203 ahba.ahba_dmat = sc->sc_dmat; 204 205 #if NAVIC == 0 206 #error no avic present in config file 207 #endif 208 ahba.ahba_addr = INTC_BASE; 209 ahba.ahba_size = INTC_SIZE; 210 ahba.ahba_intr = AHBCF_INTR_DEFAULT; 211 ahba.ahba_irqbase = AHBCF_IRQBASE_DEFAULT; 212 if (config_found(&sc->sc_dev, &ahba, ahbbus_print) == NULL) 213 panic("ahb_attach_critical: failed to attach INTC!"); 214 215 #if NIMXGPIO == 0 216 #error no imxgpio present in config file 217 #endif 218 #if NIMXGPIO > 0 219 ahba.ahba_addr = GPIO1_BASE; 220 ahba.ahba_size = GPIO_SIZE; 221 ahba.ahba_intr = IRQ_GPIO1; 222 ahba.ahba_irqbase = AHBCF_IRQBASE_DEFAULT; 223 if (config_found(&sc->sc_dev, &ahba, ahbbus_print) == NULL) 224 panic("ahb_attach_critical: failed to attach GPIO0!"); 225 #endif 226 227 #if NIMXDMAC > 0 228 ahba.ahba_addr = IMX31_DMAC_BASE; 229 ahba.ahba_size = IMX31_DMAC_SIZE; 230 ahba.ahba_intr = IMX31_INT_DMA; 231 ahba.ahba_irqbase = AHBCF_IRQBASE_DEFAULT; 232 if (config_found(&sc->sc_dev, &ahba, ahbbus_print) == NULL) 233 panic("ahb_attach_critical: failed to attach DMAC!"); 234 #endif 235 } 236 237 static int 238 ahbbus_print(void *aux, const char *name) 239 { 240 struct ahb_attach_args *ahba = (struct ahb_attach_args*)aux; 241 242 if (ahba->ahba_addr != AHBCF_ADDR_DEFAULT) { 243 aprint_normal(" addr 0x%lx", ahba->ahba_addr); 244 if (ahba->ahba_size > AHBCF_SIZE_DEFAULT) 245 aprint_normal("-0x%lx", 246 ahba->ahba_addr + ahba->ahba_size-1); 247 } 248 if (ahba->ahba_intr != AHBCF_INTR_DEFAULT) 249 aprint_normal(" intr %d", ahba->ahba_intr); 250 if (ahba->ahba_intr != AHBCF_IRQBASE_DEFAULT) 251 aprint_normal(" irqbase %d", ahba->ahba_irqbase); 252 253 return (UNCONF); 254 } 255 256 static inline uint32_t 257 read_clock_counter_xsc1(void) 258 { 259 uint32_t x; 260 __asm volatile("mrc p14, 0, %0, c1, c0, 0" : "=r" (x) ); 261 262 return x; 263 } 264 265 static inline uint32_t 266 read_clock_counter_xsc2(void) 267 { 268 uint32_t x; 269 __asm volatile("mrc p14, 0, %0, c1, c1, 0" : "=r" (x) ); 270 271 return x; 272 } 273 274
Indexes created Fri Oct 03 02:09:57 GMT 2025