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- /*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
- * Copyright (c) Peter Wemm <peter@netplex.com.au>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- */
- #ifndef _MACHINE_PCPU_H_
- #define _MACHINE_PCPU_H_
- #include <machine/cpufunc.h>
- #include <machine/slb.h>
- #include <machine/tlb.h>
- struct pmap;
- struct pvo_entry;
- #define CPUSAVE_LEN 9
- #define PCPU_MD_COMMON_FIELDS \
- int pc_inside_intr; \
- struct pmap *pc_curpmap; /* current pmap */ \
- struct thread *pc_fputhread; /* current fpu user */ \
- struct thread *pc_vecthread; /* current vec user */ \
- struct thread *pc_htmthread; /* current htm user */ \
- uintptr_t pc_hwref; \
- int pc_bsp; \
- volatile int pc_awake; \
- uint32_t pc_ipimask; \
- uint32_t pc_flags; /* cpu feature flags */ \
- register_t pc_tempsave[CPUSAVE_LEN]; \
- register_t pc_disisave[CPUSAVE_LEN]; \
- register_t pc_dbsave[CPUSAVE_LEN]; \
- void *pc_restore; \
- vm_offset_t pc_qmap_addr;
- #define PCPU_MD_AIM32_FIELDS \
- struct pvo_entry *qmap_pvo; \
- struct mtx qmap_lock; \
- char __pad[128];
- #define PCPU_MD_AIM64_FIELDS \
- struct slb slb[64]; \
- struct slb **userslb; \
- register_t slbsave[18]; \
- uint8_t slbstack[1024]; \
- struct pvo_entry *qmap_pvo; \
- struct mtx qmap_lock; \
- uint64_t opal_hmi_flags; \
- char __pad[1337];
- #ifdef __powerpc64__
- #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM64_FIELDS
- #else
- #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM32_FIELDS
- #endif
- /* CPU feature flags, can be used for cached flow control. */
- #define PC_FLAG_NOSRS 0x80000000
- #define BOOKE_CRITSAVE_LEN (CPUSAVE_LEN + 2)
- #define BOOKE_TLB_MAXNEST 4
- #define BOOKE_TLB_SAVELEN 16
- #define BOOKE_TLBSAVE_LEN (BOOKE_TLB_SAVELEN * BOOKE_TLB_MAXNEST)
- #ifdef __powerpc64__
- #define BOOKE_PCPU_PAD 901
- #else
- #define BOOKE_PCPU_PAD 365
- #endif
- #define PCPU_MD_BOOKE_FIELDS \
- register_t critsave[BOOKE_CRITSAVE_LEN]; \
- register_t mchksave[CPUSAVE_LEN]; \
- register_t tlbsave[BOOKE_TLBSAVE_LEN]; \
- register_t tlb_level; \
- uintptr_t *tlb_lock; \
- int tid_next; \
- char __pad[BOOKE_PCPU_PAD];
- /* Definitions for register offsets within the exception tmp save areas */
- #define CPUSAVE_R27 0 /* where r27 gets saved */
- #define CPUSAVE_R28 1 /* where r28 gets saved */
- #define CPUSAVE_R29 2 /* where r29 gets saved */
- #define CPUSAVE_R30 3 /* where r30 gets saved */
- #define CPUSAVE_R31 4 /* where r31 gets saved */
- #define CPUSAVE_AIM_DAR 5 /* where SPR_DAR gets saved */
- #define CPUSAVE_AIM_DSISR 6 /* where SPR_DSISR gets saved */
- #define CPUSAVE_BOOKE_DEAR 5 /* where SPR_DEAR gets saved */
- #define CPUSAVE_BOOKE_ESR 6 /* where SPR_ESR gets saved */
- #define CPUSAVE_SRR0 7 /* where SRR0 gets saved */
- #define CPUSAVE_SRR1 8 /* where SRR1 gets saved */
- #define BOOKE_CRITSAVE_SRR0 9 /* where real SRR0 gets saved (critical) */
- #define BOOKE_CRITSAVE_SRR1 10 /* where real SRR0 gets saved (critical) */
- /* Book-E TLBSAVE is more elaborate */
- #define TLBSAVE_BOOKE_LR 0
- #define TLBSAVE_BOOKE_CR 1
- #define TLBSAVE_BOOKE_SRR0 2
- #define TLBSAVE_BOOKE_SRR1 3
- #define TLBSAVE_BOOKE_R20 4
- #define TLBSAVE_BOOKE_R21 5
- #define TLBSAVE_BOOKE_R22 6
- #define TLBSAVE_BOOKE_R23 7
- #define TLBSAVE_BOOKE_R24 8
- #define TLBSAVE_BOOKE_R25 9
- #define TLBSAVE_BOOKE_R26 10
- #define TLBSAVE_BOOKE_R27 11
- #define TLBSAVE_BOOKE_R28 12
- #define TLBSAVE_BOOKE_R29 13
- #define TLBSAVE_BOOKE_R30 14
- #define TLBSAVE_BOOKE_R31 15
- #define PCPU_MD_FIELDS \
- PCPU_MD_COMMON_FIELDS \
- union { \
- struct { \
- PCPU_MD_AIM_FIELDS \
- } pc_aim; \
- struct { \
- PCPU_MD_BOOKE_FIELDS \
- } pc_booke; \
- }
- #ifdef _KERNEL
- #define pcpup (get_pcpu())
- static __inline __pure2 struct thread *
- __curthread(void)
- {
- struct thread *td;
- #ifdef __powerpc64__
- __asm __volatile("mr %0,13" : "=r"(td));
- #else
- __asm __volatile("mr %0,2" : "=r"(td));
- #endif
- return (td);
- }
- #define curthread (__curthread())
- #define PCPU_GET(member) (pcpup->pc_ ## member)
- /*
- * XXX The implementation of this operation should be made atomic
- * with respect to preemption.
- */
- #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value))
- #define PCPU_INC(member) PCPU_ADD(member, 1)
- #define PCPU_PTR(member) (&pcpup->pc_ ## member)
- #define PCPU_SET(member,value) (pcpup->pc_ ## member = (value))
- #endif /* _KERNEL */
- #endif /* !_MACHINE_PCPU_H_ */
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