| 1 | /* $NetBSD: ugen.c,v 1.134 2016/07/07 06:55:42 msaitoh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1998, 2004 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) at |
| 9 | * Carlstedt Research & Technology. |
| 10 | * |
| 11 | * Copyright (c) 2006 BBN Technologies Corp. All rights reserved. |
| 12 | * Effort sponsored in part by the Defense Advanced Research Projects |
| 13 | * Agency (DARPA) and the Department of the Interior National Business |
| 14 | * Center under agreement number NBCHC050166. |
| 15 | * |
| 16 | * Redistribution and use in source and binary forms, with or without |
| 17 | * modification, are permitted provided that the following conditions |
| 18 | * are met: |
| 19 | * 1. Redistributions of source code must retain the above copyright |
| 20 | * notice, this list of conditions and the following disclaimer. |
| 21 | * 2. Redistributions in binary form must reproduce the above copyright |
| 22 | * notice, this list of conditions and the following disclaimer in the |
| 23 | * documentation and/or other materials provided with the distribution. |
| 24 | * |
| 25 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 26 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 28 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 29 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 35 | * POSSIBILITY OF SUCH DAMAGE. |
| 36 | */ |
| 37 | |
| 38 | |
| 39 | #include <sys/cdefs.h> |
| 40 | __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.134 2016/07/07 06:55:42 msaitoh Exp $" ); |
| 41 | |
| 42 | #ifdef _KERNEL_OPT |
| 43 | #include "opt_compat_netbsd.h" |
| 44 | #include "opt_usb.h" |
| 45 | #endif |
| 46 | |
| 47 | #include <sys/param.h> |
| 48 | #include <sys/systm.h> |
| 49 | #include <sys/kernel.h> |
| 50 | #include <sys/kmem.h> |
| 51 | #include <sys/device.h> |
| 52 | #include <sys/ioctl.h> |
| 53 | #include <sys/conf.h> |
| 54 | #include <sys/tty.h> |
| 55 | #include <sys/file.h> |
| 56 | #include <sys/select.h> |
| 57 | #include <sys/proc.h> |
| 58 | #include <sys/vnode.h> |
| 59 | #include <sys/poll.h> |
| 60 | |
| 61 | #include <dev/usb/usb.h> |
| 62 | #include <dev/usb/usbdi.h> |
| 63 | #include <dev/usb/usbdi_util.h> |
| 64 | |
| 65 | #ifdef UGEN_DEBUG |
| 66 | #define DPRINTF(x) if (ugendebug) printf x |
| 67 | #define DPRINTFN(n,x) if (ugendebug>(n)) printf x |
| 68 | int ugendebug = 0; |
| 69 | #else |
| 70 | #define DPRINTF(x) |
| 71 | #define DPRINTFN(n,x) |
| 72 | #endif |
| 73 | |
| 74 | #define UGEN_CHUNK 128 /* chunk size for read */ |
| 75 | #define UGEN_IBSIZE 1020 /* buffer size */ |
| 76 | #define UGEN_BBSIZE 1024 |
| 77 | |
| 78 | #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ |
| 79 | #define UGEN_NISORFRMS 8 /* number of transactions per req */ |
| 80 | #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) |
| 81 | |
| 82 | #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ |
| 83 | #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ |
| 84 | |
| 85 | struct isoreq { |
| 86 | struct ugen_endpoint *sce; |
| 87 | struct usbd_xfer *xfer; |
| 88 | void *dmabuf; |
| 89 | uint16_t sizes[UGEN_NISORFRMS]; |
| 90 | }; |
| 91 | |
| 92 | struct ugen_endpoint { |
| 93 | struct ugen_softc *sc; |
| 94 | usb_endpoint_descriptor_t *edesc; |
| 95 | struct usbd_interface *iface; |
| 96 | int state; |
| 97 | #define UGEN_ASLP 0x02 /* waiting for data */ |
| 98 | #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ |
| 99 | #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ |
| 100 | #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ |
| 101 | #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ |
| 102 | struct usbd_pipe *pipeh; |
| 103 | struct clist q; |
| 104 | u_char *ibuf; /* start of buffer (circular for isoc) */ |
| 105 | u_char *fill; /* location for input (isoc) */ |
| 106 | u_char *limit; /* end of circular buffer (isoc) */ |
| 107 | u_char *cur; /* current read location (isoc) */ |
| 108 | uint32_t timeout; |
| 109 | uint32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ |
| 110 | uint32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ |
| 111 | uint32_t ra_wb_used; /* how much is in buffer */ |
| 112 | uint32_t ra_wb_xferlen; /* current xfer length for RA/WB */ |
| 113 | struct usbd_xfer *ra_wb_xfer; |
| 114 | struct isoreq isoreqs[UGEN_NISOREQS]; |
| 115 | /* Keep these last; we don't overwrite them in ugen_set_config() */ |
| 116 | #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) |
| 117 | struct selinfo rsel; |
| 118 | kcondvar_t cv; |
| 119 | }; |
| 120 | |
| 121 | struct ugen_softc { |
| 122 | device_t sc_dev; /* base device */ |
| 123 | struct usbd_device *sc_udev; |
| 124 | |
| 125 | kmutex_t sc_lock; |
| 126 | kcondvar_t sc_detach_cv; |
| 127 | |
| 128 | char sc_is_open[USB_MAX_ENDPOINTS]; |
| 129 | struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; |
| 130 | #define OUT 0 |
| 131 | #define IN 1 |
| 132 | |
| 133 | int sc_refcnt; |
| 134 | char sc_buffer[UGEN_BBSIZE]; |
| 135 | u_char sc_dying; |
| 136 | }; |
| 137 | |
| 138 | dev_type_open(ugenopen); |
| 139 | dev_type_close(ugenclose); |
| 140 | dev_type_read(ugenread); |
| 141 | dev_type_write(ugenwrite); |
| 142 | dev_type_ioctl(ugenioctl); |
| 143 | dev_type_poll(ugenpoll); |
| 144 | dev_type_kqfilter(ugenkqfilter); |
| 145 | |
| 146 | const struct cdevsw ugen_cdevsw = { |
| 147 | .d_open = ugenopen, |
| 148 | .d_close = ugenclose, |
| 149 | .d_read = ugenread, |
| 150 | .d_write = ugenwrite, |
| 151 | .d_ioctl = ugenioctl, |
| 152 | .d_stop = nostop, |
| 153 | .d_tty = notty, |
| 154 | .d_poll = ugenpoll, |
| 155 | .d_mmap = nommap, |
| 156 | .d_kqfilter = ugenkqfilter, |
| 157 | .d_discard = nodiscard, |
| 158 | .d_flag = D_OTHER, |
| 159 | }; |
| 160 | |
| 161 | Static void ugenintr(struct usbd_xfer *, void *, |
| 162 | usbd_status); |
| 163 | Static void ugen_isoc_rintr(struct usbd_xfer *, void *, |
| 164 | usbd_status); |
| 165 | Static void ugen_bulkra_intr(struct usbd_xfer *, void *, |
| 166 | usbd_status); |
| 167 | Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, |
| 168 | usbd_status); |
| 169 | Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); |
| 170 | Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); |
| 171 | Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, |
| 172 | void *, int, struct lwp *); |
| 173 | Static int ugen_set_config(struct ugen_softc *, int); |
| 174 | Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, |
| 175 | int, int *); |
| 176 | Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); |
| 177 | Static int ugen_get_alt_index(struct ugen_softc *, int); |
| 178 | Static void ugen_clear_endpoints(struct ugen_softc *); |
| 179 | |
| 180 | #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) |
| 181 | #define UGENENDPOINT(n) (minor(n) & 0xf) |
| 182 | #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) |
| 183 | |
| 184 | int ugen_match(device_t, cfdata_t, void *); |
| 185 | void ugen_attach(device_t, device_t, void *); |
| 186 | int ugen_detach(device_t, int); |
| 187 | int ugen_activate(device_t, enum devact); |
| 188 | extern struct cfdriver ugen_cd; |
| 189 | CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, ugen_attach, |
| 190 | ugen_detach, ugen_activate); |
| 191 | |
| 192 | /* toggle to control attach priority. -1 means "let autoconf decide" */ |
| 193 | int ugen_override = -1; |
| 194 | |
| 195 | int |
| 196 | ugen_match(device_t parent, cfdata_t match, void *aux) |
| 197 | { |
| 198 | struct usb_attach_arg *uaa = aux; |
| 199 | int override; |
| 200 | |
| 201 | if (ugen_override != -1) |
| 202 | override = ugen_override; |
| 203 | else |
| 204 | override = match->cf_flags & 1; |
| 205 | |
| 206 | if (override) |
| 207 | return UMATCH_HIGHEST; |
| 208 | else if (uaa->uaa_usegeneric) |
| 209 | return UMATCH_GENERIC; |
| 210 | else |
| 211 | return UMATCH_NONE; |
| 212 | } |
| 213 | |
| 214 | void |
| 215 | ugen_attach(device_t parent, device_t self, void *aux) |
| 216 | { |
| 217 | struct ugen_softc *sc = device_private(self); |
| 218 | struct usb_attach_arg *uaa = aux; |
| 219 | struct usbd_device *udev; |
| 220 | char *devinfop; |
| 221 | usbd_status err; |
| 222 | int i, dir, conf; |
| 223 | |
| 224 | aprint_naive("\n" ); |
| 225 | aprint_normal("\n" ); |
| 226 | |
| 227 | mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); |
| 228 | cv_init(&sc->sc_detach_cv, "ugendet" ); |
| 229 | |
| 230 | devinfop = usbd_devinfo_alloc(uaa->uaa_device, 0); |
| 231 | aprint_normal_dev(self, "%s\n" , devinfop); |
| 232 | usbd_devinfo_free(devinfop); |
| 233 | |
| 234 | sc->sc_dev = self; |
| 235 | sc->sc_udev = udev = uaa->uaa_device; |
| 236 | |
| 237 | for (i = 0; i < USB_MAX_ENDPOINTS; i++) { |
| 238 | for (dir = OUT; dir <= IN; dir++) { |
| 239 | struct ugen_endpoint *sce; |
| 240 | |
| 241 | sce = &sc->sc_endpoints[i][dir]; |
