1036 lines
28 KiB
C
1036 lines
28 KiB
C
/*******************************************************************************
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*
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* Intel Ethernet Controller XL710 Family Linux Driver
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* Copyright(c) 2013 - 2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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******************************************************************************/
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#include "i40e_status.h"
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#include "i40e_type.h"
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#include "i40e_register.h"
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#include "i40e_adminq.h"
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#include "i40e_prototype.h"
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static void i40e_resume_aq(struct i40e_hw *hw);
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/**
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* i40e_adminq_init_regs - Initialize AdminQ registers
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* @hw: pointer to the hardware structure
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*
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* This assumes the alloc_asq and alloc_arq functions have already been called
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**/
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static void i40e_adminq_init_regs(struct i40e_hw *hw)
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{
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/* set head and tail registers in our local struct */
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if (i40e_is_vf(hw)) {
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hw->aq.asq.tail = I40E_VF_ATQT1;
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hw->aq.asq.head = I40E_VF_ATQH1;
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hw->aq.asq.len = I40E_VF_ATQLEN1;
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hw->aq.asq.bal = I40E_VF_ATQBAL1;
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hw->aq.asq.bah = I40E_VF_ATQBAH1;
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hw->aq.arq.tail = I40E_VF_ARQT1;
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hw->aq.arq.head = I40E_VF_ARQH1;
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hw->aq.arq.len = I40E_VF_ARQLEN1;
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hw->aq.arq.bal = I40E_VF_ARQBAL1;
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hw->aq.arq.bah = I40E_VF_ARQBAH1;
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} else {
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hw->aq.asq.tail = I40E_PF_ATQT;
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hw->aq.asq.head = I40E_PF_ATQH;
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hw->aq.asq.len = I40E_PF_ATQLEN;
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hw->aq.asq.bal = I40E_PF_ATQBAL;
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hw->aq.asq.bah = I40E_PF_ATQBAH;
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hw->aq.arq.tail = I40E_PF_ARQT;
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hw->aq.arq.head = I40E_PF_ARQH;
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hw->aq.arq.len = I40E_PF_ARQLEN;
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hw->aq.arq.bal = I40E_PF_ARQBAL;
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hw->aq.arq.bah = I40E_PF_ARQBAH;
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}
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}
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/**
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* i40e_alloc_adminq_asq_ring - Allocate Admin Queue send rings
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* @hw: pointer to the hardware structure
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**/
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static i40e_status i40e_alloc_adminq_asq_ring(struct i40e_hw *hw)
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{
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i40e_status ret_code;
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ret_code = i40e_allocate_dma_mem(hw, &hw->aq.asq.desc_buf,
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i40e_mem_atq_ring,
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(hw->aq.num_asq_entries *
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sizeof(struct i40e_aq_desc)),
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I40E_ADMINQ_DESC_ALIGNMENT);
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if (ret_code)
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return ret_code;
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ret_code = i40e_allocate_virt_mem(hw, &hw->aq.asq.cmd_buf,
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(hw->aq.num_asq_entries *
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sizeof(struct i40e_asq_cmd_details)));
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if (ret_code) {
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i40e_free_dma_mem(hw, &hw->aq.asq.desc_buf);
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return ret_code;
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}
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return ret_code;
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}
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/**
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* i40e_alloc_adminq_arq_ring - Allocate Admin Queue receive rings
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* @hw: pointer to the hardware structure
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**/
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static i40e_status i40e_alloc_adminq_arq_ring(struct i40e_hw *hw)
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{
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i40e_status ret_code;
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ret_code = i40e_allocate_dma_mem(hw, &hw->aq.arq.desc_buf,
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i40e_mem_arq_ring,
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(hw->aq.num_arq_entries *
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sizeof(struct i40e_aq_desc)),
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I40E_ADMINQ_DESC_ALIGNMENT);
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return ret_code;
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}
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/**
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* i40e_free_adminq_asq - Free Admin Queue send rings
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* @hw: pointer to the hardware structure
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*
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* This assumes the posted send buffers have already been cleaned
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* and de-allocated
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**/
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static void i40e_free_adminq_asq(struct i40e_hw *hw)
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{
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i40e_free_dma_mem(hw, &hw->aq.asq.desc_buf);
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}
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/**
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* i40e_free_adminq_arq - Free Admin Queue receive rings
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* @hw: pointer to the hardware structure
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*
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* This assumes the posted receive buffers have already been cleaned
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* and de-allocated
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**/
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static void i40e_free_adminq_arq(struct i40e_hw *hw)
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{
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i40e_free_dma_mem(hw, &hw->aq.arq.desc_buf);
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}
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/**
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* i40e_alloc_arq_bufs - Allocate pre-posted buffers for the receive queue
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* @hw: pointer to the hardware structure
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**/
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static i40e_status i40e_alloc_arq_bufs(struct i40e_hw *hw)
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{
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i40e_status ret_code;
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struct i40e_aq_desc *desc;
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struct i40e_dma_mem *bi;
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int i;
