1 files changed, 112 insertions, 0 deletions
diff --git a/include/asm-ia64/sn/mmzone.h b/include/asm-ia64/sn/mmzone.h
new file mode 100644
index 000000000..e44f16f14
--- /dev/null
+++ b/include/asm-ia64/sn/mmzone.h
@@ -0,0 +1,112 @@
+/*
+ * Written by Kanoj Sarcar (kanoj@sgi.com) Jan 2000
+ * Copyright, 2000, Silicon Graphics, sprasad@engr.sgi.com
+ */
+#ifndef _LINUX_ASM_SN_MMZONE_H
+#define _LINUX_ASM_SN_MMZONE_H
+
+#include <linux/config.h>
+#include <asm/sn/mmzone_sn1.h>
+#include <asm/sn/sn_cpuid.h>
+
+/*
+ * Memory is conceptually divided into chunks. A chunk is either
+ * completely present, or else the kernel assumes it is completely
+ * absent. Each node consists of a number of contiguous chunks.
+ */
+
+#define CHUNKMASK       	(~(CHUNKSZ - 1))
+#define CHUNKNUM(vaddr)        	(__pa(vaddr) >> CHUNKSHIFT)
+#define PCHUNKNUM(paddr)        ((paddr) >> CHUNKSHIFT)
+
+#define MAXCHUNKS      		(MAXNODES * MAX_CHUNKS_PER_NODE)
+
+extern int chunktonid[];
+#define CHUNKTONID(cnum)       (chunktonid[cnum])
+
+typedef struct plat_pglist_data {
+       pg_data_t       gendata;		/* try to keep this first. */
+       unsigned long   virtstart;
+       unsigned long   size;
+} plat_pg_data_t;
+
+extern plat_pg_data_t plat_node_data[];
+
+extern int numa_debug(void);
+
+/*
+ * The foll two will move into linux/mmzone.h RSN.
+ */
+#define NODE_START(n)  plat_node_data[(n)].virtstart
+#define NODE_SIZE(n)   plat_node_data[(n)].size
+
+#define KVADDR_TO_NID(kaddr) \
+       ((CHUNKTONID(CHUNKNUM((kaddr))) != -1) ? (CHUNKTONID(CHUNKNUM((kaddr)))) : \
+       (printk("DISCONTIGBUG: %s line %d addr 0x%lx", __FILE__, __LINE__, \
+       (unsigned long)(kaddr)), numa_debug()))
+#if 0
+#define KVADDR_TO_NID(kaddr) CHUNKTONID(CHUNKNUM((kaddr)))
+#endif
+
+/* These 2 macros should never be used if KVADDR_TO_NID(kaddr) is -1 */
+/*
+ * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
+ * and returns the mem_map of that node.
+ */
+#define ADDR_TO_MAPBASE(kaddr) \
+                       NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
+
+/*
+ * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
+ * and returns the kaddr corresponding to first physical page in the
+ * node's mem_map.
+ */
+#define LOCAL_BASE_ADDR(kaddr) NODE_START(KVADDR_TO_NID(kaddr))
+
+#ifdef CONFIG_DISCONTIGMEM
+
+/*
+ * Return a pointer to the node data for node n.
+ * Assume that n is the compact node id.
+ */
+#define NODE_DATA(n)   (&((plat_node_data + (n))->gendata))
+
+/*
+ * NODE_MEM_MAP gives the kaddr for the mem_map of the node.
+ */
+#define NODE_MEM_MAP(nid)      (NODE_DATA((nid))->node_mem_map)
+
+/* This macro should never be used if KVADDR_TO_NID(kaddr) is -1 */
+#define LOCAL_MAP_NR(kvaddr) \
+        (((unsigned long)(kvaddr)-LOCAL_BASE_ADDR((kvaddr))) >> PAGE_SHIFT)
+#define MAP_NR_SN1(kaddr)   (LOCAL_MAP_NR((kaddr)) + \
+                (((unsigned long)ADDR_TO_MAPBASE((kaddr)) - PAGE_OFFSET) / \
+                sizeof(mem_map_t)))
+#if 0
+#define MAP_NR_VALID(kaddr)   (LOCAL_MAP_NR((kaddr)) + \
+                (((unsigned long)ADDR_TO_MAPBASE((kaddr)) - PAGE_OFFSET) / \
+                sizeof(mem_map_t)))
+#define MAP_NR_SN1(kaddr)	((KVADDR_TO_NID(kaddr) == -1) ? (max_mapnr + 1) :\
+				MAP_NR_VALID(kaddr))
+#endif
+
+/* FIXME */
+#define sn1_pte_pagenr(x)		MAP_NR_SN1(PAGE_OFFSET + (unsigned long)((pte_val(x)&_PFN_MASK) & PAGE_MASK))
+#define pte_page(pte)			(mem_map + sn1_pte_pagenr(pte))
+/* FIXME */
+
+#define kern_addr_valid(addr)   ((KVADDR_TO_NID((unsigned long)addr) >= \
+        numnodes) ? 0 : (test_bit(LOCAL_MAP_NR((addr)), \
+        NODE_DATA(KVADDR_TO_NID((unsigned long)addr))->valid_addr_bitmap)))
+
+#define virt_to_page(kaddr)	(mem_map + MAP_NR_SN1(kaddr))
+
+#else /* CONFIG_DISCONTIGMEM */
+
+#define MAP_NR_SN1(addr)	(((unsigned long) (addr) - PAGE_OFFSET) >> PAGE_SHIFT)
+
+#endif /* CONFIG_DISCONTIGMEM */
+
+#define numa_node_id()		cpuid_to_cnodeid(smp_processor_id())
+
+#endif /* !_LINUX_ASM_SN_MMZONE_H */