On Fri, Sep 26, 2014 at 02:08:23PM -0700, Tanmay Inamdar wrote: > This patch adds support for AppliedMicro X-Gene PCIe host controller. The > driver is tested on X-Gene platform with different gen1/2/3 PCIe endpoint > cards. > > X-Gene PCIe controller driver has depedency on the pcie arm64 arch support. > Liviu Dudau from ARM has sent a patch set for pcie arm64 arch support and > support for creating generic pcie bridge from device tree. Liviu's patches > are available here > https://lkml.org/lkml/2014/9/23/852 > > If someone wishes to test PCIe on X-Gene with this patch set, above mentioned > patches from Liviu must be applied before the patches in this patch set. Also > please use latest xgene u-boot firmware. I applied these on pci/host-xgene (based on pci/host-generic). I hope to merge these for v3.18. It'd be nice to have a device tree person like Arnd or Rob take a look at the arch/arm64/boot/dts/ bits. > changes since V9: > 1. Remove 'xgene_pcie_fixup_bridge' and hide the bridge BAR0 and BAR1 by > faking bridge's config space read and write to BAR0 and BAR1. > 2. Remove whitespace and fit in one line. > 3. Follow usual block comment. > 4. user '%pR' for printing out resource info > 5. Add device and vendor ID programming to make driver operable with older > firmware. > > changes since V8: > 1. Add 'dma-coherent' attribute in device node. > > changes since V7: > 1. Fix outbound region mapping for IO region. Thanks Liviu for the catch. > > changes since V6: > 1. Port driver to changed interface as per Liviu's v10 series. > > changes since V5: > 1. Port driver to changed interface of 'of_create_pci_host_bridge' > 2. Fix the prefetch bit setting > 3. Removed bunch of register programming which is already done by firmware > > changes since V4: > 1. fix section mismatch warnings > 2. fix the patch description > 3. fix indentation > 4. update read/write cfg functions by passing both addr and offset. > 5. use 'time_before' for timeout. > 6. remove unnecessary 'IS_ERR_OR_NULL'. Keep 'IS_ERR' for 'clk_get' > 7. remove BUG_ON for pci_ioremap_io. > > changes since V3: > 1. remove 'struct hw_pci' and supporting ops in hw_pci > 2. add code to create the host bridge from dts > 3. add code to scan the the host bridge > 4. modify outbound windows setup function to get resource information from > 'bridge->windows' > 5. add compatible string in pcie dts node with current X-Gene SOC name. > > changes since V2: > 1. redefined each PCI port in different PCI domain correctly. > 2. removed setup_lane and setup_link functions from driver. > 3. removed scan_bus wrapper and set_primary_bus hack. > 4. added pci_ioremap_io for io resources. > > changes since V1: > 1. added PCI domain support > 2. reading cpu and pci addresses from device tree to configure regions. > 3. got rid of unnecessary wrappers for readl and writel. > 4. got rid of endpoint configuration code. > 5. added 'dma-ranges' property support to read inbound region configuration. > 6. renamed host driver file to 'pci-xgene.c' from 'pcie-xgene.c' > 7. dropped 'clock-names' property from bindings > 8. added comments whereever requested. > > Tanmay Inamdar (4): > pci:host: APM X-Gene PCIe host controller driver > arm64: dts: APM X-Gene PCIe device tree nodes > dt-bindings: pci: xgene pcie device tree bindings > MAINTAINERS: entry for APM X-Gene PCIe host driver > > .../devicetree/bindings/pci/xgene-pci.txt | 57 ++ > MAINTAINERS | 8 + > arch/arm64/boot/dts/apm-mustang.dts | 8 + > arch/arm64/boot/dts/apm-storm.dtsi | 165 ++++++ > drivers/pci/host/Kconfig | 10 + > drivers/pci/host/Makefile | 1 + > drivers/pci/host/pci-xgene.c | 659 +++++++++++++++++++++ > 7 files changed, 908 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pci/xgene-pci.txt > create mode 100644 drivers/pci/host/pci-xgene.c > > -- > 1.9.1 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
