diff options
Diffstat (limited to 'include/asm-arm/arch-clps711x/memory.h')
-rw-r--r-- | include/asm-arm/arch-clps711x/memory.h | 53 |
1 files changed, 10 insertions, 43 deletions
diff --git a/include/asm-arm/arch-clps711x/memory.h b/include/asm-arm/arch-clps711x/memory.h index c6e8dcf674de..42768cc8bfb4 100644 --- a/include/asm-arm/arch-clps711x/memory.h +++ b/include/asm-arm/arch-clps711x/memory.h | |||
@@ -62,7 +62,15 @@ | |||
62 | * memory bank. For those systems, simply undefine CONFIG_DISCONTIGMEM. | 62 | * memory bank. For those systems, simply undefine CONFIG_DISCONTIGMEM. |
63 | */ | 63 | */ |
64 | 64 | ||
65 | #ifdef CONFIG_DISCONTIGMEM | 65 | /* |
66 | * The PS7211 allows up to 256MB max per DRAM bank, but the EDB7211 | ||
67 | * uses only one of the two banks (bank #1). However, even within | ||
68 | * bank #1, memory is discontiguous. | ||
69 | * | ||
70 | * The EDB7211 has two 8MB DRAM areas with 8MB of empty space between | ||
71 | * them, so we use 24 for the node max shift to get 16MB node sizes. | ||
72 | */ | ||
73 | |||
66 | /* | 74 | /* |
67 | * Because of the wide memory address space between physical RAM banks on the | 75 | * Because of the wide memory address space between physical RAM banks on the |
68 | * SA1100, it's much more convenient to use Linux's NUMA support to implement | 76 | * SA1100, it's much more convenient to use Linux's NUMA support to implement |
@@ -80,48 +88,7 @@ | |||
80 | * node 2: 0xd0000000 - 0xd7ffffff | 88 | * node 2: 0xd0000000 - 0xd7ffffff |
81 | * node 3: 0xd8000000 - 0xdfffffff | 89 | * node 3: 0xd8000000 - 0xdfffffff |
82 | */ | 90 | */ |
83 | 91 | #define NODE_MEM_SIZE_BITS 24 | |
84 | /* | ||
85 | * Given a kernel address, find the home node of the underlying memory. | ||
86 | */ | ||
87 | #define KVADDR_TO_NID(addr) \ | ||
88 | (((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MAX_MEM_SHIFT) | ||
89 | |||
90 | /* | ||
91 | * Given a page frame number, convert it to a node id. | ||
92 | */ | ||
93 | #define PFN_TO_NID(pfn) \ | ||
94 | (((pfn) - PHYS_PFN_OFFSET) >> (NODE_MAX_MEM_SHIFT - PAGE_SHIFT)) | ||
95 | |||
96 | /* | ||
97 | * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory | ||
98 | * and returns the mem_map of that node. | ||
99 | */ | ||
100 | #define ADDR_TO_MAPBASE(kaddr) \ | ||
101 | NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr))) | ||
102 | |||
103 | #define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn)) | ||
104 | |||
105 | /* | ||
106 | * Given a kaddr, LOCAL_MAR_NR finds the owning node of the memory | ||
107 | * and returns the index corresponding to the appropriate page in the | ||
108 | * node's mem_map. | ||
109 | */ | ||
110 | #define LOCAL_MAP_NR(addr) \ | ||
111 | (((unsigned long)(addr) & (NODE_MAX_MEM_SIZE - 1)) >> PAGE_SHIFT) | ||
112 | |||
113 | /* | ||
114 | * The PS7211 allows up to 256MB max per DRAM bank, but the EDB7211 | ||
115 | * uses only one of the two banks (bank #1). However, even within | ||
116 | * bank #1, memory is discontiguous. | ||
117 | * | ||
118 | * The EDB7211 has two 8MB DRAM areas with 8MB of empty space between | ||
119 | * them, so we use 24 for the node max shift to get 16MB node sizes. | ||
120 | */ | ||
121 | #define NODE_MAX_MEM_SHIFT 24 | ||
122 | #define NODE_MAX_MEM_SIZE (1<<NODE_MAX_MEM_SHIFT) | ||
123 | |||
124 | #endif /* CONFIG_DISCONTIGMEM */ | ||
125 | 92 | ||
126 | #endif | 93 | #endif |
127 | 94 | ||