1 /* $OpenBSD: mediabay.c,v 1.8 2022/03/13 12:33:01 mpi 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/param.h> 31 #include <sys/device.h> 32 #include <sys/kernel.h> 33 #include <sys/kthread.h> 34 #include <sys/systm.h> 35 36 #include <uvm/uvm_extern.h> 37 38 #include <dev/ofw/openfirm.h> 39 40 #include <machine/autoconf.h> 41 #include <machine/pio.h> 42 43 struct mediabay_softc { 44 struct device sc_dev; 45 int sc_node; 46 u_int *sc_addr; 47 u_int *sc_fcr; 48 u_int sc_baseaddr; 49 bus_space_tag_t sc_iot; 50 bus_dma_tag_t sc_dmat; 51 struct device *sc_content; 52 struct proc *sc_kthread; 53 }; 54 55 void mediabay_attach(struct device *, struct device *, void *); 56 int mediabay_match(struct device *, void *, void *); 57 int mediabay_print(void *, const char *); 58 void mediabay_attach_content(struct mediabay_softc *); 59 int mediabay_intr(void *); 60 void mediabay_create_kthread(void *); 61 void mediabay_kthread(void *); 62 63 const struct cfattach mediabay_ca = { 64 sizeof(struct mediabay_softc), mediabay_match, mediabay_attach 65 }; 66 struct cfdriver mediabay_cd = { 67 NULL, "mediabay", DV_DULL 68 }; 69 70 71 #ifdef MEDIABAY_DEBUG 72 # define DPRINTF printf 73 #else 74 # define DPRINTF while (0) printf 75 #endif 76 77 #define FCR_MEDIABAY_RESET 0x00000002 78 #define FCR_MEDIABAY_IDE_ENABLE 0x00000008 79 #define FCR_MEDIABAY_FD_ENABLE 0x00000010 80 #define FCR_MEDIABAY_ENABLE 0x00000080 81 #define FCR_MEDIABAY_CD_POWER 0x00800000 82 83 #define MEDIABAY_ID(x) (((x) >> 12) & 0xf) 84 #define MEDIABAY_ID_FD 0 85 #define MEDIABAY_ID_CD 3 86 #define MEDIABAY_ID_NONE 7 87 88 int 89 mediabay_match(parent, v, aux) 90 struct device *parent; 91 void *v; 92 void *aux; 93 { 94 struct confargs *ca = aux; 95 96 if (strcmp(ca->ca_name, "media-bay") == 0 && 97 ca->ca_nintr >= 4 && ca->ca_nreg >= 8) 98 return 1; 99 100 return 0; 101 } 102 103 /* 104 * Attach all the sub-devices we can find 105 */ 106 void 107 mediabay_attach(parent, self, aux) 108 struct device *parent, *self; 109 void *aux; 110 { 111 struct mediabay_softc *sc = (struct mediabay_softc *)self; 112 struct confargs *ca = aux; 113 int irq, type; 114 115 ca->ca_reg[0] += ca->ca_baseaddr; 116 117 sc->sc_addr = mapiodev(ca->ca_reg[0], PAGE_SIZE); 118 sc->sc_fcr = sc->sc_addr + 1; 119 sc->sc_node = ca->ca_node; 120 sc->sc_baseaddr = ca->ca_baseaddr; 121 sc->sc_iot = ca->ca_iot; 122 sc->sc_dmat = ca->ca_dmat; 123 irq = ca->ca_intr[0]; 124 type = IST_LEVEL; 125 126 if (ca->ca_nintr == 8 && ca->ca_intr[1] == 0) 127 type = IST_EDGE; 128 129 printf(" irq %d\n", irq); 130 mac_intr_establish(parent, irq, type, IPL_BIO, mediabay_intr, sc, 131 "mediabay"); 132 133 kthread_create_deferred(mediabay_create_kthread, sc); 134 135 sc->sc_content = NULL; 136 137 if (MEDIABAY_ID(in32rb(sc->sc_addr)) != MEDIABAY_ID_NONE) 138 mediabay_attach_content(sc); 139 } 140 141 void 142 mediabay_attach_content(sc) 143 struct mediabay_softc *sc; 144 { 145 int child; 