| 242 | selinit(&sce->rsel); |
| 243 | cv_init(&sce->cv, "ugensce" ); |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | /* First set configuration index 0, the default one for ugen. */ |
| 248 | err = usbd_set_config_index(udev, 0, 0); |
| 249 | if (err) { |
| 250 | aprint_error_dev(self, |
| 251 | "setting configuration index 0 failed\n" ); |
| 252 | sc->sc_dying = 1; |
| 253 | return; |
| 254 | } |
| 255 | conf = usbd_get_config_descriptor(udev)->bConfigurationValue; |
| 256 | |
| 257 | /* Set up all the local state for this configuration. */ |
| 258 | err = ugen_set_config(sc, conf); |
| 259 | if (err) { |
| 260 | aprint_error_dev(self, "setting configuration %d failed\n" , |
| 261 | conf); |
| 262 | sc->sc_dying = 1; |
| 263 | return; |
| 264 | } |
| 265 | |
| 266 | usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); |
| 267 | |
| 268 | if (!pmf_device_register(self, NULL, NULL)) |
| 269 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 270 | |
| 271 | return; |
| 272 | } |
| 273 | |
| 274 | Static void |
| 275 | ugen_clear_endpoints(struct ugen_softc *sc) |
| 276 | { |
| 277 | |
| 278 | /* Clear out the old info, but leave the selinfo and cv initialised. */ |
| 279 | for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { |
| 280 | for (int dir = OUT; dir <= IN; dir++) { |
| 281 | struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; |
| 282 | memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); |
| 283 | } |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | Static int |
| 288 | ugen_set_config(struct ugen_softc *sc, int configno) |
| 289 | { |
| 290 | struct usbd_device *dev = sc->sc_udev; |
| 291 | usb_config_descriptor_t *cdesc; |
| 292 | struct usbd_interface *iface; |
| 293 | usb_endpoint_descriptor_t *ed; |
| 294 | struct ugen_endpoint *sce; |
| 295 | uint8_t niface, nendpt; |
| 296 | int ifaceno, endptno, endpt; |
| 297 | usbd_status err; |
| 298 | int dir; |
| 299 | |
| 300 | DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n" , |
| 301 | device_xname(sc->sc_dev), configno, sc)); |
| 302 | |
| 303 | /* |
| 304 | * We start at 1, not 0, because we don't care whether the |
| 305 | * control endpoint is open or not. It is always present. |
| 306 | */ |
| 307 | for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) |
| 308 | if (sc->sc_is_open[endptno]) { |
| 309 | DPRINTFN(1, |
| 310 | ("ugen_set_config: %s - endpoint %d is open\n" , |
| 311 | device_xname(sc->sc_dev), endptno)); |
| 312 | return USBD_IN_USE; |
| 313 | } |
| 314 | |
| 315 | /* Avoid setting the current value. */ |
| 316 | cdesc = usbd_get_config_descriptor(dev); |
| 317 | if (!cdesc || cdesc->bConfigurationValue != configno) { |
| 318 | err = usbd_set_config_no(dev, configno, 1); |
| 319 | if (err) |
| 320 | return err; |
| 321 | } |
| 322 | |
| 323 | err = usbd_interface_count(dev, &niface); |
| 324 | if (err) |
| 325 | return err; |
| 326 | |
| 327 | ugen_clear_endpoints(sc); |
| 328 | |
| 329 | for (ifaceno = 0; ifaceno < niface; ifaceno++) { |
| 330 | DPRINTFN(1,("ugen_set_config: ifaceno %d\n" , ifaceno)); |
| 331 | err = usbd_device2interface_handle(dev, ifaceno, &iface); |
| 332 | if (err) |
| 333 | return err; |
| 334 | err = usbd_endpoint_count(iface, &nendpt); |
| 335 | if (err) |
| 336 | return err; |
| 337 | for (endptno = 0; endptno < nendpt; endptno++) { |
| 338 | ed = usbd_interface2endpoint_descriptor(iface,endptno); |
| 339 | KASSERT(ed != NULL); |
| 340 | endpt = ed->bEndpointAddress; |
| 341 | dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; |
| 342 | sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; |
| 343 | DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" |
| 344 | "(%d,%d), sce=%p\n" , |
| 345 | endptno, endpt, UE_GET_ADDR(endpt), |
| 346 | UE_GET_DIR(endpt), sce)); |
| 347 | sce->sc = sc; |
| 348 | sce->edesc = ed; |
| 349 | sce->iface = iface; |
| 350 | } |
| 351 | } |
| 352 | return USBD_NORMAL_COMPLETION; |
| 353 | } |
| 354 | |
| 355 | int |
| 356 | ugenopen(dev_t dev, int flag, int mode, struct lwp *l) |
| 357 | { |
| 358 | struct ugen_softc *sc; |
| 359 | int unit = UGENUNIT(dev); |
| 360 | int endpt = UGENENDPOINT(dev); |
| 361 | usb_endpoint_descriptor_t *edesc; |
| 362 | struct ugen_endpoint *sce; |
| 363 | int dir, isize; |
| 364 | usbd_status err; |
| 365 | struct usbd_xfer *xfer; |
| 366 | int i, j; |
| 367 | |
| 368 | sc = device_lookup_private(&ugen_cd, unit); |
| 369 | if (sc == NULL) |
| 370 | return ENXIO; |
| 371 | |
| 372 | DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n" , |
| 373 | flag, mode, unit, endpt)); |
| 374 | |
| 375 | if (sc == NULL || sc->sc_dying) |
| 376 | return ENXIO; |
| 377 | |
| 378 | /* The control endpoint allows multiple opens. */ |
| 379 | if (endpt == USB_CONTROL_ENDPOINT) { |
| 380 | sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | if (sc->sc_is_open[endpt]) |
| 385 | return EBUSY; |
| 386 | |
| 387 | /* Make sure there are pipes for all directions. */ |
| 388 | for (dir = OUT; dir <= IN; dir++) { |
| 389 | if (flag & (dir == OUT ? FWRITE : FREAD)) { |
| 390 | sce = &sc->sc_endpoints[endpt][dir]; |
| 391 | if (sce->edesc == NULL) |
| 392 | return ENXIO; |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | /* Actually open the pipes. */ |
| 397 | /* XXX Should back out properly if it fails. */ |
| 398 | for (dir = OUT; dir <= IN; dir++) { |
| 399 | if (!(flag & (dir == OUT ? FWRITE : FREAD))) |
| 400 | continue; |
| 401 | sce = &sc->sc_endpoints[endpt][dir]; |
| 402 | sce->state = 0; |
| 403 | sce->timeout = USBD_NO_TIMEOUT; |
| 404 | DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n" , |
| 405 | sc, endpt, dir, sce)); |
| 406 | edesc = sce->edesc; |
| 407 | switch (edesc->bmAttributes & UE_XFERTYPE) { |
| 408 | case UE_INTERRUPT: |
| 409 | if (dir == OUT) { |
| 410 | err = usbd_open_pipe(sce->iface, |
| 411 | edesc->bEndpointAddress, 0, &sce->pipeh); |
| 412 | if (err) |
| 413 | return EIO; |
| 414 | break; |
| 415 | } |
| 416 | isize = UGETW(edesc->wMaxPacketSize); |
| 417 | if (isize == 0) /* shouldn't happen */ |
| 418 | return EINVAL; |
| 419 | sce->ibuf = kmem_alloc(isize, KM_SLEEP); |
| 420 | DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n" , |
| 421 | endpt, isize)); |
| 422 | if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { |
| 423 | kmem_free(sce->ibuf, isize); |
| 424 | sce->ibuf = NULL; |
| 425 | return ENOMEM; |
| 426 | } |
| 427 | err = usbd_open_pipe_intr(sce->iface, |
| 428 | edesc->bEndpointAddress, |
| 429 | USBD_SHORT_XFER_OK, &sce->pipeh, sce, |
| 430 | sce->ibuf, isize, ugenintr, |
| 431 | USBD_DEFAULT_INTERVAL); |
| 432 | if (err) { |
| 433 | clfree(&sce->q); |
| 434 | kmem_free(sce->ibuf, isize); |
| 435 | sce->ibuf = NULL; |
| 436 | return EIO; |
| 437 | } |
| 438 | DPRINTFN(5, ("ugenopen: interrupt open done\n" )); |
| 439 | break; |
| 440 | case UE_BULK: |
| 441 | err = usbd_open_pipe(sce->iface, |
| 442 | edesc->bEndpointAddress, 0, &sce->pipeh); |
| 443 | if (err) |
| 444 | return EIO; |
| 445 | sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; |
| 446 | /* |
| 447 | * Use request size for non-RA/WB transfers |
| 448 | * as the default. |
| 449 | */ |
| 450 | sce->ra_wb_reqsize = UGEN_BBSIZE; |
| 451 | break; |
| 452 | case UE_ISOCHRONOUS: |
| 453 | if (dir == OUT) |
| 454 | return EINVAL; |
| 455 | isize = UGETW(edesc->wMaxPacketSize); |
| 456 | if (isize == 0) /* shouldn't happen */ |
| 457 | return EINVAL; |
| 458 | sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, |
| 459 | KM_SLEEP); |
| 460 | sce->cur = sce->fill = sce->ibuf; |
| 461 | sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; |
| 462 | DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n" , |
| 463 | endpt, isize)); |
| 464 | err = usbd_open_pipe(sce->iface, |
| 465 | edesc->bEndpointAddress, 0, &sce->pipeh); |
| 466 | if (err) { |
| 467 | kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); |
| 468 | sce->ibuf = NULL; |
| 469 | return EIO; |
| 470 | } |
| 471 | for (i = 0; i < UGEN_NISOREQS; ++i) { |
| 472 | sce->isoreqs[i].sce = sce; |
| 473 | err = usbd_create_xfer(sce->pipeh, |
| 474 | isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, |
| 475 | &xfer); |
| 476 | if (err) |
| 477 | goto bad; |
| 478 | sce->isoreqs[i].xfer = xfer; |
| 479 | sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); |
| 480 | for (j = 0; j < UGEN_NISORFRMS; ++j) |
| 481 | sce->isoreqs[i].sizes[j] = isize; |
| 482 | usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], |
| 483 | sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, |
| 484 | ugen_isoc_rintr); |
| 485 | (void)usbd_transfer(xfer); |
| 486 | } |
| 487 | DPRINTFN(5, ("ugenopen: isoc open done\n" )); |
| 488 | break; |
| 489 | bad: |
| 490 | while (--i >= 0) /* implicit buffer free */ |
| 491 | usbd_destroy_xfer(sce->isoreqs[i].xfer); |
| 492 | usbd_close_pipe(sce->pipeh); |
