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, 56 insertions, 0 deletions

diff --git a/drivers/cache/Kconfig b/drivers/cache/Kconfig
new file mode 100644
index 000000000..1518449d4
--- /dev/null
+++ b/drivers/cache/Kconfig
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0
+
+menuconfig CACHEMAINT_FOR_DMA
+	bool "Cache management for noncoherent DMA"
+	depends on RISCV
+	default y
+	help
+	  These drivers implement support for noncoherent DMA master devices
+	  on platforms that lack the standard CPU interfaces for this.
+
+if CACHEMAINT_FOR_DMA
+
+config AX45MP_L2_CACHE
+	bool "Andes Technology AX45MP L2 Cache controller"
+	select RISCV_NONSTANDARD_CACHE_OPS
+	help
+	  Support for the L2 cache controller on Andes Technology AX45MP platforms.
+
+config SIFIVE_CCACHE
+	bool "Sifive Composable Cache controller"
+	depends on ARCH_SIFIVE || ARCH_STARFIVE
+	help
+	  Support for the composable cache controller on SiFive platforms.
+
+config STARFIVE_STARLINK_CACHE
+	bool "StarFive StarLink Cache controller"
+	depends on ARCH_STARFIVE
+	depends on 64BIT
+	select RISCV_DMA_NONCOHERENT
+	select RISCV_NONSTANDARD_CACHE_OPS
+	help
+	  Support for the StarLink cache controller IP from StarFive.
+
+endif #CACHEMAINT_FOR_DMA
+
+menuconfig CACHEMAINT_FOR_HOTPLUG
+	bool "Cache management for memory hot plug like operations"
+	depends on GENERIC_CPU_CACHE_MAINTENANCE
+	help
+	  These drivers implement cache management for flows where it is necessary
+	  to flush data from all host caches.
+
+if CACHEMAINT_FOR_HOTPLUG
+
+config HISI_SOC_HHA
+	tristate "HiSilicon Hydra Home Agent (HHA) device driver"
+	depends on (ARM64 && ACPI) || COMPILE_TEST
+	help
+	  The Hydra Home Agent (HHA) is responsible for cache coherency
+	  on the SoC. This drivers enables the cache maintenance functions of
+	  the HHA.
+
+	  This driver can be built as a module. If so, the module will be
+	  called hisi_soc_hha.
+
+endif #CACHEMAINT_FOR_HOTPLUG