Merge samba.org:/scratch/anton/linux-2.5

into samba.org:/scratch/anton/tmp3

arch/ppc64/boot/Makefile

@@ -98,7 +98,7 @@ $(call gz-sec, $(required)): $(obj)/kernel-%.gz: % FORCE
 $(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz
 	cp -f $(obj)/ramdisk.image.gz $@
 
-$(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz
+$(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz FORCE
 	touch $@
 
 $(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c FORCE

arch/ppc64/kernel/head.S

@@ -1106,9 +1106,11 @@ SLB_NUM_ENTRIES = 64
 	oris    r21,r23,2048   /* valid bit    */
 	rldimi  r21,r22,0,52   /* Insert entry */
 
-	isync
+	/* 
+	 * No need for an isync before or after this slbmte. The exception
+	 * we enter with and the rfid we exit with are context synchronizing .
+	 */
 	slbmte  r20,r21
-	isync
 
 	/* All done -- return from exception. */
 	mfsprg  r20,3                   /* Load the PACA pointer  */
@@ -1861,9 +1863,9 @@ _STATIC(start_here_common)
 	li	r5,0
 	std	r0,PACAKSAVE(r13)
 
-	/* ptr to hardware interrupt stack for processor 0                */
+	/* ptr to hardware interrupt stack for boot processor */
 	LOADADDR(r3, hardware_int_paca0)
-	li      r5,0x1000
+	li      r5,PAGE_SIZE
 	sldi    r5,r5,3
 	subi    r5,r5,STACK_FRAME_OVERHEAD
 
@@ -1991,7 +1993,7 @@ ioremap_dir:
 
 	.globl  hardware_int_paca0
 hardware_int_paca0:
-	.space	8*4096
+	.space	8*PAGE_SIZE
 
 /* 1 page segment table per cpu (max 48, cpu0 allocated at STAB0_PHYS_ADDR) */
 	.globl	stab_array

arch/ppc64/kernel/iSeries_setup.c

@@ -864,7 +864,7 @@ static void iSeries_setup_dprofile(void)
 {
 	if ( dprof_buffer ) {
 		unsigned i;
-		for (i=0; i<MAX_PACAS; ++i) {
+		for (i=0; i<NR_CPUS; ++i) {
 			paca[i].prof_shift = dprof_shift;
 			paca[i].prof_len = dprof_len-1;
 			paca[i].prof_buffer = dprof_buffer;

arch/ppc64/kernel/irq.c

@@ -676,7 +676,7 @@ static int prof_cpu_mask_write_proc (struct file *file, const char *buffer,
 #ifdef CONFIG_PPC_ISERIES
 	{
 		unsigned i;
-		for (i=0; i<MAX_PACAS; ++i) {
+		for (i=0; i<NR_CPUS; ++i) {
 			if ( paca[i].prof_buffer && (new_value & 1) )
 				paca[i].prof_enabled = 1;
 			else

arch/ppc64/kernel/pacaData.c

@@ -64,7 +64,7 @@ struct systemcfg *systemcfg;
 		(&paca[number].exception_stack[0]) - EXC_FRAME_SIZE,	    \
 }
 
