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-rw-r--r--arch/powerpc/platforms/iseries/irq.c260
1 files changed, 118 insertions, 142 deletions
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index a58daa15368..cc6a266e766 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -42,69 +42,50 @@
#include "irq.h"
#include "call_pci.h"
-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
+enum pci_event_type {
+ pe_bus_created = 0, /* PHB has been created */
+ pe_bus_error = 1, /* PHB has failed */
+ pe_bus_failed = 2, /* Msg to Secondary, Primary failed bus */
+ pe_node_failed = 4, /* Multi-adapter bridge has failed */
+ pe_node_recovered = 5, /* Multi-adapter bridge has recovered */
+ pe_bus_recovered = 12, /* PHB has been recovered */
+ pe_unquiese_bus = 18, /* Secondary bus unqiescing */
+ pe_bridge_error = 21, /* Bridge Error */
+ pe_slot_interrupt = 22 /* Slot interrupt */
};
-struct XmPciLpEvent_BusInterrupt {
- HvBusNumber busNumber;
- HvSubBusNumber subBusNumber;
-};
-
-struct XmPciLpEvent_NodeInterrupt {
- HvBusNumber busNumber;
- HvSubBusNumber subBusNumber;
- HvAgentId deviceId;
-};
-
-struct XmPciLpEvent {
- struct HvLpEvent hvLpEvent;
-
+struct pci_event {
+ struct HvLpEvent event;
union {
- u64 alignData; // Align on an 8-byte boundary
-
+ u64 __align; /* 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;
-
+ HvBusNumber bus_number;
+ HvSubBusNumber sub_bus_number;
+ HvAgentId dev_id;
+ } slot;
+ struct {
+ HvBusNumber bus_number;
+ HvSubBusNumber sub_bus_number;
+ } bus;
+ struct {
+ HvBusNumber bus_number;
+ HvSubBusNumber sub_bus_number;
+ HvAgentId dev_id;
+ } node;
+ } data;
};
-static void intReceived(struct XmPciLpEvent *eventParm,
- struct pt_regs *regsParm)
+static void int_received(struct pci_event *event, struct pt_regs *regs)
{
int irq;
#ifdef CONFIG_IRQSTACKS
struct thread_info *curtp, *irqtp;
#endif
- ++Pci_Interrupt_Count;
-
- switch (eventParm->hvLpEvent.xSubtype) {
- case XmPciLpEvent_SlotInterrupt:
- irq = eventParm->hvLpEvent.xCorrelationToken;
+ switch (event->event.xSubtype) {
+ case pe_slot_interrupt:
+ irq = event->event.xCorrelationToken;
/* Dispatch the interrupt handlers for this irq */
#ifdef CONFIG_IRQSTACKS
/* Switch to the irq stack to handle this */
@@ -113,83 +94,78 @@ static void intReceived(struct XmPciLpEvent *eventParm,
if (curtp != irqtp) {
irqtp->task = curtp->task;
irqtp->flags = 0;
- call___do_IRQ(irq, regsParm, irqtp);
+ call___do_IRQ(irq, regs, irqtp);
irqtp->task = NULL;
if (irqtp->flags)
set_bits(irqtp->flags, &curtp->flags);
} else
#endif
- __do_IRQ(irq, regsParm);
- HvCallPci_eoi(eventParm->eventData.slotInterrupt.busNumber,
- eventParm->eventData.slotInterrupt.subBusNumber,
- eventParm->eventData.slotInterrupt.deviceId);
+ __do_IRQ(irq, regs);
+ HvCallPci_eoi(event->data.slot.bus_number,
+ event->data.slot.sub_bus_number,
+ event->data.slot.dev_id);
break;
/* Ignore error recovery events for now */
- case XmPciLpEvent_BusCreated:
- printk(KERN_INFO "intReceived: system bus %d created\n",
- eventParm->eventData.busCreated.busNumber);
+ case pe_bus_created:
+ printk(KERN_INFO "int_received: system bus %d created\n",
+ event->data.bus.bus_number);
break;
- case XmPciLpEvent_BusError:
- case XmPciLpEvent_BusFailed:
- printk(KERN_INFO "intReceived: system bus %d failed\n",
- eventParm->eventData.busFailed.busNumber);
+ case pe_bus_error:
+ case pe_bus_failed:
+ printk(KERN_INFO "int_received: system bus %d failed\n",
