mirror of
https://opendev.org/x/pyghmi
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0f397ac0d9
Some sensors may have non-zero LUN. Support this behavior. Change-Id: Ibad7a1c378ef0ef5955fa81e3f110db0e8c42e90
143 lines
4.7 KiB
Python
143 lines
4.7 KiB
Python
# Copyright 2017 Lenovo
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import ctypes
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import fcntl
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from select import select
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import time
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import pyghmi.ipmi.private.util as iutil
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class IpmiMsg(ctypes.Structure):
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_fields_ = [('netfn', ctypes.c_ubyte),
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('cmd', ctypes.c_ubyte),
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('data_len', ctypes.c_short),
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('data', ctypes.POINTER(ctypes.c_ubyte))]
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class IpmiSystemInterfaceAddr(ctypes.Structure):
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_fields_ = [('addr_type', ctypes.c_int),
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('channel', ctypes.c_short),
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('lun', ctypes.c_ubyte)]
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class IpmiRecv(ctypes.Structure):
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_fields_ = [('recv_type', ctypes.c_int),
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('addr', ctypes.POINTER(IpmiSystemInterfaceAddr)),
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('addr_len', ctypes.c_uint),
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('msgid', ctypes.c_long),
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('msg', IpmiMsg)]
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class IpmiReq(ctypes.Structure):
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_fields_ = [('addr', ctypes.POINTER(IpmiSystemInterfaceAddr)),
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('addr_len', ctypes.c_uint),
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('msgid', ctypes.c_long),
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('msg', IpmiMsg)]
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_IONONE = 0
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_IOWRITE = 1
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_IOREAD = 2
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IPMICTL_SET_MY_ADDRESS_CMD = (_IOREAD << 30 |
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ctypes.sizeof(ctypes.c_uint) << 16 |
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ord('i') << 8 | 17) # from ipmi.h
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IPMICTL_SEND_COMMAND = (_IOREAD << 30 |
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ctypes.sizeof(IpmiReq) << 16 |
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ord('i') << 8 | 13) # from ipmi.h
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# next is really IPMICTL_RECEIVE_MSG_TRUNC, but will only use that
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IPMICTL_RECV = ((_IOWRITE | _IOREAD) << 30 |
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ctypes.sizeof(IpmiRecv) << 16 |
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ord('i') << 8 | 11) # from ipmi.h
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BMC_SLAVE_ADDR = ctypes.c_uint(0x20)
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CURRCHAN = 0xf
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ADDRTYPE = 0xc
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class Session(object):
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def __init__(self, devnode='/dev/ipmi0'):
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"""Create a local session inband
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:param: devnode: The path to the ipmi device
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"""
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self.ipmidev = open(devnode, 'r+')
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fcntl.ioctl(self.ipmidev, IPMICTL_SET_MY_ADDRESS_CMD, BMC_SLAVE_ADDR)
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# the interface is initted, create some reusable memory for our session
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self.databuffer = ctypes.create_string_buffer(4096)
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self.req = IpmiReq()
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self.rsp = IpmiRecv()
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self.addr = IpmiSystemInterfaceAddr()
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self.req.msg.data = ctypes.cast(
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ctypes.addressof(self.databuffer),
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ctypes.POINTER(ctypes.c_ubyte))
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self.rsp.msg.data = self.req.msg.data
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self.userid = None
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self.password = None
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def await_reply(self):
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rd, _, _ = select((self.ipmidev,), (), (), 1)
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while not rd:
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rd, _, _ = select((self.ipmidev,), (), (), 1)
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def pause(self, seconds):
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time.sleep(seconds)
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@property
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def parsed_rsp(self):
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response = {'netfn': self.rsp.msg.netfn, 'command': self.rsp.msg.cmd,
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'code': bytearray(self.databuffer.raw)[0],
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'data': bytearray(
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self.databuffer.raw[1:self.rsp.msg.data_len])}
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errorstr = iutil.get_ipmi_error(response)
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if errorstr:
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response['error'] = errorstr
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return response
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def raw_command(self,
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netfn,
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command,
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data=(),
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bridge_request=None,
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retry=True,
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delay_xmit=None,
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timeout=None,
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waitall=False, lun=0):
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self.addr.channel = CURRCHAN
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self.addr.addr_type = ADDRTYPE
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self.addr.lun = lun
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self.req.addr_len = ctypes.sizeof(IpmiSystemInterfaceAddr)
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self.req.addr = ctypes.pointer(self.addr)
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self.req.msg.netfn = netfn
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self.req.msg.cmd = command
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data = memoryview(bytearray(data))
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self.databuffer[:len(data)] = data[:len(data)]
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self.req.msg.data_len = len(data)
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fcntl.ioctl(self.ipmidev, IPMICTL_SEND_COMMAND, self.req)
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self.await_reply()
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self.rsp.msg.data_len = 4096
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self.rsp.addr = ctypes.pointer(self.addr)
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self.rsp.addr_len = ctypes.sizeof(IpmiSystemInterfaceAddr)
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fcntl.ioctl(self.ipmidev, IPMICTL_RECV, self.rsp)
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return self.parsed_rsp
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def main():
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a = Session('/dev/ipmi0')
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print(repr(a.raw_command(0, 1)))
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if __name__ == '__main__':
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main()
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