1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright (C) 2018 Intel Corporation
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program.
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 * Copyright (C) 2018 Intel Corporation
32 * All rights reserved.
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
38 * * Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * * Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in
42 * the documentation and/or other materials provided with the
44 * * Neither the name Intel Corporation nor the names of its
45 * contributors may be used to endorse or promote products derived
46 * from this software without specific prior written permission.
48 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
49 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
50 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
51 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
52 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
53 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
54 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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58 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60 *****************************************************************************/
62 #include <linux/firmware.h>
63 #include "iwl-trans.h"
64 #include "iwl-dbg-tlv.h"
66 void iwl_fw_dbg_copy_tlv(struct iwl_trans *trans, struct iwl_ucode_tlv *tlv,
69 struct iwl_apply_point_data *data;
70 struct iwl_fw_ini_header *header = (void *)&tlv->data[0];
71 u32 apply_point = le32_to_cpu(header->apply_point);
73 int copy_size = le32_to_cpu(tlv->length) + sizeof(*tlv);
75 if (WARN_ONCE(apply_point >= IWL_FW_INI_APPLY_NUM,
76 "Invalid apply point id %d\n", apply_point))
80 data = &trans->apply_points_ext[apply_point];
82 data = &trans->apply_points[apply_point];
85 * Make sure we still have room to copy this TLV. Offset points to the
86 * location the last copy ended.
88 if (WARN_ONCE(data->offset + copy_size > data->size,
89 "Not enough memory for apply point %d\n",
93 memcpy(data->data + data->offset, (void *)tlv, copy_size);
94 data->offset += copy_size;
97 void iwl_alloc_dbg_tlv(struct iwl_trans *trans, size_t len, const u8 *data,
100 struct iwl_ucode_tlv *tlv;
101 u32 size[IWL_FW_INI_APPLY_NUM] = {0};
104 while (len >= sizeof(*tlv)) {
105 u32 tlv_len, tlv_type, apply;
106 struct iwl_fw_ini_header *hdr;
111 tlv_len = le32_to_cpu(tlv->length);
112 tlv_type = le32_to_cpu(tlv->type);
117 len -= ALIGN(tlv_len, 4);
118 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
120 if (!(tlv_type & IWL_UCODE_INI_TLV_GROUP))
123 hdr = (void *)&tlv->data[0];
124 apply = le32_to_cpu(hdr->apply_point);
126 if (WARN_ON(apply >= IWL_FW_INI_APPLY_NUM))
129 size[apply] += sizeof(*tlv) + tlv_len;
132 for (i = 0; i < ARRAY_SIZE(size); i++) {
138 mem = kzalloc(size[i], GFP_KERNEL);
141 IWL_ERR(trans, "No memory for apply point %d\n", i);
146 trans->apply_points_ext[i].data = mem;
147 trans->apply_points_ext[i].size = size[i];
149 trans->apply_points[i].data = mem;
150 trans->apply_points[i].size = size[i];
155 void iwl_fw_dbg_free(struct iwl_trans *trans)
159 for (i = 0; i < ARRAY_SIZE(trans->apply_points); i++) {
160 kfree(trans->apply_points[i].data);
161 trans->apply_points[i].size = 0;
162 trans->apply_points[i].offset = 0;
164 kfree(trans->apply_points_ext[i].data);
165 trans->apply_points_ext[i].size = 0;
166 trans->apply_points_ext[i].offset = 0;
170 static int iwl_parse_fw_dbg_tlv(struct iwl_trans *trans, const u8 *data,
173 struct iwl_ucode_tlv *tlv;
174 enum iwl_ucode_tlv_type tlv_type;
177 while (len >= sizeof(*tlv)) {
181 tlv_len = le32_to_cpu(tlv->length);
182 tlv_type = le32_to_cpu(tlv->type);
185 IWL_ERR(trans, "invalid TLV len: %zd/%u\n",
189 len -= ALIGN(tlv_len, 4);
190 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
193 case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION:
194 case IWL_UCODE_TLV_TYPE_HCMD:
195 case IWL_UCODE_TLV_TYPE_REGIONS:
196 case IWL_UCODE_TLV_TYPE_TRIGGERS:
197 case IWL_UCODE_TLV_TYPE_DEBUG_FLOW:
198 iwl_fw_dbg_copy_tlv(trans, tlv, true);
200 WARN_ONCE(1, "Invalid TLV %x\n", tlv_type);
208 void iwl_load_fw_dbg_tlv(struct device *dev, struct iwl_trans *trans)
210 const struct firmware *fw;
213 if (trans->external_ini_loaded || !iwlwifi_mod_params.enable_ini)
216 res = request_firmware(&fw, "iwl-dbg-tlv.ini", dev);
220 iwl_alloc_dbg_tlv(trans, fw->size, fw->data, true);
221 iwl_parse_fw_dbg_tlv(trans, fw->data, fw->size);
223 trans->external_ini_loaded = true;
224 release_firmware(fw);