pckbc_js.c revision 1.7.6.2
1 /* $NetBSD: pckbc_js.c,v 1.7.6.2 2004/09/18 14:40:28 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Valeriy E. Ushakov 5 * 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 OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: pckbc_js.c,v 1.7.6.2 2004/09/18 14:40:28 skrll Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/device.h> 37 #include <sys/malloc.h> 38 39 #include <machine/autoconf.h> 40 #include <machine/bus.h> 41 #include <machine/intr.h> 42 43 #include <dev/ic/i8042reg.h> 44 #include <dev/ic/pckbcvar.h> 45 #include <dev/pckbport/pckbportvar.h> 46 47 #include <dev/ebus/ebusreg.h> 48 #include <dev/ebus/ebusvar.h> 49 50 #ifdef __GENERIC_SOFT_INTERRUPTS_ALL_LEVELS 51 #define IPL_JSCKBD IPL_TTY 52 #else 53 #define IPL_JSCKBD IPL_SOFTSERIAL 54 #endif 55 56 struct pckbc_js_softc { 57 struct pckbc_softc jsc_pckbc; /* real "pckbc" softc */ 58 59 /* kbd and mouse share interrupt in both mr.coffee and krups */ 60 u_int32_t jsc_intr; 61 int jsc_establised; 62 void *jsc_int_cookie; 63 }; 64 65 66 static int pckbc_obio_match(struct device *, struct cfdata *, void *); 67 static void pckbc_obio_attach(struct device *, struct device *, void *); 68 69 static int pckbc_ebus_match(struct device *, struct cfdata *, void *); 70 static void pckbc_ebus_attach(struct device *, struct device *, void *); 71 72 static void pckbc_js_attach_common( struct pckbc_js_softc *, 73 bus_space_tag_t, bus_addr_t, int, int); 74 static void pckbc_js_intr_establish(struct pckbc_softc *, pckbport_slot_t); 75 static int jsc_pckbdintr(void *vsc); 76 77 /* Mr.Coffee */ 78 CFATTACH_DECL(pckbc_obio, sizeof(struct pckbc_js_softc), 79 pckbc_obio_match, pckbc_obio_attach, NULL, NULL); 80 81 /* ms-IIep */ 82 CFATTACH_DECL(pckbc_ebus, sizeof(struct pckbc_js_softc), 83 pckbc_ebus_match, pckbc_ebus_attach, NULL, NULL); 84 85 #define PCKBC_PROM_DEVICE_NAME "8042" 86 87 static int 88 pckbc_obio_match(parent, cf, aux) 89 struct device *parent; 90 struct cfdata *cf; 91 void *aux; 92 { 93 union obio_attach_args *uoba = aux; 94 struct sbus_attach_args *sa = &uoba->uoba_sbus; 95 96 return (strcmp(sa->sa_name, PCKBC_PROM_DEVICE_NAME) == 0); 97 } 98 99 static int 100 pckbc_ebus_match(parent, cf, aux) 101 struct device *parent; 102 struct cfdata *cf; 103 void *aux; 104 { 105 struct ebus_attach_args *ea = aux; 106 107 return (strcmp(ea->ea_name, PCKBC_PROM_DEVICE_NAME) == 0); 108 } 109 110 111 static void 112 pckbc_obio_attach(parent, self, aux) 113 struct device *parent, *self; 114 void *aux; 115 { 116 struct pckbc_js_softc *jsc = (struct pckbc_js_softc *)self; 117 union obio_attach_args *uoba = aux; 118 struct sbus_attach_args *sa = &uoba->uoba_sbus; 119 bus_space_tag_t iot; 120 bus_addr_t ioaddr; 121 int intr, isconsole; 122 123 iot = sa->sa_bustag; 124 ioaddr = BUS_ADDR(sa->sa_slot, sa->sa_offset); 125 intr = sa->sa_nintr ? sa->sa_pri : /* level */ 13; 126 127 /* 128 * TODO: 129 * . on OFW machines stdin is keyboard node, not 8042 node 130 * . on OBP machines 8042 node is faked by boot's prompatch 131 * and PROM's stdin points to zs keyboard (add prom patch?) 132 * . we probably want the stdout node to control whether 133 * console goes to serial 134 */ 135 isconsole = 1; 136 137 pckbc_js_attach_common(jsc, iot, ioaddr, intr, isconsole); 138 } 139 140 static void 141 pckbc_ebus_attach(parent, self, aux) 142 struct device *parent, *self; 143 void *aux; 144 { 145 struct pckbc_js_softc *jsc = (struct pckbc_js_softc *)self; 146 struct ebus_attach_args *ea = aux; 147 bus_space_tag_t iot; 148 bus_addr_t ioaddr; 149 int intr; 150 int stdin_node, node; 151 int isconsole; 152 153 iot = ea->ea_bustag; 154 ioaddr = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); 155 intr = ea->ea_nintr ? ea->ea_intr[0] : /* line */ 0; 156 157 /* search children of "8042" node for stdin (keyboard) */ 158 stdin_node = prom_instance_to_package(prom_stdin()); 159 isconsole = 0; 160 161 for (node = prom_firstchild(ea->ea_node); 