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PCI: Add "pci=hpmmiosize" and "pci=hpmmioprefsize" parameters

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The existing "pci=hpmemsize=nn[KMG]" kernel parameter overrides the default
size of both the non-prefetchable and the prefetchable MMIO windows for
hotplug bridges.

Add "pci=hpmmiosize=nn[KMG]" to override the default size of only the
non-prefetchable MMIO window.

Add "pci=hpmmioprefsize=nn[KMG]" to override the default size of only the
prefetchable MMIO window.

Link: https://lore.kernel.org/r/SL2P216MB0187E4D0055791957B7E2660806B0@SL2P216MB0187.KORP216.PROD.OUTLOOK.COM
Signed-off-by: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Nicholas Johnson
2019-10-23 12:12:29 +00:00
committed by Bjorn Helgaas
parent c9c13ba428
commit d7b8a21752
4 changed files with 39 additions and 17 deletions
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3
drivers/pci/pci.h
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@@ -218,7 +218,8 @@ extern const struct device_type pci_dev_type;
extern const struct attribute_group *pci_bus_groups[];
extern unsigned long pci_hotplug_io_size;
extern unsigned long pci_hotplug_mem_size;
extern unsigned long pci_hotplug_mmio_size;
extern unsigned long pci_hotplug_mmio_pref_size;
extern unsigned long pci_hotplug_bus_size;
/**