patch-2.3.48 linux/include/asm-mips64/mmzone.h

• Lines: 83
• Date: Thu Feb 24 22:53:35 2000
• Orig file: v2.3.47/linux/include/asm-mips64/mmzone.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.47/linux/include/asm-mips64/mmzone.h linux/include/asm-mips64/mmzone.h
@@ -0,0 +1,82 @@
+/*
+ * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
+ */
+#ifndef _ASM_MMZONE_H_
+#define _ASM_MMZONE_H_
+
+#include <asm/sn/types.h>
+#include <asm/sn/addrs.h>
+#include <asm/sn/arch.h>
+
+typedef struct plat_pglist_data {
+	pg_data_t	gendata;
+	unsigned long	physstart;
+	unsigned long	size;
+	unsigned long	start_mapnr;
+} plat_pg_data_t;
+
+/*
+ * Following are macros that are specific to this numa platform.
+ */
+
+extern int numa_debug(void);
+extern plat_pg_data_t *plat_node_data[];
+
+#define PHYSADDR_TO_NID(pa)		NASID_TO_COMPACT_NODEID(NASID_GET(pa))
+#define PLAT_NODE_DATA(n)		(plat_node_data[n])
+#define PLAT_NODE_DATA_STARTNR(n)	(PLAT_NODE_DATA(n)->start_mapnr)
+#define PLAT_NODE_DATA_LOCALNR(p, n) \
+			(((p) - PLAT_NODE_DATA(n)->physstart) >> PAGE_SHIFT)
+#define PAGE_TO_PLAT_NODE(p)		(plat_pg_data_t *)((p)->zone->zone_pgdat)
+
+#ifdef CONFIG_DISCONTIGMEM
+
+/*
+ * Following are macros that each numa implmentation must define.
+ */
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ * For production kern_addr_valid, change to return "numnodes" instead
+ * of panicing.
+ */
+#define KVADDR_TO_NID(kaddr) \
+	((NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr))) != -1) ? \
+	(NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr)))) : \
+	(printk("NUMABUG: %s line %d addr 0x%lx", __FILE__, __LINE__, kaddr), \
+	numa_debug(), -1))
+
+/*
+ * Return a pointer to the node data for node n.
+ */
+#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)
+
+/*
+ * Given a mem_map_t, LOCAL_MAP_BASE finds the owning node for the
+ * physical page and returns the kaddr for the mem_map of that node.
+ */
+#define LOCAL_MAP_BASE(page) \
+			NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(page)))
+
+/*
+ * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
+ * and returns the 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)	((unsigned long)(kaddr) & ~(NODE_MAX_MEM_SIZE-1))
+
+#endif /* CONFIG_DISCONTIGMEM */
+
+#endif /* _ASM_MMZONE_H_ */