X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-arm%2Farch-lh7a40x%2Fmemory.h;h=3480cb7f4b3414fbe01805b562782f9ab1e1ddee;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=1a1b1a3d5f96a62b3dac3f9a72e35d849c7e8916;hpb=db216c3d5e4c040e557a50f8f5d35d5c415e8c1c;p=linux-2.6.git

diff --git a/include/asm-arm/arch-lh7a40x/memory.h b/include/asm-arm/arch-lh7a40x/memory.h
index 1a1b1a3d5..3480cb7f4 100644
--- a/include/asm-arm/arch-lh7a40x/memory.h
+++ b/include/asm-arm/arch-lh7a40x/memory.h
@@ -6,14 +6,14 @@
  *  modify it under the terms of the GNU General Public License
  *  version 2 as published by the Free Software Foundation.
  *
+ *
+ *  Refer to <file:Documentation/arm/Sharp-LH/SDRAM> for more information.
+ *
  */
 
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-
-#define BANKS_PER_NODE 1	/* Define as either 1 or 2 */
-
 /*
  * Physical DRAM offset.
  */
@@ -30,57 +30,30 @@
 #define __bus_to_virt(x)	 __phys_to_virt(x)
 
 #ifdef CONFIG_DISCONTIGMEM
-/*
- * Because of the wide memory address space between physical RAM
- * banks, it's convenient to use Linux's NUMA support to represent our
- * memory map.  Assuming all memory nodes have equal access
- * characteristics, we then have a generic discontiguous memory setup.
- *
- * Of course, all this isn't mandatory for implementations with only
- * one used memory bank.  For those, simply undefine
- * CONFIG_DISCONTIGMEM.  However, keep in mind that a featurefull
- * system will need more than 4MiB of RAM.
- *
- * The contiguous memory blocks are small enough that it pays to
- * aggregate two banks into one node.  Setting BANKS_PER_NODE to 2
- * puts pairs of banks into a node.
- *
- * A typical layout would start like this:
- *
- *  node 0: 0xc0000000
- *          0xc1000000
- *  node 1: 0xc4000000
- *          0xc5000000
- *  node 2: 0xc8000000
- *          0xc9000000
- *
- * The proximity of the pairs of blocks makes it feasible to combine them.
- *
- */
 
 /*
  * Given a kernel address, find the home node of the underlying memory.
  */
 
-#if BANKS_PER_NODE==1
-#define KVADDR_TO_NID(addr) \
+# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE
+#  define KVADDR_TO_NID(addr) \
   (  ((((unsigned long) (addr) - PAGE_OFFSET) >> 24) &  1)\
    | ((((unsigned long) (addr) - PAGE_OFFSET) >> 25) & ~1))
-#else  /* 2 banks per node */
-#define KVADDR_TO_NID(addr) \
-       ((unsigned long) (addr) - PAGE_OFFSET) >> 26)
-#endif
+# else  /* 2 banks per node */
+#  define KVADDR_TO_NID(addr) \
+      (((unsigned long) (addr) - PAGE_OFFSET) >> 26)
+# endif
 
 /*
  * Given a page frame number, convert it to a node id.
  */
 
-#if BANKS_PER_NODE==1
-#define PFN_TO_NID(pfn) \
+# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE
+#  define PFN_TO_NID(pfn) \
   (((((pfn) - PHYS_PFN_OFFSET) >> (24 - PAGE_SHIFT)) &  1)\
  | ((((pfn) - PHYS_PFN_OFFSET) >> (25 - PAGE_SHIFT)) & ~1))
-#else  /* 2 banks per node */
-#define PFN_TO_NID(addr) \
+# else  /* 2 banks per node */
+#  define PFN_TO_NID(pfn) \
     (((pfn) - PHYS_PFN_OFFSET) >> (26 - PAGE_SHIFT))
 #endif
 
@@ -88,13 +61,13 @@
  * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
  * and return the mem_map of that node.
  */
-#define ADDR_TO_MAPBASE(kaddr)	NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
+# 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 return the mem_map of that node.
  */
-#define PFN_TO_MAPBASE(pfn)	NODE_MEM_MAP(PFN_TO_NID(pfn))
+# define PFN_TO_MAPBASE(pfn)	NODE_MEM_MAP(PFN_TO_NID(pfn))
 
 /*
  * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
@@ -102,17 +75,17 @@
  * node's mem_map.
  */
 
-#if BANKS_PER_NODE==1
-#define LOCAL_MAP_NR(addr) \
+# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE
+#  define LOCAL_MAP_NR(addr) \
        (((unsigned long)(addr) & 0x003fffff) >> PAGE_SHIFT)
-#else  /* 2 banks per node */
-#define LOCAL_MAP_NR(addr) \
+# else  /* 2 banks per node */
+#  define LOCAL_MAP_NR(addr) \
        (((unsigned long)(addr) & 0x01ffffff) >> PAGE_SHIFT)
-#endif
+# endif
 
 #else
 
-#define PFN_TO_NID(addr)	(0)
+# define PFN_TO_NID(addr)	(0)
 
 #endif