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| author | Subrata Banik <subrata.banik@intel.com> | 2016-12-06 18:06:30 +0530 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-12-07 22:55:20 +0100 |
| commit | fe204fe902f5d08dbf07e0f9686e4315c67292ea (patch) | |
| tree | dc2ee1b0161ae9bec6de97cf6ce84922ba97a888 | |
| parent | d6c555971b9f9f0c2d49269b0874e3480258531a (diff) | |
| download | coreboot-fe204fe902f5d08dbf07e0f9686e4315c67292ea.tar.xz | |
src/device: Get device structure by path type
Add helper function to find a device by path type
in the device tree.
Change-Id: I8846f63bd2488788ea3c7ab5154e7cf431a252bc
Credits-to: Aaron Durbin <adurbin@chromium.org>
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Signed-off-by: Dhaval V Sharma <dhaval.v.sharma@intel.com>
Reviewed-on: https://review.coreboot.org/17731
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
| -rw-r--r-- | src/device/device_util.c | 25 | ||||
| -rw-r--r-- | src/include/device/device.h | 1 |
2 files changed, 26 insertions, 0 deletions
diff --git a/src/device/device_util.c b/src/device/device_util.c index 157f7b7443..cd33aac263 100644 --- a/src/device/device_util.c +++ b/src/device/device_util.c @@ -131,6 +131,31 @@ device_t dev_find_lapic(unsigned apic_id) } /** + * Given a Device Path Type, find the device structure. + * + * @param prev_match The previously matched device instance. + * @param path_type The Device Path Type. + * @return Pointer to the device structure (if found), 0 otherwise. + */ +device_t dev_find_path(device_t prev_match, enum device_path_type path_type) +{ + device_t dev, result = NULL; + + if (prev_match == NULL) + prev_match = all_devices; + else + prev_match = prev_match->next; + + for (dev = prev_match; dev; dev = dev->next) { + if (dev->path.type == path_type) { + result = dev; + break; + } + } + return result; +} + +/** * Find a device of a given vendor and type. * * @param vendor A PCI vendor ID (e.g. 0x8086 for Intel). diff --git a/src/include/device/device.h b/src/include/device/device.h index d81399d6ef..39bf718f1f 100644 --- a/src/include/device/device.h +++ b/src/include/device/device.h @@ -195,6 +195,7 @@ device_t find_dev_path(struct bus *parent, struct device_path *path); device_t alloc_find_dev(struct bus *parent, struct device_path *path); 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_path(device_t prev_match, enum device_path_type path_type); 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_slot_pnp(u16 port, u16 device); |