mediabay.c revision 1.12
1 /* $NetBSD: mediabay.c,v 1.12 2006/12/10 02:41:30 macallan Exp $ */ 2 3 /*- 4 * Copyright (C) 1999 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: mediabay.c,v 1.12 2006/12/10 02:41:30 macallan Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/device.h> 34 #include <sys/kernel.h> 35 #include <sys/kthread.h> 36 #include <sys/systm.h> 37 38 #include <uvm/uvm_extern.h> 39 40 #include <dev/ofw/openfirm.h> 41 42 #include <machine/autoconf.h> 43 #include <machine/pio.h> 44 45 struct mediabay_softc { 46 struct device sc_dev; 47 int sc_node; 48 u_int *sc_addr; 49 u_int *sc_fcr; 50 u_int sc_baseaddr; 51 struct device *sc_content; 52 struct proc *sc_kthread; 53 }; 54 55 void mediabay_attach __P((struct device *, struct device *, void *)); 56 int mediabay_match __P((struct device *, struct cfdata *, void *)); 57 int mediabay_print __P((void *, const char *)); 58 void mediabay_attach_content __P((struct mediabay_softc *)); 59 int mediabay_intr __P((void *)); 60 void mediabay_create_kthread __P((void *)); 61 void mediabay_kthread __P((void *)); 62 63 CFATTACH_DECL(mediabay, sizeof(struct mediabay_softc), 64 mediabay_match, mediabay_attach, NULL, NULL); 65 66 #ifdef MEDIABAY_DEBUG 67 # define DPRINTF printf 68 #else 69 # define DPRINTF while (0) printf 70 #endif 71 72 #define FCR_MEDIABAY_RESET 0x00000002 73 #define FCR_MEDIABAY_IDE_ENABLE 0x00000008 74 #define FCR_MEDIABAY_FD_ENABLE 0x00000010 75 #define FCR_MEDIABAY_ENABLE 0x00000080 76 #define FCR_MEDIABAY_CD_POWER 0x00800000 77 78 #define MEDIABAY_ID(x) (((x) >> 12) & 0xf) 79 #define MEDIABAY_ID_FD 0 80 #define MEDIABAY_ID_CD 3 81 #define MEDIABAY_ID_NONE 7 82 83 int 84 mediabay_match(parent, cf, aux) 85 struct device *parent; 86 struct cfdata *cf; 87 void *aux; 88 { 89 struct confargs *ca = aux; 90 91 if (strcmp(ca->ca_name, "media-bay") == 0) 92 return 1; 93 94 return 0; 95 } 96 97 /* 98 * Attach all the sub-devices we can find 99 */ 100 void 101 mediabay_attach(parent, self, aux) 102 struct device *parent, *self; 103 void *aux; 104 { 105 struct mediabay_softc *sc = (struct mediabay_softc *)self; 106 struct confargs *ca = aux; 107 int irq, itype; 108 109 ca->ca_reg[0] += ca->ca_baseaddr; 110 111 sc->sc_addr = mapiodev(ca->ca_reg[0], PAGE_SIZE); 112 sc->sc_fcr = sc->sc_addr + 1; 113 sc->sc_node = ca->ca_node; 114 sc->sc_baseaddr = ca->ca_baseaddr; 115 irq = ca->ca_intr[0]; 116 itype = IST_LEVEL; 117 118 if (ca->ca_nintr == 8 && ca->ca_intr[1] == 0) 119 itype = IST_EDGE; 120 121 printf(" irq %d %s\n", irq, intr_typename(itype)); 122 123 intr_establish(irq, itype, IPL_BIO, mediabay_intr, sc); 124 125 kthread_create(mediabay_create_kthread, sc); 126 127 sc->sc_content = NULL; 128 129 if (MEDIABAY_ID(in32rb(sc->sc_addr)) != MEDIABAY_ID_NONE) 130 mediabay_attach_content(sc); 131 } 132 133 void 134 mediabay_attach_content(sc) 135 struct mediabay_softc *sc; 136 { 137 int child; 138 u_int fcr; 139 struct device *content; 140 struct confargs ca; 141 u_int reg[20], intr[5]; 142 char name[32]; 143 144 fcr = in32rb(sc->sc_fcr); 145 146 /* 147 * if the mediabay isn't powered up we need to wait a few seconds 148 * before probing devices 149 */ 150 if ((fcr & (FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_IDE_ENABLE 151 | FCR_MEDIABAY_CD_POWER)) != (FCR_MEDIABAY_ENABLE 152 | FCR_MEDIABAY_IDE_ENABLE | FCR_MEDIABAY_CD_POWER)) { 153 fcr |= FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_RESET; 154 out32rb(sc->sc_fcr, fcr); 155 delay(50000); 156 157 fcr &= ~FCR_MEDIABAY_RESET; 158 out32rb(sc->sc_fcr, fcr); 159 delay(50000); 160 161 fcr |= FCR_MEDIABAY_IDE_ENABLE | FCR_MEDIABAY_CD_POWER; 162 out32rb(sc->sc_fcr, fcr); 163 delay(50000); 164 printf("%s: powering up...