FreeBSD/Linux Kernel Cross Reference
sys/contrib/xen/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_settime32           17
    struct xenpf_settime32 {
        /* IN variables. */
        uint32_t secs;
        uint32_t nsecs;
        uint64_t system_time;
    };
    typedef struct xenpf_settime32 xenpf_settime32_t;
    #define XENPF_settime64           62
    struct xenpf_settime64 {
        /* IN variables. */
        uint64_t secs;
        uint32_t nsecs;
        uint32_t mbz;
        uint64_t system_time;
    };
    typedef struct xenpf_settime64 xenpf_settime64_t;
    #if __XEN_INTERFACE_VERSION__ < 0x00040600
    #define XENPF_settime XENPF_settime32
    #define xenpf_settime xenpf_settime32
    #else
    #define XENPF_settime XENPF_settime64
    #define xenpf_settime xenpf_settime64
    #endif
    typedef struct xenpf_settime xenpf_settime_t;
    DEFINE_XEN_GUEST_HANDLE(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. */
        xen_pfn_t mfn;
        uint64_t nr_mfns;
        uint32_t type;
        /* OUT variables. */
        uint32_t handle;
        uint32_t reg;
    };
    typedef struct xenpf_add_memtype xenpf_add_memtype_t;
    DEFINE_XEN_GUEST_HANDLE(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;
    };
    typedef struct xenpf_del_memtype xenpf_del_memtype_t;
    DEFINE_XEN_GUEST_HANDLE(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. */
       xen_pfn_t mfn;
       uint64_t nr_mfns;
       uint32_t type;
   };
   typedef struct xenpf_read_memtype xenpf_read_memtype_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_read_memtype_t);
   
   #define XENPF_microcode_update    35
   struct xenpf_microcode_update {
       /* IN variables. */
       XEN_GUEST_HANDLE(const_void) data;/* Pointer to microcode data */
       uint32_t length;                  /* Length of microcode data. */
   };
   typedef struct xenpf_microcode_update xenpf_microcode_update_t;
   DEFINE_XEN_GUEST_HANDLE(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;
   };
   typedef struct xenpf_platform_quirk xenpf_platform_quirk_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_platform_quirk_t);
   
   #define XENPF_efi_runtime_call    49
   #define XEN_EFI_get_time                      1
   #define XEN_EFI_set_time                      2
   #define XEN_EFI_get_wakeup_time               3
   #define XEN_EFI_set_wakeup_time               4
   #define XEN_EFI_get_next_high_monotonic_count 5
   #define XEN_EFI_get_variable                  6
   #define XEN_EFI_set_variable                  7
   #define XEN_EFI_get_next_variable_name        8
   #define XEN_EFI_query_variable_info           9
   #define XEN_EFI_query_capsule_capabilities   10
   #define XEN_EFI_update_capsule               11
   
   struct xenpf_efi_time {
       uint16_t year;
       uint8_t month;
       uint8_t day;
       uint8_t hour;
       uint8_t min;
       uint8_t sec;
       uint32_t ns;
       int16_t tz;
       uint8_t daylight;
   };
   
   struct xenpf_efi_guid {
       uint32_t data1;
       uint16_t data2;
       uint16_t data3;
       uint8_t data4[8];
   };
   
   struct xenpf_efi_runtime_call {
       uint32_t function;
       /*
        * This field is generally used for per sub-function flags (defined
        * below), except for the XEN_EFI_get_next_high_monotonic_count case,
        * where it holds the single returned value.
        */
       uint32_t misc;
       xen_ulong_t status;
       union {
   #define XEN_EFI_GET_TIME_SET_CLEARS_NS 0x00000001
           struct {
               struct xenpf_efi_time time;
               uint32_t resolution;
               uint32_t accuracy;
           } get_time;
   
           struct xenpf_efi_time set_time;
   
   #define XEN_EFI_GET_WAKEUP_TIME_ENABLED 0x00000001
   #define XEN_EFI_GET_WAKEUP_TIME_PENDING 0x00000002
           struct xenpf_efi_time get_wakeup_time;
   
   #define XEN_EFI_SET_WAKEUP_TIME_ENABLE      0x00000001
   #define XEN_EFI_SET_WAKEUP_TIME_ENABLE_ONLY 0x00000002
           struct xenpf_efi_time set_wakeup_time;
   
