21 files changed, 165 insertions, 105 deletions

diff --git a/include/asm-ia64/machvec.h b/include/asm-ia64/machvec.h
index 79e89a7db566..ca5ea994d688 100644
--- a/include/asm-ia64/machvec.h
+++ b/include/asm-ia64/machvec.h
@@ -26,7 +26,7 @@ typedef void ia64_mv_cpu_init_t (void);
 typedef void ia64_mv_irq_init_t (void);
 typedef void ia64_mv_send_ipi_t (int, int, int, int);
 typedef void ia64_mv_timer_interrupt_t (int, void *, struct pt_regs *);
-typedef void ia64_mv_global_tlb_purge_t (unsigned long, unsigned long, unsigned long);
+typedef void ia64_mv_global_tlb_purge_t (struct mm_struct *, unsigned long, unsigned long, unsigned long);
 typedef void ia64_mv_tlb_migrate_finish_t (struct mm_struct *);
 typedef unsigned int ia64_mv_local_vector_to_irq (u8);
 typedef char *ia64_mv_pci_get_legacy_mem_t (struct pci_bus *);
@@ -37,7 +37,7 @@ typedef int ia64_mv_pci_legacy_write_t (struct pci_bus *, u16 port, u32 val,
 
 /* DMA-mapping interface: */
 typedef void ia64_mv_dma_init (void);
-typedef void *ia64_mv_dma_alloc_coherent (struct device *, size_t, dma_addr_t *, int);
+typedef void *ia64_mv_dma_alloc_coherent (struct device *, size_t, dma_addr_t *, gfp_t);
 typedef void ia64_mv_dma_free_coherent (struct device *, size_t, void *, dma_addr_t);
 typedef dma_addr_t ia64_mv_dma_map_single (struct device *, void *, size_t, int);
 typedef void ia64_mv_dma_unmap_single (struct device *, dma_addr_t, size_t, int);
diff --git a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h
index 1590dc65b30b..46501b01a5c5 100644
--- a/include/asm-ia64/meminit.h
+++ b/include/asm-ia64/meminit.h
@@ -16,10 +16,11 @@
  *      - initrd (optional)
  *      - command line string
  *      - kernel code & data
+ *      - Kernel memory map built from EFI memory map
  *
  * More could be added if necessary
  */
-#define IA64_MAX_RSVD_REGIONS 5
+#define IA64_MAX_RSVD_REGIONS 6
 
 struct rsvd_region {
         unsigned long start;    /* virtual address of beginning of element */
@@ -33,6 +34,7 @@ extern void find_memory (void);
 extern void reserve_memory (void);
 extern void find_initrd (void);
 extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg);
+extern void efi_memmap_init(unsigned long *, unsigned long *);
 
 /*
  * For rounding an address to the next IA64_GRANULE_SIZE or order
@@ -41,7 +43,7 @@ extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg
 #define GRANULEROUNDUP(n)       (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1))
 #define ORDERROUNDDOWN(n)       ((n) & ~((PAGE_SIZE<<MAX_ORDER)-1))
 
-#ifdef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_NUMA
   extern void call_pernode_memory (unsigned long start, unsigned long len, void *func);
 #else
 # define call_pernode_memory(start, len, func)  (*func)(start, len, 0)
diff --git a/include/asm-ia64/mmzone.h b/include/asm-ia64/mmzone.h
index d32f51e3d6c2..34efe88eb849 100644
--- a/include/asm-ia64/mmzone.h
+++ b/include/asm-ia64/mmzone.h
@@ -15,7 +15,7 @@
 #include <asm/page.h>
 #include <asm/meminit.h>
 
-#ifdef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_NUMA
 
 static inline int pfn_to_nid(unsigned long pfn)
 {
@@ -31,6 +31,10 @@ static inline int pfn_to_nid(unsigned long pfn)
 #endif
 }
 
+#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
+extern int early_pfn_to_nid(unsigned long pfn);
+#endif
+
 #ifdef CONFIG_IA64_DIG /* DIG systems are small */
 # define MAX_PHYSNODE_ID        8
 # define NR_NODE_MEMBLKS        (MAX_NUMNODES * 8)
@@ -39,8 +43,8 @@ static inline int pfn_to_nid(unsigned long pfn)
 # define NR_NODE_MEMBLKS        (MAX_NUMNODES * 4)
 #endif
 
