From 5388fb1025443ec223ba556b10efc4c5f83f8682 Mon Sep 17 00:00:00 2001
From: Paul Mackerras <paulus@samba.org>
Date: Wed, 11 Jan 2006 22:11:39 +1100
Subject: [PATCH] powerpc: Avoid potential FP corruption with preempt and UP

Heikki Lindholm pointed out that there was a potential race with the
lazy CPU state (FP, VR, EVR) stuff if preempt is enabled.  The race
is that in the process of restoring FP state on sigreturn, the task
gets preempted by a user task that wants to use the FPU.  It will take
an FP unavailable exception, which will write the current FPU state
to the thread_struct, overwriting the values which sigreturn has
stored.  Note that this can only happen on UP since we don't implement
lazy CPU state on SMP.

The fix is to flush the lazy CPU state before updating the
thread_struct.  To do this we re-use the flush_lazy_cpu_state()
function from process.c.

Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 include/asm-powerpc/system.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'include')

diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index 0c58e32a9570..4c888303e85b 100644
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -133,6 +133,14 @@ extern int fix_alignment(struct pt_regs *);
 extern void cvt_fd(float *from, double *to, struct thread_struct *thread);
 extern void cvt_df(double *from, float *to, struct thread_struct *thread);
 
+#ifndef CONFIG_SMP
+extern void discard_lazy_cpu_state(void);
+#else
+static inline void discard_lazy_cpu_state(void)
+{
+}
+#endif
+
 #ifdef CONFIG_ALTIVEC
 extern void flush_altivec_to_thread(struct task_struct *);
 #else
-- 
cgit v1.2.3


From 6814350b80e0e7dfb87d2faebbcbef876573897c Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 12 Jan 2006 13:48:52 +1100
Subject: [PATCH] powerpc: remove bitfields from hv_call_event.h

Also does some comment cleanups and removal of unnecessary
variables.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 include/asm-powerpc/iseries/hv_call_event.h | 134 ++++++++--------------------
 1 file changed, 36 insertions(+), 98 deletions(-)

(limited to 'include')

diff --git a/include/asm-powerpc/iseries/hv_call_event.h b/include/asm-powerpc/iseries/hv_call_event.h
index 46763a30590a..4cec4762076d 100644
--- a/include/asm-powerpc/iseries/hv_call_event.h
+++ b/include/asm-powerpc/iseries/hv_call_event.h
@@ -1,5 +1,4 @@
 /*
- * HvCallEvent.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -15,8 +14,7 @@
  * 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
- */
-/*
+ *
  * This file contains the "hypervisor call" interface which is used to
  * drive the hypervisor from the OS.
  */
@@ -33,32 +31,9 @@ typedef u8 HvLpEvent_Type;
 typedef u8 HvLpEvent_AckInd;
 typedef u8 HvLpEvent_AckType;
 
-struct	HvCallEvent_PackedParms {
-	u8		xAckType:1;
-	u8		xAckInd:1;
-	u8		xRsvd:1;
-	u8		xTargetLp:5;
-	u8		xType;
-	u16		xSubtype;
-	HvLpInstanceId	xSourceInstId;
-	HvLpInstanceId	xTargetInstId;
-};
-
 typedef u8 HvLpDma_Direction;
 typedef u8 HvLpDma_AddressType;
 
-struct	HvCallEvent_PackedDmaParms {
-	u8		xDirection:1;
-	u8		xLocalAddrType:1;
-	u8		xRemoteAddrType:1;
-	u8		xRsvd1:5;
-	HvLpIndex	xRemoteLp;
-	u8		xType;
-	u8		xRsvd2;
-	HvLpInstanceId	xLocalInstId;
-	HvLpInstanceId	xRemoteInstId;
-};
-
 typedef u64 HvLpEvent_Rc;
 typedef u64 HvLpDma_Rc;
 
@@ -92,11 +67,8 @@ static inline void HvCallEvent_setInterLpQueueIndex(u8 queueIndex)
 static inline void HvCallEvent_setLpEventStack(u8 queueIndex,
 		char *eventStackAddr, u32 eventStackSize)
 {
-	u64 abs_addr;
-
-	abs_addr = virt_to_abs(eventStackAddr);
-	HvCall3(HvCallEventSetLpEventStack, queueIndex, abs_addr,
-			eventStackSize);
+	HvCall3(HvCallEventSetLpEventStack, queueIndex,
+			virt_to_abs(eventStackAddr), eventStackSize);
 }
 
 static inline void HvCallEvent_setLpEventQueueInterruptProc(u8 queueIndex,
@@ -108,14 +80,7 @@ static inline void HvCallEvent_setLpEventQueueInterruptProc(u8 queueIndex,
 
 static inline HvLpEvent_Rc HvCallEvent_signalLpEvent(struct HvLpEvent *event)
 {
-	u64 abs_addr;
-
-#ifdef DEBUG_SENDEVENT
-	printk("HvCallEvent_signalLpEvent: *event = %016lx\n ",
-			(unsigned long)event);
-#endif
-	abs_addr = virt_to_abs(event);
-	return HvCall1(HvCallEventSignalLpEvent, abs_addr);
+	return HvCall1(HvCallEventSignalLpEvent, virt_to_abs(event));
 }
 
 static inline HvLpEvent_Rc HvCallEvent_signalLpEventFast(HvLpIndex targetLp,
@@ -127,17 +92,21 @@ static inline HvLpEvent_Rc HvCallEvent_signalLpEventFast(HvLpIndex targetLp,
 {
 	/* Pack the misc bits into a single Dword to pass to PLIC */
 	union {
-		struct HvCallEvent_PackedParms	parms;
+		struct {
+			u8		ack_and_target;
+			u8		type;
+			u16		subtype;
+			HvLpInstanceId	src_inst;
+			HvLpInstanceId	target_inst;
+		} parms;
 		u64		dword;
 	} packed;
-	packed.parms.xAckType	= ackType;
-	packed.parms.xAckInd	= ackInd;
-	packed.parms.xRsvd	= 0;
-	packed.parms.xTargetLp	= targetLp;
-	packed.parms.xType	= type;
-	packed.parms.xSubtype	= subtype;
-	packed.parms.xSourceInstId	= sourceInstanceId;
-	packed.parms.xTargetInstId	= targetInstanceId;
+
+	packed.parms.ack_and_target = (ackType << 7) | (ackInd << 6) | targetLp;
+	packed.parms.type = type;
+	packed.parms.subtype = subtype;
+	packed.parms.src_inst = sourceInstanceId;
+	packed.parms.target_inst = targetInstanceId;
 
 	return HvCall7(HvCallEventSignalLpEventParms, packed.dword,
 			correlationToken, eventData1, eventData2,
@@ -146,18 +115,12 @@ static inline HvLpEvent_Rc HvCallEvent_signalLpEventFast(HvLpIndex targetLp,
 
 static inline HvLpEvent_Rc HvCallEvent_ackLpEvent(struct HvLpEvent *event)
 {
-	u64 abs_addr;
-
-	abs_addr = virt_to_abs(event);
-	return HvCall1(HvCallEventAckLpEvent, abs_addr);
+	return HvCall1(HvCallEventAckLpEvent, virt_to_abs(event));
 }
 
 static inline HvLpEvent_Rc HvCallEvent_cancelLpEvent(struct HvLpEvent *event)
 {
-	u64 abs_addr;
-
-	abs_addr = virt_to_abs(event);
-	return HvCall1(HvCallEventCancelLpEvent, abs_addr);
+	return HvCall1(HvCallEventCancelLpEvent, virt_to_abs(event));
 }
 
 static inline HvLpInstanceId HvCallEvent_getSourceLpInstanceId(
@@ -195,59 +158,34 @@ static inline HvLpDma_Rc HvCallEvent_dmaBufList(HvLpEvent_Type type,
 {
 	/* Pack the misc bits into a single Dword to pass to PLIC */
 	union {
-		struct HvCallEvent_PackedDmaParms	parms;
+		struct {
+			u8		flags;
+			HvLpIndex	remote;
+			u8		type;
+			u8		reserved;
+			HvLpInstanceId	local_inst;
+			HvLpInstanceId	remote_inst;
+		} parms;
 		u64		dword;
 	} packed;
 
-	packed.parms.xDirection		= direction;
-	packed.parms.xLocalAddrType	= localAddressType;
-	packed.parms.xRemoteAddrType	= remoteAddressType;
-	packed.parms.xRsvd1		= 0;
-	packed.parms.xRemoteLp		= remoteLp;
-	packed.parms.xType		= type;
-	packed.parms.xRsvd2		= 0;
-	packed.parms.xLocalInstId	= localInstanceId;
-	packed.parms.xRemoteInstId	= remoteInstanceId;
+	packed.parms.flags = (direction << 7) |
+		(localAddressType << 6) | (remoteAddressType << 5);
+	packed.parms.remote = remoteLp;
+	packed.parms.type = type;
+	packed.parms.reserved = 0;
+	packed.parms.local_inst = localInstanceId;
+	packed.parms.remote_inst = remoteInstanceId;
 
 	return HvCall4(HvCallEventDmaBufList, packed.dword, localBufList,
 			remoteBufList, transferLength);
 }
 
-static inline HvLpDma_Rc HvCallEvent_dmaSingle(HvLpEvent_Type type,
-		HvLpIndex remoteLp, HvLpDma_Direction direction,
-		HvLpInstanceId localInstanceId,
-		HvLpInstanceId remoteInstanceId,
-		HvLpDma_AddressType localAddressType,
-		HvLpDma_AddressType remoteAddressType,
-		u64 localAddrOrTce, u64 remoteAddrOrTce, u32 transferLength)
-{
-	/* Pack the misc bits into a single Dword to pass to PLIC */
-	union {
-		struct HvCallEvent_PackedDmaParms	parms;
-		u64		dword;
-	} packed;
-
-	packed.parms.xDirection		= direction;
-	packed.parms.xLocalAddrType	= localAddressType;
-	packed.parms.xRemoteAddrType	= remoteAddressType;
-	packed.parms.xRsvd1		= 0;
-	packed.parms.xRemoteLp		= remoteLp;
-	packed.parms.xType		= type;
-	packed.parms.xRsvd2		= 0;
-	packed.parms.xLocalInstId	= localInstanceId;
-	packed.parms.xRemoteInstId	= remoteInstanceId;
-
-	return (HvLpDma_Rc)HvCall4(HvCallEventDmaSingle, packed.dword,
-			localAddrOrTce, remoteAddrOrTce, transferLength);
-}
-
 static inline HvLpDma_Rc HvCallEvent_dmaToSp(void *local, u32 remote,
 		u32 length, HvLpDma_Direction dir)
 {
-	u64 abs_addr;
-
-	abs_addr = virt_to_abs(local);
-	return HvCall4(HvCallEventDmaToSp, abs_addr, remote, length, dir);
+	return HvCall4(HvCallEventDmaToSp, virt_to_abs(local), remote,
+			length, dir);
 }
 
 #endif /* _ASM_POWERPC_ISERIES_HV_CALL_EVENT_H */
-- 
cgit v1.2.3


From 677f8c0d0455a35aaff08a0292ba9c6232ef4eb1 Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 12 Jan 2006 13:47:43 +1100
Subject: [PATCH] powerpc: remove bitfields from HvLpEvent

