289 lines
8.8 KiB
C
289 lines
8.8 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2017 Intel Deutschland GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2017 Intel Deutschland GmbH
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*****************************************************************************/
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#include "iwl-trans.h"
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#include "iwl-fh.h"
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#include "iwl-context-info.h"
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#include "internal.h"
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#include "iwl-prph.h"
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static int iwl_pcie_get_num_sections(const struct fw_img *fw,
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int start)
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{
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int i = 0;
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while (start < fw->num_sec &&
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fw->sec[start].offset != CPU1_CPU2_SEPARATOR_SECTION &&
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fw->sec[start].offset != PAGING_SEPARATOR_SECTION) {
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start++;
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i++;
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}
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return i;
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}
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static int iwl_pcie_ctxt_info_alloc_dma(struct iwl_trans *trans,
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const struct fw_desc *sec,
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struct iwl_dram_data *dram)
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{
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dram->block = dma_alloc_coherent(trans->dev, sec->len,
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&dram->physical,
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GFP_KERNEL);
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if (!dram->block)
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return -ENOMEM;
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dram->size = sec->len;
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memcpy(dram->block, sec->data, sec->len);
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return 0;
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}
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static void iwl_pcie_ctxt_info_free_fw_img(struct iwl_trans *trans)
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{
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struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
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struct iwl_self_init_dram *dram = &trans_pcie->init_dram;
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int i;
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if (!dram->fw) {
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WARN_ON(dram->fw_cnt);
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return;
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}
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for (i = 0; i < dram->fw_cnt; i++)
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dma_free_coherent(trans->dev, dram->fw[i].size,
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dram->fw[i].block, dram->fw[i].physical);
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kfree(dram->fw);
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dram->fw_cnt = 0;
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dram->fw = NULL;
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}
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void iwl_pcie_ctxt_info_free_paging(struct iwl_trans *trans)
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{
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struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
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struct iwl_self_init_dram *dram = &trans_pcie->init_dram;
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int i;
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if (!dram->paging) {
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WARN_ON(dram->paging_cnt);
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return;
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}
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/* free paging*/
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for (i = 0; i < dram->paging_cnt; i++)
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dma_free_coherent(trans->dev, dram->paging[i].size,
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dram->paging[i].block,
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dram->paging[i].physical);
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kfree(dram->paging);
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dram->paging_cnt = 0;
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dram->paging = NULL;
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}
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static int iwl_pcie_ctxt_info_init_fw_sec(struct iwl_trans *trans,
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const struct fw_img *fw,
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struct iwl_context_info *ctxt_info)
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{
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struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
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struct iwl_self_init_dram *dram = &trans_pcie->init_dram;
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struct iwl_context_info_dram *ctxt_dram = &ctxt_info->dram;
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int i, ret, lmac_cnt, umac_cnt, paging_cnt;
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if (WARN(dram->paging,
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"paging shouldn't already be initialized (%d pages)\n",
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dram->paging_cnt))
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iwl_pcie_ctxt_info_free_paging(trans);
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lmac_cnt = iwl_pcie_get_num_sections(fw, 0);
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/* add 1 due to separator */
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umac_cnt = iwl_pcie_get_num_sections(fw, lmac_cnt + 1);
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/* add 2 due to separators */
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paging_cnt = iwl_pcie_get_num_sections(fw, lmac_cnt + umac_cnt + 2);
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dram->fw = kcalloc(umac_cnt + lmac_cnt, sizeof(*dram->fw), GFP_KERNEL);
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if (!dram->fw)
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return -ENOMEM;
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dram->paging = kcalloc(paging_cnt, sizeof(*dram->paging), GFP_KERNEL);
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if (!dram->paging)
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return -ENOMEM;
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/* initialize lmac sections */
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for (i = 0; i < lmac_cnt; i++) {
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ret = iwl_pcie_ctxt_info_alloc_dma(trans, &fw->sec[i],
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&dram->fw[dram->fw_cnt]);
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if (ret)
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return ret;
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ctxt_dram->lmac_img[i] =
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cpu_to_le64(dram->fw[dram->fw_cnt].physical);
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dram->fw_cnt++;
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}
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/* initialize umac sections */
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for (i = 0; i < umac_cnt; i++) {
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/* access FW with +1 to make up for lmac separator */
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ret = iwl_pcie_ctxt_info_alloc_dma(trans,
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&fw->sec[dram->fw_cnt + 1],
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&dram->fw[dram->fw_cnt]);
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if (ret)
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return ret;
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ctxt_dram->umac_img[i] =
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cpu_to_le64(dram->fw[dram->fw_cnt].physical);
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dram->fw_cnt++;
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}
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/*
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* Initialize paging.
