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47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
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/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
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/*
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* PRUSS Remote Processor specific types
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*
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* Copyright (C) 2014-2020 Texas Instruments Incorporated - https://www.ti.com/
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* Suman Anna <s-anna@ti.com>
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*/
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#ifndef _PRU_RPROC_H_
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#define _PRU_RPROC_H_
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/**
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* struct pruss_int_map - PRU system events _to_ channel and host mapping
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* @event: number of the system event
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* @chnl: channel number assigned to a given @event
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* @host: host number assigned to a given @chnl
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*
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* PRU system events are mapped to channels, and these channels are mapped
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* to host interrupts. Events can be mapped to channels in a one-to-one or
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* many-to-one ratio (multiple events per channel), and channels can be
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* mapped to host interrupts in a one-to-one or many-to-one ratio (multiple
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* channels per interrupt).
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*/
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struct pruss_int_map {
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u8 event;
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u8 chnl;
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u8 host;
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};
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/**
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* struct pru_irq_rsc - PRU firmware section header for IRQ data
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* @type: resource type
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* @num_evts: number of described events
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* @pru_intc_map: PRU interrupt routing description
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*
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* The PRU firmware blob can contain optional .pru_irq_map ELF section, which
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* provides the PRUSS interrupt mapping description. The pru_irq_rsc struct
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* describes resource entry format.
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*/
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struct pru_irq_rsc {
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u8 type;
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u8 num_evts;
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struct pruss_int_map pru_intc_map[];
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} __packed;
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#endif /* _PRU_RPROC_H_ */
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