   #define XEN_EFI_VARIABLE_NON_VOLATILE       0x00000001
   #define XEN_EFI_VARIABLE_BOOTSERVICE_ACCESS 0x00000002
   #define XEN_EFI_VARIABLE_RUNTIME_ACCESS     0x00000004
           struct {
               XEN_GUEST_HANDLE(void) name;  /* UCS-2/UTF-16 string */
               xen_ulong_t size;
               XEN_GUEST_HANDLE(void) data;
               struct xenpf_efi_guid vendor_guid;
           } get_variable, set_variable;
   
           struct {
               xen_ulong_t size;
               XEN_GUEST_HANDLE(void) name;  /* UCS-2/UTF-16 string */
               struct xenpf_efi_guid vendor_guid;
           } get_next_variable_name;
   
   #define XEN_EFI_VARINFO_BOOT_SNAPSHOT       0x00000001
           struct {
               uint32_t attr;
               uint64_t max_store_size;
               uint64_t remain_store_size;
               uint64_t max_size;
           } query_variable_info;
   
           struct {
               XEN_GUEST_HANDLE(void) capsule_header_array;
               xen_ulong_t capsule_count;
               uint64_t max_capsule_size;
               uint32_t reset_type;
           } query_capsule_capabilities;
   
           struct {
               XEN_GUEST_HANDLE(void) capsule_header_array;
               xen_ulong_t capsule_count;
               uint64_t sg_list; /* machine address */
           } update_capsule;
       } u;
   };
   typedef struct xenpf_efi_runtime_call xenpf_efi_runtime_call_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_efi_runtime_call_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 */
   #define XEN_FW_EFI_INFO           4 /* from EFI */
   #define  XEN_FW_EFI_VERSION        0
   #define  XEN_FW_EFI_CONFIG_TABLE   1
   #define  XEN_FW_EFI_VENDOR         2
   #define  XEN_FW_EFI_MEM_INFO       3
   #define  XEN_FW_EFI_RT_VERSION     4
   #define  XEN_FW_EFI_PCI_ROM        5
   #define  XEN_FW_EFI_APPLE_PROPERTIES 6
   #define XEN_FW_KBD_SHIFT_FLAGS    5
   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.      */
               XEN_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 */
               XEN_GUEST_HANDLE(uint8) edid;
           } vbeddc_info; /* XEN_FW_VBEDDC_INFO */
           union xenpf_efi_info {
               uint32_t version;
               struct {
                   uint64_t addr;                /* EFI_CONFIGURATION_TABLE */
                   uint32_t nent;
               } cfg;
               struct {
                   uint32_t revision;
                   uint32_t bufsz;               /* input, in bytes */
                   XEN_GUEST_HANDLE(void) name;  /* UCS-2/UTF-16 string */
               } vendor;
               struct {
                   uint64_t addr;
                   uint64_t size;
                   uint64_t attr;
                   uint32_t type;
               } mem;
               struct {
                   /* IN variables */
                   uint16_t segment;
                   uint8_t bus;
                   uint8_t devfn;
                   uint16_t vendor;
                   uint16_t devid;
                   /* OUT variables */
                   uint64_t address;
                   xen_ulong_t size;
               } pci_rom;
               struct {
                   /* OUT variables */
                   uint64_t address;
                   xen_ulong_t size;
               } apple_properties;
           } efi_info; /* XEN_FW_EFI_INFO */
   
           /* Int16, Fn02: Get keyboard shift flags. */
           uint8_t kbd_shift_flags; /* XEN_FW_KBD_SHIFT_FLAGS */
       } u;
   };
   typedef struct xenpf_firmware_info xenpf_firmware_info_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_firmware_info_t);
   
   #define XENPF_enter_acpi_sleep    51
   struct xenpf_enter_acpi_sleep {
       /* IN variables */
   #if __XEN_INTERFACE_VERSION__ < 0x00040300
       uint16_t pm1a_cnt_val;      /* PM1a control value. */
       uint16_t pm1b_cnt_val;      /* PM1b control value. */
   #else
       uint16_t val_a;             /* PM1a control / sleep type A. */
       uint16_t val_b;             /* PM1b control / sleep type B. */
   #endif
       uint32_t sleep_state;       /* Which state to enter (Sn). */
   #define XENPF_ACPI_SLEEP_EXTENDED 0x00000001
       uint32_t flags;             /* XENPF_ACPI_SLEEP_*. */
   };
   typedef struct xenpf_enter_acpi_sleep xenpf_enter_acpi_sleep_t;
   DEFINE_XEN_GUEST_HANDLE(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). */
   };
   typedef struct xenpf_change_freq xenpf_change_freq_t;
   DEFINE_XEN_GUEST_HANDLE(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 */
       XEN_GUEST_HANDLE(uint8) cpumap_bitmap;
       /* IN variables */
       /* Size of cpumap bitmap. */
       uint32_t cpumap_nr_cpus;
       /* Must be indexable for every cpu in cpumap_bitmap. */
       XEN_GUEST_HANDLE(uint64) idletime;
       /* OUT variables */
       /* System time when the idletime snapshots were taken. */
       uint64_t now;
   };
   typedef struct xenpf_getidletime xenpf_getidletime_t;
   DEFINE_XEN_GUEST_HANDLE(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
   #define XEN_PM_PDC  3
   