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/* We'll be allocating the buffer info memory first, then we can
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* allocate the mapped buffers for the event processing
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*/
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/* buffer_info structures do not need alignment */
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ret_code = i40e_allocate_virt_mem(hw, &hw->aq.arq.dma_head,
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(hw->aq.num_arq_entries * sizeof(struct i40e_dma_mem)));
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if (ret_code)
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goto alloc_arq_bufs;
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hw->aq.arq.r.arq_bi = (struct i40e_dma_mem *)hw->aq.arq.dma_head.va;
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/* allocate the mapped buffers */
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for (i = 0; i < hw->aq.num_arq_entries; i++) {
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bi = &hw->aq.arq.r.arq_bi[i];
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ret_code = i40e_allocate_dma_mem(hw, bi,
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i40e_mem_arq_buf,
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hw->aq.arq_buf_size,
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I40E_ADMINQ_DESC_ALIGNMENT);
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if (ret_code)
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goto unwind_alloc_arq_bufs;
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/* now configure the descriptors for use */
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desc = I40E_ADMINQ_DESC(hw->aq.arq, i);
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desc->flags = cpu_to_le16(I40E_AQ_FLAG_BUF);
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if (hw->aq.arq_buf_size > I40E_AQ_LARGE_BUF)
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desc->flags |= cpu_to_le16(I40E_AQ_FLAG_LB);
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desc->opcode = 0;
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/* This is in accordance with Admin queue design, there is no
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* register for buffer size configuration
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*/
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desc->datalen = cpu_to_le16((u16)bi->size);
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desc->retval = 0;
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desc->cookie_high = 0;
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desc->cookie_low = 0;
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desc->params.external.addr_high =
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cpu_to_le32(upper_32_bits(bi->pa));
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desc->params.external.addr_low =
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cpu_to_le32(lower_32_bits(bi->pa));
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desc->params.external.param0 = 0;
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desc->params.external.param1 = 0;
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}
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alloc_arq_bufs:
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return ret_code;
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unwind_alloc_arq_bufs:
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/* don't try to free the one that failed... */
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i--;
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for (; i >= 0; i--)
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i40e_free_dma_mem(hw, &hw->aq.arq.r.arq_bi[i]);
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i40e_free_virt_mem(hw, &hw->aq.arq.dma_head);
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return ret_code;
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}
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/**
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* i40e_alloc_asq_bufs - Allocate empty buffer structs for the send queue
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* @hw: pointer to the hardware structure
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**/
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static i40e_status i40e_alloc_asq_bufs(struct i40e_hw *hw)
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{
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i40e_status ret_code;
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struct i40e_dma_mem *bi;
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int i;
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/* No mapped memory needed yet, just the buffer info structures */
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ret_code = i40e_allocate_virt_mem(hw, &hw->aq.asq.dma_head,
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(hw->aq.num_asq_entries * sizeof(struct i40e_dma_mem)));
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if (ret_code)
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goto alloc_asq_bufs;
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hw->aq.asq.r.asq_bi = (struct i40e_dma_mem *)hw->aq.asq.dma_head.va;
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/* allocate the mapped buffers */
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for (i = 0; i < hw->aq.num_asq_entries; i++) {
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bi = &hw->aq.asq.r.asq_bi[i];
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ret_code = i40e_allocate_dma_mem(hw, bi,
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i40e_mem_asq_buf,
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hw->aq.asq_buf_size,
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I40E_ADMINQ_DESC_ALIGNMENT);
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if (ret_code)
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goto unwind_alloc_asq_bufs;
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}
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alloc_asq_bufs:
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return ret_code;
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unwind_alloc_asq_bufs:
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/* don't try to free the one that failed... */
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i--;
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for (; i >= 0; i--)
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i40e_free_dma_mem(hw, &hw->aq.asq.r.asq_bi[i]);
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i40e_free_virt_mem(hw, &hw->aq.asq.dma_head);
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return ret_code;
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}
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/**
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* i40e_free_arq_bufs - Free receive queue buffer info elements
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* @hw: pointer to the hardware structure
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**/
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static void i40e_free_arq_bufs(struct i40e_hw *hw)
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{
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int i;
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/* free descriptors */
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for (i = 0; i < hw->aq.num_arq_entries; i++)
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i40e_free_dma_mem(hw, &hw->aq.arq.r.arq_bi[i]);
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/* free the descriptor memory */
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i40e_free_dma_mem(hw, &hw->aq.arq.desc_buf);
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/* free the dma header */
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i40e_free_virt_mem(hw, &hw->aq.arq.dma_head);
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}
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/**
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* i40e_free_asq_bufs - Free send queue buffer info elements
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* @hw: pointer to the hardware structure
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**/
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static void i40e_free_asq_bufs(struct i40e_hw *hw)
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{
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int i;
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/* only unmap if the address is non-NULL */
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for (i = 0; i < hw->aq.num_asq_entries; i++)
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if (hw->aq.asq.r.asq_bi[i].pa)
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i40e_free_dma_mem(hw, &hw->aq.asq.r.asq_bi[i]);
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/* free the buffer info list */
