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--- xnu/xnu-12377.121.6/bsd/dev/arm64/sysctl.c
+++ /dev/null
@@ -1,472 +0,0 @@
-/*
- * Copyright (c) 2003-2007 Apple Inc. All rights reserved.
- */
-#include <sys/param.h>
-#include <sys/kernel.h>
-#include <sys/sysctl.h>
-
-#include <machine/machine_routines.h>
-
-#include <mach/host_info.h>
-#include <mach/mach_host.h>
-#include <arm/cpuid.h>
-#include <kern/hvg_hypercall.h>
-#include <vm/pmap.h>
-#include <kern/zalloc.h>
-#include <libkern/libkern.h>
-#include <pexpert/device_tree.h>
-#include <kern/task.h>
-#include <vm/vm_protos.h>
-
-#if HYPERVISOR
-#include <kern/hv_support.h>
-#include <kern/bits.h>
-#endif
-
-#define __STR(x) #x
-#define STRINGIFY(x) __STR(x)
-
-extern uint64_t wake_abstime;
-
-#if DEVELOPMENT || DEBUG
-/* Various tuneables to modulate selection of WFE in the idle path */
-extern int wfe_rec_max;
-extern int wfe_allowed;
-
-extern int wfe_rec_none;
-extern uint32_t idle_proximate_timer_wfe;
-extern uint32_t idle_proximate_io_wfe_masked;
-extern uint32_t idle_proximate_io_wfe_unmasked;
-
-static
-SYSCTL_INT(_machdep, OID_AUTO, wfe_rec_max,
- CTLFLAG_RW, &wfe_rec_max, 0,
- "");
-
-static
-SYSCTL_INT(_machdep, OID_AUTO, wfe_allowed,
- CTLFLAG_RW, &wfe_allowed, 0,
- "");
-
-static
-SYSCTL_INT(_machdep, OID_AUTO, idle_timer_wfe,
- CTLFLAG_RW, &idle_proximate_timer_wfe, 0,
- "");
-
-static
-SYSCTL_INT(_machdep, OID_AUTO, idle_io_wfe_masked,
- CTLFLAG_RW, &idle_proximate_io_wfe_masked, 0,
- "");
-static
-SYSCTL_INT(_machdep, OID_AUTO, idle_io_wfe_unmasked,
- CTLFLAG_RW, &idle_proximate_io_wfe_unmasked, 0,
- "");
-
-static
-SYSCTL_INT(_machdep, OID_AUTO, wfe_rec_none,
- CTLFLAG_RW, &wfe_rec_none, 0,
- "");
-
-extern uint64_t wfe_rec_override_mat;
-SYSCTL_QUAD(_machdep, OID_AUTO, wfe_rec_override_mat,
- CTLFLAG_RW, &wfe_rec_override_mat,
- "");
-
-extern uint64_t wfe_rec_clamp;
-SYSCTL_QUAD(_machdep, OID_AUTO, wfe_rec_clamp,
- CTLFLAG_RW, &wfe_rec_clamp,
- "");
-
-#endif
-
-static
-SYSCTL_QUAD(_machdep, OID_AUTO, wake_abstime,
- CTLFLAG_RD, &wake_abstime,
- "Absolute Time at the last wakeup");
-
-static int
-sysctl_time_since_reset SYSCTL_HANDLER_ARGS
-{
-#pragma unused(arg1, arg2, oidp)
- uint64_t return_value = ml_get_time_since_reset();
- return SYSCTL_OUT(req, &return_value, sizeof(return_value));
-}
-
-SYSCTL_PROC(_machdep, OID_AUTO, time_since_reset,
- CTLFLAG_RD | CTLTYPE_QUAD | CTLFLAG_LOCKED,
- 0, 0, sysctl_time_since_reset, "I",
- "Continuous time since last SOC boot/wake started");
-
-static int
-sysctl_wake_conttime SYSCTL_HANDLER_ARGS
-{
-#pragma unused(arg1, arg2, oidp)
- uint64_t return_value = ml_get_conttime_wake_time();
- return SYSCTL_OUT(req, &return_value, sizeof(return_value));
-}
-
-SYSCTL_PROC(_machdep, OID_AUTO, wake_conttime,
- CTLFLAG_RD | CTLTYPE_QUAD | CTLFLAG_LOCKED,
- 0, 0, sysctl_wake_conttime, "I",
- "Continuous Time at the last wakeup");
