include/xen/interface/platform.h - maze/linux - Git at Google

 /******************************************************************************
  * platform.h
  *
  * Hardware platform operations. Intended for use by domain-0 kernel.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to
  * deal in the Software without restriction, including without limitation the
  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  * sell copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2002-2006, K Fraser
  */

 #ifndef __XEN_PUBLIC_PLATFORM_H__
 #define __XEN_PUBLIC_PLATFORM_H__

 #include "xen.h"

 #define XENPF_INTERFACE_VERSION 0x03000001

 /*
  * Set clock such that it would read <secs,nsecs> after 00:00:00 UTC,
  * 1 January, 1970 if the current system time was <system_time>.
  */
 #define XENPF_settime             17
 struct xenpf_settime {
 	/* IN variables. */
 	uint32_t secs;
 	uint32_t nsecs;
 	uint64_t system_time;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime_t);

 /*
  * Request memory range (@mfn, @mfn+@nr_mfns-1) to have type @type.
  * On x86, @type is an architecture-defined MTRR memory type.
  * On success, returns the MTRR that was used (@reg) and a handle that can
  * be passed to XENPF_DEL_MEMTYPE to accurately tear down the new setting.
  * (x86-specific).
  */
 #define XENPF_add_memtype         31
 struct xenpf_add_memtype {
 	/* IN variables. */
 	unsigned long mfn;
 	uint64_t nr_mfns;
 	uint32_t type;
 	/* OUT variables. */
 	uint32_t handle;
 	uint32_t reg;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_add_memtype_t);

 /*
  * Tear down an existing memory-range type. If @handle is remembered then it
  * should be passed in to accurately tear down the correct setting (in case
  * of overlapping memory regions with differing types). If it is not known
  * then @handle should be set to zero. In all cases @reg must be set.
  * (x86-specific).
  */
 #define XENPF_del_memtype         32
 struct xenpf_del_memtype {
 	/* IN variables. */
 	uint32_t handle;
 	uint32_t reg;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_del_memtype_t);

 /* Read current type of an MTRR (x86-specific). */
 #define XENPF_read_memtype        33
 struct xenpf_read_memtype {
 	/* IN variables. */
 	uint32_t reg;
 	/* OUT variables. */
 	unsigned long mfn;
 	uint64_t nr_mfns;
 	uint32_t type;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_read_memtype_t);

 #define XENPF_microcode_update    35
 struct xenpf_microcode_update {
 	/* IN variables. */
 	GUEST_HANDLE(void) data;          /* Pointer to microcode data */
 	uint32_t length;                  /* Length of microcode data. */
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_microcode_update_t);

 #define XENPF_platform_quirk      39
 #define QUIRK_NOIRQBALANCING      1 /* Do not restrict IO-APIC RTE targets */
 #define QUIRK_IOAPIC_BAD_REGSEL   2 /* IO-APIC REGSEL forgets its value    */
 #define QUIRK_IOAPIC_GOOD_REGSEL  3 /* IO-APIC REGSEL behaves properly     */
 struct xenpf_platform_quirk {
 	/* IN variables. */
 	uint32_t quirk_id;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_platform_quirk_t);

 #define XENPF_firmware_info       50
 #define XEN_FW_DISK_INFO          1 /* from int 13 AH=08/41/48 */
 #define XEN_FW_DISK_MBR_SIGNATURE 2 /* from MBR offset 0x1b8 */
 #define XEN_FW_VBEDDC_INFO        3 /* from int 10 AX=4f15 */
 struct xenpf_firmware_info {
 	/* IN variables. */
 	uint32_t type;
 	uint32_t index;
 	/* OUT variables. */
 	union {
 		struct {
 			/* Int13, Fn48: Check Extensions Present. */
 			uint8_t device;                   /* %dl: bios device number */
 			uint8_t version;                  /* %ah: major version      */
 			uint16_t interface_support;       /* %cx: support bitmap     */
 			/* Int13, Fn08: Legacy Get Device Parameters. */
 			uint16_t legacy_max_cylinder;     /* %cl[7:6]:%ch: max cyl # */
 			uint8_t legacy_max_head;          /* %dh: max head #         */
 			uint8_t legacy_sectors_per_track; /* %cl[5:0]: max sector #  */
 			/* Int13, Fn41: Get Device Parameters (as filled into %ds:%esi). */
 			/* NB. First uint16_t of buffer must be set to buffer size.      */
 			GUEST_HANDLE(void) edd_params;
 		} disk_info; /* XEN_FW_DISK_INFO */
 		struct {
 			uint8_t device;                   /* bios device number  */
 			uint32_t mbr_signature;           /* offset 0x1b8 in mbr */
 		} disk_mbr_signature; /* XEN_FW_DISK_MBR_SIGNATURE */
 		struct {
 			/* Int10, AX=4F15: Get EDID info. */
 			uint8_t capabilities;
 			uint8_t edid_transfer_time;
 			/* must refer to 128-byte buffer */
 			GUEST_HANDLE(uchar) edid;
 		} vbeddc_info; /* XEN_FW_VBEDDC_INFO */
 	} u;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_firmware_info_t);