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/platforms/iseries/irq.c      | 13 ++--------
 arch/powerpc/platforms/iseries/lpevents.c | 12 ++++-----
 arch/powerpc/platforms/iseries/mf.c       | 16 +++---------
 arch/powerpc/platforms/iseries/viopath.c  | 12 ++++-----
 drivers/block/viodasd.c                   | 32 +++++++++++-------------
 drivers/cdrom/viocd.c                     |  6 ++---
 drivers/char/viocons.c                    | 31 +++++++++++------------
 drivers/net/iseries_veth.c                |  4 +--
 include/asm-powerpc/iseries/hv_lp_event.h | 41 +++++++++++++++++++++++--------
 9 files changed, 82 insertions(+), 85 deletions(-)

(limited to 'include')

diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index 42e978e4897a..3d023856405a 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -147,20 +147,11 @@ static void int_received(struct pci_event *event, struct pt_regs *regs)
 static void pci_event_handler(struct HvLpEvent *event, struct pt_regs *regs)
 {
 	if (event && (event->xType == HvLpEvent_Type_PciIo)) {
-		switch (event->xFlags.xFunction) {
-		case HvLpEvent_Function_Int:
+		if (hvlpevent_is_int(event))
 			int_received((struct pci_event *)event, regs);
-			break;
-		case HvLpEvent_Function_Ack:
+		else
 			printk(KERN_ERR
 				"pci_event_handler: unexpected ack received\n");
-			break;
-		default:
-			printk(KERN_ERR
-				"pci_event_handler: unexpected event function %d\n",
-				(int)event->xFlags.xFunction);
-			break;
-		}
 	} else if (event)
 		printk(KERN_ERR
 			"pci_event_handler: Unrecognized PCI event type 0x%x\n",
diff --git a/arch/powerpc/platforms/iseries/lpevents.c b/arch/powerpc/platforms/iseries/lpevents.c
index e9fb98bf895f..0b885300d1d1 100644
--- a/arch/powerpc/platforms/iseries/lpevents.c
+++ b/arch/powerpc/platforms/iseries/lpevents.c
@@ -53,7 +53,7 @@ static struct HvLpEvent * get_next_hvlpevent(void)
 	struct HvLpEvent * event;
 	event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;
 
-	if (event->xFlags.xValid) {
+	if (hvlpevent_is_valid(event)) {
 		/* rmb() needed only for weakly consistent machines (regatta) */
 		rmb();
 		/* Set pointer to next potential event */
@@ -84,7 +84,7 @@ int hvlpevent_is_pending(void)
 
 	next_event = (struct HvLpEvent *)hvlpevent_queue.xSlicCurEventPtr;
 
-	return next_event->xFlags.xValid |
+	return hvlpevent_is_valid(next_event) ||
 		hvlpevent_queue.xPlicOverflowIntPending;
 }
 
@@ -101,18 +101,18 @@ static void hvlpevent_clear_valid(struct HvLpEvent * event)
 	switch (extra) {
 	case 3:
 		tmp = (struct HvLpEvent*)((char*)event + 3 * LpEventAlign);
-		tmp->xFlags.xValid = 0;
+		hvlpevent_invalidate(tmp);
 	case 2:
 		tmp = (struct HvLpEvent*)((char*)event + 2 * LpEventAlign);
-		tmp->xFlags.xValid = 0;
+		hvlpevent_invalidate(tmp);
 	case 1:
 		tmp = (struct HvLpEvent*)((char*)event + 1 * LpEventAlign);
-		tmp->xFlags.xValid = 0;
+		hvlpevent_invalidate(tmp);
 	}
 
 	mb();
 
-	event->xFlags.xValid = 0;
+	hvlpevent_invalidate(event);
 }
 
 void process_hvlpevents(struct pt_regs *regs)
diff --git a/arch/powerpc/platforms/iseries/mf.c b/arch/powerpc/platforms/iseries/mf.c
index 49e7e4b85847..a41d8b78c0cd 100644
--- a/arch/powerpc/platforms/iseries/mf.c
+++ b/arch/powerpc/platforms/iseries/mf.c
@@ -251,10 +251,7 @@ static struct pending_event *new_pending_event(void)
 	}
 	memset(ev, 0, sizeof(struct pending_event));
 	hev = &ev->event.hp_lp_event;
-	hev->xFlags.xValid = 1;
-	hev->xFlags.xAckType = HvLpEvent_AckType_ImmediateAck;
-	hev->xFlags.xAckInd = HvLpEvent_AckInd_DoAck;
-	hev->xFlags.xFunction = HvLpEvent_Function_Int;
+	hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DO_ACK | HV_LP_EVENT_INT;
 	hev->xType = HvLpEvent_Type_MachineFac;
 	hev->xSourceLp = HvLpConfig_getLpIndex();
 	hev->xTargetLp = primary_lp;
@@ -518,17 +515,10 @@ static void handle_ack(struct io_mf_lp_event *event)
 static void hv_handler(struct HvLpEvent *event, struct pt_regs *regs)
 {
 	if ((event != NULL) && (event->xType == HvLpEvent_Type_MachineFac)) {
-		switch(event->xFlags.xFunction) {
-		case HvLpEvent_Function_Ack:
+		if (hvlpevent_is_ack(event))
 			handle_ack((struct io_mf_lp_event *)event);
-			break;
-		case HvLpEvent_Function_Int:
+		else
 			handle_int((struct io_mf_lp_event *)event);
-			break;
-		default:
-			printk(KERN_ERR "mf.c: non ack/int event received\n");
-			break;
-		}
 	} else
 		printk(KERN_ERR "mf.c: alien event received\n");
 }
diff --git a/arch/powerpc/platforms/iseries/viopath.c b/arch/powerpc/platforms/iseries/viopath.c
index 842672695598..622a30149b48 100644
--- a/arch/powerpc/platforms/iseries/viopath.c
+++ b/arch/powerpc/platforms/iseries/viopath.c
@@ -270,7 +270,7 @@ static void handleMonitorEvent(struct HvLpEvent *event)
 	 * First see if this is just a normal monitor message from the
 	 * other partition
 	 */
-	if (event->xFlags.xFunction == HvLpEvent_Function_Int) {
+	if (hvlpevent_is_int(event)) {
 		remoteLp = event->xSourceLp;
 		if (!viopathStatus[remoteLp].isActive)
 			sendMonMsg(remoteLp);
@@ -331,13 +331,12 @@ static void handleConfig(struct HvLpEvent *event)
 {
 	if (!event)
 		return;
-	if (event->xFlags.xFunction == HvLpEvent_Function_Int) {
+	if (hvlpevent_is_int(event)) {
 		printk(VIOPATH_KERN_WARN
 		       "unexpected config request from partition %d",
 		       event->xSourceLp);
 
-		if ((event->xFlags.xFunction == HvLpEvent_Function_Int) &&
-		    (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck)) {
+		if (hvlpevent_need_ack(event)) {
 			event->xRc = HvLpEvent_Rc_InvalidSubtype;
 			HvCallEvent_ackLpEvent(event);
 		}
@@ -377,7 +376,7 @@ static void vio_handleEvent(struct HvLpEvent *event, struct pt_regs *regs)
 	int subtype = (event->xSubtype & VIOMAJOR_SUBTYPE_MASK)
 		>> VIOMAJOR_SUBTYPE_SHIFT;
 
-	if (event->xFlags.xFunction == HvLpEvent_Function_Int) {
+	if (hvlpevent_is_int(event)) {
 		remoteLp = event->xSourceLp;
 		/*
 		 * The isActive is checked because if the hosting partition
@@ -436,8 +435,7 @@ static void vio_handleEvent(struct HvLpEvent *event, struct pt_regs *regs)
 		       "unexpected virtual io event subtype %d from partition %d\n",
 		       event->xSubtype, remoteLp);
 		/* No handler.  Ack if necessary */
-		if ((event->xFlags.xFunction == HvLpEvent_Function_Int) &&
-		    (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck)) {
+		if (hvlpevent_is_int(event) && hvlpevent_need_ack(event)) {
 			event->xRc = HvLpEvent_Rc_InvalidSubtype;
 			HvCallEvent_ackLpEvent(event);
 		}
diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c
index d1aaf31bd97e..f63e07bd9f9c 100644
--- a/drivers/block/viodasd.c
+++ b/drivers/block/viodasd.c
@@ -293,6 +293,7 @@ static int send_request(struct request *req)
 	u16 viocmd;
 	HvLpEvent_Rc hvrc;
 	struct vioblocklpevent *bevent;
+	struct HvLpEvent *hev;
 	struct scatterlist sg[VIOMAXBLOCKDMA];
 	int sgindex;
 	int statindex;
@@ -347,22 +348,19 @@ static int send_request(struct request *req)
 		 * token so we can match the response up later
 		 */
 		memset(bevent, 0, sizeof(struct vioblocklpevent));
-		bevent->event.xFlags.xValid = 1;
-		bevent->event.xFlags.xFunction = HvLpEvent_Function_Int;
-		bevent->event.xFlags.xAckInd = HvLpEvent_AckInd_DoAck;
-		bevent->event.xFlags.xAckType = HvLpEvent_AckType_ImmediateAck;
-		bevent->event.xType = HvLpEvent_Type_VirtualIo;
-		bevent->event.xSubtype = viocmd;
-		bevent->event.xSourceLp = HvLpConfig_getLpIndex();
-		bevent->event.xTargetLp = viopath_hostLp;
-		bevent->event.xSizeMinus1 =
+		hev = &bevent->event;
+		hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DO_ACK |
+			HV_LP_EVENT_INT;
+		hev->xType = HvLpEvent_Type_VirtualIo;
+		hev->xSubtype = viocmd;
+		hev->xSourceLp = HvLpConfig_getLpIndex();
+		hev->xTargetLp = viopath_hostLp;
+		hev->xSizeMinus1 =
 			offsetof(struct vioblocklpevent, u.rw_data.dma_info) +
 			(sizeof(bevent->u.rw_data.dma_info[0]) * nsg) - 1;
-		bevent->event.xSourceInstanceId =
-			viopath_sourceinst(viopath_hostLp);
-		bevent->event.xTargetInstanceId =
-			viopath_targetinst(viopath_hostLp);
-		bevent->event.xCorrelationToken = (u64)req;
+		hev->xSourceInstanceId = viopath_sourceinst(viopath_hostLp);
+		hev->xTargetInstanceId = viopath_targetinst(viopath_hostLp);
+		hev->xCorrelationToken = (u64)req;
 		bevent->version = VIOVERSION;
 		bevent->disk = DEVICE_NO(d);
 		bevent->u.rw_data.offset = start;
@@ -649,10 +647,10 @@ static void handle_block_event(struct HvLpEvent *event)
 		/* Notification that a partition went away! */
 		return;
 	/* First, we should NEVER get an int here...only acks */
-	if (event->xFlags.xFunction == HvLpEvent_Function_Int) {
+	if (hvlpevent_is_int(event)) {
 		printk(VIOD_KERN_WARNING
 		       "Yikes! got an int in viodasd event handler!\n");
-		if (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck) {
+		if (hvlpevent_need_ack(event)) {
 			event->xRc = HvLpEvent_Rc_InvalidSubtype;
 			HvCallEvent_ackLpEvent(event);
 		}
@@ -695,7 +693,7 @@ static void handle_block_event(struct HvLpEvent *event)
 