146 u_int fcr; 147 struct device *content; 148 struct confargs ca; 149 u_int reg[20], intr[5]; 150 char name[32]; 151 152 fcr = in32rb(sc->sc_fcr); 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); 164 165 for (child = OF_child(sc->sc_node); child; child = OF_peer(child)) { 166 bzero(name, sizeof(name)); 167 if (OF_getprop(child, "name", name, sizeof(name)) == -1) 168 continue; 169 ca.ca_name = name; 170 ca.ca_node = child; 171 ca.ca_baseaddr = sc->sc_baseaddr; 172 ca.ca_iot = sc->sc_iot; 173 ca.ca_dmat = sc->sc_dmat; 174 175 ca.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg)); 176 ca.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr, 177 sizeof(intr)); 178 if (ca.ca_nintr == -1) 179 ca.ca_nintr = OF_getprop(child, "interrupts", intr, 180 sizeof(intr)); 181 ca.ca_reg = reg; 182 ca.ca_intr = intr; 183 184 content = config_found(&sc->sc_dev, &ca, mediabay_print); 185 if (content) { 186 sc->sc_content = content; 187 return; 188 } 189 } 190 191 /* No devices found. Disable media-bay. */ 192 fcr &= ~(FCR_MEDIABAY_ENABLE | FCR_MEDIABAY_IDE_ENABLE | 193 FCR_MEDIABAY_CD_POWER | FCR_MEDIABAY_FD_ENABLE); 194 out32rb(sc->sc_fcr, fcr); 195 } 196 197 int 198 mediabay_print(aux, mediabay) 199 void *aux; 200 const char *mediabay; 201 { 202 struct confargs *ca = aux; 203 204 if (mediabay == NULL && ca->ca_nreg > 0) 205 printf(" offset 0x%x", ca->ca_reg[0]); 206 207 return QUIET; 208 } 209 210 int 211 mediabay_intr(v) 212 void *v; 213 { 214 struct mediabay_softc *sc = v; 215 216 wakeup(&sc->sc_kthread); 217 return 1; 218 } 219 220 void 221 mediabay_create_kthread(v) 222 void *v; 223 { 224 struct mediabay_softc *sc = v; 225 226 kthread_create(mediabay_kthread, sc, &sc->sc_kthread, 227 sc->sc_dev.dv_xname); 228 } 229 230 void 231 mediabay_kthread(v) 232 void *v; 233 { 234 struct mediabay_softc *sc = v; 235 u_int x, fcr; 236 237 sleep: 238 tsleep_nsec(&sc->sc_kthread, PRIBIO, "mbayev", INFSLP); 239 240 /* sleep 0.25 sec */ 241 tsleep_nsec(mediabay_kthread, PRIBIO, "mbayev", MSEC_TO_NSEC(250)); 242 243 DPRINTF("%s: ", sc->sc_dev.dv_xname); 244 x = in32rb(sc->sc_addr); 245 246 switch (MEDIABAY_ID(x)) { 247 case MEDIABAY_ID_NONE: 248 DPRINTF("removed\n"); 249 if (sc->sc_content != NULL) { 250 config_detach(sc->sc_content, DETACH_FORCE); 251 DPRINTF("%s: detach done\n", sc->sc_dev.dv_xname); 252 sc->sc_content = NULL; 253 254 /* disable media-bay */ 255 fcr = in32rb(sc->sc_fcr); 256 fcr &= ~(FCR_MEDIABAY_ENABLE | 257 FCR_MEDIABAY_IDE_ENABLE | 258 FCR_MEDIABAY_CD_POWER | 259 FCR_MEDIABAY_FD_ENABLE); 260 out32rb(sc->sc_fcr, fcr); 261 } 262 break; 263 case MEDIABAY_ID_FD: 264 DPRINTF("FD inserted\n"); 265 break; 266 case MEDIABAY_ID_CD: 267 DPRINTF("CD inserted\n"); 268 269 if (sc->sc_content == NULL) 270 mediabay_attach_content(sc); 271 break; 272 default: 273 printf("unknown event (0x%x)\n", x); 274 } 275 276 goto sleep; 277 } 278 279 /* PBG3: 0x7025X0c0 */ 280 /* 2400: 0x0070X0a8 */ 281