12 files changed, 189 insertions, 12 deletions

diff --git a/arch/frv/mb93090-mb00/pci-irq.c b/arch/frv/mb93090-mb00/pci-irq.c
index 24622d89b1ca..af981bda015c 100644
--- a/arch/frv/mb93090-mb00/pci-irq.c
+++ b/arch/frv/mb93090-mb00/pci-irq.c
@@ -60,7 +60,7 @@ void __init pcibios_fixup_irqs(void)
         }
 }
 
-void __init pcibios_penalize_isa_irq(int irq)
+void __init pcibios_penalize_isa_irq(int irq, int active)
 {
 }
 
diff --git a/arch/i386/kernel/acpi/Makefile b/arch/i386/kernel/acpi/Makefile
index ee75cb286cfe..5e291a20c03d 100644
--- a/arch/i386/kernel/acpi/Makefile
+++ b/arch/i386/kernel/acpi/Makefile
@@ -2,3 +2,7 @@ obj-$(CONFIG_ACPI_BOOT)		:= boot.o
 obj-$(CONFIG_X86_IO_APIC)       += earlyquirk.o
 obj-$(CONFIG_ACPI_SLEEP)        += sleep.o wakeup.o
 
+ifneq ($(CONFIG_ACPI_PROCESSOR),)
+obj-y                           += cstate.o
+endif
+
diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c
new file mode 100644
index 000000000000..4c3036ba65df
--- /dev/null
+++ b/arch/i386/kernel/acpi/cstate.c
@@ -0,0 +1,103 @@
+/*
+ * arch/i386/kernel/acpi/cstate.c
+ *
+ * Copyright (C) 2005 Intel Corporation
+ *      Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+ *      - Added _PDC for SMP C-states on Intel CPUs
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+
+#include <acpi/processor.h>
+#include <asm/acpi.h>
+
+static void acpi_processor_power_init_intel_pdc(struct acpi_processor_power
+                                                *pow)
+{
+        struct acpi_object_list *obj_list;
+        union acpi_object *obj;
+        u32 *buf;
+
+        /* allocate and initialize pdc. It will be used later. */
+        obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
+        if (!obj_list) {
+                printk(KERN_ERR "Memory allocation error\n");
+                return;
+        }
+
+        obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
+        if (!obj) {
+                printk(KERN_ERR "Memory allocation error\n");
+                kfree(obj_list);
+                return;
+        }
+
+        buf = kmalloc(12, GFP_KERNEL);
+        if (!buf) {
+                printk(KERN_ERR "Memory allocation error\n");
+                kfree(obj);
+                kfree(obj_list);
+                return;
+        }
+
+        buf[0] = ACPI_PDC_REVISION_ID;
+        buf[1] = 1;
+        buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
+
+        obj->type = ACPI_TYPE_BUFFER;
+        obj->buffer.length = 12;
+        obj->buffer.pointer = (u8 *) buf;
+        obj_list->count = 1;
+        obj_list->pointer = obj;
+        pow->pdc = obj_list;
+
+        return;
+}
+
+/* Initialize _PDC data based on the CPU vendor */
+void acpi_processor_power_init_pdc(struct acpi_processor_power *pow,
+                                   unsigned int cpu)
+{
+        struct cpuinfo_x86 *c = cpu_data + cpu;
+
+        pow->pdc = NULL;
+        if (c->x86_vendor == X86_VENDOR_INTEL)
+                acpi_processor_power_init_intel_pdc(pow);
+
+        return;
+}
+
+EXPORT_SYMBOL(acpi_processor_power_init_pdc);
+
+/*
+ * Initialize bm_flags based on the CPU cache properties
+ * On SMP it depends on cache configuration
+ * - When cache is not shared among all CPUs, we flush cache
+ *   before entering C3.
+ * - When cache is shared among all CPUs, we use bm_check
+ *   mechanism as in UP case
+ *
+ * This routine is called only after all the CPUs are online
+ */
+void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
+                                        unsigned int cpu)
+{
+        struct cpuinfo_x86 *c = cpu_data + cpu;
+
+        flags->bm_check = 0;
+        if (num_online_cpus() == 1)
+                flags->bm_check = 1;
+        else if (c->x86_vendor == X86_VENDOR_INTEL) {
+                /*
+                 * Today all CPUs that support C3 share cache.
+                 * TBD: This needs to look at cache shared map, once
+                 * multi-core detection patch makes to the base.
+                 */
+                flags->bm_check = 1;
+        }
+}
+
+EXPORT_SYMBOL(acpi_processor_power_init_bm_check);
diff --git a/arch/i386/kernel/acpi/wakeup.S b/arch/i386/kernel/acpi/wakeup.S
index 39d32484f6f5..44d886c745ec 100644
--- a/arch/i386/kernel/acpi/wakeup.S
+++ b/arch/i386/kernel/acpi/wakeup.S
@@ -74,8 +74,9 @@ wakeup_code:
         movw    %ax,%fs
         movw    $0x0e00 + 'i', %fs:(0x12)
         