| 493 | sce->pipeh = NULL; |
| 494 | kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); |
| 495 | sce->ibuf = NULL; |
| 496 | return ENOMEM; |
| 497 | case UE_CONTROL: |
| 498 | sce->timeout = USBD_DEFAULT_TIMEOUT; |
| 499 | return EINVAL; |
| 500 | } |
| 501 | } |
| 502 | sc->sc_is_open[endpt] = 1; |
| 503 | return 0; |
| 504 | } |
| 505 | |
| 506 | int |
| 507 | ugenclose(dev_t dev, int flag, int mode, struct lwp *l) |
| 508 | { |
| 509 | int endpt = UGENENDPOINT(dev); |
| 510 | struct ugen_softc *sc; |
| 511 | struct ugen_endpoint *sce; |
| 512 | int dir; |
| 513 | int i; |
| 514 | |
| 515 | sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); |
| 516 | if (sc == NULL) |
| 517 | return ENXIO; |
| 518 | |
| 519 | DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n" , |
| 520 | flag, mode, UGENUNIT(dev), endpt)); |
| 521 | |
| 522 | #ifdef DIAGNOSTIC |
| 523 | if (!sc->sc_is_open[endpt]) { |
| 524 | printf("ugenclose: not open\n" ); |
| 525 | return EINVAL; |
| 526 | } |
| 527 | #endif |
| 528 | |
| 529 | if (endpt == USB_CONTROL_ENDPOINT) { |
| 530 | DPRINTFN(5, ("ugenclose: close control\n" )); |
| 531 | sc->sc_is_open[endpt] = 0; |
| 532 | return 0; |
| 533 | } |
| 534 | |
| 535 | for (dir = OUT; dir <= IN; dir++) { |
| 536 | if (!(flag & (dir == OUT ? FWRITE : FREAD))) |
| 537 | continue; |
| 538 | sce = &sc->sc_endpoints[endpt][dir]; |
| 539 | if (sce->pipeh == NULL) |
| 540 | continue; |
| 541 | DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n" , |
| 542 | endpt, dir, sce)); |
| 543 | |
| 544 | usbd_abort_pipe(sce->pipeh); |
| 545 | |
| 546 | int isize = UGETW(sce->edesc->wMaxPacketSize); |
| 547 | int msize = 0; |
| 548 | |
| 549 | switch (sce->edesc->bmAttributes & UE_XFERTYPE) { |
| 550 | case UE_INTERRUPT: |
| 551 | ndflush(&sce->q, sce->q.c_cc); |
| 552 | clfree(&sce->q); |
| 553 | msize = isize; |
| 554 | break; |
| 555 | case UE_ISOCHRONOUS: |
| 556 | for (i = 0; i < UGEN_NISOREQS; ++i) |
| 557 | usbd_destroy_xfer(sce->isoreqs[i].xfer); |
| 558 | msize = isize * UGEN_NISOFRAMES; |
| 559 | break; |
| 560 | case UE_BULK: |
| 561 | if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { |
| 562 | usbd_destroy_xfer(sce->ra_wb_xfer); |
| 563 | msize = sce->ra_wb_bufsize; |
| 564 | } |
| 565 | break; |
| 566 | default: |
| 567 | break; |
| 568 | } |
| 569 | usbd_close_pipe(sce->pipeh); |
| 570 | sce->pipeh = NULL; |
| 571 | if (sce->ibuf != NULL) { |
| 572 | kmem_free(sce->ibuf, msize); |
| 573 | sce->ibuf = NULL; |
| 574 | } |
| 575 | } |
| 576 | sc->sc_is_open[endpt] = 0; |
| 577 | |
| 578 | return 0; |
| 579 | } |
| 580 | |
| 581 | Static int |
| 582 | ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) |
| 583 | { |
| 584 | struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; |
| 585 | uint32_t n, tn; |
| 586 | struct usbd_xfer *xfer; |
| 587 | usbd_status err; |
| 588 | int error = 0; |
| 589 | |
| 590 | DPRINTFN(5, ("%s: ugenread: %d\n" , device_xname(sc->sc_dev), endpt)); |
| 591 | |
| 592 | if (sc->sc_dying) |
| 593 | return EIO; |
| 594 | |
| 595 | if (endpt == USB_CONTROL_ENDPOINT) |
| 596 | return ENODEV; |
| 597 | |
| 598 | #ifdef DIAGNOSTIC |
| 599 | if (sce->edesc == NULL) { |
| 600 | printf("ugenread: no edesc\n" ); |
| 601 | return EIO; |
| 602 | } |
| 603 | if (sce->pipeh == NULL) { |
| 604 | printf("ugenread: no pipe\n" ); |
| 605 | return EIO; |
| 606 | } |
| 607 | #endif |
| 608 | |
| 609 | switch (sce->edesc->bmAttributes & UE_XFERTYPE) { |
| 610 | case UE_INTERRUPT: |
| 611 | /* Block until activity occurred. */ |
| 612 | mutex_enter(&sc->sc_lock); |
| 613 | while (sce->q.c_cc == 0) { |
| 614 | if (flag & IO_NDELAY) { |
| 615 | mutex_exit(&sc->sc_lock); |
| 616 | return EWOULDBLOCK; |
| 617 | } |
| 618 | sce->state |= UGEN_ASLP; |
| 619 | DPRINTFN(5, ("ugenread: sleep on %p\n" , sce)); |
| 620 | /* "ugenri" */ |
| 621 | error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, |
| 622 | mstohz(sce->timeout)); |
| 623 | DPRINTFN(5, ("ugenread: woke, error=%d\n" , error)); |
| 624 | if (sc->sc_dying) |
| 625 | error = EIO; |
| 626 | if (error) { |
| 627 | sce->state &= ~UGEN_ASLP; |
| 628 | break; |
| 629 | } |
| 630 | } |
| 631 | mutex_exit(&sc->sc_lock); |
| 632 | |
| 633 | /* Transfer as many chunks as possible. */ |
| 634 | while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { |
| 635 | n = min(sce->q.c_cc, uio->uio_resid); |
| 636 | if (n > sizeof(sc->sc_buffer)) |
| 637 | n = sizeof(sc->sc_buffer); |
| 638 | |
| 639 | /* Remove a small chunk from the input queue. */ |
| 640 | q_to_b(&sce->q, sc->sc_buffer, n); |
| 641 | DPRINTFN(5, ("ugenread: got %d chars\n" , n)); |
| 642 | |
| 643 | /* Copy the data to the user process. */ |
| 644 | error = uiomove(sc->sc_buffer, n, uio); |
| 645 | if (error) |
| 646 | break; |
| 647 | } |
| 648 | break; |
| 649 | case UE_BULK: |
| 650 | if (sce->state & UGEN_BULK_RA) { |
| 651 | DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n" , |
| 652 | uio->uio_resid, sce->ra_wb_used)); |
| 653 | xfer = sce->ra_wb_xfer; |
| 654 | |
| 655 | mutex_enter(&sc->sc_lock); |
| 656 | if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { |
| 657 | mutex_exit(&sc->sc_lock); |
| 658 | return EWOULDBLOCK; |
| 659 | } |
| 660 | while (uio->uio_resid > 0 && !error) { |
| 661 | while (sce->ra_wb_used == 0) { |
| 662 | sce->state |= UGEN_ASLP; |
| 663 | DPRINTFN(5, |
| 664 | ("ugenread: sleep on %p\n" , |
| 665 | sce)); |
| 666 | /* "ugenrb" */ |
| 667 | error = cv_timedwait_sig(&sce->cv, |
| 668 | &sc->sc_lock, mstohz(sce->timeout)); |
| 669 | DPRINTFN(5, |
| 670 | ("ugenread: woke, error=%d\n" , |
| 671 | error)); |
| 672 | if (sc->sc_dying) |
| 673 | error = EIO; |
| 674 | if (error) { |
| 675 | sce->state &= ~UGEN_ASLP; |
| 676 | break; |
| 677 | } |
| 678 | } |
| 679 | |
| 680 | /* Copy data to the process. */ |
| 681 | while (uio->uio_resid > 0 |
| 682 | && sce->ra_wb_used > 0) { |
| 683 | n = min(uio->uio_resid, |
| 684 | sce->ra_wb_used); |
| 685 | n = min(n, sce->limit - sce->cur); |
| 686 | error = uiomove(sce->cur, n, uio); |
| 687 | if (error) |
| 688 | break; |
| 689 | sce->cur += n; |
| 690 | sce->ra_wb_used -= n; |
| 691 | if (sce->cur == sce->limit) |
| 692 | sce->cur = sce->ibuf; |
| 693 | } |
| 694 | |
| 695 | /* |
| 696 | * If the transfers stopped because the |
| 697 | * buffer was full, restart them. |
| 698 | */ |
| 699 | if (sce->state & UGEN_RA_WB_STOP && |
| 700 | sce->ra_wb_used < sce->limit - sce->ibuf) { |
| 701 | n = (sce->limit - sce->ibuf) |
| 702 | - sce->ra_wb_used; |
| 703 | usbd_setup_xfer(xfer, sce, NULL, |
| 704 | min(n, sce->ra_wb_xferlen), |
| 705 | 0, USBD_NO_TIMEOUT, |
| 706 | ugen_bulkra_intr); |
| 707 | sce->state &= ~UGEN_RA_WB_STOP; |
| 708 | err = usbd_transfer(xfer); |
| 709 | if (err != USBD_IN_PROGRESS) |
| 710 | /* |
| 711 | * The transfer has not been |
| 712 | * queued. Setting STOP |
| 713 | * will make us try |
| 714 | * again at the next read. |
| 715 | */ |
| 716 | sce->state |= UGEN_RA_WB_STOP; |
| 717 | } |
| 718 | } |
| 719 | mutex_exit(&sc->sc_lock); |
| 720 | break; |
| 721 | } |
| 722 | error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, |
| 723 | sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, |
| 724 | 0, &xfer); |
| 725 | if (error) |
| 726 | return error; |
| 727 | while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { |
| 728 | DPRINTFN(1, ("ugenread: start transfer %d bytes\n" ,n)); |
| 729 | tn = n; |
| 730 | err = usbd_bulk_transfer(xfer, sce->pipeh, |
| 731 | sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, |
| 732 | sce->timeout, sc->sc_buffer, &tn); |
| 733 | if (err) { |
| 734 | if (err == USBD_INTERRUPTED) |
| 735 | error = EINTR; |
| 736 | else if (err == USBD_TIMEOUT) |
| 737 | error = ETIMEDOUT; |
| 738 | else |
| 739 | error = EIO; |
| 740 | break; |
| 741 | } |
| 742 | DPRINTFN(1, ("ugenread: got %d bytes\n" , tn)); |
| 743 | error = uiomove(sc->sc_buffer, tn, uio); |
| 744 | if (error || tn < n) |
| 745 | break; |
| 746 | } |
| 747 | usbd_destroy_xfer(xfer); |
| 748 | break; |
| 749 | case UE_ISOCHRONOUS: |
| 750 | mutex_enter(&sc->sc_lock); |
| 751 | while (sce->cur == sce->fill) { |
| 752 | if (flag & IO_NDELAY) { |
| 753 | mutex_exit(&sc->sc_lock); |
| 754 | return EWOULDBLOCK; |
| 755 | } |
| 756 | sce->state |= UGEN_ASLP; |
| 757 | /* "ugenri" */ |
| 758 | DPRINTFN(5, ("ugenread: sleep on %p\n" , sce)); |
| 759 | error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, |
| 760 | mstohz(sce->timeout)); |
| 761 | DPRINTFN(5, ("ugenread: woke, error=%d\n" , error)); |
| 762 | if (sc->sc_dying) |
| 763 | error = EIO; |
| 764 | if (error) { |
| 765 | sce->state &= ~UGEN_ASLP; |
| 766 | break; |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { |
| 771 | if(sce->fill > sce->cur) |
| 772 | n = min(sce->fill - sce->cur, uio->uio_resid); |
| 773 | else |
| 774 | n = min(sce->limit - sce->cur, uio->uio_resid); |