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i40e_free_virt_mem(hw, &hw->aq.asq.cmd_buf);
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/* free the descriptor memory */
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i40e_free_dma_mem(hw, &hw->aq.asq.desc_buf);
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/* free the dma header */
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i40e_free_virt_mem(hw, &hw->aq.asq.dma_head);
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}
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/**
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* i40e_config_asq_regs - configure ASQ registers
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* @hw: pointer to the hardware structure
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*
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* Configure base address and length registers for the transmit queue
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**/
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static i40e_status i40e_config_asq_regs(struct i40e_hw *hw)
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{
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i40e_status ret_code = 0;
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u32 reg = 0;
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/* Clear Head and Tail */
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wr32(hw, hw->aq.asq.head, 0);
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wr32(hw, hw->aq.asq.tail, 0);
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/* set starting point */
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wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
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I40E_PF_ATQLEN_ATQENABLE_MASK));
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wr32(hw, hw->aq.asq.bal, lower_32_bits(hw->aq.asq.desc_buf.pa));
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wr32(hw, hw->aq.asq.bah, upper_32_bits(hw->aq.asq.desc_buf.pa));
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/* Check one register to verify that config was applied */
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reg = rd32(hw, hw->aq.asq.bal);
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if (reg != lower_32_bits(hw->aq.asq.desc_buf.pa))
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ret_code = I40E_ERR_ADMIN_QUEUE_ERROR;
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return ret_code;
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}
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/**
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* i40e_config_arq_regs - ARQ register configuration
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* @hw: pointer to the hardware structure
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*
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* Configure base address and length registers for the receive (event queue)
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**/
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static i40e_status i40e_config_arq_regs(struct i40e_hw *hw)
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{
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i40e_status ret_code = 0;
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u32 reg = 0;
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/* Clear Head and Tail */
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wr32(hw, hw->aq.arq.head, 0);
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wr32(hw, hw->aq.arq.tail, 0);
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/* set starting point */
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wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
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I40E_PF_ARQLEN_ARQENABLE_MASK));
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wr32(hw, hw->aq.arq.bal, lower_32_bits(hw->aq.arq.desc_buf.pa));
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wr32(hw, hw->aq.arq.bah, upper_32_bits(hw->aq.arq.desc_buf.pa));
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/* Update tail in the HW to post pre-allocated buffers */
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wr32(hw, hw->aq.arq.tail, hw->aq.num_arq_entries - 1);
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/* Check one register to verify that config was applied */
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reg = rd32(hw, hw->aq.arq.bal);
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if (reg != lower_32_bits(hw->aq.arq.desc_buf.pa))
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ret_code = I40E_ERR_ADMIN_QUEUE_ERROR;
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return ret_code;
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}
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/**
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* i40e_init_asq - main initialization routine for ASQ
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* @hw: pointer to the hardware structure
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*
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* This is the main initialization routine for the Admin Send Queue
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* Prior to calling this function, drivers *MUST* set the following fields
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* in the hw->aq structure:
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* - hw->aq.num_asq_entries
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* - hw->aq.arq_buf_size
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*
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* Do *NOT* hold the lock when calling this as the memory allocation routines
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* called are not going to be atomic context safe
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**/
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static i40e_status i40e_init_asq(struct i40e_hw *hw)
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{
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i40e_status ret_code = 0;
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if (hw->aq.asq.count > 0) {
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/* queue already initialized */
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ret_code = I40E_ERR_NOT_READY;
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goto init_adminq_exit;
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}
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/* verify input for valid configuration */
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if ((hw->aq.num_asq_entries == 0) ||
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(hw->aq.asq_buf_size == 0)) {
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ret_code = I40E_ERR_CONFIG;
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goto init_adminq_exit;
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}
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hw->aq.asq.next_to_use = 0;
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hw->aq.asq.next_to_clean = 0;
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/* allocate the ring memory */
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ret_code = i40e_alloc_adminq_asq_ring(hw);
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if (ret_code)
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goto init_adminq_exit;
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/* allocate buffers in the rings */
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ret_code = i40e_alloc_asq_bufs(hw);
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if (ret_code)
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goto init_adminq_free_rings;
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/* initialize base registers */
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ret_code = i40e_config_asq_regs(hw);
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if (ret_code)
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goto init_adminq_free_rings;
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/* success! */
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hw->aq.asq.count = hw->aq.num_asq_entries;
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goto init_adminq_exit;
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init_adminq_free_rings:
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i40e_free_adminq_asq(hw);
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init_adminq_exit:
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return ret_code;
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}
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/**
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* i40e_init_arq - initialize ARQ
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* @hw: pointer to the hardware structure
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*
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* The main initialization routine for the Admin Receive (Event) Queue.
