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//
// Copyright 2010 Ettus Research LLC
//
#include <usrp_uhd/usrp/dboard/manager.hpp>
#include <boost/tuple/tuple.hpp>
#include <boost/format.hpp>
#include <map>
#include "dboards.hpp"
using namespace usrp_uhd::usrp::dboard;
/***********************************************************************
* register internal dboards
*
* Register internal/known dboards located in this build tree.
* Each board should have entries below mapping an id to a constructor.
* The xcvr type boards should register both rx and tx sides.
*
* This function will be called before new boards are registered.
* This allows for internal boards to be externally overridden.
* This function will also be called when creating a new manager
* to ensure that the maps are filled with the entries below.
**********************************************************************/
static void register_internal_dboards(void){
//ensure that this function can only be called once per instance
static bool called = false;
if (called) return; called = true;
//register the known dboards (dboard id, constructor, num subdevs)
manager::register_tx_subdev(0x0000, &basic_tx::make, 1);
manager::register_rx_subdev(0x0001, &basic_rx::make, 3);
}
/***********************************************************************
* storage and registering for dboards
**********************************************************************/
//hold a dboard constructor and the number of subdevs
typedef boost::tuple<manager::dboard_ctor_t, size_t> dboard_reg_val_t;
//map a dboard id to a registered value tuple
typedef std::map<manager::dboard_id_t, dboard_reg_val_t> dboard_reg_map_t;
//static instances of registered dboard ids
static dboard_reg_map_t dboard_rx_regs, dboard_tx_regs;
/*!
* Helper function to register a dboard contructor to its id.
* This should be called by the api calls to register subdevs.
*/
static void register_xx_subdev(
manager::dboard_id_t dboard_id,
manager::dboard_ctor_t dboard_ctor,
size_t num_subdevs,
dboard_reg_map_t &dboard_reg_map
){
register_internal_dboards(); //always call first
dboard_reg_map.insert(std::pair<manager::dboard_id_t, dboard_reg_val_t>(
dboard_id, dboard_reg_val_t(dboard_ctor, num_subdevs)
));
}
void manager::register_rx_subdev(
dboard_id_t dboard_id, dboard_ctor_t dboard_ctor, size_t num_subdevs
){
register_xx_subdev(dboard_id, dboard_ctor, num_subdevs, dboard_rx_regs);
}
void manager::register_tx_subdev(
dboard_id_t dboard_id, dboard_ctor_t dboard_ctor, size_t num_subdevs
){
register_xx_subdev(dboard_id, dboard_ctor, num_subdevs, dboard_tx_regs);
}
/***********************************************************************
* internal helper classes
**********************************************************************/
/*!
* A special wax proxy object that forwards calls to a subdev.
* A sptr to an instance will be used in the properties structure.
*/
class subdev_proxy : boost::noncopyable, public wax::obj{
public:
typedef boost::shared_ptr<subdev_proxy> sptr;
enum type_t{RX_TYPE, TX_TYPE};
//structors
subdev_proxy(xcvr_base::sptr subdev, type_t type)
: _subdev(subdev), _type(type){
/* NOP */
}
~subdev_proxy(void){
/* NOP */
}
private:
xcvr_base::sptr _subdev;
type_t _type;
//forward the get calls to the rx or tx
void get(const wax::type &key, wax::type &val){
switch(_type){
case RX_TYPE: return _subdev->rx_get(key, val);
case TX_TYPE: return _subdev->tx_get(key, val);
}
}
//forward the set calls to the rx or tx
void set(const wax::type &key, const wax::type &val){
switch(_type){
case RX_TYPE: return _subdev->rx_set(key, val);
case TX_TYPE: return _subdev->tx_set(key, val);
}
}
};
/***********************************************************************
* dboard manager methods
**********************************************************************/
static void create_subdevs(
dboard_reg_map_t &dboard_reg_map,
manager::dboard_id_t dboard_id,
interface::sptr dboard_interface,
std::vector<xcvr_base::sptr> &subdevs,
std::string const& xx_type
){
//verify that there is a registered constructor for this id
if (dboard_reg_map.count(dboard_id) == 0){
throw std::runtime_error(str(
boost::format("Unknown %s dboard id: 0x%04x") % xx_type % dboard_id
));
}
//create new subdevices for the dboard ids
for (size_t i = 0; i < dboard_reg_map[dboard_id].get<1>(); i++){
subdevs.push_back(
dboard_reg_map[dboard_id].get<0>()(
xcvr_base::ctor_args_t(i, dboard_interface)
)
);
}
}
manager::manager(
dboard_id_t rx_dboard_id,
dboard_id_t tx_dboard_id,
interface::sptr dboard_interface
){
register_internal_dboards(); //always call first
create_subdevs(dboard_rx_regs, rx_dboard_id, dboard_interface, _rx_dboards, "rx");
create_subdevs(dboard_tx_regs, tx_dboard_id, dboard_interface, _tx_dboards, "tx");
}
manager::~manager(void){
/* NOP */
}
size_t manager::get_num_rx_subdevs(void){
return _rx_dboards.size();
}
size_t manager::get_num_tx_subdevs(void){
return _tx_dboards.size();
}
wax::obj::sptr manager::get_rx_subdev(size_t subdev_index){
return wax::obj::sptr(new subdev_proxy(
_rx_dboards.at(subdev_index), subdev_proxy::RX_TYPE)
);
}
wax::obj::sptr manager::get_tx_subdev(size_t subdev_index){
return wax::obj::sptr(new subdev_proxy(
_tx_dboards.at(subdev_index), subdev_proxy::TX_TYPE)
);
}
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