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path: root/host/lib/usrp/usrp2/mboard_impl.cpp
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Diffstat (limited to 'host/lib/usrp/usrp2/mboard_impl.cpp')
-rw-r--r--host/lib/usrp/usrp2/mboard_impl.cpp69
1 files changed, 60 insertions, 9 deletions
diff --git a/host/lib/usrp/usrp2/mboard_impl.cpp b/host/lib/usrp/usrp2/mboard_impl.cpp
index 766ea993c..4dcc45fd3 100644
--- a/host/lib/usrp/usrp2/mboard_impl.cpp
+++ b/host/lib/usrp/usrp2/mboard_impl.cpp
@@ -27,6 +27,10 @@
#include <iostream>
#include <boost/date_time/posix_time/posix_time.hpp>
+static const double mimo_clock_delay_usrp2_rev4 = 4.18e-9;
+static const double mimo_clock_delay_usrp_n2xx = 0; //TODO
+static const int mimo_clock_sync_delay_cycles = 134;
+
using namespace uhd;
using namespace uhd::usrp;
using namespace boost::posix_time;
@@ -38,8 +42,9 @@ usrp2_mboard_impl::usrp2_mboard_impl(
size_t index,
transport::udp_simple::sptr ctrl_transport,
transport::zero_copy_if::sptr data_transport,
- size_t recv_samps_per_packet,
- const device_addr_t &flow_control_hints
+ transport::zero_copy_if::sptr err0_transport,
+ const device_addr_t &device_args,
+ size_t recv_samps_per_packet
):
_index(index),
_iface(usrp2_iface::make(ctrl_transport))
@@ -47,18 +52,21 @@ usrp2_mboard_impl::usrp2_mboard_impl(
//Send a small data packet so the usrp2 knows the udp source port.
//This setup must happen before further initialization occurs
//or the async update packets will cause ICMP destination unreachable.
- transport::managed_send_buffer::sptr send_buff = data_transport->get_send_buff();
+ transport::managed_send_buffer::sptr send_buff;
static const boost::uint32_t data[2] = {
uhd::htonx(boost::uint32_t(0 /* don't care seq num */)),
uhd::htonx(boost::uint32_t(USRP2_INVALID_VRT_HEADER))
};
+ send_buff = data_transport->get_send_buff();
+ std::memcpy(send_buff->cast<void*>(), &data, sizeof(data));
+ send_buff->commit(sizeof(data));
+ send_buff = err0_transport->get_send_buff();
std::memcpy(send_buff->cast<void*>(), &data, sizeof(data));
send_buff->commit(sizeof(data));
//contruct the interfaces to mboard perifs
_clock_ctrl = usrp2_clock_ctrl::make(_iface);
_codec_ctrl = usrp2_codec_ctrl::make(_iface);
- _serdes_ctrl = usrp2_serdes_ctrl::make(_iface);
//_gps_ctrl = usrp2_gps_ctrl::make(_iface);
//if(_gps_ctrl->gps_detected()) std::cout << "GPS time: " << _gps_ctrl->get_time() << std::endl;
@@ -98,14 +106,14 @@ usrp2_mboard_impl::usrp2_mboard_impl(
_iface->poke32(_iface->regs.tx_ctrl_policy, U2_FLAG_TX_CTRL_POLICY_NEXT_PACKET);
//setting the cycles per update (disabled by default)
- const double ups_per_sec = flow_control_hints.cast<double>("ups_per_sec", 0.0);
+ const double ups_per_sec = device_args.cast<double>("ups_per_sec", 0.0);
if (ups_per_sec > 0.0){
const size_t cycles_per_up = size_t(_clock_ctrl->get_master_clock_rate()/ups_per_sec);
_iface->poke32(_iface->regs.tx_ctrl_cycles_per_up, U2_FLAG_TX_CTRL_UP_ENB | cycles_per_up);
}
//setting the packets per update (enabled by default)
- const double ups_per_fifo = flow_control_hints.cast<double>("ups_per_fifo", 8.0);
+ const double ups_per_fifo = device_args.cast<double>("ups_per_fifo", 8.0);
if (ups_per_fifo > 0.0){
const size_t packets_per_up = size_t(usrp2_impl::sram_bytes/ups_per_fifo/data_transport->get_send_frame_size());
_iface->poke32(_iface->regs.tx_ctrl_packets_per_up, U2_FLAG_TX_CTRL_UP_ENB | packets_per_up);
