1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/** @file
* PDM - Pluggable Device Manager, Queues.
*/
/*
* Copyright (C) 2006-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef VBOX_INCLUDED_vmm_pdmqueue_h
#define VBOX_INCLUDED_vmm_pdmqueue_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/types.h>
RT_C_DECLS_BEGIN
/** @defgroup grp_pdm_queue The PDM Queues API
* @ingroup grp_pdm
* @{
*/
/** Pointer to a PDM queue. */
typedef struct PDMQUEUE *PPDMQUEUE;
/** Pointer to a PDM queue item core. */
typedef union PDMQUEUEITEMCORE *PPDMQUEUEITEMCORE;
/**
* PDM queue item core.
*/
typedef union PDMQUEUEITEMCORE
{
/** The next queue item on the pending list (UINT32_MAX for NIL). */
uint32_t volatile iNext;
/** The next item about to be flushed. */
R3PTRTYPE(PPDMQUEUEITEMCORE) pNext;
/** Make sure the core is 64-bit wide. */
uint64_t u64View;
} PDMQUEUEITEMCORE;
/**
* Queue consumer callback for devices.
*
* @returns Success indicator.
* If false the item will not be removed and the flushing will stop.
* @param pDevIns The device instance.
* @param pItem The item to consume. Upon return this item will be freed.
* @remarks The device critical section will NOT be entered before calling the
* callback. No locks will be held, but for now it's safe to assume
* that only one EMT will do queue callbacks at any one time.
*/
typedef DECLCALLBACKTYPE(bool, FNPDMQUEUEDEV,(PPDMDEVINS pDevIns, PPDMQUEUEITEMCORE pItem));
/** Pointer to a FNPDMQUEUEDEV(). */
typedef FNPDMQUEUEDEV *PFNPDMQUEUEDEV;
/**
* Queue consumer callback for USB devices.
*
* @returns Success indicator.
* If false the item will not be removed and the flushing will stop.
* @param pUsbIns The USB device instance.
* @param pItem The item to consume. Upon return this item will be freed.
* @remarks No locks will be held, but for now it's safe to assume that only one
* EMT will do queue callbacks at any one time.
*/
typedef DECLCALLBACKTYPE(bool, FNPDMQUEUEUSB,(PPDMUSBINS pUsbIns, PPDMQUEUEITEMCORE pItem));
/** Pointer to a FNPDMQUEUEUSB(). */
typedef FNPDMQUEUEUSB *PFNPDMQUEUEUSB;
/**
* Queue consumer callback for drivers.
*
* @returns Success indicator.
* If false the item will not be removed and the flushing will stop.
* @param pDrvIns The driver instance.
* @param pItem The item to consume. Upon return this item will be freed.
* @remarks No locks will be held, but for now it's safe to assume that only one
* EMT will do queue callbacks at any one time.
*/
typedef DECLCALLBACKTYPE(bool, FNPDMQUEUEDRV,(PPDMDRVINS pDrvIns, PPDMQUEUEITEMCORE pItem));
/** Pointer to a FNPDMQUEUEDRV(). */
typedef FNPDMQUEUEDRV *PFNPDMQUEUEDRV;
/**
* Queue consumer callback for internal component.
*
* @returns Success indicator.
* If false the item will not be removed and the flushing will stop.
* @param pVM The cross context VM structure.
* @param pItem The item to consume. Upon return this item will be freed.
* @remarks No locks will be held, but for now it's safe to assume that only one
* EMT will do queue callbacks at any one time.
*/
typedef DECLCALLBACKTYPE(bool, FNPDMQUEUEINT,(PVM pVM, PPDMQUEUEITEMCORE pItem));
/** Pointer to a FNPDMQUEUEINT(). */
typedef FNPDMQUEUEINT *PFNPDMQUEUEINT;
/**
* Queue consumer callback for external component.
*
* @returns Success indicator.
* If false the item will not be removed and the flushing will stop.
* @param pvUser User argument.
* @param pItem The item to consume. Upon return this item will be freed.
* @remarks No locks will be held, but for now it's safe to assume that only one
* EMT will do queue callbacks at any one time.
*/
typedef DECLCALLBACKTYPE(bool, FNPDMQUEUEEXT,(void *pvUser, PPDMQUEUEITEMCORE pItem));
/** Pointer to a FNPDMQUEUEEXT(). */
typedef FNPDMQUEUEEXT *PFNPDMQUEUEEXT;
#ifdef VBOX_IN_VMM
VMMR3_INT_DECL(int) PDMR3QueueCreateDevice(PVM pVM, PPDMDEVINS pDevIns, size_t cbItem, uint32_t cItems,
uint32_t cMilliesInterval, PFNPDMQUEUEDEV pfnCallback,
bool fRZEnabled, const char *pszName, PDMQUEUEHANDLE *phQueue);
VMMR3_INT_DECL(int) PDMR3QueueCreateDriver(PVM pVM, PPDMDRVINS pDrvIns, size_t cbItem, uint32_t cItems,
uint32_t cMilliesInterval, PFNPDMQUEUEDRV pfnCallback,
const char *pszName, PDMQUEUEHANDLE *phQueue);
VMMR3_INT_DECL(int) PDMR3QueueCreateInternal(PVM pVM, size_t cbItem, uint32_t cItems,
uint32_t cMilliesInterval, PFNPDMQUEUEINT pfnCallback,
bool fRZEnabled, const char *pszName, PDMQUEUEHANDLE *phQueue);
VMMR3DECL(int) PDMR3QueueCreateExternal(PVM pVM, size_t cbItem, uint32_t cItems, uint32_t cMilliesInterval,
PFNPDMQUEUEEXT pfnCallback, void *pvUser, const char *pszName, PDMQUEUEHANDLE *phQueue);
VMMR3DECL(int) PDMR3QueueDestroy(PVM pVM, PDMQUEUEHANDLE hQueue, void *pvOwner);
VMMR3_INT_DECL(int) PDMR3QueueDestroyDevice(PVM pVM, PPDMDEVINS pDevIns);
VMMR3_INT_DECL(int) PDMR3QueueDestroyDriver(PVM pVM, PPDMDRVINS pDrvIns);
VMMR3DECL(void) PDMR3QueueFlushAll(PVM pVM);
#endif /* VBOX_IN_VMM */
VMMDECL(PPDMQUEUEITEMCORE) PDMQueueAlloc(PVMCC pVM, PDMQUEUEHANDLE hQueue, void *pvOwner);
VMMDECL(int) PDMQueueInsert(PVMCC pVM, PDMQUEUEHANDLE hQueue, void *pvOwner, PPDMQUEUEITEMCORE pInsert);
VMMDECL(int) PDMQueueFlushIfNecessary(PVMCC pVM, PDMQUEUEHANDLE hQueue, void *pvOwner);
/** @} */
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_vmm_pdmqueue_h */
|
