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d14340cb31
Instead of having one common FDT MPXY RPMI mailbox client drivers for various RPMI service groups, split this driver into two parts: 1) Common MPXY RPMI mailbox client library 2) MPXY driver for RPMI clock service group The above split enables having a separate MPXY driver for each RPMI clock service group and #1 (above) will allow code sharing between various MPXY RPMI drivers. Signed-off-by: Anup Patel <apatel@ventanamicro.com>
72 lines
2.0 KiB
C
72 lines
2.0 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/rpmi_msgprot.h>
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#include <sbi_utils/mpxy/fdt_mpxy.h>
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#define MPXY_RPMI_MAJOR_VER (1)
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#define MPXY_RPMI_MINOR_VER (0)
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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_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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};
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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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/** 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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u32 notifications_support;
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struct mpxy_rpmi_service_data *service_data;
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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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