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4bc85c13 WYG |
1 | /****************************************************************************** |
2 | * | |
be663ab6 | 3 | * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. |
4bc85c13 WYG |
4 | * |
5 | * Portions of this file are derived from the ipw3945 project, as well | |
6 | * as portions of the ieee80211 subsystem header files. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of version 2 of the GNU General Public License as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution in the | |
22 | * file called LICENSE. | |
23 | * | |
24 | * Contact Information: | |
25 | * Intel Linux Wireless <ilw@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
30 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
31 | ||
32 | #include <linux/kernel.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/pci.h> | |
36 | #include <linux/pci-aspm.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/dma-mapping.h> | |
39 | #include <linux/delay.h> | |
40 | #include <linux/sched.h> | |
41 | #include <linux/skbuff.h> | |
42 | #include <linux/netdevice.h> | |
4bc85c13 WYG |
43 | #include <linux/firmware.h> |
44 | #include <linux/etherdevice.h> | |
45 | #include <linux/if_arp.h> | |
46 | ||
47 | #include <net/ieee80211_radiotap.h> | |
48 | #include <net/mac80211.h> | |
49 | ||
50 | #include <asm/div64.h> | |
51 | ||
52 | #define DRV_NAME "iwl3945" | |
53 | ||
d4459a99 | 54 | #include "commands.h" |
98613be0 | 55 | #include "common.h" |
e94a4099 | 56 | #include "3945.h" |
4bc85c13 | 57 | #include "iwl-spectrum.h" |
4bc85c13 WYG |
58 | |
59 | /* | |
60 | * module name, copyright, version, etc. | |
61 | */ | |
62 | ||
63 | #define DRV_DESCRIPTION \ | |
64 | "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux" | |
65 | ||
d3175167 | 66 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
67 | #define VD "d" |
68 | #else | |
69 | #define VD | |
70 | #endif | |
71 | ||
72 | /* | |
73 | * add "s" to indicate spectrum measurement included. | |
74 | * we add it here to be consistent with previous releases in which | |
75 | * this was configurable. | |
76 | */ | |
77 | #define DRV_VERSION IWLWIFI_VERSION VD "s" | |
be663ab6 | 78 | #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation" |
4bc85c13 WYG |
79 | #define DRV_AUTHOR "<ilw@linux.intel.com>" |
80 | ||
81 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
82 | MODULE_VERSION(DRV_VERSION); | |
83 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); | |
84 | MODULE_LICENSE("GPL"); | |
85 | ||
86 | /* module parameters */ | |
e2ebc833 | 87 | struct il_mod_params il3945_mod_params = { |
4bc85c13 WYG |
88 | .sw_crypto = 1, |
89 | .restart_fw = 1, | |
0263aa45 | 90 | .disable_hw_scan = 1, |
4bc85c13 WYG |
91 | /* the rest are 0 by default */ |
92 | }; | |
93 | ||
94 | /** | |
e2ebc833 | 95 | * il3945_get_antenna_flags - Get antenna flags for RXON command |
46bc8d4b | 96 | * @il: eeprom and antenna fields are used to determine antenna flags |
4bc85c13 | 97 | * |
46bc8d4b | 98 | * il->eeprom39 is used to determine if antenna AUX/MAIN are reversed |
e2ebc833 | 99 | * il3945_mod_params.antenna specifies the antenna diversity mode: |
4bc85c13 | 100 | * |
e2ebc833 SG |
101 | * IL_ANTENNA_DIVERSITY - NIC selects best antenna by itself |
102 | * IL_ANTENNA_MAIN - Force MAIN antenna | |
103 | * IL_ANTENNA_AUX - Force AUX antenna | |
4bc85c13 | 104 | */ |
e7392364 SG |
105 | __le32 |
106 | il3945_get_antenna_flags(const struct il_priv *il) | |
4bc85c13 | 107 | { |
46bc8d4b | 108 | struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; |
4bc85c13 | 109 | |
e2ebc833 SG |
110 | switch (il3945_mod_params.antenna) { |
111 | case IL_ANTENNA_DIVERSITY: | |
4bc85c13 WYG |
112 | return 0; |
113 | ||
e2ebc833 | 114 | case IL_ANTENNA_MAIN: |
4bc85c13 WYG |
115 | if (eeprom->antenna_switch_type) |
116 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; | |
117 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; | |
118 | ||
e2ebc833 | 119 | case IL_ANTENNA_AUX: |
4bc85c13 WYG |
120 | if (eeprom->antenna_switch_type) |
121 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; | |
122 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; | |
123 | } | |
124 | ||
125 | /* bad antenna selector value */ | |
9406f797 | 126 | IL_ERR("Bad antenna selector value (0x%x)\n", |
e7392364 | 127 | il3945_mod_params.antenna); |
4bc85c13 WYG |
128 | |
129 | return 0; /* "diversity" is default if error */ | |
130 | } | |
131 | ||
e7392364 SG |
132 | static int |
133 | il3945_set_ccmp_dynamic_key_info(struct il_priv *il, | |
134 | struct ieee80211_key_conf *keyconf, u8 sta_id) | |
4bc85c13 WYG |
135 | { |
136 | unsigned long flags; | |
137 | __le16 key_flags = 0; | |
138 | int ret; | |
139 | ||
140 | key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); | |
141 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
142 | ||
b16db50a | 143 | if (sta_id == il->hw_params.bcast_id) |
4bc85c13 WYG |
144 | key_flags |= STA_KEY_MULTICAST_MSK; |
145 | ||
146 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
147 | keyconf->hw_key_idx = keyconf->keyidx; | |
148 | key_flags &= ~STA_KEY_FLG_INVALID; | |
149 | ||
46bc8d4b SG |
150 | spin_lock_irqsave(&il->sta_lock, flags); |
151 | il->stations[sta_id].keyinfo.cipher = keyconf->cipher; | |
152 | il->stations[sta_id].keyinfo.keylen = keyconf->keylen; | |
e7392364 | 153 | memcpy(il->stations[sta_id].keyinfo.key, keyconf->key, keyconf->keylen); |
4bc85c13 | 154 | |
e7392364 | 155 | memcpy(il->stations[sta_id].sta.key.key, keyconf->key, keyconf->keylen); |
4bc85c13 | 156 | |
e7392364 SG |
157 | if ((il->stations[sta_id].sta.key. |
158 | key_flags & STA_KEY_FLG_ENCRYPT_MSK) == STA_KEY_FLG_NO_ENC) | |
46bc8d4b | 159 | il->stations[sta_id].sta.key.key_offset = |
e7392364 | 160 | il_get_free_ucode_key_idx(il); |
4bc85c13 | 161 | /* else, we are overriding an existing key => no need to allocated room |
e7392364 | 162 | * in uCode. */ |
4bc85c13 | 163 | |
46bc8d4b | 164 | WARN(il->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
e7392364 | 165 | "no space for a new key"); |
4bc85c13 | 166 | |
46bc8d4b SG |
167 | il->stations[sta_id].sta.key.key_flags = key_flags; |
168 | il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
169 | il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
4bc85c13 | 170 | |
58de00a4 | 171 | D_INFO("hwcrypto: modify ucode station key info\n"); |
4bc85c13 | 172 | |
e7392364 | 173 | ret = il_send_add_sta(il, &il->stations[sta_id].sta, CMD_ASYNC); |
4bc85c13 | 174 | |
46bc8d4b | 175 | spin_unlock_irqrestore(&il->sta_lock, flags); |
4bc85c13 WYG |
176 | |
177 | return ret; | |
178 | } | |
179 | ||
e7392364 SG |
180 | static int |
181 | il3945_set_tkip_dynamic_key_info(struct il_priv *il, | |
182 | struct ieee80211_key_conf *keyconf, u8 sta_id) | |
4bc85c13 WYG |
183 | { |
184 | return -EOPNOTSUPP; | |
185 | } | |
186 | ||
e7392364 SG |
187 | static int |
188 | il3945_set_wep_dynamic_key_info(struct il_priv *il, | |
189 | struct ieee80211_key_conf *keyconf, u8 sta_id) | |
4bc85c13 WYG |
190 | { |
191 | return -EOPNOTSUPP; | |
192 | } | |
193 | ||
e7392364 SG |
194 | static int |
195 | il3945_clear_sta_key_info(struct il_priv *il, u8 sta_id) | |
4bc85c13 WYG |
196 | { |
197 | unsigned long flags; | |
e2ebc833 | 198 | struct il_addsta_cmd sta_cmd; |
4bc85c13 | 199 | |
46bc8d4b SG |
200 | spin_lock_irqsave(&il->sta_lock, flags); |
201 | memset(&il->stations[sta_id].keyinfo, 0, sizeof(struct il_hw_key)); | |
e7392364 | 202 | memset(&il->stations[sta_id].sta.key, 0, sizeof(struct il4965_keyinfo)); |
46bc8d4b SG |
203 | il->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC; |
204 | il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
205 | il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
e7392364 SG |
206 | memcpy(&sta_cmd, &il->stations[sta_id].sta, |
207 | sizeof(struct il_addsta_cmd)); | |
46bc8d4b | 208 | spin_unlock_irqrestore(&il->sta_lock, flags); |
4bc85c13 | 209 | |
58de00a4 | 210 | D_INFO("hwcrypto: clear ucode station key info\n"); |
46bc8d4b | 211 | return il_send_add_sta(il, &sta_cmd, CMD_SYNC); |
4bc85c13 WYG |
212 | } |
213 | ||
e7392364 SG |
214 | static int |
215 | il3945_set_dynamic_key(struct il_priv *il, struct ieee80211_key_conf *keyconf, | |
216 | u8 sta_id) | |
4bc85c13 WYG |
217 | { |
218 | int ret = 0; | |
219 | ||
220 | keyconf->hw_key_idx = HW_KEY_DYNAMIC; | |
221 | ||
222 | switch (keyconf->cipher) { | |
223 | case WLAN_CIPHER_SUITE_CCMP: | |
46bc8d4b | 224 | ret = il3945_set_ccmp_dynamic_key_info(il, keyconf, sta_id); |
4bc85c13 WYG |
225 | break; |
226 | case WLAN_CIPHER_SUITE_TKIP: | |
46bc8d4b | 227 | ret = il3945_set_tkip_dynamic_key_info(il, keyconf, sta_id); |
4bc85c13 WYG |
228 | break; |
229 | case WLAN_CIPHER_SUITE_WEP40: | |
230 | case WLAN_CIPHER_SUITE_WEP104: | |
46bc8d4b | 231 | ret = il3945_set_wep_dynamic_key_info(il, keyconf, sta_id); |
4bc85c13 WYG |
232 | break; |
233 | default: | |
e7392364 | 234 | IL_ERR("Unknown alg: %s alg=%x\n", __func__, keyconf->cipher); |
4bc85c13 WYG |
235 | ret = -EINVAL; |
236 | } | |
237 | ||
58de00a4 | 238 | D_WEP("Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n", |
e7392364 | 239 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, sta_id, ret); |
4bc85c13 WYG |
240 | |
241 | return ret; | |
242 | } | |
243 | ||
e7392364 SG |
244 | static int |
245 | il3945_remove_static_key(struct il_priv *il) | |
4bc85c13 WYG |
246 | { |
247 | int ret = -EOPNOTSUPP; | |
248 | ||
249 | return ret; | |
250 | } | |
251 | ||
e7392364 SG |
252 | static int |
253 | il3945_set_static_key(struct il_priv *il, struct ieee80211_key_conf *key) | |
4bc85c13 WYG |
254 | { |
255 | if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
256 | key->cipher == WLAN_CIPHER_SUITE_WEP104) | |
257 | return -EOPNOTSUPP; | |
258 | ||
9406f797 | 259 | IL_ERR("Static key invalid: cipher %x\n", key->cipher); |
4bc85c13 WYG |
260 | return -EINVAL; |
261 | } | |
262 | ||
e7392364 SG |
263 | static void |
264 | il3945_clear_free_frames(struct il_priv *il) | |
4bc85c13 WYG |
265 | { |
266 | struct list_head *element; | |
267 | ||
e7392364 | 268 | D_INFO("%d frames on pre-allocated heap on clear.\n", il->frames_count); |
4bc85c13 | 269 | |
46bc8d4b SG |
270 | while (!list_empty(&il->free_frames)) { |
271 | element = il->free_frames.next; | |
4bc85c13 | 272 | list_del(element); |
e2ebc833 | 273 | kfree(list_entry(element, struct il3945_frame, list)); |
46bc8d4b | 274 | il->frames_count--; |
4bc85c13 WYG |
275 | } |
276 | ||
46bc8d4b | 277 | if (il->frames_count) { |
9406f797 | 278 | IL_WARN("%d frames still in use. Did we lose one?\n", |
e7392364 | 279 | il->frames_count); |
46bc8d4b | 280 | il->frames_count = 0; |
4bc85c13 WYG |
281 | } |
282 | } | |
283 | ||
e7392364 SG |
284 | static struct il3945_frame * |
285 | il3945_get_free_frame(struct il_priv *il) | |
4bc85c13 | 286 | { |
e2ebc833 | 287 | struct il3945_frame *frame; |
4bc85c13 | 288 | struct list_head *element; |
46bc8d4b | 289 | if (list_empty(&il->free_frames)) { |
4bc85c13 WYG |
290 | frame = kzalloc(sizeof(*frame), GFP_KERNEL); |
291 | if (!frame) { | |
9406f797 | 292 | IL_ERR("Could not allocate frame!\n"); |
4bc85c13 WYG |
293 | return NULL; |
294 | } | |
295 | ||
46bc8d4b | 296 | il->frames_count++; |
4bc85c13 WYG |
297 | return frame; |
298 | } | |
299 | ||
46bc8d4b | 300 | element = il->free_frames.next; |
4bc85c13 | 301 | list_del(element); |
e2ebc833 | 302 | return list_entry(element, struct il3945_frame, list); |
4bc85c13 WYG |
303 | } |
304 | ||
e7392364 SG |
305 | static void |
306 | il3945_free_frame(struct il_priv *il, struct il3945_frame *frame) | |
4bc85c13 WYG |
307 | { |
308 | memset(frame, 0, sizeof(*frame)); | |
46bc8d4b | 309 | list_add(&frame->list, &il->free_frames); |
4bc85c13 WYG |
310 | } |
311 | ||
e7392364 SG |
312 | unsigned int |
313 | il3945_fill_beacon_frame(struct il_priv *il, struct ieee80211_hdr *hdr, | |
314 | int left) | |
4bc85c13 WYG |
315 | { |
316 | ||
7c2cde2e | 317 | if (!il_is_associated(il) || !il->beacon_skb) |
4bc85c13 WYG |
318 | return 0; |
319 | ||
46bc8d4b | 320 | if (il->beacon_skb->len > left) |
4bc85c13 WYG |
321 | return 0; |
322 | ||
46bc8d4b | 323 | memcpy(hdr, il->beacon_skb->data, il->beacon_skb->len); |
4bc85c13 | 324 | |
46bc8d4b | 325 | return il->beacon_skb->len; |
4bc85c13 WYG |
326 | } |
327 | ||
e7392364 SG |
328 | static int |
329 | il3945_send_beacon_cmd(struct il_priv *il) | |
4bc85c13 | 330 | { |
e2ebc833 | 331 | struct il3945_frame *frame; |
4bc85c13 WYG |
332 | unsigned int frame_size; |
333 | int rc; | |
334 | u8 rate; | |
335 | ||
46bc8d4b | 336 | frame = il3945_get_free_frame(il); |
4bc85c13 WYG |
337 | |
338 | if (!frame) { | |
9406f797 | 339 | IL_ERR("Could not obtain free frame buffer for beacon " |
e7392364 | 340 | "command.\n"); |
4bc85c13 WYG |
341 | return -ENOMEM; |
342 | } | |
343 | ||
83007196 | 344 | rate = il_get_lowest_plcp(il); |
4bc85c13 | 345 | |
46bc8d4b | 346 | frame_size = il3945_hw_get_beacon_cmd(il, frame, rate); |
4bc85c13 | 347 | |
e7392364 | 348 | rc = il_send_cmd_pdu(il, C_TX_BEACON, frame_size, &frame->u.cmd[0]); |
4bc85c13 | 349 | |
46bc8d4b | 350 | il3945_free_frame(il, frame); |
4bc85c13 WYG |
351 | |
352 | return rc; | |
353 | } | |
354 | ||
e7392364 SG |
355 | static void |
356 | il3945_unset_hw_params(struct il_priv *il) | |
4bc85c13 | 357 | { |
46bc8d4b SG |
358 | if (il->_3945.shared_virt) |
359 | dma_free_coherent(&il->pci_dev->dev, | |
e2ebc833 | 360 | sizeof(struct il3945_shared), |
e7392364 | 361 | il->_3945.shared_virt, il->_3945.shared_phys); |
4bc85c13 WYG |
362 | } |
363 | ||
e7392364 SG |
364 | static void |
365 | il3945_build_tx_cmd_hwcrypto(struct il_priv *il, struct ieee80211_tx_info *info, | |
366 | struct il_device_cmd *cmd, | |
367 | struct sk_buff *skb_frag, int sta_id) | |
4bc85c13 | 368 | { |
e2ebc833 | 369 | struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload; |
46bc8d4b | 370 | struct il_hw_key *keyinfo = &il->stations[sta_id].keyinfo; |
4bc85c13 WYG |
371 | |
372 | tx_cmd->sec_ctl = 0; | |
373 | ||
374 | switch (keyinfo->cipher) { | |
375 | case WLAN_CIPHER_SUITE_CCMP: | |
376 | tx_cmd->sec_ctl = TX_CMD_SEC_CCM; | |
377 | memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen); | |
58de00a4 | 378 | D_TX("tx_cmd with AES hwcrypto\n"); |
4bc85c13 WYG |
379 | break; |
380 | ||
381 | case WLAN_CIPHER_SUITE_TKIP: | |
382 | break; | |
383 | ||
384 | case WLAN_CIPHER_SUITE_WEP104: | |
385 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
386 | /* fall through */ | |
387 | case WLAN_CIPHER_SUITE_WEP40: | |
e7392364 SG |
388 | tx_cmd->sec_ctl |= |
389 | TX_CMD_SEC_WEP | (info->control.hw_key-> | |
390 | hw_key_idx & TX_CMD_SEC_MSK) << | |
391 | TX_CMD_SEC_SHIFT; | |
4bc85c13 WYG |
392 | |
393 | memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen); | |
394 | ||
e7392364 SG |
395 | D_TX("Configuring packet for WEP encryption " "with key %d\n", |
396 | info->control.hw_key->hw_key_idx); | |
4bc85c13 WYG |
397 | break; |
398 | ||
399 | default: | |
9406f797 | 400 | IL_ERR("Unknown encode cipher %x\n", keyinfo->cipher); |
4bc85c13 WYG |
401 | break; |
402 | } | |
403 | } | |
404 | ||
405 | /* | |
4d69c752 | 406 | * handle build C_TX command notification. |
4bc85c13 | 407 | */ |
e7392364 SG |
408 | static void |
409 | il3945_build_tx_cmd_basic(struct il_priv *il, struct il_device_cmd *cmd, | |
410 | struct ieee80211_tx_info *info, | |
411 | struct ieee80211_hdr *hdr, u8 std_id) | |
4bc85c13 | 412 | { |
e2ebc833 | 413 | struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload; |
4bc85c13 WYG |
414 | __le32 tx_flags = tx_cmd->tx_flags; |
415 | __le16 fc = hdr->frame_control; | |
416 | ||
417 | tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
418 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) { | |
419 | tx_flags |= TX_CMD_FLG_ACK_MSK; | |
420 | if (ieee80211_is_mgmt(fc)) | |
421 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
422 | if (ieee80211_is_probe_resp(fc) && | |
423 | !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) | |
424 | tx_flags |= TX_CMD_FLG_TSF_MSK; | |
425 | } else { | |
426 | tx_flags &= (~TX_CMD_FLG_ACK_MSK); | |
427 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
428 | } | |
429 | ||
430 | tx_cmd->sta_id = std_id; | |
431 | if (ieee80211_has_morefrags(fc)) | |
432 | tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; | |
433 | ||
434 | if (ieee80211_is_data_qos(fc)) { | |
435 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
436 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
437 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
438 | } else { | |
439 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
440 | } | |
441 | ||
46bc8d4b | 442 | il_tx_cmd_protection(il, info, fc, &tx_flags); |
4bc85c13 WYG |
443 | |
444 | tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); | |
445 | if (ieee80211_is_mgmt(fc)) { | |
446 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
447 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); | |
448 | else | |
449 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); | |
450 | } else { | |
451 | tx_cmd->timeout.pm_frame_timeout = 0; | |
452 | } | |
453 | ||
454 | tx_cmd->driver_txop = 0; | |
455 | tx_cmd->tx_flags = tx_flags; | |
456 | tx_cmd->next_frame_len = 0; | |
457 | } | |
458 | ||
459 | /* | |
4d69c752 | 460 | * start C_TX command process |
4bc85c13 | 461 | */ |
e7392364 | 462 | static int |
36323f81 TH |
463 | il3945_tx_skb(struct il_priv *il, |
464 | struct ieee80211_sta *sta, | |
465 | struct sk_buff *skb) | |
4bc85c13 WYG |
466 | { |
467 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
468 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
e2ebc833 SG |
469 | struct il3945_tx_cmd *tx_cmd; |
470 | struct il_tx_queue *txq = NULL; | |
471 | struct il_queue *q = NULL; | |
472 | struct il_device_cmd *out_cmd; | |
473 | struct il_cmd_meta *out_meta; | |
4bc85c13 WYG |
474 | dma_addr_t phys_addr; |
475 | dma_addr_t txcmd_phys; | |
476 | int txq_id = skb_get_queue_mapping(skb); | |
477 | u16 len, idx, hdr_len; | |
478 | u8 id; | |
479 | u8 unicast; | |
480 | u8 sta_id; | |
481 | u8 tid = 0; | |
482 | __le16 fc; | |
483 | u8 wait_write_ptr = 0; | |
484 | unsigned long flags; | |
485 | ||
46bc8d4b SG |
486 | spin_lock_irqsave(&il->lock, flags); |
487 | if (il_is_rfkill(il)) { | |
58de00a4 | 488 | D_DROP("Dropping - RF KILL\n"); |
4bc85c13 WYG |
489 | goto drop_unlock; |
490 | } | |
491 | ||
e7392364 SG |
492 | if ((ieee80211_get_tx_rate(il->hw, info)->hw_value & 0xFF) == |
493 | IL_INVALID_RATE) { | |
9406f797 | 494 | IL_ERR("ERROR: No TX rate available.\n"); |
4bc85c13 WYG |
495 | goto drop_unlock; |
496 | } | |
497 | ||
498 | unicast = !is_multicast_ether_addr(hdr->addr1); | |
499 | id = 0; | |
500 | ||
501 | fc = hdr->frame_control; | |
502 | ||
d3175167 | 503 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 | 504 | if (ieee80211_is_auth(fc)) |
58de00a4 | 505 | D_TX("Sending AUTH frame\n"); |
4bc85c13 | 506 | else if (ieee80211_is_assoc_req(fc)) |
58de00a4 | 507 | D_TX("Sending ASSOC frame\n"); |
4bc85c13 | 508 | else if (ieee80211_is_reassoc_req(fc)) |
58de00a4 | 509 | D_TX("Sending REASSOC frame\n"); |
4bc85c13 WYG |
510 | #endif |
511 | ||
46bc8d4b | 512 | spin_unlock_irqrestore(&il->lock, flags); |
4bc85c13 WYG |
513 | |
514 | hdr_len = ieee80211_hdrlen(fc); | |
515 | ||
0c2c8852 | 516 | /* Find idx into station table for destination station */ |
36323f81 | 517 | sta_id = il_sta_id_or_broadcast(il, sta); |
e2ebc833 | 518 | if (sta_id == IL_INVALID_STATION) { |
e7392364 | 519 | D_DROP("Dropping - INVALID STATION: %pM\n", hdr->addr1); |
4bc85c13 WYG |
520 | goto drop; |
521 | } | |
522 | ||
58de00a4 | 523 | D_RATE("station Id %d\n", sta_id); |
4bc85c13 WYG |
524 | |
525 | if (ieee80211_is_data_qos(fc)) { | |
526 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
527 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
528 | if (unlikely(tid >= MAX_TID_COUNT)) | |
529 | goto drop; | |
530 | } | |
531 | ||
532 | /* Descriptor for chosen Tx queue */ | |
46bc8d4b | 533 | txq = &il->txq[txq_id]; |
4bc85c13 WYG |
534 | q = &txq->q; |
535 | ||
e2ebc833 | 536 | if ((il_queue_space(q) < q->high_mark)) |
4bc85c13 WYG |
537 | goto drop; |
538 | ||
46bc8d4b | 539 | spin_lock_irqsave(&il->lock, flags); |
4bc85c13 | 540 | |
0c2c8852 | 541 | idx = il_get_cmd_idx(q, q->write_ptr, 0); |
