/* $OpenBSD: usbdi.c,v 1.12 2000/11/08 18:10:39 aaron Exp $ */ /* $NetBSD: usbdi.c,v 1.77 2000/09/23 21:02:04 augustss Exp $ */ /* $FreeBSD: src/sys/dev/usb/usbdi.c,v 1.28 1999/11/17 22:33:49 n_hibma Exp $ */ /* * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net) at * Carlstedt Research & Technology. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <sys/param.h> #include <sys/systm.h> #if defined(__NetBSD__) || defined(__OpenBSD__) #include <sys/kernel.h> #include <sys/device.h> #elif defined(__FreeBSD__) #include <sys/module.h> #include <sys/bus.h> #include <sys/conf.h> #include "usb_if.h" #if defined(DIAGNOSTIC) && defined(__i386__) #include <machine/cpu.h> #endif #endif #include <sys/malloc.h> #include <sys/proc.h> #include <machine/bus.h> #include <dev/usb/usb.h> #include <dev/usb/usbdi.h> #include <dev/usb/usbdi_util.h> #include <dev/usb/usbdivar.h> #include <dev/usb/usb_mem.h> #if defined(__FreeBSD__) #include "usb_if.h" #endif #ifdef USB_DEBUG #define DPRINTF(x) if (usbdebug) logprintf x #define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x extern int usbdebug; #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif Static usbd_status usbd_ar_pipe(usbd_pipe_handle pipe); Static void usbd_do_request_async_cb (usbd_xfer_handle, usbd_private_handle, usbd_status); Static void usbd_start_next(usbd_pipe_handle pipe); Static usbd_status usbd_open_pipe_ival (usbd_interface_handle, u_int8_t, u_int8_t, usbd_pipe_handle *, int); Static int usbd_nbuses = 0; void usbd_init(void) { usbd_nbuses++; } void usbd_finish(void) { --usbd_nbuses; } static __inline int usbd_xfer_isread(usbd_xfer_handle xfer) { if (xfer->rqflags & URQ_REQUEST) return (xfer->request.bmRequestType & UT_READ); else return (xfer->pipe->endpoint->edesc->bEndpointAddress & UE_DIR_IN); } #ifdef USB_DEBUG void usbd_dump_queue(usbd_pipe_handle pipe); void usbd_dump_queue(usbd_pipe_handle pipe) { usbd_xfer_handle xfer; printf("usbd_dump_queue: pipe=%p\n", pipe); for (xfer = SIMPLEQ_FIRST(&pipe->queue); xfer; xfer = SIMPLEQ_NEXT(xfer, next)) { printf(" xfer=%p\n", xfer); } } #endif usbd_status usbd_open_pipe(usbd_interface_handle iface, u_int8_t address, u_int8_t flags, usbd_pipe_handle *pipe) { return (usbd_open_pipe_ival(iface, address, flags, pipe, USBD_DEFAULT_INTERVAL)); } usbd_status usbd_open_pipe_ival(usbd_interface_handle iface, u_int8_t address, u_int8_t flags, usbd_pipe_handle *pipe, int ival) { usbd_pipe_handle p; struct usbd_endpoint *ep; usbd_status err; int i; DPRINTFN(3,("usbd_open_pipe: iface=%p address=0x%x flags=0x%x\n", iface, address, flags)); for (i = 0; i < iface->idesc->bNumEndpoints; i++) { ep = &iface->endpoints[i]; if (ep->edesc == NULL) return (USBD_IOERROR); if (ep->edesc->bEndpointAddress == address) goto found; } return (USBD_BAD_ADDRESS); found: if ((flags & USBD_EXCLUSIVE_USE) && ep->refcnt != 0) return (USBD_IN_USE); err = usbd_setup_pipe(iface->device, iface, ep, ival, &p); if (err) return (err); LIST_INSERT_HEAD(&iface->pipes, p, next); *pipe = p; return (USBD_NORMAL_COMPLETION); } usbd_status usbd_open_pipe_intr(usbd_interface_handle iface, u_int8_t address, u_int8_t flags, usbd_pipe_handle *pipe, usbd_private_handle priv, void *buffer, u_int32_t len, usbd_callback cb, int ival) { usbd_status err; usbd_xfer_handle xfer; usbd_pipe_handle ipipe; DPRINTFN(3,("usbd_open_pipe_intr: address=0x%x flags=0x%x len=%d\n", address, flags, len)); err = usbd_open_pipe_ival(iface, address, USBD_EXCLUSIVE_USE, &ipipe, ival); if (err) return (err); xfer = usbd_alloc_xfer(iface->device); if (xfer == NULL) { err = USBD_NOMEM; goto bad1; } usbd_setup_xfer(xfer, ipipe, priv, buffer, len, flags, USBD_NO_TIMEOUT, cb); ipipe->intrxfer = xfer; ipipe->repeat = 1; err = usbd_transfer(xfer); *pipe = ipipe; if (err != USBD_IN_PROGRESS) goto bad2; return (USBD_NORMAL_COMPLETION); bad2: ipipe->intrxfer = NULL; ipipe->repeat = 0; usbd_free_xfer(xfer); bad1: usbd_close_pipe(ipipe); return (err); } usbd_status usbd_close_pipe(usbd_pipe_handle pipe) { #ifdef DIAGNOSTIC if (pipe == NULL) { printf("usbd_close_pipe: pipe==NULL\n"); return (USBD_NORMAL_COMPLETION); } #endif if (--pipe->refcnt != 0) return (USBD_NORMAL_COMPLETION); if (SIMPLEQ_FIRST(&pipe->queue) != 0) return (USBD_PENDING_REQUESTS); LIST_REMOVE(pipe, next); pipe->endpoint->refcnt--; pipe->methods->close(pipe); #if defined(__NetBSD__) && defined(DIAGNOSTIC) if (callout_pending(&pipe->abort_handle)) { callout_stop(&pipe->abort_handle); printf("usbd_close_pipe: abort_handle pending"); } #endif if (pipe->intrxfer != NULL) usbd_free_xfer(pipe->intrxfer); free(pipe, M_USB); return (USBD_NORMAL_COMPLETION); } usbd_status usbd_transfer(usbd_xfer_handle xfer) { usbd_pipe_handle pipe = xfer->pipe; usb_dma_t *dmap = &xfer->dmabuf; usbd_status err; u_int size; int s; DPRINTFN(5,("usbd_transfer: xfer=%p, flags=%d, pipe=%p, running=%d\n", xfer, xfer->flags, pipe, pipe->running)); #ifdef USB_DEBUG if (usbdebug > 5) usbd_dump_queue(pipe); #endif xfer->done = 0; if (pipe->aborting) return (USBD_CANCELLED); size = xfer->length; /* If there is no buffer, allocate one. */ if (!(xfer->rqflags & URQ_DEV_DMABUF) && size != 0) { struct usbd_bus *bus = pipe->device->bus; #ifdef DIAGNOSTIC if (xfer->rqflags & URQ_AUTO_DMABUF) printf("usbd_transfer: has old buffer!\n"); #endif err = bus->methods->allocm(bus, dmap, size); if (err) return (err); xfer->rqflags |= URQ_AUTO_DMABUF; } /* Copy data if going out. */ if (!(xfer->flags & USBD_NO_COPY) && size != 0 && !usbd_xfer_isread(xfer)) memcpy(KERNADDR(dmap), xfer->buffer, size); err = pipe->methods->transfer(xfer); if (err != USBD_IN_PROGRESS && err) { /* The transfer has not been queued, so free buffer. */ if (xfer->rqflags & URQ_AUTO_DMABUF) { struct usbd_bus *bus = pipe->device->bus; bus->methods->freem(bus, &xfer->dmabuf); xfer->rqflags &= ~URQ_AUTO_DMABUF; } } if (!(xfer->flags & USBD_SYNCHRONOUS)) return (err); /* Sync transfer, wait for completion. */ if (err != USBD_IN_PROGRESS) return (err); s = splusb(); if (!xfer->done) { if (pipe->device->bus->use_polling) panic("usbd_transfer: not done\n"); /* XXX Temporary hack XXX */ if (xfer->flags & USBD_NO_TSLEEP) { int i; usbd_bus_handle bus = pipe->device->bus; int to = xfer->timeout * 1000; for (i = 0; i < to; i += 10) { delay(10); bus->methods->do_poll(bus); if (xfer->done) break; } /* XXX Is this right, what about the HC timeout? */ if (!xfer->done) { pipe->methods->abort(xfer); xfer->status = USBD_TIMEOUT; } } else /* XXX End hack XXX */ tsleep(xfer, PRIBIO, "usbsyn", 0); } splx(s); return (xfer->status); } /* Like usbd_transfer(), but waits for completion. */ usbd_status usbd_sync_transfer(usbd_xfer_handle xfer) { xfer->flags |= USBD_SYNCHRONOUS; return (usbd_transfer(xfer)); } void * usbd_alloc_buffer(usbd_xfer_handle xfer, u_int32_t size) { struct usbd_bus *bus = xfer->device->bus; usbd_status err; err = bus->methods->allocm(bus, &xfer->dmabuf, size); if (err) return (0); xfer->rqflags |= URQ_DEV_DMABUF; return (KERNADDR(&xfer->dmabuf)); } void usbd_free_buffer(usbd_xfer_handle xfer) { #ifdef DIAGNOSTIC if (!(xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))) { printf("usbd_free_buffer: no buffer\n"); return; } #endif xfer->rqflags &= ~(URQ_DEV_DMABUF | URQ_AUTO_DMABUF); xfer->device->bus->methods->freem(xfer->device->bus, &xfer->dmabuf); } void * usbd_get_buffer(usbd_xfer_handle xfer) { if (!(xfer->rqflags & URQ_DEV_DMABUF)) return (0); return (KERNADDR(&xfer->dmabuf)); } usbd_xfer_handle usbd_alloc_xfer(usbd_device_handle dev) { usbd_xfer_handle xfer; xfer = dev->bus->methods->allocx(dev->bus); if (xfer == NULL) return (NULL); xfer->device = dev; usb_callout_init(xfer->timeout_handle); DPRINTFN(5,("usbd_alloc_xfer() = %p\n", xfer)); return (xfer); } usbd_status usbd_free_xfer(usbd_xfer_handle xfer) { DPRINTFN(5,("usbd_free_xfer: %p\n", xfer)); if (xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF)) usbd_free_buffer(xfer); #if defined(__NetBSD__) && defined(DIAGNOSTIC) if (callout_pending(&xfer->timeout_handle)) { callout_stop(&xfer->timeout_handle); printf("usbd_free_xfer: timout_handle pending"); } #endif xfer->device->bus->methods->freex(xfer->device->bus, xfer); return (USBD_NORMAL_COMPLETION); } void usbd_setup_xfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe, usbd_private_handle priv, void *buffer, u_int32_t length, u_int16_t flags, u_int32_t timeout, usbd_callback callback) { xfer->pipe = pipe; xfer->priv = priv; xfer->buffer = buffer; xfer->length = length; xfer->actlen = 0; xfer->flags = flags; xfer->timeout = timeout; xfer->status = USBD_NOT_STARTED; xfer->callback = callback; xfer->rqflags &= ~URQ_REQUEST; xfer->nframes = 0; } void usbd_setup_default_xfer(usbd_xfer_handle xfer, usbd_device_handle dev, usbd_private_handle priv, u_int32_t timeout, usb_device_request_t *req, void *buffer, u_int32_t length, u_int16_t flags, usbd_callback callback) { xfer->pipe = dev->default_pipe; xfer->priv = priv; xfer->buffer = buffer; xfer->length = length; xfer->actlen = 0; xfer->flags = flags; xfer->timeout = timeout; xfer->status = USBD_NOT_STARTED; xfer->callback = callback; xfer->request = *req; xfer->rqflags |= URQ_REQUEST; xfer->nframes = 0; } void usbd_setup_isoc_xfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe, usbd_private_handle priv, u_int16_t *frlengths, u_int32_t nframes, u_int16_t flags, usbd_callback callback) { xfer->pipe = pipe; xfer->priv = priv; xfer->buffer = 0; xfer->length = 0; xfer->actlen = 0; xfer->flags = flags; xfer->timeout = USBD_NO_TIMEOUT; xfer->status = USBD_NOT_STARTED; xfer->callback = callback; xfer->rqflags &= ~URQ_REQUEST; xfer->frlengths = frlengths; xfer->nframes = nframes; } void usbd_get_xfer_status(usbd_xfer_handle xfer, usbd_private_handle *priv, void **buffer, u_int32_t *count, usbd_status *status) { if (priv != NULL) *priv = xfer->priv; if (buffer != NULL) *buffer = xfer->buffer; if (count != NULL) *count = xfer->actlen; if (status != NULL) *status = xfer->status; } usb_config_descriptor_t * usbd_get_config_descriptor(usbd_device_handle dev) { #ifdef DIAGNOSTIC if (dev == NULL) { printf("usbd_get_config_descriptor: dev == NULL\n"); return (NULL); } #endif return (dev->cdesc); } usb_interface_descriptor_t * usbd_get_interface_descriptor(usbd_interface_handle