-
-#if defined(HAS_IPI)
-static int
-cpu_signal_deferred_timer(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
-{
- int new_value = 0;
- int changed = 0;
-
- int old_value = (int)ml_cpu_signal_deferred_get_timer();
-
- int error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed);
-
- if (error == 0 && changed) {
- ml_cpu_signal_deferred_adjust_timer((uint64_t)new_value);
- }
-
- return error;
-}
-
-SYSCTL_PROC(_machdep, OID_AUTO, deferred_ipi_timeout,
- CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
- 0, 0,
- cpu_signal_deferred_timer, "I", "Deferred IPI timeout (nanoseconds)");
-
-#endif /* defined(HAS_IPI) */
-
-/*
- * For source compatibility, here's some machdep.cpu mibs that
- * use host_info() to simulate reasonable answers.
- */
-
-SYSCTL_NODE(_machdep, OID_AUTO, cpu, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
- "CPU info");
-
-static int
-arm_host_info SYSCTL_HANDLER_ARGS
-{
- __unused struct sysctl_oid *unused_oidp = oidp;
-
- host_basic_info_data_t hinfo;
- mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
-#define BSD_HOST 1
- kern_return_t kret = host_info((host_t)BSD_HOST,
- HOST_BASIC_INFO, (host_info_t)&hinfo, &count);
- if (KERN_SUCCESS != kret) {
- return EINVAL;
- }
-
- if (sizeof(uint32_t) != arg2) {
- panic("size mismatch");
- }
-
- uintptr_t woffset = (uintptr_t)arg1 / sizeof(uint32_t);
- uint32_t datum = *(uint32_t *)(((uint32_t *)&hinfo) + woffset);
- return SYSCTL_OUT(req, &datum, sizeof(datum));
-}
-
-/*
- * machdep.cpu.cores_per_package
- *
- * x86: derived from CPUID data.
- * ARM: how many physical cores we have in the AP; aka hw.physicalcpu_max
- */
-static
-SYSCTL_PROC(_machdep_cpu, OID_AUTO, cores_per_package,
- CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
- (void *)offsetof(host_basic_info_data_t, physical_cpu_max),
- sizeof(integer_t),
- arm_host_info, "I", "CPU cores per package");
-
-/*
- * machdep.cpu.core_count
- *
- * x86: derived from CPUID data.
- * ARM: # active physical cores in the AP; aka hw.physicalcpu
- */
-static
-SYSCTL_PROC(_machdep_cpu, OID_AUTO, core_count,
- CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
- (void *)offsetof(host_basic_info_data_t, physical_cpu),
- sizeof(integer_t),
- arm_host_info, "I", "Number of enabled cores per package");
-
-/*
- * machdep.cpu.logical_per_package
- *
- * x86: derived from CPUID data. Returns ENOENT if HTT bit not set, but
- * most x64 CPUs have that, so assume it's available.
- * ARM: total # logical cores in the AP; aka hw.logicalcpu_max
- */
-static
-SYSCTL_PROC(_machdep_cpu, OID_AUTO, logical_per_package,
- CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
- (void *)offsetof(host_basic_info_data_t, logical_cpu_max),
- sizeof(integer_t),
- arm_host_info, "I", "CPU logical cpus per package");
-
-/*
- * machdep.cpu.thread_count
- *
- * x86: derived from CPUID data.
