1 /* $NetBSD: mediabay.c,v 1.4 2001/07/22 11:29:46 wiz 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/param.h> 30 #include <sys/device.h> 31 #include <sys/kernel.h> 32 #include <sys/kthread.h> 33 #include <sys/systm.h> 34 35 #include <dev/ofw/openfirm.h> 36 37 #include <machine/autoconf.h> 38 #include <machine/pio.h> 39 40 struct mediabay_softc { 41 struct device sc_dev; 42 int sc_node; 43 u_int *sc_addr; 44 u_int *sc_fcr; 45 u_int sc_baseaddr; 46 struct device *sc_content; 47 struct proc *sc_kthread; 48 }; 49 50 void mediabay_attach __P((struct device *, struct device *, void *)); 51 int mediabay_match __P((struct device *, struct cfdata *, void *)); 52 int mediabay_print __P((void *, const char *)); 53 void mediabay_attach_content __P((struct mediabay_softc *)); 54 int mediabay_intr __P((void *)); 55 void mediabay_create_kthread __P((void *)); 56 void mediabay_kthread __P((void *)); 57 58 struct cfattach mediabay_ca = { 59 sizeof(struct mediabay_softc), mediabay_match, mediabay_attach 60 }; 61 62 #ifdef MEDIABAY_DEBUG 63 # define DPRINTF printf 64 #else 65 # define DPRINTF while (0) printf 66 #endif 67 68 #define FCR_MEDIABAY_RESET 0x00000002 69 #define FCR_MEDIABAY_IDE_ENABLE 0x00000008 70 #define FCR_MEDIABAY_FD_ENABLE 0x00000010 71 #define FCR_MEDIABAY_ENABLE 0x00000080 72 #define FCR_MEDIABAY_CD_POWER 0x00800000 73 74 #define MEDIABAY_ID(x) (((x) >> 12) & 0xf) 75 #define MEDIABAY_ID_FD 0 76 #define MEDIABAY_ID_CD 3 77 #define MEDIABAY_ID_NONE 7 78 79 int 80 mediabay_match(parent, cf, aux) 81 struct device *parent; 82 struct cfdata *cf; 83 void *aux; 84 { 85 struct confargs *ca = aux; 86 87 if (strcmp(ca->ca_name, "media-bay") == 0) 88 return 1; 89 90 return 0; 91 } 92 93 /* 94 * Attach all the sub-devices we can find 95 */ 96 void 97 mediabay_attach(parent, self, aux) 98 struct device *parent, *self; 99 void *aux; 100 { 101 struct mediabay_softc *sc = (struct mediabay_softc *)self; 102 struct confargs *ca = aux; 103 int irq, type; 104 105 ca->ca_reg[0] += ca->ca_baseaddr; 106 107 sc->sc_addr = mapiodev(ca->ca_reg[0], NBPG); 108 sc->sc_fcr = sc->sc_addr + 1; 109 sc->sc_node = ca->ca_node; 110 sc->sc_baseaddr = ca->ca_baseaddr; 111 irq = ca->ca_intr[0]; 112 type = IST_LEVEL; 113 114 if (ca->ca_nintr == 8 && ca->ca_intr[1] == 0) 115 type = IST_EDGE; 116 117 printf(" irq %d %s\n", irq, intr_typename(type)); 118 intr_establish(irq, type, IPL_BIO, mediabay_intr, sc); 119 120 kthread_create(mediabay_create_kthread, sc); 121 122 sc->sc_content = NULL; 123 124 if (MEDIABAY_ID(in32rb(sc->sc_addr)) != MEDIABAY_ID_NONE) 125 mediabay_attach_content(sc); 126 } 127 128 void 129 mediabay_attach_content(sc) 130 struct mediabay_softc *sc; 131 { 132 int child; 133 u_int fcr; 134 struct device *content; 135 struct confargs ca; 136 u_int reg[20], intr[5]; 137 char name[32]; 138 139 fcr = in32rb(sc->sc_fcr); 140 fcr |= FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_RESET; 