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authorDavid S. Miller <davem@sunset.davemloft.net>2005-10-04 18:23:20 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2005-10-04 18:23:20 -0400
commit0835ae0f27c0bfde67613d189ef6c537e004a6de (patch)
treead5cad209eeb11bd1bf49a3b5cffa49618c717c8 /arch/sparc64/kernel
parentdd7205ed0f022a2a5e60eb7404e6c9f49d2301c3 (diff)
[SPARC64]: Replace cheetah+ code patching with variables.
Instead of code patching to handle the page size fields in the context registers, just use variables from which we get the proper values. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel')
-rw-r--r--arch/sparc64/kernel/entry.S43
-rw-r--r--arch/sparc64/kernel/etrap.S51
-rw-r--r--arch/sparc64/kernel/head.S33
-rw-r--r--arch/sparc64/kernel/rtrap.S23
-rw-r--r--arch/sparc64/kernel/setup.c8
-rw-r--r--arch/sparc64/kernel/trampoline.S15
-rw-r--r--arch/sparc64/kernel/winfixup.S33
7 files changed, 27 insertions, 179 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index 2879b1072921..f685035dbdb8 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -97,8 +97,8 @@ do_fpdis:
97 faddd %f0, %f2, %f4 97 faddd %f0, %f2, %f4
98 fmuld %f0, %f2, %f6 98 fmuld %f0, %f2, %f6
99 ldxa [%g3] ASI_DMMU, %g5 99 ldxa [%g3] ASI_DMMU, %g5
100cplus_fptrap_insn_1: 100 sethi %hi(sparc64_kern_sec_context), %g2
101 sethi %hi(0), %g2 101 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
102 stxa %g2, [%g3] ASI_DMMU 102 stxa %g2, [%g3] ASI_DMMU
103 membar #Sync 103 membar #Sync
104 add %g6, TI_FPREGS + 0xc0, %g2 104 add %g6, TI_FPREGS + 0xc0, %g2
@@ -126,8 +126,8 @@ cplus_fptrap_insn_1:
126 fzero %f34 126 fzero %f34
127 ldxa [%g3] ASI_DMMU, %g5 127 ldxa [%g3] ASI_DMMU, %g5
128 add %g6, TI_FPREGS, %g1 128 add %g6, TI_FPREGS, %g1
129cplus_fptrap_insn_2: 129 sethi %hi(sparc64_kern_sec_context), %g2
130 sethi %hi(0), %g2 130 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
131 stxa %g2, [%g3] ASI_DMMU 131 stxa %g2, [%g3] ASI_DMMU
132 membar #Sync 132 membar #Sync
133 add %g6, TI_FPREGS + 0x40, %g2 133 add %g6, TI_FPREGS + 0x40, %g2
@@ -153,8 +153,8 @@ cplus_fptrap_insn_2:
1533: mov SECONDARY_CONTEXT, %g3 1533: mov SECONDARY_CONTEXT, %g3
154 add %g6, TI_FPREGS, %g1 154 add %g6, TI_FPREGS, %g1
155 ldxa [%g3] ASI_DMMU, %g5 155 ldxa [%g3] ASI_DMMU, %g5
156cplus_fptrap_insn_3: 156 sethi %hi(sparc64_kern_sec_context), %g2
157 sethi %hi(0), %g2 157 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
158 stxa %g2, [%g3] ASI_DMMU 158 stxa %g2, [%g3] ASI_DMMU
159 membar #Sync 159 membar #Sync
160 mov 0x40, %g2 160 mov 0x40, %g2
@@ -319,8 +319,8 @@ do_fptrap_after_fsr:
319 stx %g3, [%g6 + TI_GSR] 319 stx %g3, [%g6 + TI_GSR]
320 mov SECONDARY_CONTEXT, %g3 320 mov SECONDARY_CONTEXT, %g3
321 ldxa [%g3] ASI_DMMU, %g5 321 ldxa [%g3] ASI_DMMU, %g5
322cplus_fptrap_insn_4: 322 sethi %hi(sparc64_kern_sec_context), %g2
323 sethi %hi(0), %g2 323 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
324 stxa %g2, [%g3] ASI_DMMU 324 stxa %g2, [%g3] ASI_DMMU
325 membar #Sync 325 membar #Sync
326 add %g6, TI_FPREGS, %g2 326 add %g6, TI_FPREGS, %g2
@@ -341,33 +341,6 @@ cplus_fptrap_insn_4:
341 ba,pt %xcc, etrap 341 ba,pt %xcc, etrap
342 wr %g0, 0, %fprs 342 wr %g0, 0, %fprs
343 343
344cplus_fptrap_1:
345 sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2
346
347 .globl cheetah_plus_patch_fpdis
348cheetah_plus_patch_fpdis:
349 /* We configure the dTLB512_0 for 4MB pages and the
350 * dTLB512_1 for 8K pages when in context zero.
