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feature: L0 Device Hierarchy support for Composite & Flat modes

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Related-To: LOCI-4615

- Added Support for users to set ZE_FLAT_DEVICE_HIERARCHY to either FLAT
or COMPOSITE to change how devices are returned in zeDeviceGet and
clGetDeviceIDs.
- COMPOSITE is default behavior that exists today.
- FLAT returns all sub devices which have no sub devices and all root
devices that have no sub devices in zeDeviceGet ie with all devices
flattened out in order.
- Added zeDeviceGetRootDevice for one to retrieve the Root Device for
any SubDevice.

Signed-off-by: Neil R Spruit <neil.r.spruit@intel.com>
This commit is contained in:
Neil R Spruit
2023-07-12 02:14:09 +00:00
committed by Compute-Runtime-Automation
parent 5b80bd4d7c
commit 8efd8853fb
19 changed files with 403 additions and 2 deletions
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level_zero/core/source/device/device.h
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@@ -68,6 +68,7 @@ struct Device : _ze_device_handle_t {
ze_device_p2p_properties_t *pP2PProperties) = 0;
virtual ze_result_t getKernelProperties(ze_device_module_properties_t *pKernelProperties) = 0;
virtual ze_result_t getPciProperties(ze_pci_ext_properties_t *pPciProperties) = 0;
virtual ze_result_t getRootDevice(ze_device_handle_t *phRootDevice) = 0;
virtual ze_result_t getMemoryProperties(uint32_t *pCount, ze_device_memory_properties_t *pMemProperties) = 0;
virtual ze_result_t getMemoryAccessProperties(ze_device_memory_access_properties_t *pMemAccessProperties) = 0;
virtual ze_result_t getProperties(ze_device_properties_t *pDeviceProperties) = 0;