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fa1c114f JS |
1 | /*- |
2 | * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting | |
3 | * Copyright (c) 2004-2005 Atheros Communications, Inc. | |
4 | * Copyright (c) 2006 Devicescape Software, Inc. | |
5 | * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> | |
6 | * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> | |
7 | * | |
8 | * All rights reserved. | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * 1. Redistributions of source code must retain the above copyright | |
14 | * notice, this list of conditions and the following disclaimer, | |
15 | * without modification. | |
16 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
17 | * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any | |
18 | * redistribution must be conditioned upon including a substantially | |
19 | * similar Disclaimer requirement for further binary redistribution. | |
20 | * 3. Neither the names of the above-listed copyright holders nor the names | |
21 | * of any contributors may be used to endorse or promote products derived | |
22 | * from this software without specific prior written permission. | |
23 | * | |
24 | * Alternatively, this software may be distributed under the terms of the | |
25 | * GNU General Public License ("GPL") version 2 as published by the Free | |
26 | * Software Foundation. | |
27 | * | |
28 | * NO WARRANTY | |
29 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
30 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
31 | * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY | |
32 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | |
33 | * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, | |
34 | * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
35 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
36 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER | |
37 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
38 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
39 | * THE POSSIBILITY OF SUCH DAMAGES. | |
40 | * | |
41 | */ | |
42 | ||
fa1c114f JS |
43 | #include <linux/module.h> |
44 | #include <linux/delay.h> | |
274c7c36 | 45 | #include <linux/hardirq.h> |
fa1c114f | 46 | #include <linux/if.h> |
274c7c36 | 47 | #include <linux/io.h> |
fa1c114f JS |
48 | #include <linux/netdevice.h> |
49 | #include <linux/cache.h> | |
50 | #include <linux/pci.h> | |
51 | #include <linux/ethtool.h> | |
52 | #include <linux/uaccess.h> | |
5a0e3ad6 | 53 | #include <linux/slab.h> |
fa1c114f JS |
54 | |
55 | #include <net/ieee80211_radiotap.h> | |
56 | ||
57 | #include <asm/unaligned.h> | |
58 | ||
59 | #include "base.h" | |
60 | #include "reg.h" | |
61 | #include "debug.h" | |
62 | ||
6e220662 | 63 | static u8 ath5k_calinterval = 10; /* Calibrate PHY every 10 secs (TODO: Fixme) */ |
9ad9a26e | 64 | static int modparam_nohwcrypt; |
46802a4f | 65 | module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); |
9ad9a26e | 66 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); |
fa1c114f | 67 | |
42639fcd | 68 | static int modparam_all_channels; |
46802a4f | 69 | module_param_named(all_channels, modparam_all_channels, bool, S_IRUGO); |
42639fcd BC |
70 | MODULE_PARM_DESC(all_channels, "Expose all channels the device can use."); |
71 | ||
fa1c114f JS |
72 | |
73 | /******************\ | |
74 | * Internal defines * | |
75 | \******************/ | |
76 | ||
77 | /* Module info */ | |
78 | MODULE_AUTHOR("Jiri Slaby"); | |
79 | MODULE_AUTHOR("Nick Kossifidis"); | |
80 | MODULE_DESCRIPTION("Support for 5xxx series of Atheros 802.11 wireless LAN cards."); | |
81 | MODULE_SUPPORTED_DEVICE("Atheros 5xxx WLAN cards"); | |
82 | MODULE_LICENSE("Dual BSD/GPL"); | |
0d5f0316 | 83 | MODULE_VERSION("0.6.0 (EXPERIMENTAL)"); |
fa1c114f JS |
84 | |
85 | ||
86 | /* Known PCI ids */ | |
a3aa1884 | 87 | static DEFINE_PCI_DEVICE_TABLE(ath5k_pci_id_table) = { |
97a81f5c PR |
88 | { PCI_VDEVICE(ATHEROS, 0x0207) }, /* 5210 early */ |
89 | { PCI_VDEVICE(ATHEROS, 0x0007) }, /* 5210 */ | |
90 | { PCI_VDEVICE(ATHEROS, 0x0011) }, /* 5311 - this is on AHB bus !*/ | |
91 | { PCI_VDEVICE(ATHEROS, 0x0012) }, /* 5211 */ | |
92 | { PCI_VDEVICE(ATHEROS, 0x0013) }, /* 5212 */ | |
93 | { PCI_VDEVICE(3COM_2, 0x0013) }, /* 3com 5212 */ | |
94 | { PCI_VDEVICE(3COM, 0x0013) }, /* 3com 3CRDAG675 5212 */ | |
95 | { PCI_VDEVICE(ATHEROS, 0x1014) }, /* IBM minipci 5212 */ | |
96 | { PCI_VDEVICE(ATHEROS, 0x0014) }, /* 5212 combatible */ | |
97 | { PCI_VDEVICE(ATHEROS, 0x0015) }, /* 5212 combatible */ | |
98 | { PCI_VDEVICE(ATHEROS, 0x0016) }, /* 5212 combatible */ | |
99 | { PCI_VDEVICE(ATHEROS, 0x0017) }, /* 5212 combatible */ | |
100 | { PCI_VDEVICE(ATHEROS, 0x0018) }, /* 5212 combatible */ | |
101 | { PCI_VDEVICE(ATHEROS, 0x0019) }, /* 5212 combatible */ | |
102 | { PCI_VDEVICE(ATHEROS, 0x001a) }, /* 2413 Griffin-lite */ | |
103 | { PCI_VDEVICE(ATHEROS, 0x001b) }, /* 5413 Eagle */ | |
104 | { PCI_VDEVICE(ATHEROS, 0x001c) }, /* PCI-E cards */ | |
105 | { PCI_VDEVICE(ATHEROS, 0x001d) }, /* 2417 Nala */ | |
fa1c114f JS |
106 | { 0 } |
107 | }; | |
108 | MODULE_DEVICE_TABLE(pci, ath5k_pci_id_table); | |
109 | ||
110 | /* Known SREVs */ | |
2c91108c | 111 | static const struct ath5k_srev_name srev_names[] = { |
1bef016a NK |
112 | { "5210", AR5K_VERSION_MAC, AR5K_SREV_AR5210 }, |
113 | { "5311", AR5K_VERSION_MAC, AR5K_SREV_AR5311 }, | |
114 | { "5311A", AR5K_VERSION_MAC, AR5K_SREV_AR5311A }, | |
115 | { "5311B", AR5K_VERSION_MAC, AR5K_SREV_AR5311B }, | |
116 | { "5211", AR5K_VERSION_MAC, AR5K_SREV_AR5211 }, | |
117 | { "5212", AR5K_VERSION_MAC, AR5K_SREV_AR5212 }, | |
118 | { "5213", AR5K_VERSION_MAC, AR5K_SREV_AR5213 }, | |
119 | { "5213A", AR5K_VERSION_MAC, AR5K_SREV_AR5213A }, | |
120 | { "2413", AR5K_VERSION_MAC, AR5K_SREV_AR2413 }, | |
121 | { "2414", AR5K_VERSION_MAC, AR5K_SREV_AR2414 }, | |
122 | { "5424", AR5K_VERSION_MAC, AR5K_SREV_AR5424 }, | |
123 | { "5413", AR5K_VERSION_MAC, AR5K_SREV_AR5413 }, | |
124 | { "5414", AR5K_VERSION_MAC, AR5K_SREV_AR5414 }, | |
125 | { "2415", AR5K_VERSION_MAC, AR5K_SREV_AR2415 }, | |
126 | { "5416", AR5K_VERSION_MAC, AR5K_SREV_AR5416 }, | |
127 | { "5418", AR5K_VERSION_MAC, AR5K_SREV_AR5418 }, | |
128 | { "2425", AR5K_VERSION_MAC, AR5K_SREV_AR2425 }, | |
129 | { "2417", AR5K_VERSION_MAC, AR5K_SREV_AR2417 }, | |
130 | { "xxxxx", AR5K_VERSION_MAC, AR5K_SREV_UNKNOWN }, | |
fa1c114f JS |
131 | { "5110", AR5K_VERSION_RAD, AR5K_SREV_RAD_5110 }, |
132 | { "5111", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111 }, | |
1bef016a | 133 | { "5111A", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111A }, |
fa1c114f JS |
134 | { "2111", AR5K_VERSION_RAD, AR5K_SREV_RAD_2111 }, |
135 | { "5112", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112 }, | |
136 | { "5112A", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112A }, | |
1bef016a | 137 | { "5112B", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112B }, |
fa1c114f JS |
138 | { "2112", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112 }, |
139 | { "2112A", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112A }, | |
1bef016a NK |
140 | { "2112B", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112B }, |
141 | { "2413", AR5K_VERSION_RAD, AR5K_SREV_RAD_2413 }, | |
142 | { "5413", AR5K_VERSION_RAD, AR5K_SREV_RAD_5413 }, | |
143 | { "2316", AR5K_VERSION_RAD, AR5K_SREV_RAD_2316 }, | |
144 | { "2317", AR5K_VERSION_RAD, AR5K_SREV_RAD_2317 }, | |
145 | { "5424", AR5K_VERSION_RAD, AR5K_SREV_RAD_5424 }, | |
fa1c114f JS |
146 | { "5133", AR5K_VERSION_RAD, AR5K_SREV_RAD_5133 }, |
147 | { "xxxxx", AR5K_VERSION_RAD, AR5K_SREV_UNKNOWN }, | |
148 | }; | |
149 | ||
2c91108c | 150 | static const struct ieee80211_rate ath5k_rates[] = { |
63266a65 BR |
151 | { .bitrate = 10, |
152 | .hw_value = ATH5K_RATE_CODE_1M, }, | |
153 | { .bitrate = 20, | |
154 | .hw_value = ATH5K_RATE_CODE_2M, | |
155 | .hw_value_short = ATH5K_RATE_CODE_2M | AR5K_SET_SHORT_PREAMBLE, | |
156 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
157 | { .bitrate = 55, | |
158 | .hw_value = ATH5K_RATE_CODE_5_5M, | |
159 | .hw_value_short = ATH5K_RATE_CODE_5_5M | AR5K_SET_SHORT_PREAMBLE, | |
160 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
161 | { .bitrate = 110, | |
162 | .hw_value = ATH5K_RATE_CODE_11M, | |
163 | .hw_value_short = ATH5K_RATE_CODE_11M | AR5K_SET_SHORT_PREAMBLE, | |
164 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
165 | { .bitrate = 60, | |
166 | .hw_value = ATH5K_RATE_CODE_6M, | |
167 | .flags = 0 }, | |
168 | { .bitrate = 90, | |
169 | .hw_value = ATH5K_RATE_CODE_9M, | |
170 | .flags = 0 }, | |
171 | { .bitrate = 120, | |
172 | .hw_value = ATH5K_RATE_CODE_12M, | |
173 | .flags = 0 }, | |
174 | { .bitrate = 180, | |
175 | .hw_value = ATH5K_RATE_CODE_18M, | |
176 | .flags = 0 }, | |
177 | { .bitrate = 240, | |
178 | .hw_value = ATH5K_RATE_CODE_24M, | |
179 | .flags = 0 }, | |
180 | { .bitrate = 360, | |
181 | .hw_value = ATH5K_RATE_CODE_36M, | |
182 | .flags = 0 }, | |
183 | { .bitrate = 480, | |
184 | .hw_value = ATH5K_RATE_CODE_48M, | |
185 | .flags = 0 }, | |
186 | { .bitrate = 540, | |
187 | .hw_value = ATH5K_RATE_CODE_54M, | |
188 | .flags = 0 }, | |
189 | /* XR missing */ | |
190 | }; | |
191 | ||
fa1c114f JS |
192 | /* |
193 | * Prototypes - PCI stack related functions | |
194 | */ | |
195 | static int __devinit ath5k_pci_probe(struct pci_dev *pdev, | |
196 | const struct pci_device_id *id); | |
197 | static void __devexit ath5k_pci_remove(struct pci_dev *pdev); | |
198 | #ifdef CONFIG_PM | |
baee1f3c RW |
199 | static int ath5k_pci_suspend(struct device *dev); |
200 | static int ath5k_pci_resume(struct device *dev); | |
201 | ||
202 | SIMPLE_DEV_PM_OPS(ath5k_pm_ops, ath5k_pci_suspend, ath5k_pci_resume); | |
203 | #define ATH5K_PM_OPS (&ath5k_pm_ops) | |
fa1c114f | 204 | #else |
baee1f3c | 205 | #define ATH5K_PM_OPS NULL |
fa1c114f JS |
206 | #endif /* CONFIG_PM */ |
207 | ||
04a9e451 | 208 | static struct pci_driver ath5k_pci_driver = { |
9764f3f9 | 209 | .name = KBUILD_MODNAME, |
fa1c114f JS |
210 | .id_table = ath5k_pci_id_table, |
211 | .probe = ath5k_pci_probe, | |
212 | .remove = __devexit_p(ath5k_pci_remove), | |
baee1f3c | 213 | .driver.pm = ATH5K_PM_OPS, |
fa1c114f JS |
214 | }; |
215 | ||
216 | ||
217 | ||
218 | /* | |
219 | * Prototypes - MAC 802.11 stack related functions | |
220 | */ | |
e039fa4a | 221 | static int ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb); |
cec8db23 BC |
222 | static int ath5k_tx_queue(struct ieee80211_hw *hw, struct sk_buff *skb, |
223 | struct ath5k_txq *txq); | |
209d889b | 224 | static int ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan); |
d7dc1003 | 225 | static int ath5k_reset_wake(struct ath5k_softc *sc); |
fa1c114f JS |
226 | static int ath5k_start(struct ieee80211_hw *hw); |
227 | static void ath5k_stop(struct ieee80211_hw *hw); | |
228 | static int ath5k_add_interface(struct ieee80211_hw *hw, | |
1ed32e4f | 229 | struct ieee80211_vif *vif); |
fa1c114f | 230 | static void ath5k_remove_interface(struct ieee80211_hw *hw, |
1ed32e4f | 231 | struct ieee80211_vif *vif); |
e8975581 | 232 | static int ath5k_config(struct ieee80211_hw *hw, u32 changed); |
3ac64bee JB |
233 | static u64 ath5k_prepare_multicast(struct ieee80211_hw *hw, |
234 | int mc_count, struct dev_addr_list *mc_list); | |
fa1c114f JS |
235 | static void ath5k_configure_filter(struct ieee80211_hw *hw, |
236 | unsigned int changed_flags, | |
237 | unsigned int *new_flags, | |
3ac64bee | 238 | u64 multicast); |
fa1c114f JS |
239 | static int ath5k_set_key(struct ieee80211_hw *hw, |
240 | enum set_key_cmd cmd, | |
dc822b5d | 241 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
fa1c114f JS |
242 | struct ieee80211_key_conf *key); |
243 | static int ath5k_get_stats(struct ieee80211_hw *hw, | |
244 | struct ieee80211_low_level_stats *stats); | |
fa1c114f | 245 | static u64 ath5k_get_tsf(struct ieee80211_hw *hw); |
3b5d665b | 246 | static void ath5k_set_tsf(struct ieee80211_hw *hw, u64 tsf); |
fa1c114f | 247 | static void ath5k_reset_tsf(struct ieee80211_hw *hw); |
1071db86 BC |
248 | static int ath5k_beacon_update(struct ieee80211_hw *hw, |
249 | struct ieee80211_vif *vif); | |
02969b38 MX |
250 | static void ath5k_bss_info_changed(struct ieee80211_hw *hw, |
251 | struct ieee80211_vif *vif, | |
252 | struct ieee80211_bss_conf *bss_conf, | |
253 | u32 changes); | |
f0f3d388 BC |
254 | static void ath5k_sw_scan_start(struct ieee80211_hw *hw); |
255 | static void ath5k_sw_scan_complete(struct ieee80211_hw *hw); | |
6e08d228 LT |
256 | static void ath5k_set_coverage_class(struct ieee80211_hw *hw, |
257 | u8 coverage_class); | |
fa1c114f | 258 | |
2c91108c | 259 | static const struct ieee80211_ops ath5k_hw_ops = { |
fa1c114f JS |
260 | .tx = ath5k_tx, |
261 | .start = ath5k_start, | |
262 | .stop = ath5k_stop, | |
263 | .add_interface = ath5k_add_interface, | |
264 | .remove_interface = ath5k_remove_interface, | |
265 | .config = ath5k_config, | |
3ac64bee | 266 | .prepare_multicast = ath5k_prepare_multicast, |
fa1c114f JS |
267 | .configure_filter = ath5k_configure_filter, |
268 | .set_key = ath5k_set_key, | |
269 | .get_stats = ath5k_get_stats, | |
270 | .conf_tx = NULL, | |
fa1c114f | 271 | .get_tsf = ath5k_get_tsf, |
3b5d665b | 272 | .set_tsf = ath5k_set_tsf, |
fa1c114f | 273 | .reset_tsf = ath5k_reset_tsf, |
02969b38 | 274 | .bss_info_changed = ath5k_bss_info_changed, |
f0f3d388 BC |
275 | .sw_scan_start = ath5k_sw_scan_start, |
276 | .sw_scan_complete = ath5k_sw_scan_complete, | |
6e08d228 | 277 | .set_coverage_class = ath5k_set_coverage_class, |
fa1c114f JS |
278 | }; |
279 | ||
280 | /* | |
281 | * Prototypes - Internal functions | |
282 | */ | |
283 | /* Attach detach */ | |
284 | static int ath5k_attach(struct pci_dev *pdev, | |
285 | struct ieee80211_hw *hw); | |
286 | static void ath5k_detach(struct pci_dev *pdev, | |
287 | struct ieee80211_hw *hw); | |
288 | /* Channel/mode setup */ | |
289 | static inline short ath5k_ieee2mhz(short chan); | |
fa1c114f JS |
290 | static unsigned int ath5k_copy_channels(struct ath5k_hw *ah, |
291 | struct ieee80211_channel *channels, | |
292 | unsigned int mode, | |
293 | unsigned int max); | |
63266a65 | 294 | static int ath5k_setup_bands(struct ieee80211_hw *hw); |
fa1c114f JS |
295 | static int ath5k_chan_set(struct ath5k_softc *sc, |
296 | struct ieee80211_channel *chan); | |
297 | static void ath5k_setcurmode(struct ath5k_softc *sc, | |
298 | unsigned int mode); | |
299 | static void ath5k_mode_setup(struct ath5k_softc *sc); | |
d8ee398d | 300 | |
fa1c114f JS |
301 | /* Descriptor setup */ |
302 | static int ath5k_desc_alloc(struct ath5k_softc *sc, | |
303 | struct pci_dev *pdev); | |
304 | static void ath5k_desc_free(struct ath5k_softc *sc, | |
305 | struct pci_dev *pdev); | |
306 | /* Buffers setup */ | |
307 | static int ath5k_rxbuf_setup(struct ath5k_softc *sc, | |
308 | struct ath5k_buf *bf); | |
309 | static int ath5k_txbuf_setup(struct ath5k_softc *sc, | |
cec8db23 BC |
310 | struct ath5k_buf *bf, |
311 | struct ath5k_txq *txq); | |
fa1c114f JS |
312 | static inline void ath5k_txbuf_free(struct ath5k_softc *sc, |
313 | struct ath5k_buf *bf) | |
314 | { | |
315 | BUG_ON(!bf); | |
316 | if (!bf->skb) | |
317 | return; | |
318 | pci_unmap_single(sc->pdev, bf->skbaddr, bf->skb->len, | |
319 | PCI_DMA_TODEVICE); | |
00482973 | 320 | dev_kfree_skb_any(bf->skb); |
fa1c114f JS |
321 | bf->skb = NULL; |
322 | } | |
323 | ||
a6c8d375 FF |
324 | static inline void ath5k_rxbuf_free(struct ath5k_softc *sc, |
325 | struct ath5k_buf *bf) | |
326 | { | |
cc861f74 LR |
327 | struct ath5k_hw *ah = sc->ah; |
328 | struct ath_common *common = ath5k_hw_common(ah); | |
329 | ||
a6c8d375 FF |
330 | BUG_ON(!bf); |
331 | if (!bf->skb) | |
332 | return; | |
cc861f74 | 333 | pci_unmap_single(sc->pdev, bf->skbaddr, common->rx_bufsize, |
a6c8d375 FF |
334 | PCI_DMA_FROMDEVICE); |
335 | dev_kfree_skb_any(bf->skb); | |
336 | bf->skb = NULL; | |
337 | } | |
338 | ||
339 | ||
fa1c114f JS |
340 | /* Queues setup */ |
341 | static struct ath5k_txq *ath5k_txq_setup(struct ath5k_softc *sc, | |
342 | int qtype, int subtype); | |
343 | static int ath5k_beaconq_setup(struct ath5k_hw *ah); | |
