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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/sparc/include/asm/smp_32.h | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/sparc/include/asm/smp_32.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/smp_32.h b/arch/sparc/include/asm/smp_32.h new file mode 100644 index 0000000000..2cf7971d7f --- /dev/null +++ b/arch/sparc/include/asm/smp_32.h @@ -0,0 +1,130 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* smp.h: Sparc specific SMP stuff. + * + * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) + */ + +#ifndef _SPARC_SMP_H +#define _SPARC_SMP_H + +#include <linux/threads.h> +#include <asm/head.h> + +#ifndef __ASSEMBLY__ + +#include <linux/cpumask.h> + +#endif /* __ASSEMBLY__ */ + +#ifdef CONFIG_SMP + +#ifndef __ASSEMBLY__ + +#include <asm/ptrace.h> +#include <asm/asi.h> +#include <linux/atomic.h> + +/* + * Private routines/data + */ + +extern unsigned char boot_cpu_id; +extern volatile unsigned long cpu_callin_map[NR_CPUS]; +extern cpumask_t smp_commenced_mask; +extern struct linux_prom_registers smp_penguin_ctable; + +void cpu_panic(void); + +/* + * General functions that each host system must provide. + */ + +void sun4m_init_smp(void); +void sun4d_init_smp(void); + +void smp_callin(void); +void smp_store_cpu_info(int); + +void smp_resched_interrupt(void); +void smp_call_function_single_interrupt(void); +void smp_call_function_interrupt(void); + +struct seq_file; +void smp_bogo(struct seq_file *); +void smp_info(struct seq_file *); + +struct sparc32_ipi_ops { + void (*cross_call)(void *func, cpumask_t mask, unsigned long arg1, + unsigned long arg2, unsigned long arg3, + unsigned long arg4); + void (*resched)(int cpu); + void (*single)(int cpu); + void (*mask_one)(int cpu); +}; +extern const struct sparc32_ipi_ops *sparc32_ipi_ops; + +static inline void xc0(void *func) +{ + sparc32_ipi_ops->cross_call(func, *cpu_online_mask, 0, 0, 0, 0); +} + +static inline void xc1(void *func, unsigned long arg1) +{ + sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, 0, 0, 0); +} +static inline void xc2(void *func, unsigned long arg1, unsigned long arg2) +{ + sparc32_ipi_ops->cross_call(func, *cpu_online_mask, arg1, arg2, 0, 0); +} + +static inline void xc3(void *func, unsigned long arg1, unsigned long arg2, + unsigned long arg3) +{ + sparc32_ipi_ops->cross_call(func, *cpu_online_mask, + arg1, arg2, arg3, 0); +} + +static inline void xc4(void *func, unsigned long arg1, unsigned long arg2, + unsigned long arg3, unsigned long arg4) +{ + sparc32_ipi_ops->cross_call(func, *cpu_online_mask, + arg1, arg2, arg3, arg4); +} + +void arch_send_call_function_single_ipi(int cpu); +void arch_send_call_function_ipi_mask(const struct cpumask *mask); + +static inline int cpu_logical_map(int cpu) +{ + return cpu; +} + +int hard_smp_processor_id(void); + +#define raw_smp_processor_id() (current_thread_info()->cpu) + +void smp_setup_cpu_possible_map(void); + +#endif /* !(__ASSEMBLY__) */ + +/* Sparc specific messages. */ +#define MSG_CROSS_CALL 0x0005 /* run func on cpus */ + +/* Empirical PROM processor mailbox constants. If the per-cpu mailbox + * contains something other than one of these then the ipi is from + * Linux's active_kernel_processor. This facility exists so that + * the boot monitor can capture all the other cpus when one catches + * a watchdog reset or the user enters the monitor using L1-A keys. + */ +#define MBOX_STOPCPU 0xFB +#define MBOX_IDLECPU 0xFC +#define MBOX_IDLECPU2 0xFD +#define MBOX_STOPCPU2 0xFE + +#else /* SMP */ + +#define hard_smp_processor_id() 0 +#define smp_setup_cpu_possible_map() do { } while (0) + +#endif /* !(SMP) */ +#endif /* !(_SPARC_SMP_H) */ |