-struct paca_struct paca[MAX_PACAS] __page_aligned = {
+struct paca_struct paca[NR_CPUS] __page_aligned = {
 #ifdef CONFIG_PPC_ISERIES
 	PACAINITDATA( 0, 1, &xItLpQueue, 0, STAB0_VIRT_ADDR),
 #else
@@ -101,6 +101,7 @@ struct paca_struct paca[MAX_PACAS] __page_aligned = {
 	PACAINITDATA(29, 0, 0, 0, 0),
 	PACAINITDATA(30, 0, 0, 0, 0),
 	PACAINITDATA(31, 0, 0, 0, 0),
+#if NR_CPUS > 32
 	PACAINITDATA(32, 0, 0, 0, 0),
 	PACAINITDATA(33, 0, 0, 0, 0),
 	PACAINITDATA(34, 0, 0, 0, 0),
@@ -116,5 +117,22 @@ struct paca_struct paca[MAX_PACAS] __page_aligned = {
 	PACAINITDATA(44, 0, 0, 0, 0),
 	PACAINITDATA(45, 0, 0, 0, 0),
 	PACAINITDATA(46, 0, 0, 0, 0),
-	PACAINITDATA(47, 0, 0, 0, 0)
+	PACAINITDATA(47, 0, 0, 0, 0),
+	PACAINITDATA(48, 0, 0, 0, 0),
+	PACAINITDATA(49, 0, 0, 0, 0),
+	PACAINITDATA(50, 0, 0, 0, 0),
+	PACAINITDATA(51, 0, 0, 0, 0),
+	PACAINITDATA(52, 0, 0, 0, 0),
+	PACAINITDATA(53, 0, 0, 0, 0),
+	PACAINITDATA(54, 0, 0, 0, 0),
+	PACAINITDATA(55, 0, 0, 0, 0),
+	PACAINITDATA(56, 0, 0, 0, 0),
+	PACAINITDATA(57, 0, 0, 0, 0),
+	PACAINITDATA(58, 0, 0, 0, 0),
+	PACAINITDATA(59, 0, 0, 0, 0),
+	PACAINITDATA(60, 0, 0, 0, 0),
+	PACAINITDATA(61, 0, 0, 0, 0),
+	PACAINITDATA(62, 0, 0, 0, 0),
+	PACAINITDATA(63, 0, 0, 0, 0),
+#endif
 };

arch/ppc64/kernel/pci.c

@@ -124,7 +124,7 @@ struct pci_dev *pci_find_dev_by_addr(unsigned long addr)
 	ioaddr = (addr > isa_io_base) ? addr - isa_io_base : 0;
 
 	pci_for_each_dev(dev) {
-		if ((dev->class >> 8) == PCI_BASE_CLASS_BRIDGE)
+		if ((dev->class >> 16) == PCI_BASE_CLASS_BRIDGE)
 			continue;
 		for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
 			unsigned long start = pci_resource_start(dev,i);

arch/ppc64/kernel/pci_dma.c

@@ -710,12 +710,6 @@ void create_tce_tables_for_busesLP(struct list_head *bus_list)
 	for (ln=bus_list->next; ln != bus_list; ln=ln->next) {
 		bus = pci_bus_b(ln);
 		busdn = PCI_GET_DN(bus);
-		/* NOTE: there should never be a window declared on a bus when
-		 * child devices also have a window.  If this should ever be
-		 * architected, we probably want children to have priority.
-		 * In reality, the PHB containing ISA has the property, but otherwise
-		 * it is the pci-bridges that have the property.
-		 */
 		dma_window = (u32 *)get_property(busdn, "ibm,dma-window", 0);
 		if (dma_window) {
 			/* Bussubno hasn't been copied yet.
@@ -724,6 +718,7 @@ void create_tce_tables_for_busesLP(struct list_head *bus_list)
 			busdn->bussubno = bus->number;
 			create_pci_bus_tce_table((unsigned long)busdn);
 		}
+		/* look for a window on a bridge even if the PHB had one */
 		create_tce_tables_for_busesLP(&bus->children);
 	}
 }

arch/ppc64/kernel/prom.c

@@ -1134,7 +1134,7 @@ prom_init(unsigned long r3, unsigned long r4, unsigned long pp,
 	_prom->cpu = (int)(unsigned long)getprop_rval;
 	_xPaca[_prom->cpu].active = 1;
 #ifdef CONFIG_SMP
-	RELOC(cpu_online_map) = 1 << _prom->cpu;
+	RELOC(cpu_online_map) = 1UL << _prom->cpu;
 #endif
 	RELOC(boot_cpuid) = _prom->cpu;
 

