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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2024 Ventana Micro Systems Inc.
*/
#include <sbi/sbi_bitmap.h>
#include <sbi/sbi_domain.h>
#include <sbi/sbi_error.h>
#include <sbi/sbi_heap.h>
static SBI_LIST_HEAD(data_list);
static DECLARE_BITMAP(data_idx_bmap, SBI_DOMAIN_MAX_DATA_PTRS);
void *sbi_domain_data_ptr(struct sbi_domain *dom, struct sbi_domain_data *data)
{
if (dom && data && data->data_idx < SBI_DOMAIN_MAX_DATA_PTRS)
return dom->data_priv.idx_to_data_ptr[data->data_idx];
return NULL;
}
static int domain_setup_data_one(struct sbi_domain *dom,
struct sbi_domain_data *data)
{
struct sbi_domain_data_priv *priv = &dom->data_priv;
void *data_ptr;
int rc;
if (priv->idx_to_data_ptr[data->data_idx])
return SBI_EALREADY;
data_ptr = sbi_zalloc(data->data_size);
if (!data_ptr) {
sbi_domain_cleanup_data(dom);
return SBI_ENOMEM;
}
if (data->data_setup) {
rc = data->data_setup(dom, data, data_ptr);
if (rc) {
sbi_free(data_ptr);
return rc;
}
}
priv->idx_to_data_ptr[data->data_idx] = data_ptr;
return 0;
}
static void domain_cleanup_data_one(struct sbi_domain *dom,
struct sbi_domain_data *data)
{
struct sbi_domain_data_priv *priv = &dom->data_priv;
void *data_ptr;
data_ptr = priv->idx_to_data_ptr[data->data_idx];
if (!data_ptr)
return;
if (data->data_cleanup)
data->data_cleanup(dom, data, data_ptr);
sbi_free(data_ptr);
priv->idx_to_data_ptr[data->data_idx] = NULL;
}
int sbi_domain_setup_data(struct sbi_domain *dom)
{
struct sbi_domain_data *data;
int rc;
if (!dom)
return SBI_EINVAL;
sbi_list_for_each_entry(data, &data_list, head) {
rc = domain_setup_data_one(dom, data);
if (rc) {
sbi_domain_cleanup_data(dom);
return rc;
}
}
return 0;
}
void sbi_domain_cleanup_data(struct sbi_domain *dom)
{
struct sbi_domain_data *data;
if (!dom)
return;
sbi_list_for_each_entry(data, &data_list, head)
domain_cleanup_data_one(dom, data);
}
int sbi_domain_register_data(struct sbi_domain_data *data)
{
struct sbi_domain *dom;
u32 data_idx;
int rc;
if (!data || !data->data_size)
return SBI_EINVAL;
for (data_idx = 0; data_idx < SBI_DOMAIN_MAX_DATA_PTRS; data_idx++) {
if (!bitmap_test(data_idx_bmap, data_idx))
break;
}
if (SBI_DOMAIN_MAX_DATA_PTRS <= data_idx)
return SBI_ENOSPC;
bitmap_set(data_idx_bmap, data_idx, 1);
data->data_idx = data_idx;
sbi_list_add_tail(&data->head, &data_list);
sbi_domain_for_each(dom) {
rc = domain_setup_data_one(dom, data);
if (rc) {
sbi_domain_unregister_data(data);
return rc;
}
}
return 0;
}
void sbi_domain_unregister_data(struct sbi_domain_data *data)
{
struct sbi_domain *dom;
sbi_domain_for_each(dom)
domain_cleanup_data_one(dom, data);
sbi_list_del(&data->head);
bitmap_clear(data_idx_bmap, data->data_idx, 1);
}
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