Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/…

…aegl/linux-2.6.git

arch/ia64/Kconfig

@@ -329,7 +329,7 @@ menu "Power management and ACPI"
 
 config PM
 	bool "Power Management support"
-	depends on IA64_GENERIC || IA64_DIG || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB
+	depends on !IA64_HP_SIM
 	default y
 	help
 	  "Power Management" means that parts of your computer are shut

arch/ia64/configs/sn2_defconfig

@@ -574,6 +574,8 @@ CONFIG_SERIAL_NONSTANDARD=y
 # CONFIG_N_HDLC is not set
 # CONFIG_STALDRV is not set
 CONFIG_SGI_SNSC=y
+CONFIG_SGI_TIOCX=y
+CONFIG_SGI_MBCS=m
 
 #
 # Serial drivers

arch/ia64/hp/common/sba_iommu.c

@@ -1,9 +1,9 @@
 /*
 **  IA64 System Bus Adapter (SBA) I/O MMU manager
 **
-**	(c) Copyright 2002-2004 Alex Williamson
+**	(c) Copyright 2002-2005 Alex Williamson
 **	(c) Copyright 2002-2003 Grant Grundler
-**	(c) Copyright 2002-2004 Hewlett-Packard Company
+**	(c) Copyright 2002-2005 Hewlett-Packard Company
 **
 **	Portions (c) 2000 Grant Grundler (from parisc I/O MMU code)
 **	Portions (c) 1999 Dave S. Miller (from sparc64 I/O MMU code)
@@ -459,21 +459,32 @@ get_iovp_order (unsigned long size)
  * sba_search_bitmap - find free space in IO PDIR resource bitmap
  * @ioc: IO MMU structure which owns the pdir we are interested in.
  * @bits_wanted: number of entries we need.
+ * @use_hint: use res_hint to indicate where to start looking
  *
  * Find consecutive free bits in resource bitmap.
  * Each bit represents one entry in the IO Pdir.
  * Cool perf optimization: search for log2(size) bits at a time.
  */
 static SBA_INLINE unsigned long
-sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted)
+sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
 {
-	unsigned long *res_ptr = ioc->res_hint;
+	unsigned long *res_ptr;
 	unsigned long *res_end = (unsigned long *) &(ioc->res_map[ioc->res_size]);
-	unsigned long pide = ~0UL;
+	unsigned long flags, pide = ~0UL;
 
 	ASSERT(((unsigned long) ioc->res_hint & (sizeof(unsigned long) - 1UL)) == 0);
 	ASSERT(res_ptr < res_end);
 
+	spin_lock_irqsave(&ioc->res_lock, flags);
+
+	/* Allow caller to force a search through the entire resource space */
+	if (likely(use_hint)) {
+		res_ptr = ioc->res_hint;
+	} else {
+		res_ptr = (ulong *)ioc->res_map;
+		ioc->res_bitshift = 0;
+	}
+
 	/*
 	 * N.B.  REO/Grande defect AR2305 can cause TLB fetch timeouts
 	 * if a TLB entry is purged while in use.  sba_mark_invalid()
@@ -570,10 +581,12 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted)
 	prefetch(ioc->res_map);
 	ioc->res_hint = (unsigned long *) ioc->res_map;
 	ioc->res_bitshift = 0;
+	spin_unlock_irqrestore(&ioc->res_lock, flags);
 	return (pide);
 
 found_it:
 	ioc->res_hint = res_ptr;
+	spin_unlock_irqrestore(&ioc->res_lock, flags);
 	return (pide);
 }
 
@@ -594,47 +607,48 @@ sba_alloc_range(struct ioc *ioc, size_t size)
 	unsigned long itc_start;
 #endif
 	unsigned long pide;
-	unsigned long flags;
 
 	ASSERT(pages_needed);
 	ASSERT(0 == (size & ~iovp_mask));
 
-	spin_lock_irqsave(&ioc->res_lock, flags);
-
 #ifdef PDIR_SEARCH_TIMING
 	itc_start = ia64_get_itc();
 #endif
 	/*
 	** "seek and ye shall find"...praying never hurts either...
 	*/
-	pide = sba_search_bitmap(ioc, pages_needed);
+	pide = sba_search_bitmap(ioc, pages_needed, 1);
 	if (unlikely(pide >= (ioc->res_size << 3))) {
-		pide = sba_search_bitmap(ioc, pages_needed);
+		pide = sba_search_bitmap(ioc, pages_needed, 0);
 		if (unlikely(pide >= (ioc->res_size << 3))) {
 #if DELAYED_RESOURCE_CNT > 0
+			unsigned long flags;
+
 			/*
 			** With delayed resource freeing, we can give this one more shot.  We're
 			** getting close to being in trouble here, so do what we can to make this
 			** one count.
 			*/
-			spin_lock(&ioc->saved_lock);
+			spin_lock_irqsave(&ioc->saved_lock, flags);
 			if (ioc->saved_cnt > 0) {
 				struct sba_dma_pair *d;
 				int cnt = ioc->saved_cnt;
 
-				d = &(ioc->saved[ioc->saved_cnt]);
+				d = &(ioc->saved[ioc->saved_cnt - 1]);
 
+				spin_lock(&ioc->res_lock);
 				while (cnt--) {
 					sba_mark_invalid(ioc, d->iova, d->size);
 					sba_free_range(ioc, d->iova, d->size);
 					d--;
 				}
 				ioc->saved_cnt = 0;
 				READ_REG(ioc->ioc_hpa+IOC_PCOM);	/* flush purges */
+				spin_unlock(&ioc->res_lock);
 			}
-			spin_unlock(&ioc->saved_lock);
+			spin_unlock_irqrestore(&ioc->saved_lock, flags);
 
