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