 #define XENPF_enter_acpi_sleep    51
 struct xenpf_enter_acpi_sleep {
 	/* IN variables */
 	uint16_t pm1a_cnt_val;      /* PM1a control value. */
 	uint16_t pm1b_cnt_val;      /* PM1b control value. */
 	uint32_t sleep_state;       /* Which state to enter (Sn). */
 	uint32_t flags;             /* Must be zero. */
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_enter_acpi_sleep_t);

 #define XENPF_change_freq         52
 struct xenpf_change_freq {
 	/* IN variables */
 	uint32_t flags; /* Must be zero. */
 	uint32_t cpu;   /* Physical cpu. */
 	uint64_t freq;  /* New frequency (Hz). */
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_change_freq_t);

 /*
  * Get idle times (nanoseconds since boot) for physical CPUs specified in the
  * @cpumap_bitmap with range [0..@cpumap_nr_cpus-1]. The @idletime array is
  * indexed by CPU number; only entries with the corresponding @cpumap_bitmap
  * bit set are written to. On return, @cpumap_bitmap is modified so that any
  * non-existent CPUs are cleared. Such CPUs have their @idletime array entry
  * cleared.
  */
 #define XENPF_getidletime         53
 struct xenpf_getidletime {
 	/* IN/OUT variables */
 	/* IN: CPUs to interrogate; OUT: subset of IN which are present */
 	GUEST_HANDLE(uchar) cpumap_bitmap;
 	/* IN variables */
 	/* Size of cpumap bitmap. */
 	uint32_t cpumap_nr_cpus;
 	/* Must be indexable for every cpu in cpumap_bitmap. */
 	GUEST_HANDLE(uint64_t) idletime;
 	/* OUT variables */
 	/* System time when the idletime snapshots were taken. */
 	uint64_t now;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_getidletime_t);

 #define XENPF_set_processor_pminfo      54

 /* ability bits */
 #define XEN_PROCESSOR_PM_CX	1
 #define XEN_PROCESSOR_PM_PX	2
 #define XEN_PROCESSOR_PM_TX	4

 /* cmd type */
 #define XEN_PM_CX   0
 #define XEN_PM_PX   1
 #define XEN_PM_TX   2

 /* Px sub info type */
 #define XEN_PX_PCT   1
 #define XEN_PX_PSS   2
 #define XEN_PX_PPC   4
 #define XEN_PX_PSD   8

 struct xen_power_register {
 	uint32_t     space_id;
 	uint32_t     bit_width;
 	uint32_t     bit_offset;
 	uint32_t     access_size;
 	uint64_t     address;
 };

 struct xen_processor_csd {
 	uint32_t    domain;      /* domain number of one dependent group */
 	uint32_t    coord_type;  /* coordination type */
 	uint32_t    num;         /* number of processors in same domain */
 };
 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_csd);

 struct xen_processor_cx {
 	struct xen_power_register  reg; /* GAS for Cx trigger register */
 	uint8_t     type;     /* cstate value, c0: 0, c1: 1, ... */
 	uint32_t    latency;  /* worst latency (ms) to enter/exit this cstate */
 	uint32_t    power;    /* average power consumption(mW) */
 	uint32_t    dpcnt;    /* number of dependency entries */
 	GUEST_HANDLE(xen_processor_csd) dp; /* NULL if no dependency */
 };
 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_cx);

 struct xen_processor_flags {
 	uint32_t bm_control:1;
 	uint32_t bm_check:1;
 	uint32_t has_cst:1;
 	uint32_t power_setup_done:1;
 	uint32_t bm_rld_set:1;
 };

 struct xen_processor_power {
 	uint32_t count;  /* number of C state entries in array below */
 	struct xen_processor_flags flags;  /* global flags of this processor */
 	GUEST_HANDLE(xen_processor_cx) states; /* supported c states */
 };

 struct xen_pct_register {
 	uint8_t  descriptor;
 	uint16_t length;
 	uint8_t  space_id;
 	uint8_t  bit_width;
 	uint8_t  bit_offset;
 	uint8_t  reserved;
 	uint64_t address;
 };

