xref: /titanic_41/usr/src/uts/common/xen/public/hvm/params.h (revision ad09f8b827db90c9a0093f0b6382803fa64a5fd1)
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  * If val == 0 then CPU0 event-channel notifications are not delivered.
37  */
38 #define HVM_PARAM_CALLBACK_IRQ 0
39 
40 /*
41  * These are not used by Xen. They are here for convenience of HVM-guest
42  * xenbus implementations.
43  */
44 #define HVM_PARAM_STORE_PFN    1
45 #define HVM_PARAM_STORE_EVTCHN 2
46 
47 #define HVM_PARAM_PAE_ENABLED  4
48 
49 #define HVM_PARAM_IOREQ_PFN    5
50 
51 #define HVM_PARAM_BUFIOREQ_PFN 6
52 
53 #ifdef __ia64__
54 
55 #define HVM_PARAM_NVRAM_FD     7
56 #define HVM_PARAM_VHPT_SIZE    8
57 #define HVM_PARAM_BUFPIOREQ_PFN	9
58 
59 #elif defined(__i386__) || defined(__x86_64__)
60 
61 /* Expose Viridian interfaces to this HVM guest? */
62 #define HVM_PARAM_VIRIDIAN     9
63 
64 #endif
65 
66 /*
67  * Set mode for virtual timers (currently x86 only):
68  *  delay_for_missed_ticks (default):
69  *   Do not advance a vcpu's time beyond the correct delivery time for
70  *   interrupts that have been missed due to preemption. Deliver missed
71  *   interrupts when the vcpu is rescheduled and advance the vcpu's virtual
72  *   time stepwise for each one.
73  *  no_delay_for_missed_ticks:
74  *   As above, missed interrupts are delivered, but guest time always tracks
75  *   wallclock (i.e., real) time while doing so.
76  *  no_missed_ticks_pending:
77  *   No missed interrupts are held pending. Instead, to ensure ticks are
78  *   delivered at some non-zero rate, if we detect missed ticks then the
79  *   internal tick alarm is not disabled if the VCPU is preempted during the
80  *   next tick period.
81  *  one_missed_tick_pending:
82  *   Missed interrupts are collapsed together and delivered as one 'late tick'.
83  *   Guest time always tracks wallclock (i.e., real) time.
84  */
85 #define HVM_PARAM_TIMER_MODE   10
86 #define HVMPTM_delay_for_missed_ticks    0
87 #define HVMPTM_no_delay_for_missed_ticks 1
88 #define HVMPTM_no_missed_ticks_pending   2
89 #define HVMPTM_one_missed_tick_pending   3
90 
91 /* Boolean: Enable virtual HPET (high-precision event timer)? (x86-only) */
92 #define HVM_PARAM_HPET_ENABLED 11
93 
94 /* Identity-map page directory used by Intel EPT when CR0.PG=0. */
95 #define HVM_PARAM_IDENT_PT     12
96 
97 /* Device Model domain, defaults to 0. */
98 #define HVM_PARAM_DM_DOMAIN    13
99 
100 /* ACPI S state: currently support S0 and S3 on x86. */
101 #define HVM_PARAM_ACPI_S_STATE 14
102 
103 /* TSS used on Intel when CR0.PE=0. */
104 #define HVM_PARAM_VM86_TSS     15
105 
106 /* Boolean: Enable aligning all periodic vpts to reduce interrupts */
107 #define HVM_PARAM_VPT_ALIGN    16
108 
109 #define HVM_NR_PARAMS          17
110 
111 #endif /* __XEN_PUBLIC_HVM_PARAMS_H__ */
112