Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Update defconfig.
  [SPARC64]: Don't double-export synchronize_irq.
  [SPARC64]: Move over to GENERIC_HARDIRQS.
  [SPARC64]: Virtualize IRQ numbers.
  [SPARC64]: Kill ino_bucket->pil
  [SPARC]: Kill __irq_itoa().
  [SPARC64]: bp->pil can never be zero
  [SPARC64]: Send all device interrupts via one PIL.
  [SPARC]: Fix iommu_flush_iotlb end address
  [SPARC]: Mark smp init functions as cpuinit
  [SPARC]: Add missing rw can_lock macros
  [SPARC]: Setup cpu_possible_map
  [SPARC]: Add topology_init()

25 files changed, 515 insertions, 1204 deletions

diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index 42002b742deb..bcdf5ad0f035 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -896,13 +896,6 @@ static inline unsigned long get_irqmask(int irq_nr)
 	return 1 << irq_nr;
 }
 
-static inline char *pcic_irq_itoa(unsigned int irq)
-{
-	static char buff[16];
-	sprintf(buff, "%d", irq);
-	return buff;
-}
-
 static void pcic_disable_irq(unsigned int irq_nr)
 {
 	unsigned long mask, flags;
@@ -955,7 +948,6 @@ void __init sun4m_pci_init_IRQ(void)
 	BTFIXUPSET_CALL(clear_clock_irq, pcic_clear_clock_irq, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(clear_profile_irq, pcic_clear_profile_irq, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(load_profile_irq, pcic_load_profile_irq, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__irq_itoa, pcic_irq_itoa, BTFIXUPCALL_NORM);
 }
 
 int pcibios_assign_resource(struct pci_dev *pdev, int resource)
diff --git a/arch/sparc/kernel/setup.c b/arch/sparc/kernel/setup.c
index 3509e4305532..2cbf282f0d00 100644
--- a/arch/sparc/kernel/setup.c
+++ b/arch/sparc/kernel/setup.c
@@ -31,6 +31,7 @@
 #include <linux/console.h>
 #include <linux/spinlock.h>
 #include <linux/root_dev.h>
+#include <linux/cpu.h>
 
 #include <asm/system.h>
 #include <asm/io.h>
@@ -348,6 +349,8 @@ void __init setup_arch(char **cmdline_p)
 	init_mm.context = (unsigned long) NO_CONTEXT;
 	init_task.thread.kregs = &fake_swapper_regs;
 
+	smp_setup_cpu_possible_map();
+
 	paging_init();
 }
 
@@ -389,6 +392,8 @@ console_initcall(set_preferred_console);
 extern char *sparc_cpu_type;
 extern char *sparc_fpu_type;
 
+static int ncpus_probed;
+
 static int show_cpuinfo(struct seq_file *m, void *__unused)
 {
 	seq_printf(m,
@@ -411,7 +416,7 @@ static int show_cpuinfo(struct seq_file *m, void *__unused)
 		   romvec->pv_printrev >> 16,
 		   romvec->pv_printrev & 0xffff,
 		   &cputypval,
-		   num_possible_cpus(),
+		   ncpus_probed,
 		   num_online_cpus()
 #ifndef CONFIG_SMP
 		   , cpu_data(0).udelay_val/(500000/HZ),
@@ -471,3 +476,30 @@ void sun_do_break(void)
 
 int serial_console = -1;
 int stop_a_enabled = 1;
+
+static int __init topology_init(void)
+{
+	int i, ncpus, err;
+
+	/* Count the number of physically present processors in
+	 * the machine, even on uniprocessor, so that /proc/cpuinfo
+	 * output is consistent with 2.4.x
+	 */
+	ncpus = 0;
+	while (!cpu_find_by_instance(ncpus, NULL, NULL))
+		ncpus++;
+	ncpus_probed = ncpus;
+
+	err = 0;
+	for_each_online_cpu(i) {
+		struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
+		if (!p)
+			err = -ENOMEM;
+		else
+			register_cpu(p, i, NULL);
+	}
+
+	return err;
+}
+
+subsys_initcall(topology_init);
diff --git a/arch/sparc/kernel/smp.c b/arch/sparc/kernel/smp.c
index 40b42c88e6a7..6135d4faeeeb 100644
--- a/arch/sparc/kernel/smp.c
+++ b/arch/sparc/kernel/smp.c
@@ -58,7 +58,7 @@ cpumask_t smp_commenced_mask = CPU_MASK_NONE;
 /* Used to make bitops atomic */
 unsigned char bitops_spinlock = 0;
 
-void __init smp_store_cpu_info(int id)
+void __cpuinit smp_store_cpu_info(int id)
 {
 	int cpu_node;
 
@@ -267,22 +267,18 @@ int setup_profiling_timer(unsigned int multiplier)
 void __init smp_prepare_cpus(unsigned int max_cpus)
 {
 	extern void smp4m_boot_cpus(void);
-	int i, cpuid, ncpus, extra;
+	int i, cpuid, extra;
 
 	BUG_ON(sparc_cpu_model != sun4m);
 	printk("Entering SMP Mode...\n");
 
-	ncpus = 1;
 	extra = 0;
 	for (i = 0; !cpu_find_by_instance(i, NULL, &cpuid); i++) {
-		if (cpuid == boot_cpu_id)
-			continue;
-		if (cpuid < NR_CPUS && ncpus++ < max_cpus)
-			cpu_set(cpuid, phys_cpu_present_map);
-		else
+		if (cpuid >= NR_CPUS)
 			extra++;
 	}
-	if (max_cpus >= NR_CPUS && extra)
+	/* i = number of cpus */
+	if (extra && max_cpus > i - extra)
 		printk("Warning: NR_CPUS is too low to start all cpus\n");
 
 	smp_store_cpu_info(boot_cpu_id);
@@ -290,7 +286,25 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	smp4m_boot_cpus();
 }
 
-void __devinit smp_prepare_boot_cpu(void)
+/* Set this up early so that things like the scheduler can init
+ * properly.  We use the same cpu mask for both the present and
+ * possible cpu map.
+ */
+void __init smp_setup_cpu_possible_map(void)
+{
+	int instance, mid;
+
+	instance = 0;
+	while (!cpu_find_by_instance(instance, NULL, &mid)) {
+		if (mid < NR_CPUS) {
+			cpu_set(mid, phys_cpu_present_map);
+			cpu_set(mid, cpu_present_map);
+		}
+		instance++;
+	}
+}
+
+void __init smp_prepare_boot_cpu(void)
 {
 	int cpuid = hard_smp_processor_id();
 
@@ -306,7 +320,7 @@ void __devinit smp_prepare_boot_cpu(void)
 	cpu_set(cpuid, phys_cpu_present_map);
 }
 
-int __devinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu)
 {
 	extern int smp4m_boot_one_cpu(int);
 	int ret;
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index 4b376fae752c..fd7deabf9982 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -163,7 +163,6 @@ EXPORT_SYMBOL(BTFIXUP_CALL(__hard_smp_processor_id));
 #endif
 EXPORT_SYMBOL(BTFIXUP_CALL(enable_irq));
 EXPORT_SYMBOL(BTFIXUP_CALL(disable_irq));
-EXPORT_SYMBOL(BTFIXUP_CALL(__irq_itoa));
 EXPORT_SYMBOL(BTFIXUP_CALL(mmu_unlockarea));
 EXPORT_SYMBOL(BTFIXUP_CALL(mmu_lockarea));
 EXPORT_SYMBOL(BTFIXUP_CALL(mmu_get_scsi_sgl));
diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c
index 3d6a99073c42..0f2d8d9cbdba 100644
--- a/arch/sparc/kernel/sun4c_irq.c
+++ b/arch/sparc/kernel/sun4c_irq.c
@@ -198,8 +198,6 @@ static void __init sun4c_init_timers(irqreturn_t (*counter_fn)(int, void *, stru
 static void sun4c_nop(void) {}
 #endif
 
-extern char *sun4m_irq_itoa(unsigned int irq);
-
 void __init sun4c_init_IRQ(void)
 {
 	struct linux_prom_registers int_regs[2];
@@ -238,7 +236,6 @@ void __init sun4c_init_IRQ(void)
 	BTFIXUPSET_CALL(clear_clock_irq, sun4c_clear_clock_irq, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(clear_profile_irq, sun4c_clear_profile_irq, BTFIXUPCALL_NOP);
 	BTFIXUPSET_CALL(load_profile_irq, sun4c_load_profile_irq, BTFIXUPCALL_NOP);
-	BTFIXUPSET_CALL(__irq_itoa, sun4m_irq_itoa, BTFIXUPCALL_NORM);
 	sparc_init_timers = sun4c_init_timers;
 #ifdef CONFIG_SMP
 	BTFIXUPSET_CALL(set_cpu_int, sun4c_nop, BTFIXUPCALL_NOP);
diff --git a/arch/sparc/kernel/sun4d_irq.c b/arch/sparc/kernel/sun4d_irq.c
index ca656d9bd6fd..9c30e35c88f7 100644
--- a/arch/sparc/kernel/sun4d_irq.c
+++ b/arch/sparc/kernel/sun4d_irq.c
@@ -560,17 +560,6 @@ void __init sun4d_init_sbi_irq(void)
 	}
 }
 
-static char *sun4d_irq_itoa(unsigned int irq)
-{
-	static char buff[16];
-	
-	if (irq < (1 << 5))
-		sprintf(buff, "%d", irq);
-	else
-		sprintf(buff, "%d,%x", sbus_to_pil[(irq >> 2) & 7], irq);
-	return buff;
-}
-
 void __init sun4d_init_IRQ(void)
 {
 	local_irq_disable();
@@ -581,7 +570,6 @@ void __init sun4d_init_IRQ(void)
 	BTFIXUPSET_CALL(clear_clock_irq, sun4d_clear_clock_irq, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(clear_profile_irq, sun4d_clear_profile_irq, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(load_profile_irq, sun4d_load_profile_irq, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__irq_itoa, sun4d_irq_itoa, BTFIXUPCALL_NORM);
 	sparc_init_timers = sun4d_init_timers;
 #ifdef CONFIG_SMP
 	BTFIXUPSET_CALL(set_cpu_int, sun4d_set_cpu_int, BTFIXUPCALL_NORM);
diff --git a/arch/sparc/kernel/sun4m_irq.c b/arch/sparc/kernel/sun4m_irq.c
index 39d712c3c809..a296c13ac18f 100644
--- a/arch/sparc/kernel/sun4m_irq.c
+++ b/arch/sparc/kernel/sun4m_irq.c
@@ -229,13 +229,6 @@ static void sun4m_load_profile_irq(int cpu, unsigned int limit)
 	sun4m_timers->cpu_timers[cpu].l14_timer_limit = limit;
 }
 
-char *sun4m_irq_itoa(unsigned int irq)
-{
-	static char buff[16];
-	sprintf(buff, "%d", irq);
-	return buff;
-}
-
 static void __init sun4m_init_timers(irqreturn_t (*counter_fn)(int, void *, struct pt_regs *))
 {
 	int reg_count, irq, cpu;
@@ -388,7 +381,6 @@ void __init sun4m_init_IRQ(void)
 	BTFIXUPSET_CALL(clear_clock_irq, sun4m_clear_clock_irq, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(clear_profile_irq, sun4m_clear_profile_irq, BTFIXUPCALL_NORM);
 	BTFIXUPSET_CALL(load_profile_irq, sun4m_load_profile_irq, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__irq_itoa, sun4m_irq_itoa, BTFIXUPCALL_NORM);
 	sparc_init_timers = sun4m_init_timers;
 #ifdef CONFIG_SMP
 	BTFIXUPSET_CALL(set_cpu_int, sun4m_send_ipi, BTFIXUPCALL_NORM);
diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 70b375a4c2c2..3b32096134aa 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -66,7 +66,7 @@ static inline unsigned long swap(volatile unsigned long *ptr, unsigned long val)
 static void smp_setup_percpu_timer(void);
 extern void cpu_probe(void);
 
-void __init smp4m_callin(void)
+void __cpuinit smp4m_callin(void)
 {
 	int cpuid = hard_smp_processor_id();
 
