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 - 2019 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 - 2019 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
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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
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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
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54 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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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);
74 int offset_size = copy_size;
76 if (le32_to_cpu(header->tlv_version) != 1)
79 if (WARN_ONCE(apply_point >= IWL_FW_INI_APPLY_NUM,
80 "Invalid apply point id %d\n", apply_point))
84 data = &trans->dbg.apply_points_ext[apply_point];
86 data = &trans->dbg.apply_points[apply_point];
88 /* add room for is_alloc field in &iwl_fw_ini_allocation_data struct */
89 if (le32_to_cpu(tlv->type) == IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION) {
90 struct iwl_fw_ini_allocation_data *buf_alloc =
93 offset_size += sizeof(buf_alloc->is_alloc);
97 * Make sure we still have room to copy this TLV. Offset points to the
98 * location the last copy ended.
100 if (WARN_ONCE(data->offset + offset_size > data->size,
101 "Not enough memory for apply point %d\n",
105 memcpy(data->data + data->offset, (void *)tlv, copy_size);
106 data->offset += offset_size;
109 void iwl_alloc_dbg_tlv(struct iwl_trans *trans, size_t len, const u8 *data,
112 struct iwl_ucode_tlv *tlv;
113 u32 size[IWL_FW_INI_APPLY_NUM] = {0};
116 while (len >= sizeof(*tlv)) {
117 u32 tlv_len, tlv_type, apply;
118 struct iwl_fw_ini_header *hdr;
123 tlv_len = le32_to_cpu(tlv->length);
124 tlv_type = le32_to_cpu(tlv->type);
129 len -= ALIGN(tlv_len, 4);
130 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
132 if (tlv_type < IWL_UCODE_TLV_DEBUG_BASE ||
133 tlv_type > IWL_UCODE_TLV_DEBUG_MAX)
136 hdr = (void *)&tlv->data[0];
137 apply = le32_to_cpu(hdr->apply_point);
139 if (le32_to_cpu(hdr->tlv_version) != 1)
142 IWL_DEBUG_FW(trans, "WRT: read TLV 0x%x, apply point %d\n",
143 le32_to_cpu(tlv->type), apply);
145 if (WARN_ON(apply >= IWL_FW_INI_APPLY_NUM))
148 /* add room for is_alloc field in &iwl_fw_ini_allocation_data
151 if (tlv_type == IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION) {
152 struct iwl_fw_ini_allocation_data *buf_alloc =
155 size[apply] += sizeof(buf_alloc->is_alloc);
158 size[apply] += sizeof(*tlv) + tlv_len;
161 for (i = 0; i < ARRAY_SIZE(size); i++) {
167 mem = kzalloc(size[i], GFP_KERNEL);
170 IWL_ERR(trans, "No memory for apply point %d\n", i);
175 trans->dbg.apply_points_ext[i].data = mem;
176 trans->dbg.apply_points_ext[i].size = size[i];
178 trans->dbg.apply_points[i].data = mem;
179 trans->dbg.apply_points[i].size = size[i];
182 trans->dbg.ini_valid = true;
186 void iwl_fw_dbg_free(struct iwl_trans *trans)
190 for (i = 0; i < ARRAY_SIZE(trans->dbg.apply_points); i++) {
191 kfree(trans->dbg.apply_points[i].data);
192 trans->dbg.apply_points[i].size = 0;
193 trans->dbg.apply_points[i].offset = 0;
195 kfree(trans->dbg.apply_points_ext[i].data);
196 trans->dbg.apply_points_ext[i].size = 0;
197 trans->dbg.apply_points_ext[i].offset = 0;
201 static int iwl_parse_fw_dbg_tlv(struct iwl_trans *trans, const u8 *data,
204 struct iwl_ucode_tlv *tlv;
205 enum iwl_ucode_tlv_type tlv_type;
208 while (len >= sizeof(*tlv)) {
212 tlv_len = le32_to_cpu(tlv->length);
213 tlv_type = le32_to_cpu(tlv->type);
216 IWL_ERR(trans, "invalid TLV len: %zd/%u\n",
220 len -= ALIGN(tlv_len, 4);
221 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
224 case IWL_UCODE_TLV_TYPE_DEBUG_INFO:
225 case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION:
226 case IWL_UCODE_TLV_TYPE_HCMD:
227 case IWL_UCODE_TLV_TYPE_REGIONS:
228 case IWL_UCODE_TLV_TYPE_TRIGGERS:
229 case IWL_UCODE_TLV_TYPE_DEBUG_FLOW:
230 iwl_fw_dbg_copy_tlv(trans, tlv, true);
233 WARN_ONCE(1, "Invalid TLV %x\n", tlv_type);
241 void iwl_load_fw_dbg_tlv(struct device *dev, struct iwl_trans *trans)
243 const struct firmware *fw;
246 if (trans->dbg.external_ini_loaded || !iwlwifi_mod_params.enable_ini)
249 res = request_firmware(&fw, "iwl-dbg-tlv.ini", dev);
253 iwl_alloc_dbg_tlv(trans, fw->size, fw->data, true);
254 iwl_parse_fw_dbg_tlv(trans, fw->data, fw->size);
256 trans->dbg.external_ini_loaded = true;
257 release_firmware(fw);