-        # need a gdt
-        lgdt    real_save_gdt - wakeup_code
+        # need a gdt -- use lgdtl to force 32-bit operands, in case
+        # the GDT is located past 16 megabytes.
+        lgdtl   real_save_gdt - wakeup_code
 
         movl    real_save_cr0 - wakeup_code, %eax
         movl    %eax, %cr0
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
index 7dcbf70fc16f..327a55d4d1c6 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -375,7 +375,7 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
         arg0.buffer.pointer = (u8 *) arg0_buf;
         arg0_buf[0] = ACPI_PDC_REVISION_ID;
         arg0_buf[1] = 1;
-        arg0_buf[2] = ACPI_PDC_EST_CAPABILITY_SMP | ACPI_PDC_EST_CAPABILITY_MSR;
+        arg0_buf[2] = ACPI_PDC_EST_CAPABILITY_SMP_MSR;
 
         p.pdc = &arg_list;
 
diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c
index 78ca1ecbb907..766b104ac1a1 100644
--- a/arch/i386/pci/irq.c
+++ b/arch/i386/pci/irq.c
@@ -1051,24 +1051,28 @@ static int __init pcibios_irq_init(void)
 subsys_initcall(pcibios_irq_init);
 
 
-static void pirq_penalize_isa_irq(int irq)
+static void pirq_penalize_isa_irq(int irq, int active)
 {
         /*
          *  If any ISAPnP device reports an IRQ in its list of possible
          *  IRQ's, we try to avoid assigning it to PCI devices.
          */
-        if (irq < 16)
-                pirq_penalty[irq] += 100;
+        if (irq < 16) {
+                if (active)
+                        pirq_penalty[irq] += 1000;
+                else
+                        pirq_penalty[irq] += 100;
+        }
 }
 
-void pcibios_penalize_isa_irq(int irq)
+void pcibios_penalize_isa_irq(int irq, int active)
 {
 #ifdef CONFIG_ACPI_PCI
         if (!acpi_noirq)
-                acpi_penalize_isa_irq(irq);
+                acpi_penalize_isa_irq(irq, active);
         else
 #endif
-                pirq_penalize_isa_irq(irq);
+                pirq_penalize_isa_irq(irq, active);
 }
 
 static int pirq_enable_irq(struct pci_dev *dev)
diff --git a/arch/i386/pci/visws.c b/arch/i386/pci/visws.c
index 6a9248784439..314c933b6b8e 100644
--- a/arch/i386/pci/visws.c
+++ b/arch/i386/pci/visws.c
@@ -21,7 +21,7 @@ static int pci_visws_enable_irq(struct pci_dev *dev) { return 0; }
 
 int (*pcibios_enable_irq)(struct pci_dev *dev) = &pci_visws_enable_irq;
 
-void __init pcibios_penalize_isa_irq(int irq) {}
+void __init pcibios_penalize_isa_irq(int irq, int active) {}
 
 
 unsigned int pci_bus0, pci_bus1;
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 542256e98e60..9609f243e5d0 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 };
@@ -265,10 +271,56 @@ 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)
@@ -326,6 +378,8 @@ 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 736e328b5e61..4ebbf3974381 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/process.c b/arch/ia64/kernel/process.c
index 6e35bff05d59..e484910246ad 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -196,6 +196,7 @@ 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 2693e1522d7c..5c7c95737bbf 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>
@@ -783,6 +785,7 @@ 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
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index f1aafd4c05f9..d8030f3bd865 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);
 }