include/xen/interface/hvm/params.h

   1 /*
   2  * Permission is hereby granted, free of charge, to any person obtaining a copy
   3  * of this software and associated documentation files (the "Software"), to
   4  * deal in the Software without restriction, including without limitation the
   5  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   6  * sell copies of the Software, and to permit persons to whom the Software is
   7  * furnished to do so, subject to the following conditions:
   8  *
   9  * The above copyright notice and this permission notice shall be included in
  10  * all copies or substantial portions of the Software.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  13  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  15  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  16  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  17  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  18  * DEALINGS IN THE SOFTWARE.
  19  */
  20
  21 #ifndef __XEN_PUBLIC_HVM_PARAMS_H__
  22 #define __XEN_PUBLIC_HVM_PARAMS_H__
  23
  24 #include "hvm_op.h"
  25
  26 /*
  27  * Parameter space for HVMOP_{set,get}_param.
  28  */
  29
  30 /*
  31  * How should CPU0 event-channel notifications be delivered?
  32  * val[63:56] == 0: val[55:0] is a delivery GSI (Global System Interrupt).
  33  * val[63:56] == 1: val[55:0] is a delivery PCI INTx line, as follows:
  34  *                  Domain = val[47:32], Bus  = val[31:16],
  35  *                  DevFn  = val[15: 8], IntX = val[ 1: 0]
  36  * val[63:56] == 2: val[7:0] is a vector number.
  37  * If val == 0 then CPU0 event-channel notifications are not delivered.
  38  */
  39 #define HVM_PARAM_CALLBACK_IRQ 0
  40
  41 #define HVM_PARAM_STORE_PFN    1
  42 #define HVM_PARAM_STORE_EVTCHN 2
  43
  44 #define HVM_PARAM_PAE_ENABLED  4
  45
  46 #define HVM_PARAM_IOREQ_PFN    5
  47
  48 #define HVM_PARAM_BUFIOREQ_PFN 6
  49
  50 /*
  51  * Set mode for virtual timers (currently x86 only):
  52  *  delay_for_missed_ticks (default):
  53  *   Do not advance a vcpu's time beyond the correct delivery time for
  54  *   interrupts that have been missed due to preemption. Deliver missed
  55  *   interrupts when the vcpu is rescheduled and advance the vcpu's virtual
  56  *   time stepwise for each one.
  57  *  no_delay_for_missed_ticks:
  58  *   As above, missed interrupts are delivered, but guest time always tracks
  59  *   wallclock (i.e., real) time while doing so.
  60  *  no_missed_ticks_pending:
  61  *   No missed interrupts are held pending. Instead, to ensure ticks are
  62  *   delivered at some non-zero rate, if we detect missed ticks then the
  63  *   internal tick alarm is not disabled if the VCPU is preempted during the
  64  *   next tick period.
  65  *  one_missed_tick_pending:
  66  *   Missed interrupts are collapsed together and delivered as one 'late tick'.
  67  *   Guest time always tracks wallclock (i.e., real) time.
  68  */
  69 #define HVM_PARAM_TIMER_MODE   10
  70 #define HVMPTM_delay_for_missed_ticks    0
  71 #define HVMPTM_no_delay_for_missed_ticks 1
  72 #define HVMPTM_no_missed_ticks_pending   2
  73 #define HVMPTM_one_missed_tick_pending   3
  74
  75 /* Boolean: Enable virtual HPET (high-precision event timer)? (x86-only) */
  76 #define HVM_PARAM_HPET_ENABLED 11
  77
  78 /* Identity-map page directory used by Intel EPT when CR0.PG=0. */
  79 #define HVM_PARAM_IDENT_PT     12
  80
  81 /* Device Model domain, defaults to 0. */
  82 #define HVM_PARAM_DM_DOMAIN    13
  83
  84 /* ACPI S state: currently support S0 and S3 on x86. */
  85 #define HVM_PARAM_ACPI_S_STATE 14
  86
  87 /* TSS used on Intel when CR0.PE=0. */
  88 #define HVM_PARAM_VM86_TSS     15
  89
  90 /* Boolean: Enable aligning all periodic vpts to reduce interrupts */
  91 #define HVM_PARAM_VPT_ALIGN    16
  92
  93 #define HVM_NR_PARAMS          17
  94
  95 #endif /* __XEN_PUBLIC_HVM_PARAMS_H__ */