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
|
/*
* Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved.
* Copyright (C) 2013 Imagination Technologies Ltd.
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope 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, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
*/
#ifndef _ASM_VPE_H
#define _ASM_VPE_H
#include <linux/init.h>
#include <linux/list.h>
#include <linux/smp.h>
#include <linux/spinlock.h>
#define VPE_MODULE_NAME "vpe"
#define VPE_MODULE_MINOR 1
/* grab the likely amount of memory we will need. */
#ifdef CONFIG_MIPS_VPE_LOADER_TOM
#define P_SIZE (2 * 1024 * 1024)
#else
/* add an overhead to the max kmalloc size for non-striped symbols/etc */
#define P_SIZE (256 * 1024)
#endif
#define MAX_VPES 16
#define VPE_PATH_MAX 256
static inline int aprp_cpu_index(void)
{
#ifdef CONFIG_MIPS_CMP
return setup_max_cpus;
#else
extern int tclimit;
return tclimit;
#endif
}
enum vpe_state {
VPE_STATE_UNUSED = 0,
VPE_STATE_INUSE,
VPE_STATE_RUNNING
};
enum tc_state {
TC_STATE_UNUSED = 0,
TC_STATE_INUSE,
TC_STATE_RUNNING,
TC_STATE_DYNAMIC
};
struct vpe {
enum vpe_state state;
/* (device) minor associated with this vpe */
int minor;
/* elfloader stuff */
void *load_addr;
unsigned long len;
char *pbuffer;
unsigned long plen;
unsigned int uid, gid;
char cwd[VPE_PATH_MAX];
unsigned long __start;
/* tc's associated with this vpe */
struct list_head tc;
/* The list of vpe's */
struct list_head list;
/* shared symbol address */
void *shared_ptr;
/* the list of who wants to know when something major happens */
struct list_head notify;
unsigned int ntcs;
};
struct tc {
enum tc_state state;
int index;
struct vpe *pvpe; /* parent VPE */
struct list_head tc; /* The list of TC's with this VPE */
struct list_head list; /* The global list of tc's */
};
struct vpe_notifications {
void (*start)(int vpe);
void (*stop)(int vpe);
struct list_head list;
};
struct vpe_control {
spinlock_t vpe_list_lock;
struct list_head vpe_list; /* Virtual processing elements */
spinlock_t tc_list_lock;
struct list_head tc_list; /* Thread contexts */
};
extern unsigned long physical_memsize;
extern struct vpe_control vpecontrol;
extern const struct file_operations vpe_fops;
int vpe_notify(int index, struct vpe_notifications *notify);
void *vpe_get_shared(int index);
int vpe_getuid(int index);
int vpe_getgid(int index);
char *vpe_getcwd(int index);
struct vpe *get_vpe(int minor);
struct tc *get_tc(int index);
struct vpe *alloc_vpe(int minor);
struct tc *alloc_tc(int index);
void release_vpe(struct vpe *v);
void *alloc_progmem(unsigned long len);
void release_progmem(void *ptr);
int __weak vpe_run(struct vpe *v);
void cleanup_tc(struct tc *tc);
int __init vpe_module_init(void);
void __exit vpe_module_exit(void);
#endif /* _ASM_VPE_H */
|
