/root/src/xen/xen/include/public/hvm/ioreq.h
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * ioreq.h: I/O request definitions for device models |
3 | | * Copyright (c) 2004, Intel Corporation. |
4 | | * |
5 | | * Permission is hereby granted, free of charge, to any person obtaining a copy |
6 | | * of this software and associated documentation files (the "Software"), to |
7 | | * deal in the Software without restriction, including without limitation the |
8 | | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
9 | | * sell copies of the Software, and to permit persons to whom the Software is |
10 | | * furnished to do so, subject to the following conditions: |
11 | | * |
12 | | * The above copyright notice and this permission notice shall be included in |
13 | | * all copies or substantial portions of the Software. |
14 | | * |
15 | | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
16 | | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
17 | | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
18 | | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
19 | | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
20 | | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
21 | | * DEALINGS IN THE SOFTWARE. |
22 | | */ |
23 | | |
24 | | #ifndef _IOREQ_H_ |
25 | | #define _IOREQ_H_ |
26 | | |
27 | 256k | #define IOREQ_READ 1 |
28 | 104k | #define IOREQ_WRITE 0 |
29 | | |
30 | 160k | #define STATE_IOREQ_NONE 0 |
31 | 160k | #define STATE_IOREQ_READY 1 |
32 | 0 | #define STATE_IOREQ_INPROCESS 2 |
33 | 0 | #define STATE_IORESP_READY 3 |
34 | | |
35 | 100k | #define IOREQ_TYPE_PIO 0 /* pio */ |
36 | 565k | #define IOREQ_TYPE_COPY 1 /* mmio ops */ |
37 | 0 | #define IOREQ_TYPE_PCI_CONFIG 2 |
38 | 0 | #define IOREQ_TYPE_TIMEOFFSET 7 |
39 | 0 | #define IOREQ_TYPE_INVALIDATE 8 /* mapcache */ |
40 | | |
41 | | /* |
42 | | * VMExit dispatcher should cooperate with instruction decoder to |
43 | | * prepare this structure and notify service OS and DM by sending |
44 | | * virq. |
45 | | * |
46 | | * For I/O type IOREQ_TYPE_PCI_CONFIG, the physical address is formatted |
47 | | * as follows: |
48 | | * |
49 | | * 63....48|47..40|39..35|34..32|31........0 |
50 | | * SEGMENT |BUS |DEV |FN |OFFSET |
51 | | */ |
52 | | struct ioreq { |
53 | | uint64_t addr; /* physical address */ |
54 | | uint64_t data; /* data (or paddr of data) */ |
55 | | uint32_t count; /* for rep prefixes */ |
56 | | uint32_t size; /* size in bytes */ |
57 | | uint32_t vp_eport; /* evtchn for notifications to/from device model */ |
58 | | uint16_t _pad0; |
59 | | uint8_t state:4; |
60 | | uint8_t data_is_ptr:1; /* if 1, data above is the guest paddr |
61 | | * of the real data to use. */ |
62 | | uint8_t dir:1; /* 1=read, 0=write */ |
63 | | uint8_t df:1; |
64 | | uint8_t _pad1:1; |
65 | | uint8_t type; /* I/O type */ |
66 | | }; |
67 | | typedef struct ioreq ioreq_t; |
68 | | |
69 | | struct shared_iopage { |
