@@ -860,6 +860,8 @@ resource_size_t __weak pcibios_iov_resource_alignment(struct pci_dev *dev,
*/
resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno)
{
+ if (pci_dev_bar_fixed(dev, dev->resource + resno))
+ return 1;
return pcibios_iov_resource_alignment(dev, resno);
}
@@ -558,6 +558,8 @@ static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
return pci_sriov_resource_alignment(dev, resno);
#endif
+ if (pci_dev_bar_fixed(dev, res))
+ return 1;
if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
return pci_cardbus_resource_alignment(res);
return resource_alignment(res);
@@ -882,6 +882,10 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
resource_size_t children_add_size = 0;
resource_size_t min_align, align;
+ struct resource *fixed_range = &bus->fixed_range[0];
+ resource_size_t fixed_size = pci_fixed_range_valid(fixed_range) ?
+ resource_size(fixed_range) : 0;
+
if (!b_res)
return;
@@ -917,6 +921,9 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
}
}
+ if (size1 < fixed_size)
+ size1 = fixed_size;
+
size0 = calculate_iosize(size, min_size, size1, 0, 0,
resource_size(b_res), min_align);
size1 = (!realloc_head || (realloc_head && !add_size && !children_add_size)) ? size0 :
@@ -998,6 +1005,14 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
resource_size_t children_add_size = 0;
resource_size_t children_add_align = 0;
resource_size_t add_align = 0;
+ int idx = pci_get_bridge_resource_idx(b_res);
+
+ struct resource *fixed_range = &bus->fixed_range[idx];
+ resource_size_t fixed_size = pci_fixed_range_valid(fixed_range) ?
+ resource_size(fixed_range) : 0;
+
+ if (min_size < fixed_size)
+ min_size = fixed_size;
if (!b_res)
return -ENOSPC;
@@ -1017,7 +1032,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
struct resource *r = &dev->resource[i];
resource_size_t r_size;
- if (r->parent || (r->flags & IORESOURCE_PCI_FIXED) ||
+ if (r->parent ||
!pci_dev_bar_enabled(dev, i) ||
((r->flags & mask) != type &&
(r->flags & mask) != type2 &&
The only difference between fixed and movable BARs is a size and offset preservation after they are released (the corresponding struct resource* is detached from a bridge window for a while during a bus rescan). So fixed BARs should not be skipped in pbus_size_{mem,io}(). Bridge window size calculation uses pci_{,sriov_}resource_alignment(), that are applicable only to not yet assigned BARs and don't make sense for fixed ones. Original alignment of a fixed BAR is lost after assignment, so return 1 in this case as a neutral value. A window should be additionally extended if it has distant fixed BARs on its edges: | <-- bridge window --> | | **fixed BAR** | | **fixed BAR** | Signed-off-by: Sergei Miroshnichenko <s.miroshnichenko@yadro.com> --- drivers/pci/iov.c | 2 ++ drivers/pci/pci.h | 2 ++ drivers/pci/setup-bus.c | 17 ++++++++++++++++- 3 files changed, 20 insertions(+), 1 deletion(-)