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-rw-r--r--host/lib/usrp/n230/n230_fw_ctrl_iface.cpp245
1 files changed, 245 insertions, 0 deletions
diff --git a/host/lib/usrp/n230/n230_fw_ctrl_iface.cpp b/host/lib/usrp/n230/n230_fw_ctrl_iface.cpp
new file mode 100644
index 000000000..68fad3035
--- /dev/null
+++ b/host/lib/usrp/n230/n230_fw_ctrl_iface.cpp
@@ -0,0 +1,245 @@
+//
+// Copyright 2013 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include "n230_fw_ctrl_iface.hpp"
+
+#include <uhd/utils/byteswap.hpp>
+#include <uhd/utils/msg.hpp>
+#include <uhd/exception.hpp>
+#include <boost/format.hpp>
+#include <boost/asio.hpp> //used for htonl and ntohl
+#include "fw_comm_protocol.h"
+
+namespace uhd { namespace usrp { namespace n230 {
+
+//----------------------------------------------------------
+// Factory method
+//----------------------------------------------------------
+uhd::wb_iface::sptr n230_fw_ctrl_iface::make(
+ uhd::transport::udp_simple::sptr udp_xport,
+ const uint16_t product_id,
+ const bool verbose)
+{
+ return wb_iface::sptr(new n230_fw_ctrl_iface(udp_xport, product_id, verbose));
+}
+
+//----------------------------------------------------------
+// udp_fw_ctrl_iface
+//----------------------------------------------------------
+
+n230_fw_ctrl_iface::n230_fw_ctrl_iface(
+ uhd::transport::udp_simple::sptr udp_xport,
+ const uint16_t product_id,
+ const bool verbose) :
+ _product_id(product_id), _verbose(verbose), _udp_xport(udp_xport),
+ _seq_num(0)
+{
+ flush();
+ peek32(0);
+}
+
+n230_fw_ctrl_iface::~n230_fw_ctrl_iface()
+{
+ flush();
+}
+
+void n230_fw_ctrl_iface::flush()
+{
+ boost::mutex::scoped_lock lock(_mutex);
+ _flush();
+}
+
+void n230_fw_ctrl_iface::poke32(const wb_addr_type addr, const uint32_t data)
+{
+ boost::mutex::scoped_lock lock(_mutex);
+
+ for (size_t i = 1; i <= NUM_RETRIES; i++) {
+ try {
+ _poke32(addr, data);
+ return;
+ } catch(const std::exception &ex) {
+ const std::string error_msg = str(boost::format(
+ "udp fw poke32 failure #%u\n%s") % i % ex.what());
+ if (_verbose) UHD_MSG(warning) << error_msg << std::endl;
+ if (i == NUM_RETRIES) throw uhd::io_error(error_msg);
+ }
+ }
+}
+
+uint32_t n230_fw_ctrl_iface::peek32(const wb_addr_type addr)
+{
+ boost::mutex::scoped_lock lock(_mutex);
+
+ for (size_t i = 1; i <= NUM_RETRIES; i++) {
+ try {
+ return _peek32(addr);
+ } catch(const std::exception &ex) {
+ const std::string error_msg = str(boost::format(
+ "udp fw peek32 failure #%u\n%s") % i % ex.what());
+ if (_verbose) UHD_MSG(warning) << error_msg << std::endl;
+ if (i == NUM_RETRIES) throw uhd::io_error(error_msg);
+ }
+ }
+ return 0;
+}
+
+void n230_fw_ctrl_iface::_poke32(const wb_addr_type addr, const uint32_t data)
+{
+ //Load request struct
+ fw_comm_pkt_t request;
+ request.id = uhd::htonx<uint32_t>(FW_COMM_GENERATE_ID(_product_id));
+ request.flags = uhd::htonx<uint32_t>(FW_COMM_FLAGS_ACK | FW_COMM_CMD_POKE32);
+ request.sequence = uhd::htonx<uint32_t>(_seq_num++);
+ request.addr = uhd::htonx(addr);
+ request.data_words = 1;
+ request.data[0] = uhd::htonx(data);
+
+ //Send request
+ _flush();
+ _udp_xport->send(boost::asio::buffer(&request, sizeof(request)));
+
+ //Recv reply
+ fw_comm_pkt_t reply;
+ const size_t nbytes = _udp_xport->recv(boost::asio::buffer(&reply, sizeof(reply)), 1.0);
+ if (nbytes == 0) throw uhd::io_error("udp fw poke32 - reply timed out");
+
+ //Sanity checks
+ const size_t flags = uhd::ntohx<uint32_t>(reply.flags);
+ UHD_ASSERT_THROW(nbytes == sizeof(reply));
+ UHD_ASSERT_THROW(not (flags & FW_COMM_FLAGS_ERROR_MASK));
+ UHD_ASSERT_THROW(flags & FW_COMM_CMD_POKE32);
+ UHD_ASSERT_THROW(flags & FW_COMM_FLAGS_ACK);
+ UHD_ASSERT_THROW(reply.sequence == request.sequence);
+ UHD_ASSERT_THROW(reply.addr == request.addr);
+ UHD_ASSERT_THROW(reply.data[0] == request.data[0]);
+}
+
+uint32_t n230_fw_ctrl_iface::_peek32(const wb_addr_type addr)
+{
+ //Load request struct
+ fw_comm_pkt_t request;
+ request.id = uhd::htonx<uint32_t>(FW_COMM_GENERATE_ID(_product_id));
+ request.flags = uhd::htonx<uint32_t>(FW_COMM_FLAGS_ACK | FW_COMM_CMD_PEEK32);
+ request.sequence = uhd::htonx<uint32_t>(_seq_num++);
+ request.addr = uhd::htonx(addr);
+ request.data_words = 1;
+ request.data[0] = 0;
+
+ //Send request
+ _flush();
+ _udp_xport->send(boost::asio::buffer(&request, sizeof(request)));
+
+ //Recv reply
+ fw_comm_pkt_t reply;
+ const size_t nbytes = _udp_xport->recv(boost::asio::buffer(&reply, sizeof(reply)), 1.0);
+ if (nbytes == 0) throw uhd::io_error("udp fw peek32 - reply timed out");
+
+ //Sanity checks
+ const size_t flags = uhd::ntohx<uint32_t>(reply.flags);
+ UHD_ASSERT_THROW(nbytes == sizeof(reply));
+ UHD_ASSERT_THROW(not (flags & FW_COMM_FLAGS_ERROR_MASK));
+ UHD_ASSERT_THROW(flags & FW_COMM_CMD_PEEK32);
+ UHD_ASSERT_THROW(flags & FW_COMM_FLAGS_ACK);
+ UHD_ASSERT_THROW(reply.sequence == request.sequence);
+ UHD_ASSERT_THROW(reply.addr == request.addr);
+
+ //return result!
