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-rw-r--r--arch/sparc64/kernel/entry.S309
1 files changed, 173 insertions, 136 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index cecdc0a7521..3e0badb820c 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -927,139 +927,6 @@ __spitfire_insn_access_exception:
ba,pt %xcc, rtrap
clr %l6
- /* Capture I/D/E-cache state into per-cpu error scoreboard.
- *
- * %g1: (TL>=0) ? 1 : 0
- * %g2: scratch
- * %g3: scratch
- * %g4: AFSR
- * %g5: AFAR
- * %g6: current thread ptr
- * %g7: scratch
- */
-#define CHEETAH_LOG_ERROR \
- /* Put "TL1" software bit into AFSR. */ \
- and %g1, 0x1, %g1; \
- sllx %g1, 63, %g2; \
- or %g4, %g2, %g4; \
- /* Get log entry pointer for this cpu at this trap level. */ \
- BRANCH_IF_JALAPENO(g2,g3,50f) \
- ldxa [%g0] ASI_SAFARI_CONFIG, %g2; \
- srlx %g2, 17, %g2; \
- ba,pt %xcc, 60f; \
- and %g2, 0x3ff, %g2; \
-50: ldxa [%g0] ASI_JBUS_CONFIG, %g2; \
- srlx %g2, 17, %g2; \
- and %g2, 0x1f, %g2; \
-60: sllx %g2, 9, %g2; \
- sethi %hi(cheetah_error_log), %g3; \
- ldx [%g3 + %lo(cheetah_error_log)], %g3; \
- brz,pn %g3, 80f; \
- nop; \
- add %g3, %g2, %g3; \
- sllx %g1, 8, %g1; \
- add %g3, %g1, %g1; \
- /* %g1 holds pointer to the top of the logging scoreboard */ \
- ldx [%g1 + 0x0], %g7; \
- cmp %g7, -1; \
- bne,pn %xcc, 80f; \
- nop; \
- stx %g4, [%g1 + 0x0]; \
- stx %g5, [%g1 + 0x8]; \
- add %g1, 0x10, %g1; \
- /* %g1 now points to D-cache logging area */ \
- set 0x3ff8, %g2; /* DC_addr mask */ \
- and %g5, %g2, %g2; /* DC_addr bits of AFAR */ \
- srlx %g5, 12, %g3; \
- or %g3, 1, %g3; /* PHYS tag + valid */ \
-10: ldxa [%g2] ASI_DCACHE_TAG, %g7; \
- cmp %g3, %g7; /* TAG match? */ \
- bne,pt %xcc, 13f; \
- nop; \
- /* Yep, what we want, capture state. */ \
- stx %g2, [%g1 + 0x20]; \
- stx %g7, [%g1 + 0x28]; \
- /* A membar Sync is required before and after utag access. */ \
- membar #Sync; \
- ldxa [%g2] ASI_DCACHE_UTAG, %g7; \
- membar #Sync; \
- stx %g7, [%g1 + 0x30]; \
- ldxa [%g2] ASI_DCACHE_SNOOP_TAG, %g7; \
- stx %g7, [%g1 + 0x38]; \
- clr %g3; \
-12: ldxa [%g2 + %g3] ASI_DCACHE_DATA, %g7; \
- stx %g7, [%g1]; \
- add %g3, (1 << 5), %g3; \
- cmp %g3, (4 << 5); \
- bl,pt %xcc, 12b; \
- add %g1, 0x8, %g1; \
- ba,pt %xcc, 20f; \
- add %g1, 0x20, %g1; \
-13: sethi %hi(1 << 14), %g7; \
- add %g2, %g7, %g2; \
- srlx %g2, 14, %g7; \
- cmp %g7, 4; \
- bl,pt %xcc, 10b; \
- nop; \
- add %g1, 0x40, %g1; \
-20: /* %g1 now points to I-cache logging area */ \
- set 0x1fe0, %g2; /* IC_addr mask */ \
- and %g5, %g2, %g2; /* IC_addr bits of AFAR */ \
- sllx %g2, 1, %g2; /* IC_addr[13:6]==VA[12:5] */ \
- srlx %g5, (13 - 8), %g3; /* Make PTAG */ \
- andn %g3, 0xff, %g3; /* Mask off undefined bits */ \
-21: ldxa [%g2] ASI_IC_TAG, %g7; \
- andn %g7, 0xff, %g7; \
- cmp %g3, %g7; \
- bne,pt %xcc, 23f; \
- nop; \