@@ -112,13 +112,8 @@ void __init smp4m_callin(void)
 	local_irq_enable();
 
 	cpu_set(cpuid, cpu_online_map);
-	/* last one in gets all the interrupts (for testing) */
-	set_irq_udt(boot_cpu_id);
 }
 
-extern void init_IRQ(void);
-extern void cpu_panic(void);
-
 /*
  *	Cycle through the processors asking the PROM to start each one.
  */
@@ -134,7 +129,7 @@ void __init smp4m_boot_cpus(void)
 	local_flush_cache_all();
 }
 
-int smp4m_boot_one_cpu(int i)
+int __cpuinit smp4m_boot_one_cpu(int i)
 {
 	extern unsigned long sun4m_cpu_startup;
 	unsigned long *entry = &sun4m_cpu_startup;
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 77840c804786..7215849db392 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -144,8 +144,9 @@ static void iommu_flush_iotlb(iopte_t *iopte, unsigned int niopte)
 	unsigned long start;
 	unsigned long end;
 
-	start = (unsigned long)iopte & PAGE_MASK;
+	start = (unsigned long)iopte;
 	end = PAGE_ALIGN(start + niopte*sizeof(iopte_t));
+	start &= PAGE_MASK;
 	if (viking_mxcc_present) {
 		while(start < end) {
 			viking_mxcc_flush_page(start);
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index 43a66f5407f4..a7a111db25b2 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -87,6 +87,10 @@ config SYSVIPC_COMPAT
 	depends on COMPAT && SYSVIPC
 	default y
 
+config GENERIC_HARDIRQS
+	bool
+	default y
+
 menu "General machine setup"
 
 config SMP
diff --git a/arch/sparc64/defconfig b/arch/sparc64/defconfig
index f09a70b8aabd..9da75f89fe2c 100644
--- a/arch/sparc64/defconfig
+++ b/arch/sparc64/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.17-rc3
-# Fri May 12 12:43:49 2006
+# Linux kernel version: 2.6.17
+# Tue Jun 20 01:26:43 2006
 #
 CONFIG_SPARC=y
 CONFIG_SPARC64=y
@@ -87,6 +87,7 @@ CONFIG_DEFAULT_AS=y
 # CONFIG_DEFAULT_NOOP is not set
 CONFIG_DEFAULT_IOSCHED="anticipatory"
 CONFIG_SYSVIPC_COMPAT=y
+CONFIG_GENERIC_HARDIRQS=y
 
 #
 # General machine setup
@@ -183,6 +184,8 @@ CONFIG_INET_ESP=y
 CONFIG_INET_IPCOMP=y
 CONFIG_INET_XFRM_TUNNEL=y
 CONFIG_INET_TUNNEL=y
+CONFIG_INET_XFRM_MODE_TRANSPORT=y
+CONFIG_INET_XFRM_MODE_TUNNEL=y
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
 CONFIG_TCP_CONG_ADVANCED=y
@@ -198,6 +201,9 @@ CONFIG_TCP_CONG_HSTCP=m
 CONFIG_TCP_CONG_HYBLA=m
 CONFIG_TCP_CONG_VEGAS=m
 CONFIG_TCP_CONG_SCALABLE=m
+CONFIG_TCP_CONG_LP=m
+CONFIG_TCP_CONG_VENO=m
+CONFIG_TCP_CONG_COMPOUND=m
 CONFIG_IPV6=m
 CONFIG_IPV6_PRIVACY=y
 CONFIG_IPV6_ROUTER_PREF=y
@@ -207,7 +213,10 @@ CONFIG_INET6_ESP=m
 CONFIG_INET6_IPCOMP=m
 CONFIG_INET6_XFRM_TUNNEL=m
 CONFIG_INET6_TUNNEL=m
+CONFIG_INET6_XFRM_MODE_TRANSPORT=m
+CONFIG_INET6_XFRM_MODE_TUNNEL=m
 CONFIG_IPV6_TUNNEL=m
+# CONFIG_NETWORK_SECMARK is not set
 # CONFIG_NETFILTER is not set
 
 #
@@ -260,6 +269,7 @@ CONFIG_VLAN_8021Q=m
 # Network testing
 #
 CONFIG_NET_PKTGEN=m
+CONFIG_NET_TCPPROBE=m
 # CONFIG_HAMRADIO is not set
 # CONFIG_IRDA is not set
 # CONFIG_BT is not set
@@ -562,6 +572,7 @@ CONFIG_BNX2=m
 # CONFIG_CHELSIO_T1 is not set
 # CONFIG_IXGB is not set
 # CONFIG_S2IO is not set
+# CONFIG_MYRI10GE is not set
 
 #
 # Token Ring devices
@@ -811,6 +822,7 @@ CONFIG_HWMON=y
 # Multimedia devices
 #
 # CONFIG_VIDEO_DEV is not set
+CONFIG_VIDEO_V4L2=y
 
 #
 # Digital Video Broadcasting Devices
@@ -1135,6 +1147,19 @@ CONFIG_USB_HIDDEV=y
 # CONFIG_RTC_CLASS is not set
 
 #
+# DMA Engine support
+#
+# CONFIG_DMA_ENGINE is not set
+
+#
+# DMA Clients
+#
+
+#
+# DMA Devices
+#
+
+#
 # Misc Linux/SPARC drivers
 #
 CONFIG_SUN_OPENPROMIO=m
diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
index 007e8922cd16..0dd95ae50e12 100644
--- a/arch/sparc64/kernel/devices.c
+++ b/arch/sparc64/kernel/devices.c
@@ -157,7 +157,7 @@ unsigned int sun4v_vdev_device_interrupt(unsigned int dev_node)
 		return 0;
 	}
 
-	return sun4v_build_irq(sun4v_vdev_devhandle, irq, 5, 0);
+	return sun4v_build_irq(sun4v_vdev_devhandle, irq);
 }
 
 static const char *cpu_mid_prop(void)
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index 6d0b3ed77a02..be85ce2a4ad9 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -22,6 +22,7 @@
 #include <asm/estate.h>
 #include <asm/auxio.h>
 #include <asm/sfafsr.h>
+#include <asm/pil.h>
 
 #define curptr      g6
 
@@ -431,20 +432,16 @@ do_ivec:
 	membar		#Sync
 
 	sethi		%hi(ivector_table), %g2
-	sllx		%g3, 5, %g3
+	sllx		%g3, 3, %g3
 	or		%g2, %lo(ivector_table), %g2
 	add		%g2, %g3, %g3
-	ldub		[%g3 + 0x04], %g4	/* pil */
-	mov		1, %g2
-	sllx		%g2, %g4, %g2
-	sllx		%g4, 2, %g4
 
 	TRAP_LOAD_IRQ_WORK(%g6, %g1)
 
-	lduw		[%g6 + %g4], %g5	/* g5 = irq_work(cpu, pil) */
+	lduw		[%g6], %g5		/* g5 = irq_work(cpu) */
 	stw		%g5, [%g3 + 0x00]	/* bucket->irq_chain = g5 */
-	stw		%g3, [%g6 + %g4]	/* irq_work(cpu, pil) = bucket */
-	wr		%g2, 0x0, %set_softint
+	stw		%g3, [%g6]		/* irq_work(cpu) = bucket */
+	wr		%g0, 1 << PIL_DEVICE_IRQ, %set_softint
 	retry
 do_ivec_xcall:
 	mov		0x50, %g1
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 11e645c9ec50..a8c9dc8d1958 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -22,6 +22,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/bootmem.h>
+#include <linux/irq.h>
 
 #include <asm/ptrace.h>
 #include <asm/processor.h>
@@ -42,10 +43,6 @@
 #include <asm/auxio.h>
 #include <asm/head.h>
 
-#ifdef CONFIG_SMP
-static void distribute_irqs(void);
-#endif
-
 /* UPA nodes send interrupt packet to UltraSparc with first data reg
  * value low 5 (7 on Starfire) bits holding the IRQ identifier being
  * delivered.  We must translate this into a non-vector IRQ so we can
@@ -57,10 +54,29 @@ static void distribute_irqs(void);
  * The IVEC handler does not need to act atomically, the PIL dispatch
  * code uses CAS to get an atomic snapshot of the list and clear it
  * at the same time.
+ *
+ * If you make changes to ino_bucket, please update hand coded assembler
+ * of the vectored interrupt trap handler(s) in entry.S and sun4v_ivec.S
  */
+struct ino_bucket {
+	/* Next handler in per-CPU IRQ worklist.  We know that
+	 * bucket pointers have the high 32-bits clear, so to
+	 * save space we only store the bits we need.
+	 */
+/*0x00*/unsigned int irq_chain;
 
+	/* Virtual interrupt number assigned to this INO.  */
+/*0x04*/unsigned int virt_irq;
+};
+
+#define NUM_IVECS	(IMAP_INR + 1)
 struct ino_bucket ivector_table[NUM_IVECS] __attribute__ ((aligned (SMP_CACHE_BYTES)));
 
+#define __irq_ino(irq) \
+        (((struct ino_bucket *)(unsigned long)(irq)) - &ivector_table[0])
+#define __bucket(irq) ((struct ino_bucket *)(unsigned long)(irq))
+#define __irq(bucket) ((unsigned int)(unsigned long)(bucket))
+
 /* This has to be in the main kernel image, it cannot be
  * turned into per-cpu data.  The reason is that the main
  * kernel image is locked into the TLB and this structure
@@ -68,71 +84,82 @@ struct ino_bucket ivector_table[NUM_IVECS] __attribute__ ((aligned (SMP_CACHE_BY
  * access to this structure takes a TLB miss it could cause
  * the 5-level sparc v9 trap stack to overflow.
  */
-struct irq_work_struct {
-	unsigned int	irq_worklists[16];
-};
-struct irq_work_struct __irq_work[NR_CPUS];
-#define irq_work(__cpu, __pil)	&(__irq_work[(__cpu)].irq_worklists[(__pil)])
+#define irq_work(__cpu)	&(trap_block[(__cpu)].irq_worklist)
 
-static struct irqaction *irq_action[NR_IRQS+1];
+static unsigned int virt_to_real_irq_table[NR_IRQS];
+static unsigned char virt_irq_cur = 1;
 
-/* This only synchronizes entities which modify IRQ handler
- * state and some selected user-level spots that want to
- * read things in the table.  IRQ handler processing orders
- * its' accesses such that no locking is needed.
- */
-static DEFINE_SPINLOCK(irq_action_lock);
+static unsigned char virt_irq_alloc(unsigned int real_irq)
+{
+	unsigned char ent;
+
+	BUILD_BUG_ON(NR_IRQS >= 256);
+
+	ent = virt_irq_cur;
+	if (ent >= NR_IRQS) {
+		printk(KERN_ERR "IRQ: Out of virtual IRQs.\n");
+		return 0;
+	}
+
+	virt_irq_cur = ent + 1;
+	virt_to_real_irq_table[ent] = real_irq;
+
+	return ent;
+}
+
+#if 0 /* Currently unused. */
+static unsigned char real_to_virt_irq(unsigned int real_irq)
+{
+	struct ino_bucket *bucket = __bucket(real_irq);
 
-static void register_irq_proc (unsigned int irq);
+	return bucket->virt_irq;
+}
+#endif
+
+static unsigned int virt_to_real_irq(unsigned char virt_irq)
+{
+	return virt_to_real_irq_table[virt_irq];
+}
 
 /*
- * Upper 2b of irqaction->flags holds the ino.
- * irqaction->mask holds the smp affinity information.
+ * /proc/interrupts printing:
  */
-#define put_ino_in_irqaction(action, irq) \
-	action->flags &= 0xffffffffffffUL; \
-	if (__bucket(irq) == &pil0_dummy_bucket) \
-		action->flags |= 0xdeadUL << 48;  \
-	else \
-		action->flags |= __irq_ino(irq) << 48;
-#define get_ino_in_irqaction(action)	(action->flags >> 48)
-
-#define put_smpaff_in_irqaction(action, smpaff)	(action)->mask = (smpaff)
-#define get_smpaff_in_irqaction(action) 	((action)->mask)
 
 int show_interrupts(struct seq_file *p, void *v)
 {
+	int i = *(loff_t *) v, j;
+	struct irqaction * action;
 	unsigned long flags;
-	int i = *(loff_t *) v;
-	struct irqaction *action;
-#ifdef CONFIG_SMP
-	int j;
-#endif
 
