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authorPaul Mundt <lethal@linux-sh.org>2008-07-29 08:09:44 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-07-29 08:09:44 +0900
commitf15cbe6f1a4b4d9df59142fc8e4abb973302cf44 (patch)
tree774d7b11abaaf33561ab8268bf51ddd9ceb79025 /arch/sh/include/asm/smp.h
parent25326277d8d1393d1c66240e6255aca780f9e3eb (diff)
sh: migrate to arch/sh/include/
This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac. Most of the moving about was done with Sam's directions at: http://marc.info/?l=linux-sh&m=121724823706062&w=2 with subsequent hacking and fixups entirely my fault. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/asm/smp.h')
-rw-r--r--arch/sh/include/asm/smp.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/sh/include/asm/smp.h b/arch/sh/include/asm/smp.h
new file mode 100644
index 000000000000..593343cd26ee
--- /dev/null
+++ b/arch/sh/include/asm/smp.h
@@ -0,0 +1,50 @@
+#ifndef __ASM_SH_SMP_H
+#define __ASM_SH_SMP_H
+
+#include <linux/bitops.h>
+#include <linux/cpumask.h>
+
+#ifdef CONFIG_SMP
+
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+#include <asm/current.h>
+
+#define raw_smp_processor_id() (current_thread_info()->cpu)
+#define hard_smp_processor_id() plat_smp_processor_id()
+
+/* Map from cpu id to sequential logical cpu number. */
+extern int __cpu_number_map[NR_CPUS];
+#define cpu_number_map(cpu) __cpu_number_map[cpu]
+
+/* The reverse map from sequential logical cpu number to cpu id. */
+extern int __cpu_logical_map[NR_CPUS];
+#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
+
+/* I've no idea what the real meaning of this is */
+#define PROC_CHANGE_PENALTY 20
+
+#define NO_PROC_ID (-1)
+
+#define SMP_MSG_FUNCTION 0
+#define SMP_MSG_RESCHEDULE 1
+#define SMP_MSG_FUNCTION_SINGLE 2
+#define SMP_MSG_NR 3
+
+void plat_smp_setup(void);
+void plat_prepare_cpus(unsigned int max_cpus);
+int plat_smp_processor_id(void);
+void plat_start_cpu(unsigned int cpu, unsigned long entry_point);
+void plat_send_ipi(unsigned int cpu, unsigned int message);
+int plat_register_ipi_handler(unsigned int message,
+ void (*handler)(void *), void *arg);
+extern void arch_send_call_function_single_ipi(int cpu);
+extern void arch_send_call_function_ipi(cpumask_t mask);
+
+#else
+
+#define hard_smp_processor_id() (0)
+
+#endif /* CONFIG_SMP */
+
+#endif /* __ASM_SH_SMP_H */