1 /* $NetBSD: vrkiu.c,v 1.42 2025/02/03 22:30:15 andvar Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 SASAKI Takesi All rights reserved. 5 * Copyright (c) 1999, 2000, 2002 TAKEMRUA, Shin All rights reserved. 6 * Copyright (c) 1999 PocketBSD Project. All rights reserved. 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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the PocketBSD project 19 * and its contributors. 20 * 4. Neither the name of the project nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: vrkiu.c,v 1.42 2025/02/03 22:30:15 andvar Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/tty.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/conf.h> 46 #include <sys/kernel.h> 47 #include <sys/proc.h> 48 49 #include <machine/intr.h> 50 #include <machine/cpu.h> 51 #include <machine/bus.h> 52 #include <machine/platid.h> 53 #include <machine/platid_mask.h> 54 55 #include <dev/hpc/hpckbdvar.h> 56 57 #include <hpcmips/vr/vr.h> 58 #include <hpcmips/vr/vripif.h> 59 #include <hpcmips/vr/vrkiureg.h> 60 #include <hpcmips/vr/vrkiuvar.h> 61 #include <hpcmips/vr/icureg.h> 62 63 #include "opt_wsdisplay_compat.h" 64 #include "opt_pckbd_layout.h" 65 #include <dev/wscons/wsconsio.h> 66 #include <dev/wscons/wskbdvar.h> 67 #include <dev/wscons/wsksymdef.h> 68 #include <dev/wscons/wsksymvar.h> 69 #ifdef WSDISPLAY_COMPAT_RAWKBD 70 #include <dev/hpc/pckbd_encode.h> 71 #endif 72 73 #define VRKIUDEBUG 74 #ifdef VRKIUDEBUG 75 int vrkiu_debug = 0; 76 #define DPRINTF(arg) if (vrkiu_debug) printf arg; 77 #else 78 #define DPRINTF(arg) 79 #endif 80 81 static int vrkiumatch(device_t, cfdata_t, void *); 82 static void vrkiuattach(device_t, device_t, void *); 83 84 int vrkiu_intr(void *); 85 86 static int vrkiu_init(struct vrkiu_chip *, bus_space_tag_t, bus_space_handle_t); 87 static void vrkiu_write(struct vrkiu_chip *, int, unsigned short); 88 static unsigned short vrkiu_read(struct vrkiu_chip *, int); 89 static int vrkiu_is_console(bus_space_tag_t, bus_space_handle_t); 90 static void vrkiu_scan(struct vrkiu_chip *); 91 static int countbits(int); 92 static void eliminate_phantom_keys(struct vrkiu_chip *, unsigned short *); 93 static int vrkiu_poll(void*); 94 static int vrkiu_input_establish(void*, struct hpckbd_if*); 95 96 CFATTACH_DECL_NEW(vrkiu, sizeof(struct vrkiu_softc), 97 vrkiumatch, vrkiuattach, NULL, NULL); 98 99 struct vrkiu_chip *vrkiu_consdata = NULL; 100 101 static inline void 102 vrkiu_write(struct vrkiu_chip *chip, int port, unsigned short val) 103 { 104 105 bus_space_write_2(chip->kc_iot, chip->kc_ioh, port, val); 106 } 107 108 static inline unsigned short 109 vrkiu_read(struct vrkiu_chip *chip, int port) 110 { 111 112 return (bus_space_read_2(chip->kc_iot, chip->kc_ioh, port)); 113 } 114 115 static inline int 116 vrkiu_is_console(bus_space_tag_t iot, bus_space_handle_t ioh) 117 { 118 119 if (vrkiu_consdata && 120 vrkiu_consdata->kc_iot == iot && 121 vrkiu_consdata->kc_ioh == ioh) { 122 return (1); 123 } else { 124 return (0); 125 } 126 } 127 128 static int 129 vrkiumatch(device_t parent, cfdata_t cf, void *aux) 130 { 131 132 return (1); 133 } 134 135 static void 136 vrkiuattach(device_t parent, device_t