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LinuxKPI: pci: add [linuxkpi_]pci_get_device()

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Add a version of pci_get_device() as linuxkpi_pci_get_device()
not (yet) supporting the last argument.
Due to conflicts we cannot redefine it as we would normally do
in LinuxKPI so drivers have to be adjusted.

MFC after:	3 days
Differential Revision: https://reviews.freebsd.org/D37593
This commit is contained in:
Bjoern A. Zeeb 2022-12-02 22:14:09 +00:00
parent e9715b1c44
commit 8f61992d7c
2 changed files with 31 additions and 0 deletions
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14
sys/compat/linuxkpi/common/include/linux/pci.h
View file

@ -344,6 +344,7 @@ void lkpi_pci_devres_release(struct device *, void *);
struct resource *_lkpi_pci_iomap(struct pci_dev *pdev, int bar, int mmio_size);
struct pcim_iomap_devres *lkpi_pcim_iomap_devres_find(struct pci_dev *pdev);
void lkpi_pcim_iomap_table_release(struct device *, void *);
struct pci_dev *lkpi_pci_get_device(uint16_t, uint16_t, struct pci_dev *);
static inline bool
dev_is_pci(struct device *dev)
@ -1584,6 +1585,19 @@ err:
return (-EINVAL);
}
/*
* We cannot simply re-define pci_get_device() as we would normally do
* and then hide it in linux_pci.c as too many semi-native drivers still
* inlucde linux/pci.h and run into the conflict with native PCI. Linux drivers
* using pci_get_device() need to be changed to call linuxkpi_pci_get_device().
*/
static inline struct pci_dev *
linuxkpi_pci_get_device(uint16_t vendor, uint16_t device, struct pci_dev *odev)
{
return (lkpi_pci_get_device(vendor, device, odev));
}
/* This is a FreeBSD extension so we can use bus_*(). */
static inline void
linuxkpi_pcim_want_to_use_bus_functions(struct pci_dev *pdev)

17
sys/compat/linuxkpi/common/src/linux_pci.c
View file

@ -271,6 +271,23 @@ linux_pci_find(device_t dev, const struct pci_device_id **idp)
return (NULL);
}
struct pci_dev *
lkpi_pci_get_device(uint16_t vendor, uint16_t device, struct pci_dev *odev)
{
struct pci_dev *pdev;
KASSERT(odev == NULL, ("%s: odev argument not yet supported\n", __func__));
spin_lock(&pci_lock);
list_for_each_entry(pdev, &pci_devices, links) {
if (pdev->vendor == vendor && pdev->device == device)
break;
}
spin_unlock(&pci_lock);
return (pdev);
}
static void
lkpi_pci_dev_release(struct device *dev)
{