include/xen/interface/platform.h

   1 /******************************************************************************
   2  * platform.h
   3  *
   4  * Hardware platform operations. Intended for use by domain-0 kernel.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to
   8  * deal in the Software without restriction, including without limitation the
   9  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  10  * sell copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Copyright (c) 2002-2006, K Fraser
  25  */
  26
  27 #ifndef __XEN_PUBLIC_PLATFORM_H__
  28 #define __XEN_PUBLIC_PLATFORM_H__
  29
  30 #include <xen/interface/xen.h>
  31
  32 #define XENPF_INTERFACE_VERSION 0x03000001
  33
  34 /*
  35  * Set clock such that it would read <secs,nsecs> after 00:00:00 UTC,
  36  * 1 January, 1970 if the current system time was <system_time>.
  37  */
  38 #define XENPF_settime             17
  39 struct xenpf_settime {
  40         /* IN variables. */
  41         uint32_t secs;
  42         uint32_t nsecs;
  43         uint64_t system_time;
  44 };
  45 DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime_t);
  46
  47 /*
  48  * Request memory range (@mfn, @mfn+@nr_mfns-1) to have type @type.
  49  * On x86, @type is an architecture-defined MTRR memory type.
  50  * On success, returns the MTRR that was used (@reg) and a handle that can
  51  * be passed to XENPF_DEL_MEMTYPE to accurately tear down the new setting.
  52  * (x86-specific).
  53  */
  54 #define XENPF_add_memtype         31
  55 struct xenpf_add_memtype {
  56         /* IN variables. */
  57         xen_pfn_t mfn;
  58         uint64_t nr_mfns;
  59         uint32_t type;
  60         /* OUT variables. */
  61         uint32_t handle;
  62         uint32_t reg;
  63 };
  64 DEFINE_GUEST_HANDLE_STRUCT(xenpf_add_memtype_t);
  65
  66 /*
  67  * Tear down an existing memory-range type. If @handle is remembered then it
  68  * should be passed in to accurately tear down the correct setting (in case
  69  * of overlapping memory regions with differing types). If it is not known
  70  * then @handle should be set to zero. In all cases @reg must be set.
  71  * (x86-specific).
  72  */
  73 #define XENPF_del_memtype         32
  74 struct xenpf_del_memtype {
  75         /* IN variables. */
  76         uint32_t handle;
  77         uint32_t reg;
  78 };
  79 DEFINE_GUEST_HANDLE_STRUCT(xenpf_del_memtype_t);
  80
  81 /* Read current type of an MTRR (x86-specific). */
  82 #define XENPF_read_memtype        33
  83 struct xenpf_read_memtype {
  84         /* IN variables. */
  85         uint32_t reg;
  86         /* OUT variables. */
  87         xen_pfn_t mfn;
  88         uint64_t nr_mfns;
  89         uint32_t type;
  90 };
  91 DEFINE_GUEST_HANDLE_STRUCT(xenpf_read_memtype_t);
  92
  93 #define XENPF_microcode_update    35
  94 struct xenpf_microcode_update {
  95         /* IN variables. */
  96         GUEST_HANDLE(void) data;          /* Pointer to microcode data */
  97         uint32_t length;                  /* Length of microcode data. */
  98 };
  99 DEFINE_GUEST_HANDLE_STRUCT(xenpf_microcode_update_t);
 100
 101 #define XENPF_platform_quirk      39
 102 #define QUIRK_NOIRQBALANCING      1 /* Do not restrict IO-APIC RTE targets */
 103 #define QUIRK_IOAPIC_BAD_REGSEL   2 /* IO-APIC REGSEL forgets its value    */
 104 #define QUIRK_IOAPIC_GOOD_REGSEL  3 /* IO-APIC REGSEL behaves properly     */
 105 struct xenpf_platform_quirk {
 106         /* IN variables. */
 107         uint32_t quirk_id;
 108 };
 109 DEFINE_GUEST_HANDLE_STRUCT(xenpf_platform_quirk_t);
 110
