1 /* $NetBSD: pckbc_js.c,v 1.21 2021/12/04 13:34:35 andvar 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 1.21 2021/12/04 13:34:35 andvar 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/kmem.h> 38 #include <sys/bus.h> 39 #include <sys/intr.h> 40 41 #include <machine/autoconf.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 struct pckbc_js_softc { 51 struct pckbc_softc jsc_pckbc; /* real "pckbc" softc */ 52 53 /* kbd and mouse share interrupt in both mr.coffee and krups */ 54 uint32_t jsc_intr; 55 int jsc_established; 56 void *jsc_int_cookie; 57 }; 58 59 60 static int pckbc_obio_match(device_t, cfdata_t, void *); 61 static void pckbc_obio_attach(device_t, device_t, void *); 62 63 static int pckbc_ebus_match(device_t, cfdata_t, void *); 64 static void pckbc_ebus_attach(device_t, device_t, void *); 65 66 static void pckbc_js_attach_common(struct pckbc_js_softc *, 67 bus_space_tag_t, bus_addr_t, int, int); 68 static void pckbc_js_intr_establish(struct pckbc_softc *, pckbport_slot_t); 69 static int jsc_pckbdintr(void *); 70 71 /* Mr.Coffee */ 72 CFATTACH_DECL_NEW(pckbc_obio, sizeof(struct pckbc_js_softc), 73 pckbc_obio_match, pckbc_obio_attach, NULL, NULL); 74 75 /* ms-IIep */ 76 CFATTACH_DECL_NEW(pckbc_ebus, sizeof(struct pckbc_js_softc), 77 pckbc_ebus_match, pckbc_ebus_attach, NULL, NULL); 78 79 #define PCKBC_PROM_DEVICE_NAME "8042" 80 81 static int 82 pckbc_obio_match(device_t parent, cfdata_t cf, void *aux) 83 { 84 union obio_attach_args *uoba = aux; 85 struct sbus_attach_args *sa = &uoba->uoba_sbus; 86 87 return (strcmp(sa->sa_name, PCKBC_PROM_DEVICE_NAME) == 0); 88 } 89 90 static int 91 pckbc_ebus_match(device_t parent, cfdata_t cf, void *aux) 92 { 93 struct ebus_attach_args *ea = aux; 94 95 return (strcmp(ea->ea_name, PCKBC_PROM_DEVICE_NAME) == 0); 96 } 97 98 99 static void 100 pckbc_obio_attach(device_t parent, device_t self, void *aux) 101 { 102 struct pckbc_js_softc *jsc = device_private(self); 103 union obio_attach_args *uoba = aux; 104 struct sbus_attach_args *sa = &uoba->uoba_sbus; 105 bus_space_tag_t iot; 106 bus_addr_t ioaddr; 107 int intr, isconsole; 108 109 jsc->jsc_pckbc.sc_dv = self; 110 iot = sa->sa_bustag; 111 ioaddr = BUS_ADDR(sa->sa_slot, sa->sa_offset); 112 intr = sa->sa_nintr ? sa->sa_pri : /* level */ 13; 113 114 /* 115 * TODO: 116 * . on OFW machines stdin is keyboard node, not 8042 node 117 * . on OBP machines 8042 node is faked by boot's prompatch 118 * and PROM's stdin points to zs keyboard (add prom patch?) 119 * . we probably want the stdout node to control whether 120 * console goes to serial 121 */ 122 isconsole = 1; 123 124 pckbc_js_attach_common(jsc, iot, ioaddr, intr, isconsole); 125 } 126 127 static void 128 pckbc_ebus_attach(device_t parent, device_t self, void *aux) 129 { 130 struct pckbc_js_softc *jsc = device_private(self); 131 struct ebus_attach_args *ea = aux; 132 bus_space_tag_t iot; 133 bus_addr_t ioaddr; 134 int intr; 135 int stdin_node, node; 136 int isconsole; 137 138 jsc->jsc_pckbc.sc_dv = self; 139 iot = ea->ea_bustag; 140 ioaddr = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]); 141 intr = ea->ea_nintr ? ea->ea_intr[0] : /* line */ 0; 142 143 /* search children of "8042" node for stdin (keyboard) */ 144 stdin_node = prom_instance_to_package(prom_stdin()); 145 isconsole = 0; 146 147 for (node = prom_firstchild(ea->ea_node); 148 node != 0; node = prom_nextsibling(node)) 149 if (node == stdin_node) { 150 isconsole = 1; 151 break; 152 } 153 154 pckbc_js_attach_common(jsc, iot, ioaddr, intr, isconsole); 155 } 156 157 158 static void 159 pckbc_js_attach_common(struct pckbc_js_softc *jsc, 160 bus_space_tag_t iot, bus_addr_t ioaddr, int intr, 161 int isconsole) 162 { 163 struct pckbc_softc *sc = (struct pckbc_softc *)jsc; 164 struct pckbc_internal *t; 165 166 jsc->jsc_pckbc.intr_establish = pckbc_js_intr_establish; 167 jsc->jsc_intr = intr; 168 jsc->jsc_established = 0; 169 170 if (isconsole) { 171 int status; 172 173 status = pckbc_cnattach(iot, ioaddr, KBCMDP, PCKBC_KBD_SLOT, 0); 174 if (status == 0) 175 aprint_normal(": cnattach ok"); 176 else 177 aprint_error(": cnattach %d", status); 178 } 179 180 if (pckbc_is_console(iot, ioaddr)) { 181 t = &pckbc_consdata; 182 pckbc_console_attached = 1; 183 } else { 184 bus_space_handle_t ioh_d, ioh_c; 185 186 if (bus_space_map(iot, ioaddr + KBDATAP, 1, 0, &ioh_d) != 0) { 187 aprint_error(": unable to map data register\n"); 188 return; 189 } 190 191 if (bus_space_map(iot, ioaddr + KBCMDP, 1, 0, &ioh_c) != 0) { 192 bus_space_unmap(iot, ioh_d, 1); 193 aprint_error(": unable to map cmd register\n"); 194 return; 195 } 196 197 t = kmem_zalloc(sizeof(struct pckbc_internal), KM_SLEEP); 198 t->t_iot = iot; 199 t->t_ioh_d = ioh_d; 200 t->t_ioh_c = ioh_c; 201 t->t_addr = ioaddr; 202 t->t_cmdbyte = KC8_CPU; /* initial command: enable ports */ 203 callout_init(&t->t_cleanup, 0); 204 205 (void) pckbc_poll_data1(t, PCKBC_KBD_SLOT); /* flush */ 206 207 if (pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST) == 0) 208 aprint_error(": unable to request self test"); 209 else { 210 int response; 211 212 response = pckbc_poll_data1(t, PCKBC_KBD_SLOT); 213 if (response == 0x55) 214 aprint_normal(": selftest ok"); 215 else 216 aprint_error(": selftest failed (0x%02x)", 217 response); 218 } 219 } 220 221 /* crosslink */ 222 t->t_sc = sc; 223 sc->id = t; 224 225 /* finish off the attach */ 226 aprint_normal("\n"); 227 pckbc_attach(sc); 228 } 229 230 231 /* 232 * Keyboard and mouse share the interrupt 233 * so don't install interrupt handler twice. 234 */ 235 static void 236 pckbc_js_intr_establish(struct pckbc_softc *sc, pckbport_slot_t slot) 237 { 238 struct pckbc_js_softc *jsc = (struct pckbc_js_softc *)sc; 239 void *res; 240 241 if (jsc->jsc_established) { 242 #ifdef DEBUG 243 aprint_verbose_dev(sc->sc_dv, 244 "%s slot shares interrupt (already established)\n", 245 pckbc_slot_names[slot]); 246 #endif 247 return; 248 } 249 250 /* 251 * We can not choose the device class interrupt level freely, 252 * so we debounce via a softinterrupt. 253 */ 254 jsc->jsc_int_cookie = softint_establish(SOFTINT_SERIAL, 255 pckbcintr_soft, &jsc->jsc_pckbc); 256 if (jsc->jsc_int_cookie == NULL) { 257 aprint_error_dev(sc->sc_dv, 258 "unable to establish %s soft interrupt\n", 259 pckbc_slot_names[slot]); 260 return; 261 } 262 res = bus_intr_establish(sc->id->t_iot, jsc->jsc_intr, 263 IPL_SERIAL, jsc_pckbdintr, jsc); 264 if (res == NULL) 265 aprint_error_dev(sc->sc_dv, 266 "unable to establish %s slot interrupt\n", 267 pckbc_slot_names[slot]); 268 else 269 jsc->jsc_established = 1; 270 } 271 272 static int 273 jsc_pckbdintr(void *vsc) 274 { 275 struct pckbc_js_softc *jsc = vsc; 276 277 softint_schedule(jsc->jsc_int_cookie); 278 pckbcintr_hard(&jsc->jsc_pckbc); 279 280 /* 281 * This interrupt is not shared on javastations, avoid "stray" 282 * warnings. XXX - why do "stray interrupt" warnings happen if 283 * we don't claim the interrupt always? 284 */ 285 return 1; 286 } 287 288 /* 289 * MD hook for use without MI wscons. 290 * Called by pckbc_cnattach(). 291 */ 292 int 293 pckbport_machdep_cnattach(pckbport_tag_t constag, pckbport_slot_t slot) 294 { 295 296 return (0); 297 } 298
Indexes created Sat Sep 27 14:09:57 GMT 2025