1 /*- 2 * Copyright (c) 2021 The DragonFly Project. 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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 3. Neither the name of The DragonFly Project nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific, prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 28 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef _CPU_TOPOLOGY_H_ 33 #define _CPU_TOPOLOGY_H_ 34 35 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 36 37 #include <sys/param.h> 38 #include <sys/cpumask.h> 39 40 /* CPU TOPOLOGY DATA AND FUNCTIONS */ 41 struct cpu_node { 42 struct cpu_node * parent_node; 43 struct cpu_node * child_node[MAXCPU]; 44 uint32_t child_no; 45 uint32_t unused01; 46 cpumask_t members; 47 uint8_t type; 48 uint8_t compute_unit_id; /* AMD compute unit ID */ 49 uint8_t unused02; 50 uint8_t unused03; 51 long phys_mem; /* supplied from vm_numa_organize() */ 52 }; 53 typedef struct cpu_node cpu_node_t; 54 55 #define LEVEL_NO 4 56 57 /* Level type for CPU siblings */ 58 #define PACKAGE_LEVEL 1 59 #define CHIP_LEVEL 2 60 #define CORE_LEVEL 3 61 #define THREAD_LEVEL 4 62 63 #define CPUSET_FOREACH(cpu, mask) \ 64 for ((cpu) = 0; (cpu) < ncpus; (cpu)++) \ 65 if (CPUMASK_TESTBIT(mask, cpu)) 66 67 #endif 68 69 #if defined(_KERNEL) 70 71 extern int cpu_topology_levels_number; 72 extern int cpu_topology_ht_ids; 73 extern int cpu_topology_core_ids; 74 extern int cpu_topology_phys_ids; 75 extern cpu_node_t *root_cpu_node; 76 77 cpumask_t get_cpumask_from_level(int cpuid, uint8_t level_type); 78 cpu_node_t *get_cpu_node_by_cpuid(int cpuid); 79 const cpu_node_t *get_cpu_node_by_chipid(int chip_id); 80 long get_highest_node_memory(void); 81 int get_cpu_ht_id(int cpuid); 82 int get_cpu_core_id(int cpuid); 83 int get_cpu_phys_id(int cpuid); 84 85 #endif /* _KERNEL */ 86 #endif /* _CPU_TOPOLOGY_H_ */ 87