1 files changed, 115 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/mmzone.h b/arch/alpha/include/asm/mmzone.h
new file mode 100644
index 00000000000..8af56ce346a
--- /dev/null
+++ b/arch/alpha/include/asm/mmzone.h
@@ -0,0 +1,115 @@
+/*
+ * 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 <asm/smp.h>
+
+struct bootmem_data_t; /* stupid forward decl. */
+
+/*
+ * Following are macros that are specific to this numa platform.
+ */
+
+extern pg_data_t node_data[];
+
+#define alpha_pa_to_nid(pa)		\
+        (alpha_mv.pa_to_nid 		\
+	 ? alpha_mv.pa_to_nid(pa)	\
+	 : (0))
+#define node_mem_start(nid)		\
+        (alpha_mv.node_mem_start 	\
+	 ? alpha_mv.node_mem_start(nid) \
+	 : (0UL))
+#define node_mem_size(nid)		\
+        (alpha_mv.node_mem_size 	\
+	 ? alpha_mv.node_mem_size(nid) 	\
+	 : ((nid) ? (0UL) : (~0UL)))
+
+#define pa_to_nid(pa)		alpha_pa_to_nid(pa)
+#define NODE_DATA(nid)		(&node_data[(nid)])
+
+#define node_localnr(pfn, nid)	((pfn) - NODE_DATA(nid)->node_start_pfn)
+
+#if 1
+#define PLAT_NODE_DATA_LOCALNR(p, n)	\
+	(((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn)
+#else
+static inline unsigned long
+PLAT_NODE_DATA_LOCALNR(unsigned long p, int n)
+{
+	unsigned long temp;
+	temp = p >> PAGE_SHIFT;
+	return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn;
+}
+#endif
+
+#ifdef CONFIG_DISCONTIGMEM
+
+/*
+ * Following are macros that each numa implementation must define.
+ */
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+#define kvaddr_to_nid(kaddr)	pa_to_nid(__pa(kaddr))
+#define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn)
+
+/*
+ * 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_pfn  \
+			 << PAGE_SHIFT))
+
+/* XXX: FIXME -- wli */
+#define kern_addr_valid(kaddr)	(0)
+
+#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+
+#define VALID_PAGE(page)	(((page) - mem_map) < max_mapnr)
+
+#define pmd_page(pmd)		(pfn_to_page(pmd_val(pmd) >> 32))
+#define pgd_page(pgd)		(pfn_to_page(pgd_val(pgd) >> 32))
+#define pte_pfn(pte)		(pte_val(pte) >> 32)
+
+#define mk_pte(page, pgprot)						     \
+({								 	     \
+	pte_t pte;                                                           \
+	unsigned long pfn;                                                   \
+									     \
+	pfn = page_to_pfn(page) << 32; \
+	pte_val(pte) = pfn | pgprot_val(pgprot);			     \
+									     \
+	pte;								     \
+})
+
+#define pte_page(x)							\
+({									\
+       	unsigned long kvirt;						\
+	struct page * __xx;						\
+									\
+	kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT));	\
+	__xx = virt_to_page(kvirt);					\
+									\
+	__xx;                                                           \
+})
+
+#define page_to_pa(page)						\
+	(page_to_pfn(page) << PAGE_SHIFT)
+
+#define pfn_to_nid(pfn)		pa_to_nid(((u64)(pfn) << PAGE_SHIFT))
+#define pfn_valid(pfn)							\
+	(((pfn) - node_start_pfn(pfn_to_nid(pfn))) <			\
+	 node_spanned_pages(pfn_to_nid(pfn)))					\
+
+#define virt_addr_valid(kaddr)	pfn_valid((__pa(kaddr) >> PAGE_SHIFT))
+
+#endif /* CONFIG_DISCONTIGMEM */
+
+#endif /* _ASM_MMZONE_H_ */