+ return uhd::ntohx<uint32_t>(reply.data[0]);
+}
+
+void n230_fw_ctrl_iface::_flush(void)
+{
+ char buff[FW_COMM_PROTOCOL_MTU] = {};
+ while (_udp_xport->recv(boost::asio::buffer(buff), 0.0)) {
+ /*NOP*/
+ }
+}
+
+std::vector<std::string> n230_fw_ctrl_iface::discover_devices(
+ const std::string& addr_hint, const std::string& port,
+ uint16_t product_id)
+{
+ std::vector<std::string> addrs;
+
+ //Create a UDP transport to communicate:
+ //Some devices will cause a throw when opened for a broadcast address.
+ //We print and recover so the caller can loop through all bcast addrs.
+ uhd::transport::udp_simple::sptr udp_bcast_xport;
+ try {
+ udp_bcast_xport = uhd::transport::udp_simple::make_broadcast(addr_hint, port);
+ } catch(const std::exception &e) {
+ UHD_MSG(error) << boost::format("Cannot open UDP transport on %s for discovery\n%s")
+ % addr_hint % e.what() << std::endl;
+ return addrs;
+ }
+
+ //Send dummy request
+ fw_comm_pkt_t request;
+ request.id = uhd::htonx<uint32_t>(FW_COMM_GENERATE_ID(product_id));
+ request.flags = uhd::htonx<uint32_t>(FW_COMM_FLAGS_ACK|FW_COMM_CMD_ECHO);
+ request.sequence = uhd::htonx<uint32_t>(std::rand());
+ udp_bcast_xport->send(boost::asio::buffer(&request, sizeof(request)));
+
+ //loop for replies until timeout
+ while (true) {
+ char buff[FW_COMM_PROTOCOL_MTU] = {};
+ const size_t nbytes = udp_bcast_xport->recv(boost::asio::buffer(buff), 0.050);
+ if (nbytes != sizeof(fw_comm_pkt_t)) break; //No more responses or responses are invalid
+
+ const fw_comm_pkt_t *reply = (const fw_comm_pkt_t *)buff;
+ if (request.id == reply->id &&
+ request.flags == reply->flags &&
+ request.sequence == reply->sequence)
+ {
+ addrs.push_back(udp_bcast_xport->get_recv_addr());
+ }
+ }
+
+ return addrs;
+}
+
+uint32_t n230_fw_ctrl_iface::get_iface_id(
+ const std::string& addr, const std::string& port,
+ uint16_t product_id)
+{
+ uhd::transport::udp_simple::sptr udp_xport =
+ uhd::transport::udp_simple::make_connected(addr, port);
+
+ //Send dummy request
+ fw_comm_pkt_t request;
+ request.id = uhd::htonx<uint32_t>(FW_COMM_GENERATE_ID(product_id));
+ request.flags = uhd::htonx<uint32_t>(FW_COMM_FLAGS_ACK|FW_COMM_CMD_ECHO);
+ request.sequence = uhd::htonx<uint32_t>(std::rand());
+ udp_xport->send(boost::asio::buffer(&request, sizeof(request)));
+
+ //loop for replies until timeout
+ char buff[FW_COMM_PROTOCOL_MTU] = {};
+ const size_t nbytes = udp_xport->recv(boost::asio::buffer(buff), 1.0);
+
+ const fw_comm_pkt_t *reply = (const fw_comm_pkt_t *)buff;
+ if (nbytes > 0 &&
+ request.id == reply->id &&
+ request.flags == reply->flags &&
+ request.sequence == reply->sequence)
+ {
+ return uhd::ntohx<uint32_t>(reply->data[0]);
+ } else {
+ throw uhd::io_error("udp get_iface_id - bad response");
+ }
+}
+
+}}} //namespace
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