self, void *aux) 137 { 138 struct vrkiu_softc *sc = device_private(self); 139 struct vrip_attach_args *va = aux; 140 struct hpckbd_attach_args haa; 141 int isconsole, res; 142 143 bus_space_tag_t iot = va->va_iot; 144 bus_space_handle_t ioh; 145 146 if (va->va_parent_ioh != 0) 147 res = bus_space_subregion(iot, va->va_parent_ioh, va->va_addr, 148 va->va_size, &ioh); 149 else 150 res = bus_space_map(iot, va->va_addr, 1, 0, &ioh); 151 if (res != 0) { 152 printf(": can't map bus space\n"); 153 return; 154 } 155 156 isconsole = vrkiu_is_console(iot, ioh); 157 if (isconsole) { 158 sc->sc_chip = vrkiu_consdata; 159 } else { 160 sc->sc_chip = &sc->sc_chip_body; 161 vrkiu_init(sc->sc_chip, iot, ioh); 162 } 163 sc->sc_chip->kc_sc = sc; 164 165 if (!(sc->sc_handler = 166 vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY, 167 vrkiu_intr, sc))) { 168 printf (": can't map interrupt line.\n"); 169 return; 170 } 171 /* Level2 register setting */ 172 vrip_intr_setmask2(va->va_vc, sc->sc_handler, KIUINT_KDATRDY, 1); 173 174 printf("\n"); 175 176 /* attach hpckbd */ 177 haa.haa_ic = &sc->sc_chip->kc_if; 178 config_found(self, &haa, hpckbd_print, CFARGS_NONE); 179 } 180 181 /* 182 * initialize device 183 */ 184 static int 185 vrkiu_init(struct vrkiu_chip *chip, bus_space_tag_t iot, 186 bus_space_handle_t ioh) 187 { 188 189 memset(chip, 0, sizeof(struct vrkiu_chip)); 190 chip->kc_iot = iot; 191 chip->kc_ioh = ioh; 192 chip->kc_enabled = 0; 193 194 chip->kc_if.hii_ctx = chip; 195 chip->kc_if.hii_establish = vrkiu_input_establish; 196 chip->kc_if.hii_poll = vrkiu_poll; 197 198 /* set KIU */ 199 vrkiu_write(chip, KIURST, 1); /* reset */ 200 vrkiu_write(chip, KIUSCANLINE, 0); /* 96keys */ 201 vrkiu_write(chip, KIUWKS, 0x18a4); /* XXX: scan timing! */ 202 vrkiu_write(chip, KIUWKI, 450); 203 vrkiu_write(chip, KIUSCANREP, 0x8023); 204 /* KEYEN | STPREP = 2 | ATSTP | ATSCAN */ 205 206 return (0); 207 } 208 209 int 210 vrkiu_intr(void *arg) 211 { 212 struct vrkiu_softc *sc = arg; 213 214 /* When key scan finished, this entry is called. */ 215 #if 0 216 DPRINTF(("vrkiu_intr: intr=%x scan=%x\n", 217 vrkiu_read(sc->sc_chip, KIUINT) & 7, 218 vrkiu_read(sc->sc_chip, KIUSCANS) & KIUSCANS_SSTAT_MASK)); 219 #endif 220 221 /* 222 * First, we must clear the interrupt register because 223 * vrkiu_scan() may takes long time if a bitmap screen 224 * scrolls up and it makes us to miss some key release 225 * event. 226 */ 227 vrkiu_write(sc->sc_chip, KIUINT, 0x7); /* Clear all interrupt */ 228 229 #if 1 230 /* just return if kiu is scanning keyboard. */ 231 if ((vrkiu_read(sc->sc_chip, KIUSCANS) & KIUSCANS_SSTAT_MASK) == 232 KIUSCANS_SSTAT_SCANNING) 233 return (0); 234 #endif 235 vrkiu_scan(sc->sc_chip); 236 237 return (0); 238 } 239 240 static int 241 countbits(int d) 242 { 243 int i, n; 244 245 for (i = 0, n = 0; i < NBBY; i++) 246 if (d & (1 << i)) 247 n++; 248 return (n); 249 } 250 251 static void 252 eliminate_phantom_keys(struct vrkiu_chip *chip, unsigned short *scandata) 253 { 254 unsigned char inkey[KIU_NSCANLINE], *prevkey, *reskey; 255 int i, j; 256 #ifdef VRKIUDEBUG 257 int modified = 0; 258 static int prevmod = 0; 259 #endif 260 261 reskey = (unsigned