irframe.c revision 1.1
1 /* $NetBSD: irframe.c,v 1.1 2001/12/02 10:44:43 augustss 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 * 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/param.h> 40 #include <sys/systm.h> 41 #include <sys/ioctl.h> 42 #include <sys/kernel.h> 43 #include <sys/device.h> 44 #include <sys/conf.h> 45 #include <sys/malloc.h> 46 #include <sys/poll.h> 47 #include <sys/select.h> 48 #include <sys/vnode.h> 49 50 #include <dev/ir/ir.h> 51 #include <dev/ir/irdaio.h> 52 #include <dev/ir/irframevar.h> 53 54 cdev_decl(irframe); 55 56 int irframe_match(struct device *parent, struct cfdata *match, void *aux); 57 void irframe_attach(struct device *parent, struct device *self, void *aux); 58 int irframe_activate(struct device *self, enum devact act); 59 int irframe_detach(struct device *self, int flags); 60 61 struct cfattach irframe_ca = { 62 sizeof(struct irframe_softc), irframe_match, irframe_attach, 63 irframe_detach, irframe_activate 64 }; 65 66 extern struct cfattach irframe_ca; 67 extern struct cfdriver irframe_cd; 68 69 #define IRFRAMEUNIT(dev) (minor(dev)) 70 71 int 72 irframe_match(struct device *parent, struct cfdata *match, void *aux) 73 { 74 struct ir_attach_args *ia = aux; 75 76 return (ia->ia_type == IR_TYPE_IRFRAME); 77 } 78 79 void 80 irframe_attach(struct device *parent, struct device *self, void *aux) 81 { 82 struct irframe_softc *sc = (struct irframe_softc *)self; 83 struct ir_attach_args *ia = aux; 84 const char *delim; 85 int speeds = 0; 86 87 sc->sc_methods = ia->ia_methods; 88 sc->sc_handle = ia->ia_handle; 89 90 #ifdef DIAGNOSTIC 91 if (sc->sc_methods->im_read == NULL || 92 sc->sc_methods->im_write == NULL || 93 sc->sc_methods->im_set_params == NULL || 94 sc->sc_methods->im_reset_params == NULL || 95 sc->sc_methods->im_get_speeds == NULL || 96 sc->sc_methods->im_get_turnarounds == NULL) 97 panic("%s: missing methods\n", sc->sc_dev.dv_xname); 98 #endif 99 100 (void)sc->sc_methods->im_get_speeds(sc->sc_handle, &speeds); 101 delim = ":"; 102 if (speeds & IRDA_SPEEDS_SIR) { 103 printf("%s SIR", delim); 104 delim = ","; 105 } 106 if (speeds & IRDA_SPEEDS_MIR) { 107 printf("%s MIR", delim); 108 delim = ","; 109 } 110 if (speeds & IRDA_SPEEDS_FIR) { 111 printf("%s FIR", delim); 112 delim = ","; 113 } 114 if (speeds & IRDA_SPEEDS_VFIR) { 115 printf("%s VFIR", delim); 116 delim = ","; 117 } 118 printf("\n"); 119 } 120 121 int 122 irframe_activate(struct device *self, enum devact act) 123 { 124 /*struct irframe_softc *sc = (struct irframe_softc *)self;*/ 125 126 switch (act) { 127 case DVACT_ACTIVATE: 128 return (EOPNOTSUPP); 129 break; 130 131 case DVACT_DEACTIVATE: 132 break; 133 } 134 return (0); 135 } 136 137 int 138 irframe_detach(struct device *self, int flags) 139 { 140 /*struct irframe_softc *sc = (struct irframe_softc *)self;*/ 141 int maj, mn; 142 143 /* locate the major number */ 144 for (maj = 0; maj < nchrdev; maj++) 145 if (cdevsw[maj].d_open == irframeopen) 146 break; 147 148 /* Nuke the vnodes for any open instances (calls close). */ 149 mn = self->dv_unit; 150 vdevgone(maj, mn, mn, VCHR); 151 152 return (0); 153 } 154 155 int 156 irframeopen(dev_t dev, int flag, int mode, struct proc *p) 157 { 158 struct irframe_softc *sc; 159 int error; 160 161 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 162 if (sc == NULL) 163 return (ENXIO); 164 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 165 return (EIO); 166 if (sc->sc_open) 167 return (EBUSY); 168 if (sc->sc_methods->im_open != NULL) { 169 error = sc->sc_methods->im_open(sc->sc_handle, flag, mode, p); 170 if (error) 171 return (error); 172 } 173 sc->sc_open = 1; 174 return (0); 175 } 176 177 int 178 irframeclose(dev_t dev, int flag, int mode, struct proc *p) 179 { 180 struct irframe_softc *sc; 181 int error; 182 183 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 184 if (sc == NULL) 185 return (ENXIO); 186 if (sc->sc_methods->im_close != NULL) 187 error = sc->sc_methods->im_close(sc->sc_handle, flag, mode, p); 188 else 189 error = 