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* Prior to calling this function, drivers *MUST* set the following fields
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* in the hw->aq structure:
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* - hw->aq.num_asq_entries
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* - hw->aq.arq_buf_size
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*
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* Do *NOT* hold the lock when calling this as the memory allocation routines
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* called are not going to be atomic context safe
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**/
|
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static i40e_status i40e_init_arq(struct i40e_hw *hw)
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{
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i40e_status ret_code = 0;
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if (hw->aq.arq.count > 0) {
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/* queue already initialized */
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ret_code = I40E_ERR_NOT_READY;
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goto init_adminq_exit;
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}
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/* verify input for valid configuration */
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if ((hw->aq.num_arq_entries == 0) ||
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(hw->aq.arq_buf_size == 0)) {
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ret_code = I40E_ERR_CONFIG;
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goto init_adminq_exit;
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}
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hw->aq.arq.next_to_use = 0;
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hw->aq.arq.next_to_clean = 0;
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/* allocate the ring memory */
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ret_code = i40e_alloc_adminq_arq_ring(hw);
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if (ret_code)
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goto init_adminq_exit;
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/* allocate buffers in the rings */
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ret_code = i40e_alloc_arq_bufs(hw);
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if (ret_code)
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goto init_adminq_free_rings;
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/* initialize base registers */
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ret_code = i40e_config_arq_regs(hw);
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if (ret_code)
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goto init_adminq_free_rings;
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/* success! */
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hw->aq.arq.count = hw->aq.num_arq_entries;
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goto init_adminq_exit;
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init_adminq_free_rings:
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i40e_free_adminq_arq(hw);
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init_adminq_exit:
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return ret_code;
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}
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|
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/**
|
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* i40e_shutdown_asq - shutdown the ASQ
|
|
* @hw: pointer to the hardware structure
|
|
*
|
|
* The main shutdown routine for the Admin Send Queue
|
|
**/
|
|
static i40e_status i40e_shutdown_asq(struct i40e_hw *hw)
|
|
{
|
|
i40e_status ret_code = 0;
|
|
|
|
mutex_lock(&hw->aq.asq_mutex);
|
|
|
|
if (hw->aq.asq.count == 0) {
|
|
ret_code = I40E_ERR_NOT_READY;
|
|
goto shutdown_asq_out;
|
|
}
|
|
|
|
/* Stop firmware AdminQ processing */
|
|
wr32(hw, hw->aq.asq.head, 0);
|
|
wr32(hw, hw->aq.asq.tail, 0);
|
|
wr32(hw, hw->aq.asq.len, 0);
|
|
wr32(hw, hw->aq.asq.bal, 0);
|
|
wr32(hw, hw->aq.asq.bah, 0);
|
|
|
|
hw->aq.asq.count = 0; /* to indicate uninitialized queue */
|
|
|
|
/* free ring buffers */
|
|
i40e_free_asq_bufs(hw);
|
|
|
|
shutdown_asq_out:
|
|
mutex_unlock(&hw->aq.asq_mutex);
|
|
return ret_code;
|
|
}
|
|
|
|
/**
|
|
* i40e_shutdown_arq - shutdown ARQ
|
|
* @hw: pointer to the hardware structure
|
|
*
|
|
* The main shutdown routine for the Admin Receive Queue
|
|
**/
|
|
static i40e_status i40e_shutdown_arq(struct i40e_hw *hw)
|
|
{
|
|
i40e_status ret_code = 0;
|
|
|
|
mutex_lock(&hw->aq.arq_mutex);
|
|
|
|
if (hw->aq.arq.count == 0) {
|
|
ret_code = I40E_ERR_NOT_READY;
|
|
goto shutdown_arq_out;
|
|
}
|
|
|
|
/* Stop firmware AdminQ processing */
|
|
wr32(hw, hw->aq.arq.head, 0);
|
|
wr32(hw, hw->aq.arq.tail, 0);
|
|
wr32(hw, hw->aq.arq.len, 0);
|
|
wr32(hw, hw->aq.arq.bal, 0);
|
|
wr32(hw, hw->aq.arq.bah, 0);
|
|
|
|
hw->aq.arq.count = 0; /* to indicate uninitialized queue */
|
|
|
|
/* free ring buffers */
|
|
i40e_free_arq_bufs(hw);
|
|
|
|
shutdown_arq_out:
|
|
mutex_unlock(&hw->aq.arq_mutex);
|
|
return ret_code;
|
|
}
|
|
|
|
/**
|
|
* i40e_init_adminq - main initialization routine for Admin Queue
|
|
* @hw: pointer to the hardware structure
|
|
*
|
|
* Prior to calling this function, drivers *MUST* set the following fields
|
|
* in the hw->aq structure:
|
|
* - hw->aq.num_asq_entries
|
|
* - hw->aq.num_arq_entries
|
|
* - hw->aq.arq_buf_size
|
|
* - hw->aq.asq_buf_size
|
|
**/
|
|
i40e_status i40e_init_adminq(struct i40e_hw *hw)
|
|
{
|
|
u16 cfg_ptr, oem_hi, oem_lo;
|
|
u16 eetrack_lo, eetrack_hi;
|
|
i40e_status ret_code;
|
|
int retry = 0;
|
|
|
|
/* verify input for valid configuration */
|
|
if ((hw->aq.num_arq_entries == 0) ||
|
|
(hw->aq.num_asq_entries == 0) ||
|
|
(hw->aq.arq_buf_size == 0) ||
|
|
(hw->aq.asq_buf_size == 0)) {
|
|
ret_code = I40E_ERR_CONFIG;
|
|
goto init_adminq_exit;
|
|
}
|
|
|
|
/* Set up register offsets */
|
|
i40e_adminq_init_regs(hw);
|
|
|
|
/* setup ASQ command write back timeout */
|
|
hw->aq.asq_cmd_timeout = I40E_ASQ_CMD_TIMEOUT;
|
|
|
|
/* allocate the ASQ */
|
|
ret_code = i40e_init_asq(hw);
|
|
if (ret_code)
|
|
goto init_adminq_destroy_locks;
|
|
|
|
/* allocate the ARQ */
|
|
ret_code = i40e_init_arq(hw);
|
|
if (ret_code)
|
|
goto init_adminq_free_asq;
|
|
|
|
/* There are some cases where the firmware may not be quite ready
|
|
* for AdminQ operations, so we retry the AdminQ setup a few times
|
|
* if we see timeouts in this first AQ call.