4bc85c13 | 542 | |
00ea99e1 | 543 | txq->skbs[q->write_ptr] = skb; |
4bc85c13 WYG |
544 | |
545 | /* Init first empty entry in queue's array of Tx/cmd buffers */ | |
546 | out_cmd = txq->cmd[idx]; | |
547 | out_meta = &txq->meta[idx]; | |
e2ebc833 | 548 | tx_cmd = (struct il3945_tx_cmd *)out_cmd->cmd.payload; |
4bc85c13 WYG |
549 | memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); |
550 | memset(tx_cmd, 0, sizeof(*tx_cmd)); | |
551 | ||
552 | /* | |
553 | * Set up the Tx-command (not MAC!) header. | |
0c2c8852 | 554 | * Store the chosen Tx queue and TFD idx within the sequence field; |
4bc85c13 WYG |
555 | * after Tx, uCode's Tx response will return this value so driver can |
556 | * locate the frame within the tx queue and do post-tx processing. | |
557 | */ | |
4d69c752 | 558 | out_cmd->hdr.cmd = C_TX; |
e7392364 SG |
559 | out_cmd->hdr.sequence = |
560 | cpu_to_le16((u16) | |
561 | (QUEUE_TO_SEQ(txq_id) | IDX_TO_SEQ(q->write_ptr))); | |
4bc85c13 WYG |
562 | |
563 | /* Copy MAC header from skb into command buffer */ | |
564 | memcpy(tx_cmd->hdr, hdr, hdr_len); | |
565 | ||
4bc85c13 | 566 | if (info->control.hw_key) |
46bc8d4b | 567 | il3945_build_tx_cmd_hwcrypto(il, info, out_cmd, skb, sta_id); |
4bc85c13 WYG |
568 | |
569 | /* TODO need this for burst mode later on */ | |
46bc8d4b | 570 | il3945_build_tx_cmd_basic(il, out_cmd, info, hdr, sta_id); |
4bc85c13 | 571 | |
81fb4613 | 572 | il3945_hw_build_tx_cmd_rate(il, out_cmd, info, hdr, sta_id); |
4bc85c13 WYG |
573 | |
574 | /* Total # bytes to be transmitted */ | |
e7392364 | 575 | len = (u16) skb->len; |
4bc85c13 WYG |
576 | tx_cmd->len = cpu_to_le16(len); |
577 | ||
46bc8d4b | 578 | il_update_stats(il, true, fc, len); |
4bc85c13 WYG |
579 | tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK; |
580 | tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK; | |
581 | ||
582 | if (!ieee80211_has_morefrags(hdr->frame_control)) { | |
583 | txq->need_update = 1; | |
584 | } else { | |
585 | wait_write_ptr = 1; | |
586 | txq->need_update = 0; | |
587 | } | |
588 | ||
e7392364 | 589 | D_TX("sequence nr = 0X%x\n", le16_to_cpu(out_cmd->hdr.sequence)); |
58de00a4 | 590 | D_TX("tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags)); |
46bc8d4b | 591 | il_print_hex_dump(il, IL_DL_TX, tx_cmd, sizeof(*tx_cmd)); |
e7392364 SG |
592 | il_print_hex_dump(il, IL_DL_TX, (u8 *) tx_cmd->hdr, |
593 | ieee80211_hdrlen(fc)); | |
4bc85c13 WYG |
594 | |
595 | /* | |
596 | * Use the first empty entry in this queue's command buffer array | |
597 | * to contain the Tx command and MAC header concatenated together | |
598 | * (payload data will be in another buffer). | |
599 | * Size of this varies, due to varying MAC header length. | |
600 | * If end is not dword aligned, we'll have 2 extra bytes at the end | |
601 | * of the MAC header (device reads on dword boundaries). | |
602 | * We'll tell device about this padding later. | |
603 | */ | |
e7392364 SG |
604 | len = |
605 | sizeof(struct il3945_tx_cmd) + sizeof(struct il_cmd_header) + | |
606 | hdr_len; | |
4bc85c13 WYG |
607 | len = (len + 3) & ~3; |
608 | ||
609 | /* Physical address of this Tx command's header (not MAC header!), | |
610 | * within command buffer array. */ | |
e7392364 SG |
611 | txcmd_phys = |
612 | pci_map_single(il->pci_dev, &out_cmd->hdr, len, PCI_DMA_TODEVICE); | |
4bc85c13 WYG |
613 | /* we do not map meta data ... so we can safely access address to |
614 | * provide to unmap command*/ | |
615 | dma_unmap_addr_set(out_meta, mapping, txcmd_phys); | |
616 | dma_unmap_len_set(out_meta, len, len); | |
617 | ||
618 | /* Add buffer containing Tx command and MAC(!) header to TFD's | |
619 | * first entry */ | |
1600b875 | 620 | il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, len, 1, 0); |
4bc85c13 WYG |
621 | |
622 | /* Set up TFD's 2nd entry to point directly to remainder of skb, | |
623 | * if any (802.11 null frames have no payload). */ | |
624 | len = skb->len - hdr_len; | |
625 | if (len) { | |
e7392364 SG |
626 | phys_addr = |
627 | pci_map_single(il->pci_dev, skb->data + hdr_len, len, | |
628 | PCI_DMA_TODEVICE); | |
1600b875 SG |
629 | il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, len, 0, |
630 | U32_PAD(len)); | |
4bc85c13 WYG |
631 | } |
632 | ||
0c2c8852 | 633 | /* Tell device the write idx *just past* this latest filled TFD */ |
e2ebc833 | 634 | q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); |
46bc8d4b SG |
635 | il_txq_update_write_ptr(il, txq); |
636 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 | 637 | |
e7392364 | 638 | if (il_queue_space(q) < q->high_mark && il->mac80211_registered) { |
4bc85c13 | 639 | if (wait_write_ptr) { |
46bc8d4b | 640 | spin_lock_irqsave(&il->lock, flags); |
4bc85c13 | 641 | txq->need_update = 1; |
46bc8d4b SG |
642 | il_txq_update_write_ptr(il, txq); |
643 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 WYG |
644 | } |
645 | ||
46bc8d4b | 646 | il_stop_queue(il, txq); |
4bc85c13 WYG |
647 | } |
648 | ||
649 | return 0; | |
650 | ||
651 | drop_unlock: | |
46bc8d4b | 652 | spin_unlock_irqrestore(&il->lock, flags); |
4bc85c13 WYG |
653 | drop: |
654 | return -1; | |
655 | } | |
656 | ||
e7392364 SG |
657 | static int |
658 | il3945_get_measurement(struct il_priv *il, | |
659 | struct ieee80211_measurement_params *params, u8 type) | |
4bc85c13 | 660 | { |
e2ebc833 | 661 | struct il_spectrum_cmd spectrum; |
dcae1c64 | 662 | struct il_rx_pkt *pkt; |
e2ebc833 | 663 | struct il_host_cmd cmd = { |
4d69c752 | 664 | .id = C_SPECTRUM_MEASUREMENT, |
4bc85c13 WYG |
665 | .data = (void *)&spectrum, |
666 | .flags = CMD_WANT_SKB, | |
667 | }; | |
668 | u32 add_time = le64_to_cpu(params->start_time); | |
669 | int rc; | |
670 | int spectrum_resp_status; | |
671 | int duration = le16_to_cpu(params->duration); | |
4bc85c13 | 672 | |
7c2cde2e | 673 | if (il_is_associated(il)) |
e7392364 SG |
674 | add_time = |
675 | il_usecs_to_beacons(il, | |
676 | le64_to_cpu(params->start_time) - | |
677 | il->_3945.last_tsf, | |
c8b03958 | 678 | le16_to_cpu(il->timing.beacon_interval)); |
4bc85c13 WYG |
679 | |
680 | memset(&spectrum, 0, sizeof(spectrum)); | |
681 | ||
682 | spectrum.channel_count = cpu_to_le16(1); | |
683 | spectrum.flags = | |
684 | RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK; | |
685 | spectrum.filter_flags = MEASUREMENT_FILTER_FLAG; | |
686 | cmd.len = sizeof(spectrum); | |
687 | spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len)); | |
688 | ||
7c2cde2e | 689 | if (il_is_associated(il)) |
4bc85c13 | 690 | spectrum.start_time = |
e7392364 | 691 | il_add_beacon_time(il, il->_3945.last_beacon_time, add_time, |
c8b03958 | 692 | le16_to_cpu(il->timing.beacon_interval)); |
4bc85c13 WYG |
693 | else |
694 | spectrum.start_time = 0; | |
695 | ||
696 | spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT); | |
697 | spectrum.channels[0].channel = params->channel; | |
698 | spectrum.channels[0].type = type; | |
c8b03958 | 699 | if (il->active.flags & RXON_FLG_BAND_24G_MSK) |
e7392364 SG |
700 | spectrum.flags |= |
701 | RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | | |
702 | RXON_FLG_TGG_PROTECT_MSK; | |
4bc85c13 | 703 | |
46bc8d4b | 704 | rc = il_send_cmd_sync(il, &cmd); |
4bc85c13 WYG |
705 | if (rc) |
706 | return rc; | |
707 | ||
dcae1c64 | 708 | pkt = (struct il_rx_pkt *)cmd.reply_page; |
e2ebc833 | 709 | if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { |
4d69c752 | 710 | IL_ERR("Bad return from N_RX_ON_ASSOC command\n"); |
4bc85c13 WYG |
711 | rc = -EIO; |
712 | } | |
713 | ||
714 | spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status); | |
715 | switch (spectrum_resp_status) { | |
716 | case 0: /* Command will be handled */ | |
717 | if (pkt->u.spectrum.id != 0xff) { | |
58de00a4 | 718 | D_INFO("Replaced existing measurement: %d\n", |
e7392364 | 719 | pkt->u.spectrum.id); |
46bc8d4b | 720 | il->measurement_status &= ~MEASUREMENT_READY; |
4bc85c13 | 721 | } |
46bc8d4b | 722 | il->measurement_status |= MEASUREMENT_ACTIVE; |
4bc85c13 WYG |
723 | rc = 0; |
724 | break; | |
725 | ||
726 | case 1: /* Command will not be handled */ | |
727 | rc = -EAGAIN; | |
728 | break; | |
729 | } | |
730 | ||
46bc8d4b | 731 | il_free_pages(il, cmd.reply_page); |
4bc85c13 WYG |
732 | |
733 | return rc; | |
734 | } | |
735 | ||
e7392364 SG |
736 | static void |
737 | il3945_hdl_alive(struct il_priv *il, struct il_rx_buf *rxb) | |
4bc85c13 | 738 | { |
dcae1c64 | 739 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e2ebc833 | 740 | struct il_alive_resp *palive; |
4bc85c13 WYG |
741 | struct delayed_work *pwork; |
742 | ||
743 | palive = &pkt->u.alive_frame; | |
744 | ||
e7392364 SG |
745 | D_INFO("Alive ucode status 0x%08X revision " "0x%01X 0x%01X\n", |
746 | palive->is_valid, palive->ver_type, palive->ver_subtype); | |
4bc85c13 WYG |
747 | |
748 | if (palive->ver_subtype == INITIALIZE_SUBTYPE) { | |
58de00a4 | 749 | D_INFO("Initialization Alive received.\n"); |
46bc8d4b | 750 | memcpy(&il->card_alive_init, &pkt->u.alive_frame, |
e2ebc833 | 751 | sizeof(struct il_alive_resp)); |
46bc8d4b | 752 | pwork = &il->init_alive_start; |
4bc85c13 | 753 | } else { |
58de00a4 | 754 | D_INFO("Runtime Alive received.\n"); |
46bc8d4b | 755 | memcpy(&il->card_alive, &pkt->u.alive_frame, |
e2ebc833 | 756 | sizeof(struct il_alive_resp)); |
46bc8d4b SG |
757 | pwork = &il->alive_start; |
758 | il3945_disable_events(il); | |
4bc85c13 WYG |
759 | } |
760 | ||
761 | /* We delay the ALIVE response by 5ms to | |
762 | * give the HW RF Kill time to activate... */ | |
763 | if (palive->is_valid == UCODE_VALID_OK) | |
e7392364 | 764 | queue_delayed_work(il->workqueue, pwork, msecs_to_jiffies(5)); |
4bc85c13 | 765 | else |
9406f797 | 766 | IL_WARN("uCode did not respond OK.\n"); |
4bc85c13 WYG |
767 | } |
768 | ||
e7392364 SG |
769 | static void |
770 | il3945_hdl_add_sta(struct il_priv *il, struct il_rx_buf *rxb) | |
4bc85c13 | 771 | { |
d3175167 | 772 | #ifdef CONFIG_IWLEGACY_DEBUG |
dcae1c64 | 773 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
4bc85c13 WYG |
774 | #endif |
775 | ||
4d69c752 | 776 | D_RX("Received C_ADD_STA: 0x%02X\n", pkt->u.status); |
4bc85c13 WYG |
777 | } |
778 | ||
e7392364 SG |
779 | static void |
780 | il3945_hdl_beacon(struct il_priv *il, struct il_rx_buf *rxb) | |
4bc85c13 | 781 | { |
dcae1c64 | 782 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e2ebc833 | 783 | struct il3945_beacon_notif *beacon = &(pkt->u.beacon_status); |
d3175167 | 784 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
785 | u8 rate = beacon->beacon_notify_hdr.rate; |
786 | ||
e7392364 SG |
787 | D_RX("beacon status %x retries %d iss %d " "tsf %d %d rate %d\n", |
788 | le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK, | |
789 | beacon->beacon_notify_hdr.failure_frame, | |
790 | le32_to_cpu(beacon->ibss_mgr_status), | |
791 | le32_to_cpu(beacon->high_tsf), le32_to_cpu(beacon->low_tsf), rate); | |
4bc85c13 WYG |
792 | #endif |
793 | ||
46bc8d4b | 794 | il->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); |
4bc85c13 | 795 | |
4bc85c13 WYG |
796 | } |
797 | ||
798 | /* Handle notification from uCode that card's power state is changing | |
799 | * due to software, hardware, or critical temperature RFKILL */ | |
e7392364 SG |
800 | static void |
801 | il3945_hdl_card_state(struct il_priv *il, struct il_rx_buf *rxb) | |
4bc85c13 | 802 | { |
dcae1c64 | 803 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
4bc85c13 | 804 | u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); |
46bc8d4b | 805 | unsigned long status = il->status; |
4bc85c13 | 806 | |
9406f797 | 807 | IL_WARN("Card state received: HW:%s SW:%s\n", |
e7392364 SG |
808 | (flags & HW_CARD_DISABLED) ? "Kill" : "On", |
809 | (flags & SW_CARD_DISABLED) ? "Kill" : "On"); | |
4bc85c13 | 810 | |
e7392364 | 811 | _il_wr(il, CSR_UCODE_DRV_GP1_SET, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
4bc85c13 WYG |
812 | |
813 | if (flags & HW_CARD_DISABLED) | |
bc269a8e | 814 | set_bit(S_RFKILL, &il->status); |
4bc85c13 | 815 | else |
bc269a8e | 816 | clear_bit(S_RFKILL, &il->status); |
4bc85c13 | 817 | |
46bc8d4b | 818 | il_scan_cancel(il); |
4bc85c13 | 819 | |
bc269a8e SG |
820 | if ((test_bit(S_RFKILL, &status) != |
821 | test_bit(S_RFKILL, &il->status))) | |
46bc8d4b | 822 | wiphy_rfkill_set_hw_state(il->hw->wiphy, |
bc269a8e | 823 | test_bit(S_RFKILL, &il->status)); |
4bc85c13 | 824 | else |
46bc8d4b | 825 | wake_up(&il->wait_command_queue); |
4bc85c13 WYG |
826 | } |
827 | ||
828 | /** | |
d0c72347 | 829 | * il3945_setup_handlers - Initialize Rx handler callbacks |
4bc85c13 WYG |
830 | * |
831 | * Setup the RX handlers for each of the reply types sent from the uCode | |
832 | * to the host. | |
833 | * | |
834 | * This function chains into the hardware specific files for them to setup | |
835 | * any hardware specific handlers as well. | |
836 | */ | |
e7392364 SG |
837 | static void |
838 | il3945_setup_handlers(struct il_priv *il) | |
4bc85c13 | 839 | { |
6e9848b4 SG |
840 | il->handlers[N_ALIVE] = il3945_hdl_alive; |
841 | il->handlers[C_ADD_STA] = il3945_hdl_add_sta; | |
842 | il->handlers[N_ERROR] = il_hdl_error; | |
d2dfb33e | 843 | il->handlers[N_CHANNEL_SWITCH] = il_hdl_csa; |
e7392364 | 844 | il->handlers[N_SPECTRUM_MEASUREMENT] = il_hdl_spectrum_measurement; |
d2dfb33e | 845 | il->handlers[N_PM_SLEEP] = il_hdl_pm_sleep; |
e7392364 | 846 | il->handlers[N_PM_DEBUG_STATS] = il_hdl_pm_debug_stats; |
d2dfb33e | 847 | il->handlers[N_BEACON] = il3945_hdl_beacon; |
4bc85c13 WYG |
848 | |
849 | /* | |
850 | * The same handler is used for both the REPLY to a discrete | |
ebf0d90d SG |
851 | * stats request from the host as well as for the periodic |
852 | * stats notifications (after received beacons) from the uCode. | |
4bc85c13 | 853 | */ |
d2dfb33e SG |
854 | il->handlers[C_STATS] = il3945_hdl_c_stats; |
855 | il->handlers[N_STATS] = il3945_hdl_stats; | |
4bc85c13 | 856 | |
46bc8d4b | 857 | il_setup_rx_scan_handlers(il); |
d2dfb33e | 858 | il->handlers[N_CARD_STATE] = il3945_hdl_card_state; |
4bc85c13 WYG |
859 | |
860 | /* Set up hardware specific Rx handlers */ | |
d0c72347 | 861 | il3945_hw_handler_setup(il); |
4bc85c13 WYG |
862 | } |
863 | ||
864 | /************************** RX-FUNCTIONS ****************************/ | |
865 | /* | |
866 | * Rx theory of operation | |
867 | * | |
868 | * The host allocates 32 DMA target addresses and passes the host address | |
3b98c7f4 | 869 | * to the firmware at register IL_RFDS_TBL_LOWER + N * RFD_SIZE where N is |
4bc85c13 WYG |
870 | * 0 to 31 |
871 | * | |
872 | * Rx Queue Indexes | |
0c2c8852 | 873 | * The host/firmware share two idx registers for managing the Rx buffers. |
4bc85c13 | 874 | * |
0c2c8852 | 875 | * The READ idx maps to the first position that the firmware may be writing |
4bc85c13 WYG |
876 | * to -- the driver can read up to (but not including) this position and get |
877 | * good data. | |
0c2c8852 | 878 | * The READ idx is managed by the firmware once the card is enabled. |
4bc85c13 | 879 | * |
0c2c8852 | 880 | * The WRITE idx maps to the last position the driver has read from -- the |
4bc85c13 WYG |
881 | * position preceding WRITE is the last slot the firmware can place a packet. |
882 | * | |
883 | * The queue is empty (no good data) if WRITE = READ - 1, and is full if | |
884 | * WRITE = READ. | |
885 | * | |
886 | * During initialization, the host sets up the READ queue position to the first | |
2d09b062 | 887 | * IDX position, and WRITE to the last (READ - 1 wrapped) |
4bc85c13 | 888 | * |
0c2c8852 SG |
889 | * When the firmware places a packet in a buffer, it will advance the READ idx |
890 | * and fire the RX interrupt. The driver can then query the READ idx and | |
891 | * process as many packets as possible, moving the WRITE idx forward as it | |
4bc85c13 WYG |
892 | * resets the Rx queue buffers with new memory. |
893 | * | |
894 | * The management in the driver is as follows: | |
895 | * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When | |
896 | * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled | |
897 | * to replenish the iwl->rxq->rx_free. | |
e2ebc833 | 898 | * + In il3945_rx_replenish (scheduled) if 'processed' != 'read' then the |
2d09b062 | 899 | * iwl->rxq is replenished and the READ IDX is updated (updating the |
0c2c8852 | 900 | * 'processed' and 'read' driver idxes as well) |
4bc85c13 | 901 | * + A received packet is processed and handed to the kernel network stack, |
0c2c8852 | 902 | * detached from the iwl->rxq. The driver 'processed' idx is updated. |
4bc85c13 WYG |
903 | * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free |
904 | * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ | |
2d09b062 | 905 | * IDX is not incremented and iwl->status(RX_STALLED) is set. If there |
4bc85c13 WYG |
906 | * were enough free buffers and RX_STALLED is set it is cleared. |
907 | * | |
908 | * | |
909 | * Driver sequence: | |
910 | * | |
e2ebc833 SG |
911 | * il3945_rx_replenish() Replenishes rx_free list from rx_used, and calls |
912 | * il3945_rx_queue_restock | |
913 | * il3945_rx_queue_restock() Moves available buffers from rx_free into Rx | |
4bc85c13 | 914 | * queue, updates firmware pointers, and updates |
0c2c8852 | 915 | * the WRITE idx. If insufficient rx_free buffers |
e2ebc833 | 916 | * are available, schedules il3945_rx_replenish |
4bc85c13 WYG |
917 | * |
918 | * -- enable interrupts -- | |
b73bb5f1 | 919 | * ISR - il3945_rx() Detach il_rx_bufs from pool up to the |
2d09b062 | 920 | * READ IDX, detaching the SKB from the pool. |
4bc85c13 | 921 | * Moves the packet buffer from queue to rx_used. |
e2ebc833 | 922 | * Calls il3945_rx_queue_restock to refill any empty |
4bc85c13 WYG |
923 | * slots. |
924 | * ... | |
925 | * | |
926 | */ | |
927 | ||
928 | /** | |
e2ebc833 | 929 | * il3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr |
4bc85c13 | 930 | */ |
e7392364 SG |
931 | static inline __le32 |
932 | il3945_dma_addr2rbd_ptr(struct il_priv *il, dma_addr_t dma_addr) | |
4bc85c13 | 933 | { |
e7392364 | 934 | return cpu_to_le32((u32) dma_addr); |
4bc85c13 WYG |
935 | } |
936 | ||
937 | /** | |
e2ebc833 | 938 | * il3945_rx_queue_restock - refill RX queue from pre-allocated pool |
4bc85c13 WYG |
939 | * |
940 | * If there are slots in the RX queue that need to be restocked, | |
941 | * and we have free pre-allocated buffers, fill the ranks as much | |
942 | * as we can, pulling from rx_free. | |
943 | * | |
0c2c8852 | 944 | * This moves the 'write' idx forward to catch up with 'processed', and |
4bc85c13 WYG |
945 | * also updates the memory address in the firmware to reference the new |
946 | * target buffer. | |
947 | */ | |
e7392364 SG |
948 | static void |
949 | il3945_rx_queue_restock(struct il_priv *il) | |
4bc85c13 | 950 | { |
46bc8d4b | 951 | struct il_rx_queue *rxq = &il->rxq; |
4bc85c13 | 952 | struct list_head *element; |
b73bb5f1 | 953 | struct il_rx_buf *rxb; |
4bc85c13 WYG |
954 | unsigned long flags; |
955 | int write; | |
956 | ||
957 | spin_lock_irqsave(&rxq->lock, flags); | |
958 | write = rxq->write & ~0x7; | |
232913b5 | 959 | while (il_rx_queue_space(rxq) > 0 && rxq->free_count) { |
4bc85c13 WYG |
960 | /* Get next free Rx buffer, remove from free list */ |
961 | element = rxq->rx_free.next; | |
b73bb5f1 | 962 | rxb = list_entry(element, struct il_rx_buf, list); |
4bc85c13 WYG |
963 | list_del(element); |
964 | ||
965 | /* Point to Rx buffer via next RBD in circular buffer */ | |
e7392364 SG |
966 | rxq->bd[rxq->write] = |
967 | il3945_dma_addr2rbd_ptr(il, rxb->page_dma); | |
4bc85c13 WYG |
968 | rxq->queue[rxq->write] = rxb; |
969 | rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; | |
970 | rxq->free_count--; | |
971 | } | |
972 | spin_unlock_irqrestore(&rxq->lock, flags); | |
973 | /* If the pre-allocated buffer pool is dropping low, schedule to | |
974 | * refill it */ | |
975 | if (rxq->free_count <= RX_LOW_WATERMARK) | |
46bc8d4b | 976 | queue_work(il->workqueue, &il->rx_replenish); |
4bc85c13 | 977 | |
4bc85c13 WYG |
978 | /* If we've added more space for the firmware to place data, tell it. |
979 | * Increment device's write pointer in multiples of 8. */ | |
232913b5 SG |
980 | if (rxq->write_actual != (rxq->write & ~0x7) || |
981 | abs(rxq->write - rxq->read) > 7) { | |
4bc85c13 WYG |
982 | spin_lock_irqsave(&rxq->lock, flags); |
983 | rxq->need_update = 1; | |