@@ -118,6 +126,22 @@ usrp2_mboard_impl::usrp2_mboard_impl(
init_duc_config();
//initialize the clock configuration
+ if (device_args.has_key("mimo_mode")){
+ if (device_args["mimo_mode"] == "master"){
+ _mimo_clocking_mode_is_master = true;
+ }
+ else if (device_args["mimo_mode"] == "slave"){
+ _mimo_clocking_mode_is_master = false;
+ }
+ else throw std::runtime_error(
+ "mimo_mode must be set to master or slave"
+ );
+ }
+ else {
+ _mimo_clocking_mode_is_master = bool(_iface->peek32(_iface->regs.status) & (1 << 8));
+ }
+ std::cout << boost::format("mboard%d MIMO %s") % _index %
+ (_mimo_clocking_mode_is_master?"master":"slave") << std::endl;
init_clock_config();
//init the codec before the dboard
@@ -155,7 +179,6 @@ void usrp2_mboard_impl::update_clock_config(void){
//translate pps source enums
switch(_clock_config.pps_source){
case clock_config_t::PPS_SMA: pps_flags |= U2_FLAG_TIME64_PPS_SMA; break;
- case clock_config_t::PPS_MIMO: pps_flags |= U2_FLAG_TIME64_PPS_MIMO; break;
default: throw std::runtime_error("unhandled clock configuration pps source");
}
@@ -176,7 +199,6 @@ void usrp2_mboard_impl::update_clock_config(void){
switch(_clock_config.ref_source){
case clock_config_t::REF_INT : _iface->poke32(_iface->regs.misc_ctrl_clock, 0x12); break;
case clock_config_t::REF_SMA : _iface->poke32(_iface->regs.misc_ctrl_clock, 0x1C); break;
- case clock_config_t::REF_MIMO: _iface->poke32(_iface->regs.misc_ctrl_clock, 0x15); break;
default: throw std::runtime_error("unhandled clock configuration reference source");
}
_clock_ctrl->enable_external_ref(true); //USRP2P has an internal 10MHz TCXO
@@ -187,7 +209,6 @@ void usrp2_mboard_impl::update_clock_config(void){
switch(_clock_config.ref_source){
case clock_config_t::REF_INT : _iface->poke32(_iface->regs.misc_ctrl_clock, 0x10); break;
case clock_config_t::REF_SMA : _iface->poke32(_iface->regs.misc_ctrl_clock, 0x1C); break;
- case clock_config_t::REF_MIMO: _iface->poke32(_iface->regs.misc_ctrl_clock, 0x15); break;
default: throw std::runtime_error("unhandled clock configuration reference source");
}
_clock_ctrl->enable_external_ref(_clock_config.ref_source != clock_config_t::REF_INT);
@@ -195,6 +216,36 @@ void usrp2_mboard_impl::update_clock_config(void){
case usrp2_iface::USRP_NXXX: break;
}
+
+ //Handle the serdes clocking based on master/slave mode:
+ // - Masters always drive the clock over serdes.
+ // - Slaves always lock to this serdes clock.
+ // - Slaves lock their time over the serdes.
+ if (_mimo_clocking_mode_is_master){
+ _clock_ctrl->enable_mimo_clock_out(true);
+ switch(_iface->get_rev()){
+ case usrp2_iface::USRP_N200:
+ case usrp2_iface::USRP_N210:
+ _clock_ctrl->set_mimo_clock_delay(mimo_clock_delay_usrp_n2xx);
+ break;
+
+ case usrp2_iface::USRP2_REV4:
+ _clock_ctrl->set_mimo_clock_delay(mimo_clock_delay_usrp2_rev4);
+ break;
+
+ default: break; //not handled
+ }
+ _iface->poke32(_iface->regs.time64_mimo_sync, 0);
+ }
+ else{
+ _iface->poke32(_iface->regs.misc_ctrl_clock, 0x15);
+ _clock_ctrl->enable_external_ref(true);
+ _clock_ctrl->enable_mimo_clock_out(false);
+ _iface->poke32(_iface->regs.time64_mimo_sync,
+ (1 << 8) | (mimo_clock_sync_delay_cycles & 0xff)
+ );
+ }
+
}
void usrp2_mboard_impl::set_time_spec(const time_spec_t &time_spec, bool now){
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 16:30:01 +0000