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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-11-30 15:39:18 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-11-30 17:52:28 -0500
commitb7dc96d75309346c1213875be68fdbbec92da5e7 (patch)
treeb6f85da5e99cb3f20fef42504ce7b82b4a69c6fc
parent0215ffb08ce99e2bb59eca114a99499a4d06e704 (diff)
[ARM] Clean up discontigmem support
Most architectures have fairly simple discontiguous memory - a simple set of successive regions each containing some memory. These can be described simply as a log2 of their maximum size, along with the base address of the first region and the number of regions. The base address is already described by PHYS_PFN_OFFSET, and the number of regions via the MAX_NUMNODES and the number of online nodes. If we then supply the log2 of their maximum size, all the other discontigmem macros can move into generic code. There is one exception: lh7a40x seems to have a more complicated setup; this is left alone. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--include/asm-arm/arch-aaec2000/memory.h40
-rw-r--r--include/asm-arm/arch-clps711x/memory.h53
-rw-r--r--include/asm-arm/arch-lh7a40x/memory.h12
-rw-r--r--include/asm-arm/arch-pxa/memory.h36
-rw-r--r--include/asm-arm/arch-sa1100/memory.h34
-rw-r--r--include/asm-arm/memory.h39
6 files changed, 54 insertions, 160 deletions
diff --git a/include/asm-arm/arch-aaec2000/memory.h b/include/asm-arm/arch-aaec2000/memory.h
index 24b51cccde8f..9eceb4148922 100644
--- a/include/asm-arm/arch-aaec2000/memory.h
+++ b/include/asm-arm/arch-aaec2000/memory.h
@@ -17,8 +17,6 @@
17#define __virt_to_bus(x) __virt_to_phys(x) 17#define __virt_to_bus(x) __virt_to_phys(x)
18#define __bus_to_virt(x) __phys_to_virt(x) 18#define __bus_to_virt(x) __phys_to_virt(x)
19 19
20#ifdef CONFIG_DISCONTIGMEM
21
22/* 20/*
23 * The nodes are the followings: 21 * The nodes are the followings:
24 * 22 *
@@ -27,42 +25,6 @@
27 * node 2: 0xf800.0000 - 0xfbff.ffff 25 * node 2: 0xf800.0000 - 0xfbff.ffff
28 * node 3: 0xfc00.0000 - 0xffff.ffff 26 * node 3: 0xfc00.0000 - 0xffff.ffff
29 */ 27 */
30 28#define NODE_MEM_SIZE_BITS 26
31/*
32 * Given a kernel address, find the home node of the underlying memory.
33 */
34#define KVADDR_TO_NID(addr) \
35 (((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MAX_MEM_SHIFT)
36
37/*
38 * Given a page frame number, convert it to a node id.
39 */
40#define PFN_TO_NID(pfn) \
41 (((pfn) - PHYS_PFN_OFFSET) >> (NODE_MAX_MEM_SHIFT - PAGE_SHIFT))
42
43/*
44 * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
45 * and return the mem_map of that node.
46 */
47#define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
48
49/*
50 * Given a page frame number, find the owning node of the memory
51 * and return the mem_map of that node.
52 */
53#define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
54
55/*
56 * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
57 * and returns the index corresponding to the appropriate page in the
58 * node's mem_map.
59 */
60#define LOCAL_MAP_NR(addr) \
61 (((unsigned long)(addr) & (NODE_MAX_MEM_SIZE - 1)) >> PAGE_SHIFT)
62
63#define NODE_MAX_MEM_SHIFT 26
64#define NODE_MAX_MEM_SIZE (1 << NODE_MAX_MEM_SHIFT)
65
66#endif /* CONFIG_DISCONTIGMEM */
67 29
68#endif /* __ASM_ARCH_MEMORY_H */ 30#endif /* __ASM_ARCH_MEMORY_H */
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
diff --git a/include/asm-arm/arch-lh7a40x/memory.h b/include/asm-arm/arch-lh7a40x/memory.h
index 9f1a58cbf407..9b0c8012e713 100644
--- a/include/asm-arm/arch-lh7a40x/memory.h
+++ b/include/asm-arm/arch-lh7a40x/memory.h
@@ -58,18 +58,6 @@
58#endif 58#endif
59 59
60/* 60/*
61 * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
62 * and return the mem_map of that node.
