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pci: add a new pci_child_added newbus method.

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This is needed so when running under Xen the calls to pci_child_added
can be intercepted and a custom Xen method can be used to register
those devices with Xen. This should not include any functional
change, since the Xen implementation will be added in a following
patch and the native implementation is a noop.

Sponsored by: Citrix Systems R&D
Reviewed by: jhb

dev/pci/pci.c:
dev/pci/pci_if.m:
dev/pci/pci_private.h:
dev/pci/pcivar.h:
 - Add the pci_child_added newbus method.
This commit is contained in:
Roger Pau Monné 2014-08-22 15:05:51 +00:00
parent 3235c9eb55
commit cd407ca216
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=270332
4 changed files with 20 additions and 0 deletions
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8
sys/dev/pci/pci.c
View file

@ -183,6 +183,7 @@ static device_method_t pci_methods[] = {
DEVMETHOD(pci_msi_count, pci_msi_count_method),
DEVMETHOD(pci_msix_count, pci_msix_count_method),
DEVMETHOD(pci_get_rid, pci_get_rid_method),
DEVMETHOD(pci_child_added, pci_child_added_method),
DEVMETHOD_END
};
@ -3518,6 +3519,13 @@ pci_add_child(device_t bus, struct pci_devinfo *dinfo)
pci_cfg_restore(dinfo->cfg.dev, dinfo);
pci_print_verbose(dinfo);
pci_add_resources(bus, dinfo->cfg.dev, 0, 0);
pci_child_added(dinfo->cfg.dev);
}
void
pci_child_added_method(device_t dev, device_t child)
{
}
static int

4
sys/dev/pci/pci_if.m
View file

@ -185,3 +185,7 @@ METHOD uint16_t get_rid {
device_t child;
};
METHOD void child_added {
device_t dev;
device_t child;
};

1
sys/dev/pci/pci_private.h
View file

@ -125,6 +125,7 @@ int pci_assign_interrupt_method(device_t dev, device_t child);
int pci_resume(device_t dev);
int pci_suspend(device_t dev);
bus_dma_tag_t pci_get_dma_tag(device_t bus, device_t dev);
void pci_child_added_method(device_t dev, device_t child);
/** Restore the config register state. The state must be previously
* saved with pci_cfg_save. However, the pci bus driver takes care of

7
sys/dev/pci/pcivar.h
View file

@ -506,6 +506,13 @@ pci_get_rid(device_t dev)
return (PCI_GET_RID(device_get_parent(dev), dev));
}
static __inline void
pci_child_added(device_t dev)
{
return (PCI_CHILD_ADDED(device_get_parent(dev), 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);