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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; | |
7f42ace3 | 478 | u16 firstlen, secondlen; |
4bc85c13 WYG |
479 | u8 id; |
480 | u8 unicast; | |
481 | u8 sta_id; | |
482 | u8 tid = 0; | |
483 | __le16 fc; | |
484 | u8 wait_write_ptr = 0; | |
485 | unsigned long flags; | |
486 | ||
46bc8d4b SG |
487 | spin_lock_irqsave(&il->lock, flags); |
488 | if (il_is_rfkill(il)) { | |
58de00a4 | 489 | D_DROP("Dropping - RF KILL\n"); |
4bc85c13 WYG |
490 | goto drop_unlock; |
491 | } | |
492 | ||
e7392364 SG |
493 | if ((ieee80211_get_tx_rate(il->hw, info)->hw_value & 0xFF) == |
494 | IL_INVALID_RATE) { | |
9406f797 | 495 | IL_ERR("ERROR: No TX rate available.\n"); |
4bc85c13 WYG |
496 | goto drop_unlock; |
497 | } | |
498 | ||
499 | unicast = !is_multicast_ether_addr(hdr->addr1); | |
500 | id = 0; | |
501 | ||
502 | fc = hdr->frame_control; | |
503 | ||
d3175167 | 504 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 | 505 | if (ieee80211_is_auth(fc)) |
58de00a4 | 506 | D_TX("Sending AUTH frame\n"); |
4bc85c13 | 507 | else if (ieee80211_is_assoc_req(fc)) |
58de00a4 | 508 | D_TX("Sending ASSOC frame\n"); |
4bc85c13 | 509 | else if (ieee80211_is_reassoc_req(fc)) |
58de00a4 | 510 | D_TX("Sending REASSOC frame\n"); |
4bc85c13 WYG |
511 | #endif |
512 | ||
46bc8d4b | 513 | spin_unlock_irqrestore(&il->lock, flags); |
4bc85c13 WYG |
514 | |
515 | hdr_len = ieee80211_hdrlen(fc); | |
516 | ||
0c2c8852 | 517 | /* Find idx into station table for destination station */ |
36323f81 | 518 | sta_id = il_sta_id_or_broadcast(il, sta); |
e2ebc833 | 519 | if (sta_id == IL_INVALID_STATION) { |
e7392364 | 520 | D_DROP("Dropping - INVALID STATION: %pM\n", hdr->addr1); |
4bc85c13 WYG |
521 | goto drop; |
522 | } | |
523 | ||
58de00a4 | 524 | D_RATE("station Id %d\n", sta_id); |
4bc85c13 WYG |
525 | |
526 | if (ieee80211_is_data_qos(fc)) { | |
527 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
528 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
529 | if (unlikely(tid >= MAX_TID_COUNT)) | |
530 | goto drop; | |
531 | } | |
532 | ||
533 | /* Descriptor for chosen Tx queue */ | |
46bc8d4b | 534 | txq = &il->txq[txq_id]; |
4bc85c13 WYG |
535 | q = &txq->q; |
536 | ||
e2ebc833 | 537 | if ((il_queue_space(q) < q->high_mark)) |
4bc85c13 WYG |
538 | goto drop; |
539 | ||
46bc8d4b | 540 | spin_lock_irqsave(&il->lock, flags); |
4bc85c13 | 541 | |
0c2c8852 | 542 | idx = il_get_cmd_idx(q, q->write_ptr, 0); |
4bc85c13 | 543 | |
00ea99e1 | 544 | txq->skbs[q->write_ptr] = skb; |
4bc85c13 WYG |
545 | |
546 | /* Init first empty entry in queue's array of Tx/cmd buffers */ | |
547 | out_cmd = txq->cmd[idx]; | |
548 | out_meta = &txq->meta[idx]; | |
e2ebc833 | 549 | tx_cmd = (struct il3945_tx_cmd *)out_cmd->cmd.payload; |
4bc85c13 WYG |
550 | memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); |
551 | memset(tx_cmd, 0, sizeof(*tx_cmd)); | |
552 | ||
553 | /* | |
554 | * Set up the Tx-command (not MAC!) header. | |
0c2c8852 | 555 | * Store the chosen Tx queue and TFD idx within the sequence field; |
4bc85c13 WYG |
556 | * after Tx, uCode's Tx response will return this value so driver can |
557 | * locate the frame within the tx queue and do post-tx processing. | |
558 | */ | |
4d69c752 | 559 | out_cmd->hdr.cmd = C_TX; |
e7392364 SG |
560 | out_cmd->hdr.sequence = |
561 | cpu_to_le16((u16) | |
562 | (QUEUE_TO_SEQ(txq_id) | IDX_TO_SEQ(q->write_ptr))); | |
4bc85c13 WYG |
563 | |
564 | /* Copy MAC header from skb into command buffer */ | |
565 | memcpy(tx_cmd->hdr, hdr, hdr_len); | |
566 | ||
4bc85c13 | 567 | if (info->control.hw_key) |
46bc8d4b | 568 | il3945_build_tx_cmd_hwcrypto(il, info, out_cmd, skb, sta_id); |
4bc85c13 WYG |
569 | |
570 | /* TODO need this for burst mode later on */ | |
46bc8d4b | 571 | il3945_build_tx_cmd_basic(il, out_cmd, info, hdr, sta_id); |
4bc85c13 | 572 | |
81fb4613 | 573 | il3945_hw_build_tx_cmd_rate(il, out_cmd, info, hdr, sta_id); |
4bc85c13 WYG |
574 | |
575 | /* Total # bytes to be transmitted */ | |
bdb084b2 | 576 | tx_cmd->len = cpu_to_le16((u16) skb->len); |
4bc85c13 | 577 | |
4bc85c13 WYG |
578 | tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK; |
579 | tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK; | |
580 | ||
4bc85c13 WYG |
581 | /* |
582 | * Use the first empty entry in this queue's command buffer array | |
583 | * to contain the Tx command and MAC header concatenated together | |
584 | * (payload data will be in another buffer). | |
585 | * Size of this varies, due to varying MAC header length. | |
586 | * If end is not dword aligned, we'll have 2 extra bytes at the end | |
587 | * of the MAC header (device reads on dword boundaries). | |
588 | * We'll tell device about this padding later. | |
589 | */ | |
e7392364 SG |
590 | len = |
591 | sizeof(struct il3945_tx_cmd) + sizeof(struct il_cmd_header) + | |
592 | hdr_len; | |
7f42ace3 | 593 | firstlen = (len + 3) & ~3; |
4bc85c13 WYG |
594 | |
595 | /* Physical address of this Tx command's header (not MAC header!), | |
596 | * within command buffer array. */ | |
e7392364 | 597 | txcmd_phys = |
7f42ace3 SG |
598 | pci_map_single(il->pci_dev, &out_cmd->hdr, firstlen, |
599 | PCI_DMA_TODEVICE); | |
bdb084b2 SG |
600 | if (unlikely(pci_dma_mapping_error(il->pci_dev, txcmd_phys))) |
601 | goto drop_unlock; | |
4bc85c13 WYG |
602 | |
603 | /* Set up TFD's 2nd entry to point directly to remainder of skb, | |
604 | * if any (802.11 null frames have no payload). */ | |
7f42ace3 SG |
605 | secondlen = skb->len - hdr_len; |
606 | if (secondlen > 0) { | |
e7392364 | 607 | phys_addr = |
7f42ace3 | 608 | pci_map_single(il->pci_dev, skb->data + hdr_len, secondlen, |
e7392364 | 609 | PCI_DMA_TODEVICE); |
bdb084b2 SG |
610 | if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) |
611 | goto drop_unlock; | |
612 | } | |
613 | ||
614 | /* Add buffer containing Tx command and MAC(!) header to TFD's | |
615 | * first entry */ | |
7f42ace3 | 616 | il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, firstlen, 1, 0); |
bdb084b2 | 617 | dma_unmap_addr_set(out_meta, mapping, txcmd_phys); |
7f42ace3 SG |
618 | dma_unmap_len_set(out_meta, len, firstlen); |
619 | if (secondlen > 0) | |
620 | il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, secondlen, 0, | |
621 | U32_PAD(secondlen)); | |
bdb084b2 SG |
622 | |
623 | if (!ieee80211_has_morefrags(hdr->frame_control)) { | |
624 | txq->need_update = 1; | |
625 | } else { | |
626 | wait_write_ptr = 1; | |
627 | txq->need_update = 0; | |
4bc85c13 WYG |
628 | } |
629 | ||
bdb084b2 SG |
630 | il_update_stats(il, true, fc, skb->len); |
631 | ||
632 | D_TX("sequence nr = 0X%x\n", le16_to_cpu(out_cmd->hdr.sequence)); | |
633 | D_TX("tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags)); | |
634 | il_print_hex_dump(il, IL_DL_TX, tx_cmd, sizeof(*tx_cmd)); | |
635 | il_print_hex_dump(il, IL_DL_TX, (u8 *) tx_cmd->hdr, | |
636 | ieee80211_hdrlen(fc)); | |
637 | ||
0c2c8852 | 638 | /* Tell device the write idx *just past* this latest filled TFD */ |
e2ebc833 | 639 | q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd); |
46bc8d4b SG |
640 | il_txq_update_write_ptr(il, txq); |
641 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 | 642 | |
e7392364 | 643 | if (il_queue_space(q) < q->high_mark && il->mac80211_registered) { |
4bc85c13 | 644 | if (wait_write_ptr) { |
46bc8d4b | 645 | spin_lock_irqsave(&il->lock, flags); |
4bc85c13 | 646 | txq->need_update = 1; |
46bc8d4b SG |
647 | il_txq_update_write_ptr(il, txq); |
648 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 WYG |
649 | } |
650 | ||
46bc8d4b | 651 | il_stop_queue(il, txq); |
4bc85c13 WYG |
652 | } |
653 | ||
654 | return 0; | |
655 | ||
656 | drop_unlock: | |
46bc8d4b | 657 | spin_unlock_irqrestore(&il->lock, flags); |
4bc85c13 WYG |
658 | drop: |
659 | return -1; | |
660 | } | |
661 | ||
e7392364 SG |
662 | static int |
663 | il3945_get_measurement(struct il_priv *il, | |
664 | struct ieee80211_measurement_params *params, u8 type) | |
4bc85c13 | 665 | { |
e2ebc833 | 666 | struct il_spectrum_cmd spectrum; |
dcae1c64 | 667 | struct il_rx_pkt *pkt; |
e2ebc833 | 668 | struct il_host_cmd cmd = { |
4d69c752 | 669 | .id = C_SPECTRUM_MEASUREMENT, |
4bc85c13 WYG |
670 | .data = (void *)&spectrum, |
671 | .flags = CMD_WANT_SKB, | |
672 | }; | |
673 | u32 add_time = le64_to_cpu(params->start_time); | |
674 | int rc; | |
675 | int spectrum_resp_status; | |
676 | int duration = le16_to_cpu(params->duration); | |
4bc85c13 | 677 | |
7c2cde2e | 678 | if (il_is_associated(il)) |
e7392364 SG |
679 | add_time = |
680 | il_usecs_to_beacons(il, | |
681 | le64_to_cpu(params->start_time) - | |
682 | il->_3945.last_tsf, | |
c8b03958 | 683 | le16_to_cpu(il->timing.beacon_interval)); |
4bc85c13 WYG |
684 | |
685 | memset(&spectrum, 0, sizeof(spectrum)); | |
686 | ||
687 | spectrum.channel_count = cpu_to_le16(1); | |
688 | spectrum.flags = | |
689 | RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK; | |
690 | spectrum.filter_flags = MEASUREMENT_FILTER_FLAG; | |
691 | cmd.len = sizeof(spectrum); | |
692 | spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len)); | |
693 | ||
7c2cde2e | 694 | if (il_is_associated(il)) |
4bc85c13 | 695 | spectrum.start_time = |
e7392364 | 696 | il_add_beacon_time(il, il->_3945.last_beacon_time, add_time, |
c8b03958 | 697 | le16_to_cpu(il->timing.beacon_interval)); |
4bc85c13 WYG |
698 | else |
699 | spectrum.start_time = 0; | |
700 | ||
701 | spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT); | |
702 | spectrum.channels[0].channel = params->channel; | |
703 | spectrum.channels[0].type = type; | |
c8b03958 | 704 | if (il->active.flags & RXON_FLG_BAND_24G_MSK) |
e7392364 SG |
705 | spectrum.flags |= |
706 | RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | | |
707 | RXON_FLG_TGG_PROTECT_MSK; | |
4bc85c13 | 708 | |
46bc8d4b | 709 | rc = il_send_cmd_sync(il, &cmd); |
4bc85c13 WYG |
710 | if (rc) |
711 | return rc; | |
712 | ||
dcae1c64 | 713 | pkt = (struct il_rx_pkt *)cmd.reply_page; |
e2ebc833 | 714 | if (pkt->hdr.flags & IL_CMD_FAILED_MSK) { |
4d69c752 | 715 | IL_ERR("Bad return from N_RX_ON_ASSOC command\n"); |
4bc85c13 WYG |
716 | rc = -EIO; |
717 | } | |
718 | ||
719 | spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status); | |
720 | switch (spectrum_resp_status) { | |
721 | case 0: /* Command will be handled */ | |
722 | if (pkt->u.spectrum.id != 0xff) { | |
58de00a4 | 723 | D_INFO("Replaced existing measurement: %d\n", |
e7392364 | 724 | pkt->u.spectrum.id); |
46bc8d4b | 725 | il->measurement_status &= ~MEASUREMENT_READY; |
4bc85c13 | 726 | } |
46bc8d4b | 727 | il->measurement_status |= MEASUREMENT_ACTIVE; |
4bc85c13 WYG |
728 | rc = 0; |
729 | break; | |
730 | ||
731 | case 1: /* Command will not be handled */ | |
732 | rc = -EAGAIN; | |
733 | break; | |
734 | } | |
735 | ||
46bc8d4b | 736 | il_free_pages(il, cmd.reply_page); |
4bc85c13 WYG |
737 | |
738 | return rc; | |
739 | } | |
740 | ||
e7392364 SG |
741 | static void |
742 | il3945_hdl_alive(struct il_priv *il, struct il_rx_buf *rxb) | |
4bc85c13 | 743 | { |
dcae1c64 | 744 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e2ebc833 | 745 | struct il_alive_resp *palive; |
4bc85c13 WYG |
746 | struct delayed_work *pwork; |
747 | ||
748 | palive = &pkt->u.alive_frame; | |
749 | ||
e7392364 SG |
750 | D_INFO("Alive ucode status 0x%08X revision " "0x%01X 0x%01X\n", |
751 | palive->is_valid, palive->ver_type, palive->ver_subtype); | |
4bc85c13 WYG |
752 | |
753 | if (palive->ver_subtype == INITIALIZE_SUBTYPE) { | |
58de00a4 | 754 | D_INFO("Initialization Alive received.\n"); |
46bc8d4b | 755 | memcpy(&il->card_alive_init, &pkt->u.alive_frame, |
e2ebc833 | 756 | sizeof(struct il_alive_resp)); |
46bc8d4b | 757 | pwork = &il->init_alive_start; |
4bc85c13 | 758 | } else { |
58de00a4 | 759 | D_INFO("Runtime Alive received.\n"); |
46bc8d4b | 760 | memcpy(&il->card_alive, &pkt->u.alive_frame, |
e2ebc833 | 761 | sizeof(struct il_alive_resp)); |
46bc8d4b SG |
762 | pwork = &il->alive_start; |
763 | il3945_disable_events(il); | |
4bc85c13 WYG |
764 | } |
765 | ||
766 | /* We delay the ALIVE response by 5ms to | |
767 | * give the HW RF Kill time to activate... */ | |
768 | if (palive->is_valid == UCODE_VALID_OK) | |
e7392364 | 769 | queue_delayed_work(il->workqueue, pwork, msecs_to_jiffies(5)); |
4bc85c13 | 770 | else |
9406f797 | 771 | IL_WARN("uCode did not respond OK.\n"); |
4bc85c13 WYG |
772 | } |
773 | ||
e7392364 SG |
774 | static void |
775 | il3945_hdl_add_sta(struct il_priv *il, struct il_rx_buf *rxb) | |
4bc85c13 | 776 | { |
d3175167 | 777 | #ifdef CONFIG_IWLEGACY_DEBUG |
dcae1c64 | 778 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
4bc85c13 WYG |
779 | #endif |
780 | ||
4d69c752 | 781 | D_RX("Received C_ADD_STA: 0x%02X\n", pkt->u.status); |
4bc85c13 WYG |
782 | } |
783 | ||
e7392364 SG |
784 | static void |
785 | il3945_hdl_beacon(struct il_priv *il, struct il_rx_buf *rxb) | |
4bc85c13 | 786 | { |
dcae1c64 | 787 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
e2ebc833 | 788 | struct il3945_beacon_notif *beacon = &(pkt->u.beacon_status); |
d3175167 | 789 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
790 | u8 rate = beacon->beacon_notify_hdr.rate; |
791 | ||
e7392364 SG |
792 | D_RX("beacon status %x retries %d iss %d " "tsf %d %d rate %d\n", |
793 | le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK, | |
794 | beacon->beacon_notify_hdr.failure_frame, | |
795 | le32_to_cpu(beacon->ibss_mgr_status), | |
796 | le32_to_cpu(beacon->high_tsf), le32_to_cpu(beacon->low_tsf), rate); | |
4bc85c13 WYG |
797 | #endif |
798 | ||
46bc8d4b | 799 | il->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); |
4bc85c13 | 800 | |
4bc85c13 WYG |
801 | } |
802 | ||
803 | /* Handle notification from uCode that card's power state is changing | |
804 | * due to software, hardware, or critical temperature RFKILL */ | |
e7392364 SG |
805 | static void |
806 | il3945_hdl_card_state(struct il_priv *il, struct il_rx_buf *rxb) | |
4bc85c13 | 807 | { |
dcae1c64 | 808 | struct il_rx_pkt *pkt = rxb_addr(rxb); |
4bc85c13 | 809 | u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags); |
46bc8d4b | 810 | unsigned long status = il->status; |
4bc85c13 | 811 | |
9406f797 | 812 | IL_WARN("Card state received: HW:%s SW:%s\n", |
e7392364 SG |
813 | (flags & HW_CARD_DISABLED) ? "Kill" : "On", |
814 | (flags & SW_CARD_DISABLED) ? "Kill" : "On"); | |
4bc85c13 | 815 | |
e7392364 | 816 | _il_wr(il, CSR_UCODE_DRV_GP1_SET, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
4bc85c13 WYG |
817 | |
818 | if (flags & HW_CARD_DISABLED) | |
bc269a8e | 819 | set_bit(S_RFKILL, &il->status); |
4bc85c13 | 820 | else |
bc269a8e | 821 | clear_bit(S_RFKILL, &il->status); |
4bc85c13 | 822 | |
46bc8d4b | 823 | il_scan_cancel(il); |
4bc85c13 | 824 | |
bc269a8e SG |
825 | if ((test_bit(S_RFKILL, &status) != |
826 | test_bit(S_RFKILL, &il->status))) | |
46bc8d4b | 827 | wiphy_rfkill_set_hw_state(il->hw->wiphy, |
bc269a8e | 828 | test_bit(S_RFKILL, &il->status)); |
4bc85c13 | 829 | else |
46bc8d4b | 830 | wake_up(&il->wait_command_queue); |
4bc85c13 WYG |
831 | } |
832 | ||
833 | /** | |
d0c72347 | 834 | * il3945_setup_handlers - Initialize Rx handler callbacks |
4bc85c13 WYG |
835 | * |
836 | * Setup the RX handlers for each of the reply types sent from the uCode | |
837 | * to the host. | |
838 | * | |
839 | * This function chains into the hardware specific files for them to setup | |
840 | * any hardware specific handlers as well. | |
841 | */ | |
e7392364 SG |
842 | static void |
843 | il3945_setup_handlers(struct il_priv *il) | |
4bc85c13 | 844 | { |
6e9848b4 SG |
845 | il->handlers[N_ALIVE] = il3945_hdl_alive; |
846 | il->handlers[C_ADD_STA] = il3945_hdl_add_sta; | |
847 | il->handlers[N_ERROR] = il_hdl_error; | |
d2dfb33e | 848 | il->handlers[N_CHANNEL_SWITCH] = il_hdl_csa; |
e7392364 | 849 | il->handlers[N_SPECTRUM_MEASUREMENT] = il_hdl_spectrum_measurement; |
d2dfb33e | 850 | il->handlers[N_PM_SLEEP] = il_hdl_pm_sleep; |
e7392364 | 851 | il->handlers[N_PM_DEBUG_STATS] = il_hdl_pm_debug_stats; |
d2dfb33e | 852 | il->handlers[N_BEACON] = il3945_hdl_beacon; |
4bc85c13 WYG |
853 | |
854 | /* | |
855 | * The same handler is used for both the REPLY to a discrete | |
ebf0d90d SG |
856 | * stats request from the host as well as for the periodic |
857 | * stats notifications (after received beacons) from the uCode. | |
4bc85c13 | 858 | */ |
d2dfb33e SG |
859 | il->handlers[C_STATS] = il3945_hdl_c_stats; |
860 | il->handlers[N_STATS] = il3945_hdl_stats; | |
4bc85c13 | 861 | |
46bc8d4b | 862 | il_setup_rx_scan_handlers(il); |
d2dfb33e | 863 | il->handlers[N_CARD_STATE] = il3945_hdl_card_state; |
4bc85c13 WYG |
864 | |
865 | /* Set up hardware specific Rx handlers */ | |
d0c72347 | 866 | il3945_hw_handler_setup(il); |
4bc85c13 WYG |
867 | } |
868 | ||
869 | /************************** RX-FUNCTIONS ****************************/ | |
870 | /* | |
871 | * Rx theory of operation | |
872 | * | |
873 | * The host allocates 32 DMA target addresses and passes the host address | |
3b98c7f4 | 874 | * to the firmware at register IL_RFDS_TBL_LOWER + N * RFD_SIZE where N is |
4bc85c13 WYG |
875 | * 0 to 31 |
876 | * | |
877 | * Rx Queue Indexes | |
0c2c8852 | 878 | * The host/firmware share two idx registers for managing the Rx buffers. |
4bc85c13 | 879 | * |
0c2c8852 | 880 | * The READ idx maps to the first position that the firmware may be writing |
4bc85c13 WYG |
881 | * to -- the driver can read up to (but not including) this position and get |
882 | * good data. | |
0c2c8852 | 883 | * The READ idx is managed by the firmware once the card is enabled. |
4bc85c13 | 884 | * |
0c2c8852 | 885 | * The WRITE idx maps to the last position the driver has read from -- the |
4bc85c13 WYG |
886 | * position preceding WRITE is the last slot the firmware can place a packet. |
887 | * | |
888 | * The queue is empty (no good data) if WRITE = READ - 1, and is full if | |
889 | * WRITE = READ. | |
890 | * | |
891 | * During initialization, the host sets up the READ queue position to the first | |
2d09b062 | 892 | * IDX position, and WRITE to the last (READ - 1 wrapped) |
4bc85c13 | 893 | * |
0c2c8852 SG |