arch/ppc64/kernel/setup.c

@@ -194,7 +194,7 @@ void setup_system(unsigned long r3, unsigned long r4, unsigned long r5,
 	printk("naca->pftSize                 = 0x%lx\n", naca->pftSize);
 	printk("naca->debug_switch            = 0x%lx\n", naca->debug_switch);
 	printk("naca->interrupt_controller    = 0x%ld\n", naca->interrupt_controller);
-	printk("systemcf                      = 0x%p\n", systemcfg);
+	printk("systemcfg                      = 0x%p\n", systemcfg);
 	printk("systemcfg->processorCount     = 0x%lx\n", systemcfg->processorCount);
 	printk("systemcfg->physicalMemorySize = 0x%lx\n", systemcfg->physicalMemorySize);
 	printk("systemcfg->dCacheL1LineSize   = 0x%x\n", systemcfg->dCacheL1LineSize);
@@ -256,7 +256,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		return 0;
 	}
 
-	if (!(cpu_online_map & (1<<cpu_id)))
+	if (!(cpu_online_map & (1UL << cpu_id)))
 		return 0;
 
 #ifdef CONFIG_SMP
@@ -584,7 +584,7 @@ int set_spread_lpevents( char * str )
 	/* The parameter is the number of processors to share in processing lp events */
 	unsigned long i;
 	unsigned long val = simple_strtoul( str, NULL, 0 );
-	if ( ( val > 0 ) && ( val <= MAX_PACAS ) ) {
+	if ( ( val > 0 ) && ( val <= NR_CPUS ) ) {
 		for ( i=1; i<val; ++i )
 			paca[i].lpQueuePtr = paca[0].lpQueuePtr;
 		printk("lpevent processing spread over %ld processors\n", val);

arch/ppc64/kernel/signal.c

@@ -69,13 +69,11 @@ struct rt_sigframe {
 };
 
 
-extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
-
 /*
  * Atomically swap in the new signal mask, and wait for a signal.
  */
-long sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize, int p3, int p4, int p6,
-		  int p7, struct pt_regs *regs)
+long sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize, int p3, int p4,
+		       int p6, int p7, struct pt_regs *regs)
 {
 	sigset_t saveset, newset;
 
@@ -390,8 +388,6 @@ syscall_restart(struct pt_regs *regs, struct k_sigaction *ka)
  * want to handle. Thus you cannot kill init even with a SIGKILL even by
  * mistake.
  */
-extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
-
 int do_signal(sigset_t *oldset, struct pt_regs *regs)
 {
 	siginfo_t info;

arch/ppc64/kernel/signal32.c

@@ -563,10 +563,6 @@ long sys32_rt_sigaction(int sig, const struct sigaction32 *act,
 	return ret;
 }
 
-
-extern long sys_rt_sigprocmask(int how, sigset_t *set,
-		sigset_t *oset, size_t sigsetsize);
-
 /*
  * Note: it is necessary to treat how as an unsigned int, with the
  * corresponding cast to a signed int to insure that the proper
@@ -613,10 +609,6 @@ long sys32_rt_sigprocmask(u32 how, compat_sigset_t *set,
 	return 0;
 }
 
-
-extern long sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
-
-
 long sys32_rt_sigpending(compat_sigset_t *set, compat_size_t sigsetsize)
 {
 	sigset_t s;
@@ -683,11 +675,6 @@ static int copy_siginfo_to_user32(siginfo_t32 *d, siginfo_t *s)
 	return err;
 }
 
-
-extern long sys_rt_sigtimedwait(const sigset_t *uthese,
-		siginfo_t *uinfo, const struct timespec *uts,
-		size_t sigsetsize);
-
 long sys32_rt_sigtimedwait(compat_sigset_t *uthese, siginfo_t32 *uinfo,
 		struct compat_timespec *uts, compat_size_t sigsetsize)
 {
@@ -758,9 +745,6 @@ static siginfo_t * siginfo32to64(siginfo_t *d, siginfo_t32 *s)
 	return d;
 }
 
-
-extern long sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
-
 /*
  * Note: it is necessary to treat pid and sig as unsigned ints, with the
  * corresponding cast to a signed int to insure that the proper conversion
@@ -786,8 +770,6 @@ long sys32_rt_sigqueueinfo(u32 pid, u32 sig, siginfo_t32 *uinfo)
 	return ret;
 }
 
-extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
-
 int sys32_rt_sigsuspend(compat_sigset_t* unewset, size_t sigsetsize, int p3,
 		int p4, int p6, int p7, struct pt_regs *regs)
 {

arch/ppc64/kernel/smp.c

@@ -113,7 +113,7 @@ static int smp_iSeries_numProcs(void)
 	struct ItLpPaca * lpPaca;
 
 	np = 0;
-        for (i=0; i < MAX_PACAS; ++i) {
+        for (i=0; i < NR_CPUS; ++i) {
                 lpPaca = paca[i].xLpPacaPtr;
                 if ( lpPaca->xDynProcStatus < 2 ) {
                         ++np;
@@ -128,7 +128,7 @@ static int smp_iSeries_probe(void)
 	unsigned np = 0;
 	struct ItLpPaca *lpPaca;
 
-	for (i=0; i < MAX_PACAS; ++i) {
+	for (i=0; i < NR_CPUS; ++i) {
 		lpPaca = paca[i].xLpPacaPtr;
 		if (lpPaca->xDynProcStatus < 2) {
 			paca[i].active = 1;
@@ -144,7 +144,7 @@ static void smp_iSeries_kick_cpu(int nr)
 	struct ItLpPaca * lpPaca;
 	/* Verify we have a Paca for processor nr */
 	if ( ( nr <= 0 ) ||
-	     ( nr >= MAX_PACAS ) )
+	     ( nr >= NR_CPUS ) )
 		return;
 	/* Verify that our partition has a processor nr */
 	lpPaca = paca[nr].xLpPacaPtr;
@@ -228,7 +228,7 @@ smp_kick_cpu(int nr)
 {
 	/* Verify we have a Paca for processor nr */
 	if ( ( nr <= 0 ) ||
-	     ( nr >= MAX_PACAS ) )
+	     ( nr >= NR_CPUS ) )
 		return;
 
 	/* The information for processor bringup must

arch/ppc64/kernel/stab.c

@@ -23,7 +23,8 @@
 #include <asm/pmc.h>
 
 int make_ste(unsigned long stab, unsigned long esid, unsigned long vsid);
-void make_slbe(unsigned long esid, unsigned long vsid, int large);
+void make_slbe(unsigned long esid, unsigned long vsid, int large,
+	       int kernel_segment);
 
 /*
  * Build an entry for the base kernel segment and put it into
@@ -45,7 +46,8 @@ void stab_initialize(unsigned long stab)
 		asm volatile("isync":::"memory");
 		asm volatile("slbmte  %0,%0"::"r" (0) : "memory");
 		asm volatile("isync; slbia; isync":::"memory");
-		make_slbe(esid, vsid, 0);
+		make_slbe(esid, vsid, 0, 1);
+		asm volatile("isync":::"memory");
 #endif
 	} else {
 		asm volatile("isync; slbia; isync":::"memory");
@@ -139,10 +141,13 @@ int make_ste(unsigned long stab, unsigned long esid, unsigned long vsid)
 
 /*
  * Create a segment buffer entry for the given esid/vsid pair.
+ *
+ * NOTE: A context syncronising instruction is required before and after
+ * this, in the common case we use exception entry and rfid.
  */
-void make_slbe(unsigned long esid, unsigned long vsid, int large)
+void make_slbe(unsigned long esid, unsigned long vsid, int large,
+	       int kernel_segment)
 {
-	int kernel_segment = 0;
 	unsigned long entry, castout_entry;
 	union {
 		unsigned long word0;
@@ -153,42 +158,15 @@ void make_slbe(unsigned long esid, unsigned long vsid, int large)
 		slb_dword1    data;
 	} vsid_data;
 
