linux-toradex.git/include/linux/ioport.h, branch v2.6.34

resources: add interfaces that return conflict information

2010-03-23T20:33:50+00:00

request_resource() and insert_resource() only return success or failure,
which no information about what existing resource conflicted with the
proposed new reservation.  This patch adds request_resource_conflict()
and insert_resource_conflict(), which return the conflicting resource.

Callers may use this for better error messages or to adjust the new
resource and retry the request.

Signed-off-by: Bjorn Helgaas 
Signed-off-by: Jesse Barnes

resource: add window support

2010-03-15T00:08:36+00:00

Add support for resource windows.  This is for bridge resources, i.e.,
regions where a bridge forwards transactions from the primary to the
secondary side.

Signed-off-by: Bjorn Helgaas 
Signed-off-by: Len Brown

resource: add bus number support

2010-03-15T00:08:35+00:00

Add support for bus number resources.  This is for bridges with a range of
bus numbers behind them.

Signed-off-by: Bjorn Helgaas 
Signed-off-by: Len Brown

resource: expand IORESOURCE_TYPE_BITS to make room for bus resource type

2010-03-15T00:08:34+00:00

No functional change; this just makes room for another resource type.

Signed-off-by: Bjorn Helgaas 
Signed-off-by: Len Brown

resource: add release_child_resources

2010-02-23T00:17:00+00:00

Useful for freeing a portion of the resource tree, e.g. when trying to
reallocate resources more efficiently.

Signed-off-by: Yinghai Lu 
Acked-by: Linus Torvalds 
Signed-off-by: Jesse Barnes

resource/PCI: mark struct resource as const

2010-02-23T00:16:57+00:00

Now that we return the new resource start position, there is no
need to update "struct resource" inside the align function.
Therefore, mark the struct resource as const.

Cc: Bjorn Helgaas 
Cc: Yinghai Lu 
Signed-off-by: Dominik Brodowski 
Signed-off-by: Jesse Barnes

resource/PCI: align functions now return start of resource

2010-02-23T00:16:56+00:00

As suggested by Linus, align functions should return the start
of a resource, not void. An update of "res->start" is no longer
necessary.

Cc: Bjorn Helgaas 
Cc: Yinghai Lu 
Signed-off-by: Dominik Brodowski 
Signed-off-by: Jesse Barnes

resource: constify arg to resource_size() and resource_type()

2009-12-16T15:20:17+00:00

resource_size() doesn't change the resource it operates on, so the res
parameter can be marked const.  Same for resource_type().

Signed-off-by: Jean Delvare 
Reviewed-by: WANG Cong 
Cc: Greg KH 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

walk system ram range

2009-09-23T14:39:41+00:00

Originally, walk_memory_resource() was introduced to traverse all memory
of "System RAM" for detecting memory hotplug/unplug range.  For doing so,
flags of IORESOUCE_MEM|IORESOURCE_BUSY was used and this was enough for
memory hotplug.

But for using other purpose, /proc/kcore, this may includes some firmware
area marked as IORESOURCE_BUSY | IORESOUCE_MEM.  This patch makes the
check strict to find out busy "System RAM".

Note: PPC64 keeps their own walk_memory_resouce(), which walk through
ppc64's lmb informaton.  Because old kclist_add() is called per lmb, this
patch makes no difference in behavior, finally.

And this patch removes CONFIG_MEMORY_HOTPLUG check from this function.
Because pfn_valid() just show "there is memmap or not* and cannot be used
for "there is physical memory or not", this function is useful in generic
to scan physical memory range.

Signed-off-by: KAMEZAWA Hiroyuki 
Cc: Ralf Baechle 
Cc: Benjamin Herrenschmidt 
Cc: WANG Cong 
Cc: Américo Wang 
Cc: David Rientjes 
Cc: Roland Dreier 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

PCI/x86: don't assume prefetchable ranges are 64bit

2009-06-11T19:04:06+00:00

We should not assign 64bit ranges to PCI devices that only take 32bit
prefetchable addresses.

Try to set IORESOURCE_MEM_64 in 64bit resource of pci_device/pci_bridge
and make the bus resource only have that bit set when all devices under
it support 64bit prefetchable memory.  Use that flag to allocate
resources from that range.

Reported-by: Yannick 
Reviewed-by: Ivan Kokshaysky 
Signed-off-by: Yinghai Lu 
Signed-off-by: Jesse Barnes