894 | * When the firmware places a packet in a buffer, it will advance the READ idx |
895 | * and fire the RX interrupt. The driver can then query the READ idx and | |
896 | * process as many packets as possible, moving the WRITE idx forward as it | |
4bc85c13 WYG |
897 | * resets the Rx queue buffers with new memory. |
898 | * | |
899 | * The management in the driver is as follows: | |
900 | * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When | |
901 | * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled | |
902 | * to replenish the iwl->rxq->rx_free. | |
e2ebc833 | 903 | * + In il3945_rx_replenish (scheduled) if 'processed' != 'read' then the |
2d09b062 | 904 | * iwl->rxq is replenished and the READ IDX is updated (updating the |
0c2c8852 | 905 | * 'processed' and 'read' driver idxes as well) |
4bc85c13 | 906 | * + A received packet is processed and handed to the kernel network stack, |
0c2c8852 | 907 | * detached from the iwl->rxq. The driver 'processed' idx is updated. |
4bc85c13 WYG |
908 | * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free |
909 | * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ | |
2d09b062 | 910 | * IDX is not incremented and iwl->status(RX_STALLED) is set. If there |
4bc85c13 WYG |
911 | * were enough free buffers and RX_STALLED is set it is cleared. |
912 | * | |
913 | * | |
914 | * Driver sequence: | |
915 | * | |
e2ebc833 SG |
916 | * il3945_rx_replenish() Replenishes rx_free list from rx_used, and calls |
917 | * il3945_rx_queue_restock | |
918 | * il3945_rx_queue_restock() Moves available buffers from rx_free into Rx | |
4bc85c13 | 919 | * queue, updates firmware pointers, and updates |
0c2c8852 | 920 | * the WRITE idx. If insufficient rx_free buffers |
e2ebc833 | 921 | * are available, schedules il3945_rx_replenish |
4bc85c13 WYG |
922 | * |
923 | * -- enable interrupts -- | |
b73bb5f1 | 924 | * ISR - il3945_rx() Detach il_rx_bufs from pool up to the |
2d09b062 | 925 | * READ IDX, detaching the SKB from the pool. |
4bc85c13 | 926 | * Moves the packet buffer from queue to rx_used. |
e2ebc833 | 927 | * Calls il3945_rx_queue_restock to refill any empty |
4bc85c13 WYG |
928 | * slots. |
929 | * ... | |
930 | * | |
931 | */ | |
932 | ||
933 | /** | |
e2ebc833 | 934 | * il3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr |
4bc85c13 | 935 | */ |
e7392364 SG |
936 | static inline __le32 |
937 | il3945_dma_addr2rbd_ptr(struct il_priv *il, dma_addr_t dma_addr) | |
4bc85c13 | 938 | { |
e7392364 | 939 | return cpu_to_le32((u32) dma_addr); |
4bc85c13 WYG |
940 | } |
941 | ||
942 | /** | |
e2ebc833 | 943 | * il3945_rx_queue_restock - refill RX queue from pre-allocated pool |
4bc85c13 WYG |
944 | * |
945 | * If there are slots in the RX queue that need to be restocked, | |
946 | * and we have free pre-allocated buffers, fill the ranks as much | |
947 | * as we can, pulling from rx_free. | |
948 | * | |
0c2c8852 | 949 | * This moves the 'write' idx forward to catch up with 'processed', and |
4bc85c13 WYG |
950 | * also updates the memory address in the firmware to reference the new |
951 | * target buffer. | |
952 | */ | |
e7392364 SG |
953 | static void |
954 | il3945_rx_queue_restock(struct il_priv *il) | |
4bc85c13 | 955 | { |
46bc8d4b | 956 | struct il_rx_queue *rxq = &il->rxq; |
4bc85c13 | 957 | struct list_head *element; |
b73bb5f1 | 958 | struct il_rx_buf *rxb; |
4bc85c13 WYG |
959 | unsigned long flags; |
960 | int write; | |
961 | ||
962 | spin_lock_irqsave(&rxq->lock, flags); | |
963 | write = rxq->write & ~0x7; | |
232913b5 | 964 | while (il_rx_queue_space(rxq) > 0 && rxq->free_count) { |
4bc85c13 WYG |
965 | /* Get next free Rx buffer, remove from free list */ |
966 | element = rxq->rx_free.next; | |
b73bb5f1 | 967 | rxb = list_entry(element, struct il_rx_buf, list); |
4bc85c13 WYG |
968 | list_del(element); |
969 | ||
970 | /* Point to Rx buffer via next RBD in circular buffer */ | |
e7392364 SG |
971 | rxq->bd[rxq->write] = |
972 | il3945_dma_addr2rbd_ptr(il, rxb->page_dma); | |
4bc85c13 WYG |
973 | rxq->queue[rxq->write] = rxb; |
974 | rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; | |
975 | rxq->free_count--; | |
976 | } | |
977 | spin_unlock_irqrestore(&rxq->lock, flags); | |
978 | /* If the pre-allocated buffer pool is dropping low, schedule to | |
979 | * refill it */ | |
980 | if (rxq->free_count <= RX_LOW_WATERMARK) | |
46bc8d4b | 981 | queue_work(il->workqueue, &il->rx_replenish); |
4bc85c13 | 982 | |
4bc85c13 WYG |
983 | /* If we've added more space for the firmware to place data, tell it. |
984 | * Increment device's write pointer in multiples of 8. */ | |
232913b5 SG |
985 | if (rxq->write_actual != (rxq->write & ~0x7) || |
986 | abs(rxq->write - rxq->read) > 7) { | |
4bc85c13 WYG |
987 | spin_lock_irqsave(&rxq->lock, flags); |
988 | rxq->need_update = 1; | |
989 | spin_unlock_irqrestore(&rxq->lock, flags); | |
46bc8d4b | 990 | il_rx_queue_update_write_ptr(il, rxq); |
4bc85c13 WYG |
991 | } |
992 | } | |
993 | ||
994 | /** | |
e2ebc833 | 995 | * il3945_rx_replenish - Move all used packet from rx_used to rx_free |
4bc85c13 WYG |
996 | * |
997 | * When moving to rx_free an SKB is allocated for the slot. | |
998 | * | |
e2ebc833 | 999 | * Also restock the Rx queue via il3945_rx_queue_restock. |
4bc85c13 WYG |
1000 | * This is called as a scheduled work item (except for during initialization) |
1001 | */ | |
e7392364 SG |
1002 | static void |
1003 | il3945_rx_allocate(struct il_priv *il, gfp_t priority) | |
4bc85c13 | 1004 | { |
46bc8d4b | 1005 | struct il_rx_queue *rxq = &il->rxq; |
4bc85c13 | 1006 | struct list_head *element; |
b73bb5f1 | 1007 | struct il_rx_buf *rxb; |
4bc85c13 | 1008 | struct page *page; |
96ebbe8d | 1009 | dma_addr_t page_dma; |
4bc85c13 WYG |
1010 | unsigned long flags; |
1011 | gfp_t gfp_mask = priority; | |
1012 | ||
1013 | while (1) { | |
1014 | spin_lock_irqsave(&rxq->lock, flags); | |
4bc85c13 WYG |
1015 | if (list_empty(&rxq->rx_used)) { |
1016 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1017 | return; | |
1018 | } | |
1019 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1020 | ||
1021 | if (rxq->free_count > RX_LOW_WATERMARK) | |
1022 | gfp_mask |= __GFP_NOWARN; | |
1023 | ||
46bc8d4b | 1024 | if (il->hw_params.rx_page_order > 0) |
4bc85c13 WYG |
1025 | gfp_mask |= __GFP_COMP; |
1026 | ||
1027 | /* Alloc a new receive buffer */ | |
46bc8d4b | 1028 | page = alloc_pages(gfp_mask, il->hw_params.rx_page_order); |
4bc85c13 WYG |
1029 | if (!page) { |
1030 | if (net_ratelimit()) | |
58de00a4 | 1031 | D_INFO("Failed to allocate SKB buffer.\n"); |
232913b5 | 1032 | if (rxq->free_count <= RX_LOW_WATERMARK && |
4bc85c13 | 1033 | net_ratelimit()) |
1722f8e1 SG |
1034 | IL_ERR("Failed to allocate SKB buffer with %0x." |
1035 | "Only %u free buffers remaining.\n", | |
1036 | priority, rxq->free_count); | |
4bc85c13 WYG |
1037 | /* We don't reschedule replenish work here -- we will |
1038 | * call the restock method and if it still needs | |
1039 | * more buffers it will schedule replenish */ | |
1040 | break; | |
1041 | } | |
1042 | ||
96ebbe8d SG |
1043 | /* Get physical address of RB/SKB */ |
1044 | page_dma = | |
1045 | pci_map_page(il->pci_dev, page, 0, | |
1046 | PAGE_SIZE << il->hw_params.rx_page_order, | |
1047 | PCI_DMA_FROMDEVICE); | |
1048 | ||
1049 | if (unlikely(pci_dma_mapping_error(il->pci_dev, page_dma))) { | |
1050 | __free_pages(page, il->hw_params.rx_page_order); | |
1051 | break; | |
1052 | } | |
1053 | ||
4bc85c13 | 1054 | spin_lock_irqsave(&rxq->lock, flags); |
96ebbe8d | 1055 | |
4bc85c13 WYG |
1056 | if (list_empty(&rxq->rx_used)) { |
1057 | spin_unlock_irqrestore(&rxq->lock, flags); | |
96ebbe8d SG |
1058 | pci_unmap_page(il->pci_dev, page_dma, |
1059 | PAGE_SIZE << il->hw_params.rx_page_order, | |
1060 | PCI_DMA_FROMDEVICE); | |
46bc8d4b | 1061 | __free_pages(page, il->hw_params.rx_page_order); |
4bc85c13 WYG |
1062 | return; |
1063 | } | |
96ebbe8d | 1064 | |
4bc85c13 | 1065 | element = rxq->rx_used.next; |
b73bb5f1 | 1066 | rxb = list_entry(element, struct il_rx_buf, list); |
4bc85c13 | 1067 | list_del(element); |
4bc85c13 WYG |
1068 | |
1069 | rxb->page = page; | |
96ebbe8d | 1070 | rxb->page_dma = page_dma; |
4bc85c13 WYG |
1071 | list_add_tail(&rxb->list, &rxq->rx_free); |
1072 | rxq->free_count++; | |
46bc8d4b | 1073 | il->alloc_rxb_page++; |
4bc85c13 WYG |
1074 | |
1075 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1076 | } | |
1077 | } | |
1078 | ||
e7392364 SG |
1079 | void |
1080 | il3945_rx_queue_reset(struct il_priv *il, struct il_rx_queue *rxq) | |
4bc85c13 WYG |
1081 | { |
1082 | unsigned long flags; | |
1083 | int i; | |
1084 | spin_lock_irqsave(&rxq->lock, flags); | |
1085 | INIT_LIST_HEAD(&rxq->rx_free); | |
1086 | INIT_LIST_HEAD(&rxq->rx_used); | |
1087 | /* Fill the rx_used queue with _all_ of the Rx buffers */ | |
1088 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { | |
1089 | /* In the reset function, these buffers may have been allocated | |
1090 | * to an SKB, so we need to unmap and free potential storage */ | |
1091 | if (rxq->pool[i].page != NULL) { | |
46bc8d4b | 1092 | pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, |
e7392364 SG |
1093 | PAGE_SIZE << il->hw_params.rx_page_order, |
1094 | PCI_DMA_FROMDEVICE); | |
46bc8d4b | 1095 | __il_free_pages(il, rxq->pool[i].page); |
4bc85c13 WYG |
1096 | rxq->pool[i].page = NULL; |
1097 | } | |
1098 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
1099 | } | |
1100 | ||
1101 | /* Set us so that we have processed and used all buffers, but have | |
1102 | * not restocked the Rx queue with fresh buffers */ | |
1103 | rxq->read = rxq->write = 0; | |
1104 | rxq->write_actual = 0; | |
1105 | rxq->free_count = 0; | |
1106 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1107 | } | |
1108 | ||
e7392364 SG |
1109 | void |
1110 | il3945_rx_replenish(void *data) | |
4bc85c13 | 1111 | { |
46bc8d4b | 1112 | struct il_priv *il = data; |
4bc85c13 WYG |
1113 | unsigned long flags; |
1114 | ||
46bc8d4b | 1115 | il3945_rx_allocate(il, GFP_KERNEL); |
4bc85c13 | 1116 | |
46bc8d4b SG |
1117 | spin_lock_irqsave(&il->lock, flags); |
1118 | il3945_rx_queue_restock(il); | |
1119 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 WYG |
1120 | } |
1121 | ||
e7392364 SG |
1122 | static void |
1123 | il3945_rx_replenish_now(struct il_priv *il) | |
4bc85c13 | 1124 | { |
46bc8d4b | 1125 | il3945_rx_allocate(il, GFP_ATOMIC); |
4bc85c13 | 1126 | |
46bc8d4b | 1127 | il3945_rx_queue_restock(il); |
4bc85c13 WYG |
1128 | } |
1129 | ||
4bc85c13 WYG |
1130 | /* Assumes that the skb field of the buffers in 'pool' is kept accurate. |
1131 | * If an SKB has been detached, the POOL needs to have its SKB set to NULL | |
1132 | * This free routine walks the list of POOL entries and if SKB is set to | |
1133 | * non NULL it is unmapped and freed | |
1134 | */ | |
e7392364 SG |
1135 | static void |
1136 | il3945_rx_queue_free(struct il_priv *il, struct il_rx_queue *rxq) | |
4bc85c13 WYG |
1137 | { |
1138 | int i; | |
1139 | for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { | |
1140 | if (rxq->pool[i].page != NULL) { | |
46bc8d4b | 1141 | pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma, |
e7392364 SG |
1142 | PAGE_SIZE << il->hw_params.rx_page_order, |
1143 | PCI_DMA_FROMDEVICE); | |
46bc8d4b | 1144 | __il_free_pages(il, rxq->pool[i].page); |
4bc85c13 WYG |
1145 | rxq->pool[i].page = NULL; |
1146 | } | |
1147 | } | |
1148 | ||
46bc8d4b | 1149 | dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, |
4bc85c13 | 1150 | rxq->bd_dma); |
46bc8d4b | 1151 | dma_free_coherent(&il->pci_dev->dev, sizeof(struct il_rb_status), |
4bc85c13 WYG |
1152 | rxq->rb_stts, rxq->rb_stts_dma); |
1153 | rxq->bd = NULL; | |
e7392364 | 1154 | rxq->rb_stts = NULL; |
4bc85c13 WYG |
1155 | } |
1156 | ||
4bc85c13 WYG |
1157 | /* Convert linear signal-to-noise ratio into dB */ |
1158 | static u8 ratio2dB[100] = { | |
1159 | /* 0 1 2 3 4 5 6 7 8 9 */ | |
e7392364 SG |
1160 | 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */ |
1161 | 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */ | |
1162 | 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */ | |
1163 | 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */ | |
1164 | 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */ | |
1165 | 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */ | |
1166 | 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */ | |
1167 | 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */ | |
1168 | 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */ | |
1169 | 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */ | |
4bc85c13 WYG |
1170 | }; |
1171 | ||
1172 | /* Calculates a relative dB value from a ratio of linear | |
1173 | * (i.e. not dB) signal levels. | |
1174 | * Conversion assumes that levels are voltages (20*log), not powers (10*log). */ | |
e7392364 SG |
1175 | int |
1176 | il3945_calc_db_from_ratio(int sig_ratio) | |
4bc85c13 WYG |
1177 | { |
1178 | /* 1000:1 or higher just report as 60 dB */ | |
1179 | if (sig_ratio >= 1000) | |
1180 | return 60; | |
1181 | ||
1182 | /* 100:1 or higher, divide by 10 and use table, | |
1183 | * add 20 dB to make up for divide by 10 */ | |
1184 | if (sig_ratio >= 100) | |
e7392364 | 1185 | return 20 + (int)ratio2dB[sig_ratio / 10]; |
4bc85c13 WYG |
1186 | |
1187 | /* We shouldn't see this */ | |
1188 | if (sig_ratio < 1) | |
1189 | return 0; | |
1190 | ||
1191 | /* Use table for ratios 1:1 - 99:1 */ | |
1192 | return (int)ratio2dB[sig_ratio]; | |
1193 | } | |
1194 | ||
1195 | /** | |
e2ebc833 | 1196 | * il3945_rx_handle - Main entry function for receiving responses from uCode |
4bc85c13 | 1197 | * |
d0c72347 | 1198 | * Uses the il->handlers callback function array to invoke |
4bc85c13 WYG |
1199 | * the appropriate handlers, including command responses, |
1200 | * frame-received notifications, and other notifications. | |
1201 | */ | |
e7392364 SG |
1202 | static void |
1203 | il3945_rx_handle(struct il_priv *il) | |
4bc85c13 | 1204 | { |
b73bb5f1 | 1205 | struct il_rx_buf *rxb; |
dcae1c64 | 1206 | struct il_rx_pkt *pkt; |
46bc8d4b | 1207 | struct il_rx_queue *rxq = &il->rxq; |
4bc85c13 WYG |
1208 | u32 r, i; |
1209 | int reclaim; | |
1210 | unsigned long flags; | |
1211 | u8 fill_rx = 0; | |
1212 | u32 count = 8; | |
1213 | int total_empty = 0; | |
1214 | ||
0c2c8852 | 1215 | /* uCode's read idx (stored in shared DRAM) indicates the last Rx |
4bc85c13 | 1216 | * buffer that the driver may process (last buffer filled by ucode). */ |
e7392364 | 1217 | r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; |
4bc85c13 WYG |
1218 | i = rxq->read; |
1219 | ||
1220 | /* calculate total frames need to be restock after handling RX */ | |
1221 | total_empty = r - rxq->write_actual; | |
1222 | if (total_empty < 0) | |
1223 | total_empty += RX_QUEUE_SIZE; | |
1224 | ||
1225 | if (total_empty > (RX_QUEUE_SIZE / 2)) | |
1226 | fill_rx = 1; | |
1227 | /* Rx interrupt, but nothing sent from uCode */ | |
1228 | if (i == r) | |
58de00a4 | 1229 | D_RX("r = %d, i = %d\n", r, i); |
4bc85c13 WYG |
1230 | |
1231 | while (i != r) { | |
1232 | int len; | |
1233 | ||
1234 | rxb = rxq->queue[i]; | |
1235 | ||
1236 | /* If an RXB doesn't have a Rx queue slot associated with it, | |
1237 | * then a bug has been introduced in the queue refilling | |
1238 | * routines -- catch it here */ | |
1239 | BUG_ON(rxb == NULL); | |
1240 | ||
1241 | rxq->queue[i] = NULL; | |
1242 | ||
46bc8d4b SG |
1243 | pci_unmap_page(il->pci_dev, rxb->page_dma, |
1244 | PAGE_SIZE << il->hw_params.rx_page_order, | |
4bc85c13 WYG |
1245 | PCI_DMA_FROMDEVICE); |
1246 | pkt = rxb_addr(rxb); | |
1247 | ||
e94a4099 | 1248 | len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK; |
e7392364 | 1249 | len += sizeof(u32); /* account for status word */ |
4bc85c13 | 1250 | |
8e67427a | 1251 | reclaim = il_need_reclaim(il, pkt); |
4bc85c13 WYG |
1252 | |
1253 | /* Based on type of command response or notification, | |
1254 | * handle those that need handling via function in | |
d0c72347 SG |
1255 | * handlers table. See il3945_setup_handlers() */ |
1256 | if (il->handlers[pkt->hdr.cmd]) { | |
58de00a4 | 1257 | D_RX("r = %d, i = %d, %s, 0x%02x\n", r, i, |
e7392364 | 1258 | il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); |
d0c72347 SG |
1259 | il->isr_stats.handlers[pkt->hdr.cmd]++; |
1260 | il->handlers[pkt->hdr.cmd] (il, rxb); | |
4bc85c13 WYG |
1261 | } else { |
1262 | /* No handling needed */ | |
e7392364 SG |
1263 | D_RX("r %d i %d No handler needed for %s, 0x%02x\n", r, |
1264 | i, il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd); | |
4bc85c13 WYG |
1265 | } |
1266 | ||
1267 | /* | |
1268 | * XXX: After here, we should always check rxb->page | |
1269 | * against NULL before touching it or its virtual | |
d0c72347 | 1270 | * memory (pkt). Because some handler might have |
4bc85c13 WYG |
1271 | * already taken or freed the pages. |
1272 | */ | |
1273 | ||
1274 | if (reclaim) { | |
1275 | /* Invoke any callbacks, transfer the buffer to caller, | |
e2ebc833 | 1276 | * and fire off the (possibly) blocking il_send_cmd() |
4bc85c13 WYG |
1277 | * as we reclaim the driver command queue */ |
1278 | if (rxb->page) | |
46bc8d4b | 1279 | il_tx_cmd_complete(il, rxb); |
4bc85c13 | 1280 | else |
9406f797 | 1281 | IL_WARN("Claim null rxb?\n"); |
4bc85c13 WYG |
1282 | } |
1283 | ||
1284 | /* Reuse the page if possible. For notification packets and | |
1285 | * SKBs that fail to Rx correctly, add them back into the | |
1286 | * rx_free list for reuse later. */ | |
1287 | spin_lock_irqsave(&rxq->lock, flags); | |
1288 | if (rxb->page != NULL) { | |
e7392364 SG |
1289 | rxb->page_dma = |
1290 | pci_map_page(il->pci_dev, rxb->page, 0, | |
1291 | PAGE_SIZE << il->hw_params. | |
1292 | rx_page_order, PCI_DMA_FROMDEVICE); | |
96ebbe8d SG |
1293 | if (unlikely(pci_dma_mapping_error(il->pci_dev, |
1294 | rxb->page_dma))) { | |
1295 | __il_free_pages(il, rxb->page); | |
1296 | rxb->page = NULL; | |
1297 | list_add_tail(&rxb->list, &rxq->rx_used); | |
1298 | } else { | |
1299 | list_add_tail(&rxb->list, &rxq->rx_free); | |
1300 | rxq->free_count++; | |
1301 | } | |
4bc85c13 WYG |
1302 | } else |
1303 | list_add_tail(&rxb->list, &rxq->rx_used); | |
1304 | ||
