PCI: Add pci_irq_type() to query the allocated interrupt typegrafted

Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX
based on the interrupt type the PCI core selected after
pci_alloc_irq_vectors().

Several drivers already open-code this check against pdev->msix_enabled
and pdev->msi_enabled, or even open code this helper [1].

A common helper avoids the duplication and keeps drivers from accessing
the bitfield directly (see also [2]).

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: John Hubbard <jhubbard@nvidia.com>
Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1]
Inspired-by: John Hubbard <jhubbard@nvidia.com>
Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2]
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org
[ Add missing pci_irq_type() stub for CONFIG_PCI=n. ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 127 insertions, 0 deletions

diff --git a/arch/mips/generic/Kconfig b/arch/mips/generic/Kconfig
new file mode 100644
index 000000000..7dc5b3821
--- /dev/null
+++ b/arch/mips/generic/Kconfig
@@ -0,0 +1,127 @@
+# SPDX-License-Identifier: GPL-2.0
+if MIPS_GENERIC_KERNEL
+
+config LEGACY_BOARDS
+	bool
+	help
+	  Select this from your board if the board must use a legacy, non-UHI,
+	  boot protocol. This will cause the kernel to scan through the list of
+	  supported machines calling their detect functions in turn if the
+	  kernel is booted without being provided with an FDT via the UHI
+	  boot protocol.
+
+config YAMON_DT_SHIM
+	bool
+	help
+	  Select this from your board if the board uses the YAMON bootloader
+	  and you wish to include code which helps translate various
+	  YAMON-provided environment variables into a device tree properties.
+
+comment "Legacy (non-UHI/non-FIT) Boards"
+
+config LEGACY_BOARD_SEAD3
+	bool "Support MIPS SEAD-3 boards"
+	select LEGACY_BOARDS
+	select YAMON_DT_SHIM
+	help
+	  Enable this to include support for booting on MIPS SEAD-3 FPGA-based
+	  development boards, which boot using a legacy boot protocol.
+
+comment "MSCC Ocelot doesn't work with SEAD3 enabled"
+	depends on LEGACY_BOARD_SEAD3
+
+config LEGACY_BOARD_OCELOT
+	bool "Legacy support for Ocelot based boards"
+	depends on LEGACY_BOARD_SEAD3=n
+	select LEGACY_BOARDS
+	select SOC_VCOREIII
+	select SYS_HAS_EARLY_PRINTK
+	select USE_GENERIC_EARLY_PRINTK_8250
+
+config SOC_VCOREIII
+	bool
+	select GPIOLIB
+	select MSCC_OCELOT_IRQ
+	select MSCC_OCELOT #will be removed when driver no more use it
+
+#Will be removed when the driver using it will be converted to SOC_VCOREIII
+config MSCC_OCELOT
+	bool
+
+comment "FIT/UHI Boards"
+
+config FIT_IMAGE_FDT_BOSTON
+	bool "Include FDT for MIPS Boston boards"
+	help
+	  Enable this to include the FDT for the MIPS Boston development board
+	  from Imagination Technologies in the FIT kernel image. You should
+	  enable this if you wish to boot on a MIPS Boston board, as it is
+	  expected by the bootloader.
+
+config FIT_IMAGE_FDT_MARDUK
+	bool "Include FDT for IMG Pistachio Marduk (CI40) boards"
+	help
+	  Enable this to include the FDT for the IMG Pistachio Marduk (CI40)
+	  from Imagination Technologies in the FIT kernel image.
+
+config FIT_IMAGE_FDT_NI169445
+	bool "Include FDT for NI 169445"
+	help
+	  Enable this to include the FDT for the 169445 platform from
+	  National Instruments in the FIT kernel image.
+
+config FIT_IMAGE_FDT_XILFPGA
+	bool "Include FDT for Xilfpga"
+	help
+	  Enable this to include the FDT for the MIPSfpga platform
+	  from Imagination Technologies in the FIT kernel image.
+
+config FIT_IMAGE_FDT_OCELOT
+	bool "Include FDT for Microsemi Ocelot development platforms"
+	select SOC_VCOREIII
+	help
+	  Enable this to include the FDT for the Ocelot development platforms
+	  from Microsemi in the FIT kernel image.
+	  This requires u-boot on the platform.
+
+config FIT_IMAGE_FDT_LUTON
+	bool "Include FDT for Microsemi Luton development platforms"
+	select SOC_VCOREIII
+	help
+	  Enable this to include the FDT for the Luton development platforms
+	  from Microsemi in the FIT kernel image.
+	  This requires u-boot on the platform.
+
+config FIT_IMAGE_FDT_JAGUAR2
+	bool "Include FDT for Microsemi Jaguar2 development platforms"
+	select SOC_VCOREIII
+	help
+	  Enable this to include the FDT for the Jaguar2 development platforms
+	  from Microsemi in the FIT kernel image.
+	  This requires u-boot on the platform.
+
+config FIT_IMAGE_FDT_SERVAL
+	bool "Include FDT for Microsemi Serval development platforms"
+	select SOC_VCOREIII
+	help
+	  Enable this to include the FDT for the Serval development platforms
+	  from Microsemi in the FIT kernel image.
+	  This requires u-boot on the platform.
+
+config BOARD_INGENIC
+	bool "Support boards based on Ingenic SoCs"
+	select MACH_INGENIC_GENERIC
+	help
+	  Enable support for boards based on Ingenic SoCs.
+
+config VIRT_BOARD_RANCHU
+	bool "Support Ranchu platform for Android emulator"
+	help
+	  This enables support for the platform used by Android emulator.
+
+	  Ranchu platform consists of a set of virtual devices. This platform
+	  enables emulation of variety of virtual configurations while using
+	  Android emulator. Android emulator is based on Qemu, and contains
+	  the support for the same set of virtual devices.
+
+endif