70 | | struct ioreq vcpu_ioreq[1]; |
71 | | }; |
72 | | typedef struct shared_iopage shared_iopage_t; |
73 | | |
74 | | struct buf_ioreq { |
75 | | uint8_t type; /* I/O type */ |
76 | | uint8_t pad:1; |
77 | | uint8_t dir:1; /* 1=read, 0=write */ |
78 | | uint8_t size:2; /* 0=>1, 1=>2, 2=>4, 3=>8. If 8, use two buf_ioreqs */ |
79 | | uint32_t addr:20;/* physical address */ |
80 | | uint32_t data; /* data */ |
81 | | }; |
82 | | typedef struct buf_ioreq buf_ioreq_t; |
83 | | |
84 | 0 | #define IOREQ_BUFFER_SLOT_NUM 511 /* 8 bytes each, plus 2 4-byte indexes */ |
85 | | struct buffered_iopage { |
86 | | #ifdef __XEN__ |
87 | | union bufioreq_pointers { |
88 | | struct { |
89 | | #endif |
90 | | uint32_t read_pointer; |
91 | | uint32_t write_pointer; |
92 | | #ifdef __XEN__ |
93 | | }; |
94 | | uint64_t full; |
95 | | } ptrs; |
96 | | #endif |
97 | | buf_ioreq_t buf_ioreq[IOREQ_BUFFER_SLOT_NUM]; |
98 | | }; /* NB. Size of this structure must be no greater than one page. */ |
99 | | typedef struct buffered_iopage buffered_iopage_t; |
100 | | |
101 | | /* |
102 | | * ACPI Control/Event register locations. Location is controlled by a |
103 | | * version number in HVM_PARAM_ACPI_IOPORTS_LOCATION. |
104 | | */ |
105 | | |
106 | | /* |
107 | | * Version 0 (default): Traditional (obsolete) Xen locations. |
108 | | * |
109 | | * These are now only used for compatibility with VMs migrated |
110 | | * from older Xen versions. |
111 | | */ |
112 | 0 | #define ACPI_PM1A_EVT_BLK_ADDRESS_V0 0x1f40 |
113 | | #define ACPI_PM1A_CNT_BLK_ADDRESS_V0 (ACPI_PM1A_EVT_BLK_ADDRESS_V0 + 0x04) |
114 | 0 | #define ACPI_PM_TMR_BLK_ADDRESS_V0 (ACPI_PM1A_EVT_BLK_ADDRESS_V0 + 0x08) |
115 | | #define ACPI_GPE0_BLK_ADDRESS_V0 (ACPI_PM_TMR_BLK_ADDRESS_V0 + 0x20) |
116 | | #define ACPI_GPE0_BLK_LEN_V0 0x08 |
117 | | |
118 | | /* Version 1: Locations preferred by modern Qemu (including Qemu-trad). */ |
119 | 0 | #define ACPI_PM1A_EVT_BLK_ADDRESS_V1 0xb000 |
120 | | #define ACPI_PM1A_CNT_BLK_ADDRESS_V1 (ACPI_PM1A_EVT_BLK_ADDRESS_V1 + 0x04) |
121 | 0 | #define ACPI_PM_TMR_BLK_ADDRESS_V1 (ACPI_PM1A_EVT_BLK_ADDRESS_V1 + 0x08) |
122 | | #define ACPI_GPE0_BLK_ADDRESS_V1 0xafe0 |
123 | | #define ACPI_GPE0_BLK_LEN_V1 0x04 |
124 | | |
125 | | /* Compatibility definitions for the default location (version 0). */ |
126 | | #define ACPI_PM1A_EVT_BLK_ADDRESS ACPI_PM1A_EVT_BLK_ADDRESS_V0 |
127 | | #define ACPI_PM1A_CNT_BLK_ADDRESS ACPI_PM1A_CNT_BLK_ADDRESS_V0 |
128 | | #define ACPI_PM_TMR_BLK_ADDRESS ACPI_PM_TMR_BLK_ADDRESS_V0 |
129 | | #define ACPI_GPE0_BLK_ADDRESS ACPI_GPE0_BLK_ADDRESS_V0 |
130 | | #define ACPI_GPE0_BLK_LEN ACPI_GPE0_BLK_LEN_V0 |
131 | | |
132 | | |
133 | | #endif /* _IOREQ_H_ */ |
134 | | |
135 | | /* |
136 | | * Local variables: |
137 | | * mode: C |
138 | | * c-file-style: "BSD" |
139 | | * c-basic-offset: 4 |
140 | | * tab-width: 4 |
141 | | * indent-tabs-mode: nil |
142 | | * End: |
143 | | */ |