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"""Tests for ACPI""" import acpi import bits import bits.mwait import struct import testutil import testsuite import time def register_tests(): testsuite.add_test("ACPI _MAT (Multiple APIC Table Entry) under Processor objects", test_mat, submenu="ACPI Tests") # testsuite.add_test("ACPI _PSS (Pstate) table conformance tests", test_pss, submenu="ACPI Tests") # testsuite.add_test("ACPI _PSS (Pstate) runtime tests", test_pstates, submenu="ACPI Tests") testsuite.add_test("ACPI DSDT (Differentiated System Description Table)", test_dsdt, submenu="ACPI Tests") testsuite.add_test("ACPI FACP (Fixed ACPI Description Table)", test_facp, submenu="ACPI Tests") testsuite.add_test("ACPI HPET (High Precision Event Timer Table)", test_hpet, submenu="ACPI Tests") testsuite.add_test("ACPI MADT (Multiple APIC Description Table)", test_apic, submenu="ACPI Tests") testsuite.add_test("ACPI MPST (Memory Power State Table)", test_mpst, submenu="ACPI Tests") testsuite.add_test("ACPI RSDP (Root System Description Pointer Structure)", test_rsdp, submenu="ACPI Tests") testsuite.add_test("ACPI XSDT (Extended System Description Table)", test_xsdt, submenu="ACPI Tests") def test_mat(): cpupaths = acpi.get_cpupaths() apic = acpi.parse_apic() procid_apicid = apic.procid_apicid uid_x2apicid = apic.uid_x2apicid for cpupath in cpupaths: # Find the ProcId defined by the processor object processor = acpi.evaluate(cpupath) # Find the UID defined by the processor object's _UID method uid = acpi.evaluate(cpupath + "._UID") mat_buffer = acpi.evaluate(cpupath + "._MAT") if mat_buffer is None: continue # Process each _MAT subtable mat = acpi._MAT(mat_buffer) for index, subtable in enumerate(mat): if subtable.subtype == acpi.MADT_TYPE_LOCAL_APIC: if subtable.flags.bits.enabled: testsuite.test("{} Processor declaration ProcId = _MAT ProcId".format(cpupath), processor.ProcId == subtable.proc_id) testsuite.print_detail("{} ProcId ({:#02x}) != _MAT ProcId ({:#02x})".format(cpupath, processor.ProcId, subtable.proc_id)) testsuite.print_detail("Processor Declaration: {}".format(processor)) testsuite.print_detail("_MAT entry[{}]: {}".format(index, subtable)) if testsuite.test("{} with local APIC in _MAT has local APIC in MADT".format(cpupath), processor.ProcId in procid_apicid): testsuite.test("{} ApicId derived using Processor declaration ProcId = _MAT ApicId".format(cpupath), procid_apicid[processor.ProcId] == subtable.apic_id) testsuite.print_detail("{} ApicId derived from MADT ({:#02x}) != _MAT ApicId ({:#02x})".format(cpupath, procid_apicid[processor.ProcId], subtable.apic_id)) testsuite.print_detail("Processor Declaration: {}".format(processor)) testsuite.print_detail("_MAT entry[{}]: {}".format(index, subtable)) if subtable.subtype == acpi.MADT_TYPE_LOCAL_X2APIC: if subtable.flags.bits.enabled: if testsuite.test("{} with x2Apic in _MAT has _UID".format(cpupath), uid is not None): testsuite.test("{}._UID = _MAT UID".format(cpupath), uid == subtable.uid) testsuite.print_detail("{}._UID ({:#x}) != _MAT UID ({:#x})".format(cpupath, uid, subtable.uid)) testsuite.print_detail("_MAT entry[{}]: {}".format(index, subtable)) if testsuite.test("{} with _MAT x2Apic has x2Apic in MADT".format(cpupath), subtable.uid in uid_x2apicid): testsuite.test("{} x2ApicId derived from MADT using UID = _MAT x2ApicId".format(cpupath), uid_x2apicid[subtable.uid] == subtable.x2apicid) testsuite.print_detail("{} x2ApicId derived from MADT ({:#02x}) != _MAT x2ApicId ({:#02x})".format(cpupath, uid_x2apicid[subtable.uid], subtable.x2apicid)) testsuite.print_detail("_MAT entry[{}]: {}".format(index, subtable)) def test_pss(): uniques = acpi.parse_cpu_method("_PSS") # We special-case None here to avoid a double-failure for CPUs without a _PSS testsuite.test("_PSS must be identical for all CPUs", len(uniques) <= 1 or (len(uniques) == 2 and None in uniques)) for pss, cpupaths in uniques.iteritems(): if not testsuite.test("_PSS must exist", pss is not None): testsuite.print_detail(acpi.factor_commonprefix(cpupaths)) testsuite.print_detail('No _PSS exists') continue if not testsuite.test("_PSS must not be empty", pss.pstates): testsuite.print_detail(acpi.factor_commonprefix(cpupaths)) testsuite.print_detail('_PSS is empty') continue testsuite.print_detail(acpi.factor_commonprefix(cpupaths)) for index, pstate in enumerate(pss.pstates): testsuite.print_detail("P[{}]: {}".format(index, pstate)) testsuite.test("_PSS must contain at most 16 Pstates", len(pss.pstates) <= 16) testsuite.test("_PSS must have no duplicate Pstates", len(pss.pstates) == len(set(pss.pstates))) frequencies = [p.core_frequency for p in pss.pstates] testsuite.test("_PSS must list Pstates in descending order of frequency", frequencies == sorted(frequencies, reverse=True)) testsuite.test("_PSS must have Pstates with no duplicate frequencies", len(frequencies) == len(set(frequencies))) dissipations = [p.power for p in pss.pstates] testsuite.test("_PSS must list Pstates in descending order of power dissipation", dissipations == sorted(dissipations, reverse=True)) def test_pstates(): """Execute and verify frequency for each Pstate in the _PSS""" IA32_PERF_CTL = 0x199 with bits.mwait.use_hint(), bits.preserve_msr(IA32_PERF_CTL): cpupath_procid = acpi.find_procid() cpupath_uid = acpi.find_uid() apic = acpi.parse_apic() procid_apicid = apic.procid_apicid uid_x2apicid = apic.uid_x2apicid def cpupath_apicid(cpupath): if procid_apicid is not None: procid = cpupath_procid.get(cpupath, None) if procid is not None: apicid = procid_apicid.get(procid, None) if apicid is not None: return apicid if uid_x2apicid is not None: uid = cpupath_uid.get(cpupath, None) if uid is not None: apicid = uid_x2apicid.get(uid, None) if apicid is not None: return apicid return bits.cpus()[0] bclk = testutil.adjust_to_nearest(bits.bclk(), 100.0/12) * 1000000 uniques = acpi.parse_cpu_method("_PSS") for pss, cpupaths in uniques.iteritems(): if not testsuite.test("_PSS must exist", pss is not None): testsuite.print_detail(acpi.factor_commonprefix(cpupaths)) testsuite.print_detail('No _PSS exists') continue for n, pstate in enumerate(pss.pstates): for cpupath in cpupaths: apicid = cpupath_apicid(cpupath) if apicid is None: print 'Failed to find apicid for cpupath {}'.format(cpupath) continue bits.wrmsr(apicid, IA32_PERF_CTL, pstate.control) # Detecting Turbo frequency requires at least 2 pstates # since turbo frequency = max non-turbo frequency + 1 turbo = False if len(pss.pstates) >= 2: turbo = (n == 0 and pstate.core_frequency == (pss.pstates[1].core_frequency + 1)) if turbo: # Needs to busywait, not sleep start = time.time() while (time.time() - start < 2): pass for duration in (0.1, 1.0): frequency_data = bits.cpu_frequency(duration) # Abort the test if no cpu frequency is not available if frequency_data is None: continue aperf = frequency_data[1] aperf = testutil.adjust_to_nearest(aperf, bclk/2) aperf = int(aperf / 1000000) if turbo: if aperf >= pstate.core_frequency: break else: if aperf == pstate.core_frequency: break if turbo: testsuite.test("P{}: Turbo measured frequency {} >= expected {} MHz".format(n, aperf, pstate.core_frequency), aperf >= pstate.core_frequency) else: testsuite.test("P{}: