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Message-ID: <20250925135014.66865-1-marek.vasut+renesas@mailbox.org> Date: Thu, 25 Sep 2025 15:49:45 +0200 From: Marek Vasut <marek.vasut+renesas@...lbox.org> To: linux-pci@...r.kernel.org Cc: Marek Vasut <marek.vasut+renesas@...lbox.org>, Krzysztof Wilczyński <kwilczynski@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, Christian Bruel <christian.bruel@...s.st.com>, Geert Uytterhoeven <geert+renesas@...der.be>, Inochi Amaoto <inochiama@...il.com>, Lorenzo Pieralisi <lpieralisi@...nel.org>, Magnus Damm <magnus.damm@...il.com>, Manivannan Sadhasivam <mani@...nel.org>, Mayank Rana <mayank.rana@....qualcomm.com>, Nam Cao <namcao@...utronix.de>, Rob Herring <robh@...nel.org>, Shradha Todi <shradha.t@...sung.com>, Thippeswamy Havalige <thippeswamy.havalige@....com>, Thomas Gleixner <tglx@...utronix.de>, Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>, linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org Subject: [PATCH] PCI: controller: Mark controllers which cannot do lockless config access with !PCI_LOCKLESS_CONFIG Add 'depends on !PCI_LOCKLESS_CONFIG' to controllers which cannot do config access without PCI subsystem level spinlock. If PCI_LOCKLESS_CONFIG is ever enabled, those controllers would have to be updated accordingly. Signed-off-by: Marek Vasut <marek.vasut+renesas@...lbox.org> --- Cc: "Krzysztof Wilczyński" <kwilczynski@...nel.org> Cc: Bjorn Helgaas <bhelgaas@...gle.com> Cc: Christian Bruel <christian.bruel@...s.st.com> Cc: Geert Uytterhoeven <geert+renesas@...der.be> Cc: Inochi Amaoto <inochiama@...il.com> Cc: Lorenzo Pieralisi <lpieralisi@...nel.org> Cc: Magnus Damm <magnus.damm@...il.com> Cc: Manivannan Sadhasivam <mani@...nel.org> Cc: Mayank Rana <mayank.rana@....qualcomm.com> Cc: Nam Cao <namcao@...utronix.de> Cc: Rob Herring <robh@...nel.org> Cc: Shradha Todi <shradha.t@...sung.com> Cc: Thippeswamy Havalige <thippeswamy.havalige@....com> Cc: Thomas Gleixner <tglx@...utronix.de> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com> Cc: linux-kernel@...r.kernel.org Cc: linux-pci@...r.kernel.org Cc: linux-renesas-soc@...r.kernel.org --- NOTE: I hope I got them all --- drivers/pci/controller/Kconfig | 6 ++++++ drivers/pci/controller/dwc/Kconfig | 5 +++++ drivers/pci/controller/plda/Kconfig | 1 + 3 files changed, 12 insertions(+) diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig index 41748d083b933..1a6e937cca929 100644 --- a/drivers/pci/controller/Kconfig +++ b/drivers/pci/controller/Kconfig @@ -12,6 +12,7 @@ config PCI_AARDVARK depends on (ARCH_MVEBU && ARM64) || COMPILE_TEST depends on OF depends on PCI_MSI + depends on !PCI_LOCKLESS_CONFIG select PCI_BRIDGE_EMUL select IRQ_MSI_LIB help @@ -205,6 +206,7 @@ config PCIE_MEDIATEK_GEN3 tristate "MediaTek Gen3 PCIe controller" depends on ARCH_AIROHA || ARCH_MEDIATEK || COMPILE_TEST depends on PCI_MSI + depends on !PCI_LOCKLESS_CONFIG select IRQ_MSI_LIB help Adds support for PCIe Gen3 MAC controller for MediaTek SoCs. @@ -244,6 +246,7 @@ config PCIE_RCAR_HOST bool "Renesas R-Car PCIe controller (host mode)" depends on ARCH_RENESAS || COMPILE_TEST depends on PCI_MSI + depends on !PCI_LOCKLESS_CONFIG select IRQ_MSI_LIB help Say Y here if you want PCIe controller support on R-Car SoCs in host @@ -332,6 +335,7 @@ config PCIE_XILINX_DMA_PL bool "Xilinx DMA PL PCIe host bridge support" depends on ARCH_ZYNQMP || COMPILE_TEST depends on PCI_MSI + depends on !PCI_LOCKLESS_CONFIG select PCI_HOST_COMMON select IRQ_MSI_LIB help @@ -344,6 +348,7 @@ config PCIE_XILINX_NWL bool "Xilinx NWL PCIe controller" depends on ARCH_ZYNQMP || COMPILE_TEST depends on PCI_MSI + depends on !PCI_LOCKLESS_CONFIG select IRQ_MSI_LIB help Say 'Y' here if you want kernel support for Xilinx @@ -354,6 +359,7 @@ config PCIE_XILINX_NWL config PCIE_XILINX_CPM bool "Xilinx Versal CPM PCI controller" depends on ARCH_ZYNQMP || COMPILE_TEST + depends on !PCI_LOCKLESS_CONFIG select PCI_HOST_COMMON help Say 'Y' here if you want kernel support for the diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig index 34abc859c1071..8eab27775195f 100644 --- a/drivers/pci/controller/dwc/Kconfig +++ b/drivers/pci/controller/dwc/Kconfig @@ -2,6 +2,7 @@ menu "DesignWare-based PCIe controllers" depends on PCI + depends on !PCI_LOCKLESS_CONFIG config PCIE_DW bool @@ -322,6 +323,7 @@ config PCIE_RCAR_GEN4_HOST tristate "Renesas R-Car Gen4 PCIe controller (host mode)" depends on ARCH_RENESAS || COMPILE_TEST depends on PCI_MSI + depends on !PCI_LOCKLESS_CONFIG select PCIE_DW_HOST select PCIE_RCAR_GEN4 help @@ -390,6 +392,7 @@ config PCIE_UNIPHIER depends on ARCH_UNIPHIER || COMPILE_TEST depends on OF && HAS_IOMEM depends on PCI_MSI + depends on !PCI_LOCKLESS_CONFIG select PCIE_DW_HOST help Say Y here if you want PCIe host controller support on UniPhier SoCs. @@ -410,6 +413,7 @@ config PCIE_SOPHGO_DW depends on ARCH_SOPHGO || COMPILE_TEST depends on PCI_MSI depends on OF + depends on !PCI_LOCKLESS_CONFIG select PCIE_DW_HOST help Say Y here if you want PCIe host controller support on @@ -488,6 +492,7 @@ config PCI_KEYSTONE_HOST bool "TI Keystone PCIe controller (host mode)" depends on ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST depends on PCI_MSI + depends on !PCI_LOCKLESS_CONFIG select PCIE_DW_HOST select PCI_KEYSTONE help diff --git a/drivers/pci/controller/plda/Kconfig b/drivers/pci/controller/plda/Kconfig index 62120101139cb..2a400678312eb 100644 --- a/drivers/pci/controller/plda/Kconfig +++ b/drivers/pci/controller/plda/Kconfig @@ -10,6 +10,7 @@ config PCIE_PLDA_HOST config PCIE_MICROCHIP_HOST tristate "Microchip AXI PCIe controller" depends on PCI_MSI && OF + depends on !PCI_LOCKLESS_CONFIG select PCI_HOST_COMMON select PCIE_PLDA_HOST help -- 2.51.0
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