1305 | spin_unlock_irqrestore(&rxq->lock, flags); | |
1306 | ||
1307 | i = (i + 1) & RX_QUEUE_MASK; | |
1308 | /* If there are a lot of unused frames, | |
1309 | * restock the Rx queue so ucode won't assert. */ | |
1310 | if (fill_rx) { | |
1311 | count++; | |
1312 | if (count >= 8) { | |
1313 | rxq->read = i; | |
46bc8d4b | 1314 | il3945_rx_replenish_now(il); |
4bc85c13 WYG |
1315 | count = 0; |
1316 | } | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | /* Backtrack one entry */ | |
1321 | rxq->read = i; | |
1322 | if (fill_rx) | |
46bc8d4b | 1323 | il3945_rx_replenish_now(il); |
4bc85c13 | 1324 | else |
46bc8d4b | 1325 | il3945_rx_queue_restock(il); |
4bc85c13 WYG |
1326 | } |
1327 | ||
1328 | /* call this function to flush any scheduled tasklet */ | |
e7392364 SG |
1329 | static inline void |
1330 | il3945_synchronize_irq(struct il_priv *il) | |
4bc85c13 | 1331 | { |
e7392364 | 1332 | /* wait to make sure we flush pending tasklet */ |
46bc8d4b SG |
1333 | synchronize_irq(il->pci_dev->irq); |
1334 | tasklet_kill(&il->irq_tasklet); | |
4bc85c13 WYG |
1335 | } |
1336 | ||
e7392364 SG |
1337 | static const char * |
1338 | il3945_desc_lookup(int i) | |
4bc85c13 WYG |
1339 | { |
1340 | switch (i) { | |
1341 | case 1: | |
1342 | return "FAIL"; | |
1343 | case 2: | |
1344 | return "BAD_PARAM"; | |
1345 | case 3: | |
1346 | return "BAD_CHECKSUM"; | |
1347 | case 4: | |
1348 | return "NMI_INTERRUPT"; | |
1349 | case 5: | |
1350 | return "SYSASSERT"; | |
1351 | case 6: | |
1352 | return "FATAL_ERROR"; | |
1353 | } | |
1354 | ||
1355 | return "UNKNOWN"; | |
1356 | } | |
1357 | ||
1358 | #define ERROR_START_OFFSET (1 * sizeof(u32)) | |
1359 | #define ERROR_ELEM_SIZE (7 * sizeof(u32)) | |
1360 | ||
e7392364 SG |
1361 | void |
1362 | il3945_dump_nic_error_log(struct il_priv *il) | |
4bc85c13 WYG |
1363 | { |
1364 | u32 i; | |
1365 | u32 desc, time, count, base, data1; | |
1366 | u32 blink1, blink2, ilink1, ilink2; | |
1367 | ||
46bc8d4b | 1368 | base = le32_to_cpu(il->card_alive.error_event_table_ptr); |
4bc85c13 | 1369 | |
e2ebc833 | 1370 | if (!il3945_hw_valid_rtc_data_addr(base)) { |
9406f797 | 1371 | IL_ERR("Not valid error log pointer 0x%08X\n", base); |
4bc85c13 WYG |
1372 | return; |
1373 | } | |
1374 | ||
46bc8d4b | 1375 | count = il_read_targ_mem(il, base); |
4bc85c13 WYG |
1376 | |
1377 | if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { | |
9406f797 | 1378 | IL_ERR("Start IWL Error Log Dump:\n"); |
e7392364 | 1379 | IL_ERR("Status: 0x%08lX, count: %d\n", il->status, count); |
4bc85c13 WYG |
1380 | } |
1381 | ||
9406f797 | 1382 | IL_ERR("Desc Time asrtPC blink2 " |
e7392364 | 1383 | "ilink1 nmiPC Line\n"); |
4bc85c13 WYG |
1384 | for (i = ERROR_START_OFFSET; |
1385 | i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET; | |
1386 | i += ERROR_ELEM_SIZE) { | |
46bc8d4b | 1387 | desc = il_read_targ_mem(il, base + i); |
e7392364 SG |
1388 | time = il_read_targ_mem(il, base + i + 1 * sizeof(u32)); |
1389 | blink1 = il_read_targ_mem(il, base + i + 2 * sizeof(u32)); | |
1390 | blink2 = il_read_targ_mem(il, base + i + 3 * sizeof(u32)); | |
1391 | ilink1 = il_read_targ_mem(il, base + i + 4 * sizeof(u32)); | |
1392 | ilink2 = il_read_targ_mem(il, base + i + 5 * sizeof(u32)); | |
1393 | data1 = il_read_targ_mem(il, base + i + 6 * sizeof(u32)); | |
4bc85c13 | 1394 | |
e7392364 SG |
1395 | IL_ERR("%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n", |
1396 | il3945_desc_lookup(desc), desc, time, blink1, blink2, | |
1397 | ilink1, ilink2, data1); | |
4bc85c13 WYG |
1398 | } |
1399 | } | |
1400 | ||
e7392364 SG |
1401 | static void |
1402 | il3945_irq_tasklet(struct il_priv *il) | |
4bc85c13 WYG |
1403 | { |
1404 | u32 inta, handled = 0; | |
1405 | u32 inta_fh; | |
1406 | unsigned long flags; | |
d3175167 | 1407 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
1408 | u32 inta_mask; |
1409 | #endif | |
1410 | ||
46bc8d4b | 1411 | spin_lock_irqsave(&il->lock, flags); |
4bc85c13 WYG |
1412 | |
1413 | /* Ack/clear/reset pending uCode interrupts. | |
1414 | * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS, | |
1415 | * and will clear only when CSR_FH_INT_STATUS gets cleared. */ | |
841b2cca SG |
1416 | inta = _il_rd(il, CSR_INT); |
1417 | _il_wr(il, CSR_INT, inta); | |
4bc85c13 WYG |
1418 | |
1419 | /* Ack/clear/reset pending flow-handler (DMA) interrupts. | |
1420 | * Any new interrupts that happen after this, either while we're | |
1421 | * in this tasklet, or later, will show up in next ISR/tasklet. */ | |
841b2cca SG |
1422 | inta_fh = _il_rd(il, CSR_FH_INT_STATUS); |
1423 | _il_wr(il, CSR_FH_INT_STATUS, inta_fh); | |
4bc85c13 | 1424 | |
d3175167 | 1425 | #ifdef CONFIG_IWLEGACY_DEBUG |
46bc8d4b | 1426 | if (il_get_debug_level(il) & IL_DL_ISR) { |
4bc85c13 | 1427 | /* just for debug */ |
841b2cca | 1428 | inta_mask = _il_rd(il, CSR_INT_MASK); |
e7392364 SG |
1429 | D_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta, |
1430 | inta_mask, inta_fh); | |
4bc85c13 WYG |
1431 | } |
1432 | #endif | |
1433 | ||
46bc8d4b | 1434 | spin_unlock_irqrestore(&il->lock, flags); |
4bc85c13 WYG |
1435 | |
1436 | /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not | |
1437 | * atomic, make sure that inta covers all the interrupts that | |
1438 | * we've discovered, even if FH interrupt came in just after | |
1439 | * reading CSR_INT. */ | |
1440 | if (inta_fh & CSR39_FH_INT_RX_MASK) | |
1441 | inta |= CSR_INT_BIT_FH_RX; | |
1442 | if (inta_fh & CSR39_FH_INT_TX_MASK) | |
1443 | inta |= CSR_INT_BIT_FH_TX; | |
1444 | ||
1445 | /* Now service all interrupt bits discovered above. */ | |
1446 | if (inta & CSR_INT_BIT_HW_ERR) { | |
9406f797 | 1447 | IL_ERR("Hardware error detected. Restarting.\n"); |
4bc85c13 WYG |
1448 | |
1449 | /* Tell the device to stop sending interrupts */ | |
46bc8d4b | 1450 | il_disable_interrupts(il); |
4bc85c13 | 1451 | |
46bc8d4b SG |
1452 | il->isr_stats.hw++; |
1453 | il_irq_handle_error(il); | |
4bc85c13 WYG |
1454 | |
1455 | handled |= CSR_INT_BIT_HW_ERR; | |
1456 | ||
1457 | return; | |
1458 | } | |
d3175167 | 1459 | #ifdef CONFIG_IWLEGACY_DEBUG |
46bc8d4b | 1460 | if (il_get_debug_level(il) & (IL_DL_ISR)) { |
4bc85c13 WYG |
1461 | /* NIC fires this, but we don't use it, redundant with WAKEUP */ |
1462 | if (inta & CSR_INT_BIT_SCD) { | |
58de00a4 | 1463 | D_ISR("Scheduler finished to transmit " |
e7392364 | 1464 | "the frame/frames.\n"); |
46bc8d4b | 1465 | il->isr_stats.sch++; |
4bc85c13 WYG |
1466 | } |
1467 | ||
1468 | /* Alive notification via Rx interrupt will do the real work */ | |
1469 | if (inta & CSR_INT_BIT_ALIVE) { | |
58de00a4 | 1470 | D_ISR("Alive interrupt\n"); |
46bc8d4b | 1471 | il->isr_stats.alive++; |
4bc85c13 WYG |
1472 | } |
1473 | } | |
1474 | #endif | |
1475 | /* Safely ignore these bits for debug checks below */ | |
1476 | inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE); | |
1477 | ||
1478 | /* Error detected by uCode */ | |
1479 | if (inta & CSR_INT_BIT_SW_ERR) { | |
e7392364 SG |
1480 | IL_ERR("Microcode SW error detected. " "Restarting 0x%X.\n", |
1481 | inta); | |
46bc8d4b SG |
1482 | il->isr_stats.sw++; |
1483 | il_irq_handle_error(il); | |
4bc85c13 WYG |
1484 | handled |= CSR_INT_BIT_SW_ERR; |
1485 | } | |
1486 | ||
1487 | /* uCode wakes up after power-down sleep */ | |
1488 | if (inta & CSR_INT_BIT_WAKEUP) { | |
58de00a4 | 1489 | D_ISR("Wakeup interrupt\n"); |
46bc8d4b | 1490 | il_rx_queue_update_write_ptr(il, &il->rxq); |
59f01183 SG |
1491 | |
1492 | spin_lock_irqsave(&il->lock, flags); | |
46bc8d4b SG |
1493 | il_txq_update_write_ptr(il, &il->txq[0]); |
1494 | il_txq_update_write_ptr(il, &il->txq[1]); | |
1495 | il_txq_update_write_ptr(il, &il->txq[2]); | |
1496 | il_txq_update_write_ptr(il, &il->txq[3]); | |
1497 | il_txq_update_write_ptr(il, &il->txq[4]); | |
59f01183 | 1498 | spin_unlock_irqrestore(&il->lock, flags); |
46bc8d4b SG |
1499 | |
1500 | il->isr_stats.wakeup++; | |
4bc85c13 WYG |
1501 | handled |= CSR_INT_BIT_WAKEUP; |
1502 | } | |
1503 | ||
1504 | /* All uCode command responses, including Tx command responses, | |
1505 | * Rx "responses" (frame-received notification), and other | |
1506 | * notifications from uCode come through here*/ | |
1507 | if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) { | |
46bc8d4b SG |
1508 | il3945_rx_handle(il); |
1509 | il->isr_stats.rx++; | |
4bc85c13 WYG |
1510 | handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX); |
1511 | } | |
1512 | ||
1513 | if (inta & CSR_INT_BIT_FH_TX) { | |
58de00a4 | 1514 | D_ISR("Tx interrupt\n"); |
46bc8d4b | 1515 | il->isr_stats.tx++; |
4bc85c13 | 1516 | |
841b2cca | 1517 | _il_wr(il, CSR_FH_INT_STATUS, (1 << 6)); |
e7392364 | 1518 | il_wr(il, FH39_TCSR_CREDIT(FH39_SRVC_CHNL), 0x0); |
4bc85c13 WYG |
1519 | handled |= CSR_INT_BIT_FH_TX; |
1520 | } | |
1521 | ||
1522 | if (inta & ~handled) { | |
9406f797 | 1523 | IL_ERR("Unhandled INTA bits 0x%08x\n", inta & ~handled); |
46bc8d4b | 1524 | il->isr_stats.unhandled++; |
4bc85c13 WYG |
1525 | } |
1526 | ||
46bc8d4b | 1527 | if (inta & ~il->inta_mask) { |
9406f797 | 1528 | IL_WARN("Disabled INTA bits 0x%08x were pending\n", |
e7392364 | 1529 | inta & ~il->inta_mask); |
53143a18 | 1530 | IL_WARN(" with inta_fh = 0x%08x\n", inta_fh); |
4bc85c13 WYG |
1531 | } |
1532 | ||
1533 | /* Re-enable all interrupts */ | |
1534 | /* only Re-enable if disabled by irq */ | |
a6766ccd | 1535 | if (test_bit(S_INT_ENABLED, &il->status)) |
46bc8d4b | 1536 | il_enable_interrupts(il); |
4bc85c13 | 1537 | |
d3175167 | 1538 | #ifdef CONFIG_IWLEGACY_DEBUG |
46bc8d4b | 1539 | if (il_get_debug_level(il) & (IL_DL_ISR)) { |
841b2cca SG |
1540 | inta = _il_rd(il, CSR_INT); |
1541 | inta_mask = _il_rd(il, CSR_INT_MASK); | |
1542 | inta_fh = _il_rd(il, CSR_FH_INT_STATUS); | |
58de00a4 | 1543 | D_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, " |
e7392364 | 1544 | "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags); |
4bc85c13 WYG |
1545 | } |
1546 | #endif | |
1547 | } | |
1548 | ||
e7392364 SG |
1549 | static int |
1550 | il3945_get_channels_for_scan(struct il_priv *il, enum ieee80211_band band, | |
1551 | u8 is_active, u8 n_probes, | |
1552 | struct il3945_scan_channel *scan_ch, | |
1553 | struct ieee80211_vif *vif) | |
4bc85c13 WYG |
1554 | { |
1555 | struct ieee80211_channel *chan; | |
1556 | const struct ieee80211_supported_band *sband; | |
e2ebc833 | 1557 | const struct il_channel_info *ch_info; |
4bc85c13 WYG |
1558 | u16 passive_dwell = 0; |
1559 | u16 active_dwell = 0; | |
1560 | int added, i; | |
1561 | ||
46bc8d4b | 1562 | sband = il_get_hw_mode(il, band); |
4bc85c13 WYG |
1563 | if (!sband) |
1564 | return 0; | |
1565 | ||
46bc8d4b SG |
1566 | active_dwell = il_get_active_dwell_time(il, band, n_probes); |
1567 | passive_dwell = il_get_passive_dwell_time(il, band, vif); | |
4bc85c13 WYG |
1568 | |
1569 | if (passive_dwell <= active_dwell) | |
1570 | passive_dwell = active_dwell + 1; | |
1571 | ||
46bc8d4b SG |
1572 | for (i = 0, added = 0; i < il->scan_request->n_channels; i++) { |
1573 | chan = il->scan_request->channels[i]; | |
4bc85c13 WYG |
1574 | |
1575 | if (chan->band != band) | |
1576 | continue; | |
1577 | ||
1578 | scan_ch->channel = chan->hw_value; | |
1579 | ||
e7392364 | 1580 | ch_info = il_get_channel_info(il, band, scan_ch->channel); |
e2ebc833 | 1581 | if (!il_is_channel_valid(ch_info)) { |
e7392364 | 1582 | D_SCAN("Channel %d is INVALID for this band.\n", |
be663ab6 | 1583 | scan_ch->channel); |
4bc85c13 WYG |
1584 | continue; |
1585 | } | |
1586 | ||
1587 | scan_ch->active_dwell = cpu_to_le16(active_dwell); | |
1588 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); | |
1589 | /* If passive , set up for auto-switch | |
1590 | * and use long active_dwell time. | |
1591 | */ | |
e2ebc833 | 1592 | if (!is_active || il_is_channel_passive(ch_info) || |
8fe02e16 | 1593 | (chan->flags & IEEE80211_CHAN_NO_IR)) { |
4bc85c13 | 1594 | scan_ch->type = 0; /* passive */ |
46bc8d4b | 1595 | if (IL_UCODE_API(il->ucode_ver) == 1) |
e7392364 SG |
1596 | scan_ch->active_dwell = |
1597 | cpu_to_le16(passive_dwell - 1); | |
4bc85c13 WYG |
1598 | } else { |
1599 | scan_ch->type = 1; /* active */ | |
1600 | } | |
1601 | ||
1602 | /* Set direct probe bits. These may be used both for active | |
1603 | * scan channels (probes gets sent right away), | |
1604 | * or for passive channels (probes get se sent only after | |
1605 | * hearing clear Rx packet).*/ | |
46bc8d4b | 1606 | if (IL_UCODE_API(il->ucode_ver) >= 2) { |
4bc85c13 | 1607 | if (n_probes) |
d3175167 | 1608 | scan_ch->type |= IL39_SCAN_PROBE_MASK(n_probes); |
4bc85c13 WYG |
1609 | } else { |
1610 | /* uCode v1 does not allow setting direct probe bits on | |
1611 | * passive channel. */ | |
1612 | if ((scan_ch->type & 1) && n_probes) | |
d3175167 | 1613 | scan_ch->type |= IL39_SCAN_PROBE_MASK(n_probes); |
4bc85c13 WYG |
1614 | } |
1615 | ||
1616 | /* Set txpower levels to defaults */ | |
1617 | scan_ch->tpc.dsp_atten = 110; | |
1618 | /* scan_pwr_info->tpc.dsp_atten; */ | |
1619 | ||
1620 | /*scan_pwr_info->tpc.tx_gain; */ | |
1621 | if (band == IEEE80211_BAND_5GHZ) | |
1622 | scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3; | |
1623 | else { | |
1624 | scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3)); | |
1625 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use | |
1626 | * power level: | |
1627 | * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3; | |
1628 | */ | |
1629 | } | |
1630 | ||
e7392364 SG |
1631 | D_SCAN("Scanning %d [%s %d]\n", scan_ch->channel, |
1632 | (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE", | |
1633 | (scan_ch->type & 1) ? active_dwell : passive_dwell); | |
4bc85c13 WYG |
1634 | |
1635 | scan_ch++; | |
1636 | added++; | |
1637 | } | |
1638 | ||
58de00a4 | 1639 | D_SCAN("total channels to scan %d\n", added); |
4bc85c13 WYG |
1640 | return added; |
1641 | } | |
1642 | ||
e7392364 SG |
1643 | static void |
1644 | il3945_init_hw_rates(struct il_priv *il, struct ieee80211_rate *rates) | |
4bc85c13 WYG |
1645 | { |
1646 | int i; | |
1647 | ||
2eb05816 | 1648 | for (i = 0; i < RATE_COUNT_LEGACY; i++) { |
e2ebc833 | 1649 | rates[i].bitrate = il3945_rates[i].ieee * 5; |
e7392364 | 1650 | rates[i].hw_value = i; /* Rate scaling will work on idxes */ |
4bc85c13 WYG |
1651 | rates[i].hw_value_short = i; |
1652 | rates[i].flags = 0; | |
d3175167 | 1653 | if (i > IL39_LAST_OFDM_RATE || i < IL_FIRST_OFDM_RATE) { |
4bc85c13 WYG |
1654 | /* |
1655 | * If CCK != 1M then set short preamble rate flag. | |
1656 | */ | |
e7392364 SG |
1657 | rates[i].flags |= |
1658 | (il3945_rates[i].plcp == | |
1659 | 10) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE; | |
4bc85c13 WYG |
1660 | } |
1661 | } | |
1662 | } | |
1663 | ||
1664 | /****************************************************************************** | |
1665 | * | |
1666 | * uCode download functions | |
1667 | * | |
1668 | ******************************************************************************/ | |
1669 | ||
e7392364 SG |
1670 | static void |
1671 | il3945_dealloc_ucode_pci(struct il_priv *il) | |
4bc85c13 | 1672 | { |
46bc8d4b SG |
1673 | il_free_fw_desc(il->pci_dev, &il->ucode_code); |
1674 | il_free_fw_desc(il->pci_dev, &il->ucode_data); | |
1675 | il_free_fw_desc(il->pci_dev, &il->ucode_data_backup); | |
1676 | il_free_fw_desc(il->pci_dev, &il->ucode_init); | |
1677 | il_free_fw_desc(il->pci_dev, &il->ucode_init_data); | |
1678 | il_free_fw_desc(il->pci_dev, &il->ucode_boot); | |
4bc85c13 WYG |
1679 | } |
1680 | ||
1681 | /** | |
e2ebc833 | 1682 | * il3945_verify_inst_full - verify runtime uCode image in card vs. host, |
4bc85c13 WYG |
1683 | * looking at all data. |
1684 | */ | |
e7392364 SG |
1685 | static int |
1686 | il3945_verify_inst_full(struct il_priv *il, __le32 * image, u32 len) | |
4bc85c13 WYG |
1687 | { |
1688 | u32 val; | |
1689 | u32 save_len = len; | |
1690 | int rc = 0; | |
1691 | u32 errcnt; | |
1692 | ||
58de00a4 | 1693 | D_INFO("ucode inst image size is %u\n", len); |
4bc85c13 | 1694 | |
e7392364 | 1695 | il_wr(il, HBUS_TARG_MEM_RADDR, IL39_RTC_INST_LOWER_BOUND); |
4bc85c13 WYG |
1696 | |
1697 | errcnt = 0; | |
1698 | for (; len > 0; len -= sizeof(u32), image++) { | |
1699 | /* read data comes through single port, auto-incr addr */ | |
1700 | /* NOTE: Use the debugless read so we don't flood kernel log | |
e2ebc833 | 1701 | * if IL_DL_IO is set */ |
1c8cae57 | 1702 | val = _il_rd(il, HBUS_TARG_MEM_RDAT); |
4bc85c13 | 1703 | if (val != le32_to_cpu(*image)) { |
9406f797 | 1704 | IL_ERR("uCode INST section is invalid at " |
e7392364 SG |
1705 | "offset 0x%x, is 0x%x, s/b 0x%x\n", |
1706 | save_len - len, val, le32_to_cpu(*image)); | |
4bc85c13 WYG |
1707 | rc = -EIO; |
1708 | errcnt++; | |
1709 | if (errcnt >= 20) | |
1710 | break; | |
1711 | } | |
1712 | } | |
1713 | ||
4bc85c13 | 1714 | if (!errcnt) |
e7392364 | 1715 | D_INFO("ucode image in INSTRUCTION memory is good\n"); |
4bc85c13 WYG |
1716 | |
1717 | return rc; | |
1718 | } | |
1719 | ||
4bc85c13 | 1720 | /** |
e2ebc833 | 1721 | * il3945_verify_inst_sparse - verify runtime uCode image in card vs. host, |
4bc85c13 WYG |
1722 | * using sample data 100 bytes apart. If these sample points are good, |
1723 | * it's a pretty good bet that everything between them is good, too. | |
1724 | */ | |
e7392364 SG |
1725 | static int |
1726 | il3945_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len) | |
4bc85c13 WYG |
1727 | { |
1728 | u32 val; | |
1729 | int rc = 0; | |
1730 | u32 errcnt = 0; | |
1731 | u32 i; | |
1732 | ||
58de00a4 | 1733 | D_INFO("ucode inst image size is %u\n", len); |
4bc85c13 | 1734 | |
e7392364 | 1735 | for (i = 0; i < len; i += 100, image += 100 / sizeof(u32)) { |
4bc85c13 WYG |
1736 | /* read data comes through single port, auto-incr addr */ |
1737 | /* NOTE: Use the debugless read so we don't flood kernel log | |
e2ebc833 | 1738 | * if IL_DL_IO is set */ |
e7392364 | 1739 | il_wr(il, HBUS_TARG_MEM_RADDR, i + IL39_RTC_INST_LOWER_BOUND); |
1c8cae57 | 1740 | val = _il_rd(il, HBUS_TARG_MEM_RDAT); |
4bc85c13 | 1741 | if (val != le32_to_cpu(*image)) { |
e7392364 | 1742 | #if 0 /* Enable this if you want to see details */ |
9406f797 | 1743 | IL_ERR("uCode INST section is invalid at " |
e7392364 SG |
1744 | "offset 0x%x, is 0x%x, s/b 0x%x\n", i, val, |