351 */
352 sethi %hi(cplus_fptrap_1), %o0
353 lduw [%o0 + %lo(cplus_fptrap_1)], %o1
354
355 set cplus_fptrap_insn_1, %o2
356 stw %o1, [%o2]
357 flush %o2
358 set cplus_fptrap_insn_2, %o2
359 stw %o1, [%o2]
360 flush %o2
361 set cplus_fptrap_insn_3, %o2
362 stw %o1, [%o2]
363 flush %o2
364 set cplus_fptrap_insn_4, %o2
365 stw %o1, [%o2]
366 flush %o2
367
368 retl
369 nop
370
371 /* The registers for cross calls will be: 344 /* The registers for cross calls will be:
372 * 345 *
373 * DATA 0: [low 32-bits] Address of function to call, jmp to this 346 * DATA 0: [low 32-bits] Address of function to call, jmp to this
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S
index 50d2af1d98ae..0d8eba21111b 100644
--- a/arch/sparc64/kernel/etrap.S
+++ b/arch/sparc64/kernel/etrap.S
@@ -68,12 +68,8 @@ etrap_irq:
68 68
69 wrpr %g3, 0, %otherwin 69 wrpr %g3, 0, %otherwin
70 wrpr %g2, 0, %wstate 70 wrpr %g2, 0, %wstate
71cplus_etrap_insn_1: 71 sethi %hi(sparc64_kern_pri_context), %g2
72 sethi %hi(0), %g3 72 ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3
73 sllx %g3, 32, %g3
74cplus_etrap_insn_2:
75 sethi %hi(0), %g2
76 or %g3, %g2, %g3
77 stxa %g3, [%l4] ASI_DMMU 73 stxa %g3, [%l4] ASI_DMMU
78 flush %l6 74 flush %l6
79 wr %g0, ASI_AIUS, %asi 75 wr %g0, ASI_AIUS, %asi
@@ -215,12 +211,8 @@ scetrap: rdpr %pil, %g2
215 mov PRIMARY_CONTEXT, %l4 211 mov PRIMARY_CONTEXT, %l4
216 wrpr %g3, 0, %otherwin 212 wrpr %g3, 0, %otherwin
217 wrpr %g2, 0, %wstate 213 wrpr %g2, 0, %wstate
218cplus_etrap_insn_3: 214 sethi %hi(sparc64_kern_pri_context), %g2
219 sethi %hi(0), %g3 215 ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3
220 sllx %g3, 32, %g3
221cplus_etrap_insn_4:
222 sethi %hi(0), %g2
223 or %g3, %g2, %g3
224 stxa %g3, [%l4] ASI_DMMU 216 stxa %g3, [%l4] ASI_DMMU
225 flush %l6 217 flush %l6
226 218
@@ -264,38 +256,3 @@ cplus_etrap_insn_4:
264 256
265#undef TASK_REGOFF 257#undef TASK_REGOFF
266#undef ETRAP_PSTATE1 258#undef ETRAP_PSTATE1
267
268cplus_einsn_1:
269 sethi %uhi(CTX_CHEETAH_PLUS_NUC), %g3
270cplus_einsn_2:
271 sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2
272
273 .globl cheetah_plus_patch_etrap
274cheetah_plus_patch_etrap:
275 /* We configure the dTLB512_0 for 4MB pages and the
276 * dTLB512_1 for 8K pages when in context zero.
277 */
278 sethi %hi(cplus_einsn_1), %o0
279 sethi %hi(cplus_etrap_insn_1), %o2
280 lduw [%o0 + %lo(cplus_einsn_1)], %o1
281 or %o2, %lo(cplus_etrap_insn_1), %o2
282 stw %o1, [%o2]
283 flush %o2
284 sethi %hi(cplus_etrap_insn_3), %o2
285 or %o2, %lo(cplus_etrap_insn_3), %o2
286 stw %o1, [%o2]
287 flush %o2
288
289 sethi %hi(cplus_einsn_2), %o0
290 sethi %hi(cplus_etrap_insn_2), %o2
291 lduw [%o0 + %lo(cplus_einsn_2)], %o1
292 or %o2, %lo(cplus_etrap_insn_2), %o2
293 stw %o1, [%o2]
294 flush %o2
295 sethi %hi(cplus_etrap_insn_4), %o2
296 or %o2, %lo(cplus_etrap_insn_4), %o2
297 stw %o1, [%o2]
298 flush %o2
299
300 retl
301 nop
diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S
index 89406f9649a9..24340496cdd3 100644
--- a/arch/sparc64/kernel/head.S
+++ b/arch/sparc64/kernel/head.S
@@ -325,23 +325,7 @@ cheetah_tlb_fixup:
3251: sethi %hi(tlb_type), %g1 3251: sethi %hi(tlb_type), %g1
326 stw %g2, [%g1 + %lo(tlb_type)] 326 stw %g2, [%g1 + %lo(tlb_type)]
327 327
328 BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,1f) 328 /* Patch copy/page operations to cheetah optimized versions. */
329 ba,pt %xcc, 2f
330 nop
331
3321: /* Patch context register writes to support nucleus page
333 * size correctly.