   /* 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 */
   };
   typedef struct xen_processor_csd xen_processor_csd_t;
   DEFINE_XEN_GUEST_HANDLE(xen_processor_csd_t);
   
   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 */
       XEN_GUEST_HANDLE(xen_processor_csd_t) dp; /* NULL if no dependency */
   };
   typedef struct xen_processor_cx xen_processor_cx_t;
   DEFINE_XEN_GUEST_HANDLE(xen_processor_cx_t);
   
   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 */
       XEN_GUEST_HANDLE(xen_processor_cx_t) 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 */
   };
   typedef struct xen_processor_px xen_processor_px_t;
   DEFINE_XEN_GUEST_HANDLE(xen_processor_px_t);
   
   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 */
       XEN_GUEST_HANDLE(xen_processor_px_t) states;
       struct xen_psd_package domain_info;
       /* Coordination type of this processor */
   #define XEN_CPUPERF_SHARED_TYPE_HW   1 /* HW does needed coordination */
   #define XEN_CPUPERF_SHARED_TYPE_ALL  2 /* All dependent CPUs should set freq */
   #define XEN_CPUPERF_SHARED_TYPE_ANY  3 /* Freq can be set from any dependent CPU */
       uint32_t shared_type;
   };
   typedef struct xen_processor_performance xen_processor_performance_t;
   DEFINE_XEN_GUEST_HANDLE(xen_processor_performance_t);
   
   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 */
           XEN_GUEST_HANDLE(uint32)            pdc;  /* _PDC */
       } u;
   };
   typedef struct xenpf_set_processor_pminfo xenpf_set_processor_pminfo_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_set_processor_pminfo_t);
   
   #define XENPF_get_cpuinfo 55
   struct xenpf_pcpuinfo {
       /* IN */
       uint32_t xen_cpuid;
       /* OUT */
       /* The maxium cpu_id that is present */
       uint32_t max_present;
   #define XEN_PCPU_FLAGS_ONLINE   1
       /* Correponding xen_cpuid is not present*/
   #define XEN_PCPU_FLAGS_INVALID  2
       uint32_t flags;
       uint32_t apic_id;
       uint32_t acpi_id;
   };
   typedef struct xenpf_pcpuinfo xenpf_pcpuinfo_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_pcpuinfo_t);
   
   #define XENPF_get_cpu_version 48
   struct xenpf_pcpu_version {
       /* IN */
       uint32_t xen_cpuid;
       /* OUT */
       /* The maxium cpu_id that is present */
       uint32_t max_present;
       char vendor_id[12];
       uint32_t family;
       uint32_t model;
       uint32_t stepping;
   };
   typedef struct xenpf_pcpu_version xenpf_pcpu_version_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_pcpu_version_t);
   
   #define XENPF_cpu_online    56
   #define XENPF_cpu_offline   57
   struct xenpf_cpu_ol
   {
       uint32_t cpuid;
   };
   typedef struct xenpf_cpu_ol xenpf_cpu_ol_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_cpu_ol_t);
   
   #define XENPF_cpu_hotadd    58
   struct xenpf_cpu_hotadd
   {
           uint32_t apic_id;
           uint32_t acpi_id;
           uint32_t pxm;
   };
   typedef struct xenpf_cpu_hotadd xenpf_cpu_hotadd_t;
   
   #define XENPF_mem_hotadd    59
   struct xenpf_mem_hotadd
   {
       uint64_t spfn;
       uint64_t epfn;
       uint32_t pxm;
       uint32_t flags;
   };
   typedef struct xenpf_mem_hotadd xenpf_mem_hotadd_t;
   
   #define XENPF_core_parking  60
   
   #define XEN_CORE_PARKING_SET 1
   #define XEN_CORE_PARKING_GET 2
   struct xenpf_core_parking {
       /* IN variables */
       uint32_t type;
       /* IN variables:  set cpu nums expected to be idled */
       /* OUT variables: get cpu nums actually be idled */
       uint32_t idle_nums;
   };
   typedef struct xenpf_core_parking xenpf_core_parking_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_core_parking_t);
   
