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crypto/qat: optimize ADF modulo function

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Signed-off-by: Tomasz Jozwiak <tomaszx.jozwiak@intel.com>
Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
This commit is contained in:
Fiona Trahe 2018-06-13 14:14:17 +02:00 committed by Pablo de Lara
parent 26c198ff34
commit 93dbbf6451
2 changed files with 9 additions and 12 deletions
drivers/crypto/qat
qat_qp.cqat_qp.h

19
drivers/crypto/qat/qat_qp.c

@ -376,7 +376,7 @@ qat_queue_create(struct qat_pci_device *qat_dev, struct qat_queue *queue,
queue->max_inflights = ADF_MAX_INFLIGHTS(queue->queue_size,
ADF_BYTES_TO_MSG_SIZE(desc_size));
queue->modulo = ADF_RING_SIZE_MODULO(queue->queue_size);
queue->modulo_mask = (1 << ADF_RING_SIZE_MODULO(queue->queue_size)) - 1;
if (queue->max_inflights < 2) {
PMD_DRV_LOG(ERR, "Invalid num inflights");
@ -401,11 +401,11 @@ qat_queue_create(struct qat_pci_device *qat_dev, struct qat_queue *queue,
queue->hw_queue_number, queue_base);
PMD_DRV_LOG(DEBUG, "RING: Name:%s, size in CSR: %u, in bytes %u,"
" nb msgs %u, msg_size %u, max_inflights %u modulo %u",
" nb msgs %u, msg_size %u, max_inflights %u modulo mask %u",
queue->memz_name,
queue->queue_size, queue_size_bytes,
qp_conf->nb_descriptors, desc_size,
queue->max_inflights, queue->modulo);
queue->max_inflights, queue->modulo_mask);
return 0;
@ -494,13 +494,9 @@ static void adf_configure_queues(struct qat_qp *qp)
queue->hw_queue_number, queue_config);
}
static inline uint32_t adf_modulo(uint32_t data, uint32_t shift)
static inline uint32_t adf_modulo(uint32_t data, uint32_t modulo_mask)
{
uint32_t div = data >> shift;
uint32_t mult = div << shift;
return data - mult;
return data & modulo_mask;
}
static inline void
@ -584,7 +580,7 @@ qat_enqueue_op_burst(void *qp, void **ops, uint16_t nb_ops)
goto kick_tail;
}
tail = adf_modulo(tail + queue->msg_size, queue->modulo);
tail = adf_modulo(tail + queue->msg_size, queue->modulo_mask);
ops++;
nb_ops_sent++;
}
@ -620,7 +616,8 @@ qat_dequeue_op_burst(void *qp, void **ops, uint16_t nb_ops)
tmp_qp->op_cookies[head / rx_queue->msg_size],
tmp_qp->qat_dev_gen);
head = adf_modulo(head + rx_queue->msg_size, rx_queue->modulo);
head = adf_modulo(head + rx_queue->msg_size,
rx_queue->modulo_mask);
resp_msg = (uint8_t *)rx_queue->base_addr + head;
ops++;

2
drivers/crypto/qat/qat_qp.h

@ -59,7 +59,7 @@ struct qat_queue {
rte_iova_t base_phys_addr; /* Queue physical address */
uint32_t head; /* Shadow copy of the head */
uint32_t tail; /* Shadow copy of the tail */
uint32_t modulo;
uint32_t modulo_mask;
uint32_t msg_size;
uint16_t max_inflights;
uint32_t queue_size;