1 /* $NetBSD: sa1111_kbc.c,v 1.19 2022/09/27 06:36:43 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Ben Harris. 5 * Copyright (c) 2002, 2004 Genetec Corporation. All rights reserved. 6 * Written by Hiroyuki Bessho for Genetec Corporation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of Genetec Corporation may not be used to endorse or 17 * promote products derived from this software without specific prior 18 * written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 * Driver for keyboard controller in SA-1111 companion chip. 33 */ 34 /* 35 * Copyright (c) 1998 36 * Matthias Drochner. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59 #include <sys/cdefs.h> 60 __KERNEL_RCSID(0, "$NetBSD: sa1111_kbc.c,v 1.19 2022/09/27 06:36:43 skrll Exp $"); 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/types.h> 65 #include <sys/callout.h> 66 #include <sys/kernel.h> 67 #include <sys/proc.h> 68 #include <sys/conf.h> 69 #include <sys/device.h> 70 #include <sys/errno.h> 71 #include <sys/queue.h> 72 #include <sys/bus.h> 73 #include <sys/rndsource.h> 74 75 #include <arm/sa11x0/sa1111_reg.h> 76 #include <arm/sa11x0/sa1111_var.h> 77 78 #include <dev/pckbport/pckbportvar.h> /* for prototypes */ 79 80 #include "pckbd.h" 81 #include "locators.h" 82 83 struct sackbc_softc { 84 device_t dev; 85 86 bus_space_tag_t iot; 87 bus_space_handle_t ioh; 88 89 void *ih_rx; /* receive interrupt */ 90 int intr; /* interrupt number */ 91 int slot; /* KBD_SLOT or AUX_SLOT */ 92 93 int polling; /* don't process data in interrupt handler */ 94 int poll_stat; /* data read from inr handler if polling */ 95 int poll_data; /* status read from intr handler if polling */ 96 97 krndsource_t rnd_source; 98 pckbport_tag_t pt; 99 }; 100 101 static int sackbc_match(device_t, cfdata_t, void *); 102 static void sackbc_attach(device_t, device_t, void *); 103 104 static int sackbc_xt_translation(void *, pckbport_slot_t, int); 105 #define sackbc_send_devcmd sackbc_send_cmd 106 static int sackbc_send_devcmd(void *, pckbport_slot_t, u_char); 107 static int sackbc_poll_data1(void *, pckbport_slot_t); 108 static void sackbc_slot_enable(void *, pckbport_slot_t, int); 109 static void sackbc_intr_establish(void *, pckbport_slot_t); 110 static void sackbc_set_poll(void *, pckbport_slot_t, int); 111 112 CFATTACH_DECL_NEW(sackbc, sizeof(struct sackbc_softc), sackbc_match, 113 sackbc_attach, NULL, NULL); 114 115 static struct pckbport_accessops const sackbc_ops = { 116 sackbc_xt_translation, 117 sackbc_send_devcmd, 118 sackbc_poll_data1, 119 sackbc_slot_enable, 120 sackbc_intr_establish, 121 sackbc_set_poll 122 }; 123 124 #define KBD_DELAY DELAY(8) 125 126 /*#define SACKBCDEBUG*/ 127 128 #ifdef SACKBCDEBUG 129 #define DPRINTF(arg) printf arg 130 #else 131 #define DPRINTF(arg) 132 #endif 133 134 135 static int 136 sackbc_match(device_t parent, cfdata_t cf, void *aux) 137 { 138 struct sa1111_attach_args *aa = (struct sa1111_attach_args *)aux; 139 140 switch (aa->sa_addr) { 141 case SACC_KBD0: 142 case SACC_KBD1: 143 return 1; 144 } 145 return 0; 146 } 147 148 #if 0 149 static int 150 sackbc_txint(void *cookie) 151 { 152 struct