Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.

The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]).  The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.

* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
  genirq: improve include files
  intr_remapping: fix typo
  io_apic: make irq_mis_count available on 64-bit too
  genirq: fix name space collisions of nr_irqs in arch/*
  genirq: fix name space collision of nr_irqs in autoprobe.c
  genirq: use iterators for irq_desc loops
  proc: fixup irq iterator
  genirq: add reverse iterator for irq_desc
  x86: move ack_bad_irq() to irq.c
  x86: unify show_interrupts() and proc helpers
  x86: cleanup show_interrupts
  genirq: cleanup the sparseirq modifications
  genirq: remove artifacts from sparseirq removal
  genirq: revert dynarray
  genirq: remove irq_to_desc_alloc
  genirq: remove sparse irq code
  genirq: use inline function for irq_to_desc
  genirq: consolidate nr_irqs and for_each_irq_desc()
  x86: remove sparse irq from Kconfig
  genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
  ...

25 files changed, 261 insertions, 156 deletions

diff --git a/include/asm-x86/apic.h b/include/asm-x86/apic.h
index d76a0839abe9..ef1d72dbdfe0 100644
--- a/include/asm-x86/apic.h
+++ b/include/asm-x86/apic.h
@@ -40,8 +40,6 @@ extern void generic_apic_probe(void);
 extern unsigned int apic_verbosity;
 extern int local_apic_timer_c2_ok;
 
-extern int ioapic_force;
-
 extern int disable_apic;
 /*
  * Basic functions accessing APICs.
@@ -100,6 +98,20 @@ extern void check_x2apic(void);
 extern void enable_x2apic(void);
 extern void enable_IR_x2apic(void);
 extern void x2apic_icr_write(u32 low, u32 id);
+static inline int x2apic_enabled(void)
+{
+	int msr, msr2;
+
+	if (!cpu_has_x2apic)
+		return 0;
+
+	rdmsr(MSR_IA32_APICBASE, msr, msr2);
+	if (msr & X2APIC_ENABLE)
+		return 1;
+	return 0;
+}
+#else
+#define x2apic_enabled()	0
 #endif
 
 struct apic_ops {
diff --git a/include/asm-x86/bigsmp/apic.h b/include/asm-x86/bigsmp/apic.h
index 0a9cd7c5ca0c..1d9543b9d358 100644
--- a/include/asm-x86/bigsmp/apic.h
+++ b/include/asm-x86/bigsmp/apic.h
@@ -9,22 +9,17 @@ static inline int apic_id_registered(void)
 	return (1);
 }
 
-/* Round robin the irqs amoung the online cpus */
 static inline cpumask_t target_cpus(void)
 {
-	static unsigned long cpu = NR_CPUS;
-	do {
-		if (cpu >= NR_CPUS)
-			cpu = first_cpu(cpu_online_map);
-		else
-			cpu = next_cpu(cpu, cpu_online_map);
-	} while (cpu >= NR_CPUS);
-	return cpumask_of_cpu(cpu);
+#ifdef CONFIG_SMP
+        return cpu_online_map;
+#else
+        return cpumask_of_cpu(0);
+#endif
 }
 
 #undef APIC_DEST_LOGICAL
 #define APIC_DEST_LOGICAL	0
-#define TARGET_CPUS		(target_cpus())
 #define APIC_DFR_VALUE		(APIC_DFR_FLAT)
 #define INT_DELIVERY_MODE	(dest_Fixed)
 #define INT_DEST_MODE		(0)    /* phys delivery to target proc */
diff --git a/include/asm-x86/efi.h b/include/asm-x86/efi.h
index ed2de22e8705..313438e63348 100644
--- a/include/asm-x86/efi.h
+++ b/include/asm-x86/efi.h
@@ -94,4 +94,17 @@ extern void efi_reserve_early(void);
 extern void efi_call_phys_prelog(void);
 extern void efi_call_phys_epilog(void);
 
+#ifndef CONFIG_EFI
+/*
+ * IF EFI is not configured, have the EFI calls return -ENOSYS.
+ */
+#define efi_call0(_f)					(-ENOSYS)
+#define efi_call1(_f, _a1)				(-ENOSYS)
+#define efi_call2(_f, _a1, _a2)				(-ENOSYS)
+#define efi_call3(_f, _a1, _a2, _a3)			(-ENOSYS)
+#define efi_call4(_f, _a1, _a2, _a3, _a4)		(-ENOSYS)
+#define efi_call5(_f, _a1, _a2, _a3, _a4, _a5)		(-ENOSYS)
+#define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6)	(-ENOSYS)
+#endif /* CONFIG_EFI */
+
 #endif /* ASM_X86__EFI_H */
diff --git a/include/asm-x86/es7000/apic.h b/include/asm-x86/es7000/apic.h
index aae50c2fb303..380f0b4f17ed 100644
--- a/include/asm-x86/es7000/apic.h
+++ b/include/asm-x86/es7000/apic.h
@@ -17,7 +17,6 @@ static inline cpumask_t target_cpus(void)
 	return cpumask_of_cpu(smp_processor_id());
 #endif
 }
-#define TARGET_CPUS	(target_cpus())
 
