| 1 | /* $NetBSD: irframe.c,v 1.46 2014/07/25 08:10:37 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@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 1.46 2014/07/25 08:10:37 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_discard = nodiscard, |
| 81 | .d_flag = D_OTHER |
| 82 | }; |
| 83 | |
| 84 | int irframe_match(device_t parent, cfdata_t match, void *aux); |
| 85 | |
| 86 | Static int irf_set_params(struct irframe_softc *sc, struct irda_params *p); |
| 87 | Static int irf_reset_params(struct irframe_softc *sc); |
| 88 | |
| 89 | #if NIRFRAME == 0 |
| 90 | /* In case we just have tty attachment. */ |
| 91 | CFDRIVER_DECL(irframe, DV_DULL, NULL); |
| 92 | #endif |
| 93 | |
| 94 | CFATTACH_DECL_NEW(irframe, sizeof(struct irframe_softc), |
| 95 | irframe_match, irframe_attach, irframe_detach, NULL); |
| 96 | |
| 97 | extern struct cfdriver irframe_cd; |
| 98 | |
| 99 | #define IRFRAMEUNIT(dev) (minor(dev)) |
| 100 | |
| 101 | int |
| 102 | irframe_match(device_t parent, cfdata_t match, void *aux) |
| 103 | { |
| 104 | struct ir_attach_args *ia = aux; |
| 105 | |
| 106 | return (ia->ia_type == IR_TYPE_IRFRAME); |
| 107 | } |
| 108 | |
| 109 | void |
| 110 | irframe_attach(device_t parent, device_t self, void *aux) |
| 111 | { |
| 112 | struct irframe_softc *sc = device_private(self); |
| 113 | struct ir_attach_args *ia = aux; |
| 114 | const char *delim; |
| 115 | int speeds = 0; |
| 116 | |
| 117 | sc->sc_dev = self; |
| 118 | sc->sc_methods = ia->ia_methods; |
| 119 | sc->sc_handle = ia->ia_handle; |
| 120 | |
| 121 | #ifdef DIAGNOSTIC |
| 122 | if (sc->sc_methods->im_read == NULL || |
| 123 | sc->sc_methods->im_write == NULL || |
| 124 | sc->sc_methods->im_poll == NULL || |
| 125 | sc->sc_methods->im_kqfilter == NULL || |
| 126 | sc->sc_methods->im_set_params == NULL || |
| 127 | sc->sc_methods->im_get_speeds == NULL || |
| 128 | sc->sc_methods->im_get_turnarounds == NULL) |
| 129 | panic("%s: missing methods" , device_xname(self)); |
| 130 | #endif |
| 131 | |
| 132 | (void)sc->sc_methods->im_get_speeds(sc->sc_handle, &speeds); |
| 133 | sc->sc_speedmask = speeds; |
| 134 | delim = ":" ; |
| 135 | if (speeds & IRDA_SPEEDS_SIR) { |
| 136 | printf("%s SIR" , delim); |
| 137 | delim = "," ; |
| 138 | } |
| 139 | if (speeds & IRDA_SPEEDS_MIR) { |
| 140 | printf("%s MIR" , delim); |
| 141 | delim = "," ; |
| 142 | } |
| 143 | if (speeds & IRDA_SPEEDS_FIR) { |
| 144 | printf("%s FIR" , delim); |
| 145 | delim = "," ; |
| 146 | } |
| 147 | if (speeds & IRDA_SPEEDS_VFIR) { |
| 148 | printf("%s VFIR" , delim); |
| 149 | delim = "," ; |
| 150 | } |
| 151 | printf("\n" ); |
| 152 | |
| 153 | if (!pmf_device_register(self, NULL, NULL)) |
| 154 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 155 | } |
| 156 | |
| 157 | int |
| 158 | irframe_detach(device_t self, int flags) |
| 159 | { |
| 160 | /*struct irframe_softc *sc = device_private(self);*/ |
| 161 | int maj, mn; |
| 162 | |
| 163 | pmf_device_deregister(self); |
| 164 | |
| 165 | /* XXX needs reference count */ |
| 166 | |
| 167 | /* locate the major number */ |
| 168 | maj = cdevsw_lookup_major(&irframe_cdevsw); |
| 169 | |
| 170 | /* Nuke the vnodes for any open instances (calls close). */ |
| 171 | mn = device_unit(self); |
| 172 | vdevgone(maj, mn, mn, VCHR); |
| 173 | |
| 174 | return (0); |
| 175 | } |
| 176 | |
| 177 | int |
