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mempool/octeontx2: fix shift calculation

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Shift is used to generate an 8-bit saturate value from the current
aura used count. The shift value should be derived from the log2 of
block count if it is greater than 256 else the shift should be 0.

Fixes: 7bcc47cbe2 ("mempool/octeontx2: add mempool alloc op")
Cc: stable@dpdk.org

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
This commit is contained in:
Pavan Nikhilesh 2021-06-15 00:54:24 +05:30 committed by Jerin Jacob
parent c93f222d45
commit 43d8940495
1 changed files with 4 additions and 2 deletions
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6
drivers/mempool/octeontx2/otx2_mempool_ops.c
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@ -611,7 +611,8 @@ npa_lf_aura_pool_pair_alloc(struct otx2_npa_lf *lf, const uint32_t block_size,
/* Update aura fields */
aura->pool_addr = pool_id;/* AF will translate to associated poolctx */
aura->ena = 1;
aura->shift = __builtin_clz(block_count) - 8;
aura->shift = rte_log2_u32(block_count);
aura->shift = aura->shift < 8 ? 0 : aura->shift - 8;
aura->limit = block_count;
aura->pool_caching = 1;
aura->err_int_ena = BIT(NPA_AURA_ERR_INT_AURA_ADD_OVER);
@ -626,7 +627,8 @@ npa_lf_aura_pool_pair_alloc(struct otx2_npa_lf *lf, const uint32_t block_size,
pool->ena = 1;
pool->buf_size = block_size / OTX2_ALIGN;
pool->stack_max_pages = stack_size;
pool->shift = __builtin_clz(block_count) - 8;
pool->shift = rte_log2_u32(block_count);
pool->shift = pool->shift < 8 ? 0 : pool->shift - 8;
pool->ptr_start = 0;
pool->ptr_end = ~0;
pool->stack_caching = 1;