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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 | /* * 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 static inline int aprp_cpu_index(void) { extern int tclimit; return tclimit; } 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; 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); 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 */ |