sparc: Move irq_trans_init() and support code into seperate file.

All sparc64 specific, so only build this file on sparc64.

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 847 insertions, 830 deletions

diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index d0d63b1ab02..04c74d00f83 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -38,6 +38,7 @@ obj-$(CONFIG_SPARC32)   += muldiv.o
 obj-y                   += prom_common.o
 obj-y                   += prom_$(BITS).o
 obj-y                   += of_device_$(BITS).o
+obj-$(CONFIG_SPARC64)   += prom_irqtrans.o
 
 obj-$(CONFIG_SPARC64)   += reboot.o
 obj-$(CONFIG_SPARC64)   += sysfs.o
diff --git a/arch/sparc/kernel/prom.h b/arch/sparc/kernel/prom.h
index b7258ce87cc..49925101f8f 100644
--- a/arch/sparc/kernel/prom.h
+++ b/arch/sparc/kernel/prom.h
@@ -9,4 +9,8 @@ extern rwlock_t devtree_lock;	/* temporary while merging */
 
 extern void * prom_early_alloc(unsigned long size);
 
+#ifdef CONFIG_SPARC64
+extern void irq_trans_init(struct device_node *dp);
+#endif
+
 #endif /* __PROM_H */
diff --git a/arch/sparc/kernel/prom_64.c b/arch/sparc/kernel/prom_64.c
index 1c7b9d7b788..d745b9f44d2 100644
--- a/arch/sparc/kernel/prom_64.c
+++ b/arch/sparc/kernel/prom_64.c
@@ -51,836 +51,6 @@ void * __init prom_early_alloc(unsigned long size)
 	return ret;
 }
 
-#ifdef CONFIG_PCI
-/* PSYCHO interrupt mapping support. */
-#define PSYCHO_IMAP_A_SLOT0	0x0c00UL
-#define PSYCHO_IMAP_B_SLOT0	0x0c20UL
-static unsigned long psycho_pcislot_imap_offset(unsigned long ino)
-{
-	unsigned int bus =  (ino & 0x10) >> 4;
-	unsigned int slot = (ino & 0x0c) >> 2;
-
-	if (bus == 0)
-		return PSYCHO_IMAP_A_SLOT0 + (slot * 8);
-	else
-		return PSYCHO_IMAP_B_SLOT0 + (slot * 8);
-}
-
-#define PSYCHO_OBIO_IMAP_BASE	0x1000UL
-
-#define PSYCHO_ONBOARD_IRQ_BASE		0x20
-#define psycho_onboard_imap_offset(__ino) \
-	(PSYCHO_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
-
-#define PSYCHO_ICLR_A_SLOT0	0x1400UL
-#define PSYCHO_ICLR_SCSI	0x1800UL
-
-#define psycho_iclr_offset(ino)					      \
-	((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) :  \
-			(PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
-
-static unsigned int psycho_irq_build(struct device_node *dp,
-				     unsigned int ino,
-				     void *_data)
-{
-	unsigned long controller_regs = (unsigned long) _data;
-	unsigned long imap, iclr;
-	unsigned long imap_off, iclr_off;
-	int inofixup = 0;
-
-	ino &= 0x3f;
-	if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
-		/* PCI slot */
-		imap_off = psycho_pcislot_imap_offset(ino);
-	} else {
-		/* Onboard device */
-		imap_off = psycho_onboard_imap_offset(ino);
-	}
-
-	/* Now build the IRQ bucket. */
-	imap = controller_regs + imap_off;
-
-	iclr_off = psycho_iclr_offset(ino);
-	iclr = controller_regs + iclr_off;
-
-	if ((ino & 0x20) == 0)
-		inofixup = ino & 0x03;
-
-	return build_irq(inofixup, iclr, imap);
-}
-
-static void __init psycho_irq_trans_init(struct device_node *dp)
-{
-	const struct linux_prom64_registers *regs;
-
-	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
-	dp->irq_trans->irq_build = psycho_irq_build;
-
-	regs = of_get_property(dp, "reg", NULL);
-	dp->irq_trans->data = (void *) regs[2].phys_addr;
-}
-
-#define sabre_read(__reg) \
-({	u64 __ret; \
-	__asm__ __volatile__("ldxa [%1] %2, %0" \
-			     : "=r" (__ret) \
-			     : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
-			     : "memory"); \
-	__ret; \
-})
-
-struct sabre_irq_data {
-	unsigned long controller_regs;
-	unsigned int pci_first_busno;
-};
-#define SABRE_CONFIGSPACE	0x001000000UL
-#define SABRE_WRSYNC		0x1c20UL
-
-#define SABRE_CONFIG_BASE(CONFIG_SPACE)	\
-	(CONFIG_SPACE | (1UL << 24))
-#define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG)	\
-	(((unsigned long)(BUS)   << 16) |	\
-	 ((unsigned long)(DEVFN) << 8)  |	\
-	 ((unsigned long)(REG)))
-
-/* 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
- * domain by the cpu.  This sequence is to perform a read on the far
- * side of the non-APB bridge, then perform a read of Sabre's DMA
- * write-sync register.
- */
-static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
-{
-	unsigned int phys_hi = (unsigned int) (unsigned long) _arg1;
-	struct sabre_irq_data *irq_data = _arg2;
-	unsigned long controller_regs = irq_data->controller_regs;
-	unsigned long sync_reg = controller_regs + SABRE_WRSYNC;
-	unsigned long config_space = controller_regs + SABRE_CONFIGSPACE;
-	unsigned int bus, devfn;
-	u16 _unused;
-
-	config_space = SABRE_CONFIG_BASE(config_space);
-
-	bus = (phys_hi >> 16) & 0xff;
-	devfn = (phys_hi >> 8) & 0xff;
-
-	config_space |= SABRE_CONFIG_ENCODE(bus, devfn, 0x00);
-
-	__asm__ __volatile__("membar #Sync\n\t"
-			     "lduha [%1] %2, %0\n\t"
-			     "membar #Sync"
-			     : "=r" (_unused)
-			     : "r" ((u16 *) config_space),
-			       "i" (ASI_PHYS_BYPASS_EC_E_L)
-			     : "memory");
-
-	sabre_read(sync_reg);
-}
-
-#define SABRE_IMAP_A_SLOT0	0x0c00UL
-#define SABRE_IMAP_B_SLOT0	0x0c20UL
-#define SABRE_ICLR_A_SLOT0	0x1400UL
-#define SABRE_ICLR_B_SLOT0	0x1480UL
-#define SABRE_ICLR_SCSI		0x1800UL
-#define SABRE_ICLR_ETH		0x1808UL
-#define SABRE_ICLR_BPP		0x1810UL
-#define SABRE_ICLR_AU_REC	0x1818UL
-#define SABRE_ICLR_AU_PLAY	0x1820UL
-#define SABRE_ICLR_PFAIL	0x1828UL
-#define SABRE_ICLR_KMS		0x1830UL
-#define SABRE_ICLR_FLPY		0x1838UL
-#define SABRE_ICLR_SHW		0x1840UL
-#define SABRE_ICLR_KBD		0x1848UL
-#define SABRE_ICLR_MS		0x1850UL
-#define SABRE_ICLR_SER		0x1858UL
-#define SABRE_ICLR_UE		0x1870UL
-#define SABRE_ICLR_CE		0x1878UL
-#define SABRE_ICLR_PCIERR	0x1880UL
-
-static unsigned long sabre_pcislot_imap_offset(unsigned long ino)
-{
-	unsigned int bus =  (ino & 0x10) >> 4;
-	unsigned int slot = (ino & 0x0c) >> 2;
-
-	if (bus == 0)
-		return SABRE_IMAP_A_SLOT0 + (slot * 8);
-	else
-		return SABRE_IMAP_B_SLOT0 + (slot * 8);
-}
-
-#define SABRE_OBIO_IMAP_BASE	0x1000UL
-#define SABRE_ONBOARD_IRQ_BASE	0x20