|
|
*/
|
|
do {
|
|
ret_code = i40e_aq_get_firmware_version(hw,
|
|
&hw->aq.fw_maj_ver,
|
|
&hw->aq.fw_min_ver,
|
|
&hw->aq.fw_build,
|
|
&hw->aq.api_maj_ver,
|
|
&hw->aq.api_min_ver,
|
|
NULL);
|
|
if (ret_code != I40E_ERR_ADMIN_QUEUE_TIMEOUT)
|
|
break;
|
|
retry++;
|
|
msleep(100);
|
|
i40e_resume_aq(hw);
|
|
} while (retry < 10);
|
|
if (ret_code != I40E_SUCCESS)
|
|
goto init_adminq_free_arq;
|
|
|
|
/* get the NVM version info */
|
|
i40e_read_nvm_word(hw, I40E_SR_NVM_DEV_STARTER_VERSION,
|
|
&hw->nvm.version);
|
|
i40e_read_nvm_word(hw, I40E_SR_NVM_EETRACK_LO, &eetrack_lo);
|
|
i40e_read_nvm_word(hw, I40E_SR_NVM_EETRACK_HI, &eetrack_hi);
|
|
hw->nvm.eetrack = (eetrack_hi << 16) | eetrack_lo;
|
|
i40e_read_nvm_word(hw, I40E_SR_BOOT_CONFIG_PTR, &cfg_ptr);
|
|
i40e_read_nvm_word(hw, (cfg_ptr + I40E_NVM_OEM_VER_OFF),
|
|
&oem_hi);
|
|
i40e_read_nvm_word(hw, (cfg_ptr + (I40E_NVM_OEM_VER_OFF + 1)),
|
|
&oem_lo);
|
|
hw->nvm.oem_ver = ((u32)oem_hi << 16) | oem_lo;
|
|
|
|
if (hw->aq.api_maj_ver > I40E_FW_API_VERSION_MAJOR) {
|
|
ret_code = I40E_ERR_FIRMWARE_API_VERSION;
|
|
goto init_adminq_free_arq;
|
|
}
|
|
|
|
/* pre-emptive resource lock release */
|
|
i40e_aq_release_resource(hw, I40E_NVM_RESOURCE_ID, 0, NULL);
|
|
hw->nvm_release_on_done = false;
|
|
hw->nvmupd_state = I40E_NVMUPD_STATE_INIT;
|
|
|
|
ret_code = 0;
|
|
|
|
/* success! */
|
|
goto init_adminq_exit;
|
|
|
|
init_adminq_free_arq:
|
|
i40e_shutdown_arq(hw);
|
|
init_adminq_free_asq:
|
|
i40e_shutdown_asq(hw);
|
|
init_adminq_destroy_locks:
|
|
|
|
init_adminq_exit:
|
|
return ret_code;
|
|
}
|
|
|
|
/**
|
|
* i40e_shutdown_adminq - shutdown routine for the Admin Queue
|
|
* @hw: pointer to the hardware structure
|
|
**/
|
|
i40e_status i40e_shutdown_adminq(struct i40e_hw *hw)
|
|
{
|
|
i40e_status ret_code = 0;
|
|
|
|
if (i40e_check_asq_alive(hw))
|
|
i40e_aq_queue_shutdown(hw, true);
|
|
|
|
i40e_shutdown_asq(hw);
|
|
i40e_shutdown_arq(hw);
|
|
|
|
if (hw->nvm_buff.va)
|
|
i40e_free_virt_mem(hw, &hw->nvm_buff);
|
|
|
|
return ret_code;
|
|
}
|
|
|
|
/**
|
|
* i40e_clean_asq - cleans Admin send queue
|
|
* @hw: pointer to the hardware structure
|
|
*
|
|
* returns the number of free desc
|
|
**/
|
|
static u16 i40e_clean_asq(struct i40e_hw *hw)
|
|
{
|
|
struct i40e_adminq_ring *asq = &(hw->aq.asq);
|
|
struct i40e_asq_cmd_details *details;
|
|
u16 ntc = asq->next_to_clean;
|
|
struct i40e_aq_desc desc_cb;
|
|
struct i40e_aq_desc *desc;
|
|
|
|
desc = I40E_ADMINQ_DESC(*asq, ntc);
|
|
details = I40E_ADMINQ_DETAILS(*asq, ntc);
|
|
while (rd32(hw, hw->aq.asq.head) != ntc) {
|
|
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
|
|
"ntc %d head %d.\n", ntc, rd32(hw, hw->aq.asq.head));
|
|
|
|
if (details->callback) {
|
|
I40E_ADMINQ_CALLBACK cb_func =
|
|
(I40E_ADMINQ_CALLBACK)details->callback;
|
|
desc_cb = *desc;
|
|
cb_func(hw, &desc_cb);
|
|
}
|
|
memset(desc, 0, sizeof(*desc));
|
|
memset(details, 0, sizeof(*details));
|
|
ntc++;
|
|
if (ntc == asq->count)
|
|
ntc = 0;
|
|
desc = I40E_ADMINQ_DESC(*asq, ntc);
|
|
details = I40E_ADMINQ_DETAILS(*asq, ntc);
|
|
}
|
|
|
|
asq->next_to_clean = ntc;
|
|
|
|
return I40E_DESC_UNUSED(asq);
|
|
}
|
|
|
|
/**
|
|
* i40e_asq_done - check if FW has processed the Admin Send Queue
|
|
* @hw: pointer to the hw struct
|
|
*
|
|
* Returns true if the firmware has processed all descriptors on the
|
|
* admin send queue. Returns false if there are still requests pending.