+ event->data.bus.bus_number);
break;
- case XmPciLpEvent_BusRecovered:
- case XmPciLpEvent_UnQuiesceBus:
- printk(KERN_INFO "intReceived: system bus %d recovered\n",
- eventParm->eventData.busRecovered.busNumber);
+ case pe_bus_recovered:
+ case pe_unquiese_bus:
+ printk(KERN_INFO "int_received: system bus %d recovered\n",
+ event->data.bus.bus_number);
break;
- case XmPciLpEvent_NodeFailed:
- case XmPciLpEvent_BridgeError:
+ case pe_node_failed:
+ case pe_bridge_error:
printk(KERN_INFO
- "intReceived: multi-adapter bridge %d/%d/%d failed\n",
- eventParm->eventData.nodeFailed.busNumber,
- eventParm->eventData.nodeFailed.subBusNumber,
- eventParm->eventData.nodeFailed.deviceId);
+ "int_received: multi-adapter bridge %d/%d/%d failed\n",
+ event->data.node.bus_number,
+ event->data.node.sub_bus_number,
+ event->data.node.dev_id);
break;
- case XmPciLpEvent_NodeRecovered:
+ case pe_node_recovered:
printk(KERN_INFO
- "intReceived: multi-adapter bridge %d/%d/%d recovered\n",
- eventParm->eventData.nodeRecovered.busNumber,
- eventParm->eventData.nodeRecovered.subBusNumber,
- eventParm->eventData.nodeRecovered.deviceId);
+ "int_received: multi-adapter bridge %d/%d/%d recovered\n",
+ event->data.node.bus_number,
+ event->data.node.sub_bus_number,
+ event->data.node.dev_id);
break;
default:
printk(KERN_ERR
- "intReceived: unrecognized event subtype 0x%x\n",
- eventParm->hvLpEvent.xSubtype);
+ "int_received: unrecognized event subtype 0x%x\n",
+ event->event.xSubtype);
break;
}
}
-static void XmPciLpEvent_handler(struct HvLpEvent *eventParm,
- struct pt_regs *regsParm)
+static void pci_event_handler(struct HvLpEvent *event, struct pt_regs *regs)
{
-#ifdef CONFIG_PCI
- ++Pci_Event_Count;
-
- if (eventParm && (eventParm->xType == HvLpEvent_Type_PciIo)) {
- switch (eventParm->xFlags.xFunction) {
+ if (event && (event->xType == HvLpEvent_Type_PciIo)) {
+ switch (event->xFlags.xFunction) {
case HvLpEvent_Function_Int:
- intReceived((struct XmPciLpEvent *)eventParm, regsParm);
+ int_received((struct pci_event *)event, regs);
break;
case HvLpEvent_Function_Ack:
printk(KERN_ERR
- "XmPciLpEvent_handler: unexpected ack received\n");
+ "pci_event_handler: unexpected ack received\n");
break;
default:
printk(KERN_ERR
- "XmPciLpEvent_handler: unexpected event function %d\n",
- (int)eventParm->xFlags.xFunction);
+ "pci_event_handler: unexpected event function %d\n",
+ (int)event->xFlags.xFunction);
break;
}
- } else if (eventParm)
+ } else if (event)
printk(KERN_ERR
- "XmPciLpEvent_handler: Unrecognized PCI event type 0x%x\n",
- (int)eventParm->xType);
+ "pci_event_handler: Unrecognized PCI event type 0x%x\n",
+ (int)event->xType);
else
- printk(KERN_ERR "XmPciLpEvent_handler: NULL event received\n");
-#endif
+ printk(KERN_ERR "pci_event_handler: NULL event received\n");
}
/*
@@ -199,18 +175,18 @@ static void XmPciLpEvent_handler(struct HvLpEvent *eventParm,
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);
+ int ret;
+
+ ret = HvLpEvent_registerHandler(HvLpEvent_Type_PciIo,
+ &pci_event_handler);
+ if (ret == 0) {
+ ret = HvLpEvent_openPath(HvLpEvent_Type_PciIo, 0);
+ if (ret != 0)
+ printk(KERN_ERR "iseries_init_IRQ: open event path "
+ "failed with rc 0x%x\n", ret);
} else
- printk(KERN_ERR "iSeries_init_IRQ: register handler "
- "failed with rc 0x%x\n", xRc);
+ printk(KERN_ERR "iseries_init_IRQ: register handler "
+ "failed with rc 0x%x\n", ret);
}
#define REAL_IRQ_TO_BUS(irq) ((((irq) >> 6) & 0xff) + 1)