1745 | *image); | |
4bc85c13 WYG |
1746 | #endif |
1747 | rc = -EIO; | |
1748 | errcnt++; | |
1749 | if (errcnt >= 3) | |
1750 | break; | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | return rc; | |
1755 | } | |
1756 | ||
4bc85c13 | 1757 | /** |
e2ebc833 | 1758 | * il3945_verify_ucode - determine which instruction image is in SRAM, |
4bc85c13 WYG |
1759 | * and verify its contents |
1760 | */ | |
e7392364 SG |
1761 | static int |
1762 | il3945_verify_ucode(struct il_priv *il) | |
4bc85c13 WYG |
1763 | { |
1764 | __le32 *image; | |
1765 | u32 len; | |
1766 | int rc = 0; | |
1767 | ||
1768 | /* Try bootstrap */ | |
e7392364 | 1769 | image = (__le32 *) il->ucode_boot.v_addr; |
46bc8d4b SG |
1770 | len = il->ucode_boot.len; |
1771 | rc = il3945_verify_inst_sparse(il, image, len); | |
4bc85c13 | 1772 | if (rc == 0) { |
58de00a4 | 1773 | D_INFO("Bootstrap uCode is good in inst SRAM\n"); |
4bc85c13 WYG |
1774 | return 0; |
1775 | } | |
1776 | ||
1777 | /* Try initialize */ | |
e7392364 | 1778 | image = (__le32 *) il->ucode_init.v_addr; |
46bc8d4b SG |
1779 | len = il->ucode_init.len; |
1780 | rc = il3945_verify_inst_sparse(il, image, len); | |
4bc85c13 | 1781 | if (rc == 0) { |
58de00a4 | 1782 | D_INFO("Initialize uCode is good in inst SRAM\n"); |
4bc85c13 WYG |
1783 | return 0; |
1784 | } | |
1785 | ||
1786 | /* Try runtime/protocol */ | |
e7392364 | 1787 | image = (__le32 *) il->ucode_code.v_addr; |
46bc8d4b SG |
1788 | len = il->ucode_code.len; |
1789 | rc = il3945_verify_inst_sparse(il, image, len); | |
4bc85c13 | 1790 | if (rc == 0) { |
58de00a4 | 1791 | D_INFO("Runtime uCode is good in inst SRAM\n"); |
4bc85c13 WYG |
1792 | return 0; |
1793 | } | |
1794 | ||
9406f797 | 1795 | IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n"); |
4bc85c13 WYG |
1796 | |
1797 | /* Since nothing seems to match, show first several data entries in | |
1798 | * instruction SRAM, so maybe visual inspection will give a clue. | |
1799 | * Selection of bootstrap image (vs. other images) is arbitrary. */ | |
e7392364 | 1800 | image = (__le32 *) il->ucode_boot.v_addr; |
46bc8d4b SG |
1801 | len = il->ucode_boot.len; |
1802 | rc = il3945_verify_inst_full(il, image, len); | |
4bc85c13 WYG |
1803 | |
1804 | return rc; | |
1805 | } | |
1806 | ||
e7392364 SG |
1807 | static void |
1808 | il3945_nic_start(struct il_priv *il) | |
4bc85c13 WYG |
1809 | { |
1810 | /* Remove all resets to allow NIC to operate */ | |
841b2cca | 1811 | _il_wr(il, CSR_RESET, 0); |
4bc85c13 WYG |
1812 | } |
1813 | ||
d3175167 | 1814 | #define IL3945_UCODE_GET(item) \ |
e2ebc833 | 1815 | static u32 il3945_ucode_get_##item(const struct il_ucode_header *ucode)\ |
4bc85c13 | 1816 | { \ |
be663ab6 | 1817 | return le32_to_cpu(ucode->v1.item); \ |
4bc85c13 WYG |
1818 | } |
1819 | ||
e7392364 SG |
1820 | static u32 |
1821 | il3945_ucode_get_header_size(u32 api_ver) | |
4bc85c13 WYG |
1822 | { |
1823 | return 24; | |
1824 | } | |
1825 | ||
e7392364 SG |
1826 | static u8 * |
1827 | il3945_ucode_get_data(const struct il_ucode_header *ucode) | |
4bc85c13 | 1828 | { |
be663ab6 | 1829 | return (u8 *) ucode->v1.data; |
4bc85c13 WYG |
1830 | } |
1831 | ||
d3175167 SG |
1832 | IL3945_UCODE_GET(inst_size); |
1833 | IL3945_UCODE_GET(data_size); | |
1834 | IL3945_UCODE_GET(init_size); | |
1835 | IL3945_UCODE_GET(init_data_size); | |
1836 | IL3945_UCODE_GET(boot_size); | |
4bc85c13 WYG |
1837 | |
1838 | /** | |
e2ebc833 | 1839 | * il3945_read_ucode - Read uCode images from disk file. |
4bc85c13 WYG |
1840 | * |
1841 | * Copy into buffers for card to fetch via bus-mastering | |
1842 | */ | |
e7392364 SG |
1843 | static int |
1844 | il3945_read_ucode(struct il_priv *il) | |
4bc85c13 | 1845 | { |
e2ebc833 | 1846 | const struct il_ucode_header *ucode; |
0c2c8852 | 1847 | int ret = -EINVAL, idx; |
4bc85c13 WYG |
1848 | const struct firmware *ucode_raw; |
1849 | /* firmware file name contains uCode/driver compatibility version */ | |
46bc8d4b SG |
1850 | const char *name_pre = il->cfg->fw_name_pre; |
1851 | const unsigned int api_max = il->cfg->ucode_api_max; | |
1852 | const unsigned int api_min = il->cfg->ucode_api_min; | |
4bc85c13 WYG |
1853 | char buf[25]; |
1854 | u8 *src; | |
1855 | size_t len; | |
1856 | u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size; | |
1857 | ||
1858 | /* Ask kernel firmware_class module to get the boot firmware off disk. | |
1859 | * request_firmware() is synchronous, file is in memory on return. */ | |
0c2c8852 SG |
1860 | for (idx = api_max; idx >= api_min; idx--) { |
1861 | sprintf(buf, "%s%u%s", name_pre, idx, ".ucode"); | |
46bc8d4b | 1862 | ret = request_firmware(&ucode_raw, buf, &il->pci_dev->dev); |
4bc85c13 | 1863 | if (ret < 0) { |
e7392364 | 1864 | IL_ERR("%s firmware file req failed: %d\n", buf, ret); |
4bc85c13 WYG |
1865 | if (ret == -ENOENT) |
1866 | continue; | |
1867 | else | |
1868 | goto error; | |
1869 | } else { | |
0c2c8852 | 1870 | if (idx < api_max) |
9406f797 | 1871 | IL_ERR("Loaded firmware %s, " |
e7392364 SG |
1872 | "which is deprecated. " |
1873 | " Please use API v%u instead.\n", buf, | |
1874 | api_max); | |
58de00a4 | 1875 | D_INFO("Got firmware '%s' file " |
e7392364 | 1876 | "(%zd bytes) from disk\n", buf, ucode_raw->size); |
4bc85c13 WYG |
1877 | break; |
1878 | } | |
1879 | } | |
1880 | ||
1881 | if (ret < 0) | |
1882 | goto error; | |
1883 | ||
1884 | /* Make sure that we got at least our header! */ | |
e7392364 | 1885 | if (ucode_raw->size < il3945_ucode_get_header_size(1)) { |
9406f797 | 1886 | IL_ERR("File size way too small!\n"); |
4bc85c13 WYG |
1887 | ret = -EINVAL; |
1888 | goto err_release; | |
1889 | } | |
1890 | ||
1891 | /* Data from ucode file: header followed by uCode images */ | |
e2ebc833 | 1892 | ucode = (struct il_ucode_header *)ucode_raw->data; |
4bc85c13 | 1893 | |
46bc8d4b SG |
1894 | il->ucode_ver = le32_to_cpu(ucode->ver); |
1895 | api_ver = IL_UCODE_API(il->ucode_ver); | |
e2ebc833 SG |
1896 | inst_size = il3945_ucode_get_inst_size(ucode); |
1897 | data_size = il3945_ucode_get_data_size(ucode); | |
1898 | init_size = il3945_ucode_get_init_size(ucode); | |
1899 | init_data_size = il3945_ucode_get_init_data_size(ucode); | |
1900 | boot_size = il3945_ucode_get_boot_size(ucode); | |
1901 | src = il3945_ucode_get_data(ucode); | |
4bc85c13 WYG |
1902 | |
1903 | /* api_ver should match the api version forming part of the | |
1904 | * firmware filename ... but we don't check for that and only rely | |
1905 | * on the API version read from firmware header from here on forward */ | |
1906 | ||
1907 | if (api_ver < api_min || api_ver > api_max) { | |
9406f797 | 1908 | IL_ERR("Driver unable to support your firmware API. " |
e7392364 SG |
1909 | "Driver supports v%u, firmware is v%u.\n", api_max, |
1910 | api_ver); | |
46bc8d4b | 1911 | il->ucode_ver = 0; |
4bc85c13 WYG |
1912 | ret = -EINVAL; |
1913 | goto err_release; | |
1914 | } | |
1915 | if (api_ver != api_max) | |
9406f797 | 1916 | IL_ERR("Firmware has old API version. Expected %u, " |
e7392364 SG |
1917 | "got %u. New firmware can be obtained " |
1918 | "from http://www.intellinuxwireless.org.\n", api_max, | |
1919 | api_ver); | |
4bc85c13 | 1920 | |
9406f797 | 1921 | IL_INFO("loaded firmware version %u.%u.%u.%u\n", |
e7392364 SG |
1922 | IL_UCODE_MAJOR(il->ucode_ver), IL_UCODE_MINOR(il->ucode_ver), |
1923 | IL_UCODE_API(il->ucode_ver), IL_UCODE_SERIAL(il->ucode_ver)); | |
46bc8d4b | 1924 | |
e7392364 SG |
1925 | snprintf(il->hw->wiphy->fw_version, sizeof(il->hw->wiphy->fw_version), |
1926 | "%u.%u.%u.%u", IL_UCODE_MAJOR(il->ucode_ver), | |
1927 | IL_UCODE_MINOR(il->ucode_ver), IL_UCODE_API(il->ucode_ver), | |
1928 | IL_UCODE_SERIAL(il->ucode_ver)); | |
4bc85c13 | 1929 | |
e7392364 SG |
1930 | D_INFO("f/w package hdr ucode version raw = 0x%x\n", il->ucode_ver); |
1931 | D_INFO("f/w package hdr runtime inst size = %u\n", inst_size); | |
1932 | D_INFO("f/w package hdr runtime data size = %u\n", data_size); | |
1933 | D_INFO("f/w package hdr init inst size = %u\n", init_size); | |
1934 | D_INFO("f/w package hdr init data size = %u\n", init_data_size); | |
1935 | D_INFO("f/w package hdr boot inst size = %u\n", boot_size); | |
4bc85c13 WYG |
1936 | |
1937 | /* Verify size of file vs. image size info in file's header */ | |
e7392364 SG |
1938 | if (ucode_raw->size != |
1939 | il3945_ucode_get_header_size(api_ver) + inst_size + data_size + | |
1940 | init_size + init_data_size + boot_size) { | |
4bc85c13 | 1941 | |
e7392364 SG |
1942 | D_INFO("uCode file size %zd does not match expected size\n", |
1943 | ucode_raw->size); | |
4bc85c13 WYG |
1944 | ret = -EINVAL; |
1945 | goto err_release; | |
1946 | } | |
1947 | ||
1948 | /* Verify that uCode images will fit in card's SRAM */ | |
d3175167 | 1949 | if (inst_size > IL39_MAX_INST_SIZE) { |
e7392364 | 1950 | D_INFO("uCode instr len %d too large to fit in\n", inst_size); |
4bc85c13 WYG |
1951 | ret = -EINVAL; |
1952 | goto err_release; | |
1953 | } | |
1954 | ||
d3175167 | 1955 | if (data_size > IL39_MAX_DATA_SIZE) { |
e7392364 | 1956 | D_INFO("uCode data len %d too large to fit in\n", data_size); |
4bc85c13 WYG |
1957 | ret = -EINVAL; |
1958 | goto err_release; | |
1959 | } | |
d3175167 | 1960 | if (init_size > IL39_MAX_INST_SIZE) { |
e7392364 SG |
1961 | D_INFO("uCode init instr len %d too large to fit in\n", |
1962 | init_size); | |
4bc85c13 WYG |
1963 | ret = -EINVAL; |
1964 | goto err_release; | |
1965 | } | |
d3175167 | 1966 | if (init_data_size > IL39_MAX_DATA_SIZE) { |
e7392364 SG |
1967 | D_INFO("uCode init data len %d too large to fit in\n", |
1968 | init_data_size); | |
4bc85c13 WYG |
1969 | ret = -EINVAL; |
1970 | goto err_release; | |
1971 | } | |
d3175167 | 1972 | if (boot_size > IL39_MAX_BSM_SIZE) { |
e7392364 SG |
1973 | D_INFO("uCode boot instr len %d too large to fit in\n", |
1974 | boot_size); | |
4bc85c13 WYG |
1975 | ret = -EINVAL; |
1976 | goto err_release; | |
1977 | } | |
1978 | ||
1979 | /* Allocate ucode buffers for card's bus-master loading ... */ | |
1980 | ||
1981 | /* Runtime instructions and 2 copies of data: | |
1982 | * 1) unmodified from disk | |
1983 | * 2) backup cache for save/restore during power-downs */ | |
46bc8d4b SG |
1984 | il->ucode_code.len = inst_size; |
1985 | il_alloc_fw_desc(il->pci_dev, &il->ucode_code); | |
4bc85c13 | 1986 | |
46bc8d4b SG |
1987 | il->ucode_data.len = data_size; |
1988 | il_alloc_fw_desc(il->pci_dev, &il->ucode_data); | |
4bc85c13 | 1989 | |
46bc8d4b SG |
1990 | il->ucode_data_backup.len = data_size; |
1991 | il_alloc_fw_desc(il->pci_dev, &il->ucode_data_backup); | |
4bc85c13 | 1992 | |
46bc8d4b SG |
1993 | if (!il->ucode_code.v_addr || !il->ucode_data.v_addr || |
1994 | !il->ucode_data_backup.v_addr) | |
4bc85c13 WYG |
1995 | goto err_pci_alloc; |
1996 | ||
1997 | /* Initialization instructions and data */ | |
1998 | if (init_size && init_data_size) { | |
46bc8d4b SG |
1999 | il->ucode_init.len = init_size; |
2000 | il_alloc_fw_desc(il->pci_dev, &il->ucode_init); | |
4bc85c13 | 2001 | |
46bc8d4b SG |
2002 | il->ucode_init_data.len = init_data_size; |
2003 | il_alloc_fw_desc(il->pci_dev, &il->ucode_init_data); | |
4bc85c13 | 2004 | |
46bc8d4b | 2005 | if (!il->ucode_init.v_addr || !il->ucode_init_data.v_addr) |
4bc85c13 WYG |
2006 | goto err_pci_alloc; |
2007 | } | |
2008 | ||
2009 | /* Bootstrap (instructions only, no data) */ | |
2010 | if (boot_size) { | |
46bc8d4b SG |
2011 | il->ucode_boot.len = boot_size; |
2012 | il_alloc_fw_desc(il->pci_dev, &il->ucode_boot); | |
4bc85c13 | 2013 | |
46bc8d4b | 2014 | if (!il->ucode_boot.v_addr) |
4bc85c13 WYG |
2015 | goto err_pci_alloc; |
2016 | } | |
2017 | ||
2018 | /* Copy images into buffers for card's bus-master reads ... */ | |
2019 | ||
2020 | /* Runtime instructions (first block of data in file) */ | |
2021 | len = inst_size; | |
e7392364 | 2022 | D_INFO("Copying (but not loading) uCode instr len %zd\n", len); |
46bc8d4b | 2023 | memcpy(il->ucode_code.v_addr, src, len); |
4bc85c13 WYG |
2024 | src += len; |
2025 | ||
58de00a4 | 2026 | D_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n", |
e7392364 | 2027 | il->ucode_code.v_addr, (u32) il->ucode_code.p_addr); |
4bc85c13 WYG |
2028 | |
2029 | /* Runtime data (2nd block) | |
e2ebc833 | 2030 | * NOTE: Copy into backup buffer will be done in il3945_up() */ |
4bc85c13 | 2031 | len = data_size; |
e7392364 | 2032 | D_INFO("Copying (but not loading) uCode data len %zd\n", len); |
46bc8d4b SG |
2033 | memcpy(il->ucode_data.v_addr, src, len); |
2034 | memcpy(il->ucode_data_backup.v_addr, src, len); | |
4bc85c13 WYG |
2035 | src += len; |
2036 | ||
2037 | /* Initialization instructions (3rd block) */ | |
2038 | if (init_size) { | |
2039 | len = init_size; | |
e7392364 | 2040 | D_INFO("Copying (but not loading) init instr len %zd\n", len); |
46bc8d4b | 2041 | memcpy(il->ucode_init.v_addr, src, len); |
4bc85c13 WYG |
2042 | src += len; |
2043 | } | |
2044 | ||
2045 | /* Initialization data (4th block) */ | |
2046 | if (init_data_size) { | |
2047 | len = init_data_size; | |
e7392364 | 2048 | D_INFO("Copying (but not loading) init data len %zd\n", len); |
46bc8d4b | 2049 | memcpy(il->ucode_init_data.v_addr, src, len); |
4bc85c13 WYG |
2050 | src += len; |
2051 | } | |
2052 | ||
2053 | /* Bootstrap instructions (5th block) */ | |
2054 | len = boot_size; | |
e7392364 | 2055 | D_INFO("Copying (but not loading) boot instr len %zd\n", len); |
46bc8d4b | 2056 | memcpy(il->ucode_boot.v_addr, src, len); |
4bc85c13 WYG |
2057 | |
2058 | /* We have our copies now, allow OS release its copies */ | |
2059 | release_firmware(ucode_raw); | |
2060 | return 0; | |
2061 | ||
e7392364 | 2062 | err_pci_alloc: |
9406f797 | 2063 | IL_ERR("failed to allocate pci memory\n"); |
4bc85c13 | 2064 | ret = -ENOMEM; |
46bc8d4b | 2065 | il3945_dealloc_ucode_pci(il); |
4bc85c13 | 2066 | |
e7392364 | 2067 | err_release: |
4bc85c13 WYG |
2068 | release_firmware(ucode_raw); |
2069 | ||
e7392364 | 2070 | error: |
4bc85c13 WYG |
2071 | return ret; |
2072 | } | |
2073 | ||
4bc85c13 | 2074 | /** |
e2ebc833 | 2075 | * il3945_set_ucode_ptrs - Set uCode address location |
4bc85c13 WYG |
2076 | * |
2077 | * Tell initialization uCode where to find runtime uCode. | |
2078 | * | |
2079 | * BSM registers initially contain pointers to initialization uCode. | |
2080 | * We need to replace them to load runtime uCode inst and data, | |
2081 | * and to save runtime data when powering down. | |
2082 | */ | |
e7392364 SG |
2083 | static int |
2084 | il3945_set_ucode_ptrs(struct il_priv *il) | |
4bc85c13 WYG |
2085 | { |
2086 | dma_addr_t pinst; | |
2087 | dma_addr_t pdata; | |
2088 | ||
2089 | /* bits 31:0 for 3945 */ | |
46bc8d4b SG |
2090 | pinst = il->ucode_code.p_addr; |
2091 | pdata = il->ucode_data_backup.p_addr; | |
4bc85c13 WYG |
2092 | |
2093 | /* Tell bootstrap uCode where to find image to load */ | |
db54eb57 SG |
2094 | il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst); |
2095 | il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata); | |
e7392364 | 2096 | il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->ucode_data.len); |
4bc85c13 WYG |
2097 | |
2098 | /* Inst byte count must be last to set up, bit 31 signals uCode | |
2099 | * that all new ptr/size info is in place */ | |
db54eb57 | 2100 | il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, |
e7392364 | 2101 | il->ucode_code.len | BSM_DRAM_INST_LOAD); |
4bc85c13 | 2102 | |
58de00a4 | 2103 | D_INFO("Runtime uCode pointers are set.\n"); |
4bc85c13 WYG |
2104 | |
2105 | return 0; | |
2106 | } | |
2107 | ||
2108 | /** | |
4d69c752 | 2109 | * il3945_init_alive_start - Called after N_ALIVE notification received |
4bc85c13 | 2110 | * |
4d69c752 | 2111 | * Called after N_ALIVE notification received from "initialize" uCode. |
4bc85c13 WYG |
2112 | * |
2113 | * Tell "initialize" uCode to go ahead and load the runtime uCode. | |
2114 | */ | |
e7392364 SG |
2115 | static void |
2116 | il3945_init_alive_start(struct il_priv *il) | |
4bc85c13 WYG |
2117 | { |
2118 | /* Check alive response for "valid" sign from uCode */ | |
46bc8d4b | 2119 | if (il->card_alive_init.is_valid != UCODE_VALID_OK) { |
4bc85c13 WYG |
2120 | /* We had an error bringing up the hardware, so take it |
2121 | * all the way back down so we can try again */ | |
58de00a4 | 2122 | D_INFO("Initialize Alive failed.\n"); |
4bc85c13 WYG |
2123 | goto restart; |
2124 | } | |
2125 | ||
2126 | /* Bootstrap uCode has loaded initialize uCode ... verify inst image. | |
2127 | * This is a paranoid check, because we would not have gotten the | |
2128 | * "initialize" alive if code weren't properly loaded. */ | |
46bc8d4b | 2129 | if (il3945_verify_ucode(il)) { |
4bc85c13 WYG |
2130 | /* Runtime instruction load was bad; |
2131 | * take it all the way back down so we can try again */ | |
58de00a4 | 2132 | D_INFO("Bad \"initialize\" uCode load.\n"); |
4bc85c13 WYG |
2133 | goto restart; |
2134 | } | |
2135 | ||
2136 | /* Send pointers to protocol/runtime uCode image ... init code will | |
2137 | * load and launch runtime uCode, which will send us another "Alive" | |
2138 | * notification. */ | |
58de00a4 | 2139 | D_INFO("Initialization Alive received.\n"); |
46bc8d4b | 2140 | if (il3945_set_ucode_ptrs(il)) { |
4bc85c13 WYG |
2141 | /* Runtime instruction load won't happen; |
2142 | * take it all the way back down so we can try again */ | |
58de00a4 | 2143 | D_INFO("Couldn't set up uCode pointers.\n"); |
4bc85c13 WYG |
2144 | goto restart; |
2145 | } | |
2146 | return; | |
2147 | ||
e7392364 | 2148 | restart: |
46bc8d4b | 2149 | queue_work(il->workqueue, &il->restart); |
4bc85c13 WYG |
2150 | } |
2151 | ||
2152 | /** | |
4d69c752 | 2153 | * il3945_alive_start - called after N_ALIVE notification received |
4bc85c13 | 2154 | * from protocol/runtime uCode (initialization uCode's |
e2ebc833 | 2155 | * Alive gets handled by il3945_init_alive_start()). |
4bc85c13 | 2156 | */ |
e7392364 SG |
2157 | static void |
2158 | il3945_alive_start(struct il_priv *il) | |
4bc85c13 WYG |
2159 | { |
2160 | int thermal_spin = 0; | |
2161 | u32 rfkill; | |
4bc85c13 | 2162 | |
58de00a4 | 2163 | D_INFO("Runtime Alive received.\n"); |
4bc85c13 | 2164 | |
46bc8d4b | 2165 | if (il->card_alive.is_valid != UCODE_VALID_OK) { |
4bc85c13 WYG |
2166 | /* We had an error bringing up the hardware, so take it |
