1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
| /* SPDX-License-Identifier: GPL-2.0 */
| /*
| * swift.S: MicroSparc-II mmu/cache operations.
| *
| * Copyright (C) 1999 David S. Miller (davem@redhat.com)
| */
|
| #include <asm/psr.h>
| #include <asm/asi.h>
| #include <asm/page.h>
| #include <asm/pgtsrmmu.h>
| #include <asm/asm-offsets.h>
|
| .text
| .align 4
|
| #if 1 /* XXX screw this, I can't get the VAC flushes working
| * XXX reliably... -DaveM
| */
| .globl swift_flush_cache_all, swift_flush_cache_mm
| .globl swift_flush_cache_range, swift_flush_cache_page
| .globl swift_flush_page_for_dma
| .globl swift_flush_page_to_ram
|
| swift_flush_cache_all:
| swift_flush_cache_mm:
| swift_flush_cache_range:
| swift_flush_cache_page:
| swift_flush_page_for_dma:
| swift_flush_page_to_ram:
| sethi %hi(0x2000), %o0
| 1: subcc %o0, 0x10, %o0
| add %o0, %o0, %o1
| sta %g0, [%o0] ASI_M_DATAC_TAG
| bne 1b
| sta %g0, [%o1] ASI_M_TXTC_TAG
| retl
| nop
| #else
|
| .globl swift_flush_cache_all
| swift_flush_cache_all:
| WINDOW_FLUSH(%g4, %g5)
|
| /* Just clear out all the tags. */
| sethi %hi(16 * 1024), %o0
| 1: subcc %o0, 16, %o0
| sta %g0, [%o0] ASI_M_TXTC_TAG
| bne 1b
| sta %g0, [%o0] ASI_M_DATAC_TAG
| retl
| nop
|
| .globl swift_flush_cache_mm
| swift_flush_cache_mm:
| ld [%o0 + AOFF_mm_context], %g2
| cmp %g2, -1
| be swift_flush_cache_mm_out
| WINDOW_FLUSH(%g4, %g5)
| rd %psr, %g1
| andn %g1, PSR_ET, %g3
| wr %g3, 0x0, %psr
| nop
| nop
| mov SRMMU_CTX_REG, %g7
| lda [%g7] ASI_M_MMUREGS, %g5
| sta %g2, [%g7] ASI_M_MMUREGS
|
| #if 1
| sethi %hi(0x2000), %o0
| 1: subcc %o0, 0x10, %o0
| sta %g0, [%o0] ASI_M_FLUSH_CTX
| bne 1b
| nop
| #else
| clr %o0
| or %g0, 2048, %g7
| or %g0, 2048, %o1
| add %o1, 2048, %o2
| add %o2, 2048, %o3
| mov 16, %o4
| add %o4, 2048, %o5
| add %o5, 2048, %g2
| add %g2, 2048, %g3
| 1: sta %g0, [%o0 ] ASI_M_FLUSH_CTX
| sta %g0, [%o0 + %o1] ASI_M_FLUSH_CTX
| sta %g0, [%o0 + %o2] ASI_M_FLUSH_CTX
| sta %g0, [%o0 + %o3] ASI_M_FLUSH_CTX
| sta %g0, [%o0 + %o4] ASI_M_FLUSH_CTX
| sta %g0, [%o0 + %o5] ASI_M_FLUSH_CTX
| sta %g0, [%o0 + %g2] ASI_M_FLUSH_CTX
| sta %g0, [%o0 + %g3] ASI_M_FLUSH_CTX
| subcc %g7, 32, %g7
| bne 1b
| add %o0, 32, %o0
| #endif
|
| mov SRMMU_CTX_REG, %g7
| sta %g5, [%g7] ASI_M_MMUREGS
| wr %g1, 0x0, %psr
| nop
| nop
| swift_flush_cache_mm_out:
| retl
| nop
|
| .globl swift_flush_cache_range
| swift_flush_cache_range:
| ld [%o0 + VMA_VM_MM], %o0
| sub %o2, %o1, %o2
| sethi %hi(4096), %o3
| cmp %o2, %o3
| bgu swift_flush_cache_mm
| nop
| b 70f
| nop
|
| .globl swift_flush_cache_page
| swift_flush_cache_page:
| ld [%o0 + VMA_VM_MM], %o0
| 70:
| ld [%o0 + AOFF_mm_context], %g2
| cmp %g2, -1
| be swift_flush_cache_page_out
| WINDOW_FLUSH(%g4, %g5)
| rd %psr, %g1
| andn %g1, PSR_ET, %g3
| wr %g3, 0x0, %psr
| nop
| nop
| mov SRMMU_CTX_REG, %g7
| lda [%g7] ASI_M_MMUREGS, %g5
| sta %g2, [%g7] ASI_M_MMUREGS
|
| andn %o1, (PAGE_SIZE - 1), %o1
| #if 1
| sethi %hi(0x1000), %o0
