diff options
Diffstat (limited to 'arch/arm/mm/copypage-xsc3.S')
| -rw-r--r-- | arch/arm/mm/copypage-xsc3.S | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/arch/arm/mm/copypage-xsc3.S b/arch/arm/mm/copypage-xsc3.S deleted file mode 100644 index 9a2cb4332b4c..000000000000 --- a/arch/arm/mm/copypage-xsc3.S +++ /dev/null | |||
| @@ -1,97 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * linux/arch/arm/lib/copypage-xsc3.S | ||
| 3 | * | ||
| 4 | * Copyright (C) 2004 Intel Corp. | ||
| 5 | * | ||
| 6 | * This program is free software; you can redistribute it and/or modify | ||
| 7 | * it under the terms of the GNU General Public License version 2 as | ||
| 8 | * published by the Free Software Foundation. | ||
| 9 | * | ||
| 10 | * Adapted for 3rd gen XScale core, no more mini-dcache | ||
| 11 | * Author: Matt Gilbert (matthew.m.gilbert@intel.com) | ||
| 12 | */ | ||
| 13 | |||
| 14 | #include <linux/linkage.h> | ||
| 15 | #include <linux/init.h> | ||
| 16 | #include <asm/asm-offsets.h> | ||
| 17 | |||
| 18 | /* | ||
| 19 | * General note: | ||
| 20 | * We don't really want write-allocate cache behaviour for these functions | ||
| 21 | * since that will just eat through 8K of the cache. | ||
| 22 | */ | ||
| 23 | |||
| 24 | .text | ||
| 25 | .align 5 | ||
| 26 | /* | ||
| 27 | * XSC3 optimised copy_user_page | ||
| 28 | * r0 = destination | ||
| 29 | * r1 = source | ||
| 30 | * r2 = virtual user address of ultimate destination page | ||
| 31 | * | ||
| 32 | * The source page may have some clean entries in the cache already, but we | ||
| 33 | * can safely ignore them - break_cow() will flush them out of the cache | ||
| 34 | * if we eventually end up using our copied page. | ||
| 35 | * | ||
| 36 | */ | ||
| 37 | ENTRY(xsc3_mc_copy_user_page) | ||
| 38 | stmfd sp!, {r4, r5, lr} | ||
| 39 | mov lr, #PAGE_SZ/64-1 | ||
| 40 | |||
| 41 | pld [r1, #0] | ||
| 42 | pld [r1, #32] | ||
| 43 | 1: pld [r1, #64] | ||
| 44 | pld [r1, #96] | ||
| 45 | |||
| 46 | 2: ldrd r2, [r1], #8 | ||
| 47 | mov ip, r0 | ||
| 48 | ldrd r4, [r1], #8 | ||
| 49 | mcr p15, 0, ip, c7, c6, 1 @ invalidate | ||
| 50 | strd r2, [r0], #8 | ||
| 51 | ldrd r2, [r1], #8 | ||
| 52 | strd r4, [r0], #8 | ||
| 53 | ldrd r4, [r1], #8 | ||
| 54 | strd r2, [r0], #8 | ||
| 55 | strd r4, [r0], #8 | ||
| 56 | ldrd r2, [r1], #8 | ||
| 57 | mov ip, r0 | ||
| 58 | ldrd r4, [r1], #8 | ||
| 59 | mcr p15, 0, ip, c7, c6, 1 @ invalidate | ||
| 60 | strd r2, [r0], #8 | ||
| 61 | ldrd r2, [r1], #8 | ||
| 62 | subs lr, lr, #1 | ||
| 63 | strd r4, [r0], #8 | ||
| 64 | ldrd r4, [r1], #8 | ||
| 65 | strd r2, [r0], #8 | ||
| 66 | strd r4, [r0], #8 | ||
| 67 | bgt 1b | ||
| 68 | beq 2b | ||
| 69 | |||
| 70 | ldmfd sp!, {r4, r5, pc} | ||
| 71 | |||
| 72 | .align 5 | ||
| 73 | /* | ||
| 74 | * XScale optimised clear_user_page | ||
| 75 | * r0 = destination | ||
| 76 | * r1 = virtual user address of ultimate destination page | ||
| 77 | */ | ||
| 78 | ENTRY(xsc3_mc_clear_user_page) | ||
| 79 | mov r1, #PAGE_SZ/32 | ||
| 80 | mov r2, #0 | ||
| 81 | mov r3, #0 | ||
| 82 | 1: mcr p15, 0, r0, c7, c6, 1 @ invalidate line | ||
| 83 | strd r2, [r0], #8 | ||
| 84 | strd r2, [r0], #8 | ||
| 85 | strd r2, [r0], #8 | ||
| 86 | strd r2, [r0], #8 | ||
| 87 | subs r1, r1, #1 | ||
| 88 | bne 1b | ||
| 89 | mov pc, lr | ||
| 90 | |||
| 91 | __INITDATA | ||
| 92 | |||
| 93 | .type xsc3_mc_user_fns, #object | ||
| 94 | ENTRY(xsc3_mc_user_fns) | ||
| 95 | .long xsc3_mc_clear_user_page | ||
| 96 | .long xsc3_mc_copy_user_page | ||
| 97 | .size xsc3_mc_user_fns, . - xsc3_mc_user_fns | ||