measured frequency {} MHz == expected {} MHz".format(n, aperf, pstate.core_frequency), aperf == pstate.core_frequency) def test_psd_thread_scope(): uniques = acpi.parse_cpu_method("_PSD") if not testsuite.test("_PSD (P-State Dependency) must exist for each processor", None not in uniques): testsuite.print_detail(acpi.factor_commonprefix(uniques[None])) testsuite.print_detail('No _PSD exists') return unique_num_dependencies = {} unique_num_entries = {} unique_revision = {} unique_domain = {} unique_coordination_type = {} unique_num_processors = {} for value, cpupaths in uniques.iteritems(): unique_num_dependencies.setdefault(len(value.dependencies), []).extend(cpupaths) unique_num_entries.setdefault(value.dependencies[0].num_entries, []).extend(cpupaths) unique_revision.setdefault(value.dependencies[0].revision, []).extend(cpupaths) unique_domain.setdefault(value.dependencies[0].domain, []).extend(cpupaths) unique_coordination_type.setdefault(value.dependencies[0].coordination_type, []).extend(cpupaths) unique_num_processors.setdefault(value.dependencies[0].num_processors, []).extend(cpupaths) def detail(d, fmt): for value, cpupaths in sorted(d.iteritems(), key=(lambda (k,v): v)): testsuite.print_detail(acpi.factor_commonprefix(cpupaths)) testsuite.print_detail(fmt.format(value)) testsuite.test('Dependency count for each processor must be 1', unique_num_dependencies.keys() == [1]) detail(unique_num_dependencies, 'Dependency count for each processor = {} (Expected 1)') testsuite.test('_PSD.num_entries must be 5', unique_num_entries.keys() == [5]) detail(unique_num_entries, 'num_entries = {} (Expected 5)') testsuite.test('_PSD.revision must be 0', unique_revision.keys() == [0]) detail(unique_revision, 'revision = {}') testsuite.test('_PSD.coordination_type must be 0xFE (HW_ALL)', unique_coordination_type.keys() == [0xfe]) detail(unique_coordination_type, 'coordination_type = {:#x} (Expected 0xFE HW_ALL)') testsuite.test('_PSD.domain must be unique (thread-scoped) for each processor', len(unique_domain) == len(acpi.get_cpupaths())) detail(unique_domain, 'domain = {:#x} (Expected a unique value for each processor)') testsuite.test('_PSD.num_processors must be 1', unique_num_processors.keys() == [1]) detail(unique_num_processors, 'num_processors = {} (Expected 1)') def test_table_checksum(data): csum = sum(ord(c) for c in data) % 0x100 testsuite.test('ACPI table cumulative checksum must equal 0', csum == 0) testsuite.print_detail("Cumulative checksum = {} (Expected 0)".format(csum)) def test_apic(): data = acpi.get_table("APIC") if data is None: return test_table_checksum(data) apic = acpi.parse_apic() def test_dsdt(): data = acpi.get_table("DSDT") if data is None: return test_table_checksum(data) def test_facp(): data = acpi.get_table("FACP") if data is None: return test_table_checksum(data) facp = acpi.parse_facp() def test_hpet(): data = acpi.get_table("HPET") if data is None: return test_table_checksum(data) hpet = acpi.parse_hpet() def test_mpst(): data = acpi.get_table("MPST") if data is None: return test_table_checksum(data) mpst = acpi.MPST(data) def test_rsdp(): data = acpi.get_table("RSD PTR ") if data is None: return # Checksum the first 20 bytes per ACPI 1.0 csum = sum(ord(c) for c in data[:20]) % 0x100 testsuite.test('ACPI 1.0 table first 20 bytes cummulative checksum must equal 0', csum == 0) testsuite.print_detail("Cummulative checksum = {} (Expected 0)".format(csum)) test_table_checksum(data) rsdp = acpi.parse_rsdp() def test_xsdt(): data = acpi.get_table("XSDT") if data is None: return test_table_checksum(data) xsdt = acpi.parse_xsdt()