forked from Mirrors/opensbi
a5fdef45db
The latest frozen RPMI spec has added Implementation ID and Implementation Version as message protocol specific mpxy attributes. Add support for these. Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20250618053854.2577299-1-rpathak@ventanamicro.com Signed-off-by: Anup Patel <anup@brainfault.org>
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2024 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 __FDT_MPXY_RPMI_MBOX_H__
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#define __FDT_MPXY_RPMI_MBOX_H__
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#include <sbi/sbi_types.h>
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#include <sbi/sbi_mpxy.h>
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#include <sbi_utils/mailbox/fdt_mailbox.h>
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#include <sbi_utils/mailbox/rpmi_msgprot.h>
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#include <sbi_utils/mpxy/fdt_mpxy.h>
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/** Convert the mpxy attribute ID to attribute array index */
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#define attr_id2index(attr_id) (attr_id - SBI_MPXY_ATTR_MSGPROTO_ATTR_START)
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enum mpxy_msgprot_rpmi_attr_id {
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MPXY_MSGPROT_RPMI_ATTR_SERVICEGROUP_ID = SBI_MPXY_ATTR_MSGPROTO_ATTR_START,
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MPXY_MSGPROT_RPMI_ATTR_SERVICEGROUP_VERSION,
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MPXY_MSGPROT_RPMI_ATTR_IMPL_ID,
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MPXY_MSGPROT_RPMI_ATTR_IMPL_VERSION,
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MPXY_MSGPROT_RPMI_ATTR_MAX_ID
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};
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/**
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* MPXY message protocol attributes for RPMI
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* Order of attribute fields must follow the
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* attribute IDs in `enum mpxy_msgprot_rpmi_attr_id`
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*/
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struct mpxy_rpmi_channel_attrs {
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u32 servicegrp_id;
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u32 servicegrp_ver;
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u32 impl_id;
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u32 impl_ver;
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};
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/** Make sure all attributes are packed for direct memcpy */
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#define assert_field_offset(field, attr_offset) \
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_Static_assert( \
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((offsetof(struct mpxy_rpmi_channel_attrs, field)) / \
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sizeof(u32)) == (attr_offset - SBI_MPXY_ATTR_MSGPROTO_ATTR_START),\
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"field " #field \
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" from struct mpxy_rpmi_channel_attrs invalid offset, expected " #attr_offset)
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assert_field_offset(servicegrp_id, MPXY_MSGPROT_RPMI_ATTR_SERVICEGROUP_ID);
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assert_field_offset(servicegrp_ver, MPXY_MSGPROT_RPMI_ATTR_SERVICEGROUP_VERSION);
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assert_field_offset(impl_id, MPXY_MSGPROT_RPMI_ATTR_IMPL_ID);
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assert_field_offset(impl_ver, MPXY_MSGPROT_RPMI_ATTR_IMPL_VERSION);
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/** MPXY RPMI service data for each service group */
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struct mpxy_rpmi_service_data {
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u8 id;
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u32 min_tx_len;
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u32 max_tx_len;
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u32 min_rx_len;
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u32 max_rx_len;
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};
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/** MPXY RPMI mbox data for each service group */
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struct mpxy_rpmi_mbox_data {
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u32 servicegrp_id;
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u32 num_services;
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struct mpxy_rpmi_service_data *service_data;
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/** Transfer RPMI service group message */
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int (*xfer_group)(void *context, struct mbox_chan *chan,
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struct mbox_xfer *xfer);
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/** Setup RPMI service group context for MPXY */
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int (*setup_group)(void **context, struct mbox_chan *chan,
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const struct mpxy_rpmi_mbox_data *data);
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/** Cleanup RPMI service group context for MPXY */
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void (*cleanup_group)(void *context);
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};
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/** Common probe function for MPXY RPMI drivers */
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int mpxy_rpmi_mbox_init(const void *fdt, int nodeoff, const struct fdt_match *match);
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#endif
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