mirror of
https://github.com/riscv-software-src/opensbi.git
synced 2025-08-24 15:31:22 +01:00
81d79913a0
Different parts of OpenSBI require their own per-domain data so introduce domain data (or sbi_domain_data) which can be registered by any part of OpenSBI. Using the domain data, the domain framework will create a data pointer for every domain which can be used to maintain some per-domain state. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Yu Chien Peter Lin <peterlin@andestech.com>
139 lines
2.8 KiB
C
139 lines
2.8 KiB
C
/*
|
|
* 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);
|
|
}
|