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| * | | Merge branch 'pci/host-dra7xx' into nextBjorn Helgaas2017-07-032-2/+3
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | * pci/host-dra7xx: PCI: dwc: dra7xx: Use RW1C for IRQSTATUS_MSI and IRQSTATUS_MAIN PCI: dwc: dra7xx: Depend on appropriate SoC or compile test
| | * | | PCI: dwc: dra7xx: Use RW1C for IRQSTATUS_MSI and IRQSTATUS_MAINArvind Yadav2017-07-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, we tried to clear interrupt requests by clearing bits in the PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI and PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN registers. But per the TRM, these fields are RW1C, so we must *set* bits to clear the interrupt bits. Fixes: 47ff3de911a7 ("PCI: dra7xx: Add TI DRA7xx PCIe driver") Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> [bhelgaas: changelog] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
| | * | | PCI: dwc: dra7xx: Depend on appropriate SoC or compile testPeter Robinson2017-07-021-0/+1
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PCI controller attached to a SoC isn't much use if the core SoC isn't enabled, unless of course it's compile testing, so add appropriate dependency. Signed-off-by: Peter Robinson <pbrobinson@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
| * | | Merge branch 'pci/host-designware' into nextBjorn Helgaas2017-07-0312-16/+19
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | * pci/host-designware: PCI: dwc: Constify dw_pcie_host_ops structures PCI: host: Mark PCIe/PCI (MSI) cascade ISR as IRQF_NO_THREAD
| | * | | PCI: dwc: Constify dw_pcie_host_ops structuresJisheng Zhang2017-07-0211-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dw_pcie_host_ops structures are never modified. Constify these structures such that these can be write-protected. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Jingoo Han <jingoohan1@gmail.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
| | * | | PCI: host: Mark PCIe/PCI (MSI) cascade ISR as IRQF_NO_THREADJisheng Zhang2017-07-023-3/+6
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Similar as commit 8ff0ef996ca0 ("PCI: host: Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREAD"), we should mark PCIe/PCI (MSI) IRQ cascade handlers in designware, qcom, and vmd as IRQF_NO_THREAD explicitly. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Keith Busch <keith.busch@intel.com> # vmd Acked-by: Jingoo Han <jingoohan1@gmail.com> # pcie-designware-plat.c
| * | | Merge branch 'pci/irq-fixups' into nextBjorn Helgaas2017-07-0319-235/+471
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pci/irq-fixups: arm64: PCI: Drop DT IRQ allocation from pcibios_alloc_irq() PCI: xilinx-nwl: Move to struct pci_host_bridge IRQ mapping functions PCI: rockchip: Move to struct pci_host_bridge IRQ mapping functions PCI: xgene: Move to struct pci_host_bridge IRQ mapping functions PCI: altera: Drop pci_fixup_irqs() PCI: versatile: Drop pci_fixup_irqs() PCI: generic: Drop pci_fixup_irqs() PCI: faraday: Drop pci_fixup_irqs() PCI: designware: Drop pci_fixup_irqs() PCI: iproc: Drop pci_fixup_irqs() PCI: rcar: Drop pci_fixup_irqs() PCI: xilinx: Drop pci_fixup_irqs() PCI: tegra: Drop pci_fixup_irqs() ARM/PCI: Remove pci_fixup_irqs() call for bios32 host controllers PCI: Add a call to pci_assign_irq() in pci_device_probe() OF/PCI: Update of_irq_parse_and_map_pci() comment PCI: Add pci_assign_irq() function and have pci_fixup_irqs() use it PCI: Add IRQ mapping function pointers to pci_host_bridge struct PCI: Build setup-irq.o on all arches PCI: Remove pci_scan_root_bus_msi() PCI: xilinx-nwl: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: rockchip: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: generic: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: xgene: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: xilinx: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: altera: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: versatile: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: iproc: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: rcar: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: aardvark: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: designware: Convert PCI scan API to pci_scan_root_bus_bridge() ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge() PCI: Make pci_register_host_bridge() PCI core internal PCI: Add pci_scan_root_bus_bridge() interface PCI: tegra: Fix host bridge memory leakage PCI: faraday: Fix host bridge memory leakage PCI: Add devm_pci_alloc_host_bridge() interface PCI: Add pci_free_host_bridge() interface PCI: Initialize bridge release function at bridge allocation PCI: faraday: Convert IRQ masking to raw PCI config accessors PCI: iproc: Convert link check to raw PCI config accessors PCI: xilinx-nwl: Remove nwl_pcie_enable_msi() unused bus parameter
| | * | PCI: xilinx-nwl: Move to struct pci_host_bridge IRQ mapping functionsLorenzo Pieralisi2017-07-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | struct pci_host_bridge gained hooks to map/swizzle IRQs, so that the IRQ mapping can be done automatically by PCI core code through the pci_assign_irq() function instead of resorting to arch-specific implementation callbacks to carry out the same task which force PCI host bridge drivers implementation to implement per-arch kludges to carry out a task that is inherently architecture agnostic. Add map/swizzle IRQs hooks to the xilinx-nwl PCI host driver to move the IRQ allocation into core code and stop relying on arch-specific callbacks. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
