1 /*- 2 * Copyright (c) 1999 Luoqi Chen <[email protected]> 3 * Copyright (c) Peter Wemm <[email protected]> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * from: src/sys/alpha/include/pcpu.h,v 1.15 2004/11/05 19:16:44 jhb 28 * $FreeBSD$ 29 */ 30 31 #ifndef _MACHINE_PCPU_H_ 32 #define _MACHINE_PCPU_H_ 33 34 #include <machine/cpufunc.h> 35 #include <machine/pte.h> 36 37 #define PCPU_MD_COMMON_FIELDS \ 38 pd_entry_t *pc_segbase; /* curthread segbase */ \ 39 struct pmap *pc_curpmap; /* pmap of curthread */ \ 40 u_int32_t pc_next_asid; /* next ASID to alloc */ \ 41 u_int32_t pc_asid_generation; /* current ASID generation */ \ 42 u_int pc_pending_ipis; /* IPIs pending to this CPU */ \ 43 struct pcpu *pc_self; /* globally-uniqe self pointer */ 44 45 #ifdef __mips_n64 46 #define PCPU_MD_MIPS64_FIELDS \ 47 PCPU_MD_COMMON_FIELDS \ 48 char __pad[245] 49 #else 50 #define PCPU_MD_MIPS32_FIELDS \ 51 PCPU_MD_COMMON_FIELDS \ 52 char __pad[125] 53 #endif 54 55 #ifdef __mips_n64 56 #define PCPU_MD_FIELDS PCPU_MD_MIPS64_FIELDS 57 #else 58 #define PCPU_MD_FIELDS PCPU_MD_MIPS32_FIELDS 59 #endif 60 61 #ifdef _KERNEL 62 63 extern char pcpu_space[MAXCPU][PAGE_SIZE * 2]; 64 #define PCPU_ADDR(cpu) (struct pcpu *)(pcpu_space[(cpu)]) 65 66 extern struct pcpu *pcpup; 67 #define PCPUP pcpup 68 69 /* 70 * Since we use a wired TLB entry to map the same VA to a different 71 * physical page for each CPU, get_pcpu() must use the pc_self 72 * field to obtain a globally-unique pointer. 73 */ 74 #define get_pcpu() (PCPUP->pc_self) 75 76 #define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value)) 77 #define PCPU_GET(member) (PCPUP->pc_ ## member) 78 #define PCPU_INC(member) PCPU_ADD(member, 1) 79 #define PCPU_PTR(member) (&PCPUP->pc_ ## member) 80 #define PCPU_SET(member,value) (PCPUP->pc_ ## member = (value)) 81 #define PCPU_LAZY_INC(member) (++PCPUP->pc_ ## member) 82 83 #ifdef SMP 84 /* 85 * Instantiate the wired TLB entry at PCPU_TLB_ENTRY to map 'pcpu' at 'pcpup'. 86 */ 87 void mips_pcpu_tlb_init(struct pcpu *pcpu); 88 #endif 89 90 #endif /* _KERNEL */ 91 92 #endif /* !_MACHINE_PCPU_H_ */ 93