Function mca_setup

freebsd/x86/x86/mca.c:1010–1055

#endif

static void
mca_setup(uint64_t mcg_cap)
{

	/*
	 * On AMD Family 10h processors, unless logging of level one TLB
	 * parity (L1TP) errors is disabled, enable the recommended workaround
	 * for Erratum 383.
	 */
	if (cpu_vendor_id == CPU_VENDOR_AMD &&
	    CPUID_TO_FAMILY(cpu_id) == 0x10 && amd10h_L1TP)
		workaround_erratum383 = 1;

	mca_banks = mcg_cap & MCG_CAP_COUNT;
	mtx_init(&mca_lock, "mca", NULL, MTX_SPIN);
	STAILQ_INIT(&mca_records);
	STAILQ_INIT(&mca_pending);
	TASK_INIT(&mca_scan_task, 0, mca_scan_cpus, NULL);
	callout_init(&mca_timer, 1);
	STAILQ_INIT(&mca_freelist);
	TASK_INIT(&mca_resize_task, 0, mca_resize, NULL);
	mca_resize_freelist();
	SYSCTL_ADD_INT(NULL, SYSCTL_STATIC_CHILDREN(_hw_mca), OID_AUTO,
	    "count", CTLFLAG_RD, (int *)(uintptr_t)&mca_count, 0,
	    "Record count");
	SYSCTL_ADD_PROC(NULL, SYSCTL_STATIC_CHILDREN(_hw_mca), OID_AUTO,
	    "maxcount", CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE,
	    &mca_maxcount, 0, sysctl_mca_maxcount, "I",
	    "Maximum record count (-1 is unlimited)");
	SYSCTL_ADD_PROC(NULL, SYSCTL_STATIC_CHILDREN(_hw_mca), OID_AUTO,
	    "interval", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, &mca_ticks,
	    0, sysctl_positive_int, "I",
	    "Periodic interval in seconds to scan for machine checks");
	SYSCTL_ADD_NODE(NULL, SYSCTL_STATIC_CHILDREN(_hw_mca), OID_AUTO,
	    "records", CTLFLAG_RD | CTLFLAG_MPSAFE, sysctl_mca_records,
	    "Machine check records");
	SYSCTL_ADD_PROC(NULL, SYSCTL_STATIC_CHILDREN(_hw_mca), OID_AUTO,
	    "force_scan", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, NULL, 0,
	    sysctl_mca_scan, "I", "Force an immediate scan for machine checks");
#ifdef DEV_APIC
	if (cmci_supported(mcg_cap))
		cmci_setup();
	else if (amd_thresholding_supported())
		amd_thresholding_setup();
#endif
}

#ifdef DEV_APIC
/*