984 | spin_unlock_irqrestore(&rxq->lock, flags); | |
46bc8d4b | 985 | il_rx_queue_update_write_ptr(il, rxq); |
4bc85c13 WYG |
986 | } |
987 | } | |
988 | ||
989 | /** | |
e2ebc833 | 990 | * il3945_rx_replenish - Move all used packet from rx_used to rx_free |
4bc85c13 WYG |
991 | * |
992 | * When moving to rx_free an SKB is allocated for the slot. | |
993 | * | |
e2ebc833 | 994 | * Also restock the Rx queue via il3945_rx_queue_restock. |
4bc85c13 WYG |
995 | * This is called as a scheduled work item (except for during initialization) |
996 | */ | |
e7392364 SG |
997 | static void |
998 | il3945_rx_allocate(struct il_priv *il, gfp_t priority) | |
4bc85c13 | 999 | { |
46bc8d4b | 1000 | struct il_rx_queue *rxq = &il->rxq; |
4bc85c13 | 1001 | struct list_head *element; |
b73bb5f1 | 1002 | struct il_rx_buf *rxb; |
4bc85c13 WYG |
1003 | struct page *page; |
1004 | unsigned long flags; | |
1005 | gfp_t gfp_mask = priority; | |
1006 | ||
1007 | while (1) { | |
1008 | spin_lock_irqsave(&rxq->lock, flags); | |
1009 | ||
1010 | if (list_empty(&rxq->rx_used)) { | |
1011 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1012 | return; | |
1013 | } | |
1014 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1015 | ||
1016 | if (rxq->free_count > RX_LOW_WATERMARK) | |
1017 | gfp_mask |= __GFP_NOWARN; | |
1018 | ||
46bc8d4b | 1019 | if (il->hw_params.rx_page_order > 0) |
4bc85c13 WYG |
1020 | gfp_mask |= __GFP_COMP; |
1021 | ||
1022 | /* Alloc a new receive buffer */ | |
46bc8d4b | 1023 | page = alloc_pages(gfp_mask, il->hw_params.rx_page_order); |
4bc85c13 WYG |
1024 | if (!page) { |
1025 | if (net_ratelimit()) | |
58de00a4 | 1026 | D_INFO("Failed to allocate SKB buffer.\n"); |
232913b5 | 1027 | if (rxq->free_count <= RX_LOW_WATERMARK && |
4bc85c13 | 1028 | net_ratelimit()) |
1722f8e1 SG |
1029 | IL_ERR("Failed to allocate SKB buffer with %0x." |
1030 | "Only %u free buffers remaining.\n", | |
1031 | priority, rxq->free_count); | |
4bc85c13 WYG |
1032 | /* We don't reschedule replenish work here -- we will |
1033 | * call the restock method and if it still needs | |
1034 | * more buffers it will schedule replenish */ | |
1035 | break; | |
1036 | } | |
1037 | ||
1038 | spin_lock_irqsave(&rxq->lock, flags); | |
1039 | if (list_empty(&rxq->rx_used)) { | |
1040 | spin_unlock_irqrestore(&rxq->lock, flags); | |
46bc8d4b | 1041 | __free_pages(page, il->hw_params.rx_page_order); |
4bc85c13 WYG |
1042 | return; |
1043 | } | |
1044 | element = rxq->rx_used.next; | |
b73bb5f1 | 1045 | rxb = list_entry(element, struct il_rx_buf, list); |
4bc85c13 WYG |
1046 | list_del(element); |
1047 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1048 | ||
1049 | rxb->page = page; | |
1050 | /* Get physical address of RB/SKB */ | |
e7392364 SG |
1051 | rxb->page_dma = |
1052 | pci_map_page(il->pci_dev, page, 0, | |
1053 | PAGE_SIZE << il->hw_params.rx_page_order, | |
1054 | PCI_DMA_FROMDEVICE); | |
4bc85c13 WYG |
1055 | |
1056 | spin_lock_irqsave(&rxq->lock, flags); | |
1057 | ||
1058 | list_add_tail(&rxb->list, &rxq->rx_free); | |
1059 | rxq->free_count++; | |
46bc8d4b | 1060 | il->alloc_rxb_page++; |
4bc85c13 WYG |
1061 | |
1062 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1063 | } | |
1064 | } | |
1065 | ||
e7392364 SG |
1066 | void |
1067 | il3945_rx_queue_reset(struct il_priv *il, struct il_rx_queue *rxq) | |
4bc85c13 WYG |
1068 | { |
1069 | unsigned long flags; | |
1070 | int i; | |
1071 | spin_lock_irqsave(&rxq->lock, flags); | |
1072 | INIT_LIST_HEAD(&rxq->rx_free); | |
1073 | INIT_LIST_HEAD(&rxq->rx_used); | |
1074 | /* Fill the rx_used queue with _all_ of the Rx buffers */ | |
1075 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { | |
1076 | /* In the reset function, these buffers may have been allocated | |
1077 | * to an SKB, so we need to unmap and free potential storage */ | |
1078 | if (rxq->pool[i].page != NULL) { | |
46bc8d4b | 1079 | pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, |
e7392364 SG |
1080 | PAGE_SIZE << il->hw_params.rx_page_order, |
1081 | PCI_DMA_FROMDEVICE); | |
46bc8d4b | 1082 | __il_free_pages(il, rxq->pool[i].page); |
4bc85c13 WYG |
1083 | rxq->pool[i].page = NULL; |
1084 | } | |
1085 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
1086 | } | |
1087 | ||
1088 | /* Set us so that we have processed and used all buffers, but have | |
1089 | * not restocked the Rx queue with fresh buffers */ | |
1090 | rxq->read = rxq->write = 0; | |
1091 | rxq->write_actual = 0; | |
1092 | rxq->free_count = 0; | |
1093 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1094 | } | |
1095 | ||
e7392364 SG |
1096 | void |
1097 | il3945_rx_replenish(void *data) | |
4bc85c13 | 1098 | { |
46bc8d4b | 1099 | struct il_priv *il = data; |
4bc85c13 WYG |
1100 | unsigned long flags; |
1101 | ||
46bc8d4b | 1102 | il3945_rx_allocate(il, GFP_KERNEL); |
4bc85c13 | 1103 | |
46bc8d4b SG |
1104 | spin_lock_irqsave(&il->lock, flags); |
1105 | il3945_rx_queue_restock(il); | |
1106 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 WYG |
1107 | } |
1108 | ||
e7392364 SG |
1109 | static void |
1110 | il3945_rx_replenish_now(struct il_priv *il) | |
4bc85c13 | 1111 | { |
46bc8d4b | 1112 | il3945_rx_allocate(il, GFP_ATOMIC); |
4bc85c13 | 1113 | |
46bc8d4b | 1114 | il3945_rx_queue_restock(il); |
4bc85c13 WYG |
1115 | } |
1116 | ||
4bc85c13 WYG |
1117 | /* Assumes that the skb field of the buffers in 'pool' is kept accurate. |
1118 | * If an SKB has been detached, the POOL needs to have its SKB set to NULL | |
1119 | * This free routine walks the list of POOL entries and if SKB is set to | |
1120 | * non NULL it is unmapped and freed | |
1121 | */ | |
e7392364 SG |
1122 | static void |
1123 | il3945_rx_queue_free(struct il_priv *il, struct il_rx_queue *rxq) | |
4bc85c13 WYG |
1124 | { |
1125 | int i; | |
1126 | for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { | |
1127 | if (rxq->pool[i].page != NULL) { | |
46bc8d4b | 1128 | pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, |
e7392364 SG |
1129 | PAGE_SIZE << il->hw_params.rx_page_order, |
1130 | PCI_DMA_FROMDEVICE); | |
46bc8d4b | 1131 | __il_free_pages(il, rxq->pool[i].page); |
4bc85c13 WYG |
1132 | rxq->pool[i].page = NULL; |
1133 | } | |
1134 | } | |
1135 | ||
46bc8d4b | 1136 | dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, |
4bc85c13 | 1137 | rxq->bd_dma); |
46bc8d4b | 1138 | dma_free_coherent(&il->pci_dev->dev, sizeof(struct il_rb_status), |
4bc85c13 WYG |
1139 | rxq->rb_stts, rxq->rb_stts_dma); |
1140 | rxq->bd = NULL; | |
e7392364 | 1141 | rxq->rb_stts = NULL; |
4bc85c13 WYG |
1142 | } |
1143 | ||
4bc85c13 WYG |
1144 | /* Convert linear signal-to-noise ratio into dB */ |
1145 | static u8 ratio2dB[100] = { | |
1146 | /* 0 1 2 3 4 5 6 7 8 9 */ | |
e7392364 SG |
1147 | 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */ |
1148 | 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */ | |
1149 | 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */ | |
1150 | 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */ | |
1151 | 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */ | |
1152 | 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */ | |
1153 | 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */ | |
1154 | 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */ | |
1155 | 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */ | |
1156 | 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */ | |
4bc85c13 WYG |
1157 | }; |
1158 | ||
1159 | /* Calculates a relative dB value from a ratio of linear | |
1160 | * (i.e. not dB) signal levels. | |
1161 | * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ | |
e7392364 SG |
1162 | int |
1163 | il3945_calc_db_from_ratio(int sig_ratio) | |
4bc85c13 WYG |
1164 | { |
1165 | /* 1000:1 or higher just report as 60 dB */ | |
1166 | if (sig_ratio >= 1000) | |
1167 | return 60; | |
1168 | ||
1169 | /* 100:1 or higher, divide by 10 and use table, | |
1170 | * add 20 dB to make up for divide by 10 */ | |
1171 | if (sig_ratio >= 100) | |
e7392364 | 1172 | return 20 + (int)ratio2dB[sig_ratio / 10]; |
4bc85c13 WYG |
1173 | |
1174 | /* We shouldn't see this */ | |
1175 | if (sig_ratio < 1) | |
1176 | return 0; | |
1177 | ||
1178 | /* Use table for ratios 1:1 - 99:1 */ | |
1179 | return (int)ratio2dB[sig_ratio]; | |
1180 | } | |
1181 | ||
1182 | /** | |
e2ebc833 | 1183 | * il3945_rx_handle - Main entry function for receiving responses from uCode |
4bc85c13 | 1184 | * |
d0c72347 | 1185 | * Uses the il->handlers callback function array to invoke |
4bc85c13 WYG |
1186 | * the appropriate handlers, including command responses, |
1187 | * frame-received notifications, and other notifications. | |
1188 | */ | |
e7392364 SG |
1189 | static void |
1190 | il3945_rx_handle(struct il_priv *il) | |
4bc85c13 | 1191 | { |
b73bb5f1 | 1192 | struct il_rx_buf *rxb; |
dcae1c64 | 1193 | struct il_rx_pkt *pkt; |
46bc8d4b | 1194 | struct il_rx_queue *rxq = &il->rxq; |
4bc85c13 WYG |
1195 | u32 r, i; |
1196 | int reclaim; | |
1197 | unsigned long flags; | |
1198 | u8 fill_rx = 0; | |
1199 | u32 count = 8; | |
1200 | int total_empty = 0; | |
1201 | ||
0c2c8852 | 1202 | /* uCode's read idx (stored in shared DRAM) indicates the last Rx |
4bc85c13 | 1203 | * buffer that the driver may process (last buffer filled by ucode). */ |
e7392364 | 1204 | r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; |
4bc85c13 WYG |
1205 | i = rxq->read; |
1206 | ||
1207 | /* calculate total frames need to be restock after handling RX */ | |
1208 | total_empty = r - rxq->write_actual; | |
1209 | if (total_empty < 0) | |
1210 | total_empty += RX_QUEUE_SIZE; | |
1211 | ||
1212 | if (total_empty > (RX_QUEUE_SIZE / 2)) | |
1213 | fill_rx = 1; | |
1214 | /* Rx interrupt, but nothing sent from uCode */ | |
1215 | if (i == r) | |
58de00a4 | 1216 | D_RX("r = %d, i = %d\n", r, i); |
4bc85c13 WYG |
1217 | |
1218 | while (i != r) { | |
1219 | int len; | |
1220 | ||
1221 | rxb = rxq->queue[i]; | |
1222 | ||
1223 | /* If an RXB doesn't have a Rx queue slot associated with it, | |
1224 | * then a bug has been introduced in the queue refilling | |
1225 | * routines -- catch it here */ | |
1226 | BUG_ON(rxb == NULL); | |
1227 | ||
1228 | rxq->queue[i] = NULL; | |
1229 | ||
46bc8d4b SG |
1230 | pci_unmap_page(il->pci_dev, rxb->page_dma, |
1231 | PAGE_SIZE << il->hw_params.rx_page_order, | |
4bc85c13 WYG |
1232 | PCI_DMA_FROMDEVICE); |
1233 | pkt = rxb_addr(rxb); | |
1234 | ||
e94a4099 | 1235 | len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; |
e7392364 | 1236 | len += sizeof(u32); /* account for status word */ |
4bc85c13 WYG |
1237 | |
1238 | /* Reclaim a command buffer only if this packet is a response | |
1239 | * to a (driver-originated) command. | |
1240 | * If the packet (e.g. Rx frame) originated from uCode, | |
1241 | * there is no command buffer to reclaim. | |
1242 | * Ucode should set SEQ_RX_FRAME bit if ucode-originated, | |
1243 | * but apparently a few don't get set; catch them here. */ | |
1244 | reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) && | |
e7392364 | 1245 | pkt->hdr.cmd != N_STATS && pkt->hdr.cmd != C_TX; |
4bc85c13 WYG |
1246 | |
1247 | /* Based on type of command response or notification, | |
1248 | * handle those that need handling via function in | |
d0c72347 SG |
1249 | * handlers table. See il3945_setup_handlers() */ |
1250 | if (il->handlers[pkt->hdr.cmd]) { | |
58de00a4 | 1251 | D_RX("r = %d, i = %d, %s, 0x%02x\n", r, i, |
e7392364 | 1252 | il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); |
d0c72347 SG |
1253 | il->isr_stats.handlers[pkt->hdr.cmd]++; |
1254 | il->handlers[pkt->hdr.cmd] (il, rxb); | |
4bc85c13 WYG |
1255 | } else { |
1256 | /* No handling needed */ | |
e7392364 SG |
1257 | D_RX("r %d i %d No handler needed for %s, 0x%02x\n", r, |
1258 | i, il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); | |
4bc85c13 WYG |
1259 | } |
1260 | ||
1261 | /* | |
1262 | * XXX: After here, we should always check rxb->page | |
1263 | * against NULL before touching it or its virtual | |
d0c72347 | 1264 | * memory (pkt). Because some handler might have |
4bc85c13 WYG |
1265 | * already taken or freed the pages. |
1266 | */ | |
1267 | ||
1268 | if (reclaim) { | |
1269 | /* Invoke any callbacks, transfer the buffer to caller, | |
e2ebc833 | 1270 | * and fire off the (possibly) blocking il_send_cmd() |
4bc85c13 WYG |
1271 | * as we reclaim the driver command queue */ |
1272 | if (rxb->page) | |
46bc8d4b | 1273 | il_tx_cmd_complete(il, rxb); |
4bc85c13 | 1274 | else |
9406f797 | 1275 | IL_WARN("Claim null rxb?\n"); |
4bc85c13 WYG |
1276 | } |
1277 | ||
1278 | /* Reuse the page if possible. For notification packets and | |
1279 | * SKBs that fail to Rx correctly, add them back into the | |
1280 | * rx_free list for reuse later. */ | |
1281 | spin_lock_irqsave(&rxq->lock, flags); | |
1282 | if (rxb->page != NULL) { | |
e7392364 SG |
1283 | rxb->page_dma = |
1284 | pci_map_page(il->pci_dev, rxb->page, 0, | |
1285 | PAGE_SIZE << il->hw_params. | |
1286 | rx_page_order, PCI_DMA_FROMDEVICE); | |
4bc85c13 WYG |
1287 | list_add_tail(&rxb->list, &rxq->rx_free); |
1288 | rxq->free_count++; | |
1289 | } else | |
1290 | list_add_tail(&rxb->list, &rxq->rx_used); | |
1291 | ||
1292 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1293 | ||
1294 | i = (i + 1) & RX_QUEUE_MASK; | |
1295 | /* If there are a lot of unused frames, | |
1296 | * restock the Rx queue so ucode won't assert. */ | |
1297 | if (fill_rx) { | |
1298 | count++; | |
1299 | if (count >= 8) { | |
1300 | rxq->read = i; | |
46bc8d4b | 1301 | il3945_rx_replenish_now(il); |
4bc85c13 WYG |
1302 | count = 0; |
1303 | } | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | /* Backtrack one entry */ | |
1308 | rxq->read = i; | |
1309 | if (fill_rx) | |
46bc8d4b | 1310 | il3945_rx_replenish_now(il); |
4bc85c13 | 1311 | else |
46bc8d4b | 1312 | il3945_rx_queue_restock(il); |
4bc85c13 WYG |
1313 | } |
1314 | ||
1315 | /* call this function to flush any scheduled tasklet */ | |
e7392364 SG |
1316 | static inline void |
1317 | il3945_synchronize_irq(struct il_priv *il) | |
4bc85c13 | 1318 | { |
e7392364 | 1319 | /* wait to make sure we flush pending tasklet */ |
46bc8d4b SG |
1320 | synchronize_irq(il->pci_dev->irq); |
1321 | tasklet_kill(&il->irq_tasklet); | |
4bc85c13 WYG |
1322 | } |
1323 | ||
e7392364 SG |
1324 | static const char * |
1325 | il3945_desc_lookup(int i) | |
4bc85c13 WYG |
1326 | { |
1327 | switch (i) { | |
1328 | case 1: | |
1329 | return "FAIL"; | |
1330 | case 2: | |
1331 | return "BAD_PARAM"; | |
1332 | case 3: | |
1333 | return "BAD_CHECKSUM"; | |
1334 | case 4: | |
1335 | return "NMI_INTERRUPT"; | |
1336 | case 5: | |
1337 | return "SYSASSERT"; | |
1338 | case 6: | |
1339 | return "FATAL_ERROR"; | |
1340 | } | |
1341 | ||
1342 | return "UNKNOWN"; | |
1343 | } | |
1344 | ||
1345 | #define ERROR_START_OFFSET (1 * sizeof(u32)) | |
1346 | #define ERROR_ELEM_SIZE (7 * sizeof(u32)) | |
1347 | ||
e7392364 SG |
1348 | void |
1349 | il3945_dump_nic_error_log(struct il_priv *il) | |
4bc85c13 WYG |
1350 | { |
1351 | u32 i; | |
1352 | u32 desc, time, count, base, data1; | |
1353 | u32 blink1, blink2, ilink1, ilink2; | |
1354 | ||
46bc8d4b | 1355 | base = le32_to_cpu(il->card_alive.error_event_table_ptr); |
4bc85c13 | 1356 | |
e2ebc833 | 1357 | if (!il3945_hw_valid_rtc_data_addr(base)) { |
9406f797 | 1358 | IL_ERR("Not valid error log pointer 0x%08X\n", base); |
4bc85c13 WYG |
1359 | return; |
1360 | } | |
1361 | ||
46bc8d4b | 1362 | count = il_read_targ_mem(il, base); |
4bc85c13 WYG |
1363 | |
1364 | if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { | |
9406f797 | 1365 | IL_ERR("Start IWL Error Log Dump:\n"); |
e7392364 | 1366 | IL_ERR("Status: 0x%08lX, count: %d\n", il->status, count); |
4bc85c13 WYG |
1367 | } |
1368 | ||
9406f797 | 1369 | IL_ERR("Desc Time asrtPC blink2 " |
e7392364 | 1370 | "ilink1 nmiPC Line\n"); |
4bc85c13 WYG |
1371 | for (i = ERROR_START_OFFSET; |
1372 | i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET; | |
1373 | i += ERROR_ELEM_SIZE) { | |
46bc8d4b | 1374 | desc = il_read_targ_mem(il, base + i); |
e7392364 SG |
1375 | time = il_read_targ_mem(il, base + i + 1 * sizeof(u32)); |
1376 | blink1 = il_read_targ_mem(il, base + i + 2 * sizeof(u32)); | |
1377 | blink2 = il_read_targ_mem(il, base + i + 3 * sizeof(u32)); | |
1378 | ilink1 = il_read_targ_mem(il, base + i + 4 * sizeof(u32)); | |
1379 | ilink2 = il_read_targ_mem(il, base + i + 5 * sizeof(u32)); | |
1380 | data1 = il_read_targ_mem(il, base + i + 6 * sizeof(u32)); | |
4bc85c13 | 1381 | |
e7392364 SG |
1382 | IL_ERR("%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n", |
1383 | il3945_desc_lookup(desc), desc, time, blink1, blink2, | |
1384 | ilink1, ilink2, data1); | |
4bc85c13 WYG |
1385 | } |
1386 | } | |
1387 | ||
e7392364 SG |
1388 | static void |
1389 | il3945_irq_tasklet(struct il_priv *il) | |
4bc85c13 WYG |
1390 | { |
1391 | u32 inta, handled = 0; | |
1392 | u32 inta_fh; | |
1393 | unsigned long flags; | |
d3175167 | 1394 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
1395 | u32 inta_mask; |
1396 | #endif | |
1397 | ||
46bc8d4b | 1398 | spin_lock_irqsave(&il->lock, flags); |
4bc85c13 WYG |
1399 | |
1400 | /* Ack/clear/reset pending uCode interrupts. | |
1401 | * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, | |
1402 | * and will clear only when CSR_FH_INT_STATUS gets cleared. */ | |
841b2cca SG |
1403 | inta = _il_rd(il, CSR_INT); |
1404 | _il_wr(il, CSR_INT, inta); | |
4bc85c13 WYG |
1405 | |
1406 | /* Ack/clear/reset pending flow-handler (DMA) interrupts. | |
1407 | * Any new interrupts that happen after this, either while we're | |
1408 | * in this tasklet, or later, will show up in next ISR/tasklet. */ | |
841b2cca SG |
1409 | inta_fh = _il_rd(il, CSR_FH_INT_STATUS); |
1410 | _il_wr(il, CSR_FH_INT_STATUS, inta_fh); | |
4bc85c13 | 1411 | |
d3175167 | 1412 | #ifdef CONFIG_IWLEGACY_DEBUG |
46bc8d4b | 1413 | if (il_get_debug_level(il) & IL_DL_ISR) { |
4bc85c13 | 1414 | /* just for debug */ |
841b2cca | 1415 | inta_mask = _il_rd(il, CSR_INT_MASK); |
e7392364 SG |
1416 | D_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, |
1417 | inta_mask, inta_fh); | |
4bc85c13 WYG |
1418 | } |
1419 | #endif | |
1420 | ||
46bc8d4b | 1421 | spin_unlock_irqrestore(&il->lock, flags); |
4bc85c13 WYG |
1422 | |
1423 | /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not | |
1424 | * atomic, make sure that inta covers all the interrupts that | |
1425 | * we've discovered, even if FH interrupt came in just after | |
1426 | * reading CSR_INT. */ | |
1427 | if (inta_fh & CSR39_FH_INT_RX_MASK) | |
1428 | inta |= CSR_INT_BIT_FH_RX; | |
1429 | if (inta_fh & CSR39_FH_INT_TX_MASK) | |
1430 | inta |= CSR_INT_BIT_FH_TX; | |
1431 | ||
1432 | /* Now service all interrupt bits discovered above. */ | |
1433 | if (inta & CSR_INT_BIT_HW_ERR) { | |
9406f797 | 1434 | IL_ERR("Hardware error detected. Restarting.\n"); |
4bc85c13 WYG |
1435 | |
1436 | /* Tell the device to stop sending interrupts */ | |
46bc8d4b | 1437 | il_disable_interrupts(il); |
4bc85c13 | 1438 | |
46bc8d4b SG |
1439 | il->isr_stats.hw++; |
1440 | il_irq_handle_error(il); | |
4bc85c13 WYG |
1441 | |
1442 | handled |= CSR_INT_BIT_HW_ERR; | |
1443 | ||
1444 | return; | |
1445 | } | |
d3175167 | 1446 | #ifdef CONFIG_IWLEGACY_DEBUG |
46bc8d4b | 1447 | if (il_get_debug_level(il) & (IL_DL_ISR)) { |
4bc85c13 WYG |
1448 | /* NIC fires this, but we don't use it, redundant with WAKEUP */ |
1449 | if (inta & CSR_INT_BIT_SCD) { | |
58de00a4 | 1450 | D_ISR("Scheduler finished to transmit " |
e7392364 | 1451 | "the frame/frames.\n"); |
46bc8d4b | 1452 | il->isr_stats.sch++; |
4bc85c13 WYG |
1453 | } |
1454 | ||
1455 | /* Alive notification via Rx interrupt will do the real work */ | |
1456 | if (inta & CSR_INT_BIT_ALIVE) { | |
58de00a4 | 1457 | D_ISR("Alive interrupt\n"); |
46bc8d4b | 1458 | il->isr_stats.alive++; |
4bc85c13 WYG |
1459 | } |
1460 | } | |
1461 | #endif | |
1462 | /* Safely ignore these bits for debug checks below */ | |
1463 | inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); | |
1464 | ||
1465 | /* Error detected by uCode */ | |
1466 | if (inta & CSR_INT_BIT_SW_ERR) { | |
e7392364 SG |
1467 | IL_ERR("Microcode SW error detected. " "Restarting 0x%X.\n", |
1468 | inta); | |
46bc8d4b SG |
1469 | il->isr_stats.sw++; |
1470 | il_irq_handle_error(il); | |
4bc85c13 WYG |