| 178 | irframeopen(dev_t dev, int flag, int mode, struct lwp *l) |
| 179 | { |
| 180 | struct irframe_softc *sc; |
| 181 | int error; |
| 182 | |
| 183 | sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); |
| 184 | if (sc == NULL) |
| 185 | return (ENXIO); |
| 186 | if (!device_is_active(sc->sc_dev)) |
| 187 | return (EIO); |
| 188 | if (sc->sc_open) |
| 189 | return (EBUSY); |
| 190 | if (sc->sc_methods->im_open != NULL) { |
| 191 | error = sc->sc_methods->im_open(sc->sc_handle, flag, mode, l); |
| 192 | if (error) |
| 193 | return (error); |
| 194 | } |
| 195 | sc->sc_open = 1; |
| 196 | #ifdef DIAGNOSTIC |
| 197 | sc->sc_speed = IRDA_DEFAULT_SPEED; |
| 198 | #endif |
| 199 | (void)irf_reset_params(sc); |
| 200 | return (0); |
| 201 | } |
| 202 | |
| 203 | int |
| 204 | irframeclose(dev_t dev, int flag, int mode, struct lwp *l) |
| 205 | { |
| 206 | struct irframe_softc *sc; |
| 207 | int error; |
| 208 | |
| 209 | sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); |
| 210 | if (sc == NULL) |
| 211 | return (ENXIO); |
| 212 | sc->sc_open = 0; |
| 213 | if (sc->sc_methods->im_close != NULL) |
| 214 | error = sc->sc_methods->im_close(sc->sc_handle, flag, mode, l); |
| 215 | else |
| 216 | error = 0; |
| 217 | return (error); |
| 218 | } |
| 219 | |
| 220 | int |
| 221 | irframeread(dev_t dev, struct uio *uio, int flag) |
| 222 | { |
| 223 | struct irframe_softc *sc; |
| 224 | |
| 225 | sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); |
| 226 | if (sc == NULL) |
| 227 | return (ENXIO); |
| 228 | if (!device_is_active(sc->sc_dev) || !sc->sc_open) |
| 229 | return (EIO); |
| 230 | if (uio->uio_resid < sc->sc_params.maxsize) { |
| 231 | #ifdef DIAGNOSTIC |
| 232 | printf("irframeread: short read %ld < %d\n" , |
| 233 | (long)uio->uio_resid, sc->sc_params.maxsize); |
| 234 | #endif |
| 235 | return (EINVAL); |
| 236 | } |
| 237 | return (sc->sc_methods->im_read(sc->sc_handle, uio, flag)); |
| 238 | } |
| 239 | |
| 240 | int |
| 241 | irframewrite(dev_t dev, struct uio *uio, int flag) |
| 242 | { |
| 243 | struct irframe_softc *sc; |
| 244 | |
| 245 | sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); |
| 246 | if (sc == NULL) |
| 247 | return (ENXIO); |
| 248 | if (!device_is_active(sc->sc_dev) || !sc->sc_open) |
| 249 | return (EIO); |
| 250 | if (uio->uio_resid > sc->sc_params.maxsize) { |
| 251 | #ifdef DIAGNOSTIC |
| 252 | printf("irframeread: long write %ld > %d\n" , |
| 253 | (long)uio->uio_resid, sc->sc_params.maxsize); |
| 254 | #endif |
| 255 | return (EINVAL); |
| 256 | } |
| 257 | return (sc->sc_methods->im_write(sc->sc_handle, uio, flag)); |
| 258 | } |
| 259 | |
| 260 | int |
| 261 | irf_set_params(struct irframe_softc *sc, struct irda_params *p) |
| 262 | { |
| 263 | int error; |
| 264 | |
| 265 | DPRINTF(("irf_set_params: set params speed=%u ebofs=%u maxsize=%u " |
| 266 | "speedmask=0x%x\n" , p->speed, p->ebofs, p->maxsize, |
| 267 | sc->sc_speedmask)); |
| 268 | |
| 269 | if (p->maxsize > IRDA_MAX_FRAME_SIZE) { |
| 270 | #ifdef IRFRAME_DEBUG |
| 271 | printf("irf_set_params: bad maxsize=%u\n" , p->maxsize); |
| 272 | #endif |
| 273 | return (EINVAL); |
| 274 | } |
| 275 | |
| 276 | if (p->ebofs > IRDA_MAX_EBOFS) { |
| 277 | #ifdef IRFRAME_DEBUG |
| 278 | printf("irf_set_params: bad maxsize=%u\n" , p->maxsize); |
| 279 | #endif |
| 280 | return (EINVAL); |
| 281 | } |
| 282 | |
| 283 | #define CONC(x,y) x##y |
