Index: head/lib/libusb/libusb10.c =================================================================== --- head/lib/libusb/libusb10.c (revision 284743) +++ head/lib/libusb/libusb10.c (revision 284744) @@ -1,1579 +1,1572 @@ /* $FreeBSD$ */ /*- * Copyright (c) 2009 Sylvestre Gallon. All rights reserved. * Copyright (c) 2009 Hans Petter Selasky. All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ #ifdef LIBUSB_GLOBAL_INCLUDE_FILE #include LIBUSB_GLOBAL_INCLUDE_FILE #else #include #include #include #include #include #include #include #include #include #include #include #include #include #endif #define libusb_device_handle libusb20_device #include "libusb20.h" #include "libusb20_desc.h" #include "libusb20_int.h" #include "libusb.h" #include "libusb10.h" static pthread_mutex_t default_context_lock = PTHREAD_MUTEX_INITIALIZER; struct libusb_context *usbi_default_context = NULL; /* Prototypes */ static struct libusb20_transfer *libusb10_get_transfer(struct libusb20_device *, uint8_t, uint8_t); static int libusb10_get_buffsize(struct libusb20_device *, libusb_transfer *); static int libusb10_convert_error(uint8_t status); static void libusb10_complete_transfer(struct libusb20_transfer *, struct libusb_super_transfer *, int); static void libusb10_isoc_proxy(struct libusb20_transfer *); static void libusb10_bulk_intr_proxy(struct libusb20_transfer *); static void libusb10_ctrl_proxy(struct libusb20_transfer *); static void libusb10_submit_transfer_sub(struct libusb20_device *, uint8_t); /* Library initialisation / deinitialisation */ void libusb_set_debug(libusb_context *ctx, int level) { ctx = GET_CONTEXT(ctx); if (ctx) ctx->debug = level; } static void libusb_set_nonblocking(int f) { int flags; /* * We ignore any failures in this function, hence the * non-blocking flag is not critical to the operation of * libUSB. We use F_GETFL and F_SETFL to be compatible with * Linux. */ flags = fcntl(f, F_GETFL, NULL); if (flags == -1) return; flags |= O_NONBLOCK; fcntl(f, F_SETFL, flags); } int libusb_init(libusb_context **context) { struct libusb_context *ctx; pthread_condattr_t attr; char *debug; int ret; ctx = malloc(sizeof(*ctx)); if (!ctx) return (LIBUSB_ERROR_INVALID_PARAM); memset(ctx, 0, sizeof(*ctx)); debug = getenv("LIBUSB_DEBUG"); if (debug != NULL) { ctx->debug = atoi(debug); if (ctx->debug != 0) ctx->debug_fixed = 1; } TAILQ_INIT(&ctx->pollfds); TAILQ_INIT(&ctx->tr_done); if (pthread_mutex_init(&ctx->ctx_lock, NULL) != 0) { free(ctx); return (LIBUSB_ERROR_NO_MEM); } if (pthread_condattr_init(&attr) != 0) { pthread_mutex_destroy(&ctx->ctx_lock); free(ctx); return (LIBUSB_ERROR_NO_MEM); } if (pthread_condattr_setclock(&attr, CLOCK_MONOTONIC) != 0) { pthread_mutex_destroy(&ctx->ctx_lock); pthread_condattr_destroy(&attr); free(ctx); return (LIBUSB_ERROR_OTHER); } if (pthread_cond_init(&ctx->ctx_cond, &attr) != 0) { pthread_mutex_destroy(&ctx->ctx_lock); pthread_condattr_destroy(&attr); free(ctx); return (LIBUSB_ERROR_NO_MEM); } pthread_condattr_destroy(&attr); ctx->ctx_handler = NO_THREAD; ret = pipe(ctx->ctrl_pipe); if (ret < 0) { pthread_mutex_destroy(&ctx->ctx_lock); pthread_cond_destroy(&ctx->ctx_cond); free(ctx); return (LIBUSB_ERROR_OTHER); } /* set non-blocking mode on the control pipe to avoid deadlock */ libusb_set_nonblocking(ctx->ctrl_pipe[0]); libusb_set_nonblocking(ctx->ctrl_pipe[1]); libusb10_add_pollfd(ctx, &ctx->ctx_poll, NULL, ctx->ctrl_pipe[0], POLLIN); pthread_mutex_lock(&default_context_lock); if (usbi_default_context == NULL) { usbi_default_context = ctx; } pthread_mutex_unlock(&default_context_lock); if (context) *context = ctx; DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_init complete"); return (0); } void libusb_exit(libusb_context *ctx) { ctx = GET_CONTEXT(ctx); if (ctx == NULL) return; /* XXX cleanup devices */ libusb10_remove_pollfd(ctx, &ctx->ctx_poll); close(ctx->ctrl_pipe[0]); close(ctx->ctrl_pipe[1]); pthread_mutex_destroy(&ctx->ctx_lock); pthread_cond_destroy(&ctx->ctx_cond); pthread_mutex_lock(&default_context_lock); if (ctx == usbi_default_context) { usbi_default_context = NULL; } pthread_mutex_unlock(&default_context_lock); free(ctx); } /* Device handling and initialisation. */ ssize_t libusb_get_device_list(libusb_context *ctx, libusb_device ***list) { struct libusb20_backend *usb_backend; struct libusb20_device *pdev; struct libusb_device *dev; int i; ctx = GET_CONTEXT(ctx); if (ctx == NULL) return (LIBUSB_ERROR_INVALID_PARAM); if (list == NULL) return (LIBUSB_ERROR_INVALID_PARAM); usb_backend = libusb20_be_alloc_default(); if (usb_backend == NULL) return (LIBUSB_ERROR_NO_MEM); /* figure out how many USB devices are present */ pdev = NULL; i = 0; while ((pdev = libusb20_be_device_foreach(usb_backend, pdev))) i++; /* allocate device pointer list */ *list = malloc((i + 1) * sizeof(void *)); if (*list == NULL) { libusb20_be_free(usb_backend); return (LIBUSB_ERROR_NO_MEM); } /* create libusb v1.0 compliant devices */ i = 0; while ((pdev = libusb20_be_device_foreach(usb_backend, NULL))) { dev = malloc(sizeof(*dev)); if (dev == NULL) { while (i != 0) { libusb_unref_device((*list)[i - 1]); i--; } free(*list); *list = NULL; libusb20_be_free(usb_backend); return (LIBUSB_ERROR_NO_MEM); } /* get device into libUSB v1.0 list */ libusb20_be_dequeue_device(usb_backend, pdev); memset(dev, 0, sizeof(*dev)); /* init transfer queues */ TAILQ_INIT(&dev->tr_head); /* set context we belong to */ dev->ctx = ctx; /* link together the two structures */ dev->os_priv = pdev; pdev->privLuData = dev; (*list)[i] = libusb_ref_device(dev); i++; } (*list)[i] = NULL; libusb20_be_free(usb_backend); return (i); } void libusb_free_device_list(libusb_device **list, int unref_devices) { int i; if (list == NULL) return; /* be NULL safe */ if (unref_devices) { for (i = 0; list[i] != NULL; i++) libusb_unref_device(list[i]); } free(list); } uint8_t libusb_get_bus_number(libusb_device *dev) { if (dev == NULL) return (0); /* should not happen */ return (libusb20_dev_get_bus_number(dev->os_priv)); } int libusb_get_port_numbers(libusb_device *dev, uint8_t *buf, uint8_t bufsize) { return (libusb20_dev_get_port_path(dev->os_priv, buf, bufsize)); } int libusb_get_port_path(libusb_context *ctx, libusb_device *dev, uint8_t *buf, uint8_t bufsize) { return (libusb20_dev_get_port_path(dev->os_priv, buf, bufsize)); } uint8_t libusb_get_device_address(libusb_device *dev) { if (dev == NULL) return (0); /* should not happen */ return (libusb20_dev_get_address(dev->os_priv)); } enum libusb_speed libusb_get_device_speed(libusb_device *dev) { if (dev == NULL) return (LIBUSB_SPEED_UNKNOWN); /* should not happen */ switch (libusb20_dev_get_speed(dev->os_priv)) { case LIBUSB20_SPEED_LOW: return (LIBUSB_SPEED_LOW); case LIBUSB20_SPEED_FULL: return (LIBUSB_SPEED_FULL); case LIBUSB20_SPEED_HIGH: return (LIBUSB_SPEED_HIGH); case LIBUSB20_SPEED_SUPER: return (LIBUSB_SPEED_SUPER); default: break; } return (LIBUSB_SPEED_UNKNOWN); } int libusb_get_max_packet_size(libusb_device *dev, uint8_t endpoint) { struct libusb_config_descriptor *pdconf; struct libusb_interface *pinf; struct libusb_interface_descriptor *pdinf; struct libusb_endpoint_descriptor *pdend; int i; int j; int k; int ret; if (dev == NULL) return (LIBUSB_ERROR_NO_DEVICE); ret = libusb_get_active_config_descriptor(dev, &pdconf); if (ret < 0) return (ret); ret = LIBUSB_ERROR_NOT_FOUND; for (i = 0; i < pdconf->bNumInterfaces; i++) { pinf = &pdconf->interface[i]; for (j = 0; j < pinf->num_altsetting; j++) { pdinf = &pinf->altsetting[j]; for (k = 0; k < pdinf->bNumEndpoints; k++) { pdend = &pdinf->endpoint[k]; if (pdend->bEndpointAddress == endpoint) { ret = pdend->wMaxPacketSize; goto out; } } } } out: libusb_free_config_descriptor(pdconf); return (ret); } int libusb_get_max_iso_packet_size(libusb_device *dev, uint8_t endpoint) { int multiplier; int ret; ret = libusb_get_max_packet_size(dev, endpoint); switch (libusb20_dev_get_speed(dev->os_priv)) { case LIBUSB20_SPEED_LOW: case LIBUSB20_SPEED_FULL: break; default: if (ret > -1) { multiplier = (1 + ((ret >> 11) & 3)); if (multiplier > 3) multiplier = 3; ret = (ret & 0x7FF) * multiplier; } break; } return (ret); } libusb_device * libusb_ref_device(libusb_device *dev) { if (dev == NULL) return (NULL); /* be NULL safe */ CTX_LOCK(dev->ctx); dev->refcnt++; CTX_UNLOCK(dev->ctx); return (dev); } void libusb_unref_device(libusb_device *dev) { if (dev == NULL) return; /* be NULL safe */ CTX_LOCK(dev->ctx); dev->refcnt--; CTX_UNLOCK(dev->ctx); if (dev->refcnt == 0) { libusb20_dev_free(dev->os_priv); free(dev); } } int libusb_open(libusb_device *dev, libusb_device_handle **devh) { libusb_context *ctx = dev->ctx; struct libusb20_device *pdev = dev->os_priv; uint8_t dummy; int err; if (devh == NULL) return (LIBUSB_ERROR_INVALID_PARAM); /* set default device handle value */ *devh = NULL; dev = libusb_ref_device(dev); if (dev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); err = libusb20_dev_open(pdev, 16 * 4 /* number of endpoints */ ); if (err) { libusb_unref_device(dev); return (LIBUSB_ERROR_NO_MEM); } libusb10_add_pollfd(ctx, &dev->dev_poll, pdev, libusb20_dev_get_fd(pdev), POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM); /* make sure our event loop detects the new device */ dummy = 0; err = write(ctx->ctrl_pipe[1], &dummy, sizeof(dummy)); if (err < (int)sizeof(dummy)) { /* ignore error, if any */ DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open write failed!"); } *devh = pdev; return (0); } libusb_device_handle * libusb_open_device_with_vid_pid(libusb_context *ctx, uint16_t vendor_id, uint16_t product_id) { struct libusb_device **devs; struct libusb20_device *pdev; struct LIBUSB20_DEVICE_DESC_DECODED *pdesc; int i; int j; ctx = GET_CONTEXT(ctx); if (ctx == NULL) return (NULL); /* be NULL safe */ DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open_device_width_vid_pid enter"); if ((i = libusb_get_device_list(ctx, &devs)) < 0) return (NULL); pdev = NULL; for (j = 0; j < i; j++) { struct libusb20_device *tdev; tdev = devs[j]->os_priv; pdesc = libusb20_dev_get_device_desc(tdev); /* * NOTE: The USB library will automatically swap the * fields in the device descriptor to be of host * endian type! */ if (pdesc->idVendor == vendor_id && pdesc->idProduct == product_id) { libusb_open(devs[j], &pdev); break; } } libusb_free_device_list(devs, 1); DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open_device_width_vid_pid leave"); return (pdev); } void libusb_close(struct libusb20_device *pdev) { libusb_context *ctx; struct libusb_device *dev; uint8_t dummy; int err; if (pdev == NULL) return; /* be NULL safe */ dev = libusb_get_device(pdev); ctx = dev->ctx; libusb10_remove_pollfd(ctx, &dev->dev_poll); libusb20_dev_close(pdev); /* unref will free the "pdev" when the refcount reaches zero */ libusb_unref_device(dev); /* make sure our event loop detects the closed device */ dummy = 0; err = write(ctx->ctrl_pipe[1], &dummy, sizeof(dummy)); if (err < (int)sizeof(dummy)) { /* ignore error, if any */ DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_close write failed!"); } } libusb_device * libusb_get_device(struct libusb20_device *pdev) { if (pdev == NULL) return (NULL); return ((libusb_device *)pdev->privLuData); } int libusb_get_configuration(struct libusb20_device *pdev, int *config) { struct libusb20_config *pconf; if (pdev == NULL || config == NULL) return (LIBUSB_ERROR_INVALID_PARAM); pconf = libusb20_dev_alloc_config(pdev, libusb20_dev_get_config_index(pdev)); if (pconf == NULL) return (LIBUSB_ERROR_NO_MEM); *config = pconf->desc.bConfigurationValue; free(pconf); return (0); } int libusb_set_configuration(struct libusb20_device *pdev, int configuration) { struct libusb20_config *pconf; struct libusb_device *dev; int err; uint8_t i; dev = libusb_get_device(pdev); if (dev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); if (configuration < 1) { /* unconfigure */ i = 255; } else { for (i = 0; i != 255; i++) { uint8_t found; pconf = libusb20_dev_alloc_config(pdev, i); if (pconf == NULL) return (LIBUSB_ERROR_INVALID_PARAM); found = (pconf->desc.bConfigurationValue == configuration); free(pconf); if (found) goto set_config; } return (LIBUSB_ERROR_INVALID_PARAM); } set_config: libusb10_cancel_all_transfer(dev); libusb10_remove_pollfd(dev->ctx, &dev->dev_poll); err = libusb20_dev_set_config_index(pdev, i); libusb10_add_pollfd(dev->ctx, &dev->dev_poll, pdev, libusb20_dev_get_fd(pdev), POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM); return (err ? LIBUSB_ERROR_INVALID_PARAM : 0); } int libusb_claim_interface(struct libusb20_device *pdev, int interface_number) { libusb_device *dev; dev = libusb_get_device(pdev); if (dev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); if (interface_number < 0 || interface_number > 31) return (LIBUSB_ERROR_INVALID_PARAM); CTX_LOCK(dev->ctx); dev->claimed_interfaces |= (1 << interface_number); CTX_UNLOCK(dev->ctx); return (0); } int libusb_release_interface(struct libusb20_device *pdev, int interface_number) { libusb_device *dev; int err = 0; dev = libusb_get_device(pdev); if (dev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); if (interface_number < 0 || interface_number > 31) return (LIBUSB_ERROR_INVALID_PARAM); CTX_LOCK(dev->ctx); if (!