 struct xen_processor_px {
 	uint64_t core_frequency; /* megahertz */
 	uint64_t power;      /* milliWatts */
 	uint64_t transition_latency; /* microseconds */
 	uint64_t bus_master_latency; /* microseconds */
 	uint64_t control;        /* control value */
 	uint64_t status;     /* success indicator */
 };
 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_px);

 struct xen_psd_package {
 	uint64_t num_entries;
 	uint64_t revision;
 	uint64_t domain;
 	uint64_t coord_type;
 	uint64_t num_processors;
 };

 struct xen_processor_performance {
 	uint32_t flags;     /* flag for Px sub info type */
 	uint32_t platform_limit;  /* Platform limitation on freq usage */
 	struct xen_pct_register control_register;
 	struct xen_pct_register status_register;
 	uint32_t state_count;     /* total available performance states */
 	GUEST_HANDLE(xen_processor_px) states;
 	struct xen_psd_package domain_info;
 	uint32_t shared_type;     /* coordination type of this processor */
 };
 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_performance);

 struct xenpf_set_processor_pminfo {
 	/* IN variables */
 	uint32_t id;    /* ACPI CPU ID */
 	uint32_t type;  /* {XEN_PM_CX, XEN_PM_PX} */
 	union {
 		struct xen_processor_power          power;/* Cx: _CST/_CSD */
 		struct xen_processor_performance    perf; /* Px: _PPC/_PCT/_PSS/_PSD */
 	};
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_set_processor_pminfo);

 struct xen_platform_op {
 	uint32_t cmd;
 	uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
 	union {
 		struct xenpf_settime           settime;
 		struct xenpf_add_memtype       add_memtype;
 		struct xenpf_del_memtype       del_memtype;
 		struct xenpf_read_memtype      read_memtype;
 		struct xenpf_microcode_update  microcode;
 		struct xenpf_platform_quirk    platform_quirk;
 		struct xenpf_firmware_info     firmware_info;
 		struct xenpf_enter_acpi_sleep  enter_acpi_sleep;
 		struct xenpf_change_freq       change_freq;
 		struct xenpf_getidletime       getidletime;
 		struct xenpf_set_processor_pminfo set_pminfo;
 		uint8_t                        pad[128];
 	} u;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xen_platform_op_t);

 #endif /* __XEN_PUBLIC_PLATFORM_H__ */
	/******************************************************************************
	* platform.h
	*
	* Hardware platform operations. Intended for use by domain-0 kernel.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to
	* deal in the Software without restriction, including without limitation the
	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	* sell copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	* DEALINGS IN THE SOFTWARE.
	*
	* Copyright (c) 2002-2006, K Fraser
	*/

	#ifndef __XEN_PUBLIC_PLATFORM_H__
	#define __XEN_PUBLIC_PLATFORM_H__

	#include "xen.h"

	#define XENPF_INTERFACE_VERSION 0x03000001

	/*
	* Set clock such that it would read <secs,nsecs> after 00:00:00 UTC,
	* 1 January, 1970 if the current system time was <system_time>.
	*/
	#define XENPF_settime 17
	struct xenpf_settime {
	/* IN variables. */
	uint32_t secs;
	uint32_t nsecs;
	uint64_t system_time;
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime_t);

	/*
	* Request memory range (@mfn, @mfn+@nr_mfns-1) to have type @type.
	* On x86, @type is an architecture-defined MTRR memory type.
	* On success, returns the MTRR that was used (@reg) and a handle that can
	* be passed to XENPF_DEL_MEMTYPE to accurately tear down the new setting.
	* (x86-specific).
	*/
	#define XENPF_add_memtype 31
	struct xenpf_add_memtype {
	/* IN variables. */
	unsigned long mfn;
	uint64_t nr_mfns;
	uint32_t type;
	/* OUT variables. */
	uint32_t handle;
	uint32_t reg;
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_add_memtype_t);

	/*
	* Tear down an existing memory-range type. If @handle is remembered then it
	* should be passed in to accurately tear down the correct setting (in case
	* of overlapping memory regions with differing types). If it is not known
	* then @handle should be set to zero. In all cases @reg must be set.
	* (x86-specific).
	*/
	#define XENPF_del_memtype 32
	struct xenpf_del_memtype {
	/* IN variables. */
	uint32_t handle;
	uint32_t reg;
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_del_memtype_t);

	/* Read current type of an MTRR (x86-specific). */
	#define XENPF_read_memtype 33
	struct xenpf_read_memtype {
	/* IN variables. */
	uint32_t reg;
	/* OUT variables. */
	unsigned long mfn;
	uint64_t nr_mfns;
	uint32_t type;
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_read_memtype_t);

