[apple/xnu.git] / osfmk / arm / cpu_capabilities.h

/*
 * Copyright (c) 2007 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
#ifdef  PRIVATE

#ifndef _ARM_CPU_CAPABILITIES_H
#define _ARM_CPU_CAPABILITIES_H

#ifndef __ASSEMBLER__
#include <stdint.h>
#include <mach/vm_types.h>
#endif

#define USER_TIMEBASE_NONE   0
#define USER_TIMEBASE_SPEC   1

/*
 * This is the authoritative way to determine from user mode what
 * implementation-specific processor features are available.
 * This API only supported for Apple internal use.
 *
 */

/*
 * Bit definitions for _cpu_capabilities:
 */
#define kHasICDSBShift                  2
#define kHasICDSB                       0x00000004      // ICache Data Syncronization on DSB enabled (H13)
#define kHasNeonFP16                    0x00000008      // ARM v8.2 NEON FP16 supported
#define kCache32                        0x00000010      // cache line size is 32 bytes
#define kCache64                        0x00000020      // cache line size is 64 bytes
#define kCache128                       0x00000040      // cache line size is 128 bytes
#define kFastThreadLocalStorage         0x00000080      // TLS ptr is kept in a user-mode-readable register
#define kHasNeon                        0x00000100      // Advanced SIMD is supported
#define kHasNeonHPFP                    0x00000200      // Advanced SIMD half-precision
#define kHasVfp                         0x00000400      // VFP is supported
#define kHasUCNormalMemory              0x00000800      // Uncacheable normal memory type supported
#define kHasEvent                       0x00001000      // WFE/SVE and period event wakeup
#define kHasFMA                         0x00002000      // Fused multiply add is supported
#define kHasARMv82FHM                   0x00004000      // Optional ARMv8.2 FMLAL/FMLSL instructions (required in ARMv8.4)
#define kUP                             0x00008000      // set if (kNumCPUs == 1)
#define kNumCPUs                        0x00FF0000      // number of CPUs (see _NumCPUs() below)
#define kHasARMv8Crypto                 0x01000000      // Optional ARMv8 Crypto extensions
#define kHasARMv81Atomics               0x02000000      // ARMv8.1 Atomic instructions supported
#define kHasARMv8Crc32                  0x04000000      // Optional ARMv8 crc32 instructions (required in ARMv8.1)

#define kNumCPUsShift                   16              // see _NumCPUs() below
/*
 * Bit definitions for multiuser_config:
 */
#define kIsMultiUserDevice      0x80000000      // this device is in multiuser mode
#define kMultiUserCurrentUserMask       0x7fffffff      // the current user UID of the multiuser device

#ifndef __ASSEMBLER__
#include <sys/commpage.h>

__BEGIN_DECLS
extern int  _get_cpu_capabilities( void );
__END_DECLS

__inline static
int
_NumCPUs( void )
{
	return (_get_cpu_capabilities() & kNumCPUs) >> kNumCPUsShift;
}


typedef struct {
	volatile uint64_t       TimeBase;
	volatile uint32_t       TimeStamp_sec;
	volatile uint32_t       TimeStamp_usec;
	volatile uint32_t       TimeBaseTicks_per_sec;
	volatile uint32_t       TimeBaseTicks_per_usec;
	volatile uint64_t       TimeBase_magic;
	volatile uint32_t       TimeBase_add;
	volatile uint32_t       TimeBase_shift;
} commpage_timeofday_data_t;

__BEGIN_DECLS
extern vm_address_t                             _get_commpage_priv_address(void);
__END_DECLS

#endif /* __ASSEMBLER__ */


/*
 * The shared kernel/user "comm page(s)":
 */

#if defined(__LP64__)

#define _COMM_PAGE64_BASE_ADDRESS               (0x0000000FFFFFC000ULL) /* In TTBR0 */
#define _COMM_HIGH_PAGE64_BASE_ADDRESS  (0xFFFFFFF0001FC000ULL) /* Just below the kernel, safely in TTBR1; only used for testing */

#define _COMM_PAGE64_AREA_LENGTH                (_COMM_PAGE32_AREA_LENGTH)
#define _COMM_PAGE64_AREA_USED                  (-1)

#define _COMM_PAGE_PRIV(_addr_)                 ((_addr_) - (_COMM_PAGE_START_ADDRESS) + _get_commpage_priv_address())

