tile: updates to pci root complex from community feedback

Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

1 files changed, 8 insertions, 19 deletions

diff --git a/arch/tile/include/asm/pci.h b/arch/tile/include/asm/pci.h
index 553b7ff018c..302cdf71cee 100644
--- a/arch/tile/include/asm/pci.h
+++ b/arch/tile/include/asm/pci.h
@@ -128,15 +128,10 @@ static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr) {}
 #define TILE_PCI_MEM_MAP_BASE_OFFSET    (1ULL << CHIP_PA_WIDTH())
 
 /*
- * End of the PCI memory resource.
+ * Start of the PCI memory resource, which starts at the end of the
+ * maximum system physical RAM address.
  */
-#define TILE_PCI_MEM_END        \
-                ((1ULL << CHIP_PA_WIDTH()) + TILE_PCI_BAR_WINDOW_TOP)
-
-/*
- * Start of the PCI memory resource.
- */
-#define TILE_PCI_MEM_START      (TILE_PCI_MEM_END - TILE_PCI_BAR_WINDOW_SIZE)
+#define TILE_PCI_MEM_START      (1ULL << CHIP_PA_WIDTH())
 
 /*
  * Structure of a PCI controller (host bridge) on Gx.
@@ -159,17 +154,19 @@ struct pci_controller {
         int index;              /* PCI domain number */
         struct pci_bus *root_bus;
 
+        /* PCI memory space resource for this controller. */
+        struct resource mem_space;
+        char mem_space_name[32];
+
         uint64_t mem_offset;    /* cpu->bus memory mapping offset. */
 
-        int last_busno;
+        int first_busno;
 
         struct pci_ops *ops;
 
         /* Table that maps the INTx numbers to Linux irq numbers. */
         int irq_intx_table[4];
 
-        struct resource mem_space;
-
         /* Address ranges that are routed to this controller/bridge. */
         struct resource mem_resources[3];
 };
@@ -179,14 +176,6 @@ extern gxio_trio_context_t trio_contexts[TILEGX_NUM_TRIO];
 
 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
 
-extern void
-pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
-                        struct resource *res);
-
-extern void
-pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
-                        struct pci_bus_region *region);
-
 /*
  * The PCI address space does not equal the physical memory address
  * space (we have an IOMMU). The IDE and SCSI device layers use this