#ifndef __ASM_ARM_MEMORY_H
#define __ASM_ARM_MEMORY_H
+/*
+ * Allow for constants defined here to be used from assembly code
+ * by prepending the UL suffix only with actual C code compilation.
+ */
+#ifndef __ASSEMBLY__
+#define UL(x) (x##UL)
+#else
+#define UL(x) (x)
+#endif
+
#include <linux/config.h>
+#include <linux/compiler.h>
#include <asm/arch/memory.h>
+#include <asm/sizes.h>
#ifndef TASK_SIZE
/*
* TASK_SIZE - the maximum size of a user space task.
* TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area
*/
-#define TASK_SIZE (0xbf000000UL)
-#define TASK_UNMAPPED_BASE (0x40000000UL)
+#define TASK_SIZE UL(0xbf000000)
+#define TASK_UNMAPPED_BASE UL(0x40000000)
#endif
/*
* The maximum size of a 26-bit user space task.
*/
-#define TASK_SIZE_26 (0x04000000UL)
+#define TASK_SIZE_26 UL(0x04000000)
/*
* Page offset: 3GB
*/
#ifndef PAGE_OFFSET
-#define PAGE_OFFSET (0xc0000000UL)
+#define PAGE_OFFSET UL(0xc0000000)
+#endif
+
+/*
+ * Size of DMA-consistent memory region. Must be multiple of 2M,
+ * between 2MB and 14MB inclusive.
+ */
+#ifndef CONSISTENT_DMA_SIZE
+#define CONSISTENT_DMA_SIZE SZ_2M
#endif
/*
#define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET)
#endif
+/*
+ * Convert a physical address to a Page Frame Number and back
+ */
+#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.
#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__
+/*
+ * The DMA mask corresponding to the maximum bus address allocatable
+ * using GFP_DMA. The default here places no restriction on DMA
+ * allocations. This must be the smallest DMA mask in the system,
+ * so a successful GFP_DMA allocation will always satisfy this.
+ */
+#ifndef ISA_DMA_THRESHOLD
+#define ISA_DMA_THRESHOLD (0xffffffffULL)
+#endif
+
+#ifndef arch_adjust_zones
+#define arch_adjust_zones(node,size,holes) do { } while (0)
+#endif
+
/*
* PFNs are used to describe any physical page; this means
* PFN 0 == physical address 0.
*/
#define __pa(x) __virt_to_phys((unsigned long)(x))
#define __va(x) ((void *)__phys_to_virt((unsigned long)(x)))
+#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
/*
* Virtual <-> DMA view memory address translations
* Again, these are *only* valid on the kernel direct mapped RAM
- * memory. Use of these is *deprecated*.
+ * memory. Use of these is *deprecated* (and that doesn't mean
+ * use the __ prefixed forms instead.) See dma-mapping.h.
*/
-#define virt_to_bus(x) (__virt_to_bus((unsigned long)(x)))
-#define bus_to_virt(x) ((void *)(__bus_to_virt((unsigned long)(x))))
+static inline __deprecated unsigned long virt_to_bus(void *x)
+{
+ return __virt_to_bus((unsigned long)x);
+}
+
+static inline __deprecated void *bus_to_virt(unsigned long x)
+{
+ return (void *)__bus_to_virt(x);
+}
/*
* Conversion between a struct page and a physical address.
* virt_addr_valid(k) indicates whether a virtual address is valid
*/
#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)
* around in memory.
*/
#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 pfn_valid(pfn) (PFN_TO_NID(pfn) < MAX_NUMNODES)
+#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) \
+ ({ \
+ unsigned int nid = PFN_TO_NID(pfn); \
+ int valid = nid < MAX_NUMNODES; \
+ if (valid) { \
+ pg_data_t *node = NODE_DATA(nid); \
+ valid = (pfn - node->node_start_pfn) < \
+ node->node_spanned_pages; \
+ } \
+ valid; \
+ })
#define virt_to_page(kaddr) \
(ADDR_TO_MAPBASE(kaddr) + LOCAL_MAP_NR(kaddr))
+
#define virt_addr_valid(kaddr) (KVADDR_TO_NID(kaddr) < MAX_NUMNODES)
/*
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
/*
+ * Optional device DMA address remapping. Do _not_ use directly!
* We should really eliminate virt_to_bus() here - it's deprecated.
*/
-#define page_to_bus(page) (virt_to_bus(page_address(page)))
+#ifndef __arch_page_to_dma
+#define page_to_dma(dev, page) ((dma_addr_t)__virt_to_bus((unsigned long)page_address(page)))
+#define dma_to_virt(dev, addr) ((void *)__bus_to_virt(addr))
+#define virt_to_dma(dev, addr) ((dma_addr_t)__virt_to_bus((unsigned long)(addr)))
+#else
+#define page_to_dma(dev, page) (__arch_page_to_dma(dev, page))
+#define dma_to_virt(dev, addr) (__arch_dma_to_virt(dev, addr))
+#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