| 284 | #define CASE(s) case s: if (!(sc->sc_speedmask & CONC(IRDA_SPEED_,s))) return (EINVAL); break |
| 285 | switch (p->speed) { |
| 286 | CASE(2400); |
| 287 | CASE(9600); |
| 288 | CASE(19200); |
| 289 | CASE(38400); |
| 290 | CASE(57600); |
| 291 | CASE(115200); |
| 292 | CASE(576000); |
| 293 | CASE(1152000); |
| 294 | CASE(4000000); |
| 295 | CASE(16000000); |
| 296 | default: return (EINVAL); |
| 297 | } |
| 298 | #undef CONC |
| 299 | #undef CASE |
| 300 | |
| 301 | error = sc->sc_methods->im_set_params(sc->sc_handle, p); |
| 302 | if (!error) { |
| 303 | sc->sc_params = *p; |
| 304 | DPRINTF(("irf_set_params: ok\n" )); |
| 305 | #ifdef DIAGNOSTIC |
| 306 | if (p->speed != sc->sc_speed) { |
| 307 | sc->sc_speed = p->speed; |
| 308 | aprint_verbose_dev(sc->sc_dev, "set speed %u\n" , |
| 309 | sc->sc_speed); |
| 310 | } |
| 311 | #endif |
| 312 | } else { |
| 313 | #ifdef IRFRAME_DEBUG |
| 314 | printf("irf_set_params: error=%d\n" , error); |
| 315 | #endif |
| 316 | } |
| 317 | return (error); |
| 318 | } |
| 319 | |
| 320 | int |
| 321 | irf_reset_params(struct irframe_softc *sc) |
| 322 | { |
| 323 | struct irda_params params; |
| 324 | |
| 325 | params.speed = IRDA_DEFAULT_SPEED; |
| 326 | params.ebofs = IRDA_DEFAULT_EBOFS; |
| 327 | params.maxsize = IRDA_DEFAULT_SIZE; |
| 328 | return (irf_set_params(sc, ¶ms)); |
| 329 | } |
| 330 | |
| 331 | int |
| 332 | irframeioctl(dev_t dev, u_long cmd, void *addr, int flag, |
| 333 | struct lwp *l) |
| 334 | { |
| 335 | struct irframe_softc *sc; |
| 336 | void *vaddr = addr; |
| 337 | int error; |
| 338 | |
| 339 | sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); |
| 340 | if (sc == NULL) |
| 341 | return (ENXIO); |
| 342 | if (!device_is_active(sc->sc_dev) || !sc->sc_open) |
| 343 | return (EIO); |
| 344 | |
| 345 | switch (cmd) { |
| 346 | case FIONBIO: |
| 347 | /* All handled in the upper FS layer. */ |
| 348 | error = 0; |
| 349 | break; |
| 350 | |
| 351 | case IRDA_SET_PARAMS: |
| 352 | error = irf_set_params(sc, vaddr); |
| 353 | break; |
| 354 | |
| 355 | case IRDA_RESET_PARAMS: |
| 356 | error = irf_reset_params(sc); |
| 357 | break; |
| 358 | |
| 359 | case IRDA_GET_SPEEDMASK: |
| 360 | error = sc->sc_methods->im_get_speeds(sc->sc_handle, vaddr); |
| 361 | break; |
| 362 | |
| 363 | case IRDA_GET_TURNAROUNDMASK: |
| 364 | error = sc->sc_methods->im_get_turnarounds(sc->sc_handle,vaddr); |
| 365 | break; |
| 366 | |
| 367 | default: |
| 368 | error = EINVAL; |
| 369 | break; |
| 370 | } |
| 371 | return (error); |
| 372 | } |
| 373 | |
| 374 | int |
| 375 | irframepoll(dev_t dev, int events, struct lwp *l) |
| 376 | { |
| 377 | struct irframe_softc *sc; |
| 378 | |
| 379 | sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); |
| 380 | if (sc == NULL) |
| 381 | return (POLLHUP); |
| 382 | if (!device_is_active(sc->sc_dev) || !sc->sc_open) |
| 383 | return (POLLHUP); |
| 384 | |
| 385 | return (sc->sc_methods->im_poll(sc->sc_handle, events, l)); |
| 386 | } |
| 387 | |
| 388 | int |
| 389 | irframekqfilter(dev_t dev, struct knote *kn) |
| 390 | { |
| 391 | struct irframe_softc *sc; |
| 392 | |
| 393 | sc = device_lookup_private(&irframe_cd, IRFRAMEUNIT(dev)); |
| 394 | if (!device_is_active(sc->sc_dev) || !sc->sc_open) |
| 395 | return (1); |
| 396 | |
| 397 | return (sc->sc_methods->im_kqfilter(sc->sc_handle, kn)); |
| 398 | } |
| 399 | |