2167 | * all the way back down so we can try again */ | |
58de00a4 | 2168 | D_INFO("Alive failed.\n"); |
4bc85c13 WYG |
2169 | goto restart; |
2170 | } | |
2171 | ||
2172 | /* Initialize uCode has loaded Runtime uCode ... verify inst image. | |
2173 | * This is a paranoid check, because we would not have gotten the | |
2174 | * "runtime" alive if code weren't properly loaded. */ | |
46bc8d4b | 2175 | if (il3945_verify_ucode(il)) { |
4bc85c13 WYG |
2176 | /* Runtime instruction load was bad; |
2177 | * take it all the way back down so we can try again */ | |
58de00a4 | 2178 | D_INFO("Bad runtime uCode load.\n"); |
4bc85c13 WYG |
2179 | goto restart; |
2180 | } | |
2181 | ||
db54eb57 | 2182 | rfkill = il_rd_prph(il, APMG_RFKILL_REG); |
58de00a4 | 2183 | D_INFO("RFKILL status: 0x%x\n", rfkill); |
4bc85c13 WYG |
2184 | |
2185 | if (rfkill & 0x1) { | |
bc269a8e | 2186 | clear_bit(S_RFKILL, &il->status); |
4bc85c13 WYG |
2187 | /* if RFKILL is not on, then wait for thermal |
2188 | * sensor in adapter to kick in */ | |
46bc8d4b | 2189 | while (il3945_hw_get_temperature(il) == 0) { |
4bc85c13 WYG |
2190 | thermal_spin++; |
2191 | udelay(10); | |
2192 | } | |
2193 | ||
2194 | if (thermal_spin) | |
58de00a4 | 2195 | D_INFO("Thermal calibration took %dus\n", |
e7392364 | 2196 | thermal_spin * 10); |
4bc85c13 | 2197 | } else |
bc269a8e | 2198 | set_bit(S_RFKILL, &il->status); |
4bc85c13 WYG |
2199 | |
2200 | /* After the ALIVE response, we can send commands to 3945 uCode */ | |
a6766ccd | 2201 | set_bit(S_ALIVE, &il->status); |
4bc85c13 WYG |
2202 | |
2203 | /* Enable watchdog to monitor the driver tx queues */ | |
46bc8d4b | 2204 | il_setup_watchdog(il); |
4bc85c13 | 2205 | |
46bc8d4b | 2206 | if (il_is_rfkill(il)) |
4bc85c13 WYG |
2207 | return; |
2208 | ||
46bc8d4b | 2209 | ieee80211_wake_queues(il->hw); |
4bc85c13 | 2210 | |
2eb05816 | 2211 | il->active_rate = RATES_MASK_3945; |
4bc85c13 | 2212 | |
46bc8d4b | 2213 | il_power_update_mode(il, true); |
4bc85c13 | 2214 | |
7c2cde2e | 2215 | if (il_is_associated(il)) { |
e2ebc833 | 2216 | struct il3945_rxon_cmd *active_rxon = |
c8b03958 | 2217 | (struct il3945_rxon_cmd *)(&il->active); |
4bc85c13 | 2218 | |
c8b03958 | 2219 | il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
4bc85c13 WYG |
2220 | active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
2221 | } else { | |
2222 | /* Initialize our rx_config data */ | |
83007196 | 2223 | il_connection_init_rx_config(il); |
4bc85c13 WYG |
2224 | } |
2225 | ||
2226 | /* Configure Bluetooth device coexistence support */ | |
46bc8d4b | 2227 | il_send_bt_config(il); |
4bc85c13 | 2228 | |
a6766ccd | 2229 | set_bit(S_READY, &il->status); |
4bc85c13 WYG |
2230 | |
2231 | /* Configure the adapter for unassociated operation */ | |
83007196 | 2232 | il3945_commit_rxon(il); |
4bc85c13 | 2233 | |
46bc8d4b | 2234 | il3945_reg_txpower_periodic(il); |
4bc85c13 | 2235 | |
58de00a4 | 2236 | D_INFO("ALIVE processing complete.\n"); |
46bc8d4b | 2237 | wake_up(&il->wait_command_queue); |
4bc85c13 WYG |
2238 | |
2239 | return; | |
2240 | ||
e7392364 | 2241 | restart: |
46bc8d4b | 2242 | queue_work(il->workqueue, &il->restart); |
4bc85c13 WYG |
2243 | } |
2244 | ||
46bc8d4b | 2245 | static void il3945_cancel_deferred_work(struct il_priv *il); |
4bc85c13 | 2246 | |
e7392364 SG |
2247 | static void |
2248 | __il3945_down(struct il_priv *il) | |
4bc85c13 WYG |
2249 | { |
2250 | unsigned long flags; | |
2251 | int exit_pending; | |
2252 | ||
58de00a4 | 2253 | D_INFO(DRV_NAME " is going down\n"); |
4bc85c13 | 2254 | |
46bc8d4b | 2255 | il_scan_cancel_timeout(il, 200); |
4bc85c13 | 2256 | |
a6766ccd | 2257 | exit_pending = test_and_set_bit(S_EXIT_PENDING, &il->status); |
4bc85c13 | 2258 | |
a6766ccd | 2259 | /* Stop TX queues watchdog. We need to have S_EXIT_PENDING bit set |
4bc85c13 | 2260 | * to prevent rearm timer */ |
46bc8d4b | 2261 | del_timer_sync(&il->watchdog); |
4bc85c13 WYG |
2262 | |
2263 | /* Station information will now be cleared in device */ | |
83007196 | 2264 | il_clear_ucode_stations(il); |
46bc8d4b SG |
2265 | il_dealloc_bcast_stations(il); |
2266 | il_clear_driver_stations(il); | |
4bc85c13 WYG |
2267 | |
2268 | /* Unblock any waiting calls */ | |
46bc8d4b | 2269 | wake_up_all(&il->wait_command_queue); |
4bc85c13 WYG |
2270 | |
2271 | /* Wipe out the EXIT_PENDING status bit if we are not actually | |
2272 | * exiting the module */ | |
2273 | if (!exit_pending) | |
a6766ccd | 2274 | clear_bit(S_EXIT_PENDING, &il->status); |
4bc85c13 WYG |
2275 | |
2276 | /* stop and reset the on-board processor */ | |
841b2cca | 2277 | _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
4bc85c13 WYG |
2278 | |
2279 | /* tell the device to stop sending interrupts */ | |
46bc8d4b SG |
2280 | spin_lock_irqsave(&il->lock, flags); |
2281 | il_disable_interrupts(il); | |
2282 | spin_unlock_irqrestore(&il->lock, flags); | |
2283 | il3945_synchronize_irq(il); | |
4bc85c13 | 2284 | |
46bc8d4b SG |
2285 | if (il->mac80211_registered) |
2286 | ieee80211_stop_queues(il->hw); | |
4bc85c13 | 2287 | |
e2ebc833 | 2288 | /* If we have not previously called il3945_init() then |
4bc85c13 | 2289 | * clear all bits but the RF Kill bits and return */ |
46bc8d4b | 2290 | if (!il_is_init(il)) { |
e7392364 | 2291 | il->status = |
bc269a8e | 2292 | test_bit(S_RFKILL, &il->status) << S_RFKILL | |
c37281a0 | 2293 | test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | |
e7392364 | 2294 | test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; |
4bc85c13 WYG |
2295 | goto exit; |
2296 | } | |
2297 | ||
2298 | /* ...otherwise clear out all the status bits but the RF Kill | |
2299 | * bit and continue taking the NIC down. */ | |
e7392364 | 2300 | il->status &= |
bc269a8e | 2301 | test_bit(S_RFKILL, &il->status) << S_RFKILL | |
c37281a0 SG |
2302 | test_bit(S_GEO_CONFIGURED, &il->status) << S_GEO_CONFIGURED | |
2303 | test_bit(S_FW_ERROR, &il->status) << S_FW_ERROR | | |
e7392364 | 2304 | test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; |
4bc85c13 | 2305 | |
775ed8ab SG |
2306 | /* |
2307 | * We disabled and synchronized interrupt, and priv->mutex is taken, so | |
2308 | * here is the only thread which will program device registers, but | |
2309 | * still have lockdep assertions, so we are taking reg_lock. | |
2310 | */ | |
2311 | spin_lock_irq(&il->reg_lock); | |
2312 | /* FIXME: il_grab_nic_access if rfkill is off ? */ | |
2313 | ||
46bc8d4b SG |
2314 | il3945_hw_txq_ctx_stop(il); |
2315 | il3945_hw_rxq_stop(il); | |
4bc85c13 | 2316 | /* Power-down device's busmaster DMA clocks */ |
775ed8ab | 2317 | _il_wr_prph(il, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); |
4bc85c13 | 2318 | udelay(5); |
4bc85c13 | 2319 | /* Stop the device, and put it in low power state */ |
775ed8ab SG |
2320 | _il_apm_stop(il); |
2321 | ||
2322 | spin_unlock_irq(&il->reg_lock); | |
4bc85c13 | 2323 | |
775ed8ab | 2324 | il3945_hw_txq_ctx_free(il); |
e7392364 | 2325 | exit: |
46bc8d4b | 2326 | memset(&il->card_alive, 0, sizeof(struct il_alive_resp)); |
4bc85c13 | 2327 | |
46bc8d4b SG |
2328 | if (il->beacon_skb) |
2329 | dev_kfree_skb(il->beacon_skb); | |
2330 | il->beacon_skb = NULL; | |
4bc85c13 WYG |
2331 | |
2332 | /* clear out any free frames */ | |
46bc8d4b | 2333 | il3945_clear_free_frames(il); |
4bc85c13 WYG |
2334 | } |
2335 | ||
e7392364 SG |
2336 | static void |
2337 | il3945_down(struct il_priv *il) | |
4bc85c13 | 2338 | { |
46bc8d4b SG |
2339 | mutex_lock(&il->mutex); |
2340 | __il3945_down(il); | |
2341 | mutex_unlock(&il->mutex); | |
4bc85c13 | 2342 | |
46bc8d4b | 2343 | il3945_cancel_deferred_work(il); |
4bc85c13 WYG |
2344 | } |
2345 | ||
2346 | #define MAX_HW_RESTARTS 5 | |
2347 | ||
e7392364 SG |
2348 | static int |
2349 | il3945_alloc_bcast_station(struct il_priv *il) | |
4bc85c13 | 2350 | { |
4bc85c13 WYG |
2351 | unsigned long flags; |
2352 | u8 sta_id; | |
2353 | ||
46bc8d4b | 2354 | spin_lock_irqsave(&il->sta_lock, flags); |
83007196 | 2355 | sta_id = il_prep_station(il, il_bcast_addr, false, NULL); |
e2ebc833 | 2356 | if (sta_id == IL_INVALID_STATION) { |
9406f797 | 2357 | IL_ERR("Unable to prepare broadcast station\n"); |
46bc8d4b | 2358 | spin_unlock_irqrestore(&il->sta_lock, flags); |
4bc85c13 WYG |
2359 | |
2360 | return -EINVAL; | |
2361 | } | |
2362 | ||
46bc8d4b SG |
2363 | il->stations[sta_id].used |= IL_STA_DRIVER_ACTIVE; |
2364 | il->stations[sta_id].used |= IL_STA_BCAST; | |
2365 | spin_unlock_irqrestore(&il->sta_lock, flags); | |
4bc85c13 WYG |
2366 | |
2367 | return 0; | |
2368 | } | |
2369 | ||
e7392364 SG |
2370 | static int |
2371 | __il3945_up(struct il_priv *il) | |
4bc85c13 WYG |
2372 | { |
2373 | int rc, i; | |
2374 | ||
46bc8d4b | 2375 | rc = il3945_alloc_bcast_station(il); |
4bc85c13 WYG |
2376 | if (rc) |
2377 | return rc; | |
2378 | ||
a6766ccd | 2379 | if (test_bit(S_EXIT_PENDING, &il->status)) { |
9406f797 | 2380 | IL_WARN("Exit pending; will not bring the NIC up\n"); |
4bc85c13 WYG |
2381 | return -EIO; |
2382 | } | |
2383 | ||
46bc8d4b | 2384 | if (!il->ucode_data_backup.v_addr || !il->ucode_data.v_addr) { |
9406f797 | 2385 | IL_ERR("ucode not available for device bring up\n"); |
4bc85c13 WYG |
2386 | return -EIO; |
2387 | } | |
2388 | ||
2389 | /* If platform's RF_KILL switch is NOT set to KILL */ | |
e7392364 | 2390 | if (_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW) |
bc269a8e | 2391 | clear_bit(S_RFKILL, &il->status); |
4bc85c13 | 2392 | else { |
bc269a8e | 2393 | set_bit(S_RFKILL, &il->status); |
5f5deff3 | 2394 | return -ERFKILL; |
4bc85c13 WYG |
2395 | } |
2396 | ||
841b2cca | 2397 | _il_wr(il, CSR_INT, 0xFFFFFFFF); |
4bc85c13 | 2398 | |
46bc8d4b | 2399 | rc = il3945_hw_nic_init(il); |
4bc85c13 | 2400 | if (rc) { |
9406f797 | 2401 | IL_ERR("Unable to int nic\n"); |
4bc85c13 WYG |
2402 | return rc; |
2403 | } | |
2404 | ||
2405 | /* make sure rfkill handshake bits are cleared */ | |
841b2cca | 2406 | _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
e7392364 | 2407 | _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); |
4bc85c13 WYG |
2408 | |
2409 | /* clear (again), then enable host interrupts */ | |
841b2cca | 2410 | _il_wr(il, CSR_INT, 0xFFFFFFFF); |
46bc8d4b | 2411 | il_enable_interrupts(il); |
4bc85c13 WYG |
2412 | |
2413 | /* really make sure rfkill handshake bits are cleared */ | |
841b2cca SG |
2414 | _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); |
2415 | _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL); | |
4bc85c13 WYG |
2416 | |
2417 | /* Copy original ucode data image from disk into backup cache. | |
2418 | * This will be used to initialize the on-board processor's | |
2419 | * data SRAM for a clean start when the runtime program first loads. */ | |
46bc8d4b SG |
2420 | memcpy(il->ucode_data_backup.v_addr, il->ucode_data.v_addr, |
2421 | il->ucode_data.len); | |
4bc85c13 WYG |
2422 | |
2423 | /* We return success when we resume from suspend and rf_kill is on. */ | |
bc269a8e | 2424 | if (test_bit(S_RFKILL, &il->status)) |
4bc85c13 WYG |
2425 | return 0; |
2426 | ||
2427 | for (i = 0; i < MAX_HW_RESTARTS; i++) { | |
2428 | ||
2429 | /* load bootstrap state machine, | |
2430 | * load bootstrap program into processor's memory, | |
2431 | * prepare to load the "initialize" uCode */ | |
1600b875 | 2432 | rc = il->ops->load_ucode(il); |
4bc85c13 WYG |
2433 | |
2434 | if (rc) { | |
e7392364 | 2435 | IL_ERR("Unable to set up bootstrap uCode: %d\n", rc); |
4bc85c13 WYG |
2436 | continue; |
2437 | } | |
2438 | ||
2439 | /* start card; "initialize" will load runtime ucode */ | |
46bc8d4b | 2440 | il3945_nic_start(il); |
4bc85c13 | 2441 | |
58de00a4 | 2442 | D_INFO(DRV_NAME " is coming up\n"); |
4bc85c13 WYG |
2443 | |
2444 | return 0; | |
2445 | } | |
2446 | ||
a6766ccd | 2447 | set_bit(S_EXIT_PENDING, &il->status); |
46bc8d4b | 2448 | __il3945_down(il); |
a6766ccd | 2449 | clear_bit(S_EXIT_PENDING, &il->status); |
4bc85c13 WYG |
2450 | |
2451 | /* tried to restart and config the device for as long as our | |
2452 | * patience could withstand */ | |
9406f797 | 2453 | IL_ERR("Unable to initialize device after %d attempts.\n", i); |
4bc85c13 WYG |
2454 | return -EIO; |
2455 | } | |
2456 | ||
4bc85c13 WYG |
2457 | /***************************************************************************** |
2458 | * | |
2459 | * Workqueue callbacks | |
2460 | * | |
2461 | *****************************************************************************/ | |
2462 | ||
e7392364 SG |
2463 | static void |
2464 | il3945_bg_init_alive_start(struct work_struct *data) | |
4bc85c13 | 2465 | { |
46bc8d4b | 2466 | struct il_priv *il = |
e2ebc833 | 2467 | container_of(data, struct il_priv, init_alive_start.work); |
4bc85c13 | 2468 | |
46bc8d4b | 2469 | mutex_lock(&il->mutex); |
a6766ccd | 2470 | if (test_bit(S_EXIT_PENDING, &il->status)) |
28a6e577 | 2471 | goto out; |
4bc85c13 | 2472 | |
46bc8d4b | 2473 | il3945_init_alive_start(il); |
28a6e577 | 2474 | out: |
46bc8d4b | 2475 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2476 | } |
2477 | ||
e7392364 SG |
2478 | static void |
2479 | il3945_bg_alive_start(struct work_struct *data) | |
4bc85c13 | 2480 | { |
46bc8d4b | 2481 | struct il_priv *il = |
e2ebc833 | 2482 | container_of(data, struct il_priv, alive_start.work); |
4bc85c13 | 2483 | |
46bc8d4b | 2484 | mutex_lock(&il->mutex); |
210787e8 | 2485 | if (test_bit(S_EXIT_PENDING, &il->status) || il->txq == NULL) |
28a6e577 | 2486 | goto out; |
4bc85c13 | 2487 | |
46bc8d4b | 2488 | il3945_alive_start(il); |
28a6e577 | 2489 | out: |
46bc8d4b | 2490 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2491 | } |
2492 | ||
2493 | /* | |
2494 | * 3945 cannot interrupt driver when hardware rf kill switch toggles; | |
2495 | * driver must poll CSR_GP_CNTRL_REG register for change. This register | |
2496 | * *is* readable even when device has been SW_RESET into low power mode | |
2497 | * (e.g. during RF KILL). | |
2498 | */ | |
e7392364 SG |
2499 | static void |
2500 | il3945_rfkill_poll(struct work_struct *data) | |
4bc85c13 | 2501 | { |
46bc8d4b | 2502 | struct il_priv *il = |
e2ebc833 | 2503 | container_of(data, struct il_priv, _3945.rfkill_poll.work); |
bc269a8e | 2504 | bool old_rfkill = test_bit(S_RFKILL, &il->status); |
e7392364 SG |
2505 | bool new_rfkill = |
2506 | !(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW); | |
4bc85c13 WYG |
2507 | |
2508 | if (new_rfkill != old_rfkill) { | |
2509 | if (new_rfkill) | |
bc269a8e | 2510 | set_bit(S_RFKILL, &il->status); |
4bc85c13 | 2511 | else |
bc269a8e | 2512 | clear_bit(S_RFKILL, &il->status); |
4bc85c13 | 2513 | |
46bc8d4b | 2514 | wiphy_rfkill_set_hw_state(il->hw->wiphy, new_rfkill); |
4bc85c13 | 2515 | |
58de00a4 | 2516 | D_RF_KILL("RF_KILL bit toggled to %s.\n", |
e7392364 | 2517 | new_rfkill ? "disable radio" : "enable radio"); |
4bc85c13 WYG |
2518 | } |
2519 | ||
2520 | /* Keep this running, even if radio now enabled. This will be | |
2521 | * cancelled in mac_start() if system decides to start again */ | |
46bc8d4b | 2522 | queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, |
4bc85c13 WYG |
2523 | round_jiffies_relative(2 * HZ)); |
2524 | ||
2525 | } | |
2526 | ||
e7392364 SG |
2527 | int |
2528 | il3945_request_scan(struct il_priv *il, struct ieee80211_vif *vif) | |
4bc85c13 | 2529 | { |
e2ebc833 | 2530 | struct il_host_cmd cmd = { |
4d69c752 | 2531 | .id = C_SCAN, |
e2ebc833 | 2532 | .len = sizeof(struct il3945_scan_cmd), |
4bc85c13 WYG |
2533 | .flags = CMD_SIZE_HUGE, |
2534 | }; | |
e2ebc833 | 2535 | struct il3945_scan_cmd *scan; |
4bc85c13 WYG |
2536 | u8 n_probes = 0; |
2537 | enum ieee80211_band band; | |
2538 | bool is_active = false; | |
2539 | int ret; | |
dd6d2a8a | 2540 | u16 len; |
4bc85c13 | 2541 | |
46bc8d4b | 2542 | lockdep_assert_held(&il->mutex); |
4bc85c13 | 2543 | |
46bc8d4b | 2544 | if (!il->scan_cmd) { |
e7392364 SG |
2545 | il->scan_cmd = |
2546 | kmalloc(sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE, | |
2547 | GFP_KERNEL); | |
46bc8d4b | 2548 | if (!il->scan_cmd) { |
58de00a4 | 2549 | D_SCAN("Fail to allocate scan memory\n"); |
4bc85c13 WYG |
2550 | return -ENOMEM; |
2551 | } | |
2552 | } | |
46bc8d4b | 2553 | scan = il->scan_cmd; |
e2ebc833 | 2554 | memset(scan, 0, sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE); |
4bc85c13 | 2555 | |
e2ebc833 SG |
2556 | scan->quiet_plcp_th = IL_PLCP_QUIET_THRESH; |
2557 | scan->quiet_time = IL_ACTIVE_QUIET_TIME; | |
4bc85c13 | 2558 | |
7c2cde2e | 2559 | if (il_is_associated(il)) { |
dd6d2a8a | 2560 | u16 interval; |
4bc85c13 WYG |
2561 | u32 extra; |
2562 | u32 suspend_time = 100; | |
2563 | u32 scan_suspend_time = 100; | |
2564 | ||
58de00a4 | 2565 | D_INFO("Scanning while associated...\n"); |
4bc85c13 | 2566 | |
dd6d2a8a | 2567 | interval = vif->bss_conf.beacon_int; |
4bc85c13 WYG |
2568 | |
2569 | scan->suspend_time = 0; | |
2570 | scan->max_out_time = cpu_to_le32(200 * 1024); | |
2571 | if (!interval) | |
2572 | interval = suspend_time; | |
2573 | /* | |
2574 | * suspend time format: | |
2575 | * 0-19: beacon interval in usec (time before exec.) | |
2576 | * 20-23: 0 | |
2577 | * 24-31: number of beacons (suspend between channels) | |
2578 | */ | |
2579 | ||
2580 | extra = (suspend_time / interval) << 24; | |
e7392364 SG |
2581 | scan_suspend_time = |
2582 | 0xFF0FFFFF & (extra | ((suspend_time % interval) * 1024)); | |
4bc85c13 WYG |
2583 | |
2584 | scan->suspend_time = cpu_to_le32(scan_suspend_time); | |
58de00a4 | 2585 | D_SCAN("suspend_time 0x%X beacon interval %d\n", |
e7392364 | 2586 | scan_suspend_time, interval); |
4bc85c13 WYG |
2587 | } |
2588 | ||
46bc8d4b | 2589 | if (il->scan_request->n_ssids) { |
4bc85c13 | 2590 | int i, p = 0; |
58de00a4 | 2591 | D_SCAN("Kicking off active scan\n"); |
46bc8d4b | 2592 | for (i = 0; i < il->scan_request->n_ssids; i++) { |
4bc85c13 | 2593 | /* always does wildcard anyway */ |
46bc8d4b | 2594 | if (!il->scan_request->ssids[i].ssid_len) |
4bc85c13 WYG |
2595 | continue; |
2596 | scan->direct_scan[p].id = WLAN_EID_SSID; | |
2597 | scan->direct_scan[p].len = | |
e7392364 | 2598 | il->scan_request->ssids[i].ssid_len; |
4bc85c13 | 2599 | memcpy(scan->direct_scan[p].ssid, |
46bc8d4b SG |
2600 | il->scan_request->ssids[i].ssid, |
2601 | il->scan_request->ssids[i].ssid_len); | |
