[ARM] mm: provide helpers for accessing membanks

Provide helpers for getting physical addresses or pfns from the
meminfo array, and use them.  Move for_each_nodebank() to
asm/setup.h alongside the meminfo structure definition.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 7bbf105463f1..a65413ba121d 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -209,6 +209,17 @@ struct meminfo {
         struct membank bank[NR_BANKS];
 };
 
+#define for_each_nodebank(iter,mi,no)                   \
+        for (iter = 0; iter < mi->nr_banks; iter++)     \
+                if (mi->bank[iter].node == no)
+
+#define bank_pfn_start(bank)    __phys_to_pfn((bank)->start)
+#define bank_pfn_end(bank)      __phys_to_pfn((bank)->start + (bank)->size)
+#define bank_pfn_size(bank)     ((bank)->size >> PAGE_SHIFT)
+#define bank_phys_start(bank)   (bank)->start
+#define bank_phys_end(bank)     ((bank)->start + (bank)->size)
+#define bank_phys_size(bank)    (bank)->size
+
 /*
  * Early command line parameters.
  */