ipmi: Add host IPMI interface & debug implementation
The host IPMI interface is just a pair of send/receive calls, providing
seq, netfn, cmd and a data byte array (dbus type "yyyay").
This change adds a fake host IPMI module to implement this interface.
Bytes are read from stdin (as space-separated hex values), and sent as a
ReceivedMessage signal. We also print any messages we see as calls to
sendMessage.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
diff --git a/bin/ipmi_debug.py b/bin/ipmi_debug.py
new file mode 100644
index 0000000..43dbcbd
--- /dev/null
+++ b/bin/ipmi_debug.py
@@ -0,0 +1,83 @@
+#!/usr/bin/env python
+
+import sys
+import subprocess
+import dbus
+import string
+import os
+import fcntl
+import glib
+import gobject
+import dbus.service
+import dbus.mainloop.glib
+
+DBUS_NAME = 'org.openbmc.HostIpmi'
+OBJ_NAME = '/org/openbmc/HostIpmi/1'
+
+def print_packet(seq, netfn, cmd, data):
+ print 'seq: 0x%02x\nnetfn: 0x%02x\ncmd: 0x%02x\ndata: [%s]' % (
+ seq, netfn, cmd,
+ ", ".join(['0x%02x' % x for x in data]))
+
+
+class IpmiDebug(dbus.service.Object):
+ def __init__(self,bus,name):
+ dbus.service.Object.__init__(self,bus,name)
+
+ @dbus.service.signal(DBUS_NAME, "yyyay")
+ def ReceivedMessage(self, seq, netfn, cmd, data):
+ print "IPMI packet from host:"
+ print_packet(seq, netfn, cmd, data)
+
+ @dbus.service.method(DBUS_NAME, "yyyay", "x")
+ def sendMessage(self, seq, netfn, cmd, data):
+ print "IPMI packet sent to host:"
+ print_packet(seq, netfn, cmd, data)
+ return 0
+
+class ConsoleReader(object):
+ def __init__(self, ipmi_obj):
+ self.buffer = ''
+ self.seq = 0
+ self.ipmi_obj = ipmi_obj
+ flags = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL)
+ flags |= os.O_NONBLOCK
+ fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, flags)
+ glib.io_add_watch(sys.stdin, glib.IO_IN, self.io_callback)
+
+ def io_callback(self, fd, condition):
+ chunk = fd.read()
+ for char in chunk:
+ self.buffer += char
+ if char == '\n':
+ self.line(self.buffer)
+ self.buffer = ''
+
+ return True
+
+ def line(self, data):
+ s = data.split(' ')
+ if len(s) < 2:
+ print "Not enough bytes to form a valid IPMI packet"
+ return
+ try:
+ data = [int(c, 16) for c in s]
+ except ValueError:
+ return
+ self.seq += 1
+ self.ipmi_obj.ReceivedMessage(self.seq, data[0], data[1], data[2:])
+
+def main():
+ dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
+ bus = dbus.SessionBus()
+ name = dbus.service.BusName(DBUS_NAME, bus)
+ obj = IpmiDebug(bus, OBJ_NAME)
+ mainloop = gobject.MainLoop()
+ r = ConsoleReader(obj)
+
+ print ("Enter IPMI packet as hex values. First two bytes will be used"
+ "as netfn and cmd")
+ mainloop.run()
+
+if __name__ == '__main__':
+ sys.exit(main())