1471 | handled |= CSR_INT_BIT_SW_ERR; |
1472 | } | |
1473 | ||
1474 | /* uCode wakes up after power-down sleep */ | |
1475 | if (inta & CSR_INT_BIT_WAKEUP) { | |
58de00a4 | 1476 | D_ISR("Wakeup interrupt\n"); |
46bc8d4b SG |
1477 | il_rx_queue_update_write_ptr(il, &il->rxq); |
1478 | il_txq_update_write_ptr(il, &il->txq[0]); | |
1479 | il_txq_update_write_ptr(il, &il->txq[1]); | |
1480 | il_txq_update_write_ptr(il, &il->txq[2]); | |
1481 | il_txq_update_write_ptr(il, &il->txq[3]); | |
1482 | il_txq_update_write_ptr(il, &il->txq[4]); | |
1483 | il_txq_update_write_ptr(il, &il->txq[5]); | |
1484 | ||
1485 | il->isr_stats.wakeup++; | |
4bc85c13 WYG |
1486 | handled |= CSR_INT_BIT_WAKEUP; |
1487 | } | |
1488 | ||
1489 | /* All uCode command responses, including Tx command responses, | |
1490 | * Rx "responses" (frame-received notification), and other | |
1491 | * notifications from uCode come through here*/ | |
1492 | if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { | |
46bc8d4b SG |
1493 | il3945_rx_handle(il); |
1494 | il->isr_stats.rx++; | |
4bc85c13 WYG |
1495 | handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); |
1496 | } | |
1497 | ||
1498 | if (inta & CSR_INT_BIT_FH_TX) { | |
58de00a4 | 1499 | D_ISR("Tx interrupt\n"); |
46bc8d4b | 1500 | il->isr_stats.tx++; |
4bc85c13 | 1501 | |
841b2cca | 1502 | _il_wr(il, CSR_FH_INT_STATUS, (1 << 6)); |
e7392364 | 1503 | il_wr(il, FH39_TCSR_CREDIT(FH39_SRVC_CHNL), 0x0); |
4bc85c13 WYG |
1504 | handled |= CSR_INT_BIT_FH_TX; |
1505 | } | |
1506 | ||
1507 | if (inta & ~handled) { | |
9406f797 | 1508 | IL_ERR("Unhandled INTA bits 0x%08x\n", inta & ~handled); |
46bc8d4b | 1509 | il->isr_stats.unhandled++; |
4bc85c13 WYG |
1510 | } |
1511 | ||
46bc8d4b | 1512 | if (inta & ~il->inta_mask) { |
9406f797 | 1513 | IL_WARN("Disabled INTA bits 0x%08x were pending\n", |
e7392364 | 1514 | inta & ~il->inta_mask); |
53143a18 | 1515 | IL_WARN(" with inta_fh = 0x%08x\n", inta_fh); |
4bc85c13 WYG |
1516 | } |
1517 | ||
1518 | /* Re-enable all interrupts */ | |
1519 | /* only Re-enable if disabled by irq */ | |
a6766ccd | 1520 | if (test_bit(S_INT_ENABLED, &il->status)) |
46bc8d4b | 1521 | il_enable_interrupts(il); |
4bc85c13 | 1522 | |
d3175167 | 1523 | #ifdef CONFIG_IWLEGACY_DEBUG |
46bc8d4b | 1524 | if (il_get_debug_level(il) & (IL_DL_ISR)) { |
841b2cca SG |
1525 | inta = _il_rd(il, CSR_INT); |
1526 | inta_mask = _il_rd(il, CSR_INT_MASK); | |
1527 | inta_fh = _il_rd(il, CSR_FH_INT_STATUS); | |
58de00a4 | 1528 | D_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " |
e7392364 | 1529 | "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); |
4bc85c13 WYG |
1530 | } |
1531 | #endif | |
1532 | } | |
1533 | ||
e7392364 SG |
1534 | static int |
1535 | il3945_get_channels_for_scan(struct il_priv *il, enum ieee80211_band band, | |
1536 | u8 is_active, u8 n_probes, | |
1537 | struct il3945_scan_channel *scan_ch, | |
1538 | struct ieee80211_vif *vif) | |
4bc85c13 WYG |
1539 | { |
1540 | struct ieee80211_channel *chan; | |
1541 | const struct ieee80211_supported_band *sband; | |
e2ebc833 | 1542 | const struct il_channel_info *ch_info; |
4bc85c13 WYG |
1543 | u16 passive_dwell = 0; |
1544 | u16 active_dwell = 0; | |
1545 | int added, i; | |
1546 | ||
46bc8d4b | 1547 | sband = il_get_hw_mode(il, band); |
4bc85c13 WYG |
1548 | if (!sband) |
1549 | return 0; | |
1550 | ||
46bc8d4b SG |
1551 | active_dwell = il_get_active_dwell_time(il, band, n_probes); |
1552 | passive_dwell = il_get_passive_dwell_time(il, band, vif); | |
4bc85c13 WYG |
1553 | |
1554 | if (passive_dwell <= active_dwell) | |
1555 | passive_dwell = active_dwell + 1; | |
1556 | ||
46bc8d4b SG |
1557 | for (i = 0, added = 0; i < il->scan_request->n_channels; i++) { |
1558 | chan = il->scan_request->channels[i]; | |
4bc85c13 WYG |
1559 | |
1560 | if (chan->band != band) | |
1561 | continue; | |
1562 | ||
1563 | scan_ch->channel = chan->hw_value; | |
1564 | ||
e7392364 | 1565 | ch_info = il_get_channel_info(il, band, scan_ch->channel); |
e2ebc833 | 1566 | if (!il_is_channel_valid(ch_info)) { |
e7392364 | 1567 | D_SCAN("Channel %d is INVALID for this band.\n", |
be663ab6 | 1568 | scan_ch->channel); |
4bc85c13 WYG |
1569 | continue; |
1570 | } | |
1571 | ||
1572 | scan_ch->active_dwell = cpu_to_le16(active_dwell); | |
1573 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); | |
1574 | /* If passive , set up for auto-switch | |
1575 | * and use long active_dwell time. | |
1576 | */ | |
e2ebc833 | 1577 | if (!is_active || il_is_channel_passive(ch_info) || |
4bc85c13 WYG |
1578 | (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) { |
1579 | scan_ch->type = 0; /* passive */ | |
46bc8d4b | 1580 | if (IL_UCODE_API(il->ucode_ver) == 1) |
e7392364 SG |
1581 | scan_ch->active_dwell = |
1582 | cpu_to_le16(passive_dwell - 1); | |
4bc85c13 WYG |
1583 | } else { |
1584 | scan_ch->type = 1; /* active */ | |
1585 | } | |
1586 | ||
1587 | /* Set direct probe bits. These may be used both for active | |
1588 | * scan channels (probes gets sent right away), | |
1589 | * or for passive channels (probes get se sent only after | |
1590 | * hearing clear Rx packet).*/ | |
46bc8d4b | 1591 | if (IL_UCODE_API(il->ucode_ver) >= 2) { |
4bc85c13 | 1592 | if (n_probes) |
d3175167 | 1593 | scan_ch->type |= IL39_SCAN_PROBE_MASK(n_probes); |
4bc85c13 WYG |
1594 | } else { |
1595 | /* uCode v1 does not allow setting direct probe bits on | |
1596 | * passive channel. */ | |
1597 | if ((scan_ch->type & 1) && n_probes) | |
d3175167 | 1598 | scan_ch->type |= IL39_SCAN_PROBE_MASK(n_probes); |
4bc85c13 WYG |
1599 | } |
1600 | ||
1601 | /* Set txpower levels to defaults */ | |
1602 | scan_ch->tpc.dsp_atten = 110; | |
1603 | /* scan_pwr_info->tpc.dsp_atten; */ | |
1604 | ||
1605 | /*scan_pwr_info->tpc.tx_gain; */ | |
1606 | if (band == IEEE80211_BAND_5GHZ) | |
1607 | scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; | |
1608 | else { | |
1609 | scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); | |
1610 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use | |
1611 | * power level: | |
1612 | * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3; | |
1613 | */ | |
1614 | } | |
1615 | ||
e7392364 SG |
1616 | D_SCAN("Scanning %d [%s %d]\n", scan_ch->channel, |
1617 | (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", | |
1618 | (scan_ch->type & 1) ? active_dwell : passive_dwell); | |
4bc85c13 WYG |
1619 | |
1620 | scan_ch++; | |
1621 | added++; | |
1622 | } | |
1623 | ||
58de00a4 | 1624 | D_SCAN("total channels to scan %d\n", added); |
4bc85c13 WYG |
1625 | return added; |
1626 | } | |
1627 | ||
e7392364 SG |
1628 | static void |
1629 | il3945_init_hw_rates(struct il_priv *il, struct ieee80211_rate *rates) | |
4bc85c13 WYG |
1630 | { |
1631 | int i; | |
1632 | ||
2eb05816 | 1633 | for (i = 0; i < RATE_COUNT_LEGACY; i++) { |
e2ebc833 | 1634 | rates[i].bitrate = il3945_rates[i].ieee * 5; |
e7392364 | 1635 | rates[i].hw_value = i; /* Rate scaling will work on idxes */ |
4bc85c13 WYG |
1636 | rates[i].hw_value_short = i; |
1637 | rates[i].flags = 0; | |
d3175167 | 1638 | if (i > IL39_LAST_OFDM_RATE || i < IL_FIRST_OFDM_RATE) { |
4bc85c13 WYG |
1639 | /* |
1640 | * If CCK != 1M then set short preamble rate flag. | |
1641 | */ | |
e7392364 SG |
1642 | rates[i].flags |= |
1643 | (il3945_rates[i].plcp == | |
1644 | 10) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE; | |
4bc85c13 WYG |
1645 | } |
1646 | } | |
1647 | } | |
1648 | ||
1649 | /****************************************************************************** | |
1650 | * | |
1651 | * uCode download functions | |
1652 | * | |
1653 | ******************************************************************************/ | |
1654 | ||
e7392364 SG |
1655 | static void |
1656 | il3945_dealloc_ucode_pci(struct il_priv *il) | |
4bc85c13 | 1657 | { |
46bc8d4b SG |
1658 | il_free_fw_desc(il->pci_dev, &il->ucode_code); |
1659 | il_free_fw_desc(il->pci_dev, &il->ucode_data); | |
1660 | il_free_fw_desc(il->pci_dev, &il->ucode_data_backup); | |
1661 | il_free_fw_desc(il->pci_dev, &il->ucode_init); | |
1662 | il_free_fw_desc(il->pci_dev, &il->ucode_init_data); | |
1663 | il_free_fw_desc(il->pci_dev, &il->ucode_boot); | |
4bc85c13 WYG |
1664 | } |
1665 | ||
1666 | /** | |
e2ebc833 | 1667 | * il3945_verify_inst_full - verify runtime uCode image in card vs. host, |
4bc85c13 WYG |
1668 | * looking at all data. |
1669 | */ | |
e7392364 SG |
1670 | static int |
1671 | il3945_verify_inst_full(struct il_priv *il, __le32 * image, u32 len) | |
4bc85c13 WYG |
1672 | { |
1673 | u32 val; | |
1674 | u32 save_len = len; | |
1675 | int rc = 0; | |
1676 | u32 errcnt; | |
1677 | ||
58de00a4 | 1678 | D_INFO("ucode inst image size is %u\n", len); |
4bc85c13 | 1679 | |
e7392364 | 1680 | il_wr(il, HBUS_TARG_MEM_RADDR, IL39_RTC_INST_LOWER_BOUND); |
4bc85c13 WYG |
1681 | |
1682 | errcnt = 0; | |
1683 | for (; len > 0; len -= sizeof(u32), image++) { | |
1684 | /* read data comes through single port, auto-incr addr */ | |
1685 | /* NOTE: Use the debugless read so we don't flood kernel log | |
e2ebc833 | 1686 | * if IL_DL_IO is set */ |
1c8cae57 | 1687 | val = _il_rd(il, HBUS_TARG_MEM_RDAT); |
4bc85c13 | 1688 | if (val != le32_to_cpu(*image)) { |
9406f797 | 1689 | IL_ERR("uCode INST section is invalid at " |
e7392364 SG |
1690 | "offset 0x%x, is 0x%x, s/b 0x%x\n", |
1691 | save_len - len, val, le32_to_cpu(*image)); | |
4bc85c13 WYG |
1692 | rc = -EIO; |
1693 | errcnt++; | |
1694 | if (errcnt >= 20) | |
1695 | break; | |
1696 | } | |
1697 | } | |
1698 | ||
4bc85c13 | 1699 | if (!errcnt) |
e7392364 | 1700 | D_INFO("ucode image in INSTRUCTION memory is good\n"); |
4bc85c13 WYG |
1701 | |
1702 | return rc; | |
1703 | } | |
1704 | ||
4bc85c13 | 1705 | /** |
e2ebc833 | 1706 | * il3945_verify_inst_sparse - verify runtime uCode image in card vs. host, |
4bc85c13 WYG |
1707 | * using sample data 100 bytes apart. If these sample points are good, |
1708 | * it's a pretty good bet that everything between them is good, too. | |
1709 | */ | |
e7392364 SG |
1710 | static int |
1711 | il3945_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len) | |
4bc85c13 WYG |
1712 | { |
1713 | u32 val; | |
1714 | int rc = 0; | |
1715 | u32 errcnt = 0; | |
1716 | u32 i; | |
1717 | ||
58de00a4 | 1718 | D_INFO("ucode inst image size is %u\n", len); |
4bc85c13 | 1719 | |
e7392364 | 1720 | for (i = 0; i < len; i += 100, image += 100 / sizeof(u32)) { |
4bc85c13 WYG |
1721 | /* read data comes through single port, auto-incr addr */ |
1722 | /* NOTE: Use the debugless read so we don't flood kernel log | |
e2ebc833 | 1723 | * if IL_DL_IO is set */ |
e7392364 | 1724 | il_wr(il, HBUS_TARG_MEM_RADDR, i + IL39_RTC_INST_LOWER_BOUND); |
1c8cae57 | 1725 | val = _il_rd(il, HBUS_TARG_MEM_RDAT); |
4bc85c13 | 1726 | if (val != le32_to_cpu(*image)) { |
e7392364 | 1727 | #if 0 /* Enable this if you want to see details */ |
9406f797 | 1728 | IL_ERR("uCode INST section is invalid at " |
e7392364 SG |
1729 | "offset 0x%x, is 0x%x, s/b 0x%x\n", i, val, |
1730 | *image); | |
4bc85c13 WYG |
1731 | #endif |
1732 | rc = -EIO; | |
1733 | errcnt++; | |
1734 | if (errcnt >= 3) | |
1735 | break; | |
1736 | } | |
1737 | } | |
1738 | ||
1739 | return rc; | |
1740 | } | |
1741 | ||
4bc85c13 | 1742 | /** |
e2ebc833 | 1743 | * il3945_verify_ucode - determine which instruction image is in SRAM, |
4bc85c13 WYG |
1744 | * and verify its contents |
1745 | */ | |
e7392364 SG |
1746 | static int |
1747 | il3945_verify_ucode(struct il_priv *il) | |
4bc85c13 WYG |
1748 | { |
1749 | __le32 *image; | |
1750 | u32 len; | |
1751 | int rc = 0; | |
1752 | ||
1753 | /* Try bootstrap */ | |
e7392364 | 1754 | image = (__le32 *) il->ucode_boot.v_addr; |
46bc8d4b SG |
1755 | len = il->ucode_boot.len; |
1756 | rc = il3945_verify_inst_sparse(il, image, len); | |
4bc85c13 | 1757 | if (rc == 0) { |
58de00a4 | 1758 | D_INFO("Bootstrap uCode is good in inst SRAM\n"); |
4bc85c13 WYG |
1759 | return 0; |
1760 | } | |
1761 | ||
1762 | /* Try initialize */ | |
e7392364 | 1763 | image = (__le32 *) il->ucode_init.v_addr; |
46bc8d4b SG |
1764 | len = il->ucode_init.len; |
1765 | rc = il3945_verify_inst_sparse(il, image, len); | |
4bc85c13 | 1766 | if (rc == 0) { |
58de00a4 | 1767 | D_INFO("Initialize uCode is good in inst SRAM\n"); |
4bc85c13 WYG |
1768 | return 0; |
1769 | } | |
1770 | ||
1771 | /* Try runtime/protocol */ | |
e7392364 | 1772 | image = (__le32 *) il->ucode_code.v_addr; |
46bc8d4b SG |
1773 | len = il->ucode_code.len; |
1774 | rc = il3945_verify_inst_sparse(il, image, len); | |
4bc85c13 | 1775 | if (rc == 0) { |
58de00a4 | 1776 | D_INFO("Runtime uCode is good in inst SRAM\n"); |
4bc85c13 WYG |
1777 | return 0; |
1778 | } | |
1779 | ||
9406f797 | 1780 | IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); |
4bc85c13 WYG |
1781 | |
1782 | /* Since nothing seems to match, show first several data entries in | |
1783 | * instruction SRAM, so maybe visual inspection will give a clue. | |
1784 | * Selection of bootstrap image (vs. other images) is arbitrary. */ | |
e7392364 | 1785 | image = (__le32 *) il->ucode_boot.v_addr; |
46bc8d4b SG |
1786 | len = il->ucode_boot.len; |
1787 | rc = il3945_verify_inst_full(il, image, len); | |
4bc85c13 WYG |
1788 | |
1789 | return rc; | |
1790 | } | |
1791 | ||
e7392364 SG |
1792 | static void |
1793 | il3945_nic_start(struct il_priv *il) | |
4bc85c13 WYG |
1794 | { |
1795 | /* Remove all resets to allow NIC to operate */ | |
841b2cca | 1796 | _il_wr(il, CSR_RESET, 0); |
4bc85c13 WYG |
1797 | } |
1798 | ||
d3175167 | 1799 | #define IL3945_UCODE_GET(item) \ |
e2ebc833 | 1800 | static u32 il3945_ucode_get_##item(const struct il_ucode_header *ucode)\ |
4bc85c13 | 1801 | { \ |
be663ab6 | 1802 | return le32_to_cpu(ucode->v1.item); \ |
4bc85c13 WYG |
1803 | } |
1804 | ||
e7392364 SG |
1805 | static u32 |
1806 | il3945_ucode_get_header_size(u32 api_ver) | |
4bc85c13 WYG |
1807 | { |
1808 | return 24; | |
1809 | } | |
1810 | ||
e7392364 SG |
1811 | static u8 * |
1812 | il3945_ucode_get_data(const struct il_ucode_header *ucode) | |
4bc85c13 | 1813 | { |
be663ab6 | 1814 | return (u8 *) ucode->v1.data; |
4bc85c13 WYG |
1815 | } |
1816 | ||
d3175167 SG |
1817 | IL3945_UCODE_GET(inst_size); |
1818 | IL3945_UCODE_GET(data_size); | |
1819 | IL3945_UCODE_GET(init_size); | |
1820 | IL3945_UCODE_GET(init_data_size); | |
1821 | IL3945_UCODE_GET(boot_size); | |
4bc85c13 WYG |
1822 | |
1823 | /** | |
e2ebc833 | 1824 | * il3945_read_ucode - Read uCode images from disk file. |
4bc85c13 WYG |
1825 | * |
1826 | * Copy into buffers for card to fetch via bus-mastering | |
1827 | */ | |
e7392364 SG |
1828 | static int |
1829 | il3945_read_ucode(struct il_priv *il) | |
4bc85c13 | 1830 | { |
e2ebc833 | 1831 | const struct il_ucode_header *ucode; |
0c2c8852 | 1832 | int ret = -EINVAL, idx; |
4bc85c13 WYG |
1833 | const struct firmware *ucode_raw; |
1834 | /* firmware file name contains uCode/driver compatibility version */ | |
46bc8d4b SG |
1835 | const char *name_pre = il->cfg->fw_name_pre; |
1836 | const unsigned int api_max = il->cfg->ucode_api_max; | |
1837 | const unsigned int api_min = il->cfg->ucode_api_min; | |
4bc85c13 WYG |
1838 | char buf[25]; |
1839 | u8 *src; | |
1840 | size_t len; | |
1841 | u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size; | |
1842 | ||
1843 | /* Ask kernel firmware_class module to get the boot firmware off disk. | |
1844 | * request_firmware() is synchronous, file is in memory on return. */ | |
0c2c8852 SG |
1845 | for (idx = api_max; idx >= api_min; idx--) { |
1846 | sprintf(buf, "%s%u%s", name_pre, idx, ".ucode"); | |
46bc8d4b | 1847 | ret = request_firmware(&ucode_raw, buf, &il->pci_dev->dev); |
4bc85c13 | 1848 | if (ret < 0) { |
e7392364 | 1849 | IL_ERR("%s firmware file req failed: %d\n", buf, ret); |
4bc85c13 WYG |
1850 | if (ret == -ENOENT) |
1851 | continue; | |
1852 | else | |
1853 | goto error; | |
1854 | } else { | |
0c2c8852 | 1855 | if (idx < api_max) |
9406f797 | 1856 | IL_ERR("Loaded firmware %s, " |
e7392364 SG |
1857 | "which is deprecated. " |
1858 | " Please use API v%u instead.\n", buf, | |
1859 | api_max); | |
58de00a4 | 1860 | D_INFO("Got firmware '%s' file " |
e7392364 | 1861 | "(%zd bytes) from disk\n", buf, ucode_raw->size); |
4bc85c13 WYG |
1862 | break; |
1863 | } | |
1864 | } | |
1865 | ||
1866 | if (ret < 0) | |
1867 | goto error; | |
1868 | ||
1869 | /* Make sure that we got at least our header! */ | |
e7392364 | 1870 | if (ucode_raw->size < il3945_ucode_get_header_size(1)) { |
9406f797 | 1871 | IL_ERR("File size way too small!\n"); |
4bc85c13 WYG |
1872 | ret = -EINVAL; |
1873 | goto err_release; | |
1874 | } | |
1875 | ||
1876 | /* Data from ucode file: header followed by uCode images */ | |
e2ebc833 | 1877 | ucode = (struct il_ucode_header *)ucode_raw->data; |
4bc85c13 | 1878 | |
46bc8d4b SG |
1879 | il->ucode_ver = le32_to_cpu(ucode->ver); |
1880 | api_ver = IL_UCODE_API(il->ucode_ver); | |
e2ebc833 SG |
1881 | inst_size = il3945_ucode_get_inst_size(ucode); |
1882 | data_size = il3945_ucode_get_data_size(ucode); | |
1883 | init_size = il3945_ucode_get_init_size(ucode); | |
1884 | init_data_size = il3945_ucode_get_init_data_size(ucode); | |
1885 | boot_size = il3945_ucode_get_boot_size(ucode); | |
1886 | src = il3945_ucode_get_data(ucode); | |
4bc85c13 WYG |
1887 | |
1888 | /* api_ver should match the api version forming part of the | |
1889 | * firmware filename ... but we don't check for that and only rely | |
1890 | * on the API version read from firmware header from here on forward */ | |
1891 | ||
1892 | if (api_ver < api_min || api_ver > api_max) { | |
9406f797 | 1893 | IL_ERR("Driver unable to support your firmware API. " |
e7392364 SG |
1894 | "Driver supports v%u, firmware is v%u.\n", api_max, |
1895 | api_ver); | |
46bc8d4b | 1896 | il->ucode_ver = 0; |
4bc85c13 WYG |
1897 | ret = -EINVAL; |
1898 | goto err_release; | |
1899 | } | |
1900 | if (api_ver != api_max) | |
9406f797 | 1901 | IL_ERR("Firmware has old API version. Expected %u, " |
e7392364 SG |
1902 | "got %u. New firmware can be obtained " |
1903 | "from http://www.intellinuxwireless.org.\n", api_max, | |
1904 | api_ver); | |
4bc85c13 | 1905 | |
9406f797 | 1906 | IL_INFO("loaded firmware version %u.%u.%u.%u\n", |
e7392364 SG |
1907 | IL_UCODE_MAJOR(il->ucode_ver), IL_UCODE_MINOR(il->ucode_ver), |
1908 | IL_UCODE_API(il->ucode_ver), IL_UCODE_SERIAL(il->ucode_ver)); | |
46bc8d4b | 1909 | |
e7392364 SG |
1910 | snprintf(il->hw->wiphy->fw_version, sizeof(il->hw->wiphy->fw_version), |
1911 | "%u.%u.%u.%u", IL_UCODE_MAJOR(il->ucode_ver), | |
1912 | IL_UCODE_MINOR(il->ucode_ver), IL_UCODE_API(il->ucode_ver), | |
1913 | IL_UCODE_SERIAL(il->ucode_ver)); | |
4bc85c13 | 1914 | |
e7392364 SG |
1915 | D_INFO("f/w package hdr ucode version raw = 0x%x\n", il->ucode_ver); |
1916 | D_INFO("f/w package hdr runtime inst size = %u\n", inst_size); | |
1917 | D_INFO("f/w package hdr runtime data size = %u\n", data_size); | |
1918 | D_INFO("f/w package hdr init inst size = %u\n", init_size); | |
1919 | D_INFO("f/w package hdr init data size = %u\n", init_data_size); | |
1920 | D_INFO("f/w package hdr boot inst size = %u\n", boot_size); | |
4bc85c13 WYG |
1921 | |
1922 | /* Verify size of file vs. image size info in file's header */ | |
e7392364 SG |
1923 | if (ucode_raw->size != |
1924 | il3945_ucode_get_header_size(api_ver) + inst_size + data_size + | |
1925 | init_size + init_data_size + boot_size) { | |
4bc85c13 | 1926 | |
e7392364 SG |
1927 | D_INFO("uCode file size %zd does not match expected size\n", |
1928 | ucode_raw->size); | |
4bc85c13 WYG |
1929 | ret = -EINVAL; |
1930 | goto err_release; | |
1931 | } | |
1932 | ||
1933 | /* Verify that uCode images will fit in card's SRAM */ | |
d3175167 | 1934 | if (inst_size > IL39_MAX_INST_SIZE) { |
e7392364 | 1935 | D_INFO("uCode instr len %d too large to fit in\n", inst_size); |
4bc85c13 WYG |
1936 | ret = -EINVAL; |
1937 | goto err_release; | |
1938 | } | |
1939 | ||
d3175167 | 1940 | if (data_size > IL39_MAX_DATA_SIZE) { |
e7392364 | 1941 | D_INFO("uCode data len %d too large to fit in\n", data_size); |
4bc85c13 WYG |
1942 | ret = -EINVAL; |
1943 | goto err_release; | |
1944 | } | |
d3175167 | 1945 | if (init_size > IL39_MAX_INST_SIZE) { |
e7392364 SG |
1946 | D_INFO("uCode init instr len %d too large to fit in\n", |
1947 | init_size); | |
4bc85c13 WYG |
1948 | ret = -EINVAL; |
1949 | goto err_release; | |
1950 | } | |