-	spin_lock_irqsave(&irq_action_lock, flags);
-	if (i <= NR_IRQS) {
-		if (!(action = *(i + irq_action)))
-			goto out_unlock;
-		seq_printf(p, "%3d: ", i);
+	if (i == 0) {
+		seq_printf(p, "           ");
+		for_each_online_cpu(j)
+			seq_printf(p, "CPU%d       ",j);
+		seq_putc(p, '\n');
+	}
+
+	if (i < NR_IRQS) {
+		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		action = irq_desc[i].action;
+		if (!action)
+			goto skip;
+		seq_printf(p, "%3d: ",i);
 #ifndef CONFIG_SMP
 		seq_printf(p, "%10u ", kstat_irqs(i));
 #else
-		for_each_online_cpu(j) {
-			seq_printf(p, "%10u ",
-				   kstat_cpu(j).irqs[i]);
-		}
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
 #endif
-		seq_printf(p, " %s:%lx", action->name,
-			   get_ino_in_irqaction(action));
-		for (action = action->next; action; action = action->next) {
-			seq_printf(p, ", %s:%lx", action->name,
-				   get_ino_in_irqaction(action));
-		}
+		seq_printf(p, " %9s", irq_desc[i].handler->typename);
+		seq_printf(p, "  %s", action->name);
+
+		for (action=action->next; action; action = action->next)
+			seq_printf(p, ", %s", action->name);
+
 		seq_putc(p, '\n');
+skip:
+		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	}
-out_unlock:
-	spin_unlock_irqrestore(&irq_action_lock, flags);
-
 	return 0;
 }
 
@@ -173,556 +200,365 @@ static unsigned int sun4u_compute_tid(unsigned long imap, unsigned long cpuid)
 	return tid;
 }
 
-/* Now these are always passed a true fully specified sun4u INO. */
-void enable_irq(unsigned int irq)
-{
-	struct ino_bucket *bucket = __bucket(irq);
-	unsigned long imap, cpuid;
-
-	imap = bucket->imap;
-	if (imap == 0UL)
-		return;
-
-	preempt_disable();
-
-	/* This gets the physical processor ID, even on uniprocessor,
-	 * so we can always program the interrupt target correctly.
-	 */
-	cpuid = real_hard_smp_processor_id();
-
-	if (tlb_type == hypervisor) {
-		unsigned int ino = __irq_ino(irq);
-		int err;
+struct irq_handler_data {
+	unsigned long	iclr;
+	unsigned long	imap;
 
-		err = sun4v_intr_settarget(ino, cpuid);
-		if (err != HV_EOK)
-			printk("sun4v_intr_settarget(%x,%lu): err(%d)\n",
-			       ino, cpuid, err);
-		err = sun4v_intr_setenabled(ino, HV_INTR_ENABLED);
-		if (err != HV_EOK)
-			printk("sun4v_intr_setenabled(%x): err(%d)\n",
-			       ino, err);
-	} else {
-		unsigned int tid = sun4u_compute_tid(imap, cpuid);
-
-		/* NOTE NOTE NOTE, IGN and INO are read-only, IGN is a product
-		 * of this SYSIO's preconfigured IGN in the SYSIO Control
-		 * Register, the hardware just mirrors that value here.
-		 * However for Graphics and UPA Slave devices the full
-		 * IMAP_INR field can be set by the programmer here.
-		 *
-		 * Things like FFB can now be handled via the new IRQ
-		 * mechanism.
-		 */
-		upa_writel(tid | IMAP_VALID, imap);
-	}
-
-	preempt_enable();
-}
+	void		(*pre_handler)(unsigned int, void *, void *);
+	void		*pre_handler_arg1;
+	void		*pre_handler_arg2;
+};
 
-/* This now gets passed true ino's as well. */
-void disable_irq(unsigned int irq)
+static inline struct ino_bucket *virt_irq_to_bucket(unsigned int virt_irq)
 {
-	struct ino_bucket *bucket = __bucket(irq);
-	unsigned long imap;
-
-	imap = bucket->imap;
-	if (imap != 0UL) {
-		if (tlb_type == hypervisor) {
-			unsigned int ino = __irq_ino(irq);
-			int err;
-
-			err = sun4v_intr_setenabled(ino, HV_INTR_DISABLED);
-			if (err != HV_EOK)
-				printk("sun4v_intr_setenabled(%x): "
-				       "err(%d)\n", ino, err);
-		} else {
-			u32 tmp;
-
-			/* NOTE: We do not want to futz with the IRQ clear registers
-			 *       and move the state to IDLE, the SCSI code does call
-			 *       disable_irq() to assure atomicity in the queue cmd
-			 *       SCSI adapter driver code.  Thus we'd lose interrupts.
-			 */
-			tmp = upa_readl(imap);
-			tmp &= ~IMAP_VALID;
-			upa_writel(tmp, imap);
-		}
-	}
-}
+	unsigned int real_irq = virt_to_real_irq(virt_irq);
+	struct ino_bucket *bucket = NULL;
 
-/* The timer is the one "weird" interrupt which is generated by
- * the CPU %tick register and not by some normal vectored interrupt
- * source.  To handle this special case, we use this dummy INO bucket.
- */
-static struct irq_desc pil0_dummy_desc;
-static struct ino_bucket pil0_dummy_bucket = {
-	.irq_info	=	&pil0_dummy_desc,
-};
+	if (likely(real_irq))
+		bucket = __bucket(real_irq);
 
-static void build_irq_error(const char *msg, unsigned int ino, int pil, int inofixup,
-			    unsigned long iclr, unsigned long imap,
-			    struct ino_bucket *bucket)
-{
-	prom_printf("IRQ: INO %04x (%d:%016lx:%016lx) --> "
-		    "(%d:%d:%016lx:%016lx), halting...\n",
-		    ino, bucket->pil, bucket->iclr, bucket->imap,
-		    pil, inofixup, iclr, imap);
-	prom_halt();
+	return bucket;
 }
 
-unsigned int build_irq(int pil, int inofixup, unsigned long iclr, unsigned long imap)
+#ifdef CONFIG_SMP
+static int irq_choose_cpu(unsigned int virt_irq)
 {
-	struct ino_bucket *bucket;
-	int ino;
+	cpumask_t mask = irq_affinity[virt_irq];
+	int cpuid;
 
-	if (pil == 0) {
-		if (iclr != 0UL || imap != 0UL) {
-			prom_printf("Invalid dummy bucket for PIL0 (%lx:%lx)\n",
-				    iclr, imap);
-			prom_halt();
-		}
-		return __irq(&pil0_dummy_bucket);
-	}
+	if (cpus_equal(mask, CPU_MASK_ALL)) {
+		static int irq_rover;
+		static DEFINE_SPINLOCK(irq_rover_lock);
+		unsigned long flags;
 
-	BUG_ON(tlb_type == hypervisor);
+		/* Round-robin distribution... */
+	do_round_robin:
+		spin_lock_irqsave(&irq_rover_lock, flags);
 
-	/* RULE: Both must be specified in all other cases. */
-	if (iclr == 0UL || imap == 0UL) {
-		prom_printf("Invalid build_irq %d %d %016lx %016lx\n",
-			    pil, inofixup, iclr, imap);
-		prom_halt();
-	}
-	
-	ino = (upa_readl(imap) & (IMAP_IGN | IMAP_INO)) + inofixup;
-	if (ino > NUM_IVECS) {
-		prom_printf("Invalid INO %04x (%d:%d:%016lx:%016lx)\n",
-			    ino, pil, inofixup, iclr, imap);
-		prom_halt();
-	}
+		while (!cpu_online(irq_rover)) {
+			if (++irq_rover >= NR_CPUS)
+				irq_rover = 0;
+		}
+		cpuid = irq_rover;
+		do {
+			if (++irq_rover >= NR_CPUS)
+				irq_rover = 0;
+		} while (!cpu_online(irq_rover));
 
-	bucket = &ivector_table[ino];
-	if (bucket->flags & IBF_ACTIVE)
-		build_irq_error("IRQ: Trying to build active INO bucket.\n",
-				ino, pil, inofixup, iclr, imap, bucket);
+		spin_unlock_irqrestore(&irq_rover_lock, flags);
+	} else {
+		cpumask_t tmp;
 
-	if (bucket->irq_info) {
-		if (bucket->imap != imap || bucket->iclr != iclr)
-			build_irq_error("IRQ: Trying to reinit INO bucket.\n",
-					ino, pil, inofixup, iclr, imap, bucket);
+		cpus_and(tmp, cpu_online_map, mask);
 
-		goto out;
-	}
+		if (cpus_empty(tmp))
+			goto do_round_robin;
 
-	bucket->irq_info = kzalloc(sizeof(struct irq_desc), GFP_ATOMIC);
-	if (!bucket->irq_info) {
-		prom_printf("IRQ: Error, kmalloc(irq_desc) failed.\n");
-		prom_halt();
+		cpuid = first_cpu(tmp);
 	}
 
-	/* Ok, looks good, set it up.  Don't touch the irq_chain or
-	 * the pending flag.
-	 */
-	bucket->imap  = imap;
-	bucket->iclr  = iclr;
-	bucket->pil   = pil;
-	bucket->flags = 0;
-
-out:
-	return __irq(bucket);
+	return cpuid;
 }
-
-unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino, int pil, unsigned char flags)
+#else
+static int irq_choose_cpu(unsigned int virt_irq)
 {
-	struct ino_bucket *bucket;
-	unsigned long sysino;
+	return real_hard_smp_processor_id();
+}
+#endif
 
-	sysino = sun4v_devino_to_sysino(devhandle, devino);
+static void sun4u_irq_enable(unsigned int virt_irq)
+{
+	irq_desc_t *desc = irq_desc + virt_irq;
+	struct irq_handler_data *data = desc->handler_data;
 
-	bucket = &ivector_table[sysino];
+	if (likely(data)) {
+		unsigned long cpuid, imap;
+		unsigned int tid;
 
-	/* Catch accidental accesses to these things.  IMAP/ICLR handling
-	 * is done by hypervisor calls on sun4v platforms, not by direct
-	 * register accesses.
-	 *
-	 * But we need to make them look unique for the disable_irq() logic
-	 * in free_irq().
-	 */
-	bucket->imap = ~0UL - sysino;
-	bucket->iclr = ~0UL - sysino;
+		cpuid = irq_choose_cpu(virt_irq);
+		imap = data->imap;
 
-	bucket->pil = pil;
-	bucket->flags = flags;
+		tid = sun4u_compute_tid(imap, cpuid);
 
-	bucket->irq_info = kzalloc(sizeof(struct irq_desc), GFP_ATOMIC);
-	if (!bucket->irq_info) {
-		prom_printf("IRQ: Error, kmalloc(irq_desc) failed.\n");
-		prom_halt();
+		upa_writel(tid | IMAP_VALID, imap);
 	}
-
-	return __irq(bucket);
 }
 
-static void atomic_bucket_insert(struct ino_bucket *bucket)
+static void sun4u_irq_disable(unsigned int virt_irq)
 {
-	unsigned long pstate;
-	unsigned int *ent;
+	irq_desc_t *desc = irq_desc + virt_irq;
+	struct irq_handler_data *data = desc->handler_data;
 
-	__asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
-	__asm__ __volatile__("wrpr %0, %1, %%pstate"
-			     : : "r" (pstate), "i" (PSTATE_IE));
-	ent = irq_work(smp_processor_id(), bucket->pil);
-	bucket->irq_chain = *ent;
-	*ent = __irq(bucket);
-	__asm__ __volatile__("wrpr %0, 0x0, %%pstate" : : "r" (pstate));
-}
+	if (likely(data)) {
+		unsigned long imap = data->imap;
+		u32 tmp = upa_readl(imap);
 
-static int check_irq_sharing(int pil, unsigned long irqflags)
-{
-	struct irqaction *action, *tmp;
-
-	action = *(irq_action + pil);
-	if (action) {
-		if ((action->flags & SA_SHIRQ) && (irqflags & SA_SHIRQ)) {
-			for (tmp = action; tmp->next; tmp = tmp->next)
-				;
-		} else {
-			return -EBUSY;
-		}
+		tmp &= ~IMAP_VALID;
+		upa_writel(tmp, imap);
 	}
-	return 0;
 }
 