 #if defined CONFIG_ES7000_CLUSTERED_APIC
 #define APIC_DFR_VALUE		(APIC_DFR_CLUSTER)
@@ -81,7 +80,7 @@ static inline void setup_apic_routing(void)
 	int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id());
 	printk("Enabling APIC mode:  %s.  Using %d I/O APICs, target cpus %lx\n",
 		(apic_version[apic] == 0x14) ?
-		"Physical Cluster" : "Logical Cluster", nr_ioapics, cpus_addr(TARGET_CPUS)[0]);
+		"Physical Cluster" : "Logical Cluster", nr_ioapics, cpus_addr(target_cpus())[0]);
 }
 
 static inline int multi_timer_check(int apic, int irq)
diff --git a/include/asm-x86/genapic_32.h b/include/asm-x86/genapic_32.h
index 34280f027664..6fe4f81bfcf9 100644
--- a/include/asm-x86/genapic_32.h
+++ b/include/asm-x86/genapic_32.h
@@ -57,6 +57,7 @@ struct genapic {
 	unsigned (*get_apic_id)(unsigned long x);
 	unsigned long apic_id_mask;
 	unsigned int (*cpu_mask_to_apicid)(cpumask_t cpumask);
+	cpumask_t (*vector_allocation_domain)(int cpu);
 
 #ifdef CONFIG_SMP
 	/* ipi */
@@ -104,6 +105,7 @@ struct genapic {
 	APICFUNC(get_apic_id)				\
 	.apic_id_mask = APIC_ID_MASK,			\
 	APICFUNC(cpu_mask_to_apicid)			\
+	APICFUNC(vector_allocation_domain)			\
 	APICFUNC(acpi_madt_oem_check)			\
 	IPIFUNC(send_IPI_mask)				\
 	IPIFUNC(send_IPI_allbutself)			\
diff --git a/include/asm-x86/hpet.h b/include/asm-x86/hpet.h
index cbbbb6d4dd32..58b273f6ef07 100644
--- a/include/asm-x86/hpet.h
+++ b/include/asm-x86/hpet.h
@@ -1,6 +1,8 @@
 #ifndef ASM_X86__HPET_H
 #define ASM_X86__HPET_H
 
+#include <linux/msi.h>
+
 #ifdef CONFIG_HPET_TIMER
 
 #define HPET_MMAP_SIZE		1024
@@ -10,6 +12,11 @@
 #define HPET_CFG		0x010
 #define HPET_STATUS		0x020
 #define HPET_COUNTER		0x0f0
+
+#define HPET_Tn_CFG(n)		(0x100 + 0x20 * n)
+#define HPET_Tn_CMP(n)		(0x108 + 0x20 * n)
+#define HPET_Tn_ROUTE(n)	(0x110 + 0x20 * n)
+
 #define HPET_T0_CFG		0x100
 #define HPET_T0_CMP		0x108
 #define HPET_T0_ROUTE		0x110
@@ -65,6 +72,20 @@ extern void hpet_disable(void);
 extern unsigned long hpet_readl(unsigned long a);
 extern void force_hpet_resume(void);
 
+extern void hpet_msi_unmask(unsigned int irq);
+extern void hpet_msi_mask(unsigned int irq);
+extern void hpet_msi_write(unsigned int irq, struct msi_msg *msg);
+extern void hpet_msi_read(unsigned int irq, struct msi_msg *msg);
+
+#ifdef CONFIG_PCI_MSI
+extern int arch_setup_hpet_msi(unsigned int irq);
+#else
+static inline int arch_setup_hpet_msi(unsigned int irq)
+{
+	return -EINVAL;
+}
+#endif
+
 #ifdef CONFIG_HPET_EMULATE_RTC
 
 #include <linux/interrupt.h>
diff --git a/include/asm-x86/hw_irq.h b/include/asm-x86/hw_irq.h
index 50f6e0316b50..749d042f0556 100644
--- a/include/asm-x86/hw_irq.h
+++ b/include/asm-x86/hw_irq.h
@@ -96,13 +96,8 @@ extern asmlinkage void qic_call_function_interrupt(void);
 