334 */
335 call cheetah_plus_patch_etrap
336 nop
337 call cheetah_plus_patch_rtrap
338 nop
339 call cheetah_plus_patch_fpdis
340 nop
341 call cheetah_plus_patch_winfixup
342 nop
343
3442: /* Patch copy/page operations to cheetah optimized versions. */
345 call cheetah_patch_copyops 329 call cheetah_patch_copyops
346 nop 330 nop
347 call cheetah_patch_copy_page 331 call cheetah_patch_copy_page
@@ -484,20 +468,13 @@ spitfire_vpte_base:
484 call prom_set_trap_table 468 call prom_set_trap_table
485 sethi %hi(sparc64_ttable_tl0), %o0 469 sethi %hi(sparc64_ttable_tl0), %o0
486 470
487 BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g2,g3,1f) 471 /* Start using proper page size encodings in ctx register. */
488 ba,pt %xcc, 2f 472 sethi %hi(sparc64_kern_pri_context), %g3
489 nop 473 ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
490
4911: /* Start using proper page size encodings in ctx register. */
492 sethi %uhi(CTX_CHEETAH_PLUS_NUC), %g3
493 mov PRIMARY_CONTEXT, %g1 474 mov PRIMARY_CONTEXT, %g1
494 sllx %g3, 32, %g3 475 stxa %g2, [%g1] ASI_DMMU
495 sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2
496 or %g3, %g2, %g3
497 stxa %g3, [%g1] ASI_DMMU
498 membar #Sync 476 membar #Sync
499 477
5002:
501 rdpr %pstate, %o1 478 rdpr %pstate, %o1
502 or %o1, PSTATE_IE, %o1 479 or %o1, PSTATE_IE, %o1
503 wrpr %o1, 0, %pstate 480 wrpr %o1, 0, %pstate
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index fafd227735fa..ecfb42a69a44 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -256,9 +256,8 @@ rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
256 brnz,pn %l3, kern_rtt 256 brnz,pn %l3, kern_rtt
257 mov PRIMARY_CONTEXT, %l7 257 mov PRIMARY_CONTEXT, %l7
258 ldxa [%l7 + %l7] ASI_DMMU, %l0 258 ldxa [%l7 + %l7] ASI_DMMU, %l0
259cplus_rtrap_insn_1: 259 sethi %hi(sparc64_kern_pri_nuc_bits), %l1
260 sethi %hi(0), %l1 260 ldx [%l1 + %lo(sparc64_kern_pri_nuc_bits)], %l1
261 sllx %l1, 32, %l1
262 or %l0, %l1, %l0 261 or %l0, %l1, %l0
263 stxa %l0, [%l7] ASI_DMMU 262 stxa %l0, [%l7] ASI_DMMU
264 flush %g6 263 flush %g6
@@ -345,21 +344,3 @@ kern_fpucheck: ldub [%g6 + TI_FPDEPTH], %l5
345 wr %g0, FPRS_DU, %fprs 344 wr %g0, FPRS_DU, %fprs
346 ba,pt %xcc, rt_continue 345 ba,pt %xcc, rt_continue
347 stb %l5, [%g6 + TI_FPDEPTH] 346 stb %l5, [%g6 + TI_FPDEPTH]
348
349cplus_rinsn_1:
350 sethi %uhi(CTX_CHEETAH_PLUS_NUC), %l1
351
352 .globl cheetah_plus_patch_rtrap
353cheetah_plus_patch_rtrap:
354 /* We configure the dTLB512_0 for 4MB pages and the
355 * dTLB512_1 for 8K pages when in context zero.