#ifdef KERNEL_PRIVATE
#define _COMM_PAGE_RW_OFFSET                    (0)
#define _COMM_PAGE_AREA_LENGTH                  (PAGE_SIZE)

#define _COMM_PAGE_BASE_ADDRESS                 (_get_commpage_priv_address())
#define _COMM_PAGE_START_ADDRESS                (_get_commpage_priv_address())
#else /* KERNEL_PRIVATE */
#define _COMM_PAGE_AREA_LENGTH                  (4096)

#define _COMM_PAGE_BASE_ADDRESS                 _COMM_PAGE64_BASE_ADDRESS
#define _COMM_PAGE_START_ADDRESS                _COMM_PAGE64_BASE_ADDRESS
#endif /* KERNEL_PRIVATE */

#else

#define _COMM_PAGE64_BASE_ADDRESS               (-1)
#define _COMM_PAGE64_AREA_LENGTH                (-1)
#define _COMM_PAGE64_AREA_USED                  (-1)

// macro to change a user comm page address to one that is accessible from privileged mode
// this macro is stubbed as PAN is not available on AARCH32,
// but this may still be required for compatibility
#define _COMM_PAGE_PRIV(_addr_)                 (_addr_)

#ifdef KERNEL_PRIVATE
#define _COMM_PAGE_RW_OFFSET                    (_get_commpage_priv_address()-_COMM_PAGE_BASE_ADDRESS)
#define _COMM_PAGE_AREA_LENGTH                  (PAGE_SIZE)
#else
#define _COMM_PAGE_AREA_LENGTH                  (4096)
#endif

#define _COMM_PAGE_BASE_ADDRESS                 _COMM_PAGE32_BASE_ADDRESS
#define _COMM_PAGE_START_ADDRESS                _COMM_PAGE32_BASE_ADDRESS

#endif

#define _COMM_PAGE32_BASE_ADDRESS               (0xFFFF4000)            /* Must be outside of normal map bounds */
#define _COMM_PAGE32_AREA_LENGTH                (_COMM_PAGE_AREA_LENGTH)

#define _COMM_PAGE_TEXT_START                   (-1)
#define _COMM_PAGE32_TEXT_START                 (-1)
#define _COMM_PAGE64_TEXT_START                 (-1)
#define _COMM_PAGE_PFZ_START_OFFSET             (-1)
#define _COMM_PAGE_PFZ_END_OFFSET               (-1)

#define _COMM_PAGE32_OBJC_SIZE                  0ULL
#define _COMM_PAGE32_OBJC_BASE                  0ULL
#define _COMM_PAGE64_OBJC_SIZE                  0ULL
#define _COMM_PAGE64_OBJC_BASE                  0ULL

/*
 * data in the comm pages
 * apply _COMM_PAGE_PRIV macro to use these in privileged mode
 */
#define _COMM_PAGE_SIGNATURE                    (_COMM_PAGE_START_ADDRESS+0x000)        // first few bytes are a signature
#define _COMM_PAGE_SIGNATURELEN                 (0x10)
#define _COMM_PAGE_VERSION                      (_COMM_PAGE_START_ADDRESS+0x01E)        // 16-bit version#
#define _COMM_PAGE_THIS_VERSION                 3                                       // version of the commarea format

