xnu-3248.60.10.tar.gz

[apple/xnu.git] / bsd / dev / i386 / sysctl.c

diff --git a/bsd/dev/i386/sysctl.c b/bsd/dev/i386/sysctl.c
index cb15eb632e49521e4ecf3b1f326afcfed347ea3e..2e4672f23e3b651bf3427b0036b3973fc75b2d21 100644 (file)
--- a/bsd/dev/i386/sysctl.c
+++ b/bsd/dev/i386/sysctl.c
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2003-2011 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -32,10 +32,14 @@
 #include <sys/sysctl.h>
 #include <i386/cpuid.h>
 #include <i386/tsc.h>
 #include <sys/sysctl.h>
 #include <i386/cpuid.h>
 #include <i386/tsc.h>

+#include <i386/rtclock_protos.h>

 #include <i386/machine_routines.h>
 #include <i386/machine_routines.h>

+#include <i386/pal_routines.h>

 #include <i386/ucode.h>
 #include <kern/clock.h>
 #include <libkern/libkern.h>
 #include <i386/ucode.h>
 #include <kern/clock.h>
 #include <libkern/libkern.h>

+#include <i386/lapic.h>
+

 
 static int
 _i386_cpu_info SYSCTL_HANDLER_ARGS
 
 static int
 _i386_cpu_info SYSCTL_HANDLER_ARGS


@@ -119,6 +123,7 @@ cpu_xsave SYSCTL_HANDLER_ARGS
     return _i386_cpu_info(oidp, ptr, arg2, req);
 }
 
     return _i386_cpu_info(oidp, ptr, arg2, req);
 }
 

+

 static int
 cpu_features SYSCTL_HANDLER_ARGS
 {
 static int
 cpu_features SYSCTL_HANDLER_ARGS
 {


@@ -147,6 +152,24 @@ cpu_extfeatures SYSCTL_HANDLER_ARGS
     return SYSCTL_OUT(req, buf, strlen(buf) + 1);
 }
 
     return SYSCTL_OUT(req, buf, strlen(buf) + 1);
 }
 

+static int
+cpu_leaf7_features SYSCTL_HANDLER_ARGS
+{
+    __unused struct sysctl_oid *unused_oidp = oidp;
+    __unused void *unused_arg1 = arg1;
+    __unused int unused_arg2 = arg2; 
+    char buf[512];
+
+    uint32_t   leaf7_features = cpuid_info()->cpuid_leaf7_features;
+    if (leaf7_features == 0)
+        return ENOENT;
+
+    buf[0] = '\0';
+    cpuid_get_leaf7_feature_names(leaf7_features, buf, sizeof(buf));
+
+    return SYSCTL_OUT(req, buf, strlen(buf) + 1);
+}
+

 static int
 cpu_logical_per_package SYSCTL_HANDLER_ARGS
 {
 static int
 cpu_logical_per_package SYSCTL_HANDLER_ARGS
 {


@@ -262,6 +285,26 @@ misc_interrupt_latency_max(__unused struct sysctl_oid *oidp, __unused void *arg1
        return error;
 }
 
        return error;
 }
 

+/*
+ * Triggers a machine-check exception - for a suitably configured kernel only.
+ */
+extern void mca_exception_panic(void);
+static int
+misc_machine_check_panic(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
+{
+       int changed = 0, error;
+       char buf[128];
+       buf[0] = '\0';
+
+       error = sysctl_io_string(req, buf, sizeof(buf), 0, &changed);
+
+       if (error == 0 && changed) {
+               mca_exception_panic();
+       }
+       return error;
+}
+
+

 SYSCTL_NODE(_machdep, OID_AUTO, cpu, CTLFLAG_RW|CTLFLAG_LOCKED, 0,
        "CPU info");
 
 SYSCTL_NODE(_machdep, OID_AUTO, cpu, CTLFLAG_RW|CTLFLAG_LOCKED, 0,
        "CPU info");
 


@@ -305,6 +348,12 @@ SYSCTL_PROC(_machdep_cpu, OID_AUTO, feature_bits, CTLTYPE_QUAD | CTLFLAG_RD | CT
            (void *)offsetof(i386_cpu_info_t, cpuid_features), sizeof(uint64_t),
            i386_cpu_info, "IU", "CPU features");
 
            (void *)offsetof(i386_cpu_info_t, cpuid_features), sizeof(uint64_t),
            i386_cpu_info, "IU", "CPU features");
 

+SYSCTL_PROC(_machdep_cpu, OID_AUTO, leaf7_feature_bits,
+           CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 
+           (void *)offsetof(i386_cpu_info_t, cpuid_leaf7_features),
+           sizeof(uint32_t),
+           i386_cpu_info_nonzero, "IU", "CPU Leaf7 features");
+

