1 /* $NetBSD: cpu_topology.h,v 1.3 2021/12/11 19:24:20 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 2020 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _ARM_CPU_TOPOLOGY_H_ 30 #define _ARM_CPU_TOPOLOGY_H_ 31 32 /* 33 * ARMv7 and ARMv8 compatible CPU topology support. 34 * 35 * arm_cpu_do_topology(cpuinfo) 36 * 37 * Call arm_cpu_do_topology() in cpu_attach(). It will update the topology 38 * view of relative speed. 39 * 40 * The CPU frontend can set the "capacity_dmips_mhz" property for this CPU, 41 * and arm_cpu_do_topology() will update the system view of this and other 42 * CPUs relative speeds 43 * 44 * arm_cpu_topology_set(cpuinfo, mpidr) 45 * 46 * arm_cpu_topology_set() is provided for locore and the boot CPU, 47 * and application CPUs. It updates data for the current CPU. 48 */ 49 50 #include <sys/param.h> 51 #include <sys/cpu.h> 52 53 void arm_cpu_do_topology(struct cpu_info * const); 54 void arm_cpu_topology_set(struct cpu_info * const, mpidr_t); 55 56 #endif /* _ARM_CPU_TOPOLOGY_H_ */ 57