-			pide = sba_search_bitmap(ioc, pages_needed);
+			pide = sba_search_bitmap(ioc, pages_needed, 0);
 			if (unlikely(pide >= (ioc->res_size << 3)))
 				panic(__FILE__ ": I/O MMU @ %p is out of mapping resources\n",
 				      ioc->ioc_hpa);
@@ -664,8 +678,6 @@ sba_alloc_range(struct ioc *ioc, size_t size)
 		(uint) ((unsigned long) ioc->res_hint - (unsigned long) ioc->res_map),
 		ioc->res_bitshift );
 
-	spin_unlock_irqrestore(&ioc->res_lock, flags);
-
 	return (pide);
 }
 
@@ -950,6 +962,30 @@ sba_map_single(struct device *dev, void *addr, size_t size, int dir)
 	return SBA_IOVA(ioc, iovp, offset);
 }
 
+#ifdef ENABLE_MARK_CLEAN
+static SBA_INLINE void
+sba_mark_clean(struct ioc *ioc, dma_addr_t iova, size_t size)
+{
+	u32	iovp = (u32) SBA_IOVP(ioc,iova);
+	int	off = PDIR_INDEX(iovp);
+	void	*addr;
+
+	if (size <= iovp_size) {
+		addr = phys_to_virt(ioc->pdir_base[off] &
+		                    ~0xE000000000000FFFULL);
+		mark_clean(addr, size);
+	} else {
+		do {
+			addr = phys_to_virt(ioc->pdir_base[off] &
+			                    ~0xE000000000000FFFULL);
+			mark_clean(addr, min(size, iovp_size));
+			off++;
+			size -= iovp_size;
+		} while (size > 0);
+	}
+}
+#endif
+
 /**
  * sba_unmap_single - unmap one IOVA and free resources
  * @dev: instance of PCI owned by the driver that's asking.
@@ -995,6 +1031,10 @@ void sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, int dir)
 	size += offset;
 	size = ROUNDUP(size, iovp_size);
 
+#ifdef ENABLE_MARK_CLEAN
+	if (dir == DMA_FROM_DEVICE)
+		sba_mark_clean(ioc, iova, size);
+#endif
 
 #if DELAYED_RESOURCE_CNT > 0
 	spin_lock_irqsave(&ioc->saved_lock, flags);
@@ -1021,30 +1061,6 @@ void sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, int dir)
 	READ_REG(ioc->ioc_hpa+IOC_PCOM);	/* flush purges */
 	spin_unlock_irqrestore(&ioc->res_lock, flags);
 #endif /* DELAYED_RESOURCE_CNT == 0 */
-#ifdef ENABLE_MARK_CLEAN
-	if (dir == DMA_FROM_DEVICE) {
-		u32 iovp = (u32) SBA_IOVP(ioc,iova);
-		int off = PDIR_INDEX(iovp);
-		void *addr;
-
-		if (size <= iovp_size) {
-			addr = phys_to_virt(ioc->pdir_base[off] &
-					    ~0xE000000000000FFFULL);
-			mark_clean(addr, size);
-		} else {
-			size_t byte_cnt = size;
-
-			do {
-				addr = phys_to_virt(ioc->pdir_base[off] &
-				                    ~0xE000000000000FFFULL);
-				mark_clean(addr, min(byte_cnt, iovp_size));
-				off++;
-				byte_cnt -= iovp_size;
-
-			   } while (byte_cnt > 0);
-		}
-	}
-#endif
 }
 
 

arch/ia64/kernel/entry.S

@@ -728,12 +728,8 @@ ENTRY(ia64_leave_syscall)
 	mov f8=f0		// clear f8
 	;;
 	ld8 r30=[r2],16		// M0|1 load cr.ifs
-	mov.m ar.ssd=r0		// M2 clear ar.ssd
-	cmp.eq p9,p0=r0,r0	// set p9 to indicate that we should restore cr.ifs
-	;;
 	ld8 r25=[r3],16		// M0|1 load ar.unat
-	mov.m ar.csd=r0		// M2 clear ar.csd
-	mov r22=r0		// clear r22
+	cmp.eq p9,p0=r0,r0	// set p9 to indicate that we should restore cr.ifs
 	;;
 	ld8 r26=[r2],PT(B0)-PT(AR_PFS)	// M0|1 load ar.pfs
 (pKStk)	mov r22=psr		// M2 read PSR now that interrupts are disabled
@@ -756,11 +752,15 @@ ENTRY(ia64_leave_syscall)
 	mov f7=f0		// clear f7
 	;;
 	ld8.fill r12=[r2]	// restore r12 (sp)
+	mov.m ar.ssd=r0		// M2 clear ar.ssd
+	mov r22=r0		// clear r22
+
 	ld8.fill r15=[r3]	// restore r15
+(pUStk) st1 [r14]=r17
 	addl r3=THIS_CPU(ia64_phys_stacked_size_p8),r0
 	;;
-(pUStk)	ld4 r3=[r3]		// r3 = cpu_data->phys_stacked_size_p8
-(pUStk) st1 [r14]=r17
+(pUStk)	ld4 r17=[r3]		// r17 = cpu_data->phys_stacked_size_p8
+	mov.m ar.csd=r0		// M2 clear ar.csd
 	mov b6=r18		// I0  restore b6
 	;;
 	mov r14=r0		// clear r14