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[POWERPC] Move the iSeries exception vectors
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out of head_64.S and into platforms/iseries/exception.S

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Stephen Rothwell authored and Paul Mackerras committed Aug 22, 2007
1 parent f9ff0f3 commit dc8f571
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Showing 2 changed files with 136 additions and 136 deletions.
136 changes: 0 additions & 136 deletions arch/powerpc/kernel/head_64.S
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Original file line number Diff line number Diff line change
Expand Up @@ -358,142 +358,6 @@ machine_check_fwnmi:
mtspr SPRN_SPRG1,r13 /* save r13 */
EXCEPTION_PROLOG_PSERIES_FORCE_64BIT(PACA_EXMC, machine_check_common)

#ifdef CONFIG_PPC_ISERIES
/*** ISeries-LPAR interrupt handlers ***/

STD_EXCEPTION_ISERIES(0x200, machine_check, PACA_EXMC)

.globl data_access_iSeries
data_access_iSeries:
mtspr SPRN_SPRG1,r13
BEGIN_FTR_SECTION
mtspr SPRN_SPRG2,r12
mfspr r13,SPRN_DAR
mfspr r12,SPRN_DSISR
srdi r13,r13,60
rlwimi r13,r12,16,0x20
mfcr r12
cmpwi r13,0x2c
beq .do_stab_bolted_iSeries
mtcrf 0x80,r12
mfspr r12,SPRN_SPRG2
END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
EXCEPTION_PROLOG_ISERIES_1(PACA_EXGEN)
EXCEPTION_PROLOG_ISERIES_2
b data_access_common

.do_stab_bolted_iSeries:
mtcrf 0x80,r12
mfspr r12,SPRN_SPRG2
EXCEPTION_PROLOG_ISERIES_1(PACA_EXSLB)
EXCEPTION_PROLOG_ISERIES_2
b .do_stab_bolted

.globl data_access_slb_iSeries
data_access_slb_iSeries:
mtspr SPRN_SPRG1,r13 /* save r13 */
mfspr r13,SPRN_SPRG3 /* get paca address into r13 */
std r3,PACA_EXSLB+EX_R3(r13)
mfspr r3,SPRN_DAR
std r9,PACA_EXSLB+EX_R9(r13)
mfcr r9
#ifdef __DISABLED__
cmpdi r3,0
bge slb_miss_user_iseries
#endif
std r10,PACA_EXSLB+EX_R10(r13)
std r11,PACA_EXSLB+EX_R11(r13)
std r12,PACA_EXSLB+EX_R12(r13)
mfspr r10,SPRN_SPRG1
std r10,PACA_EXSLB+EX_R13(r13)
ld r12,PACALPPACAPTR(r13)
ld r12,LPPACASRR1(r12)
b .slb_miss_realmode

STD_EXCEPTION_ISERIES(0x400, instruction_access, PACA_EXGEN)

.globl instruction_access_slb_iSeries
instruction_access_slb_iSeries:
mtspr SPRN_SPRG1,r13 /* save r13 */
mfspr r13,SPRN_SPRG3 /* get paca address into r13 */
std r3,PACA_EXSLB+EX_R3(r13)
ld r3,PACALPPACAPTR(r13)
ld r3,LPPACASRR0(r3) /* get SRR0 value */
std r9,PACA_EXSLB+EX_R9(r13)
mfcr r9
#ifdef __DISABLED__
cmpdi r3,0
bge .slb_miss_user_iseries
#endif
std r10,PACA_EXSLB+EX_R10(r13)
std r11,PACA_EXSLB+EX_R11(r13)
std r12,PACA_EXSLB+EX_R12(r13)
mfspr r10,SPRN_SPRG1
std r10,PACA_EXSLB+EX_R13(r13)
ld r12,PACALPPACAPTR(r13)
ld r12,LPPACASRR1(r12)
b .slb_miss_realmode

#ifdef __DISABLED__
slb_miss_user_iseries:
std r10,PACA_EXGEN+EX_R10(r13)
std r11,PACA_EXGEN+EX_R11(r13)
std r12,PACA_EXGEN+EX_R12(r13)
mfspr r10,SPRG1
ld r11,PACA_EXSLB+EX_R9(r13)
ld r12,PACA_EXSLB+EX_R3(r13)
std r10,PACA_EXGEN+EX_R13(r13)
std r11,PACA_EXGEN+EX_R9(r13)
std r12,PACA_EXGEN+EX_R3(r13)
EXCEPTION_PROLOG_ISERIES_2
b slb_miss_user_common
#endif

