powerpc: Move iSeries_irq.c to powerpc/platorms/iseries

And rename it to irq.c.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

2 files changed, 1 insertions, 368 deletions

diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile
index 8473a878456..2ff5d490e72 100644
--- a/arch/ppc64/kernel/Makefile
+++ b/arch/ppc64/kernel/Makefile
@@ -16,8 +16,7 @@ obj-y += vdso32/ vdso64/
 
 obj-$(CONFIG_PPC_OF) +=	of_device.o
 
-pci-obj-$(CONFIG_PPC_ISERIES)	+= iSeries_irq.o \
-				iSeries_VpdInfo.o
+pci-obj-$(CONFIG_PPC_ISERIES)	+= iSeries_VpdInfo.o
 pci-obj-$(CONFIG_PPC_MULTIPLATFORM)	+= pci_dn.o pci_direct_iommu.o
 
 obj-$(CONFIG_PCI)	+= pci.o pci_iommu.o iomap.o $(pci-obj-y)
diff --git a/arch/ppc64/kernel/iSeries_irq.c b/arch/ppc64/kernel/iSeries_irq.c
deleted file mode 100644
index 0170682a8ca..00000000000
--- a/arch/ppc64/kernel/iSeries_irq.c
+++ /dev/null
@@ -1,366 +0,0 @@
-/*
- * This module supports the iSeries PCI bus interrupt handling
- * Copyright (C) 20yy  <Robert L Holtorf> <IBM Corp>
- * Copyright (C) 2004-2005 IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the:
- * Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330,
- * Boston, MA  02111-1307  USA
- *
- * Change Activity:
- *   Created, December 13, 2000 by Wayne Holm
- * End Change Activity
- */
-#include <linux/config.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/smp.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/bootmem.h>
-#include <linux/ide.h>
-#include <linux/irq.h>
-#include <linux/spinlock.h>
-
-#include <asm/ppcdebug.h>
-#include <asm/iSeries/HvTypes.h>
-#include <asm/iSeries/HvLpEvent.h>
-#include <asm/iSeries/HvCallPci.h>
-#include <asm/iSeries/HvCallXm.h>
-#include <asm/iSeries/iSeries_irq.h>
-
-/* This maps virtual irq numbers to real irqs */
-unsigned int virt_irq_to_real_map[NR_IRQS];
-
-/* The next available virtual irq number */
-/* Note: the pcnet32 driver assumes irq numbers < 2 aren't valid. :( */
-static int next_virtual_irq = 2;
-
-static long Pci_Interrupt_Count;
-static long Pci_Event_Count;
-
-enum XmPciLpEvent_Subtype {
-	XmPciLpEvent_BusCreated		= 0,	// PHB has been created
-	XmPciLpEvent_BusError		= 1,	// PHB has failed
-	XmPciLpEvent_BusFailed		= 2,	// Msg to Secondary, Primary failed bus
-	XmPciLpEvent_NodeFailed		= 4,	// Multi-adapter bridge has failed
-	XmPciLpEvent_NodeRecovered	= 5,	// Multi-adapter bridge has recovered
-	XmPciLpEvent_BusRecovered	= 12,	// PHB has been recovered
-	XmPciLpEvent_UnQuiesceBus	= 18,	// Secondary bus unqiescing
-	XmPciLpEvent_BridgeError	= 21,	// Bridge Error
-	XmPciLpEvent_SlotInterrupt	= 22	// Slot interrupt
-};
-
-struct XmPciLpEvent_BusInterrupt {
-	HvBusNumber	busNumber;
-	HvSubBusNumber	subBusNumber;
-};
-
-struct XmPciLpEvent_NodeInterrupt {
-	HvBusNumber	busNumber;
-	HvSubBusNumber	subBusNumber;
-	HvAgentId	deviceId;
-};
-
-struct XmPciLpEvent {
-	struct HvLpEvent hvLpEvent;
-
-	union {
-		u64 alignData;			// Align on an 8-byte boundary
-
-		struct {
-			u32		fisr;
-			HvBusNumber	busNumber;
-			HvSubBusNumber	subBusNumber;
-			HvAgentId	deviceId;
