mirror of
https://github.com/edk2-porting/linux-next.git
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a88b5ba8bd
o Move all files from sparc64/kernel/ to sparc/kernel - rename as appropriate o Update sparc/Makefile to the changes o Update sparc/kernel/Makefile to include the sparc64 files NOTE: This commit changes link order on sparc64! Link order had to change for either of sparc32 and sparc64. And assuming sparc64 see more testing than sparc32 change link order on sparc64 where issues will be caught faster. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
580 lines
15 KiB
ArmAsm
580 lines
15 KiB
ArmAsm
/* These get patched into the trap table at boot time
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* once we know we have a cheetah processor.
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*/
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.globl cheetah_fecc_trap_vector
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.type cheetah_fecc_trap_vector,#function
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cheetah_fecc_trap_vector:
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membar #Sync
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ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
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andn %g1, DCU_DC | DCU_IC, %g1
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stxa %g1, [%g0] ASI_DCU_CONTROL_REG
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membar #Sync
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sethi %hi(cheetah_fast_ecc), %g2
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jmpl %g2 + %lo(cheetah_fast_ecc), %g0
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mov 0, %g1
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.size cheetah_fecc_trap_vector,.-cheetah_fecc_trap_vector
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.globl cheetah_fecc_trap_vector_tl1
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.type cheetah_fecc_trap_vector_tl1,#function
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cheetah_fecc_trap_vector_tl1:
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membar #Sync
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ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
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andn %g1, DCU_DC | DCU_IC, %g1
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stxa %g1, [%g0] ASI_DCU_CONTROL_REG
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membar #Sync
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sethi %hi(cheetah_fast_ecc), %g2
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jmpl %g2 + %lo(cheetah_fast_ecc), %g0
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mov 1, %g1
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.size cheetah_fecc_trap_vector_tl1,.-cheetah_fecc_trap_vector_tl1
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.globl cheetah_cee_trap_vector
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.type cheetah_cee_trap_vector,#function
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cheetah_cee_trap_vector:
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membar #Sync
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ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
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andn %g1, DCU_IC, %g1
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stxa %g1, [%g0] ASI_DCU_CONTROL_REG
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membar #Sync
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sethi %hi(cheetah_cee), %g2
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jmpl %g2 + %lo(cheetah_cee), %g0
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mov 0, %g1
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.size cheetah_cee_trap_vector,.-cheetah_cee_trap_vector
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.globl cheetah_cee_trap_vector_tl1
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.type cheetah_cee_trap_vector_tl1,#function
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cheetah_cee_trap_vector_tl1:
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membar #Sync
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ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
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andn %g1, DCU_IC, %g1
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stxa %g1, [%g0] ASI_DCU_CONTROL_REG
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membar #Sync
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sethi %hi(cheetah_cee), %g2
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jmpl %g2 + %lo(cheetah_cee), %g0
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mov 1, %g1
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.size cheetah_cee_trap_vector_tl1,.-cheetah_cee_trap_vector_tl1
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.globl cheetah_deferred_trap_vector
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.type cheetah_deferred_trap_vector,#function
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cheetah_deferred_trap_vector:
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membar #Sync
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ldxa [%g0] ASI_DCU_CONTROL_REG, %g1;
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andn %g1, DCU_DC | DCU_IC, %g1;
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stxa %g1, [%g0] ASI_DCU_CONTROL_REG;
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membar #Sync;
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sethi %hi(cheetah_deferred_trap), %g2
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jmpl %g2 + %lo(cheetah_deferred_trap), %g0
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mov 0, %g1
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.size cheetah_deferred_trap_vector,.-cheetah_deferred_trap_vector
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.globl cheetah_deferred_trap_vector_tl1
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.type cheetah_deferred_trap_vector_tl1,#function
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cheetah_deferred_trap_vector_tl1:
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membar #Sync;
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ldxa [%g0] ASI_DCU_CONTROL_REG, %g1;
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andn %g1, DCU_DC | DCU_IC, %g1;
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stxa %g1, [%g0] ASI_DCU_CONTROL_REG;
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membar #Sync;
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sethi %hi(cheetah_deferred_trap), %g2
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jmpl %g2 + %lo(cheetah_deferred_trap), %g0
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mov 1, %g1
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.size cheetah_deferred_trap_vector_tl1,.-cheetah_deferred_trap_vector_tl1
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/* Cheetah+ specific traps. These are for the new I/D cache parity
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* error traps. The first argument to cheetah_plus_parity_handler
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* is encoded as follows:
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*
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* Bit0: 0=dcache,1=icache
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* Bit1: 0=recoverable,1=unrecoverable
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*/
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.globl cheetah_plus_dcpe_trap_vector