iface) { #ifdef DIAGNOSTIC if (iface == NULL) { printf("usbd_get_interface_descriptor: dev == NULL\n"); return (NULL); } #endif return (iface->idesc); } usb_device_descriptor_t * usbd_get_device_descriptor(usbd_device_handle dev) { return (&dev->ddesc); } usb_endpoint_descriptor_t * usbd_interface2endpoint_descriptor(usbd_interface_handle iface, u_int8_t index) { if (index >= iface->idesc->bNumEndpoints) return (0); return (iface->endpoints[index].edesc); } usbd_status usbd_abort_pipe(usbd_pipe_handle pipe) { usbd_status err; int s; #ifdef DIAGNOSTIC if (pipe == NULL) { printf("usbd_close_pipe: pipe==NULL\n"); return (USBD_NORMAL_COMPLETION); } #endif s = splusb(); err = usbd_ar_pipe(pipe); splx(s); return (err); } usbd_status usbd_clear_endpoint_stall(usbd_pipe_handle pipe) { usbd_device_handle dev = pipe->device; usb_device_request_t req; usbd_status err; DPRINTFN(8, ("usbd_clear_endpoint_stall\n")); /* * Clearing en endpoint stall resets the enpoint toggle, so * do the same to the HC toggle. */ pipe->methods->cleartoggle(pipe); req.bmRequestType = UT_WRITE_ENDPOINT; req.bRequest = UR_CLEAR_FEATURE; USETW(req.wValue, UF_ENDPOINT_HALT); USETW(req.wIndex, pipe->endpoint->edesc->bEndpointAddress); USETW(req.wLength, 0); err = usbd_do_request(dev, &req, 0); #if 0 XXX should we do this? if (!err) { pipe->state = USBD_PIPE_ACTIVE; /* XXX activate pipe */ } #endif return (err); } usbd_status usbd_clear_endpoint_stall_async(usbd_pipe_handle pipe) { usbd_device_handle dev = pipe->device; usb_device_request_t req; usbd_status err; pipe->methods->cleartoggle(pipe); req.bmRequestType = UT_WRITE_ENDPOINT; req.bRequest = UR_CLEAR_FEATURE; USETW(req.wValue, UF_ENDPOINT_HALT); USETW(req.wIndex, pipe->endpoint->edesc->bEndpointAddress); USETW(req.wLength, 0); err = usbd_do_request_async(dev, &req, 0); return (err); } void usbd_clear_endpoint_toggle(usbd_pipe_handle pipe); /* XXXXX */ void usbd_clear_endpoint_toggle(usbd_pipe_handle pipe) { pipe->methods->cleartoggle(pipe); } usbd_status usbd_endpoint_count(usbd_interface_handle iface, u_int8_t *count) { #ifdef DIAGNOSTIC if (iface == NULL || iface->idesc == NULL) { printf("usbd_endpoint_count: NULL pointer\n"); return (USBD_INVAL); } #endif *count = iface->idesc->bNumEndpoints; return (USBD_NORMAL_COMPLETION); } usbd_status usbd_interface_count(usbd_device_handle dev, u_int8_t *count) { if (dev->cdesc == NULL) return (USBD_NOT_CONFIGURED); *count = dev->cdesc->bNumInterface; return (USBD_NORMAL_COMPLETION); } usbd_status usbd_interface2device_handle(usbd_interface_handle iface, usbd_device_handle *dev) { *dev = iface->device; return (USBD_NORMAL_COMPLETION); } usbd_status usbd_device2interface_handle(usbd_device_handle dev, u_int8_t ifaceno, usbd_interface_handle *iface) { if (dev->cdesc == NULL) return (USBD_NOT_CONFIGURED); if (ifaceno >= dev->cdesc->bNumInterface) return (USBD_INVAL); *iface = &dev->ifaces[ifaceno]; return (USBD_NORMAL_COMPLETION); } usbd_device_handle usbd_pipe2device_handle(usbd_pipe_handle pipe) { return (pipe->device); } /* XXXX use altno */ usbd_status usbd_set_interface(usbd_interface_handle iface, int altidx) { usb_device_request_t req; usbd_status err; void *endpoints; if (LIST_FIRST(&iface->pipes) != 0) return (USBD_IN_USE); endpoints = iface->endpoints; err = usbd_fill_iface_data(iface->device, iface->index, altidx); if (err) return (err); /* new setting works, we