[ARM] 4182/1: iop3xx: fix the ioremap implementation to not remap static ranges
Implement a custom ioremap implementation for iop3xx. This saves
establishing new mappings. It also cleans up the PCI IO resource to be a
physical address rather than a virtual address as Russell pointed out on
the original iop13xx port.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/plat-iop/io.c b/arch/arm/plat-iop/io.c
new file mode 100644
index 0000000..f7eccec
--- /dev/null
+++ b/arch/arm/plat-iop/io.c
@@ -0,0 +1,58 @@
+/*
+ * iop3xx custom ioremap implementation
+ * Copyright (c) 2006, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+
+void * __iomem __iop3xx_ioremap(unsigned long cookie, size_t size,
+ unsigned long flags)
+{
+ void __iomem * retval;
+
+ switch (cookie) {
+ case IOP3XX_PCI_LOWER_IO_PA ... IOP3XX_PCI_UPPER_IO_PA:
+ retval = (void *) IOP3XX_PCI_IO_PHYS_TO_VIRT(cookie);
+ break;
+ case IOP3XX_PERIPHERAL_PHYS_BASE ... IOP3XX_PERIPHERAL_UPPER_PA:
+ retval = (void *) IOP3XX_PMMR_PHYS_TO_VIRT(cookie);
+ break;
+ default:
+ retval = __ioremap(cookie, size, flags);
+ }
+
+ return retval;
+}
+EXPORT_SYMBOL(__iop3xx_ioremap);
+
+void __iop3xx_iounmap(void __iomem *addr)
+{
+ extern void __iounmap(volatile void __iomem *addr);
+
+ switch ((u32) addr) {
+ case IOP3XX_PCI_LOWER_IO_VA ... IOP3XX_PCI_UPPER_IO_VA:
+ case IOP3XX_PERIPHERAL_VIRT_BASE ... IOP3XX_PERIPHERAL_UPPER_VA:
+ goto skip;
+ }
+ __iounmap(addr);
+
+skip:
+ return;
+}
+EXPORT_SYMBOL(__iop3xx_iounmap);