mediabay.c revision 1.12.8.1
1 /* $NetBSD: mediabay.c,v 1.12.8.1 2007/07/11 20:00:38 mjf 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 1.12.8.1 2007/07/11 20:00:38 mjf 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 lwp_t *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_kthread __P((void *)); 61 62 CFATTACH_DECL(mediabay, sizeof(struct mediabay_softc), 63 mediabay_match, mediabay_attach, NULL, NULL); 64 65 #ifdef MEDIABAY_DEBUG 66 # define DPRINTF printf 67 #else 68 # define DPRINTF while (0) printf 69 #endif 70 71 #define FCR_MEDIABAY_RESET 0x00000002 72 #define FCR_MEDIABAY_IDE_ENABLE 0x00000008 73 #define FCR_MEDIABAY_FD_ENABLE 0x00000010 74 #define FCR_MEDIABAY_ENABLE 0x00000080 75 #define FCR_MEDIABAY_CD_POWER 0x00800000 76 77 #define MEDIABAY_ID(x) (((x) >> 12) & 0xf) 78 #define MEDIABAY_ID_FD 0 79 #define MEDIABAY_ID_CD 3 80 #define MEDIABAY_ID_NONE 7 81 82 int 83 mediabay_match(parent, cf, aux) 84 struct device *parent; 85 struct cfdata *cf; 86 void *aux; 87 { 88 struct confargs *ca = aux; 89 90 if (strcmp(ca->ca_name, "media-bay") == 0) 91 return 1; 92 93 return 0; 94 } 95 96 /* 97 * Attach all the sub-devices we can find 98 */ 99 void 100 mediabay_attach(parent, self, aux) 101 struct device *parent, *self; 102 void *aux; 103 { 104 struct mediabay_softc *sc = (struct mediabay_softc *)self; 105 struct confargs *ca = aux; 106 int irq, itype; 107 108 ca->ca_reg[0] += ca->ca_baseaddr; 109 110 sc->sc_addr = mapiodev(ca->ca_reg[0], PAGE_SIZE); 111 sc->sc_fcr = sc->sc_addr + 1; 112 sc->sc_node = ca->ca_node; 113 sc->sc_baseaddr = ca->ca_baseaddr; 114 irq = ca->ca_intr[0]; 115 itype = IST_LEVEL; 116 117 if (ca->ca_nintr == 8 && ca->ca_intr[1] == 0) 118 itype = IST_EDGE; 119 120 printf(" irq %d %s\n", irq, intr_typename(itype)); 121 122 intr_establish(irq, itype, IPL_BIO, mediabay_intr, sc); 123 124 sc->sc_content = NULL; 125 126 if (MEDIABAY_ID(in32rb(sc->sc_addr)) != MEDIABAY_ID_NONE) 127 mediabay_attach_content(sc); 128 129 kthread_create(PRI_NONE, 0, NULL, mediabay_kthread, sc, 130 &sc->sc_kthread, "media-bay"); 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_kthread(v) 224 void *v; 225 { 226 struct mediabay_softc *sc = v; 227 u_int x, fcr; 228 229 for (;;) { 230 tsleep(&sc->sc_kthread, PRIBIO, "mbayev", 0); 231 232 /* sleep 0.25 sec */ 233 tsleep(mediabay_kthread, PRIBIO, "mbayev", hz/4); 234 235 DPRINTF("%s: ", sc->sc_dev.dv_xname); 236 x = in32rb(sc->sc_addr); 237 238 switch (MEDIABAY_ID(x)) { 239 case MEDIABAY_ID_NONE: 240 DPRINTF("removed\n"); 241 if (sc->sc_content != NULL) { 242 config_detach(sc->sc_content, DETACH_FORCE); 243 DPRINTF("%s: detach done\n", 244 sc->sc_dev.dv_xname); 245 sc->sc_content = NULL; 246 247 /* disable media-bay */ 248 fcr = in32rb(sc->sc_fcr); 249 fcr &= ~(FCR_MEDIABAY_ENABLE | 250 FCR_MEDIABAY_IDE_ENABLE | 251 FCR_MEDIABAY_CD_POWER | 252 FCR_MEDIABAY_FD_ENABLE); 253 out32rb(sc->sc_fcr, fcr); 254 } 255 break; 256 case MEDIABAY_ID_FD: 257 DPRINTF("FD inserted\n"); 258 break; 259 case MEDIABAY_ID_CD: 260 DPRINTF("CD inserted\n"); 261 262 if (sc->sc_content == NULL) 263 mediabay_attach_content(sc); 264 break; 265 default: 266 printf("unknown event (0x%x)\n", x); 267 } 268 } 269 } 270 271 /* PBG3: 0x7025X0c0 */ 272 /* 3400: 0x7070X080 */ 273 /* 2400: 0x0070X0a8 */ 274
Indexes created Mon Oct 20 20:10:13 GMT 2025