-	if (REGION_ID(esid << SID_SHIFT) >= KERNEL_REGION_ID)
-		kernel_segment = 1;
-
 	/*
-	 * Find an empty entry, if one exists.
+	 * Find an empty entry, if one exists. Must start at 0 because
+	 * we use this code to load SLB entry 0 at boot.
 	 */
 	for (entry = 0; entry < naca->slb_size; entry++) {
 		asm volatile("slbmfee  %0,%1" 
 			     : "=r" (esid_data) : "r" (entry)); 
-		if (!esid_data.data.v) {
-			/* 
-			 * Write the new SLB entry.
-			 */
-			vsid_data.word0 = 0;
-			vsid_data.data.vsid = vsid;
-			vsid_data.data.kp = 1;
-			if (large)
-				vsid_data.data.l = 1;
-			if (kernel_segment)
-				vsid_data.data.c = 1;
-
-			esid_data.word0 = 0;
-			esid_data.data.esid = esid;
-			esid_data.data.v = 1;
-			esid_data.data.index = entry;
-
-			/* slbie not needed as no previous mapping existed. */
-			/* Order update  */
-			asm volatile("isync" : : : "memory");
-			asm volatile("slbmte  %0,%1" 
-				     : : "r" (vsid_data), 
-				     "r" (esid_data)); 
-			/* Order update  */
-			asm volatile("isync" : : : "memory");
-			return;
-		}
+		if (!esid_data.data.v)
+			goto write_entry;
 	}
 
 	/*
@@ -211,13 +189,13 @@ void make_slbe(unsigned long esid, unsigned long vsid, int large)
 		if (castout_entry >= naca->slb_size)
 			castout_entry = 1; 
 		asm volatile("slbmfee  %0,%1" : "=r" (esid_data) : "r" (entry));
-	} while (esid_data.data.esid == GET_ESID((unsigned long)_get_SP()) &&
-			esid_data.data.v);
+	} while (esid_data.data.esid == GET_ESID((unsigned long)_get_SP()));
 
 	get_paca()->xStab_data.next_round_robin = castout_entry;
 
 	/* slbie not needed as the previous mapping is still valid. */
-	
+
+write_entry:	
 	/* 
 	 * Write the new SLB entry.
 	 */
@@ -234,10 +212,11 @@ void make_slbe(unsigned long esid, unsigned long vsid, int large)
 	esid_data.data.v = 1;
 	esid_data.data.index = entry;
 
-	asm volatile("isync" : : : "memory");   /* Order update */
-	asm volatile("slbmte  %0,%1" 
-		     : : "r" (vsid_data), "r" (esid_data)); 
-	asm volatile("isync" : : : "memory" );   /* Order update */
+	/*
+	 * No need for an isync before or after this slbmte. The exception
+         * we enter with and the rfid we exit with are context synchronizing.
+	 */
+	asm volatile("slbmte  %0,%1" : : "r" (vsid_data), "r" (esid_data)); 
 }
 
 static inline void __ste_allocate(unsigned long esid, unsigned long vsid,
@@ -246,10 +225,10 @@ static inline void __ste_allocate(unsigned long esid, unsigned long vsid,
 	if (cpu_has_slb()) {
 #ifndef CONFIG_PPC_ISERIES
 		if (REGION_ID(esid << SID_SHIFT) == KERNEL_REGION_ID)
-			make_slbe(esid, vsid, 1); 
+			make_slbe(esid, vsid, 1, kernel_segment); 
 		else
 #endif
-			make_slbe(esid, vsid, 0); 
+			make_slbe(esid, vsid, 0, kernel_segment);
 	} else {
 		unsigned char top_entry, stab_entry, *segments; 
 

arch/ppc64/kernel/traps.c

@@ -349,9 +349,8 @@ ProgramCheckException(struct pt_regs *regs)
 void
 KernelFPUnavailableException(struct pt_regs *regs)
 {
-	printk("Illegal floating point used in kernel "
-			"(task=0x%p, pc=0x%016lx, trap=0x%08lx)\n",
-		current, regs->nip, regs->trap);
+	printk("Illegal floating point used in kernel (task=0x%p, "
+		"pc=0x%016lx, trap=0x%lx)\n", current, regs->nip, regs->trap);
 	panic("Unrecoverable FP Unavailable Exception in Kernel");
 }
 