 111 #define XENPF_firmware_info       50
 112 #define XEN_FW_DISK_INFO          1 /* from int 13 AH=08/41/48 */
 113 #define XEN_FW_DISK_MBR_SIGNATURE 2 /* from MBR offset 0x1b8 */
 114 #define XEN_FW_VBEDDC_INFO        3 /* from int 10 AX=4f15 */
 115 #define XEN_FW_KBD_SHIFT_FLAGS    5 /* Int16, Fn02: Get keyboard shift flags. */
 116 struct xenpf_firmware_info {
 117         /* IN variables. */
 118         uint32_t type;
 119         uint32_t index;
 120         /* OUT variables. */
 121         union {
 122                 struct {
 123                         /* Int13, Fn48: Check Extensions Present. */
 124                         uint8_t device;                   /* %dl: bios device number */
 125                         uint8_t version;                  /* %ah: major version      */
 126                         uint16_t interface_support;       /* %cx: support bitmap     */
 127                         /* Int13, Fn08: Legacy Get Device Parameters. */
 128                         uint16_t legacy_max_cylinder;     /* %cl[7:6]:%ch: max cyl # */
 129                         uint8_t legacy_max_head;          /* %dh: max head #         */
 130                         uint8_t legacy_sectors_per_track; /* %cl[5:0]: max sector #  */
 131                         /* Int13, Fn41: Get Device Parameters (as filled into %ds:%esi). */
 132                         /* NB. First uint16_t of buffer must be set to buffer size.      */
 133                         GUEST_HANDLE(void) edd_params;
 134                 } disk_info; /* XEN_FW_DISK_INFO */
 135                 struct {
 136                         uint8_t device;                   /* bios device number  */
 137                         uint32_t mbr_signature;           /* offset 0x1b8 in mbr */
 138                 } disk_mbr_signature; /* XEN_FW_DISK_MBR_SIGNATURE */
 139                 struct {
 140                         /* Int10, AX=4F15: Get EDID info. */
 141                         uint8_t capabilities;
 142                         uint8_t edid_transfer_time;
 143                         /* must refer to 128-byte buffer */
 144                         GUEST_HANDLE(uchar) edid;
 145                 } vbeddc_info; /* XEN_FW_VBEDDC_INFO */
 146
 147                 uint8_t kbd_shift_flags; /* XEN_FW_KBD_SHIFT_FLAGS */
 148         } u;
 149 };
 150 DEFINE_GUEST_HANDLE_STRUCT(xenpf_firmware_info_t);
 151
 152 #define XENPF_enter_acpi_sleep    51
 153 struct xenpf_enter_acpi_sleep {
 154         /* IN variables */
 155         uint16_t pm1a_cnt_val;      /* PM1a control value. */
 156         uint16_t pm1b_cnt_val;      /* PM1b control value. */
 157         uint32_t sleep_state;       /* Which state to enter (Sn). */
 158         uint32_t flags;             /* Must be zero. */
 159 };
 160 DEFINE_GUEST_HANDLE_STRUCT(xenpf_enter_acpi_sleep_t);
 161
 162 #define XENPF_change_freq         52
 163 struct xenpf_change_freq {
 164         /* IN variables */
 165         uint32_t flags; /* Must be zero. */
 166         uint32_t cpu;   /* Physical cpu. */
 167         uint64_t freq;  /* New frequency (Hz). */
 168 };
 169 DEFINE_GUEST_HANDLE_STRUCT(xenpf_change_freq_t);
 170
 171 /*
 172  * Get idle times (nanoseconds since boot) for physical CPUs specified in the
 173  * @cpumap_bitmap with range [0..@cpumap_nr_cpus-1]. The @idletime array is
 174  * indexed by CPU number; only entries with the corresponding @cpumap_bitmap
 175  * bit set are written to. On return, @cpumap_bitmap is modified so that any
 176  * non-existent CPUs are cleared. Such CPUs have their @idletime array entry
 177  * cleared.
