1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1999 Luoqi Chen <[email protected]> 5 * Copyright (c) Peter Wemm <[email protected]> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * from: src/sys/alpha/include/pcpu.h,v 1.15 2004/11/05 19:16:44 jhb 30 * $FreeBSD$ 31 */ 32 33 #ifndef _MACHINE_PCPU_H_ 34 #define _MACHINE_PCPU_H_ 35 36 #include <machine/cpufunc.h> 37 #include <machine/pte.h> 38 39 #define PCPU_MD_COMMON_FIELDS \ 40 pd_entry_t *pc_segbase; /* curthread segbase */ \ 41 struct pmap *pc_curpmap; /* pmap of curthread */ \ 42 u_int32_t pc_next_asid; /* next ASID to alloc */ \ 43 u_int32_t pc_asid_generation; /* current ASID generation */ \ 44 u_int pc_pending_ipis; /* IPIs pending to this CPU */ \ 45 struct pcpu *pc_self; /* globally-uniqe self pointer */ 46 47 #ifdef __mips_n64 48 #define PCPU_MD_MIPS64_FIELDS \ 49 PCPU_MD_COMMON_FIELDS \ 50 char __pad[245] 51 #else 52 #define PCPU_MD_MIPS32_FIELDS \ 53 PCPU_MD_COMMON_FIELDS \ 54 pt_entry_t *pc_cmap1_ptep; /* PTE for copy window 1 KVA */ \ 55 pt_entry_t *pc_cmap2_ptep; /* PTE for copy window 2 KVA */ \ 56 vm_offset_t pc_cmap1_addr; /* KVA page for copy window 1 */ \ 57 vm_offset_t pc_cmap2_addr; /* KVA page for copy window 2 */ \ 58 vm_offset_t pc_qmap_addr; /* KVA page for temporary mappings */ \ 59 pt_entry_t *pc_qmap_ptep; /* PTE for temporary mapping KVA */ \ 60 char __pad[97] 61 #endif 62 63 #ifdef __mips_n64 64 #define PCPU_MD_FIELDS PCPU_MD_MIPS64_FIELDS 65 #else 66 #define PCPU_MD_FIELDS PCPU_MD_MIPS32_FIELDS 67 #endif 68 69 #ifdef _KERNEL 70 71 extern char pcpu_space[MAXCPU][PAGE_SIZE * 2]; 72 #define PCPU_ADDR(cpu) (struct pcpu *)(pcpu_space[(cpu)]) 73 74 extern struct pcpu *pcpup; 75 #define PCPUP pcpup 76 77 /* 78 * Since we use a wired TLB entry to map the same VA to a different 79 * physical page for each CPU, get_pcpu() must use the pc_self 80 * field to obtain a globally-unique pointer. 81 */ 82 #define get_pcpu() (PCPUP->pc_self) 83 84 #define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value)) 85 #define PCPU_GET(member) (PCPUP->pc_ ## member) 86 #define PCPU_INC(member) PCPU_ADD(member, 1) 87 #define PCPU_PTR(member) (&PCPUP->pc_ ## member) 88 #define PCPU_SET(member,value) (PCPUP->pc_ ## member = (value)) 89 #define PCPU_LAZY_INC(member) (++PCPUP->pc_ ## member) 90 91 #ifdef SMP 92 /* 93 * Instantiate the wired TLB entry at PCPU_TLB_ENTRY to map 'pcpu' at 'pcpup'. 94 */ 95 void mips_pcpu_tlb_init(struct pcpu *pcpu); 96 #endif 97 98 #endif /* _KERNEL */ 99 100 #endif /* !_MACHINE_PCPU_H_ */ 101