1 /* $NetBSD: irframe.c,v 1.39 2007/03/06 20:45:59 drochner 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: irframe.c,v 1.39 2007/03/06 20:45:59 drochner Exp $"); 41 42 #include "irframe.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/ioctl.h> 47 #include <sys/kernel.h> 48 #include <sys/device.h> 49 #include <sys/conf.h> 50 #include <sys/malloc.h> 51 #include <sys/poll.h> 52 #include <sys/select.h> 53 #include <sys/vnode.h> 54 55 #include <dev/ir/ir.h> 56 #include <dev/ir/irdaio.h> 57 #include <dev/ir/irframevar.h> 58 59 #ifdef IRFRAME_DEBUG 60 #define DPRINTF(x) if (irframedebug) printf x 61 #define Static 62 int irframedebug = 0; 63 #else 64 #define DPRINTF(x) 65 #define Static static 66 #endif 67 68 dev_type_open(irframeopen); 69 dev_type_close(irframeclose); 70 dev_type_read(irframeread); 71 dev_type_write(irframewrite); 72 dev_type_ioctl(irframeioctl); 73 dev_type_poll(irframepoll); 74 dev_type_kqfilter(irframekqfilter); 75 76 const struct cdevsw irframe_cdevsw = { 77 irframeopen, irframeclose, irframeread, irframewrite, irframeioctl, 78 nostop, notty, irframepoll, nommap, irframekqfilter, D_OTHER, 79 }; 80 81 int irframe_match(struct device *parent, struct cfdata *match, void *aux); 82 int irframe_activate(struct device *self, enum devact act); 83 84 Static int irf_set_params(struct irframe_softc *sc, struct irda_params *p); 85 Static int irf_reset_params(struct irframe_softc *sc); 86 87 #if NIRFRAME == 0 88 /* In case we just have tty attachment. */ 89 CFDRIVER_DECL(irframe, DV_DULL, NULL); 90 #endif 91 92 CFATTACH_DECL(irframe, sizeof(struct irframe_softc), 93 irframe_match, irframe_attach, irframe_detach, irframe_activate); 94 95 extern struct cfdriver irframe_cd; 96 97 #define IRFRAMEUNIT(dev) (minor(dev)) 98 99 int 100 irframe_match(struct device *parent, struct cfdata *match, 101 void *aux) 102 { 103 struct ir_attach_args *ia = aux; 104 105 return (ia->ia_type == IR_TYPE_IRFRAME); 106 } 107 108 void 109 irframe_attach(struct device *parent, struct device *self, void *aux) 110 { 111 struct irframe_softc *sc = device_private(self); 112 struct ir_attach_args *ia = aux; 113 const char *delim; 114 int speeds = 0; 115 116 sc->sc_methods = ia->ia_methods; 117 sc->sc_handle = ia->ia_handle; 118 119 #ifdef DIAGNOSTIC 120 if (sc->sc_methods->im_read == NULL || 121 sc->sc_methods->im_write == NULL || 122 sc->sc_methods->im_poll == NULL || 123 sc->sc_methods->im_kqfilter == NULL || 124 sc->sc_methods->im_set_params == NULL || 125 sc->sc_methods->im_get_speeds == NULL || 126 sc->sc_methods->im_get_turnarounds == NULL) 127 panic("%s: missing methods", sc->sc_dev.dv_xname); 128 #endif 129 130 (void)sc->sc_methods->im_get_speeds(sc->sc_handle, &speeds); 131 sc->sc_speedmask = speeds; 132 delim = ":"; 133 if (speeds & IRDA_SPEEDS_SIR) { 134 printf("%s SIR", delim); 135 delim = ","; 136 } 137 if (speeds & IRDA_SPEEDS_MIR) { 138 printf("%s MIR", delim); 139 delim = ","; 140 } 141 if (speeds & IRDA_SPEEDS_FIR) { 142 printf("%s FIR", delim); 143 delim = ","; 144 } 145 if (speeds & IRDA_SPEEDS_VFIR) { 146 printf("%s VFIR", delim); 