(dev->claimed_interfaces & (1 << interface_number))) err = LIBUSB_ERROR_NOT_FOUND; if (!err) dev->claimed_interfaces &= ~(1 << interface_number); CTX_UNLOCK(dev->ctx); return (err); } int libusb_set_interface_alt_setting(struct libusb20_device *pdev, int interface_number, int alternate_setting) { libusb_device *dev; int err = 0; dev = libusb_get_device(pdev); if (dev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); if (interface_number < 0 || interface_number > 31) return (LIBUSB_ERROR_INVALID_PARAM); CTX_LOCK(dev->ctx); if (!(dev->claimed_interfaces & (1 << interface_number))) err = LIBUSB_ERROR_NOT_FOUND; CTX_UNLOCK(dev->ctx); if (err) return (err); libusb10_cancel_all_transfer(dev); libusb10_remove_pollfd(dev->ctx, &dev->dev_poll); err = libusb20_dev_set_alt_index(pdev, interface_number, alternate_setting); libusb10_add_pollfd(dev->ctx, &dev->dev_poll, pdev, libusb20_dev_get_fd(pdev), POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM); return (err ? LIBUSB_ERROR_OTHER : 0); } static struct libusb20_transfer * libusb10_get_transfer(struct libusb20_device *pdev, uint8_t endpoint, uint8_t xfer_index) { xfer_index &= 1; /* double buffering */ xfer_index |= (endpoint & LIBUSB20_ENDPOINT_ADDRESS_MASK) * 4; if (endpoint & LIBUSB20_ENDPOINT_DIR_MASK) { /* this is an IN endpoint */ xfer_index |= 2; } return (libusb20_tr_get_pointer(pdev, xfer_index)); } int libusb_clear_halt(struct libusb20_device *pdev, uint8_t endpoint) { struct libusb20_transfer *xfer; struct libusb_device *dev; int err; xfer = libusb10_get_transfer(pdev, endpoint, 0); if (xfer == NULL) return (LIBUSB_ERROR_INVALID_PARAM); dev = libusb_get_device(pdev); if (dev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); CTX_LOCK(dev->ctx); err = libusb20_tr_open(xfer, 0, 1, endpoint); CTX_UNLOCK(dev->ctx); if (err != 0 && err != LIBUSB20_ERROR_BUSY) return (LIBUSB_ERROR_OTHER); libusb20_tr_clear_stall_sync(xfer); /* check if we opened the transfer */ if (err == 0) { CTX_LOCK(dev->ctx); libusb20_tr_close(xfer); CTX_UNLOCK(dev->ctx); } return (0); /* success */ } int libusb_reset_device(struct libusb20_device *pdev) { libusb_device *dev; int err; dev = libusb_get_device(pdev); if (dev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); libusb10_cancel_all_transfer(dev); libusb10_remove_pollfd(dev->ctx, &dev->dev_poll); err = libusb20_dev_reset(pdev); libusb10_add_pollfd(dev->ctx, &dev->dev_poll, pdev, libusb20_dev_get_fd(pdev), POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM); return (err ? LIBUSB_ERROR_OTHER : 0); } int libusb_check_connected(struct libusb20_device *pdev) { libusb_device *dev; int err; dev = libusb_get_device(pdev); if (dev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); err = libusb20_dev_check_connected(pdev); return (err ? LIBUSB_ERROR_NO_DEVICE : 0); } int libusb_kernel_driver_active(struct libusb20_device *pdev, int interface) { if (pdev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); if (libusb20_dev_kernel_driver_active(pdev, interface)) return (0); /* no kernel driver is active */ else return (1); /* kernel driver is active */ } int libusb_get_driver_np(struct libusb20_device *pdev, int interface, char *name, int namelen) { return (libusb_get_driver(pdev, interface, name, namelen)); } int libusb_get_driver(struct libusb20_device *pdev, int interface, char *name, int namelen) { char *ptr; int err; if (pdev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); if (namelen < 1) return (LIBUSB_ERROR_INVALID_PARAM); if (namelen > 255) namelen = 255; err = libusb20_dev_get_iface_desc( pdev, interface, name, namelen); if (err != 0) return (LIBUSB_ERROR_OTHER); /* we only want the driver name */ ptr = strstr(name, ":"); if (ptr != NULL) *ptr = 0; return (0); } int libusb_detach_kernel_driver_np(struct libusb20_device *pdev, int interface) { return (libusb_detach_kernel_driver(pdev, interface)); } int libusb_detach_kernel_driver(struct libusb20_device *pdev, int interface) { int err; if (pdev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); err = libusb20_dev_detach_kernel_driver( pdev, interface); return (err ? LIBUSB_ERROR_OTHER : 0); } int libusb_attach_kernel_driver(struct libusb20_device *pdev, int interface) { if (pdev == NULL) return (LIBUSB_ERROR_INVALID_PARAM); /* stub - currently not supported by libusb20 */ return (0); } /* Asynchronous device I/O */ struct libusb_transfer * libusb_alloc_transfer(int iso_packets) { struct libusb_transfer *uxfer; struct libusb_super_transfer *sxfer; int len; len = sizeof(struct libusb_transfer) + sizeof(struct libusb_super_transfer) + (iso_packets * sizeof(libusb_iso_packet_descriptor)); sxfer = malloc(len); if (sxfer == NULL) return (NULL); memset(sxfer, 0, len); uxfer = (struct libusb_transfer *)( ((uint8_t *)sxfer) + sizeof(*sxfer)); /* set default value */ uxfer->num_iso_packets = iso_packets; return (uxfer); } void libusb_free_transfer(struct libusb_transfer *uxfer) { struct libusb_super_transfer *sxfer; if (uxfer == NULL) return; /* be NULL safe */ /* check if we should free the transfer buffer */ if (uxfer->flags & LIBUSB_TRANSFER_FREE_BUFFER) free(uxfer->buffer); sxfer = (struct libusb_super_transfer *)( (uint8_t *)uxfer - sizeof(*sxfer)); free(sxfer); } static uint32_t libusb10_get_maxframe(struct libusb20_device *pdev, libusb_transfer *xfer) { uint32_t ret; switch (xfer->type) { case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: ret = 60 | LIBUSB20_MAX_FRAME_PRE_SCALE; /* 60ms */ break; case LIBUSB_TRANSFER_TYPE_CONTROL: ret = 2; break; default: ret = 1; break; } return (ret); } static int