diff options
Diffstat (limited to 'sys/dev/usb/usbdi.c')
| -rw-r--r-- | sys/dev/usb/usbdi.c | 1107 |
1 files changed, 1107 insertions, 0 deletions
diff --git a/sys/dev/usb/usbdi.c b/sys/dev/usb/usbdi.c new file mode 100644 index 0000000..e572b3e --- /dev/null +++ b/sys/dev/usb/usbdi.c @@ -0,0 +1,1107 @@ +/* $NetBSD: usbdi.c,v 1.60 2000/01/19 00:23:58 augustss Exp $ */ +/* $FreeBSD$ */ + +/* + * 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/device.h> +#elif defined(__FreeBSD__) +#include <sys/module.h> +#include <sys/bus.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" +#include <machine/clock.h> +#define delay(d) DELAY(d) +#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 __P((usbd_pipe_handle pipe)); +Static void usbd_do_request_async_cb + __P((usbd_xfer_handle, usbd_private_handle, usbd_status)); +Static void usbd_start_next __P((usbd_pipe_handle pipe)); +Static usbd_status usbd_open_pipe_ival + __P((usbd_interface_handle, u_int8_t, u_int8_t, usbd_pipe_handle *, int)); + +Static int usbd_nbuses = 0; + +void +usbd_init() +{ + usbd_nbuses++; +} + +void +usbd_finish() +{ + --usbd_nbuses; +} + +Static __inline int usbd_xfer_isread __P((usbd_xfer_handle xfer)); +Static __inline int +usbd_xfer_isread(xfer) + 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 __P((usbd_pipe_handle)); + +void +usbd_dump_queue(pipe) + 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(iface, address, flags, 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(iface, address, flags, 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(iface, address, flags, pipe, priv, buffer, len, cb, ival) + 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(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 (pipe->intrxfer != NULL) + usbd_free_xfer(pipe->intrxfer); + free(pipe, M_USB); + return (USBD_NORMAL_COMPLETION); +} + +usbd_status +usbd_transfer(xfer) + 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; + + 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, 0), 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; + } + if (!xfer->done) + pipe->methods->abort(xfer); + } 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(xfer) + usbd_xfer_handle xfer; +{ + xfer->flags |= USBD_SYNCHRONOUS; + return (usbd_transfer(xfer)); +} + +void * +usbd_alloc_buffer(xfer, size) + 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, 0)); +} + +void +usbd_free_buffer(xfer) + 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(xfer) + usbd_xfer_handle xfer; +{ + if (!(xfer->rqflags & URQ_DEV_DMABUF)) + return (0); + return (KERNADDR(&xfer->dmabuf, 0)); +} + +usbd_xfer_handle +usbd_alloc_xfer(dev) + usbd_device_handle dev; +{ + usbd_xfer_handle xfer; + + xfer = dev->bus->methods->allocx(dev->bus); + if (xfer == NULL) + return (NULL); + xfer->device = dev; + DPRINTFN(5,("usbd_alloc_xfer() = %p\n", xfer)); + return (xfer); +} + +usbd_status +usbd_free_xfer(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); + xfer->device->bus->methods->freex(xfer->device->bus, xfer); + return (USBD_NORMAL_COMPLETION); +} + +void +usbd_setup_xfer(xfer, pipe, priv, buffer, length, flags, timeout, callback) + 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; + void (*callback) __P((usbd_xfer_handle, + usbd_private_handle, + usbd_status)); +{ + 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(xfer, dev, priv, timeout, req, buffer, + length, flags, callback) + 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; + void (*callback) __P((usbd_xfer_handle, + usbd_private_handle, + usbd_status)); +{ + 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(xfer, pipe, priv, frlengths, nframes, flags, callback) + 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(xfer, priv, buffer, count, 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(dev) + 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(iface) + 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(dev) + usbd_device_handle dev; +{ + return (&dev->ddesc); +} + +usb_endpoint_descriptor_t * +usbd_interface2endpoint_descriptor(iface, index) + 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(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(pipe) + 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(pipe) + 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(pipe) + usbd_pipe_handle pipe; +{ + pipe->methods->cleartoggle(pipe); +} + + +usbd_status +usbd_endpoint_count(iface, count) + usbd_interface_handle iface; + u_int8_t *count; +{ + *count = iface->idesc->bNumEndpoints; + return (USBD_NORMAL_COMPLETION); +} + +usbd_status +usbd_interface_count(dev, 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(iface, dev) + usbd_interface_handle iface; + usbd_device_handle *dev; +{ + *dev = iface->device; + return (USBD_NORMAL_COMPLETION); +} + +usbd_status +usbd_device2interface_handle(dev, ifaceno, iface) + 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(pipe) + usbd_pipe_handle pipe; +{ + return (pipe->device); +} + +/* XXXX use altno */ +usbd_status +usbd_set_interface(iface, altidx) + usbd_interface_handle iface; + int altidx; +{ + usb_device_request_t req; + usbd_status err; + + if (LIST_FIRST(&iface->pipes) != 0) + return (USBD_IN_USE); + + if (iface->endpoints) + free(iface->endpoints, M_USB); + iface->endpoints = 0; + iface->idesc = 0; + + err = usbd_fill_iface_data(iface->device, iface->index, altidx); + if (err) + return (err); + + 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(cdesc, ifaceno) + 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(iface) + usbd_interface_handle iface; +{ + return (iface->altindex); +} + +usbd_status +usbd_get_interface(iface, aiface) + 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(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; + 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); */ + } + return (USBD_NORMAL_COMPLETION); +} + +/* Called at splusb() */ +void +usb_transfer_complete(xfer) + 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, 0), 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 (pipe->methods->done != NULL) + pipe->methods->done(xfer); + + 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); + } + + /* 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); + + 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(xfer) + 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(pipe) + 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(dev, req, data) + 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(dev, req, data, flags, actlen) + usbd_device_handle dev; + 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); + 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(xfer, priv, status) + 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(dev, req, data) + 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(dev) + 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(iface) + usbd_interface_handle iface; +{ + iface->device->bus->methods->do_poll(iface->device->bus); +} + +void +usbd_set_polling(iface, on) + usbd_interface_handle iface; + int on; +{ + if (on) + iface->device->bus->use_polling++; + else + iface->device->bus->use_polling--; +} + + +usb_endpoint_descriptor_t * +usbd_get_endpoint_descriptor(iface, address) + 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); +} + +#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 |