-#else /* CONFIG_DISCONTIGMEM */
+#else /* CONFIG_NUMA */
 # define NR_NODE_MEMBLKS        (MAX_NUMNODES * 4)
-#endif /* CONFIG_DISCONTIGMEM */
+#endif /* CONFIG_NUMA */
 
 #endif /* _ASM_IA64_MMZONE_H */
diff --git a/include/asm-ia64/nodedata.h b/include/asm-ia64/nodedata.h
index 6b0f3ed89b7e..9978c7ce7549 100644
--- a/include/asm-ia64/nodedata.h
+++ b/include/asm-ia64/nodedata.h
@@ -17,7 +17,7 @@
 #include <asm/percpu.h>
 #include <asm/mmzone.h>
 
-#ifdef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_NUMA
 
 /*
  * Node Data. One of these structures is located on each node of a NUMA system.
@@ -47,6 +47,6 @@ struct ia64_node_data {
  */
 #define NODE_DATA(nid)          (local_node_data->pg_data_ptrs[nid])
 
-#endif /* CONFIG_DISCONTIGMEM */
+#endif /* CONFIG_NUMA */
 
 #endif /* _ASM_IA64_NODEDATA_H */
diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h
index 9edffad8c28b..ef436b9d06ad 100644
--- a/include/asm-ia64/page.h
+++ b/include/asm-ia64/page.h
@@ -102,15 +102,15 @@ do {						\
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
 extern int ia64_pfn_valid (unsigned long pfn);
-#else
+#elif defined(CONFIG_FLATMEM)
 # define ia64_pfn_valid(pfn) 1
 #endif
 
-#ifndef CONFIG_DISCONTIGMEM
+#ifdef CONFIG_FLATMEM
 # define pfn_valid(pfn)         (((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
 # define page_to_pfn(page)      ((unsigned long) (page - mem_map))
 # define pfn_to_page(pfn)       (mem_map + (pfn))
-#else
+#elif defined(CONFIG_DISCONTIGMEM)
 extern struct page *vmem_map;
 extern unsigned long max_low_pfn;
 # define pfn_valid(pfn)         (((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
diff --git a/include/asm-ia64/pgtable.h b/include/asm-ia64/pgtable.h
index 3339c7b55a6f..21e32a06bc82 100644
--- a/include/asm-ia64/pgtable.h
+++ b/include/asm-ia64/pgtable.h
@@ -236,9 +236,6 @@ ia64_phys_addr_valid (unsigned long addr)
 #define pte_modify(_pte, newprot) \
         (__pte((pte_val(_pte) & ~_PAGE_CHG_MASK) | (pgprot_val(newprot) & _PAGE_CHG_MASK)))
 
-#define page_pte_prot(page,prot)        mk_pte(page, prot)
-#define page_pte(page)                  page_pte_prot(page, __pgprot(0))
-
 #define pte_none(pte)                   (!pte_val(pte))
 #define pte_present(pte)                (pte_val(pte) & (_PAGE_P | _PAGE_PROTNONE))
 #define pte_clear(mm,addr,pte)          (pte_val(*(pte)) = 0UL)
diff --git a/include/asm-ia64/rwsem.h b/include/asm-ia64/rwsem.h
index e18b5ab0cb75..1327c91ea39c 100644
--- a/include/asm-ia64/rwsem.h
+++ b/include/asm-ia64/rwsem.h
@@ -186,4 +186,9 @@ __downgrade_write (struct rw_semaphore *sem)
 #define rwsem_atomic_add(delta, sem)    atomic64_add(delta, (atomic64_t *)(&(sem)->count))
 #define rwsem_atomic_update(delta, sem) atomic64_add_return(delta, (atomic64_t *)(&(sem)->count))
 
+static inline int rwsem_is_locked(struct rw_semaphore *sem)
+{
+        return (sem->count != 0);
+}
+
 #endif /* _ASM_IA64_RWSEM_H */
diff --git a/include/asm-ia64/semaphore.h b/include/asm-ia64/semaphore.h
index 3a2f0f3f78f3..bb8906285fab 100644
--- a/include/asm-ia64/semaphore.h
+++ b/include/asm-ia64/semaphore.h
@@ -24,8 +24,6 @@ struct semaphore {
         .wait           = __WAIT_QUEUE_HEAD_INITIALIZER((name).wait)    \
 }
 