| 775 | |
| 776 | DPRINTFN(5, ("ugenread: isoc got %d chars\n" , n)); |
| 777 | |
| 778 | /* Copy the data to the user process. */ |
| 779 | error = uiomove(sce->cur, n, uio); |
| 780 | if (error) |
| 781 | break; |
| 782 | sce->cur += n; |
| 783 | if (sce->cur >= sce->limit) |
| 784 | sce->cur = sce->ibuf; |
| 785 | } |
| 786 | mutex_exit(&sc->sc_lock); |
| 787 | break; |
| 788 | |
| 789 | |
| 790 | default: |
| 791 | return ENXIO; |
| 792 | } |
| 793 | return error; |
| 794 | } |
| 795 | |
| 796 | int |
| 797 | ugenread(dev_t dev, struct uio *uio, int flag) |
| 798 | { |
| 799 | int endpt = UGENENDPOINT(dev); |
| 800 | struct ugen_softc *sc; |
| 801 | int error; |
| 802 | |
| 803 | sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); |
| 804 | if (sc == NULL) |
| 805 | return ENXIO; |
| 806 | |
| 807 | mutex_enter(&sc->sc_lock); |
| 808 | sc->sc_refcnt++; |
| 809 | mutex_exit(&sc->sc_lock); |
| 810 | |
| 811 | error = ugen_do_read(sc, endpt, uio, flag); |
| 812 | |
| 813 | mutex_enter(&sc->sc_lock); |
| 814 | if (--sc->sc_refcnt < 0) |
| 815 | usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); |
| 816 | mutex_exit(&sc->sc_lock); |
| 817 | |
| 818 | return error; |
| 819 | } |
| 820 | |
| 821 | Static int |
| 822 | ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, |
| 823 | int flag) |
| 824 | { |
| 825 | struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; |
| 826 | uint32_t n; |
| 827 | int error = 0; |
| 828 | uint32_t tn; |
| 829 | char *dbuf; |
| 830 | struct usbd_xfer *xfer; |
| 831 | usbd_status err; |
| 832 | |
| 833 | DPRINTFN(5, ("%s: ugenwrite: %d\n" , device_xname(sc->sc_dev), endpt)); |
| 834 | |
| 835 | if (sc->sc_dying) |
| 836 | return EIO; |
| 837 | |
| 838 | if (endpt == USB_CONTROL_ENDPOINT) |
| 839 | return ENODEV; |
| 840 | |
| 841 | #ifdef DIAGNOSTIC |
| 842 | if (sce->edesc == NULL) { |
| 843 | printf("ugenwrite: no edesc\n" ); |
| 844 | return EIO; |
| 845 | } |
| 846 | if (sce->pipeh == NULL) { |
| 847 | printf("ugenwrite: no pipe\n" ); |
| 848 | return EIO; |
| 849 | } |
| 850 | #endif |
| 851 | |
| 852 | switch (sce->edesc->bmAttributes & UE_XFERTYPE) { |
| 853 | case UE_BULK: |
| 854 | if (sce->state & UGEN_BULK_WB) { |
| 855 | DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n" , |
| 856 | uio->uio_resid, sce->ra_wb_used)); |
| 857 | xfer = sce->ra_wb_xfer; |
| 858 | |
| 859 | mutex_enter(&sc->sc_lock); |
| 860 | if (sce->ra_wb_used == sce->limit - sce->ibuf && |
| 861 | flag & IO_NDELAY) { |
| 862 | mutex_exit(&sc->sc_lock); |
| 863 | return EWOULDBLOCK; |
| 864 | } |
| 865 | while (uio->uio_resid > 0 && !error) { |
| 866 | while (sce->ra_wb_used == |
| 867 | sce->limit - sce->ibuf) { |
| 868 | sce->state |= UGEN_ASLP; |
| 869 | DPRINTFN(5, |
| 870 | ("ugenwrite: sleep on %p\n" , |
| 871 | sce)); |
| 872 | /* "ugenwb" */ |
| 873 | error = cv_timedwait_sig(&sce->cv, |
| 874 | &sc->sc_lock, mstohz(sce->timeout)); |
| 875 | DPRINTFN(5, |
| 876 | ("ugenwrite: woke, error=%d\n" , |
| 877 | error)); |
| 878 | if (sc->sc_dying) |
| 879 | error = EIO; |
| 880 | if (error) { |
| 881 | sce->state &= ~UGEN_ASLP; |
| 882 | break; |
| 883 | } |
| 884 | } |
| 885 | |
| 886 | /* Copy data from the process. */ |
| 887 | while (uio->uio_resid > 0 && |
| 888 | sce->ra_wb_used < sce->limit - sce->ibuf) { |
| 889 | n = min(uio->uio_resid, |
| 890 | (sce->limit - sce->ibuf) |
| 891 | - sce->ra_wb_used); |
| 892 | n = min(n, sce->limit - sce->fill); |
| 893 | error = uiomove(sce->fill, n, uio); |
| 894 | if (error) |
| 895 | break; |
| 896 | sce->fill += n; |
| 897 | sce->ra_wb_used += n; |
| 898 | if (sce->fill == sce->limit) |
| 899 | sce->fill = sce->ibuf; |
| 900 | } |
| 901 | |
| 902 | /* |
| 903 | * If the transfers stopped because the |
| 904 | * buffer was empty, restart them. |
| 905 | */ |
| 906 | if (sce->state & UGEN_RA_WB_STOP && |
| 907 | sce->ra_wb_used > 0) { |
| 908 | dbuf = (char *)usbd_get_buffer(xfer); |
| 909 | n = min(sce->ra_wb_used, |
| 910 | sce->ra_wb_xferlen); |
| 911 | tn = min(n, sce->limit - sce->cur); |
| 912 | memcpy(dbuf, sce->cur, tn); |
| 913 | dbuf += tn; |
| 914 | if (n - tn > 0) |
| 915 | memcpy(dbuf, sce->ibuf, |
| 916 | n - tn); |
| 917 | usbd_setup_xfer(xfer, sce, NULL, n, |
| 918 | 0, USBD_NO_TIMEOUT, |
| 919 | ugen_bulkwb_intr); |
| 920 | sce->state &= ~UGEN_RA_WB_STOP; |
| 921 | err = usbd_transfer(xfer); |
| 922 | if (err != USBD_IN_PROGRESS) |
| 923 | /* |
| 924 | * The transfer has not been |
| 925 | * queued. Setting STOP |
| 926 | * will make us try again |
| 927 | * at the next read. |
| 928 | */ |
| 929 | sce->state |= UGEN_RA_WB_STOP; |
| 930 | } |
| 931 | } |
| 932 | mutex_exit(&sc->sc_lock); |
| 933 | break; |
| 934 | } |
| 935 | error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, |
| 936 | sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, |
| 937 | 0, &xfer); |
| 938 | if (error) |
| 939 | return error; |
| 940 | while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { |
| 941 | error = uiomove(sc->sc_buffer, n, uio); |
| 942 | if (error) |
| 943 | break; |
| 944 | DPRINTFN(1, ("ugenwrite: transfer %d bytes\n" , n)); |
| 945 | err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, |
| 946 | sc->sc_buffer, &n); |
| 947 | if (err) { |
| 948 | if (err == USBD_INTERRUPTED) |
| 949 | error = EINTR; |
| 950 | else if (err == USBD_TIMEOUT) |
| 951 | error = ETIMEDOUT; |
| 952 | else |
| 953 | error = EIO; |
| 954 | break; |
| 955 | } |
| 956 | } |
| 957 | usbd_destroy_xfer(xfer); |
| 958 | break; |
| 959 | case UE_INTERRUPT: |
| 960 | error = usbd_create_xfer(sce->pipeh, |
| 961 | UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); |
| 962 | if (error) |
| 963 | return error; |
| 964 | while ((n = min(UGETW(sce->edesc->wMaxPacketSize), |
| 965 | uio->uio_resid)) != 0) { |
| 966 | error = uiomove(sc->sc_buffer, n, uio); |
| 967 | if (error) |
| 968 | break; |
| 969 | DPRINTFN(1, ("ugenwrite: transfer %d bytes\n" , n)); |
| 970 | err = usbd_intr_transfer(xfer, sce->pipeh, 0, |
| 971 | sce->timeout, sc->sc_buffer, &n); |
| 972 | if (err) { |
| 973 | if (err == USBD_INTERRUPTED) |
| 974 | error = EINTR; |
| 975 | else if (err == USBD_TIMEOUT) |
| 976 | error = ETIMEDOUT; |
| 977 | else |
| 978 | error = EIO; |
| 979 | break; |
| 980 | } |
| 981 | } |
| 982 | usbd_destroy_xfer(xfer); |
| 983 | break; |
| 984 | default: |
| 985 | return ENXIO; |
| 986 | } |
| 987 | return error; |
| 988 | } |
| 989 | |
| 990 | int |
| 991 | ugenwrite(dev_t dev, struct uio *uio, int flag) |
| 992 | { |
| 993 | int endpt = UGENENDPOINT(dev); |
| 994 | struct ugen_softc *sc; |
| 995 | int error; |
| 996 | |
| 997 | sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); |
| 998 | if (sc == NULL) |
| 999 | return ENXIO; |
| 1000 | |
| 1001 | mutex_enter(&sc->sc_lock); |
| 1002 | sc->sc_refcnt++; |
| 1003 | mutex_exit(&sc->sc_lock); |
| 1004 | |
| 1005 | error = ugen_do_write(sc, endpt, uio, flag); |
| 1006 | |
| 1007 | mutex_enter(&sc->sc_lock); |
| 1008 | if (--sc->sc_refcnt < 0) |
| 1009 | usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); |
| 1010 | mutex_exit(&sc->sc_lock); |
| 1011 | |
| 1012 | return error; |
| 1013 | } |
| 1014 | |
| 1015 | int |
| 1016 | ugen_activate(device_t self, enum devact act) |
| 1017 | { |
| 1018 | struct ugen_softc *sc = device_private(self); |
| 1019 | |
| 1020 | switch (act) { |
| 1021 | case DVACT_DEACTIVATE: |
| 1022 | sc->sc_dying = 1; |
| 1023 | return 0; |
| 1024 | default: |
| 1025 | return EOPNOTSUPP; |
| 1026 | } |
| 1027 | } |
| 1028 | |
| 1029 | int |
| 1030 | ugen_detach(device_t self, int flags) |
| 1031 | { |
| 1032 | struct ugen_softc *sc = device_private(self); |
| 1033 | struct ugen_endpoint *sce; |
| 1034 | int i, dir; |
| 1035 | int maj, mn; |
| 1036 | |
| 1037 | DPRINTF(("ugen_detach: sc=%p flags=%d\n" , sc, flags)); |
| 1038 | |
| 1039 | sc->sc_dying = 1; |
| 1040 | pmf_device_deregister(self); |
| 1041 | /* Abort all pipes. Causes processes waiting for transfer to wake. */ |
| 1042 | for (i = 0; i < USB_MAX_ENDPOINTS; i++) { |
| 1043 | for (dir = OUT; dir <= IN; dir++) { |
| 1044 | sce = &sc->sc_endpoints[i][dir]; |
| 1045 | if (sce->pipeh) |
| 1046 | usbd_abort_pipe(sce->pipeh); |
| 1047 | } |
| 1048 | } |
| 1049 | |
| 1050 | mutex_enter(&sc->sc_lock); |
| 1051 | if (--sc->sc_refcnt >= 0) { |
| 1052 | /* Wake everyone */ |
| 1053 | for (i = 0; i < USB_MAX_ENDPOINTS; i++) |
| 1054 | cv_signal(&sc->sc_endpoints[i][IN].cv); |
| 1055 | /* Wait for processes to go away. */ |
| 1056 | usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); |
| 1057 | } |
| 1058 | mutex_exit(&sc->sc_lock); |
| 1059 | |
| 1060 | /* locate the major number */ |
| 1061 | maj = cdevsw_lookup_major(&ugen_cdevsw); |
| 1062 | |
| 1063 | /* Nuke the vnodes for any open instances (calls close). */ |
| 1064 | mn = device_unit(self) * USB_MAX_ENDPOINTS; |
