linux-kernel - [PATCH 00/11] PCI: endpoint: Make host reboot handling more robust

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Date: Thu, 14 Mar 2024 20:53:39 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kw@...ux.com>, 
 Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>, Jingoo Han <jingoohan1@...il.com>, 
 Gustavo Pimentel <gustavo.pimentel@...opsys.com>
Cc: linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, mhi@...ts.linux.dev, 
 linux-tegra@...r.kernel.org, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
 Niklas Cassel <cassel@...nel.org>, Vidya Sagar <vidyas@...dia.com>
Subject: [PATCH 00/11] PCI: endpoint: Make host reboot handling more robust

Hello,

This is the follow up series of [1], to improve the handling of host reboot in
the endpoint subsystem. This involves refining the PERST# and Link Down event
handling in both the controller and function drivers.

Testing
=======

This series is tested on Qcom SM8450 based development board with both MHI_EPF
and EPF_TEST function drivers.

Dependency
==========

This series depends on [1].

- Mani

[1] https://lore.kernel.org/linux-pci/20240314-pci-dbi-rework-v10-0-14a45c5a938e@linaro.org/

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
Manivannan Sadhasivam (11):
      PCI: qcom-ep: Disable resources unconditionally during PERST# assert
      PCI: endpoint: Decouple EPC and PCIe bus specific events
      PCI: endpoint: Rename core_init() callback in 'struct pci_epc_event_ops' to init()
      PCI: epf-test: Refactor pci_epf_test_unbind() function
      PCI: epf-{mhi/test}: Move DMA initialization to EPC init callback
      PCI: endpoint: Introduce EPC 'deinit' event and notify the EPF drivers
      PCI: dwc: ep: Add a generic dw_pcie_ep_linkdown() API to handle Link Down event
      PCI: qcom-ep: Use the generic dw_pcie_ep_linkdown() API to handle Link Down event
      PCI: epf-test: Handle Link Down event
      PCI: qcom-ep: Rework {start/stop}_link() callbacks implementation
      PCI: tegra194: Rework {start/stop}_link() callbacks implementation

 drivers/pci/controller/dwc/pcie-designware-ep.c |  93 +++++++++++++-------
 drivers/pci/controller/dwc/pcie-designware.h    |   5 ++
 drivers/pci/controller/dwc/pcie-qcom-ep.c       |  30 +++----
 drivers/pci/controller/dwc/pcie-tegra194.c      |  25 +++---
 drivers/pci/endpoint/functions/pci-epf-mhi.c    |  47 ++++++++---
 drivers/pci/endpoint/functions/pci-epf-test.c   | 108 +++++++++++++++++-------
 drivers/pci/endpoint/pci-epc-core.c             |  53 +++++++++---
 include/linux/pci-epc.h                         |   1 +
 include/linux/pci-epf.h                         |  27 ++++--
 9 files changed, 265 insertions(+), 124 deletions(-)
---
base-commit: d65c75fc384ada26392a975c351689ec4e069c50
change-id: 20240314-pci-epf-rework-a6e65b103a79

Best regards,
-- 
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>