- * ARM: # active logical cores in the AP; aka hw.logicalcpu
- */
-static
-SYSCTL_PROC(_machdep_cpu, OID_AUTO, thread_count,
- CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
- (void *)offsetof(host_basic_info_data_t, logical_cpu),
- sizeof(integer_t),
- arm_host_info, "I", "Number of enabled threads per package");
-
-static SECURITY_READ_ONLY_LATE(char*) brand_string = NULL;
-static SECURITY_READ_ONLY_LATE(size_t) brand_string_len = 0;
-
-/*
- * SecureDTLookupEntry() is only guaranteed to work before PE_init_iokit(),
- * so we load the brand string (if available) in a startup handler.
- */
-__startup_func
-static void
-sysctl_load_brand_string(void)
-{
- DTEntry node;
- void const *value = NULL;
- unsigned int size = 0;
-
- if (kSuccess != SecureDTLookupEntry(0, "/product", &node)) {
- return;
- }
-
- if (kSuccess != SecureDTGetProperty(node, "product-soc-name", (void const **) &value, &size)) {
- return;
- }
-
- if (size == 0) {
- return;
- }
-
- brand_string = zalloc_permanent(size, ZALIGN_NONE);
- if (brand_string == NULL) {
- return;
- }
-
- memcpy(brand_string, value, size);
- brand_string_len = size;
-}
-STARTUP(SYSCTL, STARTUP_RANK_MIDDLE, sysctl_load_brand_string);
-
-/*
- * machdep.cpu.brand_string
- *
- * x86: derived from CPUID data.
- * ARM: Grab the product string from the device tree, if it exists.
- * Otherwise, cons something up from the CPUID register.
- * the value is already exported via the commpage. So keep it simple.
- */
-static int
-make_brand_string SYSCTL_HANDLER_ARGS
-{
- __unused struct sysctl_oid *unused_oidp = oidp;
- __unused void *unused_arg1 = arg1;
- __unused int unused_arg2 = arg2;
-
- if (brand_string != NULL) {
- return SYSCTL_OUT(req, brand_string, brand_string_len);
- }
-
- const char *impl;
-
- switch (cpuid_info()->arm_info.arm_implementor) {
- case CPU_VID_APPLE:
- impl = "Apple";
- break;
- case CPU_VID_ARM:
- impl = "ARM";
- break;
- default:
- impl = "ARM architecture";
- break;
- }
-
- char buf[80];
- snprintf(buf, sizeof(buf), "%s processor", impl);
- return SYSCTL_OUT(req, buf, strlen(buf) + 1);
-}
-
-SYSCTL_PROC(_machdep_cpu, OID_AUTO, brand_string,
- CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_LOCKED,
- 0, 0, make_brand_string, "A", "CPU brand string");
-
-
-static int
-virtual_address_size SYSCTL_HANDLER_ARGS
-{
-#pragma unused(arg1, arg2, oidp)
- int return_value = 64 - T0SZ_BOOT;
- return SYSCTL_OUT(req, &return_value, sizeof(return_value));
-}
-
-static
-SYSCTL_PROC(_machdep, OID_AUTO, virtual_address_size,
- CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
- 0, 0, virtual_address_size, "I",
- "Number of addressable bits in userspace virtual addresses");
-
-
-#if DEVELOPMENT || DEBUG
-extern uint64_t TLockTimeOut;
-SYSCTL_QUAD(_machdep, OID_AUTO, tlto,
- CTLFLAG_RW | CTLFLAG_LOCKED, &TLockTimeOut,
- "Ticket spinlock timeout (MATUs): use with care");
-
-extern uint32_t timebase_validation;
-SYSCTL_UINT(_machdep, OID_AUTO, timebase_validation,
- CTLFLAG_RW | CTLFLAG_LOCKED, &timebase_validation, 0,
- "Monotonicity validation of kernel mach_absolute_time()");
-
-#if __WKDM_ISA_2P_WORKAROUND__
-extern uint64_t wkdmdretries, wkdmdretriespb;
-extern uint32_t simulate_wkdm2p_error, wkdm_isa_2p_war_required;
-SYSCTL_QUAD(_machdep, OID_AUTO, wkdmdretries,
- CTLFLAG_RW | CTLFLAG_LOCKED, &wkdmdretries,
- "Number of WKDM errata retries");
-SYSCTL_QUAD(_machdep, OID_AUTO, wkdmdretriespb,
- CTLFLAG_RW | CTLFLAG_LOCKED, &wkdmdretriespb,
- "Number of retries where payload was on page boundary");
-SYSCTL_UINT(_machdep, OID_AUTO, simulate_wkdm2p_error,
- CTLFLAG_RW | CTLFLAG_LOCKED,
- &simulate_wkdm2p_error, 0, "");
-SYSCTL_UINT(_machdep, OID_AUTO, wkdm_isa_2p_war_required,
- CTLFLAG_RW | CTLFLAG_LOCKED,
- &wkdm_isa_2p_war_required, 0, "");
-#endif /* __WKDM_ISA_2P_WORKAROUND__ */
-
-
-/*
- * macro to generate a sysctl machdep.cpu.sysreg_* for a given system register
- * using __builtin_arm_rsr64.