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.type cheetah_plus_dcpe_trap_vector,#function
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cheetah_plus_dcpe_trap_vector:
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membar #Sync
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sethi %hi(do_cheetah_plus_data_parity), %g7
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jmpl %g7 + %lo(do_cheetah_plus_data_parity), %g0
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nop
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nop
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nop
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nop
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nop
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.size cheetah_plus_dcpe_trap_vector,.-cheetah_plus_dcpe_trap_vector
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.type do_cheetah_plus_data_parity,#function
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do_cheetah_plus_data_parity:
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rdpr %pil, %g2
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wrpr %g0, PIL_NORMAL_MAX, %pil
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ba,pt %xcc, etrap_irq
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rd %pc, %g7
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#ifdef CONFIG_TRACE_IRQFLAGS
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call trace_hardirqs_off
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nop
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#endif
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mov 0x0, %o0
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call cheetah_plus_parity_error
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add %sp, PTREGS_OFF, %o1
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ba,a,pt %xcc, rtrap_irq
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.size do_cheetah_plus_data_parity,.-do_cheetah_plus_data_parity
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.globl cheetah_plus_dcpe_trap_vector_tl1
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.type cheetah_plus_dcpe_trap_vector_tl1,#function
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cheetah_plus_dcpe_trap_vector_tl1:
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membar #Sync
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wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
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sethi %hi(do_dcpe_tl1), %g3
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jmpl %g3 + %lo(do_dcpe_tl1), %g0
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nop
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nop
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nop
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nop
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.size cheetah_plus_dcpe_trap_vector_tl1,.-cheetah_plus_dcpe_trap_vector_tl1
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.globl cheetah_plus_icpe_trap_vector
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.type cheetah_plus_icpe_trap_vector,#function
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cheetah_plus_icpe_trap_vector:
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membar #Sync
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sethi %hi(do_cheetah_plus_insn_parity), %g7
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jmpl %g7 + %lo(do_cheetah_plus_insn_parity), %g0
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nop
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nop
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nop
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nop
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nop
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.size cheetah_plus_icpe_trap_vector,.-cheetah_plus_icpe_trap_vector
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.type do_cheetah_plus_insn_parity,#function
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do_cheetah_plus_insn_parity:
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rdpr %pil, %g2
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wrpr %g0, PIL_NORMAL_MAX, %pil
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ba,pt %xcc, etrap_irq
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rd %pc, %g7
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#ifdef CONFIG_TRACE_IRQFLAGS
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call trace_hardirqs_off
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nop
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#endif
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mov 0x1, %o0
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call cheetah_plus_parity_error
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add %sp, PTREGS_OFF, %o1
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ba,a,pt %xcc, rtrap_irq
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.size do_cheetah_plus_insn_parity,.-do_cheetah_plus_insn_parity
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.globl cheetah_plus_icpe_trap_vector_tl1
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.type cheetah_plus_icpe_trap_vector_tl1,#function
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cheetah_plus_icpe_trap_vector_tl1:
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membar #Sync
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wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
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sethi %hi(do_icpe_tl1), %g3
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jmpl %g3 + %lo(do_icpe_tl1), %g0
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nop
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nop
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nop
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nop
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.size cheetah_plus_icpe_trap_vector_tl1,.-cheetah_plus_icpe_trap_vector_tl1
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/* If we take one of these traps when tl >= 1, then we
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* jump to interrupt globals. If some trap level above us
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* was also using interrupt globals, we cannot recover.
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* We may use all interrupt global registers except %g6.
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*/
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.globl do_dcpe_tl1
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.type do_dcpe_tl1,#function
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do_dcpe_tl1:
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rdpr %tl, %g1 ! Save original trap level
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mov 1, %g2 ! Setup TSTATE checking loop
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sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit
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1: wrpr %g2, %tl ! Set trap level to check
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rdpr %tstate, %g4 ! Read TSTATE for this level
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andcc %g4, %g3, %g0 ! Interrupt globals in use?
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bne,a,pn %xcc, do_dcpe_tl1_fatal ! Yep, irrecoverable
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wrpr %g1, %tl ! Restore original trap level
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add %g2, 1, %g2 ! Next trap level
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cmp %g2, %g1 ! Hit them all yet?