-#define __MUTEX_INITIALIZER(name)       __SEMAPHORE_INITIALIZER(name,1)
-
 #define __DECLARE_SEMAPHORE_GENERIC(name,count)                                 \
         struct semaphore name = __SEMAPHORE_INITIALIZER(name, count)
 
diff --git a/include/asm-ia64/sn/arch.h b/include/asm-ia64/sn/arch.h
index ab827d298569..1a3831c04af6 100644
--- a/include/asm-ia64/sn/arch.h
+++ b/include/asm-ia64/sn/arch.h
@@ -18,6 +18,32 @@
 #include <asm/sn/sn_cpuid.h>
 
 /*
+ * This is the maximum number of NUMALINK nodes that can be part of a single
+ * SSI kernel. This number includes C-brick, M-bricks, and TIOs. Nodes in
+ * remote partitions are NOT included in this number.
+ * The number of compact nodes cannot exceed size of a coherency domain.
+ * The purpose of this define is to specify a node count that includes
+ * all C/M/TIO nodes in an SSI system.
+ *
+ * SGI system can currently support up to 256 C/M nodes plus additional TIO nodes.
+ *
+ *      Note: ACPI20 has an architectural limit of 256 nodes. When we upgrade
+ *      to ACPI3.0, this limit will be removed. The notion of "compact nodes"
+ *      should be deleted and TIOs should be included in MAX_NUMNODES.
+ */
+#define MAX_COMPACT_NODES       512
+
+/*
+ * Maximum number of nodes in all partitions and in all coherency domains.
+ * This is the total number of nodes accessible in the numalink fabric. It
+ * includes all C & M bricks, plus all TIOs.
+ *
+ * This value is also the value of the maximum number of NASIDs in the numalink
+ * fabric.
+ */
+#define MAX_NUMALINK_NODES      16384
+
+/*
  * The following defines attributes of the HUB chip. These attributes are
  * frequently referenced. They are kept in the per-cpu data areas of each cpu.
  * They are kept together in a struct to minimize cache misses.
@@ -41,15 +67,6 @@ DECLARE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
 
 
 /*
- * This is the maximum number of nodes that can be part of a kernel.
- * Effectively, it's the maximum number of compact node ids (cnodeid_t).
- * This is not necessarily the same as MAX_NASIDS.
- */
-#define MAX_COMPACT_NODES       2048
-#define CPUS_PER_NODE           4
-
-
-/*
  * Compact node ID to nasid mappings kept in the per-cpu data areas of each
  * cpu.
  */
@@ -57,7 +74,6 @@ DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
 #define sn_cnodeid_to_nasid     (&__get_cpu_var(__sn_cnodeid_to_nasid[0]))
 
 
-
 extern u8 sn_partition_id;
 extern u8 sn_system_size;
 extern u8 sn_sharing_domain_size;
diff --git a/include/asm-ia64/sn/io.h b/include/asm-ia64/sn/io.h
index 42209733f6b1..41c73a735628 100644
--- a/include/asm-ia64/sn/io.h
+++ b/include/asm-ia64/sn/io.h
@@ -14,7 +14,7 @@
 extern void * sn_io_addr(unsigned long port) __attribute_const__; /* Forward definition */
 extern void __sn_mmiowb(void); /* Forward definition */
 
-extern int numionodes;
+extern int num_cnodes;
 
 #define __sn_mf_a()   ia64_mfa()
 
@@ -36,6 +36,15 @@ extern void sn_dma_flush(unsigned long);
 #define __sn_readq_relaxed ___sn_readq_relaxed
 