| | * | PCI: rockchip: Move to struct pci_host_bridge IRQ mapping functionsLorenzo Pieralisi2017-07-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | struct pci_host_bridge gained hooks to map/swizzle IRQs, so that the IRQ mapping can be done automatically by PCI core code through the pci_assign_irq() function instead of resorting to arch-specific implementation callbacks to carry out the same task which force PCI host bridge drivers implementation to implement per-arch kludges to carry out a task that is inherently architecture agnostic. Add map/swizzle IRQs hooks to the rockchip PCI host driver to move the IRQ allocation into core code and stop relying on arch-specific callbacks. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Wenrui Li <wenrui.li@rock-chips.com> Cc: Shawn Lin <shawn.lin@rock-chips.com>
| | * | PCI: xgene: Move to struct pci_host_bridge IRQ mapping functionsLorenzo Pieralisi2017-07-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | struct pci_host_bridge gained hooks to map/swizzle IRQs, so that the IRQ mapping can be done automatically by PCI core code through the pci_assign_irq() function instead of resorting to arch-specific implementation callbacks to carry out the same task which force PCI host bridge drivers implementation to implement per-arch kludges to carry out a task that is inherently architecture agnostic. Add map/swizzle IRQs hooks to the xgene PCI host driver to move the IRQ allocation into core code and stop relying on arch-specific callbacks. Tested-by: Khuong Dinh <kdinh@apm.com> # with e1000e Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Tanmay Inamdar <tinamdar@apm.com>
| | * | PCI: altera: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation. Drop pci_fixup_irqs() usage from PCI altera host bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Ley Foon Tan <lftan@altera.com>
| | * | PCI: versatile: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation. Drop pci_fixup_irqs() usage from PCI versatile host bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> [bhelgaas: folded in typo fix from Arnd Bergmann <arnd@arndb.de>: http://lkml.kernel.org/r/20170621215323.3921382-4-arnd@arndb.de] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Rob Herring <robh@kernel.org>
| | * | PCI: generic: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation. Drop pci_fixup_irqs() usage from PCI host-common bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Will Deacon <will.deacon@arm.com>
| | * | PCI: faraday: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation. Drop pci_fixup_irqs() usage from PCI ftpci100 host bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Linus Walleij <linus.walleij@linaro.org>
| | * | PCI: designware: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation. Drop pci_fixup_irqs() usage from PCI designware host bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Jingoo Han <jingoohan1@gmail.com> Cc: Joao Pinto <Joao.Pinto@synopsys.com>
| | * | PCI: iproc: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation. Drop pci_fixup_irqs() usage from PCI iproc host bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com>
| | * | PCI: rcar: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation. Drop pci_fixup_irqs() usage from PCI rcar host bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Simon Horman <horms@verge.net.au>
| | * | PCI: xilinx: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation. Drop pci_fixup_irqs() usage from PCI xilinx host bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Michal Simek <michal.simek@xilinx.com>
| | * | PCI: tegra: Drop pci_fixup_irqs()Lorenzo Pieralisi2017-07-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since, through struct pci_host_bridge.map/swizzle_irq hooks, IRQs are now allocated in the pci_assign_irq() callback automatically, PCI host bridge drivers can stop relying on pci_fixup_irqs() for IRQ allocation Drop pci_fixup_irqs() usage from PCI tegra host bridge driver. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Thierry Reding <thierry.reding@gmail.com>
| | * | PCI: Add a call to pci_assign_irq() in pci_device_probe()Matthew Minter2017-07-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pci_assign_irq() function allows assignment of an IRQ to devices during device enable time rather than only at boot. Therefore call it in the pci_device_probe() function during the enable device code path so this assignment can be performed. This patch will do nothing on arches which do not set the IRQ mapping function pointers and is therefore currently a nop, however as support for these function pointers is added to arch-specific code this will cause IRQ assignment to migrate to device enable time allowing the new code paths to be used. Signed-off-by: Matthew Minter <matt@masarand.com> [lorenzo.pieralisi@arm.com: moved pci_assign_irq() call site] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| | * | PCI: Add pci_assign_irq() function and have pci_fixup_irqs() use itMatthew