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1c84d88b4a
This file allocates the resource of pio base.
The available pio base is in ['0x3F8', '0x2F8', '0x3E8', '0x2E8'] and it
cannot be used by native device.
When any of sos legacy vuarts are enabled, assign a pio base to legancy
vuarts' base.
The allocator follows rules:
1. An SOS legacy vuart only support PIO vuart.
2. To assign a pio base for sos legacy vuart 0:
- If the hv/DEBUG_OPTIONS/SERIAL_CONSOLE is one of
[ttys0, ttys1, ttys2, ttys3] and it's a pio vuart in the native
environment, the pio base of SOS legacy vuart 0 would be the same as
native one.
- If the hv/DEBUG_OPTIONS/SERIAL_CONSOLE is not one of
[ttys0, ttys1, ttys2, ttys3], assigns a pio base to SOS legacy vuart 0
from avilable pio base.
- If the hv/DEBUG_OPTIONS/SERIAL_CONSOLE is not one of
[ttys0, ttys1, ttys2, ttys3] but a pio vuart, will assigns a pio
base to SOS legacy vuart 0 from avilable pio base and raise a
warning to user.
3. To assign a pio base for sos legacy vuart 1:
- Assigns a pio base to SOS legacy vuart 1 from avilable pio base.
- If all the available pio bases list is empty (which means all are
in used by native), it assigns one of the pio base to SOS legacy
vuart 1 anyway, but raise a warning to user.
4. Assigned pio bases must be unique.
Tracked-On: #5980
Signed-off-by: Yang,Yu-chu <yu-chu.yang@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
75 lines
3.5 KiB
Python
75 lines
3.5 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (C) 2021 Intel Corporation. All rights reserved.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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import sys, os
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sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'library'))
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import common, lib.lib
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VALID_PIO = ['0x3F8', '0x2F8', '0x3E8', '0x2E8']
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def alloc_pio(pio_list):
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try:
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base = pio_list[0]
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remove_pio(pio_list, base)
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return base
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except IndexError as e:
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raise lib.error.ResourceError("Cannot allocate a pio base, the available pio base list:{}, {}".format(e, pio_list))
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def remove_pio(pio_list, base):
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try:
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pio_list.remove(base)
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except ValueError as e:
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raise ValueError("Cannot remove a pio base:{} from the available pio base list:{}, {}". format(base, e, pio_list)) from e
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def create_vuart_base_node(etree, vm_id, vuart_id, vuart_base):
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allocation_sos_vm_node = common.get_node(f"/acrn-config/vm[@id = '{vm_id}']", etree)
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if allocation_sos_vm_node is None:
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allocation_sos_vm_node = common.append_node("/acrn-config/vm", None, etree, id = vm_id)
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if common.get_node("./vm_type", allocation_sos_vm_node) is None:
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common.append_node("./vm_type", "SOS_VM", allocation_sos_vm_node)
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if common.get_node(f"./legacy_vuart[@id = '{vuart_id}']", allocation_sos_vm_node) is None:
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common.append_node("./legacy_vuart", None, allocation_sos_vm_node, id = vuart_id)
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common.append_node(f"./legacy_vuart[@id = '{vuart_id}']/base", vuart_base, allocation_sos_vm_node)
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def fn(board_etree, scenario_etree, allocation_etree):
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native_ttys = lib.lib.get_native_ttys()
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pio_list = [base for base in VALID_PIO if all(native_ttys[tty]['base'] != base for tty in native_ttys.keys())]
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# This pio_list is workaround. Since there are whl-ipc-i7 and whl-ipc-i5 which occupy all valid pio ports.
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# It would fail to allocate pio base for enabled sos legacy vuart1. In that case, we allow vuart1 take one pio
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# base which is used in native.
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full = False
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if len(pio_list) == 0:
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full = True
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pio_list = VALID_PIO
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vuart_valid = ['ttyS0', 'ttyS1', 'ttyS2', 'ttyS3']
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hv_debug_console = lib.lib.parse_hv_console(scenario_etree)
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scenario_sos_vm_node = common.get_node("//vm[vm_type = 'SOS_VM']", scenario_etree)
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if scenario_sos_vm_node is not None:
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vm_id = common.get_node("./@id", scenario_sos_vm_node)
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if common.get_node("./legacy_vuart[@id = '0']/base/text()", scenario_sos_vm_node) != "INVALID_COM_BASE":
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vuart0_base = ""
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if hv_debug_console in vuart_valid and hv_debug_console in native_ttys.keys() and native_ttys[hv_debug_console]['type'] == "portio":
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vuart0_base = native_ttys[hv_debug_console]['base']
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if vuart0_base in pio_list:
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remove_pio(pio_list, vuart0_base)
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else:
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vuart0_base = alloc_pio(pio_list)
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if full:
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common.print_yel("All available pio bases are used by native fully. '{}' is taken by sos legacy vuart 0.".format(vuart0_base), warn=True)
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create_vuart_base_node(allocation_etree, str(vm_id), "0", vuart0_base)
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if common.get_node("./legacy_vuart[@id = '1']/base/text()", scenario_sos_vm_node) != "INVALID_COM_BASE":
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vuart1_base = alloc_pio(pio_list)
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if full:
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common.print_yel("All available pio bases are used by native fully. '{}' is taken by sos legacy vuart 1.".format(vuart1_base), warn=True)
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create_vuart_base_node(allocation_etree, str(vm_id), "1", vuart1_base)
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