-		} slotInterrupt;
-
-		struct XmPciLpEvent_BusInterrupt busFailed;
-		struct XmPciLpEvent_BusInterrupt busRecovered;
-		struct XmPciLpEvent_BusInterrupt busCreated;
-
-		struct XmPciLpEvent_NodeInterrupt nodeFailed;
-		struct XmPciLpEvent_NodeInterrupt nodeRecovered;
-
-	} eventData;
-
-};
-
-static void intReceived(struct XmPciLpEvent *eventParm,
-		struct pt_regs *regsParm)
-{
-	int irq;
-
-	++Pci_Interrupt_Count;
-
-	switch (eventParm->hvLpEvent.xSubtype) {
-	case XmPciLpEvent_SlotInterrupt:
-		irq = eventParm->hvLpEvent.xCorrelationToken;
-		/* Dispatch the interrupt handlers for this irq */
-		ppc_irq_dispatch_handler(regsParm, irq);
-		HvCallPci_eoi(eventParm->eventData.slotInterrupt.busNumber,
-			eventParm->eventData.slotInterrupt.subBusNumber,
-			eventParm->eventData.slotInterrupt.deviceId);
-		break;
-		/* Ignore error recovery events for now */
-	case XmPciLpEvent_BusCreated:
-		printk(KERN_INFO "intReceived: system bus %d created\n",
-			eventParm->eventData.busCreated.busNumber);
-		break;
-	case XmPciLpEvent_BusError:
-	case XmPciLpEvent_BusFailed:
-		printk(KERN_INFO "intReceived: system bus %d failed\n",
-			eventParm->eventData.busFailed.busNumber);
-		break;
-	case XmPciLpEvent_BusRecovered:
-	case XmPciLpEvent_UnQuiesceBus:
-		printk(KERN_INFO "intReceived: system bus %d recovered\n",
-			eventParm->eventData.busRecovered.busNumber);
-		break;
-	case XmPciLpEvent_NodeFailed:
-	case XmPciLpEvent_BridgeError:
-		printk(KERN_INFO
-			"intReceived: multi-adapter bridge %d/%d/%d failed\n",
-			eventParm->eventData.nodeFailed.busNumber,
-			eventParm->eventData.nodeFailed.subBusNumber,
-			eventParm->eventData.nodeFailed.deviceId);
-		break;
-	case XmPciLpEvent_NodeRecovered:
-		printk(KERN_INFO
-			"intReceived: multi-adapter bridge %d/%d/%d recovered\n",
-			eventParm->eventData.nodeRecovered.busNumber,
-			eventParm->eventData.nodeRecovered.subBusNumber,
-			eventParm->eventData.nodeRecovered.deviceId);
-		break;
-	default:
-		printk(KERN_ERR
-			"intReceived: unrecognized event subtype 0x%x\n",
-			eventParm->hvLpEvent.xSubtype);
-		break;
-	}
-}
-
-static void XmPciLpEvent_handler(struct HvLpEvent *eventParm,
-		struct pt_regs *regsParm)
-{
-#ifdef CONFIG_PCI
-	++Pci_Event_Count;
-
-	if (eventParm && (eventParm->xType == HvLpEvent_Type_PciIo)) {
-		switch (eventParm->xFlags.xFunction) {
-		case HvLpEvent_Function_Int:
-			intReceived((struct XmPciLpEvent *)eventParm, regsParm);
-			break;
-		case HvLpEvent_Function_Ack:
-			printk(KERN_ERR
-				"XmPciLpEvent_handler: unexpected ack received\n");
-			break;
-		default:
-			printk(KERN_ERR
-				"XmPciLpEvent_handler: unexpected event function %d\n",
-				(int)eventParm->xFlags.xFunction);
-			break;
-		}
-	} else if (eventParm)
-		printk(KERN_ERR
-			"XmPciLpEvent_handler: Unrecognized PCI event type 0x%x\n",
-			(int)eventParm->xType);
-	else
-		printk(KERN_ERR "XmPciLpEvent_handler: NULL event received\n");
-#endif
-}
-
-/*
- * This is called by init_IRQ.  set in ppc_md.init_IRQ by iSeries_setup.c
- * It must be called before the bus walk.