-static void append_irq_action(int pil, struct irqaction *action)
+static void sun4u_irq_end(unsigned int virt_irq)
 {
-	struct irqaction **pp = irq_action + pil;
+	irq_desc_t *desc = irq_desc + virt_irq;
+	struct irq_handler_data *data = desc->handler_data;
 
-	while (*pp)
-		pp = &((*pp)->next);
-	*pp = action;
+	if (likely(data))
+		upa_writel(ICLR_IDLE, data->iclr);
 }
 
-static struct irqaction *get_action_slot(struct ino_bucket *bucket)
+static void sun4v_irq_enable(unsigned int virt_irq)
 {
-	struct irq_desc *desc = bucket->irq_info;
-	int max_irq, i;
+	struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+	unsigned int ino = bucket - &ivector_table[0];
 
-	max_irq = 1;
-	if (bucket->flags & IBF_PCI)
-		max_irq = MAX_IRQ_DESC_ACTION;
-	for (i = 0; i < max_irq; i++) {
-		struct irqaction *p = &desc->action[i];
-		u32 mask = (1 << i);
+	if (likely(bucket)) {
+		unsigned long cpuid;
+		int err;
 
-		if (desc->action_active_mask & mask)
-			continue;
+		cpuid = irq_choose_cpu(virt_irq);
 
-		desc->action_active_mask |= mask;
-		return p;
+		err = sun4v_intr_settarget(ino, cpuid);
+		if (err != HV_EOK)
+			printk("sun4v_intr_settarget(%x,%lu): err(%d)\n",
+			       ino, cpuid, err);
+		err = sun4v_intr_setenabled(ino, HV_INTR_ENABLED);
+		if (err != HV_EOK)
+			printk("sun4v_intr_setenabled(%x): err(%d)\n",
+			       ino, err);
 	}
-	return NULL;
 }
 
-int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *),
-		unsigned long irqflags, const char *name, void *dev_id)
+static void sun4v_irq_disable(unsigned int virt_irq)
 {
-	struct irqaction *action;
-	struct ino_bucket *bucket = __bucket(irq);
-	unsigned long flags;
-	int pending = 0;
-
-	if (unlikely(!handler))
-		return -EINVAL;
-
-	if (unlikely(!bucket->irq_info))
-		return -ENODEV;
-
-	if ((bucket != &pil0_dummy_bucket) && (irqflags & SA_SAMPLE_RANDOM)) {
-		/*
-	 	 * This function might sleep, we want to call it first,
-	 	 * outside of the atomic block. In SA_STATIC_ALLOC case,
-		 * random driver's kmalloc will fail, but it is safe.
-		 * If already initialized, random driver will not reinit.
-	 	 * Yes, this might clear the entropy pool if the wrong
-	 	 * driver is attempted to be loaded, without actually
-	 	 * installing a new handler, but is this really a problem,
-	 	 * only the sysadmin is able to do this.
-	 	 */
-		rand_initialize_irq(irq);
-	}
-
-	spin_lock_irqsave(&irq_action_lock, flags);
-
-	if (check_irq_sharing(bucket->pil, irqflags)) {
-		spin_unlock_irqrestore(&irq_action_lock, flags);
-		return -EBUSY;
-	}
+	struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+	unsigned int ino = bucket - &ivector_table[0];
 
-	action = get_action_slot(bucket);
-	if (!action) { 
-		spin_unlock_irqrestore(&irq_action_lock, flags);
-		return -ENOMEM;
-	}
+	if (likely(bucket)) {
+		int err;
 
-	bucket->flags |= IBF_ACTIVE;
-	pending = 0;
-	if (bucket != &pil0_dummy_bucket) {
-		pending = bucket->pending;
-		if (pending)
-			bucket->pending = 0;
+		err = sun4v_intr_setenabled(ino, HV_INTR_DISABLED);
+		if (err != HV_EOK)
+			printk("sun4v_intr_setenabled(%x): "
+			       "err(%d)\n", ino, err);
 	}
+}
 
-	action->handler = handler;
-	action->flags = irqflags;
-	action->name = name;
-	action->next = NULL;
-	action->dev_id = dev_id;
-	put_ino_in_irqaction(action, irq);
-	put_smpaff_in_irqaction(action, CPU_MASK_NONE);
-
-	append_irq_action(bucket->pil, action);
+static void sun4v_irq_end(unsigned int virt_irq)
+{
+	struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+	unsigned int ino = bucket - &ivector_table[0];
 
-	enable_irq(irq);
+	if (likely(bucket)) {
+		int err;
 
-	/* We ate the IVEC already, this makes sure it does not get lost. */
-	if (pending) {
-		atomic_bucket_insert(bucket);
-		set_softint(1 << bucket->pil);
+		err = sun4v_intr_setstate(ino, HV_INTR_STATE_IDLE);
+		if (err != HV_EOK)
+			printk("sun4v_intr_setstate(%x): "
+			       "err(%d)\n", ino, err);
 	}
+}
 
-	spin_unlock_irqrestore(&irq_action_lock, flags);
-
-	if (bucket != &pil0_dummy_bucket)
-		register_irq_proc(__irq_ino(irq));
+static void run_pre_handler(unsigned int virt_irq)
+{
+	struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+	irq_desc_t *desc = irq_desc + virt_irq;
+	struct irq_handler_data *data = desc->handler_data;
 
-#ifdef CONFIG_SMP
-	distribute_irqs();
-#endif
-	return 0;
+	if (likely(data->pre_handler)) {
+		data->pre_handler(__irq_ino(__irq(bucket)),
+				  data->pre_handler_arg1,
+				  data->pre_handler_arg2);
+	}
 }
 
-EXPORT_SYMBOL(request_irq);
+static struct hw_interrupt_type sun4u_irq = {
+	.typename	= "sun4u",
+	.enable		= sun4u_irq_enable,
+	.disable	= sun4u_irq_disable,
+	.end		= sun4u_irq_end,
+};
 
-static struct irqaction *unlink_irq_action(unsigned int irq, void *dev_id)
-{
-	struct ino_bucket *bucket = __bucket(irq);
-	struct irqaction *action, **pp;
+static struct hw_interrupt_type sun4u_irq_ack = {
+	.typename	= "sun4u+ack",
+	.enable		= sun4u_irq_enable,
+	.disable	= sun4u_irq_disable,
+	.ack		= run_pre_handler,
+	.end		= sun4u_irq_end,
+};
 
-	pp = irq_action + bucket->pil;
-	action = *pp;
-	if (unlikely(!action))
-		return NULL;
+static struct hw_interrupt_type sun4v_irq = {
+	.typename	= "sun4v",
+	.enable		= sun4v_irq_enable,
+	.disable	= sun4v_irq_disable,
+	.end		= sun4v_irq_end,
+};
 
-	if (unlikely(!action->handler)) {
-		printk("Freeing free IRQ %d\n", bucket->pil);
-		return NULL;
-	}
+static struct hw_interrupt_type sun4v_irq_ack = {
+	.typename	= "sun4v+ack",
+	.enable		= sun4v_irq_enable,
+	.disable	= sun4v_irq_disable,
+	.ack		= run_pre_handler,
+	.end		= sun4v_irq_end,
+};
 
-	while (action && action->dev_id != dev_id) {
-		pp = &action->next;
-		action = *pp;
-	}
+void irq_install_pre_handler(int virt_irq,
+			     void (*func)(unsigned int, void *, void *),
+			     void *arg1, void *arg2)
+{
+	irq_desc_t *desc = irq_desc + virt_irq;
+	struct irq_handler_data *data = desc->handler_data;
 
-	if (likely(action))
-		*pp = action->next;
+	data->pre_handler = func;
+	data->pre_handler_arg1 = arg1;
+	data->pre_handler_arg2 = arg2;
 
-	return action;
+	desc->handler = (desc->handler == &sun4u_irq ?
+			 &sun4u_irq_ack : &sun4v_irq_ack);
 }
 
-void free_irq(unsigned int irq, void *dev_id)
+unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
 {
-	struct irqaction *action;
 	struct ino_bucket *bucket;
-	unsigned long flags;
+	struct irq_handler_data *data;
+	irq_desc_t *desc;
+	int ino;
 
-	spin_lock_irqsave(&irq_action_lock, flags);
+	BUG_ON(tlb_type == hypervisor);
 
-	action = unlink_irq_action(irq, dev_id);
+	ino = (upa_readl(imap) & (IMAP_IGN | IMAP_INO)) + inofixup;
+	bucket = &ivector_table[ino];
+	if (!bucket->virt_irq) {
+		bucket->virt_irq = virt_irq_alloc(__irq(bucket));
+		irq_desc[bucket->virt_irq].handler = &sun4u_irq;
+	}
 
-	spin_unlock_irqrestore(&irq_action_lock, flags);
+	desc = irq_desc + bucket->virt_irq;
+	if (unlikely(desc->handler_data))
+		goto out;
 
-	if (unlikely(!action))
-		return;
+	data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
+	if (unlikely(!data)) {
+		prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
+		prom_halt();
+	}
+	desc->handler_data = data;
 
-	synchronize_irq(irq);
+	data->imap  = imap;
+	data->iclr  = iclr;
 
-	spin_lock_irqsave(&irq_action_lock, flags);
+out:
+	return bucket->virt_irq;
+}
 
-	bucket = __bucket(irq);
-	if (bucket != &pil0_dummy_bucket) {
-		struct irq_desc *desc = bucket->irq_info;
-		int ent, i;
+unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
+{
+	struct ino_bucket *bucket;
+	struct irq_handler_data *data;
+	unsigned long sysino;
+	irq_desc_t *desc;
 
-		for (i = 0; i < MAX_IRQ_DESC_ACTION; i++) {
-			struct irqaction *p = &desc->action[i];
+	BUG_ON(tlb_type != hypervisor);
 
-			if (p == action) {
-				desc->action_active_mask &= ~(1 << i);
-				break;
-			}
-		}
+	sysino = sun4v_devino_to_sysino(devhandle, devino);
+	bucket = &ivector_table[sysino];
+	if (!bucket->virt_irq) {
+		bucket->virt_irq = virt_irq_alloc(__irq(bucket));
+		irq_desc[bucket->virt_irq].handler = &sun4v_irq;
+	}
 
-		if (!desc->action_active_mask) {
-			unsigned long imap = bucket->imap;
-
-			/* This unique interrupt source is now inactive. */
-			bucket->flags &= ~IBF_ACTIVE;
-
-			/* See if any other buckets share this bucket's IMAP
-			 * and are still active.
-			 */
-			for (ent = 0; ent < NUM_IVECS; ent++) {
-				struct ino_bucket *bp = &ivector_table[ent];
-				if (bp != bucket	&&
-				    bp->imap == imap	&&
-				    (bp->flags & IBF_ACTIVE) != 0)
-					break;
-			}
+	desc = irq_desc + bucket->virt_irq;
+	if (unlikely(desc->handler_data))
+		goto out;
 
-			/* Only disable when no other sub-irq levels of
-			 * the same IMAP are active.
-			 */
-			if (ent == NUM_IVECS)
-				disable_irq(irq);
-		}
+	data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
+	if (unlikely(!data)) {
+		prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
+		prom_halt();
 	}
+	desc->handler_data = data;
 
-	spin_unlock_irqrestore(&irq_action_lock, flags);
-}
+	/* Catch accidental accesses to these things.  IMAP/ICLR handling
+	 * is done by hypervisor calls on sun4v platforms, not by direct
+	 * register accesses.
+	 */
+	data->imap = ~0UL;
+	data->iclr = ~0UL;
 
