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133 lines
3.3 KiB
133 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* smp.h: Sparc specific SMP stuff. |
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* |
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* Copyright (C) 1996 David S. Miller ([email protected]) |
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*/ |
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#ifndef _SPARC_SMP_H |
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#define _SPARC_SMP_H |
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#include <linux/threads.h> |
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#include <asm/head.h> |
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#ifndef __ASSEMBLY__ |
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#include <linux/cpumask.h> |
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#endif /* __ASSEMBLY__ */ |
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#ifdef CONFIG_SMP |
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#ifndef __ASSEMBLY__ |
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#include <asm/ptrace.h> |
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#include <asm/asi.h> |
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#include <linux/atomic.h> |
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/* |
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* Private routines/data |
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*/ |
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extern unsigned char boot_cpu_id; |
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extern volatile unsigned long cpu_callin_map[NR_CPUS]; |
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extern cpumask_t smp_commenced_mask; |
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extern struct linux_prom_registers smp_penguin_ctable; |
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typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long, |
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unsigned long, unsigned long); |
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void cpu_panic(void); |
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/* |
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* General functions that each host system must provide. |
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*/ |
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void sun4m_init_smp(void); |
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void sun4d_init_smp(void); |
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void smp_callin(void); |
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void smp_store_cpu_info(int); |
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void smp_resched_interrupt(void); |
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void smp_call_function_single_interrupt(void); |
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void smp_call_function_interrupt(void); |
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struct seq_file; |
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void smp_bogo(struct seq_file *); |
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void smp_info(struct seq_file *); |
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struct sparc32_ipi_ops { |
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void (*cross_call)(smpfunc_t func, cpumask_t mask, unsigned long arg1, |
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unsigned long arg2, unsigned long arg3, |
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unsigned long arg4); |
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void (*resched)(int cpu); |
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void (*single)(int cpu); |
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void (*mask_one)(int cpu); |
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}; |
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extern const struct sparc32_ipi_ops *sparc32_ipi_ops; |
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static inline void xc0(smpfunc_t func) |
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{ |
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sparc32_ipi_ops->cross_call(func, *cpu_online_mask, 0, 0, 0, 0); |
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} |
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static inline void xc1(smpfunc_t func, unsigned long arg1) |
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{ |
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sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, 0, 0, 0); |
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} |
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static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2) |
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{ |
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sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, arg2, 0, 0); |
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} |
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static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2, |
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unsigned long arg3) |
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{ |
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sparc32_ipi_ops->cross_call(func, *cpu_online_mask, |
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arg1, arg2, arg3, 0); |
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} |
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static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2, |
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unsigned long arg3, unsigned long arg4) |
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{ |
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sparc32_ipi_ops->cross_call(func, *cpu_online_mask, |
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arg1, arg2, arg3, arg4); |
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} |
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void arch_send_call_function_single_ipi(int cpu); |
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void arch_send_call_function_ipi_mask(const struct cpumask *mask); |
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static inline int cpu_logical_map(int cpu) |
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{ |
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return cpu; |
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} |
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int hard_smp_processor_id(void); |
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#define raw_smp_processor_id() (current_thread_info()->cpu) |
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void smp_setup_cpu_possible_map(void); |
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#endif /* !(__ASSEMBLY__) */ |
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/* Sparc specific messages. */ |
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#define MSG_CROSS_CALL 0x0005 /* run func on cpus */ |
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/* Empirical PROM processor mailbox constants. If the per-cpu mailbox |
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* contains something other than one of these then the ipi is from |
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* Linux's active_kernel_processor. This facility exists so that |
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* the boot monitor can capture all the other cpus when one catches |
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* a watchdog reset or the user enters the monitor using L1-A keys. |
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*/ |
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#define MBOX_STOPCPU 0xFB |
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#define MBOX_IDLECPU 0xFC |
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#define MBOX_IDLECPU2 0xFD |
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#define MBOX_STOPCPU2 0xFE |
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#else /* SMP */ |
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#define hard_smp_processor_id() 0 |
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#define smp_setup_cpu_possible_map() do { } while (0) |
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#endif /* !(SMP) */ |
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#endif /* !(_SPARC_SMP_H) */
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