| 1065 | vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); |
| 1066 | |
| 1067 | usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); |
| 1068 | |
| 1069 | for (i = 0; i < USB_MAX_ENDPOINTS; i++) { |
| 1070 | for (dir = OUT; dir <= IN; dir++) { |
| 1071 | sce = &sc->sc_endpoints[i][dir]; |
| 1072 | seldestroy(&sce->rsel); |
| 1073 | cv_destroy(&sce->cv); |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | cv_destroy(&sc->sc_detach_cv); |
| 1078 | mutex_destroy(&sc->sc_lock); |
| 1079 | |
| 1080 | return 0; |
| 1081 | } |
| 1082 | |
| 1083 | Static void |
| 1084 | ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) |
| 1085 | { |
| 1086 | struct ugen_endpoint *sce = addr; |
| 1087 | struct ugen_softc *sc = sce->sc; |
| 1088 | uint32_t count; |
| 1089 | u_char *ibuf; |
| 1090 | |
| 1091 | if (status == USBD_CANCELLED) |
| 1092 | return; |
| 1093 | |
| 1094 | if (status != USBD_NORMAL_COMPLETION) { |
| 1095 | DPRINTF(("ugenintr: status=%d\n" , status)); |
| 1096 | if (status == USBD_STALLED) |
| 1097 | usbd_clear_endpoint_stall_async(sce->pipeh); |
| 1098 | return; |
| 1099 | } |
| 1100 | |
| 1101 | usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); |
| 1102 | ibuf = sce->ibuf; |
| 1103 | |
| 1104 | DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n" , |
| 1105 | xfer, status, count)); |
| 1106 | DPRINTFN(5, (" data = %02x %02x %02x\n" , |
| 1107 | ibuf[0], ibuf[1], ibuf[2])); |
| 1108 | |
| 1109 | (void)b_to_q(ibuf, count, &sce->q); |
| 1110 | |
| 1111 | mutex_enter(&sc->sc_lock); |
| 1112 | if (sce->state & UGEN_ASLP) { |
| 1113 | sce->state &= ~UGEN_ASLP; |
| 1114 | DPRINTFN(5, ("ugen_intr: waking %p\n" , sce)); |
| 1115 | cv_signal(&sce->cv); |
| 1116 | } |
| 1117 | mutex_exit(&sc->sc_lock); |
| 1118 | selnotify(&sce->rsel, 0, 0); |
| 1119 | } |
| 1120 | |
| 1121 | Static void |
| 1122 | ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, |
| 1123 | usbd_status status) |
| 1124 | { |
| 1125 | struct isoreq *req = addr; |
| 1126 | struct ugen_endpoint *sce = req->sce; |
| 1127 | struct ugen_softc *sc = sce->sc; |
| 1128 | uint32_t count, n; |
| 1129 | int i, isize; |
| 1130 | |
| 1131 | /* Return if we are aborting. */ |
| 1132 | if (status == USBD_CANCELLED) |
| 1133 | return; |
| 1134 | |
| 1135 | usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); |
| 1136 | DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n" , |
| 1137 | (long)(req - sce->isoreqs), count)); |
| 1138 | |
| 1139 | /* throw away oldest input if the buffer is full */ |
| 1140 | if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { |
| 1141 | sce->cur += count; |
| 1142 | if(sce->cur >= sce->limit) |
| 1143 | sce->cur = sce->ibuf + (sce->limit - sce->cur); |
| 1144 | DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n" , |
| 1145 | count)); |
| 1146 | } |
| 1147 | |
| 1148 | isize = UGETW(sce->edesc->wMaxPacketSize); |
| 1149 | for (i = 0; i < UGEN_NISORFRMS; i++) { |
| 1150 | uint32_t actlen = req->sizes[i]; |
| 1151 | char const *tbuf = (char const *)req->dmabuf + isize * i; |
| 1152 | |
| 1153 | /* copy data to buffer */ |
| 1154 | while (actlen > 0) { |
| 1155 | n = min(actlen, sce->limit - sce->fill); |
| 1156 | memcpy(sce->fill, tbuf, n); |
| 1157 | |
| 1158 | tbuf += n; |
| 1159 | actlen -= n; |
| 1160 | sce->fill += n; |
| 1161 | if(sce->fill == sce->limit) |
| 1162 | sce->fill = sce->ibuf; |
| 1163 | } |
| 1164 | |
| 1165 | /* setup size for next transfer */ |
| 1166 | req->sizes[i] = isize; |
| 1167 | } |
| 1168 | |
| 1169 | usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, |
| 1170 | ugen_isoc_rintr); |
| 1171 | (void)usbd_transfer(xfer); |
| 1172 | |
| 1173 | mutex_enter(&sc->sc_lock); |
| 1174 | if (sce->state & UGEN_ASLP) { |
| 1175 | sce->state &= ~UGEN_ASLP; |
| 1176 | DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n" , sce)); |
| 1177 | cv_signal(&sce->cv); |
| 1178 | } |
| 1179 | mutex_exit(&sc->sc_lock); |
| 1180 | selnotify(&sce->rsel, 0, 0); |
| 1181 | } |
| 1182 | |
| 1183 | Static void |
| 1184 | ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, |
| 1185 | usbd_status status) |
| 1186 | { |
| 1187 | struct ugen_endpoint *sce = addr; |
| 1188 | struct ugen_softc *sc = sce->sc; |
| 1189 | uint32_t count, n; |
| 1190 | char const *tbuf; |
| 1191 | usbd_status err; |
| 1192 | |
| 1193 | /* Return if we are aborting. */ |
| 1194 | if (status == USBD_CANCELLED) |
| 1195 | return; |
| 1196 | |
| 1197 | if (status != USBD_NORMAL_COMPLETION) { |
| 1198 | DPRINTF(("ugen_bulkra_intr: status=%d\n" , status)); |
| 1199 | sce->state |= UGEN_RA_WB_STOP; |
| 1200 | if (status == USBD_STALLED) |
| 1201 | usbd_clear_endpoint_stall_async(sce->pipeh); |
| 1202 | return; |
| 1203 | } |
| 1204 | |
| 1205 | usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); |
| 1206 | |
| 1207 | /* Keep track of how much is in the buffer. */ |
| 1208 | sce->ra_wb_used += count; |
| 1209 | |
| 1210 | /* Copy data to buffer. */ |
| 1211 | tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); |
| 1212 | n = min(count, sce->limit - sce->fill); |
| 1213 | memcpy(sce->fill, tbuf, n); |
| 1214 | tbuf += n; |
| 1215 | count -= n; |
| 1216 | sce->fill += n; |
| 1217 | if (sce->fill == sce->limit) |
| 1218 | sce->fill = sce->ibuf; |
| 1219 | if (count > 0) { |
| 1220 | memcpy(sce->fill, tbuf, count); |
| 1221 | sce->fill += count; |
| 1222 | } |
| 1223 | |
| 1224 | /* Set up the next request if necessary. */ |
| 1225 | n = (sce->limit - sce->ibuf) - sce->ra_wb_used; |
| 1226 | if (n > 0) { |
| 1227 | usbd_setup_xfer(xfer, sce, NULL, min(n, sce->ra_wb_xferlen), 0, |
| 1228 | USBD_NO_TIMEOUT, ugen_bulkra_intr); |
| 1229 | err = usbd_transfer(xfer); |
| 1230 | if (err != USBD_IN_PROGRESS) { |
| 1231 | printf("usbd_bulkra_intr: error=%d\n" , err); |
| 1232 | /* |
| 1233 | * The transfer has not been queued. Setting STOP |
| 1234 | * will make us try again at the next read. |
| 1235 | */ |
| 1236 | sce->state |= UGEN_RA_WB_STOP; |
| 1237 | } |
| 1238 | } |
| 1239 | else |
| 1240 | sce->state |= UGEN_RA_WB_STOP; |
| 1241 | |
| 1242 | mutex_enter(&sc->sc_lock); |
| 1243 | if (sce->state & UGEN_ASLP) { |
| 1244 | sce->state &= ~UGEN_ASLP; |
| 1245 | DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n" , sce)); |
| 1246 | cv_signal(&sce->cv); |
| 1247 | } |
| 1248 | mutex_exit(&sc->sc_lock); |
| 1249 | selnotify(&sce->rsel, 0, 0); |
| 1250 | } |
| 1251 | |
| 1252 | Static void |
| 1253 | ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, |
| 1254 | usbd_status status) |
| 1255 | { |
| 1256 | struct ugen_endpoint *sce = addr; |
| 1257 | struct ugen_softc *sc = sce->sc; |
| 1258 | uint32_t count, n; |
| 1259 | char *tbuf; |
| 1260 | usbd_status err; |
| 1261 | |
| 1262 | /* Return if we are aborting. */ |
| 1263 | if (status == USBD_CANCELLED) |
| 1264 | return; |
| 1265 | |
| 1266 | if (status != USBD_NORMAL_COMPLETION) { |
| 1267 | DPRINTF(("ugen_bulkwb_intr: status=%d\n" , status)); |
| 1268 | sce->state |= UGEN_RA_WB_STOP; |
| 1269 | if (status == USBD_STALLED) |
| 1270 | usbd_clear_endpoint_stall_async(sce->pipeh); |
| 1271 | return; |
| 1272 | } |
| 1273 | |
| 1274 | usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); |
| 1275 | |
| 1276 | /* Keep track of how much is in the buffer. */ |
| 1277 | sce->ra_wb_used -= count; |
| 1278 | |
| 1279 | /* Update buffer pointers. */ |
| 1280 | sce->cur += count; |
| 1281 | if (sce->cur >= sce->limit) |
| 1282 | sce->cur = sce->ibuf + (sce->cur - sce->limit); |
| 1283 | |
| 1284 | /* Set up next request if necessary. */ |
| 1285 | if (sce->ra_wb_used > 0) { |
| 1286 | /* copy data from buffer */ |
| 1287 | tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); |
| 1288 | count = min(sce->ra_wb_used, sce->ra_wb_xferlen); |
| 1289 | n = min(count, sce->limit - sce->cur); |
| 1290 | memcpy(tbuf, sce->cur, n); |
| 1291 | tbuf += n; |
| 1292 | if (count - n > 0) |
| 1293 | memcpy(tbuf, sce->ibuf, count - n); |
| 1294 | |
| 1295 | usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, |
| 1296 | ugen_bulkwb_intr); |
| 1297 | err = usbd_transfer(xfer); |
| 1298 | if (err != USBD_IN_PROGRESS) { |
| 1299 | printf("usbd_bulkwb_intr: error=%d\n" , err); |
| 1300 | /* |
| 1301 | * The transfer has not been queued. Setting STOP |
| 1302 | * will make us try again at the next write. |
| 1303 | */ |
| 1304 | sce->state |= UGEN_RA_WB_STOP; |
| 1305 | } |
| 1306 | } |
| 1307 | else |
| 1308 | sce->state |= UGEN_RA_WB_STOP; |
| 1309 | |
| 1310 | mutex_enter(&sc->sc_lock); |
| 1311 | if (sce->state & UGEN_ASLP) { |
| 1312 | sce->state &= ~UGEN_ASLP; |
| 1313 | DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n" , sce)); |
| 1314 | cv_signal(&sce->cv); |
| 1315 | } |
| 1316 | mutex_exit(&sc->sc_lock); |
| 1317 | selnotify(&sce->rsel, 0, 0); |
| 1318 | } |
| 1319 | |
| 1320 | Static usbd_status |
