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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/mips/include/asm/smp-ops.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/include/asm/smp-ops.h')
-rw-r--r--arch/mips/include/asm/smp-ops.h124
1 files changed, 124 insertions, 0 deletions
diff --git a/arch/mips/include/asm/smp-ops.h b/arch/mips/include/asm/smp-ops.h
new file mode 100644
index 000000000..864aea803
--- /dev/null
+++ b/arch/mips/include/asm/smp-ops.h
@@ -0,0 +1,124 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
+ * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
+ * Copyright (C) 2000, 2001, 2002 Ralf Baechle
+ * Copyright (C) 2000, 2001 Broadcom Corporation
+ */
+#ifndef __ASM_SMP_OPS_H
+#define __ASM_SMP_OPS_H
+
+#include <linux/errno.h>
+
+#include <asm/mips-cps.h>
+
+#ifdef CONFIG_SMP
+
+#include <linux/cpumask.h>
+
+struct task_struct;
+
+struct plat_smp_ops {
+ void (*send_ipi_single)(int cpu, unsigned int action);
+ void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action);
+ void (*init_secondary)(void);
+ void (*smp_finish)(void);
+ int (*boot_secondary)(int cpu, struct task_struct *idle);
+ void (*smp_setup)(void);
+ void (*prepare_cpus)(unsigned int max_cpus);
+ void (*prepare_boot_cpu)(void);
+#ifdef CONFIG_HOTPLUG_CPU
+ int (*cpu_disable)(void);
+ void (*cpu_die)(unsigned int cpu);
+#endif
+#ifdef CONFIG_KEXEC
+ void (*kexec_nonboot_cpu)(void);
+#endif
+};
+
+extern void register_smp_ops(const struct plat_smp_ops *ops);
+
+static inline void plat_smp_setup(void)
+{
+ extern const struct plat_smp_ops *mp_ops; /* private */
+
+ mp_ops->smp_setup();
+}
+
+extern void mips_smp_send_ipi_single(int cpu, unsigned int action);
+extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
+ unsigned int action);
+
+#else /* !CONFIG_SMP */
+
+struct plat_smp_ops;
+
+static inline void plat_smp_setup(void)
+{
+ /* UP, nothing to do ... */
+}
+
+static inline void register_smp_ops(const struct plat_smp_ops *ops)
+{
+}
+
+#endif /* !CONFIG_SMP */
+
+static inline int register_up_smp_ops(void)
+{
+#ifdef CONFIG_SMP_UP
+ extern const struct plat_smp_ops up_smp_ops;
+
+ register_smp_ops(&up_smp_ops);
+
+ return 0;
+#else
+ return -ENODEV;
+#endif
+}
+
+static inline int register_cmp_smp_ops(void)
+{
+#ifdef CONFIG_MIPS_CMP
+ extern const struct plat_smp_ops cmp_smp_ops;
+
+ if (!mips_cm_present())
+ return -ENODEV;
+
+ register_smp_ops(&cmp_smp_ops);
+
+ return 0;
+#else
+ return -ENODEV;
+#endif
+}
+
+static inline int register_vsmp_smp_ops(void)
+{
+#ifdef CONFIG_MIPS_MT_SMP
+ extern const struct plat_smp_ops vsmp_smp_ops;
+
+ if (!cpu_has_mipsmt)
+ return -ENODEV;
+
+ register_smp_ops(&vsmp_smp_ops);
+
+ return 0;
+#else
+ return -ENODEV;
+#endif
+}
+
+#ifdef CONFIG_MIPS_CPS
+extern int register_cps_smp_ops(void);
+#else
+static inline int register_cps_smp_ops(void)
+{
+ return -ENODEV;
+}
+#endif
+
+#endif /* __ASM_SMP_OPS_H */