112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2003-2004 Juli Mallett. 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_HWFUNC_H_
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#define _MACHINE_HWFUNC_H_
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#include <sys/_cpuset.h>
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struct timecounter;
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/*
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* Hooks downward into platform functionality.
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*/
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void platform_reset(void);
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void platform_start(__register_t, __register_t, __register_t, __register_t);
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/* For clocks and ticks and such */
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void platform_initclocks(void);
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uint64_t platform_get_frequency(void);
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unsigned platform_get_timecount(struct timecounter *);
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/* For hardware specific CPU initialization */
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void platform_cpu_init(void);
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#ifdef SMP
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/*
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* Spin up the AP so that it starts executing MP bootstrap entry point: mpentry
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*
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* Returns 0 on sucess and non-zero on failure.
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*/
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int platform_start_ap(int processor_id);
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/*
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* Platform-specific initialization that needs to be done when an AP starts
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* running. This function is called from the MP bootstrap code in mpboot.S
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*/
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void platform_init_ap(int processor_id);
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/*
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* Return a plaform-specific interrrupt number that is used to deliver IPIs.
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*
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* This hardware interrupt is used to deliver IPIs exclusively and must
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* not be used for any other interrupt source.
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*/
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int platform_ipi_hardintr_num(void);
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int platform_ipi_softintr_num(void);
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#ifdef PLATFORM_INIT_SECONDARY
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/*
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* Set up IPIs for this CPU.
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*/
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void platform_init_secondary(int cpuid);
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#endif
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/*
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* Trigger a IPI interrupt on 'cpuid'.
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*/
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void platform_ipi_send(int cpuid);
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/*
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* Quiesce the IPI interrupt source on the current cpu.
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*/
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void platform_ipi_clear(void);
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/*
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* Return the processor id.
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*
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* Note that this function is called in early boot when stack is not available.
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*/
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extern int platform_processor_id(void);
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/*
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* Return the cpumask of available processors.
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*/
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extern void platform_cpu_mask(cpuset_t *mask);
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/*
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* Return the topology of processors on this platform
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*/
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struct cpu_group *platform_smp_topo(void);
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#endif /* SMP */
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#endif /* !_MACHINE_HWFUNC_H_ */
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