	#define XENPF_microcode_update 35
	struct xenpf_microcode_update {
	/* IN variables. */
	GUEST_HANDLE(void) data; /* Pointer to microcode data */
	uint32_t length; /* Length of microcode data. */
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_microcode_update_t);

	#define XENPF_platform_quirk 39
	#define QUIRK_NOIRQBALANCING 1 /* Do not restrict IO-APIC RTE targets */
	#define QUIRK_IOAPIC_BAD_REGSEL 2 /* IO-APIC REGSEL forgets its value */
	#define QUIRK_IOAPIC_GOOD_REGSEL 3 /* IO-APIC REGSEL behaves properly */
	struct xenpf_platform_quirk {
	/* IN variables. */
	uint32_t quirk_id;
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_platform_quirk_t);

	#define XENPF_firmware_info 50
	#define XEN_FW_DISK_INFO 1 /* from int 13 AH=08/41/48 */
	#define XEN_FW_DISK_MBR_SIGNATURE 2 /* from MBR offset 0x1b8 */
	#define XEN_FW_VBEDDC_INFO 3 /* from int 10 AX=4f15 */
	struct xenpf_firmware_info {
	/* IN variables. */
	uint32_t type;
	uint32_t index;
	/* OUT variables. */
	union {
	struct {
	/* Int13, Fn48: Check Extensions Present. */
	uint8_t device; /* %dl: bios device number */
	uint8_t version; /* %ah: major version */
	uint16_t interface_support; /* %cx: support bitmap */
	/* Int13, Fn08: Legacy Get Device Parameters. */
	uint16_t legacy_max_cylinder; /* %cl[7:6]:%ch: max cyl # */
	uint8_t legacy_max_head; /* %dh: max head # */
	uint8_t legacy_sectors_per_track; /* %cl[5:0]: max sector # */
	/* Int13, Fn41: Get Device Parameters (as filled into %ds:%esi). */
	/* NB. First uint16_t of buffer must be set to buffer size. */
	GUEST_HANDLE(void) edd_params;
	} disk_info; /* XEN_FW_DISK_INFO */
	struct {
	uint8_t device; /* bios device number */
	uint32_t mbr_signature; /* offset 0x1b8 in mbr */
	} disk_mbr_signature; /* XEN_FW_DISK_MBR_SIGNATURE */
	struct {
	/* Int10, AX=4F15: Get EDID info. */
	uint8_t capabilities;
	uint8_t edid_transfer_time;
	/* must refer to 128-byte buffer */
	GUEST_HANDLE(uchar) edid;
	} vbeddc_info; /* XEN_FW_VBEDDC_INFO */
	} u;
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_firmware_info_t);

	#define XENPF_enter_acpi_sleep 51
	struct xenpf_enter_acpi_sleep {
	/* IN variables */
	uint16_t pm1a_cnt_val; /* PM1a control value. */
	uint16_t pm1b_cnt_val; /* PM1b control value. */
	uint32_t sleep_state; /* Which state to enter (Sn). */
	uint32_t flags; /* Must be zero. */
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_enter_acpi_sleep_t);

	#define XENPF_change_freq 52
	struct xenpf_change_freq {
	/* IN variables */
	uint32_t flags; /* Must be zero. */
	uint32_t cpu; /* Physical cpu. */
	uint64_t freq; /* New frequency (Hz). */
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_change_freq_t);

	/*
	* Get idle times (nanoseconds since boot) for physical CPUs specified in the
	* @cpumap_bitmap with range [0..@cpumap_nr_cpus-1]. The @idletime array is
	* indexed by CPU number; only entries with the corresponding @cpumap_bitmap
	* bit set are written to. On return, @cpumap_bitmap is modified so that any
	* non-existent CPUs are cleared. Such CPUs have their @idletime array entry
	* cleared.
	*/
	#define XENPF_getidletime 53
	struct xenpf_getidletime {
	/* IN/OUT variables */
	/* IN: CPUs to interrogate; OUT: subset of IN which are present */
	GUEST_HANDLE(uchar) cpumap_bitmap;
	/* IN variables */
	/* Size of cpumap bitmap. */
	uint32_t cpumap_nr_cpus;
	/* Must be indexable for every cpu in cpumap_bitmap. */
	GUEST_HANDLE(uint64_t) idletime;
	/* OUT variables */
	/* System time when the idletime snapshots were taken. */
	uint64_t now;
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_getidletime_t);