 178  */
 179 #define XENPF_getidletime         53
 180 struct xenpf_getidletime {
 181         /* IN/OUT variables */
 182         /* IN: CPUs to interrogate; OUT: subset of IN which are present */
 183         GUEST_HANDLE(uchar) cpumap_bitmap;
 184         /* IN variables */
 185         /* Size of cpumap bitmap. */
 186         uint32_t cpumap_nr_cpus;
 187         /* Must be indexable for every cpu in cpumap_bitmap. */
 188         GUEST_HANDLE(uint64_t) idletime;
 189         /* OUT variables */
 190         /* System time when the idletime snapshots were taken. */
 191         uint64_t now;
 192 };
 193 DEFINE_GUEST_HANDLE_STRUCT(xenpf_getidletime_t);
 194
 195 #define XENPF_set_processor_pminfo      54
 196
 197 /* ability bits */
 198 #define XEN_PROCESSOR_PM_CX     1
 199 #define XEN_PROCESSOR_PM_PX     2
 200 #define XEN_PROCESSOR_PM_TX     4
 201
 202 /* cmd type */
 203 #define XEN_PM_CX   0
 204 #define XEN_PM_PX   1
 205 #define XEN_PM_TX   2
 206 #define XEN_PM_PDC  3
 207 /* Px sub info type */
 208 #define XEN_PX_PCT   1
 209 #define XEN_PX_PSS   2
 210 #define XEN_PX_PPC   4
 211 #define XEN_PX_PSD   8
 212
 213 struct xen_power_register {
 214         uint32_t     space_id;
 215         uint32_t     bit_width;
 216         uint32_t     bit_offset;
 217         uint32_t     access_size;
 218         uint64_t     address;
 219 };
 220
 221 struct xen_processor_csd {
 222         uint32_t    domain;      /* domain number of one dependent group */
 223         uint32_t    coord_type;  /* coordination type */
 224         uint32_t    num;         /* number of processors in same domain */
 225 };
 226 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_csd);
 227
 228 struct xen_processor_cx {
 229         struct xen_power_register  reg; /* GAS for Cx trigger register */
 230         uint8_t     type;     /* cstate value, c0: 0, c1: 1, ... */
 231         uint32_t    latency;  /* worst latency (ms) to enter/exit this cstate */
 232         uint32_t    power;    /* average power consumption(mW) */
 233         uint32_t    dpcnt;    /* number of dependency entries */
 234         GUEST_HANDLE(xen_processor_csd) dp; /* NULL if no dependency */
 235 };
 236 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_cx);
 237
 238 struct xen_processor_flags {
 239         uint32_t bm_control:1;
 240         uint32_t bm_check:1;
 241         uint32_t has_cst:1;
 242         uint32_t power_setup_done:1;
 243         uint32_t bm_rld_set:1;
 244 };
 245
 246 struct xen_processor_power {
 247         uint32_t count;  /* number of C state entries in array below */
 248         struct xen_processor_flags flags;  /* global flags of this processor */
 249         GUEST_HANDLE(xen_processor_cx) states; /* supported c states */
 250 };
 251
 252 struct xen_pct_register {
 253         uint8_t  descriptor;
 254         uint16_t length;
 255         uint8_t  space_id;
 256         uint8_t  bit_width;
 257         uint8_t  bit_offset;
 258         uint8_t  reserved;
 259         uint64_t address;
 260 };
 261
 262 struct xen_processor_px {
 263         uint64_t core_frequency; /* megahertz */
 264         uint64_t power;      /* milliWatts */
 265         uint64_t transition_latency; /* microseconds */
 266         uint64_t bus_master_latency; /* microseconds */
 267         uint64_t control;        /* control value */
 268         uint64_t status;     /* success indicator */
 269 };
 270 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_px);
 271
 272 struct xen_psd_package {
 273         uint64_t num_entries;
 274         uint64_t revision;
 275         uint64_t domain;
 276         uint64_t coord_type;
 277         uint64_t num_processors;
 278 };
 279
 280 struct xen_processor_performance {
 281         uint32_t flags;     /* flag for Px sub info type */
 282         uint32_t platform_limit;  /* Platform limitation on freq usage */