#define _COMM_PAGE_CPU_CAPABILITIES             (_COMM_PAGE_START_ADDRESS+0x020)        // uint32_t _cpu_capabilities
#define _COMM_PAGE_NCPUS                        (_COMM_PAGE_START_ADDRESS+0x022)        // uint8_t number of configured CPUs
#define _COMM_PAGE_USER_PAGE_SHIFT_32           (_COMM_PAGE_START_ADDRESS+0x024)        // VM page shift for 32-bit processes
#define _COMM_PAGE_USER_PAGE_SHIFT_64           (_COMM_PAGE_START_ADDRESS+0x025)        // VM page shift for 64-bit processes
#define _COMM_PAGE_CACHE_LINESIZE               (_COMM_PAGE_START_ADDRESS+0x026)        // uint16_t cache line size
#define _COMM_PAGE_SCHED_GEN                    (_COMM_PAGE_START_ADDRESS+0x028)        // uint32_t scheduler generation number (count of pre-emptions)
#define _COMM_PAGE_SPIN_COUNT                   (_COMM_PAGE_START_ADDRESS+0x02C)        // uint32_t max spin count for mutex's
#define _COMM_PAGE_MEMORY_PRESSURE              (_COMM_PAGE_START_ADDRESS+0x030)        // uint32_t copy of vm_memory_pressure
#define _COMM_PAGE_ACTIVE_CPUS                  (_COMM_PAGE_START_ADDRESS+0x034)        // uint8_t number of active CPUs (hw.activecpu)
#define _COMM_PAGE_PHYSICAL_CPUS                (_COMM_PAGE_START_ADDRESS+0x035)        // uint8_t number of physical CPUs (hw.physicalcpu_max)
#define _COMM_PAGE_LOGICAL_CPUS                 (_COMM_PAGE_START_ADDRESS+0x036)        // uint8_t number of logical CPUs (hw.logicalcpu_max)
#define _COMM_PAGE_KERNEL_PAGE_SHIFT            (_COMM_PAGE_START_ADDRESS+0x037)        // uint8_t kernel vm page shift */
#define _COMM_PAGE_MEMORY_SIZE                  (_COMM_PAGE_START_ADDRESS+0x038)        // uint64_t max memory size */
#define _COMM_PAGE_TIMEOFDAY_DATA               (_COMM_PAGE_START_ADDRESS+0x040)        // used by gettimeofday(). Currently, sizeof(commpage_timeofday_data_t) = 40. A new struct is used on gettimeofday but space is reserved on the commpage for compatibility
#define _COMM_PAGE_CPUFAMILY                    (_COMM_PAGE_START_ADDRESS+0x080)        // used by memcpy() resolver
#define _COMM_PAGE_DEV_FIRM                     (_COMM_PAGE_START_ADDRESS+0x084)        // uint32_t handle on PE_i_can_has_debugger
#define _COMM_PAGE_TIMEBASE_OFFSET              (_COMM_PAGE_START_ADDRESS+0x088)        // uint64_t timebase offset for constructing mach_absolute_time()
#define _COMM_PAGE_USER_TIMEBASE                (_COMM_PAGE_START_ADDRESS+0x090)        // uint8_t is userspace mach_absolute_time supported (can read the timebase)
#define _COMM_PAGE_CONT_HWCLOCK                 (_COMM_PAGE_START_ADDRESS+0x091)        // uint8_t is always-on hardware clock present for mach_continuous_time()
#define _COMM_PAGE_DTRACE_DOF_ENABLED           (_COMM_PAGE_START_ADDRESS+0x092)        // uint8_t 0 if userspace DOF disable, 1 if enabled
#define _COMM_PAGE_UNUSED0                      (_COMM_PAGE_START_ADDRESS+0x093)        // 5 unused bytes
#define _COMM_PAGE_CONT_TIMEBASE                (_COMM_PAGE_START_ADDRESS+0x098)        // uint64_t base for mach_continuous_time()
#define _COMM_PAGE_BOOTTIME_USEC                (_COMM_PAGE_START_ADDRESS+0x0A0)        // uint64_t boottime in microseconds

// aligning to 64byte for cacheline size
#define _COMM_PAGE_APPROX_TIME                  (_COMM_PAGE_START_ADDRESS+0x0C0)        // uint64_t last known mach_absolute_time()
#define _COMM_PAGE_APPROX_TIME_SUPPORTED        (_COMM_PAGE_START_ADDRESS+0x0C8)        // uint8_t is mach_approximate_time supported
#define _COMM_PAGE_UNUSED1                      (_COMM_PAGE_START_ADDRESS+0x0C9)        // 55 unused bytes, align next mutable value to a separate cache line

#define _COMM_PAGE_KDEBUG_ENABLE                (_COMM_PAGE_START_ADDRESS+0x100)        // uint32_t export kdebug status bits to userspace
#define _COMM_PAGE_ATM_DIAGNOSTIC_CONFIG        (_COMM_PAGE_START_ADDRESS+0x104)        // uint32_t export "atm_diagnostic_config" to userspace
#define _COMM_PAGE_MULTIUSER_CONFIG             (_COMM_PAGE_START_ADDRESS+0x108)        // uint32_t export "multiuser_config" to userspace


