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authorJonathan Chocron <jonnyc@amazon.com>2019-03-28 13:57:56 +0200
committerBjorn Helgaas <bhelgaas@google.com>2019-04-25 16:33:07 -0500
commit4166bfe53093b687a0b1b22e5d943e143b8089b2 (patch)
tree00bf187722c7810ff0bb113e929d6e8bdc9ee6e6 /MAINTAINERS
parent9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff)
PCI: al: Add Amazon Annapurna Labs PCIe host controller driver
Add driver for Amazon's Annapurna Labs PCIe host controller. The controller is based on DesignWare's IP. The controller doesn't support accessing the Root Port's config space via ECAM, so we obtain its base address via an AMZN0001 device. Furthermore, the DesignWare PCIe controller doesn't filter out config transactions sent to devices 1 and up on its bus, so they are filtered by the driver. All subordinate buses do support ECAM access. Implementing specific PCI config access functions involves: - Adding an init function to obtain the Root Port's base address from an AMZN0001 device. - Adding a new entry in the MCFG quirk array. [bhelgaas: Note that there is no Kconfig option for this driver because it is only intended for use with the generic ACPI host bridge driver. This driver is only needed because the DesignWare IP doesn't completely support ECAM access to the root bus.] Link: https://lore.kernel.org/lkml/1553774276-24675-1-git-send-email-jonnyc@amazon.com Co-developed-by: Vladimir Aerov <vaerov@amazon.com> Signed-off-by: Jonathan Chocron <jonnyc@amazon.com> Signed-off-by: Vladimir Aerov <vaerov@amazon.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
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diff --git a/MAINTAINERS b/MAINTAINERS
index e17ebf70b548..8b18d02a50cb 100644
--- a/MAINTAINERS
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@@ -12014,6 +12014,12 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git/
S: Supported
F: drivers/pci/controller/
+PCIE DRIVER FOR ANNAPURNA LABS
+M: Jonathan Chocron <jonnyc@amazon.com>
+L: linux-pci@vger.kernel.org
+S: Maintained
+F: drivers/pci/controller/dwc/pcie-al.c
+
PCIE DRIVER FOR AMLOGIC MESON
M: Yue Wang <yue.wang@Amlogic.com>
L: linux-pci@vger.kernel.org