\n", sc->sc_dev.dv_xname); 165 delay(2000000); 166 } 167 168 for (child = OF_child(sc->sc_node); child; child = OF_peer(child)) { 169 memset(name, 0, sizeof(name)); 170 if (OF_getprop(child, "name", name, sizeof(name)) == -1) 171 continue; 172 ca.ca_name = name; 173 ca.ca_node = child; 174 ca.ca_baseaddr = sc->sc_baseaddr; 175 176 ca.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg)); 177 ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr, 178 sizeof(intr)); 179 if (ca.ca_nintr == -1) 180 ca.ca_nintr = OF_getprop(child, "interrupts", intr, 181 sizeof(intr)); 182 ca.ca_reg = reg; 183 ca.ca_intr = intr; 184 185 content = config_found(&sc->sc_dev, &ca, mediabay_print); 186 if (content) { 187 sc->sc_content = content; 188 return; 189 } 190 } 191 192 /* No devices found. Disable media-bay. */ 193 fcr &= ~(FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_IDE_ENABLE | 194 FCR_MEDIABAY_CD_POWER | FCR_MEDIABAY_FD_ENABLE); 195 out32rb(sc->sc_fcr, fcr); 196 } 197 198 int 199 mediabay_print(aux, mediabay) 200 void *aux; 201 const char *mediabay; 202 { 203 struct confargs *ca = aux; 204 205 if (mediabay == NULL && ca->ca_nreg > 0) 206 aprint_normal(" offset 0x%x", ca->ca_reg[0]); 207 208 return QUIET; 209 } 210 211 int 212 mediabay_intr(v) 213 void *v; 214 { 215 struct mediabay_softc *sc = v; 216 217 wakeup(&sc->sc_kthread); 218 219 return 1; 220 } 221 222 void 223 mediabay_create_kthread(v) 224 void *v; 225 { 226 struct mediabay_softc *sc = v; 227 228 kthread_create1(mediabay_kthread, sc, &sc->sc_kthread, "media-bay"); 229 } 230 231 void 232 mediabay_kthread(v) 233 void *v; 234 { 235 struct mediabay_softc *sc = v; 236 u_int x, fcr; 237 238 for (;;) { 239 tsleep(&sc->sc_kthread, PRIBIO, "mbayev", 0); 240 241 /* sleep 0.25 sec */ 242 tsleep(mediabay_kthread, PRIBIO, "mbayev", hz/4); 243 244 DPRINTF("%s: ", sc->sc_dev.dv_xname); 245 x = in32rb(sc->sc_addr); 246 247 switch (MEDIABAY_ID(x)) { 248 case MEDIABAY_ID_NONE: 249 DPRINTF("removed\n"); 250 if (sc->sc_content != NULL) { 251 config_detach(sc->sc_content, DETACH_FORCE); 252 DPRINTF("%s: detach done\n", 253 sc->sc_dev.dv_xname); 254 sc->sc_content = NULL; 255 256 /* disable media-bay */ 257 fcr = in32rb(sc->sc_fcr); 258 fcr &= ~(FCR_MEDIABAY_ENABLE | 259 FCR_MEDIABAY_IDE_ENABLE | 260 FCR_MEDIABAY_CD_POWER | 261 FCR_MEDIABAY_FD_ENABLE); 262 out32rb(sc->sc_fcr, fcr); 263 } 264 break; 265 case MEDIABAY_ID_FD: 266 DPRINTF("FD inserted\n"); 267 break; 268 case MEDIABAY_ID_CD: 269 DPRINTF("CD inserted\n"); 270 271 if (sc->sc_content == NULL) 272 mediabay_attach_content(sc); 273 break; 274 default: 275 printf("unknown event (0x%x)\n", x); 276 } 277 } 278 } 279 280 /* PBG3: 0x7025X0c0 */ 281 /* 3400: 0x7070X080 */ 282 /* 2400: 0x0070X0a8 */ 283
Indexes created Mon Sep 29 21:09:56 GMT 2025