metag: TCM support

Add some TCM support

Signed-off-by: James Hogan <james.hogan@imgtec.com>

3 files changed, 85 insertions, 0 deletions

diff --git a/arch/metag/include/asm/mmzone.h b/arch/metag/include/asm/mmzone.h
new file mode 100644
index 000000000000..9c88a9c65f59
--- /dev/null
+++ b/arch/metag/include/asm/mmzone.h
@@ -0,0 +1,42 @@
+#ifndef __ASM_METAG_MMZONE_H
+#define __ASM_METAG_MMZONE_H
+
+#ifdef CONFIG_NEED_MULTIPLE_NODES
+#include <linux/numa.h>
+
+extern struct pglist_data *node_data[];
+#define NODE_DATA(nid)		(node_data[nid])
+
+static inline int pfn_to_nid(unsigned long pfn)
+{
+	int nid;
+
+	for (nid = 0; nid < MAX_NUMNODES; nid++)
+		if (pfn >= node_start_pfn(nid) && pfn <= node_end_pfn(nid))
+			break;
+
+	return nid;
+}
+
+static inline struct pglist_data *pfn_to_pgdat(unsigned long pfn)
+{
+	return NODE_DATA(pfn_to_nid(pfn));
+}
+
+/* arch/metag/mm/numa.c */
+void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end);
+#else
+static inline void
+setup_bootmem_node(int nid, unsigned long start, unsigned long end)
+{
+}
+#endif /* CONFIG_NEED_MULTIPLE_NODES */
+
+#ifdef CONFIG_NUMA
+/* SoC specific mem init */
+void __init soc_mem_setup(void);
+#else
+static inline void __init soc_mem_setup(void) {};
+#endif
+
+#endif /* __ASM_METAG_MMZONE_H */
diff --git a/arch/metag/include/asm/sparsemem.h b/arch/metag/include/asm/sparsemem.h
new file mode 100644
index 000000000000..03fe255d697a
--- /dev/null
+++ b/arch/metag/include/asm/sparsemem.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_METAG_SPARSEMEM_H
+#define __ASM_METAG_SPARSEMEM_H
+
+/*
+ * SECTION_SIZE_BITS		2^N: how big each section will be
+ * MAX_PHYSADDR_BITS		2^N: how much physical address space we have
+ * MAX_PHYSMEM_BITS		2^N: how much memory we can have in that space
+ */
+#define SECTION_SIZE_BITS	26
+#define MAX_PHYSADDR_BITS	32
+#define MAX_PHYSMEM_BITS	32
+
+#endif /* __ASM_METAG_SPARSEMEM_H */
diff --git a/arch/metag/include/asm/tcm.h b/arch/metag/include/asm/tcm.h
new file mode 100644
index 000000000000..7711c317b1d2
--- /dev/null
+++ b/arch/metag/include/asm/tcm.h
@@ -0,0 +1,30 @@
+#ifndef __ASM_TCM_H__
+#define __ASM_TCM_H__
+
+#include <linux/ioport.h>
+#include <linux/list.h>
+
+struct tcm_allocation {
+	struct list_head list;
+	unsigned int tag;
+	unsigned long addr;
+	unsigned long size;
+};
+
+/*
+ * TCM memory region descriptor.
+ */
+struct tcm_region {
+	unsigned int tag;
+	struct resource res;
+};
+
+#define TCM_INVALID_TAG	0xffffffff
+
+unsigned long tcm_alloc(unsigned int tag, size_t len);
+void tcm_free(unsigned int tag, unsigned long addr, size_t len);
+unsigned int tcm_lookup_tag(unsigned long p);
+
+int tcm_add_region(struct tcm_region *reg);
+
+#endif