 /*
+ * Convenience macros for setting/clearing bits using the above accessors
+ */
+
+#define __sn_setq_relaxed(addr, val) \
+        writeq((__sn_readq_relaxed(addr) | (val)), (addr))
+#define __sn_clrq_relaxed(addr, val) \
+        writeq((__sn_readq_relaxed(addr) & ~(val)), (addr))
+
+/*
  * The following routines are SN Platform specific, called when
  * a reference is made to inX/outX set macros.  SN Platform
  * inX set of macros ensures that Posted DMA writes on the
diff --git a/include/asm-ia64/sn/klconfig.h b/include/asm-ia64/sn/klconfig.h
index 9f920c70a62a..bcbf209d63be 100644
--- a/include/asm-ia64/sn/klconfig.h
+++ b/include/asm-ia64/sn/klconfig.h
@@ -208,19 +208,6 @@ typedef struct lboard_s {
         klconf_off_t    brd_next_same;    /* Next BOARD with same nasid */
 } lboard_t;
 
-#define KLCF_NUM_COMPS(_brd)    ((_brd)->brd_numcompts)
-#define NODE_OFFSET_TO_KLINFO(n,off)    ((klinfo_t*) TO_NODE_CAC(n,off))
-#define KLCF_NEXT(_brd)         \
-        ((_brd)->brd_next_same ?     \
-         (NODE_OFFSET_TO_LBOARD((_brd)->brd_next_same_host, (_brd)->brd_next_same)): NULL)
-#define KLCF_NEXT_ANY(_brd)         \
-        ((_brd)->brd_next_any ?     \
-         (NODE_OFFSET_TO_LBOARD(NASID_GET(_brd), (_brd)->brd_next_any)): NULL)
-#define KLCF_COMP(_brd, _ndx)   \
-                ((((_brd)->brd_compts[(_ndx)]) == 0) ? 0 : \
-                        (NODE_OFFSET_TO_KLINFO(NASID_GET(_brd), (_brd)->brd_compts[(_ndx)])))
-
-
 /*
  * Generic info structure. This stores common info about a 
  * component.
@@ -249,24 +236,11 @@ typedef struct klinfo_s {                  /* Generic info */
 } klinfo_t ;
 
 
-static inline lboard_t *find_lboard_any(lboard_t * start, unsigned char brd_type)
+static inline lboard_t *find_lboard_next(lboard_t * brd)
 {
-        /* Search all boards stored on this node. */
-
-        while (start) {
-                if (start->brd_type == brd_type)
-                        return start;
-                start = KLCF_NEXT_ANY(start);
-        }
-        /* Didn't find it. */
-        return (lboard_t *) NULL;
+        if (brd && brd->brd_next_any)
+                return NODE_OFFSET_TO_LBOARD(NASID_GET(brd), brd->brd_next_any);
+        return NULL;
 }
 
-
-/* external declarations of Linux kernel functions. */
-
-extern lboard_t *root_lboard[];
-extern klinfo_t *find_component(lboard_t *brd, klinfo_t *kli, unsigned char type);
-extern klinfo_t *find_first_component(lboard_t *brd, unsigned char type);
-
 #endif /* _ASM_IA64_SN_KLCONFIG_H */
diff --git a/include/asm-ia64/sn/l1.h b/include/asm-ia64/sn/l1.h
index 2e5f0aa38889..e3b819110d47 100644
--- a/include/asm-ia64/sn/l1.h
+++ b/include/asm-ia64/sn/l1.h
@@ -35,4 +35,16 @@
 #define L1_BRICKTYPE_ATHENA     0x2b            /* + */
 #define L1_BRICKTYPE_DAYTONA    0x7a            /* z */
 
+/* board type response codes */
+#define L1_BOARDTYPE_IP69       0x0100          /* CA */
+#define L1_BOARDTYPE_IP63       0x0200          /* CB */
+#define L1_BOARDTYPE_BASEIO     0x0300          /* IB */
+#define L1_BOARDTYPE_PCIE2SLOT  0x0400          /* IC */
+#define L1_BOARDTYPE_PCIX3SLOT  0x0500          /* ID */
+#define L1_BOARDTYPE_PCIXPCIE4SLOT 0x0600       /* IE */
+#define L1_BOARDTYPE_ABACUS     0x0700          /* AB */
+#define L1_BOARDTYPE_DAYTONA    0x0800          /* AD */
+#define L1_BOARDTYPE_INVAL      (-1)            /* invalid brick type */
+
+
 #endif /* _ASM_IA64_SN_L1_H */
diff --git a/include/asm-ia64/sn/nodepda.h b/include/asm-ia64/sn/nodepda.h
index 47bb8100fd00..6f6d69e39ff5 100644
--- a/include/asm-ia64/sn/nodepda.h
+++ b/include/asm-ia64/sn/nodepda.h
@@ -55,7 +55,6 @@ struct nodepda_s {
          */
         struct phys_cpuid       phys_cpuid[NR_CPUS];
         spinlock_t              ptc_lock ____cacheline_aligned_in_smp;
-        spinlock_t              bist_lock;
 };
 
