Date: Tue, 25 May 2010 21:39:30 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r208556 - head/sys/i386/i386 Message-ID: <201005252139.o4PLdURa045081@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: jhb Date: Tue May 25 21:39:30 2010 New Revision: 208556 URL: http://svn.freebsd.org/changeset/base/208556 Log: Only enable CMCI on i386 if 'device apic' is enabled in the kernel since it requires the local APIC to work. Modified: head/sys/i386/i386/mca.c Modified: head/sys/i386/i386/mca.c ============================================================================== --- head/sys/i386/i386/mca.c Tue May 25 21:32:37 2010 (r208555) +++ head/sys/i386/i386/mca.c Tue May 25 21:39:30 2010 (r208556) @@ -32,6 +32,8 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#include "opt_apic.h" + #include <sys/param.h> #include <sys/bus.h> #include <sys/interrupt.h> @@ -59,6 +61,7 @@ enum scan_mode { CMCI, }; +#ifdef DEV_APIC /* * State maintained for each monitored MCx bank to control the * corrected machine check interrupt threshold. @@ -67,6 +70,7 @@ struct cmc_state { int max_threshold; int last_intr; }; +#endif struct mca_internal { struct mca_record rec; @@ -99,9 +103,12 @@ static struct callout mca_timer; static int mca_ticks = 3600; /* Check hourly by default. */ static struct task mca_task; static struct mtx mca_lock; + +#ifdef DEV_APIC static struct cmc_state **cmc_state; /* Indexed by cpuid, bank */ static int cmc_banks; static int cmc_throttle = 60; /* Time in seconds to throttle CMCI. */ +#endif static int sysctl_positive_int(SYSCTL_HANDLER_ARGS) @@ -423,6 +430,7 @@ mca_record_entry(const struct mca_record mtx_unlock_spin(&mca_lock); } +#ifdef DEV_APIC /* * Update the interrupt threshold for a CMCI. The strategy is to use * a low trigger that interrupts as soon as the first event occurs. @@ -494,6 +502,7 @@ cmci_update(enum scan_mode mode, int ban wrmsr(MSR_MC_CTL2(bank), limit); } } +#endif /* * This scans all the machine check banks of the current CPU to see if @@ -521,12 +530,14 @@ mca_scan(enum scan_mode mode) ucmask |= MC_STATUS_OVER; mcg_cap = rdmsr(MSR_MCG_CAP); for (i = 0; i < (mcg_cap & MCG_CAP_COUNT); i++) { +#ifdef DEV_APIC /* * For a CMCI, only check banks this CPU is * responsible for. */ if (mode == CMCI && !(PCPU_GET(cmci_mask) & 1 << i)) continue; +#endif valid = mca_check_status(i, &rec); if (valid) { @@ -538,12 +549,14 @@ mca_scan(enum scan_mode mode) mca_record_entry(&rec); } +#ifdef DEV_APIC /* * If this is a bank this CPU monitors via CMCI, * update the threshold. */ if (PCPU_GET(cmci_mask) & (1 << i)) cmci_update(mode, i, valid, &rec); +#endif } return (mode == MCE ? recoverable : count); } @@ -621,6 +634,7 @@ mca_startup(void *dummy) } SYSINIT(mca_startup, SI_SUB_SMP, SI_ORDER_ANY, mca_startup, NULL); +#ifdef DEV_APIC static void cmci_setup(uint64_t mcg_cap) { @@ -637,6 +651,7 @@ cmci_setup(uint64_t mcg_cap) &cmc_throttle, 0, sysctl_positive_int, "I", "Interval in seconds to throttle corrected MC interrupts"); } +#endif static void mca_setup(uint64_t mcg_cap) @@ -657,10 +672,13 @@ mca_setup(uint64_t mcg_cap) 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 (mcg_cap & MCG_CAP_CMCI_P) cmci_setup(mcg_cap); +#endif } +#ifdef DEV_APIC /* * See if we should monitor CMCI for this bank. If CMCI_EN is already * set in MC_CTL2, then another CPU is responsible for this bank, so @@ -707,6 +725,7 @@ cmci_monitor(int i) /* Mark this bank as monitored. */ PCPU_SET(cmci_mask, PCPU_GET(cmci_mask) | 1 << i); } +#endif /* Must be executed on each CPU. */ void @@ -775,15 +794,19 @@ mca_init(void) if (!skip) wrmsr(MSR_MC_CTL(i), ctl); +#ifdef DEV_APIC if (mcg_cap & MCG_CAP_CMCI_P) cmci_monitor(i); +#endif /* Clear all errors. */ wrmsr(MSR_MC_STATUS(i), 0); } +#ifdef DEV_APIC if (PCPU_GET(cmci_mask) != 0) lapic_enable_cmc(); +#endif } load_cr4(rcr4() | CR4_MCE); @@ -817,6 +840,7 @@ mca_intr(void) return (recoverable); } +#ifdef DEV_APIC /* Called for a CMCI (correctable machine check interrupt). */ void cmc_intr(void) @@ -844,3 +868,4 @@ cmc_intr(void) mtx_unlock_spin(&mca_lock); } } +#endif
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201005252139.o4PLdURa045081>