 	default:
 		printk(VIOD_KERN_WARNING "invalid subtype!");
-		if (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck) {
+		if (hvlpevent_need_ack(event)) {
 			event->xRc = HvLpEvent_Rc_InvalidSubtype;
 			HvCallEvent_ackLpEvent(event);
 		}
diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c
index b5191780ecca..193446e6a08a 100644
--- a/drivers/cdrom/viocd.c
+++ b/drivers/cdrom/viocd.c
@@ -542,10 +542,10 @@ static void vio_handle_cd_event(struct HvLpEvent *event)
 		/* Notification that a partition went away! */
 		return;
 	/* First, we should NEVER get an int here...only acks */
-	if (event->xFlags.xFunction == HvLpEvent_Function_Int) {
+	if (hvlpevent_is_int(event)) {
 		printk(VIOCD_KERN_WARNING
 				"Yikes! got an int in viocd event handler!\n");
-		if (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck) {
+		if (hvlpevent_need_ack(event)) {
 			event->xRc = HvLpEvent_Rc_InvalidSubtype;
 			HvCallEvent_ackLpEvent(event);
 		}
@@ -616,7 +616,7 @@ return_complete:
 		printk(VIOCD_KERN_WARNING
 				"message with invalid subtype %0x04X!\n",
 				event->xSubtype & VIOMINOR_SUBTYPE_MASK);
-		if (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck) {
+		if (hvlpevent_need_ack(event)) {
 			event->xRc = HvLpEvent_Rc_InvalidSubtype;
 			HvCallEvent_ackLpEvent(event);
 		}
diff --git a/drivers/char/viocons.c b/drivers/char/viocons.c
index faee5e7acaf7..4e5360388748 100644
--- a/drivers/char/viocons.c
+++ b/drivers/char/viocons.c
@@ -476,19 +476,19 @@ static struct port_info *get_port_data(struct tty_struct *tty)
  */
 static void initDataEvent(struct viocharlpevent *viochar, HvLpIndex lp)
 {
+	struct HvLpEvent *hev = &viochar->event;
+
 	memset(viochar, 0, sizeof(struct viocharlpevent));
 
-	viochar->event.xFlags.xValid = 1;
-	viochar->event.xFlags.xFunction = HvLpEvent_Function_Int;
-	viochar->event.xFlags.xAckInd = HvLpEvent_AckInd_NoAck;
-	viochar->event.xFlags.xAckType = HvLpEvent_AckType_DeferredAck;
-	viochar->event.xType = HvLpEvent_Type_VirtualIo;
-	viochar->event.xSubtype = viomajorsubtype_chario | viochardata;
-	viochar->event.xSourceLp = HvLpConfig_getLpIndex();
-	viochar->event.xTargetLp = lp;
-	viochar->event.xSizeMinus1 = sizeof(struct viocharlpevent);
-	viochar->event.xSourceInstanceId = viopath_sourceinst(lp);
-	viochar->event.xTargetInstanceId = viopath_targetinst(lp);
+	hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DEFERRED_ACK |
+		HV_LP_EVENT_INT;
+	hev->xType = HvLpEvent_Type_VirtualIo;
+	hev->xSubtype = viomajorsubtype_chario | viochardata;
+	hev->xSourceLp = HvLpConfig_getLpIndex();
+	hev->xTargetLp = lp;
+	hev->xSizeMinus1 = sizeof(struct viocharlpevent);
+	hev->xSourceInstanceId = viopath_sourceinst(lp);
+	hev->xTargetInstanceId = viopath_targetinst(lp);
 }
 
 /*
@@ -752,7 +752,7 @@ static void vioHandleOpenEvent(struct HvLpEvent *event)
 	struct port_info *pi;
 	int reject = 0;
 
-	if (event->xFlags.xFunction == HvLpEvent_Function_Ack) {
+	if (hvlpevent_is_ack(event)) {
 		if (port >= VTTY_PORTS)
 			return;
 
@@ -788,7 +788,7 @@ static void vioHandleOpenEvent(struct HvLpEvent *event)
 	}
 
 	/* This had better require an ack, otherwise complain */
-	if (event->xFlags.xAckInd != HvLpEvent_AckInd_DoAck) {
+	if (!hvlpevent_need_ack(event)) {
 		printk(VIOCONS_KERN_WARN "viocharopen without ack bit!\n");
 		return;
 	}
@@ -856,7 +856,7 @@ static void vioHandleCloseEvent(struct HvLpEvent *event)
 	struct viocharlpevent *cevent = (struct viocharlpevent *)event;
 	u8 port = cevent->virtual_device;
 
-	if (event->xFlags.xFunction == HvLpEvent_Function_Int) {
+	if (hvlpevent_is_int(event)) {
 		if (port >= VTTY_PORTS) {
 			printk(VIOCONS_KERN_WARN
 					"close message from invalid virtual device.\n");
@@ -1056,8 +1056,7 @@ static void vioHandleCharEvent(struct HvLpEvent *event)
 		vioHandleConfig(event);
 		break;
 	default:
-		if ((event->xFlags.xFunction == HvLpEvent_Function_Int) &&
-		    (event->xFlags.xAckInd == HvLpEvent_AckInd_DoAck)) {
+		if (hvlpevent_is_int(event) && hvlpevent_need_ack(event)) {
 			event->xRc = HvLpEvent_Rc_InvalidSubtype;
 			HvCallEvent_ackLpEvent(event);
 		}
diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c
index 77eadf84cb2c..f0f04be989d6 100644
--- a/drivers/net/iseries_veth.c
+++ b/drivers/net/iseries_veth.c
@@ -590,9 +590,9 @@ static void veth_handle_event(struct HvLpEvent *event, struct pt_regs *regs)
 {
 	struct veth_lpevent *veth_event = (struct veth_lpevent *)event;
 
-	if (event->xFlags.xFunction == HvLpEvent_Function_Ack)
+	if (hvlpevent_is_ack(event))
 		veth_handle_ack(veth_event);
-	else if (event->xFlags.xFunction == HvLpEvent_Function_Int)
+	else
 		veth_handle_int(veth_event);
 }
 
diff --git a/include/asm-powerpc/iseries/hv_lp_event.h b/include/asm-powerpc/iseries/hv_lp_event.h
index 499ab1ad0185..8ee89b67b8fd 100644
--- a/include/asm-powerpc/iseries/hv_lp_event.h
+++ b/include/asm-powerpc/iseries/hv_lp_event.h
@@ -32,17 +32,8 @@
  * partitions through PLIC.
  */
 
-struct HvEventFlags {
-	u8	xValid:1;	/* Indicates a valid request	x00-x00 */
-	u8	xRsvd1:4;	/* Reserved			... */
-	u8	xAckType:1;	/* Immediate or deferred	... */
-	u8	xAckInd:1;	/* Indicates if ACK required	... */
-	u8	xFunction:1;	/* Interrupt or Acknowledge	... */
-};
-
-
 struct HvLpEvent {
-	struct HvEventFlags xFlags;	/* Event flags		      x00-x00 */
+	u8	flags;			/* Event flags		      x00-x00 */
 	u8	xType;			/* Type of message	      x01-x01 */
 	u16	xSubtype;		/* Subtype for event	      x02-x03 */
 	u8	xSourceLp;		/* Source LP		      x04-x04 */
@@ -126,6 +117,11 @@ extern int HvLpEvent_closePath(HvLpEvent_Type eventType, HvLpIndex lpIndex);
 #define HvLpEvent_AckType_ImmediateAck 0
 #define HvLpEvent_AckType_DeferredAck 1
 
+#define HV_LP_EVENT_INT			0x01
+#define HV_LP_EVENT_DO_ACK		0x02
+#define HV_LP_EVENT_DEFERRED_ACK	0x04
+#define HV_LP_EVENT_VALID		0x80
+
 #define HvLpDma_Direction_LocalToRemote 0
 #define HvLpDma_Direction_RemoteToLocal 1
 
@@ -139,4 +135,29 @@ extern int HvLpEvent_closePath(HvLpEvent_Type eventType, HvLpIndex lpIndex);
 #define HvLpDma_Rc_InvalidAddress 4
 #define HvLpDma_Rc_InvalidLength 5
 
+static inline int hvlpevent_is_valid(struct HvLpEvent *h)
+{
+	return h->flags & HV_LP_EVENT_VALID;
+}
+
+static inline void hvlpevent_invalidate(struct HvLpEvent *h)
+{
+	h->flags &= ~ HV_LP_EVENT_VALID;
+}
+
+static inline int hvlpevent_is_int(struct HvLpEvent *h)
+{
+	return h->flags & HV_LP_EVENT_INT;
+}
+
+static inline int hvlpevent_is_ack(struct HvLpEvent *h)
+{
+	return !hvlpevent_is_int(h);
+}
+
+static inline int hvlpevent_need_ack(struct HvLpEvent *h)
+{
+	return h->flags & HV_LP_EVENT_DO_ACK;
+}
+
 #endif /* _ASM_POWERPC_ISERIES_HV_LP_EVENT_H */
-- 
cgit v1.2.3


From f9cb83ac1f6c3b794c2706e06546d8fecae60ba5 Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 12 Jan 2006 13:50:18 +1100
Subject: [PATCH] powerpc: eliminate bitfields from ItLpNaca

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/platforms/iseries/lpardata.c |  5 +----
 include/asm-powerpc/iseries/it_lp_naca.h  | 21 +++++++++++----------
 2 files changed, 12 insertions(+), 14 deletions(-)