MASKABLE_EXCEPTION_ISERIES(0x500, hardware_interrupt)
STD_EXCEPTION_ISERIES(0x600, alignment, PACA_EXGEN)
STD_EXCEPTION_ISERIES(0x700, program_check, PACA_EXGEN)
STD_EXCEPTION_ISERIES(0x800, fp_unavailable, PACA_EXGEN)
MASKABLE_EXCEPTION_ISERIES(0x900, decrementer)
STD_EXCEPTION_ISERIES(0xa00, trap_0a, PACA_EXGEN)
STD_EXCEPTION_ISERIES(0xb00, trap_0b, PACA_EXGEN)

.globl system_call_iSeries
system_call_iSeries:
mr r9,r13
mfspr r13,SPRN_SPRG3
EXCEPTION_PROLOG_ISERIES_2
b system_call_common

STD_EXCEPTION_ISERIES( 0xd00, single_step, PACA_EXGEN)
STD_EXCEPTION_ISERIES( 0xe00, trap_0e, PACA_EXGEN)
STD_EXCEPTION_ISERIES( 0xf00, performance_monitor, PACA_EXGEN)

decrementer_iSeries_masked:
/* We may not have a valid TOC pointer in here. */
li r11,1
ld r12,PACALPPACAPTR(r13)
stb r11,LPPACADECRINT(r12)
LOAD_REG_IMMEDIATE(r12, tb_ticks_per_jiffy)
lwz r12,0(r12)
mtspr SPRN_DEC,r12
/* fall through */

hardware_interrupt_iSeries_masked:
mtcrf 0x80,r9 /* Restore regs */
ld r12,PACALPPACAPTR(r13)
ld r11,LPPACASRR0(r12)
ld r12,LPPACASRR1(r12)
mtspr SPRN_SRR0,r11
mtspr SPRN_SRR1,r12
ld r9,PACA_EXGEN+EX_R9(r13)
ld r10,PACA_EXGEN+EX_R10(r13)
ld r11,PACA_EXGEN+EX_R11(r13)
ld r12,PACA_EXGEN+EX_R12(r13)
ld r13,PACA_EXGEN+EX_R13(r13)
rfid
b . /* prevent speculative execution */
#endif /* CONFIG_PPC_ISERIES */

/*** Common interrupt handlers ***/

STD_EXCEPTION_COMMON(0x100, system_reset, .system_reset_exception)
Expand Down
136 changes: 136 additions & 0 deletions arch/powerpc/platforms/iseries/exception.S
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,8 @@
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
#include <asm/ptrace.h>
#include <asm/exception.h>
#include <asm/cputable.h>

.text

Expand Down Expand Up @@ -83,6 +85,140 @@ iSeries_secondary_smp_loop:
b 1b /* If SMP not configured, secondaries
* loop forever */

/*** ISeries-LPAR interrupt handlers ***/

STD_EXCEPTION_ISERIES(0x200, machine_check, PACA_EXMC)

.globl data_access_iSeries
data_access_iSeries:
mtspr SPRN_SPRG1,r13
BEGIN_FTR_SECTION
mtspr SPRN_SPRG2,r12
mfspr r13,SPRN_DAR
mfspr r12,SPRN_DSISR
srdi r13,r13,60
rlwimi r13,r12,16,0x20
mfcr r12
cmpwi r13,0x2c
beq .do_stab_bolted_iSeries
mtcrf 0x80,r12
mfspr r12,SPRN_SPRG2
END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
EXCEPTION_PROLOG_ISERIES_1(PACA_EXGEN)
EXCEPTION_PROLOG_ISERIES_2
b data_access_common

.do_stab_bolted_iSeries:
mtcrf 0x80,r12
mfspr r12,SPRN_SPRG2
EXCEPTION_PROLOG_ISERIES_1(PACA_EXSLB)
EXCEPTION_PROLOG_ISERIES_2
b .do_stab_bolted

.globl data_access_slb_iSeries
data_access_slb_iSeries:
mtspr SPRN_SPRG1,r13 /* save r13 */
mfspr r13,SPRN_SPRG3 /* get paca address into r13 */
std r3,PACA_EXSLB+EX_R3(r13)
mfspr r3,SPRN_DAR
std r9,PACA_EXSLB+EX_R9(r13)
mfcr r9
#ifdef __DISABLED__
cmpdi r3,0
bge slb_miss_user_iseries
#endif
std r10,PACA_EXSLB+EX_R10(r13)
std r11,PACA_EXSLB+EX_R11(r13)
std r12,PACA_EXSLB+EX_R12(r13)
mfspr r10,SPRN_SPRG1
std r10,PACA_EXSLB+EX_R13(r13)
ld r12,PACALPPACAPTR(r13)
ld r12,LPPACASRR1(r12)
b .slb_miss_realmode

