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//
// Copyright 2010-2011 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 "e100_impl.hpp"
#include "e100_regs.hpp"
#include <uhd/utils/msg.hpp>
#include <uhd/usrp/device_props.hpp>
#include <uhd/usrp/mboard_props.hpp>
#include <uhd/exception.hpp>
#include <uhd/utils/static.hpp>
#include <uhd/utils/images.hpp>
#include <boost/format.hpp>
#include <boost/filesystem.hpp>
#include <boost/functional/hash.hpp>
#include <fstream>
using namespace uhd;
using namespace uhd::usrp;
namespace fs = boost::filesystem;
/***********************************************************************
* Discovery
**********************************************************************/
static device_addrs_t e100_find(const device_addr_t &hint){
device_addrs_t e100_addrs;
//return an empty list of addresses when type is set to non-usrp-e
if (hint.has_key("type") and hint["type"] != "e100") return e100_addrs;
//device node not provided, assume its 0
if (not hint.has_key("node")){
device_addr_t new_addr = hint;
new_addr["node"] = "/dev/usrp_e0";
return e100_find(new_addr);
}
//use the given device node name
if (fs::exists(hint["node"])){
device_addr_t new_addr;
new_addr["type"] = "e100";
new_addr["node"] = fs::system_complete(fs::path(hint["node"])).string();
try{
e100_iface::sptr iface = e100_iface::make();
new_addr["name"] = iface->mb_eeprom["name"];
new_addr["serial"] = iface->mb_eeprom["serial"];
}
catch(const std::exception &e){
new_addr["name"] = "";
new_addr["serial"] = "";
}
if (
(not hint.has_key("name") or hint["name"] == new_addr["name"]) and
(not hint.has_key("serial") or hint["serial"] == new_addr["serial"])
){
e100_addrs.push_back(new_addr);
}
}
return e100_addrs;
}
/***********************************************************************
* Make
**********************************************************************/
static size_t hash_fpga_file(const std::string &file_path){
size_t hash = 0;
std::ifstream file(file_path.c_str());
if (not file.good()) throw uhd::io_error("cannot open fpga file for read: " + file_path);
while (file.good()) boost::hash_combine(hash, file.get());
file.close();
return hash;
}
static device::sptr e100_make(const device_addr_t &device_addr){
//setup the main interface into fpga
const std::string node = device_addr["node"];
e100_iface::sptr iface = e100_iface::make();
//extract the fpga path for usrp-e and compute hash
const std::string e100_fpga_image = find_image_path(device_addr.get("fpga", E100_FPGA_FILE_NAME));
const boost::uint32_t file_hash = boost::uint32_t(hash_fpga_file(e100_fpga_image));
//When the hash does not match:
// - close the device node
// - load the fpga bin file
// - re-open the device node
iface->open(node); //open here so we can do FPGA hash check
if (iface->peek32(E100_REG_RB_MISC_TEST32) != file_hash){
iface->close();
e100_load_fpga(e100_fpga_image);
iface->open(node);
}
//setup clock control here to ensure that the FPGA has a good clock before we continue
const double master_clock_rate = device_addr.cast<double>("master_clock_rate", E100_DEFAULT_CLOCK_RATE);
e100_clock_ctrl::sptr clock_ctrl = e100_clock_ctrl::make(iface, master_clock_rate);
//Perform wishbone readback tests, these tests also write the hash
bool test_fail = false;
UHD_MSG(status) << "Performing wishbone readback test... " << std::flush;
for (size_t i = 0; i < 100; i++){
iface->poke32(E100_REG_SR_MISC_TEST32, file_hash);
test_fail = iface->peek32(E100_REG_RB_MISC_TEST32) != file_hash;
if (test_fail) break; //exit loop on any failure
}
UHD_MSG(status) << ((test_fail)? " fail" : "pass") << std::endl;
if (test_fail) UHD_MSG(error) << boost::format(
"The FPGA is either clocked improperly\n"
"or the FPGA build is not compatible.\n"
"Subsequent errors may follow...\n"
);
//check that the compatibility is correct
const boost::uint16_t fpga_compat_num = iface->peek16(E100_REG_MISC_COMPAT);
if (fpga_compat_num != E100_FPGA_COMPAT_NUM){
throw uhd::runtime_error(str(boost::format(
"\nPlease update the FPGA image for your device.\n"
"See the application notes for USRP E-Series for instructions.\n"
"Expected FPGA compatibility number 0x%x, but got 0x%x:\n"
"The FPGA build is not compatible with the host code build."
) % E100_FPGA_COMPAT_NUM % fpga_compat_num));
}
return device::sptr(new e100_impl(device_addr, iface, clock_ctrl));
}
UHD_STATIC_BLOCK(register_e100_device){
device::register_device(&e100_find, &e100_make);
}
/***********************************************************************
* Structors
**********************************************************************/
e100_impl::e100_impl(
const uhd::device_addr_t &device_addr,
e100_iface::sptr iface,
e100_clock_ctrl::sptr clock_ctrl
):
_iface(iface),
_clock_ctrl(clock_ctrl),
_codec_ctrl(e100_codec_ctrl::make(_iface)),
_data_xport(e100_make_mmap_zero_copy(_iface)),
_recv_frame_size(std::min(_data_xport->get_recv_frame_size(), size_t(device_addr.cast<double>("recv_frame_size", 1e9)))),
_send_frame_size(std::min(_data_xport->get_send_frame_size(), size_t(device_addr.cast<double>("send_frame_size", 1e9))))
{
//setup otw types
_send_otw_type.width = 16;
_send_otw_type.shift = 0;
_send_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
_recv_otw_type.width = 16;
_recv_otw_type.shift = 0;
_recv_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
//initialize the mboard
mboard_init();
//initialize the dboards
dboard_init();
//initialize the dsps
dsp_init();
//init the codec properties
codec_init();
//set default subdev specs
this->mboard_set(MBOARD_PROP_RX_SUBDEV_SPEC, subdev_spec_t());
this->mboard_set(MBOARD_PROP_TX_SUBDEV_SPEC, subdev_spec_t());
//init the io send/recv
io_init();
}
e100_impl::~e100_impl(void){
/* NOP */
}
/***********************************************************************
* Device Get
**********************************************************************/
void e100_impl::get(const wax::obj &key_, wax::obj &val){
named_prop_t key = named_prop_t::extract(key_);
//handle the get request conditioned on the key
switch(key.as<device_prop_t>()){
case DEVICE_PROP_NAME:
val = std::string("usrp-e device");
return;
case DEVICE_PROP_MBOARD:
UHD_ASSERT_THROW(key.name == "");
val = _mboard_proxy->get_link();
return;
case DEVICE_PROP_MBOARD_NAMES:
val = prop_names_t(1, ""); //vector of size 1 with empty string
return;
default: UHD_THROW_PROP_GET_ERROR();
}
}
/***********************************************************************
* Device Set
**********************************************************************/
void e100_impl::set(const wax::obj &, const wax::obj &){
UHD_THROW_PROP_SET_ERROR();
}
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