| 1321 | ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) |
| 1322 | { |
| 1323 | struct usbd_interface *iface; |
| 1324 | usb_endpoint_descriptor_t *ed; |
| 1325 | usbd_status err; |
| 1326 | struct ugen_endpoint *sce; |
| 1327 | uint8_t niface, nendpt, endptno, endpt; |
| 1328 | int dir; |
| 1329 | |
| 1330 | DPRINTFN(15, ("ugen_set_interface %d %d\n" , ifaceidx, altno)); |
| 1331 | |
| 1332 | err = usbd_interface_count(sc->sc_udev, &niface); |
| 1333 | if (err) |
| 1334 | return err; |
| 1335 | if (ifaceidx < 0 || ifaceidx >= niface) |
| 1336 | return USBD_INVAL; |
| 1337 | |
| 1338 | err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); |
| 1339 | if (err) |
| 1340 | return err; |
| 1341 | err = usbd_endpoint_count(iface, &nendpt); |
| 1342 | if (err) |
| 1343 | return err; |
| 1344 | |
| 1345 | /* change setting */ |
| 1346 | err = usbd_set_interface(iface, altno); |
| 1347 | if (err) |
| 1348 | return err; |
| 1349 | |
| 1350 | err = usbd_endpoint_count(iface, &nendpt); |
| 1351 | if (err) |
| 1352 | return err; |
| 1353 | |
| 1354 | ugen_clear_endpoints(sc); |
| 1355 | |
| 1356 | for (endptno = 0; endptno < nendpt; endptno++) { |
| 1357 | ed = usbd_interface2endpoint_descriptor(iface,endptno); |
| 1358 | KASSERT(ed != NULL); |
| 1359 | endpt = ed->bEndpointAddress; |
| 1360 | dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; |
| 1361 | sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; |
| 1362 | sce->sc = sc; |
| 1363 | sce->edesc = ed; |
| 1364 | sce->iface = iface; |
| 1365 | } |
| 1366 | return 0; |
| 1367 | } |
| 1368 | |
| 1369 | /* Retrieve a complete descriptor for a certain device and index. */ |
| 1370 | Static usb_config_descriptor_t * |
| 1371 | ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) |
| 1372 | { |
| 1373 | usb_config_descriptor_t *cdesc, *tdesc, cdescr; |
| 1374 | int len; |
| 1375 | usbd_status err; |
| 1376 | |
| 1377 | if (index == USB_CURRENT_CONFIG_INDEX) { |
| 1378 | tdesc = usbd_get_config_descriptor(sc->sc_udev); |
| 1379 | len = UGETW(tdesc->wTotalLength); |
| 1380 | if (lenp) |
| 1381 | *lenp = len; |
| 1382 | cdesc = kmem_alloc(len, KM_SLEEP); |
| 1383 | memcpy(cdesc, tdesc, len); |
| 1384 | DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n" , len)); |
| 1385 | } else { |
| 1386 | err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); |
| 1387 | if (err) |
| 1388 | return 0; |
| 1389 | len = UGETW(cdescr.wTotalLength); |
| 1390 | DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n" , index, len)); |
| 1391 | if (lenp) |
| 1392 | *lenp = len; |
| 1393 | cdesc = kmem_alloc(len, KM_SLEEP); |
| 1394 | err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); |
| 1395 | if (err) { |
| 1396 | kmem_free(cdesc, len); |
| 1397 | return 0; |
| 1398 | } |
| 1399 | } |
| 1400 | return cdesc; |
| 1401 | } |
| 1402 | |
| 1403 | Static int |
| 1404 | ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) |
| 1405 | { |
| 1406 | struct usbd_interface *iface; |
| 1407 | usbd_status err; |
| 1408 | |
| 1409 | err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); |
| 1410 | if (err) |
| 1411 | return -1; |
| 1412 | return usbd_get_interface_altindex(iface); |
| 1413 | } |
| 1414 | |
| 1415 | Static int |
| 1416 | ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, |
| 1417 | void *addr, int flag, struct lwp *l) |
| 1418 | { |
| 1419 | struct ugen_endpoint *sce; |
| 1420 | usbd_status err; |
| 1421 | struct usbd_interface *iface; |
| 1422 | struct usb_config_desc *cd; |
| 1423 | usb_config_descriptor_t *cdesc; |
| 1424 | struct usb_interface_desc *id; |
| 1425 | usb_interface_descriptor_t *idesc; |
| 1426 | struct usb_endpoint_desc *ed; |
| 1427 | usb_endpoint_descriptor_t *edesc; |
| 1428 | struct usb_alt_interface *ai; |
| 1429 | struct usb_string_desc *si; |
| 1430 | uint8_t conf, alt; |
| 1431 | int cdesclen; |
| 1432 | int error; |
| 1433 | |
| 1434 | DPRINTFN(5, ("ugenioctl: cmd=%08lx\n" , cmd)); |
| 1435 | if (sc->sc_dying) |
| 1436 | return EIO; |
| 1437 | |
| 1438 | switch (cmd) { |
| 1439 | case FIONBIO: |
| 1440 | /* All handled in the upper FS layer. */ |
| 1441 | return 0; |
| 1442 | case USB_SET_SHORT_XFER: |
| 1443 | if (endpt == USB_CONTROL_ENDPOINT) |
| 1444 | return EINVAL; |
| 1445 | /* This flag only affects read */ |
| 1446 | sce = &sc->sc_endpoints[endpt][IN]; |
| 1447 | if (sce == NULL || sce->pipeh == NULL) |
| 1448 | return EINVAL; |
| 1449 | if (*(int *)addr) |
| 1450 | sce->state |= UGEN_SHORT_OK; |
| 1451 | else |
| 1452 | sce->state &= ~UGEN_SHORT_OK; |
| 1453 | return 0; |
| 1454 | case USB_SET_TIMEOUT: |
| 1455 | sce = &sc->sc_endpoints[endpt][IN]; |
| 1456 | if (sce == NULL |
| 1457 | /* XXX this shouldn't happen, but the distinction between |
| 1458 | input and output pipes isn't clear enough. |
| 1459 | || sce->pipeh == NULL */ |
| 1460 | ) |
| 1461 | return EINVAL; |
| 1462 | sce->timeout = *(int *)addr; |
| 1463 | return 0; |
| 1464 | case USB_SET_BULK_RA: |
| 1465 | if (endpt == USB_CONTROL_ENDPOINT) |
| 1466 | return EINVAL; |
| 1467 | sce = &sc->sc_endpoints[endpt][IN]; |
| 1468 | if (sce == NULL || sce->pipeh == NULL) |
| 1469 | return EINVAL; |
| 1470 | edesc = sce->edesc; |
| 1471 | if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) |
| 1472 | return EINVAL; |
| 1473 | |
| 1474 | if (*(int *)addr) { |
| 1475 | /* Only turn RA on if it's currently off. */ |
| 1476 | if (sce->state & UGEN_BULK_RA) |
| 1477 | return 0; |
| 1478 | |
| 1479 | if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) |
| 1480 | /* shouldn't happen */ |
| 1481 | return EINVAL; |
| 1482 | error = usbd_create_xfer(sce->pipeh, |
| 1483 | sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); |
| 1484 | if (error) |
| 1485 | return error; |
| 1486 | sce->ra_wb_xferlen = sce->ra_wb_reqsize; |
| 1487 | sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); |
| 1488 | sce->fill = sce->cur = sce->ibuf; |
| 1489 | sce->limit = sce->ibuf + sce->ra_wb_bufsize; |
| 1490 | sce->ra_wb_used = 0; |
| 1491 | sce->state |= UGEN_BULK_RA; |
| 1492 | sce->state &= ~UGEN_RA_WB_STOP; |
| 1493 | /* Now start reading. */ |
| 1494 | usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, |
| 1495 | min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), |
| 1496 | 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); |
| 1497 | err = usbd_transfer(sce->ra_wb_xfer); |
| 1498 | if (err != USBD_IN_PROGRESS) { |
| 1499 | sce->state &= ~UGEN_BULK_RA; |
| 1500 | kmem_free(sce->ibuf, sce->ra_wb_bufsize); |
| 1501 | sce->ibuf = NULL; |
| 1502 | usbd_destroy_xfer(sce->ra_wb_xfer); |
| 1503 | return EIO; |
| 1504 | } |
| 1505 | } else { |
| 1506 | /* Only turn RA off if it's currently on. */ |
| 1507 | if (!(sce->state & UGEN_BULK_RA)) |
| 1508 | return 0; |
| 1509 | |
| 1510 | sce->state &= ~UGEN_BULK_RA; |
| 1511 | usbd_abort_pipe(sce->pipeh); |
| 1512 | usbd_destroy_xfer(sce->ra_wb_xfer); |
| 1513 | /* |
| 1514 | * XXX Discard whatever's in the buffer, but we |
| 1515 | * should keep it around and drain the buffer |
| 1516 | * instead. |
| 1517 | */ |
| 1518 | kmem_free(sce->ibuf, sce->ra_wb_bufsize); |
| 1519 | sce->ibuf = NULL; |
| 1520 | } |
| 1521 | return 0; |
| 1522 | case USB_SET_BULK_WB: |
| 1523 | if (endpt == USB_CONTROL_ENDPOINT) |
| 1524 | return EINVAL; |
| 1525 | sce = &sc->sc_endpoints[endpt][OUT]; |
| 1526 | if (sce == NULL || sce->pipeh == NULL) |
| 1527 | return EINVAL; |
| 1528 | edesc = sce->edesc; |
| 1529 | if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) |
| 1530 | return EINVAL; |
| 1531 | |
| 1532 | if (*(int *)addr) { |
| 1533 | /* Only turn WB on if it's currently off. */ |
| 1534 | if (sce->state & UGEN_BULK_WB) |
| 1535 | return 0; |
| 1536 | |
| 1537 | if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) |
| 1538 | /* shouldn't happen */ |
| 1539 | return EINVAL; |
| 1540 | error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, |
| 1541 | 0, 0, &sce->ra_wb_xfer); |
| 1542 | sce->ra_wb_xferlen = sce->ra_wb_reqsize; |
| 1543 | sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); |
| 1544 | sce->fill = sce->cur = sce->ibuf; |
| 1545 | sce->limit = sce->ibuf + sce->ra_wb_bufsize; |
| 1546 | sce->ra_wb_used = 0; |
| 1547 | sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; |
| 1548 | } else { |
| 1549 | /* Only turn WB off if it's currently on. */ |
| 1550 | if (!(sce->state & UGEN_BULK_WB)) |
| 1551 | return 0; |
| 1552 | |
| 1553 | sce->state &= ~UGEN_BULK_WB; |
| 1554 | /* |
| 1555 | * XXX Discard whatever's in the buffer, but we |
| 1556 | * should keep it around and keep writing to |
| 1557 | * drain the buffer instead. |
| 1558 | */ |
| 1559 | usbd_abort_pipe(sce->pipeh); |
| 1560 | usbd_destroy_xfer(sce->ra_wb_xfer); |
| 1561 | kmem_free(sce->ibuf, sce->ra_wb_bufsize); |
| 1562 | sce->ibuf = NULL; |
| 1563 | } |
| 1564 | return 0; |
| 1565 | case USB_SET_BULK_RA_OPT: |
