1 /* $NetBSD: irframe.c,v 1.42 2008/06/10 22:53:08 cegger Exp $ */ 2 3 /* 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart@augustsson.net). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: irframe.c,v 1.42 2008/06/10 22:53:08 cegger Exp $"); 34 35 #include "irframe.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/ioctl.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 #include <sys/conf.h> 43 #include <sys/malloc.h> 44 #include <sys/poll.h> 45 #include <sys/select.h> 46 #include <sys/vnode.h> 47 48 #include <dev/ir/ir.h> 49 #include <dev/ir/irdaio.h> 50 #include <dev/ir/irframevar.h> 51 52 #ifdef IRFRAME_DEBUG 53 #define DPRINTF(x) if (irframedebug) printf x 54 #define Static 55 int irframedebug = 0; 56 #else 57 #define DPRINTF(x) 58 #define Static static 59 #endif 60 61 dev_type_open(irframeopen); 62 dev_type_close(irframeclose); 63 dev_type_read(irframeread); 64 dev_type_write(irframewrite); 65 dev_type_ioctl(irframeioctl); 66 dev_type_poll(irframepoll); 67 dev_type_kqfilter(irframekqfilter); 68 69 const struct cdevsw irframe_cdevsw = { 70 irframeopen, irframeclose, irframeread, irframewrite, irframeioctl, 71 nostop, notty, irframepoll, nommap, irframekqfilter, D_OTHER, 72 }; 73 74 int irframe_match(device_t parent, cfdata_t match, void *aux); 75 int irframe_activate(device_t self, enum devact act); 76 77 Static int irf_set_params(struct irframe_softc *sc, struct irda_params *p); 78 Static int irf_reset_params(struct irframe_softc *sc); 79 80 #if NIRFRAME == 0 81 /* In case we just have tty attachment. */ 82 CFDRIVER_DECL(irframe, DV_DULL, NULL); 83 #endif 84 85 CFATTACH_DECL_NEW(irframe, sizeof(struct irframe_softc), 86 irframe_match, irframe_attach, irframe_detach, irframe_activate); 87 88 extern struct cfdriver irframe_cd; 89 90 #define IRFRAMEUNIT(dev) (minor(dev)) 91 92 int 93 irframe_match(device_t parent, cfdata_t match, void *aux) 94 { 95 struct ir_attach_args *ia = aux; 96 97 return (ia->ia_type == IR_TYPE_IRFRAME); 98 } 99 100 void 101 irframe_attach(device_t parent, device_t self, void *aux) 102 { 103 struct irframe_softc *sc = device_private(self); 104 struct ir_attach_args *ia = aux; 105 const char *delim; 106 int speeds = 0; 107 108 sc->sc_dev = self; 109 sc->sc_methods = ia->ia_methods; 110 sc->sc_handle = ia->ia_handle; 111 112 #ifdef DIAGNOSTIC 113 if (sc->sc_methods->im_read == NULL || 114 sc->sc_methods->im_write == NULL || 115 sc->sc_methods->im_poll == NULL || 116 sc->sc_methods->im_kqfilter == NULL || 117 sc->sc_methods->im_set_params == NULL || 118 sc->sc_methods->im_get_speeds == NULL || 119 sc->sc_methods->im_get_turnarounds == NULL) 120 panic("%s: missing methods", device_xname(self)); 121 #endif 122 123 (void)sc->sc_methods->im_get_speeds(sc->sc_handle, &speeds); 124 sc->sc_speedmask = speeds; 125 delim = ":"; 126 if (speeds & IRDA_SPEEDS_SIR) { 127 printf("%s SIR", delim); 128 delim = ","; 129 } 130 if (speeds & IRDA_SPEEDS_MIR) { 131 printf("%s MIR", delim); 132 delim = ","; 133 } 134 if (speeds & IRDA_SPEEDS_FIR) { 135 printf("%s FIR", delim); 136 delim = ","; 137 } 138 if (speeds & IRDA_SPEEDS_VFIR) { 