Minter2017-07-021-10/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here we delete the static pdev_fixup_irq() function which is currently what pci_fixup_irqs() uses to actually assign the IRQs and replace it with the pci_assign_irq() function which changes the interface and uses the new function pointers stored in the host bridge structure. Eventually this will allow pci_fixup_irqs() to be removed entirely and the new deferred assignment code path will call pci_assign_irq() directly. However to ensure current users continue to work, a new implementation of pci_fixup_irqs() is introduced which simply wraps the functionality of pci_assign_irq(). Signed-off-by: Matthew Minter <matt@masarand.com> [lorenzo.pieralisi@arm.com: reworked comments/log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| | * | PCI: Build setup-irq.o on all archesMatthew Minter2017-07-021-15/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The functions included in setup-irq.o currently apply only to a selection of architectures which share common IRQ assignment code. However this code needs to be generalised for all arches to allow deferred IRQ assignment. So the first step is to build it on all architectures. Signed-off-by: Matthew Minter <matt@masarand.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| | * | PCI: Remove pci_scan_root_bus_msi()Lorenzo Pieralisi2017-07-021-22/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pci_scan_root_bus_bridge() function allows passing a parameterized struct pci_host_bridge and scanning the resulting PCI bus; since the struct msi_controller is part of the struct pci_host_bridge and the struct pci_host_bridge can now be passed to pci_scan_root_bus_bridge() explicitly, there is no need for a scan interface with a MSI controller parameter. With all PCI host controller drivers and platform code relying on pci_scan_root_bus_msi() converted over to pci_scan_root_bus_bridge() the pci_scan_root_bus_msi() becomes obsolete and can be removed. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| | * | PCI: xilinx-nwl: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-10/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI xilinx-nwl host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
| | * | PCI: rockchip: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI rockchip host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Wenrui Li <wenrui.li@rock-chips.com> Cc: Shawn Lin <shawn.lin@rock-chips.com>
| | * | PCI: generic: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-5/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI host-common code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Will Deacon <will.deacon@arm.com>
| | * | PCI: xgene: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-6/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI xgene host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Tested-by: Khuong Dinh <kdinh@apm.com> # with e1000e Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Tanmay Inamdar <tinamdar@apm.com>
| | * | PCI: xilinx: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-10/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI xilinx host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Michal Simek <michal.simek@xilinx.com>
| | * | PCI: altera: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI altera host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Ley Foon Tan <lftan@altera.com>
| | * | PCI: versatile: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-3/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI versatile host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> [bhelgaas: folded in fix from Arnd Bergmann <arnd@arndb.de>: http://lkml.kernel.org/r/20170621215323.3921382-3-arnd@arndb.de] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Rob Herring <robh@kernel.org>
| | * | PCI: iproc: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-023-22/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI iproc host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com>
| | * | PCI: rcar: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-14/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI rcar host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Simon Horman <horms@verge.net.au>
| | * | PCI: aardvark: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-6/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI aardvark host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
| | * | PCI: designware: Convert PCI scan API to pci_scan_root_bus_bridge()Lorenzo Pieralisi2017-07-021-14/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI designware host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Jingoo Han <jingoohan1@gmail.com> Cc: Joao Pinto <Joao.Pinto@synopsys.com>
| | * | PCI: Make pci_register_host_bridge() PCI core internalLorenzo Pieralisi2017-06-283-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the introduction of pci_scan_root_bus_bridge() there is no need to export pci_register_host_bridge() to other kernel subsystems other than the PCI compilation unit that needs it. Make pci_register_host_bridge() static to its compilation unit and convert the existing drivers usage over to pci_scan_root_bus_bridge(). Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Arnd Bergmann <arnd@arndb.de>
