Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 117 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..53b2cb8e5
--- /dev/null
+++ b/arch/mips/include/asm/smp-ops.h
@@ -0,0 +1,117 @@
+/*
+ * 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);
+#ifdef CONFIG_HOTPLUG_CPU
+	int (*cpu_disable)(void);
+	void (*cpu_die)(unsigned int cpu);
+#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;
+
+	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 */