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gerrit-public.fairphone.software / kernel / msm / c0a8520c7333dd62624683772f31864c7f9c46d9 / . / arch / sparc / mm / tsunami.S
blob: 697af617594ae24851a7a98336afb3240589f938 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/* $Id: tsunami.S,v 1.7 2001/12/21 04:56:15 davem Exp $
2 * tsunami.S: High speed MicroSparc-I mmu/cache operations.
3 *
4 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
5 */
6
7#include <linux/config.h>
8#include <asm/ptrace.h>
Sam Ravnborg47003492005-09-09 20:35:55 +0200[diff] [blame]9#include <asm/asm-offsets.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]10#include <asm/psr.h>
11#include <asm/asi.h>
12#include <asm/page.h>
13#include <asm/pgtsrmmu.h>
14
15 .text
16 .align 4
17
18 .globl tsunami_flush_cache_all, tsunami_flush_cache_mm
19 .globl tsunami_flush_cache_range, tsunami_flush_cache_page
20 .globl tsunami_flush_page_to_ram, tsunami_flush_page_for_dma
21 .globl tsunami_flush_sig_insns
22 .globl tsunami_flush_tlb_all, tsunami_flush_tlb_mm
23 .globl tsunami_flush_tlb_range, tsunami_flush_tlb_page
24
25 /* Sliiick... */
26tsunami_flush_cache_page:
27tsunami_flush_cache_range:
28 ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
29tsunami_flush_cache_mm:
30 ld [%o0 + AOFF_mm_context], %g2
31 cmp %g2, -1
32 be tsunami_flush_cache_out
33tsunami_flush_cache_all:
34 WINDOW_FLUSH(%g4, %g5)
35tsunami_flush_page_for_dma:
36 sta %g0, [%g0] ASI_M_IC_FLCLEAR
37 sta %g0, [%g0] ASI_M_DC_FLCLEAR
38tsunami_flush_cache_out:
39tsunami_flush_page_to_ram:
40 retl
41 nop
42
43tsunami_flush_sig_insns:
44 flush %o1
45 retl
46 flush %o1 + 4
47
48 /* More slick stuff... */
49tsunami_flush_tlb_range:
50 ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
51tsunami_flush_tlb_mm:
52 ld [%o0 + AOFF_mm_context], %g2
53 cmp %g2, -1
54 be tsunami_flush_tlb_out
55tsunami_flush_tlb_all:
56 mov 0x400, %o1
57 sta %g0, [%o1] ASI_M_FLUSH_PROBE
58 nop
59 nop
60 nop
61 nop
62 nop
63tsunami_flush_tlb_out:
64 retl
65 nop
66
67 /* This one can be done in a fine grained manner... */
68tsunami_flush_tlb_page:
69 ld [%o0 + 0x00], %o0 /* XXX vma->vm_mm GROSS XXX */
70 mov SRMMU_CTX_REG, %g1
71 ld [%o0 + AOFF_mm_context], %o3
72 andn %o1, (PAGE_SIZE - 1), %o1
73 cmp %o3, -1
74 be tsunami_flush_tlb_page_out
75 lda [%g1] ASI_M_MMUREGS, %g5
76 sta %o3, [%g1] ASI_M_MMUREGS
77 sta %g0, [%o1] ASI_M_FLUSH_PROBE
78 nop
79 nop
80 nop
81 nop
82 nop
83tsunami_flush_tlb_page_out:
84 retl
85 sta %g5, [%g1] ASI_M_MMUREGS
86
87#define MIRROR_BLOCK(dst, src, offset, t0, t1, t2, t3) \
88 ldd [src + offset + 0x18], t0; \
89 std t0, [dst + offset + 0x18]; \
90 ldd [src + offset + 0x10], t2; \
91 std t2, [dst + offset + 0x10]; \
92 ldd [src + offset + 0x08], t0; \
93 std t0, [dst + offset + 0x08]; \
94 ldd [src + offset + 0x00], t2; \
95 std t2, [dst + offset + 0x00];
96
97 .globl tsunami_copy_1page
98tsunami_copy_1page:
99/* NOTE: This routine has to be shorter than 70insns --jj */
100 or %g0, (PAGE_SIZE >> 8), %g1
1011:
102 MIRROR_BLOCK(%o0, %o1, 0x00, %o2, %o3, %o4, %o5)
103 MIRROR_BLOCK(%o0, %o1, 0x20, %o2, %o3, %o4, %o5)
104 MIRROR_BLOCK(%o0, %o1, 0x40, %o2, %o3, %o4, %o5)
105 MIRROR_BLOCK(%o0, %o1, 0x60, %o2, %o3, %o4, %o5)
106 MIRROR_BLOCK(%o0, %o1, 0x80, %o2, %o3, %o4, %o5)
107 MIRROR_BLOCK(%o0, %o1, 0xa0, %o2, %o3, %o4, %o5)
108 MIRROR_BLOCK(%o0, %o1, 0xc0, %o2, %o3, %o4, %o5)
109 MIRROR_BLOCK(%o0, %o1, 0xe0, %o2, %o3, %o4, %o5)
110 subcc %g1, 1, %g1
111 add %o0, 0x100, %o0
112 bne 1b
113 add %o1, 0x100, %o1
114
115 .globl tsunami_setup_blockops
116tsunami_setup_blockops:
117 sethi %hi(__copy_1page), %o0
118 or %o0, %lo(__copy_1page), %o0
119 sethi %hi(tsunami_copy_1page), %o1
120 or %o1, %lo(tsunami_copy_1page), %o1
121 sethi %hi(tsunami_setup_blockops), %o2
122 or %o2, %lo(tsunami_setup_blockops), %o2
123 ld [%o1], %o4
1241: add %o1, 4, %o1
125 st %o4, [%o0]
126 add %o0, 4, %o0
127 cmp %o1, %o2
128 bne 1b
129 ld [%o1], %o4
130 sta %g0, [%g0] ASI_M_IC_FLCLEAR
131 sta %g0, [%g0] ASI_M_DC_FLCLEAR
132 retl
133 nop