- /* Yep, what we want, capture state. */ \
- stx %g2, [%g1 + 0x40]; \
- stx %g7, [%g1 + 0x48]; \
- add %g2, (1 << 3), %g2; \
- ldxa [%g2] ASI_IC_TAG, %g7; \
- add %g2, (1 << 3), %g2; \
- stx %g7, [%g1 + 0x50]; \
- ldxa [%g2] ASI_IC_TAG, %g7; \
- add %g2, (1 << 3), %g2; \
- stx %g7, [%g1 + 0x60]; \
- ldxa [%g2] ASI_IC_TAG, %g7; \
- stx %g7, [%g1 + 0x68]; \
- sub %g2, (3 << 3), %g2; \
- ldxa [%g2] ASI_IC_STAG, %g7; \
- stx %g7, [%g1 + 0x58]; \
- clr %g3; \
- srlx %g2, 2, %g2; \
-22: ldxa [%g2 + %g3] ASI_IC_INSTR, %g7; \
- stx %g7, [%g1]; \
- add %g3, (1 << 3), %g3; \
- cmp %g3, (8 << 3); \
- bl,pt %xcc, 22b; \
- add %g1, 0x8, %g1; \
- ba,pt %xcc, 30f; \
- add %g1, 0x30, %g1; \
-23: sethi %hi(1 << 14), %g7; \
- add %g2, %g7, %g2; \
- srlx %g2, 14, %g7; \
- cmp %g7, 4; \
- bl,pt %xcc, 21b; \
- nop; \
- add %g1, 0x70, %g1; \
-30: /* %g1 now points to E-cache logging area */ \
- andn %g5, (32 - 1), %g2; /* E-cache subblock */ \
- stx %g2, [%g1 + 0x20]; \
- ldxa [%g2] ASI_EC_TAG_DATA, %g7; \
- stx %g7, [%g1 + 0x28]; \
- ldxa [%g2] ASI_EC_R, %g0; \
- clr %g3; \
-31: ldxa [%g3] ASI_EC_DATA, %g7; \
- stx %g7, [%g1 + %g3]; \
- add %g3, 0x8, %g3; \
- cmp %g3, 0x20; \
- bl,pt %xcc, 31b; \
- nop; \
-80: /* DONE */
-
/* These get patched into the trap table at boot time
* once we know we have a cheetah processor.
*/
@@ -1296,6 +1163,170 @@ dcpe_icpe_tl1_common:
membar #Sync
retry
+ /* Capture I/D/E-cache state into per-cpu error scoreboard.
+ *
+ * %g1: (TL>=0) ? 1 : 0
+ * %g2: scratch
+ * %g3: scratch
+ * %g4: AFSR
+ * %g5: AFAR
+ * %g6: current thread ptr
+ * %g7: scratch
+ */
+__cheetah_log_error:
+ /* Put "TL1" software bit into AFSR. */
+ and %g1, 0x1, %g1
+ sllx %g1, 63, %g2
+ or %g4, %g2, %g4
+
+ /* Get log entry pointer for this cpu at this trap level. */
+ BRANCH_IF_JALAPENO(g2,g3,50f)
+ ldxa [%g0] ASI_SAFARI_CONFIG, %g2
+ srlx %g2, 17, %g2
+ ba,pt %xcc, 60f
+ and %g2, 0x3ff, %g2
+
+50: ldxa [%g0] ASI_JBUS_CONFIG, %g2
+ srlx %g2, 17, %g2
+ and %g2, 0x1f, %g2
+
+60: sllx %g2, 9, %g2
+ sethi %hi(cheetah_error_log), %g3
+ ldx [%g3 + %lo(cheetah_error_log)], %g3
+ brz,pn %g3, 80f
+ nop
+
+ add %g3, %g2, %g3
+ sllx %g1, 8, %g1
+ add %g3, %g1, %g1
+
+ /* %g1 holds pointer to the top of the logging scoreboard */
+ ldx [%g1 + 0x0], %g7
+ cmp %g7, -1
+ bne,pn %xcc, 80f
+ nop
+
+ stx %g4, [%g1 + 0x0]
+ stx %g5, [%g1 + 0x8]
+ add %g1, 0x10, %g1
+
+ /* %g1 now points to D-cache logging area */
+ set 0x3ff8, %g2 /* DC_addr mask */
+ and %g5, %g2, %g2 /* DC_addr bits of AFAR */
+ srlx %g5, 12, %g3
+ or %g3, 1, %g3 /* PHYS tag + valid */
+
+10: ldxa [%g2] ASI_DCACHE_TAG, %g7
+ cmp %g3, %g7 /* TAG match? */
+ bne,pt %xcc, 13f
+ nop
+
+ /* Yep, what we want, capture state. */
+ stx %g2, [%g1 + 0x20]
+ stx %g7, [%g1 + 0x28]
+
+ /* A membar Sync is required before and after utag access. */
+ membar #Sync
+ ldxa [%g2] ASI_DCACHE_UTAG, %g7
