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/*
* Haiku Backend for libusb
* Copyright © 2014 Akshay Jaggi <akshay1994.leo@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <new>
#include <vector>
#include "haiku_usb.h"
USBRoster gUsbRoster;
int32 gInitCount = 0;
static int haiku_get_config_descriptor(struct libusb_device *, uint8_t,
void *, size_t);
static int
haiku_init(struct libusb_context *ctx)
{
if (atomic_add(&gInitCount, 1) == 0)
return gUsbRoster.Start();
return LIBUSB_SUCCESS;
}
static void
haiku_exit(struct libusb_context *ctx)
{
UNUSED(ctx);
if (atomic_add(&gInitCount, -1) == 1)
gUsbRoster.Stop();
}
static int
haiku_open(struct libusb_device_handle *dev_handle)
{
USBDevice *dev = *((USBDevice **)usbi_get_device_priv(dev_handle->dev));
USBDeviceHandle *handle = new(std::nothrow) USBDeviceHandle(dev);
if (handle == NULL)
return LIBUSB_ERROR_NO_MEM;
if (handle->InitCheck() == false) {
delete handle;
return LIBUSB_ERROR_NO_DEVICE;
}
*((USBDeviceHandle **)usbi_get_device_handle_priv(dev_handle)) = handle;
return LIBUSB_SUCCESS;
}
static void
haiku_close(struct libusb_device_handle *dev_handle)
{
USBDeviceHandle **pHandle = (USBDeviceHandle **)usbi_get_device_handle_priv(dev_handle);
USBDeviceHandle *handle = *pHandle;
if (handle == NULL)
return;
delete handle;
*pHandle = NULL;
}
static int
haiku_get_active_config_descriptor(struct libusb_device *device, void *buffer, size_t len)
{
USBDevice *dev = *((USBDevice **)usbi_get_device_priv(device));
return haiku_get_config_descriptor(device, dev->ActiveConfigurationIndex(), buffer, len);
}
static int
haiku_get_config_descriptor(struct libusb_device *device, uint8_t config_index, void *buffer, size_t len)
{
USBDevice *dev = *((USBDevice **)usbi_get_device_priv(device));
const usb_configuration_descriptor *config = dev->ConfigurationDescriptor(config_index);
if (config == NULL) {
usbi_err(DEVICE_CTX(device), "failed getting configuration descriptor");
return LIBUSB_ERROR_IO;
}
if (len > config->total_length) {
len = config->total_length;
}
memcpy(buffer, config, len);
return len;
}
static int
haiku_set_configuration(struct libusb_device_handle *dev_handle, int config)
{
USBDeviceHandle *handle= *((USBDeviceHandle **)usbi_get_device_handle_priv(dev_handle));
if (config <= 0)
return LIBUSB_ERROR_NOT_SUPPORTED; // cannot unconfigure
return handle->SetConfiguration((uint8)config);
}
static int
haiku_claim_interface(struct libusb_device_handle *dev_handle, int interface_number)
{
USBDeviceHandle *handle = *((USBDeviceHandle **)usbi_get_device_handle_priv(dev_handle));
return handle->ClaimInterface(interface_number);
}
static int
haiku_set_altsetting(struct libusb_device_handle *dev_handle, int interface_number, int altsetting)
{
USBDeviceHandle *handle = *((USBDeviceHandle **)usbi_get_device_handle_priv(dev_handle));
return handle->SetAltSetting(interface_number, altsetting);
}
static int
haiku_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
{
USBDeviceHandle *handle = *((USBDeviceHandle **)usbi_get_device_handle_priv(dev_handle));
return handle->ClearHalt(endpoint);
}
static int
haiku_release_interface(struct libusb_device_handle *dev_handle, int interface_number)