@@ -221,40 +197,40 @@ void __init iSeries_init_IRQ(void)
* 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)
+static void iseries_enable_IRQ(unsigned int irq)
{
- u32 bus, deviceId, function, mask;
- const u32 subBus = 0;
+ u32 bus, dev_id, function, mask;
+ const u32 sub_bus = 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;
+ dev_id = (REAL_IRQ_TO_IDSEL(rirq) << 4) + function;
/* Unmask secondary INTA */
mask = 0x80000000;
- HvCallPci_unmaskInterrupts(bus, subBus, deviceId, mask);
+ HvCallPci_unmaskInterrupts(bus, sub_bus, dev_id, mask);
}
-/* This is called by iSeries_activate_IRQs */
-static unsigned int iSeries_startup_IRQ(unsigned int 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;
+ u32 bus, dev_id, function, mask;
+ const u32 sub_bus = 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;
+ dev_id = (REAL_IRQ_TO_IDSEL(rirq) << 4) + function;
/* Link the IRQ number to the bridge */
- HvCallXm_connectBusUnit(bus, subBus, deviceId, irq);
+ HvCallXm_connectBusUnit(bus, sub_bus, dev_id, irq);
/* Unmask bridge interrupts in the FISR */
mask = 0x01010000 << function;
- HvCallPci_unmaskFisr(bus, subBus, deviceId, mask);
- iSeries_enable_IRQ(irq);
+ HvCallPci_unmaskFisr(bus, sub_bus, dev_id, mask);
+ iseries_enable_IRQ(irq);
return 0;
}
@@ -279,76 +255,76 @@ void __init iSeries_activate_IRQs()
}
/* this is not called anywhere currently */
-static void iSeries_shutdown_IRQ(unsigned int irq)
+static void iseries_shutdown_IRQ(unsigned int irq)
{
- u32 bus, deviceId, function, mask;
- const u32 subBus = 0;
+ u32 bus, dev_id, function, mask;
+ const u32 sub_bus = 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;
+ dev_id = (REAL_IRQ_TO_IDSEL(rirq) << 4) + function;
/* Invalidate the IRQ number in the bridge */
- HvCallXm_connectBusUnit(bus, subBus, deviceId, 0);
+ HvCallXm_connectBusUnit(bus, sub_bus, dev_id, 0);
/* Mask bridge interrupts in the FISR */
mask = 0x01010000 << function;
- HvCallPci_maskFisr(bus, subBus, deviceId, mask);
+ HvCallPci_maskFisr(bus, sub_bus, dev_id, 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)
+static void iseries_disable_IRQ(unsigned int irq)
{
- u32 bus, deviceId, function, mask;
- const u32 subBus = 0;
+ u32 bus, dev_id, function, mask;
+ const u32 sub_bus = 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;
+ dev_id = (REAL_IRQ_TO_IDSEL(rirq) << 4) + function;
/* Mask secondary INTA */
mask = 0x80000000;
- HvCallPci_maskInterrupts(bus, subBus, deviceId, mask);
+ HvCallPci_maskInterrupts(bus, sub_bus, dev_id, mask);
}
/*
* 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 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
+ .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).
+ * Note that sub_bus_number is always 0 (at the moment at least).
*/
-int __init iSeries_allocate_IRQ(HvBusNumber busNumber,
- HvSubBusNumber subBusNumber, HvAgentId deviceId)
+int __init iSeries_allocate_IRQ(HvBusNumber bus_number,
+ HvSubBusNumber sub_bus_number, HvAgentId dev_id)
{
int virtirq;
unsigned int realirq;
- u8 idsel = (deviceId >> 4);
- u8 function = deviceId & 7;
+ u8 idsel = (dev_id >> 4);
+ u8 function = dev_id & 7;
- realirq = ((busNumber - 1) << 6) + ((idsel - 1) << 3) + function;
+ realirq = ((bus_number - 1) << 6) + ((idsel - 1) << 3) + function;
virtirq = virt_irq_create_mapping(realirq);
irq_desc[virtirq].handler = &iSeries_IRQ_handler;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-27 10:44:54 +0000