d3175167 | 1951 | if (init_data_size > IL39_MAX_DATA_SIZE) { |
e7392364 SG |
1952 | D_INFO("uCode init data len %d too large to fit in\n", |
1953 | init_data_size); | |
4bc85c13 WYG |
1954 | ret = -EINVAL; |
1955 | goto err_release; | |
1956 | } | |
d3175167 | 1957 | if (boot_size > IL39_MAX_BSM_SIZE) { |
e7392364 SG |
1958 | D_INFO("uCode boot instr len %d too large to fit in\n", |
1959 | boot_size); | |
4bc85c13 WYG |
1960 | ret = -EINVAL; |
1961 | goto err_release; | |
1962 | } | |
1963 | ||
1964 | /* Allocate ucode buffers for card's bus-master loading ... */ | |
1965 | ||
1966 | /* Runtime instructions and 2 copies of data: | |
1967 | * 1) unmodified from disk | |
1968 | * 2) backup cache for save/restore during power-downs */ | |
46bc8d4b SG |
1969 | il->ucode_code.len = inst_size; |
1970 | il_alloc_fw_desc(il->pci_dev, &il->ucode_code); | |
4bc85c13 | 1971 | |
46bc8d4b SG |
1972 | il->ucode_data.len = data_size; |
1973 | il_alloc_fw_desc(il->pci_dev, &il->ucode_data); | |
4bc85c13 | 1974 | |
46bc8d4b SG |
1975 | il->ucode_data_backup.len = data_size; |
1976 | il_alloc_fw_desc(il->pci_dev, &il->ucode_data_backup); | |
4bc85c13 | 1977 | |
46bc8d4b SG |
1978 | if (!il->ucode_code.v_addr || !il->ucode_data.v_addr || |
1979 | !il->ucode_data_backup.v_addr) | |
4bc85c13 WYG |
1980 | goto err_pci_alloc; |
1981 | ||
1982 | /* Initialization instructions and data */ | |
1983 | if (init_size && init_data_size) { | |
46bc8d4b SG |
1984 | il->ucode_init.len = init_size; |
1985 | il_alloc_fw_desc(il->pci_dev, &il->ucode_init); | |
4bc85c13 | 1986 | |
46bc8d4b SG |
1987 | il->ucode_init_data.len = init_data_size; |
1988 | il_alloc_fw_desc(il->pci_dev, &il->ucode_init_data); | |
4bc85c13 | 1989 | |
46bc8d4b | 1990 | if (!il->ucode_init.v_addr || !il->ucode_init_data.v_addr) |
4bc85c13 WYG |
1991 | goto err_pci_alloc; |
1992 | } | |
1993 | ||
1994 | /* Bootstrap (instructions only, no data) */ | |
1995 | if (boot_size) { | |
46bc8d4b SG |
1996 | il->ucode_boot.len = boot_size; |
1997 | il_alloc_fw_desc(il->pci_dev, &il->ucode_boot); | |
4bc85c13 | 1998 | |
46bc8d4b | 1999 | if (!il->ucode_boot.v_addr) |
4bc85c13 WYG |
2000 | goto err_pci_alloc; |
2001 | } | |
2002 | ||
2003 | /* Copy images into buffers for card's bus-master reads ... */ | |
2004 | ||
2005 | /* Runtime instructions (first block of data in file) */ | |
2006 | len = inst_size; | |
e7392364 | 2007 | D_INFO("Copying (but not loading) uCode instr len %zd\n", len); |
46bc8d4b | 2008 | memcpy(il->ucode_code.v_addr, src, len); |
4bc85c13 WYG |
2009 | src += len; |
2010 | ||
58de00a4 | 2011 | D_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", |
e7392364 | 2012 | il->ucode_code.v_addr, (u32) il->ucode_code.p_addr); |
4bc85c13 WYG |
2013 | |
2014 | /* Runtime data (2nd block) | |
e2ebc833 | 2015 | * NOTE: Copy into backup buffer will be done in il3945_up() */ |
4bc85c13 | 2016 | len = data_size; |
e7392364 | 2017 | D_INFO("Copying (but not loading) uCode data len %zd\n", len); |
46bc8d4b SG |
2018 | memcpy(il->ucode_data.v_addr, src, len); |
2019 | memcpy(il->ucode_data_backup.v_addr, src, len); | |
4bc85c13 WYG |
2020 | src += len; |
2021 | ||
2022 | /* Initialization instructions (3rd block) */ | |
2023 | if (init_size) { | |
2024 | len = init_size; | |
e7392364 | 2025 | D_INFO("Copying (but not loading) init instr len %zd\n", len); |
46bc8d4b | 2026 | memcpy(il->ucode_init.v_addr, src, len); |
4bc85c13 WYG |
2027 | src += len; |
2028 | } | |
2029 | ||
2030 | /* Initialization data (4th block) */ | |
2031 | if (init_data_size) { | |
2032 | len = init_data_size; | |
e7392364 | 2033 | D_INFO("Copying (but not loading) init data len %zd\n", len); |
46bc8d4b | 2034 | memcpy(il->ucode_init_data.v_addr, src, len); |
4bc85c13 WYG |
2035 | src += len; |
2036 | } | |
2037 | ||
2038 | /* Bootstrap instructions (5th block) */ | |
2039 | len = boot_size; | |
e7392364 | 2040 | D_INFO("Copying (but not loading) boot instr len %zd\n", len); |
46bc8d4b | 2041 | memcpy(il->ucode_boot.v_addr, src, len); |
4bc85c13 WYG |
2042 | |
2043 | /* We have our copies now, allow OS release its copies */ | |
2044 | release_firmware(ucode_raw); | |
2045 | return 0; | |
2046 | ||
e7392364 | 2047 | err_pci_alloc: |
9406f797 | 2048 | IL_ERR("failed to allocate pci memory\n"); |
4bc85c13 | 2049 | ret = -ENOMEM; |
46bc8d4b | 2050 | il3945_dealloc_ucode_pci(il); |
4bc85c13 | 2051 | |
e7392364 | 2052 | err_release: |
4bc85c13 WYG |
2053 | release_firmware(ucode_raw); |
2054 | ||
e7392364 | 2055 | error: |
4bc85c13 WYG |
2056 | return ret; |
2057 | } | |
2058 | ||
4bc85c13 | 2059 | /** |
e2ebc833 | 2060 | * il3945_set_ucode_ptrs - Set uCode address location |
4bc85c13 WYG |
2061 | * |
2062 | * Tell initialization uCode where to find runtime uCode. | |
2063 | * | |
2064 | * BSM registers initially contain pointers to initialization uCode. | |
2065 | * We need to replace them to load runtime uCode inst and data, | |
2066 | * and to save runtime data when powering down. | |
2067 | */ | |
e7392364 SG |
2068 | static int |
2069 | il3945_set_ucode_ptrs(struct il_priv *il) | |
4bc85c13 WYG |
2070 | { |
2071 | dma_addr_t pinst; | |
2072 | dma_addr_t pdata; | |
2073 | ||
2074 | /* bits 31:0 for 3945 */ | |
46bc8d4b SG |
2075 | pinst = il->ucode_code.p_addr; |
2076 | pdata = il->ucode_data_backup.p_addr; | |
4bc85c13 WYG |
2077 | |
2078 | /* Tell bootstrap uCode where to find image to load */ | |
db54eb57 SG |
2079 | il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst); |
2080 | il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata); | |
e7392364 | 2081 | il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->ucode_data.len); |
4bc85c13 WYG |
2082 | |
2083 | /* Inst byte count must be last to set up, bit 31 signals uCode | |
2084 | * that all new ptr/size info is in place */ | |
db54eb57 | 2085 | il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, |
e7392364 | 2086 | il->ucode_code.len | BSM_DRAM_INST_LOAD); |
4bc85c13 | 2087 | |
58de00a4 | 2088 | D_INFO("Runtime uCode pointers are set.\n"); |
4bc85c13 WYG |
2089 | |
2090 | return 0; | |
2091 | } | |
2092 | ||
2093 | /** | |
4d69c752 | 2094 | * il3945_init_alive_start - Called after N_ALIVE notification received |
4bc85c13 | 2095 | * |
4d69c752 | 2096 | * Called after N_ALIVE notification received from "initialize" uCode. |
4bc85c13 WYG |
2097 | * |
2098 | * Tell "initialize" uCode to go ahead and load the runtime uCode. | |
2099 | */ | |
e7392364 SG |
2100 | static void |
2101 | il3945_init_alive_start(struct il_priv *il) | |
4bc85c13 WYG |
2102 | { |
2103 | /* Check alive response for "valid" sign from uCode */ | |
46bc8d4b | 2104 | if (il->card_alive_init.is_valid != UCODE_VALID_OK) { |
4bc85c13 WYG |
2105 | /* We had an error bringing up the hardware, so take it |
2106 | * all the way back down so we can try again */ | |
58de00a4 | 2107 | D_INFO("Initialize Alive failed.\n"); |
4bc85c13 WYG |
2108 | goto restart; |
2109 | } | |
2110 | ||
2111 | /* Bootstrap uCode has loaded initialize uCode ... verify inst image. | |
2112 | * This is a paranoid check, because we would not have gotten the | |
2113 | * "initialize" alive if code weren't properly loaded. */ | |
46bc8d4b | 2114 | if (il3945_verify_ucode(il)) { |
4bc85c13 WYG |
2115 | /* Runtime instruction load was bad; |
2116 | * take it all the way back down so we can try again */ | |
58de00a4 | 2117 | D_INFO("Bad \"initialize\" uCode load.\n"); |
4bc85c13 WYG |
2118 | goto restart; |
2119 | } | |
2120 | ||
2121 | /* Send pointers to protocol/runtime uCode image ... init code will | |
2122 | * load and launch runtime uCode, which will send us another "Alive" | |
2123 | * notification. */ | |
58de00a4 | 2124 | D_INFO("Initialization Alive received.\n"); |
46bc8d4b | 2125 | if (il3945_set_ucode_ptrs(il)) { |
4bc85c13 WYG |
2126 | /* Runtime instruction load won't happen; |
2127 | * take it all the way back down so we can try again */ | |
58de00a4 | 2128 | D_INFO("Couldn't set up uCode pointers.\n"); |
4bc85c13 WYG |
2129 | goto restart; |
2130 | } | |
2131 | return; | |
2132 | ||
e7392364 | 2133 | restart: |
46bc8d4b | 2134 | queue_work(il->workqueue, &il->restart); |
4bc85c13 WYG |
2135 | } |
2136 | ||
2137 | /** | |
4d69c752 | 2138 | * il3945_alive_start - called after N_ALIVE notification received |
4bc85c13 | 2139 | * from protocol/runtime uCode (initialization uCode's |
e2ebc833 | 2140 | * Alive gets handled by il3945_init_alive_start()). |
4bc85c13 | 2141 | */ |
e7392364 SG |
2142 | static void |
2143 | il3945_alive_start(struct il_priv *il) | |
4bc85c13 WYG |
2144 | { |
2145 | int thermal_spin = 0; | |
2146 | u32 rfkill; | |
4bc85c13 | 2147 | |
58de00a4 | 2148 | D_INFO("Runtime Alive received.\n"); |
4bc85c13 | 2149 | |
46bc8d4b | 2150 | if (il->card_alive.is_valid != UCODE_VALID_OK) { |
4bc85c13 WYG |
2151 | /* We had an error bringing up the hardware, so take it |
2152 | * all the way back down so we can try again */ | |
58de00a4 | 2153 | D_INFO("Alive failed.\n"); |
4bc85c13 WYG |
2154 | goto restart; |
2155 | } | |
2156 | ||
2157 | /* Initialize uCode has loaded Runtime uCode ... verify inst image. | |
2158 | * This is a paranoid check, because we would not have gotten the | |
2159 | * "runtime" alive if code weren't properly loaded. */ | |
46bc8d4b | 2160 | if (il3945_verify_ucode(il)) { |
4bc85c13 WYG |
2161 | /* Runtime instruction load was bad; |
2162 | * take it all the way back down so we can try again */ | |
58de00a4 | 2163 | D_INFO("Bad runtime uCode load.\n"); |
4bc85c13 WYG |
2164 | goto restart; |
2165 | } | |
2166 | ||
db54eb57 | 2167 | rfkill = il_rd_prph(il, APMG_RFKILL_REG); |
58de00a4 | 2168 | D_INFO("RFKILL status: 0x%x\n", rfkill); |
4bc85c13 WYG |
2169 | |
2170 | if (rfkill & 0x1) { | |
bc269a8e | 2171 | clear_bit(S_RFKILL, &il->status); |
4bc85c13 WYG |
2172 | /* if RFKILL is not on, then wait for thermal |
2173 | * sensor in adapter to kick in */ | |
46bc8d4b | 2174 | while (il3945_hw_get_temperature(il) == 0) { |
4bc85c13 WYG |
2175 | thermal_spin++; |
2176 | udelay(10); | |
2177 | } | |
2178 | ||
2179 | if (thermal_spin) | |
58de00a4 | 2180 | D_INFO("Thermal calibration took %dus\n", |
e7392364 | 2181 | thermal_spin * 10); |
4bc85c13 | 2182 | } else |
bc269a8e | 2183 | set_bit(S_RFKILL, &il->status); |
4bc85c13 WYG |
2184 | |
2185 | /* After the ALIVE response, we can send commands to 3945 uCode */ | |
a6766ccd | 2186 | set_bit(S_ALIVE, &il->status); |
4bc85c13 WYG |
2187 | |
2188 | /* Enable watchdog to monitor the driver tx queues */ | |
46bc8d4b | 2189 | il_setup_watchdog(il); |
4bc85c13 | 2190 | |
46bc8d4b | 2191 | if (il_is_rfkill(il)) |
4bc85c13 WYG |
2192 | return; |
2193 | ||
46bc8d4b | 2194 | ieee80211_wake_queues(il->hw); |
4bc85c13 | 2195 | |
2eb05816 | 2196 | il->active_rate = RATES_MASK_3945; |
4bc85c13 | 2197 | |
46bc8d4b | 2198 | il_power_update_mode(il, true); |
4bc85c13 | 2199 | |
7c2cde2e | 2200 | if (il_is_associated(il)) { |
e2ebc833 | 2201 | struct il3945_rxon_cmd *active_rxon = |
c8b03958 | 2202 | (struct il3945_rxon_cmd *)(&il->active); |
4bc85c13 | 2203 | |
c8b03958 | 2204 | il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
4bc85c13 WYG |
2205 | active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
2206 | } else { | |
2207 | /* Initialize our rx_config data */ | |
83007196 | 2208 | il_connection_init_rx_config(il); |
4bc85c13 WYG |
2209 | } |
2210 | ||
2211 | /* Configure Bluetooth device coexistence support */ | |
46bc8d4b | 2212 | il_send_bt_config(il); |
4bc85c13 | 2213 | |
a6766ccd | 2214 | set_bit(S_READY, &il->status); |
4bc85c13 WYG |
2215 | |
2216 | /* Configure the adapter for unassociated operation */ | |
83007196 | 2217 | il3945_commit_rxon(il); |
4bc85c13 | 2218 | |
46bc8d4b | 2219 | il3945_reg_txpower_periodic(il); |
4bc85c13 | 2220 | |
58de00a4 | 2221 | D_INFO("ALIVE processing complete.\n"); |
46bc8d4b | 2222 | wake_up(&il->wait_command_queue); |
4bc85c13 WYG |
2223 | |
2224 | return; | |
2225 | ||
e7392364 | 2226 | restart: |
46bc8d4b | 2227 | queue_work(il->workqueue, &il->restart); |
4bc85c13 WYG |
2228 | } |
2229 | ||
46bc8d4b | 2230 | static void il3945_cancel_deferred_work(struct il_priv *il); |
4bc85c13 | 2231 | |
e7392364 SG |
2232 | static void |
2233 | __il3945_down(struct il_priv *il) | |
4bc85c13 WYG |
2234 | { |
2235 | unsigned long flags; | |
2236 | int exit_pending; | |
2237 | ||
58de00a4 | 2238 | D_INFO(DRV_NAME " is going down\n"); |
4bc85c13 | 2239 | |
46bc8d4b | 2240 | il_scan_cancel_timeout(il, 200); |
4bc85c13 | 2241 | |
a6766ccd | 2242 | exit_pending = test_and_set_bit(S_EXIT_PENDING, &il->status); |
4bc85c13 | 2243 | |
a6766ccd | 2244 | /* Stop TX queues watchdog. We need to have S_EXIT_PENDING bit set |
4bc85c13 | 2245 | * to prevent rearm timer */ |
46bc8d4b | 2246 | del_timer_sync(&il->watchdog); |
4bc85c13 WYG |
2247 | |
2248 | /* Station information will now be cleared in device */ | |
83007196 | 2249 | il_clear_ucode_stations(il); |
46bc8d4b SG |
2250 | il_dealloc_bcast_stations(il); |
2251 | il_clear_driver_stations(il); | |
4bc85c13 WYG |
2252 | |
2253 | /* Unblock any waiting calls */ | |
46bc8d4b | 2254 | wake_up_all(&il->wait_command_queue); |
4bc85c13 WYG |
2255 | |
2256 | /* Wipe out the EXIT_PENDING status bit if we are not actually | |
2257 | * exiting the module */ | |
2258 | if (!exit_pending) | |
a6766ccd | 2259 | clear_bit(S_EXIT_PENDING, &il->status); |
4bc85c13 WYG |
2260 | |
2261 | /* stop and reset the on-board processor */ | |
841b2cca | 2262 | _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
4bc85c13 WYG |
2263 | |
2264 | /* tell the device to stop sending interrupts */ | |
46bc8d4b SG |
2265 | spin_lock_irqsave(&il->lock, flags); |
2266 | il_disable_interrupts(il); | |
2267 | spin_unlock_irqrestore(&il->lock, flags); | |
2268 | il3945_synchronize_irq(il); | |
4bc85c13 | 2269 | |
46bc8d4b SG |
2270 | if (il->mac80211_registered) |
2271 | ieee80211_stop_queues(il->hw); | |
4bc85c13 | 2272 | |
e2ebc833 | 2273 | /* If we have not previously called il3945_init() then |
4bc85c13 | 2274 | * clear all bits but the RF Kill bits and return */ |
46bc8d4b | 2275 | if (!il_is_init(il)) { |
e7392364 | 2276 | il->status = |
bc269a8e | 2277 | test_bit(S_RFKILL, &il->status) << S_RFKILL | |
c37281a0 | 2278 | test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | |
e7392364 | 2279 | test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; |
4bc85c13 WYG |
2280 | goto exit; |
2281 | } | |
2282 | ||
2283 | /* ...otherwise clear out all the status bits but the RF Kill | |
2284 | * bit and continue taking the NIC down. */ | |
e7392364 | 2285 | il->status &= |
bc269a8e | 2286 | test_bit(S_RFKILL, &il->status) << S_RFKILL | |
c37281a0 SG |
2287 | test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | |
2288 | test_bit(S_FW_ERROR, &il->status) << S_FW_ERROR | | |
e7392364 | 2289 | test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; |
4bc85c13 | 2290 | |
775ed8ab SG |
2291 | /* |
2292 | * We disabled and synchronized interrupt, and priv->mutex is taken, so | |
2293 | * here is the only thread which will program device registers, but | |
2294 | * still have lockdep assertions, so we are taking reg_lock. | |
2295 | */ | |
2296 | spin_lock_irq(&il->reg_lock); | |
2297 | /* FIXME: il_grab_nic_access if rfkill is off ? */ | |
2298 | ||
46bc8d4b SG |
2299 | il3945_hw_txq_ctx_stop(il); |
2300 | il3945_hw_rxq_stop(il); | |
4bc85c13 | 2301 | /* Power-down device's busmaster DMA clocks */ |
775ed8ab | 2302 | _il_wr_prph(il, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); |
4bc85c13 | 2303 | udelay(5); |
4bc85c13 | 2304 | /* Stop the device, and put it in low power state */ |
775ed8ab SG |
2305 | _il_apm_stop(il); |
2306 | ||
2307 | spin_unlock_irq(&il->reg_lock); | |
4bc85c13 | 2308 | |
775ed8ab | 2309 | il3945_hw_txq_ctx_free(il); |
e7392364 | 2310 | exit: |
46bc8d4b | 2311 | memset(&il->card_alive, 0, sizeof(struct il_alive_resp)); |
4bc85c13 | 2312 | |
46bc8d4b SG |
2313 | if (il->beacon_skb) |
2314 | dev_kfree_skb(il->beacon_skb); | |
2315 | il->beacon_skb = NULL; | |
4bc85c13 WYG |
2316 | |
2317 | /* clear out any free frames */ | |
46bc8d4b | 2318 | il3945_clear_free_frames(il); |
4bc85c13 WYG |
2319 | } |
2320 | ||
e7392364 SG |
2321 | static void |
2322 | il3945_down(struct il_priv *il) | |
4bc85c13 | 2323 | { |
46bc8d4b SG |
2324 | mutex_lock(&il->mutex); |
2325 | __il3945_down(il); | |
2326 | mutex_unlock(&il->mutex); | |
4bc85c13 | 2327 | |
46bc8d4b | 2328 | il3945_cancel_deferred_work(il); |
4bc85c13 WYG |
2329 | } |
2330 | ||
2331 | #define MAX_HW_RESTARTS 5 | |
2332 | ||
e7392364 SG |
2333 | static int |
2334 | il3945_alloc_bcast_station(struct il_priv *il) | |
4bc85c13 | 2335 | { |
4bc85c13 WYG |
2336 | unsigned long flags; |
2337 | u8 sta_id; | |
2338 | ||
46bc8d4b | 2339 | spin_lock_irqsave(&il->sta_lock, flags); |
83007196 | 2340 | sta_id = il_prep_station(il, il_bcast_addr, false, NULL); |
e2ebc833 | 2341 | if (sta_id == IL_INVALID_STATION) { |
9406f797 | 2342 | IL_ERR("Unable to prepare broadcast station\n"); |
46bc8d4b | 2343 | spin_unlock_irqrestore(&il->sta_lock, flags); |
4bc85c13 WYG |
2344 | |
2345 | return -EINVAL; | |
2346 | } | |
2347 | ||
46bc8d4b SG |
2348 | il->stations[sta_id].used |= IL_STA_DRIVER_ACTIVE; |
2349 | il->stations[sta_id].used |= IL_STA_BCAST; | |
2350 | spin_unlock_irqrestore(&il->sta_lock, flags); | |
4bc85c13 WYG |
2351 | |
2352 | return 0; | |
2353 | } | |
2354 | ||
e7392364 SG |
2355 | static int |
2356 | __il3945_up(struct il_priv *il) | |
4bc85c13 WYG |
2357 | { |
2358 | int rc, i; | |
2359 | ||
46bc8d4b | 2360 | rc = il3945_alloc_bcast_station(il); |
4bc85c13 WYG |
2361 | if (rc) |
2362 | return rc; | |
2363 | ||
a6766ccd | 2364 | if (test_bit(S_EXIT_PENDING, &il->status)) { |
9406f797 | 2365 | IL_WARN("Exit pending; will not bring the NIC up\n"); |
4bc85c13 WYG |
2366 | return -EIO; |
2367 | } | |
2368 | ||
46bc8d4b | 2369 | if (!il->ucode_data_backup.v_addr || !il->ucode_data.v_addr) { |
9406f797 | 2370 | IL_ERR("ucode not available for device bring up\n"); |
4bc85c13 WYG |
2371 | return -EIO; |
2372 | } | |
2373 | ||
2374 | /* If platform's RF_KILL switch is NOT set to KILL */ | |
e7392364 | 2375 | if (_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
bc269a8e | 2376 | clear_bit(S_RFKILL, &il->status); |
4bc85c13 | 2377 | else { |
bc269a8e | 2378 | set_bit(S_RFKILL, &il->status); |
9406f797 | 2379 | IL_WARN("Radio disabled by HW RF Kill switch\n"); |
4bc85c13 WYG |
2380 | return -ENODEV; |
2381 | } | |
2382 | ||
841b2cca | 2383 | _il_wr(il, CSR_INT, 0xFFFFFFFF); |
4bc85c13 | 2384 | |
46bc8d4b | 2385 | rc = il3945_hw_nic_init(il); |
4bc85c13 | 2386 | if (rc) { |
9406f797 | 2387 | IL_ERR("Unable to int nic\n"); |
4bc85c13 WYG |
2388 | return rc; |
2389 | } | |
2390 | ||
2391 | /* make sure rfkill handshake bits are cleared */ | |
841b2cca | 2392 | _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
e7392364 | 2393 | _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
4bc85c13 WYG |
2394 | |
2395 | /* clear (again), then enable host interrupts */ | |
841b2cca | 2396 | _il_wr(il, CSR_INT, 0xFFFFFFFF); |
46bc8d4b | 2397 | il_enable_interrupts(il); |
4bc85c13 WYG |
2398 | |
2399 | /* really make sure rfkill handshake bits are cleared */ | |
841b2cca SG |
2400 | _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
2401 | _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
4bc85c13 WYG |
2402 | |
2403 | /* Copy original ucode data image from disk into backup cache. | |
2404 | * This will be used to initialize the on-board processor's | |
2405 | * data SRAM for a clean start when the runtime program first loads. */ | |
46bc8d4b SG |
2406 | memcpy(il->ucode_data_backup.v_addr, il->ucode_data.v_addr, |
2407 | il->ucode_data.len); | |
4bc85c13 WYG |
2408 | |
2409 | /* We return success when we resume from suspend and rf_kill is on. */ | |
bc269a8e | 2410 | if (test_bit(S_RFKILL, &il->status)) |
4bc85c13 WYG |
2411 | return 0; |
2412 | ||
2413 | for (i = 0; i < MAX_HW_RESTARTS; i++) { | |
2414 | ||
2415 | /* load bootstrap state machine, | |
2416 | * load bootstrap program into processor's memory, | |
2417 | * prepare to load the "initialize" uCode */ | |
1600b875 | 2418 | rc = il->ops->load_ucode(il); |
4bc85c13 WYG |
2419 | |
2420 | if (rc) { | |
e7392364 | 2421 | IL_ERR("Unable to set up bootstrap uCode: %d\n", rc); |
4bc85c13 WYG |
2422 | continue; |
2423 | } | |
2424 | ||