sackbc_softc *sc = cookie; 153 154 bus_space_read_4(sc->iot, sc->ioh, SACCKBD_STAT); 155 156 return 0; 157 } 158 #endif 159 160 static int 161 sackbc_rxint(void *cookie) 162 { 163 struct sackbc_softc *sc = cookie; 164 int stat, code = -1; 165 166 stat = bus_space_read_4(sc->iot, sc->ioh, SACCKBD_STAT); 167 DPRINTF(("sackbc_rxint stat=%x\n", stat)); 168 if (stat & KBDSTAT_RXF) { 169 code = bus_space_read_4(sc->iot, sc->ioh, SACCKBD_DATA); 170 171 rnd_add_uint32(&sc->rnd_source, (stat<<8)|code); 172 173 if (sc->polling) { 174 sc->poll_data = code; 175 sc->poll_stat = stat; 176 } else 177 pckbportintr(sc->pt, sc->slot, code); 178 return 1; 179 } 180 181 return 0; 182 } 183 184 static void 185 sackbc_intr_establish(void *cookie, pckbport_slot_t slot) 186 { 187 struct sackbc_softc *sc = cookie; 188 189 if (!(sc->polling) && sc->ih_rx == NULL) { 190 sc->ih_rx = sacc_intr_establish( 191 (sacc_chipset_tag_t *) 192 device_private(device_parent(sc->dev)), 193 sc->intr+1, IST_EDGE_RAISE, IPL_TTY, sackbc_rxint, sc); 194 if (sc->ih_rx == NULL) { 195 aprint_normal_dev(sc->dev, "can't establish interrupt\n"); 196 } 197 } 198 } 199 200 static void 201 sackbc_disable_intrhandler(struct sackbc_softc *sc) 202 { 203 if (sc->polling && sc->ih_rx) { 204 sacc_intr_disestablish( 205 (sacc_chipset_tag_t *) 206 device_private(device_parent(sc->dev)), 207 sc->ih_rx); 208 sc->ih_rx = NULL; 209 } 210 } 211 212 static void 213 sackbc_attach(device_t parent, device_t self, void *aux) 214 { 215 struct sackbc_softc *sc = device_private(self); 216 struct sacc_softc *psc = device_private(parent); 217 struct sa1111_attach_args *aa = (struct sa1111_attach_args *)aux; 218 device_t child; 219 uint32_t tmp, clock_bit; 220 int intr, slot; 221 222 switch (aa->sa_addr) { 223 case SACC_KBD0: clock_bit = (1<<6); intr = 21; break; 224 case SACC_KBD1: clock_bit = (1<<5); intr = 18; break; 225 default: 226 return; 227 } 228 229 if (aa->sa_size <= 0) 230 aa->sa_size = SACCKBD_SIZE; 231 if (aa->sa_intr == SACCCF_INTR_DEFAULT) 232 aa->sa_intr = intr; 233 234 sc->dev = self; 235 sc->iot = psc->sc_iot; 236 if (bus_space_subregion(psc->sc_iot, psc->sc_ioh, 237 aa->sa_addr, aa->sa_size, &sc->ioh)) { 238 aprint_normal(": can't map subregion\n"); 239 return; 240 } 241 242 /* enable clock for PS/2 kbd or mouse */ 243 tmp = bus_space_read_4(psc->sc_iot, psc->sc_ioh, SACCSC_SKPCR); 244 bus_space_write_4(psc->sc_iot, psc->sc_ioh, SACCSC_SKPCR, 245 tmp | clock_bit); 246 247 sc->ih_rx = NULL; 248 sc->intr = aa->sa_intr; 249 sc->polling = 0; 250 251 tmp = bus_space_read_4(sc->iot, sc->ioh, SACCKBD_CR); 252 bus_space_write_4(sc->iot, sc->ioh, SACCKBD_CR, tmp | KBDCR_ENA); 253 254 /* XXX: this is necessary to get keyboard working. but I don't know why */ 255 bus_space_write_4(sc->iot, sc->ioh, SACCKBD_CLKDIV, 2); 256 257 tmp = bus_space_read_4(sc->iot, sc->ioh, SACCKBD_STAT); 258 if ((tmp & KBDSTAT_ENA) == 0) { 259 printf("??? can't enable KBD controller\n"); 260 return; 261 } 262 263 printf("\n"); 264 265 sc->pt = pckbport_attach(sc, &sackbc_ops); 266 267 /* 268 * Although there is no such thing as SLOT for SA-1111 kbd 269 * controller, pckbd and pms