- */
-#define SYSCTL_PROC_MACHDEP_CPU_SYSREG(name) \
-static int \
-sysctl_sysreg_##name SYSCTL_HANDLER_ARGS \
-{ \
-_Pragma("unused(arg1, arg2, oidp)") \
- uint64_t return_value = __builtin_arm_rsr64(#name); \
- return SYSCTL_OUT(req, &return_value, sizeof(return_value)); \
-} \
-SYSCTL_PROC(_machdep_cpu, OID_AUTO, sysreg_##name, \
- CTLFLAG_RD | CTLTYPE_QUAD | CTLFLAG_LOCKED, \
- 0, 0, sysctl_sysreg_##name, "Q", \
- #name " register on the current CPU");
-
-
-// CPU system registers
-// ARM64: AArch64 Vector Base Address Register
-SYSCTL_PROC_MACHDEP_CPU_SYSREG(VBAR_EL1);
-// ARM64: AArch64 Memory Attribute Indirection Register
-SYSCTL_PROC_MACHDEP_CPU_SYSREG(MAIR_EL1);
-// ARM64: AArch64 Translation table base register 1
-SYSCTL_PROC_MACHDEP_CPU_SYSREG(TTBR1_EL1);
-// ARM64: AArch64 System Control Register
-SYSCTL_PROC_MACHDEP_CPU_SYSREG(SCTLR_EL1);
-// ARM64: AArch64 Translation Control Register
-SYSCTL_PROC_MACHDEP_CPU_SYSREG(TCR_EL1);
-// ARM64: AArch64 Memory Model Feature Register 0
-SYSCTL_PROC_MACHDEP_CPU_SYSREG(ID_AA64MMFR0_EL1);
-// ARM64: AArch64 Instruction Set Attribute Register 1
-SYSCTL_PROC_MACHDEP_CPU_SYSREG(ID_AA64ISAR1_EL1);
-#if APPLE_ARM64_ARCH_FAMILY
-// Apple ID Register
-SYSCTL_PROC_MACHDEP_CPU_SYSREG(AIDR_EL1);
-#endif /* APPLE_ARM64_ARCH_FAMILY */
-
-#endif /* DEVELOPMENT || DEBUG */
-
-
-#ifdef ML_IO_TIMEOUTS_ENABLED
-/*
- * Timeouts for ml_{io|phys}_{read|write}...
- * RO on DEVELOPMENT/DEBUG kernels.