141 out32rb(sc->sc_fcr, fcr); 142 delay(50000); 143 144 fcr &= ~FCR_MEDIABAY_RESET; 145 out32rb(sc->sc_fcr, fcr); 146 delay(50000); 147 148 fcr |= FCR_MEDIABAY_IDE_ENABLE | FCR_MEDIABAY_CD_POWER; 149 out32rb(sc->sc_fcr, fcr); 150 delay(50000); 151 152 for (child = OF_child(sc->sc_node); child; child = OF_peer(child)) { 153 memset(name, 0, sizeof(name)); 154 if (OF_getprop(child, "name", name, sizeof(name)) == -1) 155 continue; 156 ca.ca_name = name; 157 ca.ca_node = child; 158 ca.ca_baseaddr = sc->sc_baseaddr; 159 160 ca.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg)); 161 ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr, 162 sizeof(intr)); 163 if (ca.ca_nintr == -1) 164 ca.ca_nintr = OF_getprop(child, "interrupts", intr, 165 sizeof(intr)); 166 ca.ca_reg = reg; 167 ca.ca_intr = intr; 168 169 content = config_found(&sc->sc_dev, &ca, mediabay_print); 170 if (content) { 171 sc->sc_content = content; 172 return; 173 } 174 } 175 176 /* No devices found. Disable media-bay. */ 177 fcr &= ~(FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_IDE_ENABLE | 178 FCR_MEDIABAY_CD_POWER | FCR_MEDIABAY_FD_ENABLE); 179 out32rb(sc->sc_fcr, fcr); 180 } 181 182 int 183 mediabay_print(aux, mediabay) 184 void *aux; 185 const char *mediabay; 186 { 187 struct confargs *ca = aux; 188 189 if (mediabay == NULL && ca->ca_nreg > 0) 190 printf(" offset 0x%x", ca->ca_reg[0]); 191 192 return QUIET; 193 } 194 195 int 196 mediabay_intr(v) 197 void *v; 198 { 199 struct mediabay_softc *sc = v; 200 201 wakeup(&sc->sc_kthread); 202 return 1; 203 } 204 205 void 206 mediabay_create_kthread(v) 207 void *v; 208 { 209 struct mediabay_softc *sc = v; 210 211 kthread_create1(mediabay_kthread, sc, &sc->sc_kthread, "media-bay"); 212 } 213 214 void 215 mediabay_kthread(v) 216 void *v; 217 { 218 struct mediabay_softc *sc = v; 219 u_int x, fcr; 220 221 sleep: 222 tsleep(&sc->sc_kthread, PRIBIO, "mbayev", 0); 223 224 /* sleep 0.25 sec */ 225 tsleep(mediabay_kthread, PRIBIO, "mbayev", hz/4); 226 227 DPRINTF("%s: ", sc->sc_dev.dv_xname); 228 x = in32rb(sc->sc_addr); 229 230 switch (MEDIABAY_ID(x)) { 231 case MEDIABAY_ID_NONE: 232 DPRINTF("removed\n"); 233 if (sc->sc_content != NULL) { 234 config_detach(sc->sc_content, DETACH_FORCE); 235 DPRINTF("%s: detach done\n", sc->sc_dev.dv_xname); 236 sc->sc_content = NULL; 237 238 /* disable media-bay */ 239 fcr = in32rb(sc->sc_fcr); 240 fcr &= ~(FCR_MEDIABAY_ENABLE | 241 FCR_MEDIABAY_IDE_ENABLE | 242 FCR_MEDIABAY_CD_POWER | 243 FCR_MEDIABAY_FD_ENABLE); 244 out32rb(sc->sc_fcr, fcr); 245 } 246 break; 247 case MEDIABAY_ID_FD: 248 DPRINTF("FD inserted\n"); 249 break; 250 case MEDIABAY_ID_CD: 251 DPRINTF("CD inserted\n"); 252 253 if (sc->sc_content == NULL) 254 mediabay_attach_content(sc); 255 break; 256 default: 257 printf("unknown event (0x%x)\n", x); 258 } 259 260 goto sleep; 261 } 262 263 /* PBG3: 0x7025X0c0 */ 264 /* 2400: 0x0070X0a8 */ 265