irframe.c revision 1.45
1 /* $NetBSD: irframe.c,v 1.45 2014/03/16 05:20:28 dholland 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 (at) 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 1.45 2014/03/16 05:20:28 dholland 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 .d_open = irframeopen, 71 .d_close = irframeclose, 72 .d_read = irframeread, 73 .d_write = irframewrite, 74 .d_ioctl = irframeioctl, 75 .d_stop = nostop, 76 .d_tty = notty, 77 .d_poll = irframepoll, 78 .d_mmap = nommap, 79 .d_kqfilter = irframekqfilter, 80 .d_flag = D_OTHER 81 }; 82 83 int irframe_match(device_t parent, cfdata_t match, void *aux); 84 85 Static int irf_set_params(struct irframe_softc *sc, struct irda_params *p); 86 Static int irf_reset_params(struct irframe_softc *sc); 87 88 #if NIRFRAME == 0 89 /* In case we just have tty attachment. */ 90 CFDRIVER_DECL(irframe, DV_DULL, NULL); 91 #endif 92 93 CFATTACH_DECL_NEW(irframe, sizeof(struct irframe_softc), 94 irframe_match, irframe_attach, irframe_detach, NULL); 95 96 extern struct cfdriver irframe_cd; 97 98 #define IRFRAMEUNIT(dev) (minor(dev)) 99 100 int 101 irframe_match(device_t parent, cfdata_t match, 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(device_t parent, device_t 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_dev = self; 117 sc->sc_methods = ia->ia_methods; 118 sc->sc_handle = ia->ia_handle; 119 120 #ifdef DIAGNOSTIC 121 if (sc->sc_methods->im_read == NULL || 122 sc->sc_methods->im_write == NULL || 123 sc->sc_methods->im_poll == NULL || 124 sc->sc_methods->im_kqfilter == NULL || 125 sc->sc_methods->im_set_params == NULL || 126 sc->sc_methods->im_get_speeds == NULL || 127 sc->sc_methods->im_get_turnarounds == NULL) 128 panic("%s: missing methods", device_xname(self)); 129 #endif 130 131 (void)sc->sc_methods->im_get_speeds(sc->sc_handle, &speeds); 132 sc->sc_speedmask = speeds; 133 delim = ":"; 134 if (speeds & IRDA_SPEEDS_SIR) { 135 printf("%s SIR", delim); 136 delim = ","; 137 } 138 if (speeds & IRDA_SPEEDS_MIR) { 139 printf("%s MIR", delim); 140 delim = ","; 141 } 142 if (speeds & IRDA_SPEEDS_FIR) { 143 printf("%s FIR", delim); 144 delim = ","; 145 } 146 if (speeds & IRDA_SPEEDS_VFIR) { 147 printf("%s VFIR", delim); 148 delim = ","; 149 } 150 printf("\n"); 151 152 if (!pmf_device_register(self, NULL, NULL)) 153 aprint_error_dev(self, "couldn't establish power handler\n"); 154 } 155 156 int 157 irframe_detach(device_t self, int flags) 158 { 159 /*struct irframe_softc *sc = device_private(self);*/ 160 int maj, mn; 161 162 pmf_device_deregister(self); 163 164 /* XXX needs reference count */ 165 166 /* locate the major number */ 167 maj = cdevsw_lookup_major(&irframe_cdevsw); 168 169 /* Nuke the vnodes for any open instances (calls close). */ 170 mn = device_unit(self); 171 vdevgone(maj, mn, mn, VCHR); 172 173 return (0); 174 } 175 176 int 177 irframeopen(dev_t dev, int flag, int mode, struct lwp *l) 178 { 179 struct irframe_softc *sc; 180 int error; 181 182 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 183 if (sc == NULL) 184 return (ENXIO); 185 if (!device_is_active(sc->sc_dev)) 186 return (EIO); 187 if (sc->sc_open) 188 return (EBUSY); 189 if (sc->sc_methods->im_open != NULL) { 190 error = sc->sc_methods->im_open(sc->sc_handle, flag, mode, l); 191 if (error) 192 return (error); 193 } 194 sc->sc_open = 1; 195 #ifdef DIAGNOSTIC 196 sc->sc_speed = IRDA_DEFAULT_SPEED; 197 #endif 198 (void)irf_reset_params(sc); 199 return (0); 200 } 201 202 int 203 irframeclose(dev_t dev, int flag, int mode, struct lwp *l) 204 { 205 struct irframe_softc *sc; 206 int error; 207 208 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 209 if (sc == NULL) 210 return (ENXIO); 211 sc->sc_open = 0; 212 if (sc->sc_methods->im_close != NULL) 213 error = sc->sc_methods->im_close(sc->sc_handle, flag, mode, l); 214 else 215 error = 0; 216 return (error); 217 } 218 219 int 220 irframeread(dev_t dev, struct uio *uio, int flag) 221 { 222 struct irframe_softc *sc; 223 224 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 225 if (sc == NULL) 226 return (ENXIO); 227 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 228 return (EIO); 229 if (uio->uio_resid < sc->sc_params.maxsize) { 230 #ifdef DIAGNOSTIC 231 printf("irframeread: short read %ld < %d\n", 232 (long)uio->uio_resid, sc->sc_params.maxsize); 233 #endif 234 return (EINVAL); 235 } 236 return (sc->sc_methods->im_read(sc->sc_handle, uio, flag)); 237 } 238 239 int 240 irframewrite(dev_t dev, struct uio *uio, int flag) 241 { 242 struct irframe_softc *sc; 243 244 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 245 if (sc == NULL) 246 return (ENXIO); 247 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 248 return (EIO); 249 if (uio->uio_resid > sc->sc_params.maxsize) { 250 #ifdef DIAGNOSTIC 251 printf("irframeread: long write %ld > %d\n", 252 (long)uio->uio_resid, sc->sc_params.maxsize); 253 #endif 254 return (EINVAL); 255 } 256 return (sc->sc_methods->im_write(sc->sc_handle, uio, flag)); 257 } 258 259 int 260 irf_set_params(struct irframe_softc *sc, struct irda_params *p) 261 { 262 int error; 263 264 DPRINTF(("irf_set_params: set params speed=%u ebofs=%u maxsize=%u " 265 "speedmask=0x%x\n", p->speed, p->ebofs, p->maxsize, 266 sc->sc_speedmask)); 267 268 if (p->maxsize > IRDA_MAX_FRAME_SIZE) { 269 #ifdef IRFRAME_DEBUG 270 printf("irf_set_params: bad maxsize=%u\n", p->maxsize); 271 #endif 272 return (EINVAL); 273 } 274 275 if (p->ebofs > IRDA_MAX_EBOFS) { 276 #ifdef IRFRAME_DEBUG 277 printf("irf_set_params: bad maxsize=%u\n", p->maxsize); 278 #endif 279 return (EINVAL); 280 } 281 282 #define CONC(x,y) x##y 283 #define CASE(s) case s: if (!(sc->sc_speedmask & CONC(IRDA_SPEED_,s))) return (EINVAL); break 284 switch (p->speed) { 285 CASE(2400); 286 CASE(9600); 287 CASE(19200); 288 CASE(38400); 289 CASE(57600); 290 CASE(115200); 291 CASE(576000); 292 CASE(1152000); 293 CASE(4000000); 294 CASE(16000000); 295 default: return (EINVAL); 296 } 297 #undef CONC 298 #undef CASE 299 300 error = sc->sc_methods->im_set_params(sc->sc_handle, p); 301 if (!error) { 302 sc->sc_params = *p; 303 DPRINTF(("irf_set_params: ok\n")); 304 #ifdef DIAGNOSTIC 305 if (p->speed != sc->sc_speed) { 306 sc->sc_speed = p->speed; 307 aprint_verbose_dev(sc->sc_dev, "set speed %u\n", 308 sc->sc_speed); 309 } 310 #endif 311 } else { 312 #ifdef IRFRAME_DEBUG 313 printf("irf_set_params: error=%d\n", error); 314 #endif 315 } 316 return (error); 317 } 318 319 int 320 irf_reset_params(struct irframe_softc *sc) 321 { 322 struct irda_params params; 323 324 params.speed = IRDA_DEFAULT_SPEED; 325 params.ebofs = IRDA_DEFAULT_EBOFS; 326 params.maxsize = IRDA_DEFAULT_SIZE; 327 return (irf_set_params(sc, ¶ms)); 328 } 329 330 int 331 irframeioctl(dev_t dev, u_long cmd, void *addr, int flag, 332 struct lwp *l) 333 { 334 struct irframe_softc *sc; 335 void *vaddr = addr; 336 int error; 337 338 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 339 if (sc == NULL) 340 return (ENXIO); 341 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 342 return (EIO); 343 344 switch (cmd) { 345 case FIONBIO: 346 /* All handled in the upper FS layer. */ 347 error = 0; 348 break; 349 350 case IRDA_SET_PARAMS: 351 error = irf_set_params(sc, vaddr); 352 break; 353 354 case IRDA_RESET_PARAMS: 355 error = irf_reset_params(sc); 356 break; 357 358 case IRDA_GET_SPEEDMASK: 359 error = sc->sc_methods->im_get_speeds(sc->sc_handle, vaddr); 360 break; 361 362 case IRDA_GET_TURNAROUNDMASK: 363 error = sc->sc_methods->im_get_turnarounds(sc->sc_handle,vaddr); 364 break; 365 366 default: 367 error = EINVAL; 368 break; 369 } 370 return (error); 371 } 372 373 int 374 irframepoll(dev_t dev, int events, struct lwp *l) 375 { 376 struct irframe_softc *sc; 377 378 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 379 if (sc == NULL) 380 return (POLLHUP); 381 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 382 return (POLLHUP); 383 384 return (sc->sc_methods->im_poll(sc->sc_handle, events, l)); 385 } 386 387 int 388 irframekqfilter(dev_t dev, struct knote *kn) 389 { 390 struct irframe_softc *sc; 391 392 sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); 393 if (!device_is_active(sc->sc_dev) || !sc->sc_open) 394 return (1); 395 396 return (sc->sc_methods->im_kqfilter(sc->sc_handle, kn)); 397 } 398
Indexes created Fri Sep 26 20:09:58 GMT 2025