{
USBDeviceHandle *handle = *((USBDeviceHandle **)usbi_get_device_handle_priv(dev_handle));
haiku_set_altsetting(dev_handle,interface_number, 0);
return handle->ReleaseInterface(interface_number);
}
static int
haiku_submit_transfer(struct usbi_transfer *itransfer)
{
struct libusb_transfer *fLibusbTransfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
USBDeviceHandle *fDeviceHandle = *((USBDeviceHandle **)usbi_get_device_handle_priv(fLibusbTransfer->dev_handle));
return fDeviceHandle->SubmitTransfer(itransfer);
}
static int
haiku_cancel_transfer(struct usbi_transfer *itransfer)
{
struct libusb_transfer *fLibusbTransfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
USBDeviceHandle *fDeviceHandle = *((USBDeviceHandle **)usbi_get_device_handle_priv(fLibusbTransfer->dev_handle));
return fDeviceHandle->CancelTransfer(*((USBTransfer **)usbi_get_transfer_priv(itransfer)));
}
static int
haiku_handle_transfer_completion(struct usbi_transfer *itransfer)
{
USBTransfer **pTransfer = (USBTransfer **)usbi_get_transfer_priv(itransfer);
USBTransfer *transfer = *pTransfer;
usbi_mutex_lock(&itransfer->lock);
if (transfer->IsCancelled()) {
delete transfer;
*pTransfer = NULL;
usbi_mutex_unlock(&itransfer->lock);
if (itransfer->transferred < 0)
itransfer->transferred = 0;
return usbi_handle_transfer_cancellation(itransfer);
}
libusb_transfer_status status = LIBUSB_TRANSFER_COMPLETED;
if (itransfer->transferred < 0) {
usbi_err(ITRANSFER_CTX(itransfer), "error in transfer");
status = LIBUSB_TRANSFER_ERROR;
itransfer->transferred = 0;
}
delete transfer;
*pTransfer = NULL;
usbi_mutex_unlock(&itransfer->lock);
return usbi_handle_transfer_completion(itransfer, status);
}
const struct usbi_os_backend usbi_backend = {
/*.name =*/ "Haiku usbfs",
/*.caps =*/ 0,
/*.init =*/ haiku_init,
/*.exit =*/ haiku_exit,
/*.set_option =*/ NULL,
/*.get_device_list =*/ NULL,
/*.hotplug_poll =*/ NULL,
/*.wrap_sys_device =*/ NULL,
/*.open =*/ haiku_open,
/*.close =*/ haiku_close,
/*.get_active_config_descriptor =*/ haiku_get_active_config_descriptor,
/*.get_config_descriptor =*/ haiku_get_config_descriptor,
/*.get_config_descriptor_by_value =*/ NULL,
/*.get_configuration =*/ NULL,
/*.set_configuration =*/ haiku_set_configuration,
/*.claim_interface =*/ haiku_claim_interface,
/*.release_interface =*/ haiku_release_interface,
/*.set_interface_altsetting =*/ haiku_set_altsetting,
/*.clear_halt =*/ haiku_clear_halt,
/*.reset_device =*/ NULL,
/*.alloc_streams =*/ NULL,
/*.free_streams =*/ NULL,
/*.dev_mem_alloc =*/ NULL,
/*.dev_mem_free =*/ NULL,
/*.kernel_driver_active =*/ NULL,
/*.detach_kernel_driver =*/ NULL,
/*.attach_kernel_driver =*/ NULL,
/*.destroy_device =*/ NULL,
/*.submit_transfer =*/ haiku_submit_transfer,
/*.cancel_transfer =*/ haiku_cancel_transfer,
/*.clear_transfer_priv =*/ NULL,
/*.handle_events =*/ NULL,
/*.handle_transfer_completion =*/ haiku_handle_transfer_completion,
/*.context_priv_size =*/ 0,
/*.device_priv_size =*/ sizeof(USBDevice *),
/*.device_handle_priv_size =*/ sizeof(USBDeviceHandle *),
/*.transfer_priv_size =*/ sizeof(USBTransfer *),
};
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