PCI : ability to relocate assigned pci-resources

[pandora-kernel.git] / drivers / pci / setup-bus.c

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 4409cd0..1796c6f 100644 (file)
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -34,6 +34,7 @@ struct resource_list_x {
        resource_size_t start;
        resource_size_t end;
        resource_size_t add_size;
+       resource_size_t min_align;
        unsigned long flags;
 };
 
@@ -65,7 +66,7 @@ void pci_realloc(void)
  */
 static void add_to_list(struct resource_list_x *head,
                 struct pci_dev *dev, struct resource *res,
-                resource_size_t add_size)
+                resource_size_t add_size, resource_size_t min_align)
 {
        struct resource_list_x *list = head;
        struct resource_list_x *ln = list->next;
@@ -84,13 +85,16 @@ static void add_to_list(struct resource_list_x *head,
        tmp->end = res->end;
        tmp->flags = res->flags;
        tmp->add_size = add_size;
+       tmp->min_align = min_align;
        list->next = tmp;
 }
 
 static void add_to_failed_list(struct resource_list_x *head,
                                struct pci_dev *dev, struct resource *res)
 {
-       add_to_list(head, dev, res, 0);
+       add_to_list(head, dev, res,
+                       0 /* dont care */,
+                       0 /* dont care */);
 }
 
 static void __dev_sort_resources(struct pci_dev *dev,
@@ -159,13 +163,16 @@ static void adjust_resources_sorted(struct resource_list_x *add_head,
 
                idx = res - &list->dev->resource[0];
                add_size=list->add_size;
-               if (!resource_size(res) && add_size) {
-                        res->end = res->start + add_size - 1;
-                        if(pci_assign_resource(list->dev, idx))
+               if (!resource_size(res)) {
+                       res->end = res->start + add_size - 1;
+                       if(pci_assign_resource(list->dev, idx))
                                reset_resource(res);
-               } else if (add_size) {
-                       adjust_resource(res, res->start,
-                               resource_size(res) + add_size);
+               } else {
+                       resource_size_t align = list->min_align;
+                       res->flags |= list->flags & (IORESOURCE_STARTALIGN|IORESOURCE_SIZEALIGN);
+                       if (pci_reassign_resource(list->dev, idx, add_size, align))
+                               dev_printk(KERN_DEBUG, &list->dev->dev, "failed to add optional resources res=%pR\n",
+                                                       res);
                }
 out:
                tmp = list;
@@ -619,7 +626,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
        b_res->end = b_res->start + size0 - 1;
        b_res->flags |= IORESOURCE_STARTALIGN;
        if (size1 > size0 && add_head)
-               add_to_list(add_head, bus->self, b_res, size1-size0);
+               add_to_list(add_head, bus->self, b_res, size1-size0, 4096);
 }
 
 /**
@@ -722,7 +729,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
        b_res->end = size0 + min_align - 1;
        b_res->flags |= IORESOURCE_STARTALIGN | mem64_mask;
        if (size1 > size0 && add_head)
-               add_to_list(add_head, bus->self, b_res, size1-size0);
+               add_to_list(add_head, bus->self, b_res, size1-size0, min_align);
        return 1;
 }