 typedef struct nodepda_s nodepda_t;
diff --git a/include/asm-ia64/sn/sn_cpuid.h b/include/asm-ia64/sn/sn_cpuid.h
index d2c1d34dcce4..749deb2ca6c1 100644
--- a/include/asm-ia64/sn/sn_cpuid.h
+++ b/include/asm-ia64/sn/sn_cpuid.h
@@ -105,7 +105,6 @@ extern short physical_node_map[];	/* indexed by nasid to get cnode */
 #define cpuid_to_nasid(cpuid)           (sn_nodepda->phys_cpuid[cpuid].nasid)
 #define cpuid_to_subnode(cpuid)         (sn_nodepda->phys_cpuid[cpuid].subnode)
 #define cpuid_to_slice(cpuid)           (sn_nodepda->phys_cpuid[cpuid].slice)
-#define cpuid_to_cnodeid(cpuid)         (physical_node_map[cpuid_to_nasid(cpuid)])
 
 
 /*
@@ -113,8 +112,6 @@ extern short physical_node_map[];	/* indexed by nasid to get cnode */
  * of potentially large tables.
  */
 extern int nasid_slice_to_cpuid(int, int);
-#define nasid_slice_to_cpu_physical_id(nasid, slice)                    \
-        cpu_physical_id(nasid_slice_to_cpuid(nasid, slice))
 
 /*
  * cnodeid_to_nasid - convert a cnodeid to a NASID
diff --git a/include/asm-ia64/sn/sn_sal.h b/include/asm-ia64/sn/sn_sal.h
index fea35b33d4e4..3f7564dc0aa9 100644
--- a/include/asm-ia64/sn/sn_sal.h
+++ b/include/asm-ia64/sn/sn_sal.h
@@ -47,6 +47,7 @@
 #define  SN_SAL_CONSOLE_PUTB                       0x02000028
 #define  SN_SAL_CONSOLE_XMIT_CHARS                 0x0200002a
 #define  SN_SAL_CONSOLE_READC                      0x0200002b
+#define  SN_SAL_SYSCTL_OP                          0x02000030
 #define  SN_SAL_SYSCTL_MODID_GET                   0x02000031
 #define  SN_SAL_SYSCTL_GET                         0x02000032
 #define  SN_SAL_SYSCTL_IOBRICK_MODULE_GET          0x02000033
@@ -67,7 +68,7 @@
 #define  SN_SAL_IOIF_INTERRUPT                     0x0200004a
 #define  SN_SAL_HWPERF_OP                          0x02000050   // lock
 #define  SN_SAL_IOIF_ERROR_INTERRUPT               0x02000051
-
+#define  SN_SAL_IOIF_PCI_SAFE                      0x02000052
 #define  SN_SAL_IOIF_SLOT_ENABLE                   0x02000053
 #define  SN_SAL_IOIF_SLOT_DISABLE                  0x02000054
 #define  SN_SAL_IOIF_GET_HUBDEV_INFO               0x02000055
@@ -101,6 +102,13 @@
 #define SAL_INTR_FREE           2
 
 /*
+ * operations available on the generic SN_SAL_SYSCTL_OP
+ * runtime service
+ */
+#define SAL_SYSCTL_OP_IOBOARD           0x0001  /*  retrieve board type */
+#define SAL_SYSCTL_OP_TIO_JLCK_RST      0x0002  /* issue TIO clock reset */
+
+/*
  * IRouter (i.e. generalized system controller) operations
  */
 #define SAL_IROUTER_OPEN        0       /* open a subchannel */
@@ -198,26 +206,16 @@ ia64_sn_get_master_baseio_nasid(void)
         return ret_stuff.v0;
 }
 
-static inline char *
+static inline void *
 ia64_sn_get_klconfig_addr(nasid_t nasid)
 {
         struct ia64_sal_retval ret_stuff;
-        int cnodeid;
 