(limited to 'include')

diff --git a/arch/powerpc/platforms/iseries/lpardata.c b/arch/powerpc/platforms/iseries/lpardata.c
index ea72385aaf0a..438e2dba63b5 100644
--- a/arch/powerpc/platforms/iseries/lpardata.c
+++ b/arch/powerpc/platforms/iseries/lpardata.c
@@ -93,10 +93,7 @@ struct ItLpNaca itLpNaca = {
 	.xPirEnvironMode = 0,		/* Piranha stuff */
 	.xPirConsoleMode = 0,
 	.xPirDasdMode = 0,
-	.xLparInstalled = 0,
-	.xSysPartitioned = 0,
-	.xHwSyncedTBs = 0,
-	.xIntProcUtilHmt = 0,
+	.flags = 0,
 	.xSpVpdFormat = 0,
 	.xIntProcRatio = 0,
 	.xPlicVrmIndex = 0,		/* VRM index of PLIC */
diff --git a/include/asm-powerpc/iseries/it_lp_naca.h b/include/asm-powerpc/iseries/it_lp_naca.h
index c3ef1de45d82..cc2989950419 100644
--- a/include/asm-powerpc/iseries/it_lp_naca.h
+++ b/include/asm-powerpc/iseries/it_lp_naca.h
@@ -37,17 +37,13 @@ struct ItLpNaca {
 	u8	xLpIndex;		// LP Index			x0B-x0B
 	u16	xMaxLpQueues;		// Number of allocated queues	x0C-x0D
 	u16	xLpQueueOffset;		// Offset to start of LP queues	x0E-x0F
-	u8	xPirEnvironMode:8;	// Piranha or hardware		x10-x10
-	u8	xPirConsoleMode:8;	// Piranha console indicator	x11-x11
-	u8	xPirDasdMode:8;		// Piranha dasd indicator	x12-x12
+	u8	xPirEnvironMode;	// Piranha or hardware		x10-x10
+	u8	xPirConsoleMode;	// Piranha console indicator	x11-x11
+	u8	xPirDasdMode;		// Piranha dasd indicator	x12-x12
 	u8	xRsvd1_0[5];		// Reserved for Piranha related	x13-x17
-	u8	xLparInstalled:1;	// Is LPAR installed on system	x18-x1F
-	u8	xSysPartitioned:1;	// Is the system partitioned	...
-	u8	xHwSyncedTBs:1;		// Hardware synced TBs		...
-	u8	xIntProcUtilHmt:1;	// Utilize HMT for interrupts	...
-	u8	xRsvd1_1:4;		// Reserved			...
-	u8	xSpVpdFormat:8;		// VPD areas are in CSP format	...
-	u8	xIntProcRatio:8;	// Ratio of int procs to procs	...
+	u8	flags;			// flags, see below		x18-x1F
+	u8	xSpVpdFormat;		// VPD areas are in CSP format	...
+	u8	xIntProcRatio;		// Ratio of int procs to procs	...
 	u8	xRsvd1_2[5];		// Reserved			...
 	u16	xRsvd1_3;		// Reserved			x20-x21
 	u16	xPlicVrmIndex;		// VRM index of PLIC		x22-x23
@@ -77,4 +73,9 @@ struct ItLpNaca {
 
 extern struct ItLpNaca		itLpNaca;
 
+#define ITLPNACA_LPAR		0x80	/* Is LPAR installed on the system */
+#define ITLPNACA_PARTITIONED	0x40	/* Is the system partitioned */
+#define ITLPNACA_HWSYNCEDTBS	0x20	/* Hardware synced TBs */
+#define ITLPNACA_HMTINT		0x10	/* Utilize MHT for interrupts */
+
 #endif /* _ASM_POWERPC_ISERIES_IT_LP_NACA_H */
-- 
cgit v1.2.3


From 511061049b2fab5ea684dfddcb8d2a38591391f3 Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 12 Jan 2006 13:51:42 +1100
Subject: [PATCH] powercp: iSeries include file comment cleanups

Mainly just removing file names from the comments.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 include/asm-powerpc/iseries/hv_call.h          | 4 +---
 include/asm-powerpc/iseries/hv_call_sc.h       | 1 -
 include/asm-powerpc/iseries/hv_lp_config.h     | 1 -
 include/asm-powerpc/iseries/hv_lp_event.h      | 1 -
 include/asm-powerpc/iseries/hv_types.h         | 1 -
 include/asm-powerpc/iseries/iseries_io.h       | 2 +-
 include/asm-powerpc/iseries/it_exp_vpd_panel.h | 1 -
 include/asm-powerpc/iseries/it_lp_naca.h       | 1 -
 include/asm-powerpc/iseries/it_lp_queue.h      | 1 -
 include/asm-powerpc/iseries/it_lp_reg_save.h   | 3 +--
 include/asm-powerpc/iseries/lpar_map.h         | 1 -
 include/asm-powerpc/iseries/mf.h               | 1 -
 include/asm-powerpc/iseries/vio.h              | 1 -
 13 files changed, 3 insertions(+), 16 deletions(-)

(limited to 'include')

diff --git a/include/asm-powerpc/iseries/hv_call.h b/include/asm-powerpc/iseries/hv_call.h
index e9f831c9a5e5..162d653ad51f 100644
--- a/include/asm-powerpc/iseries/hv_call.h
+++ b/include/asm-powerpc/iseries/hv_call.h
@@ -1,5 +1,4 @@
 /*
- * HvCall.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -15,8 +14,7 @@
  * 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
- */
-/*
+ *
  * This file contains the "hypervisor call" interface which is used to
  * drive the hypervisor from the OS.
  */
diff --git a/include/asm-powerpc/iseries/hv_call_sc.h b/include/asm-powerpc/iseries/hv_call_sc.h
index dec7e9d9ab78..f5d210959250 100644
--- a/include/asm-powerpc/iseries/hv_call_sc.h
+++ b/include/asm-powerpc/iseries/hv_call_sc.h
@@ -1,5 +1,4 @@
 /*
- * HvCallSc.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/hv_lp_config.h b/include/asm-powerpc/iseries/hv_lp_config.h
index bc00f036bca0..df8b20739719 100644
--- a/include/asm-powerpc/iseries/hv_lp_config.h
+++ b/include/asm-powerpc/iseries/hv_lp_config.h
@@ -1,5 +1,4 @@
 /*
- * HvLpConfig.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/hv_lp_event.h b/include/asm-powerpc/iseries/hv_lp_event.h
index 8ee89b67b8fd..4065a4de4935 100644
--- a/include/asm-powerpc/iseries/hv_lp_event.h
+++ b/include/asm-powerpc/iseries/hv_lp_event.h
@@ -1,5 +1,4 @@
 /*
- * HvLpEvent.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/hv_types.h b/include/asm-powerpc/iseries/hv_types.h
index c38f7e3d01dc..c3e6d2a1d1c3 100644
--- a/include/asm-powerpc/iseries/hv_types.h
+++ b/include/asm-powerpc/iseries/hv_types.h
@@ -1,5 +1,4 @@
 /*
- * HvTypes.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/iseries_io.h b/include/asm-powerpc/iseries/iseries_io.h
index 56b2113ff0f5..d1c317c6c3d0 100644
--- a/include/asm-powerpc/iseries/iseries_io.h
+++ b/include/asm-powerpc/iseries/iseries_io.h
@@ -6,7 +6,7 @@
 #ifdef CONFIG_PPC_ISERIES
 #include <linux/types.h>
 /*
- * File iSeries_io.h created by Allan Trautman on Thu Dec 28 2000.
+ * Created by Allan Trautman on Thu Dec 28 2000.
  *
  * Remaps the io.h for the iSeries Io
  * Copyright (C) 2000  Allan H Trautman, IBM Corporation
diff --git a/include/asm-powerpc/iseries/it_exp_vpd_panel.h b/include/asm-powerpc/iseries/it_exp_vpd_panel.h
index 66a17a230c52..304a609ae21a 100644
--- a/include/asm-powerpc/iseries/it_exp_vpd_panel.h
+++ b/include/asm-powerpc/iseries/it_exp_vpd_panel.h
@@ -1,5 +1,4 @@
 /*
- * ItExtVpdPanel.h
  * Copyright (C) 2002  Dave Boutcher IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/it_lp_naca.h b/include/asm-powerpc/iseries/it_lp_naca.h
index cc2989950419..4fdcf052927f 100644
--- a/include/asm-powerpc/iseries/it_lp_naca.h
+++ b/include/asm-powerpc/iseries/it_lp_naca.h
@@ -1,5 +1,4 @@
 /*
- * ItLpNaca.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/it_lp_queue.h b/include/asm-powerpc/iseries/it_lp_queue.h
index a60d03afbf95..b7c6fc12cce2 100644
--- a/include/asm-powerpc/iseries/it_lp_queue.h
+++ b/include/asm-powerpc/iseries/it_lp_queue.h
@@ -1,5 +1,4 @@
 /*
- * ItLpQueue.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/it_lp_reg_save.h b/include/asm-powerpc/iseries/it_lp_reg_save.h
index 81824e1bb767..5403b756f654 100644
--- a/include/asm-powerpc/iseries/it_lp_reg_save.h
+++ b/include/asm-powerpc/iseries/it_lp_reg_save.h
@@ -1,5 +1,4 @@
 /*
- * ItLpRegSave.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
@@ -83,4 +82,4 @@ struct ItLpRegSave {
 
 extern struct ItLpRegSave iseries_reg_save[];
 
-#endif /* _ITLPREGSAVE_H */
+#endif /* _ASM_POWERPC_ISERIES_IT_LP_REG_SAVE_H */
diff --git a/include/asm-powerpc/iseries/lpar_map.h b/include/asm-powerpc/iseries/lpar_map.h
index 84fc321615bf..2ec384d66abb 100644
--- a/include/asm-powerpc/iseries/lpar_map.h
+++ b/include/asm-powerpc/iseries/lpar_map.h
@@ -1,5 +1,4 @@
 /*
- * LparMap.h
  * Copyright (C) 2001  Mike Corrigan IBM Corporation
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/include/asm-powerpc/iseries/mf.h b/include/asm-powerpc/iseries/mf.h
index e7bd57a03fb1..857e5202fc78 100644
--- a/include/asm-powerpc/iseries/mf.h
+++ b/include/asm-powerpc/iseries/mf.h
@@ -1,5 +1,4 @@
 /*
- * mf.h
  * Copyright (C) 2001  Troy D. Armstrong IBM Corporation
  * Copyright (C) 2004  Stephen Rothwell IBM Corporation
  *
diff --git a/include/asm-powerpc/iseries/vio.h b/include/asm-powerpc/iseries/vio.h
index 7e3a469420dd..72a97d37aac3 100644
--- a/include/asm-powerpc/iseries/vio.h
+++ b/include/asm-powerpc/iseries/vio.h
@@ -1,5 +1,4 @@
 /* -*- linux-c -*-
- *  drivers/char/vio.h
  *
  *  iSeries Virtual I/O Message Path header
  *
-- 
cgit v1.2.3


From ee2cdecec4dce8f7eb0d37a1bbf820cb32b2b75b Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 12 Jan 2006 13:54:20 +1100
Subject: [PATCH] powerpc: iSeries fixes for build with no PCI

This reverts part of "ppc64 iSeries: allow build with no PCI"
(145d01e4287b8cbf50f87c3283e33bf5c84e8468) which affected generic code
and applies a fix in the arch specific code.