4bc85c13 WYG |
2602 | n_probes++; |
2603 | p++; | |
2604 | } | |
2605 | is_active = true; | |
2606 | } else | |
58de00a4 | 2607 | D_SCAN("Kicking off passive scan.\n"); |
4bc85c13 WYG |
2608 | |
2609 | /* We don't build a direct scan probe request; the uCode will do | |
2610 | * that based on the direct_mask added to each channel entry */ | |
2611 | scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; | |
b16db50a | 2612 | scan->tx_cmd.sta_id = il->hw_params.bcast_id; |
4bc85c13 WYG |
2613 | scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
2614 | ||
2615 | /* flags + rate selection */ | |
2616 | ||
46bc8d4b | 2617 | switch (il->scan_band) { |
4bc85c13 WYG |
2618 | case IEEE80211_BAND_2GHZ: |
2619 | scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; | |
2eb05816 | 2620 | scan->tx_cmd.rate = RATE_1M_PLCP; |
4bc85c13 WYG |
2621 | band = IEEE80211_BAND_2GHZ; |
2622 | break; | |
2623 | case IEEE80211_BAND_5GHZ: | |
2eb05816 | 2624 | scan->tx_cmd.rate = RATE_6M_PLCP; |
4bc85c13 WYG |
2625 | band = IEEE80211_BAND_5GHZ; |
2626 | break; | |
2627 | default: | |
9406f797 | 2628 | IL_WARN("Invalid scan band\n"); |
4bc85c13 WYG |
2629 | return -EIO; |
2630 | } | |
2631 | ||
2632 | /* | |
68acc4af SG |
2633 | * If active scaning is requested but a certain channel is marked |
2634 | * passive, we can do active scanning if we detect transmissions. For | |
2635 | * passive only scanning disable switching to active on any channel. | |
4bc85c13 | 2636 | */ |
e7392364 | 2637 | scan->good_CRC_th = |
68acc4af | 2638 | is_active ? IL_GOOD_CRC_TH_DEFAULT : IL_GOOD_CRC_TH_NEVER; |
e7392364 SG |
2639 | |
2640 | len = | |
2641 | il_fill_probe_req(il, (struct ieee80211_mgmt *)scan->data, | |
2642 | vif->addr, il->scan_request->ie, | |
2643 | il->scan_request->ie_len, | |
2644 | IL_MAX_SCAN_SIZE - sizeof(*scan)); | |
dd6d2a8a SG |
2645 | scan->tx_cmd.len = cpu_to_le16(len); |
2646 | ||
4bc85c13 | 2647 | /* select Rx antennas */ |
46bc8d4b | 2648 | scan->flags |= il3945_get_antenna_flags(il); |
4bc85c13 | 2649 | |
e7392364 SG |
2650 | scan->channel_count = |
2651 | il3945_get_channels_for_scan(il, band, is_active, n_probes, | |
2652 | (void *)&scan->data[len], vif); | |
4bc85c13 | 2653 | if (scan->channel_count == 0) { |
58de00a4 | 2654 | D_SCAN("channel count %d\n", scan->channel_count); |
4bc85c13 WYG |
2655 | return -EIO; |
2656 | } | |
2657 | ||
e7392364 SG |
2658 | cmd.len += |
2659 | le16_to_cpu(scan->tx_cmd.len) + | |
e2ebc833 | 2660 | scan->channel_count * sizeof(struct il3945_scan_channel); |
4bc85c13 WYG |
2661 | cmd.data = scan; |
2662 | scan->len = cpu_to_le16(cmd.len); | |
2663 | ||
a6766ccd | 2664 | set_bit(S_SCAN_HW, &il->status); |
46bc8d4b | 2665 | ret = il_send_cmd_sync(il, &cmd); |
4bc85c13 | 2666 | if (ret) |
a6766ccd | 2667 | clear_bit(S_SCAN_HW, &il->status); |
4bc85c13 WYG |
2668 | return ret; |
2669 | } | |
2670 | ||
e7392364 SG |
2671 | void |
2672 | il3945_post_scan(struct il_priv *il) | |
4bc85c13 | 2673 | { |
4bc85c13 WYG |
2674 | /* |
2675 | * Since setting the RXON may have been deferred while | |
2676 | * performing the scan, fire one off if needed | |
2677 | */ | |
c8b03958 | 2678 | if (memcmp(&il->staging, &il->active, sizeof(il->staging))) |
83007196 | 2679 | il3945_commit_rxon(il); |
4bc85c13 WYG |
2680 | } |
2681 | ||
e7392364 SG |
2682 | static void |
2683 | il3945_bg_restart(struct work_struct *data) | |
4bc85c13 | 2684 | { |
46bc8d4b | 2685 | struct il_priv *il = container_of(data, struct il_priv, restart); |
4bc85c13 | 2686 | |
a6766ccd | 2687 | if (test_bit(S_EXIT_PENDING, &il->status)) |
4bc85c13 WYG |
2688 | return; |
2689 | ||
a6766ccd | 2690 | if (test_and_clear_bit(S_FW_ERROR, &il->status)) { |
46bc8d4b | 2691 | mutex_lock(&il->mutex); |
46bc8d4b SG |
2692 | il->is_open = 0; |
2693 | mutex_unlock(&il->mutex); | |
2694 | il3945_down(il); | |
2695 | ieee80211_restart_hw(il->hw); | |
4bc85c13 | 2696 | } else { |
46bc8d4b | 2697 | il3945_down(il); |
4bc85c13 | 2698 | |
46bc8d4b | 2699 | mutex_lock(&il->mutex); |
a6766ccd | 2700 | if (test_bit(S_EXIT_PENDING, &il->status)) { |
46bc8d4b | 2701 | mutex_unlock(&il->mutex); |
4bc85c13 | 2702 | return; |
28a6e577 | 2703 | } |
4bc85c13 | 2704 | |
46bc8d4b SG |
2705 | __il3945_up(il); |
2706 | mutex_unlock(&il->mutex); | |
4bc85c13 WYG |
2707 | } |
2708 | } | |
2709 | ||
e7392364 SG |
2710 | static void |
2711 | il3945_bg_rx_replenish(struct work_struct *data) | |
4bc85c13 | 2712 | { |
e7392364 | 2713 | struct il_priv *il = container_of(data, struct il_priv, rx_replenish); |
4bc85c13 | 2714 | |
46bc8d4b | 2715 | mutex_lock(&il->mutex); |
a6766ccd | 2716 | if (test_bit(S_EXIT_PENDING, &il->status)) |
28a6e577 | 2717 | goto out; |
4bc85c13 | 2718 | |
46bc8d4b | 2719 | il3945_rx_replenish(il); |
28a6e577 | 2720 | out: |
46bc8d4b | 2721 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2722 | } |
2723 | ||
e7392364 SG |
2724 | void |
2725 | il3945_post_associate(struct il_priv *il) | |
4bc85c13 WYG |
2726 | { |
2727 | int rc = 0; | |
2728 | struct ieee80211_conf *conf = NULL; | |
4bc85c13 | 2729 | |
83007196 | 2730 | if (!il->vif || !il->is_open) |
4bc85c13 WYG |
2731 | return; |
2732 | ||
83007196 | 2733 | D_ASSOC("Associated as %d to: %pM\n", il->vif->bss_conf.aid, |
c8b03958 | 2734 | il->active.bssid_addr); |
4bc85c13 | 2735 | |
a6766ccd | 2736 | if (test_bit(S_EXIT_PENDING, &il->status)) |
4bc85c13 WYG |
2737 | return; |
2738 | ||
46bc8d4b | 2739 | il_scan_cancel_timeout(il, 200); |
4bc85c13 | 2740 | |
6278ddab | 2741 | conf = &il->hw->conf; |
4bc85c13 | 2742 | |
c8b03958 | 2743 | il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
83007196 | 2744 | il3945_commit_rxon(il); |
4bc85c13 | 2745 | |
83007196 | 2746 | rc = il_send_rxon_timing(il); |
4bc85c13 | 2747 | if (rc) |
e7392364 | 2748 | IL_WARN("C_RXON_TIMING failed - " "Attempting to continue.\n"); |
4bc85c13 | 2749 | |
c8b03958 | 2750 | il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
4bc85c13 | 2751 | |
83007196 | 2752 | il->staging.assoc_id = cpu_to_le16(il->vif->bss_conf.aid); |
4bc85c13 | 2753 | |
83007196 SG |
2754 | D_ASSOC("assoc id %d beacon interval %d\n", il->vif->bss_conf.aid, |
2755 | il->vif->bss_conf.beacon_int); | |
4bc85c13 | 2756 | |
83007196 | 2757 | if (il->vif->bss_conf.use_short_preamble) |
c8b03958 | 2758 | il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
4bc85c13 | 2759 | else |
c8b03958 | 2760 | il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
4bc85c13 | 2761 | |
c8b03958 | 2762 | if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { |
83007196 | 2763 | if (il->vif->bss_conf.use_short_slot) |
c8b03958 | 2764 | il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
4bc85c13 | 2765 | else |
c8b03958 | 2766 | il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
4bc85c13 WYG |
2767 | } |
2768 | ||
83007196 | 2769 | il3945_commit_rxon(il); |
4bc85c13 | 2770 | |
83007196 | 2771 | switch (il->vif->type) { |
4bc85c13 | 2772 | case NL80211_IFTYPE_STATION: |
46bc8d4b | 2773 | il3945_rate_scale_init(il->hw, IL_AP_ID); |
4bc85c13 WYG |
2774 | break; |
2775 | case NL80211_IFTYPE_ADHOC: | |
46bc8d4b | 2776 | il3945_send_beacon_cmd(il); |
4bc85c13 WYG |
2777 | break; |
2778 | default: | |
e7392364 | 2779 | IL_ERR("%s Should not be called in %d mode\n", __func__, |
83007196 | 2780 | il->vif->type); |
4bc85c13 WYG |
2781 | break; |
2782 | } | |
2783 | } | |
2784 | ||
2785 | /***************************************************************************** | |
2786 | * | |
2787 | * mac80211 entry point functions | |
2788 | * | |
2789 | *****************************************************************************/ | |
2790 | ||
2791 | #define UCODE_READY_TIMEOUT (2 * HZ) | |
2792 | ||
e7392364 SG |
2793 | static int |
2794 | il3945_mac_start(struct ieee80211_hw *hw) | |
4bc85c13 | 2795 | { |
46bc8d4b | 2796 | struct il_priv *il = hw->priv; |
4bc85c13 WYG |
2797 | int ret; |
2798 | ||
4bc85c13 | 2799 | /* we should be verifying the device is ready to be opened */ |
46bc8d4b | 2800 | mutex_lock(&il->mutex); |
9ce7b73c | 2801 | D_MAC80211("enter\n"); |
4bc85c13 WYG |
2802 | |
2803 | /* fetch ucode file from disk, alloc and copy to bus-master buffers ... | |
2804 | * ucode filename and max sizes are card-specific. */ | |
2805 | ||
46bc8d4b SG |
2806 | if (!il->ucode_code.len) { |
2807 | ret = il3945_read_ucode(il); | |
4bc85c13 | 2808 | if (ret) { |
9406f797 | 2809 | IL_ERR("Could not read microcode: %d\n", ret); |
46bc8d4b | 2810 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2811 | goto out_release_irq; |
2812 | } | |
2813 | } | |
2814 | ||
46bc8d4b | 2815 | ret = __il3945_up(il); |
4bc85c13 | 2816 | |
46bc8d4b | 2817 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2818 | |
2819 | if (ret) | |
2820 | goto out_release_irq; | |
2821 | ||
58de00a4 | 2822 | D_INFO("Start UP work.\n"); |
4bc85c13 WYG |
2823 | |
2824 | /* Wait for START_ALIVE from ucode. Otherwise callbacks from | |
2825 | * mac80211 will not be run successfully. */ | |
46bc8d4b | 2826 | ret = wait_event_timeout(il->wait_command_queue, |
e7392364 SG |
2827 | test_bit(S_READY, &il->status), |
2828 | UCODE_READY_TIMEOUT); | |
4bc85c13 | 2829 | if (!ret) { |
a6766ccd | 2830 | if (!test_bit(S_READY, &il->status)) { |
e7392364 SG |
2831 | IL_ERR("Wait for START_ALIVE timeout after %dms.\n", |
2832 | jiffies_to_msecs(UCODE_READY_TIMEOUT)); | |
4bc85c13 WYG |
2833 | ret = -ETIMEDOUT; |
2834 | goto out_release_irq; | |
2835 | } | |
2836 | } | |
2837 | ||
2838 | /* ucode is running and will send rfkill notifications, | |
2839 | * no need to poll the killswitch state anymore */ | |
46bc8d4b | 2840 | cancel_delayed_work(&il->_3945.rfkill_poll); |
4bc85c13 | 2841 | |
46bc8d4b | 2842 | il->is_open = 1; |
58de00a4 | 2843 | D_MAC80211("leave\n"); |
4bc85c13 WYG |
2844 | return 0; |
2845 | ||
2846 | out_release_irq: | |
46bc8d4b | 2847 | il->is_open = 0; |
58de00a4 | 2848 | D_MAC80211("leave - failed\n"); |
4bc85c13 WYG |
2849 | return ret; |
2850 | } | |
2851 | ||
e7392364 SG |
2852 | static void |
2853 | il3945_mac_stop(struct ieee80211_hw *hw) | |
4bc85c13 | 2854 | { |
46bc8d4b | 2855 | struct il_priv *il = hw->priv; |
4bc85c13 | 2856 | |
58de00a4 | 2857 | D_MAC80211("enter\n"); |
4bc85c13 | 2858 | |
46bc8d4b | 2859 | if (!il->is_open) { |
58de00a4 | 2860 | D_MAC80211("leave - skip\n"); |
4bc85c13 WYG |
2861 | return; |
2862 | } | |
2863 | ||
46bc8d4b | 2864 | il->is_open = 0; |
4bc85c13 | 2865 | |
46bc8d4b | 2866 | il3945_down(il); |
4bc85c13 | 2867 | |
46bc8d4b | 2868 | flush_workqueue(il->workqueue); |
4bc85c13 WYG |
2869 | |
2870 | /* start polling the killswitch state again */ | |
46bc8d4b | 2871 | queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, |
4bc85c13 WYG |
2872 | round_jiffies_relative(2 * HZ)); |
2873 | ||
58de00a4 | 2874 | D_MAC80211("leave\n"); |
4bc85c13 WYG |
2875 | } |
2876 | ||
e7392364 | 2877 | static void |
36323f81 TH |
2878 | il3945_mac_tx(struct ieee80211_hw *hw, |
2879 | struct ieee80211_tx_control *control, | |
2880 | struct sk_buff *skb) | |
4bc85c13 | 2881 | { |
46bc8d4b | 2882 | struct il_priv *il = hw->priv; |
4bc85c13 | 2883 | |
58de00a4 | 2884 | D_MAC80211("enter\n"); |
4bc85c13 | 2885 | |
58de00a4 | 2886 | D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, |
e7392364 | 2887 | ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); |
4bc85c13 | 2888 | |
36323f81 | 2889 | if (il3945_tx_skb(il, control->sta, skb)) |
4bc85c13 WYG |
2890 | dev_kfree_skb_any(skb); |
2891 | ||
58de00a4 | 2892 | D_MAC80211("leave\n"); |
4bc85c13 WYG |
2893 | } |
2894 | ||
e7392364 SG |
2895 | void |
2896 | il3945_config_ap(struct il_priv *il) | |
4bc85c13 | 2897 | { |
83007196 | 2898 | struct ieee80211_vif *vif = il->vif; |
4bc85c13 WYG |
2899 | int rc = 0; |
2900 | ||
a6766ccd | 2901 | if (test_bit(S_EXIT_PENDING, &il->status)) |
4bc85c13 WYG |
2902 | return; |
2903 | ||
2904 | /* The following should be done only at AP bring up */ | |
7c2cde2e | 2905 | if (!(il_is_associated(il))) { |
4bc85c13 WYG |
2906 | |
2907 | /* RXON - unassoc (to set timing command) */ | |
c8b03958 | 2908 | il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
83007196 | 2909 | il3945_commit_rxon(il); |
4bc85c13 WYG |
2910 | |
2911 | /* RXON Timing */ | |
83007196 | 2912 | rc = il_send_rxon_timing(il); |
4bc85c13 | 2913 | if (rc) |
4d69c752 | 2914 | IL_WARN("C_RXON_TIMING failed - " |
e7392364 | 2915 | "Attempting to continue.\n"); |
4bc85c13 | 2916 | |
c8b03958 | 2917 | il->staging.assoc_id = 0; |
4bc85c13 WYG |
2918 | |
2919 | if (vif->bss_conf.use_short_preamble) | |
c8b03958 | 2920 | il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; |
4bc85c13 | 2921 | else |
c8b03958 | 2922 | il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; |
4bc85c13 | 2923 | |
c8b03958 | 2924 | if (il->staging.flags & RXON_FLG_BAND_24G_MSK) { |
4bc85c13 | 2925 | if (vif->bss_conf.use_short_slot) |
c8b03958 | 2926 | il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; |
4bc85c13 | 2927 | else |
c8b03958 | 2928 | il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; |
4bc85c13 WYG |
2929 | } |
2930 | /* restore RXON assoc */ | |
c8b03958 | 2931 | il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
83007196 | 2932 | il3945_commit_rxon(il); |
4bc85c13 | 2933 | } |
46bc8d4b | 2934 | il3945_send_beacon_cmd(il); |
4bc85c13 WYG |
2935 | } |
2936 | ||
e7392364 SG |
2937 | static int |
2938 | il3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
2939 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, | |
2940 | struct ieee80211_key_conf *key) | |
4bc85c13 | 2941 | { |
46bc8d4b | 2942 | struct il_priv *il = hw->priv; |
4bc85c13 | 2943 | int ret = 0; |
e2ebc833 | 2944 | u8 sta_id = IL_INVALID_STATION; |
4bc85c13 WYG |
2945 | u8 static_key; |
2946 | ||
58de00a4 | 2947 | D_MAC80211("enter\n"); |
4bc85c13 | 2948 | |
e2ebc833 | 2949 | if (il3945_mod_params.sw_crypto) { |
58de00a4 | 2950 | D_MAC80211("leave - hwcrypto disabled\n"); |
4bc85c13 WYG |
2951 | return -EOPNOTSUPP; |
2952 | } | |
2953 | ||
2954 | /* | |
2955 | * To support IBSS RSN, don't program group keys in IBSS, the | |
2956 | * hardware will then not attempt to decrypt the frames. | |
2957 | */ | |
2958 | if (vif->type == NL80211_IFTYPE_ADHOC && | |
9ce7b73c SG |
2959 | !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
2960 | D_MAC80211("leave - IBSS RSN\n"); | |
4bc85c13 | 2961 | return -EOPNOTSUPP; |
9ce7b73c | 2962 | } |
4bc85c13 | 2963 | |
7c2cde2e | 2964 | static_key = !il_is_associated(il); |
4bc85c13 WYG |
2965 | |
2966 | if (!static_key) { | |
83007196 | 2967 | sta_id = il_sta_id_or_broadcast(il, sta); |
9ce7b73c SG |
2968 | if (sta_id == IL_INVALID_STATION) { |
2969 | D_MAC80211("leave - station not found\n"); | |
4bc85c13 | 2970 | return -EINVAL; |
9ce7b73c | 2971 | } |
4bc85c13 WYG |
2972 | } |
2973 | ||
46bc8d4b SG |
2974 | mutex_lock(&il->mutex); |
2975 | il_scan_cancel_timeout(il, 100); | |
4bc85c13 WYG |
2976 | |
2977 | switch (cmd) { | |
2978 | case SET_KEY: | |
2979 | if (static_key) | |
46bc8d4b | 2980 | ret = il3945_set_static_key(il, key); |
4bc85c13 | 2981 | else |
46bc8d4b | 2982 | ret = il3945_set_dynamic_key(il, key, sta_id); |
58de00a4 | 2983 | D_MAC80211("enable hwcrypto key\n"); |
4bc85c13 WYG |
2984 | break; |
2985 | case DISABLE_KEY: | |
2986 | if (static_key) | |
46bc8d4b | 2987 | ret = il3945_remove_static_key(il); |
4bc85c13 | 2988 | else |
46bc8d4b | 2989 | ret = il3945_clear_sta_key_info(il, sta_id); |
58de00a4 | 2990 | D_MAC80211("disable hwcrypto key\n"); |
4bc85c13 WYG |
2991 | break; |
2992 | default: | |
2993 | ret = -EINVAL; | |
2994 | } | |
2995 | ||
9ce7b73c | 2996 | D_MAC80211("leave ret %d\n", ret); |
46bc8d4b | 2997 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
2998 | |
2999 | return ret; | |
3000 | } | |
3001 | ||
e7392364 SG |
3002 | static int |
3003 | il3945_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
3004 | struct ieee80211_sta *sta) | |
4bc85c13 | 3005 | { |
46bc8d4b | 3006 | struct il_priv *il = hw->priv; |
e2ebc833 | 3007 | struct il3945_sta_priv *sta_priv = (void *)sta->drv_priv; |
4bc85c13 WYG |
3008 | int ret; |
3009 | bool is_ap = vif->type == NL80211_IFTYPE_STATION; | |
3010 | u8 sta_id; | |
3011 | ||
46bc8d4b | 3012 | mutex_lock(&il->mutex); |
9ce7b73c | 3013 | D_INFO("station %pM\n", sta->addr); |
e2ebc833 | 3014 | sta_priv->common.sta_id = IL_INVALID_STATION; |
4bc85c13 | 3015 | |
83007196 | 3016 | ret = il_add_station_common(il, sta->addr, is_ap, sta, &sta_id); |
4bc85c13 | 3017 | if (ret) { |
e7392364 | 3018 | IL_ERR("Unable to add station %pM (%d)\n", sta->addr, ret); |
4bc85c13 | 3019 | /* Should we return success if return code is EEXIST ? */ |
46bc8d4b | 3020 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
3021 | return ret; |
3022 | } | |
3023 | ||
3024 | sta_priv->common.sta_id = sta_id; | |
3025 | ||
3026 | /* Initialize rate scaling */ | |
e7392364 | 3027 | D_INFO("Initializing rate scaling for station %pM\n", sta->addr); |
46bc8d4b SG |
3028 | il3945_rs_rate_init(il, sta, sta_id); |
3029 | mutex_unlock(&il->mutex); | |
4bc85c13 WYG |
3030 | |
3031 | return 0; | |
3032 | } | |
3033 | ||
e7392364 SG |
3034 | static void |
3035 | il3945_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, | |
3036 | unsigned int *total_flags, u64 multicast) | |
4bc85c13 | 3037 | { |
46bc8d4b | 3038 | struct il_priv *il = hw->priv; |
4bc85c13 | 3039 | __le32 filter_or = 0, filter_nand = 0; |
4bc85c13 WYG |
3040 | |
3041 | #define CHK(test, flag) do { \ | |
3042 | if (*total_flags & (test)) \ | |
3043 | filter_or |= (flag); \ | |
3044 | else \ | |
3045 | filter_nand |= (flag); \ | |
3046 | } while (0) | |
3047 | ||
e7392364 SG |
3048 | D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags, |
3049 | *total_flags); | |
4bc85c13 WYG |
3050 | |
3051 | CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK); | |
3052 | CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK); | |
3053 | CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); | |
3054 | ||
3055 | #undef CHK | |
3056 | ||
46bc8d4b | 3057 | mutex_lock(&il->mutex); |
4bc85c13 | 3058 | |
c8b03958 SG |
3059 | il->staging.filter_flags &= ~filter_nand; |
3060 | il->staging.filter_flags |= filter_or; | |
4bc85c13 WYG |
3061 | |
3062 | /* | |