   /*
    * Access generic platform resources(e.g., accessing MSR, port I/O, etc)
    * in unified way. Batch resource operations in one call are supported and
    * they are always non-preemptible and executed in their original order.
    * The batch itself returns a negative integer for general errors, or a
    * non-negative integer for the number of successful operations. For the latter
    * case, the @ret in the failed entry (if any) indicates the exact error.
    */
   #define XENPF_resource_op   61
   
   #define XEN_RESOURCE_OP_MSR_READ  0
   #define XEN_RESOURCE_OP_MSR_WRITE 1
   
   /*
    * Specially handled MSRs:
    * - MSR_IA32_TSC
    * READ: Returns the scaled system time(ns) instead of raw timestamp. In
    *       multiple entry case, if other MSR read is followed by a MSR_IA32_TSC
    *       read, then both reads are guaranteed to be performed atomically (with
    *       IRQ disabled). The return time indicates the point of reading that MSR.
    * WRITE: Not supported.
    */
   
   struct xenpf_resource_entry {
       union {
           uint32_t cmd;   /* IN: XEN_RESOURCE_OP_* */
           int32_t  ret;   /* OUT: return value for failed entry */
       } u;
       uint32_t rsvd;      /* IN: padding and must be zero */
       uint64_t idx;       /* IN: resource address to access */
       uint64_t val;       /* IN/OUT: resource value to set/get */
   };
   typedef struct xenpf_resource_entry xenpf_resource_entry_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_resource_entry_t);
   
   struct xenpf_resource_op {
       uint32_t nr_entries;    /* number of resource entry */
       uint32_t cpu;           /* which cpu to run */
       XEN_GUEST_HANDLE(xenpf_resource_entry_t) entries;
   };
   typedef struct xenpf_resource_op xenpf_resource_op_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_resource_op_t);
   
   #define XENPF_get_symbol   63
   struct xenpf_symdata {
       /* IN/OUT variables */
       uint32_t namelen; /* IN:  size of name buffer                       */
                         /* OUT: strlen(name) of hypervisor symbol (may be */
                         /*      larger than what's been copied to guest)  */
       uint32_t symnum;  /* IN:  Symbol to read                            */
                         /* OUT: Next available symbol. If same as IN then */
                         /*      we reached the end                        */
   
       /* OUT variables */
       XEN_GUEST_HANDLE(char) name;
       uint64_t address;
       char type;
   };
   typedef struct xenpf_symdata xenpf_symdata_t;
   DEFINE_XEN_GUEST_HANDLE(xenpf_symdata_t);
   
   /*
    * ` enum neg_errnoval
    * ` HYPERVISOR_platform_op(const struct xen_platform_op*);
    */
   struct xen_platform_op {
       uint32_t cmd;
       uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
       union {
           xenpf_settime_t               settime;
           xenpf_settime32_t             settime32;
           xenpf_settime64_t             settime64;
           xenpf_add_memtype_t           add_memtype;
           xenpf_del_memtype_t           del_memtype;
           xenpf_read_memtype_t          read_memtype;
           xenpf_microcode_update_t      microcode;
           xenpf_platform_quirk_t        platform_quirk;
           xenpf_efi_runtime_call_t      efi_runtime_call;
           xenpf_firmware_info_t         firmware_info;
           xenpf_enter_acpi_sleep_t      enter_acpi_sleep;
           xenpf_change_freq_t           change_freq;
           xenpf_getidletime_t           getidletime;
           xenpf_set_processor_pminfo_t  set_pminfo;
           xenpf_pcpuinfo_t              pcpu_info;
           xenpf_pcpu_version_t          pcpu_version;
           xenpf_cpu_ol_t                cpu_ol;
           xenpf_cpu_hotadd_t            cpu_add;
           xenpf_mem_hotadd_t            mem_add;
           xenpf_core_parking_t          core_parking;
           xenpf_resource_op_t           resource_op;
           xenpf_symdata_t               symdata;
           uint8_t                       pad[128];
       } u;
   };
   typedef struct xen_platform_op xen_platform_op_t;
   DEFINE_XEN_GUEST_HANDLE(xen_platform_op_t);
   
   #endif /* __XEN_PUBLIC_PLATFORM_H__ */
   
   /*
    * Local variables:
    * mode: C
    * c-file-style: "BSD"
    * c-basic-offset: 4
    * tab-width: 4
    * indent-tabs-mode: nil
    * End:
    */

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