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