diff options
Diffstat (limited to 'lib/libusb/libusb10.c')
| -rw-r--r-- | lib/libusb/libusb10.c | 1522 |
1 files changed, 1522 insertions, 0 deletions
diff --git a/lib/libusb/libusb10.c b/lib/libusb/libusb10.c new file mode 100644 index 0000000..0a7c1e6 --- /dev/null +++ b/lib/libusb/libusb10.c @@ -0,0 +1,1522 @@ +/* $FreeBSD$ */ +/*- + * 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. + */ + +#include <sys/fcntl.h> +#include <sys/ioctl.h> +#include <sys/queue.h> + +#include <assert.h> +#include <errno.h> +#include <poll.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#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; + 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); + + pthread_mutex_init(&ctx->ctx_lock, NULL); + pthread_cond_init(&ctx->ctx_cond, NULL); + + 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)); +} + +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); +} + +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); + + for (j = 0; j < i; j++) { + pdev = devs[j]->os_priv; + pdesc = libusb20_dev_get_device_desc(pdev); + /* + * 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) { + if (libusb_open(devs[j], &pdev) < 0) + pdev = NULL; + break; + } + } + if (j == i) + pdev = NULL; + + 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; + 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_BUSY; + + if (!err) + dev->claimed_interfaces |= (1 << interface_number); + CTX_UNLOCK(dev->ctx); + return (err); +} + +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 index) +{ + index &= 1; /* double buffering */ + + index |= (endpoint & LIBUSB20_ENDPOINT_ADDRESS_MASK) * 4; + + if (endpoint & LIBUSB20_ENDPOINT_DIR_MASK) { + /* this is an IN endpoint */ + index |= 2; + } + return (libusb20_tr_get_pointer(pdev, 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; + 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 */ + + 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 */ + + /* 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; + 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; + uint32_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; + + if (endpoint > 255) + return (LIBUSB_ERROR_INVALID_PARAM); + + 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; + uint32_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; + + if (endpoint > 255) + return (LIBUSB_ERROR_INVALID_PARAM); + + 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"); + } +} |
