also add busn_res into struct pci_bus.
will use them to have bus number resource tree.
Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
---
include/linux/ioport.h | 1 +
include/linux/pci.h | 1 +
kernel/resource.c | 8 ++++++++
3 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index e885ba2..6fe9e19 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -136,6 +136,7 @@ struct resource {
/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
extern struct resource ioport_resource;
extern struct resource iomem_resource;
+extern struct resource iobusn_resource;
extern struct resource *request_resource_conflict(struct resource *root, struct resource *new);
extern int request_resource(struct resource *root, struct resource *new);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index f8caaab..94ad468 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -419,6 +419,7 @@ struct pci_bus {
struct list_head slots; /* list of slots on this bus */
struct resource *resource[PCI_BRIDGE_RESOURCE_NUM];
struct list_head resources; /* address space routed to this bus */
+ struct resource busn_res; /* track registered bus num range */
struct pci_ops *ops; /* configuration access functions */
void *sysdata; /* hook for sys-specific extension */
diff --git a/kernel/resource.c b/kernel/resource.c
index 7640b3a..53b42f0 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -38,6 +38,14 @@ struct resource iomem_resource = {
};
EXPORT_SYMBOL(iomem_resource);
+struct resource iobusn_resource = {
+ .name = "PCI busn",
+ .start = 0,
+ .end = 0xffffff,
+ .flags = IORESOURCE_BUS,
+};
+EXPORT_SYMBOL(iobusn_resource);
+
/* constraints to be met while allocating resources */
struct resource_constraint {
resource_size_t min, max, align;
--
1.7.7
--
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