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* Paging memory isn't stored in dram->fw as the umac and lmac - it is
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* stored separately.
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* This is since the timing of its release is different -
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* while fw memory can be released on alive, the paging memory can be
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* freed only when the device goes down.
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* Given that, the logic here in accessing the fw image is a bit
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* different - fw_cnt isn't changing so loop counter is added to it.
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*/
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for (i = 0; i < paging_cnt; i++) {
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/* access FW with +2 to make up for lmac & umac separators */
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int fw_idx = dram->fw_cnt + i + 2;
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ret = iwl_pcie_ctxt_info_alloc_dma(trans, &fw->sec[fw_idx],
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&dram->paging[i]);
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if (ret)
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return ret;
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ctxt_dram->virtual_img[i] =
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cpu_to_le64(dram->paging[i].physical);
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dram->paging_cnt++;
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}
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return 0;
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}
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int iwl_pcie_ctxt_info_init(struct iwl_trans *trans,
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const struct fw_img *fw)
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{
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struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
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struct iwl_context_info *ctxt_info;
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struct iwl_context_info_rbd_cfg *rx_cfg;
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u32 control_flags = 0;
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int ret;
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ctxt_info = dma_alloc_coherent(trans->dev, sizeof(*ctxt_info),
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&trans_pcie->ctxt_info_dma_addr,
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GFP_KERNEL);
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if (!ctxt_info)
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return -ENOMEM;
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ctxt_info->version.version = 0;
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ctxt_info->version.mac_id =
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cpu_to_le16((u16)iwl_read32(trans, CSR_HW_REV));
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/* size is in DWs */
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ctxt_info->version.size = cpu_to_le16(sizeof(*ctxt_info) / 4);
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BUILD_BUG_ON(RX_QUEUE_CB_SIZE(MQ_RX_TABLE_SIZE) > 0xF);
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control_flags = IWL_CTXT_INFO_RB_SIZE_4K |
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IWL_CTXT_INFO_TFD_FORMAT_LONG |
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RX_QUEUE_CB_SIZE(MQ_RX_TABLE_SIZE) <<
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IWL_CTXT_INFO_RB_CB_SIZE_POS;
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ctxt_info->control.control_flags = cpu_to_le32(control_flags);
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/* initialize RX default queue */
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rx_cfg = &ctxt_info->rbd_cfg;
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rx_cfg->free_rbd_addr = cpu_to_le64(trans_pcie->rxq->bd_dma);
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rx_cfg->used_rbd_addr = cpu_to_le64(trans_pcie->rxq->used_bd_dma);
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rx_cfg->status_wr_ptr = cpu_to_le64(trans_pcie->rxq->rb_stts_dma);
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/* initialize TX command queue */
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ctxt_info->hcmd_cfg.cmd_queue_addr =
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cpu_to_le64(trans_pcie->txq[trans_pcie->cmd_queue]->dma_addr);
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ctxt_info->hcmd_cfg.cmd_queue_size =
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TFD_QUEUE_CB_SIZE(trans_pcie->tx_cmd_queue_size);
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/* allocate ucode sections in dram and set addresses */
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ret = iwl_pcie_ctxt_info_init_fw_sec(trans, fw, ctxt_info);
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if (ret) {
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dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info),
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ctxt_info, trans_pcie->ctxt_info_dma_addr);
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return ret;
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}
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trans_pcie->ctxt_info = ctxt_info;
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iwl_enable_interrupts(trans);
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/* Configure debug, if exists */
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if (trans->dbg_dest_tlv)
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iwl_pcie_apply_destination(trans);
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/* kick FW self load */
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iwl_write64(trans, CSR_CTXT_INFO_BA, trans_pcie->ctxt_info_dma_addr);
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iwl_write_prph(trans, UREG_CPU_INIT_RUN, 1);
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/* Context info will be released upon alive or failure to get one */
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return 0;
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}
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void iwl_pcie_ctxt_info_free(struct iwl_trans *trans)
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{
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struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
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if (!trans_pcie->ctxt_info)
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return;
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dma_free_coherent(trans->dev, sizeof(*trans_pcie->ctxt_info),
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trans_pcie->ctxt_info,
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trans_pcie->ctxt_info_dma_addr);
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trans_pcie->ctxt_info_dma_addr = 0;
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trans_pcie->ctxt_info = NULL;
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iwl_pcie_ctxt_info_free_fw_img(trans);
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}
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