| 1 | /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ |
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| 2 | /* |
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| 3 | * PRUSS Remote Processor specific types |
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| 4 | * |
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| 5 | * Copyright (C) 2014-2020 Texas Instruments Incorporated - https://www.ti.com/ |
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| 6 | * Suman Anna <s-anna@ti.com> |
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| 7 | */ |
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| 8 | |
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| 9 | #ifndef _PRU_RPROC_H_ |
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| 10 | #define _PRU_RPROC_H_ |
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| 11 | |
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| 12 | /** |
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| 13 | * struct pruss_int_map - PRU system events _to_ channel and host mapping |
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| 14 | * @event: number of the system event |
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| 15 | * @chnl: channel number assigned to a given @event |
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| 16 | * @host: host number assigned to a given @chnl |
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| 17 | * |
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| 18 | * PRU system events are mapped to channels, and these channels are mapped |
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| 19 | * to host interrupts. Events can be mapped to channels in a one-to-one or |
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| 20 | * many-to-one ratio (multiple events per channel), and channels can be |
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| 21 | * mapped to host interrupts in a one-to-one or many-to-one ratio (multiple |
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| 22 | * channels per interrupt). |
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| 23 | */ |
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| 24 | struct pruss_int_map { |
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| 25 | u8 event; |
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| 26 | u8 chnl; |
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| 27 | u8 host; |
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| 28 | }; |
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| 29 | |
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| 30 | /** |
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| 31 | * struct pru_irq_rsc - PRU firmware section header for IRQ data |
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| 32 | * @type: resource type |
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| 33 | * @num_evts: number of described events |
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| 34 | * @pru_intc_map: PRU interrupt routing description |
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| 35 | * |
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| 36 | * The PRU firmware blob can contain optional .pru_irq_map ELF section, which |
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| 37 | * provides the PRUSS interrupt mapping description. The pru_irq_rsc struct |
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| 38 | * describes resource entry format. |
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| 39 | */ |
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| 40 | struct pru_irq_rsc { |
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| 41 | u8 type; |
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| 42 | u8 num_evts; |
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| 43 | struct pruss_int_map pru_intc_map[]; |
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| 44 | } __packed; |
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| 45 | |
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| 46 | #endif /* _PRU_RPROC_H_ */ |
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| 47 | |
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