 SYSCTL_PROC(_machdep_cpu, OID_AUTO, extfeature_bits, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, 
            (void *)offsetof(i386_cpu_info_t, cpuid_extfeatures), sizeof(uint64_t),
            i386_cpu_info, "IU", "CPU extended features");
 SYSCTL_PROC(_machdep_cpu, OID_AUTO, extfeature_bits, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, 
            (void *)offsetof(i386_cpu_info_t, cpuid_extfeatures), sizeof(uint64_t),
            i386_cpu_info, "IU", "CPU extended features");


@@ -321,6 +370,11 @@ SYSCTL_PROC(_machdep_cpu, OID_AUTO, features, CTLTYPE_STRING | CTLFLAG_RD | CTLF
            0, 0,
            cpu_features, "A", "CPU feature names");
 
            0, 0,
            cpu_features, "A", "CPU feature names");
 

+SYSCTL_PROC(_machdep_cpu, OID_AUTO, leaf7_features,
+           CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_LOCKED, 
+           0, 0,
+           cpu_leaf7_features, "A", "CPU Leaf7 feature names");
+

 SYSCTL_PROC(_machdep_cpu, OID_AUTO, extfeatures, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_LOCKED, 
            0, 0,
            cpu_extfeatures, "A", "CPU extended feature names");
 SYSCTL_PROC(_machdep_cpu, OID_AUTO, extfeatures, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_LOCKED, 
            0, 0,
            cpu_extfeatures, "A", "CPU extended feature names");


@@ -426,7 +480,7 @@ SYSCTL_PROC(_machdep_cpu_thermal, OID_AUTO, package_thermal_intr,
            CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 
            (void *)offsetof(cpuid_thermal_leaf_t, package_thermal_intr),
            sizeof(boolean_t),
            CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 
            (void *)offsetof(cpuid_thermal_leaf_t, package_thermal_intr),
            sizeof(boolean_t),

-           cpu_thermal, "I", "Packge Thermal interrupt and Status");
+           cpu_thermal, "I", "Package Thermal interrupt and Status");

 
 SYSCTL_PROC(_machdep_cpu_thermal, OID_AUTO, hardware_feedback,
            CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 
 
 SYSCTL_PROC(_machdep_cpu_thermal, OID_AUTO, hardware_feedback,
            CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 


@@ -445,9 +499,15 @@ SYSCTL_NODE(_machdep_cpu, OID_AUTO, xsave, CTLFLAG_RW|CTLFLAG_LOCKED, 0,
 
 SYSCTL_PROC(_machdep_cpu_xsave, OID_AUTO, extended_state,
            CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 
 
 SYSCTL_PROC(_machdep_cpu_xsave, OID_AUTO, extended_state,
            CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 

-           (void *)offsetof(cpuid_xsave_leaf_t, extended_state),
+           (void *) 0,

            sizeof(cpuid_xsave_leaf_t),
            sizeof(cpuid_xsave_leaf_t),

-           cpu_xsave, "IU", "XSAVE Extended State");
+           cpu_xsave, "IU", "XSAVE Extended State Main Leaf");
+
+SYSCTL_PROC(_machdep_cpu_xsave, OID_AUTO, extended_state1,
+           CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 
+           (void *) sizeof(cpuid_xsave_leaf_t),
+           sizeof(cpuid_xsave_leaf_t),
+           cpu_xsave, "IU", "XSAVE Extended State Sub-leaf 1");

 
 
 SYSCTL_NODE(_machdep_cpu, OID_AUTO, arch_perf, CTLFLAG_RW|CTLFLAG_LOCKED, 0,
 
 
 SYSCTL_NODE(_machdep_cpu, OID_AUTO, arch_perf, CTLFLAG_RW|CTLFLAG_LOCKED, 0,


@@ -628,9 +688,33 @@ SYSCTL_PROC(_machdep_cpu_flex_ratio, OID_AUTO, max,
            cpu_flex_ratio_max, "I", "Flex ratio max (non-turbo)");
 
 SYSCTL_PROC(_machdep_cpu, OID_AUTO, ucupdate, 
            cpu_flex_ratio_max, "I", "Flex ratio max (non-turbo)");
 
 SYSCTL_PROC(_machdep_cpu, OID_AUTO, ucupdate, 

-                       CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED, 0, 0,
+           CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED, 0, 0,

             cpu_ucode_update, "S", "Microcode update interface");
 
             cpu_ucode_update, "S", "Microcode update interface");
 

