commit ff0daca525dde796382b9ccd563f169df2571211
author Russell King <rmk@dyn-67.arm.linux.org.uk> Thu Jun 29 20:17:15 2006 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> Thu Jun 29 22:14:30 2006 +0100
tree acb3feb60cec39f316447f702a2277a7448cbad9
parent ba53201180e267bd1f0792e6c375ced7c100738e

[ARM] Add section support to ioremap

Allow section mappings to be setup using ioremap() and torn down
with iounmap().  This requires additional support in the MM
context switch to ensure that mappings are properly synchronised
when mapped in.

Based an original implementation by Deepak Saxena, reworked and
ARMv6 support added by rmk.

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

include/asm-arm/memory.h

diff --git a/include/asm-arm/memory.h b/include/asm-arm/memory.h
index 94f973b7..176a4fb 100644
--- a/include/asm-arm/memory.h
+++ b/include/asm-arm/memory.h
@@ -68,6 +68,11 @@
  */
 #define XIP_VIRT_ADDR(physaddr)  (MODULE_START + ((physaddr) & 0x000fffff))
 
+/*
+ * Allow 2MB-aligned ioremap pages
+ */
+#define IOREMAP_MAX_ORDER	21
+
 #else /* CONFIG_MMU */
 
 /*