libusb10_get_buffsize(struct libusb20_device *pdev, libusb_transfer *xfer) { int ret; int usb_speed; usb_speed = libusb20_dev_get_speed(pdev); switch (xfer->type) { case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: ret = 0; /* kernel will auto-select */ break; case LIBUSB_TRANSFER_TYPE_CONTROL: ret = 1024; break; default: switch (usb_speed) { case LIBUSB20_SPEED_LOW: ret = 256; break; case LIBUSB20_SPEED_FULL: ret = 4096; break; case LIBUSB20_SPEED_SUPER: ret = 65536; break; default: ret = 16384; break; } break; } return (ret); } static int libusb10_convert_error(uint8_t status) { ; /* indent fix */ switch (status) { case LIBUSB20_TRANSFER_START: case LIBUSB20_TRANSFER_COMPLETED: return (LIBUSB_TRANSFER_COMPLETED); case LIBUSB20_TRANSFER_OVERFLOW: return (LIBUSB_TRANSFER_OVERFLOW); case LIBUSB20_TRANSFER_NO_DEVICE: return (LIBUSB_TRANSFER_NO_DEVICE); case LIBUSB20_TRANSFER_STALL: return (LIBUSB_TRANSFER_STALL); case LIBUSB20_TRANSFER_CANCELLED: return (LIBUSB_TRANSFER_CANCELLED); case LIBUSB20_TRANSFER_TIMED_OUT: return (LIBUSB_TRANSFER_TIMED_OUT); default: return (LIBUSB_TRANSFER_ERROR); } } /* This function must be called locked */ static void libusb10_complete_transfer(struct libusb20_transfer *pxfer, struct libusb_super_transfer *sxfer, int status) { struct libusb_transfer *uxfer; struct libusb_device *dev; uxfer = (struct libusb_transfer *)( ((uint8_t *)sxfer) + sizeof(*sxfer)); if (pxfer != NULL) libusb20_tr_set_priv_sc1(pxfer, NULL); /* set transfer status */ uxfer->status = status; /* update super transfer state */ sxfer->state = LIBUSB_SUPER_XFER_ST_NONE; dev = libusb_get_device(uxfer->dev_handle); TAILQ_INSERT_TAIL(&dev->ctx->tr_done, sxfer, entry); } /* This function must be called locked */ static void libusb10_isoc_proxy(struct libusb20_transfer *pxfer) { struct libusb_super_transfer *sxfer; struct libusb_transfer *uxfer; uint32_t actlen; uint16_t iso_packets; uint16_t i; uint8_t status; - uint8_t flags; status = libusb20_tr_get_status(pxfer); sxfer = libusb20_tr_get_priv_sc1(pxfer); actlen = libusb20_tr_get_actual_length(pxfer); iso_packets = libusb20_tr_get_max_frames(pxfer); if (sxfer == NULL) - return; /* cancelled - nothing to do */ + return; /* cancelled - nothing to do */ uxfer = (struct libusb_transfer *)( ((uint8_t *)sxfer) + sizeof(*sxfer)); if (iso_packets > uxfer->num_iso_packets) iso_packets = uxfer->num_iso_packets; if (iso_packets == 0) - return; /* nothing to do */ + return; /* nothing to do */ /* make sure that the number of ISOCHRONOUS packets is valid */ uxfer->num_iso_packets = iso_packets; - flags = uxfer->flags; - switch (status) { case LIBUSB20_TRANSFER_COMPLETED: - /* update actual length */ uxfer->actual_length = actlen; for (i = 0; i != iso_packets; i++) { uxfer->iso_packet_desc[i].actual_length = libusb20_tr_get_length(pxfer, i); } libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); break; - case LIBUSB20_TRANSFER_START: - /* setup length(s) */ actlen = 0; for (i = 0; i != iso_packets; i++) { libusb20_tr_setup_isoc(pxfer, &uxfer->buffer[actlen], uxfer->iso_packet_desc[i].length, i); actlen += uxfer->iso_packet_desc[i].length; } /* no remainder */ sxfer->rem_len = 0; libusb20_tr_set_total_frames(pxfer, iso_packets); libusb20_tr_submit(pxfer); /* fork another USB transfer, if any */ libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint); break; - default: libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status)); break; } } /* This function must be called locked */ static void libusb10_bulk_intr_proxy(struct libusb20_transfer *pxfer) { struct libusb_super_transfer *sxfer; struct libusb_transfer *uxfer; uint32_t max_bulk; uint32_t actlen; uint8_t status; uint8_t flags; status = libusb20_tr_get_status(pxfer); sxfer = libusb20_tr_get_priv_sc1(pxfer); max_bulk = libusb20_tr_get_max_total_length(pxfer); actlen = libusb20_tr_get_actual_length(pxfer); if (sxfer == NULL) return; /* cancelled - nothing to do */ uxfer = (struct libusb_transfer *)( ((uint8_t *)sxfer) + sizeof(*sxfer)); flags = uxfer->flags; switch (status) { case LIBUSB20_TRANSFER_COMPLETED: uxfer->actual_length += actlen; /* check for short packet */ if (sxfer->last_len != actlen) { if (flags & LIBUSB_TRANSFER_SHORT_NOT_OK) { libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_ERROR); } else { libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); } break; } /* check for end of data */ if (sxfer->rem_len == 0) { libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); break; } /* FALLTHROUGH */ case LIBUSB20_TRANSFER_START: if (max_bulk > sxfer->rem_len) { max_bulk = sxfer->rem_len; } /* setup new BULK or INTERRUPT transaction */ libusb20_tr_setup_bulk(pxfer, sxfer->curr_data, max_bulk, uxfer->timeout); /* update counters */ sxfer->last_len = max_bulk; sxfer->curr_data += max_bulk; sxfer->rem_len -= max_bulk; libusb20_tr_submit(pxfer); /* check if we can fork another USB transfer */ if (sxfer->rem_len == 0) libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint); break; default: libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status)); break; } } /* This function must be called locked */ static void libusb10_ctrl_proxy(struct libusb20_transfer *pxfer) { struct libusb_super_transfer *sxfer; struct libusb_transfer *uxfer; uint32_t max_bulk; uint32_t actlen; uint8_t status; uint8_t flags; status = libusb20_tr_get_status(pxfer); sxfer = libusb20_tr_get_priv_sc1(pxfer); max_bulk = libusb20_tr_get_max_total_length(pxfer); actlen = libusb20_tr_get_actual_length(pxfer); if (sxfer == NULL) return; /* cancelled - nothing to do */ uxfer = (struct libusb_transfer *)( ((uint8_t *)sxfer) + sizeof(*sxfer)); flags = uxfer->flags; switch (status) { case LIBUSB20_TRANSFER_COMPLETED: uxfer->actual_length += actlen; /* subtract length of SETUP packet, if any */ actlen -= libusb20_tr_get_length(pxfer, 0); /* check for short packet */ if (sxfer->last_len != actlen) { if (flags & LIBUSB_TRANSFER_SHORT_NOT_OK) { libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_ERROR); } else { libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); } break; } /* check for end of data */ if (sxfer->rem_len == 0) { libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); break; } /* FALLTHROUGH */ case LIBUSB20_TRANSFER_START: if (max_bulk > sxfer->rem_len) { max_bulk = sxfer->rem_len; } /* setup new CONTROL transaction */ if (status == LIBUSB20_TRANSFER_COMPLETED) { /* next fragment - don't send SETUP packet */ libusb20_tr_set_length(pxfer, 0, 0); } else { /* first fragment - send SETUP packet */ libusb20_tr_set_length(pxfer, 8, 0); libusb20_tr_set_buffer(pxfer, uxfer->buffer, 0); } if (max_bulk != 0) { libusb20_tr_set_length(pxfer, max_bulk, 1); libusb20_tr_set_buffer(pxfer, sxfer->curr_data, 1); libusb20_tr_set_total_frames(pxfer, 2); } else { libusb20_tr_set_total_frames(pxfer, 1); } /* update counters */ sxfer->last_len = max_bulk; sxfer->curr_data += max_bulk; sxfer->rem_len -= max_bulk; libusb20_tr_submit(pxfer); /* check if we can fork another USB transfer */ if (sxfer->rem_len == 0) libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint); break; default: libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status)); break; } } /* The following function must be called locked */ static void libusb10_submit_transfer_sub(struct libusb20_device *pdev, uint8_t endpoint) { struct libusb20_transfer *pxfer0; struct libusb20_transfer *pxfer1; struct libusb_super_transfer *sxfer; struct libusb_transfer *uxfer; struct libusb_device *dev; int err; int buffsize; int maxframe; int temp; uint8_t dummy; dev = libusb_get_device(pdev); pxfer0 = libusb10_get_transfer(pdev, endpoint, 0); pxfer1 = libusb10_get_transfer(pdev, endpoint, 1); if (pxfer0 == NULL || pxfer1 == NULL) return; /* shouldn't happen */ temp = 0; if (libusb20_tr_pending(pxfer0)) temp |= 1; if (libusb20_tr_pending(pxfer1)) temp |= 2; switch (temp) { case 3: /* wait till one of the transfers complete */ return; case 2: sxfer = libusb20_tr_get_priv_sc1(pxfer1); if (sxfer == NULL) return; /* cancelling */ if (sxfer->rem_len) return; /* cannot queue another one */ /* swap transfers */ pxfer1 = pxfer0; break; case 1: sxfer = libusb20_tr_get_priv_sc1(pxfer0); if (sxfer == NULL) return; /* cancelling */ if (sxfer->rem_len) return; /* cannot queue another one */ /* swap transfers */ pxfer0 = pxfer1; break; default: break; } /* find next transfer on same endpoint */ TAILQ_FOREACH(sxfer, &dev->tr_head, entry) { uxfer = (struct libusb_transfer *)( ((uint8_t *)sxfer) + sizeof(*sxfer)); if (uxfer->endpoint == endpoint) { TAILQ_REMOVE(&dev->tr_head, sxfer, entry); sxfer->entry.tqe_prev = NULL; goto found; } } return; /* success */ found: libusb20_tr_set_priv_sc0(pxfer0, pdev); libusb20_tr_set_priv_sc1(pxfer0, sxfer); /* reset super transfer state */ sxfer->rem_len = uxfer->length; sxfer->curr_data = uxfer->buffer; uxfer->actual_length = 0; switch (uxfer->type) { case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: libusb20_tr_set_callback(pxfer0, libusb10_isoc_proxy); break; case LIBUSB_TRANSFER_TYPE_BULK: case LIBUSB_TRANSFER_TYPE_INTERRUPT: libusb20_tr_set_callback(pxfer0, libusb10_bulk_intr_proxy); break; case LIBUSB_TRANSFER_TYPE_CONTROL: libusb20_tr_set_callback(pxfer0, libusb10_ctrl_proxy); if (sxfer->rem_len < 8) goto failure; /* remove SETUP packet from data */ sxfer->rem_len -= 8; sxfer->curr_data += 8; break; default: goto failure; } buffsize = libusb10_get_buffsize(pdev, uxfer); maxframe = libusb10_get_maxframe(pdev, uxfer); /* make sure the transfer is opened */ err = libusb20_tr_open(pxfer0, buffsize, maxframe, endpoint); if (err && (err != LIBUSB20_ERROR_BUSY)) { goto failure; } libusb20_tr_start(pxfer0); return; failure: libusb10_complete_transfer(pxfer0, sxfer, LIBUSB_TRANSFER_ERROR); /* make sure our event loop spins the done handler */ dummy = 0; err = write(dev->ctx->ctrl_pipe[1], &dummy, sizeof(dummy)); } /* The following function must be called unlocked */ int libusb_submit_transfer(struct libusb_transfer *uxfer) { struct libusb20_transfer *pxfer0; struct libusb20_transfer *pxfer1; struct libusb_super_transfer *sxfer; struct libusb_device *dev; uint8_t endpoint; int err; if (uxfer == NULL) return (LIBUSB_ERROR_INVALID_PARAM); if (uxfer->dev_handle == NULL) return (LIBUSB_ERROR_INVALID_PARAM); endpoint = uxfer->endpoint; dev = libusb_get_device(uxfer->dev_handle); DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_submit_transfer enter"); sxfer = (struct libusb_super_transfer *)( (uint8_t *)uxfer - sizeof(*sxfer)); CTX_LOCK(dev->ctx); pxfer0 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 0); pxfer1 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 1); if (pxfer0 == NULL || pxfer1 == NULL) { err = LIBUSB_ERROR_OTHER; } else if ((sxfer->entry.tqe_prev != NULL) || (libusb20_tr_get_priv_sc1(pxfer0) == sxfer) || (libusb20_tr_get_priv_sc1(pxfer1) == sxfer)) { err = LIBUSB_ERROR_BUSY; } else { /* set pending state */ sxfer->state = LIBUSB_SUPER_XFER_ST_PEND; /* insert transfer into transfer head list */ TAILQ_INSERT_TAIL(&dev->tr_head, sxfer, entry); /* start work transfers */ libusb10_submit_transfer_sub( uxfer->dev_handle, endpoint); err = 0; /* success */ } CTX_UNLOCK(dev->ctx); DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_submit_transfer leave %d", err); return (err); } /* Asynchronous transfer cancel */ int libusb_cancel_transfer(struct libusb_transfer *uxfer) { struct libusb20_transfer *pxfer0; struct libusb20_transfer *pxfer1; struct libusb_super_transfer *sxfer; struct libusb_device *dev; uint8_t endpoint; int retval; if (uxfer == NULL) return (LIBUSB_ERROR_INVALID_PARAM); /* check if not initialised */ if (uxfer->dev_handle == NULL) return (LIBUSB_ERROR_NOT_FOUND); endpoint = uxfer->endpoint; dev = libusb_get_device(uxfer->dev_handle); DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_cancel_transfer enter"); sxfer = (struct libusb_super_transfer *)( (uint8_t *)uxfer - sizeof(*sxfer)); retval = 0; CTX_LOCK(dev->ctx); pxfer0 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 0); pxfer1 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 1); if (sxfer->state != LIBUSB_SUPER_XFER_ST_PEND) { /* only update the transfer status */ uxfer->status = LIBUSB_TRANSFER_CANCELLED; retval = LIBUSB_ERROR_NOT_FOUND; } else if (sxfer->entry.tqe_prev != NULL) { /* we are lucky - transfer is on a queue */ TAILQ_REMOVE(&dev->tr_head, sxfer, entry); sxfer->entry.tqe_prev = NULL; libusb10_complete_transfer(NULL, sxfer, LIBUSB_TRANSFER_CANCELLED); } else if (pxfer0 == NULL || pxfer1 == NULL) { /* not started */ retval = LIBUSB_ERROR_NOT_FOUND; } else if (libusb20_tr_get_priv_sc1(pxfer0) == sxfer) { libusb10_complete_transfer(pxfer0, sxfer, LIBUSB_TRANSFER_CANCELLED); libusb20_tr_stop(pxfer0); /* make sure the queue doesn't stall */ libusb10_submit_transfer_sub( uxfer->dev_handle, endpoint); } else if (libusb20_tr_get_priv_sc1(pxfer1) == sxfer) { libusb10_complete_transfer(pxfer1, sxfer, LIBUSB_TRANSFER_CANCELLED); libusb20_tr_stop(pxfer1); /* make sure the queue doesn't stall */ libusb10_submit_transfer_sub( uxfer->dev_handle, endpoint); } else { /* not started */ retval = LIBUSB_ERROR_NOT_FOUND; } CTX_UNLOCK(dev->ctx); DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_cancel_transfer leave"); return (retval); } UNEXPORTED void libusb10_cancel_all_transfer(libusb_device *dev) { /* TODO */ } uint16_t libusb_cpu_to_le16(uint16_t x) { return (htole16(x)); } uint16_t libusb_le16_to_cpu(uint16_t x) { return (le16toh(x)); } const char * libusb_strerror(int code) { switch (code) { case LIBUSB_SUCCESS: return ("Success"); case LIBUSB_ERROR_IO: return ("I/O error"); case LIBUSB_ERROR_INVALID_PARAM: return ("Invalid parameter"); case LIBUSB_ERROR_ACCESS: return ("Permissions error"); case LIBUSB_ERROR_NO_DEVICE: return ("No device"); case LIBUSB_ERROR_NOT_FOUND: return ("Not found"); case LIBUSB_ERROR_BUSY: return ("Device busy"); case LIBUSB_ERROR_TIMEOUT: return ("Timeout"); case LIBUSB_ERROR_OVERFLOW: return ("Overflow"); case LIBUSB_ERROR_PIPE: return ("Pipe error"); case LIBUSB_ERROR_INTERRUPTED: return ("Interrupted"); case LIBUSB_ERROR_NO_MEM: return ("Out of memory"); case LIBUSB_ERROR_NOT_SUPPORTED: return ("Not supported"); case LIBUSB_ERROR_OTHER: return ("Other error"); default: return ("Unknown error"); } } const char * libusb_error_name(int code) { switch (code) { case LIBUSB_SUCCESS: return ("LIBUSB_SUCCESS"); case LIBUSB_ERROR_IO: return ("LIBUSB_ERROR_IO"); case LIBUSB_ERROR_INVALID_PARAM: return ("LIBUSB_ERROR_INVALID_PARAM"); case LIBUSB_ERROR_ACCESS: return ("LIBUSB_ERROR_ACCESS"); case LIBUSB_ERROR_NO_DEVICE: return ("LIBUSB_ERROR_NO_DEVICE"); case LIBUSB_ERROR_NOT_FOUND: return ("LIBUSB_ERROR_NOT_FOUND"); case LIBUSB_ERROR_BUSY: return ("LIBUSB_ERROR_BUSY"); case LIBUSB_ERROR_TIMEOUT: return ("LIBUSB_ERROR_TIMEOUT"); case LIBUSB_ERROR_OVERFLOW: return ("LIBUSB_ERROR_OVERFLOW"); case LIBUSB_ERROR_PIPE: return ("LIBUSB_ERROR_PIPE"); case LIBUSB_ERROR_INTERRUPTED: return ("LIBUSB_ERROR_INTERRUPTED"); case LIBUSB_ERROR_NO_MEM: return ("LIBUSB_ERROR_NO_MEM"); case LIBUSB_ERROR_NOT_SUPPORTED: return ("LIBUSB_ERROR_NOT_SUPPORTED"); case LIBUSB_ERROR_OTHER: return ("LIBUSB_ERROR_OTHER"); default: return ("LIBUSB_ERROR_UNKNOWN"); } } Index: head/lib/libusb/libusb20_desc.c =================================================================== --- head/lib/libusb/libusb20_desc.c (revision 284743) +++ head/lib/libusb/libusb20_desc.c (revision 284744) @@ -1,796 +1,793 @@ /* $FreeBSD$ */ /*- * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ #ifdef LIBUSB_GLOBAL_INCLUDE_FILE #include LIBUSB_GLOBAL_INCLUDE_FILE #else #include #include #include #include #include #endif #include "libusb20.h" #include "libusb20_desc.h" #include "libusb20_int.h" static const uint32_t libusb20_me_encode_empty[2]; /* dummy */ LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_DEVICE_DESC); LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_ENDPOINT_DESC); LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_INTERFACE_DESC); LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_CONFIG_DESC); LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_CONTROL_SETUP); LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_SS_ENDPT_COMP_DESC); LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_USB_20_DEVCAP_DESC); LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_SS_USB_DEVCAP_DESC); LIBUSB20_MAKE_STRUCT_FORMAT(LIBUSB20_BOS_DESCRIPTOR); /*------------------------------------------------------------------------* * libusb20_parse_config_desc * * Return values: * NULL: Out of memory. * Else: A valid config structure pointer which must be passed to "free()" *------------------------------------------------------------------------*/ struct libusb20_config * libusb20_parse_config_desc(const void *config_desc) { struct libusb20_config *lub_config; struct libusb20_interface *lub_interface; struct libusb20_interface *lub_alt_interface; struct libusb20_interface *last_if; struct libusb20_endpoint *lub_endpoint; struct libusb20_endpoint *last_ep; struct libusb20_me_struct pcdesc; const uint8_t *ptr; uint32_t size; uint16_t niface_no_alt; uint16_t niface; uint16_t nendpoint; uint16_t iface_no; ptr = config_desc; if (ptr[1] != LIBUSB20_DT_CONFIG) { return (NULL); /* not config descriptor */ } /* * The first "bInterfaceNumber" should never have the value 0xff. * Then it is corrupt. */ niface_no_alt = 0; nendpoint = 0; niface = 0; iface_no = 0xFFFF; ptr = NULL; /* get "wTotalLength" and setup "pcdesc" */ pcdesc.ptr = LIBUSB20_ADD_BYTES(config_desc, 0); pcdesc.len = ((const uint8_t *)config_desc)[2] | (((const uint8_t *)config_desc)[3] << 8); pcdesc.type = LIBUSB20_ME_IS_RAW; /* descriptor pre-scan */ while ((ptr = libusb20_desc_foreach(&pcdesc, ptr))) { if (ptr[1] == LIBUSB20_DT_ENDPOINT) { nendpoint++; } else if ((ptr[1] == LIBUSB20_DT_INTERFACE) && (ptr[0] >= 4)) { niface++; /* check "bInterfaceNumber" */ if (ptr[2] != iface_no) { iface_no = ptr[2]; niface_no_alt++; } } } /* sanity checking */ if (niface >= 256) { return (NULL); /* corrupt */ } if (nendpoint >= 256) { return (NULL); /* corrupt */ } size = sizeof(*lub_config) + (niface * sizeof(*lub_interface)) + (nendpoint * sizeof(*lub_endpoint)) + pcdesc.len; lub_config = malloc(size); if (lub_config == NULL) { return (NULL); /* out of memory */ } /* make sure memory is initialised */ memset(lub_config, 0, size); lub_interface = (void *)(lub_config + 1); lub_alt_interface = (void *)(lub_interface + niface_no_alt); lub_endpoint = (void *)(lub_interface + niface); /* * Make a copy of the config descriptor, so that the caller can free * the inital config descriptor pointer! */ ptr = (void *)(lub_endpoint + nendpoint); memcpy(LIBUSB20_ADD_BYTES(ptr, 0), config_desc, pcdesc.len); pcdesc.ptr = LIBUSB20_ADD_BYTES(ptr, 0); config_desc = LIBUSB20_ADD_BYTES(ptr, 0); /* init config structure */ ptr = config_desc; LIBUSB20_INIT(LIBUSB20_CONFIG_DESC, &lub_config->desc); if (libusb20_me_decode(ptr, ptr[0], &lub_config->desc)) { /* ignore */ } lub_config->num_interface = 0; lub_config->interface = lub_interface; lub_config->extra.ptr = LIBUSB20_ADD_BYTES(ptr, ptr[0]); lub_config->extra.len = -ptr[0]; lub_config->extra.type = LIBUSB20_ME_IS_RAW; /* reset states */ niface = 0; iface_no = 0xFFFF; ptr = NULL; lub_interface--; lub_endpoint--; last_if = NULL; last_ep = NULL; /* descriptor pre-scan */ while ((ptr = libusb20_desc_foreach(&pcdesc, ptr))) { if (ptr[1] == LIBUSB20_DT_ENDPOINT) { if (last_if) { lub_endpoint++; last_ep = lub_endpoint; last_if->num_endpoints++; LIBUSB20_INIT(LIBUSB20_ENDPOINT_DESC, &last_ep->desc); if (libusb20_me_decode(ptr, ptr[0], &last_ep->desc)) { /* ignore */ } last_ep->extra.ptr = LIBUSB20_ADD_BYTES(ptr, ptr[0]); last_ep->extra.len = 0; last_ep->extra.type = LIBUSB20_ME_IS_RAW; } else { lub_config->extra.len += ptr[0]; } } else if ((ptr[1] == LIBUSB20_DT_INTERFACE) && (ptr[0] >= 4)) { if (ptr[2] != iface_no) { /* new interface */ iface_no = ptr[2]; lub_interface++; lub_config->num_interface++; last_if = lub_interface; niface++; } else { /* one more alternate setting */ lub_interface->num_altsetting++; last_if = lub_alt_interface; lub_alt_interface++; } LIBUSB20_INIT(LIBUSB20_INTERFACE_DESC, &last_if->desc); if (libusb20_me_decode(ptr, ptr[0], &last_if->desc)) { /* ignore */ } /* * Sometimes USB devices have corrupt interface * descriptors and we need to overwrite the provided * interface number! */ last_if->desc.bInterfaceNumber = niface - 1; last_if->extra.ptr = LIBUSB20_ADD_BYTES(ptr, ptr[0]); last_if->extra.len = 0; last_if->extra.type = LIBUSB20_ME_IS_RAW; last_if->endpoints = lub_endpoint + 1; last_if->altsetting = lub_alt_interface; last_if->num_altsetting = 0; last_if->num_endpoints = 0; last_ep = NULL; } else { /* unknown descriptor */ if (last_if) { if (last_ep) { last_ep->extra.len += ptr[0]; } else { last_if->extra.len += ptr[0]; } } else { lub_config->extra.len += ptr[0]; } } } return (lub_config); } /*------------------------------------------------------------------------* * libusb20_desc_foreach * * Safe traversal of USB descriptors. * * Return values: * NULL: End of descriptors * Else: Pointer to next descriptor *------------------------------------------------------------------------*/ const uint8_t * libusb20_desc_foreach(const struct libusb20_me_struct *pdesc, const uint8_t *psubdesc) { const uint8_t *start; const uint8_t *end; const uint8_t *desc_next; /* be NULL safe */ if (pdesc == NULL) return (NULL); start = (const uint8_t *)pdesc->ptr; end = LIBUSB20_ADD_BYTES(start, pdesc->len); /* get start of next descriptor */ if (psubdesc == NULL) psubdesc = start; else psubdesc = psubdesc + psubdesc[0]; /* check that the next USB descriptor is within the range */ if ((psubdesc < start) || (psubdesc >= end)) return (NULL); /* out of range, or EOD */ /* check start of the second next USB descriptor, if any */ desc_next = psubdesc + psubdesc[0]; if ((desc_next < start) || (desc_next > end)) return (NULL); /* out of range */ /* check minimum descriptor length */ if (psubdesc[0] < 3) return (NULL); /* too short descriptor */ return (psubdesc); /* return start of next descriptor */ } /*------------------------------------------------------------------------* * libusb20_me_get_1 - safety wrapper to read out one byte *------------------------------------------------------------------------*/ uint8_t libusb20_me_get_1(const struct libusb20_me_struct *ie, uint16_t offset) { if (offset < ie->len) { return (*((uint8_t *)LIBUSB20_ADD_BYTES(ie->ptr, offset))); } return (0); } /*------------------------------------------------------------------------* * libusb20_me_get_2 - safety wrapper to read out one word *------------------------------------------------------------------------*/ uint16_t libusb20_me_get_2(const struct libusb20_me_struct *ie, uint16_t offset) { return (libusb20_me_get_1(ie, offset) | (libusb20_me_get_1(ie, offset + 1) << 8)); } /*------------------------------------------------------------------------* * libusb20_me_encode - encode a message structure * * Description of parameters: * "len" - maximum length of output buffer * "ptr" - pointer to output buffer. If NULL, no data will be written * "pd" - source structure * * Return values: * 0..65535 - Number of bytes used, limited by the "len" input parameter. *------------------------------------------------------------------------*/ uint16_t libusb20_me_encode(void *ptr, uint16_t len, const void *pd) { const uint8_t *pf; /* pointer to format data */ uint8_t *buf; /* pointer to output buffer */ uint32_t pd_offset; /* decoded structure offset */ uint16_t len_old; /* old length */ uint16_t pd_count; /* decoded element count */ uint8_t me; /* message element */ /* initialise */ len_old = len; buf = ptr; pd_offset = sizeof(void *); pf = (*((struct libusb20_me_format *const *)pd))->format; /* scan */ while (1) { /* get information element */ me = (pf[0]) & LIBUSB20_ME_MASK; pd_count = pf[1] | (pf[2] << 8); pf += 3; /* encode the message element */ switch (me) { case LIBUSB20_ME_INT8: while (pd_count--) { uint8_t temp; if (len < 1) /* overflow */ goto done; if (buf) { temp = *((const uint8_t *) LIBUSB20_ADD_BYTES(pd, pd_offset)); buf[0] = temp; buf += 1; } pd_offset += 1; len -= 1; } break; case LIBUSB20_ME_INT16: pd_offset = -((-pd_offset) & ~1); /* align */ while (pd_count--) { uint16_t temp; if (len < 2) /* overflow */ goto done; if (buf) { temp = *((const uint16_t *) LIBUSB20_ADD_BYTES(pd, pd_offset)); buf[1] = (temp >> 8) & 0xFF; buf[0] = temp & 0xFF; buf += 2; } pd_offset += 2; len -= 2; } break; case LIBUSB20_ME_INT32: pd_offset = -((-pd_offset) & ~3); /* align */ while (pd_count--) { uint32_t temp; if (len < 4) /* overflow */ goto done; if (buf) { temp = *((const uint32_t *) LIBUSB20_ADD_BYTES(pd, pd_offset)); buf[3] = (temp >> 24) & 0xFF; buf[2] = (temp >> 16) & 0xFF; buf[1] = (temp >> 8) & 0xFF; buf[0] = temp & 0xFF; buf += 4; } pd_offset += 4; len -= 4; } break; case LIBUSB20_ME_INT64: pd_offset = -((-pd_offset) & ~7); /* align */ while (pd_count--) { uint64_t temp; if (len < 8) /* overflow */ goto