3063 | * Not committing directly because hardware can perform a scan, | |
3064 | * but even if hw is ready, committing here breaks for some reason, | |
3065 | * we'll eventually commit the filter flags change anyway. | |
3066 | */ | |
3067 | ||
46bc8d4b | 3068 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
3069 | |
3070 | /* | |
3071 | * Receiving all multicast frames is always enabled by the | |
e2ebc833 | 3072 | * default flags setup in il_connection_init_rx_config() |
4bc85c13 WYG |
3073 | * since we currently do not support programming multicast |
3074 | * filters into the device. | |
3075 | */ | |
e7392364 SG |
3076 | *total_flags &= |
3077 | FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS | | |
3078 | FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; | |
4bc85c13 WYG |
3079 | } |
3080 | ||
4bc85c13 WYG |
3081 | /***************************************************************************** |
3082 | * | |
3083 | * sysfs attributes | |
3084 | * | |
3085 | *****************************************************************************/ | |
3086 | ||
d3175167 | 3087 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
3088 | |
3089 | /* | |
3090 | * The following adds a new attribute to the sysfs representation | |
3091 | * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/) | |
3092 | * used for controlling the debug level. | |
3093 | * | |
3094 | * See the level definitions in iwl for details. | |
3095 | * | |
3096 | * The debug_level being managed using sysfs below is a per device debug | |
3097 | * level that is used instead of the global debug level if it (the per | |
3098 | * device debug level) is set. | |
3099 | */ | |
e7392364 SG |
3100 | static ssize_t |
3101 | il3945_show_debug_level(struct device *d, struct device_attribute *attr, | |
3102 | char *buf) | |
4bc85c13 | 3103 | { |
46bc8d4b SG |
3104 | struct il_priv *il = dev_get_drvdata(d); |
3105 | return sprintf(buf, "0x%08X\n", il_get_debug_level(il)); | |
4bc85c13 | 3106 | } |
e7392364 SG |
3107 | |
3108 | static ssize_t | |
3109 | il3945_store_debug_level(struct device *d, struct device_attribute *attr, | |
3110 | const char *buf, size_t count) | |
4bc85c13 | 3111 | { |
46bc8d4b | 3112 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 WYG |
3113 | unsigned long val; |
3114 | int ret; | |
3115 | ||
27d7f477 | 3116 | ret = kstrtoul(buf, 0, &val); |
4bc85c13 | 3117 | if (ret) |
9406f797 | 3118 | IL_INFO("%s is not in hex or decimal form.\n", buf); |
288f9954 | 3119 | else |
46bc8d4b | 3120 | il->debug_level = val; |
288f9954 | 3121 | |
4bc85c13 WYG |
3122 | return strnlen(buf, count); |
3123 | } | |
3124 | ||
e7392364 SG |
3125 | static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, il3945_show_debug_level, |
3126 | il3945_store_debug_level); | |
4bc85c13 | 3127 | |
d3175167 | 3128 | #endif /* CONFIG_IWLEGACY_DEBUG */ |
4bc85c13 | 3129 | |
e7392364 SG |
3130 | static ssize_t |
3131 | il3945_show_temperature(struct device *d, struct device_attribute *attr, | |
3132 | char *buf) | |
4bc85c13 | 3133 | { |
46bc8d4b | 3134 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3135 | |
46bc8d4b | 3136 | if (!il_is_alive(il)) |
4bc85c13 WYG |
3137 | return -EAGAIN; |
3138 | ||
46bc8d4b | 3139 | return sprintf(buf, "%d\n", il3945_hw_get_temperature(il)); |
4bc85c13 WYG |
3140 | } |
3141 | ||
e2ebc833 | 3142 | static DEVICE_ATTR(temperature, S_IRUGO, il3945_show_temperature, NULL); |
4bc85c13 | 3143 | |
e7392364 SG |
3144 | static ssize_t |
3145 | il3945_show_tx_power(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 | 3146 | { |
46bc8d4b SG |
3147 | struct il_priv *il = dev_get_drvdata(d); |
3148 | return sprintf(buf, "%d\n", il->tx_power_user_lmt); | |
4bc85c13 WYG |
3149 | } |
3150 | ||
e7392364 SG |
3151 | static ssize_t |
3152 | il3945_store_tx_power(struct device *d, struct device_attribute *attr, | |
3153 | const char *buf, size_t count) | |
4bc85c13 | 3154 | { |
46bc8d4b | 3155 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 WYG |
3156 | char *p = (char *)buf; |
3157 | u32 val; | |
3158 | ||
3159 | val = simple_strtoul(p, &p, 10); | |
3160 | if (p == buf) | |
9406f797 | 3161 | IL_INFO(": %s is not in decimal form.\n", buf); |
4bc85c13 | 3162 | else |
46bc8d4b | 3163 | il3945_hw_reg_set_txpower(il, val); |
4bc85c13 WYG |
3164 | |
3165 | return count; | |
3166 | } | |
3167 | ||
e7392364 SG |
3168 | static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, il3945_show_tx_power, |
3169 | il3945_store_tx_power); | |
4bc85c13 | 3170 | |
e7392364 SG |
3171 | static ssize_t |
3172 | il3945_show_flags(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 | 3173 | { |
46bc8d4b | 3174 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3175 | |
c8b03958 | 3176 | return sprintf(buf, "0x%04X\n", il->active.flags); |
4bc85c13 WYG |
3177 | } |
3178 | ||
e7392364 SG |
3179 | static ssize_t |
3180 | il3945_store_flags(struct device *d, struct device_attribute *attr, | |
3181 | const char *buf, size_t count) | |
4bc85c13 | 3182 | { |
46bc8d4b | 3183 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3184 | u32 flags = simple_strtoul(buf, NULL, 0); |
4bc85c13 | 3185 | |
46bc8d4b | 3186 | mutex_lock(&il->mutex); |
c8b03958 | 3187 | if (le32_to_cpu(il->staging.flags) != flags) { |
4bc85c13 | 3188 | /* Cancel any currently running scans... */ |
46bc8d4b | 3189 | if (il_scan_cancel_timeout(il, 100)) |
9406f797 | 3190 | IL_WARN("Could not cancel scan.\n"); |
4bc85c13 | 3191 | else { |
e7392364 | 3192 | D_INFO("Committing rxon.flags = 0x%04X\n", flags); |
c8b03958 | 3193 | il->staging.flags = cpu_to_le32(flags); |
83007196 | 3194 | il3945_commit_rxon(il); |
4bc85c13 WYG |
3195 | } |
3196 | } | |
46bc8d4b | 3197 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
3198 | |
3199 | return count; | |
3200 | } | |
3201 | ||
e7392364 SG |
3202 | static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, il3945_show_flags, |
3203 | il3945_store_flags); | |
4bc85c13 | 3204 | |
e7392364 SG |
3205 | static ssize_t |
3206 | il3945_show_filter_flags(struct device *d, struct device_attribute *attr, | |
3207 | char *buf) | |
4bc85c13 | 3208 | { |
46bc8d4b | 3209 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3210 | |
c8b03958 | 3211 | return sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.filter_flags)); |
4bc85c13 WYG |
3212 | } |
3213 | ||
e7392364 SG |
3214 | static ssize_t |
3215 | il3945_store_filter_flags(struct device *d, struct device_attribute *attr, | |
3216 | const char *buf, size_t count) | |
4bc85c13 | 3217 | { |
46bc8d4b | 3218 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 WYG |
3219 | u32 filter_flags = simple_strtoul(buf, NULL, 0); |
3220 | ||
46bc8d4b | 3221 | mutex_lock(&il->mutex); |
c8b03958 | 3222 | if (le32_to_cpu(il->staging.filter_flags) != filter_flags) { |
4bc85c13 | 3223 | /* Cancel any currently running scans... */ |
46bc8d4b | 3224 | if (il_scan_cancel_timeout(il, 100)) |
9406f797 | 3225 | IL_WARN("Could not cancel scan.\n"); |
4bc85c13 | 3226 | else { |
e7392364 SG |
3227 | D_INFO("Committing rxon.filter_flags = " "0x%04X\n", |
3228 | filter_flags); | |
c8b03958 | 3229 | il->staging.filter_flags = cpu_to_le32(filter_flags); |
83007196 | 3230 | il3945_commit_rxon(il); |
4bc85c13 WYG |
3231 | } |
3232 | } | |
46bc8d4b | 3233 | mutex_unlock(&il->mutex); |
4bc85c13 WYG |
3234 | |
3235 | return count; | |
3236 | } | |
3237 | ||
e2ebc833 SG |
3238 | static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, il3945_show_filter_flags, |
3239 | il3945_store_filter_flags); | |
4bc85c13 | 3240 | |
e7392364 SG |
3241 | static ssize_t |
3242 | il3945_show_measurement(struct device *d, struct device_attribute *attr, | |
3243 | char *buf) | |
4bc85c13 | 3244 | { |
46bc8d4b | 3245 | struct il_priv *il = dev_get_drvdata(d); |
e2ebc833 | 3246 | struct il_spectrum_notification measure_report; |
4bc85c13 | 3247 | u32 size = sizeof(measure_report), len = 0, ofs = 0; |
1722f8e1 | 3248 | u8 *data = (u8 *) &measure_report; |
4bc85c13 WYG |
3249 | unsigned long flags; |
3250 | ||
46bc8d4b SG |
3251 | spin_lock_irqsave(&il->lock, flags); |
3252 | if (!(il->measurement_status & MEASUREMENT_READY)) { | |
3253 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 WYG |
3254 | return 0; |
3255 | } | |
46bc8d4b SG |
3256 | memcpy(&measure_report, &il->measure_report, size); |
3257 | il->measurement_status = 0; | |
3258 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 | 3259 | |
232913b5 | 3260 | while (size && PAGE_SIZE - len) { |
4bc85c13 WYG |
3261 | hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len, |
3262 | PAGE_SIZE - len, 1); | |
3263 | len = strlen(buf); | |
3264 | if (PAGE_SIZE - len) | |
3265 | buf[len++] = '\n'; | |
3266 | ||
3267 | ofs += 16; | |
3268 | size -= min(size, 16U); | |
3269 | } | |
3270 | ||
3271 | return len; | |
3272 | } | |
3273 | ||
e7392364 SG |
3274 | static ssize_t |
3275 | il3945_store_measurement(struct device *d, struct device_attribute *attr, | |
3276 | const char *buf, size_t count) | |
4bc85c13 | 3277 | { |
46bc8d4b | 3278 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3279 | struct ieee80211_measurement_params params = { |
c8b03958 | 3280 | .channel = le16_to_cpu(il->active.channel), |
46bc8d4b | 3281 | .start_time = cpu_to_le64(il->_3945.last_tsf), |
4bc85c13 WYG |
3282 | .duration = cpu_to_le16(1), |
3283 | }; | |
e2ebc833 | 3284 | u8 type = IL_MEASURE_BASIC; |
4bc85c13 WYG |
3285 | u8 buffer[32]; |
3286 | u8 channel; | |
3287 | ||
3288 | if (count) { | |
3289 | char *p = buffer; | |
407ee237 | 3290 | strlcpy(buffer, buf, sizeof(buffer)); |
4bc85c13 WYG |
3291 | channel = simple_strtoul(p, NULL, 0); |
3292 | if (channel) | |
3293 | params.channel = channel; | |
3294 | ||
3295 | p = buffer; | |
3296 | while (*p && *p != ' ') | |
3297 | p++; | |
3298 | if (*p) | |
3299 | type = simple_strtoul(p + 1, NULL, 0); | |
3300 | } | |
3301 | ||
e7392364 SG |
3302 | D_INFO("Invoking measurement of type %d on " "channel %d (for '%s')\n", |
3303 | type, params.channel, buf); | |
46bc8d4b | 3304 | il3945_get_measurement(il, ¶ms, type); |
4bc85c13 WYG |
3305 | |
3306 | return count; | |
3307 | } | |
3308 | ||
e7392364 SG |
3309 | static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, il3945_show_measurement, |
3310 | il3945_store_measurement); | |
4bc85c13 | 3311 | |
e7392364 SG |
3312 | static ssize_t |
3313 | il3945_store_retry_rate(struct device *d, struct device_attribute *attr, | |
3314 | const char *buf, size_t count) | |
4bc85c13 | 3315 | { |
46bc8d4b | 3316 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3317 | |
46bc8d4b SG |
3318 | il->retry_rate = simple_strtoul(buf, NULL, 0); |
3319 | if (il->retry_rate <= 0) | |
3320 | il->retry_rate = 1; | |
4bc85c13 WYG |
3321 | |
3322 | return count; | |
3323 | } | |
3324 | ||
e7392364 SG |
3325 | static ssize_t |
3326 | il3945_show_retry_rate(struct device *d, struct device_attribute *attr, | |
3327 | char *buf) | |
4bc85c13 | 3328 | { |
46bc8d4b SG |
3329 | struct il_priv *il = dev_get_drvdata(d); |
3330 | return sprintf(buf, "%d", il->retry_rate); | |
4bc85c13 WYG |
3331 | } |
3332 | ||
e2ebc833 SG |
3333 | static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, il3945_show_retry_rate, |
3334 | il3945_store_retry_rate); | |
4bc85c13 | 3335 | |
e7392364 SG |
3336 | static ssize_t |
3337 | il3945_show_channels(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 WYG |
3338 | { |
3339 | /* all this shit doesn't belong into sysfs anyway */ | |
3340 | return 0; | |
3341 | } | |
3342 | ||
e2ebc833 | 3343 | static DEVICE_ATTR(channels, S_IRUSR, il3945_show_channels, NULL); |
4bc85c13 | 3344 | |
e7392364 SG |
3345 | static ssize_t |
3346 | il3945_show_antenna(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 | 3347 | { |
46bc8d4b | 3348 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 | 3349 | |
46bc8d4b | 3350 | if (!il_is_alive(il)) |
4bc85c13 WYG |
3351 | return -EAGAIN; |
3352 | ||
e2ebc833 | 3353 | return sprintf(buf, "%d\n", il3945_mod_params.antenna); |
4bc85c13 WYG |
3354 | } |
3355 | ||
e7392364 SG |
3356 | static ssize_t |
3357 | il3945_store_antenna(struct device *d, struct device_attribute *attr, | |
3358 | const char *buf, size_t count) | |
4bc85c13 | 3359 | { |
46bc8d4b | 3360 | struct il_priv *il __maybe_unused = dev_get_drvdata(d); |
4bc85c13 WYG |
3361 | int ant; |
3362 | ||
3363 | if (count == 0) | |
3364 | return 0; | |
3365 | ||
3366 | if (sscanf(buf, "%1i", &ant) != 1) { | |
58de00a4 | 3367 | D_INFO("not in hex or decimal form.\n"); |
4bc85c13 WYG |
3368 | return count; |
3369 | } | |
3370 | ||
232913b5 | 3371 | if (ant >= 0 && ant <= 2) { |
58de00a4 | 3372 | D_INFO("Setting antenna select to %d.\n", ant); |
e2ebc833 | 3373 | il3945_mod_params.antenna = (enum il3945_antenna)ant; |
4bc85c13 | 3374 | } else |
58de00a4 | 3375 | D_INFO("Bad antenna select value %d.\n", ant); |
4bc85c13 | 3376 | |
4bc85c13 WYG |
3377 | return count; |
3378 | } | |
3379 | ||
e7392364 SG |
3380 | static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, il3945_show_antenna, |
3381 | il3945_store_antenna); | |
4bc85c13 | 3382 | |
e7392364 SG |
3383 | static ssize_t |
3384 | il3945_show_status(struct device *d, struct device_attribute *attr, char *buf) | |
4bc85c13 | 3385 | { |
46bc8d4b SG |
3386 | struct il_priv *il = dev_get_drvdata(d); |
3387 | if (!il_is_alive(il)) | |
4bc85c13 | 3388 | return -EAGAIN; |
46bc8d4b | 3389 | return sprintf(buf, "0x%08x\n", (int)il->status); |
4bc85c13 WYG |
3390 | } |
3391 | ||
e2ebc833 | 3392 | static DEVICE_ATTR(status, S_IRUGO, il3945_show_status, NULL); |
4bc85c13 | 3393 | |
e7392364 SG |
3394 | static ssize_t |
3395 | il3945_dump_error_log(struct device *d, struct device_attribute *attr, | |
3396 | const char *buf, size_t count) | |
4bc85c13 | 3397 | { |
46bc8d4b | 3398 | struct il_priv *il = dev_get_drvdata(d); |
4bc85c13 WYG |
3399 | char *p = (char *)buf; |
3400 | ||
3401 | if (p[0] == '1') | |
46bc8d4b | 3402 | il3945_dump_nic_error_log(il); |
4bc85c13 WYG |
3403 | |
3404 | return strnlen(buf, count); | |
3405 | } | |
3406 | ||
e2ebc833 | 3407 | static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, il3945_dump_error_log); |
4bc85c13 WYG |
3408 | |
3409 | /***************************************************************************** | |
3410 | * | |
3411 | * driver setup and tear down | |
3412 | * | |
3413 | *****************************************************************************/ | |
3414 | ||
e7392364 SG |
3415 | static void |
3416 | il3945_setup_deferred_work(struct il_priv *il) | |
4bc85c13 | 3417 | { |
46bc8d4b | 3418 | il->workqueue = create_singlethread_workqueue(DRV_NAME); |
4bc85c13 | 3419 | |
46bc8d4b | 3420 | init_waitqueue_head(&il->wait_command_queue); |
4bc85c13 | 3421 | |
46bc8d4b SG |
3422 | INIT_WORK(&il->restart, il3945_bg_restart); |
3423 | INIT_WORK(&il->rx_replenish, il3945_bg_rx_replenish); | |
3424 | INIT_DELAYED_WORK(&il->init_alive_start, il3945_bg_init_alive_start); | |
3425 | INIT_DELAYED_WORK(&il->alive_start, il3945_bg_alive_start); | |
3426 | INIT_DELAYED_WORK(&il->_3945.rfkill_poll, il3945_rfkill_poll); | |
4bc85c13 | 3427 | |
46bc8d4b | 3428 | il_setup_scan_deferred_work(il); |
4bc85c13 | 3429 | |
46bc8d4b | 3430 | il3945_hw_setup_deferred_work(il); |
4bc85c13 | 3431 | |
46bc8d4b SG |
3432 | init_timer(&il->watchdog); |
3433 | il->watchdog.data = (unsigned long)il; | |
3434 | il->watchdog.function = il_bg_watchdog; | |
4bc85c13 | 3435 | |
e7392364 SG |
3436 | tasklet_init(&il->irq_tasklet, |
3437 | (void (*)(unsigned long))il3945_irq_tasklet, | |
3438 | (unsigned long)il); | |
4bc85c13 WYG |
3439 | } |
3440 | ||
e7392364 SG |
3441 | static void |
3442 | il3945_cancel_deferred_work(struct il_priv *il) | |
4bc85c13 | 3443 | { |
46bc8d4b | 3444 | il3945_hw_cancel_deferred_work(il); |
4bc85c13 | 3445 | |
46bc8d4b SG |
3446 | cancel_delayed_work_sync(&il->init_alive_start); |
3447 | cancel_delayed_work(&il->alive_start); | |
4bc85c13 | 3448 | |
46bc8d4b | 3449 | il_cancel_scan_deferred_work(il); |
4bc85c13 WYG |
3450 | } |
3451 | ||
e2ebc833 | 3452 | static struct attribute *il3945_sysfs_entries[] = { |
4bc85c13 WYG |
3453 | &dev_attr_antenna.attr, |
3454 | &dev_attr_channels.attr, | |
3455 | &dev_attr_dump_errors.attr, | |
3456 | &dev_attr_flags.attr, | |
3457 | &dev_attr_filter_flags.attr, | |
3458 | &dev_attr_measurement.attr, | |
3459 | &dev_attr_retry_rate.attr, | |
3460 | &dev_attr_status.attr, | |
3461 | &dev_attr_temperature.attr, | |
3462 | &dev_attr_tx_power.attr, | |
d3175167 | 3463 | #ifdef CONFIG_IWLEGACY_DEBUG |
4bc85c13 WYG |
3464 | &dev_attr_debug_level.attr, |
3465 | #endif | |
3466 | NULL | |
3467 | }; | |
3468 | ||
e2ebc833 | 3469 | static struct attribute_group il3945_attribute_group = { |
4bc85c13 | 3470 | .name = NULL, /* put in device directory */ |
e2ebc833 | 3471 | .attrs = il3945_sysfs_entries, |
4bc85c13 WYG |
3472 | }; |
3473 | ||
60c46bf8 | 3474 | static struct ieee80211_ops il3945_mac_ops __read_mostly = { |
e2ebc833 SG |
3475 | .tx = il3945_mac_tx, |
3476 | .start = il3945_mac_start, | |
3477 | .stop = il3945_mac_stop, | |
3478 | .add_interface = il_mac_add_interface, | |
3479 | .remove_interface = il_mac_remove_interface, | |
3480 | .change_interface = il_mac_change_interface, | |
3481 | .config = il_mac_config, | |
3482 | .configure_filter = il3945_configure_filter, | |
3483 | .set_key = il3945_mac_set_key, | |
3484 | .conf_tx = il_mac_conf_tx, | |
3485 | .reset_tsf = il_mac_reset_tsf, | |
3486 | .bss_info_changed = il_mac_bss_info_changed, | |
3487 | .hw_scan = il_mac_hw_scan, | |
3488 | .sta_add = il3945_mac_sta_add, | |
3489 | .sta_remove = il_mac_sta_remove, | |
3490 | .tx_last_beacon = il_mac_tx_last_beacon, | |
70277f47 | 3491 | .flush = il_mac_flush, |
4bc85c13 WYG |
3492 | }; |
3493 | ||
e7392364 SG |
3494 | static int |
3495 | il3945_init_drv(struct il_priv *il) | |
4bc85c13 WYG |
3496 | { |
3497 | int ret; | |
46bc8d4b | 3498 | struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom; |
4bc85c13 | 3499 | |
46bc8d4b SG |
3500 | il->retry_rate = 1; |
3501 | il->beacon_skb = NULL; | |
4bc85c13 | 3502 | |
46bc8d4b SG |
3503 | spin_lock_init(&il->sta_lock); |
3504 | spin_lock_init(&il->hcmd_lock); | |
4bc85c13 | 3505 | |
46bc8d4b | 3506 | INIT_LIST_HEAD(&il->free_frames); |
4bc85c13 | 3507 | |