can free old endpoints */ if (endpoints != NULL) free(endpoints, M_USB); #ifdef DIAGNOSTIC if (iface->idesc == NULL) { printf("usbd_set_interface: NULL pointer\n"); return (USBD_INVAL); } #endif req.bmRequestType = UT_WRITE_INTERFACE; req.bRequest = UR_SET_INTERFACE; USETW(req.wValue, iface->idesc->bAlternateSetting); USETW(req.wIndex, iface->idesc->bInterfaceNumber); USETW(req.wLength, 0); return (usbd_do_request(iface->device, &req, 0)); } int usbd_get_no_alts(usb_config_descriptor_t *cdesc, int ifaceno) { char *p = (char *)cdesc; char *end = p + UGETW(cdesc->wTotalLength); usb_interface_descriptor_t *d; int n; for (n = 0; p < end; p += d->bLength) { d = (usb_interface_descriptor_t *)p; if (p + d->bLength <= end && d->bDescriptorType == UDESC_INTERFACE && d->bInterfaceNumber == ifaceno) n++; } return (n); } int usbd_get_interface_altindex(usbd_interface_handle iface) { return (iface->altindex); } usbd_status usbd_get_interface(usbd_interface_handle iface, u_int8_t *aiface) { usb_device_request_t req; req.bmRequestType = UT_READ_INTERFACE; req.bRequest = UR_GET_INTERFACE; USETW(req.wValue, 0); USETW(req.wIndex, iface->idesc->bInterfaceNumber); USETW(req.wLength, 1); return (usbd_do_request(iface->device, &req, aiface)); } /*** Internal routines ***/ /* Dequeue all pipe operations, called at splusb(). */ Static usbd_status usbd_ar_pipe(usbd_pipe_handle pipe) { usbd_xfer_handle xfer; SPLUSBCHECK; DPRINTFN(2,("usbd_ar_pipe: pipe=%p\n", pipe)); #ifdef USB_DEBUG if (usbdebug > 5) usbd_dump_queue(pipe); #endif pipe->repeat = 0; pipe->aborting = 1; while ((xfer = SIMPLEQ_FIRST(&pipe->queue)) != NULL) { DPRINTFN(2,("usbd_ar_pipe: pipe=%p xfer=%p (methods=%p)\n", pipe, xfer, pipe->methods)); /* Make the HC abort it (and invoke the callback). */ pipe->methods->abort(xfer); /* XXX only for non-0 usbd_clear_endpoint_stall(pipe); */ } pipe->aborting = 0; return (USBD_NORMAL_COMPLETION); } /* Called at splusb() */ void usb_transfer_complete(usbd_xfer_handle xfer) { usbd_pipe_handle pipe = xfer->pipe; usb_dma_t *dmap = &xfer->dmabuf; int repeat = pipe->repeat; int polling; SPLUSBCHECK; DPRINTFN(5, ("usb_transfer_complete: pipe=%p xfer=%p status=%d " "actlen=%d\n", pipe, xfer, xfer->status, xfer->actlen)); #ifdef DIAGNOSTIC if (pipe == NULL) { printf("usbd_transfer_cb: pipe==0, xfer=%p\n", xfer); return; } #endif polling = pipe->device->bus->use_polling; /* XXXX */ if (polling) pipe->running = 0; if (!(xfer->flags & USBD_NO_COPY) && xfer->actlen != 0 && usbd_xfer_isread(xfer)) { #ifdef DIAGNOSTIC if (xfer->actlen > xfer->length) { printf("usb_transfer_complete: actlen > len %d > %d\n", xfer->actlen, xfer->length); xfer->actlen = xfer->length; } #endif memcpy(xfer->buffer, KERNADDR(dmap), xfer->actlen); } /* if we allocated the buffer in usbd_transfer() we free it here. */ if (xfer->rqflags & URQ_AUTO_DMABUF) { if (!repeat) { struct usbd_bus *bus = pipe->device->bus; bus->methods->freem(bus, dmap); xfer->rqflags &= ~URQ_AUTO_DMABUF; } } if (!repeat) { /* Remove request from queue. */ #ifdef DIAGNOSTIC if (xfer != SIMPLEQ_FIRST(&pipe->queue)) printf("usb_transfer_complete: bad dequeue %p != %p\n", xfer, SIMPLEQ_FIRST(&pipe->queue)); #endif SIMPLEQ_REMOVE_HEAD(&pipe->queue, xfer, next); } DPRINTFN(5,("usb_transfer_complete: repeat=%d new head=%p\n", repeat, SIMPLEQ_FIRST(&pipe->queue))); /* Count completed transfers. */ ++pipe->device->bus->stats.requests [pipe->endpoint->edesc->bmAttributes & UE_XFERTYPE]; xfer->done = 1; if (!xfer->status && xfer->actlen < xfer->length && !