356 */
357 sethi %hi(cplus_rinsn_1), %o0
358 sethi %hi(cplus_rtrap_insn_1), %o2
359 lduw [%o0 + %lo(cplus_rinsn_1)], %o1
360 or %o2, %lo(cplus_rtrap_insn_1), %o2
361 stw %o1, [%o2]
362 flush %o2
363
364 retl
365 nop
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index 4c9c8f241748..c1f34237cdf2 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -187,17 +187,13 @@ int prom_callback(long *args)
187 } 187 }
188 188
189 if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) { 189 if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) {
190 unsigned long kernel_pctx = 0; 190 extern unsigned long sparc64_kern_pri_context;
191
192 if (tlb_type == cheetah_plus)
193 kernel_pctx |= (CTX_CHEETAH_PLUS_NUC |
194 CTX_CHEETAH_PLUS_CTX0);
195 191
196 /* Spitfire Errata #32 workaround */ 192 /* Spitfire Errata #32 workaround */
197 __asm__ __volatile__("stxa %0, [%1] %2\n\t" 193 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
198 "flush %%g6" 194 "flush %%g6"
199 : /* No outputs */ 195 : /* No outputs */
200 : "r" (kernel_pctx), 196 : "r" (sparc64_kern_pri_context),
201 "r" (PRIMARY_CONTEXT), 197 "r" (PRIMARY_CONTEXT),
202 "i" (ASI_DMMU)); 198 "i" (ASI_DMMU));
203 199
diff --git a/arch/sparc64/kernel/trampoline.S b/arch/sparc64/kernel/trampoline.S
index 89f2fcfcd662..9478551cb020 100644
--- a/arch/sparc64/kernel/trampoline.S
+++ b/arch/sparc64/kernel/trampoline.S
@@ -336,20 +336,13 @@ do_unlock:
336 call init_irqwork_curcpu 336 call init_irqwork_curcpu
337 nop 337 nop
338 338
339 BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g2,g3,1f) 339 /* Start using proper page size encodings in ctx register. */
340 ba,pt %xcc, 2f 340 sethi %hi(sparc64_kern_pri_context), %g3
341 nop 341 ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
342
3431: /* Start using proper page size encodings in ctx register. */
344 sethi %uhi(CTX_CHEETAH_PLUS_NUC), %g3
345 mov PRIMARY_CONTEXT, %g1 342 mov PRIMARY_CONTEXT, %g1
346 sllx %g3, 32, %g3 343 stxa %g2, [%g1] ASI_DMMU
347 sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2
348 or %g3, %g2, %g3
349 stxa %g3, [%g1] ASI_DMMU
350 membar #Sync 344 membar #Sync
351 345
3522:
353 rdpr %pstate, %o1 346 rdpr %pstate, %o1
354 or %o1, PSTATE_IE, %o1 347 or %o1, PSTATE_IE, %o1
355 wrpr %o1, 0, %pstate 348 wrpr %o1, 0, %pstate
diff --git a/arch/sparc64/kernel/winfixup.S b/arch/sparc64/kernel/winfixup.S
index 99c809a1e5ac..39160926267b 100644
--- a/arch/sparc64/kernel/winfixup.S
+++ b/arch/sparc64/kernel/winfixup.S
@@ -16,23 +16,14 @@
16 .text 16 .text
17 17
18set_pcontext: 18set_pcontext:
19cplus_winfixup_insn_1: 19 sethi %hi(sparc64_kern_pri_context), %l1
20 sethi %hi(0), %l1 20 ldx [%l1 + %lo(sparc64_kern_pri_context)], %l1
21 mov PRIMARY_CONTEXT, %g1 21 mov PRIMARY_CONTEXT, %g1
22 sllx %l1, 32, %l1
23cplus_winfixup_insn_2:
24 sethi %hi(0), %g2
25 or %l1, %g2, %l1
26 stxa %l1, [%g1] ASI_DMMU 22 stxa %l1, [%g1] ASI_DMMU
27 flush %g6 23 flush %g6
28 retl 24 retl
29 nop 25 nop
30 26
31cplus_wfinsn_1:
32 sethi %uhi(CTX_CHEETAH_PLUS_NUC), %l1
33cplus_wfinsn_2:
34 sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2
35
36 .align 32 27 .align 32
37 28
38 /* Here are the rules, pay attention. 29 /* Here are the rules, pay attention.
@@ -395,23 +386,3 @@ window_dax_from_user_common:
395 add %sp, PTREGS_OFF, %o0 386 add %sp, PTREGS_OFF, %o0
396 ba,pt %xcc, rtrap 387 ba,pt %xcc, rtrap
397 clr %l6 388 clr %l6
398
399
400 .globl cheetah_plus_patch_winfixup
401cheetah_plus_patch_winfixup:
402 sethi %hi(cplus_wfinsn_1), %o0
403 sethi %hi(cplus_winfixup_insn_1), %o2
404 lduw [%o0 + %lo(cplus_wfinsn_1)], %o1
405 or %o2, %lo(cplus_winfixup_insn_1), %o2
406 stw %o1, [%o2]
407 flush %o2
408
409 sethi %hi(cplus_wfinsn_2), %o0
410 sethi %hi(cplus_winfixup_insn_2), %o2
411 lduw [%o0 + %lo(cplus_wfinsn_2)], %o1
412 or %o2, %lo(cplus_winfixup_insn_2), %o2
413 stw %o1, [%o2]
414 flush %o2
415
416 retl
417 nop
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