1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 4*4882a593Smuzhiyun * for more details. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved. 7*4882a593Smuzhiyun * Copyright (C) 2013 Imagination Technologies Ltd. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun #ifndef _ASM_VPE_H 10*4882a593Smuzhiyun #define _ASM_VPE_H 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <linux/init.h> 13*4882a593Smuzhiyun #include <linux/list.h> 14*4882a593Smuzhiyun #include <linux/smp.h> 15*4882a593Smuzhiyun #include <linux/spinlock.h> 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun #define VPE_MODULE_NAME "vpe" 18*4882a593Smuzhiyun #define VPE_MODULE_MINOR 1 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /* grab the likely amount of memory we will need. */ 21*4882a593Smuzhiyun #ifdef CONFIG_MIPS_VPE_LOADER_TOM 22*4882a593Smuzhiyun #define P_SIZE (2 * 1024 * 1024) 23*4882a593Smuzhiyun #else 24*4882a593Smuzhiyun /* add an overhead to the max kmalloc size for non-striped symbols/etc */ 25*4882a593Smuzhiyun #define P_SIZE (256 * 1024) 26*4882a593Smuzhiyun #endif 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun #define MAX_VPES 16 29*4882a593Smuzhiyun #define VPE_PATH_MAX 256 30*4882a593Smuzhiyun aprp_cpu_index(void)31*4882a593Smuzhiyunstatic inline int aprp_cpu_index(void) 32*4882a593Smuzhiyun { 33*4882a593Smuzhiyun #ifdef CONFIG_MIPS_CMP 34*4882a593Smuzhiyun return setup_max_cpus; 35*4882a593Smuzhiyun #else 36*4882a593Smuzhiyun extern int tclimit; 37*4882a593Smuzhiyun return tclimit; 38*4882a593Smuzhiyun #endif 39*4882a593Smuzhiyun } 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun enum vpe_state { 42*4882a593Smuzhiyun VPE_STATE_UNUSED = 0, 43*4882a593Smuzhiyun VPE_STATE_INUSE, 44*4882a593Smuzhiyun VPE_STATE_RUNNING 45*4882a593Smuzhiyun }; 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun enum tc_state { 48*4882a593Smuzhiyun TC_STATE_UNUSED = 0, 49*4882a593Smuzhiyun TC_STATE_INUSE, 50*4882a593Smuzhiyun TC_STATE_RUNNING, 51*4882a593Smuzhiyun TC_STATE_DYNAMIC 52*4882a593Smuzhiyun }; 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun struct vpe { 55*4882a593Smuzhiyun enum vpe_state state; 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun /* (device) minor associated with this vpe */ 58*4882a593Smuzhiyun int minor; 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun /* elfloader stuff */ 61*4882a593Smuzhiyun void *load_addr; 62*4882a593Smuzhiyun unsigned long len; 63*4882a593Smuzhiyun char *pbuffer; 64*4882a593Smuzhiyun unsigned long plen; 65*4882a593Smuzhiyun char cwd[VPE_PATH_MAX]; 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun unsigned long __start; 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun /* tc's associated with this vpe */ 70*4882a593Smuzhiyun struct list_head tc; 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun /* The list of vpe's */ 73*4882a593Smuzhiyun struct list_head list; 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun /* shared symbol address */ 76*4882a593Smuzhiyun void *shared_ptr; 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun /* the list of who wants to know when something major happens */ 79*4882a593Smuzhiyun struct list_head notify; 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun unsigned int ntcs; 82*4882a593Smuzhiyun }; 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun struct tc { 85*4882a593Smuzhiyun enum tc_state state; 86*4882a593Smuzhiyun int index; 87*4882a593Smuzhiyun 88*4882a593Smuzhiyun struct vpe *pvpe; /* parent VPE */ 89*4882a593Smuzhiyun struct list_head tc; /* The list of TC's with this VPE */ 90*4882a593Smuzhiyun struct list_head list; /* The global list of tc's */ 91*4882a593Smuzhiyun }; 92*4882a593Smuzhiyun 93*4882a593Smuzhiyun struct vpe_notifications { 94*4882a593Smuzhiyun void (*start)(int vpe); 95*4882a593Smuzhiyun void (*stop)(int vpe); 96*4882a593Smuzhiyun 97*4882a593Smuzhiyun struct list_head list; 98*4882a593Smuzhiyun }; 99*4882a593Smuzhiyun 100*4882a593Smuzhiyun struct vpe_control { 101*4882a593Smuzhiyun spinlock_t vpe_list_lock; 102*4882a593Smuzhiyun struct list_head vpe_list; /* Virtual processing elements */ 103*4882a593Smuzhiyun spinlock_t tc_list_lock; 104*4882a593Smuzhiyun struct list_head tc_list; /* Thread contexts */ 105*4882a593Smuzhiyun }; 106*4882a593Smuzhiyun 107*4882a593Smuzhiyun extern unsigned long physical_memsize; 108*4882a593Smuzhiyun extern struct vpe_control vpecontrol; 109*4882a593Smuzhiyun extern const struct file_operations vpe_fops; 110*4882a593Smuzhiyun 111*4882a593Smuzhiyun int vpe_notify(int index, struct vpe_notifications *notify); 112*4882a593Smuzhiyun 113*4882a593Smuzhiyun void *vpe_get_shared(int index); 114*4882a593Smuzhiyun char *vpe_getcwd(int index); 115*4882a593Smuzhiyun 116*4882a593Smuzhiyun struct vpe *get_vpe(int minor); 117*4882a593Smuzhiyun struct tc *get_tc(int index); 118*4882a593Smuzhiyun struct vpe *alloc_vpe(int minor); 119*4882a593Smuzhiyun struct tc *alloc_tc(int index); 120*4882a593Smuzhiyun void release_vpe(struct vpe *v); 121*4882a593Smuzhiyun 122*4882a593Smuzhiyun void *alloc_progmem(unsigned long len); 123*4882a593Smuzhiyun void release_progmem(void *ptr); 124*4882a593Smuzhiyun 125*4882a593Smuzhiyun int vpe_run(struct vpe *v); 126*4882a593Smuzhiyun void cleanup_tc(struct tc *tc); 127*4882a593Smuzhiyun 128*4882a593Smuzhiyun int __init vpe_module_init(void); 129*4882a593Smuzhiyun void __exit vpe_module_exit(void); 130*4882a593Smuzhiyun #endif /* _ASM_VPE_H */ 131