344 | static int ath5k_beaconq_config(struct ath5k_softc *sc); | |
345 | static void ath5k_txq_drainq(struct ath5k_softc *sc, | |
346 | struct ath5k_txq *txq); | |
347 | static void ath5k_txq_cleanup(struct ath5k_softc *sc); | |
348 | static void ath5k_txq_release(struct ath5k_softc *sc); | |
349 | /* Rx handling */ | |
350 | static int ath5k_rx_start(struct ath5k_softc *sc); | |
351 | static void ath5k_rx_stop(struct ath5k_softc *sc); | |
352 | static unsigned int ath5k_rx_decrypted(struct ath5k_softc *sc, | |
353 | struct ath5k_desc *ds, | |
b47f407b BR |
354 | struct sk_buff *skb, |
355 | struct ath5k_rx_status *rs); | |
fa1c114f JS |
356 | static void ath5k_tasklet_rx(unsigned long data); |
357 | /* Tx handling */ | |
358 | static void ath5k_tx_processq(struct ath5k_softc *sc, | |
359 | struct ath5k_txq *txq); | |
360 | static void ath5k_tasklet_tx(unsigned long data); | |
361 | /* Beacon handling */ | |
362 | static int ath5k_beacon_setup(struct ath5k_softc *sc, | |
e039fa4a | 363 | struct ath5k_buf *bf); |
fa1c114f JS |
364 | static void ath5k_beacon_send(struct ath5k_softc *sc); |
365 | static void ath5k_beacon_config(struct ath5k_softc *sc); | |
9804b98d | 366 | static void ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf); |
acf3c1a5 | 367 | static void ath5k_tasklet_beacon(unsigned long data); |
fa1c114f JS |
368 | |
369 | static inline u64 ath5k_extend_tsf(struct ath5k_hw *ah, u32 rstamp) | |
370 | { | |
371 | u64 tsf = ath5k_hw_get_tsf64(ah); | |
372 | ||
373 | if ((tsf & 0x7fff) < rstamp) | |
374 | tsf -= 0x8000; | |
375 | ||
376 | return (tsf & ~0x7fff) | rstamp; | |
377 | } | |
378 | ||
379 | /* Interrupt handling */ | |
bb2becac | 380 | static int ath5k_init(struct ath5k_softc *sc); |
fa1c114f | 381 | static int ath5k_stop_locked(struct ath5k_softc *sc); |
bb2becac | 382 | static int ath5k_stop_hw(struct ath5k_softc *sc); |
fa1c114f JS |
383 | static irqreturn_t ath5k_intr(int irq, void *dev_id); |
384 | static void ath5k_tasklet_reset(unsigned long data); | |
385 | ||
6e220662 | 386 | static void ath5k_tasklet_calibrate(unsigned long data); |
fa1c114f JS |
387 | |
388 | /* | |
389 | * Module init/exit functions | |
390 | */ | |
391 | static int __init | |
392 | init_ath5k_pci(void) | |
393 | { | |
394 | int ret; | |
395 | ||
396 | ath5k_debug_init(); | |
397 | ||
04a9e451 | 398 | ret = pci_register_driver(&ath5k_pci_driver); |
fa1c114f JS |
399 | if (ret) { |
400 | printk(KERN_ERR "ath5k_pci: can't register pci driver\n"); | |
401 | return ret; | |
402 | } | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
407 | static void __exit | |
408 | exit_ath5k_pci(void) | |
409 | { | |
04a9e451 | 410 | pci_unregister_driver(&ath5k_pci_driver); |
fa1c114f JS |
411 | |
412 | ath5k_debug_finish(); | |
413 | } | |
414 | ||
415 | module_init(init_ath5k_pci); | |
416 | module_exit(exit_ath5k_pci); | |
417 | ||
418 | ||
419 | /********************\ | |
420 | * PCI Initialization * | |
421 | \********************/ | |
422 | ||
423 | static const char * | |
424 | ath5k_chip_name(enum ath5k_srev_type type, u_int16_t val) | |
425 | { | |
426 | const char *name = "xxxxx"; | |
427 | unsigned int i; | |
428 | ||
429 | for (i = 0; i < ARRAY_SIZE(srev_names); i++) { | |
430 | if (srev_names[i].sr_type != type) | |
431 | continue; | |
75d0edb8 NK |
432 | |
433 | if ((val & 0xf0) == srev_names[i].sr_val) | |
434 | name = srev_names[i].sr_name; | |
435 | ||
436 | if ((val & 0xff) == srev_names[i].sr_val) { | |
fa1c114f JS |
437 | name = srev_names[i].sr_name; |
438 | break; | |
439 | } | |
440 | } | |
441 | ||
442 | return name; | |
443 | } | |
e5aa8474 LR |
444 | static unsigned int ath5k_ioread32(void *hw_priv, u32 reg_offset) |
445 | { | |
446 | struct ath5k_hw *ah = (struct ath5k_hw *) hw_priv; | |
447 | return ath5k_hw_reg_read(ah, reg_offset); | |
448 | } | |
449 | ||
450 | static void ath5k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) | |
451 | { | |
452 | struct ath5k_hw *ah = (struct ath5k_hw *) hw_priv; | |
453 | ath5k_hw_reg_write(ah, val, reg_offset); | |
454 | } | |
455 | ||
456 | static const struct ath_ops ath5k_common_ops = { | |
457 | .read = ath5k_ioread32, | |
458 | .write = ath5k_iowrite32, | |
459 | }; | |
fa1c114f JS |
460 | |
461 | static int __devinit | |
462 | ath5k_pci_probe(struct pci_dev *pdev, | |
463 | const struct pci_device_id *id) | |
464 | { | |
465 | void __iomem *mem; | |
466 | struct ath5k_softc *sc; | |
db719718 | 467 | struct ath_common *common; |
fa1c114f JS |
468 | struct ieee80211_hw *hw; |
469 | int ret; | |
470 | u8 csz; | |
471 | ||
472 | ret = pci_enable_device(pdev); | |
473 | if (ret) { | |
474 | dev_err(&pdev->dev, "can't enable device\n"); | |
475 | goto err; | |
476 | } | |
477 | ||
478 | /* XXX 32-bit addressing only */ | |
284901a9 | 479 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
fa1c114f JS |
480 | if (ret) { |
481 | dev_err(&pdev->dev, "32-bit DMA not available\n"); | |
482 | goto err_dis; | |
483 | } | |
484 | ||
485 | /* | |
486 | * Cache line size is used to size and align various | |
487 | * structures used to communicate with the hardware. | |
488 | */ | |
489 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz); | |
490 | if (csz == 0) { | |
491 | /* | |
492 | * Linux 2.4.18 (at least) writes the cache line size | |
493 | * register as a 16-bit wide register which is wrong. | |
494 | * We must have this setup properly for rx buffer | |
495 | * DMA to work so force a reasonable value here if it | |
496 | * comes up zero. | |
497 | */ | |
13311b00 | 498 | csz = L1_CACHE_BYTES >> 2; |
fa1c114f JS |
499 | pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz); |
500 | } | |
501 | /* | |
502 | * The default setting of latency timer yields poor results, | |
503 | * set it to the value used by other systems. It may be worth | |
504 | * tweaking this setting more. | |
505 | */ | |
506 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8); | |
507 | ||
508 | /* Enable bus mastering */ | |
509 | pci_set_master(pdev); | |
510 | ||
511 | /* | |
512 | * Disable the RETRY_TIMEOUT register (0x41) to keep | |
513 | * PCI Tx retries from interfering with C3 CPU state. | |
514 | */ | |
515 | pci_write_config_byte(pdev, 0x41, 0); | |
516 | ||
517 | ret = pci_request_region(pdev, 0, "ath5k"); | |
518 | if (ret) { | |
519 | dev_err(&pdev->dev, "cannot reserve PCI memory region\n"); | |
520 | goto err_dis; | |
521 | } | |
522 | ||
523 | mem = pci_iomap(pdev, 0, 0); | |
524 | if (!mem) { | |
525 | dev_err(&pdev->dev, "cannot remap PCI memory region\n") ; | |
526 | ret = -EIO; | |
527 | goto err_reg; | |
528 | } | |
529 | ||
530 | /* | |
531 | * Allocate hw (mac80211 main struct) | |
532 | * and hw->priv (driver private data) | |
533 | */ | |
534 | hw = ieee80211_alloc_hw(sizeof(*sc), &ath5k_hw_ops); | |
535 | if (hw == NULL) { | |
536 | dev_err(&pdev->dev, "cannot allocate ieee80211_hw\n"); | |
537 | ret = -ENOMEM; | |
538 | goto err_map; | |
539 | } | |
540 | ||
541 | dev_info(&pdev->dev, "registered as '%s'\n", wiphy_name(hw->wiphy)); | |
542 | ||
543 | /* Initialize driver private data */ | |
544 | SET_IEEE80211_DEV(hw, &pdev->dev); | |
566bfe5a | 545 | hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
cec8db23 | 546 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | |
566bfe5a BR |
547 | IEEE80211_HW_SIGNAL_DBM | |
548 | IEEE80211_HW_NOISE_DBM; | |
f59ac048 LR |
549 | |
550 | hw->wiphy->interface_modes = | |
6f5f39c9 | 551 | BIT(NL80211_IFTYPE_AP) | |
f59ac048 LR |
552 | BIT(NL80211_IFTYPE_STATION) | |
553 | BIT(NL80211_IFTYPE_ADHOC) | | |
554 | BIT(NL80211_IFTYPE_MESH_POINT); | |
555 | ||
fa1c114f JS |
556 | hw->extra_tx_headroom = 2; |
557 | hw->channel_change_time = 5000; | |
fa1c114f JS |
558 | sc = hw->priv; |
559 | sc->hw = hw; | |
560 | sc->pdev = pdev; | |
561 | ||
562 | ath5k_debug_init_device(sc); | |
563 | ||
564 | /* | |
565 | * Mark the device as detached to avoid processing | |
566 | * interrupts until setup is complete. | |
567 | */ | |
568 | __set_bit(ATH_STAT_INVALID, sc->status); | |
569 | ||
570 | sc->iobase = mem; /* So we can unmap it on detach */ | |
05c914fe | 571 | sc->opmode = NL80211_IFTYPE_STATION; |
eab0cd49 | 572 | sc->bintval = 1000; |
fa1c114f JS |
573 | mutex_init(&sc->lock); |
574 | spin_lock_init(&sc->rxbuflock); | |
575 | spin_lock_init(&sc->txbuflock); | |
00482973 | 576 | spin_lock_init(&sc->block); |
fa1c114f JS |
577 | |
578 | /* Set private data */ | |
579 | pci_set_drvdata(pdev, hw); | |
580 | ||
fa1c114f JS |
581 | /* Setup interrupt handler */ |
582 | ret = request_irq(pdev->irq, ath5k_intr, IRQF_SHARED, "ath", sc); | |
583 | if (ret) { | |
584 | ATH5K_ERR(sc, "request_irq failed\n"); | |
585 | goto err_free; | |
586 | } | |
587 | ||
9adca126 LR |
588 | /*If we passed the test malloc a ath5k_hw struct*/ |
589 | sc->ah = kzalloc(sizeof(struct ath5k_hw), GFP_KERNEL); | |
590 | if (!sc->ah) { | |
591 | ret = -ENOMEM; | |
592 | ATH5K_ERR(sc, "out of memory\n"); | |
fa1c114f JS |
593 | goto err_irq; |
594 | } | |
595 | ||
9adca126 LR |
596 | sc->ah->ah_sc = sc; |
597 | sc->ah->ah_iobase = sc->iobase; | |
db719718 | 598 | common = ath5k_hw_common(sc->ah); |
e5aa8474 | 599 | common->ops = &ath5k_common_ops; |
13b81559 | 600 | common->ah = sc->ah; |
b002a4a9 | 601 | common->hw = hw; |
db719718 LR |
602 | common->cachelsz = csz << 2; /* convert to bytes */ |
603 | ||
9adca126 LR |
604 | /* Initialize device */ |
605 | ret = ath5k_hw_attach(sc); | |
606 | if (ret) { | |
607 | goto err_free_ah; | |
608 | } | |
609 | ||
2f7fe870 FF |
610 | /* set up multi-rate retry capabilities */ |
611 | if (sc->ah->ah_version == AR5K_AR5212) { | |
e6a9854b JB |
612 | hw->max_rates = 4; |
613 | hw->max_rate_tries = 11; | |
2f7fe870 FF |
614 | } |
615 | ||
fa1c114f JS |
616 | /* Finish private driver data initialization */ |
617 | ret = ath5k_attach(pdev, hw); | |
618 | if (ret) | |
619 | goto err_ah; | |
620 | ||
621 | ATH5K_INFO(sc, "Atheros AR%s chip found (MAC: 0x%x, PHY: 0x%x)\n", | |
1bef016a | 622 | ath5k_chip_name(AR5K_VERSION_MAC, sc->ah->ah_mac_srev), |
fa1c114f JS |
623 | sc->ah->ah_mac_srev, |
624 | sc->ah->ah_phy_revision); | |
625 | ||
400ec45a | 626 | if (!sc->ah->ah_single_chip) { |
fa1c114f | 627 | /* Single chip radio (!RF5111) */ |
400ec45a LR |
628 | if (sc->ah->ah_radio_5ghz_revision && |
629 | !sc->ah->ah_radio_2ghz_revision) { | |
fa1c114f | 630 | /* No 5GHz support -> report 2GHz radio */ |
400ec45a LR |
631 | if (!test_bit(AR5K_MODE_11A, |
632 | sc->ah->ah_capabilities.cap_mode)) { | |
fa1c114f | 633 | ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n", |
400ec45a LR |
634 | ath5k_chip_name(AR5K_VERSION_RAD, |
635 | sc->ah->ah_radio_5ghz_revision), | |
636 | sc->ah->ah_radio_5ghz_revision); | |
637 | /* No 2GHz support (5110 and some | |
638 | * 5Ghz only cards) -> report 5Ghz radio */ | |
639 | } else if (!test_bit(AR5K_MODE_11B, | |
640 | sc->ah->ah_capabilities.cap_mode)) { | |
fa1c114f | 641 | ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n", |
400ec45a LR |
642 | ath5k_chip_name(AR5K_VERSION_RAD, |
643 | sc->ah->ah_radio_5ghz_revision), | |
644 | sc->ah->ah_radio_5ghz_revision); | |
fa1c114f JS |
645 | /* Multiband radio */ |
646 | } else { | |
647 | ATH5K_INFO(sc, "RF%s multiband radio found" | |
648 | " (0x%x)\n", | |
400ec45a LR |
649 | ath5k_chip_name(AR5K_VERSION_RAD, |
650 | sc->ah->ah_radio_5ghz_revision), | |
651 | sc->ah->ah_radio_5ghz_revision); | |
fa1c114f JS |
652 | } |
653 | } | |
400ec45a LR |
654 | /* Multi chip radio (RF5111 - RF2111) -> |
655 | * report both 2GHz/5GHz radios */ | |
656 | else if (sc->ah->ah_radio_5ghz_revision && | |
657 | sc->ah->ah_radio_2ghz_revision){ | |
fa1c114f | 658 | ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n", |
400ec45a LR |
659 | ath5k_chip_name(AR5K_VERSION_RAD, |
660 | sc->ah->ah_radio_5ghz_revision), | |
661 | sc->ah->ah_radio_5ghz_revision); | |
fa1c114f | 662 | ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n", |
400ec45a LR |
663 | ath5k_chip_name(AR5K_VERSION_RAD, |
664 | sc->ah->ah_radio_2ghz_revision), | |
665 | sc->ah->ah_radio_2ghz_revision); | |
fa1c114f JS |
666 | } |
667 | } | |
668 | ||
669 | ||
670 | /* ready to process interrupts */ | |
671 | __clear_bit(ATH_STAT_INVALID, sc->status); | |
672 | ||
673 | return 0; | |
674 | err_ah: | |
675 | ath5k_hw_detach(sc->ah); | |
676 | err_irq: | |
677 | free_irq(pdev->irq, sc); | |
9adca126 LR |
678 | err_free_ah: |
679 | kfree(sc->ah); | |
fa1c114f | 680 | err_free: |
fa1c114f JS |
681 | ieee80211_free_hw(hw); |
682 | err_map: | |
683 | pci_iounmap(pdev, mem); | |
684 | err_reg: | |
685 | pci_release_region(pdev, 0); | |
686 | err_dis: | |
687 | pci_disable_device(pdev); | |
688 | err: | |
689 | return ret; | |
690 | } | |
691 | ||
692 | static void __devexit | |
693 | ath5k_pci_remove(struct pci_dev *pdev) | |
694 | { | |
695 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); | |
696 | struct ath5k_softc *sc = hw->priv; | |
697 | ||
698 | ath5k_debug_finish_device(sc); | |
699 | ath5k_detach(pdev, hw); | |
700 | ath5k_hw_detach(sc->ah); | |
9adca126 | 701 | kfree(sc->ah); |
fa1c114f | 702 | free_irq(pdev->irq, sc); |
fa1c114f JS |
703 | pci_iounmap(pdev, sc->iobase); |
704 | pci_release_region(pdev, 0); | |
705 | pci_disable_device(pdev); | |
706 | ieee80211_free_hw(hw); | |
707 | } | |
708 | ||
709 | #ifdef CONFIG_PM | |
baee1f3c | 710 | static int ath5k_pci_suspend(struct device *dev) |
fa1c114f | 711 | { |
baee1f3c | 712 | struct ieee80211_hw *hw = pci_get_drvdata(to_pci_dev(dev)); |
fa1c114f JS |
713 | struct ath5k_softc *sc = hw->priv; |
714 | ||
3a078876 | 715 | ath5k_led_off(sc); |
fa1c114f JS |
716 | return 0; |
717 | } | |
718 | ||
baee1f3c | 719 | static int ath5k_pci_resume(struct device *dev) |
fa1c114f | 720 | { |
baee1f3c | 721 | struct pci_dev *pdev = to_pci_dev(dev); |
fa1c114f JS |
722 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); |
723 | struct ath5k_softc *sc = hw->priv; | |
fa1c114f | 724 | |
8451d22d JM |
725 | /* |
726 | * Suspend/Resume resets the PCI configuration space, so we have to | |
727 | * re-disable the RETRY_TIMEOUT register (0x41) to keep | |
728 | * PCI Tx retries from interfering with C3 CPU state | |
729 | */ | |
730 | pci_write_config_byte(pdev, 0x41, 0); | |
731 | ||
3a078876 | 732 | ath5k_led_enable(sc); |
fa1c114f JS |
733 | return 0; |
734 | } | |
735 | #endif /* CONFIG_PM */ | |
736 | ||
737 | ||
fa1c114f JS |
738 | /***********************\ |
739 | * Driver Initialization * | |
740 | \***********************/ | |
741 | ||
f769c36b BC |
742 | static int ath5k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) |
743 | { | |
744 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
745 | struct ath5k_softc *sc = hw->priv; | |
db719718 | 746 | struct ath_regulatory *regulatory = ath5k_hw_regulatory(sc->ah); |
f769c36b | 747 | |
608b88cb | 748 | return ath_reg_notifier_apply(wiphy, request, regulatory); |
f769c36b BC |
749 | } |
750 | ||
fa1c114f JS |
751 | static int |
752 | ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw) | |
753 | { | |
754 | struct ath5k_softc *sc = hw->priv; | |
755 | struct ath5k_hw *ah = sc->ah; | |
db719718 | 756 | struct ath_regulatory *regulatory = ath5k_hw_regulatory(ah); |
0e149cf5 | 757 | u8 mac[ETH_ALEN] = {}; |
fa1c114f JS |
758 | int ret; |
759 | ||
760 | ATH5K_DBG(sc, ATH5K_DEBUG_ANY, "devid 0x%x\n", pdev->device); | |
761 | ||
762 | /* | |
763 | * Check if the MAC has multi-rate retry support. | |
764 | * We do this by trying to setup a fake extended | |
765 | * descriptor. MAC's that don't have support will | |
766 | * return false w/o doing anything. MAC's that do | |
767 | * support it will return true w/o doing anything. | |
768 | */ | |
c6e387a2 | 769 | ret = ah->ah_setup_mrr_tx_desc(ah, NULL, 0, 0, 0, 0, 0, 0); |
b9887638 JS |
770 | if (ret < 0) |
771 | goto err; | |
772 | if (ret > 0) | |
fa1c114f JS |
773 | __set_bit(ATH_STAT_MRRETRY, sc->status); |
774 | ||
fa1c114f JS |
775 | /* |
776 | * Collect the channel list. The 802.11 layer | |
777 | * is resposible for filtering this list based | |
778 | * on settings like the phy mode and regulatory | |
779 | * domain restrictions. | |
780 | */ | |
63266a65 | 781 | ret = ath5k_setup_bands(hw); |
