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 * $FreeBSD$ 26 */ 27 28 #ifndef _MACHINE_HWFUNC_H_ 29 #define _MACHINE_HWFUNC_H_ 30 31 #include <sys/_cpuset.h> 32 33 struct timecounter; 34 35 /* 36 * Hooks downward into platform functionality. 37 */ 38 void platform_reset(void); 39 void platform_start(__register_t, __register_t, __register_t, __register_t); 40 41 /* For clocks and ticks and such */ 42 void platform_initclocks(void); 43 uint64_t platform_get_frequency(void); 44 unsigned platform_get_timecount(struct timecounter *); 45 46 /* For hardware specific CPU initialization */ 47 void platform_cpu_init(void); 48 49 #ifdef SMP 50 51 /* 52 * Spin up the AP so that it starts executing MP bootstrap entry point: mpentry 53 * 54 * Returns 0 on sucess and non-zero on failure. 55 */ 56 int platform_start_ap(int processor_id); 57 58 /* 59 * Platform-specific initialization that needs to be done when an AP starts 60 * running. This function is called from the MP bootstrap code in mpboot.S 61 */ 62 void platform_init_ap(int processor_id); 63 64 /* 65 * Return a plaform-specific interrrupt number that is used to deliver IPIs. 66 * 67 * This hardware interrupt is used to deliver IPIs exclusively and must 68 * not be used for any other interrupt source. 69 */ 70 int platform_ipi_hardintr_num(void); 71 int platform_ipi_softintr_num(void); 72 73 /* 74 * Trigger a IPI interrupt on 'cpuid'. 75 */ 76 void platform_ipi_send(int cpuid); 77 78 /* 79 * Quiesce the IPI interrupt source on the current cpu. 80 */ 81 void platform_ipi_clear(void); 82 83 /* 84 * Return the processor id. 85 * 86 * Note that this function is called in early boot when stack is not available. 87 */ 88 extern int platform_processor_id(void); 89 90 /* 91 * Return the cpumask of available processors. 92 */ 93 extern void platform_cpu_mask(cpuset_t *mask); 94 95 /* 96 * Return the topology of processors on this platform 97 */ 98 struct cpu_group *platform_smp_topo(void); 99 100 #endif /* SMP */ 101 102 #endif /* !_MACHINE_HWFUNC_H_ */ 103