|
|
**/
|
|
static bool i40e_asq_done(struct i40e_hw *hw)
|
|
{
|
|
/* AQ designers suggest use of head for better
|
|
* timing reliability than DD bit
|
|
*/
|
|
return rd32(hw, hw->aq.asq.head) == hw->aq.asq.next_to_use;
|
|
|
|
}
|
|
|
|
/**
|
|
* i40e_asq_send_command - send command to Admin Queue
|
|
* @hw: pointer to the hw struct
|
|
* @desc: prefilled descriptor describing the command (non DMA mem)
|
|
* @buff: buffer to use for indirect commands
|
|
* @buff_size: size of buffer for indirect commands
|
|
* @cmd_details: pointer to command details structure
|
|
*
|
|
* This is the main send command driver routine for the Admin Queue send
|
|
* queue. It runs the queue, cleans the queue, etc
|
|
**/
|
|
i40e_status i40e_asq_send_command(struct i40e_hw *hw,
|
|
struct i40e_aq_desc *desc,
|
|
void *buff, /* can be NULL */
|
|
u16 buff_size,
|
|
struct i40e_asq_cmd_details *cmd_details)
|
|
{
|
|
i40e_status status = 0;
|
|
struct i40e_dma_mem *dma_buff = NULL;
|
|
struct i40e_asq_cmd_details *details;
|
|
struct i40e_aq_desc *desc_on_ring;
|
|
bool cmd_completed = false;
|
|
u16 retval = 0;
|
|
u32 val = 0;
|
|
|
|
mutex_lock(&hw->aq.asq_mutex);
|
|
|
|
if (hw->aq.asq.count == 0) {
|
|
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
|
|
"AQTX: Admin queue not initialized.\n");
|
|
status = I40E_ERR_QUEUE_EMPTY;
|
|
goto asq_send_command_error;
|
|
}
|
|
|
|
hw->aq.asq_last_status = I40E_AQ_RC_OK;
|
|
|
|
val = rd32(hw, hw->aq.asq.head);
|
|
if (val >= hw->aq.num_asq_entries) {
|
|
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
|
|
"AQTX: head overrun at %d\n", val);
|
|
status = I40E_ERR_QUEUE_EMPTY;
|
|
goto asq_send_command_error;
|
|
}
|
|
|
|
details = I40E_ADMINQ_DETAILS(hw->aq.asq, hw->aq.asq.next_to_use);
|
|
if (cmd_details) {
|
|
*details = *cmd_details;
|
|
|
|
/* If the cmd_details are defined copy the cookie. The
|
|
* cpu_to_le32 is not needed here because the data is ignored
|
|
* by the FW, only used by the driver
|
|
*/
|
|
if (details->cookie) {
|
|
desc->cookie_high =
|
|
cpu_to_le32(upper_32_bits(details->cookie));
|
|
desc->cookie_low =
|
|
cpu_to_le32(lower_32_bits(details->cookie));
|
|
}
|
|
} else {
|
|
memset(details, 0, sizeof(struct i40e_asq_cmd_details));
|
|
}
|
|
|
|
/* clear requested flags and then set additional flags if defined */
|
|
desc->flags &= ~cpu_to_le16(details->flags_dis);
|
|
desc->flags |= cpu_to_le16(details->flags_ena);
|
|
|
|
if (buff_size > hw->aq.asq_buf_size) {
|
|
i40e_debug(hw,
|
|
I40E_DEBUG_AQ_MESSAGE,
|
|
"AQTX: Invalid buffer size: %d.\n",
|
|
buff_size);
|
|
status = I40E_ERR_INVALID_SIZE;
|
|
goto asq_send_command_error;
|
|
}
|
|
|
|
if (details->postpone && !details->async) {
|
|
i40e_debug(hw,
|
|
I40E_DEBUG_AQ_MESSAGE,
|
|
"AQTX: Async flag not set along with postpone flag");
|
|
status = I40E_ERR_PARAM;
|
|
goto asq_send_command_error;
|
|
}
|
|
|
|
/* call clean and check queue available function to reclaim the
|
|
* descriptors that were processed by FW, the function returns the
|
|
* number of desc available
|
|
*/
|
|
/* the clean function called here could be called in a separate thread
|
|
* in case of asynchronous completions
|
|
*/
|
|
if (i40e_clean_asq(hw) == 0) {
|
|
i40e_debug(hw,
|
|
I40E_DEBUG_AQ_MESSAGE,
|
|
"AQTX: Error queue is full.\n");
|
|
status = I40E_ERR_ADMIN_QUEUE_FULL;
|
|
goto asq_send_command_error;
|
|
}
|
|
|
|
/* initialize the temp desc pointer with the right desc */
|
|
desc_on_ring = I40E_ADMINQ_DESC(hw->aq.asq, hw->aq.asq.next_to_use);
|
|
|
|