 /* SMP */
 extern void smp_apic_timer_interrupt(struct pt_regs *);
-#ifdef CONFIG_X86_32
 extern void smp_spurious_interrupt(struct pt_regs *);
 extern void smp_error_interrupt(struct pt_regs *);
-#else
-extern asmlinkage void smp_spurious_interrupt(void);
-extern asmlinkage void smp_error_interrupt(void);
-#endif
 #ifdef CONFIG_X86_SMP
 extern void smp_reschedule_interrupt(struct pt_regs *);
 extern void smp_call_function_interrupt(struct pt_regs *);
@@ -115,13 +110,13 @@ extern asmlinkage void smp_invalidate_interrupt(struct pt_regs *);
 #endif
 
 #ifdef CONFIG_X86_32
-extern void (*const interrupt[NR_IRQS])(void);
-#else
+extern void (*const interrupt[NR_VECTORS])(void);
+#endif
+
 typedef int vector_irq_t[NR_VECTORS];
 DECLARE_PER_CPU(vector_irq_t, vector_irq);
-#endif
 
-#if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_X86_64)
+#ifdef CONFIG_X86_IO_APIC
 extern void lock_vector_lock(void);
 extern void unlock_vector_lock(void);
 extern void __setup_vector_irq(int cpu);
diff --git a/include/asm-x86/io_apic.h b/include/asm-x86/io_apic.h
index 8ec68a50cf10..d35cbd7aa587 100644
--- a/include/asm-x86/io_apic.h
+++ b/include/asm-x86/io_apic.h
@@ -4,6 +4,7 @@
 #include <linux/types.h>
 #include <asm/mpspec.h>
 #include <asm/apicdef.h>
+#include <asm/irq_vectors.h>
 
 /*
  * Intel IO-APIC support for SMP and UP systems.
@@ -87,24 +88,8 @@ struct IO_APIC_route_entry {
 		mask		:  1,	/* 0: enabled, 1: disabled */
 		__reserved_2	: 15;
 
-#ifdef CONFIG_X86_32
-	union {
-		struct {
-			__u32	__reserved_1	: 24,
-				physical_dest	:  4,
-				__reserved_2	:  4;
-		} physical;
-
-		struct {
-			__u32	__reserved_1	: 24,
-				logical_dest	:  8;
-		} logical;
-	} dest;
-#else
 	__u32	__reserved_3	: 24,
 		dest		:  8;
-#endif
-
 } __attribute__ ((packed));
 
 struct IR_IO_APIC_route_entry {
@@ -203,10 +188,17 @@ extern void restore_IO_APIC_setup(void);
 extern void reinit_intr_remapped_IO_APIC(int);
 #endif
 
+extern int probe_nr_irqs(void);
+
 #else  /* !CONFIG_X86_IO_APIC */
 #define io_apic_assign_pci_irqs 0
 static const int timer_through_8259 = 0;
 static inline void ioapic_init_mappings(void) { }
+
+static inline int probe_nr_irqs(void)
+{
+	return NR_IRQS;
+}
 #endif
 
 #endif /* ASM_X86__IO_APIC_H */
diff --git a/include/asm-x86/irq_vectors.h b/include/asm-x86/irq_vectors.h
index c5d2d767a1f3..a8d065d85f57 100644
--- a/include/asm-x86/irq_vectors.h
+++ b/include/asm-x86/irq_vectors.h
@@ -19,19 +19,14 @@
 
 /*
  * Reserve the lowest usable priority level 0x20 - 0x2f for triggering
- * cleanup after irq migration on 64 bit.
+ * cleanup after irq migration.
  */
 #define IRQ_MOVE_CLEANUP_VECTOR	FIRST_EXTERNAL_VECTOR
 
 /*
- * Vectors 0x20-0x2f are used for ISA interrupts on 32 bit.
- * Vectors 0x30-0x3f are used for ISA interrupts on 64 bit.
+ * Vectors 0x30-0x3f are used for ISA interrupts.
  */
-#ifdef CONFIG_X86_32
-#define IRQ0_VECTOR		(FIRST_EXTERNAL_VECTOR)
-#else
 #define IRQ0_VECTOR		(FIRST_EXTERNAL_VECTOR + 0x10)
-#endif
 #define IRQ1_VECTOR		(IRQ0_VECTOR + 1)
 #define IRQ2_VECTOR		(IRQ0_VECTOR + 2)
 #define IRQ3_VECTOR		(IRQ0_VECTOR + 3)
@@ -96,11 +91,7 @@
  * start at 0x31(0x41) to spread out vectors evenly between priority
  * levels. (0x80 is the syscall vector)
  */
-#ifdef CONFIG_X86_32
-# define FIRST_DEVICE_VECTOR	0x31
-#else
-# define FIRST_DEVICE_VECTOR	(IRQ15_VECTOR + 2)
-#endif
+#define FIRST_DEVICE_VECTOR	(IRQ15_VECTOR + 2)
 
