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path: root/drivers/pci/controller/plda
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2024-07-29PCI: plda: Silence 'set affinity failed' warningMarek Vasut1-9/+2
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/[email protected] Signed-off-by: Marek Vasut <[email protected]> [bhelgaas: commit log] Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Manivannan Sadhasivam <[email protected]> Acked-by: Thomas Gleixner <[email protected]>
2024-05-28PCI: starfive: Add JH7110 PCIe controllerMinda Chen4-1/+571
Add StarFive JH7110 SoC PCIe controller platform driver code, JH7110 with PLDA host PCIe core. Link: https://lore.kernel.org/linux-pci/[email protected] Co-developed-by: Kevin Xie <[email protected]> Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Mason Huo <[email protected]>
2024-05-28PCI: plda: Pass pci_host_bridge to plda_pcie_setup_iomems()Minda Chen3-4/+4
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/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> [bhelgaas: commit log, reorder to where this is needed] Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
2024-05-28PCI: plda: Add host init/deinit and map bus functionsMinda Chen2-14/+139
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/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Mason Huo <[email protected]>
2024-05-28PCI: plda: Add event bitmap field to struct plda_pcie_rpMinda Chen3-2/+6
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/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]>
2024-05-28PCI: microchip: Move IRQ functions to pcie-plda-host.cMinda Chen3-467/+476
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/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Add event irqchip field to host port and add PLDA irqchipMinda Chen2-16/+84
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/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Add get_events() callback and PLDA get_event()Minda Chen2-1/+66
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/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Add INTx and MSI event num to struct plda_eventMinda Chen2-2/+6
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/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Add request_event_irq() callback functionMinda Chen2-4/+32
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/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Add num_events field to struct plda_pcie_rpMinda Chen2-3/+6
The number of events is different across platforms. In order to share interrupt processing code, add a variable that defines the number of events so that it can be set per-platform instead of hardcoding it. Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Rename interrupt related functionsMinda Chen1-52/+57
Rename mc_* to plda_* for IRQ functions and related IRQ domain ops data instances. MSI, INTx interrupt code and IRQ init code can all be re-used. Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Move PLDA functions to pcie-plda-host.cMinda Chen5-60/+84
Move plda_pcie_setup_window() and plda_pcie_setup_iomems() to pcie-plda-host.c so they can be shared by all PLDA-based drivers. Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Rename PLDA functions to be genericMinda Chen1-12/+12
Rename mc_pcie_setup_window() to plda_pcie_setup_window() and mc_pcie_setup_windows() to plda_pcie_setup_iomems() so they can be shared by all PLDA-based drivers. Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Move PLDA structures to plda-pcie.hMinda Chen2-20/+21
Move the PLDA generic data structures to a header file so they can be re-used by all PLDA-based drivers. [kwilczynski: commit log] Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Rename PLDA structures to be genericMinda Chen1-43/+53
Rename struct mc_msi to plda_msi and move most of struct mc_pcie to a new struct plda_pcie_rp so they can be shared by all PLDA-based drivers. The axi_base_addr field remains in struct mc_pcie since it's Microchip-specific data. The event interrupt code is still using struct mc_pcie because the event interrupt code can not be re-used. [kwilczynski: commit log] Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Add bridge_addr field to struct mc_pcieMinda Chen1-14/+9
Bridge address base is common PLDA field, add this to struct mc_pcie first. INTx and MSI interrupt code will be changed to common code, so get the bridge base address from port->bridge_addr instead of axi_base_addr. The axi_base_addr is Microchip-specific data. Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Move PLDA IP register macros to pcie-plda.hMinda Chen2-92/+124
Move PLDA PCIe host controller IP registers macros to pcie-plda.h, including bridge registers and PLDA IRQ event number. Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
2024-05-28PCI: microchip: Move pcie-microchip-host.c to PLDA directoryMinda Chen3-0/+1232
Since Microchip PolarFire PCIe host is PLDA XpressRich IP, move to PLDA directory. Prepare for refactoring the codes. [kwilczynski: commit log] Link: https://lore.kernel.org/linux-pci/[email protected] Signed-off-by: Minda Chen <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Conor Dooley <[email protected]>
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