-        cnodeid = nasid_to_cnodeid(nasid);
         ret_stuff.status = 0;
         ret_stuff.v0 = 0;
         ret_stuff.v1 = 0;
         ret_stuff.v2 = 0;
         SAL_CALL(ret_stuff, SN_SAL_GET_KLCONFIG_ADDR, (u64)nasid, 0, 0, 0, 0, 0, 0);
-
-        /*
-         * We should panic if a valid cnode nasid does not produce
-         * a klconfig address.
-         */
-        if (ret_stuff.status != 0) {
-                panic("ia64_sn_get_klconfig_addr: Returned error %lx\n", ret_stuff.status);
-        }
         return ret_stuff.v0 ? __va(ret_stuff.v0) : NULL;
 }
 
@@ -694,12 +692,10 @@ sn_change_memprotect(u64 paddr, u64 len, u64 perms, u64 *nasid_array)
         unsigned long irq_flags;
 
         cnodeid = nasid_to_cnodeid(get_node_number(paddr));
-        // spin_lock(&NODEPDA(cnodeid)->bist_lock);
         local_irq_save(irq_flags);
         ia64_sal_oemcall_nolock(&ret_stuff, SN_SAL_MEMPROTECT, paddr, len,
                                 (u64)nasid_array, perms, 0, 0, 0);
         local_irq_restore(irq_flags);
-        // spin_unlock(&NODEPDA(cnodeid)->bist_lock);
         return ret_stuff.status;
 }
 #define SN_MEMPROT_ACCESS_CLASS_0               0x14a080
@@ -873,6 +869,41 @@ ia64_sn_sysctl_event_init(nasid_t nasid)
         return (int) rv.v0;
 }
 
+/*
+ * Ask the system controller on the specified nasid to reset
+ * the CX corelet clock.  Only valid on TIO nodes.
+ */
+static inline int
+ia64_sn_sysctl_tio_clock_reset(nasid_t nasid)
+{
+        struct ia64_sal_retval rv;
+        SAL_CALL_REENTRANT(rv, SN_SAL_SYSCTL_OP, SAL_SYSCTL_OP_TIO_JLCK_RST,
+                        nasid, 0, 0, 0, 0, 0);
+        if (rv.status != 0)
+                return (int)rv.status;
+        if (rv.v0 != 0)
+                return (int)rv.v0;
+
+        return 0;
+}
+
+/*
+ * Get the associated ioboard type for a given nasid.
+ */
+static inline int
+ia64_sn_sysctl_ioboard_get(nasid_t nasid)
+{
+        struct ia64_sal_retval rv;
+        SAL_CALL_REENTRANT(rv, SN_SAL_SYSCTL_OP, SAL_SYSCTL_OP_IOBOARD,
+                        nasid, 0, 0, 0, 0, 0);
+        if (rv.v0 != 0)
+                return (int)rv.v0;
+        if (rv.v1 != 0)
+                return (int)rv.v1;
+
+        return 0;
+}
+
 /**
  * ia64_sn_get_fit_compt - read a FIT entry from the PROM header
  * @nasid: NASID of node to read
diff --git a/include/asm-ia64/sn/tioca_provider.h b/include/asm-ia64/sn/tioca_provider.h
index 5ccec608d325..b532ef6148ed 100644
--- a/include/asm-ia64/sn/tioca_provider.h
+++ b/include/asm-ia64/sn/tioca_provider.h
@@ -182,11 +182,11 @@ tioca_tlbflush(struct tioca_kernel *tioca_kernel)
                          * touch every CL aligned GART entry.
                          */
 
-                        ca_base->ca_control2 &= ~(CA_GART_MEM_PARAM);
-                        ca_base->ca_control2 |= CA_GART_FLUSH_TLB;
-                        ca_base->ca_control2 |=
-                            (0x2ull << CA_GART_MEM_PARAM_SHFT);
-                        tmp = ca_base->ca_control2;
+                        __sn_clrq_relaxed(&ca_base->ca_control2, CA_GART_MEM_PARAM);
+                        __sn_setq_relaxed(&ca_base->ca_control2, CA_GART_FLUSH_TLB);
+                        __sn_setq_relaxed(&ca_base->ca_control2,
+                            (0x2ull << CA_GART_MEM_PARAM_SHFT));
+                        tmp = __sn_readq_relaxed(&ca_base->ca_control2);
                 }
 
                 return;
@@ -196,8 +196,8 @@ tioca_tlbflush(struct tioca_kernel *tioca_kernel)
          * Gart in uncached mode ... need an explicit flush.
          */
 
