>From e5148874243f0b2b610cd6b077084bd782961d94 Mon Sep 17 00:00:00 2001
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<e5148874243f0b2b610cd6b077084bd782961d94.1291219118.git.anoop.pa@xxxxxxxxx>
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From: Anoop P A <anoop.pa@xxxxxxxxx>
Date: Wed, 1 Dec 2010 20:58:28 +0530
Subject: [RFC 1/3] VSMP support for msp71xx family of platforms.
Cc: anoop.pa@xxxxxxxxx
msp_smp.c initiliase IPI call and resched irq.
Signed-off-by: Anoop P A <anoop.pa@xxxxxxxxx>
---
arch/mips/pmc-sierra/msp71xx/Makefile | 3 +-
arch/mips/pmc-sierra/msp71xx/msp_smp.c | 75
++++++++++++++++++++++++++++++++
2 files changed, 77 insertions(+), 1 deletions(-)
create mode 100644 arch/mips/pmc-sierra/msp71xx/msp_smp.c
diff --git a/arch/mips/pmc-sierra/msp71xx/Makefile
b/arch/mips/pmc-sierra/msp71xx/Makefile
index e107f79..09627ae 100644
--- a/arch/mips/pmc-sierra/msp71xx/Makefile
+++ b/arch/mips/pmc-sierra/msp71xx/Makefile
@@ -6,7 +6,8 @@ obj-y += msp_prom.o msp_setup.o msp_irq.o \
obj-$(CONFIG_HAVE_GPIO_LIB) += gpio.o gpio_extended.o
obj-$(CONFIG_PMC_MSP7120_GW) += msp_hwbutton.o
obj-$(CONFIG_IRQ_MSP_SLP) += msp_irq_slp.o
-obj-$(CONFIG_IRQ_MSP_CIC) += msp_irq_cic.o
+obj-$(CONFIG_IRQ_MSP_CIC) += msp_irq_cic.o msp_irq_per.o
obj-$(CONFIG_PCI) += msp_pci.o
obj-$(CONFIG_MSPETH) += msp_eth.o
obj-$(CONFIG_USB_MSP71XX) += msp_usb.o
+obj-$(CONFIG_MIPS_MT_SMP) += msp_smp.o
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_smp.c
b/arch/mips/pmc-sierra/msp71xx/msp_smp.c
new file mode 100644
index 0000000..31a6c72
--- /dev/null
+++ b/arch/mips/pmc-sierra/msp71xx/msp_smp.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2000, 2001, 2004 MIPS Technologies, Inc.
+ * Copyright (C) 2001 Ralf Baechle
+ * Copyright (C) 2010 PMC-Sierra, Inc.
+ *
+ * VSMP support for MSP platforms . Derived from malta vsmp support.
+ *
+ * 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.
+ *
+ */
+#include <linux/smp.h>
+#include <linux/interrupt.h>
+
+#ifdef CONFIG_MIPS_MT_SMP
+#define MIPS_CPU_IPI_RESCHED_IRQ 0 /* SW int 0 for resched */
+#define MIPS_CPU_IPI_CALL_IRQ 1 /* SW int 1 for call */
+
+
+static void ipi_resched_dispatch(void)
+{
+ do_IRQ(MIPS_CPU_IPI_RESCHED_IRQ);
+}
+
+static void ipi_call_dispatch(void)
+{
+ do_IRQ(MIPS_CPU_IPI_CALL_IRQ);
+}
+
+static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
+{
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t ipi_call_interrupt(int irq, void *dev_id)
+{
+ smp_call_function_interrupt();
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction irq_resched = {
+ .handler = ipi_resched_interrupt,
+ .flags = IRQF_DISABLED|IRQF_PERCPU,
+ .name = "IPI_resched"
+};
+
+static struct irqaction irq_call = {
+ .handler = ipi_call_interrupt,
+ .flags = IRQF_DISABLED|IRQF_PERCPU,
+ .name = "IPI_call"
+};
+void __init arch_init_ipiirq(int irq, struct irqaction *action)
+{
+ setup_irq(irq, action);
+ set_irq_handler(irq, handle_percpu_irq);
+}
+void __init msp_vsmp_int_init(void)
+{
+ set_vi_handler (MIPS_CPU_IPI_RESCHED_IRQ, ipi_resched_dispatch);
+ set_vi_handler (MIPS_CPU_IPI_CALL_IRQ, ipi_call_dispatch);
+ arch_init_ipiirq(MIPS_CPU_IPI_RESCHED_IRQ, &irq_resched);
+ arch_init_ipiirq(MIPS_CPU_IPI_CALL_IRQ, &irq_call);
+}
+#endif /* CONFIG_MIPS_MT_SMP */
--
1.7.0.4
