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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 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 */
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