/* if the desc is available copy the temp desc to the right place */
|
|
*desc_on_ring = *desc;
|
|
|
|
/* if buff is not NULL assume indirect command */
|
|
if (buff != NULL) {
|
|
dma_buff = &(hw->aq.asq.r.asq_bi[hw->aq.asq.next_to_use]);
|
|
/* copy the user buff into the respective DMA buff */
|
|
memcpy(dma_buff->va, buff, buff_size);
|
|
desc_on_ring->datalen = cpu_to_le16(buff_size);
|
|
|
|
/* Update the address values in the desc with the pa value
|
|
* for respective buffer
|
|
*/
|
|
desc_on_ring->params.external.addr_high =
|
|
cpu_to_le32(upper_32_bits(dma_buff->pa));
|
|
desc_on_ring->params.external.addr_low =
|
|
cpu_to_le32(lower_32_bits(dma_buff->pa));
|
|
}
|
|
|
|
/* bump the tail */
|
|
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n");
|
|
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc_on_ring,
|
|
buff, buff_size);
|
|
(hw->aq.asq.next_to_use)++;
|
|
if (hw->aq.asq.next_to_use == hw->aq.asq.count)
|
|
hw->aq.asq.next_to_use = 0;
|
|
if (!details->postpone)
|
|
wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
|
|
|
|
/* if cmd_details are not defined or async flag is not set,
|
|
* we need to wait for desc write back
|
|
*/
|
|
if (!details->async && !details->postpone) {
|
|
u32 total_delay = 0;
|
|
|
|
do {
|
|
/* AQ designers suggest use of head for better
|
|
* timing reliability than DD bit
|
|
*/
|
|
if (i40e_asq_done(hw))
|
|
break;
|
|
usleep_range(1000, 2000);
|
|
total_delay++;
|
|
} while (total_delay < hw->aq.asq_cmd_timeout);
|
|
}
|
|
|
|
/* if ready, copy the desc back to temp */
|
|
if (i40e_asq_done(hw)) {
|
|
*desc = *desc_on_ring;
|
|
if (buff != NULL)
|
|
memcpy(buff, dma_buff->va, buff_size);
|
|
retval = le16_to_cpu(desc->retval);
|
|
if (retval != 0) {
|
|
i40e_debug(hw,
|
|
I40E_DEBUG_AQ_MESSAGE,
|
|
"AQTX: Command completed with error 0x%X.\n",
|
|
retval);
|
|
|
|
/* strip off FW internal code */
|
|
retval &= 0xff;
|
|
}
|
|
cmd_completed = true;
|
|
if ((enum i40e_admin_queue_err)retval == I40E_AQ_RC_OK)
|
|
status = 0;
|
|
else
|
|
status = I40E_ERR_ADMIN_QUEUE_ERROR;
|
|
hw->aq.asq_last_status = (enum i40e_admin_queue_err)retval;
|
|
}
|
|
|
|
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
|
|
"AQTX: desc and buffer writeback:\n");
|
|
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, buff, buff_size);
|
|
|
|
/* save writeback aq if requested */
|
|
if (details->wb_desc)
|
|
*details->wb_desc = *desc_on_ring;
|
|
|
|
/* update the error if time out occurred */
|
|
if ((!cmd_completed) &&
|
|
(!details->async && !details->postpone)) {
|
|
i40e_debug(hw,
|
|
I40E_DEBUG_AQ_MESSAGE,
|
|
"AQTX: Writeback timeout.\n");
|
|
status = I40E_ERR_ADMIN_QUEUE_TIMEOUT;
|
|
}
|
|
|
|
asq_send_command_error:
|
|
mutex_unlock(&hw->aq.asq_mutex);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* i40e_fill_default_direct_cmd_desc - AQ descriptor helper function
|
|
* @desc: pointer to the temp descriptor (non DMA mem)
|
|
* @opcode: the opcode can be used to decide which flags to turn off or on
|
|
*
|
|
* Fill the desc with default values
|
|
**/
|
|
void i40e_fill_default_direct_cmd_desc(struct i40e_aq_desc *desc,
|
|
u16 opcode)
|
|
{
|
|
/* zero out the desc */
|
|
memset((void *)desc, 0, sizeof(struct i40e_aq_desc));
|
|
desc->opcode = cpu_to_le16(opcode);
|
|
desc->flags = cpu_to_le16(I40E_AQ_FLAG_SI);
|
|
}
|
|
|
|
/**
|
|
* i40e_clean_arq_element
|
|
* @hw: pointer to the hw struct
|
|
* @e: event info from the receive descriptor, includes any buffers
|
|
* @pending: number of events that could be left to process
