linux.git/arch/sh/include/asm/io.h, branch v3.2

sh: Fix up legacy PTEA space attribute mapping.

2011-01-11T06:02:59+00:00

When p3_ioremap() was converted to ioremap_prot() there was some breakage
introduced where the 29-bit segmentation logic would trap the area range
and return an identity mapping without having allowed the area
specification to force mapping through page tables. This wires up a PCC
mask for pgprot verification to work out whether to short-circuit the
identity mapping on legacy parts, restoring the previous behaviour.

Reported-by: Nobuhiro Iwamatsu 
Cc: stable@kernel.org
Signed-off-by: Paul Mundt

sh: Kill off deprecated ctrl_in/out I/O routines.

2011-01-11T03:36:37+00:00

Now that all of the in-tree drivers have been converted to portable I/O
accessors, we can kill off the legacy ones with extreme prejudice.

Signed-off-by: Paul Mundt

sh: machvec IO death.

2010-11-01T13:49:04+00:00

This takes a bit of a sledgehammer to the machvec I/O routines. The
iomem case requires no special casing and so can just be dropped
outright. This only leaves the ioport casing for PCI and SuperIO
mangling. With the SuperIO case going through the standard ioport
mapping, it's possible to replace everything with generic routines.

With this done the standard I/O routines are tidied up and NO_IOPORT
now gets default-enabled for the vast majority of boards.

Signed-off-by: Paul Mundt

sh: support for platforms without PIO.

2010-06-02T07:31:42+00:00

This extends some of the existing special casing for HAS_IOPORT
platforms and gets it to the point where platforms can begin to
conditionally select it.

The major changes here are that the PIO routines themselves go away
completely, including all of the machvec port mapping wrappers. With this
in place it's possible for any non-machvec abusing platform to disable
PIO completely. At present this is left as an opt-in until the abusers
are the odd ones out instead of the majority.

Signed-off-by: Paul Mundt

sh: reworked dynamic PMB mapping.

2010-03-02T07:40:06+00:00

This implements a fairly significant overhaul of the dynamic PMB mapping
code. The primary change here is that the PMB gets its own VMA that
follows the uncached mapping and we attempt to be a bit more intelligent
with dynamic sizing, multi-entry mapping, and so forth.

Signed-off-by: Paul Mundt

sh: Provide uncached I/O helpers.

2010-02-18T04:23:30+00:00

There are lots of registers that can only be updated from the uncached
mapping, so we add some helpers for those cases in order to make it
easier to ensure that we only make the jump when it's absolutely
necessary.

Signed-off-by: Paul Mundt

sh: Fix up the ioremap_fixed() build for nommu.

2010-01-28T09:17:29+00:00

arch/sh/kernel/setup.c:455: error: implicit declaration of function 'ioremap_fixed_init'

Signed-off-by: Paul Mundt

sh: flag ctrl_in/outX as __deprecated.

2010-01-26T04:02:10+00:00

These routines are unsuitable for cross-platform use and no new code
should be using them, flag them as deprecated in order to give drivers
sufficient time to migrate over.

Signed-off-by: Paul Mundt

sh: Shut up noisy IOREMAP_FIXED=n build.

2010-01-19T17:45:05+00:00

The ioremap_fixed() stub neglected to provide a return value, resulting
in a fairly noisy build.

Signed-off-by: Paul Mundt

sh: Limit ioremap_prot() to 32bit pgprot parts.

2010-01-19T05:00:14+00:00

Presently ioremap_prot() uses an unsigned long to pass the pgprot value
around. This results in the upper half of the pgprot being chomped when
using 64-bit pgprots on a 32-bit ABI (X2TLB and SH-5).

As the only users of ioremap_prot() are presently legacy parts, this
doesn't cause too much of an issue. In the future when the interface is
converted to use pgprot_t directly this can be re-enabled for the other
parts, too.

Signed-off-by: Paul Mundt