162 node != 0; node = prom_nextsibling(node)) 163 if (node == stdin_node) { 164 isconsole = 1; 165 break; 166 } 167 168 pckbc_js_attach_common(jsc, iot, ioaddr, intr, isconsole); 169 } 170 171 172 static void 173 pckbc_js_attach_common(jsc, iot, ioaddr, intr, isconsole) 174 struct pckbc_js_softc *jsc; 175 bus_space_tag_t iot; 176 bus_addr_t ioaddr; 177 int intr; 178 int isconsole; 179 { 180 struct pckbc_softc *sc = (struct pckbc_softc *)jsc; 181 struct pckbc_internal *t; 182 183 jsc->jsc_pckbc.intr_establish = pckbc_js_intr_establish; 184 jsc->jsc_intr = intr; 185 jsc->jsc_establised = 0; 186 187 if (isconsole) { 188 int status; 189 190 status = pckbc_cnattach(iot, ioaddr, KBCMDP, PCKBC_KBD_SLOT); 191 if (status == 0) 192 printf(": cnattach ok"); 193 else 194 printf(": cnattach %d", status); 195 } 196 197 if (pckbc_is_console(iot, ioaddr)) { 198 t = &pckbc_consdata; 199 pckbc_console_attached = 1; 200 } else { 201 bus_space_handle_t ioh_d, ioh_c; 202 203 if (bus_space_map(iot, ioaddr + KBDATAP, 1, 0, &ioh_d) != 0) { 204 printf(": unable to map data register\n"); 205 return; 206 } 207 208 if (bus_space_map(iot, ioaddr + KBCMDP, 1, 0, &ioh_c) != 0) { 209 bus_space_unmap(iot, ioh_d, 1); 210 printf(": unable to map cmd register\n"); 211 return; 212 } 213 214 t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_WAITOK); 215 memset(t, 0, sizeof(struct pckbc_internal)); 216 t->t_iot = iot; 217 t->t_ioh_d = ioh_d; 218 t->t_ioh_c = ioh_c; 219 t->t_addr = ioaddr; 220 t->t_cmdbyte = KC8_CPU; /* initial command: enable ports */ 221 callout_init(&t->t_cleanup); 222 223 (void) pckbc_poll_data1(t, PCKBC_KBD_SLOT); /* flush */ 224 225 if (pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST) == 0) 226 printf(": unable to request self test"); 227 else { 228 int response; 229 230 response = pckbc_poll_data1(t, PCKBC_KBD_SLOT); 231 if (response == 0x55) 232 printf(": selftest ok"); 233 else 234 printf(": selftest failed (0x%02x)", response); 235 } 236 } 237 238 /* crosslink */ 239 t->t_sc = sc; 240 sc->id = t; 241 242 /* finish off the attach */ 243 printf("\n"); 244 pckbc_attach(sc); 245 } 246 247 248 /* 249 * Keyboard and mouse share the interrupt 250 * so don't install interrupt handler twice. 251 */ 252 static void 253 pckbc_js_intr_establish(sc, slot) 254 struct pckbc_softc *sc; 255 pckbport_slot_t slot; 256 { 257 struct pckbc_js_softc *jsc = (struct pckbc_js_softc *)sc; 258 void *res; 259 260 if (jsc->jsc_establised) { 261 #ifdef DEBUG 262 printf("%s: %s slot shares interrupt (already established)\n", 263 sc->sc_dv.dv_xname, pckbc_slot_names[slot]); 264 #endif 265 return; 266 } 267 268 /* 269 * We can not choose the devic class interruptlevel freely, 270 * so we debounce via a softinterrupt. 271 */ 272 jsc->jsc_int_cookie = softintr_establish(IPL_JSCKBD, 273 pckbcintr_soft, &jsc->jsc_pckbc); 274 if (jsc->jsc_int_cookie == NULL) { 275 printf("%s: unable to establish %s soft interrupt\n", 276 sc->sc_dv.dv_xname, pckbc_slot_names[slot]); 277 return; 278 } 279 res = bus_intr_establish(sc->id->t_iot, jsc->jsc_intr, 280 IPL_SERIAL, jsc_pckbdintr, jsc); 281 if (res == NULL) 282 printf("%s: unable to establish %s slot interrupt\n", 283 sc->sc_dv.dv_xname, pckbc_slot_names[slot]); 284 else 285 jsc->jsc_establised = 1; 286 } 287 288 static int 289 jsc_pckbdintr(void *vsc) 290 { 291 struct pckbc_js_softc *jsc = vsc; 292 293 softintr_schedule(jsc->jsc_int_cookie); 294 pckbcintr_hard(&jsc->jsc_pckbc); 295 /* 296 * This interrupt is not shared on javastations, avoid "stray" 297 * warnings. XXX - why do "stray interrupt" warnings happen if 298 * we don't claim the interrupt always? 299 */ 300 return 1; 301 } 302 303 /* 304 * MD hook for use without MI wscons. 305 * Called by pckbc_cnattach(). 306 */ 307 int 308 pckbport_machdep_cnattach(constag, slot) 309 pckbport_tag_t constag; 310 pckbport_slot_t slot; 311 { 312 313 return (0); 314 } 315
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