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.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 39struct xenpf_settime { 40 /* IN variables. */ 41 uint32_t secs; 42 uint32_t nsecs; 43 uint64_t system_time; 44}; 45DEFINE_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 55struct xenpf_add_memtype { 56 /* IN variables. */ 57 unsigned long mfn; 58 uint64_t nr_mfns; 59 uint32_t type; 60 /* OUT variables. */ 61 uint32_t handle; 62 uint32_t reg; 63}; 64DEFINE_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 74struct xenpf_del_memtype { 75 /* IN variables. */ 76 uint32_t handle; 77 uint32_t reg; 78}; 79DEFINE_GUEST_HANDLE_STRUCT(xenpf_del_memtype_t); 80 81/* Read current type of an MTRR (x86-specific). */ 82#define XENPF_read_memtype 33 83struct xenpf_read_memtype { 84 /* IN variables. */ 85 uint32_t reg; 86 /* OUT variables. */ 87 unsigned long mfn; 88 uint64_t nr_mfns; 89 uint32_t type; 90}; 91DEFINE_GUEST_HANDLE_STRUCT(xenpf_read_memtype_t); 92 93#define XENPF_microcode_update 35 94struct xenpf_microcode_update { 95 /* IN variables. */ 96 GUEST_HANDLE(void) data; /* Pointer to microcode data */ 97 uint32_t length; /* Length of microcode data. */ 98}; 99DEFINE_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 */ 105struct xenpf_platform_quirk { 106 /* IN variables. */ 107 uint32_t quirk_id; 108}; 109DEFINE_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 */ 115struct xenpf_firmware_info { 116 /* IN variables. */ 117 uint32_t type; 118 uint32_t index; 119 /* OUT variables. */ 120 union { 121 struct { 122 /* Int13, Fn48: Check Extensions Present. */ 123 uint8_t device; /* %dl: bios device number */ 124 uint8_t version; /* %ah: major version */ 125 uint16_t interface_support; /* %cx: support bitmap */ 126 /* Int13, Fn08: Legacy Get Device Parameters. */ 127 uint16_t legacy_max_cylinder; /* %cl[7:6]:%ch: max cyl # */ 128 uint8_t legacy_max_head; /* %dh: max head # */ 129 uint8_t legacy_sectors_per_track; /* %cl[5:0]: max sector # */ 130 /* Int13, Fn41: Get Device Parameters (as filled into %ds:%esi). */ 131 /* NB. First uint16_t of buffer must be set to buffer size. */ 132 GUEST_HANDLE(void) edd_params; 133 } disk_info; /* XEN_FW_DISK_INFO */ 134 struct { 135 uint8_t device; /* bios device number */ 136 uint32_t mbr_signature; /* offset 0x1b8 in mbr */ 137 } disk_mbr_signature; /* XEN_FW_DISK_MBR_SIGNATURE */ 138 struct { 139 /* Int10, AX=4F15: Get EDID info. */ 140 uint8_t capabilities; 141 uint8_t edid_transfer_time; 142 /* must refer to 128-byte buffer */ 143 GUEST_HANDLE(uchar) edid; 144 } vbeddc_info; /* XEN_FW_VBEDDC_INFO */ 145 } u; 146}; 147DEFINE_GUEST_HANDLE_STRUCT(xenpf_firmware_info_t); 148 149#define XENPF_enter_acpi_sleep 51 150struct xenpf_enter_acpi_sleep { 151 /* IN variables */ 152 uint16_t pm1a_cnt_val; /* PM1a control value. */ 153 uint16_t pm1b_cnt_val; /* PM1b control value. */ 154 uint32_t sleep_state; /* Which state to enter (Sn). */ 155 uint32_t flags; /* Must be zero. */ 156}; 157DEFINE_GUEST_HANDLE_STRUCT(xenpf_enter_acpi_sleep_t); 158 159#define XENPF_change_freq 52 160struct xenpf_change_freq { 161 /* IN variables */ 162 uint32_t flags; /* Must be zero. */ 163 uint32_t cpu; /* Physical cpu. */ 164 uint64_t freq; /* New frequency (Hz). */ 165}; 166DEFINE_GUEST_HANDLE_STRUCT(xenpf_change_freq_t); 167 168/* 169 * Get idle times (nanoseconds since boot) for physical CPUs specified in the 170 * @cpumap_bitmap with range [0..@cpumap_nr_cpus-1]. The @idletime array is 171 * indexed by CPU number; only entries with the corresponding @cpumap_bitmap 172 * bit set are written to. On return, @cpumap_bitmap is modified so that any 173 * non-existent CPUs are cleared. Such CPUs have their @idletime array entry 174 * cleared. 175 */ 176#define XENPF_getidletime 53 177struct xenpf_getidletime { 178 /* IN/OUT variables */ 179 /* IN: CPUs to interrogate; OUT: subset of IN which are present */ 180 GUEST_HANDLE(uchar) cpumap_bitmap; 181 /* IN variables */ 182 /* Size of cpumap bitmap. */ 183 uint32_t cpumap_nr_cpus; 184 /* Must be indexable for every cpu in cpumap_bitmap. */ 185 GUEST_HANDLE(uint64_t) idletime; 186 /* OUT variables */ 187 /* System time when the idletime snapshots were taken. */ 188 uint64_t now; 189}; 190DEFINE_GUEST_HANDLE_STRUCT(xenpf_getidletime_t); 191 192#define XENPF_set_processor_pminfo 54 193 194/* ability bits */ 195#define XEN_PROCESSOR_PM_CX 1 196#define XEN_PROCESSOR_PM_PX 2 197#define