|
|
*
|
|
* This function cleans one Admin Receive Queue element and returns
|
|
* the contents through e. It can also return how many events are
|
|
* left to process through 'pending'
|
|
**/
|
|
i40e_status i40e_clean_arq_element(struct i40e_hw *hw,
|
|
struct i40e_arq_event_info *e,
|
|
u16 *pending)
|
|
{
|
|
i40e_status ret_code = 0;
|
|
u16 ntc = hw->aq.arq.next_to_clean;
|
|
struct i40e_aq_desc *desc;
|
|
struct i40e_dma_mem *bi;
|
|
u16 desc_idx;
|
|
u16 datalen;
|
|
u16 flags;
|
|
u16 ntu;
|
|
|
|
/* pre-clean the event info */
|
|
memset(&e->desc, 0, sizeof(e->desc));
|
|
|
|
/* take the lock before we start messing with the ring */
|
|
mutex_lock(&hw->aq.arq_mutex);
|
|
|
|
if (hw->aq.arq.count == 0) {
|
|
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
|
|
"AQRX: Admin queue not initialized.\n");
|
|
ret_code = I40E_ERR_QUEUE_EMPTY;
|
|
goto clean_arq_element_err;
|
|
}
|
|
|
|
/* set next_to_use to head */
|
|
ntu = (rd32(hw, hw->aq.arq.head) & I40E_PF_ARQH_ARQH_MASK);
|
|
if (ntu == ntc) {
|
|
/* nothing to do - shouldn't need to update ring's values */
|
|
ret_code = I40E_ERR_ADMIN_QUEUE_NO_WORK;
|
|
goto clean_arq_element_out;
|
|
}
|
|
|
|
/* now clean the next descriptor */
|
|
desc = I40E_ADMINQ_DESC(hw->aq.arq, ntc);
|
|
desc_idx = ntc;
|
|
|
|
flags = le16_to_cpu(desc->flags);
|
|
if (flags & I40E_AQ_FLAG_ERR) {
|
|
ret_code = I40E_ERR_ADMIN_QUEUE_ERROR;
|
|
hw->aq.arq_last_status =
|
|
(enum i40e_admin_queue_err)le16_to_cpu(desc->retval);
|
|
i40e_debug(hw,
|
|
I40E_DEBUG_AQ_MESSAGE,
|
|
"AQRX: Event received with error 0x%X.\n",
|
|
hw->aq.arq_last_status);
|
|
}
|
|
|
|
e->desc = *desc;
|
|
datalen = le16_to_cpu(desc->datalen);
|
|
e->msg_len = min(datalen, e->buf_len);
|
|
if (e->msg_buf != NULL && (e->msg_len != 0))
|
|
memcpy(e->msg_buf, hw->aq.arq.r.arq_bi[desc_idx].va,
|
|
e->msg_len);
|
|
|
|
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQRX: desc and buffer:\n");
|
|
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, e->msg_buf,
|
|
hw->aq.arq_buf_size);
|
|
|
|
/* Restore the original datalen and buffer address in the desc,
|
|
* FW updates datalen to indicate the event message
|
|
* size
|
|
*/
|
|
bi = &hw->aq.arq.r.arq_bi[ntc];
|
|
memset((void *)desc, 0, sizeof(struct i40e_aq_desc));
|
|
|
|
desc->flags = cpu_to_le16(I40E_AQ_FLAG_BUF);
|
|
if (hw->aq.arq_buf_size > I40E_AQ_LARGE_BUF)
|
|
desc->flags |= cpu_to_le16(I40E_AQ_FLAG_LB);
|
|
desc->datalen = cpu_to_le16((u16)bi->size);
|
|
desc->params.external.addr_high = cpu_to_le32(upper_32_bits(bi->pa));
|
|
desc->params.external.addr_low = cpu_to_le32(lower_32_bits(bi->pa));
|
|
|
|
/* set tail = the last cleaned desc index. */
|
|
wr32(hw, hw->aq.arq.tail, ntc);
|
|
/* ntc is updated to tail + 1 */
|
|
ntc++;
|
|
if (ntc == hw->aq.num_arq_entries)
|
|
ntc = 0;
|
|
hw->aq.arq.next_to_clean = ntc;
|
|
hw->aq.arq.next_to_use = ntu;
|
|
|
|
i40e_nvmupd_check_wait_event(hw, le16_to_cpu(e->desc.opcode));
|
|
clean_arq_element_out:
|
|
/* Set pending if needed, unlock and return */
|
|
if (pending)
|
|
*pending = (ntc > ntu ? hw->aq.arq.count : 0) + (ntu - ntc);
|
|
clean_arq_element_err:
|
|
mutex_unlock(&hw->aq.arq_mutex);
|
|
|
|
return ret_code;
|
|
}
|
|
|
|
static void i40e_resume_aq(struct i40e_hw *hw)
|
|
{
|
|
/* Registers are reset after PF reset */
|
|
hw->aq.asq.next_to_use = 0;
|
|
hw->aq.asq.next_to_clean = 0;
|
|
|
|
i40e_config_asq_regs(hw);
|
|
|
|
hw->aq.arq.next_to_use = 0;
|
|
hw->aq.arq.next_to_clean = 0;
|
|
|
|
i40e_config_arq_regs(hw);
|
|
}
|