drivers require it. 270 */ 271 for (slot = PCKBPORT_KBD_SLOT; slot <= PCKBPORT_AUX_SLOT; ++slot) { 272 child = pckbport_attach_slot(self, sc->pt, slot); 273 274 if (child == NULL) 275 continue; 276 sc->slot = slot; 277 rnd_attach_source(&sc->rnd_source, device_xname(child), 278 RND_TYPE_TTY, RND_FLAG_DEFAULT|RND_FLAG_ESTIMATE_VALUE); 279 /* only one of KBD_SLOT or AUX_SLOT is used. */ 280 break; 281 } 282 } 283 284 285 static inline int 286 sackbc_wait_output(struct sackbc_softc *sc) 287 { 288 u_int i, stat; 289 290 for (i = 100000; i; i--){ 291 stat = bus_space_read_4(sc->iot, sc->ioh, SACCKBD_STAT); 292 delay(100); 293 if (stat & KBDSTAT_TXE) 294 return 1; 295 } 296 return 0; 297 } 298 299 static int 300 sackbc_poll_data1(void *cookie, pckbport_slot_t slot) 301 { 302 struct sackbc_softc *sc = cookie; 303 int i, s, stat, c = -1; 304 305 s = spltty(); 306 307 if (sc->polling){ 308 stat = sc->poll_stat; 309 c = sc->poll_data; 310 sc->poll_data = -1; 311 sc->poll_stat = -1; 312 if (stat >= 0 && 313 (stat & (KBDSTAT_RXF|KBDSTAT_STP)) == KBDSTAT_RXF) { 314 splx(s); 315 return c; 316 } 317 } 318 319 /* if 1 port read takes 1us (?), this polls for 100ms */ 320 for (i = 100000; i; i--) { 321 stat = bus_space_read_4(sc->iot, sc->ioh, SACCKBD_STAT); 322 if ((stat & (KBDSTAT_RXF|KBDSTAT_STP)) == KBDSTAT_RXF) { 323 KBD_DELAY; 324 c = bus_space_read_4(sc->iot, sc->ioh, SACCKBD_DATA); 325 break; 326 } 327 } 328 329 splx(s); 330 return c; 331 } 332 333 static int 334 sackbc_send_cmd(void *cookie, pckbport_slot_t slot, u_char val) 335 { 336 struct sackbc_softc *sc = cookie; 337 338 if (!sackbc_wait_output(sc)) 339 return 0; 340 bus_space_write_1(sc->iot, sc->ioh, SACCKBD_DATA, val); 341 return 1; 342 } 343 344 345 /* 346 * Glue functions for pckbd on sackbc. 347 * These functions emulate those in dev/ic/pckbc.c. 348 * 349 */ 350 351 /* 352 * switch scancode translation on / off 353 * return nonzero on success 354 */ 355 static int 356 sackbc_xt_translation(void *self, pckbport_slot_t slot, int on) 357 { 358 /* KBD/Mouse controller doesn't have scancode translation */ 359 return !on; 360 } 361 362 static void 363 sackbc_slot_enable(void *self, pckbport_slot_t slot, int on) 364 { 365 #if 0 366 struct sackbc_softc *sc = device_private(self); 367 int cmd; 368 369 cmd = on ? KBC_KBDENABLE : KBC_KBDDISABLE; 370 if (!sackbc_send_cmd(sc, cmd)) 371 printf("sackbc_slot_enable(%d) failed\n", on); 372 #endif 373 } 374 375 376 static void 377 sackbc_set_poll(void *self, pckbport_slot_t slot, int on) 378 { 379 struct sackbc_softc *sc = device_private(self); 380 int s; 381 382 s = spltty(); 383 384 if (sc->polling != on) { 385 386 sc->polling = on; 387 388 if (on) { 389 sc->poll_data = sc->poll_stat = -1; 390 sackbc_disable_intrhandler(sc); 391 } else { 392 /* 393 * If disabling polling on a device that's 394 * been configured, make sure there are no 395 * bytes left in the FIFO, holding up the 396 * interrupt line. Otherwise we won't get any 397 * further interrupts. 398 */ 399 sackbc_rxint(sc); 400 sackbc_intr_establish(sc, sc->slot); 401 } 402 } 403 splx(s); 404 } 405
Indexes created Sun Sep 28 16:09:52 GMT 2025