+ membar #Sync
+ stx %g7, [%g1 + 0x30]
+ ldxa [%g2] ASI_DCACHE_SNOOP_TAG, %g7
+ stx %g7, [%g1 + 0x38]
+ clr %g3
+
+12: ldxa [%g2 + %g3] ASI_DCACHE_DATA, %g7
+ stx %g7, [%g1]
+ add %g3, (1 << 5), %g3
+ cmp %g3, (4 << 5)
+ bl,pt %xcc, 12b
+ add %g1, 0x8, %g1
+
+ ba,pt %xcc, 20f
+ add %g1, 0x20, %g1
+
+13: sethi %hi(1 << 14), %g7
+ add %g2, %g7, %g2
+ srlx %g2, 14, %g7
+ cmp %g7, 4
+ bl,pt %xcc, 10b
+ nop
+
+ add %g1, 0x40, %g1
+
+ /* %g1 now points to I-cache logging area */
+20: set 0x1fe0, %g2 /* IC_addr mask */
+ and %g5, %g2, %g2 /* IC_addr bits of AFAR */
+ sllx %g2, 1, %g2 /* IC_addr[13:6]==VA[12:5] */
+ srlx %g5, (13 - 8), %g3 /* Make PTAG */
+ andn %g3, 0xff, %g3 /* Mask off undefined bits */
+
+21: ldxa [%g2] ASI_IC_TAG, %g7
+ andn %g7, 0xff, %g7
+ cmp %g3, %g7
+ bne,pt %xcc, 23f
+ nop
+
+ /* Yep, what we want, capture state. */
+ stx %g2, [%g1 + 0x40]
+ stx %g7, [%g1 + 0x48]
+ add %g2, (1 << 3), %g2
+ ldxa [%g2] ASI_IC_TAG, %g7
+ add %g2, (1 << 3), %g2
+ stx %g7, [%g1 + 0x50]
+ ldxa [%g2] ASI_IC_TAG, %g7
+ add %g2, (1 << 3), %g2
+ stx %g7, [%g1 + 0x60]
+ ldxa [%g2] ASI_IC_TAG, %g7
+ stx %g7, [%g1 + 0x68]
+ sub %g2, (3 << 3), %g2
+ ldxa [%g2] ASI_IC_STAG, %g7
+ stx %g7, [%g1 + 0x58]
+ clr %g3
+ srlx %g2, 2, %g2
+
+22: ldxa [%g2 + %g3] ASI_IC_INSTR, %g7
+ stx %g7, [%g1]
+ add %g3, (1 << 3), %g3
+ cmp %g3, (8 << 3)
+ bl,pt %xcc, 22b
+ add %g1, 0x8, %g1
+
+ ba,pt %xcc, 30f
+ add %g1, 0x30, %g1
+
+23: sethi %hi(1 << 14), %g7
+ add %g2, %g7, %g2
+ srlx %g2, 14, %g7
+ cmp %g7, 4
+ bl,pt %xcc, 21b
+ nop
+
+ add %g1, 0x70, %g1
+
+ /* %g1 now points to E-cache logging area */
+30: andn %g5, (32 - 1), %g2
+ stx %g2, [%g1 + 0x20]
+ ldxa [%g2] ASI_EC_TAG_DATA, %g7
+ stx %g7, [%g1 + 0x28]
+ ldxa [%g2] ASI_EC_R, %g0
+ clr %g3
+
+31: ldxa [%g3] ASI_EC_DATA, %g7
+ stx %g7, [%g1 + %g3]
+ add %g3, 0x8, %g3
+ cmp %g3, 0x20
+
+ bl,pt %xcc, 31b
+ nop
+80:
+ rdpr %tt, %g2
+ cmp %g2, 0x70
+ be c_fast_ecc
+ cmp %g2, 0x63
+ be c_cee
+ nop
+ ba,pt %xcc, c_deferred
+
/* Cheetah FECC trap handling, we get here from tl{0,1}_fecc
* in the trap table. That code has done a memory barrier
* and has disabled both the I-cache and D-cache in the DCU
@@ -1321,8 +1352,10 @@ cheetah_fast_ecc:
stxa %g4, [%g0] ASI_AFSR
membar #Sync
- CHEETAH_LOG_ERROR
+ ba,pt %xcc, __cheetah_log_error
+ nop
+c_fast_ecc:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
@@ -1347,8 +1380,10 @@ cheetah_cee:
stxa %g4, [%g0] ASI_AFSR
membar #Sync
- CHEETAH_LOG_ERROR
+ ba,pt %xcc, __cheetah_log_error
+ nop
+c_cee:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
@@ -1373,8 +1408,10 @@ cheetah_deferred_trap:
stxa %g4, [%g0] ASI_AFSR
membar #Sync
- CHEETAH_LOG_ERROR
+ ba,pt %xcc, __cheetah_log_error
+ nop
+c_deferred:
rdpr %pil, %g2
wrpr %g0, 15, %pil
ba,pt %xcc, etrap_irq
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 05:21:05 +0000