147 delim = ","; 148 } 149 printf("\n"); 150 } 151 152 int 153 irframe_activate(struct device *self, enum devact act) 154 { 155 /*struct irframe_softc *sc = device_private(self);*/ 156 157 switch (act) { 158 case DVACT_ACTIVATE: 159 return (EOPNOTSUPP); 160 161 case DVACT_DEACTIVATE: 162 break; 163 } 164 return (0); 165 } 166 167 int 168 irframe_detach(struct device *self, int flags) 169 { 170 /*struct irframe_softc *sc = device_private(self);*/ 171 int maj, mn; 172 173 /* XXX needs reference count */ 174 175 /* locate the major number */ 176 maj = cdevsw_lookup_major(&irframe_cdevsw); 177 178 /* Nuke the vnodes for any open instances (calls close). */ 179 mn = device_unit(self); 180 vdevgone(maj, mn, mn, VCHR); 181 182 return (0); 183 } 184 185 int 186 irframeopen(dev_t dev, int flag, int mode, struct lwp *l) 187 { 188 struct irframe_softc *sc; 189 int error; 190 191 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 192 if (sc == NULL) 193 return (ENXIO); 194 if (!device_is_active(&sc->sc_dev)) 195 return (EIO); 196 if (sc->sc_open) 197 return (EBUSY); 198 if (sc->sc_methods->im_open != NULL) { 199 error = sc->sc_methods->im_open(sc->sc_handle, flag, mode, l); 200 if (error) 201 return (error); 202 } 203 sc->sc_open = 1; 204 #ifdef DIAGNOSTIC 205 sc->sc_speed = IRDA_DEFAULT_SPEED; 206 #endif 207 (void)irf_reset_params(sc); 208 return (0); 209 } 210 211 int 212 irframeclose(dev_t dev, int flag, int mode, struct lwp *l) 213 { 214 struct irframe_softc *sc; 215 int error; 216 217 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 218 if (sc == NULL) 219 return (ENXIO); 220 sc->sc_open = 0; 221 if (sc->sc_methods->im_close != NULL) 222 error = sc->sc_methods->im_close(sc->sc_handle, flag, mode, l); 223 else 224 error = 0; 225 return (error); 226 } 227 228 int 229 irframeread(dev_t dev, struct uio *uio, int flag) 230 { 231 struct irframe_softc *sc; 232 233 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 234 if (sc == NULL) 235 return (ENXIO); 236 if (!device_is_active(&sc->sc_dev) || !sc->sc_open) 237 return (EIO); 238 if (uio->uio_resid < sc->sc_params.maxsize) { 239 #ifdef DIAGNOSTIC 240 printf("irframeread: short read %ld < %d\n", 241 (long)uio->uio_resid, sc->sc_params.maxsize); 242 #endif 243 return (EINVAL); 244 } 245 return (sc->sc_methods->im_read(sc->sc_handle, uio, flag)); 246 } 247 248 int 249 irframewrite(dev_t dev, struct uio *uio, int flag) 250 { 251 struct irframe_softc *sc; 252 253 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 254 if (sc == NULL) 255 return (ENXIO); 256 if (!device_is_active(&sc->sc_dev) || !sc->sc_open) 257 return (EIO); 258 if (uio->uio_resid > sc->sc_params.maxsize) { 259 #ifdef DIAGNOSTIC 260 printf("irframeread: long write %ld > %d\n", 261 (long)uio->uio_resid, sc->sc_params.maxsize); 262 #endif 263 return (EINVAL); 264 } 265 return (sc->sc_methods->im_write(sc->sc_handle, uio, flag)); 266 } 267 268 int 269 irf_set_params(struct irframe_softc *sc, struct irda_params *p) 270 { 271 int error; 272 273 DPRINTF(("irf_set_params: set params speed=%u ebofs=%u maxsize=%u " 274 "speedmask=0x%x\n", p->speed, p->ebofs, p->maxsize, 275 sc->sc_speedmask)); 276 277 if (p->maxsize > IRDA_MAX_FRAME_SIZE) { 278 #ifdef IRFRAME_DEBUG 279 printf("irf_set_params: bad maxsize=%u\n", p->maxsize); 280 #endif 281 return (EINVAL); 282 } 283 284 if (p->ebofs > IRDA_MAX_EBOFS) { 285 #ifdef IRFRAME_DEBUG 286 printf("irf_set_params: bad maxsize=%u\n", p->maxsize); 287 #endif 288 return (EINVAL); 289 } 290 291 #define CONC(x,y) x##y 292 #define CASE(s) case s: if (!