path: root/drivers/net/ethernet/intel/i40e/i40e_adminq.c

// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2018 Intel Corporation. */

#include "i40e_type.h"
#include "i40e_register.h"
#include "i40e_adminq.h"
#include "i40e_prototype.h"

static void i40e_resume_aq(struct i40e_hw *hw);

/**
 *  i40e_adminq_init_regs - Initialize AdminQ registers
 *  @hw: pointer to the hardware structure
 *
 *  This assumes the alloc_asq and alloc_arq functions have already been called
 **/
static void i40e_adminq_init_regs(struct i40e_hw *hw)
{
	/* set head and tail registers in our local struct */
	if (i40e_is_vf(hw)) {
		hw->aq.asq.tail = I40E_VF_ATQT1;
		hw->aq.asq.head = I40E_VF_ATQH1;
		hw->aq.asq.len  = I40E_VF_ATQLEN1;
		hw->aq.asq.bal  = I40E_VF_ATQBAL1;
		hw->aq.asq.bah  = I40E_VF_ATQBAH1;
		hw->aq.arq.tail = I40E_VF_ARQT1;
		hw->aq.arq.head = I40E_VF_ARQH1;
		hw->aq.arq.len  = I40E_VF_ARQLEN1;
		hw->aq.arq.bal  = I40E_VF_ARQBAL1;
		hw->aq.arq.bah  = I40E_VF_ARQBAH1;
	} else {
		hw->aq.asq.tail = I40E_PF_ATQT;
		hw->aq.asq.head = I40E_PF_ATQH;
		hw->aq.asq.len  = I40E_PF_ATQLEN;
		hw->aq.asq.bal  = I40E_PF_ATQBAL;
		hw->aq.asq.bah  = I40E_PF_ATQBAH;
		hw->aq.arq.tail = I40E_PF_ARQT;
		hw->aq.arq.head = I40E_PF_ARQH;
		hw->aq.arq.len  = I40E_PF_ARQLEN;
		hw->aq.arq.bal  = I40E_PF_ARQBAL;
		hw->aq.arq.bah  = I40E_PF_ARQBAH;
	}
}

/**
 *  i40e_alloc_adminq_asq_ring - Allocate Admin Queue send rings
 *  @hw: pointer to the hardware structure
 **/
static int i40e_alloc_adminq_asq_ring(struct i40e_hw *hw)
{
	int ret_code;

	ret_code = i40e_allocate_dma_mem(hw, &hw->aq.asq.desc_buf,
					 i40e_mem_atq_ring,
					 (hw->aq.num_asq_entries *
					 sizeof(struct i40e_aq_desc)),
					 I40E_ADMINQ_DESC_ALIGNMENT);
	if (ret_code)
		return ret_code;

	ret_code = i40e_allocate_virt_mem(hw, &hw->aq.asq.cmd_buf,
					  (hw->aq.num_asq_entries *
					  sizeof(struct i40e_asq_cmd_details)));
	if (ret_code) {
		i40e_free_dma_mem(hw, &hw->aq.asq.desc_buf);
		return ret_code;
	}

	return ret_code;
}

/**
 *  i40e_alloc_adminq_arq_ring - Allocate Admin Queue receive rings
 *  @hw: pointer to the hardware structure
 **/
static int i40e_alloc_adminq_arq_ring(struct i40e_hw *hw)
{
	int ret_code;

	ret_code = i40e_allocate_dma_mem(hw, &hw->aq.arq.desc_buf,
					 i40e_mem_arq_ring,
					 (hw->aq.num_arq_entries *
					 sizeof(struct i40e_aq_desc)),
					 I40E_ADMINQ_DESC_ALIGNMENT);

	return ret_code;
}

/**
 *  i40e_free_adminq_asq - Free Admin Queue send rings
 *  @hw: pointer to the hardware structure
 *
 *  This assumes the posted send buffers have already been cleaned
 *  and de-allocated
 **/
static void i40e_free_adminq_asq(struct i40e_hw *hw)
{
	i40e_free_dma_mem(hw, &hw->aq.asq.desc_buf);
}

/**
 *  i40e_free_adminq_arq - Free Admin Queue receive rings
 *  @hw: pointer to the hardware structure
 *
 *  This assumes the posted receive buffers have already been cleaned
 *  and de-allocated
 **/
static void i40e_free_adminq_arq(struct i40e_hw *hw)
{
	i40e_free_dma_mem(hw, &hw->aq.arq.desc_buf);
}

/**
 *  i40e_alloc_arq_bufs - Allocate pre-posted buffers for the receive queue
 *  @hw: pointer to the hardware structure
 **/
static int i40e_alloc_arq_bufs(struct i40e_hw *hw)
{
	struct i40e_aq_desc *desc;
	struct i40e_dma_mem *bi;
	int ret_code;
	int i;

	/* We'll be allocating the buffer info memory fir