linux-kernel - RE: [”PATCH” 0/5] Asynchronous linkdown recovery

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Message-ID: <MW2PR18MB22175AED0E4FCC2BF640AB8CC24F9@MW2PR18MB2217.namprd18.prod.outlook.com>
Date:   Tue, 13 Apr 2021 10:14:15 +0000
From:   Ben Peled <bpeled@...vell.com>
To:     Ben Peled <bpeled@...vell.com>,
        "thomas.petazzoni@...tlin.com" <thomas.petazzoni@...tlin.com>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "sebastian.hesselbarth@...il.com" <sebastian.hesselbarth@...il.com>,
        "gregory.clement@...tlin.com" <gregory.clement@...tlin.com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mw@...ihalf.com" <mw@...ihalf.com>,
        "jaz@...ihalf.com" <jaz@...ihalf.com>,
        Kostya Porotchkin <kostap@...vell.com>,
        Nadav Haklai <nadavh@...vell.com>,
        Stefan Chulski <stefanc@...vell.com>,
        Ofer Heifetz <oferh@...vell.com>
Subject: RE: [”PATCH” 0/5] Asynchronous linkdown recovery

Hi all,
Please ignore this patch list there is a small change missing. 

-----Original Message-----
From: bpeled@...vell.com <bpeled@...vell.com> 
Sent: Monday, April 12, 2021 6:31 PM
To: thomas.petazzoni@...tlin.com; lorenzo.pieralisi@....com; bhelgaas@...gle.com
Cc: linux-kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; devicetree@...r.kernel.org; linux-pci@...r.kernel.org; sebastian.hesselbarth@...il.com; gregory.clement@...tlin.com; andrew@...n.ch; robh+dt@...nel.org; mw@...ihalf.com; jaz@...ihalf.com; Kostya Porotchkin <kostap@...vell.com>; Nadav Haklai <nadavh@...vell.com>; Stefan Chulski <stefanc@...vell.com>; Ofer Heifetz <oferh@...vell.com>; Ben Peled <bpeled@...vell.com>
Subject: [”PATCH” 0/5] Asynchronous linkdown recovery

From: Ben Peled <bpeled@...vell.com>

The following patches implement the required procedure to handle and recover from asynchronous PCIE link down events on Armada SoCs.

The procedure is defined as the following:
1) Prevent new access to the PCI-E I/F by disabling the LTSSM
2) Flush all pending transaction/access to the PCI-E I/F
3) HW reset the PCIE end point device (based on board support)
4) Reset the PCIE MAC
5) Reinitialize the PCIE root complex and enable the LTSSM

The execution of this procedure is triggered by the PCIE RST_LINK_DOWN interrupt

Ben Peled (5):
  PCI: armada8k: Disable LTSSM on link down interrupts
  PCI: armada8k: Add link-down handle
  PCI: armada8k: add device reset to link-down handle
  dt-bindings: pci: add system controller and MAC reset bit to    
    Armada 7K/8K controller bindings
  arm64: dts: marvell: add pcie mac reset to pcie

 Documentation/devicetree/bindings/pci/pci-armada8k.txt |   6 +
 arch/arm64/boot/dts/marvell/armada-cp11x.dtsi          |   7 ++
 drivers/pci/controller/dwc/pcie-armada8k.c             | 126 ++++++++++++++++++++
 3 files changed, 139 insertions(+)

-- 
2.7.4