63 */
64# define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
65
66/*
67 * Given a page frame number, find the owning node of the memory
68 * and return the mem_map of that node.
69 */
70# define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
71
72/*
73 * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory 61 * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
74 * and returns the index corresponding to the appropriate page in the 62 * and returns the index corresponding to the appropriate page in the
75 * node's mem_map. 63 * node's mem_map.
diff --git a/include/asm-arm/arch-pxa/memory.h b/include/asm-arm/arch-pxa/memory.h
index eaf6d43939e9..e17f9881faf0 100644
--- a/include/asm-arm/arch-pxa/memory.h
+++ b/include/asm-arm/arch-pxa/memory.h
@@ -27,7 +27,6 @@
27#define __virt_to_bus(x) __virt_to_phys(x) 27#define __virt_to_bus(x) __virt_to_phys(x)
28#define __bus_to_virt(x) __phys_to_virt(x) 28#define __bus_to_virt(x) __phys_to_virt(x)
29 29
30#ifdef CONFIG_DISCONTIGMEM
31/* 30/*
32 * The nodes are matched with the physical SDRAM banks as follows: 31 * The nodes are matched with the physical SDRAM banks as follows:
33 * 32 *
@@ -35,38 +34,9 @@
35 * node 1: 0xa4000000-0xa7ffffff --> 0xc4000000-0xc7ffffff 34 * node 1: 0xa4000000-0xa7ffffff --> 0xc4000000-0xc7ffffff
36 * node 2: 0xa8000000-0xabffffff --> 0xc8000000-0xcbffffff 35 * node 2: 0xa8000000-0xabffffff --> 0xc8000000-0xcbffffff
37 * node 3: 0xac000000-0xafffffff --> 0xcc000000-0xcfffffff 36 * node 3: 0xac000000-0xafffffff --> 0xcc000000-0xcfffffff
37 *
38 * This needs a node mem size of 26 bits.
38 */ 39 */
39 40#define NODE_MEM_SIZE_BITS 26
40/*
41 * Given a kernel address, find the home node of the underlying memory.
42 */
43#define KVADDR_TO_NID(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> 26)
44
45/*
46 * Given a page frame number, convert it to a node id.
47 */
48#define PFN_TO_NID(pfn) (((pfn) - PHYS_PFN_OFFSET) >> (26 - PAGE_SHIFT))
49
50/*
51 * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
52 * and returns the mem_map of that node.
53 */
54#define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
55
56/*
57 * Given a page frame number, find the owning node of the memory
58 * and returns the mem_map of that node.
59 */
60#define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
61
62/*
63 * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
64 * and returns the index corresponding to the appropriate page in the
65 * node's mem_map.
66 */
67#define LOCAL_MAP_NR(addr) \
68 (((unsigned long)(addr) & 0x03ffffff) >> PAGE_SHIFT)
69
70#endif
71 41
72#endif 42#endif
diff --git a/include/asm-arm/arch-sa1100/memory.h b/include/asm-arm/arch-sa1100/memory.h
index 1ff172dc8e33..0e907fc6d42a 100644
--- a/include/asm-arm/arch-sa1100/memory.h
+++ b/include/asm-arm/arch-sa1100/memory.h
@@ -39,7 +39,6 @@ void sa1111_adjust_zones(int node, unsigned long *size, unsigned long *holes);
39#define __virt_to_bus(x) __virt_to_phys(x) 39#define __virt_to_bus(x) __virt_to_phys(x)
40#define __bus_to_virt(x) __phys_to_virt(x) 40#define __bus_to_virt(x) __phys_to_virt(x)
41 41
42#ifdef CONFIG_DISCONTIGMEM
43/* 42/*
44 * Because of the wide memory address space between physical RAM banks on the 43 * Because of the wide memory address space between physical RAM banks on the
45 * SA1100, it's much convenient to use Linux's NUMA support to implement our 44 * SA1100, it's much convenient to use Linux's NUMA support to implement our
@@ -57,38 +56,7 @@ void sa1111_adjust_zones(int node, unsigned long *size, unsigned long *holes);
57 * node 2: 0xd0000000 - 0xd7ffffff 56 * node 2: 0xd0000000 - 0xd7ffffff
58 * node 3: 0xd8000000 - 0xdfffffff 57 * node 3: 0xd8000000 - 0xdfffffff
59 */ 58 */
60 59#define NODE_MEM_SIZE_BITS 27
61/*
62 * Given a kernel address, find the home node of the underlying memory.
