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https://github.com/projectacrn/acrn-hypervisor.git
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e4429d632b
This patch is to change the vUART resource occupied by S5 function between Service VM and guest VM to avoid the standard UART port conflict when legacy UART passthrough to guest VM. Tracked-On: #8622 Signed-off-by: YuanXin-Intel <xin.yuan@intel.com> Reviewed-by: Junjie Mao <junjie.mao@intel.com> Reviewed-by: Jian Jun Chen <jian.jun.chen@intel.com>
93 lines
3.9 KiB
Python
93 lines
3.9 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (C) 2022 Intel Corporation.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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import sys
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import acrn_config_utilities, lib.error
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from acrn_config_utilities import get_node
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from collections import defaultdict
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# The COM1 was used for console vUART, so we alloc io_port frome COM2~COM4
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val = lambda:list(range(0x9000, 0x9100, 8))
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vm_port_list = defaultdict(val)
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def create_s5_vuart_connection(allocation_etree, service_vm_name, service_vm_port, user_vm_name, user_vm_port):
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vuart_connections_node = get_node(f"/acrn-config/hv/vuart_connections", allocation_etree)
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if vuart_connections_node is None:
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vuart_connections_node = acrn_config_utilities.append_node("/acrn-config/hv/vuart_connections", None, allocation_etree)
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connection_name = service_vm_name + "_" + user_vm_name
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vuart_connection_node = acrn_config_utilities.append_node(f"./vuart_connection", None, vuart_connections_node)
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acrn_config_utilities.append_node(f"./name", connection_name, vuart_connection_node)
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acrn_config_utilities.append_node(f"./type", "legacy", vuart_connection_node)
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service_vm_endpoint = acrn_config_utilities.append_node(f"./endpoint", None, vuart_connection_node)
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acrn_config_utilities.append_node(f"./vm_name", service_vm_name, service_vm_endpoint)
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acrn_config_utilities.append_node(f"./io_port", service_vm_port, service_vm_endpoint)
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user_vm_endpoint = acrn_config_utilities.append_node(f"./endpoint", None, vuart_connection_node)
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acrn_config_utilities.append_node(f"./vm_name", user_vm_name, user_vm_endpoint)
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acrn_config_utilities.append_node(f"./io_port", user_vm_port, user_vm_endpoint)
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def get_console_vuart_port(scenario_etree, vm_name):
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port = get_node(f"//vm[name = '{vm_name}']/console_vuart/text()", scenario_etree)
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if port == "COM Port 1":
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port = "0x3F8U"
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elif port == "COM Port 2":
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port = "0x2F8U"
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elif port == "COM Port 3":
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port = "0x3E8U"
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elif port == "COM Port 4":
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port = "0x2E8U"
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else:
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port = "0x0U"
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return port
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def alloc_free_port(scenario_etree, load_order, vm_name):
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port_list = scenario_etree.xpath(f"//endpoint[vm_name = '{vm_name}']/io_port/text()")
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if load_order == "SERVICE_VM":
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vm_id = int(get_node(f"//vm[load_order = 'SERVICE_VM']/@id", scenario_etree))
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else:
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vm_id = int(get_node(f"//vm[name = '{vm_name}']/@id", scenario_etree))
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console_port = get_console_vuart_port(scenario_etree, vm_name)
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if console_port is not None:
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port_list.append(console_port.replace("U", ""))
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tmp_list = []
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for port in port_list:
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tmp_list.append(int(port, 16))
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global vm_port_list
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vm_port_list[vm_id] = list(set(vm_port_list[vm_id]) - set(tmp_list))
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vm_port_list[vm_id].sort()
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port = hex(vm_port_list[vm_id][0])
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vm_port_list[vm_id].remove(vm_port_list[vm_id][0])
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return str(port).upper()
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def alloc_vuart_connection_info(board_etree, scenario_etree, allocation_etree):
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user_vm_list = scenario_etree.xpath(f"//vm[load_order != 'SERVICE_VM']")
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service_vm_id = get_node(f"//vm[load_order = 'SERVICE_VM']/@id", scenario_etree)
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service_vm_name = get_node(f"//vm[load_order = 'SERVICE_VM']/name/text()", scenario_etree)
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if (service_vm_id is None) or (service_vm_name is None):
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return
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for index,vm_node in enumerate(user_vm_list):
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vm_id = get_node("./@id", vm_node)
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load_order = get_node("./load_order/text()", vm_node)
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user_vm_name = get_node(f"./name/text()", vm_node)
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service_vm_port = alloc_free_port(scenario_etree, "SERVICE_VM", user_vm_name)
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user_vm_port = alloc_free_port(scenario_etree, load_order, user_vm_name)
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create_s5_vuart_connection(allocation_etree, service_vm_name, service_vm_port, user_vm_name, user_vm_port)
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def fn(board_etree, scenario_etree, allocation_etree):
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alloc_vuart_connection_info(board_etree, scenario_etree, allocation_etree)
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