hwfunc.h revision 203697
1/*- 2 * Copyright (c) 2003-2004 Juli Mallett. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 * $FreeBSD: head/sys/mips/include/hwfunc.h 203697 2010-02-09 06:24:43Z neel $ 26 */ 27 28#ifndef _MACHINE_HWFUNC_H_ 29#define _MACHINE_HWFUNC_H_ 30 31struct trapframe; 32struct timecounter; 33/* 34 * Hooks downward into hardware functionality. 35 */ 36 37void platform_halt(void); 38void platform_intr(struct trapframe *); 39void platform_reset(void); 40void platform_start(__register_t, __register_t, __register_t, __register_t); 41 42/* For clocks and ticks and such */ 43void platform_initclocks(void); 44uint64_t platform_get_frequency(void); 45unsigned platform_get_timecount(struct timecounter *); 46 47/* For hardware specific CPU initialization */ 48void platform_cpu_init(void); 49void platform_secondary_init(void); 50 51#ifdef SMP 52 53/* 54 * Spin up the AP so that it starts executing MP bootstrap entry point: mpentry 55 * 56 * Returns 0 on sucess and non-zero on failure. 57 */ 58int platform_start_ap(int processor_id); 59 60/* 61 * Platform-specific initialization that needs to be done when an AP starts 62 * running. This function is called from the MP bootstrap code in mpboot.S 63 */ 64void platform_init_ap(int processor_id); 65 66/* 67 * Return a plaform-specific interrrupt number that is used to deliver IPIs. 68 * 69 * This hardware interrupt is used to deliver IPIs exclusively and must 70 * not be used for any other interrupt source. 71 */ 72int platform_ipi_intrnum(void); 73 74/* 75 * Trigger a IPI interrupt on 'cpuid'. 76 */ 77void platform_ipi_send(int cpuid); 78 79/* 80 * Quiesce the IPI interrupt source on the current cpu. 81 */ 82void platform_ipi_clear(void); 83 84/* 85 * Return the processor id. 86 * 87 * Note that this function is called in early boot when stack is not available. 88 */ 89extern int platform_processor_id(void); 90 91/* 92 * Return the number of processors available on this platform. 93 */ 94extern int platform_num_processors(void); 95 96#endif /* SMP */ 97#endif /* !_MACHINE_HWFUNC_H_ */ 98