5356244e53
- Why I did it Add NVIDIA Copyright header to "mellanox" files - How I did it Add NVIDIA Copyright header as a comment for Mellanox files - How to verify it Sanity tests and PR checkers.
84 lines
3.4 KiB
Python
84 lines
3.4 KiB
Python
#
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# Copyright (c) 2021 NVIDIA CORPORATION & AFFILIATES.
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# Apache-2.0
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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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#
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########################################################################
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#
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# Module contains a platform specific implementation of SONiC Platform
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# Base PCIe class
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#
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########################################################################
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import os
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import re
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try:
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from sonic_platform_base.sonic_pcie.pcie_common import PcieUtil
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except ImportError as e:
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raise ImportError(str(e) + "- required module not found")
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SYSFS_PCI_DEVICE_PATH = '/sys/bus/pci/devices/'
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class Pcie(PcieUtil):
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# check the current PCIe device with config file and return the result
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# use bus from _device_id_to_bus_map instead of from yaml file
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def get_pcie_check(self):
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self.load_config_file()
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for item_conf in self.confInfo:
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id_conf = item_conf["id"]
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dev_conf = item_conf["dev"]
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fn_conf = item_conf["fn"]
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bus_conf = self._device_id_to_bus_map.get(str(id_conf))
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if bus_conf and self.check_pcie_sysfs(bus=int(bus_conf, base=16), device=int(dev_conf, base=16),
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func=int(fn_conf, base=16)):
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item_conf["result"] = "Passed"
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else:
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item_conf["result"] = "Failed"
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return self.confInfo
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# Create
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def _create_device_id_to_bus_map(self):
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self._device_id_to_bus_map = {}
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self.load_config_file()
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device_folders = os.listdir(SYSFS_PCI_DEVICE_PATH)
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for folder in device_folders:
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# For each folder in the sysfs tree we check if it matches the normal PCIe device folder pattern,
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# If match we add the device id from the device file and the bus from the folder name to the map
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#
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# Example for device folder name: 0000:ff:0b.1
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#
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# The folder name is built from:
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# 4 hex digit of domain
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# colon ':'
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# 2 hex digit of bus - this is what we are looking for
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# colon ':'
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# 2 hex digit of id
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# dot '.'
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# 1 digit of fn
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pattern_for_device_folder = re.search('....:(..):..\..', folder)
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if pattern_for_device_folder:
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bus = pattern_for_device_folder.group(1)
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with open(os.path.join('/sys/bus/pci/devices', folder, 'device'), 'r') as device_file:
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# The 'device' file contain an hex repesantaion of the id key in the yaml file.
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# Example of the file contact:
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# 0x6fe2
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# We will strip the new line character, and remove the 0x prefix that is not needed.
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device_id = device_file.read().strip().replace('0x', '')
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self._device_id_to_bus_map[device_id] = bus
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def __init__(self, platform_path):
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PcieUtil.__init__(self, platform_path)
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self._create_device_id_to_bus_map()
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