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ble,pt %icc, 1b ! Not yet
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nop
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wrpr %g1, %tl ! Restore original trap level
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do_dcpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
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sethi %hi(dcache_parity_tl1_occurred), %g2
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lduw [%g2 + %lo(dcache_parity_tl1_occurred)], %g1
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add %g1, 1, %g1
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stw %g1, [%g2 + %lo(dcache_parity_tl1_occurred)]
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/* Reset D-cache parity */
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sethi %hi(1 << 16), %g1 ! D-cache size
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mov (1 << 5), %g2 ! D-cache line size
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sub %g1, %g2, %g1 ! Move down 1 cacheline
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1: srl %g1, 14, %g3 ! Compute UTAG
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membar #Sync
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stxa %g3, [%g1] ASI_DCACHE_UTAG
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membar #Sync
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sub %g2, 8, %g3 ! 64-bit data word within line
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2: membar #Sync
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stxa %g0, [%g1 + %g3] ASI_DCACHE_DATA
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membar #Sync
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subcc %g3, 8, %g3 ! Next 64-bit data word
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bge,pt %icc, 2b
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nop
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subcc %g1, %g2, %g1 ! Next cacheline
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bge,pt %icc, 1b
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nop
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ba,pt %xcc, dcpe_icpe_tl1_common
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nop
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do_dcpe_tl1_fatal:
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sethi %hi(1f), %g7
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ba,pt %xcc, etraptl1
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1: or %g7, %lo(1b), %g7
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mov 0x2, %o0
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call cheetah_plus_parity_error
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add %sp, PTREGS_OFF, %o1
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ba,pt %xcc, rtrap
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nop
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.size do_dcpe_tl1,.-do_dcpe_tl1
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.globl do_icpe_tl1
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.type do_icpe_tl1,#function
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do_icpe_tl1:
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rdpr %tl, %g1 ! Save original trap level
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mov 1, %g2 ! Setup TSTATE checking loop
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sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit
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1: wrpr %g2, %tl ! Set trap level to check
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rdpr %tstate, %g4 ! Read TSTATE for this level
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andcc %g4, %g3, %g0 ! Interrupt globals in use?
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bne,a,pn %xcc, do_icpe_tl1_fatal ! Yep, irrecoverable
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wrpr %g1, %tl ! Restore original trap level
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add %g2, 1, %g2 ! Next trap level
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cmp %g2, %g1 ! Hit them all yet?
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ble,pt %icc, 1b ! Not yet
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nop
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wrpr %g1, %tl ! Restore original trap level
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do_icpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
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sethi %hi(icache_parity_tl1_occurred), %g2
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lduw [%g2 + %lo(icache_parity_tl1_occurred)], %g1
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add %g1, 1, %g1
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stw %g1, [%g2 + %lo(icache_parity_tl1_occurred)]
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/* Flush I-cache */
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sethi %hi(1 << 15), %g1 ! I-cache size
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mov (1 << 5), %g2 ! I-cache line size
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sub %g1, %g2, %g1
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1: or %g1, (2 << 3), %g3
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stxa %g0, [%g3] ASI_IC_TAG
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membar #Sync
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subcc %g1, %g2, %g1
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bge,pt %icc, 1b
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nop
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ba,pt %xcc, dcpe_icpe_tl1_common
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nop
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do_icpe_tl1_fatal:
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sethi %hi(1f), %g7
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ba,pt %xcc, etraptl1
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1: or %g7, %lo(1b), %g7
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mov 0x3, %o0
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call cheetah_plus_parity_error
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add %sp, PTREGS_OFF, %o1
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ba,pt %xcc, rtrap
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nop
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.size do_icpe_tl1,.-do_icpe_tl1
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.type dcpe_icpe_tl1_common,#function
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dcpe_icpe_tl1_common:
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/* Flush D-cache, re-enable D/I caches in DCU and finally
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* retry the trapping instruction.
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*/
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sethi %hi(1 << 16), %g1 ! D-cache size
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mov (1 << 5), %g2 ! D-cache line size
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sub %g1, %g2, %g1
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1: stxa %g0, [%g1] ASI_DCACHE_TAG
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membar #Sync
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subcc %g1, %g2, %g1
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bge,pt %icc, 1b
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nop
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ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
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or %g1, (DCU_DC | DCU_IC), %g1
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stxa %g1, [%g0] ASI_DCU_CONTROL_REG
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membar #Sync
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retry
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.size dcpe_icpe_tl1_common,.-dcpe_icpe_tl1_common
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/* Capture I/D/E-cache state into per-cpu error scoreboard.
