xref: /openbmc/linux/arch/parisc/include/asm/smp.h (revision e7f127b2)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __ASM_SMP_H
3 #define __ASM_SMP_H
4 
5 extern int init_per_cpu(int cpuid);
6 
7 #if defined(CONFIG_SMP)
8 
9 /* Page Zero Location PDC will look for the address to branch to when we poke
10 ** slave CPUs still in "Icache loop".
11 */
12 #define PDC_OS_BOOT_RENDEZVOUS     0x10
13 #define PDC_OS_BOOT_RENDEZVOUS_HI  0x28
14 
15 #ifndef ASSEMBLY
16 #include <linux/bitops.h>
17 #include <linux/threads.h>	/* for NR_CPUS */
18 #include <linux/cpumask.h>
19 typedef unsigned long address_t;
20 
21 
22 /*
23  *	Private routines/data
24  *
25  *	physical and logical are equivalent until we support CPU hotplug.
26  */
27 #define cpu_number_map(cpu)	(cpu)
28 #define cpu_logical_map(cpu)	(cpu)
29 
30 extern void smp_send_all_nop(void);
31 
32 extern void arch_send_call_function_single_ipi(int cpu);
33 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
34 
35 #define raw_smp_processor_id()		(current_thread_info()->cpu)
36 
37 #endif /* !ASSEMBLY */
38 
39 #else /* CONFIG_SMP */
40 
41 static inline void smp_send_all_nop(void) { return; }
42 
43 #endif
44 
45 #define NO_PROC_ID		0xFF		/* No processor magic marker */
46 #define ANY_PROC_ID		0xFF		/* Any processor magic marker */
47 static inline int __cpu_disable (void) {
48   return 0;
49 }
50 static inline void __cpu_die (unsigned int cpu) {
51   while(1)
52     ;
53 }
54 
55 #endif /*  __ASM_SMP_H */
56