 #define NR_VECTORS		256
 
@@ -116,7 +107,6 @@
 # else
 #  define NR_IRQS (NR_VECTORS + (32 * MAX_IO_APICS))
 # endif
-# define NR_IRQ_VECTORS NR_IRQS
 
 #elif !defined(CONFIG_X86_VOYAGER)
 
@@ -124,23 +114,15 @@
 
 #  define NR_IRQS		224
 
-#  if (224 >= 32 * NR_CPUS)
-#   define NR_IRQ_VECTORS	NR_IRQS
-#  else
-#   define NR_IRQ_VECTORS	(32 * NR_CPUS)
-#  endif
-
 # else /* IO_APIC || PARAVIRT */
 
 #  define NR_IRQS		16
-#  define NR_IRQ_VECTORS	NR_IRQS
 
 # endif
 
 #else /* !VISWS && !VOYAGER */
 
 # define NR_IRQS		224
-# define NR_IRQ_VECTORS		NR_IRQS
 
 #endif /* VISWS */
 
diff --git a/include/asm-x86/mach-default/entry_arch.h b/include/asm-x86/mach-default/entry_arch.h
index 9283b60a1dd2..6b1add8e31dd 100644
--- a/include/asm-x86/mach-default/entry_arch.h
+++ b/include/asm-x86/mach-default/entry_arch.h
@@ -14,6 +14,7 @@ BUILD_INTERRUPT(reschedule_interrupt,RESCHEDULE_VECTOR)
 BUILD_INTERRUPT(invalidate_interrupt,INVALIDATE_TLB_VECTOR)
 BUILD_INTERRUPT(call_function_interrupt,CALL_FUNCTION_VECTOR)
 BUILD_INTERRUPT(call_function_single_interrupt,CALL_FUNCTION_SINGLE_VECTOR)
+BUILD_INTERRUPT(irq_move_cleanup_interrupt,IRQ_MOVE_CLEANUP_VECTOR)
 #endif
 
 /*
diff --git a/include/asm-x86/mach-default/mach_apic.h b/include/asm-x86/mach-default/mach_apic.h
index 2a330a41b3dd..3c66f2cdaec1 100644
--- a/include/asm-x86/mach-default/mach_apic.h
+++ b/include/asm-x86/mach-default/mach_apic.h
@@ -85,6 +85,20 @@ static inline int apicid_to_node(int logical_apicid)
 	return 0;
 #endif
 }
+
+static inline cpumask_t vector_allocation_domain(int cpu)
+{
+        /* Careful. Some cpus do not strictly honor the set of cpus
+         * specified in the interrupt destination when using lowest
+         * priority interrupt delivery mode.
+         *
+         * In particular there was a hyperthreading cpu observed to
+         * deliver interrupts to the wrong hyperthread when only one
+         * hyperthread was specified in the interrupt desitination.
+         */
+        cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
+        return domain;
+}
 #endif
 
 static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid)
@@ -138,6 +152,5 @@ static inline int check_phys_apicid_present(int boot_cpu_physical_apicid)
 static inline void enable_apic_mode(void)
 {
 }
-
 #endif /* CONFIG_X86_LOCAL_APIC */
 #endif /* ASM_X86__MACH_DEFAULT__MACH_APIC_H */
diff --git a/include/asm-x86/mach-generic/irq_vectors_limits.h b/include/asm-x86/mach-generic/irq_vectors_limits.h
deleted file mode 100644
index f7870e1a220d..000000000000
--- a/include/asm-x86/mach-generic/irq_vectors_limits.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef ASM_X86__MACH_GENERIC__IRQ_VECTORS_LIMITS_H
-#define ASM_X86__MACH_GENERIC__IRQ_VECTORS_LIMITS_H
-
-/*
- * For Summit or generic (i.e. installer) kernels, we have lots of I/O APICs,
- * even with uni-proc kernels, so use a big array.
- *
- * This value should be the same in both the generic and summit subarches.
- * Change one, change 'em both.
- */
-#define NR_IRQS	224
-#define NR_IRQ_VECTORS	1024
-
-#endif /* ASM_X86__MACH_GENERIC__IRQ_VECTORS_LIMITS_H */
diff --git a/include/asm-x86/mach-generic/mach_apic.h b/include/asm-x86/mach-generic/mach_apic.h
index 5d010c6881dd..5085b52da301 100644
--- a/include/asm-x86/mach-generic/mach_apic.h
+++ b/include/asm-x86/mach-generic/mach_apic.h
@@ -24,6 +24,7 @@
 #define check_phys_apicid_present (genapic->check_phys_apicid_present)
 #define check_apicid_used (genapic->check_apicid_used)
 #define cpu_mask_to_apicid (genapic->cpu_mask_to_apicid)
+#define vector_allocation_domain (genapic->vector_allocation_domain)
 #define enable_apic_mode (genapic->enable_apic_mode)
 #define phys_pkg_id (genapic->phys_pkg_id)
 
