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1 | /****************************************************************************** |
2 | * | |
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. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
8 | * Copyright(c) 2007 - 2012 Intel Corporation. All rights reserved. | |
9 | * | |
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. | |
13 | * | |
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. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
22 | * USA | |
23 | * | |
24 | * The full GNU General Public License is included in this distribution | |
25 | * in the file called LICENSE.GPL. | |
26 | * | |
27 | * Contact Information: | |
28 | * Intel Linux Wireless <ilw@linux.intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
33 | * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved. | |
34 | * All rights reserved. | |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | * | |
62 | *****************************************************************************/ | |
63 | ||
64 | #include <linux/slab.h> | |
65 | #include <linux/string.h> | |
66 | ||
67 | #include "iwl-debug.h" | |
68 | #include "iwl-shared.h" | |
69 | #include "iwl-dev.h" | |
70 | ||
71 | #include "iwl-phy-db.h" | |
72 | ||
73 | #define CHANNEL_NUM_SIZE 4 /* num of channels in calib_ch size */ | |
74 | ||
75 | struct iwl_phy_db *iwl_phy_db_init(struct iwl_shared *shrd) | |
76 | { | |
77 | struct iwl_phy_db *phy_db = kzalloc(sizeof(struct iwl_phy_db), | |
78 | GFP_KERNEL); | |
79 | ||
80 | if (!phy_db) | |
81 | return phy_db; | |
82 | ||
83 | phy_db->shrd = shrd; | |
84 | ||
85 | /* TODO: add default values of the phy db. */ | |
86 | return phy_db; | |
87 | } | |
88 | ||
89 | /* | |
90 | * get phy db section: returns a pointer to a phy db section specified by | |
91 | * type and channel group id. | |
92 | */ | |
93 | static struct iwl_phy_db_entry * | |
94 | iwl_phy_db_get_section(struct iwl_phy_db *phy_db, | |
95 | enum iwl_phy_db_section_type type, | |
96 | u16 chg_id) | |
97 | { | |
98 | if (!phy_db || type < 0 || type >= IWL_PHY_DB_MAX) | |
99 | return NULL; | |
100 | ||
101 | switch (type) { | |
102 | case IWL_PHY_DB_CFG: | |
103 | return &phy_db->cfg; | |
104 | case IWL_PHY_DB_CALIB_NCH: | |
105 | return &phy_db->calib_nch; | |
106 | case IWL_PHY_DB_CALIB_CH: | |
107 | return &phy_db->calib_ch; | |
108 | case IWL_PHY_DB_CALIB_CHG_PAPD: | |
109 | if (chg_id < 0 || chg_id >= IWL_NUM_PAPD_CH_GROUPS) | |
110 | return NULL; | |
111 | return &phy_db->calib_ch_group_papd[chg_id]; | |
112 | case IWL_PHY_DB_CALIB_CHG_TXP: | |
113 | if (chg_id < 0 || chg_id >= IWL_NUM_TXP_CH_GROUPS) | |
114 | return NULL; | |
115 | return &phy_db->calib_ch_group_txp[chg_id]; | |
116 | default: | |
117 | return NULL; | |
118 | } | |
119 | return NULL; | |
120 | } | |
121 | ||
122 | static void iwl_phy_db_free_section(struct iwl_phy_db *phy_db, | |
123 | enum iwl_phy_db_section_type type, | |
124 | u16 chg_id) | |
125 | { | |
126 | struct iwl_phy_db_entry *entry = | |
127 | iwl_phy_db_get_section(phy_db, type, chg_id); | |
128 | if (!entry) | |
129 | return; | |
130 | ||
131 | kfree(entry->data); | |
132 | entry->data = NULL; | |
133 | entry->size = 0; | |
134 | } | |
135 | ||
136 | void iwl_phy_db_free(struct iwl_phy_db *phy_db) | |
137 | { | |
138 | int i; | |
139 | ||
140 | if (!phy_db) | |
141 | return; | |
142 | ||
143 | iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CFG, 0); | |
144 | iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_NCH, 0); | |
145 | iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_CH, 0); | |
146 | for (i = 0; i < IWL_NUM_PAPD_CH_GROUPS; i++) | |
147 | iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_CHG_PAPD, i); | |
148 | for (i = 0; i < IWL_NUM_TXP_CH_GROUPS; i++) | |
149 | iwl_phy_db_free_section(phy_db, IWL_PHY_DB_CALIB_CHG_TXP, i); | |
150 | ||
151 | kfree(phy_db); | |
152 | } | |
153 | ||
154 | int iwl_phy_db_set_section(struct iwl_phy_db *phy_db, | |
155 | enum iwl_phy_db_section_type type, u8 *data, | |