| 1: subcc %o0, 0x10, %o0
| sta %g0, [%o1 + %o0] ASI_M_FLUSH_PAGE
| bne 1b
| nop
| #else
| or %g0, 512, %g7
| or %g0, 512, %o0
| add %o0, 512, %o2
| add %o2, 512, %o3
| add %o3, 512, %o4
| add %o4, 512, %o5
| add %o5, 512, %g3
| add %g3, 512, %g4
| 1: sta %g0, [%o1 ] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o0] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o2] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o3] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o4] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o5] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %g3] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %g4] ASI_M_FLUSH_PAGE
| subcc %g7, 16, %g7
| bne 1b
| add %o1, 16, %o1
| #endif
|
| mov SRMMU_CTX_REG, %g7
| sta %g5, [%g7] ASI_M_MMUREGS
| wr %g1, 0x0, %psr
| nop
| nop
| swift_flush_cache_page_out:
| retl
| nop
|
| /* Swift is write-thru, however it is not
| * I/O nor TLB-walk coherent. Also it has
| * caches which are virtually indexed and tagged.
| */
| .globl swift_flush_page_for_dma
| .globl swift_flush_page_to_ram
| swift_flush_page_for_dma:
| swift_flush_page_to_ram:
| andn %o0, (PAGE_SIZE - 1), %o1
| #if 1
| sethi %hi(0x1000), %o0
| 1: subcc %o0, 0x10, %o0
| sta %g0, [%o1 + %o0] ASI_M_FLUSH_PAGE
| bne 1b
| nop
| #else
| or %g0, 512, %g7
| or %g0, 512, %o0
| add %o0, 512, %o2
| add %o2, 512, %o3
| add %o3, 512, %o4
| add %o4, 512, %o5
| add %o5, 512, %g3
| add %g3, 512, %g4
| 1: sta %g0, [%o1 ] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o0] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o2] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o3] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o4] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %o5] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %g3] ASI_M_FLUSH_PAGE
| sta %g0, [%o1 + %g4] ASI_M_FLUSH_PAGE
| subcc %g7, 16, %g7
| bne 1b
| add %o1, 16, %o1
| #endif
| retl
| nop
| #endif
|
| .globl swift_flush_sig_insns
| swift_flush_sig_insns:
| flush %o1
| retl
| flush %o1 + 4
|
| .globl swift_flush_tlb_mm
| .globl swift_flush_tlb_range
| .globl swift_flush_tlb_all
| swift_flush_tlb_range:
| ld [%o0 + VMA_VM_MM], %o0
| swift_flush_tlb_mm:
| ld [%o0 + AOFF_mm_context], %g2
| cmp %g2, -1
| be swift_flush_tlb_all_out
| swift_flush_tlb_all:
| mov 0x400, %o1
| sta %g0, [%o1] ASI_M_FLUSH_PROBE
| swift_flush_tlb_all_out:
| retl
| nop
|
| .globl swift_flush_tlb_page
| swift_flush_tlb_page:
| ld [%o0 + VMA_VM_MM], %o0
| mov SRMMU_CTX_REG, %g1
| ld [%o0 + AOFF_mm_context], %o3
| andn %o1, (PAGE_SIZE - 1), %o1
| cmp %o3, -1
| be swift_flush_tlb_page_out
| nop
| #if 1
| mov 0x400, %o1
| sta %g0, [%o1] ASI_M_FLUSH_PROBE
| #else
| lda [%g1] ASI_M_MMUREGS, %g5
| sta %o3, [%g1] ASI_M_MMUREGS
| sta %g0, [%o1] ASI_M_FLUSH_PAGE /* rem. virt. cache. prot. */
| sta %g0, [%o1] ASI_M_FLUSH_PROBE
| sta %g5, [%g1] ASI_M_MMUREGS
| #endif
| swift_flush_tlb_page_out:
| retl
| nop
|
|
