sparc64: Enable aggressive setting of PCIe MPS settings

This patch connects SPARC PCIe into the generic PCIe framework enabling
MPS and MRRS to be set aggressively subject to the standard command line
flags. To enable put "pci=pcie_bus_perf" on command line.

Orabug: 21149334

Signed-off-by: Chris Hyser <chris.hyser@oracle.com>
(cherry picked from commit 5e5b08ede2c5b6cbf39e20f91097ca2435ea286e)
(cherry picked from commit 8b9a1855f68978d437605b0267ba448399303511)
Signed-off-by: Allen Pais <allen.pais@oracle.com>

diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 6ba977da17847b3b191f8f698eb5e7daeca2de97..553ea40b2913a67bd7ef6f7ab19c4d005814c0fb 100644 (file)
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -661,6 +661,7 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
        LIST_HEAD(resources);
        struct device_node *node = pbm->op->dev.of_node;
        struct pci_bus *bus;
+       struct pci_bus *child;
 
        printk("PCI: Scanning PBM %s\n", node->full_name);
 
@@ -690,6 +691,10 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
        pci_claim_bus_resources(bus);
        pci_register_legacy_regions(pbm);
        pci_bus_add_devices(bus);
+
+       list_for_each_entry(child, &bus->children, node)
+               pcie_bus_configure_settings(child);
+
        return bus;
 }