done; if (buf) { temp = *((const uint64_t *) LIBUSB20_ADD_BYTES(pd, pd_offset)); buf[7] = (temp >> 56) & 0xFF; buf[6] = (temp >> 48) & 0xFF; buf[5] = (temp >> 40) & 0xFF; buf[4] = (temp >> 32) & 0xFF; buf[3] = (temp >> 24) & 0xFF; buf[2] = (temp >> 16) & 0xFF; buf[1] = (temp >> 8) & 0xFF; buf[0] = temp & 0xFF; buf += 8; } pd_offset += 8; len -= 8; } break; case LIBUSB20_ME_STRUCT: pd_offset = -((-pd_offset) & ~(LIBUSB20_ME_STRUCT_ALIGN - 1)); /* align */ while (pd_count--) { void *src_ptr; uint16_t src_len; struct libusb20_me_struct *ps; ps = LIBUSB20_ADD_BYTES(pd, pd_offset); switch (ps->type) { case LIBUSB20_ME_IS_RAW: src_len = ps->len; src_ptr = ps->ptr; break; case LIBUSB20_ME_IS_ENCODED: if (ps->len == 0) { /* * Length is encoded * in the data itself * and should be * correct: */ ps->len = 0xFFFF; } src_len = libusb20_me_get_1(pd, 0); src_ptr = LIBUSB20_ADD_BYTES(ps->ptr, 1); if (src_len == 0xFF) { /* length is escaped */ src_len = libusb20_me_get_2(pd, 1); src_ptr = LIBUSB20_ADD_BYTES(ps->ptr, 3); } break; case LIBUSB20_ME_IS_DECODED: /* reserve 3 length bytes */ src_len = libusb20_me_encode(NULL, 0xFFFF - 3, ps->ptr); src_ptr = NULL; break; default: /* empty structure */ src_len = 0; src_ptr = NULL; break; } if (src_len > 0xFE) { if (src_len > (0xFFFF - 3)) /* overflow */ goto done; if (len < (src_len + 3)) /* overflow */ goto done; if (buf) { buf[0] = 0xFF; buf[1] = (src_len & 0xFF); buf[2] = (src_len >> 8) & 0xFF; buf += 3; } len -= (src_len + 3); } else { if (len < (src_len + 1)) /* overflow */ goto done; if (buf) { buf[0] = (src_len & 0xFF); buf += 1; } len -= (src_len + 1); } /* check for buffer and non-zero length */ if (buf && src_len) { if (ps->type == LIBUSB20_ME_IS_DECODED) { /* * Repeat encode * procedure - we have * room for the * complete structure: */ - uint16_t dummy; - - dummy = libusb20_me_encode(buf, + (void) libusb20_me_encode(buf, 0xFFFF - 3, ps->ptr); } else { bcopy(src_ptr, buf, src_len); } buf += src_len; } pd_offset += sizeof(struct libusb20_me_struct); } break; default: goto done; } } done: return (len_old - len); } /*------------------------------------------------------------------------* * libusb20_me_decode - decode a message into a decoded structure * * Description of parameters: * "ptr" - message pointer * "len" - message length * "pd" - pointer to decoded structure * * Returns: * "0..65535" - number of bytes decoded, limited by "len" *------------------------------------------------------------------------*/ uint16_t libusb20_me_decode(const void *ptr, uint16_t len, void *pd) { const uint8_t *pf; /* pointer to format data */ const uint8_t *buf; /* pointer to input buffer */ uint32_t pd_offset; /* decoded structure offset */ uint16_t len_old; /* old length */ uint16_t pd_count; /* decoded element count */ uint8_t me; /* message element */ /* initialise */ len_old = len; buf = ptr; pd_offset = sizeof(void *); pf = (*((struct libusb20_me_format **)pd))->format; /* scan */ while (1) { /* get information element */ me = (pf[0]) & LIBUSB20_ME_MASK; pd_count = pf[1] | (pf[2] << 8); pf += 3; /* decode the message element by type */ switch (me) { case LIBUSB20_ME_INT8: while (pd_count--) { uint8_t temp; if (len < 1) { len = 0; temp = 0; } else { len -= 1; temp = buf[0]; buf++; } *((uint8_t *)LIBUSB20_ADD_BYTES(pd, pd_offset)) = temp; pd_offset += 1; } break; case LIBUSB20_ME_INT16: pd_offset = -((-pd_offset) & ~1); /* align */ while (pd_count--) { uint16_t temp; if (len < 2) { len = 0; temp = 0; } else { len -= 2; temp = buf[1] << 8; temp |= buf[0]; buf += 2; } *((uint16_t *)LIBUSB20_ADD_BYTES(pd, pd_offset)) = temp; pd_offset += 2; } break; case LIBUSB20_ME_INT32: pd_offset = -((-pd_offset) & ~3); /* align */ while (pd_count--) { uint32_t temp; if (len < 4) { len = 0; temp = 0; } else { len -= 4; temp = buf[3] << 24; temp |= buf[2] << 16; temp |= buf[1] << 8; temp |= buf[0]; buf += 4; } *((uint32_t *)LIBUSB20_ADD_BYTES(pd, pd_offset)) = temp; pd_offset += 4; } break; case LIBUSB20_ME_INT64: pd_offset = -((-pd_offset) & ~7); /* align */ while (pd_count--) { uint64_t temp; if (len < 8) { len = 0; temp = 0; } else { len -= 8; temp = ((uint64_t)buf[7]) << 56; temp |= ((uint64_t)buf[6]) << 48; temp |= ((uint64_t)buf[5]) << 40; temp |= ((uint64_t)buf[4]) << 32; temp |= buf[3] << 24; temp |= buf[2] << 16; temp |= buf[1] << 8; temp |= buf[0]; buf += 8; } *((uint64_t *)LIBUSB20_ADD_BYTES(pd, pd_offset)) = temp; pd_offset += 8; } break; case LIBUSB20_ME_STRUCT: pd_offset = -((-pd_offset) & ~(LIBUSB20_ME_STRUCT_ALIGN - 1)); /* align */ while (pd_count--) { uint16_t temp; - uint16_t dummy; struct libusb20_me_struct *ps; ps = LIBUSB20_ADD_BYTES(pd, pd_offset); if (ps->type == LIBUSB20_ME_IS_ENCODED) { /* * Pre-store a de-constified * pointer to the raw * structure: */ ps->ptr = LIBUSB20_ADD_BYTES(buf, 0); /* * Get the correct number of * length bytes: */ if (len != 0) { if (buf[0] == 0xFF) { ps->len = 3; } else { ps->len = 1; } } else { ps->len = 0; } } /* get the structure length */ if (len != 0) { if (buf[0] == 0xFF) { if (len < 3) { len = 0; temp = 0; } else { len -= 3; temp = buf[1] | (buf[2] << 8); buf += 3; } } else { len -= 1; temp = buf[0]; buf += 1; } } else { len = 0; temp = 0; } /* check for invalid length */ if (temp > len) { len = 0; temp = 0; } /* check wanted structure type */ switch (ps->type) { case LIBUSB20_ME_IS_ENCODED: /* check for zero length */ if (temp == 0) { /* * The pointer must * be valid: */ ps->ptr = LIBUSB20_ADD_BYTES( libusb20_me_encode_empty, 0); ps->len = 1; } else { ps->len += temp; } break; case LIBUSB20_ME_IS_RAW: /* update length and pointer */ ps->len = temp; ps->ptr = LIBUSB20_ADD_BYTES(buf, 0); break; case LIBUSB20_ME_IS_EMPTY: case LIBUSB20_ME_IS_DECODED: /* check for non-zero length */ if (temp != 0) { /* update type */ ps->type = LIBUSB20_ME_IS_DECODED; ps->len = 0; /* * Recursivly decode * the next structure */ - dummy = libusb20_me_decode(buf, + (void) libusb20_me_decode(buf, temp, ps->ptr); } else { /* update type */ ps->type = LIBUSB20_ME_IS_EMPTY; ps->len = 0; } break; default: /* * nothing to do - should * not happen */ ps->ptr = NULL; ps->len = 0; break; } buf += temp; len -= temp; pd_offset += sizeof(struct libusb20_me_struct); } break; default: goto done; } } done: return (len_old - len); }