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config-tools: add intx static allocator

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Create an intx.py which is a static allocator to allocate the irq
resources. The available irq list is based on the native irqs which
are in range [0, 15] and are not used by native os.

Tracked-On: #5980
Signed-off-by: Yang,Yu-chu <yu-chu.yang@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
This commit is contained in:
Yang,Yu-chu 2021-04-13 22:04:39 -07:00 committed by wenlingz
parent 9c85d70057
commit 26a2aed19d
1 changed files with 71 additions and 0 deletions
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71
misc/config_tools/static_allocators/intx.py Normal file
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#!/usr/bin/env python3
#
# Copyright (C) 2021 Intel Corporation. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
import sys, os
sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'library'))
import common, board_cfg_lib, lib.error, lib.lib
LEGACY_IRQ_MAX = 16
def get_native_valid_irq():
"""
This is get available irq from board info file
:return: native available irq list
"""
val_irq = []
irq_info_lines = board_cfg_lib.get_info(common.BOARD_INFO_FILE, "<AVAILABLE_IRQ_INFO>", "</AVAILABLE_IRQ_INFO>")
for irq_string in irq_info_lines:
val_irq = [int(x.strip()) for x in irq_string.split(',')]
return val_irq
def alloc_irq(irq_list):
try:
irq = irq_list[0]
remove_irq(irq_list, irq)
return irq
except IndexError as e:
raise lib.error.ResourceError("Cannot allocate legacy irq, the available legacy irq list: {}, {}".format(e, irq_list)) from e
def remove_irq(irq_list, irq):
try:
irq_list.remove(irq)
except ValueError as e:
raise ValueError("Cannot remove irq:{} from available legacy irq list:{}, {}". format(irq, e, irq_list)) from e
def create_vuart_irq_node(etree, vm_id, vuart_id, irq):
allocation_sos_vm_node = common.get_node(f"/acrn-config/vm[@id = '{vm_id}']", etree)
if allocation_sos_vm_node is None:
allocation_sos_vm_node = common.append_node("/acrn-config/vm", None, etree, id = vm_id)
if common.get_node("./vm_type", allocation_sos_vm_node) is None:
common.append_node("./vm_type", "SOS_VM", allocation_sos_vm_node)
if common.get_node(f"./legacy_vuart[@id = '{vuart_id}']", allocation_sos_vm_node) is None:
common.append_node("./legacy_vuart", None, allocation_sos_vm_node, id = vuart_id)
common.append_node(f"./legacy_vuart[@id = '{vuart_id}']/irq", irq, allocation_sos_vm_node)
def fn(board_etree, scenario_etree, allocation_etree):
irq_list = get_native_valid_irq()
hv_debug_console = lib.lib.parse_hv_console(scenario_etree)
native_ttys = lib.lib.get_native_ttys()
vuart_valid = ['ttyS0', 'ttyS1', 'ttyS2', 'ttyS3']
scenario_sos_vm_node = common.get_node("//vm[vm_type = 'SOS_VM']", scenario_etree)
if scenario_sos_vm_node is not None:
vm_id = common.get_node("./@id", scenario_sos_vm_node)
if common.get_node("./legacy_vuart[@id = '0']/base/text()", scenario_sos_vm_node) != "INVALID_COM_BASE":
vuart0_irq = -1
if hv_debug_console in vuart_valid and hv_debug_console in native_ttys.keys() and native_ttys[hv_debug_console]['irq'] < LEGACY_IRQ_MAX:
vuart0_irq = native_ttys[hv_debug_console]['irq']
else:
vuart0_irq = alloc_irq(irq_list)
create_vuart_irq_node(allocation_etree, vm_id, "0", vuart0_irq)
if common.get_node("./legacy_vuart[@id = '1']/base/text()", scenario_sos_vm_node) != "INVALID_COM_BASE":
vuart1_irq = alloc_irq(irq_list)
create_vuart_irq_node(allocation_etree, vm_id, "1", vuart1_irq)