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Diffstat (limited to 'sys/arm/include/pcpu.h')
| -rw-r--r-- | sys/arm/include/pcpu.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/sys/arm/include/pcpu.h b/sys/arm/include/pcpu.h new file mode 100644 index 000000000000..764ebdd987f0 --- /dev/null +++ b/sys/arm/include/pcpu.h @@ -0,0 +1,144 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> + * 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. + * + * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27 + */ + +#ifndef _MACHINE_PCPU_H_ +#define _MACHINE_PCPU_H_ + +#ifdef _KERNEL + +#include <sys/_lock.h> +#include <sys/_mutex.h> + +struct vmspace; + +#endif /* _KERNEL */ + +/* Branch predictor hardening method */ +#define PCPU_BP_HARDEN_KIND_NONE 0 +#define PCPU_BP_HARDEN_KIND_BPIALL 1 +#define PCPU_BP_HARDEN_KIND_ICIALLU 2 + +#define PCPU_MD_FIELDS \ + unsigned int pc_vfpsid; \ + unsigned int pc_vfpmvfr0; \ + unsigned int pc_vfpmvfr1; \ + struct pmap *pc_curpmap; \ + struct mtx pc_cmap_lock; \ + void *pc_cmap1_pte2p; \ + void *pc_cmap2_pte2p; \ + caddr_t pc_cmap1_addr; \ + caddr_t pc_cmap2_addr; \ + vm_offset_t pc_qmap_addr; \ + void *pc_qmap_pte2p; \ + unsigned int pc_dbreg[32]; \ + int pc_dbreg_cmd; \ + int pc_bp_harden_kind; \ + uint32_t pc_original_actlr; \ + uint64_t pc_clock; \ + uint32_t pc_mpidr; \ + char __pad[135] + +#ifdef _KERNEL + +#define PC_DBREG_CMD_NONE 0 +#define PC_DBREG_CMD_LOAD 1 + +struct pcb; +struct pcpu; + +extern struct pcpu *pcpup; + +#define CPU_MASK (0xf) + +#ifndef SMP +#define get_pcpu() (pcpup) +#else +#define get_pcpu() __extension__ ({ \ + int id; \ + __asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id)); \ + (pcpup + (id & CPU_MASK)); \ + }) +#endif + +static inline struct thread * +get_curthread(void) +{ + void *ret; + + __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret)); + return (ret); +} + +static inline void +set_curthread(struct thread *td) +{ + + __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td)); +} + +static inline void * +get_tls(void) +{ + void *tls; + + /* TPIDRURW contains the authoritative value. */ + __asm __volatile("mrc p15, 0, %0, c13, c0, 2" : "=r" (tls)); + return (tls); +} + +static inline void +set_tls(void *tls) +{ + + /* + * Update both TPIDRURW and TPIDRURO. TPIDRURW needs to be written + * first to ensure that a context switch between the two writes will + * still give the desired result of updating both. + */ + __asm __volatile( + "mcr p15, 0, %0, c13, c0, 2\n" + "mcr p15, 0, %0, c13, c0, 3\n" + : : "r" (tls)); +} + +#define curthread get_curthread() + + +#define PCPU_GET(member) (get_pcpu()->pc_ ## member) +#define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value)) +#define PCPU_PTR(member) (&get_pcpu()->pc_ ## member) +#define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value)) + +#define PCPU_GET_MPIDR(pc) ((pc)->pc_mpidr) + +void pcpu0_init(void); +#endif /* _KERNEL */ + +#endif /* !_MACHINE_PCPU_H_ */ |