-EXPORT_SYMBOL(free_irq);
+out:
+	return bucket->virt_irq;
+}
 
-#ifdef CONFIG_SMP
-void synchronize_irq(unsigned int irq)
+void hw_resend_irq(struct hw_interrupt_type *handler, unsigned int virt_irq)
 {
-	struct ino_bucket *bucket = __bucket(irq);
-
-#if 0
-	/* The following is how I wish I could implement this.
-	 * Unfortunately the ICLR registers are read-only, you can
-	 * only write ICLR_foo values to them.  To get the current
-	 * IRQ status you would need to get at the IRQ diag registers
-	 * in the PCI/SBUS controller and the layout of those vary
-	 * from one controller to the next, sigh... -DaveM
-	 */
-	unsigned long iclr = bucket->iclr;
-
-	while (1) {
-		u32 tmp = upa_readl(iclr);
-		
-		if (tmp == ICLR_TRANSMIT ||
-		    tmp == ICLR_PENDING) {
-			cpu_relax();
-			continue;
-		}
-		break;
-	}
-#else
-	/* So we have to do this with a INPROGRESS bit just like x86.  */
-	while (bucket->flags & IBF_INPROGRESS)
-		cpu_relax();
-#endif
+	struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+	unsigned long pstate;
+	unsigned int *ent;
+
+	__asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
+	__asm__ __volatile__("wrpr %0, %1, %%pstate"
+			     : : "r" (pstate), "i" (PSTATE_IE));
+	ent = irq_work(smp_processor_id());
+	bucket->irq_chain = *ent;
+	*ent = __irq(bucket);
+	set_softint(1 << PIL_DEVICE_IRQ);
+	__asm__ __volatile__("wrpr %0, 0x0, %%pstate" : : "r" (pstate));
 }
-#endif /* CONFIG_SMP */
 
-static void process_bucket(int irq, struct ino_bucket *bp, struct pt_regs *regs)
+void ack_bad_irq(unsigned int virt_irq)
 {
-	struct irq_desc *desc = bp->irq_info;
-	unsigned char flags = bp->flags;
-	u32 action_mask, i;
-	int random;
+	struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
+	unsigned int ino = 0xdeadbeef;
 
-	bp->flags |= IBF_INPROGRESS;
+	if (bucket)
+		ino = bucket - &ivector_table[0];
 
-	if (unlikely(!(flags & IBF_ACTIVE))) {
-		bp->pending = 1;
-		goto out;
-	}
-
-	if (desc->pre_handler)
-		desc->pre_handler(bp,
-				  desc->pre_handler_arg1,
-				  desc->pre_handler_arg2);
+	printk(KERN_CRIT "Unexpected IRQ from ino[%x] virt_irq[%u]\n",
+	       ino, virt_irq);
+}
 
-	action_mask = desc->action_active_mask;
-	random = 0;
-	for (i = 0; i < MAX_IRQ_DESC_ACTION; i++) {
-		struct irqaction *p = &desc->action[i];
-		u32 mask = (1 << i);
+#ifndef CONFIG_SMP
+extern irqreturn_t timer_interrupt(int, void *, struct pt_regs *);
 
-		if (!(action_mask & mask))
-			continue;
+void timer_irq(int irq, struct pt_regs *regs)
+{
+	unsigned long clr_mask = 1 << irq;
+	unsigned long tick_mask = tick_ops->softint_mask;
 
-		action_mask &= ~mask;
+	if (get_softint() & tick_mask) {
+		irq = 0;
+		clr_mask = tick_mask;
+	}
+	clear_softint(clr_mask);
 
-		if (p->handler(__irq(bp), p->dev_id, regs) == IRQ_HANDLED)
-			random |= p->flags;
+	irq_enter();
 
-		if (!action_mask)
-			break;
-	}
-	if (bp->pil != 0) {
-		if (tlb_type == hypervisor) {
-			unsigned int ino = __irq_ino(bp);
-			int err;
-
-			err = sun4v_intr_setstate(ino, HV_INTR_STATE_IDLE);
-			if (err != HV_EOK)
-				printk("sun4v_intr_setstate(%x): "
-				       "err(%d)\n", ino, err);
-		} else {
-			upa_writel(ICLR_IDLE, bp->iclr);
-		}
+	kstat_this_cpu.irqs[0]++;
+	timer_interrupt(irq, NULL, regs);
 
-		/* Test and add entropy */
-		if (random & SA_SAMPLE_RANDOM)
-			add_interrupt_randomness(irq);
-	}
-out:
-	bp->flags &= ~IBF_INPROGRESS;
+	irq_exit();
 }
+#endif
 
 void handler_irq(int irq, struct pt_regs *regs)
 {
-	struct ino_bucket *bp;
-	int cpu = smp_processor_id();
-
-#ifndef CONFIG_SMP
-	/*
-	 * Check for TICK_INT on level 14 softint.
-	 */
-	{
-		unsigned long clr_mask = 1 << irq;
-		unsigned long tick_mask = tick_ops->softint_mask;
+	struct ino_bucket *bucket;
 
-		if ((irq == 14) && (get_softint() & tick_mask)) {
-			irq = 0;
-			clr_mask = tick_mask;
-		}
-		clear_softint(clr_mask);
-	}
-#else
 	clear_softint(1 << irq);
-#endif
 
 	irq_enter();
-	kstat_this_cpu.irqs[irq]++;
 
 	/* Sliiiick... */
-#ifndef CONFIG_SMP
-	bp = ((irq != 0) ?
-	      __bucket(xchg32(irq_work(cpu, irq), 0)) :
-	      &pil0_dummy_bucket);
-#else
-	bp = __bucket(xchg32(irq_work(cpu, irq), 0));
-#endif
-	while (bp) {
-		struct ino_bucket *nbp = __bucket(bp->irq_chain);
+	bucket = __bucket(xchg32(irq_work(smp_processor_id()), 0));
+	while (bucket) {
+		struct ino_bucket *next = __bucket(bucket->irq_chain);
 
-		bp->irq_chain = 0;
-		process_bucket(irq, bp, regs);
-		bp = nbp;
+		bucket->irq_chain = 0;
+		__do_IRQ(bucket->virt_irq, regs);
+
+		bucket = next;
 	}
+
 	irq_exit();
 }
 
@@ -787,81 +623,6 @@ main_interrupt:
 EXPORT_SYMBOL(sparc_floppy_irq);
 #endif
 
-/* We really don't need these at all on the Sparc.  We only have
- * stubs here because they are exported to modules.
- */
-unsigned long probe_irq_on(void)
-{
-	return 0;
-}
-
-EXPORT_SYMBOL(probe_irq_on);
-
-int probe_irq_off(unsigned long mask)
-{
-	return 0;
-}
-
-EXPORT_SYMBOL(probe_irq_off);
-
-#ifdef CONFIG_SMP
-static int retarget_one_irq(struct irqaction *p, int goal_cpu)
-{
-	struct ino_bucket *bucket = get_ino_in_irqaction(p) + ivector_table;
-
-	while (!cpu_online(goal_cpu)) {
-		if (++goal_cpu >= NR_CPUS)
-			goal_cpu = 0;
-	}
-
-	if (tlb_type == hypervisor) {
-		unsigned int ino = __irq_ino(bucket);
-
-		sun4v_intr_settarget(ino, goal_cpu);
-		sun4v_intr_setenabled(ino, HV_INTR_ENABLED);
-	} else {
-		unsigned long imap = bucket->imap;
-		unsigned int tid = sun4u_compute_tid(imap, goal_cpu);
-
-		upa_writel(tid | IMAP_VALID, imap);
-	}
-
-	do {
-		if (++goal_cpu >= NR_CPUS)
-			goal_cpu = 0;
-	} while (!cpu_online(goal_cpu));
-
-	return goal_cpu;
-}
-
-/* Called from request_irq. */
-static void distribute_irqs(void)
-{
-	unsigned long flags;
-	int cpu, level;
-
-	spin_lock_irqsave(&irq_action_lock, flags);
-	cpu = 0;
-
-	/*
-	 * Skip the timer at [0], and very rare error/power intrs at [15].
-	 * Also level [12], it causes problems on Ex000 systems.
-	 */
-	for (level = 1; level < NR_IRQS; level++) {
-		struct irqaction *p = irq_action[level];
-
-		if (level == 12)
-			continue;
-
-		while(p) {
-			cpu = retarget_one_irq(p, cpu);
-			p = p->next;
-		}
-	}
-	spin_unlock_irqrestore(&irq_action_lock, flags);
-}
-#endif
-
 struct sun5_timer {
 	u64	count0;
 	u64	limit0;
@@ -929,7 +690,7 @@ void init_irqwork_curcpu(void)
 {
 	int cpu = hard_smp_processor_id();
 
-	memset(__irq_work + cpu, 0, sizeof(struct irq_work_struct));
+	trap_block[cpu].irq_worklist = 0;
 }
 
 static void __cpuinit register_one_mondo(unsigned long paddr, unsigned long type)
@@ -1037,6 +798,10 @@ void __cpuinit sun4v_init_mondo_queues(int use_bootmem, int cpu, int alloc, int
 	}
 }
 
+static struct irqaction timer_irq_action = {
+	.name = "timer",
+};
+
 /* Only invoked on boot processor. */
 void __init init_IRQ(void)
 {
@@ -1064,109 +829,6 @@ void __init init_IRQ(void)
 			     : /* No outputs */
 			     : "i" (PSTATE_IE)
 			     : "g1");
-}
 
-static struct proc_dir_entry * root_irq_dir;
-static struct proc_dir_entry * irq_dir [NUM_IVECS];
-
-#ifdef CONFIG_SMP
-
-static int irq_affinity_read_proc (char *page, char **start, off_t off,
-			int count, int *eof, void *data)
-{
-	struct ino_bucket *bp = ivector_table + (long)data;
-	struct irq_desc *desc = bp->irq_info;
-	struct irqaction *ap = desc->action;
-	cpumask_t mask;
-	int len;
-
-	mask = get_smpaff_in_irqaction(ap);
-	if (cpus_empty(mask))
-		mask = cpu_online_map;
-
-	len = cpumask_scnprintf(page, count, mask);
-	if (count - len < 2)
-		return -EINVAL;
-	len += sprintf(page + len, "\n");
-	return len;
-}
-
-static inline void set_intr_affinity(int irq, cpumask_t hw_aff)
-{
-	struct ino_bucket *bp = ivector_table + irq;
-	struct irq_desc *desc = bp->irq_info;
-	struct irqaction *ap = desc->action;
-
-	/* Users specify affinity in terms of hw cpu ids.
-	 * As soon as we do this, handler_irq() might see and take action.
-	 */
-	put_smpaff_in_irqaction(ap, hw_aff);
-
-	/* Migration is simply done by the next cpu to service this
-	 * interrupt.
-	 */
-}
-
-static int irq_affinity_write_proc (struct file *file, const char __user *buffer,
-					unsigned long count, void *data)
-{
-	int irq = (long) data, full_count = count, err;
-	cpumask_t new_value;
-
-	err = cpumask_parse(buffer, count, new_value);
-
-	/*
-	 * Do not allow disabling IRQs completely - it's a too easy
-	 * way to make the system unusable accidentally :-) At least
-	 * one online CPU still has to be targeted.
-	 */
-	cpus_and(new_value, new_value, cpu_online_map);
-	if (cpus_empty(new_value))
-		return -EINVAL;
-
-	set_intr_affinity(irq, new_value);
-
-	return full_count;
+	irq_desc[0].action = &timer_irq_action;
 }
-
-#endif
-
-#define MAX_NAMELEN 10
-
-static void register_irq_proc (unsigned int irq)
-{
-	char name [MAX_NAMELEN];
-
-	if (!root_irq_dir || irq_dir[irq])
-		return;
-
-	memset(name, 0, MAX_NAMELEN);
-	sprintf(name, "%x", irq);
-
-	/* create /proc/irq/1234 */
-	irq_dir[irq] = proc_mkdir(name, root_irq_dir);
-
-#ifdef CONFIG_SMP
-	/* XXX SMP affinity not supported on starfire yet. */
-	if (this_is_starfire == 0) {
-		struct proc_dir_entry *entry;
-
-		/* create /proc/irq/1234/smp_affinity */
-		entry = create_proc_entry("smp_affinity", 0600, irq_dir[irq]);
-
-		if (entry) {
-			entry->nlink = 1;
-			entry->data = (void *)(long)irq;
-			entry->read_proc = irq_affinity_read_proc;
-			entry->write_proc = irq_affinity_write_proc;
-		}
-	}
-#endif
-}
-
-void init_irq_proc (void)
-{
-	/* create /proc/irq */
-	root_irq_dir = proc_mkdir("irq", NULL);
-}
-
diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
index f97ddeb105ac..9472580a4319 100644
--- a/arch/sparc64/kernel/pci.c
+++ b/arch/sparc64/kernel/pci.c
@@ -47,12 +47,6 @@ struct pci_controller_info *pci_controller_root = NULL;
 /* Each PCI controller found gets a unique index. */
 int pci_num_controllers = 0;
 
