From 6f88a6ec7dce8eb12f52afcc0f7fcbaececa06e7 Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Mon, 18 Jul 2011 10:41:36 -0700 Subject: Add helper function to find a Local APIC by ID in the device tree. Change-Id: Ie2d7d8e1f647a0c92d2de09e32454fbea688b1e7 Signed-off-by: Duncan Laurie Reviewed-on: http://review.coreboot.org/695 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich --- src/devices/device_util.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'src/devices/device_util.c') diff --git a/src/devices/device_util.c b/src/devices/device_util.c index 84fb11505c..5b182e1e89 100644 --- a/src/devices/device_util.c +++ b/src/devices/device_util.c @@ -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. * -- cgit v1.2.3