linux-kernel - [PATCH v4 0/2] Tango PCIe controller support

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Message-ID: <d054300a-5891-0a25-8726-2be6b1beff6c@sigmadesigns.com>
Date:   Thu, 20 Apr 2017 16:24:39 +0200
From:   Marc Gonzalez <marc_gonzalez@...madesigns.com>
To:     Bjorn Helgaas <helgaas@...nel.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Thomas Gleixner <tglx@...utronix.de>
CC:     Robin Murphy <robin.murphy@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Liviu Dudau <liviu.dudau@....com>,
        David Laight <david.laight@...lab.com>,
        linux-pci <linux-pci@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Thibaud Cornic <thibaud_cornic@...madesigns.com>,
        Phuong Nguyen <phuong_nguyen@...madesigns.com>,
        LKML <linux-kernel@...r.kernel.org>, Mason <slash.tmp@...e.fr>
Subject: [PATCH v4 0/2] Tango PCIe controller support

Hello,

This patch was split in two, to ease review of two orthogonal
parts (MSI controller and host bridge). NB: the patch is
just split in two where host bridge support starts.

Changes from v3 to v4

In the MSI part:
- Support 256 MSIs instead of only 32
- Define tango_{ack,mask,unmask} callbacks for the HW irq_chip
- Use a spinlock instead of a mutex
- Rename msi_mask register to msi_enable

In the host bridge part:
- Move several quirk-handling snippets out of the config space read function
- Check whether the PCIe link is up at probe-time

Other files
- Let the framework compute the bus-range from the config space width
- Be slightly more verbose in the Kconfig help


What has *not* changed, waiting from feedback from Bjorn:

- Pray that config and mem space accesses NEVER occur concurrently.
- Using of_device_is_compatible() vs of_device_get_match_data()


Marc Gonzalez (2):
  PCI: Add tango MSI controller support
  PCI: Add tango PCIe host bridge support

 Documentation/devicetree/bindings/pci/tango-pcie.txt |  32 ++++
 drivers/pci/host/Kconfig                             |   8 +
 drivers/pci/host/Makefile                            |   1 +
 drivers/pci/host/pcie-tango.c                        | 393 +++++++++++++++++++++++++++++++++++++++
 include/linux/pci_ids.h                              |   2 +
 5 files changed, 436 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/tango-pcie.txt
 create mode 100644 drivers/pci/host/pcie-tango.c

-- 
2.11.0