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Add helper function to find a Local APIC by ID in the device tree. 

Change-Id: Ie2d7d8e1f647a0c92d2de09e32454fbea688b1e7
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: http://review.coreboot.org/695
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Duncan Laurie 2011-07-18 10:41:36 -07:00 committed by Stefan Reinauer
parent 5807555f9a
commit 6f88a6ec7d
2 changed files with 21 additions and 0 deletions
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20
src/devices/device_util.c
View File

@ -109,6 +109,26 @@ struct device *dev_find_slot_on_smbus(unsigned int bus, unsigned int addr)
return result;
}
/**
* Given a Local APIC ID, find the device structure.
*
* @param apic_id The Local APIC ID number.
* @return Pointer to the device structure (if found), 0 otherwise.
*/
device_t dev_find_lapic(unsigned apic_id)
{
device_t dev, result = NULL;
for (dev = all_devices; dev; dev = dev->next) {
if (dev->path.type == DEVICE_PATH_APIC &&
dev->path.apic.apic_id == apic_id) {
result = dev;
break;
}
}
return result;
}
/**
* Find a device of a given vendor and type.
*

1
src/include/device/device.h
View File

@ -132,6 +132,7 @@ device_t dev_find_device (u16 vendor, u16 device, device_t from);
device_t dev_find_class (unsigned int class, device_t from);
device_t dev_find_slot (unsigned int bus, unsigned int devfn);
device_t dev_find_slot_on_smbus (unsigned int bus, unsigned int addr);
device_t dev_find_lapic(unsigned apic_id);
/* Debug functions */
void print_resource_tree(struct device * root, int debug_level,