diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-28 17:03:14 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-28 17:03:14 -0400 |
commit | 0fe41b8982001cd14ee2c77cd776735a5024e98b (patch) | |
tree | 83e65d595c413d55259ea14fb97748ce5efe5707 /arch/arm/mm/tlb-fa.S | |
parent | eedf2c5296a8dfaaf9aec1a938c1d3bd73159a30 (diff) | |
parent | 9759d22c8348343b0da4e25d6150c41712686c14 (diff) |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (422 commits)
[ARM] 5435/1: fix compile warning in sanity_check_meminfo()
[ARM] 5434/1: ARM: OMAP: Fix mailbox compile for 24xx
[ARM] pxa: fix the bad assumption that PCMCIA sockets always start with 0
[ARM] pxa: fix Colibri PXA300 and PXA320 LCD backlight pins
imxfb: Fix TFT mode
i.MX21/27: remove ifdef CONFIG_FB_IMX
imxfb: add clock support
mxc: add arch_reset() function
clkdev: add possibility to get a clock based on the device name
i.MX1: remove fb support from mach-imx
[ARM] pxa: build arch/arm/plat-pxa/mfp.c only when PXA3xx or ARCH_MMP defined
Gemini: Add support for Teltonika RUT100
Gemini: gpiolib based GPIO support v2
MAINTAINERS: add myself as Gemini architecture maintainer
ARM: Add Gemini architecture v3
[ARM] OMAP: Fix compile for omap2_init_common_hw()
MAINTAINERS: Add myself as Faraday ARM core variant maintainer
ARM: Add support for FA526 v2
[ARM] acorn,ebsa110,footbridge,integrator,sa1100: Convert asm/io.h to linux/io.h
[ARM] collie: fix two minor formatting nits
...
Diffstat (limited to 'arch/arm/mm/tlb-fa.S')
-rw-r--r-- | arch/arm/mm/tlb-fa.S | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/arm/mm/tlb-fa.S b/arch/arm/mm/tlb-fa.S new file mode 100644 index 000000000000..9694f1f6f485 --- /dev/null +++ b/arch/arm/mm/tlb-fa.S | |||
@@ -0,0 +1,75 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mm/tlb-fa.S | ||
3 | * | ||
4 | * Copyright (C) 2005 Faraday Corp. | ||
5 | * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> | ||
6 | * | ||
7 | * Based on tlb-v4wbi.S: | ||
8 | * Copyright (C) 1997-2002 Russell King | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or modify | ||
11 | * it under the terms of the GNU General Public License version 2 as | ||
12 | * published by the Free Software Foundation. | ||
13 | * | ||
14 | * ARM architecture version 4, Faraday variation. | ||
15 | * This assume an unified TLBs, with a write buffer, and branch target buffer (BTB) | ||
16 | * | ||
17 | * Processors: FA520 FA526 FA626 | ||
18 | */ | ||
19 | #include <linux/linkage.h> | ||
20 | #include <linux/init.h> | ||
21 | #include <asm/asm-offsets.h> | ||
22 | #include <asm/tlbflush.h> | ||
23 | #include "proc-macros.S" | ||
24 | |||
25 | |||
26 | /* | ||
27 | * flush_user_tlb_range(start, end, mm) | ||
28 | * | ||
29 | * Invalidate a range of TLB entries in the specified address space. | ||
30 | * | ||
31 | * - start - range start address | ||
32 | * - end - range end address | ||
33 | * - mm - mm_struct describing address space | ||
34 | */ | ||
35 | .align 4 | ||
36 | ENTRY(fa_flush_user_tlb_range) | ||
37 | vma_vm_mm ip, r2 | ||
38 | act_mm r3 @ get current->active_mm | ||
39 | eors r3, ip, r3 @ == mm ? | ||
40 | movne pc, lr @ no, we dont do anything | ||
41 | mov r3, #0 | ||
42 | mcr p15, 0, r3, c7, c10, 4 @ drain WB | ||
43 | bic r0, r0, #0x0ff | ||
44 | bic r0, r0, #0xf00 | ||
45 | 1: mcr p15, 0, r0, c8, c7, 1 @ invalidate UTLB entry | ||
46 | add r0, r0, #PAGE_SZ | ||
47 | cmp r0, r1 | ||
48 | blo 1b | ||
49 | mcr p15, 0, r3, c7, c5, 6 @ invalidate BTB | ||
50 | mcr p15, 0, r3, c7, c10, 4 @ data write barrier | ||
51 | mov pc, lr | ||
52 | |||
53 | |||
54 | ENTRY(fa_flush_kern_tlb_range) | ||
55 | mov r3, #0 | ||
56 | mcr p15, 0, r3, c7, c10, 4 @ drain WB | ||
57 | bic r0, r0, #0x0ff | ||
58 | bic r0, r0, #0xf00 | ||
59 | 1: mcr p15, 0, r0, c8, c7, 1 @ invalidate UTLB entry | ||
60 | add r0, r0, #PAGE_SZ | ||
61 | cmp r0, r1 | ||
62 | blo 1b | ||
63 | mcr p15, 0, r3, c7, c5, 6 @ invalidate BTB | ||
64 | mcr p15, 0, r3, c7, c10, 4 @ data write barrier | ||
65 | mcr p15, 0, r3, c7, c5, 4 @ prefetch flush | ||
66 | mov pc, lr | ||
67 | |||
68 | __INITDATA | ||
69 | |||
70 | .type fa_tlb_fns, #object | ||
71 | ENTRY(fa_tlb_fns) | ||
72 | .long fa_flush_user_tlb_range | ||
73 | .long fa_flush_kern_tlb_range | ||
74 | .long fa_tlb_flags | ||
75 | .size fa_tlb_fns, . - fa_tlb_fns | ||