| 1566 | case USB_SET_BULK_WB_OPT: |
| 1567 | { |
| 1568 | struct usb_bulk_ra_wb_opt *opt; |
| 1569 | |
| 1570 | if (endpt == USB_CONTROL_ENDPOINT) |
| 1571 | return EINVAL; |
| 1572 | opt = (struct usb_bulk_ra_wb_opt *)addr; |
| 1573 | if (cmd == USB_SET_BULK_RA_OPT) |
| 1574 | sce = &sc->sc_endpoints[endpt][IN]; |
| 1575 | else |
| 1576 | sce = &sc->sc_endpoints[endpt][OUT]; |
| 1577 | if (sce == NULL || sce->pipeh == NULL) |
| 1578 | return EINVAL; |
| 1579 | if (opt->ra_wb_buffer_size < 1 || |
| 1580 | opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || |
| 1581 | opt->ra_wb_request_size < 1 || |
| 1582 | opt->ra_wb_request_size > opt->ra_wb_buffer_size) |
| 1583 | return EINVAL; |
| 1584 | /* |
| 1585 | * XXX These changes do not take effect until the |
| 1586 | * next time RA/WB mode is enabled but they ought to |
| 1587 | * take effect immediately. |
| 1588 | */ |
| 1589 | sce->ra_wb_bufsize = opt->ra_wb_buffer_size; |
| 1590 | sce->ra_wb_reqsize = opt->ra_wb_request_size; |
| 1591 | return 0; |
| 1592 | } |
| 1593 | default: |
| 1594 | break; |
| 1595 | } |
| 1596 | |
| 1597 | if (endpt != USB_CONTROL_ENDPOINT) |
| 1598 | return EINVAL; |
| 1599 | |
| 1600 | switch (cmd) { |
| 1601 | #ifdef UGEN_DEBUG |
| 1602 | case USB_SETDEBUG: |
| 1603 | ugendebug = *(int *)addr; |
| 1604 | break; |
| 1605 | #endif |
| 1606 | case USB_GET_CONFIG: |
| 1607 | err = usbd_get_config(sc->sc_udev, &conf); |
| 1608 | if (err) |
| 1609 | return EIO; |
| 1610 | *(int *)addr = conf; |
| 1611 | break; |
| 1612 | case USB_SET_CONFIG: |
| 1613 | if (!(flag & FWRITE)) |
| 1614 | return EPERM; |
| 1615 | err = ugen_set_config(sc, *(int *)addr); |
| 1616 | switch (err) { |
| 1617 | case USBD_NORMAL_COMPLETION: |
| 1618 | break; |
| 1619 | case USBD_IN_USE: |
| 1620 | return EBUSY; |
| 1621 | default: |
| 1622 | return EIO; |
| 1623 | } |
| 1624 | break; |
| 1625 | case USB_GET_ALTINTERFACE: |
| 1626 | ai = (struct usb_alt_interface *)addr; |
| 1627 | err = usbd_device2interface_handle(sc->sc_udev, |
| 1628 | ai->uai_interface_index, &iface); |
| 1629 | if (err) |
| 1630 | return EINVAL; |
| 1631 | idesc = usbd_get_interface_descriptor(iface); |
| 1632 | if (idesc == NULL) |
| 1633 | return EIO; |
| 1634 | ai->uai_alt_no = idesc->bAlternateSetting; |
| 1635 | break; |
| 1636 | case USB_SET_ALTINTERFACE: |
| 1637 | if (!(flag & FWRITE)) |
| 1638 | return EPERM; |
| 1639 | ai = (struct usb_alt_interface *)addr; |
| 1640 | err = usbd_device2interface_handle(sc->sc_udev, |
| 1641 | ai->uai_interface_index, &iface); |
| 1642 | if (err) |
| 1643 | return EINVAL; |
| 1644 | err = ugen_set_interface(sc, ai->uai_interface_index, |
| 1645 | ai->uai_alt_no); |
| 1646 | if (err) |
| 1647 | return EINVAL; |
| 1648 | break; |
| 1649 | case USB_GET_NO_ALT: |
| 1650 | ai = (struct usb_alt_interface *)addr; |
| 1651 | cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); |
| 1652 | if (cdesc == NULL) |
| 1653 | return EINVAL; |
| 1654 | idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); |
| 1655 | if (idesc == NULL) { |
| 1656 | kmem_free(cdesc, cdesclen); |
| 1657 | return EINVAL; |
| 1658 | } |
| 1659 | ai->uai_alt_no = usbd_get_no_alts(cdesc, |
| 1660 | idesc->bInterfaceNumber); |
| 1661 | kmem_free(cdesc, cdesclen); |
| 1662 | break; |
| 1663 | case USB_GET_DEVICE_DESC: |
| 1664 | *(usb_device_descriptor_t *)addr = |
| 1665 | *usbd_get_device_descriptor(sc->sc_udev); |
| 1666 | break; |
| 1667 | case USB_GET_CONFIG_DESC: |
| 1668 | cd = (struct usb_config_desc *)addr; |
| 1669 | cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); |
| 1670 | if (cdesc == NULL) |
| 1671 | return EINVAL; |
| 1672 | cd->ucd_desc = *cdesc; |
| 1673 | kmem_free(cdesc, cdesclen); |
| 1674 | break; |
| 1675 | case USB_GET_INTERFACE_DESC: |
| 1676 | id = (struct usb_interface_desc *)addr; |
| 1677 | cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); |
| 1678 | if (cdesc == NULL) |
| 1679 | return EINVAL; |
| 1680 | if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && |
| 1681 | id->uid_alt_index == USB_CURRENT_ALT_INDEX) |
| 1682 | alt = ugen_get_alt_index(sc, id->uid_interface_index); |
| 1683 | else |
| 1684 | alt = id->uid_alt_index; |
| 1685 | idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); |
| 1686 | if (idesc == NULL) { |
| 1687 | kmem_free(cdesc, cdesclen); |
| 1688 | return EINVAL; |
| 1689 | } |
| 1690 | id->uid_desc = *idesc; |
| 1691 | kmem_free(cdesc, cdesclen); |
| 1692 | break; |
| 1693 | case USB_GET_ENDPOINT_DESC: |
| 1694 | ed = (struct usb_endpoint_desc *)addr; |
| 1695 | cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); |
| 1696 | if (cdesc == NULL) |
| 1697 | return EINVAL; |
| 1698 | if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && |
| 1699 | ed->ued_alt_index == USB_CURRENT_ALT_INDEX) |
| 1700 | alt = ugen_get_alt_index(sc, ed->ued_interface_index); |
| 1701 | else |
| 1702 | alt = ed->ued_alt_index; |
| 1703 | edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, |
| 1704 | alt, ed->ued_endpoint_index); |
| 1705 | if (edesc == NULL) { |
| 1706 | kmem_free(cdesc, cdesclen); |
| 1707 | return EINVAL; |
| 1708 | } |
| 1709 | ed->ued_desc = *edesc; |
| 1710 | kmem_free(cdesc, cdesclen); |
| 1711 | break; |
| 1712 | case USB_GET_FULL_DESC: |
| 1713 | { |
| 1714 | int len; |
| 1715 | struct iovec iov; |
| 1716 | struct uio uio; |
| 1717 | struct usb_full_desc *fd = (struct usb_full_desc *)addr; |
| 1718 | |
| 1719 | cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); |
| 1720 | if (cdesc == NULL) |
| 1721 | return EINVAL; |
| 1722 | len = cdesclen; |
| 1723 | if (len > fd->ufd_size) |
| 1724 | len = fd->ufd_size; |
| 1725 | iov.iov_base = (void *)fd->ufd_data; |
| 1726 | iov.iov_len = len; |
| 1727 | uio.uio_iov = &iov; |
| 1728 | uio.uio_iovcnt = 1; |
| 1729 | uio.uio_resid = len; |
| 1730 | uio.uio_offset = 0; |
| 1731 | uio.uio_rw = UIO_READ; |
| 1732 | uio.uio_vmspace = l->l_proc->p_vmspace; |
| 1733 | error = uiomove((void *)cdesc, len, &uio); |
| 1734 | kmem_free(cdesc, cdesclen); |
| 1735 | return error; |
| 1736 | } |
| 1737 | case USB_GET_STRING_DESC: { |
| 1738 | int len; |
| 1739 | si = (struct usb_string_desc *)addr; |
| 1740 | err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, |
| 1741 | si->usd_language_id, &si->usd_desc, &len); |
| 1742 | if (err) |
| 1743 | return EINVAL; |
| 1744 | break; |
| 1745 | } |
| 1746 | case USB_DO_REQUEST: |
| 1747 | { |
| 1748 | struct usb_ctl_request *ur = (void *)addr; |
| 1749 | int len = UGETW(ur->ucr_request.wLength); |
| 1750 | struct iovec iov; |
| 1751 | struct uio uio; |
| 1752 | void *ptr = 0; |
| 1753 | usbd_status xerr; |
| 1754 | |
| 1755 | error = 0; |
| 1756 | |
| 1757 | if (!(flag & FWRITE)) |
| 1758 | return EPERM; |
| 1759 | /* Avoid requests that would damage the bus integrity. */ |
| 1760 | if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && |
| 1761 | ur->ucr_request.bRequest == UR_SET_ADDRESS) || |
| 1762 | (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && |
| 1763 | ur->ucr_request.bRequest == UR_SET_CONFIG) || |
| 1764 | (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && |
| 1765 | ur->ucr_request.bRequest == UR_SET_INTERFACE)) |
| 1766 | return EINVAL; |
| 1767 | |
| 1768 | if (len < 0 || len > 32767) |
| 1769 | return EINVAL; |
| 1770 | if (len != 0) { |
| 1771 | iov.iov_base = (void *)ur->ucr_data; |
| 1772 | iov.iov_len = len; |
| 1773 | uio.uio_iov = &iov; |
| 1774 | uio.uio_iovcnt = 1; |
| 1775 | uio.uio_resid = len; |
| 1776 | uio.uio_offset = 0; |
| 1777 | uio.uio_rw = |
| 1778 | ur->ucr_request.bmRequestType & UT_READ ? |
| 1779 | UIO_READ : UIO_WRITE; |
| 1780 | uio.uio_vmspace = l->l_proc->p_vmspace; |
| 1781 | ptr = kmem_alloc(len, KM_SLEEP); |
| 1782 | if (uio.uio_rw == UIO_WRITE) { |
| 1783 | error = uiomove(ptr, len, &uio); |
| 1784 | if (error) |
| 1785 | goto ret; |
| 1786 | } |
| 1787 | } |
| 1788 | sce = &sc->sc_endpoints[endpt][IN]; |
| 1789 | xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, |
| 1790 | ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); |
| 1791 | if (xerr) { |
| 1792 | error = EIO; |
| 1793 | goto ret; |
| 1794 | } |
| 1795 | if (len != 0) { |
| 1796 | if (uio.uio_rw == UIO_READ) { |
| 1797 | size_t alen = min(len, ur->ucr_actlen); |
| 1798 | error = uiomove(ptr, alen, &uio); |
| 1799 | if (error) |
| 1800 | goto ret; |
| 1801 | } |
| 1802 | } |
| 1803 | ret: |
| 1804 | if (ptr) |
| 1805 | kmem_free(ptr, len); |
| 1806 | return error; |
| 1807 | } |
| 1808 | case USB_GET_DEVICEINFO: |
| 1809 | usbd_fill_deviceinfo(sc->sc_udev, |
| 1810 | (struct usb_device_info *)addr, 0); |
| 1811 | break; |
| 1812 | #ifdef COMPAT_30 |
| 1813 | case USB_GET_DEVICEINFO_OLD: |
| 1814 | usbd_fill_deviceinfo_old(sc->sc_udev, |
| 1815 | (struct usb_device_info_old *)addr, 0); |
| 1816 | |
| 1817 | break; |
| 1818 | #endif |
| 1819 | default: |
