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| author | David Daney <david.daney@cavium.com> | 2016-03-04 23:31:48 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-03-11 23:10:48 +0100 |
| commit | 7b6e7ba8e81a862e20d213d90aa5ba1e5a02aba6 (patch) | |
| tree | 56ba0d0986a399fc3f7e49ba7f90fb3511d8b695 /drivers/pci/host/Kconfig | |
| parent | PCI: thunder: Add PCIe host driver for ThunderX processors (diff) | |
| download | linux-7b6e7ba8e81a862e20d213d90aa5ba1e5a02aba6.tar.xz linux-7b6e7ba8e81a862e20d213d90aa5ba1e5a02aba6.zip | |
PCI: thunder: Add driver for ThunderX-pass{1,2} on-chip devices
The cavium,pci-thunder-ecam devices are exactly ECAM-based PCI root
complexes. These root complexes (loosely referred to as ECAM units in the
hardware manuals) are used to access the Thunder on-chip devices. They
are special in that all the BARs on devices behind these root complexes are
at fixed addresses.
Add a driver for these devices that synthesizes Enhanced Allocation (EA)
capability entries for each BAR.
Since this EA synthesis is needed for exactly two chip models, we can hard-
code some assumptions about the device topology and the layout of the
config space of specific DEVFNs in the driver.
[bhelgaas: changelog, whitespace]
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/pci/host/Kconfig')
| -rw-r--r-- | drivers/pci/host/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig index 184df22e4a69..ad833a03afbc 100644 --- a/drivers/pci/host/Kconfig +++ b/drivers/pci/host/Kconfig @@ -202,4 +202,11 @@ config PCI_HOST_THUNDER_PEM help Say Y here if you want PCIe support for CN88XX Cavium Thunder SoCs. +config PCI_HOST_THUNDER_ECAM + bool "Cavium Thunder ECAM controller to on-chip devices on pass-1.x silicon" + depends on OF && ARM64 + select PCI_HOST_COMMON + help + Say Y here if you want ECAM support for CN88XX-Pass-1.x Cavium Thunder SoCs. + endmenu |