fa1c114f JS |
782 | if (ret) { |
783 | ATH5K_ERR(sc, "can't get channels\n"); | |
784 | goto err; | |
785 | } | |
786 | ||
787 | /* NB: setup here so ath5k_rate_update is happy */ | |
d8ee398d LR |
788 | if (test_bit(AR5K_MODE_11A, ah->ah_modes)) |
789 | ath5k_setcurmode(sc, AR5K_MODE_11A); | |
fa1c114f | 790 | else |
d8ee398d | 791 | ath5k_setcurmode(sc, AR5K_MODE_11B); |
fa1c114f JS |
792 | |
793 | /* | |
794 | * Allocate tx+rx descriptors and populate the lists. | |
795 | */ | |
796 | ret = ath5k_desc_alloc(sc, pdev); | |
797 | if (ret) { | |
798 | ATH5K_ERR(sc, "can't allocate descriptors\n"); | |
799 | goto err; | |
800 | } | |
801 | ||
802 | /* | |
803 | * Allocate hardware transmit queues: one queue for | |
804 | * beacon frames and one data queue for each QoS | |
805 | * priority. Note that hw functions handle reseting | |
806 | * these queues at the needed time. | |
807 | */ | |
808 | ret = ath5k_beaconq_setup(ah); | |
809 | if (ret < 0) { | |
810 | ATH5K_ERR(sc, "can't setup a beacon xmit queue\n"); | |
811 | goto err_desc; | |
812 | } | |
813 | sc->bhalq = ret; | |
cec8db23 BC |
814 | sc->cabq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_CAB, 0); |
815 | if (IS_ERR(sc->cabq)) { | |
816 | ATH5K_ERR(sc, "can't setup cab queue\n"); | |
817 | ret = PTR_ERR(sc->cabq); | |
818 | goto err_bhal; | |
819 | } | |
fa1c114f JS |
820 | |
821 | sc->txq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_DATA, AR5K_WME_AC_BK); | |
822 | if (IS_ERR(sc->txq)) { | |
823 | ATH5K_ERR(sc, "can't setup xmit queue\n"); | |
824 | ret = PTR_ERR(sc->txq); | |
cec8db23 | 825 | goto err_queues; |
fa1c114f JS |
826 | } |
827 | ||
828 | tasklet_init(&sc->rxtq, ath5k_tasklet_rx, (unsigned long)sc); | |
829 | tasklet_init(&sc->txtq, ath5k_tasklet_tx, (unsigned long)sc); | |
830 | tasklet_init(&sc->restq, ath5k_tasklet_reset, (unsigned long)sc); | |
6e220662 | 831 | tasklet_init(&sc->calib, ath5k_tasklet_calibrate, (unsigned long)sc); |
acf3c1a5 | 832 | tasklet_init(&sc->beacontq, ath5k_tasklet_beacon, (unsigned long)sc); |
fa1c114f | 833 | |
0e149cf5 BC |
834 | ret = ath5k_eeprom_read_mac(ah, mac); |
835 | if (ret) { | |
836 | ATH5K_ERR(sc, "unable to read address from EEPROM: 0x%04x\n", | |
837 | sc->pdev->device); | |
838 | goto err_queues; | |
839 | } | |
840 | ||
fa1c114f JS |
841 | SET_IEEE80211_PERM_ADDR(hw, mac); |
842 | /* All MAC address bits matter for ACKs */ | |
17753748 | 843 | memcpy(sc->bssidmask, ath_bcast_mac, ETH_ALEN); |
fa1c114f JS |
844 | ath5k_hw_set_bssid_mask(sc->ah, sc->bssidmask); |
845 | ||
608b88cb LR |
846 | regulatory->current_rd = ah->ah_capabilities.cap_eeprom.ee_regdomain; |
847 | ret = ath_regd_init(regulatory, hw->wiphy, ath5k_reg_notifier); | |
f769c36b BC |
848 | if (ret) { |
849 | ATH5K_ERR(sc, "can't initialize regulatory system\n"); | |
850 | goto err_queues; | |
851 | } | |
852 | ||
fa1c114f JS |
853 | ret = ieee80211_register_hw(hw); |
854 | if (ret) { | |
855 | ATH5K_ERR(sc, "can't register ieee80211 hw\n"); | |
856 | goto err_queues; | |
857 | } | |
858 | ||
608b88cb LR |
859 | if (!ath_is_world_regd(regulatory)) |
860 | regulatory_hint(hw->wiphy, regulatory->alpha2); | |
f769c36b | 861 | |
3a078876 BC |
862 | ath5k_init_leds(sc); |
863 | ||
fa1c114f JS |
864 | return 0; |
865 | err_queues: | |
866 | ath5k_txq_release(sc); | |
867 | err_bhal: | |
868 | ath5k_hw_release_tx_queue(ah, sc->bhalq); | |
869 | err_desc: | |
870 | ath5k_desc_free(sc, pdev); | |
871 | err: | |
872 | return ret; | |
873 | } | |
874 | ||
875 | static void | |
876 | ath5k_detach(struct pci_dev *pdev, struct ieee80211_hw *hw) | |
877 | { | |
878 | struct ath5k_softc *sc = hw->priv; | |
879 | ||
880 | /* | |
881 | * NB: the order of these is important: | |
882 | * o call the 802.11 layer before detaching ath5k_hw to | |
883 | * insure callbacks into the driver to delete global | |
884 | * key cache entries can be handled | |
885 | * o reclaim the tx queue data structures after calling | |
886 | * the 802.11 layer as we'll get called back to reclaim | |
887 | * node state and potentially want to use them | |
888 | * o to cleanup the tx queues the hal is called, so detach | |
889 | * it last | |
890 | * XXX: ??? detach ath5k_hw ??? | |
891 | * Other than that, it's straightforward... | |
892 | */ | |
893 | ieee80211_unregister_hw(hw); | |
894 | ath5k_desc_free(sc, pdev); | |
895 | ath5k_txq_release(sc); | |
896 | ath5k_hw_release_tx_queue(sc->ah, sc->bhalq); | |
3a078876 | 897 | ath5k_unregister_leds(sc); |
fa1c114f JS |
898 | |
899 | /* | |
900 | * NB: can't reclaim these until after ieee80211_ifdetach | |
901 | * returns because we'll get called back to reclaim node | |
902 | * state and potentially want to use them. | |
903 | */ | |
904 | } | |
905 | ||
906 | ||
907 | ||
908 | ||
909 | /********************\ | |
910 | * Channel/mode setup * | |
911 | \********************/ | |
912 | ||
913 | /* | |
914 | * Convert IEEE channel number to MHz frequency. | |
915 | */ | |
916 | static inline short | |
917 | ath5k_ieee2mhz(short chan) | |
918 | { | |
919 | if (chan <= 14 || chan >= 27) | |
920 | return ieee80211chan2mhz(chan); | |
921 | else | |
922 | return 2212 + chan * 20; | |
923 | } | |
924 | ||
42639fcd BC |
925 | /* |
926 | * Returns true for the channel numbers used without all_channels modparam. | |
927 | */ | |
928 | static bool ath5k_is_standard_channel(short chan) | |
929 | { | |
930 | return ((chan <= 14) || | |
931 | /* UNII 1,2 */ | |
932 | ((chan & 3) == 0 && chan >= 36 && chan <= 64) || | |
933 | /* midband */ | |
934 | ((chan & 3) == 0 && chan >= 100 && chan <= 140) || | |
935 | /* UNII-3 */ | |
936 | ((chan & 3) == 1 && chan >= 149 && chan <= 165)); | |
937 | } | |
938 | ||
fa1c114f JS |
939 | static unsigned int |
940 | ath5k_copy_channels(struct ath5k_hw *ah, | |
941 | struct ieee80211_channel *channels, | |
942 | unsigned int mode, | |
943 | unsigned int max) | |
944 | { | |
d8ee398d | 945 | unsigned int i, count, size, chfreq, freq, ch; |
fa1c114f JS |
946 | |
947 | if (!test_bit(mode, ah->ah_modes)) | |
948 | return 0; | |
949 | ||
fa1c114f | 950 | switch (mode) { |
d8ee398d LR |
951 | case AR5K_MODE_11A: |
952 | case AR5K_MODE_11A_TURBO: | |
fa1c114f | 953 | /* 1..220, but 2GHz frequencies are filtered by check_channel */ |
d8ee398d | 954 | size = 220 ; |
fa1c114f JS |
955 | chfreq = CHANNEL_5GHZ; |
956 | break; | |
d8ee398d LR |
957 | case AR5K_MODE_11B: |
958 | case AR5K_MODE_11G: | |
959 | case AR5K_MODE_11G_TURBO: | |
960 | size = 26; | |
fa1c114f JS |
961 | chfreq = CHANNEL_2GHZ; |
962 | break; | |
963 | default: | |
964 | ATH5K_WARN(ah->ah_sc, "bad mode, not copying channels\n"); | |
965 | return 0; | |
966 | } | |
967 | ||
968 | for (i = 0, count = 0; i < size && max > 0; i++) { | |
d8ee398d LR |
969 | ch = i + 1 ; |
970 | freq = ath5k_ieee2mhz(ch); | |
fa1c114f | 971 | |
d8ee398d LR |
972 | /* Check if channel is supported by the chipset */ |
973 | if (!ath5k_channel_ok(ah, freq, chfreq)) | |
fa1c114f JS |
974 | continue; |
975 | ||
42639fcd BC |
976 | if (!modparam_all_channels && !ath5k_is_standard_channel(ch)) |
977 | continue; | |
978 | ||
d8ee398d LR |
979 | /* Write channel info and increment counter */ |
980 | channels[count].center_freq = freq; | |
a3f4b914 LR |
981 | channels[count].band = (chfreq == CHANNEL_2GHZ) ? |
982 | IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
400ec45a LR |
983 | switch (mode) { |
984 | case AR5K_MODE_11A: | |
985 | case AR5K_MODE_11G: | |
986 | channels[count].hw_value = chfreq | CHANNEL_OFDM; | |
987 | break; | |
988 | case AR5K_MODE_11A_TURBO: | |
989 | case AR5K_MODE_11G_TURBO: | |
990 | channels[count].hw_value = chfreq | | |
991 | CHANNEL_OFDM | CHANNEL_TURBO; | |
992 | break; | |
993 | case AR5K_MODE_11B: | |
d8ee398d LR |
994 | channels[count].hw_value = CHANNEL_B; |
995 | } | |
fa1c114f | 996 | |
fa1c114f JS |
997 | count++; |
998 | max--; | |
999 | } | |
1000 | ||
1001 | return count; | |
1002 | } | |
1003 | ||
63266a65 BR |
1004 | static void |
1005 | ath5k_setup_rate_idx(struct ath5k_softc *sc, struct ieee80211_supported_band *b) | |
1006 | { | |
1007 | u8 i; | |
1008 | ||
1009 | for (i = 0; i < AR5K_MAX_RATES; i++) | |
1010 | sc->rate_idx[b->band][i] = -1; | |
1011 | ||
1012 | for (i = 0; i < b->n_bitrates; i++) { | |
1013 | sc->rate_idx[b->band][b->bitrates[i].hw_value] = i; | |
1014 | if (b->bitrates[i].hw_value_short) | |
1015 | sc->rate_idx[b->band][b->bitrates[i].hw_value_short] = i; | |
1016 | } | |
1017 | } | |
1018 | ||
d8ee398d | 1019 | static int |
63266a65 | 1020 | ath5k_setup_bands(struct ieee80211_hw *hw) |
fa1c114f JS |
1021 | { |
1022 | struct ath5k_softc *sc = hw->priv; | |
d8ee398d | 1023 | struct ath5k_hw *ah = sc->ah; |
63266a65 BR |
1024 | struct ieee80211_supported_band *sband; |
1025 | int max_c, count_c = 0; | |
1026 | int i; | |
fa1c114f | 1027 | |
d8ee398d | 1028 | BUILD_BUG_ON(ARRAY_SIZE(sc->sbands) < IEEE80211_NUM_BANDS); |
d8ee398d | 1029 | max_c = ARRAY_SIZE(sc->channels); |
d8ee398d LR |
1030 | |
1031 | /* 2GHz band */ | |
63266a65 BR |
1032 | sband = &sc->sbands[IEEE80211_BAND_2GHZ]; |
1033 | sband->band = IEEE80211_BAND_2GHZ; | |
1034 | sband->bitrates = &sc->rates[IEEE80211_BAND_2GHZ][0]; | |
fa1c114f | 1035 | |
63266a65 BR |
1036 | if (test_bit(AR5K_MODE_11G, sc->ah->ah_capabilities.cap_mode)) { |
1037 | /* G mode */ | |
1038 | memcpy(sband->bitrates, &ath5k_rates[0], | |
1039 | sizeof(struct ieee80211_rate) * 12); | |
1040 | sband->n_bitrates = 12; | |
fa1c114f | 1041 | |
d8ee398d | 1042 | sband->channels = sc->channels; |
d8ee398d | 1043 | sband->n_channels = ath5k_copy_channels(ah, sband->channels, |
63266a65 | 1044 | AR5K_MODE_11G, max_c); |
fa1c114f | 1045 | |
63266a65 | 1046 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband; |
d8ee398d | 1047 | count_c = sband->n_channels; |
63266a65 BR |
1048 | max_c -= count_c; |
1049 | } else if (test_bit(AR5K_MODE_11B, sc->ah->ah_capabilities.cap_mode)) { | |
1050 | /* B mode */ | |
1051 | memcpy(sband->bitrates, &ath5k_rates[0], | |
1052 | sizeof(struct ieee80211_rate) * 4); | |
1053 | sband->n_bitrates = 4; | |
1054 | ||
1055 | /* 5211 only supports B rates and uses 4bit rate codes | |
1056 | * (e.g normally we have 0x1B for 1M, but on 5211 we have 0x0B) | |
1057 | * fix them up here: | |
1058 | */ | |
1059 | if (ah->ah_version == AR5K_AR5211) { | |
1060 | for (i = 0; i < 4; i++) { | |
1061 | sband->bitrates[i].hw_value = | |
1062 | sband->bitrates[i].hw_value & 0xF; | |
1063 | sband->bitrates[i].hw_value_short = | |
1064 | sband->bitrates[i].hw_value_short & 0xF; | |
1065 | } | |
1066 | } | |
fa1c114f | 1067 | |
63266a65 BR |
1068 | sband->channels = sc->channels; |
1069 | sband->n_channels = ath5k_copy_channels(ah, sband->channels, | |
1070 | AR5K_MODE_11B, max_c); | |
d8ee398d | 1071 | |
63266a65 BR |
1072 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband; |
1073 | count_c = sband->n_channels; | |
d8ee398d | 1074 | max_c -= count_c; |
fa1c114f | 1075 | } |
63266a65 | 1076 | ath5k_setup_rate_idx(sc, sband); |
fa1c114f | 1077 | |
63266a65 | 1078 | /* 5GHz band, A mode */ |
400ec45a | 1079 | if (test_bit(AR5K_MODE_11A, sc->ah->ah_capabilities.cap_mode)) { |
63266a65 BR |
1080 | sband = &sc->sbands[IEEE80211_BAND_5GHZ]; |
1081 | sband->band = IEEE80211_BAND_5GHZ; | |
1082 | sband->bitrates = &sc->rates[IEEE80211_BAND_5GHZ][0]; | |
fa1c114f | 1083 | |
63266a65 BR |
1084 | memcpy(sband->bitrates, &ath5k_rates[4], |
1085 | sizeof(struct ieee80211_rate) * 8); | |
1086 | sband->n_bitrates = 8; | |
fa1c114f | 1087 | |
63266a65 | 1088 | sband->channels = &sc->channels[count_c]; |
d8ee398d LR |
1089 | sband->n_channels = ath5k_copy_channels(ah, sband->channels, |
1090 | AR5K_MODE_11A, max_c); | |
1091 | ||
d8ee398d LR |
1092 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband; |
1093 | } | |
63266a65 | 1094 | ath5k_setup_rate_idx(sc, sband); |
d8ee398d | 1095 | |
b446197c | 1096 | ath5k_debug_dump_bands(sc); |
d8ee398d LR |
1097 | |
1098 | return 0; | |
fa1c114f JS |
1099 | } |
1100 | ||
1101 | /* | |
e30eb4ab JA |
1102 | * Set/change channels. We always reset the chip. |
1103 | * To accomplish this we must first cleanup any pending DMA, | |
1104 | * then restart stuff after a la ath5k_init. | |
be009370 BC |
1105 | * |
1106 | * Called with sc->lock. | |
fa1c114f JS |
1107 | */ |
1108 | static int | |
1109 | ath5k_chan_set(struct ath5k_softc *sc, struct ieee80211_channel *chan) | |
1110 | { | |
d8ee398d LR |
1111 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "(%u MHz) -> (%u MHz)\n", |
1112 | sc->curchan->center_freq, chan->center_freq); | |
1113 | ||
e30eb4ab JA |
1114 | /* |
1115 | * To switch channels clear any pending DMA operations; | |
1116 | * wait long enough for the RX fifo to drain, reset the | |
1117 | * hardware at the new frequency, and then re-enable | |
1118 | * the relevant bits of the h/w. | |
1119 | */ | |
1120 | return ath5k_reset(sc, chan); | |
fa1c114f JS |
1121 | } |
1122 | ||
1123 | static void | |
1124 | ath5k_setcurmode(struct ath5k_softc *sc, unsigned int mode) | |
1125 | { | |
fa1c114f | 1126 | sc->curmode = mode; |
d8ee398d | 1127 | |
400ec45a | 1128 | if (mode == AR5K_MODE_11A) { |
d8ee398d LR |
1129 | sc->curband = &sc->sbands[IEEE80211_BAND_5GHZ]; |
1130 | } else { | |
1131 | sc->curband = &sc->sbands[IEEE80211_BAND_2GHZ]; | |
1132 | } | |
fa1c114f JS |
1133 | } |
1134 | ||
1135 | static void | |
1136 | ath5k_mode_setup(struct ath5k_softc *sc) | |
1137 | { | |
1138 | struct ath5k_hw *ah = sc->ah; | |
1139 | u32 rfilt; | |
1140 | ||
ae6f53f2 BC |
1141 | ah->ah_op_mode = sc->opmode; |
1142 | ||
fa1c114f JS |
1143 | /* configure rx filter */ |
1144 | rfilt = sc->filter_flags; | |
1145 | ath5k_hw_set_rx_filter(ah, rfilt); | |
1146 | ||
1147 | if (ath5k_hw_hasbssidmask(ah)) | |
1148 | ath5k_hw_set_bssid_mask(ah, sc->bssidmask); | |
1149 | ||
1150 | /* configure operational mode */ | |
1151 | ath5k_hw_set_opmode(ah); | |
1152 | ||
fa1c114f JS |
1153 | ATH5K_DBG(sc, ATH5K_DEBUG_MODE, "RX filter 0x%x\n", rfilt); |
1154 | } | |
1155 | ||
d8ee398d | 1156 | static inline int |
63266a65 BR |
1157 | ath5k_hw_to_driver_rix(struct ath5k_softc *sc, int hw_rix) |
1158 | { | |
b7266047 BC |
1159 | int rix; |
1160 | ||
1161 | /* return base rate on errors */ | |
1162 | if (WARN(hw_rix < 0 || hw_rix >= AR5K_MAX_RATES, | |
1163 | "hw_rix out of bounds: %x\n", hw_rix)) | |
1164 | return 0; | |
1165 | ||
1166 | rix = sc->rate_idx[sc->curband->band][hw_rix]; | |
1167 | if (WARN(rix < 0, "invalid hw_rix: %x\n", hw_rix)) | |
1168 | rix = 0; | |
1169 | ||
1170 | return rix; | |
d8ee398d LR |
1171 | } |
1172 | ||
fa1c114f JS |
1173 | /***************\ |
1174 | * Buffers setup * | |
1175 | \***************/ | |
1176 | ||
b6ea0356 BC |
1177 | static |
1178 | struct sk_buff *ath5k_rx_skb_alloc(struct ath5k_softc *sc, dma_addr_t *skb_addr) | |
1179 | { | |
db719718 | 1180 | struct ath_common *common = ath5k_hw_common(sc->ah); |
b6ea0356 | 1181 | struct sk_buff *skb; |
b6ea0356 BC |
1182 | |
1183 | /* | |
1184 | * Allocate buffer with headroom_needed space for the | |
1185 | * fake physical layer header at the start. | |
1186 | */ | |
db719718 | 1187 | skb = ath_rxbuf_alloc(common, |
dd849782 | 1188 | common->rx_bufsize, |
aeb63cfd | 1189 | GFP_ATOMIC); |
b6ea0356 BC |
1190 | |
1191 | if (!skb) { | |
1192 | ATH5K_ERR(sc, "can't alloc skbuff of size %u\n", | |
dd849782 | 1193 | common->rx_bufsize); |
b6ea0356 BC |
1194 | return NULL; |
1195 | } | |
b6ea0356 BC |
1196 | |
1197 | *skb_addr = pci_map_single(sc->pdev, | |
cc861f74 LR |
1198 | skb->data, common->rx_bufsize, |
1199 | PCI_DMA_FROMDEVICE); | |
b6ea0356 BC |
1200 | if (unlikely(pci_dma_mapping_error(sc->pdev, *skb_addr))) { |
1201 | ATH5K_ERR(sc, "%s: DMA mapping failed\n", __func__); | |
1202 | dev_kfree_skb(skb); | |
1203 | return NULL; | |
1204 | } | |
1205 | return skb; | |
1206 | } | |
1207 | ||
fa1c114f JS |
1208 | static int |
1209 | ath5k_rxbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf) | |
1210 | { | |
1211 | struct ath5k_hw *ah = sc->ah; | |
1212 | struct sk_buff *skb = bf->skb; | |
1213 | struct ath5k_desc *ds; | |
1214 | ||
b6ea0356 BC |
1215 | if (!skb) { |
1216 | skb = ath5k_rx_skb_alloc(sc, &bf->skbaddr); | |
1217 | if (!skb) | |