- */
-void __init iSeries_init_IRQ(void)
-{
-	/* Register PCI event handler and open an event path */
-	int xRc;
-
-	xRc = HvLpEvent_registerHandler(HvLpEvent_Type_PciIo,
-			&XmPciLpEvent_handler);
-	if (xRc == 0) {
-		xRc = HvLpEvent_openPath(HvLpEvent_Type_PciIo, 0);
-		if (xRc != 0)
-			printk(KERN_ERR "iSeries_init_IRQ: open event path "
-					"failed with rc 0x%x\n", xRc);
-	} else
-		printk(KERN_ERR "iSeries_init_IRQ: register handler "
-				"failed with rc 0x%x\n", xRc);
-}
-
-#define REAL_IRQ_TO_BUS(irq)	((((irq) >> 6) & 0xff) + 1)
-#define REAL_IRQ_TO_IDSEL(irq)	((((irq) >> 3) & 7) + 1)
-#define REAL_IRQ_TO_FUNC(irq)	((irq) & 7)
-
-/*
- * This will be called by device drivers (via enable_IRQ)
- * to enable INTA in the bridge interrupt status register.
- */
-static void iSeries_enable_IRQ(unsigned int irq)
-{
-	u32 bus, deviceId, function, mask;
-	const u32 subBus = 0;
-	unsigned int rirq = virt_irq_to_real_map[irq];
-
-	/* The IRQ has already been locked by the caller */
-	bus = REAL_IRQ_TO_BUS(rirq);
-	function = REAL_IRQ_TO_FUNC(rirq);
-	deviceId = (REAL_IRQ_TO_IDSEL(rirq) << 4) + function;
-
-	/* Unmask secondary INTA */
-	mask = 0x80000000;
-	HvCallPci_unmaskInterrupts(bus, subBus, deviceId, mask);
-	PPCDBG(PPCDBG_BUSWALK, "iSeries_enable_IRQ 0x%02X.%02X.%02X 0x%04X\n",
-			bus, subBus, deviceId, irq);
-}
-
-/* This is called by iSeries_activate_IRQs */
-static unsigned int iSeries_startup_IRQ(unsigned int irq)
-{
-	u32 bus, deviceId, function, mask;
-	const u32 subBus = 0;
-	unsigned int rirq = virt_irq_to_real_map[irq];
-
-	bus = REAL_IRQ_TO_BUS(rirq);
-	function = REAL_IRQ_TO_FUNC(rirq);
-	deviceId = (REAL_IRQ_TO_IDSEL(rirq) << 4) + function;
-
-	/* Link the IRQ number to the bridge */
-	HvCallXm_connectBusUnit(bus, subBus, deviceId, irq);
-
-	/* Unmask bridge interrupts in the FISR */
-	mask = 0x01010000 << function;
-	HvCallPci_unmaskFisr(bus, subBus, deviceId, mask);
-	iSeries_enable_IRQ(irq);
-	return 0;
-}
-
-/*
- * This is called out of iSeries_fixup to activate interrupt
- * generation for usable slots
- */
-void __init iSeries_activate_IRQs()
-{
-	int irq;
-	unsigned long flags;
-
-	for_each_irq (irq) {
-		irq_desc_t *desc = get_irq_desc(irq);
-
-		if (desc && desc->handler && desc->handler->startup) {
-			spin_lock_irqsave(&desc->lock, flags);
-			desc->handler->startup(irq);
-			spin_unlock_irqrestore(&desc->lock, flags);
-		}
-	}
-}
-
-/*  this is not called anywhere currently */
-static void iSeries_shutdown_IRQ(unsigned int irq)
-{
-	u32 bus, deviceId, function, mask;
