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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) 2018 Intel Corporation
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program.
*
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*
* Contact Information:
* Intel Linux Wireless <linuxwifi@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright (C) 2018 Intel Corporation
* 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 <linux/firmware.h>
#include "iwl-trans.h"
#include "iwl-dbg-tlv.h"
void iwl_fw_dbg_copy_tlv(struct iwl_trans *trans, struct iwl_ucode_tlv *tlv,
bool ext)
{
struct iwl_apply_point_data *data;
struct iwl_fw_ini_header *header = (void *)&tlv->data[0];
u32 apply_point = le32_to_cpu(header->apply_point);
int copy_size = le32_to_cpu(tlv->length) + sizeof(*tlv);
if (WARN_ONCE(apply_point >= IWL_FW_INI_APPLY_NUM,
"Invalid apply point id %d\n", apply_point))
return;
if (ext)
data = &trans->apply_points_ext[apply_point];
else
data = &trans->apply_points[apply_point];
/*
* Make sure we still have room to copy this TLV. Offset points to the
* location the last copy ended.
*/
if (WARN_ONCE(data->offset + copy_size > data->size,
"Not enough memory for apply point %d\n",
apply_point))
return;
memcpy(data->data + data->offset, (void *)tlv, copy_size);
data->offset += copy_size;
}
void iwl_alloc_dbg_tlv(struct iwl_trans *trans, size_t len, const u8 *data,
bool ext)
{
struct iwl_ucode_tlv *tlv;
u32 size[IWL_FW_INI_APPLY_NUM] = {0};
int i;
while (len >= sizeof(*tlv)) {
u32 tlv_len, tlv_type, apply;
struct iwl_fw_ini_header *hdr;
len -= sizeof(*tlv);
tlv = (void *)data;
tlv_len = le32_to_cpu(tlv->length);
tlv_type = le32_to_cpu(tlv->type);
if (len < tlv_len)
return;
len -= ALIGN(tlv_len, 4);
data += sizeof(*tlv) + ALIGN(tlv_len, 4);
if (!(tlv_type & IWL_UCODE_INI_TLV_GROUP))
continue;
hdr = (void *)&tlv->data[0];
apply = le32_to_cpu(hdr->apply_point);
IWL_DEBUG_FW(trans, "Read TLV %x, apply point %d\n",
le32_to_cpu(tlv->type), apply);
if (WARN_ON(apply >= IWL_FW_INI_APPLY_NUM))
continue;
size[apply] += sizeof(*tlv) + tlv_len;
}
for (i = 0; i < ARRAY_SIZE(size); i++) {
void *mem;
if (!size[i])
continue;
mem = kzalloc(size[i], GFP_KERNEL);
if (!mem) {
IWL_ERR(trans, "No memory for apply point %d\n", i);
return;
}
if (ext) {
trans->apply_points_ext[i].data = mem;
trans->apply_points_ext[i].size = size[i];
} else {
trans->apply_points[i].data = mem;
trans->apply_points[i].size = size[i];
}
trans->ini_valid = true;
}
}
void iwl_fw_dbg_free(struct iwl_trans *trans)
{
int i;
for (i = 0; i < ARRAY_SIZE(trans->apply_points); i++) {
kfree(trans->apply_points[i].data);
trans->apply_points[i].size = 0;
trans->apply_points[i].offset = 0;
kfree(trans->apply_points_ext[i].data);
trans->apply_points_ext[i].size = 0;
trans->apply_points_ext[i].offset = 0;
}
}
static int iwl_parse_fw_dbg_tlv(struct iwl_trans *trans, const u8 *data,
size_t len)
{
struct iwl_ucode_tlv *tlv;
enum iwl_ucode_tlv_type tlv_type;
u32 tlv_len;
while (len >= sizeof(*tlv)) {
len -= sizeof(*tlv);
tlv = (void *)data;
tlv_len = le32_to_cpu(tlv->length);
tlv_type = le32_to_cpu(tlv->type);
if (len < tlv_len) {
IWL_ERR(trans, "invalid TLV len: %zd/%u\n",
len, tlv_len);
return -EINVAL;
}
len -= ALIGN(tlv_len, 4);
data += sizeof(*tlv) + ALIGN(tlv_len, 4);
switch (tlv_type) {
case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION:
case IWL_UCODE_TLV_TYPE_HCMD:
case IWL_UCODE_TLV_TYPE_REGIONS:
case IWL_UCODE_TLV_TYPE_TRIGGERS:
case IWL_UCODE_TLV_TYPE_DEBUG_FLOW:
iwl_fw_dbg_copy_tlv(trans, tlv, true);
break;
default:
WARN_ONCE(1, "Invalid TLV %x\n", tlv_type);
break;
}
}
return 0;
}
void iwl_load_fw_dbg_tlv(struct device *dev, struct iwl_trans *trans)
{
const struct firmware *fw;
int res;
if (trans->external_ini_loaded || !iwlwifi_mod_params.enable_ini)
return;
res = request_firmware(&fw, "iwl-dbg-tlv.ini", dev);
if (res)
return;
iwl_alloc_dbg_tlv(trans, fw->size, fw->data, true);
iwl_parse_fw_dbg_tlv(trans, fw->data, fw->size);
trans->external_ini_loaded = true;
release_firmware(fw);
}
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