2425 | /* start card; "initialize" will load runtime ucode */ | |
46bc8d4b | 2426 | il3945_nic_start(il); |
4bc85c13 | 2427 | |
58de00a4 | 2428 | D_INFO(DRV_NAME " is coming up\n"); |
4bc85c13 WYG |
2429 | |
2430 | return 0; | |
2431 | } | |
2432 | ||
a6766ccd | 2433 | set_bit(S_EXIT_PENDING, &il->status); |
46bc8d4b | 2434 | __il3945_down(il); |
a6766ccd | 2435 | clear_bit(S_EXIT_PENDING, &il->status); |
4bc85c13 WYG |
2436 | |
2437 | /* tried to restart and config the device for as long as our | |
2438 | * patience could withstand */ | |
9406f797 | 2439 | IL_ERR("Unable to initialize device after %d attempts.\n", i); |
4bc85c13 WYG |
2440 | return -EIO; |
2441 | } | |
2442 | ||
4bc85c13 WYG |
2443 | /***************************************************************************** |
2444 | * | |
2445 | * Workqueue callbacks | |
2446 | * | |
2447 | *****************************************************************************/ | |
2448 | ||
e7392364 SG |
2449 | static void |
2450 | il3945_bg_init_alive_start(struct work_struct *data) | |
4bc85c13 | 2451 | { |
46bc8d4b | 2452 | struct il_priv *il = |
e2ebc833 | 2453 | container_of(data, struct il_priv, init_alive_start.work); |
4bc85c13 | 2454 | |
46bc8d4b | 2455 | mutex_lock(&il->mutex); |
a6766ccd | 2456 | if (test_bit(S_EXIT_PENDING, &il->status)) |
28a6e577 | 2457 | goto out; |
4bc85c13 | 2458 | |
46bc8d4b | 2459 | il3945_init_alive_start(il); |
28a6e577 | 2460 | out: |
46bc8d4b | 2461 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2462 | } |
2463 | ||
e7392364 SG |
2464 | static void |
2465 | il3945_bg_alive_start(struct work_struct *data) | |
4bc85c13 | 2466 | { |
46bc8d4b | 2467 | struct il_priv *il = |
e2ebc833 | 2468 | container_of(data, struct il_priv, alive_start.work); |
4bc85c13 | 2469 | |
46bc8d4b | 2470 | mutex_lock(&il->mutex); |
210787e8 | 2471 | if (test_bit(S_EXIT_PENDING, &il->status) || il->txq == NULL) |
28a6e577 | 2472 | goto out; |
4bc85c13 | 2473 | |
46bc8d4b | 2474 | il3945_alive_start(il); |
28a6e577 | 2475 | out: |
46bc8d4b | 2476 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2477 | } |
2478 | ||
2479 | /* | |
2480 | * 3945 cannot interrupt driver when hardware rf kill switch toggles; | |
2481 | * driver must poll CSR_GP_CNTRL_REG register for change. This register | |
2482 | * *is* readable even when device has been SW_RESET into low power mode | |
2483 | * (e.g. during RF KILL). | |
2484 | */ | |
e7392364 SG |
2485 | static void |
2486 | il3945_rfkill_poll(struct work_struct *data) | |
4bc85c13 | 2487 | { |
46bc8d4b | 2488 | struct il_priv *il = |
e2ebc833 | 2489 | container_of(data, struct il_priv, _3945.rfkill_poll.work); |
bc269a8e | 2490 | bool old_rfkill = test_bit(S_RFKILL, &il->status); |
e7392364 SG |
2491 | bool new_rfkill = |
2492 | !(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW); | |
4bc85c13 WYG |
2493 | |
2494 | if (new_rfkill != old_rfkill) { | |
2495 | if (new_rfkill) | |
bc269a8e | 2496 | set_bit(S_RFKILL, &il->status); |
4bc85c13 | 2497 | else |
bc269a8e | 2498 | clear_bit(S_RFKILL, &il->status); |
4bc85c13 | 2499 | |
46bc8d4b | 2500 | wiphy_rfkill_set_hw_state(il->hw->wiphy, new_rfkill); |
4bc85c13 | 2501 | |
58de00a4 | 2502 | D_RF_KILL("RF_KILL bit toggled to %s.\n", |
e7392364 | 2503 | new_rfkill ? "disable radio" : "enable radio"); |
4bc85c13 WYG |
2504 | } |
2505 | ||
2506 | /* Keep this running, even if radio now enabled. This will be | |
2507 | * cancelled in mac_start() if system decides to start again */ | |
46bc8d4b | 2508 | queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, |
4bc85c13 WYG |
2509 | round_jiffies_relative(2 * HZ)); |
2510 | ||
2511 | } | |
2512 | ||
e7392364 SG |
2513 | int |
2514 | il3945_request_scan(struct il_priv *il, struct ieee80211_vif *vif) | |
4bc85c13 | 2515 | { |
e2ebc833 | 2516 | struct il_host_cmd cmd = { |
4d69c752 | 2517 | .id = C_SCAN, |
e2ebc833 | 2518 | .len = sizeof(struct il3945_scan_cmd), |
4bc85c13 WYG |
2519 | .flags = CMD_SIZE_HUGE, |
2520 | }; | |
e2ebc833 | 2521 | struct il3945_scan_cmd *scan; |
4bc85c13 WYG |
2522 | u8 n_probes = 0; |
2523 | enum ieee80211_band band; | |
2524 | bool is_active = false; | |
2525 | int ret; | |
dd6d2a8a | 2526 | u16 len; |
4bc85c13 | 2527 | |
46bc8d4b | 2528 | lockdep_assert_held(&il->mutex); |
4bc85c13 | 2529 | |
46bc8d4b | 2530 | if (!il->scan_cmd) { |
e7392364 SG |
2531 | il->scan_cmd = |
2532 | kmalloc(sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE, | |
2533 | GFP_KERNEL); | |
46bc8d4b | 2534 | if (!il->scan_cmd) { |
58de00a4 | 2535 | D_SCAN("Fail to allocate scan memory\n"); |
4bc85c13 WYG |
2536 | return -ENOMEM; |
2537 | } | |
2538 | } | |
46bc8d4b | 2539 | scan = il->scan_cmd; |
e2ebc833 | 2540 | memset(scan, 0, sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE); |
4bc85c13 | 2541 | |
e2ebc833 SG |
2542 | scan->quiet_plcp_th = IL_PLCP_QUIET_THRESH; |
2543 | scan->quiet_time = IL_ACTIVE_QUIET_TIME; | |
4bc85c13 | 2544 | |
7c2cde2e | 2545 | if (il_is_associated(il)) { |
dd6d2a8a | 2546 | u16 interval; |
4bc85c13 WYG |
2547 | u32 extra; |
2548 | u32 suspend_time = 100; | |
2549 | u32 scan_suspend_time = 100; | |
2550 | ||
58de00a4 | 2551 | D_INFO("Scanning while associated...\n"); |
4bc85c13 | 2552 | |
dd6d2a8a | 2553 | interval = vif->bss_conf.beacon_int; |
4bc85c13 WYG |
2554 | |
2555 | scan->suspend_time = 0; | |
2556 | scan->max_out_time = cpu_to_le32(200 * 1024); | |
2557 | if (!interval) | |
2558 | interval = suspend_time; | |
2559 | /* | |
2560 | * suspend time format: | |
2561 | * 0-19: beacon interval in usec (time before exec.) | |
2562 | * 20-23: 0 | |
2563 | * 24-31: number of beacons (suspend between channels) | |
2564 | */ | |
2565 | ||
2566 | extra = (suspend_time / interval) << 24; | |
e7392364 SG |
2567 | scan_suspend_time = |
2568 | 0xFF0FFFFF & (extra | ((suspend_time % interval) * 1024)); | |
4bc85c13 WYG |
2569 | |
2570 | scan->suspend_time = cpu_to_le32(scan_suspend_time); | |
58de00a4 | 2571 | D_SCAN("suspend_time 0x%X beacon interval %d\n", |
e7392364 | 2572 | scan_suspend_time, interval); |
4bc85c13 WYG |
2573 | } |
2574 | ||
46bc8d4b | 2575 | if (il->scan_request->n_ssids) { |
4bc85c13 | 2576 | int i, p = 0; |
58de00a4 | 2577 | D_SCAN("Kicking off active scan\n"); |
46bc8d4b | 2578 | for (i = 0; i < il->scan_request->n_ssids; i++) { |
4bc85c13 | 2579 | /* always does wildcard anyway */ |
46bc8d4b | 2580 | if (!il->scan_request->ssids[i].ssid_len) |
4bc85c13 WYG |
2581 | continue; |
2582 | scan->direct_scan[p].id = WLAN_EID_SSID; | |
2583 | scan->direct_scan[p].len = | |
e7392364 | 2584 | il->scan_request->ssids[i].ssid_len; |
4bc85c13 | 2585 | memcpy(scan->direct_scan[p].ssid, |
46bc8d4b SG |
2586 | il->scan_request->ssids[i].ssid, |
2587 | il->scan_request->ssids[i].ssid_len); | |
4bc85c13 WYG |
2588 | n_probes++; |
2589 | p++; | |
2590 | } | |
2591 | is_active = true; | |
2592 | } else | |
58de00a4 | 2593 | D_SCAN("Kicking off passive scan.\n"); |
4bc85c13 WYG |
2594 | |
2595 | /* We don't build a direct scan probe request; the uCode will do | |
2596 | * that based on the direct_mask added to each channel entry */ | |
2597 | scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; | |
b16db50a | 2598 | scan->tx_cmd.sta_id = il->hw_params.bcast_id; |
4bc85c13 WYG |
2599 | scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
2600 | ||
2601 | /* flags + rate selection */ | |
2602 | ||
46bc8d4b | 2603 | switch (il->scan_band) { |
4bc85c13 WYG |
2604 | case IEEE80211_BAND_2GHZ: |
2605 | scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; | |
2eb05816 | 2606 | scan->tx_cmd.rate = RATE_1M_PLCP; |
4bc85c13 WYG |
2607 | band = IEEE80211_BAND_2GHZ; |
2608 | break; | |
2609 | case IEEE80211_BAND_5GHZ: | |
2eb05816 | 2610 | scan->tx_cmd.rate = RATE_6M_PLCP; |
4bc85c13 WYG |
2611 | band = IEEE80211_BAND_5GHZ; |
2612 | break; | |
2613 | default: | |
9406f797 | 2614 | IL_WARN("Invalid scan band\n"); |
4bc85c13 WYG |
2615 | return -EIO; |
2616 | } | |
2617 | ||
2618 | /* | |
68acc4af SG |
2619 | * If active scaning is requested but a certain channel is marked |
2620 | * passive, we can do active scanning if we detect transmissions. For | |
2621 | * passive only scanning disable switching to active on any channel. | |
4bc85c13 | 2622 | */ |
e7392364 | 2623 | scan->good_CRC_th = |
68acc4af | 2624 | is_active ? IL_GOOD_CRC_TH_DEFAULT : IL_GOOD_CRC_TH_NEVER; |
e7392364 SG |
2625 | |
2626 | len = | |
2627 | il_fill_probe_req(il, (struct ieee80211_mgmt *)scan->data, | |
2628 | vif->addr, il->scan_request->ie, | |
2629 | il->scan_request->ie_len, | |
2630 | IL_MAX_SCAN_SIZE - sizeof(*scan)); | |
dd6d2a8a SG |
2631 | scan->tx_cmd.len = cpu_to_le16(len); |
2632 | ||
4bc85c13 | 2633 | /* select Rx antennas */ |
46bc8d4b | 2634 | scan->flags |= il3945_get_antenna_flags(il); |
4bc85c13 | 2635 | |
e7392364 SG |
2636 | scan->channel_count = |
2637 | il3945_get_channels_for_scan(il, band, is_active, n_probes, | |
2638 | (void *)&scan->data[len], vif); | |
4bc85c13 | 2639 | if (scan->channel_count == 0) { |
58de00a4 | 2640 | D_SCAN("channel count %d\n", scan->channel_count); |
4bc85c13 WYG |
2641 | return -EIO; |
2642 | } | |
2643 | ||
e7392364 SG |
2644 | cmd.len += |
2645 | le16_to_cpu(scan->tx_cmd.len) + | |
e2ebc833 | 2646 | scan->channel_count * sizeof(struct il3945_scan_channel); |
4bc85c13 WYG |
2647 | cmd.data = scan; |
2648 | scan->len = cpu_to_le16(cmd.len); | |
2649 | ||
a6766ccd | 2650 | set_bit(S_SCAN_HW, &il->status); |
46bc8d4b | 2651 | ret = il_send_cmd_sync(il, &cmd); |
4bc85c13 | 2652 | if (ret) |
a6766ccd | 2653 | clear_bit(S_SCAN_HW, &il->status); |
4bc85c13 WYG |
2654 | return ret; |
2655 | } | |
2656 | ||
e7392364 SG |
2657 | void |
2658 | il3945_post_scan(struct il_priv *il) | |
4bc85c13 | 2659 | { |
4bc85c13 WYG |
2660 | /* |
2661 | * Since setting the RXON may have been deferred while | |
2662 | * performing the scan, fire one off if needed | |
2663 | */ | |
c8b03958 | 2664 | if (memcmp(&il->staging, &il->active, sizeof(il->staging))) |
83007196 | 2665 | il3945_commit_rxon(il); |
4bc85c13 WYG |
2666 | } |
2667 | ||
e7392364 SG |
2668 | static void |
2669 | il3945_bg_restart(struct work_struct *data) | |
4bc85c13 | 2670 | { |
46bc8d4b | 2671 | struct il_priv *il = container_of(data, struct il_priv, restart); |
4bc85c13 | 2672 | |
a6766ccd | 2673 | if (test_bit(S_EXIT_PENDING, &il->status)) |
4bc85c13 WYG |
2674 | return; |
2675 | ||
a6766ccd | 2676 | if (test_and_clear_bit(S_FW_ERROR, &il->status)) { |
46bc8d4b | 2677 | mutex_lock(&il->mutex); |
46bc8d4b SG |
2678 | il->is_open = 0; |
2679 | mutex_unlock(&il->mutex); | |
2680 | il3945_down(il); | |
2681 | ieee80211_restart_hw(il->hw); | |
4bc85c13 | 2682 | } else { |
46bc8d4b | 2683 | il3945_down(il); |
4bc85c13 | 2684 | |
46bc8d4b | 2685 | mutex_lock(&il->mutex); |
a6766ccd | 2686 | if (test_bit(S_EXIT_PENDING, &il->status)) { |
46bc8d4b | 2687 | mutex_unlock(&il->mutex); |
4bc85c13 | 2688 | return; |
28a6e577 | 2689 | } |
4bc85c13 | 2690 | |
46bc8d4b SG |
2691 | __il3945_up(il); |
2692 | mutex_unlock(&il->mutex); | |
4bc85c13 WYG |
2693 | } |
2694 | } | |
2695 | ||
e7392364 SG |
2696 | static void |
2697 | il3945_bg_rx_replenish(struct work_struct *data) | |
4bc85c13 | 2698 | { |
e7392364 | 2699 | struct il_priv *il = container_of(data, struct il_priv, rx_replenish); |
4bc85c13 | 2700 | |
46bc8d4b | 2701 | mutex_lock(&il->mutex); |
a6766ccd | 2702 | if (test_bit(S_EXIT_PENDING, &il->status)) |
28a6e577 | 2703 | goto out; |
4bc85c13 | 2704 | |
46bc8d4b | 2705 | il3945_rx_replenish(il); |
28a6e577 | 2706 | out: |
46bc8d4b | 2707 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2708 | } |
2709 | ||
e7392364 SG |
2710 | void |
2711 | il3945_post_associate(struct il_priv *il) | |
4bc85c13 WYG |
2712 | { |
2713 | int rc = 0; | |
2714 | struct ieee80211_conf *conf = NULL; | |
4bc85c13 | 2715 | |
83007196 | 2716 | if (!il->vif || !il->is_open) |
4bc85c13 WYG |
2717 | return; |
2718 | ||
83007196 | 2719 | D_ASSOC("Associated as %d to: %pM\n", il->vif->bss_conf.aid, |
c8b03958 | 2720 | il->active.bssid_addr); |
4bc85c13 | 2721 | |
a6766ccd | 2722 | if (test_bit(S_EXIT_PENDING, &il->status)) |
4bc85c13 WYG |
2723 | return; |
2724 | ||
46bc8d4b | 2725 | il_scan_cancel_timeout(il, 200); |
4bc85c13 | 2726 | |
6278ddab | 2727 | conf = &il->hw->conf; |
4bc85c13 | 2728 | |
c8b03958 | 2729 | il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
83007196 | 2730 | il3945_commit_rxon(il); |
4bc85c13 | 2731 | |
83007196 | 2732 | rc = il_send_rxon_timing(il); |
4bc85c13 | 2733 | if (rc) |
e7392364 | 2734 | IL_WARN("C_RXON_TIMING failed - " "Attempting to continue.\n"); |
4bc85c13 | 2735 | |
c8b03958 | 2736 | il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
4bc85c13 | 2737 | |
83007196 | 2738 | il->staging.assoc_id = cpu_to_le16(il->vif->bss_conf.aid); |
4bc85c13 | 2739 | |
83007196 SG |
2740 | D_ASSOC("assoc id %d beacon interval %d\n", il->vif->bss_conf.aid, |
2741 | il->vif->bss_conf.beacon_int); | |
4bc85c13 | 2742 | |
83007196 | 2743 | if (il->vif->bss_conf.use_short_preamble) |
c8b03958 | 2744 | il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
4bc85c13 | 2745 | else |
c8b03958 | 2746 | il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
4bc85c13 | 2747 | |
c8b03958 | 2748 | if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { |
83007196 | 2749 | if (il->vif->bss_conf.use_short_slot) |
c8b03958 | 2750 | il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
4bc85c13 | 2751 | else |
c8b03958 | 2752 | il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
4bc85c13 WYG |
2753 | } |
2754 | ||
83007196 | 2755 | il3945_commit_rxon(il); |
4bc85c13 | 2756 | |
83007196 | 2757 | switch (il->vif->type) { |
4bc85c13 | 2758 | case NL80211_IFTYPE_STATION: |
46bc8d4b | 2759 | il3945_rate_scale_init(il->hw, IL_AP_ID); |
4bc85c13 WYG |
2760 | break; |
2761 | case NL80211_IFTYPE_ADHOC: | |
46bc8d4b | 2762 | il3945_send_beacon_cmd(il); |
4bc85c13 WYG |
2763 | break; |
2764 | default: | |
e7392364 | 2765 | IL_ERR("%s Should not be called in %d mode\n", __func__, |
83007196 | 2766 | il->vif->type); |
4bc85c13 WYG |
2767 | break; |
2768 | } | |
2769 | } | |
2770 | ||
2771 | /***************************************************************************** | |
2772 | * | |
2773 | * mac80211 entry point functions | |
2774 | * | |
2775 | *****************************************************************************/ | |
2776 | ||
2777 | #define UCODE_READY_TIMEOUT (2 * HZ) | |
2778 | ||
e7392364 SG |
2779 | static int |
2780 | il3945_mac_start(struct ieee80211_hw *hw) | |
4bc85c13 | 2781 | { |
46bc8d4b | 2782 | struct il_priv *il = hw->priv; |
4bc85c13 WYG |
2783 | int ret; |
2784 | ||
4bc85c13 | 2785 | /* we should be verifying the device is ready to be opened */ |
46bc8d4b | 2786 | mutex_lock(&il->mutex); |
9ce7b73c | 2787 | D_MAC80211("enter\n"); |
4bc85c13 WYG |
2788 | |
2789 | /* fetch ucode file from disk, alloc and copy to bus-master buffers ... | |
2790 | * ucode filename and max sizes are card-specific. */ | |
2791 | ||
46bc8d4b SG |
2792 | if (!il->ucode_code.len) { |
2793 | ret = il3945_read_ucode(il); | |
4bc85c13 | 2794 | if (ret) { |
9406f797 | 2795 | IL_ERR("Could not read microcode: %d\n", ret); |
46bc8d4b | 2796 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2797 | goto out_release_irq; |
2798 | } | |
2799 | } | |
2800 | ||
46bc8d4b | 2801 | ret = __il3945_up(il); |
4bc85c13 | 2802 | |
46bc8d4b | 2803 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2804 | |
2805 | if (ret) | |
2806 | goto out_release_irq; | |
2807 | ||
58de00a4 | 2808 | D_INFO("Start UP work.\n"); |
4bc85c13 WYG |
2809 | |
2810 | /* Wait for START_ALIVE from ucode. Otherwise callbacks from | |
2811 | * mac80211 will not be run successfully. */ | |
46bc8d4b | 2812 | ret = wait_event_timeout(il->wait_command_queue, |
e7392364 SG |
2813 | test_bit(S_READY, &il->status), |
2814 | UCODE_READY_TIMEOUT); | |
4bc85c13 | 2815 | if (!ret) { |
a6766ccd | 2816 | if (!test_bit(S_READY, &il->status)) { |
e7392364 SG |
2817 | IL_ERR("Wait for START_ALIVE timeout after %dms.\n", |
2818 | jiffies_to_msecs(UCODE_READY_TIMEOUT)); | |
4bc85c13 WYG |
2819 | ret = -ETIMEDOUT; |
2820 | goto out_release_irq; | |
2821 | } | |
2822 | } | |
2823 | ||
2824 | /* ucode is running and will send rfkill notifications, | |
2825 | * no need to poll the killswitch state anymore */ | |
46bc8d4b | 2826 | cancel_delayed_work(&il->_3945.rfkill_poll); |
4bc85c13 | 2827 | |
46bc8d4b | 2828 | il->is_open = 1; |
58de00a4 | 2829 | D_MAC80211("leave\n"); |
4bc85c13 WYG |
2830 | return 0; |
2831 | ||
2832 | out_release_irq: | |
46bc8d4b | 2833 | il->is_open = 0; |
58de00a4 | 2834 | D_MAC80211("leave - failed\n"); |
4bc85c13 WYG |
2835 | return ret; |
2836 | } | |
2837 | ||
e7392364 SG |
2838 | static void |
2839 | il3945_mac_stop(struct ieee80211_hw *hw) | |
4bc85c13 | 2840 | { |
46bc8d4b | 2841 | struct il_priv *il = hw->priv; |
4bc85c13 | 2842 | |
58de00a4 | 2843 | D_MAC80211("enter\n"); |
4bc85c13 | 2844 | |
46bc8d4b | 2845 | if (!il->is_open) { |
58de00a4 | 2846 | D_MAC80211("leave - skip\n"); |
4bc85c13 WYG |
2847 | return; |
2848 | } | |
2849 | ||
46bc8d4b | 2850 | il->is_open = 0; |
4bc85c13 | 2851 | |
46bc8d4b | 2852 | il3945_down(il); |
4bc85c13 | 2853 | |
46bc8d4b | 2854 | flush_workqueue(il->workqueue); |
4bc85c13 WYG |
2855 | |
2856 | /* start polling the killswitch state again */ | |
46bc8d4b | 2857 | queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, |
4bc85c13 WYG |
2858 | round_jiffies_relative(2 * HZ)); |
2859 | ||
58de00a4 | 2860 | D_MAC80211("leave\n"); |
4bc85c13 WYG |
2861 | } |
2862 | ||
e7392364 | 2863 | static void |
36323f81 TH |
2864 | il3945_mac_tx(struct ieee80211_hw *hw, |
2865 | struct ieee80211_tx_control *control, | |
2866 | struct sk_buff *skb) | |
4bc85c13 | 2867 | { |
46bc8d4b | 2868 | struct il_priv *il = hw->priv; |
4bc85c13 | 2869 | |
58de00a4 | 2870 | D_MAC80211("enter\n"); |
4bc85c13 | 2871 | |
58de00a4 | 2872 | D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, |
e7392364 | 2873 | ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); |
4bc85c13 | 2874 | |
36323f81 | 2875 | if (il3945_tx_skb(il, control->sta, skb)) |
4bc85c13 WYG |
2876 | dev_kfree_skb_any(skb); |
2877 | ||
58de00a4 | 2878 | D_MAC80211("leave\n"); |
4bc85c13 WYG |
2879 | } |
2880 | ||
e7392364 SG |
2881 | void |
2882 | il3945_config_ap(struct il_priv *il) | |
4bc85c13 | 2883 | { |
83007196 | 2884 | struct ieee80211_vif *vif = il->vif; |
4bc85c13 WYG |
2885 | int rc = 0; |
2886 | ||
a6766ccd | 2887 | if (test_bit(S_EXIT_PENDING, &il->status)) |
4bc85c13 WYG |
2888 | return; |
2889 | ||
2890 | /* The following should be done only at AP bring up */ | |
7c2cde2e | 2891 | if (!(il_is_associated(il))) { |
4bc85c13 WYG |
2892 | |
2893 | /* RXON - unassoc (to set timing command) */ | |
c8b03958 | 2894 | il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
83007196 | 2895 | il3945_commit_rxon(il); |
4bc85c13 WYG |
2896 | |
2897 | /* RXON Timing */ | |
83007196 | 2898 | rc = il_send_rxon_timing(il); |
4bc85c13 | 2899 | if (rc) |
4d69c752 | 2900 | IL_WARN("C_RXON_TIMING failed - " |
e7392364 | 2901 | "Attempting to continue.\n"); |
4bc85c13 | 2902 | |
c8b03958 | 2903 | il->staging.assoc_id = 0; |
4bc85c13 WYG |
2904 | |
2905 | if (vif->bss_conf.use_short_preamble) | |
c8b03958 | 2906 | il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
4bc85c13 | 2907 | else |
c8b03958 | 2908 | il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
4bc85c13 | 2909 | |
c8b03958 | 2910 | if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { |
4bc85c13 | 2911 | if (vif->bss_conf.use_short_slot) |
c8b03958 | 2912 | il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
4bc85c13 | 2913 | else |
c8b03958 | 2914 | il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
4bc85c13 WYG |
2915 | } |
2916 | /* restore RXON assoc */ | |
c8b03958 | 2917 | il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
83007196 | 2918 | il3945_commit_rxon(il); |
4bc85c13 | 2919 | } |
46bc8d4b | 2920 | il3945_send_beacon_cmd(il); |
4bc85c13 WYG |
2921 | } |
2922 | ||
e7392364 SG |
2923 | static int |
2924 | il3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
2925 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, | |
2926 | struct ieee80211_key_conf *key) | |
4bc85c13 | 2927 | { |
46bc8d4b | 2928 | struct il_priv *il = hw->priv; |
4bc85c13 | 2929 | int ret = 0; |
e2ebc833 | 2930 | u8 sta_id = IL_INVALID_STATION; |
