irframe.c revision 1.2
1 /* $NetBSD: irframe.c,v 1.2 2001/12/02 16:29:25 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; 211 212 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 213 if (sc == NULL) 214 return (ENXIO); 215 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 216 return (EIO); 217 return (sc->sc_methods->im_write(sc->sc_handle, uio, flag)); 218 } 219 220 int 221 irframeioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 222 { 223 struct irframe_softc *sc; 224 void *vaddr = addr; 225 int error; 226 227 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 228 if (sc == NULL) 229 return (ENXIO); 230 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 231 return (EIO); 232 233 switch (cmd) { 234 case FIONBIO: 235 /* All handled in the upper FS layer. */ 236 error = 0; 237 break; 238 239 case IRDA_SET_PARAMS: 240 error = sc->sc_methods->im_set_params(sc->sc_handle, vaddr); 241 break; 242 243 case IRDA_RESET_PARAMS: 244 error = sc->sc_methods->im_reset_params(sc->sc_handle); 245 break; 246 247 case IRDA_GET_SPEEDMASK: 248 error = sc->sc_methods->im_get_speeds(sc->sc_handle, vaddr); 249 break; 250 251 case IRDA_GET_TURNAROUNDMASK: 252 error = sc->sc_methods->im_get_turnarounds(sc->sc_handle,vaddr); 253 break; 254 255 default: 256 error = EINVAL; 257 break; 258 } 259 return (error); 260 } 261 262 int 263 irframepoll(dev_t dev, int events, struct proc *p) 264 { 265 struct irframe_softc *sc; 266 267 sc = device_lookup(&irframe_cd, IRFRAMEUNIT(dev)); 268 if (sc == NULL) 269 return (ENXIO); 270 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 271 return (EIO); 272 273 if (sc->sc_methods->im_poll != NULL) 274 return (sc->sc_methods->im_poll(sc->sc_handle, events, p)); 275 else 276 return (0); 277 } 278 279 void 280 irframe_frame_available(struct device *dev) 281 { 282 struct irframe_softc *sc = (struct irframe_softc *)dev; 283 int s; 284 285 s = splir(); 286 sc->sc_rdframes++; 287 selwakeup(&sc->sc_rdsel); 288 splx(s); 289 } 290 291 /*********/ 292 293 294 struct device * 295 irframe_alloc(size_t size, struct irframe_methods *m, void *h) 296 { 297 struct cfdriver *cd = &irframe_cd; 298 struct device *dev; 299 int unit; 300 301 for (unit = 0; unit < cd->cd_ndevs; unit++) 302 if (cd->cd_devs[unit] == NULL) 303 break; 304 dev = malloc(size, M_DEVBUF, M_WAITOK); 305 memset(dev, 0, size); 306 snprintf(dev->dv_xname, sizeof dev->dv_xname, "irframe%d", unit); 307 dev->dv_unit = unit; 308 dev->dv_flags = DVF_ACTIVE; /* always initially active */ 309 310 config_makeroom(unit, cd); 311 cd->cd_devs[unit] = dev; 312 313 return (dev); 314 } 315 316 void 317 irframe_dealloc(struct device *dev) 318 { 319 struct cfdriver *cd = &irframe_cd; 320 int unit; 321 322 for (unit = 0; unit < cd->cd_ndevs; unit++) { 323 if (cd->cd_devs[unit] == dev) { 324 cd->cd_devs[unit] = NULL; 325 free(dev, M_DEVBUF); 326 return; 327 } 328 } 329 panic("irframe_dealloc: device not found\n"); 330 } 331
Indexes created Wed Sep 24 22:09:59 GMT 2025