110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/*
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* Copyright(c) 2012-2022 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "ocf_priv.h"
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#include "ocf_cache_priv.h"
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#include "utils/utils_cache_line.h"
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static inline ocf_cache_line_t ocf_atomic_addr2line(
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struct ocf_cache *cache, uint64_t addr)
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{
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addr -= cache->device->metadata_offset;
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return ocf_bytes_2_lines(cache, addr);
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}
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static inline uint8_t ocf_atomic_addr2pos(struct ocf_cache *cache,
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uint64_t addr)
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{
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addr -= cache->device->metadata_offset;
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addr = BYTES_TO_SECTORS(addr);
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addr %= ocf_line_sectors(cache);
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return addr;
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}
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int ocf_metadata_get_atomic_entry(ocf_cache_t cache,
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uint64_t addr, struct ocf_atomic_metadata *entry)
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{
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OCF_CHECK_NULL(cache);
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OCF_CHECK_NULL(entry);
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if (addr > ocf_volume_get_length(&cache->device->volume))
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return -OCF_ERR_INVAL;
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if (addr < cache->device->metadata_offset) {
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/* Metadata IO of OCF */
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ENV_BUG_ON(env_memset(entry, sizeof(*entry), 0));
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} else {
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ocf_cache_line_t line = ocf_atomic_addr2line(cache, addr);
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uint8_t pos = ocf_atomic_addr2pos(cache, addr);
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ocf_core_id_t core_id = OCF_CORE_MAX;
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ocf_core_t core;
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uint64_t core_line = 0;
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ocf_metadata_get_core_info(cache, line, &core_id, &core_line);
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core = ocf_cache_get_core(cache, core_id);
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entry->core_seq_no = core->conf_meta->seq_no;
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entry->core_line = core_line;
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entry->valid = metadata_test_valid_one(cache, line, pos);
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entry->dirty = metadata_test_dirty_one(cache, line, pos);
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}
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return 0;
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}
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int ocf_metadata_check_invalid_before(ocf_cache_t cache, uint64_t addr)
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{
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ocf_cache_line_t line;
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uint8_t pos;
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int i;
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OCF_CHECK_NULL(cache);
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if (ocf_cache_is_standby(cache))
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return -OCF_ERR_CACHE_STANDBY;
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line = ocf_atomic_addr2line(cache, addr);
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pos = ocf_atomic_addr2pos(cache, addr);
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if (!pos || addr < cache->device->metadata_offset)
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return 0;
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for (i = 0; i < pos; i++) {
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if (metadata_test_valid_one(cache, line, i))
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return 0;
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}
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return i;
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}
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int ocf_metadata_check_invalid_after(ocf_cache_t cache, uint64_t addr,
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uint32_t bytes)
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{
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ocf_cache_line_t line;
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uint8_t pos;
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int i, count = 0;
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OCF_CHECK_NULL(cache);
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if (ocf_cache_is_standby(cache))
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return -OCF_ERR_CACHE_STANDBY;
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line = ocf_atomic_addr2line(cache, addr + bytes);
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pos = ocf_atomic_addr2pos(cache, addr + bytes);
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if (!pos || addr < cache->device->metadata_offset)
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return 0;
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for (i = pos; i < ocf_line_sectors(cache); i++) {
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if (metadata_test_valid_one(cache, line, i))
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return 0;
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count++;
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}
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return count;
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}
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