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| author | Bjoern A. Zeeb <bz@FreeBSD.org> | 2023-05-16 20:59:30 +0000 |
|---|---|---|
| committer | Bjoern A. Zeeb <bz@FreeBSD.org> | 2023-06-26 09:19:42 +0000 |
| commit | e7c58fc886ec09fe16bb544a2a3b2e9fcfbc0008 (patch) | |
| tree | 2bd1caf8fc229a4f3190f0aa4938f4be5ffc96bd | |
| parent | d6f5ea1dc1b32021fa623c27bfcfa17f9e4e2567 (diff) | |
| download | src-e7c58fc886ec09fe16bb544a2a3b2e9fcfbc0008.tar.gz src-e7c58fc886ec09fe16bb544a2a3b2e9fcfbc0008.zip | |
LinuxKPI: implement pci_rescan_bus()
Try to implement pci_rescan_bus(). pci_rescan_method() is already
doing most of the job. We only have to do the count for the return
value again ourselves.
Sponsored by: The FreeBSD Foundation
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D40122
(cherry picked from commit 525dd4acaacc59b815131caccfdebc905d4d7bff)
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/pci.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/pci.h b/sys/compat/linuxkpi/common/include/linux/pci.h index 55435f6b72bc..f3c495ff1a21 100644 --- a/sys/compat/linuxkpi/common/include/linux/pci.h +++ b/sys/compat/linuxkpi/common/include/linux/pci.h @@ -277,6 +277,7 @@ _Static_assert(sizeof(struct pci_driver) == __PCI_DRIVER_SIZE, struct pci_bus { struct pci_dev *self; + /* struct pci_bus *parent */ int domain; int number; }; @@ -1425,6 +1426,29 @@ pci_stop_and_remove_bus_device(struct pci_dev *pdev) { } +static inline int +pci_rescan_bus(struct pci_bus *pbus) +{ + device_t *devlist, parent; + int devcount, error; + + if (!device_is_attached(pbus->self->dev.bsddev)) + return (0); + /* pci_rescan_method() will work on the pcib (parent). */ + error = BUS_RESCAN(pbus->self->dev.bsddev); + if (error != 0) + return (0); + + parent = device_get_parent(pbus->self->dev.bsddev); + error = device_get_children(parent, &devlist, &devcount); + if (error != 0) + return (0); + if (devcount != 0) + free(devlist, M_TEMP); + + return (devcount); +} + /* * The following functions can be used to attach/detach the LinuxKPI's * PCI device runtime. The pci_driver and pci_device_id pointer is |