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 000000000000..8af56ce346ad
--- /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_ */