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*
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* %g1: (TL>=0) ? 1 : 0
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* %g2: scratch
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* %g3: scratch
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* %g4: AFSR
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* %g5: AFAR
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* %g6: unused, will have current thread ptr after etrap
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* %g7: scratch
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*/
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.type __cheetah_log_error,#function
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__cheetah_log_error:
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/* Put "TL1" software bit into AFSR. */
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and %g1, 0x1, %g1
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sllx %g1, 63, %g2
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or %g4, %g2, %g4
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/* Get log entry pointer for this cpu at this trap level. */
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BRANCH_IF_JALAPENO(g2,g3,50f)
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ldxa [%g0] ASI_SAFARI_CONFIG, %g2
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srlx %g2, 17, %g2
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ba,pt %xcc, 60f
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and %g2, 0x3ff, %g2
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50: ldxa [%g0] ASI_JBUS_CONFIG, %g2
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srlx %g2, 17, %g2
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and %g2, 0x1f, %g2
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60: sllx %g2, 9, %g2
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sethi %hi(cheetah_error_log), %g3
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ldx [%g3 + %lo(cheetah_error_log)], %g3
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brz,pn %g3, 80f
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nop
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add %g3, %g2, %g3
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sllx %g1, 8, %g1
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add %g3, %g1, %g1
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/* %g1 holds pointer to the top of the logging scoreboard */
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ldx [%g1 + 0x0], %g7
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cmp %g7, -1
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bne,pn %xcc, 80f
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nop
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stx %g4, [%g1 + 0x0]
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stx %g5, [%g1 + 0x8]
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add %g1, 0x10, %g1
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/* %g1 now points to D-cache logging area */
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set 0x3ff8, %g2 /* DC_addr mask */
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and %g5, %g2, %g2 /* DC_addr bits of AFAR */
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srlx %g5, 12, %g3
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or %g3, 1, %g3 /* PHYS tag + valid */
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10: ldxa [%g2] ASI_DCACHE_TAG, %g7
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cmp %g3, %g7 /* TAG match? */
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bne,pt %xcc, 13f
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nop
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/* Yep, what we want, capture state. */
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stx %g2, [%g1 + 0x20]
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stx %g7, [%g1 + 0x28]
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/* A membar Sync is required before and after utag access. */
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membar #Sync
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ldxa [%g2] ASI_DCACHE_UTAG, %g7
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membar #Sync
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stx %g7, [%g1 + 0x30]
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ldxa [%g2] ASI_DCACHE_SNOOP_TAG, %g7
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stx %g7, [%g1 + 0x38]
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clr %g3
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12: ldxa [%g2 + %g3] ASI_DCACHE_DATA, %g7
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stx %g7, [%g1]
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add %g3, (1 << 5), %g3
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cmp %g3, (4 << 5)
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bl,pt %xcc, 12b
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add %g1, 0x8, %g1
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ba,pt %xcc, 20f
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add %g1, 0x20, %g1
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13: sethi %hi(1 << 14), %g7
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add %g2, %g7, %g2
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srlx %g2, 14, %g7
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cmp %g7, 4
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bl,pt %xcc, 10b
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nop
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add %g1, 0x40, %g1
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/* %g1 now points to I-cache logging area */
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20: set 0x1fe0, %g2 /* IC_addr mask */
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and %g5, %g2, %g2 /* IC_addr bits of AFAR */
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sllx %g2, 1, %g2 /* IC_addr[13:6]==VA[12:5] */
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srlx %g5, (13 - 8), %g3 /* Make PTAG */
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andn %g3, 0xff, %g3 /* Mask off undefined bits */
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21: ldxa [%g2] ASI_IC_TAG, %g7
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andn %g7, 0xff, %g7
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cmp %g3, %g7
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bne,pt %xcc, 23f
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nop
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/* Yep, what we want, capture state. */
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stx %g2, [%g1 + 0x40]
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stx %g7, [%g1 + 0x48]
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add %g2, (1 << 3), %g2
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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
|
|
.size __cheetah_log_error,.-__cheetah_log_error
|
|
|
|
/* 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
|
|
* control register. The I-cache is disabled so that we may
|
|
* capture the corrupted cache line, and the D-cache is disabled
|
|
* because corrupt data may have been placed there and we don't
|
|
* want to reference it.
|
|
*
|
|
* %g1 is one if this trap occurred at %tl >= 1.
