This is xnu-11215.1.10. See this file in:
/*
* 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>
#if HYPERVISOR
#include <kern/hv_support.h>
#include <kern/bits.h>
#endif
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", "");