XEN_PROCESSOR_PM_TX 4 198 199/* cmd type */ 200#define XEN_PM_CX 0 201#define XEN_PM_PX 1 202#define XEN_PM_TX 2 203#define XEN_PM_PDC 3 204/* Px sub info type */ 205#define XEN_PX_PCT 1 206#define XEN_PX_PSS 2 207#define XEN_PX_PPC 4 208#define XEN_PX_PSD 8 209 210struct xen_power_register { 211 uint32_t space_id; 212 uint32_t bit_width; 213 uint32_t bit_offset; 214 uint32_t access_size; 215 uint64_t address; 216}; 217 218struct xen_processor_csd { 219 uint32_t domain; /* domain number of one dependent group */ 220 uint32_t coord_type; /* coordination type */ 221 uint32_t num; /* number of processors in same domain */ 222}; 223DEFINE_GUEST_HANDLE_STRUCT(xen_processor_csd); 224 225struct xen_processor_cx { 226 struct xen_power_register reg; /* GAS for Cx trigger register */ 227 uint8_t type; /* cstate value, c0: 0, c1: 1, ... */ 228 uint32_t latency; /* worst latency (ms) to enter/exit this cstate */ 229 uint32_t power; /* average power consumption(mW) */ 230 uint32_t dpcnt; /* number of dependency entries */ 231 GUEST_HANDLE(xen_processor_csd) dp; /* NULL if no dependency */ 232}; 233DEFINE_GUEST_HANDLE_STRUCT(xen_processor_cx); 234 235struct xen_processor_flags { 236 uint32_t bm_control:1; 237 uint32_t bm_check:1; 238 uint32_t has_cst:1; 239 uint32_t power_setup_done:1; 240 uint32_t bm_rld_set:1; 241}; 242 243struct xen_processor_power { 244 uint32_t count; /* number of C state entries in array below */ 245 struct xen_processor_flags flags; /* global flags of this processor */ 246 GUEST_HANDLE(xen_processor_cx) states; /* supported c states */ 247}; 248 249struct xen_pct_register { 250 uint8_t descriptor; 251 uint16_t length; 252 uint8_t space_id; 253 uint8_t bit_width; 254 uint8_t bit_offset; 255 uint8_t reserved; 256 uint64_t address; 257}; 258 259struct xen_processor_px { 260 uint64_t core_frequency; /* megahertz */ 261 uint64_t power; /* milliWatts */ 262 uint64_t transition_latency; /* microseconds */ 263 uint64_t bus_master_latency; /* microseconds */ 264 uint64_t control; /* control value */ 265 uint64_t status; /* success indicator */ 266}; 267DEFINE_GUEST_HANDLE_STRUCT(xen_processor_px); 268 269struct xen_psd_package { 270 uint64_t num_entries; 271 uint64_t revision; 272 uint64_t domain; 273 uint64_t coord_type; 274 uint64_t num_processors; 275}; 276 277struct xen_processor_performance { 278 uint32_t flags; /* flag for Px sub info type */ 279 uint32_t platform_limit; /* Platform limitation on freq usage */ 280 struct xen_pct_register control_register; 281 struct xen_pct_register status_register; 282 uint32_t state_count; /* total available performance states */ 283 GUEST_HANDLE(xen_processor_px) states; 284 struct xen_psd_package domain_info; 285 uint32_t shared_type; /* coordination type of this processor */ 286}; 287DEFINE_GUEST_HANDLE_STRUCT(xen_processor_performance); 288 289struct xenpf_set_processor_pminfo { 290 /* IN variables */ 291 uint32_t id; /* ACPI CPU ID */ 292 uint32_t type; /* {XEN_PM_CX, XEN_PM_PX} */ 293 union { 294 struct xen_processor_power power;/* Cx: _CST/_CSD */ 295 struct xen_processor_performance perf; /* Px: _PPC/_PCT/_PSS/_PSD */ 296 GUEST_HANDLE(uint32_t) pdc; 297 }; 298}; 299DEFINE_GUEST_HANDLE_STRUCT(xenpf_set_processor_pminfo); 300 301#define XENPF_get_cpuinfo 55 302struct xenpf_pcpuinfo { 303 /* IN */ 304 uint32_t xen_cpuid; 305 /* OUT */ 306 /* The maxium cpu_id that is present */ 307 uint32_t max_present; 308#define XEN_PCPU_FLAGS_ONLINE 1 309 /* Correponding xen_cpuid is not present*/ 310#define XEN_PCPU_FLAGS_INVALID 2 311 uint32_t flags; 312 uint32_t apic_id; 313 uint32_t acpi_id; 314}; 315DEFINE_GUEST_HANDLE_STRUCT(xenpf_pcpuinfo); 316 317struct xen_platform_op { 318 uint32_t cmd; 319 uint32_t interface_version; /* XENPF_INTERFACE_VERSION */ 320 union { 321 struct xenpf_settime settime; 322 struct xenpf_add_memtype add_memtype; 323 struct xenpf_del_memtype del_memtype; 324 struct xenpf_read_memtype read_memtype; 325 struct xenpf_microcode_update microcode; 326 struct xenpf_platform_quirk platform_quirk; 327 struct xenpf_firmware_info firmware_info; 328 struct xenpf_enter_acpi_sleep enter_acpi_sleep; 329 struct xenpf_change_freq change_freq; 330 struct xenpf_getidletime getidletime; 331 struct xenpf_set_processor_pminfo set_pminfo; 332 struct xenpf_pcpuinfo pcpu_info; 333 uint8_t pad[128]; 334 } u; 335}; 336DEFINE_GUEST_HANDLE_STRUCT(xen_platform_op_t); 337 338#endif /* __XEN_PUBLIC_PLATFORM_H__ */ 339