|
|
*
|
|
* Next, we turn off error reporting so that we don't recurse.
|
|
*/
|
|
.globl cheetah_fast_ecc
|
|
.type cheetah_fast_ecc,#function
|
|
cheetah_fast_ecc:
|
|
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
|
|
andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
|
|
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
|
|
membar #Sync
|
|
|
|
/* Fetch and clear AFSR/AFAR */
|
|
ldxa [%g0] ASI_AFSR, %g4
|
|
ldxa [%g0] ASI_AFAR, %g5
|
|
stxa %g4, [%g0] ASI_AFSR
|
|
membar #Sync
|
|
|
|
ba,pt %xcc, __cheetah_log_error
|
|
nop
|
|
.size cheetah_fast_ecc,.-cheetah_fast_ecc
|
|
|
|
.type c_fast_ecc,#function
|
|
c_fast_ecc:
|
|
rdpr %pil, %g2
|
|
wrpr %g0, PIL_NORMAL_MAX, %pil
|
|
ba,pt %xcc, etrap_irq
|
|
rd %pc, %g7
|
|
#ifdef CONFIG_TRACE_IRQFLAGS
|
|
call trace_hardirqs_off
|
|
nop
|
|
#endif
|
|
mov %l4, %o1
|
|
mov %l5, %o2
|
|
call cheetah_fecc_handler
|
|
add %sp, PTREGS_OFF, %o0
|
|
ba,a,pt %xcc, rtrap_irq
|
|
.size c_fast_ecc,.-c_fast_ecc
|
|
|
|
/* Our caller has disabled I-cache and performed membar Sync. */
|
|
.globl cheetah_cee
|
|
.type cheetah_cee,#function
|
|
cheetah_cee:
|
|
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
|
|
andn %g2, ESTATE_ERROR_CEEN, %g2
|
|
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
|
|
membar #Sync
|
|
|
|
/* Fetch and clear AFSR/AFAR */
|
|
ldxa [%g0] ASI_AFSR, %g4
|
|
ldxa [%g0] ASI_AFAR, %g5
|
|
stxa %g4, [%g0] ASI_AFSR
|
|
membar #Sync
|
|
|
|
ba,pt %xcc, __cheetah_log_error
|
|
nop
|
|
.size cheetah_cee,.-cheetah_cee
|
|
|
|
.type c_cee,#function
|
|
c_cee:
|
|
rdpr %pil, %g2
|
|
wrpr %g0, PIL_NORMAL_MAX, %pil
|
|
ba,pt %xcc, etrap_irq
|
|
rd %pc, %g7
|
|
#ifdef CONFIG_TRACE_IRQFLAGS
|
|
call trace_hardirqs_off
|
|
nop
|
|
#endif
|
|
mov %l4, %o1
|
|
mov %l5, %o2
|
|
call cheetah_cee_handler
|
|
add %sp, PTREGS_OFF, %o0
|
|
ba,a,pt %xcc, rtrap_irq
|
|
.size c_cee,.-c_cee
|
|
|
|
/* Our caller has disabled I-cache+D-cache and performed membar Sync. */
|
|
.globl cheetah_deferred_trap
|
|
.type cheetah_deferred_trap,#function
|
|
cheetah_deferred_trap:
|
|
ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
|
|
andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
|
|
stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
|
|
membar #Sync
|
|
|
|
/* Fetch and clear AFSR/AFAR */
|
|
ldxa [%g0] ASI_AFSR, %g4
|
|
ldxa [%g0] ASI_AFAR, %g5
|
|
stxa %g4, [%g0] ASI_AFSR
|
|
membar #Sync
|
|
|
|
ba,pt %xcc, __cheetah_log_error
|
|
nop
|
|
.size cheetah_deferred_trap,.-cheetah_deferred_trap
|
|
|
|
.type c_deferred,#function
|
|
c_deferred:
|
|
rdpr %pil, %g2
|
|
wrpr %g0, PIL_NORMAL_MAX, %pil
|
|
ba,pt %xcc, etrap_irq
|
|
rd %pc, %g7
|
|
#ifdef CONFIG_TRACE_IRQFLAGS
|
|
call trace_hardirqs_off
|
|
nop
|
|
#endif
|
|
mov %l4, %o1
|
|
mov %l5, %o2
|
|
call cheetah_deferred_handler
|
|
add %sp, PTREGS_OFF, %o0
|
|
ba,a,pt %xcc, rtrap_irq
|
|
.size c_deferred,.-c_deferred
|