From 55e59c511cea3c6c721971467c707e9955922bc2 Mon Sep 17 00:00:00 2001
From: Ashok Raj <ashok.raj@intel.com>
Date: Thu, 31 Mar 2005 22:51:10 -0500
Subject: [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>
---
arch/ia64/kernel/acpi.c | 54 +++++++++++++++++++++++++++++++++++++++++++++
arch/ia64/kernel/mca.c | 2 +-
arch/ia64/kernel/topology.c | 7 ++++++
3 files changed, 62 insertions(+), 1 deletion(-)
(limited to 'arch/ia64/kernel')
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 72dfd9e7de0..1c118b72df3 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 */
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 736e328b5e6..4ebbf397438 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -271,7 +271,7 @@ ia64_mca_log_sal_error_record(int sal_info_type)
#ifdef CONFIG_ACPI
-static int cpe_vector = -1;
+int cpe_vector = -1;
static irqreturn_t
ia64_mca_cpe_int_handler (int cpe_irq, void *arg, struct pt_regs *ptregs)
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index f1aafd4c05f..d8030f3bd86 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -36,6 +36,13 @@ int arch_register_cpu(int num)
parent = &sysfs_nodes[cpu_to_node(num)];
#endif /* CONFIG_NUMA */
+ /*
+ * If CPEI cannot be re-targetted, and this is
+ * CPEI target, then dont create the control file
+ */
+ if (!can_cpei_retarget() && is_cpu_cpei_target(num))
+ sysfs_cpus[num].cpu.no_control = 1;
+
return register_cpu(&sysfs_cpus[num].cpu, num, parent);
}
--
cgit v1.2.3-18-g5258
From 6c4fa56033c11ad5c5929bf3edd1505d3d8a8c0b Mon Sep 17 00:00:00 2001
From: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Date: Mon, 18 Apr 2005 23:06:47 -0400
Subject: [ACPI] fix C1 patch for IA64
http://bugzilla.kernel.org/show_bug.cgi?id=4233
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---
arch/ia64/kernel/process.c | 1 +
arch/ia64/kernel/setup.c | 3 +++
2 files changed, 4 insertions(+)
(limited to 'arch/ia64/kernel')
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index ebb71f3d6d1..a9bfba46733 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -195,6 +195,7 @@ update_pal_halt_status(int status)
void
default_idle (void)
{
+ local_irq_enable();
while (!need_resched())
if (can_do_pal_halt)
safe_halt();
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index d14692e0920..bb9033187d4 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -40,6 +40,8 @@
#include <linux/serial_core.h>
#include <linux/efi.h>
#include <linux/initrd.h>
+#include <linux/platform.h>
+#include <linux/pm.h>
#include <asm/ia32.h>
#include <asm/machvec.h>
@@ -779,6 +781,7 @@ cpu_init (void)
/* size of physical stacked register partition plus 8 bytes: */
__get_cpu_var(ia64_phys_stacked_size_p8) = num_phys_stacked*8 + 8;
platform_cpu_init();
+ pm_idle = default_idle;
}
void
--
cgit v1.2.3-18-g5258