63 */
64#define KVADDR_TO_NID(addr) (((unsigned long)(addr) - PAGE_OFFSET) >> 27)
65
66/*
67 * Given a page frame number, convert it to a node id.
68 */
69#define PFN_TO_NID(pfn) (((pfn) - PHYS_PFN_OFFSET) >> (27 - PAGE_SHIFT))
70
71/*
72 * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
73 * and return the mem_map of that node.
74 */
75#define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
76
77/*
78 * Given a page frame number, find the owning node of the memory
79 * and return the mem_map of that node.
80 */
81#define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
82
83/*
84 * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
85 * and returns the index corresponding to the appropriate page in the
86 * node's mem_map.
87 */
88#define LOCAL_MAP_NR(addr) \
89 (((unsigned long)(addr) & 0x07ffffff) >> PAGE_SHIFT)
90
91#endif
92 60
93/* 61/*
94 * Cache flushing area - SA1100 zero bank 62 * Cache flushing area - SA1100 zero bank
diff --git a/include/asm-arm/memory.h b/include/asm-arm/memory.h
index 91d536c215d7..d9bfb39adabf 100644
--- a/include/asm-arm/memory.h
+++ b/include/asm-arm/memory.h
@@ -215,6 +215,7 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
215 * virt_addr_valid(k) indicates whether a virtual address is valid 215 * virt_addr_valid(k) indicates whether a virtual address is valid
216 */ 216 */
217#ifndef CONFIG_DISCONTIGMEM 217#ifndef CONFIG_DISCONTIGMEM
218
218#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET 219#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
219#define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr)) 220#define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
220 221
@@ -230,6 +231,7 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
230 * around in memory. 231 * around in memory.
231 */ 232 */
232#include <linux/numa.h> 233#include <linux/numa.h>
234
233#define arch_pfn_to_nid(pfn) PFN_TO_NID(pfn) 235#define arch_pfn_to_nid(pfn) PFN_TO_NID(pfn)
234#define arch_local_page_offset(pfn, nid) LOCAL_MAP_NR((pfn) << PAGE_SHIFT) 236#define arch_local_page_offset(pfn, nid) LOCAL_MAP_NR((pfn) << PAGE_SHIFT)
235 237
@@ -256,6 +258,43 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
256 */ 258 */
257#define PHYS_TO_NID(addr) PFN_TO_NID((addr) >> PAGE_SHIFT) 259#define PHYS_TO_NID(addr) PFN_TO_NID((addr) >> PAGE_SHIFT)
258 260
261/*
262 * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
263 * and returns the mem_map of that node.
264 */
265#define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
266
267/*
268 * Given a page frame number, find the owning node of the memory
269 * and returns the mem_map of that node.
270 */
271#define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
272
273#ifdef NODE_MEM_SIZE_BITS
274#define NODE_MEM_SIZE_MASK ((1 << NODE_MEM_SIZE_BITS) - 1)
275
276/*
277 * Given a kernel address, find the home node of the underlying memory.
278 */
279#define KVADDR_TO_NID(addr) \
280 (((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MEM_SIZE_BITS)
281
282/*
283 * Given a page frame number, convert it to a node id.
284 */
285#define PFN_TO_NID(pfn) \
286 (((pfn) - PHYS_PFN_OFFSET) >> (NODE_MEM_SIZE_BITS - PAGE_SHIFT))
287
288/*
289 * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
290 * and returns the index corresponding to the appropriate page in the
291 * node's mem_map.
292 */
293#define LOCAL_MAP_NR(addr) \
294 (((unsigned long)(addr) & NODE_MEM_SIZE_MASK) >> PAGE_SHIFT)
295
296#endif /* NODE_MEM_SIZE_BITS */
297
259#endif /* !CONFIG_DISCONTIGMEM */ 298#endif /* !CONFIG_DISCONTIGMEM */
260 299
261/* 300/*