From 5698c50d9da4ab2f57d98c64ea97675dcaf2a608 Mon Sep 17 00:00:00 2001
From: James Hogan <james.hogan@imgtec.com>
Date: Tue, 9 Oct 2012 10:54:47 +0100
Subject: metag: Internal and external irqchips

Meta core internal interrupts (from HWSTATMETA and friends) are vectored
onto the TR1 core trigger for the current thread. This is demultiplexed
in irq-metag.c to individual Linux IRQs for each internal interrupt.

External SoC interrupts (from HWSTATEXT and friends) are vectored onto
the TR2 core trigger for the current thread. This is demultiplexed in
irq-metag-ext.c to individual Linux IRQs for each external SoC interrupt.
The external irqchip has devicetree bindings for configuring the number
of irq banks and the type of masking available.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Dom Cobley <popcornmix@gmail.com>
Cc: Simon Arlott <simon@fire.lp0.eu>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-doc@vger.kernel.org
---
 include/linux/irqchip/metag-ext.h | 33 +++++++++++++++++++++++++++++++++
 include/linux/irqchip/metag.h     | 24 ++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 include/linux/irqchip/metag-ext.h
 create mode 100644 include/linux/irqchip/metag.h

(limited to 'include/linux')

diff --git a/include/linux/irqchip/metag-ext.h b/include/linux/irqchip/metag-ext.h
new file mode 100644
index 000000000000..697af0fe7c5a
--- /dev/null
+++ b/include/linux/irqchip/metag-ext.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2012 Imagination Technologies
+ */
+
+#ifndef _LINUX_IRQCHIP_METAG_EXT_H_
+#define _LINUX_IRQCHIP_METAG_EXT_H_
+
+struct irq_data;
+struct platform_device;
+
+/* called from core irq code at init */
+int init_external_IRQ(void);
+
+/*
+ * called from SoC init_irq() callback to dynamically indicate the lack of
+ * HWMASKEXT registers.
+ */
+void meta_intc_no_mask(void);
+
+/*
+ * These allow SoCs to specialise the interrupt controller from their init_irq
+ * callbacks.
+ */
+
+extern struct irq_chip meta_intc_edge_chip;
+extern struct irq_chip meta_intc_level_chip;
+
+/* this should be called in the mask callback */
+void meta_intc_mask_irq_simple(struct irq_data *data);
+/* this should be called in the unmask callback */
+void meta_intc_unmask_irq_simple(struct irq_data *data);
+
+#endif /* _LINUX_IRQCHIP_METAG_EXT_H_ */
diff --git a/include/linux/irqchip/metag.h b/include/linux/irqchip/metag.h
new file mode 100644
index 000000000000..4ebdfb3101ab
--- /dev/null
+++ b/include/linux/irqchip/metag.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2011 Imagination Technologies
+ */
+
+#ifndef _LINUX_IRQCHIP_METAG_H_
+#define _LINUX_IRQCHIP_METAG_H_
+
+#include <linux/errno.h>
+
+#ifdef CONFIG_METAG_PERFCOUNTER_IRQS
+extern int init_internal_IRQ(void);
+extern int internal_irq_map(unsigned int hw);
+#else
+static inline int init_internal_IRQ(void)
+{
+	return 0;
+}
+static inline int internal_irq_map(unsigned int hw)
+{
+	return -EINVAL;
+}
+#endif
+
+#endif /* _LINUX_IRQCHIP_METAG_H_ */
-- 
cgit v1.2.3


From 9ca52ed979b6b45ae480a5fc56d593efb3bf16e8 Mon Sep 17 00:00:00 2001
From: James Hogan <james.hogan@imgtec.com>
Date: Tue, 16 Oct 2012 10:16:14 +0100
Subject: mm: define VM_GROWSUP for CONFIG_METAG

Commit cc2383ec06be093789469852e1fe96e1148e9a2c ("mm: introduce
arch-specific vma flag VM_ARCH_1") merged in v3.7-rc1.

The above commit combined several arch-specific vma flags into one, and
in the process it changed the VM_GROWSUP definition to depend on
specific architectures rather than CONFIG_STACK_GROWSUP. Therefore add
an ifdef for CONFIG_METAG to also set VM_GROWSUP.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michel Lespinasse <walken@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-mm@kvack.org
---
 include/linux/mm.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include/linux')

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 66e2f7c61e5c..44ac3dc363e7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -114,6 +114,8 @@ extern unsigned int kobjsize(const void *objp);
 # define VM_SAO		VM_ARCH_1	/* Strong Access Ordering (powerpc) */
 #elif defined(CONFIG_PARISC)
 # define VM_GROWSUP	VM_ARCH_1
+#elif defined(CONFIG_METAG)
+# define VM_GROWSUP	VM_ARCH_1
 #elif defined(CONFIG_IA64)
 # define VM_GROWSUP	VM_ARCH_1
 #elif !defined(CONFIG_MMU)
-- 
cgit v1.2.3