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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 | /* * 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 __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 */ |