+SYSCTL_NODE(_machdep_cpu, OID_AUTO, tsc_ccc, CTLFLAG_RW|CTLFLAG_LOCKED, 0,
+       "TSC/CCC frequency information");
+
+SYSCTL_PROC(_machdep_cpu_tsc_ccc, OID_AUTO, numerator,
+           CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 
+           (void *)offsetof(i386_cpu_info_t, cpuid_tsc_leaf.numerator),
+           sizeof(uint32_t),
+           i386_cpu_info, "I", "Numerator of TSC/CCC ratio");
+
+SYSCTL_PROC(_machdep_cpu_tsc_ccc, OID_AUTO, denominator,
+           CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 
+           (void *)offsetof(i386_cpu_info_t, cpuid_tsc_leaf.denominator),
+           sizeof(uint32_t),
+           i386_cpu_info, "I", "Denominator of TSC/CCC ratio");
+
+static const uint32_t apic_timer_vector = (LAPIC_DEFAULT_INTERRUPT_BASE + LAPIC_TIMER_INTERRUPT);
+static const uint32_t apic_IPI_vector = (LAPIC_DEFAULT_INTERRUPT_BASE + LAPIC_INTERPROCESSOR_INTERRUPT);
+
+SYSCTL_NODE(_machdep, OID_AUTO, vectors, CTLFLAG_RD | CTLFLAG_LOCKED, 0,
+       "Interrupt vector assignments");
+
+SYSCTL_UINT     (_machdep_vectors, OID_AUTO, timer, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, __DECONST(uint32_t *,&apic_timer_vector), 0, "");
+SYSCTL_UINT     (_machdep_vectors, OID_AUTO, IPI, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, __DECONST(uint32_t *,&apic_IPI_vector), 0, "");
+

 uint64_t pmap_pv_hashlist_walks;
 uint64_t pmap_pv_hashlist_cnts;
 uint32_t pmap_pv_hashlist_max;
 uint64_t pmap_pv_hashlist_walks;
 uint64_t pmap_pv_hashlist_cnts;
 uint32_t pmap_pv_hashlist_max;


@@ -670,7 +754,34 @@ SYSCTL_QUAD(_machdep_memmap, OID_AUTO, Other, CTLFLAG_RD|CTLFLAG_LOCKED, &firmwa
 
 SYSCTL_NODE(_machdep, OID_AUTO, tsc, CTLFLAG_RD|CTLFLAG_LOCKED, NULL, "Timestamp counter parameters");
 
 
 SYSCTL_NODE(_machdep, OID_AUTO, tsc, CTLFLAG_RD|CTLFLAG_LOCKED, NULL, "Timestamp counter parameters");
 

-SYSCTL_QUAD(_machdep_tsc, OID_AUTO, frequency, CTLFLAG_RD|CTLFLAG_LOCKED, &tscFreq, "");
+SYSCTL_QUAD(_machdep_tsc, OID_AUTO, frequency,
+       CTLFLAG_RD|CTLFLAG_LOCKED, &tscFreq, "");
+
+extern uint32_t deep_idle_rebase;
+SYSCTL_UINT(_machdep_tsc, OID_AUTO, deep_idle_rebase,
+       CTLFLAG_RD|CTLFLAG_LOCKED, &deep_idle_rebase, 0, "");
+SYSCTL_QUAD(_machdep_tsc, OID_AUTO, at_boot,
+       CTLFLAG_RD|CTLFLAG_LOCKED, &tsc_at_boot, "");
+SYSCTL_QUAD(_machdep_tsc, OID_AUTO, rebase_abs_time,
+       CTLFLAG_RD|CTLFLAG_LOCKED, &tsc_rebase_abs_time, "");
+
+SYSCTL_NODE(_machdep_tsc, OID_AUTO, nanotime,
+       CTLFLAG_RD|CTLFLAG_LOCKED, NULL, "TSC to ns conversion");
+SYSCTL_QUAD(_machdep_tsc_nanotime, OID_AUTO, tsc_base,
+       CTLFLAG_RD | CTLFLAG_LOCKED,
+       __DECONST(uint64_t *, &pal_rtc_nanotime_info.tsc_base), "");
+SYSCTL_QUAD(_machdep_tsc_nanotime, OID_AUTO, ns_base,
+       CTLFLAG_RD | CTLFLAG_LOCKED,
+       __DECONST(uint64_t *, &pal_rtc_nanotime_info.ns_base), "");
+SYSCTL_UINT(_machdep_tsc_nanotime, OID_AUTO, scale,
+       CTLFLAG_RD | CTLFLAG_LOCKED,
+       __DECONST(uint32_t *, &pal_rtc_nanotime_info.scale), 0, "");
+SYSCTL_UINT(_machdep_tsc_nanotime, OID_AUTO, shift,
+       CTLFLAG_RD | CTLFLAG_LOCKED,
+       __DECONST(uint32_t *, &pal_rtc_nanotime_info.shift), 0, "");
+SYSCTL_UINT(_machdep_tsc_nanotime, OID_AUTO, generation,
+       CTLFLAG_RD | CTLFLAG_LOCKED,
+       __DECONST(uint32_t *, &pal_rtc_nanotime_info.generation), 0, "");