diff --git a/include/asm-x86/numaq/apic.h b/include/asm-x86/numaq/apic.h
index a8344ba6ea15..0bf2a06b7a4e 100644
--- a/include/asm-x86/numaq/apic.h
+++ b/include/asm-x86/numaq/apic.h
@@ -12,8 +12,6 @@ static inline cpumask_t target_cpus(void)
 	return CPU_MASK_ALL;
 }
 
-#define TARGET_CPUS (target_cpus())
-
 #define NO_BALANCE_IRQ (1)
 #define esr_disable (1)
 
diff --git a/include/asm-x86/summit/apic.h b/include/asm-x86/summit/apic.h
index 394b00bb5e72..9b3070f1c2ac 100644
--- a/include/asm-x86/summit/apic.h
+++ b/include/asm-x86/summit/apic.h
@@ -22,7 +22,6 @@ static inline cpumask_t target_cpus(void)
 	 */
 	return cpumask_of_cpu(0);
 }
-#define TARGET_CPUS	(target_cpus())
 
 #define INT_DELIVERY_MODE (dest_LowestPrio)
 #define INT_DEST_MODE 1     /* logical delivery broadcast to all procs */
diff --git a/include/asm-x86/summit/irq_vectors_limits.h b/include/asm-x86/summit/irq_vectors_limits.h
deleted file mode 100644
index 890ce3f5e09a..000000000000
--- a/include/asm-x86/summit/irq_vectors_limits.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef _ASM_IRQ_VECTORS_LIMITS_H
-#define _ASM_IRQ_VECTORS_LIMITS_H
-
-/*
- * For Summit or generic (i.e. installer) kernels, we have lots of I/O APICs,
- * even with uni-proc kernels, so use a big array.
- *
- * This value should be the same in both the generic and summit subarches.
- * Change one, change 'em both.
- */
-#define NR_IRQS	224
-#define NR_IRQ_VECTORS	1024
-
-#endif /* _ASM_IRQ_VECTORS_LIMITS_H */
diff --git a/include/asm-x86/uv/bios.h b/include/asm-x86/uv/bios.h
index 7cd6d7ec1308..215f1969c266 100644
--- a/include/asm-x86/uv/bios.h
+++ b/include/asm-x86/uv/bios.h
@@ -2,9 +2,7 @@
 #define ASM_X86__UV__BIOS_H
 
 /*
- * BIOS layer definitions.
- *
- *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+ * UV BIOS layer definitions.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -19,50 +17,78 @@
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+ *  Copyright (c) Russ Anderson
  */
 
 #include <linux/rtc.h>
 
-#define BIOS_FREQ_BASE			0x01000001
+/*
+ * Values for the BIOS calls.  It is passed as the first * argument in the
+ * BIOS call.  Passing any other value in the first argument will result
+ * in a BIOS_STATUS_UNIMPLEMENTED return status.
+ */
+enum uv_bios_cmd {
+	UV_BIOS_COMMON,
+	UV_BIOS_GET_SN_INFO,
+	UV_BIOS_FREQ_BASE
+};
 
+/*
+ * Status values returned from a BIOS call.
+ */
 enum {
-	BIOS_FREQ_BASE_PLATFORM = 0,
-	BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
-	BIOS_FREQ_BASE_REALTIME_CLOCK = 2
+	BIOS_STATUS_SUCCESS		=  0,
+	BIOS_STATUS_UNIMPLEMENTED	= -ENOSYS,
+	BIOS_STATUS_EINVAL		= -EINVAL,
+	BIOS_STATUS_UNAVAIL		= -EBUSY
 };
 
