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[SPARC64]: Revamp Spitfire error trap handling.

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Current uncorrectable error handling was poor enough
that the processor could just loop taking the same
trap over and over again.  Fix things up so that we
at least get a log message and perhaps even some register
state.

In the process, much consolidation became possible,
particularly with the correctable error handler.

Prefix assembler and C function names with "spitfire"
to indicate that these are for Ultra-I/II/IIi/IIe only.

More work is needed to make these routines robust and
featureful to the level of the Ultra-III error handlers.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2005-08-29 12:45:11 -07:00
parent bde4e4ee9f
commit 6c52a96e6c
6 changed files with 453 additions and 280 deletions
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6
arch/sparc64/kernel/winfixup.S
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@@ -318,7 +318,7 @@ fill_fixup_dax:
nop
rdpr %pstate, %l1 ! Prepare to change globals.
mov %g4, %o1 ! Setup args for
mov %g5, %o2 ! final call to data_access_exception.
mov %g5, %o2 ! final call to spitfire_data_access_exception.
andn %l1, PSTATE_MM, %l1 ! We want to be in RMO
mov %g6, %o7 ! Stash away current.
@@ -330,7 +330,7 @@ fill_fixup_dax:
mov TSB_REG, %g1
ldxa [%g1] ASI_IMMU, %g5
#endif
call data_access_exception
call spitfire_data_access_exception
add %sp, PTREGS_OFF, %o0
b,pt %xcc, rtrap
@@ -391,7 +391,7 @@ window_dax_from_user_common:
109: or %g7, %lo(109b), %g7
mov %l4, %o1
mov %l5, %o2
call data_access_exception
call spitfire_data_access_exception
add %sp, PTREGS_OFF, %o0
ba,pt %xcc, rtrap
clr %l6