| | * | PCI: Add pci_scan_root_bus_bridge() interfaceLorenzo Pieralisi2017-06-281-0/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current pci_scan_root_bus() interface is made up of two main code paths: - pci_create_root_bus() - pci_scan_child_bus() pci_create_root_bus() is a wrapper function that allows to create a struct pci_host_bridge structure, initialize it with the passed parameters and register it with the kernel. As the struct pci_host_bridge require additional struct members, pci_create_root_bus() parameters list has grown in time, making it unwieldy to add further parameters to it in case the struct pci_host_bridge gains more members fields to augment its functionality. Since PCI core code provides functions to allocate struct pci_host_bridge, instead of forcing the pci_create_root_bus() interface to add new parameters to cater for new struct pci_host_bridge functionality, it is more suitable to add an interface in PCI core code to scan a PCI bus straight from a struct pci_host_bridge created and customized by each specific PCI host controller driver. Add a pci_scan_root_bus_bridge() function to allow PCI host controller drivers to create and initialize struct pci_host_bridge and scan the resulting bus. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Arnd Bergmann <arnd@arndb.de>
| | * | PCI: tegra: Fix host bridge memory leakageLorenzo Pieralisi2017-06-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When probing the PCI host controller driver, if an error occurs, the probe function code does not free memory allocated for the struct pci_host_bridge resulting in memory leakage. Move the struct pci_host_bridge allocation over to the respective devm interface to fix the issue. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Arnd Bergmann <arnd@arndb.de>
| | * | PCI: faraday: Fix host bridge memory leakageLorenzo Pieralisi2017-06-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When probing the PCI host controller driver, if an error occurs, the probe function code does not free memory allocated for the struct pci_host_bridge resulting in memory leakage. Move the struct pci_host_bridge allocation over to the respective devm interface to fix the issue. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de>
| | * | PCI: Add devm_pci_alloc_host_bridge() interfaceLorenzo Pieralisi2017-06-281-2/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Struct pci_host_bridge can be allocated by PCI host bridge drivers which usually allocate and map memory through devm managed interfaces. Add a devm version for the pci_alloc_host_bridge() interface to simplify PCI host controller driver porting and simplify the driver failure paths. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Arnd Bergmann <arnd@arndb.de>
| | * | PCI: Add pci_free_host_bridge() interfaceLorenzo Pieralisi2017-06-281-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a52d1443bba1 ("PCI: Export host bridge registration interface") exported the pci_alloc_host_bridge() interface so that PCI host controllers drivers can make use of it. Introduce pci_alloc_host_bridge() kernel counterpart to free the host bridge data structures, pci_free_host_bridge(), export it and update kernel functions releasing host bridge objects allocated memory to make use of it. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Arnd Bergmann <arnd@arndb.de>
| | * | PCI: Initialize bridge release function at bridge allocationLorenzo Pieralisi2017-06-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The introduction of pci_register_host_bridge() kernel interface allows PCI host controller drivers to create the struct pci_host_bridge object, initialize it and register it with the kernel so that its corresponding PCI bus can be scanned and its devices probed. The host bridge device release function pci_release_host_bridge_dev() is a static function common for all struct pci_host_bridge allocated objects, so in its current form cannot be used by PCI host bridge controllers drivers to initialize the allocated struct pci_host_bridge, which leaves struct pci_host_bridge devices release function uninitialized. Since pci_release_host_bridge_dev() is a function common to all PCI host bridge objects, initialize it in pci_alloc_host_bridge() (ie common host bridge allocation interface) so that all struct pci_host_bridge objects have their release function initialized by default at allocation time, removing the need for exporting the common pci_release_host_bridge_dev() function to other compilation units. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Arnd Bergmann <arnd@arndb.de>
| | * | PCI: faraday: Convert IRQ masking to raw PCI config accessorsLorenzo Pieralisi2017-06-281-33/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current ftpci100 driver host bridge controller driver requires struct pci_bus to be created in order to mask and clear IRQs using standard PCI bus config accessors. This struct pci_bus dependency is fictitious and burdens the driver with unneeded constraints (eg to use separate APIs to create and scan the root bus). Add PCI raw config space accessors to PCIe ftpci100 driver and remove the fictitious struct pci_bus dependency. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> [bhelgaas: folded in raw PCI read accessor from http://lkml.kernel.org/r/20170621162651.25315-1-linus.walleij@linaro.org The clock piece of the above posting goes with the separate "Add clock handling" patch.] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
