diff options
| author | Ashok Raj <ashok.raj@intel.com> | 2005-03-31 22:51:10 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-07-12 00:01:41 -0400 |
| commit | 55e59c511cea3c6c721971467c707e9955922bc2 (patch) | |
| tree | 1dc3b66be2e71881167b7ba9259b291484567b01 /arch/ia64/kernel/acpi.c | |
| parent | 6940fabaa35b893163b7043d0d1dc5d715f9e1ca (diff) | |
| download | linux-55e59c511cea3c6c721971467c707e9955922bc2.tar.bz2 | |
[ACPI] Evaluate CPEI Processor Override flag
ACPI 3.0 added a Correctable Platform Error Interrupt (CPEI)
Processor Overide flag to MADT.Platform_Interrupt_Source.
Record the processor that was provided as hint from ACPI.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/ia64/kernel/acpi.c')
| -rw-r--r-- | arch/ia64/kernel/acpi.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index 72dfd9e7de0f..1c118b72df3c 100644 --- a/arch/ia64/kernel/acpi.c +++ b/arch/ia64/kernel/acpi.c @@ -11,6 +11,7 @@ * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com> * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com> * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de> + * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com> * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * @@ -67,6 +68,11 @@ EXPORT_SYMBOL(pm_power_off); unsigned char acpi_kbd_controller_present = 1; unsigned char acpi_legacy_devices; +static unsigned int __initdata acpi_madt_rev; + +unsigned int acpi_cpei_override; +unsigned int acpi_cpei_phys_cpuid; + #define MAX_SAPICS 256 u16 ia64_acpiid_to_sapicid[MAX_SAPICS] = { [0 ... MAX_SAPICS - 1] = -1 }; @@ -267,10 +273,56 @@ acpi_parse_plat_int_src ( (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); platform_intr_list[plintsrc->type] = vector; + if (acpi_madt_rev > 1) { + acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag; + } + + /* + * Save the physical id, so we can check when its being removed + */ + acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; + return 0; } +unsigned int can_cpei_retarget(void) +{ + extern int cpe_vector; + + /* + * Only if CPEI is supported and the override flag + * is present, otherwise return that its re-targettable + * if we are in polling mode. + */ + if (cpe_vector > 0 && !acpi_cpei_override) + return 0; + else + return 1; +} + +unsigned int is_cpu_cpei_target(unsigned int cpu) +{ + unsigned int logical_id; + + logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); + + if (logical_id == cpu) + return 1; + else + return 0; +} + +void set_cpei_target_cpu(unsigned int cpu) +{ + acpi_cpei_phys_cpuid = cpu_physical_id(cpu); +} + +unsigned int get_cpei_target_cpu(void) +{ + return acpi_cpei_phys_cpuid; +} + static int __init acpi_parse_int_src_ovr ( acpi_table_entry_header *header, const unsigned long end) @@ -328,6 +380,8 @@ acpi_parse_madt (unsigned long phys_addr, unsigned long size) acpi_madt = (struct acpi_table_madt *) __va(phys_addr); + acpi_madt_rev = acpi_madt->header.revision; + /* remember the value for reference after free_initmem() */ #ifdef CONFIG_ITANIUM has_8259 = 1; /* Firmware on old Itanium systems is broken */ |