git: ffcf5e356644 - main - pci: Add is_pci_device helper function

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=ffcf5e356644252f2f6c89ba01057af45c216559

commit ffcf5e356644252f2f6c89ba01057af45c216559
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2026-05-18 18:50:39 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2026-05-18 18:50:39 +0000

    pci: Add is_pci_device helper function
    
    This returns true if a given device is a PCI device (child of a PCI
    bus).
    
    Reviewed by:    bz, kib
    Sponsored by:   Chelsio Communications
    Differential Revision:  https://reviews.freebsd.org/D56996
---
 share/man/man9/Makefile |  3 ++-
 share/man/man9/pci.9    | 11 ++++++++++-
 sys/dev/pci/pci.c       | 11 +++++++++++
 sys/dev/pci/pcivar.h    |  1 +
 4 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile
index fbb981891ce4..7044b6f1bb68 100644
--- a/share/man/man9/Makefile
+++ b/share/man/man9/Makefile
@@ -1803,7 +1803,8 @@ MLINKS+=osd.9 osd_call.9 \
 	osd.9 osd_set_reserved.9
 MLINKS+=panic.9 vpanic.9 \
 	panic.9 KERNEL_PANICKED.9
-MLINKS+=pci.9 pci_alloc_msi.9 \
+MLINKS+=pci.9 is_pci_device.9 \
+	pci.9 pci_alloc_msi.9 \
 	pci.9 pci_alloc_msix.9 \
 	pci.9 pci_clear_pme.9 \
 	pci.9 pci_disable_busmaster.9 \
diff --git a/share/man/man9/pci.9 b/share/man/man9/pci.9
index 871f69f887a6..4d69d3a4240f 100644
--- a/share/man/man9/pci.9
+++ b/share/man/man9/pci.9
@@ -23,11 +23,12 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd March 27, 2025
+.Dd May 18, 2026
 .Dt PCI 9
 .Os
 .Sh NAME
 .Nm pci ,
+.Nm is_pci_device ,
 .Nm pci_alloc_msi ,
 .Nm pci_alloc_msix ,
 .Nm pci_clear_pme ,
@@ -80,6 +81,8 @@
 .In sys/bus.h
 .In dev/pci/pcireg.h
 .In dev/pci/pcivar.h
+.Ft bool
+.Fn is_pci_device "device_t dev"
 .Ft int
 .Fn pci_alloc_msi "device_t dev" "int *count"
 .Ft int
@@ -202,6 +205,12 @@ device information,
 device configuration,
 and
 message signaled interrupts.
+.Pp
+The
+.Fn is_pci_device
+function can be used to determine if
+.Fa dev
+is a PCI device.
 .Ss Raw Configuration Access
 The
 .Fn pci_read_config
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c
index b5a3012accd6..adf3daea66fd 100644
--- a/sys/dev/pci/pci.c
+++ b/sys/dev/pci/pci.c
@@ -6993,6 +6993,17 @@ pci_print_faulted_dev(void)
 	}
 }
 
+bool
+is_pci_device(device_t dev)
+{
+	devclass_t pci_class;
+
+	if (device_get_parent(dev) == NULL)
+		return (false);
+	pci_class = devclass_find("pci");
+	return (device_get_devclass(device_get_parent(dev)) == pci_class);
+}
+
 #ifdef DDB
 DB_SHOW_COMMAND_FLAGS(pcierr, pci_print_faulted_dev_db, DB_CMD_MEMSAFE)
 {
diff --git a/sys/dev/pci/pcivar.h b/sys/dev/pci/pcivar.h
index 696e1c688c68..bcd4d2d35b54 100644
--- a/sys/dev/pci/pcivar.h
+++ b/sys/dev/pci/pcivar.h
@@ -676,6 +676,7 @@ pci_child_added(device_t dev)
     return (PCI_CHILD_ADDED(device_get_parent(dev), dev));
 }
 
+bool	is_pci_device(device_t dev);
 device_t pci_find_bsf(uint8_t, uint8_t, uint8_t);
 device_t pci_find_dbsf(uint32_t, uint8_t, uint8_t, uint8_t);
 device_t pci_find_device(uint16_t, uint16_t);