139 printf("%s VFIR", delim); 140 delim = ","; 141 } 142 printf("\n"); 143 } 144 145 int 146 irframe_activate(device_t self, enum devact act) 147 { 148 /*struct irframe_softc *sc = device_private(self);*/ 149 150 switch (act) { 151 case DVACT_ACTIVATE: 152 return (EOPNOTSUPP); 153 154 case DVACT_DEACTIVATE: 155 break; 156 } 157 return (0); 158 } 159 160 int 161 irframe_detach(device_t self, int flags) 162 { 163 /*struct irframe_softc *sc = device_private(self);*/ 164 int maj, mn; 165 166 /* XXX needs reference count */ 167 168 /* locate the major number */ 169 maj = cdevsw_lookup_major(&irframe_cdevsw); 170 171 /* Nuke the vnodes for any open instances (calls close). */ 172 mn = device_unit(self); 173 vdevgone(maj, mn, mn, VCHR); 174 175 return (0); 176 } 177 178 int 179 irframeopen(dev_t dev, int flag, int mode, struct lwp *l) 180 { 181 struct irframe_softc *sc; 182 int error; 183 184 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 185 if (sc == NULL) 186 return (ENXIO); 187 if (!device_is_active(sc->sc_dev)) 188 return (EIO); 189 if (sc->sc_open) 190 return (EBUSY); 191 if (sc->sc_methods->im_open != NULL) { 192 error = sc->sc_methods->im_open(sc->sc_handle, flag, mode, l); 193 if (error) 194 return (error); 195 } 196 sc->sc_open = 1; 197 #ifdef DIAGNOSTIC 198 sc->sc_speed = IRDA_DEFAULT_SPEED; 199 #endif 200 (void)irf_reset_params(sc); 201 return (0); 202 } 203 204 int 205 irframeclose(dev_t dev, int flag, int mode, struct lwp *l) 206 { 207 struct irframe_softc *sc; 208 int error; 209 210 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 211 if (sc == NULL) 212 return (ENXIO); 213 sc->sc_open = 0; 214 if (sc->sc_methods->im_close != NULL) 215 error = sc->sc_methods->im_close(sc->sc_handle, flag, mode, l); 216 else 217 error = 0; 218 return (error); 219 } 220 221 int 222 irframeread(dev_t dev, struct uio *uio, int flag) 223 { 224 struct irframe_softc *sc; 225 226 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 227 if (sc == NULL) 228 return (ENXIO); 229 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 230 return (EIO); 231 if (uio->uio_resid < sc->sc_params.maxsize) { 232 #ifdef DIAGNOSTIC 233 printf("irframeread: short read %ld < %d\n", 234 (long)uio->uio_resid, sc->sc_params.maxsize); 235 #endif 236 return (EINVAL); 237 } 238 return (sc->sc_methods->im_read(sc->sc_handle, uio, flag)); 239 } 240 241 int 242 irframewrite(dev_t dev, struct uio *uio, int flag) 243 { 244 struct irframe_softc *sc; 245 246 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 247 if (sc == NULL) 248 return (ENXIO); 249 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 250 return (EIO); 251 if (uio->uio_resid > sc->sc_params.maxsize) { 252 #ifdef DIAGNOSTIC 253 printf("irframeread: long write %ld > %d\n", 254 (long)uio->uio_resid, sc->sc_params.maxsize); 255 #endif 256 return (EINVAL); 257 } 258 return (sc->sc_methods->im_write(sc->sc_handle, uio, flag)); 259 } 260 261 int 262 irf_set_params(struct irframe_softc *sc, struct irda_params *p) 263 { 264 int error; 265 266 DPRINTF(("irf_set_params: set params speed=%u ebofs=%u maxsize=%u " 267 "speedmask=0x%x\n", p->speed, p->ebofs, p->maxsize, 268 sc->sc_speedmask)); 269 270 if (p->maxsize > IRDA_MAX_FRAME_SIZE) { 271 #ifdef IRFRAME_DEBUG 272 printf("irf_set_params: bad maxsize=%u\n", p->maxsize); 273 #endif 274 return (EINVAL); 275 } 276 277 if (p->ebofs > IRDA_MAX_EBOFS) { 278 #ifdef IRFRAME_DEBUG 279 printf("irf_set_params: bad maxsize=%u\n", p->maxsize); 280 #endif 281 return (EINVAL); 282 } 283 284 #define CONC(x,y) x##y 285 #define CASE(s) case s: if (!(sc->sc_speedmask & CONC(IRDA_SPEED_,s))) return (EINVAL); break 286 switch (p->speed) { 287 CASE(2400); 288 CASE(9600); 289 CASE(19200); 290 CASE(38400); 291 CASE(57600); 292 CASE(115200); 293 CASE(576000); 294 CASE(1152000); 295 CASE(4000000); 296 CASE(16000000); 297 default: return (EINVAL); 298 } 299 #undef CONC 300 #undef CASE 301 302 error = sc->sc_methods->im_set_params(sc->sc_handle, p); 303 if (!error) { 304 sc->sc_params = *p; 305 DPRINTF(("irf_set_params: ok\n")); 306 #ifdef DIAGNOSTIC 307 if (p->speed != sc->sc_speed) { 308 sc->sc_speed = p->speed; 309 aprint_verbose_dev(sc->sc_dev, "set speed %u\n", 310 sc->sc_speed); 311 } 312 #endif 313 } else { 314 #ifdef IRFRAME_DEBUG 315 printf("irf_set_params: error=%d\n", error); 316 #endif 317 } 318 return (error); 319 } 320 321 int 322 irf_reset_params(struct irframe_softc *sc) 323 { 324 struct irda_params params; 325 326 params.speed = IRDA_DEFAULT_SPEED; 327 params.ebofs = IRDA_DEFAULT_EBOFS; 328 params.maxsize = IRDA_DEFAULT_SIZE; 329 return (irf_set_params(sc, ¶ms)); 330 } 331 332 int 333 irframeioctl(dev_t dev, u_long cmd, void *addr, int flag, 334 struct lwp *l) 335 { 336 struct irframe_softc *sc; 337 void *vaddr = addr; 338 int error; 339 340 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 341 if (sc == NULL) 342 return (ENXIO); 343 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 344 return (EIO); 345 346 switch (cmd) { 347 case FIONBIO: 348 /* All handled in the upper FS layer. */ 349 error = 0; 350 break; 351 352 case IRDA_SET_PARAMS: 353 error = irf_set_params(sc, vaddr); 354 break; 355 356 case IRDA_RESET_PARAMS: 357 error = irf_reset_params(sc); 358 break; 359 360 case IRDA_GET_SPEEDMASK: 361 error = sc->sc_methods->im_get_speeds(sc->sc_handle, vaddr); 362 break; 363 364 case IRDA_GET_TURNAROUNDMASK: 365 error = sc->sc_methods->im_get_turnarounds(sc->sc_handle,vaddr); 366 break; 367 368 default: 369 error = EINVAL; 370 break; 371 } 372 return (error); 373 } 374 375 int 376 irframepoll(dev_t dev, int events, struct lwp *l) 377 { 378 struct irframe_softc *sc; 379 380 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 381 if (sc == NULL) 382 return (POLLHUP); 383 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 384 return (POLLHUP); 385 386 return (sc->sc_methods->im_poll(sc->sc_handle, events, l)); 387 } 388 389 int 390 irframekqfilter(dev_t dev, struct knote *kn) 391 { 392 struct irframe_softc *sc; 393 394 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 395 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 396 return (1); 397 398 return (sc->sc_methods->im_kqfilter(sc->sc_handle, kn)); 399 } 400