diff options
| -rw-r--r-- | src/device/device_const.c | 13 | ||||
| -rw-r--r-- | src/include/device/device.h | 13 |
2 files changed, 26 insertions, 0 deletions
diff --git a/src/device/device_const.c b/src/device/device_const.c index de404dc0d1..add253b511 100644 --- a/src/device/device_const.c +++ b/src/device/device_const.c @@ -70,6 +70,19 @@ DEVTREE_CONST struct device *dev_find_path( return result; } +DEVTREE_CONST struct device *dev_find_matching_device_on_bus(const struct bus *bus, + match_device_fn fn) +{ + DEVTREE_CONST struct device *child = NULL; + + while ((child = dev_bus_each_child(bus, child)) != NULL) { + if (fn(child)) + break; + } + + return child; +} + /** * Given a device pointer, find the next PCI device. * diff --git a/src/include/device/device.h b/src/include/device/device.h index a33702a234..4983b486a4 100644 --- a/src/include/device/device.h +++ b/src/include/device/device.h @@ -207,6 +207,19 @@ DEVTREE_CONST struct device *dev_find_path( struct device *dev_find_lapic(unsigned int apic_id); int dev_count_cpu(void); +/* + * Signature for matching function that is used by dev_find_matching_device_on_bus() to decide + * if the device being considered is the one that matches the caller's criteria. This function + * is supposed to return true if the provided device matches the criteria, else false. + */ +typedef bool (*match_device_fn)(DEVTREE_CONST struct device *dev); +/* + * Returns the first device on the bus that the match_device_fn returns true for. If no such + * device is found, it returns NULL. + */ +DEVTREE_CONST struct device *dev_find_matching_device_on_bus(const struct bus *bus, + match_device_fn fn); + struct device *add_cpu_device(struct bus *cpu_bus, unsigned int apic_id, int enabled); void set_cpu_topology(struct device *cpu, unsigned int node, |