patch-2.4.5 linux/include/asm-alpha/mmzone.h

• Lines: 128
• Date: Thu May 24 15:20:18 2001
• Orig file: v2.4.4/linux/include/asm-alpha/mmzone.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.4/linux/include/asm-alpha/mmzone.h linux/include/asm-alpha/mmzone.h
@@ -0,0 +1,127 @@
+/*
+ * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
+ * Adapted for the alpha wildfire architecture Jan 2001.
+ */
+#ifndef _ASM_MMZONE_H_
+#define _ASM_MMZONE_H_
+
+#include <linux/config.h>
+#ifdef CONFIG_NUMA_SCHED
+#include <linux/numa_sched.h>
+#endif
+#ifdef NOTYET
+#include <asm/sn/types.h>
+#include <asm/sn/addrs.h>
+#include <asm/sn/arch.h>
+#include <asm/sn/klkernvars.h>
+#endif /* NOTYET */
+
+typedef struct plat_pglist_data {
+	pg_data_t	gendata;
+#ifdef NOTYET
+	kern_vars_t	kern_vars;
+#endif
+#if defined(CONFIG_NUMA) && defined(CONFIG_NUMA_SCHED)
+	struct numa_schedule_data schedule_data;
+#endif
+} plat_pg_data_t;
+
+struct bootmem_data_t; /* stupid forward decl. */
+
+/*
+ * Following are macros that are specific to this numa platform.
+ */
+
+extern plat_pg_data_t *plat_node_data[];
+
+#ifdef CONFIG_ALPHA_WILDFIRE
+# define ALPHA_PA_TO_NID(pa)	((pa) >> 36)	/* 16 nodes max due 43bit kseg */
+#define NODE_MAX_MEM_SIZE	(64L * 1024L * 1024L * 1024L) /* 64 GB */
+#define MAX_NUMNODES		WILDFIRE_MAX_QBB
+#else
+# define ALPHA_PA_TO_NID(pa)	(0)
+#define NODE_MAX_MEM_SIZE	(~0UL)
+#define MAX_NUMNODES		1
+#endif
+
+#define PHYSADDR_TO_NID(pa)		ALPHA_PA_TO_NID(pa)
+#define PLAT_NODE_DATA(n)		(plat_node_data[(n)])
+#define PLAT_NODE_DATA_STARTNR(n)	\
+	(PLAT_NODE_DATA(n)->gendata.node_start_mapnr)
+#define PLAT_NODE_DATA_SIZE(n)		(PLAT_NODE_DATA(n)->gendata.node_size)
+
+#if 1
+#define PLAT_NODE_DATA_LOCALNR(p, n)	\
+	(((p) - PLAT_NODE_DATA(n)->gendata.node_start_paddr) >> PAGE_SHIFT)
+#else
+static inline unsigned long
+PLAT_NODE_DATA_LOCALNR(unsigned long p, int n)
+{
+	unsigned long temp;
+	temp = p - PLAT_NODE_DATA(n)->gendata.node_start_paddr;
+	return (temp >> PAGE_SHIFT);
+}
+#endif
+
+#ifdef CONFIG_DISCONTIGMEM
+
+/*
+ * Following are macros that each numa implmentation must define.
+ */
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+#define KVADDR_TO_NID(kaddr)	PHYSADDR_TO_NID(__pa(kaddr))
+
+/*
+ * 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 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)__va(NODE_DATA(KVADDR_TO_NID(kaddr))->node_start_paddr))
+
+#define LOCAL_MAP_NR(kvaddr) \
+	(((unsigned long)(kvaddr)-LOCAL_BASE_ADDR(kvaddr)) >> PAGE_SHIFT)
+
+#define kern_addr_valid(kaddr)	test_bit(LOCAL_MAP_NR(kaddr), \
+					 NODE_DATA(KVADDR_TO_NID(kaddr))->valid_addr_bitmap)
+
+#define virt_to_page(kaddr)	(ADDR_TO_MAPBASE(kaddr) + LOCAL_MAP_NR(kaddr))
+#define VALID_PAGE(page)	(((page) - mem_map) < max_mapnr)
+
+#ifdef CONFIG_NUMA
+#ifdef CONFIG_NUMA_SCHED
+#define NODE_SCHEDULE_DATA(nid)	(&((PLAT_NODE_DATA(nid))->schedule_data))
+#endif
+
+#ifdef CONFIG_ALPHA_WILDFIRE
+/* With wildfire assume 4 CPUs per node */
+#define cputonode(cpu)	((cpu) >> 2)
+#else
+#define cputonode(cpu)	0
+#endif /* CONFIG_ALPHA_WILDFIRE */
+
+#define numa_node_id()	cputonode(smp_processor_id())
+#endif /* CONFIG_NUMA */
+
+#endif /* CONFIG_DISCONTIGMEM */
+
+#endif /* _ASM_MMZONE_H_ */