 283         struct xen_pct_register control_register;
 284         struct xen_pct_register status_register;
 285         uint32_t state_count;     /* total available performance states */
 286         GUEST_HANDLE(xen_processor_px) states;
 287         struct xen_psd_package domain_info;
 288         uint32_t shared_type;     /* coordination type of this processor */
 289 };
 290 DEFINE_GUEST_HANDLE_STRUCT(xen_processor_performance);
 291
 292 struct xenpf_set_processor_pminfo {
 293         /* IN variables */
 294         uint32_t id;    /* ACPI CPU ID */
 295         uint32_t type;  /* {XEN_PM_CX, XEN_PM_PX} */
 296         union {
 297                 struct xen_processor_power          power;/* Cx: _CST/_CSD */
 298                 struct xen_processor_performance    perf; /* Px: _PPC/_PCT/_PSS/_PSD */
 299                 GUEST_HANDLE(uint32_t)              pdc;
 300         };
 301 };
 302 DEFINE_GUEST_HANDLE_STRUCT(xenpf_set_processor_pminfo);
 303
 304 #define XENPF_get_cpuinfo 55
 305 struct xenpf_pcpuinfo {
 306         /* IN */
 307         uint32_t xen_cpuid;
 308         /* OUT */
 309         /* The maxium cpu_id that is present */
 310         uint32_t max_present;
 311 #define XEN_PCPU_FLAGS_ONLINE   1
 312         /* Correponding xen_cpuid is not present*/
 313 #define XEN_PCPU_FLAGS_INVALID  2
 314         uint32_t flags;
 315         uint32_t apic_id;
 316         uint32_t acpi_id;
 317 };
 318 DEFINE_GUEST_HANDLE_STRUCT(xenpf_pcpuinfo);
 319
 320 #define XENPF_cpu_online        56
 321 #define XENPF_cpu_offline       57
 322 struct xenpf_cpu_ol {
 323         uint32_t cpuid;
 324 };
 325 DEFINE_GUEST_HANDLE_STRUCT(xenpf_cpu_ol);
 326
 327 #define XENPF_cpu_hotadd        58
 328 struct xenpf_cpu_hotadd {
 329         uint32_t apic_id;
 330         uint32_t acpi_id;
 331         uint32_t pxm;
 332 };
 333
 334 #define XENPF_mem_hotadd        59
 335 struct xenpf_mem_hotadd {
 336         uint64_t spfn;
 337         uint64_t epfn;
 338         uint32_t pxm;
 339         uint32_t flags;
 340 };
 341
 342 #define XENPF_core_parking     60
 343 struct xenpf_core_parking {
 344         /* IN variables */
 345 #define XEN_CORE_PARKING_SET   1
 346 #define XEN_CORE_PARKING_GET   2
 347         uint32_t type;
 348         /* IN variables:  set cpu nums expected to be idled */
 349         /* OUT variables: get cpu nums actually be idled */
 350         uint32_t idle_nums;
 351 };
 352 DEFINE_GUEST_HANDLE_STRUCT(xenpf_core_parking);
 353
 354 struct xen_platform_op {
 355         uint32_t cmd;
 356         uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
 357         union {
 358                 struct xenpf_settime           settime;
 359                 struct xenpf_add_memtype       add_memtype;
 360                 struct xenpf_del_memtype       del_memtype;
 361                 struct xenpf_read_memtype      read_memtype;
 362                 struct xenpf_microcode_update  microcode;
 363                 struct xenpf_platform_quirk    platform_quirk;
 364                 struct xenpf_firmware_info     firmware_info;
 365                 struct xenpf_enter_acpi_sleep  enter_acpi_sleep;
 366                 struct xenpf_change_freq       change_freq;
 367                 struct xenpf_getidletime       getidletime;
 368                 struct xenpf_set_processor_pminfo set_pminfo;
 369                 struct xenpf_pcpuinfo          pcpu_info;
 370                 struct xenpf_cpu_ol            cpu_ol;
 371                 struct xenpf_cpu_hotadd        cpu_add;
 372                 struct xenpf_mem_hotadd        mem_add;
 373                 struct xenpf_core_parking      core_parking;
 374                 uint8_t                        pad[128];
 375         } u;
 376 };
 377 DEFINE_GUEST_HANDLE_STRUCT(xen_platform_op_t);
 378
 379 #endif /* __XEN_PUBLIC_PLATFORM_H__ */