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lib: utils: Split the FDT MPXY RPMI mailbox client into two parts

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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>
This commit is contained in:
Anup Patel
2025-01-11 14:38:34 +05:30
committed by Anup Patel
parent 5ce121b7a1
commit d14340cb31
6 changed files with 191 additions and 154 deletions
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71
include/sbi_utils/mpxy/fdt_mpxy_rpmi_mbox.h Normal file
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@@ -0,0 +1,71 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2024 Ventana Micro Systems Inc.
*
* Authors:
* Anup Patel <apatel@ventanamicro.com>
*/
#ifndef __FDT_MPXY_RPMI_MBOX_H__
#define __FDT_MPXY_RPMI_MBOX_H__
#include <sbi/sbi_types.h>
#include <sbi/sbi_mpxy.h>
#include <sbi_utils/mailbox/rpmi_msgprot.h>
#include <sbi_utils/mpxy/fdt_mpxy.h>
#define MPXY_RPMI_MAJOR_VER (1)
#define MPXY_RPMI_MINOR_VER (0)
/** Convert the mpxy attribute ID to attribute array index */
#define attr_id2index(attr_id) (attr_id - SBI_MPXY_ATTR_MSGPROTO_ATTR_START)
enum mpxy_msgprot_rpmi_attr_id {
MPXY_MSGPROT_RPMI_ATTR_SERVICEGROUP_ID = SBI_MPXY_ATTR_MSGPROTO_ATTR_START,
MPXY_MSGPROT_RPMI_ATTR_SERVICEGROUP_VERSION,
MPXY_MSGPROT_RPMI_ATTR_MAX_ID,
};
/**
* MPXY message protocol attributes for RPMI
* Order of attribute fields must follow the
* attribute IDs in `enum mpxy_msgprot_rpmi_attr_id`
*/
struct mpxy_rpmi_channel_attrs {
u32 servicegrp_id;
u32 servicegrp_ver;
};
/** Make sure all attributes are packed for direct memcpy */
#define assert_field_offset(field, attr_offset) \
_Static_assert( \
((offsetof(struct mpxy_rpmi_channel_attrs, field)) / \
sizeof(u32)) == (attr_offset - SBI_MPXY_ATTR_MSGPROTO_ATTR_START),\
"field " #field \
" from struct mpxy_rpmi_channel_attrs invalid offset, expected " #attr_offset)
assert_field_offset(servicegrp_id, MPXY_MSGPROT_RPMI_ATTR_SERVICEGROUP_ID);
assert_field_offset(servicegrp_ver, MPXY_MSGPROT_RPMI_ATTR_SERVICEGROUP_VERSION);
/** MPXY RPMI service data for each service group */
struct mpxy_rpmi_service_data {
u8 id;
u32 min_tx_len;
u32 max_tx_len;
u32 min_rx_len;
u32 max_rx_len;
};
/** MPXY RPMI mbox data for each service group */
struct mpxy_rpmi_mbox_data {
u32 servicegrp_id;
u32 num_services;
u32 notifications_support;
struct mpxy_rpmi_service_data *service_data;
};
/** Common probe function for MPXY RPMI drivers */
int mpxy_rpmi_mbox_init(const void *fdt, int nodeoff, const struct fdt_match *match);
#endif