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, 120 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-driver-ccp b/Documentation/ABI/testing/sysfs-driver-ccp
new file mode 100644
index 000000000..6ec74b9a2
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-ccp
@@ -0,0 +1,120 @@
+What:		/sys/bus/pci/devices/<BDF>/fused_part
+Date:		June 2022
+KernelVersion:	5.19
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/fused_part file reports
+		whether the CPU or APU has been fused to prevent tampering.
+		0: Not fused
+		1: Fused
+
+What:		/sys/bus/pci/devices/<BDF>/boot_integrity
+Date:		April 2026
+KernelVersion:	6.20
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/boot_integrity reports
+		whether the AMD CPU or APU is used for a hardware root of trust
+		during the boot process.
+		Possible values:
+		0: Not hardware root of trust.
+		1: Hardware root of trust
+
+		NOTE: Vendors may provide design specific alternative hardware
+		root of trust implementations.
+
+What:		/sys/bus/pci/devices/<BDF>/debug_lock_on
+Date:		June 2022
+KernelVersion:	5.19
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/debug_lock_on reports
+		whether the AMD CPU or APU has been unlocked for debugging.
+		Possible values:
+		0: Not locked
+		1: Locked
+
+What:		/sys/bus/pci/devices/<BDF>/tsme_status
+Date:		June 2022
+KernelVersion:	5.19
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/tsme_status file reports
+		the status of transparent secure memory encryption on AMD systems.
+		Possible values:
+		0: Not active
+		1: Active
+
+What:		/sys/bus/pci/devices/<BDF>/anti_rollback_status
+Date:		June 2022
+KernelVersion:	5.19
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/anti_rollback_status file reports
+		whether the PSP is enforcing rollback protection.
+		Possible values:
+		0: Not enforcing
+		1: Enforcing
+
+What:		/sys/bus/pci/devices/<BDF>/rpmc_production_enabled
+Date:		June 2022
+KernelVersion:	5.19
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/rpmc_production_enabled file reports
+		whether Replay Protected Monotonic Counter support has been enabled.
+		Possible values:
+		0: Not enabled
+		1: Enabled
+
+What:		/sys/bus/pci/devices/<BDF>/rpmc_spirom_available
+Date:		June 2022
+KernelVersion:	5.19
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/rpmc_spirom_available file reports
+		whether an Replay Protected Monotonic Counter supported SPI is installed
+		on the system.
+		Possible values:
+		0: Not present
+		1: Present
+
+What:		/sys/bus/pci/devices/<BDF>/hsp_tpm_available
+Date:		June 2022
+KernelVersion:	5.19
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/hsp_tpm_available file reports
+		whether the HSP TPM has been activated.
+		Possible values:
+		0: Not activated or present
+		1: Activated
+
+What:		/sys/bus/pci/devices/<BDF>/rom_armor_enforced
+Date:		June 2022
+KernelVersion:	5.19
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/rom_armor_enforced file reports
+		whether RomArmor SPI protection is enforced.
+		Possible values:
+		0: Not enforced
+		1: Enforced
+
+What:		/sys/bus/pci/devices/<BDF>/bootloader_version
+Date:		June 2023
+KernelVersion:	6.4
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/bootloader_version
+		file reports the firmware version of the AMD AGESA
+		bootloader.
+
+What:		/sys/bus/pci/devices/<BDF>/tee_version
+Date:		June 2023
+KernelVersion:	6.4
+Contact:	mario.limonciello@amd.com
+Description:
+		The /sys/bus/pci/devices/<BDF>/tee_version
+		file reports the firmware version of the AMD Trusted
+		Execution Environment (TEE).