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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_TOPOLOGY_H
#define _ASM_POWERPC_TOPOLOGY_H
#ifdef __KERNEL__
struct device;
struct device_node;
struct drmem_lmb;
#ifdef CONFIG_NUMA
/*
* If zone_reclaim_mode is enabled, a RECLAIM_DISTANCE of 10 will mean that
* all zones on all nodes will be eligible for zone_reclaim().
*/
#define RECLAIM_DISTANCE 10
#include <asm/mmzone.h>
#define cpumask_of_node(node) ((node) == -1 ? \
cpu_all_mask : \
node_to_cpumask_map[node])
struct pci_bus;
#ifdef CONFIG_PCI
extern int pcibus_to_node(struct pci_bus *bus);
#else
static inline int pcibus_to_node(struct pci_bus *bus)
{
return -1;
}
#endif
#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
cpu_all_mask : \
cpumask_of_node(pcibus_to_node(bus)))
int cpu_relative_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc);
extern int __node_distance(int, int);
#define node_distance(a, b) __node_distance(a, b)
extern void __init dump_numa_cpu_topology(void);
extern int sysfs_add_device_to_node(struct device *dev, int nid);
extern void sysfs_remove_device_from_node(struct device *dev, int nid);
static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node)
{
numa_cpu_lookup_table[cpu] = node;
}
static inline int early_cpu_to_node(int cpu)
{
int nid;
nid = numa_cpu_lookup_table[cpu];
/*
* Fall back to node 0 if nid is unset (it should be, except bugs).
* This allows callers to safely do NODE_DATA(early_cpu_to_node(cpu)).
*/
return (nid < 0) ? 0 : nid;
}
int of_drconf_to_nid_single(struct drmem_lmb *lmb);
void update_numa_distance(struct device_node *node);
extern void map_cpu_to_node(int cpu, int node);
#ifdef CONFIG_HOTPLUG_CPU
extern void unmap_cpu_from_node(unsigned long cpu);
#endif /* CONFIG_HOTPLUG_CPU */
#else
static inline int early_cpu_to_node(int cpu) { return 0; }
static inline void dump_numa_cpu_topology(void) {}
static inline int sysfs_add_device_to_node(struct device *dev, int nid)
{
return 0;
}
static inline void sysfs_remove_device_from_node(struct device *dev,
int nid)
{
}
static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) {}
static inline int cpu_relative_distance(__be32 *cpu1_assoc, __be32 *cpu2_assoc)
{
return 0;
}
static inline int of_drconf_to_nid_single(struct drmem_lmb *lmb)
{
return first_online_node;
}
static inline void update_numa_distance(struct device_node *node) {}
#ifdef CONFIG_SMP
static inline void map_cpu_to_node(int cpu, int node) {}
#ifdef CONFIG_HOTPLUG_CPU
static inline void unmap_cpu_from_node(unsigned long cpu) {}
#endif /* CONFIG_HOTPLUG_CPU */
#endif /* CONFIG_SMP */
#endif /* CONFIG_NUMA */
#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
void find_and_update_cpu_nid(int cpu);
extern int cpu_to_coregroup_id(int cpu);
#else
static inline void find_and_update_cpu_nid(int cpu) {}
static inline int cpu_to_coregroup_id(int cpu)
{
#ifdef CONFIG_SMP
return cpu_to_core_id(cpu);
#else
return 0;
#endif
}
#endif /* CONFIG_NUMA && CONFIG_PPC_SPLPAR */
#include <asm-generic/topology.h>
#ifdef CONFIG_SMP
#include <asm/cputable.h>
#ifdef CONFIG_PPC64
#include <asm/smp.h>
#define topology_physical_package_id(cpu) (cpu_to_chip_id(cpu))
#define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
#define topology_core_id(cpu) (cpu_to_core_id(cpu))
#endif
#endif
#ifdef CONFIG_HOTPLUG_SMT
#include <linux/cpu_smt.h>
#include <linux/cpumask.h>
#include <asm/cputhreads.h>
static inline bool topology_is_primary_thread(unsigned int cpu)
{
return cpu == cpu_first_thread_sibling(cpu);
}
static inline bool topology_smt_thread_allowed(unsigned int cpu)
{
return cpu_thread_in_core(cpu) < cpu_smt_num_threads;
}
#define topology_is_core_online topology_is_core_online
static inline bool topology_is_core_online(unsigned int cpu)
{
int i, first_cpu = cpu_first_thread_sibling(cpu);
for (i = first_cpu; i < first_cpu + threads_per_core; ++i) {
if (cpu_online(i))
return true;
}
return false;
}
#endif
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_TOPOLOGY_H */
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