1/*
  2 * This file is subject to the terms and conditions of the GNU General Public
  3 * License.  See the file "COPYING" in the main directory of this archive
  4 * for more details.
  5 *
  6 * Copyright (C) 2005 MIPS Technologies, Inc.  All rights reserved.
  7 * Copyright (C) 2013 Imagination Technologies Ltd.
 
 
 
 
 
 
 
 
 
 
 
 
 
  8 */
 
  9#ifndef _ASM_VPE_H
 10#define _ASM_VPE_H
 11
 12#include <linux/init.h>
 13#include <linux/list.h>
 14#include <linux/smp.h>
 15#include <linux/spinlock.h>
 16
 17#define VPE_MODULE_NAME "vpe"
 18#define VPE_MODULE_MINOR 1
 19
 20/* grab the likely amount of memory we will need. */
 21#ifdef CONFIG_MIPS_VPE_LOADER_TOM
 22#define P_SIZE (2 * 1024 * 1024)
 23#else
 24/* add an overhead to the max kmalloc size for non-striped symbols/etc */
 25#define P_SIZE (256 * 1024)
 26#endif
 27
 28#define MAX_VPES 16
 29
 30static inline int aprp_cpu_index(void)
 31{
 32#ifdef CONFIG_MIPS_CMP
 33	return setup_max_cpus;
 34#else
 35	extern int tclimit;
 36	return tclimit;
 37#endif
 38}
 39
 40enum vpe_state {
 41	VPE_STATE_UNUSED = 0,
 42	VPE_STATE_INUSE,
 43	VPE_STATE_RUNNING
 44};
 45
 46enum tc_state {
 47	TC_STATE_UNUSED = 0,
 48	TC_STATE_INUSE,
 49	TC_STATE_RUNNING,
 50	TC_STATE_DYNAMIC
 51};
 52
 53struct vpe {
 54	enum vpe_state state;
 55
 56	/* (device) minor associated with this vpe */
 57	int minor;
 58
 59	/* elfloader stuff */
 60	void *load_addr;
 61	unsigned long len;
 62	char *pbuffer;
 63	unsigned long plen;
 64
 65	unsigned long __start;
 66
 67	/* tc's associated with this vpe */
 68	struct list_head tc;
 69
 70	/* The list of vpe's */
 71	struct list_head list;
 72
 73	/* shared symbol address */
 74	void *shared_ptr;
 75
 76	/* the list of who wants to know when something major happens */
 77	struct list_head notify;
 78
 79	unsigned int ntcs;
 80};
 81
 82struct tc {
 83	enum tc_state state;
 84	int index;
 85
 86	struct vpe *pvpe;	/* parent VPE */
 87	struct list_head tc;	/* The list of TC's with this VPE */
 88	struct list_head list;	/* The global list of tc's */
 89};
 90
 91struct vpe_notifications {
 92	void (*start)(int vpe);
 93	void (*stop)(int vpe);
 94
 95	struct list_head list;
 96};
 97
 98struct vpe_control {
 99	spinlock_t vpe_list_lock;
100	struct list_head vpe_list;      /* Virtual processing elements */
101	spinlock_t tc_list_lock;
102	struct list_head tc_list;       /* Thread contexts */
103};
104
105extern unsigned long physical_memsize;
106extern struct vpe_control vpecontrol;
107extern const struct file_operations vpe_fops;
108
109int vpe_notify(int index, struct vpe_notifications *notify);
110
111void *vpe_get_shared(int index);
112
113struct vpe *get_vpe(int minor);
114struct tc *get_tc(int index);
115struct vpe *alloc_vpe(int minor);
116struct tc *alloc_tc(int index);
117void release_vpe(struct vpe *v);
118
119void *alloc_progmem(unsigned long len);
120void release_progmem(void *ptr);
121
122int vpe_run(struct vpe *v);
123void cleanup_tc(struct tc *tc);
 
 
124
125int __init vpe_module_init(void);
126void __exit vpe_module_exit(void);
127#endif /* _ASM_VPE_H */

 1/*
 
 
 
 
 2 * Copyright (C) 2005 MIPS Technologies, Inc.  All rights reserved.
 3 *
 4 *  This program is free software; you can distribute it and/or modify it
 5 *  under the terms of the GNU General Public License (Version 2) as
 6 *  published by the Free Software Foundation.
 7 *
 8 *  This program is distributed in the hope it will be useful, but WITHOUT
 9 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
11 *  for more details.
12 *
13 *  You should have received a copy of the GNU General Public License along
14 *  with this program; if not, write to the Free Software Foundation, Inc.,
15 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
16 *
17 */
18
19#ifndef _ASM_VPE_H
20#define _ASM_VPE_H
21
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
22struct vpe_notifications {
23	void (*start)(int vpe);
24	void (*stop)(int vpe);
25
26	struct list_head list;
27};
28
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
29
30extern int vpe_notify(int index, struct vpe_notifications *notify);
 
31
32extern void *vpe_get_shared(int index);
33extern int vpe_getuid(int index);
34extern int vpe_getgid(int index);
35extern char *vpe_getcwd(int index);
36
 
 
37#endif /* _ASM_VPE_H */