-        ca_base->ca_control2 |= CA_GART_FLUSH_TLB;
-        tmp = ca_base->ca_control2;
+        __sn_setq_relaxed(&ca_base->ca_control2, CA_GART_FLUSH_TLB);
+        tmp = __sn_readq_relaxed(&ca_base->ca_control2);
 }
 
 extern uint32_t tioca_gart_found;
diff --git a/include/asm-ia64/sn/tiocx.h b/include/asm-ia64/sn/tiocx.h
index c5447a504509..5699e75e5024 100644
--- a/include/asm-ia64/sn/tiocx.h
+++ b/include/asm-ia64/sn/tiocx.h
@@ -19,6 +19,7 @@ struct cx_id_s {
 
 struct cx_dev {
         struct cx_id_s cx_id;
+        int bt;                         /* board/blade type */
         void *soft;                     /* driver specific */
         struct hubdev_info *hubdev;
         struct device dev;
@@ -59,7 +60,7 @@ struct cx_drv {
 extern struct sn_irq_info *tiocx_irq_alloc(nasid_t, int, int, nasid_t, int);
 extern void tiocx_irq_free(struct sn_irq_info *);
 extern int cx_device_unregister(struct cx_dev *);
-extern int cx_device_register(nasid_t, int, int, struct hubdev_info *);
+extern int cx_device_register(nasid_t, int, int, struct hubdev_info *, int);
 extern int cx_driver_unregister(struct cx_drv *);
 extern int cx_driver_register(struct cx_drv *);
 extern uint64_t tiocx_dma_addr(uint64_t addr);
diff --git a/include/asm-ia64/sn/xp.h b/include/asm-ia64/sn/xp.h
index 1df1c9f61a65..49faf8f26430 100644
--- a/include/asm-ia64/sn/xp.h
+++ b/include/asm-ia64/sn/xp.h
@@ -49,7 +49,7 @@
  * C-brick nasids, thus the need for bitmaps which don't account for
  * odd-numbered (non C-brick) nasids.
  */
-#define XP_MAX_PHYSNODE_ID      (MAX_PHYSNODE_ID / 2)
+#define XP_MAX_PHYSNODE_ID      (MAX_NUMALINK_NODES / 2)
 #define XP_NASID_MASK_BYTES     ((XP_MAX_PHYSNODE_ID + 7) / 8)
 #define XP_NASID_MASK_WORDS     ((XP_MAX_PHYSNODE_ID + 63) / 64)
 
@@ -217,7 +217,17 @@ enum xpc_retval {
         xpcInvalidPartid,       /* 42: invalid partition ID */
         xpcLocalPartid,         /* 43: local partition ID */
 
-        xpcUnknownReason        /* 44: unknown reason -- must be last in list */
+        xpcOtherGoingDown,      /* 44: other side going down, reason unknown */
+        xpcSystemGoingDown,     /* 45: system is going down, reason unknown */
+        xpcSystemHalt,          /* 46: system is being halted */
+        xpcSystemReboot,        /* 47: system is being rebooted */
+        xpcSystemPoweroff,      /* 48: system is being powered off */
+
+        xpcDisconnecting,       /* 49: channel disconnecting (closing) */
+
+        xpcOpenCloseError,      /* 50: channel open/close protocol error */
+
+        xpcUnknownReason        /* 51: unknown reason -- must be last in list */
 };
 
