/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved.
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* Copyright (C) 2013 Imagination Technologies Ltd.
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*/
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#ifndef _ASM_VPE_H
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#define _ASM_VPE_H
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/smp.h>
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#include <linux/spinlock.h>
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#define VPE_MODULE_NAME "vpe"
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#define VPE_MODULE_MINOR 1
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/* grab the likely amount of memory we will need. */
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#ifdef CONFIG_MIPS_VPE_LOADER_TOM
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#define P_SIZE (2 * 1024 * 1024)
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#else
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/* add an overhead to the max kmalloc size for non-striped symbols/etc */
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#define P_SIZE (256 * 1024)
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#endif
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#define MAX_VPES 16
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#define VPE_PATH_MAX 256
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static inline int aprp_cpu_index(void)
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{
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#ifdef CONFIG_MIPS_CMP
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return setup_max_cpus;
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#else
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extern int tclimit;
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return tclimit;
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#endif
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}
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enum vpe_state {
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VPE_STATE_UNUSED = 0,
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VPE_STATE_INUSE,
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VPE_STATE_RUNNING
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};
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enum tc_state {
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TC_STATE_UNUSED = 0,
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TC_STATE_INUSE,
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TC_STATE_RUNNING,
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TC_STATE_DYNAMIC
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};
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struct vpe {
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enum vpe_state state;
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/* (device) minor associated with this vpe */
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int minor;
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/* elfloader stuff */
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void *load_addr;
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unsigned long len;
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char *pbuffer;
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unsigned long plen;
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char cwd[VPE_PATH_MAX];
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unsigned long __start;
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/* tc's associated with this vpe */
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struct list_head tc;
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/* The list of vpe's */
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struct list_head list;
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/* shared symbol address */
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void *shared_ptr;
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/* the list of who wants to know when something major happens */
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struct list_head notify;
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unsigned int ntcs;
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};
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struct tc {
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enum tc_state state;
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int index;
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struct vpe *pvpe; /* parent VPE */
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struct list_head tc; /* The list of TC's with this VPE */
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struct list_head list; /* The global list of tc's */
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};
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struct vpe_notifications {
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void (*start)(int vpe);
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void (*stop)(int vpe);
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struct list_head list;
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};
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struct vpe_control {
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spinlock_t vpe_list_lock;
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struct list_head vpe_list; /* Virtual processing elements */
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spinlock_t tc_list_lock;
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struct list_head tc_list; /* Thread contexts */
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};
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extern struct vpe_control vpecontrol;
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extern const struct file_operations vpe_fops;
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int vpe_notify(int index, struct vpe_notifications *notify);
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void *vpe_get_shared(int index);
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char *vpe_getcwd(int index);
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struct vpe *get_vpe(int minor);
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struct tc *get_tc(int index);
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struct vpe *alloc_vpe(int minor);
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struct tc *alloc_tc(int index);
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void release_vpe(struct vpe *v);
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void *alloc_progmem(unsigned long len);
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void release_progmem(void *ptr);
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int vpe_run(struct vpe *v);
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void cleanup_tc(struct tc *tc);
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int __init vpe_module_init(void);
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void __exit vpe_module_exit(void);
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#endif /* _ASM_VPE_H */
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