e5acd89c78
This is only the minimum set of files needed to boot in qemu. As such it is missing a few things. The bus_dma code is currently only stub functions with a full implementation from the development tree to follow. The gic driver has been copied as the interrupt framework is different. It is expected the two drivers will be merged by the arm intrng project, however this will need to be imported into the tree and support for arm64 would need to be added. This includes code developed by myself, SemiHalf, Ed Maste, and Robin Randhawa from ARM. This has been funded by the FreeBSD Foundation, with early development by myself in my spare time with assistance from Robin. Differential Revision: https://reviews.freebsd.org/D2199 Reviewed by: emaste, imp Relnotes: yes Sponsored by: The FreeBSD Foundation
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*-
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* Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_COUNTER_H_
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#define _MACHINE_COUNTER_H_
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#include <sys/pcpu.h>
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#ifdef INVARIANTS
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#include <sys/proc.h>
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#endif
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#define counter_enter() critical_enter()
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#define counter_exit() critical_exit()
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#ifdef IN_SUBR_COUNTER_C
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static inline uint64_t
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counter_u64_read_one(uint64_t *p, int cpu)
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{
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return (*(uint64_t *)((char *)p + sizeof(struct pcpu) * cpu));
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}
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static inline uint64_t
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counter_u64_fetch_inline(uint64_t *p)
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{
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uint64_t r;
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int i;
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r = 0;
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for (i = 0; i < mp_ncpus; i++)
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r += counter_u64_read_one((uint64_t *)p, i);
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return (r);
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}
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/* XXXKIB might interrupt increment */
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static void
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counter_u64_zero_one_cpu(void *arg)
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{
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*((uint64_t *)((char *)arg + sizeof(struct pcpu) *
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PCPU_GET(cpuid))) = 0;
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}
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static inline void
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counter_u64_zero_inline(counter_u64_t c)
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{
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smp_rendezvous(smp_no_rendevous_barrier, counter_u64_zero_one_cpu,
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smp_no_rendevous_barrier, c);
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}
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#endif
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#define counter_u64_add_protected(c, inc) do { \
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CRITICAL_ASSERT(curthread); \
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*(uint64_t *)zpcpu_get(c) += (inc); \
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} while (0)
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static inline void
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counter_u64_add(counter_u64_t c, int64_t inc)
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{
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counter_enter();
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counter_u64_add_protected(c, inc);
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counter_exit();
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}
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#endif /* ! _MACHINE_COUNTER_H_ */
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