(xfer->flags & USBD_SHORT_XFER_OK)) { DPRINTFN(-1,("usbd_transfer_cb: short transfer %d<%d\n", xfer->actlen, xfer->length)); xfer->status = USBD_SHORT_XFER; } if (xfer->callback) xfer->callback(xfer, xfer->priv, xfer->status); #ifdef DIAGNOSTIC if (pipe->methods->done != NULL) pipe->methods->done(xfer); else printf("usb_transfer_complete: pipe->methods->done == NULL\n"); #else pipe->methods->done(xfer); #endif if ((xfer->flags & USBD_SYNCHRONOUS) && !polling) wakeup(xfer); if (!repeat) { /* XXX should we stop the queue on all errors? */ if ((xfer->status == USBD_CANCELLED || xfer->status == USBD_TIMEOUT) && pipe->iface != NULL) /* not control pipe */ pipe->running = 0; else usbd_start_next(pipe); } } usbd_status usb_insert_transfer(usbd_xfer_handle xfer) { usbd_pipe_handle pipe = xfer->pipe; usbd_status err; int s; DPRINTFN(5,("usb_insert_transfer: pipe=%p running=%d timeout=%d\n", pipe, pipe->running, xfer->timeout)); s = splusb(); SIMPLEQ_INSERT_TAIL(&pipe->queue, xfer, next); if (pipe->running) err = USBD_IN_PROGRESS; else { pipe->running = 1; err = USBD_NORMAL_COMPLETION; } splx(s); return (err); } /* Called at splusb() */ void usbd_start_next(usbd_pipe_handle pipe) { usbd_xfer_handle xfer; usbd_status err; SPLUSBCHECK; #ifdef DIAGNOSTIC if (pipe == NULL) { printf("usbd_start_next: pipe == NULL\n"); return; } if (pipe->methods == NULL || pipe->methods->start == NULL) { printf("usbd_start_next: pipe=%p no start method\n", pipe); return; } #endif /* Get next request in queue. */ xfer = SIMPLEQ_FIRST(&pipe->queue); DPRINTFN(5, ("usbd_start_next: pipe=%p, xfer=%p\n", pipe, xfer)); if (xfer == NULL) { pipe->running = 0; } else { err = pipe->methods->start(xfer); if (err != USBD_IN_PROGRESS) { printf("usbd_start_next: error=%d\n", err); pipe->running = 0; /* XXX do what? */ } } } usbd_status usbd_do_request(usbd_device_handle dev, usb_device_request_t *req, void *data) { return (usbd_do_request_flags(dev, req, data, 0, 0)); } usbd_status usbd_do_request_flags(usbd_device_handle dev, usb_device_request_t *req, void *data, u_int16_t flags, int *actlen) { return (usbd_do_request_flags_pipe(dev, dev->default_pipe, req, data, flags, actlen)); } usbd_status usbd_do_request_flags_pipe(usbd_device_handle dev, usbd_pipe_handle pipe, usb_device_request_t *req, void *data, u_int16_t flags, int *actlen) { usbd_xfer_handle xfer; usbd_status err; #ifdef DIAGNOSTIC #if defined(__i386__) && defined(__FreeBSD__) KASSERT(intr_nesting_level == 0, ("usbd_do_request: in interrupt context")); #endif if (dev->bus->intr_context) { printf("usbd_do_request: not in process context\n"); return (USBD_INVAL); } #endif xfer = usbd_alloc_xfer(dev); if (xfer == NULL) return (USBD_NOMEM); usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT, req, data, UGETW(req->wLength), flags, 0); xfer->pipe = pipe; err = usbd_sync_transfer(xfer); #if defined(USB_DEBUG) || defined(DIAGNOSTIC) if (xfer->actlen > xfer->length) DPRINTF(("usbd_do_request: overrun addr=%d type=0x%02x req=0x" "%02x val=%d index=%d rlen=%d length=%d actlen=%d\n", dev->address, xfer->request.bmRequestType, xfer->request.bRequest, UGETW(xfer->request.wValue), UGETW(xfer->request.wIndex), UGETW(xfer->request.wLength), xfer->length, xfer->actlen)); #endif if (actlen != NULL) *actlen = xfer->actlen; if (err == USBD_STALLED) { /* * The control endpoint has stalled. Control endpoints * should not halt, but some may do so anyway so clear * any halt condition. */ usb_device_request_t treq; usb_status_t status; u_int16_t s; usbd_status nerr; treq.bmRequestType = UT_READ_ENDPOINT; treq.bRequest = UR_GET_STATUS; USETW(treq.wValue, 0); USETW(treq.wIndex, 0); USETW(treq.wLength, sizeof(usb_status_t)); usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT, &treq, &status,sizeof(usb_status_t), 0, 0); nerr = usbd_sync_transfer(xfer); if (nerr) goto bad; s = UGETW(status.wStatus); DPRINTF(("usbd_do_request: status = 0x%04x\n", s)); if (!(s & UES_HALT)) goto bad; treq.bmRequestType = UT_WRITE_ENDPOINT; treq.bRequest = UR_CLEAR_FEATURE; USETW(treq.wValue, UF_ENDPOINT_HALT); USETW(treq.wIndex, 0); USETW(treq.wLength, 0); usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT, &treq, &status, 0, 0, 0); nerr = usbd_sync_transfer(xfer); if (nerr) goto bad; } bad: usbd_free_xfer(xfer); return (err); } void usbd_do_request_async_cb(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) { #if defined(USB_DEBUG) || defined(DIAGNOSTIC) if (xfer->actlen > xfer->length) DPRINTF(("usbd_do_request: overrun addr=%d type=0x%02x req=0x" "%02x val=%d index=%d rlen=%d length=%d actlen=%d\n", xfer->pipe->device->address, xfer->request.bmRequestType, xfer->request.bRequest, UGETW(xfer->request.wValue), UGETW(xfer->request.wIndex), UGETW(xfer->request.wLength), xfer->length, xfer->actlen)); #endif usbd_free_xfer(xfer); } /* * Execute a request without waiting for completion. * Can be used from interrupt context. */ usbd_status usbd_do_request_async(usbd_device_handle dev, usb_device_request_t *req, void *data) { usbd_xfer_handle xfer; usbd_status err; xfer = usbd_alloc_xfer(dev); if (xfer == NULL) return (USBD_NOMEM); usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT, req, data, UGETW(req->wLength), 0, usbd_do_request_async_cb); err = usbd_transfer(xfer); if (err != USBD_IN_PROGRESS) { usbd_free_xfer(xfer); return (err); } return (USBD_NORMAL_COMPLETION); } struct usbd_quirks * usbd_get_quirks(usbd_device_handle dev) { return (dev->quirks); } /* XXX do periodic free() of free list */ /* * Called from keyboard driver when in polling mode. */ void usbd_dopoll(usbd_interface_handle iface) { iface->device->bus->methods->do_poll(iface->device->bus); } void usbd_set_polling(usbd_device_handle dev, int on) { if (on) dev->bus->use_polling++; else dev->bus->use_polling--; } usb_endpoint_descriptor_t * usbd_get_endpoint_descriptor(usbd_interface_handle iface, u_int8_t address) { struct usbd_endpoint *ep; int i; for (i = 0; i < iface->idesc->bNumEndpoints; i++) { ep = &iface->endpoints[i]; if (ep->edesc->bEndpointAddress == address) return (iface->endpoints[i].edesc); } return (0); } /* * usbd_ratecheck() can limit the number of error messages that occurs. * When a device is unplugged it may take up to 0.25s for the hub driver * to notice it. If the driver continuosly tries to do I/O operations * this can generate a large number of messages. */ int usbd_ratecheck(struct timeval *last) { static struct timeval errinterval = { 0, 250000 }; /* 0.25 s*/ return (ratecheck(last, &errinterval)); } #if defined(__FreeBSD__) int usbd_driver_load(module_t mod, int what, void *arg) { /* XXX should implement something like a function that removes all generic devices */ return (0); } #endif