46bc8d4b | 3508 | mutex_init(&il->mutex); |
4bc85c13 | 3509 | |
46bc8d4b SG |
3510 | il->ieee_channels = NULL; |
3511 | il->ieee_rates = NULL; | |
3512 | il->band = IEEE80211_BAND_2GHZ; | |
4bc85c13 | 3513 | |
46bc8d4b SG |
3514 | il->iw_mode = NL80211_IFTYPE_STATION; |
3515 | il->missed_beacon_threshold = IL_MISSED_BEACON_THRESHOLD_DEF; | |
4bc85c13 WYG |
3516 | |
3517 | /* initialize force reset */ | |
46bc8d4b | 3518 | il->force_reset.reset_duration = IL_DELAY_NEXT_FORCE_FW_RELOAD; |
4bc85c13 | 3519 | |
4bc85c13 | 3520 | if (eeprom->version < EEPROM_3945_EEPROM_VERSION) { |
9406f797 | 3521 | IL_WARN("Unsupported EEPROM version: 0x%04X\n", |
e7392364 | 3522 | eeprom->version); |
4bc85c13 WYG |
3523 | ret = -EINVAL; |
3524 | goto err; | |
3525 | } | |
46bc8d4b | 3526 | ret = il_init_channel_map(il); |
4bc85c13 | 3527 | if (ret) { |
9406f797 | 3528 | IL_ERR("initializing regulatory failed: %d\n", ret); |
4bc85c13 WYG |
3529 | goto err; |
3530 | } | |
3531 | ||
3532 | /* Set up txpower settings in driver for all channels */ | |
46bc8d4b | 3533 | if (il3945_txpower_set_from_eeprom(il)) { |
4bc85c13 WYG |
3534 | ret = -EIO; |
3535 | goto err_free_channel_map; | |
3536 | } | |
3537 | ||
46bc8d4b | 3538 | ret = il_init_geos(il); |
4bc85c13 | 3539 | if (ret) { |
9406f797 | 3540 | IL_ERR("initializing geos failed: %d\n", ret); |
4bc85c13 WYG |
3541 | goto err_free_channel_map; |
3542 | } | |
46bc8d4b | 3543 | il3945_init_hw_rates(il, il->ieee_rates); |
4bc85c13 WYG |
3544 | |
3545 | return 0; | |
3546 | ||
3547 | err_free_channel_map: | |
46bc8d4b | 3548 | il_free_channel_map(il); |
4bc85c13 WYG |
3549 | err: |
3550 | return ret; | |
3551 | } | |
3552 | ||
d3175167 | 3553 | #define IL3945_MAX_PROBE_REQUEST 200 |
4bc85c13 | 3554 | |
e7392364 SG |
3555 | static int |
3556 | il3945_setup_mac(struct il_priv *il) | |
4bc85c13 WYG |
3557 | { |
3558 | int ret; | |
46bc8d4b | 3559 | struct ieee80211_hw *hw = il->hw; |
4bc85c13 WYG |
3560 | |
3561 | hw->rate_control_algorithm = "iwl-3945-rs"; | |
e2ebc833 SG |
3562 | hw->sta_data_size = sizeof(struct il3945_sta_priv); |
3563 | hw->vif_data_size = sizeof(struct il_vif_priv); | |
4bc85c13 WYG |
3564 | |
3565 | /* Tell mac80211 our characteristics */ | |
07db8f8f SG |
3566 | hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_SPECTRUM_MGMT | |
3567 | IEEE80211_HW_SUPPORTS_PS | IEEE80211_HW_SUPPORTS_DYNAMIC_PS; | |
4bc85c13 | 3568 | |
8c9c48d5 SG |
3569 | hw->wiphy->interface_modes = |
3570 | BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC); | |
4bc85c13 | 3571 | |
a2f73b6c LR |
3572 | hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; |
3573 | hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | | |
3574 | REGULATORY_DISABLE_BEACON_HINTS; | |
4bc85c13 | 3575 | |
07db8f8f SG |
3576 | hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; |
3577 | ||
4bc85c13 WYG |
3578 | hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945; |
3579 | /* we create the 802.11 header and a zero-length SSID element */ | |
d3175167 | 3580 | hw->wiphy->max_scan_ie_len = IL3945_MAX_PROBE_REQUEST - 24 - 2; |
4bc85c13 WYG |
3581 | |
3582 | /* Default value; 4 EDCA QOS priorities */ | |
3583 | hw->queues = 4; | |
3584 | ||
46bc8d4b SG |
3585 | if (il->bands[IEEE80211_BAND_2GHZ].n_channels) |
3586 | il->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
e7392364 | 3587 | &il->bands[IEEE80211_BAND_2GHZ]; |
4bc85c13 | 3588 | |
46bc8d4b SG |
3589 | if (il->bands[IEEE80211_BAND_5GHZ].n_channels) |
3590 | il->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
e7392364 | 3591 | &il->bands[IEEE80211_BAND_5GHZ]; |
4bc85c13 | 3592 | |
46bc8d4b | 3593 | il_leds_init(il); |
4bc85c13 | 3594 | |
46bc8d4b | 3595 | ret = ieee80211_register_hw(il->hw); |
4bc85c13 | 3596 | if (ret) { |
9406f797 | 3597 | IL_ERR("Failed to register hw (error %d)\n", ret); |
4bc85c13 WYG |
3598 | return ret; |
3599 | } | |
46bc8d4b | 3600 | il->mac80211_registered = 1; |
4bc85c13 WYG |
3601 | |
3602 | return 0; | |
3603 | } | |
3604 | ||
e7392364 SG |
3605 | static int |
3606 | il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
4bc85c13 | 3607 | { |
7c2cde2e | 3608 | int err = 0; |
46bc8d4b | 3609 | struct il_priv *il; |
4bc85c13 | 3610 | struct ieee80211_hw *hw; |
e2ebc833 SG |
3611 | struct il_cfg *cfg = (struct il_cfg *)(ent->driver_data); |
3612 | struct il3945_eeprom *eeprom; | |
4bc85c13 WYG |
3613 | unsigned long flags; |
3614 | ||
3615 | /*********************** | |
3616 | * 1. Allocating HW data | |
3617 | * ********************/ | |
3618 | ||
c39ae9fd SG |
3619 | hw = ieee80211_alloc_hw(sizeof(struct il_priv), &il3945_mac_ops); |
3620 | if (!hw) { | |
4bc85c13 WYG |
3621 | err = -ENOMEM; |
3622 | goto out; | |
3623 | } | |
46bc8d4b | 3624 | il = hw->priv; |
c39ae9fd | 3625 | il->hw = hw; |
4bc85c13 WYG |
3626 | SET_IEEE80211_DEV(hw, &pdev->dev); |
3627 | ||
d3175167 | 3628 | il->cmd_queue = IL39_CMD_QUEUE_NUM; |
4bc85c13 | 3629 | |
4bc85c13 WYG |
3630 | /* |
3631 | * Disabling hardware scan means that mac80211 will perform scans | |
3632 | * "the hard way", rather than using device's scan. | |
3633 | */ | |
e2ebc833 | 3634 | if (il3945_mod_params.disable_hw_scan) { |
58de00a4 | 3635 | D_INFO("Disabling hw_scan\n"); |
c39ae9fd | 3636 | il3945_mac_ops.hw_scan = NULL; |
4bc85c13 WYG |
3637 | } |
3638 | ||
58de00a4 | 3639 | D_INFO("*** LOAD DRIVER ***\n"); |
46bc8d4b | 3640 | il->cfg = cfg; |
c39ae9fd | 3641 | il->ops = &il3945_ops; |
93b7654e SG |
3642 | #ifdef CONFIG_IWLEGACY_DEBUGFS |
3643 | il->debugfs_ops = &il3945_debugfs_ops; | |
3644 | #endif | |
46bc8d4b SG |
3645 | il->pci_dev = pdev; |
3646 | il->inta_mask = CSR_INI_SET_MASK; | |
4bc85c13 | 3647 | |
4bc85c13 WYG |
3648 | /*************************** |
3649 | * 2. Initializing PCI bus | |
3650 | * *************************/ | |
e7392364 SG |
3651 | pci_disable_link_state(pdev, |
3652 | PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | | |
3653 | PCIE_LINK_STATE_CLKPM); | |
4bc85c13 WYG |
3654 | |
3655 | if (pci_enable_device(pdev)) { | |
3656 | err = -ENODEV; | |
3657 | goto out_ieee80211_free_hw; | |
3658 | } | |
3659 | ||
3660 | pci_set_master(pdev); | |
3661 | ||
3662 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3663 | if (!err) | |
3664 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
3665 | if (err) { | |
9406f797 | 3666 | IL_WARN("No suitable DMA available.\n"); |
4bc85c13 WYG |
3667 | goto out_pci_disable_device; |
3668 | } | |
3669 | ||
46bc8d4b | 3670 | pci_set_drvdata(pdev, il); |
4bc85c13 WYG |
3671 | err = pci_request_regions(pdev, DRV_NAME); |
3672 | if (err) | |
3673 | goto out_pci_disable_device; | |
3674 | ||
3675 | /*********************** | |
3676 | * 3. Read REV Register | |
3677 | * ********************/ | |
a5f16137 | 3678 | il->hw_base = pci_ioremap_bar(pdev, 0); |
46bc8d4b | 3679 | if (!il->hw_base) { |
4bc85c13 WYG |
3680 | err = -ENODEV; |
3681 | goto out_pci_release_regions; | |
3682 | } | |
3683 | ||
58de00a4 | 3684 | D_INFO("pci_resource_len = 0x%08llx\n", |
e7392364 | 3685 | (unsigned long long)pci_resource_len(pdev, 0)); |
58de00a4 | 3686 | D_INFO("pci_resource_base = %p\n", il->hw_base); |
4bc85c13 WYG |
3687 | |
3688 | /* We disable the RETRY_TIMEOUT register (0x41) to keep | |
3689 | * PCI Tx retries from interfering with C3 CPU state */ | |
3690 | pci_write_config_byte(pdev, 0x41, 0x00); | |
3691 | ||
f03ee2a8 | 3692 | /* these spin locks will be used in apm_init and EEPROM access |
4bc85c13 WYG |
3693 | * we should init now |
3694 | */ | |
46bc8d4b SG |
3695 | spin_lock_init(&il->reg_lock); |
3696 | spin_lock_init(&il->lock); | |
4bc85c13 WYG |
3697 | |
3698 | /* | |
3699 | * stop and reset the on-board processor just in case it is in a | |
3700 | * strange state ... like being left stranded by a primary kernel | |
3701 | * and this is now the kdump kernel trying to start up | |
3702 | */ | |
841b2cca | 3703 | _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); |
4bc85c13 WYG |
3704 | |
3705 | /*********************** | |
3706 | * 4. Read EEPROM | |
3707 | * ********************/ | |
3708 | ||
3709 | /* Read the EEPROM */ | |
46bc8d4b | 3710 | err = il_eeprom_init(il); |
4bc85c13 | 3711 | if (err) { |
9406f797 | 3712 | IL_ERR("Unable to init EEPROM\n"); |
4bc85c13 WYG |
3713 | goto out_iounmap; |
3714 | } | |
3715 | /* MAC Address location in EEPROM same for 3945/4965 */ | |
46bc8d4b | 3716 | eeprom = (struct il3945_eeprom *)il->eeprom; |
58de00a4 | 3717 | D_INFO("MAC address: %pM\n", eeprom->mac_address); |
46bc8d4b | 3718 | SET_IEEE80211_PERM_ADDR(il->hw, eeprom->mac_address); |
4bc85c13 WYG |
3719 | |
3720 | /*********************** | |
3721 | * 5. Setup HW Constants | |
3722 | * ********************/ | |
3723 | /* Device-specific setup */ | |
ca3ae513 WY |
3724 | err = il3945_hw_set_hw_params(il); |
3725 | if (err) { | |
9406f797 | 3726 | IL_ERR("failed to set hw settings\n"); |
4bc85c13 WYG |
3727 | goto out_eeprom_free; |
3728 | } | |
3729 | ||
3730 | /*********************** | |
46bc8d4b | 3731 | * 6. Setup il |
4bc85c13 WYG |
3732 | * ********************/ |
3733 | ||
46bc8d4b | 3734 | err = il3945_init_drv(il); |
4bc85c13 | 3735 | if (err) { |
9406f797 | 3736 | IL_ERR("initializing driver failed\n"); |
4bc85c13 WYG |
3737 | goto out_unset_hw_params; |
3738 | } | |
3739 | ||
e7392364 | 3740 | IL_INFO("Detected Intel Wireless WiFi Link %s\n", il->cfg->name); |
4bc85c13 WYG |
3741 | |
3742 | /*********************** | |
3743 | * 7. Setup Services | |
3744 | * ********************/ | |
3745 | ||
46bc8d4b SG |
3746 | spin_lock_irqsave(&il->lock, flags); |
3747 | il_disable_interrupts(il); | |
3748 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 | 3749 | |
46bc8d4b | 3750 | pci_enable_msi(il->pci_dev); |
4bc85c13 | 3751 | |
e7392364 | 3752 | err = request_irq(il->pci_dev->irq, il_isr, IRQF_SHARED, DRV_NAME, il); |
4bc85c13 | 3753 | if (err) { |
9406f797 | 3754 | IL_ERR("Error allocating IRQ %d\n", il->pci_dev->irq); |
4bc85c13 WYG |
3755 | goto out_disable_msi; |
3756 | } | |
3757 | ||
e2ebc833 | 3758 | err = sysfs_create_group(&pdev->dev.kobj, &il3945_attribute_group); |
4bc85c13 | 3759 | if (err) { |
9406f797 | 3760 | IL_ERR("failed to create sysfs device attributes\n"); |
4bc85c13 WYG |
3761 | goto out_release_irq; |
3762 | } | |
3763 | ||
83007196 | 3764 | il_set_rxon_channel(il, &il->bands[IEEE80211_BAND_2GHZ].channels[5]); |
46bc8d4b | 3765 | il3945_setup_deferred_work(il); |
d0c72347 | 3766 | il3945_setup_handlers(il); |
46bc8d4b | 3767 | il_power_initialize(il); |
4bc85c13 WYG |
3768 | |
3769 | /********************************* | |
3770 | * 8. Setup and Register mac80211 | |
3771 | * *******************************/ | |
3772 | ||
46bc8d4b | 3773 | il_enable_interrupts(il); |
4bc85c13 | 3774 | |
46bc8d4b | 3775 | err = il3945_setup_mac(il); |
4bc85c13 | 3776 | if (err) |
e7392364 | 3777 | goto out_remove_sysfs; |
4bc85c13 | 3778 | |
46bc8d4b | 3779 | err = il_dbgfs_register(il, DRV_NAME); |
4bc85c13 | 3780 | if (err) |
e7392364 SG |
3781 | IL_ERR("failed to create debugfs files. Ignoring error: %d\n", |
3782 | err); | |
4bc85c13 WYG |
3783 | |
3784 | /* Start monitoring the killswitch */ | |
e7392364 | 3785 | queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, 2 * HZ); |
4bc85c13 WYG |
3786 | |
3787 | return 0; | |
3788 | ||
e7392364 | 3789 | out_remove_sysfs: |
46bc8d4b SG |
3790 | destroy_workqueue(il->workqueue); |
3791 | il->workqueue = NULL; | |
e2ebc833 | 3792 | sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group); |
e7392364 | 3793 | out_release_irq: |
46bc8d4b | 3794 | free_irq(il->pci_dev->irq, il); |
e7392364 | 3795 | out_disable_msi: |
46bc8d4b SG |
3796 | pci_disable_msi(il->pci_dev); |
3797 | il_free_geos(il); | |
3798 | il_free_channel_map(il); | |
e7392364 | 3799 | out_unset_hw_params: |
46bc8d4b | 3800 | il3945_unset_hw_params(il); |
e7392364 | 3801 | out_eeprom_free: |
46bc8d4b | 3802 | il_eeprom_free(il); |
e7392364 | 3803 | out_iounmap: |
a5f16137 | 3804 | iounmap(il->hw_base); |
e7392364 | 3805 | out_pci_release_regions: |
4bc85c13 | 3806 | pci_release_regions(pdev); |
e7392364 | 3807 | out_pci_disable_device: |
4bc85c13 | 3808 | pci_disable_device(pdev); |
e7392364 | 3809 | out_ieee80211_free_hw: |
46bc8d4b | 3810 | ieee80211_free_hw(il->hw); |
e7392364 | 3811 | out: |
4bc85c13 WYG |
3812 | return err; |
3813 | } | |
3814 | ||
a027cb88 | 3815 | static void |
e7392364 | 3816 | il3945_pci_remove(struct pci_dev *pdev) |
4bc85c13 | 3817 | { |
46bc8d4b | 3818 | struct il_priv *il = pci_get_drvdata(pdev); |
4bc85c13 WYG |
3819 | unsigned long flags; |
3820 | ||
46bc8d4b | 3821 | if (!il) |
4bc85c13 WYG |
3822 | return; |
3823 | ||
58de00a4 | 3824 | D_INFO("*** UNLOAD DRIVER ***\n"); |
4bc85c13 | 3825 | |
46bc8d4b | 3826 | il_dbgfs_unregister(il); |
4bc85c13 | 3827 | |
a6766ccd | 3828 | set_bit(S_EXIT_PENDING, &il->status); |
4bc85c13 | 3829 | |
46bc8d4b | 3830 | il_leds_exit(il); |
4bc85c13 | 3831 | |
46bc8d4b SG |
3832 | if (il->mac80211_registered) { |
3833 | ieee80211_unregister_hw(il->hw); | |
3834 | il->mac80211_registered = 0; | |
4bc85c13 | 3835 | } else { |
46bc8d4b | 3836 | il3945_down(il); |
4bc85c13 WYG |
3837 | } |
3838 | ||
3839 | /* | |
3840 | * Make sure device is reset to low power before unloading driver. | |
e2ebc833 SG |
3841 | * This may be redundant with il_down(), but there are paths to |
3842 | * run il_down() without calling apm_ops.stop(), and there are | |
3843 | * paths to avoid running il_down() at all before leaving driver. | |
4bc85c13 WYG |
3844 | * This (inexpensive) call *makes sure* device is reset. |
3845 | */ | |
46bc8d4b | 3846 | il_apm_stop(il); |
4bc85c13 WYG |
3847 | |
3848 | /* make sure we flush any pending irq or | |
3849 | * tasklet for the driver | |
3850 | */ | |
46bc8d4b SG |
3851 | spin_lock_irqsave(&il->lock, flags); |
3852 | il_disable_interrupts(il); | |
3853 | spin_unlock_irqrestore(&il->lock, flags); | |
4bc85c13 | 3854 | |
46bc8d4b | 3855 | il3945_synchronize_irq(il); |
4bc85c13 | 3856 | |
e2ebc833 | 3857 | sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group); |
4bc85c13 | 3858 | |
46bc8d4b | 3859 | cancel_delayed_work_sync(&il->_3945.rfkill_poll); |
4bc85c13 | 3860 | |
46bc8d4b | 3861 | il3945_dealloc_ucode_pci(il); |
4bc85c13 | 3862 | |
46bc8d4b SG |
3863 | if (il->rxq.bd) |
3864 | il3945_rx_queue_free(il, &il->rxq); | |
3865 | il3945_hw_txq_ctx_free(il); | |
4bc85c13 | 3866 | |
46bc8d4b | 3867 | il3945_unset_hw_params(il); |
4bc85c13 WYG |
3868 | |
3869 | /*netif_stop_queue(dev); */ | |
46bc8d4b | 3870 | flush_workqueue(il->workqueue); |
4bc85c13 | 3871 | |
e2ebc833 | 3872 | /* ieee80211_unregister_hw calls il3945_mac_stop, which flushes |
46bc8d4b | 3873 | * il->workqueue... so we can't take down the workqueue |
4bc85c13 | 3874 | * until now... */ |
46bc8d4b SG |
3875 | destroy_workqueue(il->workqueue); |
3876 | il->workqueue = NULL; | |
4bc85c13 | 3877 | |
46bc8d4b | 3878 | free_irq(pdev->irq, il); |
4bc85c13 WYG |
3879 | pci_disable_msi(pdev); |
3880 | ||
a5f16137 | 3881 | iounmap(il->hw_base); |
4bc85c13 WYG |
3882 | pci_release_regions(pdev); |
3883 | pci_disable_device(pdev); | |
4bc85c13 | 3884 | |
46bc8d4b SG |
3885 | il_free_channel_map(il); |
3886 | il_free_geos(il); | |
3887 | kfree(il->scan_cmd); | |
3888 | if (il->beacon_skb) | |
3889 | dev_kfree_skb(il->beacon_skb); | |
4bc85c13 | 3890 | |
46bc8d4b | 3891 | ieee80211_free_hw(il->hw); |
4bc85c13 WYG |
3892 | } |
3893 | ||
4bc85c13 WYG |
3894 | /***************************************************************************** |
3895 | * | |
3896 | * driver and module entry point | |
3897 | * | |
3898 | *****************************************************************************/ | |
3899 | ||
e2ebc833 | 3900 | static struct pci_driver il3945_driver = { |
4bc85c13 | 3901 | .name = DRV_NAME, |
e2ebc833 SG |
3902 | .id_table = il3945_hw_card_ids, |
3903 | .probe = il3945_pci_probe, | |
a027cb88 | 3904 | .remove = il3945_pci_remove, |
e2ebc833 | 3905 | .driver.pm = IL_LEGACY_PM_OPS, |
4bc85c13 WYG |
3906 | }; |
3907 | ||
e7392364 SG |
3908 | static int __init |
3909 | il3945_init(void) | |
4bc85c13 WYG |
3910 | { |
3911 | ||
3912 | int ret; | |
3913 | pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); | |
3914 | pr_info(DRV_COPYRIGHT "\n"); | |
3915 | ||
e2ebc833 | 3916 | ret = il3945_rate_control_register(); |
4bc85c13 WYG |
3917 | if (ret) { |
3918 | pr_err("Unable to register rate control algorithm: %d\n", ret); | |
3919 | return ret; | |
3920 | } | |
3921 | ||
e2ebc833 | 3922 | ret = pci_register_driver(&il3945_driver); |
4bc85c13 WYG |
3923 | if (ret) { |
3924 | pr_err("Unable to initialize PCI module\n"); | |
3925 | goto error_register; | |
3926 | } | |
3927 | ||
3928 | return ret; | |
3929 | ||
3930 | error_register: | |
e2ebc833 | 3931 | il3945_rate_control_unregister(); |
4bc85c13 WYG |
3932 | return ret; |
3933 | } | |
3934 | ||
e7392364 SG |
3935 | static void __exit |
3936 | il3945_exit(void) | |
4bc85c13 | 3937 | { |
e2ebc833 SG |
3938 | pci_unregister_driver(&il3945_driver); |
3939 | il3945_rate_control_unregister(); | |
4bc85c13 WYG |
3940 | } |
3941 | ||
d3175167 | 3942 | MODULE_FIRMWARE(IL3945_MODULE_FIRMWARE(IL3945_UCODE_API_MAX)); |
4bc85c13 | 3943 | |
e2ebc833 | 3944 | module_param_named(antenna, il3945_mod_params.antenna, int, S_IRUGO); |
4bc85c13 | 3945 | MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); |
e2ebc833 | 3946 | module_param_named(swcrypto, il3945_mod_params.sw_crypto, int, S_IRUGO); |
e7392364 SG |
3947 | MODULE_PARM_DESC(swcrypto, "using software crypto (default 1 [software])"); |
3948 | module_param_named(disable_hw_scan, il3945_mod_params.disable_hw_scan, int, | |
3949 | S_IRUGO); | |
0263aa45 | 3950 | MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 1)"); |
d3175167 | 3951 | #ifdef CONFIG_IWLEGACY_DEBUG |
d2ddf621 | 3952 | module_param_named(debug, il_debug_level, uint, S_IRUGO | S_IWUSR); |
4bc85c13 WYG |
3953 | MODULE_PARM_DESC(debug, "debug output mask"); |
3954 | #endif | |
e2ebc833 | 3955 | module_param_named(fw_restart, il3945_mod_params.restart_fw, int, S_IRUGO); |
be663ab6 | 3956 | MODULE_PARM_DESC(fw_restart, "restart firmware in case of error"); |
4bc85c13 | 3957 | |
e2ebc833 SG |
3958 | module_exit(il3945_exit); |
3959 | module_init(il3945_init); |