 
 SYSCTL_NODE(_machdep, OID_AUTO, misc, CTLFLAG_RW|CTLFLAG_LOCKED, 0,
        "Miscellaneous x86 kernel parameters");
 
 SYSCTL_NODE(_machdep, OID_AUTO, misc, CTLFLAG_RW|CTLFLAG_LOCKED, 0,
        "Miscellaneous x86 kernel parameters");


@@ -680,6 +791,97 @@ SYSCTL_PROC(_machdep_misc, OID_AUTO, panic_restart_timeout,
            0, 0,
            panic_set_restart_timeout, "I", "Panic restart timeout in seconds");
 
            0, 0,
            panic_set_restart_timeout, "I", "Panic restart timeout in seconds");
 

-SYSCTL_PROC(_machdep_misc, OID_AUTO, interrupt_latency_max, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 
+SYSCTL_PROC(_machdep_misc, OID_AUTO, interrupt_latency_max,
+           CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 

            0, 0,
            misc_interrupt_latency_max, "A", "Maximum Interrupt latency");
            0, 0,
            misc_interrupt_latency_max, "A", "Maximum Interrupt latency");

+
+SYSCTL_PROC(_machdep_misc, OID_AUTO, machine_check_panic,
+           CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 
+           0, 0,
+           misc_machine_check_panic, "A", "Machine-check exception test");
+
+#if DEVELOPMENT || DEBUG
+SYSCTL_QUAD(_machdep, OID_AUTO, reportphyreadabs,
+               CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
+               &reportphyreaddelayabs, "");
+SYSCTL_INT(_machdep, OID_AUTO, reportphyreadosbt,
+               CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
+               &reportphyreadosbt, 0, "");
+#endif
+
+extern void timer_queue_trace_cpu(int);
+static int
+misc_timer_queue_trace(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
+{
+       int changed = 0, error;
+       char buf[128];
+       buf[0] = '\0';
+
+       error = sysctl_io_string(req, buf, sizeof(buf), 0, &changed);
+
+       if (error == 0 && changed) {
+               timer_queue_trace_cpu(0);
+       }
+       return error;
+}
+
+SYSCTL_PROC(_machdep_misc, OID_AUTO, timer_queue_trace,
+           CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 
+           0, 0,
+           misc_timer_queue_trace, "A", "Cut timer queue tracepoint");
+
+extern long NMI_count;
+extern void NMI_cpus(void);
+static int
+misc_nmis(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
+{
+       int new = 0, old = 0, changed = 0, error;
+
+       old = NMI_count;
+
+       error = sysctl_io_number(req, old, sizeof(int), &new, &changed);
+       if (error == 0 && changed) {
+               NMI_cpus();
+       }
+
+       return error;
+}
+
+SYSCTL_PROC(_machdep_misc, OID_AUTO, nmis,
+           CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 
+           0, 0,
+           misc_nmis, "I", "Report/increment NMI count");
+
+/* Parameters related to timer coalescing tuning, to be replaced
+ * with a dedicated systemcall in the future.
+ */
+/* Enable processing pending timers in the context of any other interrupt */
+SYSCTL_INT(_kern, OID_AUTO, interrupt_timer_coalescing_enabled,
+               CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
+               &interrupt_timer_coalescing_enabled, 0, "");
+/* Upon entering idle, process pending timers with HW deadlines
+ * this far in the future.
+ */
+SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_idle_entry_hard_deadline_max,
+               CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
+               &idle_entry_timer_processing_hdeadline_threshold, 0, "");
+
+/* Track potentially expensive eager timer evaluations on QoS tier
+ * switches.
+ */
+extern uint32_t ml_timer_eager_evaluations;
+
+SYSCTL_INT(_machdep, OID_AUTO, eager_timer_evaluations,
+               CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
+               &ml_timer_eager_evaluations, 0, "");
+
+extern uint64_t ml_timer_eager_evaluation_max;
+
+SYSCTL_QUAD(_machdep, OID_AUTO, eager_timer_evaluation_max,
+               CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
+               &ml_timer_eager_evaluation_max, "");
+extern uint64_t x86_isr_fp_simd_use;
+SYSCTL_QUAD(_machdep, OID_AUTO, x86_fp_simd_isr_uses,
+               CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
+               &x86_isr_fp_simd_use, "");