[PATCH 1/4] powerpc/perf: Initialise PMU related regs on POWER9
From: Madhavan Srinivasan <hidden>
Date: 2016-06-11 07:19:31
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Add two new init functions __init_PMU_300 and __init_PMU_HV_300 to initialise PMU related regs on POWER9. Signed-off-by: Madhavan Srinivasan <redacted> --- arch/powerpc/kernel/cpu_setup_power.S | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S
index 584e119fa8b0..a2080fde0cc5 100644
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S@@ -87,6 +87,7 @@ _GLOBAL(__restore_cpu_power8) _GLOBAL(__setup_cpu_power9) mflr r11 bl __init_FSCR + bl __init_PMU_300 bl __init_hvmode_206 mtlr r11 beqlr
@@ -97,12 +98,14 @@ _GLOBAL(__setup_cpu_power9) bl __init_LPCR bl __init_HFSCR bl __init_tlb_power9 + bl __init_PMU_HV_300 mtlr r11 blr _GLOBAL(__restore_cpu_power9) mflr r11 bl __init_FSCR + bl __init_PMU_300 mfmsr r3 rldicl. r0,r3,4,63 mtlr r11
@@ -114,6 +117,7 @@ _GLOBAL(__restore_cpu_power9) bl __init_LPCR bl __init_HFSCR bl __init_tlb_power9 + bl __init_PMU_HV_300 mtlr r11 blr
@@ -219,3 +223,16 @@ __init_PMU: mtspr SPRN_MMCR1,r5 mtspr SPRN_MMCR2,r5 blr + +__init_PMU_HV_300: + li r5,0 + mtspr SPRN_MMCRC,r5 + blr + +__init_PMU_300: + li r5,0 + mtspr SPRN_MMCRA,r5 + mtspr SPRN_MMCR0,r5 + mtspr SPRN_MMCR1,r5 + mtspr SPRN_MMCR2,r5 + blr
--
1.9.1