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b=H4sIAMLXCmYC/3XMQQ6CMBCF4auQWTumA7UGV9zDsKgwwERDm6lBD eHuVvYu/5e8b4XEKpzgUqygvEiSMOcoDwV0k59HRulzQ2lKayqyGDtBjgMqv4Le0Tt2pxuZyp9 ryKeoPMh7B69t7knSM+hn9xf6rX+phdCgo8qy66i3NTUPmb2GY9AR2m3bvrkeMDWtAAAA To: Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Rob Herring , Bjorn Helgaas , Kishon Vijay Abraham I , Thierry Reding , Jonathan Hunter , Jingoo Han Cc: linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, mhi@lists.linux.dev, linux-tegra@vger.kernel.org, Niklas Cassel , Manivannan Sadhasivam X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=2712; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=hRAyyHM9jBq8z5BMXGzXE9hXwapt0pAaABlLaIcw+Rc=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBmCtfTf7aNZNHSAcCrTEEK8X7g1dcGqfxMorvtY CkRgMCnuOiJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZgrX0wAKCRBVnxHm/pHO 9TbyB/4sZtMS4Y03NcUAGDf0XzMHg3hBKVNV3iuprXrozKDhO2hHn2E062aAslNK9JnpNRwscjf qnkGAt8bvR+f5dGh4F68jvBss3gYG/3IeDqzv/uqJGruc3MznxErSQHjYrKGlfpN/d4iijGITZ8 S7cBkXp2IlzF3MBZQQ/BwgasmNSdJx2naEOFydF6kz28QJJpADObCIL6bK7fvv/wXsWZqmS3Rs0 BstYijy0Q64WSSC7WGSD472hBbZCNK6A0iSvKMpYwFIlEoPTv4I6eott7cVLq9g+biR2r+VWv5o T4UKMmAWoY9e4VZgw3zf87CqqfYf2tW98xv1LTeqaZM/Zfn6 X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 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] and [2]. - Mani [1] https://lore.kernel.org/linux-pci/20240314-pci-dbi-rework-v10-0-14a45c5a938e@linaro.org/ [2] https://lore.kernel.org/linux-pci/20240320113157.322695-1-cassel@kernel.org/ Signed-off-by: Manivannan Sadhasivam Tested-by: Niklas Cassel --- Changes in v2: - Dropped the {start/stop}_link rework patches - Incorporated comments from Niklas - Collected review tags - Rebased on top of v6.9-rc1 and https://lore.kernel.org/linux-pci/20240320113157.322695-1-cassel@kernel.org/ - Link to v1: https://lore.kernel.org/r/20240314-pci-epf-rework-v1-0-6134e6c1d491@linaro.org --- Manivannan Sadhasivam (10): 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: Implement shutdown() callback to properly reset the endpoint devices drivers/pci/controller/dwc/pcie-designware-ep.c | 99 ++++++++++++++--------- drivers/pci/controller/dwc/pcie-designware.h | 5 ++ drivers/pci/controller/dwc/pcie-qcom-ep.c | 9 +-- drivers/pci/controller/dwc/pcie-qcom.c | 8 ++ drivers/pci/controller/dwc/pcie-tegra194.c | 1 + drivers/pci/endpoint/functions/pci-epf-mhi.c | 47 ++++++++--- drivers/pci/endpoint/functions/pci-epf-test.c | 103 +++++++++++++++++------- drivers/pci/endpoint/pci-epc-core.c | 53 ++++++++---- include/linux/pci-epc.h | 1 + include/linux/pci-epf.h | 27 +++++-- 10 files changed, 248 insertions(+), 105 deletions(-) --- base-commit: e6377605ca734126533a0f8e4de2b4bac881f076 change-id: 20240314-pci-epf-rework-a6e65b103a79 Best regards,