Function i40e_init_asq

dpdk/drivers/net/i40e/base/i40e_adminq.c:375–423

* i40e_init_asq - main initialization routine for ASQ * @hw: pointer to the hardware structure * * This is the main initialization routine for the Admin Send Queue * Prior to calling this function, drivers *MUST* set the following fields * in the hw->aq structure: * - hw->aq.num_asq_entries * - hw->aq.arq_buf_size * * Do *NOT* hold the lock when calling this as the memory al

 *  called are not going to be atomic context safe
 **/
enum i40e_status_code i40e_init_asq(struct i40e_hw *hw)
{
	enum i40e_status_code ret_code = I40E_SUCCESS;

	if (hw->aq.asq.count > 0) {
		/* queue already initialized */
		ret_code = I40E_ERR_NOT_READY;
		goto init_adminq_exit;
	}

	/* verify input for valid configuration */
	if ((hw->aq.num_asq_entries == 0) ||
	    (hw->aq.asq_buf_size == 0)) {
		ret_code = I40E_ERR_CONFIG;
		goto init_adminq_exit;
	}

	hw->aq.asq.next_to_use = 0;
	hw->aq.asq.next_to_clean = 0;

	/* allocate the ring memory */
	ret_code = i40e_alloc_adminq_asq_ring(hw);
	if (ret_code != I40E_SUCCESS)
		goto init_adminq_exit;

	/* allocate buffers in the rings */
	ret_code = i40e_alloc_asq_bufs(hw);
	if (ret_code != I40E_SUCCESS)
		goto init_adminq_free_rings;

	/* initialize base registers */
	ret_code = i40e_config_asq_regs(hw);
	if (ret_code != I40E_SUCCESS)
		goto init_config_regs;

	/* success! */
	hw->aq.asq.count = hw->aq.num_asq_entries;
	goto init_adminq_exit;

init_adminq_free_rings:
	i40e_free_adminq_asq(hw);
	return ret_code;

init_config_regs:
	i40e_free_asq_bufs(hw);

init_adminq_exit:
	return ret_code;
}

/**
 *  i40e_init_arq - initialize ARQ