Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge

Fix up delete/modify conflict of arch/ppc/kernel/process.c by hand (it's
gone, gone, gone).

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

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;
 

arch/powerpc/kernel/process.c

@@ -201,13 +201,13 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs)
 }
 #endif /* CONFIG_SPE */
 
+#ifndef CONFIG_SMP
 /*
  * If we are doing lazy switching of CPU state (FP, altivec or SPE),
  * and the current task has some state, discard it.
  */
-static inline void discard_lazy_cpu_state(void)
+void discard_lazy_cpu_state(void)
 {
-#ifndef CONFIG_SMP
 	preempt_disable();
 	if (last_task_used_math == current)
 		last_task_used_math = NULL;
@@ -220,9 +220,10 @@ static inline void discard_lazy_cpu_state(void)
 		last_task_used_spe = NULL;
 #endif
 	preempt_enable();
-#endif /* CONFIG_SMP */
 }
+#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);

arch/powerpc/kernel/prom.c

@@ -1100,17 +1100,37 @@ static int __init early_init_dt_scan_memory(unsigned long node,
 
 static void __init early_reserve_mem(void)
 {
-	unsigned long base, size;
-	unsigned long *reserve_map;
+	u64 base, size;
+	u64 *reserve_map;
 
-	reserve_map = (unsigned long *)(((unsigned long)initial_boot_params) +
+	reserve_map = (u64 *)(((unsigned long)initial_boot_params) +
 					initial_boot_params->off_mem_rsvmap);
+#ifdef CONFIG_PPC32
+	/* 
+	 * Handle the case where we might be booting from an old kexec
+	 * image that setup the mem_rsvmap as pairs of 32-bit values
+	 */
+	if (*reserve_map > 0xffffffffull) {
+		u32 base_32, size_32;
+		u32 *reserve_map_32 = (u32 *)reserve_map;
+
+		while (1) {
+			base_32 = *(reserve_map_32++);
+			size_32 = *(reserve_map_32++);
+			if (size_32 == 0)
+				break;
+			DBG("reserving: %lx -> %lx\n", base_32, size_32);
+			lmb_reserve(base_32, size_32);
+		}
+		return;
+	}
+#endif
 	while (1) {
 		base = *(reserve_map++);
 		size = *(reserve_map++);
 		if (size == 0)
 			break;
-		DBG("reserving: %lx -> %lx\n", base, size);
+		DBG("reserving: %llx -> %llx\n", base, size);
 		lmb_reserve(base, size);
 	}
 

arch/powerpc/kernel/prom_init.c

@@ -137,8 +137,8 @@ struct prom_t {
 };
 
 struct mem_map_entry {
-	unsigned long	base;
-	unsigned long	size;
+	u64	base;
+	u64	size;
 };
 
 typedef u32 cell_t;
@@ -897,9 +897,9 @@ static unsigned long __init prom_next_cell(int s, cell_t **cellp)
  * If problems seem to show up, it would be a good start to track
  * them down.
  */
-static void reserve_mem(unsigned long base, unsigned long size)
+static void reserve_mem(u64 base, u64 size)
 {
-	unsigned long top = base + size;
+	u64 top = base + size;
 	unsigned long cnt = RELOC(mem_reserve_cnt);
 
 	if (size == 0)

arch/powerpc/kernel/signal_32.c

@@ -497,6 +497,15 @@ static long restore_user_regs(struct pt_regs *regs,
 	if (err)
 		return 1;
 
+	/*
+	 * Do this before updating the thread state in
+	 * current->thread.fpr/vr/evr.  That way, if we get preempted
+	 * and another task grabs the FPU/Altivec/SPE, it won't be
+	 * tempted to save the current CPU state into the thread_struct
+	 * and corrupt what we are writing there.
+	 */
+	discard_lazy_cpu_state();
+
 	/* force the process to reload the FP registers from
 	   current->thread when it next does FP instructions */
 	regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1);
@@ -538,18 +547,6 @@ static long restore_user_regs(struct pt_regs *regs,
 		return 1;
 #endif /* CONFIG_SPE */
 
-#ifndef CONFIG_SMP
-	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();
-#endif
 	return 0;
 }
 

arch/powerpc/kernel/signal_64.c

@@ -207,10 +207,20 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
 
 	if (!sig)
 		regs->gpr[13] = save_r13;
-	err |= __copy_from_user(&current->thread.fpr, &sc->fp_regs, FP_REGS_SIZE);
 	if (set != NULL)
 		err |=  __get_user(set->sig[0], &sc->oldmask);
 
+	/*
+	 * Do this before updating the thread state in
+	 * current->thread.fpr/vr.  That way, if we get preempted
+	 * and another task grabs the FPU/Altivec, it won't be
+	 * tempted to save the current CPU state into the thread_struct
+	 * and corrupt what we are writing there.
+	 */
+	discard_lazy_cpu_state();
+
+	err |= __copy_from_user(&current->thread.fpr, &sc->fp_regs, FP_REGS_SIZE);
+
 #ifdef CONFIG_ALTIVEC
 	err |= __get_user(v_regs, &sc->v_regs);
 	err |= __get_user(msr, &sc->gp_regs[PT_MSR]);
@@ -229,14 +239,6 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
 		current->thread.vrsave = 0;
 #endif /* CONFIG_ALTIVEC */
 
-#ifndef CONFIG_SMP
-	preempt_disable();
-	if (last_task_used_math == current)
-		last_task_used_math = NULL;
-	if (last_task_used_altivec == current)
-		last_task_used_altivec = NULL;
-	preempt_enable();
-#endif
 	/* Force reload of FP/VEC */
 	regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1 | MSR_VEC);
 

arch/powerpc/platforms/cell/pervasive.c

@@ -142,7 +142,7 @@ static void cbe_idle(void)
 	}
 }
 
-int cbe_system_reset_exception(struct pt_regs *regs)
+static int cbe_system_reset_exception(struct pt_regs *regs)
 {
 	switch (regs->msr & SRR1_WAKEMASK) {
 	case SRR1_WAKEEE:

arch/powerpc/platforms/cell/setup.c

@@ -57,7 +57,7 @@
 #define DBG(fmt...)
 #endif
 
-void cell_show_cpuinfo(struct seq_file *m)
+static void cell_show_cpuinfo(struct seq_file *m)
 {
 	struct device_node *root;
 	const char *model = "";

arch/powerpc/platforms/cell/spufs/syscalls.c

@@ -29,7 +29,9 @@
  * value of the spu_status register after the SPU has stopped.
  *
  */
-long do_spu_run(struct file *filp, __u32 __user *unpc, __u32 __user *ustatus)
+static long do_spu_run(struct file *filp,
+			__u32 __user *unpc,
+			__u32 __user *ustatus)
 {
 	long ret;
 	struct spufs_inode_info *i;

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

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;
 
 

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 */

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 */
@@ -147,20 +149,11 @@ 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",
@@ -334,6 +327,8 @@ int __init iSeries_allocate_IRQ(HvBusNumber bus,
 	return virtirq;
 }
 
+#endif /* CONFIG_PCI */
+
 /*
  * Get the next pending IRQ.
  */
@@ -353,6 +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++) {
@@ -366,6 +362,7 @@ int iSeries_get_irq(struct pt_regs *regs)
 		if (irq >= NR_IRQS)
 			irq = -2;
 	}
+#endif
 
 	return irq;
 }

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 */

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)

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");
 }

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;
 

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);
 

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);
 		}