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>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
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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#include <sbi/sbi_error.h>
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#include <sbi_utils/mailbox/mailbox.h>
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#include <sbi_utils/mailbox/rpmi_mailbox.h>
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int rpmi_xlate_error(enum rpmi_error error)
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{
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switch(error) {
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case RPMI_SUCCESS:
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return SBI_OK;
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case RPMI_ERR_FAILED:
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return SBI_EFAIL;
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case RPMI_ERR_NOTSUPP:
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return SBI_ENOTSUPP;
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case RPMI_ERR_INVALID_PARAM:
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return SBI_EINVAL;
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case RPMI_ERR_DENIED:
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return SBI_EDENIED;
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case RPMI_ERR_INVALID_ADDR:
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return SBI_EINVALID_ADDR;
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case RPMI_ERR_ALREADY:
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return SBI_EALREADY;
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case RPMI_ERR_EXTENSION:
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return SBI_EFAIL;
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case RPMI_ERR_HW_FAULT:
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return SBI_EIO;
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case RPMI_ERR_BUSY:
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return SBI_EFAIL;
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case RPMI_ERR_INVALID_STATE:
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return SBI_EINVALID_STATE;
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case RPMI_ERR_BAD_RANGE:
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return SBI_EBAD_RANGE;
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case RPMI_ERR_TIMEOUT:
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return SBI_ETIMEDOUT;
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case RPMI_ERR_IO:
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return SBI_EIO;
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case RPMI_ERR_NO_DATA:
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return SBI_EFAIL;
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default:
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return SBI_EUNKNOWN;
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}
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}
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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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{
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int ret;
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struct mbox_xfer xfer;
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struct rpmi_message_args args = { 0 };
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args.type = RPMI_MSG_NORMAL_REQUEST;
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args.service_id = service_id;
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args.tx_endian_words = req_endian_words;
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args.rx_endian_words = resp_endian_words;
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mbox_xfer_init_txrx(&xfer, &args,
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req, sizeof(u32) * req_words, RPMI_DEF_TX_TIMEOUT,
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resp, sizeof(u32) * resp_words, RPMI_DEF_RX_TIMEOUT);
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ret = mbox_chan_xfer(chan, &xfer);
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if (ret)
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return ret;
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return rpmi_xlate_error(((u32 *)resp)[0]);
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}
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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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{
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struct mbox_xfer xfer;
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struct rpmi_message_args args = { 0 };
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args.type = RPMI_MSG_POSTED_REQUEST;
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args.flags = RPMI_MSG_FLAGS_NO_RX;
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args.service_id = service_id;
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args.tx_endian_words = req_endian_words;
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mbox_xfer_init_tx(&xfer, &args,
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req, sizeof(u32) * req_words, RPMI_DEF_TX_TIMEOUT);
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return mbox_chan_xfer(chan, &xfer);
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}
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