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ARM/PCI: Call pcie_bus_configure_settings() to set MPS

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Call pcie_bus_configure_settings() on ARM, like for other platforms.
pcie_bus_configure_settings() makes sure the MPS across the bus is uniform
and provides the ability to tune the MRSS and MPS to higher performance
values.  This is particularly important for embedded where there is no
firmware to program these PCIe settings for the OS.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Russell King <linux@arm.linux.org.uk>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
CC: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Murali Karicheri 2014-05-28 13:14:53 -04:00 committed by Bjorn Helgaas
parent c893d133ea
commit 8b5742ad15
1 changed files with 12 additions and 0 deletions
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12
arch/arm/kernel/bios32.c
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@ -545,6 +545,18 @@ void pci_common_init_dev(struct device *parent, struct hw_pci *hw)
*/
pci_bus_add_devices(bus);
}
list_for_each_entry(sys, &head, node) {
struct pci_bus *bus = sys->bus;
/* Configure PCI Express settings */
if (bus && !pci_has_flag(PCI_PROBE_ONLY)) {
struct pci_bus *child;
list_for_each_entry(child, &bus->children, node)
pcie_bus_configure_settings(child);
}
}
}
#ifndef CONFIG_PCI_HOST_ITE8152