1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_TOPOLOGY_H 3 #define _ASM_POWERPC_TOPOLOGY_H 4 #ifdef __KERNEL__ 5 6 7 struct device; 8 struct device_node; 9 struct drmem_lmb; 10 11 #ifdef CONFIG_NUMA 12 13 /* 14 * If zone_reclaim_mode is enabled, a RECLAIM_DISTANCE of 10 will mean that 15 * all zones on all nodes will be eligible for zone_reclaim(). 16 */ 17 #define RECLAIM_DISTANCE 10 18 19 #include <asm/mmzone.h> 20 21 #define cpumask_of_node(node) ((node) == -1 ? \ 22 cpu_all_mask : \ 23 node_to_cpumask_map[node]) 24 25 struct pci_bus; 26 #ifdef CONFIG_PCI 27 extern int pcibus_to_node(struct pci_bus *bus); 28 #else 29 static inline int pcibus_to_node(struct pci_bus *bus) 30 { 31 return -1; 32 } 33 #endif 34 35 #define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \ 36 cpu_all_mask : \ 37 cpumask_of_node(pcibus_to_node(bus))) 38 39 extern int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc); 40 extern int __node_distance(int, int); 41 #define node_distance(a, b) __node_distance(a, b) 42 43 extern void __init dump_numa_cpu_topology(void); 44 45 extern int sysfs_add_device_to_node(struct device *dev, int nid); 46 extern void sysfs_remove_device_from_node(struct device *dev, int nid); 47 48 static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) 49 { 50 numa_cpu_lookup_table[cpu] = node; 51 } 52 53 static inline int early_cpu_to_node(int cpu) 54 { 55 int nid; 56 57 nid = numa_cpu_lookup_table[cpu]; 58 59 /* 60 * Fall back to node 0 if nid is unset (it should be, except bugs). 61 * This allows callers to safely do NODE_DATA(early_cpu_to_node(cpu)). 62 */ 63 return (nid < 0) ? 0 : nid; 64 } 65 66 int of_drconf_to_nid_single(struct drmem_lmb *lmb); 67 68 #else 69 70 static inline int early_cpu_to_node(int cpu) { return 0; } 71 72 static inline void dump_numa_cpu_topology(void) {} 73 74 static inline int sysfs_add_device_to_node(struct device *dev, int nid) 75 { 76 return 0; 77 } 78 79 static inline void sysfs_remove_device_from_node(struct device *dev, 80 int nid) 81 { 82 } 83 84 static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) {} 85 86 static inline int cpu_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc) 87 { 88 return 0; 89 } 90 91 static inline int of_drconf_to_nid_single(struct drmem_lmb *lmb) 92 { 93 return first_online_node; 94 } 95 96 #endif /* CONFIG_NUMA */ 97 98 #if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR) 99 extern int find_and_online_cpu_nid(int cpu); 100 extern int cpu_to_coregroup_id(int cpu); 101 #else 102 static inline int find_and_online_cpu_nid(int cpu) 103 { 104 return 0; 105 } 106 107 static inline int cpu_to_coregroup_id(int cpu) 108 { 109 #ifdef CONFIG_SMP 110 return cpu_to_core_id(cpu); 111 #else 112 return 0; 113 #endif 114 } 115 116 #endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */ 117 118 #include <asm-generic/topology.h> 119 120 #ifdef CONFIG_SMP 121 #include <asm/cputable.h> 122 123 #ifdef CONFIG_PPC64 124 #include <asm/smp.h> 125 126 #define topology_physical_package_id(cpu) (cpu_to_chip_id(cpu)) 127 128 #define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) 129 #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) 130 #define topology_core_id(cpu) (cpu_to_core_id(cpu)) 131 132 #endif 133 #endif 134 135 #endif /* __KERNEL__ */ 136 #endif /* _ASM_POWERPC_TOPOLOGY_H */ 137