-/* At boot time the user can give the kernel a command
- * line option which controls if and how PCI devices
- * are reordered at PCI bus probing time.
- */
-int pci_device_reorder = 0;
-
 volatile int pci_poke_in_progress;
 volatile int pci_poke_cpu = -1;
 volatile int pci_poke_faulted;
@@ -316,27 +310,6 @@ static void __init pci_scan_each_controller_bus(void)
 		p->scan_bus(p);
 }
 
-/* Reorder the pci_dev chain, so that onboard devices come first
- * and then come the pluggable cards.
- */
-static void __init pci_reorder_devs(void)
-{
-	struct list_head *pci_onboard = &pci_devices;
-	struct list_head *walk = pci_onboard->next;
-
-	while (walk != pci_onboard) {
-		struct pci_dev *pdev = pci_dev_g(walk);
-		struct list_head *walk_next = walk->next;
-
-		if (pdev->irq && (__irq_ino(pdev->irq) & 0x20)) {
-			list_del(walk);
-			list_add(walk, pci_onboard);
-		}
-
-		walk = walk_next;
-	}
-}
-
 extern void clock_probe(void);
 extern void power_init(void);
 
@@ -348,9 +321,6 @@ static int __init pcibios_init(void)
 
 	pci_scan_each_controller_bus();
 
-	if (pci_device_reorder)
-		pci_reorder_devs();
-
 	isa_init();
 	ebus_init();
 	clock_probe();
@@ -441,14 +411,6 @@ EXPORT_SYMBOL(pcibios_bus_to_resource);
 
 char * __init pcibios_setup(char *str)
 {
-	if (!strcmp(str, "onboardfirst")) {
-		pci_device_reorder = 1;
-		return NULL;
-	}
-	if (!strcmp(str, "noreorder")) {
-		pci_device_reorder = 0;
-		return NULL;
-	}
 	return str;
 }
 
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index d17878b145c2..24db22aa9728 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -276,82 +276,13 @@ static unsigned long __onboard_imap_off[] = {
 	((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) :  \
 			(PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
 
-/* PCI PSYCHO INO number to Sparc PIL level. */
-static unsigned char psycho_pil_table[] = {
-/*0x00*/0, 0, 0, 0,	/* PCI A slot 0  Int A, B, C, D */
-/*0x04*/0, 0, 0, 0,	/* PCI A slot 1  Int A, B, C, D */
-/*0x08*/0, 0, 0, 0,	/* PCI A slot 2  Int A, B, C, D */
-/*0x0c*/0, 0, 0, 0,	/* PCI A slot 3  Int A, B, C, D */
-/*0x10*/0, 0, 0, 0,	/* PCI B slot 0  Int A, B, C, D */
-/*0x14*/0, 0, 0, 0,	/* PCI B slot 1  Int A, B, C, D */
-/*0x18*/0, 0, 0, 0,	/* PCI B slot 2  Int A, B, C, D */
-/*0x1c*/0, 0, 0, 0,	/* PCI B slot 3  Int A, B, C, D */
-/*0x20*/5,		/* SCSI				*/
-/*0x21*/5,		/* Ethernet			*/
-/*0x22*/8,		/* Parallel Port		*/
-/*0x23*/13,		/* Audio Record			*/
-/*0x24*/14,		/* Audio Playback		*/
-/*0x25*/15,		/* PowerFail			*/
-/*0x26*/5,		/* second SCSI			*/
-/*0x27*/11,		/* Floppy			*/
-/*0x28*/5,		/* Spare Hardware		*/
-/*0x29*/9,		/* Keyboard			*/
-/*0x2a*/5,		/* Mouse			*/
-/*0x2b*/12,		/* Serial			*/
-/*0x2c*/10,		/* Timer 0			*/
-/*0x2d*/11,		/* Timer 1			*/
-/*0x2e*/15,		/* Uncorrectable ECC		*/
-/*0x2f*/15,		/* Correctable ECC		*/
-/*0x30*/15,		/* PCI Bus A Error		*/
-/*0x31*/15,		/* PCI Bus B Error		*/
-/*0x32*/15,		/* Power Management		*/
-};
-
-static int psycho_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
-{
-	int ret;
-
-	ret = psycho_pil_table[ino];
-	if (ret == 0 && pdev == NULL) {
-		ret = 5;
-	} else if (ret == 0) {
-		switch ((pdev->class >> 16) & 0xff) {
-		case PCI_BASE_CLASS_STORAGE:
-			ret = 5;
-			break;
-
-		case PCI_BASE_CLASS_NETWORK:
-			ret = 6;
-			break;
-
-		case PCI_BASE_CLASS_DISPLAY:
-			ret = 9;
-			break;
-
-		case PCI_BASE_CLASS_MULTIMEDIA:
-		case PCI_BASE_CLASS_MEMORY:
-		case PCI_BASE_CLASS_BRIDGE:
-		case PCI_BASE_CLASS_SERIAL:
-			ret = 10;
-			break;
-
-		default:
-			ret = 5;
-			break;
-		};
-	}
-
-	return ret;
-}
-
 static unsigned int psycho_irq_build(struct pci_pbm_info *pbm,
 				     struct pci_dev *pdev,
 				     unsigned int ino)
 {
-	struct ino_bucket *bucket;
 	unsigned long imap, iclr;
 	unsigned long imap_off, iclr_off;
-	int pil, inofixup = 0;
+	int inofixup = 0;
 
 	ino &= PCI_IRQ_INO;
 	if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
@@ -367,11 +298,6 @@ static unsigned int psycho_irq_build(struct pci_pbm_info *pbm,
 	}
 
 	/* Now build the IRQ bucket. */
-	pil = psycho_ino_to_pil(pdev, ino);
-
-	if (PIL_RESERVED(pil))
-		BUG();
-
 	imap = pbm->controller_regs + imap_off;
 	imap += 4;
 
@@ -382,10 +308,7 @@ static unsigned int psycho_irq_build(struct pci_pbm_info *pbm,
 	if ((ino & 0x20) == 0)
 		inofixup = ino & 0x03;
 
-	bucket = __bucket(build_irq(pil, inofixup, iclr, imap));
-	bucket->flags |= IBF_PCI;
-
-	return __irq(bucket);
+	return build_irq(inofixup, iclr, imap);
 }
 
 /* PSYCHO error handling support. */
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index f67bb7f078cf..b7d997b55f0a 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -523,78 +523,6 @@ static unsigned long __onboard_imap_off[] = {
 	((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) :  \
 			(SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
 
-/* PCI SABRE INO number to Sparc PIL level. */
-static unsigned char sabre_pil_table[] = {
-/*0x00*/0, 0, 0, 0,	/* PCI A slot 0  Int A, B, C, D */
-/*0x04*/0, 0, 0, 0,	/* PCI A slot 1  Int A, B, C, D */
-/*0x08*/0, 0, 0, 0,	/* PCI A slot 2  Int A, B, C, D */
-/*0x0c*/0, 0, 0, 0,	/* PCI A slot 3  Int A, B, C, D */
-/*0x10*/0, 0, 0, 0,	/* PCI B slot 0  Int A, B, C, D */
-/*0x14*/0, 0, 0, 0,	/* PCI B slot 1  Int A, B, C, D */
-/*0x18*/0, 0, 0, 0,	/* PCI B slot 2  Int A, B, C, D */
-/*0x1c*/0, 0, 0, 0,	/* PCI B slot 3  Int A, B, C, D */
-/*0x20*/5,		/* SCSI				*/
-/*0x21*/5,		/* Ethernet			*/
-/*0x22*/8,		/* Parallel Port		*/
-/*0x23*/13,		/* Audio Record			*/
-/*0x24*/14,		/* Audio Playback		*/
-/*0x25*/15,		/* PowerFail			*/
-/*0x26*/5,		/* second SCSI			*/
-/*0x27*/11,		/* Floppy			*/
-/*0x28*/5,		/* Spare Hardware		*/
-/*0x29*/9,		/* Keyboard			*/
-/*0x2a*/5,		/* Mouse			*/
-/*0x2b*/12,		/* Serial			*/
-/*0x2c*/10,		/* Timer 0			*/
-/*0x2d*/11,		/* Timer 1			*/
-/*0x2e*/15,		/* Uncorrectable ECC		*/
-/*0x2f*/15,		/* Correctable ECC		*/
-/*0x30*/15,		/* PCI Bus A Error		*/
-/*0x31*/15,		/* PCI Bus B Error		*/
-/*0x32*/15,		/* Power Management		*/
-};
-
-static int sabre_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
-{
-	int ret;
-
-	if (pdev &&
-	    pdev->vendor == PCI_VENDOR_ID_SUN &&
-	    pdev->device == PCI_DEVICE_ID_SUN_RIO_USB)
-		return 9;
-
-	ret = sabre_pil_table[ino];
-	if (ret == 0 && pdev == NULL) {
-		ret = 5;
-	} else if (ret == 0) {
-		switch ((pdev->class >> 16) & 0xff) {
-		case PCI_BASE_CLASS_STORAGE:
-			ret = 5;
-			break;
-
-		case PCI_BASE_CLASS_NETWORK:
-			ret = 6;
-			break;
-
-		case PCI_BASE_CLASS_DISPLAY:
-			ret = 9;
-			break;
-
-		case PCI_BASE_CLASS_MULTIMEDIA:
-		case PCI_BASE_CLASS_MEMORY:
-		case PCI_BASE_CLASS_BRIDGE:
-		case PCI_BASE_CLASS_SERIAL:
-			ret = 10;
-			break;
-
-		default:
-			ret = 5;
-			break;
-		};
-	}
-	return ret;
-}
-
 /* When a device lives behind a bridge deeper in the PCI bus topology
  * than APB, a special sequence must run to make sure all pending DMA
  * transfers at the time of IRQ delivery are visible in the coherency
@@ -602,7 +530,7 @@ static int sabre_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
  * side of the non-APB bridge, then perform a read of Sabre's DMA
  * write-sync register.
  */
-static void sabre_wsync_handler(struct ino_bucket *bucket, void *_arg1, void *_arg2)
+static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
 {
 	struct pci_dev *pdev = _arg1;
 	unsigned long sync_reg = (unsigned long) _arg2;
@@ -616,10 +544,10 @@ static unsigned int sabre_irq_build(struct pci_pbm_info *pbm,
 				    struct pci_dev *pdev,
 				    unsigned int ino)
 {
-	struct ino_bucket *bucket;
 	unsigned long imap, iclr;
 	unsigned long imap_off, iclr_off;
-	int pil, inofixup = 0;
+	int inofixup = 0;
+	int virt_irq;
 
 	ino &= PCI_IRQ_INO;
 	if (ino < SABRE_ONBOARD_IRQ_BASE) {
@@ -635,11 +563,6 @@ static unsigned int sabre_irq_build(struct pci_pbm_info *pbm,
 	}
 
 	/* Now build the IRQ bucket. */
-	pil = sabre_ino_to_pil(pdev, ino);
-
-	if (PIL_RESERVED(pil))
-		BUG();
-
 	imap = pbm->controller_regs + imap_off;
 	imap += 4;
 
@@ -650,23 +573,23 @@ static unsigned int sabre_irq_build(struct pci_pbm_info *pbm,
 	if ((ino & 0x20) == 0)
 		inofixup = ino & 0x03;
 
-	bucket = __bucket(build_irq(pil, inofixup, iclr, imap));
-	bucket->flags |= IBF_PCI;
+	virt_irq = build_irq(inofixup, iclr, imap);
 
 	if (pdev) {
 		struct pcidev_cookie *pcp = pdev->sysdata;
 
 		if (pdev->bus->number != pcp->pbm->pci_first_busno) {
 			struct pci_controller_info *p = pcp->pbm->parent;
-			struct irq_desc *d = bucket->irq_info;
 