| | * | PCI: iproc: Convert link check to raw PCI config accessorsLorenzo Pieralisi2017-06-281-20/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current iproc driver host bridge controller driver requires struct pci_bus to be created in order to carry out PCI link checks with standard PCI config space accessors. This struct pci_bus dependency is fictitious and burdens the driver with unneeded constraints (eg to use separate APIs to create and scan the root bus). Add PCI raw config space accessors to the iproc driver and remove the fictitious struct pci_bus dependency. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com>
| | * | PCI: xilinx-nwl: Remove nwl_pcie_enable_msi() unused bus parameterLorenzo Pieralisi2017-06-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nwl_pcie_enable_msi() second parameter (ie "bus") is unused and creates a fake dependency on the struct pci_bus that need not exist. Remove it. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
| * | | Merge branch 'pci/virtualization' into nextBjorn Helgaas2017-07-036-102/+160
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pci/virtualization: PCI: Remove __pci_dev_reset() and pci_dev_reset() PCI: Split ->reset_notify() method into ->reset_prepare() and ->reset_done() PCI: Protect pci_error_handlers->reset_notify() usage with device_lock() PCI: Protect pci_driver->sriov_configure() usage with device_lock() PCI: Mark Intel XXV710 NIC INTx masking as broken PCI: Restore PRI and PASID state after Function-Level Reset PCI: Cache PRI and PASID bits in pci_dev
| | * | | PCI: Remove __pci_dev_reset() and pci_dev_reset()Christoph Hellwig2017-07-031-56/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the reset probing / reset chain directly in __pci_probe_reset_function() and __pci_reset_function_locked() respectively. Link: http://lkml.kernel.org/r/20170601111039.8913-4-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| | * | | PCI: Split ->reset_notify() method into ->reset_prepare() and ->reset_done()Christoph Hellwig2017-07-031-19/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pci_error_handlers->reset_notify() method had a flag to indicate whether to prepare for or clean up after a reset. The prepare and done cases have no shared functionality whatsoever, so split them into separate methods. [bhelgaas: changelog, update locking comments] Link: http://lkml.kernel.org/r/20170601111039.8913-3-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| | * | | PCI: Protect pci_error_handlers->reset_notify() usage with device_lock()Christoph Hellwig2017-06-141-8/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every method in struct device_driver or structures derived from it like struct pci_driver MUST provide exclusion vs the driver's ->remove() method, usually by using device_lock(). Protect use of pci_error_handlers->reset_notify() by holding the device lock while calling it. Note: - pci_dev_lock() calls device_lock() in addition to blocking user-space config accesses. - pci_err_handlers->reset_notify() is used inside pci_dev_save_and_disable() and pci_dev_restore(). We could hold the device lock directly in pci_reset_notify(), but we expand the region since we have several calls following each other. Without this, ->reset_notify() may race with ->remove() calls, which can be easily triggered in NVMe. [bhelgaas: changelog, add pci_reset_notify() comment] [bhelgaas: fold in fix from Dan Carpenter <dan.carpenter@oracle.com>: http://lkml.kernel.org/r/20170701135323.x5vaj4e2wcs2mcro@mwanda] Link: http://lkml.kernel.org/r/20170601111039.8913-2-hch@lst.de Reported-by: Rakesh Pandit <rakesh@tuxera.com> Tested-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| | * | | PCI: Protect pci_driver->sriov_configure() usage with device_lock()Jakub Kicinski2017-06-143-8/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every method in struct device_driver or structures derived from it like struct pci_driver MUST provide exclusion vs the driver's ->remove() method, usually by using device_lock(). Protect use of pci_driver->sriov_configure() by holding the device lock while calling it. The PCI core sets the pci_dev->driver pointer in local_pci_probe() before calling ->probe() and only clears it after ->remove(). This means driver's ->sriov_configure() callback will happily race with probe() and remove(), most likely leading to BUGs, since drivers don't expect this. Remove the iov lock completely, since we remove the last user. [bhelgaas: changelog, thanks to Christoph for locking rule] Link: http://lkml.kernel.org/r/20170522225023.14010-1-jakub.kicinski@netronome.com Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
| | * | | PCI: Mark Intel XXV710 NIC INTx masking as brokenAlex Williamson2017-06-121-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Just like the other XL710 and X710 variants, the XXV710 device IDs appear to have the same hardware bug, the status register doesn't report pending interrupts resulting in "irq xx: nobody cared..." errors from the spurious interrupt handler when we try to use it with device assignment. Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
generated by cgit v1.2.3 (git 2.46.0) at 2025-04-24 04:04:06 +0000