fa1c114f | 1218 | return -ENOMEM; |
fa1c114f | 1219 | bf->skb = skb; |
fa1c114f JS |
1220 | } |
1221 | ||
1222 | /* | |
1223 | * Setup descriptors. For receive we always terminate | |
1224 | * the descriptor list with a self-linked entry so we'll | |
1225 | * not get overrun under high load (as can happen with a | |
1226 | * 5212 when ANI processing enables PHY error frames). | |
1227 | * | |
1228 | * To insure the last descriptor is self-linked we create | |
1229 | * each descriptor as self-linked and add it to the end. As | |
1230 | * each additional descriptor is added the previous self-linked | |
1231 | * entry is ``fixed'' naturally. This should be safe even | |
1232 | * if DMA is happening. When processing RX interrupts we | |
1233 | * never remove/process the last, self-linked, entry on the | |
1234 | * descriptor list. This insures the hardware always has | |
1235 | * someplace to write a new frame. | |
1236 | */ | |
1237 | ds = bf->desc; | |
1238 | ds->ds_link = bf->daddr; /* link to self */ | |
1239 | ds->ds_data = bf->skbaddr; | |
c6e387a2 | 1240 | ah->ah_setup_rx_desc(ah, ds, |
fa1c114f JS |
1241 | skb_tailroom(skb), /* buffer size */ |
1242 | 0); | |
1243 | ||
1244 | if (sc->rxlink != NULL) | |
1245 | *sc->rxlink = bf->daddr; | |
1246 | sc->rxlink = &ds->ds_link; | |
1247 | return 0; | |
1248 | } | |
1249 | ||
2ac2927a BC |
1250 | static enum ath5k_pkt_type get_hw_packet_type(struct sk_buff *skb) |
1251 | { | |
1252 | struct ieee80211_hdr *hdr; | |
1253 | enum ath5k_pkt_type htype; | |
1254 | __le16 fc; | |
1255 | ||
1256 | hdr = (struct ieee80211_hdr *)skb->data; | |
1257 | fc = hdr->frame_control; | |
1258 | ||
1259 | if (ieee80211_is_beacon(fc)) | |
1260 | htype = AR5K_PKT_TYPE_BEACON; | |
1261 | else if (ieee80211_is_probe_resp(fc)) | |
1262 | htype = AR5K_PKT_TYPE_PROBE_RESP; | |
1263 | else if (ieee80211_is_atim(fc)) | |
1264 | htype = AR5K_PKT_TYPE_ATIM; | |
1265 | else if (ieee80211_is_pspoll(fc)) | |
1266 | htype = AR5K_PKT_TYPE_PSPOLL; | |
1267 | else | |
1268 | htype = AR5K_PKT_TYPE_NORMAL; | |
1269 | ||
1270 | return htype; | |
1271 | } | |
1272 | ||
fa1c114f | 1273 | static int |
cec8db23 BC |
1274 | ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf, |
1275 | struct ath5k_txq *txq) | |
fa1c114f JS |
1276 | { |
1277 | struct ath5k_hw *ah = sc->ah; | |
fa1c114f JS |
1278 | struct ath5k_desc *ds = bf->desc; |
1279 | struct sk_buff *skb = bf->skb; | |
a888d52d | 1280 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
fa1c114f | 1281 | unsigned int pktlen, flags, keyidx = AR5K_TXKEYIX_INVALID; |
2f7fe870 FF |
1282 | struct ieee80211_rate *rate; |
1283 | unsigned int mrr_rate[3], mrr_tries[3]; | |
1284 | int i, ret; | |
8902ff4e | 1285 | u16 hw_rate; |
07c1e852 BC |
1286 | u16 cts_rate = 0; |
1287 | u16 duration = 0; | |
8902ff4e | 1288 | u8 rc_flags; |
fa1c114f JS |
1289 | |
1290 | flags = AR5K_TXDESC_INTREQ | AR5K_TXDESC_CLRDMASK; | |
e039fa4a | 1291 | |
fa1c114f JS |
1292 | /* XXX endianness */ |
1293 | bf->skbaddr = pci_map_single(sc->pdev, skb->data, skb->len, | |
1294 | PCI_DMA_TODEVICE); | |
1295 | ||
8902ff4e BC |
1296 | rate = ieee80211_get_tx_rate(sc->hw, info); |
1297 | ||
e039fa4a | 1298 | if (info->flags & IEEE80211_TX_CTL_NO_ACK) |
fa1c114f JS |
1299 | flags |= AR5K_TXDESC_NOACK; |
1300 | ||
8902ff4e BC |
1301 | rc_flags = info->control.rates[0].flags; |
1302 | hw_rate = (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) ? | |
1303 | rate->hw_value_short : rate->hw_value; | |
1304 | ||
281c56dd | 1305 | pktlen = skb->len; |
fa1c114f | 1306 | |
8f655dde NK |
1307 | /* FIXME: If we are in g mode and rate is a CCK rate |
1308 | * subtract ah->ah_txpower.txp_cck_ofdm_pwr_delta | |
1309 | * from tx power (value is in dB units already) */ | |
362695e1 BC |
1310 | if (info->control.hw_key) { |
1311 | keyidx = info->control.hw_key->hw_key_idx; | |
1312 | pktlen += info->control.hw_key->icv_len; | |
1313 | } | |
07c1e852 BC |
1314 | if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) { |
1315 | flags |= AR5K_TXDESC_RTSENA; | |
1316 | cts_rate = ieee80211_get_rts_cts_rate(sc->hw, info)->hw_value; | |
1317 | duration = le16_to_cpu(ieee80211_rts_duration(sc->hw, | |
1318 | sc->vif, pktlen, info)); | |
1319 | } | |
1320 | if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { | |
1321 | flags |= AR5K_TXDESC_CTSENA; | |
1322 | cts_rate = ieee80211_get_rts_cts_rate(sc->hw, info)->hw_value; | |
1323 | duration = le16_to_cpu(ieee80211_ctstoself_duration(sc->hw, | |
1324 | sc->vif, pktlen, info)); | |
1325 | } | |
fa1c114f | 1326 | ret = ah->ah_setup_tx_desc(ah, ds, pktlen, |
2ac2927a BC |
1327 | ieee80211_get_hdrlen_from_skb(skb), |
1328 | get_hw_packet_type(skb), | |
2e92e6f2 | 1329 | (sc->power_level * 2), |
8902ff4e | 1330 | hw_rate, |
2bed03eb | 1331 | info->control.rates[0].count, keyidx, ah->ah_tx_ant, flags, |
07c1e852 | 1332 | cts_rate, duration); |
fa1c114f JS |
1333 | if (ret) |
1334 | goto err_unmap; | |
1335 | ||
2f7fe870 FF |
1336 | memset(mrr_rate, 0, sizeof(mrr_rate)); |
1337 | memset(mrr_tries, 0, sizeof(mrr_tries)); | |
1338 | for (i = 0; i < 3; i++) { | |
1339 | rate = ieee80211_get_alt_retry_rate(sc->hw, info, i); | |
1340 | if (!rate) | |
1341 | break; | |
1342 | ||
1343 | mrr_rate[i] = rate->hw_value; | |
e6a9854b | 1344 | mrr_tries[i] = info->control.rates[i + 1].count; |
2f7fe870 FF |
1345 | } |
1346 | ||
1347 | ah->ah_setup_mrr_tx_desc(ah, ds, | |
1348 | mrr_rate[0], mrr_tries[0], | |
1349 | mrr_rate[1], mrr_tries[1], | |
1350 | mrr_rate[2], mrr_tries[2]); | |
1351 | ||
fa1c114f JS |
1352 | ds->ds_link = 0; |
1353 | ds->ds_data = bf->skbaddr; | |
1354 | ||
1355 | spin_lock_bh(&txq->lock); | |
1356 | list_add_tail(&bf->list, &txq->q); | |
fa1c114f | 1357 | if (txq->link == NULL) /* is this first packet? */ |
c6e387a2 | 1358 | ath5k_hw_set_txdp(ah, txq->qnum, bf->daddr); |
fa1c114f JS |
1359 | else /* no, so only link it */ |
1360 | *txq->link = bf->daddr; | |
1361 | ||
1362 | txq->link = &ds->ds_link; | |
c6e387a2 | 1363 | ath5k_hw_start_tx_dma(ah, txq->qnum); |
274c7c36 | 1364 | mmiowb(); |
fa1c114f JS |
1365 | spin_unlock_bh(&txq->lock); |
1366 | ||
1367 | return 0; | |
1368 | err_unmap: | |
1369 | pci_unmap_single(sc->pdev, bf->skbaddr, skb->len, PCI_DMA_TODEVICE); | |
1370 | return ret; | |
1371 | } | |
1372 | ||
1373 | /*******************\ | |
1374 | * Descriptors setup * | |
1375 | \*******************/ | |
1376 | ||
1377 | static int | |
1378 | ath5k_desc_alloc(struct ath5k_softc *sc, struct pci_dev *pdev) | |
1379 | { | |
1380 | struct ath5k_desc *ds; | |
1381 | struct ath5k_buf *bf; | |
1382 | dma_addr_t da; | |
1383 | unsigned int i; | |
1384 | int ret; | |
1385 | ||
1386 | /* allocate descriptors */ | |
1387 | sc->desc_len = sizeof(struct ath5k_desc) * | |
1388 | (ATH_TXBUF + ATH_RXBUF + ATH_BCBUF + 1); | |
1389 | sc->desc = pci_alloc_consistent(pdev, sc->desc_len, &sc->desc_daddr); | |
1390 | if (sc->desc == NULL) { | |
1391 | ATH5K_ERR(sc, "can't allocate descriptors\n"); | |
1392 | ret = -ENOMEM; | |
1393 | goto err; | |
1394 | } | |
1395 | ds = sc->desc; | |
1396 | da = sc->desc_daddr; | |
1397 | ATH5K_DBG(sc, ATH5K_DEBUG_ANY, "DMA map: %p (%zu) -> %llx\n", | |
1398 | ds, sc->desc_len, (unsigned long long)sc->desc_daddr); | |
1399 | ||
1400 | bf = kcalloc(1 + ATH_TXBUF + ATH_RXBUF + ATH_BCBUF, | |
1401 | sizeof(struct ath5k_buf), GFP_KERNEL); | |
1402 | if (bf == NULL) { | |
1403 | ATH5K_ERR(sc, "can't allocate bufptr\n"); | |
1404 | ret = -ENOMEM; | |
1405 | goto err_free; | |
1406 | } | |
1407 | sc->bufptr = bf; | |
1408 | ||
1409 | INIT_LIST_HEAD(&sc->rxbuf); | |
1410 | for (i = 0; i < ATH_RXBUF; i++, bf++, ds++, da += sizeof(*ds)) { | |
1411 | bf->desc = ds; | |
1412 | bf->daddr = da; | |
1413 | list_add_tail(&bf->list, &sc->rxbuf); | |
1414 | } | |
1415 | ||
1416 | INIT_LIST_HEAD(&sc->txbuf); | |
1417 | sc->txbuf_len = ATH_TXBUF; | |
1418 | for (i = 0; i < ATH_TXBUF; i++, bf++, ds++, | |
1419 | da += sizeof(*ds)) { | |
1420 | bf->desc = ds; | |
1421 | bf->daddr = da; | |
1422 | list_add_tail(&bf->list, &sc->txbuf); | |
1423 | } | |
1424 | ||
1425 | /* beacon buffer */ | |
1426 | bf->desc = ds; | |
1427 | bf->daddr = da; | |
1428 | sc->bbuf = bf; | |
1429 | ||
1430 | return 0; | |
1431 | err_free: | |
1432 | pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr); | |
1433 | err: | |
1434 | sc->desc = NULL; | |
1435 | return ret; | |
1436 | } | |
1437 | ||
1438 | static void | |
1439 | ath5k_desc_free(struct ath5k_softc *sc, struct pci_dev *pdev) | |
1440 | { | |
1441 | struct ath5k_buf *bf; | |
1442 | ||
1443 | ath5k_txbuf_free(sc, sc->bbuf); | |
1444 | list_for_each_entry(bf, &sc->txbuf, list) | |
1445 | ath5k_txbuf_free(sc, bf); | |
1446 | list_for_each_entry(bf, &sc->rxbuf, list) | |
a6c8d375 | 1447 | ath5k_rxbuf_free(sc, bf); |
fa1c114f JS |
1448 | |
1449 | /* Free memory associated with all descriptors */ | |
1450 | pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr); | |
1451 | ||
1452 | kfree(sc->bufptr); | |
1453 | sc->bufptr = NULL; | |
1454 | } | |
1455 | ||
1456 | ||
1457 | ||
1458 | ||
1459 | ||
1460 | /**************\ | |
1461 | * Queues setup * | |
1462 | \**************/ | |
1463 | ||
1464 | static struct ath5k_txq * | |
1465 | ath5k_txq_setup(struct ath5k_softc *sc, | |
1466 | int qtype, int subtype) | |
1467 | { | |
1468 | struct ath5k_hw *ah = sc->ah; | |
1469 | struct ath5k_txq *txq; | |
1470 | struct ath5k_txq_info qi = { | |
1471 | .tqi_subtype = subtype, | |
1472 | .tqi_aifs = AR5K_TXQ_USEDEFAULT, | |
1473 | .tqi_cw_min = AR5K_TXQ_USEDEFAULT, | |
1474 | .tqi_cw_max = AR5K_TXQ_USEDEFAULT | |
1475 | }; | |
1476 | int qnum; | |
1477 | ||
1478 | /* | |
1479 | * Enable interrupts only for EOL and DESC conditions. | |
1480 | * We mark tx descriptors to receive a DESC interrupt | |
1481 | * when a tx queue gets deep; otherwise waiting for the | |
1482 | * EOL to reap descriptors. Note that this is done to | |
1483 | * reduce interrupt load and this only defers reaping | |
1484 | * descriptors, never transmitting frames. Aside from | |
1485 | * reducing interrupts this also permits more concurrency. | |
1486 | * The only potential downside is if the tx queue backs | |
1487 | * up in which case the top half of the kernel may backup | |
1488 | * due to a lack of tx descriptors. | |
1489 | */ | |
1490 | qi.tqi_flags = AR5K_TXQ_FLAG_TXEOLINT_ENABLE | | |
1491 | AR5K_TXQ_FLAG_TXDESCINT_ENABLE; | |
1492 | qnum = ath5k_hw_setup_tx_queue(ah, qtype, &qi); | |
1493 | if (qnum < 0) { | |
1494 | /* | |
1495 | * NB: don't print a message, this happens | |
1496 | * normally on parts with too few tx queues | |
1497 | */ | |
1498 | return ERR_PTR(qnum); | |
1499 | } | |
1500 | if (qnum >= ARRAY_SIZE(sc->txqs)) { | |
1501 | ATH5K_ERR(sc, "hw qnum %u out of range, max %tu!\n", | |
1502 | qnum, ARRAY_SIZE(sc->txqs)); | |
1503 | ath5k_hw_release_tx_queue(ah, qnum); | |
1504 | return ERR_PTR(-EINVAL); | |
1505 | } | |
1506 | txq = &sc->txqs[qnum]; | |
1507 | if (!txq->setup) { | |
1508 | txq->qnum = qnum; | |
1509 | txq->link = NULL; | |
1510 | INIT_LIST_HEAD(&txq->q); | |
1511 | spin_lock_init(&txq->lock); | |
1512 | txq->setup = true; | |
1513 | } | |
1514 | return &sc->txqs[qnum]; | |
1515 | } | |
1516 | ||
1517 | static int | |
1518 | ath5k_beaconq_setup(struct ath5k_hw *ah) | |
1519 | { | |
1520 | struct ath5k_txq_info qi = { | |
1521 | .tqi_aifs = AR5K_TXQ_USEDEFAULT, | |
1522 | .tqi_cw_min = AR5K_TXQ_USEDEFAULT, | |
1523 | .tqi_cw_max = AR5K_TXQ_USEDEFAULT, | |
1524 | /* NB: for dynamic turbo, don't enable any other interrupts */ | |
1525 | .tqi_flags = AR5K_TXQ_FLAG_TXDESCINT_ENABLE | |
1526 | }; | |
1527 | ||
1528 | return ath5k_hw_setup_tx_queue(ah, AR5K_TX_QUEUE_BEACON, &qi); | |
1529 | } | |
1530 | ||
1531 | static int | |
1532 | ath5k_beaconq_config(struct ath5k_softc *sc) | |
1533 | { | |
1534 | struct ath5k_hw *ah = sc->ah; | |
1535 | struct ath5k_txq_info qi; | |
1536 | int ret; | |
1537 | ||
1538 | ret = ath5k_hw_get_tx_queueprops(ah, sc->bhalq, &qi); | |
1539 | if (ret) | |
a951ae21 BC |
1540 | goto err; |
1541 | ||
05c914fe JB |
1542 | if (sc->opmode == NL80211_IFTYPE_AP || |
1543 | sc->opmode == NL80211_IFTYPE_MESH_POINT) { | |
fa1c114f JS |
1544 | /* |
1545 | * Always burst out beacon and CAB traffic | |
1546 | * (aifs = cwmin = cwmax = 0) | |
1547 | */ | |
1548 | qi.tqi_aifs = 0; | |
1549 | qi.tqi_cw_min = 0; | |
1550 | qi.tqi_cw_max = 0; | |
05c914fe | 1551 | } else if (sc->opmode == NL80211_IFTYPE_ADHOC) { |
6d91e1d8 BR |
1552 | /* |
1553 | * Adhoc mode; backoff between 0 and (2 * cw_min). | |
1554 | */ | |
1555 | qi.tqi_aifs = 0; | |
1556 | qi.tqi_cw_min = 0; | |
1557 | qi.tqi_cw_max = 2 * ah->ah_cw_min; | |
fa1c114f JS |
1558 | } |
1559 | ||
6d91e1d8 BR |
1560 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
1561 | "beacon queueprops tqi_aifs:%d tqi_cw_min:%d tqi_cw_max:%d\n", | |
1562 | qi.tqi_aifs, qi.tqi_cw_min, qi.tqi_cw_max); | |
1563 | ||
c6e387a2 | 1564 | ret = ath5k_hw_set_tx_queueprops(ah, sc->bhalq, &qi); |
fa1c114f JS |
1565 | if (ret) { |
1566 | ATH5K_ERR(sc, "%s: unable to update parameters for beacon " | |
1567 | "hardware queue!\n", __func__); | |
a951ae21 | 1568 | goto err; |
fa1c114f | 1569 | } |
a951ae21 BC |
1570 | ret = ath5k_hw_reset_tx_queue(ah, sc->bhalq); /* push to h/w */ |
1571 | if (ret) | |
1572 | goto err; | |
fa1c114f | 1573 | |
a951ae21 BC |
1574 | /* reconfigure cabq with ready time to 80% of beacon_interval */ |
1575 | ret = ath5k_hw_get_tx_queueprops(ah, AR5K_TX_QUEUE_ID_CAB, &qi); | |
1576 | if (ret) | |
1577 | goto err; | |
1578 | ||
1579 | qi.tqi_ready_time = (sc->bintval * 80) / 100; | |
1580 | ret = ath5k_hw_set_tx_queueprops(ah, AR5K_TX_QUEUE_ID_CAB, &qi); | |
1581 | if (ret) | |
1582 | goto err; | |
1583 | ||
1584 | ret = ath5k_hw_reset_tx_queue(ah, AR5K_TX_QUEUE_ID_CAB); | |
1585 | err: | |
1586 | return ret; | |
fa1c114f JS |
1587 | } |
1588 | ||
1589 | static void | |
1590 | ath5k_txq_drainq(struct ath5k_softc *sc, struct ath5k_txq *txq) | |
1591 | { | |
1592 | struct ath5k_buf *bf, *bf0; | |
1593 | ||
1594 | /* | |
1595 | * NB: this assumes output has been stopped and | |
1596 | * we do not need to block ath5k_tx_tasklet | |
1597 | */ | |
1598 | spin_lock_bh(&txq->lock); | |
1599 | list_for_each_entry_safe(bf, bf0, &txq->q, list) { | |
b47f407b | 1600 | ath5k_debug_printtxbuf(sc, bf); |
fa1c114f JS |
1601 | |
1602 | ath5k_txbuf_free(sc, bf); | |
1603 | ||
1604 | spin_lock_bh(&sc->txbuflock); | |
fa1c114f JS |
1605 | list_move_tail(&bf->list, &sc->txbuf); |
1606 | sc->txbuf_len++; | |
1607 | spin_unlock_bh(&sc->txbuflock); | |
1608 | } | |
1609 | txq->link = NULL; | |
1610 | spin_unlock_bh(&txq->lock); | |
1611 | } | |
1612 | ||
1613 | /* | |
1614 | * Drain the transmit queues and reclaim resources. | |
1615 | */ | |
1616 | static void | |
1617 | ath5k_txq_cleanup(struct ath5k_softc *sc) | |
1618 | { | |
1619 | struct ath5k_hw *ah = sc->ah; | |
1620 | unsigned int i; | |
1621 | ||
1622 | /* XXX return value */ | |
1623 | if (likely(!test_bit(ATH_STAT_INVALID, sc->status))) { | |
1624 | /* don't touch the hardware if marked invalid */ | |
1625 | ath5k_hw_stop_tx_dma(ah, sc->bhalq); | |
1626 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "beacon queue %x\n", | |
c6e387a2 | 1627 | ath5k_hw_get_txdp(ah, sc->bhalq)); |
fa1c114f JS |
1628 | for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) |
1629 | if (sc->txqs[i].setup) { | |
1630 | ath5k_hw_stop_tx_dma(ah, sc->txqs[i].qnum); | |
1631 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "txq [%u] %x, " | |
1632 | "link %p\n", | |
1633 | sc->txqs[i].qnum, | |
c6e387a2 | 1634 | ath5k_hw_get_txdp(ah, |
fa1c114f JS |
1635 | sc->txqs[i].qnum), |
1636 | sc->txqs[i].link); | |
1637 | } | |
1638 | } | |
36d6825b | 1639 | ieee80211_wake_queues(sc->hw); /* XXX move to callers */ |
fa1c114f JS |
1640 | |
1641 | for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) | |
1642 | if (sc->txqs[i].setup) | |
1643 | ath5k_txq_drainq(sc, &sc->txqs[i]); | |
1644 | } | |
1645 | ||
1646 | static void | |
1647 | ath5k_txq_release(struct ath5k_softc *sc) | |
1648 | { | |
1649 | struct ath5k_txq *txq = sc->txqs; | |
1650 | unsigned int i; | |
1651 | ||
1652 | for (i = 0; i < ARRAY_SIZE(sc->txqs); i++, txq++) | |