-#define sabre_onboard_imap_offset(__ino) \
-	(SABRE_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
-
-#define sabre_iclr_offset(ino)					      \
-	((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) :  \
-			(SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
-
-static int sabre_device_needs_wsync(struct device_node *dp)
-{
-	struct device_node *parent = dp->parent;
-	const char *parent_model, *parent_compat;
-
-	/* This traversal up towards the root is meant to
-	 * handle two cases:
-	 *
-	 * 1) non-PCI bus sitting under PCI, such as 'ebus'
-	 * 2) the PCI controller interrupts themselves, which
-	 *    will use the sabre_irq_build but do not need
-	 *    the DMA synchronization handling
-	 */
-	while (parent) {
-		if (!strcmp(parent->type, "pci"))
-			break;
-		parent = parent->parent;
-	}
-
-	if (!parent)
-		return 0;
-
-	parent_model = of_get_property(parent,
-				       "model", NULL);
-	if (parent_model &&
-	    (!strcmp(parent_model, "SUNW,sabre") ||
-	     !strcmp(parent_model, "SUNW,simba")))
-		return 0;
-
-	parent_compat = of_get_property(parent,
-					"compatible", NULL);
-	if (parent_compat &&
-	    (!strcmp(parent_compat, "pci108e,a000") ||
-	     !strcmp(parent_compat, "pci108e,a001")))
-		return 0;
-
-	return 1;
-}
-
-static unsigned int sabre_irq_build(struct device_node *dp,
-				    unsigned int ino,
-				    void *_data)
-{
-	struct sabre_irq_data *irq_data = _data;
-	unsigned long controller_regs = irq_data->controller_regs;
-	const struct linux_prom_pci_registers *regs;
-	unsigned long imap, iclr;
-	unsigned long imap_off, iclr_off;
-	int inofixup = 0;
-	int virt_irq;
-
-	ino &= 0x3f;
-	if (ino < SABRE_ONBOARD_IRQ_BASE) {
-		/* PCI slot */
-		imap_off = sabre_pcislot_imap_offset(ino);
-	} else {
-		/* onboard device */
-		imap_off = sabre_onboard_imap_offset(ino);
-	}
-
-	/* Now build the IRQ bucket. */
-	imap = controller_regs + imap_off;
-
-	iclr_off = sabre_iclr_offset(ino);
-	iclr = controller_regs + iclr_off;
-
-	if ((ino & 0x20) == 0)
-		inofixup = ino & 0x03;
-
-	virt_irq = build_irq(inofixup, iclr, imap);
-
-	/* If the parent device is a PCI<->PCI bridge other than
-	 * APB, we have to install a pre-handler to ensure that
-	 * all pending DMA is drained before the interrupt handler
-	 * is run.
-	 */
-	regs = of_get_property(dp, "reg", NULL);
-	if (regs && sabre_device_needs_wsync(dp)) {
-		irq_install_pre_handler(virt_irq,
-					sabre_wsync_handler,
-					(void *) (long) regs->phys_hi,
-					(void *) irq_data);
-	}
-
-	return virt_irq;
-}
-
-static void __init sabre_irq_trans_init(struct device_node *dp)
-{
-	const struct linux_prom64_registers *regs;
-	struct sabre_irq_data *irq_data;
-	const u32 *busrange;
-
-	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
-	dp->irq_trans->irq_build = sabre_irq_build;
-
-	irq_data = prom_early_alloc(sizeof(struct sabre_irq_data));
-
-	regs = of_get_property(dp, "reg", NULL);
-	irq_data->controller_regs = regs[0].phys_addr;
-
-	busrange = of_get_property(dp, "bus-range", NULL);
-	irq_data->pci_first_busno = busrange[0];
-
-	dp->irq_trans->data = irq_data;
-}
-
-/* SCHIZO interrupt mapping support.  Unlike Psycho, for this controller the
- * imap/iclr registers are per-PBM.
- */
-#define SCHIZO_IMAP_BASE	0x1000UL
-#define SCHIZO_ICLR_BASE	0x1400UL
-
-static unsigned long schizo_imap_offset(unsigned long ino)
-{
-	return SCHIZO_IMAP_BASE + (ino * 8UL);
-}
-
-static unsigned long schizo_iclr_offset(unsigned long ino)
-{
-	return SCHIZO_ICLR_BASE + (ino * 8UL);
-}
-
-static unsigned long schizo_ino_to_iclr(unsigned long pbm_regs,
-					unsigned int ino)
-{
-
-	return pbm_regs + schizo_iclr_offset(ino);
-}
-
-static unsigned long schizo_ino_to_imap(unsigned long pbm_regs,
-					unsigned int ino)
-{
-	return pbm_regs + schizo_imap_offset(ino);
-}
-
-#define schizo_read(__reg) \
-({	u64 __ret; \
-	__asm__ __volatile__("ldxa [%1] %2, %0" \
-			     : "=r" (__ret) \
-			     : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
-			     : "memory"); \
-	__ret; \
-})
-#define schizo_write(__reg, __val) \
-	__asm__ __volatile__("stxa %0, [%1] %2" \
-			     : /* no outputs */ \
-			     : "r" (__val), "r" (__reg), \
-			       "i" (ASI_PHYS_BYPASS_EC_E) \
-			     : "memory")
-
-static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
-{
-	unsigned long sync_reg = (unsigned long) _arg2;
-	u64 mask = 1UL << (ino & IMAP_INO);
-	u64 val;
-	int limit;
-
-	schizo_write(sync_reg, mask);
-
-	limit = 100000;
-	val = 0;
-	while (--limit) {
-		val = schizo_read(sync_reg);
-		if (!(val & mask))
-			break;
-	}
-	if (limit <= 0) {
-		printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
-		       val, mask);
-	}
-
-	if (_arg1) {
-		static unsigned char cacheline[64]
-			__attribute__ ((aligned (64)));
-
-		__asm__ __volatile__("rd %%fprs, %0\n\t"
-				     "or %0, %4, %1\n\t"
-				     "wr %1, 0x0, %%fprs\n\t"
-				     "stda %%f0, [%5] %6\n\t"
-				     "wr %0, 0x0, %%fprs\n\t"
-				     "membar #Sync"
-				     : "=&r" (mask), "=&r" (val)
-				     : "0" (mask), "1" (val),
-				     "i" (FPRS_FEF), "r" (&cacheline[0]),
-				     "i" (ASI_BLK_COMMIT_P));
-	}
-}
-
-struct schizo_irq_data {
-	unsigned long pbm_regs;
-	unsigned long sync_reg;
-	u32 portid;
-	int chip_version;
-};
-
-static unsigned int schizo_irq_build(struct device_node *dp,
-				     unsigned int ino,
-				     void *_data)
-{
-	struct schizo_irq_data *irq_data = _data;
-	unsigned long pbm_regs = irq_data->pbm_regs;
-	unsigned long imap, iclr;
-	int ign_fixup;
-	int virt_irq;
-	int is_tomatillo;
-
-	ino &= 0x3f;
-
-	/* Now build the IRQ bucket. */
-	imap = schizo_ino_to_imap(pbm_regs, ino);
-	iclr = schizo_ino_to_iclr(pbm_regs, ino);
-
-	/* On Schizo, no inofixup occurs.  This is because each
-	 * INO has it's own IMAP register.  On Psycho and Sabre
-	 * there is only one IMAP register for each PCI slot even
-	 * though four different INOs can be generated by each
-	 * PCI slot.
