[PATCH 1/1] MPC831x: fix PCI express probing

[Sergey Gerasimov]

For MPC831x the bus probing function also needs the fixup to assign
addresses to the PCI devices as it was for MPC85xx and MPC86xx.
The fixup of the bridge vendor and device ID should be done early in
PCI probing. Else the bridge is not detected as FIXUP_HEADER is called
too late.

Signed-off-by: Sergey Gerasimov <Sergey.Gerasimov at astrosoft-development.com>
---
 arch/powerpc/sysdev/fsl_pci.c | 67 +++++++++++++++++++------------------------
 1 file changed, 30 insertions(+), 37 deletions(-)

diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 682084d..b4f0873 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -64,6 +64,34 @@ static int __init fsl_pcie_check_link(struct pci_controller *hose)
 	return 0;
 }
 
+void fsl_pcibios_fixup_bus(struct pci_bus *bus)
+{
+	struct pci_controller *hose = (struct pci_controller *) bus->sysdata;
+	int i;
+
+
+	if ((bus->parent == hose->bus)
+		&& ((fsl_pcie_bus_fixup
+			&& pci_bus_find_capability(bus, 0, PCI_CAP_ID_EXP))
+				|| (hose->indirect_type
+					& PPC_INDIRECT_TYPE_NO_PCIE_LINK))) {
+		for (i = 0; i < 4; ++i) {
+			struct resource *res = bus->resource[i];
+			struct resource *par = bus->parent->resource[i];
+			if (res) {
+				res->start = 0;
+				res->end   = 0;
+				res->flags = 0;
+			}
+			if (res && par) {
+				res->start = par->start;
+				res->end   = par->end;
+				res->flags = par->flags;
+			}
+		}
+	}
+}
+
 #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
 
 #define MAX_PHYS_ADDR_BITS	40
@@ -384,42 +412,6 @@ static void __init setup_pci_cmd(struct pci_controller *hose)
 	}
 }
 
-void fsl_pcibios_fixup_bus(struct pci_bus *bus)
-{
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	int i, is_pcie = 0, no_link;
-
-	/* The root complex bridge comes up with bogus resources,
-	 * we copy the PHB ones in.
-	 *
-	 * With the current generic PCI code, the PHB bus no longer
-	 * has bus->resource[0..4] set, so things are a bit more
-	 * tricky.
-	 */
-
-	if (fsl_pcie_bus_fixup)
-		is_pcie = early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP);
-	no_link = !!(hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK);
-
-	if (bus->parent == hose->bus && (is_pcie || no_link)) {
-		for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; ++i) {
-			struct resource *res = bus->resource[i];
-			struct resource *par;
-
-			if (!res)
-				continue;
-			if (i == 0)
-				par = &hose->io_resource;
-			else if (i < 4)
-				par = &hose->mem_resources[i-1];
-			else par = NULL;
-
-			res->start = par ? par->start : 0;
-			res->end   = par ? par->end   : 0;
-			res->flags = par ? par->flags : 0;
-		}
-	}
-}
 
 int __init fsl_add_bridge(struct platform_device *pdev, int is_primary)
 {
@@ -515,7 +507,8 @@ no_bridge:
 }
 #endif /* CONFIG_FSL_SOC_BOOKE || CONFIG_PPC_86xx */
 
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID,
+	quirk_fsl_pcie_header);
 
 #if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_MPC512x)
 struct mpc83xx_pcie_priv {
-- 
1.7.11.7