1653 | if (txq->setup) { | |
1654 | ath5k_hw_release_tx_queue(sc->ah, txq->qnum); | |
1655 | txq->setup = false; | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | ||
1660 | ||
1661 | ||
1662 | /*************\ | |
1663 | * RX Handling * | |
1664 | \*************/ | |
1665 | ||
1666 | /* | |
1667 | * Enable the receive h/w following a reset. | |
1668 | */ | |
1669 | static int | |
1670 | ath5k_rx_start(struct ath5k_softc *sc) | |
1671 | { | |
1672 | struct ath5k_hw *ah = sc->ah; | |
db719718 | 1673 | struct ath_common *common = ath5k_hw_common(ah); |
fa1c114f JS |
1674 | struct ath5k_buf *bf; |
1675 | int ret; | |
1676 | ||
cc861f74 | 1677 | common->rx_bufsize = roundup(IEEE80211_MAX_LEN, common->cachelsz); |
fa1c114f | 1678 | |
cc861f74 LR |
1679 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "cachelsz %u rx_bufsize %u\n", |
1680 | common->cachelsz, common->rx_bufsize); | |
fa1c114f | 1681 | |
fa1c114f | 1682 | spin_lock_bh(&sc->rxbuflock); |
26925042 | 1683 | sc->rxlink = NULL; |
fa1c114f JS |
1684 | list_for_each_entry(bf, &sc->rxbuf, list) { |
1685 | ret = ath5k_rxbuf_setup(sc, bf); | |
1686 | if (ret != 0) { | |
1687 | spin_unlock_bh(&sc->rxbuflock); | |
1688 | goto err; | |
1689 | } | |
1690 | } | |
1691 | bf = list_first_entry(&sc->rxbuf, struct ath5k_buf, list); | |
26925042 | 1692 | ath5k_hw_set_rxdp(ah, bf->daddr); |
fa1c114f JS |
1693 | spin_unlock_bh(&sc->rxbuflock); |
1694 | ||
c6e387a2 | 1695 | ath5k_hw_start_rx_dma(ah); /* enable recv descriptors */ |
fa1c114f JS |
1696 | ath5k_mode_setup(sc); /* set filters, etc. */ |
1697 | ath5k_hw_start_rx_pcu(ah); /* re-enable PCU/DMA engine */ | |
1698 | ||
1699 | return 0; | |
1700 | err: | |
1701 | return ret; | |
1702 | } | |
1703 | ||
1704 | /* | |
1705 | * Disable the receive h/w in preparation for a reset. | |
1706 | */ | |
1707 | static void | |
1708 | ath5k_rx_stop(struct ath5k_softc *sc) | |
1709 | { | |
1710 | struct ath5k_hw *ah = sc->ah; | |
1711 | ||
c6e387a2 | 1712 | ath5k_hw_stop_rx_pcu(ah); /* disable PCU */ |
fa1c114f JS |
1713 | ath5k_hw_set_rx_filter(ah, 0); /* clear recv filter */ |
1714 | ath5k_hw_stop_rx_dma(ah); /* disable DMA engine */ | |
fa1c114f JS |
1715 | |
1716 | ath5k_debug_printrxbuffs(sc, ah); | |
1717 | ||
1718 | sc->rxlink = NULL; /* just in case */ | |
1719 | } | |
1720 | ||
1721 | static unsigned int | |
1722 | ath5k_rx_decrypted(struct ath5k_softc *sc, struct ath5k_desc *ds, | |
b47f407b | 1723 | struct sk_buff *skb, struct ath5k_rx_status *rs) |
fa1c114f | 1724 | { |
dc1e001b LR |
1725 | struct ath5k_hw *ah = sc->ah; |
1726 | struct ath_common *common = ath5k_hw_common(ah); | |
fa1c114f | 1727 | struct ieee80211_hdr *hdr = (void *)skb->data; |
798ee985 | 1728 | unsigned int keyix, hlen; |
fa1c114f | 1729 | |
b47f407b BR |
1730 | if (!(rs->rs_status & AR5K_RXERR_DECRYPT) && |
1731 | rs->rs_keyix != AR5K_RXKEYIX_INVALID) | |
fa1c114f JS |
1732 | return RX_FLAG_DECRYPTED; |
1733 | ||
1734 | /* Apparently when a default key is used to decrypt the packet | |
1735 | the hw does not set the index used to decrypt. In such cases | |
1736 | get the index from the packet. */ | |
798ee985 | 1737 | hlen = ieee80211_hdrlen(hdr->frame_control); |
24b56e70 HH |
1738 | if (ieee80211_has_protected(hdr->frame_control) && |
1739 | !(rs->rs_status & AR5K_RXERR_DECRYPT) && | |
1740 | skb->len >= hlen + 4) { | |
fa1c114f JS |
1741 | keyix = skb->data[hlen + 3] >> 6; |
1742 | ||
dc1e001b | 1743 | if (test_bit(keyix, common->keymap)) |
fa1c114f JS |
1744 | return RX_FLAG_DECRYPTED; |
1745 | } | |
1746 | ||
1747 | return 0; | |
1748 | } | |
1749 | ||
036cd1ec BR |
1750 | |
1751 | static void | |
6ba81c2c BR |
1752 | ath5k_check_ibss_tsf(struct ath5k_softc *sc, struct sk_buff *skb, |
1753 | struct ieee80211_rx_status *rxs) | |
036cd1ec | 1754 | { |
954fecea | 1755 | struct ath_common *common = ath5k_hw_common(sc->ah); |
6ba81c2c | 1756 | u64 tsf, bc_tstamp; |
036cd1ec BR |
1757 | u32 hw_tu; |
1758 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; | |
1759 | ||
24b56e70 | 1760 | if (ieee80211_is_beacon(mgmt->frame_control) && |
38c07b43 | 1761 | le16_to_cpu(mgmt->u.beacon.capab_info) & WLAN_CAPABILITY_IBSS && |
954fecea | 1762 | memcmp(mgmt->bssid, common->curbssid, ETH_ALEN) == 0) { |
036cd1ec | 1763 | /* |
6ba81c2c BR |
1764 | * Received an IBSS beacon with the same BSSID. Hardware *must* |
1765 | * have updated the local TSF. We have to work around various | |
1766 | * hardware bugs, though... | |
036cd1ec | 1767 | */ |
6ba81c2c BR |
1768 | tsf = ath5k_hw_get_tsf64(sc->ah); |
1769 | bc_tstamp = le64_to_cpu(mgmt->u.beacon.timestamp); | |
1770 | hw_tu = TSF_TO_TU(tsf); | |
1771 | ||
1772 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, | |
1773 | "beacon %llx mactime %llx (diff %lld) tsf now %llx\n", | |
06501d29 JL |
1774 | (unsigned long long)bc_tstamp, |
1775 | (unsigned long long)rxs->mactime, | |
1776 | (unsigned long long)(rxs->mactime - bc_tstamp), | |
1777 | (unsigned long long)tsf); | |
6ba81c2c BR |
1778 | |
1779 | /* | |
1780 | * Sometimes the HW will give us a wrong tstamp in the rx | |
1781 | * status, causing the timestamp extension to go wrong. | |
1782 | * (This seems to happen especially with beacon frames bigger | |
1783 | * than 78 byte (incl. FCS)) | |
1784 | * But we know that the receive timestamp must be later than the | |
1785 | * timestamp of the beacon since HW must have synced to that. | |
1786 | * | |
1787 | * NOTE: here we assume mactime to be after the frame was | |
1788 | * received, not like mac80211 which defines it at the start. | |
1789 | */ | |
1790 | if (bc_tstamp > rxs->mactime) { | |
036cd1ec | 1791 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, |
6ba81c2c | 1792 | "fixing mactime from %llx to %llx\n", |
06501d29 JL |
1793 | (unsigned long long)rxs->mactime, |
1794 | (unsigned long long)tsf); | |
6ba81c2c | 1795 | rxs->mactime = tsf; |
036cd1ec | 1796 | } |
6ba81c2c BR |
1797 | |
1798 | /* | |
1799 | * Local TSF might have moved higher than our beacon timers, | |
1800 | * in that case we have to update them to continue sending | |
1801 | * beacons. This also takes care of synchronizing beacon sending | |
1802 | * times with other stations. | |
1803 | */ | |
1804 | if (hw_tu >= sc->nexttbtt) | |
1805 | ath5k_beacon_update_timers(sc, bc_tstamp); | |
036cd1ec BR |
1806 | } |
1807 | } | |
1808 | ||
fa1c114f JS |
1809 | static void |
1810 | ath5k_tasklet_rx(unsigned long data) | |
1811 | { | |
1c5256bb | 1812 | struct ieee80211_rx_status *rxs; |
b47f407b | 1813 | struct ath5k_rx_status rs = {}; |
b6ea0356 BC |
1814 | struct sk_buff *skb, *next_skb; |
1815 | dma_addr_t next_skb_addr; | |
fa1c114f | 1816 | struct ath5k_softc *sc = (void *)data; |
cc861f74 LR |
1817 | struct ath5k_hw *ah = sc->ah; |
1818 | struct ath_common *common = ath5k_hw_common(ah); | |
c57ca815 | 1819 | struct ath5k_buf *bf; |
fa1c114f | 1820 | struct ath5k_desc *ds; |
fa1c114f JS |
1821 | int ret; |
1822 | int hdrlen; | |
0fe45b1d | 1823 | int padsize; |
1c5256bb | 1824 | int rx_flag; |
fa1c114f JS |
1825 | |
1826 | spin_lock(&sc->rxbuflock); | |
3a0f2c87 JS |
1827 | if (list_empty(&sc->rxbuf)) { |
1828 | ATH5K_WARN(sc, "empty rx buf pool\n"); | |
1829 | goto unlock; | |
1830 | } | |
fa1c114f | 1831 | do { |
1c5256bb | 1832 | rx_flag = 0; |
d6894b5b | 1833 | |
fa1c114f JS |
1834 | bf = list_first_entry(&sc->rxbuf, struct ath5k_buf, list); |
1835 | BUG_ON(bf->skb == NULL); | |
1836 | skb = bf->skb; | |
1837 | ds = bf->desc; | |
1838 | ||
c57ca815 BC |
1839 | /* bail if HW is still using self-linked descriptor */ |
1840 | if (ath5k_hw_get_rxdp(sc->ah) == bf->daddr) | |
1841 | break; | |
fa1c114f | 1842 | |
b47f407b | 1843 | ret = sc->ah->ah_proc_rx_desc(sc->ah, ds, &rs); |
fa1c114f JS |
1844 | if (unlikely(ret == -EINPROGRESS)) |
1845 | break; | |
1846 | else if (unlikely(ret)) { | |
1847 | ATH5K_ERR(sc, "error in processing rx descriptor\n"); | |
65872e6b | 1848 | spin_unlock(&sc->rxbuflock); |
fa1c114f JS |
1849 | return; |
1850 | } | |
1851 | ||
b47f407b | 1852 | if (unlikely(rs.rs_more)) { |
fa1c114f JS |
1853 | ATH5K_WARN(sc, "unsupported jumbo\n"); |
1854 | goto next; | |
1855 | } | |
1856 | ||
b47f407b BR |
1857 | if (unlikely(rs.rs_status)) { |
1858 | if (rs.rs_status & AR5K_RXERR_PHY) | |
fa1c114f | 1859 | goto next; |
b47f407b | 1860 | if (rs.rs_status & AR5K_RXERR_DECRYPT) { |
fa1c114f JS |
1861 | /* |
1862 | * Decrypt error. If the error occurred | |
1863 | * because there was no hardware key, then | |
1864 | * let the frame through so the upper layers | |
1865 | * can process it. This is necessary for 5210 | |
1866 | * parts which have no way to setup a ``clear'' | |
1867 | * key cache entry. | |
1868 | * | |
1869 | * XXX do key cache faulting | |
1870 | */ | |
b47f407b BR |
1871 | if (rs.rs_keyix == AR5K_RXKEYIX_INVALID && |
1872 | !(rs.rs_status & AR5K_RXERR_CRC)) | |
fa1c114f JS |
1873 | goto accept; |
1874 | } | |
b47f407b | 1875 | if (rs.rs_status & AR5K_RXERR_MIC) { |
1c5256bb | 1876 | rx_flag |= RX_FLAG_MMIC_ERROR; |
fa1c114f JS |
1877 | goto accept; |
1878 | } | |
1879 | ||
1880 | /* let crypto-error packets fall through in MNTR */ | |
b47f407b BR |
1881 | if ((rs.rs_status & |
1882 | ~(AR5K_RXERR_DECRYPT|AR5K_RXERR_MIC)) || | |
05c914fe | 1883 | sc->opmode != NL80211_IFTYPE_MONITOR) |
fa1c114f JS |
1884 | goto next; |
1885 | } | |
1886 | accept: | |
b6ea0356 BC |
1887 | next_skb = ath5k_rx_skb_alloc(sc, &next_skb_addr); |
1888 | ||
1889 | /* | |
1890 | * If we can't replace bf->skb with a new skb under memory | |
1891 | * pressure, just skip this packet | |
1892 | */ | |
1893 | if (!next_skb) | |
1894 | goto next; | |
1895 | ||
cc861f74 | 1896 | pci_unmap_single(sc->pdev, bf->skbaddr, common->rx_bufsize, |
fa1c114f | 1897 | PCI_DMA_FROMDEVICE); |
b47f407b | 1898 | skb_put(skb, rs.rs_datalen); |
fa1c114f | 1899 | |
0fe45b1d BP |
1900 | /* The MAC header is padded to have 32-bit boundary if the |
1901 | * packet payload is non-zero. The general calculation for | |
1902 | * padsize would take into account odd header lengths: | |
1903 | * padsize = (4 - hdrlen % 4) % 4; However, since only | |
1904 | * even-length headers are used, padding can only be 0 or 2 | |
1905 | * bytes and we can optimize this a bit. In addition, we must | |
1906 | * not try to remove padding from short control frames that do | |
1907 | * not have payload. */ | |
fa1c114f | 1908 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); |
fd6effca BC |
1909 | padsize = ath5k_pad_size(hdrlen); |
1910 | if (padsize) { | |
0fe45b1d BP |
1911 | memmove(skb->data + padsize, skb->data, hdrlen); |
1912 | skb_pull(skb, padsize); | |
fa1c114f | 1913 | } |
1c5256bb | 1914 | rxs = IEEE80211_SKB_RXCB(skb); |
fa1c114f | 1915 | |
c0e1899b BR |
1916 | /* |
1917 | * always extend the mac timestamp, since this information is | |
1918 | * also needed for proper IBSS merging. | |
1919 | * | |
1920 | * XXX: it might be too late to do it here, since rs_tstamp is | |
1921 | * 15bit only. that means TSF extension has to be done within | |
1922 | * 32768usec (about 32ms). it might be necessary to move this to | |
1923 | * the interrupt handler, like it is done in madwifi. | |
e14296ca BR |
1924 | * |
1925 | * Unfortunately we don't know when the hardware takes the rx | |
1926 | * timestamp (beginning of phy frame, data frame, end of rx?). | |
1927 | * The only thing we know is that it is hardware specific... | |
1928 | * On AR5213 it seems the rx timestamp is at the end of the | |
1929 | * frame, but i'm not sure. | |
1930 | * | |
1931 | * NOTE: mac80211 defines mactime at the beginning of the first | |
1932 | * data symbol. Since we don't have any time references it's | |
1933 | * impossible to comply to that. This affects IBSS merge only | |
1934 | * right now, so it's not too bad... | |
c0e1899b | 1935 | */ |
1c5256bb BC |
1936 | rxs->mactime = ath5k_extend_tsf(sc->ah, rs.rs_tstamp); |
1937 | rxs->flag = rx_flag | RX_FLAG_TSFT; | |
c0e1899b | 1938 | |
1c5256bb BC |
1939 | rxs->freq = sc->curchan->center_freq; |
1940 | rxs->band = sc->curband->band; | |
fa1c114f | 1941 | |
1c5256bb BC |
1942 | rxs->noise = sc->ah->ah_noise_floor; |
1943 | rxs->signal = rxs->noise + rs.rs_rssi; | |
6e0e0bf8 | 1944 | |
1c5256bb BC |
1945 | rxs->antenna = rs.rs_antenna; |
1946 | rxs->rate_idx = ath5k_hw_to_driver_rix(sc, rs.rs_rate); | |
1947 | rxs->flag |= ath5k_rx_decrypted(sc, ds, skb, &rs); | |
fa1c114f | 1948 | |
1c5256bb BC |
1949 | if (rxs->rate_idx >= 0 && rs.rs_rate == |
1950 | sc->curband->bitrates[rxs->rate_idx].hw_value_short) | |
1951 | rxs->flag |= RX_FLAG_SHORTPRE; | |
06303352 | 1952 | |
fa1c114f JS |
1953 | ath5k_debug_dump_skb(sc, skb, "RX ", 0); |
1954 | ||
036cd1ec | 1955 | /* check beacons in IBSS mode */ |
05c914fe | 1956 | if (sc->opmode == NL80211_IFTYPE_ADHOC) |
1c5256bb | 1957 | ath5k_check_ibss_tsf(sc, skb, rxs); |
036cd1ec | 1958 | |
f1d58c25 | 1959 | ieee80211_rx(sc->hw, skb); |
b6ea0356 BC |
1960 | |
1961 | bf->skb = next_skb; | |
1962 | bf->skbaddr = next_skb_addr; | |
fa1c114f JS |
1963 | next: |
1964 | list_move_tail(&bf->list, &sc->rxbuf); | |
1965 | } while (ath5k_rxbuf_setup(sc, bf) == 0); | |
3a0f2c87 | 1966 | unlock: |
fa1c114f JS |
1967 | spin_unlock(&sc->rxbuflock); |
1968 | } | |
1969 | ||
1970 | ||
1971 | ||
1972 | ||
1973 | /*************\ | |
1974 | * TX Handling * | |
1975 | \*************/ | |
1976 | ||
1977 | static void | |
1978 | ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq) | |
1979 | { | |
b47f407b | 1980 | struct ath5k_tx_status ts = {}; |
fa1c114f JS |
1981 | struct ath5k_buf *bf, *bf0; |
1982 | struct ath5k_desc *ds; | |
1983 | struct sk_buff *skb; | |
e039fa4a | 1984 | struct ieee80211_tx_info *info; |
2f7fe870 | 1985 | int i, ret; |
fa1c114f JS |
1986 | |
1987 | spin_lock(&txq->lock); | |
1988 | list_for_each_entry_safe(bf, bf0, &txq->q, list) { | |
1989 | ds = bf->desc; | |
1990 | ||
b47f407b | 1991 | ret = sc->ah->ah_proc_tx_desc(sc->ah, ds, &ts); |
fa1c114f JS |
1992 | if (unlikely(ret == -EINPROGRESS)) |
1993 | break; | |
1994 | else if (unlikely(ret)) { | |
1995 | ATH5K_ERR(sc, "error %d while processing queue %u\n", | |
1996 | ret, txq->qnum); | |
1997 | break; | |
1998 | } | |
1999 | ||
2000 | skb = bf->skb; | |
a888d52d | 2001 | info = IEEE80211_SKB_CB(skb); |
fa1c114f | 2002 | bf->skb = NULL; |
e039fa4a | 2003 | |
fa1c114f JS |
2004 | pci_unmap_single(sc->pdev, bf->skbaddr, skb->len, |
2005 | PCI_DMA_TODEVICE); | |
2006 | ||
e6a9854b | 2007 | ieee80211_tx_info_clear_status(info); |
2f7fe870 | 2008 | for (i = 0; i < 4; i++) { |
e6a9854b JB |
2009 | struct ieee80211_tx_rate *r = |
2010 | &info->status.rates[i]; | |
2f7fe870 FF |
2011 | |
2012 | if (ts.ts_rate[i]) { | |
e6a9854b JB |
2013 | r->idx = ath5k_hw_to_driver_rix(sc, ts.ts_rate[i]); |
2014 | r->count = ts.ts_retry[i]; | |
2f7fe870 | 2015 | } else { |
e6a9854b JB |
2016 | r->idx = -1; |
2017 | r->count = 0; | |
2f7fe870 FF |
2018 | } |
2019 | } | |
2020 | ||
e6a9854b JB |
2021 | /* count the successful attempt as well */ |
2022 | info->status.rates[ts.ts_final_idx].count++; | |
2023 | ||
b47f407b | 2024 | if (unlikely(ts.ts_status)) { |
fa1c114f | 2025 | sc->ll_stats.dot11ACKFailureCount++; |
e6a9854b | 2026 | if (ts.ts_status & AR5K_TXERR_FILT) |
e039fa4a | 2027 | info->flags |= IEEE80211_TX_STAT_TX_FILTERED; |
fa1c114f | 2028 | } else { |
e039fa4a JB |
2029 | info->flags |= IEEE80211_TX_STAT_ACK; |
2030 | info->status.ack_signal = ts.ts_rssi; | |
fa1c114f JS |
2031 | } |
2032 | ||
e039fa4a | 2033 | ieee80211_tx_status(sc->hw, skb); |
fa1c114f JS |
2034 | |
2035 | spin_lock(&sc->txbuflock); | |
fa1c114f JS |
2036 | list_move_tail(&bf->list, &sc->txbuf); |
2037 | sc->txbuf_len++; | |
2038 | spin_unlock(&sc->txbuflock); | |
2039 | } | |
2040 | if (likely(list_empty(&txq->q))) | |
2041 | txq->link = NULL; | |
2042 | spin_unlock(&txq->lock); | |
2043 | if (sc->txbuf_len > ATH_TXBUF / 5) | |
2044 | ieee80211_wake_queues(sc->hw); | |
2045 | } | |
2046 | ||
2047 | static void | |
2048 | ath5k_tasklet_tx(unsigned long data) | |
2049 | { | |
8784d2ee | 2050 | int i; |
fa1c114f JS |
2051 | struct ath5k_softc *sc = (void *)data; |
2052 | ||
8784d2ee BC |
2053 | for (i=0; i < AR5K_NUM_TX_QUEUES; i++) |