-# define BIOS_CALL(result, a0, a1, a2, a3, a4, a5, a6, a7)		\
-	do {								\
-		/* XXX - the real call goes here */			\
-		result.status = BIOS_STATUS_UNIMPLEMENTED;		\
-		isrv.v0 = 0;						\
-		isrv.v1 = 0;						\
-	} while (0)
+/*
+ * The UV system table describes specific firmware
+ * capabilities available to the Linux kernel at runtime.
+ */
+struct uv_systab {
+	char signature[4];	/* must be "UVST" */
+	u32 revision;		/* distinguish different firmware revs */
+	u64 function;		/* BIOS runtime callback function ptr */
+};
 
 enum {
-	BIOS_STATUS_SUCCESS		=  0,
-	BIOS_STATUS_UNIMPLEMENTED	= -1,
-	BIOS_STATUS_EINVAL		= -2,
-	BIOS_STATUS_ERROR		= -3
+	BIOS_FREQ_BASE_PLATFORM = 0,
+	BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
+	BIOS_FREQ_BASE_REALTIME_CLOCK = 2
 };
 
-struct uv_bios_retval {
-	/*
-	 * A zero status value indicates call completed without error.
-	 * A negative status value indicates reason of call failure.
-	 * A positive status value indicates success but an
-	 * informational value should be printed (e.g., "reboot for
-	 * change to take effect").
-	 */
-	s64 status;
-	u64 v0;
-	u64 v1;
-	u64 v2;
+union partition_info_u {
+	u64	val;
+	struct {
+		u64	hub_version	:  8,
+			partition_id	: 16,
+			coherence_id	: 16,
+			region_size	: 24;
+	};
 };
 
-extern long
-x86_bios_freq_base(unsigned long which, unsigned long *ticks_per_second,
-		   unsigned long *drift_info);
-extern const char *x86_bios_strerror(long status);
+/*
+ * bios calls have 6 parameters
+ */
+extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64);
+extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64);
+extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);
+
+extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *);
+extern s64 uv_bios_freq_base(u64, u64 *);
+
+extern void uv_bios_init(void);
+
+extern int uv_type;
+extern long sn_partition_id;
+extern long uv_coherency_id;
+extern long uv_region_size;
+#define partition_coherence_id()	(uv_coherency_id)
+
+extern struct kobject *sgi_uv_kobj;	/* /sys/firmware/sgi_uv */
 
 #endif /* ASM_X86__UV__BIOS_H */
diff --git a/include/asm-x86/uv/uv_irq.h b/include/asm-x86/uv/uv_irq.h
new file mode 100644
index 000000000000..8bf5f32da9c6
--- /dev/null
+++ b/include/asm-x86/uv/uv_irq.h
@@ -0,0 +1,36 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * SGI UV IRQ definitions
+ *
+ * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#ifndef ASM_X86__UV__UV_IRQ_H
+#define ASM_X86__UV__UV_IRQ_H
+
+/* If a generic version of this structure gets defined, eliminate this one. */
+struct uv_IO_APIC_route_entry {
+	__u64	vector		:  8,
+		delivery_mode	:  3,
+		dest_mode	:  1,
+		delivery_status	:  1,
+		polarity	:  1,
+		__reserved_1	:  1,
+		trigger		:  1,
+		mask		:  1,
+		__reserved_2	: 15,
+		dest		: 32;
+};
+
+extern struct irq_chip uv_irq_chip;
+
+extern int arch_enable_uv_irq(char *, unsigned int, int, int, unsigned long);
+extern void arch_disable_uv_irq(int, unsigned long);
+
+extern int uv_setup_irq(char *, int, int, unsigned long);
+extern void uv_teardown_irq(unsigned int, int, unsigned long);
+
+#endif /* ASM_X86__UV__UV_IRQ_H */
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index c360c558e59e..f1984fc3e06d 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -45,7 +45,6 @@ extern struct list_head dmar_drhd_units;
 	list_for_each_entry(drhd, &dmar_drhd_units, list)
 
 extern int dmar_table_init(void);
-extern int early_dmar_detect(void);
 extern int dmar_dev_scope_init(void);
 
 /* Intel IOMMU detection */
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 807373d467f7..bb66feb164bd 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -208,6 +208,9 @@ typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_siz
 #define EFI_GLOBAL_VARIABLE_GUID \
     EFI_GUID(  0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
 
