1 /* QEMU accelerator interfaces
2  *
3  * Copyright (c) 2014 Red Hat Inc
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 deal
7  * in the Software without restriction, including without limitation the rights
8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9  * 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
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21  * THE SOFTWARE.
22  */
23 #ifndef HW_ACCEL_H
24 #define HW_ACCEL_H
25 
26 #include "qom/object.h"
27 #include "exec/hwaddr.h"
28 
29 typedef struct AccelState {
30     /*< private >*/
31     Object parent_obj;
32 } AccelState;
33 
34 typedef struct AccelClass {
35     /*< private >*/
36     ObjectClass parent_class;
37     /*< public >*/
38 
39     const char *name;
40     int (*init_machine)(MachineState *ms);
41     void (*setup_post)(MachineState *ms, AccelState *accel);
42     bool (*has_memory)(MachineState *ms, AddressSpace *as,
43                        hwaddr start_addr, hwaddr size);
44     bool *allowed;
45     /*
46      * Array of global properties that would be applied when specific
47      * accelerator is chosen. It works like MachineClass.compat_props
48      * but it's for accelerators not machines. Accelerator-provided
49      * global properties may be overridden by machine-type
50      * compat_props or user-provided global properties.
51      */
52     GPtrArray *compat_props;
53 } AccelClass;
54 
55 #define TYPE_ACCEL "accel"
56 
57 #define ACCEL_CLASS_SUFFIX  "-" TYPE_ACCEL
58 #define ACCEL_CLASS_NAME(a) (a ACCEL_CLASS_SUFFIX)
59 
60 #define ACCEL_CLASS(klass) \
61     OBJECT_CLASS_CHECK(AccelClass, (klass), TYPE_ACCEL)
62 #define ACCEL(obj) \
63     OBJECT_CHECK(AccelState, (obj), TYPE_ACCEL)
64 #define ACCEL_GET_CLASS(obj) \
65     OBJECT_GET_CLASS(AccelClass, (obj), TYPE_ACCEL)
66 
67 extern unsigned long tcg_tb_size;
68 
69 void configure_accelerator(MachineState *ms, const char *progname);
70 /* Called just before os_setup_post (ie just before drop OS privs) */
71 void accel_setup_post(MachineState *ms);
72 
73 #endif
74