include/asm-ppc64/paca.h

@@ -33,17 +33,6 @@
 #include	<asm/mmu.h>
 #include	<asm/processor.h>
 
-/* A paca entry is required for each logical processor.  On systems
- * that support hardware multi-threading, this is equal to twice the
- * number of physical processors.  On LPAR systems, we are required
- * to have space for the maximum number of logical processors we
- * could ever possibly have.  Currently, we are limited to allocating
- * 24 processors to a partition which gives 48 logical processors on
- * an HMT box.  Therefore, we reserve this many paca entries.
- */
-#define MAX_PROCESSORS 24
-#define MAX_PACAS MAX_PROCESSORS * 2
-
 extern struct paca_struct paca[];
 register struct paca_struct *local_paca asm("r13");
 #define get_paca()	local_paca

include/asm-ppc64/pci-bridge.h

@@ -77,7 +77,7 @@ struct device_node *fetch_dev_dn(struct pci_dev *dev);
 static inline struct device_node *pci_device_to_OF_node(struct pci_dev *dev)
 {
 	struct device_node *dn = (struct device_node *)(dev->sysdata);
-	if (dn->devfn == dev->devfn && dn->busno == dev->bus->number)
+	if (dn->devfn == dev->devfn && dn->busno == (dev->bus->number&0xff))
 		return dn;	/* fast path.  sysdata is good */
 	else
 		return fetch_dev_dn(dev);

include/asm-ppc64/signal.h

@@ -2,6 +2,7 @@
 #define _ASMPPC64_SIGNAL_H
 
 #include <linux/types.h>
+#include <asm/siginfo.h>
 
 /* Avoid too many header ordering problems.  */
 struct siginfo;
@@ -72,19 +73,19 @@ typedef struct {
  * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
  * Unix names RESETHAND and NODEFER respectively.
  */
-#define SA_NOCLDSTOP	0x00000001
-#define SA_NOCLDWAIT	0x00000002
-#define SA_SIGINFO	0x00000004
-#define SA_ONSTACK	0x08000000
-#define SA_RESTART	0x10000000
-#define SA_NODEFER	0x40000000
-#define SA_RESETHAND	0x80000000
+#define SA_NOCLDSTOP	0x00000001u
+#define SA_NOCLDWAIT	0x00000002u
+#define SA_SIGINFO	0x00000004u
+#define SA_ONSTACK	0x08000000u
+#define SA_RESTART	0x10000000u
+#define SA_NODEFER	0x40000000u
+#define SA_RESETHAND	0x80000000u
 
 #define SA_NOMASK	SA_NODEFER
 #define SA_ONESHOT	SA_RESETHAND
-#define SA_INTERRUPT	0x20000000 /* dummy -- ignored */
+#define SA_INTERRUPT	0x20000000u /* dummy -- ignored */
 
-#define SA_RESTORER	0x04000000
+#define SA_RESTORER	0x04000000u
 
 /* 
  * sigaltstack controls
@@ -143,6 +144,16 @@ typedef struct sigaltstack {
 	size_t ss_size;
 } stack_t;
 
+struct pt_regs;
+struct timespec;
+extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
+extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
+extern long sys_rt_sigprocmask(int how, sigset_t *set, sigset_t *oset,
+			       size_t sigsetsize);
+extern long sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
+extern long sys_rt_sigtimedwait(const sigset_t *uthese, siginfo_t *uinfo,
+				const struct timespec *uts, size_t sigsetsize);
+extern long sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 
 struct pt_regs;

include/asm-ppc64/system.h

@@ -83,6 +83,7 @@ extern void show_regs(struct pt_regs * regs);
 extern void flush_instruction_cache(void);
 extern int _get_PVR(void);
 extern void giveup_fpu(struct task_struct *);
+extern void disable_kernel_fp(void);
 extern void enable_kernel_fp(void);
 extern void cvt_fd(float *from, double *to, unsigned long *fpscr);
 extern void cvt_df(double *from, float *to, unsigned long *fpscr);