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Commit 555d97ac authored by Andy Fleming's avatar Andy Fleming Committed by Paul Mackerras
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[PATCH] powerpc: G4+ oprofile support 



This patch adds oprofile support for the 7450 and all its multitudinous
derivatives.

* Added 7450 (and derivatives) support for oprofile
* Changed e500 cputable to have oprofile model and cpu_type fields
* Added support for classic 32-bit performance monitor interrupt
* Cleaned up common powerpc oprofile code to be as common as possible
* Cleaned up oprofile_impl.h to reflect 32 bit classic code
* Added 32-bit MMCRx bitfield definitions and SPR numbers

Signed-off-by: default avatarAndy Fleming <afleming@freescale.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent e5cd0404

arch/powerpc/kernel/cputable.c

+63 −11
Original line number Diff line number Diff line
@@ -545,7 +545,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7450 2.1 */

		.pvr_mask		= 0xffffffff,
@@ -556,7 +560,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7450 2.3 and newer */

		.pvr_mask		= 0xffff0000,
@@ -567,7 +575,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7455 rev 1.x */

		.pvr_mask		= 0xffffff00,
@@ -578,7 +590,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7455 rev 2.0 */

		.pvr_mask		= 0xffffffff,
@@ -589,7 +605,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7455 others */

		.pvr_mask		= 0xffff0000,
@@ -600,7 +620,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7447/7457 Rev 1.0 */

		.pvr_mask		= 0xffffffff,
@@ -611,7 +635,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7447/7457 Rev 1.1 */

		.pvr_mask		= 0xffffffff,
@@ -622,7 +650,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7447/7457 Rev 1.2 and later */

		.pvr_mask		= 0xffff0000,
@@ -633,7 +665,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7447A */

		.pvr_mask		= 0xffff0000,
@@ -644,7 +680,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 7448 */

		.pvr_mask		= 0xffff0000,
@@ -655,7 +695,11 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 6,

		.cpu_setup		= __setup_cpu_745x

		.cpu_setup		= __setup_cpu_745x,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type      = "ppc/7450",

		.oprofile_model         = &op_model_7450,

#endif

	},

	{	/* 82xx (8240, 8245, 8260 are all 603e cores) */

		.pvr_mask		= 0x7fff0000,
@@ -979,6 +1023,10 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 4,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type	= "ppc/e500",

		.oprofile_model		= &op_model_fsl_booke,

#endif

	},

	{	/* e500v2 */

		.pvr_mask		= 0xffff0000,
@@ -992,6 +1040,10 @@ struct cpu_spec cpu_specs[] = { 
		.icache_bsize		= 32,

		.dcache_bsize		= 32,

		.num_pmcs		= 4,

#ifdef CONFIG_OPROFILE

		.oprofile_cpu_type	= "ppc/e500",

		.oprofile_model		= &op_model_fsl_booke,

#endif

	},

#endif

#if !CLASSIC_PPC

arch/powerpc/kernel/head_32.S

+6 −6
Original line number Diff line number Diff line
@@ -466,16 +466,11 @@ SystemCall: 
 * by executing an altivec instruction.

 */

	. = 0xf00

	b	Trap_0f

	b	PerformanceMonitor



	. = 0xf20

	b	AltiVecUnavailable



Trap_0f:

	EXCEPTION_PROLOG

	addi	r3,r1,STACK_FRAME_OVERHEAD

	EXC_XFER_EE(0xf00, unknown_exception)



/*

 * Handle TLB miss for instruction on 603/603e.

 * Note: we get an alternate set of r0 - r3 to use automatically.
@@ -719,6 +714,11 @@ AltiVecUnavailable: 
#endif /* CONFIG_ALTIVEC */

	EXC_XFER_EE_LITE(0xf20, altivec_unavailable_exception)



PerformanceMonitor:

	EXCEPTION_PROLOG

	addi	r3,r1,STACK_FRAME_OVERHEAD

	EXC_XFER_STD(0xf00, performance_monitor_exception)



#ifdef CONFIG_ALTIVEC

/* Note that the AltiVec support is closely modeled after the FP

 * support.  Changes to one are likely to be applicable to the

arch/powerpc/kernel/pmc.c

+5 −0
Original line number Diff line number Diff line
@@ -43,8 +43,13 @@ static void dummy_perf(struct pt_regs *regs) 
	mtspr(SPRN_MMCR0, mmcr0);

}

#else

/* Ensure exceptions are disabled */

static void dummy_perf(struct pt_regs *regs)

{

	unsigned int mmcr0 = mfspr(SPRN_MMCR0);



	mmcr0 &= ~(MMCR0_PMXE);

	mtspr(SPRN_MMCR0, mmcr0);

}

#endif

arch/powerpc/kernel/traps.c

+0 −2
Original line number Diff line number Diff line
@@ -901,12 +901,10 @@ void altivec_unavailable_exception(struct pt_regs *regs) 
	die("Unrecoverable VMX/Altivec Unavailable Exception", regs, SIGABRT);

}



#if defined(CONFIG_PPC64) || defined(CONFIG_E500)

void performance_monitor_exception(struct pt_regs *regs)

{

	perf_irq(regs);

}

#endif



#ifdef CONFIG_8xx

void SoftwareEmulation(struct pt_regs *regs)

arch/powerpc/oprofile/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -9,3 +9,4 @@ DRIVER_OBJS := $(addprefix ../../../drivers/oprofile/, \ 
oprofile-y := $(DRIVER_OBJS) common.o

oprofile-$(CONFIG_PPC64) += op_model_rs64.o op_model_power4.o

oprofile-$(CONFIG_FSL_BOOKE) += op_model_fsl_booke.o

oprofile-$(CONFIG_PPC32) += op_model_7450.o