-	 *
-	 * But, for JBUS variants (essentially, Tomatillo), we have
-	 * to fixup the lowest bit of the interrupt group number.
-	 */
-	ign_fixup = 0;
-
-	is_tomatillo = (irq_data->sync_reg != 0UL);
-
-	if (is_tomatillo) {
-		if (irq_data->portid & 1)
-			ign_fixup = (1 << 6);
-	}
-
-	virt_irq = build_irq(ign_fixup, iclr, imap);
-
-	if (is_tomatillo) {
-		irq_install_pre_handler(virt_irq,
-					tomatillo_wsync_handler,
-					((irq_data->chip_version <= 4) ?
-					 (void *) 1 : (void *) 0),
-					(void *) irq_data->sync_reg);
-	}
-
-	return virt_irq;
-}
-
-static void __init __schizo_irq_trans_init(struct device_node *dp,
-					   int is_tomatillo)
-{
-	const struct linux_prom64_registers *regs;
-	struct schizo_irq_data *irq_data;
-
-	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
-	dp->irq_trans->irq_build = schizo_irq_build;
-
-	irq_data = prom_early_alloc(sizeof(struct schizo_irq_data));
-
-	regs = of_get_property(dp, "reg", NULL);
-	dp->irq_trans->data = irq_data;
-
-	irq_data->pbm_regs = regs[0].phys_addr;
-	if (is_tomatillo)
-		irq_data->sync_reg = regs[3].phys_addr + 0x1a18UL;
-	else
-		irq_data->sync_reg = 0UL;
-	irq_data->portid = of_getintprop_default(dp, "portid", 0);
-	irq_data->chip_version = of_getintprop_default(dp, "version#", 0);
-}
-
-static void __init schizo_irq_trans_init(struct device_node *dp)
-{
-	__schizo_irq_trans_init(dp, 0);
-}
-
-static void __init tomatillo_irq_trans_init(struct device_node *dp)
-{
-	__schizo_irq_trans_init(dp, 1);
-}
-
-static unsigned int pci_sun4v_irq_build(struct device_node *dp,
-					unsigned int devino,
-					void *_data)
-{
-	u32 devhandle = (u32) (unsigned long) _data;
-
-	return sun4v_build_irq(devhandle, devino);
-}
-
-static void __init pci_sun4v_irq_trans_init(struct device_node *dp)
-{
-	const struct linux_prom64_registers *regs;
-
-	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
-	dp->irq_trans->irq_build = pci_sun4v_irq_build;
-
-	regs = of_get_property(dp, "reg", NULL);
-	dp->irq_trans->data = (void *) (unsigned long)
-		((regs->phys_addr >> 32UL) & 0x0fffffff);
-}
-
-struct fire_irq_data {
-	unsigned long pbm_regs;
-	u32 portid;
-};
-
-#define FIRE_IMAP_BASE	0x001000
-#define FIRE_ICLR_BASE	0x001400
-
-static unsigned long fire_imap_offset(unsigned long ino)
-{
-	return FIRE_IMAP_BASE + (ino * 8UL);
-}
-
-static unsigned long fire_iclr_offset(unsigned long ino)
-{
-	return FIRE_ICLR_BASE + (ino * 8UL);
-}
-
-static unsigned long fire_ino_to_iclr(unsigned long pbm_regs,
-					    unsigned int ino)
-{
-	return pbm_regs + fire_iclr_offset(ino);
-}
-
-static unsigned long fire_ino_to_imap(unsigned long pbm_regs,
-					    unsigned int ino)
-{
-	return pbm_regs + fire_imap_offset(ino);
-}
-
-static unsigned int fire_irq_build(struct device_node *dp,
-					 unsigned int ino,
-					 void *_data)
-{
-	struct fire_irq_data *irq_data = _data;
-	unsigned long pbm_regs = irq_data->pbm_regs;
-	unsigned long imap, iclr;
-	unsigned long int_ctrlr;
-
-	ino &= 0x3f;
-
-	/* Now build the IRQ bucket. */
-	imap = fire_ino_to_imap(pbm_regs, ino);
-	iclr = fire_ino_to_iclr(pbm_regs, ino);
-
-	/* Set the interrupt controller number.  */
-	int_ctrlr = 1 << 6;
-	upa_writeq(int_ctrlr, imap);
-
-	/* The interrupt map registers do not have an INO field
-	 * like other chips do.  They return zero in the INO
-	 * field, and the interrupt controller number is controlled
-	 * in bits 6 to 9.  So in order for build_irq() to get
-	 * the INO right we pass it in as part of the fixup
-	 * which will get added to the map register zero value
-	 * read by build_irq().
-	 */
-	ino |= (irq_data->portid << 6);
-	ino -= int_ctrlr;
-	return build_irq(ino, iclr, imap);
-}
-
-static void __init fire_irq_trans_init(struct device_node *dp)
-{
-	const struct linux_prom64_registers *regs;
-	struct fire_irq_data *irq_data;
-
-	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
-	dp->irq_trans->irq_build = fire_irq_build;
-
-	irq_data = prom_early_alloc(sizeof(struct fire_irq_data));
-
-	regs = of_get_property(dp, "reg", NULL);
-	dp->irq_trans->data = irq_data;
-
-	irq_data->pbm_regs = regs[0].phys_addr;
-	irq_data->portid = of_getintprop_default(dp, "portid", 0);
-}
-#endif /* CONFIG_PCI */
-
-#ifdef CONFIG_SBUS
-/* INO number to IMAP register offset for SYSIO external IRQ's.
- * This should conform to both Sunfire/Wildfire server and Fusion
- * desktop designs.