2054 | if (sc->txqs[i].setup && (sc->ah->ah_txq_isr & BIT(i))) | |
2055 | ath5k_tx_processq(sc, &sc->txqs[i]); | |
fa1c114f JS |
2056 | } |
2057 | ||
2058 | ||
fa1c114f JS |
2059 | /*****************\ |
2060 | * Beacon handling * | |
2061 | \*****************/ | |
2062 | ||
2063 | /* | |
2064 | * Setup the beacon frame for transmit. | |
2065 | */ | |
2066 | static int | |
e039fa4a | 2067 | ath5k_beacon_setup(struct ath5k_softc *sc, struct ath5k_buf *bf) |
fa1c114f JS |
2068 | { |
2069 | struct sk_buff *skb = bf->skb; | |
a888d52d | 2070 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
fa1c114f JS |
2071 | struct ath5k_hw *ah = sc->ah; |
2072 | struct ath5k_desc *ds; | |
2bed03eb NK |
2073 | int ret = 0; |
2074 | u8 antenna; | |
fa1c114f JS |
2075 | u32 flags; |
2076 | ||
2077 | bf->skbaddr = pci_map_single(sc->pdev, skb->data, skb->len, | |
2078 | PCI_DMA_TODEVICE); | |
2079 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, "skb %p [data %p len %u] " | |
2080 | "skbaddr %llx\n", skb, skb->data, skb->len, | |
2081 | (unsigned long long)bf->skbaddr); | |
8d8bb39b | 2082 | if (pci_dma_mapping_error(sc->pdev, bf->skbaddr)) { |
fa1c114f JS |
2083 | ATH5K_ERR(sc, "beacon DMA mapping failed\n"); |
2084 | return -EIO; | |
2085 | } | |
2086 | ||
2087 | ds = bf->desc; | |
2bed03eb | 2088 | antenna = ah->ah_tx_ant; |
fa1c114f JS |
2089 | |
2090 | flags = AR5K_TXDESC_NOACK; | |
05c914fe | 2091 | if (sc->opmode == NL80211_IFTYPE_ADHOC && ath5k_hw_hasveol(ah)) { |
fa1c114f JS |
2092 | ds->ds_link = bf->daddr; /* self-linked */ |
2093 | flags |= AR5K_TXDESC_VEOL; | |
2bed03eb | 2094 | } else |
fa1c114f | 2095 | ds->ds_link = 0; |
2bed03eb NK |
2096 | |
2097 | /* | |
2098 | * If we use multiple antennas on AP and use | |
2099 | * the Sectored AP scenario, switch antenna every | |
2100 | * 4 beacons to make sure everybody hears our AP. | |
2101 | * When a client tries to associate, hw will keep | |
2102 | * track of the tx antenna to be used for this client | |
2103 | * automaticaly, based on ACKed packets. | |
2104 | * | |
2105 | * Note: AP still listens and transmits RTS on the | |
2106 | * default antenna which is supposed to be an omni. | |
2107 | * | |
2108 | * Note2: On sectored scenarios it's possible to have | |
2109 | * multiple antennas (1omni -the default- and 14 sectors) | |
2110 | * so if we choose to actually support this mode we need | |
2111 | * to allow user to set how many antennas we have and tweak | |
2112 | * the code below to send beacons on all of them. | |
2113 | */ | |
2114 | if (ah->ah_ant_mode == AR5K_ANTMODE_SECTOR_AP) | |
2115 | antenna = sc->bsent & 4 ? 2 : 1; | |
2116 | ||
fa1c114f | 2117 | |
8f655dde NK |
2118 | /* FIXME: If we are in g mode and rate is a CCK rate |
2119 | * subtract ah->ah_txpower.txp_cck_ofdm_pwr_delta | |
2120 | * from tx power (value is in dB units already) */ | |
fa1c114f | 2121 | ds->ds_data = bf->skbaddr; |
281c56dd | 2122 | ret = ah->ah_setup_tx_desc(ah, ds, skb->len, |
fa1c114f | 2123 | ieee80211_get_hdrlen_from_skb(skb), |
400ec45a | 2124 | AR5K_PKT_TYPE_BEACON, (sc->power_level * 2), |
e039fa4a | 2125 | ieee80211_get_tx_rate(sc->hw, info)->hw_value, |
2e92e6f2 | 2126 | 1, AR5K_TXKEYIX_INVALID, |
400ec45a | 2127 | antenna, flags, 0, 0); |
fa1c114f JS |
2128 | if (ret) |
2129 | goto err_unmap; | |
2130 | ||
2131 | return 0; | |
2132 | err_unmap: | |
2133 | pci_unmap_single(sc->pdev, bf->skbaddr, skb->len, PCI_DMA_TODEVICE); | |
2134 | return ret; | |
2135 | } | |
2136 | ||
2137 | /* | |
2138 | * Transmit a beacon frame at SWBA. Dynamic updates to the | |
2139 | * frame contents are done as needed and the slot time is | |
2140 | * also adjusted based on current state. | |
2141 | * | |
acf3c1a5 BC |
2142 | * This is called from software irq context (beacontq or restq |
2143 | * tasklets) or user context from ath5k_beacon_config. | |
fa1c114f JS |
2144 | */ |
2145 | static void | |
2146 | ath5k_beacon_send(struct ath5k_softc *sc) | |
2147 | { | |
2148 | struct ath5k_buf *bf = sc->bbuf; | |
2149 | struct ath5k_hw *ah = sc->ah; | |
cec8db23 | 2150 | struct sk_buff *skb; |
fa1c114f | 2151 | |
be9b7259 | 2152 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, "in beacon_send\n"); |
fa1c114f | 2153 | |
05c914fe JB |
2154 | if (unlikely(bf->skb == NULL || sc->opmode == NL80211_IFTYPE_STATION || |
2155 | sc->opmode == NL80211_IFTYPE_MONITOR)) { | |
fa1c114f JS |
2156 | ATH5K_WARN(sc, "bf=%p bf_skb=%p\n", bf, bf ? bf->skb : NULL); |
2157 | return; | |
2158 | } | |
2159 | /* | |
2160 | * Check if the previous beacon has gone out. If | |
2161 | * not don't don't try to post another, skip this | |
2162 | * period and wait for the next. Missed beacons | |
2163 | * indicate a problem and should not occur. If we | |
2164 | * miss too many consecutive beacons reset the device. | |
2165 | */ | |
2166 | if (unlikely(ath5k_hw_num_tx_pending(ah, sc->bhalq) != 0)) { | |
2167 | sc->bmisscount++; | |
be9b7259 | 2168 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
fa1c114f | 2169 | "missed %u consecutive beacons\n", sc->bmisscount); |
428cbd4f | 2170 | if (sc->bmisscount > 10) { /* NB: 10 is a guess */ |
be9b7259 | 2171 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
fa1c114f JS |
2172 | "stuck beacon time (%u missed)\n", |
2173 | sc->bmisscount); | |
2174 | tasklet_schedule(&sc->restq); | |
2175 | } | |
2176 | return; | |
2177 | } | |
2178 | if (unlikely(sc->bmisscount != 0)) { | |
be9b7259 | 2179 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, |
fa1c114f JS |
2180 | "resume beacon xmit after %u misses\n", |
2181 | sc->bmisscount); | |
2182 | sc->bmisscount = 0; | |
2183 | } | |
2184 | ||
2185 | /* | |
2186 | * Stop any current dma and put the new frame on the queue. | |
2187 | * This should never fail since we check above that no frames | |
2188 | * are still pending on the queue. | |
2189 | */ | |
2190 | if (unlikely(ath5k_hw_stop_tx_dma(ah, sc->bhalq))) { | |
428cbd4f | 2191 | ATH5K_WARN(sc, "beacon queue %u didn't start/stop ?\n", sc->bhalq); |
fa1c114f JS |
2192 | /* NB: hw still stops DMA, so proceed */ |
2193 | } | |
fa1c114f | 2194 | |
1071db86 BC |
2195 | /* refresh the beacon for AP mode */ |
2196 | if (sc->opmode == NL80211_IFTYPE_AP) | |
2197 | ath5k_beacon_update(sc->hw, sc->vif); | |
2198 | ||
c6e387a2 NK |
2199 | ath5k_hw_set_txdp(ah, sc->bhalq, bf->daddr); |
2200 | ath5k_hw_start_tx_dma(ah, sc->bhalq); | |
be9b7259 | 2201 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, "TXDP[%u] = %llx (%p)\n", |
fa1c114f JS |
2202 | sc->bhalq, (unsigned long long)bf->daddr, bf->desc); |
2203 | ||
cec8db23 BC |
2204 | skb = ieee80211_get_buffered_bc(sc->hw, sc->vif); |
2205 | while (skb) { | |
2206 | ath5k_tx_queue(sc->hw, skb, sc->cabq); | |
2207 | skb = ieee80211_get_buffered_bc(sc->hw, sc->vif); | |
2208 | } | |
2209 | ||
fa1c114f JS |
2210 | sc->bsent++; |
2211 | } | |
2212 | ||
2213 | ||
9804b98d BR |
2214 | /** |
2215 | * ath5k_beacon_update_timers - update beacon timers | |
2216 | * | |
2217 | * @sc: struct ath5k_softc pointer we are operating on | |
2218 | * @bc_tsf: the timestamp of the beacon. 0 to reset the TSF. -1 to perform a | |
2219 | * beacon timer update based on the current HW TSF. | |
2220 | * | |
2221 | * Calculate the next target beacon transmit time (TBTT) based on the timestamp | |
2222 | * of a received beacon or the current local hardware TSF and write it to the | |
2223 | * beacon timer registers. | |
2224 | * | |
2225 | * This is called in a variety of situations, e.g. when a beacon is received, | |
6ba81c2c | 2226 | * when a TSF update has been detected, but also when an new IBSS is created or |
9804b98d BR |
2227 | * when we otherwise know we have to update the timers, but we keep it in this |
2228 | * function to have it all together in one place. | |
2229 | */ | |
fa1c114f | 2230 | static void |
9804b98d | 2231 | ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf) |
fa1c114f JS |
2232 | { |
2233 | struct ath5k_hw *ah = sc->ah; | |
9804b98d BR |
2234 | u32 nexttbtt, intval, hw_tu, bc_tu; |
2235 | u64 hw_tsf; | |
fa1c114f JS |
2236 | |
2237 | intval = sc->bintval & AR5K_BEACON_PERIOD; | |
2238 | if (WARN_ON(!intval)) | |
2239 | return; | |
2240 | ||
9804b98d BR |
2241 | /* beacon TSF converted to TU */ |
2242 | bc_tu = TSF_TO_TU(bc_tsf); | |
fa1c114f | 2243 | |
9804b98d BR |
2244 | /* current TSF converted to TU */ |
2245 | hw_tsf = ath5k_hw_get_tsf64(ah); | |
2246 | hw_tu = TSF_TO_TU(hw_tsf); | |
fa1c114f | 2247 | |
9804b98d BR |
2248 | #define FUDGE 3 |
2249 | /* we use FUDGE to make sure the next TBTT is ahead of the current TU */ | |
2250 | if (bc_tsf == -1) { | |
2251 | /* | |
2252 | * no beacons received, called internally. | |
2253 | * just need to refresh timers based on HW TSF. | |
2254 | */ | |
2255 | nexttbtt = roundup(hw_tu + FUDGE, intval); | |
2256 | } else if (bc_tsf == 0) { | |
2257 | /* | |
2258 | * no beacon received, probably called by ath5k_reset_tsf(). | |
2259 | * reset TSF to start with 0. | |
2260 | */ | |
2261 | nexttbtt = intval; | |
2262 | intval |= AR5K_BEACON_RESET_TSF; | |
2263 | } else if (bc_tsf > hw_tsf) { | |
2264 | /* | |
2265 | * beacon received, SW merge happend but HW TSF not yet updated. | |
2266 | * not possible to reconfigure timers yet, but next time we | |
2267 | * receive a beacon with the same BSSID, the hardware will | |
2268 | * automatically update the TSF and then we need to reconfigure | |
2269 | * the timers. | |
2270 | */ | |
2271 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, | |
2272 | "need to wait for HW TSF sync\n"); | |
2273 | return; | |
2274 | } else { | |
2275 | /* | |
2276 | * most important case for beacon synchronization between STA. | |
2277 | * | |
2278 | * beacon received and HW TSF has been already updated by HW. | |
2279 | * update next TBTT based on the TSF of the beacon, but make | |
2280 | * sure it is ahead of our local TSF timer. | |
2281 | */ | |
2282 | nexttbtt = bc_tu + roundup(hw_tu + FUDGE - bc_tu, intval); | |
2283 | } | |
2284 | #undef FUDGE | |
fa1c114f | 2285 | |
036cd1ec BR |
2286 | sc->nexttbtt = nexttbtt; |
2287 | ||
fa1c114f | 2288 | intval |= AR5K_BEACON_ENA; |
fa1c114f | 2289 | ath5k_hw_init_beacon(ah, nexttbtt, intval); |
9804b98d BR |
2290 | |
2291 | /* | |
2292 | * debugging output last in order to preserve the time critical aspect | |
2293 | * of this function | |
2294 | */ | |
2295 | if (bc_tsf == -1) | |
2296 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, | |
2297 | "reconfigured timers based on HW TSF\n"); | |
2298 | else if (bc_tsf == 0) | |
2299 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, | |
2300 | "reset HW TSF and timers\n"); | |
2301 | else | |
2302 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, | |
2303 | "updated timers based on beacon TSF\n"); | |
2304 | ||
2305 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, | |
04f93a87 DM |
2306 | "bc_tsf %llx hw_tsf %llx bc_tu %u hw_tu %u nexttbtt %u\n", |
2307 | (unsigned long long) bc_tsf, | |
2308 | (unsigned long long) hw_tsf, bc_tu, hw_tu, nexttbtt); | |
9804b98d BR |
2309 | ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, "intval %u %s %s\n", |
2310 | intval & AR5K_BEACON_PERIOD, | |
2311 | intval & AR5K_BEACON_ENA ? "AR5K_BEACON_ENA" : "", | |
2312 | intval & AR5K_BEACON_RESET_TSF ? "AR5K_BEACON_RESET_TSF" : ""); | |
fa1c114f JS |
2313 | } |
2314 | ||
2315 | ||
036cd1ec BR |
2316 | /** |
2317 | * ath5k_beacon_config - Configure the beacon queues and interrupts | |
2318 | * | |
2319 | * @sc: struct ath5k_softc pointer we are operating on | |
fa1c114f | 2320 | * |
036cd1ec | 2321 | * In IBSS mode we use a self-linked tx descriptor if possible. We enable SWBA |
6ba81c2c | 2322 | * interrupts to detect TSF updates only. |
fa1c114f JS |
2323 | */ |
2324 | static void | |
2325 | ath5k_beacon_config(struct ath5k_softc *sc) | |
2326 | { | |
2327 | struct ath5k_hw *ah = sc->ah; | |
b5f03956 | 2328 | unsigned long flags; |
fa1c114f | 2329 | |
21800491 | 2330 | spin_lock_irqsave(&sc->block, flags); |
fa1c114f | 2331 | sc->bmisscount = 0; |
dc1968e7 | 2332 | sc->imask &= ~(AR5K_INT_BMISS | AR5K_INT_SWBA); |
fa1c114f | 2333 | |
21800491 | 2334 | if (sc->enable_beacon) { |
fa1c114f | 2335 | /* |
036cd1ec BR |
2336 | * In IBSS mode we use a self-linked tx descriptor and let the |
2337 | * hardware send the beacons automatically. We have to load it | |
fa1c114f | 2338 | * only once here. |
036cd1ec | 2339 | * We use the SWBA interrupt only to keep track of the beacon |
6ba81c2c | 2340 | * timers in order to detect automatic TSF updates. |
fa1c114f JS |
2341 | */ |
2342 | ath5k_beaconq_config(sc); | |
fa1c114f | 2343 | |
036cd1ec BR |
2344 | sc->imask |= AR5K_INT_SWBA; |
2345 | ||
da966bca | 2346 | if (sc->opmode == NL80211_IFTYPE_ADHOC) { |
21800491 | 2347 | if (ath5k_hw_hasveol(ah)) |
da966bca | 2348 | ath5k_beacon_send(sc); |
da966bca JS |
2349 | } else |
2350 | ath5k_beacon_update_timers(sc, -1); | |
21800491 BC |
2351 | } else { |
2352 | ath5k_hw_stop_tx_dma(sc->ah, sc->bhalq); | |
fa1c114f | 2353 | } |
fa1c114f | 2354 | |
c6e387a2 | 2355 | ath5k_hw_set_imr(ah, sc->imask); |
21800491 BC |
2356 | mmiowb(); |
2357 | spin_unlock_irqrestore(&sc->block, flags); | |
fa1c114f JS |
2358 | } |
2359 | ||
428cbd4f NK |
2360 | static void ath5k_tasklet_beacon(unsigned long data) |
2361 | { | |
2362 | struct ath5k_softc *sc = (struct ath5k_softc *) data; | |
2363 | ||
2364 | /* | |
2365 | * Software beacon alert--time to send a beacon. | |
2366 | * | |
2367 | * In IBSS mode we use this interrupt just to | |
2368 | * keep track of the next TBTT (target beacon | |
2369 | * transmission time) in order to detect wether | |
2370 | * automatic TSF updates happened. | |
2371 | */ | |
2372 | if (sc->opmode == NL80211_IFTYPE_ADHOC) { | |
2373 | /* XXX: only if VEOL suppported */ | |
2374 | u64 tsf = ath5k_hw_get_tsf64(sc->ah); | |
2375 | sc->nexttbtt += sc->bintval; | |
2376 | ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, | |
2377 | "SWBA nexttbtt: %x hw_tu: %x " | |
2378 | "TSF: %llx\n", | |
2379 | sc->nexttbtt, | |
2380 | TSF_TO_TU(tsf), | |
2381 | (unsigned long long) tsf); | |
2382 | } else { | |
2383 | spin_lock(&sc->block); | |
2384 | ath5k_beacon_send(sc); | |
2385 | spin_unlock(&sc->block); | |
2386 | } | |
2387 | } | |
2388 | ||
fa1c114f JS |
2389 | |
2390 | /********************\ | |
2391 | * Interrupt handling * | |
2392 | \********************/ | |
2393 | ||
2394 | static int | |
bb2becac | 2395 | ath5k_init(struct ath5k_softc *sc) |
fa1c114f | 2396 | { |
bc1b32d6 EO |
2397 | struct ath5k_hw *ah = sc->ah; |
2398 | int ret, i; | |
fa1c114f JS |
2399 | |
2400 | mutex_lock(&sc->lock); | |
2401 | ||
2402 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "mode %d\n", sc->opmode); | |
2403 | ||
2404 | /* | |
2405 | * Stop anything previously setup. This is safe | |
2406 | * no matter this is the first time through or not. | |
2407 | */ | |
2408 | ath5k_stop_locked(sc); | |
2409 | ||
242ab7ad BC |
2410 | /* Set PHY calibration interval */ |
2411 | ah->ah_cal_intval = ath5k_calinterval; | |
2412 | ||
fa1c114f JS |
2413 | /* |
2414 | * The basic interface to setting the hardware in a good | |
2415 | * state is ``reset''. On return the hardware is known to | |
2416 | * be powered up and with interrupts disabled. This must | |
2417 | * be followed by initialization of the appropriate bits | |
2418 | * and then setup of the interrupt mask. | |
2419 | */ | |
d8ee398d LR |
2420 | sc->curchan = sc->hw->conf.channel; |
2421 | sc->curband = &sc->sbands[sc->curchan->band]; | |
6a53a8a9 NK |
2422 | sc->imask = AR5K_INT_RXOK | AR5K_INT_RXERR | AR5K_INT_RXEOL | |
2423 | AR5K_INT_RXORN | AR5K_INT_TXDESC | AR5K_INT_TXEOL | | |
6e220662 | 2424 | AR5K_INT_FATAL | AR5K_INT_GLOBAL | AR5K_INT_SWI; |
209d889b | 2425 | ret = ath5k_reset(sc, NULL); |
d7dc1003 JS |
2426 | if (ret) |
2427 | goto done; | |
fa1c114f | 2428 | |
e6a3b616 TD |
2429 | ath5k_rfkill_hw_start(ah); |
2430 | ||
bc1b32d6 EO |
2431 | /* |
2432 | * Reset the key cache since some parts do not reset the | |
2433 | * contents on initial power up or resume from suspend. | |
2434 | */ | |
2435 | for (i = 0; i < AR5K_KEYTABLE_SIZE; i++) | |
2436 | ath5k_hw_reset_key(ah, i); | |
2437 | ||