Commit "partly merge iseries do_IRQ"
(5fee9b3b39eb55c7e3619a3b36ceeabffeb8f144) introduced iSeries_get_irq
which was only available if CONFIG_PCI is set.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/platforms/iseries/Makefile  |  4 ++--
 arch/powerpc/platforms/iseries/irq.c     |  6 ++++++
 drivers/char/mem.c                       |  8 ++++----
 include/asm-powerpc/iseries/iseries_io.h | 12 ++++++++++++
 4 files changed, 24 insertions(+), 6 deletions(-)

(limited to 'include')

diff --git a/arch/powerpc/platforms/iseries/Makefile b/arch/powerpc/platforms/iseries/Makefile
index 127b465308be..ce8c0b943fa0 100644
--- a/arch/powerpc/platforms/iseries/Makefile
+++ b/arch/powerpc/platforms/iseries/Makefile
@@ -1,8 +1,8 @@
 EXTRA_CFLAGS	+= -mno-minimal-toc
 
 obj-y += hvlog.o hvlpconfig.o lpardata.o setup.o mf.o lpevents.o \
-	hvcall.o proc.o htab.o iommu.o misc.o
-obj-$(CONFIG_PCI) += pci.o irq.o vpdinfo.o
+	hvcall.o proc.o htab.o iommu.o misc.o irq.o
+obj-$(CONFIG_PCI) += pci.o vpdinfo.o
 obj-$(CONFIG_IBMVIO) += vio.o
 obj-$(CONFIG_SMP) += smp.o
 obj-$(CONFIG_VIOPATH) += viopath.o
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index 3d023856405a..83442ea77476 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -48,6 +48,8 @@
 extern void iSeries_smp_message_recv(struct pt_regs *);
 #endif
 
+#ifdef CONFIG_PCI
+
 enum pci_event_type {
 	pe_bus_created		= 0,	/* PHB has been created */
 	pe_bus_error		= 1,	/* PHB has failed */
@@ -325,6 +327,8 @@ int __init iSeries_allocate_IRQ(HvBusNumber bus,
 	return virtirq;
 }
 
+#endif /* CONFIG_PCI */
+
 /*
  * Get the next pending IRQ.
  */
@@ -344,6 +348,7 @@ int iSeries_get_irq(struct pt_regs *regs)
 	if (hvlpevent_is_pending())
 		process_hvlpevents(regs);
 
+#ifdef CONFIG_PCI
 	if (num_pending_irqs) {
 		spin_lock(&pending_irqs_lock);
 		for (irq = 0; irq < NR_IRQS; irq++) {
@@ -357,6 +362,7 @@ int iSeries_get_irq(struct pt_regs *regs)
 		if (irq >= NR_IRQS)
 			irq = -2;
 	}
+#endif
 
 	return irq;
 }
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 704c3c07f0ab..29c41f4418c0 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -534,7 +534,7 @@ static ssize_t write_kmem(struct file * file, const char __user * buf,
  	return virtr + wrote;
 }
 
-#if (defined(CONFIG_ISA) || !defined(__mc68000__)) && (!defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI))
+#if defined(CONFIG_ISA) || !defined(__mc68000__)
 static ssize_t read_port(struct file * file, char __user * buf,
 			 size_t count, loff_t *ppos)
 {
@@ -795,7 +795,7 @@ static struct file_operations null_fops = {
 	.write		= write_null,
 };
 
-#if (defined(CONFIG_ISA) || !defined(__mc68000__)) && (!defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI))
+#if defined(CONFIG_ISA) || !defined(__mc68000__)
 static struct file_operations port_fops = {
 	.llseek		= memory_lseek,
 	.read		= read_port,
@@ -865,7 +865,7 @@ static int memory_open(struct inode * inode, struct file * filp)
 		case 3:
 			filp->f_op = &null_fops;
 			break;
-#if (defined(CONFIG_ISA) || !defined(__mc68000__)) && (!defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI))
+#if defined(CONFIG_ISA) || !defined(__mc68000__)
 		case 4:
 			filp->f_op = &port_fops;
 			break;
@@ -912,7 +912,7 @@ static const struct {
 	{1, "mem",     S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops},
 	{2, "kmem",    S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops},
 	{3, "null",    S_IRUGO | S_IWUGO,           &null_fops},
-#if (defined(CONFIG_ISA) || !defined(__mc68000__)) && (!defined(CONFIG_PPC_ISERIES) || defined(CONFIG_PCI))
+#if defined(CONFIG_ISA) || !defined(__mc68000__)
 	{4, "port",    S_IRUSR | S_IWUSR | S_IRGRP, &port_fops},
 #endif
 	{5, "zero",    S_IRUGO | S_IWUGO,           &zero_fops},
diff --git a/include/asm-powerpc/iseries/iseries_io.h b/include/asm-powerpc/iseries/iseries_io.h
index d1c317c6c3d0..496aa852b617 100644
--- a/include/asm-powerpc/iseries/iseries_io.h
+++ b/include/asm-powerpc/iseries/iseries_io.h
@@ -32,6 +32,7 @@
  * End Change Activity
  */
 
+#ifdef CONFIG_PCI
 extern u8   iSeries_Read_Byte(const volatile void __iomem * IoAddress);
 extern u16  iSeries_Read_Word(const volatile void __iomem * IoAddress);
 extern u32  iSeries_Read_Long(const volatile void __iomem * IoAddress);
@@ -44,6 +45,17 @@ extern void iSeries_memcpy_toio(volatile void __iomem *dest, void *source,
 		size_t n);
 extern void iSeries_memcpy_fromio(void *dest,
 		const volatile void __iomem *source, size_t n);
+#else
+static inline u8 iSeries_Read_Byte(const volatile void __iomem *IoAddress)
+{
+	return 0xff;
+}
+
+static inline void iSeries_Write_Byte(u8 IoData,
+		volatile void __iomem *IoAddress)
+{
+}
+#endif	/* CONFIG_PCI */
 
 #endif /* CONFIG_PPC_ISERIES */
 #endif /* _ASM_POWERPC_ISERIES_ISERIES_IO_H */
-- 
cgit v1.2.3


From 9bd7ea60b1a0cf9fc745fd2eadb261e4c7719acd Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 12 Jan 2006 13:58:19 +1100
Subject: [PATCH] powerpc: clean up iommu.h a bit

There was a function declared for CONFIG_PSERIES which no longer exists
and the two function declarations for CONFIG_ISERIES have been moved
into an include file in platforms/iseries since they are defined and
used only there.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/platforms/iseries/iommu.c |  2 ++
 arch/powerpc/platforms/iseries/iommu.h | 35 ++++++++++++++++++++++++++++++++++
 arch/powerpc/platforms/iseries/pci.c   |  1 +
 arch/powerpc/platforms/iseries/vio.c   |  2 ++
 include/asm-powerpc/iommu.h            | 19 ------------------
 5 files changed, 40 insertions(+), 19 deletions(-)
 create mode 100644 arch/powerpc/platforms/iseries/iommu.h

(limited to 'include')

diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index 2b54eeb2c899..bea0b703f409 100644
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -34,6 +34,8 @@
 #include <asm/pci-bridge.h>
 #include <asm/iseries/hv_call_xm.h>
 
+#include "iommu.h"
+
 extern struct list_head iSeries_Global_Device_List;
 
 
diff --git a/arch/powerpc/platforms/iseries/iommu.h b/arch/powerpc/platforms/iseries/iommu.h
new file mode 100644
index 000000000000..cb5658fbe657
--- /dev/null
+++ b/arch/powerpc/platforms/iseries/iommu.h
@@ -0,0 +1,35 @@
+#ifndef _PLATFORMS_ISERIES_IOMMU_H
+#define _PLATFORMS_ISERIES_IOMMU_H
+
+/*
+ * Copyright (C) 2005  Stephen Rothwell, 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
+ */
+
+struct device_node;
+struct iommu_table;
+
+/* Creates table for an individual device node */
+extern void iommu_devnode_init_iSeries(struct device_node *dn);
+
+/* Get table parameters from HV */
+extern void iommu_table_getparms_iSeries(unsigned long busno,
+		unsigned char slotno, unsigned char virtbus,
+		struct iommu_table *tbl);
+
+#endif /* _PLATFORMS_ISERIES_IOMMU_H */
diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c
index dafc518fbb83..a19833b880e4 100644
--- a/arch/powerpc/platforms/iseries/pci.c
+++ b/arch/powerpc/platforms/iseries/pci.c
@@ -43,6 +43,7 @@
 #include "irq.h"
 #include "pci.h"
 #include "call_pci.h"
+#include "iommu.h"
 
 extern unsigned long io_page_mask;
 
diff --git a/arch/powerpc/platforms/iseries/vio.c b/arch/powerpc/platforms/iseries/vio.c
index 384360ee06ec..ad36ab0639f0 100644
--- a/arch/powerpc/platforms/iseries/vio.c
+++ b/arch/powerpc/platforms/iseries/vio.c
@@ -22,6 +22,8 @@
 #include <asm/iseries/hv_lp_config.h>
 #include <asm/iseries/hv_call_xm.h>
 
+#include "iommu.h"
+
 struct device *iSeries_vio_dev = &vio_bus_device.dev;
 EXPORT_SYMBOL(iSeries_vio_dev);
 
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index 8a8393e50774..d5677cbec200 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -64,25 +64,6 @@ extern void iommu_free_table(struct device_node *dn);
 
 #endif /* CONFIG_PPC_MULTIPLATFORM */
 
-#ifdef CONFIG_PPC_PSERIES
-
-/* Creates table for an individual device node */
-extern void iommu_devnode_init_pSeries(struct device_node *dn);
-
-#endif /* CONFIG_PPC_PSERIES */
-
-#ifdef CONFIG_PPC_ISERIES
-
-/* Creates table for an individual device node */
-extern void iommu_devnode_init_iSeries(struct device_node *dn);
-/* Get table parameters from HV */
-extern void iommu_table_getparms_iSeries(unsigned long busno,
-					 unsigned char slotno,
-					 unsigned char virtbus,
-					 struct iommu_table* tbl);
-
-#endif /* CONFIG_PPC_ISERIES */
-
 /* Initializes an iommu_table based in values set in the passed-in
  * structure
  */
-- 
cgit v1.2.3


From 9623b5d3d3d85bac47a83e0e2cf2a9998ade9bd3 Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 12 Jan 2006 14:18:28 +1100
Subject: [PATCH] powerpc: small pci cleanups

pcibios_claim_one_bus is not needed on iSeries and phbs_remap_io can be
mode static.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/kernel/pci_64.c     | 5 +++--
 include/asm-powerpc/pci-bridge.h | 2 --
 2 files changed, 3 insertions(+), 4 deletions(-)

(limited to 'include')

diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 24fe70f40b66..c367520bc1c3 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -53,6 +53,7 @@ EXPORT_SYMBOL(io_page_mask);
 #ifdef CONFIG_PPC_MULTIPLATFORM
 static void fixup_resource(struct resource *res, struct pci_dev *dev);
 static void do_bus_setup(struct pci_bus *bus);
+static void phbs_remap_io(void);
 #endif
 
 /* pci_io_base -- the base address from which io bars are offsets.
@@ -251,6 +252,7 @@ void pcibios_free_controller(struct pci_controller *phb)
 		kfree(phb);
 }
 
+#ifndef CONFIG_PPC_ISERIES
 void __devinit pcibios_claim_one_bus(struct pci_bus *b)
 {
 	struct pci_dev *dev;
@@ -275,7 +277,6 @@ void __devinit pcibios_claim_one_bus(struct pci_bus *b)
 EXPORT_SYMBOL_GPL(pcibios_claim_one_bus);
 #endif
 
-#ifndef CONFIG_PPC_ISERIES
 static void __init pcibios_claim_of_setup(void)
 {
 	struct pci_bus *b;
@@ -1218,7 +1219,7 @@ int remap_bus_range(struct pci_bus *bus)
 }
 EXPORT_SYMBOL(remap_bus_range);
 
-void phbs_remap_io(void)
+static void phbs_remap_io(void)
 {
 	struct pci_controller *hose, *tmp;
 
diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h
index b0d816fe2e27..38de92d41a14 100644
--- a/include/asm-powerpc/pci-bridge.h
+++ b/include/asm-powerpc/pci-bridge.h
@@ -142,8 +142,6 @@ void pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus);
 
 extern int pcibios_remove_root_bus(struct pci_controller *phb);
 
-extern void phbs_remap_io(void);
-
 static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
 {
 	struct device_node *busdn = bus->sysdata;
-- 
cgit v1.2.3


From 624cee31bcb14bfd85559fbec5dd7bb833542965 Mon Sep 17 00:00:00 2001
From: Paul Mackerras <paulus@samba.org>
Date: Thu, 12 Jan 2006 21:22:34 +1100
Subject: powerpc: make ARCH=ppc use arch/powerpc/kernel/process.c

Commit 5388fb1025443ec223ba556b10efc4c5f83f8682 made signal_32.c
use discard_lazy_cpu_state, which broke ARCH=ppc because that
uses the common signal_32.c but has its own process.c.  Make ARCH=ppc
use the common process.c to fix this and to reduce the amount
of duplicated code.

Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/kernel/Makefile  |   6 +-
 arch/powerpc/kernel/process.c |   2 +
 arch/ppc/kernel/Makefile      |   1 -
 arch/ppc/kernel/process.c     | 851 ------------------------------------------
 include/asm-ppc/system.h      |  12 +-
 5 files changed, 15 insertions(+), 857 deletions(-)
 delete mode 100644 arch/ppc/kernel/process.c

(limited to 'include')

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index bbfa1bdceb4d..a94699d8dc52 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -11,7 +11,8 @@ CFLAGS_btext.o		+= -fPIC
 endif
 
 obj-y				:= semaphore.o cputable.o ptrace.o syscalls.o \
-				   irq.o align.o signal_32.o pmc.o vdso.o
+				   irq.o align.o signal_32.o pmc.o vdso.o \
+				   init_task.o process.o
 obj-y				+= vdso32/
 obj-$(CONFIG_PPC64)		+= setup_64.o binfmt_elf32.o sys_ppc32.o \
 				   signal_64.o ptrace32.o systbl.o \
@@ -44,8 +45,7 @@ extra-$(CONFIG_FSL_BOOKE)	:= head_fsl_booke.o
 extra-$(CONFIG_8xx)		:= head_8xx.o
 extra-y				+= vmlinux.lds
 
-obj-y				+= process.o init_task.o time.o \
-				   prom.o traps.o setup-common.o udbg.o
+obj-y				+= time.o prom.o traps.o setup-common.o udbg.o
 obj-$(CONFIG_PPC32)		+= entry_32.o setup_32.o misc_32.o systbl.o
 obj-$(CONFIG_PPC64)		+= misc_64.o dma_64.o iommu.o
 obj-$(CONFIG_PPC_MULTIPLATFORM)	+= prom_init.o
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 913f90692a36..9101358cc6b3 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -223,6 +223,7 @@ void discard_lazy_cpu_state(void)
 }
 #endif /* CONFIG_SMP */
 
+#ifdef CONFIG_PPC_MERGE		/* XXX for now */
 int set_dabr(unsigned long dabr)
 {
 	if (ppc_md.set_dabr)
@@ -231,6 +232,7 @@ int set_dabr(unsigned long dabr)
 	mtspr(SPRN_DABR, dabr);
 	return 0;
 }
+#endif
 
 #ifdef CONFIG_PPC64
 DEFINE_PER_CPU(struct cpu_usage, cpu_usage_array);
diff --git a/arch/ppc/kernel/Makefile b/arch/ppc/kernel/Makefile
index e6c1d615bb86..ca0201300868 100644
--- a/arch/ppc/kernel/Makefile
+++ b/arch/ppc/kernel/Makefile
@@ -13,7 +13,6 @@ extra-$(CONFIG_POWER4)		+= idle_power4.o
 extra-y				+= vmlinux.lds
 
