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Diffstat (limited to 'include/asm-ia64/sn/fetchop.h')
-rw-r--r-- | include/asm-ia64/sn/fetchop.h | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/include/asm-ia64/sn/fetchop.h b/include/asm-ia64/sn/fetchop.h deleted file mode 100644 index 5f4ad8f4b5d2..000000000000 --- a/include/asm-ia64/sn/fetchop.h +++ /dev/null | |||
@@ -1,85 +0,0 @@ | |||
1 | /* | ||
2 | * | ||
3 | * This file is subject to the terms and conditions of the GNU General Public | ||
4 | * License. See the file "COPYING" in the main directory of this archive | ||
5 | * for more details. | ||
6 | * | ||
7 | * Copyright (c) 2001-2004 Silicon Graphics, Inc. All rights reserved. | ||
8 | */ | ||
9 | |||
10 | #ifndef _ASM_IA64_SN_FETCHOP_H | ||
11 | #define _ASM_IA64_SN_FETCHOP_H | ||
12 | |||
13 | #include <linux/config.h> | ||
14 | |||
15 | #define FETCHOP_BASENAME "sgi_fetchop" | ||
16 | #define FETCHOP_FULLNAME "/dev/sgi_fetchop" | ||
17 | |||
18 | |||
19 | |||
20 | #define FETCHOP_VAR_SIZE 64 /* 64 byte per fetchop variable */ | ||
21 | |||
22 | #define FETCHOP_LOAD 0 | ||
23 | #define FETCHOP_INCREMENT 8 | ||
24 | #define FETCHOP_DECREMENT 16 | ||
25 | #define FETCHOP_CLEAR 24 | ||
26 | |||
27 | #define FETCHOP_STORE 0 | ||
28 | #define FETCHOP_AND 24 | ||
29 | #define FETCHOP_OR 32 | ||
30 | |||
31 | #define FETCHOP_CLEAR_CACHE 56 | ||
32 | |||
33 | #define FETCHOP_LOAD_OP(addr, op) ( \ | ||
34 | *(volatile long *)((char*) (addr) + (op))) | ||
35 | |||
36 | #define FETCHOP_STORE_OP(addr, op, x) ( \ | ||
37 | *(volatile long *)((char*) (addr) + (op)) = (long) (x)) | ||
38 | |||
39 | #ifdef __KERNEL__ | ||
40 | |||
41 | /* | ||
42 | * Convert a region 6 (kaddr) address to the address of the fetchop variable | ||
43 | */ | ||
44 | #define FETCHOP_KADDR_TO_MSPEC_ADDR(kaddr) TO_MSPEC(kaddr) | ||
45 | |||
46 | |||
47 | /* | ||
48 | * Each Atomic Memory Operation (AMO formerly known as fetchop) | ||
49 | * variable is 64 bytes long. The first 8 bytes are used. The | ||
50 | * remaining 56 bytes are unaddressable due to the operation taking | ||
51 | * that portion of the address. | ||
52 | * | ||
53 | * NOTE: The AMO_t _MUST_ be placed in either the first or second half | ||
54 | * of the cache line. The cache line _MUST NOT_ be used for anything | ||
55 | * other than additional AMO_t entries. This is because there are two | ||
56 | * addresses which reference the same physical cache line. One will | ||
57 | * be a cached entry with the memory type bits all set. This address | ||
58 | * may be loaded into processor cache. The AMO_t will be referenced | ||
59 | * uncached via the memory special memory type. If any portion of the | ||
60 | * cached cache-line is modified, when that line is flushed, it will | ||
61 | * overwrite the uncached value in physical memory and lead to | ||
62 | * inconsistency. | ||
63 | */ | ||
64 | typedef struct { | ||
65 | u64 variable; | ||
66 | u64 unused[7]; | ||
67 | } AMO_t; | ||
68 | |||
69 | |||
70 | /* | ||
71 | * The following APIs are externalized to the kernel to allocate/free pages of | ||
72 | * fetchop variables. | ||
73 | * fetchop_kalloc_page - Allocate/initialize 1 fetchop page on the | ||
74 | * specified cnode. | ||
75 | * fetchop_kfree_page - Free a previously allocated fetchop page | ||
76 | */ | ||
77 | |||
78 | unsigned long fetchop_kalloc_page(int nid); | ||
79 | void fetchop_kfree_page(unsigned long maddr); | ||
80 | |||
81 | |||
82 | #endif /* __KERNEL__ */ | ||
83 | |||
84 | #endif /* _ASM_IA64_SN_FETCHOP_H */ | ||
85 | |||