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Commit dc8f571a authored by Stephen Rothwell's avatar Stephen Rothwell Committed by Paul Mackerras
Browse files

[POWERPC] Move the iSeries exception vectors 



out of head_64.S and into platforms/iseries/exception.S

Signed-off-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent f9ff0f30

arch/powerpc/kernel/head_64.S

+0 −136
Original line number Diff line number Diff line
@@ -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)

arch/powerpc/platforms/iseries/exception.S

+136 −0
Original line number Diff line number Diff line
@@ -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
@@ -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)