kernel/include/linux/ioport.h, branch linux-2.6.34.y

resources: add interfaces that return conflict information

2010-03-23T20:33:50Z

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

2010-03-15T00:08:36Z

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

2010-03-15T00:08:35Z

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

2010-03-15T00:08:34Z

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

2010-02-23T00:17:00Z

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

2010-02-23T00:16:57Z

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

2010-02-23T00:16:56Z

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()

2009-12-16T15:20:17Z

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

2009-09-23T14:39:41Z

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

2009-06-11T19:04:06Z

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