vpe.h
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved.
* Copyright (C) 2013 Imagination Technologies Ltd.
*/
#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;
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);
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 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 */