- */
-#define SYSIO_IMAP_SLOT0	0x2c00UL
-#define SYSIO_IMAP_SLOT1	0x2c08UL
-#define SYSIO_IMAP_SLOT2	0x2c10UL
-#define SYSIO_IMAP_SLOT3	0x2c18UL
-#define SYSIO_IMAP_SCSI		0x3000UL
-#define SYSIO_IMAP_ETH		0x3008UL
-#define SYSIO_IMAP_BPP		0x3010UL
-#define SYSIO_IMAP_AUDIO	0x3018UL
-#define SYSIO_IMAP_PFAIL	0x3020UL
-#define SYSIO_IMAP_KMS		0x3028UL
-#define SYSIO_IMAP_FLPY		0x3030UL
-#define SYSIO_IMAP_SHW		0x3038UL
-#define SYSIO_IMAP_KBD		0x3040UL
-#define SYSIO_IMAP_MS		0x3048UL
-#define SYSIO_IMAP_SER		0x3050UL
-#define SYSIO_IMAP_TIM0		0x3060UL
-#define SYSIO_IMAP_TIM1		0x3068UL
-#define SYSIO_IMAP_UE		0x3070UL
-#define SYSIO_IMAP_CE		0x3078UL
-#define SYSIO_IMAP_SBERR	0x3080UL
-#define SYSIO_IMAP_PMGMT	0x3088UL
-#define SYSIO_IMAP_GFX		0x3090UL
-#define SYSIO_IMAP_EUPA		0x3098UL
-
-#define bogon     ((unsigned long) -1)
-static unsigned long sysio_irq_offsets[] = {
-	/* SBUS Slot 0 --> 3, level 1 --> 7 */
-	SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
-	SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
-	SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
-	SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
-	SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
-	SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
-	SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
-	SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
-
-	/* Onboard devices (not relevant/used on SunFire). */
-	SYSIO_IMAP_SCSI,
-	SYSIO_IMAP_ETH,
-	SYSIO_IMAP_BPP,
-	bogon,
-	SYSIO_IMAP_AUDIO,
-	SYSIO_IMAP_PFAIL,
-	bogon,
-	bogon,
-	SYSIO_IMAP_KMS,
-	SYSIO_IMAP_FLPY,
-	SYSIO_IMAP_SHW,
-	SYSIO_IMAP_KBD,
-	SYSIO_IMAP_MS,
-	SYSIO_IMAP_SER,
-	bogon,
-	bogon,
-	SYSIO_IMAP_TIM0,
-	SYSIO_IMAP_TIM1,
-	bogon,
-	bogon,
-	SYSIO_IMAP_UE,
-	SYSIO_IMAP_CE,
-	SYSIO_IMAP_SBERR,
-	SYSIO_IMAP_PMGMT,
-	SYSIO_IMAP_GFX,
-	SYSIO_IMAP_EUPA,
-};
-
-#undef bogon
-
-#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
-
-/* Convert Interrupt Mapping register pointer to associated
- * Interrupt Clear register pointer, SYSIO specific version.
- */
-#define SYSIO_ICLR_UNUSED0	0x3400UL
-#define SYSIO_ICLR_SLOT0	0x3408UL
-#define SYSIO_ICLR_SLOT1	0x3448UL
-#define SYSIO_ICLR_SLOT2	0x3488UL
-#define SYSIO_ICLR_SLOT3	0x34c8UL
-static unsigned long sysio_imap_to_iclr(unsigned long imap)
-{
-	unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
-	return imap + diff;
-}
-
-static unsigned int sbus_of_build_irq(struct device_node *dp,
-				      unsigned int ino,
-				      void *_data)
-{
-	unsigned long reg_base = (unsigned long) _data;
-	const struct linux_prom_registers *regs;
-	unsigned long imap, iclr;
-	int sbus_slot = 0;
-	int sbus_level = 0;
-
-	ino &= 0x3f;
-
-	regs = of_get_property(dp, "reg", NULL);
-	if (regs)
-		sbus_slot = regs->which_io;
-
-	if (ino < 0x20)
-		ino += (sbus_slot * 8);
-
-	imap = sysio_irq_offsets[ino];
-	if (imap == ((unsigned long)-1)) {
-		prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
-			    ino);
-		prom_halt();
-	}
-	imap += reg_base;
-
-	/* SYSIO inconsistency.  For external SLOTS, we have to select
-	 * the right ICLR register based upon the lower SBUS irq level
-	 * bits.
-	 */
-	if (ino >= 0x20) {
-		iclr = sysio_imap_to_iclr(imap);
-	} else {
-		sbus_level = ino & 0x7;
-
-		switch(sbus_slot) {
-		case 0:
-			iclr = reg_base + SYSIO_ICLR_SLOT0;
-			break;
-		case 1:
-			iclr = reg_base + SYSIO_ICLR_SLOT1;
-			break;
-		case 2:
-			iclr = reg_base + SYSIO_ICLR_SLOT2;
-			break;
-		default:
-		case 3:
-			iclr = reg_base + SYSIO_ICLR_SLOT3;
-			break;
-		};
-
-		iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
-	}
-	return build_irq(sbus_level, iclr, imap);
-}
-
-static void __init sbus_irq_trans_init(struct device_node *dp)
-{
-	const struct linux_prom64_registers *regs;
-
-	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
-	dp->irq_trans->irq_build = sbus_of_build_irq;
-
-	regs = of_get_property(dp, "reg", NULL);
-	dp->irq_trans->data = (void *) (unsigned long) regs->phys_addr;
-}
-#endif /* CONFIG_SBUS */
-
-
-static unsigned int central_build_irq(struct device_node *dp,
-				      unsigned int ino,
-				      void *_data)
-{
-	struct device_node *central_dp = _data;
-	struct of_device *central_op = of_find_device_by_node(central_dp);
-	struct resource *res;
-	unsigned long imap, iclr;
-	u32 tmp;
-
-	if (!strcmp(dp->name, "eeprom")) {
-		res = &central_op->resource[5];
-	} else if (!strcmp(dp->name, "zs")) {
-		res = &central_op->resource[4];
-	} else if (!strcmp(dp->name, "clock-board")) {
-		res = &central_op->resource[3];
-	} else {
-		return ino;
-	}
-
-	imap = res->start + 0x00UL;
-	iclr = res->start + 0x10UL;
-
-	/* Set the INO state to idle, and disable.  */
-	upa_writel(0, iclr);
-	upa_readl(iclr);
-
-	tmp = upa_readl(imap);
-	tmp &= ~0x80000000;
-	upa_writel(tmp, imap);
-
-	return build_irq(0, iclr, imap);
-}
-
-static void __init central_irq_trans_init(struct device_node *dp)
-{
-	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
-	dp->irq_trans->irq_build = central_build_irq;
-
-	dp->irq_trans->data = dp;
-}
-
-struct irq_trans {
-	const char *name;
-	void (*init)(struct device_node *);
-};
-
-#ifdef CONFIG_PCI
-static struct irq_trans __initdata pci_irq_trans_table[] = {
-	{ "SUNW,sabre", sabre_irq_trans_init },
-	{ "pci108e,a000", sabre_irq_trans_init },
-	{ "pci108e,a001", sabre_irq_trans_init },
-	{ "SUNW,psycho", psycho_irq_trans_init },
-	{ "pci108e,8000", psycho_irq_trans_init },
-	{ "SUNW,schizo", schizo_irq_trans_init },
-	{ "pci108e,8001", schizo_irq_trans_init },
-	{ "SUNW,schizo+", schizo_irq_trans_init },
-	{ "pci108e,8002", schizo_irq_trans_init },
-	{ "SUNW,tomatillo", tomatillo_irq_trans_init },
-	{ "pci108e,a801", tomatillo_irq_trans_init },
-	{ "SUNW,sun4v-pci", pci_sun4v_irq_trans_init },
-	{ "pciex108e,80f0", fire_irq_trans_init },
-};
-#endif
-
-static unsigned int sun4v_vdev_irq_build(struct device_node *dp,
-					 unsigned int devino,
-					 void *_data)
-{
-	u32 devhandle = (u32) (unsigned long) _data;
-
-	return sun4v_build_irq(devhandle, devino);