	#define XENPF_set_processor_pminfo 54

	/* ability bits */
	#define XEN_PROCESSOR_PM_CX 1
	#define XEN_PROCESSOR_PM_PX 2
	#define XEN_PROCESSOR_PM_TX 4

	/* cmd type */
	#define XEN_PM_CX 0
	#define XEN_PM_PX 1
	#define XEN_PM_TX 2

	/* Px sub info type */
	#define XEN_PX_PCT 1
	#define XEN_PX_PSS 2
	#define XEN_PX_PPC 4
	#define XEN_PX_PSD 8

	struct xen_power_register {
	uint32_t space_id;
	uint32_t bit_width;
	uint32_t bit_offset;
	uint32_t access_size;
	uint64_t address;
	};

	struct xen_processor_csd {
	uint32_t domain; /* domain number of one dependent group */
	uint32_t coord_type; /* coordination type */
	uint32_t num; /* number of processors in same domain */
	};
	DEFINE_GUEST_HANDLE_STRUCT(xen_processor_csd);

	struct xen_processor_cx {
	struct xen_power_register reg; /* GAS for Cx trigger register */
	uint8_t type; /* cstate value, c0: 0, c1: 1, ... */
	uint32_t latency; /* worst latency (ms) to enter/exit this cstate */
	uint32_t power; /* average power consumption(mW) */
	uint32_t dpcnt; /* number of dependency entries */
	GUEST_HANDLE(xen_processor_csd) dp; /* NULL if no dependency */
	};
	DEFINE_GUEST_HANDLE_STRUCT(xen_processor_cx);

	struct xen_processor_flags {
	uint32_t bm_control:1;
	uint32_t bm_check:1;
	uint32_t has_cst:1;
	uint32_t power_setup_done:1;
	uint32_t bm_rld_set:1;
	};

	struct xen_processor_power {
	uint32_t count; /* number of C state entries in array below */
	struct xen_processor_flags flags; /* global flags of this processor */
	GUEST_HANDLE(xen_processor_cx) states; /* supported c states */
	};

	struct xen_pct_register {
	uint8_t descriptor;
	uint16_t length;
	uint8_t space_id;
	uint8_t bit_width;
	uint8_t bit_offset;
	uint8_t reserved;
	uint64_t address;
	};

	struct xen_processor_px {
	uint64_t core_frequency; /* megahertz */
	uint64_t power; /* milliWatts */
	uint64_t transition_latency; /* microseconds */
	uint64_t bus_master_latency; /* microseconds */
	uint64_t control; /* control value */
	uint64_t status; /* success indicator */
	};
	DEFINE_GUEST_HANDLE_STRUCT(xen_processor_px);

	struct xen_psd_package {
	uint64_t num_entries;
	uint64_t revision;
	uint64_t domain;
	uint64_t coord_type;
	uint64_t num_processors;
	};

	struct xen_processor_performance {
	uint32_t flags; /* flag for Px sub info type */
	uint32_t platform_limit; /* Platform limitation on freq usage */
	struct xen_pct_register control_register;
	struct xen_pct_register status_register;
	uint32_t state_count; /* total available performance states */
	GUEST_HANDLE(xen_processor_px) states;
	struct xen_psd_package domain_info;
	uint32_t shared_type; /* coordination type of this processor */
	};
	DEFINE_GUEST_HANDLE_STRUCT(xen_processor_performance);

	struct xenpf_set_processor_pminfo {
	/* IN variables */
	uint32_t id; /* ACPI CPU ID */
	uint32_t type; /* {XEN_PM_CX, XEN_PM_PX} */
	union {
	struct xen_processor_power power;/* Cx: _CST/_CSD */
	struct xen_processor_performance perf; /* Px: _PPC/_PCT/_PSS/_PSD */
	};
	};
	DEFINE_GUEST_HANDLE_STRUCT(xenpf_set_processor_pminfo);

	struct xen_platform_op {
	uint32_t cmd;
	uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
	union {
	struct xenpf_settime settime;
	struct xenpf_add_memtype add_memtype;
	struct xenpf_del_memtype del_memtype;
	struct xenpf_read_memtype read_memtype;
	struct xenpf_microcode_update microcode;
	struct xenpf_platform_quirk platform_quirk;
	struct xenpf_firmware_info firmware_info;
	struct xenpf_enter_acpi_sleep enter_acpi_sleep;
	struct xenpf_change_freq change_freq;
	struct xenpf_getidletime getidletime;
	struct xenpf_set_processor_pminfo set_pminfo;
	uint8_t pad[128];
	} u;
	};
	DEFINE_GUEST_HANDLE_STRUCT(xen_platform_op_t);

	#endif /* __XEN_PUBLIC_PLATFORM_H__ */