0; 190 sc->sc_open = 0; 191 return (error); 192 } 193 194 int 195 irframeread(dev_t dev, struct uio *uio, int flag) 196 { 197 struct irframe_softc *sc; 198 199 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 200 if (sc == NULL) 201 return (ENXIO); 202 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 203 return (EIO); 204 return (sc->sc_methods->im_read(sc->sc_handle, uio, flag)); 205 } 206 207 int 208 irframewrite(dev_t dev, struct uio *uio, int flag) 209 { 210 struct irframe_softc *sc; 211 u_int8_t buf[MAX_IRDA_FRAME]; 212 size_t n; 213 int error; 214 215 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 216 if (sc == NULL) 217 return (ENXIO); 218 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 219 return (EIO); 220 n = uio->uio_resid; 221 if (n > MAX_IRDA_FRAME) 222 return (EINVAL); 223 error = uiomove(buf, n, uio); 224 if (error) 225 return (error); 226 return (sc->sc_methods->im_write(sc->sc_handle, buf, n)); 227 } 228 229 int 230 irframeioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 231 { 232 struct irframe_softc *sc; 233 int error; 234 235 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 236 if (sc == NULL) 237 return (ENXIO); 238 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 239 return (EIO); 240 241 switch (cmd) { 242 case FIONBIO: 243 /* All handled in the upper FS layer. */ 244 error = 0; 245 break; 246 247 case IRDA_SET_PARAMS: 248 error = sc->sc_methods->im_set_params(sc->sc_handle, 249 (void *)addr); 250 break; 251 252 case IRDA_RESET_PARAMS: 253 error = sc->sc_methods->im_reset_params(sc->sc_handle); 254 break; 255 256 case IRDA_GET_SPEEDMASK: 257 error = sc->sc_methods->im_get_speeds(sc->sc_handle, 258 (int *)addr); 259 break; 260 261 case IRDA_GET_TURNAROUNDMASK: 262 error = sc->sc_methods->im_get_turnarounds(sc->sc_handle, 263 (int *)addr); 264 break; 265 266 default: 267 error = EINVAL; 268 break; 269 } 270 return (error); 271 } 272 273 int 274 irframepoll(dev_t dev, int events, struct proc *p) 275 { 276 struct irframe_softc *sc; 277 int revents; 278 int s; 279 280 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 281 if (sc == NULL) 282 return (ENXIO); 283 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 284 return (EIO); 285 286 revents = 0; 287 s = splir(); 288 if (events & (POLLIN | POLLRDNORM)) 289 if (sc->sc_rdframes > 0) 290 revents |= events & (POLLIN | POLLRDNORM); 291 292 #if 0 293 /* How about write? */ 294 if (events & (POLLOUT | POLLWRNORM)) 295 if (???) 296 revents |= events & (POLLOUT | POLLWRNORM); 297 #endif 298 299 if (revents == 0) { 300 if (events & (POLLIN | POLLRDNORM)) 301 selrecord(p, &sc->sc_rdsel); 302 303 #if 0 304 if (events & (POLLOUT | POLLWRNORM)) 305 selrecord(p, &sc->sc_wrsel); 306 #endif 307 } 308 309 splx(s); 310 return (revents); 311 } 312 313 void 314 irframe_frame_available(struct device *dev) 315 { 316 struct irframe_softc *sc = (struct irframe_softc *)dev; 317 int s; 318 319 s = splir(); 320 sc->sc_rdframes++; 321 selwakeup(&sc->sc_rdsel); 322 splx(s); 323 } 324 325 /*********/ 326 327 328 struct device * 329 irframe_alloc(size_t size, struct irframe_methods *m, void *h) 330 { 331 struct cfdriver *cd = &irframe_cd; 332 struct device *dev; 333 int unit; 334 335 for (unit = 0; unit < cd->cd_ndevs; unit++) 336 if (cd->cd_devs[unit] == NULL) 337 break; 338 dev = malloc(size, M_DEVBUF, M_WAITOK); 339 memset(dev, 0, size); 340 snprintf(dev->dv_xname, sizeof dev->dv_xname, "irframe%d", unit); 341 dev->dv_unit = unit; 342 dev->dv_flags = DVF_ACTIVE; /* always initially active */ 343 344 config_makeroom(unit, cd); 345 cd->cd_devs[unit] = dev; 346 347 return (dev); 348 } 349 350 void 351 irframe_dealloc(struct device *dev) 352 { 353 struct cfdriver *cd = &irframe_cd; 354 int unit; 355 356 for (unit = 0; unit < cd->cd_ndevs; unit++) { 357 if (cd->cd_devs[unit] == dev) { 358 cd->cd_devs[unit] = NULL; 359 free(dev, M_DEVBUF); 360 return; 361 } 362 } 363 panic("irframe_dealloc: device not found\n"); 364 } 365
Indexes created Wed Sep 24 05:09:52 GMT 2025