1 /* $OpenBSD: mediabay.c,v 1.3 2006/06/19 22:42:33 miod Exp $ */ 2 /* $NetBSD: mediabay.c,v 1.9 2003/07/15 02:43:29 lukem Exp $ */ 3 4 /*- 5 * Copyright (C) 1999 Tsubai Masanari. 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 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 bus_space_tag_t sc_iot; 52 bus_dma_tag_t sc_dmat; 53 struct device *sc_content; 54 struct proc *sc_kthread; 55 }; 56 57 void mediabay_attach(struct device *, struct device *, void *); 58 int mediabay_match(struct device *, void *, void *); 59 int mediabay_print(void *, const char *); 60 void mediabay_attach_content(struct mediabay_softc *); 61 int mediabay_intr(void *); 62 void mediabay_create_kthread(void *); 63 void mediabay_kthread(void *); 64 65 struct cfattach mediabay_ca = { 66 sizeof(struct mediabay_softc), mediabay_match, mediabay_attach 67 }; 68 struct cfdriver mediabay_cd = { 69 NULL, "mediabay", DV_DULL 70 }; 71 72 73 #ifdef MEDIABAY_DEBUG 74 # define DPRINTF printf 75 #else 76 # define DPRINTF while (0) printf 77 #endif 78 79 #define FCR_MEDIABAY_RESET 0x00000002 80 #define FCR_MEDIABAY_IDE_ENABLE 0x00000008 81 #define FCR_MEDIABAY_FD_ENABLE 0x00000010 82 #define FCR_MEDIABAY_ENABLE 0x00000080 83 #define FCR_MEDIABAY_CD_POWER 0x00800000 84 85 #define MEDIABAY_ID(x) (((x) >> 12) & 0xf) 86 #define MEDIABAY_ID_FD 0 87 #define MEDIABAY_ID_CD 3 88 #define MEDIABAY_ID_NONE 7 89 90 int 91 mediabay_match(parent, v, aux) 92 struct device *parent; 93 void *v; 94 void *aux; 95 { 96 struct confargs *ca = aux; 97 98 if (strcmp(ca->ca_name, "media-bay") == 0 && 99 ca->ca_nintr >= 4 && ca->ca_nreg >= 8) 100 return 1; 101 102 return 0; 103 } 104 105 /* 106 * Attach all the sub-devices we can find 107 */ 108 void 109 mediabay_attach(parent, self, aux) 110 struct device *parent, *self; 111 void *aux; 112 { 113 struct mediabay_softc *sc = (struct mediabay_softc *)self; 114 struct confargs *ca = aux; 115 int irq, type; 116 117 ca->ca_reg[0] += ca->ca_baseaddr; 118 119 sc->sc_addr = mapiodev(ca->ca_reg[0], PAGE_SIZE); 120 sc->sc_fcr = sc->sc_addr + 1; 121 sc->sc_node = ca->ca_node; 122 sc->sc_baseaddr = ca->ca_baseaddr; 123 sc->sc_iot = ca->ca_iot; 124 sc->sc_dmat = ca->ca_dmat; 125 irq = ca->ca_intr[0]; 126 type = IST_LEVEL; 127 128 if (ca->ca_nintr == 8 && ca->ca_intr[1] == 0) 129 type = IST_EDGE; 130 131 printf(" irq %d\n", irq); 132 mac_intr_establish(parent, irq, type, IPL_BIO, mediabay_intr, sc, 133 "mediabay"); 134 135 kthread_create_deferred(mediabay_create_kthread, sc); 136 137 sc->sc_content = NULL; 138 139 if (MEDIABAY_ID(in32rb(sc->sc_addr)) != MEDIABAY_ID_NONE) 140 mediabay_attach_content(sc); 141 } 142 143 void 144 mediabay_attach_content(sc) 145 struct mediabay_softc *sc; 146 { 147 int child; 148 u_int fcr; 149 struct device *content; 150 struct confargs ca; 151 u_int reg[20], intr[5]; 152 char name[32]; 153 154 fcr = in32rb(sc->sc_fcr); 155 fcr |= FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_RESET; 156 out32rb(sc->sc_fcr, fcr); 157 delay(50000); 158 159 fcr &= ~FCR_MEDIABAY_RESET; 160 out32rb(sc->sc_fcr, fcr); 161 delay(50000); 162 163 fcr |= FCR_MEDIABAY_IDE_ENABLE | FCR_MEDIABAY_CD_POWER; 164 out32rb(sc->sc_fcr, fcr); 165 delay(50000); 166 167 for (child = OF_child(sc->sc_node); child; child = OF_peer(child)) { 168 memset(name, 0, sizeof(name)); 169 if (OF_getprop(child, "name", name, sizeof(name)) == -1) 170 continue; 171 ca.ca_name = name; 172 ca.ca_node = child; 173 ca.ca_baseaddr = sc->sc_baseaddr; 174 ca.ca_iot = sc->sc_iot; 175 ca.ca_dmat = sc->sc_dmat; 176 177 ca.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg)); 178 ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr, 179 sizeof(intr)); 180 if (ca.ca_nintr == -1) 181 ca.ca_nintr = OF_getprop(child, "interrupts", intr, 182 sizeof(intr)); 183 ca.ca_reg = reg; 184 ca.ca_intr = intr; 185 186 content = config_found(&sc->sc_dev, &ca, mediabay_print); 187 if (content) { 188 sc->sc_content = content; 189 return; 190 } 191 } 192 193 /* No devices found. Disable media-bay. */ 194 fcr &= ~(FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_IDE_ENABLE | 195 FCR_MEDIABAY_CD_POWER | FCR_MEDIABAY_FD_ENABLE); 196 out32rb(sc->sc_fcr, fcr); 197 } 198 199 int 200 mediabay_print(aux, mediabay) 201 void *aux; 202 const char *mediabay; 203 { 204 struct confargs *ca = aux; 205 206 if (mediabay == NULL && ca->ca_nreg > 0) 207 printf(" offset 0x%x", ca->ca_reg[0]); 208 209 return QUIET; 210 } 211 212 int 213 mediabay_intr(v) 214 void *v; 215 { 216 struct mediabay_softc *sc = v; 217 218 wakeup(&sc->sc_kthread); 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_create(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 sleep: 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", sc->sc_dev.dv_xname); 253 sc->sc_content = NULL; 254 255 /* disable media-bay */ 256 fcr = in32rb(sc->sc_fcr); 257 fcr &= ~(FCR_MEDIABAY_ENABLE | 258 FCR_MEDIABAY_IDE_ENABLE | 259 FCR_MEDIABAY_CD_POWER | 260 FCR_MEDIABAY_FD_ENABLE); 261 out32rb(sc->sc_fcr, fcr); 262 } 263 break; 264 case MEDIABAY_ID_FD: 265 DPRINTF("FD inserted\n"); 266 break; 267 case MEDIABAY_ID_CD: 268 DPRINTF("CD inserted\n"); 269 270 if (sc->sc_content == NULL) 271 mediabay_attach_content(sc); 272 break; 273 default: 274 printf("unknown event (0x%x)\n", x); 275 } 276 277 goto sleep; 278 } 279 280 /* PBG3: 0x7025X0c0 */ 281 /* 2400: 0x0070X0a8 */ 282