#define _COMM_PAGE_NEWTIMEOFDAY_DATA            (_COMM_PAGE_START_ADDRESS+0x120)        // used by gettimeofday(). Currently, sizeof(new_commpage_timeofday_data_t) = 40.
#define _COMM_PAGE_REMOTETIME_PARAMS            (_COMM_PAGE_START_ADDRESS+0x148)        // used by mach_bridge_remote_time(). Currently, sizeof(struct bt_params) = 24
#define _COMM_PAGE_DYLD_SYSTEM_FLAGS            (_COMM_PAGE_START_ADDRESS+0x160)        // uint64_t export kern.dyld_system_flags to userspace

// aligning to 128 bytes for cacheline/fabric size
#define _COMM_PAGE_CPU_QUIESCENT_COUNTER        (_COMM_PAGE_START_ADDRESS+0x180)        // uint64_t, but reserve the whole 128 (0x80) bytes

#define _COMM_PAGE_END                          (_COMM_PAGE_START_ADDRESS+0x1000)       // end of common page

#endif /* _ARM_CPU_CAPABILITIES_H */
#endif /* PRIVATE */
Commit	Line	Data
5ba3f43e A	1	/*
	2	* Copyright (c) 2007 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
0a7de745	28	#ifdef PRIVATE
5ba3f43e A	29
	30	#ifndef _ARM_CPU_CAPABILITIES_H
	31	#define _ARM_CPU_CAPABILITIES_H
	32
0a7de745	33	#ifndef __ASSEMBLER__
5ba3f43e	34	#include <stdint.h>
5ba3f43e A	35	#include <mach/vm_types.h>
5ba3f43e A	36	#endif
0a7de745	37
cb323159 A	38	#define USER_TIMEBASE_NONE 0
	39	#define USER_TIMEBASE_SPEC 1
	40
5ba3f43e A	41	/*
	42	* This is the authoritative way to determine from user mode what
	43	* implementation-specific processor features are available.
	44	* This API only supported for Apple internal use.
0a7de745	45	*
5ba3f43e A	46	*/
	47
	48	/*
	49	* Bit definitions for _cpu_capabilities:
	50	*/
cb323159 A	51	#define kHasICDSBShift 2
cb323159 A	52	#define kHasICDSB 0x00000004 // ICache Data Syncronization on DSB enabled (H13)
0a7de745 A	53	#define kHasNeonFP16 0x00000008 // ARM v8.2 NEON FP16 supported
	54	#define kCache32 0x00000010 // cache line size is 32 bytes
	55	#define kCache64 0x00000020 // cache line size is 64 bytes
	56	#define kCache128 0x00000040 // cache line size is 128 bytes
	57	#define kFastThreadLocalStorage 0x00000080 // TLS ptr is kept in a user-mode-readable register
	58	#define kHasNeon 0x00000100 // Advanced SIMD is supported
	59	#define kHasNeonHPFP 0x00000200 // Advanced SIMD half-precision
	60	#define kHasVfp 0x00000400 // VFP is supported
cb323159	61	#define kHasUCNormalMemory 0x00000800 // Uncacheable normal memory type supported
0a7de745 A	62	#define kHasEvent 0x00001000 // WFE/SVE and period event wakeup
0a7de745 A	63	#define kHasFMA 0x00002000 // Fused multiply add is supported
cb323159	64	#define kHasARMv82FHM 0x00004000 // Optional ARMv8.2 FMLAL/FMLSL instructions (required in ARMv8.4)
0a7de745 A	65	#define kUP 0x00008000 // set if (kNumCPUs == 1)
	66	#define kNumCPUs 0x00FF0000 // number of CPUs (see _NumCPUs() below)
	67	#define kHasARMv8Crypto 0x01000000 // Optional ARMv8 Crypto extensions
	68	#define kHasARMv81Atomics 0x02000000 // ARMv8.1 Atomic instructions supported
	69	#define kHasARMv8Crc32 0x04000000 // Optional ARMv8 crc32 instructions (required in ARMv8.1)
	70
cb323159	71	#define kNumCPUsShift 16 // see _NumCPUs() below
