/*
- * File XmPciLpEvent.h created by Wayne Holm on Mon Jan 15 2001.
+ * File XmPciLpEvent.c created by Wayne Holm on Mon Jan 15 2001.
*
* This module handles PCI interrupt events sent by the iSeries Hypervisor.
-*/
-
+ */
#include <linux/config.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/iSeries/HvTypes.h>
#include <asm/iSeries/HvLpEvent.h>
#include <asm/iSeries/HvCallPci.h>
-#include <asm/iSeries/XmPciLpEvent.h>
+#include <asm/iSeries/iSeries_irq.h>
#include <asm/ppcdebug.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
+ 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 {
};
-static void intReceived(struct XmPciLpEvent *eventParm,
- struct pt_regs *regsParm);
-
-static void XmPciLpEvent_handler(struct HvLpEvent *eventParm,
- struct pt_regs *regsParm)
-{
-#ifdef CONFIG_PCI
-#if 0
- PPCDBG(PPCDBG_BUSWALK, "XmPciLpEvent_handler, type 0x%x\n",
- eventParm->xType);
-#endif
- ++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.c: unexpected ack received\n");
- break;
- default:
- printk(KERN_ERR
- "XmPciLpEvent.c: unexpected event function %d\n",
- (int)eventParm->xFlags.xFunction);
- break;
- }
- } else if (eventParm)
- printk(KERN_ERR
- "XmPciLpEvent.c: Unrecognized PCI event type 0x%x\n",
- (int)eventParm->xType);
- else
- printk(KERN_ERR "XmPciLpEvent.c: NULL event received\n");
-#endif
-}
-
static void intReceived(struct XmPciLpEvent *eventParm,
struct pt_regs *regsParm)
{
}
}
+static void XmPciLpEvent_handler(struct HvLpEvent *eventParm,
+ struct pt_regs *regsParm)
+{
+#ifdef CONFIG_PCI
+#if 0
+ PPCDBG(PPCDBG_BUSWALK, "XmPciLpEvent_handler, type 0x%x\n",
+ eventParm->xType);
+#endif
+ ++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.c: unexpected ack received\n");
+ break;
+ default:
+ printk(KERN_ERR
+ "XmPciLpEvent.c: unexpected event function %d\n",
+ (int)eventParm->xFlags.xFunction);
+ break;
+ }
+ } else if (eventParm)
+ printk(KERN_ERR
+ "XmPciLpEvent.c: Unrecognized PCI event type 0x%x\n",
+ (int)eventParm->xType);
+ else
+ printk(KERN_ERR "XmPciLpEvent.c: NULL event received\n");
+#endif
+}
/* This should be called sometime prior to buswalk (init_IRQ would be good) */
int XmPciLpEvent_init()
if (xRc == 0) {
xRc = HvLpEvent_openPath(HvLpEvent_Type_PciIo, 0);
if (xRc != 0)
- printk(KERN_ERR
- "XmPciLpEvent.c: open event path failed with rc 0x%x\n",
- xRc);
+ printk(KERN_ERR "XmPciLpEvent.c: open event path "
+ "failed with rc 0x%x\n", xRc);
} else
- printk(KERN_ERR
- "XmPciLpEvent.c: register handler failed with rc 0x%x\n",
- xRc);
+ printk(KERN_ERR "XmPciLpEvent.c: register handler "
+ "failed with rc 0x%x\n", xRc);
return xRc;
}
-/************************************************************************/
-/* This module supports the iSeries PCI bus interrupt handling */
-/* Copyright (C) 20yy <Robert L Holtorf> <IBM Corp> */
-/* */
-/* 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 */
-/************************************************************************/
+/*
+ * This module supports the iSeries PCI bus interrupt handling
+ * Copyright (C) 20yy <Robert L Holtorf> <IBM Corp>
+ *
+ * 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/pci.h>
#include <linux/init.h>
#include <linux/threads.h>
#include <asm/iSeries/HvCallPci.h>
#include <asm/iSeries/HvCallXm.h>
#include <asm/iSeries/iSeries_irq.h>
-#include <asm/iSeries/XmPciLpEvent.h>
-
-static unsigned int iSeries_startup_IRQ(unsigned int irq);
-static void iSeries_shutdown_IRQ(unsigned int irq);
-static void iSeries_enable_IRQ(unsigned int irq);
-static void iSeries_disable_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
-};
/* This maps virtual irq numbers to real irqs */
unsigned int virt_irq_to_real_map[NR_IRQS];
XmPciLpEvent_init();
}
+#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 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).
+ * This will be called by device drivers (via enable_IRQ)
+ * to enable INTA in the bridge interrupt status register.
*/
-int __init iSeries_allocate_IRQ(HvBusNumber busNumber,
- HvSubBusNumber subBusNumber, HvAgentId deviceId)
+static void iSeries_enable_IRQ(unsigned int irq)
{
- unsigned int realirq, virtirq;
- u8 idsel = (deviceId >> 4);
- u8 function = deviceId & 7;
+ u32 bus, deviceId, function, mask;
+ const u32 subBus = 0;
+ unsigned int rirq = virt_irq_to_real_map[irq];
- virtirq = next_virtual_irq++;
- realirq = ((busNumber - 1) << 6) + ((idsel - 1) << 3) + function;
- virt_irq_to_real_map[virtirq] = realirq;
+ /* 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;
- irq_desc[virtirq].handler = &iSeries_IRQ_handler;
- return virtirq;
+ /* 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);
}
-#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 is called by iSeries_activate_IRQs */
static unsigned int iSeries_startup_IRQ(unsigned int irq)
{
desc->handler->startup(irq);
spin_unlock_irqrestore(&desc->lock, flags);
}
- }
+ }
}
/* this is not called anywhere currently */
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);
-}
-
-/*
- * 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);
+ bus, subBus, deviceId, 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
+};
+
+/*
+ * 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;
+}
projects / linux-2.6 / commitdiff