blaster4385/linux-IllusionX/drivers/pci/controller/plda, branch v6.12.1

PCI: plda: Silence 'set affinity failed' warning

2024-07-29T17:46:35Z

Use MSI_FLAG_NO_AFFINITY, which keeps .irq_set_affinity() unset and allows migrate_one_irq() to exit right away, without warnings like this: IRQ...: set affinity failed(-22) Remove the .irq_set_affinity() implementation that is no longer needed. Link: https://lore.kernel.org/r/20240723132958.41320-10-marek.vasut+renesas@mailbox.org Signed-off-by: Marek Vasut [bhelgaas: commit log] Signed-off-by: Bjorn Helgaas Reviewed-by: Manivannan Sadhasivam Acked-by: Thomas Gleixner

PCI: starfive: Add JH7110 PCIe controller

2024-05-28T16:15:30Z

Add StarFive JH7110 SoC PCIe controller platform driver code, JH7110 with PLDA host PCIe core. Link: https://lore.kernel.org/linux-pci/20240328091835.14797-22-minda.chen@starfivetech.com Co-developed-by: Kevin Xie Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Reviewed-by: Mason Huo

PCI: plda: Pass pci_host_bridge to plda_pcie_setup_iomems()

2024-05-28T16:15:29Z

plda_pcie_setup_iomems() needs the bridge->windows list from struct pci_host_bridge and is currently used only by pcie-microchip-host.c. This driver uses pci_host_common_probe(), which sets a pci_host_bridge as the drvdata, so plda_pcie_setup_iomems() used platform_get_drvdata() to find the pci_host_bridge. But we also want to use plda_pcie_setup_iomems() in the new pcie-starfive.c driver, which does not use pci_host_common_probe() and will have struct starfive_jh7110_pcie as its drvdata, so pass the pci_host_bridge directly to plda_pcie_setup_iomems() so it doesn't need platform_get_drvdata() to find it. Link: https://lore.kernel.org/linux-pci/20240328091835.14797-9-minda.chen@starfivetech.com Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński [bhelgaas: commit log, reorder to where this is needed] Signed-off-by: Bjorn Helgaas Reviewed-by: Conor Dooley

PCI: plda: Add host init/deinit and map bus functions

2024-05-28T16:15:29Z

Add PLDA host plda_pcie_host_init()/plda_pcie_host_deinit() and map bus function so vendors can use it to init PLDA PCIe host core. Link: https://lore.kernel.org/linux-pci/20240328091835.14797-19-minda.chen@starfivetech.com Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Reviewed-by: Mason Huo

PCI: plda: Add event bitmap field to struct plda_pcie_rp

2024-05-28T16:15:29Z

PLDA DMA interrupts are not all implemented, and the non-implemented interrupts should be masked. Add a bitmap field to mask the non-implemented interrupts. Link: https://lore.kernel.org/linux-pci/20240328091835.14797-18-minda.chen@starfivetech.com Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas

PCI: microchip: Move IRQ functions to pcie-plda-host.c

2024-05-28T16:15:29Z

Move IRQ related functions to common file pcie-plda-host.c The re-use code including MSI, INTx, event interrupts and IRQ init functions. Link: https://lore.kernel.org/linux-pci/20240328091835.14797-17-minda.chen@starfivetech.com Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Acked-by: Conor Dooley

PCI: microchip: Add event irqchip field to host port and add PLDA irqchip

2024-05-28T16:15:29Z

As the PLDA DT binding doc (Documentation/devicetree/bindings/pci/ plda,xpressrich3-axi-common.yaml) shows, PLDA PCIe contains an interrupt controller. Microchip PolarFire PCIe event IRQs include PLDA interrupts and PolarFire additional interrupts. The interrupt irqchip ops includes ack/mask/unmask interrupt ops, which will write correct registers. Microchip PolarFire PCIe additional interrupts require to write PolarFire SoC self-defined registers. So Microchip PCIe event irqchip ops can not be re-used. Microchip PolarFire PCIe additional interrupts (defined in drivers/pci/controller/plda/pcie-microchip-host.c): EVENT_PCIE_L2_EXIT EVENT_PCIE_HOTRST_EXIT EVENT_PCIE_DLUP_EXIT EVENT_SEC_TX_RAM_SEC_ERR EVENT_SEC_RX_RAM_SEC_ERR ... To support PLDA its own event IRQ process, implements PLDA irqchip ops and add event irqchip field to struct pcie_plda_rp. [kwilczynski: commit log] Link: https://lore.kernel.org/linux-pci/20240328091835.14797-16-minda.chen@starfivetech.com Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Acked-by: Conor Dooley

PCI: microchip: Add get_events() callback and PLDA get_event()

2024-05-28T16:15:29Z

As PLDA DT binding doc (Documentation/devicetree/bindings/pci/ plda,xpressrich3-axi-common.yaml) showed, PLDA PCIe contains an interrupt controller. PolarFire implements its own PCIe interrupts, additional to the regular PCIe interrupts, due to lack of an MSI controller, so the interrupt to event number mapping is different to the PLDA regular interrupts, necessitating a custom get_events() implementation. Microchip PolarFire PCIe additional interrupts (defined in drivers/pci/controller/plda/pcie-microchip-host.c): EVENT_PCIE_L2_EXIT EVENT_PCIE_HOTRST_EXIT EVENT_PCIE_DLUP_EXIT EVENT_SEC_TX_RAM_SEC_ERR EVENT_SEC_RX_RAM_SEC_ERR ... plda_get_events() adds interrupt register to PLDA event num mapping codes. All the PLDA interrupts can be seen in new added graph. [kwilczynski: commit log] Link: https://lore.kernel.org/linux-pci/20240328091835.14797-15-minda.chen@starfivetech.com Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Acked-by: Conor Dooley

PCI: microchip: Add INTx and MSI event num to struct plda_event

2024-05-28T16:15:29Z

The INTx and MSI interrupt event num is different across platforms, so add two event num fields in struct plda_event. Link: https://lore.kernel.org/linux-pci/20240328091835.14797-14-minda.chen@starfivetech.com Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Acked-by: Conor Dooley

PCI: microchip: Add request_event_irq() callback function

2024-05-28T16:15:29Z

As the PLDA DT binding doc (Documentation/devicetree/bindings/pci/ plda,xpressrich3-axi-common.yaml) shows, the PLDA IP contains an interrupt controller. Microchip PolarFire add some interrupts based on PLDA interrupt controller. The Microchip PolarFire PCIe additional interrupts (defined in drivers/pci/controller/plda/pcie-microchip-host.c): EVENT_PCIE_L2_EXIT EVENT_PCIE_HOTRST_EXIT EVENT_PCIE_DLUP_EXIT EVENT_SEC_TX_RAM_SEC_ERR EVENT_SEC_RX_RAM_SEC_ERR ... Both event_cause[] and mc_event_handler() contain additional interrupt symbol names; these can not be re-used. Add a new plda_event_handler() function, which implements PLDA interrupt defalt handler, and add a request_event_irq() callback function for Microchip PolarFire additional interrupts. [kwilczynski, bhelgaas: commit log] Link: https://lore.kernel.org/linux-pci/20240328091835.14797-13-minda.chen@starfivetech.com Signed-off-by: Minda Chen Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Acked-by: Conor Dooley