4bc85c13 WYG |
2931 | u8 static_key; |
2932 | ||
58de00a4 | 2933 | D_MAC80211("enter\n"); |
4bc85c13 | 2934 | |
e2ebc833 | 2935 | if (il3945_mod_params.sw_crypto) { |
58de00a4 | 2936 | D_MAC80211("leave - hwcrypto disabled\n"); |
4bc85c13 WYG |
2937 | return -EOPNOTSUPP; |
2938 | } | |
2939 | ||
2940 | /* | |
2941 | * To support IBSS RSN, don't program group keys in IBSS, the | |
2942 | * hardware will then not attempt to decrypt the frames. | |
2943 | */ | |
2944 | if (vif->type == NL80211_IFTYPE_ADHOC && | |
9ce7b73c SG |
2945 | !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
2946 | D_MAC80211("leave - IBSS RSN\n"); | |
4bc85c13 | 2947 | return -EOPNOTSUPP; |
9ce7b73c | 2948 | } |
4bc85c13 | 2949 | |
7c2cde2e | 2950 | static_key = !il_is_associated(il); |
4bc85c13 WYG |
2951 | |
2952 | if (!static_key) { | |
83007196 | 2953 | sta_id = il_sta_id_or_broadcast(il, sta); |
9ce7b73c SG |
2954 | if (sta_id == IL_INVALID_STATION) { |
2955 | D_MAC80211("leave - station not found\n"); | |
4bc85c13 | 2956 | return -EINVAL; |
9ce7b73c | 2957 | } |
4bc85c13 WYG |
2958 | } |
2959 | ||
46bc8d4b SG |
2960 | mutex_lock(&il->mutex); |
2961 | il_scan_cancel_timeout(il, 100); | |
4bc85c13 WYG |
2962 | |
2963 | switch (cmd) { | |
2964 | case SET_KEY: | |
2965 | if (static_key) | |
46bc8d4b | 2966 | ret = il3945_set_static_key(il, key); |
4bc85c13 | 2967 | else |
46bc8d4b | 2968 | ret = il3945_set_dynamic_key(il, key, sta_id); |
58de00a4 | 2969 | D_MAC80211("enable hwcrypto key\n"); |
4bc85c13 WYG |
2970 | break; |
2971 | case DISABLE_KEY: | |
2972 | if (static_key) | |
46bc8d4b | 2973 | ret = il3945_remove_static_key(il); |
4bc85c13 | 2974 | else |
46bc8d4b | 2975 | ret = il3945_clear_sta_key_info(il, sta_id); |
58de00a4 | 2976 | D_MAC80211("disable hwcrypto key\n"); |
4bc85c13 WYG |
2977 | break; |
2978 | default: | |
2979 | ret = -EINVAL; | |
2980 | } | |
2981 | ||
9ce7b73c | 2982 | D_MAC80211("leave ret %d\n", ret); |
46bc8d4b | 2983 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2984 | |
2985 | return ret; | |
2986 | } | |
2987 | ||
e7392364 SG |
2988 | static int |
2989 | il3945_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
2990 | struct ieee80211_sta *sta) | |
4bc85c13 | 2991 | { |
46bc8d4b | 2992 | struct il_priv *il = hw->priv; |
e2ebc833 | 2993 | struct il3945_sta_priv *sta_priv = (void *)sta->drv_priv; |
4bc85c13 WYG |
2994 | int ret; |
2995 | bool is_ap = vif->type == NL80211_IFTYPE_STATION; | |
2996 | u8 sta_id; | |
2997 | ||
46bc8d4b | 2998 | mutex_lock(&il->mutex); |
9ce7b73c | 2999 | D_INFO("station %pM\n", sta->addr); |
e2ebc833 | 3000 | sta_priv->common.sta_id = IL_INVALID_STATION; |
4bc85c13 | 3001 | |
83007196 | 3002 | ret = il_add_station_common(il, sta->addr, is_ap, sta, &sta_id); |
4bc85c13 | 3003 | if (ret) { |
e7392364 | 3004 | IL_ERR("Unable to add station %pM (%d)\n", sta->addr, ret); |
4bc85c13 | 3005 | /* Should we return success if return code is EEXIST ? */ |
46bc8d4b | 3006 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
3007 | return ret; |
3008 | } | |
3009 | ||
3010 | sta_priv->common.sta_id = sta_id; | |
3011 | ||
3012 | /* Initialize rate scaling */ | |
e7392364 | 3013 | D_INFO("Initializing rate scaling for station %pM\n", sta->addr); |
46bc8d4b SG |
3014 | il3945_rs_rate_init(il, sta, sta_id); |
3015 | mutex_unlock(&il->mutex); | |
4bc85c13 WYG |
3016 | |
3017 | return 0; | |
3018 | } | |
3019 | ||
e7392364 SG |
3020 | static void |
3021 | il3945_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, | |
3022 | unsigned int *total_flags, u64 multicast) | |
4bc85c13 | 3023 | { |
46bc8d4b | 3024 | struct il_priv *il = hw->priv; |
4bc85c13 | 3025 | __le32 filter_or = 0, filter_nand = 0; |
4bc85c13 WYG |
3026 | |
3027 | #define CHK(test, flag) do { \ | |
3028 | if (*total_flags & (test)) \ | |
3029 | filter_or |= (flag); \ | |
3030 | else \ | |
3031 | filter_nand |= (flag); \ | |
3032 | } while (0) | |
3033 | ||
e7392364 SG |
3034 | D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags, |
3035 | *total_flags); | |
4bc85c13 WYG |
3036 | |
3037 | CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK); | |
3038 | CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK); | |
3039 | CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); | |
3040 | ||
3041 | #undef CHK | |
3042 | ||
46bc8d4b | 3043 | mutex_lock(&il->mutex); |
4bc85c13 | 3044 | |
c8b03958 SG |
3045 | il->staging.filter_flags &= ~filter_nand; |
3046 | il->staging.filter_flags |= filter_or; | |
4bc85c13 WYG |
3047 | |
3048 | /* | |
3049 | * Not committing directly because hardware can perform a scan, | |
3050 | * but even if hw is ready, committing here breaks for some reason, | |
3051 | * we'll eventually commit the filter flags change anyway. | |
3052 | */ | |
3053 | ||
46bc8d4b | 3054 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
3055 | |
3056 | /* | |
3057 | * Receiving all multicast frames is always enabled by the | |
e2ebc833 | 3058 | * default flags setup in il_connection_init_rx_config() |
4bc85c13 WYG |
3059 | * since we currently do not support programming multicast |
3060 | * filters into the device. | |
3061 | */ | |
e7392364 SG |
3062 | *total_flags &= |
3063 | FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS | | |
3064 | FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; | |
4bc85c13 WYG |
3065 | } |
3066 | ||
4bc85c13 WYG |
3067 | /***************************************************************************** |
3068 | * | |
3069 | * sysfs attributes | |
3070 | * | |
3071 | *****************************************************************************/ | |
3072 | ||
d3175167 | 3073 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
3074 | |
3075 | /* | |
3076 | * The following adds a new attribute to the sysfs representation | |
3077 | * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/) | |
3078 | * used for controlling the debug level. | |
3079 | * | |
3080 | * See the level definitions in iwl for details. | |
3081 | * | |
3082 | * The debug_level being managed using sysfs below is a per device debug | |
3083 | * level that is used instead of the global debug level if it (the per | |
3084 | * device debug level) is set. | |
3085 | */ | |
e7392364 SG |
3086 | static ssize_t |
3087 | il3945_show_debug_level(struct device *d, struct device_attribute *attr, | |
3088 | char *buf) | |
4bc85c13 | 3089 | { |
46bc8d4b SG |
3090 | struct il_priv *il = dev_get_drvdata(d); |
3091 | return sprintf(buf, "0x%08X\n", il_get_debug_level(il)); | |
4bc85c13 | 3092 | } |
e7392364 SG |
3093 | |
3094 | static ssize_t | |
3095 | il3945_store_debug_level(struct device *d, struct device_attribute *attr, | |
3096 | const char *buf, size_t count) | |
4bc85c13 | 3097 | { |
46bc8d4b | 3098 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 WYG |
3099 | unsigned long val; |
3100 | int ret; | |
3101 | ||
3102 | ret = strict_strtoul(buf, 0, &val); | |
3103 | if (ret) | |
9406f797 | 3104 | IL_INFO("%s is not in hex or decimal form.\n", buf); |
288f9954 | 3105 | else |
46bc8d4b | 3106 | il->debug_level = val; |
288f9954 | 3107 | |
4bc85c13 WYG |
3108 | return strnlen(buf, count); |
3109 | } | |
3110 | ||
e7392364 SG |
3111 | static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, il3945_show_debug_level, |
3112 | il3945_store_debug_level); | |
4bc85c13 | 3113 | |
d3175167 | 3114 | #endif /* CONFIG_IWLEGACY_DEBUG */ |
4bc85c13 | 3115 | |
e7392364 SG |
3116 | static ssize_t |
3117 | il3945_show_temperature(struct device *d, struct device_attribute *attr, | |
3118 | char *buf) | |
4bc85c13 | 3119 | { |
46bc8d4b | 3120 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3121 | |
46bc8d4b | 3122 | if (!il_is_alive(il)) |
4bc85c13 WYG |
3123 | return -EAGAIN; |
3124 | ||
46bc8d4b | 3125 | return sprintf(buf, "%d\n", il3945_hw_get_temperature(il)); |
4bc85c13 WYG |
3126 | } |
3127 | ||
e2ebc833 | 3128 | static DEVICE_ATTR(temperature, S_IRUGO, il3945_show_temperature, NULL); |
4bc85c13 | 3129 | |
e7392364 SG |
3130 | static ssize_t |
3131 | il3945_show_tx_power(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 | 3132 | { |
46bc8d4b SG |
3133 | struct il_priv *il = dev_get_drvdata(d); |
3134 | return sprintf(buf, "%d\n", il->tx_power_user_lmt); | |
4bc85c13 WYG |
3135 | } |
3136 | ||
e7392364 SG |
3137 | static ssize_t |
3138 | il3945_store_tx_power(struct device *d, struct device_attribute *attr, | |
3139 | const char *buf, size_t count) | |
4bc85c13 | 3140 | { |
46bc8d4b | 3141 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 WYG |
3142 | char *p = (char *)buf; |
3143 | u32 val; | |
3144 | ||
3145 | val = simple_strtoul(p, &p, 10); | |
3146 | if (p == buf) | |
9406f797 | 3147 | IL_INFO(": %s is not in decimal form.\n", buf); |
4bc85c13 | 3148 | else |
46bc8d4b | 3149 | il3945_hw_reg_set_txpower(il, val); |
4bc85c13 WYG |
3150 | |
3151 | return count; | |
3152 | } | |
3153 | ||
e7392364 SG |
3154 | static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, il3945_show_tx_power, |
3155 | il3945_store_tx_power); | |
4bc85c13 | 3156 | |
e7392364 SG |
3157 | static ssize_t |
3158 | il3945_show_flags(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 | 3159 | { |
46bc8d4b | 3160 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3161 | |
c8b03958 | 3162 | return sprintf(buf, "0x%04X\n", il->active.flags); |
4bc85c13 WYG |
3163 | } |
3164 | ||
e7392364 SG |
3165 | static ssize_t |
3166 | il3945_store_flags(struct device *d, struct device_attribute *attr, | |
3167 | const char *buf, size_t count) | |
4bc85c13 | 3168 | { |
46bc8d4b | 3169 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3170 | u32 flags = simple_strtoul(buf, NULL, 0); |
4bc85c13 | 3171 | |
46bc8d4b | 3172 | mutex_lock(&il->mutex); |
c8b03958 | 3173 | if (le32_to_cpu(il->staging.flags) != flags) { |
4bc85c13 | 3174 | /* Cancel any currently running scans... */ |
46bc8d4b | 3175 | if (il_scan_cancel_timeout(il, 100)) |
9406f797 | 3176 | IL_WARN("Could not cancel scan.\n"); |
4bc85c13 | 3177 | else { |
e7392364 | 3178 | D_INFO("Committing rxon.flags = 0x%04X\n", flags); |
c8b03958 | 3179 | il->staging.flags = cpu_to_le32(flags); |
83007196 | 3180 | il3945_commit_rxon(il); |
4bc85c13 WYG |
3181 | } |
3182 | } | |
46bc8d4b | 3183 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
3184 | |
3185 | return count; | |
3186 | } | |
3187 | ||
e7392364 SG |
3188 | static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, il3945_show_flags, |
3189 | il3945_store_flags); | |
4bc85c13 | 3190 | |
e7392364 SG |
3191 | static ssize_t |
3192 | il3945_show_filter_flags(struct device *d, struct device_attribute *attr, | |
3193 | char *buf) | |
4bc85c13 | 3194 | { |
46bc8d4b | 3195 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3196 | |
c8b03958 | 3197 | return sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.filter_flags)); |
4bc85c13 WYG |
3198 | } |
3199 | ||
e7392364 SG |
3200 | static ssize_t |
3201 | il3945_store_filter_flags(struct device *d, struct device_attribute *attr, | |
3202 | const char *buf, size_t count) | |
4bc85c13 | 3203 | { |
46bc8d4b | 3204 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 WYG |
3205 | u32 filter_flags = simple_strtoul(buf, NULL, 0); |
3206 | ||
46bc8d4b | 3207 | mutex_lock(&il->mutex); |
c8b03958 | 3208 | if (le32_to_cpu(il->staging.filter_flags) != filter_flags) { |
4bc85c13 | 3209 | /* Cancel any currently running scans... */ |
46bc8d4b | 3210 | if (il_scan_cancel_timeout(il, 100)) |
9406f797 | 3211 | IL_WARN("Could not cancel scan.\n"); |
4bc85c13 | 3212 | else { |
e7392364 SG |
3213 | D_INFO("Committing rxon.filter_flags = " "0x%04X\n", |
3214 | filter_flags); | |
c8b03958 | 3215 | il->staging.filter_flags = cpu_to_le32(filter_flags); |
83007196 | 3216 | il3945_commit_rxon(il); |
4bc85c13 WYG |
3217 | } |
3218 | } | |
46bc8d4b | 3219 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
3220 | |
3221 | return count; | |
3222 | } | |
3223 | ||
e2ebc833 SG |
3224 | static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, il3945_show_filter_flags, |
3225 | il3945_store_filter_flags); | |
4bc85c13 | 3226 | |
e7392364 SG |
3227 | static ssize_t |
3228 | il3945_show_measurement(struct device *d, struct device_attribute *attr, | |
3229 | char *buf) | |
4bc85c13 | 3230 | { |
46bc8d4b | 3231 | struct il_priv *il = dev_get_drvdata(d); |
e2ebc833 | 3232 | struct il_spectrum_notification measure_report; |
4bc85c13 | 3233 | u32 size = sizeof(measure_report), len = 0, ofs = 0; |
1722f8e1 | 3234 | u8 *data = (u8 *) &measure_report; |
4bc85c13 WYG |
3235 | unsigned long flags; |
3236 | ||
46bc8d4b SG |
3237 | spin_lock_irqsave(&il->lock, flags); |
3238 | if (!(il->measurement_status & MEASUREMENT_READY)) { | |
3239 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 WYG |
3240 | return 0; |
3241 | } | |
46bc8d4b SG |
3242 | memcpy(&measure_report, &il->measure_report, size); |
3243 | il->measurement_status = 0; | |
3244 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 | 3245 | |
232913b5 | 3246 | while (size && PAGE_SIZE - len) { |
4bc85c13 WYG |
3247 | hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, |
3248 | PAGE_SIZE - len, 1); | |
3249 | len = strlen(buf); | |
3250 | if (PAGE_SIZE - len) | |
3251 | buf[len++] = '\n'; | |
3252 | ||
3253 | ofs += 16; | |
3254 | size -= min(size, 16U); | |
3255 | } | |
3256 | ||
3257 | return len; | |
3258 | } | |
3259 | ||
e7392364 SG |
3260 | static ssize_t |
3261 | il3945_store_measurement(struct device *d, struct device_attribute *attr, | |
3262 | const char *buf, size_t count) | |
4bc85c13 | 3263 | { |
46bc8d4b | 3264 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3265 | struct ieee80211_measurement_params params = { |
c8b03958 | 3266 | .channel = le16_to_cpu(il->active.channel), |
46bc8d4b | 3267 | .start_time = cpu_to_le64(il->_3945.last_tsf), |
4bc85c13 WYG |
3268 | .duration = cpu_to_le16(1), |
3269 | }; | |
e2ebc833 | 3270 | u8 type = IL_MEASURE_BASIC; |
4bc85c13 WYG |
3271 | u8 buffer[32]; |
3272 | u8 channel; | |
3273 | ||
3274 | if (count) { | |
3275 | char *p = buffer; | |
3276 | strncpy(buffer, buf, min(sizeof(buffer), count)); | |
3277 | channel = simple_strtoul(p, NULL, 0); | |
3278 | if (channel) | |
3279 | params.channel = channel; | |
3280 | ||
3281 | p = buffer; | |
3282 | while (*p && *p != ' ') | |
3283 | p++; | |
3284 | if (*p) | |
3285 | type = simple_strtoul(p + 1, NULL, 0); | |
3286 | } | |
3287 | ||
e7392364 SG |
3288 | D_INFO("Invoking measurement of type %d on " "channel %d (for '%s')\n", |
3289 | type, params.channel, buf); | |
46bc8d4b | 3290 | il3945_get_measurement(il, ¶ms, type); |
4bc85c13 WYG |
3291 | |
3292 | return count; | |
3293 | } | |
3294 | ||
e7392364 SG |
3295 | static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, il3945_show_measurement, |
3296 | il3945_store_measurement); | |
4bc85c13 | 3297 | |
e7392364 SG |
3298 | static ssize_t |
3299 | il3945_store_retry_rate(struct device *d, struct device_attribute *attr, | |
3300 | const char *buf, size_t count) | |
4bc85c13 | 3301 | { |
46bc8d4b | 3302 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3303 | |
46bc8d4b SG |
3304 | il->retry_rate = simple_strtoul(buf, NULL, 0); |
3305 | if (il->retry_rate <= 0) | |
3306 | il->retry_rate = 1; | |
4bc85c13 WYG |
3307 | |
3308 | return count; | |
3309 | } | |
3310 | ||
e7392364 SG |
3311 | static ssize_t |
3312 | il3945_show_retry_rate(struct device *d, struct device_attribute *attr, | |
3313 | char *buf) | |
4bc85c13 | 3314 | { |
46bc8d4b SG |
3315 | struct il_priv *il = dev_get_drvdata(d); |
3316 | return sprintf(buf, "%d", il->retry_rate); | |
4bc85c13 WYG |
3317 | } |
3318 | ||
e2ebc833 SG |
3319 | static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, il3945_show_retry_rate, |
3320 | il3945_store_retry_rate); | |
4bc85c13 | 3321 | |
e7392364 SG |
3322 | static ssize_t |
3323 | il3945_show_channels(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 WYG |
3324 | { |
3325 | /* all this shit doesn't belong into sysfs anyway */ | |
3326 | return 0; | |
3327 | } | |
3328 | ||
e2ebc833 | 3329 | static DEVICE_ATTR(channels, S_IRUSR, il3945_show_channels, NULL); |
4bc85c13 | 3330 | |
e7392364 SG |
3331 | static ssize_t |
3332 | il3945_show_antenna(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 | 3333 | { |
46bc8d4b | 3334 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3335 | |
46bc8d4b | 3336 | if (!il_is_alive(il)) |
4bc85c13 WYG |
3337 | return -EAGAIN; |
3338 | ||
e2ebc833 | 3339 | return sprintf(buf, "%d\n", il3945_mod_params.antenna); |
4bc85c13 WYG |
3340 | } |
3341 | ||
e7392364 SG |
3342 | static ssize_t |
3343 | il3945_store_antenna(struct device *d, struct device_attribute *attr, | |
3344 | const char *buf, size_t count) | |
4bc85c13 | 3345 | { |
46bc8d4b | 3346 | struct il_priv *il __maybe_unused = dev_get_drvdata(d); |
4bc85c13 WYG |
3347 | int ant; |
3348 | ||
3349 | if (count == 0) | |
3350 | return 0; | |
3351 | ||
3352 | if (sscanf(buf, "%1i", &ant) != 1) { | |
58de00a4 | 3353 | D_INFO("not in hex or decimal form.\n"); |
4bc85c13 WYG |
3354 | return count; |
3355 | } | |
3356 | ||
232913b5 | 3357 | if (ant >= 0 && ant <= 2) { |
58de00a4 | 3358 | D_INFO("Setting antenna select to %d.\n", ant); |
e2ebc833 | 3359 | il3945_mod_params.antenna = (enum il3945_antenna)ant; |
4bc85c13 | 3360 | } else |
58de00a4 | 3361 | D_INFO("Bad antenna select value %d.\n", ant); |
4bc85c13 | 3362 | |
4bc85c13 WYG |
3363 | return count; |
3364 | } | |
3365 | ||
e7392364 SG |
3366 | static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, il3945_show_antenna, |
3367 | il3945_store_antenna); | |
4bc85c13 | 3368 | |
e7392364 SG |
3369 | static ssize_t |
3370 | il3945_show_status(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 | 3371 | { |
46bc8d4b SG |
3372 | struct il_priv *il = dev_get_drvdata(d); |
3373 | if (!il_is_alive(il)) | |
4bc85c13 | 3374 | return -EAGAIN; |
46bc8d4b | 3375 | return sprintf(buf, "0x%08x\n", (int)il->status); |
4bc85c13 WYG |
3376 | } |
3377 | ||
e2ebc833 | 3378 | static DEVICE_ATTR(status, S_IRUGO, il3945_show_status, NULL); |
4bc85c13 | 3379 | |
e7392364 SG |
3380 | static ssize_t |
3381 | il3945_dump_error_log(struct device *d, struct device_attribute *attr, | |
3382 | const char *buf, size_t count) | |
4bc85c13 | 3383 | { |
46bc8d4b | 3384 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 WYG |
3385 | char *p = (char *)buf; |
3386 | ||
3387 | if (p[0] == '1') | |
46bc8d4b | 3388 | il3945_dump_nic_error_log(il); |
4bc85c13 WYG |
3389 | |
3390 | return strnlen(buf, count); | |
3391 | } | |
3392 | ||
e2ebc833 | 3393 | static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, il3945_dump_error_log); |
4bc85c13 WYG |
3394 | |
3395 | /***************************************************************************** | |
3396 | * | |
3397 | * driver setup and tear down | |
3398 | * | |
3399 | *****************************************************************************/ | |
3400 | ||
e7392364 SG |
3401 | static void |
3402 | il3945_setup_deferred_work(struct il_priv *il) | |
4bc85c13 | 3403 | { |
46bc8d4b | 3404 | il->workqueue = create_singlethread_workqueue(DRV_NAME); |
4bc85c13 | 3405 | |
46bc8d4b | 3406 | init_waitqueue_head(&il->wait_command_queue); |
4bc85c13 | 3407 | |
46bc8d4b SG |
3408 | INIT_WORK(&il->restart, il3945_bg_restart); |
3409 | INIT_WORK(&il->rx_replenish, il3945_bg_rx_replenish); | |
3410 | INIT_DELAYED_WORK(&il->init_alive_start, il3945_bg_init_alive_start); | |
3411 | INIT_DELAYED_WORK(&il->alive_start, il3945_bg_alive_start); | |
3412 | INIT_DELAYED_WORK(&il->_3945.rfkill_poll, il3945_rfkill_poll); | |
4bc85c13 | 3413 | |
46bc8d4b | 3414 | il_setup_scan_deferred_work(il); |
4bc85c13 | 3415 | |
46bc8d4b | 3416 | il3945_hw_setup_deferred_work(il); |
4bc85c13 | 3417 | |
46bc8d4b SG |
3418 | init_timer(&il->watchdog); |
3419 | il->watchdog.data = (unsigned long)il; | |
3420 | il->watchdog.function = il_bg_watchdog; | |
4bc85c13 | 3421 | |
e7392364 SG |
3422 | tasklet_init(&il->irq_tasklet, |
3423 | (void (*)(unsigned long))il3945_irq_tasklet, | |
3424 | (unsigned long)il); | |
4bc85c13 WYG |
3425 | } |
3426 | ||
e7392364 SG |
3427 | static void |
3428 | il3945_cancel_deferred_work(struct il_priv *il) | |
4bc85c13 | 3429 | { |
46bc8d4b | 3430 | il3945_hw_cancel_deferred_work(il); |
4bc85c13 | 3431 | |
46bc8d4b SG |
3432 | cancel_delayed_work_sync(&il->init_alive_start); |
3433 | cancel_delayed_work(&il->alive_start); | |
