* linux/include/asm-arm/memory.h
*
* Copyright (C) 2000-2002 Russell King
+ * modification for nommu, Hyok S. Choi, 2004
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#define UL(x) (x)
#endif
-#include <linux/config.h>
#include <linux/compiler.h>
#include <asm/arch/memory.h>
#include <asm/sizes.h>
+#ifdef CONFIG_MMU
+
#ifndef TASK_SIZE
/*
* TASK_SIZE - the maximum size of a user space task.
#define PAGE_OFFSET UL(0xc0000000)
#endif
+/*
+ * The module space lives between the addresses given by TASK_SIZE
+ * and PAGE_OFFSET - it must be within 32MB of the kernel text.
+ */
+#define MODULE_END (PAGE_OFFSET)
+#define MODULE_START (MODULE_END - 16*1048576)
+
+#if TASK_SIZE > MODULE_START
+#error Top of user space clashes with start of module space
+#endif
+
+/*
+ * The XIP kernel gets mapped at the bottom of the module vm area.
+ * Since we use sections to map it, this macro replaces the physical address
+ * with its virtual address while keeping offset from the base section.
+ */
+#define XIP_VIRT_ADDR(physaddr) (MODULE_START + ((physaddr) & 0x000fffff))
+
+/*
+ * Allow 16MB-aligned ioremap pages
+ */
+#define IOREMAP_MAX_ORDER 24
+
+#else /* CONFIG_MMU */
+
+/*
+ * The limitation of user task size can grow up to the end of free ram region.
+ * It is difficult to define and perhaps will never meet the original meaning
+ * of this define that was meant to.
+ * Fortunately, there is no reference for this in noMMU mode, for now.
+ */
+#ifndef TASK_SIZE
+#define TASK_SIZE (CONFIG_DRAM_SIZE)
+#endif
+
+#ifndef TASK_UNMAPPED_BASE
+#define TASK_UNMAPPED_BASE UL(0x00000000)
+#endif
+
+#ifndef PHYS_OFFSET
+#define PHYS_OFFSET (CONFIG_DRAM_BASE)
+#endif
+
+#ifndef END_MEM
+#define END_MEM (CONFIG_DRAM_BASE + CONFIG_DRAM_SIZE)
+#endif
+
+#ifndef PAGE_OFFSET
+#define PAGE_OFFSET (PHYS_OFFSET)
+#endif
+
+/*
+ * The module can be at any place in ram in nommu mode.
+ */
+#define MODULE_END (END_MEM)
+#define MODULE_START (PHYS_OFFSET)
+
+#endif /* !CONFIG_MMU */
+
/*
* Size of DMA-consistent memory region. Must be multiple of 2M,
* between 2MB and 14MB inclusive.
#define __phys_to_pfn(paddr) ((paddr) >> PAGE_SHIFT)
#define __pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT)
-/*
- * The module space lives between the addresses given by TASK_SIZE
- * and PAGE_OFFSET - it must be within 32MB of the kernel text.
- */
-#define MODULE_END (PAGE_OFFSET)
-#define MODULE_START (MODULE_END - 16*1048576)
-
-#if TASK_SIZE > MODULE_START
-#error Top of user space clashes with start of module space
-#endif
-
-/*
- * The XIP kernel gets mapped at the bottom of the module vm area.
- * Since we use sections to map it, this macro replaces the physical address
- * with its virtual address while keeping offset from the base section.
- */
-#define XIP_VIRT_ADDR(physaddr) (MODULE_START + ((physaddr) & 0x000fffff))
-
#ifndef __ASSEMBLY__
/*
*/
#ifndef CONFIG_DISCONTIGMEM
-#define page_to_pfn(page) (((page) - mem_map) + PHYS_PFN_OFFSET)
-#define pfn_to_page(pfn) ((mem_map + (pfn)) - PHYS_PFN_OFFSET)
+#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
#define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
-#define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
+#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
#define PHYS_TO_NID(addr) (0)
*/
#include <linux/numa.h>
-#define page_to_pfn(page) \
- (( (page) - page_zone(page)->zone_mem_map) \
- + page_zone(page)->zone_start_pfn)
-
-#define pfn_to_page(pfn) \
- (PFN_TO_MAPBASE(pfn) + LOCAL_MAP_NR((pfn) << PAGE_SHIFT))
+#define arch_pfn_to_nid(pfn) PFN_TO_NID(pfn)
+#define arch_local_page_offset(pfn, nid) LOCAL_MAP_NR((pfn) << PAGE_SHIFT)
#define pfn_valid(pfn) \
({ \
*/
#define PHYS_TO_NID(addr) PFN_TO_NID((addr) >> PAGE_SHIFT)
+/*
+ * 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(kaddr))
+
+/*
+ * Given a page frame number, find the owning node of the memory
+ * and returns the mem_map of that node.
+ */
+#define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
+
+#ifdef NODE_MEM_SIZE_BITS
+#define NODE_MEM_SIZE_MASK ((1 << NODE_MEM_SIZE_BITS) - 1)
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+#define KVADDR_TO_NID(addr) \
+ (((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MEM_SIZE_BITS)
+
+/*
+ * Given a page frame number, convert it to a node id.
+ */
+#define PFN_TO_NID(pfn) \
+ (((pfn) - PHYS_PFN_OFFSET) >> (NODE_MEM_SIZE_BITS - PAGE_SHIFT))
+
+/*
+ * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
+ * and returns the index corresponding to the appropriate page in the
+ * node's mem_map.
+ */
+#define LOCAL_MAP_NR(addr) \
+ (((unsigned long)(addr) & NODE_MEM_SIZE_MASK) >> PAGE_SHIFT)
+
+#endif /* NODE_MEM_SIZE_BITS */
+
#endif /* !CONFIG_DISCONTIGMEM */
/*
#define virt_to_dma(dev, addr) (__arch_virt_to_dma(dev, addr))
#endif
+/*
+ * Optional coherency support. Currently used only by selected
+ * Intel XSC3-based systems.
+ */
+#ifndef arch_is_coherent
+#define arch_is_coherent() 0
+#endif
+
#endif
+#include <asm-generic/memory_model.h>
+
#endif
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