mirror of
https://github.com/riscv-software-src/opensbi.git
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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
/*
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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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#include <sbi/sbi_bitmap.h>
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#include <sbi/sbi_domain.h>
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#include <sbi/sbi_error.h>
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#include <sbi/sbi_heap.h>
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static SBI_LIST_HEAD(data_list);
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static DECLARE_BITMAP(data_idx_bmap, SBI_DOMAIN_MAX_DATA_PTRS);
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void *sbi_domain_data_ptr(struct sbi_domain *dom, struct sbi_domain_data *data)
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{
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if (dom && data && data->data_idx < SBI_DOMAIN_MAX_DATA_PTRS)
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return dom->data_priv.idx_to_data_ptr[data->data_idx];
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return NULL;
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}
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static int domain_setup_data_one(struct sbi_domain *dom,
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struct sbi_domain_data *data)
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{
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struct sbi_domain_data_priv *priv = &dom->data_priv;
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void *data_ptr;
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int rc;
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if (priv->idx_to_data_ptr[data->data_idx])
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return SBI_EALREADY;
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data_ptr = sbi_zalloc(data->data_size);
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if (!data_ptr) {
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sbi_domain_cleanup_data(dom);
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return SBI_ENOMEM;
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}
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if (data->data_setup) {
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rc = data->data_setup(dom, data, data_ptr);
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if (rc) {
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sbi_free(data_ptr);
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return rc;
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}
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}
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priv->idx_to_data_ptr[data->data_idx] = data_ptr;
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return 0;
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}
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static void domain_cleanup_data_one(struct sbi_domain *dom,
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struct sbi_domain_data *data)
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{
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struct sbi_domain_data_priv *priv = &dom->data_priv;
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void *data_ptr;
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data_ptr = priv->idx_to_data_ptr[data->data_idx];
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if (!data_ptr)
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return;
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if (data->data_cleanup)
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data->data_cleanup(dom, data, data_ptr);
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sbi_free(data_ptr);
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priv->idx_to_data_ptr[data->data_idx] = NULL;
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}
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int sbi_domain_setup_data(struct sbi_domain *dom)
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{
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struct sbi_domain_data *data;
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int rc;
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if (!dom)
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return SBI_EINVAL;
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sbi_list_for_each_entry(data, &data_list, head) {
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rc = domain_setup_data_one(dom, data);
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if (rc) {
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sbi_domain_cleanup_data(dom);
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return rc;
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}
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}
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return 0;
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}
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void sbi_domain_cleanup_data(struct sbi_domain *dom)
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{
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struct sbi_domain_data *data;
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if (!dom)
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return;
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sbi_list_for_each_entry(data, &data_list, head)
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domain_cleanup_data_one(dom, data);
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}
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int sbi_domain_register_data(struct sbi_domain_data *data)
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{
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struct sbi_domain *dom;
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u32 data_idx;
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int rc;
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if (!data || !data->data_size)
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return SBI_EINVAL;
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for (data_idx = 0; data_idx < SBI_DOMAIN_MAX_DATA_PTRS; data_idx++) {
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if (!bitmap_test(data_idx_bmap, data_idx))
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break;
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}
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if (SBI_DOMAIN_MAX_DATA_PTRS <= data_idx)
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return SBI_ENOSPC;
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bitmap_set(data_idx_bmap, data_idx, 1);
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data->data_idx = data_idx;
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sbi_list_add_tail(&data->head, &data_list);
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sbi_domain_for_each(dom) {
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rc = domain_setup_data_one(dom, data);
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if (rc) {
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sbi_domain_unregister_data(data);
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return rc;
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}
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}
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return 0;
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}
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void sbi_domain_unregister_data(struct sbi_domain_data *data)
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{
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struct sbi_domain *dom;
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sbi_domain_for_each(dom)
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domain_cleanup_data_one(dom, data);
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sbi_list_del(&data->head);
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bitmap_clear(data_idx_bmap, data->data_idx, 1);
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}
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