1 files changed, 71 insertions, 0 deletions
diff --git a/arch/mips/include/asm/smtc.h b/arch/mips/include/asm/smtc.h
new file mode 100644
index 00000000000..ea60bf08dcb
--- /dev/null
+++ b/arch/mips/include/asm/smtc.h
@@ -0,0 +1,71 @@
+#ifndef _ASM_SMTC_MT_H
+#define _ASM_SMTC_MT_H
+
+/*
+ * Definitions for SMTC multitasking on MIPS MT cores
+ */
+
+#include <asm/mips_mt.h>
+#include <asm/smtc_ipi.h>
+
+/*
+ * System-wide SMTC status information
+ */
+
+extern unsigned int smtc_status;
+
+#define SMTC_TLB_SHARED	0x00000001
+#define SMTC_MTC_ACTIVE	0x00000002
+
+/*
+ * TLB/ASID Management information
+ */
+
+#define MAX_SMTC_TLBS 2
+#define MAX_SMTC_ASIDS 256
+#if NR_CPUS <= 8
+typedef char asiduse;
+#else
+#if NR_CPUS <= 16
+typedef short asiduse;
+#else
+typedef long asiduse;
+#endif
+#endif
+
+extern asiduse smtc_live_asid[MAX_SMTC_TLBS][MAX_SMTC_ASIDS];
+
+struct mm_struct;
+struct task_struct;
+
+void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu);
+void self_ipi(struct smtc_ipi *);
+void smtc_flush_tlb_asid(unsigned long asid);
+extern int smtc_build_cpu_map(int startslot);
+extern void smtc_prepare_cpus(int cpus);
+extern void smtc_smp_finish(void);
+extern void smtc_boot_secondary(int cpu, struct task_struct *t);
+extern void smtc_cpus_done(void);
+
+
+/*
+ * Sharing the TLB between multiple VPEs means that the
+ * "random" index selection function is not allowed to
+ * select the current value of the Index register. To
+ * avoid additional TLB pressure, the Index registers
+ * are "parked" with an non-Valid value.
+ */
+
+#define PARKED_INDEX	((unsigned int)0x80000000)
+
+/*
+ * Define low-level interrupt mask for IPIs, if necessary.
+ * By default, use SW interrupt 1, which requires no external
+ * hardware support, but which works only for single-core
+ * MIPS MT systems.
+ */
+#ifndef MIPS_CPU_IPI_IRQ
+#define MIPS_CPU_IPI_IRQ 1
+#endif
+
+#endif /*  _ASM_SMTC_MT_H */