| 1820 | return EINVAL; |
| 1821 | } |
| 1822 | return 0; |
| 1823 | } |
| 1824 | |
| 1825 | int |
| 1826 | ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) |
| 1827 | { |
| 1828 | int endpt = UGENENDPOINT(dev); |
| 1829 | struct ugen_softc *sc; |
| 1830 | int error; |
| 1831 | |
| 1832 | sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); |
| 1833 | if (sc == NULL) |
| 1834 | return ENXIO; |
| 1835 | |
| 1836 | sc->sc_refcnt++; |
| 1837 | error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); |
| 1838 | if (--sc->sc_refcnt < 0) |
| 1839 | usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); |
| 1840 | return error; |
| 1841 | } |
| 1842 | |
| 1843 | int |
| 1844 | ugenpoll(dev_t dev, int events, struct lwp *l) |
| 1845 | { |
| 1846 | struct ugen_softc *sc; |
| 1847 | struct ugen_endpoint *sce_in, *sce_out; |
| 1848 | int revents = 0; |
| 1849 | |
| 1850 | sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); |
| 1851 | if (sc == NULL) |
| 1852 | return ENXIO; |
| 1853 | |
| 1854 | if (sc->sc_dying) |
| 1855 | return POLLHUP; |
| 1856 | |
| 1857 | if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) |
| 1858 | return ENODEV; |
| 1859 | |
| 1860 | sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; |
| 1861 | sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; |
| 1862 | if (sce_in == NULL && sce_out == NULL) |
| 1863 | return POLLERR; |
| 1864 | #ifdef DIAGNOSTIC |
| 1865 | if (!sce_in->edesc && !sce_out->edesc) { |
| 1866 | printf("ugenpoll: no edesc\n" ); |
| 1867 | return POLLERR; |
| 1868 | } |
| 1869 | /* It's possible to have only one pipe open. */ |
| 1870 | if (!sce_in->pipeh && !sce_out->pipeh) { |
| 1871 | printf("ugenpoll: no pipe\n" ); |
| 1872 | return POLLERR; |
| 1873 | } |
| 1874 | #endif |
| 1875 | |
| 1876 | mutex_enter(&sc->sc_lock); |
| 1877 | if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) |
| 1878 | switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { |
| 1879 | case UE_INTERRUPT: |
| 1880 | if (sce_in->q.c_cc > 0) |
| 1881 | revents |= events & (POLLIN | POLLRDNORM); |
| 1882 | else |
| 1883 | selrecord(l, &sce_in->rsel); |
| 1884 | break; |
| 1885 | case UE_ISOCHRONOUS: |
| 1886 | if (sce_in->cur != sce_in->fill) |
| 1887 | revents |= events & (POLLIN | POLLRDNORM); |
| 1888 | else |
| 1889 | selrecord(l, &sce_in->rsel); |
| 1890 | break; |
| 1891 | case UE_BULK: |
| 1892 | if (sce_in->state & UGEN_BULK_RA) { |
| 1893 | if (sce_in->ra_wb_used > 0) |
| 1894 | revents |= events & |
| 1895 | (POLLIN | POLLRDNORM); |
| 1896 | else |
| 1897 | selrecord(l, &sce_in->rsel); |
| 1898 | break; |
| 1899 | } |
| 1900 | /* |
| 1901 | * We have no easy way of determining if a read will |
| 1902 | * yield any data or a write will happen. |
| 1903 | * Pretend they will. |
| 1904 | */ |
| 1905 | revents |= events & (POLLIN | POLLRDNORM); |
| 1906 | break; |
| 1907 | default: |
| 1908 | break; |
| 1909 | } |
| 1910 | if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) |
| 1911 | switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { |
| 1912 | case UE_INTERRUPT: |
| 1913 | case UE_ISOCHRONOUS: |
| 1914 | /* XXX unimplemented */ |
| 1915 | break; |
| 1916 | case UE_BULK: |
| 1917 | if (sce_out->state & UGEN_BULK_WB) { |
| 1918 | if (sce_out->ra_wb_used < |
| 1919 | sce_out->limit - sce_out->ibuf) |
| 1920 | revents |= events & |
| 1921 | (POLLOUT | POLLWRNORM); |
| 1922 | else |
| 1923 | selrecord(l, &sce_out->rsel); |
| 1924 | break; |
| 1925 | } |
| 1926 | /* |
| 1927 | * We have no easy way of determining if a read will |
| 1928 | * yield any data or a write will happen. |
| 1929 | * Pretend they will. |
| 1930 | */ |
| 1931 | revents |= events & (POLLOUT | POLLWRNORM); |
| 1932 | break; |
| 1933 | default: |
| 1934 | break; |
| 1935 | } |
| 1936 | |
| 1937 | mutex_exit(&sc->sc_lock); |
| 1938 | |
| 1939 | return revents; |
| 1940 | } |
| 1941 | |
| 1942 | static void |
| 1943 | filt_ugenrdetach(struct knote *kn) |
| 1944 | { |
| 1945 | struct ugen_endpoint *sce = kn->kn_hook; |
| 1946 | struct ugen_softc *sc = sce->sc; |
| 1947 | |
| 1948 | mutex_enter(&sc->sc_lock); |
| 1949 | SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); |
| 1950 | mutex_exit(&sc->sc_lock); |
| 1951 | } |
| 1952 | |
| 1953 | static int |
| 1954 | filt_ugenread_intr(struct knote *kn, long hint) |
| 1955 | { |
| 1956 | struct ugen_endpoint *sce = kn->kn_hook; |
| 1957 | |
| 1958 | kn->kn_data = sce->q.c_cc; |
| 1959 | return kn->kn_data > 0; |
| 1960 | } |
| 1961 | |
| 1962 | static int |
| 1963 | filt_ugenread_isoc(struct knote *kn, long hint) |
| 1964 | { |
| 1965 | struct ugen_endpoint *sce = kn->kn_hook; |
| 1966 | |
| 1967 | if (sce->cur == sce->fill) |
| 1968 | return 0; |
| 1969 | |
| 1970 | if (sce->cur < sce->fill) |
| 1971 | kn->kn_data = sce->fill - sce->cur; |
| 1972 | else |
| 1973 | kn->kn_data = (sce->limit - sce->cur) + |
| 1974 | (sce->fill - sce->ibuf); |
| 1975 | |
| 1976 | return 1; |
| 1977 | } |
| 1978 | |
| 1979 | static int |
| 1980 | filt_ugenread_bulk(struct knote *kn, long hint) |
| 1981 | { |
| 1982 | struct ugen_endpoint *sce = kn->kn_hook; |
| 1983 | |
| 1984 | if (!(sce->state & UGEN_BULK_RA)) |
| 1985 | /* |
| 1986 | * We have no easy way of determining if a read will |
| 1987 | * yield any data or a write will happen. |
| 1988 | * So, emulate "seltrue". |
| 1989 | */ |
| 1990 | return filt_seltrue(kn, hint); |
| 1991 | |
| 1992 | if (sce->ra_wb_used == 0) |
| 1993 | return 0; |
| 1994 | |
| 1995 | kn->kn_data = sce->ra_wb_used; |
| 1996 | |
| 1997 | return 1; |
| 1998 | } |
| 1999 | |
| 2000 | static int |
| 2001 | filt_ugenwrite_bulk(struct knote *kn, long hint) |
| 2002 | { |
| 2003 | struct ugen_endpoint *sce = kn->kn_hook; |
| 2004 | |
| 2005 | if (!(sce->state & UGEN_BULK_WB)) |
| 2006 | /* |
| 2007 | * We have no easy way of determining if a read will |
| 2008 | * yield any data or a write will happen. |
| 2009 | * So, emulate "seltrue". |
| 2010 | */ |
| 2011 | return filt_seltrue(kn, hint); |
| 2012 | |
| 2013 | if (sce->ra_wb_used == sce->limit - sce->ibuf) |
| 2014 | return 0; |
| 2015 | |
| 2016 | kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; |
| 2017 | |
| 2018 | return 1; |
| 2019 | } |
| 2020 | |
| 2021 | static const struct filterops ugenread_intr_filtops = |
| 2022 | { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; |
| 2023 | |
| 2024 | static const struct filterops ugenread_isoc_filtops = |
| 2025 | { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; |
| 2026 | |
| 2027 | static const struct filterops ugenread_bulk_filtops = |
| 2028 | { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; |
| 2029 | |
| 2030 | static const struct filterops ugenwrite_bulk_filtops = |
| 2031 | { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; |
| 2032 | |
| 2033 | int |
| 2034 | ugenkqfilter(dev_t dev, struct knote *kn) |
| 2035 | { |
| 2036 | struct ugen_softc *sc; |
| 2037 | struct ugen_endpoint *sce; |
| 2038 | struct klist *klist; |
| 2039 | |
| 2040 | sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); |
| 2041 | if (sc == NULL) |
| 2042 | return ENXIO; |
| 2043 | |
| 2044 | if (sc->sc_dying) |
| 2045 | return ENXIO; |
| 2046 | |
| 2047 | if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) |
| 2048 | return ENODEV; |
| 2049 | |
| 2050 | switch (kn->kn_filter) { |
| 2051 | case EVFILT_READ: |
| 2052 | sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; |
| 2053 | if (sce == NULL) |
| 2054 | return EINVAL; |
| 2055 | |
| 2056 | klist = &sce->rsel.sel_klist; |
| 2057 | switch (sce->edesc->bmAttributes & UE_XFERTYPE) { |
| 2058 | case UE_INTERRUPT: |
| 2059 | kn->kn_fop = &ugenread_intr_filtops; |
| 2060 | break; |
| 2061 | case UE_ISOCHRONOUS: |
| 2062 | kn->kn_fop = &ugenread_isoc_filtops; |
| 2063 | break; |
| 2064 | case UE_BULK: |
| 2065 | kn->kn_fop = &ugenread_bulk_filtops; |
| 2066 | break; |
| 2067 | default: |
| 2068 | return EINVAL; |
| 2069 | } |
| 2070 | break; |
| 2071 | |
| 2072 | case EVFILT_WRITE: |
| 2073 | sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; |
| 2074 | if (sce == NULL) |
| 2075 | return EINVAL; |
| 2076 | |
| 2077 | klist = &sce->rsel.sel_klist; |
| 2078 | switch (sce->edesc->bmAttributes & UE_XFERTYPE) { |
| 2079 | case UE_INTERRUPT: |
| 2080 | case UE_ISOCHRONOUS: |
| 2081 | /* XXX poll doesn't support this */ |
| 2082 | return EINVAL; |
| 2083 | |
| 2084 | case UE_BULK: |
| 2085 | kn->kn_fop = &ugenwrite_bulk_filtops; |
| 2086 | break; |
| 2087 | default: |
| 2088 | return EINVAL; |
| 2089 | } |
| 2090 | break; |
| 2091 | |
| 2092 | default: |
| 2093 | return EINVAL; |
| 2094 | } |
| 2095 | |
| 2096 | kn->kn_hook = sce; |
| 2097 | |
| 2098 | mutex_enter(&sc->sc_lock); |
| 2099 | SLIST_INSERT_HEAD(klist, kn, kn_selnext); |
| 2100 | mutex_exit(&sc->sc_lock); |
| 2101 | |
| 2102 | return 0; |
| 2103 | } |
| 2104 | |