 obj-y				:= entry.o traps.o idle.o time.o misc.o \
-					process.o \
 					setup.o \
 					ppc_htab.o
 obj-$(CONFIG_6xx)		+= l2cr.o cpu_setup_6xx.o
diff --git a/arch/ppc/kernel/process.c b/arch/ppc/kernel/process.c
deleted file mode 100644
index 25cbdc8d2941..000000000000
--- a/arch/ppc/kernel/process.c
+++ /dev/null
@@ -1,851 +0,0 @@
-/*
- *  arch/ppc/kernel/process.c
- *
- *  Derived from "arch/i386/kernel/process.c"
- *    Copyright (C) 1995  Linus Torvalds
- *
- *  Updated and modified by Cort Dougan (cort@cs.nmt.edu) and
- *  Paul Mackerras (paulus@cs.anu.edu.au)
- *
- *  PowerPC version
- *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- *  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.
- *
- */
-
-#include <linux/config.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/elf.h>
-#include <linux/init.h>
-#include <linux/prctl.h>
-#include <linux/init_task.h>
-#include <linux/module.h>
-#include <linux/kallsyms.h>
-#include <linux/mqueue.h>
-#include <linux/hardirq.h>
-
-#include <asm/pgtable.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/mmu.h>
-#include <asm/prom.h>
-
-extern unsigned long _get_SP(void);
-
-struct task_struct *last_task_used_math = NULL;
-struct task_struct *last_task_used_altivec = NULL;
-struct task_struct *last_task_used_spe = NULL;
-
-static struct fs_struct init_fs = INIT_FS;
-static struct files_struct init_files = INIT_FILES;
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-struct mm_struct init_mm = INIT_MM(init_mm);
-EXPORT_SYMBOL(init_mm);
-
-/* this is 8kB-aligned so we can get to the thread_info struct
-   at the base of it from the stack pointer with 1 integer instruction. */
-union thread_union init_thread_union
-	__attribute__((__section__(".data.init_task"))) =
-{ INIT_THREAD_INFO(init_task) };
-
-/* initial task structure */
-struct task_struct init_task = INIT_TASK(init_task);
-EXPORT_SYMBOL(init_task);
-
-/* only used to get secondary processor up */
-struct task_struct *current_set[NR_CPUS] = {&init_task, };
-
-#undef SHOW_TASK_SWITCHES
-#undef CHECK_STACK
-
-#if defined(CHECK_STACK)
-unsigned long
-kernel_stack_top(struct task_struct *tsk)
-{
-	return ((unsigned long)tsk) + sizeof(union task_union);
-}
-
-unsigned long
-task_top(struct task_struct *tsk)
-{
-	return ((unsigned long)tsk) + sizeof(struct thread_info);
-}
-
-/* check to make sure the kernel stack is healthy */
-int check_stack(struct task_struct *tsk)
-{
-	unsigned long stack_top = kernel_stack_top(tsk);
-	unsigned long tsk_top = task_top(tsk);
-	int ret = 0;
-
-#if 0
-	/* check thread magic */
-	if ( tsk->thread.magic != THREAD_MAGIC )
-	{
-		ret |= 1;
-		printk("thread.magic bad: %08x\n", tsk->thread.magic);
-	}
-#endif
-
-	if ( !tsk )
-		printk("check_stack(): tsk bad tsk %p\n",tsk);
-
-	/* check if stored ksp is bad */
-	if ( (tsk->thread.ksp > stack_top) || (tsk->thread.ksp < tsk_top) )
-	{
-		printk("stack out of bounds: %s/%d\n"
-		       " tsk_top %08lx ksp %08lx stack_top %08lx\n",
-		       tsk->comm,tsk->pid,
-		       tsk_top, tsk->thread.ksp, stack_top);
-		ret |= 2;
-	}
-
-	/* check if stack ptr RIGHT NOW is bad */
-	if ( (tsk == current) && ((_get_SP() > stack_top ) || (_get_SP() < tsk_top)) )
-	{
-		printk("current stack ptr out of bounds: %s/%d\n"
-		       " tsk_top %08lx sp %08lx stack_top %08lx\n",
-		       current->comm,current->pid,
-		       tsk_top, _get_SP(), stack_top);
-		ret |= 4;
-	}
-
-#if 0
-	/* check amount of free stack */
-	for ( i = (unsigned long *)task_top(tsk) ; i < kernel_stack_top(tsk) ; i++ )
-	{
-		if ( !i )
-			printk("check_stack(): i = %p\n", i);
-		if ( *i != 0 )
-		{
-			/* only notify if it's less than 900 bytes */
-			if ( (i - (unsigned long *)task_top(tsk))  < 900 )
-				printk("%d bytes free on stack\n",
-				       i - task_top(tsk));
-			break;
-		}
-	}
-#endif
-
-	if (ret)
-	{
-		panic("bad kernel stack");
-	}
-	return(ret);
-}
-#endif /* defined(CHECK_STACK) */
-
-/*
- * Make sure the floating-point register state in the
- * the thread_struct is up to date for task tsk.
- */
-void flush_fp_to_thread(struct task_struct *tsk)
-{
-	if (tsk->thread.regs) {
-		/*
-		 * We need to disable preemption here because if we didn't,
-		 * another process could get scheduled after the regs->msr
-		 * test but before we have finished saving the FP registers
-		 * to the thread_struct.  That process could take over the
-		 * FPU, and then when we get scheduled again we would store
-		 * bogus values for the remaining FP registers.
-		 */
-		preempt_disable();
-		if (tsk->thread.regs->msr & MSR_FP) {
-#ifdef CONFIG_SMP
-			/*
-			 * This should only ever be called for current or
-			 * for a stopped child process.  Since we save away
-			 * the FP register state on context switch on SMP,
-			 * there is something wrong if a stopped child appears
-			 * to still have its FP state in the CPU registers.
-			 */
-			BUG_ON(tsk != current);
-#endif
-			giveup_fpu(current);
-		}
-		preempt_enable();
-	}
-}
-
-void enable_kernel_fp(void)
-{
-	WARN_ON(preemptible());
-
-#ifdef CONFIG_SMP
-	if (current->thread.regs && (current->thread.regs->msr & MSR_FP))
-		giveup_fpu(current);
-	else
-		giveup_fpu(NULL);	/* just enables FP for kernel */
-#else
-	giveup_fpu(last_task_used_math);
-#endif /* CONFIG_SMP */
-}
-EXPORT_SYMBOL(enable_kernel_fp);
-
-int dump_task_fpu(struct task_struct *tsk, elf_fpregset_t *fpregs)
-{
-	preempt_disable();
-	if (tsk->thread.regs && (tsk->thread.regs->msr & MSR_FP))
-		giveup_fpu(tsk);
-	preempt_enable();
-	memcpy(fpregs, &tsk->thread.fpr[0], sizeof(*fpregs));
-	return 1;
-}
-
-#ifdef CONFIG_ALTIVEC
-void enable_kernel_altivec(void)
-{
-	WARN_ON(preemptible());
-
-#ifdef CONFIG_SMP
-	if (current->thread.regs && (current->thread.regs->msr & MSR_VEC))
-		giveup_altivec(current);
-	else
-		giveup_altivec(NULL);	/* just enable AltiVec for kernel - force */
-#else
-	giveup_altivec(last_task_used_altivec);
-#endif /* __SMP __ */
-}
-EXPORT_SYMBOL(enable_kernel_altivec);
-
-/*
- * Make sure the VMX/Altivec register state in the
- * the thread_struct is up to date for task tsk.
- */
-void flush_altivec_to_thread(struct task_struct *tsk)
-{
-	if (tsk->thread.regs) {
-		preempt_disable();
-		if (tsk->thread.regs->msr & MSR_VEC) {
-#ifdef CONFIG_SMP
-			BUG_ON(tsk != current);
-#endif
-			giveup_altivec(current);
-		}
-		preempt_enable();
-	}
-}
-
-int dump_altivec(struct pt_regs *regs, elf_vrregset_t *vrregs)
-{
-	if (regs->msr & MSR_VEC)
-		giveup_altivec(current);
-	memcpy(vrregs, &current->thread.vr[0], sizeof(*vrregs));
-	return 1;
-}
-#endif /* CONFIG_ALTIVEC */
-
-#ifdef CONFIG_SPE
-void
-enable_kernel_spe(void)
-{
-	WARN_ON(preemptible());
-
-#ifdef CONFIG_SMP
-	if (current->thread.regs && (current->thread.regs->msr & MSR_SPE))
-		giveup_spe(current);
-	else
-		giveup_spe(NULL);	/* just enable SPE for kernel - force */
-#else
-	giveup_spe(last_task_used_spe);
-#endif /* __SMP __ */
-}
-EXPORT_SYMBOL(enable_kernel_spe);
-
-void flush_spe_to_thread(struct task_struct *tsk)
-{
-	if (tsk->thread.regs) {
-		preempt_disable();
-		if (tsk->thread.regs->msr & MSR_SPE) {
-#ifdef CONFIG_SMP
-			BUG_ON(tsk != current);
-#endif
-			giveup_spe(current);
-		}
-		preempt_enable();
-	}
-}
-
-int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs)
-{
-	if (regs->msr & MSR_SPE)
-		giveup_spe(current);
-	/* We copy u32 evr[32] + u64 acc + u32 spefscr -> 35 */
-	memcpy(evrregs, &current->thread.evr[0], sizeof(u32) * 35);
-	return 1;
-}
-#endif /* CONFIG_SPE */
-
-struct task_struct *__switch_to(struct task_struct *prev,
-	struct task_struct *new)
-{
-	struct thread_struct *new_thread, *old_thread;
-	unsigned long s;
-	struct task_struct *last;
-
-	local_irq_save(s);
-#ifdef CHECK_STACK
-	check_stack(prev);
-	check_stack(new);
-#endif
-
-#ifdef CONFIG_SMP
-	/* avoid complexity of lazy save/restore of fpu
-	 * by just saving it every time we switch out if
-	 * this task used the fpu during the last quantum.
-	 *
-	 * If it tries to use the fpu again, it'll trap and
-	 * reload its fp regs.  So we don't have to do a restore
-	 * every switch, just a save.
-	 *  -- Cort
-	 */
-	if (prev->thread.regs && (prev->thread.regs->msr & MSR_FP))
-		giveup_fpu(prev);
-#ifdef CONFIG_ALTIVEC
-	/*
-	 * If the previous thread used altivec in the last quantum
-	 * (thus changing altivec regs) then save them.
-	 * We used to check the VRSAVE register but not all apps
-	 * set it, so we don't rely on it now (and in fact we need
-	 * to save & restore VSCR even if VRSAVE == 0).  -- paulus
-	 *
-	 * On SMP we always save/restore altivec regs just to avoid the
-	 * complexity of changing processors.
-	 *  -- Cort
-	 */
-	if ((prev->thread.regs && (prev->thread.regs->msr & MSR_VEC)))
-		giveup_altivec(prev);
-#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_SPE
-	/*
-	 * If the previous thread used spe in the last quantum
-	 * (thus changing spe regs) then save them.
-	 *
-	 * On SMP we always save/restore spe regs just to avoid the
-	 * complexity of changing processors.
-	 */
-	if ((prev->thread.regs && (prev->thread.regs->msr & MSR_SPE)))
-		giveup_spe(prev);
-#endif /* CONFIG_SPE */
-#endif /* CONFIG_SMP */
-
-#ifdef CONFIG_ALTIVEC
-	/* Avoid the trap.  On smp this this never happens since
-	 * we don't set last_task_used_altivec -- Cort
-	 */
-	if (new->thread.regs && last_task_used_altivec == new)
-		new->thread.regs->msr |= MSR_VEC;
-#endif
-#ifdef CONFIG_SPE
-	/* Avoid the trap.  On smp this this never happens since
-	 * we don't set last_task_used_spe
-	 */
-	if (new->thread.regs && last_task_used_spe == new)
-		new->thread.regs->msr |= MSR_SPE;
-#endif /* CONFIG_SPE */
-	new_thread = &new->thread;
-	old_thread = &current->thread;
-	last = _switch(old_thread, new_thread);
-	local_irq_restore(s);
-	return last;
-}
-
-void show_regs(struct pt_regs * regs)
-{
-	int i, trap;
-
-	printk("NIP: %08lX LR: %08lX SP: %08lX REGS: %p TRAP: %04lx    %s\n",
-	       regs->nip, regs->link, regs->gpr[1], regs, regs->trap,
-	       print_tainted());
-	printk("MSR: %08lx EE: %01x PR: %01x FP: %01x ME: %01x IR/DR: %01x%01x\n",
-	       regs->msr, regs->msr&MSR_EE ? 1 : 0, regs->msr&MSR_PR ? 1 : 0,
-	       regs->msr & MSR_FP ? 1 : 0,regs->msr&MSR_ME ? 1 : 0,
-	       regs->msr&MSR_IR ? 1 : 0,
-	       regs->msr&MSR_DR ? 1 : 0);
-	trap = TRAP(regs);
-	if (trap == 0x300 || trap == 0x600)
-		printk("DAR: %08lX, DSISR: %08lX\n", regs->dar, regs->dsisr);
-	printk("TASK = %p[%d] '%s' THREAD: %p\n",
-	       current, current->pid, current->comm, current->thread_info);
-	printk("Last syscall: %ld ", current->thread.last_syscall);
-
-#ifdef CONFIG_SMP
-	printk(" CPU: %d", smp_processor_id());
-#endif /* CONFIG_SMP */
-
-	for (i = 0;  i < 32;  i++) {
-		long r;
-		if ((i % 8) == 0)
-			printk("\n" KERN_INFO "GPR%02d: ", i);
-		if (__get_user(r, &regs->gpr[i]))
-			break;
-		printk("%08lX ", r);
-		if (i == 12 && !FULL_REGS(regs))
-			break;
-	}
-	printk("\n");
-#ifdef CONFIG_KALLSYMS
-	/*
-	 * Lookup NIP late so we have the best change of getting the
-	 * above info out without failing
-	 */
-	printk("NIP [%08lx] ", regs->nip);
-	print_symbol("%s\n", regs->nip);
-	printk("LR [%08lx] ", regs->link);
-	print_symbol("%s\n", regs->link);
-#endif
-	show_stack(current, (unsigned long *) regs->gpr[1]);
-}
-
-void exit_thread(void)
-{
-	preempt_disable();
-	if (last_task_used_math == current)
-		last_task_used_math = NULL;
-	if (last_task_used_altivec == current)
-		last_task_used_altivec = NULL;
-#ifdef CONFIG_SPE
-	if (last_task_used_spe == current)
-		last_task_used_spe = NULL;
-#endif
-	preempt_enable();
-}
-
-void flush_thread(void)
-{
-	preempt_disable();
-	if (last_task_used_math == current)