- */
-
-#if DEVELOPMENT || DEBUG
-#define MMIO_TIMEOUT_FLAGS (CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED)
-#else
-#define MMIO_TIMEOUT_FLAGS (CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED)
-#endif
-
-SYSCTL_QUAD(_machdep, OID_AUTO, report_phy_read_delay, MMIO_TIMEOUT_FLAGS,
- &report_phy_read_delay_to, "Maximum time before io/phys read gets reported or panics");
-SYSCTL_QUAD(_machdep, OID_AUTO, report_phy_write_delay, MMIO_TIMEOUT_FLAGS,
- &report_phy_write_delay_to, "Maximum time before io/phys write gets reported or panics");
-SYSCTL_QUAD(_machdep, OID_AUTO, trace_phy_read_delay, MMIO_TIMEOUT_FLAGS,
- &trace_phy_read_delay_to, "Maximum time before io/phys read gets ktraced");
-SYSCTL_QUAD(_machdep, OID_AUTO, trace_phy_write_delay, MMIO_TIMEOUT_FLAGS,
- &trace_phy_write_delay_to, "Maximum time before io/phys write gets ktraced");
-
-SYSCTL_INT(_machdep, OID_AUTO, phy_read_delay_panic, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
- &phy_read_panic, 0, "if set, report-phy-read-delay timeout panics");
-SYSCTL_INT(_machdep, OID_AUTO, phy_write_delay_panic, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
- &phy_write_panic, 0, "if set, report-phy-write-delay timeout panics");
-
-#if ML_IO_SIMULATE_STRETCHED_ENABLED
-SYSCTL_QUAD(_machdep, OID_AUTO, sim_stretched_io_ns, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED,
- &simulate_stretched_io, "simulate stretched io in ml_read_io, ml_write_io");
-#endif /* ML_IO_SIMULATE_STRETCHED_ENABLED */
-
-#endif /* ML_IO_TIMEOUTS_ENABLED */
-
-int opensource_kernel = 1;
-SYSCTL_INT(_kern, OID_AUTO, opensource_kernel, CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED,
- &opensource_kernel, 0, "Opensource Kernel");
-
-static int
-machdep_ptrauth_enabled SYSCTL_HANDLER_ARGS
-{
-#pragma unused(arg1, arg2, oidp)
-
-#if __has_feature(ptrauth_calls)
- task_t task = current_task();
- int ret = !ml_task_get_disable_user_jop(task);
-#else
- const int ret = 0;
-#endif
-
- return SYSCTL_OUT(req, &ret, sizeof(ret));
-}
-
-SYSCTL_PROC(_machdep, OID_AUTO, ptrauth_enabled,
- CTLTYPE_INT | CTLFLAG_KERN | CTLFLAG_RD,
- 0, 0,
- machdep_ptrauth_enabled, "I", "");
-
-static const char _ctrr_type[] =
-#if defined(KERNEL_CTRR_VERSION)
- "ctrrv" STRINGIFY(KERNEL_CTRR_VERSION);
-#elif defined(KERNEL_INTEGRITY_KTRR)
- "ktrr";
-#elif defined(KERNEL_INTEGRITY_PV_CTRR)
- "pv";
-#else
- "none";
-#endif
-
-SYSCTL_STRING(_machdep, OID_AUTO, ctrr_type,
- CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED,
- __DECONST(char *, _ctrr_type), 0,
- "CTRR type supported by hardware/kernel");
-
-#if CONFIG_TELEMETRY && (DEBUG || DEVELOPMENT)
-extern unsigned long trap_telemetry_reported_events;
-SYSCTL_ULONG(_debug, OID_AUTO, trap_telemetry_reported_events,
- CTLFLAG_RD | CTLFLAG_LOCKED, &trap_telemetry_reported_events,
- "Number of trap telemetry events successfully reported");
-
-extern unsigned long trap_telemetry_capacity_dropped_events;
-SYSCTL_ULONG(_debug, OID_AUTO, trap_telemetry_capacity_dropped_events,
- CTLFLAG_RD | CTLFLAG_LOCKED, &trap_telemetry_capacity_dropped_events,
- "Number of trap telemetry events which were dropped due to a full RSB");
-#endif /* CONFIG_TELEMETRY && (DEBUG || DEVELOPMENT) */
-
-