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vUART: change vUART connection allocated IRQ

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Both Service VM and post launched VM should allocate native valid IRQ
to vuart connection to avoid IRQ conflict between virtual device and
passthrough ACPI device.

Tracked-On: #8635
Signed-off-by: Yichong Tang <yichong.tang@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
This commit is contained in:
yichongt 2024-07-17 19:13:03 +08:00 committed by wenlingz
parent b37f9c054b
commit d61405e34c
1 changed files with 14 additions and 9 deletions
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23
misc/config_tools/static_allocators/intx.py
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@ -67,16 +67,21 @@ def alloc_vuart_connection_irqs(board_etree, scenario_etree, allocation_etree):
for vm_node in vm_node_list:
load_order = get_node("./load_order/text()", vm_node)
irq_list = get_native_valid_irq() if load_order == "SERVICE_VM" else [f"{d}" for d in list(range(5,15))]
"""
For both Service VM and post-launched VM, IRQs allocated to vuart connection
should avoid IRQ of existing physical device as it may conflict with legacy
INTX of ptdev.
"""
irq_list = get_native_valid_irq()
if load_order == "SERVICE_VM":
if 3 in irq_list:
remove_irq(irq_list, 3)
if 4 in irq_list:
remove_irq(irq_list, 4)
else:
if 14 in irq_list:
remove_irq(irq_list, 14)
"""
Remove IRQ 3 and 4 from valid irq list as it is allocated to vuart with
standard COM port.
"""
if 3 in irq_list:
remove_irq(irq_list, 3)
if 4 in irq_list:
remove_irq(irq_list, 4)
vuart_id = 1
legacy_vuart_irq = "0"
vmname = get_node("./name/text()", vm_node)