1 files changed, 121 insertions, 0 deletions
diff --git a/host/lib/usrp/e300/e300_sysfs_hooks.cpp b/host/lib/usrp/e300/e300_sysfs_hooks.cpp
new file mode 100644
index 000000000..fdeaf0858
--- /dev/null
+++ b/host/lib/usrp/e300/e300_sysfs_hooks.cpp
@@ -0,0 +1,121 @@
+//
+// Copyright 2013-2014 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/>.
+//
+
+#ifdef E300_NATIVE
+
+#include <cstdio>
+#include <cstdlib>
+#include <string>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include <libudev.h>
+
+#include <boost/format.hpp>
+#include <boost/lexical_cast.hpp>
+
+#include <uhd/utils/msg.hpp>
+#include <uhd/exception.hpp>
+
+static const std::string E300_AXI_FPGA_SYSFS = "40000000.axi-fpga";
+static const std::string E300_XDEV_SYSFS = "f8007000.ps7-dev-cfg";
+
+std::string e300_get_sysfs_attr(const std::string &node, const std::string &attr)
+{
+    udev *udev;
+    udev_enumerate *enumerate;
+    udev_list_entry *devices, *dev_list_entry;
+    udev_device *dev;
+    std::string retstring;
+
+    udev = udev_new();
+
+    if (!udev) {
+        throw uhd::lookup_error("Failed to get udev handle.");
+    }
+
+    enumerate = udev_enumerate_new(udev);
+    udev_enumerate_add_match_sysname(enumerate, node.c_str());
+    udev_enumerate_scan_devices(enumerate);
+    devices = udev_enumerate_get_list_entry(enumerate);
+
+    udev_list_entry_foreach(dev_list_entry, devices)
+    {
+        const char *path;
+
+        path = udev_list_entry_get_name(dev_list_entry);
+        dev = udev_device_new_from_syspath(udev, path);
+
+       retstring = udev_device_get_sysattr_value(dev, attr.c_str());
+       if (retstring.size())
+           break;
+    }
+
+    udev_enumerate_unref(enumerate);
+    udev_unref(udev);
+
+    return retstring;
+}
+
+static bool e300_fpga_loaded_successfully(void)
+{
+    return boost::lexical_cast<bool>(e300_get_sysfs_attr(E300_XDEV_SYSFS, "prog_done"));
+}
+
+#include "e300_fifo_config.hpp"
+#include <uhd/exception.hpp>
+
+e300_fifo_config_t e300_read_sysfs(void)
+{
+
+    if (not e300_fpga_loaded_successfully())
+    {
+        throw uhd::runtime_error("E300 FPGA load failed!");
+    }
+
+    e300_fifo_config_t config;
+
+    config.buff_length  = boost::lexical_cast<unsigned long>(
+        e300_get_sysfs_attr(E300_AXI_FPGA_SYSFS, "buffer_length"));
+    config.ctrl_length = boost::lexical_cast<unsigned long>(
+        e300_get_sysfs_attr(E300_AXI_FPGA_SYSFS, "control_length"));
+    config.phys_addr = boost::lexical_cast<unsigned long>(
+        e300_get_sysfs_attr(E300_AXI_FPGA_SYSFS, "phys_addr"));
+
+    return config;
+}
+
+#else //E300_NATIVE
+
+#include "e300_fifo_config.hpp"
+#include <uhd/exception.hpp>
+
+e300_fifo_config_t e300_read_sysfs(void)
+{
+    throw uhd::assertion_error("e300_read_sysfs() !E300_NATIVE");
+}
+
+std::string e300_get_sysfs_attr(const std::string &, const std::string &)
+{
+    throw uhd::assertion_error("e300_sysfs_attr() !E300_NATIVE");
+}
+
+#endif //E300_NATIVE