(sc->sc_speedmask & CONC(IRDA_SPEED_,s))) return (EINVAL); break 293 switch (p->speed) { 294 CASE(2400); 295 CASE(9600); 296 CASE(19200); 297 CASE(38400); 298 CASE(57600); 299 CASE(115200); 300 CASE(576000); 301 CASE(1152000); 302 CASE(4000000); 303 CASE(16000000); 304 default: return (EINVAL); 305 } 306 #undef CONC 307 #undef CASE 308 309 error = sc->sc_methods->im_set_params(sc->sc_handle, p); 310 if (!error) { 311 sc->sc_params = *p; 312 DPRINTF(("irf_set_params: ok\n")); 313 #ifdef DIAGNOSTIC 314 if (p->speed != sc->sc_speed) { 315 sc->sc_speed = p->speed; 316 printf("%s: set speed %u\n", sc->sc_dev.dv_xname, 317 sc->sc_speed); 318 } 319 #endif 320 } else { 321 #ifdef IRFRAME_DEBUG 322 printf("irf_set_params: error=%d\n", error); 323 #endif 324 } 325 return (error); 326 } 327 328 int 329 irf_reset_params(struct irframe_softc *sc) 330 { 331 struct irda_params params; 332 333 params.speed = IRDA_DEFAULT_SPEED; 334 params.ebofs = IRDA_DEFAULT_EBOFS; 335 params.maxsize = IRDA_DEFAULT_SIZE; 336 return (irf_set_params(sc, ¶ms)); 337 } 338 339 int 340 irframeioctl(dev_t dev, u_long cmd, void *addr, int flag, 341 struct lwp *l) 342 { 343 struct irframe_softc *sc; 344 void *vaddr = addr; 345 int error; 346 347 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 348 if (sc == NULL) 349 return (ENXIO); 350 if (!device_is_active(&sc->sc_dev) || !sc->sc_open) 351 return (EIO); 352 353 switch (cmd) { 354 case FIONBIO: 355 /* All handled in the upper FS layer. */ 356 error = 0; 357 break; 358 359 case IRDA_SET_PARAMS: 360 error = irf_set_params(sc, vaddr); 361 break; 362 363 case IRDA_RESET_PARAMS: 364 error = irf_reset_params(sc); 365 break; 366 367 case IRDA_GET_SPEEDMASK: 368 error = sc->sc_methods->im_get_speeds(sc->sc_handle, vaddr); 369 break; 370 371 case IRDA_GET_TURNAROUNDMASK: 372 error = sc->sc_methods->im_get_turnarounds(sc->sc_handle,vaddr); 373 break; 374 375 default: 376 error = EINVAL; 377 break; 378 } 379 return (error); 380 } 381 382 int 383 irframepoll(dev_t dev, int events, struct lwp *l) 384 { 385 struct irframe_softc *sc; 386 387 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 388 if (sc == NULL) 389 return (POLLHUP); 390 if (!device_is_active(&sc->sc_dev) || !sc->sc_open) 391 return (POLLHUP); 392 393 return (sc->sc_methods->im_poll(sc->sc_handle, events, l)); 394 } 395 396 int 397 irframekqfilter(dev_t dev, struct knote *kn) 398 { 399 struct irframe_softc *sc; 400 401 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 402 if (!device_is_active(&sc->sc_dev) || !sc->sc_open) 403 return (1); 404 405 return (sc->sc_methods->im_kqfilter(sc->sc_handle, kn)); 406 } 407