 
@@ -342,7 +352,7 @@ typedef void (*xpc_notify_func)(enum xpc_retval reason, partid_t partid,
  *
  * The 'func' field points to the function to call when aynchronous
  * notification is required for such events as: a connection established/lost,
- * or an incomming message received, or an error condition encountered. A
+ * or an incoming message received, or an error condition encountered. A
  * non-NULL 'func' field indicates that there is an active registration for
  * the channel.
  */
diff --git a/include/asm-ia64/sparsemem.h b/include/asm-ia64/sparsemem.h
new file mode 100644
index 000000000000..67a7c40ec27f
--- /dev/null
+++ b/include/asm-ia64/sparsemem.h
@@ -0,0 +1,20 @@
+#ifndef _ASM_IA64_SPARSEMEM_H
+#define _ASM_IA64_SPARSEMEM_H
+
+#ifdef CONFIG_SPARSEMEM
+/*
+ * SECTION_SIZE_BITS            2^N: how big each section will be
+ * MAX_PHYSMEM_BITS             2^N: how much memory we can have in that space
+ */
+
+#define SECTION_SIZE_BITS       (30)
+#define MAX_PHYSMEM_BITS        (50)
+#ifdef CONFIG_FORCE_MAX_ZONEORDER
+#if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
+#undef SECTION_SIZE_BITS
+#define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT)
+#endif
+#endif
+
+#endif /* CONFIG_SPARSEMEM */
+#endif /* _ASM_IA64_SPARSEMEM_H */
diff --git a/include/asm-ia64/tlb.h b/include/asm-ia64/tlb.h
index 3a9a6d1be75c..834370b9dea1 100644
--- a/include/asm-ia64/tlb.h
+++ b/include/asm-ia64/tlb.h
@@ -60,7 +60,6 @@ struct mmu_gather {
         unsigned int            nr;             /* == ~0U => fast mode */
         unsigned char           fullmm;         /* non-zero means full mm flush */
         unsigned char           need_flush;     /* really unmapped some PTEs? */
-        unsigned long           freed;          /* number of pages freed */
         unsigned long           start_addr;
         unsigned long           end_addr;
         struct page             *pages[FREE_PTE_NR];
@@ -129,7 +128,7 @@ ia64_tlb_flush_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long e
 static inline struct mmu_gather *
 tlb_gather_mmu (struct mm_struct *mm, unsigned int full_mm_flush)
 {
-        struct mmu_gather *tlb = &__get_cpu_var(mmu_gathers);
+        struct mmu_gather *tlb = &get_cpu_var(mmu_gathers);
 
         tlb->mm = mm;
         /*
@@ -147,25 +146,17 @@ tlb_gather_mmu (struct mm_struct *mm, unsigned int full_mm_flush)
          */
         tlb->nr = (num_online_cpus() == 1) ? ~0U : 0;
         tlb->fullmm = full_mm_flush;
-        tlb->freed = 0;
         tlb->start_addr = ~0UL;
         return tlb;
 }
 
 /*
  * Called at the end of the shootdown operation to free up any resources that were
- * collected.  The page table lock is still held at this point.
+ * collected.
  */
 static inline void
 tlb_finish_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long end)
 {
-        unsigned long freed = tlb->freed;
-        struct mm_struct *mm = tlb->mm;
-        unsigned long rss = get_mm_counter(mm, rss);
-
-        if (rss < freed)
-                freed = rss;
-        add_mm_counter(mm, rss, -freed);
         /*
          * Note: tlb->nr may be 0 at this point, so we can't rely on tlb->start_addr and
          * tlb->end_addr.
@@ -174,12 +165,8 @@ tlb_finish_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long end)
 
         /* keep the page table cache within bounds */
         check_pgt_cache();
-}
 
-static inline unsigned int
-tlb_is_full_mm(struct mmu_gather *tlb)
-{
-     return tlb->fullmm;
+        put_cpu_var(mmu_gathers);
 }
 
 /*
diff --git a/include/asm-ia64/unistd.h b/include/asm-ia64/unistd.h
index 3a0c69524656..6d96a67439be 100644
--- a/include/asm-ia64/unistd.h
+++ b/include/asm-ia64/unistd.h
@@ -383,8 +383,6 @@ struct sigaction;
 long sys_execve(char __user *filename, char __user * __user *argv,
                            char __user * __user *envp, struct pt_regs *regs);
 asmlinkage long sys_pipe(void);
-asmlinkage long sys_ptrace(long request, pid_t pid,
-                           unsigned long addr, unsigned long data);
 asmlinkage long sys_rt_sigaction(int sig,
                                  const struct sigaction __user *act,
                                  struct sigaction __user *oact,