fa1c114f | 2438 | /* Set ack to be sent at low bit-rates */ |
bc1b32d6 | 2439 | ath5k_hw_set_ack_bitrate_high(ah, false); |
fa1c114f JS |
2440 | ret = 0; |
2441 | done: | |
274c7c36 | 2442 | mmiowb(); |
fa1c114f JS |
2443 | mutex_unlock(&sc->lock); |
2444 | return ret; | |
2445 | } | |
2446 | ||
2447 | static int | |
2448 | ath5k_stop_locked(struct ath5k_softc *sc) | |
2449 | { | |
2450 | struct ath5k_hw *ah = sc->ah; | |
2451 | ||
2452 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "invalid %u\n", | |
2453 | test_bit(ATH_STAT_INVALID, sc->status)); | |
2454 | ||
2455 | /* | |
2456 | * Shutdown the hardware and driver: | |
2457 | * stop output from above | |
2458 | * disable interrupts | |
2459 | * turn off timers | |
2460 | * turn off the radio | |
2461 | * clear transmit machinery | |
2462 | * clear receive machinery | |
2463 | * drain and release tx queues | |
2464 | * reclaim beacon resources | |
2465 | * power down hardware | |
2466 | * | |
2467 | * Note that some of this work is not possible if the | |
2468 | * hardware is gone (invalid). | |
2469 | */ | |
2470 | ieee80211_stop_queues(sc->hw); | |
2471 | ||
2472 | if (!test_bit(ATH_STAT_INVALID, sc->status)) { | |
3a078876 | 2473 | ath5k_led_off(sc); |
c6e387a2 | 2474 | ath5k_hw_set_imr(ah, 0); |
274c7c36 | 2475 | synchronize_irq(sc->pdev->irq); |
fa1c114f JS |
2476 | } |
2477 | ath5k_txq_cleanup(sc); | |
2478 | if (!test_bit(ATH_STAT_INVALID, sc->status)) { | |
2479 | ath5k_rx_stop(sc); | |
2480 | ath5k_hw_phy_disable(ah); | |
2481 | } else | |
2482 | sc->rxlink = NULL; | |
2483 | ||
2484 | return 0; | |
2485 | } | |
2486 | ||
2487 | /* | |
2488 | * Stop the device, grabbing the top-level lock to protect | |
2489 | * against concurrent entry through ath5k_init (which can happen | |
2490 | * if another thread does a system call and the thread doing the | |
2491 | * stop is preempted). | |
2492 | */ | |
2493 | static int | |
bb2becac | 2494 | ath5k_stop_hw(struct ath5k_softc *sc) |
fa1c114f JS |
2495 | { |
2496 | int ret; | |
2497 | ||
2498 | mutex_lock(&sc->lock); | |
2499 | ret = ath5k_stop_locked(sc); | |
2500 | if (ret == 0 && !test_bit(ATH_STAT_INVALID, sc->status)) { | |
2501 | /* | |
edd7fc70 NK |
2502 | * Don't set the card in full sleep mode! |
2503 | * | |
2504 | * a) When the device is in this state it must be carefully | |
2505 | * woken up or references to registers in the PCI clock | |
2506 | * domain may freeze the bus (and system). This varies | |
2507 | * by chip and is mostly an issue with newer parts | |
2508 | * (madwifi sources mentioned srev >= 0x78) that go to | |
2509 | * sleep more quickly. | |
2510 | * | |
2511 | * b) On older chips full sleep results a weird behaviour | |
2512 | * during wakeup. I tested various cards with srev < 0x78 | |
2513 | * and they don't wake up after module reload, a second | |
2514 | * module reload is needed to bring the card up again. | |
2515 | * | |
2516 | * Until we figure out what's going on don't enable | |
2517 | * full chip reset on any chip (this is what Legacy HAL | |
2518 | * and Sam's HAL do anyway). Instead Perform a full reset | |
2519 | * on the device (same as initial state after attach) and | |
2520 | * leave it idle (keep MAC/BB on warm reset) */ | |
2521 | ret = ath5k_hw_on_hold(sc->ah); | |
2522 | ||
2523 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, | |
2524 | "putting device to sleep\n"); | |
fa1c114f JS |
2525 | } |
2526 | ath5k_txbuf_free(sc, sc->bbuf); | |
8bdd5b9c | 2527 | |
274c7c36 | 2528 | mmiowb(); |
fa1c114f JS |
2529 | mutex_unlock(&sc->lock); |
2530 | ||
10488f8a JS |
2531 | tasklet_kill(&sc->rxtq); |
2532 | tasklet_kill(&sc->txtq); | |
2533 | tasklet_kill(&sc->restq); | |
6e220662 | 2534 | tasklet_kill(&sc->calib); |
acf3c1a5 | 2535 | tasklet_kill(&sc->beacontq); |
fa1c114f | 2536 | |
e6a3b616 TD |
2537 | ath5k_rfkill_hw_stop(sc->ah); |
2538 | ||
fa1c114f JS |
2539 | return ret; |
2540 | } | |
2541 | ||
2542 | static irqreturn_t | |
2543 | ath5k_intr(int irq, void *dev_id) | |
2544 | { | |
2545 | struct ath5k_softc *sc = dev_id; | |
2546 | struct ath5k_hw *ah = sc->ah; | |
2547 | enum ath5k_int status; | |
2548 | unsigned int counter = 1000; | |
2549 | ||
2550 | if (unlikely(test_bit(ATH_STAT_INVALID, sc->status) || | |
2551 | !ath5k_hw_is_intr_pending(ah))) | |
2552 | return IRQ_NONE; | |
2553 | ||
2554 | do { | |
fa1c114f JS |
2555 | ath5k_hw_get_isr(ah, &status); /* NB: clears IRQ too */ |
2556 | ATH5K_DBG(sc, ATH5K_DEBUG_INTR, "status 0x%x/0x%x\n", | |
2557 | status, sc->imask); | |
fa1c114f JS |
2558 | if (unlikely(status & AR5K_INT_FATAL)) { |
2559 | /* | |
2560 | * Fatal errors are unrecoverable. | |
2561 | * Typically these are caused by DMA errors. | |
2562 | */ | |
2563 | tasklet_schedule(&sc->restq); | |
2564 | } else if (unlikely(status & AR5K_INT_RXORN)) { | |
2565 | tasklet_schedule(&sc->restq); | |
2566 | } else { | |
2567 | if (status & AR5K_INT_SWBA) { | |
56d2ac76 | 2568 | tasklet_hi_schedule(&sc->beacontq); |
fa1c114f JS |
2569 | } |
2570 | if (status & AR5K_INT_RXEOL) { | |
2571 | /* | |
2572 | * NB: the hardware should re-read the link when | |
2573 | * RXE bit is written, but it doesn't work at | |
2574 | * least on older hardware revs. | |
2575 | */ | |
2576 | sc->rxlink = NULL; | |
2577 | } | |
2578 | if (status & AR5K_INT_TXURN) { | |
2579 | /* bump tx trigger level */ | |
2580 | ath5k_hw_update_tx_triglevel(ah, true); | |
2581 | } | |
4c674c60 | 2582 | if (status & (AR5K_INT_RXOK | AR5K_INT_RXERR)) |
fa1c114f | 2583 | tasklet_schedule(&sc->rxtq); |
4c674c60 NK |
2584 | if (status & (AR5K_INT_TXOK | AR5K_INT_TXDESC |
2585 | | AR5K_INT_TXERR | AR5K_INT_TXEOL)) | |
fa1c114f JS |
2586 | tasklet_schedule(&sc->txtq); |
2587 | if (status & AR5K_INT_BMISS) { | |
1e3e6e8f | 2588 | /* TODO */ |
fa1c114f | 2589 | } |
6e220662 NK |
2590 | if (status & AR5K_INT_SWI) { |
2591 | tasklet_schedule(&sc->calib); | |
2592 | } | |
fa1c114f | 2593 | if (status & AR5K_INT_MIB) { |
194828a2 NK |
2594 | /* |
2595 | * These stats are also used for ANI i think | |
2596 | * so how about updating them more often ? | |
2597 | */ | |
2598 | ath5k_hw_update_mib_counters(ah, &sc->ll_stats); | |
fa1c114f | 2599 | } |
e6a3b616 | 2600 | if (status & AR5K_INT_GPIO) |
e6a3b616 | 2601 | tasklet_schedule(&sc->rf_kill.toggleq); |
a6ae0716 | 2602 | |
fa1c114f | 2603 | } |
2516baa6 | 2604 | } while (ath5k_hw_is_intr_pending(ah) && --counter > 0); |
fa1c114f JS |
2605 | |
2606 | if (unlikely(!counter)) | |
2607 | ATH5K_WARN(sc, "too many interrupts, giving up for now\n"); | |
2608 | ||
6e220662 NK |
2609 | ath5k_hw_calibration_poll(ah); |
2610 | ||
fa1c114f JS |
2611 | return IRQ_HANDLED; |
2612 | } | |
2613 | ||
2614 | static void | |
2615 | ath5k_tasklet_reset(unsigned long data) | |
2616 | { | |
2617 | struct ath5k_softc *sc = (void *)data; | |
2618 | ||
d7dc1003 | 2619 | ath5k_reset_wake(sc); |
fa1c114f JS |
2620 | } |
2621 | ||
2622 | /* | |
2623 | * Periodically recalibrate the PHY to account | |
2624 | * for temperature/environment changes. | |
2625 | */ | |
2626 | static void | |
6e220662 | 2627 | ath5k_tasklet_calibrate(unsigned long data) |
fa1c114f JS |
2628 | { |
2629 | struct ath5k_softc *sc = (void *)data; | |
2630 | struct ath5k_hw *ah = sc->ah; | |
2631 | ||
6e220662 NK |
2632 | /* Only full calibration for now */ |
2633 | if (ah->ah_swi_mask != AR5K_SWI_FULL_CALIBRATION) | |
2634 | return; | |
2635 | ||
2636 | /* Stop queues so that calibration | |
2637 | * doesn't interfere with tx */ | |
2638 | ieee80211_stop_queues(sc->hw); | |
2639 | ||
fa1c114f | 2640 | ATH5K_DBG(sc, ATH5K_DEBUG_CALIBRATE, "channel %u/%x\n", |
400ec45a LR |
2641 | ieee80211_frequency_to_channel(sc->curchan->center_freq), |
2642 | sc->curchan->hw_value); | |
fa1c114f | 2643 | |
6f3b414a | 2644 | if (ath5k_hw_gainf_calibrate(ah) == AR5K_RFGAIN_NEED_CHANGE) { |
fa1c114f JS |
2645 | /* |
2646 | * Rfgain is out of bounds, reset the chip | |
2647 | * to load new gain values. | |
2648 | */ | |
2649 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "calibration, resetting\n"); | |
d7dc1003 | 2650 | ath5k_reset_wake(sc); |
fa1c114f JS |
2651 | } |
2652 | if (ath5k_hw_phy_calibrate(ah, sc->curchan)) | |
2653 | ATH5K_ERR(sc, "calibration of channel %u failed\n", | |
400ec45a LR |
2654 | ieee80211_frequency_to_channel( |
2655 | sc->curchan->center_freq)); | |
fa1c114f | 2656 | |
6e220662 NK |
2657 | ah->ah_swi_mask = 0; |
2658 | ||
2659 | /* Wake queues */ | |
2660 | ieee80211_wake_queues(sc->hw); | |
2661 | ||
fa1c114f JS |
2662 | } |
2663 | ||
2664 | ||
fa1c114f JS |
2665 | /********************\ |
2666 | * Mac80211 functions * | |
2667 | \********************/ | |
2668 | ||
2669 | static int | |
e039fa4a | 2670 | ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
cec8db23 BC |
2671 | { |
2672 | struct ath5k_softc *sc = hw->priv; | |
2673 | ||
2674 | return ath5k_tx_queue(hw, skb, sc->txq); | |
2675 | } | |
2676 | ||
2677 | static int ath5k_tx_queue(struct ieee80211_hw *hw, struct sk_buff *skb, | |
2678 | struct ath5k_txq *txq) | |
fa1c114f JS |
2679 | { |
2680 | struct ath5k_softc *sc = hw->priv; | |
2681 | struct ath5k_buf *bf; | |
2682 | unsigned long flags; | |
2683 | int hdrlen; | |
0fe45b1d | 2684 | int padsize; |
fa1c114f JS |
2685 | |
2686 | ath5k_debug_dump_skb(sc, skb, "TX ", 1); | |
2687 | ||
05c914fe | 2688 | if (sc->opmode == NL80211_IFTYPE_MONITOR) |
fa1c114f JS |
2689 | ATH5K_DBG(sc, ATH5K_DEBUG_XMIT, "tx in monitor (scan?)\n"); |
2690 | ||
2691 | /* | |
2692 | * the hardware expects the header padded to 4 byte boundaries | |
2693 | * if this is not the case we add the padding after the header | |
2694 | */ | |
2695 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
fd6effca BC |
2696 | padsize = ath5k_pad_size(hdrlen); |
2697 | if (padsize) { | |
0fe45b1d BP |
2698 | |
2699 | if (skb_headroom(skb) < padsize) { | |
fa1c114f | 2700 | ATH5K_ERR(sc, "tx hdrlen not %%4: %d not enough" |
0fe45b1d | 2701 | " headroom to pad %d\n", hdrlen, padsize); |
5a0fe8ac | 2702 | goto drop_packet; |
fa1c114f | 2703 | } |
0fe45b1d BP |
2704 | skb_push(skb, padsize); |
2705 | memmove(skb->data, skb->data+padsize, hdrlen); | |
fa1c114f JS |
2706 | } |
2707 | ||
fa1c114f JS |
2708 | spin_lock_irqsave(&sc->txbuflock, flags); |
2709 | if (list_empty(&sc->txbuf)) { | |
2710 | ATH5K_ERR(sc, "no further txbuf available, dropping packet\n"); | |
2711 | spin_unlock_irqrestore(&sc->txbuflock, flags); | |
e2530083 | 2712 | ieee80211_stop_queue(hw, skb_get_queue_mapping(skb)); |
5a0fe8ac | 2713 | goto drop_packet; |
fa1c114f JS |
2714 | } |
2715 | bf = list_first_entry(&sc->txbuf, struct ath5k_buf, list); | |
2716 | list_del(&bf->list); | |
2717 | sc->txbuf_len--; | |
2718 | if (list_empty(&sc->txbuf)) | |
2719 | ieee80211_stop_queues(hw); | |
2720 | spin_unlock_irqrestore(&sc->txbuflock, flags); | |
2721 | ||
2722 | bf->skb = skb; | |
2723 | ||
cec8db23 | 2724 | if (ath5k_txbuf_setup(sc, bf, txq)) { |
fa1c114f JS |
2725 | bf->skb = NULL; |
2726 | spin_lock_irqsave(&sc->txbuflock, flags); | |
2727 | list_add_tail(&bf->list, &sc->txbuf); | |
2728 | sc->txbuf_len++; | |
2729 | spin_unlock_irqrestore(&sc->txbuflock, flags); | |
5a0fe8ac | 2730 | goto drop_packet; |
fa1c114f | 2731 | } |
5a0fe8ac | 2732 | return NETDEV_TX_OK; |
fa1c114f | 2733 | |
5a0fe8ac BC |
2734 | drop_packet: |
2735 | dev_kfree_skb_any(skb); | |
71ef99c8 | 2736 | return NETDEV_TX_OK; |
fa1c114f JS |
2737 | } |
2738 | ||
209d889b BC |
2739 | /* |
2740 | * Reset the hardware. If chan is not NULL, then also pause rx/tx | |
2741 | * and change to the given channel. | |
2742 | */ | |
fa1c114f | 2743 | static int |
209d889b | 2744 | ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan) |
fa1c114f | 2745 | { |
fa1c114f JS |
2746 | struct ath5k_hw *ah = sc->ah; |
2747 | int ret; | |
2748 | ||
2749 | ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "resetting\n"); | |
fa1c114f | 2750 | |
209d889b | 2751 | if (chan) { |
c6e387a2 | 2752 | ath5k_hw_set_imr(ah, 0); |
d7dc1003 JS |
2753 | ath5k_txq_cleanup(sc); |
2754 | ath5k_rx_stop(sc); | |
209d889b BC |
2755 | |
2756 | sc->curchan = chan; | |
2757 | sc->curband = &sc->sbands[chan->band]; | |
d7dc1003 | 2758 | } |
3355443a | 2759 | ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, chan != NULL); |
d7dc1003 | 2760 | if (ret) { |
fa1c114f JS |
2761 | ATH5K_ERR(sc, "can't reset hardware (%d)\n", ret); |
2762 | goto err; | |
2763 | } | |
d7dc1003 | 2764 | |
fa1c114f | 2765 | ret = ath5k_rx_start(sc); |
d7dc1003 | 2766 | if (ret) { |
fa1c114f JS |
2767 | ATH5K_ERR(sc, "can't start recv logic\n"); |
2768 | goto err; | |
2769 | } | |
d7dc1003 | 2770 | |
fa1c114f | 2771 | /* |
d7dc1003 JS |
2772 | * Change channels and update the h/w rate map if we're switching; |
2773 | * e.g. 11a to 11b/g. | |
2774 | * | |
2775 | * We may be doing a reset in response to an ioctl that changes the | |
2776 | * channel so update any state that might change as a result. | |
fa1c114f JS |
2777 | * |
2778 | * XXX needed? | |
2779 | */ | |
2780 | /* ath5k_chan_change(sc, c); */ | |
fa1c114f | 2781 | |
d7dc1003 JS |
2782 | ath5k_beacon_config(sc); |
2783 | /* intrs are enabled by ath5k_beacon_config */ | |
fa1c114f JS |
2784 | |
2785 | return 0; | |
2786 | err: | |
2787 | return ret; | |
2788 | } | |
2789 | ||
d7dc1003 JS |
2790 | static int |
2791 | ath5k_reset_wake(struct ath5k_softc *sc) | |
2792 | { | |
2793 | int ret; | |
2794 | ||
209d889b | 2795 | ret = ath5k_reset(sc, sc->curchan); |
d7dc1003 JS |
2796 | if (!ret) |
2797 | ieee80211_wake_queues(sc->hw); | |
2798 | ||
2799 | return ret; | |
2800 | } | |
2801 | ||
fa1c114f JS |
2802 | static int ath5k_start(struct ieee80211_hw *hw) |
2803 | { | |
bb2becac | 2804 | return ath5k_init(hw->priv); |
fa1c114f JS |
2805 | } |
2806 | ||
2807 | static void ath5k_stop(struct ieee80211_hw *hw) | |
2808 | { | |
bb2becac | 2809 | ath5k_stop_hw(hw->priv); |
fa1c114f JS |
2810 | } |
2811 | ||
2812 | static int ath5k_add_interface(struct ieee80211_hw *hw, | |
1ed32e4f | 2813 | struct ieee80211_vif *vif) |
fa1c114f JS |
2814 | { |
2815 | struct ath5k_softc *sc = hw->priv; | |
2816 | int ret; | |
2817 | ||
2818 | mutex_lock(&sc->lock); | |
32bfd35d | 2819 | if (sc->vif) { |
fa1c114f JS |
2820 | ret = 0; |
2821 | goto end; | |
2822 | } | |
2823 | ||
1ed32e4f | 2824 | sc->vif = vif; |
fa1c114f | 2825 | |
1ed32e4f | 2826 | switch (vif->type) { |
da966bca | 2827 | case NL80211_IFTYPE_AP: |
05c914fe JB |
2828 | case NL80211_IFTYPE_STATION: |
2829 | case NL80211_IFTYPE_ADHOC: | |
b706e65b | 2830 | case NL80211_IFTYPE_MESH_POINT: |
05c914fe | 2831 | case NL80211_IFTYPE_MONITOR: |
1ed32e4f | 2832 | sc->opmode = vif->type; |
fa1c114f JS |
2833 | break; |
2834 | default: | |
2835 | ret = -EOPNOTSUPP; | |
2836 | goto end; | |
2837 | } | |
67d2e2df | 2838 | |
1ed32e4f | 2839 | ath5k_hw_set_lladdr(sc->ah, vif->addr); |
ae6f53f2 | 2840 | ath5k_mode_setup(sc); |
67d2e2df | 2841 | |
fa1c114f JS |
2842 | ret = 0; |
2843 | end: | |
2844 | mutex_unlock(&sc->lock); | |
2845 | return ret; | |
2846 | } | |
2847 | ||
2848 | static void | |
2849 | ath5k_remove_interface(struct ieee80211_hw *hw, | |
1ed32e4f | 2850 | struct ieee80211_vif *vif) |
fa1c114f JS |
2851 | { |
2852 | struct ath5k_softc *sc = hw->priv; | |
0e149cf5 | 2853 | u8 mac[ETH_ALEN] = {}; |
fa1c114f JS |
2854 | |
2855 | mutex_lock(&sc->lock); | |
1ed32e4f | 2856 | if (sc->vif != vif) |
fa1c114f JS |
2857 | goto end; |
2858 | ||
0e149cf5 | 2859 | ath5k_hw_set_lladdr(sc->ah, mac); |
32bfd35d | 2860 | sc->vif = NULL; |
fa1c114f JS |
2861 | end: |
2862 | mutex_unlock(&sc->lock); | |
2863 | } | |
2864 | ||
d8ee398d LR |
2865 | /* |
2866 | * TODO: Phy disable/diversity etc | |
2867 | */ | |
fa1c114f | 2868 | static int |
e8975581 | 2869 | ath5k_config(struct ieee80211_hw *hw, u32 changed) |
fa1c114f JS |
2870 | { |
2871 | struct ath5k_softc *sc = hw->priv; | |
a0823810 | 2872 | struct ath5k_hw *ah = sc->ah; |
e8975581 | 2873 | struct ieee80211_conf *conf = &hw->conf; |
2bed03eb | 2874 | int ret = 0; |
be009370 BC |
2875 | |
2876 | mutex_lock(&sc->lock); | |
fa1c114f | 2877 | |
e30eb4ab JA |
2878 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { |
2879 | ret = ath5k_chan_set(sc, conf->channel); | |
2880 | if (ret < 0) | |
2881 | goto unlock; | |
