sh: ioremap() overhaul.
ioremap() overhaul. Add support for transparent PMB mapping, get rid of
p3_ioremap(), etc. Also drop ioremap() and iounmap() routines from the
machvec, as everyone can use the generic ioremap() API instead. For PCI
memory apertures and other special cases, use the pci_iomap() API, as
boards are already required to get the mapping right there.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index 1f5e23e..285dffd 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -2,7 +2,7 @@
* arch/sh/drivers/pci/pci.c
*
* Copyright (c) 2002 M. R. Brown <mrbrown@linux-sh.org>
- * Copyright (c) 2004, 2005 Paul Mundt <lethal@linux-sh.org>
+ * Copyright (c) 2004 - 2006 Paul Mundt <lethal@linux-sh.org>
*
* These functions are collected here to reduce duplication of common
* code amongst the many platform-specific PCI support code files.
@@ -172,10 +172,23 @@
return NULL;
if (maxlen && len > maxlen)
len = maxlen;
- if (flags & IORESOURCE_IO)
+
+ /*
+ * Presently the IORESOURCE_MEM case is a bit special, most
+ * SH7751 style PCI controllers have PCI memory at a fixed
+ * location in the address space where no remapping is desired
+ * (traditionally at 0xfd000000). Once this changes, the
+ * IORESOURCE_MEM case will have to switch to using ioremap() and
+ * more care will have to be taken to inhibit page table mapping
+ * for legacy cores.
+ *
+ * For now everything wraps to ioport_map(), since boards that
+ * have PCI will be able to check the address range properly on
+ * their own.
+ * -- PFM.
+ */
+ if (flags & (IORESOURCE_IO | IORESOURCE_MEM))
return ioport_map(start, len);
- if (flags & IORESOURCE_MEM)
- return ioremap(start, len);
return NULL;
}