0a7de745 A	72	/*
	73	* Bit definitions for multiuser_config:
	74	*/
	75	#define kIsMultiUserDevice 0x80000000 // this device is in multiuser mode
	76	#define kMultiUserCurrentUserMask 0x7fffffff // the current user UID of the multiuser device
	77
	78	#ifndef __ASSEMBLER__
5ba3f43e A	79	#include <sys/commpage.h>
5ba3f43e A	80
cb323159	81	__BEGIN_DECLS
5ba3f43e	82	extern int _get_cpu_capabilities( void );
cb323159	83	__END_DECLS
5ba3f43e A	84
5ba3f43e A	85	__inline static
0a7de745 A	86	int
0a7de745 A	87	_NumCPUs( void )
5ba3f43e A	88	{
	89	return (_get_cpu_capabilities() & kNumCPUs) >> kNumCPUsShift;
	90	}
	91
cb323159	92
5ba3f43e A	93	typedef struct {
	94	volatile uint64_t TimeBase;
	95	volatile uint32_t TimeStamp_sec;
	96	volatile uint32_t TimeStamp_usec;
	97	volatile uint32_t TimeBaseTicks_per_sec;
	98	volatile uint32_t TimeBaseTicks_per_usec;
0a7de745 A	99	volatile uint64_t TimeBase_magic;
	100	volatile uint32_t TimeBase_add;
	101	volatile uint32_t TimeBase_shift;
5ba3f43e A	102	} commpage_timeofday_data_t;
5ba3f43e A	103
cb323159	104	__BEGIN_DECLS
0a7de745	105	extern vm_address_t _get_commpage_priv_address(void);
cb323159	106	__END_DECLS
d9a64523	107
5ba3f43e A	108	#endif /* __ASSEMBLER__ */
	109
	110
	111	/*
	112	* The shared kernel/user "comm page(s)":
	113	*/
	114
d9a64523	115	#if defined(__LP64__)
5ba3f43e	116
0a7de745 A	117	#define _COMM_PAGE64_BASE_ADDRESS (0x0000000FFFFFC000ULL) /* In TTBR0 */
0a7de745 A	118	#define _COMM_HIGH_PAGE64_BASE_ADDRESS (0xFFFFFFF0001FC000ULL) /* Just below the kernel, safely in TTBR1; only used for testing */
5ba3f43e	119
0a7de745 A	120	#define _COMM_PAGE64_AREA_LENGTH (_COMM_PAGE32_AREA_LENGTH)
0a7de745 A	121	#define _COMM_PAGE64_AREA_USED (-1)
5ba3f43e	122
0a7de745	123	#define _COMM_PAGE_PRIV(_addr_) ((_addr_) - (_COMM_PAGE_START_ADDRESS) + _get_commpage_priv_address())
5ba3f43e A	124
5ba3f43e A	125	#ifdef KERNEL_PRIVATE
0a7de745 A	126	#define _COMM_PAGE_RW_OFFSET (0)
0a7de745 A	127	#define _COMM_PAGE_AREA_LENGTH (PAGE_SIZE)
5ba3f43e	128
0a7de745 A	129	#define _COMM_PAGE_BASE_ADDRESS (_get_commpage_priv_address())
0a7de745 A	130	#define _COMM_PAGE_START_ADDRESS (_get_commpage_priv_address())
5c9f4661	131	#else /* KERNEL_PRIVATE */
0a7de745	132	#define _COMM_PAGE_AREA_LENGTH (4096)
5ba3f43e	133
0a7de745 A	134	#define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE64_BASE_ADDRESS
0a7de745 A	135	#define _COMM_PAGE_START_ADDRESS _COMM_PAGE64_BASE_ADDRESS
5c9f4661	136	#endif /* KERNEL_PRIVATE */
5ba3f43e	137
d9a64523	138	#else
5ba3f43e	139
0a7de745 A	140	#define _COMM_PAGE64_BASE_ADDRESS (-1)
	141	#define _COMM_PAGE64_AREA_LENGTH (-1)
	142	#define _COMM_PAGE64_AREA_USED (-1)
5ba3f43e A	143
	144	// macro to change a user comm page address to one that is accessible from privileged mode
	145	// this macro is stubbed as PAN is not available on AARCH32,
	146	// but this may still be required for compatibility
0a7de745	147	#define _COMM_PAGE_PRIV(_addr_) (_addr_)
5ba3f43e A	148
5ba3f43e A	149	#ifdef KERNEL_PRIVATE
