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sh: ioremap() overhaul.

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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>
This commit is contained in:
Paul Mundt
2006-09-27 15:16:42 +09:00
parent 26ff6c11ef
commit d7cdc9e8ac
15 changed files with 376 additions and 325 deletions
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21
arch/sh/drivers/pci/pci.c
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@@ -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 @@ void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
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;
}