-}
-
-static void __init sun4v_vdev_irq_trans_init(struct device_node *dp)
-{
-	const struct linux_prom64_registers *regs;
-
-	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
-	dp->irq_trans->irq_build = sun4v_vdev_irq_build;
-
-	regs = of_get_property(dp, "reg", NULL);
-	dp->irq_trans->data = (void *) (unsigned long)
-		((regs->phys_addr >> 32UL) & 0x0fffffff);
-}
-
-static void __init irq_trans_init(struct device_node *dp)
-{
-#ifdef CONFIG_PCI
-	const char *model;
-	int i;
-#endif
-
-#ifdef CONFIG_PCI
-	model = of_get_property(dp, "model", NULL);
-	if (!model)
-		model = of_get_property(dp, "compatible", NULL);
-	if (model) {
-		for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
-			struct irq_trans *t = &pci_irq_trans_table[i];
-
-			if (!strcmp(model, t->name)) {
-				t->init(dp);
-				return;
-			}
-		}
-	}
-#endif
-#ifdef CONFIG_SBUS
-	if (!strcmp(dp->name, "sbus") ||
-	    !strcmp(dp->name, "sbi")) {
-		sbus_irq_trans_init(dp);
-		return;
-	}
-#endif
-	if (!strcmp(dp->name, "fhc") &&
-	    !strcmp(dp->parent->name, "central")) {
-		central_irq_trans_init(dp);
-		return;
-	}
-	if (!strcmp(dp->name, "virtual-devices") ||
-	    !strcmp(dp->name, "niu")) {
-		sun4v_vdev_irq_trans_init(dp);
-		return;
-	}
-}
-
 static int is_root_node(const struct device_node *dp)
 {
 	if (!dp)
diff --git a/arch/sparc/kernel/prom_irqtrans.c b/arch/sparc/kernel/prom_irqtrans.c
new file mode 100644
index 00000000000..96958c4dce8
--- /dev/null
+++ b/arch/sparc/kernel/prom_irqtrans.c
@@ -0,0 +1,842 @@
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
+#include <asm/oplib.h>
+#include <asm/prom.h>
+#include <asm/irq.h>
+#include <asm/upa.h>
+
+#include "prom.h"
+
+#ifdef CONFIG_PCI
+/* PSYCHO interrupt mapping support. */
+#define PSYCHO_IMAP_A_SLOT0	0x0c00UL
+#define PSYCHO_IMAP_B_SLOT0	0x0c20UL
+static unsigned long psycho_pcislot_imap_offset(unsigned long ino)
+{
+	unsigned int bus =  (ino & 0x10) >> 4;
+	unsigned int slot = (ino & 0x0c) >> 2;
+
+	if (bus == 0)
+		return PSYCHO_IMAP_A_SLOT0 + (slot * 8);
+	else
+		return PSYCHO_IMAP_B_SLOT0 + (slot * 8);
+}
+
+#define PSYCHO_OBIO_IMAP_BASE	0x1000UL
+
+#define PSYCHO_ONBOARD_IRQ_BASE		0x20
+#define psycho_onboard_imap_offset(__ino) \
+	(PSYCHO_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
+
+#define PSYCHO_ICLR_A_SLOT0	0x1400UL
+#define PSYCHO_ICLR_SCSI	0x1800UL
+
+#define psycho_iclr_offset(ino)					      \
+	((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) :  \
+			(PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
+
+static unsigned int psycho_irq_build(struct device_node *dp,
+				     unsigned int ino,
+				     void *_data)
+{
+	unsigned long controller_regs = (unsigned long) _data;
+	unsigned long imap, iclr;
+	unsigned long imap_off, iclr_off;
+	int inofixup = 0;
+
+	ino &= 0x3f;
+	if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
+		/* PCI slot */
+		imap_off = psycho_pcislot_imap_offset(ino);
+	} else {
+		/* Onboard device */
+		imap_off = psycho_onboard_imap_offset(ino);
+	}
+
+	/* Now build the IRQ bucket. */
+	imap = controller_regs + imap_off;
+
+	iclr_off = psycho_iclr_offset(ino);
+	iclr = controller_regs + iclr_off;
+
+	if ((ino & 0x20) == 0)
+		inofixup = ino & 0x03;
+
+	return build_irq(inofixup, iclr, imap);
+}
+
+static void __init psycho_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = psycho_irq_build;
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = (void *) regs[2].phys_addr;
+}
+
+#define sabre_read(__reg) \
+({	u64 __ret; \
+	__asm__ __volatile__("ldxa [%1] %2, %0" \
+			     : "=r" (__ret) \
+			     : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
+			     : "memory"); \
+	__ret; \
+})
+
+struct sabre_irq_data {
+	unsigned long controller_regs;
+	unsigned int pci_first_busno;
+};
+#define SABRE_CONFIGSPACE	0x001000000UL
+#define SABRE_WRSYNC		0x1c20UL
+
+#define SABRE_CONFIG_BASE(CONFIG_SPACE)	\
+	(CONFIG_SPACE | (1UL << 24))
+#define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG)	\
+	(((unsigned long)(BUS)   << 16) |	\
+	 ((unsigned long)(DEVFN) << 8)  |	\
+	 ((unsigned long)(REG)))
+
+/* 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
+ * domain by the cpu.  This sequence is to perform a read on the far
+ * side of the non-APB bridge, then perform a read of Sabre's DMA
+ * write-sync register.
+ */
+static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
+{
+	unsigned int phys_hi = (unsigned int) (unsigned long) _arg1;
+	struct sabre_irq_data *irq_data = _arg2;
+	unsigned long controller_regs = irq_data->controller_regs;
+	unsigned long sync_reg = controller_regs + SABRE_WRSYNC;
+	unsigned long config_space = controller_regs + SABRE_CONFIGSPACE;
+	unsigned int bus, devfn;
+	u16 _unused;
+
+	config_space = SABRE_CONFIG_BASE(config_space);
+
+	bus = (phys_hi >> 16) & 0xff;
+	devfn = (phys_hi >> 8) & 0xff;
+
+	config_space |= SABRE_CONFIG_ENCODE(bus, devfn, 0x00);
+
+	__asm__ __volatile__("membar #Sync\n\t"
+			     "lduha [%1] %2, %0\n\t"
+			     "membar #Sync"
+			     : "=r" (_unused)
+			     : "r" ((u16 *) config_space),
+			       "i" (ASI_PHYS_BYPASS_EC_E_L)
+			     : "memory");
+
+	sabre_read(sync_reg);
+}
+
+#define SABRE_IMAP_A_SLOT0	0x0c00UL
+#define SABRE_IMAP_B_SLOT0	0x0c20UL
+#define SABRE_ICLR_A_SLOT0	0x1400UL
+#define SABRE_ICLR_B_SLOT0	0x1480UL
+#define SABRE_ICLR_SCSI		0x1800UL
+#define SABRE_ICLR_ETH		0x1808UL
+#define SABRE_ICLR_BPP		0x1810UL
+#define SABRE_ICLR_AU_REC	0x1818UL
+#define SABRE_ICLR_AU_PLAY	0x1820UL
+#define SABRE_ICLR_PFAIL	0x1828UL
+#define SABRE_ICLR_KMS		0x1830UL
+#define SABRE_ICLR_FLPY		0x1838UL
+#define SABRE_ICLR_SHW		0x1840UL
+#define SABRE_ICLR_KBD		0x1848UL
+#define SABRE_ICLR_MS		0x1850UL
+#define SABRE_ICLR_SER		0x1858UL
+#define SABRE_ICLR_UE		0x1870UL
+#define SABRE_ICLR_CE		0x1878UL
+#define SABRE_ICLR_PCIERR	0x1880UL
+
+static unsigned long sabre_pcislot_imap_offset(unsigned long ino)
+{
+	unsigned int bus =  (ino & 0x10) >> 4;
+	unsigned int slot = (ino & 0x0c) >> 2;
+
+	if (bus == 0)