-		last_task_used_math = NULL;
-	if (last_task_used_altivec == current)
-		last_task_used_altivec = NULL;
-#ifdef CONFIG_SPE
-	if (last_task_used_spe == current)
-		last_task_used_spe = NULL;
-#endif
-	preempt_enable();
-}
-
-void
-release_thread(struct task_struct *t)
-{
-}
-
-/*
- * This gets called before we allocate a new thread and copy
- * the current task into it.
- */
-void prepare_to_copy(struct task_struct *tsk)
-{
-	struct pt_regs *regs = tsk->thread.regs;
-
-	if (regs == NULL)
-		return;
-	preempt_disable();
-	if (regs->msr & MSR_FP)
-		giveup_fpu(current);
-#ifdef CONFIG_ALTIVEC
-	if (regs->msr & MSR_VEC)
-		giveup_altivec(current);
-#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_SPE
-	if (regs->msr & MSR_SPE)
-		giveup_spe(current);
-#endif /* CONFIG_SPE */
-	preempt_enable();
-}
-
-/*
- * Copy a thread..
- */
-int
-copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
-	    unsigned long unused,
-	    struct task_struct *p, struct pt_regs *regs)
-{
-	struct pt_regs *childregs, *kregs;
-	extern void ret_from_fork(void);
-	unsigned long sp = (unsigned long)p->thread_info + THREAD_SIZE;
-	unsigned long childframe;
-
-	CHECK_FULL_REGS(regs);
-	/* Copy registers */
-	sp -= sizeof(struct pt_regs);
-	childregs = (struct pt_regs *) sp;
-	*childregs = *regs;
-	if ((childregs->msr & MSR_PR) == 0) {
-		/* for kernel thread, set `current' and stackptr in new task */
-		childregs->gpr[1] = sp + sizeof(struct pt_regs);
-		childregs->gpr[2] = (unsigned long) p;
-		p->thread.regs = NULL;	/* no user register state */
-	} else {
-		childregs->gpr[1] = usp;
-		p->thread.regs = childregs;
-		if (clone_flags & CLONE_SETTLS)
-			childregs->gpr[2] = childregs->gpr[6];
-	}
-	childregs->gpr[3] = 0;  /* Result from fork() */
-	sp -= STACK_FRAME_OVERHEAD;
-	childframe = sp;
-
-	/*
-	 * The way this works is that at some point in the future
-	 * some task will call _switch to switch to the new task.
-	 * That will pop off the stack frame created below and start
-	 * the new task running at ret_from_fork.  The new task will
-	 * do some house keeping and then return from the fork or clone
-	 * system call, using the stack frame created above.
-	 */
-	sp -= sizeof(struct pt_regs);
-	kregs = (struct pt_regs *) sp;
-	sp -= STACK_FRAME_OVERHEAD;
-	p->thread.ksp = sp;
-	kregs->nip = (unsigned long)ret_from_fork;
-
-	p->thread.last_syscall = -1;
-
-	return 0;
-}
-
-/*
- * Set up a thread for executing a new program
- */
-void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp)
-{
-	set_fs(USER_DS);
-	memset(regs->gpr, 0, sizeof(regs->gpr));
-	regs->ctr = 0;
-	regs->link = 0;
-	regs->xer = 0;
-	regs->ccr = 0;
-	regs->mq = 0;
-	regs->nip = nip;
-	regs->gpr[1] = sp;
-	regs->msr = MSR_USER;
-	preempt_disable();
-	if (last_task_used_math == current)
-		last_task_used_math = NULL;
-	if (last_task_used_altivec == current)
-		last_task_used_altivec = NULL;
-#ifdef CONFIG_SPE
-	if (last_task_used_spe == current)
-		last_task_used_spe = NULL;
-#endif
-	preempt_enable();
-	memset(current->thread.fpr, 0, sizeof(current->thread.fpr));
-	current->thread.fpscr.val = 0;
-#ifdef CONFIG_ALTIVEC
-	memset(current->thread.vr, 0, sizeof(current->thread.vr));
-	memset(&current->thread.vscr, 0, sizeof(current->thread.vscr));
-	current->thread.vrsave = 0;
-	current->thread.used_vr = 0;
-#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_SPE
-	memset(current->thread.evr, 0, sizeof(current->thread.evr));
-	current->thread.acc = 0;
-	current->thread.spefscr = 0;
-	current->thread.used_spe = 0;
-#endif /* CONFIG_SPE */
-}
-
-#define PR_FP_ALL_EXCEPT (PR_FP_EXC_DIV | PR_FP_EXC_OVF | PR_FP_EXC_UND \
-		| PR_FP_EXC_RES | PR_FP_EXC_INV)
-
-int set_fpexc_mode(struct task_struct *tsk, unsigned int val)
-{
-	struct pt_regs *regs = tsk->thread.regs;
-
-	/* This is a bit hairy.  If we are an SPE enabled  processor
-	 * (have embedded fp) we store the IEEE exception enable flags in
-	 * fpexc_mode.  fpexc_mode is also used for setting FP exception
-	 * mode (asyn, precise, disabled) for 'Classic' FP. */
-	if (val & PR_FP_EXC_SW_ENABLE) {
-#ifdef CONFIG_SPE
-		tsk->thread.fpexc_mode = val &
-			(PR_FP_EXC_SW_ENABLE | PR_FP_ALL_EXCEPT);
-#else
-		return -EINVAL;
-#endif
-	} else {
-		/* on a CONFIG_SPE this does not hurt us.  The bits that
-		 * __pack_fe01 use do not overlap with bits used for
-		 * PR_FP_EXC_SW_ENABLE.  Additionally, the MSR[FE0,FE1] bits
-		 * on CONFIG_SPE implementations are reserved so writing to
-		 * them does not change anything */
-		if (val > PR_FP_EXC_PRECISE)
-			return -EINVAL;
-		tsk->thread.fpexc_mode = __pack_fe01(val);
-		if (regs != NULL && (regs->msr & MSR_FP) != 0)
-			regs->msr = (regs->msr & ~(MSR_FE0|MSR_FE1))
-				| tsk->thread.fpexc_mode;
-	}
-	return 0;
-}
-
-int get_fpexc_mode(struct task_struct *tsk, unsigned long adr)
-{
-	unsigned int val;
-
-	if (tsk->thread.fpexc_mode & PR_FP_EXC_SW_ENABLE)
-#ifdef CONFIG_SPE
-		val = tsk->thread.fpexc_mode;
-#else
-		return -EINVAL;
-#endif
-	else
-		val = __unpack_fe01(tsk->thread.fpexc_mode);
-	return put_user(val, (unsigned int __user *) adr);
-}
-
-int sys_clone(unsigned long clone_flags, unsigned long usp,
-	      int __user *parent_tidp, void __user *child_threadptr,
-	      int __user *child_tidp, int p6,
-	      struct pt_regs *regs)
-{
-	CHECK_FULL_REGS(regs);
-	if (usp == 0)
-		usp = regs->gpr[1];	/* stack pointer for child */
- 	return do_fork(clone_flags, usp, regs, 0, parent_tidp, child_tidp);
-}
-
-int sys_fork(unsigned long p1, unsigned long p2, unsigned long p3,
-	     unsigned long p4, unsigned long p5, unsigned long p6,
-	     struct pt_regs *regs)
-{
-	CHECK_FULL_REGS(regs);
-	return do_fork(SIGCHLD, regs->gpr[1], regs, 0, NULL, NULL);
-}
-
-int sys_vfork(unsigned long p1, unsigned long p2, unsigned long p3,
-	      unsigned long p4, unsigned long p5, unsigned long p6,
-	      struct pt_regs *regs)
-{
-	CHECK_FULL_REGS(regs);
-	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->gpr[1],
-			regs, 0, NULL, NULL);
-}
-
-int sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
-	       unsigned long a3, unsigned long a4, unsigned long a5,
-	       struct pt_regs *regs)
-{
-	int error;
-	char * filename;
-
-	filename = getname((char __user *) a0);
-	error = PTR_ERR(filename);
-	if (IS_ERR(filename))
-		goto out;
-	preempt_disable();
-	if (regs->msr & MSR_FP)
-		giveup_fpu(current);
-#ifdef CONFIG_ALTIVEC
-	if (regs->msr & MSR_VEC)
-		giveup_altivec(current);
-#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_SPE
-	if (regs->msr & MSR_SPE)
-		giveup_spe(current);
-#endif /* CONFIG_SPE */
-	preempt_enable();
-	error = do_execve(filename, (char __user *__user *) a1,
-			  (char __user *__user *) a2, regs);
-	if (error == 0) {
-		task_lock(current);
-		current->ptrace &= ~PT_DTRACE;
-		task_unlock(current);
-	}
-	putname(filename);
-out:
-	return error;
-}
-
-void dump_stack(void)
-{
-	show_stack(current, NULL);
-}
-
-EXPORT_SYMBOL(dump_stack);
-
-void show_stack(struct task_struct *tsk, unsigned long *stack)
-{
-	unsigned long sp, stack_top, prev_sp, ret;
-	int count = 0;
-	unsigned long next_exc = 0;
-	struct pt_regs *regs;
-	extern char ret_from_except, ret_from_except_full, ret_from_syscall;
-
-	sp = (unsigned long) stack;
-	if (tsk == NULL)
-		tsk = current;
-	if (sp == 0) {
-		if (tsk == current)
-			asm("mr %0,1" : "=r" (sp));
-		else
-			sp = tsk->thread.ksp;
-	}
-
-	prev_sp = (unsigned long) (tsk->thread_info + 1);
-	stack_top = (unsigned long) tsk->thread_info + THREAD_SIZE;
-	while (count < 16 && sp > prev_sp && sp < stack_top && (sp & 3) == 0) {
-		if (count == 0) {
-			printk("Call trace:");
-#ifdef CONFIG_KALLSYMS
-			printk("\n");
-#endif
-		} else {
-			if (next_exc) {
-				ret = next_exc;
-				next_exc = 0;
-			} else
-				ret = *(unsigned long *)(sp + 4);
-			printk(" [%08lx] ", ret);
-#ifdef CONFIG_KALLSYMS
-			print_symbol("%s", ret);
-			printk("\n");
-#endif
-			if (ret == (unsigned long) &ret_from_except
-			    || ret == (unsigned long) &ret_from_except_full
-			    || ret == (unsigned long) &ret_from_syscall) {
-				/* sp + 16 points to an exception frame */
-				regs = (struct pt_regs *) (sp + 16);
-				if (sp + 16 + sizeof(*regs) <= stack_top)
-					next_exc = regs->nip;
-			}
-		}
-		++count;
-		sp = *(unsigned long *)sp;
-	}
-#ifndef CONFIG_KALLSYMS
-	if (count > 0)
-		printk("\n");
-#endif
-}
-
-#if 0
-/*
- * Low level print for debugging - Cort
- */
-int __init ll_printk(const char *fmt, ...)
-{
-        va_list args;
-	char buf[256];
-        int i;
-
-        va_start(args, fmt);
-        i=vsprintf(buf,fmt,args);
-	ll_puts(buf);
-        va_end(args);
-        return i;
-}
-
-int lines = 24, cols = 80;
-int orig_x = 0, orig_y = 0;
-
-void puthex(unsigned long val)
-{
-	unsigned char buf[10];
-	int i;
-	for (i = 7;  i >= 0;  i--)
-	{
-		buf[i] = "0123456789ABCDEF"[val & 0x0F];
-		val >>= 4;
-	}
-	buf[8] = '\0';
-	prom_print(buf);
-}
-
-void __init ll_puts(const char *s)
-{
-	int x,y;
-	char *vidmem = (char *)/*(_ISA_MEM_BASE + 0xB8000) */0xD00B8000;
-	char c;
-	extern int mem_init_done;
-
-	if ( mem_init_done ) /* assume this means we can printk */
-	{
-		printk(s);
-		return;
-	}
-
-#if 0
-	if ( have_of )
-	{
-		prom_print(s);
-		return;
-	}
-#endif
-
-	/*
-	 * can't ll_puts on chrp without openfirmware yet.
-	 * vidmem just needs to be setup for it.
-	 * -- Cort
-	 */
-	if ( _machine != _MACH_prep )
-		return;
-	x = orig_x;
-	y = orig_y;
-
-	while ( ( c = *s++ ) != '\0' ) {
-		if ( c == '\n' ) {
-			x = 0;
-			if ( ++y >= lines ) {
-				/*scroll();*/
-				/*y--;*/
-				y = 0;
-			}
-		} else {
-			vidmem [ ( x + cols * y ) * 2 ] = c;
-			if ( ++x >= cols ) {
-				x = 0;
-				if ( ++y >= lines ) {
-					/*scroll();*/
-					/*y--;*/
-					y = 0;
-				}
-			}
-		}
-	}
-
-	orig_x = x;
-	orig_y = y;
-}
-#endif
-
-unsigned long get_wchan(struct task_struct *p)
-{
-	unsigned long ip, sp;
-	unsigned long stack_page = (unsigned long) p->thread_info;
-	int count = 0;
-	if (!p || p == current || p->state == TASK_RUNNING)
-		return 0;
-	sp = p->thread.ksp;
-	do {
-		sp = *(unsigned long *)sp;
-		if (sp < stack_page || sp >= stack_page + 8188)
-			return 0;
-		if (count > 0) {
-			ip = *(unsigned long *)(sp + 4);
-			if (!in_sched_functions(ip))
-				return ip;
-		}
-	} while (count++ < 16);
-	return 0;
-}
diff --git a/include/asm-ppc/system.h b/include/asm-ppc/system.h
index bd99cb53a19f..b97037348277 100644
--- a/include/asm-ppc/system.h
+++ b/include/asm-ppc/system.h
@@ -4,7 +4,6 @@
 #ifndef __PPC_SYSTEM_H
 #define __PPC_SYSTEM_H
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 
 #include <asm/atomic.h>
@@ -39,7 +38,7 @@
 #ifdef CONFIG_SMP
 #define smp_mb()	mb()
 #define smp_rmb()	rmb()
-#define smp_wmb()	wmb()
+#define smp_wmb()	__asm__ __volatile__ ("eieio" : : : "memory")
 #define smp_read_barrier_depends()	read_barrier_depends()
 #else
 #define smp_mb()	barrier()
@@ -74,6 +73,7 @@ extern void chrp_nvram_init(void);
 extern void read_rtc_time(void);
 extern void pmac_find_display(void);
 extern void giveup_fpu(struct task_struct *);
+extern void disable_kernel_fp(void);
 extern void enable_kernel_fp(void);
 extern void flush_fp_to_thread(struct task_struct *);
 extern void enable_kernel_altivec(void);
@@ -86,6 +86,14 @@ extern int fix_alignment(struct pt_regs *);
 extern void cvt_fd(float *from, double *to, struct thread_struct *thread);
 extern void cvt_df(double *from, float *to, struct thread_struct *thread);
 
+#ifndef CONFIG_SMP
+extern void discard_lazy_cpu_state(void);
+#else
+static inline void discard_lazy_cpu_state(void)
+{
+}
+#endif
+
 #ifdef CONFIG_ALTIVEC
 extern void flush_altivec_to_thread(struct task_struct *);
 #else
-- 
cgit v1.2.3