Author: bwidawsk Date: Wed Jul 11 01:37:01 2018 New Revision: 336185 URL: https://svnweb.freebsd.org/changeset/base/336185
Log: acpidump(8): Add ACPI LPIT (Low Power Idle Table) The LPIT is the part of the "standardized" way that one can enumerate various power state information on Intel platforms. The documentation for this change can be found here: http://www.uefi.org/sites/default/files/resources/Intel_ACPI_Low_Power_S0_Idle.pdf Reviewed By: jhb Approved By: jhb Differential Revision: https://reviews.freebsd.org/D15931 Modified: head/usr.sbin/acpi/acpidump/acpi.c head/usr.sbin/acpi/acpidump/acpidump.8 Modified: head/usr.sbin/acpi/acpidump/acpi.c ============================================================================== --- head/usr.sbin/acpi/acpidump/acpi.c Tue Jul 10 23:30:19 2018 (r336184) +++ head/usr.sbin/acpi/acpidump/acpi.c Wed Jul 11 01:37:01 2018 (r336185) @@ -68,6 +68,7 @@ static void acpi_handle_hpet(ACPI_TABLE_HEADER *sdp); static void acpi_handle_mcfg(ACPI_TABLE_HEADER *sdp); static void acpi_handle_slit(ACPI_TABLE_HEADER *sdp); static void acpi_handle_wddt(ACPI_TABLE_HEADER *sdp); +static void acpi_handle_lpit(ACPI_TABLE_HEADER *sdp); static void acpi_print_srat_cpu(uint32_t apic_id, uint32_t proximity_domain, uint32_t flags); static void acpi_print_srat_memory(ACPI_SRAT_MEM_AFFINITY *mp); @@ -716,6 +717,79 @@ acpi_handle_wddt(ACPI_TABLE_HEADER *sdp) } static void +acpi_print_native_lpit(ACPI_LPIT_NATIVE *nl) +{ + printf("\tEntryTrigger="); + acpi_print_gas(&nl->EntryTrigger); + printf("\tResidency=%u\n", nl->Residency); + printf("\tLatency=%u\n", nl->Latency); + if (nl->Header.Flags & ACPI_LPIT_NO_COUNTER) + printf("\tResidencyCounter=Not Present"); + else { + printf("\tResidencyCounter="); + acpi_print_gas(&nl->ResidencyCounter); + } + if (nl->CounterFrequency) + printf("\tCounterFrequency=%ju\n", nl->CounterFrequency); + else + printf("\tCounterFrequency=TSC\n"); +} + +static void +acpi_print_lpit(ACPI_LPIT_HEADER *lpit) +{ + if (lpit->Type == ACPI_LPIT_TYPE_NATIVE_CSTATE) + printf("\tType=ACPI_LPIT_TYPE_NATIVE_CSTATE\n"); + else + warnx("unknown LPIT type %u", lpit->Type); + + printf("\tLength=%u\n", lpit->Length); + printf("\tUniqueId=0x%04x\n", lpit->UniqueId); +#define PRINTFLAG(var, flag) printflag((var), ACPI_LPIT_## flag, #flag) + printf("\tFlags="); + PRINTFLAG(lpit->Flags, STATE_DISABLED); + PRINTFLAG_END(); +#undef PRINTFLAG + + if (lpit->Type == ACPI_LPIT_TYPE_NATIVE_CSTATE) + return acpi_print_native_lpit((ACPI_LPIT_NATIVE *)lpit); +} + +static void +acpi_walk_lpit(ACPI_TABLE_HEADER *table, void *first, + void (*action)(ACPI_LPIT_HEADER *)) +{ + ACPI_LPIT_HEADER *subtable; + char *end; + + subtable = first; + end = (char *)table + table->Length; + while ((char *)subtable < end) { + printf("\n"); + if (subtable->Length < sizeof(ACPI_LPIT_HEADER)) { + warnx("invalid subtable length %u", subtable->Length); + return; + } + action(subtable); + subtable = (ACPI_LPIT_HEADER *)((char *)subtable + + subtable->Length); + } +} + +static void +acpi_handle_lpit(ACPI_TABLE_HEADER *sdp) +{ + ACPI_TABLE_LPIT *lpit; + + printf(BEGIN_COMMENT); + acpi_print_sdt(sdp); + lpit = (ACPI_TABLE_LPIT *)sdp; + acpi_walk_lpit(sdp, (lpit + 1), acpi_print_lpit); + + printf(END_COMMENT); +} + +static void acpi_print_srat_cpu(uint32_t apic_id, uint32_t proximity_domain, uint32_t flags) { @@ -1693,6 +1767,8 @@ acpi_handle_rsdt(ACPI_TABLE_HEADER *rsdp) acpi_handle_nfit(sdp); else if (!memcmp(sdp->Signature, ACPI_SIG_WDDT, 4)) acpi_handle_wddt(sdp); + else if (!memcmp(sdp->Signature, ACPI_SIG_LPIT, 4)) + acpi_handle_lpit(sdp); else { printf(BEGIN_COMMENT); acpi_print_sdt(sdp); Modified: head/usr.sbin/acpi/acpidump/acpidump.8 ============================================================================== --- head/usr.sbin/acpi/acpidump/acpidump.8 Tue Jul 10 23:30:19 2018 (r336184) +++ head/usr.sbin/acpi/acpidump/acpidump.8 Wed Jul 11 01:37:01 2018 (r336185) @@ -29,7 +29,7 @@ .\" .\" $FreeBSD$ .\" -.Dd June 20, 2018 +.Dd July 10, 2018 .Dt ACPIDUMP 8 .Os .Sh NAME @@ -103,6 +103,7 @@ utility dumps contents of the following tables: .It FACS .It FADT .It HPET +.It LPIT .It MADT .It MCFG .It NFIT _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