char *)scandata; 262 for (i = 0; i < KIU_NSCANLINE; i++) 263 inkey[i] = reskey[i]; 264 prevkey = (unsigned char *)chip->kc_scandata; 265 266 for (i = 0; i < KIU_NSCANLINE; i++) { 267 if (countbits(inkey[i]) > 1) { 268 for (j = 0; j < KIU_NSCANLINE; j++) { 269 if (i != j && (inkey[i] & inkey[j])) { 270 #ifdef VRKIUDEBUG 271 modified = 1; 272 if (!prevmod) { 273 DPRINTF(("vrkiu_scan: %x:%02x->%02x", 274 i, inkey[i], prevkey[i])); 275 DPRINTF((" %x:%02x->%02x\n", 276 j, inkey[j], prevkey[j])); 277 } 278 #endif 279 reskey[i] = prevkey[i]; 280 reskey[j] = prevkey[j]; 281 } 282 } 283 } 284 } 285 #ifdef VRKIUDEBUG 286 prevmod = modified; 287 #endif 288 } 289 290 static void 291 vrkiu_scan(struct vrkiu_chip* chip) 292 { 293 int i, j, modified, mask; 294 unsigned short scandata[KIU_NSCANLINE/2]; 295 296 if (!chip->kc_enabled) 297 return; 298 299 for (i = 0; i < KIU_NSCANLINE / 2; i++) { 300 scandata[i] = vrkiu_read(chip, KIUDATP + i * 2); 301 } 302 eliminate_phantom_keys(chip, scandata); 303 304 for (i = 0; i < KIU_NSCANLINE / 2; i++) { 305 modified = scandata[i] ^ chip->kc_scandata[i]; 306 chip->kc_scandata[i] = scandata[i]; 307 mask = 1; 308 for (j = 0; j < 16; j++, mask <<= 1) { 309 /* 310 * Simultaneous keypresses are resolved by registering 311 * the one with the lowest bit index first. 312 */ 313 if (modified & mask) { 314 int key = i * 16 + j; 315 DPRINTF(("vrkiu_scan: %s(%d,%d)\n", 316 (scandata[i] & mask) ? "down" : "up", 317 i, j)); 318 hpckbd_input(chip->kc_hpckbd, 319 (scandata[i] & mask), key); 320 } 321 } 322 } 323 } 324 325 /* called from bicons.c */ 326 int 327 vrkiu_getc(void) 328 { 329 static int flag = 1; 330 331 /* 332 * XXX, currently 333 */ 334 if (flag) { 335 flag = 0; 336 printf("%s(%d): vrkiu_getc() is not implemented\n", 337 __FILE__, __LINE__); 338 } 339 return (0); 340 } 341 342 /* 343 * hpckbd interface routines 344 */ 345 int 346 vrkiu_input_establish(void *ic, struct hpckbd_if *kbdif) 347 { 348 struct vrkiu_chip *kc = ic; 349 350 /* save hpckbd interface */ 351 kc->kc_hpckbd = kbdif; 352 353 kc->kc_enabled = 1; 354 355 return (0); 356 } 357 358 int 359 vrkiu_poll(void *ic) 360 { 361 struct vrkiu_chip *kc = ic; 362 363 #if 1 364 /* wait until kiu completes keyboard scan. */ 365 while ((vrkiu_read(kc, KIUSCANS) & KIUSCANS_SSTAT_MASK) == 366 KIUSCANS_SSTAT_SCANNING) 367 /* wait until kiu completes keyboard scan */; 368 #endif 369 370 vrkiu_scan(kc); 371 372 return (0); 373 } 374 375 /* 376 * console support routine 377 */ 378 int 379 vrkiu_cnattach(bus_space_tag_t iot, int iobase) 380 { 381 static struct vrkiu_chip vrkiu_consdata_body; 382 bus_space_handle_t ioh; 383 384 if (vrkiu_consdata) { 385 panic("vrkiu is already attached as the console"); 386 } 387 if (bus_space_map(iot, iobase, 1, 0, &ioh)) { 388 printf("%s(%d): can't map bus space\n", __FILE__, __LINE__); 389 return (-1); 390 } 391 392 if (vrkiu_init(&vrkiu_consdata_body, iot, ioh) != 0) { 393 DPRINTF(("%s(%d): vrkiu_init() failed\n", __FILE__, __LINE__)); 394 return (-1); 395 } 396 vrkiu_consdata = &vrkiu_consdata_body; 397 398 hpckbd_cnattach(&vrkiu_consdata_body.kc_if); 399 400 return (0); 401 } 402
Indexes created Mon Sep 22 05:09:51 GMT 2025