forked from Mirrors/opensbi
91f46fb47e
The RISC-V Platform Management Interface (RPMI) defines a messaging protocol and shared memory based transport for bi-directional communication with an on-chip or external microcontroller. To support RPMI in OpenSBI, add: 1) The RPMI messaging protocol defines and helper macros 2) A FDT mailbox driver for the RPMI shared memory transport Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com> Co-developed-by: Subrahmanya Lingappa <slingappa@ventanamicro.com> Signed-off-by: Subrahmanya Lingappa <slingappa@ventanamicro.com> Co-developed-by: Anup Patel <apatel@ventanamicro.com> Signed-off-by: Anup Patel <apatel@ventanamicro.com>
33 lines
898 B
C
33 lines
898 B
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2023 Ventana Micro Systems Inc.
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*
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* Authors:
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* Anup Patel <apatel@ventanamicro.com>
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*/
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#ifndef __RPMI_MAILBOX_H__
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#define __RPMI_MAILBOX_H__
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#include <sbi/sbi_error.h>
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#include <sbi_utils/mailbox/rpmi_msgprot.h>
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#define rpmi_u32_count(__var) (sizeof(__var) / sizeof(u32))
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/** Convert RPMI error to SBI error */
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int rpmi_xlate_error(enum rpmi_error error);
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/** Typical RPMI normal request with at least status code in response */
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int rpmi_normal_request_with_status(
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struct mbox_chan *chan, u32 service_id,
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void *req, u32 req_words, u32 req_endian_words,
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void *resp, u32 resp_words, u32 resp_endian_words);
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/* RPMI posted request which is without any response*/
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int rpmi_posted_request(
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struct mbox_chan *chan, u32 service_id,
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void *req, u32 req_words, u32 req_endian_words);
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#endif /* !__RPMI_MAILBOX_H__ */
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