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Diffstat (limited to 'docs/platform-interrupt-controller-API.rst')
| -rw-r--r-- | docs/platform-interrupt-controller-API.rst | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/docs/platform-interrupt-controller-API.rst b/docs/platform-interrupt-controller-API.rst index d5c16733..795c0856 100644 --- a/docs/platform-interrupt-controller-API.rst +++ b/docs/platform-interrupt-controller-API.rst @@ -274,6 +274,24 @@ In case of ARM standard platforms using GIC, the implementation of the API writes to the GIC *Clear Pending Register* to clear the interrupt pending status, and inserts barrier to make memory updates visible afterwards. +Function: unsigned int plat_ic_set_priority_mask(unsigned int id); [optional] +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +:: + + Argument : unsigned int + Return : int + +This API should set the priority mask (first parameter) in the interrupt +controller such that only interrupts of higher priority than the supplied one +may be signalled to the PE. The API should return the current priority value +that it's overwriting. + +In case of ARM standard platforms using GIC, the implementation of the API +inserts to order memory updates before updating mask, then writes to the GIC +*Priority Mask Register*, and make sure memory updates are visible before +potential trigger due to mask update. + ---- *Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.* |