106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
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/****************************************************************************
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*
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* Copyright (c) 2014 - 2016 Samsung Electronics Co., Ltd. All rights reserved
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*
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* Maxwell Mailbox Interrupt Generator Emulation (Interface)
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*
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****************************************************************************/
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#ifndef __PCIE_MBOX_INTGEN_H
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#define __PCIE_MBOX_INTGEN_H
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/* Uses */
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#include "linux/types.h"
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/* Forward Types */
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struct pcie_mbox_intgen_shared_data;
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struct functor;
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/* Public Types */
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/**
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* Maxwell Mailbox Interrupt Generator Emulation descriptor
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*
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* Uses structures in shared memory to emulate the Interrupt Generation
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* Hardware in conjunction with matching logic in R4 & M4 firmware.
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*
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* This is used to implement 3 instances of the Interrupt Generation (intgen)
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* hardware (to ap, to r4 & to m4).
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*/
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struct pcie_mbox_intgen {
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char name[16];
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struct pcie_mbox_intgen_shared_data *shared_data;
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struct functor *trigger_interrupt_fn;
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};
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/* Public Functions */
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/**
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* Initialise this Interrupt Generator.
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*/
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void pcie_mbox_intgen_init(
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/** This Interrupt Generator emulation */
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struct pcie_mbox_intgen *intgen,
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/** Name for debugging purposes */
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const char *name,
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/** Pointer to shared data for this emulation */
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struct pcie_mbox_intgen_shared_data *shared_data,
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/**
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* Functor to trigger associated hardware interrupt.
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*
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* The trigger is abstracted so that the same logic can be
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* re-used for the incoming and outgoing emulations.
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*/
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struct functor *trigger_interrupt_fn
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);
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/**
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* Get this Interrupt Generator's source masked state as a bitmask.
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*/
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u32 pcie_mbox_intgen_get_masked_bitmask(const struct pcie_mbox_intgen *intgen);
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/**
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* Get this Interrupt Generator's source pending state (set and not masked) as a bitmask.
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*/
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u32 pcie_mbox_intgen_get_pending_bitmask(const struct pcie_mbox_intgen *intgen);
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/**
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* Set specified Interrupt Generator source.
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*
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* Triggers interrupt on the interrupt target if the source is not masked.
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*/
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void pcie_mbox_intgen_set_source(struct pcie_mbox_intgen *intgen, int source_num);
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/**
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* Clear specified Interrupt Generator source.
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*/
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void pcie_mbox_intgen_clear_source(struct pcie_mbox_intgen *intgen, int source_num);
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/**
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* Mask specified Interrupt Generator source.
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*/
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void pcie_mbox_intgen_mask_source(struct pcie_mbox_intgen *intgen, int source_num);
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/**
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* Unmask specified Interrupt Generator source.
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*
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* The associated hardware interrupt will be triggered if
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* the specified source is currently set.
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*/
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void pcie_mbox_intgen_unmask_source(struct pcie_mbox_intgen *intgen, int source_num);
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/**
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* Is the specified interrupt source pending (set and not masked)?
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*/
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bool pcie_mbox_intgen_is_source_pending(const struct pcie_mbox_intgen *intgen, int source_num);
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#endif /* __PCIE_MBOX_INTGEN_H */
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