-			d->pre_handler = sabre_wsync_handler;
-			d->pre_handler_arg1 = pdev;
-			d->pre_handler_arg2 = (void *)
-				p->pbm_A.controller_regs + SABRE_WRSYNC;
+			irq_install_pre_handler(virt_irq,
+						sabre_wsync_handler,
+						pdev,
+						(void *)
+						p->pbm_A.controller_regs +
+						SABRE_WRSYNC);
 		}
 	}
-	return __irq(bucket);
+	return virt_irq;
 }
 
 /* SABRE error handling support. */
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c
index 7fe4de03ac2e..cc662e915d32 100644
--- a/arch/sparc64/kernel/pci_schizo.c
+++ b/arch/sparc64/kernel/pci_schizo.c
@@ -232,105 +232,10 @@ static unsigned long schizo_iclr_offset(unsigned long ino)
 	return SCHIZO_ICLR_BASE + (ino * 8UL);
 }
 
-/* PCI SCHIZO INO number to Sparc PIL level.  This table only matters for
- * INOs which will not have an associated PCI device struct, ie. onboard
- * EBUS devices and PCI controller internal error interrupts.
- */
-static unsigned char schizo_pil_table[] = {
-/*0x00*/0, 0, 0, 0,	/* PCI slot 0  Int A, B, C, D	*/
-/*0x04*/0, 0, 0, 0,	/* PCI slot 1  Int A, B, C, D	*/
-/*0x08*/0, 0, 0, 0,	/* PCI slot 2  Int A, B, C, D	*/
-/*0x0c*/0, 0, 0, 0,	/* PCI slot 3  Int A, B, C, D	*/
-/*0x10*/0, 0, 0, 0,	/* PCI slot 4  Int A, B, C, D	*/
-/*0x14*/0, 0, 0, 0,	/* PCI slot 5  Int A, B, C, D	*/
-/*0x18*/5,		/* SCSI				*/
-/*0x19*/5,		/* second SCSI			*/
-/*0x1a*/0,		/* UNKNOWN			*/
-/*0x1b*/0,		/* UNKNOWN			*/
-/*0x1c*/8,		/* Parallel			*/
-/*0x1d*/5,		/* Ethernet			*/
-/*0x1e*/8,		/* Firewire-1394		*/
-/*0x1f*/9,		/* USB				*/
-/*0x20*/13,		/* Audio Record			*/
-/*0x21*/14,		/* Audio Playback		*/
-/*0x22*/12,		/* Serial			*/
-/*0x23*/5,		/* EBUS I2C 			*/
-/*0x24*/10,		/* RTC Clock			*/
-/*0x25*/11,		/* Floppy			*/
-/*0x26*/0,		/* UNKNOWN			*/
-/*0x27*/0,		/* UNKNOWN			*/
-/*0x28*/0,		/* UNKNOWN			*/
-/*0x29*/0,		/* UNKNOWN			*/
-/*0x2a*/10,		/* UPA 1			*/
-/*0x2b*/10,		/* UPA 2			*/
-/*0x2c*/0,		/* UNKNOWN			*/
-/*0x2d*/0,		/* UNKNOWN			*/
-/*0x2e*/0,		/* UNKNOWN			*/
-/*0x2f*/0,		/* UNKNOWN			*/
-/*0x30*/15,		/* Uncorrectable ECC		*/
-/*0x31*/15,		/* Correctable ECC		*/
-/*0x32*/15,		/* PCI Bus A Error		*/
-/*0x33*/15,		/* PCI Bus B Error		*/
-/*0x34*/15,		/* Safari Bus Error		*/
-/*0x35*/0,		/* Reserved			*/
-/*0x36*/0,		/* Reserved			*/
-/*0x37*/0,		/* Reserved			*/
-/*0x38*/0,		/* Reserved for NewLink		*/
-/*0x39*/0,		/* Reserved for NewLink		*/
-/*0x3a*/0,		/* Reserved for NewLink		*/
-/*0x3b*/0,		/* Reserved for NewLink		*/
-/*0x3c*/0,		/* Reserved for NewLink		*/
-/*0x3d*/0,		/* Reserved for NewLink		*/
-/*0x3e*/0,		/* Reserved for NewLink		*/
-/*0x3f*/0,		/* Reserved for NewLink		*/
-};
-
-static int schizo_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
-{
-	int ret;
-
-	if (pdev &&
-	    pdev->vendor == PCI_VENDOR_ID_SUN &&
-	    pdev->device == PCI_DEVICE_ID_SUN_RIO_USB)
-		return 9;
-
-	ret = schizo_pil_table[ino];
-	if (ret == 0 && pdev == NULL) {
-		ret = 5;
-	} else if (ret == 0) {
-		switch ((pdev->class >> 16) & 0xff) {
-		case PCI_BASE_CLASS_STORAGE:
-			ret = 5;
-			break;
-
-		case PCI_BASE_CLASS_NETWORK:
-			ret = 6;
-			break;
-
-		case PCI_BASE_CLASS_DISPLAY:
-			ret = 9;
-			break;
-
-		case PCI_BASE_CLASS_MULTIMEDIA:
-		case PCI_BASE_CLASS_MEMORY:
-		case PCI_BASE_CLASS_BRIDGE:
-		case PCI_BASE_CLASS_SERIAL:
-			ret = 10;
-			break;
-
-		default:
-			ret = 5;
-			break;
-		};
-	}
-
-	return ret;
-}
-
-static void tomatillo_wsync_handler(struct ino_bucket *bucket, void *_arg1, void *_arg2)
+static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
 {
 	unsigned long sync_reg = (unsigned long) _arg2;
-	u64 mask = 1UL << (__irq_ino(__irq(bucket)) & IMAP_INO);
+	u64 mask = 1UL << (ino & IMAP_INO);
 	u64 val;
 	int limit;
 
@@ -365,30 +270,33 @@ static void tomatillo_wsync_handler(struct ino_bucket *bucket, void *_arg1, void
 	}
 }
 
+static unsigned long schizo_ino_to_iclr(struct pci_pbm_info *pbm,
+					unsigned int ino)
+{
+	ino &= PCI_IRQ_INO;
+	return pbm->pbm_regs + schizo_iclr_offset(ino) + 4;
+}
+
+static unsigned long schizo_ino_to_imap(struct pci_pbm_info *pbm,
+					unsigned int ino)
+{
+	ino &= PCI_IRQ_INO;
+	return pbm->pbm_regs + schizo_imap_offset(ino) + 4;
+}
+
 static unsigned int schizo_irq_build(struct pci_pbm_info *pbm,
 				     struct pci_dev *pdev,
 				     unsigned int ino)
 {
-	struct ino_bucket *bucket;
 	unsigned long imap, iclr;
-	unsigned long imap_off, iclr_off;
-	int pil, ign_fixup;
+	int ign_fixup;
+	int virt_irq;
 
 	ino &= PCI_IRQ_INO;
-	imap_off = schizo_imap_offset(ino);
 
 	/* Now build the IRQ bucket. */
-	pil = schizo_ino_to_pil(pdev, ino);
-
-	if (PIL_RESERVED(pil))
-		BUG();
-
-	imap = pbm->pbm_regs + imap_off;
-	imap += 4;
-
-	iclr_off = schizo_iclr_offset(ino);
-	iclr = pbm->pbm_regs + iclr_off;
-	iclr += 4;
+	imap = schizo_ino_to_imap(pbm, ino);
+	iclr = schizo_ino_to_iclr(pbm, ino);
 
 	/* On Schizo, no inofixup occurs.  This is because each
 	 * INO has it's own IMAP register.  On Psycho and Sabre
@@ -405,19 +313,17 @@ static unsigned int schizo_irq_build(struct pci_pbm_info *pbm,
 			ign_fixup = (1 << 6);
 	}
 
-	bucket = __bucket(build_irq(pil, ign_fixup, iclr, imap));
-	bucket->flags |= IBF_PCI;
+	virt_irq = build_irq(ign_fixup, iclr, imap);
 
 	if (pdev && pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
-		struct irq_desc *p = bucket->irq_info;
-
-		p->pre_handler = tomatillo_wsync_handler;
-		p->pre_handler_arg1 = ((pbm->chip_version <= 4) ?
-				       (void *) 1 : (void *) 0);
-		p->pre_handler_arg2 = (void *) pbm->sync_reg;
+		irq_install_pre_handler(virt_irq,
+					tomatillo_wsync_handler,
+					((pbm->chip_version <= 4) ?
+					 (void *) 1 : (void *) 0),
+					(void *) pbm->sync_reg);
 	}
 
-	return __irq(bucket);
+	return virt_irq;
 }
 
 /* SCHIZO error handling support. */
@@ -458,7 +364,6 @@ struct pci_pbm_info *pbm_for_ino(struct pci_controller_info *p, u32 ino)
 static void schizo_clear_other_err_intr(struct pci_controller_info *p, int irq)
 {
 	struct pci_pbm_info *pbm;
-	struct ino_bucket *bucket;
 	unsigned long iclr;
 
 	/* Do not clear the interrupt for the other PCI bus.
@@ -476,11 +381,11 @@ static void schizo_clear_other_err_intr(struct pci_controller_info *p, int irq)
 	else
 		pbm = &p->pbm_A;
 
-	irq = schizo_irq_build(pbm, NULL,
-			       (pbm->portid << 6) | (irq & IMAP_INO));
-	bucket = __bucket(irq);
-	iclr = bucket->iclr;
+	schizo_irq_build(pbm, NULL,
+			 (pbm->portid << 6) | (irq & IMAP_INO));
 
+	iclr = schizo_ino_to_iclr(pbm,
+				  (pbm->portid << 6) | (irq & IMAP_INO));
 	upa_writel(ICLR_IDLE, iclr);
 }
 
@@ -1225,7 +1130,6 @@ static void tomatillo_register_error_handlers(struct pci_controller_info *p)
 {
 	struct pci_pbm_info *pbm;
 	unsigned int irq;
-	struct ino_bucket *bucket;
 	u64 tmp, err_mask, err_no_mask;
 
 	/* Build IRQs and register handlers. */
@@ -1237,8 +1141,7 @@ static void tomatillo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, (pbm->portid << 6) | SCHIZO_UE_INO));
 	upa_writel(tmp, (pbm->pbm_regs +
 			 schizo_imap_offset(SCHIZO_UE_INO) + 4));
 
@@ -1250,8 +1153,7 @@ static void tomatillo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, (pbm->portid << 6) | SCHIZO_CE_INO));
 	upa_writel(tmp, (pbm->pbm_regs +
 			 schizo_imap_offset(SCHIZO_CE_INO) + 4));
 
@@ -1264,8 +1166,8 @@ static void tomatillo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, ((pbm->portid << 6) |
+						 SCHIZO_PCIERR_A_INO)));
 	upa_writel(tmp, (pbm->pbm_regs +
 			 schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4));
 
@@ -1278,8 +1180,8 @@ static void tomatillo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, ((pbm->portid << 6) |
+						 SCHIZO_PCIERR_B_INO)));
 	upa_writel(tmp, (pbm->pbm_regs +
 			 schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4));
 
@@ -1291,8 +1193,8 @@ static void tomatillo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, ((pbm->portid << 6) |
+						 SCHIZO_SERR_INO)));
 	upa_writel(tmp, (pbm->pbm_regs +
 			 schizo_imap_offset(SCHIZO_SERR_INO) + 4));
 
@@ -1363,7 +1265,6 @@ static void schizo_register_error_handlers(struct pci_controller_info *p)
 {
 	struct pci_pbm_info *pbm;
 	unsigned int irq;
-	struct ino_bucket *bucket;
 	u64 tmp, err_mask, err_no_mask;
 
 	/* Build IRQs and register handlers. */
@@ -1375,8 +1276,7 @@ static void schizo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, (pbm->portid << 6) | SCHIZO_UE_INO));
 	upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_UE_INO) + 4));
 
 	pbm = pbm_for_ino(p, SCHIZO_CE_INO);
@@ -1387,8 +1287,7 @@ static void schizo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, (pbm->portid << 6) | SCHIZO_CE_INO));
 	upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_CE_INO) + 4));
 
 	pbm = pbm_for_ino(p, SCHIZO_PCIERR_A_INO);
@@ -1399,8 +1298,7 @@ static void schizo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, (pbm->portid << 6) | SCHIZO_PCIERR_A_INO));
 	upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4));
 
 	pbm = pbm_for_ino(p, SCHIZO_PCIERR_B_INO);
@@ -1411,8 +1309,7 @@ static void schizo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, (pbm->portid << 6) | SCHIZO_PCIERR_B_INO));
 	upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4));
 
 	pbm = pbm_for_ino(p, SCHIZO_SERR_INO);
@@ -1423,8 +1320,7 @@ static void schizo_register_error_handlers(struct pci_controller_info *p)
 			    pbm->name);
 		prom_halt();
 	}
-	bucket = __bucket(irq);
-	tmp = upa_readl(bucket->imap);
+	tmp = upa_readl(schizo_ino_to_imap(pbm, (pbm->portid << 6) | SCHIZO_SERR_INO));
 	upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_SERR_INO) + 4));
 