STD_EXCEPTION_ISERIES(0x400, instruction_access, PACA_EXGEN)

.globl instruction_access_slb_iSeries
instruction_access_slb_iSeries:
mtspr SPRN_SPRG1,r13 /* save r13 */
mfspr r13,SPRN_SPRG3 /* get paca address into r13 */
std r3,PACA_EXSLB+EX_R3(r13)
ld r3,PACALPPACAPTR(r13)
ld r3,LPPACASRR0(r3) /* get SRR0 value */
std r9,PACA_EXSLB+EX_R9(r13)
mfcr r9
#ifdef __DISABLED__
cmpdi r3,0
bge slb_miss_user_iseries
#endif
std r10,PACA_EXSLB+EX_R10(r13)
std r11,PACA_EXSLB+EX_R11(r13)
std r12,PACA_EXSLB+EX_R12(r13)
mfspr r10,SPRN_SPRG1
std r10,PACA_EXSLB+EX_R13(r13)
ld r12,PACALPPACAPTR(r13)
ld r12,LPPACASRR1(r12)
b .slb_miss_realmode

#ifdef __DISABLED__
slb_miss_user_iseries:
std r10,PACA_EXGEN+EX_R10(r13)
std r11,PACA_EXGEN+EX_R11(r13)
std r12,PACA_EXGEN+EX_R12(r13)
mfspr r10,SPRG1
ld r11,PACA_EXSLB+EX_R9(r13)
ld r12,PACA_EXSLB+EX_R3(r13)
std r10,PACA_EXGEN+EX_R13(r13)
std r11,PACA_EXGEN+EX_R9(r13)
std r12,PACA_EXGEN+EX_R3(r13)
EXCEPTION_PROLOG_ISERIES_2
b slb_miss_user_common
#endif

MASKABLE_EXCEPTION_ISERIES(0x500, hardware_interrupt)
STD_EXCEPTION_ISERIES(0x600, alignment, PACA_EXGEN)
STD_EXCEPTION_ISERIES(0x700, program_check, PACA_EXGEN)
STD_EXCEPTION_ISERIES(0x800, fp_unavailable, PACA_EXGEN)
MASKABLE_EXCEPTION_ISERIES(0x900, decrementer)
STD_EXCEPTION_ISERIES(0xa00, trap_0a, PACA_EXGEN)
STD_EXCEPTION_ISERIES(0xb00, trap_0b, PACA_EXGEN)

.globl system_call_iSeries
system_call_iSeries:
mr r9,r13
mfspr r13,SPRN_SPRG3
EXCEPTION_PROLOG_ISERIES_2
b system_call_common

STD_EXCEPTION_ISERIES( 0xd00, single_step, PACA_EXGEN)
STD_EXCEPTION_ISERIES( 0xe00, trap_0e, PACA_EXGEN)
STD_EXCEPTION_ISERIES( 0xf00, performance_monitor, PACA_EXGEN)

decrementer_iSeries_masked:
/* We may not have a valid TOC pointer in here. */
li r11,1
ld r12,PACALPPACAPTR(r13)
stb r11,LPPACADECRINT(r12)
LOAD_REG_IMMEDIATE(r12, tb_ticks_per_jiffy)
lwz r12,0(r12)
mtspr SPRN_DEC,r12
/* fall through */

hardware_interrupt_iSeries_masked:
mtcrf 0x80,r9 /* Restore regs */
ld r12,PACALPPACAPTR(r13)
ld r11,LPPACASRR0(r12)
ld r12,LPPACASRR1(r12)
mtspr SPRN_SRR0,r11
mtspr SPRN_SRR1,r12
ld r9,PACA_EXGEN+EX_R9(r13)
ld r10,PACA_EXGEN+EX_R10(r13)
ld r11,PACA_EXGEN+EX_R11(r13)
ld r12,PACA_EXGEN+EX_R12(r13)
ld r13,PACA_EXGEN+EX_R13(r13)
rfid
b . /* prevent speculative execution */

_INIT_STATIC(__start_initialization_iSeries)
/* Clear out the BSS */
LOAD_REG_IMMEDIATE(r11,__bss_stop)
Expand Down

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