0a7de745 A	150	#define _COMM_PAGE_RW_OFFSET (_get_commpage_priv_address()-_COMM_PAGE_BASE_ADDRESS)
0a7de745 A	151	#define _COMM_PAGE_AREA_LENGTH (PAGE_SIZE)
5ba3f43e	152	#else
0a7de745	153	#define _COMM_PAGE_AREA_LENGTH (4096)
5ba3f43e A	154	#endif
5ba3f43e A	155
0a7de745 A	156	#define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE32_BASE_ADDRESS
0a7de745 A	157	#define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_BASE_ADDRESS
5ba3f43e	158
5ba3f43e A	159	#endif
5ba3f43e A	160
0a7de745 A	161	#define _COMM_PAGE32_BASE_ADDRESS (0xFFFF4000) /* Must be outside of normal map bounds */
	162	#define _COMM_PAGE32_AREA_LENGTH (_COMM_PAGE_AREA_LENGTH)
	163
	164	#define _COMM_PAGE_TEXT_START (-1)
	165	#define _COMM_PAGE32_TEXT_START (-1)
	166	#define _COMM_PAGE64_TEXT_START (-1)
	167	#define _COMM_PAGE_PFZ_START_OFFSET (-1)
	168	#define _COMM_PAGE_PFZ_END_OFFSET (-1)
5ba3f43e	169
0a7de745 A	170	#define _COMM_PAGE32_OBJC_SIZE 0ULL
	171	#define _COMM_PAGE32_OBJC_BASE 0ULL
	172	#define _COMM_PAGE64_OBJC_SIZE 0ULL
	173	#define _COMM_PAGE64_OBJC_BASE 0ULL
5ba3f43e	174
5ba3f43e A	175	/*
	176	* data in the comm pages
	177	* apply _COMM_PAGE_PRIV macro to use these in privileged mode
	178	*/
0a7de745	179	#define _COMM_PAGE_SIGNATURE (_COMM_PAGE_START_ADDRESS+0x000) // first few bytes are a signature
cb323159	180	#define _COMM_PAGE_SIGNATURELEN (0x10)
0a7de745 A	181	#define _COMM_PAGE_VERSION (_COMM_PAGE_START_ADDRESS+0x01E) // 16-bit version#
	182	#define _COMM_PAGE_THIS_VERSION 3 // version of the commarea format
	183
	184	#define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_START_ADDRESS+0x020) // uint32_t _cpu_capabilities
	185	#define _COMM_PAGE_NCPUS (_COMM_PAGE_START_ADDRESS+0x022) // uint8_t number of configured CPUs
	186	#define _COMM_PAGE_USER_PAGE_SHIFT_32 (_COMM_PAGE_START_ADDRESS+0x024) // VM page shift for 32-bit processes
	187	#define _COMM_PAGE_USER_PAGE_SHIFT_64 (_COMM_PAGE_START_ADDRESS+0x025) // VM page shift for 64-bit processes
	188	#define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_START_ADDRESS+0x026) // uint16_t cache line size
	189	#define _COMM_PAGE_SCHED_GEN (_COMM_PAGE_START_ADDRESS+0x028) // uint32_t scheduler generation number (count of pre-emptions)
	190	#define _COMM_PAGE_SPIN_COUNT (_COMM_PAGE_START_ADDRESS+0x02C) // uint32_t max spin count for mutex's
	191	#define _COMM_PAGE_MEMORY_PRESSURE (_COMM_PAGE_START_ADDRESS+0x030) // uint32_t copy of vm_memory_pressure
	192	#define _COMM_PAGE_ACTIVE_CPUS (_COMM_PAGE_START_ADDRESS+0x034) // uint8_t number of active CPUs (hw.activecpu)
	193	#define _COMM_PAGE_PHYSICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x035) // uint8_t number of physical CPUs (hw.physicalcpu_max)
	194	#define _COMM_PAGE_LOGICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x036) // uint8_t number of logical CPUs (hw.logicalcpu_max)
	195	#define _COMM_PAGE_KERNEL_PAGE_SHIFT (_COMM_PAGE_START_ADDRESS+0x037) // uint8_t kernel vm page shift */
	196	#define _COMM_PAGE_MEMORY_SIZE (_COMM_PAGE_START_ADDRESS+0x038) // uint64_t max memory size */