2882 | } | |
2bed03eb | 2883 | |
a0823810 NK |
2884 | if ((changed & IEEE80211_CONF_CHANGE_POWER) && |
2885 | (sc->power_level != conf->power_level)) { | |
2886 | sc->power_level = conf->power_level; | |
2887 | ||
2888 | /* Half dB steps */ | |
2889 | ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2)); | |
2890 | } | |
fa1c114f | 2891 | |
2bed03eb NK |
2892 | /* TODO: |
2893 | * 1) Move this on config_interface and handle each case | |
2894 | * separately eg. when we have only one STA vif, use | |
2895 | * AR5K_ANTMODE_SINGLE_AP | |
2896 | * | |
2897 | * 2) Allow the user to change antenna mode eg. when only | |
2898 | * one antenna is present | |
2899 | * | |
2900 | * 3) Allow the user to set default/tx antenna when possible | |
2901 | * | |
2902 | * 4) Default mode should handle 90% of the cases, together | |
2903 | * with fixed a/b and single AP modes we should be able to | |
2904 | * handle 99%. Sectored modes are extreme cases and i still | |
2905 | * haven't found a usage for them. If we decide to support them, | |
2906 | * then we must allow the user to set how many tx antennas we | |
2907 | * have available | |
2908 | */ | |
2909 | ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT); | |
be009370 | 2910 | |
55aa4e0f | 2911 | unlock: |
be009370 | 2912 | mutex_unlock(&sc->lock); |
55aa4e0f | 2913 | return ret; |
fa1c114f JS |
2914 | } |
2915 | ||
3ac64bee JB |
2916 | static u64 ath5k_prepare_multicast(struct ieee80211_hw *hw, |
2917 | int mc_count, struct dev_addr_list *mclist) | |
2918 | { | |
2919 | u32 mfilt[2], val; | |
2920 | int i; | |
2921 | u8 pos; | |
2922 | ||
2923 | mfilt[0] = 0; | |
2924 | mfilt[1] = 1; | |
2925 | ||
2926 | for (i = 0; i < mc_count; i++) { | |
2927 | if (!mclist) | |
2928 | break; | |
2929 | /* calculate XOR of eight 6-bit values */ | |
2930 | val = get_unaligned_le32(mclist->dmi_addr + 0); | |
2931 | pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; | |
2932 | val = get_unaligned_le32(mclist->dmi_addr + 3); | |
2933 | pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; | |
2934 | pos &= 0x3f; | |
2935 | mfilt[pos / 32] |= (1 << (pos % 32)); | |
2936 | /* XXX: we might be able to just do this instead, | |
2937 | * but not sure, needs testing, if we do use this we'd | |
2938 | * neet to inform below to not reset the mcast */ | |
2939 | /* ath5k_hw_set_mcast_filterindex(ah, | |
2940 | * mclist->dmi_addr[5]); */ | |
2941 | mclist = mclist->next; | |
2942 | } | |
2943 | ||
2944 | return ((u64)(mfilt[1]) << 32) | mfilt[0]; | |
2945 | } | |
2946 | ||
fa1c114f JS |
2947 | #define SUPPORTED_FIF_FLAGS \ |
2948 | FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | \ | |
2949 | FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \ | |
2950 | FIF_BCN_PRBRESP_PROMISC | |
2951 | /* | |
2952 | * o always accept unicast, broadcast, and multicast traffic | |
2953 | * o multicast traffic for all BSSIDs will be enabled if mac80211 | |
2954 | * says it should be | |
2955 | * o maintain current state of phy ofdm or phy cck error reception. | |
2956 | * If the hardware detects any of these type of errors then | |
2957 | * ath5k_hw_get_rx_filter() will pass to us the respective | |
2958 | * hardware filters to be able to receive these type of frames. | |
2959 | * o probe request frames are accepted only when operating in | |
2960 | * hostap, adhoc, or monitor modes | |
2961 | * o enable promiscuous mode according to the interface state | |
2962 | * o accept beacons: | |
2963 | * - when operating in adhoc mode so the 802.11 layer creates | |
2964 | * node table entries for peers, | |
2965 | * - when operating in station mode for collecting rssi data when | |
2966 | * the station is otherwise quiet, or | |
2967 | * - when scanning | |
2968 | */ | |
2969 | static void ath5k_configure_filter(struct ieee80211_hw *hw, | |
2970 | unsigned int changed_flags, | |
2971 | unsigned int *new_flags, | |
3ac64bee | 2972 | u64 multicast) |
fa1c114f JS |
2973 | { |
2974 | struct ath5k_softc *sc = hw->priv; | |
2975 | struct ath5k_hw *ah = sc->ah; | |
3ac64bee | 2976 | u32 mfilt[2], rfilt; |
fa1c114f | 2977 | |
56d1de0a BC |
2978 | mutex_lock(&sc->lock); |
2979 | ||
3ac64bee JB |
2980 | mfilt[0] = multicast; |
2981 | mfilt[1] = multicast >> 32; | |
fa1c114f JS |
2982 | |
2983 | /* Only deal with supported flags */ | |
2984 | changed_flags &= SUPPORTED_FIF_FLAGS; | |
2985 | *new_flags &= SUPPORTED_FIF_FLAGS; | |
2986 | ||
2987 | /* If HW detects any phy or radar errors, leave those filters on. | |
2988 | * Also, always enable Unicast, Broadcasts and Multicast | |
2989 | * XXX: move unicast, bssid broadcasts and multicast to mac80211 */ | |
2990 | rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) | | |
2991 | (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST | | |
2992 | AR5K_RX_FILTER_MCAST); | |
2993 | ||
2994 | if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) { | |
2995 | if (*new_flags & FIF_PROMISC_IN_BSS) { | |
2996 | rfilt |= AR5K_RX_FILTER_PROM; | |
2997 | __set_bit(ATH_STAT_PROMISC, sc->status); | |
0bbac08f | 2998 | } else { |
fa1c114f | 2999 | __clear_bit(ATH_STAT_PROMISC, sc->status); |
0bbac08f | 3000 | } |
fa1c114f JS |
3001 | } |
3002 | ||
3003 | /* Note, AR5K_RX_FILTER_MCAST is already enabled */ | |
3004 | if (*new_flags & FIF_ALLMULTI) { | |
3005 | mfilt[0] = ~0; | |
3006 | mfilt[1] = ~0; | |
fa1c114f JS |
3007 | } |
3008 | ||
3009 | /* This is the best we can do */ | |
3010 | if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL)) | |
3011 | rfilt |= AR5K_RX_FILTER_PHYERR; | |
3012 | ||
3013 | /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons | |
3014 | * and probes for any BSSID, this needs testing */ | |
3015 | if (*new_flags & FIF_BCN_PRBRESP_PROMISC) | |
3016 | rfilt |= AR5K_RX_FILTER_BEACON | AR5K_RX_FILTER_PROBEREQ; | |
3017 | ||
3018 | /* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not | |
3019 | * set we should only pass on control frames for this | |
3020 | * station. This needs testing. I believe right now this | |
3021 | * enables *all* control frames, which is OK.. but | |
3022 | * but we should see if we can improve on granularity */ | |
3023 | if (*new_flags & FIF_CONTROL) | |
3024 | rfilt |= AR5K_RX_FILTER_CONTROL; | |
3025 | ||
3026 | /* Additional settings per mode -- this is per ath5k */ | |
3027 | ||
3028 | /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */ | |
3029 | ||
56d1de0a BC |
3030 | switch (sc->opmode) { |
3031 | case NL80211_IFTYPE_MESH_POINT: | |
3032 | case NL80211_IFTYPE_MONITOR: | |
3033 | rfilt |= AR5K_RX_FILTER_CONTROL | | |
3034 | AR5K_RX_FILTER_BEACON | | |
3035 | AR5K_RX_FILTER_PROBEREQ | | |
3036 | AR5K_RX_FILTER_PROM; | |
3037 | break; | |
3038 | case NL80211_IFTYPE_AP: | |
3039 | case NL80211_IFTYPE_ADHOC: | |
3040 | rfilt |= AR5K_RX_FILTER_PROBEREQ | | |
3041 | AR5K_RX_FILTER_BEACON; | |
3042 | break; | |
3043 | case NL80211_IFTYPE_STATION: | |
3044 | if (sc->assoc) | |
3045 | rfilt |= AR5K_RX_FILTER_BEACON; | |
3046 | default: | |
3047 | break; | |
3048 | } | |
fa1c114f JS |
3049 | |
3050 | /* Set filters */ | |
0bbac08f | 3051 | ath5k_hw_set_rx_filter(ah, rfilt); |
fa1c114f JS |
3052 | |
3053 | /* Set multicast bits */ | |
3054 | ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]); | |
3055 | /* Set the cached hw filter flags, this will alter actually | |
3056 | * be set in HW */ | |
3057 | sc->filter_flags = rfilt; | |
56d1de0a BC |
3058 | |
3059 | mutex_unlock(&sc->lock); | |
fa1c114f JS |
3060 | } |
3061 | ||
3062 | static int | |
3063 | ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
dc822b5d JB |
3064 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
3065 | struct ieee80211_key_conf *key) | |
fa1c114f JS |
3066 | { |
3067 | struct ath5k_softc *sc = hw->priv; | |
dc1e001b LR |
3068 | struct ath5k_hw *ah = sc->ah; |
3069 | struct ath_common *common = ath5k_hw_common(ah); | |
fa1c114f JS |
3070 | int ret = 0; |
3071 | ||
9ad9a26e BC |
3072 | if (modparam_nohwcrypt) |
3073 | return -EOPNOTSUPP; | |
3074 | ||
65b5a698 BC |
3075 | if (sc->opmode == NL80211_IFTYPE_AP) |
3076 | return -EOPNOTSUPP; | |
3077 | ||
0bbac08f | 3078 | switch (key->alg) { |
fa1c114f | 3079 | case ALG_WEP: |
fa1c114f | 3080 | case ALG_TKIP: |
3f64b435 | 3081 | break; |
fa1c114f | 3082 | case ALG_CCMP: |
1c818740 BC |
3083 | if (sc->ah->ah_aes_support) |
3084 | break; | |
3085 | ||
fa1c114f JS |
3086 | return -EOPNOTSUPP; |
3087 | default: | |
3088 | WARN_ON(1); | |
3089 | return -EINVAL; | |
3090 | } | |
3091 | ||
3092 | mutex_lock(&sc->lock); | |
3093 | ||
3094 | switch (cmd) { | |
3095 | case SET_KEY: | |
dc822b5d JB |
3096 | ret = ath5k_hw_set_key(sc->ah, key->keyidx, key, |
3097 | sta ? sta->addr : NULL); | |
fa1c114f JS |
3098 | if (ret) { |
3099 | ATH5K_ERR(sc, "can't set the key\n"); | |
3100 | goto unlock; | |
3101 | } | |
dc1e001b | 3102 | __set_bit(key->keyidx, common->keymap); |
fa1c114f | 3103 | key->hw_key_idx = key->keyidx; |
3f64b435 BC |
3104 | key->flags |= (IEEE80211_KEY_FLAG_GENERATE_IV | |
3105 | IEEE80211_KEY_FLAG_GENERATE_MMIC); | |
fa1c114f JS |
3106 | break; |
3107 | case DISABLE_KEY: | |
3108 | ath5k_hw_reset_key(sc->ah, key->keyidx); | |
dc1e001b | 3109 | __clear_bit(key->keyidx, common->keymap); |
fa1c114f JS |
3110 | break; |
3111 | default: | |
3112 | ret = -EINVAL; | |
3113 | goto unlock; | |
3114 | } | |
3115 | ||
3116 | unlock: | |
274c7c36 | 3117 | mmiowb(); |
fa1c114f JS |
3118 | mutex_unlock(&sc->lock); |
3119 | return ret; | |
3120 | } | |
3121 | ||
3122 | static int | |
3123 | ath5k_get_stats(struct ieee80211_hw *hw, | |
3124 | struct ieee80211_low_level_stats *stats) | |
3125 | { | |
3126 | struct ath5k_softc *sc = hw->priv; | |
194828a2 NK |
3127 | struct ath5k_hw *ah = sc->ah; |
3128 | ||
3129 | /* Force update */ | |
3130 | ath5k_hw_update_mib_counters(ah, &sc->ll_stats); | |
fa1c114f JS |
3131 | |
3132 | memcpy(stats, &sc->ll_stats, sizeof(sc->ll_stats)); | |
3133 | ||
3134 | return 0; | |
3135 | } | |
3136 | ||
fa1c114f JS |
3137 | static u64 |
3138 | ath5k_get_tsf(struct ieee80211_hw *hw) | |
3139 | { | |
3140 | struct ath5k_softc *sc = hw->priv; | |
3141 | ||
3142 | return ath5k_hw_get_tsf64(sc->ah); | |
3143 | } | |
3144 | ||
3b5d665b AF |
3145 | static void |
3146 | ath5k_set_tsf(struct ieee80211_hw *hw, u64 tsf) | |
3147 | { | |
3148 | struct ath5k_softc *sc = hw->priv; | |
3149 | ||
3150 | ath5k_hw_set_tsf64(sc->ah, tsf); | |
3151 | } | |
3152 | ||
fa1c114f JS |
3153 | static void |
3154 | ath5k_reset_tsf(struct ieee80211_hw *hw) | |
3155 | { | |
3156 | struct ath5k_softc *sc = hw->priv; | |
3157 | ||
9804b98d BR |
3158 | /* |
3159 | * in IBSS mode we need to update the beacon timers too. | |
3160 | * this will also reset the TSF if we call it with 0 | |
3161 | */ | |
05c914fe | 3162 | if (sc->opmode == NL80211_IFTYPE_ADHOC) |
9804b98d BR |
3163 | ath5k_beacon_update_timers(sc, 0); |
3164 | else | |
3165 | ath5k_hw_reset_tsf(sc->ah); | |
fa1c114f JS |
3166 | } |
3167 | ||
1071db86 BC |
3168 | /* |
3169 | * Updates the beacon that is sent by ath5k_beacon_send. For adhoc, | |
3170 | * this is called only once at config_bss time, for AP we do it every | |
3171 | * SWBA interrupt so that the TIM will reflect buffered frames. | |
3172 | * | |
3173 | * Called with the beacon lock. | |
3174 | */ | |
fa1c114f | 3175 | static int |
1071db86 | 3176 | ath5k_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
fa1c114f | 3177 | { |
fa1c114f | 3178 | int ret; |
1071db86 | 3179 | struct ath5k_softc *sc = hw->priv; |
72828b1b BC |
3180 | struct sk_buff *skb; |
3181 | ||
3182 | if (WARN_ON(!vif)) { | |
3183 | ret = -EINVAL; | |
3184 | goto out; | |
3185 | } | |
3186 | ||
3187 | skb = ieee80211_beacon_get(hw, vif); | |
1071db86 BC |
3188 | |
3189 | if (!skb) { | |
3190 | ret = -ENOMEM; | |
3191 | goto out; | |
3192 | } | |
fa1c114f JS |
3193 | |
3194 | ath5k_debug_dump_skb(sc, skb, "BC ", 1); | |
3195 | ||
fa1c114f JS |
3196 | ath5k_txbuf_free(sc, sc->bbuf); |
3197 | sc->bbuf->skb = skb; | |
e039fa4a | 3198 | ret = ath5k_beacon_setup(sc, sc->bbuf); |
fa1c114f JS |
3199 | if (ret) |
3200 | sc->bbuf->skb = NULL; | |
1071db86 BC |
3201 | out: |
3202 | return ret; | |
3203 | } | |
3204 | ||
02969b38 MX |
3205 | static void |
3206 | set_beacon_filter(struct ieee80211_hw *hw, bool enable) | |
3207 | { | |
3208 | struct ath5k_softc *sc = hw->priv; | |
3209 | struct ath5k_hw *ah = sc->ah; | |
3210 | u32 rfilt; | |
3211 | rfilt = ath5k_hw_get_rx_filter(ah); | |
3212 | if (enable) | |
3213 | rfilt |= AR5K_RX_FILTER_BEACON; | |
3214 | else | |
3215 | rfilt &= ~AR5K_RX_FILTER_BEACON; | |
3216 | ath5k_hw_set_rx_filter(ah, rfilt); | |
3217 | sc->filter_flags = rfilt; | |
3218 | } | |
fa1c114f | 3219 | |
02969b38 MX |
3220 | static void ath5k_bss_info_changed(struct ieee80211_hw *hw, |
3221 | struct ieee80211_vif *vif, | |
3222 | struct ieee80211_bss_conf *bss_conf, | |
3223 | u32 changes) | |
3224 | { | |
3225 | struct ath5k_softc *sc = hw->priv; | |
2d0ddec5 | 3226 | struct ath5k_hw *ah = sc->ah; |
954fecea | 3227 | struct ath_common *common = ath5k_hw_common(ah); |
21800491 | 3228 | unsigned long flags; |
2d0ddec5 JB |
3229 | |
3230 | mutex_lock(&sc->lock); | |
3231 | if (WARN_ON(sc->vif != vif)) | |
3232 | goto unlock; | |
3233 | ||
3234 | if (changes & BSS_CHANGED_BSSID) { | |
3235 | /* Cache for later use during resets */ | |
954fecea | 3236 | memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); |
8ce54c5a | 3237 | common->curaid = 0; |
be5d6b75 | 3238 | ath5k_hw_set_associd(ah); |
2d0ddec5 JB |
3239 | mmiowb(); |
3240 | } | |
57c4d7b4 JB |
3241 | |
3242 | if (changes & BSS_CHANGED_BEACON_INT) | |
3243 | sc->bintval = bss_conf->beacon_int; | |
3244 | ||
02969b38 | 3245 | if (changes & BSS_CHANGED_ASSOC) { |
02969b38 MX |
3246 | sc->assoc = bss_conf->assoc; |
3247 | if (sc->opmode == NL80211_IFTYPE_STATION) | |
3248 | set_beacon_filter(hw, sc->assoc); | |
f0f3d388 BC |
3249 | ath5k_hw_set_ledstate(sc->ah, sc->assoc ? |
3250 | AR5K_LED_ASSOC : AR5K_LED_INIT); | |
8ce54c5a LR |
3251 | if (bss_conf->assoc) { |
3252 | ATH5K_DBG(sc, ATH5K_DEBUG_ANY, | |
3253 | "Bss Info ASSOC %d, bssid: %pM\n", | |
3254 | bss_conf->aid, common->curbssid); | |
3255 | common->curaid = bss_conf->aid; | |
3256 | ath5k_hw_set_associd(ah); | |
3257 | /* Once ANI is available you would start it here */ | |
3258 | } | |
02969b38 | 3259 | } |
2d0ddec5 | 3260 | |
21800491 BC |
3261 | if (changes & BSS_CHANGED_BEACON) { |
3262 | spin_lock_irqsave(&sc->block, flags); | |
3263 | ath5k_beacon_update(hw, vif); | |
3264 | spin_unlock_irqrestore(&sc->block, flags); | |
2d0ddec5 JB |
3265 | } |
3266 | ||
21800491 BC |
3267 | if (changes & BSS_CHANGED_BEACON_ENABLED) |
3268 | sc->enable_beacon = bss_conf->enable_beacon; | |
3269 | ||
3270 | if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED | | |
3271 | BSS_CHANGED_BEACON_INT)) | |
3272 | ath5k_beacon_config(sc); | |
3273 | ||
2d0ddec5 JB |
3274 | unlock: |
3275 | mutex_unlock(&sc->lock); | |
02969b38 | 3276 | } |
f0f3d388 BC |
3277 | |
3278 | static void ath5k_sw_scan_start(struct ieee80211_hw *hw) | |
3279 | { | |
3280 | struct ath5k_softc *sc = hw->priv; | |
3281 | if (!sc->assoc) | |
3282 | ath5k_hw_set_ledstate(sc->ah, AR5K_LED_SCAN); | |
3283 | } | |
3284 | ||
3285 | static void ath5k_sw_scan_complete(struct ieee80211_hw *hw) | |
3286 | { | |
3287 | struct ath5k_softc *sc = hw->priv; | |
3288 | ath5k_hw_set_ledstate(sc->ah, sc->assoc ? | |
3289 | AR5K_LED_ASSOC : AR5K_LED_INIT); | |
3290 | } | |
6e08d228 LT |
3291 | |
3292 | /** | |
3293 | * ath5k_set_coverage_class - Set IEEE 802.11 coverage class | |
3294 | * | |
3295 | * @hw: struct ieee80211_hw pointer | |
3296 | * @coverage_class: IEEE 802.11 coverage class number | |
3297 | * | |
3298 | * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given | |
3299 | * coverage class. The values are persistent, they are restored after device | |
3300 | * reset. | |
3301 | */ | |
3302 | static void ath5k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class) | |
3303 | { | |
3304 | struct ath5k_softc *sc = hw->priv; | |
3305 | ||
3306 | mutex_lock(&sc->lock); | |
3307 | ath5k_hw_set_coverage_class(sc->ah, coverage_class); | |
3308 | mutex_unlock(&sc->lock); | |
3309 | } |