+#define UV_SYSTEM_TABLE_GUID \
+    EFI_GUID(  0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
+
 typedef struct {
 	efi_guid_t guid;
 	unsigned long table;
@@ -255,6 +258,7 @@ extern struct efi {
 	unsigned long boot_info;	/* boot info table */
 	unsigned long hcdp;		/* HCDP table */
 	unsigned long uga;		/* UGA table */
+	unsigned long uv_systab;	/* UV system table */
 	efi_get_time_t *get_time;
 	efi_set_time_t *set_time;
 	efi_get_wakeup_time_t *get_wakeup_time;
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 35a61dc60d51..f58a0cf8929a 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -8,6 +8,7 @@
 #include <linux/preempt.h>
 #include <linux/cpumask.h>
 #include <linux/irqreturn.h>
+#include <linux/irqnr.h>
 #include <linux/hardirq.h>
 #include <linux/sched.h>
 #include <linux/irqflags.h>
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 8d9411bc60f6..d058c57be02d 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -18,6 +18,7 @@
 #include <linux/spinlock.h>
 #include <linux/cpumask.h>
 #include <linux/irqreturn.h>
+#include <linux/irqnr.h>
 #include <linux/errno.h>
 
 #include <asm/irq.h>
@@ -152,6 +153,7 @@ struct irq_chip {
  * @name:		flow handler name for /proc/interrupts output
  */
 struct irq_desc {
+	unsigned int		irq;
 	irq_flow_handler_t	handle_irq;
 	struct irq_chip		*chip;
 	struct msi_desc		*msi_desc;
@@ -170,7 +172,7 @@ struct irq_desc {
 	cpumask_t		affinity;
 	unsigned int		cpu;
 #endif
-#if defined(CONFIG_GENERIC_PENDING_IRQ) || defined(CONFIG_IRQBALANCE)
+#ifdef CONFIG_GENERIC_PENDING_IRQ
 	cpumask_t		pending_mask;
 #endif
 #ifdef CONFIG_PROC_FS
@@ -179,8 +181,14 @@ struct irq_desc {
 	const char		*name;
 } ____cacheline_internodealigned_in_smp;
 
+
 extern struct irq_desc irq_desc[NR_IRQS];
 
+static inline struct irq_desc *irq_to_desc(unsigned int irq)
+{
+	return (irq < nr_irqs) ? irq_desc + irq : NULL;
+}
+
 /*
  * Migration helpers for obsolete names, they will go away:
  */
@@ -198,19 +206,15 @@ extern int setup_irq(unsigned int irq, struct irqaction *new);
 
 #ifdef CONFIG_GENERIC_HARDIRQS
 
-#ifndef handle_dynamic_tick
-# define handle_dynamic_tick(a)		do { } while (0)
-#endif
-
 #ifdef CONFIG_SMP
 
-#if defined(CONFIG_GENERIC_PENDING_IRQ) || defined(CONFIG_IRQBALANCE)
+#ifdef CONFIG_GENERIC_PENDING_IRQ
 
 void set_pending_irq(unsigned int irq, cpumask_t mask);
 void move_native_irq(int irq);
 void move_masked_irq(int irq);
 
-#else /* CONFIG_GENERIC_PENDING_IRQ || CONFIG_IRQBALANCE */
+#else /* CONFIG_GENERIC_PENDING_IRQ */
 
 static inline void move_irq(int irq)
 {
@@ -237,19 +241,14 @@ static inline void set_pending_irq(unsigned int irq, cpumask_t mask)
 
 #endif /* CONFIG_SMP */
 
-#ifdef CONFIG_IRQBALANCE
-extern void set_balance_irq_affinity(unsigned int irq, cpumask_t mask);
-#else
-static inline void set_balance_irq_affinity(unsigned int irq, cpumask_t mask)
-{
-}
-#endif
-
 extern int no_irq_affinity;
 
 static inline int irq_balancing_disabled(unsigned int irq)
 {
-	return irq_desc[irq].status & IRQ_NO_BALANCING_MASK;
+	struct irq_desc *desc;
+
+	desc = irq_to_desc(irq);
+	return desc->status & IRQ_NO_BALANCING_MASK;
 }
 
 /* Handle irq action chains: */
@@ -279,10 +278,8 @@ extern unsigned int __do_IRQ(unsigned int irq);
  * irqchip-style controller then we call the ->handle_irq() handler,
  * and it calls __do_IRQ() if it's attached to an irqtype-style controller.
  */
-static inline void generic_handle_irq(unsigned int irq)
+static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc)
 {
-	struct irq_desc *desc = irq_desc + irq;
-
 #ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
 	desc->handle_irq(irq, desc);
 #else
@@ -293,6 +290,11 @@ static inline void generic_handle_irq(unsigned int irq)
 #endif
 }
 
