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authorDavid S. Miller <davem@davemloft.net>2010-12-27 01:37:05 -0500
committerDavid S. Miller <davem@davemloft.net>2010-12-27 01:37:05 -0500
commit17f7f4d9fcce8f1b75b5f735569309dee7665968 (patch)
tree14d7e49ca0053a0fcab3c33b5023bf3f90c5c08a /arch/arm/mm/proc-macros.S
parent041110a439e21cd40709ead4ffbfa8034619ad77 (diff)
parentd7c1255a3a21e98bdc64df8ccf005a174d7e6289 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: net/ipv4/fib_frontend.c
Diffstat (limited to 'arch/arm/mm/proc-macros.S')
-rw-r--r--arch/arm/mm/proc-macros.S22
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
index 7d63beaf9745..b795afd0a2c6 100644
--- a/arch/arm/mm/proc-macros.S
+++ b/arch/arm/mm/proc-macros.S
@@ -61,17 +61,27 @@
61 .endm 61 .endm
62 62
63/* 63/*
64 * cache_line_size - get the cache line size from the CSIDR register 64 * dcache_line_size - get the minimum D-cache line size from the CTR register
65 * (available on ARMv7+). It assumes that the CSSR register was configured 65 * on ARMv7.
66 * to access the L1 data cache CSIDR.
67 */ 66 */
68 .macro dcache_line_size, reg, tmp 67 .macro dcache_line_size, reg, tmp
69 mrc p15, 1, \tmp, c0, c0, 0 @ read CSIDR 68 mrc p15, 0, \tmp, c0, c0, 1 @ read ctr
70 and \tmp, \tmp, #7 @ cache line size encoding 69 lsr \tmp, \tmp, #16
71 mov \reg, #16 @ size offset 70 and \tmp, \tmp, #0xf @ cache line size encoding
71 mov \reg, #4 @ bytes per word
72 mov \reg, \reg, lsl \tmp @ actual cache line size 72 mov \reg, \reg, lsl \tmp @ actual cache line size
73 .endm 73 .endm
74 74
75/*
76 * icache_line_size - get the minimum I-cache line size from the CTR register
77 * on ARMv7.
78 */
79 .macro icache_line_size, reg, tmp
80 mrc p15, 0, \tmp, c0, c0, 1 @ read ctr
81 and \tmp, \tmp, #0xf @ cache line size encoding
82 mov \reg, #4 @ bytes per word
83 mov \reg, \reg, lsl \tmp @ actual cache line size
84 .endm
75 85
76/* 86/*
77 * Sanity check the PTE configuration for the code below - which makes 87 * Sanity check the PTE configuration for the code below - which makes