-	const u32 subBus = 0;
-	unsigned int rirq = virt_irq_to_real_map[irq];
-
-	/* irq should be locked by the caller */
-	bus = REAL_IRQ_TO_BUS(rirq);
-	function = REAL_IRQ_TO_FUNC(rirq);
-	deviceId = (REAL_IRQ_TO_IDSEL(rirq) << 4) + function;
-
-	/* Invalidate the IRQ number in the bridge */
-	HvCallXm_connectBusUnit(bus, subBus, deviceId, 0);
-
-	/* Mask bridge interrupts in the FISR */
-	mask = 0x01010000 << function;
-	HvCallPci_maskFisr(bus, subBus, deviceId, mask);
-}
-
-/*
- * This will be called by device drivers (via disable_IRQ)
- * to disable INTA in the bridge interrupt status register.
- */
-static void iSeries_disable_IRQ(unsigned int irq)
-{
-	u32 bus, deviceId, function, mask;
-	const u32 subBus = 0;
-	unsigned int rirq = virt_irq_to_real_map[irq];
-
-	/* The IRQ has already been locked by the caller */
-	bus = REAL_IRQ_TO_BUS(rirq);
-	function = REAL_IRQ_TO_FUNC(rirq);
-	deviceId = (REAL_IRQ_TO_IDSEL(rirq) << 4) + function;
-
-	/* Mask secondary INTA   */
-	mask = 0x80000000;
-	HvCallPci_maskInterrupts(bus, subBus, deviceId, mask);
-	PPCDBG(PPCDBG_BUSWALK, "iSeries_disable_IRQ 0x%02X.%02X.%02X 0x%04X\n",
-			bus, subBus, deviceId, irq);
-}
-
-/*
- * Need to define this so ppc_irq_dispatch_handler will NOT call
- * enable_IRQ at the end of interrupt handling.  However, this does
- * nothing because there is not enough information provided to do
- * the EOI HvCall.  This is done by XmPciLpEvent.c
- */
-static void iSeries_end_IRQ(unsigned int irq)
-{
-}
-
-static hw_irq_controller iSeries_IRQ_handler = {
-	.typename = "iSeries irq controller",
-	.startup = iSeries_startup_IRQ,
-	.shutdown = iSeries_shutdown_IRQ,
-	.enable = iSeries_enable_IRQ,
-	.disable = iSeries_disable_IRQ,
-	.end = iSeries_end_IRQ
-};
-
-/*
- * This is called out of iSeries_scan_slot to allocate an IRQ for an EADS slot
- * It calculates the irq value for the slot.
- * Note that subBusNumber is always 0 (at the moment at least).
- */
-int __init iSeries_allocate_IRQ(HvBusNumber busNumber,
-		HvSubBusNumber subBusNumber, HvAgentId deviceId)
-{
-	unsigned int realirq, virtirq;
-	u8 idsel = (deviceId >> 4);
-	u8 function = deviceId & 7;
-
-	virtirq = next_virtual_irq++;
-	realirq = ((busNumber - 1) << 6) + ((idsel - 1) << 3) + function;
-	virt_irq_to_real_map[virtirq] = realirq;
-
-	irq_desc[virtirq].handler = &iSeries_IRQ_handler;
-	return virtirq;
-}
-
-int virt_irq_create_mapping(unsigned int real_irq)
-{
-	BUG(); /* Don't call this on iSeries, yet */
-
-	return 0;
-}
-
-void virt_irq_init(void)
-{
-	return;
-}
-