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@xxxxxxxxxx/ Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> --- 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@xxxxxxxxxx>