+static inline void generic_handle_irq(unsigned int irq)
+{
+	generic_handle_irq_desc(irq, irq_to_desc(irq));
+}
+
 /* Handling of unhandled and spurious interrupts: */
 extern void note_interrupt(unsigned int irq, struct irq_desc *desc,
 			   int action_ret);
@@ -325,7 +327,10 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
 static inline void __set_irq_handler_unlocked(int irq,
 					      irq_flow_handler_t handler)
 {
-	irq_desc[irq].handle_irq = handler;
+	struct irq_desc *desc;
+
+	desc = irq_to_desc(irq);
+	desc->handle_irq = handler;
 }
 
 /*
@@ -353,13 +358,14 @@ extern void set_irq_noprobe(unsigned int irq);
 extern void set_irq_probe(unsigned int irq);
 
 /* Handle dynamic irq creation and destruction */
+extern unsigned int create_irq_nr(unsigned int irq_want);
 extern int create_irq(void);
 extern void destroy_irq(unsigned int irq);
 
 /* Test to see if a driver has successfully requested an irq */
 static inline int irq_has_action(unsigned int irq)
 {
-	struct irq_desc *desc = irq_desc + irq;
+	struct irq_desc *desc = irq_to_desc(irq);
 	return desc->action != NULL;
 }
 
@@ -374,10 +380,10 @@ extern int set_irq_chip_data(unsigned int irq, void *data);
 extern int set_irq_type(unsigned int irq, unsigned int type);
 extern int set_irq_msi(unsigned int irq, struct msi_desc *entry);
 
-#define get_irq_chip(irq)	(irq_desc[irq].chip)
-#define get_irq_chip_data(irq)	(irq_desc[irq].chip_data)
-#define get_irq_data(irq)	(irq_desc[irq].handler_data)
-#define get_irq_msi(irq)	(irq_desc[irq].msi_desc)
+#define get_irq_chip(irq)	(irq_to_desc(irq)->chip)
+#define get_irq_chip_data(irq)	(irq_to_desc(irq)->chip_data)
+#define get_irq_data(irq)	(irq_to_desc(irq)->handler_data)
+#define get_irq_msi(irq)	(irq_to_desc(irq)->msi_desc)
 
 #endif /* CONFIG_GENERIC_HARDIRQS */
 
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
new file mode 100644
index 000000000000..3171ddc3b39d
--- /dev/null
+++ b/include/linux/irqnr.h
@@ -0,0 +1,24 @@
+#ifndef _LINUX_IRQNR_H
+#define _LINUX_IRQNR_H
+
+#ifndef CONFIG_GENERIC_HARDIRQS
+#include <asm/irq.h>
+# define nr_irqs		NR_IRQS
+
+# define for_each_irq_desc(irq, desc)		\
+	for (irq = 0; irq < nr_irqs; irq++)
+#else
+extern int nr_irqs;
+
+# define for_each_irq_desc(irq, desc)		\
+	for (irq = 0, desc = irq_desc; irq < nr_irqs; irq++, desc++)
+
+# define for_each_irq_desc_reverse(irq, desc)			\
+	for (irq = nr_irqs -1, desc = irq_desc + (nr_irqs -1 );	\
+	     irq > 0; irq--, desc--)
+#endif
+
+#define for_each_irq_nr(irq)			\
+	for (irq = 0; irq < nr_irqs; irq++)
+
+#endif
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index cac3750cd65e..4a145caeee07 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -39,15 +39,29 @@ DECLARE_PER_CPU(struct kernel_stat, kstat);
 
 extern unsigned long long nr_context_switches(void);
 
+struct irq_desc;
+
+static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
+					    struct irq_desc *desc)
+{
+	kstat_this_cpu.irqs[irq]++;
+}
+
+static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
+{
+       return kstat_cpu(cpu).irqs[irq];
+}
+
 /*
  * Number of interrupts per specific IRQ source, since bootup
  */
-static inline int kstat_irqs(int irq)
+static inline unsigned int kstat_irqs(unsigned int irq)
 {
-	int cpu, sum = 0;
+	unsigned int sum = 0;
+	int cpu;
 
 	for_each_possible_cpu(cpu)
-		sum += kstat_cpu(cpu).irqs[irq];
+		sum += kstat_irqs_cpu(irq, cpu);
 
 	return sum;
 }
diff --git a/include/linux/pci.h b/include/linux/pci.h
index acf8f24037cd..7f3f65ee4da7 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -725,7 +725,7 @@ enum pci_dma_burst_strategy {
 };
 
 struct msix_entry {
-	u16 	vector;	/* kernel uses to write allocated vector */
+	u32	vector;	/* kernel uses to write allocated vector */
 	u16	entry;	/* driver uses to specify entry, OS writes */
 };