1 files changed, 117 insertions, 0 deletions

diff --git a/arch/mips/mipssim/sim_smtc.c b/arch/mips/mipssim/sim_smtc.c
new file mode 100644
index 00000000000..915063991f6
--- /dev/null
+++ b/arch/mips/mipssim/sim_smtc.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2005 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ */
+/*
+ * Simulator Platform-specific hooks for SMTC operation
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/cpumask.h>
+#include <linux/interrupt.h>
+#include <linux/smp.h>
+
+#include <linux/atomic.h>
+#include <asm/cpu.h>
+#include <asm/processor.h>
+#include <asm/smtc.h>
+#include <asm/system.h>
+#include <asm/mmu_context.h>
+#include <asm/smtc_ipi.h>
+
+/* VPE/SMP Prototype implements platform interfaces directly */
+
+/*
+ * Cause the specified action to be performed on a targeted "CPU"
+ */
+
+static void ssmtc_send_ipi_single(int cpu, unsigned int action)
+{
+        smtc_send_ipi(cpu, LINUX_SMP_IPI, action);
+        /* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */
+}
+
+static inline void ssmtc_send_ipi_mask(const struct cpumask *mask,
+                                       unsigned int action)
+{
+        unsigned int i;
+
+        for_each_cpu(i, mask)
+                ssmtc_send_ipi_single(i, action);
+}
+
+/*
+ * Post-config but pre-boot cleanup entry point
+ */
+static void __cpuinit ssmtc_init_secondary(void)
+{
+        smtc_init_secondary();
+}
+
+/*
+ * SMP initialization finalization entry point
+ */
+static void __cpuinit ssmtc_smp_finish(void)
+{
+        smtc_smp_finish();
+}
+
+/*
+ * Hook for after all CPUs are online
+ */
+static void ssmtc_cpus_done(void)
+{
+}
+
+/*
+ * Platform "CPU" startup hook
+ */
+static void __cpuinit ssmtc_boot_secondary(int cpu, struct task_struct *idle)
+{
+        smtc_boot_secondary(cpu, idle);
+}
+
+static void __init ssmtc_smp_setup(void)
+{
+        if (read_c0_config3() & (1 << 2))
+                mipsmt_build_cpu_map(0);
+}
+
+/*
+ * Platform SMP pre-initialization
+ */
+static void ssmtc_prepare_cpus(unsigned int max_cpus)
+{
+        /*
+         * As noted above, we can assume a single CPU for now
+         * but it may be multithreaded.
+         */
+
+        if (read_c0_config3() & (1 << 2)) {
+                mipsmt_prepare_cpus();
+        }
+}
+
+struct plat_smp_ops ssmtc_smp_ops = {
+        .send_ipi_single        = ssmtc_send_ipi_single,
+        .send_ipi_mask          = ssmtc_send_ipi_mask,
+        .init_secondary         = ssmtc_init_secondary,
+        .smp_finish             = ssmtc_smp_finish,
+        .cpus_done              = ssmtc_cpus_done,
+        .boot_secondary         = ssmtc_boot_secondary,
+        .smp_setup              = ssmtc_smp_setup,
+        .prepare_cpus           = ssmtc_prepare_cpus,
+};