156 | u16 size, gfp_t alloc_ctx) | |
157 | { | |
158 | struct iwl_phy_db_entry *entry; | |
159 | u16 chg_id = 0; | |
160 | ||
161 | if (!phy_db) | |
162 | return -EINVAL; | |
163 | ||
164 | if (type == IWL_PHY_DB_CALIB_CHG_PAPD || | |
165 | type == IWL_PHY_DB_CALIB_CHG_TXP) | |
166 | chg_id = le16_to_cpup((__le16 *)data); | |
167 | ||
168 | entry = iwl_phy_db_get_section(phy_db, type, chg_id); | |
169 | if (!entry) | |
170 | return -EINVAL; | |
171 | ||
172 | kfree(entry->data); | |
173 | entry->data = kmemdup(data, size, alloc_ctx); | |
174 | if (!entry->data) { | |
175 | entry->size = 0; | |
176 | return -ENOMEM; | |
177 | } | |
178 | ||
179 | entry->size = size; | |
180 | ||
181 | if (type == IWL_PHY_DB_CALIB_CH) { | |
182 | phy_db->channel_num = le32_to_cpup((__le32 *)data); | |
183 | phy_db->channel_size = | |
184 | (size - CHANNEL_NUM_SIZE) / phy_db->channel_num; | |
185 | } | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static int is_valid_channel(u16 ch_id) | |
191 | { | |
192 | if (ch_id <= 14 || | |
193 | (36 <= ch_id && ch_id <= 64 && ch_id % 4 == 0) || | |
194 | (100 <= ch_id && ch_id <= 140 && ch_id % 4 == 0) || | |
195 | (145 <= ch_id && ch_id <= 165 && ch_id % 4 == 1)) | |
196 | return 1; | |
197 | return 0; | |
198 | } | |
199 | ||
200 | static u8 ch_id_to_ch_index(u16 ch_id) | |
201 | { | |
202 | if (WARN_ON(!is_valid_channel(ch_id))) | |
203 | return 0xff; | |
204 | ||
205 | if (ch_id <= 14) | |
206 | return ch_id - 1; | |
207 | if (ch_id <= 64) | |
208 | return (ch_id + 20) / 4; | |
209 | if (ch_id <= 140) | |
210 | return (ch_id - 12) / 4; | |
211 | return (ch_id - 13) / 4; | |
212 | } | |
213 | ||
214 | ||
215 | static u16 channel_id_to_papd(u16 ch_id) | |
216 | { | |
217 | if (WARN_ON(!is_valid_channel(ch_id))) | |
218 | return 0xff; | |
219 | ||
220 | if (1 <= ch_id && ch_id <= 14) | |
221 | return 0; | |
222 | if (36 <= ch_id && ch_id <= 64) | |
223 | return 1; | |
224 | if (100 <= ch_id && ch_id <= 140) | |
225 | return 2; | |
226 | return 3; | |
227 | } | |
228 | ||
229 | static u16 channel_id_to_txp(struct iwl_phy_db *phy_db, u16 ch_id) | |
230 | { | |
cfd8544e DS |
231 | struct iwl_phy_db_chg_txp *txp_chg; |
232 | int i; | |
233 | u8 ch_index = ch_id_to_ch_index(ch_id); | |
234 | if (ch_index == 0xff) | |
235 | return 0xff; | |
236 | ||
237 | for (i = 0; i < IWL_NUM_TXP_CH_GROUPS; i++) { | |
238 | txp_chg = (void *)phy_db->calib_ch_group_txp[i].data; | |
239 | if (!txp_chg) | |
240 | return 0xff; | |
241 | /* | |
242 | * Looking for the first channel group that its max channel is | |
243 | * higher then wanted channel. | |
244 | */ | |
245 | if (le16_to_cpu(txp_chg->max_channel_idx) >= ch_index) | |
246 | return i; | |
247 | } | |
248 | return 0xff; | |
aa27a703 DS |
249 | } |
250 | ||
251 | int iwl_phy_db_get_section_data(struct iwl_phy_db *phy_db, | |
252 | enum iwl_phy_db_section_type type, u8 **data, | |
253 | u16 *size, u16 ch_id) | |
254 | { | |
255 | struct iwl_phy_db_entry *entry; | |
256 | u32 channel_num; | |
257 | u32 channel_size; | |
258 | u16 ch_group_id = 0; | |
259 | u16 index; | |
260 | ||
261 | if (!phy_db) | |
262 | return -EINVAL; | |
263 | ||
264 | /* find wanted channel group */ | |
265 | if (type == IWL_PHY_DB_CALIB_CHG_PAPD) | |
266 | ch_group_id = channel_id_to_papd(ch_id); | |
267 | else if (type == IWL_PHY_DB_CALIB_CHG_TXP) | |
268 | ch_group_id = channel_id_to_txp(phy_db, ch_id); | |
269 | ||
270 | entry = iwl_phy_db_get_section(phy_db, type, ch_group_id); | |
271 | if (!entry) | |
272 | return -EINVAL; | |
273 | ||
274 | if (type == IWL_PHY_DB_CALIB_CH) { | |
275 | index = ch_id_to_ch_index(ch_id); | |
276 | channel_num = phy_db->channel_num; | |
277 | channel_size = phy_db->channel_size; | |
278 | if (index >= channel_num) { | |
279 | IWL_ERR(phy_db, "Wrong channel number %d", ch_id); | |
280 | return -EINVAL; | |
281 | } | |
282 | *data = entry->data + CHANNEL_NUM_SIZE + index * channel_size; | |
283 | *size = channel_size; | |
284 | } else { | |
285 | *data = entry->data; | |
286 | *size = entry->size; | |
287 | } | |
288 | return 0; | |
289 | } |