+		return SABRE_IMAP_A_SLOT0 + (slot * 8);
+	else
+		return SABRE_IMAP_B_SLOT0 + (slot * 8);
+}
+
+#define SABRE_OBIO_IMAP_BASE	0x1000UL
+#define SABRE_ONBOARD_IRQ_BASE	0x20
+#define sabre_onboard_imap_offset(__ino) \
+	(SABRE_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
+
+#define sabre_iclr_offset(ino)					      \
+	((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) :  \
+			(SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
+
+static int sabre_device_needs_wsync(struct device_node *dp)
+{
+	struct device_node *parent = dp->parent;
+	const char *parent_model, *parent_compat;
+
+	/* This traversal up towards the root is meant to
+	 * handle two cases:
+	 *
+	 * 1) non-PCI bus sitting under PCI, such as 'ebus'
+	 * 2) the PCI controller interrupts themselves, which
+	 *    will use the sabre_irq_build but do not need
+	 *    the DMA synchronization handling
+	 */
+	while (parent) {
+		if (!strcmp(parent->type, "pci"))
+			break;
+		parent = parent->parent;
+	}
+
+	if (!parent)
+		return 0;
+
+	parent_model = of_get_property(parent,
+				       "model", NULL);
+	if (parent_model &&
+	    (!strcmp(parent_model, "SUNW,sabre") ||
+	     !strcmp(parent_model, "SUNW,simba")))
+		return 0;
+
+	parent_compat = of_get_property(parent,
+					"compatible", NULL);
+	if (parent_compat &&
+	    (!strcmp(parent_compat, "pci108e,a000") ||
+	     !strcmp(parent_compat, "pci108e,a001")))
+		return 0;
+
+	return 1;
+}
+
+static unsigned int sabre_irq_build(struct device_node *dp,
+				    unsigned int ino,
+				    void *_data)
+{
+	struct sabre_irq_data *irq_data = _data;
+	unsigned long controller_regs = irq_data->controller_regs;
+	const struct linux_prom_pci_registers *regs;
+	unsigned long imap, iclr;
+	unsigned long imap_off, iclr_off;
+	int inofixup = 0;
+	int virt_irq;
+
+	ino &= 0x3f;
+	if (ino < SABRE_ONBOARD_IRQ_BASE) {
+		/* PCI slot */
+		imap_off = sabre_pcislot_imap_offset(ino);
+	} else {
+		/* onboard device */
+		imap_off = sabre_onboard_imap_offset(ino);
+	}
+
+	/* Now build the IRQ bucket. */
+	imap = controller_regs + imap_off;
+
+	iclr_off = sabre_iclr_offset(ino);
+	iclr = controller_regs + iclr_off;
+
+	if ((ino & 0x20) == 0)
+		inofixup = ino & 0x03;
+
+	virt_irq = build_irq(inofixup, iclr, imap);
+
+	/* If the parent device is a PCI<->PCI bridge other than
+	 * APB, we have to install a pre-handler to ensure that
+	 * all pending DMA is drained before the interrupt handler
+	 * is run.
+	 */
+	regs = of_get_property(dp, "reg", NULL);
+	if (regs && sabre_device_needs_wsync(dp)) {
+		irq_install_pre_handler(virt_irq,
+					sabre_wsync_handler,
+					(void *) (long) regs->phys_hi,
+					(void *) irq_data);
+	}
+
+	return virt_irq;
+}
+
+static void __init sabre_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+	struct sabre_irq_data *irq_data;
+	const u32 *busrange;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = sabre_irq_build;
+
+	irq_data = prom_early_alloc(sizeof(struct sabre_irq_data));
+
+	regs = of_get_property(dp, "reg", NULL);
+	irq_data->controller_regs = regs[0].phys_addr;
+
+	busrange = of_get_property(dp, "bus-range", NULL);
+	irq_data->pci_first_busno = busrange[0];
+
+	dp->irq_trans->data = irq_data;
+}
+
+/* SCHIZO interrupt mapping support.  Unlike Psycho, for this controller the
+ * imap/iclr registers are per-PBM.
+ */
+#define SCHIZO_IMAP_BASE	0x1000UL
+#define SCHIZO_ICLR_BASE	0x1400UL
+
+static unsigned long schizo_imap_offset(unsigned long ino)
+{
+	return SCHIZO_IMAP_BASE + (ino * 8UL);
+}
+
+static unsigned long schizo_iclr_offset(unsigned long ino)
+{
+	return SCHIZO_ICLR_BASE + (ino * 8UL);
+}
+
+static unsigned long schizo_ino_to_iclr(unsigned long pbm_regs,
+					unsigned int ino)
+{
+
+	return pbm_regs + schizo_iclr_offset(ino);
+}
+
+static unsigned long schizo_ino_to_imap(unsigned long pbm_regs,
+					unsigned int ino)
+{
+	return pbm_regs + schizo_imap_offset(ino);
+}
+
+#define schizo_read(__reg) \
+({	u64 __ret; \
+	__asm__ __volatile__("ldxa [%1] %2, %0" \
+			     : "=r" (__ret) \
+			     : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
+			     : "memory"); \
+	__ret; \
+})
+#define schizo_write(__reg, __val) \
+	__asm__ __volatile__("stxa %0, [%1] %2" \
+			     : /* no outputs */ \
+			     : "r" (__val), "r" (__reg), \
+			       "i" (ASI_PHYS_BYPASS_EC_E) \
+			     : "memory")
+
+static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
+{
+	unsigned long sync_reg = (unsigned long) _arg2;
+	u64 mask = 1UL << (ino & IMAP_INO);
+	u64 val;
+	int limit;
+
+	schizo_write(sync_reg, mask);
+
+	limit = 100000;
+	val = 0;
+	while (--limit) {
+		val = schizo_read(sync_reg);
+		if (!(val & mask))
+			break;
+	}
+	if (limit <= 0) {
+		printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
+		       val, mask);
+	}
+
+	if (_arg1) {
+		static unsigned char cacheline[64]
+			__attribute__ ((aligned (64)));
+
+		__asm__ __volatile__("rd %%fprs, %0\n\t"
+				     "or %0, %4, %1\n\t"
+				     "wr %1, 0x0, %%fprs\n\t"
+				     "stda %%f0, [%5] %6\n\t"
+				     "wr %0, 0x0, %%fprs\n\t"
+				     "membar #Sync"
+				     : "=&r" (mask), "=&r" (val)
+				     : "0" (mask), "1" (val),
+				     "i" (FPRS_FEF), "r" (&cacheline[0]),
+				     "i" (ASI_BLK_COMMIT_P));
+	}
+}
+
+struct schizo_irq_data {
+	unsigned long pbm_regs;
+	unsigned long sync_reg;
+	u32 portid;
+	int chip_version;
+};
+
+static unsigned int schizo_irq_build(struct device_node *dp,
+				     unsigned int ino,
+				     void *_data)
+{
+	struct schizo_irq_data *irq_data = _data;
+	unsigned long pbm_regs = irq_data->pbm_regs;
+	unsigned long imap, iclr;
+	int ign_fixup;
+	int virt_irq;
+	int is_tomatillo;
+
+	ino &= 0x3f;
+
+	/* Now build the IRQ bucket. */
+	imap = schizo_ino_to_imap(pbm_regs, ino);
+	iclr = schizo_ino_to_iclr(pbm_regs, ino);
+
+	/* On Schizo, no inofixup occurs.  This is because each
+	 * INO has it's own IMAP register.  On Psycho and Sabre
+	 * there is only one IMAP register for each PCI slot even
+	 * though four different INOs can be generated by each
+	 * PCI slot.
