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[v2 PATCH 5/6] MIPS: APRP: Add support for Malta CMP platform.

To: linux-mips@linux-mips.org
Subject: [v2 PATCH 5/6] MIPS: APRP: Add support for Malta CMP platform.
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Thu, 17 Oct 2013 12:21:46 -0500
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>, ralf@linux-mips.org, "Steven J. Hill" <Steven.Hill@imgtec.com>
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From: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>

Malta with multi-core CM platforms can now use APRP functionality.

Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Reviewed-by: Qais Yousef <Qais.Yousef@imgtec.com>
---
 arch/mips/include/asm/amon.h     |    4 ++--
 arch/mips/mti-malta/malta-amon.c |   24 +++++++++++++++++++++---
 arch/mips/mti-malta/malta-int.c  |   12 ++++++++++++
 3 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/arch/mips/include/asm/amon.h b/arch/mips/include/asm/amon.h
index c3dc1a6..3bd6e76 100644
--- a/arch/mips/include/asm/amon.h
+++ b/arch/mips/include/asm/amon.h
@@ -3,5 +3,5 @@
  */
 
 int amon_cpu_avail(int);
-void amon_cpu_start(int, unsigned long, unsigned long,
-                   unsigned long, unsigned long);
+int amon_cpu_start(int, unsigned long, unsigned long,
+                  unsigned long, unsigned long);
diff --git a/arch/mips/mti-malta/malta-amon.c b/arch/mips/mti-malta/malta-amon.c
index 1e47844..917df6d 100644
--- a/arch/mips/mti-malta/malta-amon.c
+++ b/arch/mips/mti-malta/malta-amon.c
@@ -25,6 +25,7 @@
 #include <asm/addrspace.h>
 #include <asm/mips-boards/launch.h>
 #include <asm/mipsmtregs.h>
+#include <asm/vpe.h>
 
 int amon_cpu_avail(int cpu)
 {
@@ -48,7 +49,7 @@ int amon_cpu_avail(int cpu)
        return 1;
 }
 
-void amon_cpu_start(int cpu,
+int amon_cpu_start(int cpu,
                    unsigned long pc, unsigned long sp,
                    unsigned long gp, unsigned long a0)
 {
@@ -56,10 +57,10 @@ void amon_cpu_start(int cpu,
                (struct cpulaunch  *)CKSEG0ADDR(CPULAUNCH);
 
        if (!amon_cpu_avail(cpu))
-               return;
+               return -1;
        if (cpu == smp_processor_id()) {
                pr_debug("launch: I am cpu%d!\n", cpu);
-               return;
+               return -1;
        }
        launch += cpu;
 
@@ -78,4 +79,21 @@ void amon_cpu_start(int cpu,
                ;
        smp_rmb();      /* Target will be updating flags soon */
        pr_debug("launch: cpu%d gone!\n", cpu);
+
+       return 0;
+}
+
+#ifdef CONFIG_MIPS_VPE_LOADER
+int vpe_run(struct vpe *v)
+{
+       struct vpe_notifications *n;
+
+       if (amon_cpu_start(aprp_cpu_index(), v->__start, 0, 0, 0) < 0)
+               return -1;
+
+       list_for_each_entry(n, &v->notify, list)
+               n->start(VPE_MODULE_MINOR);
+
+       return 0;
 }
+#endif
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index be4a1092..ea9338d 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -2,6 +2,7 @@
  * Carsten Langgaard, carstenl@mips.com
  * Copyright (C) 2000, 2001, 2004 MIPS Technologies, Inc.
  * Copyright (C) 2001 Ralf Baechle
+ * Copyright (C) 2013 Imagination Technologies Ltd.
  *
  *  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
@@ -44,6 +45,7 @@
 #include <asm/gic.h>
 #include <asm/gcmpregs.h>
 #include <asm/setup.h>
+#include <asm/rtlx.h>
 
 int gcmp_present = -1;
 static unsigned long _msc01_biu_base;
@@ -126,6 +128,11 @@ static void malta_hw0_irqdispatch(void)
        }
 
        do_IRQ(MALTA_INT_BASE + irq);
+
+#ifdef MIPS_VPE_APSP_API
+       if (aprp_hook)
+               aprp_hook();
+#endif
 }
 
 static void malta_ipi_irqdispatch(void)
@@ -313,6 +320,11 @@ static void ipi_call_dispatch(void)
 
 static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
 {
+#ifdef MIPS_VPE_APSP_API
+       if (aprp_hook)
+               aprp_hook();
+#endif
+
        scheduler_ipi();
 
        return IRQ_HANDLED;
-- 
1.7.9.5


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