 	/* Enable UE and CE interrupts for controller. */
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index 0c0895202970..5419480edf41 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -843,38 +843,8 @@ static unsigned int pci_sun4v_irq_build(struct pci_pbm_info *pbm,
 					unsigned int devino)
 {
 	u32 devhandle = pbm->devhandle;
-	int pil;
 
-	pil = 5;
-	if (pdev) {
-		switch ((pdev->class >> 16) & 0xff) {
-		case PCI_BASE_CLASS_STORAGE:
-			pil = 5;
-			break;
-
-		case PCI_BASE_CLASS_NETWORK:
-			pil = 6;
-			break;
-
-		case PCI_BASE_CLASS_DISPLAY:
-			pil = 9;
-			break;
-
-		case PCI_BASE_CLASS_MULTIMEDIA:
-		case PCI_BASE_CLASS_MEMORY:
-		case PCI_BASE_CLASS_BRIDGE:
-		case PCI_BASE_CLASS_SERIAL:
-			pil = 10;
-			break;
-
-		default:
-			pil = 5;
-			break;
-		};
-	}
-	BUG_ON(PIL_RESERVED(pil));
-
-	return sun4v_build_irq(devhandle, devino, pil, IBF_PCI);
+	return sun4v_build_irq(devhandle, devino);
 }
 
 static void pci_sun4v_base_address_update(struct pci_dev *pdev, int resource)
diff --git a/arch/sparc64/kernel/sbus.c b/arch/sparc64/kernel/sbus.c
index 1d6ffdeabd4c..8812417247d4 100644
--- a/arch/sparc64/kernel/sbus.c
+++ b/arch/sparc64/kernel/sbus.c
@@ -691,36 +691,6 @@ void sbus_set_sbus64(struct sbus_dev *sdev, int bursts)
 	upa_writeq(val, cfg_reg);
 }
 
-/* SBUS SYSIO INO number to Sparc PIL level. */
-static unsigned char sysio_ino_to_pil[] = {
-	0, 5, 5, 7, 5, 7, 8, 9,		/* SBUS slot 0 */
-	0, 5, 5, 7, 5, 7, 8, 9,		/* SBUS slot 1 */
-	0, 5, 5, 7, 5, 7, 8, 9,		/* SBUS slot 2 */
-	0, 5, 5, 7, 5, 7, 8, 9,		/* SBUS slot 3 */
-	5, /* Onboard SCSI */
-	5, /* Onboard Ethernet */
-/*XXX*/	8, /* Onboard BPP */
-	0, /* Bogon */
-       13, /* Audio */
-/*XXX*/15, /* PowerFail */
-	0, /* Bogon */
-	0, /* Bogon */
-       12, /* Zilog Serial Channels (incl. Keyboard/Mouse lines) */
-       11, /* Floppy */
-	0, /* Spare Hardware (bogon for now) */
-	0, /* Keyboard (bogon for now) */
-	0, /* Mouse (bogon for now) */
-	0, /* Serial (bogon for now) */
-     0, 0, /* Bogon, Bogon */
-       10, /* Timer 0 */
-       11, /* Timer 1 */
-     0, 0, /* Bogon, Bogon */
-       15, /* Uncorrectable SBUS Error */
-       15, /* Correctable SBUS Error */
-       15, /* SBUS Error */
-/*XXX*/ 0, /* Power Management (bogon for now) */
-};
-
 /* INO number to IMAP register offset for SYSIO external IRQ's.
  * This should conform to both Sunfire/Wildfire server and Fusion
  * desktop designs.
@@ -812,21 +782,12 @@ unsigned int sbus_build_irq(void *buscookie, unsigned int ino)
 	struct sbus_iommu *iommu = sbus->iommu;
 	unsigned long reg_base = iommu->sbus_control_reg - 0x2000UL;
 	unsigned long imap, iclr;
-	int pil, sbus_level = 0;
-
-	pil = sysio_ino_to_pil[ino];
-	if (!pil) {
-		printk("sbus_irq_build: Bad SYSIO INO[%x]\n", ino);
-		panic("Bad SYSIO IRQ translations...");
-	}
-
-	if (PIL_RESERVED(pil))
-		BUG();
+	int sbus_level = 0;
 
 	imap = sysio_irq_offsets[ino];
 	if (imap == ((unsigned long)-1)) {
-		prom_printf("get_irq_translations: Bad SYSIO INO[%x] cpu[%d]\n",
-			    ino, pil);
+		prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
+			    ino);
 		prom_halt();
 	}
 	imap += reg_base;
@@ -860,7 +821,7 @@ unsigned int sbus_build_irq(void *buscookie, unsigned int ino)
 
 		iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
 	}
-	return build_irq(pil, sbus_level, iclr, imap);
+	return build_irq(sbus_level, iclr, imap);
 }
 
 /* Error interrupt handling. */
diff --git a/arch/sparc64/kernel/sparc64_ksyms.c b/arch/sparc64/kernel/sparc64_ksyms.c
index 38e569f786dd..4ac35dd2088b 100644
--- a/arch/sparc64/kernel/sparc64_ksyms.c
+++ b/arch/sparc64/kernel/sparc64_ksyms.c
@@ -125,9 +125,6 @@ EXPORT_SYMBOL(__write_lock);
 EXPORT_SYMBOL(__write_unlock);
 EXPORT_SYMBOL(__write_trylock);
 
-/* Hard IRQ locking */
-EXPORT_SYMBOL(synchronize_irq);
-
 #if defined(CONFIG_MCOUNT)
 extern void _mcount(void);
 EXPORT_SYMBOL(_mcount);
@@ -175,10 +172,6 @@ EXPORT_SYMBOL(set_bit);
 EXPORT_SYMBOL(clear_bit);
 EXPORT_SYMBOL(change_bit);
 
-EXPORT_SYMBOL(ivector_table);
-EXPORT_SYMBOL(enable_irq);
-EXPORT_SYMBOL(disable_irq);
-
 EXPORT_SYMBOL(__flushw_user);
 
 EXPORT_SYMBOL(tlb_type);
diff --git a/arch/sparc64/kernel/sun4v_ivec.S b/arch/sparc64/kernel/sun4v_ivec.S
index b49a68bdda43..49703c3c5769 100644
--- a/arch/sparc64/kernel/sun4v_ivec.S
+++ b/arch/sparc64/kernel/sun4v_ivec.S
@@ -5,6 +5,7 @@
 
 #include <asm/cpudata.h>
 #include <asm/intr_queue.h>
+#include <asm/pil.h>
 
 	.text
 	.align	32
@@ -102,23 +103,17 @@ sun4v_dev_mondo:
 
 	/* Get &ivector_table[IVEC] into %g4.  */
 	sethi	%hi(ivector_table), %g4
-	sllx	%g3, 5, %g3
+	sllx	%g3, 3, %g3
 	or	%g4, %lo(ivector_table), %g4
 	add	%g4, %g3, %g4
 
-	/* Load IRQ %pil into %g5.  */
-	ldub	[%g4 + 0x04], %g5
-
 	/* Insert ivector_table[] entry into __irq_work[] queue.  */
-	sllx	%g5, 2, %g3
-	lduw	[%g1 + %g3], %g2	/* g2 = irq_work(cpu, pil) */
+	lduw	[%g1], %g2		/* g2 = irq_work(cpu) */
 	stw	%g2, [%g4 + 0x00]	/* bucket->irq_chain = g2 */
-	stw	%g4, [%g1 + %g3]	/* irq_work(cpu, pil) = bucket */
+	stw	%g4, [%g1]		/* irq_work(cpu) = bucket */
 
 	/* Signal the interrupt by setting (1 << pil) in %softint.  */
-	mov	1, %g2
-	sllx	%g2, %g5, %g2
-	wr	%g2, 0x0, %set_softint
+	wr	%g0, 1 << PIL_DEVICE_IRQ, %set_softint
 
 sun4v_dev_mondo_queue_empty:
 	retry
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index e55b5c6ece02..0f00a99927e9 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -457,7 +457,7 @@ static inline void timer_check_rtc(void)
 	}
 }
 
-static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
 {
 	unsigned long ticks, compare, pstate;
 
@@ -1020,19 +1020,9 @@ static unsigned long sparc64_init_timers(void)
 	return clock;
 }
 
-static void sparc64_start_timers(irqreturn_t (*cfunc)(int, void *, struct pt_regs *))
+static void sparc64_start_timers(void)
 {
 	unsigned long pstate;
-	int err;
-
-	/* Register IRQ handler. */
-	err = request_irq(build_irq(0, 0, 0UL, 0UL), cfunc, 0,
-			  "timer", NULL);
-
-	if (err) {
-		prom_printf("Serious problem, cannot register TICK_INT\n");
-		prom_halt();
-	}
 
 	/* Guarantee that the following sequences execute
 	 * uninterrupted.
@@ -1116,7 +1106,7 @@ void __init time_init(void)
 	/* Now that the interpolator is registered, it is
 	 * safe to start the timer ticking.
 	 */
-	sparc64_start_timers(timer_interrupt);
+	sparc64_start_timers();
 
 	timer_ticks_per_nsec_quotient =
 		(((NSEC_PER_SEC << SPARC64_NSEC_PER_CYC_SHIFT) +
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index 563db528e031..5059cbd4feee 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -2544,7 +2544,9 @@ void __init trap_init(void)
 	    (TRAP_PER_CPU_TSB_HUGE !=
 	     offsetof(struct trap_per_cpu, tsb_huge)) ||
 	    (TRAP_PER_CPU_TSB_HUGE_TEMP !=
-	     offsetof(struct trap_per_cpu, tsb_huge_temp)))
+	     offsetof(struct trap_per_cpu, tsb_huge_temp)) ||
+	    (TRAP_PER_CPU_IRQ_WORKLIST !=
+	     offsetof(struct trap_per_cpu, irq_worklist)))
 		trap_per_cpu_offsets_are_bolixed_dave();
 
 	if ((TSB_CONFIG_TSB !=
diff --git a/arch/sparc64/kernel/ttable.S b/arch/sparc64/kernel/ttable.S
index 5d901519db55..ee45ca2d7a04 100644
--- a/arch/sparc64/kernel/ttable.S
+++ b/arch/sparc64/kernel/ttable.S
@@ -58,13 +58,11 @@ tl0_irq2:	BTRAP(0x42)
 tl0_irq3:	BTRAP(0x43)
 tl0_irq4:	BTRAP(0x44)
 #endif
-tl0_irq5:	TRAP_IRQ(handler_irq, 5)  TRAP_IRQ(handler_irq, 6)
-tl0_irq7:	TRAP_IRQ(handler_irq, 7)  TRAP_IRQ(handler_irq, 8)
-tl0_irq9:	TRAP_IRQ(handler_irq, 9)  TRAP_IRQ(handler_irq, 10)
-tl0_irq11:	TRAP_IRQ(handler_irq, 11) TRAP_IRQ(handler_irq, 12)
-tl0_irq13:	TRAP_IRQ(handler_irq, 13)
+tl0_irq5:	TRAP_IRQ(handler_irq, 5)
+tl0_irq6:	BTRAP(0x46) BTRAP(0x47) BTRAP(0x48) BTRAP(0x49)
+tl0_irq10:	BTRAP(0x4a) BTRAP(0x4b) BTRAP(0x4c) BTRAP(0x4d)
 #ifndef CONFIG_SMP
-tl0_irq14:	TRAP_IRQ(handler_irq, 14)
+tl0_irq14:	TRAP_IRQ(timer_irq, 14)
 #else
 tl0_irq14:	TICK_SMP_IRQ
 #endif