source: mainline/uspace/drv/uhci/utils/hc_synchronizer.c@ 15be932

#include "debug.h"
#include "hc_synchronizer.h"
#include "uhci.h"

void sync_init(sync_value_t *value)
{
        assert(value);
        fibril_semaphore_initialize(&value->done, 0);
}
/*----------------------------------------------------------------------------*/
void sync_wait_for(sync_value_t *value)
{
        assert( value );
        fibril_semaphore_down(&value->done);
}
/*----------------------------------------------------------------------------*/
void sync_in_callback(
  device_t *device, usb_transaction_outcome_t result, size_t size, void *arg)
{
        sync_value_t *value = arg;
        assert(value);
        value->size = size;
        value->result = result;
        fibril_semaphore_up(&value->done);
}
/*----------------------------------------------------------------------------*/
void sync_out_callback(
  device_t *device, usb_transaction_outcome_t result, void *arg)
{
        sync_value_t *value = arg;
        assert(value);
        value->result = result;
        fibril_semaphore_up(&value->done);
}
/*----------------------------------------------------------------------------*/
int uhci_setup_sync(
  device_t *hc,
  usb_target_t target,
  usb_transfer_type_t type,
  void *buffer, size_t size,
  sync_value_t *result
  )
{
        assert(result);
        sync_init(result);

        int ret =
          uhci_setup(hc, target, type, buffer, size,
                  sync_out_callback, (void*)result);

        if (ret) {
                uhci_print_error("sync setup transaction failed(%d).\n", ret);
                return ret;
        }

        uhci_print_verbose("setup transaction sent, waiting to complete.\n");
        sync_wait_for(result);

        return ret;
}