+	 *
+	 * But, for JBUS variants (essentially, Tomatillo), we have
+	 * to fixup the lowest bit of the interrupt group number.
+	 */
+	ign_fixup = 0;
+
+	is_tomatillo = (irq_data->sync_reg != 0UL);
+
+	if (is_tomatillo) {
+		if (irq_data->portid & 1)
+			ign_fixup = (1 << 6);
+	}
+
+	virt_irq = build_irq(ign_fixup, iclr, imap);
+
+	if (is_tomatillo) {
+		irq_install_pre_handler(virt_irq,
+					tomatillo_wsync_handler,
+					((irq_data->chip_version <= 4) ?
+					 (void *) 1 : (void *) 0),
+					(void *) irq_data->sync_reg);
+	}
+
+	return virt_irq;
+}
+
+static void __init __schizo_irq_trans_init(struct device_node *dp,
+					   int is_tomatillo)
+{
+	const struct linux_prom64_registers *regs;
+	struct schizo_irq_data *irq_data;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = schizo_irq_build;
+
+	irq_data = prom_early_alloc(sizeof(struct schizo_irq_data));
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = irq_data;
+
+	irq_data->pbm_regs = regs[0].phys_addr;
+	if (is_tomatillo)
+		irq_data->sync_reg = regs[3].phys_addr + 0x1a18UL;
+	else
+		irq_data->sync_reg = 0UL;
+	irq_data->portid = of_getintprop_default(dp, "portid", 0);
+	irq_data->chip_version = of_getintprop_default(dp, "version#", 0);
+}
+
+static void __init schizo_irq_trans_init(struct device_node *dp)
+{
+	__schizo_irq_trans_init(dp, 0);
+}
+
+static void __init tomatillo_irq_trans_init(struct device_node *dp)
+{
+	__schizo_irq_trans_init(dp, 1);
+}
+
+static unsigned int pci_sun4v_irq_build(struct device_node *dp,
+					unsigned int devino,
+					void *_data)
+{
+	u32 devhandle = (u32) (unsigned long) _data;
+
+	return sun4v_build_irq(devhandle, devino);
+}
+
+static void __init pci_sun4v_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = pci_sun4v_irq_build;
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = (void *) (unsigned long)
+		((regs->phys_addr >> 32UL) & 0x0fffffff);
+}
+
+struct fire_irq_data {
+	unsigned long pbm_regs;
+	u32 portid;
+};
+
+#define FIRE_IMAP_BASE	0x001000
+#define FIRE_ICLR_BASE	0x001400
+
+static unsigned long fire_imap_offset(unsigned long ino)
+{
+	return FIRE_IMAP_BASE + (ino * 8UL);
+}
+
+static unsigned long fire_iclr_offset(unsigned long ino)
+{
+	return FIRE_ICLR_BASE + (ino * 8UL);
+}
+
+static unsigned long fire_ino_to_iclr(unsigned long pbm_regs,
+					    unsigned int ino)
+{
+	return pbm_regs + fire_iclr_offset(ino);
+}
+
+static unsigned long fire_ino_to_imap(unsigned long pbm_regs,
+					    unsigned int ino)
+{
+	return pbm_regs + fire_imap_offset(ino);
+}
+
+static unsigned int fire_irq_build(struct device_node *dp,
+					 unsigned int ino,
+					 void *_data)
+{
+	struct fire_irq_data *irq_data = _data;
+	unsigned long pbm_regs = irq_data->pbm_regs;
+	unsigned long imap, iclr;
+	unsigned long int_ctrlr;
+
+	ino &= 0x3f;
+
+	/* Now build the IRQ bucket. */
+	imap = fire_ino_to_imap(pbm_regs, ino);
+	iclr = fire_ino_to_iclr(pbm_regs, ino);
+
+	/* Set the interrupt controller number.  */
+	int_ctrlr = 1 << 6;
+	upa_writeq(int_ctrlr, imap);
+
+	/* The interrupt map registers do not have an INO field
+	 * like other chips do.  They return zero in the INO
+	 * field, and the interrupt controller number is controlled
+	 * in bits 6 to 9.  So in order for build_irq() to get
+	 * the INO right we pass it in as part of the fixup
+	 * which will get added to the map register zero value
+	 * read by build_irq().
+	 */
+	ino |= (irq_data->portid << 6);
+	ino -= int_ctrlr;
+	return build_irq(ino, iclr, imap);
+}
+
+static void __init fire_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+	struct fire_irq_data *irq_data;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = fire_irq_build;
+
+	irq_data = prom_early_alloc(sizeof(struct fire_irq_data));
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = irq_data;
+
+	irq_data->pbm_regs = regs[0].phys_addr;
+	irq_data->portid = of_getintprop_default(dp, "portid", 0);
+}
+#endif /* CONFIG_PCI */
+
+#ifdef CONFIG_SBUS
+/* INO number to IMAP register offset for SYSIO external IRQ's.
+ * This should conform to both Sunfire/Wildfire server and Fusion
+ * desktop designs.
+ */
+#define SYSIO_IMAP_SLOT0	0x2c00UL
+#define SYSIO_IMAP_SLOT1	0x2c08UL
+#define SYSIO_IMAP_SLOT2	0x2c10UL
+#define SYSIO_IMAP_SLOT3	0x2c18UL
+#define SYSIO_IMAP_SCSI		0x3000UL
+#define SYSIO_IMAP_ETH		0x3008UL
+#define SYSIO_IMAP_BPP		0x3010UL
+#define SYSIO_IMAP_AUDIO	0x3018UL
+#define SYSIO_IMAP_PFAIL	0x3020UL
+#define SYSIO_IMAP_KMS		0x3028UL
+#define SYSIO_IMAP_FLPY		0x3030UL
+#define SYSIO_IMAP_SHW		0x3038UL
+#define SYSIO_IMAP_KBD		0x3040UL
+#define SYSIO_IMAP_MS		0x3048UL
+#define SYSIO_IMAP_SER		0x3050UL
+#define SYSIO_IMAP_TIM0		0x3060UL
+#define SYSIO_IMAP_TIM1		0x3068UL
+#define SYSIO_IMAP_UE		0x3070UL
+#define SYSIO_IMAP_CE		0x3078UL
+#define SYSIO_IMAP_SBERR	0x3080UL
+#define SYSIO_IMAP_PMGMT	0x3088UL
+#define SYSIO_IMAP_GFX		0x3090UL
+#define SYSIO_IMAP_EUPA		0x3098UL
+
+#define bogon     ((unsigned long) -1)
+static unsigned long sysio_irq_offsets[] = {
+	/* SBUS Slot 0 --> 3, level 1 --> 7 */
+	SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
+	SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
+	SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
+	SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
+	SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
+	SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
+	SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
+	SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
+
+	/* Onboard devices (not relevant/used on SunFire). */
+	SYSIO_IMAP_SCSI,
+	SYSIO_IMAP_ETH,
+	SYSIO_IMAP_BPP,
+	bogon,
+	SYSIO_IMAP_AUDIO,
+	SYSIO_IMAP_PFAIL,
+	bogon,
+	bogon,
+	SYSIO_IMAP_KMS,
+	SYSIO_IMAP_FLPY,
+	SYSIO_IMAP_SHW,
+	SYSIO_IMAP_KBD,
+	SYSIO_IMAP_MS,
+	SYSIO_IMAP_SER,
+	bogon,
+	bogon,
+	SYSIO_IMAP_TIM0,
+	SYSIO_IMAP_TIM1,
+	bogon,
+	bogon,
+	SYSIO_IMAP_UE,
+	SYSIO_IMAP_CE,
+	SYSIO_IMAP_SBERR,
+	SYSIO_IMAP_PMGMT,
+	SYSIO_IMAP_GFX,
+	SYSIO_IMAP_EUPA,
+};
+
+#undef bogon
+
+#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
+
+/* Convert Interrupt Mapping register pointer to associated
+ * Interrupt Clear register pointer, SYSIO specific version.