	197	#define _COMM_PAGE_TIMEOFDAY_DATA (_COMM_PAGE_START_ADDRESS+0x040) // used by gettimeofday(). Currently, sizeof(commpage_timeofday_data_t) = 40. A new struct is used on gettimeofday but space is reserved on the commpage for compatibility
	198	#define _COMM_PAGE_CPUFAMILY (_COMM_PAGE_START_ADDRESS+0x080) // used by memcpy() resolver
	199	#define _COMM_PAGE_DEV_FIRM (_COMM_PAGE_START_ADDRESS+0x084) // uint32_t handle on PE_i_can_has_debugger
	200	#define _COMM_PAGE_TIMEBASE_OFFSET (_COMM_PAGE_START_ADDRESS+0x088) // uint64_t timebase offset for constructing mach_absolute_time()
	201	#define _COMM_PAGE_USER_TIMEBASE (_COMM_PAGE_START_ADDRESS+0x090) // uint8_t is userspace mach_absolute_time supported (can read the timebase)
	202	#define _COMM_PAGE_CONT_HWCLOCK (_COMM_PAGE_START_ADDRESS+0x091) // uint8_t is always-on hardware clock present for mach_continuous_time()
cb323159 A	203	#define _COMM_PAGE_DTRACE_DOF_ENABLED (_COMM_PAGE_START_ADDRESS+0x092) // uint8_t 0 if userspace DOF disable, 1 if enabled
cb323159 A	204	#define _COMM_PAGE_UNUSED0 (_COMM_PAGE_START_ADDRESS+0x093) // 5 unused bytes
0a7de745 A	205	#define _COMM_PAGE_CONT_TIMEBASE (_COMM_PAGE_START_ADDRESS+0x098) // uint64_t base for mach_continuous_time()
0a7de745 A	206	#define _COMM_PAGE_BOOTTIME_USEC (_COMM_PAGE_START_ADDRESS+0x0A0) // uint64_t boottime in microseconds
5ba3f43e A	207
5ba3f43e A	208	// aligning to 64byte for cacheline size
0a7de745 A	209	#define _COMM_PAGE_APPROX_TIME (_COMM_PAGE_START_ADDRESS+0x0C0) // uint64_t last known mach_absolute_time()
	210	#define _COMM_PAGE_APPROX_TIME_SUPPORTED (_COMM_PAGE_START_ADDRESS+0x0C8) // uint8_t is mach_approximate_time supported
	211	#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x0C9) // 55 unused bytes, align next mutable value to a separate cache line
5ba3f43e	212
0a7de745 A	213	#define _COMM_PAGE_KDEBUG_ENABLE (_COMM_PAGE_START_ADDRESS+0x100) // uint32_t export kdebug status bits to userspace
	214	#define _COMM_PAGE_ATM_DIAGNOSTIC_CONFIG (_COMM_PAGE_START_ADDRESS+0x104) // uint32_t export "atm_diagnostic_config" to userspace
	215	#define _COMM_PAGE_MULTIUSER_CONFIG (_COMM_PAGE_START_ADDRESS+0x108) // uint32_t export "multiuser_config" to userspace
5ba3f43e A	216
5ba3f43e A	217
0a7de745 A	218	#define _COMM_PAGE_NEWTIMEOFDAY_DATA (_COMM_PAGE_START_ADDRESS+0x120) // used by gettimeofday(). Currently, sizeof(new_commpage_timeofday_data_t) = 40.
0a7de745 A	219	#define _COMM_PAGE_REMOTETIME_PARAMS (_COMM_PAGE_START_ADDRESS+0x148) // used by mach_bridge_remote_time(). Currently, sizeof(struct bt_params) = 24
cb323159	220	#define _COMM_PAGE_DYLD_SYSTEM_FLAGS (_COMM_PAGE_START_ADDRESS+0x160) // uint64_t export kern.dyld_system_flags to userspace
d26ffc64	221
d9a64523 A	222	// aligning to 128 bytes for cacheline/fabric size
	223	#define _COMM_PAGE_CPU_QUIESCENT_COUNTER (_COMM_PAGE_START_ADDRESS+0x180) // uint64_t, but reserve the whole 128 (0x80) bytes
	224
0a7de745	225	#define _COMM_PAGE_END (_COMM_PAGE_START_ADDRESS+0x1000) // end of common page
5ba3f43e A	226
	227	#endif /* _ARM_CPU_CAPABILITIES_H */
	228	#endif /* PRIVATE */