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Enable and disable the PMC unit at load/unload time, respectively.

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MFC after:	3 weeks
This commit is contained in:
Justin Hibbits 2014-04-18 06:39:00 +00:00
parent 79d6ca331e
commit 8a00edea58
2 changed files with 8 additions and 0 deletions
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4
sys/dev/hwpmc/hwpmc_mpc7xxx.c
View File

@ -580,6 +580,7 @@ mpc7xxx_pcpu_init(struct pmc_mdep *md, int cpu)
/* Clear the MMCRs, and set FC, to disable all PMCs. */
mtspr(SPR_MMCR0, SPR_MMCR0_FC | SPR_MMCR0_PMXE | SPR_MMCR0_PMC1CE | SPR_MMCR0_PMCNCE);
mtspr(SPR_MMCR1, 0);
mtmsr(mfmsr() | PSL_PMM);
return 0;
}
@ -589,10 +590,13 @@ mpc7xxx_pcpu_fini(struct pmc_mdep *md, int cpu)
{
uint32_t mmcr0 = mfspr(SPR_MMCR0);
mtmsr(mfmsr() & ~PSL_PMM);
mmcr0 |= SPR_MMCR0_FC;
mtspr(SPR_MMCR0, mmcr0);
free(powerpc_pcpu[cpu]->pc_ppcpmcs, M_PMC);
free(powerpc_pcpu[cpu], M_PMC);
return 0;
}

4
sys/dev/hwpmc/hwpmc_ppc970.c
View File

@ -575,6 +575,7 @@ ppc970_pcpu_init(struct pmc_mdep *md, int cpu)
mtspr(SPR_970MMCR0, SPR_MMCR0_FC | SPR_MMCR0_PMXE | SPR_MMCR0_PMC1CE |
SPR_MMCR0_PMCNCE | SPR_970MMCR0_PMC1SEL(0x8) | SPR_970MMCR0_PMC2SEL(0x8));
mtspr(SPR_970MMCR1, 0x4218420);
mtmsr(mfmsr() | PSL_PMM);
return 0;
}
@ -584,11 +585,14 @@ ppc970_pcpu_fini(struct pmc_mdep *md, int cpu)
{
register_t mmcr0 = mfspr(SPR_MMCR0);
mtmsr(mfmsr() & ~PSL_PMM);
mmcr0 |= SPR_MMCR0_FC;
mmcr0 &= ~SPR_MMCR0_PMXE;
mtspr(SPR_MMCR0, mmcr0);
free(powerpc_pcpu[cpu]->pc_ppcpmcs, M_PMC);
free(powerpc_pcpu[cpu], M_PMC);
return 0;
}