4bc85c13 | 3434 | |
46bc8d4b | 3435 | il_cancel_scan_deferred_work(il); |
4bc85c13 WYG |
3436 | } |
3437 | ||
e2ebc833 | 3438 | static struct attribute *il3945_sysfs_entries[] = { |
4bc85c13 WYG |
3439 | &dev_attr_antenna.attr, |
3440 | &dev_attr_channels.attr, | |
3441 | &dev_attr_dump_errors.attr, | |
3442 | &dev_attr_flags.attr, | |
3443 | &dev_attr_filter_flags.attr, | |
3444 | &dev_attr_measurement.attr, | |
3445 | &dev_attr_retry_rate.attr, | |
3446 | &dev_attr_status.attr, | |
3447 | &dev_attr_temperature.attr, | |
3448 | &dev_attr_tx_power.attr, | |
d3175167 | 3449 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
3450 | &dev_attr_debug_level.attr, |
3451 | #endif | |
3452 | NULL | |
3453 | }; | |
3454 | ||
e2ebc833 | 3455 | static struct attribute_group il3945_attribute_group = { |
4bc85c13 | 3456 | .name = NULL, /* put in device directory */ |
e2ebc833 | 3457 | .attrs = il3945_sysfs_entries, |
4bc85c13 WYG |
3458 | }; |
3459 | ||
c39ae9fd | 3460 | struct ieee80211_ops il3945_mac_ops = { |
e2ebc833 SG |
3461 | .tx = il3945_mac_tx, |
3462 | .start = il3945_mac_start, | |
3463 | .stop = il3945_mac_stop, | |
3464 | .add_interface = il_mac_add_interface, | |
3465 | .remove_interface = il_mac_remove_interface, | |
3466 | .change_interface = il_mac_change_interface, | |
3467 | .config = il_mac_config, | |
3468 | .configure_filter = il3945_configure_filter, | |
3469 | .set_key = il3945_mac_set_key, | |
3470 | .conf_tx = il_mac_conf_tx, | |
3471 | .reset_tsf = il_mac_reset_tsf, | |
3472 | .bss_info_changed = il_mac_bss_info_changed, | |
3473 | .hw_scan = il_mac_hw_scan, | |
3474 | .sta_add = il3945_mac_sta_add, | |
3475 | .sta_remove = il_mac_sta_remove, | |
3476 | .tx_last_beacon = il_mac_tx_last_beacon, | |
4bc85c13 WYG |
3477 | }; |
3478 | ||
e7392364 SG |
3479 | static int |
3480 | il3945_init_drv(struct il_priv *il) | |
4bc85c13 WYG |
3481 | { |
3482 | int ret; | |
46bc8d4b | 3483 | struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; |
4bc85c13 | 3484 | |
46bc8d4b SG |
3485 | il->retry_rate = 1; |
3486 | il->beacon_skb = NULL; | |
4bc85c13 | 3487 | |
46bc8d4b SG |
3488 | spin_lock_init(&il->sta_lock); |
3489 | spin_lock_init(&il->hcmd_lock); | |
4bc85c13 | 3490 | |
46bc8d4b | 3491 | INIT_LIST_HEAD(&il->free_frames); |
4bc85c13 | 3492 | |
46bc8d4b | 3493 | mutex_init(&il->mutex); |
4bc85c13 | 3494 | |
46bc8d4b SG |
3495 | il->ieee_channels = NULL; |
3496 | il->ieee_rates = NULL; | |
3497 | il->band = IEEE80211_BAND_2GHZ; | |
4bc85c13 | 3498 | |
46bc8d4b SG |
3499 | il->iw_mode = NL80211_IFTYPE_STATION; |
3500 | il->missed_beacon_threshold = IL_MISSED_BEACON_THRESHOLD_DEF; | |
4bc85c13 WYG |
3501 | |
3502 | /* initialize force reset */ | |
46bc8d4b | 3503 | il->force_reset.reset_duration = IL_DELAY_NEXT_FORCE_FW_RELOAD; |
4bc85c13 | 3504 | |
4bc85c13 | 3505 | if (eeprom->version < EEPROM_3945_EEPROM_VERSION) { |
9406f797 | 3506 | IL_WARN("Unsupported EEPROM version: 0x%04X\n", |
e7392364 | 3507 | eeprom->version); |
4bc85c13 WYG |
3508 | ret = -EINVAL; |
3509 | goto err; | |
3510 | } | |
46bc8d4b | 3511 | ret = il_init_channel_map(il); |
4bc85c13 | 3512 | if (ret) { |
9406f797 | 3513 | IL_ERR("initializing regulatory failed: %d\n", ret); |
4bc85c13 WYG |
3514 | goto err; |
3515 | } | |
3516 | ||
3517 | /* Set up txpower settings in driver for all channels */ | |
46bc8d4b | 3518 | if (il3945_txpower_set_from_eeprom(il)) { |
4bc85c13 WYG |
3519 | ret = -EIO; |
3520 | goto err_free_channel_map; | |
3521 | } | |
3522 | ||
46bc8d4b | 3523 | ret = il_init_geos(il); |
4bc85c13 | 3524 | if (ret) { |
9406f797 | 3525 | IL_ERR("initializing geos failed: %d\n", ret); |
4bc85c13 WYG |
3526 | goto err_free_channel_map; |
3527 | } | |
46bc8d4b | 3528 | il3945_init_hw_rates(il, il->ieee_rates); |
4bc85c13 WYG |
3529 | |
3530 | return 0; | |
3531 | ||
3532 | err_free_channel_map: | |
46bc8d4b | 3533 | il_free_channel_map(il); |
4bc85c13 WYG |
3534 | err: |
3535 | return ret; | |
3536 | } | |
3537 | ||
d3175167 | 3538 | #define IL3945_MAX_PROBE_REQUEST 200 |
4bc85c13 | 3539 | |
e7392364 SG |
3540 | static int |
3541 | il3945_setup_mac(struct il_priv *il) | |
4bc85c13 WYG |
3542 | { |
3543 | int ret; | |
46bc8d4b | 3544 | struct ieee80211_hw *hw = il->hw; |
4bc85c13 WYG |
3545 | |
3546 | hw->rate_control_algorithm = "iwl-3945-rs"; | |
e2ebc833 SG |
3547 | hw->sta_data_size = sizeof(struct il3945_sta_priv); |
3548 | hw->vif_data_size = sizeof(struct il_vif_priv); | |
4bc85c13 WYG |
3549 | |
3550 | /* Tell mac80211 our characteristics */ | |
e7392364 | 3551 | hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_SPECTRUM_MGMT; |
4bc85c13 | 3552 | |
8c9c48d5 SG |
3553 | hw->wiphy->interface_modes = |
3554 | BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); | |
4bc85c13 | 3555 | |
e7392364 SG |
3556 | hw->wiphy->flags |= |
3557 | WIPHY_FLAG_CUSTOM_REGULATORY | WIPHY_FLAG_DISABLE_BEACON_HINTS | | |
3558 | WIPHY_FLAG_IBSS_RSN; | |
4bc85c13 WYG |
3559 | |
3560 | hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945; | |
3561 | /* we create the 802.11 header and a zero-length SSID element */ | |
d3175167 | 3562 | hw->wiphy->max_scan_ie_len = IL3945_MAX_PROBE_REQUEST - 24 - 2; |
4bc85c13 WYG |
3563 | |
3564 | /* Default value; 4 EDCA QOS priorities */ | |
3565 | hw->queues = 4; | |
3566 | ||
46bc8d4b SG |
3567 | if (il->bands[IEEE80211_BAND_2GHZ].n_channels) |
3568 | il->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
e7392364 | 3569 | &il->bands[IEEE80211_BAND_2GHZ]; |
4bc85c13 | 3570 | |
46bc8d4b SG |
3571 | if (il->bands[IEEE80211_BAND_5GHZ].n_channels) |
3572 | il->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
e7392364 | 3573 | &il->bands[IEEE80211_BAND_5GHZ]; |
4bc85c13 | 3574 | |
46bc8d4b | 3575 | il_leds_init(il); |
4bc85c13 | 3576 | |
46bc8d4b | 3577 | ret = ieee80211_register_hw(il->hw); |
4bc85c13 | 3578 | if (ret) { |
9406f797 | 3579 | IL_ERR("Failed to register hw (error %d)\n", ret); |
4bc85c13 WYG |
3580 | return ret; |
3581 | } | |
46bc8d4b | 3582 | il->mac80211_registered = 1; |
4bc85c13 WYG |
3583 | |
3584 | return 0; | |
3585 | } | |
3586 | ||
e7392364 SG |
3587 | static int |
3588 | il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
4bc85c13 | 3589 | { |
7c2cde2e | 3590 | int err = 0; |
46bc8d4b | 3591 | struct il_priv *il; |
4bc85c13 | 3592 | struct ieee80211_hw *hw; |
e2ebc833 SG |
3593 | struct il_cfg *cfg = (struct il_cfg *)(ent->driver_data); |
3594 | struct il3945_eeprom *eeprom; | |
4bc85c13 WYG |
3595 | unsigned long flags; |
3596 | ||
3597 | /*********************** | |
3598 | * 1. Allocating HW data | |
3599 | * ********************/ | |
3600 | ||
c39ae9fd SG |
3601 | hw = ieee80211_alloc_hw(sizeof(struct il_priv), &il3945_mac_ops); |
3602 | if (!hw) { | |
4bc85c13 WYG |
3603 | err = -ENOMEM; |
3604 | goto out; | |
3605 | } | |
46bc8d4b | 3606 | il = hw->priv; |
c39ae9fd | 3607 | il->hw = hw; |
4bc85c13 WYG |
3608 | SET_IEEE80211_DEV(hw, &pdev->dev); |
3609 | ||
d3175167 | 3610 | il->cmd_queue = IL39_CMD_QUEUE_NUM; |
4bc85c13 | 3611 | |
4bc85c13 WYG |
3612 | /* |
3613 | * Disabling hardware scan means that mac80211 will perform scans | |
3614 | * "the hard way", rather than using device's scan. | |
3615 | */ | |
e2ebc833 | 3616 | if (il3945_mod_params.disable_hw_scan) { |
58de00a4 | 3617 | D_INFO("Disabling hw_scan\n"); |
c39ae9fd | 3618 | il3945_mac_ops.hw_scan = NULL; |
4bc85c13 WYG |
3619 | } |
3620 | ||
58de00a4 | 3621 | D_INFO("*** LOAD DRIVER ***\n"); |
46bc8d4b | 3622 | il->cfg = cfg; |
c39ae9fd | 3623 | il->ops = &il3945_ops; |
93b7654e SG |
3624 | #ifdef CONFIG_IWLEGACY_DEBUGFS |
3625 | il->debugfs_ops = &il3945_debugfs_ops; | |
3626 | #endif | |
46bc8d4b SG |
3627 | il->pci_dev = pdev; |
3628 | il->inta_mask = CSR_INI_SET_MASK; | |
4bc85c13 | 3629 | |
4bc85c13 WYG |
3630 | /*************************** |
3631 | * 2. Initializing PCI bus | |
3632 | * *************************/ | |
e7392364 SG |
3633 | pci_disable_link_state(pdev, |
3634 | PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | | |
3635 | PCIE_LINK_STATE_CLKPM); | |
4bc85c13 WYG |
3636 | |
3637 | if (pci_enable_device(pdev)) { | |
3638 | err = -ENODEV; | |
3639 | goto out_ieee80211_free_hw; | |
3640 | } | |
3641 | ||
3642 | pci_set_master(pdev); | |
3643 | ||
3644 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3645 | if (!err) | |
3646 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3647 | if (err) { | |
9406f797 | 3648 | IL_WARN("No suitable DMA available.\n"); |
4bc85c13 WYG |
3649 | goto out_pci_disable_device; |
3650 | } | |
3651 | ||
46bc8d4b | 3652 | pci_set_drvdata(pdev, il); |
4bc85c13 WYG |
3653 | err = pci_request_regions(pdev, DRV_NAME); |
3654 | if (err) | |
3655 | goto out_pci_disable_device; | |
3656 | ||
3657 | /*********************** | |
3658 | * 3. Read REV Register | |
3659 | * ********************/ | |
a5f16137 | 3660 | il->hw_base = pci_ioremap_bar(pdev, 0); |
46bc8d4b | 3661 | if (!il->hw_base) { |
4bc85c13 WYG |
3662 | err = -ENODEV; |
3663 | goto out_pci_release_regions; | |
3664 | } | |
3665 | ||
58de00a4 | 3666 | D_INFO("pci_resource_len = 0x%08llx\n", |
e7392364 | 3667 | (unsigned long long)pci_resource_len(pdev, 0)); |
58de00a4 | 3668 | D_INFO("pci_resource_base = %p\n", il->hw_base); |
4bc85c13 WYG |
3669 | |
3670 | /* We disable the RETRY_TIMEOUT register (0x41) to keep | |
3671 | * PCI Tx retries from interfering with C3 CPU state */ | |
3672 | pci_write_config_byte(pdev, 0x41, 0x00); | |
3673 | ||
f03ee2a8 | 3674 | /* these spin locks will be used in apm_init and EEPROM access |
4bc85c13 WYG |
3675 | * we should init now |
3676 | */ | |
46bc8d4b SG |
3677 | spin_lock_init(&il->reg_lock); |
3678 | spin_lock_init(&il->lock); | |
4bc85c13 WYG |
3679 | |
3680 | /* | |
3681 | * stop and reset the on-board processor just in case it is in a | |
3682 | * strange state ... like being left stranded by a primary kernel | |
3683 | * and this is now the kdump kernel trying to start up | |
3684 | */ | |
841b2cca | 3685 | _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
4bc85c13 WYG |
3686 | |
3687 | /*********************** | |
3688 | * 4. Read EEPROM | |
3689 | * ********************/ | |
3690 | ||
3691 | /* Read the EEPROM */ | |
46bc8d4b | 3692 | err = il_eeprom_init(il); |
4bc85c13 | 3693 | if (err) { |
9406f797 | 3694 | IL_ERR("Unable to init EEPROM\n"); |
4bc85c13 WYG |
3695 | goto out_iounmap; |
3696 | } | |
3697 | /* MAC Address location in EEPROM same for 3945/4965 */ | |
46bc8d4b | 3698 | eeprom = (struct il3945_eeprom *)il->eeprom; |
58de00a4 | 3699 | D_INFO("MAC address: %pM\n", eeprom->mac_address); |
46bc8d4b | 3700 | SET_IEEE80211_PERM_ADDR(il->hw, eeprom->mac_address); |
4bc85c13 WYG |
3701 | |
3702 | /*********************** | |
3703 | * 5. Setup HW Constants | |
3704 | * ********************/ | |
3705 | /* Device-specific setup */ | |
46bc8d4b | 3706 | if (il3945_hw_set_hw_params(il)) { |
9406f797 | 3707 | IL_ERR("failed to set hw settings\n"); |
4bc85c13 WYG |
3708 | goto out_eeprom_free; |
3709 | } | |
3710 | ||
3711 | /*********************** | |
46bc8d4b | 3712 | * 6. Setup il |
4bc85c13 WYG |
3713 | * ********************/ |
3714 | ||
46bc8d4b | 3715 | err = il3945_init_drv(il); |
4bc85c13 | 3716 | if (err) { |
9406f797 | 3717 | IL_ERR("initializing driver failed\n"); |
4bc85c13 WYG |
3718 | goto out_unset_hw_params; |
3719 | } | |
3720 | ||
e7392364 | 3721 | IL_INFO("Detected Intel Wireless WiFi Link %s\n", il->cfg->name); |
4bc85c13 WYG |
3722 | |
3723 | /*********************** | |
3724 | * 7. Setup Services | |
3725 | * ********************/ | |
3726 | ||
46bc8d4b SG |
3727 | spin_lock_irqsave(&il->lock, flags); |
3728 | il_disable_interrupts(il); | |
3729 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 | 3730 | |
46bc8d4b | 3731 | pci_enable_msi(il->pci_dev); |
4bc85c13 | 3732 | |
e7392364 | 3733 | err = request_irq(il->pci_dev->irq, il_isr, IRQF_SHARED, DRV_NAME, il); |
4bc85c13 | 3734 | if (err) { |
9406f797 | 3735 | IL_ERR("Error allocating IRQ %d\n", il->pci_dev->irq); |
4bc85c13 WYG |
3736 | goto out_disable_msi; |
3737 | } | |
3738 | ||
e2ebc833 | 3739 | err = sysfs_create_group(&pdev->dev.kobj, &il3945_attribute_group); |
4bc85c13 | 3740 | if (err) { |
9406f797 | 3741 | IL_ERR("failed to create sysfs device attributes\n"); |
4bc85c13 WYG |
3742 | goto out_release_irq; |
3743 | } | |
3744 | ||
83007196 | 3745 | il_set_rxon_channel(il, &il->bands[IEEE80211_BAND_2GHZ].channels[5]); |
46bc8d4b | 3746 | il3945_setup_deferred_work(il); |
d0c72347 | 3747 | il3945_setup_handlers(il); |
46bc8d4b | 3748 | il_power_initialize(il); |
4bc85c13 WYG |
3749 | |
3750 | /********************************* | |
3751 | * 8. Setup and Register mac80211 | |
3752 | * *******************************/ | |
3753 | ||
46bc8d4b | 3754 | il_enable_interrupts(il); |
4bc85c13 | 3755 | |
46bc8d4b | 3756 | err = il3945_setup_mac(il); |
4bc85c13 | 3757 | if (err) |
e7392364 | 3758 | goto out_remove_sysfs; |
4bc85c13 | 3759 | |
46bc8d4b | 3760 | err = il_dbgfs_register(il, DRV_NAME); |
4bc85c13 | 3761 | if (err) |
e7392364 SG |
3762 | IL_ERR("failed to create debugfs files. Ignoring error: %d\n", |
3763 | err); | |
4bc85c13 WYG |
3764 | |
3765 | /* Start monitoring the killswitch */ | |
e7392364 | 3766 | queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, 2 * HZ); |
4bc85c13 WYG |
3767 | |
3768 | return 0; | |
3769 | ||
e7392364 | 3770 | out_remove_sysfs: |
46bc8d4b SG |
3771 | destroy_workqueue(il->workqueue); |
3772 | il->workqueue = NULL; | |
e2ebc833 | 3773 | sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group); |
e7392364 | 3774 | out_release_irq: |
46bc8d4b | 3775 | free_irq(il->pci_dev->irq, il); |
e7392364 | 3776 | out_disable_msi: |
46bc8d4b SG |
3777 | pci_disable_msi(il->pci_dev); |
3778 | il_free_geos(il); | |
3779 | il_free_channel_map(il); | |
e7392364 | 3780 | out_unset_hw_params: |
46bc8d4b | 3781 | il3945_unset_hw_params(il); |
e7392364 | 3782 | out_eeprom_free: |
46bc8d4b | 3783 | il_eeprom_free(il); |
e7392364 | 3784 | out_iounmap: |
a5f16137 | 3785 | iounmap(il->hw_base); |
e7392364 | 3786 | out_pci_release_regions: |
4bc85c13 | 3787 | pci_release_regions(pdev); |
e7392364 | 3788 | out_pci_disable_device: |
4bc85c13 WYG |
3789 | pci_set_drvdata(pdev, NULL); |
3790 | pci_disable_device(pdev); | |
e7392364 | 3791 | out_ieee80211_free_hw: |
46bc8d4b | 3792 | ieee80211_free_hw(il->hw); |
e7392364 | 3793 | out: |
4bc85c13 WYG |
3794 | return err; |
3795 | } | |
3796 | ||
e7392364 SG |
3797 | static void __devexit |
3798 | il3945_pci_remove(struct pci_dev *pdev) | |
4bc85c13 | 3799 | { |
46bc8d4b | 3800 | struct il_priv *il = pci_get_drvdata(pdev); |
4bc85c13 WYG |
3801 | unsigned long flags; |
3802 | ||
46bc8d4b | 3803 | if (!il) |
4bc85c13 WYG |
3804 | return; |
3805 | ||
58de00a4 | 3806 | D_INFO("*** UNLOAD DRIVER ***\n"); |
4bc85c13 | 3807 | |
46bc8d4b | 3808 | il_dbgfs_unregister(il); |
4bc85c13 | 3809 | |
a6766ccd | 3810 | set_bit(S_EXIT_PENDING, &il->status); |
4bc85c13 | 3811 | |
46bc8d4b | 3812 | il_leds_exit(il); |
4bc85c13 | 3813 | |
46bc8d4b SG |
3814 | if (il->mac80211_registered) { |
3815 | ieee80211_unregister_hw(il->hw); | |
3816 | il->mac80211_registered = 0; | |
4bc85c13 | 3817 | } else { |
46bc8d4b | 3818 | il3945_down(il); |
4bc85c13 WYG |
3819 | } |
3820 | ||
3821 | /* | |
3822 | * Make sure device is reset to low power before unloading driver. | |
e2ebc833 SG |
3823 | * This may be redundant with il_down(), but there are paths to |
3824 | * run il_down() without calling apm_ops.stop(), and there are | |
3825 | * paths to avoid running il_down() at all before leaving driver. | |
4bc85c13 WYG |
3826 | * This (inexpensive) call *makes sure* device is reset. |
3827 | */ | |
46bc8d4b | 3828 | il_apm_stop(il); |
4bc85c13 WYG |
3829 | |
3830 | /* make sure we flush any pending irq or | |
3831 | * tasklet for the driver | |
3832 | */ | |
46bc8d4b SG |
3833 | spin_lock_irqsave(&il->lock, flags); |
3834 | il_disable_interrupts(il); | |
3835 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 | 3836 | |
46bc8d4b | 3837 | il3945_synchronize_irq(il); |
4bc85c13 | 3838 | |
e2ebc833 | 3839 | sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group); |
4bc85c13 | 3840 | |
46bc8d4b | 3841 | cancel_delayed_work_sync(&il->_3945.rfkill_poll); |
4bc85c13 | 3842 | |
46bc8d4b | 3843 | il3945_dealloc_ucode_pci(il); |
4bc85c13 | 3844 | |
46bc8d4b SG |
3845 | if (il->rxq.bd) |
3846 | il3945_rx_queue_free(il, &il->rxq); | |
3847 | il3945_hw_txq_ctx_free(il); | |
4bc85c13 | 3848 | |
46bc8d4b | 3849 | il3945_unset_hw_params(il); |
4bc85c13 WYG |
3850 | |
3851 | /*netif_stop_queue(dev); */ | |
46bc8d4b | 3852 | flush_workqueue(il->workqueue); |
4bc85c13 | 3853 | |
e2ebc833 | 3854 | /* ieee80211_unregister_hw calls il3945_mac_stop, which flushes |
46bc8d4b | 3855 | * il->workqueue... so we can't take down the workqueue |
4bc85c13 | 3856 | * until now... */ |
46bc8d4b SG |
3857 | destroy_workqueue(il->workqueue); |
3858 | il->workqueue = NULL; | |
4bc85c13 | 3859 | |
46bc8d4b | 3860 | free_irq(pdev->irq, il); |
4bc85c13 WYG |
3861 | pci_disable_msi(pdev); |
3862 | ||
a5f16137 | 3863 | iounmap(il->hw_base); |
4bc85c13 WYG |
3864 | pci_release_regions(pdev); |
3865 | pci_disable_device(pdev); | |
3866 | pci_set_drvdata(pdev, NULL); | |
3867 | ||
46bc8d4b SG |
3868 | il_free_channel_map(il); |
3869 | il_free_geos(il); | |
3870 | kfree(il->scan_cmd); | |
3871 | if (il->beacon_skb) | |
3872 | dev_kfree_skb(il->beacon_skb); | |
4bc85c13 | 3873 | |
46bc8d4b | 3874 | ieee80211_free_hw(il->hw); |
4bc85c13 WYG |
3875 | } |
3876 | ||
4bc85c13 WYG |
3877 | /***************************************************************************** |
3878 | * | |
3879 | * driver and module entry point | |
3880 | * | |
3881 | *****************************************************************************/ | |
3882 | ||
e2ebc833 | 3883 | static struct pci_driver il3945_driver = { |
4bc85c13 | 3884 | .name = DRV_NAME, |
e2ebc833 SG |
3885 | .id_table = il3945_hw_card_ids, |
3886 | .probe = il3945_pci_probe, | |
3887 | .remove = __devexit_p(il3945_pci_remove), | |
3888 | .driver.pm = IL_LEGACY_PM_OPS, | |
4bc85c13 WYG |
3889 | }; |
3890 | ||
e7392364 SG |
3891 | static int __init |
3892 | il3945_init(void) | |
4bc85c13 WYG |
3893 | { |
3894 | ||
3895 | int ret; | |
3896 | pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); | |
3897 | pr_info(DRV_COPYRIGHT "\n"); | |
3898 | ||
e2ebc833 | 3899 | ret = il3945_rate_control_register(); |
4bc85c13 WYG |
3900 | if (ret) { |
3901 | pr_err("Unable to register rate control algorithm: %d\n", ret); | |
3902 | return ret; | |
3903 | } | |
3904 | ||
e2ebc833 | 3905 | ret = pci_register_driver(&il3945_driver); |
4bc85c13 WYG |
3906 | if (ret) { |
3907 | pr_err("Unable to initialize PCI module\n"); | |
3908 | goto error_register; | |
3909 | } | |
3910 | ||
3911 | return ret; | |
3912 | ||
3913 | error_register: | |
e2ebc833 | 3914 | il3945_rate_control_unregister(); |
4bc85c13 WYG |
3915 | return ret; |
3916 | } | |
3917 | ||
e7392364 SG |
3918 | static void __exit |
3919 | il3945_exit(void) | |
4bc85c13 | 3920 | { |
e2ebc833 SG |
3921 | pci_unregister_driver(&il3945_driver); |
3922 | il3945_rate_control_unregister(); | |
4bc85c13 WYG |
3923 | } |
3924 | ||
d3175167 | 3925 | MODULE_FIRMWARE(IL3945_MODULE_FIRMWARE(IL3945_UCODE_API_MAX)); |
4bc85c13 | 3926 | |
e2ebc833 | 3927 | module_param_named(antenna, il3945_mod_params.antenna, int, S_IRUGO); |
4bc85c13 | 3928 | MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); |
e2ebc833 | 3929 | module_param_named(swcrypto, il3945_mod_params.sw_crypto, int, S_IRUGO); |
e7392364 SG |
3930 | MODULE_PARM_DESC(swcrypto, "using software crypto (default 1 [software])"); |
3931 | module_param_named(disable_hw_scan, il3945_mod_params.disable_hw_scan, int, | |
3932 | S_IRUGO); | |
0263aa45 | 3933 | MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 1)"); |
d3175167 | 3934 | #ifdef CONFIG_IWLEGACY_DEBUG |
d2ddf621 | 3935 | module_param_named(debug, il_debug_level, uint, S_IRUGO | S_IWUSR); |
4bc85c13 WYG |
3936 | MODULE_PARM_DESC(debug, "debug output mask"); |
3937 | #endif | |
e2ebc833 | 3938 | module_param_named(fw_restart, il3945_mod_params.restart_fw, int, S_IRUGO); |
be663ab6 | 3939 | MODULE_PARM_DESC(fw_restart, "restart firmware in case of error"); |
4bc85c13 | 3940 | |
e2ebc833 SG |
3941 | module_exit(il3945_exit); |
3942 | module_init(il3945_init); |