+ */
+#define SYSIO_ICLR_UNUSED0	0x3400UL
+#define SYSIO_ICLR_SLOT0	0x3408UL
+#define SYSIO_ICLR_SLOT1	0x3448UL
+#define SYSIO_ICLR_SLOT2	0x3488UL
+#define SYSIO_ICLR_SLOT3	0x34c8UL
+static unsigned long sysio_imap_to_iclr(unsigned long imap)
+{
+	unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
+	return imap + diff;
+}
+
+static unsigned int sbus_of_build_irq(struct device_node *dp,
+				      unsigned int ino,
+				      void *_data)
+{
+	unsigned long reg_base = (unsigned long) _data;
+	const struct linux_prom_registers *regs;
+	unsigned long imap, iclr;
+	int sbus_slot = 0;
+	int sbus_level = 0;
+
+	ino &= 0x3f;
+
+	regs = of_get_property(dp, "reg", NULL);
+	if (regs)
+		sbus_slot = regs->which_io;
+
+	if (ino < 0x20)
+		ino += (sbus_slot * 8);
+
+	imap = sysio_irq_offsets[ino];
+	if (imap == ((unsigned long)-1)) {
+		prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
+			    ino);
+		prom_halt();
+	}
+	imap += reg_base;
+
+	/* SYSIO inconsistency.  For external SLOTS, we have to select
+	 * the right ICLR register based upon the lower SBUS irq level
+	 * bits.
+	 */
+	if (ino >= 0x20) {
+		iclr = sysio_imap_to_iclr(imap);
+	} else {
+		sbus_level = ino & 0x7;
+
+		switch(sbus_slot) {
+		case 0:
+			iclr = reg_base + SYSIO_ICLR_SLOT0;
+			break;
+		case 1:
+			iclr = reg_base + SYSIO_ICLR_SLOT1;
+			break;
+		case 2:
+			iclr = reg_base + SYSIO_ICLR_SLOT2;
+			break;
+		default:
+		case 3:
+			iclr = reg_base + SYSIO_ICLR_SLOT3;
+			break;
+		};
+
+		iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
+	}
+	return build_irq(sbus_level, iclr, imap);
+}
+
+static void __init sbus_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = sbus_of_build_irq;
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = (void *) (unsigned long) regs->phys_addr;
+}
+#endif /* CONFIG_SBUS */
+
+
+static unsigned int central_build_irq(struct device_node *dp,
+				      unsigned int ino,
+				      void *_data)
+{
+	struct device_node *central_dp = _data;
+	struct of_device *central_op = of_find_device_by_node(central_dp);
+	struct resource *res;
+	unsigned long imap, iclr;
+	u32 tmp;
+
+	if (!strcmp(dp->name, "eeprom")) {
+		res = &central_op->resource[5];
+	} else if (!strcmp(dp->name, "zs")) {
+		res = &central_op->resource[4];
+	} else if (!strcmp(dp->name, "clock-board")) {
+		res = &central_op->resource[3];
+	} else {
+		return ino;
+	}
+
+	imap = res->start + 0x00UL;
+	iclr = res->start + 0x10UL;
+
+	/* Set the INO state to idle, and disable.  */
+	upa_writel(0, iclr);
+	upa_readl(iclr);
+
+	tmp = upa_readl(imap);
+	tmp &= ~0x80000000;
+	upa_writel(tmp, imap);
+
+	return build_irq(0, iclr, imap);
+}
+
+static void __init central_irq_trans_init(struct device_node *dp)
+{
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = central_build_irq;
+
+	dp->irq_trans->data = dp;
+}
+
+struct irq_trans {
+	const char *name;
+	void (*init)(struct device_node *);
+};
+
+#ifdef CONFIG_PCI
+static struct irq_trans __initdata pci_irq_trans_table[] = {
+	{ "SUNW,sabre", sabre_irq_trans_init },
+	{ "pci108e,a000", sabre_irq_trans_init },
+	{ "pci108e,a001", sabre_irq_trans_init },
+	{ "SUNW,psycho", psycho_irq_trans_init },
+	{ "pci108e,8000", psycho_irq_trans_init },
+	{ "SUNW,schizo", schizo_irq_trans_init },
+	{ "pci108e,8001", schizo_irq_trans_init },
+	{ "SUNW,schizo+", schizo_irq_trans_init },
+	{ "pci108e,8002", schizo_irq_trans_init },
+	{ "SUNW,tomatillo", tomatillo_irq_trans_init },
+	{ "pci108e,a801", tomatillo_irq_trans_init },
+	{ "SUNW,sun4v-pci", pci_sun4v_irq_trans_init },
+	{ "pciex108e,80f0", fire_irq_trans_init },
+};
+#endif
+
+static unsigned int sun4v_vdev_irq_build(struct device_node *dp,
+					 unsigned int devino,
+					 void *_data)
+{
+	u32 devhandle = (u32) (unsigned long) _data;
+
+	return sun4v_build_irq(devhandle, devino);
+}
+
+static void __init sun4v_vdev_irq_trans_init(struct device_node *dp)
+{
+	const struct linux_prom64_registers *regs;
+
+	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
+	dp->irq_trans->irq_build = sun4v_vdev_irq_build;
+
+	regs = of_get_property(dp, "reg", NULL);
+	dp->irq_trans->data = (void *) (unsigned long)
+		((regs->phys_addr >> 32UL) & 0x0fffffff);
+}
+
+void __init irq_trans_init(struct device_node *dp)
+{
+#ifdef CONFIG_PCI
+	const char *model;
+	int i;
+#endif
+
+#ifdef CONFIG_PCI
+	model = of_get_property(dp, "model", NULL);
+	if (!model)
+		model = of_get_property(dp, "compatible", NULL);
+	if (model) {
+		for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
+			struct irq_trans *t = &pci_irq_trans_table[i];
+
+			if (!strcmp(model, t->name)) {
+				t->init(dp);
+				return;
+			}
+		}
+	}
+#endif
+#ifdef CONFIG_SBUS
+	if (!strcmp(dp->name, "sbus") ||
+	    !strcmp(dp->name, "sbi")) {
+		sbus_irq_trans_init(dp);
+		return;
+	}
+#endif
+	if (!strcmp(dp->name, "fhc") &&
+	    !strcmp(dp->parent->name, "central")) {
+		central_irq_trans_init(dp);
+		return;
+	}
+	if (!strcmp(dp->name, "virtual-devices") ||
+	    !strcmp(dp->name, "niu")) {
+		sun4v_vdev_irq_trans_init(dp);
+		return;
+	}
+}